kernel/nexus: Remove some unneeded includes.
[dragonfly.git] / sys / platform / pc32 / i386 / nexus.c
CommitLineData
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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 * $FreeBSD: src/sys/i386/i386/nexus.c,v 1.26.2.10 2003/02/22 13:16:45 imp Exp $
30 */
31
32/*
33 * This code implements a `root nexus' for Intel Architecture
34 * machines. The function of the root nexus is to serve as an
35 * attachment point for both processors and buses, and to manage
36 * resources which are common to all of them. In particular,
37 * this code implements the core resource managers for interrupt
38 * requests, DMA requests (which rightfully should be a part of the
39 * ISA code but it's easier to do it here for now), I/O port addresses,
40 * and I/O memory address space.
41 */
42
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43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/bus.h>
46#include <sys/kernel.h>
47#include <sys/malloc.h>
48#include <sys/module.h>
984263bc 49#include <sys/rman.h>
1b505979 50#include <sys/interrupt.h>
bef055ab 51#include <sys/machintr.h>
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52
53#include <machine/vmparam.h>
54#include <vm/vm.h>
55#include <vm/pmap.h>
56#include <machine/pmap.h>
57
2899c8b1 58#include <machine/nexusvar.h>
984263bc 59#include <machine/smp.h>
b2150df1 60#include <machine/intr_machdep.h>
ed4d621d 61#include <machine_base/apic/ioapic.h>
be98308a 62#include <machine_base/apic/lapic.h>
984263bc 63
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64#include "pcib_if.h"
65
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66static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
67struct nexus_device {
68 struct resource_list nx_resources;
2899c8b1 69 int nx_pcibus;
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70};
71
72#define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
73
cc506d27 74static struct rman irq_rman[MAXCPU], drq_rman, port_rman, mem_rman;
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75
76static int nexus_probe(device_t);
77static int nexus_attach(device_t);
78static int nexus_print_all_resources(device_t dev);
79static int nexus_print_child(device_t, device_t);
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80static device_t nexus_add_child(device_t bus, device_t parent, int order,
81 const char *name, int unit);
984263bc 82static struct resource *nexus_alloc_resource(device_t, device_t, int, int *,
4f7fe8c7 83 u_long, u_long, u_long, u_int, int);
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84static int nexus_read_ivar(device_t, device_t, int, uintptr_t *);
85static int nexus_write_ivar(device_t, device_t, int, uintptr_t);
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86static int nexus_activate_resource(device_t, device_t, int, int,
87 struct resource *);
88static int nexus_deactivate_resource(device_t, device_t, int, int,
89 struct resource *);
90static int nexus_release_resource(device_t, device_t, int, int,
91 struct resource *);
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92static int nexus_config_intr(device_t, device_t, int, enum intr_trigger,
93 enum intr_polarity);
984263bc 94static int nexus_setup_intr(device_t, device_t, struct resource *, int flags,
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95 void (*)(void *), void *, void **, lwkt_serialize_t,
96 const char *);
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97static int nexus_teardown_intr(device_t, device_t, struct resource *,
98 void *);
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99static int nexus_set_resource(device_t, device_t, int, int, u_long, u_long,
100 int);
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101static int nexus_get_resource(device_t, device_t, int, int, u_long *, u_long *);
102static void nexus_delete_resource(device_t, device_t, int, int);
103
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104static int nexus_alloc_msi(device_t, device_t, int, int, int *, int);
105static int nexus_release_msi(device_t, device_t, int, int *, int);
106static int nexus_map_msi(device_t, device_t, int, uint64_t *, uint32_t *, int);
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107static int nexus_alloc_msix(device_t, device_t, int *, int);
108static int nexus_release_msix(device_t, device_t, int, int);
be98308a 109
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110/*
111 * The device_identify method will cause nexus to automatically associate
112 * and attach to the root bus.
