1 /*
2 * Copyright 1996 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
30 #ifndef lint
31 static const char rcsid[] =
32 "$FreeBSD$";
33 #endif /* not lint */
34
35 #include <sys/types.h>
36 #include <sys/fcntl.h>
37 #include <sys/mman.h>
38 #include <sys/pciio.h>
39 #include <sys/queue.h>
40
41 #include <vm/vm.h>
42
43 #include <dev/pci/pcireg.h>
44
45 #include <assert.h>
46 #include <ctype.h>
47 #include <err.h>
48 #include <inttypes.h>
49 #include <stdbool.h>
50 #include <stdlib.h>
51 #include <stdio.h>
52 #include <string.h>
53 #include <unistd.h>
54
55 #include "pathnames.h"
56 #include "pciconf.h"
57
58 struct pci_device_info
59 {
60 TAILQ_ENTRY(pci_device_info) link;
61 int id;
62 char *desc;
63 };
64
65 struct pci_vendor_info
66 {
67 TAILQ_ENTRY(pci_vendor_info) link;
68 TAILQ_HEAD(,pci_device_info) devs;
69 int id;
70 char *desc;
71 };
72
73 static TAILQ_HEAD(,pci_vendor_info) pci_vendors;
74
75 static struct pcisel getsel(const char *str);
76 static void list_bridge(int fd, struct pci_conf *p);
77 static void list_bars(int fd, struct pci_conf *p);
78 static void list_devs(const char *name, int verbose, int bars, int bridge,
79 int caps, int errors, int vpd);
80 static void list_verbose(struct pci_conf *p);
81 static void list_vpd(int fd, struct pci_conf *p);
82 static const char *guess_class(struct pci_conf *p);
83 static const char *guess_subclass(struct pci_conf *p);
84 static int load_vendors(void);
85 static void readit(const char *, const char *, int);
86 static void writeit(const char *, const char *, const char *, int);
87 static void chkattached(const char *);
88 static void dump_bar(const char *name, const char *reg, const char *bar_start,
89 const char *bar_count, int width, int verbose);
90
91 static int exitstatus = 0;
92
93 static void
usage(void)94 usage(void)
95 {
96
97 fprintf(stderr, "%s",
98 "usage: pciconf -l [-BbcevV] [device]\n"
99 " pciconf -a device\n"
100 " pciconf -r [-b | -h] device addr[:addr2]\n"
101 " pciconf -w [-b | -h] device addr value\n"
102 " pciconf -D [-b | -h | -x] device bar [start [count]]"
103 "\n");
104 exit(1);
105 }
106
107 int
main(int argc,char ** argv)108 main(int argc, char **argv)
109 {
110 int c, width;
111 int listmode, readmode, writemode, attachedmode, dumpbarmode;
112 int bars, bridge, caps, errors, verbose, vpd;
113
114 listmode = readmode = writemode = attachedmode = dumpbarmode = 0;
115 bars = bridge = caps = errors = verbose = vpd= 0;
116 width = 4;
117
118 while ((c = getopt(argc, argv, "aBbcDehlrwVv")) != -1) {
119 switch(c) {
120 case 'a':
121 attachedmode = 1;
122 break;
123
124 case 'B':
125 bridge = 1;
126 break;
127
128 case 'b':
129 bars = 1;
130 width = 1;
131 break;
132
133 case 'c':
134 caps = 1;
135 break;
136
137 case 'D':
138 dumpbarmode = 1;
139 break;
140
141 case 'e':
142 errors = 1;
143 break;
144
145 case 'h':
146 width = 2;
147 break;
148
149 case 'l':
150 listmode = 1;
151 break;
152
153 case 'r':
154 readmode = 1;
155 break;
156
157 case 'w':
158 writemode = 1;
159 break;
160
161 case 'v':
162 verbose = 1;
163 break;
164
165 case 'V':
166 vpd = 1;
167 break;
168
169 case 'x':
170 width = 8;
171 break;
172
173 default:
174 usage();
175 }
176 }
177
178 if ((listmode && optind >= argc + 1)
179 || (writemode && optind + 3 != argc)
180 || (readmode && optind + 2 != argc)
181 || (attachedmode && optind + 1 != argc)
182 || (dumpbarmode && (optind + 2 > argc || optind + 4 < argc))
183 || (width == 8 && !dumpbarmode))
184 usage();
185
186 if (listmode) {
187 list_devs(optind + 1 == argc ? argv[optind] : NULL, verbose,
188 bars, bridge, caps, errors, vpd);
189 } else if (attachedmode) {
190 chkattached(argv[optind]);
191 } else if (readmode) {
192 readit(argv[optind], argv[optind + 1], width);
193 } else if (writemode) {
194 writeit(argv[optind], argv[optind + 1], argv[optind + 2],
195 width);
196 } else if (dumpbarmode) {
197 dump_bar(argv[optind], argv[optind + 1],
198 optind + 2 < argc ? argv[optind + 2] : NULL,
199 optind + 3 < argc ? argv[optind + 3] : NULL,
200 width, verbose);
201 } else {
202 usage();
203 }
204
205 return (exitstatus);
206 }
207
208 static void
list_devs(const char * name,int verbose,int bars,int bridge,int caps,int errors,int vpd)209 list_devs(const char *name, int verbose, int bars, int bridge, int caps,
210 int errors, int vpd)
211 {
212 int fd;
213 struct pci_conf_io pc;
214 struct pci_conf conf[255], *p;
215 struct pci_match_conf patterns[1];
216 int none_count = 0;
217
218 if (verbose)
219 load_vendors();
220
221 fd = open(_PATH_DEVPCI, (bridge || caps || errors) ? O_RDWR : O_RDONLY,
222 0);
223 if (fd < 0)
224 err(1, "%s", _PATH_DEVPCI);
225
226 bzero(&pc, sizeof(struct pci_conf_io));
227 pc.match_buf_len = sizeof(conf);
228 pc.matches = conf;
229 if (name != NULL) {
230 bzero(&patterns, sizeof(patterns));
231 patterns[0].pc_sel = getsel(name);
232 patterns[0].flags = PCI_GETCONF_MATCH_DOMAIN |
233 PCI_GETCONF_MATCH_BUS | PCI_GETCONF_MATCH_DEV |
234 PCI_GETCONF_MATCH_FUNC;
235 pc.num_patterns = 1;
236 pc.pat_buf_len = sizeof(patterns);
237 pc.patterns = patterns;
238 }
239
240 do {
241 if (ioctl(fd, PCIOCGETCONF, &pc) == -1)
242 err(1, "ioctl(PCIOCGETCONF)");
243
244 /*
245 * 255 entries should be more than enough for most people,
246 * but if someone has more devices, and then changes things
247 * around between ioctls, we'll do the cheesy thing and
248 * just bail. The alternative would be to go back to the
249 * beginning of the list, and print things twice, which may
250 * not be desirable.
251 */
252 if (pc.status == PCI_GETCONF_LIST_CHANGED) {
253 warnx("PCI device list changed, please try again");
254 exitstatus = 1;
255 close(fd);
256 return;
257 } else if (pc.status == PCI_GETCONF_ERROR) {
258 warnx("error returned from PCIOCGETCONF ioctl");
259 exitstatus = 1;
260 close(fd);
261 return;
262 }
263 for (p = conf; p < &conf[pc.num_matches]; p++) {
264 printf("%s%d@pci%d:%d:%d:%d:\tclass=0x%06x card=0x%08x "
265 "chip=0x%08x rev=0x%02x hdr=0x%02x\n",
266 *p->pd_name ? p->pd_name :
267 "none",
268 *p->pd_name ? (int)p->pd_unit :
269 none_count++, p->pc_sel.pc_domain,
270 p->pc_sel.pc_bus, p->pc_sel.pc_dev,
271 p->pc_sel.pc_func, (p->pc_class << 16) |
272 (p->pc_subclass << 8) | p->pc_progif,
273 (p->pc_subdevice << 16) | p->pc_subvendor,
274 (p->pc_device << 16) | p->pc_vendor,
275 p->pc_revid, p->pc_hdr);
276 if (verbose)
277 list_verbose(p);
278 if (bars)
279 list_bars(fd, p);
280 if (bridge)
281 list_bridge(fd, p);
282 if (caps)
283 list_caps(fd, p);
284 if (errors)
285 list_errors(fd, p);
286 if (vpd)
287 list_vpd(fd, p);
288 }
289 } while (pc.status == PCI_GETCONF_MORE_DEVS);
290
291 close(fd);
292 }
293
294 static void
print_bus_range(int fd,struct pci_conf * p,int secreg,int subreg)295 print_bus_range(int fd, struct pci_conf *p, int secreg, int subreg)
296 {
297 uint8_t secbus, subbus;
298
299 secbus = read_config(fd, &p->pc_sel, secreg, 1);
300 subbus = read_config(fd, &p->pc_sel, subreg, 1);
301 printf(" bus range = %u-%u\n", secbus, subbus);
302 }
303
304 static void
print_window(int reg,const char * type,int range,uint64_t base,uint64_t limit)305 print_window(int reg, const char *type, int range, uint64_t base,
306 uint64_t limit)
307 {
308
309 printf(" window[%02x] = type %s, range %2d, addr %#jx-%#jx, %s\n",
310 reg, type, range, (uintmax_t)base, (uintmax_t)limit,
311 base < limit ? "enabled" : "disabled");
312 }
313
314 static void
print_special_decode(bool isa,bool vga,bool subtractive)315 print_special_decode(bool isa, bool vga, bool subtractive)
316 {
317 bool comma;
318
319 if (isa || vga || subtractive) {
320 comma = false;
321 printf(" decode = ");
322 if (isa) {
323 printf("ISA");
324 comma = true;
325 }
326 if (vga) {
327 printf("%sVGA", comma ? ", " : "");
328 comma = true;
329 }
330 if (subtractive)
331 printf("%ssubtractive", comma ? ", " : "");
332 printf("\n");
333 }
334 }
335
336 static void
print_bridge_windows(int fd,struct pci_conf * p)337 print_bridge_windows(int fd, struct pci_conf *p)
338 {
339 uint64_t base, limit;
340 uint32_t val;
341 uint16_t bctl;
342 bool subtractive;
343 int range;
344
345 /*
346 * XXX: This assumes that a window with a base and limit of 0
347 * is not implemented. In theory a window might be programmed
348 * at the smallest size with a base of 0, but those do not seem
349 * common in practice.
