C++ pci_intr_map函数代码示例

void
ral_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct ral_pci_softc *psc = (struct ral_pci_softc *)self;
	struct rt2560_softc *sc = &psc->sc_sc;
	struct pci_attach_args *pa = aux;
	const char *intrstr;
	pci_intr_handle_t ih;
	pcireg_t memtype;
	int error;

	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_RALINK) {
		switch (PCI_PRODUCT(pa->pa_id)) {
		case PCI_PRODUCT_RALINK_RT2560:
			psc->sc_opns = &ral_rt2560_opns;
			break;
		case PCI_PRODUCT_RALINK_RT2561:
		case PCI_PRODUCT_RALINK_RT2561S:
		case PCI_PRODUCT_RALINK_RT2661:
			psc->sc_opns = &ral_rt2661_opns;
			break;
		default:
			psc->sc_opns = &ral_rt2860_opns;
			break;
		}
	} else {
		/* all other vendors are RT2860 only */
		psc->sc_opns = &ral_rt2860_opns;
	}
	sc->sc_dmat = pa->pa_dmat;
	psc->sc_pc = pa->pa_pc;

	/* map control/status registers */
	memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, RAL_PCI_BAR0);
	error = pci_mapreg_map(pa, RAL_PCI_BAR0, memtype, 0, &sc->sc_st,
	    &sc->sc_sh, NULL, &psc->sc_mapsize, 0);
	if (error != 0) {
		printf(": can't map mem space\n");
		return;
	}

	if (pci_intr_map(pa, &ih) != 0) {
		printf(": can't map interrupt\n");
		return;
	}

	intrstr = pci_intr_string(psc->sc_pc, ih);
	psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET,
	    psc->sc_opns->intr, sc, sc->sc_dev.dv_xname);
	if (psc->sc_ih == NULL) {
		printf(": can't establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		return;
	}
	printf(": %s", intrstr);

	(*psc->sc_opns->attach)(sc, PCI_PRODUCT(pa->pa_id));
}

void
amdiic_attach(struct device *parent, struct device *self, void *aux)
{
	struct amdiic_softc *sc = (struct amdiic_softc *)self;
	struct pci_attach_args *pa = aux;
	struct i2cbus_attach_args iba;
	pcireg_t conf;
	bus_size_t iosize;
	pci_intr_handle_t ih;
	const char *intrstr = NULL;

	/* Map I/O space */
	if (pci_mapreg_map(pa, AMD8111_SMB_BASE, PCI_MAPREG_TYPE_IO, 0,
	    &sc->sc_iot, &sc->sc_ioh, NULL, &iosize, 0)) {
		printf(": can't map i/o space\n");
		return;
	}

	/* Read configuration */
	conf = pci_conf_read(pa->pa_pc, pa->pa_tag, AMD8111_SMB_MISC);
	DPRINTF((": conf 0x%08x", conf));

	sc->sc_poll = 1;
	if (conf & AMD8111_SMB_MISC_SCIEN) {
		/* No PCI IRQ */
		printf(": SCI");
	} else if (conf & AMD8111_SMB_MISC_INTEN) {
		/* Install interrupt handler */
		if (pci_intr_map(pa, &ih) == 0) {
			intrstr = pci_intr_string(pa->pa_pc, ih);
			sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
			    amdiic_intr, sc, sc->sc_dev.dv_xname);
			if (sc->sc_ih != NULL) {
				printf(": %s", intrstr);
				sc->sc_poll = 0;
			}
		}
		if (sc->sc_poll)
			printf(": polling");
	}

	printf("\n");

	/* Attach I2C bus */
	rw_init(&sc->sc_i2c_lock, "iiclk");
	sc->sc_i2c_tag.ic_cookie = sc;
	sc->sc_i2c_tag.ic_acquire_bus = amdiic_i2c_acquire_bus;
	sc->sc_i2c_tag.ic_release_bus = amdiic_i2c_release_bus;
	sc->sc_i2c_tag.ic_exec = amdiic_i2c_exec;

	bzero(&iba, sizeof(iba));
	iba.iba_name = "iic";
	iba.iba_tag = &sc->sc_i2c_tag;
	config_found(self, &iba, iicbus_print);

	return;
}

void
ral_pci_attach(device_t parent, device_t self, void *aux)
{
	struct ral_pci_softc *psc = device_private(self);
	struct rt2560_softc *sc = &psc->sc_sc;
	const struct pci_attach_args *pa = aux;
	const char *intrstr;
	bus_addr_t base;
	pci_intr_handle_t ih;
	pcireg_t reg;
	int error;

	pci_aprint_devinfo(pa, NULL);

	psc->sc_opns = (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_RALINK_RT2560) ?
	    &ral_rt2560_opns : &ral_rt2661_opns;

	sc->sc_dev = self;
	sc->sc_dmat = pa->pa_dmat;
	psc->sc_pc = pa->pa_pc;

