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tmpfs - Move dnode lock to improve unlink performance
[dragonfly.git] / usr.sbin / pciconf / cap.c
blob2f82251973c167b16991f404f9b68a175995b955
1 /*-
2 * Copyright (c) 2007 Yahoo!, Inc.
3 * All rights reserved.
4 * Written by: John Baldwin <jhb@FreeBSD.org>
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of any co-contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD: src/usr.sbin/pciconf/cap.c,v 1.11 2010/09/16 16:03:12 jhb Exp $
31 */
32
33 #include <sys/types.h>
34
35 #include <err.h>
36 #include <stdio.h>
37 #include <sys/agpio.h>
38 #include <sys/pciio.h>
39
40 #include <dev/agp/agpreg.h>
41 #include <bus/pci/pcireg.h>
42
43 #include "pciconf.h"
44
45 static void list_ecaps(int fd, struct pci_conf *p);
46
47 static void
48 cap_power(int fd, struct pci_conf *p, uint8_t ptr)
49 {
50 uint16_t cap, status;
51
52 cap = read_config(fd, &p->pc_sel, ptr + PCIR_POWER_CAP, 2);
53 status = read_config(fd, &p->pc_sel, ptr + PCIR_POWER_STATUS, 2);
54 printf("powerspec %d supports D0%s%s D3 current D%d",
55 cap & PCIM_PCAP_SPEC,
56 cap & PCIM_PCAP_D1SUPP ? " D1" : "",
57 cap & PCIM_PCAP_D2SUPP ? " D2" : "",
58 status & PCIM_PSTAT_DMASK);
59 }
60
61 static void
62 cap_agp(int fd, struct pci_conf *p, uint8_t ptr)
63 {
64 uint32_t status, command;
65
66 status = read_config(fd, &p->pc_sel, ptr + AGP_STATUS, 4);
67 command = read_config(fd, &p->pc_sel, ptr + AGP_CAPID, 4);
68 printf("AGP ");
69 if (AGP_MODE_GET_MODE_3(status)) {
70 printf("v3 ");
71 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V3_RATE_8x)
72 printf("8x ");
73 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V3_RATE_4x)
74 printf("4x ");
75 } else {
76 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_4x)
77 printf("4x ");
78 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_2x)
79 printf("2x ");
80 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_1x)
81 printf("1x ");
82 }
83 if (AGP_MODE_GET_SBA(status))
84 printf("SBA ");
85 if (AGP_MODE_GET_AGP(command)) {
86 printf("enabled at ");
87 if (AGP_MODE_GET_MODE_3(command)) {
88 printf("v3 ");
89 switch (AGP_MODE_GET_RATE(command)) {
90 case AGP_MODE_V3_RATE_8x:
91 printf("8x ");
92 break;
93 case AGP_MODE_V3_RATE_4x:
94 printf("4x ");
95 break;
96 }
97 } else
98 switch (AGP_MODE_GET_RATE(command)) {
99 case AGP_MODE_V2_RATE_4x:
100 printf("4x ");
101 break;
102 case AGP_MODE_V2_RATE_2x:
103 printf("2x ");
104 break;
105 case AGP_MODE_V2_RATE_1x:
106 printf("1x ");
107 break;
108 }
109 if (AGP_MODE_GET_SBA(command))
110 printf("SBA ");
111 } else
112 printf("disabled");
113 }
114
115 static void
116 cap_vpd(int fd __unused, struct pci_conf *p __unused, uint8_t ptr __unused)
117 {
118
