1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index c5aa465231c4..dfbf0273585f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -248,3 +248,69 @@ int amdgpu_gfx_kiq_init(struct amdgpu_device *adev,
 
 	return 0;
 }
+
+/* create MQD for each compute queue */
+int amdgpu_gfx_compute_mqd_sw_init(struct amdgpu_device *adev,
+				   unsigned mqd_size)
+{
+	struct amdgpu_ring *ring = NULL;
+	int r, i;
+
+	/* create MQD for KIQ */
+	ring = &adev->gfx.kiq.ring;
+	if (!ring->mqd_obj) {
+		r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
+					    AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
+					    &ring->mqd_gpu_addr, &ring->mqd_ptr);
+		if (r) {
+			dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
+			return r;
+		}
+
+		/* prepare MQD backup */
+		adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS] = kmalloc(mqd_size, GFP_KERNEL);
+		if (!adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS])
+				dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
+	}
+
+	/* create MQD for each KCQ */
+	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
+		ring = &adev->gfx.compute_ring[i];
+		if (!ring->mqd_obj) {
+			r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
+						    AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
+						    &ring->mqd_gpu_addr, &ring->mqd_ptr);
+			if (r) {
+				dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
+				return r;
+			}
+
+			/* prepare MQD backup */
+			adev->gfx.mec.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
+			if (!adev->gfx.mec.mqd_backup[i])
+				dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
+		}
+	}
+
+	return 0;
+}
+
+void amdgpu_gfx_compute_mqd_sw_fini(struct amdgpu_device *adev)
+{
+	struct amdgpu_ring *ring = NULL;
+	int i;
+
+	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
+		ring = &adev->gfx.compute_ring[i];
+		kfree(adev->gfx.mec.mqd_backup[i]);
+		amdgpu_bo_free_kernel(&ring->mqd_obj,
+				      &ring->mqd_gpu_addr,
+				      &ring->mqd_ptr);
+	}
+
+	ring = &adev->gfx.kiq.ring;
+	kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
+	amdgpu_bo_free_kernel(&ring->mqd_obj,
+			      &ring->mqd_gpu_addr,
+			      &ring->mqd_ptr);
+}