	/* enable the appropriate bits in the PCI CSR */
	reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
	reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);

	/* map control/status registers */
	error = pci_mapreg_map(pa, RAL_PCI_BAR0, PCI_MAPREG_TYPE_MEM |
	    PCI_MAPREG_MEM_TYPE_32BIT, 0, &sc->sc_st, &sc->sc_sh, &base,
	    &psc->sc_mapsize);

	if (error != 0) {
		aprint_error(": could not map memory space\n");
		return;
	}

	if (pci_intr_map(pa, &ih) != 0) {
		aprint_error(": could not map interrupt\n");
		return;
	}

	intrstr = pci_intr_string(psc->sc_pc, ih);
	psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET,
	    psc->sc_opns->intr, sc);

	if (psc->sc_ih == NULL) {
		aprint_error(": could not establish interrupt");
		if (intrstr != NULL)
			aprint_error(" at %s", intrstr);
		aprint_error("\n");
		return;
	}
	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);

	(*psc->sc_opns->attach)(sc, PCI_PRODUCT(pa->pa_id));
}

void
mfi_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct mfi_softc	*sc = (struct mfi_softc *)self;
	struct pci_attach_args	*pa = aux;
	const struct mfi_pci_device *mpd;
	pci_intr_handle_t	ih;
	bus_size_t		size;
	pcireg_t		reg;
	int			regbar;

	mpd = mfi_pci_find_device(pa);
	if (mpd == NULL) {
		printf(": can't find matching pci device\n");
		return;
	}

	if (mpd->mpd_iop == MFI_IOP_GEN2 || mpd->mpd_iop == MFI_IOP_SKINNY)
		regbar = MFI_BAR_GEN2;
	else
		regbar = MFI_BAR;

	reg = pci_mapreg_type(pa->pa_pc, pa->pa_tag, regbar);
	if (pci_mapreg_map(pa, regbar, reg, 0,
	    &sc->sc_iot, &sc->sc_ioh, NULL, &size, MFI_PCI_MEMSIZE)) {
		printf(": can't map controller pci space\n");
		return;
	}

	sc->sc_dmat = pa->pa_dmat;

	if (pci_intr_map(pa, &ih) != 0) {
		printf(": can't map interrupt\n");
		goto unmap;
	}
	printf(": %s\n", pci_intr_string(pa->pa_pc, ih));

	sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, mfi_intr, sc,
	    sc->sc_dev.dv_xname);
	if (!sc->sc_ih) {
		printf("%s: can't establish interrupt\n", DEVNAME(sc));
		goto unmap;
	}

	if (mfi_attach(sc, mpd->mpd_iop)) {
		printf("%s: can't attach\n", DEVNAME(sc));
		goto unintr;
	}

	return;
unintr:
	pci_intr_disestablish(pa->pa_pc, sc->sc_ih);
	sc->sc_ih = NULL;
unmap:
	bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
}

void
pgt_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct pgt_pci_softc *psc = (struct pgt_pci_softc *)self;
	struct pgt_softc *sc = &psc->sc_pgt;
	struct pci_attach_args *pa = aux;
	const char *intrstr = NULL;
	pci_intr_handle_t ih;
	int error;

	sc->sc_dmat = pa->pa_dmat;
	psc->sc_pc = pa->pa_pc;

	/* remember chipset */
	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTERSIL_ISL3877)
		sc->sc_flags |= SC_ISL3877;

	/* map control / status registers */
	error = pci_mapreg_map(pa, PGT_PCI_BAR0,
	    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
	    &sc->sc_iotag, &sc->sc_iohandle, NULL, &psc->sc_mapsize, 0);
	if (error != 0) {
		printf(": can't map mem space\n");
		return;
	}

	/* map interrupt */
	if (pci_intr_map(pa, &ih) != 0) {
		printf(": can't map interrupt\n");
		return;
	}

	/* disable all interrupts */
	bus_space_write_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN, 0);
	(void)bus_space_read_4(sc->sc_iotag, sc->sc_iohandle, PGT_REG_INT_EN);
	DELAY(PGT_WRITEIO_DELAY);

