2 * Copyright 1998 Massachusetts Institute of Technology
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
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
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
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.
52 #include <sys/param.h>
53 #include <sys/systm.h>
55 #include <sys/kernel.h>
56 #include <sys/linker.h>
57 #include <sys/malloc.h>
58 #include <sys/module.h>
59 #include <machine/bus.h>
60 #include <machine/intr_machdep.h>
62 #include <sys/interrupt.h>
64 #include <machine/md_var.h>
66 #include <vm/vm_param.h>
67 #include <vm/vm_page.h>
68 #include <vm/vm_phys.h>
71 #include <machine/metadata.h>
72 #include <machine/nexusvar.h>
73 #include <machine/resource.h>
74 #include <machine/pc/bios.h>
81 #include <isa/isavar.h>
82 #include <isa/isareg.h>
84 #include <sys/rtprio.h>
86 #define ELF_KERN_STR ("elf"__XSTRING(__ELF_WORD_SIZE)" kernel")
88 static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
90 #define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
92 struct rman irq_rman, drq_rman, port_rman, mem_rman;
94 static int nexus_probe(device_t);
95 static int nexus_attach(device_t);
96 static int nexus_print_all_resources(device_t dev);
97 static int nexus_print_child(device_t, device_t);
98 static device_t nexus_add_child(device_t bus, u_int order, const char *name,
100 static struct resource *nexus_alloc_resource(device_t, device_t, int, int *,
101 rman_res_t, rman_res_t, rman_res_t,
103 static int nexus_adjust_resource(device_t, device_t, int, struct resource *,
104 rman_res_t, rman_res_t);
106 static int nexus_bind_intr(device_t, device_t, struct resource *, int);
108 static int nexus_config_intr(device_t, int, enum intr_trigger,
110 static int nexus_describe_intr(device_t dev, device_t child,
111 struct resource *irq, void *cookie,
113 static int nexus_activate_resource(device_t, device_t, int, int,
115 static int nexus_deactivate_resource(device_t, device_t, int, int,
117 static int nexus_map_resource(device_t bus, device_t child, int type,
119 struct resource_map_request *argsp,
120 struct resource_map *map);
121 static int nexus_unmap_resource(device_t bus, device_t child, int type,
122 struct resource *r, struct resource_map *map);
123 static int nexus_release_resource(device_t, device_t, int, int,
125 static int nexus_setup_intr(device_t, device_t, struct resource *, int flags,
126 driver_filter_t filter, void (*)(void *), void *,
128 static int nexus_teardown_intr(device_t, device_t, struct resource *,
130 static int nexus_suspend_intr(device_t, device_t, struct resource *);
131 static int nexus_resume_intr(device_t, device_t, struct resource *);
132 static struct resource_list *nexus_get_reslist(device_t dev, device_t child);
133 static int nexus_set_resource(device_t, device_t, int, int,
134 rman_res_t, rman_res_t);
135 static int nexus_get_resource(device_t, device_t, int, int,
136 rman_res_t *, rman_res_t *);
137 static void nexus_delete_resource(device_t, device_t, int, int);
138 static int nexus_get_cpus(device_t, device_t, enum cpu_sets, size_t,
140 #if defined(DEV_APIC) && defined(DEV_PCI)
141 static int nexus_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs);
142 static int nexus_release_msi(device_t pcib, device_t dev, int count, int *irqs);
143 static int nexus_alloc_msix(device_t pcib, device_t dev, int *irq);
144 static int nexus_release_msix(device_t pcib, device_t dev, int irq);
145 static int nexus_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data);
148 static device_method_t nexus_methods[] = {
149 /* Device interface */
150 DEVMETHOD(device_probe, nexus_probe),
151 DEVMETHOD(device_attach, nexus_attach),
152 DEVMETHOD(device_detach, bus_generic_detach),
153 DEVMETHOD(device_shutdown, bus_generic_shutdown),
154 DEVMETHOD(device_suspend, bus_generic_suspend),
155 DEVMETHOD(device_resume, bus_generic_resume),
158 DEVMETHOD(bus_print_child, nexus_print_child),
159 DEVMETHOD(bus_add_child, nexus_add_child),
160 DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
161 DEVMETHOD(bus_adjust_resource, nexus_adjust_resource),
