1 /*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 #include "opt_acpi.h"
32 #include "opt_pci.h"
33
34 #include <sys/param.h>
35 #include <sys/bus.h>
36 #include <sys/kernel.h>
37 #include <sys/limits.h>
38 #include <sys/malloc.h>
39 #include <sys/module.h>
40 #include <sys/rman.h>
41 #include <sys/sysctl.h>
42
43 #include <contrib/dev/acpica/include/acpi.h>
44 #include <contrib/dev/acpica/include/accommon.h>
45
46 #include <dev/acpica/acpivar.h>
47
48 #include <machine/pci_cfgreg.h>
49 #include <dev/pci/pcireg.h>
50 #include <dev/pci/pcivar.h>
51 #include <dev/pci/pcib_private.h>
52 #include "pcib_if.h"
53
54 #include <dev/acpica/acpi_pcibvar.h>
55
56 /* Hooks for the ACPI CA debugging infrastructure. */
57 #define _COMPONENT ACPI_BUS
58 ACPI_MODULE_NAME("PCI_ACPI")
59
60 struct acpi_hpcib_softc {
61 device_t ap_dev;
62 ACPI_HANDLE ap_handle;
63 bus_dma_tag_t ap_dma_tag;
64 int ap_flags;
65 uint32_t ap_osc_ctl;
66
67 int ap_segment; /* PCI domain */
68 int ap_bus; /* bios-assigned bus number */
69 int ap_addr; /* device/func of PCI-Host bridge */
70
71 ACPI_BUFFER ap_prt; /* interrupt routing table */
72 #ifdef NEW_PCIB
73 struct pcib_host_resources ap_host_res;
74 #endif
75 };
76
77 static int acpi_pcib_acpi_probe(device_t bus);
78 static int acpi_pcib_acpi_attach(device_t bus);
79 static int acpi_pcib_read_ivar(device_t dev, device_t child,
80 int which, uintptr_t *result);
81 static int acpi_pcib_write_ivar(device_t dev, device_t child,
82 int which, uintptr_t value);
83 static uint32_t acpi_pcib_read_config(device_t dev, u_int bus,
84 u_int slot, u_int func, u_int reg, int bytes);
85 static void acpi_pcib_write_config(device_t dev, u_int bus,
86 u_int slot, u_int func, u_int reg, uint32_t data,
87 int bytes);
88 static int acpi_pcib_acpi_route_interrupt(device_t pcib,
89 device_t dev, int pin);
90 static int acpi_pcib_alloc_msi(device_t pcib, device_t dev,
91 int count, int maxcount, int *irqs);
92 static int acpi_pcib_map_msi(device_t pcib, device_t dev,
93 int irq, uint64_t *addr, uint32_t *data);
94 static int acpi_pcib_alloc_msix(device_t pcib, device_t dev,
95 int *irq);
96 static struct resource *acpi_pcib_acpi_alloc_resource(device_t dev,
97 device_t child, int type, int *rid,
98 rman_res_t start, rman_res_t end, rman_res_t count,
99 u_int flags);
100 #ifdef NEW_PCIB
101 static int acpi_pcib_acpi_adjust_resource(device_t dev,
102 device_t child, int type, struct resource *r,
103 rman_res_t start, rman_res_t end);
104 #ifdef PCI_RES_BUS
105 static int acpi_pcib_acpi_release_resource(device_t dev,
106 device_t child, int type, int rid,
107 struct resource *r);
108 #endif
109 #endif
110 static int acpi_pcib_request_feature(device_t pcib, device_t dev,
111 enum pci_feature feature);
112 static bus_dma_tag_t acpi_pcib_get_dma_tag(device_t bus, device_t child);
113
114 static device_method_t acpi_pcib_acpi_methods[] = {
115 /* Device interface */
116 DEVMETHOD(device_probe, acpi_pcib_acpi_probe),
117 DEVMETHOD(device_attach, acpi_pcib_acpi_attach),
118 DEVMETHOD(device_shutdown, bus_generic_shutdown),
119 DEVMETHOD(device_suspend, bus_generic_suspend),
120 DEVMETHOD(device_resume, bus_generic_resume),
121
122 /* Bus interface */
123 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
124 DEVMETHOD(bus_write_ivar, acpi_pcib_write_ivar),
125 DEVMETHOD(bus_alloc_resource, acpi_pcib_acpi_alloc_resource),
126 #ifdef NEW_PCIB
127 DEVMETHOD(bus_adjust_resource, acpi_pcib_acpi_adjust_resource),
128 #else
129 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
130 #endif
131 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
132 DEVMETHOD(bus_release_resource, acpi_pcib_acpi_release_resource),
133 #else
134 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
135 #endif
136 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
137 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