113 */
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114static device_method_t nexus_methods[] = {
115 /* Device interface */
39b5d600 116 DEVMETHOD(device_identify, bus_generic_identify),
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117 DEVMETHOD(device_probe, nexus_probe),
118 DEVMETHOD(device_attach, nexus_attach),
119 DEVMETHOD(device_detach, bus_generic_detach),
120 DEVMETHOD(device_shutdown, bus_generic_shutdown),
121 DEVMETHOD(device_suspend, bus_generic_suspend),
122 DEVMETHOD(device_resume, bus_generic_resume),
123
124 /* Bus interface */
125 DEVMETHOD(bus_print_child, nexus_print_child),
126 DEVMETHOD(bus_add_child, nexus_add_child),
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127 DEVMETHOD(bus_read_ivar, nexus_read_ivar),
128 DEVMETHOD(bus_write_ivar, nexus_write_ivar),
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129 DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
130 DEVMETHOD(bus_release_resource, nexus_release_resource),
131 DEVMETHOD(bus_activate_resource, nexus_activate_resource),
132 DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
bef055ab 133 DEVMETHOD(bus_config_intr, nexus_config_intr),
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134 DEVMETHOD(bus_setup_intr, nexus_setup_intr),
135 DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
136 DEVMETHOD(bus_set_resource, nexus_set_resource),
137 DEVMETHOD(bus_get_resource, nexus_get_resource),
138 DEVMETHOD(bus_delete_resource, nexus_delete_resource),
139
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140 DEVMETHOD(pcib_alloc_msi, nexus_alloc_msi),
141 DEVMETHOD(pcib_release_msi, nexus_release_msi),
142 DEVMETHOD(pcib_map_msi, nexus_map_msi),
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143 DEVMETHOD(pcib_alloc_msix, nexus_alloc_msix),
144 DEVMETHOD(pcib_release_msix, nexus_release_msix),
be98308a 145
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146 { 0, 0 }
147};
148
149static driver_t nexus_driver = {
150 "nexus",
151 nexus_methods,
152 1, /* no softc */
153};
154static devclass_t nexus_devclass;
155
aa2b9d05 156DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, NULL, NULL);
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157
158static int
159nexus_probe(device_t dev)
160{
cc506d27 161 int cpuid;
984263bc 162
cc506d27 163 device_quiet(dev); /* suppress attach message for neatness */
30c5f287 164
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165 for (cpuid = 0; cpuid < ncpus; ++cpuid) {
166 struct rman *rm = &irq_rman[cpuid];
167
cc506d27 168 rm->rm_start = 0;
14bd3265 169 rm->rm_end = IDT_HWI_VECTORS - 1;
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170 rm->rm_type = RMAN_ARRAY;
171 rm->rm_descr = "Interrupt request lines";
172
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173 if (rman_init(rm, cpuid))
174 panic("nexus_probe rman_init");
175 MachIntrABI.rman_setup(rm);
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176 }
177
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178 /*
179 * ISA DMA on PCI systems is implemented in the ISA part of each
180 * PCI->ISA bridge and the channels can be duplicated if there are
181 * multiple bridges. (eg: laptops with docking stations)
182 */
183 drq_rman.rm_start = 0;
984263bc 184 drq_rman.rm_end = 7;
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185 drq_rman.rm_type = RMAN_ARRAY;
186 drq_rman.rm_descr = "DMA request lines";
187 /* XXX drq 0 not available on some machines */
65cd6ac8 188 if (rman_init(&drq_rman, -1)
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189 || rman_manage_region(&drq_rman,
190 drq_rman.rm_start, drq_rman.rm_end))
191 panic("nexus_probe drq_rman");
192
193 /*
194 * However, IO ports and Memory truely are global at this level,
195 * as are APIC interrupts (however many IO APICS there turn out
196 * to be on large systems..)
197 */
198 port_rman.rm_start = 0;
199 port_rman.rm_end = 0xffff;
200 port_rman.rm_type = RMAN_ARRAY;
201 port_rman.rm_descr = "I/O ports";
65cd6ac8 202 if (rman_init(&port_rman, -1)
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203 || rman_manage_region(&port_rman, 0, 0xffff))
204 panic("nexus_probe port_rman");
205
206 mem_rman.rm_start = 0;
207 mem_rman.rm_end = ~0u;
208 mem_rman.rm_type = RMAN_ARRAY;
209 mem_rman.rm_descr = "I/O memory addresses";
65cd6ac8 210 if (rman_init(&mem_rman, -1)
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211 || rman_manage_region(&mem_rman, 0, ~0))
212 panic("nexus_probe mem_rman");
213
214 return bus_generic_probe(dev);
215}
216
217static int
218nexus_attach(device_t dev)
219{
220 device_t child;
221
222 /*
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223 * First, let our child driver's identify any child devices that
224 * they can find. Once that is done attach any devices that we
225 * found.
