Luciano Coelho | f5fc0f8 | 2009-08-06 16:25:28 +0300 | [diff] [blame^] | 1 | /* |
| 2 | * This file is part of wl1271 |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 Nokia Corporation |
| 5 | * |
| 6 | * Contact: Luciano Coelho <luciano.coelho@nokia.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License |
| 10 | * version 2 as published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 20 | * 02110-1301 USA |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/platform_device.h> |
| 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/firmware.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/irq.h> |
| 30 | #include <linux/spi/spi.h> |
| 31 | #include <linux/crc32.h> |
| 32 | #include <linux/etherdevice.h> |
| 33 | #include <linux/spi/wl12xx.h> |
| 34 | |
| 35 | #include "wl1271.h" |
| 36 | #include "wl12xx_80211.h" |
| 37 | #include "wl1271_reg.h" |
| 38 | #include "wl1271_spi.h" |
| 39 | #include "wl1271_event.h" |
| 40 | #include "wl1271_tx.h" |
| 41 | #include "wl1271_rx.h" |
| 42 | #include "wl1271_ps.h" |
| 43 | #include "wl1271_init.h" |
| 44 | #include "wl1271_debugfs.h" |
| 45 | #include "wl1271_cmd.h" |
| 46 | #include "wl1271_boot.h" |
| 47 | |
| 48 | static int wl1271_plt_init(struct wl1271 *wl) |
| 49 | { |
| 50 | int ret; |
| 51 | |
| 52 | ret = wl1271_acx_init_mem_config(wl); |
| 53 | if (ret < 0) |
| 54 | return ret; |
| 55 | |
| 56 | ret = wl1271_cmd_data_path(wl, wl->channel, 1); |
| 57 | if (ret < 0) |
| 58 | return ret; |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | static void wl1271_disable_interrupts(struct wl1271 *wl) |
| 64 | { |
| 65 | disable_irq(wl->irq); |
| 66 | } |
| 67 | |
| 68 | static void wl1271_power_off(struct wl1271 *wl) |
| 69 | { |
| 70 | wl->set_power(false); |
| 71 | } |
| 72 | |
| 73 | static void wl1271_power_on(struct wl1271 *wl) |
| 74 | { |
| 75 | wl->set_power(true); |
| 76 | } |
| 77 | |
| 78 | static void wl1271_fw_status(struct wl1271 *wl, struct wl1271_fw_status *status) |
| 79 | { |
| 80 | u32 total = 0; |
| 81 | int i; |
| 82 | |
| 83 | /* |
| 84 | * FIXME: Reading the FW status directly from the registers seems to |
| 85 | * be the right thing to do, but it doesn't work. And in the |
| 86 | * reference driver, there is a workaround called |
| 87 | * USE_SDIO_24M_WORKAROUND, which reads the status from memory |
| 88 | * instead, so we do the same here. |
| 89 | */ |
| 90 | |
| 91 | wl1271_spi_mem_read(wl, STATUS_MEM_ADDRESS, status, sizeof(*status)); |
| 92 | |
| 93 | wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, " |
| 94 | "drv_rx_counter = %d, tx_results_counter = %d)", |
| 95 | status->intr, |
| 96 | status->fw_rx_counter, |
| 97 | status->drv_rx_counter, |
| 98 | status->tx_results_counter); |
| 99 | |
| 100 | /* update number of available TX blocks */ |
| 101 | for (i = 0; i < NUM_TX_QUEUES; i++) { |
| 102 | u32 cnt = status->tx_released_blks[i] - wl->tx_blocks_freed[i]; |
| 103 | wl->tx_blocks_freed[i] = status->tx_released_blks[i]; |
| 104 | wl->tx_blocks_available += cnt; |
| 105 | total += cnt; |
| 106 | } |
| 107 | |
| 108 | /* if more blocks are available now, schedule some tx work */ |
| 109 | if (total && !skb_queue_empty(&wl->tx_queue)) |
| 110 | schedule_work(&wl->tx_work); |
| 111 | |
| 112 | /* update the host-chipset time offset */ |
| 113 | wl->time_offset = jiffies_to_usecs(jiffies) - status->fw_localtime; |
| 114 | } |
| 115 | |
| 116 | #define WL1271_IRQ_MAX_LOOPS 10 |
| 117 | static void wl1271_irq_work(struct work_struct *work) |
| 118 | { |
| 119 | u32 intr, ctr = WL1271_IRQ_MAX_LOOPS; |
| 120 | int ret; |
| 121 | struct wl1271 *wl = |
| 122 | container_of(work, struct wl1271, irq_work); |
| 123 | |
| 124 | mutex_lock(&wl->mutex); |
| 125 | |
| 126 | wl1271_debug(DEBUG_IRQ, "IRQ work"); |
| 127 | |
| 128 | if (wl->state == WL1271_STATE_OFF) |
| 129 | goto out; |
| 130 | |
| 131 | ret = wl1271_ps_elp_wakeup(wl, true); |
| 132 | if (ret < 0) |
| 133 | goto out; |
| 134 | |
| 135 | wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL); |
| 136 | |
| 137 | intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); |
| 138 | if (!intr) { |
| 139 | wl1271_debug(DEBUG_IRQ, "Zero interrupt received."); |
| 140 | goto out_sleep; |
| 141 | } |
| 142 | |
| 143 | intr &= WL1271_INTR_MASK; |
| 144 | |
| 145 | do { |
| 146 | wl1271_fw_status(wl, wl->fw_status); |
| 147 | |
| 148 | |
| 149 | if (intr & (WL1271_ACX_INTR_EVENT_A | |
| 150 | WL1271_ACX_INTR_EVENT_B)) { |
| 151 | wl1271_debug(DEBUG_IRQ, |
| 152 | "WL1271_ACX_INTR_EVENT (0x%x)", intr); |
| 153 | if (intr & WL1271_ACX_INTR_EVENT_A) |
| 154 | wl1271_event_handle(wl, 0); |
| 155 | else |
| 156 | wl1271_event_handle(wl, 1); |
| 157 | } |
| 158 | |
| 159 | if (intr & WL1271_ACX_INTR_INIT_COMPLETE) |
| 160 | wl1271_debug(DEBUG_IRQ, |
| 161 | "WL1271_ACX_INTR_INIT_COMPLETE"); |
| 162 | |
| 163 | if (intr & WL1271_ACX_INTR_HW_AVAILABLE) |
| 164 | wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE"); |
| 165 | |
| 166 | if (intr & WL1271_ACX_INTR_DATA) { |
| 167 | u8 tx_res_cnt = wl->fw_status->tx_results_counter - |
| 168 | wl->tx_results_count; |
| 169 | |
| 170 | wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA"); |
| 171 | |
| 172 | /* check for tx results */ |
