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 static const char *aspm_string(uint8_t aspm);
47 static int slot_power(uint32_t cap);
48
49 static void
cap_power(int fd,struct pci_conf * p,uint8_t ptr)50 cap_power(int fd, struct pci_conf *p, uint8_t ptr)
51 {
52 uint16_t cap, status;
53
54 cap = read_config(fd, &p->pc_sel, ptr + PCIR_POWER_CAP, 2);
55 status = read_config(fd, &p->pc_sel, ptr + PCIR_POWER_STATUS, 2);
56 printf("powerspec %d supports D0%s%s D3 current D%d",
57 cap & PCIM_PCAP_SPEC,
58 cap & PCIM_PCAP_D1SUPP ? " D1" : "",
59 cap & PCIM_PCAP_D2SUPP ? " D2" : "",
60 status & PCIM_PSTAT_DMASK);
61 }
62
63 static void
cap_agp(int fd,struct pci_conf * p,uint8_t ptr)64 cap_agp(int fd, struct pci_conf *p, uint8_t ptr)
65 {
66 uint32_t status, command;
67
68 status = read_config(fd, &p->pc_sel, ptr + AGP_STATUS, 4);
69 command = read_config(fd, &p->pc_sel, ptr + AGP_CAPID, 4);
70 printf("AGP ");
71 if (AGP_MODE_GET_MODE_3(status)) {
72 printf("v3 ");
73 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V3_RATE_8x)
74 printf("8x ");
75 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V3_RATE_4x)
76 printf("4x ");
77 } else {
78 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_4x)
79 printf("4x ");
80 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_2x)
81 printf("2x ");
82 if (AGP_MODE_GET_RATE(status) & AGP_MODE_V2_RATE_1x)
83 printf("1x ");
84 }
85 if (AGP_MODE_GET_SBA(status))
86 printf("SBA ");
87 if (AGP_MODE_GET_AGP(command)) {
88 printf("enabled at ");
89 if (AGP_MODE_GET_MODE_3(command)) {
90 printf("v3 ");
91 switch (AGP_MODE_GET_RATE(command)) {
92 case AGP_MODE_V3_RATE_8x:
93 printf("8x ");
94 break;
95 case AGP_MODE_V3_RATE_4x:
96 printf("4x ");
97 break;
98 }
99 } else
100 switch (AGP_MODE_GET_RATE(command)) {
101 case AGP_MODE_V2_RATE_4x:
102 printf("4x ");
103 break;
104 case AGP_MODE_V2_RATE_2x:
105 printf("2x ");
106 break;
107 case AGP_MODE_V2_RATE_1x:
108 printf("1x ");
109 break;
110 }
111 if (AGP_MODE_GET_SBA(command))
112 printf("SBA ");
113 } else
114 printf("disabled");
115 }
116
117 static void
cap_vpd(int fd __unused,struct pci_conf * p __unused,uint8_t ptr __unused)118 cap_vpd(int fd __unused, struct pci_conf *p __unused, uint8_t ptr __unused)
119 {
120
121 printf("VPD");
122 }
123
124 static void
cap_msi(int fd,struct pci_conf * p,uint8_t ptr)125 cap_msi(int fd, struct pci_conf *p, uint8_t ptr)
126 {
127 uint16_t ctrl;
128 int msgnum;
129
130 ctrl = read_config(fd, &p->pc_sel, ptr + PCIR_MSI_CTRL, 2);
131 msgnum = 1 << ((ctrl & PCIM_MSICTRL_MMC_MASK) >> 1);
132 printf("MSI supports %d message%s%s%s ", msgnum,
133 (msgnum == 1) ? "" : "s",
134 (ctrl & PCIM_MSICTRL_64BIT) ? ", 64 bit" : "",
135 (ctrl & PCIM_MSICTRL_VECTOR) ? ", vector masks" : "");
136 if (ctrl & PCIM_MSICTRL_MSI_ENABLE) {