350 */
351 val = read_config(fd, &p->pc_sel, PCIR_IOBASEL_1, 1);
352 if (val != 0 || read_config(fd, &p->pc_sel, PCIR_IOLIMITL_1, 1) != 0) {
353 if ((val & PCIM_BRIO_MASK) == PCIM_BRIO_32) {
354 base = PCI_PPBIOBASE(
355 read_config(fd, &p->pc_sel, PCIR_IOBASEH_1, 2),
356 val);
357 limit = PCI_PPBIOLIMIT(
358 read_config(fd, &p->pc_sel, PCIR_IOLIMITH_1, 2),
359 read_config(fd, &p->pc_sel, PCIR_IOLIMITL_1, 1));
360 range = 32;
361 } else {
362 base = PCI_PPBIOBASE(0, val);
363 limit = PCI_PPBIOLIMIT(0,
364 read_config(fd, &p->pc_sel, PCIR_IOLIMITL_1, 1));
365 range = 16;
366 }
367 print_window(PCIR_IOBASEL_1, "I/O Port", range, base, limit);
368 }
369
370 base = PCI_PPBMEMBASE(0,
371 read_config(fd, &p->pc_sel, PCIR_MEMBASE_1, 2));
372 limit = PCI_PPBMEMLIMIT(0,
373 read_config(fd, &p->pc_sel, PCIR_MEMLIMIT_1, 2));
374 print_window(PCIR_MEMBASE_1, "Memory", 32, base, limit);
375
376 val = read_config(fd, &p->pc_sel, PCIR_PMBASEL_1, 2);
377 if (val != 0 || read_config(fd, &p->pc_sel, PCIR_PMLIMITL_1, 2) != 0) {
378 if ((val & PCIM_BRPM_MASK) == PCIM_BRPM_64) {
379 base = PCI_PPBMEMBASE(
380 read_config(fd, &p->pc_sel, PCIR_PMBASEH_1, 4),
381 val);
382 limit = PCI_PPBMEMLIMIT(
383 read_config(fd, &p->pc_sel, PCIR_PMLIMITH_1, 4),
384 read_config(fd, &p->pc_sel, PCIR_PMLIMITL_1, 2));
385 range = 64;
386 } else {
387 base = PCI_PPBMEMBASE(0, val);
388 limit = PCI_PPBMEMLIMIT(0,
389 read_config(fd, &p->pc_sel, PCIR_PMLIMITL_1, 2));
390 range = 32;
391 }
392 print_window(PCIR_PMBASEL_1, "Prefetchable Memory", range, base,
393 limit);
394 }
395
396 /*
397 * XXX: This list of bridges that are subtractive but do not set
398 * progif to indicate it is copied from pci_pci.c.
399 */
400 subtractive = p->pc_progif == PCIP_BRIDGE_PCI_SUBTRACTIVE;
401 switch (p->pc_device << 16 | p->pc_vendor) {
402 case 0xa002177d: /* Cavium ThunderX */
403 case 0x124b8086: /* Intel 82380FB Mobile */
404 case 0x060513d7: /* Toshiba ???? */
405 subtractive = true;
406 }
407 if (p->pc_vendor == 0x8086 && (p->pc_device & 0xff00) == 0x2400)
408 subtractive = true;
409
410 bctl = read_config(fd, &p->pc_sel, PCIR_BRIDGECTL_1, 2);
411 print_special_decode(bctl & PCIB_BCR_ISA_ENABLE,
412 bctl & PCIB_BCR_VGA_ENABLE, subtractive);
413 }
414
415 static void
print_cardbus_mem_window(int fd,struct pci_conf * p,int basereg,int limitreg,bool prefetch)416 print_cardbus_mem_window(int fd, struct pci_conf *p, int basereg, int limitreg,
417 bool prefetch)
418 {
419
420 print_window(basereg, prefetch ? "Prefetchable Memory" : "Memory", 32,
421 PCI_CBBMEMBASE(read_config(fd, &p->pc_sel, basereg, 4)),
422 PCI_CBBMEMLIMIT(read_config(fd, &p->pc_sel, limitreg, 4)));
423 }
424
425 static void
print_cardbus_io_window(int fd,struct pci_conf * p,int basereg,int limitreg)426 print_cardbus_io_window(int fd, struct pci_conf *p, int basereg, int limitreg)
427 {
428 uint32_t base, limit;
429 uint32_t val;
430 int range;
431
432 val = read_config(fd, &p->pc_sel, basereg, 2);
433 if ((val & PCIM_CBBIO_MASK) == PCIM_CBBIO_32) {
434 base = PCI_CBBIOBASE(read_config(fd, &p->pc_sel, basereg, 4));
435 limit = PCI_CBBIOBASE(read_config(fd, &p->pc_sel, limitreg, 4));
436 range = 32;
437 } else {
438 base = PCI_CBBIOBASE(val);
439 limit = PCI_CBBIOBASE(read_config(fd, &p->pc_sel, limitreg, 2));
440 range = 16;
441 }
442 print_window(basereg, "I/O Port", range, base, limit);
443 }
444
445 static void
print_cardbus_windows(int fd,struct pci_conf * p)446 print_cardbus_windows(int fd, struct pci_conf *p)
447 {
448 uint16_t bctl;
449
450 bctl = read_config(fd, &p->pc_sel, PCIR_BRIDGECTL_2, 2);
451 print_cardbus_mem_window(fd, p, PCIR_MEMBASE0_2, PCIR_MEMLIMIT0_2,
452 bctl & CBB_BCR_PREFETCH_0_ENABLE);
453 print_cardbus_mem_window(fd, p, PCIR_MEMBASE1_2, PCIR_MEMLIMIT1_2,
454 bctl & CBB_BCR_PREFETCH_1_ENABLE);
455 print_cardbus_io_window(fd, p, PCIR_IOBASE0_2, PCIR_IOLIMIT0_2);
456 print_cardbus_io_window(fd, p, PCIR_IOBASE1_2, PCIR_IOLIMIT1_2);
457 print_special_decode(bctl & CBB_BCR_ISA_ENABLE,
458 bctl & CBB_BCR_VGA_ENABLE, false);
459 }
460
461 static void
list_bridge(int fd,struct pci_conf * p)462 list_bridge(int fd, struct pci_conf *p)
463 {
464
465 switch (p->pc_hdr & PCIM_HDRTYPE) {
466 case PCIM_HDRTYPE_BRIDGE:
467 print_bus_range(fd, p, PCIR_SECBUS_1, PCIR_SUBBUS_1);
468 print_bridge_windows(fd, p);
469 break;
470 case PCIM_HDRTYPE_CARDBUS:
471 print_bus_range(fd, p, PCIR_SECBUS_2, PCIR_SUBBUS_2);
472 print_cardbus_windows(fd, p);
473 break;
