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Deal with edge versus level interrupts properly. From Masanori Kanaoka.

This commit is contained in:
christos 2004-04-30 02:44:03 +00:00
parent 1feb40124e
commit f117f546d1
1 changed files with 36 additions and 4 deletions
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40
sys/arch/i386/pci/pci_intr_fixup.c
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@ -1,4 +1,4 @@
/* $NetBSD: pci_intr_fixup.c,v 1.29 2004/04/11 06:00:26 kochi Exp $ */
/* $NetBSD: pci_intr_fixup.c,v 1.30 2004/04/30 02:44:03 christos Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pci_intr_fixup.c,v 1.29 2004/04/11 06:00:26 kochi Exp $");
__KERNEL_RCSID(0, "$NetBSD: pci_intr_fixup.c,v 1.30 2004/04/30 02:44:03 christos Exp $");
#include "opt_pcibios.h"
@ -575,13 +575,45 @@ int
pciintr_irq_release(u_int16_t *pciirq)
{
int i, bit;
u_int16_t bios_pciirq;
int reg;
#ifdef PCIINTR_DEBUG
printf("pciintr_irq_release: fixup pciirq level/edge map 0x%04x\n",
*pciirq);
#endif
/* Get bios level/edge setting. */
bios_pciirq = 0;
for (i = 0, bit = 1; i < 16; i++, bit <<= 1) {
(void)pciintr_icu_get_trigger(pciintr_icu_tag,
pciintr_icu_handle, i, &reg);
if (reg == IST_LEVEL)
bios_pciirq |= bit;
}
#ifdef PCIINTR_DEBUG
printf("pciintr_irq_release: bios pciirq level/edge map 0x%04x\n",
bios_pciirq);
#endif /* PCIINTR_DEBUG */
/* fixup final level/edge setting. */
*pciirq |= bios_pciirq;
for (i = 0, bit = 1; i < 16; i++, bit <<= 1) {
if ((*pciirq & bit) == 0)
(void) pciintr_icu_set_trigger(pciintr_icu_tag,
pciintr_icu_handle, i, IST_EDGE);
reg = IST_EDGE;
else
reg = IST_LEVEL;
(void) pciintr_icu_set_trigger(pciintr_icu_tag,
pciintr_icu_handle, i, reg);
}
#ifdef PCIINTR_DEBUG
printf("pciintr_irq_release: final pciirq level/edge map 0x%04x\n",
*pciirq);
#endif /* PCIINTR_DEBUG */
return (0);
}