| 1 | /* |
| 2 | * *************************************************************************** |
| 3 | * FILE: putest.c |
| 4 | * |
| 5 | * PURPOSE: putest related functions. |
| 6 | * |
| 7 | * Copyright (C) 2008-2009 by Cambridge Silicon Radio Ltd. |
| 8 | * |
| 9 | * Refer to LICENSE.txt included with this source code for details on |
| 10 | * the license terms. |
| 11 | * |
| 12 | * *************************************************************************** |
| 13 | */ |
| 14 | |
| 15 | #include <linux/vmalloc.h> |
| 16 | #include <linux/firmware.h> |
| 17 | |
| 18 | #include "unifi_priv.h" |
| 19 | #include "csr_wifi_hip_chiphelper.h" |
| 20 | |
| 21 | #define UNIFI_PROC_BOTH 3 |
| 22 | |
| 23 | |
| 24 | int unifi_putest_cmd52_read(unifi_priv_t *priv, unsigned char *arg) |
| 25 | { |
| 26 | struct unifi_putest_cmd52 cmd52_params; |
| 27 | u8 *arg_pos; |
| 28 | unsigned int cmd_param_size; |
| 29 | int r; |
| 30 | CsrResult csrResult; |
| 31 | unsigned char ret_buffer[32]; |
| 32 | u8 *ret_buffer_pos; |
| 33 | u8 retries; |
| 34 | |
| 35 | arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); |
| 36 | if (get_user(cmd_param_size, (int*)arg_pos)) { |
| 37 | unifi_error(priv, |
| 38 | "unifi_putest_cmd52_read: Failed to get the argument\n"); |
| 39 | return -EFAULT; |
| 40 | } |
| 41 | |
| 42 | if (cmd_param_size != sizeof(struct unifi_putest_cmd52)) { |
| 43 | unifi_error(priv, |
| 44 | "unifi_putest_cmd52_read: cmd52 struct mismatch\n"); |
| 45 | return -EINVAL; |
| 46 | } |
| 47 | |
| 48 | arg_pos += sizeof(unsigned int); |
| 49 | if (copy_from_user(&cmd52_params, |
| 50 | (void*)arg_pos, |
| 51 | sizeof(struct unifi_putest_cmd52))) { |
| 52 | unifi_error(priv, |
| 53 | "unifi_putest_cmd52_read: Failed to get the cmd52 params\n"); |
| 54 | return -EFAULT; |
| 55 | } |
| 56 | |
| 57 | unifi_trace(priv, UDBG2, "cmd52r: func=%d addr=0x%x ", |
| 58 | cmd52_params.funcnum, cmd52_params.addr); |
| 59 | |
| 60 | retries = 3; |
| 61 | CsrSdioClaim(priv->sdio); |
| 62 | do { |
| 63 | if (cmd52_params.funcnum == 0) { |
| 64 | csrResult = CsrSdioF0Read8(priv->sdio, cmd52_params.addr, &cmd52_params.data); |
| 65 | } else { |
| 66 | csrResult = CsrSdioRead8(priv->sdio, cmd52_params.addr, &cmd52_params.data); |
| 67 | } |
| 68 | } while (--retries && ((csrResult == CSR_SDIO_RESULT_CRC_ERROR) || (csrResult == CSR_SDIO_RESULT_TIMEOUT))); |
| 69 | CsrSdioRelease(priv->sdio); |
| 70 | |
| 71 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 72 | unifi_error(priv, |
| 73 | "\nunifi_putest_cmd52_read: Read8() failed (csrResult=0x%x)\n", csrResult); |
| 74 | return -EFAULT; |
| 75 | } |
| 76 | unifi_trace(priv, UDBG2, "data=%d\n", cmd52_params.data); |
| 77 | |
| 78 | /* Copy the info to the out buffer */ |
| 79 | *(unifi_putest_command_t*)ret_buffer = UNIFI_PUTEST_CMD52_READ; |
| 80 | ret_buffer_pos = (u8*)(((unifi_putest_command_t*)ret_buffer) + 1); |
| 81 | *(unsigned int*)ret_buffer_pos = sizeof(struct unifi_putest_cmd52); |
| 82 | ret_buffer_pos += sizeof(unsigned int); |
| 83 | memcpy(ret_buffer_pos, &cmd52_params, sizeof(struct unifi_putest_cmd52)); |
| 84 | ret_buffer_pos += sizeof(struct unifi_putest_cmd52); |
| 85 | |
| 86 | r = copy_to_user((void*)arg, |
| 87 | ret_buffer, |
