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[9]; 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 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, }, 387 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, }, 388 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, }, 389 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, }, 390 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, }, 391 }; 392 393 static const struct ieee80211_rate mwl8k_rates_50[] = { 394 { .bitrate = 60, .hw_value = 12, }, 395 { .bitrate = 90, .hw_value = 18, }, 396 { .bitrate = 120, .hw_value = 24, }, 397 { .bitrate = 180, .hw_value = 36, }, 398 { .bitrate = 240, .hw_value = 48, }, 399 { .bitrate = 360, .hw_value = 72, }, 400 { .bitrate = 480, .hw_value = 96, }, 401 { .bitrate = 540, .hw_value = 108, }, 402 }; 403 404 /* Set or get info from Firmware */ 405 #define MWL8K_CMD_GET 0x0000 406 #define MWL8K_CMD_SET 0x0001 407 #define MWL8K_CMD_SET_LIST 0x0002 408 409 /* Firmware command codes */ 410 #define MWL8K_CMD_CODE_DNLD 0x0001 411 #define MWL8K_CMD_GET_HW_SPEC 0x0003 412 #define MWL8K_CMD_SET_HW_SPEC 0x0004 413 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 414 #define MWL8K_CMD_GET_STAT 0x0014 415 #define MWL8K_CMD_BBP_REG_ACCESS 0x001a 416 #define MWL8K_CMD_RADIO_CONTROL 0x001c 417 #define MWL8K_CMD_RF_TX_POWER 0x001e 418 #define MWL8K_CMD_TX_POWER 0x001f 419 #define MWL8K_CMD_RF_ANTENNA 0x0020 420 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */ 421 #define MWL8K_CMD_SET_PRE_SCAN 0x0107 422 #define MWL8K_CMD_SET_POST_SCAN 0x0108 423 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a 424 #define MWL8K_CMD_SET_AID 0x010d 425 #define MWL8K_CMD_SET_RATE 0x0110 426 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 427 #define MWL8K_CMD_RTS_THRESHOLD 0x0113 428 #define MWL8K_CMD_SET_SLOT 0x0114 429 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 430 #define MWL8K_CMD_SET_WMM_MODE 0x0123 431 #define MWL8K_CMD_MIMO_CONFIG 0x0125 432 #define MWL8K_CMD_USE_FIXED_RATE 0x0126 433 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 434 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */ 435 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 436 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205 437 #define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */ 438 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */ 439 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */ 440 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */ 441 #define MWL8K_CMD_UPDATE_STADB 0x1123 442 #define MWL8K_CMD_BASTREAM 0x1125 443 444 #define MWL8K_LEGACY_5G_RATE_OFFSET \ 445 (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50)) 446 447 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) 448 { 449 u16 command = le16_to_cpu(cmd); 450 451 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ 452 snprintf(buf, bufsize, "%s", #x);\ 453 return buf;\ 454 } while (0) 455 switch (command & ~0x8000) { 456 MWL8K_CMDNAME(CODE_DNLD); 457 MWL8K_CMDNAME(GET_HW_SPEC); 458 MWL8K_CMDNAME(SET_HW_SPEC); 459 MWL8K_CMDNAME(MAC_MULTICAST_ADR); 460 MWL8K_CMDNAME(GET_STAT); 461 MWL8K_CMDNAME(RADIO_CONTROL); 462 MWL8K_CMDNAME(RF_TX_POWER); 463 MWL8K_CMDNAME(TX_POWER); 464 MWL8K_CMDNAME(RF_ANTENNA); 465 MWL8K_CMDNAME(SET_BEACON); 466 MWL8K_CMDNAME(SET_PRE_SCAN); 467 MWL8K_CMDNAME(SET_POST_SCAN); 468 MWL8K_CMDNAME(SET_RF_CHANNEL); 469 MWL8K_CMDNAME(SET_AID); 470 MWL8K_CMDNAME(SET_RATE); 471 MWL8K_CMDNAME(SET_FINALIZE_JOIN); 472 MWL8K_CMDNAME(RTS_THRESHOLD); 473 MWL8K_CMDNAME(SET_SLOT); 474 MWL8K_CMDNAME(SET_EDCA_PARAMS); 475 MWL8K_CMDNAME(SET_WMM_MODE); 476 MWL8K_CMDNAME(MIMO_CONFIG); 477 MWL8K_CMDNAME(USE_FIXED_RATE); 478 MWL8K_CMDNAME(ENABLE_SNIFFER); 479 MWL8K_CMDNAME(SET_MAC_ADDR); 480 MWL8K_CMDNAME(SET_RATEADAPT_MODE); 481 MWL8K_CMDNAME(BSS_START); 482 MWL8K_CMDNAME(SET_NEW_STN); 483 MWL8K_CMDNAME(UPDATE_ENCRYPTION); 484 MWL8K_CMDNAME(UPDATE_STADB); 485 MWL8K_CMDNAME(BASTREAM); 486 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP); 487 default: 488 snprintf(buf, bufsize, "0x%x", cmd); 489 } 490 #undef MWL8K_CMDNAME 491 492 return buf; 493 } 494 495 /* Hardware and firmware reset */ 496 static void mwl8k_hw_reset(struct mwl8k_priv *priv) 497 { 498 iowrite32(MWL8K_H2A_INT_RESET, 499 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 500 iowrite32(MWL8K_H2A_INT_RESET, 501 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 502 msleep(20); 503 } 504 505 /* Release fw image */ 506 static void mwl8k_release_fw(const struct firmware **fw) 507 { 508 if (*fw == NULL) 509 return; 510 release_firmware(*fw); 511 *fw = NULL; 512 } 513 514 static void mwl8k_release_firmware(struct mwl8k_priv *priv) 515 { 516 mwl8k_release_fw(&priv->fw_ucode); 517 mwl8k_release_fw(&priv->fw_helper); 518 } 519 520 /* states for asynchronous f/w loading */ 521 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context); 522 enum { 523 FW_STATE_INIT = 0, 524 FW_STATE_LOADING_PREF, 525 FW_STATE_LOADING_ALT, 526 FW_STATE_ERROR, 527 }; 528 529 /* Request fw image */ 530 static int mwl8k_request_fw(struct mwl8k_priv *priv, 531 const char *fname, const struct firmware **fw, 532 bool nowait) 533 { 534 /* release current image */ 535 if (*fw != NULL) 536 mwl8k_release_fw(fw); 537 538 if (nowait) 539 return request_firmware_nowait(THIS_MODULE, 1, fname, 540 &priv->pdev->dev, GFP_KERNEL, 541 priv, mwl8k_fw_state_machine); 542 else 543 return request_firmware(fw, fname, &priv->pdev->dev); 544 } 545 546 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, 547 bool nowait) 548 { 549 struct mwl8k_device_info *di = priv->device_info; 550 int rc; 551 552 if (di->helper_image != NULL) { 553 if (nowait) 554 rc = mwl8k_request_fw(priv, di->helper_image, 555 &priv->fw_helper, true); 556 else 557 rc = mwl8k_request_fw(priv, di->helper_image, 558 &priv->fw_helper, false); 559 if (rc) 560 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 561 pci_name(priv->pdev), di->helper_image); 562 563 if (rc || nowait) 564 return rc; 565 } 566 567 if (nowait) { 568 /* 569 * if we get here, no helper image is needed. Skip the 570 * FW_STATE_INIT state. 571 */ 572 priv->fw_state = FW_STATE_LOADING_PREF; 573 rc = mwl8k_request_fw(priv, fw_image, 574 &priv->fw_ucode, 575 true); 576 } else 577 rc = mwl8k_request_fw(priv, fw_image, 578 &priv->fw_ucode, false); 579 if (rc) { 580 printk(KERN_ERR "%s: Error requesting firmware file %s\n", 581 pci_name(priv->pdev), fw_image); 582 mwl8k_release_fw(&priv->fw_helper); 583 return rc; 584 } 585 586 return 0; 587 } 588 589 struct mwl8k_cmd_pkt { 590 __le16 code; 591 __le16 length; 592 __u8 seq_num; 593 __u8 macid; 594 __le16 result; 595 char payload[]; 596 } __packed; 597 598 /* 599 * Firmware loading. 600 */ 601 static int 602 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) 603 { 604 void __iomem *regs = priv->regs; 605 dma_addr_t dma_addr; 606 int loops; 607 608 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); 609 if (pci_dma_mapping_error(priv->pdev, dma_addr)) 610 return -ENOMEM; 611 612 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 613 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 614 iowrite32(MWL8K_H2A_INT_DOORBELL, 615 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 616 iowrite32(MWL8K_H2A_INT_DUMMY, 617 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 618 619 loops = 1000; 620 do { 621 u32 int_code; 622 if (priv->is_8764) { 623 int_code = ioread32(regs + 624 MWL8K_HIU_H2A_INTERRUPT_STATUS); 625 if (int_code == 0) 626 break; 627 } else { 628 int_code = ioread32(regs + MWL8K_HIU_INT_CODE); 629 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { 630 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 631 break; 632 } 633 } 634 cond_resched(); 635 udelay(1); 636 } while (--loops); 637 638 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); 639 640 return loops ? 0 : -ETIMEDOUT; 641 } 642 643 static int mwl8k_load_fw_image(struct mwl8k_priv *priv, 644 const u8 *data, size_t length) 645 { 646 struct mwl8k_cmd_pkt *cmd; 647 int done; 648 int rc = 0; 649 650 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); 651 if (cmd == NULL) 652 return -ENOMEM; 653 654 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); 655 cmd->seq_num = 0; 656 cmd->macid = 0; 657 cmd->result = 0; 658 659 done = 0; 660 while (length) { 661 int block_size = length > 256 ? 256 : length; 662 663 memcpy(cmd->payload, data + done, block_size); 664 cmd->length = cpu_to_le16(block_size); 665 666 rc = mwl8k_send_fw_load_cmd(priv, cmd, 667 sizeof(*cmd) + block_size); 668 if (rc) 669 break; 670 671 done += block_size; 672 length -= block_size; 673 } 674 675 if (!rc) { 676 cmd->length = 0; 677 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); 678 } 679 680 kfree(cmd); 681 682 return rc; 683 } 684 685 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, 686 const u8 *data, size_t length) 687 { 688 unsigned char *buffer; 689 int may_continue, rc = 0; 690 u32 done, prev_block_size; 691 692 buffer = kmalloc(1024, GFP_KERNEL); 693 if (buffer == NULL) 694 return -ENOMEM; 695 696 done = 0; 697 prev_block_size = 0; 698 may_continue = 1000; 699 while (may_continue > 0) { 700 u32 block_size; 701 702 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); 703 if (block_size & 1) { 704 block_size &= ~1; 705 may_continue--; 706 } else { 707 done += prev_block_size; 708 length -= prev_block_size; 709 } 710 711 if (block_size > 1024 || block_size > length) { 712 rc = -EOVERFLOW; 713 break; 714 } 715 716 if (length == 0) { 717 rc = 0; 718 break; 719 } 720 721 if (block_size == 0) { 722 rc = -EPROTO; 723 may_continue--; 724 udelay(1); 725 continue; 726 } 727 728 prev_block_size = block_size; 729 memcpy(buffer, data + done, block_size); 730 731 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); 732 if (rc) 733 break; 734 } 735 736 if (!rc && length != 0) 737 rc = -EREMOTEIO; 738 739 kfree(buffer); 740 741 return rc; 742 } 743 744 static int mwl8k_load_firmware(struct ieee80211_hw *hw) 745 { 746 struct mwl8k_priv *priv = hw->priv; 747 const struct firmware *fw = priv->fw_ucode; 748 int rc; 749 int loops; 750 751 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { 752 const struct firmware *helper = priv->fw_helper; 753 754 if (helper == NULL) { 755 printk(KERN_ERR "%s: helper image needed but none " 756 "given\n", pci_name(priv->pdev)); 757 return -EINVAL; 758 } 759 760 rc = mwl8k_load_fw_image(priv, helper->data, helper->size); 761 if (rc) { 762 printk(KERN_ERR "%s: unable to load firmware " 763 "helper image\n", pci_name(priv->pdev)); 764 return rc; 765 } 766 msleep(20); 767 768 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 769 } else { 770 if (priv->is_8764) 771 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 772 else 773 rc = mwl8k_load_fw_image(priv, fw->data, fw->size); 774 } 775 776 if (rc) { 777 printk(KERN_ERR "%s: unable to load firmware image\n", 778 pci_name(priv->pdev)); 779 return rc; 780 } 781 782 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); 783 784 loops = 500000; 785 do { 786 u32 ready_code; 787 788 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); 789 if (ready_code == MWL8K_FWAP_READY) { 790 priv->ap_fw = true; 791 break; 792 } else if (ready_code == MWL8K_FWSTA_READY) { 793 priv->ap_fw = false; 794 break; 795 } 796 797 cond_resched(); 798 udelay(1); 799 } while (--loops); 800 801 return loops ? 0 : -ETIMEDOUT; 802 } 803 804 805 /* DMA header used by firmware and hardware. */ 806 struct mwl8k_dma_data { 807 __le16 fwlen; 808 struct ieee80211_hdr wh; 809 char data[]; 810 } __packed; 811 812 /* Routines to add/remove DMA header from skb. */ 813 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) 814 { 815 struct mwl8k_dma_data *tr; 816 int hdrlen; 817 818 tr = (struct mwl8k_dma_data *)skb->data; 819 hdrlen = ieee80211_hdrlen(tr->wh.frame_control); 820 821 if (hdrlen != sizeof(tr->wh)) { 822 if (ieee80211_is_data_qos(tr->wh.frame_control)) { 823 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); 824 *((__le16 *)(tr->data - 2)) = qos; 825 } else { 826 memmove(tr->data - hdrlen, &tr->wh, hdrlen); 827 } 828 } 829 830 if (hdrlen != sizeof(*tr)) 831 skb_pull(skb, sizeof(*tr) - hdrlen); 832 } 833 834 #define REDUCED_TX_HEADROOM 8 835 836 static void 837 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, 838 int head_pad, int tail_pad) 839 { 840 struct ieee80211_hdr *wh; 841 int hdrlen; 842 int reqd_hdrlen; 843 struct mwl8k_dma_data *tr; 844 845 /* 846 * Add a firmware DMA header; the firmware requires that we 847 * present a 2-byte payload length followed by a 4-address 848 * header (without QoS field), followed (optionally) by any 849 * WEP/ExtIV header (but only filled in for CCMP). 850 */ 851 wh = (struct ieee80211_hdr *)skb->data; 852 853 hdrlen = ieee80211_hdrlen(wh->frame_control); 854 855 /* 856 * Check if skb_resize is required because of 857 * tx_headroom adjustment. 858 */ 859 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) 860 + REDUCED_TX_HEADROOM))) { 861 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { 862 863 wiphy_err(priv->hw->wiphy, 864 "Failed to reallocate TX buffer\n"); 865 return; 866 } 867 skb->truesize += REDUCED_TX_HEADROOM; 868 } 869 870 reqd_hdrlen = sizeof(*tr) + head_pad; 871 872 if (hdrlen != reqd_hdrlen) 873 skb_push(skb, reqd_hdrlen - hdrlen); 874 875 if (ieee80211_is_data_qos(wh->frame_control)) 876 hdrlen -= IEEE80211_QOS_CTL_LEN; 877 878 tr = (struct mwl8k_dma_data *)skb->data; 879 if (wh != &tr->wh) 880 memmove(&tr->wh, wh, hdrlen); 881 if (hdrlen != sizeof(tr->wh)) 882 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); 883 884 /* 885 * Firmware length is the length of the fully formed "802.11 886 * payload". That is, everything except for the 802.11 header. 887 * This includes all crypto material including the MIC. 888 */ 889 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); 890 } 891 892 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, 893 struct sk_buff *skb) 894 { 895 struct ieee80211_hdr *wh; 896 struct ieee80211_tx_info *tx_info; 897 struct ieee80211_key_conf *key_conf; 898 int data_pad; 899 int head_pad = 0; 900 901 wh = (struct ieee80211_hdr *)skb->data; 902 903 tx_info = IEEE80211_SKB_CB(skb); 904 905 key_conf = NULL; 906 if (ieee80211_is_data(wh->frame_control)) 907 key_conf = tx_info->control.hw_key; 908 909 /* 910 * Make sure the packet header is in the DMA header format (4-address 911 * without QoS), and add head & tail padding when HW crypto is enabled. 912 * 913 * We have the following trailer padding requirements: 914 * - WEP: 4 trailer bytes (ICV) 915 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) 916 * - CCMP: 8 trailer bytes (MIC) 917 */ 918 data_pad = 0; 919 if (key_conf != NULL) { 920 head_pad = key_conf->iv_len; 921 switch (key_conf->cipher) { 922 case WLAN_CIPHER_SUITE_WEP40: 923 case WLAN_CIPHER_SUITE_WEP104: 924 data_pad = 4; 925 break; 926 case WLAN_CIPHER_SUITE_TKIP: 927 data_pad = 12; 928 break; 929 case WLAN_CIPHER_SUITE_CCMP: 930 data_pad = 8; 931 break; 932 } 933 } 934 mwl8k_add_dma_header(priv, skb, head_pad, data_pad); 935 } 936 937 /* 938 * Packet reception for 88w8366/88w8764 AP firmware. 939 */ 940 struct mwl8k_rxd_ap { 941 __le16 pkt_len; 942 __u8 sq2; 943 __u8 rate; 944 __le32 pkt_phys_addr; 945 __le32 next_rxd_phys_addr; 946 __le16 qos_control; 947 __le16 htsig2; 948 __le32 hw_rssi_info; 949 __le32 hw_noise_floor_info; 950 __u8 noise_floor; 951 __u8 pad0[3]; 952 __u8 rssi; 953 __u8 rx_status; 954 __u8 channel; 955 __u8 rx_ctrl; 956 } __packed; 957 958 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 959 #define MWL8K_AP_RATE_INFO_40MHZ 0x40 960 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) 961 962 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 963 964 /* 8366/8764 AP rx_status bits */ 965 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 966 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF 967 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 968 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 969 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 970 971 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) 972 { 973 struct mwl8k_rxd_ap *rxd = _rxd; 974 975 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 976 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; 977 } 978 979 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) 980 { 981 struct mwl8k_rxd_ap *rxd = _rxd; 982 983 rxd->pkt_len = cpu_to_le16(len); 984 rxd->pkt_phys_addr = cpu_to_le32(addr); 985 wmb(); 986 rxd->rx_ctrl = 0; 987 } 988 989 static int 990 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, 991 __le16 *qos, s8 *noise) 992 { 993 struct mwl8k_rxd_ap *rxd = _rxd; 994 995 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) 996 return -1; 997 rmb(); 998 999 memset(status, 0, sizeof(*status)); 1000 1001 status->signal = -rxd->rssi; 1002 *noise = -rxd->noise_floor; 1003 1004 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { 1005 status->encoding = RX_ENC_HT; 1006 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) 1007 status->bw = RATE_INFO_BW_40; 1008 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); 1009 } else { 1010 int i; 1011 1012 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { 1013 if (mwl8k_rates_24[i].hw_value == rxd->rate) { 1014 status->rate_idx = i; 1015 break; 1016 } 1017 } 1018 } 1019 1020 if (rxd->channel > 14) { 1021 status->band = NL80211_BAND_5GHZ; 1022 if (!(status->encoding == RX_ENC_HT) && 1023 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1024 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1025 } else { 1026 status->band = NL80211_BAND_2GHZ; 1027 } 1028 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1029 status->band); 1030 1031 *qos = rxd->qos_control; 1032 1033 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && 1034 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && 1035 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) 1036 status->flag |= RX_FLAG_MMIC_ERROR; 1037 1038 return le16_to_cpu(rxd->pkt_len); 1039 } 1040 1041 static struct rxd_ops rxd_ap_ops = { 1042 .rxd_size = sizeof(struct mwl8k_rxd_ap), 1043 .rxd_init = mwl8k_rxd_ap_init, 1044 .rxd_refill = mwl8k_rxd_ap_refill, 1045 .rxd_process = mwl8k_rxd_ap_process, 1046 }; 1047 1048 /* 1049 * Packet reception for STA firmware. 1050 */ 1051 struct mwl8k_rxd_sta { 1052 __le16 pkt_len; 1053 __u8 link_quality; 1054 __u8 noise_level; 1055 __le32 pkt_phys_addr; 1056 __le32 next_rxd_phys_addr; 1057 __le16 qos_control; 1058 __le16 rate_info; 1059 __le32 pad0[4]; 1060 __u8 rssi; 1061 __u8 channel; 1062 __le16 pad1; 1063 __u8 rx_ctrl; 1064 __u8 rx_status; 1065 __u8 pad2[2]; 1066 } __packed; 1067 1068 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 1069 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) 1070 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) 1071 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004 1072 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 1073 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 1074 1075 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 1076 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 1077 /* ICV=0 or MIC=1 */ 1078 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 1079 /* Key is uploaded only in failure case */ 1080 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 1081 1082 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) 1083 { 1084 struct mwl8k_rxd_sta *rxd = _rxd; 1085 1086 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 1087 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; 1088 } 1089 1090 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) 1091 { 1092 struct mwl8k_rxd_sta *rxd = _rxd; 1093 1094 rxd->pkt_len = cpu_to_le16(len); 1095 rxd->pkt_phys_addr = cpu_to_le32(addr); 1096 wmb(); 1097 rxd->rx_ctrl = 0; 1098 } 1099 1100 static int 1101 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, 1102 __le16 *qos, s8 *noise) 1103 { 1104 struct mwl8k_rxd_sta *rxd = _rxd; 1105 u16 rate_info; 1106 1107 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) 1108 return -1; 1109 rmb(); 1110 1111 rate_info = le16_to_cpu(rxd->rate_info); 1112 1113 memset(status, 0, sizeof(*status)); 1114 1115 status->signal = -rxd->rssi; 1116 *noise = -rxd->noise_level; 1117 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); 1118 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); 1119 1120 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) 1121 status->enc_flags |= RX_ENC_FLAG_SHORTPRE; 1122 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) 1123 status->bw = RATE_INFO_BW_40; 1124 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) 1125 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1126 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) 1127 status->encoding = RX_ENC_HT; 1128 1129 if (rxd->channel > 14) { 1130 status->band = NL80211_BAND_5GHZ; 1131 if (!