1 /*-
2 * Copyright 1998 Massachusetts Institute of Technology
3 *
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all
9 * supporting documentation, and that the name of M.I.T. not be used
10 * in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. M.I.T. makes
12 * no representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
14 * warranty.
15 *
16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/8.0/sys/amd64/amd64/nexus.c 177467 2008-03-20 21:24:32Z jhb $");
32
33 /*
34 * This code implements a `root nexus' for Intel Architecture
35 * machines. The function of the root nexus is to serve as an
36 * attachment point for both processors and buses, and to manage
37 * resources which are common to all of them. In particular,
38 * this code implements the core resource managers for interrupt
39 * requests, DMA requests (which rightfully should be a part of the
40 * ISA code but it's easier to do it here for now), I/O port addresses,
41 * and I/O memory address space.
42 */
43
44 #include "opt_isa.h"
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/bus.h>
49 #include <sys/kernel.h>
50 #include <sys/linker.h>
51 #include <sys/malloc.h>
52 #include <sys/module.h>
53 #include <machine/bus.h>
54 #include <machine/intr_machdep.h>
55 #include <sys/rman.h>
56 #include <sys/interrupt.h>
57
58 #include <machine/vmparam.h>
59 #include <vm/vm.h>
60 #include <vm/pmap.h>
61 #include <machine/pmap.h>
62
63 #include <machine/metadata.h>
64 #include <machine/nexusvar.h>
65 #include <machine/resource.h>
66 #include <machine/pc/bios.h>
67
68 #include "pcib_if.h"
69
70 #ifdef DEV_ISA
71 #include <isa/isavar.h>
72 #include <amd64/isa/isa.h>
73 #endif
74 #include <sys/rtprio.h>
75
76 static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
77
78 #define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
79
80 struct rman irq_rman, drq_rman, port_rman, mem_rman;
81
82 static int nexus_probe(device_t);
83 static int nexus_attach(device_t);
84 static int nexus_print_all_resources(device_t dev);
85 static int nexus_print_child(device_t, device_t);
86 static device_t nexus_add_child(device_t bus, int order, const char *name,
87 int unit);
88 static struct resource *nexus_alloc_resource(device_t, device_t, int, int *,
89 u_long, u_long, u_long, u_int);
90 #ifdef SMP
91 static int nexus_bind_intr(device_t, device_t, struct resource *, int);
92 #endif
93 static int nexus_config_intr(device_t, int, enum intr_trigger,
94 enum intr_polarity);
95 static int nexus_activate_resource(device_t, device_t, int, int,
96 struct resource *);
97 static int nexus_deactivate_resource(device_t, device_t, int, int,
98 struct resource *);
99 static int nexus_release_resource(device_t, device_t, int, int,
100 struct resource *);
101 static int nexus_setup_intr(device_t, device_t, struct resource *, int flags,
102 driver_filter_t filter, void (*)(void *), void *,
103 void **);
104 static int nexus_teardown_intr(device_t, device_t, struct resource *,
105 void *);
106 static struct resource_list *nexus_get_reslist(device_t dev, device_t child);
107 static int nexus_set_resource(device_t, device_t, int, int, u_long, u_long);
108 static int nexus_get_resource(device_t, device_t, int, int, u_long *, u_long *);
109 static void nexus_delete_resource(device_t, device_t, int, int);
110 static int nexus_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs);
111 static int nexus_release_msi(device_t pcib, device_t dev, int count, int *irqs);
112 static int nexus_alloc_msix(device_t pcib, device_t dev, int *irq);
113 static int nexus_release_msix(device_t pcib, device_t dev, int irq);
114 static int nexus_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data);
115
116 static device_method_t nexus_methods[] = {
117 /* Device interface */
118 DEVMETHOD(device_probe, nexus_probe),
119 DEVMETHOD(device_attach, nexus_attach),
120 DEVMETHOD(device_detach, bus_generic_detach),
121 DEVMETHOD(device_shutdown, bus_generic_shutdown),
122 DEVMETHOD(device_suspend, bus_generic_suspend),
123 DEVMETHOD(device_resume, bus_generic_resume),
124
125 /* Bus interface */
126 DEVMETHOD(bus_print_child, nexus_print_child),
127 DEVMETHOD(bus_add_child, nexus_add_child),
