lspci.c

linux下的pci设备浏览工具

  else
    {
      mem_base = (mem_base & PCI_MEMORY_RANGE_MASK) << 16;
      mem_limit = (mem_limit & PCI_MEMORY_RANGE_MASK) << 16;
      if (mem_base <= mem_limit || verb)
	printf("\tMemory behind bridge: %08x-%08x\n", mem_base, mem_limit + 0xfffff);
    }

  if (pref_type != (pref_limit & PCI_PREF_RANGE_TYPE_MASK) ||
      (pref_type != PCI_PREF_RANGE_TYPE_32 && pref_type != PCI_PREF_RANGE_TYPE_64))
    printf("\t!!! Unknown prefetchable memory range types %x/%x\n", pref_base, pref_limit);
  else
    {
      pref_base = (pref_base & PCI_PREF_RANGE_MASK) << 16;
      pref_limit = (pref_limit & PCI_PREF_RANGE_MASK) << 16;
      if (pref_base <= pref_limit || verb)
	{
	  if (pref_type == PCI_PREF_RANGE_TYPE_32)
	    printf("\tPrefetchable memory behind bridge: %08x-%08x\n", pref_base, pref_limit + 0xfffff);
	  else
	    printf("\tPrefetchable memory behind bridge: %08x%08x-%08x%08x\n",
		   get_conf_long(d, PCI_PREF_BASE_UPPER32),
		   pref_base,
		   get_conf_long(d, PCI_PREF_LIMIT_UPPER32),
		   pref_limit + 0xfffff);
	}
    }

  if (verbose > 1)
    printf("\tSecondary status: 66MHz%c FastB2B%c ParErr%c DEVSEL=%s >TAbort%c <TAbort%c <MAbort%c <SERR%c <PERR%c\n",
	     FLAG(sec_stat, PCI_STATUS_66MHZ),
	     FLAG(sec_stat, PCI_STATUS_FAST_BACK),
	     FLAG(sec_stat, PCI_STATUS_PARITY),
	     ((sec_stat & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_SLOW) ? "slow" :
	     ((sec_stat & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_MEDIUM) ? "medium" :
	     ((sec_stat & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_FAST) ? "fast" : "??",
	     FLAG(sec_stat, PCI_STATUS_SIG_TARGET_ABORT),
	     FLAG(sec_stat, PCI_STATUS_REC_TARGET_ABORT),
	     FLAG(sec_stat, PCI_STATUS_REC_MASTER_ABORT),
	     FLAG(sec_stat, PCI_STATUS_SIG_SYSTEM_ERROR),
	     FLAG(sec_stat, PCI_STATUS_DETECTED_PARITY));

  show_rom(d, PCI_ROM_ADDRESS1);

  if (verbose > 1)
    {
      printf("\tBridgeCtl: Parity%c SERR%c NoISA%c VGA%c MAbort%c >Reset%c FastB2B%c\n",
	FLAG(brc, PCI_BRIDGE_CTL_PARITY),
	FLAG(brc, PCI_BRIDGE_CTL_SERR),
	FLAG(brc, PCI_BRIDGE_CTL_NO_ISA),
	FLAG(brc, PCI_BRIDGE_CTL_VGA),
	FLAG(brc, PCI_BRIDGE_CTL_MASTER_ABORT),
	FLAG(brc, PCI_BRIDGE_CTL_BUS_RESET),
	FLAG(brc, PCI_BRIDGE_CTL_FAST_BACK));
      printf("\t\tPriDiscTmr%c SecDiscTmr%c DiscTmrStat%c DiscTmrSERREn%c\n",
	FLAG(brc, PCI_BRIDGE_CTL_PRI_DISCARD_TIMER),
	FLAG(brc, PCI_BRIDGE_CTL_SEC_DISCARD_TIMER),
	FLAG(brc, PCI_BRIDGE_CTL_DISCARD_TIMER_STATUS),
	FLAG(brc, PCI_BRIDGE_CTL_DISCARD_TIMER_SERR_EN));
    }

