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When a pci device hasn't had an interrupt routed to it (signified by

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the intline of 255) go ahead and route the interrupt when we allocate
an interrupt.

Submitted by: msmith
This commit is contained in:
Warner Losh 2000-10-16 07:24:00 +00:00
parent 0d8188ce22
commit 9bf4bbcaf7
2 changed files with 38 additions and 0 deletions
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19
sys/dev/pci/pci.c
View File

@ -1286,6 +1286,25 @@ pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
{
struct pci_devinfo *dinfo = device_get_ivars(child);
struct resource_list *rl = &dinfo->resources;
pcicfgregs *cfg = &dinfo->cfg;
/*
* Perform lazy resource allocation
*
* XXX add support here for SYS_RES_IOPORT and SYS_RES_MEMORY
*/
if (device_get_parent(child) == dev) {
if ((type == SYS_RES_IRQ) && (cfg->intline == 255)) {
cfg->intline = PCIB_ROUTE_INTERRUPT(
device_get_parent(dev), pci_get_slot(child),
cfg->intpin);
if (cfg->intline != 255) {
/* XXX write back to PCI space? */
resource_list_add(rl, SYS_RES_IRQ, 0,
cfg->intline, cfg->intline, 1);
}
}
}
return resource_list_alloc(rl, dev, child, type, rid,
start, end, count, flags);

19
sys/pci/pci.c
View File

@ -1286,6 +1286,25 @@ pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
{
struct pci_devinfo *dinfo = device_get_ivars(child);
struct resource_list *rl = &dinfo->resources;
pcicfgregs *cfg = &dinfo->cfg;
/*
* Perform lazy resource allocation
*
* XXX add support here for SYS_RES_IOPORT and SYS_RES_MEMORY
*/
if (device_get_parent(child) == dev) {
if ((type == SYS_RES_IRQ) && (cfg->intline == 255)) {
cfg->intline = PCIB_ROUTE_INTERRUPT(
device_get_parent(dev), pci_get_slot(child),
cfg->intpin);
if (cfg->intline != 255) {
/* XXX write back to PCI space? */
resource_list_add(rl, SYS_RES_IRQ, 0,
cfg->intline, cfg->intline, 1);
}
}
}
return resource_list_alloc(rl, dev, child, type, rid,
start, end, count, flags);