1 /* 2 * drivers/net/wireless/mwl8k.c 3 * Driver for Marvell TOPDOG 802.11 Wireless cards 4 * 5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc. 6 * 7 * This file is licensed under the terms of the GNU General Public 8 * License version 2. This program is licensed "as is" without any 9 * warranty of any kind, whether express or implied. 10 */ 11 12 #include <linux/interrupt.h> 13 #include <linux/module.h> 14 #include <linux/kernel.h> 15 #include <linux/sched.h> 16 #include <linux/spinlock.h> 17 #include <linux/list.h> 18 #include <linux/pci.h> 19 #include <linux/delay.h> 20 #include <linux/completion.h> 21 #include <linux/etherdevice.h> 22 #include <linux/slab.h> 23 #include <net/mac80211.h> 24 #include <linux/moduleparam.h> 25 #include <linux/firmware.h> 26 #include <linux/workqueue.h> 27 28 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" 29 #define MWL8K_NAME KBUILD_MODNAME 30 #define MWL8K_VERSION "0.13" 31 32 /* Module parameters */ 33 static bool ap_mode_default; 34 module_param(ap_mode_default, bool, 0); 35 MODULE_PARM_DESC(ap_mode_default, 36 "Set to 1 to make ap mode the default instead of sta mode"); 37 38 /* Register definitions */ 39 #define MWL8K_HIU_GEN_PTR 0x00000c10 40 #define MWL8K_MODE_STA 0x0000005a 41 #define MWL8K_MODE_AP 0x000000a5 42 #define MWL8K_HIU_INT_CODE 0x00000c14 43 #define MWL8K_FWSTA_READY 0xf0f1f2f4 44 #define MWL8K_FWAP_READY 0xf1f2f4a5 45 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005 46 #define MWL8K_HIU_SCRATCH 0x00000c40 47 48 /* Host->device communications */ 49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18 50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c 51 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20 52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24 53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28 54 #define MWL8K_H2A_INT_DUMMY (1 << 20) 55 #define MWL8K_H2A_INT_RESET (1 << 15) 56 #define MWL8K_H2A_INT_DOORBELL (1 << 1) 57 #define MWL8K_H2A_INT_PPA_READY (1 << 0) 58 59 /* Device->host communications */ 60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c 61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30 62 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34 63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38 64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c 65 #define MWL8K_A2H_INT_DUMMY (1 << 20) 66 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14) 67 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11) 68 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10) 69 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7) 70 #define MWL8K_A2H_INT_RADIO_ON (1 << 6) 71 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5) 72 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3) 73 #define MWL8K_A2H_INT_OPC_DONE (1 << 2) 74 #define MWL8K_A2H_INT_RX_READY (1 << 1) 75 #define MWL8K_A2H_INT_TX_DONE (1 << 0) 76 77 /* HW micro second timer register 78 * located at offset 0xA600. This 79 * will be used to timestamp tx 80 * packets. 81 */ 82 83 #define MWL8K_HW_TIMER_REGISTER 0x0000a600 84 #define BBU_RXRDY_CNT_REG 0x0000a860 85 #define NOK_CCA_CNT_REG 0x0000a6a0 86 #define BBU_AVG_NOISE_VAL 0x67 87 88 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ 89 MWL8K_A2H_INT_CHNL_SWITCHED | \ 90 MWL8K_A2H_INT_QUEUE_EMPTY | \ 91 MWL8K_A2H_INT_RADAR_DETECT | \ 92 MWL8K_A2H_INT_RADIO_ON | \ 93 MWL8K_A2H_INT_RADIO_OFF | \ 94 MWL8K_A2H_INT_MAC_EVENT | \ 95 MWL8K_A2H_INT_OPC_DONE | \ 96 MWL8K_A2H_INT_RX_READY | \ 97 MWL8K_A2H_INT_TX_DONE | \ 98 MWL8K_A2H_INT_BA_WATCHDOG) 99 100 #define MWL8K_RX_QUEUES 1 101 #define MWL8K_TX_WMM_QUEUES 4 102 #define MWL8K_MAX_AMPDU_QUEUES 8 103 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES) 104 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues) 105 106 /* txpriorities are mapped with hw queues. 107 * Each hw queue has a txpriority. 108 */ 109 #define TOTAL_HW_TX_QUEUES 8 110 111 /* Each HW queue can have one AMPDU stream. 112 * But, because one of the hw queue is reserved, 113 * maximum AMPDU queues that can be created are 114 * one short of total tx queues. 115 */ 116 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1) 117 118 #define MWL8K_NUM_CHANS 18 119 120 struct rxd_ops { 121 int rxd_size; 122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr); 123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len); 124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status, 125 __le16 *qos, s8 *noise); 126 }; 127 128 struct mwl8k_device_info { 129 char *part_name; 130 char *helper_image; 131 char *fw_image_sta; 132 char *fw_image_ap; 133 struct rxd_ops *ap_rxd_ops; 134 u32 fw_api_ap; 135 }; 136 137 struct mwl8k_rx_queue { 138 int rxd_count; 139 140 /* hw receives here */ 141 int head; 142 143 /* refill descs here */ 144 int tail; 145 146 void *rxd; 147 dma_addr_t rxd_dma; 148 struct { 149 struct sk_buff *skb; 150 DEFINE_DMA_UNMAP_ADDR(dma); 151 } *buf; 152 }; 153 154 struct mwl8k_tx_queue { 155 /* hw transmits here */ 156 int head; 157 158 /* sw appends here */ 159 int tail; 160 161 unsigned int len; 162 struct mwl8k_tx_desc *txd; 163 dma_addr_t txd_dma; 164 struct sk_buff **skb; 165 }; 166 167 enum { 168 AMPDU_NO_STREAM, 169 AMPDU_STREAM_NEW, 170 AMPDU_STREAM_IN_PROGRESS, 171 AMPDU_STREAM_ACTIVE, 172 }; 173 174 struct mwl8k_ampdu_stream { 175 struct ieee80211_sta *sta; 176 u8 tid; 177 u8 state; 178 u8 idx; 179 }; 180 181 struct mwl8k_priv { 182 struct ieee80211_hw *hw; 183 struct pci_dev *pdev; 184 int irq; 185 186 struct mwl8k_device_info *device_info; 187 188 void __iomem *sram; 189 void __iomem *regs; 190 191 /* firmware */ 192 const struct firmware *fw_helper; 193 const struct firmware *fw_ucode; 194 195 /* hardware/firmware parameters */ 196 bool ap_fw; 197 struct rxd_ops *rxd_ops; 198 struct ieee80211_supported_band band_24; 199 struct ieee80211_channel channels_24[14]; 200 struct ieee80211_rate rates_24[13]; 201 struct ieee80211_supported_band band_50; 202 struct ieee80211_channel channels_50[4]; 203 struct ieee80211_rate rates_50[8]; 204 u32 ap_macids_supported; 205 u32 sta_macids_supported; 206 207 /* Ampdu stream information */ 208 u8 num_ampdu_queues; 209 spinlock_t stream_lock; 210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES]; 211 struct work_struct watchdog_ba_handle; 212 213 /* firmware access */ 214 struct mutex fw_mutex; 215 struct task_struct *fw_mutex_owner; 216 struct task_struct *hw_restart_owner; 217 int fw_mutex_depth; 218 struct completion *hostcmd_wait; 219 220 atomic_t watchdog_event_pending; 221 222 /* lock held over TX and TX reap */ 223 spinlock_t tx_lock; 224 225 /* TX quiesce completion, protected by fw_mutex and tx_lock */ 226 struct completion *tx_wait; 227 228 /* List of interfaces. */ 229 u32 macids_used; 230 struct list_head vif_list; 231 232 /* power management status cookie from firmware */ 233 u32 *cookie; 234 dma_addr_t cookie_dma; 235 236 u16 num_mcaddrs; 237 u8 hw_rev; 238 u32 fw_rev; 239 u32 caps; 240 241 /* 242 * Running count of TX packets in flight, to avoid 243 * iterating over the transmit rings each time. 244 */ 245 int pending_tx_pkts; 246 247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; 248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES]; 249 u32 txq_offset[MWL8K_MAX_TX_QUEUES]; 250 251 bool radio_on; 252 bool radio_short_preamble; 253 bool sniffer_enabled; 254 bool wmm_enabled; 255 256 /* XXX need to convert this to handle multiple interfaces */ 257 bool capture_beacon; 258 u8 capture_bssid[ETH_ALEN]; 259 struct sk_buff *beacon_skb; 260 261 /* 262 * This FJ worker has to be global as it is scheduled from the 263 * RX handler. At this point we don't know which interface it 264 * belongs to until the list of bssids waiting to complete join 265 * is checked. 266 */ 267 struct work_struct finalize_join_worker; 268 269 /* Tasklet to perform TX reclaim. */ 270 struct tasklet_struct poll_tx_task; 271 272 /* Tasklet to perform RX. */ 273 struct tasklet_struct poll_rx_task; 274 275 /* Most recently reported noise in dBm */ 276 s8 noise; 277 278 /* 279 * preserve the queue configurations so they can be restored if/when 280 * the firmware image is swapped. 281 */ 282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES]; 283 284 /* To perform the task of reloading the firmware */ 285 struct work_struct fw_reload; 286 bool hw_restart_in_progress; 287 288 /* async firmware loading state */ 289 unsigned fw_state; 290 char *fw_pref; 291 char *fw_alt; 292 bool is_8764; 293 struct completion firmware_loading_complete; 294 295 /* bitmap of running BSSes */ 296 u32 running_bsses; 297 298 /* ACS related */ 299 bool sw_scan_start; 300 struct ieee80211_channel *acs_chan; 301 unsigned long channel_time; 302 struct survey_info survey[MWL8K_NUM_CHANS]; 303 }; 304 305 #define MAX_WEP_KEY_LEN 13 306 #define NUM_WEP_KEYS 4 307 308 /* Per interface specific private data */ 309 struct mwl8k_vif { 310 struct list_head list; 311 struct ieee80211_vif *vif; 312 313 /* Firmware macid for this vif. */ 314 int macid; 315 316 /* Non AMPDU sequence number assigned by driver. */ 317 u16 seqno; 318 319 /* Saved WEP keys */ 320 struct { 321 u8 enabled; 322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN]; 323 } wep_key_conf[NUM_WEP_KEYS]; 324 325 /* BSSID */ 326 u8 bssid[ETH_ALEN]; 327 328 /* A flag to indicate is HW crypto is enabled for this bssid */ 329 bool is_hw_crypto_enabled; 330 }; 331 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) 332 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8)) 333 334 struct tx_traffic_info { 335 u32 start_time; 336 u32 pkts; 337 }; 338 339 #define MWL8K_MAX_TID 8 340 struct mwl8k_sta { 341 /* Index into station database. Returned by UPDATE_STADB. */ 342 u8 peer_id; 343 u8 is_ampdu_allowed; 344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID]; 345 }; 346 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv)) 347 348 static const struct ieee80211_channel mwl8k_channels_24[] = { 349 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, }, 350 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, }, 351 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, }, 352 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, }, 353 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, }, 354 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, }, 355 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, }, 356 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, }, 357 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, }, 358 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, }, 359 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, }, 360 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, }, 361 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, }, 362 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, }, 363 }; 364 365 static const struct ieee80211_rate mwl8k_rates_24[] = { 366 { .bitrate = 10, .hw_value = 2, }, 367 { .bitrate = 20, .hw_value = 4, }, 368 { .bitrate = 55, .hw_value = 11, }, 369 { .bitrate = 110, .hw_value = 22, }, 370 { .bitrate = 220, .hw_value = 44, }, 371 { .bitrate = 60, .hw_value = 12, }, 372 { .bitrate = 90, .hw_value = 18, }, 373 { .bitrate = 120, .hw_value = 24, }, 374 { .bitrate = 180, .hw_value = 36, }, 375 { .bitrate = 240, .hw_value = 48, }, 376 { .bitrate = 360, .hw_value = 72, }, 377 { .bitrate = 480, .hw_value = 96, }, 378 { .bitrate = 540, .hw_value = 108, }, 379 }; 380 381 static const struct ieee80211_channel mwl8k_channels_50[] = { 382 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, }, 383 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, }, 384 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, }, 385 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, }, 386 }; 387 388 static const struct ieee80211_rate mwl8k_rates_50[] = { 389 { .bitrate = 60, .hw_value = 12, }, 390 { .bitrate = 90, .hw_value = 18, }, 391 { .bitrate = 120, .hw_value = 24, }, 392 { .bitrate = 180, .hw_value = 36, }, 393 { .bitrate = 240, .hw_value = 48, }, 394 { .bitrate = 360, .hw_value = 72, }, 395 { .bitrate = 480, .hw_value = 96, }, 396 { .bitrate = 540, .hw_value = 108, }, 397 }; 398 399 /* Set or get info from Firmware */ 400 #define MWL8K_CMD_GET 0x0000 401 #define MWL8K_CMD_SET 0x0001 402 #define MWL8K_CMD_SET_LIST 0x0002 403 404 /* Firmware command codes */ 405 #define MWL8K_CMD_CODE_DNLD 0x0001 406 #define MWL8K_CMD_GET_HW_SPEC 0x0003 407 #define MWL8K_CMD_SET_HW_SPEC 0x0004 408 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 409 #define MWL8K_CMD_GET_STAT 0x0014 410 #define MWL8K_CMD_BBP_REG_ACCESS 0x001a 411 #define MWL8K_CMD_RADIO_CONTROL 0x001c 412 #define MWL8K_CMD_RF_TX_POWER 0x001e 413 #define MWL8K_CMD_TX_POWER 0x001f 414 #define MWL8K_CMD_RF_ANTENNA 0x0020 415 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */ 416 #define MWL8K_CMD_SET_PRE_SCAN 0x0107 417 #define MWL8K_CMD_SET_POST_SCAN 0x0108 418 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a 419 #define MWL8K_CMD_SET_AID 0x010d 420 #define MWL8K_CMD_SET_RATE 0x0110 421 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 422 #define MWL8K_CMD_RTS_THRESHOLD 0x0113 423 #define MWL8K_CMD_SET_SLOT 0x0114 424 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 425 #define MWL8K_CMD_SET_WMM_MODE 0x0123 426 #define MWL8K_CMD_MIMO_CONFIG 0x0125 427 #define MWL8K_CMD_USE_FIXED_RATE 0x0126 428 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 429 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */ 430 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 431 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205 432 #define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */ 433 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */ 434 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */ 435 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */ 436 #define MWL8K_CMD_UPDATE_STADB 0x1123 437 #define MWL8K_CMD_BASTREAM 0x1125 438 439 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) 440 { 441 u16 command = le16_to_cpu(cmd); 442 443 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ 444 snprintf(buf, bufsize, "%s", #x);\ 445 return buf;\ 446 } while (0) 447 switch (command & ~0x8000) { 448 MWL8K_CMDNAME(CODE_DNLD); 449 MWL8K_CMDNAME(GET_HW_SPEC); 450 MWL8K_CMDNAME(SET_HW_SPEC); 451 MWL8K_CMDNAME(MAC_MULTICAST_ADR); 452 MWL8K_CMDNAME(GET_STAT); 453 MWL8K_CMDNAME(RADIO_CONTROL); 454 MWL8K_CMDNAME(RF_TX_POWER); 455 MWL8K_CMDNAME(TX_POWER); 456 MWL8K_CMDNAME(RF_ANTENNA); 457 MWL8K_CMDNAME(SET_BEACON); 458 MWL8K_CMDNAME(SET_PRE_SCAN); 459 MWL8K_CMDNAME(SET_POST_SCAN); 460 MWL8K_CMDNAME(SET_RF_CHANNEL); 461 MWL8K_CMDNAME(SET_AID); 462 MWL8K_CMDNAME(SET_RATE); 463 MWL8K_CMDNAME(SET_FINALIZE_JOIN); 464 MWL8K_CMDNAME(RTS_THRESHOLD); 465 MWL8K_CMDNAME(SET_SLOT); 466 MWL8K_CMDNAME(SET_EDCA_PARAMS); 467 MWL8K_CMDNAME(SET_WMM_MODE); 468 MWL8K_CMDNAME(MIMO_CONFIG); 469 MWL8K_CMDNAME(USE_FIXED_RATE); 470 MWL8K_CMDNAME(ENABLE_SNIFFER); 471 MWL8K_CMDNAME(SET_MAC_ADDR); 472 MWL8K_CMDNAME(SET_RATEADAPT_MODE); 473 MWL8K_CMDNAME(BSS_START); 474 MWL8K_CMDNAME(SET_NEW_STN); 475 MWL8K_CMDNAME(UPDATE_ENCRYPTION); 476 MWL8K_CMDNAME(UPDATE_STADB); 477 MWL8K_CMDNAME(BASTREAM); 478 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP); 479 default: 480 snprintf(buf, bufsize, "0x%x", cmd); 481 } 482 #undef MWL8K_CMDNAME 483 484 return buf; 485 } 486 487 /* Hardware and firmware reset */ 488 static void mwl8k_hw_reset(struct mwl8k_priv *priv) 489 { 490 iowrite32(MWL8K_H2A_INT_RESET, 491 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 492 iowrite32(MWL8K_H2A_INT_RESET, 493 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 494 msleep(20); 495 } 496 497 /* Release fw image */ 498 static void mwl8k_release_fw(const struct firmware **fw) 499 { 500 if (*fw == NULL) 501 return; 502 release_firmware(*fw); 503 *fw = NULL; 504 } 505 506 static void mwl8k_release_firmware(struct mwl8k_priv *priv) 507 { 508 mwl8k_release_fw(&priv->fw_ucode); 509 mwl8k_release_fw(&priv->fw_helper); 510 } 511 512 /* states for asynchronous f/w loading */ 513 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context); 514 enum { 515 FW_STATE_INIT = 0, 516 FW_STATE_LOADING_PREF, 517 FW_STATE_LOADING_ALT, 518 FW_STATE_ERROR, 519 }; 520 521 /* Request fw image */ 522 static int mwl8k_request_fw(struct mwl8k_priv *priv, 523 const char *fname, const struct firmware **fw, 524 bool nowait) 525 { 526 /* release current image */ 527 if (*fw != NULL) 528 mwl8k_release_fw(fw); 529 530 if (nowait) 531 return request_firmware_nowait(THIS_MODULE, 1, fname, 532 &priv->pdev->dev, GFP_KERNEL, 533 priv, mwl8k_fw_state_machine); 534 else 535 return request_firmware(fw, fname, &priv->pdev->dev); 536 } 537 538 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, 539 bool nowait) 540 { 541 struct mwl8k_device_info *di = priv->device_info; 542 int rc; 543 544 if (di->helper_image != NULL) { 545 if (nowait) 546 rc = mwl8k_request_fw(priv, di->helper_image, 547 &priv->fw_helper, true); 548 else 549 rc = mwl8k_request_fw(priv, di->helper_image, 550 &priv->fw_helper, false); 551 if (rc) 552 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 553 pci_name(priv->pdev), di->helper_image); 554 555 if (rc || nowait) 556 return rc; 557 } 558 559 if (nowait) { 560 /* 561 * if we get here, no helper image is needed. Skip the 562 * FW_STATE_INIT state. 563 */ 564 priv->fw_state = FW_STATE_LOADING_PREF; 565 rc = mwl8k_request_fw(priv, fw_image, 566 &priv->fw_ucode, 567 true); 568 } else 569 rc = mwl8k_request_fw(priv, fw_image, 570 &priv->fw_ucode, false); 571 if (rc) { 572 printk(KERN_ERR "%s: Error requesting firmware file %s\n", 573 pci_name(priv->pdev), fw_image); 574 mwl8k_release_fw(&priv->fw_helper); 575 return rc; 576 } 577 578 return 0; 579 } 580 581 struct mwl8k_cmd_pkt { 582 __le16 code; 583 __le16 length; 584 __u8 seq_num; 585 __u8 macid; 586 __le16 result; 587 char payload[0]; 588 } __packed; 589 590 /* 591 * Firmware loading. 592 */ 593 static int 594 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) 595 { 596 void __iomem *regs = priv->regs; 597 dma_addr_t dma_addr; 598 int loops; 599 600 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); 601 if (pci_dma_mapping_error(priv->pdev, dma_addr)) 602 return -ENOMEM; 603 604 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 605 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 606 iowrite32(MWL8K_H2A_INT_DOORBELL, 607 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 608 iowrite32(MWL8K_H2A_INT_DUMMY, 609 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 610 611 loops = 1000; 612 do { 613 u32 int_code; 614 if (priv->is_8764) { 615 int_code = ioread32(regs + 616 MWL8K_HIU_H2A_INTERRUPT_STATUS); 617 if (int_code == 0) 618 break; 619 } else { 620 int_code = ioread32(regs + MWL8K_HIU_INT_CODE); 621 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { 622 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 623 break; 624 } 625 } 626 cond_resched(); 627 udelay(1); 628 } while (--loops); 629 630 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); 631 632 return loops ? 0 : -ETIMEDOUT; 633 } 634 635 static int mwl8k_load_fw_image(struct mwl8k_priv *priv, 636 const u8 *data, size_t length) 637 { 638 struct mwl8k_cmd_pkt *cmd; 639 int done; 640 int rc = 0; 641 642 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); 643 if (cmd == NULL) 644 return -ENOMEM; 645 646 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); 647 cmd->seq_num = 0; 648 cmd->macid = 0; 649 cmd->result = 0; 650 651 done = 0; 652 while (length) { 653 int block_size = length > 256 ? 256 : length; 654 655 memcpy(cmd->payload, data + done, block_size); 656 cmd->length = cpu_to_le16(block_size); 657 658 rc = mwl8k_send_fw_load_cmd(priv, cmd, 659 sizeof(*cmd) + block_size); 660 if (rc) 661 break; 662 663 done += block_size; 664 length -= block_size; 665 } 666 667 if (!rc) { 668 cmd->length = 0; 669 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); 670 } 671 672 kfree(cmd); 673 674 return rc; 675 } 676 677 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, 678 const u8 *data, size_t length) 679 { 680 unsigned char *buffer; 681 int may_continue, rc = 0; 682 u32 done, prev_block_size; 683 684 buffer = kmalloc(1024, GFP_KERNEL); 685 if (buffer == NULL) 686 return -ENOMEM; 687 688 done = 0; 689 prev_block_size = 0; 690 may_continue = 1000; 691 while (may_continue > 0) { 692 u32 block_size; 693 694 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); 695 if (block_size & 1) { 696 block_size &= ~1; 697 may_continue--; 698 } else { 699 done += prev_block_size; 700 length -= prev_block_size; 701 } 702 703 if (block_size > 1024 || block_size > length) { 704 rc = -EOVERFLOW; 705 break; 706 } 707 708 if (length == 0) { 709 rc = 0; 710 break; 711 } 712 713 if (block_size == 0) { 714 rc = -EPROTO; 715 may_continue--; 716 udelay(1); 717 continue; 718 } 719 720 prev_block_size = block_size; 721 memcpy(buffer, data + done, block_size); 722 723 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); 724 if (rc) 725 break; 726 } 727 728 if (!rc && length != 0) 729 rc = -EREMOTEIO; 730 731 kfree(buffer); 732 733 return rc; 734 } 735 736 static int mwl8k_load_firmware(struct ieee80211_hw *hw) 737 { 738 struct mwl8k_priv *priv = hw->priv; 739 const struct firmware *fw = priv->fw_ucode; 740 int rc; 741 int loops; 742 743 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { 744 const struct firmware *helper = priv->fw_helper; 745 746 if (helper == NULL) { 747 printk(KERN_ERR "%s: helper image needed but none " 748 "given\n", pci_name(priv->pdev)); 749 return -EINVAL; 750 } 751 752 rc = mwl8k_load_fw_image(priv, helper->data, helper->size); 753 if (rc) { 754 printk(KERN_ERR "%s: unable to load firmware " 755 "helper image\n", pci_name(priv->pdev)); 756 return rc; 757 } 758 msleep(20); 759 760 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 761 } else { 762 if (priv->is_8764) 763 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 764 else 765 rc = mwl8k_load_fw_image(priv, fw->data, fw->size); 766 } 767 768 if (rc) { 769 printk(KERN_ERR "%s: unable to load firmware image\n", 770 pci_name(priv->pdev)); 771 return rc; 772 } 773 774 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); 775 776 loops = 500000; 777 do { 778 u32 ready_code; 779 780 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); 781 if (ready_code == MWL8K_FWAP_READY) { 782 priv->ap_fw = true; 783 break; 784 } else if (ready_code == MWL8K_FWSTA_READY) { 785 priv->ap_fw = false; 786 break; 787 } 788 789 cond_resched(); 790 udelay(1); 791 } while (--loops); 792 793 return loops ? 