2 * $Id: lspci.c,v 1.17 1998/11/18 14:06:07 mj Exp $
4 * Linux PCI Utilities -- List All PCI Devices
6 * Copyright (c) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
8 * Can be freely distributed and used under the terms of the GNU GPL.
21 static int verbose; /* Show detailed information */
22 static int buscentric_view; /* Show bus addresses/IRQ's instead of CPU-visible ones */
23 static int show_hex; /* Show contents of config space as hexadecimal numbers */
24 static struct pci_filter filter; /* Device filter */
25 static int show_tree; /* Show bus tree */
26 static int machine_readable; /* Generate machine-readable output */
27 static char *pci_dir = PROC_BUS_PCI;
29 static char options[] = "nvbxs:d:ti:p:m";
31 static char help_msg[] = "\
32 Usage: lspci [<switches>]\n\
35 -n\t\tShow numeric ID's\n\
36 -b\t\tBus-centric view (PCI addresses and IRQ's instead of those seen by the CPU)\n\
37 -x\t\tShow hex-dump of config space\n\
38 -s [[<bus>]:][<slot>][.[<func>]]\tShow only devices in selected slots\n\
39 -d [<vendor>]:[<device>]\tShow only selected devices\n\
40 -t\t\tShow bus tree\n\
41 -m\t\tProduce machine-readable output\n\
42 -i <file>\tUse specified ID database instead of " ETC_PCI_IDS "\n\
43 -p <dir>\tUse specified bus directory instead of " PROC_BUS_PCI "\n\
46 /* Format strings used for IRQ numbers */
49 #define IRQ_FORMAT "%08x"
51 #define IRQ_FORMAT "%d"
54 /* Our view of the PCI bus */
60 unsigned int kernel_irq;
61 unsigned long kernel_base_addr[6], kernel_rom_base_addr;
65 static struct device *first_dev, **last_dev = &first_dev;
67 /* Miscellaneous routines */
70 xmalloc(unsigned int howmuch)
72 void *p = malloc(howmuch);
75 fprintf(stderr, "lspci: Unable to allocate %d bytes of memory\n", howmuch);
81 /* Interface for /proc/bus/pci */
90 sprintf(name, "%s/devices", pci_dir);
91 if (! (f = fopen(name, "r")))
96 while (fgets(line, sizeof(line), f))
98 struct device *d = xmalloc(sizeof(struct device));
99 unsigned int dfn, vend;
101 bzero(d, sizeof(*d));
102 sscanf(line, "%x %x %x %lx %lx %lx %lx %lx %lx %lx",
106 &d->kernel_base_addr[0],
107 &d->kernel_base_addr[1],
108 &d->kernel_base_addr[2],
109 &d->kernel_base_addr[3],
110 &d->kernel_base_addr[4],
111 &d->kernel_base_addr[5],
112 &d->kernel_rom_base_addr);
114 d->devfn = dfn & 0xff;
115 d->vendid = vend >> 16U;
116 d->devid = vend & 0xffff;
117 if (filter_match(&filter, d->bus, d->devfn, d->vendid, d->devid))
128 make_proc_pci_name(struct device *d, char *p)
130 sprintf(p, "%s/%02x/%02x.%x",
131 pci_dir, d->bus, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
140 int how_much = (show_hex > 2) ? 256 : 64;
142 for(d=first_dev; d; d=d->next)
144 make_proc_pci_name(d, name);
145 if ((fd = open(name, O_RDONLY)) < 0)
147 fprintf(stderr, "lspci: Unable to open %s: %m\n", name);
150 res = read(fd, d->config, how_much);
153 fprintf(stderr, "lspci: Error reading %s: %m\n", name);
