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ebus.c revision 1.14
      1 /*	$NetBSD: ebus.c,v 1.14 2000/06/29 07:37:54 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999, 2000 Matthew R. Green
      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  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     23  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  */
     30 
     31 #include "opt_ddb.h"
     32 
     33 /*
     34  * UltraSPARC 5 and beyond ebus support.
     35  *
     36  * note that this driver is far from complete:
     37  *	- ebus2 dma code is completely unwritten
     38  *	- interrupt establish code is completely unwritten
     39  *	- bus map code is written and appears to work
     40  */
     41 
     42 #undef DEBUG
     43 #define DEBUG
     44 
     45 #ifdef DEBUG
     46 #define	EDB_PROM	0x01
     47 #define EDB_CHILD	0x02
     48 #define	EDB_INTRMAP	0x04
     49 #define EDB_BUSMAP	0x08
     50 #define EDB_BUSDMA	0x10
     51 #define EDB_INTR	0x20
     52 int ebus_debug = 0;
     53 #define DPRINTF(l, s)   do { if (ebus_debug & l) printf s; } while (0)
     54 #else
     55 #define DPRINTF(l, s)
     56 #endif
     57 
     58 #include <sys/param.h>
     59 #include <sys/conf.h>
     60 #include <sys/device.h>
     61 #include <sys/errno.h>
     62 #include <sys/extent.h>
     63 #include <sys/malloc.h>
     64 #include <sys/systm.h>
     65 #include <sys/time.h>
     66 
     67 #define _SPARC_BUS_DMA_PRIVATE
     68 #include <machine/bus.h>
     69 #include <machine/autoconf.h>
     70 
     71 #include <dev/pci/pcivar.h>
     72 #include <dev/pci/pcireg.h>
     73 #include <dev/pci/pcidevs.h>
     74 
     75 #include <sparc64/dev/iommureg.h>
     76 #include <sparc64/dev/iommuvar.h>
     77 #include <sparc64/dev/psychoreg.h>
     78 #include <sparc64/dev/psychovar.h>
     79 #include <sparc64/dev/ebusreg.h>
     80 #include <sparc64/dev/ebusvar.h>
     81 #include <sparc64/sparc64/cache.h>
     82 
     83 int	ebus_match __P((struct device *, struct cfdata *, void *));
     84 void	ebus_attach __P((struct device *, struct device *, void *));
     85 
     86 struct cfattach ebus_ca = {
     87 	sizeof(struct ebus_softc), ebus_match, ebus_attach
     88 };
     89 
     90 int	ebus_setup_attach_args __P((struct ebus_softc *, int,
     91 	    struct ebus_attach_args *));
     92 void	ebus_destroy_attach_args __P((struct ebus_attach_args *));
     93 int	ebus_print __P((void *, const char *));
     94 void	ebus_find_ino __P((struct ebus_softc *, struct ebus_attach_args *));
     95 int	ebus_find_node __P((struct pci_attach_args *));
     96 
     97 /*
     98  * here are our bus space and bus dma routines.
     99  */
    100 static int ebus_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t,
    101 				int, bus_space_handle_t *));
    102 static int _ebus_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t,
    103 				bus_size_t, int, vaddr_t,
    104 				bus_space_handle_t *));
    105 static void *ebus_intr_establish __P((bus_space_tag_t, int, int,
    106 				int (*) __P((void *)), void *));
    107 
    108 static int ebus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
    109 			  bus_size_t, struct proc *, int));
    110 static void ebus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
    111 static void ebus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
    112 				  bus_size_t, int));
    113 int ebus_dmamem_alloc __P((bus_dma_tag_t, bus_size_t, bus_size_t, bus_size_t,
    114 			   bus_dma_segment_t *, int, int *, int));
    115 void ebus_dmamem_free __P((bus_dma_tag_t, bus_dma_segment_t *, int));
    116 int ebus_dmamem_map __P((bus_dma_tag_t, bus_dma_segment_t *, int, size_t,
    117 			 caddr_t *, int));
    118 void ebus_dmamem_unmap __P((bus_dma_tag_t, caddr_t, size_t));
    119 
    120 int
    121 ebus_match(parent, match, aux)
    122 	struct device *parent;
    123 	struct cfdata *match;
    124 	void *aux;
    125 {
    126 	struct pci_attach_args *pa = aux;
    127 
    128 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
    129 	    PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN &&
    130 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_EBUS &&
    131 	    ebus_find_node(pa))
    132 		return (1);
    133 
    134 	return (0);
    135 }
    136 
    137 /*
    138  * attach an ebus and all it's children.  this code is modeled
    139  * after the sbus code which does similar things.