474 }
475 }
476
477 static void
list_bars(int fd,struct pci_conf * p)478 list_bars(int fd, struct pci_conf *p)
479 {
480 int i, max;
481
482 switch (p->pc_hdr & PCIM_HDRTYPE) {
483 case PCIM_HDRTYPE_NORMAL:
484 max = PCIR_MAX_BAR_0;
485 break;
486 case PCIM_HDRTYPE_BRIDGE:
487 max = PCIR_MAX_BAR_1;
488 break;
489 case PCIM_HDRTYPE_CARDBUS:
490 max = PCIR_MAX_BAR_2;
491 break;
492 default:
493 return;
494 }
495
496 for (i = 0; i <= max; i++)
497 print_bar(fd, p, "bar ", PCIR_BAR(i));
498 }
499
500 void
print_bar(int fd,struct pci_conf * p,const char * label,uint16_t bar_offset)501 print_bar(int fd, struct pci_conf *p, const char *label, uint16_t bar_offset)
502 {
503 uint64_t base;
504 const char *type;
505 struct pci_bar_io bar;
506 int range;
507
508 bar.pbi_sel = p->pc_sel;
509 bar.pbi_reg = bar_offset;
510 if (ioctl(fd, PCIOCGETBAR, &bar) < 0)
511 return;
512 if (PCI_BAR_IO(bar.pbi_base)) {
513 type = "I/O Port";
514 range = 32;
515 base = bar.pbi_base & PCIM_BAR_IO_BASE;
516 } else {
517 if (bar.pbi_base & PCIM_BAR_MEM_PREFETCH)
518 type = "Prefetchable Memory";
519 else
520 type = "Memory";
521 switch (bar.pbi_base & PCIM_BAR_MEM_TYPE) {
522 case PCIM_BAR_MEM_32:
523 range = 32;
524 break;
525 case PCIM_BAR_MEM_1MB:
526 range = 20;
527 break;
528 case PCIM_BAR_MEM_64:
529 range = 64;
530 break;
531 default:
532 range = -1;
533 }
534 base = bar.pbi_base & ~((uint64_t)0xf);
535 }
536 printf(" %s[%02x] = type %s, range %2d, base %#jx, ",
537 label, bar_offset, type, range, (uintmax_t)base);
538 printf("size %ju, %s\n", (uintmax_t)bar.pbi_length,
539 bar.pbi_enabled ? "enabled" : "disabled");
540 }
541
542 static void
list_verbose(struct pci_conf * p)543 list_verbose(struct pci_conf *p)
544 {
545 struct pci_vendor_info *vi;
546 struct pci_device_info *di;
547 const char *dp;
548
549 TAILQ_FOREACH(vi, &pci_vendors, link) {
550 if (vi->id == p->pc_vendor) {
551 printf(" vendor = '%s'\n", vi->desc);
552 break;
553 }
554 }
555 if (vi == NULL) {
556 di = NULL;
557 } else {
558 TAILQ_FOREACH(di, &vi->devs, link) {
559 if (di->id == p->pc_device) {
560 printf(" device = '%s'\n", di->desc);
561 break;
562 }
563 }
564 }
565 if ((dp = guess_class(p)) != NULL)
566 printf(" class = %s\n", dp);
567 if ((dp = guess_subclass(p)) != NULL)
568 printf(" subclass = %s\n", dp);
569 }
570
571 static void
list_vpd(int fd,struct pci_conf * p)572 list_vpd(int fd, struct pci_conf *p)
573 {
574 struct pci_list_vpd_io list;
575 struct pci_vpd_element *vpd, *end;
576
577 list.plvi_sel = p->pc_sel;
578 list.plvi_len = 0;
579 list.plvi_data = NULL;
580 if (ioctl(fd, PCIOCLISTVPD, &list) < 0 || list.plvi_len == 0)
581 return;
582
583 list.plvi_data = malloc(list.plvi_len);
584 if (ioctl(fd, PCIOCLISTVPD, &list) < 0) {
585 free(list.plvi_data);
586 return;
587 }
588
589 vpd = list.plvi_data;
590 end = (struct pci_vpd_element *)((char *)vpd + list.plvi_len);
591 for (; vpd < end; vpd = PVE_NEXT(vpd)) {
592 if (vpd->pve_flags == PVE_FLAG_IDENT) {
593 printf(" VPD ident = '%.*s'\n",
594 (int)vpd->pve_datalen, vpd->pve_data);
595 continue;
596 }
597
598 /* Ignore the checksum keyword. */
599 if (!(vpd->pve_flags & PVE_FLAG_RW) &&
600 memcmp(vpd->pve_keyword, "RV", 2) == 0)
601 continue;
602
603 /* Ignore remaining read-write space. */
604 if (vpd->pve_flags & PVE_FLAG_RW &&
605 memcmp(vpd->pve_keyword, "RW", 2) == 0)
606 continue;
607
608 /* Handle extended capability keyword. */
609 if (!(vpd->pve_flags & PVE_FLAG_RW) &&
610 memcmp(vpd->pve_keyword, "CP", 2) == 0) {
611 printf(" VPD ro CP = ID %02x in map 0x%x[0x%x]\n",
612 (unsigned int)vpd->pve_data[0],
613 PCIR_BAR((unsigned int)vpd->pve_data[1]),
614 (unsigned int)vpd->pve_data[3] << 8 |
615 (unsigned int)vpd->pve_data[2]);
616 continue;
617 }
618
619 /* Remaining keywords should all have ASCII values. */
620 printf(" VPD %s %c%c = '%.*s'\n",
621 vpd->pve_flags & PVE_FLAG_RW ? "rw" : "ro",
622 vpd->pve_keyword[0], vpd->pve_keyword[1],
623 (int)vpd->pve_datalen, vpd->pve_data);
624 }
625 free(list.plvi_data);
626 }
627
628 /*
629 * This is a direct cut-and-paste from the table in sys/dev/pci/pci.c.
630 */
631 static struct
632 {
633 int class;
634 int subclass;
635 const char *desc;
636 } pci_nomatch_tab[] = {
637 {PCIC_OLD, -1, "old"},
638 {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"},
639 {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"},
640 {PCIC_STORAGE, -1, "mass storage"},
641 {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"},
