redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

pasemi_mac: basic error checking

Browse source 
pasemi_mac: basic error checking

Add some rudimentary error checking to pasemi_mac.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Olof Johansson 2007-10-02 16:24:51 -05:00 committed by David S. Miller
parent 5ecc2a5d3e
commit 69c29d8918
1 changed files with 41 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

46
drivers/net/pasemi_mac.c
View file

@ -445,6 +445,38 @@ static void pasemi_mac_restart_tx_intr(struct pasemi_mac *mac)
}
static inline void pasemi_mac_rx_error(struct pasemi_mac *mac, u64 macrx)
{
unsigned int rcmdsta, ccmdsta;
if (!netif_msg_rx_err(mac))
return;
rcmdsta = read_dma_reg(mac, PAS_DMA_RXINT_RCMDSTA(mac->dma_if));
ccmdsta = read_dma_reg(mac, PAS_DMA_RXCHAN_CCMDSTA(mac->dma_rxch));
printk(KERN_ERR "pasemi_mac: rx error. macrx %016lx, rx status %lx\n",
macrx, *mac->rx_status);
printk(KERN_ERR "pasemi_mac: rcmdsta %08x ccmdsta %08x\n",
rcmdsta, ccmdsta);
}
static inline void pasemi_mac_tx_error(struct pasemi_mac *mac, u64 mactx)
{
unsigned int cmdsta;
if (!netif_msg_tx_err(mac))
return;
cmdsta = read_dma_reg(mac, PAS_DMA_TXCHAN_TCMDSTA(mac->dma_txch));
printk(KERN_ERR "pasemi_mac: tx error. mactx 0x%016lx, "\
"tx status 0x%016lx\n", mactx, *mac->tx_status);
printk(KERN_ERR "pasemi_mac: tcmdsta 0x%08x\n", cmdsta);
}
static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
{
unsigned int n;
@ -468,10 +500,13 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit)
prefetchw(dp);
macrx = dp->macrx;
if ((macrx & XCT_MACRX_E) ||
(*mac->rx_status & PAS_STATUS_ERROR))
pasemi_mac_rx_error(mac, macrx);
if (!(macrx & XCT_MACRX_O))
break;
info = NULL;
/* We have to scan for our skb since there's no way
@ -563,6 +598,10 @@ restart:
for (i = start; i < limit; i++) {
dp = &TX_DESC(mac, i);
if ((dp->mactx & XCT_MACTX_E) ||
(*mac->tx_status & PAS_STATUS_ERROR))
pasemi_mac_tx_error(mac, dp->mactx);
if (unlikely(dp->mactx & XCT_MACTX_O))
/* Not yet transmitted */
break;
@ -607,9 +646,6 @@ static irqreturn_t pasemi_mac_rx_intr(int irq, void *data)
if (!(*mac->rx_status & PAS_STATUS_CAUSE_M))
return IRQ_NONE;
if (*mac->rx_status & PAS_STATUS_ERROR)
printk("rx_status reported error\n");
/* Don't reset packet count so it won't fire again but clear
* all others.
*/
@ -1230,7 +1266,7 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dev_err(&mac->pdev->dev, "register_netdev failed with error %d\n",
err);
goto out;
} else
} else if netif_msg_probe(mac)
printk(KERN_INFO "%s: PA Semi %s: intf %d, txch %d, rxch %d, "
"hw addr %s\n",
dev->name, mac->type == MAC_TYPE_GMAC ? "GMAC" : "XAUI",