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15d107308f
freebsd-dev/usr.sbin/pciconf/pciconf.c
John Baldwin 15d107308f Add a new -B flag for use with list mode (-l) that lists details about 
bridges.  Currently this includes information about what resources a
bridge decodes on the upstream side for use by downstream devices including
bus numbers, I/O port resources, and memory resources.  Windows and bus
ranges are enumerated for both PCI-PCI bridges and PCI-CardBus bridges.

To simplify the implementation, all enumeration is done by reading the
appropriate config space registers directly rather than querying the
bridge driver in the kernel via new ioctls.  This does result in a few
limitations.

First, an unimplemented window in a PCI-PCI bridge cannot be accurately
detected as accurate detection requires writing to the window base
register.  That is not safe for pciconf(8).  Instead, this assumes that
any window where both the base and limit read as all zeroes is
unimplemented.

Second, the PCI-PCI bridge driver in a tree has a few quirks for
PCI-PCI bridges that use subtractive decoding but do not indicate that
via the progif config register.  The list of quirks is duplicated in
pciconf's source.

Reviewed by:	imp
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D4171
2015-11-23 23:48:07 +00:00

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/*
* Copyright 1996 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/types.h>
#include <sys/fcntl.h>
#include <assert.h>
#include <ctype.h>
#include <err.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/pciio.h>
#include <sys/queue.h>
#include <dev/pci/pcireg.h>
#include "pathnames.h"
#include "pciconf.h"
struct pci_device_info
{
TAILQ_ENTRY(pci_device_info) link;
int id;
char *desc;
};
struct pci_vendor_info
{
TAILQ_ENTRY(pci_vendor_info) link;
TAILQ_HEAD(,pci_device_info) devs;
int id;
char *desc;
};
TAILQ_HEAD(,pci_vendor_info) pci_vendors;
static struct pcisel getsel(const char *str);
static void list_bridge(int fd, struct pci_conf *p);
static void list_bars(int fd, struct pci_conf *p);
static void list_devs(const char *name, int verbose, int bars, int bridge,
int caps, int errors, int vpd);
static void list_verbose(struct pci_conf *p);
static void list_vpd(int fd, struct pci_conf *p);
static const char *guess_class(struct pci_conf *p);
static const char *guess_subclass(struct pci_conf *p);
static int load_vendors(void);
static void readit(const char *, const char *, int);
static void writeit(const char *, const char *, const char *, int);
static void chkattached(const char *);
static int exitstatus = 0;
static void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n%s\n",
"usage: pciconf -l [-BbcevV] [device]",
" pciconf -a device",
" pciconf -r [-b | -h] device addr[:addr2]",
" pciconf -w [-b | -h] device addr value");
exit (1);
}
int
main(int argc, char **argv)
{
int c;
int listmode, readmode, writemode, attachedmode;
int bars, bridge, caps, errors, verbose, vpd;
int byte, isshort;
listmode = readmode = writemode = attachedmode = 0;
bars = bridge = caps = errors = verbose = vpd = byte = isshort = 0;
while ((c = getopt(argc, argv, "aBbcehlrwVv")) != -1) {
switch(c) {
case 'a':
attachedmode = 1;
break;
case 'B':
bridge = 1;
break;
case 'b':
bars = 1;
byte = 1;
break;
case 'c':
caps = 1;
break;
case 'e':
errors = 1;
break;
case 'h':
isshort = 1;
break;
case 'l':
listmode = 1;
break;
case 'r':
readmode = 1;
break;
case 'w':
writemode = 1;
break;
case 'v':
verbose = 1;
break;
case 'V':
vpd = 1;
break;
default:
usage();
}
}
if ((listmode && optind >= argc + 1)
|| (writemode && optind + 3 != argc)
|| (readmode && optind + 2 != argc)
|| (attachedmode && optind + 1 != argc))
usage();
