1 /*-
2 * Copyright (c) 2011 Nathan Whitehorn
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/module.h>
32 #include <sys/bus.h>
33 #include <sys/conf.h>
34 #include <sys/kernel.h>
35 #include <sys/rman.h>
36
37 #include <dev/ofw/openfirm.h>
38 #include <dev/ofw/ofw_pci.h>
39 #include <dev/ofw/ofw_bus.h>
40 #include <dev/ofw/ofw_bus_subr.h>
41 #include <dev/ofw/ofwpci.h>
42
43 #include <dev/pci/pcivar.h>
44 #include <dev/pci/pcireg.h>
45 #include <dev/pci/pcib_private.h>
46
47 #include <machine/bus.h>
48 #include <machine/md_var.h>
49 #include <machine/resource.h>
50
51 #include <vm/vm.h>
52 #include <vm/pmap.h>
53
54 #include "pcib_if.h"
55
56 /*
57 * If it is necessary to set another value of this for
58 * some platforms it should be set at fdt.h file
59 */
60 #ifndef PCI_MAP_INTR
61 #define PCI_MAP_INTR 4
62 #endif
63
64 #define PCI_INTR_PINS 4
65
66 /*
67 * bus interface.
68 */
69 static struct resource * ofw_pci_alloc_resource(device_t, device_t,
70 int, int *, rman_res_t, rman_res_t, rman_res_t, u_int);
71 static int ofw_pci_release_resource(device_t, device_t, int, int,
72 struct resource *);
73 static int ofw_pci_activate_resource(device_t, device_t, int, int,
74 struct resource *);
75 static int ofw_pci_deactivate_resource(device_t, device_t, int, int,
76 struct resource *);
77 static int ofw_pci_adjust_resource(device_t, device_t, int,
78 struct resource *, rman_res_t, rman_res_t);
79 static int ofw_pci_translate_resource(device_t bus, int type,
80 rman_res_t start, rman_res_t *newstart);
81
82 #ifdef __powerpc__
83 static bus_space_tag_t ofw_pci_bus_get_bus_tag(device_t, device_t);
84 #endif
85
86 /*
87 * pcib interface
88 */
89 static int ofw_pci_maxslots(device_t);
90
91 /*
92 * ofw_bus interface
93 */
94 static phandle_t ofw_pci_get_node(device_t, device_t);
95
96 /*
97 * local methods
98 */
99 static int ofw_pci_fill_ranges(phandle_t, struct ofw_pci_range *);
100 static struct rman *ofw_pci_get_rman(struct ofw_pci_softc *, int, u_int);
101
102 /*
103 * Driver methods.
104 */
105 static device_method_t ofw_pci_methods[] = {
106 /* Device interface */
107 DEVMETHOD(device_attach, ofw_pci_attach),
108
109 /* Bus interface */
110 DEVMETHOD(bus_print_child, bus_generic_print_child),
111 DEVMETHOD(bus_read_ivar, ofw_pci_read_ivar),
112 DEVMETHOD(bus_write_ivar, ofw_pci_write_ivar),
113 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
114 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
115 DEVMETHOD(bus_alloc_resource, ofw_pci_alloc_resource),
116 DEVMETHOD(bus_release_resource, ofw_pci_release_resource),
117 DEVMETHOD(bus_activate_resource, ofw_pci_activate_resource),
118 DEVMETHOD(bus_deactivate_resource, ofw_pci_deactivate_resource),
119 DEVMETHOD(bus_adjust_resource, ofw_pci_adjust_resource),
120 DEVMETHOD(bus_translate_resource, ofw_pci_translate_resource),
121 #ifdef __powerpc__
122 DEVMETHOD(bus_get_bus_tag, ofw_pci_bus_get_bus_tag),
123 #endif
124
125 /* pcib interface */
126 DEVMETHOD(pcib_maxslots, ofw_pci_maxslots),
127 DEVMETHOD(pcib_route_interrupt, ofw_pci_route_interrupt),
128 DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
129
130 /* ofw_bus interface */
131 DEVMETHOD(ofw_bus_get_node, ofw_pci_get_node),
132
133 DEVMETHOD_END
134 };