  show_caps(d);
}

static void
show_htype2(struct device *d)
{
  int i;
  word cmd = get_conf_word(d, PCI_COMMAND);
  word brc = get_conf_word(d, PCI_CB_BRIDGE_CONTROL);
  word exca;
  int verb = verbose > 2;

  show_bases(d, 1);
  printf("\tBus: primary=%02x, secondary=%02x, subordinate=%02x, sec-latency=%d\n",
	 get_conf_byte(d, PCI_CB_PRIMARY_BUS),
	 get_conf_byte(d, PCI_CB_CARD_BUS),
	 get_conf_byte(d, PCI_CB_SUBORDINATE_BUS),
	 get_conf_byte(d, PCI_CB_LATENCY_TIMER));
  for (i=0; i<2; i++)
    {
      int p = 8*i;
      u32 base = get_conf_long(d, PCI_CB_MEMORY_BASE_0 + p);
      u32 limit = get_conf_long(d, PCI_CB_MEMORY_LIMIT_0 + p);
      if (limit > base || verb)
	printf("\tMemory window %d: %08x-%08x%s%s\n", i, base, limit,
	       (cmd & PCI_COMMAND_MEMORY) ? "" : " [disabled]",
	       (brc & (PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 << i)) ? " (prefetchable)" : "");
    }
  for (i=0; i<2; i++)
    {
      int p = 8*i;
      u32 base = get_conf_long(d, PCI_CB_IO_BASE_0 + p);
      u32 limit = get_conf_long(d, PCI_CB_IO_LIMIT_0 + p);
      if (!(base & PCI_IO_RANGE_TYPE_32))
	{
	  base &= 0xffff;
	  limit &= 0xffff;
	}
      base &= PCI_CB_IO_RANGE_MASK;
      limit = (limit & PCI_CB_IO_RANGE_MASK) + 3;
      if (base <= limit || verb)
	printf("\tI/O window %d: %08x-%08x%s\n", i, base, limit,
	       (cmd & PCI_COMMAND_IO) ? "" : " [disabled]");
    }

  if (get_conf_word(d, PCI_CB_SEC_STATUS) & PCI_STATUS_SIG_SYSTEM_ERROR)
    printf("\tSecondary status: SERR\n");
  if (verbose > 1)
    printf("\tBridgeCtl: Parity%c SERR%c ISA%c VGA%c MAbort%c >Reset%c 16bInt%c PostWrite%c\n",
	   FLAG(brc, PCI_CB_BRIDGE_CTL_PARITY),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_SERR),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_ISA),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_VGA),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_MASTER_ABORT),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_CB_RESET),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_16BIT_INT),
	   FLAG(brc, PCI_CB_BRIDGE_CTL_POST_WRITES));

  if (d->config_cached < 128)
    {
      printf("\t<access denied to the rest>\n");
      return;
    }

  exca = get_conf_word(d, PCI_CB_LEGACY_MODE_BASE);
  if (exca)
    printf("\t16-bit legacy interface ports at %04x\n", exca);
}

static void
show_verbose(struct device *d)
{
  struct pci_dev *p = d->dev;
  word status = get_conf_word(d, PCI_STATUS);
  word cmd = get_conf_word(d, PCI_COMMAND);
  word class = p->device_class;
  byte bist = get_conf_byte(d, PCI_BIST);
  byte htype = get_conf_byte(d, PCI_HEADER_TYPE) & 0x7f;
  byte latency = get_conf_byte(d, PCI_LATENCY_TIMER);
  byte cache_line = get_conf_byte(d, PCI_CACHE_LINE_SIZE);
  byte max_lat, min_gnt;
  byte int_pin = get_conf_byte(d, PCI_INTERRUPT_PIN);
  unsigned int irq = p->irq;

  show_terse(d);

