提交 090bf621 编写于 作者: J Jeff Garzik 提交者: Jeff Garzik

Merge branch 'sis190' of...

Merge branch 'sis190' of git://git.kernel.org/pub/scm/linux/kernel/git/romieu/netdev-2.6 into upstream
......@@ -212,6 +212,12 @@ enum _DescStatusBit {
THOL2 = 0x20000000,
THOL1 = 0x10000000,
THOL0 = 0x00000000,
WND = 0x00080000,
TABRT = 0x00040000,
FIFO = 0x00020000,
LINK = 0x00010000,
ColCountMask = 0x0000ffff,
/* RxDesc.status */
IPON = 0x20000000,
TCPON = 0x10000000,
......@@ -480,30 +486,23 @@ static inline void sis190_make_unusable_by_asic(struct RxDesc *desc)
desc->status = 0x0;
}
static int sis190_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
struct RxDesc *desc, u32 rx_buf_sz)
static struct sk_buff *sis190_alloc_rx_skb(struct sis190_private *tp,
struct RxDesc *desc)
{
u32 rx_buf_sz = tp->rx_buf_sz;
struct sk_buff *skb;
dma_addr_t mapping;
int ret = 0;
skb = dev_alloc_skb(rx_buf_sz);
if (!skb)
goto err_out;
*sk_buff = skb;
mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
PCI_DMA_FROMDEVICE);
skb = netdev_alloc_skb(tp->dev, rx_buf_sz);
if (likely(skb)) {
dma_addr_t mapping;
sis190_map_to_asic(desc, mapping, rx_buf_sz);
out:
return ret;
mapping = pci_map_single(tp->pci_dev, skb->data, tp->rx_buf_sz,
PCI_DMA_FROMDEVICE);
sis190_map_to_asic(desc, mapping, rx_buf_sz);
} else
sis190_make_unusable_by_asic(desc);
err_out:
ret = -ENOMEM;
sis190_make_unusable_by_asic(desc);
goto out;
return skb;
}
static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev,
......@@ -512,37 +511,41 @@ static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev,
u32 cur;
for (cur = start; cur < end; cur++) {
int ret, i = cur % NUM_RX_DESC;
unsigned int i = cur % NUM_RX_DESC;
if (tp->Rx_skbuff[i])
continue;
ret = sis190_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
tp->RxDescRing + i, tp->rx_buf_sz);
if (ret < 0)
tp->Rx_skbuff[i] = sis190_alloc_rx_skb(tp, tp->RxDescRing + i);
if (!tp->Rx_skbuff[i])
break;
}
return cur - start;
}
static inline int sis190_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
struct RxDesc *desc, int rx_buf_sz)
static bool sis190_try_rx_copy(struct sis190_private *tp,
struct sk_buff **sk_buff, int pkt_size,
dma_addr_t addr)
{
int ret = -1;
struct sk_buff *skb;
bool done = false;
if (pkt_size < rx_copybreak) {
struct sk_buff *skb;
if (pkt_size >= rx_copybreak)
goto out;
skb = dev_alloc_skb(pkt_size + NET_IP_ALIGN);
if (skb) {
skb_reserve(skb, NET_IP_ALIGN);
skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size);
*sk_buff = skb;
sis190_give_to_asic(desc, rx_buf_sz);
ret = 0;
}
}
return ret;
skb = netdev_alloc_skb(tp->dev, pkt_size + 2);
if (!skb)
goto out;
pci_dma_sync_single_for_device(tp->pci_dev, addr, pkt_size,
PCI_DMA_FROMDEVICE);
skb_reserve(skb, 2);
skb_copy_to_linear_data(skb, sk_buff[0]->data, pkt_size);
*sk_buff = skb;
done = true;
out:
return done;
}
static inline int sis190_rx_pkt_err(u32 status, struct net_device_stats *stats)
......@@ -592,9 +595,9 @@ static int sis190_rx_interrupt(struct net_device *dev,
sis190_give_to_asic(desc, tp->rx_buf_sz);
else {
struct sk_buff *skb = tp->Rx_skbuff[entry];
