forked from Minki/linux
netxen: refactor netdev open close
rearrange open and close into hardware attach(), detach() and nic up() and down(). this will be used for suspend/resume subsequently. Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dhananjay Phadke
David S. Miller
parent
d32cc3d24e
commit
9f5bc7f190
@ -94,20 +94,6 @@ static struct pci_device_id netxen_pci_tbl[] __devinitdata = {
|
||||
|
||||
MODULE_DEVICE_TABLE(pci, netxen_pci_tbl);
|
||||
|
||||
/*
|
||||
* In netxen_nic_down(), we must wait for any pending callback requests into
|
||||
* netxen_watchdog_task() to complete; eg otherwise the watchdog_timer could be
|
||||
* reenabled right after it is deleted in netxen_nic_down().
|
||||
* FLUSH_SCHEDULED_WORK() does this synchronization.
|
||||
*
|
||||
* Normally, schedule_work()/flush_scheduled_work() could have worked, but
|
||||
* netxen_nic_close() is invoked with kernel rtnl lock held. netif_carrier_off()
|
||||
* call in netxen_nic_close() triggers a schedule_work(&linkwatch_work), and a
|
||||
* subsequent call to flush_scheduled_work() in netxen_nic_down() would cause
|
||||
* linkwatch_event() to be executed which also attempts to acquire the rtnl
|
||||
* lock thus causing a deadlock.
|
||||
*/
|
||||
|
||||
static struct workqueue_struct *netxen_workq;
|
||||
#define SCHEDULE_WORK(tp) queue_work(netxen_workq, tp)
|
||||
#define FLUSH_SCHEDULED_WORK() flush_workqueue(netxen_workq)
|
||||
@ -722,6 +708,163 @@ netxen_start_firmware(struct netxen_adapter *adapter)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
netxen_nic_request_irq(struct netxen_adapter *adapter)
|
||||
{
|
||||
irq_handler_t handler;
|
||||
unsigned long flags = IRQF_SAMPLE_RANDOM;
|
||||
struct net_device *netdev = adapter->netdev;
|
||||
|
||||
if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
|
||||
(adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
|
||||
printk(KERN_ERR "%s: Firmware interrupt scheme is "
|
||||
"incompatible with driver\n",
|
||||
netdev->name);
|
||||
adapter->driver_mismatch = 1;
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
|
||||
handler = netxen_msix_intr;
|
||||
else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
||||
handler = netxen_msi_intr;
|
||||
else {
|
||||
flags |= IRQF_SHARED;
|
||||
handler = netxen_intr;
|
||||
}
|
||||
adapter->irq = netdev->irq;
|
||||
|
||||
return request_irq(adapter->irq, handler,
|
||||
flags, netdev->name, adapter);
|
||||
}
|
||||
|
||||
static int
|
||||
netxen_nic_up(struct netxen_adapter *adapter, struct net_device *netdev)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = adapter->init_port(adapter, adapter->physical_port);
|
||||
if (err) {
|
||||
printk(KERN_ERR "%s: Failed to initialize port %d\n",
|
||||
netxen_nic_driver_name, adapter->portnum);
|
||||
return err;
|
||||
}
|
||||
adapter->macaddr_set(adapter, netdev->dev_addr);
|
||||
|
||||
netxen_nic_set_link_parameters(adapter);
|
||||
|
||||
netxen_set_multicast_list(netdev);
|
||||
if (adapter->set_mtu)
|
||||
adapter->set_mtu(adapter, netdev->mtu);
|
||||
|
||||
adapter->ahw.linkup = 0;
|
||||
mod_timer(&adapter->watchdog_timer, jiffies);
|
||||
|
||||
napi_enable(&adapter->napi);
|
||||
netxen_nic_enable_int(adapter);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
netxen_nic_down(struct netxen_adapter *adapter, struct net_device *netdev)
|
||||
{
|
||||
netif_carrier_off(netdev);
|
||||
netif_stop_queue(netdev);
|
||||
napi_disable(&adapter->napi);
|
||||
|
||||
if (adapter->stop_port)
|
||||
adapter->stop_port(adapter);
|
||||
|
||||
netxen_nic_disable_int(adapter);
|
||||
|
||||
netxen_release_tx_buffers(adapter);
|
||||
|
||||
FLUSH_SCHEDULED_WORK();
|
||||
del_timer_sync(&adapter->watchdog_timer);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
netxen_nic_attach(struct netxen_adapter *adapter)
|
||||
{
|
||||