  switch (htype)
    {
    case PCI_HEADER_TYPE_NORMAL:
      if (class == PCI_CLASS_BRIDGE_PCI)
	printf("\t!!! Invalid class %04x for header type %02x\n", class, htype);
      max_lat = get_conf_byte(d, PCI_MAX_LAT);
      min_gnt = get_conf_byte(d, PCI_MIN_GNT);
      break;
    case PCI_HEADER_TYPE_BRIDGE:
      if ((class >> 8) != PCI_BASE_CLASS_BRIDGE)
	printf("\t!!! Invalid class %04x for header type %02x\n", class, htype);
      irq = int_pin = min_gnt = max_lat = 0;
      break;
    case PCI_HEADER_TYPE_CARDBUS:
      if ((class >> 8) != PCI_BASE_CLASS_BRIDGE)
	printf("\t!!! Invalid class %04x for header type %02x\n", class, htype);
      min_gnt = max_lat = 0;
      break;
    default:
      printf("\t!!! Unknown header type %02x\n", htype);
      return;
    }

  if (p->phy_slot)
    printf("\tPhysical Slot: %s\n", p->phy_slot);

  if (verbose > 1)
    {
      printf("\tControl: I/O%c Mem%c BusMaster%c SpecCycle%c MemWINV%c VGASnoop%c ParErr%c Stepping%c SERR%c FastB2B%c DisINTx%c\n",
	     FLAG(cmd, PCI_COMMAND_IO),
	     FLAG(cmd, PCI_COMMAND_MEMORY),
	     FLAG(cmd, PCI_COMMAND_MASTER),
	     FLAG(cmd, PCI_COMMAND_SPECIAL),
	     FLAG(cmd, PCI_COMMAND_INVALIDATE),
	     FLAG(cmd, PCI_COMMAND_VGA_PALETTE),
	     FLAG(cmd, PCI_COMMAND_PARITY),
	     FLAG(cmd, PCI_COMMAND_WAIT),
	     FLAG(cmd, PCI_COMMAND_SERR),
	     FLAG(cmd, PCI_COMMAND_FAST_BACK),
	     FLAG(cmd, PCI_COMMAND_DISABLE_INTx));
      printf("\tStatus: Cap%c 66MHz%c UDF%c FastB2B%c ParErr%c DEVSEL=%s >TAbort%c <TAbort%c <MAbort%c >SERR%c <PERR%c INTx%c\n",
	     FLAG(status, PCI_STATUS_CAP_LIST),
	     FLAG(status, PCI_STATUS_66MHZ),
	     FLAG(status, PCI_STATUS_UDF),
	     FLAG(status, PCI_STATUS_FAST_BACK),
	     FLAG(status, PCI_STATUS_PARITY),
	     ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_SLOW) ? "slow" :
	     ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_MEDIUM) ? "medium" :
	     ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_FAST) ? "fast" : "??",
	     FLAG(status, PCI_STATUS_SIG_TARGET_ABORT),
	     FLAG(status, PCI_STATUS_REC_TARGET_ABORT),
	     FLAG(status, PCI_STATUS_REC_MASTER_ABORT),
	     FLAG(status, PCI_STATUS_SIG_SYSTEM_ERROR),
	     FLAG(status, PCI_STATUS_DETECTED_PARITY),
	     FLAG(status, PCI_STATUS_INTx));
      if (cmd & PCI_COMMAND_MASTER)
	{
	  printf("\tLatency: %d", latency);
	  if (min_gnt || max_lat)
	    {
	      printf(" (");
	      if (min_gnt)
		printf("%dns min", min_gnt*250);
	      if (min_gnt && max_lat)
		printf(", ");
	      if (max_lat)
		printf("%dns max", max_lat*250);
	      putchar(')');
	    }
	  if (cache_line)
	    printf(", Cache Line Size: %d bytes", cache_line * 4);
	  putchar('\n');
	}
      if (int_pin || irq)
	printf("\tInterrupt: pin %c routed to IRQ " PCIIRQ_FMT "\n",
	       (int_pin ? 'A' + int_pin - 1 : '?'), irq);
    }
  else
    {
      printf("\tFlags: ");
      if (cmd & PCI_COMMAND_MASTER)
	printf("bus master, ");
      if (cmd & PCI_COMMAND_VGA_PALETTE)
	printf("VGA palette snoop, ");
      if (cmd & PCI_COMMAND_WAIT)
	printf("stepping, ");
      if (cmd & PCI_COMMAND_FAST_BACK)
	printf("fast Back2Back, ");
      if (status & PCI_STATUS_66MHZ)
	printf("66MHz, ");
      if (status & PCI_STATUS_UDF)
	printf("user-definable features, ");
      printf("%s devsel",
	     ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_SLOW) ? "slow" :
	     ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_MEDIUM) ? "medium" :
	     ((status & PCI_STATUS_DEVSEL_MASK) == PCI_STATUS_DEVSEL_FAST) ? "fast" : "??");
      if (cmd & PCI_COMMAND_MASTER)
	printf(", latency %d", latency);
      if (irq)
	printf(", IRQ " PCIIRQ_FMT, irq);
      putchar('\n');
    }

