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Initial version of the user land code for the PCI config register

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access functions. Written by Garrett Wollman and modified by me to
better match my view of the (PCI) world.

Submitted by:	wollman
This commit is contained in:
Stefan Eßer 1996-10-22 20:27:47 +00:00
parent 10e966fae4
commit d5ee39ef58
3 changed files with 213 additions and 0 deletions
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8
usr.sbin/pciconf/Makefile Normal file
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# $ANA: Makefile,v 1.1.1.1 1996/09/25 21:12:57 wollman Exp $
PROG= pciconf
NOMAN=
CFLAGS+= -I/sys
.include <bsd.prog.mk>

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usr.sbin/pciconf/pathnames.h Normal file
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#define _PATH_DEVPCI "/dev/pci"

204
usr.sbin/pciconf/pciconf.c Normal file
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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.
*
* $ANA: pciconf.c,v 1.1.1.1 1996/09/25 21:12:57 wollman Exp $
*/
#include <sys/types.h>
#include <sys/fcntl.h>
#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include "pathnames.h"
static void list_devs(void);
static void readit(const char *, const char *, int);
static void writeit(const char *, const char *, const char *, int);
static void
usage(const char *argv0) {
fprintf(stderr, "usage:\n\t%s -l\n"
"\t%s [-r|-w] [-bh] sel addr [value]\n",
argv0, argv0);
}
int
main(int argc, char **argv)
{
int c;
int listmode, readmode, writemode;
int byte, isshort;
listmode = readmode = writemode = byte = isshort = 0;
while ((c = getopt(argc, argv, "lrwbh")) != EOF) {
switch(c) {
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;
default:
usage(argv[0]);
}
}
if ((listmode && optind != argc)
|| (writemode && optind + 3 != argc)
|| (readmode && optind + 2 != argc))
usage(argv[0]);
if (listmode) {
list_devs();
} 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(argv[0]);
}
return 0;
}
static void
list_devs(void)
{
int fd;
struct pci_conf_io pc;
struct pci_conf conf[255], *p;
fd = open(_PATH_DEVPCI, O_RDONLY, 0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
pc.pci_len = sizeof(conf);
pc.pci_buf = conf;
if (ioctl(fd, PCIOCGETCONF, &pc) < 0)
err(1, "ioctl(PCIOCGETCONF)");
close(fd);
for (p = conf; p < &conf[pc.pci_len / sizeof conf[0]]; p++) {
printf("pci%d:%d:%d:\tclass=0x%06x card=0x%08lx chip=0x%08lx rev=0x%02x\n",
p->pc_sel.pc_bus, p->pc_sel.pc_dev, p->pc_sel.pc_func,
p->pc_class >> 8, p->pc_subid,
p->pc_devid, p->pc_class & 0xff);
}
}
static struct pcisel
getsel(const char *str)
{
char *ep = (char*) str;
struct pcisel sel;
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 || ep == str)
errx(1, "cannot parse selector %s", str);
return sel;
}
static void
readit(const char *name, const char *reg, 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;
fd = open(_PATH_DEVPCI, O_RDWR, 0);
if (fd < 0)
err(1, "%s", _PATH_DEVPCI);
if (ioctl(fd, PCIOCREAD, &pi) < 0)
err(1, "ioctl(PCIOCREAD)");
printf("0x%08x\n", pi.pi_data);
}
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)");
}