138 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
139 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
140 DEVMETHOD(bus_get_cpus, acpi_pcib_get_cpus),
141 DEVMETHOD(bus_get_dma_tag, acpi_pcib_get_dma_tag),
142
143 /* pcib interface */
144 DEVMETHOD(pcib_maxslots, pcib_maxslots),
145 DEVMETHOD(pcib_read_config, acpi_pcib_read_config),
146 DEVMETHOD(pcib_write_config, acpi_pcib_write_config),
147 DEVMETHOD(pcib_route_interrupt, acpi_pcib_acpi_route_interrupt),
148 DEVMETHOD(pcib_alloc_msi, acpi_pcib_alloc_msi),
149 DEVMETHOD(pcib_release_msi, pcib_release_msi),
150 DEVMETHOD(pcib_alloc_msix, acpi_pcib_alloc_msix),
151 DEVMETHOD(pcib_release_msix, pcib_release_msix),
152 DEVMETHOD(pcib_map_msi, acpi_pcib_map_msi),
153 DEVMETHOD(pcib_power_for_sleep, acpi_pcib_power_for_sleep),
154 DEVMETHOD(pcib_request_feature, acpi_pcib_request_feature),
155
156 DEVMETHOD_END
157 };
158
159 DEFINE_CLASS_0(pcib, acpi_pcib_acpi_driver, acpi_pcib_acpi_methods,
160 sizeof(struct acpi_hpcib_softc));
161 DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, 0, 0);
162 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
163
164 static int
165 acpi_pcib_acpi_probe(device_t dev)
166 {
167 ACPI_DEVICE_INFO *devinfo;
168 ACPI_HANDLE h;
169 int root;
170
171 if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL ||
172 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
173 return (ENXIO);
174 root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0;
175 AcpiOsFree(devinfo);
176 if (!root || pci_cfgregopen() == 0)
177 return (ENXIO);
178
179 device_set_desc(dev, "ACPI Host-PCI bridge");
180 return (0);
181 }
182
183 #ifdef NEW_PCIB
184 static ACPI_STATUS
185 acpi_pcib_producer_handler(ACPI_RESOURCE *res, void *context)
186 {
187 struct acpi_hpcib_softc *sc;
188 UINT64 length, min, max;
189 u_int flags;
190 int error, type;
191
192 sc = context;
193 switch (res->Type) {
194 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
195 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
196 panic("host bridge has depenedent resources");
197 case ACPI_RESOURCE_TYPE_ADDRESS16:
198 case ACPI_RESOURCE_TYPE_ADDRESS32:
199 case ACPI_RESOURCE_TYPE_ADDRESS64:
200 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
201 if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER)
202 break;
203 switch (res->Type) {
204 case ACPI_RESOURCE_TYPE_ADDRESS16:
205 min = res->Data.Address16.Address.Minimum;
206 max = res->Data.Address16.Address.Maximum;
207 length = res->Data.Address16.Address.AddressLength;
208 break;
209 case ACPI_RESOURCE_TYPE_ADDRESS32:
210 min = res->Data.Address32.Address.Minimum;
211 max = res->Data.Address32.Address.Maximum;
212 length = res->Data.Address32.Address.AddressLength;
213 break;
214 case ACPI_RESOURCE_TYPE_ADDRESS64:
215 min = res->Data.Address64.Address.Minimum;
216 max = res->Data.Address64.Address.Maximum;
217 length = res->Data.Address64.Address.AddressLength;
218 break;
219 default:
220 KASSERT(res->Type ==
221 ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64,
222 ("should never happen"));
223 min = res->Data.ExtAddress64.Address.Minimum;
224 max = res->Data.ExtAddress64.Address.Maximum;
225 length = res->Data.ExtAddress64.Address.AddressLength;
226 break;
227 }
228 if (length == 0)
229 break;
230 if (min + length - 1 != max &&
231 (res->Data.Address.MinAddressFixed != ACPI_ADDRESS_FIXED ||
232 res->Data.Address.MaxAddressFixed != ACPI_ADDRESS_FIXED))
233 break;
234 flags = 0;
235 switch (res->Data.Address.ResourceType) {
236 case ACPI_MEMORY_RANGE:
237 type = SYS_RES_MEMORY;
238 if (res->Type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) {
239 if (res->Data.Address.Info.Mem.Caching ==
240 ACPI_PREFETCHABLE_MEMORY)
241 flags |= RF_PREFETCHABLE;
242 } else {
243 /*
244 * XXX: Parse prefetch flag out of
245 * TypeSpecific.
