drm/amdgpu: add basics for SDMA page queue support

Just the common helper and a new ring in the SDMA instance.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
index bc9244b..0fb9907 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -34,11 +34,9 @@ struct amdgpu_sdma_instance * amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
        int i;
 
        for (i = 0; i < adev->sdma.num_instances; i++)
-               if (&adev->sdma.instance[i].ring == ring)
-                       break;
+               if (ring == &adev->sdma.instance[i].ring ||
+                   ring == &adev->sdma.instance[i].page)
+                       return &adev->sdma.instance[i];
 
-       if (i < AMDGPU_MAX_SDMA_INSTANCES)
-               return &adev->sdma.instance[i];
-       else
-               return NULL;
+       return NULL;
 }

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
index 500113e..556db42 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h
@@ -41,6 +41,7 @@ struct amdgpu_sdma_instance {
        uint32_t                feature_version;
 
        struct amdgpu_ring      ring;
+       struct amdgpu_ring      page;
        bool                    burst_nop;
 };