135
136 DEFINE_CLASS_0(ofw_pci, ofw_pci_driver, ofw_pci_methods, 0);
137
138 int
ofw_pci_init(device_t dev)139 ofw_pci_init(device_t dev)
140 {
141 struct ofw_pci_softc *sc;
142 phandle_t node;
143 u_int32_t busrange[2];
144 struct ofw_pci_range *rp;
145 int i, error;
146 struct ofw_pci_cell_info *cell_info;
147
148 node = ofw_bus_get_node(dev);
149 sc = device_get_softc(dev);
150 sc->sc_initialized = 1;
151 sc->sc_range = NULL;
152 sc->sc_pci_domain = device_get_unit(dev);
153
154 cell_info = (struct ofw_pci_cell_info *)malloc(sizeof(*cell_info),
155 M_DEVBUF, M_WAITOK | M_ZERO);
156
157 sc->sc_cell_info = cell_info;
158
159 if (OF_getencprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
160 busrange[0] = 0;
161
162 sc->sc_dev = dev;
163 sc->sc_node = node;
164 sc->sc_bus = busrange[0];
165
166 if (sc->sc_quirks & OFW_PCI_QUIRK_RANGES_ON_CHILDREN) {
167 phandle_t c;
168 int n, i;
169
170 sc->sc_nrange = 0;
171 for (c = OF_child(node); c != 0; c = OF_peer(c)) {
172 n = ofw_pci_nranges(c, cell_info);
173 if (n > 0)
174 sc->sc_nrange += n;
175 }
176 if (sc->sc_nrange == 0) {
177 error = ENXIO;
178 goto out;
179 }
180 sc->sc_range = malloc(sc->sc_nrange * sizeof(sc->sc_range[0]),
181 M_DEVBUF, M_WAITOK);
182 i = 0;
183 for (c = OF_child(node); c != 0; c = OF_peer(c)) {
184 n = ofw_pci_fill_ranges(c, &sc->sc_range[i]);
185 if (n > 0)
186 i += n;
187 }
188 KASSERT(i == sc->sc_nrange, ("range count mismatch"));
189 } else {
190 sc->sc_nrange = ofw_pci_nranges(node, cell_info);
191 if (sc->sc_nrange <= 0) {
192 device_printf(dev, "could not getranges\n");
193 error = ENXIO;
194 goto out;
195 }
196 sc->sc_range = malloc(sc->sc_nrange * sizeof(sc->sc_range[0]),
197 M_DEVBUF, M_WAITOK);
198 ofw_pci_fill_ranges(node, sc->sc_range);
199 }
200
201 sc->sc_io_rman.rm_type = RMAN_ARRAY;
202 sc->sc_io_rman.rm_descr = "PCI I/O Ports";
203 error = rman_init(&sc->sc_io_rman);
204 if (error != 0) {
205 device_printf(dev, "rman_init() failed. error = %d\n", error);
206 goto out;
207 }
208
209 sc->sc_mem_rman.rm_type = RMAN_ARRAY;
210 sc->sc_mem_rman.rm_descr = "PCI Non Prefetchable Memory";
211 error = rman_init(&sc->sc_mem_rman);
212 if (error != 0) {
213 device_printf(dev, "rman_init() failed. error = %d\n", error);
214 goto out;
215 }
216
217 sc->sc_pmem_rman.rm_type = RMAN_ARRAY;
218 sc->sc_pmem_rman.rm_descr = "PCI Prefetchable Memory";
219 error = rman_init(&sc->sc_pmem_rman);
220 if (error != 0) {
221 device_printf(dev, "rman_init() failed. error = %d\n", error);
222 goto out;
223 }
224
225 for (i = 0; i < sc->sc_nrange; i++) {
226 error = 0;
227 rp = sc->sc_range + i;
228
229 if (sc->sc_range_mask & ((uint64_t)1 << i))
230 continue;
231 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
232 case OFW_PCI_PHYS_HI_SPACE_CONFIG:
233 break;
234 case OFW_PCI_PHYS_HI_SPACE_IO:
235 error = rman_manage_region(&sc->sc_io_rman, rp->pci,
236 rp->pci + rp->size - 1);
237 break;
238 case OFW_PCI_PHYS_HI_SPACE_MEM32:
239 case OFW_PCI_PHYS_HI_SPACE_MEM64:
240 if (rp->pci_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) {
241 sc->sc_have_pmem = 1;
242 error = rman_manage_region(&sc->sc_pmem_rman,
243 rp->pci, rp->pci + rp->size - 1);
244 } else {
245 error = rman_manage_region(&sc->sc_mem_rman,
