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 = dma_map_single(&priv->pdev->dev, data, length, 609 DMA_TO_DEVICE); 610 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) 611 return -ENOMEM; 612 613 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 614 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 615 iowrite32(MWL8K_H2A_INT_DOORBELL, 616 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 617 iowrite32(MWL8K_H2A_INT_DUMMY, 618 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 619 620 loops = 1000; 621 do { 622 u32 int_code; 623 if (priv->is_8764) { 624 int_code = ioread32(regs + 625 MWL8K_HIU_H2A_INTERRUPT_STATUS); 626 if (int_code == 0) 627 break; 628 } else { 629 int_code = ioread32(regs + MWL8K_HIU_INT_CODE); 630 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { 631 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 632 break; 633 } 634 } 635 cond_resched(); 636 udelay(1); 637 } while (--loops); 638 639 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE); 640 641 return loops ? 0 : -ETIMEDOUT; 642 } 643 644 static int mwl8k_load_fw_image(struct mwl8k_priv *priv, 645 const u8 *data, size_t length) 646 { 647 struct mwl8k_cmd_pkt *cmd; 648 int done; 649 int rc = 0; 650 651 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); 652 if (cmd == NULL) 653 return -ENOMEM; 654 655 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); 656 cmd->seq_num = 0; 657 cmd->macid = 0; 658 cmd->result = 0; 659 660 done = 0; 661 while (length) { 662 int block_size = length > 256 ? 256 : length; 663 664 memcpy(cmd->payload, data + done, block_size); 665 cmd->length = cpu_to_le16(block_size); 666 667 rc = mwl8k_send_fw_load_cmd(priv, cmd, 668 sizeof(*cmd) + block_size); 669 if (rc) 670 break; 671 672 done += block_size; 673 length -= block_size; 674 } 675 676 if (!rc) { 677 cmd->length = 0; 678 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); 679 } 680 681 kfree(cmd); 682 683 return rc; 684 } 685 686 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, 687 const u8 *data, size_t length) 688 { 689 unsigned char *buffer; 690 int may_continue, rc = 0; 691 u32 done, prev_block_size; 692 693 buffer = kmalloc(1024, GFP_KERNEL); 694 if (buffer == NULL) 695 return -ENOMEM; 696 697 done = 0; 698 prev_block_size = 0; 699 may_continue = 1000; 700 while (may_continue > 0) { 701 u32 block_size; 702 703 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); 704 if (block_size & 1) { 705 block_size &= ~1; 706 may_continue--; 707 } else { 708 done += prev_block_size; 709 length -= prev_block_size; 710 } 711 712 if (block_size > 1024 || block_size > length) { 713 rc = -EOVERFLOW; 714 break; 715 } 716 717 if (length == 0) { 718 rc = 0; 719 break; 720 } 721 722 if (block_size == 0) { 723 rc = -EPROTO; 724 may_continue--; 725 udelay(1); 726 continue; 727 } 728 729 prev_block_size = block_size; 730 memcpy(buffer, data + done, block_size); 731 732 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); 733 if (rc) 734 break; 735 } 736 737 if (!rc && length != 0) 738 rc = -EREMOTEIO; 739 740 kfree(buffer); 741 742 return rc; 743 } 744 745 static int mwl8k_load_firmware(struct ieee80211_hw *hw) 746 { 747 struct mwl8k_priv *priv = hw->priv; 748 const struct firmware *fw = priv->fw_ucode; 749 int rc; 750 int loops; 751 752 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { 753 const struct firmware *helper = priv->fw_helper; 754 755 if (helper == NULL) { 756 printk(KERN_ERR "%s: helper image needed but none " 757 "given\n", pci_name(priv->pdev)); 758 return -EINVAL; 759 } 760 761 rc = mwl8k_load_fw_image(priv, helper->data, helper->size); 762 if (rc) { 763 printk(KERN_ERR "%s: unable to load firmware " 764 "helper image\n", pci_name(priv->pdev)); 765 return rc; 766 } 767 msleep(20); 768 769 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 770 } else { 771 if (priv->is_8764) 772 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 773 else 774 rc = mwl8k_load_fw_image(priv, fw->data, fw->size); 775 } 776 777 if (rc) { 778 printk(KERN_ERR "%s: unable to load firmware image\n", 779 pci_name(priv->pdev)); 780 return rc; 781 } 782 783 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); 784 785 loops = 500000; 786 do { 787 u32 ready_code; 788 789 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); 790 if (ready_code == MWL8K_FWAP_READY) { 791 priv->ap_fw = true; 792 break; 793 } else if (ready_code == MWL8K_FWSTA_READY) { 794 priv->ap_fw = false; 795 break; 796 } 797 798 cond_resched(); 799 udelay(1); 800 } while (--loops); 801 802 return loops ? 0 : -ETIMEDOUT; 803 } 804 805 806 /* DMA header used by firmware and hardware. */ 807 struct mwl8k_dma_data { 808 __le16 fwlen; 809 struct ieee80211_hdr wh; 810 char data[]; 811 } __packed __aligned(2); 812 813 /* Routines to add/remove DMA header from skb. */ 814 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) 815 { 816 struct mwl8k_dma_data *tr; 817 int hdrlen; 818 819 tr = (struct mwl8k_dma_data *)skb->data; 820 hdrlen = ieee80211_hdrlen(tr->wh.frame_control); 821 822 if (hdrlen != sizeof(tr->wh)) { 823 if (ieee80211_is_data_qos(tr->wh.frame_control)) { 824 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); 825 *((__le16 *)(tr->data - 2)) = qos; 826 } else { 827 memmove(tr->data - hdrlen, &tr->wh, hdrlen); 828 } 829 } 830 831 if (hdrlen != sizeof(*tr)) 832 skb_pull(skb, sizeof(*tr) - hdrlen); 833 } 834 835 #define REDUCED_TX_HEADROOM 8 836 837 static void 838 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, 839 int head_pad, int tail_pad) 840 { 841 struct ieee80211_hdr *wh; 842 int hdrlen; 843 int reqd_hdrlen; 844 struct mwl8k_dma_data *tr; 845 846 /* 847 * Add a firmware DMA header; the firmware requires that we 848 * present a 2-byte payload length followed by a 4-address 849 * header (without QoS field), followed (optionally) by any 850 * WEP/ExtIV header (but only filled in for CCMP). 851 */ 852 wh = (struct ieee80211_hdr *)skb->data; 853 854 hdrlen = ieee80211_hdrlen(wh->frame_control); 855 856 /* 857 * Check if skb_resize is required because of 858 * tx_headroom adjustment. 859 */ 860 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) 861 + REDUCED_TX_HEADROOM))) { 862 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { 863 864 wiphy_err(priv->hw->wiphy, 865 "Failed to reallocate TX buffer\n"); 866 return; 867 } 868 skb->truesize += REDUCED_TX_HEADROOM; 869 } 870 871 reqd_hdrlen = sizeof(*tr) + head_pad; 872 873 if (hdrlen != reqd_hdrlen) 874 skb_push(skb, reqd_hdrlen - hdrlen); 875 876 if (ieee80211_is_data_qos(wh->frame_control)) 877 hdrlen -= IEEE80211_QOS_CTL_LEN; 878 879 tr = (struct mwl8k_dma_data *)skb->data; 880 if (wh != &tr->wh) 881 memmove(&tr->wh, wh, hdrlen); 882 if (hdrlen != sizeof(tr->wh)) 883 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); 884 885 /* 886 * Firmware length is the length of the fully formed "802.11 887 * payload". That is, everything except for the 802.11 header. 888 * This includes all crypto material including the MIC. 889 */ 890 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); 891 } 892 893 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, 894 struct sk_buff *skb) 895 { 896 struct ieee80211_hdr *wh; 897 struct ieee80211_tx_info *tx_info; 898 struct ieee80211_key_conf *key_conf; 899 int data_pad; 900 int head_pad = 0; 901 902 wh = (struct ieee80211_hdr *)skb->data; 903 904 tx_info = IEEE80211_SKB_CB(skb); 905 906 key_conf = NULL; 907 if (ieee80211_is_data(wh->frame_control)) 908 key_conf = tx_info->control.hw_key; 909 910 /* 911 * Make sure the packet header is in the DMA header format (4-address 912 * without QoS), and add head & tail padding when HW crypto is enabled. 913 * 914 * We have the following trailer padding requirements: 915 * - WEP: 4 trailer bytes (ICV) 916 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) 917 * - CCMP: 8 trailer bytes (MIC) 918 */ 919 data_pad = 0; 920 if (key_conf != NULL) { 921 head_pad = key_conf->iv_len; 922 switch (key_conf->cipher) { 923 case WLAN_CIPHER_SUITE_WEP40: 924 case WLAN_CIPHER_SUITE_WEP104: 925 data_pad = 4; 926 break; 927 case WLAN_CIPHER_SUITE_TKIP: 928 data_pad = 12; 929 break; 930 case WLAN_CIPHER_SUITE_CCMP: 931 data_pad = 8; 932 break; 933 } 934 } 935 mwl8k_add_dma_header(priv, skb, head_pad, data_pad); 936 } 937 938 /* 939 * Packet reception for 88w8366/88w8764 AP firmware. 940 */ 941 struct mwl8k_rxd_ap { 942 __le16 pkt_len; 943 __u8 sq2; 944 __u8 rate; 945 __le32 pkt_phys_addr; 946 __le32 next_rxd_phys_addr; 947 __le16 qos_control; 948 __le16 htsig2; 949 __le32 hw_rssi_info; 950 __le32 hw_noise_floor_info; 951 __u8 noise_floor; 952 __u8 pad0[3]; 953 __u8 rssi; 954 __u8 rx_status; 955 __u8 channel; 956 __u8 rx_ctrl; 957 } __packed; 958 959 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 960 #define MWL8K_AP_RATE_INFO_40MHZ 0x40 961 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) 962 963 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 964 965 /* 8366/8764 AP rx_status bits */ 966 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 967 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF 968 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 969 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 970 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 971 972 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) 973 { 974 struct mwl8k_rxd_ap *rxd = _rxd; 975 976 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 977 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; 978 } 979 980 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) 981 { 982 struct mwl8k_rxd_ap *rxd = _rxd; 983 984 rxd->pkt_len = cpu_to_le16(len); 985 rxd->pkt_phys_addr = cpu_to_le32(addr); 986 wmb(); 987 rxd->rx_ctrl = 0; 988 } 989 990 static int 991 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, 992 __le16 *qos, s8 *noise) 993 { 994 struct mwl8k_rxd_ap *rxd = _rxd; 995 996 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) 997 return -1; 998 rmb(); 999 1000 memset(status, 0, sizeof(*status)); 1001 1002 status->signal = -rxd->rssi; 1003 *noise = -rxd->noise_floor; 1004 1005 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { 1006 status->encoding = RX_ENC_HT; 1007 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) 1008 status->bw = RATE_INFO_BW_40; 1009 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); 1010 } else { 1011 int i; 1012 1013 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { 1014 if (mwl8k_rates_24[i].hw_value == rxd->rate) { 1015 status->rate_idx = i; 1016 break; 1017 } 1018 } 1019 } 1020 1021 if (rxd->channel > 14) { 1022 status->band = NL80211_BAND_5GHZ; 1023 if (!(status->encoding == RX_ENC_HT) && 1024 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1025 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1026 } else { 1027 status->band = NL80211_BAND_2GHZ; 1028 } 1029 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1030 status->band); 1031 1032 *qos = rxd->qos_control; 1033 1034 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && 1035 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && 1036 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) 1037 status->flag |= RX_FLAG_MMIC_ERROR; 1038 1039 return le16_to_cpu(rxd->pkt_len); 1040 } 1041 1042 static struct rxd_ops rxd_ap_ops = { 1043 .rxd_size = sizeof(struct mwl8k_rxd_ap), 1044 .rxd_init = mwl8k_rxd_ap_init, 1045 .rxd_refill = mwl8k_rxd_ap_refill, 1046 .rxd_process = mwl8k_rxd_ap_process, 1047 }; 1048 1049 /* 1050 * Packet reception for STA firmware. 1051 */ 1052 struct mwl8k_rxd_sta { 1053 __le16 pkt_len; 1054 __u8 link_quality; 1055 __u8 noise_level; 1056 __le32 pkt_phys_addr; 1057 __le32 next_rxd_phys_addr; 1058 __le16 qos_control; 1059 __le16 rate_info; 1060 __le32 pad0[4]; 1061 __u8 rssi; 1062 __u8 channel; 1063 __le16 pad1; 1064 __u8 rx_ctrl; 1065 __u8 rx_status; 1066 __u8 pad2[2]; 1067 } __packed; 1068 1069 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 1070 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) 1071 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) 1072 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004 1073 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 1074 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 1075 1076 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 1077 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 1078 /* ICV=0 or MIC=1 */ 1079 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 1080 /* Key is uploaded only in failure case */ 1081 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 1082 1083 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) 1084 { 1085 struct mwl8k_rxd_sta *rxd = _rxd; 1086 1087 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 1088 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; 1089 } 1090 1091 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) 1092 { 1093 struct mwl8k_rxd_sta *rxd = _rxd; 1094 1095 rxd->pkt_len = cpu_to_le16(len); 1096 rxd->pkt_phys_addr = cpu_to_le32(addr); 1097 wmb(); 1098 rxd->rx_ctrl = 0; 1099 } 1100 1101 static int 1102 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, 1103 __le16 *qos, s8 *noise) 1104 { 1105 struct mwl8k_rxd_sta *rxd = _rxd; 1106 u16 rate_info; 1107 1108 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) 1109 return -1; 1110 rmb(); 1111 1112 rate_info = le16_to_cpu(rxd->rate_info); 1113 1114 memset(status, 0, sizeof(*status)); 1115 1116 status->signal = -rxd->rssi; 1117 *noise = -rxd->noise_level; 1118 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); 1119 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); 1120 1121 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) 1122 status->enc_flags |= RX_ENC_FLAG_SHORTPRE; 1123 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) 1124 status->bw = RATE_INFO_BW_40; 1125 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) 1126 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1127 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) 1128 status->encoding = RX_ENC_HT; 1129 1130 if (rxd->channel > 14) { 1131 status->band = NL80211_BAND_5GHZ; 1132 if (!