if (listmode) {
list_devs(optind + 1 == argc ? argv[optind] : NULL, verbose,
bars, bridge, caps, errors, vpd);
} else if (attachedmode) {
chkattached(argv[optind]);
} else if (readmode) {
readit(argv[optind], argv[optind + 1],
byte ? 1 : isshort ? 2 : 4);
} else if (writemode) {
writeit(argv[optind], argv[optind + 1], argv[optind + 2],
byte ? 1 : isshort ? 2 : 4);
} else {
usage();
}
return exitstatus;
}
static void
list_devs(const char *name, int verbose, int bars, int bridge, int caps,
int errors, int vpd)
{
int fd;
struct pci_conf_io pc;
struct pci_conf conf[255], *p;
struct pci_match_conf patterns[1];
int none_count = 0;
if (verbose)
load_vendors();
fd = open(_PATH_DEVPCI, (bridge || caps || errors) ? O_RDWR : O_RDONLY,
0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
bzero(&pc, sizeof(struct pci_conf_io));
pc.match_buf_len = sizeof(conf);
pc.matches = conf;
if (name != NULL) {
bzero(&patterns, sizeof(patterns));
patterns[0].pc_sel = getsel(name);
patterns[0].flags = PCI_GETCONF_MATCH_DOMAIN |
PCI_GETCONF_MATCH_BUS | PCI_GETCONF_MATCH_DEV |
PCI_GETCONF_MATCH_FUNC;
pc.num_patterns = 1;
pc.pat_buf_len = sizeof(patterns);
pc.patterns = patterns;
}
do {
if (ioctl(fd, PCIOCGETCONF, &pc) == -1)
err(1, "ioctl(PCIOCGETCONF)");
/*
* 255 entries should be more than enough for most people,
* but if someone has more devices, and then changes things
* around between ioctls, we'll do the cheesy thing and
* just bail. The alternative would be to go back to the
* beginning of the list, and print things twice, which may
* not be desirable.
*/
if (pc.status == PCI_GETCONF_LIST_CHANGED) {
warnx("PCI device list changed, please try again");
exitstatus = 1;
close(fd);
return;
} else if (pc.status == PCI_GETCONF_ERROR) {
warnx("error returned from PCIOCGETCONF ioctl");
exitstatus = 1;
close(fd);
return;
}
for (p = conf; p < &conf[pc.num_matches]; p++) {
printf("%s%d@pci%d:%d:%d:%d:\tclass=0x%06x card=0x%08x "
"chip=0x%08x rev=0x%02x hdr=0x%02x\n",
*p->pd_name ? p->pd_name :
"none",
*p->pd_name ? (int)p->pd_unit :
none_count++, p->pc_sel.pc_domain,
p->pc_sel.pc_bus, p->pc_sel.pc_dev,
p->pc_sel.pc_func, (p->pc_class << 16) |
(p->pc_subclass << 8) | p->pc_progif,
(p->pc_subdevice << 16) | p->pc_subvendor,
(p->pc_device << 16) | p->pc_vendor,
p->pc_revid, p->pc_hdr);
if (verbose)
list_verbose(p);
if (bars)
list_bars(fd, p);
if (bridge)
list_bridge(fd, p);
if (caps)
list_caps(fd, p);
if (errors)
list_errors(fd, p);
if (vpd)
list_vpd(fd, p);
}
} while (pc.status == PCI_GETCONF_MORE_DEVS);
close(fd);
}
static void
print_bus_range(int fd, struct pci_conf *p, int secreg, int subreg)
{
uint8_t secbus, subbus;
secbus = read_config(fd, &p->pc_sel, secreg, 1);
subbus = read_config(fd, &p->pc_sel, subreg, 1);
printf(" bus range = %u-%u\n", secbus, subbus);
}
static void
print_window(int reg, const char *type, int range, uint64_t base,
uint64_t limit)
{
printf(" window[%02x] = type %s, range %2d, addr %#jx-%#jx, %s\n",
reg, type, range, (uintmax_t)base, (uintmax_t)limit,
base < limit ? "enabled" : "disabled");
}
static void
print_special_decode(bool isa, bool vga, bool subtractive)
{
bool comma;
if (isa || vga || subtractive) {
comma = false;
printf(" decode = ");
if (isa) {
printf("ISA");
comma = true;
}
if (vga) {
printf("%sVGA", comma ? ", " : "");
comma = true;
}
if (subtractive)
printf("%ssubtractive", comma ? ", " : "");
printf("\n");
}
}
static void
print_bridge_windows(int fd, struct pci_conf *p)
{
uint64_t base, limit;
uint32_t val;
uint16_t bctl;
bool subtractive;
int range;
/*
* XXX: This assumes that a window with a base and limit of 0
* is not implemented. In theory a window might be programmed
* at the smallest size with a base of 0, but those do not seem
* common in practice.
