1 /* 2 * Copyright (c) 2012 Broadcom Corporation 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 /* FWIL is the Firmware Interface Layer. In this module the support functions 18 * are located to set and get variables to and from the firmware. 19 */ 20 21 #include <linux/kernel.h> 22 #include <linux/netdevice.h> 23 #include <brcmu_utils.h> 24 #include <brcmu_wifi.h> 25 #include "core.h" 26 #include "bus.h" 27 #include "debug.h" 28 #include "tracepoint.h" 29 #include "fwil.h" 30 #include "proto.h" 31 32 33 #define MAX_HEX_DUMP_LEN 64 34 35 #ifdef DEBUG 36 static const char * const brcmf_fil_errstr[] = { 37 "BCME_OK", 38 "BCME_ERROR", 39 "BCME_BADARG", 40 "BCME_BADOPTION", 41 "BCME_NOTUP", 42 "BCME_NOTDOWN", 43 "BCME_NOTAP", 44 "BCME_NOTSTA", 45 "BCME_BADKEYIDX", 46 "BCME_RADIOOFF", 47 "BCME_NOTBANDLOCKED", 48 "BCME_NOCLK", 49 "BCME_BADRATESET", 50 "BCME_BADBAND", 51 "BCME_BUFTOOSHORT", 52 "BCME_BUFTOOLONG", 53 "BCME_BUSY", 54 "BCME_NOTASSOCIATED", 55 "BCME_BADSSIDLEN", 56 "BCME_OUTOFRANGECHAN", 57 "BCME_BADCHAN", 58 "BCME_BADADDR", 59 "BCME_NORESOURCE", 60 "BCME_UNSUPPORTED", 61 "BCME_BADLEN", 62 "BCME_NOTREADY", 63 "BCME_EPERM", 64 "BCME_NOMEM", 65 "BCME_ASSOCIATED", 66 "BCME_RANGE", 67 "BCME_NOTFOUND", 68 "BCME_WME_NOT_ENABLED", 69 "BCME_TSPEC_NOTFOUND", 70 "BCME_ACM_NOTSUPPORTED", 71 "BCME_NOT_WME_ASSOCIATION", 72 "BCME_SDIO_ERROR", 73 "BCME_DONGLE_DOWN", 74 "BCME_VERSION", 75 "BCME_TXFAIL", 76 "BCME_RXFAIL", 77 "BCME_NODEVICE", 78 "BCME_NMODE_DISABLED", 79 "BCME_NONRESIDENT", 80 "BCME_SCANREJECT", 81 "BCME_USAGE_ERROR", 82 "BCME_IOCTL_ERROR", 83 "BCME_SERIAL_PORT_ERR", 84 "BCME_DISABLED", 85 "BCME_DECERR", 86 "BCME_ENCERR", 87 "BCME_MICERR", 88 "BCME_REPLAY", 89 "BCME_IE_NOTFOUND", 90 }; 91 92 static const char *brcmf_fil_get_errstr(u32 err) 93 { 94 if (err >= ARRAY_SIZE(brcmf_fil_errstr)) 95 return "(unknown)"; 96 97 return brcmf_fil_errstr[err]; 98 } 99 #else 100 static const char *brcmf_fil_get_errstr(u32 err) 101 { 102 return ""; 103 } 104 #endif /* DEBUG */ 105 106 static s32 107 brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set) 108 { 109 struct brcmf_pub *drvr = ifp->drvr; 110 s32 err; 111 112 if (drvr->bus_if->state != BRCMF_BUS_UP) { 113 brcmf_err("bus is down. we have nothing to do.\n"); 114 return -EIO; 115 } 116 117 if (data != NULL) 118 len = min_t(uint, len, BRCMF_DCMD_MAXLEN); 119 if (set) 120 err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd, data, len); 121 else 122 err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len); 123 124 if (err >= 0) 125 return 0; 126 127 brcmf_dbg(FIL, "Failed: %s (%d)\n", 128 brcmf_fil_get_errstr((u32)(-err)), err); 129 130 return err; 131 } 132 133 s32 134 brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len) 135 { 136 s32 err; 137 138 mutex_lock(&ifp->drvr->proto_block); 139 140 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len); 141 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 142 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 143 144 err = brcmf_fil_cmd_data(ifp, cmd, data, len, true); 145 mutex_unlock(&ifp->drvr->proto_block); 146 147 return err; 148 } 149 150 s32 151 brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len) 152 { 153 s32 err; 154 155 mutex_lock(&ifp->drvr->proto_block); 156 err = brcmf_fil_cmd_data(ifp, cmd, data, len, false); 157 158 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len); 159 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 160 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 161 162 mutex_unlock(&ifp->drvr->proto_block); 163 164 return err; 165 } 166 167 168 s32 169 brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data) 170 { 171 s32 err; 172 __le32 data_le = cpu_to_le32(data); 173 174 mutex_lock(&ifp->drvr->proto_block); 175 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, data); 176 err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true); 177 mutex_unlock(&ifp->drvr->proto_block); 178 179 return err; 180 } 181 182 s32 183 brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data) 184 { 185 s32 err; 186 __le32 data_le = cpu_to_le32(*data); 187 188 mutex_lock(&ifp->drvr->proto_block); 189 err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), false); 190 mutex_unlock(&ifp->drvr->proto_block); 191 *data = le32_to_cpu(data_le); 192 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, *data); 193 194 return err; 195 } 196 197 static u32 198 brcmf_create_iovar(char *name, const char *data, u32 datalen, 199 char *buf, u32 buflen) 200 { 201 u32 len; 202 203 len = strlen(name) + 1; 204 205 if ((len + datalen) > buflen) 206 return 0; 207 208 memcpy(buf, name, len); 209 210 /* append data onto the end of the name string */ 211 if (data && datalen) 212 memcpy(&buf[len], data, datalen); 213 214 return len + datalen; 215 } 216 217 218 s32 219 brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, const void *data, 220 u32 len) 221 { 222 struct brcmf_pub *drvr = ifp->drvr; 223 s32 err; 224 u32 buflen; 225 226 mutex_lock(&drvr->proto_block); 227 228 brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len); 229 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 230 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 231 232 buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf, 233 sizeof(drvr->proto_buf)); 234 if (buflen) { 235 err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf, 236 buflen, true); 237 } else { 238 err = -EPERM; 239 brcmf_err("Creating iovar failed\n"); 240 } 241 242 mutex_unlock(&drvr->proto_block); 243 return err; 244 } 245 246 s32 247 brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data, 248 u32 len) 249 { 250 struct brcmf_pub *drvr = ifp->drvr; 251 s32 err; 252 u32 buflen; 253 254 mutex_lock(&drvr->proto_block); 255 256 buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf, 257 sizeof(drvr->proto_buf)); 258 if (buflen) { 259 err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf, 260 buflen, false); 261 if (err == 0) 262 memcpy(data, drvr->proto_buf, len); 263 } else { 264 err = -EPERM; 265 brcmf_err("Creating iovar failed\n"); 266 } 267 268 brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len); 269 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 270 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 271 272 mutex_unlock(&drvr->proto_block); 273 return err; 274 } 275 276 s32 277 brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data) 278 { 279 __le32 data_le = cpu_to_le32(data); 280 281 return brcmf_fil_iovar_data_set(ifp, name, &data_le, sizeof(data_le)); 282 } 283 284 s32 285 brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data) 286 { 287 __le32 data_le = cpu_to_le32(*data); 288 s32 err; 289 290 err = brcmf_fil_iovar_data_get(ifp, name, &data_le, sizeof(data_le)); 291 if (err == 0) 292 *data = le32_to_cpu(data_le); 293 return err; 294 } 295 296 static u32 297 brcmf_create_bsscfg(s32 bsscfgidx, char *name, char *data, u32 datalen, 298 char *buf, u32 buflen) 299 { 300 const s8 *prefix = "bsscfg:"; 301 s8 *p; 302 u32 prefixlen; 303 u32 namelen; 304 u32 iolen; 305 __le32 bsscfgidx_le; 306 307 if (bsscfgidx == 0) 308 return brcmf_create_iovar(name, data, datalen, buf, buflen); 309 310 prefixlen = strlen(prefix); 311 namelen = strlen(name) + 1; /* lengh of iovar name + null */ 312 iolen = prefixlen + namelen + sizeof(bsscfgidx_le) + datalen; 313 314 if (buflen < iolen) { 315 brcmf_err("buffer is too short\n"); 316 return 0; 317 } 318 319 p = buf; 320 321 /* copy prefix, no null */ 322 memcpy(p, prefix, prefixlen); 323 p += prefixlen; 324 325 /* copy iovar name including null */ 326 memcpy(p, name, namelen); 327 p += namelen; 328 329 /* bss config index as first data */ 330 bsscfgidx_le = cpu_to_le32(bsscfgidx); 331 memcpy(p, &bsscfgidx_le, sizeof(bsscfgidx_le)); 332 p += sizeof(bsscfgidx_le); 333 334 /* parameter buffer follows */ 335 if (datalen) 336 memcpy(p, data, datalen); 337 338 return iolen; 339 } 340 341 s32 342 brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name, 343 void *data, u32 len) 344 { 345 struct brcmf_pub *drvr = ifp->drvr; 346 s32 err; 347 u32 buflen; 348 349 mutex_lock(&drvr->proto_block); 350 351 brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx, 352 ifp->bsscfgidx, name, len); 353 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 354 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 355 356 buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len, 357 drvr->proto_buf, sizeof(drvr->proto_buf)); 358 if (buflen) { 359 err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf, 360 buflen, true); 361 } else { 362 err = -EPERM; 363 brcmf_err("Creating bsscfg failed\n"); 364 } 365 366 mutex_unlock(&drvr->proto_block); 367 return err; 368 } 369 370 s32 371 brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name, 372 void *data, u32 len) 373 { 374 struct brcmf_pub *drvr = ifp->drvr; 375 s32 err; 376 u32 buflen; 377 378 mutex_lock(&drvr->proto_block); 379 380 buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len, 381 drvr->proto_buf, sizeof(drvr->proto_buf)); 382 if (buflen) { 383 err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf, 384 buflen, false); 385 if (err == 0) 386 memcpy(data, drvr->proto_buf, len); 387 } else { 388 err = -EPERM; 389 brcmf_err("Creating bsscfg failed\n"); 390 } 391 brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx, 392 ifp->bsscfgidx, name, len); 393 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 394 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 395 396 mutex_unlock(&drvr->proto_block); 397 return err; 398 399 } 400 401 s32 402 brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data) 403 { 404 __le32 data_le = cpu_to_le32(data); 405 406 return brcmf_fil_bsscfg_data_set(ifp, name, &data_le, 407 sizeof(data_le)); 408 } 409 410 s32 411 brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data) 412 { 413 __le32 data_le = cpu_to_le32(*data); 414 s32 err; 415 416 err = brcmf_fil_bsscfg_data_get(ifp, name, &data_le, 417 sizeof(data_le)); 418 if (err == 0) 419 *data = le32_to_cpu(data_le); 420 return err; 421 } 422