openfirmio.c revision 1.2.2.2
1 1.2.2.2 bouyer /* $NetBSD: openfirmio.c,v 1.2.2.2 2000/11/22 16:03:57 bouyer Exp $ */ 2 1.2.2.2 bouyer 3 1.2.2.2 bouyer /* 4 1.2.2.2 bouyer * Copyright (c) 1992, 1993 5 1.2.2.2 bouyer * The Regents of the University of California. All rights reserved. 6 1.2.2.2 bouyer * 7 1.2.2.2 bouyer * This software was developed by the Computer Systems Engineering group 8 1.2.2.2 bouyer * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 1.2.2.2 bouyer * contributed to Berkeley. 10 1.2.2.2 bouyer * 11 1.2.2.2 bouyer * All advertising materials mentioning features or use of this software 12 1.2.2.2 bouyer * must display the following acknowledgement: 13 1.2.2.2 bouyer * This product includes software developed by the University of 14 1.2.2.2 bouyer * California, Lawrence Berkeley Laboratory. 15 1.2.2.2 bouyer * 16 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 17 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 18 1.2.2.2 bouyer * are met: 19 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 20 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 21 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 22 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 23 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 24 1.2.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 25 1.2.2.2 bouyer * must display the following acknowledgement: 26 1.2.2.2 bouyer * This product includes software developed by the University of 27 1.2.2.2 bouyer * California, Berkeley and its contributors. 28 1.2.2.2 bouyer * 4. Neither the name of the University nor the names of its contributors 29 1.2.2.2 bouyer * may be used to endorse or promote products derived from this software 30 1.2.2.2 bouyer * without specific prior written permission. 31 1.2.2.2 bouyer * 32 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 1.2.2.2 bouyer * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 1.2.2.2 bouyer * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 1.2.2.2 bouyer * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 1.2.2.2 bouyer * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 1.2.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 1.2.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 1.2.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 1.2.2.2 bouyer * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 1.2.2.2 bouyer * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 1.2.2.2 bouyer * SUCH DAMAGE. 43 1.2.2.2 bouyer * 44 1.2.2.2 bouyer * @(#)openfirm.c 8.1 (Berkeley) 6/11/93 45 1.2.2.2 bouyer */ 46 1.2.2.2 bouyer 47 1.2.2.2 bouyer #include <sys/param.h> 48 1.2.2.2 bouyer #include <sys/systm.h> 49 1.2.2.2 bouyer #include <sys/errno.h> 50 1.2.2.2 bouyer #include <sys/fcntl.h> 51 1.2.2.2 bouyer #include <sys/ioctl.h> 52 1.2.2.2 bouyer #include <sys/malloc.h> 53 1.2.2.2 bouyer #include <sys/conf.h> 54 1.2.2.2 bouyer #include <sys/device.h> 55 1.2.2.2 bouyer 56 1.2.2.2 bouyer #include <dev/ofw/openfirm.h> 57 1.2.2.2 bouyer #include <dev/ofw/openfirmio.h> 58 1.2.2.2 bouyer 59 1.2.2.2 bouyer static int lastnode; /* speed hack */ 60 1.2.2.2 bouyer 61 1.2.2.2 bouyer static int openfirmcheckid (int, int); 62 1.2.2.2 bouyer static int openfirmgetstr (int, char *, char **); 63 1.2.2.2 bouyer 64 1.2.2.2 bouyer void openfirmattach (int); 65 1.2.2.2 bouyer 66 1.2.2.2 bouyer void 67 1.2.2.2 bouyer openfirmattach(int num) 68 1.2.2.2 bouyer { 69 1.2.2.2 bouyer /* nothing */ 70 1.2.2.2 bouyer } 71 1.2.2.2 bouyer 72 1.2.2.2 bouyer int 73 1.2.2.2 bouyer openfirmopen(dev_t dev, int flags, int mode, struct proc *p) 74 1.2.2.2 bouyer { 75 1.2.2.2 bouyer return (0); 76 1.2.2.2 bouyer } 77 1.2.2.2 bouyer 78 1.2.2.2 bouyer int 79 1.2.2.2 bouyer openfirmclose(dev_t dev, int flags, int mode, struct proc *p) 80 1.2.2.2 bouyer { 81 1.2.2.2 bouyer 82 1.2.2.2 bouyer return (0); 83 1.2.2.2 bouyer } 84 1.2.2.2 bouyer 85 1.2.2.2 bouyer /* 86 1.2.2.2 bouyer * Verify target ID is valid (exists in the OPENPROM tree), as 87 1.2.2.2 bouyer * listed from node ID sid forward. 