119 printf("VPD");
120 }
121
122 static void
123 cap_msi(int fd, struct pci_conf *p, uint8_t ptr)
124 {
125 uint16_t ctrl;
126 int msgnum;
127
128 ctrl = read_config(fd, &p->pc_sel, ptr + PCIR_MSI_CTRL, 2);
129 msgnum = 1 << ((ctrl & PCIM_MSICTRL_MMC_MASK) >> 1);
130 printf("MSI supports %d message%s%s%s ", msgnum,
131 (msgnum == 1) ? "" : "s",
132 (ctrl & PCIM_MSICTRL_64BIT) ? ", 64 bit" : "",
133 (ctrl & PCIM_MSICTRL_VECTOR) ? ", vector masks" : "");
134 if (ctrl & PCIM_MSICTRL_MSI_ENABLE) {
135 msgnum = 1 << ((ctrl & PCIM_MSICTRL_MME_MASK) >> 4);
136 printf("enabled with %d message%s", msgnum,
137 (msgnum == 1) ? "" : "s");
138 }
139 }
140
141 static void
142 cap_pcix(int fd, struct pci_conf *p, uint8_t ptr)
143 {
144 uint32_t status;
145 int comma, max_splits = 0, max_burst_read = 0;
146
147 status = read_config(fd, &p->pc_sel, ptr + PCIXR_STATUS, 4);
148 printf("PCI-X ");
149 if (status & PCIXM_STATUS_64BIT)
150 printf("64-bit ");
151 if ((p->pc_hdr & PCIM_HDRTYPE) == 1)
152 printf("bridge ");
153 if ((p->pc_hdr & PCIM_HDRTYPE) != 1 || (status & (PCIXM_STATUS_133CAP |
154 PCIXM_STATUS_266CAP | PCIXM_STATUS_533CAP)) != 0)
155 printf("supports");
156 comma = 0;
157 if (status & PCIXM_STATUS_133CAP) {
158 printf("%s 133MHz", comma ? "," : "");
159 comma = 1;
160 }
161 if (status & PCIXM_STATUS_266CAP) {
162 printf("%s 266MHz", comma ? "," : "");
163 comma = 1;
164 }
165 if (status & PCIXM_STATUS_533CAP) {
166 printf("%s 533MHz", comma ? "," : "");
167 comma = 1;
168 }
169 if ((p->pc_hdr & PCIM_HDRTYPE) == 1)
170 return;
171 switch (status & PCIXM_STATUS_MAX_READ) {
172 case PCIXM_STATUS_MAX_READ_512:
173 max_burst_read = 512;
174 break;
175 case PCIXM_STATUS_MAX_READ_1024:
176 max_burst_read = 1024;
177 break;
178 case PCIXM_STATUS_MAX_READ_2048:
179 max_burst_read = 2048;
180 break;
181 case PCIXM_STATUS_MAX_READ_4096:
182 max_burst_read = 4096;
183 break;
184 }
185 switch (status & PCIXM_STATUS_MAX_SPLITS) {
186 case PCIXM_STATUS_MAX_SPLITS_1:
187 max_splits = 1;
188 break;
189 case PCIXM_STATUS_MAX_SPLITS_2:
190 max_splits = 2;
191 break;
192 case PCIXM_STATUS_MAX_SPLITS_3:
193 max_splits = 3;
194 break;
195 case PCIXM_STATUS_MAX_SPLITS_4:
196 max_splits = 4;
197 break;
198 case PCIXM_STATUS_MAX_SPLITS_8:
199 max_splits = 8;
200 break;
201 case PCIXM_STATUS_MAX_SPLITS_12:
202 max_splits = 12;
203 break;
204 case PCIXM_STATUS_MAX_SPLITS_16:
205 max_splits = 16;
206 break;
207 case PCIXM_STATUS_MAX_SPLITS_32:
208 max_splits = 32;
209 break;
210 }
211 printf("%s %d burst read, %d split transaction%s", comma ? "," : "",
212 max_burst_read, max_splits, max_splits == 1 ? "" : "s");
213 }
214
215 static void
216 cap_ht(int fd, struct pci_conf *p, uint8_t ptr)
217 {
218 uint32_t reg;