	/* establish interrupt */
	intrstr = pci_intr_string(psc->sc_pc, ih);
	psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET, pgt_intr, sc,
	    sc->sc_dev.dv_xname);
	if (psc->sc_ih == NULL) {
		printf(": can't establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		return;
	}
	printf(": %s\n", intrstr);

	if (rootvp == NULL)
		mountroothook_establish(pgt_attach, sc);
	else
		pgt_attach(sc);
}

void
bwi_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct bwi_pci_softc *psc = (struct bwi_pci_softc *)self;
	struct pci_attach_args *pa = aux;
	struct bwi_softc *sc = &psc->psc_bwi;
	const char *intrstr = NULL;
	pci_intr_handle_t ih;
	pcireg_t memtype, reg;

	sc->sc_dmat = pa->pa_dmat;
	psc->psc_pc = pa->pa_pc;
	psc->psc_pcitag = pa->pa_tag;

	/* map control / status registers */
	memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0); 
	if (pci_mapreg_map(pa, BWI_PCI_BAR0, memtype, 0, &sc->sc_mem_bt,
	    &sc->sc_mem_bh, NULL, &psc->psc_mapsize, 0)) {
		printf(": can't map mem space\n");
		return;
	}

	/* map interrupt */
	if (pci_intr_map(pa, &ih) != 0) {
		printf(": can't map interrupt\n");
		return;
	}

	/* establish interrupt */
	intrstr = pci_intr_string(psc->psc_pc, ih);
	psc->psc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_NET, bwi_intr, sc,
	    sc->sc_dev.dv_xname);
	if (psc->psc_ih == NULL) {
		printf(": can't establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		return;
	}
	printf(": %s", intrstr);

	/* we need to access PCI config space from the driver */
	sc->sc_conf_write = bwi_pci_conf_write;
	sc->sc_conf_read = bwi_pci_conf_read;

	reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);

	sc->sc_pci_revid = PCI_REVISION(pa->pa_class);
	sc->sc_pci_did = PCI_PRODUCT(pa->pa_id);
	sc->sc_pci_subvid = PCI_VENDOR(reg);
	sc->sc_pci_subdid = PCI_PRODUCT(reg);

	bwi_attach(sc);
}

void
rtsx_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct rtsx_pci_softc *sc = (struct rtsx_pci_softc *)self;
	struct pci_attach_args *pa = aux;
	pci_intr_handle_t ih;
	char const *intrstr;
	bus_space_tag_t iot;
	bus_space_handle_t ioh;
	bus_size_t size;
	int flags;

	if ((pci_conf_read(pa->pa_pc, pa->pa_tag, RTSX_CFG_PCI)
	    & RTSX_CFG_ASIC) != 0) {
		printf("%s: no asic\n", sc->sc.sc_dev.dv_xname);
		return;
	}

	if (pci_intr_map_msi(pa, &ih) && pci_intr_map(pa, &ih)) {
		printf(": can't map interrupt\n");
		return;
	}

	intrstr = pci_intr_string(pa->pa_pc, ih);
	sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_SDMMC,
	    rtsx_intr, sc, sc->sc.sc_dev.dv_xname);
	if (sc->sc_ih == NULL) {
		printf(": can't establish interrupt\n");
		return;
	}
	printf(": %s\n", intrstr);

	if (pci_mem_find(pa->pa_pc, pa->pa_tag, RTSX_PCI_BAR,
	    NULL, NULL, NULL) != 0) {
		printf("%s: can't find registers\n", sc->sc.sc_dev.dv_xname);
	    	return;
	}

	if (pci_mapreg_map(pa, RTSX_PCI_BAR, PCI_MAPREG_TYPE_MEM, 0,
	    &iot, &ioh, NULL, &size, 0)) {
		printf("%s: can't map registers\n", sc->sc.sc_dev.dv_xname);
		return;
	}

	pci_set_powerstate(pa->pa_pc, pa->pa_tag, PCI_PMCSR_STATE_D0);

	if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_REALTEK_RTS5209)
		flags = RTSX_F_5209;
	else
		flags = RTSX_F_5229;

	if (rtsx_attach(&sc->sc, iot, ioh, size, pa->pa_dmat, flags) != 0)
		printf("%s: can't initialize chip\n", sc->sc.sc_dev.dv_xname);
}

static void
ahci_pci_attach(device_t parent, device_t self, void *aux)
{
	struct pci_attach_args *pa = aux;
	struct ahci_pci_softc *psc = device_private(self);
	struct ahci_softc *sc = &psc->ah_sc;
	bus_size_t size;
	char devinfo[256];
	const char *intrstr;
	pci_intr_handle_t intrhandle;
	void *ih;

	sc->sc_atac.atac_dev = self;

	if (pci_mapreg_map(pa, AHCI_PCI_ABAR,
	    PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0,
	    &sc->sc_ahcit, &sc->sc_ahcih, NULL, &size) != 0) {
		aprint_error_dev(self, "can't map ahci registers\n");
		return;
	}
	psc->sc_pc = pa->pa_pc;
	psc->sc_pcitag = pa->pa_tag;

