Merge master.kernel.org:/pub/scm/linux/kernel/git/herbert/crypto-2.6

[linux-2.6-omap-h63xx.git] / drivers / net / via-rhine.c

diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index a9b2150909d60f03c42690a2ddb645d0d87dd17d..c80a4f1d5f7a958dc42e29856780925e2249a36e 100644 (file)
--- a/drivers/net/via-rhine.c
+++ b/drivers/net/via-rhine.c
@@ -129,6 +129,7 @@
        - Massive clean-up
        - Rewrite PHY, media handling (remove options, full_duplex, backoff)
        - Fix Tx engine race for good
+       - Craig Brind: Zero padded aligned buffers for short packets.
 
 */
 
@@ -469,7 +470,7 @@ struct rhine_private {
        struct sk_buff *tx_skbuff[TX_RING_SIZE];
        dma_addr_t tx_skbuff_dma[TX_RING_SIZE];
 
-       /* Tx bounce buffers */
+       /* Tx bounce buffers (Rhine-I only) */
        unsigned char *tx_buf[TX_RING_SIZE];
        unsigned char *tx_bufs;
        dma_addr_t tx_bufs_dma;
@@ -490,8 +491,6 @@ struct rhine_private {
        u8 tx_thresh, rx_thresh;
 
        struct mii_if_info mii_if;
-       struct work_struct tx_timeout_task;
-       struct work_struct check_media_task;
        void __iomem *base;
 };
 
@@ -499,8 +498,6 @@ static int  mdio_read(struct net_device *dev, int phy_id, int location);
 static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
 static int  rhine_open(struct net_device *dev);
 static void rhine_tx_timeout(struct net_device *dev);
-static void rhine_tx_timeout_task(struct net_device *dev);
-static void rhine_check_media_task(struct net_device *dev);
 static int  rhine_start_tx(struct sk_buff *skb, struct net_device *dev);
 static irqreturn_t rhine_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
 static void rhine_tx(struct net_device *dev);
@@ -855,12 +852,6 @@ static int __devinit rhine_init_one(struct pci_dev *pdev,
        if (rp->quirks & rqRhineI)
                dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM;
 
-       INIT_WORK(&rp->tx_timeout_task,
-                 (void (*)(void *))rhine_tx_timeout_task, dev);
-
-       INIT_WORK(&rp->check_media_task,
-                 (void (*)(void *))rhine_check_media_task, dev);
-
        /* dev->name not defined before register_netdev()! */
        rc = register_netdev(dev);
        if (rc)
@@ -1043,7 +1034,8 @@ static void alloc_tbufs(struct net_device* dev)
                rp->tx_ring[i].desc_length = cpu_to_le32(TXDESC);
                next += sizeof(struct tx_desc);
                rp->tx_ring[i].next_desc = cpu_to_le32(next);
-               rp->tx_buf[i] = &rp->tx_bufs[i * PKT_BUF_SZ];
+               if (rp->quirks & rqRhineI)
+                       rp->tx_buf[i] = &rp->tx_bufs[i * PKT_BUF_SZ];
        }
        rp->tx_ring[i-1].next_desc = cpu_to_le32(rp->tx_ring_dma);
 
@@ -1091,7 +1083,7 @@ static void rhine_check_media(struct net_device *dev, unsigned int init_media)
 }
 
 /* Called after status of force_media possibly changed */
-void rhine_set_carrier(struct mii_if_info *mii)
+static void rhine_set_carrier(struct mii_if_info *mii)
 {
        if (mii->force_media) {
                /* autoneg is off: Link is always assumed to be up */
@@ -1106,11 +1098,6 @@ void rhine_set_carrier(struct mii_if_info *mii)
                       netif_carrier_ok(mii->dev));
 }
 
-static void rhine_check_media_task(struct net_device *dev)
-{
-       rhine_check_media(dev, 0);
-}
-
 static void init_registers(struct net_device *dev)
 {
        struct rhine_private *rp = netdev_priv(dev);
@@ -1164,8 +1151,8 @@ static void rhine_disable_linkmon(void __iomem *ioaddr, u32 quirks)
        if (quirks & rqRhineI) {
                iowrite8(0x01, ioaddr + MIIRegAddr);    // MII_BMSR
 
-               /* Do not call from ISR! */
-               msleep(1);
+               /* Can be called from ISR. Evil. */
+               mdelay(1);
 
                /* 0x80 must be set immediately before turning it off */
                iowrite8(0x80, ioaddr + MIICmd);
@@ -1253,16 +1240,6 @@ static int rhine_open(struct net_device *dev)
 }
 
 static void rhine_tx_timeout(struct net_device *dev)
-{
-       struct rhine_private *rp = netdev_priv(dev);
-
-       /*
-        * Move bulk of work outside of interrupt context
-        */
-       schedule_work(&rp->tx_timeout_task);
-}
-
-static void rhine_tx_timeout_task(struct net_device *dev)
 {
        struct rhine_private *rp = netdev_priv(dev);
        void __iomem *ioaddr = rp->base;
@@ -1307,11 +1284,8 @@ static int rhine_start_tx(struct sk_buff *skb, struct net_device *dev)
        /* Calculate the next Tx descriptor entry. */
        entry = rp->cur_tx % TX_RING_SIZE;
 
-       if (skb->len < ETH_ZLEN) {
-               skb = skb_padto(skb, ETH_ZLEN);
-               if (skb == NULL)
-                       return 0;
-       }
+       if (skb_padto(skb, ETH_ZLEN))
+               return 0;
 
        rp->tx_skbuff[entry] = skb;
 
@@ -1325,7 +1299,12 @@ static int rhine_start_tx(struct sk_buff *skb, struct net_device *dev)
                        rp->stats.tx_dropped++;
                        return 0;
                }
+
+               /* Padding is not copied and so must be redone. */
                skb_copy_and_csum_dev(skb, rp->tx_buf[entry]);
+               if (skb->len < ETH_ZLEN)
+                       memset(rp->tx_buf[entry] + skb->len, 0,
+                              ETH_ZLEN - skb->len);
                rp->tx_skbuff_dma[entry] = 0;
                rp->tx_ring[entry].addr = cpu_to_le32(rp->tx_bufs_dma +
                                                      (rp->tx_buf[entry] -
@@ -1670,7 +1649,7 @@ static void rhine_error(struct net_device *dev, int intr_status)
        spin_lock(&rp->lock);
 
        if (intr_status & IntrLinkChange)
-               schedule_work(&rp->check_media_task);
+               rhine_check_media(dev, 0);
        if (intr_status & IntrStatsMax) {
                rp->stats.rx_crc_errors += ioread16(ioaddr + RxCRCErrs);
                rp->stats.rx_missed_errors += ioread16(ioaddr + RxMissed);
@@ -1920,9 +1899,6 @@ static int rhine_close(struct net_device *dev)
        spin_unlock_irq(&rp->lock);
 
        free_irq(rp->pdev->irq, dev);
-
-       flush_scheduled_work();
-
        free_rbufs(dev);
        free_tbufs(dev);
        free_ring(dev);