  if (bist & PCI_BIST_CAPABLE)
    {
      if (bist & PCI_BIST_START)
	printf("\tBIST is running\n");
      else
	printf("\tBIST result: %02x\n", bist & PCI_BIST_CODE_MASK);
    }

  switch (htype)
    {
    case PCI_HEADER_TYPE_NORMAL:
      show_htype0(d);
      break;
    case PCI_HEADER_TYPE_BRIDGE:
      show_htype1(d);
      break;
    case PCI_HEADER_TYPE_CARDBUS:
      show_htype2(d);
      break;
    }
}

/*** Machine-readable dumps ***/

static void
show_hex_dump(struct device *d)
{
  unsigned int i, cnt;

  cnt = d->config_cached;
  if (opt_hex >= 3 && config_fetch(d, cnt, 256-cnt))
    {
      cnt = 256;
      if (opt_hex >= 4 && config_fetch(d, 256, 4096-256))
	cnt = 4096;
    }

  for (i=0; i<cnt; i++)
    {
      if (! (i & 15))
	printf("%02x:", i);
      printf(" %02x", get_conf_byte(d, i));
      if ((i & 15) == 15)
	putchar('\n');
    }
}

static void
print_shell_escaped(char *c)
{
  printf(" \"");
  while (*c)
    {
      if (*c == '"' || *c == '\\')
	putchar('\\');
      putchar(*c++);
    }
  putchar('"');
}

static void
show_machine(struct device *d)
{
  struct pci_dev *p = d->dev;
  int c;
  word sv_id, sd_id;
  char classbuf[128], vendbuf[128], devbuf[128], svbuf[128], sdbuf[128];

  get_subid(d, &sv_id, &sd_id);

  if (verbose)
    {
      printf((opt_machine >= 2) ? "Slot:\t" : "Device:\t");
      show_slot_name(d);
      putchar('\n');
      printf("Class:\t%s\n",
	     pci_lookup_name(pacc, classbuf, sizeof(classbuf), PCI_LOOKUP_CLASS, p->device_class));
      printf("Vendor:\t%s\n",
	     pci_lookup_name(pacc, vendbuf, sizeof(vendbuf), PCI_LOOKUP_VENDOR, p->vendor_id, p->device_id));
      printf("Device:\t%s\n",
	     pci_lookup_name(pacc, devbuf, sizeof(devbuf), PCI_LOOKUP_DEVICE, p->vendor_id, p->device_id));
      if (sv_id && sv_id != 0xffff)
	{
	  printf("SVendor:\t%s\n",
		 pci_lookup_name(pacc, svbuf, sizeof(svbuf), PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_VENDOR, sv_id));
	  printf("SDevice:\t%s\n",
		 pci_lookup_name(pacc, sdbuf, sizeof(sdbuf), PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_DEVICE, p->vendor_id, p->device_id, sv_id, sd_id));
	}
      if (p->phy_slot)
	printf("PhySlot:\t%s\n", p->phy_slot);
      if (c = get_conf_byte(d, PCI_REVISION_ID))
	printf("Rev:\t%02x\n", c);
      if (c = get_conf_byte(d, PCI_CLASS_PROG))
	printf("ProgIf:\t%02x\n", c);
      if (opt_kernel)
	show_kernel_machine(d);
    }
  else
    {
      show_slot_name(d);
      print_shell_escaped(pci_lookup_name(pacc, classbuf, sizeof(classbuf), PCI_LOOKUP_CLASS, p->device_class));
      print_shell_escaped(pci_lookup_name(pacc, vendbuf, sizeof(vendbuf), PCI_LOOKUP_VENDOR, p->vendor_id, p->device_id));
      print_shell_escaped(pci_lookup_name(pacc, devbuf, sizeof(devbuf), PCI_LOOKUP_DEVICE, p->vendor_id, p->device_id));
      if (c = get_conf_byte(d, PCI_REVISION_ID))
	printf(" -r%02x", c);
      if (c = get_conf_byte(d, PCI_CLASS_PROG))
	printf(" -p%02x", c);
      if (sv_id && sv_id != 0xffff)
	{
	  print_shell_escaped(pci_lookup_name(pacc, svbuf, sizeof(svbuf), PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_VENDOR, sv_id));
	  print_shell_escaped(pci_lookup_name(pacc, sdbuf, sizeof(sdbuf), PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_DEVICE, p->vendor_id, p->device_id, sv_id, sd_id));
	}
      else
	printf(" \"\" \"\"");
      putchar('\n');
    }
}