| 173 | if (tx_res_cnt) |
| 174 | wl1271_tx_complete(wl, tx_res_cnt); |
| 175 | |
| 176 | wl1271_rx(wl, wl->fw_status); |
| 177 | } |
| 178 | |
| 179 | intr = wl1271_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR); |
| 180 | intr &= WL1271_INTR_MASK; |
| 181 | } while (intr && --ctr); |
| 182 | |
| 183 | out_sleep: |
| 184 | wl1271_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(WL1271_INTR_MASK)); |
| 185 | wl1271_ps_elp_sleep(wl); |
| 186 | |
| 187 | out: |
| 188 | mutex_unlock(&wl->mutex); |
| 189 | } |
| 190 | |
| 191 | static irqreturn_t wl1271_irq(int irq, void *cookie) |
| 192 | { |
| 193 | struct wl1271 *wl; |
| 194 | unsigned long flags; |
| 195 | |
| 196 | wl1271_debug(DEBUG_IRQ, "IRQ"); |
| 197 | |
| 198 | wl = cookie; |
| 199 | |
| 200 | /* complete the ELP completion */ |
| 201 | spin_lock_irqsave(&wl->wl_lock, flags); |
| 202 | if (wl->elp_compl) { |
| 203 | complete(wl->elp_compl); |
| 204 | wl->elp_compl = NULL; |
| 205 | } |
| 206 | |
| 207 | schedule_work(&wl->irq_work); |
| 208 | spin_unlock_irqrestore(&wl->wl_lock, flags); |
| 209 | |
| 210 | return IRQ_HANDLED; |
| 211 | } |
| 212 | |
| 213 | static int wl1271_fetch_firmware(struct wl1271 *wl) |
| 214 | { |
| 215 | const struct firmware *fw; |
| 216 | int ret; |
| 217 | |
| 218 | ret = request_firmware(&fw, WL1271_FW_NAME, &wl->spi->dev); |
| 219 | |
| 220 | if (ret < 0) { |
| 221 | wl1271_error("could not get firmware: %d", ret); |
| 222 | return ret; |
| 223 | } |
| 224 | |
| 225 | if (fw->size % 4) { |
| 226 | wl1271_error("firmware size is not multiple of 32 bits: %zu", |
| 227 | fw->size); |
| 228 | ret = -EILSEQ; |
| 229 | goto out; |
| 230 | } |
| 231 | |
| 232 | wl->fw_len = fw->size; |
| 233 | wl->fw = kmalloc(wl->fw_len, GFP_KERNEL); |
| 234 | |
| 235 | if (!wl->fw) { |
| 236 | wl1271_error("could not allocate memory for the firmware"); |
| 237 | ret = -ENOMEM; |
| 238 | goto out; |
| 239 | } |
| 240 | |
| 241 | memcpy(wl->fw, fw->data, wl->fw_len); |
| 242 | |
| 243 | ret = 0; |
| 244 | |
| 245 | out: |
| 246 | release_firmware(fw); |
| 247 | |
| 248 | return ret; |
| 249 | } |
| 250 | |
| 251 | static int wl1271_fetch_nvs(struct wl1271 *wl) |
| 252 | { |
| 253 | const struct firmware *fw; |
| 254 | int ret; |
| 255 | |
| 256 | ret = request_firmware(&fw, WL1271_NVS_NAME, &wl->spi->dev); |
| 257 | |
| 258 | if (ret < 0) { |
| 259 | wl1271_error("could not get nvs file: %d", ret); |
| 260 | return ret; |
| 261 | } |
| 262 | |
| 263 | if (fw->size % 4) { |
| 264 | wl1271_error("nvs size is not multiple of 32 bits: %zu", |
| 265 | fw->size); |
| 266 | ret = -EILSEQ; |
| 267 | goto out; |
| 268 | } |
| 269 | |
| 270 | wl->nvs_len = fw->size; |
| 271 | wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL); |
| 272 | |
| 273 | if (!wl->nvs) { |
| 274 | wl1271_error("could not allocate memory for the nvs file"); |
| 275 | ret = -ENOMEM; |
| 276 | goto out; |
| 277 | } |
| 278 | |
| 279 | memcpy(wl->nvs, fw->data, wl->nvs_len); |
| 280 | |
| 281 | ret = 0; |
| 282 | |
| 283 | out: |
| 284 | release_firmware(fw); |
| 285 | |
| 286 | return ret; |
| 287 | } |
| 288 | |
| 289 | static void wl1271_fw_wakeup(struct wl1271 *wl) |
| 290 | { |
| 291 | u32 elp_reg; |
| 292 | |
| 293 | elp_reg = ELPCTRL_WAKE_UP; |
| 294 | wl1271_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg); |
| 295 | } |
| 296 | |
| 297 | static int wl1271_setup(struct wl1271 *wl) |
| 298 | { |
| 299 | wl->fw_status = kmalloc(sizeof(*wl->fw_status), GFP_KERNEL); |
| 300 | if (!wl->fw_status) |
| 301 | return -ENOMEM; |
| 302 | |
| 303 | wl->tx_res_if = kmalloc(sizeof(*wl->tx_res_if), GFP_KERNEL); |
| 304 | if (!wl->tx_res_if) { |
| 305 | kfree(wl->fw_status); |
| 306 | return -ENOMEM; |
| 307 | } |
| 308 | |
| 309 | INIT_WORK(&wl->irq_work, wl1271_irq_work); |
| 310 | INIT_WORK(&wl->tx_work, wl1271_tx_work); |
| 311 | return 0; |
| 312 | } |
| 313 | |
| 314 | static int wl1271_chip_wakeup(struct wl1271 *wl) |
| 315 | { |
| 316 | int ret = 0; |
| 317 | |
| 318 | wl1271_power_on(wl); |
| 319 | msleep(WL1271_POWER_ON_SLEEP); |
| 320 | wl1271_spi_reset(wl); |
| 321 | wl1271_spi_init(wl); |
| 322 | |
| 323 | /* We don't need a real memory partition here, because we only want |
| 324 | * to use the registers at this point. */ |
| 325 | wl1271_set_partition(wl, |
| 326 | 0x00000000, |
| 327 | 0x00000000, |
| 328 | REGISTERS_BASE, |
| 329 | REGISTERS_DOWN_SIZE); |
| 330 | |
| 331 | /* ELP module wake up */ |
| 332 | wl1271_fw_wakeup(wl); |
| 333 | |
| 334 | /* whal_FwCtrl_BootSm() */ |
| 335 | |
| 336 | /* 0. read chip id from CHIP_ID */ |
| 337 | wl->chip.id = wl1271_reg_read32(wl, CHIP_ID_B); |
| 338 | |
| 339 | /* 1. check if chip id is valid */ |
| 340 | |
| 341 | switch (wl->chip.id) { |
| 342 | case CHIP_ID_1271_PG10: |
| 343 | wl1271_warning("chip id 0x%x (1271 PG10) support is obsolete", |
| 344 | wl->chip.id); |
| 345 | |
| 346 | ret = wl1271_setup(wl); |
| 347 | if (ret < 0) |
| 348 | goto out; |
| 349 | break; |
| 350 | case CHIP_ID_1271_PG20: |
| 351 | wl1271_debug(DEBUG_BOOT, "chip id 0x%x (1271 PG20)", |
| 352 | wl->chip.id); |
| 353 | |
| 354 | ret = wl1271_setup(wl); |
| 355 | if (ret < 0) |
| 356 | goto out; |
| 357 | break; |
| 358 | default: |
| 359 | wl1271_error("unsupported chip id: 0x%x", wl->chip.id); |
