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SubjectRelated VIA PCI crazyness?
In supplement to Evan Thompson's emails with the subject "Additional
info. for PCI VIA IDE crazyness. Please read." I've noticed the
following message with recent 2.4.0 test + release kernels:

IRQ routing conflict in pirq table! Try 'pci=autoirq'

Booting with pci=autoirq results in an error message. Has this option
been removed at some point?

Setting DEBUG in arch/i386/kernel/pci-i386.h results in the following
extra messages in the boot log (+ a few context lines):

PCI: BIOS32 Service Directory structure at 0xc00fb0a0
PCI: BIOS32 Service Directory entry at 0xfb520
PCI: BIOS probe returned s=00 hw=11 ver=02.10 l=01
PCI: PCI BIOS revision 2.10 entry at 0xfb550, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: IDE base address fixup for 00:07.1
PCI: Scanning for ghost devices on bus 0
PCI: Scanning for ghost devices on bus 1
PCI: IRQ init
PCI: Interrupt Routing Table found at 0xc00fdf00
00:08 slot=01 0:01/deb8 1:02/deb8 2:03/deb8 3:05/deb8
00:09 slot=02 0:02/deb8 1:03/deb8 2:05/deb8 3:01/deb8
00:0a slot=03 0:03/deb8 1:05/deb8 2:01/deb8 3:02/deb8
00:0b slot=04 0:05/deb8 1:01/deb8 2:02/deb8 3:03/deb8
00:0c slot=05 0:01/deb8 1:02/deb8 2:03/deb8 3:05/deb8
00:07 slot=00 0:00/deb8 1:00/deb8 2:00/deb8 3:00/deb8
PCI: Using IRQ router VIA [1106/0586] at 00:07.0
PCI: IRQ fixup
PCI: Allocating resources
PCI: Resource e0000000-e7ffffff (f=1208, d=0, p=0)
PCI: Resource 0000e000-0000e00f (f=101, d=0, p=0)
PCI: Resource 0000e400-0000e41f (f=101, d=0, p=0)
PCI: Resource 0000e800-0000e8ff (f=101, d=0, p=0)
PCI: Resource ef100000-ef1000ff (f=200, d=0, p=0)
PCI: Resource 0000ec00-0000ecff (f=101, d=0, p=0)
PCI: Resource ef101000-ef1010ff (f=200, d=0, p=0)
PCI: Resource ef000000-ef0fffff (f=200, d=0, p=0)
PCI: Resource ee000000-eeffffff (f=1208, d=0, p=0)
PCI: Resource ec000000-ecffffff (f=1208, d=0, p=0)
PCI: Resource e8000000-e8003fff (f=200, d=0, p=0)
PCI: Resource e9000000-e97fffff (f=200, d=0, p=0)
PCI: Sorting device list...
...
Starting kswapd v1.8
IRQ for 01:00.0:0 -> not found in routing table
matroxfb: Matrox Millennium II (AGP) detected
...
SCSI subsystem driver Revision: 1.00
IRQ for 00:08.0:0 -> PIRQ 01, mask deb8, excl 0e00 -> newirq=11 -> got IRQ 9
IRQ routing conflict in pirq table! Try 'pci=autoirq'
scsi0 : AdvanSys SCSI 3.2M: PCI Ultra 240 CDB: IO E800/F, IRQ 11
...
8139too Fast Ethernet driver 0.9.13 loaded
IRQ for 00:0a.0:0 -> PIRQ 03, mask deb8, excl 0e00 -> newirq=9 -> got IRQ 11
IRQ routing conflict in pirq table! Try 'pci=autoirq'
eth0: RealTek RTL8139 Fast Ethernet at 0xc8c39000, 00:40:95:33:7a:51, IRQ 9
eth0: Identified 8139 chip type 'RTL-8139B'
...

The IDE controller part of the boot log says:

VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c586b IDE UDMA33 controller on pci0:7.1
ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:DMA, hdd:DMA
hda: FUJITSU M1638TAU, ATA DISK drive
hdb: LS-120 COSM 05 UHD Floppy, ATAPI FLOPPY drive
ide: Assuming 33MHz system bus speed for PIO modes; override with
idebus=xx
hdc: ST310212A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15

So this may or may not be related to Evan's PCI IDE driver issues.

The bios is

BIOS Vendor: Award Software International, Inc.
BIOS Version: 4.51 PG
BIOS Release: 06/19/98

and the output of lspci is:

00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 03)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 41)
00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06)
00:07.2 USB Controller: VIA Technologies, Inc. UHCI USB (rev 02)
00:07.3 Bridge: VIA Technologies, Inc. VT82C586B ACPI (rev 10)
00:08.0 SCSI storage controller: Advanced System Products, Inc ABP940-U / ABP960-U (rev 03)
00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
00:0b.0 Multimedia controller: Sigma Designs, Inc. REALmagic Hollywood Plus DVD Decoder (rev 01)
00:0c.0 Multimedia video controller: 3Dfx Interactive, Inc. Voodoo 2 (rev 02)
01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA 2164W [Millennium II] AGP

HTH someone.

cheers,

Phil Armstrong

--
http://www.kantaka.co.uk/ .oOo. public key: http://www.kantaka.co.uk/gpg.txt

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