drm/vmwgfx: stop using ttm_bo_create v2

[ Upstream commit b254557cb244e2c18e59ee1cc2293128c52d2473 ]

Implement in the driver instead since it is the only user of that function.

v2: fix usage of ttm_bo_init_reserved

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Link: https://patchwork.freedesktop.org/patch/391614/?series=81973&rev=1
Stable-dep-of: 517621b70600 ("drm/vmwgfx: Fix possible null pointer derefence with invalid contexts")
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/gpu/drm/vmwgfx/vmwgfx_bo.c

@@ -487,6 +487,49 @@ static void vmw_user_bo_destroy(struct ttm_buffer_object *bo)
 	ttm_prime_object_kfree(vmw_user_bo, prime);
 }
 
+/**
+ * vmw_bo_create_kernel - Create a pinned BO for internal kernel use.
+ *
+ * @dev_priv: Pointer to the device private struct
+ * @size: size of the BO we need
+ * @placement: where to put it
+ * @p_bo: resulting BO
+ *
+ * Creates and pin a simple BO for in kernel use.
+ */
+int vmw_bo_create_kernel(struct vmw_private *dev_priv, unsigned long size,
+			 struct ttm_placement *placement,
+			 struct ttm_buffer_object **p_bo)
+{
+	unsigned npages = PAGE_ALIGN(size) >> PAGE_SHIFT;
+	struct ttm_operation_ctx ctx = { false, false };
+	struct ttm_buffer_object *bo;
+	size_t acc_size;
+	int ret;
+
+	bo = kzalloc(sizeof(*bo), GFP_KERNEL);
+	if (unlikely(!bo))
+		return -ENOMEM;
+
+	acc_size = ttm_round_pot(sizeof(*bo));
+	acc_size += ttm_round_pot(npages * sizeof(void *));
+	acc_size += ttm_round_pot(sizeof(struct ttm_tt));
+	ret = ttm_bo_init_reserved(&dev_priv->bdev, bo, size,
+				   ttm_bo_type_device, placement, 0,
+				   &ctx, acc_size, NULL, NULL, NULL);
+	if (unlikely(ret))
+		goto error_free;
+
+	ttm_bo_pin(bo);
+	ttm_bo_unreserve(bo);
+	*p_bo = bo;
+
+	return 0;
+
+error_free:
+	kfree(bo);
+	return ret;
+}
 
 /**
  * vmw_bo_init - Initialize a vmw buffer object

drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf.c

@@ -1245,9 +1245,9 @@ int vmw_cmdbuf_set_pool_size(struct vmw_cmdbuf_man *man,
 		    !dev_priv->has_mob)
 			return -ENOMEM;
 
-		ret = ttm_bo_create(&dev_priv->bdev, size, ttm_bo_type_device,
+		ret = vmw_bo_create_kernel(dev_priv, size,
-				    &vmw_mob_ne_placement, 0, false,
+					   &vmw_mob_placement,
-				    &man->cmd_space);
+					   &man->cmd_space);
 		if (ret)
 			return ret;
 

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -845,6 +845,10 @@ extern void vmw_bo_get_guest_ptr(const struct ttm_buffer_object *buf,
 				 SVGAGuestPtr *ptr);
 extern void vmw_bo_pin_reserved(struct vmw_buffer_object *bo, bool pin);
 extern void vmw_bo_bo_free(struct ttm_buffer_object *bo);
+extern int vmw_bo_create_kernel(struct vmw_private *dev_priv,
+				unsigned long size,
+				struct ttm_placement *placement,
+				struct ttm_buffer_object **p_bo);
 extern int vmw_bo_init(struct vmw_private *dev_priv,
 		       struct vmw_buffer_object *vmw_bo,
 		       size_t size, struct ttm_placement *placement,

drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c

@@ -817,11 +817,9 @@ int vmw_bo_create_and_populate(struct vmw_private *dev_priv,
 	struct ttm_buffer_object *bo;
 	int ret;
 
-	ret = ttm_bo_create(&dev_priv->bdev, bo_size,
+	ret = vmw_bo_create_kernel(dev_priv, bo_size,
-			    ttm_bo_type_device,
+				   &vmw_sys_placement,
-			    &vmw_sys_ne_placement,
+				   &bo);
-			    0, false, &bo);
-
 	if (unlikely(ret != 0))
 		return ret;