2 * Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/usr.sbin/memcontrol/memcontrol.c,v 1.3.4.5 2002/09/16 21:58:41 dwmalone Exp $
27 * $DragonFly: src/usr.sbin/memcontrol/memcontrol.c,v 1.3 2005/03/18 01:57:58 cpressey Exp $
30 #include <sys/types.h>
31 #include <sys/ioctl.h>
32 #include <sys/memrange.h>
47 #define MDF_SETTABLE (1<<0)
49 {"uncacheable", MDF_UNCACHEABLE, MDF_SETTABLE},
50 {"write-combine", MDF_WRITECOMBINE, MDF_SETTABLE},
51 {"write-through", MDF_WRITETHROUGH, MDF_SETTABLE},
52 {"write-back", MDF_WRITEBACK, MDF_SETTABLE},
53 {"write-protect", MDF_WRITEPROTECT, MDF_SETTABLE},
54 {"force", MDF_FORCE, MDF_SETTABLE},
55 {"unknown", MDF_UNKNOWN, 0},
56 {"fixed-base", MDF_FIXBASE, 0},
57 {"fixed-length", MDF_FIXLEN, 0},
58 {"set-by-firmware", MDF_FIRMWARE, 0},
59 {"active", MDF_ACTIVE, MDF_SETTABLE},
60 {"bogus", MDF_BOGUS, 0},
64 static void listfunc(int memfd, int argc, char *argv[]);
65 static void setfunc(int memfd, int argc, char *argv[]);
66 static void clearfunc(int memfd, int argc, char *argv[]);
67 static void helpfunc(int memfd, int argc, char *argv[]);
68 static void help(const char *what);
74 void (*func)(int memfd, int argc, char *argv[]);
77 "List current memory range attributes\n"
79 " -a list all range slots, even those that are inactive",
82 "Set memory range attributes\n"
83 " set -b <base> -l <length> -o <owner> <attribute>\n"
84 " <base> memory range base address\n"
85 " <length> length of memory range in bytes, power of 2\n"
86 " <owner> text identifier for this setting (7 char max)\n"
87 " <attribute> attribute(s) to be applied to this range:\n"
95 "Clear memory range attributes\n"
97 " <owner> all ranges with this owner will be cleared\n"
98 " clear -b <base> -l <length>\n"
99 " <base> memory range base address\n"
100 " <length> length of memory range in bytes, power of 2\n"
101 " Base and length must exactly match an existing range",
103 {NULL, NULL, helpfunc}
107 main(int argc, char *argv[])
114 if ((memfd = open(_PATH_MEM, O_RDONLY)) == -1)
115 err(1, "can't open %s", _PATH_MEM);
117 for (i = 0; functions[i].cmd != NULL; i++)
118 if (!strcmp(argv[1], functions[i].cmd))
120 functions[i].func(memfd, argc - 1, argv + 1);
126 static struct mem_range_desc *
127 mrgetall(int memfd, int *nmr)
129 struct mem_range_desc *mrd;
130 struct mem_range_op mro;
133 if (ioctl(memfd, MEMRANGE_GET, &mro))
134 err(1, "can't size range descriptor array");
136 *nmr = mro.mo_arg[0];
137 mrd = malloc(*nmr * sizeof(struct mem_range_desc));
139 errx(1, "can't allocate %zu bytes for %d range descriptors",
140 *nmr * sizeof(struct mem_range_desc), *nmr);
142 mro.mo_arg[0] = *nmr;
144 if (ioctl(memfd, MEMRANGE_GET, &mro))
145 err(1, "can't fetch range descriptor array");
152 listfunc(int memfd, int argc, char *argv[])
154 struct mem_range_desc *mrd;