*/
val = read_config(fd, &p->pc_sel, PCIR_IOBASEL_1, 1);
if (val != 0 || read_config(fd, &p->pc_sel, PCIR_IOLIMITL_1, 1) != 0) {
if ((val & PCIM_BRIO_MASK) == PCIM_BRIO_32) {
base = PCI_PPBIOBASE(
read_config(fd, &p->pc_sel, PCIR_IOBASEH_1, 2),
val);
limit = PCI_PPBIOLIMIT(
read_config(fd, &p->pc_sel, PCIR_IOLIMITH_1, 2),
read_config(fd, &p->pc_sel, PCIR_IOLIMITL_1, 1));
range = 32;
} else {
base = PCI_PPBIOBASE(0, val);
limit = PCI_PPBIOLIMIT(0,
read_config(fd, &p->pc_sel, PCIR_IOLIMITL_1, 1));
range = 16;
}
print_window(PCIR_IOBASEL_1, "I/O Port", range, base, limit);
}
base = PCI_PPBMEMBASE(0,
read_config(fd, &p->pc_sel, PCIR_MEMBASE_1, 2));
limit = PCI_PPBMEMLIMIT(0,
read_config(fd, &p->pc_sel, PCIR_MEMLIMIT_1, 2));
print_window(PCIR_MEMBASE_1, "Memory", 32, base, limit);
val = read_config(fd, &p->pc_sel, PCIR_PMBASEL_1, 2);
if (val != 0 || read_config(fd, &p->pc_sel, PCIR_PMLIMITL_1, 2) != 0) {
if ((val & PCIM_BRPM_MASK) == PCIM_BRPM_64) {
base = PCI_PPBMEMBASE(
read_config(fd, &p->pc_sel, PCIR_PMBASEH_1, 4),
val);
limit = PCI_PPBMEMLIMIT(
read_config(fd, &p->pc_sel, PCIR_PMLIMITH_1, 4),
read_config(fd, &p->pc_sel, PCIR_PMLIMITL_1, 2));
range = 64;
} else {
base = PCI_PPBMEMBASE(0, val);
limit = PCI_PPBMEMLIMIT(0,
read_config(fd, &p->pc_sel, PCIR_PMLIMITL_1, 2));
range = 32;
}
print_window(PCIR_PMBASEL_1, "Prefetchable Memory", range, base,
limit);
}
/*
* XXX: This list of bridges that are subtractive but do not set
* progif to indicate it is copied from pci_pci.c.
