Messages in this thread | | | Date | Thu, 29 Jan 2009 14:22:47 -0800 | From | "Matt Carlson" <> | Subject | Re: 2.6.29-rc3: tg3 dead after resume |
| |
On Thu, Jan 29, 2009 at 02:06:35PM -0800, Parag Warudkar wrote: > > > On Thu, 29 Jan 2009, Matt Carlson wrote: > > > Can you apply the following test patch and see if it helps? The patch > > does two things. First, it enables a bit which should restore firmware > > communication. If that fixes the problem, then let me know and I'll > > spin a proper patch. > > > > In the event that it doesn't work, the patch goes on to test the memory > > mapping by simply printing the register value at offset 0x0. The value > > should be the device's vendor ID and device ID. Please post the > > results so that I can verify it. > > > > > > diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c > > index 8b3f846..39fce42 100644 > > --- a/drivers/net/tg3.c > > +++ b/drivers/net/tg3.c > > @@ -7227,6 +7227,11 @@ static int tg3_init_hw(struct tg3 *tp, int reset_phy) > > { > > tg3_switch_clocks(tp); > > > > + printk( KERN_NOTICE "%s: Reg value at offset 0x0 is 0x%x\n", > > + tp->dev->name, tr32(0x0) ); > > + > > + tw32(MEMARB_MODE, tr32(MEMARB_MODE) | MEMARB_MODE_ENABLE); > > + > > tw32(TG3PCI_MEM_WIN_BASE_ADDR, 0); > > > > return tg3_reset_hw(tp, reset_phy); > > > > Hi Matt, > > Thanks for the patch. It didn't help with resume - but below is the > output after patching, let me know if you need more details. > > ( Looks like 0xffffffff is invalid/corrupted device id /vendor id? ) > > [ 163.856001] tg3 0000:0e:00.0: restoring config space at offset 0xc (was 0x0, writing 0x20040000) > [ 163.856001] tg3 0000:0e:00.0: restoring config space at offset 0x3 (was 0x0, writing 0x10) > [ 163.856001] tg3 0000:0e:00.0: restoring config space at offset 0x1 (was 0x100000, writing 0x100006) > > [snip] > > [ 164.450277] pcieport-driver 0000:1e:00.0: setting latency timer to 64 > [ 164.450415] pcieport-driver 0000:1e:01.0: setting latency timer to 64 > [ 164.450493] tg3 0000:0e:00.0: restoring config space at offset 0xc (was 0x0, writing 0x20040000) > [ 164.451110] serial 00:08: activated > > [snip] > > [ 168.913863] Restarting tasks ... done. > [ 170.332953] tg3 0000:0e:00.0: wake-up capability disabled by ACPI > [ 170.332960] tg3 0000:0e:00.0: PME# disabled > [ 170.333047] tg3 0000:0e:00.0: irq 54 for MSI/MSI-X > [ 170.333250] eth0: Reg value at offset 0x0 is 0xffffffff ^^^^^^^^^^^^^^^^^ So here is our problem. For some reason the memory mapped IO is failing. I'll have to think about how and why that might happen.
FWIW, I can suspend and resume using the latest linux-2.6 kernel on a machine with a similar chip here. The problem doesn't seem to affect all Broadcom devices.
> [ 170.394281] [drm] Loading R500 Microcode > [ 170.394330] [drm] Num pipes: 1 > [ 171.726650] tg3: eth0: No firmware running. > [ 183.119745] ADDRCONF(NETDEV_UP): eth0: link is not ready > > > Parag >
| |