On Mon, Feb 28, 2022 at 09:42:36AM -0800, Matt Roper wrote:
From: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
CCS will reuse the RCS functions for breadcrumb and flush emission.
However, CCS pipe_control has additional programming restrictions:
- Command Streamer Stall Enable must be always set
- Post Sync Operations must not be set to Write PS Depth Count
- 3D-related bits must not be set
Bspec: 47112
Cc: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 35 +++++++++++++++-----
drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 15 +++++++++
2 files changed, 41 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
index 1f8cf4f790b2..0a29eaf8b0df 100644
--- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
@@ -201,6 +201,8 @@ static u32 *gen12_emit_aux_table_inv(const i915_reg_t inv_reg, u32 *cs)
int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)
{
+ struct intel_engine_cs *engine = rq->engine;
+
if (mode & EMIT_FLUSH) {
u32 flags = 0;
u32 *cs;
@@ -219,6 +221,9 @@ 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;
+
cs = intel_ring_begin(rq, 6);
if (IS_ERR(cs))
return PTR_ERR(cs);
@@ -246,6 +251,9 @@ 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;
+
cs = intel_ring_begin(rq, 8 + 4);
if (IS_ERR(cs))
return PTR_ERR(cs);
@@ -618,19 +626,28 @@ u32 *gen12_emit_fini_breadcrumb_xcs(struct i915_request *rq, u32 *cs)
u32 *gen12_emit_fini_breadcrumb_rcs(struct i915_request *rq, u32 *cs)
{
+ struct drm_i915_private *i915 = rq->engine->i915;
+
extra blank line here
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Lucas De Marchi
+ u32 flags = (PIPE_CONTROL_CS_STALL |
+ PIPE_CONTROL_TILE_CACHE_FLUSH |
+ PIPE_CONTROL_FLUSH_L3 |
+ PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH |
+ PIPE_CONTROL_DEPTH_CACHE_FLUSH |
+ PIPE_CONTROL_DC_FLUSH_ENABLE |
+ PIPE_CONTROL_FLUSH_ENABLE);
+
+ if (GRAPHICS_VER(i915) == 12 && GRAPHICS_VER_FULL(i915) < IP_VER(12, 50))
+ /* Wa_1409600907 */
+ flags |= PIPE_CONTROL_DEPTH_STALL;
+
+ if (rq->engine->class == COMPUTE_CLASS)
+ flags &= ~PIPE_CONTROL_3D_FLAGS;
+
cs = gen12_emit_ggtt_write_rcs(cs,
rq->fence.seqno,
hwsp_offset(rq),
PIPE_CONTROL0_HDC_PIPELINE_FLUSH,
- PIPE_CONTROL_CS_STALL |
- PIPE_CONTROL_TILE_CACHE_FLUSH |
- PIPE_CONTROL_FLUSH_L3 |
- PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH |
- PIPE_CONTROL_DEPTH_CACHE_FLUSH |
- /* Wa_1409600907:tgl */
- PIPE_CONTROL_DEPTH_STALL |
- PIPE_CONTROL_DC_FLUSH_ENABLE |
- PIPE_CONTROL_FLUSH_ENABLE);
+ flags);
return gen12_emit_fini_breadcrumb_tail(rq, cs);
}
diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
index f8253012d166..d112ffd56418 100644
--- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
+++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
@@ -228,11 +228,14 @@
#define PIPE_CONTROL_COMMAND_CACHE_INVALIDATE (1<<29) /* gen11+ */
#define PIPE_CONTROL_TILE_CACHE_FLUSH (1<<28) /* gen11+ */
#define PIPE_CONTROL_FLUSH_L3 (1<<27)
+#define PIPE_CONTROL_AMFS_FLUSH (1<<25) /* gen12+ */
#define PIPE_CONTROL_GLOBAL_GTT_IVB (1<<24) /* gen7+ */
#define PIPE_CONTROL_MMIO_WRITE (1<<23)
#define PIPE_CONTROL_STORE_DATA_INDEX (1<<21)
#define PIPE_CONTROL_CS_STALL (1<<20)
+#define PIPE_CONTROL_GLOBAL_SNAPSHOT_RESET (1<<19)
#define PIPE_CONTROL_TLB_INVALIDATE (1<<18)
+#define PIPE_CONTROL_PSD_SYNC (1<<17) /* gen11+ */
#define PIPE_CONTROL_MEDIA_STATE_CLEAR (1<<16)
#define PIPE_CONTROL_WRITE_TIMESTAMP (3<<14)
#define PIPE_CONTROL_QW_WRITE (1<<14)
@@ -254,6 +257,18 @@
#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 (\
+ PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH | \
+ PIPE_CONTROL_DEPTH_CACHE_FLUSH | \
+ PIPE_CONTROL_TILE_CACHE_FLUSH | \
+ PIPE_CONTROL_DEPTH_STALL | \
+ PIPE_CONTROL_STALL_AT_SCOREBOARD | \
+ PIPE_CONTROL_PSD_SYNC | \
+ PIPE_CONTROL_AMFS_FLUSH | \
+ PIPE_CONTROL_VF_CACHE_INVALIDATE | \
+ PIPE_CONTROL_GLOBAL_SNAPSHOT_RESET)
+
#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 */
--
2.34.1
