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Commit 6585b4a7 authored by Jeff Garzik's avatar Jeff Garzik
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Merge branch 'r6040' of... 

Merge branch 'r6040' of git://git.kernel.org/pub/scm/linux/kernel/git/romieu/netdev-2.6 into upstream-fixes
parents 179c743f ec6d2d45
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Showing with 135 additions and 98 deletions
drivers/net/r6040.c
View file @ 6585b4a7
......@@ -61,7 +61,6 @@
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (6000 * HZ / 1000)
#define TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
/* RDC MAC I/O Size */
#define R6040_IO_SIZE 256
......@@ -174,8 +173,6 @@ struct r6040_private {
struct net_device *dev;
struct mii_if_info mii_if;
struct napi_struct napi;
struct net_device_stats stats;
u16 napi_rx_running;
void __iomem *base;
};
......@@ -235,17 +232,53 @@ static void mdio_write(struct net_device *dev, int mii_id, int reg, int val)
phy_write(ioaddr, lp->phy_addr, reg, val);
}
static void r6040_tx_timeout(struct net_device *dev)
static void r6040_free_txbufs(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
struct r6040_private *lp = netdev_priv(dev);
int i;
disable_irq(dev->irq);
napi_disable(&priv->napi);
spin_lock(&priv->lock);
dev->stats.tx_errors++;
spin_unlock(&priv->lock);
for (i = 0; i < TX_DCNT; i++) {
if (lp->tx_insert_ptr->skb_ptr) {
pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf,
MAX_BUF_SIZE, PCI_DMA_TODEVICE);
dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
lp->rx_insert_ptr->skb_ptr = NULL;
}
lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
}
}
netif_stop_queue(dev);
static void r6040_free_rxbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
int i;
for (i = 0; i < RX_DCNT; i++) {
if (lp->rx_insert_ptr->skb_ptr) {
pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf,
MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
lp->rx_insert_ptr->skb_ptr = NULL;
}
lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
}
}
static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
dma_addr_t desc_dma, int size)
{
struct r6040_descriptor *desc = desc_ring;
dma_addr_t mapping = desc_dma;
while (size-- > 0) {
mapping += sizeof(sizeof(*desc));
desc->ndesc = cpu_to_le32(mapping);
desc->vndescp = desc + 1;
desc++;
}
desc--;
desc->ndesc = cpu_to_le32(desc_dma);
desc->vndescp = desc_ring;
}
/* Allocate skb buffer for rx descriptor */
......@@ -256,7 +289,7 @@ static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
descptr = lp->rx_insert_ptr;
while (lp->rx_free_desc < RX_DCNT) {
descptr->skb_ptr = dev_alloc_skb(MAX_BUF_SIZE);
descptr->skb_ptr = netdev_alloc_skb(dev, MAX_BUF_SIZE);
if (!descptr->skb_ptr)
break;
......@@ -272,6 +305,63 @@ static void rx_buf_alloc(struct r6040_private *lp, struct net_device *dev)
lp->rx_insert_ptr = descptr;
}
static void r6040_alloc_txbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
lp->tx_free_desc = TX_DCNT;
lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
}
static void r6040_alloc_rxbufs(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
lp->rx_free_desc = 0;
lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring;
r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT);
rx_buf_alloc(lp, dev);
iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
}
static void r6040_tx_timeout(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
