Kumar Gala wrote:
>
> On Apr 21, 2009, at 3:30 PM, Gary Thomas wrote:
>
>> The [two] big differences I see are that the video card (00:0d.0)
>> is being assigned 0xC0000000, which lspci marks as "virtual".
>> I think I've had trouble in the past with memory regions which
>> started at 0 relative to the PCI space. Also "virtual" concerns me.
>>
>> Does this spark any ideas from anyone?
>
> Doesn't ring any bells. What does cat /proc/iomem look like between the
> two kernels.
About what I gleaned from lspci. The working 2.6.26 kernel has
space mapped in the controller (exposed memory window, I think)
and the video card got moved down accordingly.
---------------------------------- 2.6.26
c0000000-cfffffff : /p...@ff008500
c0000000-c7ffffff : 0000:00:00.0
c8000000-cbffffff : 0000:00:0c.0
c8000000-cbffffff : CoralP_fb
cc000000-cc0fffff : 0000:00:00.0
cc100000-cc11ffff : 0000:00:0b.0
cc120000-cc12ffff : 0000:00:0a.0
cc130000-cc13ffff : 0000:00:0a.0
cc140000-cc140fff : 0000:00:0b.0
cc140000-cc140fff : sata_promise
cc141000-cc141fff : 0000:00:0d.0
cc141000-cc141fff : ohci_hcd
cc142000-cc142fff : 0000:00:0d.1
cc142000-cc142fff : ohci_hcd
cc143000-cc1430ff : 0000:00:0d.2
cc143000-cc1430ff : ehci_hcd
cc143100-cc143100 : 0000:00:00.0
f0000000-f1ffffff : f0000000.flash
ff000200-ff0002ff : wdt
ff003000-ff0030ff : i2c
ff003100-ff0031ff : i2c
ff004500-ff004507 : serial
ff004600-ff004607 : serial
ff022000-ff022fff : usb
ff022000-ff022fff : ehci_hcd
ff023000-ff023fff : usb
ff023000-ff023fff : usb
ff023000-ff023fff : ehci_hcd
ff024000-ff024fff : ethernet
ff024520-ff02453f : mdio
ff025000-ff025fff : ethernet
---------------------------------- 2.6.28
c0000000-cfffffff : /p...@ff008500
c0000000-c3ffffff : 0000:00:0c.0
c0000000-c3ffffff : CoralP_fb
c4000000-c401ffff : 0000:00:0b.0
c4020000-c402ffff : 0000:00:0a.0
c4030000-c403ffff : 0000:00:0a.0
c4040000-c4040fff : 0000:00:0b.0
c4040000-c4040fff : sata_promise
c4041000-c4041fff : 0000:00:0d.0
c4041000-c4041fff : ohci_hcd
c4042000-c4042fff : 0000:00:0d.1
c4042000-c4042fff : ohci_hcd
c4043000-c40430ff : 0000:00:0d.2
c4043000-c40430ff : ehci_hcd
f0000000-f1ffffff : f0000000.flash
ff004500-ff004507 : serial
ff004600-ff004607 : serial
ff022000-ff022fff : usb
ff022000-ff022fff : ehci_hcd
ff023000-ff023fff : usb
ff023000-ff023fff : usb
ff023000-ff023fff : ehci_hcd
ff024000-ff024fff : ethernet
ff024520-ff02453f : mdio
ff025000-ff025fff : ethernet
I'm still looking into how the PCI address register for the video
card did not get written, even though the system obviously thinks
it did (hence "virtual")
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
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