FreeBSD-5.3/usr.sbin/pciconf/pciconf.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: src/usr.sbin/pciconf/pciconf.c,v 1.23 2004/08/07 16:36:46 imp Exp $";
#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_DISPLAY, -1, "display"},
{PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"},
{PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"},
{PCIC_MULTIMEDIA, -1, "multimedia"},
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"},
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"},
{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_OTHER, "PCI-unknown"},
{PCIC_SIMPLECOMM, -1, "simple comms"},
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"},
{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_INPUTDEV, -1, "input device"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"},
{PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"},
{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"},
{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[100], str[100];
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;
/* Check for vendor entry */
if ((buf[0] != '\t') && (sscanf(buf, "%04x\t%[^\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\t%[^\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");
}