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vrpciu.c revision 1.13
      1 /*	$NetBSD: vrpciu.c,v 1.13 2003/06/15 23:09:00 fvdl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2001 Enami Tsugutomo.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/param.h>
     30 #include <sys/systm.h>
     31 #include <sys/device.h>
     32 
     33 #include <machine/bus.h>
     34 #include <machine/bus_space_hpcmips.h>
     35 #include <machine/bus_dma_hpcmips.h>
     36 #include <machine/config_hook.h>
     37 #include <machine/platid.h>
     38 #include <machine/platid_mask.h>
     39 
     40 #include <dev/pci/pcivar.h>
     41 #include <dev/pci/pcidevs.h>
     42 #include <dev/pci/pciidereg.h>
     43 
     44 #include <hpcmips/vr/icureg.h>
     45 #include <hpcmips/vr/vripif.h>
     46 #include <hpcmips/vr/vrpciureg.h>
     47 
     48 #include "pci.h"
     49 
     50 #ifdef DEBUG
     51 #define	DPRINTF(args)	printf args
     52 #else
     53 #define	DPRINTF(args)
     54 #endif
     55 
     56 struct vrpciu_softc {
     57 	struct device sc_dev;
     58 
     59 	vrip_chipset_tag_t sc_vc;
     60 	bus_space_tag_t sc_iot;
     61 	bus_space_handle_t sc_ioh;
     62 	void *sc_ih;
     63 
     64 	struct vrc4173bcu_softc *sc_bcu; /* vrc4173bcu */
     65 
     66 	struct hpcmips_pci_chipset sc_pc;
     67 };
     68 
     69 static void	vrpciu_write(struct vrpciu_softc *, int, u_int32_t);
     70 static u_int32_t
     71 		vrpciu_read(struct vrpciu_softc *, int);
     72 #ifdef DEBUG
     73 static void	vrpciu_write_2(struct vrpciu_softc *, int, u_int16_t)
     74 	__attribute__((unused));
     75 static u_int16_t
     76 		vrpciu_read_2(struct vrpciu_softc *, int);
     77 #endif
     78 static int	vrpciu_match(struct device *, struct cfdata *, void *);
     79 static void	vrpciu_attach(struct device *, struct device *, void *);
     80 #if NPCI > 0
     81 static int	vrpciu_print(void *, const char *);
     82 #endif
     83 static int	vrpciu_intr(void *);
     84 static void	vrpciu_attach_hook(struct device *, struct device *,
     85 		    struct pcibus_attach_args *);
     86 static int	vrpciu_bus_maxdevs(pci_chipset_tag_t, int);
     87 static int	vrpciu_bus_devorder(pci_chipset_tag_t, int, char *);
     88 static pcitag_t	vrpciu_make_tag(pci_chipset_tag_t, int, int, int);
     89 static void	vrpciu_decompose_tag(pci_chipset_tag_t, pcitag_t, int *, int *,
     90 		    int *);
     91 static pcireg_t	vrpciu_conf_read(pci_chipset_tag_t, pcitag_t, int);
     92 static void	vrpciu_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
     93 static int	vrpciu_intr_map(struct pci_attach_args *, pci_intr_handle_t *);
     94 static const char *vrpciu_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
     95 static const struct evcnt *vrpciu_intr_evcnt(pci_chipset_tag_t,
     96 		    pci_intr_handle_t);
     97 static void	*vrpciu_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
     98 		    int, int (*)(void *), void *);
     99 static void	vrpciu_intr_disestablish(pci_chipset_tag_t, void *);
    100 
    101 CFATTACH_DECL(vrpciu, sizeof(struct vrpciu_softc),
    102     vrpciu_match, vrpciu_attach, NULL, NULL);
    103 
    104 static void