(status->encoding == RX_ENC_HT) && 1133 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1134 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1135 } else { 1136 status->band = NL80211_BAND_2GHZ; 1137 } 1138 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1139 status->band); 1140 1141 *qos = rxd->qos_control; 1142 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && 1143 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) 1144 status->flag |= RX_FLAG_MMIC_ERROR; 1145 1146 return le16_to_cpu(rxd->pkt_len); 1147 } 1148 1149 static struct rxd_ops rxd_sta_ops = { 1150 .rxd_size = sizeof(struct mwl8k_rxd_sta), 1151 .rxd_init = mwl8k_rxd_sta_init, 1152 .rxd_refill = mwl8k_rxd_sta_refill, 1153 .rxd_process = mwl8k_rxd_sta_process, 1154 }; 1155 1156 1157 #define MWL8K_RX_DESCS 256 1158 #define MWL8K_RX_MAXSZ 3800 1159 1160 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) 1161 { 1162 struct mwl8k_priv *priv = hw->priv; 1163 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1164 int size; 1165 int i; 1166 1167 rxq->rxd_count = 0; 1168 rxq->head = 0; 1169 rxq->tail = 0; 1170 1171 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; 1172 1173 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma, 1174 GFP_KERNEL); 1175 if (rxq->rxd == NULL) { 1176 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); 1177 return -ENOMEM; 1178 } 1179 1180 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); 1181 if (rxq->buf == NULL) { 1182 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd, 1183 rxq->rxd_dma); 1184 return -ENOMEM; 1185 } 1186 1187 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1188 int desc_size; 1189 void *rxd; 1190 int nexti; 1191 dma_addr_t next_dma_addr; 1192 1193 desc_size = priv->rxd_ops->rxd_size; 1194 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); 1195 1196 nexti = i + 1; 1197 if (nexti == MWL8K_RX_DESCS) 1198 nexti = 0; 1199 next_dma_addr = rxq->rxd_dma + (nexti * desc_size); 1200 1201 priv->rxd_ops->rxd_init(rxd, next_dma_addr); 1202 } 1203 1204 return 0; 1205 } 1206 1207 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) 1208 { 1209 struct mwl8k_priv *priv = hw->priv; 1210 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1211 int refilled = 0; 1212 1213 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { 1214 struct sk_buff *skb; 1215 dma_addr_t addr; 1216 int rx; 1217 void *rxd; 1218 1219 skb = dev_alloc_skb(MWL8K_RX_MAXSZ); 1220 if (skb == NULL) 1221 break; 1222 1223 addr = dma_map_single(&priv->pdev->dev, skb->data, 1224 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1225 1226 rxq->rxd_count++; 1227 rx = rxq->tail++; 1228 if (rxq->tail == MWL8K_RX_DESCS) 1229 rxq->tail = 0; 1230 rxq->buf[rx].skb = skb; 1231 dma_unmap_addr_set(&rxq->buf[rx], dma, addr); 1232 1233 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); 1234 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); 1235 1236 refilled++; 1237 } 1238 1239 return refilled; 1240 } 1241 1242 /* Must be called only when the card's reception is completely halted */ 1243 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) 1244 { 1245 struct mwl8k_priv *priv = hw->priv; 1246 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1247 int i; 1248 1249 if (rxq->rxd == NULL) 1250 return; 1251 1252 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1253 if (rxq->buf[i].skb != NULL) { 1254 dma_unmap_single(&priv->pdev->dev, 1255 dma_unmap_addr(&rxq->buf[i], dma), 1256 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1257 dma_unmap_addr_set(&rxq->buf[i], dma, 0); 1258 1259 kfree_skb(rxq->buf[i].skb); 1260 rxq->buf[i].skb = NULL; 1261 } 1262 } 1263 1264 kfree(rxq->buf); 1265 rxq->buf = NULL; 1266 1267 dma_free_coherent(&priv->pdev->dev, 1268 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd, 1269 rxq->rxd_dma); 1270 rxq->rxd = NULL; 1271 } 1272 1273 1274 /* 1275 * Scan a list of BSSIDs to process for finalize join. 1276 * Allows for extension to process multiple BSSIDs. 1277 */ 1278 static inline int 1279 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) 1280 { 1281 return priv->capture_beacon && 1282 ieee80211_is_beacon(wh->frame_control) && 1283 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); 1284 } 1285 1286 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, 1287 struct sk_buff *skb) 1288 { 1289 struct mwl8k_priv *priv = hw->priv; 1290 1291 priv->capture_beacon = false; 1292 eth_zero_addr(priv->capture_bssid); 1293 1294 /* 1295 * Use GFP_ATOMIC as rxq_process is called from 1296 * the primary interrupt handler, memory allocation call 1297 * must not sleep. 1298 */ 1299 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); 1300 if (priv->beacon_skb != NULL) 1301 ieee80211_queue_work(hw, &priv->finalize_join_worker); 1302 } 1303 1304 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, 1305 u8 *bssid) 1306 { 1307 struct mwl8k_vif *mwl8k_vif; 1308 1309 list_for_each_entry(mwl8k_vif, 1310 vif_list, list) { 1311 if (memcmp(bssid, mwl8k_vif->bssid, 1312 ETH_ALEN) == 0) 1313 return mwl8k_vif; 1314 } 1315 1316 return NULL; 1317 } 1318 1319 static int rxq_process(struct ieee80211_hw *hw, int index, int limit) 1320 { 1321 struct mwl8k_priv *priv = hw->priv; 1322 struct mwl8k_vif *mwl8k_vif = NULL; 1323 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1324 int processed; 1325 1326 processed = 0; 1327 while (rxq->rxd_count && limit--) { 1328 struct sk_buff *skb; 1329 void *rxd; 1330 int pkt_len; 1331 struct ieee80211_rx_status status; 1332 struct ieee80211_hdr *wh; 1333 __le16 qos; 1334 1335 skb = rxq->buf[rxq->head].skb; 1336 if (skb == NULL) 1337 break; 1338 1339 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); 1340 1341 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, 1342 &priv->noise); 1343 if (pkt_len < 0) 1344 break; 1345 1346 rxq->buf[rxq->head].skb = NULL; 1347 1348 dma_unmap_single(&priv->pdev->dev, 1349 dma_unmap_addr(&rxq->buf[rxq->head], dma), 1350 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1351 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); 1352 1353 rxq->head++; 1354 if (rxq->head == MWL8K_RX_DESCS) 1355 rxq->head = 0; 1356 1357 rxq->rxd_count--; 1358 1359 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1360 1361 /* 1362 * Check for a pending join operation. Save a 1363 * copy of the beacon and schedule a tasklet to 1364 * send a FINALIZE_JOIN command to the firmware. 1365 */ 1366 if (mwl8k_capture_bssid(priv, (void *)skb->data)) 1367 mwl8k_save_beacon(hw, skb); 1368 1369 if (ieee80211_has_protected(wh->frame_control)) { 1370 1371 /* Check if hw crypto has been enabled for 1372 * this bss. If yes, set the status flags 1373 * accordingly 1374 */ 1375 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, 1376 wh->addr1); 1377 1378 if (mwl8k_vif != NULL && 1379 mwl8k_vif->is_hw_crypto_enabled) { 1380 /* 1381 * When MMIC ERROR is encountered 1382 * by the firmware, payload is 1383 * dropped and only 32 bytes of 1384 * mwl8k Firmware header is sent 1385 * to the host. 1386 * 1387 * We need to add four bytes of 1388 * key information. In it 1389 * MAC80211 expects keyidx set to 1390 * 0 for triggering Counter 1391 * Measure of MMIC failure. 1392 */ 1393 if (status.flag & RX_FLAG_MMIC_ERROR) { 1394 struct mwl8k_dma_data *tr; 1395 tr = (struct mwl8k_dma_data *)skb->data; 1396 memset((void *)&(tr->data), 0, 4); 1397 pkt_len += 4; 1398 } 1399 1400 if (!ieee80211_is_auth(wh->frame_control)) 1401 status.flag |= RX_FLAG_IV_STRIPPED | 1402 RX_FLAG_DECRYPTED | 1403 RX_FLAG_MMIC_STRIPPED; 1404 } 1405 } 1406 1407 skb_put(skb, pkt_len); 1408 mwl8k_remove_dma_header(skb, qos); 1409 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 1410 ieee80211_rx_irqsafe(hw, skb); 1411 1412 processed++; 1413 } 1414 1415 return processed; 1416 } 1417 1418 1419 /* 1420 * Packet transmission. 1421 */ 1422 1423 #define MWL8K_TXD_STATUS_OK 0x00000001 1424 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 1425 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 1426 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 1427 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 1428 1429 #define MWL8K_QOS_QLEN_UNSPEC 0xff00 1430 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060 1431 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 1432 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 1433 #define MWL8K_QOS_EOSP 0x0010 1434 1435 struct mwl8k_tx_desc { 1436 __le32 status; 1437 __u8 data_rate; 1438 __u8 tx_priority; 1439 __le16 qos_control; 1440 __le32 pkt_phys_addr; 1441 __le16 pkt_len; 1442 __u8 dest_MAC_addr[ETH_ALEN]; 1443 __le32 next_txd_phys_addr; 1444 __le32 timestamp; 1445 __le16 rate_info; 1446 __u8 peer_id; 1447 __u8 tx_frag_cnt; 1448 } __packed; 1449 1450 #define MWL8K_TX_DESCS 128 1451 1452 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) 1453 { 1454 struct mwl8k_priv *priv = hw->priv; 1455 struct mwl8k_tx_queue *txq = priv->txq + index; 1456 int size; 1457 int i; 1458 1459 txq->len = 0; 1460 txq->head = 0; 1461 txq->tail = 0; 1462 1463 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); 1464 1465 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma, 1466 GFP_KERNEL); 1467 if (txq->txd == NULL) { 1468 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); 1469 return -ENOMEM; 1470 } 1471 1472 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); 1473 if (txq->skb == NULL) { 1474 dma_free_coherent(&priv->pdev->dev, size, txq->txd, 1475 txq->txd_dma); 1476 txq->txd = NULL; 1477 return -ENOMEM; 1478 } 1479 1480 for (i = 0; i < MWL8K_TX_DESCS; i++) { 1481 struct mwl8k_tx_desc *tx_desc; 1482 int nexti; 1483 1484 tx_desc = txq->txd + i; 1485 nexti = (i + 1) % MWL8K_TX_DESCS; 1486 1487 tx_desc->status = 0; 1488 tx_desc->next_txd_phys_addr = 1489 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); 1490 } 1491 1492 return 0; 1493 } 1494 1495 static inline void mwl8k_tx_start(struct mwl8k_priv *priv) 1496 { 1497 iowrite32(MWL8K_H2A_INT_PPA_READY, 1498 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1499 iowrite32(MWL8K_H2A_INT_DUMMY, 1500 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1501 ioread32(priv->regs + MWL8K_HIU_INT_CODE); 1502 } 1503 1504 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) 1505 { 1506 struct mwl8k_priv *priv = hw->priv; 1507 int i; 1508 1509 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 1510 struct mwl8k_tx_queue *txq = priv->txq + i; 1511 int fw_owned = 0; 1512 int drv_owned = 0; 1513 int unused = 0; 1514 int desc; 1515 1516 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { 1517 struct mwl8k_tx_desc *tx_desc = txq->txd + desc; 1518 u32 status; 1519 1520 status = le32_to_cpu(tx_desc->status); 1521 if (status & MWL8K_TXD_STATUS_FW_OWNED) 1522 fw_owned++; 1523 else 1524 drv_owned++; 1525 1526 if (tx_desc->pkt_len == 0) 1527 unused++; 1528 } 1529 1530 wiphy_err(hw->wiphy, 1531 "txq[%d] len=%d head=%d tail=%d " 1532 "fw_owned=%d drv_owned=%d unused=%d\n", 1533 i, 1534 txq->len, txq->head, txq->tail, 1535 fw_owned, drv_owned, unused); 1536 } 1537 } 1538 1539 /* 1540 * Must be called with priv->fw_mutex held and tx queues stopped. 1541 */ 1542 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000 1543 1544 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) 1545 { 1546 struct mwl8k_priv *priv = hw->priv; 1547 DECLARE_COMPLETION_ONSTACK(tx_wait); 1548 int retry; 1549 int rc; 1550 1551 might_sleep(); 1552 1553 /* Since fw restart is in progress, allow only the firmware 1554 * commands from the restart code and block the other 1555 * commands since they are going to fail in any case since 1556 * the firmware has crashed 1557 */ 1558 if (priv->hw_restart_in_progress) { 1559 if (priv->hw_restart_owner == current) 1560 return 0; 1561 else 1562 return -EBUSY; 1563 } 1564 1565 if (atomic_read(&priv->watchdog_event_pending)) 1566 return 0; 1567 1568 /* 1569 * The TX queues are stopped at this point, so this test 1570 * doesn't need to take ->tx_lock. 1571 */ 1572 if (!priv->pending_tx_pkts) 1573 return 0; 1574 1575 retry = 1; 1576 rc = 0; 1577 1578 spin_lock_bh(&priv->tx_lock); 1579 priv->tx_wait = &tx_wait; 1580 while (!rc) { 1581 int oldcount; 1582 unsigned long timeout; 1583 1584 oldcount = priv->pending_tx_pkts; 1585 1586 spin_unlock_bh(&priv->tx_lock); 1587 timeout = wait_for_completion_timeout(&tx_wait, 1588 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); 1589 1590 if (atomic_read(&priv->watchdog_event_pending)) { 1591 spin_lock_bh(&priv->tx_lock); 1592 priv->tx_wait = NULL; 1593 spin_unlock_bh(&priv->tx_lock); 1594 return 0; 1595 } 1596 1597 spin_lock_bh(&priv->tx_lock); 1598 1599 if (timeout || !priv->pending_tx_pkts) { 1600 WARN_ON(priv->pending_tx_pkts); 1601 if (retry) 1602 wiphy_notice(hw->wiphy, "tx rings drained\n"); 1603 break; 1604 } 1605 1606 if (retry) { 1607 mwl8k_tx_start(priv); 1608 retry = 0; 1609 continue; 1610 } 1611 1612 if (priv->pending_tx_pkts < oldcount) { 1613 wiphy_notice(hw->wiphy, 1614 "waiting for tx rings to drain (%d -> %d pkts)\n", 1615 oldcount, priv->pending_tx_pkts); 1616 retry = 1; 1617 continue; 1618 } 1619 1620 priv->tx_wait = NULL; 1621 1622 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", 1623 MWL8K_TX_WAIT_TIMEOUT_MS); 1624 mwl8k_dump_tx_rings(hw); 1625 priv->hw_restart_in_progress = true; 1626 ieee80211_queue_work(hw, &priv->fw_reload); 1627 1628 rc = -ETIMEDOUT; 1629 } 1630 priv->tx_wait = NULL; 1631 spin_unlock_bh(&priv->tx_lock); 1632 1633 return rc; 1634 } 1635 1636 #define MWL8K_TXD_SUCCESS(status) \ 1637 ((status) & (MWL8K_TXD_STATUS_OK | \ 1638 MWL8K_TXD_STATUS_OK_RETRY | \ 1639 MWL8K_TXD_STATUS_OK_MORE_RETRY)) 1640 1641 static int mwl8k_tid_queue_mapping(u8 tid) 1642 { 1643 BUG_ON(tid > 7); 1644 1645 switch (tid) { 1646 case 0: 1647 case 3: 1648 return IEEE80211_AC_BE; 1649 case 1: 1650 case 2: 1651 return IEEE80211_AC_BK; 1652 case 4: 1653 case 5: 1654 return IEEE80211_AC_VI; 1655 case 6: 1656 case 7: 1657 return IEEE80211_AC_VO; 1658 default: 1659 return -1; 1660 } 1661 } 1662 1663 /* The firmware will fill in the rate information 1664 * for each packet that gets queued in the hardware 1665 * and these macros will interpret that info. 1666 */ 1667 1668 #define RI_FORMAT(a) (a & 0x0001) 1669 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) 1670 1671 static int 1672 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) 1673 { 1674 struct mwl8k_priv *priv = hw->priv; 1675 struct mwl8k_tx_queue *txq = priv->txq + index; 1676 int processed; 1677 1678 processed = 0; 1679 while (txq->len > 0 && limit--) { 1680 int tx; 1681 struct mwl8k_tx_desc *tx_desc; 1682 unsigned long addr; 1683 int size; 1684 struct sk_buff *skb; 1685 struct ieee80211_tx_info *info; 1686 u32 status; 1687 struct ieee80211_sta *sta; 1688 struct mwl8k_sta *sta_info = NULL; 1689 u16 rate_info; 1690 struct ieee80211_hdr *wh; 1691 1692 tx = txq->head; 1693 tx_desc = txq->txd + tx; 1694 1695 status = le32_to_cpu(tx_desc->status); 1696 1697 if (status & MWL8K_TXD_STATUS_FW_OWNED) { 1698 if (!force) 1699 break; 1700 tx_desc->status &= 1701 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); 1702 } 1703 1704 txq->head = (tx + 1) % MWL8K_TX_DESCS; 1705 BUG_ON(txq->len == 0); 1706 txq->len--; 1707 priv->pending_tx_pkts--; 1708 1709 addr = le32_to_cpu(tx_desc->pkt_phys_addr); 1710 size = le16_to_cpu(tx_desc->pkt_len); 1711 skb = txq->skb[tx]; 1712 txq->skb[tx] = NULL; 1713 1714 BUG_ON(skb == NULL); 1715 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE); 1716 1717 mwl8k_remove_dma_header(skb, tx_desc->qos_control); 1718 1719 wh = (struct ieee80211_hdr *) skb->data; 1720 1721 /* Mark descriptor as unused */ 1722 tx_desc->pkt_phys_addr = 0; 1723 tx_desc->pkt_len = 0; 1724 1725 info = IEEE80211_SKB_CB(skb); 1726 if (ieee80211_is_data(wh->frame_control)) { 1727 rcu_read_lock(); 1728 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, 1729 wh->addr2); 1730 if (sta) { 1731 sta_info = MWL8K_STA(sta); 1732 BUG_ON(sta_info == NULL); 1733 rate_info = le16_to_cpu(tx_desc->rate_info); 1734 /* If rate is < 6.5 Mpbs for an ht station 1735 * do not form an ampdu. If the station is a 1736 * legacy station (format = 0), do not form an 1737 * ampdu 1738 */ 1739 if (RI_RATE_ID_MCS(rate_info) < 1 || 1740 RI_FORMAT(rate_info) == 0) { 1741 sta_info->is_ampdu_allowed = false; 1742 } else { 1743 sta_info->is_ampdu_allowed = true; 1744 } 1745 } 1746 rcu_read_unlock(); 1747 } 1748 1749 ieee80211_tx_info_clear_status(info); 1750 1751 /* Rate control is happening in the firmware. 