158 fprintf(stderr, "lspci: Only %d bytes of config space available to you\n", res);
172 /* Config space accesses */
175 get_conf_byte(struct device *d, unsigned int pos)
177 return d->config[pos];
181 get_conf_word(struct device *d, unsigned int pos)
183 return d->config[pos] | (d->config[pos+1] << 8);
187 get_conf_long(struct device *d, unsigned int pos)
189 return d->config[pos] |
190 (d->config[pos+1] << 8) |
191 (d->config[pos+2] << 16) |
192 (d->config[pos+3] << 24);
198 compare_them(const void *A, const void *B)
200 const struct device *a = *(const struct device **)A;
201 const struct device *b = *(const struct device **)B;
207 if (a->devfn < b->devfn)
209 if (a->devfn > b->devfn)
217 struct device **index, **h;
222 for(d=first_dev; d; d=d->next)
224 h = index = alloca(sizeof(struct device *) * cnt);
225 for(d=first_dev; d; d=d->next)
227 qsort(index, cnt, sizeof(struct device *), compare_them);
228 last_dev = &first_dev;
233 last_dev = &(*h)->next;
242 show_terse(struct device *d)
246 printf("%02x:%02x.%x %s: %s",
250 lookup_class(get_conf_word(d, PCI_CLASS_DEVICE)),
251 lookup_device_full(d->vendid, d->devid));
252 if (c = get_conf_byte(d, PCI_REVISION_ID))
253 printf(" (rev %02x)", c);
254 if (verbose && (c = get_conf_byte(d, PCI_CLASS_PROG)))
255 printf(" (prog-if %02x)", c);
260 show_bases(struct device *d, int cnt)
262 word cmd = get_conf_word(d, PCI_COMMAND);
268 unsigned int flg = get_conf_long(d, PCI_BASE_ADDRESS_0 + 4*i);
273 pos = d->kernel_base_addr[i];
277 if (pos == 0xffffffff)
280 printf("\tRegion %d: ", i);
283 if (flg & PCI_BASE_ADDRESS_SPACE_IO)
285 unsigned long a = pos & PCI_BASE_ADDRESS_IO_MASK;
286 printf("I/O ports at ");
290 printf("<unassigned>");
291 if (!(cmd & PCI_COMMAND_IO))
292 printf(" [disabled]");
296 int t = flg & PCI_BASE_ADDRESS_MEM_TYPE_MASK;
297 unsigned long a = pos & PCI_BASE_ADDRESS_MEM_MASK;
299 printf("Memory at ");
300 if (t == PCI_BASE_ADDRESS_MEM_TYPE_64)
306 z = get_conf_long(d, PCI_BASE_ADDRESS_0 + 4*i);
321 printf("<unassigned>");
322 printf(" (%s, %sprefetchable)",
323 (t == PCI_BASE_ADDRESS_MEM_TYPE_32) ? "32-bit" :
324 (t == PCI_BASE_ADDRESS_MEM_TYPE_64) ? "64-bit" :
325 (t == PCI_BASE_ADDRESS_MEM_TYPE_1M) ? "low-1M" : "type 3",
326 (flg & PCI_BASE_ADDRESS_MEM_PREFETCH) ? "" : "non-");
327 if (!(cmd & PCI_COMMAND_MEMORY))
328 printf(" [disabled]");
335 show_htype0(struct device *d)
337 unsigned long rom = buscentric_view ? get_conf_long(d, PCI_ROM_ADDRESS) : d->kernel_rom_base_addr;
342 printf("\tExpansion ROM at %08lx%s\n", rom & PCI_ROM_ADDRESS_MASK,
343 (rom & PCI_ROM_ADDRESS_ENABLE) ? "" : " [disabled]");
347 show_htype1(struct device *d)
349 u32 io_base = get_conf_byte(d, PCI_IO_BASE);
350 u32 io_limit = get_conf_byte(d, PCI_IO_LIMIT);
351 u32 io_type = io_base & PCI_IO_RANGE_TYPE_MASK;
352 u32 mem_base = get_conf_word(d, PCI_MEMORY_BASE);
353 u32 mem_limit = get_conf_word(d, PCI_MEMORY_LIMIT);
354 u32 mem_type = mem_base & PCI_MEMORY_RANGE_TYPE_MASK;
