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 #include "opt_acpi.h"
30 #include "opt_pci.h"
31
32 #include <sys/param.h>
33 #include <sys/bus.h>
34 #include <sys/kernel.h>
35 #include <sys/limits.h>
36 #include <sys/malloc.h>
37 #include <sys/module.h>
38 #include <sys/rman.h>
39 #include <sys/sysctl.h>
40
41 #include <contrib/dev/acpica/include/acpi.h>
42 #include <contrib/dev/acpica/include/accommon.h>
43
44 #include <dev/acpica/acpivar.h>
45
46 #include <machine/pci_cfgreg.h>
47 #include <dev/pci/pcireg.h>
48 #include <dev/pci/pcivar.h>
49 #include <dev/pci/pcib_private.h>
50 #include "pcib_if.h"
51
52 #include <dev/acpica/acpi_pcibvar.h>
53
54 /* Hooks for the ACPI CA debugging infrastructure. */
55 #define _COMPONENT ACPI_BUS
56 ACPI_MODULE_NAME("PCI_ACPI")
57
58 struct acpi_hpcib_softc {
59 device_t ap_dev;
60 ACPI_HANDLE ap_handle;
61 bus_dma_tag_t ap_dma_tag;
62 int ap_flags;
63 uint32_t ap_osc_ctl;
64
65 int ap_segment; /* PCI domain */
66 int ap_bus; /* bios-assigned bus number */
67 int ap_addr; /* device/func of PCI-Host bridge */
68
69 ACPI_BUFFER ap_prt; /* interrupt routing table */
70 #ifdef NEW_PCIB
71 struct pcib_host_resources ap_host_res;
72 #endif
73 };
74
75 static int acpi_pcib_acpi_probe(device_t bus);
76 static int acpi_pcib_acpi_attach(device_t bus);
77 static int acpi_pcib_read_ivar(device_t dev, device_t child,
78 int which, uintptr_t *result);
79 static int acpi_pcib_write_ivar(device_t dev, device_t child,
80 int which, uintptr_t value);
81 static uint32_t acpi_pcib_read_config(device_t dev, u_int bus,
82 u_int slot, u_int func, u_int reg, int bytes);
83 static void acpi_pcib_write_config(device_t dev, u_int bus,
84 u_int slot, u_int func, u_int reg, uint32_t data,
85 int bytes);
86 static int acpi_pcib_acpi_route_interrupt(device_t pcib,
87 device_t dev, int pin);
88 static int acpi_pcib_alloc_msi(device_t pcib, device_t dev,
89 int count, int maxcount, int *irqs);
90 static int acpi_pcib_map_msi(device_t pcib, device_t dev,
91 int irq, uint64_t *addr, uint32_t *data);
92 static int acpi_pcib_alloc_msix(device_t pcib, device_t dev,
93 int *irq);
94 static struct resource *acpi_pcib_acpi_alloc_resource(device_t dev,
95 device_t child, int type, int *rid,
96 rman_res_t start, rman_res_t end, rman_res_t count,
97 u_int flags);
98 #ifdef NEW_PCIB
99 static int acpi_pcib_acpi_adjust_resource(device_t dev,
100 device_t child, struct resource *r,
101 rman_res_t start, rman_res_t end);
102 #ifdef PCI_RES_BUS
103 static int acpi_pcib_acpi_release_resource(device_t dev,
104 device_t child, struct resource *r);
105 static int acpi_pcib_acpi_activate_resource(device_t dev,
106 device_t child, struct resource *r);
107 static int acpi_pcib_acpi_deactivate_resource(device_t dev,
108 device_t child, struct resource *r);
109 #endif
110 #endif
111 static int acpi_pcib_request_feature(device_t pcib, device_t dev,
112 enum pci_feature feature);
113 static bus_dma_tag_t acpi_pcib_get_dma_tag(device_t bus, device_t child);
114
115 static device_method_t acpi_pcib_acpi_methods[] = {
116 /* Device interface */
117 DEVMETHOD(device_probe, acpi_pcib_acpi_probe),
118 DEVMETHOD(device_attach, acpi_pcib_acpi_attach),
119 DEVMETHOD(device_shutdown, bus_generic_shutdown),
120 DEVMETHOD(device_suspend, bus_generic_suspend),
121 DEVMETHOD(device_resume, bus_generic_resume),
122
123 /* Bus interface */