| 360 | ret = -ENODEV; |
| 361 | goto out; |
| 362 | } |
| 363 | |
| 364 | if (wl->fw == NULL) { |
| 365 | ret = wl1271_fetch_firmware(wl); |
| 366 | if (ret < 0) |
| 367 | goto out; |
| 368 | } |
| 369 | |
| 370 | /* No NVS from netlink, try to get it from the filesystem */ |
| 371 | if (wl->nvs == NULL) { |
| 372 | ret = wl1271_fetch_nvs(wl); |
| 373 | if (ret < 0) |
| 374 | goto out; |
| 375 | } |
| 376 | |
| 377 | out: |
| 378 | return ret; |
| 379 | } |
| 380 | |
| 381 | static void wl1271_filter_work(struct work_struct *work) |
| 382 | { |
| 383 | struct wl1271 *wl = |
| 384 | container_of(work, struct wl1271, filter_work); |
| 385 | int ret; |
| 386 | |
| 387 | mutex_lock(&wl->mutex); |
| 388 | |
| 389 | if (wl->state == WL1271_STATE_OFF) |
| 390 | goto out; |
| 391 | |
| 392 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 393 | if (ret < 0) |
| 394 | goto out; |
| 395 | |
| 396 | /* FIXME: replace the magic numbers with proper definitions */ |
| 397 | ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0); |
| 398 | if (ret < 0) |
| 399 | goto out_sleep; |
| 400 | |
| 401 | out_sleep: |
| 402 | wl1271_ps_elp_sleep(wl); |
| 403 | |
| 404 | out: |
| 405 | mutex_unlock(&wl->mutex); |
| 406 | } |
| 407 | |
| 408 | int wl1271_plt_start(struct wl1271 *wl) |
| 409 | { |
| 410 | int ret; |
| 411 | |
| 412 | mutex_lock(&wl->mutex); |
| 413 | |
| 414 | wl1271_notice("power up"); |
| 415 | |
| 416 | if (wl->state != WL1271_STATE_OFF) { |
| 417 | wl1271_error("cannot go into PLT state because not " |
| 418 | "in off state: %d", wl->state); |
| 419 | ret = -EBUSY; |
| 420 | goto out; |
| 421 | } |
| 422 | |
| 423 | wl->state = WL1271_STATE_PLT; |
| 424 | |
| 425 | ret = wl1271_chip_wakeup(wl); |
| 426 | if (ret < 0) |
| 427 | goto out; |
| 428 | |
| 429 | ret = wl1271_boot(wl); |
| 430 | if (ret < 0) |
| 431 | goto out; |
| 432 | |
| 433 | wl1271_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver); |
| 434 | |
| 435 | ret = wl1271_plt_init(wl); |
| 436 | if (ret < 0) |
| 437 | goto out; |
| 438 | |
| 439 | out: |
| 440 | mutex_unlock(&wl->mutex); |
| 441 | |
| 442 | return ret; |
| 443 | } |
| 444 | |
| 445 | int wl1271_plt_stop(struct wl1271 *wl) |
| 446 | { |
| 447 | int ret = 0; |
| 448 | |
| 449 | mutex_lock(&wl->mutex); |
| 450 | |
| 451 | wl1271_notice("power down"); |
| 452 | |
| 453 | if (wl->state != WL1271_STATE_PLT) { |
| 454 | wl1271_error("cannot power down because not in PLT " |
| 455 | "state: %d", wl->state); |
| 456 | ret = -EBUSY; |
| 457 | goto out; |
| 458 | } |
| 459 | |
| 460 | wl1271_disable_interrupts(wl); |
| 461 | wl1271_power_off(wl); |
| 462 | |
| 463 | wl->state = WL1271_STATE_OFF; |
| 464 | |
| 465 | out: |
| 466 | mutex_unlock(&wl->mutex); |
| 467 | |
| 468 | return ret; |
| 469 | } |
| 470 | |
| 471 | |
| 472 | static int wl1271_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
| 473 | { |
| 474 | struct wl1271 *wl = hw->priv; |
| 475 | |
| 476 | skb_queue_tail(&wl->tx_queue, skb); |
| 477 | |
| 478 | /* |
| 479 | * The chip specific setup must run before the first TX packet - |
| 480 | * before that, the tx_work will not be initialized! |
| 481 | */ |
| 482 | |
| 483 | schedule_work(&wl->tx_work); |
| 484 | |
| 485 | /* |
| 486 | * The workqueue is slow to process the tx_queue and we need stop |
| 487 | * the queue here, otherwise the queue will get too long. |
| 488 | */ |
| 489 | if (skb_queue_len(&wl->tx_queue) >= WL1271_TX_QUEUE_MAX_LENGTH) { |
| 490 | ieee80211_stop_queues(wl->hw); |
| 491 | |
| 492 | /* |
| 493 | * FIXME: this is racy, the variable is not properly |
| 494 | * protected. Maybe fix this by removing the stupid |
| 495 | * variable altogether and checking the real queue state? |
| 496 | */ |
| 497 | wl->tx_queue_stopped = true; |
| 498 | } |
| 499 | |
| 500 | return NETDEV_TX_OK; |
| 501 | } |
| 502 | |
| 503 | static int wl1271_op_start(struct ieee80211_hw *hw) |
| 504 | { |
| 505 | struct wl1271 *wl = hw->priv; |
| 506 | int ret = 0; |
| 507 | |
| 508 | wl1271_debug(DEBUG_MAC80211, "mac80211 start"); |
| 509 | |
| 510 | mutex_lock(&wl->mutex); |
| 511 | |
| 512 | if (wl->state != WL1271_STATE_OFF) { |
| 513 | wl1271_error("cannot start because not in off state: %d", |
| 514 | wl->state); |
| 515 | ret = -EBUSY; |
| 516 | goto out; |
| 517 | } |
| 518 | |
| 519 | ret = wl1271_chip_wakeup(wl); |
| 520 | if (ret < 0) |
| 521 | goto out; |
| 522 | |
| 523 | ret = wl1271_boot(wl); |
| 524 | if (ret < 0) |
| 525 | goto out; |
| 526 | |
| 527 | ret = wl1271_hw_init(wl); |
| 528 | if (ret < 0) |
| 529 | goto out; |
| 530 | |
| 531 | wl->state = WL1271_STATE_ON; |
| 532 | |
| 533 | wl1271_info("firmware booted (%s)", wl->chip.fw_ver); |
| 534 | |
| 535 | out: |
| 536 | if (ret < 0) |
| 537 | wl1271_power_off(wl); |
| 538 | |
| 539 | mutex_unlock(&wl->mutex); |
| 540 | |
| 541 | return ret; |
| 542 | } |
| 543 | |
| 544 | static void wl1271_op_stop(struct ieee80211_hw *hw) |
| 545 | { |
| 546 | struct wl1271 *wl = hw->priv; |
| 547 | int i; |
| 548 | |
| 549 | wl1271_info("down"); |
| 550 | |
| 551 | wl1271_debug(DEBUG_MAC80211, "mac80211 stop"); |
| 552 | |
| 553 | mutex_lock(&wl->mutex); |
| 554 | |
| 555 | WARN_ON(wl->state != WL1271_STATE_ON); |
| 556 | |
