1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2006, Cisco Systems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of Cisco Systems, Inc. nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #include <sys/param.h>
37 #include <sys/module.h>
38 #include <sys/systm.h>
39 #include <sys/mbuf.h>
40 #include <sys/malloc.h>
41 #include <sys/kernel.h>
42 #include <sys/socket.h>
43 #include <sys/queue.h>
44
45 #include <machine/vmparam.h>
46 #include <vm/vm.h>
47 #include <vm/pmap.h>
48
49 #include <machine/bus.h>
50 #include <machine/resource.h>
51 #include <machine/frame.h>
52
53 #include <sys/bus.h>
54 #include <sys/rman.h>
55
56 #include <machine/intr_machdep.h>
57
58 #include <machine/xen-os.h>
59 #include <machine/hypervisor.h>
60 #include <machine/hypervisor-ifs.h>
61 #include <machine/xen_intr.h>
62 #include <machine/evtchn.h>
63 #include <machine/xenbus.h>
64 #include <machine/gnttab.h>
65 #include <machine/xen-public/memory.h>
66 #include <machine/xen-public/io/pciif.h>
67
68 #include <sys/pciio.h>
69 #include <dev/pci/pcivar.h>
70 #include "pcib_if.h"
71
72 #ifdef XEN_PCIDEV_FE_DEBUG
73 #define DPRINTF(fmt, args...) \
74 printf("pcifront (%s:%d): " fmt, __FUNCTION__, __LINE__, ##args)
75 #else
76 #define DPRINTF(fmt, args...) ((void)0)
77 #endif
78 #define WPRINTF(fmt, args...) \
79 printf("pcifront (%s:%d): " fmt, __FUNCTION__, __LINE__, ##args)
80
81 #define INVALID_GRANT_REF (0)
82 #define INVALID_EVTCHN (-1)
83 #define virt_to_mfn(x) (vtophys(x) >> PAGE_SHIFT)
84
85 struct pcifront_device {
86 STAILQ_ENTRY(pcifront_device) next;
87
88 struct xenbus_device *xdev;
89
90 int unit;
91 int evtchn;
92 int gnt_ref;
93
94 /* Lock this when doing any operations in sh_info */
95 struct mtx sh_info_lock;
96 struct xen_pci_sharedinfo *sh_info;
97
98 device_t ndev;
99
100 int ref_cnt;
101 };
102
103 static STAILQ_HEAD(pcifront_dlist, pcifront_device) pdev_list = STAILQ_HEAD_INITIALIZER(pdev_list);
104
105 struct xpcib_softc {
106 int domain;
107 int bus;
108 struct pcifront_device *pdev;
109 };
110
111 /* Allocate a PCI device structure */
112 static struct pcifront_device *
alloc_pdev(struct xenbus_device * xdev)113 alloc_pdev(struct xenbus_device *xdev)
114 {
115 struct pcifront_device *pdev = NULL;
116 int err, unit;
117
118 err = sscanf(xdev->nodename, "device/pci/%d", &unit);
119 if (err != 1) {
120 if (err == 0)
121 err = -EINVAL;
122 xenbus_dev_fatal(pdev->xdev, err, "Error scanning pci device instance number");
123 goto out;
124 }
125
126 pdev = (struct pcifront_device *)malloc(sizeof(struct pcifront_device), M_DEVBUF, M_NOWAIT);
127 if (pdev == NULL) {
128 err = -ENOMEM;
129 xenbus_dev_fatal(xdev, err, "Error allocating pcifront_device struct");
130 goto out;
131 }
132 pdev->unit = unit;
133 pdev->xdev = xdev;
134 pdev->ref_cnt = 1;
135
136 pdev->sh_info = (struct xen_pci_sharedinfo *)malloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT);
137 if (pdev->sh_info == NULL) {
138 free(pdev, M_DEVBUF);
139 pdev = NULL;
140 err = -ENOMEM;
141 xenbus_dev_fatal(xdev, err, "Error allocating sh_info struct");
142 goto out;