*/
subtractive = p->pc_progif == PCIP_BRIDGE_PCI_SUBTRACTIVE;
switch (p->pc_device << 16 | p->pc_vendor) {
case 0xa002177d: /* Cavium ThunderX */
case 0x124b8086: /* Intel 82380FB Mobile */
case 0x060513d7: /* Toshiba ???? */
subtractive = true;
}
if (p->pc_vendor == 0x8086 && (p->pc_device & 0xff00) == 0x2400)
subtractive = true;
bctl = read_config(fd, &p->pc_sel, PCIR_BRIDGECTL_1, 2);
print_special_decode(bctl & PCIB_BCR_ISA_ENABLE,
bctl & PCIB_BCR_VGA_ENABLE, subtractive);
}
static void
print_cardbus_mem_window(int fd, struct pci_conf *p, int basereg, int limitreg,
bool prefetch)
{
print_window(basereg, prefetch ? "Prefetchable Memory" : "Memory", 32,
PCI_CBBMEMBASE(read_config(fd, &p->pc_sel, basereg, 4)),
PCI_CBBMEMLIMIT(read_config(fd, &p->pc_sel, limitreg, 4)));
}
static void
print_cardbus_io_window(int fd, struct pci_conf *p, int basereg, int limitreg)
{
uint32_t base, limit;
uint32_t val;
int range;
val = read_config(fd, &p->pc_sel, basereg, 2);
if ((val & PCIM_CBBIO_MASK) == PCIM_CBBIO_32) {
base = PCI_CBBIOBASE(read_config(fd, &p->pc_sel, basereg, 4));
limit = PCI_CBBIOBASE(read_config(fd, &p->pc_sel, limitreg, 4));
range = 32;
} else {
base = PCI_CBBIOBASE(val);
limit = PCI_CBBIOBASE(read_config(fd, &p->pc_sel, limitreg, 2));
range = 16;
}
print_window(basereg, "I/O Port", range, base, limit);
}
static void
print_cardbus_windows(int fd, struct pci_conf *p)
{
uint16_t bctl;
bctl = read_config(fd, &p->pc_sel, PCIR_BRIDGECTL_2, 2);
print_cardbus_mem_window(fd, p, PCIR_MEMBASE0_2, PCIR_MEMLIMIT0_2,
bctl & CBB_BCR_PREFETCH_0_ENABLE);
print_cardbus_mem_window(fd, p, PCIR_MEMBASE1_2, PCIR_MEMLIMIT1_2,
bctl & CBB_BCR_PREFETCH_1_ENABLE);
print_cardbus_io_window(fd, p, PCIR_IOBASE0_2, PCIR_IOLIMIT0_2);
print_cardbus_io_window(fd, p, PCIR_IOBASE1_2, PCIR_IOLIMIT1_2);
print_special_decode(bctl & CBB_BCR_ISA_ENABLE,
bctl & CBB_BCR_VGA_ENABLE, false);
}
static void
list_bridge(int fd, struct pci_conf *p)
{
switch (p->pc_hdr & PCIM_HDRTYPE) {
case PCIM_HDRTYPE_BRIDGE:
print_bus_range(fd, p, PCIR_SECBUS_1, PCIR_SUBBUS_1);
print_bridge_windows(fd, p);
break;
case PCIM_HDRTYPE_CARDBUS:
print_bus_range(fd, p, PCIR_SECBUS_2, PCIR_SUBBUS_2);
print_cardbus_windows(fd, p);
break;
}
}
static void
list_bars(int fd, struct pci_conf *p)
{
int i, max;
switch (p->pc_hdr & PCIM_HDRTYPE) {
case PCIM_HDRTYPE_NORMAL:
max = PCIR_MAX_BAR_0;
break;
case PCIM_HDRTYPE_BRIDGE:
max = PCIR_MAX_BAR_1;
break;
case PCIM_HDRTYPE_CARDBUS:
max = PCIR_MAX_BAR_2;
break;
default:
return;
}
for (i = 0; i <= max; i++)
print_bar(fd, p, "bar ", PCIR_BAR(i));
}
void
print_bar(int fd, struct pci_conf *p, const char *label, uint16_t bar_offset)
{
uint64_t base;
const char *type;
struct pci_bar_io bar;
int range;
bar.pbi_sel = p->pc_sel;