| 557 | if (wl->scanning) { |
| 558 | mutex_unlock(&wl->mutex); |
| 559 | ieee80211_scan_completed(wl->hw, true); |
| 560 | mutex_lock(&wl->mutex); |
| 561 | wl->scanning = false; |
| 562 | } |
| 563 | |
| 564 | wl->state = WL1271_STATE_OFF; |
| 565 | |
| 566 | wl1271_disable_interrupts(wl); |
| 567 | |
| 568 | mutex_unlock(&wl->mutex); |
| 569 | |
| 570 | cancel_work_sync(&wl->irq_work); |
| 571 | cancel_work_sync(&wl->tx_work); |
| 572 | cancel_work_sync(&wl->filter_work); |
| 573 | |
| 574 | mutex_lock(&wl->mutex); |
| 575 | |
| 576 | /* let's notify MAC80211 about the remaining pending TX frames */ |
| 577 | wl1271_tx_flush(wl); |
| 578 | wl1271_power_off(wl); |
| 579 | |
| 580 | memset(wl->bssid, 0, ETH_ALEN); |
| 581 | memset(wl->ssid, 0, IW_ESSID_MAX_SIZE + 1); |
| 582 | wl->ssid_len = 0; |
| 583 | wl->listen_int = 1; |
| 584 | wl->bss_type = MAX_BSS_TYPE; |
| 585 | |
| 586 | wl->rx_counter = 0; |
| 587 | wl->elp = false; |
| 588 | wl->psm = 0; |
| 589 | wl->tx_queue_stopped = false; |
| 590 | wl->power_level = WL1271_DEFAULT_POWER_LEVEL; |
| 591 | wl->tx_blocks_available = 0; |
| 592 | wl->tx_results_count = 0; |
| 593 | wl->tx_packets_count = 0; |
| 594 | wl->time_offset = 0; |
| 595 | wl->session_counter = 0; |
| 596 | for (i = 0; i < NUM_TX_QUEUES; i++) |
| 597 | wl->tx_blocks_freed[i] = 0; |
| 598 | |
| 599 | wl1271_debugfs_reset(wl); |
| 600 | mutex_unlock(&wl->mutex); |
| 601 | } |
| 602 | |
| 603 | static int wl1271_op_add_interface(struct ieee80211_hw *hw, |
| 604 | struct ieee80211_if_init_conf *conf) |
| 605 | { |
| 606 | struct wl1271 *wl = hw->priv; |
| 607 | DECLARE_MAC_BUF(mac); |
| 608 | int ret = 0; |
| 609 | |
| 610 | wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s", |
| 611 | conf->type, print_mac(mac, conf->mac_addr)); |
| 612 | |
| 613 | mutex_lock(&wl->mutex); |
| 614 | |
| 615 | switch (conf->type) { |
| 616 | case NL80211_IFTYPE_STATION: |
| 617 | wl->bss_type = BSS_TYPE_STA_BSS; |
| 618 | break; |
| 619 | case NL80211_IFTYPE_ADHOC: |
| 620 | wl->bss_type = BSS_TYPE_IBSS; |
| 621 | break; |
| 622 | default: |
| 623 | ret = -EOPNOTSUPP; |
| 624 | goto out; |
| 625 | } |
| 626 | |
| 627 | /* FIXME: what if conf->mac_addr changes? */ |
| 628 | |
| 629 | out: |
| 630 | mutex_unlock(&wl->mutex); |
| 631 | return ret; |
| 632 | } |
| 633 | |
| 634 | static void wl1271_op_remove_interface(struct ieee80211_hw *hw, |
| 635 | struct ieee80211_if_init_conf *conf) |
| 636 | { |
| 637 | wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface"); |
| 638 | } |
| 639 | |
| 640 | #if 0 |
| 641 | static int wl1271_op_config_interface(struct ieee80211_hw *hw, |
| 642 | struct ieee80211_vif *vif, |
| 643 | struct ieee80211_if_conf *conf) |
| 644 | { |
| 645 | struct wl1271 *wl = hw->priv; |
| 646 | struct sk_buff *beacon; |
| 647 | DECLARE_MAC_BUF(mac); |
| 648 | int ret; |
| 649 | |
| 650 | wl1271_debug(DEBUG_MAC80211, "mac80211 config_interface bssid %s", |
| 651 | print_mac(mac, conf->bssid)); |
| 652 | wl1271_dump_ascii(DEBUG_MAC80211, "ssid: ", conf->ssid, |
| 653 | conf->ssid_len); |
| 654 | |
| 655 | mutex_lock(&wl->mutex); |
| 656 | |
| 657 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 658 | if (ret < 0) |
| 659 | goto out; |
| 660 | |
| 661 | memcpy(wl->bssid, conf->bssid, ETH_ALEN); |
| 662 | |
| 663 | ret = wl1271_cmd_build_null_data(wl); |
| 664 | if (ret < 0) |
| 665 | goto out_sleep; |
| 666 | |
| 667 | wl->ssid_len = conf->ssid_len; |
| 668 | if (wl->ssid_len) |
| 669 | memcpy(wl->ssid, conf->ssid, wl->ssid_len); |
| 670 | |
| 671 | if (wl->bss_type != BSS_TYPE_IBSS) { |
| 672 | /* FIXME: replace the magic numbers with proper definitions */ |
| 673 | ret = wl1271_cmd_join(wl, wl->bss_type, 5, 100, 1); |
| 674 | if (ret < 0) |
| 675 | goto out_sleep; |
| 676 | } |
| 677 | |
| 678 | if (conf->changed & IEEE80211_IFCC_BEACON) { |
| 679 | beacon = ieee80211_beacon_get(hw, vif); |
| 680 | ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON, |
| 681 | beacon->data, beacon->len); |
| 682 | |
| 683 | if (ret < 0) { |
| 684 | dev_kfree_skb(beacon); |
| 685 | goto out_sleep; |
| 686 | } |
| 687 | |
| 688 | ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE, |
| 689 | beacon->data, beacon->len); |
| 690 | |
| 691 | dev_kfree_skb(beacon); |
| 692 | |
| 693 | if (ret < 0) |
| 694 | goto out_sleep; |
| 695 | |
| 696 | /* FIXME: replace the magic numbers with proper definitions */ |
| 697 | ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0); |
| 698 | |
| 699 | if (ret < 0) |
| 700 | goto out_sleep; |
| 701 | } |
| 702 | |
| 703 | out_sleep: |
| 704 | wl1271_ps_elp_sleep(wl); |
| 705 | |
| 706 | out: |
| 707 | mutex_unlock(&wl->mutex); |
| 708 | |
| 709 | return ret; |
| 710 | } |
| 711 | #endif |
| 712 | |
| 713 | static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed) |
| 714 | { |
| 715 | struct wl1271 *wl = hw->priv; |
| 716 | struct ieee80211_conf *conf = &hw->conf; |
| 717 | int channel, ret = 0; |
| 718 | |
| 719 | channel = ieee80211_frequency_to_channel(conf->channel->center_freq); |
| 720 | |
| 721 | wl1271_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d", |
| 722 | channel, |
| 723 | conf->flags & IEEE80211_CONF_PS ? "on" : "off", |
| 724 | conf->power_level); |
| 725 | |
