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 static devclass_t pcib_devclass;
160
161 DEFINE_CLASS_0(pcib, acpi_pcib_acpi_driver, acpi_pcib_acpi_methods,
162 sizeof(struct acpi_hpcib_softc));
163 DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, pcib_devclass, 0, 0);
164 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
165
166 static int
167 acpi_pcib_acpi_probe(device_t dev)
168 {
169 ACPI_DEVICE_INFO *devinfo;
170 ACPI_HANDLE h;
171 int root;
172
173 if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL ||
174 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
175 return (ENXIO);
176 root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0;
177 AcpiOsFree(devinfo);
178 if (!root || pci_cfgregopen() == 0)
179 return (ENXIO);
180
181 device_set_desc(dev, "ACPI Host-PCI bridge");
182 return (0);
183 }
184
185 #ifdef NEW_PCIB
186 static ACPI_STATUS
187 acpi_pcib_producer_handler(ACPI_RESOURCE *res, void *context)
188 {
189 struct acpi_hpcib_softc *sc;
190 UINT64 length, min, max;
191 u_int flags;
192 int error, type;
193
194 sc = context;
195 switch (res->Type) {
196 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
197 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
198 panic("host bridge has depenedent resources");
199 case ACPI_RESOURCE_TYPE_ADDRESS16:
200 case ACPI_RESOURCE_TYPE_ADDRESS32:
201 case ACPI_RESOURCE_TYPE_ADDRESS64:
202 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
203 if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER)
204 break;
205 switch (res->Type) {
206 case ACPI_RESOURCE_TYPE_ADDRESS16:
207 min = res->Data.Address16.Address.Minimum;
208 max = res->Data.Address16.Address.Maximum;
209 length = res->Data.Address16.Address.AddressLength;
210 break;
211 case ACPI_RESOURCE_TYPE_ADDRESS32:
212 min = res->Data.Address32.Address.Minimum;
213 max = res->Data.Address32.Address.Maximum;
214 length = res->Data.Address32.Address.AddressLength;
215 break;
216 case ACPI_RESOURCE_TYPE_ADDRESS64:
217 min = res->Data.Address64.Address.Minimum;
218 max = res->Data.Address64.Address.Maximum;
219 length = res->Data.Address64.Address.AddressLength;
220 break;
221 default:
222 KASSERT(res->Type ==
223 ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64,
224 ("should never happen"));
225 min = res->Data.ExtAddress64.Address.Minimum;
226 max = res->Data.ExtAddress64.Address.Maximum;
227 length = res->Data.ExtAddress64.Address.AddressLength;
228 break;
229 }
230 if (length == 0)
231 break;
232 if (min + length - 1 != max &&
233 (res->Data.Address.MinAddressFixed != ACPI_ADDRESS_FIXED ||
234 res->Data.Address.MaxAddressFixed != ACPI_ADDRESS_FIXED))
235 break;
236 flags = 0;
237 switch (res->Data.Address.ResourceType) {
238 case ACPI_MEMORY_RANGE:
239 type = SYS_RES_MEMORY;
240 if (res->Type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) {
241 if (res->Data.Address.Info.Mem.Caching ==
242 ACPI_PREFETCHABLE_MEMORY)
243 flags |= RF_PREFETCHABLE;
244 } else {
245 /*
246 * XXX: Parse prefetch flag out of
247 * TypeSpecific.
