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drm/i915/bdw: Implement WaForceContextSaveRestoreNonCoherent

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v2: Reorder defines (Ben)
v3: More bikesheds, this time re-ordering comments! (Chris)

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
[danvet: Resolve conflict.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2015-02-10 10:31:00 +00:00 committed by Daniel Vetter
parent c57e355122
commit 35cb6f3b4e
2 changed files with 8 additions and 5 deletions
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5
drivers/gpu/drm/i915/i915_reg.h
View file

@ -5260,9 +5260,10 @@ enum skl_disp_power_wells {
/* GEN8 chicken */
#define HDC_CHICKEN0 0x7300
#define HDC_FORCE_NON_COHERENT (1<<4)
#define HDC_DONOT_FETCH_MEM_WHEN_MASKED (1<<11)
#define HDC_FENCE_DEST_SLM_DISABLE (1<<14)
#define HDC_DONOT_FETCH_MEM_WHEN_MASKED (1<<11)
#define HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT (1<<5)
#define HDC_FORCE_NON_COHERENT (1<<4)
/* WaCatErrorRejectionIssue */
#define GEN7_SQ_CHICKEN_MBCUNIT_CONFIG 0x9030

8
drivers/gpu/drm/i915/intel_ringbuffer.c
View file

@ -788,12 +788,14 @@ static int bdw_init_workarounds(struct intel_engine_cs *ring)
* workaround for for a possible hang in the unlikely event a TLB
* invalidation occurs during a PSD flush.
*/
/* WaForceEnableNonCoherent:bdw */
/* WaHdcDisableFetchWhenMasked:bdw */
/* WaDisableFenceDestinationToSLM:bdw (GT3 pre-production) */
WA_SET_BIT_MASKED(HDC_CHICKEN0,
/* WaForceEnableNonCoherent:bdw */
HDC_FORCE_NON_COHERENT |
/* WaForceContextSaveRestoreNonCoherent:bdw */
HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
/* WaHdcDisableFetchWhenMasked:bdw */
HDC_DONOT_FETCH_MEM_WHEN_MASKED |
/* WaDisableFenceDestinationToSLM:bdw (pre-prod) */
(IS_BDW_GT3(dev) ? HDC_FENCE_DEST_SLM_DISABLE : 0));
/* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0: