* [PATCH 0/5] Refactor to expand subslice mask
@ 2019-05-03 21:30 Stuart Summers
2019-05-03 21:30 ` [PATCH 1/5] drm/i915: Use local variable for SSEU info in GETPARAM ioctl Stuart Summers
` (8 more replies)
0 siblings, 9 replies; 25+ messages in thread
From: Stuart Summers @ 2019-05-03 21:30 UTC (permalink / raw)
To: intel-gfx
This patch series contains a few code clean-up patches, followed
by a patch which changes the storage of the subslice mask to better
match the userspace access through the I915_QUERY_TOPOLOGY_INFO
ioctl. The index into the subslice_mask array is then calculated:
slice * subslice stride + subslice index / 8
v2: fix i915_pm_sseu test failure
v3: no changes to patches in the series, just resending to pick up
in CI correctly
v4: rebase
v5: fix header test
v6: address review comments from Jari
address minor checkpatch warning in existing code
use eu_stride for EU div-by-8
v7: another rebase
v8: address review comments from Tvrtko and Daniele
Stuart Summers (5):
drm/i915: Use local variable for SSEU info in GETPARAM ioctl
drm/i915: Add macro for SSEU stride calculation
drm/i915: Move calculation of subslices per slice to new function
drm/i915: Refactor sseu helper functions
drm/i915: Expand subslice mask
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 24 +-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 30 +--
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/intel_sseu.c | 58 +++++
drivers/gpu/drm/i915/gt/intel_sseu.h | 36 ++-
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_debugfs.c | 46 ++--
drivers/gpu/drm/i915/i915_drv.c | 15 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 15 +-
drivers/gpu/drm/i915/intel_device_info.c | 246 ++++++++++++-------
drivers/gpu/drm/i915/intel_device_info.h | 47 ----
12 files changed, 327 insertions(+), 200 deletions(-)
--
2.21.0.5.gaeb582a983
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* [PATCH 1/5] drm/i915: Use local variable for SSEU info in GETPARAM ioctl
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
@ 2019-05-03 21:30 ` Stuart Summers
2019-05-03 21:30 ` [PATCH 2/5] drm/i915: Add macro for SSEU stride calculation Stuart Summers
` (7 subsequent siblings)
8 siblings, 0 replies; 25+ messages in thread
From: Stuart Summers @ 2019-05-03 21:30 UTC (permalink / raw)
To: intel-gfx
In the GETPARAM ioctl handler, use a local variable to consolidate
usage of SSEU runtime info.
v2: add const to sseu_dev_info variable
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/i915_drv.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5ed864752c7b..dcc872f9c676 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -328,6 +328,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct pci_dev *pdev = dev_priv->drm.pdev;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
int value;
@@ -381,12 +382,12 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
value = i915_cmd_parser_get_version(dev_priv);
break;
case I915_PARAM_SUBSLICE_TOTAL:
- value = sseu_subslice_total(&RUNTIME_INFO(dev_priv)->sseu);
+ value = sseu_subslice_total(sseu);
if (!value)
return -ENODEV;
break;
case I915_PARAM_EU_TOTAL:
- value = RUNTIME_INFO(dev_priv)->sseu.eu_total;
+ value = sseu->eu_total;
if (!value)
return -ENODEV;
break;
@@ -403,7 +404,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
value = HAS_POOLED_EU(dev_priv);
break;
case I915_PARAM_MIN_EU_IN_POOL:
- value = RUNTIME_INFO(dev_priv)->sseu.min_eu_in_pool;
+ value = sseu->min_eu_in_pool;
break;
case I915_PARAM_HUC_STATUS:
value = intel_huc_check_status(&dev_priv->huc);
@@ -453,12 +454,12 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
value = intel_engines_has_context_isolation(dev_priv);
break;
case I915_PARAM_SLICE_MASK:
- value = RUNTIME_INFO(dev_priv)->sseu.slice_mask;
+ value = sseu->slice_mask;
if (!value)
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = RUNTIME_INFO(dev_priv)->sseu.subslice_mask[0];
+ value = sseu->subslice_mask[0];
if (!value)
return -ENODEV;
break;
--
2.21.0.5.gaeb582a983
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https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 2/5] drm/i915: Add macro for SSEU stride calculation
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
2019-05-03 21:30 ` [PATCH 1/5] drm/i915: Use local variable for SSEU info in GETPARAM ioctl Stuart Summers
@ 2019-05-03 21:30 ` Stuart Summers
2019-05-03 21:30 ` [PATCH 3/5] drm/i915: Move calculation of subslices per slice to new function Stuart Summers
` (6 subsequent siblings)
8 siblings, 0 replies; 25+ messages in thread
From: Stuart Summers @ 2019-05-03 21:30 UTC (permalink / raw)
To: intel-gfx
Subslice stride and EU stride are calculated multiple times in
i915_query. Move this calculation to a macro to reduce code duplication.
v2: update headers in intel_sseu.h
v3: use GEN_SSEU_STRIDE for stride calculations in intel_sseu.h
apply s/bits/max_entries/ to GEN_SSEU_STRIDE parameter
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_sseu.h | 2 ++
drivers/gpu/drm/i915/i915_query.c | 17 ++++++++---------
drivers/gpu/drm/i915/intel_device_info.h | 9 +++------
3 files changed, 13 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 73bc824094e8..d20b7f96907d 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -8,11 +8,13 @@
#define __INTEL_SSEU_H__
#include <linux/types.h>
+#include <linux/kernel.h>
struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
+#define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
struct sseu_dev_info {
u8 slice_mask;
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 782183b78f49..7c1708c22811 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,6 +37,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
+ u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -48,12 +50,10 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices *
- DIV_ROUND_UP(sseu->max_subslices, BITS_PER_BYTE);
- eu_length = sseu->max_slices * sseu->max_subslices *
- DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE);
-
- total_length = sizeof(topo) + slice_length + subslice_length + eu_length;
+ subslice_length = sseu->max_slices * subslice_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ total_length = sizeof(topo) + slice_length + subslice_length +
+ eu_length;
ret = copy_query_item(&topo, sizeof(topo), total_length,
query_item);
@@ -69,10 +69,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = DIV_ROUND_UP(sseu->max_subslices, BITS_PER_BYTE);
+ topo.subslice_stride = subslice_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride =
- DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE);
+ topo.eu_stride = eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 5a2e17d6146b..9d43f7edfd63 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -231,8 +231,7 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
int slice, int subslice)
{
- int subslice_stride = DIV_ROUND_UP(sseu->max_eus_per_subslice,
- BITS_PER_BYTE);
+ int subslice_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int slice_stride = sseu->max_subslices * subslice_stride;
return slice * slice_stride + subslice * subslice_stride;
@@ -244,8 +243,7 @@ static inline u16 sseu_get_eus(const struct sseu_dev_info *sseu,
int i, offset = sseu_eu_idx(sseu, slice, subslice);
u16 eu_mask = 0;
- for (i = 0;
- i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
eu_mask |= ((u16) sseu->eu_mask[offset + i]) <<
(i * BITS_PER_BYTE);
}
@@ -258,8 +256,7 @@ static inline void sseu_set_eus(struct sseu_dev_info *sseu,
{
int i, offset = sseu_eu_idx(sseu, slice, subslice);
- for (i = 0;
- i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
sseu->eu_mask[offset + i] =
(eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
--
2.21.0.5.gaeb582a983
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 3/5] drm/i915: Move calculation of subslices per slice to new function
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
2019-05-03 21:30 ` [PATCH 1/5] drm/i915: Use local variable for SSEU info in GETPARAM ioctl Stuart Summers
2019-05-03 21:30 ` [PATCH 2/5] drm/i915: Add macro for SSEU stride calculation Stuart Summers
@ 2019-05-03 21:30 ` Stuart Summers
2019-05-03 21:30 ` [PATCH 4/5] drm/i915: Refactor sseu helper functions Stuart Summers
` (5 subsequent siblings)
8 siblings, 0 replies; 25+ messages in thread
From: Stuart Summers @ 2019-05-03 21:30 UTC (permalink / raw)
To: intel-gfx
Add a new function to return the number of subslices per slice to
consolidate code usage.
v2: rebase on changes to move sseu struct to intel_sseu.h
v3: add intel_* prefix to sseu_subslices_per_slice
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_sseu.h | 6 ++++++
drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
drivers/gpu/drm/i915/intel_device_info.c | 4 ++--
3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index d20b7f96907d..9618dff46d83 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -63,6 +63,12 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline unsigned int
+intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
+{
+ return hweight8(sseu->subslice_mask[slice]);
+}
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu);
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 14cd83e9ea8b..dceb32a16c5c 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4187,7 +4187,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
sseu_subslice_total(sseu));
for (s = 0; s < fls(sseu->slice_mask); s++) {
seq_printf(m, " %s Slice%i subslices: %u\n", type,
- s, hweight8(sseu->subslice_mask[s]));
+ s, intel_sseu_subslices_per_slice(sseu, s));
}
seq_printf(m, " %s EU Total: %u\n", type,
sseu->eu_total);
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 6af480b95bc6..9d6b9c45bc5e 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -93,7 +93,7 @@ static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
- s, hweight8(sseu->subslice_mask[s]),
+ s, intel_sseu_subslices_per_slice(sseu, s),
sseu->subslice_mask[s]);
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
@@ -126,7 +126,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
for (s = 0; s < sseu->max_slices; s++) {
drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
- s, hweight8(sseu->subslice_mask[s]),
+ s, intel_sseu_subslices_per_slice(sseu, s),
sseu->subslice_mask[s]);
for (ss = 0; ss < sseu->max_subslices; ss++) {
--
2.21.0.5.gaeb582a983
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^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 4/5] drm/i915: Refactor sseu helper functions
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
` (2 preceding siblings ...)
2019-05-03 21:30 ` [PATCH 3/5] drm/i915: Move calculation of subslices per slice to new function Stuart Summers
@ 2019-05-03 21:30 ` Stuart Summers
2019-05-07 18:12 ` Daniele Ceraolo Spurio
2019-05-03 21:30 ` [PATCH 5/5] drm/i915: Expand subslice mask Stuart Summers
` (4 subsequent siblings)
8 siblings, 1 reply; 25+ messages in thread
From: Stuart Summers @ 2019-05-03 21:30 UTC (permalink / raw)
To: intel-gfx
Move functions to intel_sseu.h and remove inline qualifier.
Additionally, ensure these are all prefixed with intel_sseu_*
to match the convention of other functions in i915.
v2: fix spacing from checkpatch warning
v3: squash helper function changes into a single patch
break 80 character line to fix checkpatch warning
move get/set_eus helpers to intel_device_info.c
Acked-by: Jani Nikula <jani.nikula@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_sseu.c | 17 ++++
drivers/gpu/drm/i915/gt/intel_sseu.h | 10 +--
drivers/gpu/drm/i915/i915_debugfs.c | 4 +-
drivers/gpu/drm/i915/i915_drv.c | 2 +-
drivers/gpu/drm/i915/intel_device_info.c | 103 ++++++++++++++++-------
drivers/gpu/drm/i915/intel_device_info.h | 44 ----------
6 files changed, 97 insertions(+), 83 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index 7f448f3bea0b..a0756f006f5f 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -8,6 +8,23 @@
#include "intel_lrc_reg.h"
#include "intel_sseu.h"
+unsigned int
+intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
+{
+ unsigned int i, total = 0;
+
+ for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
+ total += hweight8(sseu->subslice_mask[i]);
+
+ return total;
+}
+
+unsigned int
+intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
+{
+ return hweight8(sseu->subslice_mask[slice]);
+}
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu)
{
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 9618dff46d83..b50d0401a4e2 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -63,11 +63,11 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
-static inline unsigned int
-intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
-{
- return hweight8(sseu->subslice_mask[slice]);
-}
+unsigned int
+intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
+
+unsigned int
+intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu);
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index dceb32a16c5c..fce3ccd87f76 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4160,7 +4160,7 @@ static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
}
sseu->eu_total = sseu->eu_per_subslice *
- sseu_subslice_total(sseu);
+ intel_sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
@@ -4184,7 +4184,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
seq_printf(m, " %s Slice Total: %u\n", type,
hweight8(sseu->slice_mask));
seq_printf(m, " %s Subslice Total: %u\n", type,
- sseu_subslice_total(sseu));
+ intel_sseu_subslice_total(sseu));
for (s = 0; s < fls(sseu->slice_mask); s++) {
seq_printf(m, " %s Slice%i subslices: %u\n", type,
s, intel_sseu_subslices_per_slice(sseu, s));
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index dcc872f9c676..c2ea3f0992b2 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -382,7 +382,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
value = i915_cmd_parser_get_version(dev_priv);
break;
case I915_PARAM_SUBSLICE_TOTAL:
- value = sseu_subslice_total(sseu);
+ value = intel_sseu_subslice_total(sseu);
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 9d6b9c45bc5e..689702b28e80 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -90,7 +90,7 @@ static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
- drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
+ drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
s, intel_sseu_subslices_per_slice(sseu, s),
@@ -114,6 +114,43 @@ void intel_device_info_dump_runtime(const struct intel_runtime_info *info,
info->cs_timestamp_frequency_khz);
}
+static int intel_sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
+ int subslice)
+{
+ int subslice_stride = DIV_ROUND_UP(sseu->max_eus_per_subslice,
+ BITS_PER_BYTE);
+ int slice_stride = sseu->max_subslices * subslice_stride;
+
+ return slice * slice_stride + subslice * subslice_stride;
+}
+
+static u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
+ int subslice)
+{
+ int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
+ u16 eu_mask = 0;
+
+ for (i = 0;
+ i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
+ (i * BITS_PER_BYTE);
+ }
+
+ return eu_mask;
+}
+
+static void intel_sseu_set_eus(struct sseu_dev_info *sseu, int slice,
+ int subslice, u16 eu_mask)
+{
+ int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
+
+ for (i = 0;
+ i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ sseu->eu_mask[offset + i] =
+ (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
+ }
+}
+
void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
struct drm_printer *p)
{
@@ -130,7 +167,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
sseu->subslice_mask[s]);
for (ss = 0; ss < sseu->max_subslices; ss++) {
- u16 enabled_eus = sseu_get_eus(sseu, s, ss);
+ u16 enabled_eus = intel_sseu_get_eus(sseu, s, ss);
drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
ss, hweight16(enabled_eus), enabled_eus);
@@ -180,7 +217,7 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu->subslice_mask[s] & BIT(ss))
- sseu_set_eus(sseu, s, ss, eu_en);
+ intel_sseu_set_eus(sseu, s, ss, eu_en);
}
}
}
@@ -222,32 +259,32 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
for (ss = 0; ss < sseu->max_subslices; ss++)
- sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask);
+ intel_sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask);
/* Slice1 */
- sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
+ intel_sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
eu_en = ~I915_READ(GEN8_EU_DISABLE1);
- sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
+ intel_sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
/* Slice2 */
- sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
- sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
+ intel_sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
+ intel_sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
/* Slice3 */
- sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
+ intel_sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
eu_en = ~I915_READ(GEN8_EU_DISABLE2);
- sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
+ intel_sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
/* Slice4 */
- sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
- sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
+ intel_sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
+ intel_sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
/* Slice5 */
- sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
+ intel_sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
- sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
+ intel_sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
/* Do a second pass where we mark the subslices disabled if all their
* eus are off.
*/
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu_get_eus(sseu, s, ss) == 0)
+ if (intel_sseu_get_eus(sseu, s, ss) == 0)
sseu->subslice_mask[s] &= ~BIT(ss);
}
}
@@ -260,9 +297,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
* EU in any one subslice may be fused off for die
* recovery.
*/
- sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
+ sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
DIV_ROUND_UP(sseu->eu_total,
- sseu_subslice_total(sseu)) : 0;
+ intel_sseu_subslice_total(sseu)) :
+ 0;
/* No restrictions on Power Gating */
sseu->has_slice_pg = 1;
@@ -290,7 +328,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
sseu->subslice_mask[0] |= BIT(0);
- sseu_set_eus(sseu, 0, 0, ~disabled_mask);
+ intel_sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
if (!(fuse & CHV_FGT_DISABLE_SS1)) {
@@ -301,7 +339,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
sseu->subslice_mask[0] |= BIT(1);
- sseu_set_eus(sseu, 0, 1, ~disabled_mask);
+ intel_sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -310,8 +348,9 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
* CHV expected to always have a uniform distribution of EU
* across subslices.
*/
- sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
- sseu->eu_total / sseu_subslice_total(sseu) :
+ sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
+ sseu->eu_total /
+ intel_sseu_subslice_total(sseu) :
0;
/*
* CHV supports subslice power gating on devices with more than
@@ -319,7 +358,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
* more than one EU pair per subslice.
*/
sseu->has_slice_pg = 0;
- sseu->has_subslice_pg = sseu_subslice_total(sseu) > 1;
+ sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1;
sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
}
@@ -369,7 +408,7 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
- sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
+ intel_sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
eu_per_ss = sseu->max_eus_per_subslice -
hweight8(eu_disabled_mask);
@@ -393,9 +432,10 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
* recovery. BXT is expected to be perfectly uniform in EU
* distribution.
*/
- sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
+ sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
DIV_ROUND_UP(sseu->eu_total,
- sseu_subslice_total(sseu)) : 0;
+ intel_sseu_subslice_total(sseu)) :
+ 0;
/*
* SKL+ supports slice power gating on devices with more than
* one slice, and supports EU power gating on devices with
@@ -407,7 +447,7 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->has_slice_pg =
!IS_GEN9_LP(dev_priv) && hweight8(sseu->slice_mask) > 1;
sseu->has_subslice_pg =
- IS_GEN9_LP(dev_priv) && sseu_subslice_total(sseu) > 1;
+ IS_GEN9_LP(dev_priv) && intel_sseu_subslice_total(sseu) > 1;
sseu->has_eu_pg = sseu->eu_per_subslice > 2;
if (IS_GEN9_LP(dev_priv)) {
@@ -477,7 +517,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
eu_disabled_mask =
eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
- sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
+ intel_sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
n_disabled = hweight8(eu_disabled_mask);
@@ -496,9 +536,10 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
* subslices with the exception that any one EU in any one subslice may
* be fused off for die recovery.
*/
- sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
+ sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
DIV_ROUND_UP(sseu->eu_total,
- sseu_subslice_total(sseu)) : 0;
+ intel_sseu_subslice_total(sseu)) :
+ 0;
/*
* BDW supports slice power gating on devices with more than
@@ -561,8 +602,8 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
- sseu_set_eus(sseu, s, ss,
- (1UL << sseu->eu_per_subslice) - 1);
+ intel_sseu_set_eus(sseu, s, ss,
+ (1UL << sseu->eu_per_subslice) - 1);
}
}
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 9d43f7edfd63..6412a9c72898 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -218,50 +218,6 @@ struct intel_driver_caps {
bool has_logical_contexts:1;
};
-static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
-{
- unsigned int i, total = 0;
-
- for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
- total += hweight8(sseu->subslice_mask[i]);
-
- return total;
-}
-
-static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
- int slice, int subslice)
-{
- int subslice_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
- int slice_stride = sseu->max_subslices * subslice_stride;
-
- return slice * slice_stride + subslice * subslice_stride;
-}
-
-static inline u16 sseu_get_eus(const struct sseu_dev_info *sseu,
- int slice, int subslice)
-{
- int i, offset = sseu_eu_idx(sseu, slice, subslice);
- u16 eu_mask = 0;
-
- for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
- eu_mask |= ((u16) sseu->eu_mask[offset + i]) <<
- (i * BITS_PER_BYTE);
- }
-
- return eu_mask;
-}
-
-static inline void sseu_set_eus(struct sseu_dev_info *sseu,
- int slice, int subslice, u16 eu_mask)
-{
- int i, offset = sseu_eu_idx(sseu, slice, subslice);
-
- for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
- sseu->eu_mask[offset + i] =
- (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
- }
-}
-
const char *intel_platform_name(enum intel_platform platform);
void intel_device_info_subplatform_init(struct drm_i915_private *dev_priv);
--
2.21.0.5.gaeb582a983
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
` (3 preceding siblings ...)
2019-05-03 21:30 ` [PATCH 4/5] drm/i915: Refactor sseu helper functions Stuart Summers
@ 2019-05-03 21:30 ` Stuart Summers
2019-05-07 19:00 ` Daniele Ceraolo Spurio
2019-05-03 21:56 ` ✗ Fi.CI.CHECKPATCH: warning for Refactor to expand subslice mask (rev8) Patchwork
` (3 subsequent siblings)
8 siblings, 1 reply; 25+ messages in thread
From: Stuart Summers @ 2019-05-03 21:30 UTC (permalink / raw)
To: intel-gfx
Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
v3: update headers in intel_sseu.h
v4: add const to some sseu_dev_info variables
use sseu->eu_stride for EU stride calculations
v5: address review comments from Tvrtko and Daniele
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 24 ++-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 30 ++--
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/intel_sseu.c | 43 ++++-
drivers/gpu/drm/i915/gt/intel_sseu.h | 28 +++-
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_debugfs.c | 40 ++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 155 ++++++++++---------
11 files changed, 227 insertions(+), 119 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index 5907a9613641..290bda5cc82b 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -909,12 +909,30 @@ const char *i915_cache_level_str(struct drm_i915_private *i915, int type)
}
}
+static inline u32
+intel_sseu_fls_subslice(const struct sseu_dev_info *sseu, u32 slice)
+{
+ u32 subslice;
+ int i;
+
+ for (i = sseu->ss_stride - 1; i >= 0; i--) {
+ subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+ if (subslice) {
+ subslice += i * BITS_PER_BYTE;
+ break;
+ }
+ }
+
+ return subslice;
+}
+
u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
{
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = intel_sseu_fls_subslice(sseu, slice);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -990,6 +1008,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -1007,7 +1026,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index c0ab11b12e14..582340b55144 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -535,20 +535,20 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
- (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? 1 : ((sseu___)->slice_mask)) & \
+ BIT(slice___))
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ (IS_GEN(dev_priv__, 7) ? 1 : \
+ intel_sseu_has_subslice(sseu__, slice__, subslice__))
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
+ (instdone_has_subslice(dev_priv_, sseu_, slice_, \
+ subslice_)))
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
index 721ab74a382f..10e032c9ab10 100644
--- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
@@ -51,6 +51,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -72,7 +73,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index a0756f006f5f..a8b98b0266b7 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -8,6 +8,17 @@
#include "intel_lrc_reg.h"
#include "intel_sseu.h"
+void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
unsigned int
intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
{
@@ -19,10 +30,40 @@ intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
return total;
}
+void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &sseu->subslice_mask[offset], sseu->ss_stride);
+}
+
+u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i, offset = slice * sseu->ss_stride;
+ u32 mask;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ mask |= (u32)sseu->subslice_mask[offset + i] <<
+ i * BITS_PER_BYTE;
+
+ return mask;
+}
+
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
+}
+
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ return hweight32(intel_sseu_get_subslices(sseu, slice));
}
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index b50d0401a4e2..3602ae54b937 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -9,16 +9,18 @@
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/string.h>
struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -33,6 +35,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -63,12 +68,33 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline bool
+intel_sseu_has_subslice(const struct sseu_dev_info *sseu, int slice,
+ int subslice)
+{
+ u8 mask = sseu->subslice_mask[slice * sseu->ss_stride +
+ subslice / BITS_PER_BYTE];
+
+ return mask & BIT(subslice % BITS_PER_BYTE);
+}
+
+void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice);
+
unsigned int
intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
+void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask);
+
+u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice);
+
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask);
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu);
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 43e290306551..8437f9d918ec 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -767,7 +767,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u32 ss_mask = intel_sseu_get_subslices(sseu, slice);
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index fce3ccd87f76..22ac2db98dde 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1259,6 +1259,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1274,11 +1275,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4068,7 +4069,7 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s, sseu->subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4119,18 +4120,21 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4147,25 +4151,23 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
intel_sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4212,6 +4214,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4219,14 +4222,13 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ intel_sseu_set_info(&sseu, info->sseu.max_slices,
+ info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c2ea3f0992b2..c3432b5f9d4b 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -330,7 +330,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = dev_priv->drm.pdev;
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -459,7 +459,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first slice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 4f85cbdddb0d..c760cc5b3388 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -408,6 +408,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -423,12 +424,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 689702b28e80..b72505a192a0 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -84,17 +84,46 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
#undef PRINT_FLAG
}
+#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2 + 1)
+
+static char *
+subslice_per_slice_str(char *buf, u8 size, const struct sseu_dev_info *sseu,
+ u8 slice)
+{
+ int i;
+ u8 ss_offset = slice * sseu->ss_stride;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ /* Two ASCII character hex plus null terminator */
+ GEM_BUG_ON(size < sseu->ss_stride * 2 + 1);
+
+ memset(buf, 0, size);
+
+ /*
+ * Print subslice information in reverse order to match
+ * userspace expectations.
+ */
+ for (i = 0; i < sseu->ss_stride; i++)
+ sprintf(&buf[i * 2], "%02x",
+ sseu->subslice_mask[ss_offset + sseu->ss_stride -
+ (i + 1)]);
+
+ return buf;
+}
+
static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
{
int s;
+ char buf[SS_STR_MAX_SIZE];
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%s\n",
s, intel_sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, ARRAY_SIZE(buf), sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -117,11 +146,9 @@ void intel_device_info_dump_runtime(const struct intel_runtime_info *info,
static int intel_sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
int subslice)
{
- int subslice_stride = DIV_ROUND_UP(sseu->max_eus_per_subslice,
- BITS_PER_BYTE);
- int slice_stride = sseu->max_subslices * subslice_stride;
+ int slice_stride = sseu->max_subslices * sseu->eu_stride;
- return slice * slice_stride + subslice * subslice_stride;
+ return slice * slice_stride + subslice * sseu->eu_stride;
}
static u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
@@ -130,8 +157,7 @@ static u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
u16 eu_mask = 0;
- for (i = 0;
- i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ for (i = 0; i < sseu->eu_stride; i++) {
eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
(i * BITS_PER_BYTE);
}
@@ -144,8 +170,7 @@ static void intel_sseu_set_eus(struct sseu_dev_info *sseu, int slice,
{
int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
- for (i = 0;
- i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
+ for (i = 0; i < sseu->eu_stride; i++) {
sseu->eu_mask[offset + i] =
(eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
@@ -155,6 +180,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
struct drm_printer *p)
{
int s, ss;
+ char buf[SS_STR_MAX_SIZE];
if (sseu->max_slices == 0) {
drm_printf(p, "Unavailable\n");
@@ -162,9 +188,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
s, intel_sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, ARRAY_SIZE(buf), sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = intel_sseu_get_eus(sseu, s, ss);
@@ -193,15 +219,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ intel_sseu_set_info(sseu, 1, 4, 8);
+ else
+ intel_sseu_set_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -210,15 +231,15 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
for (s = 0; s < sseu->max_slices; s++) {
if (s_en & BIT(s)) {
- int ss_idx = sseu->max_subslices * s;
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+
+ intel_sseu_set_subslices(sseu, s, ss_en_mask);
+
+ for (ss = 0; ss < sseu->max_subslices; ss++)
+ if (intel_sseu_has_subslice(sseu, s, ss))
intel_sseu_set_eus(sseu, s, ss, eu_en);
- }
}
}
sseu->eu_per_subslice = hweight8(eu_en);
@@ -238,23 +259,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ intel_sseu_set_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -279,14 +287,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
intel_sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (intel_sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ intel_sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -312,13 +328,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -327,7 +342,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
intel_sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -338,10 +353,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
intel_sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ intel_sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -374,9 +391,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -395,14 +411,14 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!intel_sseu_has_subslice(sseu, s, ss))
/* skip disabled subslice */
continue;
@@ -475,9 +491,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -504,18 +518,19 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!intel_sseu_has_subslice(sseu, s, ss))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
intel_sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -555,6 +570,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -566,22 +582,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -598,9 +610,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
intel_sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
--
2.21.0.5.gaeb582a983
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* ✗ Fi.CI.CHECKPATCH: warning for Refactor to expand subslice mask (rev8)
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
` (4 preceding siblings ...)
2019-05-03 21:30 ` [PATCH 5/5] drm/i915: Expand subslice mask Stuart Summers
@ 2019-05-03 21:56 ` Patchwork
2019-05-03 21:59 ` ✗ Fi.CI.SPARSE: " Patchwork
` (2 subsequent siblings)
8 siblings, 0 replies; 25+ messages in thread
From: Patchwork @ 2019-05-03 21:56 UTC (permalink / raw)
To: Stuart Summers; +Cc: intel-gfx
== Series Details ==
Series: Refactor to expand subslice mask (rev8)
URL : https://patchwork.freedesktop.org/series/59742/
State : warning
== Summary ==
$ dim checkpatch origin/drm-tip
bde01fefeccf drm/i915: Use local variable for SSEU info in GETPARAM ioctl
5b5850b4867c drm/i915: Add macro for SSEU stride calculation
2d091162979d drm/i915: Move calculation of subslices per slice to new function
9562a29d51ba drm/i915: Refactor sseu helper functions
8236a3377935 drm/i915: Expand subslice mask
-:113: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'dev_priv_' - possible side-effects?
#113: FILE: drivers/gpu/drm/i915/gt/intel_engine_types.h:546:
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
+ (instdone_has_subslice(dev_priv_, sseu_, slice_, \
+ subslice_)))
-:113: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'sseu_' - possible side-effects?
#113: FILE: drivers/gpu/drm/i915/gt/intel_engine_types.h:546:
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
+ (instdone_has_subslice(dev_priv_, sseu_, slice_, \
+ subslice_)))
-:113: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'slice_' - possible side-effects?
#113: FILE: drivers/gpu/drm/i915/gt/intel_engine_types.h:546:
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
+ (instdone_has_subslice(dev_priv_, sseu_, slice_, \
+ subslice_)))
-:113: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'subslice_' - possible side-effects?
#113: FILE: drivers/gpu/drm/i915/gt/intel_engine_types.h:546:
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
+ (instdone_has_subslice(dev_priv_, sseu_, slice_, \
+ subslice_)))
total: 0 errors, 0 warnings, 4 checks, 729 lines checked
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 25+ messages in thread
* ✗ Fi.CI.SPARSE: warning for Refactor to expand subslice mask (rev8)
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
` (5 preceding siblings ...)
2019-05-03 21:56 ` ✗ Fi.CI.CHECKPATCH: warning for Refactor to expand subslice mask (rev8) Patchwork
@ 2019-05-03 21:59 ` Patchwork
2019-05-03 22:44 ` ✓ Fi.CI.BAT: success " Patchwork
2019-05-04 4:28 ` ✓ Fi.CI.IGT: " Patchwork
8 siblings, 0 replies; 25+ messages in thread
From: Patchwork @ 2019-05-03 21:59 UTC (permalink / raw)
To: Stuart Summers; +Cc: intel-gfx
== Series Details ==
Series: Refactor to expand subslice mask (rev8)
URL : https://patchwork.freedesktop.org/series/59742/
State : warning
== Summary ==
$ dim sparse origin/drm-tip
Sparse version: v0.5.2
Commit: drm/i915: Use local variable for SSEU info in GETPARAM ioctl
Okay!
Commit: drm/i915: Add macro for SSEU stride calculation
Okay!
Commit: drm/i915: Move calculation of subslices per slice to new function
Okay!
Commit: drm/i915: Refactor sseu helper functions
Okay!
Commit: drm/i915: Expand subslice mask
+drivers/gpu/drm/i915/i915_drv.c:464:24: warning: expression using sizeof(void)
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 25+ messages in thread
* ✓ Fi.CI.BAT: success for Refactor to expand subslice mask (rev8)
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
` (6 preceding siblings ...)