(status->encoding == RX_ENC_HT) && 1132 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1133 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1134 } else { 1135 status->band = NL80211_BAND_2GHZ; 1136 } 1137 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1138 status->band); 1139 1140 *qos = rxd->qos_control; 1141 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && 1142 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) 1143 status->flag |= RX_FLAG_MMIC_ERROR; 1144 1145 return le16_to_cpu(rxd->pkt_len); 1146 } 1147 1148 static struct rxd_ops rxd_sta_ops = { 1149 .rxd_size = sizeof(struct mwl8k_rxd_sta), 1150 .rxd_init = mwl8k_rxd_sta_init, 1151 .rxd_refill = mwl8k_rxd_sta_refill, 1152 .rxd_process = mwl8k_rxd_sta_process, 1153 }; 1154 1155 1156 #define MWL8K_RX_DESCS 256 1157 #define MWL8K_RX_MAXSZ 3800 1158 1159 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) 1160 { 1161 struct mwl8k_priv *priv = hw->priv; 1162 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1163 int size; 1164 int i; 1165 1166 rxq->rxd_count = 0; 1167 rxq->head = 0; 1168 rxq->tail = 0; 1169 1170 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; 1171 1172 rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma); 1173 if (rxq->rxd == NULL) { 1174 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); 1175 return -ENOMEM; 1176 } 1177 1178 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); 1179 if (rxq->buf == NULL) { 1180 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma); 1181 return -ENOMEM; 1182 } 1183 1184 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1185 int desc_size; 1186 void *rxd; 1187 int nexti; 1188 dma_addr_t next_dma_addr; 1189 1190 desc_size = priv->rxd_ops->rxd_size; 1191 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); 1192 1193 nexti = i + 1; 1194 if (nexti == MWL8K_RX_DESCS) 1195 nexti = 0; 1196 next_dma_addr = rxq->rxd_dma + (nexti * desc_size); 1197 1198 priv->rxd_ops->rxd_init(rxd, next_dma_addr); 1199 } 1200 1201 return 0; 1202 } 1203 1204 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) 1205 { 1206 struct mwl8k_priv *priv = hw->priv; 1207 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1208 int refilled; 1209 1210 refilled = 0; 1211 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { 1212 struct sk_buff *skb; 1213 dma_addr_t addr; 1214 int rx; 1215 void *rxd; 1216 1217 skb = dev_alloc_skb(MWL8K_RX_MAXSZ); 1218 if (skb == NULL) 1219 break; 1220 1221 addr = pci_map_single(priv->pdev, skb->data, 1222 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1223 1224 rxq->rxd_count++; 1225 rx = rxq->tail++; 1226 if (rxq->tail == MWL8K_RX_DESCS) 1227 rxq->tail = 0; 1228 rxq->buf[rx].skb = skb; 1229 dma_unmap_addr_set(&rxq->buf[rx], dma, addr); 1230 1231 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); 1232 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); 1233 1234 refilled++; 1235 } 1236 1237 return refilled; 1238 } 1239 1240 /* Must be called only when the card's reception is completely halted */ 1241 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) 1242 { 1243 struct mwl8k_priv *priv = hw->priv; 1244 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1245 int i; 1246 1247 if (rxq->rxd == NULL) 1248 return; 1249 1250 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1251 if (rxq->buf[i].skb != NULL) { 1252 pci_unmap_single(priv->pdev, 1253 dma_unmap_addr(&rxq->buf[i], dma), 1254 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); 1255 dma_unmap_addr_set(&rxq->buf[i], dma, 0); 1256 1257 kfree_skb(rxq->buf[i].skb); 1258 rxq->buf[i].skb = NULL; 1259 } 1260 } 1261 1262 kfree(rxq->buf); 1263 rxq->buf = NULL; 1264 1265 pci_free_consistent(priv->pdev, 1266 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, 1267 rxq->rxd, rxq->rxd_dma); 1268 rxq->rxd = NULL; 1269 } 1270 1271 1272 /* 1273 * Scan a list of BSSIDs to process for finalize join. 1274 * Allows for extension to process multiple BSSIDs. 1275 */ 1276 static inline int 1277 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) 1278 { 1279 return priv->capture_beacon && 1280 ieee80211_is_beacon(wh->frame_control) && 1281 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); 1282 } 1283 1284 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, 1285 struct sk_buff *skb) 1286 { 1287 struct mwl8k_priv *priv = hw->priv; 1288 1289 priv->capture_beacon = false; 1290 eth_zero_addr(priv->capture_bssid); 1291 1292 /* 1293 * Use GFP_ATOMIC as rxq_process is called from 1294 * the primary interrupt handler, memory allocation call 1295 * must not sleep. 1296 */ 1297 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); 1298 if (priv->beacon_skb != NULL) 1299 ieee80211_queue_work(hw, &priv->finalize_join_worker); 1300 } 1301 1302 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, 1303 u8 *bssid) 1304 { 1305 struct mwl8k_vif *mwl8k_vif; 1306 1307 list_for_each_entry(mwl8k_vif, 1308 vif_list, list) { 1309 if (memcmp(bssid, mwl8k_vif->bssid, 1310 ETH_ALEN) == 0) 1311 return mwl8k_vif; 1312 } 1313 1314 return NULL; 1315 } 1316 1317 static int rxq_process(struct ieee80211_hw *hw, int index, int limit) 1318 { 1319 struct mwl8k_priv *priv = hw->priv; 1320 struct mwl8k_vif *mwl8k_vif = NULL; 1321 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1322 int processed; 1323 1324 processed = 0; 1325 while (rxq->rxd_count && limit--) { 1326 struct sk_buff *skb; 1327 void *rxd; 1328 int pkt_len; 1329 struct ieee80211_rx_status status; 1330 struct ieee80211_hdr *wh; 1331 __le16 qos; 1332 1333 skb = rxq->buf[rxq->head].skb; 1334 if (skb == NULL) 1335 break; 1336 1337 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); 1338 1339 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, 1340 &priv->noise); 1341 if (pkt_len < 0) 1342 break; 1343 1344 rxq->buf[rxq->head].skb = NULL; 1345 1346 pci_unmap_single(priv->pdev, 1347 dma_unmap_addr(&rxq->buf[rxq->head], dma), 1348 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); 1349 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); 1350 1351 rxq->head++; 1352 if (rxq->head == MWL8K_RX_DESCS) 1353 rxq->head = 0; 1354 1355 rxq->rxd_count--; 1356 1357 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1358 1359 /* 1360 * Check for a pending join operation. Save a 1361 * copy of the beacon and schedule a tasklet to 1362 * send a FINALIZE_JOIN command to the firmware. 1363 */ 1364 if (mwl8k_capture_bssid(priv, (void *)skb->data)) 1365 mwl8k_save_beacon(hw, skb); 1366 1367 if (ieee80211_has_protected(wh->frame_control)) { 1368 1369 /* Check if hw crypto has been enabled for 1370 * this bss. If yes, set the status flags 1371 * accordingly 1372 */ 1373 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, 1374 wh->addr1); 1375 1376 if (mwl8k_vif != NULL && 1377 mwl8k_vif->is_hw_crypto_enabled) { 1378 /* 1379 * When MMIC ERROR is encountered 1380 * by the firmware, payload is 1381 * dropped and only 32 bytes of 1382 * mwl8k Firmware header is sent 1383 * to the host. 1384 * 1385 * We need to add four bytes of 1386 * key information. In it 1387 * MAC80211 expects keyidx set to 1388 * 0 for triggering Counter 1389 * Measure of MMIC failure. 1390 */ 1391 if (status.flag & RX_FLAG_MMIC_ERROR) { 1392 struct mwl8k_dma_data *tr; 1393 tr = (struct mwl8k_dma_data *)skb->data; 1394 memset((void *)&(tr->data), 0, 4); 1395 pkt_len += 4; 1396 } 1397 1398 if (!ieee80211_is_auth(wh->frame_control)) 1399 status.flag |= RX_FLAG_IV_STRIPPED | 1400 RX_FLAG_DECRYPTED | 1401 RX_FLAG_MMIC_STRIPPED; 1402 } 1403 } 1404 1405 skb_put(skb, pkt_len); 1406 mwl8k_remove_dma_header(skb, qos); 1407 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 1408 ieee80211_rx_irqsafe(hw, skb); 1409 1410 processed++; 1411 } 1412 1413 return processed; 1414 } 1415 1416 1417 /* 1418 * Packet transmission. 1419 */ 1420 1421 #define MWL8K_TXD_STATUS_OK 0x00000001 1422 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 1423 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 1424 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 1425 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 1426 1427 #define MWL8K_QOS_QLEN_UNSPEC 0xff00 1428 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060 1429 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 1430 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 1431 #define MWL8K_QOS_EOSP 0x0010 1432 1433 struct mwl8k_tx_desc { 1434 __le32 status; 1435 __u8 data_rate; 1436 __u8 tx_priority; 1437 __le16 qos_control; 1438 __le32 pkt_phys_addr; 1439 __le16 pkt_len; 1440 __u8 dest_MAC_addr[ETH_ALEN]; 1441 __le32 next_txd_phys_addr; 1442 __le32 timestamp; 1443 __le16 rate_info; 1444 __u8 peer_id; 1445 __u8 tx_frag_cnt; 1446 } __packed; 1447 1448 #define MWL8K_TX_DESCS 128 1449 1450 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) 1451 { 1452 struct mwl8k_priv *priv = hw->priv; 1453 struct mwl8k_tx_queue *txq = priv->txq + index; 1454 int size; 1455 int i; 1456 1457 txq->len = 0; 1458 txq->head = 0; 1459 txq->tail = 0; 1460 1461 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); 1462 1463 txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma); 1464 if (txq->txd == NULL) { 1465 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); 1466 return -ENOMEM; 1467 } 1468 1469 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); 1470 if (txq->skb == NULL) { 1471 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma); 1472 return -ENOMEM; 1473 } 1474 1475 for (i = 0; i < MWL8K_TX_DESCS; i++) { 1476 struct mwl8k_tx_desc *tx_desc; 1477 int nexti; 1478 1479 tx_desc = txq->txd + i; 1480 nexti = (i + 1) % MWL8K_TX_DESCS; 1481 1482 tx_desc->status = 0; 1483 tx_desc->next_txd_phys_addr = 1484 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); 1485 } 1486 1487 return 0; 1488 } 1489 1490 static inline void mwl8k_tx_start(struct mwl8k_priv *priv) 1491 { 1492 iowrite32(MWL8K_H2A_INT_PPA_READY, 1493 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1494 iowrite32(MWL8K_H2A_INT_DUMMY, 1495 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1496 ioread32(priv->regs + MWL8K_HIU_INT_CODE); 1497 } 1498 1499 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) 1500 { 1501 struct mwl8k_priv *priv = hw->priv; 1502 int i; 1503 1504 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 1505 struct mwl8k_tx_queue *txq = priv->txq + i; 1506 int fw_owned = 0; 1507 int drv_owned = 0; 1508 int unused = 0; 1509 int desc; 1510 1511 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { 1512 struct mwl8k_tx_desc *tx_desc = txq->txd + desc; 1513 u32 status; 1514 1515 status = le32_to_cpu(tx_desc->status); 1516 if (status & MWL8K_TXD_STATUS_FW_OWNED) 1517 fw_owned++; 1518 else 1519 drv_owned++; 1520 1521 if (tx_desc->pkt_len == 0) 1522 unused++; 1523 } 1524 1525 wiphy_err(hw->wiphy, 1526 "txq[%d] len=%d head=%d tail=%d " 1527 "fw_owned=%d drv_owned=%d unused=%d\n", 1528 i, 1529 txq->len, txq->head, txq->tail, 1530 fw_owned, drv_owned, unused); 1531 } 1532 } 1533 1534 /* 1535 * Must be called with priv->fw_mutex held and tx queues stopped. 1536 */ 1537 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000 1538 1539 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) 1540 { 1541 struct mwl8k_priv *priv = hw->priv; 1542 DECLARE_COMPLETION_ONSTACK(tx_wait); 1543 int retry; 1544 int rc; 1545 1546 might_sleep(); 1547 1548 /* Since fw restart is in progress, allow only the firmware 1549 * commands from the restart code and block the other 1550 * commands since they are going to fail in any case since 1551 * the firmware has crashed 1552 */ 1553 if (priv->hw_restart_in_progress) { 1554 if (priv->hw_restart_owner == current) 1555 return 0; 1556 else 1557 return -EBUSY; 1558 } 1559 1560 if (atomic_read(&priv->watchdog_event_pending)) 1561 return 0; 1562 1563 /* 1564 * The TX queues are stopped at this point, so this test 1565 * doesn't need to take ->tx_lock. 1566 */ 1567 if (!priv->pending_tx_pkts) 1568 return 0; 1569 1570 retry = 1; 1571 rc = 0; 1572 1573 spin_lock_bh(&priv->tx_lock); 1574 priv->tx_wait = &tx_wait; 1575 while (!rc) { 1576 int oldcount; 1577 unsigned long timeout; 1578 1579 oldcount = priv->pending_tx_pkts; 1580 1581 spin_unlock_bh(&priv->tx_lock); 1582 timeout = wait_for_completion_timeout(&tx_wait, 1583 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); 1584 1585 if (atomic_read(&priv->watchdog_event_pending)) { 1586 spin_lock_bh(&priv->tx_lock); 1587 priv->tx_wait = NULL; 1588 spin_unlock_bh(&priv->tx_lock); 1589 return 0; 1590 } 1591 1592 spin_lock_bh(&priv->tx_lock); 1593 1594 if (timeout || !priv->pending_tx_pkts) { 1595 WARN_ON(priv->pending_tx_pkts); 1596 if (retry) 1597 wiphy_notice(hw->wiphy, "tx rings drained\n"); 1598 break; 1599 } 1600 1601 if (retry) { 1602 mwl8k_tx_start(priv); 1603 retry = 0; 1604 continue; 1605 } 1606 1607 if (priv->pending_tx_pkts < oldcount) { 1608 wiphy_notice(hw->wiphy, 1609 "waiting for tx rings to drain (%d -> %d pkts)\n", 1610 oldcount, priv->pending_tx_pkts); 1611 retry = 1; 1612 continue; 1613 } 1614 1615 priv->tx_wait = NULL; 1616 1617 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", 1618 MWL8K_TX_WAIT_TIMEOUT_MS); 1619 mwl8k_dump_tx_rings(hw); 1620 priv->hw_restart_in_progress = true; 1621 ieee80211_queue_work(hw, &priv->fw_reload); 1622 1623 rc = -ETIMEDOUT; 1624 } 1625 priv->tx_wait = NULL; 1626 spin_unlock_bh(&priv->tx_lock); 1627 1628 return rc; 1629 } 1630 1631 #define MWL8K_TXD_SUCCESS(status) \ 1632 ((status) & (MWL8K_TXD_STATUS_OK | \ 1633 MWL8K_TXD_STATUS_OK_RETRY | \ 1634 MWL8K_TXD_STATUS_OK_MORE_RETRY)) 1635 1636 static int mwl8k_tid_queue_mapping(u8 tid) 1637 { 1638 BUG_ON(tid > 7); 1639 1640 switch (tid) { 1641 case 0: 1642 case 3: 1643 return IEEE80211_AC_BE; 1644 case 1: 1645 case 2: 1646 return IEEE80211_AC_BK; 1647 case 4: 1648 case 5: 1649 return IEEE80211_AC_VI; 1650 case 6: 1651 case 7: 1652 return IEEE80211_AC_VO; 1653 default: 1654 return -1; 1655 } 1656 } 1657 1658 /* The firmware will fill in the rate information 1659 * for each packet that gets queued in the hardware 1660 * and these macros will interpret that info. 1661 */ 1662 1663 #define RI_FORMAT(a) (a & 0x0001) 1664 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) 1665 1666 static int 1667 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) 1668 { 1669 struct mwl8k_priv *priv = hw->priv; 1670 struct mwl8k_tx_queue *txq = priv->txq + index; 1671 int processed; 1672 1673 processed = 0; 1674 while (txq->len > 0 && limit--) { 1675 int tx; 1676 struct mwl8k_tx_desc *tx_desc; 1677 unsigned long addr; 1678 int size; 1679 struct sk_buff *skb; 1680 struct ieee80211_tx_info *info; 1681 u32 status; 1682 struct ieee80211_sta *sta; 1683 struct mwl8k_sta *sta_info = NULL; 1684 u16 rate_info; 1685 struct ieee80211_hdr *wh; 1686 1687 tx = txq->head; 1688 tx_desc = txq->txd + tx; 1689 1690 status = le32_to_cpu(tx_desc->status); 1691 1692 if (status & MWL8K_TXD_STATUS_FW_OWNED) { 1693 if (!force) 1694 break; 1695 tx_desc->status &= 1696 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); 1697 } 1698 1699 txq->head = (tx + 1) % MWL8K_TX_DESCS; 1700 BUG_ON(txq->len == 0); 1701 txq->len--; 1702 priv->pending_tx_pkts--; 1703 1704 addr = le32_to_cpu(tx_desc->pkt_phys_addr); 1705 size = le16_to_cpu(tx_desc->pkt_len); 1706 skb = txq->skb[tx]; 1707 txq->skb[tx] = NULL; 1708 1709 BUG_ON(skb == NULL); 1710 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); 1711 1712 mwl8k_remove_dma_header(skb, tx_desc->qos_control); 1713 1714 wh = (struct ieee80211_hdr *) skb->data; 1715 1716 /* Mark descriptor as unused */ 1717 tx_desc->pkt_phys_addr = 0; 1718 tx_desc->pkt_len = 0; 1719 1720 info = IEEE80211_SKB_CB(skb); 1721 if (ieee80211_is_data(wh->frame_control)) { 1722 rcu_read_lock(); 1723 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, 1724 wh->addr2); 1725 if (sta) { 1726 sta_info = MWL8K_STA(sta); 1727 BUG_ON(sta_info == NULL); 1728 rate_info = le16_to_cpu(tx_desc->rate_info); 1729 /* If rate is < 6.5 Mpbs for an ht station 1730 * do not form an ampdu. If the station is a 1731 * legacy station (format = 0), do not form an 1732 * ampdu 1733 */ 1734 if (RI_RATE_ID_MCS(rate_info) < 1 || 1735 RI_FORMAT(rate_info) == 0) { 1736 sta_info->is_ampdu_allowed = false; 1737 } else { 1738 sta_info->is_ampdu_allowed = true; 1739 } 1740 } 1741 rcu_read_unlock(); 1742 } 1743 1744 ieee80211_tx_info_clear_status(info); 1745 1746 /* Rate control is happening in the firmware. 1747 * Ensure no tx rate is being reported. 1748 */ 1749 info->status.rates[0].idx = -1; 1750 info->status.rates[0].count = 1; 1751 1752 if (MWL8K_TXD_SUCCESS(status)) 1753 info->flags |= IEEE80211_TX_STAT_ACK; 1754 1755 ieee80211_tx_status_irqsafe(hw, skb); 1756 1757 processed++; 1758 } 1759 1760 return processed; 1761 } 1762 1763 /* must be called only when the card's transmit is completely halted */ 1764 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) 1765 { 1766 struct mwl8k_priv *priv = hw->priv; 1767 struct mwl8k_tx_queue *txq = priv->txq + index; 1768 1769 if (txq->txd == NULL) 1770 return; 1771 1772 mwl8k_txq_reclaim(hw, index, INT_MAX, 1); 1773 1774 kfree(txq->skb); 1775 txq->skb = NULL; 1776 1777 pci_free_consistent(priv->pdev, 1778 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), 1779 txq->txd, txq->txd_dma); 1780 txq->txd = NULL; 1781 } 1782 1783 /* caller must hold priv->stream_lock when calling the stream functions */ 1784 static struct mwl8k_ampdu_stream * 1785 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) 1786 { 1787 struct mwl8k_ampdu_stream *stream; 1788 struct mwl8k_priv *priv = hw->priv; 1789 int i; 1790 1791 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1792 stream = &priv->ampdu[i]; 1793 if (stream->state == AMPDU_NO_STREAM) { 1794 stream->sta = sta; 1795 stream->state = AMPDU_STREAM_NEW; 1796 stream->tid = tid; 1797 stream->idx = i; 1798 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", 1799 sta->addr, tid); 1800 return stream; 1801 } 1802 } 1803 return NULL; 1804 } 1805 1806 static int 1807 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1808 { 1809 int ret; 1810 1811 /* if the stream has already been started, don't start it again */ 1812 if (stream->state != AMPDU_STREAM_NEW) 1813 return 0; 1814 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); 1815 if (ret) 1816 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " 1817 "%d\n", stream->sta->addr, stream->tid, ret); 1818 else 1819 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", 1820 stream->sta->addr, stream->tid); 1821 return ret; 1822 } 1823 1824 static void 1825 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1826 { 1827 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, 1828 stream->tid); 1829 memset(stream, 0, sizeof(*stream)); 1830 } 1831 1832 static struct mwl8k_ampdu_stream * 1833 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) 1834 { 1835 struct mwl8k_priv *priv = hw->priv; 1836 int i; 1837 1838 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1839 struct mwl8k_ampdu_stream *stream; 1840 stream = &priv->ampdu[i]; 1841 if (stream->state == AMPDU_NO_STREAM) 1842 continue; 1843 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && 1844 stream->tid == tid) 1845 return stream; 1846 } 1847 return NULL; 1848 } 1849 1850 #define MWL8K_AMPDU_PACKET_THRESHOLD 64 1851 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) 1852 { 1853 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1854 struct tx_traffic_info *tx_stats; 1855 1856 BUG_ON(tid >= MWL8K_MAX_TID); 1857 tx_stats = &sta_info->tx_stats[tid]; 1858 1859 return sta_info->is_ampdu_allowed && 1860 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; 1861 } 1862 1863 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) 1864 { 1865 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1866 struct tx_traffic_info *tx_stats; 1867 1868 BUG_ON(tid >= MWL8K_MAX_TID); 1869 tx_stats = &sta_info->tx_stats[tid]; 1870 1871 if (tx_stats->start_time == 0) 1872 tx_stats->start_time = jiffies; 1873 1874 /* reset the packet count after each second elapses. If the number of 1875 * packets ever exceeds the ampdu_min_traffic threshold, we will allow 1876 * an ampdu stream to be started. 1877 */ 1878 if (jiffies - tx_stats->start_time > HZ) { 1879 tx_stats->pkts = 0; 1880 tx_stats->start_time = 0; 1881 } else 1882 tx_stats->pkts++; 1883 } 1884 1885 /* The hardware ampdu queues start from 5. 