PCI bridge handling 2.4.0-test10 -> 2.4.2-pre3

[Jan-Benedict Glaw]

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Hi!

I've got a "Bull Express5800/Series" (dual P3) with a DAC1164 RAID
controller. The mainboard is ServerWorks based and however, 2.4.2-pre3
fails to find the RAID controller. I think there's a problem at
scanning PCI busses behind PCI bridges. Here's the PCI bus layout as
2.4.0-test10 recognizes it:

-+-[01]-+-04.0  Adaptec 7899P
 |      +-04.1  Adaptec 7899P
 |      \-0a.0-[02]--+-08.0  Digital Equipment Corporation: Unknown device =
1065
 |                   \-09.0  Mylex Corporation eXtremeRAID support Device
 \-[00]-+-00.0  Relience Computer CNB20HE
        +-00.1  Relience Computer CNB20HE
        +-02.0  ATI Technologies Inc 3D Rage IIC 215IIC [Mach64 GT IIC]
        +-03.0  Intel Corporation 82557 [Ethernet Pro 100]
        +-06.0  Intel Corporation 82557 [Ethernet Pro 100]
        +-07.0  Intel Corporation 82557 [Ethernet Pro 100]
        +-0f.0  Relience Computer: Unknown device 0200
        \-0f.1  Relience Computer: Unknown device 0211

Here's log output from both 2.4.0-test10 (successfully booting) and
2.4.2-pre3 (no success due to missing root fs):

----------------------- 2.4.0-test10 -----------------------
PCI: PCI BIOS revision 2.10 entry at 0xfdb3c, last bus=3D2
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: ServerWorks host bridge: secondary bus 00
PCI: ServerWorks host bridge: secondary bus 01
PCI->APIC IRQ transform: (B1,I4,P0) -> 16
PCI->APIC IRQ transform: (B1,I4,P1) -> 17
PCI->APIC IRQ transform: (B2,I8,P0) -> 20
PCI->APIC IRQ transform: (B0,I2,P0) -> 19
PCI->APIC IRQ transform: (B0,I3,P0) -> 18
PCI->APIC IRQ transform: (B0,I6,P0) -> 26
PCI->APIC IRQ transform: (B0,I7,P0) -> 23
[...]
DAC960: ***** DAC960 RAID Driver Version 2.4.8 of 19 August 2000 *****
DAC960: Copyright 1998-2000 by Leonard N. Zubkoff <[e-mail]>
DAC960#0: Configuring Mylex DAC1164P PCI RAID Controller
DAC960#0:   Firmware Version: 5.07-0-79, Channels: 3, Memory Size: 16MB
DAC960#0:   PCI Bus: 2, Device: 8, Function: 0, I/O Address: Unassigned
DAC960#0:   PCI Address: 0xFB110000 mapped at 0xE0800000, IRQ Channel: 20
DAC960#0:   Controller Queue Depth: 128, Maximum Blocks per Command: 128
DAC960#0:   Driver Queue Depth: 127, Scatter/Gather Limit: 33 of 33 Segments
DAC960#0:   Stripe Size: 64KB, Segment Size: 8KB, BIOS Geometry: 255/63
DAC960#0:   SAF-TE Enclosure Management Enabled

----------------------- 2.4.2-pre3 -------------------------------
PCI: PCI BIOS revision 2.10 entry at 0xfdb3c, last bus=3D2
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: ServerWorks host bridge: last bus ff
PCI->APIC IRQ transform: (B0,I2,P0) -> 19
PCI->APIC IRQ transform: (B0,I3,P0) -> 18
PCI->APIC IRQ transform: (B0,I6,P0) -> 26
PCI->APIC IRQ transform: (B0,I7,P0) -> 23

Can you give me some advice on how to hack those PCI bridges?

MfG, JBG

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!!!
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