mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
d3522c026f
on by a logical not instead of the entire expression. Approved by: cperciva MFC after: 3 days
343 lines
9.0 KiB
C
343 lines
9.0 KiB
C
/*-
|
|
* Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/memrange.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <inttypes.h>
|
|
#include <paths.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
static struct {
|
|
const char *name;
|
|
int val;
|
|
int kind;
|
|
#define MDF_SETTABLE (1<<0)
|
|
} attrnames[] = {
|
|
{"uncacheable", MDF_UNCACHEABLE, MDF_SETTABLE},
|
|
{"write-combine", MDF_WRITECOMBINE, MDF_SETTABLE},
|
|
{"write-through", MDF_WRITETHROUGH, MDF_SETTABLE},
|
|
{"write-back", MDF_WRITEBACK, MDF_SETTABLE},
|
|
{"write-protect", MDF_WRITEPROTECT, MDF_SETTABLE},
|
|
{"force", MDF_FORCE, MDF_SETTABLE},
|
|
{"unknown", MDF_UNKNOWN, 0},
|
|
{"fixed-base", MDF_FIXBASE, 0},
|
|
{"fixed-length", MDF_FIXLEN, 0},
|
|
{"set-by-firmware", MDF_FIRMWARE, 0},
|
|
{"active", MDF_ACTIVE, MDF_SETTABLE},
|
|
{"bogus", MDF_BOGUS, 0},
|
|
{NULL, 0, 0}
|
|
};
|
|
|
|
static void listfunc(int memfd, int argc, char *argv[]);
|
|
static void setfunc(int memfd, int argc, char *argv[]);
|
|
static void clearfunc(int memfd, int argc, char *argv[]);
|
|
static void helpfunc(int memfd, int argc, char *argv[]);
|
|
static void help(const char *what);
|
|
|
|
static struct {
|
|
const char *cmd;
|
|
const char *desc;
|
|
void (*func)(int memfd, int argc, char *argv[]);
|
|
} functions[] = {
|
|
{"list",
|
|
"List current memory range attributes\n"
|
|
" list [-a]\n"
|
|
" -a list all range slots, even those that are inactive",
|
|
listfunc},
|
|
{"set",
|
|
"Set memory range attributes\n"
|
|
" set -b <base> -l <length> -o <owner> <attribute>\n"
|
|
" <base> memory range base address\n"
|
|
" <length> length of memory range in bytes, power of 2\n"
|
|
" <owner> text identifier for this setting (7 char max)\n"
|
|
" <attribute> attribute(s) to be applied to this range:\n"
|
|
" uncacheable\n"
|
|
" write-combine\n"
|
|
" write-through\n"
|
|
" write-back\n"
|
|
" write-protect",
|
|
setfunc},
|
|
{"clear",
|
|
"Clear memory range attributes\n"
|
|
" clear -o <owner>\n"
|
|
" <owner> all ranges with this owner will be cleared\n"
|
|
" clear -b <base> -l <length>\n"
|
|
" <base> memory range base address\n"
|
|
" <length> length of memory range in bytes, power of 2\n"
|
|
" Base and length must exactly match an existing range",
|
|
clearfunc},
|
|
{NULL, NULL, helpfunc}
|
|
};
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int i, memfd;
|
|
|
|
if (argc < 2) {
|
|
help(NULL);
|
|
} else {
|
|
if ((memfd = open(_PATH_MEM, O_RDONLY)) == -1)
|