143 }
144 pdev->sh_info->flags = 0;
145
146 xdev->data = pdev;
147
148 mtx_init(&pdev->sh_info_lock, "info_lock", "pci shared dev info lock", MTX_DEF);
149
150 pdev->evtchn = INVALID_EVTCHN;
151 pdev->gnt_ref = INVALID_GRANT_REF;
152
153 STAILQ_INSERT_TAIL(&pdev_list, pdev, next);
154
155 DPRINTF("Allocated pdev @ 0x%p (unit=%d)\n", pdev, unit);
156
157 out:
158 return pdev;
159 }
160
161 /* Hold a reference to a pcifront device */
162 static void
get_pdev(struct pcifront_device * pdev)163 get_pdev(struct pcifront_device *pdev)
164 {
165 pdev->ref_cnt++;
166 }
167
168 /* Release a reference to a pcifront device */
169 static void
put_pdev(struct pcifront_device * pdev)170 put_pdev(struct pcifront_device *pdev)
171 {
172 if (--pdev->ref_cnt > 0)
173 return;
174
175 DPRINTF("freeing pdev @ 0x%p (ref_cnt=%d)\n", pdev, pdev->ref_cnt);
176
177 if (pdev->evtchn != INVALID_EVTCHN)
178 xenbus_free_evtchn(pdev->xdev, pdev->evtchn);
179
180 if (pdev->gnt_ref != INVALID_GRANT_REF)
181 gnttab_end_foreign_access(pdev->gnt_ref, 0, (void *)pdev->sh_info);
182
183 pdev->xdev->data = NULL;
184
185 free(pdev, M_DEVBUF);
186 }
187
188
189 /* Write to the xenbus info needed by backend */
190 static int
pcifront_publish_info(struct pcifront_device * pdev)191 pcifront_publish_info(struct pcifront_device *pdev)
192 {
193 int err = 0;
194 struct xenbus_transaction *trans;
195
196 err = xenbus_grant_ring(pdev->xdev, virt_to_mfn(pdev->sh_info));
197 if (err < 0) {
198 WPRINTF("error granting access to ring page\n");
199 goto out;
200 }
201
202 pdev->gnt_ref = err;
203
204 err = xenbus_alloc_evtchn(pdev->xdev, &pdev->evtchn);
205 if (err)
206 goto out;
207
208 do_publish:
209 trans = xenbus_transaction_start();
210 if (IS_ERR(trans)) {
211 xenbus_dev_fatal(pdev->xdev, err,
212 "Error writing configuration for backend "
213 "(start transaction)");
214 goto out;
215 }
216
217 err = xenbus_printf(trans, pdev->xdev->nodename,
218 "pci-op-ref", "%u", pdev->gnt_ref);
219 if (!err)
220 err = xenbus_printf(trans, pdev->xdev->nodename,
221 "event-channel", "%u", pdev->evtchn);
222 if (!err)
223 err = xenbus_printf(trans, pdev->xdev->nodename,
224 "magic", XEN_PCI_MAGIC);
225 if (!err)
226 err = xenbus_switch_state(pdev->xdev, trans,
227 XenbusStateInitialised);
228
229 if (err) {
230 xenbus_transaction_end(trans, 1);
231 xenbus_dev_fatal(pdev->xdev, err,
232 "Error writing configuration for backend");
233 goto out;
234 } else {
235 err = xenbus_transaction_end(trans, 0);
236 if (err == -EAGAIN)
237 goto do_publish;
238 else if (err) {
239 xenbus_dev_fatal(pdev->xdev, err,
240 "Error completing transaction for backend");
241 goto out;
242 }
243 }
244
245 out:
246 return err;
247 }
248
249 /* The backend is now connected so complete the connection process on our side */
250 static int
pcifront_connect(struct pcifront_device * pdev)251 pcifront_connect(struct pcifront_device *pdev)
252 {
253 device_t nexus;
254 devclass_t nexus_devclass;
255
256 /* We will add our device as a child of the nexus0 device */
257 if (!(nexus_devclass = devclass_find("nexus")) ||