642 {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"},
643 {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"},
644 {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"},
645 {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"},
646 {PCIC_STORAGE, PCIS_STORAGE_ATA_ADMA, "ATA (ADMA)"},
647 {PCIC_STORAGE, PCIS_STORAGE_SATA, "SATA"},
648 {PCIC_STORAGE, PCIS_STORAGE_SAS, "SAS"},
649 {PCIC_STORAGE, PCIS_STORAGE_NVM, "NVM"},
650 {PCIC_NETWORK, -1, "network"},
651 {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"},
652 {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"},
653 {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"},
654 {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"},
655 {PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"},
656 {PCIC_DISPLAY, -1, "display"},
657 {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"},
658 {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"},
659 {PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"},
660 {PCIC_MULTIMEDIA, -1, "multimedia"},
661 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"},
662 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"},
663 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TELE, "telephony"},
664 {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_HDA, "HDA"},
665 {PCIC_MEMORY, -1, "memory"},
666 {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"},
667 {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"},
668 {PCIC_BRIDGE, -1, "bridge"},
669 {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"},
670 {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"},
671 {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"},
672 {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"},
673 {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"},
674 {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"},
675 {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"},
676 {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"},
677 {PCIC_BRIDGE, PCIS_BRIDGE_RACEWAY, "PCI-RACEway"},
678 {PCIC_SIMPLECOMM, -1, "simple comms"},
679 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */
680 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"},
681 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MULSER, "multiport serial"},
682 {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MODEM, "generic modem"},
683 {PCIC_BASEPERIPH, -1, "base peripheral"},
684 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"},
685 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"},
686 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"},
687 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"},
688 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"},
689 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_SDHC, "SD host controller"},
690 {PCIC_BASEPERIPH, PCIS_BASEPERIPH_IOMMU, "IOMMU"},
691 {PCIC_INPUTDEV, -1, "input device"},
692 {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"},
693 {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"},
694 {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"},
695 {PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"},
696 {PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"},
697 {PCIC_DOCKING, -1, "docking station"},
698 {PCIC_PROCESSOR, -1, "processor"},
699 {PCIC_SERIALBUS, -1, "serial bus"},
700 {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"},
701 {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"},
702 {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"},
703 {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"},
704 {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"},
705 {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"},
706 {PCIC_WIRELESS, -1, "wireless controller"},
707 {PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"},
708 {PCIC_WIRELESS, PCIS_WIRELESS_IR, "IR"},
709 {PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF"},
710 {PCIC_INTELLIIO, -1, "intelligent I/O controller"},
711 {PCIC_INTELLIIO, PCIS_INTELLIIO_I2O, "I2O"},
712 {PCIC_SATCOM, -1, "satellite communication"},
713 {PCIC_SATCOM, PCIS_SATCOM_TV, "sat TV"},
714 {PCIC_SATCOM, PCIS_SATCOM_AUDIO, "sat audio"},
715 {PCIC_SATCOM, PCIS_SATCOM_VOICE, "sat voice"},
716 {PCIC_SATCOM, PCIS_SATCOM_DATA, "sat data"},
717 {PCIC_CRYPTO, -1, "encrypt/decrypt"},
718 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "network/computer crypto"},
