* An issue about sp5100 watchdog
@ 2015-12-08 5:42 Huang Rui
2015-12-08 7:03 ` Guenter Roeck
0 siblings, 1 reply; 3+ messages in thread
From: Huang Rui @ 2015-12-08 5:42 UTC (permalink / raw)
To: Guenter Roeck, Wim Van Sebroeck
Cc: Borislav Petkov, linux-watchdog, linux-kernel
Hi all,
I found an issue in some of AMD platforms about sp5100, that the MMIO
address (0x51413120) is already used by System RAM
(00100000-7c2befff)...
[ 29.928096] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver v0.05
[ 29.928302] sp5100_tco: PCI Vendor ID: 0x1022, Device ID: 0x790b, Revision ID: 0x4a
[ 29.928319] sp5100_tco: Got 0x51413120 from indirect I/O
[ 29.928323] sp5100_tco: MMIO address 0x51413120 already in use
[ 29.928332] sp5100_tco: SBResource_MMIO is disabled(0xe000a0)
[ 29.928333] sp5100_tco: failed to find MMIO address, giving up.
00100000-7c2befff : System RAM
01000000-017b1ab3 : Kernel code
017b1ab4-01d4ce7f : Kernel data
01ec4000-02008fff : Kernel bss
7c2bf000-7c8befff : reserved
7c8bf000-7cbbefff : ACPI Non-volatile Storage
7cbb6000-7cbb9fff : MSFT0101:00
7cbba000-7cbbdfff : MSFT0101:00
7cbbf000-7cbfefff : ACPI Tables
7cbff000-7cbfffff : System RAM
7cc00000-7effffff : reserved
Any idea?
Thanks,
Rui
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: An issue about sp5100 watchdog
2015-12-08 5:42 An issue about sp5100 watchdog Huang Rui
@ 2015-12-08 7:03 ` Guenter Roeck
2015-12-08 8:15 ` Huang Rui
0 siblings, 1 reply; 3+ messages in thread
From: Guenter Roeck @ 2015-12-08 7:03 UTC (permalink / raw)
To: Huang Rui, Wim Van Sebroeck; +Cc: Borislav Petkov, linux-watchdog, linux-kernel
On 12/07/2015 09:42 PM, Huang Rui wrote:
> Hi all,
>
> I found an issue in some of AMD platforms about sp5100, that the MMIO
> address (0x51413120) is already used by System RAM
> (00100000-7c2befff)...
>
> [ 29.928096] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver v0.05
> [ 29.928302] sp5100_tco: PCI Vendor ID: 0x1022, Device ID: 0x790b, Revision ID: 0x4a
> [ 29.928319] sp5100_tco: Got 0x51413120 from indirect I/O
> [ 29.928323] sp5100_tco: MMIO address 0x51413120 already in use
> [ 29.928332] sp5100_tco: SBResource_MMIO is disabled(0xe000a0)
> [ 29.928333] sp5100_tco: failed to find MMIO address, giving up.
>
If I understand the code correctly, the problem is really "SBResource_MMIO is disabled".
Presumably that is done in the BIOS. No idea if anything can be done about that.
Guenter
> 00100000-7c2befff : System RAM
> 01000000-017b1ab3 : Kernel code
> 017b1ab4-01d4ce7f : Kernel data
> 01ec4000-02008fff : Kernel bss
> 7c2bf000-7c8befff : reserved
> 7c8bf000-7cbbefff : ACPI Non-volatile Storage
> 7cbb6000-7cbb9fff : MSFT0101:00
> 7cbba000-7cbbdfff : MSFT0101:00
> 7cbbf000-7cbfefff : ACPI Tables
> 7cbff000-7cbfffff : System RAM
> 7cc00000-7effffff : reserved
>
> Any idea?
>
> Thanks,
> Rui
> --
> To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in
> the body of a message to majordomo@vger.kernel.org
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>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: An issue about sp5100 watchdog
2015-12-08 7:03 ` Guenter Roeck
@ 2015-12-08 8:15 ` Huang Rui
0 siblings, 0 replies; 3+ messages in thread
From: Huang Rui @ 2015-12-08 8:15 UTC (permalink / raw)
To: Guenter Roeck
Cc: Wim Van Sebroeck, Borislav Petkov, linux-watchdog, linux-kernel
On Mon, Dec 07, 2015 at 11:03:31PM -0800, Guenter Roeck wrote:
> On 12/07/2015 09:42 PM, Huang Rui wrote:
> >Hi all,
> >
> >I found an issue in some of AMD platforms about sp5100, that the MMIO
> >address (0x51413120) is already used by System RAM
> >(00100000-7c2befff)...
> >
> >[ 29.928096] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver v0.05
> >[ 29.928302] sp5100_tco: PCI Vendor ID: 0x1022, Device ID: 0x790b, Revision ID: 0x4a
> >[ 29.928319] sp5100_tco: Got 0x51413120 from indirect I/O
> >[ 29.928323] sp5100_tco: MMIO address 0x51413120 already in use
> >[ 29.928332] sp5100_tco: SBResource_MMIO is disabled(0xe000a0)
> >[ 29.928333] sp5100_tco: failed to find MMIO address, giving up.
> >
> If I understand the code correctly, the problem is really "SBResource_MMIO is disabled".
> Presumably that is done in the BIOS. No idea if anything can be done about that.
>
Thank you.
Compared with correct message:
00100000-3e4befff : System RAM
01000000-017b1ab3 : Kernel code
017b1ab4-01d4ce7f : Kernel data
01ec4000-02008fff : Kernel bss
3e4bf000-3e8befff : reserved
3e8bf000-3ebbefff : ACPI Non-volatile Storage
3ebqbf000-3ebfefff : ACPI Tables
3ebff000-3ebfffff : System RAM
3ec00000-7effffff : reserved
51413120-51413127 : SB800 TCO <- here
7f000000-f7ffffff : PCI Bus 0000:00
SB800 TCO area is reserved. Then it doesn't find MMIO address from
SBResource_MMIO register...
Thanks,
Rui
> Guenter
>
> >00100000-7c2befff : System RAM
> > 01000000-017b1ab3 : Kernel code
> > 017b1ab4-01d4ce7f : Kernel data
> > 01ec4000-02008fff : Kernel bss
> >7c2bf000-7c8befff : reserved
> >7c8bf000-7cbbefff : ACPI Non-volatile Storage
> > 7cbb6000-7cbb9fff : MSFT0101:00
> > 7cbba000-7cbbdfff : MSFT0101:00
> >7cbbf000-7cbfefff : ACPI Tables
> >7cbff000-7cbfffff : System RAM
> >7cc00000-7effffff : reserved
> >
> >Any idea?
> >
> >Thanks,
> >Rui
> >--
> >To unsubscribe from this list: send the line "unsubscribe linux-watchdog" in
> >the body of a message to majordomo@vger.kernel.org
> >More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
>
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-12-08 8:14 UTC | newest]
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2015-12-08 5:42 An issue about sp5100 watchdog Huang Rui
2015-12-08 7:03 ` Guenter Roeck
2015-12-08 8:15 ` Huang Rui
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