137 msgnum = 1 << ((ctrl & PCIM_MSICTRL_MME_MASK) >> 4);
138 printf("enabled with %d message%s", msgnum,
139 (msgnum == 1) ? "" : "s");
140 }
141 }
142
143 static void
cap_pcix(int fd,struct pci_conf * p,uint8_t ptr)144 cap_pcix(int fd, struct pci_conf *p, uint8_t ptr)
145 {
146 uint32_t status;
147 int comma, max_splits = 0, max_burst_read = 0;
148
149 status = read_config(fd, &p->pc_sel, ptr + PCIXR_STATUS, 4);
150 printf("PCI-X ");
151 if (status & PCIXM_STATUS_64BIT)
152 printf("64-bit ");
153 if ((p->pc_hdr & PCIM_HDRTYPE) == 1)
154 printf("bridge ");
155 if ((p->pc_hdr & PCIM_HDRTYPE) != 1 || (status & (PCIXM_STATUS_133CAP |
156 PCIXM_STATUS_266CAP | PCIXM_STATUS_533CAP)) != 0)
157 printf("supports");
158 comma = 0;
159 if (status & PCIXM_STATUS_133CAP) {
160 printf("%s 133MHz", comma ? "," : "");
161 comma = 1;
162 }
163 if (status & PCIXM_STATUS_266CAP) {
164 printf("%s 266MHz", comma ? "," : "");
165 comma = 1;
166 }
167 if (status & PCIXM_STATUS_533CAP) {
168 printf("%s 533MHz", comma ? "," : "");
169 comma = 1;
170 }
171 if ((p->pc_hdr & PCIM_HDRTYPE) == 1)
172 return;
173 switch (status & PCIXM_STATUS_MAX_READ) {
174 case PCIXM_STATUS_MAX_READ_512:
175 max_burst_read = 512;
176 break;
177 case PCIXM_STATUS_MAX_READ_1024:
178 max_burst_read = 1024;
179 break;
180 case PCIXM_STATUS_MAX_READ_2048:
181 max_burst_read = 2048;
182 break;
183 case PCIXM_STATUS_MAX_READ_4096:
184 max_burst_read = 4096;
185 break;
186 }
187 switch (status & PCIXM_STATUS_MAX_SPLITS) {
188 case PCIXM_STATUS_MAX_SPLITS_1:
189 max_splits = 1;
190 break;
191 case PCIXM_STATUS_MAX_SPLITS_2:
192 max_splits = 2;
193 break;
194 case PCIXM_STATUS_MAX_SPLITS_3:
195 max_splits = 3;
196 break;
197 case PCIXM_STATUS_MAX_SPLITS_4:
198 max_splits = 4;
199 break;
200 case PCIXM_STATUS_MAX_SPLITS_8:
201 max_splits = 8;
202 break;
203 case PCIXM_STATUS_MAX_SPLITS_12:
204 max_splits = 12;
205 break;
206 case PCIXM_STATUS_MAX_SPLITS_16:
207 max_splits = 16;
208 break;
209 case PCIXM_STATUS_MAX_SPLITS_32:
210 max_splits = 32;
211 break;
212 }
213 printf("%s %d burst read, %d split transaction%s", comma ? "," : "",
214 max_burst_read, max_splits, max_splits == 1 ? "" : "s");
215 }
216
217 static void
cap_ht(int fd,struct pci_conf * p,uint8_t ptr)218 cap_ht(int fd, struct pci_conf *p, uint8_t ptr)
219 {
220 uint32_t reg;
221 uint16_t command;
222
223 command = read_config(fd, &p->pc_sel, ptr + PCIR_HT_COMMAND, 2);
224 printf("HT ");
225 if ((command & 0xe000) == PCIM_HTCAP_SLAVE)
226 printf("slave");
227 else if ((command & 0xe000) == PCIM_HTCAP_HOST)
228 printf("host");
229 else
230 switch (command & PCIM_HTCMD_CAP_MASK) {
231 case PCIM_HTCAP_SWITCH:
232 printf("switch");
233 break;
234 case PCIM_HTCAP_INTERRUPT:
235 printf("interrupt");
236 break;
