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authorKenneth Graunke <[email protected]>2019-04-24 16:43:36 -0700
committerKenneth Graunke <[email protected]>2019-04-25 11:26:24 -0700
commitaa7306b4cfcae3898f5b8ff2ef3022a0e6329649 (patch)
tree0d57fd420b622d1182f8d53963202c398a1eacb1 /src/gallium
parent383f4065911314906fb23e639308e68a5e40524d (diff)
iris: Some tidying for preemption support
Just enable it during init_render_context on Gen10+, and move the Gen9 state tracking into iris_genx_state so it only exists on Gen9. Reviewed-by: Mike Blumenkrantz <[email protected]> Reviewed-by: Rafael Antognolli <[email protected]>
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/drivers/iris/iris_context.c2
-rw-r--r--src/gallium/drivers/iris/iris_context.h7
-rw-r--r--src/gallium/drivers/iris/iris_draw.c66
-rw-r--r--src/gallium/drivers/iris/iris_state.c125
4 files changed, 102 insertions, 98 deletions
diff --git a/src/gallium/drivers/iris/iris_context.c b/src/gallium/drivers/iris/iris_context.c
index 91cd6a02262..a1d11755a24 100644
--- a/src/gallium/drivers/iris/iris_context.c
+++ b/src/gallium/drivers/iris/iris_context.c
@@ -218,8 +218,6 @@ iris_create_context(struct pipe_screen *pscreen, void *priv, unsigned flags)
ice->vtbl.init_render_context(screen, &ice->batches[IRIS_BATCH_RENDER],
&ice->vtbl, &ice->dbg);
- if (screen->devinfo.gen == 10)
- gen10_iris_enable_obj_preemption(ice, &ice->batches[IRIS_BATCH_RENDER], true);
ice->vtbl.init_compute_context(screen, &ice->batches[IRIS_BATCH_COMPUTE],
&ice->vtbl, &ice->dbg);
diff --git a/src/gallium/drivers/iris/iris_context.h b/src/gallium/drivers/iris/iris_context.h
index 79e78d0adb7..1153cb84bb9 100644
--- a/src/gallium/drivers/iris/iris_context.h
+++ b/src/gallium/drivers/iris/iris_context.h
@@ -542,8 +542,6 @@ struct iris_context {
/** Bitfield of which vertex buffers are bound (non-null). */
uint64_t bound_vertex_buffers;
- bool object_preemption; /**< Object level preemption enabled. */
-
bool primitive_restart;
unsigned cut_index;
enum pipe_prim_type prim_mode:8;
@@ -819,6 +817,7 @@ void iris_cache_flush_for_depth(struct iris_batch *batch, struct iris_bo *bo);
void iris_depth_cache_add_bo(struct iris_batch *batch, struct iris_bo *bo);
/* iris_state.c */
-void gen9_iris_enable_obj_preemption(struct iris_context *ice, struct iris_batch *batch, bool enable);
-void gen10_iris_enable_obj_preemption(struct iris_context *ice, struct iris_batch *batch, bool enable);
+void gen9_toggle_preemption(struct iris_context *ice,
+ struct iris_batch *batch,
+ const struct pipe_draw_info *draw);
#endif
diff --git a/src/gallium/drivers/iris/iris_draw.c b/src/gallium/drivers/iris/iris_draw.c
index c859d93c009..94af728c693 100644
--- a/src/gallium/drivers/iris/iris_draw.c
+++ b/src/gallium/drivers/iris/iris_draw.c
@@ -40,67 +40,6 @@
#include "iris_defines.h"
/**
- * Implement workarounds for preemption:
- * - WaDisableMidObjectPreemptionForGSLineStripAdj
- * - WaDisableMidObjectPreemptionForTrifanOrPolygon
- * - WaDisableMidObjectPreemptionForLineLoop
- * - WA#0798
- */
-static void
-gen9_emit_preempt_wa(struct iris_context *ice, struct iris_batch *batch,
- const struct pipe_draw_info *info)
-{
- bool object_preemption = true;
- struct iris_screen *screen = (struct iris_screen *)ice->ctx.screen;
-
- /* Only apply these workarounds for gen9 */
- assert(screen->devinfo.gen == 9);
-
- /* WaDisableMidObjectPreemptionForGSLineStripAdj
- *
- * WA: Disable mid-draw preemption when draw-call is a linestrip_adj and
- * GS is enabled.
