diff options
Diffstat (limited to 'src/gallium/drivers/radeon')
| -rw-r--r-- | src/gallium/drivers/radeon/r600_pipe_common.c | 24 | ||||
| -rw-r--r-- | src/gallium/drivers/radeon/r600_pipe_common.h | 1 |
2 files changed, 25 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.c b/src/gallium/drivers/radeon/r600_pipe_common.c index cea6b7bce82..3e15b143700 100644 --- a/src/gallium/drivers/radeon/r600_pipe_common.c +++ b/src/gallium/drivers/radeon/r600_pipe_common.c @@ -149,6 +149,30 @@ void r600_need_dma_space(struct r600_common_context *ctx, unsigned num_dw) } } +/* This is required to prevent read-after-write hazards. */ +void r600_dma_emit_wait_idle(struct r600_common_context *rctx) +{ + struct radeon_winsys_cs *cs = rctx->dma.cs; + + /* done at the end of DMA calls, so increment this. */ + rctx->num_dma_calls++; + + r600_need_dma_space(rctx, 1); + + if (cs->cdw == 0) /* empty queue */ + return; + + /* NOP waits for idle on Evergreen and later. */ + if (rctx->chip_class >= CIK) + radeon_emit(cs, 0x00000000); /* NOP */ + else if (rctx->chip_class >= EVERGREEN) + radeon_emit(cs, 0xf0000000); /* NOP */ + else { + /* TODO: R600-R700 should use the FENCE packet. + * CS checker support is required. */ + } +} + static void r600_memory_barrier(struct pipe_context *ctx, unsigned flags) { } diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h b/src/gallium/drivers/radeon/r600_pipe_common.h index 47b73653e93..03449536b5b 100644 --- a/src/gallium/drivers/radeon/r600_pipe_common.h +++ b/src/gallium/drivers/radeon/r600_pipe_common.h @@ -598,6 +598,7 @@ struct pipe_resource *r600_resource_create_common(struct pipe_screen *screen, const struct pipe_resource *templ); const char *r600_get_llvm_processor_name(enum radeon_family family); void r600_need_dma_space(struct r600_common_context *ctx, unsigned num_dw); +void r600_dma_emit_wait_idle(struct r600_common_context *rctx); /* r600_gpu_load.c */ void r600_gpu_load_kill_thread(struct r600_common_screen *rscreen); |