bar.pbi_reg = bar_offset;
if (ioctl(fd, PCIOCGETBAR, &bar) < 0)
return;
if (PCI_BAR_IO(bar.pbi_base)) {
type = "I/O Port";
range = 32;
base = bar.pbi_base & PCIM_BAR_IO_BASE;
} else {
if (bar.pbi_base & PCIM_BAR_MEM_PREFETCH)
type = "Prefetchable Memory";
else
type = "Memory";
switch (bar.pbi_base & PCIM_BAR_MEM_TYPE) {
case PCIM_BAR_MEM_32:
range = 32;
break;
case PCIM_BAR_MEM_1MB:
range = 20;
break;
case PCIM_BAR_MEM_64:
range = 64;
break;
default:
range = -1;
}
base = bar.pbi_base & ~((uint64_t)0xf);
}
printf(" %s[%02x] = type %s, range %2d, base %#jx, ",
label, bar_offset, type, range, (uintmax_t)base);
printf("size %ju, %s\n", (uintmax_t)bar.pbi_length,
bar.pbi_enabled ? "enabled" : "disabled");
}
static void
list_verbose(struct pci_conf *p)
{
struct pci_vendor_info *vi;
struct pci_device_info *di;
const char *dp;
TAILQ_FOREACH(vi, &pci_vendors, link) {
if (vi->id == p->pc_vendor) {
printf(" vendor = '%s'\n", vi->desc);
break;
}
}
if (vi == NULL) {
di = NULL;
} else {
TAILQ_FOREACH(di, &vi->devs, link) {
if (di->id == p->pc_device) {
printf(" device = '%s'\n", di->desc);
break;
}
}
}
if ((dp = guess_class(p)) != NULL)
printf(" class = %s\n", dp);
if ((dp = guess_subclass(p)) != NULL)
printf(" subclass = %s\n", dp);
}
static void
list_vpd(int fd, struct pci_conf *p)
{
struct pci_list_vpd_io list;
struct pci_vpd_element *vpd, *end;
list.plvi_sel = p->pc_sel;
list.plvi_len = 0;
list.plvi_data = NULL;
if (ioctl(fd, PCIOCLISTVPD, &list) < 0 || list.plvi_len == 0)
return;
list.plvi_data = malloc(list.plvi_len);
if (ioctl(fd, PCIOCLISTVPD, &list) < 0) {
free(list.plvi_data);
return;
}
vpd = list.plvi_data;
end = (struct pci_vpd_element *)((char *)vpd + list.plvi_len);
for (; vpd < end; vpd = PVE_NEXT(vpd)) {
if (vpd->pve_flags == PVE_FLAG_IDENT) {
printf(" VPD ident = '%.*s'\n",
(int)vpd->pve_datalen, vpd->pve_data);
continue;
}
/* Ignore the checksum keyword. */
if (!(vpd->pve_flags & PVE_FLAG_RW) &&
memcmp(vpd->pve_keyword, "RV", 2) == 0)
continue;
/* Ignore remaining read-write space. */
if (vpd->pve_flags & PVE_FLAG_RW &&
memcmp(vpd->pve_keyword, "RW", 2) == 0)
continue;
/* Handle extended capability keyword. */
if (!(vpd->pve_flags & PVE_FLAG_RW) &&
memcmp(vpd->pve_keyword, "CP", 2) == 0) {
printf(" VPD ro CP = ID %02x in map 0x%x[0x%x]\n",
(unsigned int)vpd->pve_data[0],
PCIR_BAR((unsigned int)vpd->pve_data[1]),
(unsigned int)vpd->pve_data[3] << 8 |
(unsigned int)vpd->pve_data[2]);
continue;
}
/* Remaining keywords should all have ASCII values. */
printf(" VPD %s %c%c = '%.*s'\n",
vpd->pve_flags & PVE_FLAG_RW ? "rw" : "ro",
vpd->pve_keyword[0], vpd->pve_keyword[1],
(int)vpd->pve_datalen, vpd->pve_data);
}
free(list.plvi_data);
}
/*
* This is a direct cut-and-paste from the table in sys/dev/pci/pci.c.