2019-05-03 21:59 ` ✗ Fi.CI.SPARSE: " Patchwork
@ 2019-05-03 22:44 ` Patchwork
2019-05-04 4:28 ` ✓ Fi.CI.IGT: " Patchwork
8 siblings, 0 replies; 25+ messages in thread
From: Patchwork @ 2019-05-03 22:44 UTC (permalink / raw)
To: Stuart Summers; +Cc: intel-gfx
== Series Details ==
Series: Refactor to expand subslice mask (rev8)
URL : https://patchwork.freedesktop.org/series/59742/
State : success
== Summary ==
CI Bug Log - changes from CI_DRM_6043 -> Patchwork_12965
====================================================
Summary
-------
**WARNING**
Minor unknown changes coming with Patchwork_12965 need to be verified
manually.
If you think the reported changes have nothing to do with the changes
introduced in Patchwork_12965, please notify your bug team to allow them
to document this new failure mode, which will reduce false positives in CI.
External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/
Possible new issues
-------------------
Here are the unknown changes that may have been introduced in Patchwork_12965:
### IGT changes ###
#### Warnings ####
* igt@i915_selftest@live_hangcheck:
- fi-apl-guc: [INCOMPLETE][1] ([fdo#103927] / [fdo#110581]) -> [DMESG-FAIL][2]
[1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/fi-apl-guc/igt@i915_selftest@live_hangcheck.html
[2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/fi-apl-guc/igt@i915_selftest@live_hangcheck.html
#### Suppressed ####
The following results come from untrusted machines, tests, or statuses.
They do not affect the overall result.
* igt@kms_chamelium@dp-crc-fast:
- {fi-cml-u2}: [PASS][3] -> [FAIL][4]
[3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/fi-cml-u2/igt@kms_chamelium@dp-crc-fast.html
[4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/fi-cml-u2/igt@kms_chamelium@dp-crc-fast.html
Known issues
------------
Here are the changes found in Patchwork_12965 that come from known issues:
### IGT changes ###
#### Issues hit ####
* igt@i915_selftest@live_hangcheck:
- fi-skl-iommu: [PASS][5] -> [INCOMPLETE][6] ([fdo#108602] / [fdo#108744] / [fdo#110581])
[5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/fi-skl-iommu/igt@i915_selftest@live_hangcheck.html
[6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/fi-skl-iommu/igt@i915_selftest@live_hangcheck.html
* igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a:
- fi-apl-guc: [PASS][7] -> [DMESG-WARN][8] ([fdo#110512])
[7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/fi-apl-guc/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a.html
[8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/fi-apl-guc/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-a.html
#### Possible fixes ####
* igt@gem_exec_suspend@basic-s3:
- fi-apl-guc: [DMESG-WARN][9] ([fdo#110512]) -> [PASS][10]
[9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/fi-apl-guc/igt@gem_exec_suspend@basic-s3.html
[10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/fi-apl-guc/igt@gem_exec_suspend@basic-s3.html
* igt@i915_selftest@live_contexts:
- fi-skl-gvtdvm: [DMESG-FAIL][11] ([fdo#110235]) -> [PASS][12]
[11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/fi-skl-gvtdvm/igt@i915_selftest@live_contexts.html
[12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/fi-skl-gvtdvm/igt@i915_selftest@live_contexts.html
{name}: This element is suppressed. This means it is ignored when computing
the status of the difference (SUCCESS, WARNING, or FAILURE).
[fdo#103927]: https://bugs.freedesktop.org/show_bug.cgi?id=103927
[fdo#108602]: https://bugs.freedesktop.org/show_bug.cgi?id=108602
[fdo#108744]: https://bugs.freedesktop.org/show_bug.cgi?id=108744
[fdo#110235]: https://bugs.freedesktop.org/show_bug.cgi?id=110235
[fdo#110512]: https://bugs.freedesktop.org/show_bug.cgi?id=110512
[fdo#110581]: https://bugs.freedesktop.org/show_bug.cgi?id=110581
Participating hosts (53 -> 43)
------------------------------
Missing (10): fi-kbl-soraka fi-ilk-m540 fi-hsw-4200u fi-byt-j1900 fi-byt-squawks fi-bsw-cyan fi-gdg-551 fi-icl-y fi-byt-clapper fi-bdw-samus
Build changes
-------------
* Linux: CI_DRM_6043 -> Patchwork_12965
CI_DRM_6043: b33a03a0d9c2f7376b78c356d4e0e9e55f495f69 @ git://anongit.freedesktop.org/gfx-ci/linux
IGT_4972: f052e49a43cc9704ea5f240df15dd9d3dfed68ab @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
Patchwork_12965: 8236a337793574e5ba805f69c4ac50598d6c7034 @ git://anongit.freedesktop.org/gfx-ci/linux
== Linux commits ==
8236a3377935 drm/i915: Expand subslice mask
9562a29d51ba drm/i915: Refactor sseu helper functions
2d091162979d drm/i915: Move calculation of subslices per slice to new function
5b5850b4867c drm/i915: Add macro for SSEU stride calculation
bde01fefeccf drm/i915: Use local variable for SSEU info in GETPARAM ioctl
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 25+ messages in thread
* ✓ Fi.CI.IGT: success for Refactor to expand subslice mask (rev8)
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
` (7 preceding siblings ...)
2019-05-03 22:44 ` ✓ Fi.CI.BAT: success " Patchwork
@ 2019-05-04 4:28 ` Patchwork
8 siblings, 0 replies; 25+ messages in thread
From: Patchwork @ 2019-05-04 4:28 UTC (permalink / raw)
To: Stuart Summers; +Cc: intel-gfx
== Series Details ==
Series: Refactor to expand subslice mask (rev8)
URL : https://patchwork.freedesktop.org/series/59742/
State : success
== Summary ==
CI Bug Log - changes from CI_DRM_6043_full -> Patchwork_12965_full
====================================================
Summary
-------
**SUCCESS**
No regressions found.
Known issues
------------
Here are the changes found in Patchwork_12965_full that come from known issues:
### IGT changes ###
#### Issues hit ####
* igt@gem_ctx_isolation@bcs0-s3:
- shard-kbl: [PASS][1] -> [DMESG-WARN][2] ([fdo#108566]) +2 similar issues
[1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-kbl6/igt@gem_ctx_isolation@bcs0-s3.html
[2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-kbl1/igt@gem_ctx_isolation@bcs0-s3.html
* igt@gem_softpin@noreloc-s3:
- shard-skl: [PASS][3] -> [INCOMPLETE][4] ([fdo#104108] / [fdo#107773] / [fdo#110581])
[3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl9/igt@gem_softpin@noreloc-s3.html
[4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl5/igt@gem_softpin@noreloc-s3.html
* igt@i915_pm_rpm@pm-caching:
- shard-skl: [PASS][5] -> [INCOMPLETE][6] ([fdo#107807] / [fdo#110581])
[5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl9/igt@i915_pm_rpm@pm-caching.html
[6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl6/igt@i915_pm_rpm@pm-caching.html
* igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic:
- shard-glk: [PASS][7] -> [FAIL][8] ([fdo#104873])
[7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-glk4/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic.html
[8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-glk4/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-atomic.html
* igt@kms_draw_crc@draw-method-xrgb8888-render-xtiled:
- shard-skl: [PASS][9] -> [FAIL][10] ([fdo#103184] / [fdo#103232])
[9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl5/igt@kms_draw_crc@draw-method-xrgb8888-render-xtiled.html
[10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl9/igt@kms_draw_crc@draw-method-xrgb8888-render-xtiled.html
* igt@kms_flip@2x-flip-vs-suspend-interruptible:
- shard-glk: [PASS][11] -> [INCOMPLETE][12] ([fdo#103359] / [fdo#110581] / [k.org#198133])
[11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-glk3/igt@kms_flip@2x-flip-vs-suspend-interruptible.html
[12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-glk7/igt@kms_flip@2x-flip-vs-suspend-interruptible.html
* igt@kms_flip@2x-plain-flip-fb-recreate:
- shard-glk: [PASS][13] -> [FAIL][14] ([fdo#100368])
[13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-glk9/igt@kms_flip@2x-plain-flip-fb-recreate.html
[14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-glk9/igt@kms_flip@2x-plain-flip-fb-recreate.html
* igt@kms_flip@flip-vs-expired-vblank:
- shard-skl: [PASS][15] -> [FAIL][16] ([fdo#105363])
[15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl8/igt@kms_flip@flip-vs-expired-vblank.html
[16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl2/igt@kms_flip@flip-vs-expired-vblank.html
* igt@kms_frontbuffer_tracking@fbc-rgb101010-draw-mmap-cpu:
- shard-skl: [PASS][17] -> [FAIL][18] ([fdo#103167] / [fdo#110379])
[17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl5/igt@kms_frontbuffer_tracking@fbc-rgb101010-draw-mmap-cpu.html
[18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl9/igt@kms_frontbuffer_tracking@fbc-rgb101010-draw-mmap-cpu.html
* igt@kms_frontbuffer_tracking@fbc-suspend:
- shard-skl: [PASS][19] -> [INCOMPLETE][20] ([fdo#104108] / [fdo#110581])
[19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl6/igt@kms_frontbuffer_tracking@fbc-suspend.html
[20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl2/igt@kms_frontbuffer_tracking@fbc-suspend.html
* igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render:
- shard-iclb: [PASS][21] -> [FAIL][22] ([fdo#103167]) +1 similar issue
[21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb5/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html
[22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb8/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-cur-indfb-draw-render.html
* igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-pri-indfb-draw-mmap-gtt:
- shard-skl: [PASS][23] -> [FAIL][24] ([fdo#103167])
[23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl5/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-pri-indfb-draw-mmap-gtt.html
[24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl9/igt@kms_frontbuffer_tracking@fbcpsr-1p-primscrn-pri-indfb-draw-mmap-gtt.html
* igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b:
- shard-apl: [PASS][25] -> [DMESG-WARN][26] ([fdo#108566]) +5 similar issues
[25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-apl6/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b.html
[26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-apl1/igt@kms_pipe_crc_basic@suspend-read-crc-pipe-b.html
* igt@kms_plane_lowres@pipe-a-tiling-x:
- shard-iclb: [PASS][27] -> [FAIL][28] ([fdo#103166]) +1 similar issue
[27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb3/igt@kms_plane_lowres@pipe-a-tiling-x.html
[28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb4/igt@kms_plane_lowres@pipe-a-tiling-x.html
* igt@kms_psr@no_drrs:
- shard-iclb: [PASS][29] -> [FAIL][30] ([fdo#108341])
[29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb5/igt@kms_psr@no_drrs.html
[30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb1/igt@kms_psr@no_drrs.html
* igt@kms_psr@psr2_sprite_plane_move:
- shard-iclb: [PASS][31] -> [SKIP][32] ([fdo#109441]) +2 similar issues
[31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb2/igt@kms_psr@psr2_sprite_plane_move.html
[32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb8/igt@kms_psr@psr2_sprite_plane_move.html
* igt@kms_rotation_crc@multiplane-rotation:
- shard-kbl: [PASS][33] -> [INCOMPLETE][34] ([fdo#103665] / [fdo#110581])
[33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-kbl2/igt@kms_rotation_crc@multiplane-rotation.html
[34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-kbl5/igt@kms_rotation_crc@multiplane-rotation.html
#### Possible fixes ####
* igt@gem_workarounds@suspend-resume:
- shard-apl: [DMESG-WARN][35] ([fdo#108566]) -> [PASS][36] +4 similar issues
[35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-apl3/igt@gem_workarounds@suspend-resume.html
[36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-apl8/igt@gem_workarounds@suspend-resume.html
* igt@i915_pm_rpm@i2c:
- shard-iclb: [FAIL][37] ([fdo#104097]) -> [PASS][38]
[37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb3/igt@i915_pm_rpm@i2c.html
[38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb4/igt@i915_pm_rpm@i2c.html
* igt@i915_suspend@debugfs-reader:
- shard-kbl: [DMESG-WARN][39] ([fdo#108566]) -> [PASS][40] +1 similar issue
[39]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-kbl1/igt@i915_suspend@debugfs-reader.html
[40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-kbl2/igt@i915_suspend@debugfs-reader.html
* igt@kms_flip@plain-flip-ts-check-interruptible:
- shard-skl: [FAIL][41] ([fdo#100368]) -> [PASS][42]
[41]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl9/igt@kms_flip@plain-flip-ts-check-interruptible.html
[42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl9/igt@kms_flip@plain-flip-ts-check-interruptible.html
* igt@kms_frontbuffer_tracking@fbcpsr-tilingchange:
- shard-iclb: [FAIL][43] ([fdo#103167]) -> [PASS][44] +5 similar issues
[43]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb4/igt@kms_frontbuffer_tracking@fbcpsr-tilingchange.html
[44]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb4/igt@kms_frontbuffer_tracking@fbcpsr-tilingchange.html
* igt@kms_plane_alpha_blend@pipe-a-constant-alpha-min:
- shard-skl: [FAIL][45] ([fdo#108145]) -> [PASS][46]
[45]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl7/igt@kms_plane_alpha_blend@pipe-a-constant-alpha-min.html
[46]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl10/igt@kms_plane_alpha_blend@pipe-a-constant-alpha-min.html
* igt@kms_plane_alpha_blend@pipe-c-coverage-7efc:
- shard-skl: [FAIL][47] ([fdo#108145] / [fdo#110403]) -> [PASS][48]
[47]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl2/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html
[48]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl6/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html
* igt@kms_psr@psr2_primary_mmap_gtt:
- shard-iclb: [SKIP][49] ([fdo#109441]) -> [PASS][50] +2 similar issues
[49]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-iclb4/igt@kms_psr@psr2_primary_mmap_gtt.html
[50]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-iclb2/igt@kms_psr@psr2_primary_mmap_gtt.html
* igt@kms_setmode@basic:
- shard-kbl: [FAIL][51] ([fdo#99912]) -> [PASS][52]
[51]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-kbl6/igt@kms_setmode@basic.html
[52]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-kbl1/igt@kms_setmode@basic.html
#### Warnings ####
* igt@gem_eio@reset-stress:
- shard-skl: [FAIL][53] -> [FAIL][54] ([fdo#105957])
[53]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6043/shard-skl5/igt@gem_eio@reset-stress.html
[54]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/shard-skl2/igt@gem_eio@reset-stress.html
[fdo#100368]: https://bugs.freedesktop.org/show_bug.cgi?id=100368
[fdo#103166]: https://bugs.freedesktop.org/show_bug.cgi?id=103166
[fdo#103167]: https://bugs.freedesktop.org/show_bug.cgi?id=103167
[fdo#103184]: https://bugs.freedesktop.org/show_bug.cgi?id=103184
[fdo#103232]: https://bugs.freedesktop.org/show_bug.cgi?id=103232
[fdo#103359]: https://bugs.freedesktop.org/show_bug.cgi?id=103359
[fdo#103665]: https://bugs.freedesktop.org/show_bug.cgi?id=103665
[fdo#104097]: https://bugs.freedesktop.org/show_bug.cgi?id=104097
[fdo#104108]: https://bugs.freedesktop.org/show_bug.cgi?id=104108
[fdo#104873]: https://bugs.freedesktop.org/show_bug.cgi?id=104873
[fdo#105363]: https://bugs.freedesktop.org/show_bug.cgi?id=105363
[fdo#105957]: https://bugs.freedesktop.org/show_bug.cgi?id=105957
[fdo#107773]: https://bugs.freedesktop.org/show_bug.cgi?id=107773
[fdo#107807]: https://bugs.freedesktop.org/show_bug.cgi?id=107807
[fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
[fdo#108341]: https://bugs.freedesktop.org/show_bug.cgi?id=108341
[fdo#108566]: https://bugs.freedesktop.org/show_bug.cgi?id=108566
[fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
[fdo#110379]: https://bugs.freedesktop.org/show_bug.cgi?id=110379
[fdo#110403]: https://bugs.freedesktop.org/show_bug.cgi?id=110403
[fdo#110581]: https://bugs.freedesktop.org/show_bug.cgi?id=110581
[fdo#99912]: https://bugs.freedesktop.org/show_bug.cgi?id=99912
[k.org#198133]: https://bugzilla.kernel.org/show_bug.cgi?id=198133
Participating hosts (10 -> 10)
------------------------------
No changes in participating hosts
Build changes
-------------
* Linux: CI_DRM_6043 -> Patchwork_12965
CI_DRM_6043: b33a03a0d9c2f7376b78c356d4e0e9e55f495f69 @ git://anongit.freedesktop.org/gfx-ci/linux
IGT_4972: f052e49a43cc9704ea5f240df15dd9d3dfed68ab @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
Patchwork_12965: 8236a337793574e5ba805f69c4ac50598d6c7034 @ git://anongit.freedesktop.org/gfx-ci/linux
piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_12965/
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 4/5] drm/i915: Refactor sseu helper functions
2019-05-03 21:30 ` [PATCH 4/5] drm/i915: Refactor sseu helper functions Stuart Summers
@ 2019-05-07 18:12 ` Daniele Ceraolo Spurio
2019-05-07 18:21 ` Summers, Stuart
0 siblings, 1 reply; 25+ messages in thread
From: Daniele Ceraolo Spurio @ 2019-05-07 18:12 UTC (permalink / raw)
To: Stuart Summers, intel-gfx
On 5/3/19 2:30 PM, Stuart Summers wrote:
> Move functions to intel_sseu.h and remove inline qualifier.
> Additionally, ensure these are all prefixed with intel_sseu_*
> to match the convention of other functions in i915.
>
> v2: fix spacing from checkpatch warning
> v3: squash helper function changes into a single patch
> break 80 character line to fix checkpatch warning
> move get/set_eus helpers to intel_device_info.c
>
> Acked-by: Jani Nikula <jani.nikula@intel.com>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> Signed-off-by: Stuart Summers <stuart.summers@intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_sseu.c | 17 ++++
> drivers/gpu/drm/i915/gt/intel_sseu.h | 10 +--
> drivers/gpu/drm/i915/i915_debugfs.c | 4 +-
> drivers/gpu/drm/i915/i915_drv.c | 2 +-
> drivers/gpu/drm/i915/intel_device_info.c | 103 ++++++++++++++++-------
> drivers/gpu/drm/i915/intel_device_info.h | 44 ----------
> 6 files changed, 97 insertions(+), 83 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
> index 7f448f3bea0b..a0756f006f5f 100644
> --- a/drivers/gpu/drm/i915/gt/intel_sseu.c
> +++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
> @@ -8,6 +8,23 @@
> #include "intel_lrc_reg.h"
> #include "intel_sseu.h"
>
> +unsigned int
> +intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
> +{
> + unsigned int i, total = 0;
> +
> + for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
> + total += hweight8(sseu->subslice_mask[i]);
> +
> + return total;
> +}
> +
> +unsigned int
> +intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
> +{
> + return hweight8(sseu->subslice_mask[slice]);
> +}
> +
> u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
> const struct intel_sseu *req_sseu)
> {
> diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
> index 9618dff46d83..b50d0401a4e2 100644
> --- a/drivers/gpu/drm/i915/gt/intel_sseu.h
> +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
> @@ -63,11 +63,11 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
> return value;
> }
>
> -static inline unsigned int
> -intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
> -{
> - return hweight8(sseu->subslice_mask[slice]);
> -}
> +unsigned int
> +intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
> +
> +unsigned int
> +intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
>
> u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
> const struct intel_sseu *req_sseu);
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index dceb32a16c5c..fce3ccd87f76 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -4160,7 +4160,7 @@ static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
> RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
> }
> sseu->eu_total = sseu->eu_per_subslice *
> - sseu_subslice_total(sseu);
> + intel_sseu_subslice_total(sseu);
>
> /* subtract fused off EU(s) from enabled slice(s) */
> for (s = 0; s < fls(sseu->slice_mask); s++) {
> @@ -4184,7 +4184,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
> seq_printf(m, " %s Slice Total: %u\n", type,
> hweight8(sseu->slice_mask));
> seq_printf(m, " %s Subslice Total: %u\n", type,
> - sseu_subslice_total(sseu));
> + intel_sseu_subslice_total(sseu));
> for (s = 0; s < fls(sseu->slice_mask); s++) {
> seq_printf(m, " %s Slice%i subslices: %u\n", type,
> s, intel_sseu_subslices_per_slice(sseu, s));
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index dcc872f9c676..c2ea3f0992b2 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -382,7 +382,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
> value = i915_cmd_parser_get_version(dev_priv);
> break;
> case I915_PARAM_SUBSLICE_TOTAL:
> - value = sseu_subslice_total(sseu);
> + value = intel_sseu_subslice_total(sseu);
> if (!value)
> return -ENODEV;
> break;
> diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
> index 9d6b9c45bc5e..689702b28e80 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.c
> +++ b/drivers/gpu/drm/i915/intel_device_info.c
> @@ -90,7 +90,7 @@ static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
>
> drm_printf(p, "slice total: %u, mask=%04x\n",
> hweight8(sseu->slice_mask), sseu->slice_mask);
> - drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
> + drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
> for (s = 0; s < sseu->max_slices; s++) {
> drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> s, intel_sseu_subslices_per_slice(sseu, s),
> @@ -114,6 +114,43 @@ void intel_device_info_dump_runtime(const struct intel_runtime_info *info,
> info->cs_timestamp_frequency_khz);
> }
>
> +static int intel_sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
No need for intel_ prefix for these functions if they're static (which
also helps reducing the diff).
> + int subslice)
> +{
> + int subslice_stride = DIV_ROUND_UP(sseu->max_eus_per_subslice,
> + BITS_PER_BYTE);
This was GEN_SSEU_STRIDE in the deleted code (other occurrences below as
well).
With these addressed:
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Daniele
> + int slice_stride = sseu->max_subslices * subslice_stride;
> +
> + return slice * slice_stride + subslice * subslice_stride;
> +}
> +
> +static u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
> + int subslice)
> +{
> + int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
> + u16 eu_mask = 0;
> +
> + for (i = 0;
> + i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
> + eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
> + (i * BITS_PER_BYTE);
> + }
> +
> + return eu_mask;
> +}
> +
> +static void intel_sseu_set_eus(struct sseu_dev_info *sseu, int slice,
> + int subslice, u16 eu_mask)
> +{
> + int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
> +
> + for (i = 0;
> + i < DIV_ROUND_UP(sseu->max_eus_per_subslice, BITS_PER_BYTE); i++) {
> + sseu->eu_mask[offset + i] =
> + (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
> + }
> +}
> +
> void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
> struct drm_printer *p)
> {
> @@ -130,7 +167,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
> sseu->subslice_mask[s]);
>
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> - u16 enabled_eus = sseu_get_eus(sseu, s, ss);
> + u16 enabled_eus = intel_sseu_get_eus(sseu, s, ss);
>
> drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
> ss, hweight16(enabled_eus), enabled_eus);
> @@ -180,7 +217,7 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> if (sseu->subslice_mask[s] & BIT(ss))
> - sseu_set_eus(sseu, s, ss, eu_en);
> + intel_sseu_set_eus(sseu, s, ss, eu_en);
> }
> }
> }
> @@ -222,32 +259,32 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
> /* Slice0 */
> eu_en = ~I915_READ(GEN8_EU_DISABLE0);
> for (ss = 0; ss < sseu->max_subslices; ss++)
> - sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask);
> + intel_sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask);
> /* Slice1 */
> - sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
> + intel_sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
> eu_en = ~I915_READ(GEN8_EU_DISABLE1);
> - sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
> + intel_sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
> /* Slice2 */
> - sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
> - sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
> + intel_sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
> + intel_sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
> /* Slice3 */
> - sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
> + intel_sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
> eu_en = ~I915_READ(GEN8_EU_DISABLE2);
> - sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
> + intel_sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
> /* Slice4 */
> - sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
> - sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
> + intel_sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
> + intel_sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
> /* Slice5 */
> - sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
> + intel_sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
> eu_en = ~I915_READ(GEN10_EU_DISABLE3);
> - sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
> + intel_sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
>
> /* Do a second pass where we mark the subslices disabled if all their
> * eus are off.
> */
> for (s = 0; s < sseu->max_slices; s++) {
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> - if (sseu_get_eus(sseu, s, ss) == 0)
> + if (intel_sseu_get_eus(sseu, s, ss) == 0)
> sseu->subslice_mask[s] &= ~BIT(ss);
> }
> }
> @@ -260,9 +297,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
> * EU in any one subslice may be fused off for die
> * recovery.
> */
> - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> DIV_ROUND_UP(sseu->eu_total,
> - sseu_subslice_total(sseu)) : 0;
> + intel_sseu_subslice_total(sseu)) :
> + 0;
>
> /* No restrictions on Power Gating */
> sseu->has_slice_pg = 1;
> @@ -290,7 +328,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
>
> sseu->subslice_mask[0] |= BIT(0);
> - sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> + intel_sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> }
>
> if (!(fuse & CHV_FGT_DISABLE_SS1)) {
> @@ -301,7 +339,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
>
> sseu->subslice_mask[0] |= BIT(1);
> - sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> + intel_sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> }
>
> sseu->eu_total = compute_eu_total(sseu);
> @@ -310,8 +348,9 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> * CHV expected to always have a uniform distribution of EU
> * across subslices.
> */
> - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> - sseu->eu_total / sseu_subslice_total(sseu) :
> + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> + sseu->eu_total /
> + intel_sseu_subslice_total(sseu) :
> 0;
> /*
> * CHV supports subslice power gating on devices with more than
> @@ -319,7 +358,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> * more than one EU pair per subslice.
> */
> sseu->has_slice_pg = 0;
> - sseu->has_subslice_pg = sseu_subslice_total(sseu) > 1;
> + sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1;
> sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
> }
>
> @@ -369,7 +408,7 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
>
> eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
>
> - sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
> + intel_sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
>
> eu_per_ss = sseu->max_eus_per_subslice -
> hweight8(eu_disabled_mask);
> @@ -393,9 +432,10 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
> * recovery. BXT is expected to be perfectly uniform in EU
> * distribution.
> */
> - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> DIV_ROUND_UP(sseu->eu_total,
> - sseu_subslice_total(sseu)) : 0;
> + intel_sseu_subslice_total(sseu)) :
> + 0;
> /*
> * SKL+ supports slice power gating on devices with more than
> * one slice, and supports EU power gating on devices with
> @@ -407,7 +447,7 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->has_slice_pg =
> !IS_GEN9_LP(dev_priv) && hweight8(sseu->slice_mask) > 1;
> sseu->has_subslice_pg =
> - IS_GEN9_LP(dev_priv) && sseu_subslice_total(sseu) > 1;
> + IS_GEN9_LP(dev_priv) && intel_sseu_subslice_total(sseu) > 1;
> sseu->has_eu_pg = sseu->eu_per_subslice > 2;
>
> if (IS_GEN9_LP(dev_priv)) {
> @@ -477,7 +517,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
> eu_disabled_mask =
> eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
>
> - sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
> + intel_sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
>
> n_disabled = hweight8(eu_disabled_mask);
>
> @@ -496,9 +536,10 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
> * subslices with the exception that any one EU in any one subslice may
> * be fused off for die recovery.
> */
> - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> DIV_ROUND_UP(sseu->eu_total,
> - sseu_subslice_total(sseu)) : 0;
> + intel_sseu_subslice_total(sseu)) :
> + 0;
>
> /*
> * BDW supports slice power gating on devices with more than
> @@ -561,8 +602,8 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
>
> for (s = 0; s < sseu->max_slices; s++) {
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> - sseu_set_eus(sseu, s, ss,
> - (1UL << sseu->eu_per_subslice) - 1);
> + intel_sseu_set_eus(sseu, s, ss,
> + (1UL << sseu->eu_per_subslice) - 1);
> }
> }
>
> diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
> index 9d43f7edfd63..6412a9c72898 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.h
> +++ b/drivers/gpu/drm/i915/intel_device_info.h
> @@ -218,50 +218,6 @@ struct intel_driver_caps {
> bool has_logical_contexts:1;
> };
>
> -static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
> -{
> - unsigned int i, total = 0;
> -
> - for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
> - total += hweight8(sseu->subslice_mask[i]);
> -
> - return total;
> -}
> -
> -static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
> - int slice, int subslice)
> -{
> - int subslice_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> - int slice_stride = sseu->max_subslices * subslice_stride;
> -
> - return slice * slice_stride + subslice * subslice_stride;
> -}
> -
> -static inline u16 sseu_get_eus(const struct sseu_dev_info *sseu,
> - int slice, int subslice)
> -{
> - int i, offset = sseu_eu_idx(sseu, slice, subslice);
> - u16 eu_mask = 0;
> -
> - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
> - eu_mask |= ((u16) sseu->eu_mask[offset + i]) <<
> - (i * BITS_PER_BYTE);
> - }
> -
> - return eu_mask;
> -}
> -
> -static inline void sseu_set_eus(struct sseu_dev_info *sseu,
> - int slice, int subslice, u16 eu_mask)
> -{
> - int i, offset = sseu_eu_idx(sseu, slice, subslice);
> -
> - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
> - sseu->eu_mask[offset + i] =
> - (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
> - }
> -}
> -
> const char *intel_platform_name(enum intel_platform platform);
>
> void intel_device_info_subplatform_init(struct drm_i915_private *dev_priv);
>
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 4/5] drm/i915: Refactor sseu helper functions
2019-05-07 18:12 ` Daniele Ceraolo Spurio
@ 2019-05-07 18:21 ` Summers, Stuart
0 siblings, 0 replies; 25+ messages in thread
From: Summers, Stuart @ 2019-05-07 18:21 UTC (permalink / raw)
To: Ceraolo Spurio, Daniele, intel-gfx
[-- Attachment #1.1: Type: text/plain, Size: 17859 bytes --]
On Tue, 2019-05-07 at 11:12 -0700, Daniele Ceraolo Spurio wrote:
>
> On 5/3/19 2:30 PM, Stuart Summers wrote:
> > Move functions to intel_sseu.h and remove inline qualifier.
> > Additionally, ensure these are all prefixed with intel_sseu_*
> > to match the convention of other functions in i915.
