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SubjectRe: Promise 20265 IDE chip gets detected in wrong order 2.4.x

append="ide=reverse"

Various Mainboard manufacturers do things to place the FAKE-RAID in front
of the the legacy south bridge. This is classic Windows spoofing.

> PDC20265: IDE controller on PCI bus 00 dev 68
> VP_IDE: IDE controller on PCI bus 00 dev 89

In the past, PDC20265 was wrongly assumed to be offboard componets.
The reality is it is an onboard componet exclusive.

I can make a fix (breakage) but it will mess things up if you want to
install to it in the future.

Cheers,

Andre Hedrick
LAD Storage Consulting Group

On Tue, 19 Mar 2002, Dan Hopper wrote:

> Hi,
>
> I appear to have an issue with the detection order of IDE devices,
> such that on-board IDE controllers get detected in the wrong order,
> causing grief.
>
> Details: Soyo Dragon+ motherboard (KT266A-based) with Promise
> PDC20265 ATA100 controller on the motherboard. The Via and Promise
> IDE controllers can be enabled simultaneously, and I have the
> Promise chip in normal IDE (i.e. not RAID) mode. I have three hard
> drives on the Via chip, and a CDROM on the first cable of the
> Promise controller.
>
> With the PDC20265 disabled, boot-up messages are thus, and the world
> is fine with respect to loading Linux properly off of hda:
>
> Uniform Multi-Platform E-IDE driver Revision: 6.31
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> VP_IDE: IDE controller on PCI bus 00 dev 89
> PCI: No IRQ known for interrupt pin A of device 00:11.1. Please try using pci=biosirq.
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
> ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:DMA, hdb:DMA
> ide1: BM-DMA at 0xd808-0xd80f, BIOS settings: hdc:DMA, hdd:pio
> hda: MAXTOR 6L080J4, ATA DISK drive
> hdb: IC35L060AVER07-0, ATA DISK drive
> hdc: ST380021A, ATA DISK drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> hda: 156355584 sectors (80054 MB) w/1819KiB Cache, CHS=9732/255/63, UDMA(100)
> hdb: 120103200 sectors (61493 MB) w/1916KiB Cache, CHS=7476/255/63, UDMA(100)
> hdc: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=155061/16/63, UDMA(100)
> ide-floppy driver 0.97.sv
> Partition check:
> hda: hda1 hda2 < hda5 hda6 hda7 hda8 hda9 hda10 >
> hdb: hdb1 < hdb5 >
> hdc: unknown partition table
>
> (Note that hdc is as yet unformatted so don't sweat that partition
> table warning up there.)
>
>
> Now, when I enable the Promise controller in the BIOS, problems
> ensue with respect to the ordering of the assignments of ide0/1 and
> ide3/4:
>
> Uniform Multi-Platform E-IDE driver Revision: 6.31
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> PDC20265: IDE controller on PCI bus 00 dev 68
> PDC20265: chipset revision 2
> PDC20265: not 100% native mode: will probe irqs later
> PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
> ide0: BM-DMA at 0xd400-0xd407, BIOS settings: hda:pio, hdb:DMA
> ide1: BM-DMA at 0xd408-0xd40f, BIOS settings: hdc:pio, hdd:pio
> VP_IDE: IDE controller on PCI bus 00 dev 89
> PCI: No IRQ known for interrupt pin A of device 00:11.1. Please try using pci=biosirq.
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
> ide2: BM-DMA at 0xdc00-0xdc07, BIOS settings: hde:DMA, hdf:DMA
> ide3: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdg:DMA, hdh:pio
> hde: MAXTOR 6L080J4, ATA DISK drive
> hdf: IC35L060AVER07-0, ATA DISK drive
> hdg: ST380021A, ATA DISK drive
> hda: Pioneer DVD-ROM ATAPIModel DVD-114 0110, ATAPI CD/DVD-ROM drive
> ide0 at 0x1400-0x1407,0xc802 on irq 5
> ide2 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide3 at 0x170-0x177,0x376 on irq 15
>
> And so, things go downhill from there ending in a kernel panic since
> it can't find the root Linux partition, which is now unfortunately
> located on what it's calling hde instead of hda. This is just too
> bad.
>
>
> And finally, the only "fix" I've found so far, which is to stick an
> append="ide0=0x1f0,0x3f6 ide1=0x170,0x376"
> in lilo.conf. This results in a successful boot with everything
> back where I'd expect:
>
> Uniform Multi-Platform E-IDE driver Revision: 6.31
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> PDC20265: IDE controller on PCI bus 00 dev 68
> PDC20265: chipset revision 2
> PDC20265: not 100% native mode: will probe irqs later
> PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
> ide2: BM-DMA at 0xd400-0xd407, BIOS settings: hde:pio, hdf:DMA
> ide3: BM-DMA at 0xd408-0xd40f, BIOS settings: hdg:pio, hdh:pio
> VP_IDE: IDE controller on PCI bus 00 dev 89
> PCI: No IRQ known for interrupt pin A of device 00:11.1. Please try using pci=biosirq.
> VP_IDE: chipset revision 6
> VP_IDE: not 100% native mode: will probe irqs later
> VP_IDE: VIA vt8233 (rev 00) IDE UDMA100 controller on pci00:11.1
> ide0: BM-DMA at 0xdc00-0xdc07, BIOS settings: hda:DMA, hdb:DMA
> ide1: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdc:DMA, hdd:pio
> hda: MAXTOR 6L080J4, ATA DISK drive
> hdb: IC35L060AVER07-0, ATA DISK drive
> hdc: ST380021A, ATA DISK drive
> hde: Pioneer DVD-ROM ATAPIModel DVD-114 0110, ATAPI CD/DVD-ROM drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> ide1 at 0x170-0x177,0x376 on irq 15
> ide2 at 0x1400-0x1407,0xc802 on irq 5
> hda: 156355584 sectors (80054 MB) w/1819KiB Cache, CHS=9732/255/63, UDMA(100)
> hdb: 120103200 sectors (61493 MB) w/1916KiB Cache, CHS=7476/255/63, UDMA(100)
> hdc: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=155061/16/63, UDMA(100)
> hde: ATAPI DVD-ROM drive, 512kB Cache
> Uniform CD-ROM driver Revision: 3.12
> ide-floppy driver 0.97.sv
> Partition check:
> hda: hda1 hda2 < hda5 hda6 hda7 hda8 hda9 hda10 >
> hdb: hdb1 < hdb5 >
> hdc: unknown partition table
>
>
> So, to summarize, my question is: Why the heck is it assigning the
> first and second IDE channels, which are properly on ports 0x1f0 and
> 0x170, to ide2 and ide3 instead of ide0 and ide1? This seems at
> odds with the IDE docs I've looked at.
>
> True, I have a workaround, but that's quite a kernel parameter to
> have to lug around from now on. I'd rather it just "do the right
> thing", which seems to me to always put the Via controller on 0x1f0
> and 0x170 to ide0/ide1. Anyone have any suggestions? Looks kind of
> like a bug to me, but it could be a misunderstanding on my part.
>
> Thanks!
> Dan Hopper
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