128 DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
129 DEVMETHOD(bus_release_resource, nexus_release_resource),
130 DEVMETHOD(bus_activate_resource, nexus_activate_resource),
131 DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
132 DEVMETHOD(bus_setup_intr, nexus_setup_intr),
133 DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
134 #ifdef SMP
135 DEVMETHOD(bus_bind_intr, nexus_bind_intr),
136 #endif
137 DEVMETHOD(bus_config_intr, nexus_config_intr),
138 DEVMETHOD(bus_get_resource_list, nexus_get_reslist),
139 DEVMETHOD(bus_set_resource, nexus_set_resource),
140 DEVMETHOD(bus_get_resource, nexus_get_resource),
141 DEVMETHOD(bus_delete_resource, nexus_delete_resource),
142
143 /* pcib interface */
144 DEVMETHOD(pcib_alloc_msi, nexus_alloc_msi),
145 DEVMETHOD(pcib_release_msi, nexus_release_msi),
146 DEVMETHOD(pcib_alloc_msix, nexus_alloc_msix),
147 DEVMETHOD(pcib_release_msix, nexus_release_msix),
148 DEVMETHOD(pcib_map_msi, nexus_map_msi),
149
150 { 0, 0 }
151 };
152
153 DEFINE_CLASS_0(nexus, nexus_driver, nexus_methods, 1);
154 static devclass_t nexus_devclass;
155
156 DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0);
157
158 static int
159 nexus_probe(device_t dev)
160 {
161
162 device_quiet(dev); /* suppress attach message for neatness */
163 return (BUS_PROBE_GENERIC);
164 }
165
166 void
167 nexus_init_resources(void)
168 {
169 int irq;
170
171 /*
172 * XXX working notes:
173 *
174 * - IRQ resource creation should be moved to the PIC/APIC driver.
175 * - DRQ resource creation should be moved to the DMAC driver.
176 * - The above should be sorted to probe earlier than any child busses.
177 *
178 * - Leave I/O and memory creation here, as child probes may need them.
179 * (especially eg. ACPI)
180 */
181
182 /*
183 * IRQ's are on the mainboard on old systems, but on the ISA part
184 * of PCI->ISA bridges. There would be multiple sets of IRQs on
185 * multi-ISA-bus systems. PCI interrupts are routed to the ISA
186 * component, so in a way, PCI can be a partial child of an ISA bus(!).
187 * APIC interrupts are global though.
188 */
189 irq_rman.rm_start = 0;
190 irq_rman.rm_type = RMAN_ARRAY;
191 irq_rman.rm_descr = "Interrupt request lines";
192 irq_rman.rm_end = NUM_IO_INTS - 1;
193 if (rman_init(&irq_rman))
194 panic("nexus_init_resources irq_rman");
195
196 /*
197 * We search for regions of existing IRQs and add those to the IRQ
198 * resource manager.
199 */
200 for (irq = 0; irq < NUM_IO_INTS; irq++)
201 if (intr_lookup_source(irq) != NULL)
202 if (rman_manage_region(&irq_rman, irq, irq) != 0)
203 panic("nexus_init_resources irq_rman add");
204
205 /*
206 * ISA DMA on PCI systems is implemented in the ISA part of each
207 * PCI->ISA bridge and the channels can be duplicated if there are
208 * multiple bridges. (eg: laptops with docking stations)
209 */
210 drq_rman.rm_start = 0;
211 drq_rman.rm_end = 7;
212 drq_rman.rm_type = RMAN_ARRAY;
213 drq_rman.rm_descr = "DMA request lines";
214 /* XXX drq 0 not available on some machines */
215 if (rman_init(&drq_rman)
216 || rman_manage_region(&drq_rman,
217 drq_rman.rm_start, drq_rman.rm_end))
218 panic("nexus_init_resources drq_rman");
219
220 /*
221 * However, IO ports and Memory truely are global at this level,
222 * as are APIC interrupts (however many IO APICS there turn out
223 * to be on large systems..)
224 */
225 port_rman.rm_start = 0;
226 port_rman.rm_end = 0xffff;
227 port_rman.rm_type = RMAN_ARRAY;
228 port_rman.rm_descr = "I/O ports";
229 if (rman_init(&port_rman)
230 || rman_manage_region(&port_rman, 0, 0xffff))
231 panic("nexus_init_resources port_rman");
232
233 mem_rman.rm_start = 0;
234 mem_rman.rm_end = ~0u;
235 mem_rman.rm_type = RMAN_ARRAY;
236 mem_rman.rm_descr = "I/O memory addresses";
237 if (rman_init(&mem_rman)
238 || rman_manage_region(&mem_rman, 0, ~0))
239 panic("nexus_init_resources mem_rman");
240 }
241
242 static int
243 nexus_attach(device_t dev)
244 {
245
246 nexus_init_resources();
247 bus_generic_probe(dev);
248
249 /*
250 * Explicitly add the legacy0 device here. Other platform
251 * types (such as ACPI), use their own nexus(4) subclass
252 * driver to override this routine and add their own root bus.