161 while ((ch = getopt(argc, argv, "ao:")) != -1)
167 owner = strdup(optarg);
174 mrd = mrgetall(memfd, &nd);
176 for (i = 0; i < nd; i++) {
177 if (!showall && !(mrd[i].mr_flags & MDF_ACTIVE))
179 if (owner && strcmp(mrd[i].mr_owner, owner))
181 printf("%jx/%jx %.8s ",
182 (uintmax_t)mrd[i].mr_base, (uintmax_t)mrd[i].mr_len,
183 mrd[i].mr_owner[0] ? mrd[i].mr_owner : "-");
184 for (j = 0; attrnames[j].name != NULL; j++)
185 if (mrd[i].mr_flags & attrnames[j].val)
186 printf("%s ", attrnames[j].name);
195 setfunc(int memfd, int argc, char *argv[])
197 struct mem_range_desc mrd;
198 struct mem_range_op mro;
206 strcpy(mrd.mr_owner, "user");
207 while ((ch = getopt(argc, argv, "b:l:o:")) != -1)
210 mrd.mr_base = strtouq(optarg, &ep, 0);
211 if ((ep == optarg) || (*ep != 0))
215 mrd.mr_len = strtouq(optarg, &ep, 0);
216 if ((ep == optarg) || (*ep != 0))
220 if ((*optarg == 0) || (strlen(optarg) > 7))
222 strcpy(mrd.mr_owner, optarg);
237 for (i = 0; attrnames[i].name != NULL; i++) {
238 if (!strcmp(attrnames[i].name, argv[0])) {
239 if (!attrnames[i].kind & MDF_SETTABLE)
241 mrd.mr_flags |= attrnames[i].val;
245 if (attrnames[i].name == NULL)
252 if (ioctl(memfd, MEMRANGE_SET, &mro))
253 err(1, "can't set range");
257 clearfunc(int memfd, int argc, char *argv[])
259 struct mem_range_desc mrd, *mrdp;
260 struct mem_range_op mro;
268 while ((ch = getopt(argc, argv, "b:l:o:")) != -1)
271 mrd.mr_base = strtouq(optarg, &ep, 0);
272 if ((ep == optarg) || (*ep != 0))
276 mrd.mr_len = strtouq(optarg, &ep, 0);
277 if ((ep == optarg) || (*ep != 0))
281 if ((*optarg == 0) || (strlen(optarg) > 7))
283 owner = strdup(optarg);
293 if ((mrd.mr_base != 0) || (mrd.mr_len != 0))
296 mrdp = mrgetall(memfd, &nd);
297 mro.mo_arg[0] = MEMRANGE_SET_REMOVE;
298 for (i = 0; i < nd; i++) {
299 if (!strcmp(owner, mrdp[i].mr_owner) &&
300 (mrdp[i].mr_flags & MDF_ACTIVE) &&
301 !(mrdp[i].mr_flags & MDF_FIXACTIVE)) {
303 mro.mo_desc = mrdp + i;
304 if (ioctl(memfd, MEMRANGE_SET, &mro))
305 warn("couldn't clear range owned by '%s'", owner);
308 } else if (mrd.mr_len != 0) {
309 /* clear-by-base/len */
310 mro.mo_arg[0] = MEMRANGE_SET_REMOVE;
312 if (ioctl(memfd, MEMRANGE_SET, &mro))
313 err(1, "couldn't clear range");
320 helpfunc(int memfd __unused, int argc __unused, char *argv[])
326 help(const char *what)
331 /* find a function that matches */
332 for (i = 0; functions[i].cmd != NULL; i++)
333 if (!strcmp(what, functions[i].cmd)) {
334 fprintf(stderr, "%s\n", functions[i].desc);
337 fprintf(stderr, "Unknown command '%s'\n", what);
340 /* print general help */
341 fprintf(stderr, "Valid commands are :\n");
342 for (i = 0; functions[i].cmd != NULL; i++)
343 fprintf(stderr, " %s\n", functions[i].cmd);
344 fprintf(stderr, "Use help <command> for command-specific help\n");