Hi,
2.6.27-rc1 kernels appear to corrupt the EEPROM/NVM of the 8086:294c
ethernet device (ICH9 I think). After hacking the driver to ignore the
bad CRC and MAC address I could view the EEPROM with ethtool and it was
all 0xff.
Testing EEPROM reads and writes with ethtool appeared to work but after
a reboot of the system the ethernet device (see lspci -v output) was no
longer present. Could invalid EEPROM contents with a valid CRC (as
would be the case after my read/write tests) result in the device
failing to enumerate on the PCIe bus?
David
00:00.0 Host bridge: Intel Corporation 82Q35 Express DRAM Controller
(rev 02)
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information
00:02.0 VGA compatible controller: Intel Corporation 82Q35 Express
Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at f0100000 (32-bit, non-prefetchable) [size=512K]
I/O ports at 2210 [size=8]
Memory at e0000000 (32-bit, prefetchable) [size=256M]
Memory at f0000000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable-
Capabilities: [d0] Power Management version 2
00:03.0 Communication controller: Intel Corporation 82Q35 Express MEI
Controller (rev 02)
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, fast devsel, latency 0, IRQ 5
Memory at f0185900 (64-bit, non-prefetchable) [size=16]
Capabilities: [50] Power Management version 3
Capabilities: [8c] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
00:03.2 IDE interface: Intel Corporation 82Q35 Express PT IDER
Controller (rev 02) (prog-if 85 [Master SecO PriO])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: 66MHz, fast devsel, IRQ 18
I/O ports at 2218 [size=8]
I/O ports at 2250 [size=4]
I/O ports at 2220 [size=8]
I/O ports at 2254 [size=4]
I/O ports at 21c0 [size=16]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
00:03.3 Serial controller: Intel Corporation 82Q35 Express Serial KT
Controller (rev 02) (prog-if 02 [16550])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 17
I/O ports at 2228 [size=8]
Memory at f0184000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #4 (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 20
I/O ports at 2100 [size=32]
Capabilities: [50] #13 [0306]
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #5 (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at 2120 [size=32]
Capabilities: [50] #13 [0306]
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #2 (rev 02) (prog-if 20 [EHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 22
Memory at f0185000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port
Capabilities: [98] #13 [0306]
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio
Controller (rev 02)
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, fast devsel, latency 0, IRQ 21
Memory at f0180000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
Capabilities: [70] Express Unknown type IRQ 0
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
Port 1 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=20, subordinate=20, sec-latency=0
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable+
Capabilities: [90] Subsystem: Hewlett-Packard Company Unknown device 2819
Capabilities: [a0] Power Management version 2
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express
Port 2 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=30, subordinate=30, sec-latency=0
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable+
Capabilities: [90] Subsystem: Hewlett-Packard Company Unknown device 2819
Capabilities: [a0] Power Management version 2
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #1 (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 20
I/O ports at 2140 [size=32]
Capabilities: [50] #13 [0306]
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #2 (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 21
I/O ports at 2160 [size=32]
Capabilities: [50] #13 [0306]
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #3 (rev 02) (prog-if 00 [UHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 22
I/O ports at 2180 [size=32]
Capabilities: [50] #13 [0306]
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #1 (rev 02) (prog-if 20 [EHCI])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0, IRQ 20
Memory at f0185400 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port
Capabilities: [98] #13 [0306]
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) (prog-if
01 [Subtractive decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=07, subordinate=07, sec-latency=32
I/O behind bridge: 00001000-00001fff
Memory behind bridge: f0200000-f02fffff
Capabilities: [50] Subsystem: Hewlett-Packard Company Unknown device 2819
00:1f.0 ISA bridge: Intel Corporation 82801IO (ICH9DO) LPC Interface
Controller (rev 02)
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information