1752 * Ensure no tx rate is being reported. 1753 */ 1754 info->status.rates[0].idx = -1; 1755 info->status.rates[0].count = 1; 1756 1757 if (MWL8K_TXD_SUCCESS(status)) 1758 info->flags |= IEEE80211_TX_STAT_ACK; 1759 1760 ieee80211_tx_status_irqsafe(hw, skb); 1761 1762 processed++; 1763 } 1764 1765 return processed; 1766 } 1767 1768 /* must be called only when the card's transmit is completely halted */ 1769 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) 1770 { 1771 struct mwl8k_priv *priv = hw->priv; 1772 struct mwl8k_tx_queue *txq = priv->txq + index; 1773 1774 if (txq->txd == NULL) 1775 return; 1776 1777 mwl8k_txq_reclaim(hw, index, INT_MAX, 1); 1778 1779 kfree(txq->skb); 1780 txq->skb = NULL; 1781 1782 dma_free_coherent(&priv->pdev->dev, 1783 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), 1784 txq->txd, txq->txd_dma); 1785 txq->txd = NULL; 1786 } 1787 1788 /* caller must hold priv->stream_lock when calling the stream functions */ 1789 static struct mwl8k_ampdu_stream * 1790 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) 1791 { 1792 struct mwl8k_ampdu_stream *stream; 1793 struct mwl8k_priv *priv = hw->priv; 1794 int i; 1795 1796 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1797 stream = &priv->ampdu[i]; 1798 if (stream->state == AMPDU_NO_STREAM) { 1799 stream->sta = sta; 1800 stream->state = AMPDU_STREAM_NEW; 1801 stream->tid = tid; 1802 stream->idx = i; 1803 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", 1804 sta->addr, tid); 1805 return stream; 1806 } 1807 } 1808 return NULL; 1809 } 1810 1811 static int 1812 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1813 { 1814 int ret; 1815 1816 /* if the stream has already been started, don't start it again */ 1817 if (stream->state != AMPDU_STREAM_NEW) 1818 return 0; 1819 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); 1820 if (ret) 1821 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " 1822 "%d\n", stream->sta->addr, stream->tid, ret); 1823 else 1824 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", 1825 stream->sta->addr, stream->tid); 1826 return ret; 1827 } 1828 1829 static void 1830 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1831 { 1832 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, 1833 stream->tid); 1834 memset(stream, 0, sizeof(*stream)); 1835 } 1836 1837 static struct mwl8k_ampdu_stream * 1838 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) 1839 { 1840 struct mwl8k_priv *priv = hw->priv; 1841 int i; 1842 1843 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1844 struct mwl8k_ampdu_stream *stream; 1845 stream = &priv->ampdu[i]; 1846 if (stream->state == AMPDU_NO_STREAM) 1847 continue; 1848 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && 1849 stream->tid == tid) 1850 return stream; 1851 } 1852 return NULL; 1853 } 1854 1855 #define MWL8K_AMPDU_PACKET_THRESHOLD 64 1856 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) 1857 { 1858 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1859 struct tx_traffic_info *tx_stats; 1860 1861 BUG_ON(tid >= MWL8K_MAX_TID); 1862 tx_stats = &sta_info->tx_stats[tid]; 1863 1864 return sta_info->is_ampdu_allowed && 1865 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; 1866 } 1867 1868 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) 1869 { 1870 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1871 struct tx_traffic_info *tx_stats; 1872 1873 BUG_ON(tid >= MWL8K_MAX_TID); 1874 tx_stats = &sta_info->tx_stats[tid]; 1875 1876 if (tx_stats->start_time == 0) 1877 tx_stats->start_time = jiffies; 1878 1879 /* reset the packet count after each second elapses. If the number of 1880 * packets ever exceeds the ampdu_min_traffic threshold, we will allow 1881 * an ampdu stream to be started. 1882 */ 1883 if (jiffies - tx_stats->start_time > HZ) { 1884 tx_stats->pkts = 0; 1885 tx_stats->start_time = 0; 1886 } else 1887 tx_stats->pkts++; 1888 } 1889 1890 /* The hardware ampdu queues start from 5. 1891 * txpriorities for ampdu queues are 1892 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest 1893 * and queue 3 is lowest (queue 4 is reserved) 1894 */ 1895 #define BA_QUEUE 5 1896 1897 static void 1898 mwl8k_txq_xmit(struct ieee80211_hw *hw, 1899 int index, 1900 struct ieee80211_sta *sta, 1901 struct sk_buff *skb) 1902 { 1903 struct mwl8k_priv *priv = hw->priv; 1904 struct ieee80211_tx_info *tx_info; 1905 struct mwl8k_vif *mwl8k_vif; 1906 struct ieee80211_hdr *wh; 1907 struct mwl8k_tx_queue *txq; 1908 struct mwl8k_tx_desc *tx; 1909 dma_addr_t dma; 1910 u32 txstatus; 1911 u8 txdatarate; 1912 u16 qos; 1913 int txpriority; 1914 u8 tid = 0; 1915 struct mwl8k_ampdu_stream *stream = NULL; 1916 bool start_ba_session = false; 1917 bool mgmtframe = false; 1918 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1919 bool eapol_frame = false; 1920 1921 wh = (struct ieee80211_hdr *)skb->data; 1922 if (ieee80211_is_data_qos(wh->frame_control)) 1923 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); 1924 else 1925 qos = 0; 1926 1927 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 1928 eapol_frame = true; 1929 1930 if (ieee80211_is_mgmt(wh->frame_control)) 1931 mgmtframe = true; 1932 1933 if (priv->ap_fw) 1934 mwl8k_encapsulate_tx_frame(priv, skb); 1935 else 1936 mwl8k_add_dma_header(priv, skb, 0, 0); 1937 1938 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1939 1940 tx_info = IEEE80211_SKB_CB(skb); 1941 mwl8k_vif = MWL8K_VIF(tx_info->control.vif); 1942 1943 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1944 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1945 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); 1946 mwl8k_vif->seqno += 0x10; 1947 } 1948 1949 /* Setup firmware control bit fields for each frame type. */ 1950 txstatus = 0; 1951 txdatarate = 0; 1952 if (ieee80211_is_mgmt(wh->frame_control) || 1953 ieee80211_is_ctl(wh->frame_control)) { 1954 txdatarate = 0; 1955 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; 1956 } else if (ieee80211_is_data(wh->frame_control)) { 1957 txdatarate = 1; 1958 if (is_multicast_ether_addr(wh->addr1)) 1959 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; 1960 1961 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 1962 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) 1963 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; 1964 else 1965 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 1966 } 1967 1968 /* Queue ADDBA request in the respective data queue. While setting up 1969 * the ampdu stream, mac80211 queues further packets for that 1970 * particular ra/tid pair. However, packets piled up in the hardware 1971 * for that ra/tid pair will still go out. ADDBA request and the 1972 * related data packets going out from different queues asynchronously 1973 * will cause a shift in the receiver window which might result in 1974 * ampdu packets getting dropped at the receiver after the stream has 1975 * been setup. 1976 */ 1977 if (unlikely(ieee80211_is_action(wh->frame_control) && 1978 mgmt->u.action.category == WLAN_CATEGORY_BACK && 1979 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && 1980 priv->ap_fw)) { 1981 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); 1982 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; 1983 index = mwl8k_tid_queue_mapping(tid); 1984 } 1985 1986 txpriority = index; 1987 1988 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame && 1989 ieee80211_is_data_qos(wh->frame_control)) { 1990 tid = qos & 0xf; 1991 mwl8k_tx_count_packet(sta, tid); 1992 spin_lock(&priv->stream_lock); 1993 stream = mwl8k_lookup_stream(hw, sta->addr, tid); 1994 if (stream != NULL) { 1995 if (stream->state == AMPDU_STREAM_ACTIVE) { 1996 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); 1997 txpriority = (BA_QUEUE + stream->idx) % 1998 TOTAL_HW_TX_QUEUES; 1999 if (stream->idx <= 1) 2000 index = stream->idx + 2001 MWL8K_TX_WMM_QUEUES; 2002 2003 } else if (stream->state == AMPDU_STREAM_NEW) { 2004 /* We get here if the driver sends us packets 2005 * after we've initiated a stream, but before 2006 * our ampdu_action routine has been called 2007 * with IEEE80211_AMPDU_TX_START to get the SSN 2008 * for the ADDBA request. So this packet can 2009 * go out with no risk of sequence number 2010 * mismatch. No special handling is required. 2011 */ 2012 } else { 2013 /* Drop packets that would go out after the 2014 * ADDBA request was sent but before the ADDBA 2015 * response is received. If we don't do this, 2016 * the recipient would probably receive it 2017 * after the ADDBA request with SSN 0. This 2018 * will cause the recipient's BA receive window 2019 * to shift, which would cause the subsequent 2020 * packets in the BA stream to be discarded. 2021 * mac80211 queues our packets for us in this 2022 * case, so this is really just a safety check. 2023 */ 2024 wiphy_warn(hw->wiphy, 2025 "Cannot send packet while ADDBA " 2026 "dialog is underway.\n"); 2027 spin_unlock(&priv->stream_lock); 2028 dev_kfree_skb(skb); 2029 return; 2030 } 2031 } else { 2032 /* Defer calling mwl8k_start_stream so that the current 2033 * skb can go out before the ADDBA request. This 2034 * prevents sequence number mismatch at the recepient 2035 * as described above. 2036 */ 2037 if (mwl8k_ampdu_allowed(sta, tid)) { 2038 stream = mwl8k_add_stream(hw, sta, tid); 2039 if (stream != NULL) 2040 start_ba_session = true; 2041 } 2042 } 2043 spin_unlock(&priv->stream_lock); 2044 } else { 2045 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 2046 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 2047 } 2048 2049 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len, 2050 DMA_TO_DEVICE); 2051 2052 if (dma_mapping_error(&priv->pdev->dev, dma)) { 2053 wiphy_debug(hw->wiphy, 2054 "failed to dma map skb, dropping TX frame.\n"); 2055 if (start_ba_session) { 2056 spin_lock(&priv->stream_lock); 2057 mwl8k_remove_stream(hw, stream); 2058 spin_unlock(&priv->stream_lock); 2059 } 2060 dev_kfree_skb(skb); 2061 return; 2062 } 2063 2064 spin_lock_bh(&priv->tx_lock); 2065 2066 txq = priv->txq + index; 2067 2068 /* Mgmt frames that go out frequently are probe 2069 * responses. Other mgmt frames got out relatively 2070 * infrequently. Hence reserve 2 buffers so that 2071 * other mgmt frames do not get dropped due to an 2072 * already queued probe response in one of the 2073 * reserved buffers. 2074 */ 2075 2076 if (txq->len >= MWL8K_TX_DESCS - 2) { 2077 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { 2078 if (start_ba_session) { 2079 spin_lock(&priv->stream_lock); 2080 mwl8k_remove_stream(hw, stream); 2081 spin_unlock(&priv->stream_lock); 2082 } 2083 mwl8k_tx_start(priv); 2084 spin_unlock_bh(&priv->tx_lock); 2085 dma_unmap_single(&priv->pdev->dev, dma, skb->len, 2086 DMA_TO_DEVICE); 2087 dev_kfree_skb(skb); 2088 return; 2089 } 2090 } 2091 2092 BUG_ON(txq->skb[txq->tail] != NULL); 2093 txq->skb[txq->tail] = skb; 2094 2095 tx = txq->txd + txq->tail; 2096 tx->data_rate = txdatarate; 2097 tx->tx_priority = txpriority; 2098 tx->qos_control = cpu_to_le16(qos); 2099 tx->pkt_phys_addr = cpu_to_le32(dma); 2100 tx->pkt_len = cpu_to_le16(skb->len); 2101 tx->rate_info = 0; 2102 if (!priv->ap_fw && sta != NULL) 2103 tx->peer_id = MWL8K_STA(sta)->peer_id; 2104 else 2105 tx->peer_id = 0; 2106 2107 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) 2108 tx->timestamp = cpu_to_le32(ioread32(priv->regs + 2109 MWL8K_HW_TIMER_REGISTER)); 2110 else 2111 tx->timestamp = 0; 2112 2113 wmb(); 2114 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); 2115 2116 txq->len++; 2117 priv->pending_tx_pkts++; 2118 2119 txq->tail++; 2120 if (txq->tail == MWL8K_TX_DESCS) 2121 txq->tail = 0; 2122 2123 mwl8k_tx_start(priv); 2124 2125 spin_unlock_bh(&priv->tx_lock); 2126 2127 /* Initiate the ampdu session here */ 2128 if (start_ba_session) { 2129 spin_lock(&priv->stream_lock); 2130 if (mwl8k_start_stream(hw, stream)) 2131 mwl8k_remove_stream(hw, stream); 2132 spin_unlock(&priv->stream_lock); 2133 } 2134 } 2135 2136 2137 /* 2138 * Firmware access. 2139 * 2140 * We have the following requirements for issuing firmware commands: 2141 * - Some commands require that the packet transmit path is idle when 2142 * the command is issued. (For simplicity, we'll just quiesce the 2143 * transmit path for every command.) 2144 * - There are certain sequences of commands that need to be issued to 2145 * the hardware sequentially, with no other intervening commands. 2146 * 2147 * This leads to an implementation of a "firmware lock" as a mutex that 2148 * can be taken recursively, and which is taken by both the low-level 2149 * command submission function (mwl8k_post_cmd) as well as any users of 2150 * that function that require issuing of an atomic sequence of commands, 2151 * and quiesces the transmit path whenever it's taken. 2152 */ 2153 static int mwl8k_fw_lock(struct ieee80211_hw *hw) 2154 { 2155 struct mwl8k_priv *priv = hw->priv; 2156 2157 if (priv->fw_mutex_owner != current) { 2158 int rc; 2159 2160 mutex_lock(&priv->fw_mutex); 2161 ieee80211_stop_queues(hw); 2162 2163 rc = mwl8k_tx_wait_empty(hw); 2164 if (rc) { 2165 if (!priv->hw_restart_in_progress) 2166 ieee80211_wake_queues(hw); 2167 2168 mutex_unlock(&priv->fw_mutex); 2169 2170 return rc; 2171 } 2172 2173 priv->fw_mutex_owner = current; 2174 } 2175 2176 priv->fw_mutex_depth++; 2177 2178 return 0; 2179 } 2180 2181 static void mwl8k_fw_unlock(struct ieee80211_hw *hw) 2182 { 2183 struct mwl8k_priv *priv = hw->priv; 2184 2185 if (!