    105 vrpciu_write(struct vrpciu_softc *sc, int offset, u_int32_t val)
    106 {
    107 
    108 	bus_space_write_4(sc->sc_iot, sc->sc_ioh, offset, val);
    109 }
    110 
    111 static u_int32_t
    112 vrpciu_read(struct vrpciu_softc *sc, int offset)
    113 {
    114 
    115 	return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, offset));
    116 }
    117 
    118 #ifdef DEBUG
    119 static void
    120 vrpciu_write_2(struct vrpciu_softc *sc, int offset, u_int16_t val)
    121 {
    122 
    123 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, offset, val);
    124 }
    125 
    126 static u_int16_t
    127 vrpciu_read_2(struct vrpciu_softc *sc, int offset)
    128 {
    129 
    130 	return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, offset));
    131 }
    132 #endif
    133 
    134 static int
    135 vrpciu_match(struct device *parent, struct cfdata *match, void *aux)
    136 {
    137 
    138 	return (1);
    139 }
    140 
    141 static void
    142 vrpciu_attach(struct device *parent, struct device *self, void *aux)
    143 {
    144 	struct vrpciu_softc *sc = (struct vrpciu_softc *)self;
    145 	pci_chipset_tag_t pc = &sc->sc_pc;
    146 	struct vrip_attach_args *va = aux;
    147 #if defined(DEBUG) || NPCI > 0
    148 	u_int32_t reg;
    149 #endif
    150 #if NPCI > 0
    151 	struct bus_space_tag_hpcmips *iot;
    152 	char tmpbuf[16];
    153 	struct pcibus_attach_args pba;
    154 #endif
    155 
    156 	sc->sc_vc = va->va_vc;
    157 	sc->sc_iot = va->va_iot;
    158 	if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 0,
    159 	    &sc->sc_ioh)) {
    160 		printf(": couldn't map io space\n");
    161 		return;
    162 	}
    163 
    164 	sc->sc_ih = vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY,
    165 	    vrpciu_intr, sc);
    166 	if (sc->sc_ih == NULL) {
    167 		printf(": couldn't establish interrupt\n");
    168 		return;
    169 	}
    170 
    171 	/* Enable level 2 interrupt */
    172 	vrip_intr_setmask2(va->va_vc, sc->sc_ih, PCIINT_INT0, 1);
    173 
    174 	printf("\n");
    175 
    176 #ifdef DEBUG
    177 #define	DUMP_MAW(sc, name, reg) do {					\
    178 	printf("%s: %s =\t0x%08x\n", (sc)->sc_dev.dv_xname,		\
    179 	    (name), (reg));						\
    180 	printf("%s:\tIBA/MASK =\t0x%08x/0x%08x (0x%08x - 0x%08x)\n",	\
    181 	    (sc)->sc_dev.dv_xname,					\
    182 	    reg & VRPCIU_MAW_IBAMASK, VRPCIU_MAW_ADDRMASK(reg),		\
    183 	    VRPCIU_MAW_ADDR(reg),					\
    184 	    VRPCIU_MAW_ADDR(reg) + VRPCIU_MAW_SIZE(reg));		\
    185 	printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname,		\
    186 	    reg & VRPCIU_MAW_WINEN);					\
    187 	printf("%s:\tPCIADR =\t0x%08x\n", (sc)->sc_dev.dv_xname,	\
    188 	    VRPCIU_MAW_PCIADDR(reg));					\
    189 } while (0)
    190 #define	DUMP_TAW(sc, name, reg) do {				\
    191 	printf("%s: %s =\t\t0x%08x\n", (sc)->sc_dev.dv_xname,	\
    192 	    (name), (reg));					\
    193 	printf("%s:\tMASK =\t0x%08x\n", (sc)->sc_dev.dv_xname,	\
    194 	    VRPCIU_TAW_ADDRMASK(reg));				\
    195 	printf("%s:\tWINEN =\t0x%08x\n", (sc)->sc_dev.dv_xname,	\
    196 	    reg & VRPCIU_TAW_WINEN);				\
    197 	printf("%s:\tIBA =\t0x%08x\n", (sc)->sc_dev.dv_xname,	\