124 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar),
125 DEVMETHOD(bus_write_ivar, acpi_pcib_write_ivar),
126 DEVMETHOD(bus_alloc_resource, acpi_pcib_acpi_alloc_resource),
127 #ifdef NEW_PCIB
128 DEVMETHOD(bus_adjust_resource, acpi_pcib_acpi_adjust_resource),
129 #else
130 DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
131 #endif
132 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
133 DEVMETHOD(bus_release_resource, acpi_pcib_acpi_release_resource),
134 DEVMETHOD(bus_activate_resource, acpi_pcib_acpi_activate_resource),
135 DEVMETHOD(bus_deactivate_resource, acpi_pcib_acpi_deactivate_resource),
136 #else
137 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
138 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
139 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
140 #endif
141 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
142 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
143 DEVMETHOD(bus_get_cpus, acpi_pcib_get_cpus),
144 DEVMETHOD(bus_get_dma_tag, acpi_pcib_get_dma_tag),
145
146 /* pcib interface */
147 DEVMETHOD(pcib_maxslots, pcib_maxslots),
148 DEVMETHOD(pcib_read_config, acpi_pcib_read_config),
149 DEVMETHOD(pcib_write_config, acpi_pcib_write_config),
150 DEVMETHOD(pcib_route_interrupt, acpi_pcib_acpi_route_interrupt),
151 DEVMETHOD(pcib_alloc_msi, acpi_pcib_alloc_msi),
152 DEVMETHOD(pcib_release_msi, pcib_release_msi),
153 DEVMETHOD(pcib_alloc_msix, acpi_pcib_alloc_msix),
154 DEVMETHOD(pcib_release_msix, pcib_release_msix),
155 DEVMETHOD(pcib_map_msi, acpi_pcib_map_msi),
156 DEVMETHOD(pcib_power_for_sleep, acpi_pcib_power_for_sleep),
157 DEVMETHOD(pcib_request_feature, acpi_pcib_request_feature),
158
159 DEVMETHOD_END
160 };
161
162 DEFINE_CLASS_0(pcib, acpi_pcib_acpi_driver, acpi_pcib_acpi_methods,
163 sizeof(struct acpi_hpcib_softc));
164 DRIVER_MODULE(acpi_pcib, acpi, acpi_pcib_acpi_driver, 0, 0);
165 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1);
166
167 static int
acpi_pcib_acpi_probe(device_t dev)168 acpi_pcib_acpi_probe(device_t dev)
169 {
170 ACPI_DEVICE_INFO *devinfo;
171 ACPI_HANDLE h;
172 int root;
173
174 if (acpi_disabled("pcib") || (h = acpi_get_handle(dev)) == NULL ||
175 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
176 return (ENXIO);
177 root = (devinfo->Flags & ACPI_PCI_ROOT_BRIDGE) != 0;
178 AcpiOsFree(devinfo);
179 if (!root || pci_cfgregopen() == 0)
180 return (ENXIO);
181
182 device_set_desc(dev, "ACPI Host-PCI bridge");
183 return (0);
184 }
185
186 #ifdef NEW_PCIB
187 static ACPI_STATUS
acpi_pcib_producer_handler(ACPI_RESOURCE * res,void * context)188 acpi_pcib_producer_handler(ACPI_RESOURCE *res, void *context)
189 {
190 struct acpi_hpcib_softc *sc;
191 UINT64 length, min, max;
192 u_int flags;
193 int error, type;
194
195 sc = context;
196 switch (res->Type) {
197 case ACPI_RESOURCE_TYPE_START_DEPENDENT:
198 case ACPI_RESOURCE_TYPE_END_DEPENDENT:
199 panic("host bridge has depenedent resources");
200 case ACPI_RESOURCE_TYPE_ADDRESS16:
201 case ACPI_RESOURCE_TYPE_ADDRESS32:
202 case ACPI_RESOURCE_TYPE_ADDRESS64:
203 case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
204 if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER)
205 break;
206 switch (res->Type) {
207 case ACPI_RESOURCE_TYPE_ADDRESS16:
208 min = res->Data.Address16.Address.Minimum;
209 max = res->Data.Address16.Address.Maximum;
