{
struct ag71xx_ring *ring = &ag->tx_ring;
struct net_device *dev = ag->dev;
+ u32 bytes_compl = 0, pkts_compl = 0;
while (ring->curr != ring->dirty) {
u32 i = ring->dirty % ring->size;
dev->stats.tx_errors++;
}
- if (ring->buf[i].skb)
+ if (ring->buf[i].skb) {
+ bytes_compl += ring->buf[i].skb->len;
+ pkts_compl++;
dev_kfree_skb_any(ring->buf[i].skb);
-
+ }
ring->buf[i].skb = NULL;
-
ring->dirty++;
}
/* flush descriptors */
wmb();
+ netdev_completed_queue(dev, pkts_compl, bytes_compl);
}
static void ag71xx_ring_tx_init(struct ag71xx *ag)
ring->curr = 0;
ring->dirty = 0;
+ netdev_reset_queue(ag->dev);
}
static void ag71xx_ring_rx_clean(struct ag71xx *ag)
return;
for (i = 0; i < ring->size; i++)
- if (ring->buf[i].skb) {
+ if (ring->buf[i].rx_buf) {
dma_unmap_single(&ag->dev->dev, ring->buf[i].dma_addr,
- AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE);
- kfree_skb(ring->buf[i].skb);
+ AG71XX_RX_BUF_SIZE, DMA_FROM_DEVICE);
+ kfree(ring->buf[i].rx_buf);
}
}
-static int ag71xx_rx_reserve(struct ag71xx *ag)
+static int ag71xx_buffer_offset(struct ag71xx *ag)
{
- int reserve = 0;
+ int offset = NET_SKB_PAD;
- if (ag71xx_get_pdata(ag)->is_ar724x) {
- if (!ag71xx_has_ar8216(ag))
- reserve = 2;
+ /*
+ * On AR71xx/AR91xx packets must be 4-byte aligned.
+ *
+ * When using builtin AR8216 support, hardware adds a 2-byte header,
+ * so we don't need any extra alignment in that case.
+ */
+ if (!ag71xx_get_pdata(ag)->is_ar724x || ag71xx_has_ar8216(ag))
+ return offset;
- if (ag->phy_dev)
- reserve += 4 - (ag->phy_dev->pkt_align % 4);
+ return offset + NET_IP_ALIGN;
+}
- reserve %= 4;
- }
+static bool ag71xx_fill_rx_buf(struct ag71xx *ag, struct ag71xx_buf *buf,
+ int offset)
+{
+ void *data;
- return reserve + AG71XX_RX_PKT_RESERVE;
-}
+ data = kmalloc(AG71XX_RX_BUF_SIZE +
+ SKB_DATA_ALIGN(sizeof(struct skb_shared_info)),
+ GFP_ATOMIC);
+ if (!data)
+ return false;
+ buf->rx_buf = data;
+ buf->dma_addr = dma_map_single(&ag->dev->dev, data,
+ AG71XX_RX_BUF_SIZE, DMA_FROM_DEVICE);
+ buf->desc->data = (u32) buf->dma_addr + offset;
+ return true;
+}
static int ag71xx_ring_rx_init(struct ag71xx *ag)
{
struct ag71xx_ring *ring = &ag->rx_ring;
- unsigned int reserve = ag71xx_rx_reserve(ag);
unsigned int i;
int ret;
+ int offset = ag71xx_buffer_offset(ag);
ret = 0;
for (i = 0; i < ring->size; i++) {
}
for (i = 0; i < ring->size; i++) {
- struct sk_buff *skb;
- dma_addr_t dma_addr;
-
- skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE + reserve);
- if (!skb) {
+ if (!ag71xx_fill_rx_buf(ag, &ring->buf[i], offset)) {
ret = -ENOMEM;
break;
}
- skb->dev = ag->dev;
- skb_reserve(skb, reserve);
-
- dma_addr = dma_map_single(&ag->dev->dev, skb->data,
- AG71XX_RX_PKT_SIZE,
- DMA_FROM_DEVICE);
- ring->buf[i].skb = skb;
- ring->buf[i].dma_addr = dma_addr;
- ring->buf[i].desc->data = (u32) dma_addr;
ring->buf[i].desc->ctrl = DESC_EMPTY;
}
static int ag71xx_ring_rx_refill(struct ag71xx *ag)
{
struct ag71xx_ring *ring = &ag->rx_ring;
- unsigned int reserve = ag71xx_rx_reserve(ag);
unsigned int count;
+ int offset = ag71xx_buffer_offset(ag);
count = 0;
for (; ring->curr - ring->dirty > 0; ring->dirty++) {
i = ring->dirty % ring->size;
- if (ring->buf[i].skb == NULL) {
- dma_addr_t dma_addr;
- struct sk_buff *skb;
-
- skb = dev_alloc_skb(AG71XX_RX_PKT_SIZE + reserve);
- if (skb == NULL)
- break;
-
- skb_reserve(skb, reserve);
- skb->dev = ag->dev;
-
- dma_addr = dma_map_single(&ag->dev->dev, skb->data,
- AG71XX_RX_PKT_SIZE,
- DMA_FROM_DEVICE);
-
- ring->buf[i].skb = skb;
- ring->buf[i].dma_addr = dma_addr;
- ring->buf[i].desc->data = (u32) dma_addr;