0 : -ETIMEDOUT; 794 } 795 796 797 /* DMA header used by firmware and hardware. */ 798 struct mwl8k_dma_data { 799 __le16 fwlen; 800 struct ieee80211_hdr wh; 801 char data[0]; 802 } __packed; 803 804 /* Routines to add/remove DMA header from skb. */ 805 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) 806 { 807 struct mwl8k_dma_data *tr; 808 int hdrlen; 809 810 tr = (struct mwl8k_dma_data *)skb->data; 811 hdrlen = ieee80211_hdrlen(tr->wh.frame_control); 812 813 if (hdrlen != sizeof(tr->wh)) { 814 if (ieee80211_is_data_qos(tr->wh.frame_control)) { 815 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); 816 *((__le16 *)(tr->data - 2)) = qos; 817 } else { 818 memmove(tr->data - hdrlen, &tr->wh, hdrlen); 819 } 820 } 821 822 if (hdrlen != sizeof(*tr)) 823 skb_pull(skb, sizeof(*tr) - hdrlen); 824 } 825 826 #define REDUCED_TX_HEADROOM 8 827 828 static void 829 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, 830 int head_pad, int tail_pad) 831 { 832 struct ieee80211_hdr *wh; 833 int hdrlen; 834 int reqd_hdrlen; 835 struct mwl8k_dma_data *tr; 836 837 /* 838 * Add a firmware DMA header; the firmware requires that we 839 * present a 2-byte payload length followed by a 4-address 840 * header (without QoS field), followed (optionally) by any 841 * WEP/ExtIV header (but only filled in for CCMP). 842 */ 843 wh = (struct ieee80211_hdr *)skb->data; 844 845 hdrlen = ieee80211_hdrlen(wh->frame_control); 846 847 /* 848 * Check if skb_resize is required because of 849 * tx_headroom adjustment. 850 */ 851 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) 852 + REDUCED_TX_HEADROOM))) { 853 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { 854 855 wiphy_err(priv->hw->wiphy, 856 "Failed to reallocate TX buffer\n"); 857 return; 858 } 859 skb->truesize += REDUCED_TX_HEADROOM; 860 } 861 862 reqd_hdrlen = sizeof(*tr) + head_pad; 863 864 if (hdrlen != reqd_hdrlen) 865 skb_push(skb, reqd_hdrlen - hdrlen); 866 867 if (ieee80211_is_data_qos(wh->frame_control)) 868 hdrlen -= IEEE80211_QOS_CTL_LEN; 869 870 tr = (struct mwl8k_dma_data *)skb->data; 871 if (wh != &tr->wh) 872 memmove(&tr->wh, wh, hdrlen); 873 if (hdrlen != sizeof(tr->wh)) 874 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); 875 876 /* 877 * Firmware length is the length of the fully formed "802.11 878 * payload". That is, everything except for the 802.11 header. 879 * This includes all crypto material including the MIC. 880 */ 881 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); 882 } 883 884 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, 885 struct sk_buff *skb) 886 { 887 struct ieee80211_hdr *wh; 888 struct ieee80211_tx_info *tx_info; 889 struct ieee80211_key_conf *key_conf; 890 int data_pad; 891 int head_pad = 0; 892 893 wh = (struct ieee80211_hdr *)skb->data; 894 895 tx_info = IEEE80211_SKB_CB(skb); 896 897 key_conf = NULL; 898 if (ieee80211_is_data(wh->frame_control)) 899 key_conf = tx_info->control.hw_key; 900 901 /* 902 * Make sure the packet header is in the DMA header format (4-address 903 * without QoS), and add head & tail padding when HW crypto is enabled. 904 * 905 * We have the following trailer padding requirements: 906 * - WEP: 4 trailer bytes (ICV) 907 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) 908 * - CCMP: 8 trailer bytes (MIC) 909 */ 910 data_pad = 0; 911 if (key_conf != NULL) { 912 head_pad = key_conf->iv_len; 913 switch (key_conf->cipher) { 914 case WLAN_CIPHER_SUITE_WEP40: 915 case WLAN_CIPHER_SUITE_WEP104: 916 data_pad = 4; 917 break; 918 case WLAN_CIPHER_SUITE_TKIP: 919 data_pad = 12; 920 break; 921 case WLAN_CIPHER_SUITE_CCMP: 922 data_pad = 8; 923 break; 924 } 925 } 926 mwl8k_add_dma_header(priv, skb, head_pad, data_pad); 927 } 928 929 /* 930 * Packet reception for 88w8366/88w8764 AP firmware. 931 */ 932 struct mwl8k_rxd_ap { 933 __le16 pkt_len; 934 __u8 sq2; 935 __u8 rate; 936 __le32 pkt_phys_addr; 937 __le32 next_rxd_phys_addr; 938 __le16 qos_control; 939 __le16 htsig2; 940 __le32 hw_rssi_info; 941 __le32 hw_noise_floor_info; 942 __u8 noise_floor; 943 __u8 pad0[3]; 944 __u8 rssi; 945 __u8 rx_status; 946 __u8 channel; 947 __u8 rx_ctrl; 948 } __packed; 949 950 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 951 #define MWL8K_AP_RATE_INFO_40MHZ 0x40 952 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) 953 954 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 955 956 /* 8366/8764 AP rx_status bits */ 957 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 958 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF 959 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 960 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 961 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 962 963 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) 964 { 965 struct mwl8k_rxd_ap *rxd = _rxd; 966 967 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 968 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; 969 } 970 971 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) 972 { 973 struct mwl8k_rxd_ap *rxd = _rxd; 974 975 rxd->pkt_len = cpu_to_le16(len); 976 rxd->pkt_phys_addr = cpu_to_le32(addr); 977 wmb(); 978 rxd->rx_ctrl = 0; 979 } 980 981 static int 982 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, 983 __le16 *qos, s8 *noise) 984 { 985 struct mwl8k_rxd_ap *rxd = _rxd; 986 987 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) 988 return -1; 989 rmb(); 990 991 memset(status, 0, sizeof(*status)); 992 993 status->signal = -rxd->rssi; 994 *noise = -rxd->noise_floor; 995 996 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { 997 status->flag |= RX_FLAG_HT; 998 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) 999 status->flag |= RX_FLAG_40MHZ; 1000 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); 1001 } else { 1002 int i; 1003 1004 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { 1005 if (mwl8k_rates_24[i].hw_value == rxd->rate) { 1006 status->rate_idx = i; 1007 break; 1008 } 1009 } 1010 } 1011 1012 if (rxd->channel > 14) { 1013 status->band = NL80211_BAND_5GHZ; 1014 if (!(status->flag & RX_FLAG_HT)) 1015 status->rate_idx -= 5; 1016 } else { 1017 status->band = NL80211_BAND_2GHZ; 1018 } 1019 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1020 status->band); 1021 1022 *qos = rxd->qos_control; 1023 1024 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && 1025 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && 1026 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) 1027 status->flag |= RX_FLAG_MMIC_ERROR; 1028 1029 return le16_to_cpu(rxd->pkt_len); 1030 } 1031 1032 static struct rxd_ops rxd_ap_ops = { 1033 .rxd_size = sizeof(struct mwl8k_rxd_ap), 1034 .rxd_init = mwl8k_rxd_ap_init, 1035 .rxd_refill = mwl8k_rxd_ap_refill, 1036 .rxd_process = mwl8k_rxd_ap_process, 1037 }; 1038 1039 /* 1040 * Packet reception for STA firmware. 1041 */ 1042 struct mwl8k_rxd_sta { 1043 __le16 pkt_len; 1044 __u8 link_quality; 1045 __u8 noise_level; 1046 __le32 pkt_phys_addr; 1047 __le32 next_rxd_phys_addr; 1048 __le16 qos_control; 1049 __le16 rate_info; 1050 __le32 pad0[4]; 1051 __u8 rssi; 1052 __u8 channel; 1053 __le16 pad1; 1054 __u8 rx_ctrl; 1055 __u8 rx_status; 1056 __u8 pad2[2]; 1057 } __packed; 1058 1059 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 1060 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) 1061 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) 1062 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004 1063 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 1064 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 1065 1066 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 1067 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 1068 /* ICV=0 or MIC=1 */ 1069 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 1070 /* Key is uploaded only in failure case */ 1071 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 1072 1073 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) 1074 { 1075 struct mwl8k_rxd_sta *rxd = _rxd; 1076 1077 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 1078 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; 1079 } 1080 1081 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) 1082 { 1083 struct mwl8k_rxd_sta *rxd = _rxd; 1084 1085 rxd->pkt_len = cpu_to_le16(len); 1086 rxd->pkt_phys_addr = cpu_to_le32(addr); 1087 wmb(); 1088 rxd->rx_ctrl = 0; 1089 } 1090 1091 static int 1092 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, 1093 __le16 *qos, s8 *noise) 1094 { 1095 struct mwl8k_rxd_sta *rxd = _rxd; 1096 u16 rate_info; 1097 1098 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) 1099 return -1; 1100 rmb(); 1101 1102 rate_info = le16_to_cpu(rxd->rate_info); 1103 1104 memset(status, 0, sizeof(*status)); 1105 1106 status->signal = -rxd->rssi; 1107 *noise = -rxd->noise_level; 1108 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); 1109 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); 1110 1111 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) 1112 status->flag |= RX_FLAG_SHORTPRE; 1113 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) 1114 status->flag |= RX_FLAG_40MHZ; 1115 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) 1116 status->flag |= RX_FLAG_SHORT_GI; 1117 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) 1118 status->flag |= RX_FLAG_HT; 1119 1120 if (rxd->channel > 14) { 1121 status->band = NL80211_BAND_5GHZ; 1122 if (!(status->flag & RX_FLAG_HT)) 1123 status->rate_idx -= 5; 1124 } else { 1125 status->band = NL80211_BAND_2GHZ; 1126 } 1127 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1128 status->band); 1129 1130 *qos = rxd->qos_control; 1131 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && 1132 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) 1133 status->flag |= RX_FLAG_MMIC_ERROR; 1134 1135 return le16_to_cpu(rxd->pkt_len); 1136 } 1137 1138 static struct rxd_ops rxd_sta_ops = { 1139 .rxd_size = sizeof(struct mwl8k_rxd_sta), 1140 .rxd_init = mwl8k_rxd_sta_init, 1141 .rxd_refill = mwl8k_rxd_sta_refill, 1142 .rxd_process = mwl8k_rxd_sta_process, 1143 }; 1144 1145 1146 #define MWL8K_RX_DESCS 256 1147 #define MWL8K_RX_MAXSZ 3800 1148 1149 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) 1150 { 1151 struct mwl8k_priv *priv = hw->priv; 1152 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1153 int size; 1154 int i; 1155 1156 rxq->rxd_count = 0; 1157 rxq->head = 0; 1158 rxq->tail = 0; 1159 1160 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; 1161 1162 rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma); 1163 if (rxq->rxd == NULL) { 1164 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); 1165 return -ENOMEM; 1166 } 1167 1168 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); 1169 if (rxq->buf == NULL) { 1170 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma); 1171 return -ENOMEM; 1172 } 1173 1174 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1175 int desc_size; 1176 void *rxd; 1177 int nexti; 1178 dma_addr_t next_dma_addr; 1179 1180 desc_size = priv->rxd_ops->rxd_size; 1181 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); 1182 1183 nexti = i + 1; 1184 if (nexti == MWL8K_RX_DESCS) 1185 nexti = 0; 1186 next_dma_addr = rxq->rxd_dma + (nexti * desc_size); 1187 1188 priv->rxd_ops->rxd_init(rxd, next_dma_addr); 1189 } 1190 1191 return 0; 1192 } 1193 1194 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) 1195 { 1196 struct mwl8k_priv *priv = hw->priv; 1197 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1198 int refilled; 1199 1200 refilled = 0; 1201 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { 1202 struct sk_buff *skb; 1203 dma_addr_t addr; 1204 int rx; 1205 void *rxd; 1206 1207 skb = dev_alloc_skb(MWL8K_RX_MAXSZ); 1208 if (skb == NULL) 1209 break; 1210 1211 addr = pci_map_single(priv->pdev, skb->data, 1212 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1213 1214 rxq->rxd_count++; 1215 rx = rxq->tail++; 1216 if (rxq->tail == MWL8K_RX_DESCS) 1217 rxq->tail = 0; 1218 rxq->buf[rx].skb = skb; 1219 dma_unmap_addr_set(&rxq->buf[rx], dma, addr); 1220 1221 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); 1222 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); 1223 1224 refilled++; 1225 } 1226 1227 return refilled; 1228 } 1229 1230 /* Must be called only when the card's reception is completely halted */ 1231 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) 1232 { 1233 struct mwl8k_priv *priv = hw->priv; 1234 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1235 int i; 1236 1237 if (rxq->rxd == NULL) 1238 return; 1239 1240 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1241 if (rxq->buf[i].skb != NULL) { 1242 pci_unmap_single(priv->pdev, 1243 dma_unmap_addr(&rxq->buf[i], dma), 1244 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); 1245 dma_unmap_addr_set(&rxq->buf[i], dma, 0); 1246 1247 kfree_skb(rxq->buf[i].skb); 1248 rxq->buf[i].skb = NULL; 1249 } 1250 } 1251 1252 kfree(rxq->buf); 1253 rxq->buf = NULL; 1254 1255 pci_free_consistent(priv->pdev, 1256 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, 1257 rxq->rxd, rxq->rxd_dma); 1258 rxq->rxd = NULL; 1259 } 1260 1261 1262 /* 1263 * Scan a list of BSSIDs to process for finalize join. 1264 * Allows for extension to process multiple BSSIDs. 1265 */ 1266 static inline int 1267 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) 1268 { 1269 return priv->capture_beacon && 1270 ieee80211_is_beacon(wh->frame_control) && 1271 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); 1272 } 1273 1274 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, 1275 struct sk_buff *skb) 1276 { 1277 struct mwl8k_priv *priv = hw->priv; 1278 1279 priv->capture_beacon = false; 1280 eth_zero_addr(priv->capture_bssid); 1281 1282 /* 1283 * Use GFP_ATOMIC as rxq_process is called from 1284 * the primary interrupt handler, memory allocation call 1285 * must not sleep. 1286 */ 1287 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); 1288 if (priv->beacon_skb != NULL) 1289 ieee80211_queue_work(hw, &priv->finalize_join_worker); 1290 } 1291 1292 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, 1293 u8 *bssid) 1294 { 1295 struct mwl8k_vif *mwl8k_vif; 1296 1297 list_for_each_entry(mwl8k_vif, 1298 vif_list, list) { 1299 if (memcmp(bssid, mwl8k_vif->bssid, 1300 ETH_ALEN) == 0) 1301 return mwl8k_vif; 1302 } 1303 1304 return NULL; 1305 } 1306 1307 static int rxq_process(struct ieee80211_hw *hw, int index, int limit) 1308 { 1309 struct mwl8k_priv *priv = hw->priv; 1310 struct mwl8k_vif *mwl8k_vif = NULL; 1311 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1312 int processed; 1313 1314 processed = 0; 1315 while (rxq->rxd_count && limit--) { 1316 struct sk_buff *skb; 1317 void *rxd; 1318 int pkt_len; 1319 struct ieee80211_rx_status status; 1320 struct ieee80211_hdr *wh; 1321 __le16 qos; 1322 1323 skb = rxq->buf[rxq->head].skb; 1324 if (skb == NULL) 1325 break; 1326 1327 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); 1328 1329 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, 1330 &priv->noise); 1331 if (pkt_len < 0) 1332 break; 1333 1334 rxq->buf[rxq->head].skb = NULL; 1335 1336 pci_unmap_single(priv->pdev, 1337 dma_unmap_addr(&rxq->buf[rxq->head], dma), 1338 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); 1339 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); 1340 1341 rxq->head++; 1342 if (rxq->head == MWL8K_RX_DESCS) 1343 rxq->head = 0; 1344 1345 rxq->rxd_count--; 1346 1347 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1348 1349 /* 1350 * Check for a pending join operation. Save a 1351 * copy of the beacon and schedule a tasklet to 1352 * send a FINALIZE_JOIN command to the firmware. 1353 */ 1354 if (mwl8k_capture_bssid(priv, (void *)skb->data)) 1355 mwl8k_save_beacon(hw, skb); 1356 1357 if (ieee80211_has_protected(wh->frame_control)) { 1358 1359 /* Check if hw crypto has been enabled for 1360 * this bss. If yes, set the status flags 1361 * accordingly 1362 */ 1363 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, 1364 wh->addr1); 1365 1366 if (mwl8k_vif != NULL && 1367 mwl8k_vif->is_hw_crypto_enabled) { 1368 /* 1369 * When MMIC ERROR is encountered 1370 * by the firmware, payload is 1371 * dropped and only 32 bytes of 1372 * mwl8k Firmware header is sent 1373 * to the host. 1374 * 1375 * We need to add four bytes of 1376 * key information. In it 1377 * MAC80211 expects keyidx set to 1378 * 0 for triggering Counter 1379 * Measure of MMIC failure. 1380 */ 1381 if (status.flag & RX_FLAG_MMIC_ERROR) { 1382 struct mwl8k_dma_data *tr; 1383 tr = (struct mwl8k_dma_data *)skb->data; 1384 memset((void *)&(tr->data), 0, 4); 1385 pkt_len += 4; 1386 } 1387 1388 if (!ieee80211_is_auth(wh->frame_control)) 1389 status.flag |= RX_FLAG_IV_STRIPPED | 1390 RX_FLAG_DECRYPTED | 1391 RX_FLAG_MMIC_STRIPPED; 1392 } 1393 } 1394 1395 skb_put(skb, pkt_len); 1396 mwl8k_remove_dma_header(skb, qos); 1397 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 1398 ieee80211_rx_irqsafe(hw, skb); 1399 1400 processed++; 1401 } 1402 1403 return processed; 1404 } 1405 1406 1407 /* 1408 * Packet transmission. 1409 */ 1410 1411 #define MWL8K_TXD_STATUS_OK 0x00000001 1412 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 1413 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 1414 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 1415 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 1416 1417 #define MWL8K_QOS_QLEN_UNSPEC 0xff00 1418 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060 1419 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 1420 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 1421 #define MWL8K_QOS_EOSP 0x0010 1422 1423 struct mwl8k_tx_desc { 1424 __le32 status; 1425 __u8 data_rate; 1426 __u8 tx_priority; 1427 __le16 qos_control; 1428 __le32 pkt_phys_addr; 1429 __le16 pkt_len; 1430 __u8 dest_MAC_addr[ETH_ALEN]; 1431 __le32 next_txd_phys_addr; 1432 __le32 timestamp; 1433 __le16 rate_info; 1434 __u8 peer_id; 1435 __u8 tx_frag_cnt; 1436 } __packed; 1437 1438 #define MWL8K_TX_DESCS 128 1439 1440 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) 1441 { 1442 struct mwl8k_priv *priv = hw->priv; 1443 struct mwl8k_tx_queue *txq = priv->txq + index; 1444 int size; 1445 int i; 1446 1447 txq->len = 0; 1448 txq->head = 0; 1449 txq->tail = 0; 1450 1451 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); 1452 1453 txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma); 1454 if (txq->txd == NULL) { 1455 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); 1456 return -ENOMEM; 1457 } 1458 1459 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); 1460 if (txq->skb == NULL) { 1461 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma); 1462 return -ENOMEM; 1463 } 1464 1465 for (i = 0; i < MWL8K_TX_DESCS; i++) { 1466 struct mwl8k_tx_desc *tx_desc; 1467 int nexti; 1468 1469 tx_desc = txq->txd + i; 1470 nexti = (i + 1) % MWL8K_TX_DESCS; 1471 1472 tx_desc->status = 0; 1473 tx_desc->next_txd_phys_addr = 1474 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); 1475 } 1476 1477 return 0; 1478 } 1479 1480 static inline void mwl8k_tx_start(struct mwl8k_priv *priv) 1481 { 1482 iowrite32(MWL8K_H2A_INT_PPA_READY, 1483 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1484 iowrite32(MWL8K_H2A_INT_DUMMY, 1485 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1486 ioread32(priv->regs + MWL8K_HIU_INT_CODE); 1487 } 1488 1489 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) 1490 { 1491 struct mwl8k_priv *priv = hw->priv; 1492 int i; 1493 1494 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 1495 struct mwl8k_tx_queue *txq = priv->txq + i; 1496 int fw_owned = 0; 1497 int drv_owned = 0; 1498 int unused = 0; 1499 int desc; 1500 1501 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { 1502 struct mwl8k_tx_desc *tx_desc = txq->txd + desc; 1503 u32 status; 1504 1505 status = le32_to_cpu(tx_desc->status); 1506 if (status & MWL8K_TXD_STATUS_FW_OWNED) 1507 fw_owned++; 1508 else 1509 drv_owned++; 1510 1511 if (tx_desc->pkt_len == 0) 1512 unused++; 1513 } 1514 1515 wiphy_err(hw->wiphy, 1516 "txq[%d] len=%d head=%d tail=%d " 1517 "fw_owned=%d drv_owned=%d unused=%d\n", 1518 i, 1519 txq->len, txq->head, txq->tail, 1520 fw_owned, drv_owned, unused); 1521 } 1522 } 1523 1524 /* 1525 * Must be called with priv->fw_mutex held and tx queues stopped. 