Date: Sat, 08 May 1999 11:30:09 +0200 From: Gary Jennejohn <garyj@peedub.muc.de> To: Julian Elischer <julian@whistle.com> Cc: hackers@freebsd.org Subject: Re: Advice on terrible hacky PCI driver. Message-ID: <199905080930.LAA32929@peedub.muc.de> In-Reply-To: Your message of "Fri, 07 May 1999 19:36:44 PDT." <Pine.BSF.3.95.990507185722.14285U-100000@current1.whistle.com>
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Julian Elischer writes:
>
>
>I have a driver for a device that exists onthe PCI bus..
>unfortunatly (don't ask) it has a separate interrupt as well that runs
>directly to int6 of the 8259. (not via the PCI bus and not configured in
>by the bios etc.)
>
>I've tried the following terrible hack in the driver, but it didn't seem
>to work. any thoughts?
>
>
>
>static void
>pwrfailPCIattach( pcici_t config_id, int unit)
>{
> sc_p scp;
> scp = sca[unit];
>
> config_id->intline = 6; /* pretend the chip said irq 6 */
> config_id->intpin = 4; /* pretend it's pin D */
> /*
> * Allocate our (hardwired) interrupt.
> */
> if (!pci_map_int(config_id, pwrfailintr, scp, &bio_imask)) {
> printf("pwrfail%d: couldn't map interrupt\n", unit);
> } else {
> printf("pwrfail%d: interrupt %d mapped\n",
> unit, config_id->intline);
> }
>}
>
>
>It get's the success message, but the interrupt is never delivered to the
>routine pwrfailintr().
>
it seems like this should work, but the new-bus code is such a maze of
twisty little passages, all alike, that I can't wrap my head around it.
---
Gary Jennejohn
Home - garyj@muc.de
Work - garyj@fkr.dec.com
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