2.2.x and 2.4.0-xxx, do not share the same interrupt pin hack.

This is in 2.2.x patches.

printk("%s: onboard version of chipset, pin1=%d pin2=%d\n", d->name, pin1, pin2);
#if 1
/* I forgot why I did this once, but it fixed something. */
pci_write_config_byte(dev2, PCI_INTERRUPT_PIN, dev->irq);
printk("PCI: %s: Fixing interrupt %d pin %d to ZERO \n", d->name, dev2->irq, pin2);
pci_write_config_byte(dev2, PCI_INTERRUPT_LINE, 0);
#endif

It does the undocumented "mode 3" that I had to explain to HighPoint that
ABIT violated the OEM docs.

It is a PCI-addon chipset style deployed like a legacy chipset.

Primary   channel is set to IRQ X   and PIN A
Secondary channel is set to IRQ X++ and PIN B

This is not allowed by the guidelines but it you do the big nasty above,
it will fix it 99% of the time.

Add the above stub to ide-pci.c near or at line 756 to look like 2.2, then
retry and see if it fixes it.  Then you bitch at Linus, not me, because it
is a functional kludge, but a "kludge".

Cheers,

On Tue, 21 Nov 2000, Hakan Lennestal wrote:

> 
> Hi !
> 
> I'm having problems when booting 2.4.0 test10 and test11 kernels
> (perhaps some earlier kernels too).
> Approximately nine out of ten times the kernel hangs when
> trying to detect partitions on the first HPT366 disk.
> 
> It looks something like this:
> 
>   Nov 21 08:08:40 t kernel: Uniform Multi-Platform E-IDE driver Revision: 6.31
>   Nov 21 08:08:40 t kernel: ide: Assuming 33MHz system bus speed for PIO modes; 
>override with idebus=xx
>   Nov 21 08:08:40 t kernel: PIIX4: IDE controller on PCI bus 00 dev 39
>   Nov 21 08:08:40 t kernel: PIIX4: chipset revision 1
>   Nov 21 08:08:40 t kernel: PIIX4: not 100%% native mode: will probe irqs later
>   Nov 21 08:08:40 t kernel:     ide0: BM-DMA at 0xf000-0xf007, BIOS settings: 
>hda:DMA, hdb:pio
>   Nov 21 08:08:40 t kernel:     ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: 
>hdc:DMA, hdd:pio
>   Nov 21 08:08:40 t kernel: HPT366: IDE controller on PCI bus 00 dev 48
>   Nov 21 08:08:40 t kernel: HPT366: chipset revision 1
>   Nov 21 08:08:40 t kernel: HPT366: not 100%% native mode: will probe irqs later
>   Nov 21 08:08:40 t kernel:     ide2: BM-DMA at 0xac00-0xac07, BIOS settings: 
>hde:DMA, hdf:pio
>   Nov 21 08:08:40 t kernel: HPT366: IDE controller on PCI bus 00 dev 49
>   Nov 21 08:08:40 t kernel: HPT366: chipset revision 1
>   Nov 21 08:08:40 t kernel: HPT366: not 100%% native mode: will probe irqs later
>   Nov 21 08:08:40 t kernel:     ide3: BM-DMA at 0xb800-0xb807, BIOS settings: 
>hdg:DMA, hdh:pio
>   Nov 21 08:08:40 t kernel: hda: FUJITSU MPD3064AT, ATA DISK drive
>   Nov 21 08:08:40 t kernel: hdc: Hewlett-Packard CD-Writer Plus 8200, ATAPI CDROM 
>drive
>   Nov 21 08:08:40 t kernel: hdd: IOMEGA ZIP 100 ATAPI, ATAPI FLOPPY drive
>   Nov 21 08:08:40 t kernel: hde: IBM-DTLA-307030, ATA DISK drive
>   Nov 21 08:08:40 t kernel: hdg: QUANTUM Bigfoot TX12.0AT, ATA DISK drive
>   Nov 21 08:08:40 t kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
>   Nov 21 08:08:40 t kernel: ide1 at 0x170-0x177,0x376 on irq 15
>   Nov 21 08:08:40 t kernel: ide2 at 0xa400-0xa407,0xa802 on irq 9
>   Nov 21 08:08:40 t kernel: ide3 at 0xb000-0xb007,0xb402 on irq 9
>   Nov 21 08:08:40 t kernel: hda: 12672450 sectors (6488 MB) w/512KiB Cache, 
>CHS=788/255/63, UDMA(33)
>   Nov 21 08:08:40 t kernel: hde: 60036480 sectors (30739 MB) w/1916KiB Cache, 
>CHS=59560/16/63, UDMA(66)
>   Nov 21 08:08:40 t kernel: hdg: 23547888 sectors (12057 MB) w/69KiB Cache, 
>CHS=23361/16/63, UDMA(33)
>   Nov 21 08:08:40 t kernel: Partition check:
>   Nov 21 08:08:40 t kernel:  hda: hda1 hda2 < hda5 hda6 hda7 >
>   Nov 21 08:08:40 t kernel:  hde: hde1 hde2 < hde5
> 
> And then after a while it gets a DMA timeout and hangs hard.
> 
> The hang can occur anywhere during the partition detection and it can for 
> instance also fail at once and look like:
> 
>   hde:
> 
> or fail even after the last partiton:
> 
>   hde: hde1 hde2 < hde5 hde6 hde7 hde8
> 
> Approximately one out of ten reboots the detection succedes and I'm able
> to boot up the kernel and then everything works smoothly.
> 
> There are no problems when booting 2.2.*-kernels with the HPT366-patch.
> 
> Regards.
> 
> /Håkan
> 
> 
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> 

Andre Hedrick
CTO Timpanogas Research Group
EVP Linux Development, TRG
Linux ATA Development

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