Commit c866b7ea authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by David S. Miller

tg3: Do not use legacy PCI power management

The tg3 driver uses the legacy PCI power management, so it has to do
some PCI-specific things in its ->suspend() and ->resume() callbacks,
which isn't necessary and should better be done by the PCI
sybsystem-level power management code.

Convert tg3 to the new PCI power management framework and make it
let the PCI subsystem take care of all the PCI-specific aspects of
device handling during system power transitions.

Tested on HP nx6325 with a NetXtreme BCM5788 adapter.
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f5260f02
No related merge requests found
......@@ -2551,39 +2551,35 @@ static void __tg3_set_mac_addr(struct tg3 *tp, int skip_mac_1)
tw32(MAC_TX_BACKOFF_SEED, addr_high);
}
static int tg3_set_power_state(struct tg3 *tp, pci_power_t state)
static void tg3_enable_register_access(struct tg3 *tp)
{
u32 misc_host_ctrl;
bool device_should_wake, do_low_power;
/* Make sure register accesses (indirect or otherwise)
* will function correctly.
/*
* Make sure register accesses (indirect or otherwise) will function
* correctly.
*/
pci_write_config_dword(tp->pdev,
TG3PCI_MISC_HOST_CTRL,
tp->misc_host_ctrl);
TG3PCI_MISC_HOST_CTRL, tp->misc_host_ctrl);
}
switch (state) {
case PCI_D0:
pci_enable_wake(tp->pdev, state, false);
pci_set_power_state(tp->pdev, PCI_D0);
static int tg3_power_up(struct tg3 *tp)
{
tg3_enable_register_access(tp);
/* Switch out of Vaux if it is a NIC */
if (tp->tg3_flags2 & TG3_FLG2_IS_NIC)
tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl, 100);
pci_set_power_state(tp->pdev, PCI_D0);
return 0;
/* Switch out of Vaux if it is a NIC */
if (tp->tg3_flags2 & TG3_FLG2_IS_NIC)
tw32_wait_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl, 100);
case PCI_D1:
case PCI_D2:
case PCI_D3hot:
break;
return 0;
}
default:
netdev_err(tp->dev, "Invalid power state (D%d) requested\n",
state);
return -EINVAL;
}
static int tg3_power_down_prepare(struct tg3 *tp)
{
u32 misc_host_ctrl;
bool device_should_wake, do_low_power;
tg3_enable_register_access(tp);
/* Restore the CLKREQ setting. */
if (tp->tg3_flags3 & TG3_FLG3_CLKREQ_BUG) {
......@@ -2602,8 +2598,7 @@ static int tg3_set_power_state(struct tg3 *tp, pci_power_t state)
tw32(TG3PCI_MISC_HOST_CTRL,
misc_host_ctrl | MISC_HOST_CTRL_MASK_PCI_INT);
device_should_wake = pci_pme_capable(tp->pdev, state) &&
device_may_wakeup(&tp->pdev->dev) &&
device_should_wake = device_may_wakeup(&tp->pdev->dev) &&
(tp->tg3_flags & TG3_FLAG_WOL_ENABLE);
if (tp->tg3_flags3 & TG3_FLG3_USE_PHYLIB) {
......@@ -2823,13 +2818,15 @@ static int tg3_set_power_state(struct tg3 *tp, pci_power_t state)
tg3_write_sig_post_reset(tp, RESET_KIND_SHUTDOWN);
if (device_should_wake)
pci_enable_wake(tp->pdev, state, true);
return 0;
}
/* Finally, set the new power state. */
pci_set_power_state(tp->pdev, state);
static void tg3_power_down(struct tg3 *tp)
{
tg3_power_down_prepare(tp);
return 0;
pci_wake_from_d3(tp->pdev, tp->tg3_flags & TG3_FLAG_WOL_ENABLE);
pci_set_power_state(tp->pdev, PCI_D3hot);
}
static void tg3_aux_stat_to_speed_duplex(struct tg3 *tp, u32 val, u16 *speed, u8 *duplex)
......@@ -9137,7 +9134,7 @@ static int tg3_open(struct net_device *dev)