210 length = res->Data.Address16.Address.AddressLength;
211 break;
212 case ACPI_RESOURCE_TYPE_ADDRESS32:
213 min = res->Data.Address32.Address.Minimum;
214 max = res->Data.Address32.Address.Maximum;
215 length = res->Data.Address32.Address.AddressLength;
216 break;
217 case ACPI_RESOURCE_TYPE_ADDRESS64:
218 min = res->Data.Address64.Address.Minimum;
219 max = res->Data.Address64.Address.Maximum;
220 length = res->Data.Address64.Address.AddressLength;
221 break;
222 default:
223 KASSERT(res->Type ==
224 ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64,
225 ("should never happen"));
226 min = res->Data.ExtAddress64.Address.Minimum;
227 max = res->Data.ExtAddress64.Address.Maximum;
228 length = res->Data.ExtAddress64.Address.AddressLength;
229 break;
230 }
231 if (length == 0)
232 break;
233 if (min + length - 1 != max &&
234 (res->Data.Address.MinAddressFixed != ACPI_ADDRESS_FIXED ||
235 res->Data.Address.MaxAddressFixed != ACPI_ADDRESS_FIXED))
236 break;
237 flags = 0;
238 switch (res->Data.Address.ResourceType) {
239 case ACPI_MEMORY_RANGE:
240 type = SYS_RES_MEMORY;
241 if (res->Type != ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64) {
242 if (res->Data.Address.Info.Mem.Caching ==
243 ACPI_PREFETCHABLE_MEMORY)
244 flags |= RF_PREFETCHABLE;
245 } else {
246 /*
247 * XXX: Parse prefetch flag out of
248 * TypeSpecific.
249 */
250 }
251 break;
252 case ACPI_IO_RANGE:
253 type = SYS_RES_IOPORT;
254 break;
255 #ifdef PCI_RES_BUS
256 case ACPI_BUS_NUMBER_RANGE:
257 type = PCI_RES_BUS;
258 break;
259 #endif
260 default:
261 return (AE_OK);
262 }
263
264 if (min + length - 1 != max)
265 device_printf(sc->ap_dev,
266 "Length mismatch for %d range: %jx vs %jx\n", type,
267 (uintmax_t)(max - min + 1), (uintmax_t)length);
268 #ifdef __i386__
269 if (min > ULONG_MAX) {
270 device_printf(sc->ap_dev,
271 "Ignoring %d range above 4GB (%#jx-%#jx)\n",
272 type, (uintmax_t)min, (uintmax_t)max);
273 break;
274 }
275 if (max > ULONG_MAX) {
276 device_printf(sc->ap_dev,
277 "Truncating end of %d range above 4GB (%#jx-%#jx)\n",
278 type, (uintmax_t)min, (uintmax_t)max);
279 max = ULONG_MAX;
280 }
281 #endif
282 error = pcib_host_res_decodes(&sc->ap_host_res, type, min, max,
283 flags);
284 if (error)
285 panic("Failed to manage %d range (%#jx-%#jx): %d",
286 type, (uintmax_t)min, (uintmax_t)max, error);
287 break;
288 default:
289 break;
290 }
291 return (AE_OK);
292 }
293 #endif
294
295 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
296 static bool
get_decoded_bus_range(struct acpi_hpcib_softc * sc,rman_res_t * startp,rman_res_t * endp)297 get_decoded_bus_range(struct acpi_hpcib_softc *sc, rman_res_t *startp,
298 rman_res_t *endp)
299 {
300 struct resource_list_entry *rle;
301
302 rle = resource_list_find(&sc->ap_host_res.hr_rl, PCI_RES_BUS, 0);
303 if (rle == NULL)
304 return (false);
305 *startp = rle->start;
306 *endp = rle->end;
307 return (true);
308 }
309 #endif
310
311 static int
acpi_pcib_osc(struct acpi_hpcib_softc * sc,uint32_t osc_ctl)312 acpi_pcib_osc(struct acpi_hpcib_softc *sc, uint32_t osc_ctl)
313 {
314 ACPI_STATUS status;
315 uint32_t cap_set[3];
316
317 static uint8_t pci_host_bridge_uuid[ACPI_UUID_LENGTH] = {
318 0x5b, 0x4d, 0xdb, 0x33, 0xf7, 0x1f, 0x1c, 0x40,
319 0x96, 0x57, 0x74, 0x41, 0xc0, 0x3d, 0xd7, 0x66
320 };
321
322 /*
323 * Don't invoke _OSC if a control is already granted.
