2 * Copyright (c) 1999 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/isa/pnpparse.c,v 1.14 2003/06/11 00:32:45 obrien Exp $
27 * $DragonFly: src/sys/bus/isa/pnpparse.c,v 1.11 2008/07/21 23:42:02 swildner Exp $
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
36 #include <machine/stdarg.h>
44 #define I16(p) ((p)[0] + ((p)[1] << 8))
45 #define I32(p) (I16(p) + (I16((p)+2) << 16))
48 pnp_printf(u_int32_t id, char *fmt, ...)
53 kprintf("%s: ", pnp_eisaformat(id));
58 /* parse a single descriptor */
61 pnp_parse_desc(device_t dev, u_char tag, u_char *res, int len,
62 struct isa_config *config, int ldn)
69 id = isa_get_logicalid(dev);
71 if (PNP_RES_TYPE(tag) == 0) {
74 switch (PNP_SRES_NUM(tag)) {
78 /* these descriptors are quietly ignored */
81 case PNP_TAG_LOGICAL_DEVICE:
82 case PNP_TAG_START_DEPENDANT:
83 case PNP_TAG_END_DEPENDANT:
85 pnp_printf(id, "unexpected small tag %d\n",
87 /* shouldn't happen; quit now */
90 case PNP_TAG_COMPAT_DEVICE:
92 * Got a compatible device id resource.
93 * Should keep a list of compat ids in the device.
95 bcopy(res, &compat_id, 4);
96 if (isa_get_compatid(dev) == 0)
97 isa_set_compatid(dev, compat_id);
100 case PNP_TAG_IRQ_FORMAT:
101 if (config->ic_nirq == ISA_NIRQ) {
102 pnp_printf(id, "too many irqs\n");
106 /* a null descriptor */
107 config->ic_irqmask[config->ic_nirq] = 0;
112 pnp_printf(id, "adding irq mask %#02x\n",
114 config->ic_irqmask[config->ic_nirq] = I16(res);
118 case PNP_TAG_DMA_FORMAT:
119 if (config->ic_ndrq == ISA_NDRQ) {
120 pnp_printf(id, "too many drqs\n");
124 /* a null descriptor */
125 config->ic_drqmask[config->ic_ndrq] = 0;
130 pnp_printf(id, "adding dma mask %#02x\n",
132 config->ic_drqmask[config->ic_ndrq] = res[0];
136 case PNP_TAG_IO_RANGE:
137 if (config->ic_nport == ISA_NPORT) {
138 pnp_printf(id, "too many ports\n");
142 /* a null descriptor */
143 config->ic_port[config->ic_nport].ir_start = 0;
144 config->ic_port[config->ic_nport].ir_end = 0;
145 config->ic_port[config->ic_nport].ir_size = 0;
146 config->ic_port[config->ic_nport].ir_align = 0;
151 pnp_printf(id, "adding io range "
152 "%#x-%#x, size=%#x, "
155 I16(res + 3) + res[6]-1,
158 config->ic_port[config->ic_nport].ir_start =
160 config->ic_port[config->ic_nport].ir_end =
161 I16(res + 3) + res[6] - 1;
162 config->ic_port[config->ic_nport].ir_size = res[6];
164 /* Make sure align is at least one */
167 config->ic_port[config->ic_nport].ir_align = res[5];
169 pnp_check_quirks(isa_get_vendorid(dev),
170 isa_get_logicalid(dev), ldn, config);
173 case PNP_TAG_IO_FIXED:
174 if (config->ic_nport == ISA_NPORT) {
175 pnp_printf(id, "too many ports\n");
179 /* a null descriptor */
180 config->ic_port[config->ic_nport].ir_start = 0;
181 config->ic_port[config->ic_nport].ir_end = 0;
182 config->ic_port[config->ic_nport].ir_size = 0;
183 config->ic_port[config->ic_nport].ir_align = 0;
188 pnp_printf(id, "adding fixed io range "
189 "%#x-%#x, size=%#x, "
192 I16(res) + res[2] - 1,
195 config->ic_port[config->ic_nport].ir_start = I16(res);
196 config->ic_port[config->ic_nport].ir_end =
197 I16(res) + res[2] - 1;
198 config->ic_port[config->ic_nport].ir_size = res[2];
199 config->ic_port[config->ic_nport].ir_align = 1;
205 pnp_printf(id, "end config\n");
209 /* Skip this resource */
210 pnp_printf(id, "unexpected small tag %d\n",
216 switch (PNP_LRES_NUM(tag)) {
218 case PNP_TAG_ID_UNICODE:
219 case PNP_TAG_LARGE_VENDOR:
220 /* these descriptors are quietly ignored */
223 case PNP_TAG_ID_ANSI:
224 if (len > sizeof(buf) - 1)
225 len = sizeof(buf) - 1;
226 bcopy(res, buf, len);
229 * Trim trailing spaces and garbage.