--priv->fw_mutex_depth) { 2186 if (!priv->hw_restart_in_progress) 2187 ieee80211_wake_queues(hw); 2188 2189 priv->fw_mutex_owner = NULL; 2190 mutex_unlock(&priv->fw_mutex); 2191 } 2192 } 2193 2194 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, 2195 u32 bitmap); 2196 2197 /* 2198 * Command processing. 2199 */ 2200 2201 /* Timeout firmware commands after 10s */ 2202 #define MWL8K_CMD_TIMEOUT_MS 10000 2203 2204 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) 2205 { 2206 DECLARE_COMPLETION_ONSTACK(cmd_wait); 2207 struct mwl8k_priv *priv = hw->priv; 2208 void __iomem *regs = priv->regs; 2209 dma_addr_t dma_addr; 2210 unsigned int dma_size; 2211 int rc; 2212 unsigned long timeout = 0; 2213 u8 buf[32]; 2214 u32 bitmap = 0; 2215 2216 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", 2217 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); 2218 2219 /* Before posting firmware commands that could change the hardware 2220 * characteristics, make sure that all BSSes are stopped temporary. 2221 * Enable these stopped BSSes after completion of the commands 2222 */ 2223 2224 rc = mwl8k_fw_lock(hw); 2225 if (rc) 2226 return rc; 2227 2228 if (priv->ap_fw && priv->running_bsses) { 2229 switch (le16_to_cpu(cmd->code)) { 2230 case MWL8K_CMD_SET_RF_CHANNEL: 2231 case MWL8K_CMD_RADIO_CONTROL: 2232 case MWL8K_CMD_RF_TX_POWER: 2233 case MWL8K_CMD_TX_POWER: 2234 case MWL8K_CMD_RF_ANTENNA: 2235 case MWL8K_CMD_RTS_THRESHOLD: 2236 case MWL8K_CMD_MIMO_CONFIG: 2237 bitmap = priv->running_bsses; 2238 mwl8k_enable_bsses(hw, false, bitmap); 2239 break; 2240 } 2241 } 2242 2243 cmd->result = (__force __le16) 0xffff; 2244 dma_size = le16_to_cpu(cmd->length); 2245 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size, 2246 DMA_BIDIRECTIONAL); 2247 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) { 2248 rc = -ENOMEM; 2249 goto exit; 2250 } 2251 2252 priv->hostcmd_wait = &cmd_wait; 2253 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 2254 iowrite32(MWL8K_H2A_INT_DOORBELL, 2255 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2256 iowrite32(MWL8K_H2A_INT_DUMMY, 2257 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2258 2259 timeout = wait_for_completion_timeout(&cmd_wait, 2260 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); 2261 2262 priv->hostcmd_wait = NULL; 2263 2264 2265 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size, 2266 DMA_BIDIRECTIONAL); 2267 2268 if (!timeout) { 2269 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", 2270 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2271 MWL8K_CMD_TIMEOUT_MS); 2272 rc = -ETIMEDOUT; 2273 } else { 2274 int ms; 2275 2276 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); 2277 2278 rc = cmd->result ? -EINVAL : 0; 2279 if (rc) 2280 wiphy_err(hw->wiphy, "Command %s error 0x%x\n", 2281 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2282 le16_to_cpu(cmd->result)); 2283 else if (ms > 2000) 2284 wiphy_notice(hw->wiphy, "Command %s took %d ms\n", 2285 mwl8k_cmd_name(cmd->code, 2286 buf, sizeof(buf)), 2287 ms); 2288 } 2289 2290 exit: 2291 if (bitmap) 2292 mwl8k_enable_bsses(hw, true, bitmap); 2293 2294 mwl8k_fw_unlock(hw); 2295 2296 return rc; 2297 } 2298 2299 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, 2300 struct ieee80211_vif *vif, 2301 struct mwl8k_cmd_pkt *cmd) 2302 { 2303 if (vif != NULL) 2304 cmd->macid = MWL8K_VIF(vif)->macid; 2305 return mwl8k_post_cmd(hw, cmd); 2306 } 2307 2308 /* 2309 * Setup code shared between STA and AP firmware images. 2310 */ 2311 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) 2312 { 2313 struct mwl8k_priv *priv = hw->priv; 2314 2315 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); 2316 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); 2317 2318 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); 2319 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); 2320 2321 priv->band_24.band = NL80211_BAND_2GHZ; 2322 priv->band_24.channels = priv->channels_24; 2323 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); 2324 priv->band_24.bitrates = priv->rates_24; 2325 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); 2326 2327 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; 2328 } 2329 2330 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) 2331 { 2332 struct mwl8k_priv *priv = hw->priv; 2333 2334 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); 2335 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); 2336 2337 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); 2338 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); 2339 2340 priv->band_50.band = NL80211_BAND_5GHZ; 2341 priv->band_50.channels = priv->channels_50; 2342 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); 2343 priv->band_50.bitrates = priv->rates_50; 2344 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); 2345 2346 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; 2347 } 2348 2349 /* 2350 * CMD_GET_HW_SPEC (STA version). 2351 */ 2352 struct mwl8k_cmd_get_hw_spec_sta { 2353 struct mwl8k_cmd_pkt header; 2354 __u8 hw_rev; 2355 __u8 host_interface; 2356 __le16 num_mcaddrs; 2357 __u8 perm_addr[ETH_ALEN]; 2358 __le16 region_code; 2359 __le32 fw_rev; 2360 __le32 ps_cookie; 2361 __le32 caps; 2362 __u8 mcs_bitmap[16]; 2363 __le32 rx_queue_ptr; 2364 __le32 num_tx_queues; 2365 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; 2366 __le32 caps2; 2367 __le32 num_tx_desc_per_queue; 2368 __le32 total_rxd; 2369 } __packed; 2370 2371 #define MWL8K_CAP_MAX_AMSDU 0x20000000 2372 #define MWL8K_CAP_GREENFIELD 0x08000000 2373 #define MWL8K_CAP_AMPDU 0x04000000 2374 #define MWL8K_CAP_RX_STBC 0x01000000 2375 #define MWL8K_CAP_TX_STBC 0x00800000 2376 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 2377 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 2378 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 2379 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 2380 #define MWL8K_CAP_DELAY_BA 0x00003000 2381 #define MWL8K_CAP_MIMO 0x00000200 2382 #define MWL8K_CAP_40MHZ 0x00000100 2383 #define MWL8K_CAP_BAND_MASK 0x00000007 2384 #define MWL8K_CAP_5GHZ 0x00000004 2385 #define MWL8K_CAP_2GHZ4 0x00000001 2386 2387 static void 2388 mwl8k_set_ht_caps(struct ieee80211_hw *hw, 2389 struct ieee80211_supported_band *band, u32 cap) 2390 { 2391 int rx_streams; 2392 int tx_streams; 2393 2394 band->ht_cap.ht_supported = 1; 2395 2396 if (cap & MWL8K_CAP_MAX_AMSDU) 2397 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; 2398 if (cap & MWL8K_CAP_GREENFIELD) 2399 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; 2400 if (cap & MWL8K_CAP_AMPDU) { 2401 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2402 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 2403 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 2404 } 2405 if (cap & MWL8K_CAP_RX_STBC) 2406 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; 2407 if (cap & MWL8K_CAP_TX_STBC) 2408 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; 2409 if (cap & MWL8K_CAP_SHORTGI_40MHZ) 2410 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; 2411 if (cap & MWL8K_CAP_SHORTGI_20MHZ) 2412 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; 2413 if (cap & MWL8K_CAP_DELAY_BA) 2414 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; 2415 if (cap & MWL8K_CAP_40MHZ) 2416 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 2417 2418 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); 2419 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); 2420 2421 band->ht_cap.mcs.rx_mask[0] = 0xff; 2422 if (rx_streams >= 2) 2423 band->ht_cap.mcs.rx_mask[1] = 0xff; 2424 if (rx_streams >= 3) 2425 band->ht_cap.mcs.rx_mask[2] = 0xff; 2426 band->ht_cap.mcs.rx_mask[4] = 0x01; 2427 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2428 2429 if (rx_streams != tx_streams) { 2430 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 2431 band->ht_cap.mcs.tx_params |= (tx_streams - 1) << 2432 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; 2433 } 2434 } 2435 2436 static void 2437 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) 2438 { 2439 struct mwl8k_priv *priv = hw->priv; 2440 2441 if (priv->caps) 2442 return; 2443 2444 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { 2445 mwl8k_setup_2ghz_band(hw); 2446 if (caps & MWL8K_CAP_MIMO) 2447 mwl8k_set_ht_caps(hw, &priv->band_24, caps); 2448 } 2449 2450 if (caps & MWL8K_CAP_5GHZ) { 2451 mwl8k_setup_5ghz_band(hw); 2452 if (caps & MWL8K_CAP_MIMO) 2453 mwl8k_set_ht_caps(hw, &priv->band_50, caps); 2454 } 2455 2456 priv->caps = caps; 2457 } 2458 2459 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) 2460 { 2461 struct mwl8k_priv *priv = hw->priv; 2462 struct mwl8k_cmd_get_hw_spec_sta *cmd; 2463 int rc; 2464 int i; 2465 2466 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2467 if (cmd == NULL) 2468 return -ENOMEM; 2469 2470 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2471 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2472 2473 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2474 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2475 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2476 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2477 for (i = 0; i < mwl8k_tx_queues(priv); i++) 2478 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); 2479 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2480 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2481 2482 rc = mwl8k_post_cmd(hw, &cmd->header); 2483 2484 if (!rc) { 2485 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2486 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2487 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2488 priv->hw_rev = cmd->hw_rev; 2489 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2490 priv->ap_macids_supported = 0x00000000; 2491 priv->sta_macids_supported = 0x00000001; 2492 } 2493 2494 kfree(cmd); 2495 return rc; 2496 } 2497 2498 /* 2499 * CMD_GET_HW_SPEC (AP version). 2500 */ 2501 struct mwl8k_cmd_get_hw_spec_ap { 2502 struct mwl8k_cmd_pkt header; 2503 __u8 hw_rev; 2504 __u8 host_interface; 2505 __le16 num_wcb; 2506 __le16 num_mcaddrs; 2507 __u8 perm_addr[ETH_ALEN]; 2508 __le16 region_code; 2509 __le16 num_antenna; 2510 __le32 fw_rev; 2511 __le32 wcbbase0; 2512 __le32 rxwrptr; 2513 __le32 rxrdptr; 2514 __le32 ps_cookie; 2515 __le32 wcbbase1; 2516 __le32 wcbbase2; 2517 __le32 wcbbase3; 2518 __le32 fw_api_version; 2519 __le32 caps; 2520 __le32 num_of_ampdu_queues; 2521 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; 2522 } __packed; 2523 2524 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) 2525 { 2526 struct mwl8k_priv *priv = hw->priv; 2527 struct mwl8k_cmd_get_hw_spec_ap *cmd; 2528 int rc, i; 2529 u32 api_version; 2530 2531 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2532 if (cmd == NULL) 2533 return -ENOMEM; 2534 2535 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2536 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2537 2538 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2539 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2540 2541 rc = mwl8k_post_cmd(hw, &cmd->header); 2542 2543 if (!rc) { 2544 int off; 2545 2546 api_version = le32_to_cpu(cmd->fw_api_version); 2547 if (priv->device_info->fw_api_ap != api_version) { 2548 printk(KERN_ERR "%s: Unsupported fw API version for %s." 2549 " Expected %d got %d.\n", MWL8K_NAME, 2550 priv->device_info->part_name, 2551 priv->device_info->fw_api_ap, 2552 api_version); 2553 rc = -EINVAL; 2554 goto done; 2555 } 2556 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2557 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2558 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2559 priv->hw_rev = cmd->hw_rev; 2560 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2561 priv->ap_macids_supported = 0x000000ff; 2562 priv->sta_macids_supported = 0x00000100; 2563 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); 2564 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { 2565 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" 2566 " but we only support %d.\n", 2567 priv->num_ampdu_queues, 2568 MWL8K_MAX_AMPDU_QUEUES); 2569 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; 2570 } 2571 off = le32_to_cpu(cmd->rxwrptr) & 0xffff; 2572 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2573 2574 off = le32_to_cpu(cmd->rxrdptr) & 0xffff; 2575 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2576 2577 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; 2578 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; 2579 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; 2580 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; 2581 2582 for (i = 0; i < priv->num_ampdu_queues; i++) 2583 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = 2584 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; 2585 } 2586 2587 done: 2588 kfree(cmd); 2589 return rc; 2590 } 2591 2592 /* 2593 * CMD_SET_HW_SPEC. 2594 */ 2595 struct mwl8k_cmd_set_hw_spec { 2596 struct mwl8k_cmd_pkt header; 2597 __u8 hw_rev; 2598 __u8 host_interface; 2599 __le16 num_mcaddrs; 2600 __u8 perm_addr[ETH_ALEN]; 2601 __le16 region_code; 2602 __le32 fw_rev; 2603 __le32 ps_cookie; 2604 __le32 caps; 2605 __le32 rx_queue_ptr; 2606 __le32 num_tx_queues; 2607 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; 2608 __le32 flags; 2609 __le32 num_tx_desc_per_queue; 2610 __le32 total_rxd; 2611 } __packed; 2612 2613 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause 2614 * packets to expire 500 ms after the timestamp in the tx descriptor. That is, 2615 * the packets that are queued for more than 500ms, will be dropped in the 2616 * hardware. This helps minimizing the issues caused due to head-of-line 2617 * blocking where a slow client can hog the bandwidth and affect traffic to a 2618 * faster client. 2619 */ 2620 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 2621 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 2622 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 2623 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 2624 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 2625 2626 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) 2627 { 2628 struct mwl8k_priv *priv = hw->priv; 2629 struct mwl8k_cmd_set_hw_spec *cmd; 2630 int rc; 2631 int i; 2632 2633 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2634 if (cmd == NULL) 2635 return -ENOMEM; 2636 2637 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); 2638 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2639 2640 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2641 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2642 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2643 2644 /* 2645 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in 2646 * that order. Firmware has Q3 as highest priority and Q0 as lowest 2647 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the 2648 * priority is interpreted the right way in firmware. 