355 u32 pref_base = get_conf_word(d, PCI_PREF_MEMORY_BASE);
356 u32 pref_limit = get_conf_word(d, PCI_PREF_MEMORY_LIMIT);
357 u32 pref_type = pref_base & PCI_PREF_RANGE_TYPE_MASK;
358 unsigned long rom = buscentric_view ? get_conf_long(d, PCI_ROM_ADDRESS) : d->kernel_rom_base_addr;
359 word brc = get_conf_word(d, PCI_BRIDGE_CONTROL);
362 printf("\tBus: primary=%02x, secondary=%02x, subordinate=%02x, sec-latency=%d\n",
363 get_conf_byte(d, PCI_PRIMARY_BUS),
364 get_conf_byte(d, PCI_SECONDARY_BUS),
365 get_conf_byte(d, PCI_SUBORDINATE_BUS),
366 get_conf_byte(d, PCI_SEC_LATENCY_TIMER));
368 if (io_type != (io_limit & PCI_IO_RANGE_TYPE_MASK) ||
369 (io_type != PCI_IO_RANGE_TYPE_16 && io_type != PCI_IO_RANGE_TYPE_32))
370 printf("\t!!! Unknown I/O range types %x/%x\n", io_base, io_limit);
373 io_base = (io_base & PCI_IO_RANGE_MASK) << 8;
374 io_limit = (io_limit & PCI_IO_RANGE_MASK) << 8;
375 if (io_type == PCI_IO_RANGE_TYPE_32)
377 io_base |= (get_conf_word(d, PCI_IO_BASE_UPPER16) << 16);
378 io_limit |= (get_conf_word(d, PCI_IO_LIMIT_UPPER16) << 16);
381 printf("\tI/O behind bridge: %08x-%08x\n", io_base, io_limit+0xfff);
384 if (mem_type != (mem_limit & PCI_MEMORY_RANGE_TYPE_MASK) ||
386 printf("\t!!! Unknown memory range types %x/%x\n", mem_base, mem_limit);
389 mem_base = (mem_base & PCI_MEMORY_RANGE_MASK) << 16;
390 mem_limit = (mem_limit & PCI_MEMORY_RANGE_MASK) << 16;
391 printf("\tMemory behind bridge: %08x-%08x\n", mem_base, mem_limit + 0xfffff);
394 if (pref_type != (pref_limit & PCI_PREF_RANGE_TYPE_MASK) ||
395 (pref_type != PCI_PREF_RANGE_TYPE_32 && pref_type != PCI_PREF_RANGE_TYPE_64))
396 printf("\t!!! Unknown prefetchable memory range types %x/%x\n", pref_base, pref_limit);
399 pref_base = (pref_base & PCI_PREF_RANGE_MASK) << 16;
400 pref_limit = (pref_limit & PCI_PREF_RANGE_MASK) << 16;
401 if (pref_type == PCI_PREF_RANGE_TYPE_32)
402 printf("\tPrefetchable memory behind bridge: %08x-%08x\n", pref_base, pref_limit + 0xfffff);
404 printf("\tPrefetchable memory behind bridge: %08x%08x-%08x%08x\n",
405 get_conf_long(d, PCI_PREF_BASE_UPPER32),
407 get_conf_long(d, PCI_PREF_LIMIT_UPPER32),
411 if (get_conf_word(d, PCI_SEC_STATUS) & PCI_STATUS_SIG_SYSTEM_ERROR)
412 printf("\tSecondary status: SERR\n");
415 printf("\tExpansion ROM at %08lx%s\n", rom & PCI_ROM_ADDRESS_MASK,
416 (rom & PCI_ROM_ADDRESS_ENABLE) ? "" : " [disabled]");
419 printf("\tBridgeCtl: Parity%c SERR%c NoISA%c VGA%c MAbort%c >Reset%c FastB2B%c\n",
420 (brc & PCI_BRIDGE_CTL_PARITY) ? '+' : '-',
421 (brc & PCI_BRIDGE_CTL_SERR) ? '+' : '-',
422 (brc & PCI_BRIDGE_CTL_NO_ISA) ? '+' : '-',
423 (brc & PCI_BRIDGE_CTL_VGA) ? '+' : '-',
424 (brc & PCI_BRIDGE_CTL_MASTER_ABORT) ? '+' : '-',
425 (brc & PCI_BRIDGE_CTL_BUS_RESET) ? '+' : '-',
426 (brc & PCI_BRIDGE_CTL_FAST_BACK) ? '+' : '-');
430 show_htype2(struct device *d)
433 word cmd = get_conf_word(d, PCI_COMMAND);
434 word brc = get_conf_word(d, PCI_CB_BRIDGE_CONTROL);