984263bc 226 */
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227#if 0 /* FUTURE */
228 bus_generic_probe(dev);
229#endif
984263bc 230 bus_generic_attach(dev);
41a01a4d 231
984263bc 232 /*
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233 * And if we didn't see ISA on a pci bridge, create a
234 * connection point now so it shows up "on motherboard".
984263bc 235 */
984263bc 236 if (!devclass_get_device(devclass_find("isa"), 0)) {
2581072f 237 child = BUS_ADD_CHILD(dev, dev, 0, "isa", 0);
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238 if (child == NULL)
239 panic("nexus_attach isa");
240 device_probe_and_attach(child);
241 }
242
243 return 0;
244}
245
246static int
247nexus_print_all_resources(device_t dev)
248{
249 struct nexus_device *ndev = DEVTONX(dev);
250 struct resource_list *rl = &ndev->nx_resources;
251 int retval = 0;
252
2899c8b1 253 if (SLIST_FIRST(rl) || ndev->nx_pcibus != -1)
26be20a0 254 retval += kprintf(" at");
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255
256 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
257 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
258 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
259
260 return retval;
261}
262
263static int
264nexus_print_child(device_t bus, device_t child)
265{
2899c8b1 266 struct nexus_device *ndev = DEVTONX(child);
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267 int retval = 0;
268
269 retval += bus_print_child_header(bus, child);
270 retval += nexus_print_all_resources(child);
2899c8b1 271 if (ndev->nx_pcibus != -1)
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272 retval += kprintf(" pcibus %d", ndev->nx_pcibus);
273 retval += kprintf(" on motherboard\n");
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274
275 return (retval);
276}
277
278static device_t
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279nexus_add_child(device_t bus, device_t parent, int order,
280 const char *name, int unit)
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281{
282 device_t child;
283 struct nexus_device *ndev;
284
efda3bd0 285 ndev = kmalloc(sizeof(struct nexus_device), M_NEXUSDEV, M_INTWAIT|M_ZERO);
984263bc 286 resource_list_init(&ndev->nx_resources);
2899c8b1 287 ndev->nx_pcibus = -1;
984263bc 288
2581072f 289 child = device_add_child_ordered(parent, order, name, unit);
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290
291 /* should we free this in nexus_child_detached? */
292 device_set_ivars(child, ndev);
293
294 return(child);
295}
296
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297static int
298nexus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
299{
300 struct nexus_device *ndev = DEVTONX(child);
301
302 switch (which) {
303 case NEXUS_IVAR_PCIBUS:
304 *result = ndev->nx_pcibus;
305 break;
306 default:
307 return ENOENT;
308 }
309 return 0;
310}
311
312static int
313nexus_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
314{
315 struct nexus_device *ndev = DEVTONX(child);
316
317 switch (which) {
318 case NEXUS_IVAR_PCIBUS:
319 ndev->nx_pcibus = value;
320 break;
321 default:
322 return ENOENT;
323 }
324 return 0;
325}
326
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327/*
328 * Allocate a resource on behalf of child. NB: child is usually going to be a
329 * child of one of our descendants, not a direct child of nexus0.
330 * (Exceptions include npx.)
331 */
332static struct resource *
333nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
4f7fe8c7 334 u_long start, u_long end, u_long count, u_int flags, int cpuid)
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335{
336 struct nexus_device *ndev = DEVTONX(child);
337 struct resource *rv;
338 struct resource_list_entry *rle;
339 struct rman *rm;
340 int needactivate = flags & RF_ACTIVE;
341
342 /*
343 * If this is an allocation of the "default" range for a given RID, and
344 * we know what the resources for this device are (ie. they aren't maintained
345 * by a child bus), then work out the start/end values.
