radeonsi: disable SDMA clears and copies for sparse buffers

VM faults cannot be disabled for SDMA on <= VI.

We could still use SDMA by asking the winsys about which parts of the
buffers are committed. This is left as a potential future improvement.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

3 files changed, 11 insertions, 4 deletions

diff --git a/src/gallium/drivers/radeonsi/cik_sdma.c b/src/gallium/drivers/radeonsi/cik_sdma.c
index 38833666a8d..99285a6de17 100644
--- a/src/gallium/drivers/radeonsi/cik_sdma.c
+++ b/src/gallium/drivers/radeonsi/cik_sdma.c
@@ -80,7 +80,8 @@ static void cik_sdma_clear_buffer(struct pipe_context *ctx,
 	unsigned i, ncopy, csize;
 	struct r600_resource *rdst = r600_resource(dst);
 
-	if (!cs || offset % 4 != 0 || size % 4 != 0) {
+	if (!cs || offset % 4 != 0 || size % 4 != 0 ||
+	    dst->flags & PIPE_RESOURCE_FLAG_SPARSE) {
 		ctx->clear_buffer(ctx, dst, offset, size, &clear_value, 4);
 		return;
 	}
@@ -526,7 +527,9 @@ static void cik_sdma_copy(struct pipe_context *ctx,
 {
 	struct si_context *sctx = (struct si_context *)ctx;
 
-	if (!sctx->b.dma.cs)
+	if (!sctx->b.dma.cs ||
+	    src->flags & PIPE_RESOURCE_FLAG_SPARSE ||
+	    dst->flags & PIPE_RESOURCE_FLAG_SPARSE)
 		goto fallback;
 
 	if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) {
diff --git a/src/gallium/drivers/radeonsi/si_cp_dma.c b/src/gallium/drivers/radeonsi/si_cp_dma.c
index 74e0b2d46df..9505d622aef 100644
--- a/src/gallium/drivers/radeonsi/si_cp_dma.c
+++ b/src/gallium/drivers/radeonsi/si_cp_dma.c
@@ -223,6 +223,7 @@ static void si_clear_buffer(struct pipe_context *ctx, struct pipe_resource *dst,
 	/* dma_clear_buffer can use clear_buffer on failure. Make sure that
 	 * doesn't happen. We don't want an infinite recursion: */
 	if (sctx->b.dma.cs &&
+	    !(dst->flags & PIPE_RESOURCE_FLAG_SPARSE) &&
 	    (offset % 4 == 0) &&
 	    /* CP DMA is very slow. Always use SDMA for big clears. This
 	     * alone improves DeusEx:MD performance by 70%. */
diff --git a/src/gallium/drivers/radeonsi/si_dma.c b/src/gallium/drivers/radeonsi/si_dma.c
index 500247fccfd..af639a532e8 100644
--- a/src/gallium/drivers/radeonsi/si_dma.c
+++ b/src/gallium/drivers/radeonsi/si_dma.c
@@ -89,7 +89,8 @@ static void si_dma_clear_buffer(struct pipe_context *ctx,
 	unsigned i, ncopy, csize;
 	struct r600_resource *rdst = r600_resource(dst);
 
-	if (!cs || offset % 4 != 0 || size % 4 != 0) {
+	if (!cs || offset % 4 != 0 || size % 4 != 0 ||
+	    dst->flags & PIPE_RESOURCE_FLAG_SPARSE) {
 		ctx->clear_buffer(ctx, dst, offset, size, &clear_value, 4);
 		return;
 	}
@@ -233,7 +234,9 @@ static void si_dma_copy(struct pipe_context *ctx,
 	unsigned src_x, src_y;
 	unsigned dst_x = dstx, dst_y = dsty, dst_z = dstz;
 
-	if (sctx->b.dma.cs == NULL) {
+	if (sctx->b.dma.cs == NULL ||
+	    src->flags & PIPE_RESOURCE_FLAG_SPARSE ||
+	    dst->flags & PIPE_RESOURCE_FLAG_SPARSE) {
 		goto fallback;
 	}