435 word exca = get_conf_word(d, PCI_CB_LEGACY_MODE_BASE);
438 printf("\tBus: primary=%02x, secondary=%02x, subordinate=%02x, sec-latency=%d\n",
439 get_conf_byte(d, PCI_CB_PRIMARY_BUS),
440 get_conf_byte(d, PCI_CB_CARD_BUS),
441 get_conf_byte(d, PCI_CB_SUBORDINATE_BUS),
442 get_conf_byte(d, PCI_CB_LATENCY_TIMER));
446 u32 base = get_conf_long(d, PCI_CB_MEMORY_BASE_0 + p);
447 u32 limit = get_conf_long(d, PCI_CB_MEMORY_LIMIT_0 + p);
449 printf("Memory window %d: %08x-%08x%s%s\n", i, base, limit,
450 (cmd & PCI_COMMAND_MEMORY) ? "" : " [disabled]",
451 (brc & (PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 << i)) ? " (prefetchable)" : "");
456 u32 base = get_conf_long(d, PCI_CB_IO_BASE_0 + p);
457 u32 limit = get_conf_long(d, PCI_CB_IO_LIMIT_0 + p);
458 if (!(base & PCI_IO_RANGE_TYPE_32))
463 base &= PCI_CB_IO_RANGE_MASK;
466 limit = (limit & PCI_CB_IO_RANGE_MASK) + 3;
467 printf("I/O window %d: %08x-%08x%s\n", i, base, limit,
468 (cmd & PCI_COMMAND_IO) ? "" : " [disabled]");
471 if (get_conf_word(d, PCI_CB_SEC_STATUS) & PCI_STATUS_SIG_SYSTEM_ERROR)
472 printf("\tSecondary status: SERR\n");
474 printf("\tBridgeCtl: Parity%c SERR%c ISA%c VGA%c MAbort%c >Reset%c 16bInt%c PostWrite%c\n",
475 (brc & PCI_CB_BRIDGE_CTL_PARITY) ? '+' : '-',
476 (brc & PCI_CB_BRIDGE_CTL_SERR) ? '+' : '-',
477 (brc & PCI_CB_BRIDGE_CTL_ISA) ? '+' : '-',
478 (brc & PCI_CB_BRIDGE_CTL_VGA) ? '+' : '-',
479 (brc & PCI_CB_BRIDGE_CTL_MASTER_ABORT) ? '+' : '-',
480 (brc & PCI_CB_BRIDGE_CTL_CB_RESET) ? '+' : '-',
481 (brc & PCI_CB_BRIDGE_CTL_16BIT_INT) ? '+' : '-',
482 (brc & PCI_CB_BRIDGE_CTL_POST_WRITES) ? '+' : '-');
484 printf("\t16-bit legacy interface ports at %04x\n", exca);
488 show_verbose(struct device *d)
490 word status = get_conf_word(d, PCI_STATUS);
491 word cmd = get_conf_word(d, PCI_COMMAND);
492 word class = get_conf_word(d, PCI_CLASS_DEVICE);
493 byte bist = get_conf_byte(d, PCI_BIST);
494 byte htype = get_conf_byte(d, PCI_HEADER_TYPE) & 0x7f;
495 byte latency = get_conf_byte(d, PCI_LATENCY_TIMER);
496 byte cache_line = get_conf_byte(d, PCI_CACHE_LINE_SIZE);
497 byte max_lat, min_gnt;
498 byte int_pin = get_conf_byte(d, PCI_INTERRUPT_PIN);
499 byte int_line = get_conf_byte(d, PCI_INTERRUPT_LINE);
501 word subsys_v, subsys_d;
507 case PCI_HEADER_TYPE_NORMAL:
508 if (class == PCI_CLASS_BRIDGE_PCI)
511 printf("\t!!! Header type %02x doesn't match class code %04x\n", htype, class);
514 max_lat = get_conf_byte(d, PCI_MAX_LAT);
515 min_gnt = get_conf_byte(d, PCI_MIN_GNT);
516 subsys_v = get_conf_word(d, PCI_SUBSYSTEM_VENDOR_ID);
517 subsys_d = get_conf_word(d, PCI_SUBSYSTEM_ID);
519 case PCI_HEADER_TYPE_BRIDGE:
520 if (class != PCI_CLASS_BRIDGE_PCI)
522 irq = int_line = int_pin = min_gnt = max_lat = 0;
523 subsys_v = subsys_d = 0;
525 case PCI_HEADER_TYPE_CARDBUS:
526 if ((class >> 8) != PCI_BASE_CLASS_BRIDGE)
528 min_gnt = max_lat = 0;
529 subsys_v = get_conf_word(d, PCI_CB_SUBSYSTEM_VENDOR_ID);
530 subsys_d = get_conf_word(d, PCI_CB_SUBSYSTEM_ID);
