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Do a major clean-up of the BUSDMA architecture. A large number of
[dfdiff.git] / sys / bus / eisa / eisaconf.c
blobc51805e8258223b4a5e6ae1e47382b1d6b979ea1
1 /*
2 * EISA bus probe and attach routines
3 *
4 * Copyright (c) 1995, 1996 Justin T. Gibbs.
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 * 1. Redistributions of source code must retain the above copyright
11 * notice immediately at the beginning of the file, without modification,
12 * 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. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD: src/sys/dev/eisa/eisaconf.c,v 1.55 2000/01/14 07:13:57 peter Exp $
32 * $DragonFly: src/sys/bus/eisa/eisaconf.c,v 1.9 2006/10/25 20:55:51 dillon Exp $
33 */
34
35 #include "opt_eisa.h"
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/queue.h>
40 #include <sys/malloc.h>
41 #include <sys/kernel.h>
42 #include <sys/module.h>
43 #include <sys/bus.h>
44
45 #include <machine/limits.h>
46 #include <sys/rman.h>
47
48 #include "eisaconf.h"
49
50 typedef struct resvaddr {
51 u_long addr; /* start address */
52 u_long size; /* size of reserved area */
53 int flags;
54 struct resource *res; /* resource manager handle */
55 LIST_ENTRY(resvaddr) links; /* List links */
56 } resvaddr_t;
57
58 LIST_HEAD(resvlist, resvaddr);
59
60 struct irq_node {
61 int irq_no;
62 int irq_trigger;
63 void *idesc;
64 TAILQ_ENTRY(irq_node) links;
65 };
66
67 TAILQ_HEAD(irqlist, irq_node);
68
69 struct eisa_ioconf {
70 int slot;
71 struct resvlist ioaddrs; /* list of reserved I/O ranges */
72 struct resvlist maddrs; /* list of reserved memory ranges */
73 struct irqlist irqs; /* list of reserved irqs */
74 };
75
76 /* To be replaced by the "super device" generic device structure... */
77 struct eisa_device {
78 eisa_id_t id;
79 struct eisa_ioconf ioconf;
80 };
81
82
83 /* Global variable, so UserConfig can change it. */
84 #define MAX_COL 79
85 #ifndef EISA_SLOTS
86 #define EISA_SLOTS 10 /* PCI clashes with higher ones.. fix later */
87 #endif
88 int num_eisa_slots = EISA_SLOTS;
89
90 static devclass_t eisa_devclass;
91
92 static void eisa_reg_print(device_t, char *, char *, int *);
93 static struct irq_node * eisa_find_irq(struct eisa_device *e_dev, int rid);
94 static struct resvaddr * eisa_find_maddr(struct eisa_device *e_dev, int rid);
95 static struct resvaddr * eisa_find_ioaddr(struct eisa_device *e_dev, int rid);
96
97 static int
98 mainboard_probe(device_t dev)
99 {
100 char *idstring;
101 eisa_id_t id = eisa_get_id(dev);
102
103 if (eisa_get_slot(dev) != 0)
104 return (ENXIO);
105
106 idstring = kmalloc(8 + sizeof(" (System Board)") + 1,
107 M_DEVBUF, M_INTWAIT);
108 sprintf(idstring, "%c%c%c%03x%01x (System Board)",
109 EISA_MFCTR_CHAR0(id),
110 EISA_MFCTR_CHAR1(id),
111 EISA_MFCTR_CHAR2(id),
112 EISA_PRODUCT_ID(id),
113 EISA_REVISION_ID(id));
114 device_set_desc(dev, idstring);
115
116 return (0);
117 }
118
119 static int
120 mainboard_attach(device_t dev)
121 {
122 return (0);
123 }
124
125 static device_method_t mainboard_methods[] = {
126 /* Device interface */
127 DEVMETHOD(device_probe, mainboard_probe),
128 DEVMETHOD(device_attach, mainboard_attach),
129
130 { 0, 0 }
131 };
132
133 static driver_t mainboard_driver = {
134 "mainboard",
135 mainboard_methods,
136 1,
137 };
138
139 static devclass_t mainboard_devclass;
140
141 DRIVER_MODULE(mainboard, eisa, mainboard_driver, mainboard_devclass, 0, 0);
142
143 /*
144 ** probe for EISA devices
145 */
146 static int
147 eisa_probe(device_t dev)
148 {
149 int i,slot;
150 struct eisa_device *e_dev;
151 device_t child;
152 int eisaBase = 0xc80;
153 eisa_id_t eisa_id;
154 int devices_found = 0;
155
156 device_set_desc(dev, "EISA bus");
157
158 for (slot = 0; slot < num_eisa_slots; eisaBase+=0x1000, slot++) {
159 int id_size = sizeof(eisa_id);
160 eisa_id = 0;
161 for( i = 0; i < id_size; i++ ) {
162 outb(eisaBase,0x80 + i); /*Some cards require priming*/
163 eisa_id |= inb(eisaBase+i) << ((id_size-i-1)*CHAR_BIT);
164 }
165 if (eisa_id & 0x80000000) {
166 if (slot == 0)
167 break;
168 continue; /* no EISA card in slot */
169 }
170
171 devices_found++;
172
173 /* Prepare an eisa_device_node for this slot */
174 e_dev = kmalloc(sizeof(*e_dev), M_DEVBUF, M_INTWAIT | M_ZERO);
175
176 e_dev->id = eisa_id;
177 e_dev->ioconf.slot = slot;
178
179 /* Initialize our lists of reserved addresses */
180 LIST_INIT(&(e_dev->ioconf.ioaddrs));
181 LIST_INIT(&(e_dev->ioconf.maddrs));
182 TAILQ_INIT(&(e_dev->ioconf.irqs));
183
184 child = device_add_child(dev, NULL, -1);
185 device_set_ivars(child, e_dev);
186 }
187
188 /*
189 * EISA busses themselves are not easily detectable, the easiest way
190 * to tell if there is an eisa bus is if we found something - there
191 * should be a motherboard "card" there somewhere.