237 case PCIM_HTCAP_REVISION_ID:
238 printf("revision ID");
239 break;
240 case PCIM_HTCAP_UNITID_CLUMPING:
241 printf("unit ID clumping");
242 break;
243 case PCIM_HTCAP_EXT_CONFIG_SPACE:
244 printf("extended config space");
245 break;
246 case PCIM_HTCAP_ADDRESS_MAPPING:
247 printf("address mapping");
248 break;
249 case PCIM_HTCAP_MSI_MAPPING:
250 printf("MSI %saddress window %s at 0x",
251 command & PCIM_HTCMD_MSI_FIXED ? "fixed " : "",
252 command & PCIM_HTCMD_MSI_ENABLE ? "enabled" :
253 "disabled");
254 if (command & PCIM_HTCMD_MSI_FIXED)
255 printf("fee00000");
256 else {
257 reg = read_config(fd, &p->pc_sel,
258 ptr + PCIR_HTMSI_ADDRESS_HI, 4);
259 if (reg != 0)
260 printf("%08x", reg);
261 reg = read_config(fd, &p->pc_sel,
262 ptr + PCIR_HTMSI_ADDRESS_LO, 4);
263 printf("%08x", reg);
264 }
265 break;
266 case PCIM_HTCAP_DIRECT_ROUTE:
267 printf("direct route");
268 break;
269 case PCIM_HTCAP_VCSET:
270 printf("VC set");
271 break;
272 case PCIM_HTCAP_RETRY_MODE:
273 printf("retry mode");
274 break;
275 case PCIM_HTCAP_X86_ENCODING:
276 printf("X86 encoding");
277 break;
278 default:
279 printf("unknown %02x", command);
280 break;
281 }
282 }
283
284 static void
cap_vendor(int fd,struct pci_conf * p,uint8_t ptr)285 cap_vendor(int fd, struct pci_conf *p, uint8_t ptr)
286 {
287 uint8_t length;
288
289 length = read_config(fd, &p->pc_sel, ptr + PCIR_VENDOR_LENGTH, 1);
290 printf("vendor (length %d)", length);
291 if (p->pc_vendor == 0x8086) {
292 /* Intel */
293 uint8_t version;
294
295 version = read_config(fd, &p->pc_sel, ptr + PCIR_VENDOR_DATA,
296 1);
297 printf(" Intel cap %d version %d", version >> 4, version & 0xf);
298 if (version >> 4 == 1 && length == 12) {
299 /* Feature Detection */
300 uint32_t fvec;
301 int comma;
302
303 comma = 0;
304 fvec = read_config(fd, &p->pc_sel, ptr +
305 PCIR_VENDOR_DATA + 5, 4);
306 printf("\n\t\t features:");
307 if (fvec & (1 << 0)) {
308 printf(" AMT");
309 comma = 1;
310 }
311 fvec = read_config(fd, &p->pc_sel, ptr +
312 PCIR_VENDOR_DATA + 1, 4);
313 if (fvec & (1 << 21)) {
314 printf("%s Quick Resume", comma ? "," : "");
315 comma = 1;
316 }
317 if (fvec & (1 << 18)) {
318 printf("%s SATA RAID-5", comma ? "," : "");
319 comma = 1;
320 }
321 if (fvec & (1 << 9)) {
322 printf("%s Mobile", comma ? "," : "");
323 comma = 1;
324 }
325 if (fvec & (1 << 7)) {
326 printf("%s 6 PCI-e x1 slots", comma ? "," : "");
327 comma = 1;
328 } else {
329 printf("%s 4 PCI-e x1 slots", comma ? "," : "");
330 comma = 1;
331 }
332 if (fvec & (1 << 5)) {
333 printf("%s SATA RAID-0/1/10", comma ? "," : "");
334 comma = 1;
335 }
336 if (fvec & (1 << 3)) {
337 printf("%s SATA AHCI", comma ? "," : "");
338 comma = 1;
339 }
340 }
341 }
342 }
343
344 static void
