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SubjectRe: [patch 2.5] PCI: allow alternative methods for probing the BARs
My (as yet unresolved) problem seems related to this stuff.
I've applied this patch on the off-chance it might fix my problems, to
no avail. As you guys know about this stuff, perhaps you could glance
over my problem description - attached. I be much obliged, as I can't
use nptl *without* 2.5.x, and I can't use my e1000 *with* 2.5.x


2.5.53 and 2.5.54 do not seem to find everything on the pci bus on this
asus pr-dls dual p4 xeon m/b

With 2.4.20+ I see

hal3 root # cat /proc/pci
PCI devices found:
...

Bus 0, device 0, function 0:
Host bridge: PCI device 1166:0012 (ServerWorks) (rev 19).
Bus 0, device 0, function 1:
Host bridge: PCI device 1166:0012 (ServerWorks) (rev 0).
Bus 0, device 0, function 2:
Host bridge: PCI device 1166:0000 (ServerWorks) (rev 0).
Bus 0, device 2, function 0:
Ethernet controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 16).
IRQ 18.
Master Capable. Latency=32. Min Gnt=8.Max Lat=56.
Non-prefetchable 32 bit memory at 0xfd800000 [0xfd800fff].
I/O at 0xd800 [0xd83f].
Non-prefetchable 32 bit memory at 0xfd000000 [0xfd01ffff].
Bus 0, device 3, function 0:
VGA compatible controller: ATI Technologies Inc Rage XL (rev 39).
IRQ 46.
Master Capable. Latency=32. Min Gnt=8.
Non-prefetchable 32 bit memory at 0xfc000000 [0xfcffffff].
I/O at 0xd400 [0xd4ff].
Non-prefetchable 32 bit memory at 0xfb800000 [0xfb800fff].
Bus 0, device 15, function 0:
ISA bridge: ServerWorks CSB5 South Bridge (rev 147).
Master Capable. Latency=32.
Bus 0, device 15, function 3:
Host bridge: ServerWorks GCLE Host Bridge (rev 0).
Bus 0, device 16, function 0:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 0, device 16, function 2:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 0, device 17, function 0:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 0, device 17, function 2:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 14, device 4, function 0:
SCSI storage controller: LSI Logic / Symbios Logic (formerly NCR)
53c1030 (rev 7).
IRQ 22.
Master Capable. Latency=32. Min Gnt=17.Max Lat=18.
I/O at 0xa000 [0xa0ff].
Non-prefetchable 64 bit memory at 0xfa000000 [0xfa00ffff].
Non-prefetchable 64 bit memory at 0xf9800000 [0xf980ffff].
Bus 14, device 4, function 1:
SCSI storage controller: LSI Logic / Symbios Logic (formerly NCR)
53c1030 (#2) (rev 7).
IRQ 23.
Master Capable. Latency=32. Min Gnt=17.Max Lat=18.
I/O at 0x9800 [0x98ff].
Non-prefetchable 64 bit memory at 0xf9000000 [0xf900ffff].
Non-prefetchable 64 bit memory at 0xf8800000 [0xf880ffff].
Bus 18, device 2, function 0:
Ethernet controller: Intel Corp. 82544GC Gigabit Ethernet
Controller (rev 2).
IRQ 19.
Master Capable. Latency=32. Min Gnt=255.
Non-prefetchable 64 bit memory at 0xf8000000 [0xf801ffff].
Non-prefetchable 64 bit memory at 0xf7800000 [0xf781ffff].
I/O at 0x9400 [0x941f].


But with 2.5.53/2.5.54 bus 14 and bus 18 are missing:

hal3 root # cat /proc/pci
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: PCI device 1166:0012 (ServerWorks) (rev 19).
Bus 0, device 0, function 1:
Host bridge: PCI device 1166:0012 (ServerWorks) (rev 0).
Bus 0, device 0, function 2:
Host bridge: PCI device 1166:0000 (ServerWorks) (rev 0).
Bus 0, device 2, function 0:
Ethernet controller: Intel Corp. 82557/8/9 [Ethernet (rev 16).
IRQ 18.
Master Capable. Latency=32. Min Gnt=8.Max Lat=56.
Non-prefetchable 32 bit memory at 0xfd800000 [0xfd800fff].
I/O at 0xd800 [0xd83f].
Non-prefetchable 32 bit memory at 0xfd000000 [0xfd01ffff].
Bus 0, device 3, function 0:
VGA compatible controller: ATI Technologies Inc Rage XL (rev 39).
IRQ 46.
Master Capable. Latency=32. Min Gnt=8.
Non-prefetchable 32 bit memory at 0xfc000000 [0xfcffffff].
I/O at 0xd400 [0xd4ff].
Non-prefetchable 32 bit memory at 0xfb800000 [0xfb800fff].
Bus 0, device 15, function 0:
ISA bridge: ServerWorks CSB5 South Bridge (rev 147).
Master Capable. Latency=32.
Bus 0, device 15, function 3:
Host bridge: PCI device 1166:0225 (ServerWorks) (rev 0).
Bus 0, device 16, function 0:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 0, device 16, function 2:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 0, device 17, function 0:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.
Bus 0, device 17, function 2:
Host bridge: PCI device 1166:0101 (ServerWorks) (rev 3).
Master Capable. Latency=64.


ACPI is enabled in both cases (Won't boot with pci=noacpi)

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