248 */
249 }
250 break;
251 case ACPI_IO_RANGE:
252 type = SYS_RES_IOPORT;
253 break;
254 #ifdef PCI_RES_BUS
255 case ACPI_BUS_NUMBER_RANGE:
256 type = PCI_RES_BUS;
257 break;
258 #endif
259 default:
260 return (AE_OK);
261 }
262
263 if (min + length - 1 != max)
264 device_printf(sc->ap_dev,
265 "Length mismatch for %d range: %jx vs %jx\n", type,
266 (uintmax_t)(max - min + 1), (uintmax_t)length);
267 #ifdef __i386__
268 if (min > ULONG_MAX) {
269 device_printf(sc->ap_dev,
270 "Ignoring %d range above 4GB (%#jx-%#jx)\n",
271 type, (uintmax_t)min, (uintmax_t)max);
272 break;
273 }
274 if (max > ULONG_MAX) {
275 device_printf(sc->ap_dev,
276 "Truncating end of %d range above 4GB (%#jx-%#jx)\n",
277 type, (uintmax_t)min, (uintmax_t)max);
278 max = ULONG_MAX;
279 }
280 #endif
281 error = pcib_host_res_decodes(&sc->ap_host_res, type, min, max,
282 flags);
283 if (error)
284 panic("Failed to manage %d range (%#jx-%#jx): %d",
285 type, (uintmax_t)min, (uintmax_t)max, error);
286 break;
287 default:
288 break;
289 }
290 return (AE_OK);
291 }
292 #endif
293
294 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
295 static int
296 first_decoded_bus(struct acpi_hpcib_softc *sc, rman_res_t *startp)
297 {
298 struct resource_list_entry *rle;
299
300 rle = resource_list_find(&sc->ap_host_res.hr_rl, PCI_RES_BUS, 0);
301 if (rle == NULL)
302 return (ENXIO);
303 *startp = rle->start;
304 return (0);
305 }
306 #endif
307
308 static int
309 acpi_pcib_osc(struct acpi_hpcib_softc *sc, uint32_t osc_ctl)
310 {
311 ACPI_STATUS status;
312 uint32_t cap_set[3];
313
314 static uint8_t pci_host_bridge_uuid[ACPI_UUID_LENGTH] = {
315 0x5b, 0x4d, 0xdb, 0x33, 0xf7, 0x1f, 0x1c, 0x40,
316 0x96, 0x57, 0x74, 0x41, 0xc0, 0x3d, 0xd7, 0x66
317 };
318
319 /*
320 * Don't invoke _OSC if a control is already granted.
321 * However, always invoke _OSC during attach when 0 is passed.
322 */
323 if (osc_ctl != 0 && (sc->ap_osc_ctl & osc_ctl) == osc_ctl)
324 return (0);
325
326 /* Support Field: Extended PCI Config Space, PCI Segment Groups, MSI */
327 cap_set[PCI_OSC_SUPPORT] = PCIM_OSC_SUPPORT_EXT_PCI_CONF |
328 PCIM_OSC_SUPPORT_SEG_GROUP | PCIM_OSC_SUPPORT_MSI;
329 /* Active State Power Management, Clock Power Management Capability */
330 if (pci_enable_aspm)
331 cap_set[PCI_OSC_SUPPORT] |= PCIM_OSC_SUPPORT_ASPM |
332 PCIM_OSC_SUPPORT_CPMC;
333
334 /* Control Field */
335 cap_set[PCI_OSC_CTL] = sc->ap_osc_ctl | osc_ctl;
336
337 status = acpi_EvaluateOSC(sc->ap_handle, pci_host_bridge_uuid, 1,
338 nitems(cap_set), cap_set, cap_set, false);
339 if (ACPI_FAILURE(status)) {
340 if (status == AE_NOT_FOUND) {
341 sc->ap_osc_ctl |= osc_ctl;
342 return (0);
343 }
344 device_printf(sc->ap_dev, "_OSC failed: %s\n",
345 AcpiFormatException(status));
346 return (EIO);
347 }
348
349 /*
350 * _OSC may return an error in the status word, but will
351 * update the control mask always. _OSC should not revoke
352 * previously-granted controls.
353 */
354 if ((cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) != sc->ap_osc_ctl)
355 device_printf(sc->ap_dev, "_OSC revoked %#x\n",
356 (cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) ^ sc->ap_osc_ctl);
357 sc->ap_osc_ctl = cap_set[PCI_OSC_CTL];
358 if ((sc->ap_osc_ctl & osc_ctl) != osc_ctl)
359 return (EIO);
360
361 return (0);
362 }
363
364 static int
365 acpi_pcib_acpi_attach(device_t dev)
366 {
367 struct acpi_hpcib_softc *sc;
368 ACPI_STATUS status;
369 static int bus0_seen = 0;
370 u_int slot, func, busok;
371 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
372 struct resource *bus_res;
373 rman_res_t start;
374 int rid;
375 #endif
376 int error, domain;
377 uint8_t busno;
378
379 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
380
381 sc = device_get_softc(dev);
382 sc->ap_dev = dev;
383 sc->ap_handle = acpi_get_handle(dev);
384
385 /*
386 * Don't attach if we're not really there.