246 rp->pci, rp->pci + rp->size - 1);
247 }
248 break;
249 }
250
251 if (error != 0) {
252 device_printf(dev,
253 "rman_manage_region(%x, %#jx, %#jx) failed. "
254 "error = %d\n", rp->pci_hi &
255 OFW_PCI_PHYS_HI_SPACEMASK, rp->pci,
256 rp->pci + rp->size - 1, error);
257 goto out;
258 }
259 }
260
261 ofw_bus_setup_iinfo(node, &sc->sc_pci_iinfo, sizeof(cell_t));
262 return (0);
263
264 out:
265 free(cell_info, M_DEVBUF);
266 free(sc->sc_range, M_DEVBUF);
267 rman_fini(&sc->sc_io_rman);
268 rman_fini(&sc->sc_mem_rman);
269 rman_fini(&sc->sc_pmem_rman);
270
271 return (error);
272 }
273
274 int
ofw_pci_attach(device_t dev)275 ofw_pci_attach(device_t dev)
276 {
277 struct ofw_pci_softc *sc;
278 int error;
279
280 sc = device_get_softc(dev);
281 if (!sc->sc_initialized) {
282 error = ofw_pci_init(dev);
283 if (error != 0)
284 return (error);
285 }
286
287 device_add_child(dev, "pci", -1);
288 return (bus_generic_attach(dev));
289 }
290
291 static int
ofw_pci_maxslots(device_t dev)292 ofw_pci_maxslots(device_t dev)
293 {
294
295 return (PCI_SLOTMAX);
296 }
297
298 int
ofw_pci_route_interrupt(device_t bus,device_t dev,int pin)299 ofw_pci_route_interrupt(device_t bus, device_t dev, int pin)
300 {
301 struct ofw_pci_softc *sc;
302 struct ofw_pci_register reg;
303 uint32_t pintr, mintr[PCI_MAP_INTR];
304 int intrcells;
305 phandle_t iparent;
306
307 sc = device_get_softc(bus);
308 pintr = pin;
309
310 /* Fabricate imap information in case this isn't an OFW device */
311 bzero(®, sizeof(reg));
312 reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
313 (pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
314 (pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
315
316 intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev),
317 &sc->sc_pci_iinfo, ®, sizeof(reg), &pintr, sizeof(pintr),
318 mintr, sizeof(mintr), &iparent);
319 if (intrcells != 0) {
320 pintr = ofw_bus_map_intr(dev, iparent, intrcells, mintr);
321 return (pintr);
322 }
323
324 /*
325 * Maybe it's a real interrupt, not an intpin
326 */
327 if (pin > PCI_INTR_PINS)
328 return (pin);
329
330 device_printf(bus, "could not route pin %d for device %d.%d\n",
331 pin, pci_get_slot(dev), pci_get_function(dev));
332 return (PCI_INVALID_IRQ);
333 }
334
335 int
ofw_pci_read_ivar(device_t dev,device_t child,int which,uintptr_t * result)336 ofw_pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
337 {
338 struct ofw_pci_softc *sc;
339
340 sc = device_get_softc(dev);
341
342 switch (which) {
343 case PCIB_IVAR_DOMAIN:
344 *result = sc->sc_pci_domain;
345 return (0);
346 case PCIB_IVAR_BUS:
347 *result = sc->sc_bus;
348 return (0);
349 default:
350 break;
351 }
352
353 return (ENOENT);
354 }
355
356 int
ofw_pci_write_ivar(device_t dev,device_t child,int which,uintptr_t value)357 ofw_pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
358 {
359 struct ofw_pci_softc *sc;
360
361 sc = device_get_softc(dev);
362
363 switch (which) {
364 case PCIB_IVAR_BUS:
365 sc->sc_bus = value;
366 return (0);
367 default:
368 break;
369 }
370
371 return (ENOENT);
372 }
373
374 int
ofw_pci_nranges(phandle_t node,struct ofw_pci_cell_info * info)375 ofw_pci_nranges(phandle_t node, struct ofw_pci_cell_info *info)
376 {
377 ssize_t nbase_ranges;