1526 */ 1527 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000 1528 1529 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) 1530 { 1531 struct mwl8k_priv *priv = hw->priv; 1532 DECLARE_COMPLETION_ONSTACK(tx_wait); 1533 int retry; 1534 int rc; 1535 1536 might_sleep(); 1537 1538 /* Since fw restart is in progress, allow only the firmware 1539 * commands from the restart code and block the other 1540 * commands since they are going to fail in any case since 1541 * the firmware has crashed 1542 */ 1543 if (priv->hw_restart_in_progress) { 1544 if (priv->hw_restart_owner == current) 1545 return 0; 1546 else 1547 return -EBUSY; 1548 } 1549 1550 if (atomic_read(&priv->watchdog_event_pending)) 1551 return 0; 1552 1553 /* 1554 * The TX queues are stopped at this point, so this test 1555 * doesn't need to take ->tx_lock. 1556 */ 1557 if (!priv->pending_tx_pkts) 1558 return 0; 1559 1560 retry = 1; 1561 rc = 0; 1562 1563 spin_lock_bh(&priv->tx_lock); 1564 priv->tx_wait = &tx_wait; 1565 while (!rc) { 1566 int oldcount; 1567 unsigned long timeout; 1568 1569 oldcount = priv->pending_tx_pkts; 1570 1571 spin_unlock_bh(&priv->tx_lock); 1572 timeout = wait_for_completion_timeout(&tx_wait, 1573 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); 1574 1575 if (atomic_read(&priv->watchdog_event_pending)) { 1576 spin_lock_bh(&priv->tx_lock); 1577 priv->tx_wait = NULL; 1578 spin_unlock_bh(&priv->tx_lock); 1579 return 0; 1580 } 1581 1582 spin_lock_bh(&priv->tx_lock); 1583 1584 if (timeout || !priv->pending_tx_pkts) { 1585 WARN_ON(priv->pending_tx_pkts); 1586 if (retry) 1587 wiphy_notice(hw->wiphy, "tx rings drained\n"); 1588 break; 1589 } 1590 1591 if (retry) { 1592 mwl8k_tx_start(priv); 1593 retry = 0; 1594 continue; 1595 } 1596 1597 if (priv->pending_tx_pkts < oldcount) { 1598 wiphy_notice(hw->wiphy, 1599 "waiting for tx rings to drain (%d -> %d pkts)\n", 1600 oldcount, priv->pending_tx_pkts); 1601 retry = 1; 1602 continue; 1603 } 1604 1605 priv->tx_wait = NULL; 1606 1607 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", 1608 MWL8K_TX_WAIT_TIMEOUT_MS); 1609 mwl8k_dump_tx_rings(hw); 1610 priv->hw_restart_in_progress = true; 1611 ieee80211_queue_work(hw, &priv->fw_reload); 1612 1613 rc = -ETIMEDOUT; 1614 } 1615 priv->tx_wait = NULL; 1616 spin_unlock_bh(&priv->tx_lock); 1617 1618 return rc; 1619 } 1620 1621 #define MWL8K_TXD_SUCCESS(status) \ 1622 ((status) & (MWL8K_TXD_STATUS_OK | \ 1623 MWL8K_TXD_STATUS_OK_RETRY | \ 1624 MWL8K_TXD_STATUS_OK_MORE_RETRY)) 1625 1626 static int mwl8k_tid_queue_mapping(u8 tid) 1627 { 1628 BUG_ON(tid > 7); 1629 1630 switch (tid) { 1631 case 0: 1632 case 3: 1633 return IEEE80211_AC_BE; 1634 case 1: 1635 case 2: 1636 return IEEE80211_AC_BK; 1637 case 4: 1638 case 5: 1639 return IEEE80211_AC_VI; 1640 case 6: 1641 case 7: 1642 return IEEE80211_AC_VO; 1643 default: 1644 return -1; 1645 } 1646 } 1647 1648 /* The firmware will fill in the rate information 1649 * for each packet that gets queued in the hardware 1650 * and these macros will interpret that info. 1651 */ 1652 1653 #define RI_FORMAT(a) (a & 0x0001) 1654 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) 1655 1656 static int 1657 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) 1658 { 1659 struct mwl8k_priv *priv = hw->priv; 1660 struct mwl8k_tx_queue *txq = priv->txq + index; 1661 int processed; 1662 1663 processed = 0; 1664 while (txq->len > 0 && limit--) { 1665 int tx; 1666 struct mwl8k_tx_desc *tx_desc; 1667 unsigned long addr; 1668 int size; 1669 struct sk_buff *skb; 1670 struct ieee80211_tx_info *info; 1671 u32 status; 1672 struct ieee80211_sta *sta; 1673 struct mwl8k_sta *sta_info = NULL; 1674 u16 rate_info; 1675 struct ieee80211_hdr *wh; 1676 1677 tx = txq->head; 1678 tx_desc = txq->txd + tx; 1679 1680 status = le32_to_cpu(tx_desc->status); 1681 1682 if (status & MWL8K_TXD_STATUS_FW_OWNED) { 1683 if (!force) 1684 break; 1685 tx_desc->status &= 1686 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); 1687 } 1688 1689 txq->head = (tx + 1) % MWL8K_TX_DESCS; 1690 BUG_ON(txq->len == 0); 1691 txq->len--; 1692 priv->pending_tx_pkts--; 1693 1694 addr = le32_to_cpu(tx_desc->pkt_phys_addr); 1695 size = le16_to_cpu(tx_desc->pkt_len); 1696 skb = txq->skb[tx]; 1697 txq->skb[tx] = NULL; 1698 1699 BUG_ON(skb == NULL); 1700 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); 1701 1702 mwl8k_remove_dma_header(skb, tx_desc->qos_control); 1703 1704 wh = (struct ieee80211_hdr *) skb->data; 1705 1706 /* Mark descriptor as unused */ 1707 tx_desc->pkt_phys_addr = 0; 1708 tx_desc->pkt_len = 0; 1709 1710 info = IEEE80211_SKB_CB(skb); 1711 if (ieee80211_is_data(wh->frame_control)) { 1712 rcu_read_lock(); 1713 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, 1714 wh->addr2); 1715 if (sta) { 1716 sta_info = MWL8K_STA(sta); 1717 BUG_ON(sta_info == NULL); 1718 rate_info = le16_to_cpu(tx_desc->rate_info); 1719 /* If rate is < 6.5 Mpbs for an ht station 1720 * do not form an ampdu. If the station is a 1721 * legacy station (format = 0), do not form an 1722 * ampdu 1723 */ 1724 if (RI_RATE_ID_MCS(rate_info) < 1 || 1725 RI_FORMAT(rate_info) == 0) { 1726 sta_info->is_ampdu_allowed = false; 1727 } else { 1728 sta_info->is_ampdu_allowed = true; 1729 } 1730 } 1731 rcu_read_unlock(); 1732 } 1733 1734 ieee80211_tx_info_clear_status(info); 1735 1736 /* Rate control is happening in the firmware. 1737 * Ensure no tx rate is being reported. 1738 */ 1739 info->status.rates[0].idx = -1; 1740 info->status.rates[0].count = 1; 1741 1742 if (MWL8K_TXD_SUCCESS(status)) 1743 info->flags |= IEEE80211_TX_STAT_ACK; 1744 1745 ieee80211_tx_status_irqsafe(hw, skb); 1746 1747 processed++; 1748 } 1749 1750 return processed; 1751 } 1752 1753 /* must be called only when the card's transmit is completely halted */ 1754 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) 1755 { 1756 struct mwl8k_priv *priv = hw->priv; 1757 struct mwl8k_tx_queue *txq = priv->txq + index; 1758 1759 if (txq->txd == NULL) 1760 return; 1761 1762 mwl8k_txq_reclaim(hw, index, INT_MAX, 1); 1763 1764 kfree(txq->skb); 1765 txq->skb = NULL; 1766 1767 pci_free_consistent(priv->pdev, 1768 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), 1769 txq->txd, txq->txd_dma); 1770 txq->txd = NULL; 1771 } 1772 1773 /* caller must hold priv->stream_lock when calling the stream functions */ 1774 static struct mwl8k_ampdu_stream * 1775 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) 1776 { 1777 struct mwl8k_ampdu_stream *stream; 1778 struct mwl8k_priv *priv = hw->priv; 1779 int i; 1780 1781 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1782 stream = &priv->ampdu[i]; 1783 if (stream->state == AMPDU_NO_STREAM) { 1784 stream->sta = sta; 1785 stream->state = AMPDU_STREAM_NEW; 1786 stream->tid = tid; 1787 stream->idx = i; 1788 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", 1789 sta->addr, tid); 1790 return stream; 1791 } 1792 } 1793 return NULL; 1794 } 1795 1796 static int 1797 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1798 { 1799 int ret; 1800 1801 /* if the stream has already been started, don't start it again */ 1802 if (stream->state != AMPDU_STREAM_NEW) 1803 return 0; 1804 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); 1805 if (ret) 1806 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " 1807 "%d\n", stream->sta->addr, stream->tid, ret); 1808 else 1809 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", 1810 stream->sta->addr, stream->tid); 1811 return ret; 1812 } 1813 1814 static void 1815 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1816 { 1817 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, 1818 stream->tid); 1819 memset(stream, 0, sizeof(*stream)); 1820 } 1821 1822 static struct mwl8k_ampdu_stream * 1823 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) 1824 { 1825 struct mwl8k_priv *priv = hw->priv; 1826 int i; 1827 1828 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1829 struct mwl8k_ampdu_stream *stream; 1830 stream = &priv->ampdu[i]; 1831 if (stream->state == AMPDU_NO_STREAM) 1832 continue; 1833 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && 1834 stream->tid == tid) 1835 return stream; 1836 } 1837 return NULL; 1838 } 1839 1840 #define MWL8K_AMPDU_PACKET_THRESHOLD 64 1841 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) 1842 { 1843 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1844 struct tx_traffic_info *tx_stats; 1845 1846 BUG_ON(tid >= MWL8K_MAX_TID); 1847 tx_stats = &sta_info->tx_stats[tid]; 1848 1849 return sta_info->is_ampdu_allowed && 1850 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; 1851 } 1852 1853 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) 1854 { 1855 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1856 struct tx_traffic_info *tx_stats; 1857 1858 BUG_ON(tid >= MWL8K_MAX_TID); 1859 tx_stats = &sta_info->tx_stats[tid]; 1860 1861 if (tx_stats->start_time == 0) 1862 tx_stats->start_time = jiffies; 1863 1864 /* reset the packet count after each second elapses. If the number of 1865 * packets ever exceeds the ampdu_min_traffic threshold, we will allow 1866 * an ampdu stream to be started. 1867 */ 1868 if (jiffies - tx_stats->start_time > HZ) { 1869 tx_stats->pkts = 0; 1870 tx_stats->start_time = 0; 1871 } else 1872 tx_stats->pkts++; 1873 } 1874 1875 /* The hardware ampdu queues start from 5. 1876 * txpriorities for ampdu queues are 1877 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest 1878 * and queue 3 is lowest (queue 4 is reserved) 1879 */ 1880 #define BA_QUEUE 5 1881 1882 static void 1883 mwl8k_txq_xmit(struct ieee80211_hw *hw, 1884 int index, 1885 struct ieee80211_sta *sta, 1886 struct sk_buff *skb) 1887 { 1888 struct mwl8k_priv *priv = hw->priv; 1889 struct ieee80211_tx_info *tx_info; 1890 struct mwl8k_vif *mwl8k_vif; 1891 struct ieee80211_hdr *wh; 1892 struct mwl8k_tx_queue *txq; 1893 struct mwl8k_tx_desc *tx; 1894 dma_addr_t dma; 1895 u32 txstatus; 1896 u8 txdatarate; 1897 u16 qos; 1898 int txpriority; 1899 u8 tid = 0; 1900 struct mwl8k_ampdu_stream *stream = NULL; 1901 bool start_ba_session = false; 1902 bool mgmtframe = false; 1903 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1904 bool eapol_frame = false; 1905 1906 wh = (struct ieee80211_hdr *)skb->data; 1907 if (ieee80211_is_data_qos(wh->frame_control)) 1908 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); 1909 else 1910 qos = 0; 1911 1912 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 1913 eapol_frame = true; 1914 1915 if (ieee80211_is_mgmt(wh->frame_control)) 1916 mgmtframe = true; 1917 1918 if (priv->ap_fw) 1919 mwl8k_encapsulate_tx_frame(priv, skb); 1920 else 1921 mwl8k_add_dma_header(priv, skb, 0, 0); 1922 1923 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1924 1925 tx_info = IEEE80211_SKB_CB(skb); 1926 mwl8k_vif = MWL8K_VIF(tx_info->control.vif); 1927 1928 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1929 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1930 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); 1931 mwl8k_vif->seqno += 0x10; 1932 } 1933 1934 /* Setup firmware control bit fields for each frame type. */ 1935 txstatus = 0; 1936 txdatarate = 0; 1937 if (ieee80211_is_mgmt(wh->frame_control) || 1938 ieee80211_is_ctl(wh->frame_control)) { 1939 txdatarate = 0; 1940 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; 1941 } else if (ieee80211_is_data(wh->frame_control)) { 1942 txdatarate = 1; 1943 if (is_multicast_ether_addr(wh->addr1)) 1944 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; 1945 1946 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 1947 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) 1948 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; 1949 else 1950 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 1951 } 1952 1953 /* Queue ADDBA request in the respective data queue. While setting up 1954 * the ampdu stream, mac80211 queues further packets for that 1955 * particular ra/tid pair. However, packets piled up in the hardware 1956 * for that ra/tid pair will still go out. ADDBA request and the 1957 * related data packets going out from different queues asynchronously 1958 * will cause a shift in the receiver window which might result in 1959 * ampdu packets getting dropped at the receiver after the stream has 1960 * been setup. 1961 */ 1962 if (unlikely(ieee80211_is_action(wh->frame_control) && 1963 mgmt->u.action.category == WLAN_CATEGORY_BACK && 1964 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && 1965 priv->ap_fw)) { 1966 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); 1967 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; 1968 index = mwl8k_tid_queue_mapping(tid); 1969 } 1970 1971 txpriority = index; 1972 1973 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame && 1974 ieee80211_is_data_qos(wh->frame_control)) { 1975 tid = qos & 0xf; 1976 mwl8k_tx_count_packet(sta, tid); 1977 spin_lock(&priv->stream_lock); 1978 stream = mwl8k_lookup_stream(hw, sta->addr, tid); 1979 if (stream != NULL) { 1980 if (stream->state == AMPDU_STREAM_ACTIVE) { 1981 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); 1982 txpriority = (BA_QUEUE + stream->idx) % 1983 TOTAL_HW_TX_QUEUES; 1984 if (stream->idx <= 1) 1985 index = stream->idx + 1986 MWL8K_TX_WMM_QUEUES; 1987 1988 } else if (stream->state == AMPDU_STREAM_NEW) { 1989 /* We get here if the driver sends us packets 1990 * after we've initiated a stream, but before 1991 * our ampdu_action routine has been called 1992 * with IEEE80211_AMPDU_TX_START to get the SSN 1993 * for the ADDBA request. So this packet can 1994 * go out with no risk of sequence number 1995 * mismatch. No special handling is required. 1996 */ 1997 } else { 1998 /* Drop packets that would go out after the 1999 * ADDBA request was sent but before the ADDBA 2000 * response is received. If we don't do this, 2001 * the recipient would probably receive it 2002 * after the ADDBA request with SSN 0. This 2003 * will cause the recipient's BA receive window 2004 * to shift, which would cause the subsequent 2005 * packets in the BA stream to be discarded. 2006 * mac80211 queues our packets for us in this 2007 * case, so this is really just a safety check. 2008 */ 2009 wiphy_warn(hw->wiphy, 2010 "Cannot send packet while ADDBA " 2011 "dialog is underway.\n"); 2012 spin_unlock(&priv->stream_lock); 2013 dev_kfree_skb(skb); 2014 return; 2015 } 2016 } else { 2017 /* Defer calling mwl8k_start_stream so that the current 2018 * skb can go out before the ADDBA request. This 2019 * prevents sequence number mismatch at the recepient 2020 * as described above. 2021 */ 2022 if (mwl8k_ampdu_allowed(sta, tid)) { 2023 stream = mwl8k_add_stream(hw, sta, tid); 2024 if (stream != NULL) 2025 start_ba_session = true; 2026 } 2027 } 2028 spin_unlock(&priv->stream_lock); 2029 } else { 2030 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 2031 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 2032 } 2033 2034 dma = pci_map_single(priv->pdev, skb->data, 2035 skb->len, PCI_DMA_TODEVICE); 2036 2037 if (pci_dma_mapping_error(priv->pdev, dma)) { 2038 wiphy_debug(hw->wiphy, 2039 "failed to dma map skb, dropping TX frame.\n"); 2040 if (start_ba_session) { 2041 spin_lock(&priv->stream_lock); 2042 mwl8k_remove_stream(hw, stream); 2043 spin_unlock(&priv->stream_lock); 2044 } 2045 dev_kfree_skb(skb); 2046 return; 2047 } 2048 2049 spin_lock_bh(&priv->tx_lock); 2050 2051 txq = priv->txq + index; 2052 2053 /* Mgmt frames that go out frequently are probe 2054 * responses. Other mgmt frames got out relatively 2055 * infrequently. Hence reserve 2 buffers so that 2056 * other mgmt frames do not get dropped due to an 2057 * already queued probe response in one of the 2058 * reserved buffers. 2059 */ 2060 2061 if (txq->len >= MWL8K_TX_DESCS - 2) { 2062 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { 2063 if (start_ba_session) { 2064 spin_lock(&priv->stream_lock); 2065 mwl8k_remove_stream(hw, stream); 2066 spin_unlock(&priv->stream_lock); 2067 } 2068 mwl8k_tx_start(priv); 2069 spin_unlock_bh(&priv->tx_lock); 2070 pci_unmap_single(priv->pdev, dma, skb->len, 2071 PCI_DMA_TODEVICE); 2072 dev_kfree_skb(skb); 2073 return; 2074 } 2075 } 2076 2077 BUG_ON(txq->skb[txq->tail] != NULL); 2078 txq->skb[txq->tail] = skb; 2079 2080 tx = txq->txd + txq->tail; 2081 tx->data_rate = txdatarate; 2082 tx->tx_priority = txpriority; 2083 tx->qos_control = cpu_to_le16(qos); 2084 tx->pkt_phys_addr = cpu_to_le32(dma); 2085 tx->pkt_len = cpu_to_le16(skb->len); 2086 tx->rate_info = 0; 2087 if (!priv->ap_fw && sta != NULL) 2088 tx->peer_id = MWL8K_STA(sta)->peer_id; 2089 else 2090 tx->peer_id = 0; 2091 2092 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) 2093 tx->timestamp = cpu_to_le32(ioread32(priv->regs + 2094 MWL8K_HW_TIMER_REGISTER)); 2095 else 2096 tx->timestamp = 0; 2097 2098 wmb(); 2099 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); 2100 2101 txq->len++; 2102 priv->pending_tx_pkts++; 2103 2104 txq->tail++; 2105 if (txq->tail == MWL8K_TX_DESCS) 2106 txq->tail = 0; 2107 2108 mwl8k_tx_start(priv); 2109 2110 spin_unlock_bh(&priv->tx_lock); 2111 2112 /* Initiate the ampdu session here */ 2113 if (start_ba_session) { 2114 spin_lock(&priv->stream_lock); 2115 if (mwl8k_start_stream(hw, stream)) 2116 mwl8k_remove_stream(hw, stream); 2117 spin_unlock(&priv->stream_lock); 2118 } 2119 } 2120 2121 2122 /* 2123 * Firmware access. 2124 * 2125 * We have the following requirements for issuing firmware commands: 2126 * - Some commands require that the packet transmit path is idle when 2127 * the command is issued. (For simplicity, we'll just quiesce the 2128 * transmit path for every command.) 2129 * - There are certain sequences of commands that need to be issued to 2130 * the hardware sequentially, with no other intervening commands. 2131 * 2132 * This leads to an implementation of a "firmware lock" as a mutex that 2133 * can be taken recursively, and which is taken by both the low-level 2134 * command submission function (mwl8k_post_cmd) as well as any users of 2135 * that function that require issuing of an atomic sequence of commands, 2136 * and quiesces the transmit path whenever it's taken. 2137 */ 2138 static int mwl8k_fw_lock(struct ieee80211_hw *hw) 2139 { 2140 struct mwl8k_priv *priv = hw->priv; 2141 2142 if (priv->fw_mutex_owner != current) { 2143 int rc; 2144 2145 mutex_lock(&priv->fw_mutex); 2146 ieee80211_stop_queues(hw); 2147 2148 rc = mwl8k_tx_wait_empty(hw); 2149 if (rc) { 2150 if (!priv->hw_restart_in_progress) 2151 ieee80211_wake_queues(hw); 2152 2153 mutex_unlock(&priv->fw_mutex); 2154 2155 return rc; 2156 } 2157 2158 priv->fw_mutex_owner = current; 2159 } 2160 2161 priv->fw_mutex_depth++; 2162 2163 return 0; 2164 } 2165 2166 static void mwl8k_fw_unlock(struct ieee80211_hw *hw) 2167 { 2168 struct mwl8k_priv *priv = hw->priv; 2169 2170 if (!--priv->fw_mutex_depth) { 2171 if (!priv->hw_restart_in_progress) 2172 ieee80211_wake_queues(hw); 2173 2174 priv->fw_mutex_owner = NULL; 2175 mutex_unlock(&priv->fw_mutex); 2176 } 2177 } 2178 2179 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, 2180 u32 bitmap); 2181 2182 /* 2183 * Command processing. 2184 */ 2185 2186 /* Timeout firmware commands after 10s */ 2187 #define MWL8K_CMD_TIMEOUT_MS 10000 2188 2189 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) 2190 { 2191 DECLARE_COMPLETION_ONSTACK(cmd_wait); 2192 struct mwl8k_priv *priv = hw->priv; 2193 void __iomem *regs = priv->regs; 2194 dma_addr_t dma_addr; 2195 unsigned int dma_size; 2196 int rc; 2197 unsigned long timeout = 0; 2198 u8 buf[32]; 2199 u32 bitmap = 0; 2200 2201 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", 2202 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); 2203 2204 /* Before posting firmware commands that could change the hardware 2205 * characteristics, make sure that all BSSes are stopped temporary. 2206 * Enable these stopped BSSes after completion of the commands 2207 */ 2208 2209 rc = mwl8k_fw_lock(hw); 2210 if (rc) 2211 return rc; 2212 2213 if (priv->ap_fw && priv->running_bsses) { 2214 switch (le16_to_cpu(cmd->code)) { 2215 case MWL8K_CMD_SET_RF_CHANNEL: 2216 case MWL8K_CMD_RADIO_CONTROL: 2217 case MWL8K_CMD_RF_TX_POWER: 2218 case MWL8K_CMD_TX_POWER: 2219 case MWL8K_CMD_RF_ANTENNA: 2220 case MWL8K_CMD_RTS_THRESHOLD: 2221 case MWL8K_CMD_MIMO_CONFIG: 2222 bitmap = priv->running_bsses; 2223 mwl8k_enable_bsses(hw, false, bitmap); 2224 break; 2225 } 2226 } 2227 2228 cmd->result = (__force __le16) 0xffff; 2229 dma_size = le16_to_cpu(cmd->length); 2230 dma_addr = pci_map_single(priv->pdev, cmd, dma_size, 2231 PCI_DMA_BIDIRECTIONAL); 2232 if (pci_dma_mapping_error(priv->pdev, dma_addr)) 2233 return -ENOMEM; 2234 2235 priv->hostcmd_wait = &cmd_wait; 2236 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 2237 iowrite32(MWL8K_H2A_INT_DOORBELL, 2238 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2239 iowrite32(MWL8K_H2A_INT_DUMMY, 2240 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2241 2242 timeout = wait_for_completion_timeout(&cmd_wait, 2243 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); 2244 2245 priv->hostcmd_wait = NULL; 2246 2247 2248 pci_unmap_single(priv->pdev, dma_addr, dma_size, 2249 PCI_DMA_BIDIRECTIONAL); 2250 2251 if (!timeout) { 2252 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", 2253 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2254 MWL8K_CMD_TIMEOUT_MS); 2255 rc = -ETIMEDOUT; 2256 } else { 2257 int ms; 2258 2259 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); 2260 2261 rc = cmd->result ? -EINVAL : 0; 2262 if (rc) 2263 wiphy_err(hw->wiphy, "Command %s error 0x%x\n", 2264 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2265 le16_to_cpu(cmd->result)); 2266 else if (ms > 2000) 2267 wiphy_notice(hw->wiphy, "Command %s took %d ms\n", 2268 mwl8k_cmd_name(cmd->code, 2269 buf, sizeof(buf)), 2270 ms); 2271 } 2272 2273 if (bitmap) 2274 mwl8k_enable_bsses(hw, true, bitmap); 2275 2276 mwl8k_fw_unlock(hw); 2277 2278 return rc; 2279 } 2280 2281 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, 2282 struct ieee80211_vif *vif, 2283 struct mwl8k_cmd_pkt *cmd) 2284 { 2285 if (vif != NULL) 2286 cmd->macid = MWL8K_VIF(vif)->macid; 2287 return mwl8k_post_cmd(hw, cmd); 2288 } 2289 2290 /* 2291 * Setup code shared between STA and AP firmware images. 2292 */ 2293 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) 2294 { 2295 struct mwl8k_priv *priv = hw->priv; 2296 2297 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); 2298 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); 2299 2300 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); 2301 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); 2302 2303 priv->band_24.band = NL80211_BAND_2GHZ; 2304 priv->band_24.channels = priv->channels_24; 2305 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); 2306 priv->band_24.bitrates = priv->rates_24; 2307 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); 2308 2309 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; 2310 } 2311 2312 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) 2313 { 2314 struct mwl8k_priv *priv = hw->priv; 2315 2316 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); 2317 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); 2318 2319 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); 2320 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); 2321 2322 priv->band_50.band = NL80211_BAND_5GHZ; 2323 priv->band_50.channels = priv->channels_50; 2324 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); 2325 priv->band_50.bitrates = priv->rates_50; 2326 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); 2327 2328 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; 2329 } 2330 2331 /* 2332 * CMD_GET_HW_SPEC (STA version). 