> >
> > v2: fix spacing from checkpatch warning
> > v3: squash helper function changes into a single patch
> > break 80 character line to fix checkpatch warning
> > move get/set_eus helpers to intel_device_info.c
> >
> > Acked-by: Jani Nikula <jani.nikula@intel.com>
> > Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> > Signed-off-by: Stuart Summers <stuart.summers@intel.com>
> > ---
> > drivers/gpu/drm/i915/gt/intel_sseu.c | 17 ++++
> > drivers/gpu/drm/i915/gt/intel_sseu.h | 10 +--
> > drivers/gpu/drm/i915/i915_debugfs.c | 4 +-
> > drivers/gpu/drm/i915/i915_drv.c | 2 +-
> > drivers/gpu/drm/i915/intel_device_info.c | 103 ++++++++++++++++
> > -------
> > drivers/gpu/drm/i915/intel_device_info.h | 44 ----------
> > 6 files changed, 97 insertions(+), 83 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c
> > b/drivers/gpu/drm/i915/gt/intel_sseu.c
> > index 7f448f3bea0b..a0756f006f5f 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_sseu.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
> > @@ -8,6 +8,23 @@
> > #include "intel_lrc_reg.h"ther occurrences below a
> > #include "intel_sseu.h"
> >
> > +unsigned int
> > +intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
> > +{
> > + unsigned int i, total = 0;
> > +
> > + for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
> > + total += hweight8(sseu->subslice_mask[i]);
> > +
> > + return total;
> > +}
> > +
> > +unsigned int
> > +intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu,
> > u8 slice)
> > +{
> > + return hweight8(sseu->subslice_mask[slice]);
> > +}
> > +
> > u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
> > const struct intel_sseu *req_sseu)
> > {
> > diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h
> > b/drivers/gpu/drm/i915/gt/intel_sseu.h
> > index 9618dff46d83..b50d0401a4e2 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_sseu.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
> > @@ -63,11 +63,11 @@ intel_sseu_from_device_info(const struct
> > sseu_dev_info *sseu)
> > return value;
> > }
> >
> > -static inline unsigned int
> > -intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu,
> > u8 slice)
> > -{
> > - return hweight8(sseu->subslice_mask[slice]);
> > -}
> > +unsigned int
> > +intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
> > +
> > +unsigned int
> > +intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu,
> > u8 slice);
> >
> > u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
> > const struct intel_sseu *req_sseu);
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> > b/drivers/gpu/drm/i915/i915_debugfs.c
> > index dceb32a16c5c..fce3ccd87f76 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -4160,7 +4160,7 @@ static void
> > broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
> > RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_mask[s];
> > }
> > sseu->eu_total = sseu->eu_per_subslice *
> > - sseu_subslice_total(sseu);
> > + intel_sseu_subslice_total(sseu);
> >
> > /* subtract fused off EU(s) from enabled slice(s) */
> > for (s = 0; s < fls(sseu->slice_mask); s++) {
> > @@ -4184,7 +4184,7 @@ static void i915_print_sseu_info(struct
> > seq_file *m, bool is_available_info,
> > seq_printf(m, " %s Slice Total: %u\n", type,
> > hweight8(sseu->slice_mask));
> > seq_printf(m, " %s Subslice Total: %u\n", type,
> > - sseu_subslice_total(sseu));
> > + intel_sseu_subslice_total(sseu));
> > for (s = 0; s < fls(sseu->slice_mask); s++) {
> > seq_printf(m, " %s Slice%i subslices: %u\n", type,
> > s, intel_sseu_subslices_per_slice(sseu, s));
> > diff --git a/drivers/gpu/drm/i915/i915_drv.c
> > b/drivers/gpu/drm/i915/i915_drv.c
> > index dcc872f9c676..c2ea3f0992b2 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.c
> > +++ b/drivers/gpu/drm/i915/i915_drv.c
> > @@ -382,7 +382,7 @@ static int i915_getparam_ioctl(struct
> > drm_device *dev, void *data,
> > value = i915_cmd_parser_get_version(dev_priv);
> > break;
> > case I915_PARAM_SUBSLICE_TOTAL:
> > - value = sseu_subslice_total(sseu);
> > + value = intel_sseu_subslice_total(sseu);
> > if (!value)
> > return -ENODEV;
> > break;
> > diff --git a/drivers/gpu/drm/i915/intel_device_info.c
> > b/drivers/gpu/drm/i915/intel_device_info.c
> > index 9d6b9c45bc5e..689702b28e80 100644
> > --- a/drivers/gpu/drm/i915/intel_device_info.c
> > +++ b/drivers/gpu/drm/i915/intel_device_info.c
> > @@ -90,7 +90,7 @@ static void sseu_dump(const struct sseu_dev_info
> > *sseu, struct drm_printer *p)
> >
> > drm_printf(p, "slice total: %u, mask=%04x\n",
> > hweight8(sseu->slice_mask), sseu->slice_mask);
> > - drm_printf(p, "subslice total: %u\n",
> > sseu_subslice_total(sseu));
> > + drm_printf(p, "subslice total: %u\n",
> > intel_sseu_subslice_total(sseu));
> > for (s = 0; s < sseu->max_slices; s++) {
> > drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> > s, intel_sseu_subslices_per_slice(sseu, s),
> > @@ -114,6 +114,43 @@ void intel_device_info_dump_runtime(const
> > struct intel_runtime_info *info,
> > info->cs_timestamp_frequency_khz);
> > }
> >
> > +static int intel_sseu_eu_idx(const struct sseu_dev_info *sseu, int
> > slice,
>
> No need for intel_ prefix for these functions if they're static
> (which
> also helps reducing the diff).
>
> > + int subslice)
> > +{
> > + int subslice_stride = DIV_ROUND_UP(sseu->max_eus_per_subslice,
> > + BITS_PER_BYTE);
>
> This was GEN_SSEU_STRIDE in the deleted code (other occurrences below
> as
> well).
>
> With these addressed:
Nice catch, I obviously missed this case. Will address both of these in
the next revision.
Thanks for the review!
-Stuart
>
> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
>
> Daniele
>
> > + int slice_stride = sseu->max_subslices * subslice_stride;
> > +
> > + return slice * slice_stride + subslice * subslice_stride;
> > +}
> > +
> > +static u16 intel_sseu_get_eus(const struct sseu_dev_info *sseu,
> > int slice,
> > + int subslice)
> > +{
> > + int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
> > + u16 eu_mask = 0;
> > +
> > + for (i = 0;
> > + i < DIV_ROUND_UP(sseu->max_eus_per_subslice,
> > BITS_PER_BYTE); i++) {
> > + eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
> > + (i * BITS_PER_BYTE);
> > + }
> > +
> > + return eu_mask;
> > +}
> > +
> > +static void intel_sseu_set_eus(struct sseu_dev_info *sseu, int
> > slice,
> > + int subslice, u16 eu_mask)
> > +{
> > + int i, offset = intel_sseu_eu_idx(sseu, slice, subslice);
> > +
> > + for (i = 0;
> > + i < DIV_ROUND_UP(sseu->max_eus_per_subslice,
> > BITS_PER_BYTE); i++) {
> > + sseu->eu_mask[offset + i] =
> > + (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
> > + }
> > +}
> > +
> > void intel_device_info_dump_topology(const struct sseu_dev_info
> > *sseu,
> > struct drm_printer *p)
> > {
> > @@ -130,7 +167,7 @@ void intel_device_info_dump_topology(const
> > struct sseu_dev_info *sseu,
> > sseu->subslice_mask[s]);
> >
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > - u16 enabled_eus = sseu_get_eus(sseu, s, ss);
> > + u16 enabled_eus = intel_sseu_get_eus(sseu, s,
> > ss);
> >
> > drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
> > ss, hweight16(enabled_eus),
> > enabled_eus);
> > @@ -180,7 +217,7 @@ static void gen11_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->subslice_mask[s] = (ss_en >> ss_idx) &
> > ss_en_mask;
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > if (sseu->subslice_mask[s] & BIT(ss))
> > - sseu_set_eus(sseu, s, ss,
> > eu_en);
> > + intel_sseu_set_eus(sseu, s, ss,
> > eu_en);
> > }
> > }
> > }
> > @@ -222,32 +259,32 @@ static void gen10_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* Slice0 */
> > eu_en = ~I915_READ(GEN8_EU_DISABLE0);
> > for (ss = 0; ss < sseu->max_subslices; ss++)
> > - sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) &
> > eu_mask);
> > + intel_sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) &
> > eu_mask);
> > /* Slice1 */
> > - sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
> > + intel_sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
> > eu_en = ~I915_READ(GEN8_EU_DISABLE1);
> > - sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
> > + intel_sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
> > /* Slice2 */
> > - sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
> > - sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
> > + intel_sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
> > + intel_sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
> > /* Slice3 */
> > - sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
> > + intel_sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
> > eu_en = ~I915_READ(GEN8_EU_DISABLE2);
> > - sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
> > + intel_sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
> > /* Slice4 */
> > - sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
> > - sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
> > + intel_sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
> > + intel_sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
> > /* Slice5 */
> > - sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
> > + intel_sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
> > eu_en = ~I915_READ(GEN10_EU_DISABLE3);
> > - sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
> > + intel_sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
> >
> > /* Do a second pass where we mark the subslices disabled if all
> > their
> > * eus are off.
> > */
> > for (s = 0; s < sseu->max_slices; s++) {
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > - if (sseu_get_eus(sseu, s, ss) == 0)
> > + if (intel_sseu_get_eus(sseu, s, ss) == 0)
> > sseu->subslice_mask[s] &= ~BIT(ss);
> > }
> > }
> > @@ -260,9 +297,10 @@ static void gen10_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > * EU in any one subslice may be fused off for die
> > * recovery.
> > */
> > - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> > + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> > DIV_ROUND_UP(sseu->eu_total,
> > - sseu_subslice_total(sseu))
> > : 0;
> > + intel_sseu_subslice_total(
> > sseu)) :
> > + 0;
> >
> > /* No restrictions on Power Gating */
> > sseu->has_slice_pg = 1;
> > @@ -290,7 +328,7 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
> >
> > sseu->subslice_mask[0] |= BIT(0);
> > - sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> > + intel_sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> > }
> >
> > if (!(fuse & CHV_FGT_DISABLE_SS1)) {
> > @@ -301,7 +339,7 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
> >
> > sseu->subslice_mask[0] |= BIT(1);
> > - sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> > + intel_sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> > }
> >
> > sseu->eu_total = compute_eu_total(sseu);
> > @@ -310,8 +348,9 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > * CHV expected to always have a uniform distribution of EU
> > * across subslices.
> > */
> > - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> > - sseu->eu_total /
> > sseu_subslice_total(sseu) :
> > + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> > + sseu->eu_total /
> > + intel_sseu_subslice_total(sseu)
> > :
> > 0;
> > /*
> > * CHV supports subslice power gating on devices with more than
> > @@ -319,7 +358,7 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > * more than one EU pair per subslice.
> > */
> > sseu->has_slice_pg = 0;
> > - sseu->has_subslice_pg = sseu_subslice_total(sseu) > 1;
> > + sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1;
> > sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
> > }
> >
> > @@ -369,7 +408,7 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> >
> > eu_disabled_mask = (eu_disable >> (ss * 8)) &
> > eu_mask;
> >
> > - sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
> > + intel_sseu_set_eus(sseu, s, ss,
> > ~eu_disabled_mask);
> >
> > eu_per_ss = sseu->max_eus_per_subslice -
> > hweight8(eu_disabled_mask);
> > @@ -393,9 +432,10 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > * recovery. BXT is expected to be perfectly uniform in EU
> > * distribution.
> > */
> > - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> > + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> > DIV_ROUND_UP(sseu->eu_total,
> > - sseu_subslice_total(sseu))
> > : 0;
> > + intel_sseu_subslice_total(
> > sseu)) :
> > + 0;
> > /*
> > * SKL+ supports slice power gating on devices with more than
> > * one slice, and supports EU power gating on devices with
> > @@ -407,7 +447,7 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->has_slice_pg =
> > !IS_GEN9_LP(dev_priv) && hweight8(sseu->slice_mask) >
> > 1;
> > sseu->has_subslice_pg =
> > - IS_GEN9_LP(dev_priv) && sseu_subslice_total(sseu) > 1;
> > + IS_GEN9_LP(dev_priv) && intel_sseu_subslice_total(sseu)
> > > 1;
> > sseu->has_eu_pg = sseu->eu_per_subslice > 2;
> >
> > if (IS_GEN9_LP(dev_priv)) {
> > @@ -477,7 +517,7 @@ static void broadwell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > eu_disabled_mask =
> > eu_disable[s] >> (ss * sseu-
> > >max_eus_per_subslice);
> >
> > - sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
> > + intel_sseu_set_eus(sseu, s, ss,
> > ~eu_disabled_mask);
> >
> > n_disabled = hweight8(eu_disabled_mask);
> >
> > @@ -496,9 +536,10 @@ static void broadwell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > * subslices with the exception that any one EU in any one
> > subslice may
> > * be fused off for die recovery.
> > */
> > - sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
> > + sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
> > DIV_ROUND_UP(sseu->eu_total,
> > - sseu_subslice_total(sseu))
> > : 0;
> > + intel_sseu_subslice_total(
> > sseu)) :
> > + 0;
> >
> > /*
> > * BDW supports slice power gating on devices with more than
> > @@ -561,8 +602,8 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > - sseu_set_eus(sseu, s, ss,
> > - (1UL << sseu->eu_per_subslice) -
> > 1);
> > + intel_sseu_set_eus(sseu, s, ss,
> > + (1UL << sseu-
> > >eu_per_subslice) - 1);
> > }
> > }
> >
> > diff --git a/drivers/gpu/drm/i915/intel_device_info.h
> > b/drivers/gpu/drm/i915/intel_device_info.h
> > index 9d43f7edfd63..6412a9c72898 100644
> > --- a/drivers/gpu/drm/i915/intel_device_info.h
> > +++ b/drivers/gpu/drm/i915/intel_device_info.h
> > @@ -218,50 +218,6 @@ struct intel_driver_caps {
> > bool has_logical_contexts:1;
> > };
> >
> > -static inline unsigned int sseu_subslice_total(const struct
> > sseu_dev_info *sseu)
> > -{
> > - unsigned int i, total = 0;
> > -
> > - for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
> > - total += hweight8(sseu->subslice_mask[i]);
> > -
> > - return total;
> > -}
> > -
> > -static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
> > - int slice, int subslice)
> > -{
> > - int subslice_stride = GEN_SSEU_STRIDE(sseu-
> > >max_eus_per_subslice);
> > - int slice_stride = sseu->max_subslices * subslice_stride;
> > -
> > - return slice * slice_stride + subslice * subslice_stride;
> > -}
> > -
> > -static inline u16 sseu_get_eus(const struct sseu_dev_info *sseu,
> > - int slice, int subslice)
> > -{
> > - int i, offset = sseu_eu_idx(sseu, slice, subslice);
> > - u16 eu_mask = 0;
> > -
> > - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > i++) {
> > - eu_mask |= ((u16) sseu->eu_mask[offset + i]) <<
> > - (i * BITS_PER_BYTE);
> > - }
> > -
> > - return eu_mask;
> > -}
> > -
> > -static inline void sseu_set_eus(struct sseu_dev_info *sseu,
> > - int slice, int subslice, u16 eu_mask)
> > -{
> > - int i, offset = sseu_eu_idx(sseu, slice, subslice);
> > -
> > - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > i++) {
> > - sseu->eu_mask[offset + i] =
> > - (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
> > - }
> > -}
> > -
> > const char *intel_platform_name(enum intel_platform platform);
> >
> > void intel_device_info_subplatform_init(struct drm_i915_private
> > *dev_priv);
> >
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-03 21:30 ` [PATCH 5/5] drm/i915: Expand subslice mask Stuart Summers
@ 2019-05-07 19:00 ` Daniele Ceraolo Spurio
2019-05-07 20:48 ` Summers, Stuart
0 siblings, 1 reply; 25+ messages in thread
From: Daniele Ceraolo Spurio @ 2019-05-07 19:00 UTC (permalink / raw)
To: Stuart Summers, intel-gfx
On 5/3/19 2:30 PM, Stuart Summers wrote:
> Currently, the subslice_mask runtime parameter is stored as an
> array of subslices per slice. Expand the subslice mask array to
> better match what is presented to userspace through the
> I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
> then calculated:
> slice * subslice stride + subslice index / 8
>
> v2: fix spacing in set_sseu_info args
> use set_sseu_info to initialize sseu data when building
> device status in debugfs
> rename variables in intel_engine_types.h to avoid checkpatch
> warnings
> v3: update headers in intel_sseu.h
> v4: add const to some sseu_dev_info variables
> use sseu->eu_stride for EU stride calculations
> v5: address review comments from Tvrtko and Daniele
>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
> Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
> Signed-off-by: Stuart Summers <stuart.summers@intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_engine_cs.c | 24 ++-
> drivers/gpu/drm/i915/gt/intel_engine_types.h | 30 ++--
> drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
> drivers/gpu/drm/i915/gt/intel_sseu.c | 43 ++++-
> drivers/gpu/drm/i915/gt/intel_sseu.h | 28 +++-
> drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
> drivers/gpu/drm/i915/i915_debugfs.c | 40 ++---
> drivers/gpu/drm/i915/i915_drv.c | 6 +-
> drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
> drivers/gpu/drm/i915/i915_query.c | 10 +-
> drivers/gpu/drm/i915/intel_device_info.c | 155 ++++++++++---------
> 11 files changed, 227 insertions(+), 119 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index 5907a9613641..290bda5cc82b 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -909,12 +909,30 @@ const char *i915_cache_level_str(struct drm_i915_private *i915, int type)
> }
> }
>
> +static inline u32
> +intel_sseu_fls_subslice(const struct sseu_dev_info *sseu, u32 slice)
> +{
> + u32 subslice;
> + int i;
> +
> + for (i = sseu->ss_stride - 1; i >= 0; i--) {
> + subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride +
> + i]);
> + if (subslice) {
> + subslice += i * BITS_PER_BYTE;
> + break;
> + }
> + }
> +
> + return subslice;
> +}
> +
> u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
> {
> const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 mcr_s_ss_select;
> u32 slice = fls(sseu->slice_mask);
> - u32 subslice = fls(sseu->subslice_mask[slice]);
> + u32 subslice = intel_sseu_fls_subslice(sseu, slice);
>
> if (IS_GEN(dev_priv, 10))
> mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
> @@ -990,6 +1008,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
> struct intel_instdone *instdone)
> {
> struct drm_i915_private *dev_priv = engine->i915;
> + const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> struct intel_uncore *uncore = engine->uncore;
> u32 mmio_base = engine->mmio_base;
> int slice;
> @@ -1007,7 +1026,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
>
> instdone->slice_common =
> intel_uncore_read(uncore, GEN7_SC_INSTDONE);
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> + subslice) {
> instdone->sampler[slice][subslice] =
> read_subslice_reg(dev_priv, slice, subslice,
> GEN7_SAMPLER_INSTDONE);
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> index c0ab11b12e14..582340b55144 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> @@ -535,20 +535,20 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
> return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
> }
>
> -#define instdone_slice_mask(dev_priv__) \
> - (IS_GEN(dev_priv__, 7) ? \
> - 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
> -
> -#define instdone_subslice_mask(dev_priv__) \
> - (IS_GEN(dev_priv__, 7) ? \
> - 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
> -
> -#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
> - for ((slice__) = 0, (subslice__) = 0; \
> - (slice__) < I915_MAX_SLICES; \
> - (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
> - (slice__) += ((subslice__) == 0)) \
> - for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
> - (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
> +#define instdone_has_slice(dev_priv___, sseu___, slice___) \
> + ((IS_GEN(dev_priv___, 7) ? 1 : ((sseu___)->slice_mask)) & \
> + BIT(slice___))
> +
> +#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
> + (IS_GEN(dev_priv__, 7) ? 1 : \
This will return true for all ss on gen7, while the original code
returned 1 as the subslice mask (i.e. only has ss == 0).
> + intel_sseu_has_subslice(sseu__, slice__, subslice__))
> +
> +#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
> + for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
> + (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
> + (slice_) += ((subslice_) == 0)) \
> + for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
> + (instdone_has_subslice(dev_priv_, sseu_, slice_, \
> + subslice_)))
>
> #endif /* __INTEL_ENGINE_TYPES_H__ */
> diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> index 721ab74a382f..10e032c9ab10 100644
> --- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> +++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> @@ -51,6 +51,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
> static bool subunits_stuck(struct intel_engine_cs *engine)
> {
> struct drm_i915_private *dev_priv = engine->i915;
> + const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> struct intel_instdone instdone;
> struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
> bool stuck;
> @@ -72,7 +73,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
> stuck &= instdone_unchanged(instdone.slice_common,
> &accu_instdone->slice_common);
>
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
> stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
> &accu_instdone->sampler[slice][subslice]);
> stuck &= instdone_unchanged(instdone.row[slice][subslice],
> diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
> index a0756f006f5f..a8b98b0266b7 100644
> --- a/drivers/gpu/drm/i915/gt/intel_sseu.c
> +++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
> @@ -8,6 +8,17 @@
> #include "intel_lrc_reg.h"
> #include "intel_sseu.h"
>
> +void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
> + u8 max_subslices, u8 max_eus_per_subslice)
> +{
> + sseu->max_slices = max_slices;
> + sseu->max_subslices = max_subslices;
> + sseu->max_eus_per_subslice = max_eus_per_subslice;
> +
> + sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> + sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> +}
> +
> unsigned int
> intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
> {
> @@ -19,10 +30,40 @@ intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
> return total;
> }
>
> +void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
> + u8 *to_mask)
> +{
> + int offset = slice * sseu->ss_stride;
> +
> + memcpy(&to_mask[offset], &sseu->subslice_mask[offset], sseu->ss_stride);
> +}
> +
> +u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice)
nitpick: extra space
> +{
> + int i, offset = slice * sseu->ss_stride;
> + u32 mask;
> +
GEM_BUG_ON(sseu->ss_stride > size(u32)) to catch the unlikely case we go
over and need to update the mask size?
> + for (i = 0; i < sseu->ss_stride; i++)
> + mask |= (u32)sseu->subslice_mask[offset + i] <<
> + i * BITS_PER_BYTE;
> +
> + return mask;
> +}
> +
> +void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
> + u32 ss_mask)
> +{
> + int i, offset = slice * sseu->ss_stride;
> +
> + for (i = 0; i < sseu->ss_stride; i++)
> + sseu->subslice_mask[offset + i] =
> + (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
> +}
> +
> unsigned int
> intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
> {
> - return hweight8(sseu->subslice_mask[slice]);
> + return hweight32(intel_sseu_get_subslices(sseu, slice));
> }
>
> u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
<snip>
> --- a/drivers/gpu/drm/i915/intel_device_info.c
> +++ b/drivers/gpu/drm/i915/intel_device_info.c
> @@ -84,17 +84,46 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
> #undef PRINT_FLAG
> }
>
> +#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2 + 1)
> +
> +static char *
> +subslice_per_slice_str(char *buf, u8 size, const struct sseu_dev_info *sseu,
> + u8 slice)
> +{
> + int i;
> + u8 ss_offset = slice * sseu->ss_stride;
> +
> + GEM_BUG_ON(slice >= sseu->max_slices);
> +
> + /* Two ASCII character hex plus null terminator */
> + GEM_BUG_ON(size < sseu->ss_stride * 2 + 1);
> +
> + memset(buf, 0, size);
> +
> + /*
> + * Print subslice information in reverse order to match
> + * userspace expectations.
> + */
> + for (i = 0; i < sseu->ss_stride; i++)
> + sprintf(&buf[i * 2], "%02x",
> + sseu->subslice_mask[ss_offset + sseu->ss_stride -
> + (i + 1)]);
> +
> + return buf;
> +}
> +
> static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
> {
> int s;
> + char buf[SS_STR_MAX_SIZE];
>
> drm_printf(p, "slice total: %u, mask=%04x\n",
> hweight8(sseu->slice_mask), sseu->slice_mask);
> drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
> for (s = 0; s < sseu->max_slices; s++) {
> - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> + drm_printf(p, "slice%d: %u subslices, mask=%s\n",
> s, intel_sseu_subslices_per_slice(sseu, s),
> - sseu->subslice_mask[s]);
> + subslice_per_slice_str(buf, ARRAY_SIZE(buf), sseu, s));
Now that we have intel_sseu_get_subslices() can't we just print the
return from that instead of using the buffer?
> }
> drm_printf(p, "EU total: %u\n", sseu->eu_total);
> drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
<snip>
> @@ -555,6 +570,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 fuse1;
> int s, ss;
> + u32 subslice_mask;
>
> /*
> * There isn't a register to tell us how many slices/subslices. We
> @@ -566,22 +582,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> /* fall through */
> case 1:
> sseu->slice_mask = BIT(0);
> - sseu->subslice_mask[0] = BIT(0);
> + subslice_mask = BIT(0);
> break;
> case 2:
> sseu->slice_mask = BIT(0);
> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> + subslice_mask = BIT(0) | BIT(1);
> break;
> case 3:
> sseu->slice_mask = BIT(0) | BIT(1);
> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> + subslice_mask = BIT(0) | BIT(1);
> break;
> }
>
> - sseu->max_slices = hweight8(sseu->slice_mask);
> - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> -
> fuse1 = I915_READ(HSW_PAVP_FUSE1);
> switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
> default:
> @@ -598,9 +610,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->eu_per_subslice = 6;
> break;
> }
> - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> +
> + intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
> + hweight8(subslice_mask),
> + sseu->eu_per_subslice);
I'd still prefer this to use a local variable so that we always only set
sseu->eu_per_subslice from within intel_sseu_set_info.
Daniele
>
> for (s = 0; s < sseu->max_slices; s++) {
> + intel_sseu_set_subslices(sseu, s, subslice_mask);
> +
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> intel_sseu_set_eus(sseu, s, ss,
> (1UL << sseu->eu_per_subslice) - 1);
>
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-07 19:00 ` Daniele Ceraolo Spurio
@ 2019-05-07 20:48 ` Summers, Stuart
2019-05-07 21:16 ` Daniele Ceraolo Spurio
0 siblings, 1 reply; 25+ messages in thread
From: Summers, Stuart @ 2019-05-07 20:48 UTC (permalink / raw)
To: Ceraolo Spurio, Daniele, intel-gfx
[-- Attachment #1.1: Type: text/plain, Size: 14992 bytes --]
On Tue, 2019-05-07 at 12:00 -0700, Daniele Ceraolo Spurio wrote:
>
> On 5/3/19 2:30 PM, Stuart Summers wrote:
> > Currently, the subslice_mask runtime parameter is stored as an
> > array of subslices per slice. Expand the subslice mask array to
> > better match what is presented to userspace through the
> > I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
> > then calculated:
> > slice * subslice stride + subslice index / 8
> >
> > v2: fix spacing in set_sseu_info args
> > use set_sseu_info to initialize sseu data when building
> > device status in debugfs
> > rename variables in intel_engine_types.h to avoid checkpatch
> > warnings
> > v3: update headers in intel_sseu.h
> > v4: add const to some sseu_dev_info variables
> > use sseu->eu_stride for EU stride calculations
> > v5: address review comments from Tvrtko and Daniele
> >
> > Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> > Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
> > Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
> > Signed-off-by: Stuart Summers <stuart.summers@intel.com>
> > ---
> > drivers/gpu/drm/i915/gt/intel_engine_cs.c | 24 ++-
> > drivers/gpu/drm/i915/gt/intel_engine_types.h | 30 ++--
> > drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
> > drivers/gpu/drm/i915/gt/intel_sseu.c | 43 ++++-
> > drivers/gpu/drm/i915/gt/intel_sseu.h | 28 +++-
> > drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
> > drivers/gpu/drm/i915/i915_debugfs.c | 40 ++---
> > drivers/gpu/drm/i915/i915_drv.c | 6 +-
> > drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
> > drivers/gpu/drm/i915/i915_query.c | 10 +-
> > drivers/gpu/drm/i915/intel_device_info.c | 155 ++++++++++--
> > -------
> > 11 files changed, 227 insertions(+), 119 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > index 5907a9613641..290bda5cc82b 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > @@ -909,12 +909,30 @@ const char *i915_cache_level_str(struct
> > drm_i915_private *i915, int type)
> > }
> > }
> >
> > +static inline u32
> > +intel_sseu_fls_subslice(const struct sseu_dev_info *sseu, u32
> > slice)
> > +{
> > + u32 subslice;
> > + int i;
> > +
> > + for (i = sseu->ss_stride - 1; i >= 0; i--) {
> > + subslice = fls(sseu->subslice_mask[slice * sseu-
> > >ss_stride +
> > + i]);
> > + if (subslice) {
> > + subslice += i * BITS_PER_BYTE;
> > + break;
> > + }
> > + }
> > +
> > + return subslice;
> > +}
> > +
> > u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private
> > *dev_priv)
> > {
> > const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > u32 mcr_s_ss_select;
> > u32 slice = fls(sseu->slice_mask);
> > - u32 subslice = fls(sseu->subslice_mask[slice]);
> > + u32 subslice = intel_sseu_fls_subslice(sseu, slice);
> >
> > if (IS_GEN(dev_priv, 10))
> > mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
> > @@ -990,6 +1008,7 @@ void intel_engine_get_instdone(struct
> > intel_engine_cs *engine,
> > struct intel_instdone *instdone)
> > {
> > struct drm_i915_private *dev_priv = engine->i915;
> > + const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > struct intel_uncore *uncore = engine->uncore;
> > u32 mmio_base = engine->mmio_base;
> > int slice;
> > @@ -1007,7 +1026,8 @@ void intel_engine_get_instdone(struct
> > intel_engine_cs *engine,
> >
> > instdone->slice_common =
> > intel_uncore_read(uncore, GEN7_SC_INSTDONE);
> > - for_each_instdone_slice_subslice(dev_priv, slice,
> > subslice) {
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > + subslice) {
> > instdone->sampler[slice][subslice] =
> > read_subslice_reg(dev_priv, slice,
> > subslice,
> > GEN7_SAMPLER_INSTDONE
> > );
> > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > index c0ab11b12e14..582340b55144 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > @@ -535,20 +535,20 @@ intel_engine_needs_breadcrumb_tasklet(const
> > struct intel_engine_cs *engine)
> > return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
> > }
> >
> > -#define instdone_slice_mask(dev_priv__) \
> > - (IS_GEN(dev_priv__, 7) ? \
> > - 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
> > -
> > -#define instdone_subslice_mask(dev_priv__) \
> > - (IS_GEN(dev_priv__, 7) ? \
> > - 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
> > -
> > -#define for_each_instdone_slice_subslice(dev_priv__, slice__,
> > subslice__) \
> > - for ((slice__) = 0, (subslice__) = 0; \
> > - (slice__) < I915_MAX_SLICES; \
> > - (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ?
> > (subslice__) + 1 : 0, \
> > - (slice__) += ((subslice__) == 0)) \
> > - for_each_if((BIT(slice__) &
> > instdone_slice_mask(dev_priv__)) && \
> > - (BIT(subslice__) &
> > instdone_subslice_mask(dev_priv__)))
> > +#define instdone_has_slice(dev_priv___, sseu___, slice___) \
> > + ((IS_GEN(dev_priv___, 7) ? 1 : ((sseu___)->slice_mask)) & \
> > + BIT(slice___))
> > +
> > +#define instdone_has_subslice(dev_priv__, sseu__, slice__,
> > subslice__) \
> > + (IS_GEN(dev_priv__, 7) ? 1 : \
>
> This will return true for all ss on gen7, while the original code
> returned 1 as the subslice mask (i.e. only has ss == 0).
True, I'll fix this.
>
> > + intel_sseu_has_subslice(sseu__, slice__, subslice__))
> > +
> > +#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_,
> > subslice_) \
> > + for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES;
> > \
> > + (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
> > + (slice_) += ((subslice_) == 0)) \
> > + for_each_if((instdone_has_slice(dev_priv_, sseu_,
> > slice_)) && \
> > + (irnstdone_has_subslice(dev_priv_, sseu_,
> > slice_, \
> > + subslice_)))
> >
> > #endif /* __INTEL_ENGINE_TYPES_H__ */
> > diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > index 721ab74a382f..10e032c9ab10 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > @@ -51,6 +51,7 @@ static bool instdone_unchanged(u32
> > current_instdone, u32 *old_instdone)
> > static bool subunits_stuck(struct intel_engine_cs *engine)
> > {
> > struct drm_i915_private *dev_priv = engine->i915;
> > + const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > struct intel_instdone instdone;
> > struct intel_instdone *accu_instdone = &engine-
> > >hangcheck.instdone;
> > bool stuck;
> > @@ -72,7 +73,7 @@ static bool subunits_stuck(struct intel_engine_cs
> > *engine)
> > stuck &= instdone_unchanged(instdone.slice_common,
> > &accu_instdone->slice_common);
> >
> > - for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > subslice) {
> > stuck &=
> > instdone_unchanged(instdone.sampler[slice][subslice],
> > &accu_instdone-
> > >sampler[slice][subslice]);
> > stuck &=
> > instdone_unchanged(instdone.row[slice][subslice],
> > diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c
> > b/drivers/gpu/drm/i915/gt/intel_sseu.c
> > index a0756f006f5f..a8b98b0266b7 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_sseu.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
> > @@ -8,6 +8,17 @@
> > #include "intel_lrc_reg.h"
> > #include "intel_sseu.h"
> >
> > +void intel_sseu_set_info(struct sseu_dev_info *sseu, u8
> > max_slices,
> > + u8 max_subslices, u8 max_eus_per_subslice)
> > +{
> > + sseu->max_slices = max_slices;
> > + sseu->max_subslices = max_subslices;
> > + sseu->max_eus_per_subslice = max_eus_per_subslice;
> > +
> > + sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> > + sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > +}
> > +
> > unsigned int
> > intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
> > {
> > @@ -19,10 +30,40 @@ intel_sseu_subslice_total(const struct
> > sseu_dev_info *sseu)
> > return total;
> > }
> >
> > +void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu,
> > int slice,
> > + u8 *to_mask)
> > +{
> > + int offset = slice * sseu->ss_stride;
> > +
> > + memcpy(&to_mask[offset], &sseu->subslice_mask[offset], sseu-
> > >ss_stride);
> > +}
> > +
> > +u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8
> > slice)
>
> nitpick: extra space
Ok.