	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
	aprint_naive(": AHCI disk controller\n");
	aprint_normal(": %s\n", devinfo);
	
	if (pci_intr_map(pa, &intrhandle) != 0) {
		aprint_error("%s: couldn't map interrupt\n", AHCINAME(sc));
		return;
	}
	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
	ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_BIO, ahci_intr, sc);
	if (ih == NULL) {
		aprint_error("%s: couldn't establish interrupt", AHCINAME(sc));
		return;
	}
	aprint_normal("%s: interrupting at %s\n", AHCINAME(sc),
	    intrstr ? intrstr : "unknown interrupt");
	sc->sc_dmat = pa->pa_dmat;

	if (PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_RAID) {
		AHCIDEBUG_PRINT(("%s: RAID mode\n", AHCINAME(sc)), DEBUG_PROBE);
		sc->sc_atac_capflags = ATAC_CAP_RAID;
	} else {
		AHCIDEBUG_PRINT(("%s: SATA mode\n", AHCINAME(sc)), DEBUG_PROBE);
	}

	ahci_attach(sc);

	if (!pmf_device_register(self, NULL, ahci_pci_resume))
		aprint_error_dev(self, "couldn't establish power handler\n");
}

void
ahci_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct ahci_pci_softc		*psc = (struct ahci_pci_softc *)self;
	struct ahci_softc		*sc = &psc->psc_ahci;
	struct pci_attach_args		*pa = aux;
	const struct ahci_device	*ad;
	pci_intr_handle_t		ih;
	int				mapped = 0;

	psc->psc_pc = pa->pa_pc;
	psc->psc_tag = pa->pa_tag;
	sc->sc_dmat = pa->pa_dmat;

	ad = ahci_lookup_device(pa);
	if (ad != NULL && ad->ad_attach != NULL) {
		if (ad->ad_attach(sc, pa) != 0) {
			/* error should be printed by ad_attach */
			return;
		}
	}

	if (!(sc->sc_flags & AHCI_F_NO_MSI))
		mapped = pci_intr_map_msi(pa, &ih) != 0 ? 0 : 1;
	
	if (!mapped && pci_intr_map(pa, &ih) != 0) {
		printf(": unable to map interrupt\n");
		return;
	}
	printf(": %s,", pci_intr_string(pa->pa_pc, ih));

	if (ahci_map_regs(psc, pa) != 0) {
		/* error already printed by ahci_map_regs */
		return;
	}

	if (ahci_map_intr(psc, pa, ih) != 0) {
		/* error already printed by ahci_map_intr */
		goto unmap;
	}

	if (ahci_attach(sc) != 0) {
		/* error printed by ahci_attach */
		goto unmap;
	}

	return;

unmap:
	ahci_unmap_regs(psc);
	return;
}

static void
mtd_pci_attach(device_t parent, device_t self, void *aux)
{
	struct pci_attach_args * const pa = aux;
	struct mtd_softc * const sc = device_private(self);
	pci_intr_handle_t ih;
	const char *intrstring = NULL;
	bus_space_tag_t iot, memt;
	bus_space_handle_t ioh, memh;
	int io_valid, mem_valid;

	sc->dev = self;
	pci_aprint_devinfo(pa, NULL);

	io_valid = (pci_mapreg_map(pa, PCI_IO_MAP_REG, PCI_MAPREG_TYPE_IO,
			0, &iot, &ioh, NULL, NULL) == 0);
	mem_valid = (pci_mapreg_map(pa, PCI_MEM_MAP_REG, PCI_MAPREG_TYPE_MEM
			| PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh,
			NULL, NULL) == 0);

	if (mem_valid) {
		sc->bus_tag = memt;
		sc->bus_handle = memh;
	} else if (io_valid) {
		sc->bus_tag = iot;
		sc->bus_handle = ioh;
	} else {
		aprint_error_dev(sc->dev, "could not map memory or i/o space\n");
		return;
	}
	sc->dma_tag = pa->pa_dmat;

	/* Do generic attach. Seems this must be done before setting IRQ */
	mtd_config(sc);

	if (pci_intr_map(pa, &ih)) {
		aprint_error_dev(sc->dev, "could not map interrupt\n");
		return;
	}
	intrstring = pci_intr_string(pa->pa_pc, ih);