219 uint16_t command;
220
221 command = read_config(fd, &p->pc_sel, ptr + PCIR_HT_COMMAND, 2);
222 printf("HT ");
223 if ((command & 0xe000) == PCIM_HTCAP_SLAVE)
224 printf("slave");
225 else if ((command & 0xe000) == PCIM_HTCAP_HOST)
226 printf("host");
227 else
228 switch (command & PCIM_HTCMD_CAP_MASK) {
229 case PCIM_HTCAP_SWITCH:
230 printf("switch");
231 break;
232 case PCIM_HTCAP_INTERRUPT:
233 printf("interrupt");
234 break;
235 case PCIM_HTCAP_REVISION_ID:
236 printf("revision ID");
237 break;
238 case PCIM_HTCAP_UNITID_CLUMPING:
239 printf("unit ID clumping");
240 break;
241 case PCIM_HTCAP_EXT_CONFIG_SPACE:
242 printf("extended config space");
243 break;
244 case PCIM_HTCAP_ADDRESS_MAPPING:
245 printf("address mapping");
246 break;
247 case PCIM_HTCAP_MSI_MAPPING:
248 printf("MSI %saddress window %s at 0x",
249 command & PCIM_HTCMD_MSI_FIXED ? "fixed " : "",
250 command & PCIM_HTCMD_MSI_ENABLE ? "enabled" :
251 "disabled");
252 if (command & PCIM_HTCMD_MSI_FIXED)
253 printf("fee00000");
254 else {
255 reg = read_config(fd, &p->pc_sel,
256 ptr + PCIR_HTMSI_ADDRESS_HI, 4);
257 if (reg != 0)
258 printf("%08x", reg);
259 reg = read_config(fd, &p->pc_sel,
260 ptr + PCIR_HTMSI_ADDRESS_LO, 4);
261 printf("%08x", reg);
262 }
263 break;
264 case PCIM_HTCAP_DIRECT_ROUTE:
265 printf("direct route");
266 break;
267 case PCIM_HTCAP_VCSET:
268 printf("VC set");
269 break;
270 case PCIM_HTCAP_RETRY_MODE:
271 printf("retry mode");
272 break;
273 case PCIM_HTCAP_X86_ENCODING:
274 printf("X86 encoding");
275 break;
276 default:
277 printf("unknown %02x", command);
278 break;
279 }
280 }
281
282 static void
283 cap_vendor(int fd, struct pci_conf *p, uint8_t ptr)
284 {
285 uint8_t length;
286
287 length = read_config(fd, &p->pc_sel, ptr + PCIR_VENDOR_LENGTH, 1);
288 printf("vendor (length %d)", length);
289 if (p->pc_vendor == 0x8086) {
290 /* Intel */
291 uint8_t version;
292
293 version = read_config(fd, &p->pc_sel, ptr + PCIR_VENDOR_DATA,
294 1);
295 printf(" Intel cap %d version %d", version >> 4, version & 0xf);
296 if (version >> 4 == 1 && length == 12) {
297 /* Feature Detection */
298 uint32_t fvec;
299 int comma;
300
301 comma = 0;
302 fvec = read_config(fd, &p->pc_sel, ptr +
303 PCIR_VENDOR_DATA + 5, 4);
304 printf("\n\t\t features:");
305 if (fvec & (1 << 0)) {
306 printf(" AMT");
307 comma = 1;
308 }
309 fvec = read_config(fd, &p->pc_sel, ptr +
310 PCIR_VENDOR_DATA + 1, 4);
311 if (fvec & (1 << 21)) {
312 printf("%s Quick Resume", comma ? "," : "");
313 comma = 1;
314 }
315 if (fvec & (1 << 18)) {
316 printf("%s SATA RAID-5", comma ? "," : "");
317 comma = 1;
318 }
319 if (fvec & (1 << 9)) {
320 printf("%s Mobile", comma ? "," : "");
321 comma = 1;
322 }