378
379 if (info == NULL)
380 return (-1);
381
382 info->host_address_cells = 1;
383 info->size_cells = 2;
384 info->pci_address_cell = 3;
385
386 OF_getencprop(OF_parent(node), "#address-cells",
387 &(info->host_address_cells), sizeof(info->host_address_cells));
388 OF_getencprop(node, "#address-cells",
389 &(info->pci_address_cell), sizeof(info->pci_address_cell));
390 OF_getencprop(node, "#size-cells", &(info->size_cells),
391 sizeof(info->size_cells));
392
393 nbase_ranges = OF_getproplen(node, "ranges");
394 if (nbase_ranges <= 0)
395 return (-1);
396
397 return (nbase_ranges / sizeof(cell_t) /
398 (info->pci_address_cell + info->host_address_cells +
399 info->size_cells));
400 }
401
402 static struct resource *
ofw_pci_alloc_resource(device_t bus,device_t child,int type,int * rid,rman_res_t start,rman_res_t end,rman_res_t count,u_int flags)403 ofw_pci_alloc_resource(device_t bus, device_t child, int type, int *rid,
404 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
405 {
406 struct ofw_pci_softc *sc;
407 struct resource *rv;
408 struct rman *rm;
409 int needactivate;
410
411 needactivate = flags & RF_ACTIVE;
412 flags &= ~RF_ACTIVE;
413
414 sc = device_get_softc(bus);
415
416 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
417 if (type == PCI_RES_BUS) {
418 return (pci_domain_alloc_bus(sc->sc_pci_domain, child, rid,
419 start, end, count, flags | needactivate));
420 }
421 #endif
422
423 rm = ofw_pci_get_rman(sc, type, flags);
424 if (rm == NULL) {
425 return (bus_generic_alloc_resource(bus, child, type, rid,
426 start, end, count, flags | needactivate));
427 }
428
429 rv = rman_reserve_resource(rm, start, end, count, flags, child);
430 if (rv == NULL) {
431 device_printf(bus, "failed to reserve resource for %s\n",
432 device_get_nameunit(child));
433 return (NULL);
434 }
435
436 rman_set_rid(rv, *rid);
437
438 if (needactivate) {
439 if (bus_activate_resource(child, type, *rid, rv) != 0) {
440 device_printf(bus,
441 "failed to activate resource for %s\n",
442 device_get_nameunit(child));
443 rman_release_resource(rv);
444 return (NULL);
445 }
446 }
447
448 return (rv);
449 }
450
451 static int
ofw_pci_release_resource(device_t bus,device_t child,int type,int rid,struct resource * res)452 ofw_pci_release_resource(device_t bus, device_t child, int type, int rid,
453 struct resource *res)
454 {
455 struct ofw_pci_softc *sc;
456 struct rman *rm;
457 int error;
458
459 sc = device_get_softc(bus);
460
461 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
462 if (type == PCI_RES_BUS)
463 return (pci_domain_release_bus(sc->sc_pci_domain, child, rid,
464 res));
465 #endif
466
467 rm = ofw_pci_get_rman(sc, type, rman_get_flags(res));
468 if (rm == NULL) {
469 return (bus_generic_release_resource(bus, child, type, rid,
470 res));
471 }
472 KASSERT(rman_is_region_manager(res, rm), ("rman mismatch"));
473
474 if (rman_get_flags(res) & RF_ACTIVE) {
475 error = bus_deactivate_resource(child, type, rid, res);
476 if (error != 0)
477 return (error);
478 }
479 return (rman_release_resource(res));
480 }
481
482 static int
ofw_pci_translate_resource(device_t bus,int type,rman_res_t start,rman_res_t * newstart)483 ofw_pci_translate_resource(device_t bus, int type, rman_res_t start,