387 */
388 if (!acpi_DeviceIsPresent(dev))
389 return (ENXIO);
390
391 acpi_pcib_osc(sc, 0);
392
393 /*
394 * Get our segment number by evaluating _SEG.
395 * It's OK for this to not exist.
396 */
397 status = acpi_GetInteger(sc->ap_handle, "_SEG", &sc->ap_segment);
398 if (ACPI_FAILURE(status)) {
399 if (status != AE_NOT_FOUND) {
400 device_printf(dev, "could not evaluate _SEG - %s\n",
401 AcpiFormatException(status));
402 return_VALUE (ENXIO);
403 }
404 /* If it's not found, assume 0. */
405 sc->ap_segment = 0;
406 }
407
408 /*
409 * Get the address (device and function) of the associated
410 * PCI-Host bridge device from _ADR. Assume we don't have one if
411 * it doesn't exist.
412 */
413 status = acpi_GetInteger(sc->ap_handle, "_ADR", &sc->ap_addr);
414 if (ACPI_FAILURE(status)) {
415 device_printf(dev, "could not evaluate _ADR - %s\n",
416 AcpiFormatException(status));
417 sc->ap_addr = -1;
418 }
419
420 #ifdef NEW_PCIB
421 /*
422 * Determine which address ranges this bridge decodes and setup
423 * resource managers for those ranges.
424 */
425 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0)
426 panic("failed to init hostb resources");
427 if (!acpi_disabled("hostres")) {
428 status = AcpiWalkResources(sc->ap_handle, "_CRS",
429 acpi_pcib_producer_handler, sc);
430 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
431 device_printf(sc->ap_dev, "failed to parse resources: %s\n",
432 AcpiFormatException(status));
433 }
434 #endif
435
436 /*
437 * Get our base bus number by evaluating _BBN.
438 * If this doesn't work, we assume we're bus number 0.
439 *
440 * XXX note that it may also not exist in the case where we are
441 * meant to use a private configuration space mechanism for this bus,
442 * so we should dig out our resources and check to see if we have
443 * anything like that. How do we do this?
444 * XXX If we have the requisite information, and if we don't think the
445 * default PCI configuration space handlers can deal with this bus,
446 * we should attach our own handler.
447 * XXX invoke _REG on this for the PCI config space address space?
448 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set
449 * _BBN correctly. They set _BBN to zero for all bridges. Thus,
450 * if _BBN is zero and PCI bus 0 already exists, we try to read our
451 * bus number from the configuration registers at address _ADR.
452 * We only do this for domain/segment 0 in the hopes that this is
453 * only needed for old single-domain machines.
454 */
455 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus);
456 if (ACPI_FAILURE(status)) {
457 if (status != AE_NOT_FOUND) {
458 device_printf(dev, "could not evaluate _BBN - %s\n",
459 AcpiFormatException(status));
460 return (ENXIO);
461 } else {
462 /* If it's not found, assume 0. */
463 sc->ap_bus = 0;
464 }
465 }
466
467 /*
468 * If this is segment 0, the bus is zero, and PCI bus 0 already
469 * exists, read the bus number via PCI config space.
470 */
471 busok = 1;
472 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) {
473 busok = 0;
474 if (sc->ap_addr != -1) {
475 /* XXX: We assume bus 0. */
476 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr);
477 func = ACPI_ADR_PCI_FUNC(sc->ap_addr);
478 if (bootverbose)
479 device_printf(dev, "reading config registers from 0:%d:%d\n",
480 slot, func);
481 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0)
482 device_printf(dev, "couldn't read bus number from cfg space\n");
483 else {
484 sc->ap_bus = busno;
485 busok = 1;
486 }
487 }
488 }
489
490 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
491 /*
492 * If nothing else worked, hope that ACPI at least lays out the
493 * Host-PCI bridges in order and that as a result the next free
494 * bus number is our bus number.
495 */
496 if (busok == 0) {
497 /*
498 * If we have a region of bus numbers, use the first
499 * number for our bus.