162 DEVMETHOD(bus_release_resource, nexus_release_resource),
163 DEVMETHOD(bus_activate_resource, nexus_activate_resource),
164 DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
165 DEVMETHOD(bus_map_resource, nexus_map_resource),
166 DEVMETHOD(bus_unmap_resource, nexus_unmap_resource),
167 DEVMETHOD(bus_setup_intr, nexus_setup_intr),
168 DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
169 DEVMETHOD(bus_suspend_intr, nexus_suspend_intr),
170 DEVMETHOD(bus_resume_intr, nexus_resume_intr),
172 DEVMETHOD(bus_bind_intr, nexus_bind_intr),
174 DEVMETHOD(bus_config_intr, nexus_config_intr),
175 DEVMETHOD(bus_describe_intr, nexus_describe_intr),
176 DEVMETHOD(bus_get_resource_list, nexus_get_reslist),
177 DEVMETHOD(bus_set_resource, nexus_set_resource),
178 DEVMETHOD(bus_get_resource, nexus_get_resource),
179 DEVMETHOD(bus_delete_resource, nexus_delete_resource),
180 DEVMETHOD(bus_get_cpus, nexus_get_cpus),
183 #if defined(DEV_APIC) && defined(DEV_PCI)
184 DEVMETHOD(pcib_alloc_msi, nexus_alloc_msi),
185 DEVMETHOD(pcib_release_msi, nexus_release_msi),
186 DEVMETHOD(pcib_alloc_msix, nexus_alloc_msix),
187 DEVMETHOD(pcib_release_msix, nexus_release_msix),
188 DEVMETHOD(pcib_map_msi, nexus_map_msi),
194 DEFINE_CLASS_0(nexus, nexus_driver, nexus_methods, 1);
195 static devclass_t nexus_devclass;
197 DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0);
200 nexus_probe(device_t dev)
203 device_quiet(dev); /* suppress attach message for neatness */
204 return (BUS_PROBE_GENERIC);
208 nexus_init_resources(void)
215 * - IRQ resource creation should be moved to the PIC/APIC driver.
216 * - DRQ resource creation should be moved to the DMAC driver.
217 * - The above should be sorted to probe earlier than any child buses.
219 * - Leave I/O and memory creation here, as child probes may need them.
220 * (especially eg. ACPI)
224 * IRQ's are on the mainboard on old systems, but on the ISA part
225 * of PCI->ISA bridges. There would be multiple sets of IRQs on
226 * multi-ISA-bus systems. PCI interrupts are routed to the ISA
227 * component, so in a way, PCI can be a partial child of an ISA bus(!).
228 * APIC interrupts are global though.
230 irq_rman.rm_start = 0;
231 irq_rman.rm_type = RMAN_ARRAY;
232 irq_rman.rm_descr = "Interrupt request lines";
233 irq_rman.rm_end = num_io_irqs - 1;
234 if (rman_init(&irq_rman))
235 panic("nexus_init_resources irq_rman");
238 * We search for regions of existing IRQs and add those to the IRQ
241 for (irq = 0; irq < num_io_irqs; irq++)
242 if (intr_lookup_source(irq) != NULL)
243 if (rman_manage_region(&irq_rman, irq, irq) != 0)
244 panic("nexus_init_resources irq_rman add");
247 * ISA DMA on PCI systems is implemented in the ISA part of each
248 * PCI->ISA bridge and the channels can be duplicated if there are
249 * multiple bridges. (eg: laptops with docking stations)
251 drq_rman.rm_start = 0;
253 drq_rman.rm_type = RMAN_ARRAY;
254 drq_rman.rm_descr = "DMA request lines";
255 /* XXX drq 0 not available on some machines */
256 if (rman_init(&drq_rman)
257 || rman_manage_region(&drq_rman,
258 drq_rman.rm_start, drq_rman.rm_end))
259 panic("nexus_init_resources drq_rman");
262 * However, IO ports and Memory truely are global at this level,
263 * as are APIC interrupts (however many IO APICS there turn out
264 * to be on large systems..)
266 port_rman.rm_start = 0;
267 port_rman.rm_end = 0xffff;
268 port_rman.rm_type = RMAN_ARRAY;
269 port_rman.rm_descr = "I/O ports";
270 if (rman_init(&port_rman)
271 || rman_manage_region(&port_rman, 0, 0xffff))
272 panic("nexus_init_resources port_rman");
274 mem_rman.rm_start = 0;
275 mem_rman.rm_end = cpu_getmaxphyaddr();
276 mem_rman.rm_type = RMAN_ARRAY;
277 mem_rman.rm_descr = "I/O memory addresses";
278 if (rman_init(&mem_rman)
279 || rman_manage_region(&mem_rman, 0, mem_rman.rm_end))
280 panic("nexus_init_resources mem_rman");
284 nexus_attach(device_t dev)
287 nexus_init_resources();
288 bus_generic_probe(dev);
291 * Explicitly add the legacy0 device here. Other platform
292 * types (such as ACPI), use their own nexus(4) subclass
293 * driver to override this routine and add their own root bus.