- }
+ if (!ring->buf[i].rx_buf &&
+ !ag71xx_fill_rx_buf(ag, &ring->buf[i], offset))
+ break;
ring->buf[i].desc->ctrl = DESC_EMPTY;
count++;
ag71xx_ring_free(&ag->rx_ring);
ag71xx_ring_tx_clean(ag);
+ netdev_reset_queue(ag->dev);
ag71xx_ring_free(&ag->tx_ring);
}
dma_addr = dma_map_single(&dev->dev, skb->data, skb->len,
DMA_TO_DEVICE);
+ netdev_sent_queue(dev, skb->len);
ring->buf[i].skb = skb;
ring->buf[i].timestamp = jiffies;
{
struct ag71xx_ring *ring = &ag->tx_ring;
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
- int sent;
+ int sent = 0;
+ int bytes_compl = 0;
DBG("%s: processing TX ring\n", ag->dev->name);
- sent = 0;
while (ring->dirty != ring->curr) {
unsigned int i = ring->dirty % ring->size;
struct ag71xx_desc *desc = ring->buf[i].desc;
ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS);
+ bytes_compl += skb->len;
ag->dev->stats.tx_bytes += skb->len;
ag->dev->stats.tx_packets++;
DBG("%s: %d packets sent out\n", ag->dev->name, sent);
+ netdev_completed_queue(ag->dev, sent, bytes_compl);
if ((ring->curr - ring->dirty) < (ring->size * 3) / 4)
netif_wake_queue(ag->dev);
{
struct net_device *dev = ag->dev;
struct ag71xx_ring *ring = &ag->rx_ring;
+ int offset = ag71xx_buffer_offset(ag);
int done = 0;
DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n",
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
- skb = ring->buf[i].skb;
pktlen = ag71xx_desc_pktlen(desc);
pktlen -= ETH_FCS_LEN;
dma_unmap_single(&dev->dev, ring->buf[i].dma_addr,
- AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE);
+ AG71XX_RX_BUF_SIZE, DMA_FROM_DEVICE);
dev->last_rx = jiffies;
dev->stats.rx_packets++;
dev->stats.rx_bytes += pktlen;
+ skb = build_skb(ring->buf[i].rx_buf, 0);
+ if (!skb) {
+ kfree(ring->buf[i].rx_buf);
+ goto next;
+ }
+
+ skb_reserve(skb, offset);
skb_put(skb, pktlen);
+
if (ag71xx_has_ar8216(ag))
err = ag71xx_remove_ar8216_header(ag, skb, pktlen);
} else {
skb->dev = dev;
skb->ip_summed = CHECKSUM_NONE;
- if (ag->phy_dev) {
- ag->phy_dev->netif_receive_skb(skb);
- } else {
- skb->protocol = eth_type_trans(skb, dev);
- netif_receive_skb(skb);
- }
+ skb->protocol = eth_type_trans(skb, dev);
+ netif_receive_skb(skb);
}
- ring->buf[i].skb = NULL;
+next:
+ ring->buf[i].rx_buf = NULL;
done++;
ring->curr++;
ag71xx_debugfs_update_napi_stats(ag, rx_done, tx_done);
rx_ring = &ag->rx_ring;
- if (rx_ring->buf[rx_ring->dirty % rx_ring->size].skb == NULL)
+ if (rx_ring->buf[rx_ring->dirty % rx_ring->size].rx_buf == NULL)
goto oom;
status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
#endif
};
+static __devinit const char *ag71xx_get_phy_if_mode_name(phy_interface_t mode)
+{
+ switch (mode) {
+ case PHY_INTERFACE_MODE_MII:
+ return "MII";
+ case PHY_INTERFACE_MODE_GMII:
+ return "GMII";
+ case PHY_INTERFACE_MODE_RMII:
+ return "RMII";
+ case PHY_INTERFACE_MODE_RGMII:
+ return "RGMII";
+ case PHY_INTERFACE_MODE_SGMII:
+ return "SGMII";
+ default:
+ break;
+ }
+
+ return "unknown";
+}
+
+
static int __devinit ag71xx_probe(struct platform_device *pdev)
{
struct net_device *dev;
goto err_out;
}
- if (pdata->mii_bus_dev == NULL) {
+ if (pdata->mii_bus_dev == NULL && pdata->phy_mask) {
dev_err(&pdev->dev, "no MII bus device specified\n");
err = -EINVAL;
goto err_out;
goto err_free_desc;
}
- pr_info("%s: Atheros AG71xx at 0x%08lx, irq %d\n",
- dev->name, dev->base_addr, dev->irq);
+ pr_info("%s: Atheros AG71xx at 0x%08lx, irq %d, mode:%s\n",
+ dev->name, dev->base_addr, dev->irq,
+ ag71xx_get_phy_if_mode_name(pdata->phy_if_mode));
ag71xx_dump_regs(ag);
projects / openwrt.git / blobdiff