500 */
501 if (first_decoded_bus(sc, &start) == 0)
502 sc->ap_bus = start;
503 else {
504 rid = 0;
505 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0,
506 PCI_BUSMAX, 1, 0);
507 if (bus_res == NULL) {
508 device_printf(dev,
509 "could not allocate bus number\n");
510 pcib_host_res_free(dev, &sc->ap_host_res);
511 return (ENXIO);
512 }
513 sc->ap_bus = rman_get_start(bus_res);
514 pci_domain_release_bus(sc->ap_segment, dev, rid, bus_res);
515 }
516 } else {
517 /*
518 * Require the bus number from _BBN to match the start of any
519 * decoded range.
520 */
521 if (first_decoded_bus(sc, &start) == 0 && sc->ap_bus != start) {
522 device_printf(dev,
523 "bus number %d does not match start of decoded range %ju\n",
524 sc->ap_bus, (uintmax_t)start);
525 pcib_host_res_free(dev, &sc->ap_host_res);
526 return (ENXIO);
527 }
528 }
529 #else
530 /*
531 * If nothing else worked, hope that ACPI at least lays out the
532 * host-PCI bridges in order and that as a result our unit number
533 * is actually our bus number. There are several reasons this
534 * might not be true.
535 */
536 if (busok == 0) {
537 sc->ap_bus = device_get_unit(dev);
538 device_printf(dev, "trying bus number %d\n", sc->ap_bus);
539 }
540 #endif
541
542 /* If this is bus 0 on segment 0, note that it has been seen already. */
543 if (sc->ap_segment == 0 && sc->ap_bus == 0)
544 bus0_seen = 1;
545
546 acpi_pcib_fetch_prt(dev, &sc->ap_prt);
547
548 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1,
549 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
550 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
551 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->ap_dma_tag);
552 if (error != 0)
553 goto errout;
554 error = bus_get_domain(dev, &domain);
555 if (error == 0)
556 error = bus_dma_tag_set_domain(sc->ap_dma_tag, domain);
557 /* Don't fail to attach if the domain can't be queried or set. */
558 error = 0;
559
560 bus_generic_probe(dev);
561 if (device_add_child(dev, "pci", -1) == NULL) {
562 bus_dma_tag_destroy(sc->ap_dma_tag);
563 sc->ap_dma_tag = NULL;
564 error = ENXIO;
565 goto errout;
566 }
567 return (bus_generic_attach(dev));
568
569 errout:
570 device_printf(device_get_parent(dev), "couldn't attach pci bus\n");
571 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
572 pcib_host_res_free(dev, &sc->ap_host_res);
573 #endif
574 return (error);
575 }
576
577 /*
578 * Support for standard PCI bridge ivars.
579 */
580 static int
581 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
582 {
583 struct acpi_hpcib_softc *sc = device_get_softc(dev);
584
585 switch (which) {
586 case PCIB_IVAR_DOMAIN:
587 *result = sc->ap_segment;
588 return (0);
589 case PCIB_IVAR_BUS:
590 *result = sc->ap_bus;
591 return (0);
592 case ACPI_IVAR_HANDLE:
593 *result = (uintptr_t)sc->ap_handle;
594 return (0);
595 case ACPI_IVAR_FLAGS:
596 *result = (uintptr_t)sc->ap_flags;
597 return (0);
598 }
599 return (ENOENT);
600 }
601
602 static int
603 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
604 {
605 struct acpi_hpcib_softc *sc = device_get_softc(dev);
606
607 switch (which) {
608 case PCIB_IVAR_DOMAIN:
609 return (EINVAL);
610 case PCIB_IVAR_BUS:
611 sc->ap_bus = value;
612 return (0);
613 case ACPI_IVAR_HANDLE:
614 sc->ap_handle = (ACPI_HANDLE)value;
615 return (0);
616 case ACPI_IVAR_FLAGS:
617 sc->ap_flags = (int)value;
618 return (0);
619 }
620 return (ENOENT);
621 }
622
623 static uint32_t
624 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
625 u_int reg, int bytes)
626 {
627 return (pci_cfgregread(bus, slot, func, reg, bytes));
628 }
629
630 static void
631 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
632 u_int reg, uint32_t data, int bytes)
633 {
634 pci_cfgregwrite(bus, slot, func, reg, data, bytes);
635 }
636
637 static int
638 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin)
639 {
640 struct acpi_hpcib_softc *sc = device_get_softc(pcib);
641