- */
- if (ice->state.prim_mode == PIPE_PRIM_LINE_STRIP_ADJACENCY &&
- ice->shaders.prog[MESA_SHADER_GEOMETRY])
- object_preemption = false;
-
- /* WaDisableMidObjectPreemptionForTrifanOrPolygon
- *
- * TriFan miscompare in Execlist Preemption test. Cut index that is on a
- * previous context. End the previous, the resume another context with a
- * tri-fan or polygon, and the vertex count is corrupted. If we prempt
- * again we will cause corruption.
- *
- * WA: Disable mid-draw preemption when draw-call has a tri-fan.
- */
- if (ice->state.prim_mode == PIPE_PRIM_TRIANGLE_FAN)
- object_preemption = false;
-
- /* WaDisableMidObjectPreemptionForLineLoop
- *
- * VF Stats Counters Missing a vertex when preemption enabled.
- *
- * WA: Disable mid-draw preemption when the draw uses a lineloop
- * topology.
- */
- if (ice->state.prim_mode == PIPE_PRIM_LINE_LOOP)
- object_preemption = false;
-
- /* WA#0798
- *
- * VF is corrupting GAFS data when preempted on an instance boundary and
- * replayed with instancing enabled.
- *
- * WA: Disable preemption when using instanceing.
- */
- if (info->instance_count > 1)
- object_preemption = false;
-
- gen9_iris_enable_obj_preemption(ice, batch, object_preemption);
-}
-
-/**
* Record the current primitive mode and restart information, flagging
* related packets as dirty if necessary.
*/
@@ -178,6 +117,7 @@ iris_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
{
struct iris_context *ice = (struct iris_context *) ctx;
struct iris_screen *screen = (struct iris_screen*)ice->ctx.screen;
+ const struct gen_device_info *devinfo = &screen->devinfo;
struct iris_batch *batch = &ice->batches[IRIS_BATCH_RENDER];
if (ice->state.predicate == IRIS_PREDICATE_STATE_DONT_RENDER)
@@ -193,8 +133,8 @@ iris_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
iris_update_draw_info(ice, info);
- if (screen->devinfo.gen == 9)
- gen9_emit_preempt_wa(ice, batch, info);
+ if (devinfo->gen == 9)
+ gen9_toggle_preemption(ice, batch, info);
iris_update_compiled_shaders(ice);
diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index 92275b48a4d..c0c0ed02e71 100644
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -653,6 +653,24 @@ iris_emit_default_l3_config(struct iris_batch *batch,
iris_emit_l3_config(batch, cfg, has_slm, wants_dc_cache);
}
+#if GEN_GEN >= 9
+static void
+iris_enable_obj_preemption(struct iris_batch *batch, bool enable)
+{
+ uint32_t reg_val;
+
+ /* A fixed function pipe flush is required before modifying this field */
+ iris_emit_end_of_pipe_sync(batch, PIPE_CONTROL_RENDER_TARGET_FLUSH);
+
+ /* enable object level preemption */
+ iris_pack_state(GENX(CS_CHICKEN1), &reg_val, reg) {
+ reg.ReplayMode = enable;
+ reg.ReplayModeMask = true;
+ }
+ iris_emit_lri(batch, CS_CHICKEN1, reg_val);
+}
+#endif
+
/**
* Upload the initial GPU state for a render context.
*
@@ -775,6 +793,11 @@ iris_init_render_context(struct iris_screen *screen,
alloc.ConstantBufferSize = i == MESA_SHADER_FRAGMENT ? 8 : 6;
}
}
+
+#if GEN_GEN == 10
+ /* Gen11+ is enabled for us by the kernel. */
+ iris_enable_obj_preemption(batch, true);
+#endif
}
static void
@@ -826,6 +849,11 @@ struct iris_genx_state {
uint32_t so_buffers[4 * GENX(3DSTATE_SO_BUFFER_length)];
+#if GEN_GEN == 9
+ /* Is object level preemption enabled? */
+ bool object_preemption;
+#endif
+
struct {
#if GEN_GEN == 8
struct brw_image_param image_param[PIPE_MAX_SHADER_IMAGES];
@@ -6180,6 +6208,74 @@ genX(emit_urb_setup)(struct iris_context *ice,
}
}
+#if GEN_GEN == 9
+/**
+ * Preemption on Gen9 has to be enabled or disabled in various cases.
