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Code Issues Releases Activity

Instead of marking all 159 interrupts as available in the IRQ resource

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manager, only add interrupts that have an associated source in the
interrupt table to the resource manager.
This commit is contained in:
John Baldwin 2003-11-05 23:19:44 +00:00
parent f84d8b318a
commit e76f445443
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=122150
1 changed files with 19 additions and 3 deletions
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22
sys/i386/i386/nexus.c
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@ -139,6 +139,7 @@ DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0);
static int
nexus_probe(device_t dev)
{
int irq, last;
device_quiet(dev); /* suppress attach message for neatness */
@ -164,11 +165,26 @@ nexus_probe(device_t dev)
irq_rman.rm_type = RMAN_ARRAY;
irq_rman.rm_descr = "Interrupt request lines";
irq_rman.rm_end = NUM_IO_INTS - 1;
if (rman_init(&irq_rman)
|| rman_manage_region(&irq_rman,
irq_rman.rm_start, irq_rman.rm_end))
if (rman_init(&irq_rman))
panic("nexus_probe irq_rman");
/*
* We search for regions of existing IRQs and add those to the IRQ
* resource manager.
*/
last = -1;
for (irq = 0; irq < NUM_IO_INTS; irq++)
if (intr_lookup_source(irq) != NULL) {
if (last == -1)
last = irq;
} else if (last != -1) {
if (rman_manage_region(&irq_rman, last, irq - 1) != 0)
panic("nexus_probe irq_rman add");
last = -1;
}
if (last != -1 && rman_manage_region(&irq_rman, last, irq - 1) != 0)
panic("nexus_probe irq_rman add");
/*
* ISA DMA on PCI systems is implemented in the ISA part of each
* PCI->ISA bridge and the channels can be duplicated if there are