diff options
| -rw-r--r-- | drivers/net/forcedeth.c | 78 |
1 files changed, 74 insertions, 4 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c index 5472d12122b..3b8087159b6 100644 --- a/drivers/net/forcedeth.c +++ b/drivers/net/forcedeth.c @@ -111,6 +111,7 @@ * 0.56: 22 Mar 2006: Additional ethtool config and moduleparam support. * 0.57: 14 May 2006: Mac address set in probe/remove and order corrections. * 0.58: 30 Oct 2006: Added support for sideband management unit. + * 0.59: 30 Oct 2006: Added support for recoverable error. * * Known bugs: * We suspect that on some hardware no TX done interrupts are generated. @@ -127,7 +128,7 @@ #else #define DRIVERNAPI #endif -#define FORCEDETH_VERSION "0.58" +#define FORCEDETH_VERSION "0.59" #define DRV_NAME "forcedeth" #include <linux/module.h> @@ -180,7 +181,7 @@ enum { NvRegIrqStatus = 0x000, #define NVREG_IRQSTAT_MIIEVENT 0x040 -#define NVREG_IRQSTAT_MASK 0x1ff +#define NVREG_IRQSTAT_MASK 0x81ff NvRegIrqMask = 0x004, #define NVREG_IRQ_RX_ERROR 0x0001 #define NVREG_IRQ_RX 0x0002 @@ -191,15 +192,16 @@ enum { #define NVREG_IRQ_LINK 0x0040 #define NVREG_IRQ_RX_FORCED 0x0080 #define NVREG_IRQ_TX_FORCED 0x0100 +#define NVREG_IRQ_RECOVER_ERROR 0x8000 #define NVREG_IRQMASK_THROUGHPUT 0x00df #define NVREG_IRQMASK_CPU 0x0040 #define NVREG_IRQ_TX_ALL (NVREG_IRQ_TX_ERR|NVREG_IRQ_TX_OK|NVREG_IRQ_TX_FORCED) #define NVREG_IRQ_RX_ALL (NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_RX_FORCED) -#define NVREG_IRQ_OTHER (NVREG_IRQ_TIMER|NVREG_IRQ_LINK) +#define NVREG_IRQ_OTHER (NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RECOVER_ERROR) #define NVREG_IRQ_UNKNOWN (~(NVREG_IRQ_RX_ERROR|NVREG_IRQ_RX|NVREG_IRQ_RX_NOBUF|NVREG_IRQ_TX_ERR| \ NVREG_IRQ_TX_OK|NVREG_IRQ_TIMER|NVREG_IRQ_LINK|NVREG_IRQ_RX_FORCED| \ - NVREG_IRQ_TX_FORCED)) + NVREG_IRQ_TX_FORCED|NVREG_IRQ_RECOVER_ERROR)) NvRegUnknownSetupReg6 = 0x008, #define NVREG_UNKSETUP6_VAL 3 @@ -718,6 +720,7 @@ struct fe_priv { unsigned int phy_model; u16 gigabit; int intr_test; + int recover_error; /* General data: RO fields */ dma_addr_t ring_addr; @@ -2455,6 +2458,23 @@ static irqreturn_t nv_nic_irq(int foo, void *data) printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n", dev->name, events); } + if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) { + spin_lock(&np->lock); + /* disable interrupts on the nic */ + if (!(np->msi_flags & NV_MSI_X_ENABLED)) + writel(0, base + NvRegIrqMask); + else + writel(np->irqmask, base + NvRegIrqMask); + pci_push(base); + + if (!np->in_shutdown) { + np->nic_poll_irq = np->irqmask; + np->recover_error = 1; + mod_timer(&np->nic_poll, jiffies + POLL_WAIT); + } + spin_unlock(&np->lock); + break; + } #ifdef CONFIG_FORCEDETH_NAPI if (events & NVREG_IRQ_RX_ALL) { netif_rx_schedule(dev); @@ -2685,6 +2705,20 @@ static irqreturn_t nv_nic_irq_other(int foo, void *data) spin_unlock_irqrestore(&np->lock, flags); np->link_timeout = jiffies + LINK_TIMEOUT; } + if (events & NVREG_IRQ_RECOVER_ERROR) { + spin_lock_irq(&np->lock); + /* disable interrupts on the nic */ + writel(NVREG_IRQ_OTHER, base + NvRegIrqMask); + pci_push(base); + + if (!np->in_shutdown) { + np->nic_poll_irq |= NVREG_IRQ_OTHER; + np->recover_error = 1; + mod_timer(&np->nic_poll, jiffies + POLL_WAIT); + } + spin_unlock_irq(&np->lock); + break; + } if (events & (NVREG_IRQ_UNKNOWN)) { printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n", dev->name, events); @@ -2914,6 +2948,42 @@ static void nv_do_nic_poll(unsigned long data) } np->nic_poll_irq = 0; + if (np->recover_error) { + np->recover_error = 0; + printk(KERN_INFO "forcedeth: MAC in recoverable error state\n"); + if (netif_running(dev)) { + netif_tx_lock_bh(dev); + spin_lock(&np->lock); + /* stop engines */ + nv_stop_rx(dev); + nv_stop_tx(dev); + nv_txrx_reset(dev); + /* drain rx queue */ + nv_drain_rx(dev); + nv_drain_tx(dev); + /* reinit driver view of the rx queue */ + set_bufsize(dev); + if (nv_init_ring(dev)) { + if (!np->in_shutdown) + mod_timer(&np->oom_kick, jiffies + OOM_REFILL); + } + /* reinit nic view of the rx queue */ + writel(np->rx_buf_sz, base + NvRegOffloadConfig); + setup_hw_rings(dev, NV_SETUP_RX_RING | NV_SETUP_TX_RING); + writel( ((np->rx_ring_size-1) << NVREG_RINGSZ_RXSHIFT) + ((np->tx_ring_size-1) << NVREG_RINGSZ_TXSHIFT), + base + NvRegRingSizes); + pci_push(base); + writel(NVREG_TXRXCTL_KICK|np->txrxctl_bits, get_hwbase(dev) + NvRegTxRxControl); + pci_push(base); + + /* restart rx engine */ + nv_start_rx(dev); + nv_start_tx(dev); + spin_unlock(&np->lock); + netif_tx_unlock_bh(dev); + } + } + /* FIXME: Do we need synchronize_irq(dev->irq) here? */ writel(mask, base + NvRegIrqMask); |