drm/vmwgfx: consolidate ttm object creation and populate

These two functions has the same code in them, create a common
helper function instead.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200804025632.3868079-2-airlied@gmail.com

drivers/gpu/drm/vmwgfx/vmwgfx_drv.h

@@ -1023,6 +1023,10 @@ extern int vmw_bo_map_dma(struct ttm_buffer_object *bo);
 extern void vmw_bo_unmap_dma(struct ttm_buffer_object *bo);
 extern const struct vmw_sg_table *
 vmw_bo_sg_table(struct ttm_buffer_object *bo);
+extern int vmw_bo_create_and_populate(struct vmw_private *dev_priv,
+				      unsigned long bo_size,
+				      struct ttm_buffer_object **bo_p);
+
 extern void vmw_piter_start(struct vmw_piter *viter,
 			    const struct vmw_sg_table *vsgt,
 			    unsigned long p_offs);

drivers/gpu/drm/vmwgfx/vmwgfx_mob.c

@@ -238,10 +238,6 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
 	unsigned long offset;
 	unsigned long bo_size;
 	struct vmw_otable *otables = batch->otables;
-	struct ttm_operation_ctx ctx = {
-		.interruptible = false,
-		.no_wait_gpu = false
-	};
 	SVGAOTableType i;
 	int ret;
 
@@ -255,24 +251,9 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
 		bo_size += otables[i].size;
 	}
 
-	ret = ttm_bo_create(&dev_priv->bdev, bo_size,
-			    ttm_bo_type_device,
-			    &vmw_sys_ne_placement,
-			    0, false, &batch->otable_bo);
-
-	if (unlikely(ret != 0))
-		goto out_no_bo;
-
-	ret = ttm_bo_reserve(batch->otable_bo, false, true, NULL);
-	BUG_ON(ret != 0);
-	ret = vmw_bo_driver.ttm_tt_populate(batch->otable_bo->ttm, &ctx);
-	if (unlikely(ret != 0))
-		goto out_unreserve;
-	ret = vmw_bo_map_dma(batch->otable_bo);
+	ret = vmw_bo_create_and_populate(dev_priv, bo_size, &batch->otable_bo);
 	if (unlikely(ret != 0))
-		goto out_unreserve;
-
-	ttm_bo_unreserve(batch->otable_bo);
+		return ret;
 
 	offset = 0;
 	for (i = 0; i < batch->num_otables; ++i) {
@@ -289,8 +270,6 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
 
 	return 0;
 
-out_unreserve:
-	ttm_bo_unreserve(batch->otable_bo);
 out_no_setup:
 	for (i = 0; i < batch->num_otables; ++i) {
 		if (batch->otables[i].enabled)
@@ -300,7 +279,6 @@ static int vmw_otable_batch_setup(struct vmw_private *dev_priv,
 
 	ttm_bo_put(batch->otable_bo);
 	batch->otable_bo = NULL;
-out_no_bo:
 	return ret;
 }
 
@@ -432,41 +410,9 @@ struct vmw_mob *vmw_mob_create(unsigned long data_pages)
 static int vmw_mob_pt_populate(struct vmw_private *dev_priv,
 			       struct vmw_mob *mob)
 {
-	int ret;
-	struct ttm_operation_ctx ctx = {
-		.interruptible = false,
-		.no_wait_gpu = false
-	};
-
 	BUG_ON(mob->pt_bo != NULL);
 
-	ret = ttm_bo_create(&dev_priv->bdev, mob->num_pages * PAGE_SIZE,
-			    ttm_bo_type_device,
-			    &vmw_sys_ne_placement,
-			    0, false, &mob->pt_bo);
-	if (unlikely(ret != 0))
-		return ret;
-
-	ret = ttm_bo_reserve(mob->pt_bo, false, true, NULL);
-
-	BUG_ON(ret != 0);
-	ret = vmw_bo_driver.ttm_tt_populate(mob->pt_bo->ttm, &ctx);
-	if (unlikely(ret != 0))
-		goto out_unreserve;
-	ret = vmw_bo_map_dma(mob->pt_bo);
-	if (unlikely(ret != 0))
-		goto out_unreserve;
-
-	ttm_bo_unreserve(mob->pt_bo);
-
-	return 0;
-
-out_unreserve:
-	ttm_bo_unreserve(mob->pt_bo);
-	ttm_bo_put(mob->pt_bo);
-	mob->pt_bo = NULL;
-
-	return ret;
+	return vmw_bo_create_and_populate(dev_priv, mob->num_pages * PAGE_SIZE, &mob->pt_bo);
 }
 
 /**

drivers/gpu/drm/vmwgfx/vmwgfx_ttm_buffer.c

@@ -819,3 +819,35 @@ struct ttm_bo_driver vmw_bo_driver = {
 	.swap_notify = vmw_swap_notify,
 	.io_mem_reserve = &vmw_ttm_io_mem_reserve,
 };
+
+int vmw_bo_create_and_populate(struct vmw_private *dev_priv,
+			       unsigned long bo_size,
+			       struct ttm_buffer_object **bo_p)
+{
+	struct ttm_operation_ctx ctx = {
+		.interruptible = false,
+		.no_wait_gpu = false
+	};
+	struct ttm_buffer_object *bo;
+	int ret;
+
+	ret = ttm_bo_create(&dev_priv->bdev, bo_size,
+			    ttm_bo_type_device,
+			    &vmw_sys_ne_placement,
+			    0, false, &bo);
+
+	if (unlikely(ret != 0))
+		return ret;
+
+	ret = ttm_bo_reserve(bo, false, true, NULL);
+	BUG_ON(ret != 0);
+	ret = vmw_bo_driver.ttm_tt_populate(bo->ttm, &ctx);
+	if (likely(ret == 0))
+		ret = vmw_bo_map_dma(bo);
+
+	ttm_bo_unreserve(bo);
+
+	if (likely(ret == 0))
+		*bo_p = bo;
+	return ret;
+}