2649 */ 2650 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 2651 int j = mwl8k_tx_queues(priv) - 1 - i; 2652 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); 2653 } 2654 2655 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | 2656 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | 2657 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | 2658 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | 2659 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); 2660 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2661 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2662 2663 rc = mwl8k_post_cmd(hw, &cmd->header); 2664 kfree(cmd); 2665 2666 return rc; 2667 } 2668 2669 /* 2670 * CMD_MAC_MULTICAST_ADR. 2671 */ 2672 struct mwl8k_cmd_mac_multicast_adr { 2673 struct mwl8k_cmd_pkt header; 2674 __le16 action; 2675 __le16 numaddr; 2676 __u8 addr[][ETH_ALEN]; 2677 }; 2678 2679 #define MWL8K_ENABLE_RX_DIRECTED 0x0001 2680 #define MWL8K_ENABLE_RX_MULTICAST 0x0002 2681 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 2682 #define MWL8K_ENABLE_RX_BROADCAST 0x0008 2683 2684 static struct mwl8k_cmd_pkt * 2685 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, 2686 struct netdev_hw_addr_list *mc_list) 2687 { 2688 struct mwl8k_priv *priv = hw->priv; 2689 struct mwl8k_cmd_mac_multicast_adr *cmd; 2690 int size; 2691 int mc_count = 0; 2692 2693 if (mc_list) 2694 mc_count = netdev_hw_addr_list_count(mc_list); 2695 2696 if (allmulti || mc_count > priv->num_mcaddrs) { 2697 allmulti = 1; 2698 mc_count = 0; 2699 } 2700 2701 size = sizeof(*cmd) + mc_count * ETH_ALEN; 2702 2703 cmd = kzalloc(size, GFP_ATOMIC); 2704 if (cmd == NULL) 2705 return NULL; 2706 2707 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); 2708 cmd->header.length = cpu_to_le16(size); 2709 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | 2710 MWL8K_ENABLE_RX_BROADCAST); 2711 2712 if (allmulti) { 2713 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); 2714 } else if (mc_count) { 2715 struct netdev_hw_addr *ha; 2716 int i = 0; 2717 2718 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); 2719 cmd->numaddr = cpu_to_le16(mc_count); 2720 netdev_hw_addr_list_for_each(ha, mc_list) { 2721 memcpy(cmd->addr[i], ha->addr, ETH_ALEN); 2722 } 2723 } 2724 2725 return &cmd->header; 2726 } 2727 2728 /* 2729 * CMD_GET_STAT. 2730 */ 2731 struct mwl8k_cmd_get_stat { 2732 struct mwl8k_cmd_pkt header; 2733 __le32 stats[64]; 2734 } __packed; 2735 2736 #define MWL8K_STAT_ACK_FAILURE 9 2737 #define MWL8K_STAT_RTS_FAILURE 12 2738 #define MWL8K_STAT_FCS_ERROR 24 2739 #define MWL8K_STAT_RTS_SUCCESS 11 2740 2741 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, 2742 struct ieee80211_low_level_stats *stats) 2743 { 2744 struct mwl8k_cmd_get_stat *cmd; 2745 int rc; 2746 2747 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2748 if (cmd == NULL) 2749 return -ENOMEM; 2750 2751 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); 2752 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2753 2754 rc = mwl8k_post_cmd(hw, &cmd->header); 2755 if (!rc) { 2756 stats->dot11ACKFailureCount = 2757 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); 2758 stats->dot11RTSFailureCount = 2759 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); 2760 stats->dot11FCSErrorCount = 2761 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); 2762 stats->dot11RTSSuccessCount = 2763 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); 2764 } 2765 kfree(cmd); 2766 2767 return rc; 2768 } 2769 2770 /* 2771 * CMD_RADIO_CONTROL. 2772 */ 2773 struct mwl8k_cmd_radio_control { 2774 struct mwl8k_cmd_pkt header; 2775 __le16 action; 2776 __le16 control; 2777 __le16 radio_on; 2778 } __packed; 2779 2780 static int 2781 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) 2782 { 2783 struct mwl8k_priv *priv = hw->priv; 2784 struct mwl8k_cmd_radio_control *cmd; 2785 int rc; 2786 2787 if (enable == priv->radio_on && !force) 2788 return 0; 2789 2790 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2791 if (cmd == NULL) 2792 return -ENOMEM; 2793 2794 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); 2795 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2796 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2797 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); 2798 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); 2799 2800 rc = mwl8k_post_cmd(hw, &cmd->header); 2801 kfree(cmd); 2802 2803 if (!rc) 2804 priv->radio_on = enable; 2805 2806 return rc; 2807 } 2808 2809 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) 2810 { 2811 return mwl8k_cmd_radio_control(hw, 0, 0); 2812 } 2813 2814 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) 2815 { 2816 return mwl8k_cmd_radio_control(hw, 1, 0); 2817 } 2818 2819 static int 2820 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) 2821 { 2822 struct mwl8k_priv *priv = hw->priv; 2823 2824 priv->radio_short_preamble = short_preamble; 2825 2826 return mwl8k_cmd_radio_control(hw, 1, 1); 2827 } 2828 2829 /* 2830 * CMD_RF_TX_POWER. 2831 */ 2832 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 2833 2834 struct mwl8k_cmd_rf_tx_power { 2835 struct mwl8k_cmd_pkt header; 2836 __le16 action; 2837 __le16 support_level; 2838 __le16 current_level; 2839 __le16 reserved; 2840 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; 2841 } __packed; 2842 2843 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) 2844 { 2845 struct mwl8k_cmd_rf_tx_power *cmd; 2846 int rc; 2847 2848 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2849 if (cmd == NULL) 2850 return -ENOMEM; 2851 2852 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); 2853 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2854 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2855 cmd->support_level = cpu_to_le16(dBm); 2856 2857 rc = mwl8k_post_cmd(hw, &cmd->header); 2858 kfree(cmd); 2859 2860 return rc; 2861 } 2862 2863 /* 2864 * CMD_TX_POWER. 2865 */ 2866 #define MWL8K_TX_POWER_LEVEL_TOTAL 12 2867 2868 struct mwl8k_cmd_tx_power { 2869 struct mwl8k_cmd_pkt header; 2870 __le16 action; 2871 __le16 band; 2872 __le16 channel; 2873 __le16 bw; 2874 __le16 sub_ch; 2875 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; 2876 } __packed; 2877 2878 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, 2879 struct ieee80211_conf *conf, 2880 unsigned short pwr) 2881 { 2882 struct ieee80211_channel *channel = conf->chandef.chan; 2883 enum nl80211_channel_type channel_type = 2884 cfg80211_get_chandef_type(&conf->chandef); 2885 struct mwl8k_cmd_tx_power *cmd; 2886 int rc; 2887 int i; 2888 2889 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2890 if (cmd == NULL) 2891 return -ENOMEM; 2892 2893 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); 2894 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2895 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); 2896 2897 if (channel->band == NL80211_BAND_2GHZ) 2898 cmd->band = cpu_to_le16(0x1); 2899 else if (channel->band == NL80211_BAND_5GHZ) 2900 cmd->band = cpu_to_le16(0x4); 2901 2902 cmd->channel = cpu_to_le16(channel->hw_value); 2903 2904 if (channel_type == NL80211_CHAN_NO_HT || 2905 channel_type == NL80211_CHAN_HT20) { 2906 cmd->bw = cpu_to_le16(0x2); 2907 } else { 2908 cmd->bw = cpu_to_le16(0x4); 2909 if (channel_type == NL80211_CHAN_HT40MINUS) 2910 cmd->sub_ch = cpu_to_le16(0x3); 2911 else if (channel_type == NL80211_CHAN_HT40PLUS) 2912 cmd->sub_ch = cpu_to_le16(0x1); 2913 } 2914 2915 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) 2916 cmd->power_level_list[i] = cpu_to_le16(pwr); 2917 2918 rc = mwl8k_post_cmd(hw, &cmd->header); 2919 kfree(cmd); 2920 2921 return rc; 2922 } 2923 2924 /* 2925 * CMD_RF_ANTENNA. 2926 */ 2927 struct mwl8k_cmd_rf_antenna { 2928 struct mwl8k_cmd_pkt header; 2929 __le16 antenna; 2930 __le16 mode; 2931 } __packed; 2932 2933 #define MWL8K_RF_ANTENNA_RX 1 2934 #define MWL8K_RF_ANTENNA_TX 2 2935 2936 static int 2937 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) 2938 { 2939 struct mwl8k_cmd_rf_antenna *cmd; 2940 int rc; 2941 2942 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2943 if (cmd == NULL) 2944 return -ENOMEM; 2945 2946 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); 2947 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2948 cmd->antenna = cpu_to_le16(antenna); 2949 cmd->mode = cpu_to_le16(mask); 2950 2951 rc = mwl8k_post_cmd(hw, &cmd->header); 2952 kfree(cmd); 2953 2954 return rc; 2955 } 2956 2957 /* 2958 * CMD_SET_BEACON. 2959 */ 2960 struct mwl8k_cmd_set_beacon { 2961 struct mwl8k_cmd_pkt header; 2962 __le16 beacon_len; 2963 __u8 beacon[]; 2964 }; 2965 2966 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, 2967 struct ieee80211_vif *vif, u8 *beacon, int len) 2968 { 2969 struct mwl8k_cmd_set_beacon *cmd; 2970 int rc; 2971 2972 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); 2973 if (cmd == NULL) 2974 return -ENOMEM; 2975 2976 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); 2977 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); 2978 cmd->beacon_len = cpu_to_le16(len); 2979 memcpy(cmd->beacon, beacon, len); 2980 2981 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 2982 kfree(cmd); 2983 2984 return rc; 2985 } 2986 2987 /* 2988 * CMD_SET_PRE_SCAN. 2989 */ 2990 struct mwl8k_cmd_set_pre_scan { 2991 struct mwl8k_cmd_pkt header; 2992 } __packed; 2993 2994 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) 2995 { 2996 struct mwl8k_cmd_set_pre_scan *cmd; 2997 int rc; 2998 2999 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3000 if (cmd == NULL) 3001 return -ENOMEM; 3002 3003 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); 3004 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3005 3006 rc = mwl8k_post_cmd(hw, &cmd->header); 3007 kfree(cmd); 3008 3009 return rc; 3010 } 3011 3012 /* 3013 * CMD_BBP_REG_ACCESS. 3014 */ 3015 struct mwl8k_cmd_bbp_reg_access { 3016 struct mwl8k_cmd_pkt header; 3017 __le16 action; 3018 __le16 offset; 3019 u8 value; 3020 u8 rsrv[3]; 3021 } __packed; 3022 3023 static int 3024 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, 3025 u16 action, 3026 u16 offset, 3027 u8 *value) 3028 { 3029 struct mwl8k_cmd_bbp_reg_access *cmd; 3030 int rc; 3031 3032 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3033 if (cmd == NULL) 3034 return -ENOMEM; 3035 3036 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); 3037 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3038 cmd->action = cpu_to_le16(action); 3039 cmd->offset = cpu_to_le16(offset); 3040 3041 rc = mwl8k_post_cmd(hw, &cmd->header); 3042 3043 if (!rc) 3044 *value = cmd->value; 3045 else 3046 *value = 0; 3047 3048 kfree(cmd); 3049 3050 return rc; 3051 } 3052 3053 /* 3054 * CMD_SET_POST_SCAN. 3055 */ 3056 struct mwl8k_cmd_set_post_scan { 3057 struct mwl8k_cmd_pkt header; 3058 __le32 isibss; 3059 __u8 bssid[ETH_ALEN]; 3060 } __packed; 3061 3062 static int 3063 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) 3064 { 3065 struct mwl8k_cmd_set_post_scan *cmd; 3066 int rc; 3067 3068 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3069 if (cmd == NULL) 3070 return -ENOMEM; 3071 3072 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); 3073 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3074 cmd->isibss = 0; 3075 memcpy(cmd->bssid, mac, ETH_ALEN); 3076 3077 rc = mwl8k_post_cmd(hw, &cmd->header); 3078 kfree(cmd); 3079 3080 return rc; 3081 } 3082 3083 static int freq_to_idx(struct mwl8k_priv *priv, int freq) 3084 { 3085 struct ieee80211_supported_band *sband; 3086 int band, ch, idx = 0; 3087 3088 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { 3089 sband = priv->hw->wiphy->bands[band]; 3090 if (!sband) 3091 continue; 3092 3093 for (ch = 0; ch < sband->n_channels; ch++, idx++) 3094 if (sband->channels[ch].center_freq == freq) 3095 goto exit; 3096 } 3097 3098 exit: 3099 return idx; 3100 } 3101 3102 static void mwl8k_update_survey(struct mwl8k_priv *priv, 3103 struct ieee80211_channel *channel) 3104 { 3105 u32 cca_cnt, rx_rdy; 3106 s8 nf = 0, idx; 3107 struct survey_info *survey; 3108 3109 idx = freq_to_idx(priv, priv->acs_chan->center_freq); 3110 if (idx >= MWL8K_NUM_CHANS) { 3111 wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); 3112 return; 3113 } 3114 3115 survey = &priv->survey[idx]; 3116 3117 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); 3118 cca_cnt /= 1000; /* uSecs to mSecs */ 3119 survey->time_busy = (u64) cca_cnt; 3120 3121 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); 3122 rx_rdy /= 1000; /* uSecs to mSecs */ 3123 survey->time_rx = (u64) rx_rdy; 3124 3125 priv->channel_time = jiffies - priv->channel_time; 3126 survey->time = jiffies_to_msecs(priv->channel_time); 3127 3128 survey->channel = channel; 3129 3130 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); 3131 3132 /* Make sure sign is negative else ACS at hostapd fails */ 3133 survey->noise = nf * -1; 3134 3135 survey->filled = SURVEY_INFO_NOISE_DBM | 3136 SURVEY_INFO_TIME | 3137 SURVEY_INFO_TIME_BUSY | 3138 SURVEY_INFO_TIME_RX; 3139 } 3140 3141 /* 3142 * CMD_SET_RF_CHANNEL. 