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author | Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> | 2022-04-16 01:40:21 +0300 |
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committer | John Harrison <John.C.Harrison@Intel.com> | 2022-04-19 21:33:45 +0300 |
commit | dac38381098d868d979b47e1e6ebba848db4d80f (patch) | |
tree | d308b366eee3a50406dacf519878ad24cbd8d38d /drivers/gpu/drm/i915/gt/uc/intel_guc.c | |
parent | f6aa0d713c8862602e85e89f876b25185234aced (diff) | |
download | linux-dac38381098d868d979b47e1e6ebba848db4d80f.tar.xz |
drm/i915/guc: Enable Wa_22011802037 for gen12 GuC based platforms
Initiating a reset when the command streamer is not idle or in the
middle of executing an MI_FORCE_WAKE can result in a hang. Multiple
command streamers can be part of a single reset domain, so resetting one
would mean resetting all command streamers in that domain.
To workaround this, before initiating a reset, ensure that all command
streamers within that reset domain are either IDLE or are not executing
a MI_FORCE_WAKE.
Enable GuC PRE_PARSER WA bit so that GuC follows the WA sequence when
initiating engine-resets.
For gt-resets, ensure that i915 applies the WA sequence.
Opens to address in future patches:
- The part of the WA to wait for pending forcewakes is also applicable
to execlists backend.
- The WA also needs to be applied for gen11
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220415224025.3693037-3-umesh.nerlige.ramappa@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_guc.c')
-rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_guc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index cda7e4bb8bac..185fb4d59791 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -292,6 +292,10 @@ static u32 guc_ctl_wa_flags(struct intel_guc *guc) GRAPHICS_VER_FULL(gt->i915) < IP_VER(12, 50)) flags |= GUC_WA_POLLCS; + /* Wa_22011802037: graphics version 12 */ + if (GRAPHICS_VER(gt->i915) == 12) + flags |= GUC_WA_PRE_PARSER; + return flags; } |