|
err(1, "can't open %s", _PATH_MEM);
|
|
|
|
for (i = 0; functions[i].cmd != NULL; i++)
|
|
if (!strcmp(argv[1], functions[i].cmd))
|
|
break;
|
|
functions[i].func(memfd, argc - 1, argv + 1);
|
|
close(memfd);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static struct mem_range_desc *
|
|
mrgetall(int memfd, int *nmr)
|
|
{
|
|
struct mem_range_desc *mrd;
|
|
struct mem_range_op mro;
|
|
|
|
mro.mo_arg[0] = 0;
|
|
if (ioctl(memfd, MEMRANGE_GET, &mro))
|
|
err(1, "can't size range descriptor array");
|
|
|
|
*nmr = mro.mo_arg[0];
|
|
mrd = malloc(*nmr * sizeof(struct mem_range_desc));
|
|
if (mrd == NULL)
|
|
errx(1, "can't allocate %zd bytes for %d range descriptors",
|
|
*nmr * sizeof(struct mem_range_desc), *nmr);
|
|
|
|
mro.mo_arg[0] = *nmr;
|
|
mro.mo_desc = mrd;
|
|
if (ioctl(memfd, MEMRANGE_GET, &mro))
|
|
err(1, "can't fetch range descriptor array");
|
|
|
|
return(mrd);
|
|
}
|
|
|
|
|
|
static void
|
|
listfunc(int memfd, int argc, char *argv[])
|
|
{
|
|
struct mem_range_desc *mrd;
|
|
int nd, i, j;
|
|
int ch;
|
|
int showall = 0;
|
|
char *owner;
|
|
|
|
owner = NULL;
|
|
while ((ch = getopt(argc, argv, "ao:")) != -1)
|
|
switch(ch) {
|
|
case 'a':
|
|
showall = 1;
|
|
break;
|
|
case 'o':
|
|
owner = strdup(optarg);
|
|
break;
|
|
case '?':
|
|
default:
|
|
help("list");
|
|
}
|
|
|
|
mrd = mrgetall(memfd, &nd);
|
|
|
|
for (i = 0; i < nd; i++) {
|
|
if (!showall && !(mrd[i].mr_flags & MDF_ACTIVE))
|
|
continue;
|
|
if (owner && strcmp(mrd[i].mr_owner, owner))
|
|
continue;
|
|
printf("0x%" PRIx64 "/0x%" PRIx64 " %.8s ", mrd[i].mr_base, mrd[i].mr_len,
|
|
mrd[i].mr_owner[0] ? mrd[i].mr_owner : "-");
|
|
for (j = 0; attrnames[j].name != NULL; j++)
|
|
if (mrd[i].mr_flags & attrnames[j].val)
|
|
printf("%s ", attrnames[j].name);
|
|
printf("\n");
|
|
}
|
|
free(mrd);
|
|
if (owner)
|
|
free(owner);
|
|
}
|
|
|
|
static void
|
|
setfunc(int memfd, int argc, char *argv[])
|
|
{
|
|
struct mem_range_desc mrd;
|
|
struct mem_range_op mro;
|
|
int i;
|
|
int ch;
|
|
char *ep;
|
|
|
|
mrd.mr_base = 0;
|
|
mrd.mr_len = 0;
|
|
mrd.mr_flags = 0;
|
|
strcpy(mrd.mr_owner, "user");
|
|
while ((ch = getopt(argc, argv, "b:l:o:")) != -1)
|
|
switch(ch) {
|
|
case 'b':
|
|
mrd.mr_base = strtouq(optarg, &ep, 0);
|
|
if ((ep == optarg) || (*ep != 0))
|
|
help("set");
|
|
break;
|
|
case 'l':
|
|
mrd.mr_len = strtouq(optarg, &ep, 0);
|
|
if ((ep == optarg) || (*ep != 0))
|
|
help("set");
|
|
break;
|
|
case 'o':
|
|
if ((*optarg == 0) || (strlen(optarg) > 7))
|
|
help("set");
|
|
strcpy(mrd.mr_owner, optarg);
|
|
break;
|
|
|
|
case '?':
|
|
default:
|
|
help("set");
|
|
}
|
|
|
|
if (mrd.mr_len == 0)
|
|
help("set");
