* [PATCH v5 1/2] drm/i915: Introduce INTEL_GEN_MASK
@ 2017-09-11 9:59 Joonas Lahtinen
2017-09-11 9:59 ` [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl Joonas Lahtinen
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Joonas Lahtinen @ 2017-09-11 9:59 UTC (permalink / raw)
To: Intel graphics driver community testing & development
Cc: Jani Nikula, Rodrigo Vivi
Split INTEL_GEN_MASK out of IS_GEN macro, and make it usable
within static declarations (unlike combound statements).
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.h | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 63ca2ffcafef..c3f9d7d7b146 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2873,23 +2873,21 @@ intel_info(const struct drm_i915_private *dev_priv)
#define INTEL_REVID(dev_priv) ((dev_priv)->drm.pdev->revision)
#define GEN_FOREVER (0)
+
+#define INTEL_GEN_MASK(s, e) ( \
+ BUILD_BUG_ON_ZERO(!__builtin_constant_p(s)) + \
+ BUILD_BUG_ON_ZERO(!__builtin_constant_p(e)) + \
+ GENMASK((e) != GEN_FOREVER ? (e) - 1 : BITS_PER_LONG - 1, \
+ (s) != GEN_FOREVER ? (s) - 1 : 0) \
+)
+
/*
* Returns true if Gen is in inclusive range [Start, End].
*
* Use GEN_FOREVER for unbound start and or end.
*/
-#define IS_GEN(dev_priv, s, e) ({ \
- unsigned int __s = (s), __e = (e); \
- BUILD_BUG_ON(!__builtin_constant_p(s)); \
- BUILD_BUG_ON(!__builtin_constant_p(e)); \
- if ((__s) != GEN_FOREVER) \
- __s = (s) - 1; \
- if ((__e) == GEN_FOREVER) \
- __e = BITS_PER_LONG - 1; \
- else \
- __e = (e) - 1; \
- !!((dev_priv)->info.gen_mask & GENMASK((__e), (__s))); \
-})
+#define IS_GEN(dev_priv, s, e) \
+ (!!((dev_priv)->info.gen_mask & INTEL_GEN_MASK((s), (e))))
/*
* Return true if revision is in range [since,until] inclusive.
--
2.13.5
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^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl
2017-09-11 9:59 [PATCH v5 1/2] drm/i915: Introduce INTEL_GEN_MASK Joonas Lahtinen
@ 2017-09-11 9:59 ` Joonas Lahtinen
2017-09-11 10:47 ` Chris Wilson
2017-09-11 10:26 ` ✓ Fi.CI.BAT: success for series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK Patchwork
2017-09-11 13:35 ` ✓ Fi.CI.IGT: " Patchwork
2 siblings, 1 reply; 5+ messages in thread
From: Joonas Lahtinen @ 2017-09-11 9:59 UTC (permalink / raw)
To: Intel graphics driver community testing & development
Cc: Jani Nikula, Rodrigo Vivi
Convert to use the freshly available made INTEL_GEN_MASK for easier
grepping and improve function readability and clarify the UABI
documentation.
No functional changes.