258 !(nexus = devclass_get_device(nexus_devclass, 0))) {
259 WPRINTF("could not find nexus0!\n");
260 return -1;
261 }
262
263 /* Create a newbus device representing this frontend instance */
264 pdev->ndev = BUS_ADD_CHILD(nexus, 0, "xpcife", pdev->unit);
265 if (!pdev->ndev) {
266 WPRINTF("could not create xpcife%d!\n", pdev->unit);
267 return -EFAULT;
268 }
269 get_pdev(pdev);
270 device_set_ivars(pdev->ndev, pdev);
271
272 /* Good to go connected now */
273 xenbus_switch_state(pdev->xdev, NULL, XenbusStateConnected);
274
275 printf("pcifront: connected to %s\n", pdev->xdev->nodename);
276
277 mtx_lock(&Giant);
278 device_probe_and_attach(pdev->ndev);
279 mtx_unlock(&Giant);
280
281 return 0;
282 }
283
284 /* The backend is closing so process a disconnect */
285 static int
pcifront_disconnect(struct pcifront_device * pdev)286 pcifront_disconnect(struct pcifront_device *pdev)
287 {
288 int err = 0;
289 XenbusState prev_state;
290
291 prev_state = xenbus_read_driver_state(pdev->xdev->nodename);
292
293 if (prev_state < XenbusStateClosing) {
294 err = xenbus_switch_state(pdev->xdev, NULL, XenbusStateClosing);
295 if (!err && prev_state == XenbusStateConnected) {
296 /* TODO - need to detach the newbus devices */
297 }
298 }
299
300 return err;
301 }
302
303 /* Process a probe from the xenbus */
304 static int
pcifront_probe(struct xenbus_device * xdev,const struct xenbus_device_id * id)305 pcifront_probe(struct xenbus_device *xdev,
306 const struct xenbus_device_id *id)
307 {
308 int err = 0;
309 struct pcifront_device *pdev;
310
311 DPRINTF("xenbus probing\n");
312
313 if ((pdev = alloc_pdev(xdev)) == NULL)
314 goto out;
315
316 err = pcifront_publish_info(pdev);
317
318 out:
319 if (err)
320 put_pdev(pdev);
321 return err;
322 }
323
324 /* Remove the xenbus PCI device */
325 static int
pcifront_remove(struct xenbus_device * xdev)326 pcifront_remove(struct xenbus_device *xdev)
327 {
328 DPRINTF("removing xenbus device node (%s)\n", xdev->nodename);
329 if (xdev->data)
330 put_pdev(xdev->data);
331 return 0;
332 }
333
334 /* Called by xenbus when our backend node changes state */
335 static void
pcifront_backend_changed(struct xenbus_device * xdev,XenbusState be_state)336 pcifront_backend_changed(struct xenbus_device *xdev,
337 XenbusState be_state)
338 {
339 struct pcifront_device *pdev = xdev->data;
340
341 switch (be_state) {
342 case XenbusStateClosing:
343 DPRINTF("backend closing (%s)\n", xdev->nodename);
344 pcifront_disconnect(pdev);
345 break;
346
347 case XenbusStateClosed:
348 DPRINTF("backend closed (%s)\n", xdev->nodename);
349 pcifront_disconnect(pdev);
350 break;
351
352 case XenbusStateConnected:
353 DPRINTF("backend connected (%s)\n", xdev->nodename);
354 pcifront_connect(pdev);
355 break;
356
357 default:
358 break;
359 }
360 }
361
362 /* Process PCI operation */
363 static int
do_pci_op(struct pcifront_device * pdev,struct xen_pci_op * op)364 do_pci_op(struct pcifront_device *pdev, struct xen_pci_op *op)
365 {
366 int err = 0;
367 struct xen_pci_op *active_op = &pdev->sh_info->op;
368 evtchn_port_t port = pdev->evtchn;
369 time_t timeout;
370
371 mtx_lock(&pdev->sh_info_lock);
372
373 memcpy(active_op, op, sizeof(struct xen_pci_op));
374
375 /* Go */
376 wmb();
377 set_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags);
378 notify_remote_via_evtchn(port);
379
380 timeout = time_uptime + 2;
381
382 clear_evtchn(port);
383
384 /* Spin while waiting for the answer */
385 while (test_bit
386 (_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags)) {
387 int err = HYPERVISOR_poll(&port, 1, 3 * hz);
388 if (err)
389 panic("Failed HYPERVISOR_poll: err=%d", err);
390 clear_evtchn(port);
391 if (time_uptime > timeout) {
392 WPRINTF("pciback not responding!!!\n");
393 clear_bit(_XEN_PCIF_active,
394 (unsigned long *)&pdev->sh_info->flags);
395 err = XEN_PCI_ERR_dev_not_found;
396 goto out;
397 }
398 }
399
400 memcpy(op, active_op, sizeof(struct xen_pci_op));
401
402 err = op->err;
403 out:
404 mtx_unlock(&pdev->sh_info_lock);
405 return err;
406 }
407
408 /* ** XenBus Driver registration ** */
409
410 static struct xenbus_device_id pcifront_ids[] = {
411 { "pci" },
412 { "" }
413 };
414
415 static struct xenbus_driver pcifront = {
416 .name = "pcifront",
417 .ids = pcifront_ids,
418 .probe = pcifront_probe,
419 .remove = pcifront_remove,
420 .otherend_changed = pcifront_backend_changed,
421 };
422
423 /* Register the driver with xenbus during sys init */
424 static void
pcifront_init(void * unused)425 pcifront_init(void *unused)
426 {
427 if ((xen_start_info->flags & SIF_INITDOMAIN))
428 return;
429
430 DPRINTF("xenbus registering\n");
431
432 xenbus_register_frontend(&pcifront);
433 }
434
SYSINIT(pciif,SI_SUB_PSEUDO,SI_ORDER_ANY,pcifront_init,NULL)435 SYSINIT(pciif, SI_SUB_PSEUDO, SI_ORDER_ANY, pcifront_init, NULL)
436
437
438 /* Newbus xpcife device driver probe */
439 static int
440 xpcife_probe(device_t dev)
441 {
442 #ifdef XEN_PCIDEV_FE_DEBUG
443 struct pcifront_device *pdev = (struct pcifront_device *)device_get_ivars(dev);
444 DPRINTF("xpcife probe (unit=%d)\n", pdev->unit);
445 #endif
446 return (BUS_PROBE_NOWILDCARD);
447 }
448
449 /* Newbus xpcife device driver attach */
450 static int
xpcife_attach(device_t dev)451 xpcife_attach(device_t dev)
452 {
453 struct pcifront_device *pdev = (struct pcifront_device *)device_get_ivars(dev);
454 int i, num_roots, len, err;
455 char str[64];
456 unsigned int domain, bus;
457
458 DPRINTF("xpcife attach (unit=%d)\n", pdev->unit);
459
460 err = xenbus_scanf(NULL, pdev->xdev->otherend,
461 "root_num", "%d", &num_roots);
462 if (err != 1) {
463 if (err == 0)
464 err = -EINVAL;
465 xenbus_dev_fatal(pdev->xdev, err,
466 "Error reading number of PCI roots");
467 goto out;
468 }
469
470 /* Add a pcib device for each root */
471 for (i = 0; i < num_roots; i++) {
472 device_t child;
473
474 len = snprintf(str, sizeof(str), "root-%d", i);
475 if (unlikely(len >= (sizeof(str) - 1))) {
476 err = -ENOMEM;
477 goto out;
478 }
479
480 err = xenbus_scanf(NULL, pdev->xdev->otherend, str,
481 "%x:%x", &domain, &bus);
482 if (err != 2) {
483 if (err >= 0)
484 err = -EINVAL;
485 xenbus_dev_fatal(pdev->xdev, err,
486 "Error reading PCI root %d", i);