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
while(argc--) {
|
|
for (i = 0; attrnames[i].name != NULL; i++) {
|
|
if (!strcmp(attrnames[i].name, argv[0])) {
|
|
if (!(attrnames[i].kind & MDF_SETTABLE))
|
|
help("flags");
|
|
mrd.mr_flags |= attrnames[i].val;
|
|
break;
|
|
}
|
|
}
|
|
if (attrnames[i].name == NULL)
|
|
help("flags");
|
|
argv++;
|
|
}
|
|
|
|
mro.mo_desc = &mrd;
|
|
mro.mo_arg[0] = 0;
|
|
if (ioctl(memfd, MEMRANGE_SET, &mro))
|
|
err(1, "can't set range");
|
|
}
|
|
|
|
static void
|
|
clearfunc(int memfd, int argc, char *argv[])
|
|
{
|
|
struct mem_range_desc mrd, *mrdp;
|
|
struct mem_range_op mro;
|
|
int i, nd;
|
|
int ch;
|
|
char *ep, *owner;
|
|
|
|
mrd.mr_base = 0;
|
|
mrd.mr_len = 0;
|
|
owner = NULL;
|
|
while ((ch = getopt(argc, argv, "b:l:o:")) != -1)
|
|
switch(ch) {
|
|
case 'b':
|
|
mrd.mr_base = strtouq(optarg, &ep, 0);
|
|
if ((ep == optarg) || (*ep != 0))
|
|
help("clear");
|
|
break;
|
|
case 'l':
|
|
mrd.mr_len = strtouq(optarg, &ep, 0);
|
|
if ((ep == optarg) || (*ep != 0))
|
|
help("clear");
|
|
break;
|
|
case 'o':
|
|
if ((*optarg == 0) || (strlen(optarg) > 7))
|
|
help("clear");
|
|
owner = strdup(optarg);
|
|
break;
|
|
|
|
case '?':
|
|
default:
|
|
help("clear");
|
|
}
|
|
|
|
if (owner != NULL) {
|
|
/* clear-by-owner */
|
|
if ((mrd.mr_base != 0) || (mrd.mr_len != 0))
|
|
help("clear");
|
|
|
|
mrdp = mrgetall(memfd, &nd);
|
|
mro.mo_arg[0] = MEMRANGE_SET_REMOVE;
|
|
for (i = 0; i < nd; i++) {
|
|
if (!strcmp(owner, mrdp[i].mr_owner) &&
|
|
(mrdp[i].mr_flags & MDF_ACTIVE) &&
|
|
!(mrdp[i].mr_flags & MDF_FIXACTIVE)) {
|
|
|
|
mro.mo_desc = mrdp + i;
|
|
if (ioctl(memfd, MEMRANGE_SET, &mro))
|
|
warn("couldn't clear range owned by '%s'", owner);
|
|
}
|
|
}
|
|
} else if (mrd.mr_len != 0) {
|
|
/* clear-by-base/len */
|
|
mro.mo_arg[0] = MEMRANGE_SET_REMOVE;
|
|
mro.mo_desc = &mrd;
|
|
if (ioctl(memfd, MEMRANGE_SET, &mro))
|
|
err(1, "couldn't clear range");
|
|
} else {
|
|
help("clear");
|
|
}
|
|
}
|
|
|
|
static void
|
|
helpfunc(__unused int memfd, __unused int argc, char *argv[])
|
|
{
|
|
help(argv[1]);
|
|
}
|
|
|
|
static void
|
|
help(const char *what)
|
|
{
|
|
int i;
|
|
|
|
if (what != NULL) {
|
|
/* find a function that matches */
|
|
for (i = 0; functions[i].cmd != NULL; i++)
|
|
if (!strcmp(what, functions[i].cmd)) {
|
|
fprintf(stderr, "%s\n", functions[i].desc);
|
|
return;
|
|
}
|
|
fprintf(stderr, "Unknown command '%s'\n", what);
|
|
}
|
|
|
|
/* print general help */
|
|
fprintf(stderr, "Valid commands are :\n");
|
|
for (i = 0; functions[i].cmd != NULL; i++)
|
|
fprintf(stderr, " %s\n", functions[i].cmd);
|
|
fprintf(stderr, "Use help <command> for command-specific help\n");
|
|
}
|