cap_debug(int fd,struct pci_conf * p,uint8_t ptr)345 cap_debug(int fd, struct pci_conf *p, uint8_t ptr)
346 {
347 uint16_t debug_port;
348
349 debug_port = read_config(fd, &p->pc_sel, ptr + PCIR_DEBUG_PORT, 2);
350 printf("EHCI Debug Port at offset 0x%x in map 0x%x", debug_port &
351 PCIM_DEBUG_PORT_OFFSET, PCIR_BAR(debug_port >> 13));
352 }
353
354 static void
cap_subvendor(int fd,struct pci_conf * p,uint8_t ptr)355 cap_subvendor(int fd, struct pci_conf *p, uint8_t ptr)
356 {
357 uint32_t id;
358
359 id = read_config(fd, &p->pc_sel, ptr + PCIR_SUBVENDCAP_ID, 4);
360 printf("PCI Bridge card=0x%08x", id);
361 }
362
363 #define MAX_PAYLOAD(field) (128 << (field))
364
365 static void
cap_express(int fd,struct pci_conf * p,uint8_t ptr)366 cap_express(int fd, struct pci_conf *p, uint8_t ptr)
367 {
368 uint32_t cap;
369 uint16_t ctl, flags, sta;
370 unsigned int version;
371
372 flags = read_config(fd, &p->pc_sel, ptr + PCIER_CAPABILITY, 2);
373 version = flags & PCIEM_CAP_VER_MASK;
374 printf("PCI-Express %u ", version);
375 switch (flags & PCIEM_CAP_PORT_TYPE) {
376 case PCIE_END_POINT:
377 printf("endpoint");
378 break;
379 case PCIE_LEG_END_POINT:
380 printf("legacy endpoint");
381 break;
382 case PCIE_ROOT_PORT:
383 printf("root port");
384 break;
385 case PCIE_UP_STREAM_PORT:
386 printf("upstream port");
387 break;
388 case PCIE_DOWN_STREAM_PORT:
389 printf("downstream port");
390 break;
391 case PCIE_PCIE2PCI_BRIDGE:
392 printf("PCI bridge");
393 break;
394 case PCIE_PCI2PCIE_BRIDGE:
395 printf("PCI to PCIe bridge");
396 break;
397 case PCIE_ROOT_END_POINT:
398 printf("root endpoint");
399 break;
400 case PCIE_ROOT_EVT_COLL:
401 printf("event collector");
402 break;
403 default:
404 printf("type %d", (flags & PCIEM_CAP_PORT_TYPE) >> 8);
405 break;
406 }
407 if (flags & PCIEM_CAP_IRQ_MSGNO)
408 printf(" IRQ %d", (flags & PCIEM_CAP_IRQ_MSGNO) >> 8);
409 cap = read_config(fd, &p->pc_sel, ptr + PCIER_DEVCAP, 4);
410 ctl = read_config(fd, &p->pc_sel, ptr + PCIER_DEVCTRL, 2);
411 printf(" max data %d(%d)",
412 MAX_PAYLOAD((ctl & PCIEM_DEVCAP_MAX_PAYLOAD) >> 5),
413 MAX_PAYLOAD(cap & PCIEM_DEVCAP_MAX_PAYLOAD));
414 if ((cap & PCIEM_CAP_FLR) != 0)
415 printf(" FLR");
416 if (ctl & PCIEM_DEVCTL_RELAX_ORDER)
417 printf(" RO");
418 if (ctl & PCIEM_DEVCTL_NOSNOOP)
419 printf(" NS");
420 if (ctl & PCIEM_DEVCTL_COR_ENABLE)
421 printf(" COR");
422 if (ctl & PCIEM_DEVCTL_NFER_ENABLE)
423 printf(" NFER");
424 if (ctl & PCIEM_DEVCTL_FER_ENABLE)
425 printf(" FER");
426 if (ctl & PCIEM_DEVCTL_URR_ENABLE)
427 printf(" URR");
428 if (version >= 2) {
429 cap = read_config(fd, &p->pc_sel, ptr + PCIER_DEVCAP2, 4);
430 if ((cap & PCIEM_DEVCAP2_ALT_RID_SUPP) != 0) {
431 ctl = read_config(fd, &p->pc_sel,
432 ptr + PCIER_DEVCTRL2, 4);
433 printf(" ARI %s",
434 (ctl & PCIEM_DEVCTL2_ALT_RID_ENABLE) ?