1886 * txpriorities for ampdu queues are 1887 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest 1888 * and queue 3 is lowest (queue 4 is reserved) 1889 */ 1890 #define BA_QUEUE 5 1891 1892 static void 1893 mwl8k_txq_xmit(struct ieee80211_hw *hw, 1894 int index, 1895 struct ieee80211_sta *sta, 1896 struct sk_buff *skb) 1897 { 1898 struct mwl8k_priv *priv = hw->priv; 1899 struct ieee80211_tx_info *tx_info; 1900 struct mwl8k_vif *mwl8k_vif; 1901 struct ieee80211_hdr *wh; 1902 struct mwl8k_tx_queue *txq; 1903 struct mwl8k_tx_desc *tx; 1904 dma_addr_t dma; 1905 u32 txstatus; 1906 u8 txdatarate; 1907 u16 qos; 1908 int txpriority; 1909 u8 tid = 0; 1910 struct mwl8k_ampdu_stream *stream = NULL; 1911 bool start_ba_session = false; 1912 bool mgmtframe = false; 1913 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1914 bool eapol_frame = false; 1915 1916 wh = (struct ieee80211_hdr *)skb->data; 1917 if (ieee80211_is_data_qos(wh->frame_control)) 1918 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); 1919 else 1920 qos = 0; 1921 1922 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 1923 eapol_frame = true; 1924 1925 if (ieee80211_is_mgmt(wh->frame_control)) 1926 mgmtframe = true; 1927 1928 if (priv->ap_fw) 1929 mwl8k_encapsulate_tx_frame(priv, skb); 1930 else 1931 mwl8k_add_dma_header(priv, skb, 0, 0); 1932 1933 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1934 1935 tx_info = IEEE80211_SKB_CB(skb); 1936 mwl8k_vif = MWL8K_VIF(tx_info->control.vif); 1937 1938 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1939 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1940 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); 1941 mwl8k_vif->seqno += 0x10; 1942 } 1943 1944 /* Setup firmware control bit fields for each frame type. */ 1945 txstatus = 0; 1946 txdatarate = 0; 1947 if (ieee80211_is_mgmt(wh->frame_control) || 1948 ieee80211_is_ctl(wh->frame_control)) { 1949 txdatarate = 0; 1950 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; 1951 } else if (ieee80211_is_data(wh->frame_control)) { 1952 txdatarate = 1; 1953 if (is_multicast_ether_addr(wh->addr1)) 1954 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; 1955 1956 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 1957 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) 1958 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; 1959 else 1960 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 1961 } 1962 1963 /* Queue ADDBA request in the respective data queue. While setting up 1964 * the ampdu stream, mac80211 queues further packets for that 1965 * particular ra/tid pair. However, packets piled up in the hardware 1966 * for that ra/tid pair will still go out. ADDBA request and the 1967 * related data packets going out from different queues asynchronously 1968 * will cause a shift in the receiver window which might result in 1969 * ampdu packets getting dropped at the receiver after the stream has 1970 * been setup. 1971 */ 1972 if (unlikely(ieee80211_is_action(wh->frame_control) && 1973 mgmt->u.action.category == WLAN_CATEGORY_BACK && 1974 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && 1975 priv->ap_fw)) { 1976 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); 1977 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; 1978 index = mwl8k_tid_queue_mapping(tid); 1979 } 1980 1981 txpriority = index; 1982 1983 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame && 1984 ieee80211_is_data_qos(wh->frame_control)) { 1985 tid = qos & 0xf; 1986 mwl8k_tx_count_packet(sta, tid); 1987 spin_lock(&priv->stream_lock); 1988 stream = mwl8k_lookup_stream(hw, sta->addr, tid); 1989 if (stream != NULL) { 1990 if (stream->state == AMPDU_STREAM_ACTIVE) { 1991 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); 1992 txpriority = (BA_QUEUE + stream->idx) % 1993 TOTAL_HW_TX_QUEUES; 1994 if (stream->idx <= 1) 1995 index = stream->idx + 1996 MWL8K_TX_WMM_QUEUES; 1997 1998 } else if (stream->state == AMPDU_STREAM_NEW) { 1999 /* We get here if the driver sends us packets 2000 * after we've initiated a stream, but before 2001 * our ampdu_action routine has been called 2002 * with IEEE80211_AMPDU_TX_START to get the SSN 2003 * for the ADDBA request. So this packet can 2004 * go out with no risk of sequence number 2005 * mismatch. No special handling is required. 2006 */ 2007 } else { 2008 /* Drop packets that would go out after the 2009 * ADDBA request was sent but before the ADDBA 2010 * response is received. If we don't do this, 2011 * the recipient would probably receive it 2012 * after the ADDBA request with SSN 0. This 2013 * will cause the recipient's BA receive window 2014 * to shift, which would cause the subsequent 2015 * packets in the BA stream to be discarded. 2016 * mac80211 queues our packets for us in this 2017 * case, so this is really just a safety check. 2018 */ 2019 wiphy_warn(hw->wiphy, 2020 "Cannot send packet while ADDBA " 2021 "dialog is underway.\n"); 2022 spin_unlock(&priv->stream_lock); 2023 dev_kfree_skb(skb); 2024 return; 2025 } 2026 } else { 2027 /* Defer calling mwl8k_start_stream so that the current 2028 * skb can go out before the ADDBA request. This 2029 * prevents sequence number mismatch at the recepient 2030 * as described above. 2031 */ 2032 if (mwl8k_ampdu_allowed(sta, tid)) { 2033 stream = mwl8k_add_stream(hw, sta, tid); 2034 if (stream != NULL) 2035 start_ba_session = true; 2036 } 2037 } 2038 spin_unlock(&priv->stream_lock); 2039 } else { 2040 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 2041 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 2042 } 2043 2044 dma = pci_map_single(priv->pdev, skb->data, 2045 skb->len, PCI_DMA_TODEVICE); 2046 2047 if (pci_dma_mapping_error(priv->pdev, dma)) { 2048 wiphy_debug(hw->wiphy, 2049 "failed to dma map skb, dropping TX frame.\n"); 2050 if (start_ba_session) { 2051 spin_lock(&priv->stream_lock); 2052 mwl8k_remove_stream(hw, stream); 2053 spin_unlock(&priv->stream_lock); 2054 } 2055 dev_kfree_skb(skb); 2056 return; 2057 } 2058 2059 spin_lock_bh(&priv->tx_lock); 2060 2061 txq = priv->txq + index; 2062 2063 /* Mgmt frames that go out frequently are probe 2064 * responses. Other mgmt frames got out relatively 2065 * infrequently. Hence reserve 2 buffers so that 2066 * other mgmt frames do not get dropped due to an 2067 * already queued probe response in one of the 2068 * reserved buffers. 2069 */ 2070 2071 if (txq->len >= MWL8K_TX_DESCS - 2) { 2072 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { 2073 if (start_ba_session) { 2074 spin_lock(&priv->stream_lock); 2075 mwl8k_remove_stream(hw, stream); 2076 spin_unlock(&priv->stream_lock); 2077 } 2078 mwl8k_tx_start(priv); 2079 spin_unlock_bh(&priv->tx_lock); 2080 pci_unmap_single(priv->pdev, dma, skb->len, 2081 PCI_DMA_TODEVICE); 2082 dev_kfree_skb(skb); 2083 return; 2084 } 2085 } 2086 2087 BUG_ON(txq->skb[txq->tail] != NULL); 2088 txq->skb[txq->tail] = skb; 2089 2090 tx = txq->txd + txq->tail; 2091 tx->data_rate = txdatarate; 2092 tx->tx_priority = txpriority; 2093 tx->qos_control = cpu_to_le16(qos); 2094 tx->pkt_phys_addr = cpu_to_le32(dma); 2095 tx->pkt_len = cpu_to_le16(skb->len); 2096 tx->rate_info = 0; 2097 if (!priv->ap_fw && sta != NULL) 2098 tx->peer_id = MWL8K_STA(sta)->peer_id; 2099 else 2100 tx->peer_id = 0; 2101 2102 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) 2103 tx->timestamp = cpu_to_le32(ioread32(priv->regs + 2104 MWL8K_HW_TIMER_REGISTER)); 2105 else 2106 tx->timestamp = 0; 2107 2108 wmb(); 2109 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); 2110 2111 txq->len++; 2112 priv->pending_tx_pkts++; 2113 2114 txq->tail++; 2115 if (txq->tail == MWL8K_TX_DESCS) 2116 txq->tail = 0; 2117 2118 mwl8k_tx_start(priv); 2119 2120 spin_unlock_bh(&priv->tx_lock); 2121 2122 /* Initiate the ampdu session here */ 2123 if (start_ba_session) { 2124 spin_lock(&priv->stream_lock); 2125 if (mwl8k_start_stream(hw, stream)) 2126 mwl8k_remove_stream(hw, stream); 2127 spin_unlock(&priv->stream_lock); 2128 } 2129 } 2130 2131 2132 /* 2133 * Firmware access. 2134 * 2135 * We have the following requirements for issuing firmware commands: 2136 * - Some commands require that the packet transmit path is idle when 2137 * the command is issued. (For simplicity, we'll just quiesce the 2138 * transmit path for every command.) 2139 * - There are certain sequences of commands that need to be issued to 2140 * the hardware sequentially, with no other intervening commands. 2141 * 2142 * This leads to an implementation of a "firmware lock" as a mutex that 2143 * can be taken recursively, and which is taken by both the low-level 2144 * command submission function (mwl8k_post_cmd) as well as any users of 2145 * that function that require issuing of an atomic sequence of commands, 2146 * and quiesces the transmit path whenever it's taken. 2147 */ 2148 static int mwl8k_fw_lock(struct ieee80211_hw *hw) 2149 { 2150 struct mwl8k_priv *priv = hw->priv; 2151 2152 if (priv->fw_mutex_owner != current) { 2153 int rc; 2154 2155 mutex_lock(&priv->fw_mutex); 2156 ieee80211_stop_queues(hw); 2157 2158 rc = mwl8k_tx_wait_empty(hw); 2159 if (rc) { 2160 if (!priv->hw_restart_in_progress) 2161 ieee80211_wake_queues(hw); 2162 2163 mutex_unlock(&priv->fw_mutex); 2164 2165 return rc; 2166 } 2167 2168 priv->fw_mutex_owner = current; 2169 } 2170 2171 priv->fw_mutex_depth++; 2172 2173 return 0; 2174 } 2175 2176 static void mwl8k_fw_unlock(struct ieee80211_hw *hw) 2177 { 2178 struct mwl8k_priv *priv = hw->priv; 2179 2180 if (!--priv->fw_mutex_depth) { 2181 if (!priv->hw_restart_in_progress) 2182 ieee80211_wake_queues(hw); 2183 2184 priv->fw_mutex_owner = NULL; 2185 mutex_unlock(&priv->fw_mutex); 2186 } 2187 } 2188 2189 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, 2190 u32 bitmap); 2191 2192 /* 2193 * Command processing. 2194 */ 2195 2196 /* Timeout firmware commands after 10s */ 2197 #define MWL8K_CMD_TIMEOUT_MS 10000 2198 2199 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) 2200 { 2201 DECLARE_COMPLETION_ONSTACK(cmd_wait); 2202 struct mwl8k_priv *priv = hw->priv; 2203 void __iomem *regs = priv->regs; 2204 dma_addr_t dma_addr; 2205 unsigned int dma_size; 2206 int rc; 2207 unsigned long timeout = 0; 2208 u8 buf[32]; 2209 u32 bitmap = 0; 2210 2211 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", 2212 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); 2213 2214 /* Before posting firmware commands that could change the hardware 2215 * characteristics, make sure that all BSSes are stopped temporary. 2216 * Enable these stopped BSSes after completion of the commands 2217 */ 2218 2219 rc = mwl8k_fw_lock(hw); 2220 if (rc) 2221 return rc; 2222 2223 if (priv->ap_fw && priv->running_bsses) { 2224 switch (le16_to_cpu(cmd->code)) { 2225 case MWL8K_CMD_SET_RF_CHANNEL: 2226 case MWL8K_CMD_RADIO_CONTROL: 2227 case MWL8K_CMD_RF_TX_POWER: 2228 case MWL8K_CMD_TX_POWER: 2229 case MWL8K_CMD_RF_ANTENNA: 2230 case MWL8K_CMD_RTS_THRESHOLD: 2231 case MWL8K_CMD_MIMO_CONFIG: 2232 bitmap = priv->running_bsses; 2233 mwl8k_enable_bsses(hw, false, bitmap); 2234 break; 2235 } 2236 } 2237 2238 cmd->result = (__force __le16) 0xffff; 2239 dma_size = le16_to_cpu(cmd->length); 2240 dma_addr = pci_map_single(priv->pdev, cmd, dma_size, 2241 PCI_DMA_BIDIRECTIONAL); 2242 if (pci_dma_mapping_error(priv->pdev, dma_addr)) { 2243 rc = -ENOMEM; 2244 goto exit; 2245 } 2246 2247 priv->hostcmd_wait = &cmd_wait; 2248 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 2249 iowrite32(MWL8K_H2A_INT_DOORBELL, 2250 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2251 iowrite32(MWL8K_H2A_INT_DUMMY, 2252 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2253 2254 timeout = wait_for_completion_timeout(&cmd_wait, 2255 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); 2256 2257 priv->hostcmd_wait = NULL; 2258 2259 2260 pci_unmap_single(priv->pdev, dma_addr, dma_size, 2261 PCI_DMA_BIDIRECTIONAL); 2262 2263 if (!timeout) { 2264 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", 2265 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2266 MWL8K_CMD_TIMEOUT_MS); 2267 rc = -ETIMEDOUT; 2268 } else { 2269 int ms; 2270 2271 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); 2272 2273 rc = cmd->result ? -EINVAL : 0; 2274 if (rc) 2275 wiphy_err(hw->wiphy, "Command %s error 0x%x\n", 2276 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2277 le16_to_cpu(cmd->result)); 2278 else if (ms > 2000) 2279 wiphy_notice(hw->wiphy, "Command %s took %d ms\n", 2280 mwl8k_cmd_name(cmd->code, 2281 buf, sizeof(buf)), 2282 ms); 2283 } 2284 2285 exit: 2286 if (bitmap) 2287 mwl8k_enable_bsses(hw, true, bitmap); 2288 2289 mwl8k_fw_unlock(hw); 2290 2291 return rc; 2292 } 2293 2294 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, 2295 struct ieee80211_vif *vif, 2296 struct mwl8k_cmd_pkt *cmd) 2297 { 2298 if (vif != NULL) 2299 cmd->macid = MWL8K_VIF(vif)->macid; 2300 return mwl8k_post_cmd(hw, cmd); 2301 } 2302 2303 /* 2304 * Setup code shared between STA and AP firmware images. 2305 */ 2306 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) 2307 { 2308 struct mwl8k_priv *priv = hw->priv; 2309 2310 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); 2311 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); 2312 2313 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); 2314 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); 2315 2316 priv->band_24.band = NL80211_BAND_2GHZ; 2317 priv->band_24.channels = priv->channels_24; 2318 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); 2319 priv->band_24.bitrates = priv->rates_24; 2320 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); 2321 2322 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; 2323 } 2324 2325 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) 2326 { 2327 struct mwl8k_priv *priv = hw->priv; 2328 2329 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); 2330 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); 2331 2332 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); 2333 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); 2334 2335 priv->band_50.band = NL80211_BAND_5GHZ; 2336 priv->band_50.channels = priv->channels_50; 2337 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); 2338 priv->band_50.bitrates = priv->rates_50; 2339 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); 2340 2341 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; 2342 } 2343 2344 /* 2345 * CMD_GET_HW_SPEC (STA version). 2346 */ 2347 struct mwl8k_cmd_get_hw_spec_sta { 2348 struct mwl8k_cmd_pkt header; 2349 __u8 hw_rev; 2350 __u8 host_interface; 2351 __le16 num_mcaddrs; 2352 __u8 perm_addr[ETH_ALEN]; 2353 __le16 region_code; 2354 __le32 fw_rev; 2355 __le32 ps_cookie; 2356 __le32 caps; 2357 __u8 mcs_bitmap[16]; 2358 __le32 rx_queue_ptr; 2359 __le32 num_tx_queues; 2360 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; 2361 __le32 caps2; 2362 __le32 num_tx_desc_per_queue; 2363 __le32 total_rxd; 2364 } __packed; 2365 2366 #define MWL8K_CAP_MAX_AMSDU 0x20000000 2367 #define MWL8K_CAP_GREENFIELD 0x08000000 2368 #define MWL8K_CAP_AMPDU 0x04000000 2369 #define MWL8K_CAP_RX_STBC 0x01000000 2370 #define MWL8K_CAP_TX_STBC 0x00800000 2371 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 2372 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 2373 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 2374 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 2375 #define MWL8K_CAP_DELAY_BA 0x00003000 2376 #define MWL8K_CAP_MIMO 0x00000200 2377 #define MWL8K_CAP_40MHZ 0x00000100 2378 #define MWL8K_CAP_BAND_MASK 0x00000007 2379 #define MWL8K_CAP_5GHZ 0x00000004 2380 #define MWL8K_CAP_2GHZ4 0x00000001 2381 2382 static void 2383 mwl8k_set_ht_caps(struct ieee80211_hw *hw, 2384 struct ieee80211_supported_band *band, u32 cap) 2385 { 2386 int rx_streams; 2387 int tx_streams; 2388 2389 band->ht_cap.ht_supported = 1; 2390 2391 if (cap & MWL8K_CAP_MAX_AMSDU) 2392 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; 2393 if (cap & MWL8K_CAP_GREENFIELD) 2394 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; 2395 if (cap & MWL8K_CAP_AMPDU) { 2396 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2397 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 2398 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 2399 } 2400 if (cap & MWL8K_CAP_RX_STBC) 2401 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; 2402 if (cap & MWL8K_CAP_TX_STBC) 2403 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; 2404 if (cap & MWL8K_CAP_SHORTGI_40MHZ) 2405 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; 2406 if (cap & MWL8K_CAP_SHORTGI_20MHZ) 2407 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; 2408 if (cap & MWL8K_CAP_DELAY_BA) 2409 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; 2410 if (cap & MWL8K_CAP_40MHZ) 2411 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 2412 2413 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); 2414 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); 2415 2416 band->ht_cap.mcs.rx_mask[0] = 0xff; 2417 if (rx_streams >= 2) 2418 band->ht_cap.mcs.rx_mask[1] = 0xff; 2419 if (rx_streams >= 3) 2420 band->ht_cap.mcs.rx_mask[2] = 0xff; 2421 band->ht_cap.mcs.rx_mask[4] = 0x01; 2422 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2423 2424 if (rx_streams != tx_streams) { 2425 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 2426 band->ht_cap.mcs.tx_params |= (tx_streams - 1) << 2427 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; 2428 } 2429 } 2430 2431 static void 2432 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) 2433 { 2434 struct mwl8k_priv *priv = hw->priv; 2435 2436 if (priv->caps) 2437 return; 2438 2439 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { 2440 mwl8k_setup_2ghz_band(hw); 2441 if (caps & MWL8K_CAP_MIMO) 2442 mwl8k_set_ht_caps(hw, &priv->band_24, caps); 2443 } 2444 2445 if (caps & MWL8K_CAP_5GHZ) { 2446 mwl8k_setup_5ghz_band(hw); 2447 if (caps & MWL8K_CAP_MIMO) 2448 mwl8k_set_ht_caps(hw, &priv->band_50, caps); 2449 } 2450 2451 priv->caps = caps; 2452 } 2453 2454 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) 2455 { 2456 struct mwl8k_priv *priv = hw->priv; 2457 struct mwl8k_cmd_get_hw_spec_sta *cmd; 2458 int rc; 2459 int i; 2460 2461 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2462 if (cmd == NULL) 2463 return -ENOMEM; 2464 2465 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2466 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2467 2468 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2469 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2470 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2471 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2472 for (i = 0; i < mwl8k_tx_queues(priv); i++) 2473 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); 2474 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2475 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2476 2477 rc = mwl8k_post_cmd(hw, &cmd->header); 2478 2479 if (!rc) { 2480 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2481 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2482 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2483 priv->hw_rev = cmd->hw_rev; 2484 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2485 priv->ap_macids_supported = 0x00000000; 2486 priv->sta_macids_supported = 0x00000001; 2487 } 2488 2489 kfree(cmd); 2490 return rc; 2491 } 2492 2493 /* 2494 * CMD_GET_HW_SPEC (AP version). 2495 */ 2496 struct mwl8k_cmd_get_hw_spec_ap { 2497 struct mwl8k_cmd_pkt header; 2498 __u8 hw_rev; 2499 __u8 host_interface; 2500 __le16 num_wcb; 2501 __le16 num_mcaddrs; 2502 __u8 perm_addr[ETH_ALEN]; 2503 __le16 region_code; 2504 __le16 num_antenna; 2505 __le32 fw_rev; 2506 __le32 wcbbase0; 2507 __le32 rxwrptr; 2508 __le32 rxrdptr; 2509 __le32 ps_cookie; 2510 __le32 wcbbase1; 2511 __le32 wcbbase2; 2512 __le32 wcbbase3; 2513 __le32 fw_api_version; 2514 __le32 caps; 2515 __le32 num_of_ampdu_queues; 2516 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; 2517 } __packed; 2518 2519 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) 2520 { 2521 struct mwl8k_priv *priv = hw->priv; 2522 struct mwl8k_cmd_get_hw_spec_ap *cmd; 2523 int rc, i; 2524 u32 api_version; 2525 2526 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2527 if (cmd == NULL) 2528 return -ENOMEM; 2529 2530 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2531 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2532 2533 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2534 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2535 2536 rc = mwl8k_post_cmd(hw, &cmd->header); 2537 2538 if (!rc) { 2539 int off; 2540 2541 api_version = le32_to_cpu(cmd->fw_api_version); 2542 if (priv->device_info->fw_api_ap != api_version) { 2543 printk(KERN_ERR "%s: Unsupported fw API version for %s." 2544 " Expected %d got %d.\n", MWL8K_NAME, 2545 priv->device_info->part_name, 2546 priv->device_info->fw_api_ap, 2547 api_version); 2548 rc = -EINVAL; 2549 goto done; 2550 } 2551 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2552 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2553 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2554 priv->hw_rev = cmd->hw_rev; 2555 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2556 priv->ap_macids_supported = 0x000000ff; 2557 priv->sta_macids_supported = 0x00000100; 2558 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); 2559 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { 2560 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" 2561 " but we only support %d.