> On Mon, Nov 19, 2001 at 12:48:24PM -0500, John Clemens wrote:
> > I've been hacking some PCI code to get USB working on my laptop. I need
> > to change PCI config space to use IRQ 11 for the device instead of IRQ 9.
> Changing interrupts is non-trivial, especially on x86.
nod. But it can be done in this case.. its just i have to call 'setpci'
from user space to change the interrupt line manually before i modeprobe
usb-ohci. I thought pci_write_config_byte should take care of that.
for a complete rundown of what i'm doing, please see my earlier post which
garnered no responses whatsoever:
> The kernel caches a copy of the IRQ number register. The IRQ number
> register (PCI_INTERRUPT_LINE) is just like RAM - you can read it, you
> can write it. However, it has no hardware side effects however. It's
> sole purpose in life is to communicate the IRQ number from the POST
> (which knows how the interrupts are arranged) to the driver.
so is there a kernel call I can use to actually twiddle the bits?
-- John Clemens http://www.deater.net/john email@example.com ICQ: 7175925, IM: PianoManO8 "I Hate Quotes" -- Samuel L. Clemens
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