2333 */ 2334 struct mwl8k_cmd_get_hw_spec_sta { 2335 struct mwl8k_cmd_pkt header; 2336 __u8 hw_rev; 2337 __u8 host_interface; 2338 __le16 num_mcaddrs; 2339 __u8 perm_addr[ETH_ALEN]; 2340 __le16 region_code; 2341 __le32 fw_rev; 2342 __le32 ps_cookie; 2343 __le32 caps; 2344 __u8 mcs_bitmap[16]; 2345 __le32 rx_queue_ptr; 2346 __le32 num_tx_queues; 2347 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; 2348 __le32 caps2; 2349 __le32 num_tx_desc_per_queue; 2350 __le32 total_rxd; 2351 } __packed; 2352 2353 #define MWL8K_CAP_MAX_AMSDU 0x20000000 2354 #define MWL8K_CAP_GREENFIELD 0x08000000 2355 #define MWL8K_CAP_AMPDU 0x04000000 2356 #define MWL8K_CAP_RX_STBC 0x01000000 2357 #define MWL8K_CAP_TX_STBC 0x00800000 2358 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 2359 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 2360 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 2361 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 2362 #define MWL8K_CAP_DELAY_BA 0x00003000 2363 #define MWL8K_CAP_MIMO 0x00000200 2364 #define MWL8K_CAP_40MHZ 0x00000100 2365 #define MWL8K_CAP_BAND_MASK 0x00000007 2366 #define MWL8K_CAP_5GHZ 0x00000004 2367 #define MWL8K_CAP_2GHZ4 0x00000001 2368 2369 static void 2370 mwl8k_set_ht_caps(struct ieee80211_hw *hw, 2371 struct ieee80211_supported_band *band, u32 cap) 2372 { 2373 int rx_streams; 2374 int tx_streams; 2375 2376 band->ht_cap.ht_supported = 1; 2377 2378 if (cap & MWL8K_CAP_MAX_AMSDU) 2379 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; 2380 if (cap & MWL8K_CAP_GREENFIELD) 2381 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; 2382 if (cap & MWL8K_CAP_AMPDU) { 2383 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2384 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 2385 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 2386 } 2387 if (cap & MWL8K_CAP_RX_STBC) 2388 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; 2389 if (cap & MWL8K_CAP_TX_STBC) 2390 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; 2391 if (cap & MWL8K_CAP_SHORTGI_40MHZ) 2392 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; 2393 if (cap & MWL8K_CAP_SHORTGI_20MHZ) 2394 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; 2395 if (cap & MWL8K_CAP_DELAY_BA) 2396 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; 2397 if (cap & MWL8K_CAP_40MHZ) 2398 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 2399 2400 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); 2401 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); 2402 2403 band->ht_cap.mcs.rx_mask[0] = 0xff; 2404 if (rx_streams >= 2) 2405 band->ht_cap.mcs.rx_mask[1] = 0xff; 2406 if (rx_streams >= 3) 2407 band->ht_cap.mcs.rx_mask[2] = 0xff; 2408 band->ht_cap.mcs.rx_mask[4] = 0x01; 2409 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2410 2411 if (rx_streams != tx_streams) { 2412 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 2413 band->ht_cap.mcs.tx_params |= (tx_streams - 1) << 2414 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; 2415 } 2416 } 2417 2418 static void 2419 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) 2420 { 2421 struct mwl8k_priv *priv = hw->priv; 2422 2423 if (priv->caps) 2424 return; 2425 2426 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { 2427 mwl8k_setup_2ghz_band(hw); 2428 if (caps & MWL8K_CAP_MIMO) 2429 mwl8k_set_ht_caps(hw, &priv->band_24, caps); 2430 } 2431 2432 if (caps & MWL8K_CAP_5GHZ) { 2433 mwl8k_setup_5ghz_band(hw); 2434 if (caps & MWL8K_CAP_MIMO) 2435 mwl8k_set_ht_caps(hw, &priv->band_50, caps); 2436 } 2437 2438 priv->caps = caps; 2439 } 2440 2441 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) 2442 { 2443 struct mwl8k_priv *priv = hw->priv; 2444 struct mwl8k_cmd_get_hw_spec_sta *cmd; 2445 int rc; 2446 int i; 2447 2448 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2449 if (cmd == NULL) 2450 return -ENOMEM; 2451 2452 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2453 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2454 2455 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2456 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2457 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2458 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2459 for (i = 0; i < mwl8k_tx_queues(priv); i++) 2460 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); 2461 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2462 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2463 2464 rc = mwl8k_post_cmd(hw, &cmd->header); 2465 2466 if (!rc) { 2467 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2468 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2469 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2470 priv->hw_rev = cmd->hw_rev; 2471 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2472 priv->ap_macids_supported = 0x00000000; 2473 priv->sta_macids_supported = 0x00000001; 2474 } 2475 2476 kfree(cmd); 2477 return rc; 2478 } 2479 2480 /* 2481 * CMD_GET_HW_SPEC (AP version). 2482 */ 2483 struct mwl8k_cmd_get_hw_spec_ap { 2484 struct mwl8k_cmd_pkt header; 2485 __u8 hw_rev; 2486 __u8 host_interface; 2487 __le16 num_wcb; 2488 __le16 num_mcaddrs; 2489 __u8 perm_addr[ETH_ALEN]; 2490 __le16 region_code; 2491 __le16 num_antenna; 2492 __le32 fw_rev; 2493 __le32 wcbbase0; 2494 __le32 rxwrptr; 2495 __le32 rxrdptr; 2496 __le32 ps_cookie; 2497 __le32 wcbbase1; 2498 __le32 wcbbase2; 2499 __le32 wcbbase3; 2500 __le32 fw_api_version; 2501 __le32 caps; 2502 __le32 num_of_ampdu_queues; 2503 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; 2504 } __packed; 2505 2506 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) 2507 { 2508 struct mwl8k_priv *priv = hw->priv; 2509 struct mwl8k_cmd_get_hw_spec_ap *cmd; 2510 int rc, i; 2511 u32 api_version; 2512 2513 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2514 if (cmd == NULL) 2515 return -ENOMEM; 2516 2517 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2518 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2519 2520 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2521 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2522 2523 rc = mwl8k_post_cmd(hw, &cmd->header); 2524 2525 if (!rc) { 2526 int off; 2527 2528 api_version = le32_to_cpu(cmd->fw_api_version); 2529 if (priv->device_info->fw_api_ap != api_version) { 2530 printk(KERN_ERR "%s: Unsupported fw API version for %s." 2531 " Expected %d got %d.\n", MWL8K_NAME, 2532 priv->device_info->part_name, 2533 priv->device_info->fw_api_ap, 2534 api_version); 2535 rc = -EINVAL; 2536 goto done; 2537 } 2538 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2539 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2540 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2541 priv->hw_rev = cmd->hw_rev; 2542 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2543 priv->ap_macids_supported = 0x000000ff; 2544 priv->sta_macids_supported = 0x00000100; 2545 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); 2546 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { 2547 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" 2548 " but we only support %d.\n", 2549 priv->num_ampdu_queues, 2550 MWL8K_MAX_AMPDU_QUEUES); 2551 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; 2552 } 2553 off = le32_to_cpu(cmd->rxwrptr) & 0xffff; 2554 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2555 2556 off = le32_to_cpu(cmd->rxrdptr) & 0xffff; 2557 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2558 2559 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; 2560 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; 2561 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; 2562 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; 2563 2564 for (i = 0; i < priv->num_ampdu_queues; i++) 2565 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = 2566 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; 2567 } 2568 2569 done: 2570 kfree(cmd); 2571 return rc; 2572 } 2573 2574 /* 2575 * CMD_SET_HW_SPEC. 2576 */ 2577 struct mwl8k_cmd_set_hw_spec { 2578 struct mwl8k_cmd_pkt header; 2579 __u8 hw_rev; 2580 __u8 host_interface; 2581 __le16 num_mcaddrs; 2582 __u8 perm_addr[ETH_ALEN]; 2583 __le16 region_code; 2584 __le32 fw_rev; 2585 __le32 ps_cookie; 2586 __le32 caps; 2587 __le32 rx_queue_ptr; 2588 __le32 num_tx_queues; 2589 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; 2590 __le32 flags; 2591 __le32 num_tx_desc_per_queue; 2592 __le32 total_rxd; 2593 } __packed; 2594 2595 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause 2596 * packets to expire 500 ms after the timestamp in the tx descriptor. That is, 2597 * the packets that are queued for more than 500ms, will be dropped in the 2598 * hardware. This helps minimizing the issues caused due to head-of-line 2599 * blocking where a slow client can hog the bandwidth and affect traffic to a 2600 * faster client. 2601 */ 2602 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 2603 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 2604 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 2605 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 2606 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 2607 2608 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) 2609 { 2610 struct mwl8k_priv *priv = hw->priv; 2611 struct mwl8k_cmd_set_hw_spec *cmd; 2612 int rc; 2613 int i; 2614 2615 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2616 if (cmd == NULL) 2617 return -ENOMEM; 2618 2619 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); 2620 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2621 2622 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2623 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2624 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2625 2626 /* 2627 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in 2628 * that order. Firmware has Q3 as highest priority and Q0 as lowest 2629 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the 2630 * priority is interpreted the right way in firmware. 2631 */ 2632 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 2633 int j = mwl8k_tx_queues(priv) - 1 - i; 2634 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); 2635 } 2636 2637 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | 2638 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | 2639 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | 2640 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | 2641 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); 2642 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2643 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2644 2645 rc = mwl8k_post_cmd(hw, &cmd->header); 2646 kfree(cmd); 2647 2648 return rc; 2649 } 2650 2651 /* 2652 * CMD_MAC_MULTICAST_ADR. 2653 */ 2654 struct mwl8k_cmd_mac_multicast_adr { 2655 struct mwl8k_cmd_pkt header; 2656 __le16 action; 2657 __le16 numaddr; 2658 __u8 addr[0][ETH_ALEN]; 2659 }; 2660 2661 #define MWL8K_ENABLE_RX_DIRECTED 0x0001 2662 #define MWL8K_ENABLE_RX_MULTICAST 0x0002 2663 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 2664 #define MWL8K_ENABLE_RX_BROADCAST 0x0008 2665 2666 static struct mwl8k_cmd_pkt * 2667 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, 2668 struct netdev_hw_addr_list *mc_list) 2669 { 2670 struct mwl8k_priv *priv = hw->priv; 2671 struct mwl8k_cmd_mac_multicast_adr *cmd; 2672 int size; 2673 int mc_count = 0; 2674 2675 if (mc_list) 2676 mc_count = netdev_hw_addr_list_count(mc_list); 2677 2678 if (allmulti || mc_count > priv->num_mcaddrs) { 2679 allmulti = 1; 2680 mc_count = 0; 2681 } 2682 2683 size = sizeof(*cmd) + mc_count * ETH_ALEN; 2684 2685 cmd = kzalloc(size, GFP_ATOMIC); 2686 if (cmd == NULL) 2687 return NULL; 2688 2689 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); 2690 cmd->header.length = cpu_to_le16(size); 2691 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | 2692 MWL8K_ENABLE_RX_BROADCAST); 2693 2694 if (allmulti) { 2695 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); 2696 } else if (mc_count) { 2697 struct netdev_hw_addr *ha; 2698 int i = 0; 2699 2700 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); 2701 cmd->numaddr = cpu_to_le16(mc_count); 2702 netdev_hw_addr_list_for_each(ha, mc_list) { 2703 memcpy(cmd->addr[i], ha->addr, ETH_ALEN); 2704 } 2705 } 2706 2707 return &cmd->header; 2708 } 2709 2710 /* 2711 * CMD_GET_STAT. 2712 */ 2713 struct mwl8k_cmd_get_stat { 2714 struct mwl8k_cmd_pkt header; 2715 __le32 stats[64]; 2716 } __packed; 2717 2718 #define MWL8K_STAT_ACK_FAILURE 9 2719 #define MWL8K_STAT_RTS_FAILURE 12 2720 #define MWL8K_STAT_FCS_ERROR 24 2721 #define MWL8K_STAT_RTS_SUCCESS 11 2722 2723 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, 2724 struct ieee80211_low_level_stats *stats) 2725 { 2726 struct mwl8k_cmd_get_stat *cmd; 2727 int rc; 2728 2729 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2730 if (cmd == NULL) 2731 return -ENOMEM; 2732 2733 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); 2734 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2735 2736 rc = mwl8k_post_cmd(hw, &cmd->header); 2737 if (!rc) { 2738 stats->dot11ACKFailureCount = 2739 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); 2740 stats->dot11RTSFailureCount = 2741 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); 2742 stats->dot11FCSErrorCount = 2743 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); 2744 stats->dot11RTSSuccessCount = 2745 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); 2746 } 2747 kfree(cmd); 2748 2749 return rc; 2750 } 2751 2752 /* 2753 * CMD_RADIO_CONTROL. 2754 */ 2755 struct mwl8k_cmd_radio_control { 2756 struct mwl8k_cmd_pkt header; 2757 __le16 action; 2758 __le16 control; 2759 __le16 radio_on; 2760 } __packed; 2761 2762 static int 2763 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) 2764 { 2765 struct mwl8k_priv *priv = hw->priv; 2766 struct mwl8k_cmd_radio_control *cmd; 2767 int rc; 2768 2769 if (enable == priv->radio_on && !force) 2770 return 0; 2771 2772 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2773 if (cmd == NULL) 2774 return -ENOMEM; 2775 2776 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); 2777 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2778 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2779 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); 2780 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); 2781 2782 rc = mwl8k_post_cmd(hw, &cmd->header); 2783 kfree(cmd); 2784 2785 if (!rc) 2786 priv->radio_on = enable; 2787 2788 return rc; 2789 } 2790 2791 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) 2792 { 2793 return mwl8k_cmd_radio_control(hw, 0, 0); 2794 } 2795 2796 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) 2797 { 2798 return mwl8k_cmd_radio_control(hw, 1, 0); 2799 } 2800 2801 static int 2802 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) 2803 { 2804 struct mwl8k_priv *priv = hw->priv; 2805 2806 priv->radio_short_preamble = short_preamble; 2807 2808 return mwl8k_cmd_radio_control(hw, 1, 1); 2809 } 2810 2811 /* 2812 * CMD_RF_TX_POWER. 2813 */ 2814 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 2815 2816 struct mwl8k_cmd_rf_tx_power { 2817 struct mwl8k_cmd_pkt header; 2818 __le16 action; 2819 __le16 support_level; 2820 __le16 current_level; 2821 __le16 reserved; 2822 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; 2823 } __packed; 2824 2825 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) 2826 { 2827 struct mwl8k_cmd_rf_tx_power *cmd; 2828 int rc; 2829 2830 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2831 if (cmd == NULL) 2832 return -ENOMEM; 2833 2834 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); 2835 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2836 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2837 cmd->support_level = cpu_to_le16(dBm); 2838 2839 rc = mwl8k_post_cmd(hw, &cmd->header); 2840 kfree(cmd); 2841 2842 return rc; 2843 } 2844 2845 /* 2846 * CMD_TX_POWER. 2847 */ 2848 #define MWL8K_TX_POWER_LEVEL_TOTAL 12 2849 2850 struct mwl8k_cmd_tx_power { 2851 struct mwl8k_cmd_pkt header; 2852 __le16 action; 2853 __le16 band; 2854 __le16 channel; 2855 __le16 bw; 2856 __le16 sub_ch; 2857 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; 2858 } __packed; 2859 2860 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, 2861 struct ieee80211_conf *conf, 2862 unsigned short pwr) 2863 { 2864 struct ieee80211_channel *channel = conf->chandef.chan; 2865 enum nl80211_channel_type channel_type = 2866 cfg80211_get_chandef_type(&conf->chandef); 2867 struct mwl8k_cmd_tx_power *cmd; 2868 int rc; 2869 int i; 2870 2871 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2872 if (cmd == NULL) 2873 return -ENOMEM; 2874 2875 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); 2876 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2877 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); 2878 2879 if (channel->band == NL80211_BAND_2GHZ) 2880 cmd->band = cpu_to_le16(0x1); 2881 else if (channel->band == NL80211_BAND_5GHZ) 2882 cmd->band = cpu_to_le16(0x4); 2883 2884 cmd->channel = cpu_to_le16(channel->hw_value); 2885 2886 if (channel_type == NL80211_CHAN_NO_HT || 2887 channel_type == NL80211_CHAN_HT20) { 2888 cmd->bw = cpu_to_le16(0x2); 2889 } else { 2890 cmd->bw = cpu_to_le16(0x4); 2891 if (channel_type == NL80211_CHAN_HT40MINUS) 2892 cmd->sub_ch = cpu_to_le16(0x3); 2893 else if (channel_type == NL80211_CHAN_HT40PLUS) 2894 cmd->sub_ch = cpu_to_le16(0x1); 2895 } 2896 2897 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) 2898 cmd->power_level_list[i] = cpu_to_le16(pwr); 2899 2900 rc = mwl8k_post_cmd(hw, &cmd->header); 2901 kfree(cmd); 2902 2903 return rc; 2904 } 2905 2906 /* 2907 * CMD_RF_ANTENNA. 2908 */ 2909 struct mwl8k_cmd_rf_antenna { 2910 struct mwl8k_cmd_pkt header; 2911 __le16 antenna; 2912 __le16 mode; 2913 } __packed; 2914 2915 #define MWL8K_RF_ANTENNA_RX 1 2916 #define MWL8K_RF_ANTENNA_TX 2 2917 2918 static int 2919 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) 2920 { 2921 struct mwl8k_cmd_rf_antenna *cmd; 2922 int rc; 2923 2924 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2925 if (cmd == NULL) 2926 return -ENOMEM; 2927 2928 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); 2929 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2930 cmd->antenna = cpu_to_le16(antenna); 2931 cmd->mode = cpu_to_le16(mask); 2932 2933 rc = mwl8k_post_cmd(hw, &cmd->header); 2934 kfree(cmd); 2935 2936 return rc; 2937 } 2938 2939 /* 2940 * CMD_SET_BEACON. 2941 */ 2942 struct mwl8k_cmd_set_beacon { 2943 struct mwl8k_cmd_pkt header; 2944 __le16 beacon_len; 2945 __u8 beacon[0]; 2946 }; 2947 2948 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, 2949 struct ieee80211_vif *vif, u8 *beacon, int len) 2950 { 2951 struct mwl8k_cmd_set_beacon *cmd; 2952 int rc; 2953 2954 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); 2955 if (cmd == NULL) 2956 return -ENOMEM; 2957 2958 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); 2959 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); 2960 cmd->beacon_len = cpu_to_le16(len); 2961 memcpy(cmd->beacon, beacon, len); 2962 2963 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 2964 kfree(cmd); 2965 2966 return rc; 2967 } 2968 2969 /* 2970 * CMD_SET_PRE_SCAN. 2971 */ 2972 struct mwl8k_cmd_set_pre_scan { 2973 struct mwl8k_cmd_pkt header; 2974 } __packed; 2975 2976 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) 2977 { 2978 struct mwl8k_cmd_set_pre_scan *cmd; 2979 int rc; 2980 2981 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2982 if (cmd == NULL) 2983 return -ENOMEM; 2984 2985 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); 2986 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2987 2988 rc = mwl8k_post_cmd(hw, &cmd->header); 2989 kfree(cmd); 2990 2991 return rc; 2992 } 2993 2994 /* 2995 * CMD_BBP_REG_ACCESS. 2996 */ 2997 struct mwl8k_cmd_bbp_reg_access { 2998 struct mwl8k_cmd_pkt header; 2999 __le16 action; 3000 __le16 offset; 3001 u8 value; 3002 u8 rsrv[3]; 3003 } __packed; 3004 3005 static int 3006 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, 3007 u16 action, 3008 u16 offset, 3009 u8 *value) 3010 { 3011 struct mwl8k_cmd_bbp_reg_access *cmd; 3012 int rc; 3013 3014 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3015 if (cmd == NULL) 3016 return -ENOMEM; 3017 3018 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); 3019 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3020 cmd->action = cpu_to_le16(action); 3021 cmd->offset = cpu_to_le16(offset); 3022 3023 rc = mwl8k_post_cmd(hw, &cmd->header); 3024 3025 if (!rc) 3026 *value = cmd->value; 3027 else 3028 *value = 0; 3029 3030 kfree(cmd); 3031 3032 return rc; 3033 } 3034 3035 /* 3036 * CMD_SET_POST_SCAN. 3037 */ 3038 struct mwl8k_cmd_set_post_scan { 3039 struct mwl8k_cmd_pkt header; 3040 __le32 isibss; 3041 __u8 bssid[ETH_ALEN]; 3042 } __packed; 3043 3044 static int 3045 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) 3046 { 3047 struct mwl8k_cmd_set_post_scan *cmd; 3048 int rc; 3049 3050 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3051 if (cmd == NULL) 3052 return -ENOMEM; 3053 3054 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); 3055 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3056 cmd->isibss = 0; 3057 memcpy(cmd->bssid, mac, ETH_ALEN); 3058 3059 rc = mwl8k_post_cmd(hw, &cmd->header); 3060 kfree(cmd); 3061 3062 return rc; 3063 } 3064 3065 static int freq_to_idx(struct mwl8k_priv *priv, int freq) 3066 { 3067 struct ieee80211_supported_band *sband; 3068 int band, ch, idx = 0; 3069 3070 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { 3071 sband = priv->hw->wiphy->bands[band]; 3072 if (!sband) 3073 continue; 3074 3075 for (ch = 0; ch < sband->n_channels; ch++, idx++) 3076 if (sband->channels[ch].center_freq == freq) 3077 goto exit; 3078 } 3079 3080 exit: 3081 return idx; 3082 } 3083 3084 static void mwl8k_update_survey(struct mwl8k_priv *priv, 3085 struct ieee80211_channel *channel) 3086 { 3087 u32 cca_cnt, rx_rdy; 3088 s8 nf = 0, idx; 3089 struct survey_info *survey; 3090 3091 idx = freq_to_idx(priv, priv->acs_chan->center_freq); 3092 if (idx >= MWL8K_NUM_CHANS) { 3093 wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); 3094 return; 3095 } 3096 3097 survey = &priv->survey[idx]; 3098 3099 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); 3100 cca_cnt /= 1000; /* uSecs to mSecs */ 3101 survey->time_busy = (u64) cca_cnt; 3102 3103 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); 3104 rx_rdy /= 1000; /* uSecs to mSecs */ 3105 survey->time_rx = (u64) rx_rdy; 3106 3107 priv->channel_time = jiffies - priv->channel_time; 3108 survey->time = jiffies_to_msecs(priv->channel_time); 3109 3110 survey->channel = channel; 3111 3112 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); 3113 3114 /* Make sure sign is negative else ACS at hostapd fails */ 3115 survey->noise = nf * -1; 3116 3117 survey->filled = SURVEY_INFO_NOISE_DBM | 3118 SURVEY_INFO_TIME | 3119 SURVEY_INFO_TIME_BUSY | 3120 SURVEY_INFO_TIME_RX; 3121 } 3122 3123 /* 3124 * CMD_SET_RF_CHANNEL. 