| 88 | ret_buffer_pos - ret_buffer); |
| 89 | if (r) { |
| 90 | unifi_error(priv, |
| 91 | "unifi_putest_cmd52_read: Failed to return the data\n"); |
| 92 | return -EFAULT; |
| 93 | } |
| 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | |
| 99 | int unifi_putest_cmd52_write(unifi_priv_t *priv, unsigned char *arg) |
| 100 | { |
| 101 | struct unifi_putest_cmd52 cmd52_params; |
| 102 | u8 *arg_pos; |
| 103 | unsigned int cmd_param_size; |
| 104 | CsrResult csrResult; |
| 105 | u8 retries; |
| 106 | |
| 107 | arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); |
| 108 | if (get_user(cmd_param_size, (int*)arg_pos)) { |
| 109 | unifi_error(priv, |
| 110 | "unifi_putest_cmd52_write: Failed to get the argument\n"); |
| 111 | return -EFAULT; |
| 112 | } |
| 113 | |
| 114 | if (cmd_param_size != sizeof(struct unifi_putest_cmd52)) { |
| 115 | unifi_error(priv, |
| 116 | "unifi_putest_cmd52_write: cmd52 struct mismatch\n"); |
| 117 | return -EINVAL; |
| 118 | } |
| 119 | |
| 120 | arg_pos += sizeof(unsigned int); |
| 121 | if (copy_from_user(&cmd52_params, |
| 122 | (void*)(arg_pos), |
| 123 | sizeof(struct unifi_putest_cmd52))) { |
| 124 | unifi_error(priv, |
| 125 | "unifi_putest_cmd52_write: Failed to get the cmd52 params\n"); |
| 126 | return -EFAULT; |
| 127 | } |
| 128 | |
| 129 | unifi_trace(priv, UDBG2, "cmd52w: func=%d addr=0x%x data=%d\n", |
| 130 | cmd52_params.funcnum, cmd52_params.addr, cmd52_params.data); |
| 131 | |
| 132 | retries = 3; |
| 133 | CsrSdioClaim(priv->sdio); |
| 134 | do { |
| 135 | if (cmd52_params.funcnum == 0) { |
| 136 | csrResult = CsrSdioF0Write8(priv->sdio, cmd52_params.addr, cmd52_params.data); |
| 137 | } else { |
| 138 | csrResult = CsrSdioWrite8(priv->sdio, cmd52_params.addr, cmd52_params.data); |
| 139 | } |
| 140 | } while (--retries && ((csrResult == CSR_SDIO_RESULT_CRC_ERROR) || (csrResult == CSR_SDIO_RESULT_TIMEOUT))); |
| 141 | CsrSdioRelease(priv->sdio); |
| 142 | |
| 143 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 144 | unifi_error(priv, |
| 145 | "unifi_putest_cmd52_write: Write8() failed (csrResult=0x%x)\n", csrResult); |
| 146 | return -EFAULT; |
| 147 | } |
| 148 | |
| 149 | return 0; |
| 150 | } |
| 151 | |
| 152 | int unifi_putest_gp_read16(unifi_priv_t *priv, unsigned char *arg) |
| 153 | { |
| 154 | struct unifi_putest_gp_rw16 gp_r16_params; |
| 155 | u8 *arg_pos; |
| 156 | unsigned int cmd_param_size; |
| 157 | int r; |
| 158 | CsrResult csrResult; |
| 159 | unsigned char ret_buffer[32]; |
| 160 | u8 *ret_buffer_pos; |
| 161 | |
| 162 | arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); |
| 163 | if (get_user(cmd_param_size, (int*)arg_pos)) { |
| 164 | unifi_error(priv, |
| 165 | "unifi_putest_gp_read16: Failed to get the argument\n"); |
| 166 | return -EFAULT; |
| 167 | } |
| 168 | |
| 169 | if (cmd_param_size != sizeof(struct unifi_putest_gp_rw16)) { |
| 170 | unifi_error(priv, |
| 171 | "unifi_putest_gp_read16: struct mismatch\n"); |
| 172 | return -EINVAL; |
| 173 | } |
| 174 | |
| 175 | arg_pos += sizeof(unsigned int); |
| 176 | if (copy_from_user(&gp_r16_params, |
| 177 | (void*)arg_pos, |
| 178 | sizeof(struct unifi_putest_gp_rw16))) { |
| 179 | unifi_error(priv, |