246 */
247 }
248 break;
249 case ACPI_IO_RANGE:
250 type = SYS_RES_IOPORT;
251 break;
252 #ifdef PCI_RES_BUS
253 case ACPI_BUS_NUMBER_RANGE:
254 type = PCI_RES_BUS;
255 break;
256 #endif
257 default:
258 return (AE_OK);
259 }
260
261 if (min + length - 1 != max)
262 device_printf(sc->ap_dev,
263 "Length mismatch for %d range: %jx vs %jx\n", type,
264 (uintmax_t)(max - min + 1), (uintmax_t)length);
265 #ifdef __i386__
266 if (min > ULONG_MAX) {
267 device_printf(sc->ap_dev,
268 "Ignoring %d range above 4GB (%#jx-%#jx)\n",
269 type, (uintmax_t)min, (uintmax_t)max);
270 break;
271 }
272 if (max > ULONG_MAX) {
273 device_printf(sc->ap_dev,
274 "Truncating end of %d range above 4GB (%#jx-%#jx)\n",
275 type, (uintmax_t)min, (uintmax_t)max);
276 max = ULONG_MAX;
277 }
278 #endif
279 error = pcib_host_res_decodes(&sc->ap_host_res, type, min, max,
280 flags);
281 if (error)
282 panic("Failed to manage %d range (%#jx-%#jx): %d",
283 type, (uintmax_t)min, (uintmax_t)max, error);
284 break;
285 default:
286 break;
287 }
288 return (AE_OK);
289 }
290 #endif
291
292 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
293 static int
294 first_decoded_bus(struct acpi_hpcib_softc *sc, rman_res_t *startp)
295 {
296 struct resource_list_entry *rle;
297
298 rle = resource_list_find(&sc->ap_host_res.hr_rl, PCI_RES_BUS, 0);
299 if (rle == NULL)
300 return (ENXIO);
301 *startp = rle->start;
302 return (0);
303 }
304 #endif
305
306 static int
307 acpi_pcib_osc(struct acpi_hpcib_softc *sc, uint32_t osc_ctl)
308 {
309 ACPI_STATUS status;
310 uint32_t cap_set[3];
311
312 static uint8_t pci_host_bridge_uuid[ACPI_UUID_LENGTH] = {
313 0x5b, 0x4d, 0xdb, 0x33, 0xf7, 0x1f, 0x1c, 0x40,
314 0x96, 0x57, 0x74, 0x41, 0xc0, 0x3d, 0xd7, 0x66
315 };
316
317 /*
318 * Don't invoke _OSC if a control is already granted.
319 * However, always invoke _OSC during attach when 0 is passed.
320 */
321 if (osc_ctl != 0 && (sc->ap_osc_ctl & osc_ctl) == osc_ctl)
322 return (0);
323
324 /* Support Field: Extended PCI Config Space, PCI Segment Groups, MSI */
325 cap_set[PCI_OSC_SUPPORT] = PCIM_OSC_SUPPORT_EXT_PCI_CONF |
326 PCIM_OSC_SUPPORT_SEG_GROUP | PCIM_OSC_SUPPORT_MSI;
327 /* Active State Power Management, Clock Power Management Capability */
328 if (pci_enable_aspm)
329 cap_set[PCI_OSC_SUPPORT] |= PCIM_OSC_SUPPORT_ASPM |
330 PCIM_OSC_SUPPORT_CPMC;
331
332 /* Control Field */
333 cap_set[PCI_OSC_CTL] = sc->ap_osc_ctl | osc_ctl;
334
335 status = acpi_EvaluateOSC(sc->ap_handle, pci_host_bridge_uuid, 1,
336 nitems(cap_set), cap_set, cap_set, false);
337 if (ACPI_FAILURE(status)) {
338 if (status == AE_NOT_FOUND) {
339 sc->ap_osc_ctl |= osc_ctl;
340 return (0);
341 }
342 device_printf(sc->ap_dev, "_OSC failed: %s\n",
343 AcpiFormatException(status));
344 return (EIO);
345 }
346
347 /*
348 * _OSC may return an error in the status word, but will
349 * update the control mask always. _OSC should not revoke
350 * previously-granted controls.
