From: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
To: intel-gfx@lists.freedesktop.org,
Lionel G Landwerlin <lionel.g.landwerlin@intel.com>,
Ashutosh Dixit <ashutosh.dixit@intel.com>,
daniel@ffwll.ch
Cc: dri-devel@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH 2/8] drm/i915/gt: Refactor _wa_add to reuse wa_index and wa_list_grow
Date: Tue, 3 Aug 2021 13:13:43 -0700 [thread overview]
Message-ID: <20210803201349.31031-3-umesh.nerlige.ramappa@intel.com> (raw)
In-Reply-To: <20210803201349.31031-1-umesh.nerlige.ramappa@intel.com>
From: Chris Wilson <chris.p.wilson@intel.com>
Switch the search and grow code of the _wa_add to use _wa_index and
_wa_list_grow.
Signed-off-by: Chris Wilson <chris.p.wilson@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 124 +++++++++++---------
1 file changed, 71 insertions(+), 53 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 011cde0bc38d..94540cdb90c4 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -60,20 +60,19 @@ static void wa_init_start(struct i915_wa_list *wal, const char *name, const char
#define WA_LIST_CHUNK (1 << 4)
-static void wa_init_finish(struct i915_wa_list *wal)
+static void wa_trim(struct i915_wa_list *wal, gfp_t gfp)
{
+ struct i915_wa *list;
+
/* Trim unused entries. */
- if (!IS_ALIGNED(wal->count, WA_LIST_CHUNK)) {
- struct i915_wa *list = kmemdup(wal->list,
- wal->count * sizeof(*list),
- GFP_KERNEL);
-
- if (list) {
- kfree(wal->list);
- wal->list = list;
- }
- }
+ list = krealloc(wal->list, wal->count * sizeof(*list), gfp);
+ if (list)
+ wal->list = list;
+}
+static void wa_init_finish(struct i915_wa_list *wal)
+{
+ wa_trim(wal, GFP_KERNEL);
if (!wal->count)
return;
@@ -81,57 +80,60 @@ static void wa_init_finish(struct i915_wa_list *wal)
wal->wa_count, wal->name, wal->engine_name);
}
-static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
+static int wa_index(struct i915_wa_list *wal, i915_reg_t reg)
{
- unsigned int addr = i915_mmio_reg_offset(wa->reg);
- unsigned int start = 0, end = wal->count;
- const unsigned int grow = WA_LIST_CHUNK;
- struct i915_wa *wa_;
+ unsigned int addr = i915_mmio_reg_offset(reg);
+ int start = 0, end = wal->count;
- GEM_BUG_ON(!is_power_of_2(grow));
+ /* addr and wal->list[].reg, both include the R/W flags */
+ while (start < end) {
+ unsigned int mid = start + (end - start) / 2;
- if (IS_ALIGNED(wal->count, grow)) { /* Either uninitialized or full. */
- struct i915_wa *list;
+ if (i915_mmio_reg_offset(wal->list[mid].reg) < addr)
+ start = mid + 1;
+ else if (i915_mmio_reg_offset(wal->list[mid].reg) > addr)
+ end = mid;
+ else
+ return mid;
+ }
- list = kmalloc_array(ALIGN(wal->count + 1, grow), sizeof(*wa),
- GFP_KERNEL);
- if (!list) {
- DRM_ERROR("No space for workaround init!\n");
- return;
- }
+ return -ENOENT;
+}
- if (wal->list) {
- memcpy(list, wal->list, sizeof(*wa) * wal->count);
- kfree(wal->list);
- }
+static int wa_list_grow(struct i915_wa_list *wal, size_t count, gfp_t gfp)
+{
+ struct i915_wa *list;
- wal->list = list;
- }
+ list = krealloc(wal->list, count * sizeof(*list), gfp);
+ if (!list)
+ return -ENOMEM;
- while (start < end) {
- unsigned int mid = start + (end - start) / 2;
+ wal->list = list;
+ return 0;
+}
- if (i915_mmio_reg_offset(wal->list[mid].reg) < addr) {
- start = mid + 1;
- } else if (i915_mmio_reg_offset(wal->list[mid].reg) > addr) {
- end = mid;
- } else {
- wa_ = &wal->list[mid];
-
- if ((wa->clr | wa_->clr) && !(wa->clr & ~wa_->clr)) {
- DRM_ERROR("Discarding overwritten w/a for reg %04x (clear: %08x, set: %08x)\n",
- i915_mmio_reg_offset(wa_->reg),
- wa_->clr, wa_->set);
-
- wa_->set &= ~wa->clr;