    198 	    VRPCIU_TAW_IBA(reg));				\
    199 } while (0)
    200 	reg = vrpciu_read(sc, VRPCIU_MMAW1REG);
    201 	DUMP_MAW(sc, "MMAW1", reg);
    202 	reg = vrpciu_read(sc, VRPCIU_MMAW2REG);
    203 	DUMP_MAW(sc, "MMAW2", reg);
    204 	reg = vrpciu_read(sc, VRPCIU_TAW1REG);
    205 	DUMP_TAW(sc, "TAW1", reg);
    206 	reg = vrpciu_read(sc, VRPCIU_TAW2REG);
    207 	DUMP_TAW(sc, "TAW2", reg);
    208 	reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
    209 	DUMP_MAW(sc, "MIOAW", reg);
    210 	printf("%s: BUSERRAD =\t0x%08x\n", sc->sc_dev.dv_xname,
    211 	    vrpciu_read(sc, VRPCIU_BUSERRADREG));
    212 	printf("%s: INTCNTSTA =\t0x%08x\n", sc->sc_dev.dv_xname,
    213 	    vrpciu_read(sc, VRPCIU_INTCNTSTAREG));
    214 	printf("%s: EXACC =\t0x%08x\n", sc->sc_dev.dv_xname,
    215 	    vrpciu_read(sc, VRPCIU_EXACCREG));
    216 	printf("%s: RECONT =\t0x%08x\n", sc->sc_dev.dv_xname,
    217 	    vrpciu_read(sc, VRPCIU_RECONTREG));
    218 	printf("%s: PCIEN =\t0x%08x\n", sc->sc_dev.dv_xname,
    219 	    vrpciu_read(sc, VRPCIU_ENREG));
    220 	printf("%s: CLOCKSEL =\t0x%08x\n", sc->sc_dev.dv_xname,
    221 	    vrpciu_read(sc, VRPCIU_CLKSELREG));
    222 	printf("%s: TRDYV =\t0x%08x\n", sc->sc_dev.dv_xname,
    223 	    vrpciu_read(sc, VRPCIU_TRDYVREG));
    224 	printf("%s: CLKRUN =\t0x%08x\n", sc->sc_dev.dv_xname,
    225 	    vrpciu_read_2(sc, VRPCIU_CLKRUNREG));
    226 	printf("%s: IDREG =\t0x%08x\n", sc->sc_dev.dv_xname,
    227 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_ID_REG));
    228 	reg = vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG);
    229 	printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname, reg);
    230 	vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG, reg);
    231 	printf("%s: CSR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    232 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_COMMAND_STATUS_REG));
    233 	printf("%s: CLASS =\t0x%08x\n", sc->sc_dev.dv_xname,
    234 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_CLASS_REG));
    235 	printf("%s: BHLC =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    236 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_BHLC_REG));
    237 	printf("%s: MAIL =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    238 	    vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MAILREG));
    239 	printf("%s: MBA1 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    240 	    vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA1REG));
    241 	printf("%s: MBA2 =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    242 	    vrpciu_read(sc, VRPCIU_CONF_BASE + VRPCIU_CONF_MBA2REG));
    243 	printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    244 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
    245 #if 0
    246 	vrpciu_write(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG,
    247 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG) | 0x01);
    248 	printf("%s: INTR =\t\t0x%08x\n", sc->sc_dev.dv_xname,
    249 	    vrpciu_read(sc, VRPCIU_CONF_BASE + PCI_INTERRUPT_REG));
    250 #endif
    251 #endif
    252 
    253 	pc->pc_dev = &sc->sc_dev;
    254 	pc->pc_attach_hook = vrpciu_attach_hook;