3125 */ 3126 struct mwl8k_cmd_set_rf_channel { 3127 struct mwl8k_cmd_pkt header; 3128 __le16 action; 3129 __u8 current_channel; 3130 __le32 channel_flags; 3131 } __packed; 3132 3133 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, 3134 struct ieee80211_conf *conf) 3135 { 3136 struct ieee80211_channel *channel = conf->chandef.chan; 3137 enum nl80211_channel_type channel_type = 3138 cfg80211_get_chandef_type(&conf->chandef); 3139 struct mwl8k_cmd_set_rf_channel *cmd; 3140 struct mwl8k_priv *priv = hw->priv; 3141 int rc; 3142 3143 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3144 if (cmd == NULL) 3145 return -ENOMEM; 3146 3147 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); 3148 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3149 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3150 cmd->current_channel = channel->hw_value; 3151 3152 if (channel->band == NL80211_BAND_2GHZ) 3153 cmd->channel_flags |= cpu_to_le32(0x00000001); 3154 else if (channel->band == NL80211_BAND_5GHZ) 3155 cmd->channel_flags |= cpu_to_le32(0x00000004); 3156 3157 if (!priv->sw_scan_start) { 3158 if (channel_type == NL80211_CHAN_NO_HT || 3159 channel_type == NL80211_CHAN_HT20) 3160 cmd->channel_flags |= cpu_to_le32(0x00000080); 3161 else if (channel_type == NL80211_CHAN_HT40MINUS) 3162 cmd->channel_flags |= cpu_to_le32(0x000001900); 3163 else if (channel_type == NL80211_CHAN_HT40PLUS) 3164 cmd->channel_flags |= cpu_to_le32(0x000000900); 3165 } else { 3166 cmd->channel_flags |= cpu_to_le32(0x00000080); 3167 } 3168 3169 if (priv->sw_scan_start) { 3170 /* Store current channel stats 3171 * before switching to newer one. 3172 * This will be processed only for AP fw. 3173 */ 3174 if (priv->channel_time != 0) 3175 mwl8k_update_survey(priv, priv->acs_chan); 3176 3177 priv->channel_time = jiffies; 3178 priv->acs_chan = channel; 3179 } 3180 3181 rc = mwl8k_post_cmd(hw, &cmd->header); 3182 kfree(cmd); 3183 3184 return rc; 3185 } 3186 3187 /* 3188 * CMD_SET_AID. 3189 */ 3190 #define MWL8K_FRAME_PROT_DISABLED 0x00 3191 #define MWL8K_FRAME_PROT_11G 0x07 3192 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 3193 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 3194 3195 struct mwl8k_cmd_update_set_aid { 3196 struct mwl8k_cmd_pkt header; 3197 __le16 aid; 3198 3199 /* AP's MAC address (BSSID) */ 3200 __u8 bssid[ETH_ALEN]; 3201 __le16 protection_mode; 3202 __u8 supp_rates[14]; 3203 } __packed; 3204 3205 static void legacy_rate_mask_to_array(u8 *rates, u32 mask) 3206 { 3207 int i; 3208 int j; 3209 3210 /* 3211 * Clear nonstandard rate 4. 3212 */ 3213 mask &= 0x1fef; 3214 3215 for (i = 0, j = 0; i < 13; i++) { 3216 if (mask & (1 << i)) 3217 rates[j++] = mwl8k_rates_24[i].hw_value; 3218 } 3219 } 3220 3221 static int 3222 mwl8k_cmd_set_aid(struct ieee80211_hw *hw, 3223 struct ieee80211_vif *vif, u32 legacy_rate_mask) 3224 { 3225 struct mwl8k_cmd_update_set_aid *cmd; 3226 u16 prot_mode; 3227 int rc; 3228 3229 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3230 if (cmd == NULL) 3231 return -ENOMEM; 3232 3233 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); 3234 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3235 cmd->aid = cpu_to_le16(vif->bss_conf.aid); 3236 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 3237 3238 if (vif->bss_conf.use_cts_prot) { 3239 prot_mode = MWL8K_FRAME_PROT_11G; 3240 } else { 3241 switch (vif->bss_conf.ht_operation_mode & 3242 IEEE80211_HT_OP_MODE_PROTECTION) { 3243 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 3244 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; 3245 break; 3246 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 3247 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; 3248 break; 3249 default: 3250 prot_mode = MWL8K_FRAME_PROT_DISABLED; 3251 break; 3252 } 3253 } 3254 cmd->protection_mode = cpu_to_le16(prot_mode); 3255 3256 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); 3257 3258 rc = mwl8k_post_cmd(hw, &cmd->header); 3259 kfree(cmd); 3260 3261 return rc; 3262 } 3263 3264 /* 3265 * CMD_SET_RATE. 3266 */ 3267 struct mwl8k_cmd_set_rate { 3268 struct mwl8k_cmd_pkt header; 3269 __u8 legacy_rates[14]; 3270 3271 /* Bitmap for supported MCS codes. */ 3272 __u8 mcs_set[16]; 3273 __u8 reserved[16]; 3274 } __packed; 3275 3276 static int 3277 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3278 u32 legacy_rate_mask, u8 *mcs_rates) 3279 { 3280 struct mwl8k_cmd_set_rate *cmd; 3281 int rc; 3282 3283 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3284 if (cmd == NULL) 3285 return -ENOMEM; 3286 3287 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); 3288 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3289 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); 3290 memcpy(cmd->mcs_set, mcs_rates, 16); 3291 3292 rc = mwl8k_post_cmd(hw, &cmd->header); 3293 kfree(cmd); 3294 3295 return rc; 3296 } 3297 3298 /* 3299 * CMD_FINALIZE_JOIN. 3300 */ 3301 #define MWL8K_FJ_BEACON_MAXLEN 128 3302 3303 struct mwl8k_cmd_finalize_join { 3304 struct mwl8k_cmd_pkt header; 3305 __le32 sleep_interval; /* Number of beacon periods to sleep */ 3306 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; 3307 } __packed; 3308 3309 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, 3310 int framelen, int dtim) 3311 { 3312 struct mwl8k_cmd_finalize_join *cmd; 3313 struct ieee80211_mgmt *payload = frame; 3314 int payload_len; 3315 int rc; 3316 3317 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3318 if (cmd == NULL) 3319 return -ENOMEM; 3320 3321 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); 3322 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3323 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); 3324 3325 payload_len = framelen - ieee80211_hdrlen(payload->frame_control); 3326 if (payload_len < 0) 3327 payload_len = 0; 3328 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) 3329 payload_len = MWL8K_FJ_BEACON_MAXLEN; 3330 3331 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); 3332 3333 rc = mwl8k_post_cmd(hw, &cmd->header); 3334 kfree(cmd); 3335 3336 return rc; 3337 } 3338 3339 /* 3340 * CMD_SET_RTS_THRESHOLD. 3341 */ 3342 struct mwl8k_cmd_set_rts_threshold { 3343 struct mwl8k_cmd_pkt header; 3344 __le16 action; 3345 __le16 threshold; 3346 } __packed; 3347 3348 static int 3349 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) 3350 { 3351 struct mwl8k_cmd_set_rts_threshold *cmd; 3352 int rc; 3353 3354 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3355 if (cmd == NULL) 3356 return -ENOMEM; 3357 3358 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); 3359 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3360 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3361 cmd->threshold = cpu_to_le16(rts_thresh); 3362 3363 rc = mwl8k_post_cmd(hw, &cmd->header); 3364 kfree(cmd); 3365 3366 return rc; 3367 } 3368 3369 /* 3370 * CMD_SET_SLOT. 3371 */ 3372 struct mwl8k_cmd_set_slot { 3373 struct mwl8k_cmd_pkt header; 3374 __le16 action; 3375 __u8 short_slot; 3376 } __packed; 3377 3378 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) 3379 { 3380 struct mwl8k_cmd_set_slot *cmd; 3381 int rc; 3382 3383 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3384 if (cmd == NULL) 3385 return -ENOMEM; 3386 3387 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); 3388 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3389 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3390 cmd->short_slot = short_slot_time; 3391 3392 rc = mwl8k_post_cmd(hw, &cmd->header); 3393 kfree(cmd); 3394 3395 return rc; 3396 } 3397 3398 /* 3399 * CMD_SET_EDCA_PARAMS. 3400 */ 3401 struct mwl8k_cmd_set_edca_params { 3402 struct mwl8k_cmd_pkt header; 3403 3404 /* See MWL8K_SET_EDCA_XXX below */ 3405 __le16 action; 3406 3407 /* TX opportunity in units of 32 us */ 3408 __le16 txop; 3409 3410 union { 3411 struct { 3412 /* Log exponent of max contention period: 0...15 */ 3413 __le32 log_cw_max; 3414 3415 /* Log exponent of min contention period: 0...15 */ 3416 __le32 log_cw_min; 3417 3418 /* Adaptive interframe spacing in units of 32us */ 3419 __u8 aifs; 3420 3421 /* TX queue to configure */ 3422 __u8 txq; 3423 } ap; 3424 struct { 3425 /* Log exponent of max contention period: 0...15 */ 3426 __u8 log_cw_max; 3427 3428 /* Log exponent of min contention period: 0...15 */ 3429 __u8 log_cw_min; 3430 3431 /* Adaptive interframe spacing in units of 32us */ 3432 __u8 aifs; 3433 3434 /* TX queue to configure */ 3435 __u8 txq; 3436 } sta; 3437 }; 3438 } __packed; 3439 3440 #define MWL8K_SET_EDCA_CW 0x01 3441 #define MWL8K_SET_EDCA_TXOP 0x02 3442 #define MWL8K_SET_EDCA_AIFS 0x04 3443 3444 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ 3445 MWL8K_SET_EDCA_TXOP | \ 3446 MWL8K_SET_EDCA_AIFS) 3447 3448 static int 3449 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, 3450 __u16 cw_min, __u16 cw_max, 3451 __u8 aifs, __u16 txop) 3452 { 3453 struct mwl8k_priv *priv = hw->priv; 3454 struct mwl8k_cmd_set_edca_params *cmd; 3455 int rc; 3456 3457 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3458 if (cmd == NULL) 3459 return -ENOMEM; 3460 3461 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); 3462 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3463 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); 3464 cmd->txop = cpu_to_le16(txop); 3465 if (priv->ap_fw) { 3466 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); 3467 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); 3468 cmd->ap.aifs = aifs; 3469 cmd->ap.txq = qnum; 3470 } else { 3471 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); 3472 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); 3473 cmd->sta.aifs = aifs; 3474 cmd->sta.txq = qnum; 3475 } 3476 3477 rc = mwl8k_post_cmd(hw, &cmd->header); 3478 kfree(cmd); 3479 3480 return rc; 3481 } 3482 3483 /* 3484 * CMD_SET_WMM_MODE. 3485 */ 3486 struct mwl8k_cmd_set_wmm_mode { 3487 struct mwl8k_cmd_pkt header; 3488 __le16 action; 3489 } __packed; 3490 3491 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) 3492 { 3493 struct mwl8k_priv *priv = hw->priv; 3494 struct mwl8k_cmd_set_wmm_mode *cmd; 3495 int rc; 3496 3497 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3498 if (cmd == NULL) 3499 return -ENOMEM; 3500 3501 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); 3502 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3503 cmd->action = cpu_to_le16(!!enable); 3504 3505 rc = mwl8k_post_cmd(hw, &cmd->header); 3506 kfree(cmd); 3507 3508 if (!rc) 3509 priv->wmm_enabled = enable; 3510 3511 return rc; 3512 } 3513 3514 /* 3515 * CMD_MIMO_CONFIG. 3516 */ 3517 struct mwl8k_cmd_mimo_config { 3518 struct mwl8k_cmd_pkt header; 3519 __le32 action; 3520 __u8 rx_antenna_map; 3521 __u8 tx_antenna_map; 3522 } __packed; 3523 3524 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) 3525 { 3526 struct mwl8k_cmd_mimo_config *cmd; 3527 int rc; 3528 3529 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3530 if (cmd == NULL) 3531 return -ENOMEM; 3532 3533 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); 3534 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3535 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); 3536 cmd->rx_antenna_map = rx; 3537 cmd->tx_antenna_map = tx; 3538 3539 rc = mwl8k_post_cmd(hw, &cmd->header); 3540 kfree(cmd); 3541 3542 return rc; 3543 } 3544 3545 /* 3546 * CMD_USE_FIXED_RATE (STA version). 3547 */ 3548 struct mwl8k_cmd_use_fixed_rate_sta { 3549 struct mwl8k_cmd_pkt header; 3550 __le32 action; 3551 __le32 allow_rate_drop; 3552 __le32 num_rates; 3553 struct { 3554 __le32 is_ht_rate; 3555 __le32 enable_retry; 3556 __le32 rate; 3557 __le32 retry_count; 3558 } rate_entry[8]; 3559 __le32 rate_type; 3560 __le32 reserved1; 3561 __le32 reserved2; 3562 } __packed; 3563 3564 #define MWL8K_USE_AUTO_RATE 0x0002 3565 #define MWL8K_UCAST_RATE 0 3566 3567 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) 3568 { 3569 struct mwl8k_cmd_use_fixed_rate_sta *cmd; 3570 int rc; 3571 3572 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3573 if (cmd == NULL) 3574 return -ENOMEM; 3575 3576 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3577 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3578 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3579 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); 3580 3581 rc = mwl8k_post_cmd(hw, &cmd->header); 3582 kfree(cmd); 3583 3584 return rc; 3585 } 3586 3587 /* 3588 * CMD_USE_FIXED_RATE (AP version). 3589 */ 3590 struct mwl8k_cmd_use_fixed_rate_ap { 3591 struct mwl8k_cmd_pkt header; 3592 __le32 action; 3593 __le32 allow_rate_drop; 3594 __le32 num_rates; 3595 struct mwl8k_rate_entry_ap { 3596 __le32 is_ht_rate; 3597 __le32 enable_retry; 3598 __le32 rate; 3599 __le32 retry_count; 3600 } rate_entry[4]; 3601 u8 multicast_rate; 3602 u8 multicast_rate_type; 3603 u8 management_rate; 3604 } __packed; 3605 3606 static int 3607 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) 3608 { 3609 struct mwl8k_cmd_use_fixed_rate_ap *cmd; 3610 int rc; 3611 3612 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3613 if (cmd == NULL) 3614 return -ENOMEM; 3615 3616 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3617 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3618 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3619 cmd->multicast_rate = mcast; 3620 cmd->management_rate = mgmt; 3621 3622 rc = mwl8k_post_cmd(hw, &cmd->header); 3623 kfree(cmd); 3624 3625 return rc; 3626 } 3627 3628 /* 3629 * CMD_ENABLE_SNIFFER. 3630 */ 3631 struct mwl8k_cmd_enable_sniffer { 3632 struct mwl8k_cmd_pkt header; 3633 __le32 action; 3634 } __packed; 3635 3636 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) 3637 { 3638 struct mwl8k_cmd_enable_sniffer *cmd; 3639 int rc; 3640 3641 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3642 if (cmd == NULL) 3643 return -ENOMEM; 3644 3645 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); 3646 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3647 cmd->action = cpu_to_le32(!!enable); 3648 3649 rc = mwl8k_post_cmd(hw, &cmd->header); 3650 kfree(cmd); 3651 3652 return rc; 3653 } 3654 3655 struct mwl8k_cmd_update_mac_addr { 3656 struct mwl8k_cmd_pkt header; 3657 union { 3658 struct { 3659 __le16 mac_type; 3660 __u8 mac_addr[ETH_ALEN]; 3661 } mbss; 3662 __u8 mac_addr[ETH_ALEN]; 3663 }; 3664 } __packed; 3665 3666 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 3667 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 3668 #define MWL8K_MAC_TYPE_PRIMARY_AP 2 3669 #define MWL8K_MAC_TYPE_SECONDARY_AP 3 3670 3671 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, 3672 struct ieee80211_vif *vif, u8 *mac, bool set) 3673 { 3674 struct mwl8k_priv *priv = hw->priv; 3675 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3676 struct mwl8k_cmd_update_mac_addr *cmd; 3677 int mac_type; 3678 int rc; 3679 3680 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3681 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { 3682 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) 3683 if (priv->ap_fw) 3684 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3685 else 3686 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; 3687 else 3688 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3689 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { 3690 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) 3691 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3692 else 3693 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; 3694 } 3695 3696 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3697 if (cmd == NULL) 3698 return -ENOMEM; 3699 3700 if (set) 3701 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); 3702 else 3703 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); 3704 3705 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3706 if (priv->ap_fw) { 3707 cmd->mbss.mac_type = cpu_to_le16(mac_type); 3708 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); 3709 } else { 3710 memcpy(cmd->mac_addr, mac, ETH_ALEN); 3711 } 3712 3713 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3714 kfree(cmd); 3715 3716 return rc; 3717 } 3718 3719 /* 3720 * MWL8K_CMD_SET_MAC_ADDR. 3721 */ 3722 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, 3723 struct ieee80211_vif *vif, u8 *mac) 3724 { 3725 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); 3726 } 3727 3728 /* 3729 * MWL8K_CMD_DEL_MAC_ADDR. 3730 */ 3731 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, 3732 struct ieee80211_vif *vif, u8 *mac) 3733 { 3734 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); 3735 } 3736 3737 /* 3738 * CMD_SET_RATEADAPT_MODE. 3739 */ 3740 struct mwl8k_cmd_set_rate_adapt_mode { 3741 struct mwl8k_cmd_pkt header; 3742 __le16 action; 3743 __le16 mode; 3744 } __packed; 3745 3746 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) 3747 { 3748 struct mwl8k_cmd_set_rate_adapt_mode *cmd; 3749 int rc; 3750 3751 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3752 if (cmd == NULL) 3753 return -ENOMEM; 3754 3755 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); 3756 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3757 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3758 cmd->mode = cpu_to_le16(mode); 3759 3760 rc = mwl8k_post_cmd(hw, &cmd->header); 3761 kfree(cmd); 3762 3763 return rc; 3764 } 3765 3766 /* 3767 * CMD_GET_WATCHDOG_BITMAP. 3768 */ 3769 struct mwl8k_cmd_get_watchdog_bitmap { 3770 struct mwl8k_cmd_pkt header; 3771 u8 bitmap; 3772 } __packed; 3773 3774 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) 3775 { 3776 struct mwl8k_cmd_get_watchdog_bitmap *cmd; 3777 int rc; 3778 3779 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3780 if (cmd == NULL) 3781 return -ENOMEM; 3782 3783 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); 3784 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3785 3786 rc = mwl8k_post_cmd(hw, &cmd->header); 3787 if (!rc) 3788 *bitmap = cmd->bitmap; 3789 3790 kfree(cmd); 3791 3792 return rc; 3793 } 3794 3795 #define MWL8K_WMM_QUEUE_NUMBER 3 3796 3797 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 3798 u8 idx); 3799 3800 static void mwl8k_watchdog_ba_events(struct work_struct *work) 3801 { 3802 int rc; 3803 u8 bitmap = 0, stream_index; 3804 struct mwl8k_ampdu_stream *streams; 3805 struct mwl8k_priv *priv = 3806 container_of(work, struct mwl8k_priv, watchdog_ba_handle); 3807 struct ieee80211_hw *hw = priv->hw; 3808 int i; 3809 u32 status = 0; 3810 3811 mwl8k_fw_lock(hw); 3812 3813 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); 3814 if (rc) 3815 goto done; 3816 3817 spin_lock(&priv->stream_lock); 3818 3819 /* the bitmap is the hw queue number. Map it to the ampdu queue. */ 3820 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { 3821 if (bitmap & (1 << i)) { 3822 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % 3823 TOTAL_HW_TX_QUEUES; 3824 streams = &priv->ampdu[stream_index]; 3825 if (streams->state == AMPDU_STREAM_ACTIVE) { 3826 ieee80211_stop_tx_ba_session(streams->sta, 3827 streams->tid); 3828 spin_unlock(&priv->stream_lock); 3829 mwl8k_destroy_ba(hw, stream_index); 3830 spin_lock(&priv->stream_lock); 3831 } 3832 } 3833 } 3834 3835 spin_unlock(&priv->stream_lock); 3836 done: 3837 atomic_dec(&priv->watchdog_event_pending); 3838 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3839 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), 3840 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3841 mwl8k_fw_unlock(hw); 3842 return; 3843 } 3844 3845 3846 /* 3847 * CMD_BSS_START. 3848 */ 3849 struct mwl8k_cmd_bss_start { 3850 struct mwl8k_cmd_pkt header; 3851 __le32 enable; 3852 } __packed; 3853 3854 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 3855 struct ieee80211_vif *vif, int enable) 3856 { 3857 struct mwl8k_cmd_bss_start *cmd; 3858 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3859 struct mwl8k_priv *priv = hw->priv; 3860 int rc; 3861 3862 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) 3863 return 0; 3864 3865 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) 3866 return 0; 3867 3868 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3869 if (cmd == NULL) 3870 return -ENOMEM; 3871 3872 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); 3873 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3874 cmd->enable = cpu_to_le32(enable); 3875 3876 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3877 kfree(cmd); 3878 3879 if (!rc) { 3880 if (enable) 3881 priv->running_bsses |= (1 << mwl8k_vif->macid); 3882 else 3883 priv->running_bsses &= ~(1 << mwl8k_vif->macid); 3884 } 3885 return rc; 3886 } 3887 3888 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) 3889 { 3890 struct mwl8k_priv *priv = hw->priv; 3891 struct mwl8k_vif *mwl8k_vif, *tmp_vif; 3892 struct ieee80211_vif *vif; 3893 3894 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { 3895 vif = mwl8k_vif->vif; 3896 3897 if (!(bitmap & (1 << mwl8k_vif->macid))) 3898 continue; 3899 3900 if (vif->type == NL80211_IFTYPE_AP) 3901 mwl8k_cmd_bss_start(hw, vif, enable); 3902 } 3903 } 3904 /* 3905 * CMD_BASTREAM. 