| 726 | mutex_lock(&wl->mutex); |
| 727 | |
| 728 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 729 | if (ret < 0) |
| 730 | goto out; |
| 731 | |
| 732 | if (channel != wl->channel) { |
| 733 | u8 old_channel = wl->channel; |
| 734 | wl->channel = channel; |
| 735 | |
| 736 | /* FIXME: use beacon interval provided by mac80211 */ |
| 737 | ret = wl1271_cmd_join(wl, wl->bss_type, 1, 100, 0); |
| 738 | if (ret < 0) { |
| 739 | wl->channel = old_channel; |
| 740 | goto out_sleep; |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | ret = wl1271_cmd_build_null_data(wl); |
| 745 | if (ret < 0) |
| 746 | goto out_sleep; |
| 747 | |
| 748 | if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) { |
| 749 | wl1271_info("psm enabled"); |
| 750 | |
| 751 | wl->psm_requested = true; |
| 752 | |
| 753 | /* |
| 754 | * We enter PSM only if we're already associated. |
| 755 | * If we're not, we'll enter it when joining an SSID, |
| 756 | * through the bss_info_changed() hook. |
| 757 | */ |
| 758 | ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE); |
| 759 | } else if (!(conf->flags & IEEE80211_CONF_PS) && |
| 760 | wl->psm_requested) { |
| 761 | wl1271_info("psm disabled"); |
| 762 | |
| 763 | wl->psm_requested = false; |
| 764 | |
| 765 | if (wl->psm) |
| 766 | ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE); |
| 767 | } |
| 768 | |
| 769 | if (conf->power_level != wl->power_level) { |
| 770 | ret = wl1271_acx_tx_power(wl, conf->power_level); |
| 771 | if (ret < 0) |
| 772 | goto out; |
| 773 | |
| 774 | wl->power_level = conf->power_level; |
| 775 | } |
| 776 | |
| 777 | out_sleep: |
| 778 | wl1271_ps_elp_sleep(wl); |
| 779 | |
| 780 | out: |
| 781 | mutex_unlock(&wl->mutex); |
| 782 | |
| 783 | return ret; |
| 784 | } |
| 785 | |
| 786 | #define WL1271_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ |
| 787 | FIF_ALLMULTI | \ |
| 788 | FIF_FCSFAIL | \ |
| 789 | FIF_BCN_PRBRESP_PROMISC | \ |
| 790 | FIF_CONTROL | \ |
| 791 | FIF_OTHER_BSS) |
| 792 | |
| 793 | static void wl1271_op_configure_filter(struct ieee80211_hw *hw, |
| 794 | unsigned int changed, |
| 795 | unsigned int *total, |
| 796 | int mc_count, |
| 797 | struct dev_addr_list *mc_list) |
| 798 | { |
| 799 | struct wl1271 *wl = hw->priv; |
| 800 | |
| 801 | wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter"); |
| 802 | |
| 803 | *total &= WL1271_SUPPORTED_FILTERS; |
| 804 | changed &= WL1271_SUPPORTED_FILTERS; |
| 805 | |
| 806 | if (changed == 0) |
| 807 | return; |
| 808 | |
| 809 | /* FIXME: wl->rx_config and wl->rx_filter are not protected */ |
| 810 | wl->rx_config = WL1271_DEFAULT_RX_CONFIG; |
| 811 | wl->rx_filter = WL1271_DEFAULT_RX_FILTER; |
| 812 | |
| 813 | /* |
| 814 | * FIXME: workqueues need to be properly cancelled on stop(), for |
| 815 | * now let's just disable changing the filter settings. They will |
| 816 | * be updated any on config(). |
| 817 | */ |
| 818 | /* schedule_work(&wl->filter_work); */ |
| 819 | } |
| 820 | |
| 821 | static int wl1271_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
| 822 | struct ieee80211_vif *vif, |
| 823 | struct ieee80211_sta *sta, |
| 824 | struct ieee80211_key_conf *key_conf) |
| 825 | { |
| 826 | struct wl1271 *wl = hw->priv; |
| 827 | const u8 *addr; |
| 828 | int ret; |
| 829 | u8 key_type; |
| 830 | |
| 831 | static const u8 bcast_addr[ETH_ALEN] = |
| 832 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
| 833 | |
| 834 | wl1271_debug(DEBUG_MAC80211, "mac80211 set key"); |
| 835 | |
| 836 | addr = sta ? sta->addr : bcast_addr; |
| 837 | |
| 838 | wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd); |
| 839 | wl1271_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN); |
| 840 | wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", |
| 841 | key_conf->alg, key_conf->keyidx, |
| 842 | key_conf->keylen, key_conf->flags); |
| 843 | wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen); |
| 844 | |
| 845 | if (is_zero_ether_addr(addr)) { |
| 846 | /* We dont support TX only encryption */ |
| 847 | ret = -EOPNOTSUPP; |
| 848 | goto out; |
| 849 | } |
| 850 | |
| 851 | mutex_lock(&wl->mutex); |
| 852 | |
| 853 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 854 | if (ret < 0) |
| 855 | goto out_unlock; |
| 856 | |
| 857 | switch (key_conf->alg) { |
| 858 | case ALG_WEP: |
| 859 | key_type = KEY_WEP; |
| 860 | |
| 861 | key_conf->hw_key_idx = key_conf->keyidx; |
| 862 | break; |
| 863 | case ALG_TKIP: |
| 864 | key_type = KEY_TKIP; |
| 865 | |
| 866 | key_conf->hw_key_idx = key_conf->keyidx; |
| 867 | break; |
| 868 | case ALG_CCMP: |
| 869 | key_type = KEY_AES; |
| 870 | |
| 871 | key_conf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; |
| 872 | break; |
| 873 | default: |
| 874 | wl1271_error("Unknown key algo 0x%x", key_conf->alg); |
| 875 | |
| 876 | ret = -EOPNOTSUPP; |
| 877 | goto out_sleep; |
| 878 | } |
| 879 | |
| 880 | switch (cmd) { |
| 881 | case SET_KEY: |
| 882 | ret = wl1271_cmd_set_key(wl, KEY_ADD_OR_REPLACE, |
| 883 | key_conf->keyidx, key_type, |
| 884 | key_conf->keylen, key_conf->key, |
| 885 | addr); |
| 886 | if (ret < 0) { |
| 887 | wl1271_error("Could not add or replace key"); |
| 888 | goto out_sleep; |
| 889 | } |
| 890 | break; |
| 891 | |