>
> > +{
> > + int i, offset = slice * sseu->ss_stride;
> > + u32 mask;
> > +
>
> GEM_BUG_ON(sseu->ss_stride > size(u32)) to catch the unlikely case we
> go
> over and need to update the mask size?
Makes sense. I'll add this.
>
> > + for (i = 0; i < sseu->ss_stride; i++)
> > + mask |= (u32)sseu->subslice_mask[offset + i] <<
> > + i * BITS_PER_BYTE;
> > +
> > + return mask;
> > +}
> > +
> > +void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int
> > slice,
> > + u32 ss_mask)
> > +{
> > + int i, offset = slice * sseu->ss_stride;
> > +
> > + for (i = 0; i < sseu->ss_stride; i++)
> > + sseu->subslice_mask[offset + i] =
> > + (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
> > +}
> > +
> > unsigned int
> > intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu,
> > u8 slice)
> > {
> > - return hweight8(sseu->subslice_mask[slice]);
> > + return hweight32(intel_sseu_get_subslices(sseu, slice));
> > }
> >
> > u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
>
> <snip>
>
> > --- a/drivers/gpu/drm/i915/intel_device_info.c
> > +++ b/drivers/gpu/drm/i915/intel_device_info.c
> > @@ -84,17 +84,46 @@ void intel_device_info_dump_flags(const struct
> > intel_device_info *info,
> > #undef PRINT_FLAG
> > }
> >
> > +#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2 + 1)
> > +
> > +static char *
> > +subslice_per_slice_str(char *buf, u8 size, const struct
> > sseu_dev_info *sseu,
> > + u8 slice)
> > +{
> > + int i;
> > + u8 ss_offset = slice * sseu->ss_stride;
> > +
> > + GEM_BUG_ON(slice >= sseu->max_slices);
> > +
> > + /* Two ASCII character hex plus null terminator */
> > + GEM_BUG_ON(size < sseu->ss_stride * 2 + 1);
> > +
> > + memset(buf, 0, size);
> > +
> > + /*
> > + * Print subslice information in reverse order to match
> > + * userspace expectations.
> > + */
> > + for (i = 0; i < sseu->ss_stride; i++)
> > + sprintf(&buf[i * 2], "%02x",
> > + sseu->subslice_mask[ss_offset + sseu->ss_stride
> > -
> > + (i + 1)]);
> > +
> > + return buf;
> > +}
> > +
> > static void sseu_dump(const struct sseu_dev_info *sseu, struct
> > drm_printer *p)
> > {
> > int s;
> > + char buf[SS_STR_MAX_SIZE];
> >
> > drm_printf(p, "slice total: %u, mask=%04x\n",
> > hweight8(sseu->slice_mask), sseu->slice_mask);
> > drm_printf(p, "subslice total: %u\n",
> > intel_sseu_subslice_total(sseu));
> > for (s = 0; s < sseu->max_slices; s++) {
> > - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> > + drm_printf(p, "slice%d: %u subslices, mask=%s\n",
> > s, intel_sseu_subslices_per_slice(sseu, s),
> > - sseu->subslice_mask[s]);
> > + subslice_per_slice_str(buf, ARRAY_SIZE(buf),
> > sseu, s));
>
> Now that we have intel_sseu_get_subslices() can't we just print the
> return from that instead of using the buffer?
I personally would prefer we keep the stringify function as it gives a
little more flexibility. Do you have a strong preference to move to a
direct printk formatted string?
>
>
> > }
> > drm_printf(p, "EU total: %u\n", sseu->eu_total);
> > drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
>
> <snip>
>
> > @@ -555,6 +570,7 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > u32 fuse1;
> > int s, ss;
> > + u32 subslice_mask;
> >
> > /*
> > * There isn't a register to tell us how many slices/subslices.
> > We
> > @@ -566,22 +582,18 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* fall through */
> > case 1:
> > sseu->slice_mask = BIT(0);
> > - sseu->subslice_mask[0] = BIT(0);
> > + subslice_mask = BIT(0);
> > break;
> > case 2:
> > sseu->slice_mask = BIT(0);
> > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > + subslice_mask = BIT(0) | BIT(1);
> > break;
> > case 3:
> > sseu->slice_mask = BIT(0) | BIT(1);
> > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> > + subslice_mask = BIT(0) | BIT(1);
> > break;
> > }
> >
> > - sseu->max_slices = hweight8(sseu->slice_mask);
> > - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> > -
> > fuse1 = I915_READ(HSW_PAVP_FUSE1);
> > switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
> > default:
> > @@ -598,9 +610,14 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->eu_per_subslice = 6;
> > break;
> > }
> > - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> > +
> > + intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
> > + hweight8(subslice_mask),
> > + sseu->eu_per_subslice);
>
> I'd still prefer this to use a local variable so that we always only
> set
> sseu->eu_per_subslice from within intel_sseu_set_info.
So the reason I kept this is in intel_sseu_set_info we are really just
setting the max_eus_per_subslice, not the eu_per_subslice. Are you
saying you'd also like to move the code that sets eu_per_subslice in
each generation's handler to local variables and/or just passed
directly as an argument to intel_sseu_set_info?
I.e. should we use intel_sseu_set_info to set most or all of the
members of the intel_sseu structure? Or is it OK to keep the current
implementation of only using this to set default maximums per platform?
-Stuart
>
> Daniele
>
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > + intel_sseu_set_subslices(sseu, s, subslice_mask);
> > +
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > intel_sseu_set_eus(sseu, s, ss,
> > (1UL << sseu-
> > >eu_per_subslice) - 1);
> >
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-07 20:48 ` Summers, Stuart
@ 2019-05-07 21:16 ` Daniele Ceraolo Spurio
2019-05-07 21:19 ` Summers, Stuart
0 siblings, 1 reply; 25+ messages in thread
From: Daniele Ceraolo Spurio @ 2019-05-07 21:16 UTC (permalink / raw)
To: Summers, Stuart, intel-gfx
<snip>
>>
>>> --- a/drivers/gpu/drm/i915/intel_device_info.c
>>> +++ b/drivers/gpu/drm/i915/intel_device_info.c
>>> @@ -84,17 +84,46 @@ void intel_device_info_dump_flags(const struct
>>> intel_device_info *info,
>>> #undef PRINT_FLAG
>>> }
>>>
>>> +#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2 + 1)
>>> +
>>> +static char *
>>> +subslice_per_slice_str(char *buf, u8 size, const struct
>>> sseu_dev_info *sseu,
>>> + u8 slice)
>>> +{
>>> + int i;
>>> + u8 ss_offset = slice * sseu->ss_stride;
>>> +
>>> + GEM_BUG_ON(slice >= sseu->max_slices);
>>> +
>>> + /* Two ASCII character hex plus null terminator */
>>> + GEM_BUG_ON(size < sseu->ss_stride * 2 + 1);
>>> +
>>> + memset(buf, 0, size);
>>> +
>>> + /*
>>> + * Print subslice information in reverse order to match
>>> + * userspace expectations.
>>> + */
>>> + for (i = 0; i < sseu->ss_stride; i++)
>>> + sprintf(&buf[i * 2], "%02x",
>>> + sseu->subslice_mask[ss_offset + sseu->ss_stride
>>> -
>>> + (i + 1)]);
>>> +
>>> + return buf;
>>> +}
>>> +
>>> static void sseu_dump(const struct sseu_dev_info *sseu, struct
>>> drm_printer *p)
>>> {
>>> int s;
>>> + char buf[SS_STR_MAX_SIZE];
>>>
>>> drm_printf(p, "slice total: %u, mask=%04x\n",
>>> hweight8(sseu->slice_mask), sseu->slice_mask);
>>> drm_printf(p, "subslice total: %u\n",
>>> intel_sseu_subslice_total(sseu));
>>> for (s = 0; s < sseu->max_slices; s++) {
>>> - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
>>> + drm_printf(p, "slice%d: %u subslices, mask=%s\n",
>>> s, intel_sseu_subslices_per_slice(sseu, s),
>>> - sseu->subslice_mask[s]);
>>> + subslice_per_slice_str(buf, ARRAY_SIZE(buf),
>>> sseu, s));
>>
>> Now that we have intel_sseu_get_subslices() can't we just print the
>> return from that instead of using the buffer?
>
> I personally would prefer we keep the stringify function as it gives a
> little more flexibility. Do you have a strong preference to move to a
> direct printk formatted string?
>
I do not, it just seemed like duplication since you're not really using
any extra formatting or other flexibility in filling the buffer. This
isn't a lot of code, so maybe we can switch to just using the u32 for
now and add this back if/when we do require the flexibility?
>>
>>
>>> }
>>> drm_printf(p, "EU total: %u\n", sseu->eu_total);
>>> drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
>>
>> <snip>
>>
>>> @@ -555,6 +570,7 @@ static void haswell_sseu_info_init(struct
>>> drm_i915_private *dev_priv)
>>> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
>>> u32 fuse1;
>>> int s, ss;
>>> + u32 subslice_mask;
>>>
>>> /*
>>> * There isn't a register to tell us how many slices/subslices.
>>> We
>>> @@ -566,22 +582,18 @@ static void haswell_sseu_info_init(struct
>>> drm_i915_private *dev_priv)
>>> /* fall through */
>>> case 1:
>>> sseu->slice_mask = BIT(0);
>>> - sseu->subslice_mask[0] = BIT(0);
>>> + subslice_mask = BIT(0);
>>> break;
>>> case 2:
>>> sseu->slice_mask = BIT(0);
>>> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
>>> + subslice_mask = BIT(0) | BIT(1);
>>> break;
>>> case 3:
>>> sseu->slice_mask = BIT(0) | BIT(1);
>>> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
>>> - sseu->subslice_mask[1] = BIT(0) | BIT(1);
>>> + subslice_mask = BIT(0) | BIT(1);
>>> break;
>>> }
>>>
>>> - sseu->max_slices = hweight8(sseu->slice_mask);
>>> - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
>>> -
>>> fuse1 = I915_READ(HSW_PAVP_FUSE1);
>>> switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
>>> default:
>>> @@ -598,9 +610,14 @@ static void haswell_sseu_info_init(struct
>>> drm_i915_private *dev_priv)
>>> sseu->eu_per_subslice = 6;
>>> break;
>>> }
>>> - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
>>> +
>>> + intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
>>> + hweight8(subslice_mask),
>>> + sseu->eu_per_subslice);
>>
>> I'd still prefer this to use a local variable so that we always only
>> set
>> sseu->eu_per_subslice from within intel_sseu_set_info.
>
> So the reason I kept this is in intel_sseu_set_info we are really just
> setting the max_eus_per_subslice, not the eu_per_subslice. Are you
> saying you'd also like to move the code that sets eu_per_subslice in
> each generation's handler to local variables and/or just passed
> directly as an argument to intel_sseu_set_info?
My bad, I confused eu_per_subslice and max_eus_per_subslice as the same
variable. Just ignore this comment :)
Daniele
>
> I.e. should we use intel_sseu_set_info to set most or all of the
> members of the intel_sseu structure? Or is it OK to keep the current
> implementation of only using this to set default maximums per platform?
>
> -Stuart
>
>>
>> Daniele
>>
>>>
>>> for (s = 0; s < sseu->max_slices; s++) {
>>> + intel_sseu_set_subslices(sseu, s, subslice_mask);
>>> +
>>> for (ss = 0; ss < sseu->max_subslices; ss++) {
>>> intel_sseu_set_eus(sseu, s, ss,
>>> (1UL << sseu-
>>>> eu_per_subslice) - 1);
>>>
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-07 21:16 ` Daniele Ceraolo Spurio
@ 2019-05-07 21:19 ` Summers, Stuart
0 siblings, 0 replies; 25+ messages in thread
From: Summers, Stuart @ 2019-05-07 21:19 UTC (permalink / raw)
To: Ceraolo Spurio, Daniele, intel-gfx
[-- Attachment #1.1: Type: text/plain, Size: 6274 bytes --]
On Tue, 2019-05-07 at 14:16 -0700, Daniele Ceraolo Spurio wrote:
> <snip>
>
> > >
> > > > --- a/drivers/gpu/drm/i915/intel_device_info.c
> > > > +++ b/drivers/gpu/drm/i915/intel_device_info.c
> > > > @@ -84,17 +84,46 @@ void intel_device_info_dump_flags(const
> > > > struct
> > > > intel_device_info *info,
> > > > #undef PRINT_FLAG
> > > > }
> > > >
> > > > +#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2 + 1)
> > > > +
> > > > +static char *
> > > > +subslice_per_slice_str(char *buf, u8 size, const struct
> > > > sseu_dev_info *sseu,
> > > > + u8 slice)
> > > > +{
> > > > + int i;
> > > > + u8 ss_offset = slice * sseu->ss_stride;
> > > > +
> > > > + GEM_BUG_ON(slice >= sseu->max_slices);
> > > > +
> > > > + /* Two ASCII character hex plus null terminator */
> > > > + GEM_BUG_ON(size < sseu->ss_stride * 2 + 1);
> > > > +
> > > > + memset(buf, 0, size);
> > > > +
> > > > + /*
> > > > + * Print subslice information in reverse order to match
> > > > + * userspace expectations.
> > > > + */
> > > > + for (i = 0; i < sseu->ss_stride; i++)
> > > > + sprintf(&buf[i * 2], "%02x",
> > > > + sseu->subslice_mask[ss_offset + sseu-
> > > > >ss_stride
> > > > -
> > > > + (i + 1)]);
> > > > +
> > > > + return buf;
> > > > +}
> > > > +
> > > > static void sseu_dump(const struct sseu_dev_info *sseu,
> > > > struct
> > > > drm_printer *p)
> > > > {
> > > > int s;
> > > > + char buf[SS_STR_MAX_SIZE];
> > > >
> > > > drm_printf(p, "slice total: %u, mask=%04x\n",
> > > > hweight8(sseu->slice_mask), sseu-
> > > > >slice_mask);
> > > > drm_printf(p, "subslice total: %u\n",
> > > > intel_sseu_subslice_total(sseu));
> > > > for (s = 0; s < sseu->max_slices; s++) {
> > > > - drm_printf(p, "slice%d: %u subslices,
> > > > mask=%04x\n",
> > > > + drm_printf(p, "slice%d: %u subslices,
> > > > mask=%s\n",
> > > > s,
> > > > intel_sseu_subslices_per_slice(sseu, s),
> > > > - sseu->subslice_mask[s]);
> > > > + subslice_per_slice_str(buf,
> > > > ARRAY_SIZE(buf),
> > > > sseu, s));
> > >
> > > Now that we have intel_sseu_get_subslices() can't we just print
> > > the
> > > return from that instead of using the buffer?
> >
> > I personally would prefer we keep the stringify function as it
> > gives a
> > little more flexibility. Do you have a strong preference to move to
> > a
> > direct printk formatted string?
> >
>
> I do not, it just seemed like duplication since you're not really
> using
> any extra formatting or other flexibility in filling the buffer.
> This
> isn't a lot of code, so maybe we can switch to just using the u32
> for
> now and add this back if/when we do require the flexibility?
Makes sense and thanks for the feedback. I'll revert back to the printk
format.
>
> > >
> > >
> > > > }
> > > > drm_printf(p, "EU total: %u\n", sseu->eu_total);
> > > > drm_printf(p, "EU per subslice: %u\n", sseu-
> > > > >eu_per_subslice);
> > >
> > > <snip>
> > >
> > > > @@ -555,6 +570,7 @@ static void haswell_sseu_info_init(struct
> > > > drm_i915_private *dev_priv)
> > > > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > > > >sseu;
> > > > u32 fuse1;
> > > > int s, ss;
> > > > + u32 subslice_mask;
> > > >
> > > > /*
> > > > * There isn't a register to tell us how many
> > > > slices/subslices.
> > > > We
> > > > @@ -566,22 +582,18 @@ static void haswell_sseu_info_init(struct
> > > > drm_i915_private *dev_priv)
> > > > /* fall through */
> > > > case 1:
> > > > sseu->slice_mask = BIT(0);
> > > > - sseu->subslice_mask[0] = BIT(0);
> > > > + subslice_mask = BIT(0);
> > > > break;
> > > > case 2:
> > > > sseu->slice_mask = BIT(0);
> > > > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > > > + subslice_mask = BIT(0) | BIT(1);
> > > > break;
> > > > case 3:
> > > > sseu->slice_mask = BIT(0) | BIT(1);
> > > > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > > > - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> > > > + subslice_mask = BIT(0) | BIT(1);
> > > > break;
> > > > }
> > > >
> > > > - sseu->max_slices = hweight8(sseu->slice_mask);
> > > > - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> > > > -
> > > > fuse1 = I915_READ(HSW_PAVP_FUSE1);
> > > > switch ((fuse1 & HSW_F1_EU_DIS_MASK) >>
> > > > HSW_F1_EU_DIS_SHIFT) {
> > > > default:
> > > > @@ -598,9 +610,14 @@ static void haswell_sseu_info_init(struct
> > > > drm_i915_private *dev_priv)
> > > > sseu->eu_per_subslice = 6;
> > > > break;
> > > > }
> > > > - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> > > > +
> > > > + intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
> > > > + hweight8(subslice_mask),
> > > > + sseu->eu_per_subslice);
> > >
> > > I'd still prefer this to use a local variable so that we always
> > > only
> > > set
> > > sseu->eu_per_subslice from within intel_sseu_set_info.
> >
> > So the reason I kept this is in intel_sseu_set_info we are really
> > just
> > setting the max_eus_per_subslice, not the eu_per_subslice. Are you
> > saying you'd also like to move the code that sets eu_per_subslice
> > in
> > each generation's handler to local variables and/or just passed
> > directly as an argument to intel_sseu_set_info?
>
> My bad, I confused eu_per_subslice and max_eus_per_subslice as the
> same
> variable. Just ignore this comment :)
No problem, thanks!
-Stuart
>
> Daniele
>
> >
> > I.e. should we use intel_sseu_set_info to set most or all of the
> > members of the intel_sseu structure? Or is it OK to keep the
> > current
> > implementation of only using this to set default maximums per
> > platform?
> >
> > -Stuart
> >
> > >
> > > Daniele
> > >
> > > >
> > > > for (s = 0; s < sseu->max_slices; s++) {
> > > > + intel_sseu_set_subslices(sseu, s,
> > > > subslice_mask);
> > > > +
> > > > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > > > intel_sseu_set_eus(sseu, s, ss,
> > > > (1UL << sseu-
> > > > > eu_per_subslice) - 1);
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-16 22:40 ` Daniele Ceraolo Spurio
@ 2019-05-21 15:52 ` Summers, Stuart
0 siblings, 0 replies; 25+ messages in thread
From: Summers, Stuart @ 2019-05-21 15:52 UTC (permalink / raw)
To: Ceraolo Spurio, Daniele, intel-gfx
[-- Attachment #1.1: Type: text/plain, Size: 25175 bytes --]
On Thu, 2019-05-16 at 15:40 -0700, Daniele Ceraolo Spurio wrote:
> <snip>
>
> > --- a/drivers/gpu/drm/i915/gt/intel_sseu.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
> > @@ -9,16 +9,18 @@
> >
> > #include <linux/types.h>
> > #include <linux/kernel.h>
> > +#include <linux/string.h>
>
> AFAICS this header is not needed anymore. With it removed:
>
> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Thanks for the review!
I do not believe I have push rights to drm-tip at this point. Can you
help with merging this series?
Thanks,
Stuart
>
> Daniele
>
> >
> > struct drm_i915_private;
> >
> > #define GEN_MAX_SLICES (6) /* CNL upper bound */
> > #define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
> > #define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries,
> > BITS_PER_BYTE)
> > +#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
> >
> > struct sseu_dev_info {
> > u8 slice_mask;
> > - u8 subslice_mask[GEN_MAX_SLICES];
> > + u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
> > u16 eu_total;
> > u8 eu_per_subslice;
> > u8 min_eu_in_pool;
> > @@ -33,6 +35,9 @@ struct sseu_dev_info {
> > u8 max_subslices;
> > u8 max_eus_per_subslice;
> >
> > + u8 ss_stride;
> > + u8 eu_stride;
> > +
> > /* We don't have more than 8 eus per subslice at the moment and
> > as we
> > * store eus enabled using bits, no need to multiply by eus per
> > * subslice.
> > @@ -63,12 +68,33 @@ intel_sseu_from_device_info(const struct
> > sseu_dev_info *sseu)
> > return value;
> > }
> >
> > +static inline bool
> > +intel_sseu_has_subslice(const struct sseu_dev_info *sseu, int
> > slice,
> > + int subslice)
> > +{
> > + u8 mask = sseu->subslice_mask[slice * sseu->ss_stride +
> > + subslice / BITS_PER_BYTE];
> > +
> > + return mask & BIT(subslice % BITS_PER_BYTE);
> > +}
> > +
> > +void intel_sseu_set_info(struct sseu_dev_info *sseu, u8
> > max_slices,
> > + u8 max_subslices, u8 max_eus_per_subslice);
> > +
> > unsigned int
> > intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
> >
> > unsigned int
> > intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu,
> > u8 slice);
> >
> > +void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu,
> > int slice,
> > + u8 *to_mask);
> > +
> > +u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8
> > slice);
> > +
> > +void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int
> > slice,
> > + u32 ss_mask);
> > +
> > u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
> > const struct intel_sseu *req_sseu);
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > index 43e290306551..8437f9d918ec 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > @@ -767,7 +767,7 @@ wa_init_mcr(struct drm_i915_private *i915,
> > struct i915_wa_list *wal)
> > u32 slice = fls(sseu->slice_mask);
> > u32 fuse3 =
> > intel_uncore_read(&i915->uncore,
> > GEN10_MIRROR_FUSE3);
> > - u8 ss_mask = sseu->subslice_mask[slice];
> > + u32 ss_mask = intel_sseu_get_subslices(sseu, slice);
> >
> > u8 enabled_mask = (ss_mask | ss_mask >>
> > GEN10_L3BANK_PAIR_COUNT) &
> > GEN10_L3BANK_MASK;
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> > b/drivers/gpu/drm/i915/i915_debugfs.c
> > index a26015722405..46365ab957e6 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -1259,6 +1259,7 @@ static void i915_instdone_info(struct
> > drm_i915_private *dev_priv,
> > struct seq_file *m,
> > struct intel_instdone *instdone)
> > {
> > + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > int slice;
> > int subslice;
> >
> > @@ -1274,11 +1275,11 @@ static void i915_instdone_info(struct
> > drm_i915_private *dev_priv,
> > if (INTEL_GEN(dev_priv) <= 6)
> > return;
> >
> > - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > subslice)
> > seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice, instdone-
> > >sampler[slice][subslice]);
> >
> > - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > subslice)
> > seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice, instdone-
> > >row[slice][subslice]);
> > }
> > @@ -4072,7 +4073,7 @@ static void gen10_sseu_device_status(struct
> > drm_i915_private *dev_priv,
> > continue;
> >
> > sseu->slice_mask |= BIT(s);
> > - sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
> > + intel_sseu_copy_subslices(&info->sseu, s, sseu-
> > >subslice_mask);
> >
> > for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> > unsigned int eu_cnt;
> > @@ -4123,18 +4124,21 @@ static void gen9_sseu_device_status(struct
> > drm_i915_private *dev_priv,
> > sseu->slice_mask |= BIT(s);
> >
> > if (IS_GEN9_BC(dev_priv))
> > - sseu->subslice_mask[s] =
> > - RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_mask[s];
> > + intel_sseu_copy_subslices(&info->sseu, s,
> > + sseu->subslice_mask);
> >
> > for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> > unsigned int eu_cnt;
> > + u8 ss_idx = s * info->sseu.ss_stride +
> > + ss / BITS_PER_BYTE;
> >
> > if (IS_GEN9_LP(dev_priv)) {
> > if (!(s_reg[s] &
> > (GEN9_PGCTL_SS_ACK(ss))))
> > /* skip disabled subslice */
> > continue;
> >
> > - sseu->subslice_mask[s] |= BIT(ss);
> > + sseu->subslice_mask[ss_idx] |=
> > + BIT(ss % BITS_PER_BYTE);
> > }
> >
> > eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
> > @@ -4151,25 +4155,23 @@ static void gen9_sseu_device_status(struct
> > drm_i915_private *dev_priv,
> > static void broadwell_sseu_device_status(struct drm_i915_private
> > *dev_priv,
> > struct sseu_dev_info *sseu)
> > {
> > + struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> > u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
> > int s;
> >
> > sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
> >
> > if (sseu->slice_mask) {
> > - sseu->eu_per_subslice =
> > - RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
> > - for (s = 0; s < fls(sseu->slice_mask); s++) {
> > - sseu->subslice_mask[s] =
> > - RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_mask[s];
> > - }
> > + sseu->eu_per_subslice = info->sseu.eu_per_subslice;
> > + for (s = 0; s < fls(sseu->slice_mask); s++)
> > + intel_sseu_copy_subslices(&info->sseu, s,
> > + sseu->subslice_mask);
> > sseu->eu_total = sseu->eu_per_subslice *
> > intel_sseu_subslice_total(sseu);
> >
> > /* subtract fused off EU(s) from enabled slice(s) */
> > for (s = 0; s < fls(sseu->slice_mask); s++) {
> > - u8 subslice_7eu =
> > - RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_7eu[s];
> > + u8 subslice_7eu = info->sseu.subslice_7eu[s];
> >
> > sseu->eu_total -= hweight8(subslice_7eu);
> > }
> > @@ -4216,6 +4218,7 @@ static void i915_print_sseu_info(struct
> > seq_file *m, bool is_available_info,
> > static int i915_sseu_status(struct seq_file *m, void *unused)
> > {
> > struct drm_i915_private *dev_priv = node_to_i915(m->private);
> > + const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> > struct sseu_dev_info sseu;
> > intel_wakeref_t wakeref;
> >
> > @@ -4223,14 +4226,13 @@ static int i915_sseu_status(struct seq_file
> > *m, void *unused)
> > return -ENODEV;
> >
> > seq_puts(m, "SSEU Device Info\n");
> > - i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
> > + i915_print_sseu_info(m, true, &info->sseu);
> >
> > seq_puts(m, "SSEU Device Status\n");
> > memset(&sseu, 0, sizeof(sseu));
> > - sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
> > - sseu.max_subslices = RUNTIME_INFO(dev_priv)-
> > >sseu.max_subslices;
> > - sseu.max_eus_per_subslice =
> > - RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
> > + intel_sseu_set_info(&sseu, info->sseu.max_slices,
> > + info->sseu.max_subslices,
> > + info->sseu.max_eus_per_subslice);
> >
> > with_intel_runtime_pm(dev_priv, wakeref) {
> > if (IS_CHERRYVIEW(dev_priv))
> > diff --git a/drivers/gpu/drm/i915/i915_drv.c
> > b/drivers/gpu/drm/i915/i915_drv.c
> > index 8a7d4dea8609..dc6bafc09b36 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.c
> > +++ b/drivers/gpu/drm/i915/i915_drv.c
> > @@ -331,7 +331,7 @@ static int i915_getparam_ioctl(struct
> > drm_device *dev, void *data,
> > struct pci_dev *pdev = dev_priv->drm.pdev;
> > const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > drm_i915_getparam_t *param = data;
> > - int value;
> > + int value = 0;
> >
> > switch (param->param) {
> > case I915_PARAM_IRQ_ACTIVE:
> > @@ -460,7 +460,9 @@ static int i915_getparam_ioctl(struct
> > drm_device *dev, void *data,
> > return -ENODEV;
> > break;
> > case I915_PARAM_SUBSLICE_MASK:
> > - value = sseu->subslice_mask[0];
> > + /* Only copy bits from the first slice */
> > + memcpy(&value, sseu->subslice_mask,
> > + min(sseu->ss_stride, (u8)sizeof(value)));
> > if (!value)
> > return -ENODEV;
> > break;
> > diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
> > b/drivers/gpu/drm/i915/i915_gpu_error.c
> > index 4f85cbdddb0d..c760cc5b3388 100644
> > --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> > +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> > @@ -408,6 +408,7 @@ static void print_error_buffers(struct
> > drm_i915_error_state_buf *m,
> > static void error_print_instdone(struct drm_i915_error_state_buf
> > *m,
> > const struct drm_i915_error_engine
> > *ee)
> > {
> > + struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
> > int slice;
> > int subslice;
> >
> > @@ -423,12 +424,12 @@ static void error_print_instdone(struct
> > drm_i915_error_state_buf *m,
> > if (INTEL_GEN(m->i915) <= 6)
> > return;
> >
> > - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> > + for_each_instdone_slice_subslice(m->i915, sseu, slice,
> > subslice)
> > err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice,
> > ee->instdone.sampler[slice][subslice]);
> >
> > - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> > + for_each_instdone_slice_subslice(m->i915, sseu, slice,
> > subslice)
> > err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice,
> > ee->instdone.row[slice][subslice]);
> > diff --git a/drivers/gpu/drm/i915/i915_query.c
> > b/drivers/gpu/drm/i915/i915_query.c
> > index 7c1708c22811..000dcb145ce0 100644
> > --- a/drivers/gpu/drm/i915/i915_query.c
> > +++ b/drivers/gpu/drm/i915/i915_query.c
> > @@ -37,8 +37,6 @@ static int query_topology_info(struct
> > drm_i915_private *dev_priv,
> > const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > struct drm_i915_query_topology_info topo;
> > u32 slice_length, subslice_length, eu_length, total_length;
> > - u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> > - u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > int ret;
> >
> > if (query_item->flags != 0)
> > @@ -50,8 +48,8 @@ static int query_topology_info(struct
> > drm_i915_private *dev_priv,
> > BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
> >
> > slice_length = sizeof(sseu->slice_mask);
> > - subslice_length = sseu->max_slices * subslice_stride;
> > - eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
> > + subslice_length = sseu->max_slices * sseu->ss_stride;
> > + eu_length = sseu->max_slices * sseu->max_subslices * sseu-
> > >eu_stride;
> > total_length = sizeof(topo) + slice_length + subslice_length +
> > eu_length;
> >
> > @@ -69,9 +67,9 @@ static int query_topology_info(struct
> > drm_i915_private *dev_priv,
> > topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
> >
> > topo.subslice_offset = slice_length;
> > - topo.subslice_stride = subslice_stride;
> > + topo.subslice_stride = sseu->ss_stride;
> > topo.eu_offset = slice_length + subslice_length;
> > - topo.eu_stride = eu_stride;
> > + topo.eu_stride = sseu->eu_stride;
> >
> > if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
> > &topo, sizeof(topo)))
> > diff --git a/drivers/gpu/drm/i915/intel_device_info.c
> > b/drivers/gpu/drm/i915/intel_device_info.c
> > index 97f742530fa1..3625f777f3a3 100644
> > --- a/drivers/gpu/drm/i915/intel_device_info.c
> > +++ b/drivers/gpu/drm/i915/intel_device_info.c
> > @@ -92,9 +92,9 @@ static void sseu_dump(const struct sseu_dev_info
> > *sseu, struct drm_printer *p)
> > hweight8(sseu->slice_mask), sseu->slice_mask);
> > drm_printf(p, "subslice total: %u\n",
> > intel_sseu_subslice_total(sseu));
> > for (s = 0; s < sseu->max_slices; s++) {
> > - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> > + drm_printf(p, "slice%d: %u subslices, mask=%08x\n",
> > s, intel_sseu_subslices_per_slice(sseu, s),
> > - sseu->subslice_mask[s]);
> > + intel_sseu_get_subslices(sseu, s));
> > }
> > drm_printf(p, "EU total: %u\n", sseu->eu_total);
> > drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
> > @@ -117,10 +117,9 @@ void intel_device_info_dump_runtime(const
> > struct intel_runtime_info *info,
> > static int sseu_eu_idx(const struct sseu_dev_info *sseu, int
> > slice,
> > int subslice)
> > {
> > - int subslice_stride = GEN_SSEU_STRIDE(sseu-
> > >max_eus_per_subslice);
> > - int slice_stride = sseu->max_subslices * subslice_stride;
> > + int slice_stride = sseu->max_subslices * sseu->eu_stride;
> >
> > - return slice * slice_stride + subslice * subslice_stride;
> > + return slice * slice_stride + subslice * sseu->eu_stride;
> > }
> >
> > static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int
> > slice,
> > @@ -129,7 +128,7 @@ static u16 sseu_get_eus(const struct
> > sseu_dev_info *sseu, int slice,
> > int i, offset = sseu_eu_idx(sseu, slice, subslice);
> > u16 eu_mask = 0;
> >
> > - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > i++) {
> > + for (i = 0; i < sseu->eu_stride; i++) {
> > eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
> > (i * BITS_PER_BYTE);
> > }
> > @@ -142,7 +141,7 @@ static void sseu_set_eus(struct sseu_dev_info
> > *sseu, int slice, int subslice,
> > {
> > int i, offset = sseu_eu_idx(sseu, slice, subslice);
> >
> > - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > i++) {
> > + for (i = 0; i < sseu->eu_stride; i++) {
> > sseu->eu_mask[offset + i] =
> > (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
> > }
> > @@ -159,9 +158,9 @@ void intel_device_info_dump_topology(const
> > struct sseu_dev_info *sseu,
> > }
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > - drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
> > + drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n",
> > s, intel_sseu_subslices_per_slice(sseu, s),
> > - sseu->subslice_mask[s]);
> > + intel_sseu_get_subslices(sseu, s));
> >
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > u16 enabled_eus = sseu_get_eus(sseu, s, ss);
> > @@ -190,15 +189,10 @@ static void gen11_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > u8 eu_en;
> > int s;
> >
> > - if (IS_ELKHARTLAKE(dev_priv)) {
> > - sseu->max_slices = 1;
> > - sseu->max_subslices = 4;
> > - sseu->max_eus_per_subslice = 8;
> > - } else {
> > - sseu->max_slices = 1;
> > - sseu->max_subslices = 8;
> > - sseu->max_eus_per_subslice = 8;
> > - }
> > + if (IS_ELKHARTLAKE(dev_priv))
> > + intel_sseu_set_info(sseu, 1, 4, 8);
> > + else
> > + intel_sseu_set_info(sseu, 1, 8, 8);
> >
> > s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
> > ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
> > @@ -207,15 +201,15 @@ static void gen11_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > if (s_en & BIT(s)) {
> > - int ss_idx = sseu->max_subslices * s;
> > int ss;
> >
> > sseu->slice_mask |= BIT(s);
> > - sseu->subslice_mask[s] = (ss_en >> ss_idx) &
> > ss_en_mask;
> > - for (ss = 0; ss < sseu->max_subslices; ss++) {
> > - if (sseu->subslice_mask[s] & BIT(ss))
> > +
> > + intel_sseu_set_subslices(sseu, s, ss_en_mask);
> > +
> > + for (ss = 0; ss < sseu->max_subslices; ss++)
> > + if (intel_sseu_has_subslice(sseu, s,
> > ss))
> > sseu_set_eus(sseu, s, ss,
> > eu_en);
> > - }
> > }
> > }
> > sseu->eu_per_subslice = hweight8(eu_en);
> > @@ -235,23 +229,10 @@ static void gen10_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > const int eu_mask = 0xff;
> > u32 subslice_mask, eu_en;
> >
> > + intel_sseu_set_info(sseu, 6, 4, 8);
> > +
> > sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
> > GEN10_F2_S_ENA_SHIFT;
> > - sseu->max_slices = 6;
> > - sseu->max_subslices = 4;
> > - sseu->max_eus_per_subslice = 8;
> > -
> > - subslice_mask = (1 << 4) - 1;
> > - subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> > - GEN10_F2_SS_DIS_SHIFT);
> > -
> > - /*
> > - * Slice0 can have up to 3 subslices, but there are only 2 in
> > - * slice1/2.
