Merge branch 'for-next' into for-linus

Signed-off-by: Takashi Iwai <[email protected]>

1 files changed, 28 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index 115bb0c99b0f..5c13c503e61f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -20,10 +20,14 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
-#include <drm/drmP.h>
+
 #include "amdgpu.h"
 #include "amdgpu_sdma.h"
 
+#define AMDGPU_CSA_SDMA_SIZE 64
+/* SDMA CSA reside in the 3rd page of CSA */
+#define AMDGPU_CSA_SDMA_OFFSET (4096 * 2)
+
 /*
  * GPU SDMA IP block helpers function.
  */
@@ -56,3 +60,26 @@ int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index)
 
 	return -EINVAL;
 }
+
+uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring,
+				     unsigned vmid)
+{
+	struct amdgpu_device *adev = ring->adev;
+	uint64_t csa_mc_addr;
+	uint32_t index = 0;
+	int r;
+
+	if (vmid == 0 || !amdgpu_mcbp)
+		return 0;
+
+	r = amdgpu_sdma_get_index_from_ring(ring, &index);
+
+	if (r || index > 31)
+		csa_mc_addr = 0;
+	else
+		csa_mc_addr = amdgpu_csa_vaddr(adev) +
+			AMDGPU_CSA_SDMA_OFFSET +
+			index * AMDGPU_CSA_SDMA_SIZE;
+
+	return csa_mc_addr;
+}