ar71xx: ag71xx: reorganize ag71xx_rx_packet function
[openwrt.git] / target / linux / ar71xx / files / drivers / net / ag71xx / ag71xx_main.c
index b1fb21f..3cf4f5e 100644 (file)
@@ -185,9 +185,11 @@ static void ag71xx_ring_rx_clean(struct ag71xx *ag)
                return;
 
        for (i = 0; i < AG71XX_RX_RING_SIZE; i++)
-               if (ring->buf[i].skb)
+               if (ring->buf[i].skb) {
+                       dma_unmap_single(&ag->dev->dev, ring->buf[i].dma_addr,
+                                        AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE);
                        kfree_skb(ring->buf[i].skb);
-
+               }
 }
 
 static int ag71xx_ring_rx_init(struct ag71xx *ag)
@@ -219,9 +221,11 @@ static int ag71xx_ring_rx_init(struct ag71xx *ag)
                skb->dev = ag->dev;
                skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
 
-               dma_addr = dma_map_single(NULL, skb->data, AG71XX_RX_PKT_SIZE,
+               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;
        }
@@ -258,11 +262,12 @@ static int ag71xx_ring_rx_refill(struct ag71xx *ag)
                        skb_reserve(skb, AG71XX_RX_PKT_RESERVE);
                        skb->dev = ag->dev;
 
-                       dma_addr = dma_map_single(NULL, skb->data,
+                       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;
                }
 
@@ -305,16 +310,117 @@ static void ag71xx_rings_cleanup(struct ag71xx *ag)
        ag71xx_ring_free(&ag->tx_ring);
 }
 
+static unsigned char *ag71xx_speed_str(struct ag71xx *ag)
+{
+       switch (ag->speed) {
+       case SPEED_1000:
+               return "1000";
+       case SPEED_100:
+               return "100";
+       case SPEED_10:
+               return "10";
+       }
+
+       return "?";
+}
+
+void ag71xx_link_adjust(struct ag71xx *ag)
+{
+       struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+       u32 cfg2;
+       u32 ifctl;
+       u32 fifo5;
+       u32 mii_speed;
+
+       if (!ag->link) {
+               netif_carrier_off(ag->dev);
+               if (netif_msg_link(ag))
+                       printk(KERN_INFO "%s: link down\n", ag->dev->name);
+               return;
+       }
+
+       cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2);
+       cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX);
+       cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0;
+
+       ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL);
+       ifctl &= ~(MAC_IFCTL_SPEED);
+
+       fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5);
+       fifo5 &= ~FIFO_CFG5_BM;
+
+       switch (ag->speed) {
+       case SPEED_1000:
+               mii_speed =  MII_CTRL_SPEED_1000;
+               cfg2 |= MAC_CFG2_IF_1000;
+               fifo5 |= FIFO_CFG5_BM;
+               break;
+       case SPEED_100:
+               mii_speed = MII_CTRL_SPEED_100;
+               cfg2 |= MAC_CFG2_IF_10_100;
+               ifctl |= MAC_IFCTL_SPEED;
+               break;
+       case SPEED_10:
+               mii_speed = MII_CTRL_SPEED_10;
+               cfg2 |= MAC_CFG2_IF_10_100;
+               break;
+       default:
+               BUG();
+               return;
+       }
+
+       if (pdata->is_ar91xx)
+               ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x00780fff);
+       else if (pdata->is_ar724x)
+               ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, pdata->fifo_cfg3);
+       else
+               ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x008001ff);
+
+       if (pdata->set_pll)
+               pdata->set_pll(ag->speed);
+
+       ag71xx_mii_ctrl_set_speed(ag, mii_speed);
+
+       ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2);
+       ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5);
+       ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl);
+
+       netif_carrier_on(ag->dev);
+       if (netif_msg_link(ag))
+               printk(KERN_INFO "%s: link up (%sMbps/%s duplex)\n",
+                       ag->dev->name,
+                       ag71xx_speed_str(ag),
+                       (DUPLEX_FULL == ag->duplex) ? "Full" : "Half");
+
+       DBG("%s: fifo_cfg0=%#x, fifo_cfg1=%#x, fifo_cfg2=%#x\n",
+               ag->dev->name,
+               ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
+               ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
+               ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
+
+       DBG("%s: fifo_cfg3=%#x, fifo_cfg4=%#x, fifo_cfg5=%#x\n",
+               ag->dev->name,
+               ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
+               ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
+               ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
+
+       DBG("%s: mac_cfg2=%#x, mac_ifctl=%#x, mii_ctrl=%#x\n",
+               ag->dev->name,
+               ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
+               ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
+               ag71xx_mii_ctrl_rr(ag));
+}
+
 static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
 {
        u32 t;
 