719 {PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "entertainment crypto"},
720 {PCIC_DASP, -1, "dasp"},
721 {PCIC_DASP, PCIS_DASP_DPIO, "DPIO module"},
722 {PCIC_DASP, PCIS_DASP_PERFCNTRS, "performance counters"},
723 {PCIC_DASP, PCIS_DASP_COMM_SYNC, "communication synchronizer"},
724 {PCIC_DASP, PCIS_DASP_MGMT_CARD, "signal processing management"},
725 {PCIC_ACCEL, -1, "processing accelerators"},
726 {PCIC_ACCEL, PCIS_ACCEL_PROCESSING, "processing accelerators"},
727 {PCIC_INSTRUMENT, -1, "non-essential instrumentation"},
728 {0, 0, NULL}
729 };
730
731 static const char *
guess_class(struct pci_conf * p)732 guess_class(struct pci_conf *p)
733 {
734 int i;
735
736 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
737 if (pci_nomatch_tab[i].class == p->pc_class)
738 return(pci_nomatch_tab[i].desc);
739 }
740 return(NULL);
741 }
742
743 static const char *
guess_subclass(struct pci_conf * p)744 guess_subclass(struct pci_conf *p)
745 {
746 int i;
747
748 for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
749 if ((pci_nomatch_tab[i].class == p->pc_class) &&
750 (pci_nomatch_tab[i].subclass == p->pc_subclass))
751 return(pci_nomatch_tab[i].desc);
752 }
753 return(NULL);
754 }
755
756 static int
load_vendors(void)757 load_vendors(void)
758 {
759 const char *dbf;
760 FILE *db;
761 struct pci_vendor_info *cv;
762 struct pci_device_info *cd;
763 char buf[1024], str[1024];
764 char *ch;
765 int id, error;
766
767 /*
768 * Locate the database and initialise.
769 */
770 TAILQ_INIT(&pci_vendors);
771 if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL)
772 dbf = _PATH_LPCIVDB;
773 if ((db = fopen(dbf, "r")) == NULL) {
774 dbf = _PATH_PCIVDB;
775 if ((db = fopen(dbf, "r")) == NULL)
776 return(1);
777 }
778 cv = NULL;
779 cd = NULL;
780 error = 0;
781
782 /*
783 * Scan input lines from the database
784 */
785 for (;;) {
786 if (fgets(buf, sizeof(buf), db) == NULL)
787 break;
788
789 if ((ch = strchr(buf, '#')) != NULL)
790 *ch = '\0';
791 ch = strchr(buf, '\0') - 1;
792 while (ch > buf && isspace(*ch))
793 *ch-- = '\0';
794 if (ch <= buf)
795 continue;
796
797 /* Can't handle subvendor / subdevice entries yet */
798 if (buf[0] == '\t' && buf[1] == '\t')
799 continue;
800
801 /* Check for vendor entry */
802 if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) {
803 if ((id == 0) || (strlen(str) < 1))
804 continue;
805 if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) {
806 warn("allocating vendor entry");
807 error = 1;
808 break;
809 }
810 if ((cv->desc = strdup(str)) == NULL) {
811 free(cv);
812 warn("allocating vendor description");
813 error = 1;
814 break;
815 }
816 cv->id = id;
817 TAILQ_INIT(&cv->devs);
818 TAILQ_INSERT_TAIL(&pci_vendors, cv, link);
819 continue;
820 }
821
822 /* Check for device entry */
823 if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) {
824 if ((id == 0) || (strlen(str) < 1))
825 continue;
826 if (cv == NULL) {
827 warnx("device entry with no vendor!");
828 continue;
829 }
830 if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) {
831 warn("allocating device entry");
832 error = 1;
833 break;
834 }
835 if ((cd->desc = strdup(str)) == NULL) {
836 free(cd);
837 warn("allocating device description");
838 error = 1;
839 break;
840 }
841 cd->id = id;
842 TAILQ_INSERT_TAIL(&cv->devs, cd, link);
843 continue;
844 }
845
846 /* It's a comment or junk, ignore it */
847 }
848 if (ferror(db))
849 error = 1;
850 fclose(db);
851
852 return(error);
853 }
854
855 uint32_t
read_config(int fd,struct pcisel * sel,long reg,int width)856 read_config(int fd, struct pcisel *sel, long reg, int width)
857 {
858 struct pci_io pi;
859
860 pi.pi_sel = *sel;
861 pi.pi_reg = reg;
862 pi.pi_width = width;
863
864 if (ioctl(fd, PCIOCREAD, &pi) < 0)
865 err(1, "ioctl(PCIOCREAD)");
866
867 return (pi.pi_data);
868 }
869
870 static struct pcisel
getdevice(const char * name)871 getdevice(const char *name)
872 {
873 struct pci_conf_io pc;
874 struct pci_conf conf[1];
875 struct pci_match_conf patterns[1];
876 char *cp;
877 int fd;
878
879 fd = open(_PATH_DEVPCI, O_RDONLY, 0);
880 if (fd < 0)
881 err(1, "%s", _PATH_DEVPCI);
882
883 bzero(&pc, sizeof(struct pci_conf_io));
884 pc.match_buf_len = sizeof(conf);
885 pc.matches = conf;
886
887 bzero(&patterns, sizeof(patterns));
888
889 /*
890 * The pattern structure requires the unit to be split out from
891 * the driver name. Walk backwards from the end of the name to
892 * find the start of the unit.