00:1f.2 IDE interface: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4
port SATA IDE Controller (rev 02) (prog-if 8a [Master SecP PriP])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 18
I/O ports at 01f0 [size=8]
I/O ports at 03f4 [size=1]
I/O ports at 0170 [size=8]
I/O ports at 0374 [size=1]
I/O ports at 21d0 [size=16]
I/O ports at 21e0 [size=16]
Capabilities: [70] Power Management version 3
Capabilities: [b0] #13 [0306]
00:1f.5 IDE interface: Intel Corporation 82801I (ICH9 Family) 2 port
SATA IDE Controller (rev 02) (prog-if 85 [Master SecO PriO])
Subsystem: Hewlett-Packard Company Unknown device 2819
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 18
I/O ports at 2240 [size=8]
I/O ports at 2260 [size=4]
I/O ports at 2248 [size=8]
I/O ports at 2264 [size=4]
I/O ports at 21f0 [size=16]
I/O ports at 2200 [size=16]
Capabilities: [70] Power Management version 3
Capabilities: [b0] #13 [0306]
07:04.0 Ethernet controller: Accton Technology Corporation SMC2-1211TX
(rev 10)
Subsystem: Accton Technology Corporation EN-1207D Fast Ethernet Adapter
Flags: bus master, medium devsel, latency 32, IRQ 20
I/O ports at 1100 [size=256]
Memory at f0200000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
07:0b.0 RF controller: NEC Corporation Unknown device 015e (rev 02)
(prog-if 10)
Subsystem: NEC Corporation Unknown device 015e
Flags: bus master, medium devsel, latency 64, IRQ 22
Memory at f0200100 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 2
--
David Vrabel, Senior Software Engineer, Drivers
CSR, Churchill House, Cambridge Business Park, Tel: +44 (0)1223 692562
Cowley Road, Cambridge, CB4 0WZ http://www.csr.com/
On Fri, 08 Aug 2008 11:47:51 +0100 David Vrabel <[email protected]> wrote:
> 2.6.27-rc1 kernels appear to corrupt the EEPROM/NVM of the 8086:294c
> ethernet device (ICH9 I think). After hacking the driver to ignore the
> bad CRC and MAC address I could view the EEPROM with ethtool and it was
> all 0xff.
>
> Testing EEPROM reads and writes with ethtool appeared to work but after
> a reboot of the system the ethernet device (see lspci -v output) was no
> longer present. Could invalid EEPROM contents with a valid CRC (as
> would be the case after my read/write tests) result in the device
> failing to enumerate on the PCIe bus?
Is this still happening in Linus's current tree?
Was 2.6.26 OK?
Thanks.
Andrew Morton wrote:
> On Fri, 08 Aug 2008 11:47:51 +0100 David Vrabel <[email protected]> wrote:
>
>> 2.6.27-rc1 kernels appear to corrupt the EEPROM/NVM of the 8086:294c
>> ethernet device (ICH9 I think). After hacking the driver to ignore the
>> bad CRC and MAC address I could view the EEPROM with ethtool and it was
>> all 0xff.
>>
>> Testing EEPROM reads and writes with ethtool appeared to work but after
>> a reboot of the system the ethernet device (see lspci -v output) was no
>> longer present. Could invalid EEPROM contents with a valid CRC (as
>> would be the case after my read/write tests) result in the device
>> failing to enumerate on the PCIe bus?
FYI, Jesse Brandeburg replied off-list and said that a corrupt EEPROM
with a valid CRC can result in the device failing to enumerate.
> Is this still happening in Linus's current tree?
I don't know, and I'm reluctant to try until I have a reliable way to
restore an erased EEPROM.
> Was 2.6.26 OK?
2.6.26 was fine.
David
--
David Vrabel, Senior Software Engineer, Drivers
CSR, Churchill House, Cambridge Business Park, Tel: +44 (0)1223 692562
Cowley Road, Cambridge, CB4 0WZ http://www.csr.com/
On Tue, 19 Aug 2008 10:50:15 +0100 David Vrabel <[email protected]> wrote:
> Andrew Morton wrote:
> > On Fri, 08 Aug 2008 11:47:51 +0100 David Vrabel <[email protected]> wrote:
> >
> >> 2.6.27-rc1 kernels appear to corrupt the EEPROM/NVM of the 8086:294c
> >> ethernet device (ICH9 I think). After hacking the driver to ignore the
> >> bad CRC and MAC address I could view the EEPROM with ethtool and it was
> >> all 0xff.
> >>
> >> Testing EEPROM reads and writes with ethtool appeared to work but after
> >> a reboot of the system the ethernet device (see lspci -v output) was no
> >> longer present. Could invalid EEPROM contents with a valid CRC (as
> >> would be the case after my read/write tests) result in the device
> >> failing to enumerate on the PCIe bus?
>
> FYI, Jesse Brandeburg replied off-list and said that a corrupt EEPROM
> with a valid CRC can result in the device failing to enumerate.
I seem to recall one David S. Miller expressing strong opposition to
the e100[0] policy of escalating a dud EEPROM into a dead device.
> > Is this still happening in Linus's current tree?
>
> I don't know, and I'm reluctant to try until I have a reliable way to
> restore an erased EEPROM.
>
> > Was 2.6.26 OK?
>
> 2.6.26 was fine.
>
So we don't know why it corrupted the EEPROM?