3143 */ 3144 struct mwl8k_cmd_set_rf_channel { 3145 struct mwl8k_cmd_pkt header; 3146 __le16 action; 3147 __u8 current_channel; 3148 __le32 channel_flags; 3149 } __packed; 3150 3151 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, 3152 struct ieee80211_conf *conf) 3153 { 3154 struct ieee80211_channel *channel = conf->chandef.chan; 3155 enum nl80211_channel_type channel_type = 3156 cfg80211_get_chandef_type(&conf->chandef); 3157 struct mwl8k_cmd_set_rf_channel *cmd; 3158 struct mwl8k_priv *priv = hw->priv; 3159 int rc; 3160 3161 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3162 if (cmd == NULL) 3163 return -ENOMEM; 3164 3165 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); 3166 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3167 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3168 cmd->current_channel = channel->hw_value; 3169 3170 if (channel->band == NL80211_BAND_2GHZ) 3171 cmd->channel_flags |= cpu_to_le32(0x00000001); 3172 else if (channel->band == NL80211_BAND_5GHZ) 3173 cmd->channel_flags |= cpu_to_le32(0x00000004); 3174 3175 if (!priv->sw_scan_start) { 3176 if (channel_type == NL80211_CHAN_NO_HT || 3177 channel_type == NL80211_CHAN_HT20) 3178 cmd->channel_flags |= cpu_to_le32(0x00000080); 3179 else if (channel_type == NL80211_CHAN_HT40MINUS) 3180 cmd->channel_flags |= cpu_to_le32(0x000001900); 3181 else if (channel_type == NL80211_CHAN_HT40PLUS) 3182 cmd->channel_flags |= cpu_to_le32(0x000000900); 3183 } else { 3184 cmd->channel_flags |= cpu_to_le32(0x00000080); 3185 } 3186 3187 if (priv->sw_scan_start) { 3188 /* Store current channel stats 3189 * before switching to newer one. 3190 * This will be processed only for AP fw. 3191 */ 3192 if (priv->channel_time != 0) 3193 mwl8k_update_survey(priv, priv->acs_chan); 3194 3195 priv->channel_time = jiffies; 3196 priv->acs_chan = channel; 3197 } 3198 3199 rc = mwl8k_post_cmd(hw, &cmd->header); 3200 kfree(cmd); 3201 3202 return rc; 3203 } 3204 3205 /* 3206 * CMD_SET_AID. 3207 */ 3208 #define MWL8K_FRAME_PROT_DISABLED 0x00 3209 #define MWL8K_FRAME_PROT_11G 0x07 3210 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 3211 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 3212 3213 struct mwl8k_cmd_update_set_aid { 3214 struct mwl8k_cmd_pkt header; 3215 __le16 aid; 3216 3217 /* AP's MAC address (BSSID) */ 3218 __u8 bssid[ETH_ALEN]; 3219 __le16 protection_mode; 3220 __u8 supp_rates[14]; 3221 } __packed; 3222 3223 static void legacy_rate_mask_to_array(u8 *rates, u32 mask) 3224 { 3225 int i; 3226 int j; 3227 3228 /* 3229 * Clear nonstandard rate 4. 3230 */ 3231 mask &= 0x1fef; 3232 3233 for (i = 0, j = 0; i < 13; i++) { 3234 if (mask & (1 << i)) 3235 rates[j++] = mwl8k_rates_24[i].hw_value; 3236 } 3237 } 3238 3239 static int 3240 mwl8k_cmd_set_aid(struct ieee80211_hw *hw, 3241 struct ieee80211_vif *vif, u32 legacy_rate_mask) 3242 { 3243 struct mwl8k_cmd_update_set_aid *cmd; 3244 u16 prot_mode; 3245 int rc; 3246 3247 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3248 if (cmd == NULL) 3249 return -ENOMEM; 3250 3251 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); 3252 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3253 cmd->aid = cpu_to_le16(vif->bss_conf.aid); 3254 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 3255 3256 if (vif->bss_conf.use_cts_prot) { 3257 prot_mode = MWL8K_FRAME_PROT_11G; 3258 } else { 3259 switch (vif->bss_conf.ht_operation_mode & 3260 IEEE80211_HT_OP_MODE_PROTECTION) { 3261 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 3262 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; 3263 break; 3264 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 3265 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; 3266 break; 3267 default: 3268 prot_mode = MWL8K_FRAME_PROT_DISABLED; 3269 break; 3270 } 3271 } 3272 cmd->protection_mode = cpu_to_le16(prot_mode); 3273 3274 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); 3275 3276 rc = mwl8k_post_cmd(hw, &cmd->header); 3277 kfree(cmd); 3278 3279 return rc; 3280 } 3281 3282 /* 3283 * CMD_SET_RATE. 3284 */ 3285 struct mwl8k_cmd_set_rate { 3286 struct mwl8k_cmd_pkt header; 3287 __u8 legacy_rates[14]; 3288 3289 /* Bitmap for supported MCS codes. */ 3290 __u8 mcs_set[16]; 3291 __u8 reserved[16]; 3292 } __packed; 3293 3294 static int 3295 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3296 u32 legacy_rate_mask, u8 *mcs_rates) 3297 { 3298 struct mwl8k_cmd_set_rate *cmd; 3299 int rc; 3300 3301 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3302 if (cmd == NULL) 3303 return -ENOMEM; 3304 3305 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); 3306 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3307 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); 3308 memcpy(cmd->mcs_set, mcs_rates, 16); 3309 3310 rc = mwl8k_post_cmd(hw, &cmd->header); 3311 kfree(cmd); 3312 3313 return rc; 3314 } 3315 3316 /* 3317 * CMD_FINALIZE_JOIN. 3318 */ 3319 #define MWL8K_FJ_BEACON_MAXLEN 128 3320 3321 struct mwl8k_cmd_finalize_join { 3322 struct mwl8k_cmd_pkt header; 3323 __le32 sleep_interval; /* Number of beacon periods to sleep */ 3324 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; 3325 } __packed; 3326 3327 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, 3328 int framelen, int dtim) 3329 { 3330 struct mwl8k_cmd_finalize_join *cmd; 3331 struct ieee80211_mgmt *payload = frame; 3332 int payload_len; 3333 int rc; 3334 3335 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3336 if (cmd == NULL) 3337 return -ENOMEM; 3338 3339 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); 3340 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3341 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); 3342 3343 payload_len = framelen - ieee80211_hdrlen(payload->frame_control); 3344 if (payload_len < 0) 3345 payload_len = 0; 3346 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) 3347 payload_len = MWL8K_FJ_BEACON_MAXLEN; 3348 3349 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); 3350 3351 rc = mwl8k_post_cmd(hw, &cmd->header); 3352 kfree(cmd); 3353 3354 return rc; 3355 } 3356 3357 /* 3358 * CMD_SET_RTS_THRESHOLD. 3359 */ 3360 struct mwl8k_cmd_set_rts_threshold { 3361 struct mwl8k_cmd_pkt header; 3362 __le16 action; 3363 __le16 threshold; 3364 } __packed; 3365 3366 static int 3367 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) 3368 { 3369 struct mwl8k_cmd_set_rts_threshold *cmd; 3370 int rc; 3371 3372 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3373 if (cmd == NULL) 3374 return -ENOMEM; 3375 3376 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); 3377 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3378 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3379 cmd->threshold = cpu_to_le16(rts_thresh); 3380 3381 rc = mwl8k_post_cmd(hw, &cmd->header); 3382 kfree(cmd); 3383 3384 return rc; 3385 } 3386 3387 /* 3388 * CMD_SET_SLOT. 3389 */ 3390 struct mwl8k_cmd_set_slot { 3391 struct mwl8k_cmd_pkt header; 3392 __le16 action; 3393 __u8 short_slot; 3394 } __packed; 3395 3396 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) 3397 { 3398 struct mwl8k_cmd_set_slot *cmd; 3399 int rc; 3400 3401 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3402 if (cmd == NULL) 3403 return -ENOMEM; 3404 3405 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); 3406 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3407 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3408 cmd->short_slot = short_slot_time; 3409 3410 rc = mwl8k_post_cmd(hw, &cmd->header); 3411 kfree(cmd); 3412 3413 return rc; 3414 } 3415 3416 /* 3417 * CMD_SET_EDCA_PARAMS. 3418 */ 3419 struct mwl8k_cmd_set_edca_params { 3420 struct mwl8k_cmd_pkt header; 3421 3422 /* See MWL8K_SET_EDCA_XXX below */ 3423 __le16 action; 3424 3425 /* TX opportunity in units of 32 us */ 3426 __le16 txop; 3427 3428 union { 3429 struct { 3430 /* Log exponent of max contention period: 0...15 */ 3431 __le32 log_cw_max; 3432 3433 /* Log exponent of min contention period: 0...15 */ 3434 __le32 log_cw_min; 3435 3436 /* Adaptive interframe spacing in units of 32us */ 3437 __u8 aifs; 3438 3439 /* TX queue to configure */ 3440 __u8 txq; 3441 } ap; 3442 struct { 3443 /* Log exponent of max contention period: 0...15 */ 3444 __u8 log_cw_max; 3445 3446 /* Log exponent of min contention period: 0...15 */ 3447 __u8 log_cw_min; 3448 3449 /* Adaptive interframe spacing in units of 32us */ 3450 __u8 aifs; 3451 3452 /* TX queue to configure */ 3453 __u8 txq; 3454 } sta; 3455 }; 3456 } __packed; 3457 3458 #define MWL8K_SET_EDCA_CW 0x01 3459 #define MWL8K_SET_EDCA_TXOP 0x02 3460 #define MWL8K_SET_EDCA_AIFS 0x04 3461 3462 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ 3463 MWL8K_SET_EDCA_TXOP | \ 3464 MWL8K_SET_EDCA_AIFS) 3465 3466 static int 3467 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, 3468 __u16 cw_min, __u16 cw_max, 3469 __u8 aifs, __u16 txop) 3470 { 3471 struct mwl8k_priv *priv = hw->priv; 3472 struct mwl8k_cmd_set_edca_params *cmd; 3473 int rc; 3474 3475 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3476 if (cmd == NULL) 3477 return -ENOMEM; 3478 3479 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); 3480 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3481 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); 3482 cmd->txop = cpu_to_le16(txop); 3483 if (priv->ap_fw) { 3484 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); 3485 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); 3486 cmd->ap.aifs = aifs; 3487 cmd->ap.txq = qnum; 3488 } else { 3489 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); 3490 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); 3491 cmd->sta.aifs = aifs; 3492 cmd->sta.txq = qnum; 3493 } 3494 3495 rc = mwl8k_post_cmd(hw, &cmd->header); 3496 kfree(cmd); 3497 3498 return rc; 3499 } 3500 3501 /* 3502 * CMD_SET_WMM_MODE. 3503 */ 3504 struct mwl8k_cmd_set_wmm_mode { 3505 struct mwl8k_cmd_pkt header; 3506 __le16 action; 3507 } __packed; 3508 3509 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) 3510 { 3511 struct mwl8k_priv *priv = hw->priv; 3512 struct mwl8k_cmd_set_wmm_mode *cmd; 3513 int rc; 3514 3515 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3516 if (cmd == NULL) 3517 return -ENOMEM; 3518 3519 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); 3520 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3521 cmd->action = cpu_to_le16(!!enable); 3522 3523 rc = mwl8k_post_cmd(hw, &cmd->header); 3524 kfree(cmd); 3525 3526 if (!rc) 3527 priv->wmm_enabled = enable; 3528 3529 return rc; 3530 } 3531 3532 /* 3533 * CMD_MIMO_CONFIG. 3534 */ 3535 struct mwl8k_cmd_mimo_config { 3536 struct mwl8k_cmd_pkt header; 3537 __le32 action; 3538 __u8 rx_antenna_map; 3539 __u8 tx_antenna_map; 3540 } __packed; 3541 3542 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) 3543 { 3544 struct mwl8k_cmd_mimo_config *cmd; 3545 int rc; 3546 3547 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3548 if (cmd == NULL) 3549 return -ENOMEM; 3550 3551 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); 3552 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3553 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); 3554 cmd->rx_antenna_map = rx; 3555 cmd->tx_antenna_map = tx; 3556 3557 rc = mwl8k_post_cmd(hw, &cmd->header); 3558 kfree(cmd); 3559 3560 return rc; 3561 } 3562 3563 /* 3564 * CMD_USE_FIXED_RATE (STA version). 3565 */ 3566 struct mwl8k_cmd_use_fixed_rate_sta { 3567 struct mwl8k_cmd_pkt header; 3568 __le32 action; 3569 __le32 allow_rate_drop; 3570 __le32 num_rates; 3571 struct { 3572 __le32 is_ht_rate; 3573 __le32 enable_retry; 3574 __le32 rate; 3575 __le32 retry_count; 3576 } rate_entry[8]; 3577 __le32 rate_type; 3578 __le32 reserved1; 3579 __le32 reserved2; 3580 } __packed; 3581 3582 #define MWL8K_USE_AUTO_RATE 0x0002 3583 #define MWL8K_UCAST_RATE 0 3584 3585 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) 3586 { 3587 struct mwl8k_cmd_use_fixed_rate_sta *cmd; 3588 int rc; 3589 3590 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3591 if (cmd == NULL) 3592 return -ENOMEM; 3593 3594 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3595 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3596 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3597 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); 3598 3599 rc = mwl8k_post_cmd(hw, &cmd->header); 3600 kfree(cmd); 3601 3602 return rc; 3603 } 3604 3605 /* 3606 * CMD_USE_FIXED_RATE (AP version). 3607 */ 3608 struct mwl8k_cmd_use_fixed_rate_ap { 3609 struct mwl8k_cmd_pkt header; 3610 __le32 action; 3611 __le32 allow_rate_drop; 3612 __le32 num_rates; 3613 struct mwl8k_rate_entry_ap { 3614 __le32 is_ht_rate; 3615 __le32 enable_retry; 3616 __le32 rate; 3617 __le32 retry_count; 3618 } rate_entry[4]; 3619 u8 multicast_rate; 3620 u8 multicast_rate_type; 3621 u8 management_rate; 3622 } __packed; 3623 3624 static int 3625 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) 3626 { 3627 struct mwl8k_cmd_use_fixed_rate_ap *cmd; 3628 int rc; 3629 3630 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3631 if (cmd == NULL) 3632 return -ENOMEM; 3633 3634 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3635 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3636 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3637 cmd->multicast_rate = mcast; 3638 cmd->management_rate = mgmt; 3639 3640 rc = mwl8k_post_cmd(hw, &cmd->header); 3641 kfree(cmd); 3642 3643 return rc; 3644 } 3645 3646 /* 3647 * CMD_ENABLE_SNIFFER. 3648 */ 3649 struct mwl8k_cmd_enable_sniffer { 3650 struct mwl8k_cmd_pkt header; 3651 __le32 action; 3652 } __packed; 3653 3654 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) 3655 { 3656 struct mwl8k_cmd_enable_sniffer *cmd; 3657 int rc; 3658 3659 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3660 if (cmd == NULL) 3661 return -ENOMEM; 3662 3663 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); 3664 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3665 cmd->action = cpu_to_le32(!!enable); 3666 3667 rc = mwl8k_post_cmd(hw, &cmd->header); 3668 kfree(cmd); 3669 3670 return rc; 3671 } 3672 3673 struct mwl8k_cmd_update_mac_addr { 3674 struct mwl8k_cmd_pkt header; 3675 union { 3676 struct { 3677 __le16 mac_type; 3678 __u8 mac_addr[ETH_ALEN]; 3679 } mbss; 3680 __u8 mac_addr[ETH_ALEN]; 3681 }; 3682 } __packed; 3683 3684 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 3685 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 3686 #define MWL8K_MAC_TYPE_PRIMARY_AP 2 3687 #define MWL8K_MAC_TYPE_SECONDARY_AP 3 3688 3689 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, 3690 struct ieee80211_vif *vif, u8 *mac, bool set) 3691 { 3692 struct mwl8k_priv *priv = hw->priv; 3693 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3694 struct mwl8k_cmd_update_mac_addr *cmd; 3695 int mac_type; 3696 int rc; 3697 3698 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3699 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { 3700 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) 3701 if (priv->ap_fw) 3702 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3703 else 3704 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; 3705 else 3706 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3707 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { 3708 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) 3709 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3710 else 3711 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; 3712 } 3713 3714 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3715 if (cmd == NULL) 3716 return -ENOMEM; 3717 3718 if (set) 3719 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); 3720 else 3721 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); 3722 3723 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3724 if (priv->ap_fw) { 3725 cmd->mbss.mac_type = cpu_to_le16(mac_type); 3726 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); 3727 } else { 3728 memcpy(cmd->mac_addr, mac, ETH_ALEN); 3729 } 3730 3731 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3732 kfree(cmd); 3733 3734 return rc; 3735 } 3736 3737 /* 3738 * MWL8K_CMD_SET_MAC_ADDR. 3739 */ 3740 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, 3741 struct ieee80211_vif *vif, u8 *mac) 3742 { 3743 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); 3744 } 3745 3746 /* 3747 * MWL8K_CMD_DEL_MAC_ADDR. 3748 */ 3749 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, 3750 struct ieee80211_vif *vif, u8 *mac) 3751 { 3752 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); 3753 } 3754 3755 /* 3756 * CMD_SET_RATEADAPT_MODE. 3757 */ 3758 struct mwl8k_cmd_set_rate_adapt_mode { 3759 struct mwl8k_cmd_pkt header; 3760 __le16 action; 3761 __le16 mode; 3762 } __packed; 3763 3764 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) 3765 { 3766 struct mwl8k_cmd_set_rate_adapt_mode *cmd; 3767 int rc; 3768 3769 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3770 if (cmd == NULL) 3771 return -ENOMEM; 3772 3773 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); 3774 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3775 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3776 cmd->mode = cpu_to_le16(mode); 3777 3778 rc = mwl8k_post_cmd(hw, &cmd->header); 3779 kfree(cmd); 3780 3781 return rc; 3782 } 3783 3784 /* 3785 * CMD_GET_WATCHDOG_BITMAP. 