*/
static struct
{
int class;
int subclass;
const char *desc;
} pci_nomatch_tab[] = {
{PCIC_OLD, -1, "old"},
{PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"},
{PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"},
{PCIC_STORAGE, -1, "mass storage"},
{PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"},
{PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"},
{PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"},
{PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"},
{PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"},
{PCIC_STORAGE, PCIS_STORAGE_ATA_ADMA, "ATA (ADMA)"},
{PCIC_STORAGE, PCIS_STORAGE_SATA, "SATA"},
{PCIC_STORAGE, PCIS_STORAGE_SAS, "SAS"},
{PCIC_STORAGE, PCIS_STORAGE_NVM, "NVM"},
{PCIC_NETWORK, -1, "network"},
{PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"},
{PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"},
{PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"},
{PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"},
{PCIC_NETWORK, PCIS_NETWORK_ISDN, "ISDN"},
{PCIC_DISPLAY, -1, "display"},
{PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"},
{PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"},
{PCIC_DISPLAY, PCIS_DISPLAY_3D, "3D"},
{PCIC_MULTIMEDIA, -1, "multimedia"},
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"},
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"},
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_TELE, "telephony"},
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_HDA, "HDA"},
{PCIC_MEMORY, -1, "memory"},
{PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"},
{PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"},
{PCIC_BRIDGE, -1, "bridge"},
{PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"},
{PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"},
{PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"},
{PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"},
{PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"},
{PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"},
{PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"},
{PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"},
{PCIC_BRIDGE, PCIS_BRIDGE_RACEWAY, "PCI-RACEway"},
{PCIC_SIMPLECOMM, -1, "simple comms"},
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"},
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MULSER, "multiport serial"},
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_MODEM, "generic modem"},
{PCIC_BASEPERIPH, -1, "base peripheral"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_PCIHOT, "PCI hot-plug controller"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_SDHC, "SD host controller"},
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_IOMMU, "IOMMU"},
{PCIC_INPUTDEV, -1, "input device"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_SCANNER, "scanner"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_GAMEPORT, "gameport"},
{PCIC_DOCKING, -1, "docking station"},
{PCIC_PROCESSOR, -1, "processor"},
{PCIC_SERIALBUS, -1, "serial bus"},
{PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"},
{PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"},
{PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"},
{PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"},
{PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"},
{PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"},
{PCIC_WIRELESS, -1, "wireless controller"},
{PCIC_WIRELESS, PCIS_WIRELESS_IRDA, "iRDA"},
{PCIC_WIRELESS, PCIS_WIRELESS_IR, "IR"},
{PCIC_WIRELESS, PCIS_WIRELESS_RF, "RF"},
{PCIC_INTELLIIO, -1, "intelligent I/O controller"},
{PCIC_INTELLIIO, PCIS_INTELLIIO_I2O, "I2O"},
{PCIC_SATCOM, -1, "satellite communication"},
{PCIC_SATCOM, PCIS_SATCOM_TV, "sat TV"},
{PCIC_SATCOM, PCIS_SATCOM_AUDIO, "sat audio"},
{PCIC_SATCOM, PCIS_SATCOM_VOICE, "sat voice"},
{PCIC_SATCOM, PCIS_SATCOM_DATA, "sat data"},
{PCIC_CRYPTO, -1, "encrypt/decrypt"},
{PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "network/computer crypto"},
{PCIC_CRYPTO, PCIS_CRYPTO_NETCOMP, "entertainment crypto"},
{PCIC_DASP, -1, "dasp"},
{PCIC_DASP, PCIS_DASP_DPIO, "DPIO module"},
{0, 0, NULL}
};
static const char *
guess_class(struct pci_conf *p)
{
int i;
for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
if (pci_nomatch_tab[i].class == p->pc_class)
return(pci_nomatch_tab[i].desc);
}
return(NULL);
}
static const char *
guess_subclass(struct pci_conf *p)
{
int i;
for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
if ((pci_nomatch_tab[i].class == p->pc_class) &&
(pci_nomatch_tab[i].subclass == p->pc_subclass))
return(pci_nomatch_tab[i].desc);
}
return(NULL);
}
static int
load_vendors(void)
{
const char *dbf;
FILE *db;
struct pci_vendor_info *cv;
struct pci_device_info *cd;
char buf[1024], str[1024];
char *ch;
int id, error;
/*
* Locate the database and initialise.