    255 	pc->pc_bus_maxdevs = vrpciu_bus_maxdevs;
    256 	pc->pc_bus_devorder = vrpciu_bus_devorder;
    257 	pc->pc_make_tag = vrpciu_make_tag;
    258 	pc->pc_decompose_tag = vrpciu_decompose_tag;
    259 	pc->pc_conf_read = vrpciu_conf_read;
    260 	pc->pc_conf_write = vrpciu_conf_write;
    261 	pc->pc_intr_map = vrpciu_intr_map;
    262 	pc->pc_intr_string = vrpciu_intr_string;
    263 	pc->pc_intr_evcnt = vrpciu_intr_evcnt;
    264 	pc->pc_intr_establish = vrpciu_intr_establish;
    265 	pc->pc_intr_disestablish = vrpciu_intr_disestablish;
    266 
    267 #if 0
    268 	{
    269 		int i;
    270 
    271 		for (i = 0; i < 8; i++)
    272 			printf("%s: ID_REG(0, 0, %d) = 0x%08x\n",
    273 			    sc->sc_dev.dv_xname, i,
    274 			    pci_conf_read(pc, pci_make_tag(pc, 0, 0, i),
    275 				PCI_ID_REG));
    276 	}
    277 #endif
    278 
    279 #if NPCI > 0
    280 	memset(&pba, 0, sizeof(pba));
    281 	pba.pba_busname = "pci";
    282 
    283 	/* For now, just inherit window mappings set by WinCE.  XXX. */
    284 
    285 	iot = hpcmips_alloc_bus_space_tag();
    286 	reg = vrpciu_read(sc, VRPCIU_MIOAWREG);
    287 	snprintf(tmpbuf, sizeof(tmpbuf), "%s/iot",
    288 	    sc->sc_dev.dv_xname);
    289 	hpcmips_init_bus_space(iot, (struct bus_space_tag_hpcmips *)sc->sc_iot,
    290 	    tmpbuf, VRPCIU_MAW_ADDR(reg), VRPCIU_MAW_SIZE(reg));
    291 	pba.pba_iot = &iot->bst;
    292 
    293 	/*
    294 	 * Just use system bus space tag.  It works since WinCE maps
    295 	 * PCI bus space at same offset.  But this isn't right thing
    296 	 * of course.  XXX.
    297 	 */
    298 	pba.pba_memt = sc->sc_iot;
    299 	pba.pba_dmat = &hpcmips_default_bus_dma_tag.bdt;
    300 	pba.pba_dmat64 = NULL;
    301 	pba.pba_bus = 0;
    302 	pba.pba_bridgetag = NULL;
    303 
    304 	if (platid_match(&platid, &platid_mask_MACH_LASER5_L_BOARD)) {
    305 		/*
    306 		 * fix PCI device configration for L-Router.
    307 		 */
    308 		/* change IDE controller to native mode */
    309 		reg = pci_conf_read(pc, pci_make_tag(pc, 0, 16, 0),
    310 				    PCI_CLASS_REG);
    311 		reg |= PCIIDE_INTERFACE_PCI(0) << PCI_INTERFACE_SHIFT;
    312 		reg |= PCIIDE_INTERFACE_PCI(1) << PCI_INTERFACE_SHIFT;
    313 		pci_conf_write(pc, pci_make_tag(pc, 0, 16, 0), PCI_CLASS_REG,
    314 			       reg);
    315 		/* fix broken BAR setting of fxp0, fxp1 */
    316 		pci_conf_write(pc, pci_make_tag(pc, 0, 0, 0), PCI_MAPREG_START,
    317 			       0x11100000);
    318 		pci_conf_write(pc, pci_make_tag(pc, 0, 1, 0), PCI_MAPREG_START,
    319 			       0x11200000);
    320 	}
    321 
    322 	pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
    323 	    PCI_FLAGS_MRL_OKAY;
    324 	pba.pba_pc = pc;
    325 
    326 	config_found(self, &pba, vrpciu_print);
    327 #endif
    328 }
    329 
    330 #if NPCI > 0
    331 static int
    332 vrpciu_print(void *aux, const char *pnp)
    333 {
    334 	struct pcibus_attach_args *pba = aux;
    335 
    336 	if (pnp != NULL)
    337 		aprint_normal("%s at %s", pba->pba_busname, pnp);
    338 	else
    339 		aprint_normal(" bus %d", pba->pba_bus);
    340 
    341 	return (UNCONF);
    342 }
    343 #endif
    344 
    345 /*
    346  * Handle PCI error interrupts.
