linux-kernel - Re: Info: mapping multiple BARs. Your kernel is fine.

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Date:	Wed, 26 Feb 2014 10:59:56 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Stephane Eranian <eranian@...gle.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	x86 <x86@...nel.org>, Daniel Vetter <daniel.vetter@...ll.ch>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	David Airlie <airlied@...ux.ie>,
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
	Jiri Kosina <jkosina@...e.cz>
Subject: Re: Info: mapping multiple BARs. Your kernel is fine.

Can you please, pretty please, not top-post...

On Wed, Feb 26, 2014 at 10:47:05AM +0100, Stephane Eranian wrote:
> Hi,
> 
> Ok, so I am getting the same error message as you.
> I checked my syslog now.
> 
> I have my uncore_imc addr=0xfed10000 (after masking)
> 
> And I also have pnp 00:01 overlapping the imc range completely.
> 
> What pnp device does  it really represent? the DRAM controller?
> 
> So I think my laptop behaves like yours.

grep -Er . /sys/devices/pnp0/00\:01/* 2>/dev/null
/sys/devices/pnp0/00:01/firmware_node/hid:PNP0C02
...

so this PNP0C02 is 

[    0.363943] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)

@Rafael, can you please make sense of this whole ACPI gunk?

We have a resource conflict with pnp 00:01, analysis here:
http://lkml.kernel.org/r/20140226092903.GA22639@pd.tnic

This is the rest of the 00:01 info from sysfs:

/sys/devices/pnp0/00:01/firmware_node/uid:0
/sys/devices/pnp0/00:01/firmware_node/path:\_SB_.PCI0.LPC_.SIO_
/sys/devices/pnp0/00:01/firmware_node/power/control:auto
/sys/devices/pnp0/00:01/firmware_node/power/runtime_active_time:0
/sys/devices/pnp0/00:01/firmware_node/power/runtime_status:unsupported
/sys/devices/pnp0/00:01/firmware_node/power/runtime_suspended_time:0
/sys/devices/pnp0/00:01/firmware_node/modalias:acpi:PNP0C02:
/sys/devices/pnp0/00:01/firmware_node/uevent:MODALIAS=acpi:PNP0C02:
/sys/devices/pnp0/00:01/id:PNP0c02
/sys/devices/pnp0/00:01/power/control:auto
/sys/devices/pnp0/00:01/power/runtime_active_time:0
/sys/devices/pnp0/00:01/power/runtime_status:unsupported
/sys/devices/pnp0/00:01/power/runtime_suspended_time:0
/sys/devices/pnp0/00:01/resources:state = active
/sys/devices/pnp0/00:01/resources:io 0x10-0x1f
/sys/devices/pnp0/00:01/resources:io 0x90-0x9f
/sys/devices/pnp0/00:01/resources:io 0x24-0x25
/sys/devices/pnp0/00:01/resources:io 0x28-0x29
/sys/devices/pnp0/00:01/resources:io 0x2c-0x2d
/sys/devices/pnp0/00:01/resources:io 0x30-0x31
/sys/devices/pnp0/00:01/resources:io 0x34-0x35
/sys/devices/pnp0/00:01/resources:io 0x38-0x39
/sys/devices/pnp0/00:01/resources:io 0x3c-0x3d
/sys/devices/pnp0/00:01/resources:io 0xa4-0xa5
/sys/devices/pnp0/00:01/resources:io 0xa8-0xa9
/sys/devices/pnp0/00:01/resources:io 0xac-0xad
/sys/devices/pnp0/00:01/resources:io 0xb0-0xb5
/sys/devices/pnp0/00:01/resources:io 0xb8-0xb9
/sys/devices/pnp0/00:01/resources:io 0xbc-0xbd
/sys/devices/pnp0/00:01/resources:io 0x50-0x53
/sys/devices/pnp0/00:01/resources:io 0x72-0x77
/sys/devices/pnp0/00:01/resources:io 0x400-0x47f
/sys/devices/pnp0/00:01/resources:io 0x500-0x57f
/sys/devices/pnp0/00:01/resources:io 0x800-0x80f
/sys/devices/pnp0/00:01/resources:io 0x15e0-0x15ef
/sys/devices/pnp0/00:01/resources:io 0x1600-0x167f
/sys/devices/pnp0/00:01/resources:mem 0xf8000000-0xfbffffff
/sys/devices/pnp0/00:01/resources:mem 0xfffff000-0xffffffff
/sys/devices/pnp0/00:01/resources:mem 0xfed1c000-0xfed1ffff
/sys/devices/pnp0/00:01/resources:mem 0xfed10000-0xfed13fff
/sys/devices/pnp0/00:01/resources:mem 0xfed18000-0xfed18fff
/sys/devices/pnp0/00:01/resources:mem 0xfed19000-0xfed19fff
/sys/devices/pnp0/00:01/resources:mem 0xfed45000-0xfed4bfff
/sys/devices/pnp0/00:01/resources:mem 0xfed40000-0xfed44fff
/sys/devices/pnp0/00:01/subsystem/drivers_autoprobe:1
/sys/devices/pnp0/00:01/uevent:DRIVER=system

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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