253 */
254 if (BUS_ADD_CHILD(dev, 10, "legacy", 0) == NULL)
255 panic("legacy: could not attach");
256 bus_generic_attach(dev);
257 return 0;
258 }
259
260 static int
261 nexus_print_all_resources(device_t dev)
262 {
263 struct nexus_device *ndev = DEVTONX(dev);
264 struct resource_list *rl = &ndev->nx_resources;
265 int retval = 0;
266
267 if (STAILQ_FIRST(rl))
268 retval += printf(" at");
269
270 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
271 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
272 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
273
274 return retval;
275 }
276
277 static int
278 nexus_print_child(device_t bus, device_t child)
279 {
280 int retval = 0;
281
282 retval += bus_print_child_header(bus, child);
283 retval += nexus_print_all_resources(child);
284 if (device_get_flags(child))
285 retval += printf(" flags %#x", device_get_flags(child));
286 retval += printf(" on motherboard\n"); /* XXX "motherboard", ick */
287
288 return (retval);
289 }
290
291 static device_t
292 nexus_add_child(device_t bus, int order, const char *name, int unit)
293 {
294 device_t child;
295 struct nexus_device *ndev;
296
297 ndev = malloc(sizeof(struct nexus_device), M_NEXUSDEV, M_NOWAIT|M_ZERO);
298 if (!ndev)
299 return(0);
300 resource_list_init(&ndev->nx_resources);
301
302 child = device_add_child_ordered(bus, order, name, unit);
303
304 /* should we free this in nexus_child_detached? */
305 device_set_ivars(child, ndev);
306
307 return(child);
308 }
309
310 /*
311 * Allocate a resource on behalf of child. NB: child is usually going to be a
312 * child of one of our descendants, not a direct child of nexus0.
313 */
314 static struct resource *
315 nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
316 u_long start, u_long end, u_long count, u_int flags)
317 {
318 struct nexus_device *ndev = DEVTONX(child);
319 struct resource *rv;
320 struct resource_list_entry *rle;
321 struct rman *rm;
322 int needactivate = flags & RF_ACTIVE;
323
324 /*
325 * If this is an allocation of the "default" range for a given RID, and
326 * we know what the resources for this device are (ie. they aren't maintained
327 * by a child bus), then work out the start/end values.
328 */
329 if ((start == 0UL) && (end == ~0UL) && (count == 1)) {
330 if (ndev == NULL)
331 return(NULL);
332 rle = resource_list_find(&ndev->nx_resources, type, *rid);
333 if (rle == NULL)
334 return(NULL);
335 start = rle->start;
336 end = rle->end;
337 count = rle->count;
338 }
339
340 flags &= ~RF_ACTIVE;
341
342 switch (type) {
343 case SYS_RES_IRQ:
344 rm = &irq_rman;
345 break;
346
347 case SYS_RES_DRQ:
348 rm = &drq_rman;
349 break;
350
351 case SYS_RES_IOPORT:
352 rm = &port_rman;
353 break;
354
355 case SYS_RES_MEMORY:
356 rm = &mem_rman;
357 break;
358
359 default:
360 return 0;
361 }
362
363 rv = rman_reserve_resource(rm, start, end, count, flags, child);
364 if (rv == 0)
365 return 0;
366 rman_set_rid(rv, *rid);
367
368 if (needactivate) {
369 if (bus_activate_resource(child, type, *rid, rv)) {
370 rman_release_resource(rv);
371 return 0;
372 }
373 }
374
375 return rv;
376 }
377
378 static int
379 nexus_activate_resource(device_t bus, device_t child, int type, int rid,
380 struct resource *r)
381 {
382
383 /*
384 * If this is a memory resource, map it into the kernel.
