75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/*
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Vendor Reset - Vendor Specific Reset
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Copyright (C) 2020 Geoffrey McRae <geoff@hostfission.com>
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Copyright (C) 2020 Adam Madsen <adam@ajmadsen.com>
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include "vendor-reset.h"
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#include "ucommon.h"
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void help_(const char *prog);
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void help_(const char *prog)
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{
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fprintf(stderr,
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"Usage:\n"
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" %s [domain:]bus:dev.fn\n",
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prog);
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exit(1);
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}
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#define help() help_(argv[0])
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int main(int argc, char *argv[])
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{
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int ret;
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struct dbdf devref;
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if (argc < 2)
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help();
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if (parse_dbdf(argv[1], &devref))
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help();
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int fd = open("/dev/vendor_reset", O_RDWR);
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if (fd < 0)
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{
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perror("open");
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return fd;
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}
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struct vendor_reset_ioctl dev = {
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.domain = devref.domain,
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.bus = devref.bus,
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.devfn = ((devref.device & 0x1f) << 3) | (devref.function & 0x07),
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};
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ret = ioctl(fd, VENDOR_RESET_RESET, &dev);
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if (ret < 0)
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{
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perror("ioctl");
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goto err;
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}
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err:
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close(fd);
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return 0;
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}
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