    347  */
    348 int
    349 vrpciu_intr(void *arg)
    350 {
    351 	struct vrpciu_softc *sc = (struct vrpciu_softc *)arg;
    352 	u_int32_t isr, baddr;
    353 
    354 	isr = vrpciu_read(sc, VRPCIU_INTCNTSTAREG);
    355 	baddr = vrpciu_read(sc, VRPCIU_BUSERRADREG);
    356 	printf("%s: status=0x%08x  bad addr=0x%08x\n",
    357 	    sc->sc_dev.dv_xname, isr, baddr);
    358 	return ((isr & 0x0f) ? 1 : 0);
    359 }
    360 
    361 void
    362 vrpciu_attach_hook(struct device *parent, struct device *self,
    363     struct pcibus_attach_args *pba)
    364 {
    365 
    366 	return;
    367 }
    368 
    369 int
    370 vrpciu_bus_maxdevs(pci_chipset_tag_t pc, int busno)
    371 {
    372 
    373 	return (32);
    374 }
    375 
    376 int
    377 vrpciu_bus_devorder(pci_chipset_tag_t pc, int busno, char *devs)
    378 {
    379 	int i, dev;
    380 	char priorities[32];
    381 	static pcireg_t ids[] = {
    382 		/* these devices should be attached first */
    383 		PCI_ID_CODE(PCI_VENDOR_NEC, PCI_PRODUCT_NEC_VRC4173_BCU),
    384 	};
    385 
    386 	/* scan PCI devices and check the id table */
    387 	memset(priorities, 0, sizeof(priorities));
    388 	for (dev = 0; dev < 32; dev++) {
    389 		pcireg_t id;
    390 		id = pci_conf_read(pc, pci_make_tag(pc, 0, dev, 0),PCI_ID_REG);
    391 		for (i = 0; i < sizeof(ids)/sizeof(*ids); i++)
    392 			if (id == ids[i])
    393 				priorities[dev] = 1;
    394 	}
    395 
    396 	/* fill order array */
    397 	for (i = 1; 0 <= i; i--)
    398 		for (dev = 0; dev < 32; dev++)
    399 			if (priorities[dev] == i)
    400 				*devs++ = dev;
    401 
    402 	return (32);
    403 }
    404 
    405 pcitag_t
    406 vrpciu_make_tag(pci_chipset_tag_t pc, int bus, int device, int function)
    407 {
    408 
    409 	return ((bus << 16) | (device << 11) | (function << 8));
    410 }
    411 
    412 void
    413 vrpciu_decompose_tag(pci_chipset_tag_t pc, pcitag_t tag, int *bp, int *dp,
    414     int *fp)
    415 {
    416 
    417 	if (bp != NULL)
    418 		*bp = (tag >> 16) & 0xff;
    419 	if (dp != NULL)
    420 		*dp = (tag >> 11) & 0x1f;
    421 	if (fp != NULL)
    422 		*fp = (tag >> 8) & 0x07;
    423 }
    424 
    425 pcireg_t
    426 vrpciu_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
    427 {
    428 	struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
    429 	u_int32_t val;
    430 	int bus, device, function;
    431 
    432 	pci_decompose_tag(pc, tag, &bus, &device, &function);
    433 	if (bus == 0) {
    434 		if (device > 21)
    435 			return ((pcitag_t)-1);
    436 		tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
    437 	} else
    438 		tag |= VRPCIU_CONF_TYPE1;
    439 
    440 	vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
    441 	val = vrpciu_read(sc, VRPCIU_CONFDREG);
    442 #if 0
