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Add MSI support.

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Tested on:	Acer TravelMate 6292 with 0x4229 chip.
Reviewed by:	sam@
This commit is contained in:
Alexander Motin 2008-10-24 21:21:43 +00:00
parent 6f6487c338
commit fe16530885
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=184233
1 changed files with 6 additions and 1 deletions
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7
sys/dev/iwn/if_iwn.c
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@ -253,7 +253,7 @@ iwn_attach(device_t dev)
struct iwn_softc *sc = (struct iwn_softc *)device_get_softc(dev);
struct ieee80211com *ic;
struct ifnet *ifp;
int i, error;
int i, error, result;
sc->sc_dev = dev;
@ -282,6 +282,9 @@ iwn_attach(device_t dev)
sc->sc_st = rman_get_bustag(sc->mem);
sc->sc_sh = rman_get_bushandle(sc->mem);
sc->irq_rid = 0;
if ((result = pci_msi_count(dev)) == 1 &&
pci_alloc_msi(dev, &result) == 0)
sc->irq_rid = 1;
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
RF_ACTIVE | RF_SHAREABLE);
if (sc->irq == NULL) {
@ -487,6 +490,8 @@ iwn_cleanup(device_t dev)
if (sc->irq != NULL) {
bus_teardown_intr(dev, sc->irq, sc->sc_ih);
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
if (sc->irq_rid == 1)
pci_release_msi(dev);
}
if (sc->mem != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);