v2:
- Lift GEM_BUG_ONs and use is_power_of_2 (Chris)
- Retain -EINVAL on bad flags behavior (Chris)
v3:
- Extract flags with 'entry->size - 1' (Chris)
v4:
- Add GEM_BUG_ON on for flags vs entry offset (Chris)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/intel_uncore.c | 95 +++++++++++++++++--------------------
include/uapi/drm/i915_drm.h | 6 ++-
2 files changed, 48 insertions(+), 53 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
index 1b38eb94d461..92420e0efa04 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -1292,72 +1292,65 @@ void intel_uncore_fini(struct drm_i915_private *dev_priv)
intel_uncore_forcewake_reset(dev_priv, false);
}
-#define GEN_RANGE(l, h) GENMASK((h) - 1, (l) - 1)
-
-static const struct register_whitelist {
- i915_reg_t offset_ldw, offset_udw;
- uint32_t size;
- /* supported gens, 0x10 for 4, 0x30 for 4 and 5, etc. */
- uint32_t gen_bitmask;
-} whitelist[] = {
- { .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
- .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
- .size = 8, .gen_bitmask = GEN_RANGE(4, 10) },
-};
+static const struct reg_whitelist {
+ i915_reg_t offset_ldw;
+ i915_reg_t offset_udw;
+ unsigned long gen_mask;
+ u8 size;
+} reg_read_whitelist[] = {{
+ .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
+ .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
+ .gen_mask = INTEL_GEN_MASK(4, 10),
+ .size = 8
+}};
int i915_reg_read_ioctl(struct drm_device *dev,
void *data, struct drm_file *file)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_reg_read *reg = data;
- struct register_whitelist const *entry = whitelist;
- unsigned size;
- i915_reg_t offset_ldw, offset_udw;
- int i, ret = 0;
-
- for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
- if (i915_mmio_reg_offset(entry->offset_ldw) == (reg->offset & -entry->size) &&
- (INTEL_INFO(dev_priv)->gen_mask & entry->gen_bitmask))
+ struct reg_whitelist const *entry;
+ unsigned flags;
+ int remain;
+ int ret = 0;
+
+ entry = reg_read_whitelist;
+ remain = ARRAY_SIZE(reg_read_whitelist);
+ while (remain) {
+ u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
+
+ GEM_BUG_ON(!is_power_of_2(entry->size));
+ GEM_BUG_ON(entry->size > 8);
+ GEM_BUG_ON(entry_offset & (entry->size - 1));
+
+ if (INTEL_INFO(dev_priv)->gen_mask & entry->gen_mask &&
+ entry_offset == (reg->offset & -entry->size))
break;
+ entry++;
+ remain--;
}
- if (i == ARRAY_SIZE(whitelist))
+ if (!remain)
return -EINVAL;
- /* We use the low bits to encode extra flags as the register should
- * be naturally aligned (and those that are not so aligned merely
- * limit the available flags for that register).
- */
- offset_ldw = entry->offset_ldw;
- offset_udw = entry->offset_udw;
- size = entry->size;
- size |= reg->offset ^ i915_mmio_reg_offset(offset_ldw);
+ flags = reg->offset & (entry->size - 1);
intel_runtime_pm_get(dev_priv);
-
- switch (size) {
- case 8 | 1:
- reg->val = I915_READ64_2x32(offset_ldw, offset_udw);
- break;
- case 8:
- reg->val = I915_READ64(offset_ldw);
- break;
- case 4:
- reg->val = I915_READ(offset_ldw);
- break;
- case 2:
- reg->val = I915_READ16(offset_ldw);
- break;
- case 1:
- reg->val = I915_READ8(offset_ldw);
- break;
- default:
+ if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
+ reg->val = I915_READ64_2x32(entry->offset_ldw,
+ entry->offset_udw);
+ else if (entry->size == 8 && flags == 0)
+ reg->val = I915_READ64(entry->offset_ldw);
+ else if (entry->size == 4 && flags == 0)
+ reg->val = I915_READ(entry->offset_ldw);
+ else if (entry->size == 2 && flags == 0)
+ reg->val = I915_READ16(entry->offset_ldw);
+ else if (entry->size == 1 && flags == 0)
+ reg->val = I915_READ8(entry->offset_ldw);
+ else
ret = -EINVAL;
- goto out;
- }
-
-out:
intel_runtime_pm_put(dev_priv);
+
return ret;
}
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index d8d10d932759..b4505d55990d 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -1308,14 +1308,16 @@ struct drm_i915_reg_read {
* be specified
*/
__u64 offset;
+#define I915_REG_READ_8B_WA BIT(0)
+
__u64 val; /* Return value */
};
/* Known registers:
*
* Render engine timestamp - 0x2358 + 64bit - gen7+
* - Note this register returns an invalid value if using the default
- * single instruction 8byte read, in order to workaround that use
- * offset (0x2538 | 1) instead.