> > - */
> > - sseu->subslice_mask[0] = subslice_mask;
> > - for (s = 1; s < sseu->max_slices; s++)
> > - sseu->subslice_mask[s] = subslice_mask & 0x3;
> >
> > /* Slice0 */
> > eu_en = ~I915_READ(GEN8_EU_DISABLE0);
> > @@ -276,14 +257,22 @@ static void gen10_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > eu_en = ~I915_READ(GEN10_EU_DISABLE3);
> > sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
> >
> > - /* Do a second pass where we mark the subslices disabled if all
> > their
> > - * eus are off.
> > - */
> > + subslice_mask = (1 << 4) - 1;
> > + subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> > + GEN10_F2_SS_DIS_SHIFT);
> > +
> > for (s = 0; s < sseu->max_slices; s++) {
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > if (sseu_get_eus(sseu, s, ss) == 0)
> > - sseu->subslice_mask[s] &= ~BIT(ss);
> > + subslice_mask &= ~BIT(ss);
> > }
> > +
> > + /*
> > + * Slice0 can have up to 3 subslices, but there are
> > only 2 in
> > + * slice1/2.
> > + */
> > + intel_sseu_set_subslices(sseu, s, s == 0 ?
> > subslice_mask :
> > + subslice_mas
> > k & 0x3);
> > }
> >
> > sseu->eu_total = compute_eu_total(sseu);
> > @@ -309,13 +298,12 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > {
> > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > u32 fuse;
> > + u8 subslice_mask;
> >
> > fuse = I915_READ(CHV_FUSE_GT);
> >
> > sseu->slice_mask = BIT(0);
> > - sseu->max_slices = 1;
> > - sseu->max_subslices = 2;
> > - sseu->max_eus_per_subslice = 8;
> > + intel_sseu_set_info(sseu, 1, 2, 8);
> >
> > if (!(fuse & CHV_FGT_DISABLE_SS0)) {
> > u8 disabled_mask =
> > @@ -324,7 +312,7 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
> > CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
> >
> > - sseu->subslice_mask[0] |= BIT(0);
> > + subslice_mask |= BIT(0);
> > sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> > }
> >
> > @@ -335,10 +323,12 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
> > CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
> >
> > - sseu->subslice_mask[0] |= BIT(1);
> > + subslice_mask |= BIT(1);
> > sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> > }
> >
> > + intel_sseu_set_subslices(sseu, 0, subslice_mask);
> > +
> > sseu->eu_total = compute_eu_total(sseu);
> >
> > /*
> > @@ -371,9 +361,8 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >>
> > GEN8_F2_S_ENA_SHIFT;
> >
> > /* BXT has a single slice and at most 3 subslices. */
> > - sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
> > - sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
> > - sseu->max_eus_per_subslice = 8;
> > + intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
> > + IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
> >
> > /*
> > * The subslice disable field is global, i.e. it applies
> > @@ -392,14 +381,14 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* skip disabled slice */
> > continue;
> >
> > - sseu->subslice_mask[s] = subslice_mask;
> > + intel_sseu_set_subslices(sseu, s, subslice_mask);
> >
> > eu_disable = I915_READ(GEN9_EU_DISABLE(s));
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > int eu_per_ss;
> > u8 eu_disabled_mask;
> >
> > - if (!(sseu->subslice_mask[s] & BIT(ss)))
> > + if (!intel_sseu_has_subslice(sseu, s, ss))
> > /* skip disabled subslice */
> > continue;
> >
> > @@ -472,9 +461,7 @@ static void broadwell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> >
> > fuse2 = I915_READ(GEN8_FUSE2);
> > sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >>
> > GEN8_F2_S_ENA_SHIFT;
> > - sseu->max_slices = 3;
> > - sseu->max_subslices = 3;
> > - sseu->max_eus_per_subslice = 8;
> > + intel_sseu_set_info(sseu, 3, 3, 8);
> >
> > /*
> > * The subslice disable field is global, i.e. it applies
> > @@ -501,18 +488,19 @@ static void broadwell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* skip disabled slice */
> > continue;
> >
> > - sseu->subslice_mask[s] = subslice_mask;
> > + intel_sseu_set_subslices(sseu, s, subslice_mask);
> >
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > u8 eu_disabled_mask;
> > u32 n_disabled;
> >
> > - if (!(sseu->subslice_mask[s] & BIT(ss)))
> > + if (!intel_sseu_has_subslice(sseu, s, ss))
> > /* skip disabled subslice */
> > continue;
> >
> > eu_disabled_mask =
> > - eu_disable[s] >> (ss * sseu-
> > >max_eus_per_subslice);
> > + eu_disable[s] >>
> > + (ss * sseu-
> > >max_eus_per_subslice);
> >
> > sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
> >
> > @@ -552,6 +540,7 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > u32 fuse1;
> > int s, ss;
> > + u32 subslice_mask;
> >
> > /*
> > * There isn't a register to tell us how many slices/subslices.
> > We
> > @@ -563,22 +552,18 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* fall through */
> > case 1:
> > sseu->slice_mask = BIT(0);
> > - sseu->subslice_mask[0] = BIT(0);
> > + subslice_mask = BIT(0);
> > break;
> > case 2:
> > sseu->slice_mask = BIT(0);
> > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > + subslice_mask = BIT(0) | BIT(1);
> > break;
> > case 3:
> > sseu->slice_mask = BIT(0) | BIT(1);
> > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> > + subslice_mask = BIT(0) | BIT(1);
> > break;
> > }
> >
> > - sseu->max_slices = hweight8(sseu->slice_mask);
> > - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> > -
> > fuse1 = I915_READ(HSW_PAVP_FUSE1);
> > switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
> > default:
> > @@ -595,9 +580,14 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->eu_per_subslice = 6;
> > break;
> > }
> > - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> > +
> > + intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
> > + hweight8(subslice_mask),
> > + sseu->eu_per_subslice);
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > + intel_sseu_set_subslices(sseu, s, subslice_mask);
> > +
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > sseu_set_eus(sseu, s, ss,
> > (1UL << sseu->eu_per_subslice) -
> > 1);
> >
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-13 20:56 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
@ 2019-05-16 22:40 ` Daniele Ceraolo Spurio
2019-05-21 15:52 ` Summers, Stuart
0 siblings, 1 reply; 25+ messages in thread
From: Daniele Ceraolo Spurio @ 2019-05-16 22:40 UTC (permalink / raw)
To: Stuart Summers, intel-gfx
<snip>
> --- a/drivers/gpu/drm/i915/gt/intel_sseu.h
> +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
> @@ -9,16 +9,18 @@
>
> #include <linux/types.h>
> #include <linux/kernel.h>
> +#include <linux/string.h>
AFAICS this header is not needed anymore. With it removed:
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Daniele
>
> struct drm_i915_private;
>
> #define GEN_MAX_SLICES (6) /* CNL upper bound */
> #define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
> #define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
> +#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
>
> struct sseu_dev_info {
> u8 slice_mask;
> - u8 subslice_mask[GEN_MAX_SLICES];
> + u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
> u16 eu_total;
> u8 eu_per_subslice;
> u8 min_eu_in_pool;
> @@ -33,6 +35,9 @@ struct sseu_dev_info {
> u8 max_subslices;
> u8 max_eus_per_subslice;
>
> + u8 ss_stride;
> + u8 eu_stride;
> +
> /* We don't have more than 8 eus per subslice at the moment and as we
> * store eus enabled using bits, no need to multiply by eus per
> * subslice.
> @@ -63,12 +68,33 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
> return value;
> }
>
> +static inline bool
> +intel_sseu_has_subslice(const struct sseu_dev_info *sseu, int slice,
> + int subslice)
> +{
> + u8 mask = sseu->subslice_mask[slice * sseu->ss_stride +
> + subslice / BITS_PER_BYTE];
> +
> + return mask & BIT(subslice % BITS_PER_BYTE);
> +}
> +
> +void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
> + u8 max_subslices, u8 max_eus_per_subslice);
> +
> unsigned int
> intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
>
> unsigned int
> intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
>
> +void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
> + u8 *to_mask);
> +
> +u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice);
> +
> +void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
> + u32 ss_mask);
> +
> u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
> const struct intel_sseu *req_sseu);
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index 43e290306551..8437f9d918ec 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -767,7 +767,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
> u32 slice = fls(sseu->slice_mask);
> u32 fuse3 =
> intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
> - u8 ss_mask = sseu->subslice_mask[slice];
> + u32 ss_mask = intel_sseu_get_subslices(sseu, slice);
>
> u8 enabled_mask = (ss_mask | ss_mask >>
> GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index a26015722405..46365ab957e6 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1259,6 +1259,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
> struct seq_file *m,
> struct intel_instdone *instdone)
> {
> + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> int slice;
> int subslice;
>
> @@ -1274,11 +1275,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
> if (INTEL_GEN(dev_priv) <= 6)
> return;
>
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
> seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice, instdone->sampler[slice][subslice]);
>
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
> seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice, instdone->row[slice][subslice]);
> }
> @@ -4072,7 +4073,7 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
> continue;
>
> sseu->slice_mask |= BIT(s);
> - sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
> + intel_sseu_copy_subslices(&info->sseu, s, sseu->subslice_mask);
>
> for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> unsigned int eu_cnt;
> @@ -4123,18 +4124,21 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
> sseu->slice_mask |= BIT(s);
>
> if (IS_GEN9_BC(dev_priv))
> - sseu->subslice_mask[s] =
> - RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
> + intel_sseu_copy_subslices(&info->sseu, s,
> + sseu->subslice_mask);
>
> for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> unsigned int eu_cnt;
> + u8 ss_idx = s * info->sseu.ss_stride +
> + ss / BITS_PER_BYTE;
>
> if (IS_GEN9_LP(dev_priv)) {
> if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
> /* skip disabled subslice */
> continue;
>
> - sseu->subslice_mask[s] |= BIT(ss);
> + sseu->subslice_mask[ss_idx] |=
> + BIT(ss % BITS_PER_BYTE);
> }
>
> eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
> @@ -4151,25 +4155,23 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
> static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
> struct sseu_dev_info *sseu)
> {
> + struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
> int s;
>
> sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
>
> if (sseu->slice_mask) {
> - sseu->eu_per_subslice =
> - RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
> - for (s = 0; s < fls(sseu->slice_mask); s++) {
> - sseu->subslice_mask[s] =
> - RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
> - }
> + sseu->eu_per_subslice = info->sseu.eu_per_subslice;
> + for (s = 0; s < fls(sseu->slice_mask); s++)
> + intel_sseu_copy_subslices(&info->sseu, s,
> + sseu->subslice_mask);
> sseu->eu_total = sseu->eu_per_subslice *
> intel_sseu_subslice_total(sseu);
>
> /* subtract fused off EU(s) from enabled slice(s) */
> for (s = 0; s < fls(sseu->slice_mask); s++) {
> - u8 subslice_7eu =
> - RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
> + u8 subslice_7eu = info->sseu.subslice_7eu[s];
>
> sseu->eu_total -= hweight8(subslice_7eu);
> }
> @@ -4216,6 +4218,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
> static int i915_sseu_status(struct seq_file *m, void *unused)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m->private);
> + const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> struct sseu_dev_info sseu;
> intel_wakeref_t wakeref;
>
> @@ -4223,14 +4226,13 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
> return -ENODEV;
>
> seq_puts(m, "SSEU Device Info\n");
> - i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
> + i915_print_sseu_info(m, true, &info->sseu);
>
> seq_puts(m, "SSEU Device Status\n");
> memset(&sseu, 0, sizeof(sseu));
> - sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
> - sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
> - sseu.max_eus_per_subslice =
> - RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
> + intel_sseu_set_info(&sseu, info->sseu.max_slices,
> + info->sseu.max_subslices,
> + info->sseu.max_eus_per_subslice);
>
> with_intel_runtime_pm(dev_priv, wakeref) {
> if (IS_CHERRYVIEW(dev_priv))
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 8a7d4dea8609..dc6bafc09b36 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -331,7 +331,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
> struct pci_dev *pdev = dev_priv->drm.pdev;
> const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> drm_i915_getparam_t *param = data;
> - int value;
> + int value = 0;
>
> switch (param->param) {
> case I915_PARAM_IRQ_ACTIVE:
> @@ -460,7 +460,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
> return -ENODEV;
> break;
> case I915_PARAM_SUBSLICE_MASK:
> - value = sseu->subslice_mask[0];
> + /* Only copy bits from the first slice */
> + memcpy(&value, sseu->subslice_mask,
> + min(sseu->ss_stride, (u8)sizeof(value)));
> if (!value)
> return -ENODEV;
> break;
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
> index 4f85cbdddb0d..c760cc5b3388 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -408,6 +408,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
> static void error_print_instdone(struct drm_i915_error_state_buf *m,
> const struct drm_i915_error_engine *ee)
> {
> + struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
> int slice;
> int subslice;
>
> @@ -423,12 +424,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
> if (INTEL_GEN(m->i915) <= 6)
> return;
>
> - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> + for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
> err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice,
> ee->instdone.sampler[slice][subslice]);
>
> - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> + for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
> err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice,
> ee->instdone.row[slice][subslice]);
> diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
> index 7c1708c22811..000dcb145ce0 100644
> --- a/drivers/gpu/drm/i915/i915_query.c
> +++ b/drivers/gpu/drm/i915/i915_query.c
> @@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
> const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> struct drm_i915_query_topology_info topo;
> u32 slice_length, subslice_length, eu_length, total_length;
> - u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> - u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> int ret;
>
> if (query_item->flags != 0)
> @@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
> BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
>
> slice_length = sizeof(sseu->slice_mask);
> - subslice_length = sseu->max_slices * subslice_stride;
> - eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
> + subslice_length = sseu->max_slices * sseu->ss_stride;
> + eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
> total_length = sizeof(topo) + slice_length + subslice_length +
> eu_length;
>
> @@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
> topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
>
> topo.subslice_offset = slice_length;
> - topo.subslice_stride = subslice_stride;
> + topo.subslice_stride = sseu->ss_stride;
> topo.eu_offset = slice_length + subslice_length;
> - topo.eu_stride = eu_stride;
> + topo.eu_stride = sseu->eu_stride;
>
> if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
> &topo, sizeof(topo)))
> diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
> index 97f742530fa1..3625f777f3a3 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.c
> +++ b/drivers/gpu/drm/i915/intel_device_info.c
> @@ -92,9 +92,9 @@ static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
> hweight8(sseu->slice_mask), sseu->slice_mask);
> drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
> for (s = 0; s < sseu->max_slices; s++) {
> - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> + drm_printf(p, "slice%d: %u subslices, mask=%08x\n",
> s, intel_sseu_subslices_per_slice(sseu, s),
> - sseu->subslice_mask[s]);
> + intel_sseu_get_subslices(sseu, s));
> }
> drm_printf(p, "EU total: %u\n", sseu->eu_total);
> drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
> @@ -117,10 +117,9 @@ void intel_device_info_dump_runtime(const struct intel_runtime_info *info,
> static int sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
> int subslice)
> {
> - int subslice_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> - int slice_stride = sseu->max_subslices * subslice_stride;
> + int slice_stride = sseu->max_subslices * sseu->eu_stride;
>
> - return slice * slice_stride + subslice * subslice_stride;
> + return slice * slice_stride + subslice * sseu->eu_stride;
> }
>
> static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
> @@ -129,7 +128,7 @@ static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
> int i, offset = sseu_eu_idx(sseu, slice, subslice);
> u16 eu_mask = 0;
>
> - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
> + for (i = 0; i < sseu->eu_stride; i++) {
> eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
> (i * BITS_PER_BYTE);
> }
> @@ -142,7 +141,7 @@ static void sseu_set_eus(struct sseu_dev_info *sseu, int slice, int subslice,
> {
> int i, offset = sseu_eu_idx(sseu, slice, subslice);
>
> - for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
> + for (i = 0; i < sseu->eu_stride; i++) {
> sseu->eu_mask[offset + i] =
> (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
> }
> @@ -159,9 +158,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
> }
>
> for (s = 0; s < sseu->max_slices; s++) {
> - drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
> + drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n",
> s, intel_sseu_subslices_per_slice(sseu, s),
> - sseu->subslice_mask[s]);
> + intel_sseu_get_subslices(sseu, s));
>
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> u16 enabled_eus = sseu_get_eus(sseu, s, ss);
> @@ -190,15 +189,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
> u8 eu_en;
> int s;
>
> - if (IS_ELKHARTLAKE(dev_priv)) {
> - sseu->max_slices = 1;
> - sseu->max_subslices = 4;
> - sseu->max_eus_per_subslice = 8;
> - } else {
> - sseu->max_slices = 1;
> - sseu->max_subslices = 8;
> - sseu->max_eus_per_subslice = 8;
> - }
> + if (IS_ELKHARTLAKE(dev_priv))
> + intel_sseu_set_info(sseu, 1, 4, 8);
> + else
> + intel_sseu_set_info(sseu, 1, 8, 8);
>
> s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
> ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
> @@ -207,15 +201,15 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
>
> for (s = 0; s < sseu->max_slices; s++) {
> if (s_en & BIT(s)) {
> - int ss_idx = sseu->max_subslices * s;
> int ss;
>
> sseu->slice_mask |= BIT(s);
> - sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
> - for (ss = 0; ss < sseu->max_subslices; ss++) {
> - if (sseu->subslice_mask[s] & BIT(ss))
> +
> + intel_sseu_set_subslices(sseu, s, ss_en_mask);
> +
> + for (ss = 0; ss < sseu->max_subslices; ss++)
> + if (intel_sseu_has_subslice(sseu, s, ss))
> sseu_set_eus(sseu, s, ss, eu_en);
> - }
> }
> }
> sseu->eu_per_subslice = hweight8(eu_en);
> @@ -235,23 +229,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
> const int eu_mask = 0xff;
> u32 subslice_mask, eu_en;
>
> + intel_sseu_set_info(sseu, 6, 4, 8);
> +
> sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
> GEN10_F2_S_ENA_SHIFT;
> - sseu->max_slices = 6;
> - sseu->max_subslices = 4;
> - sseu->max_eus_per_subslice = 8;
> -
> - subslice_mask = (1 << 4) - 1;
> - subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> - GEN10_F2_SS_DIS_SHIFT);
> -
> - /*
> - * Slice0 can have up to 3 subslices, but there are only 2 in
> - * slice1/2.
> - */
> - sseu->subslice_mask[0] = subslice_mask;
> - for (s = 1; s < sseu->max_slices; s++)
> - sseu->subslice_mask[s] = subslice_mask & 0x3;
>
> /* Slice0 */
> eu_en = ~I915_READ(GEN8_EU_DISABLE0);
> @@ -276,14 +257,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
> eu_en = ~I915_READ(GEN10_EU_DISABLE3);
> sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
>
> - /* Do a second pass where we mark the subslices disabled if all their
> - * eus are off.
> - */
> + subslice_mask = (1 << 4) - 1;
> + subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> + GEN10_F2_SS_DIS_SHIFT);
> +
> for (s = 0; s < sseu->max_slices; s++) {
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> if (sseu_get_eus(sseu, s, ss) == 0)
> - sseu->subslice_mask[s] &= ~BIT(ss);
> + subslice_mask &= ~BIT(ss);
> }
> +
> + /*
> + * Slice0 can have up to 3 subslices, but there are only 2 in
> + * slice1/2.
> + */
> + intel_sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
> + subslice_mask & 0x3);
> }
>
> sseu->eu_total = compute_eu_total(sseu);
> @@ -309,13 +298,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> {
> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 fuse;
> + u8 subslice_mask;
>
> fuse = I915_READ(CHV_FUSE_GT);
>
> sseu->slice_mask = BIT(0);
> - sseu->max_slices = 1;
> - sseu->max_subslices = 2;
> - sseu->max_eus_per_subslice = 8;
> + intel_sseu_set_info(sseu, 1, 2, 8);
>
> if (!(fuse & CHV_FGT_DISABLE_SS0)) {
> u8 disabled_mask =
> @@ -324,7 +312,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
> CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
>
> - sseu->subslice_mask[0] |= BIT(0);
> + subslice_mask |= BIT(0);
> sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> }
>
> @@ -335,10 +323,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
> CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
>
> - sseu->subslice_mask[0] |= BIT(1);
> + subslice_mask |= BIT(1);
> sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> }
>
> + intel_sseu_set_subslices(sseu, 0, subslice_mask);
> +
> sseu->eu_total = compute_eu_total(sseu);
>
> /*
> @@ -371,9 +361,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
>
> /* BXT has a single slice and at most 3 subslices. */
> - sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
> - sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
> - sseu->max_eus_per_subslice = 8;
> + intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
> + IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
>
> /*
> * The subslice disable field is global, i.e. it applies
> @@ -392,14 +381,14 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
> /* skip disabled slice */
> continue;
>
> - sseu->subslice_mask[s] = subslice_mask;
> + intel_sseu_set_subslices(sseu, s, subslice_mask);
>
> eu_disable = I915_READ(GEN9_EU_DISABLE(s));
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> int eu_per_ss;
> u8 eu_disabled_mask;
>
> - if (!(sseu->subslice_mask[s] & BIT(ss)))
> + if (!intel_sseu_has_subslice(sseu, s, ss))
> /* skip disabled subslice */
> continue;
>
> @@ -472,9 +461,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
>
> fuse2 = I915_READ(GEN8_FUSE2);
> sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
> - sseu->max_slices = 3;
> - sseu->max_subslices = 3;
> - sseu->max_eus_per_subslice = 8;
> + intel_sseu_set_info(sseu, 3, 3, 8);
>
> /*
> * The subslice disable field is global, i.e. it applies
> @@ -501,18 +488,19 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
> /* skip disabled slice */
> continue;
>
> - sseu->subslice_mask[s] = subslice_mask;
> + intel_sseu_set_subslices(sseu, s, subslice_mask);
>
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> u8 eu_disabled_mask;
> u32 n_disabled;
>
> - if (!(sseu->subslice_mask[s] & BIT(ss)))
> + if (!intel_sseu_has_subslice(sseu, s, ss))
> /* skip disabled subslice */
> continue;
>
> eu_disabled_mask =
> - eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
> + eu_disable[s] >>
> + (ss * sseu->max_eus_per_subslice);
>
> sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
>
> @@ -552,6 +540,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 fuse1;
> int s, ss;
> + u32 subslice_mask;
>
> /*
> * There isn't a register to tell us how many slices/subslices. We
> @@ -563,22 +552,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> /* fall through */
> case 1:
> sseu->slice_mask = BIT(0);
> - sseu->subslice_mask[0] = BIT(0);
> + subslice_mask = BIT(0);
> break;
> case 2:
> sseu->slice_mask = BIT(0);
> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> + subslice_mask = BIT(0) | BIT(1);
> break;
> case 3:
> sseu->slice_mask = BIT(0) | BIT(1);
> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> + subslice_mask = BIT(0) | BIT(1);
> break;
> }
>
> - sseu->max_slices = hweight8(sseu->slice_mask);
> - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> -
> fuse1 = I915_READ(HSW_PAVP_FUSE1);
> switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
> default:
> @@ -595,9 +580,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->eu_per_subslice = 6;
> break;
> }
> - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> +
> + intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
> + hweight8(subslice_mask),
> + sseu->eu_per_subslice);
>
> for (s = 0; s < sseu->max_slices; s++) {
> + intel_sseu_set_subslices(sseu, s, subslice_mask);
> +
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> sseu_set_eus(sseu, s, ss,
> (1UL << sseu->eu_per_subslice) - 1);
>
_______________________________________________
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^ permalink raw reply [flat|nested] 25+ messages in thread
* [PATCH 5/5] drm/i915: Expand subslice mask
2019-05-13 20:56 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
@ 2019-05-13 20:56 ` Stuart Summers
2019-05-16 22:40 ` Daniele Ceraolo Spurio
0 siblings, 1 reply; 25+ messages in thread
From: Stuart Summers @ 2019-05-13 20:56 UTC (permalink / raw)
To: intel-gfx
Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
v3: update headers in intel_sseu.h
v4: add const to some sseu_dev_info variables
use sseu->eu_stride for EU stride calculations
v5: address review comments from Tvrtko and Daniele
v6: remove extra space in intel_sseu_get_subslices
return the correct subslice enable in for_each_instdone
add GEM_BUG_ON to ensure user doesn't pass invalid ss_mask size
use printk formatted string for subslice mask
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 24 +++-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 30 ++---
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/intel_sseu.c | 47 ++++++-
drivers/gpu/drm/i915/gt/intel_sseu.h | 28 ++++-
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_debugfs.c | 40 +++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 122 +++++++++----------
11 files changed, 201 insertions(+), 116 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index 4c3753c1b573..3a5e0fefcab9 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -910,12 +910,30 @@ const char *i915_cache_level_str(struct drm_i915_private *i915, int type)
}
}
+static inline u32
+intel_sseu_fls_subslice(const struct sseu_dev_info *sseu, u32 slice)
+{
+ u32 subslice;
+ int i;
+
+ for (i = sseu->ss_stride - 1; i >= 0; i--) {
+ subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+ if (subslice) {
+ subslice += i * BITS_PER_BYTE;
+ break;
+ }
+ }
+
+ return subslice;
+}
+
u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
{
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = intel_sseu_fls_subslice(sseu, slice);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -991,6 +1009,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -1008,7 +1027,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index e381c1c73902..cf79df8d4f32 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -534,20 +534,20 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
- (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? 1 : ((sseu___)->slice_mask)) & \
+ BIT(slice___))
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ (IS_GEN(dev_priv__, 7) ? (1 & BIT(subslice__)) : \
+ intel_sseu_has_subslice(sseu__, slice__, subslice__))
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) % I915_MAX_SUBSLICES, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if((instdone_has_slice(dev_priv_, sseu_, slice_)) && \
+ (instdone_has_subslice(dev_priv_, sseu_, slice_, \
+ subslice_)))
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
index 3a4d09b80fa0..b19cd4cdcb5c 100644
--- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
@@ -51,6 +51,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -72,7 +73,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index a0756f006f5f..763b811f2c9d 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -8,6 +8,17 @@
#include "intel_lrc_reg.h"
#include "intel_sseu.h"
+void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
unsigned int
intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
{
@@ -19,10 +30,44 @@ intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
return total;
}
+void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &sseu->subslice_mask[offset], sseu->ss_stride);
+}
+
+u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i, offset = slice * sseu->ss_stride;
+ u32 mask;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ GEM_BUG_ON(sseu->ss_stride > sizeof(mask));
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ mask |= (u32)sseu->subslice_mask[offset + i] <<
+ i * BITS_PER_BYTE;
+
+ return mask;
+}
+
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
+}
+
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ return hweight32(intel_sseu_get_subslices(sseu, slice));
}
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index b50d0401a4e2..3602ae54b937 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -9,16 +9,18 @@
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/string.h>
struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -33,6 +35,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -63,12 +68,33 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline bool
+intel_sseu_has_subslice(const struct sseu_dev_info *sseu, int slice,
+ int subslice)
+{
+ u8 mask = sseu->subslice_mask[slice * sseu->ss_stride +
+ subslice / BITS_PER_BYTE];
+
+ return mask & BIT(subslice % BITS_PER_BYTE);
+}
+
+void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice);
+
unsigned int
intel_sseu_subslice_total(const struct sseu_dev_info *sseu);
unsigned int
intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice);
+void intel_sseu_copy_subslices(const struct sseu_dev_info *sseu, int slice,
+ u8 *to_mask);
+
+u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice);
+
+void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
+ u32 ss_mask);
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu);
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 43e290306551..8437f9d918ec 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -767,7 +767,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u32 ss_mask = intel_sseu_get_subslices(sseu, slice);
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index a26015722405..46365ab957e6 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1259,6 +1259,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1274,11 +1275,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4072,7 +4073,7 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s, sseu->subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4123,18 +4124,21 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4151,25 +4155,23 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ intel_sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
intel_sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4216,6 +4218,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4223,14 +4226,13 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ intel_sseu_set_info(&sseu, info->sseu.max_slices,
+ info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 8a7d4dea8609..dc6bafc09b36 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -331,7 +331,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = dev_priv->drm.pdev;
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -460,7 +460,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first slice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 4f85cbdddb0d..c760cc5b3388 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -408,6 +408,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -423,12 +424,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 97f742530fa1..3625f777f3a3 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -92,9 +92,9 @@ static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%08x\n",
s, intel_sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ intel_sseu_get_subslices(sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -117,10 +117,9 @@ void intel_device_info_dump_runtime(const struct intel_runtime_info *info,
static int sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
int subslice)
{
- int subslice_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
- int slice_stride = sseu->max_subslices * subslice_stride;
+ int slice_stride = sseu->max_subslices * sseu->eu_stride;
- return slice * slice_stride + subslice * subslice_stride;
+ return slice * slice_stride + subslice * sseu->eu_stride;
}
static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
@@ -129,7 +128,7 @@ static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
int i, offset = sseu_eu_idx(sseu, slice, subslice);
u16 eu_mask = 0;
- for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
+ for (i = 0; i < sseu->eu_stride; i++) {
eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
(i * BITS_PER_BYTE);
}
@@ -142,7 +141,7 @@ static void sseu_set_eus(struct sseu_dev_info *sseu, int slice, int subslice,
{
int i, offset = sseu_eu_idx(sseu, slice, subslice);
- for (i = 0; i < GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); i++) {
+ for (i = 0; i < sseu->eu_stride; i++) {
sseu->eu_mask[offset + i] =
(eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
@@ -159,9 +158,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n",
s, intel_sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ intel_sseu_get_subslices(sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = sseu_get_eus(sseu, s, ss);
@@ -190,15 +189,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ intel_sseu_set_info(sseu, 1, 4, 8);
+ else
+ intel_sseu_set_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -207,15 +201,15 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
for (s = 0; s < sseu->max_slices; s++) {
if (s_en & BIT(s)) {
- int ss_idx = sseu->max_subslices * s;
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+
+ intel_sseu_set_subslices(sseu, s, ss_en_mask);
+
+ for (ss = 0; ss < sseu->max_subslices; ss++)
+ if (intel_sseu_has_subslice(sseu, s, ss))
sseu_set_eus(sseu, s, ss, eu_en);
- }
}
}
sseu->eu_per_subslice = hweight8(eu_en);
@@ -235,23 +229,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ intel_sseu_set_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -276,14 +257,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ intel_sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -309,13 +298,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -324,7 +312,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -335,10 +323,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ intel_sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -371,9 +361,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -392,14 +381,14 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!intel_sseu_has_subslice(sseu, s, ss))
/* skip disabled subslice */
continue;
@@ -472,9 +461,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ intel_sseu_set_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -501,18 +488,19 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!intel_sseu_has_subslice(sseu, s, ss))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -552,6 +540,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -563,22 +552,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -595,9 +580,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
--
2.21.0.5.gaeb582a983
_______________________________________________
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Intel-gfx@lists.freedesktop.org
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^ permalink raw reply related [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-04-30 9:03 ` Jani Nikula
@ 2019-04-30 14:16 ` Summers, Stuart
0 siblings, 0 replies; 25+ messages in thread
From: Summers, Stuart @ 2019-04-30 14:16 UTC (permalink / raw)
To: intel-gfx, jani.nikula
[-- Attachment #1.1: Type: text/plain, Size: 31838 bytes --]
On Tue, 2019-04-30 at 12:03 +0300, Jani Nikula wrote:
> On Mon, 29 Apr 2019, Stuart Summers <stuart.summers@intel.com> wrote:
> > Currently, the subslice_mask runtime parameter is stored as an
> > array of subslices per slice. Expand the subslice mask array to
> > better match what is presented to userspace through the
> > I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
> > then calculated:
> > slice * subslice stride + subslice index / 8
> >
> > v2: fix spacing in set_sseu_info args
> > use set_sseu_info to initialize sseu data when building
> > device status in debugfs
> > rename variables in intel_engine_types.h to avoid checkpatch
> > warnings
> > v3: update headers in intel_sseu.h
> >
> > Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> > Signed-off-by: Stuart Summers <stuart.summers@intel.com>
> > ---
> > drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
> > drivers/gpu/drm/i915/gt/intel_engine_types.h | 32 +++--
> > drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
> > drivers/gpu/drm/i915/gt/intel_sseu.h | 45 +++++-
> > drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
> > drivers/gpu/drm/i915/i915_debugfs.c | 43 +++---
> > drivers/gpu/drm/i915/i915_drv.c | 6 +-
> > drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
> > drivers/gpu/drm/i915/i915_query.c | 10 +-
> > drivers/gpu/drm/i915/intel_device_info.c | 139 +++++++++++--
> > ------
> > 10 files changed, 183 insertions(+), 108 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > index f7308479d511..8922358ee6c6 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> > @@ -908,7 +908,7 @@ u32 intel_calculate_mcr_s_ss_select(struct
> > drm_i915_private *dev_priv)
> > const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > u32 mcr_s_ss_select;
> > u32 slice = fls(sseu->slice_mask);
> > - u32 subslice = fls(sseu->subslice_mask[slice]);
> > + u32 subslice = fls(sseu->subslice_mask[slice * sseu-
> > >ss_stride]);
> >
> > if (IS_GEN(dev_priv, 10))
> > mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
> > @@ -984,6 +984,7 @@ void intel_engine_get_instdone(struct
> > intel_engine_cs *engine,
> > struct intel_instdone *instdone)
> > {
> > struct drm_i915_private *dev_priv = engine->i915;
> > + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
>
> const?