385 */
386 if (type == SYS_RES_MEMORY) {
387 void *vaddr;
388
389 vaddr = pmap_mapdev(rman_get_start(r), rman_get_size(r));
390 rman_set_virtual(r, vaddr);
391 rman_set_bustag(r, AMD64_BUS_SPACE_MEM);
392 rman_set_bushandle(r, (bus_space_handle_t) vaddr);
393 } else if (type == SYS_RES_IOPORT) {
394 rman_set_bustag(r, AMD64_BUS_SPACE_IO);
395 rman_set_bushandle(r, rman_get_start(r));
396 }
397 return (rman_activate_resource(r));
398 }
399
400 static int
401 nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
402 struct resource *r)
403 {
404 /*
405 * If this is a memory resource, unmap it.
406 */
407 if (type == SYS_RES_MEMORY) {
408 pmap_unmapdev((vm_offset_t)rman_get_virtual(r),
409 rman_get_size(r));
410 }
411
412 return (rman_deactivate_resource(r));
413 }
414
415 static int
416 nexus_release_resource(device_t bus, device_t child, int type, int rid,
417 struct resource *r)
418 {
419 if (rman_get_flags(r) & RF_ACTIVE) {
420 int error = bus_deactivate_resource(child, type, rid, r);
421 if (error)
422 return error;
423 }
424 return (rman_release_resource(r));
425 }
426
427 /*
428 * Currently this uses the really grody interface from kern/kern_intr.c
429 * (which really doesn't belong in kern/anything.c). Eventually, all of
430 * the code in kern_intr.c and machdep_intr.c should get moved here, since
431 * this is going to be the official interface.
432 */
433 static int
434 nexus_setup_intr(device_t bus, device_t child, struct resource *irq,
435 int flags, driver_filter_t filter, void (*ihand)(void *),
436 void *arg, void **cookiep)
437 {
438 int error;
439
440 /* somebody tried to setup an irq that failed to allocate! */
441 if (irq == NULL)
442 panic("nexus_setup_intr: NULL irq resource!");
443
444 *cookiep = 0;
445 if ((rman_get_flags(irq) & RF_SHAREABLE) == 0)
446 flags |= INTR_EXCL;
447
448 /*
449 * We depend here on rman_activate_resource() being idempotent.
450 */
451 error = rman_activate_resource(irq);
452 if (error)
453 return (error);
454
455 error = intr_add_handler(device_get_nameunit(child),
456 rman_get_start(irq), filter, ihand, arg, flags, cookiep);
457
458 return (error);
459 }
460
461 static int
462 nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih)
463 {
464 return (intr_remove_handler(ih));
465 }
466
467 #ifdef SMP
468 static int
469 nexus_bind_intr(device_t dev, device_t child, struct resource *irq, int cpu)
470 {
471 return (intr_bind(rman_get_start(irq), cpu));
472 }
473 #endif
474
475 static int
476 nexus_config_intr(device_t dev, int irq, enum intr_trigger trig,
477 enum intr_polarity pol)
478 {
479 return (intr_config_intr(irq, trig, pol));
480 }
481
482 static struct resource_list *
483 nexus_get_reslist(device_t dev, device_t child)
484 {
485 struct nexus_device *ndev = DEVTONX(child);
486
487 return (&ndev->nx_resources);
488 }
489
490 static int
491 nexus_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count)
492 {
493 struct nexus_device *ndev = DEVTONX(child);
494 struct resource_list *rl = &ndev->nx_resources;
495
496 /* XXX this should return a success/failure indicator */
497 resource_list_add(rl, type, rid, start, start + count - 1, count);
498 return(0);
499 }
500
501 static int
502 nexus_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp)
503 {
504 struct nexus_device *ndev = DEVTONX(child);
505 struct resource_list *rl = &ndev->nx_resources;
506 struct resource_list_entry *rle;
507
508 rle = resource_list_find(rl, type, rid);
509 if (!rle)
510 return(ENOENT);
511 if (startp)
512 *startp = rle->start;
513 if (countp)
514 *countp = rle->count;
515 return(0);
516 }
517
518 static void
519 nexus_delete_resource(device_t dev, device_t child, int type, int rid)
520 {
521 struct nexus_device *ndev = DEVTONX(child);
522 struct resource_list *rl = &ndev->nx_resources;
523
524 resource_list_delete(rl, type, rid);
525 }
526
527 /* Called from the MSI code to add new IRQs to the IRQ rman. */
528 void
529 nexus_add_irq(u_long irq)
530 {
531
532 if (rman_manage_region(&irq_rman, irq, irq) != 0)