346 */
347 if ((start == 0UL) && (end == ~0UL) && (count == 1)) {
348 if (ndev == NULL)
349 return(NULL);
350 rle = resource_list_find(&ndev->nx_resources, type, *rid);
351 if (rle == NULL)
352 return(NULL);
353 start = rle->start;
354 end = rle->end;
355 count = rle->count;
4f7fe8c7 356 cpuid = rle->cpuid;
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357 }
358
359 flags &= ~RF_ACTIVE;
360
361 switch (type) {
362 case SYS_RES_IRQ:
0f58fbd9 363 KASSERT(cpuid >= 0 && cpuid < ncpus,
ed20d0e3 364 ("nexus invalid cpuid: %d", cpuid));
cc506d27 365 rm = &irq_rman[cpuid];
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366 break;
367
368 case SYS_RES_DRQ:
369 rm = &drq_rman;
370 break;
371
372 case SYS_RES_IOPORT:
373 rm = &port_rman;
374 break;
375
376 case SYS_RES_MEMORY:
377 rm = &mem_rman;
378 break;
379
380 default:
381 return 0;
382 }
383
384 rv = rman_reserve_resource(rm, start, end, count, flags, child);
4090d6ff 385 if (rv == NULL)
984263bc 386 return 0;
a4e4d72f 387 rman_set_rid(rv, *rid);
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388
389 if (type == SYS_RES_MEMORY) {
390 rman_set_bustag(rv, I386_BUS_SPACE_MEM);
391 } else if (type == SYS_RES_IOPORT) {
392 rman_set_bustag(rv, I386_BUS_SPACE_IO);
984263bc 393 rman_set_bushandle(rv, rv->r_start);
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394 }
395
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396 if (needactivate) {
397 if (bus_activate_resource(child, type, *rid, rv)) {
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398 rman_release_resource(rv);
399 return 0;
400 }
401 }
402
403 return rv;
404}
405
406static int
407nexus_activate_resource(device_t bus, device_t child, int type, int rid,
408 struct resource *r)
409{
410 /*
411 * If this is a memory resource, map it into the kernel.
412 */
413 if (rman_get_bustag(r) == I386_BUS_SPACE_MEM) {
414 caddr_t vaddr = 0;
415
778931ae 416 if (rman_get_end(r) < 1024 * 1024) {
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417 /*
418 * The first 1Mb is mapped at KERNBASE.
419 */
778931ae 420 vaddr = (caddr_t)(uintptr_t)(KERNBASE + rman_get_start(r));
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421 } else {
422 u_int32_t paddr;
423 u_int32_t psize;
424 u_int32_t poffs;
425
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426 paddr = rman_get_start(r);
427 psize = rman_get_size(r);
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428
429 poffs = paddr - trunc_page(paddr);
430 vaddr = (caddr_t) pmap_mapdev(paddr-poffs, psize+poffs) + poffs;
431 }
432 rman_set_virtual(r, vaddr);
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433 /* IBM-PC: the type of bus_space_handle_t is u_int */
434 rman_set_bushandle(r, (bus_space_handle_t) vaddr);
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435 }
436 return (rman_activate_resource(r));
437}
438
439static int
440nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
441 struct resource *r)
442{
443 /*
444 * If this is a memory resource, unmap it.
445 */
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446 if ((rman_get_bustag(r) == I386_BUS_SPACE_MEM) &&
447 (rman_get_end(r) >= 1024 * 1024)) {
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448 u_int32_t psize;
449
778931ae 450 psize = rman_get_size(r);
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451 pmap_unmapdev((vm_offset_t)rman_get_virtual(r), psize);
452 }
453
454 return (rman_deactivate_resource(r));
455}
456
457static int
458nexus_release_resource(device_t bus, device_t child, int type, int rid,
459 struct resource *r)
460{
778931ae 461 if (rman_get_flags(r) & RF_ACTIVE) {
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462 int error = bus_deactivate_resource(child, type, rid, r);
463 if (error)
464 return error;
465 }
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466 return (rman_release_resource(r));
467}
468
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469static int
470nexus_config_intr(device_t bus, device_t chile, int irq,
471 enum intr_trigger trig, enum intr_polarity pola)
472{
bec969af 473 machintr_legacy_intr_config(irq, trig, pola);
bef055ab
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474 return 0;
475}
476
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477/*
478 * Currently this uses the really grody interface from kern/kern_intr.c
479 * (which really doesn't belong in kern/anything.c). Eventually, all of
480 * the code in kern_intr.c and machdep_intr.c should get moved here, since
481 * this is going to be the official interface.