+ * single instruction 8byte read, in order to workaround that pass
+ * flag I915_REG_READ_8B_WA in offset field.
*
*/
--
2.13.5
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^ permalink raw reply related [flat|nested] 5+ messages in thread
* ✓ Fi.CI.BAT: success for series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK
2017-09-11 9:59 [PATCH v5 1/2] drm/i915: Introduce INTEL_GEN_MASK Joonas Lahtinen
2017-09-11 9:59 ` [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl Joonas Lahtinen
@ 2017-09-11 10:26 ` Patchwork
2017-09-11 13:35 ` ✓ Fi.CI.IGT: " Patchwork
2 siblings, 0 replies; 5+ messages in thread
From: Patchwork @ 2017-09-11 10:26 UTC (permalink / raw)
To: Joonas Lahtinen; +Cc: intel-gfx
== Series Details ==
Series: series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK
URL : https://patchwork.freedesktop.org/series/30113/
State : success
== Summary ==
Series 30113v1 series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK
https://patchwork.freedesktop.org/api/1.0/series/30113/revisions/1/mbox/
Test chamelium:
Subgroup dp-crc-fast:
pass -> FAIL (fi-kbl-7500u) fdo#102514
Test kms_cursor_legacy:
Subgroup basic-busy-flip-before-cursor-legacy:
pass -> FAIL (fi-snb-2600) fdo#100215
Test kms_flip:
Subgroup basic-flip-vs-modeset:
pass -> SKIP (fi-skl-x1585l) fdo#101781
Test kms_frontbuffer_tracking:
Subgroup basic:
pass -> INCOMPLETE (fi-bsw-n3050) fdo#101707
fdo#102514 https://bugs.freedesktop.org/show_bug.cgi?id=102514
fdo#100215 https://bugs.freedesktop.org/show_bug.cgi?id=100215
fdo#101781 https://bugs.freedesktop.org/show_bug.cgi?id=101781
fdo#101707 https://bugs.freedesktop.org/show_bug.cgi?id=101707
fi-bdw-5557u total:289 pass:268 dwarn:0 dfail:0 fail:0 skip:21 time:444s
fi-bdw-gvtdvm total:289 pass:265 dwarn:0 dfail:0 fail:0 skip:24 time:455s
fi-blb-e6850 total:289 pass:224 dwarn:1 dfail:0 fail:0 skip:64 time:376s
fi-bsw-n3050 total:225 pass:195 dwarn:0 dfail:0 fail:0 skip:29
fi-bwr-2160 total:289 pass:184 dwarn:0 dfail:0 fail:0 skip:105 time:271s
fi-bxt-j4205 total:289 pass:260 dwarn:0 dfail:0 fail:0 skip:29 time:504s
fi-byt-j1900 total:289 pass:254 dwarn:1 dfail:0 fail:0 skip:34 time:500s
fi-byt-n2820 total:289 pass:250 dwarn:1 dfail:0 fail:0 skip:38 time:485s
fi-cfl-s total:289 pass:250 dwarn:4 dfail:0 fail:0 skip:35 time:448s
fi-elk-e7500 total:289 pass:230 dwarn:0 dfail:0 fail:0 skip:59 time:453s
fi-glk-2a total:289 pass:260 dwarn:0 dfail:0 fail:0 skip:29 time:594s
fi-hsw-4770 total:289 pass:263 dwarn:0 dfail:0 fail:0 skip:26 time:426s
fi-hsw-4770r total:289 pass:263 dwarn:0 dfail:0 fail:0 skip:26 time:410s
fi-ilk-650 total:289 pass:229 dwarn:0 dfail:0 fail:0 skip:60 time:434s
fi-ivb-3520m total:289 pass:261 dwarn:0 dfail:0 fail:0 skip:28 time:490s
fi-ivb-3770 total:289 pass:261 dwarn:0 dfail:0 fail:0 skip:28 time:464s
fi-kbl-7500u total:289 pass:263 dwarn:1 dfail:0 fail:1 skip:24 time:480s
fi-kbl-7560u total:289 pass:270 dwarn:0 dfail:0 fail:0 skip:19 time:582s
fi-kbl-r total:289 pass:262 dwarn:0 dfail:0 fail:0 skip:27 time:587s
fi-pnv-d510 total:289 pass:223 dwarn:1 dfail:0 fail:0 skip:65 time:560s
fi-skl-6260u total:289 pass:269 dwarn:0 dfail:0 fail:0 skip:20 time:465s
fi-skl-6700k total:289 pass:265 dwarn:0 dfail:0 fail:0 skip:24 time:519s
