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linux-davinci
Commit c58b8e4a authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'e1000-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 

* 'e1000-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
  e1000: FIX: Stop raw interrupts disabled nag from RT
  e1000: FIX: firmware handover bits
  e1000: FIX: be ready for incoming irq at pci_request_irq
parents afc2e82c f50393fe
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Showing with 58 additions and 46 deletions
drivers/net/e1000/e1000_main.c
View file @ c58b8e4a
......@@ -409,25 +409,21 @@ e1000_release_hw_control(struct e1000_adapter *adapter)
{
uint32_t ctrl_ext;
uint32_t swsm;
uint32_t extcnf;
/* Let firmware taken over control of h/w */
switch (adapter->hw.mac_type) {
case e1000_82571:
case e1000_82572:
case e1000_80003es2lan:
ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
break;
case e1000_82573:
swsm = E1000_READ_REG(&adapter->hw, SWSM);
E1000_WRITE_REG(&adapter->hw, SWSM,
swsm & ~E1000_SWSM_DRV_LOAD);
break;
case e1000_82571:
case e1000_82572:
case e1000_80003es2lan:
case e1000_ich8lan:
extcnf = E1000_READ_REG(&adapter->hw, CTRL_EXT);
ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
extcnf & ~E1000_CTRL_EXT_DRV_LOAD);
ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD);
break;
default:
break;
......@@ -450,26 +446,21 @@ e1000_get_hw_control(struct e1000_adapter *adapter)
{
uint32_t ctrl_ext;
uint32_t swsm;
uint32_t extcnf;
/* Let firmware know the driver has taken over */
switch (adapter->hw.mac_type) {
case e1000_82571:
case e1000_82572:
case e1000_80003es2lan:
ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
break;
case e1000_82573:
swsm = E1000_READ_REG(&adapter->hw, SWSM);
E1000_WRITE_REG(&adapter->hw, SWSM,
swsm | E1000_SWSM_DRV_LOAD);
break;
case e1000_82571:
case e1000_82572:
case e1000_80003es2lan:
case e1000_ich8lan:
extcnf = E1000_READ_REG(&adapter->hw, EXTCNF_CTRL);
E1000_WRITE_REG(&adapter->hw, EXTCNF_CTRL,
extcnf | E1000_EXTCNF_CTRL_SWFLAG);
ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
break;
default:
break;
......@@ -522,14 +513,15 @@ e1000_release_manageability(struct e1000_adapter *adapter)
}
}
int
e1000_up(struct e1000_adapter *adapter)
/**
* e1000_configure - configure the hardware for RX and TX
* @adapter = private board structure
**/
static void e1000_configure(struct e1000_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
int i;
/* hardware has been reset, we need to reload some things */
e1000_set_multi(netdev);
e1000_restore_vlan(adapter);
......@@ -548,14 +540,20 @@ e1000_up(struct e1000_adapter *adapter)
}
adapter->tx_queue_len = netdev->tx_queue_len;
}
int e1000_up(struct e1000_adapter *adapter)
{
/* hardware has been reset, we need to reload some things */
e1000_configure(adapter);
clear_bit(__E1000_DOWN, &adapter->flags);
#ifdef CONFIG_E1000_NAPI
netif_poll_enable(netdev);
netif_poll_enable(adapter->netdev);
#endif
e1000_irq_enable(adapter);
clear_bit(__E1000_DOWN, &adapter->flags);
/* fire a link change interrupt to start the watchdog */
E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC);
return 0;
......@@ -640,15 +638,15 @@ e1000_down(struct e1000_adapter *adapter)
* reschedule our watchdog timer */
set_bit(__E1000_DOWN, &adapter->flags);
#ifdef CONFIG_E1000_NAPI
netif_poll_disable(netdev);
#endif
e1000_irq_disable(adapter);
del_timer_sync(&adapter->tx_fifo_stall_timer);
del_timer_sync(&adapter->watchdog_timer);
del_timer_sync(&adapter->phy_info_timer);
#ifdef CONFIG_E1000_NAPI
netif_poll_disable(netdev);
#endif
netdev->tx_queue_len = adapter->tx_queue_len;
adapter->link_speed = 0;
adapter->link_duplex = 0;
......@@ -1410,21 +1408,17 @@ e1000_open(struct net_device *netdev)
return -EBUSY;
/* allocate transmit descriptors */
if ((err = e1000_setup_all_tx_resources(adapter)))
err = e1000_setup_all_tx_resources(adapter);
if (err)
goto err_setup_tx;
/* allocate receive descriptors */
if ((err = e1000_setup_all_rx_resources(adapter)))
goto err_setup_rx;
err = e1000_request_irq(adapter);
err = e1000_setup_all_rx_resources(adapter);
if (err)
goto err_req_irq;
goto err_setup_rx;
e1000_power_up_phy(adapter);
if ((err = e1000_up(adapter)))
goto err_up;
adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
if ((adapter->hw.mng_cookie.status &
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
......@@ -1437,12 +1431,33 @@ e1000_open(struct net_device *netdev)
e1000_check_mng_mode(&adapter->hw))
e1000_get_hw_control(adapter);
/* before we allocate an interrupt, we must be ready to handle it.
* Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
* as soon as we call pci_request_irq, so we have to setup our
* clean_rx handler before we do so. */
e1000_configure(adapter);
err = e1000_request_irq(adapter);
if (err)
goto err_req_irq;
/* From here on the code is the same as e1000_up() */
clear_bit(__E1000_DOWN, &adapter->flags);
#ifdef CONFIG_E1000_NAPI
netif_poll_enable(netdev);
#endif
e1000_irq_enable(adapter);
/* fire a link status change interrupt to start the watchdog */
E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC);
return E1000_SUCCESS;
err_up:
e1000_power_down_phy(adapter);
e1000_free_irq(adapter);
err_req_irq:
e1000_release_hw_control(adapter);
e1000_power_down_phy(adapter);
e1000_free_all_rx_resources(adapter);
err_setup_rx:
e1000_free_all_tx_resources(adapter);
......@@ -3361,12 +3376,9 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
(adapter->hw.mac_type == e1000_82573))
e1000_transfer_dhcp_info(adapter, skb);
local_irq_save(flags);
if (!spin_trylock(&tx_ring->tx_lock)) {
if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags))
/* Collision - tell upper layer to requeue */
local_irq_restore(flags);
return NETDEV_TX_LOCKED;
}
/* need: count + 2 desc gap to keep tail from touching
* head, otherwise try next time */
......
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