324 * However, always invoke _OSC during attach when 0 is passed.
325 */
326 if (osc_ctl != 0 && (sc->ap_osc_ctl & osc_ctl) == osc_ctl)
327 return (0);
328
329 /* Support Field: Extended PCI Config Space, PCI Segment Groups, MSI */
330 cap_set[PCI_OSC_SUPPORT] = PCIM_OSC_SUPPORT_EXT_PCI_CONF |
331 PCIM_OSC_SUPPORT_SEG_GROUP | PCIM_OSC_SUPPORT_MSI;
332 /* Active State Power Management, Clock Power Management Capability */
333 if (pci_enable_aspm)
334 cap_set[PCI_OSC_SUPPORT] |= PCIM_OSC_SUPPORT_ASPM |
335 PCIM_OSC_SUPPORT_CPMC;
336
337 /* Control Field */
338 cap_set[PCI_OSC_CTL] = sc->ap_osc_ctl | osc_ctl;
339
340 status = acpi_EvaluateOSC(sc->ap_handle, pci_host_bridge_uuid, 1,
341 nitems(cap_set), cap_set, cap_set, false);
342 if (ACPI_FAILURE(status)) {
343 if (status == AE_NOT_FOUND) {
344 sc->ap_osc_ctl |= osc_ctl;
345 return (0);
346 }
347 device_printf(sc->ap_dev, "_OSC failed: %s\n",
348 AcpiFormatException(status));
349 return (EIO);
350 }
351
352 /*
353 * _OSC may return an error in the status word, but will
354 * update the control mask always. _OSC should not revoke
355 * previously-granted controls.
356 */
357 if ((cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) != sc->ap_osc_ctl)
358 device_printf(sc->ap_dev, "_OSC revoked %#x\n",
359 (cap_set[PCI_OSC_CTL] & sc->ap_osc_ctl) ^ sc->ap_osc_ctl);
360 sc->ap_osc_ctl = cap_set[PCI_OSC_CTL];
361 if ((sc->ap_osc_ctl & osc_ctl) != osc_ctl)
362 return (EIO);
363
364 return (0);
365 }
366
367 static int
acpi_pcib_acpi_attach(device_t dev)368 acpi_pcib_acpi_attach(device_t dev)
369 {
370 struct acpi_hpcib_softc *sc;
371 ACPI_STATUS status;
372 static int bus0_seen = 0;
373 u_int slot, func, busok;
374 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
375 struct resource *bus_res;
376 rman_res_t end, start;
377 int rid;
378 #endif
379 int error, domain;
380 uint8_t busno;
381
382 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
383
384 sc = device_get_softc(dev);
385 sc->ap_dev = dev;
386 sc->ap_handle = acpi_get_handle(dev);
387
388 /*
389 * Don't attach if we're not really there.
390 */
391 if (!acpi_DeviceIsPresent(dev))
392 return (ENXIO);
393
394 acpi_pcib_osc(sc, 0);
395
396 /*
397 * Get our segment number by evaluating _SEG.
398 * It's OK for this to not exist.
399 */
400 status = acpi_GetInteger(sc->ap_handle, "_SEG", &sc->ap_segment);
401 if (ACPI_FAILURE(status)) {
402 if (status != AE_NOT_FOUND) {
403 device_printf(dev, "could not evaluate _SEG - %s\n",
404 AcpiFormatException(status));
405 return_VALUE (ENXIO);
406 }
407 /* If it's not found, assume 0. */
408 sc->ap_segment = 0;
409 }
410
411 /*
412 * Get the address (device and function) of the associated
413 * PCI-Host bridge device from _ADR. Assume we don't have one if
414 * it doesn't exist.