533 printf("\t!!! Unknown header type %02x\n", htype);
542 if (verbose && subsys_v && subsys_v != 0xffff)
543 printf("\tSubsystem: %s\n", lookup_subsys_device_full(subsys_v, subsys_d));
547 printf("\tControl: I/O%c Mem%c BusMaster%c SpecCycle%c MemWINV%c VGASnoop%c ParErr%c Stepping%c SERR%c FastB2B%c\n",
548 (cmd & PCI_COMMAND_IO) ? '+' : '-',
549 (cmd & PCI_COMMAND_MEMORY) ? '+' : '-',
550 (cmd & PCI_COMMAND_MASTER) ? '+' : '-',
551 (cmd & PCI_COMMAND_SPECIAL) ? '+' : '-',
552 (cmd & PCI_COMMAND_INVALIDATE) ? '+' : '-',
553 (cmd & PCI_COMMAND_VGA_PALETTE) ? '+' : '-',
554 (cmd & PCI_COMMAND_PARITY) ? '+' : '-',
555 (cmd & PCI_COMMAND_WAIT) ? '+' : '-',
556 (cmd & PCI_COMMAND_SERR) ? '+' : '-',
557 (cmd & PCI_COMMAND_FAST_BACK) ? '+' : '-');
558 printf("\tStatus: 66Mhz%c UDF%c FastB2B%c ParErr%c DEVSEL=%s >TAbort%c <TAbort%c <MAbort%c >SERR%c <PERR%c\n",
559 (status & PCI_STATUS_66MHZ) ? '+' : '-',
560 (status & PCI_STATUS_UDF) ? '+' : '-',
561 (status & PCI_STATUS_FAST_BACK) ? '+' : '-',
562 (status & PCI_STATUS_PARITY) ? '+' : '-',
563 ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_SLOW) ? "slow" :
564 ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_MEDIUM) ? "medium" :
565 ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_FAST) ? "fast" : "??",
566 (status & PCI_STATUS_SIG_TARGET_ABORT) ? '+' : '-',
567 (status & PCI_STATUS_REC_TARGET_ABORT) ? '+' : '-',
568 (status & PCI_STATUS_REC_MASTER_ABORT) ? '+' : '-',
569 (status & PCI_STATUS_SIG_SYSTEM_ERROR) ? '+' : '-',
570 (status & PCI_STATUS_DETECTED_PARITY) ? '+' : '-');
571 if (cmd & PCI_COMMAND_MASTER)
573 printf("\tLatency: ");
575 printf("%d min, ", min_gnt);
577 printf("%d max, ", max_lat);
578 printf("%d set", latency);
580 printf(", cache line size %02x", cache_line);
584 printf("\tInterrupt: pin %c routed to IRQ " IRQ_FORMAT "\n", 'A' + int_pin - 1, irq);
589 if (cmd & PCI_COMMAND_MASTER)
590 printf("bus master, ");
591 if (cmd & PCI_COMMAND_VGA_PALETTE)
592 printf("VGA palette snoop, ");
593 if (cmd & PCI_COMMAND_WAIT)
594 printf("stepping, ");
595 if (cmd & PCI_COMMAND_FAST_BACK)
596 printf("fast Back2Back, ");
597 if (status & PCI_STATUS_66MHZ)
599 if (status & PCI_STATUS_UDF)
600 printf("user-definable features, ");
602 ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_SLOW) ? "slow" :
603 ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_MEDIUM) ? "medium" :
604 ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_FAST) ? "fast" : "??");
605 if (cmd & PCI_COMMAND_MASTER)
606 printf(", latency %d", latency);
609 printf(", IRQ " IRQ_FORMAT, irq);
615 if (bist & PCI_BIST_CAPABLE)
617 if (bist & PCI_BIST_START)
618 printf("\tBIST is running\n");
620 printf("\tBIST result: %02x\n", bist & PCI_BIST_CODE_MASK);
625 case PCI_HEADER_TYPE_NORMAL:
628 case PCI_HEADER_TYPE_BRIDGE:
631 case PCI_HEADER_TYPE_CARDBUS:
638 show_hex_dump(struct device *d)
641 int limit = (show_hex > 2) ? 256 : 64;
