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Message-ID: <1186002023.18322.7.camel@dell> Date: Wed, 01 Aug 2007 14:00:23 -0700 From: "Michael Chan" <mchan@...adcom.com> To: "Joachim Deguara" <joachim.deguara@....com> cc: "Andrew Morton" <akpm@...ux-foundation.org>, "lkml List" <linux-kernel@...r.kernel.org>, "Michal Piotrowski" <michal.k.k.piotrowski@...il.com>, "netdev" <netdev@...r.kernel.org>, linux-acpi@...r.kernel.org Subject: Re: [REGRESSION] tg3 dead after s2ram On Wed, 2007-08-01 at 10:47 -0700, Michael Chan wrote: > You have 2 Broadcom devices in your system. 07:00.0 is a wireless > device, I think. 8:4.0 is the tg3 device. > > It's clear that the tg3 device is still in D3 state after resume and > that explains why all register accesses fail. tg3_resume() should put > the device back in D0 state in a very straight forward way and I don't > see how that can fail. It worked for me when I tested it last night. > Can you add some printk() to tg3_resume() to see what's happening? Let > me know if you want me to send you some debug patches to do that. I misread the PCI registers below. The power state was ok. The problem is that memory enable and bus master were not set in PCI register 4 after resume. This also explains the register access failures. In tg3_resume(), we call pci_restore_state() which should re-enable those 2 bits in PCI register 4. Can you add some printk() to see why those bits are not restored after pci_restore_state()? Thanks. > > Here's the before and after for 8:4.0: > > > > > Before > > > > 08:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5788 Gigabit > > Ethernet (rev 03) > > Subsystem: Acer Incorporated [ALI] Unknown device 010e > > Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- > > SERR- FastB2B- > > Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- > > <MAbort- >SERR- <PERR- > > Latency: 0 (16000ns min) > > Interrupt: pin A routed to IRQ 22 > > Region 0: Memory at d0300000 (32-bit, non-prefetchable) [size=64K] > > Expansion ROM at <ignored> [disabled] > > Capabilities: [48] Power Management version 2 > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+) > > Status: D0 PME-Enable- DSel=0 DScale=1 PME- > > Capabilities: [50] Vital Product Data > > Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 > > Enable- > > Address: ffff6bfe7fffffb8 Data: fec7 > > 00: e4 14 9c 16 06 00 b0 02 03 00 00 02 00 00 00 00 > > 10: 00 00 30 d0 00 00 00 00 00 00 00 00 00 00 00 00 > > 20: 00 00 00 00 00 00 00 00 07 00 00 00 25 10 0e 01 > > 30: 00 00 ff ff 48 00 00 00 00 00 00 00 0a 01 40 00 > > 40: 00 00 00 00 00 00 00 00 01 50 02 c0 00 20 00 00 > > 50: 03 58 fc 00 6f bf be 7f 05 00 86 00 b8 ff ff 7f > > 60: fe 6b ff ff c7 fe 00 00 98 00 03 30 00 00 3f 76 > > 70: f6 10 00 00 20 00 00 80 14 04 00 00 00 00 00 00 > > 80: 85 6b d0 36 03 40 00 0c 34 00 13 04 82 90 09 04 > > 90: 09 97 00 01 00 00 00 00 00 00 00 00 eb 01 00 00 > > a0: 00 00 00 00 23 01 00 00 00 00 00 00 cb 00 00 00 > > b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > > > After > > > > 08:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5788 Gigabit > > Ethernet (rev 03) > > Subsystem: Acer Incorporated [ALI] Unknown device 010e > > Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- > > SERR- FastB2B- > > Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- > > <MAbort- >SERR- <PERR- > > Interrupt: pin A routed to IRQ 22 > > Region 0: Memory at d0300000 (32-bit, non-prefetchable) [disabled] [size=64K] > > Expansion ROM at <ignored> [disabled] > > Capabilities: [48] Power Management version 2 > > Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+) > > Status: D0 PME-Enable+ DSel=0 DScale=1 PME- > > Capabilities: [50] Vital Product Data > > Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/3 > > Enable- > > Address: ffff6bfe7fffffb8 Data: fec7 > > 00: e4 14 9c 16 00 00 b0 02 03 00 00 02 00 00 00 00 > > 10: 00 00 30 d0 00 00 00 00 00 00 00 00 00 00 00 00 > > 20: 00 00 00 00 00 00 00 00 07 00 00 00 25 10 0e 01 > > 30: 00 00 ff ff 48 00 00 00 00 00 00 00 0a 01 40 00 > > 40: 00 00 00 00 00 00 00 00 01 50 02 c0 00 21 00 64 > > 50: 03 58 fc 00 6f bf be 7f 05 00 86 00 b8 ff ff 7f > > 60: fe 6b ff ff c7 fe 00 00 9a 00 03 30 00 00 00 00 > > 70: 76 10 00 00 40 00 00 00 50 00 00 00 00 00 00 00 > > 80: 03 58 fc 00 00 00 00 00 00 00 00 00 fe 90 09 04 > > 90: 01 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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