3906 */ 3907 3908 /* 3909 * UPSTREAM is tx direction 3910 */ 3911 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 3912 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 3913 3914 enum ba_stream_action_type { 3915 MWL8K_BA_CREATE, 3916 MWL8K_BA_UPDATE, 3917 MWL8K_BA_DESTROY, 3918 MWL8K_BA_FLUSH, 3919 MWL8K_BA_CHECK, 3920 }; 3921 3922 3923 struct mwl8k_create_ba_stream { 3924 __le32 flags; 3925 __le32 idle_thrs; 3926 __le32 bar_thrs; 3927 __le32 window_size; 3928 u8 peer_mac_addr[6]; 3929 u8 dialog_token; 3930 u8 tid; 3931 u8 queue_id; 3932 u8 param_info; 3933 __le32 ba_context; 3934 u8 reset_seq_no_flag; 3935 __le16 curr_seq_no; 3936 u8 sta_src_mac_addr[6]; 3937 } __packed; 3938 3939 struct mwl8k_destroy_ba_stream { 3940 __le32 flags; 3941 __le32 ba_context; 3942 } __packed; 3943 3944 struct mwl8k_cmd_bastream { 3945 struct mwl8k_cmd_pkt header; 3946 __le32 action; 3947 union { 3948 struct mwl8k_create_ba_stream create_params; 3949 struct mwl8k_destroy_ba_stream destroy_params; 3950 }; 3951 } __packed; 3952 3953 static int 3954 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 3955 struct ieee80211_vif *vif) 3956 { 3957 struct mwl8k_cmd_bastream *cmd; 3958 int rc; 3959 3960 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3961 if (cmd == NULL) 3962 return -ENOMEM; 3963 3964 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 3965 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3966 3967 cmd->action = cpu_to_le32(MWL8K_BA_CHECK); 3968 3969 cmd->create_params.queue_id = stream->idx; 3970 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, 3971 ETH_ALEN); 3972 cmd->create_params.tid = stream->tid; 3973 3974 cmd->create_params.flags = 3975 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | 3976 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); 3977 3978 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3979 3980 kfree(cmd); 3981 3982 return rc; 3983 } 3984 3985 static int 3986 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 3987 u8 buf_size, struct ieee80211_vif *vif) 3988 { 3989 struct mwl8k_cmd_bastream *cmd; 3990 int rc; 3991 3992 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3993 if (cmd == NULL) 3994 return -ENOMEM; 3995 3996 3997 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 3998 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3999 4000 cmd->action = cpu_to_le32(MWL8K_BA_CREATE); 4001 4002 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); 4003 cmd->create_params.window_size = cpu_to_le32((u32)buf_size); 4004 cmd->create_params.queue_id = stream->idx; 4005 4006 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); 4007 cmd->create_params.tid = stream->tid; 4008 cmd->create_params.curr_seq_no = cpu_to_le16(0); 4009 cmd->create_params.reset_seq_no_flag = 1; 4010 4011 cmd->create_params.param_info = 4012 (stream->sta->ht_cap.ampdu_factor & 4013 IEEE80211_HT_AMPDU_PARM_FACTOR) | 4014 ((stream->sta->ht_cap.ampdu_density << 2) & 4015 IEEE80211_HT_AMPDU_PARM_DENSITY); 4016 4017 cmd->create_params.flags = 4018 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | 4019 BASTREAM_FLAG_DIRECTION_UPSTREAM); 4020 4021 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4022 4023 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", 4024 stream->sta->addr, stream->tid); 4025 kfree(cmd); 4026 4027 return rc; 4028 } 4029 4030 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 4031 u8 idx) 4032 { 4033 struct mwl8k_cmd_bastream *cmd; 4034 4035 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4036 if (cmd == NULL) 4037 return; 4038 4039 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4040 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4041 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); 4042 4043 cmd->destroy_params.ba_context = cpu_to_le32(idx); 4044 mwl8k_post_cmd(hw, &cmd->header); 4045 4046 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); 4047 4048 kfree(cmd); 4049 } 4050 4051 /* 4052 * CMD_SET_NEW_STN. 4053 */ 4054 struct mwl8k_cmd_set_new_stn { 4055 struct mwl8k_cmd_pkt header; 4056 __le16 aid; 4057 __u8 mac_addr[6]; 4058 __le16 stn_id; 4059 __le16 action; 4060 __le16 rsvd; 4061 __le32 legacy_rates; 4062 __u8 ht_rates[4]; 4063 __le16 cap_info; 4064 __le16 ht_capabilities_info; 4065 __u8 mac_ht_param_info; 4066 __u8 rev; 4067 __u8 control_channel; 4068 __u8 add_channel; 4069 __le16 op_mode; 4070 __le16 stbc; 4071 __u8 add_qos_info; 4072 __u8 is_qos_sta; 4073 __le32 fw_sta_ptr; 4074 } __packed; 4075 4076 #define MWL8K_STA_ACTION_ADD 0 4077 #define MWL8K_STA_ACTION_REMOVE 2 4078 4079 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, 4080 struct ieee80211_vif *vif, 4081 struct ieee80211_sta *sta) 4082 { 4083 struct mwl8k_cmd_set_new_stn *cmd; 4084 u32 rates; 4085 int rc; 4086 4087 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4088 if (cmd == NULL) 4089 return -ENOMEM; 4090 4091 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4092 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4093 cmd->aid = cpu_to_le16(sta->aid); 4094 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); 4095 cmd->stn_id = cpu_to_le16(sta->aid); 4096 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); 4097 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4098 rates = sta->supp_rates[NL80211_BAND_2GHZ]; 4099 else 4100 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; 4101 cmd->legacy_rates = cpu_to_le32(rates); 4102 if (sta->ht_cap.ht_supported) { 4103 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0]; 4104 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1]; 4105 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2]; 4106 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3]; 4107 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap); 4108 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) | 4109 ((sta->ht_cap.ampdu_density & 7) << 2); 4110 cmd->is_qos_sta = 1; 4111 } 4112 4113 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4114 kfree(cmd); 4115 4116 return rc; 4117 } 4118 4119 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, 4120 struct ieee80211_vif *vif) 4121 { 4122 struct mwl8k_cmd_set_new_stn *cmd; 4123 int rc; 4124 4125 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4126 if (cmd == NULL) 4127 return -ENOMEM; 4128 4129 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4130 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4131 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); 4132 4133 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4134 kfree(cmd); 4135 4136 return rc; 4137 } 4138 4139 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, 4140 struct ieee80211_vif *vif, u8 *addr) 4141 { 4142 struct mwl8k_cmd_set_new_stn *cmd; 4143 struct mwl8k_priv *priv = hw->priv; 4144 int rc, i; 4145 u8 idx; 4146 4147 spin_lock(&priv->stream_lock); 4148 /* Destroy any active ampdu streams for this sta */ 4149 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 4150 struct mwl8k_ampdu_stream *s; 4151 s = &priv->ampdu[i]; 4152 if (s->state != AMPDU_NO_STREAM) { 4153 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { 4154 if (s->state == AMPDU_STREAM_ACTIVE) { 4155 idx = s->idx; 4156 spin_unlock(&priv->stream_lock); 4157 mwl8k_destroy_ba(hw, idx); 4158 spin_lock(&priv->stream_lock); 4159 } else if (s->state == AMPDU_STREAM_NEW) { 4160 mwl8k_remove_stream(hw, s); 4161 } 4162 } 4163 } 4164 } 4165 4166 spin_unlock(&priv->stream_lock); 4167 4168 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4169 if (cmd == NULL) 4170 return -ENOMEM; 4171 4172 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4173 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4174 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4175 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); 4176 4177 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4178 kfree(cmd); 4179 4180 return rc; 4181 } 4182 4183 /* 4184 * CMD_UPDATE_ENCRYPTION. 4185 */ 4186 4187 #define MAX_ENCR_KEY_LENGTH 16 4188 #define MIC_KEY_LENGTH 8 4189 4190 struct mwl8k_cmd_update_encryption { 4191 struct mwl8k_cmd_pkt header; 4192 4193 __le32 action; 4194 __le32 reserved; 4195 __u8 mac_addr[6]; 4196 __u8 encr_type; 4197 4198 } __packed; 4199 4200 struct mwl8k_cmd_set_key { 4201 struct mwl8k_cmd_pkt header; 4202 4203 __le32 action; 4204 __le32 reserved; 4205 __le16 length; 4206 __le16 key_type_id; 4207 __le32 key_info; 4208 __le32 key_id; 4209 __le16 key_len; 4210 __u8 key_material[MAX_ENCR_KEY_LENGTH]; 4211 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; 4212 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; 4213 __le16 tkip_rsc_low; 4214 __le32 tkip_rsc_high; 4215 __le16 tkip_tsc_low; 4216 __le32 tkip_tsc_high; 4217 __u8 mac_addr[6]; 4218 } __packed; 4219 4220 enum { 4221 MWL8K_ENCR_ENABLE, 4222 MWL8K_ENCR_SET_KEY, 4223 MWL8K_ENCR_REMOVE_KEY, 4224 MWL8K_ENCR_SET_GROUP_KEY, 4225 }; 4226 4227 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 4228 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 4229 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 4230 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 4231 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 4232 4233 enum { 4234 MWL8K_ALG_WEP, 4235 MWL8K_ALG_TKIP, 4236 MWL8K_ALG_CCMP, 4237 }; 4238 4239 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 4240 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 4241 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 4242 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 4243 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 4244 4245 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, 4246 struct ieee80211_vif *vif, 4247 u8 *addr, 4248 u8 encr_type) 4249 { 4250 struct mwl8k_cmd_update_encryption *cmd; 4251 int rc; 4252 4253 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4254 if (cmd == NULL) 4255 return -ENOMEM; 4256 4257 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4258 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4259 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); 4260 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4261 cmd->encr_type = encr_type; 4262 4263 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4264 kfree(cmd); 4265 4266 return rc; 4267 } 4268 4269 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, 4270 u8 *addr, 4271 struct ieee80211_key_conf *key) 4272 { 4273 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4274 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4275 cmd->length = cpu_to_le16(sizeof(*cmd) - 4276 offsetof(struct mwl8k_cmd_set_key, length)); 4277 cmd->key_id = cpu_to_le32(key->keyidx); 4278 cmd->key_len = cpu_to_le16(key->keylen); 4279 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4280 4281 switch (key->cipher) { 4282 case WLAN_CIPHER_SUITE_WEP40: 4283 case WLAN_CIPHER_SUITE_WEP104: 4284 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); 4285 if (key->keyidx == 0) 4286 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); 4287 4288 break; 4289 case WLAN_CIPHER_SUITE_TKIP: 4290 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); 4291 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4292 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4293 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4294 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID 4295 | MWL8K_KEY_FLAG_TSC_VALID); 4296 break; 4297 case WLAN_CIPHER_SUITE_CCMP: 4298 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); 4299 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4300 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4301 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4302 break; 4303 default: 4304 return -ENOTSUPP; 4305 } 4306 4307 return 0; 4308 } 4309 4310 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, 4311 struct ieee80211_vif *vif, 4312 u8 *addr, 4313 struct ieee80211_key_conf *key) 4314 { 4315 struct mwl8k_cmd_set_key *cmd; 4316 int rc; 4317 int keymlen; 4318 u32 action; 4319 u8 idx; 4320 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4321 4322 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4323 if (cmd == NULL) 4324 return -ENOMEM; 4325 4326 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4327 if (rc < 0) 4328 goto done; 4329 4330 idx = key->keyidx; 4331 4332 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4333 action = MWL8K_ENCR_SET_KEY; 4334 else 4335 action = MWL8K_ENCR_SET_GROUP_KEY; 4336 4337 switch (key->cipher) { 4338 case WLAN_CIPHER_SUITE_WEP40: 4339 case WLAN_CIPHER_SUITE_WEP104: 4340 if (!mwl8k_vif->wep_key_conf[idx].enabled) { 4341 memcpy(mwl8k_vif->wep_key_conf[idx].key, key, 4342 sizeof(*key) + key->keylen); 4343 mwl8k_vif->wep_key_conf[idx].enabled = 1; 4344 } 4345 4346 keymlen = key->keylen; 4347 action = MWL8K_ENCR_SET_KEY; 4348 break; 4349 case WLAN_CIPHER_SUITE_TKIP: 4350 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; 4351 break; 4352 case WLAN_CIPHER_SUITE_CCMP: 4353 keymlen = key->keylen; 4354 break; 4355 default: 4356 rc = -ENOTSUPP; 4357 goto done; 4358 } 4359 4360 memcpy(cmd->key_material, key->key, keymlen); 4361 cmd->action = cpu_to_le32(action); 4362 4363 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4364 done: 4365 kfree(cmd); 4366 4367 return rc; 4368 } 4369 4370 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, 4371 struct ieee80211_vif *vif, 4372 u8 *addr, 4373 struct ieee80211_key_conf *key) 4374 { 4375 struct mwl8k_cmd_set_key *cmd; 4376 int rc; 4377 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4378 4379 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4380 if (cmd == NULL) 4381 return -ENOMEM; 4382 4383 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4384 if (rc < 0) 4385 goto done; 4386 4387 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || 4388 key->cipher == WLAN_CIPHER_SUITE_WEP104) 4389 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; 4390 4391 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); 4392 4393 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4394 done: 4395 kfree(cmd); 4396 4397 return rc; 4398 } 4399 4400 static int mwl8k_set_key(struct ieee80211_hw *hw, 4401 enum set_key_cmd cmd_param, 4402 struct ieee80211_vif *vif, 4403 struct ieee80211_sta *sta, 4404 struct ieee80211_key_conf *key) 4405 { 4406 int rc = 0; 4407 u8 encr_type; 4408 u8 *addr; 4409 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4410 struct mwl8k_priv *priv = hw->priv; 4411 4412 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) 4413 return -EOPNOTSUPP; 4414 4415 if (sta == NULL) 4416 addr = vif->addr; 4417 else 4418 addr = sta->addr; 4419 4420 if (cmd_param == SET_KEY) { 4421 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); 4422 if (rc) 4423 goto out; 4424 4425 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) 4426 || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) 4427 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; 4428 else 4429 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; 4430 4431 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, 4432 encr_type); 4433 if (rc) 4434 goto out; 4435 4436 mwl8k_vif->is_hw_crypto_enabled = true; 4437 4438 } else { 4439 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); 4440 4441 if (rc) 4442 goto out; 4443 } 4444 out: 4445 return rc; 4446 } 4447 4448 /* 4449 * CMD_UPDATE_STADB. 4450 */ 4451 struct ewc_ht_info { 4452 __le16 control1; 4453 __le16 control2; 4454 __le16 control3; 4455 } __packed; 4456 4457 struct peer_capability_info { 4458 /* Peer type - AP vs. STA. */ 4459 __u8 peer_type; 4460 4461 /* Basic 802.11 capabilities from assoc resp. */ 4462 __le16 basic_caps; 4463 4464 /* Set if peer supports 802.11n high throughput (HT). */ 4465 __u8 ht_support; 4466 4467 /* Valid if HT is supported. */ 4468 __le16 ht_caps; 4469 __u8 extended_ht_caps; 4470 struct ewc_ht_info ewc_info; 4471 4472 /* Legacy rate table. Intersection of our rates and peer rates. */ 4473 __u8 legacy_rates[12]; 4474 4475 /* HT rate table. Intersection of our rates and peer rates. */ 4476 __u8 ht_rates[16]; 4477 __u8 pad[16]; 4478 4479 /* If set, interoperability mode, no proprietary extensions. */ 4480 __u8 interop; 4481 __u8 pad2; 4482 __u8 station_id; 4483 __le16 amsdu_enabled; 4484 } __packed; 4485 4486 struct mwl8k_cmd_update_stadb { 4487 struct mwl8k_cmd_pkt header; 4488 4489 /* See STADB_ACTION_TYPE */ 4490 __le32 action; 4491 4492 /* Peer MAC address */ 4493 __u8 peer_addr[ETH_ALEN]; 4494 4495 __le32 reserved; 4496 4497 /* Peer info - valid during add/update. */ 4498 struct peer_capability_info peer_info; 4499 } __packed; 4500 4501 #define MWL8K_STA_DB_MODIFY_ENTRY 1 4502 #define MWL8K_STA_DB_DEL_ENTRY 2 4503 4504 /* Peer Entry flags - used to define the type of the peer node */ 4505 #define MWL8K_PEER_TYPE_ACCESSPOINT 2 4506 4507 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, 4508 struct ieee80211_vif *vif, 4509 struct ieee80211_sta *sta) 4510 { 4511 struct mwl8k_cmd_update_stadb *cmd; 4512 struct peer_capability_info *p; 4513 u32 rates; 4514 int rc; 4515 4516 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4517 if (cmd == NULL) 4518 return -ENOMEM; 4519 4520 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4521 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4522 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); 4523 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); 4524 4525 p = &cmd->peer_info; 4526 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; 4527 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); 4528 p->ht_support = sta->ht_cap.ht_supported; 4529 p->ht_caps = cpu_to_le16(sta->ht_cap.cap); 4530 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) | 4531 ((sta->ht_cap.ampdu_density & 7) << 2); 4532 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4533 rates = sta->supp_rates[NL80211_BAND_2GHZ]; 4534 else 4535 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; 4536 legacy_rate_mask_to_array(p->legacy_rates, rates); 4537 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16); 4538 p->interop = 1; 4539 p->amsdu_enabled = 0; 4540 4541 rc = mwl8k_post_cmd(hw, &cmd->header); 4542 if (!rc) 4543 rc = p->station_id; 4544 kfree(cmd); 4545 4546 return rc; 4547 } 4548 4549 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, 4550 struct ieee80211_vif *vif, u8 *addr) 4551 { 4552 struct mwl8k_cmd_update_stadb *cmd; 4553 int rc; 4554 4555 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4556 if (cmd == NULL) 4557 return -ENOMEM; 4558 4559 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4560 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4561 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); 4562 memcpy(cmd->peer_addr, addr, ETH_ALEN); 4563 4564 rc = mwl8k_post_cmd(hw, &cmd->header); 4565 kfree(cmd); 4566 4567 return rc; 4568 } 4569 4570 4571 /* 4572 * Interrupt handling. 4573 */ 4574 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) 4575 { 4576 struct ieee80211_hw *hw = dev_id; 4577 struct mwl8k_priv *priv = hw->priv; 4578 u32 status; 4579 4580 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4581 if (!status) 4582 return IRQ_NONE; 4583 4584 if (status & MWL8K_A2H_INT_TX_DONE) { 4585 status &= ~MWL8K_A2H_INT_TX_DONE; 4586 tasklet_schedule(&priv->poll_tx_task); 4587 } 4588 4589 if (status & MWL8K_A2H_INT_RX_READY) { 4590 status &= ~MWL8K_A2H_INT_RX_READY; 4591 tasklet_schedule(&priv->poll_rx_task); 4592 } 4593 4594 if (status & MWL8K_A2H_INT_BA_WATCHDOG) { 4595 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, 4596 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4597 4598 atomic_inc(&priv->watchdog_event_pending); 4599 status &= ~MWL8K_A2H_INT_BA_WATCHDOG; 4600 ieee80211_queue_work(hw, &priv->watchdog_ba_handle); 4601 } 4602 4603 if (status) 4604 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4605 4606 if (status & MWL8K_A2H_INT_OPC_DONE) { 4607 if (priv->hostcmd_wait != NULL) 4608 complete(priv->hostcmd_wait); 4609 } 4610 4611 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { 4612 if (!mutex_is_locked(&priv->fw_mutex) && 4613 priv->radio_on && priv->pending_tx_pkts) 4614 mwl8k_tx_start(priv); 4615 } 4616 4617 return IRQ_HANDLED; 4618 } 4619 4620 static void mwl8k_tx_poll(unsigned long data) 4621 { 4622 struct ieee80211_hw *hw = (struct ieee80211_hw *)data; 4623 struct mwl8k_priv *priv = hw->priv; 4624 int limit; 4625 int i; 4626 4627 limit = 32; 4628 4629 spin_lock_bh(&priv->tx_lock); 4630 4631 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4632 limit -= mwl8k_txq_reclaim(hw, i, limit, 0); 4633 4634 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { 4635 complete(priv->tx_wait); 4636 priv->tx_wait = NULL; 4637 } 4638 4639 spin_unlock_bh(&priv->tx_lock); 4640 4641 if (limit) { 4642 writel(~MWL8K_A2H_INT_TX_DONE, 4643 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4644 } else { 4645 tasklet_schedule(&priv->poll_tx_task); 4646 } 4647 } 4648 4649 static void mwl8k_rx_poll(unsigned long data) 4650 { 4651 struct ieee80211_hw *hw = (struct ieee80211_hw *)data; 4652 struct mwl8k_priv *priv = hw->priv; 4653 int limit; 4654 4655 limit = 32; 4656 limit -= rxq_process(hw, 0, limit); 4657 limit -= rxq_refill(hw, 0, limit); 4658 4659 if (limit) { 4660 writel(~MWL8K_A2H_INT_RX_READY, 4661 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4662 } else { 4663 tasklet_schedule(&priv->poll_rx_task); 4664 } 4665 } 4666 4667 4668 /* 4669 * Core driver operations. 4670 */ 4671 static void mwl8k_tx(struct ieee80211_hw *hw, 4672 struct ieee80211_tx_control *control, 4673 struct sk_buff *skb) 4674 { 4675 struct mwl8k_priv *priv = hw->priv; 4676 int index = skb_get_queue_mapping(skb); 4677 4678 if (!priv->radio_on) { 4679 wiphy_debug(hw->wiphy, 4680 "dropped TX frame since radio disabled\n"); 4681 dev_kfree_skb(skb); 4682 return; 4683 } 4684 4685 mwl8k_txq_xmit(hw, index, control->sta, skb); 4686 } 4687 4688 static int mwl8k_start(struct ieee80211_hw *hw) 4689 { 4690 struct mwl8k_priv *priv = hw->priv; 4691 int rc; 4692 4693 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 4694 IRQF_SHARED, MWL8K_NAME, hw); 4695 if (rc) { 4696 priv->irq = -1; 4697 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 4698 return -EIO; 4699 } 4700 priv->irq = priv->pdev->irq; 4701 4702 /* Enable TX reclaim and RX tasklets. */ 4703 tasklet_enable(&priv->poll_tx_task); 4704 tasklet_enable(&priv->poll_rx_task); 4705 4706 /* Enable interrupts */ 4707 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4708 iowrite32(MWL8K_A2H_EVENTS, 4709 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4710 4711 rc = mwl8k_fw_lock(hw); 4712 if (!rc) { 4713 rc = mwl8k_cmd_radio_enable(hw); 4714 4715 if (!priv->ap_fw) { 4716 if (!rc) 4717 rc = mwl8k_cmd_enable_sniffer(hw, 0); 4718 4719 if (!rc) 4720 rc = mwl8k_cmd_set_pre_scan(hw); 4721 4722 if (!rc) 4723 rc = mwl8k_cmd_set_post_scan(hw, 4724 "\x00\x00\x00\x00\x00\x00"); 4725 } 4726 4727 if (!rc) 4728 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); 4729 4730 if (!rc) 4731 rc = mwl8k_cmd_set_wmm_mode(hw, 0); 4732 4733 mwl8k_fw_unlock(hw); 4734 } 4735 4736 if (rc) { 4737 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4738 free_irq(priv->pdev->irq, hw); 4739 priv->irq = -1; 4740 tasklet_disable(&priv->poll_tx_task); 4741 tasklet_disable(&priv->poll_rx_task); 4742 } else { 4743 ieee80211_wake_queues(hw); 4744 } 4745 4746 return rc; 4747 } 4748 4749 static void mwl8k_stop(struct ieee80211_hw *hw) 4750 { 4751 struct mwl8k_priv *priv = hw->priv; 4752 int i; 4753 4754 if (!priv->hw_restart_in_progress) 4755 mwl8k_cmd_radio_disable(hw); 4756 4757 ieee80211_stop_queues(hw); 4758 4759 /* Disable interrupts */ 4760 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4761 if (priv->irq != -1) { 4762 free_irq(priv->pdev->irq, hw); 4763 priv->irq = -1; 4764 } 4765 4766 /* Stop finalize join worker */ 4767 cancel_work_sync(&priv->finalize_join_worker); 4768 cancel_work_sync(&priv->watchdog_ba_handle); 4769 if (priv->beacon_skb != NULL) 4770 dev_kfree_skb(priv->beacon_skb); 4771 4772 /* Stop TX reclaim and RX tasklets. */ 4773 tasklet_disable(&priv->poll_tx_task); 4774 tasklet_disable(&priv->poll_rx_task); 4775 4776 /* Return all skbs to mac80211 */ 4777 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4778 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 4779 } 4780 4781 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); 4782 4783 static int mwl8k_add_interface(struct ieee80211_hw *hw, 4784 struct ieee80211_vif *vif) 4785 { 4786 struct mwl8k_priv *priv = hw->priv; 4787 struct mwl8k_vif *mwl8k_vif; 4788 u32 macids_supported; 4789 int macid, rc; 4790 struct mwl8k_device_info *di; 4791 4792 /* 4793 * Reject interface creation if sniffer mode is active, as 4794 * STA operation is mutually exclusive with hardware sniffer 4795 * mode. (Sniffer mode is only used on STA firmware.) 