| 892 | case DISABLE_KEY: |
| 893 | ret = wl1271_cmd_set_key(wl, KEY_REMOVE, |
| 894 | key_conf->keyidx, key_type, |
| 895 | key_conf->keylen, key_conf->key, |
| 896 | addr); |
| 897 | if (ret < 0) { |
| 898 | wl1271_error("Could not remove key"); |
| 899 | goto out_sleep; |
| 900 | } |
| 901 | break; |
| 902 | |
| 903 | default: |
| 904 | wl1271_error("Unsupported key cmd 0x%x", cmd); |
| 905 | ret = -EOPNOTSUPP; |
| 906 | goto out_sleep; |
| 907 | |
| 908 | break; |
| 909 | } |
| 910 | |
| 911 | out_sleep: |
| 912 | wl1271_ps_elp_sleep(wl); |
| 913 | |
| 914 | out_unlock: |
| 915 | mutex_unlock(&wl->mutex); |
| 916 | |
| 917 | out: |
| 918 | return ret; |
| 919 | } |
| 920 | |
| 921 | static int wl1271_op_hw_scan(struct ieee80211_hw *hw, |
| 922 | struct cfg80211_scan_request *req) |
| 923 | { |
| 924 | struct wl1271 *wl = hw->priv; |
| 925 | int ret; |
| 926 | u8 *ssid = NULL; |
| 927 | size_t ssid_len = 0; |
| 928 | |
| 929 | wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan"); |
| 930 | |
| 931 | if (req->n_ssids) { |
| 932 | ssid = req->ssids[0].ssid; |
| 933 | ssid_len = req->ssids[0].ssid_len; |
| 934 | } |
| 935 | |
| 936 | mutex_lock(&wl->mutex); |
| 937 | |
| 938 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 939 | if (ret < 0) |
| 940 | goto out; |
| 941 | |
| 942 | ret = wl1271_cmd_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3); |
| 943 | |
| 944 | wl1271_ps_elp_sleep(wl); |
| 945 | |
| 946 | out: |
| 947 | mutex_unlock(&wl->mutex); |
| 948 | |
| 949 | return ret; |
| 950 | } |
| 951 | |
| 952 | static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) |
| 953 | { |
| 954 | struct wl1271 *wl = hw->priv; |
| 955 | int ret; |
| 956 | |
| 957 | mutex_lock(&wl->mutex); |
| 958 | |
| 959 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 960 | if (ret < 0) |
| 961 | goto out; |
| 962 | |
| 963 | ret = wl1271_acx_rts_threshold(wl, (u16) value); |
| 964 | if (ret < 0) |
| 965 | wl1271_warning("wl1271_op_set_rts_threshold failed: %d", ret); |
| 966 | |
| 967 | wl1271_ps_elp_sleep(wl); |
| 968 | |
| 969 | out: |
| 970 | mutex_unlock(&wl->mutex); |
| 971 | |
| 972 | return ret; |
| 973 | } |
| 974 | |
| 975 | static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw, |
| 976 | struct ieee80211_vif *vif, |
| 977 | struct ieee80211_bss_conf *bss_conf, |
| 978 | u32 changed) |
| 979 | { |
| 980 | enum wl1271_cmd_ps_mode mode; |
| 981 | struct wl1271 *wl = hw->priv; |
| 982 | int ret; |
| 983 | |
| 984 | wl1271_debug(DEBUG_MAC80211, "mac80211 bss info changed"); |
| 985 | |
| 986 | mutex_lock(&wl->mutex); |
| 987 | |
| 988 | ret = wl1271_ps_elp_wakeup(wl, false); |
| 989 | if (ret < 0) |
| 990 | goto out; |
| 991 | |
| 992 | if (changed & BSS_CHANGED_ASSOC) { |
| 993 | if (bss_conf->assoc) { |
| 994 | wl->aid = bss_conf->aid; |
| 995 | |
| 996 | ret = wl1271_cmd_build_ps_poll(wl, wl->aid); |
| 997 | if (ret < 0) |
| 998 | goto out_sleep; |
| 999 | |
| 1000 | ret = wl1271_acx_aid(wl, wl->aid); |
| 1001 | if (ret < 0) |
| 1002 | goto out_sleep; |
| 1003 | |
| 1004 | /* If we want to go in PSM but we're not there yet */ |
| 1005 | if (wl->psm_requested && !wl->psm) { |
| 1006 | mode = STATION_POWER_SAVE_MODE; |
| 1007 | ret = wl1271_ps_set_mode(wl, mode); |
| 1008 | if (ret < 0) |
| 1009 | goto out_sleep; |
| 1010 | } |
| 1011 | } |
| 1012 | } |
| 1013 | if (changed & BSS_CHANGED_ERP_SLOT) { |
| 1014 | if (bss_conf->use_short_slot) |
| 1015 | ret = wl1271_acx_slot(wl, SLOT_TIME_SHORT); |
| 1016 | else |
| 1017 | ret = wl1271_acx_slot(wl, SLOT_TIME_LONG); |
| 1018 | if (ret < 0) { |
| 1019 | wl1271_warning("Set slot time failed %d", ret); |
| 1020 | goto out_sleep; |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { |
| 1025 | if (bss_conf->use_short_preamble) |
| 1026 | wl1271_acx_set_preamble(wl, ACX_PREAMBLE_SHORT); |
| 1027 | else |
| 1028 | wl1271_acx_set_preamble(wl, ACX_PREAMBLE_LONG); |
| 1029 | } |
| 1030 | |
| 1031 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { |
| 1032 | if (bss_conf->use_cts_prot) |
| 1033 | ret = wl1271_acx_cts_protect(wl, CTSPROTECT_ENABLE); |
| 1034 | else |
| 1035 | ret = wl1271_acx_cts_protect(wl, CTSPROTECT_DISABLE); |
| 1036 | if (ret < 0) { |
| 1037 | wl1271_warning("Set ctsprotect failed %d", ret); |
| 1038 | goto out_sleep; |
| 1039 | } |
| 1040 | } |
| 1041 | |
| 1042 | out_sleep: |
| 1043 | wl1271_ps_elp_sleep(wl); |
| 1044 | |
| 1045 | out: |
| 1046 | mutex_unlock(&wl->mutex); |
| 1047 | } |
| 1048 | |
| 1049 | |
| 1050 | /* can't be const, mac80211 writes to this */ |
| 1051 | static struct ieee80211_rate wl1271_rates[] = { |
| 1052 | { .bitrate = 10, |
| 1053 | .hw_value = 0x1, |
| 1054 | .hw_value_short = 0x1, }, |
| 1055 | { .bitrate = 20, |
| 1056 | .hw_value = 0x2, |
| 1057 | .hw_value_short = 0x2, |
| 1058 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 1059 | { .bitrate = 55, |
| 1060 | .hw_value = 0x4, |
| 1061 | .hw_value_short = 0x4, |
| 1062 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 1063 | { .bitrate = 110, |
| 1064 | .hw_value = 0x20, |
| 1065 | .hw_value_short = 0x20, |
| 1066 | .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
| 1067 | { .bitrate = 60, |
| 1068 | .hw_value = 0x8, |
| 1069 | .hw_value_short = 0x8, }, |
