Re: AEC6260M PCI-IDE-Card

Hi there,

On   8 May, this message from Henning Loeser echoed through cyberspace:

Hi I hope someone here can help me with this:
I got myself a Acard Pci-IDE card for my Powermac 7500 and found myself
with the problem that the linux 2.2.15  driver suppied by Andre Hedrick
with his 2.2.15-ide patch doesn't work under LinuxPPC in contrast to the
x86 machines. :-(
The problem is, that the card keeps losing its interrupt. The card is
detected during boot and finds the drive :

quoted

AEC6260R: IDE controller on PCI bus 00 dev 78
AEC6260R: not 100% native mode: will probe irqs later
AEC6260R: ROM enabled at 0x80800000
AEC6260: reg49h=0x00 ATA-66 Cable Port0
    ide2: BM-DMA at 0x0800-0x0807, BIOS settings: hde:pio, hdf:pio

                       ^^^^^^^^^^^^^
These port addresses are interesting... Are you sure your driver does
access the disks? These port addresses are not supposed to work with
stock kernels AFAIK....

quoted

hde: IBM-DJNA-352030, ATA DISK drive
ide2 at 0x840-0x847,0x000 on irq 25

                               ^^^^^^
This sounds reasonable. To be sure, can you send an lspci -vv and
lspci -bvv along?

quoted

hde: IBM-DJNA-352030, 19470MB w/1966kB Cache, CHS=39560/16/63, UDMA(66)

Disk found. I guess if it gets through here, it is at least able to read
id info from the drive...

but when doing the partition check I get:
kernel: hde: lost interrupt
kernel: ide_dmaproc: chipset supported ide_dma_lostirq func only: 11
kernel: hde: lost interrupt
kernel:  hde1ide_dmaproc: chipset supported ide_dma_lostirq func only: 11
kernel: hde: lost interrupt
kernel:  hde2 hde3ide_dmaproc: chipset supported ide_dma_lostirq func
	only: 11

Hm, might this be a problem with doing DMA?

and so on for every partition.
I compiled the kernel with sharing PCI IDE interrupt support, Generic PCI
busmaster support the AEC6260 driver AND Builtin PowerMac IDE support with
PowerMac IDE DMA support. If I let the buitin Ide support out, the kernel
wont even boot.

Yeah, PowerMac IDE support is still somewhat broken in the sense that
compile options are not clear, and generic IDE functionality depends on
machine-specific stuff configured-in that might not even be relevant to
your machine...

Thats wy I went back to the stable
kernel sources with the ide.2.2.15.20000504.patch with no real succes so
far either I admit :-)

I have a Promise U/66 IDE controller in my 7600, so I need Andre's
patches as well in the 2.2 kernels. I have not yet tried 2.2.15,
however... nor have I adapted the other patches that I need for PCI
stuff (like the port addresses mentioned above) to 2.2.15. Some day
soon...

Michel

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