4796 */ 4797 if (priv->sniffer_enabled) { 4798 wiphy_info(hw->wiphy, 4799 "unable to create STA interface because sniffer mode is enabled\n"); 4800 return -EINVAL; 4801 } 4802 4803 di = priv->device_info; 4804 switch (vif->type) { 4805 case NL80211_IFTYPE_AP: 4806 if (!priv->ap_fw && di->fw_image_ap) { 4807 /* we must load the ap fw to meet this request */ 4808 if (!list_empty(&priv->vif_list)) 4809 return -EBUSY; 4810 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4811 if (rc) 4812 return rc; 4813 } 4814 macids_supported = priv->ap_macids_supported; 4815 break; 4816 case NL80211_IFTYPE_STATION: 4817 if (priv->ap_fw && di->fw_image_sta) { 4818 if (!list_empty(&priv->vif_list)) { 4819 wiphy_warn(hw->wiphy, "AP interface is running.\n" 4820 "Adding STA interface for WDS"); 4821 } else { 4822 /* we must load the sta fw to 4823 * meet this request. 4824 */ 4825 rc = mwl8k_reload_firmware(hw, 4826 di->fw_image_sta); 4827 if (rc) 4828 return rc; 4829 } 4830 } 4831 macids_supported = priv->sta_macids_supported; 4832 break; 4833 default: 4834 return -EINVAL; 4835 } 4836 4837 macid = ffs(macids_supported & ~priv->macids_used); 4838 if (!macid--) 4839 return -EBUSY; 4840 4841 /* Setup driver private area. */ 4842 mwl8k_vif = MWL8K_VIF(vif); 4843 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); 4844 mwl8k_vif->vif = vif; 4845 mwl8k_vif->macid = macid; 4846 mwl8k_vif->seqno = 0; 4847 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); 4848 mwl8k_vif->is_hw_crypto_enabled = false; 4849 4850 /* Set the mac address. */ 4851 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); 4852 4853 if (vif->type == NL80211_IFTYPE_AP) 4854 mwl8k_cmd_set_new_stn_add_self(hw, vif); 4855 4856 priv->macids_used |= 1 << mwl8k_vif->macid; 4857 list_add_tail(&mwl8k_vif->list, &priv->vif_list); 4858 4859 return 0; 4860 } 4861 4862 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) 4863 { 4864 /* Has ieee80211_restart_hw re-added the removed interfaces? */ 4865 if (!priv->macids_used) 4866 return; 4867 4868 priv->macids_used &= ~(1 << vif->macid); 4869 list_del(&vif->list); 4870 } 4871 4872 static void mwl8k_remove_interface(struct ieee80211_hw *hw, 4873 struct ieee80211_vif *vif) 4874 { 4875 struct mwl8k_priv *priv = hw->priv; 4876 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4877 4878 if (vif->type == NL80211_IFTYPE_AP) 4879 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); 4880 4881 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); 4882 4883 mwl8k_remove_vif(priv, mwl8k_vif); 4884 } 4885 4886 static void mwl8k_hw_restart_work(struct work_struct *work) 4887 { 4888 struct mwl8k_priv *priv = 4889 container_of(work, struct mwl8k_priv, fw_reload); 4890 struct ieee80211_hw *hw = priv->hw; 4891 struct mwl8k_device_info *di; 4892 int rc; 4893 4894 /* If some command is waiting for a response, clear it */ 4895 if (priv->hostcmd_wait != NULL) { 4896 complete(priv->hostcmd_wait); 4897 priv->hostcmd_wait = NULL; 4898 } 4899 4900 priv->hw_restart_owner = current; 4901 di = priv->device_info; 4902 mwl8k_fw_lock(hw); 4903 4904 if (priv->ap_fw) 4905 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4906 else 4907 rc = mwl8k_reload_firmware(hw, di->fw_image_sta); 4908 4909 if (rc) 4910 goto fail; 4911 4912 priv->hw_restart_owner = NULL; 4913 priv->hw_restart_in_progress = false; 4914 4915 /* 4916 * This unlock will wake up the queues and 4917 * also opens the command path for other 4918 * commands 4919 */ 4920 mwl8k_fw_unlock(hw); 4921 4922 ieee80211_restart_hw(hw); 4923 4924 wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); 4925 4926 return; 4927 fail: 4928 mwl8k_fw_unlock(hw); 4929 4930 wiphy_err(hw->wiphy, "Firmware restart failed\n"); 4931 } 4932 4933 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) 4934 { 4935 struct ieee80211_conf *conf = &hw->conf; 4936 struct mwl8k_priv *priv = hw->priv; 4937 int rc; 4938 4939 rc = mwl8k_fw_lock(hw); 4940 if (rc) 4941 return rc; 4942 4943 if (conf->flags & IEEE80211_CONF_IDLE) 4944 rc = mwl8k_cmd_radio_disable(hw); 4945 else 4946 rc = mwl8k_cmd_radio_enable(hw); 4947 if (rc) 4948 goto out; 4949 4950 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 4951 rc = mwl8k_cmd_set_rf_channel(hw, conf); 4952 if (rc) 4953 goto out; 4954 } 4955 4956 if (conf->power_level > 18) 4957 conf->power_level = 18; 4958 4959 if (priv->ap_fw) { 4960 4961 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { 4962 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); 4963 if (rc) 4964 goto out; 4965 } 4966 4967 4968 } else { 4969 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); 4970 if (rc) 4971 goto out; 4972 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); 4973 } 4974 4975 out: 4976 mwl8k_fw_unlock(hw); 4977 4978 return rc; 4979 } 4980 4981 static void 4982 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 4983 struct ieee80211_bss_conf *info, u32 changed) 4984 { 4985 struct mwl8k_priv *priv = hw->priv; 4986 u32 ap_legacy_rates = 0; 4987 u8 ap_mcs_rates[16]; 4988 int rc; 4989 4990 if (mwl8k_fw_lock(hw)) 4991 return; 4992 4993 /* 4994 * No need to capture a beacon if we're no longer associated. 4995 */ 4996 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc) 4997 priv->capture_beacon = false; 4998 4999 /* 5000 * Get the AP's legacy and MCS rates. 5001 */ 5002 if (vif->bss_conf.assoc) { 5003 struct ieee80211_sta *ap; 5004 5005 rcu_read_lock(); 5006 5007 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); 5008 if (ap == NULL) { 5009 rcu_read_unlock(); 5010 goto out; 5011 } 5012 5013 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { 5014 ap_legacy_rates = ap->supp_rates[NL80211_BAND_2GHZ]; 5015 } else { 5016 ap_legacy_rates = 5017 ap->supp_rates[NL80211_BAND_5GHZ] << 5; 5018 } 5019 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16); 5020 5021 rcu_read_unlock(); 5022 5023 if (changed & BSS_CHANGED_ASSOC) { 5024 if (!priv->ap_fw) { 5025 rc = mwl8k_cmd_set_rate(hw, vif, 5026 ap_legacy_rates, 5027 ap_mcs_rates); 5028 if (rc) 5029 goto out; 5030 5031 rc = mwl8k_cmd_use_fixed_rate_sta(hw); 5032 if (rc) 5033 goto out; 5034 } else { 5035 int idx; 5036 int rate; 5037 5038 /* Use AP firmware specific rate command. 5039 */ 5040 idx = ffs(vif->bss_conf.basic_rates); 5041 if (idx) 5042 idx--; 5043 5044 if (hw->conf.chandef.chan->band == 5045 NL80211_BAND_2GHZ) 5046 rate = mwl8k_rates_24[idx].hw_value; 5047 else 5048 rate = mwl8k_rates_50[idx].hw_value; 5049 5050 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5051 } 5052 } 5053 } 5054 5055 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5056 rc = mwl8k_set_radio_preamble(hw, 5057 vif->bss_conf.use_short_preamble); 5058 if (rc) 5059 goto out; 5060 } 5061 5062 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { 5063 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); 5064 if (rc) 5065 goto out; 5066 } 5067 5068 if (vif->bss_conf.assoc && !priv->ap_fw && 5069 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | 5070 BSS_CHANGED_HT))) { 5071 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); 5072 if (rc) 5073 goto out; 5074 } 5075 5076 if (vif->bss_conf.assoc && 5077 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { 5078 /* 5079 * Finalize the join. Tell rx handler to process 5080 * next beacon from our BSSID. 5081 */ 5082 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); 5083 priv->capture_beacon = true; 5084 } 5085 5086 out: 5087 mwl8k_fw_unlock(hw); 5088 } 5089 5090 static void 5091 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5092 struct ieee80211_bss_conf *info, u32 changed) 5093 { 5094 int rc; 5095 5096 if (mwl8k_fw_lock(hw)) 5097 return; 5098 5099 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5100 rc = mwl8k_set_radio_preamble(hw, 5101 vif->bss_conf.use_short_preamble); 5102 if (rc) 5103 goto out; 5104 } 5105 5106 if (changed & BSS_CHANGED_BASIC_RATES) { 5107 int idx; 5108 int rate; 5109 5110 /* 5111 * Use lowest supported basic rate for multicasts 5112 * and management frames (such as probe responses -- 5113 * beacons will always go out at 1 Mb/s). 5114 */ 5115 idx = ffs(vif->bss_conf.basic_rates); 5116 if (idx) 5117 idx--; 5118 5119 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 5120 rate = mwl8k_rates_24[idx].hw_value; 5121 else 5122 rate = mwl8k_rates_50[idx].hw_value; 5123 5124 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5125 } 5126 5127 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { 5128 struct sk_buff *skb; 5129 5130 skb = ieee80211_beacon_get(hw, vif); 5131 if (skb != NULL) { 5132 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); 5133 kfree_skb(skb); 5134 } 5135 } 5136 5137 if (changed & BSS_CHANGED_BEACON_ENABLED) 5138 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); 5139 5140 out: 5141 mwl8k_fw_unlock(hw); 5142 } 5143 5144 static void 5145 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5146 struct ieee80211_bss_conf *info, u32 changed) 5147 { 5148 if (vif->type == NL80211_IFTYPE_STATION) 5149 mwl8k_bss_info_changed_sta(hw, vif, info, changed); 5150 if (vif->type == NL80211_IFTYPE_AP) 5151 mwl8k_bss_info_changed_ap(hw, vif, info, changed); 5152 } 5153 5154 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, 5155 struct netdev_hw_addr_list *mc_list) 5156 { 5157 struct mwl8k_cmd_pkt *cmd; 5158 5159 /* 5160 * Synthesize and return a command packet that programs the 5161 * hardware multicast address filter. At this point we don't 5162 * know whether FIF_ALLMULTI is being requested, but if it is, 5163 * we'll end up throwing this packet away and creating a new 5164 * one in mwl8k_configure_filter(). 5165 */ 5166 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); 5167 5168 return (unsigned long)cmd; 5169 } 5170 5171 static int 5172 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, 5173 unsigned int changed_flags, 5174 unsigned int *total_flags) 5175 { 5176 struct mwl8k_priv *priv = hw->priv; 5177 5178 /* 5179 * Hardware sniffer mode is mutually exclusive with STA 5180 * operation, so refuse to enable sniffer mode if a STA 5181 * interface is active. 5182 */ 5183 if (!list_empty(&priv->vif_list)) { 5184 if (net_ratelimit()) 5185 wiphy_info(hw->wiphy, 5186 "not enabling sniffer mode because STA interface is active\n"); 5187 return 0; 5188 } 5189 5190 if (!priv->sniffer_enabled) { 5191 if (mwl8k_cmd_enable_sniffer(hw, 1)) 5192 return 0; 5193 priv->sniffer_enabled = true; 5194 } 5195 5196 *total_flags &= FIF_ALLMULTI | 5197 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | 5198 FIF_OTHER_BSS; 5199 5200 return 1; 5201 } 5202 5203 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) 5204 { 5205 if (!list_empty(&priv->vif_list)) 5206 return list_entry(priv->vif_list.next, struct mwl8k_vif, list); 5207 5208 return NULL; 5209 } 5210 5211 static void mwl8k_configure_filter(struct ieee80211_hw *hw, 5212 unsigned int changed_flags, 5213 unsigned int *total_flags, 5214 u64 multicast) 5215 { 5216 struct mwl8k_priv *priv = hw->priv; 5217 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; 5218 5219 /* 5220 * AP firmware doesn't allow fine-grained control over 5221 * the receive filter. 5222 */ 5223 if (priv->ap_fw) { 5224 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5225 kfree(cmd); 5226 return; 5227 } 5228 5229 /* 5230 * Enable hardware sniffer mode if FIF_CONTROL or 5231 * FIF_OTHER_BSS is requested. 5232 */ 5233 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && 5234 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { 5235 kfree(cmd); 5236 return; 5237 } 5238 5239 /* Clear unsupported feature flags */ 5240 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5241 5242 if (mwl8k_fw_lock(hw)) { 5243 kfree(cmd); 5244 return; 5245 } 5246 5247 if (priv->sniffer_enabled) { 5248 mwl8k_cmd_enable_sniffer(hw, 0); 5249 priv->sniffer_enabled = false; 5250 } 5251 5252 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 5253 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { 5254 /* 5255 * Disable the BSS filter. 5256 */ 5257 mwl8k_cmd_set_pre_scan(hw); 5258 } else { 5259 struct mwl8k_vif *mwl8k_vif; 5260 const u8 *bssid; 5261 5262 /* 5263 * Enable the BSS filter. 5264 * 5265 * If there is an active STA interface, use that 5266 * interface's BSSID, otherwise use a dummy one 5267 * (where the OUI part needs to be nonzero for 5268 * the BSSID to be accepted by POST_SCAN). 5269 */ 5270 mwl8k_vif = mwl8k_first_vif(priv); 5271 if (mwl8k_vif != NULL) 5272 bssid = mwl8k_vif->vif->bss_conf.bssid; 5273 else 5274 bssid = "\x01\x00\x00\x00\x00\x00"; 5275 5276 mwl8k_cmd_set_post_scan(hw, bssid); 5277 } 5278 } 5279 5280 /* 5281 * If FIF_ALLMULTI is being requested, throw away the command 5282 * packet that ->prepare_multicast() built and replace it with 5283 * a command packet that enables reception of all multicast 5284 * packets. 5285 */ 5286 if (*total_flags & FIF_ALLMULTI) { 5287 kfree(cmd); 5288 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); 5289 } 5290 5291 if (cmd != NULL) { 5292 mwl8k_post_cmd(hw, cmd); 5293 kfree(cmd); 5294 } 5295 5296 mwl8k_fw_unlock(hw); 5297 } 5298 5299 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 5300 { 5301 return mwl8k_cmd_set_rts_threshold(hw, value); 5302 } 5303 5304 static int mwl8k_sta_remove(struct ieee80211_hw *hw, 5305 struct ieee80211_vif *vif, 5306 struct ieee80211_sta *sta) 5307 { 5308 struct mwl8k_priv *priv = hw->priv; 5309 5310 if (priv->ap_fw) 5311 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); 5312 else 5313 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); 5314 } 5315 5316 static int mwl8k_sta_add(struct ieee80211_hw *hw, 5317 struct ieee80211_vif *vif, 5318 struct ieee80211_sta *sta) 5319 { 5320 struct mwl8k_priv *priv = hw->priv; 5321 int ret; 5322 int i; 5323 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 5324 struct ieee80211_key_conf *key; 5325 5326 if (!priv->ap_fw) { 5327 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); 5328 if (ret >= 0) { 5329 MWL8K_STA(sta)->peer_id = ret; 5330 if (sta->ht_cap.ht_supported) 5331 MWL8K_STA(sta)->is_ampdu_allowed = true; 5332 ret = 0; 5333 } 5334 5335 } else { 5336 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); 5337 } 5338 5339 for (i = 0; i < NUM_WEP_KEYS; i++) { 5340 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); 5341 if (mwl8k_vif->wep_key_conf[i].enabled) 5342 mwl8k_set_key(hw, SET_KEY, vif, sta, key); 5343 } 5344 return ret; 5345 } 5346 5347 static int mwl8k_conf_tx(struct ieee80211_hw *hw, 5348 struct ieee80211_vif *vif, u16 queue, 5349 const struct ieee80211_tx_queue_params *params) 5350 { 5351 struct mwl8k_priv *priv = hw->priv; 5352 int rc; 5353 5354 rc = mwl8k_fw_lock(hw); 5355 if (!rc) { 5356 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); 5357 memcpy(&priv->wmm_params[queue], params, sizeof(*params)); 5358 5359 if (!priv->wmm_enabled) 5360 rc = mwl8k_cmd_set_wmm_mode(hw, 1); 5361 5362 if (!rc) { 5363 int q = MWL8K_TX_WMM_QUEUES - 1 - queue; 5364 rc = mwl8k_cmd_set_edca_params(hw, q, 5365 params->cw_min, 5366 params->cw_max, 5367 params->aifs, 5368 params->txop); 5369 } 5370 5371 mwl8k_fw_unlock(hw); 5372 } 5373 5374 return rc; 5375 } 5376 5377 static int mwl8k_get_stats(struct ieee80211_hw *hw, 5378 struct ieee80211_low_level_stats *stats) 5379 { 5380 return mwl8k_cmd_get_stat(hw, stats); 5381 } 5382 5383 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, 5384 struct survey_info *survey) 5385 { 5386 struct mwl8k_priv *priv = hw->priv; 5387 struct ieee80211_conf *conf = &hw->conf; 5388 struct ieee80211_supported_band *sband; 5389 5390 if (priv->ap_fw) { 5391 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 5392 5393 if (sband && idx >= sband->n_channels) { 5394 idx -= sband->n_channels; 5395 sband = NULL; 5396 } 5397 5398 if (!sband) 5399 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 5400 5401 if (!sband || idx >= sband->n_channels) 5402 return -ENOENT; 5403 5404 memcpy(survey, &priv->survey[idx], sizeof(*survey)); 5405 survey->channel = &sband->channels[idx]; 5406 5407 return 0; 5408 } 5409 5410 if (idx != 0) 5411 return -ENOENT; 5412 5413 survey->channel = conf->chandef.chan; 5414 survey->filled = SURVEY_INFO_NOISE_DBM; 5415 survey->noise = priv->noise; 5416 5417 return 0; 5418 } 5419 5420 #define MAX_AMPDU_ATTEMPTS 5 5421 5422 static int 5423 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5424 struct ieee80211_ampdu_params *params) 5425 { 5426 struct ieee80211_sta *sta = params->sta; 5427 enum ieee80211_ampdu_mlme_action action = params->action; 5428 u16 tid = params->tid; 5429 u16 *ssn = ¶ms->ssn; 5430 u8 buf_size = params->buf_size; 5431 int i, rc = 0; 5432 struct mwl8k_priv *priv = hw->priv; 5433 struct mwl8k_ampdu_stream *stream; 5434 u8 *addr = sta->addr, idx; 5435 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 5436 5437 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) 5438 return -ENOTSUPP; 5439 5440 spin_lock(&priv->stream_lock); 5441 stream = mwl8k_lookup_stream(hw, addr, tid); 5442 5443 switch (action) { 5444 case IEEE80211_AMPDU_RX_START: 5445 case IEEE80211_AMPDU_RX_STOP: 5446 break; 5447 case IEEE80211_AMPDU_TX_START: 5448 /* By the time we get here the hw queues may contain outgoing 5449 * packets for this RA/TID that are not part of this BA 5450 * session. The hw will assign sequence numbers to these 5451 * packets as they go out. So if we query the hw for its next 5452 * sequence number and use that for the SSN here, it may end up 5453 * being wrong, which will lead to sequence number mismatch at 5454 * the recipient. To avoid this, we reset the sequence number 5455 * to O for the first MPDU in this BA stream. 5456 */ 5457 *ssn = 0; 5458 if (stream == NULL) { 5459 /* This means that somebody outside this driver called 5460 * ieee80211_start_tx_ba_session. This is unexpected 5461 * because we do our own rate control. Just warn and 5462 * move on. 5463 */ 5464 wiphy_warn(hw->wiphy, "Unexpected call to %s. " 5465 "Proceeding anyway.