AMD64 - Fix many compile-time warnings. int/ptr type mismatches, %llx, etc.
[dragonfly.git] / sys / platform / pc64 / amd64 / nexus.c
CommitLineData
c8fe38ae
MD
1/*
2 * Copyright 1998 Massachusetts Institute of Technology
3 * Copyright (c) 2008 The DragonFly Project.
4 *
5 * Permission to use, copy, modify, and distribute this software and
6 * its documentation for any purpose and without fee is hereby
7 * granted, provided that both the above copyright notice and this
8 * permission notice appear in all copies, that both the above
9 * copyright notice and this permission notice appear in all
10 * supporting documentation, and that the name of M.I.T. not be used
11 * in advertising or publicity pertaining to distribution of the
12 * software without specific, written prior permission. M.I.T. makes
13 * no representations about the suitability of this software for any
14 * purpose. It is provided "as is" without express or implied
15 * warranty.
16 *
17 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
18 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
21 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
24 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
27 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: src/sys/i386/i386/nexus.c,v 1.26.2.10 2003/02/22 13:16:45 imp Exp $
31 * $DragonFly: src/sys/platform/pc64/amd64/nexus.c,v 1.1 2008/08/29 17:07:10 dillon Exp $
32 */
33
34/*
35 * This code implements a `root nexus' for Intel Architecture
36 * machines. The function of the root nexus is to serve as an
37 * attachment point for both processors and buses, and to manage
38 * resources which are common to all of them. In particular,
39 * this code implements the core resource managers for interrupt
40 * requests, DMA requests (which rightfully should be a part of the
41 * ISA code but it's easier to do it here for now), I/O port addresses,
42 * and I/O memory address space.
43 */
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/bus.h>
48#include <sys/kernel.h>
49#include <sys/malloc.h>
50#include <sys/module.h>
51#include <sys/rman.h>
52
53#include <machine/vmparam.h>
54#include <vm/vm.h>
55#include <vm/pmap.h>
56#include <machine/pmap.h>
57
58#include <machine/nexusvar.h>
59#include <machine/smp.h>
60#include <machine_base/apic/mpapic.h>
61#include <machine_base/isa/intr_machdep.h>
62
63#define I386_BUS_SPACE_IO 0 /* space is i/o space */
64#define I386_BUS_SPACE_MEM 1 /* space is mem space */
65
66static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
67struct nexus_device {
68 struct resource_list nx_resources;
69 int nx_pcibus;
70};
71
72#define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
73
74static struct rman irq_rman, drq_rman, port_rman, mem_rman;
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);
80static device_t nexus_add_child(device_t bus, device_t parent, int order,
81 const char *name, int unit);
82static struct resource *nexus_alloc_resource(device_t, device_t, int, int *,
83 u_long, u_long, u_long, u_int);
84static int nexus_read_ivar(device_t, device_t, int, uintptr_t *);
85static int nexus_write_ivar(device_t, device_t, int, uintptr_t);
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 *);
92static int nexus_setup_intr(device_t, device_t, struct resource *, int flags,
93 void (*)(void *), void *,
94 void **, lwkt_serialize_t);
95static int nexus_teardown_intr(device_t, device_t, struct resource *,
96 void *);
97static int nexus_set_resource(device_t, device_t, int, int, u_long, u_long);
98static int nexus_get_resource(device_t, device_t, int, int, u_long *, u_long *);
99static void nexus_delete_resource(device_t, device_t, int, int);
100
101/*
102 * The device_identify method will cause nexus to automatically associate
103 * and attach to the root bus.
104 */
105static device_method_t nexus_methods[] = {
106 /* Device interface */
107 DEVMETHOD(device_identify, bus_generic_identify),
108 DEVMETHOD(device_probe, nexus_probe),
109 DEVMETHOD(device_attach, nexus_attach),
110 DEVMETHOD(device_detach, bus_generic_detach),
111 DEVMETHOD(device_shutdown, bus_generic_shutdown),
112 DEVMETHOD(device_suspend, bus_generic_suspend),
113 DEVMETHOD(device_resume, bus_generic_resume),
114
115 /* Bus interface */
116 DEVMETHOD(bus_print_child, nexus_print_child),
117 DEVMETHOD(bus_add_child, nexus_add_child),
118 DEVMETHOD(bus_read_ivar, nexus_read_ivar),
119 DEVMETHOD(bus_write_ivar, nexus_write_ivar),
120 DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
121 DEVMETHOD(bus_release_resource, nexus_release_resource),
122 DEVMETHOD(bus_activate_resource, nexus_activate_resource),
123 DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
124 DEVMETHOD(bus_setup_intr, nexus_setup_intr),
125 DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
126 DEVMETHOD(bus_set_resource, nexus_set_resource),
127 DEVMETHOD(bus_get_resource, nexus_get_resource),
128 DEVMETHOD(bus_delete_resource, nexus_delete_resource),
129
130 { 0, 0 }
131};
132
133static driver_t nexus_driver = {
134 "nexus",
135 nexus_methods,
136 1, /* no softc */
137};
138static devclass_t nexus_devclass;
139
140DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0);
141
142static int
143nexus_probe(device_t dev)
144{
145 device_quiet(dev); /* suppress attach message for neatness */
146
147 /*
148 * IRQ's are on the mainboard on old systems, but on the ISA part
149 * of PCI->ISA bridges. There would be multiple sets of IRQs on
150 * multi-ISA-bus systems. PCI interrupts are routed to the ISA
151 * component, so in a way, PCI can be a partial child of an ISA bus(!).
