Date: Thu, 24 Jul 2003 08:20:34 +0200 From: John Hay <jhay@icomtek.csir.co.za> To: current@FreeBSD.org Subject: pnp code and irq 2 problem Message-ID: <20030724062034.GA54536@zibbi.icomtek.csir.co.za>
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Hi, Somewhere along the line the code in FreeBSD that maps irq 2 to irq 9 has gone away and a panic was added if one tries to use irq 2. This is all well and fine, except that the pnp code was not notified of this. :-) So if you have a pnp device that have irq 2 in its mask and FreeBSD then decides that irq 2 is a good irq to use for this device, you have an instant panic. I have worked around it with this crude patch below. Crude because: 1) I don't know if it should be an i386 only fix, and 2) I used 0x04 directly, maybe IRQ_SLAVE from i386/isa/icu.h or some other difine should be used? John -- John Hay -- John.Hay@icomtek.csir.co.za / jhay@FreeBSD.org Index: isa/pnpparse.c =================================================================== RCS file: /home/ncvs/src/sys/isa/pnpparse.c,v retrieving revision 1.13 diff -u -r1.13 pnpparse.c --- isa/pnpparse.c 16 Oct 2002 09:07:30 -0000 1.13 +++ isa/pnpparse.c 19 Jun 2003 06:00:02 -0000 @@ -110,7 +110,8 @@ if (bootverbose) pnp_printf(id, "adding irq mask %#02x\n", I16(res)); - config->ic_irqmask[config->ic_nirq] = I16(res); + config->ic_irqmask[config->ic_nirq] = I16(res) & + ~0x04; config->ic_nirq++; break;
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