\n", __func__); 5466 stream = mwl8k_add_stream(hw, sta, tid); 5467 } 5468 if (stream == NULL) { 5469 wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); 5470 rc = -EBUSY; 5471 break; 5472 } 5473 stream->state = AMPDU_STREAM_IN_PROGRESS; 5474 5475 /* Release the lock before we do the time consuming stuff */ 5476 spin_unlock(&priv->stream_lock); 5477 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { 5478 5479 /* Check if link is still valid */ 5480 if (!sta_info->is_ampdu_allowed) { 5481 spin_lock(&priv->stream_lock); 5482 mwl8k_remove_stream(hw, stream); 5483 spin_unlock(&priv->stream_lock); 5484 return -EBUSY; 5485 } 5486 5487 rc = mwl8k_check_ba(hw, stream, vif); 5488 5489 /* If HW restart is in progress mwl8k_post_cmd will 5490 * return -EBUSY. Avoid retrying mwl8k_check_ba in 5491 * such cases 5492 */ 5493 if (!rc || rc == -EBUSY) 5494 break; 5495 /* 5496 * HW queues take time to be flushed, give them 5497 * sufficient time 5498 */ 5499 5500 msleep(1000); 5501 } 5502 spin_lock(&priv->stream_lock); 5503 if (rc) { 5504 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" 5505 " attempts\n", tid, MAX_AMPDU_ATTEMPTS); 5506 mwl8k_remove_stream(hw, stream); 5507 rc = -EBUSY; 5508 break; 5509 } 5510 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); 5511 break; 5512 case IEEE80211_AMPDU_TX_STOP_CONT: 5513 case IEEE80211_AMPDU_TX_STOP_FLUSH: 5514 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 5515 if (stream) { 5516 if (stream->state == AMPDU_STREAM_ACTIVE) { 5517 idx = stream->idx; 5518 spin_unlock(&priv->stream_lock); 5519 mwl8k_destroy_ba(hw, idx); 5520 spin_lock(&priv->stream_lock); 5521 } 5522 mwl8k_remove_stream(hw, stream); 5523 } 5524 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); 5525 break; 5526 case IEEE80211_AMPDU_TX_OPERATIONAL: 5527 BUG_ON(stream == NULL); 5528 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); 5529 spin_unlock(&priv->stream_lock); 5530 rc = mwl8k_create_ba(hw, stream, buf_size, vif); 5531 spin_lock(&priv->stream_lock); 5532 if (!rc) 5533 stream->state = AMPDU_STREAM_ACTIVE; 5534 else { 5535 idx = stream->idx; 5536 spin_unlock(&priv->stream_lock); 5537 mwl8k_destroy_ba(hw, idx); 5538 spin_lock(&priv->stream_lock); 5539 wiphy_debug(hw->wiphy, 5540 "Failed adding stream for sta %pM tid %d\n", 5541 addr, tid); 5542 mwl8k_remove_stream(hw, stream); 5543 } 5544 break; 5545 5546 default: 5547 rc = -ENOTSUPP; 5548 } 5549 5550 spin_unlock(&priv->stream_lock); 5551 return rc; 5552 } 5553 5554 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, 5555 struct ieee80211_vif *vif, 5556 const u8 *mac_addr) 5557 { 5558 struct mwl8k_priv *priv = hw->priv; 5559 u8 tmp; 5560 5561 if (!priv->ap_fw) 5562 return; 5563 5564 /* clear all stats */ 5565 priv->channel_time = 0; 5566 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5567 ioread32(priv->regs + NOK_CCA_CNT_REG); 5568 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5569 5570 priv->sw_scan_start = true; 5571 } 5572 5573 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, 5574 struct ieee80211_vif *vif) 5575 { 5576 struct mwl8k_priv *priv = hw->priv; 5577 u8 tmp; 5578 5579 if (!priv->ap_fw) 5580 return; 5581 5582 priv->sw_scan_start = false; 5583 5584 /* clear all stats */ 5585 priv->channel_time = 0; 5586 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5587 ioread32(priv->regs + NOK_CCA_CNT_REG); 5588 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5589 } 5590 5591 static const struct ieee80211_ops mwl8k_ops = { 5592 .tx = mwl8k_tx, 5593 .start = mwl8k_start, 5594 .stop = mwl8k_stop, 5595 .add_interface = mwl8k_add_interface, 5596 .remove_interface = mwl8k_remove_interface, 5597 .config = mwl8k_config, 5598 .bss_info_changed = mwl8k_bss_info_changed, 5599 .prepare_multicast = mwl8k_prepare_multicast, 5600 .configure_filter = mwl8k_configure_filter, 5601 .set_key = mwl8k_set_key, 5602 .set_rts_threshold = mwl8k_set_rts_threshold, 5603 .sta_add = mwl8k_sta_add, 5604 .sta_remove = mwl8k_sta_remove, 5605 .conf_tx = mwl8k_conf_tx, 5606 .get_stats = mwl8k_get_stats, 5607 .get_survey = mwl8k_get_survey, 5608 .ampdu_action = mwl8k_ampdu_action, 5609 .sw_scan_start = mwl8k_sw_scan_start, 5610 .sw_scan_complete = mwl8k_sw_scan_complete, 5611 }; 5612 5613 static void mwl8k_finalize_join_worker(struct work_struct *work) 5614 { 5615 struct mwl8k_priv *priv = 5616 container_of(work, struct mwl8k_priv, finalize_join_worker); 5617 struct sk_buff *skb = priv->beacon_skb; 5618 struct ieee80211_mgmt *mgmt = (void *)skb->data; 5619 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 5620 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, 5621 mgmt->u.beacon.variable, len); 5622 int dtim_period = 1; 5623 5624 if (tim && tim[1] >= 2) 5625 dtim_period = tim[3]; 5626 5627 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); 5628 5629 dev_kfree_skb(skb); 5630 priv->beacon_skb = NULL; 5631 } 5632 5633 enum { 5634 MWL8363 = 0, 5635 MWL8687, 5636 MWL8366, 5637 MWL8764, 5638 }; 5639 5640 #define MWL8K_8366_AP_FW_API 3 5641 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" 5642 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) 5643 5644 #define MWL8K_8764_AP_FW_API 1 5645 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" 5646 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) 5647 5648 static struct mwl8k_device_info mwl8k_info_tbl[] = { 5649 [MWL8363] = { 5650 .part_name = "88w8363", 5651 .helper_image = "mwl8k/helper_8363.fw", 5652 .fw_image_sta = "mwl8k/fmimage_8363.fw", 5653 }, 5654 [MWL8687] = { 5655 .part_name = "88w8687", 5656 .helper_image = "mwl8k/helper_8687.fw", 5657 .fw_image_sta = "mwl8k/fmimage_8687.fw", 5658 }, 5659 [MWL8366] = { 5660 .part_name = "88w8366", 5661 .helper_image = "mwl8k/helper_8366.fw", 5662 .fw_image_sta = "mwl8k/fmimage_8366.fw", 5663 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), 5664 .fw_api_ap = MWL8K_8366_AP_FW_API, 5665 .ap_rxd_ops = &rxd_ap_ops, 5666 }, 5667 [MWL8764] = { 5668 .part_name = "88w8764", 5669 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), 5670 .fw_api_ap = MWL8K_8764_AP_FW_API, 5671 .ap_rxd_ops = &rxd_ap_ops, 5672 }, 5673 }; 5674 5675 MODULE_FIRMWARE("mwl8k/helper_8363.fw"); 5676 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); 5677 MODULE_FIRMWARE("mwl8k/helper_8687.fw"); 5678 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); 5679 MODULE_FIRMWARE("mwl8k/helper_8366.fw"); 5680 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); 5681 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); 5682 5683 static const struct pci_device_id mwl8k_pci_id_table[] = { 5684 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, 5685 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, 5686 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, 5687 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, 5688 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, 5689 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, 5690 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, 5691 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, 5692 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, 5693 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, 5694 { }, 5695 }; 5696 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); 5697 5698 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) 5699 { 5700 int rc; 5701 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" 5702 "Trying alternative firmware %s\n", pci_name(priv->pdev), 5703 priv->fw_pref, priv->fw_alt); 5704 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); 5705 if (rc) { 5706 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5707 pci_name(priv->pdev), priv->fw_alt); 5708 return rc; 5709 } 5710 return 0; 5711 } 5712 5713 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); 5714 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) 5715 { 5716 struct mwl8k_priv *priv = context; 5717 struct mwl8k_device_info *di = priv->device_info; 5718 int rc; 5719 5720 switch (priv->fw_state) { 5721 case FW_STATE_INIT: 5722 if (!fw) { 5723 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 5724 pci_name(priv->pdev), di->helper_image); 5725 goto fail; 5726 } 5727 priv->fw_helper = fw; 5728 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, 5729 true); 5730 if (rc && priv->fw_alt) { 5731 rc = mwl8k_request_alt_fw(priv); 5732 if (rc) 5733 goto fail; 5734 priv->fw_state = FW_STATE_LOADING_ALT; 5735 } else if (rc) 5736 goto fail; 5737 else 5738 priv->fw_state = FW_STATE_LOADING_PREF; 5739 break; 5740 5741 case FW_STATE_LOADING_PREF: 5742 if (!fw) { 5743 if (priv->fw_alt) { 5744 rc = mwl8k_request_alt_fw(priv); 5745 if (rc) 5746 goto fail; 5747 priv->fw_state = FW_STATE_LOADING_ALT; 5748 } else 5749 goto fail; 5750 } else { 5751 priv->fw_ucode = fw; 5752 rc = mwl8k_firmware_load_success(priv); 5753 if (rc) 5754 goto fail; 5755 else 5756 complete(&priv->firmware_loading_complete); 5757 } 5758 break; 5759 5760 case FW_STATE_LOADING_ALT: 5761 if (!fw) { 5762 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5763 pci_name(priv->pdev), di->helper_image); 5764 goto fail; 5765 } 5766 priv->fw_ucode = fw; 5767 rc = mwl8k_firmware_load_success(priv); 5768 if (rc) 5769 goto fail; 5770 else 5771 complete(&priv->firmware_loading_complete); 5772 break; 5773 5774 default: 5775 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", 5776 MWL8K_NAME, priv->fw_state); 5777 BUG_ON(1); 5778 } 5779 5780 return; 5781 5782 fail: 5783 priv->fw_state = FW_STATE_ERROR; 5784 complete(&priv->firmware_loading_complete); 5785 device_release_driver(&priv->pdev->dev); 5786 mwl8k_release_firmware(priv); 5787 } 5788 5789 #define MAX_RESTART_ATTEMPTS 1 5790 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, 5791 bool nowait) 5792 { 5793 struct mwl8k_priv *priv = hw->priv; 5794 int rc; 5795 int count = MAX_RESTART_ATTEMPTS; 5796 5797 retry: 5798 /* Reset firmware and hardware */ 5799 mwl8k_hw_reset(priv); 5800 5801 /* Ask userland hotplug daemon for the device firmware */ 5802 rc = mwl8k_request_firmware(priv, fw_image, nowait); 5803 if (rc) { 5804 wiphy_err(hw->wiphy, "Firmware files not found\n"); 5805 return rc; 5806 } 5807 5808 if (nowait) 5809 return rc; 5810 5811 /* Load firmware into hardware */ 5812 rc = mwl8k_load_firmware(hw); 5813 if (rc) 5814 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 5815 5816 /* Reclaim memory once firmware is successfully loaded */ 5817 mwl8k_release_firmware(priv); 5818 5819 if (rc && count) { 5820 /* FW did not start successfully; 5821 * lets try one more time 5822 */ 5823 count--; 5824 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); 5825 msleep(20); 5826 goto retry; 5827 } 5828 5829 return rc; 5830 } 5831 5832 static int mwl8k_init_txqs(struct ieee80211_hw *hw) 5833 { 5834 struct mwl8k_priv *priv = hw->priv; 5835 int rc = 0; 5836 int i; 5837 5838 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 5839 rc = mwl8k_txq_init(hw, i); 5840 if (rc) 5841 break; 5842 if (priv->ap_fw) 5843 iowrite32(priv->txq[i].txd_dma, 5844 priv->sram + priv->txq_offset[i]); 5845 } 5846 return rc; 5847 } 5848 5849 /* initialize hw after successfully loading a firmware image */ 5850 static int mwl8k_probe_hw(struct ieee80211_hw *hw) 5851 { 5852 struct mwl8k_priv *priv = hw->priv; 5853 int rc = 0; 5854 int i; 5855 5856 if (priv->ap_fw) { 5857 priv->rxd_ops = priv->device_info->ap_rxd_ops; 5858 if (priv->rxd_ops == NULL) { 5859 wiphy_err(hw->wiphy, 5860 "Driver does not have AP firmware image support for this hardware\n"); 5861 rc = -ENOENT; 5862 goto err_stop_firmware; 5863 } 5864 } else { 5865 priv->rxd_ops = &rxd_sta_ops; 5866 } 5867 5868 priv->sniffer_enabled = false; 5869 priv->wmm_enabled = false; 5870 priv->pending_tx_pkts = 0; 5871 atomic_set(&priv->watchdog_event_pending, 0); 5872 5873 rc = mwl8k_rxq_init(hw, 0); 5874 if (rc) 5875 goto err_stop_firmware; 5876 rxq_refill(hw, 0, INT_MAX); 5877 5878 /* For the sta firmware, we need to know the dma addresses of tx queues 5879 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them 5880 * prior to issuing this command. But for the AP case, we learn the 5881 * total number of queues from the result CMD_GET_HW_SPEC, so for this 5882 * case we must initialize the tx queues after. 5883 */ 5884 priv->num_ampdu_queues = 0; 5885 if (!priv->ap_fw) { 5886 rc = mwl8k_init_txqs(hw); 5887 if (rc) 5888 goto err_free_queues; 5889 } 5890 5891 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 5892 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5893 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| 5894 MWL8K_A2H_INT_BA_WATCHDOG, 5895 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); 5896 iowrite32(MWL8K_A2H_INT_OPC_DONE, 5897 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 5898 5899 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 5900 IRQF_SHARED, MWL8K_NAME, hw); 5901 if (rc) { 5902 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 5903 goto err_free_queues; 5904 } 5905 5906 /* 5907 * When hw restart is requested, 5908 * mac80211 will take care of clearing 5909 * the ampdu streams, so do not clear 5910 * the ampdu state here 5911 */ 5912 if (!priv->hw_restart_in_progress) 5913 memset(priv->ampdu, 0, sizeof(priv->ampdu)); 5914 5915 /* 5916 * Temporarily enable interrupts. Initial firmware host 5917 * commands use interrupts and avoid polling. Disable 5918 * interrupts when done. 5919 */ 5920 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5921 5922 /* Get config data, mac addrs etc */ 5923 if (priv->ap_fw) { 5924 rc = mwl8k_cmd_get_hw_spec_ap(hw); 5925 if (!rc) 5926 rc = mwl8k_init_txqs(hw); 5927 if (!rc) 5928 rc = mwl8k_cmd_set_hw_spec(hw); 5929 } else { 5930 rc = mwl8k_cmd_get_hw_spec_sta(hw); 5931 } 5932 if (rc) { 5933 wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); 5934 goto err_free_irq; 5935 } 5936 5937 /* Turn radio off */ 5938 rc = mwl8k_cmd_radio_disable(hw); 5939 if (rc) { 5940 wiphy_err(hw->wiphy, "Cannot disable\n"); 5941 goto err_free_irq; 5942 } 5943 5944 /* Clear MAC address */ 5945 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); 5946 if (rc) { 5947 wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); 5948 goto err_free_irq; 5949 } 5950 5951 /* Configure Antennas */ 5952 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); 5953 if (rc) 5954 wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); 5955 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); 5956 if (rc) 5957 wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); 5958 5959 5960 /* Disable interrupts */ 5961 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5962 free_irq(priv->pdev->irq, hw); 5963 5964 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", 5965 priv->device_info->part_name, 5966 priv->hw_rev, hw->wiphy->perm_addr, 5967 priv->ap_fw ? "AP" : "STA", 5968 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, 5969 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); 5970 5971 return 0; 5972 5973 err_free_irq: 5974 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5975 free_irq(priv->pdev->irq, hw); 5976 5977 err_free_queues: 5978 for (i = 0; i < mwl8k_tx_queues(priv); i++) 5979 mwl8k_txq_deinit(hw, i); 5980 mwl8k_rxq_deinit(hw, 0); 5981 5982 err_stop_firmware: 5983 mwl8k_hw_reset(priv); 5984 5985 return rc; 5986 } 5987 5988 /* 5989 * invoke mwl8k_reload_firmware to change the firmware image after the device 5990 * has already been registered 5991 */ 5992 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) 5993 { 5994 int i, rc = 0; 5995 struct mwl8k_priv *priv = hw->priv; 5996 struct mwl8k_vif *vif, *tmp_vif; 5997 5998 mwl8k_stop(hw); 5999 mwl8k_rxq_deinit(hw, 0); 6000 6001 /* 6002 * All the existing interfaces are re-added by the ieee80211_reconfig; 6003 * which means driver should remove existing interfaces before calling 6004 * ieee80211_restart_hw 6005 */ 6006 if (priv->hw_restart_in_progress) 6007 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) 6008 mwl8k_remove_vif(priv, vif); 6009 6010 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6011 mwl8k_txq_deinit(hw, i); 6012 6013 rc = mwl8k_init_firmware(hw, fw_image, false); 6014 if (rc) 6015 goto fail; 6016 6017 rc = mwl8k_probe_hw(hw); 6018 if (rc) 6019 goto fail; 6020 6021 if (priv->hw_restart_in_progress) 6022 return rc; 6023 6024 rc = mwl8k_start(hw); 6025 if (rc) 6026 goto fail; 6027 6028 rc = mwl8k_config(hw, ~0); 6029 if (rc) 6030 goto fail; 6031 6032 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { 6033 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]); 6034 if (rc) 6035 goto fail; 6036 } 6037 6038 return rc; 6039 6040 fail: 6041 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); 6042 return rc; 6043 } 6044 6045 static const struct ieee80211_iface_limit ap_if_limits[] = { 6046 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, 6047 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, 6048 }; 6049 6050 static const struct ieee80211_iface_combination ap_if_comb = { 6051 .limits = ap_if_limits, 6052 .n_limits = ARRAY_SIZE(ap_if_limits), 6053 .max_interfaces = 8, 6054 .num_different_channels = 1, 6055 }; 6056 6057 6058 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) 6059 { 6060 struct ieee80211_hw *hw = priv->hw; 6061 int i, rc; 6062 6063 rc = mwl8k_load_firmware(hw); 6064 mwl8k_release_firmware(priv); 6065 if (rc) { 6066 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 6067 return rc; 6068 } 6069 6070 /* 6071 * Extra headroom is the size of the required DMA header 6072 * minus the size of the smallest 802.11 frame (CTS frame). 6073 */ 6074 hw->extra_tx_headroom = 6075 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); 6076 6077 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; 6078 6079 hw->queues = MWL8K_TX_WMM_QUEUES; 6080 6081 /* Set rssi values to dBm */ 6082 ieee80211_hw_set(hw, SIGNAL_DBM); 6083 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 6084 6085 /* 6086 * Ask mac80211 to not to trigger PS mode 6087 * based on PM bit of incoming frames. 6088 */ 6089 if (priv->ap_fw) 6090 ieee80211_hw_set(hw, AP_LINK_PS); 6091 6092 hw->vif_data_size = sizeof(struct mwl8k_vif); 6093 hw->sta_data_size = sizeof(struct mwl8k_sta); 6094 6095 priv->macids_used = 0; 6096 INIT_LIST_HEAD(&priv->vif_list); 6097 6098 /* Set default radio state and preamble */ 6099 priv->radio_on = false; 6100 priv->radio_short_preamble = false; 6101 6102 /* Finalize join worker */ 6103 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); 6104 /* Handle watchdog ba events */ 6105 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); 6106 /* To reload the firmware if it crashes */ 6107 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); 6108 6109 /* TX reclaim and RX tasklets. */ 6110 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw); 6111 tasklet_disable(&priv->poll_tx_task); 6112 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw); 6113 tasklet_disable(&priv->poll_rx_task); 6114 6115 /* Power management cookie */ 6116 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); 6117 if (priv->cookie == NULL) 6118 return -ENOMEM; 6119 6120 mutex_init(&priv->fw_mutex); 6121 priv->fw_mutex_owner = NULL; 6122 priv->fw_mutex_depth = 0; 6123 priv->hostcmd_wait = NULL; 6124 6125 spin_lock_init(&priv->tx_lock); 6126 6127 spin_lock_init(&priv->stream_lock); 6128 6129 priv->tx_wait = NULL; 6130 6131 rc = mwl8k_probe_hw(hw); 6132 if (rc) 6133 goto err_free_cookie; 6134 6135 hw->wiphy->interface_modes = 0; 6136 6137 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { 6138 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); 6139 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6140 hw->wiphy->iface_combinations = &ap_if_comb; 6141 hw->wiphy->n_iface_combinations = 1; 6142 } 6143 6144 if (priv->sta_macids_supported || priv->device_info->fw_image_sta) 6145 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6146 6147 rc = ieee80211_register_hw(hw); 6148 if (rc) { 6149 wiphy_err(hw->wiphy, "Cannot register device\n"); 6150 goto err_unprobe_hw; 6151 } 6152 6153 return 0; 6154 6155 err_unprobe_hw: 6156 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6157 mwl8k_txq_deinit(hw, i); 6158 mwl8k_rxq_deinit(hw, 0); 6159 6160 err_free_cookie: 6161 if (priv->cookie != NULL) 6162 pci_free_consistent(priv->pdev, 4, 6163 priv->cookie, priv->cookie_dma); 6164 6165 return rc; 6166 } 6167 static int mwl8k_probe(struct pci_dev *pdev, 6168 const struct pci_device_id *id) 6169 { 6170 static int printed_version; 6171 struct ieee80211_hw *hw; 6172 struct mwl8k_priv *priv; 6173 struct mwl8k_device_info *di; 6174 int rc; 6175 6176 if (!printed_version) { 6177 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); 6178 printed_version = 1; 6179 } 6180 6181 6182 rc = pci_enable_device(pdev); 6183 if (rc) { 6184 printk(KERN_ERR "%s: Cannot enable new PCI device\n", 6185 MWL8K_NAME); 6186 return rc; 6187 } 6188 6189 rc = pci_request_regions(pdev, MWL8K_NAME); 6190 if (rc) { 6191 printk(KERN_ERR "%s: Cannot obtain PCI resources\n", 6192 MWL8K_NAME); 6193 goto err_disable_device; 6194 } 6195 6196 pci_set_master(pdev); 6197 6198 6199 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); 6200 if (hw == NULL) { 6201 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); 6202 rc = -ENOMEM; 6203 goto err_free_reg; 6204 } 6205 6206 SET_IEEE80211_DEV(hw, &pdev->dev); 6207 pci_set_drvdata(pdev, hw); 6208 6209 priv = hw->priv; 6210 priv->hw = hw; 6211 priv->pdev = pdev; 6212 priv->device_info = &mwl8k_info_tbl[id->driver_data]; 6213 6214 if (id->driver_data == MWL8764) 6215 priv->is_8764 = true; 6216 6217 priv->sram = pci_iomap(pdev, 0, 0x10000); 6218 if (priv->sram == NULL) { 6219 wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); 6220 rc = -EIO; 6221 goto err_iounmap; 6222 } 6223 6224 /* 6225 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. 6226 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. 6227 */ 6228 priv->regs = pci_iomap(pdev, 1, 0x10000); 6229 if (priv->regs == NULL) { 6230 priv->regs = pci_iomap(pdev, 2, 0x10000); 6231 if (priv->regs == NULL) { 6232 wiphy_err(hw->wiphy, "Cannot map device registers\n"); 6233 rc = -EIO; 6234 goto err_iounmap; 6235 } 6236 } 6237 6238 /* 6239 * Choose the initial fw image depending on user input. If a second 6240 * image is available, make it the alternative image that will be 6241 * loaded if the first one fails. 6242 */ 6243 init_completion(&priv->firmware_loading_complete); 6244 di = priv->device_info; 6245 if (ap_mode_default && di->fw_image_ap) { 6246 priv->fw_pref = di->fw_image_ap; 6247 priv->fw_alt = di->fw_image_sta; 6248 } else if (!ap_mode_default && di->fw_image_sta) { 6249 priv->fw_pref = di->fw_image_sta; 6250 priv->fw_alt = di->fw_image_ap; 6251 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { 6252 printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); 6253 priv->fw_pref = di->fw_image_sta; 6254 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { 6255 printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); 6256 priv->fw_pref = di->fw_image_ap; 6257 } 6258 rc = mwl8k_init_firmware(hw, priv->fw_pref, true); 6259 if (rc) 6260 goto err_stop_firmware; 6261 6262 priv->hw_restart_in_progress = false; 6263 6264 priv->running_bsses = 0; 6265 6266 return rc; 6267 6268 err_stop_firmware: 6269 mwl8k_hw_reset(priv); 6270 6271 err_iounmap: 6272 if (priv->regs != NULL) 6273 pci_iounmap(pdev, priv->regs); 6274 6275 if (priv->sram != NULL) 6276 pci_iounmap(pdev, priv->sram); 6277 6278 ieee80211_free_hw(hw); 6279 6280 err_free_reg: 6281 pci_release_regions(pdev); 6282 6283 err_disable_device: 6284 pci_disable_device(pdev); 6285 6286 return rc; 6287 } 6288 6289 static void mwl8k_remove(struct pci_dev *pdev) 6290 { 6291 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 6292 struct mwl8k_priv *priv; 6293 int i; 6294 6295 if (hw == NULL) 6296 return; 6297 priv = hw->priv; 6298 6299 wait_for_completion(&priv->firmware_loading_complete); 6300 6301 if (priv->fw_state == FW_STATE_ERROR) { 6302 mwl8k_hw_reset(priv); 6303 goto unmap; 6304 } 6305 6306 ieee80211_stop_queues(hw); 6307 6308 ieee80211_unregister_hw(hw); 6309 6310 /* Remove TX reclaim and RX tasklets. */ 6311 tasklet_kill(&priv->poll_tx_task); 6312 tasklet_kill(&priv->poll_rx_task); 6313 6314 /* Stop hardware */ 6315 mwl8k_hw_reset(priv); 6316 6317 /* Return all skbs to mac80211 */ 6318 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6319 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 6320 6321 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6322 mwl8k_txq_deinit(hw, i); 6323 6324 mwl8k_rxq_deinit(hw, 0); 6325 6326 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma); 6327 6328 unmap: 6329 pci_iounmap(pdev, priv->regs); 6330 pci_iounmap(pdev, priv->sram); 6331 ieee80211_free_hw(hw); 6332 pci_release_regions(pdev); 6333 pci_disable_device(pdev); 6334 } 6335 6336 static struct pci_driver mwl8k_driver = { 6337 .name = MWL8K_NAME, 6338 .id_table = mwl8k_pci_id_table, 6339 .probe = mwl8k_probe, 6340 .remove = mwl8k_remove, 6341 }; 6342 6343 module_pci_driver(mwl8k_driver); 6344 6345 MODULE_DESCRIPTION(MWL8K_DESC); 6346 MODULE_VERSION(MWL8K_VERSION); 6347 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); 6348 MODULE_LICENSE("GPL"); 6349