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freebsd/usr.sbin/pciconf/pciconf.c
Dag-Erling Smørgrav 7df76a1312 Use larger buffers to read lines from the vendor list.
Trim trailing whitespace and comments before parsing, and skip empty lines.
Skip subvendor / subdevice entries (which start with two tab characters).
Change the scanf() format string to match any amount and type of whitespace
between the device ID and the description text.

MFC after:	3 weeks
2005-08-18 11:11:40 +00:00

582 lines
15 KiB
C

/*
* 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 <err.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"
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 void list_devs(int vendors);
static void list_verbose(struct pci_conf *p);
static char *guess_class(struct pci_conf *p);
static 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 *, int);
static int exitstatus = 0;
static void
usage()
{
fprintf(stderr, "%s\n%s\n%s\n%s\n",
"usage: pciconf -l [-v]",
" pciconf -a selector",
" pciconf -r [-b | -h] selector addr[:addr2]",
" pciconf -w [-b | -h] selector addr value");
exit (1);
}
int
main(int argc, char **argv)
{
int c;
int listmode, readmode, writemode, attachedmode, verbose;
int byte, isshort;
listmode = readmode = writemode = attachedmode = verbose = byte = isshort = 0;
while ((c = getopt(argc, argv, "alrwbhv")) != -1) {
switch(c) {
case 'a':
attachedmode = 1;
break;
case 'l':
listmode = 1;
break;
case 'r':
readmode = 1;
break;
case 'w':
writemode = 1;
break;
case 'b':
byte = 1;
break;
case 'h':
isshort = 1;
break;
case 'v':
verbose = 1;
break;
default:
usage();
}
}
if ((listmode && optind != argc)
|| (writemode && optind + 3 != argc)
|| (readmode && optind + 2 != argc)
|| (attachedmode && optind + 1 != argc))
usage();
if (listmode) {
list_devs(verbose);
} else if (attachedmode) {
chkattached(argv[optind],
byte ? 1 : isshort ? 2 : 4);
} 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(int verbose)
{
int fd;
struct pci_conf_io pc;
struct pci_conf conf[255], *p;
int none_count = 0;
if (verbose)
load_vendors();
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;
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 cheezy 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 desireable.
*/
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:\tclass=0x%06x card=0x%08x "
"chip=0x%08x rev=0x%02x hdr=0x%02x\n",
(p->pd_name && *p->pd_name) ? p->pd_name :
"none",
(p->pd_name && *p->pd_name) ? (int)p->pd_unit :
none_count++,
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);
}
} while (pc.status == PCI_GETCONF_MORE_DEVS);
close(fd);
}
static void
list_verbose(struct pci_conf *p)
{
struct pci_vendor_info *vi;
struct pci_device_info *di;
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);
}
/*
* This is a direct cut-and-paste from the table in sys/dev/pci/pci.c.
*/
static struct
{
int class;
int subclass;
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_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_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_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 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 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)
{
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_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);
}
static struct pcisel
getsel(const char *str)
{
char *ep = strchr(str, '@');
char *epbase;
struct pcisel sel;
if (ep == NULL)
ep = (char *)str;
else
ep++;
epbase = ep;
if (strncmp(ep, "pci", 3) == 0) {
ep += 3;
sel.pc_bus = strtoul(ep, &ep, 0);
if (!ep || *ep++ != ':')
errx(1, "cannot parse selector %s", str);
sel.pc_dev = strtoul(ep, &ep, 0);
if (!ep || *ep != ':') {
sel.pc_func = 0;
} else {
ep++;
sel.pc_func = strtoul(ep, &ep, 0);
}
if (*ep == ':')
ep++;
}
if (*ep != '\x0' || ep == epbase)
errx(1, "cannot parse selector %s", str);
return sel;
}
static void
readone(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)");
printf("%0*x", width*2, pi.pi_data);
}
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 width)
{
int fd;
struct pci_io pi;
pi.pi_sel = getsel(name);
pi.pi_reg = 0;
pi.pi_width = width;
pi.pi_data = 0;
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");
}