88 1.2.2.2 bouyer */ 89 1.2.2.2 bouyer static int 90 1.2.2.2 bouyer openfirmcheckid(int sid, int tid) 91 1.2.2.2 bouyer { 92 1.2.2.2 bouyer 93 1.2.2.2 bouyer for (; sid != 0; sid = OF_peer(sid)) 94 1.2.2.2 bouyer if (sid == tid || openfirmcheckid(OF_child(sid), tid)) 95 1.2.2.2 bouyer return (1); 96 1.2.2.2 bouyer 97 1.2.2.2 bouyer return (0); 98 1.2.2.2 bouyer } 99 1.2.2.2 bouyer 100 1.2.2.2 bouyer static int 101 1.2.2.2 bouyer openfirmgetstr(int len, char *user, char **cpp) 102 1.2.2.2 bouyer { 103 1.2.2.2 bouyer int error; 104 1.2.2.2 bouyer char *cp; 105 1.2.2.2 bouyer 106 1.2.2.2 bouyer /* Reject obvious bogus requests */ 107 1.2.2.2 bouyer if ((u_int)len > (8 * 1024) - 1) 108 1.2.2.2 bouyer return (ENAMETOOLONG); 109 1.2.2.2 bouyer 110 1.2.2.2 bouyer *cpp = cp = malloc(len + 1, M_TEMP, M_WAITOK); 111 1.2.2.2 bouyer error = copyin(user, cp, len); 112 1.2.2.2 bouyer cp[len] = '\0'; 113 1.2.2.2 bouyer return (error); 114 1.2.2.2 bouyer } 115 1.2.2.2 bouyer 116 1.2.2.2 bouyer int 117 1.2.2.2 bouyer openfirmioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 118 1.2.2.2 bouyer { 119 1.2.2.2 bouyer struct ofiocdesc *of; 120 1.2.2.2 bouyer int node, len, ok, error, s; 121 1.2.2.2 bouyer char *name, *value; 122 1.2.2.2 bouyer 123 1.2.2.2 bouyer if (cmd == OFIOCGETOPTNODE) { 124 1.2.2.2 bouyer s = splhigh(); 125 1.2.2.2 bouyer *(int *) data = OF_finddevice("/options"); 126 1.2.2.2 bouyer splx(s); 127 1.2.2.2 bouyer return (0); 128 1.2.2.2 bouyer } 129 1.2.2.2 bouyer 130 1.2.2.2 bouyer /* Verify node id */ 131 1.2.2.2 bouyer of = (struct ofiocdesc *)data; 132 1.2.2.2 bouyer node = of->of_nodeid; 133 1.2.2.2 bouyer if (node != 0 && node != lastnode) { 134 1.2.2.2 bouyer /* Not an easy one, must search for it */ 135 1.2.2.2 bouyer s = splhigh(); 136 1.2.2.2 bouyer ok = openfirmcheckid(OF_peer(0), node); 137 1.2.2.2 bouyer splx(s); 138 1.2.2.2 bouyer if (!ok) 139 1.2.2.2 bouyer return (EINVAL); 140 1.2.2.2 bouyer lastnode = node; 141 1.2.2.2 bouyer } 142 1.2.2.2 bouyer 143 1.2.2.2 bouyer name = value = NULL; 144 1.2.2.2 bouyer error = 0; 145 1.2.2.2 bouyer switch (cmd) { 146 1.2.2.2 bouyer 147 1.2.2.2 bouyer case OFIOCGET: 148 1.2.2.2 bouyer if ((flags & FREAD) == 0) 149 1.2.2.2 bouyer return (EBADF); 150 1.2.2.2 bouyer if (node == 0) 151 1.2.2.2 bouyer return (EINVAL); 152 1.2.2.2 bouyer error = openfirmgetstr(of->of_namelen, of->of_name, &name); 153 1.2.2.2 bouyer if (error) 154 1.2.2.2 bouyer break; 155 1.2.2.2 bouyer s = splhigh(); 156 1.2.2.2 bouyer len = OF_getproplen(node, name); 157 1.2.2.2 bouyer splx(s); 158 1.2.2.2 bouyer if (len > of->of_buflen) { 159 1.2.2.2 bouyer error = ENOMEM; 160 1.2.2.2 bouyer break; 161 1.2.2.2 bouyer } 162 1.2.2.2 bouyer of->of_buflen = len; 163 1.2.2.2 bouyer /* -1 means no entry; 0 means no value */ 164 1.2.2.2 bouyer if (len <= 0) 165 1.2.2.2 bouyer break; 166 1.2.2.2 bouyer value = malloc(len, M_TEMP, M_WAITOK); 167 1.2.2.2 bouyer if (value == NULL) { 168 1.2.2.2 bouyer error = ENOMEM; 169 1.2.2.2 bouyer break; 170 1.2.2.2 bouyer } 171 1.2.2.2 bouyer s = splhigh(); 172 1.2.2.2 bouyer len = OF_getprop(node, name, (void *)value, len); 173 1.2.2.2 bouyer