152 * APIC interrupts are global though.
153 * In the non-APIC case, disallow the use of IRQ 2.
154 */
155 irq_rman.rm_start = 0;
156 irq_rman.rm_type = RMAN_ARRAY;
157 irq_rman.rm_descr = "Interrupt request lines";
158#ifdef APIC_IO
159 irq_rman.rm_end = APIC_INTMAPSIZE - 1;
160 if (rman_init(&irq_rman)
161 || rman_manage_region(&irq_rman,
162 irq_rman.rm_start, irq_rman.rm_end))
163 panic("nexus_probe irq_rman");
164#else
165 irq_rman.rm_end = 15;
166 if (rman_init(&irq_rman)
167 || rman_manage_region(&irq_rman, irq_rman.rm_start, 1)
168 || rman_manage_region(&irq_rman, 3, irq_rman.rm_end))
169 panic("nexus_probe irq_rman");
170#endif
171
172 /*
173 * ISA DMA on PCI systems is implemented in the ISA part of each
174 * PCI->ISA bridge and the channels can be duplicated if there are
175 * multiple bridges. (eg: laptops with docking stations)
176 */
177 drq_rman.rm_start = 0;
178 drq_rman.rm_end = 7;
179 drq_rman.rm_type = RMAN_ARRAY;
180 drq_rman.rm_descr = "DMA request lines";
181 /* XXX drq 0 not available on some machines */
182 if (rman_init(&drq_rman)
183 || rman_manage_region(&drq_rman,
184 drq_rman.rm_start, drq_rman.rm_end))
185 panic("nexus_probe drq_rman");
186
187 /*
188 * However, IO ports and Memory truely are global at this level,
189 * as are APIC interrupts (however many IO APICS there turn out
190 * to be on large systems..)
191 */
192 port_rman.rm_start = 0;
193 port_rman.rm_end = 0xffff;
194 port_rman.rm_type = RMAN_ARRAY;
195 port_rman.rm_descr = "I/O ports";
196 if (rman_init(&port_rman)
197 || rman_manage_region(&port_rman, 0, 0xffff))
198 panic("nexus_probe port_rman");
199
200 mem_rman.rm_start = 0;
201 mem_rman.rm_end = ~0u;
202 mem_rman.rm_type = RMAN_ARRAY;
203 mem_rman.rm_descr = "I/O memory addresses";
204 if (rman_init(&mem_rman)
205 || rman_manage_region(&mem_rman, 0, ~0))
206 panic("nexus_probe mem_rman");
207
208 return bus_generic_probe(dev);
209}
210
211static int
212nexus_attach(device_t dev)
213{
214 device_t child;
215
216 /*
217 * First, let our child driver's identify any child devices that
218 * they can find. Once that is done attach any devices that we
219 * found.
220 */
221#if 0 /* FUTURE */
222 bus_generic_probe(dev);
223#endif
224 bus_generic_attach(dev);
225
226 /*
227 * And if we didn't see EISA or ISA on a pci bridge, create some
228 * connection points now so they show up "on motherboard".