\n", 2562 priv->num_ampdu_queues, 2563 MWL8K_MAX_AMPDU_QUEUES); 2564 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; 2565 } 2566 off = le32_to_cpu(cmd->rxwrptr) & 0xffff; 2567 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2568 2569 off = le32_to_cpu(cmd->rxrdptr) & 0xffff; 2570 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2571 2572 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; 2573 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; 2574 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; 2575 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; 2576 2577 for (i = 0; i < priv->num_ampdu_queues; i++) 2578 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = 2579 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; 2580 } 2581 2582 done: 2583 kfree(cmd); 2584 return rc; 2585 } 2586 2587 /* 2588 * CMD_SET_HW_SPEC. 2589 */ 2590 struct mwl8k_cmd_set_hw_spec { 2591 struct mwl8k_cmd_pkt header; 2592 __u8 hw_rev; 2593 __u8 host_interface; 2594 __le16 num_mcaddrs; 2595 __u8 perm_addr[ETH_ALEN]; 2596 __le16 region_code; 2597 __le32 fw_rev; 2598 __le32 ps_cookie; 2599 __le32 caps; 2600 __le32 rx_queue_ptr; 2601 __le32 num_tx_queues; 2602 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; 2603 __le32 flags; 2604 __le32 num_tx_desc_per_queue; 2605 __le32 total_rxd; 2606 } __packed; 2607 2608 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause 2609 * packets to expire 500 ms after the timestamp in the tx descriptor. That is, 2610 * the packets that are queued for more than 500ms, will be dropped in the 2611 * hardware. This helps minimizing the issues caused due to head-of-line 2612 * blocking where a slow client can hog the bandwidth and affect traffic to a 2613 * faster client. 2614 */ 2615 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 2616 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 2617 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 2618 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 2619 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 2620 2621 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) 2622 { 2623 struct mwl8k_priv *priv = hw->priv; 2624 struct mwl8k_cmd_set_hw_spec *cmd; 2625 int rc; 2626 int i; 2627 2628 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2629 if (cmd == NULL) 2630 return -ENOMEM; 2631 2632 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); 2633 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2634 2635 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2636 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2637 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2638 2639 /* 2640 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in 2641 * that order. Firmware has Q3 as highest priority and Q0 as lowest 2642 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the 2643 * priority is interpreted the right way in firmware. 2644 */ 2645 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 2646 int j = mwl8k_tx_queues(priv) - 1 - i; 2647 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); 2648 } 2649 2650 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | 2651 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | 2652 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | 2653 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | 2654 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); 2655 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2656 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2657 2658 rc = mwl8k_post_cmd(hw, &cmd->header); 2659 kfree(cmd); 2660 2661 return rc; 2662 } 2663 2664 /* 2665 * CMD_MAC_MULTICAST_ADR. 2666 */ 2667 struct mwl8k_cmd_mac_multicast_adr { 2668 struct mwl8k_cmd_pkt header; 2669 __le16 action; 2670 __le16 numaddr; 2671 __u8 addr[][ETH_ALEN]; 2672 }; 2673 2674 #define MWL8K_ENABLE_RX_DIRECTED 0x0001 2675 #define MWL8K_ENABLE_RX_MULTICAST 0x0002 2676 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 2677 #define MWL8K_ENABLE_RX_BROADCAST 0x0008 2678 2679 static struct mwl8k_cmd_pkt * 2680 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, 2681 struct netdev_hw_addr_list *mc_list) 2682 { 2683 struct mwl8k_priv *priv = hw->priv; 2684 struct mwl8k_cmd_mac_multicast_adr *cmd; 2685 int size; 2686 int mc_count = 0; 2687 2688 if (mc_list) 2689 mc_count = netdev_hw_addr_list_count(mc_list); 2690 2691 if (allmulti || mc_count > priv->num_mcaddrs) { 2692 allmulti = 1; 2693 mc_count = 0; 2694 } 2695 2696 size = sizeof(*cmd) + mc_count * ETH_ALEN; 2697 2698 cmd = kzalloc(size, GFP_ATOMIC); 2699 if (cmd == NULL) 2700 return NULL; 2701 2702 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); 2703 cmd->header.length = cpu_to_le16(size); 2704 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | 2705 MWL8K_ENABLE_RX_BROADCAST); 2706 2707 if (allmulti) { 2708 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); 2709 } else if (mc_count) { 2710 struct netdev_hw_addr *ha; 2711 int i = 0; 2712 2713 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); 2714 cmd->numaddr = cpu_to_le16(mc_count); 2715 netdev_hw_addr_list_for_each(ha, mc_list) { 2716 memcpy(cmd->addr[i], ha->addr, ETH_ALEN); 2717 } 2718 } 2719 2720 return &cmd->header; 2721 } 2722 2723 /* 2724 * CMD_GET_STAT. 2725 */ 2726 struct mwl8k_cmd_get_stat { 2727 struct mwl8k_cmd_pkt header; 2728 __le32 stats[64]; 2729 } __packed; 2730 2731 #define MWL8K_STAT_ACK_FAILURE 9 2732 #define MWL8K_STAT_RTS_FAILURE 12 2733 #define MWL8K_STAT_FCS_ERROR 24 2734 #define MWL8K_STAT_RTS_SUCCESS 11 2735 2736 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, 2737 struct ieee80211_low_level_stats *stats) 2738 { 2739 struct mwl8k_cmd_get_stat *cmd; 2740 int rc; 2741 2742 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2743 if (cmd == NULL) 2744 return -ENOMEM; 2745 2746 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); 2747 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2748 2749 rc = mwl8k_post_cmd(hw, &cmd->header); 2750 if (!rc) { 2751 stats->dot11ACKFailureCount = 2752 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); 2753 stats->dot11RTSFailureCount = 2754 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); 2755 stats->dot11FCSErrorCount = 2756 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); 2757 stats->dot11RTSSuccessCount = 2758 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); 2759 } 2760 kfree(cmd); 2761 2762 return rc; 2763 } 2764 2765 /* 2766 * CMD_RADIO_CONTROL. 2767 */ 2768 struct mwl8k_cmd_radio_control { 2769 struct mwl8k_cmd_pkt header; 2770 __le16 action; 2771 __le16 control; 2772 __le16 radio_on; 2773 } __packed; 2774 2775 static int 2776 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) 2777 { 2778 struct mwl8k_priv *priv = hw->priv; 2779 struct mwl8k_cmd_radio_control *cmd; 2780 int rc; 2781 2782 if (enable == priv->radio_on && !force) 2783 return 0; 2784 2785 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2786 if (cmd == NULL) 2787 return -ENOMEM; 2788 2789 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); 2790 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2791 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2792 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); 2793 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); 2794 2795 rc = mwl8k_post_cmd(hw, &cmd->header); 2796 kfree(cmd); 2797 2798 if (!rc) 2799 priv->radio_on = enable; 2800 2801 return rc; 2802 } 2803 2804 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) 2805 { 2806 return mwl8k_cmd_radio_control(hw, 0, 0); 2807 } 2808 2809 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) 2810 { 2811 return mwl8k_cmd_radio_control(hw, 1, 0); 2812 } 2813 2814 static int 2815 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) 2816 { 2817 struct mwl8k_priv *priv = hw->priv; 2818 2819 priv->radio_short_preamble = short_preamble; 2820 2821 return mwl8k_cmd_radio_control(hw, 1, 1); 2822 } 2823 2824 /* 2825 * CMD_RF_TX_POWER. 2826 */ 2827 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 2828 2829 struct mwl8k_cmd_rf_tx_power { 2830 struct mwl8k_cmd_pkt header; 2831 __le16 action; 2832 __le16 support_level; 2833 __le16 current_level; 2834 __le16 reserved; 2835 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; 2836 } __packed; 2837 2838 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) 2839 { 2840 struct mwl8k_cmd_rf_tx_power *cmd; 2841 int rc; 2842 2843 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2844 if (cmd == NULL) 2845 return -ENOMEM; 2846 2847 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); 2848 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2849 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2850 cmd->support_level = cpu_to_le16(dBm); 2851 2852 rc = mwl8k_post_cmd(hw, &cmd->header); 2853 kfree(cmd); 2854 2855 return rc; 2856 } 2857 2858 /* 2859 * CMD_TX_POWER. 2860 */ 2861 #define MWL8K_TX_POWER_LEVEL_TOTAL 12 2862 2863 struct mwl8k_cmd_tx_power { 2864 struct mwl8k_cmd_pkt header; 2865 __le16 action; 2866 __le16 band; 2867 __le16 channel; 2868 __le16 bw; 2869 __le16 sub_ch; 2870 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; 2871 } __packed; 2872 2873 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, 2874 struct ieee80211_conf *conf, 2875 unsigned short pwr) 2876 { 2877 struct ieee80211_channel *channel = conf->chandef.chan; 2878 enum nl80211_channel_type channel_type = 2879 cfg80211_get_chandef_type(&conf->chandef); 2880 struct mwl8k_cmd_tx_power *cmd; 2881 int rc; 2882 int i; 2883 2884 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2885 if (cmd == NULL) 2886 return -ENOMEM; 2887 2888 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); 2889 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2890 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); 2891 2892 if (channel->band == NL80211_BAND_2GHZ) 2893 cmd->band = cpu_to_le16(0x1); 2894 else if (channel->band == NL80211_BAND_5GHZ) 2895 cmd->band = cpu_to_le16(0x4); 2896 2897 cmd->channel = cpu_to_le16(channel->hw_value); 2898 2899 if (channel_type == NL80211_CHAN_NO_HT || 2900 channel_type == NL80211_CHAN_HT20) { 2901 cmd->bw = cpu_to_le16(0x2); 2902 } else { 2903 cmd->bw = cpu_to_le16(0x4); 2904 if (channel_type == NL80211_CHAN_HT40MINUS) 2905 cmd->sub_ch = cpu_to_le16(0x3); 2906 else if (channel_type == NL80211_CHAN_HT40PLUS) 2907 cmd->sub_ch = cpu_to_le16(0x1); 2908 } 2909 2910 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) 2911 cmd->power_level_list[i] = cpu_to_le16(pwr); 2912 2913 rc = mwl8k_post_cmd(hw, &cmd->header); 2914 kfree(cmd); 2915 2916 return rc; 2917 } 2918 2919 /* 2920 * CMD_RF_ANTENNA. 2921 */ 2922 struct mwl8k_cmd_rf_antenna { 2923 struct mwl8k_cmd_pkt header; 2924 __le16 antenna; 2925 __le16 mode; 2926 } __packed; 2927 2928 #define MWL8K_RF_ANTENNA_RX 1 2929 #define MWL8K_RF_ANTENNA_TX 2 2930 2931 static int 2932 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) 2933 { 2934 struct mwl8k_cmd_rf_antenna *cmd; 2935 int rc; 2936 2937 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2938 if (cmd == NULL) 2939 return -ENOMEM; 2940 2941 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); 2942 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2943 cmd->antenna = cpu_to_le16(antenna); 2944 cmd->mode = cpu_to_le16(mask); 2945 2946 rc = mwl8k_post_cmd(hw, &cmd->header); 2947 kfree(cmd); 2948 2949 return rc; 2950 } 2951 2952 /* 2953 * CMD_SET_BEACON. 2954 */ 2955 struct mwl8k_cmd_set_beacon { 2956 struct mwl8k_cmd_pkt header; 2957 __le16 beacon_len; 2958 __u8 beacon[]; 2959 }; 2960 2961 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, 2962 struct ieee80211_vif *vif, u8 *beacon, int len) 2963 { 2964 struct mwl8k_cmd_set_beacon *cmd; 2965 int rc; 2966 2967 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); 2968 if (cmd == NULL) 2969 return -ENOMEM; 2970 2971 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); 2972 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); 2973 cmd->beacon_len = cpu_to_le16(len); 2974 memcpy(cmd->beacon, beacon, len); 2975 2976 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 2977 kfree(cmd); 2978 2979 return rc; 2980 } 2981 2982 /* 2983 * CMD_SET_PRE_SCAN. 2984 */ 2985 struct mwl8k_cmd_set_pre_scan { 2986 struct mwl8k_cmd_pkt header; 2987 } __packed; 2988 2989 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) 2990 { 2991 struct mwl8k_cmd_set_pre_scan *cmd; 2992 int rc; 2993 2994 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2995 if (cmd == NULL) 2996 return -ENOMEM; 2997 2998 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); 2999 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3000 3001 rc = mwl8k_post_cmd(hw, &cmd->header); 3002 kfree(cmd); 3003 3004 return rc; 3005 } 3006 3007 /* 3008 * CMD_BBP_REG_ACCESS. 3009 */ 3010 struct mwl8k_cmd_bbp_reg_access { 3011 struct mwl8k_cmd_pkt header; 3012 __le16 action; 3013 __le16 offset; 3014 u8 value; 3015 u8 rsrv[3]; 3016 } __packed; 3017 3018 static int 3019 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, 3020 u16 action, 3021 u16 offset, 3022 u8 *value) 3023 { 3024 struct mwl8k_cmd_bbp_reg_access *cmd; 3025 int rc; 3026 3027 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3028 if (cmd == NULL) 3029 return -ENOMEM; 3030 3031 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); 3032 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3033 cmd->action = cpu_to_le16(action); 3034 cmd->offset = cpu_to_le16(offset); 3035 3036 rc = mwl8k_post_cmd(hw, &cmd->header); 3037 3038 if (!rc) 3039 *value = cmd->value; 3040 else 3041 *value = 0; 3042 3043 kfree(cmd); 3044 3045 return rc; 3046 } 3047 3048 /* 3049 * CMD_SET_POST_SCAN. 3050 */ 3051 struct mwl8k_cmd_set_post_scan { 3052 struct mwl8k_cmd_pkt header; 3053 __le32 isibss; 3054 __u8 bssid[ETH_ALEN]; 3055 } __packed; 3056 3057 static int 3058 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) 3059 { 3060 struct mwl8k_cmd_set_post_scan *cmd; 3061 int rc; 3062 3063 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3064 if (cmd == NULL) 3065 return -ENOMEM; 3066 3067 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); 3068 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3069 cmd->isibss = 0; 3070 memcpy(cmd->bssid, mac, ETH_ALEN); 3071 3072 rc = mwl8k_post_cmd(hw, &cmd->header); 3073 kfree(cmd); 3074 3075 return rc; 3076 } 3077 3078 static int freq_to_idx(struct mwl8k_priv *priv, int freq) 3079 { 3080 struct ieee80211_supported_band *sband; 3081 int band, ch, idx = 0; 3082 3083 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { 3084 sband = priv->hw->wiphy->bands[band]; 3085 if (!sband) 3086 continue; 3087 3088 for (ch = 0; ch < sband->n_channels; ch++, idx++) 3089 if (sband->channels[ch].center_freq == freq) 3090 goto exit; 3091 } 3092 3093 exit: 3094 return idx; 3095 } 3096 3097 static void mwl8k_update_survey(struct mwl8k_priv *priv, 3098 struct ieee80211_channel *channel) 3099 { 3100 u32 cca_cnt, rx_rdy; 3101 s8 nf = 0, idx; 3102 struct survey_info *survey; 3103 3104 idx = freq_to_idx(priv, priv->acs_chan->center_freq); 3105 if (idx >= MWL8K_NUM_CHANS) { 3106 wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); 3107 return; 3108 } 3109 3110 survey = &priv->survey[idx]; 3111 3112 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); 3113 cca_cnt /= 1000; /* uSecs to mSecs */ 3114 survey->time_busy = (u64) cca_cnt; 3115 3116 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); 3117 rx_rdy /= 1000; /* uSecs to mSecs */ 3118 survey->time_rx = (u64) rx_rdy; 3119 3120 priv->channel_time = jiffies - priv->channel_time; 3121 survey->time = jiffies_to_msecs(priv->channel_time); 3122 3123 survey->channel = channel; 3124 3125 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); 3126 3127 /* Make sure sign is negative else ACS at hostapd fails */ 3128 survey->noise = nf * -1; 3129 3130 survey->filled = SURVEY_INFO_NOISE_DBM | 3131 SURVEY_INFO_TIME | 3132 SURVEY_INFO_TIME_BUSY | 3133 SURVEY_INFO_TIME_RX; 3134 } 3135 3136 /* 3137 * CMD_SET_RF_CHANNEL. 3138 */ 3139 struct mwl8k_cmd_set_rf_channel { 3140 struct mwl8k_cmd_pkt header; 3141 __le16 action; 3142 __u8 current_channel; 3143 __le32 channel_flags; 3144 } __packed; 3145 3146 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, 3147 struct ieee80211_conf *conf) 3148 { 3149 struct ieee80211_channel *channel = conf->chandef.chan; 3150 enum nl80211_channel_type channel_type = 3151 cfg80211_get_chandef_type(&conf->chandef); 3152 struct mwl8k_cmd_set_rf_channel *cmd; 3153 struct mwl8k_priv *priv = hw->priv; 3154 int rc; 3155 3156 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3157 if (cmd == NULL) 3158 return -ENOMEM; 3159 3160 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); 3161 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3162 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3163 cmd->current_channel = channel->hw_value; 3164 3165 if (channel->band == NL80211_BAND_2GHZ) 3166 cmd->channel_flags |= cpu_to_le32(0x00000001); 3167 else if (channel->band == NL80211_BAND_5GHZ) 3168 cmd->channel_flags |= cpu_to_le32(0x00000004); 3169 3170 if (!priv->sw_scan_start) { 3171 if (channel_type == NL80211_CHAN_NO_HT || 3172 channel_type == NL80211_CHAN_HT20) 3173 cmd->channel_flags |= cpu_to_le32(0x00000080); 3174 else if (channel_type == NL80211_CHAN_HT40MINUS) 3175 cmd->channel_flags |= cpu_to_le32(0x000001900); 3176 else if (channel_type == NL80211_CHAN_HT40PLUS) 3177 cmd->channel_flags |= cpu_to_le32(0x000000900); 3178 } else { 3179 cmd->channel_flags |= cpu_to_le32(0x00000080); 3180 } 3181 3182 if (priv->sw_scan_start) { 3183 /* Store current channel stats 3184 * before switching to newer one. 3185 * This will be processed only for AP fw. 3186 */ 3187 if (priv->channel_time != 0) 3188 mwl8k_update_survey(priv, priv->acs_chan); 3189 3190 priv->channel_time = jiffies; 3191 priv->acs_chan = channel; 3192 } 3193 3194 rc = mwl8k_post_cmd(hw, &cmd->header); 3195 kfree(cmd); 3196 3197 return rc; 3198 } 3199 3200 /* 3201 * CMD_SET_AID. 3202 */ 3203 #define MWL8K_FRAME_PROT_DISABLED 0x00 3204 #define MWL8K_FRAME_PROT_11G 0x07 3205 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 3206 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 3207 3208 struct mwl8k_cmd_update_set_aid { 3209 struct mwl8k_cmd_pkt header; 3210 __le16 aid; 3211 3212 /* AP's MAC address (BSSID) */ 3213 __u8 bssid[ETH_ALEN]; 3214 __le16 protection_mode; 3215 __u8 supp_rates[14]; 3216 } __packed; 3217 3218 static void legacy_rate_mask_to_array(u8 *rates, u32 mask) 3219 { 3220 int i; 3221 int j; 3222 3223 /* 3224 * Clear nonstandard rate 4. 3225 */ 3226 mask &= 0x1fef; 3227 3228 for (i = 0, j = 0; i < 13; i++) { 3229 if (mask & (1 << i)) 3230 rates[j++] = mwl8k_rates_24[i].hw_value; 3231 } 3232 } 3233 3234 static int 3235 mwl8k_cmd_set_aid(struct ieee80211_hw *hw, 3236 struct ieee80211_vif *vif, u32 legacy_rate_mask) 3237 { 3238 struct mwl8k_cmd_update_set_aid *cmd; 3239 u16 prot_mode; 3240 int rc; 3241 3242 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3243 if (cmd == NULL) 3244 return -ENOMEM; 3245 3246 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); 3247 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3248 cmd->aid = cpu_to_le16(vif->bss_conf.aid); 3249 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 3250 3251 if (vif->bss_conf.use_cts_prot) { 3252 prot_mode = MWL8K_FRAME_PROT_11G; 3253 } else { 3254 switch (vif->bss_conf.ht_operation_mode & 3255 IEEE80211_HT_OP_MODE_PROTECTION) { 3256 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 3257 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; 3258 break; 3259 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 3260 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; 3261 break; 3262 default: 3263 prot_mode = MWL8K_FRAME_PROT_DISABLED; 3264 break; 3265 } 3266 } 3267 cmd->protection_mode = cpu_to_le16(prot_mode); 3268 3269 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); 3270 3271 rc = mwl8k_post_cmd(hw, &cmd->header); 3272 kfree(cmd); 3273 3274 return rc; 3275 } 3276 3277 /* 3278 * CMD_SET_RATE. 3279 */ 3280 struct mwl8k_cmd_set_rate { 3281 struct mwl8k_cmd_pkt header; 3282 __u8 legacy_rates[14]; 3283 3284 /* Bitmap for supported MCS codes. */ 3285 __u8 mcs_set[16]; 3286 __u8 reserved[16]; 3287 } __packed; 3288 3289 static int 3290 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3291 u32 legacy_rate_mask, u8 *mcs_rates) 3292 { 3293 struct mwl8k_cmd_set_rate *cmd; 3294 int rc; 3295 3296 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3297 if (cmd == NULL) 3298 return -ENOMEM; 3299 3300 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); 3301 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3302 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); 3303 memcpy(cmd->mcs_set, mcs_rates, 16); 3304 3305 rc = mwl8k_post_cmd(hw, &cmd->header); 3306 kfree(cmd); 3307 3308 return rc; 3309 } 3310 3311 /* 3312 * CMD_FINALIZE_JOIN. 3313 */ 3314 #define MWL8K_FJ_BEACON_MAXLEN 128 3315 3316 struct mwl8k_cmd_finalize_join { 3317 struct mwl8k_cmd_pkt header; 3318 __le32 sleep_interval; /* Number of beacon periods to sleep */ 3319 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; 3320 } __packed; 3321 3322 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, 3323 int framelen, int dtim) 3324 { 3325 struct mwl8k_cmd_finalize_join *cmd; 3326 struct ieee80211_mgmt *payload = frame; 3327 int payload_len; 3328 int rc; 3329 3330 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3331 if (cmd == NULL) 3332 return -ENOMEM; 3333 3334 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); 3335 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3336 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); 3337 3338 payload_len = framelen - ieee80211_hdrlen(payload->frame_control); 3339 if (payload_len < 0) 3340 payload_len = 0; 3341 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) 3342 payload_len = MWL8K_FJ_BEACON_MAXLEN; 3343 3344 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); 3345 3346 rc = mwl8k_post_cmd(hw, &cmd->header); 3347 kfree(cmd); 3348 3349 return rc; 3350 } 3351 3352 /* 3353 * CMD_SET_RTS_THRESHOLD. 