487 goto out;
488 }
489 err = 0;
490 if (domain != pdev->xdev->otherend_id) {
491 err = -EINVAL;
492 xenbus_dev_fatal(pdev->xdev, err,
493 "Domain mismatch %d != %d", domain, pdev->xdev->otherend_id);
494 goto out;
495 }
496
497 child = device_add_child(dev, "pcib", bus);
498 if (!child) {
499 err = -ENOMEM;
500 xenbus_dev_fatal(pdev->xdev, err,
501 "Unable to create pcib%d", bus);
502 goto out;
503 }
504 }
505
506 out:
507 return bus_generic_attach(dev);
508 }
509
510 static devclass_t xpcife_devclass;
511
512 static device_method_t xpcife_methods[] = {
513 /* Device interface */
514 DEVMETHOD(device_probe, xpcife_probe),
515 DEVMETHOD(device_attach, xpcife_attach),
516 DEVMETHOD(device_detach, bus_generic_detach),
517 DEVMETHOD(device_shutdown, bus_generic_shutdown),
518 DEVMETHOD(device_suspend, bus_generic_suspend),
519 DEVMETHOD(device_resume, bus_generic_resume),
520 /* Bus interface */
521 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
522 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
523 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
524 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
525 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
526 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
527
528 DEVMETHOD_END
529 };
530
531 static driver_t xpcife_driver = {
532 "xpcife",
533 xpcife_methods,
534 0,
535 };
536
537 DRIVER_MODULE(xpcife, nexus, xpcife_driver, xpcife_devclass, 0, 0);
538
539
540 /* Newbus xen pcib device driver probe */
541 static int
xpcib_probe(device_t dev)542 xpcib_probe(device_t dev)
543 {
544 struct xpcib_softc *sc = (struct xpcib_softc *)device_get_softc(dev);
545 struct pcifront_device *pdev = (struct pcifront_device *)device_get_ivars(device_get_parent(dev));
546
547 DPRINTF("xpcib probe (bus=%d)\n", device_get_unit(dev));
548
549 sc->domain = pdev->xdev->otherend_id;
550 sc->bus = device_get_unit(dev);
551 sc->pdev = pdev;
552
553 return 0;
554 }
555
556 /* Newbus xen pcib device driver attach */
557 static int
xpcib_attach(device_t dev)558 xpcib_attach(device_t dev)
559 {
560 struct xpcib_softc *sc = (struct xpcib_softc *)device_get_softc(dev);
561
562 DPRINTF("xpcib attach (bus=%d)\n", sc->bus);
563
564 device_add_child(dev, "pci", -1);
565 return bus_generic_attach(dev);
566 }
567
568 static int
xpcib_read_ivar(device_t dev,device_t child,int which,uintptr_t * result)569 xpcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
570 {
571 struct xpcib_softc *sc = (struct xpcib_softc *)device_get_softc(dev);
572 switch (which) {
573 case PCIB_IVAR_BUS:
574 *result = sc->bus;
575 return 0;
576 }
577 return ENOENT;
578 }
579
580 /* Return the number of slots supported */
581 static int
xpcib_maxslots(device_t dev)582 xpcib_maxslots(device_t dev)
583 {
584 return 31;
585 }
586
587 #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
588
589 /* Read configuration space register */
590 static u_int32_t
xpcib_read_config(device_t dev,int bus,int slot,int func,int reg,int bytes)591 xpcib_read_config(device_t dev, int bus, int slot, int func,
592 int reg, int bytes)