struct net_device *netdev = adapter->netdev;
|
||||
struct pci_dev *pdev = adapter->pdev;
|
||||
int err, ctx, ring;
|
||||
|
||||
err = netxen_init_firmware(adapter);
|
||||
if (err != 0) {
|
||||
printk(KERN_ERR "Failed to init firmware\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
if (adapter->fw_major < 4)
|
||||
adapter->max_rds_rings = 3;
|
||||
else
|
||||
adapter->max_rds_rings = 2;
|
||||
|
||||
err = netxen_alloc_sw_resources(adapter);
|
||||
if (err) {
|
||||
printk(KERN_ERR "%s: Error in setting sw resources\n",
|
||||
netdev->name);
|
||||
return err;
|
||||
}
|
||||
|
||||
netxen_nic_clear_stats(adapter);
|
||||
|
||||
err = netxen_alloc_hw_resources(adapter);
|
||||
if (err) {
|
||||
printk(KERN_ERR "%s: Error in setting hw resources\n",
|
||||
netdev->name);
|
||||
goto err_out_free_sw;
|
||||
}
|
||||
|
||||
if (adapter->fw_major < 4) {
|
||||
adapter->crb_addr_cmd_producer =
|
||||
crb_cmd_producer[adapter->portnum];
|
||||
adapter->crb_addr_cmd_consumer =
|
||||
crb_cmd_consumer[adapter->portnum];
|
||||
|
||||
netxen_nic_update_cmd_producer(adapter, 0);
|
||||
netxen_nic_update_cmd_consumer(adapter, 0);
|
||||
}
|
||||
|
||||
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
|
||||
for (ring = 0; ring < adapter->max_rds_rings; ring++)
|
||||
netxen_post_rx_buffers(adapter, ctx, ring);
|
||||
}
|
||||
|
||||
err = netxen_nic_request_irq(adapter);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "%s: failed to setup interrupt\n",
|
||||
netdev->name);
|
||||
goto err_out_free_rxbuf;
|
||||
}
|
||||
|
||||
adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
|
||||
return 0;
|
||||
|
||||
err_out_free_rxbuf:
|
||||
netxen_release_rx_buffers(adapter);
|
||||
netxen_free_hw_resources(adapter);
|
||||
err_out_free_sw:
|
||||
netxen_free_sw_resources(adapter);
|
||||
return err;
|
||||
}
|
||||
|
||||
static void
|
||||
netxen_nic_detach(struct netxen_adapter *adapter)
|
||||
{
|
||||
if (adapter->irq)
|
||||
free_irq(adapter->irq, adapter);
|
||||
|
||||
netxen_release_rx_buffers(adapter);
|
||||
netxen_free_hw_resources(adapter);
|
||||
netxen_free_sw_resources(adapter);
|
||||
|
||||
adapter->is_up = 0;
|
||||
}
|
||||
|
||||
static int __devinit
|
||||
netxen_nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
|
||||
{
|
||||
@ -973,9 +1116,7 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
|
||||
unregister_netdev(netdev);
|
||||
|
||||
if (adapter->is_up == NETXEN_ADAPTER_UP_MAGIC) {
|
||||
netxen_free_hw_resources(adapter);
|
||||
netxen_release_rx_buffers(adapter);
|
||||
netxen_free_sw_resources(adapter);
|
||||
netxen_nic_detach(adapter);
|
||||
|
||||
if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
|
||||
netxen_p3_free_mac_list(adapter);
|
||||
@ -984,9 +1125,6 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
|
||||
if (adapter->portnum == 0)
|
||||
netxen_free_adapter_offload(adapter);
|
||||
|
||||
if (adapter->irq)
|
||||
free_irq(adapter->irq, adapter);
|
||||
|
||||
netxen_teardown_intr(adapter);
|
||||
|
||||
netxen_cleanup_pci_map(adapter);
|
||||
@ -998,125 +1136,30 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
|
||||
free_netdev(netdev);
|
||||
}
|
||||
|
||||
/*
|
||||
* Called when a network interface is made active
|
||||
* @returns 0 on success, negative value on failure
|
||||
*/
|
||||
static int netxen_nic_open(struct net_device *netdev)
|
||||
{
|
||||
struct netxen_adapter *adapter = netdev_priv(netdev);
|
||||
int err = 0;
|
||||
int ctx, ring;
|
||||
irq_handler_t handler;
|
||||
unsigned long flags = IRQF_SAMPLE_RANDOM;
|
||||
|
||||
if (adapter->driver_mismatch)
|
||||
return -EIO;
|
||||
|
||||
if (adapter->is_up != NETXEN_ADAPTER_UP_MAGIC) {
|
||||
err = netxen_init_firmware(adapter);
|
||||
if (err != 0) {
|
||||
printk(KERN_ERR "Failed to init firmware\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