351 */
352 if ((cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) != sc->ap_osc_ctl)
353 device_printf(sc->ap_dev, "_OSC revoked %#x\n",
354 (cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) ^ sc->ap_osc_ctl);
355 sc->ap_osc_ctl = cap_set[PCI_OSC_CTL];
356 if ((sc->ap_osc_ctl & osc_ctl) != osc_ctl)
357 return (EIO);
358
359 return (0);
360 }
361
362 static int
363 acpi_pcib_acpi_attach(device_t dev)
364 {
365 struct acpi_hpcib_softc *sc;
366 ACPI_STATUS status;
367 static int bus0_seen = 0;
368 u_int slot, func, busok;
369 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
370 struct resource *bus_res;
371 rman_res_t start;
372 int rid;
373 #endif
374 int error, domain;
375 uint8_t busno;
376
377 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
378
379 sc = device_get_softc(dev);
380 sc->ap_dev = dev;
381 sc->ap_handle = acpi_get_handle(dev);
382
383 /*
384 * Don't attach if we're not really there.
385 */
386 if (!acpi_DeviceIsPresent(dev))
387 return (ENXIO);
388
389 acpi_pcib_osc(sc, 0);
390
391 /*
392 * Get our segment number by evaluating _SEG.
393 * It's OK for this to not exist.
394 */
395 status = acpi_GetInteger(sc->ap_handle, "_SEG", &sc->ap_segment);
396 if (ACPI_FAILURE(status)) {
397 if (status != AE_NOT_FOUND) {
398 device_printf(dev, "could not evaluate _SEG - %s\n",
399 AcpiFormatException(status));
400 return_VALUE (ENXIO);
401 }
402 /* If it's not found, assume 0. */
403 sc->ap_segment = 0;
404 }
405
406 /*
407 * Get the address (device and function) of the associated
408 * PCI-Host bridge device from _ADR. Assume we don't have one if
409 * it doesn't exist.
410 */
411 status = acpi_GetInteger(sc->ap_handle, "_ADR", &sc->ap_addr);
412 if (ACPI_FAILURE(status)) {
413 device_printf(dev, "could not evaluate _ADR - %s\n",
414 AcpiFormatException(status));
415 sc->ap_addr = -1;
416 }
417
418 #ifdef NEW_PCIB
419 /*
420 * Determine which address ranges this bridge decodes and setup
421 * resource managers for those ranges.
422 */
423 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0)
424 panic("failed to init hostb resources");
425 if (!acpi_disabled("hostres")) {
426 status = AcpiWalkResources(sc->ap_handle, "_CRS",
427 acpi_pcib_producer_handler, sc);
428 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
429 device_printf(sc->ap_dev, "failed to parse resources: %s\n",
430 AcpiFormatException(status));
431 }
432 #endif
433
434 /*
435 * Get our base bus number by evaluating _BBN.
436 * If this doesn't work, we assume we're bus number 0.
437 *
438 * XXX note that it may also not exist in the case where we are
439 * meant to use a private configuration space mechanism for this bus,
440 * so we should dig out our resources and check to see if we have
441 * anything like that. How do we do this?
442 * XXX If we have the requisite information, and if we don't think the
443 * default PCI configuration space handlers can deal with this bus,
444 * we should attach our own handler.
445 * XXX invoke _REG on this for the PCI config space address space?
446 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set
447 * _BBN correctly. They set _BBN to zero for all bridges. Thus,
448 * if _BBN is zero and PCI bus 0 already exists, we try to read our
449 * bus number from the configuration registers at address _ADR.
450 * We only do this for domain/segment 0 in the hopes that this is
451 * only needed for old single-domain machines.
452 */
453 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus);
454 if (ACPI_FAILURE(status)) {
455 if (status != AE_NOT_FOUND) {
456 device_printf(dev, "could not evaluate _BBN - %s\n",
457 AcpiFormatException(status));
458 return (ENXIO);
459 } else {
460 /* If it's not found, assume 0. */
461 sc->ap_bus = 0;
462 }
463 }
464
465 /*
466 * If this is segment 0, the bus is zero, and PCI bus 0 already
467 * exists, read the bus number via PCI config space.
468 */
469 busok = 1;
470 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) {
471 busok = 0;
472 if (sc->ap_addr != -1) {
473 /* XXX: We assume bus 0. */
474 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr);
475 func = ACPI_ADR_PCI_FUNC(sc->ap_addr);
476 if (bootverbose)
477 device_printf(dev, "reading config registers from 0:%d:%d\n",
478 slot, func);
479 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0)
480 device_printf(dev, "couldn't read bus number from cfg space\n");
481 else {
482 sc->ap_bus = busno;
483 busok = 1;
484 }
485 }
486 }
487
488 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
489 /*
490 * If nothing else worked, hope that ACPI at least lays out the
491 * Host-PCI bridges in order and that as a result the next free
492 * bus number is our bus number.