fi-skl-6770hq total:289 pass:269 dwarn:0 dfail:0 fail:0 skip:20 time:499s
fi-skl-gvtdvm total:289 pass:266 dwarn:0 dfail:0 fail:0 skip:23 time:461s
fi-skl-x1585l total:289 pass:268 dwarn:0 dfail:0 fail:0 skip:21 time:487s
fi-snb-2520m total:289 pass:251 dwarn:0 dfail:0 fail:0 skip:38 time:572s
fi-snb-2600 total:289 pass:249 dwarn:0 dfail:0 fail:1 skip:39 time:428s
9ef5732ddf6924e98a5c5d034a3535cff14f72bf drm-tip: 2017y-09m-10d-21h-59m-53s UTC integration manifest
889533e10397 drm/i915: Simplify i915_reg_read_ioctl
1fc08e72da29 drm/i915: Introduce INTEL_GEN_MASK
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_5638/
_______________________________________________
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl
2017-09-11 9:59 ` [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl Joonas Lahtinen
@ 2017-09-11 10:47 ` Chris Wilson
0 siblings, 0 replies; 5+ messages in thread
From: Chris Wilson @ 2017-09-11 10:47 UTC (permalink / raw)
To: Joonas Lahtinen,
Intel graphics driver community testing & development
Cc: Jani Nikula, Rodrigo Vivi
Quoting Joonas Lahtinen (2017-09-11 10:59:01)
> Convert to use the freshly available made INTEL_GEN_MASK for easier
> grepping and improve function readability and clarify the UABI
> documentation.
>
> No functional changes.
>
> v2:
> - Lift GEM_BUG_ONs and use is_power_of_2 (Chris)
> - Retain -EINVAL on bad flags behavior (Chris)
>
> v3:
> - Extract flags with 'entry->size - 1' (Chris)
>
> v4:
> - Add GEM_BUG_ON on for flags vs entry offset (Chris)
>
> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
> ---
> drivers/gpu/drm/i915/intel_uncore.c | 95 +++++++++++++++++--------------------
> include/uapi/drm/i915_drm.h | 6 ++-
> 2 files changed, 48 insertions(+), 53 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c
> index 1b38eb94d461..92420e0efa04 100644
> --- a/drivers/gpu/drm/i915/intel_uncore.c
> +++ b/drivers/gpu/drm/i915/intel_uncore.c
> @@ -1292,72 +1292,65 @@ void intel_uncore_fini(struct drm_i915_private *dev_priv)
> intel_uncore_forcewake_reset(dev_priv, false);
> }
>
> -#define GEN_RANGE(l, h) GENMASK((h) - 1, (l) - 1)
> -
> -static const struct register_whitelist {
> - i915_reg_t offset_ldw, offset_udw;
> - uint32_t size;
> - /* supported gens, 0x10 for 4, 0x30 for 4 and 5, etc. */
> - uint32_t gen_bitmask;
> -} whitelist[] = {
> - { .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
> - .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
> - .size = 8, .gen_bitmask = GEN_RANGE(4, 10) },
> -};
> +static const struct reg_whitelist {
> + i915_reg_t offset_ldw;
> + i915_reg_t offset_udw;
> + unsigned long gen_mask;
> + u8 size;
> +} reg_read_whitelist[] = {{
> + .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
> + .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
> + .gen_mask = INTEL_GEN_MASK(4, 10),
> + .size = 8
> +}};
>
> int i915_reg_read_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file)
> {
> struct drm_i915_private *dev_priv = to_i915(dev);
> struct drm_i915_reg_read *reg = data;
> - struct register_whitelist const *entry = whitelist;
> - unsigned size;
> - i915_reg_t offset_ldw, offset_udw;
> - int i, ret = 0;
> -
> - for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) {
> - if (i915_mmio_reg_offset(entry->offset_ldw) == (reg->offset & -entry->size) &&