+ *
+ * See these workarounds for preemption:
+ * - WaDisableMidObjectPreemptionForGSLineStripAdj
+ * - WaDisableMidObjectPreemptionForTrifanOrPolygon
+ * - WaDisableMidObjectPreemptionForLineLoop
+ * - WA#0798
+ *
+ * We don't put this in the vtable because it's only used on Gen9.
+ */
+void
+gen9_toggle_preemption(struct iris_context *ice,
+ struct iris_batch *batch,
+ const struct pipe_draw_info *draw)
+{
+ struct iris_genx_state *genx = ice->state.genx;
+ bool object_preemption = true;
+
+ /* WaDisableMidObjectPreemptionForGSLineStripAdj
+ *
+ * "WA: Disable mid-draw preemption when draw-call is a linestrip_adj
+ * and GS is enabled."
+ */
+ if (draw->mode == PIPE_PRIM_LINE_STRIP_ADJACENCY &&
+ ice->shaders.prog[MESA_SHADER_GEOMETRY])
+ object_preemption = false;
+
+ /* WaDisableMidObjectPreemptionForTrifanOrPolygon
+ *
+ * "TriFan miscompare in Execlist Preemption test. Cut index that is
+ * on a previous context. End the previous, the resume another context
+ * with a tri-fan or polygon, and the vertex count is corrupted. If we
+ * prempt again we will cause corruption.
+ *
+ * WA: Disable mid-draw preemption when draw-call has a tri-fan."
+ */
+ if (draw->mode == PIPE_PRIM_TRIANGLE_FAN)
+ object_preemption = false;
+
+ /* WaDisableMidObjectPreemptionForLineLoop
+ *
+ * "VF Stats Counters Missing a vertex when preemption enabled.
+ *
+ * WA: Disable mid-draw preemption when the draw uses a lineloop
+ * topology."
+ */
+ if (draw->mode == PIPE_PRIM_LINE_LOOP)
+ object_preemption = false;
+
+ /* WA#0798
+ *
+ * "VF is corrupting GAFS data when preempted on an instance boundary
+ * and replayed with instancing enabled.
+ *
+ * WA: Disable preemption when using instanceing."
+ */
+ if (draw->instance_count > 1)
+ object_preemption = false;
+
+ if (genx->object_preemption != object_preemption) {
+ iris_enable_obj_preemption(batch, object_preemption);
+ genx->object_preemption = object_preemption;
+ }
+}
+#endif
+
void
genX(init_state)(struct iris_context *ice)
{
@@ -6278,32 +6374,3 @@ genX(init_state)(struct iris_context *ice)
};
}
}
-
-#if GEN_GEN >= 9
-/* not called externally */
-void gen11_iris_enable_obj_preemption(struct iris_context *ice, struct iris_batch *batch, bool enable);
-
-void
-genX(iris_enable_obj_preemption)(struct iris_context *ice, struct iris_batch *batch, bool enable)
-{
- uint32_t reg_val;
- struct iris_screen *screen = (struct iris_screen *)ice->ctx.screen;
-
- assert(screen->devinfo.gen >= 9);
-
- if (enable == ice->state.object_preemption)
- return;
- ice->state.object_preemption = enable;
-
- /* A fixed function pipe flush is required before modifying this field */
- iris_emit_end_of_pipe_sync(batch,
- PIPE_CONTROL_RENDER_TARGET_FLUSH);
-
- /* enable object level preemption */
- iris_pack_state(GENX(CS_CHICKEN1), &reg_val, reg) {
- reg.ReplayMode = enable;
- reg.ReplayModeMask = true;
- }
- iris_emit_lri(batch, CS_CHICKEN1, reg_val);
-}
-#endif