192 */
193 return devices_found ? 0 : ENXIO;
194 }
195
196 static void
197 eisa_probe_nomatch(device_t dev, device_t child)
198 {
199 u_int32_t eisa_id = eisa_get_id(child);
200 u_int8_t slot = eisa_get_slot(child);
201
202 device_printf(dev, "unknown card %c%c%c%03x%01x (0x%08x) at slot %d\n",
203 EISA_MFCTR_CHAR0(eisa_id),
204 EISA_MFCTR_CHAR1(eisa_id),
205 EISA_MFCTR_CHAR2(eisa_id),
206 EISA_PRODUCT_ID(eisa_id),
207 EISA_REVISION_ID(eisa_id),
208 eisa_id,
209 slot);
210
211 return;
212 }
213
214 static void
215 eisa_reg_print(device_t dev, char *string, char *separator, int *column)
216 {
217 int length = strlen(string);
218
219 length += (separator ? 2 : 1);
220
221 if (((*column) + length) >= MAX_COL) {
222 printf("\n");
223 (*column) = 0;
224 } else if ((*column) != 0) {
225 if (separator) {
226 printf("%c", *separator);
227 (*column)++;
228 }
229 printf(" ");
230 (*column)++;
231 }
232
233 if ((*column) == 0) {
234 (*column) += device_printf(dev, "%s", string);
235 } else {
236 (*column) += printf("%s", string);
237 }
238
239 return;
240 }
241
242 static int
243 eisa_print_child(device_t dev, device_t child)
244 {
245 char buf[81];
246 struct eisa_device * e_dev = device_get_ivars(child);
247 int rid;
248 struct irq_node * irq;
249 struct resvaddr * resv;
250 char separator = ',';
251 int column = 0;
252 int retval = 0;
253
254 if (device_get_desc(child)) {
255 snprintf(buf, sizeof(buf), "<%s>", device_get_desc(child));
256 eisa_reg_print(child, buf, NULL, &column);
257 }
258
259 rid = 0;
260 while ((resv = eisa_find_ioaddr(e_dev, rid++))) {
261 if ((resv->size == 1) ||
262 (resv->flags & RESVADDR_BITMASK)) {
263 snprintf(buf, sizeof(buf), "%s%lx",
264 ((rid == 1) ? "at 0x" : "0x"),
265 resv->addr);
266 } else {
267 snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
268 ((rid == 1) ? "at 0x" : "0x"),
269 resv->addr,
270 (resv->addr + (resv->size - 1)));
271 }
272 eisa_reg_print(child, buf,
273 ((rid == 2) ? &separator : NULL), &column);
274 }
275
276 rid = 0;
277 while ((resv = eisa_find_maddr(e_dev, rid++))) {
278 if ((resv->size == 1) ||
279 (resv->flags & RESVADDR_BITMASK)) {
280 snprintf(buf, sizeof(buf), "%s%lx",
281 ((rid == 1) ? "at 0x" : "0x"),
282 resv->addr);
283 } else {
284 snprintf(buf, sizeof(buf), "%s%lx-0x%lx",
285 ((rid == 1) ? "at 0x" : "0x"),
286 resv->addr,
287 (resv->addr + (resv->size - 1)));
288 }
289 eisa_reg_print(child, buf,
290 ((rid == 2) ? &separator : NULL), &column);
291 }
292
293 rid = 0;
294 while ((irq = eisa_find_irq(e_dev, rid++)) != NULL) {
295 snprintf(buf, sizeof(buf), "irq %d (%s)", irq->irq_no,
296 (irq->irq_trigger ? "level" : "edge"));
297 eisa_reg_print(child, buf,
298 ((rid == 1) ? &separator : NULL), &column);
299 }
300
301 snprintf(buf, sizeof(buf), "on %s slot %d\n",
302 device_get_nameunit(dev), eisa_get_slot(child));
303 eisa_reg_print(child, buf, NULL, &column);
304
305 return (retval);
306 }
307
308 static struct irq_node *
309 eisa_find_irq(struct eisa_device *e_dev, int rid)
310 {
311 int i;
312 struct irq_node *irq;
313
314 for (i = 0, irq = TAILQ_FIRST(&e_dev->ioconf.irqs);
315 i < rid && irq;
316 i++, irq = TAILQ_NEXT(irq, links))
317 ;
318
319 if (irq)
320 return (irq);
321 else
322 return (NULL);
323 }
324
325 static struct resvaddr *
326 eisa_find_maddr(struct eisa_device *e_dev, int rid)
327 {
328 int i;