435 "enabled" : "disabled");
436
437 }
438 if ((cap & PCIEM_DEVCAP2_LTR_SUPP) != 0) {
439 printf(" LTR %s",
440 (ctl & PCIEM_DEVCTL2_LTR_ENABLE) ?
441 "enabled" : "disabled");
442 }
443 }
444
445 cap = read_config(fd, &p->pc_sel, ptr + PCIER_LINKCAP, 4);
446 sta = read_config(fd, &p->pc_sel, ptr+ PCIER_LINKSTAT, 2);
447 if (cap || sta) {
448 printf(" link x%d(x%d)", (sta & PCIEM_LNKSTAT_WIDTH) >> 4,
449 (cap & PCIEM_LNKCAP_MAXW_MASK) >> 4);
450 }
451 if (cap & PCIEM_LNKCAP_ASPM_MASK) {
452 ctl = read_config(fd, &p->pc_sel, ptr + PCIER_LINKCTRL, 2);
453 printf(" ASPM %s(%s)",
454 aspm_string(ctl & PCIEM_LNKCTL_ASPM_MASK),
455 aspm_string((cap & PCIEM_LNKCAP_ASPM_MASK) >> 10));
456 }
457 if (flags & PCIEM_CAP_SLOT_IMPL) {
458 cap = read_config(fd, &p->pc_sel, ptr + PCIER_SLOTCAP, 4);
459 sta = read_config(fd, &p->pc_sel, ptr + PCIER_SLOTSTA, 2);
460 ctl = read_config(fd, &p->pc_sel, ptr + PCIER_SLOTCTL, 2);
461 printf("\n ");
462 printf(" slot %d", (cap & PCIEM_SLOTCAP_PSN) >> 19);
463 printf(" power limit %d mW", slot_power(cap));
464 if (cap & PCIEM_SLOTCAP_HP_CAP)
465 printf(" HotPlug(%s)", sta & PCIEM_SLOTSTA_PDS ?
466 "present" : "empty");
467 if (cap & PCIEM_SLOTCAP_HP_SURP)
468 printf(" surprise");
469 if (cap & PCIEM_SLOTCAP_ATTEN_BTN)
470 printf(" Attn Button");
471 if (cap & PCIEM_SLOTCAP_PWR_CTRL)
472 printf(" PC(%s)", ctl & PCIEM_SLOTCTL_PCC ?
473 "off" : "on");
474 if (cap & PCIEM_SLOTCAP_MRL_SNS)
475 printf(" MRL(%s)", sta & PCIEM_SLOTSTA_MRLSS ?
476 "open" : "closed");
477 if (cap & PCIEM_SLOTCAP_EIP)
478 printf(" EI(%s)", sta & PCIEM_SLOTSTA_EIS ?