295 if (BUS_ADD_CHILD(dev, 10, "legacy", 0) == NULL)
296 panic("legacy: could not attach");
297 bus_generic_attach(dev);
302 nexus_print_all_resources(device_t dev)
304 struct nexus_device *ndev = DEVTONX(dev);
305 struct resource_list *rl = &ndev->nx_resources;
308 if (STAILQ_FIRST(rl))
309 retval += printf(" at");
311 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#jx");
312 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#jx");
313 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
319 nexus_print_child(device_t bus, device_t child)
323 retval += bus_print_child_header(bus, child);
324 retval += nexus_print_all_resources(child);
325 if (device_get_flags(child))
326 retval += printf(" flags %#x", device_get_flags(child));
327 retval += printf("\n");
333 nexus_add_child(device_t bus, u_int order, const char *name, int unit)
336 struct nexus_device *ndev;
338 ndev = malloc(sizeof(struct nexus_device), M_NEXUSDEV, M_NOWAIT|M_ZERO);
341 resource_list_init(&ndev->nx_resources);
343 child = device_add_child_ordered(bus, order, name, unit);
345 /* should we free this in nexus_child_detached? */
346 device_set_ivars(child, ndev);
369 * Allocate a resource on behalf of child. NB: child is usually going to be a
370 * child of one of our descendants, not a direct child of nexus0.
371 * (Exceptions include npx.)
373 static struct resource *
374 nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
375 rman_res_t start, rman_res_t end, rman_res_t count,
378 struct nexus_device *ndev = DEVTONX(child);
380 struct resource_list_entry *rle;
382 int needactivate = flags & RF_ACTIVE;
385 * If this is an allocation of the "default" range for a given
386 * RID, and we know what the resources for this device are
387 * (ie. they aren't maintained by a child bus), then work out
388 * the start/end values.
390 if (RMAN_IS_DEFAULT_RANGE(start, end) && (count == 1)) {
391 if (device_get_parent(child) != bus || ndev == NULL)
393 rle = resource_list_find(&ndev->nx_resources, type, *rid);
402 rm = nexus_rman(type);
406 rv = rman_reserve_resource(rm, start, end, count, flags, child);
409 rman_set_rid(rv, *rid);
412 if (bus_activate_resource(child, type, *rid, rv)) {
413 rman_release_resource(rv);
422 nexus_adjust_resource(device_t bus, device_t child, int type,
423 struct resource *r, rman_res_t start, rman_res_t end)
427 rm = nexus_rman(type);
430 if (!rman_is_region_manager(r, rm))
432 return (rman_adjust_resource(r, start, end));
436 nexus_activate_resource(device_t bus, device_t child, int type, int rid,
439 struct resource_map map;
442 error = rman_activate_resource(r);
446 if (!(rman_get_flags(r) & RF_UNMAPPED) &&
447 (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT)) {
448 error = nexus_map_resource(bus, child, type, r, NULL, &map);
450 rman_deactivate_resource(r);
454 rman_set_mapping(r,&map);
460 nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
463 struct resource_map map;
466 error = rman_deactivate_resource(r);
470 if (!(rman_get_flags(r) & RF_UNMAPPED) &&
471 (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT)) {
472 rman_get_mapping(r, &map);
473 nexus_unmap_resource(bus, child, type, r, &map);
479 nexus_map_resource(device_t bus, device_t child, int type, struct resource *r,
480 struct resource_map_request *argsp, struct resource_map *map)
482 struct resource_map_request args;
483 rman_res_t end, length, start;
485 /* Resources must be active to be mapped. */
486 if (!(rman_get_flags(r) & RF_ACTIVE))
489 /* Mappings are only supported on I/O and memory resources. */
498 resource_init_map_request(&args);
500 bcopy(argsp, &args, imin(argsp->size, args.size));
501 start = rman_get_start(r) + args.offset;
502 if (args.length == 0)
503 length = rman_get_size(r);
505 length = args.length;
506 end = start + length - 1;
507 if (start > rman_get_end(r) || start < rman_get_start(r))
509 if (end > rman_get_end(r) || end < start)
513 * If this is a memory resource, map it into the kernel.