3786 */ 3787 struct mwl8k_cmd_get_watchdog_bitmap { 3788 struct mwl8k_cmd_pkt header; 3789 u8 bitmap; 3790 } __packed; 3791 3792 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) 3793 { 3794 struct mwl8k_cmd_get_watchdog_bitmap *cmd; 3795 int rc; 3796 3797 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3798 if (cmd == NULL) 3799 return -ENOMEM; 3800 3801 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); 3802 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3803 3804 rc = mwl8k_post_cmd(hw, &cmd->header); 3805 if (!rc) 3806 *bitmap = cmd->bitmap; 3807 3808 kfree(cmd); 3809 3810 return rc; 3811 } 3812 3813 #define MWL8K_WMM_QUEUE_NUMBER 3 3814 3815 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 3816 u8 idx); 3817 3818 static void mwl8k_watchdog_ba_events(struct work_struct *work) 3819 { 3820 int rc; 3821 u8 bitmap = 0, stream_index; 3822 struct mwl8k_ampdu_stream *streams; 3823 struct mwl8k_priv *priv = 3824 container_of(work, struct mwl8k_priv, watchdog_ba_handle); 3825 struct ieee80211_hw *hw = priv->hw; 3826 int i; 3827 u32 status = 0; 3828 3829 mwl8k_fw_lock(hw); 3830 3831 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); 3832 if (rc) 3833 goto done; 3834 3835 spin_lock(&priv->stream_lock); 3836 3837 /* the bitmap is the hw queue number. Map it to the ampdu queue. */ 3838 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { 3839 if (bitmap & (1 << i)) { 3840 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % 3841 TOTAL_HW_TX_QUEUES; 3842 streams = &priv->ampdu[stream_index]; 3843 if (streams->state == AMPDU_STREAM_ACTIVE) { 3844 ieee80211_stop_tx_ba_session(streams->sta, 3845 streams->tid); 3846 spin_unlock(&priv->stream_lock); 3847 mwl8k_destroy_ba(hw, stream_index); 3848 spin_lock(&priv->stream_lock); 3849 } 3850 } 3851 } 3852 3853 spin_unlock(&priv->stream_lock); 3854 done: 3855 atomic_dec(&priv->watchdog_event_pending); 3856 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3857 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), 3858 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3859 mwl8k_fw_unlock(hw); 3860 return; 3861 } 3862 3863 3864 /* 3865 * CMD_BSS_START. 3866 */ 3867 struct mwl8k_cmd_bss_start { 3868 struct mwl8k_cmd_pkt header; 3869 __le32 enable; 3870 } __packed; 3871 3872 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 3873 struct ieee80211_vif *vif, int enable) 3874 { 3875 struct mwl8k_cmd_bss_start *cmd; 3876 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3877 struct mwl8k_priv *priv = hw->priv; 3878 int rc; 3879 3880 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) 3881 return 0; 3882 3883 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) 3884 return 0; 3885 3886 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3887 if (cmd == NULL) 3888 return -ENOMEM; 3889 3890 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); 3891 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3892 cmd->enable = cpu_to_le32(enable); 3893 3894 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3895 kfree(cmd); 3896 3897 if (!rc) { 3898 if (enable) 3899 priv->running_bsses |= (1 << mwl8k_vif->macid); 3900 else 3901 priv->running_bsses &= ~(1 << mwl8k_vif->macid); 3902 } 3903 return rc; 3904 } 3905 3906 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) 3907 { 3908 struct mwl8k_priv *priv = hw->priv; 3909 struct mwl8k_vif *mwl8k_vif, *tmp_vif; 3910 struct ieee80211_vif *vif; 3911 3912 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { 3913 vif = mwl8k_vif->vif; 3914 3915 if (!(bitmap & (1 << mwl8k_vif->macid))) 3916 continue; 3917 3918 if (vif->type == NL80211_IFTYPE_AP) 3919 mwl8k_cmd_bss_start(hw, vif, enable); 3920 } 3921 } 3922 /* 3923 * CMD_BASTREAM. 3924 */ 3925 3926 /* 3927 * UPSTREAM is tx direction 3928 */ 3929 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 3930 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 3931 3932 enum ba_stream_action_type { 3933 MWL8K_BA_CREATE, 3934 MWL8K_BA_UPDATE, 3935 MWL8K_BA_DESTROY, 3936 MWL8K_BA_FLUSH, 3937 MWL8K_BA_CHECK, 3938 }; 3939 3940 3941 struct mwl8k_create_ba_stream { 3942 __le32 flags; 3943 __le32 idle_thrs; 3944 __le32 bar_thrs; 3945 __le32 window_size; 3946 u8 peer_mac_addr[6]; 3947 u8 dialog_token; 3948 u8 tid; 3949 u8 queue_id; 3950 u8 param_info; 3951 __le32 ba_context; 3952 u8 reset_seq_no_flag; 3953 __le16 curr_seq_no; 3954 u8 sta_src_mac_addr[6]; 3955 } __packed; 3956 3957 struct mwl8k_destroy_ba_stream { 3958 __le32 flags; 3959 __le32 ba_context; 3960 } __packed; 3961 3962 struct mwl8k_cmd_bastream { 3963 struct mwl8k_cmd_pkt header; 3964 __le32 action; 3965 union { 3966 struct mwl8k_create_ba_stream create_params; 3967 struct mwl8k_destroy_ba_stream destroy_params; 3968 }; 3969 } __packed; 3970 3971 static int 3972 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 3973 struct ieee80211_vif *vif) 3974 { 3975 struct mwl8k_cmd_bastream *cmd; 3976 int rc; 3977 3978 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3979 if (cmd == NULL) 3980 return -ENOMEM; 3981 3982 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 3983 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3984 3985 cmd->action = cpu_to_le32(MWL8K_BA_CHECK); 3986 3987 cmd->create_params.queue_id = stream->idx; 3988 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, 3989 ETH_ALEN); 3990 cmd->create_params.tid = stream->tid; 3991 3992 cmd->create_params.flags = 3993 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | 3994 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); 3995 3996 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3997 3998 kfree(cmd); 3999 4000 return rc; 4001 } 4002 4003 static int 4004 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 4005 u8 buf_size, struct ieee80211_vif *vif) 4006 { 4007 struct mwl8k_cmd_bastream *cmd; 4008 int rc; 4009 4010 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4011 if (cmd == NULL) 4012 return -ENOMEM; 4013 4014 4015 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4016 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4017 4018 cmd->action = cpu_to_le32(MWL8K_BA_CREATE); 4019 4020 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); 4021 cmd->create_params.window_size = cpu_to_le32((u32)buf_size); 4022 cmd->create_params.queue_id = stream->idx; 4023 4024 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); 4025 cmd->create_params.tid = stream->tid; 4026 cmd->create_params.curr_seq_no = cpu_to_le16(0); 4027 cmd->create_params.reset_seq_no_flag = 1; 4028 4029 cmd->create_params.param_info = 4030 (stream->sta->ht_cap.ampdu_factor & 4031 IEEE80211_HT_AMPDU_PARM_FACTOR) | 4032 ((stream->sta->ht_cap.ampdu_density << 2) & 4033 IEEE80211_HT_AMPDU_PARM_DENSITY); 4034 4035 cmd->create_params.flags = 4036 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | 4037 BASTREAM_FLAG_DIRECTION_UPSTREAM); 4038 4039 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4040 4041 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", 4042 stream->sta->addr, stream->tid); 4043 kfree(cmd); 4044 4045 return rc; 4046 } 4047 4048 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 4049 u8 idx) 4050 { 4051 struct mwl8k_cmd_bastream *cmd; 4052 4053 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4054 if (cmd == NULL) 4055 return; 4056 4057 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4058 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4059 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); 4060 4061 cmd->destroy_params.ba_context = cpu_to_le32(idx); 4062 mwl8k_post_cmd(hw, &cmd->header); 4063 4064 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); 4065 4066 kfree(cmd); 4067 } 4068 4069 /* 4070 * CMD_SET_NEW_STN. 4071 */ 4072 struct mwl8k_cmd_set_new_stn { 4073 struct mwl8k_cmd_pkt header; 4074 __le16 aid; 4075 __u8 mac_addr[6]; 4076 __le16 stn_id; 4077 __le16 action; 4078 __le16 rsvd; 4079 __le32 legacy_rates; 4080 __u8 ht_rates[4]; 4081 __le16 cap_info; 4082 __le16 ht_capabilities_info; 4083 __u8 mac_ht_param_info; 4084 __u8 rev; 4085 __u8 control_channel; 4086 __u8 add_channel; 4087 __le16 op_mode; 4088 __le16 stbc; 4089 __u8 add_qos_info; 4090 __u8 is_qos_sta; 4091 __le32 fw_sta_ptr; 4092 } __packed; 4093 4094 #define MWL8K_STA_ACTION_ADD 0 4095 #define MWL8K_STA_ACTION_REMOVE 2 4096 4097 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, 4098 struct ieee80211_vif *vif, 4099 struct ieee80211_sta *sta) 4100 { 4101 struct mwl8k_cmd_set_new_stn *cmd; 4102 u32 rates; 4103 int rc; 4104 4105 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4106 if (cmd == NULL) 4107 return -ENOMEM; 4108 4109 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4110 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4111 cmd->aid = cpu_to_le16(sta->aid); 4112 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); 4113 cmd->stn_id = cpu_to_le16(sta->aid); 4114 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); 4115 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4116 rates = sta->supp_rates[NL80211_BAND_2GHZ]; 4117 else 4118 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; 4119 cmd->legacy_rates = cpu_to_le32(rates); 4120 if (sta->ht_cap.ht_supported) { 4121 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0]; 4122 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1]; 4123 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2]; 4124 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3]; 4125 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap); 4126 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) | 4127 ((sta->ht_cap.ampdu_density & 7) << 2); 4128 cmd->is_qos_sta = 1; 4129 } 4130 4131 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4132 kfree(cmd); 4133 4134 return rc; 4135 } 4136 4137 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, 4138 struct ieee80211_vif *vif) 4139 { 4140 struct mwl8k_cmd_set_new_stn *cmd; 4141 int rc; 4142 4143 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4144 if (cmd == NULL) 4145 return -ENOMEM; 4146 4147 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4148 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4149 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); 4150 4151 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4152 kfree(cmd); 4153 4154 return rc; 4155 } 4156 4157 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, 4158 struct ieee80211_vif *vif, u8 *addr) 4159 { 4160 struct mwl8k_cmd_set_new_stn *cmd; 4161 struct mwl8k_priv *priv = hw->priv; 4162 int rc, i; 4163 u8 idx; 4164 4165 spin_lock(&priv->stream_lock); 4166 /* Destroy any active ampdu streams for this sta */ 4167 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 4168 struct mwl8k_ampdu_stream *s; 4169 s = &priv->ampdu[i]; 4170 if (s->state != AMPDU_NO_STREAM) { 4171 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { 4172 if (s->state == AMPDU_STREAM_ACTIVE) { 4173 idx = s->idx; 4174 spin_unlock(&priv->stream_lock); 4175 mwl8k_destroy_ba(hw, idx); 4176 spin_lock(&priv->stream_lock); 4177 } else if (s->state == AMPDU_STREAM_NEW) { 4178 mwl8k_remove_stream(hw, s); 4179 } 4180 } 4181 } 4182 } 4183 4184 spin_unlock(&priv->stream_lock); 4185 4186 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4187 if (cmd == NULL) 4188 return -ENOMEM; 4189 4190 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4191 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4192 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4193 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); 4194 4195 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4196 kfree(cmd); 4197 4198 return rc; 4199 } 4200 4201 /* 4202 * CMD_UPDATE_ENCRYPTION. 