479 "engaged" : "disengaged");
480 }
481 }
482
483 static void
cap_msix(int fd,struct pci_conf * p,uint8_t ptr)484 cap_msix(int fd, struct pci_conf *p, uint8_t ptr)
485 {
486 uint32_t val;
487 uint16_t ctrl;
488 int msgnum, table_bar, pba_bar;
489
490 ctrl = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_CTRL, 2);
491 msgnum = (ctrl & PCIM_MSIXCTRL_TABLE_SIZE) + 1;
492 val = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_TABLE, 4);
493 table_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
494 val = read_config(fd, &p->pc_sel, ptr + PCIR_MSIX_PBA, 4);
495 pba_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
496 printf("MSI-X supports %d message%s ", msgnum,
497 (msgnum == 1) ? "" : "s");
498 if (table_bar == pba_bar)
499 printf("in map 0x%x", table_bar);
500 else
501 printf("in maps 0x%x and 0x%x", table_bar, pba_bar);
502 if (ctrl & PCIM_MSIXCTRL_MSIX_ENABLE)
503 printf(" enabled");
504 }
505
506 static void
cap_sata(__unused int fd,__unused struct pci_conf * p,__unused uint8_t ptr)507 cap_sata(__unused int fd, __unused struct pci_conf *p, __unused uint8_t ptr)
508 {
509
510 printf("SATA Index-Data Pair");
511 }
512
513 static void
cap_pciaf(int fd,struct pci_conf * p,uint8_t ptr)514 cap_pciaf(int fd, struct pci_conf *p, uint8_t ptr)
515 {
516 uint8_t cap;
517
518 cap = read_config(fd, &p->pc_sel, ptr + PCIR_PCIAF_CAP, 1);
519 printf("PCI Advanced Features:%s%s",
520 cap & PCIM_PCIAFCAP_FLR ? " FLR" : "",
521 cap & PCIM_PCIAFCAP_TP ? " TP" : "");
522 }
523
524 void
list_caps(int fd,struct pci_conf * p)525 list_caps(int fd, struct pci_conf *p)
526 {
527 int express;
528 uint16_t sta;
529 uint8_t ptr, cap;
530
531 /* Are capabilities present for this device? */
532 sta = read_config(fd, &p->pc_sel, PCIR_STATUS, 2);
533 if (!(sta & PCIM_STATUS_CAPPRESENT))
534 return;
535
536 switch (p->pc_hdr & PCIM_HDRTYPE) {
537 case PCIM_HDRTYPE_NORMAL:
538 case PCIM_HDRTYPE_BRIDGE:
539 ptr = PCIR_CAP_PTR;
540 break;
541 case PCIM_HDRTYPE_CARDBUS:
542 ptr = PCIR_CAP_PTR_2;
543 break;
544 default:
545 errx(1, "list_caps: bad header type");
546 }
547
548 /* Walk the capability list. */
549 express = 0;
550 ptr = read_config(fd, &p->pc_sel, ptr, 1);
551 while (ptr != 0 && ptr != 0xff) {
552 cap = read_config(fd, &p->pc_sel, ptr + PCICAP_ID, 1);
553 printf(" cap %02x[%02x] = ", cap, ptr);
554 switch (cap) {
555 case PCIY_PMG:
556 cap_power(fd, p, ptr);
557 break;
558 case PCIY_AGP:
559 cap_agp(fd, p, ptr);
560 break;
561 case PCIY_VPD:
562 cap_vpd(fd, p, ptr);
563 break;
564 case PCIY_MSI:
565 cap_msi(fd, p, ptr);
566 break;
567 case PCIY_PCIX:
568 cap_pcix(fd, p, ptr);
569 break;
570 case PCIY_HT:
571 cap_ht(fd, p, ptr);
572 break;
573 case PCIY_VENDOR:
574 cap_vendor(fd, p, ptr);
575 break;
576 case PCIY_DEBUG:
577 cap_debug(fd, p, ptr);
578 break;
579 case PCIY_SUBVENDOR:
580 cap_subvendor(fd, p, ptr);
581 break;
582 case PCIY_EXPRESS:
583 express = 1;
584 cap_express(fd, p, ptr);
585 break;
586 case PCIY_MSIX:
587 cap_msix(fd, p, ptr);
588 break;
589 case PCIY_SATA:
590 cap_sata(fd, p, ptr);
591 break;
592 case PCIY_PCIAF:
593 cap_pciaf(fd, p, ptr);
594 break;
595 default:
596 printf("unknown");
597 break;
598 }
599 printf("\n");
600 ptr = read_config(fd, &p->pc_sel, ptr + PCICAP_NEXTPTR, 1);
601 }
602
603 if (express)
604 list_ecaps(fd, p);
605 }
606
607 /* From <sys/systm.h>. */
608 static __inline uint32_t
bitcount32(uint32_t x)609 bitcount32(uint32_t x)
610 {
611
612 x = (x & 0x55555555) + ((x & 0xaaaaaaaa) >> 1);
613 x = (x & 0x33333333) + ((x & 0xcccccccc) >> 2);
614 x = (x + (x >> 4)) & 0x0f0f0f0f;
615 x = (x + (x >> 8));
616 x = (x + (x >> 16)) & 0x000000ff;
617 return (x);
618 }
619
620 static void
ecap_aer(int fd,struct pci_conf * p,uint16_t ptr,uint8_t ver)621 ecap_aer(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
622 {
623 uint32_t sta, mask;
624
625 printf("AER %d", ver);
626 if (ver < 1)
627 return;
628 sta = read_config(fd, &p->pc_sel, ptr + PCIR_AER_UC_STATUS, 4);
629 mask = read_config(fd, &p->pc_sel, ptr + PCIR_AER_UC_SEVERITY, 4);
630 printf(" %d fatal", bitcount32(sta & mask));
631 printf(" %d non-fatal", bitcount32(sta & ~mask));
632 sta = read_config(fd, &p->pc_sel, ptr + PCIR_AER_COR_STATUS, 4);
633 printf(" %d corrected", bitcount32(sta));
634 }
635
636 static void
ecap_vc(int fd,struct pci_conf * p,uint16_t ptr,uint8_t ver)637 ecap_vc(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
638 {
639 uint32_t cap1;
640
641 printf("VC %d", ver);
642 if (ver != 1)
643 return;
644 cap1 = read_config(fd, &p->pc_sel, ptr + PCIR_VC_CAP1, 4);
645 printf(" max VC%d", cap1 & PCIM_VC_CAP1_EXT_COUNT);
646 if ((cap1 & PCIM_VC_CAP1_LOWPRI_EXT_COUNT) != 0)
647 printf(" lowpri VC0-VC%d",
648 (cap1 & PCIM_VC_CAP1_LOWPRI_EXT_COUNT) >> 4);
649 }
650
651 static void
ecap_sernum(int fd,struct pci_conf * p,uint16_t ptr,uint8_t ver)652 ecap_sernum(int fd, struct pci_conf *p, uint16_t ptr, uint8_t ver)
653 {
654 uint32_t high, low;
655
656 printf("Serial %d", ver);
657 if (ver != 1)
658 return;
659 low = read_config(fd, &p->pc_sel, ptr + PCIR_SERIAL_LOW, 4);
660 high = read_config(fd, &p->pc_sel, ptr + PCIR_SERIAL_HIGH, 4);
661 printf(" %08x%08x", high, low);
662 }
663
664 static void
list_ecaps(int fd,struct pci_conf * p)665 list_ecaps(int fd, struct pci_conf *p)
666 {
667 uint32_t ecap;
668 uint16_t ptr;
669
670 ptr = PCIR_EXTCAP;
671 ecap = read_config(fd, &p->pc_sel, ptr, 4);
672 if (ecap == 0xffffffff || ecap == 0)