*/
TAILQ_INIT(&pci_vendors);
if ((dbf = getenv("PCICONF_VENDOR_DATABASE")) == NULL)
dbf = _PATH_LPCIVDB;
if ((db = fopen(dbf, "r")) == NULL) {
dbf = _PATH_PCIVDB;
if ((db = fopen(dbf, "r")) == NULL)
return(1);
}
cv = NULL;
cd = NULL;
error = 0;
/*
* Scan input lines from the database
*/
for (;;) {
if (fgets(buf, sizeof(buf), db) == NULL)
break;
if ((ch = strchr(buf, '#')) != NULL)
*ch = '\0';
ch = strchr(buf, '\0') - 1;
while (ch > buf && isspace(*ch))
*ch-- = '\0';
if (ch <= buf)
continue;
/* Can't handle subvendor / subdevice entries yet */
if (buf[0] == '\t' && buf[1] == '\t')
continue;
/* Check for vendor entry */
if (buf[0] != '\t' && sscanf(buf, "%04x %[^\n]", &id, str) == 2) {
if ((id == 0) || (strlen(str) < 1))
continue;
if ((cv = malloc(sizeof(struct pci_vendor_info))) == NULL) {
warn("allocating vendor entry");
error = 1;
break;
}
if ((cv->desc = strdup(str)) == NULL) {
free(cv);
warn("allocating vendor description");
error = 1;
break;
}
cv->id = id;
TAILQ_INIT(&cv->devs);
TAILQ_INSERT_TAIL(&pci_vendors, cv, link);
continue;
}
/* Check for device entry */
if (buf[0] == '\t' && sscanf(buf + 1, "%04x %[^\n]", &id, str) == 2) {
if ((id == 0) || (strlen(str) < 1))
continue;
if (cv == NULL) {
warnx("device entry with no vendor!");
continue;
}
if ((cd = malloc(sizeof(struct pci_device_info))) == NULL) {
warn("allocating device entry");
error = 1;
break;
}
if ((cd->desc = strdup(str)) == NULL) {
free(cd);
warn("allocating device description");
error = 1;
break;
}
cd->id = id;
TAILQ_INSERT_TAIL(&cv->devs, cd, link);
continue;
}
/* It's a comment or junk, ignore it */
}
if (ferror(db))
error = 1;
fclose(db);
return(error);
}
uint32_t
read_config(int fd, struct pcisel *sel, long reg, int width)
{
struct pci_io pi;
pi.pi_sel = *sel;
pi.pi_reg = reg;
pi.pi_width = width;
if (ioctl(fd, PCIOCREAD, &pi) < 0)
err(1, "ioctl(PCIOCREAD)");
return (pi.pi_data);
}
static struct pcisel
getdevice(const char *name)
{
struct pci_conf_io pc;
struct pci_conf conf[1];
struct pci_match_conf patterns[1];
char *cp;
int fd;
fd = open(_PATH_DEVPCI, O_RDONLY, 0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
bzero(&pc, sizeof(struct pci_conf_io));
pc.match_buf_len = sizeof(conf);
pc.matches = conf;
bzero(&patterns, sizeof(patterns));
/*
* The pattern structure requires the unit to be split out from
* the driver name. Walk backwards from the end of the name to
* find the start of the unit.