void __iomem *ioaddr = priv->base;
printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status "
"%4.4x\n",
dev->name, ioread16(ioaddr + MIER),
mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
disable_irq(dev->irq);
napi_disable(&priv->napi);
spin_lock(&priv->lock);
/* Clear all descriptors */
r6040_free_txbufs(dev);
r6040_free_rxbufs(dev);
r6040_alloc_txbufs(dev);
r6040_alloc_rxbufs(dev);
/* Reset MAC */
iowrite16(MAC_RST, ioaddr + MCR1);
spin_unlock(&priv->lock);
enable_irq(dev->irq);
dev->stats.tx_errors++;
netif_wake_queue(dev);
}
static struct net_device_stats *r6040_get_stats(struct net_device *dev)
{
......@@ -280,11 +370,11 @@ static struct net_device_stats *r6040_get_stats(struct net_device *dev)
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
priv->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1);
priv->stats.multicast += ioread8(ioaddr + ME_CNT0);
dev->stats.rx_crc_errors += ioread8(ioaddr + ME_CNT1);
dev->stats.multicast += ioread8(ioaddr + ME_CNT0);
spin_unlock_irqrestore(&priv->lock, flags);
return &priv->stats;
return &dev->stats;
}
/* Stop RDC MAC and Free the allocated resource */
......@@ -293,7 +383,6 @@ static void r6040_down(struct net_device *dev)
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
struct pci_dev *pdev = lp->pdev;
int i;
int limit = 2048;
u16 *adrp;
u16 cmd;
......@@ -313,27 +402,12 @@ static void r6040_down(struct net_device *dev)
iowrite16(adrp[1], ioaddr + MID_0M);
iowrite16(adrp[2], ioaddr + MID_0H);
free_irq(dev->irq, dev);
/* Free RX buffer */
for (i = 0; i < RX_DCNT; i++) {
if (lp->rx_insert_ptr->skb_ptr) {
pci_unmap_single(lp->pdev, lp->rx_insert_ptr->buf,
MAX_BUF_SIZE, PCI_DMA_FROMDEVICE);
dev_kfree_skb(lp->rx_insert_ptr->skb_ptr);
lp->rx_insert_ptr->skb_ptr = NULL;
}
lp->rx_insert_ptr = lp->rx_insert_ptr->vndescp;
}
r6040_free_rxbufs(dev);
/* Free TX buffer */
for (i = 0; i < TX_DCNT; i++) {
if (lp->tx_insert_ptr->skb_ptr) {
pci_unmap_single(lp->pdev, lp->tx_insert_ptr->buf,
MAX_BUF_SIZE, PCI_DMA_TODEVICE);
dev_kfree_skb(lp->tx_insert_ptr->skb_ptr);
lp->rx_insert_ptr->skb_ptr = NULL;
}
lp->tx_insert_ptr = lp->tx_insert_ptr->vndescp;
}
r6040_free_txbufs(dev);
/* Free Descriptor memory */
pci_free_consistent(pdev, RX_DESC_SIZE, lp->rx_ring, lp->rx_ring_dma);
......@@ -432,19 +506,24 @@ static int r6040_rx(struct net_device *dev, int limit)
/* Check for errors */
err = ioread16(ioaddr + MLSR);
if (err & 0x0400) priv->stats.rx_errors++;
if (err & 0x0400)
dev->stats.rx_errors++;
/* RX FIFO over-run */
if (err & 0x8000) priv->stats.rx_fifo_errors++;
if (err & 0x8000)
dev->stats.rx_fifo_errors++;
/* RX descriptor unavailable */
if (err & 0x0080) priv->stats.rx_frame_errors++;
if (err & 0x0080)
dev->stats.rx_frame_errors++;
/* Received packet with length over buffer lenght */
if (err & 0x0020) priv->stats.rx_over_errors++;
if (err & 0x0020)
dev->stats.rx_over_errors++;
/* Received packet with too long or short */
if (err & (0x0010|0x0008)) priv->stats.rx_length_errors++;
if (err & (0x0010 | 0x0008))
dev->stats.rx_length_errors++;
/* Received packet with CRC errors */
if (err & 0x0004) {
spin_lock(&priv->lock);
priv->stats.rx_crc_errors++;
dev->stats.rx_crc_errors++;
spin_unlock(&priv->lock);
}
......@@ -469,8 +548,8 @@ static int r6040_rx(struct net_device *dev, int limit)
/* Send to upper layer */
netif_receive_skb(skb_ptr);
dev->last_rx = jiffies;
priv->dev->stats.rx_packets++;
priv->dev->stats.rx_bytes += descptr->len;
