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cxgb3 - Add EEH support 

Add PCI recovery support

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Divy Le Ray 2007-11-16 11:21:55 -08:00 committed by David S. Miller
parent 67d92ab765
commit 91a6b50cf6
1 changed files with 107 additions and 0 deletions
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107
drivers/net/cxgb3/cxgb3_main.c
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@ -2316,6 +2316,112 @@ void t3_fatal_err(struct adapter *adapter)
}
/**
* t3_io_error_detected - called when PCI error is detected
* @pdev: Pointer to PCI device
* @state: The current pci connection state
*
* This function is called after a PCI bus error affecting
* this device has been detected.
*/
static pci_ers_result_t t3_io_error_detected(struct pci_dev *pdev,
pci_channel_state_t state)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct port_info *pi = netdev_priv(dev);
struct adapter *adapter = pi->adapter;
int i;
/* Stop all ports */
for_each_port(adapter, i) {
struct net_device *netdev = adapter->port[i];
if (netif_running(netdev))
cxgb_close(netdev);
}
if (is_offload(adapter) &&
test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map))
offload_close(&adapter->tdev);
/* Free sge resources */
t3_free_sge_resources(adapter);
adapter->flags &= ~FULL_INIT_DONE;
pci_disable_device(pdev);
/* Request a slot slot reset. */
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* t3_io_slot_reset - called after the pci bus has been reset.
* @pdev: Pointer to PCI device
*
* Restart the card from scratch, as if from a cold-boot.
*/
static pci_ers_result_t t3_io_slot_reset(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct port_info *pi = netdev_priv(dev);
struct adapter *adapter = pi->adapter;
if (pci_enable_device(pdev)) {
dev_err(&pdev->dev,
"Cannot re-enable PCI device after reset.\n");
return PCI_ERS_RESULT_DISCONNECT;
}
pci_set_master(pdev);
t3_prep_adapter(adapter, adapter->params.info, 1);
return PCI_ERS_RESULT_RECOVERED;
}
/**
* t3_io_resume - called when traffic can start flowing again.
* @pdev: Pointer to PCI device
*
* This callback is called when the error recovery driver tells us that
* its OK to resume normal operation.
*/
static void t3_io_resume(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct port_info *pi = netdev_priv(dev);
struct adapter *adapter = pi->adapter;
int i;
/* Restart the ports */
for_each_port(adapter, i) {
struct net_device *netdev = adapter->port[i];
if (netif_running(netdev)) {
if (cxgb_open(netdev)) {
dev_err(&pdev->dev,
"can't bring device back up"
" after reset\n");
continue;
}
netif_device_attach(netdev);
}
}
if (is_offload(adapter)) {
__set_bit(OFFLOAD_DEVMAP_BIT, &adapter->registered_device_map);
if (offload_open(dev))
printk(KERN_WARNING
"Could not bring back offload capabilities\n");
}
}
static struct pci_error_handlers t3_err_handler = {
.error_detected = t3_io_error_detected,
.slot_reset = t3_io_slot_reset,
.resume = t3_io_resume,
};
static int __devinit cxgb_enable_msix(struct adapter *adap)
{
struct msix_entry entries[SGE_QSETS + 1];
@ -2616,6 +2722,7 @@ static struct pci_driver driver = {
.id_table = cxgb3_pci_tbl,
.probe = init_one,
.remove = __devexit_p(remove_one),
.err_handler = &t3_err_handler,
};
static int __init cxgb3_init_module(void)