change "foo.h" to <X11/foo.h> for core headers, e.g. X.h, Xpoll.h; change "foo.h", "extensions/foo.h" and "X11/foo.h" to <X11/extensions/foo.h> for extension headers, e.g. Xv.h; change "foo.[ch]" to <X11/Xtrans/foo.[ch]> for Xtrans files.
243 lines
5.7 KiB
C
243 lines
5.7 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/etc/pcitweak.c,v 1.17 2003/08/24 17:37:01 dawes Exp $ */
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/*
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* Copyright (c) 1999-2002 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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/*
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* pcitweak.c
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*
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* Author: David Dawes <dawes@xfree86.org>
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*/
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#include <X11/X.h>
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#include "os.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSproc.h"
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#include "xf86Pci.h"
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#ifdef __CYGWIN__
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#include <getopt.h>
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#endif
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#include <stdarg.h>
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#include <stdlib.h>
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#ifdef __linux__
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/* to get getopt on Linux */
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#ifndef __USE_POSIX2
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#define __USE_POSIX2
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#endif
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#endif
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#include <unistd.h>
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#if defined(ISC) || defined(Lynx)
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extern char *optarg;
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extern int optind, opterr;
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#endif
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pciVideoPtr *xf86PciVideoInfo = NULL;
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static void usage(void);
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static Bool parsePciBusString(const char *id, int *bus, int *device, int *func);
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static char *myname = NULL;
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int
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main(int argc, char *argv[])
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{
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int c;
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PCITAG tag;
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int bus, device, func;
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Bool list = FALSE, rd = FALSE, wr = FALSE;
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Bool byte = FALSE, halfword = FALSE;
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int offset = 0;
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CARD32 value = 0;
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char *id = NULL, *end;
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myname = argv[0];
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while ((c = getopt(argc, argv, "bhlr:w:")) != -1) {
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switch (c) {
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case 'b':
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byte = TRUE;
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break;
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case 'h':
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halfword = TRUE;
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break;
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case 'l':
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list = TRUE;
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break;
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case 'r':
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rd = TRUE;
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id = optarg;
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break;
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case 'w':
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wr = TRUE;
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id = optarg;
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break;
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case '?':
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (list) {
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xf86Verbose = 2;
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xf86EnableIO();
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xf86scanpci(0);
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xf86DisableIO();
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exit(0);
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}
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if (rd && wr)
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usage();
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if (wr && argc != 2)
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usage();
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if (rd && argc != 1)
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usage();
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if (byte && halfword)
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usage();
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if (rd || wr) {
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if (!parsePciBusString(id, &bus, &device, &func)) {
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fprintf(stderr, "%s: Bad PCI ID string\n", myname);
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usage();
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}
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offset = strtoul(argv[0], &end, 0);
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if (*end != '\0') {
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fprintf(stderr, "%s: Bad offset\n", myname);
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usage();
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}
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if (halfword) {
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if (offset % 2) {
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fprintf(stderr, "%s: offset must be a multiple of two\n",
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myname);
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exit(1);
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}
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} else if (!byte) {
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if (offset % 4) {
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fprintf(stderr, "%s: offset must be a multiple of four\n",
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myname);
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exit(1);
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}
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}
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} else {
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usage();
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}
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if (wr) {
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value = strtoul(argv[1], &end, 0);
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if (*end != '\0') {
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fprintf(stderr, "%s: Bad value\n", myname);
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usage();
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}
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}
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xf86EnableIO();
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/*
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* This is needed to setup all the buses. Otherwise secondary buses
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* can't be accessed.
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*/
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xf86scanpci(0);
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tag = pciTag(bus, device, func);
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if (rd) {
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if (byte) {
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printf("0x%02x\n", (unsigned int)pciReadByte(tag, offset) & 0xFF);
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} else if (halfword) {
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printf("0x%04x\n", (unsigned int)pciReadWord(tag, offset) & 0xFFFF);
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} else {
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printf("0x%08lx\n", (unsigned long)pciReadLong(tag, offset));
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}
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} else if (wr) {
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if (byte) {
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pciWriteByte(tag, offset, value & 0xFF);
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} else if (halfword) {
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pciWriteWord(tag, offset, value & 0xFFFF);
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} else {
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pciWriteLong(tag, offset, value);
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}
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}
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xf86DisableIO();
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exit(0);
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}
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static void
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usage()
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{
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fprintf(stderr, "usage:\tpcitweak -l\n"
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"\tpcitweak -r ID [-b | -h] offset\n"
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"\tpcitweak -w ID [-b | -h] offset value\n"
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"\n"
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"\t\t-l -- list\n"
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"\t\t-r -- read\n"
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"\t\t-w -- write\n"
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"\t\t-b -- read/write a single byte\n"
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"\t\t-h -- read/write a single halfword (16 bit)\n"
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"\t\tID -- PCI ID string in form bus:dev:func "
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"(all in hex)\n");
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exit(1);
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}
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Bool
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parsePciBusString(const char *busID, int *bus, int *device, int *func)
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{
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/*
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* The format is assumed to be "bus:device:func", where bus, device
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* and func are hexadecimal integers. func may be omitted and assumed to
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* be zero, although it doing this isn't encouraged.
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*/
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char *p, *s, *end;
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s = strdup(busID);
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p = strtok(s, ":");
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if (p == NULL || *p == 0)
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return FALSE;
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*bus = strtoul(p, &end, 16);
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if (*end != '\0')
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return FALSE;
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p = strtok(NULL, ":");
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if (p == NULL || *p == 0)
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return FALSE;
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*device = strtoul(p, &end, 16);
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if (*end != '\0')
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return FALSE;
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*func = 0;
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p = strtok(NULL, ":");
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if (p == NULL || *p == 0)
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return TRUE;
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*func = strtoul(p, &end, 16);
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if (*end != '\0')
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return FALSE;
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return TRUE;
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}
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#include "xf86getpagesize.c"
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