netif_carrier_off(tp->dev);
err = tg3_set_power_state(tp, PCI_D0);
err = tg3_power_up(tp);
if (err)
return err;
......@@ -9302,7 +9299,7 @@ static int tg3_close(struct net_device *dev)
tg3_free_consistent(tp);
tg3_set_power_state(tp, PCI_D3hot);
tg3_power_down(tp);
netif_carrier_off(tp->dev);
......@@ -11104,7 +11101,7 @@ static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
struct tg3 *tp = netdev_priv(dev);
if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
tg3_set_power_state(tp, PCI_D0);
tg3_power_up(tp);
memset(data, 0, sizeof(u64) * TG3_NUM_TEST);
......@@ -11172,7 +11169,7 @@ static void tg3_self_test(struct net_device *dev, struct ethtool_test *etest,
tg3_phy_start(tp);
}
if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
tg3_set_power_state(tp, PCI_D3hot);
tg3_power_down(tp);
}
......@@ -13621,7 +13618,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
(tp->tg3_flags3 & TG3_FLG3_5717_PLUS))
tp->tg3_flags |= TG3_FLAG_CPMU_PRESENT;
/* Set up tp->grc_local_ctrl before calling tg3_set_power_state().
/* Set up tp->grc_local_ctrl before calling tg_power_up().
* GPIO1 driven high will bring 5700's external PHY out of reset.
* It is also used as eeprom write protect on LOMs.
*/
......@@ -13652,7 +13649,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
}
/* Force the chip into D0. */
err = tg3_set_power_state(tp, PCI_D0);
err = tg3_power_up(tp);
if (err) {
dev_err(&tp->pdev->dev, "Transition to D0 failed\n");
return err;
......@@ -15055,19 +15052,13 @@ static void __devexit tg3_remove_one(struct pci_dev *pdev)
}
}
static int tg3_suspend(struct pci_dev *pdev, pm_message_t state)
static int tg3_suspend(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct tg3 *tp = netdev_priv(dev);
pci_power_t target_state;
int err;
/* PCI register 4 needs to be saved whether netif_running() or not.
* MSI address and data need to be saved if using MSI and
* netif_running().
*/
pci_save_state(pdev);
if (!netif_running(dev))
return 0;
......@@ -15088,9 +15079,7 @@ static int tg3_suspend(struct pci_dev *pdev, pm_message_t state)
tp->tg3_flags &= ~TG3_FLAG_INIT_COMPLETE;
tg3_full_unlock(tp);
target_state = pdev->pm_cap ? pci_target_state(pdev) : PCI_D3hot;
err = tg3_set_power_state(tp, target_state);
err = tg3_power_down_prepare(tp);
if (err) {
int err2;
......@@ -15117,21 +15106,16 @@ static int tg3_suspend(struct pci_dev *pdev, pm_message_t state)
return err;
}
static int tg3_resume(struct pci_dev *pdev)
static int tg3_resume(struct device *device)
{
struct pci_dev *pdev = to_pci_dev(device);
struct net_device *dev = pci_get_drvdata(pdev);
struct tg3 *tp = netdev_priv(dev);
int err;
pci_restore_state(tp->pdev);
if (!netif_running(dev))
return 0;
err = tg3_set_power_state(tp, PCI_D0);
if (err)
return err;
netif_device_attach(dev);
tg3_full_lock(tp, 0);
......@@ -15155,13 +15139,14 @@ static int tg3_resume(struct pci_dev *pdev)
return err;
}
static SIMPLE_DEV_PM_OPS(tg3_pm_ops, tg3_suspend, tg3_resume);
static struct pci_driver tg3_driver = {
.name = DRV_MODULE_NAME,
.id_table = tg3_pci_tbl,
.probe = tg3_init_one,
.remove = __devexit_p(tg3_remove_one),
.suspend = tg3_suspend,
.resume = tg3_resume
.driver.pm = &tg3_pm_ops,
};
static int __init tg3_init(void)
......
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