| 180 | "unifi_putest_gp_read16: Failed to get the params\n"); |
| 181 | return -EFAULT; |
| 182 | } |
| 183 | CsrSdioClaim(priv->sdio); |
| 184 | csrResult = unifi_card_read16(priv->card, gp_r16_params.addr, &gp_r16_params.data); |
| 185 | CsrSdioRelease(priv->sdio); |
| 186 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 187 | unifi_error(priv, |
| 188 | "unifi_putest_gp_read16: unifi_card_read16() GP=0x%x failed (csrResult=0x%x)\n", gp_r16_params.addr, csrResult); |
| 189 | return -EFAULT; |
| 190 | } |
| 191 | |
| 192 | unifi_trace(priv, UDBG2, "gp_r16: GP=0x%08x, data=0x%04x\n", gp_r16_params.addr, gp_r16_params.data); |
| 193 | |
| 194 | /* Copy the info to the out buffer */ |
| 195 | *(unifi_putest_command_t*)ret_buffer = UNIFI_PUTEST_GP_READ16; |
| 196 | ret_buffer_pos = (u8*)(((unifi_putest_command_t*)ret_buffer) + 1); |
| 197 | *(unsigned int*)ret_buffer_pos = sizeof(struct unifi_putest_gp_rw16); |
| 198 | ret_buffer_pos += sizeof(unsigned int); |
| 199 | memcpy(ret_buffer_pos, &gp_r16_params, sizeof(struct unifi_putest_gp_rw16)); |
| 200 | ret_buffer_pos += sizeof(struct unifi_putest_gp_rw16); |
| 201 | |
| 202 | r = copy_to_user((void*)arg, |
| 203 | ret_buffer, |
| 204 | ret_buffer_pos - ret_buffer); |
| 205 | if (r) { |
| 206 | unifi_error(priv, |
| 207 | "unifi_putest_gp_read16: Failed to return the data\n"); |
| 208 | return -EFAULT; |
| 209 | } |
| 210 | |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | int unifi_putest_gp_write16(unifi_priv_t *priv, unsigned char *arg) |
| 215 | { |
| 216 | struct unifi_putest_gp_rw16 gp_w16_params; |
| 217 | u8 *arg_pos; |
| 218 | unsigned int cmd_param_size; |
| 219 | CsrResult csrResult; |
| 220 | |
| 221 | arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); |
| 222 | if (get_user(cmd_param_size, (int*)arg_pos)) { |
| 223 | unifi_error(priv, |
| 224 | "unifi_putest_gp_write16: Failed to get the argument\n"); |
| 225 | return -EFAULT; |
| 226 | } |
| 227 | |
| 228 | if (cmd_param_size != sizeof(struct unifi_putest_gp_rw16)) { |
| 229 | unifi_error(priv, |
| 230 | "unifi_putest_gp_write16: struct mismatch\n"); |
| 231 | return -EINVAL; |
| 232 | } |
| 233 | |
| 234 | arg_pos += sizeof(unsigned int); |
| 235 | if (copy_from_user(&gp_w16_params, |
| 236 | (void*)(arg_pos), |
| 237 | sizeof(struct unifi_putest_gp_rw16))) { |
| 238 | unifi_error(priv, |
| 239 | "unifi_putest_gp_write16: Failed to get the params\n"); |
| 240 | return -EFAULT; |
| 241 | } |
| 242 | |
| 243 | unifi_trace(priv, UDBG2, "gp_w16: GP=0x%08x, data=0x%04x\n", gp_w16_params.addr, gp_w16_params.data); |
| 244 | CsrSdioClaim(priv->sdio); |
| 245 | csrResult = unifi_card_write16(priv->card, gp_w16_params.addr, gp_w16_params.data); |
| 246 | CsrSdioRelease(priv->sdio); |
| 247 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 248 | unifi_error(priv, |
| 249 | "unifi_putest_gp_write16: unifi_card_write16() GP=%x failed (csrResult=0x%x)\n", gp_w16_params.addr, csrResult); |
| 250 | return -EFAULT; |
| 251 | } |
| 252 | |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | int unifi_putest_set_sdio_clock(unifi_priv_t *priv, unsigned char *arg) |
| 257 | { |
| 258 | int sdio_clock_speed; |
| 259 | CsrResult csrResult; |
| 260 | |