593 {
594 struct xpcib_softc *sc = (struct xpcib_softc *)device_get_softc(dev);
595 struct xen_pci_op op = {
596 .cmd = XEN_PCI_OP_conf_read,
597 .domain = sc->domain,
598 .bus = sc->bus,
599 .devfn = PCI_DEVFN(slot, func),
600 .offset = reg,
601 .size = bytes,
602 };
603 int err;
604
605 err = do_pci_op(sc->pdev, &op);
606
607 DPRINTF("read config (b=%d, s=%d, f=%d, reg=%d, len=%d, val=%x, err=%d)\n",
608 bus, slot, func, reg, bytes, op.value, err);
609
610 if (err)
611 op.value = ~0;
612
613 return op.value;
614 }
615
616 /* Write configuration space register */
617 static void
xpcib_write_config(device_t dev,int bus,int slot,int func,int reg,u_int32_t data,int bytes)618 xpcib_write_config(device_t dev, int bus, int slot, int func,
619 int reg, u_int32_t data, int bytes)
620 {
621 struct xpcib_softc *sc = (struct xpcib_softc *)device_get_softc(dev);
622 struct xen_pci_op op = {
623 .cmd = XEN_PCI_OP_conf_write,
624 .domain = sc->domain,
625 .bus = sc->bus,
626 .devfn = PCI_DEVFN(slot, func),
627 .offset = reg,
628 .size = bytes,
629 .value = data,
630 };
631 int err;
632
633 err = do_pci_op(sc->pdev, &op);
634
635 DPRINTF("write config (b=%d, s=%d, f=%d, reg=%d, len=%d, val=%x, err=%d)\n",
636 bus, slot, func, reg, bytes, data, err);
637 }
638
639 static int
xpcib_route_interrupt(device_t pcib,device_t dev,int pin)640 xpcib_route_interrupt(device_t pcib, device_t dev, int pin)
641 {
642 struct pci_devinfo *dinfo = device_get_ivars(dev);
643 pcicfgregs *cfg = &dinfo->cfg;
644
645 DPRINTF("route intr (pin=%d, line=%d)\n", pin, cfg->intline);
646
647 return cfg->intline;
648 }
649
650 static device_method_t xpcib_methods[] = {
651 /* Device interface */
652 DEVMETHOD(device_probe, xpcib_probe),
653 DEVMETHOD(device_attach, xpcib_attach),
654 DEVMETHOD(device_detach, bus_generic_detach),
655 DEVMETHOD(device_shutdown, bus_generic_shutdown),
656 DEVMETHOD(device_suspend, bus_generic_suspend),
657 DEVMETHOD(device_resume, bus_generic_resume),
658
659 /* Bus interface */
660 DEVMETHOD(bus_read_ivar, xpcib_read_ivar),
661 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
662 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
663 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
664 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
665 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
666 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
667
668 /* pcib interface */
669 DEVMETHOD(pcib_maxslots, xpcib_maxslots),
670 DEVMETHOD(pcib_read_config, xpcib_read_config),
671 DEVMETHOD(pcib_write_config, xpcib_write_config),
672 DEVMETHOD(pcib_route_interrupt, xpcib_route_interrupt),
673 DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
674
675 DEVMETHOD_END
676 };
677
678 static devclass_t xpcib_devclass;
679
680 DEFINE_CLASS_0(pcib, xpcib_driver, xpcib_methods, sizeof(struct xpcib_softc));
681 DRIVER_MODULE(pcib, xpcife, xpcib_driver, xpcib_devclass, 0, 0);
682
683 /*
684 * Local variables:
685 * mode: C
686 * c-set-style: "BSD"
687 * c-basic-offset: 4
688 * tab-width: 4
689 * indent-tabs-mode: t
690 * End:
691 */
692