>
> > struct intel_uncore *uncore = engine->uncore;
> > u32 mmio_base = engine->mmio_base;
> > int slice;
> > @@ -1001,7 +1002,8 @@ void intel_engine_get_instdone(struct
> > intel_engine_cs *engine,
> >
> > instdone->slice_common =
> > intel_uncore_read(uncore, GEN7_SC_INSTDONE);
> > - for_each_instdone_slice_subslice(dev_priv, slice,
> > subslice) {
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > + subslice) {
> > instdone->sampler[slice][subslice] =
> > read_subslice_reg(dev_priv, slice,
> > subslice,
> > GEN7_SAMPLER_INSTDONE
> > );
> > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > index d972c339309c..fa70528963a4 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> > @@ -534,20 +534,22 @@ intel_engine_needs_breadcrumb_tasklet(const
> > struct intel_engine_cs *engine)
> > return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
> > }
> >
> > -#define instdone_slice_mask(dev_priv__) \
> > - (IS_GEN(dev_priv__, 7) ? \
> > - 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
> > -
> > -#define instdone_subslice_mask(dev_priv__) \
> > - (IS_GEN(dev_priv__, 7) ? \
> > - 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
> > -
> > -#define for_each_instdone_slice_subslice(dev_priv__, slice__,
> > subslice__) \
> > - for ((slice__) = 0, (subslice__) = 0; \
> > - (slice__) < I915_MAX_SLICES; \
> > - (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ?
> > (subslice__) + 1 : 0, \
> > - (slice__) += ((subslice__) == 0)) \
> > - for_each_if((BIT(slice__) &
> > instdone_slice_mask(dev_priv__)) && \
> > - (BIT(subslice__) &
> > instdone_subslice_mask(dev_priv__)))
> > +#define instdone_has_slice(dev_priv___, sseu___, slice___) \
> > + ((IS_GEN(dev_priv___, 7) ? \
> > + 1 : (sseu___)->slice_mask) & \
> > + BIT(slice___)) \
> > +
> > +#define instdone_has_subslice(dev_priv__, sseu__, slice__,
> > subslice__) \
> > + ((IS_GEN(dev_priv__, 7) ? \
> > + 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
> > + subslice__ / BITS_PER_BYTE]) & \
> > + BIT(subslice__ % BITS_PER_BYTE)) \
> > +
> > +#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_,
> > subslice_) \
> > + for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES;
> > \
> > + (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ?
> > (subslice_) + 1 : 0, \
> > + (slice_) += ((subslice_) == 0)) \
> > + for_each_if(instdone_has_slice(dev_priv_, sseu_, slice)
> > && \
> > + instdone_has_subslice(dev_priv_, sseu_,
> > slice_, subslice_)) \
> >
> > #endif /* __INTEL_ENGINE_TYPES_H__ */
> > diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > index e5eaa06fe74d..95dfce65c00c 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> > @@ -50,6 +50,7 @@ static bool instdone_unchanged(u32
> > current_instdone, u32 *old_instdone)
> > static bool subunits_stuck(struct intel_engine_cs *engine)
> > {
> > struct drm_i915_private *dev_priv = engine->i915;
> > + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
>
> const?
Sure. I'll make these two changes in the next revision. Thanks for the
look!
-Stuart
>
> > struct intel_instdone instdone;
> > struct intel_instdone *accu_instdone = &engine-
> > >hangcheck.instdone;
> > bool stuck;
> > @@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs
> > *engine)
> > stuck &= instdone_unchanged(instdone.slice_common,
> > &accu_instdone->slice_common);
> >
> > - for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > subslice) {
> > stuck &=
> > instdone_unchanged(instdone.sampler[slice][subslice],
> > &accu_instdone-
> > >sampler[slice][subslice]);
> > stuck &=
> > instdone_unchanged(instdone.row[slice][subslice],
> > diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h
> > b/drivers/gpu/drm/i915/gt/intel_sseu.h
> > index 5127b4ff92bf..34b461da6735 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_sseu.h
> > +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
> > @@ -9,16 +9,18 @@
> >
> > #include <linux/types.h>
> > #include <linux/kernel.h>
> > +#include <linux/string.h>
> >
> > struct drm_i915_private;
> >
> > #define GEN_MAX_SLICES (6) /* CNL upper bound */
> > #define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
> > #define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
> > +#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
> >
> > struct sseu_dev_info {
> > u8 slice_mask;
> > - u8 subslice_mask[GEN_MAX_SLICES];
> > + u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
> > u16 eu_total;
> > u8 eu_per_subslice;
> > u8 min_eu_in_pool;
> > @@ -33,6 +35,9 @@ struct sseu_dev_info {
> > u8 max_subslices;
> > u8 max_eus_per_subslice;
> >
> > + u8 ss_stride;
> > + u8 eu_stride;
> > +
> > /* We don't have more than 8 eus per subslice at the moment and
> > as we
> > * store eus enabled using bits, no need to multiply by eus per
> > * subslice.
> > @@ -63,6 +68,17 @@ intel_sseu_from_device_info(const struct
> > sseu_dev_info *sseu)
> > return value;
> > }
> >
> > +static inline void set_sseu_info(struct sseu_dev_info *sseu, u8
> > max_slices,
> > + u8 max_subslices, u8
> > max_eus_per_subslice)
> > +{
> > + sseu->max_slices = max_slices;
> > + sseu->max_subslices = max_subslices;
> > + sseu->max_eus_per_subslice = max_eus_per_subslice;
> > +
> > + sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> > + sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > +}
> > +
> > static inline unsigned int sseu_subslice_total(const struct
> > sseu_dev_info *sseu)
> > {
> > unsigned int i, total = 0;
> > @@ -76,7 +92,32 @@ static inline unsigned int
> > sseu_subslice_total(const struct sseu_dev_info *sseu)
> > static inline unsigned int
> > sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8
> > slice)
> > {
> > - return hweight8(sseu->subslice_mask[slice]);
> > + unsigned int i, total = 0;
> > +
> > + for (i = 0; i < sseu->ss_stride; i++)
> > + total += hweight8(sseu->subslice_mask[slice * sseu-
> > >ss_stride +
> > + i]);
> > +
> > + return total;
> > +}
> > +
> > +static inline void sseu_copy_subslices(const struct sseu_dev_info
> > *sseu,
> > + int slice, u8 *to_mask,
> > + const u8 *from_mask)
> > +{
> > + int offset = slice * sseu->ss_stride;
> > +
> > + memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
> > +}
> > +
> > +static inline void sseu_set_subslices(struct sseu_dev_info *sseu,
> > + int slice, u32 ss_mask)
> > +{
> > + int i, offset = slice * sseu->ss_stride;
> > +
> > + for (i = 0; i < sseu->ss_stride; i++)
> > + sseu->subslice_mask[offset + i] =
> > + (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
> > }
> >
> > static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
> > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > index 5751446a4b0b..51df88873ff5 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> > @@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915,
> > struct i915_wa_list *wal)
> > u32 slice = fls(sseu->slice_mask);
> > u32 fuse3 =
> > intel_uncore_read(&i915->uncore,
> > GEN10_MIRROR_FUSE3);
> > - u8 ss_mask = sseu->subslice_mask[slice];
> > + u8 ss_mask = sseu->subslice_mask[slice * sseu-
> > >ss_stride];
> >
> > u8 enabled_mask = (ss_mask | ss_mask >>
> > GEN10_L3BANK_PAIR_COUNT) &
> > GEN10_L3BANK_MASK;
> > diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> > b/drivers/gpu/drm/i915/i915_debugfs.c
> > index 0ecf006d26b3..4f8d4370912f 100644
> > --- a/drivers/gpu/drm/i915/i915_debugfs.c
> > +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> > @@ -1256,6 +1256,7 @@ static void i915_instdone_info(struct
> > drm_i915_private *dev_priv,
> > struct seq_file *m,
> > struct intel_instdone *instdone)
> > {
> > + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > int slice;
> > int subslice;
> >
> > @@ -1271,11 +1272,11 @@ static void i915_instdone_info(struct
> > drm_i915_private *dev_priv,
> > if (INTEL_GEN(dev_priv) <= 6)
> > return;
> >
> > - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > subslice)
> > seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice, instdone-
> > >sampler[slice][subslice]);
> >
> > - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> > + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> > subslice)
> > seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice, instdone-
> > >row[slice][subslice]);
> > }
> > @@ -4065,7 +4066,9 @@ static void gen10_sseu_device_status(struct
> > drm_i915_private *dev_priv,
> > continue;
> >
> > sseu->slice_mask |= BIT(s);
> > - sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
> > + sseu_copy_subslices(&info->sseu, s,
> > + sseu->subslice_mask,
> > + info->sseu.subslice_mask);
> >
> > for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> > unsigned int eu_cnt;
> > @@ -4116,18 +4119,22 @@ static void gen9_sseu_device_status(struct
> > drm_i915_private *dev_priv,
> > sseu->slice_mask |= BIT(s);
> >
> > if (IS_GEN9_BC(dev_priv))
> > - sseu->subslice_mask[s] =
> > - RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_mask[s];
> > + sseu_copy_subslices(&info->sseu, s,
> > + sseu->subslice_mask,
> > + info->sseu.subslice_mask);
> >
> > for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> > unsigned int eu_cnt;
> > + u8 ss_idx = s * info->sseu.ss_stride +
> > + ss / BITS_PER_BYTE;
> >
> > if (IS_GEN9_LP(dev_priv)) {
> > if (!(s_reg[s] &
> > (GEN9_PGCTL_SS_ACK(ss))))
> > /* skip disabled subslice */
> > continue;
> >
> > - sseu->subslice_mask[s] |= BIT(ss);
> > + sseu->subslice_mask[ss_idx] |=
> > + BIT(ss % BITS_PER_BYTE);
> > }
> >
> > eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
> > @@ -4144,25 +4151,24 @@ static void gen9_sseu_device_status(struct
> > drm_i915_private *dev_priv,
> > static void broadwell_sseu_device_status(struct drm_i915_private
> > *dev_priv,
> > struct sseu_dev_info *sseu)
> > {
> > + struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> > u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
> > int s;
> >
> > sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
> >
> > if (sseu->slice_mask) {
> > - sseu->eu_per_subslice =
> > - RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
> > - for (s = 0; s < fls(sseu->slice_mask); s++) {
> > - sseu->subslice_mask[s] =
> > - RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_mask[s];
> > - }
> > + sseu->eu_per_subslice = info->sseu.eu_per_subslice;
> > + for (s = 0; s < fls(sseu->slice_mask); s++)
> > + sseu_copy_subslices(&info->sseu, s,
> > + sseu->subslice_mask,
> > + info->sseu.subslice_mask);
> > sseu->eu_total = sseu->eu_per_subslice *
> > sseu_subslice_total(sseu);
> >
> > /* subtract fused off EU(s) from enabled slice(s) */
> > for (s = 0; s < fls(sseu->slice_mask); s++) {
> > - u8 subslice_7eu =
> > - RUNTIME_INFO(dev_priv)-
> > >sseu.subslice_7eu[s];
> > + u8 subslice_7eu = info->sseu.subslice_7eu[s];
> >
> > sseu->eu_total -= hweight8(subslice_7eu);
> > }
> > @@ -4209,6 +4215,7 @@ static void i915_print_sseu_info(struct
> > seq_file *m, bool is_available_info,
> > static int i915_sseu_status(struct seq_file *m, void *unused)
> > {
> > struct drm_i915_private *dev_priv = node_to_i915(m->private);
> > + const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> > struct sseu_dev_info sseu;
> > intel_wakeref_t wakeref;
> >
> > @@ -4216,14 +4223,12 @@ static int i915_sseu_status(struct seq_file
> > *m, void *unused)
> > return -ENODEV;
> >
> > seq_puts(m, "SSEU Device Info\n");
> > - i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
> > + i915_print_sseu_info(m, true, &info->sseu);
> >
> > seq_puts(m, "SSEU Device Status\n");
> > memset(&sseu, 0, sizeof(sseu));
> > - sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
> > - sseu.max_subslices = RUNTIME_INFO(dev_priv)-
> > >sseu.max_subslices;
> > - sseu.max_eus_per_subslice =
> > - RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
> > + set_sseu_info(&sseu, info->sseu.max_slices, info-
> > >sseu.max_subslices,
> > + info->sseu.max_eus_per_subslice);
> >
> > with_intel_runtime_pm(dev_priv, wakeref) {
> > if (IS_CHERRYVIEW(dev_priv))
> > diff --git a/drivers/gpu/drm/i915/i915_drv.c
> > b/drivers/gpu/drm/i915/i915_drv.c
> > index b6ce7580d414..7a95c262aa14 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.c
> > +++ b/drivers/gpu/drm/i915/i915_drv.c
> > @@ -323,7 +323,7 @@ static int i915_getparam_ioctl(struct
> > drm_device *dev, void *data,
> > struct pci_dev *pdev = dev_priv->drm.pdev;
> > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > drm_i915_getparam_t *param = data;
> > - int value;
> > + int value = 0;
> >
> > switch (param->param) {
> > case I915_PARAM_IRQ_ACTIVE:
> > @@ -452,7 +452,9 @@ static int i915_getparam_ioctl(struct
> > drm_device *dev, void *data,
> > return -ENODEV;
> > break;
> > case I915_PARAM_SUBSLICE_MASK:
> > - value = sseu->subslice_mask[0];
> > + /* Only copy bits from the first subslice */
> > + memcpy(&value, sseu->subslice_mask,
> > + min(sseu->ss_stride, (u8)sizeof(value)));
> > if (!value)
> > return -ENODEV;
> > break;
> > diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
> > b/drivers/gpu/drm/i915/i915_gpu_error.c
> > index f51ff683dd2e..9da4118ad43a 100644
> > --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> > +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> > @@ -405,6 +405,7 @@ static void print_error_buffers(struct
> > drm_i915_error_state_buf *m,
> > static void error_print_instdone(struct drm_i915_error_state_buf
> > *m,
> > const struct drm_i915_error_engine
> > *ee)
> > {
> > + struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
> > int slice;
> > int subslice;
> >
> > @@ -420,12 +421,12 @@ static void error_print_instdone(struct
> > drm_i915_error_state_buf *m,
> > if (INTEL_GEN(m->i915) <= 6)
> > return;
> >
> > - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> > + for_each_instdone_slice_subslice(m->i915, sseu, slice,
> > subslice)
> > err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice,
> > ee->instdone.sampler[slice][subslice]);
> >
> > - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> > + for_each_instdone_slice_subslice(m->i915, sseu, slice,
> > subslice)
> > err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
> > slice, subslice,
> > ee->instdone.row[slice][subslice]);
> > diff --git a/drivers/gpu/drm/i915/i915_query.c
> > b/drivers/gpu/drm/i915/i915_query.c
> > index 7c1708c22811..000dcb145ce0 100644
> > --- a/drivers/gpu/drm/i915/i915_query.c
> > +++ b/drivers/gpu/drm/i915/i915_query.c
> > @@ -37,8 +37,6 @@ static int query_topology_info(struct
> > drm_i915_private *dev_priv,
> > const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)-
> > >sseu;
> > struct drm_i915_query_topology_info topo;
> > u32 slice_length, subslice_length, eu_length, total_length;
> > - u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> > - u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> > int ret;
> >
> > if (query_item->flags != 0)
> > @@ -50,8 +48,8 @@ static int query_topology_info(struct
> > drm_i915_private *dev_priv,
> > BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
> >
> > slice_length = sizeof(sseu->slice_mask);
> > - subslice_length = sseu->max_slices * subslice_stride;
> > - eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
> > + subslice_length = sseu->max_slices * sseu->ss_stride;
> > + eu_length = sseu->max_slices * sseu->max_subslices * sseu-
> > >eu_stride;
> > total_length = sizeof(topo) + slice_length + subslice_length +
> > eu_length;
> >
> > @@ -69,9 +67,9 @@ static int query_topology_info(struct
> > drm_i915_private *dev_priv,
> > topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
> >
> > topo.subslice_offset = slice_length;
> > - topo.subslice_stride = subslice_stride;
> > + topo.subslice_stride = sseu->ss_stride;
> > topo.eu_offset = slice_length + subslice_length;
> > - topo.eu_stride = eu_stride;
> > + topo.eu_stride = sseu->eu_stride;
> >
> > if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
> > &topo, sizeof(topo)))
> > diff --git a/drivers/gpu/drm/i915/intel_device_info.c
> > b/drivers/gpu/drm/i915/intel_device_info.c
> > index 559cf0d0628e..1cc72beb86ee 100644
> > --- a/drivers/gpu/drm/i915/intel_device_info.c
> > +++ b/drivers/gpu/drm/i915/intel_device_info.c
> > @@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct
> > intel_device_info *info,
> > #undef PRINT_FLAG
> > }
> >
> > +#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
> > +
> > +static u8 *
> > +subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu,
> > u8 slice)
> > +{
> > + int i;
> > + u8 ss_offset = slice * sseu->ss_stride;
> > +
> > + GEM_BUG_ON(slice >= sseu->max_slices);
> > +
> > + memset(buf, 0, SS_STR_MAX_SIZE);
> > +
> > + /*
> > + * Print subslice information in reverse order to match
> > + * userspace expectations.
> > + */
> > + for (i = 0; i < sseu->ss_stride; i++)
> > + sprintf(&buf[i * 2], "%02x",
> > + sseu->subslice_mask[ss_offset + sseu->ss_stride
> > -
> > + (i + 1)]);
> > +
> > + return buf;
> > +}
> > +
> > static void sseu_dump(const struct sseu_dev_info *sseu, struct
> > drm_printer *p)
> > {
> > int s;
> > + u8 buf[SS_STR_MAX_SIZE];
> >
> > drm_printf(p, "slice total: %u, mask=%04x\n",
> > hweight8(sseu->slice_mask), sseu->slice_mask);
> > drm_printf(p, "subslice total: %u\n",
> > sseu_subslice_total(sseu));
> > for (s = 0; s < sseu->max_slices; s++) {
> > - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> > + drm_printf(p, "slice%d: %u subslices, mask=%s\n",
> > s, sseu_subslices_per_slice(sseu, s),
> > - sseu->subslice_mask[s]);
> > + subslice_per_slice_str(buf, sseu, s));
> > }
> > drm_printf(p, "EU total: %u\n", sseu->eu_total);
> > drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
> > @@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const
> > struct sseu_dev_info *sseu,
> > struct drm_printer *p)
> > {
> > int s, ss;
> > + u8 buf[SS_STR_MAX_SIZE];
> >
> > if (sseu->max_slices == 0) {
> > drm_printf(p, "Unavailable\n");
> > @@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const
> > struct sseu_dev_info *sseu,
> > }
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > - drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
> > + drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
> > s, sseu_subslices_per_slice(sseu, s),
> > - sseu->subslice_mask[s]);
> > + subslice_per_slice_str(buf, sseu, s));
> >
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > u16 enabled_eus = sseu_get_eus(sseu, s, ss);
> > @@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > u8 eu_en;
> > int s;
> >
> > - if (IS_ELKHARTLAKE(dev_priv)) {
> > - sseu->max_slices = 1;
> > - sseu->max_subslices = 4;
> > - sseu->max_eus_per_subslice = 8;
> > - } else {
> > - sseu->max_slices = 1;
> > - sseu->max_subslices = 8;
> > - sseu->max_eus_per_subslice = 8;
> > - }
> > + if (IS_ELKHARTLAKE(dev_priv))
> > + set_sseu_info(sseu, 1, 4, 8);
> > + else
> > + set_sseu_info(sseu, 1, 8, 8);
> >
> > s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
> > ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
> > @@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > int ss;
> >
> > sseu->slice_mask |= BIT(s);
> > - sseu->subslice_mask[s] = (ss_en >> ss_idx) &
> > ss_en_mask;
> > + sseu->subslice_mask[s * sseu->ss_stride] =
> > + (ss_en >> ss_idx) & ss_en_mask;
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > - if (sseu->subslice_mask[s] & BIT(ss))
> > + if (sseu->subslice_mask[s * sseu-
> > >ss_stride] &
> > + BIT(ss))
> > sseu_set_eus(sseu, s, ss,
> > eu_en);
> > }
> > }
> > @@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > const int eu_mask = 0xff;
> > u32 subslice_mask, eu_en;
> >
> > + set_sseu_info(sseu, 6, 4, 8);
> > +
> > sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
> > GEN10_F2_S_ENA_SHIFT;
> > - sseu->max_slices = 6;
> > - sseu->max_subslices = 4;
> > - sseu->max_eus_per_subslice = 8;
> > -
> > - subslice_mask = (1 << 4) - 1;
> > - subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> > - GEN10_F2_SS_DIS_SHIFT);
> > -
> > - /*
> > - * Slice0 can have up to 3 subslices, but there are only 2 in
> > - * slice1/2.
> > - */
> > - sseu->subslice_mask[0] = subslice_mask;
> > - for (s = 1; s < sseu->max_slices; s++)
> > - sseu->subslice_mask[s] = subslice_mask & 0x3;
> >
> > /* Slice0 */
> > eu_en = ~I915_READ(GEN8_EU_DISABLE0);
> > @@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > eu_en = ~I915_READ(GEN10_EU_DISABLE3);
> > sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
> >
> > - /* Do a second pass where we mark the subslices disabled if all
> > their
> > - * eus are off.
> > - */
> > + subslice_mask = (1 << 4) - 1;
> > + subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> > + GEN10_F2_SS_DIS_SHIFT);
> > +
> > for (s = 0; s < sseu->max_slices; s++) {
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > if (sseu_get_eus(sseu, s, ss) == 0)
> > - sseu->subslice_mask[s] &= ~BIT(ss);
> > + subslice_mask &= ~BIT(ss);
> > }
> > +
> > + /*
> > + * Slice0 can have up to 3 subslices, but there are
> > only 2 in
> > + * slice1/2.
> > + */
> > + sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
> > + subslice_mask &
> > 0x3);
> > }
> >
> > sseu->eu_total = compute_eu_total(sseu);
> > @@ -274,13 +292,12 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > {
> > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > u32 fuse;
> > + u8 subslice_mask;
> >
> > fuse = I915_READ(CHV_FUSE_GT);
> >
> > sseu->slice_mask = BIT(0);
> > - sseu->max_slices = 1;
> > - sseu->max_subslices = 2;
> > - sseu->max_eus_per_subslice = 8;
> > + set_sseu_info(sseu, 1, 2, 8);
> >
> > if (!(fuse & CHV_FGT_DISABLE_SS0)) {
> > u8 disabled_mask =
> > @@ -289,7 +306,7 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
> > CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
> >
> > - sseu->subslice_mask[0] |= BIT(0);
> > + subslice_mask |= BIT(0);
> > sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> > }
> >
> > @@ -300,10 +317,12 @@ static void cherryview_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
> > CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
> >
> > - sseu->subslice_mask[0] |= BIT(1);
> > + subslice_mask |= BIT(1);
> > sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> > }
> >
> > + sseu_set_subslices(sseu, 0, subslice_mask);
> > +
> > sseu->eu_total = compute_eu_total(sseu);
> >
> > /*
> > @@ -335,9 +354,8 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >>
> > GEN8_F2_S_ENA_SHIFT;
> >
> > /* BXT has a single slice and at most 3 subslices. */
> > - sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
> > - sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
> > - sseu->max_eus_per_subslice = 8;
> > + set_sseu_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
> > + IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
> >
> > /*
> > * The subslice disable field is global, i.e. it applies
> > @@ -356,14 +374,16 @@ static void gen9_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* skip disabled slice */
> > continue;
> >
> > - sseu->subslice_mask[s] = subslice_mask;
> > + sseu_set_subslices(sseu, s, subslice_mask);
> >
> > eu_disable = I915_READ(GEN9_EU_DISABLE(s));
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > int eu_per_ss;
> > u8 eu_disabled_mask;
> > + u8 ss_idx = s * sseu->ss_stride + ss /
> > BITS_PER_BYTE;
> >
> > - if (!(sseu->subslice_mask[s] & BIT(ss)))
> > + if (!(sseu->subslice_mask[ss_idx] &
> > + BIT(ss % BITS_PER_BYTE)))
> > /* skip disabled subslice */
> > continue;
> >
> > @@ -435,9 +455,7 @@ static void broadwell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> >
> > fuse2 = I915_READ(GEN8_FUSE2);
> > sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >>
> > GEN8_F2_S_ENA_SHIFT;
> > - sseu->max_slices = 3;
> > - sseu->max_subslices = 3;
> > - sseu->max_eus_per_subslice = 8;
> > + set_sseu_info(sseu, 3, 3, 8);
> >
> > /*
> > * The subslice disable field is global, i.e. it applies
> > @@ -464,18 +482,21 @@ static void broadwell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* skip disabled slice */
> > continue;
> >
> > - sseu->subslice_mask[s] = subslice_mask;
> > + sseu_set_subslices(sseu, s, subslice_mask);
> >
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > u8 eu_disabled_mask;
> > + u8 ss_idx = s * sseu->ss_stride + ss /
> > BITS_PER_BYTE;
> > u32 n_disabled;
> >
> > - if (!(sseu->subslice_mask[s] & BIT(ss)))
> > + if (!(sseu->subslice_mask[ss_idx] &
> > + BIT(ss % BITS_PER_BYTE)))
> > /* skip disabled subslice */
> > continue;
> >
> > eu_disabled_mask =
> > - eu_disable[s] >> (ss * sseu-
> > >max_eus_per_subslice);
> > + eu_disable[s] >>
> > + (ss * sseu-
> > >max_eus_per_subslice);
> >
> > sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
> >
> > @@ -514,6 +535,7 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> > u32 fuse1;
> > int s, ss;
> > + u32 subslice_mask;
> >
> > /*
> > * There isn't a register to tell us how many slices/subslices.
