virtio: rename dma helpers

Following patch will introduce virtio mapping function to avoid
abusing DMA API for device that doesn't do DMA. To ease the
introduction, this patch rename "dma" to "map" for the current dma
mapping helpers.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20250821064641.5025-4-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>

Author: jasowang

drivers/net/virtio_net.c

@@ -962,16 +962,16 @@ static void virtnet_rq_unmap(struct receive_queue *rq, void *buf, u32 len)
 	if (dma->need_sync && len) {
 		offset = buf - (head + sizeof(*dma));
 
-		virtqueue_dma_sync_single_range_for_cpu(rq->vq, dma->addr,
+		virtqueue_map_sync_single_range_for_cpu(rq->vq, dma->addr,
 							offset, len,
 							DMA_FROM_DEVICE);
 	}
 
 	if (dma->ref)
 		return;
 
-	virtqueue_dma_unmap_single_attrs(rq->vq, dma->addr, dma->len,
-					 DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
+	virtqueue_unmap_single_attrs(rq->vq, dma->addr, dma->len,
+				     DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC);
 	put_page(page);
 }
 
@@ -1038,13 +1038,13 @@ static void *virtnet_rq_alloc(struct receive_queue *rq, u32 size, gfp_t gfp)
 
 		dma->len = alloc_frag->size - sizeof(*dma);
 
-		addr = virtqueue_dma_map_single_attrs(rq->vq, dma + 1,
-						      dma->len, DMA_FROM_DEVICE, 0);
-		if (virtqueue_dma_mapping_error(rq->vq, addr))
+		addr = virtqueue_map_single_attrs(rq->vq, dma + 1,
+						  dma->len, DMA_FROM_DEVICE, 0);
+		if (virtqueue_map_mapping_error(rq->vq, addr))
 			return NULL;
 
 		dma->addr = addr;
-		dma->need_sync = virtqueue_dma_need_sync(rq->vq, addr);
+		dma->need_sync = virtqueue_map_need_sync(rq->vq, addr);
 
 		/* Add a reference to dma to prevent the entire dma from
 		 * being released during error handling. This reference
@@ -5952,9 +5952,9 @@ static int virtnet_xsk_pool_enable(struct net_device *dev,
 	if (!rq->xsk_buffs)
 		return -ENOMEM;
 
-	hdr_dma = virtqueue_dma_map_single_attrs(sq->vq, &xsk_hdr, vi->hdr_len,
-						 DMA_TO_DEVICE, 0);
-	if (virtqueue_dma_mapping_error(sq->vq, hdr_dma)) {
+	hdr_dma = virtqueue_map_single_attrs(sq->vq, &xsk_hdr, vi->hdr_len,
+					     DMA_TO_DEVICE, 0);
+	if (virtqueue_map_mapping_error(sq->vq, hdr_dma)) {
 		err = -ENOMEM;
 		goto err_free_buffs;
 	}
@@ -5983,8 +5983,8 @@ static int virtnet_xsk_pool_enable(struct net_device *dev,
 err_rq:
 	xsk_pool_dma_unmap(pool, 0);
 err_xsk_map:
-	virtqueue_dma_unmap_single_attrs(rq->vq, hdr_dma, vi->hdr_len,
-					 DMA_TO_DEVICE, 0);
+	virtqueue_unmap_single_attrs(rq->vq, hdr_dma, vi->hdr_len,
+				     DMA_TO_DEVICE, 0);
 err_free_buffs:
 	kvfree(rq->xsk_buffs);
 	return err;
@@ -6011,8 +6011,8 @@ static int virtnet_xsk_pool_disable(struct net_device *dev, u16 qid)
 
 	xsk_pool_dma_unmap(pool, 0);
 
-	virtqueue_dma_unmap_single_attrs(sq->vq, sq->xsk_hdr_dma_addr,
-					 vi->hdr_len, DMA_TO_DEVICE, 0);
+	virtqueue_unmap_single_attrs(sq->vq, sq->xsk_hdr_dma_addr,
+				     vi->hdr_len, DMA_TO_DEVICE, 0);
 	kvfree(rq->xsk_buffs);
 
 	return err;