643 for(i=0; i<limit; i++)
647 printf(" %02x", get_conf_byte(d, i));
654 show_machine(struct device *d)
657 word sv_id=0, sd_id=0;
659 switch (get_conf_byte(d, PCI_HEADER_TYPE) & 0x7f)
661 case PCI_HEADER_TYPE_NORMAL:
662 sv_id = get_conf_word(d, PCI_SUBSYSTEM_VENDOR_ID);
663 sd_id = get_conf_word(d, PCI_SUBSYSTEM_ID);
665 case PCI_HEADER_TYPE_CARDBUS:
666 sv_id = get_conf_word(d, PCI_CB_SUBSYSTEM_VENDOR_ID);
667 sd_id = get_conf_word(d, PCI_CB_SUBSYSTEM_ID);
673 printf("Device:\t%02x:%02x.%x\n", d->bus, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
674 printf("Class:\t%s\n", lookup_class(get_conf_word(d, PCI_CLASS_DEVICE)));
675 printf("Vendor:\t%s\n", lookup_vendor(d->vendid));
676 printf("Device:\t%s\n", lookup_device(d->vendid, d->devid));
677 if (sv_id && sv_id != 0xffff)
679 printf("SVendor:\t%s\n", lookup_subsys_vendor(sv_id));
680 printf("SDevice:\t%s\n", lookup_subsys_device(sv_id, sd_id));
682 if (c = get_conf_byte(d, PCI_REVISION_ID))
683 printf("Rev:\t%02x\n", c);
684 if (c = get_conf_byte(d, PCI_CLASS_PROG))
685 printf("ProgIf:\t%02x\n", c);
689 printf("%02x:%02x.%x ", d->bus, PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
690 printf("\"%s\" \"%s\" \"%s\"",
691 lookup_class(get_conf_word(d, PCI_CLASS_DEVICE)),
692 lookup_vendor(d->vendid),
693 lookup_device(d->vendid, d->devid));
694 if (c = get_conf_byte(d, PCI_REVISION_ID))
695 printf(" -r%02x", c);
696 if (c = get_conf_byte(d, PCI_CLASS_PROG))
697 printf(" -p%02x", c);
698 if (sv_id && sv_id != 0xffff)
699 printf(" \"%s\" \"%s\"", lookup_subsys_vendor(sv_id), lookup_subsys_device(sv_id, sd_id));
701 printf(" \"\" \"\"");
711 for(d=first_dev; d; d=d->next)
713 if (machine_readable)
721 if (verbose || show_hex)
729 struct bridge *chain; /* Single-linked list of bridges */
730 struct bridge *next, *child; /* Tree of bridges */
731 struct bus *first_bus; /* List of busses connected to this bridge */
732 unsigned int primary, secondary, subordinate; /* Bus numbers */
733 struct device *br_dev;
739 struct device *first_dev, **last_dev;
742 static struct bridge host_bridge = { NULL, NULL, NULL, NULL, ~0, 0, ~0, NULL };
745 find_bus(struct bridge *b, unsigned int n)
749 for(bus=b->first_bus; bus; bus=bus->sibling)
750 if (bus->number == n)
756 new_bus(struct bridge *b, unsigned int n)
758 struct bus *bus = xmalloc(sizeof(struct bus));
760 bus = xmalloc(sizeof(struct bus));
762 bus->sibling = b->first_bus;
763 bus->first_dev = NULL;
764 bus->last_dev = &bus->first_dev;
770 insert_dev(struct device *d, struct bridge *b)
774 if (! (bus = find_bus(b, d->bus)))
777 for(c=b->child; c; c=c->next)
778 if (c->secondary <= d->bus && d->bus <= c->subordinate)
779 return insert_dev(d, c);
780 bus = new_bus(b, d->bus);
782 /* Simple insertion at the end _does_ guarantee the correct order as the
783 * original device list was sorted by (bus, devfn) lexicographically
784 * and all devices on the new list have the same bus number.