    140  */
    141 void
    142 ebus_attach(parent, self, aux)
    143 	struct device *parent, *self;
    144 	void *aux;
    145 {
    146 	struct ebus_softc *sc = (struct ebus_softc *)self;
    147 	struct pci_attach_args *pa = aux;
    148 	struct ebus_attach_args eba;
    149 	struct ebus_interrupt_map_mask *immp;
    150 	int node, nmapmask, rv;
    151 	char devinfo[256];
    152 
    153 	printf("\n");
    154 
    155 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
    156 	printf("%s: %s, revision 0x%02x\n", self->dv_xname, devinfo,
    157 	    PCI_REVISION(pa->pa_class));
    158 
    159 	sc->sc_parent = (struct psycho_softc *)parent;
    160 	sc->sc_bustag = pa->pa_memt;
    161 	sc->sc_childbustag = ebus_alloc_bus_tag(sc, PCI_MEMORY_BUS_SPACE);
    162 	sc->sc_dmatag = ebus_alloc_dma_tag(sc, pa->pa_dmat);
    163 
    164 	node = ebus_find_node(pa);
    165 	if (node == 0)
    166 		panic("could not find ebus node");
    167 
    168 	sc->sc_node = node;
    169 
    170 	/*
    171 	 * fill in our softc with information from the prom
    172 	 */
    173 	sc->sc_intmap = NULL;
    174 	sc->sc_range = NULL;
    175 	rv = getprop(node, "interrupt-map", sizeof(struct ebus_interrupt_map),
    176 	    &sc->sc_nintmap, (void **)&sc->sc_intmap);
    177 	if (rv)
    178 		panic("could not get ebus interrupt-map");
    179 
    180 	immp = &sc->sc_intmapmask;
    181 	rv = getprop(node, "interrupt-map-mask",
    182 	    sizeof(struct ebus_interrupt_map_mask), &nmapmask,
    183 	    (void **)&immp);
    184 	if (rv)
    185 		panic("could not get ebus interrupt-map-mask");
    186 	if (nmapmask != 1)
    187 		panic("ebus interrupt-map-mask is broken");
    188 
    189 	rv = getprop(node, "ranges", sizeof(struct ebus_ranges),
    190 	    &sc->sc_nrange, (void **)&sc->sc_range);
    191 	if (rv)
    192 		panic("could not get ebus ranges");
    193 
    194 	/*
    195 	 * now attach all our children
    196 	 */
    197 	DPRINTF(EDB_CHILD, ("ebus node %08x, searching children...\n", node));
    198 	for (node = firstchild(node); node; node = nextsibling(node)) {
    199 		char *name = getpropstring(node, "name");
    200 
    201 		if (ebus_setup_attach_args(sc, node, &eba) != 0) {
    202 			printf("ebus_attach: %s: incomplete\n", name);
    203 			continue;
    204 		} else {
    205 			DPRINTF(EDB_CHILD, ("- found child `%s', attaching\n", eba.ea_name));
    206 			(void)config_found(self, &eba, ebus_print);
    207 		}
    208 		ebus_destroy_attach_args(&eba);
    209 	}
    210 }
    211 
    212 int
    213 ebus_setup_attach_args(sc, node, ea)
    214 	struct ebus_softc	*sc;
    215 	int			node;
    216 	struct ebus_attach_args	*ea;
    217 {
    218 	int	n, rv;
    219 
    220 	bzero(ea, sizeof(struct ebus_attach_args));
    221 	rv = getprop(node, "name", 1, &n, (void **)&ea->ea_name);
    222 	if (rv != 0)
    223 		return (rv);
    224 	ea->ea_name[n] = '\0';
    225 
    226 	ea->ea_node = node;
    227 	ea->ea_bustag = sc->sc_childbustag;
    228 	ea->ea_dmatag = sc->sc_dmatag;
    229 
    230 	rv = getprop(node, "reg", sizeof(struct ebus_regs), &ea->ea_nregs,
    231 	    (void **)&ea->ea_regs);
    232 	if (rv)
    233 		return (rv);
    234 
    235 	rv = getprop(node, "address", sizeof(u_int32_t), &ea->ea_nvaddrs,
    236 	    (void **)&ea->ea_vaddrs);
    237 	if (rv != ENOENT) {
    238 		if (rv)
    239 			return (rv);
    240 