if (adapter->fw_major < 4)
|
||||
adapter->max_rds_rings = 3;
|
||||
else
|
||||
adapter->max_rds_rings = 2;
|
||||
|
||||
err = netxen_alloc_sw_resources(adapter);
|
||||
if (err) {
|
||||
printk(KERN_ERR "%s: Error in setting sw resources\n",
|
||||
netdev->name);
|
||||
err = netxen_nic_attach(adapter);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
|
||||
netxen_nic_clear_stats(adapter);
|
||||
|
||||
err = netxen_alloc_hw_resources(adapter);
|
||||
if (err) {
|
||||
printk(KERN_ERR "%s: Error in setting hw resources\n",
|
||||
netdev->name);
|
||||
goto err_out_free_sw;
|
||||
}
|
||||
|
||||
if ((adapter->msi_mode != MSI_MODE_MULTIFUNC) ||
|
||||
(adapter->intr_scheme != INTR_SCHEME_PERPORT)) {
|
||||
printk(KERN_ERR "%s: Firmware interrupt scheme is "
|
||||
"incompatible with driver\n",
|
||||
netdev->name);
|
||||
adapter->driver_mismatch = 1;
|
||||
goto err_out_free_hw;
|
||||
}
|
||||
|
||||
if (adapter->fw_major < 4) {
|
||||
adapter->crb_addr_cmd_producer =
|
||||
crb_cmd_producer[adapter->portnum];
|
||||
adapter->crb_addr_cmd_consumer =
|
||||
crb_cmd_consumer[adapter->portnum];
|
||||
|
||||
netxen_nic_update_cmd_producer(adapter, 0);
|
||||
netxen_nic_update_cmd_consumer(adapter, 0);
|
||||
}
|
||||
|
||||
for (ctx = 0; ctx < MAX_RCV_CTX; ++ctx) {
|
||||
for (ring = 0; ring < adapter->max_rds_rings; ring++)
|
||||
netxen_post_rx_buffers(adapter, ctx, ring);
|
||||
}
|
||||
if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
|
||||
handler = netxen_msix_intr;
|
||||
else if (adapter->flags & NETXEN_NIC_MSI_ENABLED)
|
||||
handler = netxen_msi_intr;
|
||||
else {
|
||||
flags |= IRQF_SHARED;
|
||||
handler = netxen_intr;
|
||||
}
|
||||
adapter->irq = netdev->irq;
|
||||
err = request_irq(adapter->irq, handler,
|
||||
flags, netdev->name, adapter);
|
||||
if (err) {
|
||||
printk(KERN_ERR "request_irq failed with: %d\n", err);
|
||||
goto err_out_free_rxbuf;
|
||||
}
|
||||
|
||||
adapter->is_up = NETXEN_ADAPTER_UP_MAGIC;
|
||||
}
|
||||
|
||||
/* Done here again so that even if phantom sw overwrote it,
|
||||
* we set it */
|
||||
err = adapter->init_port(adapter, adapter->physical_port);
|
||||
if (err) {
|
||||
printk(KERN_ERR "%s: Failed to initialize port %d\n",
|
||||
netxen_nic_driver_name, adapter->portnum);
|
||||
goto err_out_free_irq;
|
||||
}
|
||||
adapter->macaddr_set(adapter, netdev->dev_addr);
|
||||
|
||||
netxen_nic_set_link_parameters(adapter);
|
||||
|
||||
netxen_set_multicast_list(netdev);
|
||||
if (adapter->set_mtu)
|
||||
adapter->set_mtu(adapter, netdev->mtu);
|
||||
|
||||
adapter->ahw.linkup = 0;
|
||||
mod_timer(&adapter->watchdog_timer, jiffies);
|
||||
|
||||
napi_enable(&adapter->napi);
|
||||
netxen_nic_enable_int(adapter);
|
||||
err = netxen_nic_up(adapter, netdev);
|
||||
if (err)
|
||||
goto err_out;
|
||||
|
||||
netif_start_queue(netdev);
|
||||
|
||||
return 0;
|
||||
|
||||
err_out_free_irq:
|
||||
free_irq(adapter->irq, adapter);
|
||||
err_out_free_rxbuf:
|
||||
netxen_release_rx_buffers(adapter);
|
||||
err_out_free_hw:
|
||||
netxen_free_hw_resources(adapter);
|
||||
err_out_free_sw:
|
||||
netxen_free_sw_resources(adapter);
|
||||
err_out:
|
||||
netxen_nic_detach(adapter);
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -1127,20 +1170,7 @@ static int netxen_nic_close(struct net_device *netdev)
|
||||
{
|
||||
struct netxen_adapter *adapter = netdev_priv(netdev);
|
||||
|
||||
netif_carrier_off(netdev);
|
||||
netif_stop_queue(netdev);
|
||||
napi_disable(&adapter->napi);
|
||||
|
||||
if (adapter->stop_port)
|
||||
adapter->stop_port(adapter);
|
||||
|
||||
netxen_nic_disable_int(adapter);
|
||||
|
||||
netxen_release_tx_buffers(adapter);
|
||||
|
||||
FLUSH_SCHEDULED_WORK();
|
||||
del_timer_sync(&adapter->watchdog_timer);
|
||||
|
||||
netxen_nic_down(adapter, netdev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user