a73b93157f
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
101 lines
1.9 KiB
C
101 lines
1.9 KiB
C
/*
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* This file is part of msrtool.
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*
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* Copyright (c) 2009 Andriy Gapon <avg@icyb.net.ua>
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* Copyright (c) 2009 Peter Stuge <peter@stuge.se>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "msrtool.h"
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static int msr_fd[MAX_CORES] = {-1, -1, -1, -1, -1, -1, -1, -1};
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int freebsd_probe(const struct sysdef *system)
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{
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#ifdef __FreeBSD__
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struct stat st;
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return stat("/dev/cpuctl0", &st) == 0;
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#else
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return 0;
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#endif
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}
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int freebsd_open(uint8_t cpu, enum SysModes mode)
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{
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#ifdef __FreeBSD__
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int flags;
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char devname[32];
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if (cpu >= MAX_CORES)
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return 0;
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if (SYS_RDWR == mode)
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flags = O_RDWR;
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else if (SYS_WRONLY == mode)
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flags = O_WRONLY;
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else
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flags = O_RDONLY;
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snprintf(devname, sizeof(devname), "/dev/cpuctl%u", cpu);
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msr_fd[cpu] = open(devname, flags);
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if (msr_fd[cpu] < 0) {
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perror(devname);
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return 0;
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}
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return 1;
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#else
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return 0;
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#endif
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}
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int freebsd_close(uint8_t cpu)
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{
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if (cpu >= MAX_CORES)
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return 0;
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if (msr_fd[cpu] != -1)
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close(msr_fd[cpu]);
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msr_fd[cpu] = -1;
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return 1;
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}
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int freebsd_rdmsr(uint8_t cpu, uint32_t addr, struct msr *val)
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{
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#ifdef __FreeBSD__
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cpuctl_msr_args_t args;
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if (cpu >= MAX_CORES)
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return 0;
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if (msr_fd[cpu] < 0)
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return 0;
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args.msr = addr;
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if (ioctl(msr_fd[cpu], CPUCTL_RDMSR, &args) < 0) {
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perror("ioctl(CPUCTL_RDMSR)");
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return 0;
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}
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val->hi = args.data >> 32;
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val->lo = args.data & 0xffffffff;
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return 1;
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#else
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return 0;
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#endif
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}
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