| 261 | if (get_user(sdio_clock_speed, (int*)(((unifi_putest_command_t*)arg) + 1))) { |
| 262 | unifi_error(priv, |
| 263 | "unifi_putest_set_sdio_clock: Failed to get the argument\n"); |
| 264 | return -EFAULT; |
| 265 | } |
| 266 | |
| 267 | unifi_trace(priv, UDBG2, "set sdio clock: %d KHz\n", sdio_clock_speed); |
| 268 | |
| 269 | CsrSdioClaim(priv->sdio); |
| 270 | csrResult = CsrSdioMaxBusClockFrequencySet(priv->sdio, sdio_clock_speed * 1000); |
| 271 | CsrSdioRelease(priv->sdio); |
| 272 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 273 | unifi_error(priv, |
| 274 | "unifi_putest_set_sdio_clock: Set clock failed (csrResult=0x%x)\n", csrResult); |
| 275 | return -EFAULT; |
| 276 | } |
| 277 | |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | |
| 282 | int unifi_putest_start(unifi_priv_t *priv, unsigned char *arg) |
| 283 | { |
| 284 | int r; |
| 285 | CsrResult csrResult; |
| 286 | int already_in_test = priv->ptest_mode; |
| 287 | |
| 288 | /* Ensure that sme_sys_suspend() doesn't power down the chip because: |
| 289 | * 1) Power is needed anyway for ptest. |
| 290 | * 2) The app code uses the START ioctl as a reset, so it gets called |
| 291 | * multiple times. If the app stops the XAPs, but the power_down/up |
| 292 | * sequence doesn't actually power down the chip, there can be problems |
| 293 | * resetting, because part of the power_up sequence disables function 1 |
| 294 | */ |
| 295 | priv->ptest_mode = 1; |
| 296 | |
| 297 | /* Suspend the SME and UniFi */ |
| 298 | if (priv->sme_cli) { |
| 299 | r = sme_sys_suspend(priv); |
| 300 | if (r) { |
| 301 | unifi_error(priv, |
| 302 | "unifi_putest_start: failed to suspend UniFi\n"); |
| 303 | return r; |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | /* Application may have stopped the XAPs, but they are needed for reset */ |
| 308 | if (already_in_test) { |
| 309 | CsrSdioClaim(priv->sdio); |
| 310 | csrResult = unifi_start_processors(priv->card); |
| 311 | CsrSdioRelease(priv->sdio); |
| 312 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 313 | unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); |
| 314 | } |
| 315 | } else { |
| 316 | /* Ensure chip is powered for the case where there's no unifi_helper */ |
| 317 | CsrSdioClaim(priv->sdio); |
| 318 | csrResult = CsrSdioPowerOn(priv->sdio); |
| 319 | CsrSdioRelease(priv->sdio); |
| 320 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 321 | unifi_error(priv, "CsrSdioPowerOn csrResult = %d\n", csrResult); |
| 322 | } |
| 323 | } |
| 324 | CsrSdioClaim(priv->sdio); |
| 325 | csrResult = unifi_init(priv->card); |
| 326 | CsrSdioRelease(priv->sdio); |
| 327 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 328 | unifi_error(priv, |
| 329 | "unifi_putest_start: failed to init UniFi\n"); |
| 330 | return CsrHipResultToStatus(csrResult); |
| 331 | } |
| 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | |
| 337 | int unifi_putest_stop(unifi_priv_t *priv, unsigned char *arg) |
| 338 | { |
| 339 | int r = 0; |
| 340 | CsrResult csrResult; |
| 341 | |
| 342 | /* Application may have stopped the XAPs, but they are needed for reset */ |
| 343 | CsrSdioClaim(priv->sdio); |
| 344 | csrResult = unifi_start_processors(priv->card); |
| 345 | CsrSdioRelease(priv->sdio); |