893 */
894 if (name[0] == '\0')
895 errx(1, "Empty device name");
896 cp = strchr(name, '\0');
897 assert(cp != NULL && cp != name);
898 cp--;
899 while (cp != name && isdigit(cp[-1]))
900 cp--;
901 if (cp == name || !isdigit(*cp))
902 errx(1, "Invalid device name");
903 if ((size_t)(cp - name) + 1 > sizeof(patterns[0].pd_name))
904 errx(1, "Device name is too long");
905 memcpy(patterns[0].pd_name, name, cp - name);
906 patterns[0].pd_unit = strtol(cp, &cp, 10);
907 if (*cp != '\0')
908 errx(1, "Invalid device name");
909 patterns[0].flags = PCI_GETCONF_MATCH_NAME | PCI_GETCONF_MATCH_UNIT;
910 pc.num_patterns = 1;
911 pc.pat_buf_len = sizeof(patterns);
912 pc.patterns = patterns;
913
914 if (ioctl(fd, PCIOCGETCONF, &pc) == -1)
915 err(1, "ioctl(PCIOCGETCONF)");
916 if (pc.status != PCI_GETCONF_LAST_DEVICE &&
917 pc.status != PCI_GETCONF_MORE_DEVS)
918 errx(1, "error returned from PCIOCGETCONF ioctl");
919 close(fd);
920 if (pc.num_matches == 0)
921 errx(1, "Device not found");
922 return (conf[0].pc_sel);
923 }
924
925 static struct pcisel
parsesel(const char * str)926 parsesel(const char *str)
927 {
928 const char *ep;
929 char *eppos;
930 struct pcisel sel;
931 unsigned long selarr[4];
932 int i;
933
934 ep = strchr(str, '@');
935 if (ep != NULL)
936 ep++;
937 else
938 ep = str;
939
940 if (strncmp(ep, "pci", 3) == 0) {
941 ep += 3;
942 i = 0;
943 while (isdigit(*ep) && i < 4) {
944 selarr[i++] = strtoul(ep, &eppos, 10);
945 ep = eppos;
946 if (*ep == ':')
947 ep++;
948 }
949 if (i > 0 && *ep == '\0') {
950 sel.pc_func = (i > 2) ? selarr[--i] : 0;
951 sel.pc_dev = (i > 0) ? selarr[--i] : 0;
952 sel.pc_bus = (i > 0) ? selarr[--i] : 0;
953 sel.pc_domain = (i > 0) ? selarr[--i] : 0;
954 return (sel);
955 }
956 }
957 errx(1, "cannot parse selector %s", str);
958 }
959
960 static struct pcisel
getsel(const char * str)961 getsel(const char *str)
962 {
963
964 /*
965 * No device names contain colons and selectors always contain
966 * at least one colon.
967 */
968 if (strchr(str, ':') == NULL)
969 return (getdevice(str));
970 else
971 return (parsesel(str));
972 }
973
974 static void
readone(int fd,struct pcisel * sel,long reg,int width)975 readone(int fd, struct pcisel *sel, long reg, int width)
976 {
977
978 printf("%0*x", width*2, read_config(fd, sel, reg, width));
979 }
980
981 static void
readit(const char * name,const char * reg,int width)982 readit(const char *name, const char *reg, int width)
983 {
984 long rstart;
985 long rend;
986 long r;
987 char *end;
988 int i;
989 int fd;
990 struct pcisel sel;
991
992 fd = open(_PATH_DEVPCI, O_RDWR, 0);
993 if (fd < 0)
994 err(1, "%s", _PATH_DEVPCI);
995
996 rend = rstart = strtol(reg, &end, 0);
997 if (end && *end == ':') {
998 end++;
999 rend = strtol(end, (char **) 0, 0);
1000 }
1001 sel = getsel(name);
1002 for (i = 1, r = rstart; r <= rend; i++, r += width) {
1003 readone(fd, &sel, r, width);
1004 if (i && !(i % 8))
1005 putchar(' ');
1006 putchar(i % (16/width) ? ' ' : '\n');
1007 }
1008 if (i % (16/width) != 1)
1009 putchar('\n');
1010 close(fd);
1011 }
1012
1013 static void
writeit(const char * name,const char * reg,const char * data,int width)1014 writeit(const char *name, const char *reg, const char *data, int width)
1015 {
1016 int fd;
1017 struct pci_io pi;
1018
1019 pi.pi_sel = getsel(name);
1020 pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */
1021 pi.pi_width = width;
1022 pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */
1023
1024 fd = open(_PATH_DEVPCI, O_RDWR, 0);
1025 if (fd < 0)
1026 err(1, "%s", _PATH_DEVPCI);
1027
1028 if (ioctl(fd, PCIOCWRITE, &pi) < 0)
1029 err(1, "ioctl(PCIOCWRITE)");
1030 close(fd);
1031 }
1032
1033 static void
chkattached(const char * name)1034 chkattached(const char *name)
1035 {
1036 int fd;