493 */
494 if (busok == 0) {
495 /*
496 * If we have a region of bus numbers, use the first
497 * number for our bus.
498 */
499 if (first_decoded_bus(sc, &start) == 0)
500 sc->ap_bus = start;
501 else {
502 rid = 0;
503 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0,
504 PCI_BUSMAX, 1, 0);
505 if (bus_res == NULL) {
506 device_printf(dev,
507 "could not allocate bus number\n");
508 pcib_host_res_free(dev, &sc->ap_host_res);
509 return (ENXIO);
510 }
511 sc->ap_bus = rman_get_start(bus_res);
512 pci_domain_release_bus(sc->ap_segment, dev, rid, bus_res);
513 }
514 } else {
515 /*
516 * Require the bus number from _BBN to match the start of any
517 * decoded range.
518 */
519 if (first_decoded_bus(sc, &start) == 0 && sc->ap_bus != start) {
520 device_printf(dev,
521 "bus number %d does not match start of decoded range %ju\n",
522 sc->ap_bus, (uintmax_t)start);
523 pcib_host_res_free(dev, &sc->ap_host_res);
524 return (ENXIO);
525 }
526 }
527 #else
528 /*
529 * If nothing else worked, hope that ACPI at least lays out the
530 * host-PCI bridges in order and that as a result our unit number
531 * is actually our bus number. There are several reasons this
532 * might not be true.
533 */
534 if (busok == 0) {
535 sc->ap_bus = device_get_unit(dev);
536 device_printf(dev, "trying bus number %d\n", sc->ap_bus);
537 }
538 #endif
539
540 /* If this is bus 0 on segment 0, note that it has been seen already. */
541 if (sc->ap_segment == 0 && sc->ap_bus == 0)
542 bus0_seen = 1;
543
544 acpi_pcib_fetch_prt(dev, &sc->ap_prt);
545
546 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1,
547 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
548 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
549 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->ap_dma_tag);
550 if (error != 0)
551 goto errout;
552 error = bus_get_domain(dev, &domain);
553 if (error == 0)
554 error = bus_dma_tag_set_domain(sc->ap_dma_tag, domain);
555 /* Don't fail to attach if the domain can't be queried or set. */
556 error = 0;
557
558 bus_generic_probe(dev);
559 if (device_add_child(dev, "pci", -1) == NULL) {
560 bus_dma_tag_destroy(sc->ap_dma_tag);
561 sc->ap_dma_tag = NULL;
562 error = ENXIO;
563 goto errout;
564 }
565 return (bus_generic_attach(dev));
566
567 errout:
568 device_printf(device_get_parent(dev), "couldn't attach pci bus\n");
569 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
570 pcib_host_res_free(dev, &sc->ap_host_res);
571 #endif
572 return (error);
573 }
574
575 /*
576 * Support for standard PCI bridge ivars.
577 */
578 static int
579 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
580 {
581 struct acpi_hpcib_softc *sc = device_get_softc(dev);
582
583 switch (which) {
584 case PCIB_IVAR_DOMAIN:
585 *result = sc->ap_segment;
586 return (0);
587 case PCIB_IVAR_BUS:
588 *result = sc->ap_bus;
589 return (0);
590 case ACPI_IVAR_HANDLE:
591 *result = (uintptr_t)sc->ap_handle;
592 return (0);
593 case ACPI_IVAR_FLAGS:
594 *result = (uintptr_t)sc->ap_flags;
595 return (0);
596 }
597 return (ENOENT);
598 }
599
600 static int
601 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
602 {
603 struct acpi_hpcib_softc *sc = device_get_softc(dev);
604
605 switch (which) {
606 case PCIB_IVAR_DOMAIN:
607 return (EINVAL);
608 case PCIB_IVAR_BUS:
609 sc->ap_bus = value;
610 return (0);
611 case ACPI_IVAR_HANDLE:
612 sc->ap_handle = (ACPI_HANDLE)value;
613 return (0);
614 case ACPI_IVAR_FLAGS:
615 sc->ap_flags = (int)value;
616 return (0);
617 }
618 return (ENOENT);
619 }
620
621 static uint32_t
622 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
623 u_int reg, int bytes)
624 {
625 return (pci_cfgregread(bus, slot, func, reg, bytes));
626 }
627
628 static void
629 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
630 u_int reg, uint32_t data, int bytes)
631 {
632 pci_cfgregwrite(bus, slot, func, reg, data, bytes);
633 }
634
635 static int
636 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin)
637 {