517 map->r_bushandle = start;
518 map->r_bustag = X86_BUS_SPACE_IO;
519 map->r_size = length;
523 map->r_vaddr = pmap_mapdev_attr(start, length, args.memattr);
524 map->r_bustag = X86_BUS_SPACE_MEM;
525 map->r_size = length;
528 * The handle is the virtual address.
530 map->r_bushandle = (bus_space_handle_t)map->r_vaddr;
537 nexus_unmap_resource(device_t bus, device_t child, int type, struct resource *r,
538 struct resource_map *map)
542 * If this is a memory resource, unmap it.
546 pmap_unmapdev((vm_offset_t)map->r_vaddr, map->r_size);
557 nexus_release_resource(device_t bus, device_t child, int type, int rid,
561 if (rman_get_flags(r) & RF_ACTIVE) {
562 int error = bus_deactivate_resource(child, type, rid, r);
566 return (rman_release_resource(r));
570 * Currently this uses the really grody interface from kern/kern_intr.c
571 * (which really doesn't belong in kern/anything.c). Eventually, all of
572 * the code in kern_intr.c and machdep_intr.c should get moved here, since
573 * this is going to be the official interface.
576 nexus_setup_intr(device_t bus, device_t child, struct resource *irq,
577 int flags, driver_filter_t filter, void (*ihand)(void *),
578 void *arg, void **cookiep)
582 /* somebody tried to setup an irq that failed to allocate! */
584 panic("nexus_setup_intr: NULL irq resource!");
587 if ((rman_get_flags(irq) & RF_SHAREABLE) == 0)
591 * We depend here on rman_activate_resource() being idempotent.
593 error = rman_activate_resource(irq);
596 if (bus_get_domain(child, &domain) != 0)
599 error = intr_add_handler(device_get_nameunit(child),
600 rman_get_start(irq), filter, ihand, arg, flags, cookiep, domain);
602 rman_set_irq_cookie(irq, *cookiep);
608 nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih)
612 error = intr_remove_handler(ih);
614 rman_set_irq_cookie(r, NULL);
619 nexus_suspend_intr(device_t dev, device_t child, struct resource *irq)
621 return (intr_event_suspend_handler(rman_get_irq_cookie(irq)));
625 nexus_resume_intr(device_t dev, device_t child, struct resource *irq)
627 return (intr_event_resume_handler(rman_get_irq_cookie(irq)));
632 nexus_bind_intr(device_t dev, device_t child, struct resource *irq, int cpu)
634 return (intr_bind(rman_get_start(irq), cpu));
639 nexus_config_intr(device_t dev, int irq, enum intr_trigger trig,
640 enum intr_polarity pol)
642 return (intr_config_intr(irq, trig, pol));
646 nexus_describe_intr(device_t dev, device_t child, struct resource *irq,
647 void *cookie, const char *descr)
650 return (intr_describe(rman_get_start(irq), cookie, descr));
653 static struct resource_list *
654 nexus_get_reslist(device_t dev, device_t child)
656 struct nexus_device *ndev = DEVTONX(child);
658 return (&ndev->nx_resources);
662 nexus_set_resource(device_t dev, device_t child, int type, int rid,
663 rman_res_t start, rman_res_t count)
665 struct nexus_device *ndev = DEVTONX(child);
666 struct resource_list *rl = &ndev->nx_resources;
668 /* XXX this should return a success/failure indicator */
669 resource_list_add(rl, type, rid, start, start + count - 1, count);
674 nexus_get_resource(device_t dev, device_t child, int type, int rid,
675 rman_res_t *startp, rman_res_t *countp)
677 struct nexus_device *ndev = DEVTONX(child);
678 struct resource_list *rl = &ndev->nx_resources;
679 struct resource_list_entry *rle;
681 rle = resource_list_find(rl, type, rid);
685 *startp = rle->start;
687 *countp = rle->count;
692 nexus_delete_resource(device_t dev, device_t child, int type, int rid)
694 struct nexus_device *ndev = DEVTONX(child);
695 struct resource_list *rl = &ndev->nx_resources;
697 resource_list_delete(rl, type, rid);
701 nexus_get_cpus(device_t dev, device_t child, enum cpu_sets op, size_t setsize,
708 if (setsize != sizeof(cpuset_t))
714 return (bus_generic_get_cpus(dev, child, op, setsize, cpuset));
718 /* Called from the MSI code to add new IRQs to the IRQ rman. */
720 nexus_add_irq(u_long irq)
723 if (rman_manage_region(&irq_rman, irq, irq) != 0)