    241 		if (ea->ea_nregs != ea->ea_nvaddrs)
    242 			printf("ebus loses: device %s: %d regs and %d addrs\n",
    243 			    ea->ea_name, ea->ea_nregs, ea->ea_nvaddrs);
    244 	} else
    245 		ea->ea_nvaddrs = 0;
    246 
    247 	if (getprop(node, "interrupts", sizeof(u_int32_t), &ea->ea_nintrs,
    248 	    (void **)&ea->ea_intrs))
    249 		ea->ea_nintrs = 0;
    250 	else
    251 		ebus_find_ino(sc, ea);
    252 
    253 	return (0);
    254 }
    255 
    256 void
    257 ebus_destroy_attach_args(ea)
    258 	struct ebus_attach_args	*ea;
    259 {
    260 
    261 	if (ea->ea_name)
    262 		free((void *)ea->ea_name, M_DEVBUF);
    263 	if (ea->ea_regs)
    264 		free((void *)ea->ea_regs, M_DEVBUF);
    265 	if (ea->ea_intrs)
    266 		free((void *)ea->ea_intrs, M_DEVBUF);
    267 	if (ea->ea_vaddrs)
    268 		free((void *)ea->ea_vaddrs, M_DEVBUF);
    269 }
    270 
    271 int
    272 ebus_print(aux, p)
    273 	void *aux;
    274 	const char *p;
    275 {
    276 	struct ebus_attach_args *ea = aux;
    277 	int i;
    278 
    279 	if (p)
    280 		printf("%s at %s", ea->ea_name, p);
    281 	for (i = 0; i < ea->ea_nregs; i++)
    282 		printf(" addr %x-%x", ea->ea_regs[i].lo,
    283 		    ea->ea_regs[i].lo + ea->ea_regs[i].size - 1);
    284 	for (i = 0; i < ea->ea_nintrs; i++)
    285 		printf(" ipl %d", ea->ea_intrs[i]);
    286 	return (UNCONF);
    287 }
    288 
    289 /*
    290  * find the INO values for each interrupt and fill them in.
    291  *
    292  * for each "reg" property of this device, mask it's hi and lo
    293  * values with the "interrupt-map-mask"'s hi/lo values, and also
    294  * mask the interrupt number with the interrupt mask.  search the
    295  * "interrupt-map" list for matching values of hi, lo and interrupt
    296  * to give the INO for this interrupt.
    297  */
    298 void
    299 ebus_find_ino(sc, ea)
    300 	struct ebus_softc *sc;
    301 	struct ebus_attach_args *ea;
    302 {
    303 	u_int32_t hi, lo, intr;
    304 	int i, j, k;
    305 
    306 	DPRINTF(EDB_INTRMAP, ("ebus_find_ino: searching %d interrupts", ea->ea_nintrs));
    307 	for (j = 0; j < ea->ea_nintrs; j++) {
    308 		intr = ea->ea_intrs[j] & sc->sc_intmapmask.intr;
    309 
    310 		DPRINTF(EDB_INTRMAP, ("; intr %x masked to %x", ea->ea_intrs[j], intr));
    311 		for (i = 0; i < ea->ea_nregs; i++) {
    312 			hi = ea->ea_regs[i].hi & sc->sc_intmapmask.hi;
    313 			lo = ea->ea_regs[i].lo & sc->sc_intmapmask.lo;
    314 
    315 			DPRINTF(EDB_INTRMAP, ("; reg hi.lo %08x.08x masked to %08x.%08x", ea->ea_regs[i].hi, ea->ea_regs[i].lo, hi, lo));
    316 			for (k = 0; k < sc->sc_nintmap; k++) {
    317 				DPRINTF(EDB_INTRMAP, ("; checking hi.lo %08x.%08x intr %x", sc->sc_intmap[k].hi, sc->sc_intmap[k].lo, sc->sc_intmap[k].intr));
    318 				if (hi == sc->sc_intmap[k].hi &&
    319 				    lo == sc->sc_intmap[k].lo &&
    320 				    intr == sc->sc_intmap[k].intr) {
    321 					ea->ea_intrs[j] =
    322 						sc->sc_intmap[k].cintr|INTMAP_OBIO;
    323 					DPRINTF(EDB_INTRMAP, ("; FOUND IT! changing to %d\n", sc->sc_intmap[k].cintr));
    324 					goto next_intr;
    325 				}
    326 			}
    327 		}
    328 next_intr:
    329 	}
    330 }
    331 
    332 /*
    333  * what is our OFW node?  this depends on our pci chipset tag
    334  * having it's "node" value set to the OFW node of the PCI bus,
    335  * see the simba driver.