1037 struct pci_io pi;
1038
1039 pi.pi_sel = getsel(name);
1040
1041 fd = open(_PATH_DEVPCI, O_RDWR, 0);
1042 if (fd < 0)
1043 err(1, "%s", _PATH_DEVPCI);
1044
1045 if (ioctl(fd, PCIOCATTACHED, &pi) < 0)
1046 err(1, "ioctl(PCIOCATTACHED)");
1047
1048 exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */
1049 printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached");
1050 close(fd);
1051 }
1052
1053 static void
dump_bar(const char * name,const char * reg,const char * bar_start,const char * bar_count,int width,int verbose)1054 dump_bar(const char *name, const char *reg, const char *bar_start,
1055 const char *bar_count, int width, int verbose)
1056 {
1057 struct pci_bar_mmap pbm;
1058 uint32_t *dd;
1059 uint16_t *dh;
1060 uint8_t *db;
1061 uint64_t *dx, a, start, count;
1062 char *el;
1063 size_t res;
1064 int fd;
1065
1066 start = 0;
1067 if (bar_start != NULL) {
1068 start = strtoul(bar_start, &el, 0);
1069 if (*el != '\0')
1070 errx(1, "Invalid bar start specification %s",
1071 bar_start);
1072 }
1073 count = 0;
1074 if (bar_count != NULL) {
1075 count = strtoul(bar_count, &el, 0);
1076 if (*el != '\0')
1077 errx(1, "Invalid count specification %s",
1078 bar_count);
1079 }
1080
1081 pbm.pbm_sel = getsel(name);
1082 pbm.pbm_reg = strtoul(reg, &el, 0);
1083 if (*reg == '\0' || *el != '\0')
1084 errx(1, "Invalid bar specification %s", reg);
1085 pbm.pbm_flags = 0;
1086 pbm.pbm_memattr = VM_MEMATTR_UNCACHEABLE; /* XXX */
1087
1088 fd = open(_PATH_DEVPCI, O_RDWR, 0);
1089 if (fd < 0)
1090 err(1, "%s", _PATH_DEVPCI);
1091
1092 if (ioctl(fd, PCIOCBARMMAP, &pbm) < 0)
1093 err(1, "ioctl(PCIOCBARMMAP)");
1094
1095 if (count == 0)
1096 count = pbm.pbm_bar_length / width;
1097 if (start + count < start || (start + count) * width < (uint64_t)width)
1098 errx(1, "(start + count) x width overflow");
1099 if ((start + count) * width > pbm.pbm_bar_length) {
1100 if (start * width > pbm.pbm_bar_length)
1101 count = 0;
1102 else
1103 count = (pbm.pbm_bar_length - start * width) / width;
1104 }
1105 if (verbose) {
1106 fprintf(stderr,
1107 "Dumping pci%d:%d:%d:%d BAR %x mapped base %p "
1108 "off %#x length %#jx from %#jx count %#jx in %d-bytes\n",
1109 pbm.pbm_sel.pc_domain, pbm.pbm_sel.pc_bus,
1110 pbm.pbm_sel.pc_dev, pbm.pbm_sel.pc_func,
1111 pbm.pbm_reg, pbm.pbm_map_base, pbm.pbm_bar_off,
1112 pbm.pbm_bar_length, start, count, width);
1113 }
1114 switch (width) {
1115 case 1:
1116 db = (uint8_t *)(uintptr_t)((uintptr_t)pbm.pbm_map_base +
1117 pbm.pbm_bar_off + start * width);
1118 for (a = 0; a < count; a += width, db++) {
1119 res = fwrite(db, width, 1, stdout);
1120 if (res != 1) {
1121 errx(1, "error writing to stdout");
1122 break;
1123 }
1124 }
1125 break;
1126 case 2:
1127 dh = (uint16_t *)(uintptr_t)((uintptr_t)pbm.pbm_map_base +
1128 pbm.pbm_bar_off + start * width);
1129 for (a = 0; a < count; a += width, dh++) {
1130 res = fwrite(dh, width, 1, stdout);
1131 if (res != 1) {
1132 errx(1, "error writing to stdout");
1133 break;
1134 }
1135 }
1136 break;
1137 case 4:
1138 dd = (uint32_t *)(uintptr_t)((uintptr_t)pbm.pbm_map_base +
1139 pbm.pbm_bar_off + start * width);
1140 for (a = 0; a < count; a += width, dd++) {
1141 res = fwrite(dd, width, 1, stdout);
1142 if (res != 1) {
1143 errx(1, "error writing to stdout");
1144 break;
1145 }
1146 }
1147 break;
1148 case 8:
1149 dx = (uint64_t *)(uintptr_t)((uintptr_t)pbm.pbm_map_base +
1150 pbm.pbm_bar_off + start * width);
1151 for (a = 0; a < count; a += width, dx++) {
1152 res = fwrite(dx, width, 1, stdout);
1153 if (res != 1) {
1154 errx(1, "error writing to stdout");
1155 break;
1156 }
1157 }
1158 break;
1159 default:
1160 errx(1, "invalid access width");
1161 }
1162
1163 munmap((void *)pbm.pbm_map_base, pbm.pbm_map_length);
1164 close(fd);
1165 }
1166