329 struct resvaddr *resv;
330
331 for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.maddrs);
332 i < rid && resv;
333 i++, resv = LIST_NEXT(resv, links))
334 ;
335
336 return resv;
337 }
338
339 static struct resvaddr *
340 eisa_find_ioaddr(struct eisa_device *e_dev, int rid)
341 {
342 int i;
343 struct resvaddr *resv;
344
345 for (i = 0, resv = LIST_FIRST(&e_dev->ioconf.ioaddrs);
346 i < rid && resv;
347 i++, resv = LIST_NEXT(resv, links))
348 ;
349
350 return resv;
351 }
352
353 static int
354 eisa_read_ivar(device_t dev, device_t child, int which, u_long *result)
355 {
356 struct eisa_device *e_dev = device_get_ivars(child);
357 struct irq_node *irq;
358
359 switch (which) {
360 case EISA_IVAR_SLOT:
361 *result = e_dev->ioconf.slot;
362 break;
363
364 case EISA_IVAR_ID:
365 *result = e_dev->id;
366 break;
367
368 case EISA_IVAR_IRQ:
369 /* XXX only first irq */
370 if ((irq = eisa_find_irq(e_dev, 0)) != NULL) {
371 *result = irq->irq_no;
372 } else {
373 *result = -1;
374 }
375 break;
376
377 default:
378 return (ENOENT);
379 }
380
381 return (0);
382 }
383
384 static int
385 eisa_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
386 {
387 return (EINVAL);
388 }
389
390 static struct resource *
391 eisa_alloc_resource(device_t dev, device_t child, int type, int *rid,
392 u_long start, u_long end, u_long count, u_int flags)
393 {
394 int isdefault;
395 struct eisa_device *e_dev = device_get_ivars(child);
396 struct resource *rv, **rvp = 0;
397
398 isdefault = (device_get_parent(child) == dev
399 && start == 0UL && end == ~0UL && count == 1);
400
401 switch (type) {
402 case SYS_RES_IRQ:
403 if (isdefault) {
404 struct irq_node * irq = eisa_find_irq(e_dev, *rid);
405 if (irq == NULL)
406 return 0;
407 start = end = irq->irq_no;
408 count = 1;
409 if (irq->irq_trigger == EISA_TRIGGER_LEVEL) {
410 flags |= RF_SHAREABLE;
411 } else {
412 flags &= ~RF_SHAREABLE;
413 }
414 }
415 break;
416
417 case SYS_RES_MEMORY:
418 if (isdefault) {
419 struct resvaddr *resv;
420
421 resv = eisa_find_maddr(e_dev, *rid);
422 if (!resv)
423 return 0;
424
425 start = resv->addr;
426 end = resv->addr + (resv->size - 1);
427 count = resv->size;
428 rvp = &resv->res;
429 }
430 break;
431
432 case SYS_RES_IOPORT:
433 if (isdefault) {
434 struct resvaddr *resv;
435
436 resv = eisa_find_ioaddr(e_dev, *rid);
437 if (!resv)
438 return 0;
439
440 start = resv->addr;
441 end = resv->addr + (resv->size - 1);
442 count = resv->size;
443 rvp = &resv->res;
444 }
445 break;
446
447 default:
448 return 0;
449 }
450
451 rv = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
452 type, rid, start, end, count, flags);
453 if (rvp)
454 *rvp = rv;
455
456 return rv;
457 }
458
459 static int
460 eisa_release_resource(device_t dev, device_t child, int type, int rid,
461 struct resource *r)
462 {
463 int rv;
464 struct eisa_device *e_dev = device_get_ivars(child);
465 struct resvaddr *resv = 0;
466
467 switch (type) {
468 case SYS_RES_IRQ:
469 if (eisa_find_irq(e_dev, rid) == NULL)
470 return EINVAL;
471 break;
472
473 case SYS_RES_MEMORY:
474 if (device_get_parent(child) == dev)
475 resv = eisa_find_maddr(e_dev, rid);
476 break;
477
478
479 case SYS_RES_IOPORT:
480 if (device_get_parent(child) == dev)
481 resv = eisa_find_ioaddr(e_dev, rid);
482 break;
483
484 default:
485 return (ENOENT);
486 }
487