splx(s); 174 1.2.2.2 bouyer error = copyout(value, of->of_buf, len); 175 1.2.2.2 bouyer break; 176 1.2.2.2 bouyer 177 1.2.2.2 bouyer #if 0 178 1.2.2.2 bouyer case OFIOCSET: 179 1.2.2.2 bouyer if ((flags & FWRITE) == 0) 180 1.2.2.2 bouyer return (EBADF); 181 1.2.2.2 bouyer if (node == 0) 182 1.2.2.2 bouyer return (EINVAL); 183 1.2.2.2 bouyer error = openfirmgetstr(of->of_namelen, of->of_name, &name); 184 1.2.2.2 bouyer if (error) 185 1.2.2.2 bouyer break; 186 1.2.2.2 bouyer error = openfirmgetstr(of->of_buflen, of->of_buf, &value); 187 1.2.2.2 bouyer if (error) 188 1.2.2.2 bouyer break; 189 1.2.2.2 bouyer s = splhigh(); 190 1.2.2.2 bouyer len = OF_setprop(node, name, value, of->of_buflen + 1); 191 1.2.2.2 bouyer splx(s); 192 1.2.2.2 bouyer if (len != of->of_buflen) 193 1.2.2.2 bouyer error = EINVAL; 194 1.2.2.2 bouyer break; 195 1.2.2.2 bouyer #endif 196 1.2.2.2 bouyer 197 1.2.2.2 bouyer case OFIOCNEXTPROP: { 198 1.2.2.2 bouyer char newname[32]; 199 1.2.2.2 bouyer if ((flags & FREAD) == 0) 200 1.2.2.2 bouyer return (EBADF); 201 1.2.2.2 bouyer if (node == 0) 202 1.2.2.2 bouyer return (EINVAL); 203 1.2.2.2 bouyer if (of->of_namelen != 0) { 204 1.2.2.2 bouyer error = openfirmgetstr(of->of_namelen, of->of_name, 205 1.2.2.2 bouyer &name); 206 1.2.2.2 bouyer if (error) 207 1.2.2.2 bouyer break; 208 1.2.2.2 bouyer } 209 1.2.2.2 bouyer s = splhigh(); 210 1.2.2.2 bouyer ok = OF_nextprop(node, name, newname); 211 1.2.2.2 bouyer splx(s); 212 1.2.2.2 bouyer if (ok == 0) { 213 1.2.2.2 bouyer error = ENOENT; 214 1.2.2.2 bouyer break; 215 1.2.2.2 bouyer } 216 1.2.2.2 bouyer if (ok == -1) { 217 1.2.2.2 bouyer error = EINVAL; 218 1.2.2.2 bouyer break; 219 1.2.2.2 bouyer } 220 1.2.2.2 bouyer len = strlen(newname); 221 1.2.2.2 bouyer if (len > of->of_buflen) 222 1.2.2.2 bouyer len = of->of_buflen; 223 1.2.2.2 bouyer else 224 1.2.2.2 bouyer of->of_buflen = len; 225 1.2.2.2 bouyer error = copyout(newname, of->of_buf, len); 226 1.2.2.2 bouyer break; 227 1.2.2.2 bouyer } 228 1.2.2.2 bouyer 229 1.2.2.2 bouyer case OFIOCGETNEXT: 230 1.2.2.2 bouyer if ((flags & FREAD) == 0) 231 1.2.2.2 bouyer return (EBADF); 232 1.2.2.2 bouyer s = splhigh(); 233 1.2.2.2 bouyer node = OF_peer(node); 234 1.2.2.2 bouyer splx(s); 235 1.2.2.2 bouyer *(int *)data = lastnode = node; 236 1.2.2.2 bouyer break; 237 1.2.2.2 bouyer 238 1.2.2.2 bouyer case OFIOCGETCHILD: 239 1.2.2.2 bouyer if ((flags & FREAD) == 0) 240 1.2.2.2 bouyer return (EBADF); 241 1.2.2.2 bouyer if (node == 0) 242 1.2.2.2 bouyer return (EINVAL); 243 1.2.2.2 bouyer s = splhigh(); 244 1.2.2.2 bouyer node = OF_child(node); 245 1.2.2.2 bouyer splx(s); 246 1.2.2.2 bouyer *(int *)data = lastnode = node; 247 1.2.2.2 bouyer break; 248 1.2.2.2 bouyer 249 1.2.2.2 bouyer case OFIOCFINDDEVICE: 250 1.2.2.2 bouyer if ((flags & FREAD) == 0) 251 1.2.2.2 bouyer return (EBADF); 252 1.2.2.2 bouyer error = openfirmgetstr(of->of_namelen, of->of_name, &name); 253 1.2.2.2 bouyer if (error) 254 1.2.2.2 bouyer break; 255 1.2.2.2 bouyer node = OF_finddevice(name); 256 1.2.2.2 bouyer if (node == 0 || node == -1) { 257 1.2.2.2 bouyer error = ENOENT; 258 1.2.2.2 bouyer break; 259 1.2.2.2 bouyer } 260 1.2.2.2 bouyer of->of_nodeid = lastnode = node; 261 1.2.2.2 bouyer break; 262 1.2.2.2 bouyer 263 1.2.2.2 bouyer default: 264 1.2.2.2 bouyer return (ENOTTY); 265 1.2.2.2 bouyer } 266 1.2.2.2 bouyer 267 1.2.2.2 bouyer if (name) 268 1.2.2.2 bouyer free(name, M_TEMP); 269 1.2.2.2 bouyer if (value) 270 1.2.2.2 bouyer free(value, M_TEMP); 271 1.2.2.2 bouyer 272 1.2.2.2 bouyer return (error); 273 1.2.2.2 bouyer } 274
Indexes created Wed Oct 22 06:10:02 GMT 2025