484 rman_res_t *newstart)
485 {
486 struct ofw_pci_softc *sc;
487 struct ofw_pci_range *rp;
488 int space;
489
490 sc = device_get_softc(bus);
491
492 /*
493 * Map this through the ranges list
494 */
495 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange &&
496 rp->pci_hi != 0; rp++) {
497 if (start < rp->pci || start >= rp->pci + rp->size)
498 continue;
499
500 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
501 case OFW_PCI_PHYS_HI_SPACE_IO:
502 space = SYS_RES_IOPORT;
503 break;
504 case OFW_PCI_PHYS_HI_SPACE_MEM32:
505 case OFW_PCI_PHYS_HI_SPACE_MEM64:
506 space = SYS_RES_MEMORY;
507 break;
508 default:
509 space = -1;
510 }
511
512 if (type == space) {
513 start += (rp->host - rp->pci);
514 break;
515 }
516 }
517 *newstart = start;
518 return (0);
519 }
520
521 static int
ofw_pci_activate_resource(device_t bus,device_t child,int type,int rid,struct resource * res)522 ofw_pci_activate_resource(device_t bus, device_t child, int type, int rid,
523 struct resource *res)
524 {
525 struct ofw_pci_softc *sc;
526 bus_space_handle_t handle;
527 bus_space_tag_t tag;
528 struct ofw_pci_range *rp;
529 vm_paddr_t start;
530 int space;
531 int rv;
532
533 sc = device_get_softc(bus);
534
535 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY) {
536 return (bus_generic_activate_resource(bus, child, type, rid,
537 res));
538 }
539
540 start = (vm_paddr_t)rman_get_start(res);
541
542 /*
543 * Map this through the ranges list
544 */
545 for (rp = sc->sc_range; rp < sc->sc_range + sc->sc_nrange &&
546 rp->pci_hi != 0; rp++) {
547 if (start < rp->pci || start >= rp->pci + rp->size)
548 continue;
549
550 switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
551 case OFW_PCI_PHYS_HI_SPACE_IO:
552 space = SYS_RES_IOPORT;
553 break;
554 case OFW_PCI_PHYS_HI_SPACE_MEM32:
555 case OFW_PCI_PHYS_HI_SPACE_MEM64:
556 space = SYS_RES_MEMORY;
557 break;
558 default:
559 space = -1;
560 }
561
562 if (type == space) {
563 start += (rp->host - rp->pci);
564 break;
565 }
566 }
567
568 if (bootverbose)
569 printf("ofw_pci mapdev: start %jx, len %jd\n",
570 (rman_res_t)start, rman_get_size(res));
571
572 tag = BUS_GET_BUS_TAG(child, child);
573 if (tag == NULL)
574 return (ENOMEM);
575
576 rman_set_bustag(res, tag);
577 rv = bus_space_map(tag, start,
578 rman_get_size(res), 0, &handle);
579 if (rv != 0)
580 return (ENOMEM);
581
582 rman_set_bushandle(res, handle);
583 rman_set_virtual(res, (void *)handle); /* XXX for powerpc only ? */
584
585 return (rman_activate_resource(res));
586 }
587
588 #ifdef __powerpc__
589 static bus_space_tag_t
ofw_pci_bus_get_bus_tag(device_t bus,device_t child)590 ofw_pci_bus_get_bus_tag(device_t bus, device_t child)
591 {
592
593 return (&bs_le_tag);
594 }
595 #endif
596
597 static int
ofw_pci_deactivate_resource(device_t bus,device_t child,int type,int rid,struct resource * res)598 ofw_pci_deactivate_resource(device_t bus, device_t child, int type, int rid,
599 struct resource *res)
600 {
601 vm_size_t psize;
602
603 if (type != SYS_RES_IOPORT && type != SYS_RES_MEMORY) {
604 return (bus_generic_deactivate_resource(bus, child, type, rid,
605 res));
606 }
607
608 psize = rman_get_size(res);
609 pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
610