415 */
416 status = acpi_GetInteger(sc->ap_handle, "_ADR", &sc->ap_addr);
417 if (ACPI_FAILURE(status)) {
418 if (status != AE_NOT_FOUND)
419 device_printf(dev, "could not evaluate _ADR - %s\n",
420 AcpiFormatException(status));
421 sc->ap_addr = -1;
422 }
423
424 #ifdef NEW_PCIB
425 /*
426 * Determine which address ranges this bridge decodes and setup
427 * resource managers for those ranges.
428 */
429 if (pcib_host_res_init(sc->ap_dev, &sc->ap_host_res) != 0)
430 panic("failed to init hostb resources");
431 if (!acpi_disabled("hostres")) {
432 status = AcpiWalkResources(sc->ap_handle, "_CRS",
433 acpi_pcib_producer_handler, sc);
434 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
435 device_printf(sc->ap_dev, "failed to parse resources: %s\n",
436 AcpiFormatException(status));
437 }
438 #endif
439
440 /*
441 * Get our base bus number by evaluating _BBN.
442 * If this doesn't work, we assume we're bus number 0.
443 *
444 * XXX note that it may also not exist in the case where we are
445 * meant to use a private configuration space mechanism for this bus,
446 * so we should dig out our resources and check to see if we have
447 * anything like that. How do we do this?
448 * XXX If we have the requisite information, and if we don't think the
449 * default PCI configuration space handlers can deal with this bus,
450 * we should attach our own handler.
451 * XXX invoke _REG on this for the PCI config space address space?
452 * XXX It seems many BIOS's with multiple Host-PCI bridges do not set
453 * _BBN correctly. They set _BBN to zero for all bridges. Thus,
454 * if _BBN is zero and PCI bus 0 already exists, we try to read our
455 * bus number from the configuration registers at address _ADR.
456 * We only do this for domain/segment 0 in the hopes that this is
457 * only needed for old single-domain machines.
458 */
459 status = acpi_GetInteger(sc->ap_handle, "_BBN", &sc->ap_bus);
460 if (ACPI_FAILURE(status)) {
461 if (status != AE_NOT_FOUND) {
462 device_printf(dev, "could not evaluate _BBN - %s\n",
463 AcpiFormatException(status));
464 return (ENXIO);
465 } else {
466 /* If it's not found, assume 0. */
467 sc->ap_bus = 0;
468 }
469 }
470
471 /*
472 * If this is segment 0, the bus is zero, and PCI bus 0 already
473 * exists, read the bus number via PCI config space.
474 */
475 busok = 1;
476 if (sc->ap_segment == 0 && sc->ap_bus == 0 && bus0_seen) {
477 busok = 0;
478 if (sc->ap_addr != -1) {
479 /* XXX: We assume bus 0. */
480 slot = ACPI_ADR_PCI_SLOT(sc->ap_addr);
481 func = ACPI_ADR_PCI_FUNC(sc->ap_addr);
482 if (bootverbose)
483 device_printf(dev, "reading config registers from 0:%d:%d\n",
484 slot, func);
485 if (host_pcib_get_busno(pci_cfgregread, 0, slot, func, &busno) == 0)
486 device_printf(dev, "couldn't read bus number from cfg space\n");
487 else {
488 sc->ap_bus = busno;
489 busok = 1;
490 }
491 }
492 }
493
494 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
495 /*
496 * If nothing else worked, hope that ACPI at least lays out the
497 * Host-PCI bridges in order and that as a result the next free
498 * bus number is our bus number.
499 */
500 if (busok == 0) {
501 /*
502 * If we have a region of bus numbers, use the first
503 * number for our bus.
