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drm/i915: Consolidate condition for Wa_22011802037

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The workaround bounds for Wa_22011802037 are somewhat complex and are
replicated in several places throughout the code.  Pull the condition
out to a helper function to prevent mistakes if this condition needs to
change again in the future.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230821180619.650007-12-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper 2023-08-21 11:06:21 -07:00
parent c951778306
commit 28c46feec7
6 changed files with 24 additions and 12 deletions
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4
drivers/gpu/drm/i915/gt/intel_engine_cs.c
View File

@ -1617,9 +1617,7 @@ static int __intel_engine_stop_cs(struct intel_engine_cs *engine,
* Wa_22011802037: Prior to doing a reset, ensure CS is
* stopped, set ring stop bit and prefetch disable bit to halt CS
*/
if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
(GRAPHICS_VER(engine->i915) >= 11 &&
GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70)))
if (intel_engine_reset_needs_wa_22011802037(engine->gt))
intel_uncore_write_fw(uncore, RING_MODE_GEN7(engine->mmio_base),
_MASKED_BIT_ENABLE(GEN12_GFX_PREFETCH_DISABLE));

4
drivers/gpu/drm/i915/gt/intel_execlists_submission.c
View File

@ -3001,9 +3001,7 @@ static void execlists_reset_prepare(struct intel_engine_cs *engine)
* Wa_22011802037: In addition to stopping the cs, we need
* to wait for any pending mi force wakeups
*/
if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
(GRAPHICS_VER(engine->i915) >= 11 &&
GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70)))
if (intel_engine_reset_needs_wa_22011802037(engine->gt))
intel_engine_wait_for_pending_mi_fw(engine);
engine->execlists.reset_ccid = active_ccid(engine);

18
drivers/gpu/drm/i915/gt/intel_reset.c
View File

@ -1632,6 +1632,24 @@ void __intel_fini_wedge(struct intel_wedge_me *w)
w->gt = NULL;
}
/*
* Wa_22011802037 requires that we (or the GuC) ensure that no command
* streamers are executing MI_FORCE_WAKE while an engine reset is initiated.
*/
bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt)
{
if (GRAPHICS_VER(gt->i915) < 11)
return false;
if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0))
return true;
if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 70))
return false;
return true;
}
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftest_reset.c"
#include "selftest_hangcheck.c"

2
drivers/gpu/drm/i915/gt/intel_reset.h
View File

@ -78,4 +78,6 @@ void __intel_fini_wedge(struct intel_wedge_me *w);
bool intel_has_gpu_reset(const struct intel_gt *gt);
bool intel_has_reset_engine(const struct intel_gt *gt);
bool intel_engine_reset_needs_wa_22011802037(struct intel_gt *gt);
#endif /* I915_RESET_H */

4
drivers/gpu/drm/i915/gt/uc/intel_guc.c
View File

@ -288,9 +288,7 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc)
flags |= GUC_WA_DUAL_QUEUE;
/* Wa_22011802037: graphics version 11/12 */
if (IS_MTL_GRAPHICS_STEP(gt->i915, M, STEP_A0, STEP_B0) ||
(GRAPHICS_VER(gt->i915) >= 11 &&
GRAPHICS_VER_FULL(gt->i915) < IP_VER(12, 70)))
if (intel_engine_reset_needs_wa_22011802037(gt))
flags |= GUC_WA_PRE_PARSER;
/*

4
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
View File

@ -1658,9 +1658,7 @@ static void guc_engine_reset_prepare(struct intel_engine_cs *engine)
* Wa_22011802037: In addition to stopping the cs, we need
* to wait for any pending mi force wakeups
*/
if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) ||
(GRAPHICS_VER(engine->i915) >= 11 &&
GRAPHICS_VER_FULL(engine->i915) < IP_VER(12, 70))) {
if (intel_engine_reset_needs_wa_22011802037(engine->gt)) {
intel_engine_stop_cs(engine);
intel_engine_wait_for_pending_mi_fw(engine);
}