	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc) == NULL) {
		aprint_error_dev(sc->dev, "could not establish interrupt");
		if (intrstring != NULL)
			aprint_error(" at %s", intrstring);
		aprint_error("\n");
		return;
	} else {
		aprint_normal_dev(sc->dev, "using %s for interrupt\n",
			intrstring ? intrstring : "unknown interrupt");
	}
}

static void
mtd_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct mtd_softc *sc = (void *)self;
	struct pci_attach_args *pa = aux;
	pci_intr_handle_t ih;
	const char *intrstr = NULL;
	bus_size_t iosize;

#ifndef MTD_USE_IO
	if (pci_mapreg_map(pa, MTD_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
	    &sc->bus_tag, &sc->bus_handle, NULL, &iosize, 0)) {
		printf(": can't map mem space\n");
		return;
	}
#else	/* MTD_USE_IO */
	if (pci_mapreg_map(pa, MTD_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
	    &sc->bus_tag, &sc->bus_handle, NULL, &iosize, 0)) {
		printf(": can't map io space\n");
		return;
	}
#endif	/* MTD_USE_IO */

	/*
	 * Allocate our interrupt.
	 */
	if (pci_intr_map(pa, &ih)) {
		printf(": couldn't map interrupt\n");
		bus_space_unmap(sc->bus_tag, sc->bus_handle, iosize);
		return;
	}

	intrstr = pci_intr_string(pa->pa_pc, ih);
	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc,
	    self->dv_xname) == NULL) {
		printf(": couldn't establish interrupt");
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		bus_space_unmap(sc->bus_tag, sc->bus_handle, iosize);
		return;
	}
	printf(": %s", intrstr);

	sc->dma_tag = pa->pa_dmat;
	mtd_config(sc);
}

int
pci_intx_alloc(const struct pci_attach_args *pa, pci_intr_handle_t **ihpp)
{
    pci_intr_handle_t *ihp;

    ihp = kmem_alloc(sizeof(*ihp), KM_SLEEP);
    if (ihp == NULL)
        return ENOMEM;

    if (pci_intr_map(pa, ihp)) {
        kmem_free(ihp, sizeof(*ihp));
        return EINVAL;
    }

    *ihpp = ihp;
    return 0;
}

void
an_pci_attach(struct device *parent, struct device *self, void *aux)
{
	struct an_softc *sc = (struct an_softc *)self;
	struct pci_attach_args *pa = aux;
	pci_intr_handle_t ih;
	bus_space_handle_t ioh;
	bus_space_tag_t iot = pa->pa_iot;
	pci_chipset_tag_t pc = pa->pa_pc;
	const char *intrstr;

	/* Map the I/O ports. */
	if (pci_mapreg_map(pa, AN_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
	    &iot, &ioh, NULL, NULL, 0) != 0) {
		printf(": can't map i/o space\n");
		return;
	}
	sc->sc_iot = iot;
	sc->sc_ioh = ioh;

	/* Map and establish the interrupt. */
	if (pci_intr_map(pa, &ih)) {
		printf("\n%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
		return;
	}
	intrstr = pci_intr_string(pc, ih);
	sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, an_intr, sc,
	    sc->sc_dev.dv_xname);
	if (sc->sc_ih == NULL) {
		printf("\n%s: couldn't establish interrupt",
		    sc->sc_dev.dv_xname);
		if (intrstr != NULL)
			printf(" at %s", intrstr);
		printf("\n");
		return;
	}
	printf(": %s", intrstr);

	sc->sc_enabled = 1;

	an_attach(sc);
}

int
genppc_pci_intx_alloc(const struct pci_attach_args *pa,
    pci_intr_handle_t **ihps)
{
	pci_intr_handle_t *handle;
	int error;

	handle = kmem_zalloc(sizeof(*handle), KM_SLEEP);
	if (handle == NULL)
		return ENOMEM;

	error = pci_intr_map(pa, handle);
	if (error != 0) {
		kmem_free(handle, sizeof(*handle));
		return error;
	}

	*ihps = handle;
	return 0;
}

int
pci_intx_alloc(const struct pci_attach_args *pa, pci_intr_handle_t **ihp)
{
	pci_intr_handle_t *pih;

	if (ihp == NULL)
		return EINVAL;

	pih = kmem_alloc(sizeof(*pih), KM_SLEEP);
	if (pih == NULL)
		return ENOMEM;

	if (pci_intr_map(pa, pih)) {
		kmem_free(pih, sizeof(*pih));
		return EINVAL;
	}

	*ihp = pih;
	return 0;
}