504 */
505 if (get_decoded_bus_range(sc, &start, &end))
506 sc->ap_bus = start;
507 else {
508 rid = 0;
509 bus_res = pci_domain_alloc_bus(sc->ap_segment, dev, &rid, 0,
510 PCI_BUSMAX, 1, 0);
511 if (bus_res == NULL) {
512 device_printf(dev,
513 "could not allocate bus number\n");
514 pcib_host_res_free(dev, &sc->ap_host_res);
515 return (ENXIO);
516 }
517 sc->ap_bus = rman_get_start(bus_res);
518 pci_domain_release_bus(sc->ap_segment, dev, bus_res);
519 }
520 } else {
521 /*
522 * If there is a decoded bus range, assume the bus number is
523 * the first value in the range. Warn if _BBN doesn't match.
524 */
525 if (get_decoded_bus_range(sc, &start, &end)) {
526 if (sc->ap_bus != start) {
527 device_printf(dev,
528 "WARNING: BIOS configured bus number (%d) is "
529 "not within decoded bus number range "
530 "(%ju - %ju).\n",
531 sc->ap_bus, (uintmax_t)start, (uintmax_t)end);
532 device_printf(dev,
533 "Using range start (%ju) as bus number.\n",
534 (uintmax_t)start);
535 sc->ap_bus = start;
536 }
537 }
538 }
539 #else
540 /*
541 * If nothing else worked, hope that ACPI at least lays out the
542 * host-PCI bridges in order and that as a result our unit number
543 * is actually our bus number. There are several reasons this
544 * might not be true.
545 */
546 if (busok == 0) {
547 sc->ap_bus = device_get_unit(dev);
548 device_printf(dev, "trying bus number %d\n", sc->ap_bus);
549 }
550 #endif
551
552 /* If this is bus 0 on segment 0, note that it has been seen already. */
553 if (sc->ap_segment == 0 && sc->ap_bus == 0)
554 bus0_seen = 1;
555
556 acpi_pcib_fetch_prt(dev, &sc->ap_prt);
557
558 error = bus_dma_tag_create(bus_get_dma_tag(dev), 1,
559 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
560 NULL, NULL, BUS_SPACE_MAXSIZE, BUS_SPACE_UNRESTRICTED,
561 BUS_SPACE_MAXSIZE, 0, NULL, NULL, &sc->ap_dma_tag);
562 if (error != 0)
563 goto errout;
564 error = bus_get_domain(dev, &domain);
565 if (error == 0)
566 error = bus_dma_tag_set_domain(sc->ap_dma_tag, domain);
567 /* Don't fail to attach if the domain can't be queried or set. */
568 error = 0;
569
570 bus_generic_probe(dev);
571 if (device_add_child(dev, "pci", -1) == NULL) {
572 bus_dma_tag_destroy(sc->ap_dma_tag);
573 sc->ap_dma_tag = NULL;
574 error = ENXIO;
575 goto errout;
576 }
577 return (bus_generic_attach(dev));
578
579 errout:
580 device_printf(device_get_parent(dev), "couldn't attach pci bus\n");
581 #if defined(NEW_PCIB) && defined(PCI_RES_BUS)
582 pcib_host_res_free(dev, &sc->ap_host_res);
583 #endif
584 return (error);
585 }
586
587 /*
588 * Support for standard PCI bridge ivars.