    336  */
    337 int
    338 ebus_find_node(pa)
    339 	struct pci_attach_args *pa;
    340 {
    341 	int node = pa->pa_pc->node;
    342 	int n, *ap;
    343 	int pcibus, bus, dev, fn;
    344 
    345 	DPRINTF(EDB_PROM, ("ebus_find_node: looking at pci node %08x\n", node));
    346 	for (node = firstchild(node); node; node = nextsibling(node)) {
    347 		char *name = getpropstring(node, "name");
    348 
    349 		DPRINTF(EDB_PROM, ("ebus_find_node: looking at PCI device `%s', node = %08x\n", name, node));
    350 		/* must be "ebus" */
    351 		if (strcmp(name, "ebus") != 0)
    352 			continue;
    353 
    354 		/* pull the PCI bus out of the pa_tag */
    355 		pcibus = (pa->pa_tag >> 16) & 0xff;
    356 		DPRINTF(EDB_PROM, ("; pcibus %d dev %d fn %d\n", pcibus, pa->pa_device, pa->pa_function));
    357 
    358 		/* get the PCI bus/device/function for this node */
    359 		ap = NULL;
    360 		if (getprop(node, "reg", sizeof(int), &n,
    361 		    (void **)&ap))
    362 			continue;
    363 
    364 		bus = (ap[0] >> 16) & 0xff;
    365 		dev = (ap[0] >> 11) & 0x1f;
    366 		fn = (ap[0] >> 8) & 0x7;
    367 
    368 		DPRINTF(EDB_PROM, ("; looking for bus %d dev %d fn %d\n", pcibus, pa->pa_device, pa->pa_function));
    369 		if (pa->pa_device != dev ||
    370 		    pa->pa_function != fn ||
    371 		    pcibus != bus)
    372 			continue;
    373 
    374 		DPRINTF(EDB_PROM, ("; found it, returning %08x\n", node));
    375 		/* found it! */
    376 		free(ap, M_DEVBUF);
    377 		return (node);
    378 	}
    379 
    380 	/* damn! */
    381 	return (0);
    382 }
    383 
    384 /*
    385  * bus space and bus dma below here
    386  */
    387 bus_space_tag_t
    388 ebus_alloc_bus_tag(sc, type)
    389 	struct ebus_softc *sc;
    390 	int type;
    391 {
    392 	bus_space_tag_t bt;
    393 
    394 	bt = (bus_space_tag_t)
    395 		malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT);
    396 	if (bt == NULL)
    397 		panic("could not allocate ebus bus tag");
    398 
    399 	bzero(bt, sizeof *bt);
    400 	bt->cookie = sc;
    401 	bt->parent = sc->sc_bustag;
    402 	bt->type = type;
    403 	bt->sparc_bus_map = _ebus_bus_map;
    404 	bt->sparc_bus_mmap = ebus_bus_mmap;
    405 	bt->sparc_intr_establish = ebus_intr_establish;
    406 	return (bt);
    407 }
    408 
    409 /* XXX? */
    410 bus_dma_tag_t
    411 ebus_alloc_dma_tag(sc, pdt)
    412 	struct ebus_softc *sc;
    413 	bus_dma_tag_t pdt;
    414 {
    415 	bus_dma_tag_t dt;
    416 
    417 	dt = (bus_dma_tag_t)
    418 		malloc(sizeof(struct sparc_bus_dma_tag), M_DEVBUF, M_NOWAIT);
    419 	if (dt == NULL)
    420 		panic("could not allocate ebus dma tag");
    421 
    422 	bzero(dt, sizeof *dt);
    423 	dt->_cookie = sc;
    424 	dt->_parent = pdt;
    425 #define PCOPY(x)	dt->x = pdt->x
    426 	PCOPY(_dmamap_create);
    427 	PCOPY(_dmamap_destroy);
    428 	dt->_dmamap_load = ebus_dmamap_load;