3354 */ 3355 struct mwl8k_cmd_set_rts_threshold { 3356 struct mwl8k_cmd_pkt header; 3357 __le16 action; 3358 __le16 threshold; 3359 } __packed; 3360 3361 static int 3362 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) 3363 { 3364 struct mwl8k_cmd_set_rts_threshold *cmd; 3365 int rc; 3366 3367 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3368 if (cmd == NULL) 3369 return -ENOMEM; 3370 3371 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); 3372 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3373 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3374 cmd->threshold = cpu_to_le16(rts_thresh); 3375 3376 rc = mwl8k_post_cmd(hw, &cmd->header); 3377 kfree(cmd); 3378 3379 return rc; 3380 } 3381 3382 /* 3383 * CMD_SET_SLOT. 3384 */ 3385 struct mwl8k_cmd_set_slot { 3386 struct mwl8k_cmd_pkt header; 3387 __le16 action; 3388 __u8 short_slot; 3389 } __packed; 3390 3391 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) 3392 { 3393 struct mwl8k_cmd_set_slot *cmd; 3394 int rc; 3395 3396 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3397 if (cmd == NULL) 3398 return -ENOMEM; 3399 3400 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); 3401 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3402 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3403 cmd->short_slot = short_slot_time; 3404 3405 rc = mwl8k_post_cmd(hw, &cmd->header); 3406 kfree(cmd); 3407 3408 return rc; 3409 } 3410 3411 /* 3412 * CMD_SET_EDCA_PARAMS. 3413 */ 3414 struct mwl8k_cmd_set_edca_params { 3415 struct mwl8k_cmd_pkt header; 3416 3417 /* See MWL8K_SET_EDCA_XXX below */ 3418 __le16 action; 3419 3420 /* TX opportunity in units of 32 us */ 3421 __le16 txop; 3422 3423 union { 3424 struct { 3425 /* Log exponent of max contention period: 0...15 */ 3426 __le32 log_cw_max; 3427 3428 /* Log exponent of min contention period: 0...15 */ 3429 __le32 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 } ap; 3437 struct { 3438 /* Log exponent of max contention period: 0...15 */ 3439 __u8 log_cw_max; 3440 3441 /* Log exponent of min contention period: 0...15 */ 3442 __u8 log_cw_min; 3443 3444 /* Adaptive interframe spacing in units of 32us */ 3445 __u8 aifs; 3446 3447 /* TX queue to configure */ 3448 __u8 txq; 3449 } sta; 3450 }; 3451 } __packed; 3452 3453 #define MWL8K_SET_EDCA_CW 0x01 3454 #define MWL8K_SET_EDCA_TXOP 0x02 3455 #define MWL8K_SET_EDCA_AIFS 0x04 3456 3457 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ 3458 MWL8K_SET_EDCA_TXOP | \ 3459 MWL8K_SET_EDCA_AIFS) 3460 3461 static int 3462 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, 3463 __u16 cw_min, __u16 cw_max, 3464 __u8 aifs, __u16 txop) 3465 { 3466 struct mwl8k_priv *priv = hw->priv; 3467 struct mwl8k_cmd_set_edca_params *cmd; 3468 int rc; 3469 3470 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3471 if (cmd == NULL) 3472 return -ENOMEM; 3473 3474 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); 3475 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3476 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); 3477 cmd->txop = cpu_to_le16(txop); 3478 if (priv->ap_fw) { 3479 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); 3480 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); 3481 cmd->ap.aifs = aifs; 3482 cmd->ap.txq = qnum; 3483 } else { 3484 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); 3485 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); 3486 cmd->sta.aifs = aifs; 3487 cmd->sta.txq = qnum; 3488 } 3489 3490 rc = mwl8k_post_cmd(hw, &cmd->header); 3491 kfree(cmd); 3492 3493 return rc; 3494 } 3495 3496 /* 3497 * CMD_SET_WMM_MODE. 3498 */ 3499 struct mwl8k_cmd_set_wmm_mode { 3500 struct mwl8k_cmd_pkt header; 3501 __le16 action; 3502 } __packed; 3503 3504 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) 3505 { 3506 struct mwl8k_priv *priv = hw->priv; 3507 struct mwl8k_cmd_set_wmm_mode *cmd; 3508 int rc; 3509 3510 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3511 if (cmd == NULL) 3512 return -ENOMEM; 3513 3514 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); 3515 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3516 cmd->action = cpu_to_le16(!!enable); 3517 3518 rc = mwl8k_post_cmd(hw, &cmd->header); 3519 kfree(cmd); 3520 3521 if (!rc) 3522 priv->wmm_enabled = enable; 3523 3524 return rc; 3525 } 3526 3527 /* 3528 * CMD_MIMO_CONFIG. 3529 */ 3530 struct mwl8k_cmd_mimo_config { 3531 struct mwl8k_cmd_pkt header; 3532 __le32 action; 3533 __u8 rx_antenna_map; 3534 __u8 tx_antenna_map; 3535 } __packed; 3536 3537 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) 3538 { 3539 struct mwl8k_cmd_mimo_config *cmd; 3540 int rc; 3541 3542 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3543 if (cmd == NULL) 3544 return -ENOMEM; 3545 3546 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); 3547 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3548 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); 3549 cmd->rx_antenna_map = rx; 3550 cmd->tx_antenna_map = tx; 3551 3552 rc = mwl8k_post_cmd(hw, &cmd->header); 3553 kfree(cmd); 3554 3555 return rc; 3556 } 3557 3558 /* 3559 * CMD_USE_FIXED_RATE (STA version). 3560 */ 3561 struct mwl8k_cmd_use_fixed_rate_sta { 3562 struct mwl8k_cmd_pkt header; 3563 __le32 action; 3564 __le32 allow_rate_drop; 3565 __le32 num_rates; 3566 struct { 3567 __le32 is_ht_rate; 3568 __le32 enable_retry; 3569 __le32 rate; 3570 __le32 retry_count; 3571 } rate_entry[8]; 3572 __le32 rate_type; 3573 __le32 reserved1; 3574 __le32 reserved2; 3575 } __packed; 3576 3577 #define MWL8K_USE_AUTO_RATE 0x0002 3578 #define MWL8K_UCAST_RATE 0 3579 3580 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) 3581 { 3582 struct mwl8k_cmd_use_fixed_rate_sta *cmd; 3583 int rc; 3584 3585 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3586 if (cmd == NULL) 3587 return -ENOMEM; 3588 3589 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3590 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3591 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3592 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); 3593 3594 rc = mwl8k_post_cmd(hw, &cmd->header); 3595 kfree(cmd); 3596 3597 return rc; 3598 } 3599 3600 /* 3601 * CMD_USE_FIXED_RATE (AP version). 3602 */ 3603 struct mwl8k_cmd_use_fixed_rate_ap { 3604 struct mwl8k_cmd_pkt header; 3605 __le32 action; 3606 __le32 allow_rate_drop; 3607 __le32 num_rates; 3608 struct mwl8k_rate_entry_ap { 3609 __le32 is_ht_rate; 3610 __le32 enable_retry; 3611 __le32 rate; 3612 __le32 retry_count; 3613 } rate_entry[4]; 3614 u8 multicast_rate; 3615 u8 multicast_rate_type; 3616 u8 management_rate; 3617 } __packed; 3618 3619 static int 3620 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) 3621 { 3622 struct mwl8k_cmd_use_fixed_rate_ap *cmd; 3623 int rc; 3624 3625 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3626 if (cmd == NULL) 3627 return -ENOMEM; 3628 3629 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3630 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3631 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3632 cmd->multicast_rate = mcast; 3633 cmd->management_rate = mgmt; 3634 3635 rc = mwl8k_post_cmd(hw, &cmd->header); 3636 kfree(cmd); 3637 3638 return rc; 3639 } 3640 3641 /* 3642 * CMD_ENABLE_SNIFFER. 3643 */ 3644 struct mwl8k_cmd_enable_sniffer { 3645 struct mwl8k_cmd_pkt header; 3646 __le32 action; 3647 } __packed; 3648 3649 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) 3650 { 3651 struct mwl8k_cmd_enable_sniffer *cmd; 3652 int rc; 3653 3654 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3655 if (cmd == NULL) 3656 return -ENOMEM; 3657 3658 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); 3659 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3660 cmd->action = cpu_to_le32(!!enable); 3661 3662 rc = mwl8k_post_cmd(hw, &cmd->header); 3663 kfree(cmd); 3664 3665 return rc; 3666 } 3667 3668 struct mwl8k_cmd_update_mac_addr { 3669 struct mwl8k_cmd_pkt header; 3670 union { 3671 struct { 3672 __le16 mac_type; 3673 __u8 mac_addr[ETH_ALEN]; 3674 } mbss; 3675 __u8 mac_addr[ETH_ALEN]; 3676 }; 3677 } __packed; 3678 3679 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 3680 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 3681 #define MWL8K_MAC_TYPE_PRIMARY_AP 2 3682 #define MWL8K_MAC_TYPE_SECONDARY_AP 3 3683 3684 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, 3685 struct ieee80211_vif *vif, u8 *mac, bool set) 3686 { 3687 struct mwl8k_priv *priv = hw->priv; 3688 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3689 struct mwl8k_cmd_update_mac_addr *cmd; 3690 int mac_type; 3691 int rc; 3692 3693 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3694 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { 3695 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) 3696 if (priv->ap_fw) 3697 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3698 else 3699 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; 3700 else 3701 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3702 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { 3703 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) 3704 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3705 else 3706 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; 3707 } 3708 3709 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3710 if (cmd == NULL) 3711 return -ENOMEM; 3712 3713 if (set) 3714 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); 3715 else 3716 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); 3717 3718 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3719 if (priv->ap_fw) { 3720 cmd->mbss.mac_type = cpu_to_le16(mac_type); 3721 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); 3722 } else { 3723 memcpy(cmd->mac_addr, mac, ETH_ALEN); 3724 } 3725 3726 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3727 kfree(cmd); 3728 3729 return rc; 3730 } 3731 3732 /* 3733 * MWL8K_CMD_SET_MAC_ADDR. 3734 */ 3735 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, 3736 struct ieee80211_vif *vif, u8 *mac) 3737 { 3738 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); 3739 } 3740 3741 /* 3742 * MWL8K_CMD_DEL_MAC_ADDR. 3743 */ 3744 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, 3745 struct ieee80211_vif *vif, u8 *mac) 3746 { 3747 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); 3748 } 3749 3750 /* 3751 * CMD_SET_RATEADAPT_MODE. 3752 */ 3753 struct mwl8k_cmd_set_rate_adapt_mode { 3754 struct mwl8k_cmd_pkt header; 3755 __le16 action; 3756 __le16 mode; 3757 } __packed; 3758 3759 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) 3760 { 3761 struct mwl8k_cmd_set_rate_adapt_mode *cmd; 3762 int rc; 3763 3764 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3765 if (cmd == NULL) 3766 return -ENOMEM; 3767 3768 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); 3769 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3770 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3771 cmd->mode = cpu_to_le16(mode); 3772 3773 rc = mwl8k_post_cmd(hw, &cmd->header); 3774 kfree(cmd); 3775 3776 return rc; 3777 } 3778 3779 /* 3780 * CMD_GET_WATCHDOG_BITMAP. 3781 */ 3782 struct mwl8k_cmd_get_watchdog_bitmap { 3783 struct mwl8k_cmd_pkt header; 3784 u8 bitmap; 3785 } __packed; 3786 3787 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) 3788 { 3789 struct mwl8k_cmd_get_watchdog_bitmap *cmd; 3790 int rc; 3791 3792 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3793 if (cmd == NULL) 3794 return -ENOMEM; 3795 3796 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); 3797 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3798 3799 rc = mwl8k_post_cmd(hw, &cmd->header); 3800 if (!rc) 3801 *bitmap = cmd->bitmap; 3802 3803 kfree(cmd); 3804 3805 return rc; 3806 } 3807 3808 #define MWL8K_WMM_QUEUE_NUMBER 3 3809 3810 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 3811 u8 idx); 3812 3813 static void mwl8k_watchdog_ba_events(struct work_struct *work) 3814 { 3815 int rc; 3816 u8 bitmap = 0, stream_index; 3817 struct mwl8k_ampdu_stream *streams; 3818 struct mwl8k_priv *priv = 3819 container_of(work, struct mwl8k_priv, watchdog_ba_handle); 3820 struct ieee80211_hw *hw = priv->hw; 3821 int i; 3822 u32 status = 0; 3823 3824 mwl8k_fw_lock(hw); 3825 3826 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); 3827 if (rc) 3828 goto done; 3829 3830 spin_lock(&priv->stream_lock); 3831 3832 /* the bitmap is the hw queue number. Map it to the ampdu queue. */ 3833 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { 3834 if (bitmap & (1 << i)) { 3835 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % 3836 TOTAL_HW_TX_QUEUES; 3837 streams = &priv->ampdu[stream_index]; 3838 if (streams->state == AMPDU_STREAM_ACTIVE) { 3839 ieee80211_stop_tx_ba_session(streams->sta, 3840 streams->tid); 3841 spin_unlock(&priv->stream_lock); 3842 mwl8k_destroy_ba(hw, stream_index); 3843 spin_lock(&priv->stream_lock); 3844 } 3845 } 3846 } 3847 3848 spin_unlock(&priv->stream_lock); 3849 done: 3850 atomic_dec(&priv->watchdog_event_pending); 3851 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3852 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), 3853 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3854 mwl8k_fw_unlock(hw); 3855 return; 3856 } 3857 3858 3859 /* 3860 * CMD_BSS_START. 3861 */ 3862 struct mwl8k_cmd_bss_start { 3863 struct mwl8k_cmd_pkt header; 3864 __le32 enable; 3865 } __packed; 3866 3867 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 3868 struct ieee80211_vif *vif, int enable) 3869 { 3870 struct mwl8k_cmd_bss_start *cmd; 3871 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3872 struct mwl8k_priv *priv = hw->priv; 3873 int rc; 3874 3875 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) 3876 return 0; 3877 3878 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) 3879 return 0; 3880 3881 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3882 if (cmd == NULL) 3883 return -ENOMEM; 3884 3885 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); 3886 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3887 cmd->enable = cpu_to_le32(enable); 3888 3889 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3890 kfree(cmd); 3891 3892 if (!rc) { 3893 if (enable) 3894 priv->running_bsses |= (1 << mwl8k_vif->macid); 3895 else 3896 priv->running_bsses &= ~(1 << mwl8k_vif->macid); 3897 } 3898 return rc; 3899 } 3900 3901 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) 3902 { 3903 struct mwl8k_priv *priv = hw->priv; 3904 struct mwl8k_vif *mwl8k_vif, *tmp_vif; 3905 struct ieee80211_vif *vif; 3906 3907 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { 3908 vif = mwl8k_vif->vif; 3909 3910 if (!(bitmap & (1 << mwl8k_vif->macid))) 3911 continue; 3912 3913 if (vif->type == NL80211_IFTYPE_AP) 3914 mwl8k_cmd_bss_start(hw, vif, enable); 3915 } 3916 } 3917 /* 3918 * CMD_BASTREAM. 3919 */ 3920 3921 /* 3922 * UPSTREAM is tx direction 3923 */ 3924 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 3925 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 3926 3927 enum ba_stream_action_type { 3928 MWL8K_BA_CREATE, 3929 MWL8K_BA_UPDATE, 3930 MWL8K_BA_DESTROY, 3931 MWL8K_BA_FLUSH, 3932 MWL8K_BA_CHECK, 3933 }; 3934 3935 3936 struct mwl8k_create_ba_stream { 3937 __le32 flags; 3938 __le32 idle_thrs; 3939 __le32 bar_thrs; 3940 __le32 window_size; 3941 u8 peer_mac_addr[6]; 3942 u8 dialog_token; 3943 u8 tid; 3944 u8 queue_id; 3945 u8 param_info; 3946 __le32 ba_context; 3947 u8 reset_seq_no_flag; 3948 __le16 curr_seq_no; 3949 u8 sta_src_mac_addr[6]; 3950 } __packed; 3951 3952 struct mwl8k_destroy_ba_stream { 3953 __le32 flags; 3954 __le32 ba_context; 3955 } __packed; 3956 3957 struct mwl8k_cmd_bastream { 3958 struct mwl8k_cmd_pkt header; 3959 __le32 action; 3960 union { 3961 struct mwl8k_create_ba_stream create_params; 3962 struct mwl8k_destroy_ba_stream destroy_params; 3963 }; 3964 } __packed; 3965 3966 static int 3967 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 3968 struct ieee80211_vif *vif) 3969 { 3970 struct mwl8k_cmd_bastream *cmd; 3971 int rc; 3972 3973 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3974 if (cmd == NULL) 3975 return -ENOMEM; 3976 3977 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 3978 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3979 3980 cmd->action = cpu_to_le32(MWL8K_BA_CHECK); 3981 3982 cmd->create_params.queue_id = stream->idx; 3983 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, 3984 ETH_ALEN); 3985 cmd->create_params.tid = stream->tid; 3986 3987 cmd->create_params.flags = 3988 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | 3989 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); 3990 3991 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3992 3993 kfree(cmd); 3994 3995 return rc; 3996 } 3997 3998 static int 3999 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 4000 u8 buf_size, struct ieee80211_vif *vif) 4001 { 4002 struct mwl8k_cmd_bastream *cmd; 4003 int rc; 4004 4005 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4006 if (cmd == NULL) 4007 return -ENOMEM; 4008 4009 4010 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4011 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4012 4013 cmd->action = cpu_to_le32(MWL8K_BA_CREATE); 4014 4015 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); 4016 cmd->create_params.window_size = cpu_to_le32((u32)buf_size); 4017 cmd->create_params.queue_id = stream->idx; 4018 4019 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); 4020 cmd->create_params.tid = stream->tid; 4021 cmd->create_params.curr_seq_no = cpu_to_le16(0); 4022 cmd->create_params.reset_seq_no_flag = 1; 4023 4024 cmd->create_params.param_info = 4025 (stream->sta->ht_cap.ampdu_factor & 4026 IEEE80211_HT_AMPDU_PARM_FACTOR) | 4027 ((stream->sta->ht_cap.ampdu_density << 2) & 4028 IEEE80211_HT_AMPDU_PARM_DENSITY); 4029 4030 cmd->create_params.flags = 4031 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | 4032 BASTREAM_FLAG_DIRECTION_UPSTREAM); 4033 4034 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4035 4036 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", 4037 stream->sta->addr, stream->tid); 4038 kfree(cmd); 4039 4040 return rc; 4041 } 4042 4043 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 4044 u8 idx) 4045 { 4046 struct mwl8k_cmd_bastream *cmd; 4047 4048 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4049 if (cmd == NULL) 4050 return; 4051 4052 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4053 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4054 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); 4055 4056 cmd->destroy_params.ba_context = cpu_to_le32(idx); 4057 mwl8k_post_cmd(hw, &cmd->header); 4058 4059 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); 4060 4061 kfree(cmd); 4062 } 4063 4064 /* 4065 * CMD_SET_NEW_STN. 4066 */ 4067 struct mwl8k_cmd_set_new_stn { 4068 struct mwl8k_cmd_pkt header; 4069 __le16 aid; 4070 __u8 mac_addr[6]; 4071 __le16 stn_id; 4072 __le16 action; 4073 __le16 rsvd; 4074 __le32 legacy_rates; 4075 __u8 ht_rates[4]; 4076 __le16 cap_info; 4077 __le16 ht_capabilities_info; 4078 __u8 mac_ht_param_info; 4079 __u8 rev; 4080 __u8 control_channel; 4081 __u8 add_channel; 4082 __le16 op_mode; 4083 __le16 stbc; 4084 __u8 add_qos_info; 4085 __u8 is_qos_sta; 4086 __le32 fw_sta_ptr; 4087 } __packed; 4088 4089 #define MWL8K_STA_ACTION_ADD 0 4090 #define MWL8K_STA_ACTION_REMOVE 2 4091 4092 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, 4093 struct ieee80211_vif *vif, 4094 struct ieee80211_sta *sta) 4095 { 4096 struct mwl8k_cmd_set_new_stn *cmd; 4097 u32 rates; 4098 int rc; 4099 4100 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4101 if (cmd == NULL) 4102 return -ENOMEM; 4103 4104 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4105 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4106 cmd->aid = cpu_to_le16(sta->aid); 4107 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); 4108 cmd->stn_id = cpu_to_le16(sta->aid); 4109 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); 4110 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4111 rates = sta->supp_rates[NL80211_BAND_2GHZ]; 4112 else 4113 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; 4114 cmd->legacy_rates = cpu_to_le32(rates); 4115 if (sta->ht_cap.ht_supported) { 4116 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0]; 4117 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1]; 4118 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2]; 4119 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3]; 4120 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap); 4121 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) | 4122 ((sta->ht_cap.ampdu_density & 7) << 2); 4123 cmd->is_qos_sta = 1; 4124 } 4125 4126 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4127 kfree(cmd); 4128 4129 return rc; 4130 } 4131 4132 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, 4133 struct ieee80211_vif *vif) 4134 { 4135 struct mwl8k_cmd_set_new_stn *cmd; 4136 int rc; 4137 4138 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4139 if (cmd == NULL) 4140 return -ENOMEM; 4141 4142 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4143 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4144 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); 4145 4146 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4147 kfree(cmd); 4148 4149 return rc; 4150 } 4151 4152 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, 4153 struct ieee80211_vif *vif, u8 *addr) 4154 { 4155 struct mwl8k_cmd_set_new_stn *cmd; 4156 struct mwl8k_priv *priv = hw->priv; 4157 int rc, i; 4158 u8 idx; 4159 4160 spin_lock(&priv->stream_lock); 4161 /* Destroy any active ampdu streams for this sta */ 4162 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 4163 struct mwl8k_ampdu_stream *s; 4164 s = &priv->ampdu[i]; 4165 if (s->state != AMPDU_NO_STREAM) { 4166 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { 4167 if (s->state == AMPDU_STREAM_ACTIVE) { 4168 idx = s->idx; 4169 spin_unlock(&priv->stream_lock); 4170 mwl8k_destroy_ba(hw, idx); 4171 spin_lock(&priv->stream_lock); 4172 } else if (s->state == AMPDU_STREAM_NEW) { 4173 mwl8k_remove_stream(hw, s); 4174 } 4175 } 4176 } 4177 } 4178 4179 spin_unlock(&priv->stream_lock); 4180 4181 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4182 if (cmd == NULL) 4183 return -ENOMEM; 4184 4185 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4186 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4187 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4188 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); 4189 4190 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4191 kfree(cmd); 4192 4193 return rc; 4194 } 4195 4196 /* 4197 * CMD_UPDATE_ENCRYPTION. 