1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
491 lines
11 KiB
C
491 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2008-2011 Stanislav Sedov <stas@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This utility provides userland access to the cpuctl(4) pseudo-device
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* features.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <err.h>
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#include <sysexits.h>
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#include <dirent.h>
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#include <sys/queue.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/cpuctl.h>
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#include "cpucontrol.h"
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#include "amd.h"
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#include "intel.h"
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#include "via.h"
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int verbosity_level = 0;
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#define DEFAULT_DATADIR "/usr/local/share/cpucontrol"
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#define FLAG_I 0x01
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#define FLAG_M 0x02
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#define FLAG_U 0x04
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#define FLAG_N 0x08
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#define OP_INVAL 0x00
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#define OP_READ 0x01
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#define OP_WRITE 0x02
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#define OP_OR 0x04
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#define OP_AND 0x08
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#define HIGH(val) (uint32_t)(((val) >> 32) & 0xffffffff)
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#define LOW(val) (uint32_t)((val) & 0xffffffff)
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/*
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* Macros for freeing SLISTs, probably must be in /sys/queue.h
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*/
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#define SLIST_FREE(head, field, freef) do { \
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typeof(SLIST_FIRST(head)) __elm0; \
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typeof(SLIST_FIRST(head)) __elm; \
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SLIST_FOREACH_SAFE(__elm, (head), field, __elm0) \
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(void)(freef)(__elm); \
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} while(0);
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struct datadir {
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const char *path;
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SLIST_ENTRY(datadir) next;
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};
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static SLIST_HEAD(, datadir) datadirs = SLIST_HEAD_INITIALIZER(datadirs);
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static struct ucode_handler {
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ucode_probe_t *probe;
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ucode_update_t *update;
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} handlers[] = {
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{ intel_probe, intel_update },
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{ amd10h_probe, amd10h_update },
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{ amd_probe, amd_update },
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{ via_probe, via_update },
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};
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#define NHANDLERS (sizeof(handlers) / sizeof(*handlers))
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static void usage(void);
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static int isdir(const char *path);
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static int do_cpuid(const char *cmdarg, const char *dev);
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static int do_cpuid_count(const char *cmdarg, const char *dev);
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static int do_msr(const char *cmdarg, const char *dev);
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static int do_update(const char *dev);
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static void datadir_add(const char *path);
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static void __dead2
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usage(void)
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{
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const char *name;
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name = getprogname();
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if (name == NULL)
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name = "cpuctl";
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fprintf(stderr, "Usage: %s [-vh] [-d datadir] [-m msr[=value] | "
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"-i level | -i level,level_type | -u] device\n", name);
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exit(EX_USAGE);
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}
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static int
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isdir(const char *path)
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{
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int error;
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struct stat st;
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error = stat(path, &st);
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if (error < 0) {
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WARN(0, "stat(%s)", path);
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return (error);
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}
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return (st.st_mode & S_IFDIR);
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}
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static int
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do_cpuid(const char *cmdarg, const char *dev)
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{
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unsigned int level;
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cpuctl_cpuid_args_t args;
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int fd, error;
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char *endptr;
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assert(cmdarg != NULL);
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assert(dev != NULL);
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level = strtoul(cmdarg, &endptr, 16);
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if (*cmdarg == '\0' || *endptr != '\0') {
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WARNX(0, "incorrect operand: %s", cmdarg);
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usage();
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/* NOTREACHED */
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}
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/*
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* Fill ioctl argument structure.