787 bus->last_dev = &d->next;
794 struct device *d, *d2;
795 struct bridge **last_br, *b;
797 /* Build list of bridges */
799 last_br = &host_bridge.chain;
800 for(d=first_dev; d; d=d->next)
802 word class = get_conf_word(d, PCI_CLASS_DEVICE);
803 byte ht = get_conf_byte(d, PCI_HEADER_TYPE) & 0x7f;
804 if (class == PCI_CLASS_BRIDGE_PCI &&
805 (ht == PCI_HEADER_TYPE_BRIDGE || ht == PCI_HEADER_TYPE_CARDBUS))
807 b = xmalloc(sizeof(struct bridge));
808 if (ht == PCI_HEADER_TYPE_BRIDGE)
810 b->primary = get_conf_byte(d, PCI_CB_PRIMARY_BUS);
811 b->secondary = get_conf_byte(d, PCI_CB_CARD_BUS);
812 b->subordinate = get_conf_byte(d, PCI_CB_SUBORDINATE_BUS);
816 b->primary = get_conf_byte(d, PCI_PRIMARY_BUS);
817 b->secondary = get_conf_byte(d, PCI_SECONDARY_BUS);
818 b->subordinate = get_conf_byte(d, PCI_SUBORDINATE_BUS);
822 b->next = b->child = NULL;
829 /* Create a bridge tree */
831 for(b=&host_bridge; b; b=b->chain)
833 struct bridge *c, *best;
835 for(c=&host_bridge; c; c=c->chain)
836 if (c != b && b->primary >= c->secondary && b->primary <= c->subordinate &&
837 (!best || best->subordinate - best->primary > c->subordinate - c->primary))
841 b->next = best->child;
846 /* Insert secondary bus for each bridge */
848 for(b=&host_bridge; b; b=b->chain)
849 if (!find_bus(b, b->secondary))
850 new_bus(b, b->secondary);
852 /* Create bus structs and link devices */
857 insert_dev(d, &host_bridge);
863 print_it(byte *line, byte *p)
869 if (*p == '+' || *p == '|')
875 static void show_tree_bridge(struct bridge *, byte *, byte *);
878 show_tree_dev(struct device *d, byte *line, byte *p)
882 p += sprintf(p, "%02x.%x", PCI_SLOT(d->devfn), PCI_FUNC(d->devfn));
883 for(b=&host_bridge; b; b=b->chain)
886 if (b->secondary == b->subordinate)
887 p += sprintf(p, "-[%02x]-", b->secondary);
889 p += sprintf(p, "-[%02x-%02x]-", b->secondary, b->subordinate);
890 show_tree_bridge(b, line, p);
894 p += sprintf(p, " %s", lookup_device_full(d->vendid, d->devid));
899 show_tree_bus(struct bus *b, byte *line, byte *p)
903 else if (!b->first_dev->next)
907 show_tree_dev(b->first_dev, line, p);
911 struct device *d = b->first_dev;
916 show_tree_dev(d, line, p+2);
921 show_tree_dev(d, line, p+2);
926 show_tree_bridge(struct bridge *b, byte *line, byte *p)
929 if (!b->first_bus->sibling)
931 if (b == &host_bridge)
932 p += sprintf(p, "[%02x]-", b->first_bus->number);
933 show_tree_bus(b->first_bus, line, p);
937 struct bus *u = b->first_bus;
942 k = p + sprintf(p, "+-[%02x]-", u->number);
943 show_tree_bus(u, line, k);
946 k = p + sprintf(p, "\\-[%02x]-", u->number);
947 show_tree_bus(u, line, k);
957 show_tree_bridge(&host_bridge, line, line);
963 main(int argc, char **argv)
968 if (argc == 2 && !strcmp(argv[1], "--version"))
970 puts("lspci version " PCIUTILS_VERSION);
973 filter_init(&filter);
974 while ((i = getopt(argc, argv, options)) != -1)
978 show_numeric_ids = 1;
987 if (msg = filter_parse_slot(&filter, optarg))
989 fprintf(stderr, "lspci: -f: %s\n", msg);
994 if (msg = filter_parse_id(&filter, optarg))
996 fprintf(stderr, "lspci: -d: %s\n", msg);
1017 fprintf(stderr, help_msg);