-       t = (((u32) mac[0]) << 24) | (((u32) mac[1]) << 16)
-         | (((u32) mac[2]) << 8) | ((u32) mac[3]);
+       t = (((u32) mac[5]) << 24) | (((u32) mac[4]) << 16)
+         | (((u32) mac[3]) << 8) | ((u32) mac[2]);
 
        ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t);
 
-       t = (((u32) mac[4]) << 24) | (((u32) mac[5]) << 16);
+       t = (((u32) mac[1]) << 24) | (((u32) mac[0]) << 16);
        ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t);
 }
 
@@ -474,15 +580,15 @@ static int ag71xx_stop(struct net_device *dev)
        struct ag71xx *ag = netdev_priv(dev);
        unsigned long flags;
 
+       netif_carrier_off(dev);
+       ag71xx_phy_stop(ag);
+
        spin_lock_irqsave(&ag->lock, flags);
 
        netif_stop_queue(dev);
 
        ag71xx_hw_stop(ag);
 
-       netif_carrier_off(dev);
-       ag71xx_phy_stop(ag);
-
        napi_disable(&ag->napi);
        del_timer_sync(&ag->oom_timer);
 
@@ -515,7 +621,8 @@ static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
                goto err_drop;
        }
 
-       dma_addr = dma_map_single(NULL, skb->data, skb->len, DMA_TO_DEVICE);
+       dma_addr = dma_map_single(&dev->dev, skb->data, skb->len,
+                                 DMA_TO_DEVICE);
 
        ring->buf[i].skb = skb;
 
@@ -537,8 +644,6 @@ static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb,
        /* enable TX engine */
        ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE);
 
-       dev->trans_start = jiffies;
-
        return NETDEV_TX_OK;
 
  err_drop:
@@ -667,6 +772,7 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                struct ag71xx_desc *desc = ring->buf[i].desc;
                struct sk_buff *skb;
                int pktlen;
+               int err;
 
                if (ag71xx_desc_empty(desc))
                        break;
@@ -682,19 +788,22 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                pktlen = ag71xx_desc_pktlen(desc);
                pktlen -= ETH_FCS_LEN;
 
-               skb_put(skb, pktlen);
-
-               skb->dev = dev;
-               skb->ip_summed = CHECKSUM_NONE;
+               dma_unmap_single(&dev->dev, ring->buf[i].dma_addr,
+                                AG71XX_RX_PKT_SIZE, DMA_FROM_DEVICE);
 
                dev->last_rx = jiffies;
                dev->stats.rx_packets++;
                dev->stats.rx_bytes += pktlen;
 
-               if (ag71xx_remove_ar8216_header(ag, skb) != 0) {
+               err = ag71xx_remove_ar8216_header(ag, skb);
+               if (err) {
                        dev->stats.rx_dropped++;
                        kfree_skb(skb);
                } else {
+                       skb_put(skb, pktlen);
+
+                       skb->dev = dev;
+                       skb->ip_summed = CHECKSUM_NONE;
                        skb->protocol = eth_type_trans(skb, dev);
                        netif_receive_skb(skb);
                }
@@ -818,6 +927,20 @@ static void ag71xx_set_multicast_list(struct net_device *dev)
        /* TODO */
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void ag71xx_netpoll(struct net_device *dev)
+{
+       disable_irq(dev->irq);
+       ag71xx_interrupt(dev->irq, dev);
+       enable_irq(dev->irq);
+}
+#endif
+
 static const struct net_device_ops ag71xx_netdev_ops = {
        .ndo_open               = ag71xx_open,
        .ndo_stop               = ag71xx_stop,
@@ -828,6 +951,9 @@ static const struct net_device_ops ag71xx_netdev_ops = {
        .ndo_change_mtu         = eth_change_mtu,
        .ndo_set_mac_address    = eth_mac_addr,
        .ndo_validate_addr      = eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+       .ndo_poll_controller    = ag71xx_netpoll,
+#endif
 };
 
 static int __init ag71xx_probe(struct platform_device *pdev)