| 346 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 347 | unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); |
| 348 | } |
| 349 | |
| 350 | /* PUTEST_STOP is also used to resume the XAPs after SME coredump. |
| 351 | * Don't power off the chip, leave that to the normal wifi-off which is |
| 352 | * about to carry on. No need to resume the SME either, as it wasn't suspended. |
| 353 | */ |
| 354 | if (priv->coredump_mode) { |
| 355 | priv->coredump_mode = 0; |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | /* At this point function 1 is enabled and the XAPs are running, so it is |
| 360 | * safe to let the card power down. Power is restored later, asynchronously, |
| 361 | * during the wifi_on requested by the SME. |
| 362 | */ |
| 363 | CsrSdioClaim(priv->sdio); |
| 364 | CsrSdioPowerOff(priv->sdio); |
| 365 | CsrSdioRelease(priv->sdio); |
| 366 | |
| 367 | /* Resume the SME and UniFi */ |
| 368 | if (priv->sme_cli) { |
| 369 | r = sme_sys_resume(priv); |
| 370 | if (r) { |
| 371 | unifi_error(priv, |
| 372 | "unifi_putest_stop: failed to resume SME\n"); |
| 373 | } |
| 374 | } |
| 375 | priv->ptest_mode = 0; |
| 376 | |
| 377 | return r; |
| 378 | } |
| 379 | |
| 380 | |
| 381 | int unifi_putest_dl_fw(unifi_priv_t *priv, unsigned char *arg) |
| 382 | { |
| 383 | #define UF_PUTEST_MAX_FW_FILE_NAME 16 |
| 384 | #define UNIFI_MAX_FW_PATH_LEN 32 |
| 385 | unsigned int fw_name_length; |
| 386 | unsigned char fw_name[UF_PUTEST_MAX_FW_FILE_NAME+1]; |
| 387 | unsigned char *name_buffer; |
| 388 | int postfix; |
| 389 | char fw_path[UNIFI_MAX_FW_PATH_LEN]; |
| 390 | const struct firmware *fw_entry; |
| 391 | struct dlpriv temp_fw_sta; |
| 392 | int r; |
| 393 | CsrResult csrResult; |
| 394 | |
| 395 | /* Get the f/w file name length */ |
| 396 | if (get_user(fw_name_length, (unsigned int*)(((unifi_putest_command_t*)arg) + 1))) { |
| 397 | unifi_error(priv, |
| 398 | "unifi_putest_dl_fw: Failed to get the length argument\n"); |
| 399 | return -EFAULT; |
| 400 | } |
| 401 | |
| 402 | unifi_trace(priv, UDBG2, "unifi_putest_dl_fw: file name size = %d\n", fw_name_length); |
| 403 | |
| 404 | /* Sanity check for the f/w file name length */ |
| 405 | if (fw_name_length > UF_PUTEST_MAX_FW_FILE_NAME) { |
| 406 | unifi_error(priv, |
| 407 | "unifi_putest_dl_fw: F/W file name is too long\n"); |
| 408 | return -EINVAL; |
| 409 | } |
| 410 | |
| 411 | /* Get the f/w file name */ |
| 412 | name_buffer = ((unsigned char*)arg) + sizeof(unifi_putest_command_t) + sizeof(unsigned int); |
| 413 | if (copy_from_user(fw_name, (void*)name_buffer, fw_name_length)) { |
| 414 | unifi_error(priv, "unifi_putest_dl_fw: Failed to get the file name\n"); |
| 415 | return -EFAULT; |
| 416 | } |
| 417 | fw_name[fw_name_length] = '\0'; |
| 418 | unifi_trace(priv, UDBG2, "unifi_putest_dl_fw: file = %s\n", fw_name); |
| 419 | |
| 420 | /* Keep the existing f/w to a temp, we need to restore it later */ |
| 421 | temp_fw_sta = priv->fw_sta; |
| 422 | |
| 423 | /* Get the putest f/w */ |
| 424 | postfix = priv->instance; |
| 425 | scnprintf(fw_path, UNIFI_MAX_FW_PATH_LEN, "unifi-sdio-%d/%s", |
| 426 | postfix, fw_name); |
| 427 | r = request_firmware(&fw_entry, fw_path, priv->unifi_device); |
