On Thu, May 05, 2022 at 02:38:05PM -0700, Matt Roper wrote:
From: Stuart Summers <stuart.summers@xxxxxxxxx>
Although we already strip 3D-specific flags from PIPE_CONTROL
instructions when submitting to a compute engine, there are some
additional flags that need to be removed when the platform as a whole
lacks a 3D pipeline. Add those restrictions here.
Bspec: 47112
Signed-off-by: Stuart Summers <stuart.summers@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 18 ++++++++++++------
drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 12 ++++++++++--
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/i915/i915_pci.c | 3 ++-
drivers/gpu/drm/i915/intel_device_info.h | 3 ++-
5 files changed, 28 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index 3e13960615bd..11c72792573d 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -197,8 +197,10 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
flags |= PIPE_CONTROL_CS_STALL;
- if (engine->class == COMPUTE_CLASS)
- flags &= ~PIPE_CONTROL_3D_FLAGS;
+ if (LACKS_3D_PIPELINE(engine->i915))
+ flags &= ~PIPE_CONTROL_3D_ARCH_FLAGS;
+ else if (engine->class == COMPUTE_CLASS)
+ flags &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;
cs = intel_ring_begin(rq, 6);
if (IS_ERR(cs))
@@ -227,8 +229,10 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
flags |= PIPE_CONTROL_CS_STALL;
- if (engine->class == COMPUTE_CLASS)
- flags &= ~PIPE_CONTROL_3D_FLAGS;
+ if (LACKS_3D_PIPELINE(engine->i915))
+ flags &= ~PIPE_CONTROL_3D_ARCH_FLAGS;
+ else if (engine->class == COMPUTE_CLASS)
+ flags &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;
if (!HAS_FLAT_CCS(rq->engine->i915))
count = 8 + 4;
@@ -716,8 +720,10 @@ u32 *gen12_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs)
/* Wa_1409600907 */
flags |= PIPE_CONTROL_DEPTH_STALL;
- if (rq->engine->class == COMPUTE_CLASS)
- flags &= ~PIPE_CONTROL_3D_FLAGS;
+ if (LACKS_3D_PIPELINE(rq->engine->i915))
+ flags &= ~PIPE_CONTROL_3D_ARCH_FLAGS;
+ else if (rq->engine->class == COMPUTE_CLASS)
+ flags &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;
cs = gen12_emit_ggtt_write_rcs(cs,
rq->fence.seqno,
diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
index 556bca3be804..900755f4b787 100644
--- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
+++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
@@ -288,8 +288,8 @@
#define PIPE_CONTROL_DEPTH_CACHE_FLUSH (1<<0)
#define PIPE_CONTROL_GLOBAL_GTT (1<<2) /* in addr dword */
-/* 3D-related flags can't be set on compute engine */
-#define PIPE_CONTROL_3D_FLAGS (\
+/* 3D-related flags that can't be set on _engines_ that lack a 3D pipeline */
+#define PIPE_CONTROL_3D_ENGINE_FLAGS (\
PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH | \
PIPE_CONTROL_DEPTH_CACHE_FLUSH | \
PIPE_CONTROL_TILE_CACHE_FLUSH | \
@@ -300,6 +300,14 @@
PIPE_CONTROL_VF_CACHE_INVALIDATE | \
PIPE_CONTROL_GLOBAL_SNAPSHOT_RESET)
+/* 3D-related flags that can't be set on _platforms_ that lack a 3D pipeline */
+#define PIPE_CONTROL_3D_ARCH_FLAGS ( \
names and comments here I think are confusing. In the code we do:
if (LACKS_3D_PIPELINE(engine->i915))
flags &= ~PIPE_CONTROL_3D_ARCH_FLAGS;
else if (engine->class == COMPUTE_CLASS)
flags &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;
coments give the _engines_ that lack a 3D pipeline doens't seem accurate
as bcs, vcs, vecs also lack a 3d pipeline. Maybe be explicit about the
flags being set on compute engine: PIPE_CONTROL_COMPUTE_ENGINE_FLAGS
And LACKS_3D_PIPELINE... may be better to invert the condition to follow
the other macros: HAS_3D_PIPELINE.
+ PIPE_CONTROL_3D_ENGINE_FLAGS | \
+ PIPE_CONTROL_INDIRECT_STATE_DISABLE | \
+ PIPE_CONTROL_FLUSH_ENABLE | \
+ PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE | \
+ PIPE_CONTROL_DC_FLUSH_ENABLE)
+
#define MI_MATH(x) MI_INSTR(0x1a, (x) - 1)
#define MI_MATH_INSTR(opcode, op1, op2) ((opcode) << 20 | (op1) << 10 | (op2))
/* Opcodes for MI_MATH_INSTR */
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b389674b5210..1e153cefc92e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1403,6 +1403,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define HAS_MBUS_JOINING(i915) (IS_ALDERLAKE_P(i915))
+#define LACKS_3D_PIPELINE(i915) (INTEL_INFO(i915)->lacks_3d_pipeline)
+
/* i915_gem.c */
void i915_gem_init_early(struct drm_i915_private *dev_priv);
void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 07722cdf63ac..14e0e8225324 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -1077,7 +1077,8 @@ static const struct intel_device_info ats_m_info = {
#define XE_HPC_FEATURES \
XE_HP_FEATURES, \
.dma_mask_size = 52, \
- .has_l3_ccs_read = 1
+ .has_l3_ccs_read = 1, \
+ .lacks_3d_pipeline = 1
isn't the absence of RCS sufficient so this could be done only in the
macro rather than adding a flag here?
Lucas De Marchi
__maybe_unused
static const struct intel_device_info pvc_info = {
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index 09e33296157a..972084676984 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -165,7 +165,8 @@ enum intel_ppgtt_type {
func(has_snoop); \
func(has_coherent_ggtt); \
func(unfenced_needs_alignment); \
- func(hws_needs_physical);
+ func(hws_needs_physical); \
+ func(lacks_3d_pipeline);
#define DEV_INFO_DISPLAY_FOR_EACH_FLAG(func) \
/* Keep in alphabetical order */ \
--
2.35.1
