Re: DMA not works in Linux 2.6.12, but in Windows works fine.

[Helge Pomorin <dotkomm@gmail.com>]

2005/5/23, Sergey Vlasov <vsu@altlinux.ru>:
> This is a known problem - if the Intel ICH5/6 controller is used in
> combined mode (SATA mapped to legacy IDE ports), DMA for PATA devices
> does not work.  If you reconfigure the controller in BIOS to not use the
> combined mode (so that the SATA part becomes a separate PCI device), DMA
> for PATA devices will work fine.
> 
> To IDE developers: Is something planned to work around this problem?
> AFAIK, there are some machines where BIOS does not provide an option to
> turn off the combined mode.
> 
Hi there,
Got similar looking problem here,
i cant change sata modes or something alike...

I get *disabling irq* message with Intel ICH 4 / SIL 3112 A rev 01
SATA Controller on Asus P4G8X Deluxe board (P4 Northwood, Intel
*granite bay* E702 Chipsets) at distros which using newer kernel than
2.6.5, manual installation of kernel >= 2.6.7 fails
(well i think udev isnt creating devices or something cause after i
did try compile the kernel on my own etc...
kernel modules  found the sata controller, the devices and the
partitions, but hangsup with an *waiting for /dev/sda3 (my root disk)
to appear*)

my messages are known i think... but for completion: 
(i did copied it from net this isn exactly my error
cause i dont know how to copy the error, after failed boot...)
ata1: SATA max UDMA/100 cmd 0xE09FC080 ctl 0xE09FC08A bmdma 0xE09FC000
irq 11
ata2: SATA max UDMA/100 cmd 0xE09FC0C0 ctl 0xE09FC0CA bmdma
0xE09FC008 irq 11
irq 11: nobody cared!
[<c012fbea>] __report_bad_irq+0x2a/0x90
[<c012f5a0>] handle_IRQ_event+0x30/0x70
[<c012fcdc>] note_interrupt+0x6c/0xd0
[<c012f710>] __do_IRQ+0x130/0x160
[<c01042b9>] do_IRQ+0x19/0x30
[<c010289a>] common_interrupt+0x1a/0x20
[<c0117830>] __do_softirq+0x30/0x90
[<c01178b6>] do_softirq+0x26/0x30
[<c012f564>] irq_exit+0x34/0x40
[<c01042be>] do_IRQ+0x1e/0x30
[<c010289a>] common_interrupt+0x1a/0x20
[<c01005f0>] default_idle+0x0/0x30
[<c0100613>] default_idle+0x23/0x30
[<c010068a>] cpu_idle+0x3a/0x60
[<c03ca767>] start_kernel+0x147/0x160
[<c03ca360>] unknown_bootoption+0x0/0x1b0
handlers:
[<c0273770>] (usb_hcd_irq+0x0/0x70)
[<e0a65460>] (ata_interrupt+0x0/0x1c0 [libata])
Disabling IRQ #11
ata1: dev 0 cfg 49:2f00 82:346b 83:7f21 84:4003 85:3469 86:3c01
87:4003 88:203f
ata1: dev 0 ATA, max UDMA/100, 390721968 sectors: lba48 

i got that problem after a new installation of my system, before that
it worked with a 2.6.10 kernel on same system (something about 4 weeks
ago dont know settings anymore sorry...)

well im trying some different partition style layouts,
cause i just get that message with an seperate boot partition formated
with ext3,
if i set up a blank installation without that */boot* it works fine,
even with newer version's...

if u got an idea, need some logs infos etc message me :-)

greets
Helge Pomorin
Berlin, Germany