| 428 | if (r == 0) { |
| 429 | priv->fw_sta.fw_desc = (void *)fw_entry; |
| 430 | priv->fw_sta.dl_data = fw_entry->data; |
| 431 | priv->fw_sta.dl_len = fw_entry->size; |
| 432 | } else { |
| 433 | unifi_error(priv, "Firmware file not available\n"); |
| 434 | return -EINVAL; |
| 435 | } |
| 436 | |
| 437 | /* Application may have stopped the XAPs, but they are needed for reset */ |
| 438 | CsrSdioClaim(priv->sdio); |
| 439 | csrResult = unifi_start_processors(priv->card); |
| 440 | CsrSdioRelease(priv->sdio); |
| 441 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 442 | unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); |
| 443 | } |
| 444 | |
| 445 | /* Download the f/w. On UF6xxx this will cause the f/w file to convert |
| 446 | * into patch format and download via the ROM boot loader |
| 447 | */ |
| 448 | CsrSdioClaim(priv->sdio); |
| 449 | csrResult = unifi_download(priv->card, 0x0c00); |
| 450 | CsrSdioRelease(priv->sdio); |
| 451 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 452 | unifi_error(priv, |
| 453 | "unifi_putest_dl_fw: failed to download the f/w\n"); |
| 454 | goto free_fw; |
| 455 | } |
| 456 | |
| 457 | /* Free the putest f/w... */ |
| 458 | free_fw: |
| 459 | uf_release_firmware(priv, &priv->fw_sta); |
| 460 | /* ... and restore the original f/w */ |
| 461 | priv->fw_sta = temp_fw_sta; |
| 462 | |
| 463 | return CsrHipResultToStatus(csrResult); |
| 464 | } |
| 465 | |
| 466 | |
| 467 | int unifi_putest_dl_fw_buff(unifi_priv_t *priv, unsigned char *arg) |
| 468 | { |
| 469 | unsigned int fw_length; |
| 470 | unsigned char *fw_buf = NULL; |
| 471 | unsigned char *fw_user_ptr; |
| 472 | struct dlpriv temp_fw_sta; |
| 473 | CsrResult csrResult; |
| 474 | |
| 475 | /* Get the f/w buffer length */ |
| 476 | if (get_user(fw_length, (unsigned int*)(((unifi_putest_command_t*)arg) + 1))) { |
| 477 | unifi_error(priv, |
| 478 | "unifi_putest_dl_fw_buff: Failed to get the length arg\n"); |
| 479 | return -EFAULT; |
| 480 | } |
| 481 | |
| 482 | unifi_trace(priv, UDBG2, "unifi_putest_dl_fw_buff: size = %d\n", fw_length); |
| 483 | |
| 484 | /* Sanity check for the buffer length */ |
| 485 | if (fw_length == 0 || fw_length > 0xfffffff) { |
| 486 | unifi_error(priv, |
| 487 | "unifi_putest_dl_fw_buff: buffer length bad %u\n", fw_length); |
| 488 | return -EINVAL; |
| 489 | } |
| 490 | |
| 491 | /* Buffer for kernel copy of the f/w image */ |
| 492 | fw_buf = kmalloc(fw_length, GFP_KERNEL); |
| 493 | if (!fw_buf) { |
| 494 | unifi_error(priv, "unifi_putest_dl_fw_buff: malloc fail\n"); |
| 495 | return -ENOMEM; |
| 496 | } |
| 497 | |
| 498 | /* Get the f/w image */ |
| 499 | fw_user_ptr = ((unsigned char*)arg) + sizeof(unifi_putest_command_t) + sizeof(unsigned int); |
| 500 | if (copy_from_user(fw_buf, (void*)fw_user_ptr, fw_length)) { |
| 501 | unifi_error(priv, "unifi_putest_dl_fw_buff: Failed to get the buffer\n"); |
| 502 | kfree(fw_buf); |
| 503 | return -EFAULT; |
| 504 | } |
| 505 | |
| 506 | /* Save the existing f/w to a temp, we need to restore it later */ |
| 507 | temp_fw_sta = priv->fw_sta; |
| 508 | |
| 509 | /* Setting fw_desc NULL indicates to the core that no f/w file was loaded |
| 510 | * via the kernel request_firmware() mechanism. This indicates to the core |
