Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux

[J-linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_sdma.c

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index 115bb0c99b0ff603ac0124280bf48e1a89f10d8e..5c13c503e61f7ca72ad385dba21aa8e3a5625fd9 100644 (file)
--- 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;
+}