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SubjectRe: WOL with 3c59x and 2.4.6-pre6 breaks WOL
Tobias Ringstrom wrote:
>
> I just tried 2.4.6-pre6 this morning, and found out that when I enable
> WOL (using enable_wol=1), my 3c905c-tx does not work at all any more.
> It worked just fine with 2.4.5. Without enable_wol=1, I have no problems.
>
> It is my guess that this is very easy to reproduce, but if not, please ask
> me for more details. I'm attaching the dmesg output. I'll be gone until
> monday.

Seems that the new PM code has broken the driver. It
wasn't doing the right thing in the first place.

Please use 2.4.6-pre8 plus this patch, let me know.

--- linux-2.4.6-pre8/drivers/pci/pci.c Sun Jul 1 16:11:25 2001
+++ linux-akpm/drivers/pci/pci.c Tue Jul 3 01:28:35 2001
@@ -425,7 +425,7 @@ int pci_enable_wake(struct pci_dev *dev,

if (enable) value |= PCI_PM_CTRL_PME_STATUS;
else value &= ~PCI_PM_CTRL_PME_STATUS;
-
+ value |= PCI_PM_CTRL_PME_ENABLE;
pci_write_config_word(dev, pm + PCI_PM_CTRL, value);

return 0;
--- linux-2.4.6-pre8/drivers/net/3c59x.c Sun Jul 1 16:11:24 2001
+++ linux-akpm/drivers/net/3c59x.c Tue Jul 3 01:29:08 2001
@@ -760,6 +760,7 @@ struct vortex_private {
u16 io_size; /* Size of PCI region (for release_region) */
spinlock_t lock; /* Serialise access to device & its vortex_private */
spinlock_t mdio_lock; /* Serialise access to mdio hardware */
+ u32 power_state[16];
};

/* The action to take with a media selection timer tick.
@@ -1239,9 +1240,6 @@ static int __devinit vortex_probe1(struc
}
}

- if (pdev && vp->enable_wol && (vp->capabilities & CapPwrMgmt))
- acpi_set_WOL(dev);
-
if (vp->capabilities & CapBusMaster) {
vp->full_bus_master_tx = 1;
printk(KERN_INFO" Enabling bus-master transmits and %s receives.\n",
@@ -1279,6 +1277,10 @@ static int __devinit vortex_probe1(struc
dev->set_multicast_list = set_rx_mode;
dev->tx_timeout = vortex_tx_timeout;
dev->watchdog_timeo = (watchdog * HZ) / 1000;
+ if (pdev && vp->enable_wol) {
+ pci_save_state(vp->pdev, vp->power_state);
+ acpi_set_WOL(dev);
+ }
retval = register_netdev(dev);
if (retval == 0)
return 0;
@@ -1331,8 +1333,10 @@ vortex_up(struct net_device *dev)
unsigned int config;
int i;

- if (vp->pdev && vp->enable_wol) /* AKPM: test not needed? */
+ if (vp->pdev && vp->enable_wol) {
pci_set_power_state(vp->pdev, 0); /* Go active */
+ pci_restore_state(vp->pdev, vp->power_state);
+ }

/* Before initializing select the active media port. */
EL3WINDOW(3);
@@ -1516,9 +1520,6 @@ vortex_open(struct net_device *dev)
int i;
int retval;

- if (vp->pdev && vp->enable_wol) /* AKPM: test not needed? */
- pci_set_power_state(vp->pdev, 0); /* Go active */
-
/* Use the now-standard shared IRQ implementation. */
if ((retval = request_irq(dev->irq, vp->full_bus_master_rx ?
&boomerang_interrupt : &vortex_interrupt, SA_SHIRQ, dev->name, dev))) {
@@ -2452,8 +2453,10 @@ vortex_down(struct net_device *dev)
if (vp->full_bus_master_tx)
outl(0, ioaddr + DownListPtr);

- if (vp->pdev && vp->enable_wol && (vp->capabilities & CapPwrMgmt))
+ if (vp->pdev && vp->enable_wol) {
+ pci_save_state(vp->pdev, vp->power_state);
acpi_set_WOL(dev);
+ }
}

static int
@@ -2808,8 +2811,10 @@ static void acpi_set_WOL(struct net_devi
/* The RxFilter must accept the WOL frames. */
outw(SetRxFilter|RxStation|RxMulticast|RxBroadcast, ioaddr + EL3_CMD);
outw(RxEnable, ioaddr + EL3_CMD);
+
/* Change the power state to D3; RxEnable doesn't take effect. */
- pci_set_power_state(vp->pdev, 0x8103);
+ pci_enable_wake(vp->pdev, 0, 1);
+ pci_set_power_state(vp->pdev, 3);
}
-
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