231 while (len > 0 && buf[len - 1] <= ' ')
234 device_set_desc_copy(dev, buf);
237 case PNP_TAG_MEMORY_RANGE:
238 if (config->ic_nmem == ISA_NMEM) {
239 pnp_printf(id, "too many memory ranges\n");
242 if (I16(res + 7) == 0) {
243 /* a null descriptor */
244 config->ic_mem[config->ic_nmem].ir_start = 0;
245 config->ic_mem[config->ic_nmem].ir_end = 0;
246 config->ic_mem[config->ic_nmem].ir_size = 0;
247 config->ic_mem[config->ic_nmem].ir_align = 0;
252 temp = I16(res + 7) << 8;
253 pnp_printf(id, "adding memory range "
254 "%#x-%#x, size=%#x, "
257 (I16(res + 3) << 8) + temp - 1,
260 config->ic_mem[config->ic_nmem].ir_start =
262 config->ic_mem[config->ic_nmem].ir_end =
263 (I16(res + 3) << 8) + (I16(res + 7) << 8) - 1;
264 config->ic_mem[config->ic_nmem].ir_size =
266 config->ic_mem[config->ic_nmem].ir_align = I16(res + 5);
267 if (!config->ic_mem[config->ic_nmem].ir_align)
268 config->ic_mem[config->ic_nmem].ir_align =
273 case PNP_TAG_MEMORY32_RANGE:
274 if (config->ic_nmem == ISA_NMEM) {
275 pnp_printf(id, "too many memory ranges\n");
278 if (I32(res + 13) == 0) {
279 /* a null descriptor */
280 config->ic_mem[config->ic_nmem].ir_start = 0;
281 config->ic_mem[config->ic_nmem].ir_end = 0;
282 config->ic_mem[config->ic_nmem].ir_size = 0;
283 config->ic_mem[config->ic_nmem].ir_align = 0;
288 pnp_printf(id, "adding memory32 range "
289 "%#x-%#x, size=%#x, "
292 I32(res + 5) + I32(res + 13) - 1,
293 I32(res + 13), I32(res + 9));
295 config->ic_mem[config->ic_nmem].ir_start = I32(res + 1);
296 config->ic_mem[config->ic_nmem].ir_end =
297 I32(res + 5) + I32(res + 13) - 1;
298 config->ic_mem[config->ic_nmem].ir_size = I32(res + 13);
299 config->ic_mem[config->ic_nmem].ir_align = I32(res + 9);
303 case PNP_TAG_MEMORY32_FIXED:
304 if (config->ic_nmem == ISA_NMEM) {
305 pnp_printf(id, "too many memory ranges\n");
308 if (I32(res + 5) == 0) {
309 /* a null descriptor */
310 config->ic_mem[config->ic_nmem].ir_start = 0;
311 config->ic_mem[config->ic_nmem].ir_end = 0;
312 config->ic_mem[config->ic_nmem].ir_size = 0;
313 config->ic_mem[config->ic_nmem].ir_align = 0;
317 pnp_printf(id, "adding fixed memory32 range "
318 "%#x-%#x, size=%#x\n",
320 I32(res + 1) + I32(res + 5) - 1,
323 config->ic_mem[config->ic_nmem].ir_start = I32(res + 1);
324 config->ic_mem[config->ic_nmem].ir_end =
325 I32(res + 1) + I32(res + 5) - 1;
326 config->ic_mem[config->ic_nmem].ir_size = I32(res + 5);
327 config->ic_mem[config->ic_nmem].ir_align = 1;
332 /* Skip this resource */
333 pnp_printf(id, "unexpected large tag %d\n",
343 * Parse a single "dependent" resource combination.
