The GFX_MODE is reset along with the engine, turning off ppGTT. We need
to re-enable it upon resume.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/gen6_ppgtt.c | 9 ---------
drivers/gpu/drm/i915/gt/intel_ring_submission.c | 13 ++++++++++---
2 files changed, 10 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/gen6_ppgtt.c b/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
index 680bd9442eb0..0f02afe7f43a 100644
--- a/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
+++ b/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
@@ -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)
diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index 20f42722be8b..01553f029ac1 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -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));
}
}
--
2.20.1
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