dma_addr_t addr = le32_to_cpu(desc->addr);
int pkt_size = (status & RxSizeMask) - 4;
void (*pci_action)(struct pci_dev *, dma_addr_t,
size_t, int) = pci_dma_sync_single_for_device;
struct pci_dev *pdev = tp->pci_dev;
if (unlikely(pkt_size > tp->rx_buf_sz)) {
net_intr(tp, KERN_INFO
......@@ -606,20 +609,18 @@ static int sis190_rx_interrupt(struct net_device *dev,
continue;
}
pci_dma_sync_single_for_cpu(tp->pci_dev,
le32_to_cpu(desc->addr), tp->rx_buf_sz,
PCI_DMA_FROMDEVICE);
if (sis190_try_rx_copy(&skb, pkt_size, desc,
tp->rx_buf_sz)) {
pci_action = pci_unmap_single;
if (sis190_try_rx_copy(tp, &skb, pkt_size, addr)) {
pci_dma_sync_single_for_device(pdev, addr,
tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
sis190_give_to_asic(desc, tp->rx_buf_sz);
} else {
pci_unmap_single(pdev, addr, tp->rx_buf_sz,
PCI_DMA_FROMDEVICE);
tp->Rx_skbuff[entry] = NULL;
sis190_make_unusable_by_asic(desc);
}
pci_action(tp->pci_dev, le32_to_cpu(desc->addr),
tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
skb_put(skb, pkt_size);
skb->protocol = eth_type_trans(skb, dev);
......@@ -658,9 +659,31 @@ static void sis190_unmap_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
memset(desc, 0x00, sizeof(*desc));
}
static inline int sis190_tx_pkt_err(u32 status, struct net_device_stats *stats)
{
#define TxErrMask (WND | TABRT | FIFO | LINK)
if (!unlikely(status & TxErrMask))
return 0;
if (status & WND)
stats->tx_window_errors++;
if (status & TABRT)
stats->tx_aborted_errors++;
if (status & FIFO)
stats->tx_fifo_errors++;
if (status & LINK)
stats->tx_carrier_errors++;
stats->tx_errors++;
return -1;
}
static void sis190_tx_interrupt(struct net_device *dev,
struct sis190_private *tp, void __iomem *ioaddr)
{
struct net_device_stats *stats = &dev->stats;
u32 pending, dirty_tx = tp->dirty_tx;
/*
* It would not be needed if queueing was allowed to be enabled
......@@ -675,15 +698,19 @@ static void sis190_tx_interrupt(struct net_device *dev,
for (; pending; pending--, dirty_tx++) {
unsigned int entry = dirty_tx % NUM_TX_DESC;
struct TxDesc *txd = tp->TxDescRing + entry;
u32 status = le32_to_cpu(txd->status);
struct sk_buff *skb;
if (le32_to_cpu(txd->status) & OWNbit)
if (status & OWNbit)
break;
skb = tp->Tx_skbuff[entry];
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
if (likely(sis190_tx_pkt_err(status, stats) == 0)) {
stats->tx_packets++;
stats->tx_bytes += skb->len;
stats->collisions += ((status & ColCountMask) - 1);
}
sis190_unmap_tx_skb(tp->pci_dev, skb, txd);
tp->Tx_skbuff[entry] = NULL;
......@@ -904,10 +931,9 @@ static void sis190_phy_task(struct work_struct *work)
mod_timer(&tp->timer, jiffies + HZ/10);
} else if (!(mdio_read_latched(ioaddr, phy_id, MII_BMSR) &
BMSR_ANEGCOMPLETE)) {
net_link(tp, KERN_WARNING "%s: PHY reset until link up.\n",
dev->name);
netif_carrier_off(dev);
mdio_write(ioaddr, phy_id, MII_BMCR, val | BMCR_RESET);
net_link(tp, KERN_WARNING "%s: auto-negotiating...\n",
dev->name);
mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT);
} else {
/* Rejoice ! */
......
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