dev->stats.rx_packets++;
dev->stats.rx_bytes += descptr->len;
/* To next descriptor */
descptr = descptr->vndescp;
priv->rx_free_desc--;
......@@ -498,11 +577,13 @@ static void r6040_tx(struct net_device *dev)
/* Check for errors */
err = ioread16(ioaddr + MLSR);
if (err & 0x0200) priv->stats.rx_fifo_errors++;
if (err & (0x2000 | 0x4000)) priv->stats.tx_carrier_errors++;
if (err & 0x0200)
dev->stats.rx_fifo_errors++;
if (err & (0x2000 | 0x4000))
dev->stats.tx_carrier_errors++;
if (descptr->status & 0x8000)
break; /* Not complte */
break; /* Not complete */
skb_ptr = descptr->skb_ptr;
pci_unmap_single(priv->pdev, descptr->buf,
skb_ptr->len, PCI_DMA_TODEVICE);
......@@ -545,7 +626,6 @@ static irqreturn_t r6040_interrupt(int irq, void *dev_id)
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
u16 status;
int handled = 1;
/* Mask off RDC MAC interrupt */
iowrite16(MSK_INT, ioaddr + MIER);
......@@ -565,7 +645,7 @@ static irqreturn_t r6040_interrupt(int irq, void *dev_id)
if (status & 0x10)
r6040_tx(dev);
return IRQ_RETVAL(handled);
return IRQ_HANDLED;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
......@@ -577,53 +657,15 @@ static void r6040_poll_controller(struct net_device *dev)
}
#endif
static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
dma_addr_t desc_dma, int size)
{
struct r6040_descriptor *desc = desc_ring;
dma_addr_t mapping = desc_dma;
while (size-- > 0) {
mapping += sizeof(sizeof(*desc));
desc->ndesc = cpu_to_le32(mapping);
desc->vndescp = desc + 1;
desc++;
}
desc--;
desc->ndesc = cpu_to_le32(desc_dma);
desc->vndescp = desc_ring;
}
/* Init RDC MAC */
static void r6040_up(struct net_device *dev)
{
struct r6040_private *lp = netdev_priv(dev);
void __iomem *ioaddr = lp->base;
/* Initialize */
lp->tx_free_desc = TX_DCNT;
lp->rx_free_desc = 0;
/* Init descriptor */
lp->tx_remove_ptr = lp->tx_insert_ptr = lp->tx_ring;
lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring;
/* Init TX descriptor */
r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT);
/* Init RX descriptor */
r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT);
/* Allocate buffer for RX descriptor */
rx_buf_alloc(lp, dev);
/*
* TX and RX descriptor start registers.
* Lower 16-bits to MxD_SA0. Higher 16-bits to MxD_SA1.
*/
iowrite16(lp->tx_ring_dma, ioaddr + MTD_SA0);
iowrite16(lp->tx_ring_dma >> 16, ioaddr + MTD_SA1);
iowrite16(lp->rx_ring_dma, ioaddr + MRD_SA0);
iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
/* Initialise and alloc RX/TX buffers */
r6040_alloc_txbufs(dev);
r6040_alloc_rxbufs(dev);
/* Buffer Size Register */
iowrite16(MAX_BUF_SIZE, ioaddr + MR_BSR);
......@@ -689,8 +731,7 @@ static void r6040_timer(unsigned long data)
}
/* Timer active again */
lp->timer.expires = TIMER_WUT;
add_timer(&lp->timer);
mod_timer(&lp->timer, jiffies + round_jiffies(HZ));
}
/* Read/set MAC address routines */
......@@ -746,14 +787,10 @@ static int r6040_open(struct net_device *dev)
napi_enable(&lp->napi);
netif_start_queue(dev);
if (lp->switch_sig != ICPLUS_PHY_ID) {
/* set and active a timer process */
init_timer(&lp->timer);
lp->timer.expires = TIMER_WUT;
lp->timer.data = (unsigned long)dev;
lp->timer.function = &r6040_timer;
add_timer(&lp->timer);
}
setup_timer(&lp->timer, r6040_timer, (unsigned long) dev);
if (lp->switch_sig != ICPLUS_PHY_ID)
mod_timer(&lp->timer, jiffies + HZ);
return 0;
}
......
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