724 panic("%s: failed", __func__);
727 #if defined(DEV_APIC) && defined(DEV_PCI)
729 nexus_alloc_msix(device_t pcib, device_t dev, int *irq)
732 return (msix_alloc(dev, irq));
736 nexus_release_msix(device_t pcib, device_t dev, int irq)
739 return (msix_release(irq));
743 nexus_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, int *irqs)
746 return (msi_alloc(dev, count, maxcount, irqs));
750 nexus_release_msi(device_t pcib, device_t dev, int count, int *irqs)
753 return (msi_release(irqs, count));
757 nexus_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, uint32_t *data)
760 return (msi_map(irq, addr, data));
762 #endif /* DEV_APIC && DEV_PCI */
764 /* Placeholder for system RAM. */
766 ram_identify(driver_t *driver, device_t parent)
769 if (resource_disabled("ram", 0))
771 if (BUS_ADD_CHILD(parent, 0, "ram", 0) == NULL)
772 panic("ram_identify");
776 ram_probe(device_t dev)
780 device_set_desc(dev, "System RAM");
785 ram_attach(device_t dev)
787 struct bios_smap *smapbase, *smap, *smapend;
788 struct resource *res;
795 /* Retrieve the system memory map from the loader. */
796 kmdp = preload_search_by_type("elf kernel");
798 kmdp = preload_search_by_type(ELF_KERN_STR);
799 smapbase = (struct bios_smap *)preload_search_info(kmdp,
800 MODINFO_METADATA | MODINFOMD_SMAP);
801 if (smapbase != NULL) {
802 smapsize = *((u_int32_t *)smapbase - 1);
803 smapend = (struct bios_smap *)((uintptr_t)smapbase + smapsize);
806 for (smap = smapbase; smap < smapend; smap++) {
807 if (smap->type != SMAP_TYPE_MEMORY ||
810 if (smap->base > mem_rman.rm_end)
812 length = smap->base + smap->length > mem_rman.rm_end ?
813 mem_rman.rm_end - smap->base : smap->length;
814 error = bus_set_resource(dev, SYS_RES_MEMORY, rid,
818 "ram_attach: resource %d failed set with %d",
820 res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
823 panic("ram_attach: resource %d failed to attach",
831 * If the system map is not available, fall back to using
832 * dump_avail[]. We use the dump_avail[] array rather than
833 * phys_avail[] for the memory map as phys_avail[] contains
834 * holes for kernel memory, page 0, the message buffer, and
835 * the dcons buffer. We test the end address in the loop
836 * instead of the start since the start address for the first
839 for (rid = 0, p = dump_avail; p[1] != 0; rid++, p += 2) {
840 if (p[0] > mem_rman.rm_end)
842 length = (p[1] > mem_rman.rm_end ? mem_rman.rm_end : p[1]) -
844 error = bus_set_resource(dev, SYS_RES_MEMORY, rid, p[0],
847 panic("ram_attach: resource %d failed set with %d", rid,
849 res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 0);
851 panic("ram_attach: resource %d failed to attach", rid);
856 static device_method_t ram_methods[] = {
857 /* Device interface */
858 DEVMETHOD(device_identify, ram_identify),
859 DEVMETHOD(device_probe, ram_probe),
860 DEVMETHOD(device_attach, ram_attach),
864 static driver_t ram_driver = {
870 static devclass_t ram_devclass;
872 DRIVER_MODULE(ram, nexus, ram_driver, ram_devclass, 0, 0);
876 * Placeholder which claims PnP 'devices' which describe system
879 static struct isa_pnp_id sysresource_ids[] = {
880 { 0x010cd041 /* PNP0c01 */, "System Memory" },
881 { 0x020cd041 /* PNP0c02 */, "System Resource" },
886 sysresource_probe(device_t dev)
890 if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, sysresource_ids)) <= 0) {
897 sysresource_attach(device_t dev)
902 static device_method_t sysresource_methods[] = {
903 /* Device interface */
904 DEVMETHOD(device_probe, sysresource_probe),
905 DEVMETHOD(device_attach, sysresource_attach),
906 DEVMETHOD(device_detach, bus_generic_detach),
907 DEVMETHOD(device_shutdown, bus_generic_shutdown),
908 DEVMETHOD(device_suspend, bus_generic_suspend),
909 DEVMETHOD(device_resume, bus_generic_resume),
913 static driver_t sysresource_driver = {
919 static devclass_t sysresource_devclass;
921 DRIVER_MODULE(sysresource, isa, sysresource_driver, sysresource_devclass, 0, 0);
922 ISA_PNP_INFO(sysresource_ids);