482 */
483static int
484nexus_setup_intr(device_t bus, device_t child, struct resource *irq,
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485 int flags, void (*ihand)(void *), void *arg, void **cookiep,
486 lwkt_serialize_t serializer, const char *desc)
984263bc 487{
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488 int error, icflags;
489
490 /* somebody tried to setup an irq that failed to allocate! */
491 if (irq == NULL)
492 panic("nexus_setup_intr: NULL irq resource!");
493
4090d6ff 494 *cookiep = NULL;
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495 icflags = flags;
496 if ((irq->r_flags & RF_SHAREABLE) == 0)
497 icflags |= INTR_EXCL;
984263bc 498
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499 /*
500 * We depend here on rman_activate_resource() being idempotent.
501 */
502 error = rman_activate_resource(irq);
503 if (error)
504 return (error);
505
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506 /* Use device name, if description is not specified */
507 if (desc == NULL)
508 desc = device_get_nameunit(child);
509
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510 /*
511 * XXX cast the interrupt handler function to an inthand2_t. The
512 * difference is that an additional frame argument is passed which
513 * we do not currently want to expose the BUS subsystem to.
514 */
9d522d14 515 *cookiep = register_int(irq->r_start, (inthand2_t *)ihand, arg,
0e6f0e28 516 desc, serializer, icflags, rman_get_cpuid(irq));
984263bc 517 if (*cookiep == NULL)
9d522d14 518 error = EINVAL;
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519 return (error);
520}
521
522static int
523nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih)
524{
9d522d14 525 if (ih) {
6355d931 526 unregister_int(ih, rman_get_cpuid(r));
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527 return (0);
528 }
529 return(-1);
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530}
531
532static int
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533nexus_set_resource(device_t dev, device_t child, int type, int rid,
534 u_long start, u_long count, int cpuid)
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535{
536 struct nexus_device *ndev = DEVTONX(child);
537 struct resource_list *rl = &ndev->nx_resources;
538
539 /* XXX this should return a success/failure indicator */
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540 resource_list_add(rl, type, rid, start, start + count - 1, count,
541 cpuid);
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542 return(0);
543}
544
545static int
546nexus_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp)
547{
548 struct nexus_device *ndev = DEVTONX(child);
549 struct resource_list *rl = &ndev->nx_resources;
550 struct resource_list_entry *rle;
551
552 rle = resource_list_find(rl, type, rid);
553 device_printf(child, "type %d rid %d startp %p countp %p - got %p\n",
554 type, rid, startp, countp, rle);
555 if (!rle)
556 return(ENOENT);
557 if (startp)
558 *startp = rle->start;
559 if (countp)
560 *countp = rle->count;
561 return(0);
562}
563
564static void
565nexus_delete_resource(device_t dev, device_t child, int type, int rid)
566{
567 struct nexus_device *ndev = DEVTONX(child);
568 struct resource_list *rl = &ndev->nx_resources;
569
570 resource_list_delete(rl, type, rid);
571}
9713df24 572
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573static int
574nexus_alloc_msi(device_t dev, device_t child, int count, int maxcount,
575 int *irqs, int cpuid)
576{
577 if (!lapic_enable)
578 return ENODEV;
579
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580 return MachIntrABI.msi_alloc(irqs, count, cpuid);
581}
582
583static int
584nexus_release_msi(device_t dev, device_t child, int count, int *irqs, int cpuid)
585{
586 KKASSERT(lapic_enable);
587 MachIntrABI.msi_release(irqs, count, cpuid);
588 return 0;
589}
590
591static int
592nexus_map_msi(device_t dev, device_t child, int irq, uint64_t *addr,
593 uint32_t *data, int cpuid)
594{
595 KKASSERT(lapic_enable);
596 MachIntrABI.msi_map(irq, addr, data, cpuid);
597 return 0;
598}
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599
600static int
601nexus_alloc_msix(device_t dev, device_t child, int *irq, int cpuid)
602{
603 if (!lapic_enable)
604 return ENODEV;
605
606 return MachIntrABI.msix_alloc(irq, cpuid);
607}
608
609static int
610nexus_release_msix(device_t dev, device_t child, int irq, int cpuid)
611{
612 KKASSERT(lapic_enable);
613 MachIntrABI.msix_release(irq, cpuid);
614 return 0;
615}