    443 	printf("%s: conf_read: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
    444 	    sc->sc_dev.dv_xname, (u_int32_t)tag, reg, val);
    445 #endif
    446 	return (val);
    447 }
    448 
    449 void
    450 vrpciu_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
    451     pcireg_t data)
    452 {
    453 	struct vrpciu_softc *sc = (struct vrpciu_softc *)pc->pc_dev;
    454 	int bus, device, function;
    455 
    456 #if 0
    457 	printf("%s: conf_write: tag = 0x%08x, reg = 0x%x, val = 0x%08x\n",
    458 	    sc->sc_dev.dv_xname, (u_int32_t)tag, reg, (u_int32_t)data);
    459 #endif
    460 	vrpciu_decompose_tag(pc, tag, &bus, &device, &function);
    461 	if (bus == 0) {
    462 		if (device > 21)
    463 			return;
    464 		tag = (1 << (device + 11)) | (function << 8); /* Type 0 */
    465 	} else
    466 		tag |= VRPCIU_CONF_TYPE1;
    467 
    468 	vrpciu_write(sc, VRPCIU_CONFAREG, tag | reg);
    469 	vrpciu_write(sc, VRPCIU_CONFDREG, data);
    470 }
    471 
    472 int
    473 vrpciu_intr_map(struct pci_attach_args *pa, pci_intr_handle_t *ihp)
    474 {
    475 	pci_chipset_tag_t pc = pa->pa_pc;
    476 	pcitag_t intrtag = pa->pa_intrtag;
    477 	int bus, dev, func;
    478 #ifdef DEBUG
    479 	int line = pa->pa_intrline;
    480 	int pin = pa->pa_intrpin;
    481 #endif
    482 
    483 	pci_decompose_tag(pc, intrtag, &bus, &dev, &func);
    484 	DPRINTF(("%s(%d, %d, %d): line = %d, pin = %d\n", pc->pc_dev->dv_xname,
    485 	    bus, dev, func, line, pin));
    486 
    487 	*ihp = CONFIG_HOOK_PCIINTR_ID(bus, dev, func);
    488 
    489 	return (0);
    490 }
    491 
    492 const char *
    493 vrpciu_intr_string(pci_chipset_tag_t pc, pci_intr_handle_t ih)
    494 {
    495 	static char irqstr[sizeof("pciintr") + 16];
    496 
    497 	snprintf(irqstr, sizeof(irqstr), "pciintr %d:%d:%d",
    498 	    CONFIG_HOOK_PCIINTR_BUS((int)ih),
    499 	    CONFIG_HOOK_PCIINTR_DEVICE((int)ih),
    500 	    CONFIG_HOOK_PCIINTR_FUNCTION((int)ih));
    501 
    502 	return (irqstr);
    503 }
    504 
    505 const struct evcnt *
    506 vrpciu_intr_evcnt(pci_chipset_tag_t pc, pci_intr_handle_t ih)
    507 {
    508 
    509 	/* XXX for now, no evcnt parent reported */
    510 
    511 	return (NULL);
    512 }
    513 
    514 void *
    515 vrpciu_intr_establish(pci_chipset_tag_t pc, pci_intr_handle_t ih, int level,
    516     int (*func)(void *), void *arg)
    517 {
    518 
    519 	if (ih == -1)
    520 		return (NULL);
    521 	DPRINTF(("vrpciu_intr_establish: %lx\n", ih));
    522 
    523 	return (config_hook(CONFIG_HOOK_PCIINTR, ih, CONFIG_HOOK_EXCLUSIVE,
    524 	    (int (*)(void *, int, long, void *))func, arg));
    525 }
    526 
    527 void
    528 vrpciu_intr_disestablish(pci_chipset_tag_t pc, void *cookie)
    529 {
    530 
    531 	DPRINTF(("vrpciu_intr_disestablish: %p\n", cookie));
    532 	config_unhook(cookie);
    533 }
    534