4198 */ 4199 4200 #define MAX_ENCR_KEY_LENGTH 16 4201 #define MIC_KEY_LENGTH 8 4202 4203 struct mwl8k_cmd_update_encryption { 4204 struct mwl8k_cmd_pkt header; 4205 4206 __le32 action; 4207 __le32 reserved; 4208 __u8 mac_addr[6]; 4209 __u8 encr_type; 4210 4211 } __packed; 4212 4213 struct mwl8k_cmd_set_key { 4214 struct mwl8k_cmd_pkt header; 4215 4216 __le32 action; 4217 __le32 reserved; 4218 __le16 length; 4219 __le16 key_type_id; 4220 __le32 key_info; 4221 __le32 key_id; 4222 __le16 key_len; 4223 __u8 key_material[MAX_ENCR_KEY_LENGTH]; 4224 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; 4225 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; 4226 __le16 tkip_rsc_low; 4227 __le32 tkip_rsc_high; 4228 __le16 tkip_tsc_low; 4229 __le32 tkip_tsc_high; 4230 __u8 mac_addr[6]; 4231 } __packed; 4232 4233 enum { 4234 MWL8K_ENCR_ENABLE, 4235 MWL8K_ENCR_SET_KEY, 4236 MWL8K_ENCR_REMOVE_KEY, 4237 MWL8K_ENCR_SET_GROUP_KEY, 4238 }; 4239 4240 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 4241 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 4242 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 4243 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 4244 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 4245 4246 enum { 4247 MWL8K_ALG_WEP, 4248 MWL8K_ALG_TKIP, 4249 MWL8K_ALG_CCMP, 4250 }; 4251 4252 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 4253 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 4254 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 4255 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 4256 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 4257 4258 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, 4259 struct ieee80211_vif *vif, 4260 u8 *addr, 4261 u8 encr_type) 4262 { 4263 struct mwl8k_cmd_update_encryption *cmd; 4264 int rc; 4265 4266 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4267 if (cmd == NULL) 4268 return -ENOMEM; 4269 4270 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4271 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4272 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); 4273 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4274 cmd->encr_type = encr_type; 4275 4276 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4277 kfree(cmd); 4278 4279 return rc; 4280 } 4281 4282 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, 4283 u8 *addr, 4284 struct ieee80211_key_conf *key) 4285 { 4286 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4287 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4288 cmd->length = cpu_to_le16(sizeof(*cmd) - 4289 offsetof(struct mwl8k_cmd_set_key, length)); 4290 cmd->key_id = cpu_to_le32(key->keyidx); 4291 cmd->key_len = cpu_to_le16(key->keylen); 4292 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4293 4294 switch (key->cipher) { 4295 case WLAN_CIPHER_SUITE_WEP40: 4296 case WLAN_CIPHER_SUITE_WEP104: 4297 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); 4298 if (key->keyidx == 0) 4299 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); 4300 4301 break; 4302 case WLAN_CIPHER_SUITE_TKIP: 4303 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); 4304 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4305 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4306 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4307 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID 4308 | MWL8K_KEY_FLAG_TSC_VALID); 4309 break; 4310 case WLAN_CIPHER_SUITE_CCMP: 4311 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); 4312 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4313 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4314 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4315 break; 4316 default: 4317 return -ENOTSUPP; 4318 } 4319 4320 return 0; 4321 } 4322 4323 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, 4324 struct ieee80211_vif *vif, 4325 u8 *addr, 4326 struct ieee80211_key_conf *key) 4327 { 4328 struct mwl8k_cmd_set_key *cmd; 4329 int rc; 4330 int keymlen; 4331 u32 action; 4332 u8 idx; 4333 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4334 4335 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4336 if (cmd == NULL) 4337 return -ENOMEM; 4338 4339 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4340 if (rc < 0) 4341 goto done; 4342 4343 idx = key->keyidx; 4344 4345 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4346 action = MWL8K_ENCR_SET_KEY; 4347 else 4348 action = MWL8K_ENCR_SET_GROUP_KEY; 4349 4350 switch (key->cipher) { 4351 case WLAN_CIPHER_SUITE_WEP40: 4352 case WLAN_CIPHER_SUITE_WEP104: 4353 if (!mwl8k_vif->wep_key_conf[idx].enabled) { 4354 memcpy(mwl8k_vif->wep_key_conf[idx].key, key, 4355 sizeof(*key) + key->keylen); 4356 mwl8k_vif->wep_key_conf[idx].enabled = 1; 4357 } 4358 4359 keymlen = key->keylen; 4360 action = MWL8K_ENCR_SET_KEY; 4361 break; 4362 case WLAN_CIPHER_SUITE_TKIP: 4363 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; 4364 break; 4365 case WLAN_CIPHER_SUITE_CCMP: 4366 keymlen = key->keylen; 4367 break; 4368 default: 4369 rc = -ENOTSUPP; 4370 goto done; 4371 } 4372 4373 memcpy(cmd->key_material, key->key, keymlen); 4374 cmd->action = cpu_to_le32(action); 4375 4376 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4377 done: 4378 kfree(cmd); 4379 4380 return rc; 4381 } 4382 4383 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, 4384 struct ieee80211_vif *vif, 4385 u8 *addr, 4386 struct ieee80211_key_conf *key) 4387 { 4388 struct mwl8k_cmd_set_key *cmd; 4389 int rc; 4390 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4391 4392 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4393 if (cmd == NULL) 4394 return -ENOMEM; 4395 4396 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4397 if (rc < 0) 4398 goto done; 4399 4400 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || 4401 key->cipher == WLAN_CIPHER_SUITE_WEP104) 4402 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; 4403 4404 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); 4405 4406 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4407 done: 4408 kfree(cmd); 4409 4410 return rc; 4411 } 4412 4413 static int mwl8k_set_key(struct ieee80211_hw *hw, 4414 enum set_key_cmd cmd_param, 4415 struct ieee80211_vif *vif, 4416 struct ieee80211_sta *sta, 4417 struct ieee80211_key_conf *key) 4418 { 4419 int rc = 0; 4420 u8 encr_type; 4421 u8 *addr; 4422 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4423 struct mwl8k_priv *priv = hw->priv; 4424 4425 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) 4426 return -EOPNOTSUPP; 4427 4428 if (sta == NULL) 4429 addr = vif->addr; 4430 else 4431 addr = sta->addr; 4432 4433 if (cmd_param == SET_KEY) { 4434 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); 4435 if (rc) 4436 goto out; 4437 4438 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) 4439 || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) 4440 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; 4441 else 4442 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; 4443 4444 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, 4445 encr_type); 4446 if (rc) 4447 goto out; 4448 4449 mwl8k_vif->is_hw_crypto_enabled = true; 4450 4451 } else { 4452 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); 4453 4454 if (rc) 4455 goto out; 4456 } 4457 out: 4458 return rc; 4459 } 4460 4461 /* 4462 * CMD_UPDATE_STADB. 4463 */ 4464 struct ewc_ht_info { 4465 __le16 control1; 4466 __le16 control2; 4467 __le16 control3; 4468 } __packed; 4469 4470 struct peer_capability_info { 4471 /* Peer type - AP vs. STA. */ 4472 __u8 peer_type; 4473 4474 /* Basic 802.11 capabilities from assoc resp. */ 4475 __le16 basic_caps; 4476 4477 /* Set if peer supports 802.11n high throughput (HT). */ 4478 __u8 ht_support; 4479 4480 /* Valid if HT is supported. */ 4481 __le16 ht_caps; 4482 __u8 extended_ht_caps; 4483 struct ewc_ht_info ewc_info; 4484 4485 /* Legacy rate table. Intersection of our rates and peer rates. */ 4486 __u8 legacy_rates[12]; 4487 4488 /* HT rate table. Intersection of our rates and peer rates. */ 4489 __u8 ht_rates[16]; 4490 __u8 pad[16]; 4491 4492 /* If set, interoperability mode, no proprietary extensions. */ 4493 __u8 interop; 4494 __u8 pad2; 4495 __u8 station_id; 4496 __le16 amsdu_enabled; 4497 } __packed; 4498 4499 struct mwl8k_cmd_update_stadb { 4500 struct mwl8k_cmd_pkt header; 4501 4502 /* See STADB_ACTION_TYPE */ 4503 __le32 action; 4504 4505 /* Peer MAC address */ 4506 __u8 peer_addr[ETH_ALEN]; 4507 4508 __le32 reserved; 4509 4510 /* Peer info - valid during add/update. */ 4511 struct peer_capability_info peer_info; 4512 } __packed; 4513 4514 #define MWL8K_STA_DB_MODIFY_ENTRY 1 4515 #define MWL8K_STA_DB_DEL_ENTRY 2 4516 4517 /* Peer Entry flags - used to define the type of the peer node */ 4518 #define MWL8K_PEER_TYPE_ACCESSPOINT 2 4519 4520 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, 4521 struct ieee80211_vif *vif, 4522 struct ieee80211_sta *sta) 4523 { 4524 struct mwl8k_cmd_update_stadb *cmd; 4525 struct peer_capability_info *p; 4526 u32 rates; 4527 int rc; 4528 4529 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4530 if (cmd == NULL) 4531 return -ENOMEM; 4532 4533 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4534 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4535 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); 4536 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); 4537 4538 p = &cmd->peer_info; 4539 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; 4540 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); 4541 p->ht_support = sta->ht_cap.ht_supported; 4542 p->ht_caps = cpu_to_le16(sta->ht_cap.cap); 4543 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) | 4544 ((sta->ht_cap.ampdu_density & 7) << 2); 4545 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4546 rates = sta->supp_rates[NL80211_BAND_2GHZ]; 4547 else 4548 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; 4549 legacy_rate_mask_to_array(p->legacy_rates, rates); 4550 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16); 4551 p->interop = 1; 4552 p->amsdu_enabled = 0; 4553 4554 rc = mwl8k_post_cmd(hw, &cmd->header); 4555 if (!rc) 4556 rc = p->station_id; 4557 kfree(cmd); 4558 4559 return rc; 4560 } 4561 4562 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, 4563 struct ieee80211_vif *vif, u8 *addr) 4564 { 4565 struct mwl8k_cmd_update_stadb *cmd; 4566 int rc; 4567 4568 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4569 if (cmd == NULL) 4570 return -ENOMEM; 4571 4572 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4573 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4574 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); 4575 memcpy(cmd->peer_addr, addr, ETH_ALEN); 4576 4577 rc = mwl8k_post_cmd(hw, &cmd->header); 4578 kfree(cmd); 4579 4580 return rc; 4581 } 4582 4583 4584 /* 4585 * Interrupt handling. 4586 */ 4587 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) 4588 { 4589 struct ieee80211_hw *hw = dev_id; 4590 struct mwl8k_priv *priv = hw->priv; 4591 u32 status; 4592 4593 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4594 if (!status) 4595 return IRQ_NONE; 4596 4597 if (status & MWL8K_A2H_INT_TX_DONE) { 4598 status &= ~MWL8K_A2H_INT_TX_DONE; 4599 tasklet_schedule(&priv->poll_tx_task); 4600 } 4601 4602 if (status & MWL8K_A2H_INT_RX_READY) { 4603 status &= ~MWL8K_A2H_INT_RX_READY; 4604 tasklet_schedule(&priv->poll_rx_task); 4605 } 4606 4607 if (status & MWL8K_A2H_INT_BA_WATCHDOG) { 4608 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, 4609 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4610 4611 atomic_inc(&priv->watchdog_event_pending); 4612 status &= ~MWL8K_A2H_INT_BA_WATCHDOG; 4613 ieee80211_queue_work(hw, &priv->watchdog_ba_handle); 4614 } 4615 4616 if (status) 4617 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4618 4619 if (status & MWL8K_A2H_INT_OPC_DONE) { 4620 if (priv->hostcmd_wait != NULL) 4621 complete(priv->hostcmd_wait); 4622 } 4623 4624 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { 4625 if (!mutex_is_locked(&priv->fw_mutex) && 4626 priv->radio_on && priv->pending_tx_pkts) 4627 mwl8k_tx_start(priv); 4628 } 4629 4630 return IRQ_HANDLED; 4631 } 4632 4633 static void mwl8k_tx_poll(unsigned long data) 4634 { 4635 struct ieee80211_hw *hw = (struct ieee80211_hw *)data; 4636 struct mwl8k_priv *priv = hw->priv; 4637 int limit; 4638 int i; 4639 4640 limit = 32; 4641 4642 spin_lock(&priv->tx_lock); 4643 4644 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4645 limit -= mwl8k_txq_reclaim(hw, i, limit, 0); 4646 4647 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { 4648 complete(priv->tx_wait); 4649 priv->tx_wait = NULL; 4650 } 4651 4652 spin_unlock(&priv->tx_lock); 4653 4654 if (limit) { 4655 writel(~MWL8K_A2H_INT_TX_DONE, 4656 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4657 } else { 4658 tasklet_schedule(&priv->poll_tx_task); 4659 } 4660 } 4661 4662 static void mwl8k_rx_poll(unsigned long data) 4663 { 4664 struct ieee80211_hw *hw = (struct ieee80211_hw *)data; 4665 struct mwl8k_priv *priv = hw->priv; 4666 int limit; 4667 4668 limit = 32; 4669 limit -= rxq_process(hw, 0, limit); 4670 limit -= rxq_refill(hw, 0, limit); 4671 4672 if (limit) { 4673 writel(~MWL8K_A2H_INT_RX_READY, 4674 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4675 } else { 4676 tasklet_schedule(&priv->poll_rx_task); 4677 } 4678 } 4679 4680 4681 /* 4682 * Core driver operations. 4683 */ 4684 static void mwl8k_tx(struct ieee80211_hw *hw, 4685 struct ieee80211_tx_control *control, 4686 struct sk_buff *skb) 4687 { 4688 struct mwl8k_priv *priv = hw->priv; 4689 int index = skb_get_queue_mapping(skb); 4690 4691 if (!priv->radio_on) { 4692 wiphy_debug(hw->wiphy, 4693 "dropped TX frame since radio disabled\n"); 4694 dev_kfree_skb(skb); 4695 return; 4696 } 4697 4698 mwl8k_txq_xmit(hw, index, control->sta, skb); 4699 } 4700 4701 static int mwl8k_start(struct ieee80211_hw *hw) 4702 { 4703 struct mwl8k_priv *priv = hw->priv; 4704 int rc; 4705 4706 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 4707 IRQF_SHARED, MWL8K_NAME, hw); 4708 if (rc) { 4709 priv->irq = -1; 4710 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 4711 return -EIO; 4712 } 4713 priv->irq = priv->pdev->irq; 4714 4715 /* Enable TX reclaim and RX tasklets. */ 4716 tasklet_enable(&priv->poll_tx_task); 4717 tasklet_enable(&priv->poll_rx_task); 4718 4719 /* Enable interrupts */ 4720 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4721 iowrite32(MWL8K_A2H_EVENTS, 4722 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4723 4724 rc = mwl8k_fw_lock(hw); 4725 if (!rc) { 4726 rc = mwl8k_cmd_radio_enable(hw); 4727 4728 if (!priv->ap_fw) { 4729 if (!rc) 4730 rc = mwl8k_cmd_enable_sniffer(hw, 0); 4731 4732 if (!rc) 4733 rc = mwl8k_cmd_set_pre_scan(hw); 4734 4735 if (!rc) 4736 rc = mwl8k_cmd_set_post_scan(hw, 4737 "\x00\x00\x00\x00\x00\x00"); 4738 } 4739 4740 if (!rc) 4741 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); 4742 4743 if (!rc) 4744 rc = mwl8k_cmd_set_wmm_mode(hw, 0); 4745 4746 mwl8k_fw_unlock(hw); 4747 } 4748 4749 if (rc) { 4750 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4751 free_irq(priv->pdev->irq, hw); 4752 priv->irq = -1; 4753 tasklet_disable(&priv->poll_tx_task); 4754 tasklet_disable(&priv->poll_rx_task); 4755 } else { 4756 ieee80211_wake_queues(hw); 4757 } 4758 4759 return rc; 4760 } 4761 4762 static void mwl8k_stop(struct ieee80211_hw *hw) 4763 { 4764 struct mwl8k_priv *priv = hw->priv; 4765 int i; 4766 4767 if (!priv->hw_restart_in_progress) 4768 mwl8k_cmd_radio_disable(hw); 4769 4770 ieee80211_stop_queues(hw); 4771 4772 /* Disable interrupts */ 4773 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4774 if (priv->irq != -1) { 4775 free_irq(priv->pdev->irq, hw); 4776 priv->irq = -1; 4777 } 4778 4779 /* Stop finalize join worker */ 4780 cancel_work_sync(&priv->finalize_join_worker); 4781 cancel_work_sync(&priv->watchdog_ba_handle); 4782 if (priv->beacon_skb != NULL) 4783 dev_kfree_skb(priv->beacon_skb); 4784 4785 /* Stop TX reclaim and RX tasklets. */ 4786 tasklet_disable(&priv->poll_tx_task); 4787 tasklet_disable(&priv->poll_rx_task); 4788 4789 /* Return all skbs to mac80211 */ 4790 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4791 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 4792 } 4793 4794 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); 4795 4796 static int mwl8k_add_interface(struct ieee80211_hw *hw, 4797 struct ieee80211_vif *vif) 4798 { 4799 struct mwl8k_priv *priv = hw->priv; 4800 struct mwl8k_vif *mwl8k_vif; 4801 u32 macids_supported; 4802 int macid, rc; 4803 struct mwl8k_device_info *di; 4804 4805 /* 4806 * Reject interface creation if sniffer mode is active, as 4807 * STA operation is mutually exclusive with hardware sniffer 4808 * mode. (Sniffer mode is only used on STA firmware.) 4809 */ 4810 if (priv->sniffer_enabled) { 4811 wiphy_info(hw->wiphy, 4812 "unable to create STA interface because sniffer mode is enabled\n"); 4813 return -EINVAL; 4814 } 4815 4816 di = priv->device_info; 4817 switch (vif->type) { 4818 case NL80211_IFTYPE_AP: 4819 if (!priv->ap_fw && di->fw_image_ap) { 4820 /* we must load the ap fw to meet this request */ 4821 if (!list_empty(&priv->vif_list)) 4822 return -EBUSY; 4823 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4824 if (rc) 4825 return rc; 4826 } 4827 macids_supported = priv->ap_macids_supported; 4828 break; 4829 case NL80211_IFTYPE_STATION: 4830 if (priv->ap_fw && di->fw_image_sta) { 4831 if (!list_empty(&priv->vif_list)) { 4832 wiphy_warn(hw->wiphy, "AP interface is running.\n" 4833 "Adding STA interface for WDS"); 4834 } else { 4835 /* we must load the sta fw to 4836 * meet this request. 