amd/xgbe/xgbe-desc.c

123 			   struct xgbe_ring *ring)
128 	if (!ring)
131 	if (ring->rdata) {
132 		for (i = 0; i < ring->rdesc_count; i++) {
133 			rdata = XGBE_GET_DESC_DATA(ring, i);
137 		kfree(ring->rdata);
138 		ring->rdata = NULL;
141 	if (ring->rx_hdr_pa.pages) {
142 		dma_unmap_page(pdata->dev, ring->rx_hdr_pa.pages_dma,
143 			       ring->rx_hdr_pa.pages_len, DMA_FROM_DEVICE);
144 		put_page(ring->rx_hdr_pa.pages);
146 		ring->rx_hdr_pa.pages = NULL;
147 		ring->rx_hdr_pa.pages_len = 0;
148 		ring->rx_hdr_pa.pages_offset = 0;
149 		ring->rx_hdr_pa.pages_dma = 0;
152 	if (ring->rx_buf_pa.pages) {
153 		dma_unmap_page(pdata->dev, ring->rx_buf_pa.pages_dma,
154 			       ring->rx_buf_pa.pages_len, DMA_FROM_DEVICE);
155 		put_page(ring->rx_buf_pa.pages);
157 		ring->rx_buf_pa.pages = NULL;
158 		ring->rx_buf_pa.pages_len = 0;
159 		ring->rx_buf_pa.pages_offset = 0;
160 		ring->rx_buf_pa.pages_dma = 0;
163 	if (ring->rdesc) {
166 				   ring->rdesc_count),
167 				  ring->rdesc, ring->rdesc_dma);
168 		ring->rdesc = NULL;
216 			  struct xgbe_ring *ring, unsigned int rdesc_count)
220 	if (!ring)
226 	ring->rdesc_count = rdesc_count;
227 	ring->rdesc = xgbe_dma_alloc_node(pdata->dev, size, &ring->rdesc_dma,
228 					  ring->node);
229 	if (!ring->rdesc)
235 	ring->rdata = xgbe_alloc_node(size, ring->node);
236 	if (!ring->rdata)
241 		  ring->rdesc, &ring->rdesc_dma, ring->rdata, ring->node);
254 		netif_dbg(pdata, drv, pdata->netdev, "%s - Tx ring:\n",
261 				     "error initializing Tx ring\n");
265 		netif_dbg(pdata, drv, pdata->netdev, "%s - Rx ring:\n",
272 				     "error initializing Rx ring\n");
357 			      struct xgbe_ring *ring,
362 	if (!ring->rx_hdr_pa.pages) {
363 		ret = xgbe_alloc_pages(pdata, &ring->rx_hdr_pa, 0, ring->node);
368 	if (!ring->rx_buf_pa.pages) {
369 		ret = xgbe_alloc_pages(pdata, &ring->rx_buf_pa,
370 				       PAGE_ALLOC_COSTLY_ORDER, ring->node);
376 	xgbe_set_buffer_data(&rdata->rx.hdr, &ring->rx_hdr_pa,
380 	xgbe_set_buffer_data(&rdata->rx.buf, &ring->rx_buf_pa,
390 	struct xgbe_ring *ring;
400 		ring = channel->tx_ring;
401 		if (!ring)
404 		rdesc = ring->rdesc;
405 		rdesc_dma = ring->rdesc_dma;
407 		for (j = 0; j < ring->rdesc_count; j++) {
408 			rdata = XGBE_GET_DESC_DATA(ring, j);
417 		ring->cur = 0;
418 		ring->dirty = 0;
419 		memset(&ring->tx, 0, sizeof(ring->tx));
431 	struct xgbe_ring *ring;
441 		ring = channel->rx_ring;
442 		if (!ring)
445 		rdesc = ring->rdesc;
446 		rdesc_dma = ring->rdesc_dma;
448 		for (j = 0; j < ring->rdesc_count; j++) {
449 			rdata = XGBE_GET_DESC_DATA(ring, j);
454 			if (xgbe_map_rx_buffer(pdata, ring, rdata))
461 		ring->cur = 0;
462 		ring->dirty = 0;
526 	struct xgbe_ring *ring = channel->tx_ring;
535 	DBGPR("-->xgbe_map_tx_skb: cur = %d\n", ring->cur);
538 	start_index = ring->cur;
539 	cur_index = ring->cur;
541 	packet = &ring->packet_data;
551 	if ((tso && (packet->mss != ring->tx.cur_mss)) ||
552 	    (vlan && (packet->vlan_ctag != ring->tx.cur_vlan_ctag)))
554 	rdata = XGBE_GET_DESC_DATA(ring, cur_index);
575 		rdata = XGBE_GET_DESC_DATA(ring, cur_index);
600 		rdata = XGBE_GET_DESC_DATA(ring, cur_index);
634 			rdata = XGBE_GET_DESC_DATA(ring, cur_index);
642 	rdata = XGBE_GET_DESC_DATA(ring, cur_index - 1);
654 		rdata = XGBE_GET_DESC_DATA(ring, start_index++);