/*** Main show function ***/

void
show_device(struct device *d)
{
  if (opt_machine)
    show_machine(d);
  else
    {
      if (verbose)
	show_verbose(d);
      else
	show_terse(d);
      if (opt_kernel || verbose)
	show_kernel(d);
    }
  if (opt_hex)
    show_hex_dump(d);
  if (verbose || opt_hex)
    putchar('\n');
}

static void
show(void)
{
  struct device *d;

  for (d=first_dev; d; d=d->next)
    show_device(d);
}

/* Main */

int
main(int argc, char **argv)
{
  int i;
  char *msg;

  if (argc == 2 && !strcmp(argv[1], "--version"))
    {
      puts("lspci version " PCIUTILS_VERSION);
      return 0;
    }

  pacc = pci_alloc();
  pacc->error = die;
  pci_filter_init(pacc, &filter);

  while ((i = getopt(argc, argv, options)) != -1)
    switch (i)
      {
      case 'n':
	pacc->numeric_ids++;
	break;
      case 'v':
	verbose++;
	break;
      case 'b':
	pacc->buscentric = 1;
	break;
      case 's':
	if (msg = pci_filter_parse_slot(&filter, optarg))
	  die("-s: %s", msg);
	break;
      case 'd':
	if (msg = pci_filter_parse_id(&filter, optarg))
	  die("-d: %s", msg);
	break;
      case 'x':
	opt_hex++;
	break;
      case 't':
	opt_tree++;
	break;
      case 'i':
        pci_set_name_list_path(pacc, optarg, 0);
	break;
      case 'm':
	opt_machine++;
	break;
      case 'p':
	opt_pcimap = optarg;
	break;
#ifdef PCI_OS_LINUX
      case 'k':
	opt_kernel++;
	break;
#endif
      case 'M':
	opt_map_mode++;
	break;
      case 'D':
	opt_domains = 2;
	break;
#ifdef PCI_USE_DNS
      case 'q':
	opt_query_dns++;
	break;
      case 'Q':
	opt_query_all = 1;
	break;
#else
      case 'q':
      case 'Q':
	die("DNS queries are not available in this version");
#endif
      default:
	if (parse_generic_option(i, pacc, optarg))
	  break;
      bad:
	fprintf(stderr, help_msg, pacc->id_file_name);
	return 1;
      }
  if (optind < argc)
    goto bad;

  if (opt_query_dns)
    {
      pacc->id_lookup_mode |= PCI_LOOKUP_NETWORK;
      if (opt_query_dns > 1)
	pacc->id_lookup_mode |= PCI_LOOKUP_REFRESH_CACHE;
    }
  if (opt_query_all)
    pacc->id_lookup_mode |= PCI_LOOKUP_NETWORK | PCI_LOOKUP_SKIP_LOCAL;

  pci_init(pacc);
  if (opt_map_mode)
    map_the_bus();
  else
    {
      scan_devices();
      sort_them();
      if (opt_tree)
	show_forest();
      else
	show();
    }
  pci_cleanup(pacc);

  return (seen_errors ? 2 : 0);
}