4837 */ 4838 rc = mwl8k_reload_firmware(hw, 4839 di->fw_image_sta); 4840 if (rc) 4841 return rc; 4842 } 4843 } 4844 macids_supported = priv->sta_macids_supported; 4845 break; 4846 default: 4847 return -EINVAL; 4848 } 4849 4850 macid = ffs(macids_supported & ~priv->macids_used); 4851 if (!macid--) 4852 return -EBUSY; 4853 4854 /* Setup driver private area. */ 4855 mwl8k_vif = MWL8K_VIF(vif); 4856 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); 4857 mwl8k_vif->vif = vif; 4858 mwl8k_vif->macid = macid; 4859 mwl8k_vif->seqno = 0; 4860 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); 4861 mwl8k_vif->is_hw_crypto_enabled = false; 4862 4863 /* Set the mac address. */ 4864 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); 4865 4866 if (vif->type == NL80211_IFTYPE_AP) 4867 mwl8k_cmd_set_new_stn_add_self(hw, vif); 4868 4869 priv->macids_used |= 1 << mwl8k_vif->macid; 4870 list_add_tail(&mwl8k_vif->list, &priv->vif_list); 4871 4872 return 0; 4873 } 4874 4875 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) 4876 { 4877 /* Has ieee80211_restart_hw re-added the removed interfaces? */ 4878 if (!priv->macids_used) 4879 return; 4880 4881 priv->macids_used &= ~(1 << vif->macid); 4882 list_del(&vif->list); 4883 } 4884 4885 static void mwl8k_remove_interface(struct ieee80211_hw *hw, 4886 struct ieee80211_vif *vif) 4887 { 4888 struct mwl8k_priv *priv = hw->priv; 4889 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4890 4891 if (vif->type == NL80211_IFTYPE_AP) 4892 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); 4893 4894 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); 4895 4896 mwl8k_remove_vif(priv, mwl8k_vif); 4897 } 4898 4899 static void mwl8k_hw_restart_work(struct work_struct *work) 4900 { 4901 struct mwl8k_priv *priv = 4902 container_of(work, struct mwl8k_priv, fw_reload); 4903 struct ieee80211_hw *hw = priv->hw; 4904 struct mwl8k_device_info *di; 4905 int rc; 4906 4907 /* If some command is waiting for a response, clear it */ 4908 if (priv->hostcmd_wait != NULL) { 4909 complete(priv->hostcmd_wait); 4910 priv->hostcmd_wait = NULL; 4911 } 4912 4913 priv->hw_restart_owner = current; 4914 di = priv->device_info; 4915 mwl8k_fw_lock(hw); 4916 4917 if (priv->ap_fw) 4918 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4919 else 4920 rc = mwl8k_reload_firmware(hw, di->fw_image_sta); 4921 4922 if (rc) 4923 goto fail; 4924 4925 priv->hw_restart_owner = NULL; 4926 priv->hw_restart_in_progress = false; 4927 4928 /* 4929 * This unlock will wake up the queues and 4930 * also opens the command path for other 4931 * commands 4932 */ 4933 mwl8k_fw_unlock(hw); 4934 4935 ieee80211_restart_hw(hw); 4936 4937 wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); 4938 4939 return; 4940 fail: 4941 mwl8k_fw_unlock(hw); 4942 4943 wiphy_err(hw->wiphy, "Firmware restart failed\n"); 4944 } 4945 4946 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) 4947 { 4948 struct ieee80211_conf *conf = &hw->conf; 4949 struct mwl8k_priv *priv = hw->priv; 4950 int rc; 4951 4952 rc = mwl8k_fw_lock(hw); 4953 if (rc) 4954 return rc; 4955 4956 if (conf->flags & IEEE80211_CONF_IDLE) 4957 rc = mwl8k_cmd_radio_disable(hw); 4958 else 4959 rc = mwl8k_cmd_radio_enable(hw); 4960 if (rc) 4961 goto out; 4962 4963 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 4964 rc = mwl8k_cmd_set_rf_channel(hw, conf); 4965 if (rc) 4966 goto out; 4967 } 4968 4969 if (conf->power_level > 18) 4970 conf->power_level = 18; 4971 4972 if (priv->ap_fw) { 4973 4974 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { 4975 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); 4976 if (rc) 4977 goto out; 4978 } 4979 4980 4981 } else { 4982 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); 4983 if (rc) 4984 goto out; 4985 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); 4986 } 4987 4988 out: 4989 mwl8k_fw_unlock(hw); 4990 4991 return rc; 4992 } 4993 4994 static void 4995 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 4996 struct ieee80211_bss_conf *info, u32 changed) 4997 { 4998 struct mwl8k_priv *priv = hw->priv; 4999 u32 ap_legacy_rates = 0; 5000 u8 ap_mcs_rates[16]; 5001 int rc; 5002 5003 if (mwl8k_fw_lock(hw)) 5004 return; 5005 5006 /* 5007 * No need to capture a beacon if we're no longer associated. 5008 */ 5009 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc) 5010 priv->capture_beacon = false; 5011 5012 /* 5013 * Get the AP's legacy and MCS rates. 5014 */ 5015 if (vif->bss_conf.assoc) { 5016 struct ieee80211_sta *ap; 5017 5018 rcu_read_lock(); 5019 5020 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); 5021 if (ap == NULL) { 5022 rcu_read_unlock(); 5023 goto out; 5024 } 5025 5026 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { 5027 ap_legacy_rates = ap->supp_rates[NL80211_BAND_2GHZ]; 5028 } else { 5029 ap_legacy_rates = 5030 ap->supp_rates[NL80211_BAND_5GHZ] << 5; 5031 } 5032 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16); 5033 5034 rcu_read_unlock(); 5035 5036 if (changed & BSS_CHANGED_ASSOC) { 5037 if (!priv->ap_fw) { 5038 rc = mwl8k_cmd_set_rate(hw, vif, 5039 ap_legacy_rates, 5040 ap_mcs_rates); 5041 if (rc) 5042 goto out; 5043 5044 rc = mwl8k_cmd_use_fixed_rate_sta(hw); 5045 if (rc) 5046 goto out; 5047 } else { 5048 int idx; 5049 int rate; 5050 5051 /* Use AP firmware specific rate command. 5052 */ 5053 idx = ffs(vif->bss_conf.basic_rates); 5054 if (idx) 5055 idx--; 5056 5057 if (hw->conf.chandef.chan->band == 5058 NL80211_BAND_2GHZ) 5059 rate = mwl8k_rates_24[idx].hw_value; 5060 else 5061 rate = mwl8k_rates_50[idx].hw_value; 5062 5063 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5064 } 5065 } 5066 } 5067 5068 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5069 rc = mwl8k_set_radio_preamble(hw, 5070 vif->bss_conf.use_short_preamble); 5071 if (rc) 5072 goto out; 5073 } 5074 5075 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { 5076 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); 5077 if (rc) 5078 goto out; 5079 } 5080 5081 if (vif->bss_conf.assoc && !priv->ap_fw && 5082 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | 5083 BSS_CHANGED_HT))) { 5084 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); 5085 if (rc) 5086 goto out; 5087 } 5088 5089 if (vif->bss_conf.assoc && 5090 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { 5091 /* 5092 * Finalize the join. Tell rx handler to process 5093 * next beacon from our BSSID. 5094 */ 5095 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); 5096 priv->capture_beacon = true; 5097 } 5098 5099 out: 5100 mwl8k_fw_unlock(hw); 5101 } 5102 5103 static void 5104 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5105 struct ieee80211_bss_conf *info, u32 changed) 5106 { 5107 int rc; 5108 5109 if (mwl8k_fw_lock(hw)) 5110 return; 5111 5112 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5113 rc = mwl8k_set_radio_preamble(hw, 5114 vif->bss_conf.use_short_preamble); 5115 if (rc) 5116 goto out; 5117 } 5118 5119 if (changed & BSS_CHANGED_BASIC_RATES) { 5120 int idx; 5121 int rate; 5122 5123 /* 5124 * Use lowest supported basic rate for multicasts 5125 * and management frames (such as probe responses -- 5126 * beacons will always go out at 1 Mb/s). 5127 */ 5128 idx = ffs(vif->bss_conf.basic_rates); 5129 if (idx) 5130 idx--; 5131 5132 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 5133 rate = mwl8k_rates_24[idx].hw_value; 5134 else 5135 rate = mwl8k_rates_50[idx].hw_value; 5136 5137 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5138 } 5139 5140 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { 5141 struct sk_buff *skb; 5142 5143 skb = ieee80211_beacon_get(hw, vif); 5144 if (skb != NULL) { 5145 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); 5146 kfree_skb(skb); 5147 } 5148 } 5149 5150 if (changed & BSS_CHANGED_BEACON_ENABLED) 5151 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); 5152 5153 out: 5154 mwl8k_fw_unlock(hw); 5155 } 5156 5157 static void 5158 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5159 struct ieee80211_bss_conf *info, u32 changed) 5160 { 5161 if (vif->type == NL80211_IFTYPE_STATION) 5162 mwl8k_bss_info_changed_sta(hw, vif, info, changed); 5163 if (vif->type == NL80211_IFTYPE_AP) 5164 mwl8k_bss_info_changed_ap(hw, vif, info, changed); 5165 } 5166 5167 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, 5168 struct netdev_hw_addr_list *mc_list) 5169 { 5170 struct mwl8k_cmd_pkt *cmd; 5171 5172 /* 5173 * Synthesize and return a command packet that programs the 5174 * hardware multicast address filter. At this point we don't 5175 * know whether FIF_ALLMULTI is being requested, but if it is, 5176 * we'll end up throwing this packet away and creating a new 5177 * one in mwl8k_configure_filter(). 5178 */ 5179 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); 5180 5181 return (unsigned long)cmd; 5182 } 5183 5184 static int 5185 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, 5186 unsigned int changed_flags, 5187 unsigned int *total_flags) 5188 { 5189 struct mwl8k_priv *priv = hw->priv; 5190 5191 /* 5192 * Hardware sniffer mode is mutually exclusive with STA 5193 * operation, so refuse to enable sniffer mode if a STA 5194 * interface is active. 5195 */ 5196 if (!list_empty(&priv->vif_list)) { 5197 if (net_ratelimit()) 5198 wiphy_info(hw->wiphy, 5199 "not enabling sniffer mode because STA interface is active\n"); 5200 return 0; 5201 } 5202 5203 if (!priv->sniffer_enabled) { 5204 if (mwl8k_cmd_enable_sniffer(hw, 1)) 5205 return 0; 5206 priv->sniffer_enabled = true; 5207 } 5208 5209 *total_flags &= FIF_ALLMULTI | 5210 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | 5211 FIF_OTHER_BSS; 5212 5213 return 1; 5214 } 5215 5216 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) 5217 { 5218 if (!list_empty(&priv->vif_list)) 5219 return list_entry(priv->vif_list.next, struct mwl8k_vif, list); 5220 5221 return NULL; 5222 } 5223 5224 static void mwl8k_configure_filter(struct ieee80211_hw *hw, 5225 unsigned int changed_flags, 5226 unsigned int *total_flags, 5227 u64 multicast) 5228 { 5229 struct mwl8k_priv *priv = hw->priv; 5230 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; 5231 5232 /* 5233 * AP firmware doesn't allow fine-grained control over 5234 * the receive filter. 5235 */ 5236 if (priv->ap_fw) { 5237 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5238 kfree(cmd); 5239 return; 5240 } 5241 5242 /* 5243 * Enable hardware sniffer mode if FIF_CONTROL or 5244 * FIF_OTHER_BSS is requested. 5245 */ 5246 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && 5247 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { 5248 kfree(cmd); 5249 return; 5250 } 5251 5252 /* Clear unsupported feature flags */ 5253 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5254 5255 if (mwl8k_fw_lock(hw)) { 5256 kfree(cmd); 5257 return; 5258 } 5259 5260 if (priv->sniffer_enabled) { 5261 mwl8k_cmd_enable_sniffer(hw, 0); 5262 priv->sniffer_enabled = false; 5263 } 5264 5265 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 5266 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { 5267 /* 5268 * Disable the BSS filter. 5269 */ 5270 mwl8k_cmd_set_pre_scan(hw); 5271 } else { 5272 struct mwl8k_vif *mwl8k_vif; 5273 const u8 *bssid; 5274 5275 /* 5276 * Enable the BSS filter. 5277 * 5278 * If there is an active STA interface, use that 5279 * interface's BSSID, otherwise use a dummy one 5280 * (where the OUI part needs to be nonzero for 5281 * the BSSID to be accepted by POST_SCAN). 5282 */ 5283 mwl8k_vif = mwl8k_first_vif(priv); 5284 if (mwl8k_vif != NULL) 5285 bssid = mwl8k_vif->vif->bss_conf.bssid; 5286 else 5287 bssid = "\x01\x00\x00\x00\x00\x00"; 5288 5289 mwl8k_cmd_set_post_scan(hw, bssid); 5290 } 5291 } 5292 5293 /* 5294 * If FIF_ALLMULTI is being requested, throw away the command 5295 * packet that ->prepare_multicast() built and replace it with 5296 * a command packet that enables reception of all multicast 5297 * packets. 5298 */ 5299 if (*total_flags & FIF_ALLMULTI) { 5300 kfree(cmd); 5301 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); 5302 } 5303 5304 if (cmd != NULL) { 5305 mwl8k_post_cmd(hw, cmd); 5306 kfree(cmd); 5307 } 5308 5309 mwl8k_fw_unlock(hw); 5310 } 5311 5312 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 5313 { 5314 return mwl8k_cmd_set_rts_threshold(hw, value); 5315 } 5316 5317 static int mwl8k_sta_remove(struct ieee80211_hw *hw, 5318 struct ieee80211_vif *vif, 5319 struct ieee80211_sta *sta) 5320 { 5321 struct mwl8k_priv *priv = hw->priv; 5322 5323 if (priv->ap_fw) 5324 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); 5325 else 5326 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); 5327 } 5328 5329 static int mwl8k_sta_add(struct ieee80211_hw *hw, 5330 struct ieee80211_vif *vif, 5331 struct ieee80211_sta *sta) 5332 { 5333 struct mwl8k_priv *priv = hw->priv; 5334 int ret; 5335 int i; 5336 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 5337 struct ieee80211_key_conf *key; 5338 5339 if (!priv->ap_fw) { 5340 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); 5341 if (ret >= 0) { 5342 MWL8K_STA(sta)->peer_id = ret; 5343 if (sta->ht_cap.ht_supported) 5344 MWL8K_STA(sta)->is_ampdu_allowed = true; 5345 ret = 0; 5346 } 5347 5348 } else { 5349 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); 5350 } 5351 5352 for (i = 0; i < NUM_WEP_KEYS; i++) { 5353 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); 5354 if (mwl8k_vif->wep_key_conf[i].enabled) 5355 mwl8k_set_key(hw, SET_KEY, vif, sta, key); 5356 } 5357 return ret; 5358 } 5359 5360 static int mwl8k_conf_tx(struct ieee80211_hw *hw, 5361 struct ieee80211_vif *vif, u16 queue, 5362 const struct ieee80211_tx_queue_params *params) 5363 { 5364 struct mwl8k_priv *priv = hw->priv; 5365 int rc; 5366 5367 rc = mwl8k_fw_lock(hw); 5368 if (!rc) { 5369 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); 5370 memcpy(&priv->wmm_params[queue], params, sizeof(*params)); 5371 5372 if (!priv->wmm_enabled) 5373 rc = mwl8k_cmd_set_wmm_mode(hw, 1); 5374 5375 if (!rc) { 5376 int q = MWL8K_TX_WMM_QUEUES - 1 - queue; 5377 rc = mwl8k_cmd_set_edca_params(hw, q, 5378 params->cw_min, 5379 params->cw_max, 5380 params->aifs, 5381 params->txop); 5382 } 5383 5384 mwl8k_fw_unlock(hw); 5385 } 5386 5387 return rc; 5388 } 5389 5390 static int mwl8k_get_stats(struct ieee80211_hw *hw, 5391 struct ieee80211_low_level_stats *stats) 5392 { 5393 return mwl8k_cmd_get_stat(hw, stats); 5394 } 5395 5396 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, 5397 struct survey_info *survey) 5398 { 5399 struct mwl8k_priv *priv = hw->priv; 5400 struct ieee80211_conf *conf = &hw->conf; 5401 struct ieee80211_supported_band *sband; 5402 5403 if (priv->ap_fw) { 5404 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 5405 5406 if (sband && idx >= sband->n_channels) { 5407 idx -= sband->n_channels; 5408 sband = NULL; 5409 } 5410 5411 if (!sband) 5412 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 5413 5414 if (!sband || idx >= sband->n_channels) 5415 return -ENOENT; 5416 5417 memcpy(survey, &priv->survey[idx], sizeof(*survey)); 5418 survey->channel = &sband->channels[idx]; 5419 5420 return 0; 5421 } 5422 5423 if (idx != 0) 5424 return -ENOENT; 5425 5426 survey->channel = conf->chandef.chan; 5427 survey->filled = SURVEY_INFO_NOISE_DBM; 5428 survey->noise = priv->noise; 5429 5430 return 0; 5431 } 5432 5433 #define MAX_AMPDU_ATTEMPTS 5 5434 5435 static int 5436 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5437 struct ieee80211_ampdu_params *params) 5438 { 5439 struct ieee80211_sta *sta = params->sta; 5440 enum ieee80211_ampdu_mlme_action action = params->action; 5441 u16 tid = params->tid; 5442 u16 *ssn = ¶ms->ssn; 5443 u8 buf_size = params->buf_size; 5444 int i, rc = 0; 5445 struct mwl8k_priv *priv = hw->priv; 5446 struct mwl8k_ampdu_stream *stream; 5447 u8 *addr = sta->addr, idx; 5448 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 5449 5450 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) 5451 return -ENOTSUPP; 5452 5453 spin_lock(&priv->stream_lock); 5454 stream = mwl8k_lookup_stream(hw, addr, tid); 5455 5456 switch (action) { 5457 case IEEE80211_AMPDU_RX_START: 5458 case IEEE80211_AMPDU_RX_STOP: 5459 break; 5460 case IEEE80211_AMPDU_TX_START: 5461 /* By the time we get here the hw queues may contain outgoing 5462 * packets for this RA/TID that are not part of this BA 5463 * session. The hw will assign sequence numbers to these 5464 * packets as they go out. So if we query the hw for its next 5465 * sequence number and use that for the SSN here, it may end up 5466 * being wrong, which will lead to sequence number mismatch at 5467 * the recipient. To avoid this, we reset the sequence number 5468 * to O for the first MPDU in this BA stream. 5469 */ 5470 *ssn = 0; 5471 if (stream == NULL) { 5472 /* This means that somebody outside this driver called 5473 * ieee80211_start_tx_ba_session. This is unexpected 5474 * because we do our own rate control. Just warn and 5475 * move on. 5476 */ 5477 wiphy_warn(hw->wiphy, "Unexpected call to %s. " 5478 "Proceeding anyway.\n", __func__); 5479 stream = mwl8k_add_stream(hw, sta, tid); 5480 } 5481 if (stream == NULL) { 5482 wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); 5483 rc = -EBUSY; 5484 break; 5485 } 5486 stream->state = AMPDU_STREAM_IN_PROGRESS; 5487 5488 /* Release the lock before we do the time consuming stuff */ 5489 spin_unlock(&priv->stream_lock); 5490 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { 5491 5492 /* Check if link is still valid */ 5493 if (!sta_info->is_ampdu_allowed) { 5494 spin_lock(&priv->stream_lock); 5495 mwl8k_remove_stream(hw, stream); 5496 spin_unlock(&priv->stream_lock); 5497 return -EBUSY; 5498 } 5499 5500 rc = mwl8k_check_ba(hw, stream, vif); 5501 5502 /* If HW restart is in progress mwl8k_post_cmd will 5503 * return -EBUSY. Avoid retrying mwl8k_check_ba in 5504 * such cases 5505 */ 5506 if (!rc || rc == -EBUSY) 5507 break; 5508 /* 5509 * HW queues take time to be flushed, give them 5510 * sufficient time 5511 */ 5512 5513 msleep(1000); 5514 } 5515 spin_lock(&priv->stream_lock); 5516 if (rc) { 5517 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" 5518 " attempts\n", tid, MAX_AMPDU_ATTEMPTS); 5519 mwl8k_remove_stream(hw, stream); 5520 rc = -EBUSY; 5521 break; 5522 } 5523 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE; 5524 break; 5525 case IEEE80211_AMPDU_TX_STOP_CONT: 5526 case IEEE80211_AMPDU_TX_STOP_FLUSH: 5527 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 5528 if (stream) { 5529 if (stream->state == AMPDU_STREAM_ACTIVE) { 5530 idx = stream->idx; 5531 spin_unlock(&priv->stream_lock); 5532 mwl8k_destroy_ba(hw, idx); 5533 spin_lock(&priv->stream_lock); 5534 } 5535 mwl8k_remove_stream(hw, stream); 5536 } 5537 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); 5538 break; 5539 case IEEE80211_AMPDU_TX_OPERATIONAL: 5540 BUG_ON(stream == NULL); 5541 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); 5542 spin_unlock(&priv->stream_lock); 5543 rc = mwl8k_create_ba(hw, stream, buf_size, vif); 5544 spin_lock(&priv->stream_lock); 5545 if (!rc) 5546 stream->state = AMPDU_STREAM_ACTIVE; 5547 else { 5548 idx = stream->idx; 5549 spin_unlock(&priv->stream_lock); 5550 mwl8k_destroy_ba(hw, idx); 5551 spin_lock(&priv->stream_lock); 5552 wiphy_debug(hw->wiphy, 5553 "Failed adding stream for sta %pM tid %d\n", 5554 addr, tid); 5555 mwl8k_remove_stream(hw, stream); 5556 } 5557 break; 5558 5559 default: 5560 rc = -ENOTSUPP; 5561 } 5562 5563 spin_unlock(&priv->stream_lock); 5564 return rc; 5565 } 5566 5567 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, 5568 struct ieee80211_vif *vif, 5569 const u8 *mac_addr) 5570 { 5571 struct mwl8k_priv *priv = hw->priv; 5572 u8 tmp; 5573 5574 if (!priv->ap_fw) 5575 return; 5576 5577 /* clear all stats */ 5578 priv->channel_time = 0; 5579 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5580 ioread32(priv->regs + NOK_CCA_CNT_REG); 5581 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5582 5583 priv->sw_scan_start = true; 5584 } 5585 5586 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, 5587 struct ieee80211_vif *vif) 5588 { 5589 struct mwl8k_priv *priv = hw->priv; 5590 u8 tmp; 5591 5592 if (!priv->ap_fw) 5593 return; 5594 5595 priv->sw_scan_start = false; 5596 5597 /* clear all stats */ 5598 priv->channel_time = 0; 5599 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5600 ioread32(priv->regs + NOK_CCA_CNT_REG); 5601 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5602 } 5603 5604 static const struct ieee80211_ops mwl8k_ops = { 5605 .tx = mwl8k_tx, 5606 .start = mwl8k_start, 5607 .stop = mwl8k_stop, 5608 .add_interface = mwl8k_add_interface, 5609 .remove_interface = mwl8k_remove_interface, 5610 .config = mwl8k_config, 5611 .bss_info_changed = mwl8k_bss_info_changed, 5612 .prepare_multicast = mwl8k_prepare_multicast, 5613 .configure_filter = mwl8k_configure_filter, 5614 .set_key = mwl8k_set_key, 5615 .set_rts_threshold = mwl8k_set_rts_threshold, 5616 .sta_add = mwl8k_sta_add, 5617 .sta_remove = mwl8k_sta_remove, 5618 .conf_tx = mwl8k_conf_tx, 5619 .get_stats = mwl8k_get_stats, 5620 .get_survey = mwl8k_get_survey, 5621 .ampdu_action = mwl8k_ampdu_action, 5622 .sw_scan_start = mwl8k_sw_scan_start, 5623 .sw_scan_complete = mwl8k_sw_scan_complete, 5624 }; 5625 