| 1070 | { .bitrate = 90, |
| 1071 | .hw_value = 0x10, |
| 1072 | .hw_value_short = 0x10, }, |
| 1073 | { .bitrate = 120, |
| 1074 | .hw_value = 0x40, |
| 1075 | .hw_value_short = 0x40, }, |
| 1076 | { .bitrate = 180, |
| 1077 | .hw_value = 0x80, |
| 1078 | .hw_value_short = 0x80, }, |
| 1079 | { .bitrate = 240, |
| 1080 | .hw_value = 0x200, |
| 1081 | .hw_value_short = 0x200, }, |
| 1082 | { .bitrate = 360, |
| 1083 | .hw_value = 0x400, |
| 1084 | .hw_value_short = 0x400, }, |
| 1085 | { .bitrate = 480, |
| 1086 | .hw_value = 0x800, |
| 1087 | .hw_value_short = 0x800, }, |
| 1088 | { .bitrate = 540, |
| 1089 | .hw_value = 0x1000, |
| 1090 | .hw_value_short = 0x1000, }, |
| 1091 | }; |
| 1092 | |
| 1093 | /* can't be const, mac80211 writes to this */ |
| 1094 | static struct ieee80211_channel wl1271_channels[] = { |
| 1095 | { .hw_value = 1, .center_freq = 2412}, |
| 1096 | { .hw_value = 2, .center_freq = 2417}, |
| 1097 | { .hw_value = 3, .center_freq = 2422}, |
| 1098 | { .hw_value = 4, .center_freq = 2427}, |
| 1099 | { .hw_value = 5, .center_freq = 2432}, |
| 1100 | { .hw_value = 6, .center_freq = 2437}, |
| 1101 | { .hw_value = 7, .center_freq = 2442}, |
| 1102 | { .hw_value = 8, .center_freq = 2447}, |
| 1103 | { .hw_value = 9, .center_freq = 2452}, |
| 1104 | { .hw_value = 10, .center_freq = 2457}, |
| 1105 | { .hw_value = 11, .center_freq = 2462}, |
| 1106 | { .hw_value = 12, .center_freq = 2467}, |
| 1107 | { .hw_value = 13, .center_freq = 2472}, |
| 1108 | }; |
| 1109 | |
| 1110 | /* can't be const, mac80211 writes to this */ |
| 1111 | static struct ieee80211_supported_band wl1271_band_2ghz = { |
| 1112 | .channels = wl1271_channels, |
| 1113 | .n_channels = ARRAY_SIZE(wl1271_channels), |
| 1114 | .bitrates = wl1271_rates, |
| 1115 | .n_bitrates = ARRAY_SIZE(wl1271_rates), |
| 1116 | }; |
| 1117 | |
| 1118 | static const struct ieee80211_ops wl1271_ops = { |
| 1119 | .start = wl1271_op_start, |
| 1120 | .stop = wl1271_op_stop, |
| 1121 | .add_interface = wl1271_op_add_interface, |
| 1122 | .remove_interface = wl1271_op_remove_interface, |
| 1123 | .config = wl1271_op_config, |
| 1124 | /* .config_interface = wl1271_op_config_interface, */ |
| 1125 | .configure_filter = wl1271_op_configure_filter, |
| 1126 | .tx = wl1271_op_tx, |
| 1127 | .set_key = wl1271_op_set_key, |
| 1128 | .hw_scan = wl1271_op_hw_scan, |
| 1129 | .bss_info_changed = wl1271_op_bss_info_changed, |
| 1130 | .set_rts_threshold = wl1271_op_set_rts_threshold, |
| 1131 | }; |
| 1132 | |
| 1133 | static int wl1271_register_hw(struct wl1271 *wl) |
| 1134 | { |
| 1135 | int ret; |
| 1136 | |
| 1137 | if (wl->mac80211_registered) |
| 1138 | return 0; |
| 1139 | |
| 1140 | SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr); |
| 1141 | |
| 1142 | ret = ieee80211_register_hw(wl->hw); |
| 1143 | if (ret < 0) { |
| 1144 | wl1271_error("unable to register mac80211 hw: %d", ret); |
| 1145 | return ret; |
| 1146 | } |
| 1147 | |
| 1148 | wl->mac80211_registered = true; |
| 1149 | |
| 1150 | wl1271_notice("loaded"); |
| 1151 | |
| 1152 | return 0; |
| 1153 | } |
| 1154 | |
| 1155 | static int wl1271_init_ieee80211(struct wl1271 *wl) |
| 1156 | { |
| 1157 | /* |
| 1158 | * The tx descriptor buffer and the TKIP space. |
| 1159 | * |
| 1160 | * FIXME: add correct 1271 descriptor size |
| 1161 | */ |
| 1162 | wl->hw->extra_tx_headroom = WL1271_TKIP_IV_SPACE; |
| 1163 | |
| 1164 | /* unit us */ |
| 1165 | /* FIXME: find a proper value */ |
| 1166 | wl->hw->channel_change_time = 10000; |
| 1167 | |
| 1168 | wl->hw->flags = IEEE80211_HW_SIGNAL_DBM | |
| 1169 | IEEE80211_HW_NOISE_DBM; |
| 1170 | |
| 1171 | wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
| 1172 | wl->hw->wiphy->max_scan_ssids = 1; |
| 1173 | wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1271_band_2ghz; |
| 1174 | |
| 1175 | SET_IEEE80211_DEV(wl->hw, &wl->spi->dev); |
| 1176 | |
| 1177 | return 0; |
| 1178 | } |
| 1179 | |
| 1180 | static void wl1271_device_release(struct device *dev) |
| 1181 | { |
| 1182 | |
| 1183 | } |
| 1184 | |
| 1185 | static struct platform_device wl1271_device = { |
| 1186 | .name = "wl1271", |
| 1187 | .id = -1, |
| 1188 | |
| 1189 | /* device model insists to have a release function */ |
| 1190 | .dev = { |
| 1191 | .release = wl1271_device_release, |
| 1192 | }, |
| 1193 | }; |
| 1194 | |
| 1195 | #define WL1271_DEFAULT_CHANNEL 0 |
| 1196 | static int __devinit wl1271_probe(struct spi_device *spi) |
| 1197 | { |
| 1198 | struct wl12xx_platform_data *pdata; |
| 1199 | struct ieee80211_hw *hw; |
| 1200 | struct wl1271 *wl; |
| 1201 | int ret, i; |
| 1202 | static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf}; |
| 1203 | |
| 1204 | pdata = spi->dev.platform_data; |
| 1205 | if (!pdata) { |
| 1206 | wl1271_error("no platform data"); |
| 1207 | return -ENODEV; |
| 1208 | } |
| 1209 | |
| 1210 | hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops); |
| 1211 | if (!hw) { |
| 1212 | wl1271_error("could not alloc ieee80211_hw"); |
| 1213 | return -ENOMEM; |
| 1214 | } |
| 1215 | |
| 1216 | wl = hw->priv; |
| 1217 | memset(wl, 0, sizeof(*wl)); |
| 1218 | |
| 1219 | wl->hw = hw; |
| 1220 | dev_set_drvdata(&spi->dev, wl); |
| 1221 | wl->spi = spi; |
| 1222 | |