> - (INTEL_INFO(dev_priv)->gen_mask & entry->gen_bitmask))
> + struct reg_whitelist const *entry;
> + unsigned flags;
> + int remain;
> + int ret = 0;
> +
> + entry = reg_read_whitelist;
> + remain = ARRAY_SIZE(reg_read_whitelist);
> + while (remain) {
> + u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
> +
> + GEM_BUG_ON(!is_power_of_2(entry->size));
> + GEM_BUG_ON(entry->size > 8);
> + GEM_BUG_ON(entry_offset & (entry->size - 1));
> +
> + if (INTEL_INFO(dev_priv)->gen_mask & entry->gen_mask &&
> + entry_offset == (reg->offset & -entry->size))
> break;
> + entry++;
> + remain--;
> }
>
> - if (i == ARRAY_SIZE(whitelist))
> + if (!remain)
> return -EINVAL;
Thinking about the abi this would be nicer if it was ENOENT (continuing
our abuse) show that the caller can distinguish between a register not
existing. Bonus marks for -ENODEV.
e.g.:
ret = -ENOENT;
while (remain) {
if (entry_offset != (reg->offset & -entry->size))
continue;
if (!INTEL_INFO(dev_priv)->gen_mask & entry->gem_mask) {
ret = -ENODEV; /* known register, but bad gen */
continue;
}
ret = 0;
break;
}
if (ret)
return ret;
Just thinking how to write an agnostic igt, you would start with
igt_require(read_timestamp(fd) != -ENODEV);
so the test would naturally only run on the right hw. But there may be
some subtlety if registers are reassigned between gen...
-Chris
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^ permalink raw reply [flat|nested] 5+ messages in thread
* ✓ Fi.CI.IGT: success for series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK
2017-09-11 9:59 [PATCH v5 1/2] drm/i915: Introduce INTEL_GEN_MASK Joonas Lahtinen
2017-09-11 9:59 ` [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl Joonas Lahtinen
2017-09-11 10:26 ` ✓ Fi.CI.BAT: success for series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK Patchwork
@ 2017-09-11 13:35 ` Patchwork
2 siblings, 0 replies; 5+ messages in thread
From: Patchwork @ 2017-09-11 13:35 UTC (permalink / raw)
To: Joonas Lahtinen; +Cc: intel-gfx
== Series Details ==
Series: series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK
URL : https://patchwork.freedesktop.org/series/30113/
State : success
== Summary ==
Test perf:
Subgroup blocking:
pass -> FAIL (shard-hsw) fdo#102252
Test kms_setmode:
Subgroup basic:
pass -> FAIL (shard-hsw) fdo#99912
fdo#102252 https://bugs.freedesktop.org/show_bug.cgi?id=102252
fdo#99912 https://bugs.freedesktop.org/show_bug.cgi?id=99912
shard-hsw total:2302 pass:1237 dwarn:0 dfail:0 fail:13 skip:1052 time:9463s
== Logs ==
For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_5638/shards.html
_______________________________________________
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Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2017-09-11 13:35 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-09-11 9:59 [PATCH v5 1/2] drm/i915: Introduce INTEL_GEN_MASK Joonas Lahtinen
2017-09-11 9:59 ` [PATCH v5 2/2] drm/i915: Simplify i915_reg_read_ioctl Joonas Lahtinen
2017-09-11 10:47 ` Chris Wilson
2017-09-11 10:26 ` ✓ Fi.CI.BAT: success for series starting with [v5,1/2] drm/i915: Introduce INTEL_GEN_MASK Patchwork
2017-09-11 13:35 ` ✓ Fi.CI.IGT: " Patchwork
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