638 struct acpi_hpcib_softc *sc = device_get_softc(pcib);
639
640 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
641 }
642
643 static int
644 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
645 int *irqs)
646 {
647 device_t bus;
648
649 bus = device_get_parent(pcib);
650 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
651 irqs));
652 }
653
654 static int
655 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq)
656 {
657 device_t bus;
658
659 bus = device_get_parent(pcib);
660 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
661 }
662
663 static int
664 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
665 uint32_t *data)
666 {
667 struct acpi_hpcib_softc *sc;
668 device_t bus, hostb;
669 int error;
670
671 bus = device_get_parent(pcib);
672 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data);
673 if (error)
674 return (error);
675
676 sc = device_get_softc(pcib);
677 if (sc->ap_addr == -1)
678 return (0);
679 /* XXX: Assumes all bridges are on bus 0. */
680 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr),
681 ACPI_ADR_PCI_FUNC(sc->ap_addr));
682 if (hostb != NULL)
683 pci_ht_map_msi(hostb, *addr);
684 return (0);
685 }
686
687 struct resource *
688 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid,
689 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
690 {
691 #ifdef NEW_PCIB
692 struct acpi_hpcib_softc *sc;
693 struct resource *res;
694 #endif
695
696 #if defined(__i386__) || defined(__amd64__)
697 start = hostb_alloc_start(type, start, end, count);
698 #endif
699
700 #ifdef NEW_PCIB
701 sc = device_get_softc(dev);
702 #ifdef PCI_RES_BUS
703 if (type == PCI_RES_BUS)
704 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end,
705 count, flags));
706 #endif
707 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end,
708 count, flags);
709
710 /*
711 * XXX: If this is a request for a specific range, assume it is
712 * correct and pass it up to the parent. What we probably want to
713 * do long-term is explicitly trust any firmware-configured
714 * resources during the initial bus scan on boot and then disable
715 * this after that.
716 */
717 if (res == NULL && start + count - 1 == end)
718 res = bus_generic_alloc_resource(dev, child, type, rid, start, end,
719 count, flags);
720 return (res);
721 #else
722 return (bus_generic_alloc_resource(dev, child, type, rid, start, end,
723 count, flags));
724 #endif
725 }
726
727 #ifdef NEW_PCIB
728 int
729 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child, int type,
730 struct resource *r, rman_res_t start, rman_res_t end)
731 {
732 struct acpi_hpcib_softc *sc;
733
734 sc = device_get_softc(dev);
735 #ifdef PCI_RES_BUS
736 if (type == PCI_RES_BUS)
737 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start,
738 end));
739 #endif
740 return (pcib_host_res_adjust(&sc->ap_host_res, child, type, r, start,
741 end));
742 }
743
744 #ifdef PCI_RES_BUS
745 int
746 acpi_pcib_acpi_release_resource(device_t dev, device_t child, int type, int rid,
747 struct resource *r)
748 {
749 struct acpi_hpcib_softc *sc;
750
751 sc = device_get_softc(dev);
752 if (type == PCI_RES_BUS)
753 return (pci_domain_release_bus(sc->ap_segment, child, rid, r));
754 return (bus_generic_release_resource(dev, child, type, rid, r));
755 }
756 #endif
757 #endif
758
759 static int
760 acpi_pcib_request_feature(device_t pcib, device_t dev, enum pci_feature feature)
761 {
762 uint32_t osc_ctl;
763 struct acpi_hpcib_softc *sc;
764
765 sc = device_get_softc(pcib);
766
767 switch (feature) {
768 case PCI_FEATURE_HP:
769 osc_ctl = PCIM_OSC_CTL_PCIE_HP;
770 break;
771 case PCI_FEATURE_AER:
772 osc_ctl = PCIM_OSC_CTL_PCIE_AER;
773 break;
774 default:
775 return (EINVAL);
776 }
777
778 return (acpi_pcib_osc(sc, osc_ctl));
779 }
780
781 static bus_dma_tag_t
782 acpi_pcib_get_dma_tag(device_t bus, device_t child)
783 {
784 struct acpi_hpcib_softc *sc;
785
786 sc = device_get_softc(bus);
787
788 return (sc->ap_dma_tag);
789 }
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