| 1223 | skb_queue_head_init(&wl->tx_queue); |
| 1224 | |
| 1225 | INIT_WORK(&wl->filter_work, wl1271_filter_work); |
| 1226 | wl->channel = WL1271_DEFAULT_CHANNEL; |
| 1227 | wl->scanning = false; |
| 1228 | wl->default_key = 0; |
| 1229 | wl->listen_int = 1; |
| 1230 | wl->rx_counter = 0; |
| 1231 | wl->rx_config = WL1271_DEFAULT_RX_CONFIG; |
| 1232 | wl->rx_filter = WL1271_DEFAULT_RX_FILTER; |
| 1233 | wl->elp = false; |
| 1234 | wl->psm = 0; |
| 1235 | wl->psm_requested = false; |
| 1236 | wl->tx_queue_stopped = false; |
| 1237 | wl->power_level = WL1271_DEFAULT_POWER_LEVEL; |
| 1238 | |
| 1239 | /* We use the default power on sleep time until we know which chip |
| 1240 | * we're using */ |
| 1241 | for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++) |
| 1242 | wl->tx_frames[i] = NULL; |
| 1243 | |
| 1244 | spin_lock_init(&wl->wl_lock); |
| 1245 | |
| 1246 | /* |
| 1247 | * In case our MAC address is not correctly set, |
| 1248 | * we use a random but Nokia MAC. |
| 1249 | */ |
| 1250 | memcpy(wl->mac_addr, nokia_oui, 3); |
| 1251 | get_random_bytes(wl->mac_addr + 3, 3); |
| 1252 | |
| 1253 | wl->state = WL1271_STATE_OFF; |
| 1254 | mutex_init(&wl->mutex); |
| 1255 | |
| 1256 | wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL); |
| 1257 | if (!wl->rx_descriptor) { |
| 1258 | wl1271_error("could not allocate memory for rx descriptor"); |
| 1259 | ret = -ENOMEM; |
| 1260 | goto out_free; |
| 1261 | } |
| 1262 | |
| 1263 | /* This is the only SPI value that we need to set here, the rest |
| 1264 | * comes from the board-peripherals file */ |
| 1265 | spi->bits_per_word = 32; |
| 1266 | |
| 1267 | ret = spi_setup(spi); |
| 1268 | if (ret < 0) { |
| 1269 | wl1271_error("spi_setup failed"); |
| 1270 | goto out_free; |
| 1271 | } |
| 1272 | |
| 1273 | wl->set_power = pdata->set_power; |
| 1274 | if (!wl->set_power) { |
| 1275 | wl1271_error("set power function missing in platform data"); |
| 1276 | ret = -ENODEV; |
| 1277 | goto out_free; |
| 1278 | } |
| 1279 | |
| 1280 | wl->irq = spi->irq; |
| 1281 | if (wl->irq < 0) { |
| 1282 | wl1271_error("irq missing in platform data"); |
| 1283 | ret = -ENODEV; |
| 1284 | goto out_free; |
| 1285 | } |
| 1286 | |
| 1287 | ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl); |
| 1288 | if (ret < 0) { |
| 1289 | wl1271_error("request_irq() failed: %d", ret); |
| 1290 | goto out_free; |
| 1291 | } |
| 1292 | |
| 1293 | set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING); |
| 1294 | |
| 1295 | disable_irq(wl->irq); |
| 1296 | |
| 1297 | ret = platform_device_register(&wl1271_device); |
| 1298 | if (ret) { |
| 1299 | wl1271_error("couldn't register platform device"); |
| 1300 | goto out_irq; |
| 1301 | } |
| 1302 | dev_set_drvdata(&wl1271_device.dev, wl); |
| 1303 | |
| 1304 | ret = wl1271_init_ieee80211(wl); |
| 1305 | if (ret) |
| 1306 | goto out_platform; |
| 1307 | |
| 1308 | ret = wl1271_register_hw(wl); |
| 1309 | if (ret) |
| 1310 | goto out_platform; |
| 1311 | |
| 1312 | wl1271_debugfs_init(wl); |
| 1313 | |
| 1314 | wl1271_notice("initialized"); |
| 1315 | |
| 1316 | return 0; |
| 1317 | |
| 1318 | out_platform: |
| 1319 | platform_device_unregister(&wl1271_device); |
| 1320 | |
| 1321 | out_irq: |
| 1322 | free_irq(wl->irq, wl); |
| 1323 | |
| 1324 | out_free: |
| 1325 | kfree(wl->rx_descriptor); |
| 1326 | wl->rx_descriptor = NULL; |
| 1327 | |
| 1328 | ieee80211_free_hw(hw); |
| 1329 | |
| 1330 | return ret; |
| 1331 | } |
| 1332 | |
| 1333 | static int __devexit wl1271_remove(struct spi_device *spi) |
| 1334 | { |
| 1335 | struct wl1271 *wl = dev_get_drvdata(&spi->dev); |
| 1336 | |
| 1337 | ieee80211_unregister_hw(wl->hw); |
| 1338 | |
| 1339 | wl1271_debugfs_exit(wl); |
| 1340 | platform_device_unregister(&wl1271_device); |
| 1341 | free_irq(wl->irq, wl); |
| 1342 | kfree(wl->target_mem_map); |
| 1343 | kfree(wl->fw); |
| 1344 | wl->fw = NULL; |
| 1345 | kfree(wl->nvs); |
| 1346 | wl->nvs = NULL; |
| 1347 | |
| 1348 | kfree(wl->rx_descriptor); |
| 1349 | wl->rx_descriptor = NULL; |
| 1350 | |
| 1351 | kfree(wl->fw_status); |
| 1352 | kfree(wl->tx_res_if); |
| 1353 | |
| 1354 | ieee80211_free_hw(wl->hw); |
| 1355 | |
| 1356 | return 0; |
| 1357 | } |
| 1358 | |
| 1359 | |
| 1360 | static struct spi_driver wl1271_spi_driver = { |
| 1361 | .driver = { |
| 1362 | .name = "wl1271", |
| 1363 | .bus = &spi_bus_type, |
| 1364 | .owner = THIS_MODULE, |
| 1365 | }, |
| 1366 | |
| 1367 | .probe = wl1271_probe, |
| 1368 | .remove = __devexit_p(wl1271_remove), |
| 1369 | }; |
| 1370 | |
| 1371 | static int __init wl1271_init(void) |
| 1372 | { |
| 1373 | int ret; |
| 1374 | |
| 1375 | ret = spi_register_driver(&wl1271_spi_driver); |
| 1376 | if (ret < 0) { |
| 1377 | wl1271_error("failed to register spi driver: %d", ret); |
| 1378 | goto out; |
| 1379 | } |
| 1380 | |
| 1381 | out: |
| 1382 | return ret; |
| 1383 | } |
| 1384 | |
| 1385 | static void __exit wl1271_exit(void) |
| 1386 | { |
| 1387 | spi_unregister_driver(&wl1271_spi_driver); |
| 1388 | |
| 1389 | wl1271_notice("unloaded"); |
| 1390 | } |
| 1391 | |
| 1392 | module_init(wl1271_init); |
| 1393 | module_exit(wl1271_exit); |
| 1394 | |
| 1395 | MODULE_LICENSE("GPL"); |
| 1396 | MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>"); |