diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_draw.c | 10 | ||||
| -rw-r--r-- | src/gallium/drivers/radeonsi/sid.h | 1 |
2 files changed, 10 insertions, 1 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index 3efaecc5e61..d31f77f9849 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -706,8 +706,16 @@ void si_emit_cache_flush(struct si_context *si_ctx, struct r600_atom *atom) radeon_emit(cs, EVENT_TYPE(V_028A90_VGT_STREAMOUT_SYNC) | EVENT_INDEX(0)); } + /* Make sure ME is idle (it executes most packets) before continuing. + * This prevents read-after-write hazards between PFP and ME. + */ + if (cp_coher_cntl || (sctx->flags & SI_CONTEXT_CS_PARTIAL_FLUSH)) { + radeon_emit(cs, PKT3(PKT3_PFP_SYNC_ME, 0, 0)); + radeon_emit(cs, 0); + } + /* When one of the DEST_BASE flags is set, SURFACE_SYNC waits for idle. - * Therefore, it should be last. + * Therefore, it should be last. Done in PFP. */ if (cp_coher_cntl) { /* ACQUIRE_MEM is only required on a compute ring. */ diff --git a/src/gallium/drivers/radeonsi/sid.h b/src/gallium/drivers/radeonsi/sid.h index f0aa605c2d9..11d6090317c 100644 --- a/src/gallium/drivers/radeonsi/sid.h +++ b/src/gallium/drivers/radeonsi/sid.h @@ -132,6 +132,7 @@ #define COPY_DATA_DST_SEL(x) (((x) & 0xf) << 8) #define COPY_DATA_COUNT_SEL (1 << 16) #define COPY_DATA_WR_CONFIRM (1 << 20) +#define PKT3_PFP_SYNC_ME 0x42 /* r7xx+ */ #define PKT3_SURFACE_SYNC 0x43 /* deprecated on CIK, use ACQUIRE_MEM */ #define PKT3_ME_INITIALIZE 0x44 /* not on CIK */ #define PKT3_COND_WRITE 0x45 |