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drm/i915: Move MMCD_MISC_CTRL from context w/a to standard

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Looking at gem_workarounds shows us that MMCD_MISC_CTRL is not restored
following a suspend-resume cycle. This implies that MMCD_MISC_CTRL is
not stored in the context, but is an ordinary register w/a that we need to
restore during init_hw.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Oscar Mateo <oscar.mateo@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171004124153.14142-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
This commit is contained in:
Chris Wilson 2017-10-04 13:41:52 +01:00
parent 32ced39c1b
commit 53221e11c7
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/intel_engine_cs.c
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@ -980,7 +980,11 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
GEN9_PBE_COMPRESSED_HASH_SELECTION);
WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
GEN9_SAMPLER_HASH_COMPRESSED_READ_ADDR);
WA_SET_BIT(MMCD_MISC_CTRL, MMCD_PCLA | MMCD_HOTSPOT_EN);
I915_WRITE(MMCD_MISC_CTRL,
I915_READ(MMCD_MISC_CTRL) |
MMCD_PCLA |
MMCD_HOTSPOT_EN);
}
/* WaClearFlowControlGpgpuContextSave:skl,bxt,kbl,glk,cfl */