611 return (rman_deactivate_resource(res));
612 }
613
614 static int
ofw_pci_adjust_resource(device_t bus,device_t child,int type,struct resource * res,rman_res_t start,rman_res_t end)615 ofw_pci_adjust_resource(device_t bus, device_t child, int type,
616 struct resource *res, rman_res_t start, rman_res_t end)
617 {
618 struct rman *rm;
619 struct ofw_pci_softc *sc;
620
621 sc = device_get_softc(bus);
622 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
623 if (type == PCI_RES_BUS)
624 return (pci_domain_adjust_bus(sc->sc_pci_domain, child, res,
625 start, end));
626 #endif
627
628 rm = ofw_pci_get_rman(sc, type, rman_get_flags(res));
629 if (rm == NULL) {
630 return (bus_generic_adjust_resource(bus, child, type, res,
631 start, end));
632 }
633 KASSERT(rman_is_region_manager(res, rm), ("rman mismatch"));
634 KASSERT(!(rman_get_flags(res) & RF_ACTIVE),
635 ("active resources cannot be adjusted"));
636
637 return (rman_adjust_resource(res, start, end));
638 }
639
640 static phandle_t
ofw_pci_get_node(device_t bus,device_t dev)641 ofw_pci_get_node(device_t bus, device_t dev)
642 {
643 struct ofw_pci_softc *sc;
644
645 sc = device_get_softc(bus);
646 /* We only have one child, the PCI bus, which needs our own node. */
647
648 return (sc->sc_node);
649 }
650
651 static int
ofw_pci_fill_ranges(phandle_t node,struct ofw_pci_range * ranges)652 ofw_pci_fill_ranges(phandle_t node, struct ofw_pci_range *ranges)
653 {
654 int host_address_cells = 1, pci_address_cells = 3, size_cells = 2;
655 cell_t *base_ranges;
656 ssize_t nbase_ranges;
657 int nranges;
658 int i, j, k;
659
660 OF_getencprop(OF_parent(node), "#address-cells", &host_address_cells,
661 sizeof(host_address_cells));
662 OF_getencprop(node, "#address-cells", &pci_address_cells,
663 sizeof(pci_address_cells));
664 OF_getencprop(node, "#size-cells", &size_cells, sizeof(size_cells));
665
666 nbase_ranges = OF_getproplen(node, "ranges");
667 if (nbase_ranges <= 0)
668 return (-1);
669 nranges = nbase_ranges / sizeof(cell_t) /
670 (pci_address_cells + host_address_cells + size_cells);
671
672 base_ranges = malloc(nbase_ranges, M_DEVBUF, M_WAITOK);
673 OF_getencprop(node, "ranges", base_ranges, nbase_ranges);
674
675 for (i = 0, j = 0; i < nranges; i++) {
676 ranges[i].pci_hi = base_ranges[j++];
677 ranges[i].pci = 0;
678 for (k = 0; k < pci_address_cells - 1; k++) {
679 ranges[i].pci <<= 32;
680 ranges[i].pci |= base_ranges[j++];
681 }
682 ranges[i].host = 0;
683 for (k = 0; k < host_address_cells; k++) {
684 ranges[i].host <<= 32;
685 ranges[i].host |= base_ranges[j++];
686 }
687 ranges[i].size = 0;
688 for (k = 0; k < size_cells; k++) {
689 ranges[i].size <<= 32;
690 ranges[i].size |= base_ranges[j++];
691 }
692 }
693
694 free(base_ranges, M_DEVBUF);
695 return (nranges);
696 }
697
698 static struct rman *
ofw_pci_get_rman(struct ofw_pci_softc * sc,int type,u_int flags)699 ofw_pci_get_rman(struct ofw_pci_softc *sc, int type, u_int flags)
700 {
701
702 switch (type) {
703 case SYS_RES_IOPORT:
704 return (&sc->sc_io_rman);
705 case SYS_RES_MEMORY:
706 if (sc->sc_have_pmem && (flags & RF_PREFETCHABLE))
707 return (&sc->sc_pmem_rman);
708 else
709 return (&sc->sc_mem_rman);
710 default:
711 break;
712 }
713
714 return (NULL);
715 }
716