323 if (fvec & (1 << 7)) {
324 printf("%s 6 PCI-e x1 slots", comma ? "," : "");
325 comma = 1;
326 } else {
327 printf("%s 4 PCI-e x1 slots", comma ? "," : "");
328 comma = 1;
329 }
330 if (fvec & (1 << 5)) {
331 printf("%s SATA RAID-0/1/10", comma ? "," : "");
332 comma = 1;
333 }
334 if (fvec & (1 << 3)) {
335 printf("%s SATA AHCI", comma ? "," : "");
336 comma = 1;
337 }
338 }
339 }
340 }
341
342 static void
343 cap_debug(int fd, struct pci_conf *p, uint8_t ptr)
344 {
345 uint16_t debug_port;
346
347 debug_port = read_config(fd, &p->pc_sel, ptr + PCIR_DEBUG_PORT, 2);
348 printf("EHCI Debug Port at offset 0x%x in map 0x%x", debug_port &
349 PCIM_DEBUG_PORT_OFFSET, PCIR_BAR(debug_port >> 13));
350 }
351
352 static void
353 cap_subvendor(int fd, struct pci_conf *p, uint8_t ptr)
354 {
355 uint32_t id;
356
357 id = read_config(fd, &p->pc_sel, ptr + PCIR_SUBVENDCAP_ID, 4);
358 printf("PCI Bridge card=0x%08x", id);
359 }
360
361 #define MAX_PAYLOAD(field) (128 << (field))
362
363 static void
364 cap_express(int fd, struct pci_conf *p, uint8_t ptr)
365 {
366 uint32_t val;
367 uint16_t flags;
368
369 flags = read_config(fd, &p->pc_sel, ptr + PCIER_CAPABILITY, 2);
370 printf("PCI-Express %d ", flags & PCIEM_CAP_VER_MASK);
371 switch (flags & PCIEM_CAP_PORT_TYPE) {
372 case PCIE_END_POINT:
373 printf("endpoint");
374 break;
375 case PCIE_LEG_END_POINT:
376 printf("legacy endpoint");
377 break;
378 case PCIE_ROOT_PORT:
379 printf("root port");
380 break;
381 case PCIE_UP_STREAM_PORT:
382 printf("upstream port");
383 break;
384 case PCIE_DOWN_STREAM_PORT:
385 printf("downstream port");
386 break;
387 case PCIE_PCIE2PCI_BRIDGE:
388 printf("PCI bridge");
389 break;
390 case PCIE_PCI2PCIE_BRIDGE:
391 printf("PCI to PCIe bridge");
392 break;
393 case PCIE_ROOT_END_POINT:
394 printf("root endpoint");
395 break;
396 case PCIE_ROOT_EVT_COLL:
397 printf("event collector");
398 break;
399 default:
400 printf("type %d", (flags & PCIEM_CAP_PORT_TYPE) >> 8);
401 break;
402 }
403 if (flags & PCIEM_CAP_IRQ_MSGNO)
404 printf(" IRQ %d", (flags & PCIEM_CAP_IRQ_MSGNO) >> 8);
405 val = read_config(fd, &p->pc_sel, ptr + PCIER_DEVCAP, 4);
406 flags = read_config(fd, &p->pc_sel, ptr + PCIER_DEVCTRL, 2);
407 printf(" max data %d(%d)",
408 MAX_PAYLOAD((flags & PCIEM_DEVCAP_MAX_PAYLOAD) >> 5),
409 MAX_PAYLOAD(val & PCIEM_DEVCAP_MAX_PAYLOAD));
410 val = read_config(fd, &p->pc_sel, ptr + PCIER_LINKCAP, 4);
411 flags = read_config(fd, &p->pc_sel, ptr+ PCIER_LINKSTAT, 2);
412 printf(" link x%d(x%d)", (flags & PCIEM_LNKSTAT_WIDTH) >> 4,
413 (val & PCIEM_LNKCAP_MAXW_MASK) >> 4);
414 }
415
416 static void
417 cap_msix(int fd, struct pci_conf *p, uint8_t ptr)
418 {
419 uint32_t val;
420 uint16_t ctrl;
421 int msgnum, table_bar, pba_bar;