642 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
643 }
644
645 static int
646 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
647 int *irqs)
648 {
649 device_t bus;
650
651 bus = device_get_parent(pcib);
652 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
653 irqs));
654 }
655
656 static int
657 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq)
658 {
659 device_t bus;
660
661 bus = device_get_parent(pcib);
662 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
663 }
664
665 static int
666 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
667 uint32_t *data)
668 {
669 struct acpi_hpcib_softc *sc;
670 device_t bus, hostb;
671 int error;
672
673 bus = device_get_parent(pcib);
674 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data);
675 if (error)
676 return (error);
677
678 sc = device_get_softc(pcib);
679 if (sc->ap_addr == -1)
680 return (0);
681 /* XXX: Assumes all bridges are on bus 0. */
682 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr),
683 ACPI_ADR_PCI_FUNC(sc->ap_addr));
684 if (hostb != NULL)
685 pci_ht_map_msi(hostb, *addr);
686 return (0);
687 }
688
689 struct resource *
690 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid,
691 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
692 {
693 #ifdef NEW_PCIB
694 struct acpi_hpcib_softc *sc;
695 struct resource *res;
696 #endif
697
698 #if defined(__i386__) || defined(__amd64__)
699 start = hostb_alloc_start(type, start, end, count);
700 #endif
701
702 #ifdef NEW_PCIB
703 sc = device_get_softc(dev);
704 #ifdef PCI_RES_BUS
705 if (type == PCI_RES_BUS)
706 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end,
707 count, flags));
708 #endif
709 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end,
710 count, flags);
711
712 /*
713 * XXX: If this is a request for a specific range, assume it is
714 * correct and pass it up to the parent. What we probably want to
715 * do long-term is explicitly trust any firmware-configured
716 * resources during the initial bus scan on boot and then disable
717 * this after that.
718 */
719 if (res == NULL && start + count - 1 == end)
720 res = bus_generic_alloc_resource(dev, child, type, rid, start, end,
721 count, flags);
722 return (res);
723 #else
724 return (bus_generic_alloc_resource(dev, child, type, rid, start, end,
725 count, flags));
726 #endif
727 }
728
729 #ifdef NEW_PCIB
730 int
731 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child, int type,
732 struct resource *r, rman_res_t start, rman_res_t end)
733 {
734 struct acpi_hpcib_softc *sc;
735
736 sc = device_get_softc(dev);
737 #ifdef PCI_RES_BUS
738 if (type == PCI_RES_BUS)
739 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start,
740 end));
741 #endif
742 return (pcib_host_res_adjust(&sc->ap_host_res, child, type, r, start,
743 end));
744 }
745
746 #ifdef PCI_RES_BUS
747 int
748 acpi_pcib_acpi_release_resource(device_t dev, device_t child, int type, int rid,
749 struct resource *r)
750 {
751 struct acpi_hpcib_softc *sc;
752
753 sc = device_get_softc(dev);
754 if (type == PCI_RES_BUS)
755 return (pci_domain_release_bus(sc->ap_segment, child, rid, r));
756 return (bus_generic_release_resource(dev, child, type, rid, r));
757 }
758 #endif
759 #endif
760
761 static int
762 acpi_pcib_request_feature(device_t pcib, device_t dev, enum pci_feature feature)
763 {
764 uint32_t osc_ctl;
765 struct acpi_hpcib_softc *sc;
766
767 sc = device_get_softc(pcib);
768
769 switch (feature) {
770 case PCI_FEATURE_HP:
771 osc_ctl = PCIM_OSC_CTL_PCIE_HP;
772 break;
773 case PCI_FEATURE_AER:
774 osc_ctl = PCIM_OSC_CTL_PCIE_AER;
775 break;
776 default:
777 return (EINVAL);
778 }
779
780 return (acpi_pcib_osc(sc, osc_ctl));
781 }
782
783 static bus_dma_tag_t
784 acpi_pcib_get_dma_tag(device_t bus, device_t child)
785 {
786 struct acpi_hpcib_softc *sc;
787
788 sc = device_get_softc(bus);
789
790 return (sc->ap_dma_tag);
791 }
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