| 511 | * that it shouldn't call release_firmware() after the download is done. |
| 512 | */ |
| 513 | priv->fw_sta.fw_desc = NULL; /* No OS f/w resource */ |
| 514 | priv->fw_sta.dl_data = fw_buf; |
| 515 | priv->fw_sta.dl_len = fw_length; |
| 516 | |
| 517 | /* Application may have stopped the XAPs, but they are needed for reset */ |
| 518 | CsrSdioClaim(priv->sdio); |
| 519 | csrResult = unifi_start_processors(priv->card); |
| 520 | CsrSdioRelease(priv->sdio); |
| 521 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 522 | unifi_error(priv, "Failed to start XAPs. Hard reset required.\n"); |
| 523 | } |
| 524 | |
| 525 | /* Download the f/w. On UF6xxx this will cause the f/w file to convert |
| 526 | * into patch format and download via the ROM boot loader |
| 527 | */ |
| 528 | CsrSdioClaim(priv->sdio); |
| 529 | csrResult = unifi_download(priv->card, 0x0c00); |
| 530 | CsrSdioRelease(priv->sdio); |
| 531 | if (csrResult != CSR_RESULT_SUCCESS) { |
| 532 | unifi_error(priv, |
| 533 | "unifi_putest_dl_fw_buff: failed to download the f/w\n"); |
| 534 | goto free_fw; |
| 535 | } |
| 536 | |
| 537 | free_fw: |
| 538 | /* Finished with the putest f/w, so restore the station f/w */ |
| 539 | priv->fw_sta = temp_fw_sta; |
| 540 | kfree(fw_buf); |
| 541 | |
| 542 | return CsrHipResultToStatus(csrResult); |
| 543 | } |
| 544 | |
| 545 | |
| 546 | int unifi_putest_coredump_prepare(unifi_priv_t *priv, unsigned char *arg) |
| 547 | { |
| 548 | u16 data_u16; |
| 549 | s32 i; |
| 550 | CsrResult r; |
| 551 | |
| 552 | unifi_info(priv, "Preparing for SDIO coredump\n"); |
| 553 | #if defined (CSR_WIFI_HIP_DEBUG_OFFLINE) |
| 554 | unifi_debug_buf_dump(); |
| 555 | #endif |
| 556 | |
| 557 | /* Sanity check that userspace hasn't called a PUTEST_START, because that |
| 558 | * would have reset UniFi, potentially power cycling it and losing context |
| 559 | */ |
| 560 | if (priv->ptest_mode) { |
| 561 | unifi_error(priv, "PUTEST_START shouldn't be used before a coredump\n"); |
| 562 | } |
| 563 | |
| 564 | /* Flag that the userspace has requested coredump. Even if this preparation |
| 565 | * fails, the SME will call PUTEST_STOP to tidy up. |
| 566 | */ |
| 567 | priv->coredump_mode = 1; |
| 568 | |
| 569 | for (i = 0; i < 3; i++) { |
| 570 | CsrSdioClaim(priv->sdio); |
| 571 | r = CsrSdioRead16(priv->sdio, CHIP_HELPER_UNIFI_GBL_CHIP_VERSION*2, &data_u16); |
| 572 | CsrSdioRelease(priv->sdio); |
| 573 | if (r != CSR_RESULT_SUCCESS) { |
| 574 | unifi_info(priv, "Failed to read chip version! Try %d\n", i); |
| 575 | |
| 576 | /* First try, re-enable function which may have been disabled by f/w panic */ |
| 577 | if (i == 0) { |
| 578 | unifi_info(priv, "Try function enable\n"); |
| 579 | CsrSdioClaim(priv->sdio); |
| 580 | r = CsrSdioFunctionEnable(priv->sdio); |
| 581 | CsrSdioRelease(priv->sdio); |
| 582 | if (r != CSR_RESULT_SUCCESS) { |
| 583 | unifi_error(priv, "CsrSdioFunctionEnable failed %d\n", r); |
| 584 | } |
| 585 | continue; |
| 586 | } |
| 587 | |
| 588 | /* Subsequent tries, reset */ |
| 589 | |
| 590 | /* Set clock speed low */ |
| 591 | CsrSdioClaim(priv->sdio); |
| 592 | r = CsrSdioMaxBusClockFrequencySet(priv->sdio, UNIFI_SDIO_CLOCK_SAFE_HZ); |
