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
29 #include <sys/types.h>
30 #include <sys/ioctl.h>
31 #include <sys/memrange.h>
46 #define MDF_SETTABLE (1<<0)
48 {"uncacheable", MDF_UNCACHEABLE, MDF_SETTABLE},
49 {"write-combine", MDF_WRITECOMBINE, MDF_SETTABLE},
50 {"write-through", MDF_WRITETHROUGH, MDF_SETTABLE},
51 {"write-back", MDF_WRITEBACK, MDF_SETTABLE},
52 {"write-protect", MDF_WRITEPROTECT, MDF_SETTABLE},
53 {"force", MDF_FORCE, MDF_SETTABLE},
54 {"unknown", MDF_UNKNOWN, 0},
55 {"fixed-base", MDF_FIXBASE, 0},
56 {"fixed-length", MDF_FIXLEN, 0},
57 {"set-by-firmware", MDF_FIRMWARE, 0},
58 {"active", MDF_ACTIVE, MDF_SETTABLE},
59 {"bogus", MDF_BOGUS, 0},
63 static void listfunc(int memfd, int argc, char *argv[]);
64 static void setfunc(int memfd, int argc, char *argv[]);
65 static void clearfunc(int memfd, int argc, char *argv[]);
66 static void helpfunc(int memfd, int argc, char *argv[]);
67 static void help(const char *what);
72 void (*func)(int memfd, int argc, char *argv[]);
75 "List current memory range attributes\n"
77 " -a list all range slots, even those that are inactive",
80 "Set memory range attributes\n"
81 " set -b <base> -l <length> -o <owner> <attribute>\n"
82 " <base> memory range base address\n"
83 " <length> length of memory range in bytes, power of 2\n"
84 " <owner> text identifier for this setting (7 char max)\n"
85 " <attribute> attribute(s) to be applied to this range:\n"
93 "Clear memory range attributes\n"
95 " <owner> all ranges with this owner will be cleared\n"
96 " clear -b <base> -l <length>\n"
97 " <base> memory range base address\n"
98 " <length> length of memory range in bytes, power of 2\n"
99 " Base and length must exactly match an existing range",
101 {NULL, NULL, helpfunc}
105 main(int argc, char *argv[])
112 if ((memfd = open(_PATH_MEM, O_RDONLY)) == -1)
113 err(1, "can't open %s", _PATH_MEM);
115 for (i = 0; functions[i].cmd != NULL; i++)
116 if (!strcmp(argv[1], functions[i].cmd))
118 functions[i].func(memfd, argc - 1, argv + 1);
124 static struct mem_range_desc *
125 mrgetall(int memfd, int *nmr)
127 struct mem_range_desc *mrd;
128 struct mem_range_op mro;
131 if (ioctl(memfd, MEMRANGE_GET, &mro))
132 err(1, "can't size range descriptor array");
134 *nmr = mro.mo_arg[0];
135 mrd = malloc(*nmr * sizeof(struct mem_range_desc));
137 errx(1, "can't allocate %zd bytes for %d range descriptors",
138 *nmr * sizeof(struct mem_range_desc), *nmr);
140 mro.mo_arg[0] = *nmr;
142 if (ioctl(memfd, MEMRANGE_GET, &mro))
143 err(1, "can't fetch range descriptor array");
150 listfunc(int memfd, int argc, char *argv[])
152 struct mem_range_desc *mrd;
159 while ((ch = getopt(argc, argv, "ao:")) != -1)
165 owner = strdup(optarg);
172 mrd = mrgetall(memfd, &nd);
174 for (i = 0; i < nd; i++) {
175 if (!showall && !(mrd[i].mr_flags & MDF_ACTIVE))
177 if (owner && strcmp(mrd[i].mr_owner, owner))
179 printf("0x%" PRIx64 "/0x%" PRIx64 " %.8s ", mrd[i].mr_base, mrd[i].mr_len,
180 mrd[i].mr_owner[0] ? mrd[i].mr_owner : "-");
181 for (j = 0; attrnames[j].name != NULL; j++)
182 if (mrd[i].mr_flags & attrnames[j].val)
183 printf("%s ", attrnames[j].name);
192 setfunc(int memfd, int argc, char *argv[])
194 struct mem_range_desc mrd;
195 struct mem_range_op mro;
203 strcpy(mrd.mr_owner, "user");
204 while ((ch = getopt(argc, argv, "b:l:o:")) != -1)
207 mrd.mr_base = strtouq(optarg, &ep, 0);
208 if ((ep == optarg) || (*ep != 0))
212 mrd.mr_len = strtouq(optarg, &ep, 0);
213 if ((ep == optarg) || (*ep != 0))
217 if ((*optarg == 0) || (strlen(optarg) > 7))
219 strcpy(mrd.mr_owner, optarg);
234 for (i = 0; attrnames[i].name != NULL; i++) {
235 if (!strcmp(attrnames[i].name, argv[0])) {
236 if (!(attrnames[i].kind & MDF_SETTABLE))
238 mrd.mr_flags |= attrnames[i].val;
242 if (attrnames[i].name == NULL)
249 if (ioctl(memfd, MEMRANGE_SET, &mro))
250 err(1, "can't set range");
254 clearfunc(int memfd, int argc, char *argv[])
256 struct mem_range_desc mrd, *mrdp;
257 struct mem_range_op mro;
265 while ((ch = getopt(argc, argv, "b:l:o:")) != -1)
268 mrd.mr_base = strtouq(optarg, &ep, 0);
269 if ((ep == optarg) || (*ep != 0))
273 mrd.mr_len = strtouq(optarg, &ep, 0);
274 if ((ep == optarg) || (*ep != 0))
278 if ((*optarg == 0) || (strlen(optarg) > 7))
280 owner = strdup(optarg);
290 if ((mrd.mr_base != 0) || (mrd.mr_len != 0))
293 mrdp = mrgetall(memfd, &nd);
294 mro.mo_arg[0] = MEMRANGE_SET_REMOVE;
295 for (i = 0; i < nd; i++) {
296 if (!strcmp(owner, mrdp[i].mr_owner) &&
297 (mrdp[i].mr_flags & MDF_ACTIVE) &&
298 !(mrdp[i].mr_flags & MDF_FIXACTIVE)) {
300 mro.mo_desc = mrdp + i;
301 if (ioctl(memfd, MEMRANGE_SET, &mro))
302 warn("couldn't clear range owned by '%s'", owner);
305 } else if (mrd.mr_len != 0) {
306 /* clear-by-base/len */
307 mro.mo_arg[0] = MEMRANGE_SET_REMOVE;
309 if (ioctl(memfd, MEMRANGE_SET, &mro))
310 err(1, "couldn't clear range");
317 helpfunc(__unused int memfd, __unused int argc, char *argv[])
323 help(const char *what)
328 /* find a function that matches */
329 for (i = 0; functions[i].cmd != NULL; i++)
330 if (!strcmp(what, functions[i].cmd)) {
331 fprintf(stderr, "%s\n", functions[i].desc);
334 fprintf(stderr, "Unknown command '%s'\n", what);
337 /* print general help */
338 fprintf(stderr, "Valid commands are :\n");
339 for (i = 0; functions[i].cmd != NULL; i++)
340 fprintf(stderr, " %s\n", functions[i].cmd);
341 fprintf(stderr, "Use help <command> for command-specific help\n");