- }
-
- wal->wa_count++;
- wa_->set |= wa->set;
- wa_->clr |= wa->clr;
- wa_->read |= wa->read;
- return;
+static void __wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
+{
+ struct i915_wa *wa_;
+ int index;
+
+ index = wa_index(wal, wa->reg);
+ if (index >= 0) {
+ wa_ = &wal->list[index];
+
+ if ((wa->clr | wa_->clr) && !(wa->clr & ~wa_->clr)) {
+ DRM_ERROR("Discarding overwritten w/a for reg %04x (clear: %08x, set: %08x)\n",
+ i915_mmio_reg_offset(wa_->reg),
+ wa_->clr, wa_->set);
+
+ wa_->set &= ~wa->clr;
}
+
+ wal->wa_count++;
+ wa_->set |= wa->set;
+ wa_->clr |= wa->clr;
+ wa_->read |= wa->read;
+ return;
}
wal->wa_count++;
@@ -149,6 +151,22 @@ static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
}
}
+static void _wa_add(struct i915_wa_list *wal, const struct i915_wa *wa)
+{
+ const unsigned int grow = WA_LIST_CHUNK;
+
+ GEM_BUG_ON(!is_power_of_2(grow));
+
+ if (IS_ALIGNED(wal->count, grow) && /* Either uninitialized or full. */
+ wa_list_grow(wal, ALIGN(wal->count + 1, grow), GFP_KERNEL)) {
+ DRM_ERROR("Unable to store w/a for reg %04x\n",
+ i915_mmio_reg_offset(wa->reg));
+ return;
+ }
+
+ __wa_add(wal, wa);
+}
+
static void wa_add(struct i915_wa_list *wal, i915_reg_t reg,
u32 clear, u32 set, u32 read_mask, bool masked_reg)
{
--
2.20.1
next prev parent reply other threads:[~2021-08-03 20:13 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-03 20:13 [Intel-gfx] [PATCH 0/8] Enable triggered perf query for Xe_HP Umesh Nerlige Ramappa
2021-08-03 20:13 ` [Intel-gfx] [PATCH 1/8] drm/i915/gt: Lock intel_engine_apply_whitelist with uncore->lock Umesh Nerlige Ramappa
2021-08-03 20:13 ` Umesh Nerlige Ramappa [this message]
2021-08-03 20:13 ` [Intel-gfx] [PATCH 3/8] drm/i915/gt: Check for conflicting RING_NONPRIV Umesh Nerlige Ramappa
2021-08-03 20:13 ` [Intel-gfx] [PATCH 4/8] drm/i915/gt: Enable dynamic adjustment of RING_NONPRIV Umesh Nerlige Ramappa
2021-08-03 20:13 ` [Intel-gfx] [PATCH 5/8] drm/i915/perf: Ensure observation logic is not clock gated Umesh Nerlige Ramappa
2021-08-03 20:13 ` [Intel-gfx] [PATCH 6/8] drm/i915/perf: Whitelist OA report trigger registers Umesh Nerlige Ramappa
2021-08-03 20:13 ` [Intel-gfx] [PATCH 7/8] drm/i915/perf: Whitelist OA counter and buffer registers Umesh Nerlige Ramappa
2021-08-03 20:13 ` [Intel-gfx] [PATCH 8/8] drm/i915/perf: Map OA buffer to user space for gen12 performance query Umesh Nerlige Ramappa
2021-08-03 20:18 ` [Intel-gfx] [PATCH 0/8] Enable triggered perf query for Xe_HP Umesh Nerlige Ramappa
2021-08-03 20:27 ` Umesh Nerlige Ramappa
2021-08-03 21:17 ` [Intel-gfx] ✗ Fi.CI.DOCS: warning for " Patchwork
2021-08-03 21:58 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork
-- strict thread matches above, loose matches on Subject: below --
2021-08-30 19:38 [Intel-gfx] [PATCH 0/8] " Umesh Nerlige Ramappa
2021-08-30 19:38 ` [Intel-gfx] [PATCH 2/8] drm/i915/gt: Refactor _wa_add to reuse wa_index and wa_list_grow Umesh Nerlige Ramappa
2020-11-17 11:01 [Intel-gfx] [PATCH 1/8] drm/i915/gt: Lock intel_engine_apply_whitelist with uncore->lock Chris Wilson
2020-11-17 11:01 ` [Intel-gfx] [PATCH 2/8] drm/i915/gt: Refactor _wa_add to reuse wa_index and wa_list_grow Chris Wilson
2020-11-17 18:14 ` Umesh Nerlige Ramappa
2021-02-27 6:58 ` Lucas De Marchi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210803201349.31031-3-umesh.nerlige.ramappa@intel.com \
--to=umesh.nerlige.ramappa@intel.com \
--cc=ashutosh.dixit@intel.com \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=intel-gfx@lists.freedesktop.org \
--cc=lionel.g.landwerlin@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).