> > We
> > @@ -525,22 +547,18 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > /* fall through */
> > case 1:
> > sseu->slice_mask = BIT(0);
> > - sseu->subslice_mask[0] = BIT(0);
> > + subslice_mask = BIT(0);
> > break;
> > case 2:
> > sseu->slice_mask = BIT(0);
> > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > + subslice_mask = BIT(0) | BIT(1);
> > break;
> > case 3:
> > sseu->slice_mask = BIT(0) | BIT(1);
> > - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> > - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> > + subslice_mask = BIT(0) | BIT(1);
> > break;
> > }
> >
> > - sseu->max_slices = hweight8(sseu->slice_mask);
> > - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> > -
> > fuse1 = I915_READ(HSW_PAVP_FUSE1);
> > switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
> > default:
> > @@ -557,9 +575,14 @@ static void haswell_sseu_info_init(struct
> > drm_i915_private *dev_priv)
> > sseu->eu_per_subslice = 6;
> > break;
> > }
> > - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> > +
> > + set_sseu_info(sseu, hweight8(sseu->slice_mask),
> > + hweight8(subslice_mask),
> > + sseu->eu_per_subslice);
> >
> > for (s = 0; s < sseu->max_slices; s++) {
> > + sseu_set_subslices(sseu, s, subslice_mask);
> > +
> > for (ss = 0; ss < sseu->max_subslices; ss++) {
> > sseu_set_eus(sseu, s, ss,
> > (1UL << sseu->eu_per_subslice) -
> > 1);
>
>
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^ permalink raw reply [flat|nested] 25+ messages in thread
* Re: [PATCH 5/5] drm/i915: Expand subslice mask
2019-04-29 15:51 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
@ 2019-04-30 9:03 ` Jani Nikula
2019-04-30 14:16 ` Summers, Stuart
0 siblings, 1 reply; 25+ messages in thread
From: Jani Nikula @ 2019-04-30 9:03 UTC (permalink / raw)
To: Stuart Summers, intel-gfx
On Mon, 29 Apr 2019, Stuart Summers <stuart.summers@intel.com> wrote:
> Currently, the subslice_mask runtime parameter is stored as an
> array of subslices per slice. Expand the subslice mask array to
> better match what is presented to userspace through the
> I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
> then calculated:
> slice * subslice stride + subslice index / 8
>
> v2: fix spacing in set_sseu_info args
> use set_sseu_info to initialize sseu data when building
> device status in debugfs
> rename variables in intel_engine_types.h to avoid checkpatch
> warnings
> v3: update headers in intel_sseu.h
>
> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> Signed-off-by: Stuart Summers <stuart.summers@intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
> drivers/gpu/drm/i915/gt/intel_engine_types.h | 32 +++--
> drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
> drivers/gpu/drm/i915/gt/intel_sseu.h | 45 +++++-
> drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
> drivers/gpu/drm/i915/i915_debugfs.c | 43 +++---
> drivers/gpu/drm/i915/i915_drv.c | 6 +-
> drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
> drivers/gpu/drm/i915/i915_query.c | 10 +-
> drivers/gpu/drm/i915/intel_device_info.c | 139 +++++++++++--------
> 10 files changed, 183 insertions(+), 108 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> index f7308479d511..8922358ee6c6 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
> @@ -908,7 +908,7 @@ u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
> const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 mcr_s_ss_select;
> u32 slice = fls(sseu->slice_mask);
> - u32 subslice = fls(sseu->subslice_mask[slice]);
> + u32 subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride]);
>
> if (IS_GEN(dev_priv, 10))
> mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
> @@ -984,6 +984,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
> struct intel_instdone *instdone)
> {
> struct drm_i915_private *dev_priv = engine->i915;
> + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
const?
> struct intel_uncore *uncore = engine->uncore;
> u32 mmio_base = engine->mmio_base;
> int slice;
> @@ -1001,7 +1002,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
>
> instdone->slice_common =
> intel_uncore_read(uncore, GEN7_SC_INSTDONE);
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice,
> + subslice) {
> instdone->sampler[slice][subslice] =
> read_subslice_reg(dev_priv, slice, subslice,
> GEN7_SAMPLER_INSTDONE);
> diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> index d972c339309c..fa70528963a4 100644
> --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
> +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
> @@ -534,20 +534,22 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
> return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
> }
>
> -#define instdone_slice_mask(dev_priv__) \
> - (IS_GEN(dev_priv__, 7) ? \
> - 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
> -
> -#define instdone_subslice_mask(dev_priv__) \
> - (IS_GEN(dev_priv__, 7) ? \
> - 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
> -
> -#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
> - for ((slice__) = 0, (subslice__) = 0; \
> - (slice__) < I915_MAX_SLICES; \
> - (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
> - (slice__) += ((subslice__) == 0)) \
> - for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
> - (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
> +#define instdone_has_slice(dev_priv___, sseu___, slice___) \
> + ((IS_GEN(dev_priv___, 7) ? \
> + 1 : (sseu___)->slice_mask) & \
> + BIT(slice___)) \
> +
> +#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
> + ((IS_GEN(dev_priv__, 7) ? \
> + 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
> + subslice__ / BITS_PER_BYTE]) & \
> + BIT(subslice__ % BITS_PER_BYTE)) \
> +
> +#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
> + for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
> + (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ? (subslice_) + 1 : 0, \
> + (slice_) += ((subslice_) == 0)) \
> + for_each_if(instdone_has_slice(dev_priv_, sseu_, slice) && \
> + instdone_has_subslice(dev_priv_, sseu_, slice_, subslice_)) \
>
> #endif /* __INTEL_ENGINE_TYPES_H__ */
> diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> index e5eaa06fe74d..95dfce65c00c 100644
> --- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> +++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
> @@ -50,6 +50,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
> static bool subunits_stuck(struct intel_engine_cs *engine)
> {
> struct drm_i915_private *dev_priv = engine->i915;
> + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
const?
> struct intel_instdone instdone;
> struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
> bool stuck;
> @@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
> stuck &= instdone_unchanged(instdone.slice_common,
> &accu_instdone->slice_common);
>
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
> stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
> &accu_instdone->sampler[slice][subslice]);
> stuck &= instdone_unchanged(instdone.row[slice][subslice],
> diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
> index 5127b4ff92bf..34b461da6735 100644
> --- a/drivers/gpu/drm/i915/gt/intel_sseu.h
> +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
> @@ -9,16 +9,18 @@
>
> #include <linux/types.h>
> #include <linux/kernel.h>
> +#include <linux/string.h>
>
> struct drm_i915_private;
>
> #define GEN_MAX_SLICES (6) /* CNL upper bound */
> #define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
> #define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
> +#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
>
> struct sseu_dev_info {
> u8 slice_mask;
> - u8 subslice_mask[GEN_MAX_SLICES];
> + u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
> u16 eu_total;
> u8 eu_per_subslice;
> u8 min_eu_in_pool;
> @@ -33,6 +35,9 @@ struct sseu_dev_info {
> u8 max_subslices;
> u8 max_eus_per_subslice;
>
> + u8 ss_stride;
> + u8 eu_stride;
> +
> /* We don't have more than 8 eus per subslice at the moment and as we
> * store eus enabled using bits, no need to multiply by eus per
> * subslice.
> @@ -63,6 +68,17 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
> return value;
> }
>
> +static inline void set_sseu_info(struct sseu_dev_info *sseu, u8 max_slices,
> + u8 max_subslices, u8 max_eus_per_subslice)
> +{
> + sseu->max_slices = max_slices;
> + sseu->max_subslices = max_subslices;
> + sseu->max_eus_per_subslice = max_eus_per_subslice;
> +
> + sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> + sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> +}
> +
> static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
> {
> unsigned int i, total = 0;
> @@ -76,7 +92,32 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
> static inline unsigned int
> sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
> {
> - return hweight8(sseu->subslice_mask[slice]);
> + unsigned int i, total = 0;
> +
> + for (i = 0; i < sseu->ss_stride; i++)
> + total += hweight8(sseu->subslice_mask[slice * sseu->ss_stride +
> + i]);
> +
> + return total;
> +}
> +
> +static inline void sseu_copy_subslices(const struct sseu_dev_info *sseu,
> + int slice, u8 *to_mask,
> + const u8 *from_mask)
> +{
> + int offset = slice * sseu->ss_stride;
> +
> + memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
> +}
> +
> +static inline void sseu_set_subslices(struct sseu_dev_info *sseu,
> + int slice, u32 ss_mask)
> +{
> + int i, offset = slice * sseu->ss_stride;
> +
> + for (i = 0; i < sseu->ss_stride; i++)
> + sseu->subslice_mask[offset + i] =
> + (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
> }
>
> static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index 5751446a4b0b..51df88873ff5 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
> u32 slice = fls(sseu->slice_mask);
> u32 fuse3 =
> intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
> - u8 ss_mask = sseu->subslice_mask[slice];
> + u8 ss_mask = sseu->subslice_mask[slice * sseu->ss_stride];
>
> u8 enabled_mask = (ss_mask | ss_mask >>
> GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 0ecf006d26b3..4f8d4370912f 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1256,6 +1256,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
> struct seq_file *m,
> struct intel_instdone *instdone)
> {
> + struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> int slice;
> int subslice;
>
> @@ -1271,11 +1272,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
> if (INTEL_GEN(dev_priv) <= 6)
> return;
>
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
> seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice, instdone->sampler[slice][subslice]);
>
> - for_each_instdone_slice_subslice(dev_priv, slice, subslice)
> + for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
> seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice, instdone->row[slice][subslice]);
> }
> @@ -4065,7 +4066,9 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
> continue;
>
> sseu->slice_mask |= BIT(s);
> - sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
> + sseu_copy_subslices(&info->sseu, s,
> + sseu->subslice_mask,
> + info->sseu.subslice_mask);
>
> for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> unsigned int eu_cnt;
> @@ -4116,18 +4119,22 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
> sseu->slice_mask |= BIT(s);
>
> if (IS_GEN9_BC(dev_priv))
> - sseu->subslice_mask[s] =
> - RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
> + sseu_copy_subslices(&info->sseu, s,
> + sseu->subslice_mask,
> + info->sseu.subslice_mask);
>
> for (ss = 0; ss < info->sseu.max_subslices; ss++) {
> unsigned int eu_cnt;
> + u8 ss_idx = s * info->sseu.ss_stride +
> + ss / BITS_PER_BYTE;
>
> if (IS_GEN9_LP(dev_priv)) {
> if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
> /* skip disabled subslice */
> continue;
>
> - sseu->subslice_mask[s] |= BIT(ss);
> + sseu->subslice_mask[ss_idx] |=
> + BIT(ss % BITS_PER_BYTE);
> }
>
> eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
> @@ -4144,25 +4151,24 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
> static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
> struct sseu_dev_info *sseu)
> {
> + struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
> int s;
>
> sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
>
> if (sseu->slice_mask) {
> - sseu->eu_per_subslice =
> - RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
> - for (s = 0; s < fls(sseu->slice_mask); s++) {
> - sseu->subslice_mask[s] =
> - RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
> - }
> + sseu->eu_per_subslice = info->sseu.eu_per_subslice;
> + for (s = 0; s < fls(sseu->slice_mask); s++)
> + sseu_copy_subslices(&info->sseu, s,
> + sseu->subslice_mask,
> + info->sseu.subslice_mask);
> sseu->eu_total = sseu->eu_per_subslice *
> sseu_subslice_total(sseu);
>
> /* subtract fused off EU(s) from enabled slice(s) */
> for (s = 0; s < fls(sseu->slice_mask); s++) {
> - u8 subslice_7eu =
> - RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
> + u8 subslice_7eu = info->sseu.subslice_7eu[s];
>
> sseu->eu_total -= hweight8(subslice_7eu);
> }
> @@ -4209,6 +4215,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
> static int i915_sseu_status(struct seq_file *m, void *unused)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m->private);
> + const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
> struct sseu_dev_info sseu;
> intel_wakeref_t wakeref;
>
> @@ -4216,14 +4223,12 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
> return -ENODEV;
>
> seq_puts(m, "SSEU Device Info\n");
> - i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
> + i915_print_sseu_info(m, true, &info->sseu);
>
> seq_puts(m, "SSEU Device Status\n");
> memset(&sseu, 0, sizeof(sseu));
> - sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
> - sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
> - sseu.max_eus_per_subslice =
> - RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
> + set_sseu_info(&sseu, info->sseu.max_slices, info->sseu.max_subslices,
> + info->sseu.max_eus_per_subslice);
>
> with_intel_runtime_pm(dev_priv, wakeref) {
> if (IS_CHERRYVIEW(dev_priv))
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index b6ce7580d414..7a95c262aa14 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -323,7 +323,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
> struct pci_dev *pdev = dev_priv->drm.pdev;
> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> drm_i915_getparam_t *param = data;
> - int value;
> + int value = 0;
>
> switch (param->param) {
> case I915_PARAM_IRQ_ACTIVE:
> @@ -452,7 +452,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
> return -ENODEV;
> break;
> case I915_PARAM_SUBSLICE_MASK:
> - value = sseu->subslice_mask[0];
> + /* Only copy bits from the first subslice */
> + memcpy(&value, sseu->subslice_mask,
> + min(sseu->ss_stride, (u8)sizeof(value)));
> if (!value)
> return -ENODEV;
> break;
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
> index f51ff683dd2e..9da4118ad43a 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -405,6 +405,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
> static void error_print_instdone(struct drm_i915_error_state_buf *m,
> const struct drm_i915_error_engine *ee)
> {
> + struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
> int slice;
> int subslice;
>
> @@ -420,12 +421,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
> if (INTEL_GEN(m->i915) <= 6)
> return;
>
> - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> + for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
> err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice,
> ee->instdone.sampler[slice][subslice]);
>
> - for_each_instdone_slice_subslice(m->i915, slice, subslice)
> + for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
> err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
> slice, subslice,
> ee->instdone.row[slice][subslice]);
> diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
> index 7c1708c22811..000dcb145ce0 100644
> --- a/drivers/gpu/drm/i915/i915_query.c
> +++ b/drivers/gpu/drm/i915/i915_query.c
> @@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
> const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> struct drm_i915_query_topology_info topo;
> u32 slice_length, subslice_length, eu_length, total_length;
> - u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
> - u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
> int ret;
>
> if (query_item->flags != 0)
> @@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
> BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
>
> slice_length = sizeof(sseu->slice_mask);
> - subslice_length = sseu->max_slices * subslice_stride;
> - eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
> + subslice_length = sseu->max_slices * sseu->ss_stride;
> + eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
> total_length = sizeof(topo) + slice_length + subslice_length +
> eu_length;
>
> @@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
> topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
>
> topo.subslice_offset = slice_length;
> - topo.subslice_stride = subslice_stride;
> + topo.subslice_stride = sseu->ss_stride;
> topo.eu_offset = slice_length + subslice_length;
> - topo.eu_stride = eu_stride;
> + topo.eu_stride = sseu->eu_stride;
>
> if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
> &topo, sizeof(topo)))
> diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
> index 559cf0d0628e..1cc72beb86ee 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.c
> +++ b/drivers/gpu/drm/i915/intel_device_info.c
> @@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
> #undef PRINT_FLAG
> }
>
> +#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
> +
> +static u8 *
> +subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu, u8 slice)
> +{
> + int i;
> + u8 ss_offset = slice * sseu->ss_stride;
> +
> + GEM_BUG_ON(slice >= sseu->max_slices);
> +
> + memset(buf, 0, SS_STR_MAX_SIZE);
> +
> + /*
> + * Print subslice information in reverse order to match
> + * userspace expectations.
> + */
> + for (i = 0; i < sseu->ss_stride; i++)
> + sprintf(&buf[i * 2], "%02x",
> + sseu->subslice_mask[ss_offset + sseu->ss_stride -
> + (i + 1)]);
> +
> + return buf;
> +}
> +
> static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
> {
> int s;
> + u8 buf[SS_STR_MAX_SIZE];
>
> drm_printf(p, "slice total: %u, mask=%04x\n",
> hweight8(sseu->slice_mask), sseu->slice_mask);
> drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
> for (s = 0; s < sseu->max_slices; s++) {
> - drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
> + drm_printf(p, "slice%d: %u subslices, mask=%s\n",
> s, sseu_subslices_per_slice(sseu, s),
> - sseu->subslice_mask[s]);
> + subslice_per_slice_str(buf, sseu, s));
> }
> drm_printf(p, "EU total: %u\n", sseu->eu_total);
> drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
> @@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
> struct drm_printer *p)
> {
> int s, ss;
> + u8 buf[SS_STR_MAX_SIZE];
>
> if (sseu->max_slices == 0) {
> drm_printf(p, "Unavailable\n");
> @@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
> }
>
> for (s = 0; s < sseu->max_slices; s++) {
> - drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
> + drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
> s, sseu_subslices_per_slice(sseu, s),
> - sseu->subslice_mask[s]);
> + subslice_per_slice_str(buf, sseu, s));
>
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> u16 enabled_eus = sseu_get_eus(sseu, s, ss);
> @@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
> u8 eu_en;
> int s;
>
> - if (IS_ELKHARTLAKE(dev_priv)) {
> - sseu->max_slices = 1;
> - sseu->max_subslices = 4;
> - sseu->max_eus_per_subslice = 8;
> - } else {
> - sseu->max_slices = 1;
> - sseu->max_subslices = 8;
> - sseu->max_eus_per_subslice = 8;
> - }
> + if (IS_ELKHARTLAKE(dev_priv))
> + set_sseu_info(sseu, 1, 4, 8);
> + else
> + set_sseu_info(sseu, 1, 8, 8);
>
> s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
> ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
> @@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
> int ss;
>
> sseu->slice_mask |= BIT(s);
> - sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
> + sseu->subslice_mask[s * sseu->ss_stride] =
> + (ss_en >> ss_idx) & ss_en_mask;
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> - if (sseu->subslice_mask[s] & BIT(ss))
> + if (sseu->subslice_mask[s * sseu->ss_stride] &
> + BIT(ss))
> sseu_set_eus(sseu, s, ss, eu_en);
> }
> }
> @@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
> const int eu_mask = 0xff;
> u32 subslice_mask, eu_en;
>
> + set_sseu_info(sseu, 6, 4, 8);
> +
> sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
> GEN10_F2_S_ENA_SHIFT;
> - sseu->max_slices = 6;
> - sseu->max_subslices = 4;
> - sseu->max_eus_per_subslice = 8;
> -
> - subslice_mask = (1 << 4) - 1;
> - subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> - GEN10_F2_SS_DIS_SHIFT);
> -
> - /*
> - * Slice0 can have up to 3 subslices, but there are only 2 in
> - * slice1/2.
> - */
> - sseu->subslice_mask[0] = subslice_mask;
> - for (s = 1; s < sseu->max_slices; s++)
> - sseu->subslice_mask[s] = subslice_mask & 0x3;
>
> /* Slice0 */
> eu_en = ~I915_READ(GEN8_EU_DISABLE0);
> @@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
> eu_en = ~I915_READ(GEN10_EU_DISABLE3);
> sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
>
> - /* Do a second pass where we mark the subslices disabled if all their
> - * eus are off.
> - */
> + subslice_mask = (1 << 4) - 1;
> + subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
> + GEN10_F2_SS_DIS_SHIFT);
> +
> for (s = 0; s < sseu->max_slices; s++) {
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> if (sseu_get_eus(sseu, s, ss) == 0)
> - sseu->subslice_mask[s] &= ~BIT(ss);
> + subslice_mask &= ~BIT(ss);
> }
> +
> + /*
> + * Slice0 can have up to 3 subslices, but there are only 2 in
> + * slice1/2.
> + */
> + sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
> + subslice_mask & 0x3);
> }
>
> sseu->eu_total = compute_eu_total(sseu);
> @@ -274,13 +292,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> {
> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 fuse;
> + u8 subslice_mask;
>
> fuse = I915_READ(CHV_FUSE_GT);
>
> sseu->slice_mask = BIT(0);
> - sseu->max_slices = 1;
> - sseu->max_subslices = 2;
> - sseu->max_eus_per_subslice = 8;
> + set_sseu_info(sseu, 1, 2, 8);
>
> if (!(fuse & CHV_FGT_DISABLE_SS0)) {
> u8 disabled_mask =
> @@ -289,7 +306,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
> CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
>
> - sseu->subslice_mask[0] |= BIT(0);
> + subslice_mask |= BIT(0);
> sseu_set_eus(sseu, 0, 0, ~disabled_mask);
> }
>
> @@ -300,10 +317,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
> (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
> CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
>
> - sseu->subslice_mask[0] |= BIT(1);
> + subslice_mask |= BIT(1);
> sseu_set_eus(sseu, 0, 1, ~disabled_mask);
> }
>
> + sseu_set_subslices(sseu, 0, subslice_mask);
> +
> sseu->eu_total = compute_eu_total(sseu);
>
> /*
> @@ -335,9 +354,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
>
> /* BXT has a single slice and at most 3 subslices. */
> - sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
> - sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
> - sseu->max_eus_per_subslice = 8;
> + set_sseu_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
> + IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
>
> /*
> * The subslice disable field is global, i.e. it applies
> @@ -356,14 +374,16 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
> /* skip disabled slice */
> continue;
>
> - sseu->subslice_mask[s] = subslice_mask;
> + sseu_set_subslices(sseu, s, subslice_mask);
>
> eu_disable = I915_READ(GEN9_EU_DISABLE(s));
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> int eu_per_ss;
> u8 eu_disabled_mask;
> + u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
>
> - if (!(sseu->subslice_mask[s] & BIT(ss)))
> + if (!(sseu->subslice_mask[ss_idx] &
> + BIT(ss % BITS_PER_BYTE)))
> /* skip disabled subslice */
> continue;
>
> @@ -435,9 +455,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
>
> fuse2 = I915_READ(GEN8_FUSE2);
> sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
> - sseu->max_slices = 3;
> - sseu->max_subslices = 3;
> - sseu->max_eus_per_subslice = 8;
> + set_sseu_info(sseu, 3, 3, 8);
>
> /*
> * The subslice disable field is global, i.e. it applies
> @@ -464,18 +482,21 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
> /* skip disabled slice */
> continue;
>
> - sseu->subslice_mask[s] = subslice_mask;
> + sseu_set_subslices(sseu, s, subslice_mask);
>
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> u8 eu_disabled_mask;
> + u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
> u32 n_disabled;
>
> - if (!(sseu->subslice_mask[s] & BIT(ss)))
> + if (!(sseu->subslice_mask[ss_idx] &
> + BIT(ss % BITS_PER_BYTE)))
> /* skip disabled subslice */
> continue;
>
> eu_disabled_mask =
> - eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
> + eu_disable[s] >>
> + (ss * sseu->max_eus_per_subslice);
>
> sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
>
> @@ -514,6 +535,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
> u32 fuse1;
> int s, ss;
> + u32 subslice_mask;
>
> /*
> * There isn't a register to tell us how many slices/subslices. We
> @@ -525,22 +547,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> /* fall through */
> case 1:
> sseu->slice_mask = BIT(0);
> - sseu->subslice_mask[0] = BIT(0);
> + subslice_mask = BIT(0);
> break;
> case 2:
> sseu->slice_mask = BIT(0);
> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> + subslice_mask = BIT(0) | BIT(1);
> break;
> case 3:
> sseu->slice_mask = BIT(0) | BIT(1);
> - sseu->subslice_mask[0] = BIT(0) | BIT(1);
> - sseu->subslice_mask[1] = BIT(0) | BIT(1);
> + subslice_mask = BIT(0) | BIT(1);
> break;
> }
>
> - sseu->max_slices = hweight8(sseu->slice_mask);
> - sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
> -
> fuse1 = I915_READ(HSW_PAVP_FUSE1);
> switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
> default:
> @@ -557,9 +575,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
> sseu->eu_per_subslice = 6;
> break;
> }
> - sseu->max_eus_per_subslice = sseu->eu_per_subslice;
> +
> + set_sseu_info(sseu, hweight8(sseu->slice_mask),
> + hweight8(subslice_mask),
> + sseu->eu_per_subslice);
>
> for (s = 0; s < sseu->max_slices; s++) {
> + sseu_set_subslices(sseu, s, subslice_mask);
> +
> for (ss = 0; ss < sseu->max_subslices; ss++) {
> sseu_set_eus(sseu, s, ss,
> (1UL << sseu->eu_per_subslice) - 1);
--
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 25+ messages in thread
* [PATCH 5/5] drm/i915: Expand subslice mask
2019-04-29 15:51 [PATCH 0/5] Refactor to expand " Stuart Summers
@ 2019-04-29 15:51 ` Stuart Summers
2019-04-30 9:03 ` Jani Nikula
0 siblings, 1 reply; 25+ messages in thread
From: Stuart Summers @ 2019-04-29 15:51 UTC (permalink / raw)
To: intel-gfx
Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
v3: update headers in intel_sseu.h
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 32 +++--
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/intel_sseu.h | 45 +++++-
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_debugfs.c | 43 +++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 139 +++++++++++--------
10 files changed, 183 insertions(+), 108 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index f7308479d511..8922358ee6c6 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -908,7 +908,7 @@ u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride]);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -984,6 +984,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -1001,7 +1002,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index d972c339309c..fa70528963a4 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -534,20 +534,22 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
- (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? \
+ 1 : (sseu___)->slice_mask) & \
+ BIT(slice___)) \
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ ((IS_GEN(dev_priv__, 7) ? \
+ 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
+ subslice__ / BITS_PER_BYTE]) & \
+ BIT(subslice__ % BITS_PER_BYTE)) \
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ? (subslice_) + 1 : 0, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if(instdone_has_slice(dev_priv_, sseu_, slice) && \
+ instdone_has_subslice(dev_priv_, sseu_, slice_, subslice_)) \
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
index e5eaa06fe74d..95dfce65c00c 100644
--- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
@@ -50,6 +50,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 5127b4ff92bf..34b461da6735 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -9,16 +9,18 @@
#include <linux/types.h>
#include <linux/kernel.h>
+#include <linux/string.h>
struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -33,6 +35,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -63,6 +68,17 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline void set_sseu_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
{
unsigned int i, total = 0;
@@ -76,7 +92,32 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
static inline unsigned int
sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ unsigned int i, total = 0;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ total += hweight8(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+
+ return total;
+}
+
+static inline void sseu_copy_subslices(const struct sseu_dev_info *sseu,
+ int slice, u8 *to_mask,
+ const u8 *from_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
+}
+
+static inline void sseu_set_subslices(struct sseu_dev_info *sseu,
+ int slice, u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 5751446a4b0b..51df88873ff5 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u8 ss_mask = sseu->subslice_mask[slice * sseu->ss_stride];
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 0ecf006d26b3..4f8d4370912f 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1256,6 +1256,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1271,11 +1272,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4065,7 +4066,9 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4116,18 +4119,22 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4144,25 +4151,24 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4209,6 +4215,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4216,14 +4223,12 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ set_sseu_info(&sseu, info->sseu.max_slices, info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b6ce7580d414..7a95c262aa14 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -323,7 +323,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = dev_priv->drm.pdev;
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -452,7 +452,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first subslice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index f51ff683dd2e..9da4118ad43a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -405,6 +405,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -420,12 +421,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 559cf0d0628e..1cc72beb86ee 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
#undef PRINT_FLAG
}
+#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
+
+static u8 *
+subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i;
+ u8 ss_offset = slice * sseu->ss_stride;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ memset(buf, 0, SS_STR_MAX_SIZE);
+
+ /*
+ * Print subslice information in reverse order to match
+ * userspace expectations.
+ */
+ for (i = 0; i < sseu->ss_stride; i++)
+ sprintf(&buf[i * 2], "%02x",
+ sseu->subslice_mask[ss_offset + sseu->ss_stride -
+ (i + 1)]);
+
+ return buf;
+}
+
static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
{
int s;
+ u8 buf[SS_STR_MAX_SIZE];
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%s\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
struct drm_printer *p)
{
int s, ss;
+ u8 buf[SS_STR_MAX_SIZE];
if (sseu->max_slices == 0) {
drm_printf(p, "Unavailable\n");
@@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = sseu_get_eus(sseu, s, ss);
@@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ set_sseu_info(sseu, 1, 4, 8);
+ else
+ set_sseu_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
+ sseu->subslice_mask[s * sseu->ss_stride] =
+ (ss_en >> ss_idx) & ss_en_mask;
for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+ if (sseu->subslice_mask[s * sseu->ss_stride] &
+ BIT(ss))
sseu_set_eus(sseu, s, ss, eu_en);
}
}
@@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ set_sseu_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -274,13 +292,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -289,7 +306,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -300,10 +317,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -335,9 +354,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -356,14 +374,16 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
@@ -435,9 +455,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -464,18 +482,21 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -514,6 +535,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -525,22 +547,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -557,9 +575,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ set_sseu_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
--
2.21.0.5.gaeb582a983
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 5/5] drm/i915: Expand subslice mask
2019-04-26 20:24 [PATCH 0/5] Refactor to expand " Stuart Summers
@ 2019-04-26 20:24 ` Stuart Summers
0 siblings, 0 replies; 25+ messages in thread
From: Stuart Summers @ 2019-04-26 20:24 UTC (permalink / raw)
To: intel-gfx
Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 6 +-
drivers/gpu/drm/i915/gt/intel_engine_types.h | 32 +++--
drivers/gpu/drm/i915/gt/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/gt/intel_sseu.h | 44 +++++-
drivers/gpu/drm/i915/gt/intel_workarounds.c | 2 +-
drivers/gpu/drm/i915/i915_debugfs.c | 43 +++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 139 +++++++++++--------
10 files changed, 182 insertions(+), 108 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index f7308479d511..8922358ee6c6 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -908,7 +908,7 @@ u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride]);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -984,6 +984,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -1001,7 +1002,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h
index d972c339309c..fa70528963a4 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h
@@ -534,20 +534,22 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
- (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? \
+ 1 : (sseu___)->slice_mask) & \
+ BIT(slice___)) \
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ ((IS_GEN(dev_priv__, 7) ? \
+ 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
+ subslice__ / BITS_PER_BYTE]) & \
+ BIT(subslice__ % BITS_PER_BYTE)) \
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ? (subslice_) + 1 : 0, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if(instdone_has_slice(dev_priv_, sseu_, slice) && \
+ instdone_has_subslice(dev_priv_, sseu_, slice_, subslice_)) \
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/gt/intel_hangcheck.c b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
index e5eaa06fe74d..95dfce65c00c 100644
--- a/drivers/gpu/drm/i915/gt/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/intel_hangcheck.c
@@ -50,6 +50,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 0dfbed547da5..a659a827f640 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -14,10 +14,11 @@ struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -32,6 +33,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -62,6 +66,17 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline void set_sseu_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
{
unsigned int i, total = 0;
@@ -75,7 +90,32 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
static inline unsigned int
sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ unsigned int i, total = 0;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ total += hweight8(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+
+ return total;
+}
+
+static inline void sseu_copy_subslices(const struct sseu_dev_info *sseu,
+ int slice, u8 *to_mask,
+ const u8 *from_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
+}
+
+static inline void sseu_set_subslices(struct sseu_dev_info *sseu,
+ int slice, u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 5751446a4b0b..51df88873ff5 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u8 ss_mask = sseu->subslice_mask[slice * sseu->ss_stride];
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 0ecf006d26b3..4f8d4370912f 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1256,6 +1256,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1271,11 +1272,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4065,7 +4066,9 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4116,18 +4119,22 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4144,25 +4151,24 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4209,6 +4215,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4216,14 +4223,12 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ set_sseu_info(&sseu, info->sseu.max_slices, info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b6ce7580d414..7a95c262aa14 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -323,7 +323,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = dev_priv->drm.pdev;
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -452,7 +452,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first subslice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index f51ff683dd2e..9da4118ad43a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -405,6 +405,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -420,12 +421,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 559cf0d0628e..1cc72beb86ee 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
#undef PRINT_FLAG
}
+#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
+
+static u8 *
+subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i;
+ u8 ss_offset = slice * sseu->ss_stride;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ memset(buf, 0, SS_STR_MAX_SIZE);
+
+ /*
+ * Print subslice information in reverse order to match
+ * userspace expectations.