673 return;
674 for (;;) {
675 printf("ecap %04x[%03x] = ", PCI_EXTCAP_ID(ecap), ptr);
676 switch (PCI_EXTCAP_ID(ecap)) {
677 case PCIZ_AER:
678 ecap_aer(fd, p, ptr, PCI_EXTCAP_VER(ecap));
679 break;
680 case PCIZ_VC:
681 ecap_vc(fd, p, ptr, PCI_EXTCAP_VER(ecap));
682 break;
683 case PCIZ_SERNUM:
684 ecap_sernum(fd, p, ptr, PCI_EXTCAP_VER(ecap));
685 break;
686 default:
687 printf("unknown %d", PCI_EXTCAP_VER(ecap));
688 break;
689 }
690 printf("\n");
691 ptr = PCI_EXTCAP_NEXTPTR(ecap);
692 if (ptr == 0)
693 break;
694 ecap = read_config(fd, &p->pc_sel, ptr, 4);
695 }
696 }
697
698 static const char *
aspm_string(uint8_t aspm)699 aspm_string(uint8_t aspm)
700 {
701 switch (aspm) {
702 case 1:
703 return("L0s");
704 case 2:
705 return("L1");
706 case 3:
707 return("L0s/L1");
708 default:
709 return("disabled");
710 }
711 }
712
713 static int
slot_power(uint32_t cap)714 slot_power(uint32_t cap)
715 {
716 int mwatts;
717
718 mwatts = (cap & PCIEM_SLOTCAP_SPLV) >> 7;
719
720 switch (cap & PCIEM_SLOTCAP_SPLS) {
721 case 0x0:
722 mwatts *= 10;
723 /* fallthrough */
724 case 0x1:
725 mwatts *= 10;
726 /* fallthrough */
727 case 0x2:
728 mwatts *= 10;
729 /* fallthrough */
730 default:
731 break;
732 }
733 return mwatts;
734 }
735
736 uint8_t
pci_find_cap(int fd,struct pci_conf * p,uint8_t id)737 pci_find_cap(int fd, struct pci_conf *p, uint8_t id)
738 {
739 uint16_t sta;
740 uint8_t ptr, cap;
741
742 /* Are capabilities present for this device? */
743 sta = read_config(fd, &p->pc_sel, PCIR_STATUS, 2);
744 if (!(sta & PCIM_STATUS_CAPPRESENT))
745 return (0);
746
747 switch (p->pc_hdr & PCIM_HDRTYPE) {
748 case PCIM_HDRTYPE_NORMAL:
749 case PCIM_HDRTYPE_BRIDGE:
750 ptr = PCIR_CAP_PTR;
751 break;
752 case PCIM_HDRTYPE_CARDBUS:
753 ptr = PCIR_CAP_PTR_2;
754 break;
755 default:
756 return (0);
757 }
758
759 ptr = read_config(fd, &p->pc_sel, ptr, 1);
760 while (ptr != 0 && ptr != 0xff) {
761 cap = read_config(fd, &p->pc_sel, ptr + PCICAP_ID, 1);
762 if (cap == id)
763 return (ptr);
764 ptr = read_config(fd, &p->pc_sel, ptr + PCICAP_NEXTPTR, 1);
765 }
766 return (0);
767 }
768
769 /* Find offset of a specific extended capability. Returns 0 on failure. */
770 uint16_t
pcie_find_cap(int fd,struct pci_conf * p,uint16_t id)771 pcie_find_cap(int fd, struct pci_conf *p, uint16_t id)
772 {
773 uint32_t ecap;
774 uint16_t ptr;
775
776 ptr = PCIR_EXTCAP;
777 ecap = read_config(fd, &p->pc_sel, ptr, 4);
778 if (ecap == 0xffffffff || ecap == 0)
779 return (0);
780 for (;;) {
781 if (PCI_EXTCAP_ID(ecap) == id)
782 return (ptr);
783 ptr = PCI_EXTCAP_NEXTPTR(ecap);
784 if (ptr == 0)
785 break;
786 ecap = read_config(fd, &p->pc_sel, ptr, 4);
787 }
788 return (0);
789 }
790