    429 	PCOPY(_dmamap_load_mbuf);
    430 	PCOPY(_dmamap_load_uio);
    431 	PCOPY(_dmamap_load_raw);
    432 	dt->_dmamap_unload = ebus_dmamap_unload;
    433 	dt->_dmamap_sync = ebus_dmamap_sync;
    434 	dt->_dmamem_alloc = ebus_dmamem_alloc;
    435 	dt->_dmamem_free = ebus_dmamem_free;
    436 	dt->_dmamem_map = ebus_dmamem_map;
    437 	dt->_dmamem_unmap = ebus_dmamem_unmap;
    438 	PCOPY(_dmamem_mmap);
    439 #undef	PCOPY
    440 	return (dt);
    441 }
    442 
    443 /*
    444  * bus space support.  <sparc64/dev/psychoreg.h> has a discussion
    445  * about PCI physical addresses, which also applies to ebus.
    446  */
    447 static int
    448 _ebus_bus_map(t, btype, offset, size, flags, vaddr, hp)
    449 	bus_space_tag_t t;
    450 	bus_type_t btype;
    451 	bus_addr_t offset;
    452 	bus_size_t size;
    453 	int	flags;
    454 	vaddr_t vaddr;
    455 	bus_space_handle_t *hp;
    456 {
    457 	struct ebus_softc *sc = t->cookie;
    458 	bus_addr_t hi, lo;
    459 	int i;
    460 
    461 	DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_map: type %d off %016llx sz %x flags %d va %p", (int)t->type, (u_int64_t)offset, (int)size, (int)flags, vaddr));
    462 
    463 	hi = offset >> 32UL;
    464 	lo = offset & 0xffffffff;
    465 	DPRINTF(EDB_BUSMAP, (" (hi %08x lo %08x)", (u_int)hi, (u_int)lo));
    466 	for (i = 0; i < sc->sc_nrange; i++) {
    467 		bus_addr_t pciaddr;
    468 
    469 		if (hi != sc->sc_range[i].child_hi)
    470 			continue;
    471 		if (lo < sc->sc_range[i].child_lo ||
    472 		    (lo + size) > (sc->sc_range[i].child_lo + sc->sc_range[i].size))
    473 			continue;
    474 
    475 		pciaddr = ((bus_addr_t)sc->sc_range[i].phys_mid << 32UL) |
    476 				       sc->sc_range[i].phys_lo;
    477 		pciaddr += lo;
    478 		DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_map: mapping paddr offset %qx pciaddr %qx\n",
    479 			       offset, pciaddr));
    480 		/* pass it onto the psycho */
    481 		return (bus_space_map2(sc->sc_bustag, t->type, pciaddr,
    482 					size, flags, vaddr, hp));
    483 	}
    484 	DPRINTF(EDB_BUSMAP, (": FAILED\n"));
    485 	return (EINVAL);
    486 }
    487 
    488 static int
    489 ebus_bus_mmap(t, btype, paddr, flags, hp)
    490 	bus_space_tag_t t;
    491 	bus_type_t btype;
    492 	bus_addr_t paddr;
    493 	int flags;
    494 	bus_space_handle_t *hp;
    495 {
    496 	bus_addr_t offset = paddr;
    497 	struct ebus_softc *sc = t->cookie;
    498 	int i;
    499 
    500 	for (i = 0; i < sc->sc_nrange; i++) {
    501 		bus_addr_t paddr = ((bus_addr_t)sc->sc_range[i].child_hi << 32) |
    502 		    sc->sc_range[i].child_lo;
    503 
    504 		if (offset != paddr)
    505 			continue;
    506 
    507 		DPRINTF(EDB_BUSMAP, ("\n_ebus_bus_mmap: mapping paddr %qx\n", paddr));
    508 		return (bus_space_mmap(sc->sc_bustag, 0, paddr,
    509 				       flags, hp));
    510 	}
    511 
    512 	return (-1);
    513 }
    514 
    515 /*