229 */
230 if (!devclass_get_device(devclass_find("eisa"), 0)) {
231 child = BUS_ADD_CHILD(dev, dev, 0, "eisa", 0);
232 if (child == NULL)
233 panic("nexus_attach eisa");
234 device_probe_and_attach(child);
235 }
236 if (!devclass_get_device(devclass_find("isa"), 0)) {
237 child = BUS_ADD_CHILD(dev, dev, 0, "isa", 0);
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
253 if (SLIST_FIRST(rl) || ndev->nx_pcibus != -1)
254 retval += kprintf(" at");
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{
266 struct nexus_device *ndev = DEVTONX(child);
267 int retval = 0;
268
269 retval += bus_print_child_header(bus, child);
270 retval += nexus_print_all_resources(child);
271 if (ndev->nx_pcibus != -1)
272 retval += kprintf(" pcibus %d", ndev->nx_pcibus);
273 retval += kprintf(" on motherboard\n");
274
275 return (retval);
276}
277
278static device_t
279nexus_add_child(device_t bus, device_t parent, int order,
280 const char *name, int unit)
281{
282 device_t child;
283 struct nexus_device *ndev;
284
285 ndev = kmalloc(sizeof(struct nexus_device), M_NEXUSDEV, M_INTWAIT|M_ZERO);
286 if (!ndev)
287 return(0);
288 resource_list_init(&ndev->nx_resources);
289 ndev->nx_pcibus = -1;
290
291 child = device_add_child_ordered(parent, order, name, unit);
292
293 /* should we free this in nexus_child_detached? */
294 device_set_ivars(child, ndev);
295
296 return(child);
297}
298
299static int
300nexus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
301{
302 struct nexus_device *ndev = DEVTONX(child);
303
304 switch (which) {
305 case NEXUS_IVAR_PCIBUS:
306 *result = ndev->nx_pcibus;
307 break;
308 default:
309 return ENOENT;
310 }
311 return 0;
312}
313
314static int
315nexus_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
316{
317 struct nexus_device *ndev = DEVTONX(child);
318
319 switch (which) {
320 case NEXUS_IVAR_PCIBUS:
321 ndev->nx_pcibus = value;
322 break;
323 default:
324 return ENOENT;
325 }
326 return 0;
327}
328
329/*
330 * Allocate a resource on behalf of child. NB: child is usually going to be a
331 * child of one of our descendants, not a direct child of nexus0.
332 * (Exceptions include npx.)
333 */
334static struct resource *
335nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
336 u_long start, u_long end, u_long count, u_int flags)
337{
338 struct nexus_device *ndev = DEVTONX(child);
339 struct resource *rv;
340 struct resource_list_entry *rle;
341 struct rman *rm;
342 int needactivate = flags & RF_ACTIVE;
343
344 /*
345 * If this is an allocation of the "default" range for a given RID, and
346 * we know what the resources for this device are (ie. they aren't maintained
347 * by a child bus), then work out the start/end values.
348 */
349 if ((start == 0UL) && (end == ~0UL) && (count == 1)) {
350 if (ndev == NULL)
351 return(NULL);
352 rle = resource_list_find(&ndev->nx_resources, type, *rid);
353 if (rle == NULL)
354 return(NULL);
355 start = rle->start;
356 end = rle->end;
357 count = rle->count;
358 }
359
360 flags &= ~RF_ACTIVE;
361
362 switch (type) {
363 case SYS_RES_IRQ:
364 rm = &irq_rman;
365 break;
366
367 case SYS_RES_DRQ:
368 rm = &drq_rman;
369 break;
370
371 case SYS_RES_IOPORT:
372 rm = &port_rman;
373 break;
374
375 case SYS_RES_MEMORY:
376 rm = &mem_rman;
377 break;
378
379 default:
380 return 0;
381 }
382
383 rv = rman_reserve_resource(rm, start, end, count, flags, child);
384 if (rv == 0)
385 return 0;
386
387 if (type == SYS_RES_MEMORY) {
388 rman_set_bustag(rv, I386_BUS_SPACE_MEM);
389 } else if (type == SYS_RES_IOPORT) {
390 rman_set_bustag(rv, I386_BUS_SPACE_IO);
391 rman_set_bushandle(rv, rv->r_start);
392 }
393
394 if (needactivate) {
395 if (bus_activate_resource(child, type, *rid, rv)) {
396 rman_release_resource(rv);
397 return 0;
398 }
399 }
400
401 return rv;
402}
403
404static int
405nexus_activate_resource(device_t bus, device_t child, int type, int rid,
406 struct resource *r)
407{
408 /*
409 * If this is a memory resource, map it into the kernel.
410 */
411 if (rman_get_bustag(r) == I386_BUS_SPACE_MEM) {
412 caddr_t vaddr = 0;
413
414 if (rman_get_end(r) < 1024 * 1024) {
415 /*
416 * The first 1Mb is mapped at KERNBASE.
417 */
418 vaddr = (caddr_t)(uintptr_t)(KERNBASE + rman_get_start(r));
419 } else {
420 u_int64_t paddr;
421 u_int64_t psize;
422 u_int32_t poffs;
423
424 paddr = rman_get_start(r);
425 psize = rman_get_size(r);
426
427 poffs = paddr - trunc_page(paddr);
428 vaddr = (caddr_t) pmap_mapdev(paddr-poffs, psize+poffs) + poffs;
429 }
430 rman_set_virtual(r, vaddr);
431 /* IBM-PC: the type of bus_space_handle_t is u_int */
432 rman_set_bushandle(r, (bus_space_handle_t) vaddr);
433 }
434 return (rman_activate_resource(r));
435}
436
437static int
438nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
439 struct resource *r)
440{
441 /*
442 * If this is a memory resource, unmap it.