+ */
+ for (i = 0; i < sseu->ss_stride; i++)
+ sprintf(&buf[i * 2], "%02x",
+ sseu->subslice_mask[ss_offset + sseu->ss_stride -
+ (i + 1)]);
+
+ return buf;
+}
+
static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
{
int s;
+ u8 buf[SS_STR_MAX_SIZE];
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%s\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
struct drm_printer *p)
{
int s, ss;
+ u8 buf[SS_STR_MAX_SIZE];
if (sseu->max_slices == 0) {
drm_printf(p, "Unavailable\n");
@@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = sseu_get_eus(sseu, s, ss);
@@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ set_sseu_info(sseu, 1, 4, 8);
+ else
+ set_sseu_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
+ sseu->subslice_mask[s * sseu->ss_stride] =
+ (ss_en >> ss_idx) & ss_en_mask;
for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+ if (sseu->subslice_mask[s * sseu->ss_stride] &
+ BIT(ss))
sseu_set_eus(sseu, s, ss, eu_en);
}
}
@@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ set_sseu_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -274,13 +292,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -289,7 +306,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -300,10 +317,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -335,9 +354,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -356,14 +374,16 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
@@ -435,9 +455,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -464,18 +482,21 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -514,6 +535,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -525,22 +547,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -557,9 +575,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ set_sseu_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
--
2.21.0.5.gaeb582a983
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 5/5] drm/i915: Expand subslice mask
2019-04-25 22:24 [PATCH 0/5] Refactor to expand " Stuart Summers
@ 2019-04-25 22:24 ` Stuart Summers
0 siblings, 0 replies; 25+ messages in thread
From: Stuart Summers @ 2019-04-25 22:24 UTC (permalink / raw)
To: intel-gfx
Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 43 ++++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 139 +++++++++++++---------
drivers/gpu/drm/i915/intel_engine_cs.c | 6 +-
drivers/gpu/drm/i915/intel_engine_types.h | 32 ++---
drivers/gpu/drm/i915/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/intel_sseu.h | 44 ++++++-
drivers/gpu/drm/i915/intel_workarounds.c | 2 +-
10 files changed, 182 insertions(+), 108 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 19746249d57b..9bd304b83de3 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1250,6 +1250,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1265,11 +1266,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4072,7 +4073,9 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4123,18 +4126,22 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4151,25 +4158,24 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4216,6 +4222,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4223,14 +4230,12 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ set_sseu_info(&sseu, info->sseu.max_slices, info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 27021a7546a2..a4525cb5fd28 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -321,7 +321,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = dev_priv->drm.pdev;
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -450,7 +450,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first subslice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index f51ff683dd2e..9da4118ad43a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -405,6 +405,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -420,12 +421,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 559cf0d0628e..1cc72beb86ee 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
#undef PRINT_FLAG
}
+#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
+
+static u8 *
+subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i;
+ u8 ss_offset = slice * sseu->ss_stride;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ memset(buf, 0, SS_STR_MAX_SIZE);
+
+ /*
+ * Print subslice information in reverse order to match
+ * userspace expectations.
+ */
+ for (i = 0; i < sseu->ss_stride; i++)
+ sprintf(&buf[i * 2], "%02x",
+ sseu->subslice_mask[ss_offset + sseu->ss_stride -
+ (i + 1)]);
+
+ return buf;
+}
+
static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
{
int s;
+ u8 buf[SS_STR_MAX_SIZE];
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%s\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
struct drm_printer *p)
{
int s, ss;
+ u8 buf[SS_STR_MAX_SIZE];
if (sseu->max_slices == 0) {
drm_printf(p, "Unavailable\n");
@@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = sseu_get_eus(sseu, s, ss);
@@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ set_sseu_info(sseu, 1, 4, 8);
+ else
+ set_sseu_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
+ sseu->subslice_mask[s * sseu->ss_stride] =
+ (ss_en >> ss_idx) & ss_en_mask;
for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+ if (sseu->subslice_mask[s * sseu->ss_stride] &
+ BIT(ss))
sseu_set_eus(sseu, s, ss, eu_en);
}
}
@@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ set_sseu_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -274,13 +292,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -289,7 +306,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -300,10 +317,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -335,9 +354,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -356,14 +374,16 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
@@ -435,9 +455,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -464,18 +482,21 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -514,6 +535,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -525,22 +547,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -557,9 +575,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ set_sseu_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 202b4b7a24f1..22c9787c9422 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -890,7 +890,7 @@ u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride]);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -966,6 +966,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -983,7 +984,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/intel_engine_types.h b/drivers/gpu/drm/i915/intel_engine_types.h
index d07a01b3ed0b..e48cfec80699 100644
--- a/drivers/gpu/drm/i915/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/intel_engine_types.h
@@ -530,20 +530,22 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
- (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? \
+ 1 : (sseu___)->slice_mask) & \
+ BIT(slice___)) \
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ ((IS_GEN(dev_priv__, 7) ? \
+ 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
+ subslice__ / BITS_PER_BYTE]) & \
+ BIT(subslice__ % BITS_PER_BYTE)) \
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ? (subslice_) + 1 : 0, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if(instdone_has_slice(dev_priv_, sseu_, slice) && \
+ instdone_has_subslice(dev_priv_, sseu_, slice_, subslice_)) \
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/intel_hangcheck.c b/drivers/gpu/drm/i915/intel_hangcheck.c
index 3d51ed1428d4..8d9504f083a6 100644
--- a/drivers/gpu/drm/i915/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/intel_hangcheck.c
@@ -50,6 +50,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/intel_sseu.h b/drivers/gpu/drm/i915/intel_sseu.h
index 0dfbed547da5..a659a827f640 100644
--- a/drivers/gpu/drm/i915/intel_sseu.h
+++ b/drivers/gpu/drm/i915/intel_sseu.h
@@ -14,10 +14,11 @@ struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -32,6 +33,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -62,6 +66,17 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline void set_sseu_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
{
unsigned int i, total = 0;
@@ -75,7 +90,32 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
static inline unsigned int
sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ unsigned int i, total = 0;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ total += hweight8(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+
+ return total;
+}
+
+static inline void sseu_copy_subslices(const struct sseu_dev_info *sseu,
+ int slice, u8 *to_mask,
+ const u8 *from_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
+}
+
+static inline void sseu_set_subslices(struct sseu_dev_info *sseu,
+ int slice, u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index b3cbed1ee1c9..e8ddd56905db 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u8 ss_mask = sseu->subslice_mask[slice * sseu->ss_stride];
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
--
2.21.0.5.gaeb582a983
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply related [flat|nested] 25+ messages in thread
* [PATCH 5/5] drm/i915: Expand subslice mask
2019-04-25 16:28 ` [PATCH 0/5] " Stuart Summers
@ 2019-04-25 16:29 ` Stuart Summers
0 siblings, 0 replies; 25+ messages in thread
From: Stuart Summers @ 2019-04-25 16:29 UTC (permalink / raw)
To: intel-gfx
Currently, the subslice_mask runtime parameter is stored as an
array of subslices per slice. Expand the subslice mask array to
better match what is presented to userspace through the
I915_QUERY_TOPOLOGY_INFO ioctl. The index into this array is
then calculated:
slice * subslice stride + subslice index / 8
v2: fix spacing in set_sseu_info args
use set_sseu_info to initialize sseu data when building
device status in debugfs
rename variables in intel_engine_types.h to avoid checkpatch
warnings
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 43 ++++---
drivers/gpu/drm/i915/i915_drv.c | 6 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 5 +-
drivers/gpu/drm/i915/i915_query.c | 10 +-
drivers/gpu/drm/i915/intel_device_info.c | 139 +++++++++++++---------
drivers/gpu/drm/i915/intel_engine_cs.c | 6 +-
drivers/gpu/drm/i915/intel_engine_types.h | 32 ++---
drivers/gpu/drm/i915/intel_hangcheck.c | 3 +-
drivers/gpu/drm/i915/intel_sseu.h | 44 ++++++-
drivers/gpu/drm/i915/intel_workarounds.c | 2 +-
10 files changed, 182 insertions(+), 108 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 19746249d57b..9bd304b83de3 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1250,6 +1250,7 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
struct seq_file *m,
struct intel_instdone *instdone)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
int slice;
int subslice;
@@ -1265,11 +1266,11 @@ static void i915_instdone_info(struct drm_i915_private *dev_priv,
if (INTEL_GEN(dev_priv) <= 6)
return;
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tSAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->sampler[slice][subslice]);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice)
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice)
seq_printf(m, "\t\tROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice, instdone->row[slice][subslice]);
}
@@ -4072,7 +4073,9 @@ static void gen10_sseu_device_status(struct drm_i915_private *dev_priv,
continue;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = info->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
@@ -4123,18 +4126,22 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
sseu->slice_mask |= BIT(s);
if (IS_GEN9_BC(dev_priv))
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
for (ss = 0; ss < info->sseu.max_subslices; ss++) {
unsigned int eu_cnt;
+ u8 ss_idx = s * info->sseu.ss_stride +
+ ss / BITS_PER_BYTE;
if (IS_GEN9_LP(dev_priv)) {
if (!(s_reg[s] & (GEN9_PGCTL_SS_ACK(ss))))
/* skip disabled subslice */
continue;
- sseu->subslice_mask[s] |= BIT(ss);
+ sseu->subslice_mask[ss_idx] |=
+ BIT(ss % BITS_PER_BYTE);
}
eu_cnt = 2 * hweight32(eu_reg[2*s + ss/2] &
@@ -4151,25 +4158,24 @@ static void gen9_sseu_device_status(struct drm_i915_private *dev_priv,
static void broadwell_sseu_device_status(struct drm_i915_private *dev_priv,
struct sseu_dev_info *sseu)
{
+ struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
u32 slice_info = I915_READ(GEN8_GT_SLICE_INFO);
int s;
sseu->slice_mask = slice_info & GEN8_LSLICESTAT_MASK;
if (sseu->slice_mask) {
- sseu->eu_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.eu_per_subslice;
- for (s = 0; s < fls(sseu->slice_mask); s++) {
- sseu->subslice_mask[s] =
- RUNTIME_INFO(dev_priv)->sseu.subslice_mask[s];
- }
+ sseu->eu_per_subslice = info->sseu.eu_per_subslice;
+ for (s = 0; s < fls(sseu->slice_mask); s++)
+ sseu_copy_subslices(&info->sseu, s,
+ sseu->subslice_mask,
+ info->sseu.subslice_mask);
sseu->eu_total = sseu->eu_per_subslice *
sseu_subslice_total(sseu);
/* subtract fused off EU(s) from enabled slice(s) */
for (s = 0; s < fls(sseu->slice_mask); s++) {
- u8 subslice_7eu =
- RUNTIME_INFO(dev_priv)->sseu.subslice_7eu[s];
+ u8 subslice_7eu = info->sseu.subslice_7eu[s];
sseu->eu_total -= hweight8(subslice_7eu);
}
@@ -4216,6 +4222,7 @@ static void i915_print_sseu_info(struct seq_file *m, bool is_available_info,
static int i915_sseu_status(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ const struct intel_runtime_info *info = RUNTIME_INFO(dev_priv);
struct sseu_dev_info sseu;
intel_wakeref_t wakeref;
@@ -4223,14 +4230,12 @@ static int i915_sseu_status(struct seq_file *m, void *unused)
return -ENODEV;
seq_puts(m, "SSEU Device Info\n");
- i915_print_sseu_info(m, true, &RUNTIME_INFO(dev_priv)->sseu);
+ i915_print_sseu_info(m, true, &info->sseu);
seq_puts(m, "SSEU Device Status\n");
memset(&sseu, 0, sizeof(sseu));
- sseu.max_slices = RUNTIME_INFO(dev_priv)->sseu.max_slices;
- sseu.max_subslices = RUNTIME_INFO(dev_priv)->sseu.max_subslices;
- sseu.max_eus_per_subslice =
- RUNTIME_INFO(dev_priv)->sseu.max_eus_per_subslice;
+ set_sseu_info(&sseu, info->sseu.max_slices, info->sseu.max_subslices,
+ info->sseu.max_eus_per_subslice);
with_intel_runtime_pm(dev_priv, wakeref) {
if (IS_CHERRYVIEW(dev_priv))
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 27021a7546a2..a4525cb5fd28 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -321,7 +321,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
struct pci_dev *pdev = dev_priv->drm.pdev;
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
drm_i915_getparam_t *param = data;
- int value;
+ int value = 0;
switch (param->param) {
case I915_PARAM_IRQ_ACTIVE:
@@ -450,7 +450,9 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
return -ENODEV;
break;
case I915_PARAM_SUBSLICE_MASK:
- value = sseu->subslice_mask[0];
+ /* Only copy bits from the first subslice */
+ memcpy(&value, sseu->subslice_mask,
+ min(sseu->ss_stride, (u8)sizeof(value)));
if (!value)
return -ENODEV;
break;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index f51ff683dd2e..9da4118ad43a 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -405,6 +405,7 @@ static void print_error_buffers(struct drm_i915_error_state_buf *m,
static void error_print_instdone(struct drm_i915_error_state_buf *m,
const struct drm_i915_error_engine *ee)
{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(m->i915)->sseu;
int slice;
int subslice;
@@ -420,12 +421,12 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
if (INTEL_GEN(m->i915) <= 6)
return;
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.sampler[slice][subslice]);
- for_each_instdone_slice_subslice(m->i915, slice, subslice)
+ for_each_instdone_slice_subslice(m->i915, sseu, slice, subslice)
err_printf(m, " ROW_INSTDONE[%d][%d]: 0x%08x\n",
slice, subslice,
ee->instdone.row[slice][subslice]);
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 7c1708c22811..000dcb145ce0 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -37,8 +37,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct drm_i915_query_topology_info topo;
u32 slice_length, subslice_length, eu_length, total_length;
- u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
- u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
int ret;
if (query_item->flags != 0)
@@ -50,8 +48,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask));
slice_length = sizeof(sseu->slice_mask);
- subslice_length = sseu->max_slices * subslice_stride;
- eu_length = sseu->max_slices * sseu->max_subslices * eu_stride;
+ subslice_length = sseu->max_slices * sseu->ss_stride;
+ eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride;
total_length = sizeof(topo) + slice_length + subslice_length +
eu_length;
@@ -69,9 +67,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv,
topo.max_eus_per_subslice = sseu->max_eus_per_subslice;
topo.subslice_offset = slice_length;
- topo.subslice_stride = subslice_stride;
+ topo.subslice_stride = sseu->ss_stride;
topo.eu_offset = slice_length + subslice_length;
- topo.eu_stride = eu_stride;
+ topo.eu_stride = sseu->eu_stride;
if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr),
&topo, sizeof(topo)))
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index 559cf0d0628e..1cc72beb86ee 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -84,17 +84,42 @@ void intel_device_info_dump_flags(const struct intel_device_info *info,
#undef PRINT_FLAG
}
+#define SS_STR_MAX_SIZE (GEN_MAX_SUBSLICE_STRIDE * 2)
+
+static u8 *
+subslice_per_slice_str(u8 *buf, const struct sseu_dev_info *sseu, u8 slice)
+{
+ int i;
+ u8 ss_offset = slice * sseu->ss_stride;
+
+ GEM_BUG_ON(slice >= sseu->max_slices);
+
+ memset(buf, 0, SS_STR_MAX_SIZE);
+
+ /*
+ * Print subslice information in reverse order to match
+ * userspace expectations.
+ */
+ for (i = 0; i < sseu->ss_stride; i++)
+ sprintf(&buf[i * 2], "%02x",
+ sseu->subslice_mask[ss_offset + sseu->ss_stride -
+ (i + 1)]);
+
+ return buf;
+}
+
static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
{
int s;
+ u8 buf[SS_STR_MAX_SIZE];
drm_printf(p, "slice total: %u, mask=%04x\n",
hweight8(sseu->slice_mask), sseu->slice_mask);
drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
+ drm_printf(p, "slice%d: %u subslices, mask=%s\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
}
drm_printf(p, "EU total: %u\n", sseu->eu_total);
drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
@@ -118,6 +143,7 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
struct drm_printer *p)
{
int s, ss;
+ u8 buf[SS_STR_MAX_SIZE];
if (sseu->max_slices == 0) {
drm_printf(p, "Unavailable\n");
@@ -125,9 +151,9 @@ void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
}
for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
+ drm_printf(p, "slice%d: %u subslice(s) (0x%s):\n",
s, sseu_subslices_per_slice(sseu, s),
- sseu->subslice_mask[s]);
+ subslice_per_slice_str(buf, sseu, s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
u16 enabled_eus = sseu_get_eus(sseu, s, ss);
@@ -156,15 +182,10 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
u8 eu_en;
int s;
- if (IS_ELKHARTLAKE(dev_priv)) {
- sseu->max_slices = 1;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
- } else {
- sseu->max_slices = 1;
- sseu->max_subslices = 8;
- sseu->max_eus_per_subslice = 8;
- }
+ if (IS_ELKHARTLAKE(dev_priv))
+ set_sseu_info(sseu, 1, 4, 8);
+ else
+ set_sseu_info(sseu, 1, 8, 8);
s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
@@ -177,9 +198,11 @@ static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
int ss;
sseu->slice_mask |= BIT(s);
- sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
+ sseu->subslice_mask[s * sseu->ss_stride] =
+ (ss_en >> ss_idx) & ss_en_mask;
for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu->subslice_mask[s] & BIT(ss))
+ if (sseu->subslice_mask[s * sseu->ss_stride] &
+ BIT(ss))
sseu_set_eus(sseu, s, ss, eu_en);
}
}
@@ -201,23 +224,10 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
const int eu_mask = 0xff;
u32 subslice_mask, eu_en;
+ set_sseu_info(sseu, 6, 4, 8);
+
sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
GEN10_F2_S_ENA_SHIFT;
- sseu->max_slices = 6;
- sseu->max_subslices = 4;
- sseu->max_eus_per_subslice = 8;
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- sseu->subslice_mask[0] = subslice_mask;
- for (s = 1; s < sseu->max_slices; s++)
- sseu->subslice_mask[s] = subslice_mask & 0x3;
/* Slice0 */
eu_en = ~I915_READ(GEN8_EU_DISABLE0);
@@ -242,14 +252,22 @@ static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
eu_en = ~I915_READ(GEN10_EU_DISABLE3);
sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
- /* Do a second pass where we mark the subslices disabled if all their
- * eus are off.
- */
+ subslice_mask = (1 << 4) - 1;
+ subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
+ GEN10_F2_SS_DIS_SHIFT);
+
for (s = 0; s < sseu->max_slices; s++) {
for (ss = 0; ss < sseu->max_subslices; ss++) {
if (sseu_get_eus(sseu, s, ss) == 0)
- sseu->subslice_mask[s] &= ~BIT(ss);
+ subslice_mask &= ~BIT(ss);
}
+
+ /*
+ * Slice0 can have up to 3 subslices, but there are only 2 in
+ * slice1/2.
+ */
+ sseu_set_subslices(sseu, s, s == 0 ? subslice_mask :
+ subslice_mask & 0x3);
}
sseu->eu_total = compute_eu_total(sseu);
@@ -274,13 +292,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
{
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse;
+ u8 subslice_mask;
fuse = I915_READ(CHV_FUSE_GT);
sseu->slice_mask = BIT(0);
- sseu->max_slices = 1;
- sseu->max_subslices = 2;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 1, 2, 8);
if (!(fuse & CHV_FGT_DISABLE_SS0)) {
u8 disabled_mask =
@@ -289,7 +306,7 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(0);
+ subslice_mask |= BIT(0);
sseu_set_eus(sseu, 0, 0, ~disabled_mask);
}
@@ -300,10 +317,12 @@ static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
(((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
- sseu->subslice_mask[0] |= BIT(1);
+ subslice_mask |= BIT(1);
sseu_set_eus(sseu, 0, 1, ~disabled_mask);
}
+ sseu_set_subslices(sseu, 0, subslice_mask);
+
sseu->eu_total = compute_eu_total(sseu);
/*
@@ -335,9 +354,8 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
/* BXT has a single slice and at most 3 subslices. */
- sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
- sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
+ IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -356,14 +374,16 @@ static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
eu_disable = I915_READ(GEN9_EU_DISABLE(s));
for (ss = 0; ss < sseu->max_subslices; ss++) {
int eu_per_ss;
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
@@ -435,9 +455,7 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
fuse2 = I915_READ(GEN8_FUSE2);
sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- sseu->max_slices = 3;
- sseu->max_subslices = 3;
- sseu->max_eus_per_subslice = 8;
+ set_sseu_info(sseu, 3, 3, 8);
/*
* The subslice disable field is global, i.e. it applies
@@ -464,18 +482,21 @@ static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
/* skip disabled slice */
continue;
- sseu->subslice_mask[s] = subslice_mask;
+ sseu_set_subslices(sseu, s, subslice_mask);
for (ss = 0; ss < sseu->max_subslices; ss++) {
u8 eu_disabled_mask;
+ u8 ss_idx = s * sseu->ss_stride + ss / BITS_PER_BYTE;
u32 n_disabled;
- if (!(sseu->subslice_mask[s] & BIT(ss)))
+ if (!(sseu->subslice_mask[ss_idx] &
+ BIT(ss % BITS_PER_BYTE)))
/* skip disabled subslice */
continue;
eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+ eu_disable[s] >>
+ (ss * sseu->max_eus_per_subslice);
sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
@@ -514,6 +535,7 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 fuse1;
int s, ss;
+ u32 subslice_mask;
/*
* There isn't a register to tell us how many slices/subslices. We
@@ -525,22 +547,18 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
/* fall through */
case 1:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0);
+ subslice_mask = BIT(0);
break;
case 2:
sseu->slice_mask = BIT(0);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
case 3:
sseu->slice_mask = BIT(0) | BIT(1);
- sseu->subslice_mask[0] = BIT(0) | BIT(1);
- sseu->subslice_mask[1] = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
break;
}
- sseu->max_slices = hweight8(sseu->slice_mask);
- sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
-
fuse1 = I915_READ(HSW_PAVP_FUSE1);
switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
default:
@@ -557,9 +575,14 @@ static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
sseu->eu_per_subslice = 6;
break;
}
- sseu->max_eus_per_subslice = sseu->eu_per_subslice;
+
+ set_sseu_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
for (s = 0; s < sseu->max_slices; s++) {
+ sseu_set_subslices(sseu, s, subslice_mask);
+
for (ss = 0; ss < sseu->max_subslices; ss++) {
sseu_set_eus(sseu, s, ss,
(1UL << sseu->eu_per_subslice) - 1);
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 202b4b7a24f1..22c9787c9422 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -890,7 +890,7 @@ u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv)
const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
u32 mcr_s_ss_select;
u32 slice = fls(sseu->slice_mask);
- u32 subslice = fls(sseu->subslice_mask[slice]);
+ u32 subslice = fls(sseu->subslice_mask[slice * sseu->ss_stride]);
if (IS_GEN(dev_priv, 10))
mcr_s_ss_select = GEN8_MCR_SLICE(slice) |
@@ -966,6 +966,7 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
struct intel_instdone *instdone)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_uncore *uncore = engine->uncore;
u32 mmio_base = engine->mmio_base;
int slice;
@@ -983,7 +984,8 @@ void intel_engine_get_instdone(struct intel_engine_cs *engine,
instdone->slice_common =
intel_uncore_read(uncore, GEN7_SC_INSTDONE);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice,
+ subslice) {
instdone->sampler[slice][subslice] =
read_subslice_reg(dev_priv, slice, subslice,
GEN7_SAMPLER_INSTDONE);
diff --git a/drivers/gpu/drm/i915/intel_engine_types.h b/drivers/gpu/drm/i915/intel_engine_types.h
index d07a01b3ed0b..e48cfec80699 100644
--- a/drivers/gpu/drm/i915/intel_engine_types.h
+++ b/drivers/gpu/drm/i915/intel_engine_types.h
@@ -530,20 +530,22 @@ intel_engine_needs_breadcrumb_tasklet(const struct intel_engine_cs *engine)
return engine->flags & I915_ENGINE_NEEDS_BREADCRUMB_TASKLET;
}
-#define instdone_slice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.slice_mask)
-
-#define instdone_subslice_mask(dev_priv__) \
- (IS_GEN(dev_priv__, 7) ? \
- 1 : RUNTIME_INFO(dev_priv__)->sseu.subslice_mask[0])
-
-#define for_each_instdone_slice_subslice(dev_priv__, slice__, subslice__) \
- for ((slice__) = 0, (subslice__) = 0; \
- (slice__) < I915_MAX_SLICES; \
- (subslice__) = ((subslice__) + 1) < I915_MAX_SUBSLICES ? (subslice__) + 1 : 0, \
- (slice__) += ((subslice__) == 0)) \
- for_each_if((BIT(slice__) & instdone_slice_mask(dev_priv__)) && \
- (BIT(subslice__) & instdone_subslice_mask(dev_priv__)))
+#define instdone_has_slice(dev_priv___, sseu___, slice___) \
+ ((IS_GEN(dev_priv___, 7) ? \
+ 1 : (sseu___)->slice_mask) & \
+ BIT(slice___)) \
+
+#define instdone_has_subslice(dev_priv__, sseu__, slice__, subslice__) \
+ ((IS_GEN(dev_priv__, 7) ? \
+ 1 : (sseu__)->subslice_mask[slice__ * (sseu__)->ss_stride + \
+ subslice__ / BITS_PER_BYTE]) & \
+ BIT(subslice__ % BITS_PER_BYTE)) \
+
+#define for_each_instdone_slice_subslice(dev_priv_, sseu_, slice_, subslice_) \
+ for ((slice_) = 0, (subslice_) = 0; (slice_) < I915_MAX_SLICES; \
+ (subslice_) = ((subslice_) + 1) < I915_MAX_SUBSLICES ? (subslice_) + 1 : 0, \
+ (slice_) += ((subslice_) == 0)) \
+ for_each_if(instdone_has_slice(dev_priv_, sseu_, slice) && \
+ instdone_has_subslice(dev_priv_, sseu_, slice_, subslice_)) \
#endif /* __INTEL_ENGINE_TYPES_H__ */
diff --git a/drivers/gpu/drm/i915/intel_hangcheck.c b/drivers/gpu/drm/i915/intel_hangcheck.c
index 3d51ed1428d4..8d9504f083a6 100644
--- a/drivers/gpu/drm/i915/intel_hangcheck.c
+++ b/drivers/gpu/drm/i915/intel_hangcheck.c
@@ -50,6 +50,7 @@ static bool instdone_unchanged(u32 current_instdone, u32 *old_instdone)
static bool subunits_stuck(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
struct intel_instdone instdone;
struct intel_instdone *accu_instdone = &engine->hangcheck.instdone;
bool stuck;
@@ -71,7 +72,7 @@ static bool subunits_stuck(struct intel_engine_cs *engine)
stuck &= instdone_unchanged(instdone.slice_common,
&accu_instdone->slice_common);
- for_each_instdone_slice_subslice(dev_priv, slice, subslice) {
+ for_each_instdone_slice_subslice(dev_priv, sseu, slice, subslice) {
stuck &= instdone_unchanged(instdone.sampler[slice][subslice],
&accu_instdone->sampler[slice][subslice]);
stuck &= instdone_unchanged(instdone.row[slice][subslice],
diff --git a/drivers/gpu/drm/i915/intel_sseu.h b/drivers/gpu/drm/i915/intel_sseu.h
index 0dfbed547da5..a659a827f640 100644
--- a/drivers/gpu/drm/i915/intel_sseu.h
+++ b/drivers/gpu/drm/i915/intel_sseu.h
@@ -14,10 +14,11 @@ struct drm_i915_private;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(bits) DIV_ROUND_UP(bits, BITS_PER_BYTE)
+#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
struct sseu_dev_info {
u8 slice_mask;
- u8 subslice_mask[GEN_MAX_SLICES];
+ u8 subslice_mask[GEN_MAX_SLICES * GEN_MAX_SUBSLICE_STRIDE];
u16 eu_total;
u8 eu_per_subslice;
u8 min_eu_in_pool;
@@ -32,6 +33,9 @@ struct sseu_dev_info {
u8 max_subslices;
u8 max_eus_per_subslice;
+ u8 ss_stride;
+ u8 eu_stride;
+
/* We don't have more than 8 eus per subslice at the moment and as we
* store eus enabled using bits, no need to multiply by eus per
* subslice.
@@ -62,6 +66,17 @@ intel_sseu_from_device_info(const struct sseu_dev_info *sseu)
return value;
}
+static inline void set_sseu_info(struct sseu_dev_info *sseu, u8 max_slices,
+ u8 max_subslices, u8 max_eus_per_subslice)
+{
+ sseu->max_slices = max_slices;
+ sseu->max_subslices = max_subslices;
+ sseu->max_eus_per_subslice = max_eus_per_subslice;
+
+ sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
+ sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
+}
+
static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
{
unsigned int i, total = 0;
@@ -75,7 +90,32 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
static inline unsigned int
sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
{
- return hweight8(sseu->subslice_mask[slice]);
+ unsigned int i, total = 0;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ total += hweight8(sseu->subslice_mask[slice * sseu->ss_stride +
+ i]);
+
+ return total;
+}
+
+static inline void sseu_copy_subslices(const struct sseu_dev_info *sseu,
+ int slice, u8 *to_mask,
+ const u8 *from_mask)
+{
+ int offset = slice * sseu->ss_stride;
+
+ memcpy(&to_mask[offset], &from_mask[offset], sseu->ss_stride);
+}
+
+static inline void sseu_set_subslices(struct sseu_dev_info *sseu,
+ int slice, u32 ss_mask)
+{
+ int i, offset = slice * sseu->ss_stride;
+
+ for (i = 0; i < sseu->ss_stride; i++)
+ sseu->subslice_mask[offset + i] =
+ (ss_mask >> (BITS_PER_BYTE * i)) & 0xff;
}
static inline int sseu_eu_idx(const struct sseu_dev_info *sseu,
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index b3cbed1ee1c9..e8ddd56905db 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -771,7 +771,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
u32 slice = fls(sseu->slice_mask);
u32 fuse3 =
intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3);
- u8 ss_mask = sseu->subslice_mask[slice];
+ u8 ss_mask = sseu->subslice_mask[slice * sseu->ss_stride];
u8 enabled_mask = (ss_mask | ss_mask >>
GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK;
--
2.21.0.5.gaeb582a983
_______________________________________________
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^ permalink raw reply related [flat|nested] 25+ messages in thread
end of thread, other threads:[~2019-05-21 15:52 UTC | newest]
Thread overview: 25+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-03 21:30 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
2019-05-03 21:30 ` [PATCH 1/5] drm/i915: Use local variable for SSEU info in GETPARAM ioctl Stuart Summers
2019-05-03 21:30 ` [PATCH 2/5] drm/i915: Add macro for SSEU stride calculation Stuart Summers
2019-05-03 21:30 ` [PATCH 3/5] drm/i915: Move calculation of subslices per slice to new function Stuart Summers
2019-05-03 21:30 ` [PATCH 4/5] drm/i915: Refactor sseu helper functions Stuart Summers
2019-05-07 18:12 ` Daniele Ceraolo Spurio
2019-05-07 18:21 ` Summers, Stuart
2019-05-03 21:30 ` [PATCH 5/5] drm/i915: Expand subslice mask Stuart Summers
2019-05-07 19:00 ` Daniele Ceraolo Spurio
2019-05-07 20:48 ` Summers, Stuart
2019-05-07 21:16 ` Daniele Ceraolo Spurio
2019-05-07 21:19 ` Summers, Stuart
2019-05-03 21:56 ` ✗ Fi.CI.CHECKPATCH: warning for Refactor to expand subslice mask (rev8) Patchwork
2019-05-03 21:59 ` ✗ Fi.CI.SPARSE: " Patchwork
2019-05-03 22:44 ` ✓ Fi.CI.BAT: success " Patchwork
2019-05-04 4:28 ` ✓ Fi.CI.IGT: " Patchwork
-- strict thread matches above, loose matches on Subject: below --
2019-05-13 20:56 [PATCH 0/5] Refactor to expand subslice mask Stuart Summers
2019-05-13 20:56 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
2019-05-16 22:40 ` Daniele Ceraolo Spurio
2019-05-21 15:52 ` Summers, Stuart
2019-04-29 15:51 [PATCH 0/5] Refactor to expand " Stuart Summers
2019-04-29 15:51 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
2019-04-30 9:03 ` Jani Nikula
2019-04-30 14:16 ` Summers, Stuart
2019-04-26 20:24 [PATCH 0/5] Refactor to expand " Stuart Summers
2019-04-26 20:24 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
2019-04-25 22:24 [PATCH 0/5] Refactor to expand " Stuart Summers
2019-04-25 22:24 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
2019-04-19 0:00 [PATCH 0/4] Refactor to expand " Stuart Summers
2019-04-25 16:28 ` [PATCH 0/5] " Stuart Summers
2019-04-25 16:29 ` [PATCH 5/5] drm/i915: Expand " Stuart Summers
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