533 panic("%s: failed", __func__);
534 }
535
536 static int
537 nexus_alloc_msix(device_t pcib, device_t dev, int *irq)
538 {
539
540 return (msix_alloc(dev, irq));
541 }
542
543 static int
544 nexus_release_msix(device_t pcib, device_t dev, int irq)
545 {
546
547 return (msix_release(irq));
548 }
549
550 static int
551 nexus_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs)
552 {
553
554 return (msi_alloc(dev, count, maxcount, irqs));
555 }
556
557 static int
558 nexus_release_msi(device_t pcib, device_t dev, int count, int *irqs)
559 {
560
561 return (msi_release(irqs, count));
562 }
563
564 static int
565 nexus_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data)
566 {
567
568 return (msi_map(irq, addr, data));
569 }
570
571 /* Placeholder for system RAM. */
572 static void
573 ram_identify(driver_t *driver, device_t parent)
574 {
575
576 if (resource_disabled("ram", 0))
577 return;
578 if (BUS_ADD_CHILD(parent, 0, "ram", 0) == NULL)
579 panic("ram_identify");
580 }
581
582 static int
583 ram_probe(device_t dev)
584 {
585
586 device_quiet(dev);
587 device_set_desc(dev, "System RAM");
588 return (0);
589 }
590
591 static int
592 ram_attach(device_t dev)
593 {
594 struct bios_smap *smapbase, *smap, *smapend;
595 struct resource *res;
596 caddr_t kmdp;
597 uint32_t smapsize;
598 int error, rid;
599
600 /* Retrieve the system memory map from the loader. */
601 kmdp = preload_search_by_type("elf kernel");
602 if (kmdp == NULL)
603 kmdp = preload_search_by_type("elf64 kernel");
604 smapbase = (struct bios_smap *)preload_search_info(kmdp,
605 MODINFO_METADATA | MODINFOMD_SMAP);
606 smapsize = *((u_int32_t *)smapbase - 1);
607 smapend = (struct bios_smap *)((uintptr_t)smapbase + smapsize);
608
609 rid = 0;
610 for (smap = smapbase; smap < smapend; smap++) {
611 if (smap->type != SMAP_TYPE_MEMORY || smap->length == 0)
612 continue;
613 error = bus_set_resource(dev, SYS_RES_MEMORY, rid, smap->base,
614 smap->length);
615 if (error)
616 panic("ram_attach: resource %d failed set with %d", rid,
617 error);
618 res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 0);
619 if (res == NULL)
620 panic("ram_attach: resource %d failed to attach", rid);
621 rid++;
622 }
623 return (0);
624 }
625
626 static device_method_t ram_methods[] = {
627 /* Device interface */
628 DEVMETHOD(device_identify, ram_identify),
629 DEVMETHOD(device_probe, ram_probe),
630 DEVMETHOD(device_attach, ram_attach),
631 { 0, 0 }
632 };
633
634 static driver_t ram_driver = {
635 "ram",
636 ram_methods,
637 1, /* no softc */
638 };
639
640 static devclass_t ram_devclass;
641
642 DRIVER_MODULE(ram, nexus, ram_driver, ram_devclass, 0, 0);
643
644 #ifdef DEV_ISA
645 /*
646 * Placeholder which claims PnP 'devices' which describe system
647 * resources.
648 */
649 static struct isa_pnp_id sysresource_ids[] = {
650 { 0x010cd041 /* PNP0c01 */, "System Memory" },
651 { 0x020cd041 /* PNP0c02 */, "System Resource" },
652 { 0 }
653 };
654
655 static int
656 sysresource_probe(device_t dev)
657 {
658 int result;
659
660 if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, sysresource_ids)) <= 0) {
661 device_quiet(dev);
662 }
663 return(result);
664 }
665
666 static int
667 sysresource_attach(device_t dev)
668 {
669 return(0);
670 }
671
672 static device_method_t sysresource_methods[] = {
673 /* Device interface */
674 DEVMETHOD(device_probe, sysresource_probe),
675 DEVMETHOD(device_attach, sysresource_attach),
676 DEVMETHOD(device_detach, bus_generic_detach),
677 DEVMETHOD(device_shutdown, bus_generic_shutdown),
678 DEVMETHOD(device_suspend, bus_generic_suspend),
679 DEVMETHOD(device_resume, bus_generic_resume),
680 { 0, 0 }
681 };
682
683 static driver_t sysresource_driver = {
684 "sysresource",
685 sysresource_methods,
686 1, /* no softc */
687 };
688
689 static devclass_t sysresource_devclass;
690
691 DRIVER_MODULE(sysresource, isa, sysresource_driver, sysresource_devclass, 0, 0);
692 #endif /* DEV_ISA */
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