443 */
444 if ((rman_get_bustag(r) == I386_BUS_SPACE_MEM) &&
445 (rman_get_end(r) >= 1024 * 1024)) {
446 u_int32_t psize;
447
448 psize = rman_get_size(r);
449 pmap_unmapdev((vm_offset_t)rman_get_virtual(r), psize);
450 }
451
452 return (rman_deactivate_resource(r));
453}
454
455static int
456nexus_release_resource(device_t bus, device_t child, int type, int rid,
457 struct resource *r)
458{
459 if (rman_get_flags(r) & RF_ACTIVE) {
460 int error = bus_deactivate_resource(child, type, rid, r);
461 if (error)
462 return error;
463 }
464 return (rman_release_resource(r));
465}
466
467/*
468 * Currently this uses the really grody interface from kern/kern_intr.c
469 * (which really doesn't belong in kern/anything.c). Eventually, all of
470 * the code in kern_intr.c and machdep_intr.c should get moved here, since
471 * this is going to be the official interface.
472 */
473static int
474nexus_setup_intr(device_t bus, device_t child, struct resource *irq,
475 int flags, void (*ihand)(void *), void *arg,
476 void **cookiep, lwkt_serialize_t serializer)
477{
478 driver_t *driver;
479 int error, icflags;
480
481 /* somebody tried to setup an irq that failed to allocate! */
482 if (irq == NULL)
483 panic("nexus_setup_intr: NULL irq resource!");
484
485 *cookiep = 0;
486 icflags = flags;
487 if ((irq->r_flags & RF_SHAREABLE) == 0)
488 icflags |= INTR_EXCL;
489
490 driver = device_get_driver(child);
491
492 /*
493 * We depend here on rman_activate_resource() being idempotent.
494 */
495 error = rman_activate_resource(irq);
496 if (error)
497 return (error);
498
499 /*
500 * XXX cast the interrupt handler function to an inthand2_t. The
501 * difference is that an additional frame argument is passed which
502 * we do not currently want to expose the BUS subsystem to.
503 */
504 *cookiep = register_int(irq->r_start, (inthand2_t *)ihand, arg,
505 device_get_nameunit(child), serializer,
506 icflags);
507 if (*cookiep == NULL)
508 error = EINVAL;
509 return (error);
510}
511
512static int
513nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih)
514{
515 if (ih) {
516 unregister_int(ih);
517 return (0);
518 }
519 return(-1);
520}
521
522static int
523nexus_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count)
524{
525 struct nexus_device *ndev = DEVTONX(child);
526 struct resource_list *rl = &ndev->nx_resources;
527
528 /* XXX this should return a success/failure indicator */
529 resource_list_add(rl, type, rid, start, start + count - 1, count);
530 return(0);
531}
532
533static int
534nexus_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp)
535{
536 struct nexus_device *ndev = DEVTONX(child);
537 struct resource_list *rl = &ndev->nx_resources;
538 struct resource_list_entry *rle;
539
540 rle = resource_list_find(rl, type, rid);
541 device_printf(child, "type %d rid %d startp %p countp %p - got %p\n",
542 type, rid, startp, countp, rle);
543 if (!rle)
544 return(ENOENT);
545 if (startp)
546 *startp = rle->start;
547 if (countp)
548 *countp = rle->count;
549 return(0);
550}
551
552static void
553nexus_delete_resource(device_t dev, device_t child, int type, int rid)
554{
555 struct nexus_device *ndev = DEVTONX(child);
556 struct resource_list *rl = &ndev->nx_resources;
557
558 resource_list_delete(rl, type, rid);
559}
560
561/*
562 * Temporary Debugging
563 */
564
973c11b9 565static void PCHAR_(int, void * __unused);
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566
567int
568kprintf0(const char *fmt, ...)
569{
0855a2af 570 return 0;
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571 __va_list ap;
572 int retval;
573
574 __va_start(ap, fmt);
575 retval = kvcprintf(fmt, PCHAR_, NULL, 10, ap);
576 __va_end(ap);
577 return (retval);
578}
579
580static void
973c11b9 581PCHAR_(int c, void *dummy __unused)
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582{
583 const int COMC_TXWAIT = 0x40000;
584 const int COMPORT = 0x3f8;
585 const int LSR_TXRDY = 0x20;
586 const int com_lsr = 5;
587 const int com_data = 0;
588 int wait;
589
590 for (wait = COMC_TXWAIT; wait > 0; wait--) {
591 if (inb(COMPORT + com_lsr) & LSR_TXRDY) {
592 outb(COMPORT + com_data, (u_char)c);
593 break;
594 }
595 }
596}
597