422
423 ctrl = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_CTRL, 2);
424 msgnum = (ctrl & PCIM_MSIXCTRL_TABLE_SIZE) + 1;
425 val = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_TABLE, 4);
426 table_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
427 val = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_PBA, 4);
428 pba_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
429 printf("MSI-X supports %d message%s ", msgnum,
430 (msgnum == 1) ? "" : "s");
431 if (table_bar == pba_bar)
432 printf("in map 0x%x", table_bar);
433 else
434 printf("in maps 0x%x and 0x%x", table_bar, pba_bar);
435 if (ctrl & PCIM_MSIXCTRL_MSIX_ENABLE)
436 printf(" enabled");
437 }
438
439 static void
440 cap_sata(__unused int fd, __unused struct pci_conf *p, __unused uint8_t ptr)
441 {
442
443 printf("SATA Index-Data Pair");
444 }
445
446 static void
447 cap_pciaf(int fd, struct pci_conf *p, uint8_t ptr)
448 {
449 uint8_t cap;
450
451 cap = read_config(fd, &p->pc_sel, ptr + PCIR_PCIAF_CAP, 1);
452 printf("PCI Advanced Features:%s%s",
453 cap & PCIM_PCIAFCAP_FLR ? " FLR" : "",
454 cap & PCIM_PCIAFCAP_TP ? " TP" : "");
455 }
456
457 void
458 list_caps(int fd, struct pci_conf *p)
459 {
460 int express;
461 uint16_t sta;
462 uint8_t ptr, cap;
463
464 /* Are capabilities present for this device? */
465 sta = read_config(fd, &p->pc_sel, PCIR_STATUS, 2);
466 if (!(sta & PCIM_STATUS_CAPPRESENT))
467 return;
468
469 switch (p->pc_hdr & PCIM_HDRTYPE) {
470 case PCIM_HDRTYPE_NORMAL:
471 case PCIM_HDRTYPE_BRIDGE:
472 ptr = PCIR_CAP_PTR;
473 break;
474 case PCIM_HDRTYPE_CARDBUS:
475 ptr = PCIR_CAP_PTR_2;
476 break;
477 default:
478 errx(1, "list_caps: bad header type");
479 }
480
481 /* Walk the capability list. */
482 express = 0;
483 ptr = read_config(fd, &p->pc_sel, ptr, 1);
484 while (ptr != 0 && ptr != 0xff) {
485 cap = read_config(fd, &p->pc_sel, ptr + PCICAP_ID, 1);
486 printf(" cap %02x[%02x] = ", cap, ptr);
487 switch (cap) {
488 case PCIY_PMG:
489 cap_power(fd, p, ptr);
490 break;
491 case PCIY_AGP:
492 cap_agp(fd, p, ptr);
493 break;
494 case PCIY_VPD:
495 cap_vpd(fd, p, ptr);
496 break;
497 case PCIY_MSI:
498 cap_msi(fd, p, ptr);
499 break;
500 case PCIY_PCIX:
501 cap_pcix(fd, p, ptr);
502 break;
503 case PCIY_HT:
504 cap_ht(fd, p, ptr);
505 break;
506 case PCIY_VENDOR:
507 cap_vendor(fd, p, ptr);
508 break;
509 case PCIY_DEBUG:
510 cap_debug(fd, p, ptr);
511 break;
512 case PCIY_SUBVENDOR:
513 cap_subvendor(fd, p, ptr);
514 break;
515 case PCIY_EXPRESS:
516 express = 1;
517 cap_express(fd, p, ptr);
518 break;
519 case PCIY_MSIX:
520 cap_msix(fd, p, ptr);
521 break;
522 case PCIY_SATA:
523 cap_sata(fd, p, ptr);
524 break;
525 case PCIY_PCIAF:
526 cap_pciaf(fd, p, ptr);