| 593 | CsrSdioRelease(priv->sdio); |
| 594 | if (r != CSR_RESULT_SUCCESS) { |
| 595 | unifi_error(priv, "CsrSdioMaxBusClockFrequencySet() failed %d\n", r); |
| 596 | } |
| 597 | |
| 598 | /* Card software reset */ |
| 599 | CsrSdioClaim(priv->sdio); |
| 600 | r = unifi_card_hard_reset(priv->card); |
| 601 | CsrSdioRelease(priv->sdio); |
| 602 | if (r != CSR_RESULT_SUCCESS) { |
| 603 | unifi_error(priv, "unifi_card_hard_reset() failed %d\n", r); |
| 604 | } |
| 605 | } else { |
| 606 | unifi_info(priv, "Read chip version of 0x%04x\n", data_u16); |
| 607 | break; |
| 608 | } |
| 609 | } |
| 610 | |
| 611 | if (r != CSR_RESULT_SUCCESS) { |
| 612 | unifi_error(priv, "Failed to prepare chip\n"); |
| 613 | return -EIO; |
| 614 | } |
| 615 | |
| 616 | /* Stop the XAPs for coredump. The PUTEST_STOP must be called, e.g. at |
| 617 | * Raw SDIO deinit, to resume them. |
| 618 | */ |
| 619 | CsrSdioClaim(priv->sdio); |
| 620 | r = unifi_card_stop_processor(priv->card, UNIFI_PROC_BOTH); |
| 621 | CsrSdioRelease(priv->sdio); |
| 622 | if (r != CSR_RESULT_SUCCESS) { |
| 623 | unifi_error(priv, "Failed to stop processors\n"); |
| 624 | } |
| 625 | |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | int unifi_putest_cmd52_block_read(unifi_priv_t *priv, unsigned char *arg) |
| 630 | { |
| 631 | struct unifi_putest_block_cmd52_r block_cmd52; |
| 632 | u8 *arg_pos; |
| 633 | unsigned int cmd_param_size; |
| 634 | CsrResult r; |
| 635 | u8 *block_local_buffer; |
| 636 | |
| 637 | arg_pos = (u8*)(((unifi_putest_command_t*)arg) + 1); |
| 638 | if (get_user(cmd_param_size, (int*)arg_pos)) { |
| 639 | unifi_error(priv, |
| 640 | "cmd52r_block: Failed to get the argument\n"); |
| 641 | return -EFAULT; |
| 642 | } |
| 643 | |
| 644 | if (cmd_param_size != sizeof(struct unifi_putest_block_cmd52_r)) { |
| 645 | unifi_error(priv, |
| 646 | "cmd52r_block: cmd52 struct mismatch\n"); |
| 647 | return -EINVAL; |
| 648 | } |
| 649 | |
| 650 | arg_pos += sizeof(unsigned int); |
| 651 | if (copy_from_user(&block_cmd52, |
| 652 | (void*)arg_pos, |
| 653 | sizeof(struct unifi_putest_block_cmd52_r))) { |
| 654 | unifi_error(priv, |
| 655 | "cmd52r_block: Failed to get the cmd52 params\n"); |
| 656 | return -EFAULT; |
| 657 | } |
| 658 | |
| 659 | unifi_trace(priv, UDBG2, "cmd52r_block: func=%d addr=0x%x len=0x%x ", |
| 660 | block_cmd52.funcnum, block_cmd52.addr, block_cmd52.length); |
| 661 | |
| 662 | block_local_buffer = vmalloc(block_cmd52.length); |
| 663 | if (block_local_buffer == NULL) { |
| 664 | unifi_error(priv, "cmd52r_block: Failed to allocate buffer\n"); |
| 665 | return -ENOMEM; |
| 666 | } |
| 667 | |
| 668 | CsrSdioClaim(priv->sdio); |
| 669 | r = unifi_card_readn(priv->card, block_cmd52.addr, block_local_buffer, block_cmd52.length); |
| 670 | CsrSdioRelease(priv->sdio); |
| 671 | if (r != CSR_RESULT_SUCCESS) { |
| 672 | unifi_error(priv, "cmd52r_block: unifi_readn failed\n"); |
| 673 | return -EIO; |
| 674 | } |
| 675 | |
| 676 | if (copy_to_user((void*)block_cmd52.data, |
| 677 | block_local_buffer, |
| 678 | block_cmd52.length)) { |
| 679 | unifi_error(priv, |
| 680 | "cmd52r_block: Failed to return the data\n"); |
| 681 | return -EFAULT; |
| 682 | } |
| 683 | |
| 684 | return 0; |
| 685 | } |