589 */
590 static int
acpi_pcib_read_ivar(device_t dev,device_t child,int which,uintptr_t * result)591 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
592 {
593 struct acpi_hpcib_softc *sc = device_get_softc(dev);
594
595 switch (which) {
596 case PCIB_IVAR_DOMAIN:
597 *result = sc->ap_segment;
598 return (0);
599 case PCIB_IVAR_BUS:
600 *result = sc->ap_bus;
601 return (0);
602 case ACPI_IVAR_HANDLE:
603 *result = (uintptr_t)sc->ap_handle;
604 return (0);
605 case ACPI_IVAR_FLAGS:
606 *result = (uintptr_t)sc->ap_flags;
607 return (0);
608 }
609 return (ENOENT);
610 }
611
612 static int
acpi_pcib_write_ivar(device_t dev,device_t child,int which,uintptr_t value)613 acpi_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
614 {
615 struct acpi_hpcib_softc *sc = device_get_softc(dev);
616
617 switch (which) {
618 case PCIB_IVAR_DOMAIN:
619 return (EINVAL);
620 case PCIB_IVAR_BUS:
621 sc->ap_bus = value;
622 return (0);
623 case ACPI_IVAR_HANDLE:
624 sc->ap_handle = (ACPI_HANDLE)value;
625 return (0);
626 case ACPI_IVAR_FLAGS:
627 sc->ap_flags = (int)value;
628 return (0);
629 }
630 return (ENOENT);
631 }
632
633 static uint32_t
acpi_pcib_read_config(device_t dev,u_int bus,u_int slot,u_int func,u_int reg,int bytes)634 acpi_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func,
635 u_int reg, int bytes)
636 {
637 struct acpi_hpcib_softc *sc = device_get_softc(dev);
638
639 return (pci_cfgregread(sc->ap_segment, bus, slot, func, reg, bytes));
640 }
641
642 static void
acpi_pcib_write_config(device_t dev,u_int bus,u_int slot,u_int func,u_int reg,uint32_t data,int bytes)643 acpi_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func,
644 u_int reg, uint32_t data, int bytes)
645 {
646 struct acpi_hpcib_softc *sc = device_get_softc(dev);
647
648 pci_cfgregwrite(sc->ap_segment, bus, slot, func, reg, data, bytes);
649 }
650
651 static int
acpi_pcib_acpi_route_interrupt(device_t pcib,device_t dev,int pin)652 acpi_pcib_acpi_route_interrupt(device_t pcib, device_t dev, int pin)
653 {
654 struct acpi_hpcib_softc *sc = device_get_softc(pcib);
655
656 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt));
657 }
658
659 static int
acpi_pcib_alloc_msi(device_t pcib,device_t dev,int count,int maxcount,int * irqs)660 acpi_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount,
661 int *irqs)
662 {
663 device_t bus;
664
665 bus = device_get_parent(pcib);
666 return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount,
667 irqs));
668 }
669
670 static int
acpi_pcib_alloc_msix(device_t pcib,device_t dev,int * irq)671 acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq)
672 {
673 device_t bus;
674
675 bus = device_get_parent(pcib);
676 return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
677 }
678
679 static int
acpi_pcib_map_msi(device_t pcib,device_t dev,int irq,uint64_t * addr,uint32_t * data)680 acpi_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr,
681 uint32_t *data)
682 {
683 struct acpi_hpcib_softc *sc;
684 device_t bus, hostb;
685 int error;
686
687 bus = device_get_parent(pcib);
688 error = PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data);
689 if (error)
690 return (error);
691
692 sc = device_get_softc(pcib);
693 if (sc->ap_addr == -1)
694 return (0);
695 /* XXX: Assumes all bridges are on bus 0. */
696 hostb = pci_find_dbsf(sc->ap_segment, 0, ACPI_ADR_PCI_SLOT(sc->ap_addr),
697 ACPI_ADR_PCI_FUNC(sc->ap_addr));
698 if (hostb != NULL)
699 pci_ht_map_msi(hostb, *addr);
700 return (0);
701 }
702
703 struct resource *
acpi_pcib_acpi_alloc_resource(device_t dev,device_t child,int type,int * rid,rman_res_t start,rman_res_t end,rman_res_t count,u_int flags)704 acpi_pcib_acpi_alloc_resource(device_t dev, device_t child, int type, int *rid,
705 rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
706 {
707 #ifdef NEW_PCIB
708 struct acpi_hpcib_softc *sc;
709 struct resource *res;
710 #endif
711
712 #if defined(__i386__) || defined(__amd64__)
713 start = hostb_alloc_start(type, start, end, count);
714 #endif
715
716 #ifdef NEW_PCIB
717 sc = device_get_softc(dev);
718 #ifdef PCI_RES_BUS
719 if (type == PCI_RES_BUS)
720 return (pci_domain_alloc_bus(sc->ap_segment, child, rid, start, end,
721 count, flags));
722 #endif
723 res = pcib_host_res_alloc(&sc->ap_host_res, child, type, rid, start, end,
724 count, flags);
725
726 /*
727 * XXX: If this is a request for a specific range, assume it is
728 * correct and pass it up to the parent. What we probably want to
729 * do long-term is explicitly trust any firmware-configured
730 * resources during the initial bus scan on boot and then disable
731 * this after that.