    516  * install an interrupt handler for a PCI device
    517  */
    518 void *
    519 ebus_intr_establish(t, level, flags, handler, arg)
    520 	bus_space_tag_t t;
    521 	int level;
    522 	int flags;
    523 	int (*handler) __P((void *));
    524 	void *arg;
    525 {
    526 	return (bus_intr_establish(t->parent, level, flags, handler, arg));
    527 }
    528 
    529 /*
    530  * bus dma support
    531  */
    532 int
    533 ebus_dmamap_load(t, map, buf, buflen, p, flags)
    534 	bus_dma_tag_t t;
    535 	bus_dmamap_t map;
    536 	void *buf;
    537 	bus_size_t buflen;
    538 	struct proc *p;
    539 	int flags;
    540 {
    541 	struct ebus_softc *sc = t->_cookie;
    542 
    543 	return (iommu_dvmamap_load(t, &sc->sc_parent->sc_is, map, buf, buflen,
    544 	    p, flags));
    545 }
    546 
    547 void
    548 ebus_dmamap_unload(t, map)
    549 	bus_dma_tag_t t;
    550 	bus_dmamap_t map;
    551 {
    552 	struct ebus_softc *sc = t->_cookie;
    553 
    554 	iommu_dvmamap_unload(t, &sc->sc_parent->sc_is, map);
    555 }
    556 
    557 void
    558 ebus_dmamap_sync(t, map, offset, len, ops)
    559 	bus_dma_tag_t t;
    560 	bus_dmamap_t map;
    561 	bus_addr_t offset;
    562 	bus_size_t len;
    563 	int ops;
    564 {
    565 	struct ebus_softc *sc = t->_cookie;
    566 
    567 	iommu_dvmamap_sync(t, &sc->sc_parent->sc_is, map, offset, len, ops);
    568 	bus_dmamap_sync(t->_parent, map, offset, len, ops);
    569 }
    570 
    571 int
    572 ebus_dmamem_alloc(t, size, alignment, boundary, segs, nsegs, rsegs, flags)
    573 	bus_dma_tag_t t;
    574 	bus_size_t size;
    575 	bus_size_t alignment;
    576 	bus_size_t boundary;
    577 	bus_dma_segment_t *segs;
    578 	int nsegs;
    579 	int *rsegs;
    580 	int flags;
    581 {
    582 	struct ebus_softc *sc = t->_cookie;
    583 
    584 	return (iommu_dvmamem_alloc(t, &sc->sc_parent->sc_is, size, alignment,
    585 	    boundary, segs, nsegs, rsegs, flags));
    586 }
    587 
    588 void
    589 ebus_dmamem_free(t, segs, nsegs)
    590 	bus_dma_tag_t t;
    591 	bus_dma_segment_t *segs;
    592 	int nsegs;
    593 {
    594 	struct ebus_softc *sc = t->_cookie;
    595 
    596 	iommu_dvmamem_free(t, &sc->sc_parent->sc_is, segs, nsegs);
    597 }
    598 
    599 int
    600 ebus_dmamem_map(t, segs, nsegs, size, kvap, flags)
    601 	bus_dma_tag_t t;
    602 	bus_dma_segment_t *segs;
    603 	int nsegs;
    604 	size_t size;
    605 	caddr_t *kvap;
    606 	int flags;
    607 {
    608 	struct ebus_softc *sc = t->_cookie;
    609 
    610 	return (iommu_dvmamem_map(t, &sc->sc_parent->sc_is, segs, nsegs,
    611 	    size, kvap, flags));
    612 }
    613 
    614 void
    615 ebus_dmamem_unmap(t, kva, size)
    616 	bus_dma_tag_t t;
    617 	caddr_t kva;
    618 	size_t size;
    619 {
    620 	struct ebus_softc *sc = t->_cookie;
    621 
    622 	iommu_dvmamem_unmap(t, &sc->sc_parent->sc_is, kva, size);
    623 }
    624