527 break;
528 default:
529 printf("unknown");
530 break;
531 }
532 printf("\n");
533 ptr = read_config(fd, &p->pc_sel, ptr + PCICAP_NEXTPTR, 1);
534 }
535
536 if (express)
537 list_ecaps(fd, p);
538 }
539
540 /* From <sys/systm.h>. */
541 static __inline uint32_t
542 bitcount32(uint32_t x)
543 {
544
545 x = (x & 0x55555555) + ((x & 0xaaaaaaaa) >> 1);
546 x = (x & 0x33333333) + ((x & 0xcccccccc) >> 2);
547 x = (x + (x >> 4)) & 0x0f0f0f0f;
548 x = (x + (x >> 8));
549 x = (x + (x >> 16)) & 0x000000ff;
550 return (x);
551 }
552
553 static void
554 ecap_aer(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
555 {
556 uint32_t sta, mask;
557
558 printf("AER %d", ver);
559 if (ver != 1)
560 return;
561 sta = read_config(fd, &p->pc_sel, ptr + PCIR_AER_UC_STATUS, 4);
562 mask = read_config(fd, &p->pc_sel, ptr + PCIR_AER_UC_SEVERITY, 4);
563 printf(" %d fatal", bitcount32(sta & mask));
564 printf(" %d non-fatal", bitcount32(sta & ~mask));
565 sta = read_config(fd, &p->pc_sel, ptr + PCIR_AER_COR_STATUS, 4);
566 printf(" %d corrected", bitcount32(sta));
567 }
568
569 static void
570 ecap_vc(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
571 {
572 uint32_t cap1;
573
574 printf("VC %d", ver);
575 if (ver != 1)
576 return;
577 cap1 = read_config(fd, &p->pc_sel, ptr + PCIR_VC_CAP1, 4);
578 printf(" max VC%d", cap1 & PCIM_VC_CAP1_EXT_COUNT);
579 if ((cap1 & PCIM_VC_CAP1_LOWPRI_EXT_COUNT) != 0)
580 printf(" lowpri VC0-VC%d",
581 (cap1 & PCIM_VC_CAP1_LOWPRI_EXT_COUNT) >> 4);
582 }
583
584 static void
585 ecap_sernum(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
586 {
587 uint32_t high, low;
588
589 printf("Serial %d", ver);
590 if (ver != 1)
591 return;
592 low = read_config(fd, &p->pc_sel, ptr + PCIR_SERIAL_LOW, 4);
593 high = read_config(fd, &p->pc_sel, ptr + PCIR_SERIAL_HIGH, 4);
594 printf(" %08x%08x", high, low);
595 }
596
597 static void
598 list_ecaps(int fd, struct pci_conf *p)
599 {
600 uint32_t ecap;
601 uint16_t ptr;
602
603 ptr = PCIR_EXTCAP;
604 ecap = read_config(fd, &p->pc_sel, ptr, 4);
605 if (ecap == 0xffffffff || ecap == 0)
606 return;
607 for (;;) {
608 printf("ecap %04x[%03x] = ", PCI_EXTCAP_ID(ecap), ptr);
609 switch (PCI_EXTCAP_ID(ecap)) {
610 case PCIZ_AER:
611 ecap_aer(fd, p, ptr, PCI_EXTCAP_VER(ecap));
612 break;
613 case PCIZ_VC:
614 ecap_vc(fd, p, ptr, PCI_EXTCAP_VER(ecap));
615 break;
616 case PCIZ_SERNUM:
617 ecap_sernum(fd, p, ptr, PCI_EXTCAP_VER(ecap));
618 break;
619 default:
620 printf("unknown %d", PCI_EXTCAP_VER(ecap));
621 break;
622 }
623 printf("\n");
624 ptr = PCI_EXTCAP_NEXTPTR(ecap);
625 if (ptr == 0)
626 break;
627 ecap = read_config(fd, &p->pc_sel, ptr, 4);
628 }
629 }
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