488 rv = BUS_RELEASE_RESOURCE(device_get_parent(dev), child, type, rid, r);
489
490 if (rv == 0) {
491 if (resv)
492 resv->res = 0;
493 }
494
495 return rv;
496 }
497
498 int
499 eisa_add_intr(device_t dev, int irq, int trigger)
500 {
501 struct eisa_device *e_dev = device_get_ivars(dev);
502 struct irq_node *irq_info;
503
504 irq_info = kmalloc(sizeof(*irq_info), M_DEVBUF, M_INTWAIT);
505 irq_info->irq_no = irq;
506 irq_info->irq_trigger = trigger;
507 irq_info->idesc = NULL;
508 TAILQ_INSERT_TAIL(&e_dev->ioconf.irqs, irq_info, links);
509 return 0;
510 }
511
512 static int
513 eisa_add_resvaddr(struct eisa_device *e_dev, struct resvlist *head, u_long base,
514 u_long size, int flags)
515 {
516 resvaddr_t *reservation;
517
518 reservation = kmalloc(sizeof(resvaddr_t), M_DEVBUF, M_INTWAIT);
519 reservation->addr = base;
520 reservation->size = size;
521 reservation->flags = flags;
522
523 if (!head->lh_first) {
524 LIST_INSERT_HEAD(head, reservation, links);
525 }
526 else {
527 resvaddr_t *node;
528 for(node = head->lh_first; node; node = node->links.le_next) {
529 if (node->addr > reservation->addr) {
530 /*
531 * List is sorted in increasing
532 * address order.
533 */
534 LIST_INSERT_BEFORE(node, reservation, links);
535 break;
536 }
537
538 if (node->addr == reservation->addr) {
539 /*
540 * If the entry we want to add
541 * matches any already in here,
542 * fail.
543 */
544 kfree(reservation, M_DEVBUF);
545 return (EEXIST);
546 }
547
548 if (!node->links.le_next) {
549 LIST_INSERT_AFTER(node, reservation, links);
550 break;
551 }
552 }
553 }
554 return (0);
555 }
556
557 int
558 eisa_add_mspace(device_t dev, u_long mbase, u_long msize, int flags)
559 {
560 struct eisa_device *e_dev = device_get_ivars(dev);
561
562 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.maddrs), mbase, msize,
563 flags);
564 }
565
566 int
567 eisa_add_iospace(device_t dev, u_long iobase, u_long iosize, int flags)
568 {
569 struct eisa_device *e_dev = device_get_ivars(dev);
570
571 return eisa_add_resvaddr(e_dev, &(e_dev->ioconf.ioaddrs), iobase,
572 iosize, flags);
573 }
574
575 static device_method_t eisa_methods[] = {
576 /* Device interface */
577 DEVMETHOD(device_probe, eisa_probe),
578 DEVMETHOD(device_attach, bus_generic_attach),
579 DEVMETHOD(device_shutdown, bus_generic_shutdown),
580 DEVMETHOD(device_suspend, bus_generic_suspend),
581 DEVMETHOD(device_resume, bus_generic_resume),
582
583 /* Bus interface */
584 DEVMETHOD(bus_print_child, eisa_print_child),
585 DEVMETHOD(bus_probe_nomatch, eisa_probe_nomatch),
586 DEVMETHOD(bus_read_ivar, eisa_read_ivar),
587 DEVMETHOD(bus_write_ivar, eisa_write_ivar),
588 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
589 DEVMETHOD(bus_alloc_resource, eisa_alloc_resource),
590 DEVMETHOD(bus_release_resource, eisa_release_resource),
591 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
592 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
593 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
594 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
595
596 { 0, 0 }
597 };
598
599 static driver_t eisa_driver = {
600 "eisa",
601 eisa_methods,
602 1, /* no softc */
603 };
604
605 DRIVER_MODULE(eisa, isab, eisa_driver, eisa_devclass, 0, 0);
606 DRIVER_MODULE(eisa, nexus, eisa_driver, eisa_devclass, 0, 0);
Port diff from OpenBSD to DragonFly