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*/
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args.level = level;
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fd = open(dev, O_RDONLY);
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if (fd < 0) {
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WARN(0, "error opening %s for reading", dev);
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return (1);
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}
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error = ioctl(fd, CPUCTL_CPUID, &args);
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if (error < 0) {
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WARN(0, "ioctl(%s, CPUCTL_CPUID)", dev);
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close(fd);
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return (error);
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}
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fprintf(stdout, "cpuid level 0x%x: 0x%.8x 0x%.8x 0x%.8x 0x%.8x\n",
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level, args.data[0], args.data[1], args.data[2], args.data[3]);
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close(fd);
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return (0);
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}
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static int
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do_cpuid_count(const char *cmdarg, const char *dev)
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{
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char *cmdarg1, *endptr, *endptr1;
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unsigned int level, level_type;
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cpuctl_cpuid_count_args_t args;
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int fd, error;
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assert(cmdarg != NULL);
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assert(dev != NULL);
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level = strtoul(cmdarg, &endptr, 16);
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if (*cmdarg == '\0' || *endptr == '\0') {
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WARNX(0, "incorrect or missing operand: %s", cmdarg);
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usage();
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/* NOTREACHED */
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}
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/* Locate the comma... */
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cmdarg1 = strstr(endptr, ",");
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/* ... and skip past it */
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cmdarg1 += 1;
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level_type = strtoul(cmdarg1, &endptr1, 16);
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if (*cmdarg1 == '\0' || *endptr1 != '\0') {
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WARNX(0, "incorrect or missing operand: %s", cmdarg);
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usage();
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/* NOTREACHED */
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}
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/*
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* Fill ioctl argument structure.
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*/
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args.level = level;
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args.level_type = level_type;
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fd = open(dev, O_RDONLY);
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if (fd < 0) {
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WARN(0, "error opening %s for reading", dev);
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return (1);
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}
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error = ioctl(fd, CPUCTL_CPUID_COUNT, &args);
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if (error < 0) {
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WARN(0, "ioctl(%s, CPUCTL_CPUID_COUNT)", dev);
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close(fd);
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return (error);
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}
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fprintf(stdout, "cpuid level 0x%x, level_type 0x%x: 0x%.8x 0x%.8x "
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"0x%.8x 0x%.8x\n", level, level_type, args.data[0], args.data[1],
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args.data[2], args.data[3]);
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close(fd);
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return (0);
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}
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static int
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do_msr(const char *cmdarg, const char *dev)
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{
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unsigned int msr;
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cpuctl_msr_args_t args;
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size_t len;
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uint64_t data = 0;
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unsigned long command;
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int do_invert = 0, op;
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int fd, error;
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const char *command_name;
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char *endptr;
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char *p;
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assert(cmdarg != NULL);
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assert(dev != NULL);
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len = strlen(cmdarg);
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if (len == 0) {
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WARNX(0, "MSR register expected");
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usage();
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/* NOTREACHED */
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}
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/*
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* Parse command string.
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*/
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msr = strtoul(cmdarg, &endptr, 16);
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switch (*endptr) {
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case '\0':
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op = OP_READ;
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break;
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case '=':
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op = OP_WRITE;
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break;
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case '&':
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op = OP_AND;
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endptr++;
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break;
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case '|':
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op = OP_OR;
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endptr++;
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break;
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default:
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op = OP_INVAL;
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}
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if (op != OP_READ) { /* Complex operation. */
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if (*endptr != '=')
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op = OP_INVAL;
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else {
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p = ++endptr;
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if (*p == '~') {
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do_invert = 1;
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p++;
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}
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data = strtoull(p, &endptr, 16);
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if (*p == '\0' || *endptr != '\0') {
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WARNX(0, "argument required: %s", cmdarg);
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usage();
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/* NOTREACHED */
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}
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}
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}
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if (op == OP_INVAL) {
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WARNX(0, "invalid operator: %s", cmdarg);
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usage();
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/* NOTREACHED */
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}
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/*
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* Fill ioctl argument structure.
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*/
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args.msr = msr;
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if ((do_invert != 0) ^ (op == OP_AND))
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args.data = ~data;
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else
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args.data = data;
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switch (op) {
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case OP_READ:
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command = CPUCTL_RDMSR;
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command_name = "RDMSR";
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break;
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case OP_WRITE:
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command = CPUCTL_WRMSR;
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command_name = "WRMSR";
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break;
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case OP_OR:
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command = CPUCTL_MSRSBIT;
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command_name = "MSRSBIT";
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break;
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case OP_AND:
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command = CPUCTL_MSRCBIT;
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command_name = "MSRCBIT";
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break;
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default:
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abort();
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}
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fd = open(dev, op == OP_READ ? O_RDONLY : O_WRONLY);
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if (fd < 0) {
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WARN(0, "error opening %s for %s", dev,
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op == OP_READ ? "reading" : "writing");
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return (1);
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}
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error = ioctl(fd, command, &args);
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if (error < 0) {
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WARN(0, "ioctl(%s, CPUCTL_%s (%lu))", dev, command_name, command);
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close(fd);
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return (1);
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}
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if (op == OP_READ)
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fprintf(stdout, "MSR 0x%x: 0x%.8x 0x%.8x\n", msr,
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HIGH(args.data), LOW(args.data));
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close(fd);
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return (0);
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}
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static int
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do_update(const char *dev)
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{
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int fd;
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unsigned int i;
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int error;
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struct ucode_handler *handler;
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struct datadir *dir;
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DIR *dirp;
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struct dirent *direntry;
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char buf[MAXPATHLEN];
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fd = open(dev, O_RDONLY);
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if (fd < 0) {
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WARN(0, "error opening %s for reading", dev);
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return (1);
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}
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/*
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* Find the appropriate handler for device.
