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drm/i915/gt: Reapply ppgtt enabling after engine resets 

The GFX_MODE is reset along with the engine, turning off ppGTT. We need
to re-enable it upon resume afterwards.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210114101451.24762-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2021-01-14 10:14:51 +00:00
parent 368fd0d79c
commit 3db9353ea3
2 changed files with 10 additions and 12 deletions
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9
drivers/gpu/drm/i915/gt/gen6_ppgtt.c
View File

@ -27,8 +27,6 @@ void gen7_ppgtt_enable(struct intel_gt *gt)
{
struct drm_i915_private *i915 = gt->i915;
struct intel_uncore *uncore = gt->uncore;
struct intel_engine_cs *engine;
enum intel_engine_id id;
u32 ecochk;
intel_uncore_rmw(uncore, GAC_ECO_BITS, 0, ECOBITS_PPGTT_CACHE64B);
@ -41,13 +39,6 @@ void gen7_ppgtt_enable(struct intel_gt *gt)
ecochk &= ~ECOCHK_PPGTT_GFDT_IVB;
}
intel_uncore_write(uncore, GAM_ECOCHK, ecochk);
for_each_engine(engine, gt, id) {
/* GFX_MODE is per-ring on gen7+ */
ENGINE_WRITE(engine,
RING_MODE_GEN7,
_MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
}
}
void gen6_ppgtt_enable(struct intel_gt *gt)

13
drivers/gpu/drm/i915/gt/intel_ring_submission.c
View File

@ -189,9 +189,16 @@ static void set_pp_dir(struct intel_engine_cs *engine)
{
struct i915_address_space *vm = vm_alias(engine->gt->vm);
if (vm) {
ENGINE_WRITE(engine, RING_PP_DIR_DCLV, PP_DIR_DCLV_2G);
ENGINE_WRITE(engine, RING_PP_DIR_BASE, pp_dir(vm));
if (!vm)
return;
ENGINE_WRITE(engine, RING_PP_DIR_DCLV, PP_DIR_DCLV_2G);
ENGINE_WRITE(engine, RING_PP_DIR_BASE, pp_dir(vm));
if (INTEL_GEN(engine->i915) >= 7) {
ENGINE_WRITE(engine,
RING_MODE_GEN7,
_MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
}
}