*/
if (name[0] == '\0')
errx(1, "Empty device name");
cp = strchr(name, '\0');
assert(cp != NULL && cp != name);
cp--;
while (cp != name && isdigit(cp[-1]))
cp--;
if (cp == name || !isdigit(*cp))
errx(1, "Invalid device name");
if ((size_t)(cp - name) + 1 > sizeof(patterns[0].pd_name))
errx(1, "Device name is too long");
memcpy(patterns[0].pd_name, name, cp - name);
patterns[0].pd_unit = strtol(cp, &cp, 10);
assert(*cp == '\0');
patterns[0].flags = PCI_GETCONF_MATCH_NAME | PCI_GETCONF_MATCH_UNIT;
pc.num_patterns = 1;
pc.pat_buf_len = sizeof(patterns);
pc.patterns = patterns;
if (ioctl(fd, PCIOCGETCONF, &pc) == -1)
err(1, "ioctl(PCIOCGETCONF)");
if (pc.status != PCI_GETCONF_LAST_DEVICE &&
pc.status != PCI_GETCONF_MORE_DEVS)
errx(1, "error returned from PCIOCGETCONF ioctl");
close(fd);
if (pc.num_matches == 0)
errx(1, "Device not found");
return (conf[0].pc_sel);
}
static struct pcisel
parsesel(const char *str)
{
char *ep = strchr(str, '@');
char *epbase;
struct pcisel sel;
unsigned long selarr[4];
int i;
if (ep == NULL)
ep = (char *)str;
else
ep++;
epbase = ep;
if (strncmp(ep, "pci", 3) == 0) {
ep += 3;
i = 0;
do {
selarr[i++] = strtoul(ep, &ep, 10);
} while ((*ep == ':' || *ep == '.') && *++ep != '\0' && i < 4);
if (i > 2)
sel.pc_func = selarr[--i];
else
sel.pc_func = 0;
sel.pc_dev = selarr[--i];
sel.pc_bus = selarr[--i];
if (i > 0)
sel.pc_domain = selarr[--i];
else
sel.pc_domain = 0;
}
if (*ep != '\x0' || ep == epbase)
errx(1, "cannot parse selector %s", str);
return sel;
}
static struct pcisel
getsel(const char *str)
{
/*
* No device names contain colons and selectors always contain
* at least one colon.
*/
if (strchr(str, ':') == NULL)
return (getdevice(str));
else
return (parsesel(str));
}
static void
readone(int fd, struct pcisel *sel, long reg, int width)
{
printf("%0*x", width*2, read_config(fd, sel, reg, width));
}
static void
readit(const char *name, const char *reg, int width)
{
long rstart;
long rend;
long r;
char *end;
int i;
int fd;
struct pcisel sel;
fd = open(_PATH_DEVPCI, O_RDWR, 0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
rend = rstart = strtol(reg, &end, 0);
if (end && *end == ':') {
end++;
rend = strtol(end, (char **) 0, 0);
}
sel = getsel(name);
for (i = 1, r = rstart; r <= rend; i++, r += width) {
readone(fd, &sel, r, width);
if (i && !(i % 8))
putchar(' ');
putchar(i % (16/width) ? ' ' : '\n');
}
if (i % (16/width) != 1)
putchar('\n');
close(fd);
}
static void
writeit(const char *name, const char *reg, const char *data, int width)
{
int fd;
struct pci_io pi;
pi.pi_sel = getsel(name);
pi.pi_reg = strtoul(reg, (char **)0, 0); /* XXX error check */
pi.pi_width = width;
pi.pi_data = strtoul(data, (char **)0, 0); /* XXX error check */
fd = open(_PATH_DEVPCI, O_RDWR, 0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
if (ioctl(fd, PCIOCWRITE, &pi) < 0)
err(1, "ioctl(PCIOCWRITE)");
}
static void
chkattached(const char *name)
{
int fd;
struct pci_io pi;
pi.pi_sel = getsel(name);
fd = open(_PATH_DEVPCI, O_RDWR, 0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
if (ioctl(fd, PCIOCATTACHED, &pi) < 0)
err(1, "ioctl(PCIOCATTACHED)");
exitstatus = pi.pi_data ? 0 : 2; /* exit(2), if NOT attached */
printf("%s: %s%s\n", name, pi.pi_data == 0 ? "not " : "", "attached");
}
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