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*/
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for (i = 0; i < NHANDLERS; i++)
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if (handlers[i].probe(fd) == 0)
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break;
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if (i < NHANDLERS)
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handler = &handlers[i];
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else {
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WARNX(0, "cannot find the appropriate handler for device");
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close(fd);
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return (1);
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}
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close(fd);
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/*
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* Process every image in specified data directories.
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*/
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SLIST_FOREACH(dir, &datadirs, next) {
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dirp = opendir(dir->path);
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if (dirp == NULL) {
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WARNX(1, "skipping directory %s: not accessible", dir->path);
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continue;
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}
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while ((direntry = readdir(dirp)) != NULL) {
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if (direntry->d_namlen == 0)
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continue;
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error = snprintf(buf, sizeof(buf), "%s/%s", dir->path,
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direntry->d_name);
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if ((unsigned)error >= sizeof(buf))
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WARNX(0, "skipping %s, buffer too short",
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direntry->d_name);
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if (isdir(buf) != 0) {
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WARNX(2, "skipping %s: is a directory", buf);
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continue;
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}
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handler->update(dev, buf);
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}
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error = closedir(dirp);
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if (error != 0)
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WARN(0, "closedir(%s)", dir->path);
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}
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return (0);
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}
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/*
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* Add new data directory to the search list.
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*/
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static void
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datadir_add(const char *path)
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{
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struct datadir *newdir;
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newdir = (struct datadir *)malloc(sizeof(*newdir));
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if (newdir == NULL)
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err(EX_OSERR, "cannot allocate memory");
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newdir->path = path;
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SLIST_INSERT_HEAD(&datadirs, newdir, next);
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}
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int
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main(int argc, char *argv[])
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{
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int c, flags;
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const char *cmdarg;
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const char *dev;
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int error;
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flags = 0;
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error = 0;
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cmdarg = ""; /* To keep gcc3 happy. */
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while ((c = getopt(argc, argv, "d:hi:m:nuv")) != -1) {
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switch (c) {
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case 'd':
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datadir_add(optarg);
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break;
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case 'i':
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flags |= FLAG_I;
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cmdarg = optarg;
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break;
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case 'm':
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flags |= FLAG_M;
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cmdarg = optarg;
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break;
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case 'n':
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flags |= FLAG_N;
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break;
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case 'u':
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flags |= FLAG_U;
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break;
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case 'v':
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verbosity_level++;
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break;
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case 'h':
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/* FALLTHROUGH */
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default:
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usage();
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/* NOTREACHED */
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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 (argc < 1) {
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usage();
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/* NOTREACHED */
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}
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if ((flags & FLAG_N) == 0)
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datadir_add(DEFAULT_DATADIR);
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dev = argv[0];
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c = flags & (FLAG_I | FLAG_M | FLAG_U);
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switch (c) {
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case FLAG_I:
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if (strstr(cmdarg, ",") != NULL)
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error = do_cpuid_count(cmdarg, dev);
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else
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error = do_cpuid(cmdarg, dev);
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break;
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case FLAG_M:
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error = do_msr(cmdarg, dev);
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break;
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case FLAG_U:
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error = do_update(dev);
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break;
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default:
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usage(); /* Only one command can be selected. */
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}
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SLIST_FREE(&datadirs, next, free);
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return (error == 0 ? 0 : 1);
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}
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