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, fwerr; 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, 121 data, len, &fwerr); 122 else 123 err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, 124 data, len, &fwerr); 125 126 if (err) { 127 brcmf_dbg(FIL, "Failed: %s (%d)\n", 128 brcmf_fil_get_errstr((u32)(-err)), err); 129 } else if (fwerr < 0) { 130 brcmf_dbg(FIL, "Firmware error: %s (%d)\n", 131 brcmf_fil_get_errstr((u32)(-fwerr)), fwerr); 132 err = -EBADE; 133 } 134 return err; 135 } 136 137 s32 138 brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len) 139 { 140 s32 err; 141 142 mutex_lock(&ifp->drvr->proto_block); 143 144 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len); 145 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 146 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 147 148 err = brcmf_fil_cmd_data(ifp, cmd, data, len, true); 149 mutex_unlock(&ifp->drvr->proto_block); 150 151 return err; 152 } 153 154 s32 155 brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len) 156 { 157 s32 err; 158 159 mutex_lock(&ifp->drvr->proto_block); 160 err = brcmf_fil_cmd_data(ifp, cmd, data, len, false); 161 162 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len); 163 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 164 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 165 166 mutex_unlock(&ifp->drvr->proto_block); 167 168 return err; 169 } 170 171 172 s32 173 brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data) 174 { 175 s32 err; 176 __le32 data_le = cpu_to_le32(data); 177 178 mutex_lock(&ifp->drvr->proto_block); 179 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, data); 180 err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true); 181 mutex_unlock(&ifp->drvr->proto_block); 182 183 return err; 184 } 185 186 s32 187 brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data) 188 { 189 s32 err; 190 __le32 data_le = cpu_to_le32(*data); 191 192 mutex_lock(&ifp->drvr->proto_block); 193 err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), false); 194 mutex_unlock(&ifp->drvr->proto_block); 195 *data = le32_to_cpu(data_le); 196 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, *data); 197 198 return err; 199 } 200 201 static u32 202 brcmf_create_iovar(char *name, const char *data, u32 datalen, 203 char *buf, u32 buflen) 204 { 205 u32 len; 206 207 len = strlen(name) + 1; 208 209 if ((len + datalen) > buflen) 210 return 0; 211 212 memcpy(buf, name, len); 213 214 /* append data onto the end of the name string */ 215 if (data && datalen) 216 memcpy(&buf[len], data, datalen); 217 218 return len + datalen; 219 } 220 221 222 s32 223 brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, const void *data, 224 u32 len) 225 { 226 struct brcmf_pub *drvr = ifp->drvr; 227 s32 err; 228 u32 buflen; 229 230 mutex_lock(&drvr->proto_block); 231 232 brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len); 233 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 234 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 235 236 buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf, 237 sizeof(drvr->proto_buf)); 238 if (buflen) { 239 err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf, 240 buflen, true); 241 } else { 242 err = -EPERM; 243 brcmf_err("Creating iovar failed\n"); 244 } 245 246 mutex_unlock(&drvr->proto_block); 247 return err; 248 } 249 250 s32 251 brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data, 252 u32 len) 253 { 254 struct brcmf_pub *drvr = ifp->drvr; 255 s32 err; 256 u32 buflen; 257 258 mutex_lock(&drvr->proto_block); 259 260 buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf, 261 sizeof(drvr->proto_buf)); 262 if (buflen) { 263 err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf, 264 buflen, false); 265 if (err == 0) 266 memcpy(data, drvr->proto_buf, len); 267 } else { 268 err = -EPERM; 269 brcmf_err("Creating iovar failed\n"); 270 } 271 272 brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len); 273 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 274 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 275 276 mutex_unlock(&drvr->proto_block); 277 return err; 278 } 279 280 s32 281 brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data) 282 { 283 __le32 data_le = cpu_to_le32(data); 284 285 return brcmf_fil_iovar_data_set(ifp, name, &data_le, sizeof(data_le)); 286 } 287 288 s32 289 brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data) 290 { 291 __le32 data_le = cpu_to_le32(*data); 292 s32 err; 293 294 err = brcmf_fil_iovar_data_get(ifp, name, &data_le, sizeof(data_le)); 295 if (err == 0) 296 *data = le32_to_cpu(data_le); 297 return err; 298 } 299 300 static u32 301 brcmf_create_bsscfg(s32 bsscfgidx, char *name, char *data, u32 datalen, 302 char *buf, u32 buflen) 303 { 304 const s8 *prefix = "bsscfg:"; 305 s8 *p; 306 u32 prefixlen; 307 u32 namelen; 308 u32 iolen; 309 __le32 bsscfgidx_le; 310 311 if (bsscfgidx == 0) 312 return brcmf_create_iovar(name, data, datalen, buf, buflen); 313 314 prefixlen = strlen(prefix); 315 namelen = strlen(name) + 1; /* lengh of iovar name + null */ 316 iolen = prefixlen + namelen + sizeof(bsscfgidx_le) + datalen; 317 318 if (buflen < iolen) { 319 brcmf_err("buffer is too short\n"); 320 return 0; 321 } 322 323 p = buf; 324 325 /* copy prefix, no null */ 326 memcpy(p, prefix, prefixlen); 327 p += prefixlen; 328 329 /* copy iovar name including null */ 330 memcpy(p, name, namelen); 331 p += namelen; 332 333 /* bss config index as first data */ 334 bsscfgidx_le = cpu_to_le32(bsscfgidx); 335 memcpy(p, &bsscfgidx_le, sizeof(bsscfgidx_le)); 336 p += sizeof(bsscfgidx_le); 337 338 /* parameter buffer follows */ 339 if (datalen) 340 memcpy(p, data, datalen); 341 342 return iolen; 343 } 344 345 s32 346 brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name, 347 void *data, u32 len) 348 { 349 struct brcmf_pub *drvr = ifp->drvr; 350 s32 err; 351 u32 buflen; 352 353 mutex_lock(&drvr->proto_block); 354 355 brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx, 356 ifp->bsscfgidx, name, len); 357 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 358 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 359 360 buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len, 361 drvr->proto_buf, sizeof(drvr->proto_buf)); 362 if (buflen) { 363 err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf, 364 buflen, true); 365 } else { 366 err = -EPERM; 367 brcmf_err("Creating bsscfg failed\n"); 368 } 369 370 mutex_unlock(&drvr->proto_block); 371 return err; 372 } 373 374 s32 375 brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name, 376 void *data, u32 len) 377 { 378 struct brcmf_pub *drvr = ifp->drvr; 379 s32 err; 380 u32 buflen; 381 382 mutex_lock(&drvr->proto_block); 383 384 buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len, 385 drvr->proto_buf, sizeof(drvr->proto_buf)); 386 if (buflen) { 387 err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf, 388 buflen, false); 389 if (err == 0) 390 memcpy(data, drvr->proto_buf, len); 391 } else { 392 err = -EPERM; 393 brcmf_err("Creating bsscfg failed\n"); 394 } 395 brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx, 396 ifp->bsscfgidx, name, len); 397 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, 398 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); 399 400 mutex_unlock(&drvr->proto_block); 401 return err; 402 403 } 404 405 s32 406 brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data) 407 { 408 __le32 data_le = cpu_to_le32(data); 409 410 return brcmf_fil_bsscfg_data_set(ifp, name, &data_le, 411 sizeof(data_le)); 412 } 413 414 s32 415 brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data) 416 { 417 __le32 data_le = cpu_to_le32(*data); 418 s32 err; 419 420 err = brcmf_fil_bsscfg_data_get(ifp, name, &data_le, 421 sizeof(data_le)); 422 if (err == 0) 423 *data = le32_to_cpu(data_le); 424 return err; 425 } 426