347 pnp_parse_dependant(device_t dev, u_char *resources, int len,
348 struct isa_config *config, int ldn)
352 res = pnp_scan_resources(dev, resources, len, config,
353 ldn, pnp_parse_desc);
358 pnp_merge_resources(device_t dev, struct isa_config *from,
359 struct isa_config *to)
364 parent = device_get_parent(dev);
365 for (i = 0; i < from->ic_nmem; i++) {
366 if (to->ic_nmem == ISA_NMEM) {
367 device_printf(parent, "too many memory ranges\n");
370 to->ic_mem[to->ic_nmem] = from->ic_mem[i];
373 for (i = 0; i < from->ic_nport; i++) {
374 if (to->ic_nport == ISA_NPORT) {
375 device_printf(parent, "too many port ranges\n");
378 to->ic_port[to->ic_nport] = from->ic_port[i];
381 for (i = 0; i < from->ic_nirq; i++) {
382 if (to->ic_nirq == ISA_NIRQ) {
383 device_printf(parent, "too many irq ranges\n");
386 to->ic_irqmask[to->ic_nirq] = from->ic_irqmask[i];
389 for (i = 0; i < from->ic_ndrq; i++) {
390 if (to->ic_ndrq == ISA_NDRQ) {
391 device_printf(parent, "too many drq ranges\n");
394 to->ic_drqmask[to->ic_ndrq] = from->ic_drqmask[i];
400 * Parse resource data for Logical Devices, make a list of available
401 * resource configurations, and add them to the device.
403 * This function exits as soon as it gets an error reading *ANY*
404 * Resource Data or it reaches the end of Resource Data.
408 pnp_parse_resources(device_t dev, u_char *resources, int len, int ldn)
410 struct isa_config *configs;
411 struct isa_config *config;
413 int priorities[1 + MAXDEP];
422 parent = device_get_parent(dev);
423 id = isa_get_logicalid(dev);
425 configs = kmalloc(sizeof(*configs)*(1 + MAXDEP),
426 M_DEVBUF, M_WAITOK | M_ZERO);
427 config = &configs[0];
436 if (PNP_RES_TYPE(tag) == 0) {
438 l = PNP_SRES_LEN(tag);
445 switch (PNP_SRES_NUM(tag)) {
447 case PNP_TAG_START_DEPENDANT:
450 * Copy the common resources first,
451 * then parse the "dependent" resources.
453 pnp_merge_resources(dev, &configs[0],
455 pnp_parse_dependant(dev, start,
460 if (ncfgs > MAXDEP) {
461 device_printf(parent, "too many dependent configs (%d)\n", MAXDEP);
465 config = &configs[ncfgs];
467 * If the priority is not specified,
468 * then use the default of 'acceptable'
471 priorities[ncfgs] = p[0];
473 priorities[ncfgs] = 1;
475 pnp_printf(id, "start dependent (%d)\n",
480 case PNP_TAG_END_DEPENDANT:
482 device_printf(parent,
483 "malformed resources\n");
488 * Copy the common resources first,
489 * then parse the "dependent" resources.
491 pnp_merge_resources(dev, &configs[0], config);
492 pnp_parse_dependant(dev, start, p - start - 1,
496 pnp_printf(id, "end dependent\n");
498 * Back to the common part; clear it
499 * as its contents has already been copied
502 config = &configs[0];
503 bzero(config, sizeof(*config));
508 device_printf(parent,
509 "malformed resources\n");
516 /* defer parsing a dependent section */
518 if (pnp_parse_desc(dev, tag, p, l, config, ldn))
538 pnp_parse_desc(dev, tag, p, l, config, ldn)) {
547 /* Single config without dependants */
548 ISA_ADD_CONFIG(parent, dev, priorities[0], &configs[0]);
549 kfree(configs, M_DEVBUF);
553 for (i = 1; i < ncfgs; i++) {
555 * Merge the remaining part of the common resources,
556 * if any. Strictly speaking, there shouldn't be common/main
557 * resources after the END_DEPENDENT tag.
559 pnp_merge_resources(dev, &configs[0], &configs[i]);
560 ISA_ADD_CONFIG(parent, dev, priorities[i], &configs[i]);
563 kfree(configs, M_DEVBUF);
567 pnp_scan_resources(device_t dev, u_char *resources, int len,
568 struct isa_config *config, int ldn, pnp_scan_cb *cb)
578 if (PNP_RES_TYPE(tag) == 0) {
580 l = PNP_SRES_LEN(tag);
583 if ((*cb)(dev, tag, p, l, config, ldn))
585 if (PNP_SRES_NUM(tag) == PNP_TAG_END)
596 if ((*cb)(dev, tag, p, l, config, ldn))