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[PATCH] s2io: netpoll support

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This adds netpoll support for things like netconsole/kgdboe to the s2io
10GbE driver.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Brian Haley
2006-06-15 14:36:36 -04:00
committed by Jeff Garzik
parent 4b2d9cf009
commit 612eff0e37
1 changed files with 48 additions and 0 deletions
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48
drivers/net/s2io.c
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@@ -2626,6 +2626,50 @@ no_rx:
} }
#endif #endif
/**
* s2io_netpoll - Rx interrupt service handler for netpoll support
* @dev : pointer to the device structure.
* Description:
* Polling 'interrupt' - used by things like netconsole to send skbs
* without having to re-enable interrupts. It's not called while
* the interrupt routine is executing.
*/
#ifdef CONFIG_NET_POLL_CONTROLLER
static void s2io_netpoll(struct net_device *dev)
{
nic_t *nic = dev->priv;
mac_info_t *mac_control;
struct config_param *config;
XENA_dev_config_t __iomem *bar0 = nic->bar0;
u64 val64;
int i;
disable_irq(dev->irq);
atomic_inc(&nic->isr_cnt);
mac_control = &nic->mac_control;
config = &nic->config;
val64 = readq(&bar0->rx_traffic_int);
writeq(val64, &bar0->rx_traffic_int);
for (i = 0; i < config->rx_ring_num; i++)
rx_intr_handler(&mac_control->rings[i]);
for (i = 0; i < config->rx_ring_num; i++) {
if (fill_rx_buffers(nic, i) == -ENOMEM) {
DBG_PRINT(ERR_DBG, "%s:Out of memory", dev->name);
DBG_PRINT(ERR_DBG, " in Rx Netpoll!!\n");
break;
}
}
atomic_dec(&nic->isr_cnt);
enable_irq(dev->irq);
return;
}
#endif
/** /**
* rx_intr_handler - Rx interrupt handler * rx_intr_handler - Rx interrupt handler
* @nic: device private variable. * @nic: device private variable.
@@ -6967,6 +7011,10 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
dev->weight = 32; dev->weight = 32;
#endif #endif
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = s2io_netpoll;
#endif
dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM; dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
if (sp->high_dma_flag == TRUE) if (sp->high_dma_flag == TRUE)
dev->features |= NETIF_F_HIGHDMA; dev->features |= NETIF_F_HIGHDMA;