gallium/radeon: set EVENT_WRITE_EOP.INT_SEL = wait for write confirmation
Ported from Vulkan.
Not sure what this is good for.. maybe write confirmation from L2 flushes?
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
diff --git a/src/amd/common/r600d_common.h b/src/amd/common/r600d_common.h
index 5775746..76c5c4f 100644
--- a/src/amd/common/r600d_common.h
+++ b/src/amd/common/r600d_common.h
@@ -67,6 +67,9 @@
#define COPY_DATA_WR_CONFIRM (1 << 20)
#define PKT3_EVENT_WRITE 0x46
#define PKT3_EVENT_WRITE_EOP 0x47
+#define EOP_INT_SEL(x) ((x) << 24)
+#define EOP_INT_SEL_NONE 0
+#define EOP_INT_SEL_SEND_DATA_AFTER_WR_CONFIRM 3
#define EOP_DATA_SEL(x) ((x) << 29)
#define EOP_DATA_SEL_DISCARD 0
#define EOP_DATA_SEL_VALUE_32BIT 1
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c b/src/gallium/drivers/radeon/r600_pipe_common.c
index 7226fc2..7c12565 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.c
+++ b/src/gallium/drivers/radeon/r600_pipe_common.c
@@ -109,6 +109,12 @@
unsigned op = EVENT_TYPE(event) |
EVENT_INDEX(5) |
event_flags;
+ unsigned sel = EOP_DATA_SEL(data_sel);
+
+ /* Wait for write confirmation before writing data, but don't send
+ * an interrupt. */
+ if (ctx->chip_class >= SI && data_sel != EOP_DATA_SEL_DISCARD)
+ sel |= EOP_INT_SEL(EOP_INT_SEL_SEND_DATA_AFTER_WR_CONFIRM);
if (ctx->chip_class >= GFX9) {
/* A ZPASS_DONE or PIXEL_STAT_DUMP_EVENT (of the DB occlusion
@@ -136,7 +142,7 @@
radeon_emit(cs, PKT3(PKT3_RELEASE_MEM, 6, 0));
radeon_emit(cs, op);
- radeon_emit(cs, EOP_DATA_SEL(data_sel));
+ radeon_emit(cs, sel);
radeon_emit(cs, va); /* address lo */
radeon_emit(cs, va >> 32); /* address hi */
radeon_emit(cs, new_fence); /* immediate data lo */
@@ -155,7 +161,7 @@
radeon_emit(cs, PKT3(PKT3_EVENT_WRITE_EOP, 4, 0));
radeon_emit(cs, op);
radeon_emit(cs, va);
- radeon_emit(cs, ((va >> 32) & 0xffff) | EOP_DATA_SEL(data_sel));
+ radeon_emit(cs, ((va >> 32) & 0xffff) | sel);
radeon_emit(cs, 0); /* immediate data */
radeon_emit(cs, 0); /* unused */
@@ -166,7 +172,7 @@
radeon_emit(cs, PKT3(PKT3_EVENT_WRITE_EOP, 4, 0));
radeon_emit(cs, op);
radeon_emit(cs, va);
- radeon_emit(cs, ((va >> 32) & 0xffff) | EOP_DATA_SEL(data_sel));
+ radeon_emit(cs, ((va >> 32) & 0xffff) | sel);
radeon_emit(cs, new_fence); /* immediate data */
radeon_emit(cs, 0); /* unused */
}