732 */
733 if (res == NULL && start + count - 1 == end)
734 res = bus_generic_alloc_resource(dev, child, type, rid, start, end,
735 count, flags);
736 return (res);
737 #else
738 return (bus_generic_alloc_resource(dev, child, type, rid, start, end,
739 count, flags));
740 #endif
741 }
742
743 #ifdef NEW_PCIB
744 int
acpi_pcib_acpi_adjust_resource(device_t dev,device_t child,struct resource * r,rman_res_t start,rman_res_t end)745 acpi_pcib_acpi_adjust_resource(device_t dev, device_t child,
746 struct resource *r, rman_res_t start, rman_res_t end)
747 {
748 struct acpi_hpcib_softc *sc;
749
750 sc = device_get_softc(dev);
751 #ifdef PCI_RES_BUS
752 if (rman_get_type(r) == PCI_RES_BUS)
753 return (pci_domain_adjust_bus(sc->ap_segment, child, r, start,
754 end));
755 #endif
756 return (pcib_host_res_adjust(&sc->ap_host_res, child, r, start, end));
757 }
758
759 #ifdef PCI_RES_BUS
760 int
acpi_pcib_acpi_release_resource(device_t dev,device_t child,struct resource * r)761 acpi_pcib_acpi_release_resource(device_t dev, device_t child,
762 struct resource *r)
763 {
764 struct acpi_hpcib_softc *sc;
765
766 sc = device_get_softc(dev);
767 if (rman_get_type(r) == PCI_RES_BUS)
768 return (pci_domain_release_bus(sc->ap_segment, child, r));
769 return (bus_generic_release_resource(dev, child, r));
770 }
771
772 int
acpi_pcib_acpi_activate_resource(device_t dev,device_t child,struct resource * r)773 acpi_pcib_acpi_activate_resource(device_t dev, device_t child,
774 struct resource *r)
775 {
776 struct acpi_hpcib_softc *sc;
777
778 sc = device_get_softc(dev);
779 if (rman_get_type(r) == PCI_RES_BUS)
780 return (pci_domain_activate_bus(sc->ap_segment, child, r));
781 return (bus_generic_activate_resource(dev, child, r));
782 }
783
784 int
acpi_pcib_acpi_deactivate_resource(device_t dev,device_t child,struct resource * r)785 acpi_pcib_acpi_deactivate_resource(device_t dev, device_t child,
786 struct resource *r)
787 {
788 struct acpi_hpcib_softc *sc;
789
790 sc = device_get_softc(dev);
791 if (rman_get_type(r) == PCI_RES_BUS)
792 return (pci_domain_deactivate_bus(sc->ap_segment, child, r));
793 return (bus_generic_deactivate_resource(dev, child, r));
794 }
795 #endif
796 #endif
797
798 static int
acpi_pcib_request_feature(device_t pcib,device_t dev,enum pci_feature feature)799 acpi_pcib_request_feature(device_t pcib, device_t dev, enum pci_feature feature)
800 {
801 uint32_t osc_ctl;
802 struct acpi_hpcib_softc *sc;
803
804 sc = device_get_softc(pcib);
805
806 switch (feature) {
807 case PCI_FEATURE_HP:
808 osc_ctl = PCIM_OSC_CTL_PCIE_HP;
809 break;
810 case PCI_FEATURE_AER:
811 osc_ctl = PCIM_OSC_CTL_PCIE_AER;
812 break;
813 default:
814 return (EINVAL);
815 }
816
817 return (acpi_pcib_osc(sc, osc_ctl));
818 }
819
820 static bus_dma_tag_t
acpi_pcib_get_dma_tag(device_t bus,device_t child)821 acpi_pcib_get_dma_tag(device_t bus, device_t child)
822 {
823 struct acpi_hpcib_softc *sc;
824
825 sc = device_get_softc(bus);
826
827 return (sc->ap_dma_tag);
828 }
829