5626 static void mwl8k_finalize_join_worker(struct work_struct *work) 5627 { 5628 struct mwl8k_priv *priv = 5629 container_of(work, struct mwl8k_priv, finalize_join_worker); 5630 struct sk_buff *skb = priv->beacon_skb; 5631 struct ieee80211_mgmt *mgmt = (void *)skb->data; 5632 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 5633 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, 5634 mgmt->u.beacon.variable, len); 5635 int dtim_period = 1; 5636 5637 if (tim && tim[1] >= 2) 5638 dtim_period = tim[3]; 5639 5640 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); 5641 5642 dev_kfree_skb(skb); 5643 priv->beacon_skb = NULL; 5644 } 5645 5646 enum { 5647 MWL8363 = 0, 5648 MWL8687, 5649 MWL8366, 5650 MWL8764, 5651 }; 5652 5653 #define MWL8K_8366_AP_FW_API 3 5654 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" 5655 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) 5656 5657 #define MWL8K_8764_AP_FW_API 1 5658 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" 5659 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) 5660 5661 static struct mwl8k_device_info mwl8k_info_tbl[] = { 5662 [MWL8363] = { 5663 .part_name = "88w8363", 5664 .helper_image = "mwl8k/helper_8363.fw", 5665 .fw_image_sta = "mwl8k/fmimage_8363.fw", 5666 }, 5667 [MWL8687] = { 5668 .part_name = "88w8687", 5669 .helper_image = "mwl8k/helper_8687.fw", 5670 .fw_image_sta = "mwl8k/fmimage_8687.fw", 5671 }, 5672 [MWL8366] = { 5673 .part_name = "88w8366", 5674 .helper_image = "mwl8k/helper_8366.fw", 5675 .fw_image_sta = "mwl8k/fmimage_8366.fw", 5676 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), 5677 .fw_api_ap = MWL8K_8366_AP_FW_API, 5678 .ap_rxd_ops = &rxd_ap_ops, 5679 }, 5680 [MWL8764] = { 5681 .part_name = "88w8764", 5682 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), 5683 .fw_api_ap = MWL8K_8764_AP_FW_API, 5684 .ap_rxd_ops = &rxd_ap_ops, 5685 }, 5686 }; 5687 5688 MODULE_FIRMWARE("mwl8k/helper_8363.fw"); 5689 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); 5690 MODULE_FIRMWARE("mwl8k/helper_8687.fw"); 5691 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); 5692 MODULE_FIRMWARE("mwl8k/helper_8366.fw"); 5693 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); 5694 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); 5695 5696 static const struct pci_device_id mwl8k_pci_id_table[] = { 5697 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, 5698 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, 5699 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, 5700 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, 5701 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, 5702 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, 5703 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, 5704 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, 5705 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, 5706 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, 5707 { }, 5708 }; 5709 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); 5710 5711 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) 5712 { 5713 int rc; 5714 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" 5715 "Trying alternative firmware %s\n", pci_name(priv->pdev), 5716 priv->fw_pref, priv->fw_alt); 5717 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); 5718 if (rc) { 5719 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5720 pci_name(priv->pdev), priv->fw_alt); 5721 return rc; 5722 } 5723 return 0; 5724 } 5725 5726 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); 5727 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) 5728 { 5729 struct mwl8k_priv *priv = context; 5730 struct mwl8k_device_info *di = priv->device_info; 5731 int rc; 5732 5733 switch (priv->fw_state) { 5734 case FW_STATE_INIT: 5735 if (!fw) { 5736 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 5737 pci_name(priv->pdev), di->helper_image); 5738 goto fail; 5739 } 5740 priv->fw_helper = fw; 5741 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, 5742 true); 5743 if (rc && 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 if (rc) 5749 goto fail; 5750 else 5751 priv->fw_state = FW_STATE_LOADING_PREF; 5752 break; 5753 5754 case FW_STATE_LOADING_PREF: 5755 if (!fw) { 5756 if (priv->fw_alt) { 5757 rc = mwl8k_request_alt_fw(priv); 5758 if (rc) 5759 goto fail; 5760 priv->fw_state = FW_STATE_LOADING_ALT; 5761 } else 5762 goto fail; 5763 } else { 5764 priv->fw_ucode = fw; 5765 rc = mwl8k_firmware_load_success(priv); 5766 if (rc) 5767 goto fail; 5768 else 5769 complete(&priv->firmware_loading_complete); 5770 } 5771 break; 5772 5773 case FW_STATE_LOADING_ALT: 5774 if (!fw) { 5775 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5776 pci_name(priv->pdev), di->helper_image); 5777 goto fail; 5778 } 5779 priv->fw_ucode = fw; 5780 rc = mwl8k_firmware_load_success(priv); 5781 if (rc) 5782 goto fail; 5783 else 5784 complete(&priv->firmware_loading_complete); 5785 break; 5786 5787 default: 5788 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", 5789 MWL8K_NAME, priv->fw_state); 5790 BUG_ON(1); 5791 } 5792 5793 return; 5794 5795 fail: 5796 priv->fw_state = FW_STATE_ERROR; 5797 complete(&priv->firmware_loading_complete); 5798 device_release_driver(&priv->pdev->dev); 5799 mwl8k_release_firmware(priv); 5800 } 5801 5802 #define MAX_RESTART_ATTEMPTS 1 5803 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, 5804 bool nowait) 5805 { 5806 struct mwl8k_priv *priv = hw->priv; 5807 int rc; 5808 int count = MAX_RESTART_ATTEMPTS; 5809 5810 retry: 5811 /* Reset firmware and hardware */ 5812 mwl8k_hw_reset(priv); 5813 5814 /* Ask userland hotplug daemon for the device firmware */ 5815 rc = mwl8k_request_firmware(priv, fw_image, nowait); 5816 if (rc) { 5817 wiphy_err(hw->wiphy, "Firmware files not found\n"); 5818 return rc; 5819 } 5820 5821 if (nowait) 5822 return rc; 5823 5824 /* Load firmware into hardware */ 5825 rc = mwl8k_load_firmware(hw); 5826 if (rc) 5827 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 5828 5829 /* Reclaim memory once firmware is successfully loaded */ 5830 mwl8k_release_firmware(priv); 5831 5832 if (rc && count) { 5833 /* FW did not start successfully; 5834 * lets try one more time 5835 */ 5836 count--; 5837 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); 5838 msleep(20); 5839 goto retry; 5840 } 5841 5842 return rc; 5843 } 5844 5845 static int mwl8k_init_txqs(struct ieee80211_hw *hw) 5846 { 5847 struct mwl8k_priv *priv = hw->priv; 5848 int rc = 0; 5849 int i; 5850 5851 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 5852 rc = mwl8k_txq_init(hw, i); 5853 if (rc) 5854 break; 5855 if (priv->ap_fw) 5856 iowrite32(priv->txq[i].txd_dma, 5857 priv->sram + priv->txq_offset[i]); 5858 } 5859 return rc; 5860 } 5861 5862 /* initialize hw after successfully loading a firmware image */ 5863 static int mwl8k_probe_hw(struct ieee80211_hw *hw) 5864 { 5865 struct mwl8k_priv *priv = hw->priv; 5866 int rc = 0; 5867 int i; 5868 5869 if (priv->ap_fw) { 5870 priv->rxd_ops = priv->device_info->ap_rxd_ops; 5871 if (priv->rxd_ops == NULL) { 5872 wiphy_err(hw->wiphy, 5873 "Driver does not have AP firmware image support for this hardware\n"); 5874 rc = -ENOENT; 5875 goto err_stop_firmware; 5876 } 5877 } else { 5878 priv->rxd_ops = &rxd_sta_ops; 5879 } 5880 5881 priv->sniffer_enabled = false; 5882 priv->wmm_enabled = false; 5883 priv->pending_tx_pkts = 0; 5884 atomic_set(&priv->watchdog_event_pending, 0); 5885 5886 rc = mwl8k_rxq_init(hw, 0); 5887 if (rc) 5888 goto err_stop_firmware; 5889 rxq_refill(hw, 0, INT_MAX); 5890 5891 /* For the sta firmware, we need to know the dma addresses of tx queues 5892 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them 5893 * prior to issuing this command. But for the AP case, we learn the 5894 * total number of queues from the result CMD_GET_HW_SPEC, so for this 5895 * case we must initialize the tx queues after. 5896 */ 5897 priv->num_ampdu_queues = 0; 5898 if (!priv->ap_fw) { 5899 rc = mwl8k_init_txqs(hw); 5900 if (rc) 5901 goto err_free_queues; 5902 } 5903 5904 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 5905 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5906 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| 5907 MWL8K_A2H_INT_BA_WATCHDOG, 5908 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); 5909 iowrite32(MWL8K_A2H_INT_OPC_DONE, 5910 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 5911 5912 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 5913 IRQF_SHARED, MWL8K_NAME, hw); 5914 if (rc) { 5915 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 5916 goto err_free_queues; 5917 } 5918 5919 /* 5920 * When hw restart is requested, 5921 * mac80211 will take care of clearing 5922 * the ampdu streams, so do not clear 5923 * the ampdu state here 5924 */ 5925 if (!priv->hw_restart_in_progress) 5926 memset(priv->ampdu, 0, sizeof(priv->ampdu)); 5927 5928 /* 5929 * Temporarily enable interrupts. Initial firmware host 5930 * commands use interrupts and avoid polling. Disable 5931 * interrupts when done. 5932 */ 5933 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5934 5935 /* Get config data, mac addrs etc */ 5936 if (priv->ap_fw) { 5937 rc = mwl8k_cmd_get_hw_spec_ap(hw); 5938 if (!rc) 5939 rc = mwl8k_init_txqs(hw); 5940 if (!rc) 5941 rc = mwl8k_cmd_set_hw_spec(hw); 5942 } else { 5943 rc = mwl8k_cmd_get_hw_spec_sta(hw); 5944 } 5945 if (rc) { 5946 wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); 5947 goto err_free_irq; 5948 } 5949 5950 /* Turn radio off */ 5951 rc = mwl8k_cmd_radio_disable(hw); 5952 if (rc) { 5953 wiphy_err(hw->wiphy, "Cannot disable\n"); 5954 goto err_free_irq; 5955 } 5956 5957 /* Clear MAC address */ 5958 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); 5959 if (rc) { 5960 wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); 5961 goto err_free_irq; 5962 } 5963 5964 /* Configure Antennas */ 5965 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); 5966 if (rc) 5967 wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); 5968 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); 5969 if (rc) 5970 wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); 5971 5972 5973 /* Disable interrupts */ 5974 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5975 free_irq(priv->pdev->irq, hw); 5976 5977 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", 5978 priv->device_info->part_name, 5979 priv->hw_rev, hw->wiphy->perm_addr, 5980 priv->ap_fw ? "AP" : "STA", 5981 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, 5982 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); 5983 5984 return 0; 5985 5986 err_free_irq: 5987 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5988 free_irq(priv->pdev->irq, hw); 5989 5990 err_free_queues: 5991 for (i = 0; i < mwl8k_tx_queues(priv); i++) 5992 mwl8k_txq_deinit(hw, i); 5993 mwl8k_rxq_deinit(hw, 0); 5994 5995 err_stop_firmware: 5996 mwl8k_hw_reset(priv); 5997 5998 return rc; 5999 } 6000 6001 /* 6002 * invoke mwl8k_reload_firmware to change the firmware image after the device 6003 * has already been registered 6004 */ 6005 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) 6006 { 6007 int i, rc = 0; 6008 struct mwl8k_priv *priv = hw->priv; 6009 struct mwl8k_vif *vif, *tmp_vif; 6010 6011 mwl8k_stop(hw); 6012 mwl8k_rxq_deinit(hw, 0); 6013 6014 /* 6015 * All the existing interfaces are re-added by the ieee80211_reconfig; 6016 * which means driver should remove existing interfaces before calling 6017 * ieee80211_restart_hw 6018 */ 6019 if (priv->hw_restart_in_progress) 6020 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) 6021 mwl8k_remove_vif(priv, vif); 6022 6023 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6024 mwl8k_txq_deinit(hw, i); 6025 6026 rc = mwl8k_init_firmware(hw, fw_image, false); 6027 if (rc) 6028 goto fail; 6029 6030 rc = mwl8k_probe_hw(hw); 6031 if (rc) 6032 goto fail; 6033 6034 if (priv->hw_restart_in_progress) 6035 return rc; 6036 6037 rc = mwl8k_start(hw); 6038 if (rc) 6039 goto fail; 6040 6041 rc = mwl8k_config(hw, ~0); 6042 if (rc) 6043 goto fail; 6044 6045 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { 6046 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]); 6047 if (rc) 6048 goto fail; 6049 } 6050 6051 return rc; 6052 6053 fail: 6054 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); 6055 return rc; 6056 } 6057 6058 static const struct ieee80211_iface_limit ap_if_limits[] = { 6059 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, 6060 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, 6061 }; 6062 6063 static const struct ieee80211_iface_combination ap_if_comb = { 6064 .limits = ap_if_limits, 6065 .n_limits = ARRAY_SIZE(ap_if_limits), 6066 .max_interfaces = 8, 6067 .num_different_channels = 1, 6068 }; 6069 6070 6071 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) 6072 { 6073 struct ieee80211_hw *hw = priv->hw; 6074 int i, rc; 6075 6076 rc = mwl8k_load_firmware(hw); 6077 mwl8k_release_firmware(priv); 6078 if (rc) { 6079 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 6080 return rc; 6081 } 6082 6083 /* 6084 * Extra headroom is the size of the required DMA header 6085 * minus the size of the smallest 802.11 frame (CTS frame). 6086 */ 6087 hw->extra_tx_headroom = 6088 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); 6089 6090 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; 6091 6092 hw->queues = MWL8K_TX_WMM_QUEUES; 6093 6094 /* Set rssi values to dBm */ 6095 ieee80211_hw_set(hw, SIGNAL_DBM); 6096 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 6097 6098 /* 6099 * Ask mac80211 to not to trigger PS mode 6100 * based on PM bit of incoming frames. 6101 */ 6102 if (priv->ap_fw) 6103 ieee80211_hw_set(hw, AP_LINK_PS); 6104 6105 hw->vif_data_size = sizeof(struct mwl8k_vif); 6106 hw->sta_data_size = sizeof(struct mwl8k_sta); 6107 6108 priv->macids_used = 0; 6109 INIT_LIST_HEAD(&priv->vif_list); 6110 6111 /* Set default radio state and preamble */ 6112 priv->radio_on = false; 6113 priv->radio_short_preamble = false; 6114 6115 /* Finalize join worker */ 6116 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); 6117 /* Handle watchdog ba events */ 6118 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); 6119 /* To reload the firmware if it crashes */ 6120 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); 6121 6122 /* TX reclaim and RX tasklets. */ 6123 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw); 6124 tasklet_disable(&priv->poll_tx_task); 6125 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw); 6126 tasklet_disable(&priv->poll_rx_task); 6127 6128 /* Power management cookie */ 6129 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); 6130 if (priv->cookie == NULL) 6131 return -ENOMEM; 6132 6133 mutex_init(&priv->fw_mutex); 6134 priv->fw_mutex_owner = NULL; 6135 priv->fw_mutex_depth = 0; 6136 priv->hostcmd_wait = NULL; 6137 6138 spin_lock_init(&priv->tx_lock); 6139 6140 spin_lock_init(&priv->stream_lock); 6141 6142 priv->tx_wait = NULL; 6143 6144 rc = mwl8k_probe_hw(hw); 6145 if (rc) 6146 goto err_free_cookie; 6147 6148 hw->wiphy->interface_modes = 0; 6149 6150 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { 6151 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); 6152 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6153 hw->wiphy->iface_combinations = &ap_if_comb; 6154 hw->wiphy->n_iface_combinations = 1; 6155 } 6156 6157 if (priv->sta_macids_supported || priv->device_info->fw_image_sta) 6158 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6159 6160 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 6161 6162 rc = ieee80211_register_hw(hw); 6163 if (rc) { 6164 wiphy_err(hw->wiphy, "Cannot register device\n"); 6165 goto err_unprobe_hw; 6166 } 6167 6168 return 0; 6169 6170 err_unprobe_hw: 6171 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6172 mwl8k_txq_deinit(hw, i); 6173 mwl8k_rxq_deinit(hw, 0); 6174 6175 err_free_cookie: 6176 if (priv->cookie != NULL) 6177 pci_free_consistent(priv->pdev, 4, 6178 priv->cookie, priv->cookie_dma); 6179 6180 return rc; 6181 } 6182 static int mwl8k_probe(struct pci_dev *pdev, 6183 const struct pci_device_id *id) 6184 { 6185 static int printed_version; 6186 struct ieee80211_hw *hw; 6187 struct mwl8k_priv *priv; 6188 struct mwl8k_device_info *di; 6189 int rc; 6190 6191 if (!printed_version) { 6192 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); 6193 printed_version = 1; 6194 } 6195 6196 6197 rc = pci_enable_device(pdev); 6198 if (rc) { 6199 printk(KERN_ERR "%s: Cannot enable new PCI device\n", 6200 MWL8K_NAME); 6201 return rc; 6202 } 6203 6204 rc = pci_request_regions(pdev, MWL8K_NAME); 6205 if (rc) { 6206 printk(KERN_ERR "%s: Cannot obtain PCI resources\n", 6207 MWL8K_NAME); 6208 goto err_disable_device; 6209 } 6210 6211 pci_set_master(pdev); 6212 6213 6214 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); 6215 if (hw == NULL) { 6216 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); 6217 rc = -ENOMEM; 6218 goto err_free_reg; 6219 } 6220 6221 SET_IEEE80211_DEV(hw, &pdev->dev); 6222 pci_set_drvdata(pdev, hw); 6223 6224 priv = hw->priv; 6225 priv->hw = hw; 6226 priv->pdev = pdev; 6227 priv->device_info = &mwl8k_info_tbl[id->driver_data]; 6228 6229 if (id->driver_data == MWL8764) 6230 priv->is_8764 = true; 6231 6232 priv->sram = pci_iomap(pdev, 0, 0x10000); 6233 if (priv->sram == NULL) { 6234 wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); 6235 rc = -EIO; 6236 goto err_iounmap; 6237 } 6238 6239 /* 6240 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. 6241 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. 6242 */ 6243 priv->regs = pci_iomap(pdev, 1, 0x10000); 6244 if (priv->regs == NULL) { 6245 priv->regs = pci_iomap(pdev, 2, 0x10000); 6246 if (priv->regs == NULL) { 6247 wiphy_err(hw->wiphy, "Cannot map device registers\n"); 6248 rc = -EIO; 6249 goto err_iounmap; 6250 } 6251 } 6252 6253 /* 6254 * Choose the initial fw image depending on user input. If a second 6255 * image is available, make it the alternative image that will be 6256 * loaded if the first one fails. 6257 */ 6258 init_completion(&priv->firmware_loading_complete); 6259 di = priv->device_info; 6260 if (ap_mode_default && di->fw_image_ap) { 6261 priv->fw_pref = di->fw_image_ap; 6262 priv->fw_alt = di->fw_image_sta; 6263 } else if (!ap_mode_default && di->fw_image_sta) { 6264 priv->fw_pref = di->fw_image_sta; 6265 priv->fw_alt = di->fw_image_ap; 6266 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { 6267 printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); 6268 priv->fw_pref = di->fw_image_sta; 6269 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { 6270 printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); 6271 priv->fw_pref = di->fw_image_ap; 6272 } 6273 rc = mwl8k_init_firmware(hw, priv->fw_pref, true); 6274 if (rc) 6275 goto err_stop_firmware; 6276 6277 priv->hw_restart_in_progress = false; 6278 6279 priv->running_bsses = 0; 6280 6281 return rc; 6282 6283 err_stop_firmware: 6284 mwl8k_hw_reset(priv); 6285 6286 err_iounmap: 6287 if (priv->regs != NULL) 6288 pci_iounmap(pdev, priv->regs); 6289 6290 if (priv->sram != NULL) 6291 pci_iounmap(pdev, priv->sram); 6292 6293 ieee80211_free_hw(hw); 6294 6295 err_free_reg: 6296 pci_release_regions(pdev); 6297 6298 err_disable_device: 6299 pci_disable_device(pdev); 6300 6301 return rc; 6302 } 6303 6304 static void mwl8k_remove(struct pci_dev *pdev) 6305 { 6306 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 6307 struct mwl8k_priv *priv; 6308 int i; 6309 6310 if (hw == NULL) 6311 return; 6312 priv = hw->priv; 6313 6314 wait_for_completion(&priv->firmware_loading_complete); 6315 6316 if (priv->fw_state == FW_STATE_ERROR) { 6317 mwl8k_hw_reset(priv); 6318 goto unmap; 6319 } 6320 6321 ieee80211_stop_queues(hw); 6322 6323 ieee80211_unregister_hw(hw); 6324 6325 /* Remove TX reclaim and RX tasklets. */ 6326 tasklet_kill(&priv->poll_tx_task); 6327 tasklet_kill(&priv->poll_rx_task); 6328 6329 /* Stop hardware */ 6330 mwl8k_hw_reset(priv); 6331 6332 /* Return all skbs to mac80211 */ 6333 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6334 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 6335 6336 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6337 mwl8k_txq_deinit(hw, i); 6338 6339 mwl8k_rxq_deinit(hw, 0); 6340 6341 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma); 6342 6343 unmap: 6344 pci_iounmap(pdev, priv->regs); 6345 pci_iounmap(pdev, priv->sram); 6346 ieee80211_free_hw(hw); 6347 pci_release_regions(pdev); 6348 pci_disable_device(pdev); 6349 } 6350 6351 static struct pci_driver mwl8k_driver = { 6352 .name = MWL8K_NAME, 6353 .id_table = mwl8k_pci_id_table, 6354 .probe = mwl8k_probe, 6355 .remove = mwl8k_remove, 6356 }; 6357 6358 module_pci_driver(mwl8k_driver); 6359 6360 MODULE_DESCRIPTION(MWL8K_DESC); 6361 MODULE_VERSION(MWL8K_VERSION); 6362 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); 6363 MODULE_LICENSE("GPL"); 6364