4203 */ 4204 4205 #define MAX_ENCR_KEY_LENGTH 16 4206 #define MIC_KEY_LENGTH 8 4207 4208 struct mwl8k_cmd_update_encryption { 4209 struct mwl8k_cmd_pkt header; 4210 4211 __le32 action; 4212 __le32 reserved; 4213 __u8 mac_addr[6]; 4214 __u8 encr_type; 4215 4216 } __packed; 4217 4218 struct mwl8k_cmd_set_key { 4219 struct mwl8k_cmd_pkt header; 4220 4221 __le32 action; 4222 __le32 reserved; 4223 __le16 length; 4224 __le16 key_type_id; 4225 __le32 key_info; 4226 __le32 key_id; 4227 __le16 key_len; 4228 __u8 key_material[MAX_ENCR_KEY_LENGTH]; 4229 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; 4230 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; 4231 __le16 tkip_rsc_low; 4232 __le32 tkip_rsc_high; 4233 __le16 tkip_tsc_low; 4234 __le32 tkip_tsc_high; 4235 __u8 mac_addr[6]; 4236 } __packed; 4237 4238 enum { 4239 MWL8K_ENCR_ENABLE, 4240 MWL8K_ENCR_SET_KEY, 4241 MWL8K_ENCR_REMOVE_KEY, 4242 MWL8K_ENCR_SET_GROUP_KEY, 4243 }; 4244 4245 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 4246 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 4247 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 4248 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 4249 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 4250 4251 enum { 4252 MWL8K_ALG_WEP, 4253 MWL8K_ALG_TKIP, 4254 MWL8K_ALG_CCMP, 4255 }; 4256 4257 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 4258 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 4259 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 4260 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 4261 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 4262 4263 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, 4264 struct ieee80211_vif *vif, 4265 u8 *addr, 4266 u8 encr_type) 4267 { 4268 struct mwl8k_cmd_update_encryption *cmd; 4269 int rc; 4270 4271 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4272 if (cmd == NULL) 4273 return -ENOMEM; 4274 4275 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4276 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4277 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); 4278 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4279 cmd->encr_type = encr_type; 4280 4281 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4282 kfree(cmd); 4283 4284 return rc; 4285 } 4286 4287 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, 4288 u8 *addr, 4289 struct ieee80211_key_conf *key) 4290 { 4291 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4292 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4293 cmd->length = cpu_to_le16(sizeof(*cmd) - 4294 offsetof(struct mwl8k_cmd_set_key, length)); 4295 cmd->key_id = cpu_to_le32(key->keyidx); 4296 cmd->key_len = cpu_to_le16(key->keylen); 4297 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4298 4299 switch (key->cipher) { 4300 case WLAN_CIPHER_SUITE_WEP40: 4301 case WLAN_CIPHER_SUITE_WEP104: 4302 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); 4303 if (key->keyidx == 0) 4304 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); 4305 4306 break; 4307 case WLAN_CIPHER_SUITE_TKIP: 4308 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); 4309 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4310 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4311 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4312 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID 4313 | MWL8K_KEY_FLAG_TSC_VALID); 4314 break; 4315 case WLAN_CIPHER_SUITE_CCMP: 4316 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); 4317 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4318 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4319 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4320 break; 4321 default: 4322 return -ENOTSUPP; 4323 } 4324 4325 return 0; 4326 } 4327 4328 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, 4329 struct ieee80211_vif *vif, 4330 u8 *addr, 4331 struct ieee80211_key_conf *key) 4332 { 4333 struct mwl8k_cmd_set_key *cmd; 4334 int rc; 4335 int keymlen; 4336 u32 action; 4337 u8 idx; 4338 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4339 4340 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4341 if (cmd == NULL) 4342 return -ENOMEM; 4343 4344 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4345 if (rc < 0) 4346 goto done; 4347 4348 idx = key->keyidx; 4349 4350 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4351 action = MWL8K_ENCR_SET_KEY; 4352 else 4353 action = MWL8K_ENCR_SET_GROUP_KEY; 4354 4355 switch (key->cipher) { 4356 case WLAN_CIPHER_SUITE_WEP40: 4357 case WLAN_CIPHER_SUITE_WEP104: 4358 if (!mwl8k_vif->wep_key_conf[idx].enabled) { 4359 memcpy(mwl8k_vif->wep_key_conf[idx].key, key, 4360 sizeof(*key) + key->keylen); 4361 mwl8k_vif->wep_key_conf[idx].enabled = 1; 4362 } 4363 4364 keymlen = key->keylen; 4365 action = MWL8K_ENCR_SET_KEY; 4366 break; 4367 case WLAN_CIPHER_SUITE_TKIP: 4368 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; 4369 break; 4370 case WLAN_CIPHER_SUITE_CCMP: 4371 keymlen = key->keylen; 4372 break; 4373 default: 4374 rc = -ENOTSUPP; 4375 goto done; 4376 } 4377 4378 memcpy(cmd->key_material, key->key, keymlen); 4379 cmd->action = cpu_to_le32(action); 4380 4381 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4382 done: 4383 kfree(cmd); 4384 4385 return rc; 4386 } 4387 4388 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, 4389 struct ieee80211_vif *vif, 4390 u8 *addr, 4391 struct ieee80211_key_conf *key) 4392 { 4393 struct mwl8k_cmd_set_key *cmd; 4394 int rc; 4395 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4396 4397 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4398 if (cmd == NULL) 4399 return -ENOMEM; 4400 4401 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4402 if (rc < 0) 4403 goto done; 4404 4405 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || 4406 key->cipher == WLAN_CIPHER_SUITE_WEP104) 4407 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; 4408 4409 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); 4410 4411 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4412 done: 4413 kfree(cmd); 4414 4415 return rc; 4416 } 4417 4418 static int mwl8k_set_key(struct ieee80211_hw *hw, 4419 enum set_key_cmd cmd_param, 4420 struct ieee80211_vif *vif, 4421 struct ieee80211_sta *sta, 4422 struct ieee80211_key_conf *key) 4423 { 4424 int rc = 0; 4425 u8 encr_type; 4426 u8 *addr; 4427 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4428 struct mwl8k_priv *priv = hw->priv; 4429 4430 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) 4431 return -EOPNOTSUPP; 4432 4433 if (sta == NULL) 4434 addr = vif->addr; 4435 else 4436 addr = sta->addr; 4437 4438 if (cmd_param == SET_KEY) { 4439 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); 4440 if (rc) 4441 goto out; 4442 4443 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) 4444 || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) 4445 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; 4446 else 4447 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; 4448 4449 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, 4450 encr_type); 4451 if (rc) 4452 goto out; 4453 4454 mwl8k_vif->is_hw_crypto_enabled = true; 4455 4456 } else { 4457 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); 4458 4459 if (rc) 4460 goto out; 4461 } 4462 out: 4463 return rc; 4464 } 4465 4466 /* 4467 * CMD_UPDATE_STADB. 4468 */ 4469 struct ewc_ht_info { 4470 __le16 control1; 4471 __le16 control2; 4472 __le16 control3; 4473 } __packed; 4474 4475 struct peer_capability_info { 4476 /* Peer type - AP vs. STA. */ 4477 __u8 peer_type; 4478 4479 /* Basic 802.11 capabilities from assoc resp. */ 4480 __le16 basic_caps; 4481 4482 /* Set if peer supports 802.11n high throughput (HT). */ 4483 __u8 ht_support; 4484 4485 /* Valid if HT is supported. */ 4486 __le16 ht_caps; 4487 __u8 extended_ht_caps; 4488 struct ewc_ht_info ewc_info; 4489 4490 /* Legacy rate table. Intersection of our rates and peer rates. */ 4491 __u8 legacy_rates[12]; 4492 4493 /* HT rate table. Intersection of our rates and peer rates. */ 4494 __u8 ht_rates[16]; 4495 __u8 pad[16]; 4496 4497 /* If set, interoperability mode, no proprietary extensions. */ 4498 __u8 interop; 4499 __u8 pad2; 4500 __u8 station_id; 4501 __le16 amsdu_enabled; 4502 } __packed; 4503 4504 struct mwl8k_cmd_update_stadb { 4505 struct mwl8k_cmd_pkt header; 4506 4507 /* See STADB_ACTION_TYPE */ 4508 __le32 action; 4509 4510 /* Peer MAC address */ 4511 __u8 peer_addr[ETH_ALEN]; 4512 4513 __le32 reserved; 4514 4515 /* Peer info - valid during add/update. */ 4516 struct peer_capability_info peer_info; 4517 } __packed; 4518 4519 #define MWL8K_STA_DB_MODIFY_ENTRY 1 4520 #define MWL8K_STA_DB_DEL_ENTRY 2 4521 4522 /* Peer Entry flags - used to define the type of the peer node */ 4523 #define MWL8K_PEER_TYPE_ACCESSPOINT 2 4524 4525 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, 4526 struct ieee80211_vif *vif, 4527 struct ieee80211_sta *sta) 4528 { 4529 struct mwl8k_cmd_update_stadb *cmd; 4530 struct peer_capability_info *p; 4531 u32 rates; 4532 int rc; 4533 4534 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4535 if (cmd == NULL) 4536 return -ENOMEM; 4537 4538 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4539 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4540 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); 4541 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); 4542 4543 p = &cmd->peer_info; 4544 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; 4545 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); 4546 p->ht_support = sta->ht_cap.ht_supported; 4547 p->ht_caps = cpu_to_le16(sta->ht_cap.cap); 4548 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) | 4549 ((sta->ht_cap.ampdu_density & 7) << 2); 4550 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4551 rates = sta->supp_rates[NL80211_BAND_2GHZ]; 4552 else 4553 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5; 4554 legacy_rate_mask_to_array(p->legacy_rates, rates); 4555 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16); 4556 p->interop = 1; 4557 p->amsdu_enabled = 0; 4558 4559 rc = mwl8k_post_cmd(hw, &cmd->header); 4560 if (!rc) 4561 rc = p->station_id; 4562 kfree(cmd); 4563 4564 return rc; 4565 } 4566 4567 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, 4568 struct ieee80211_vif *vif, u8 *addr) 4569 { 4570 struct mwl8k_cmd_update_stadb *cmd; 4571 int rc; 4572 4573 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4574 if (cmd == NULL) 4575 return -ENOMEM; 4576 4577 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4578 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4579 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); 4580 memcpy(cmd->peer_addr, addr, ETH_ALEN); 4581 4582 rc = mwl8k_post_cmd(hw, &cmd->header); 4583 kfree(cmd); 4584 4585 return rc; 4586 } 4587 4588 4589 /* 4590 * Interrupt handling. 4591 */ 4592 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) 4593 { 4594 struct ieee80211_hw *hw = dev_id; 4595 struct mwl8k_priv *priv = hw->priv; 4596 u32 status; 4597 4598 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4599 if (!status) 4600 return IRQ_NONE; 4601 4602 if (status & MWL8K_A2H_INT_TX_DONE) { 4603 status &= ~MWL8K_A2H_INT_TX_DONE; 4604 tasklet_schedule(&priv->poll_tx_task); 4605 } 4606 4607 if (status & MWL8K_A2H_INT_RX_READY) { 4608 status &= ~MWL8K_A2H_INT_RX_READY; 4609 tasklet_schedule(&priv->poll_rx_task); 4610 } 4611 4612 if (status & MWL8K_A2H_INT_BA_WATCHDOG) { 4613 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, 4614 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4615 4616 atomic_inc(&priv->watchdog_event_pending); 4617 status &= ~MWL8K_A2H_INT_BA_WATCHDOG; 4618 ieee80211_queue_work(hw, &priv->watchdog_ba_handle); 4619 } 4620 4621 if (status) 4622 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4623 4624 if (status & MWL8K_A2H_INT_OPC_DONE) { 4625 if (priv->hostcmd_wait != NULL) 4626 complete(priv->hostcmd_wait); 4627 } 4628 4629 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { 4630 if (!mutex_is_locked(&priv->fw_mutex) && 4631 priv->radio_on && priv->pending_tx_pkts) 4632 mwl8k_tx_start(priv); 4633 } 4634 4635 return IRQ_HANDLED; 4636 } 4637 4638 static void mwl8k_tx_poll(struct tasklet_struct *t) 4639 { 4640 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task); 4641 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4642 int limit; 4643 int i; 4644 4645 limit = 32; 4646 4647 spin_lock(&priv->tx_lock); 4648 4649 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4650 limit -= mwl8k_txq_reclaim(hw, i, limit, 0); 4651 4652 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { 4653 complete(priv->tx_wait); 4654 priv->tx_wait = NULL; 4655 } 4656 4657 spin_unlock(&priv->tx_lock); 4658 4659 if (limit) { 4660 writel(~MWL8K_A2H_INT_TX_DONE, 4661 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4662 } else { 4663 tasklet_schedule(&priv->poll_tx_task); 4664 } 4665 } 4666 4667 static void mwl8k_rx_poll(struct tasklet_struct *t) 4668 { 4669 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task); 4670 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4671 int limit; 4672 4673 limit = 32; 4674 limit -= rxq_process(hw, 0, limit); 4675 limit -= rxq_refill(hw, 0, limit); 4676 4677 if (limit) { 4678 writel(~MWL8K_A2H_INT_RX_READY, 4679 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4680 } else { 4681 tasklet_schedule(&priv->poll_rx_task); 4682 } 4683 } 4684 4685 4686 /* 4687 * Core driver operations. 4688 */ 4689 static void mwl8k_tx(struct ieee80211_hw *hw, 4690 struct ieee80211_tx_control *control, 4691 struct sk_buff *skb) 4692 { 4693 struct mwl8k_priv *priv = hw->priv; 4694 int index = skb_get_queue_mapping(skb); 4695 4696 if (!priv->radio_on) { 4697 wiphy_debug(hw->wiphy, 4698 "dropped TX frame since radio disabled\n"); 4699 dev_kfree_skb(skb); 4700 return; 4701 } 4702 4703 mwl8k_txq_xmit(hw, index, control->sta, skb); 4704 } 4705 4706 static int mwl8k_start(struct ieee80211_hw *hw) 4707 { 4708 struct mwl8k_priv *priv = hw->priv; 4709 int rc; 4710 4711 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 4712 IRQF_SHARED, MWL8K_NAME, hw); 4713 if (rc) { 4714 priv->irq = -1; 4715 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 4716 return -EIO; 4717 } 4718 priv->irq = priv->pdev->irq; 4719 4720 /* Enable TX reclaim and RX tasklets. */ 4721 tasklet_enable(&priv->poll_tx_task); 4722 tasklet_enable(&priv->poll_rx_task); 4723 4724 /* Enable interrupts */ 4725 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4726 iowrite32(MWL8K_A2H_EVENTS, 4727 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4728 4729 rc = mwl8k_fw_lock(hw); 4730 if (!rc) { 4731 rc = mwl8k_cmd_radio_enable(hw); 4732 4733 if (!priv->ap_fw) { 4734 if (!rc) 4735 rc = mwl8k_cmd_enable_sniffer(hw, 0); 4736 4737 if (!rc) 4738 rc = mwl8k_cmd_set_pre_scan(hw); 4739 4740 if (!rc) 4741 rc = mwl8k_cmd_set_post_scan(hw, 4742 "\x00\x00\x00\x00\x00\x00"); 4743 } 4744 4745 if (!rc) 4746 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); 4747 4748 if (!rc) 4749 rc = mwl8k_cmd_set_wmm_mode(hw, 0); 4750 4751 mwl8k_fw_unlock(hw); 4752 } 4753 4754 if (rc) { 4755 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4756 free_irq(priv->pdev->irq, hw); 4757 priv->irq = -1; 4758 tasklet_disable(&priv->poll_tx_task); 4759 tasklet_disable(&priv->poll_rx_task); 4760 } else { 4761 ieee80211_wake_queues(hw); 4762 } 4763 4764 return rc; 4765 } 4766 4767 static void mwl8k_stop(struct ieee80211_hw *hw) 4768 { 4769 struct mwl8k_priv *priv = hw->priv; 4770 int i; 4771 4772 if (!priv->hw_restart_in_progress) 4773 mwl8k_cmd_radio_disable(hw); 4774 4775 ieee80211_stop_queues(hw); 4776 4777 /* Disable interrupts */ 4778 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4779 if (priv->irq != -1) { 4780 free_irq(priv->pdev->irq, hw); 4781 priv->irq = -1; 4782 } 4783 4784 /* Stop finalize join worker */ 4785 cancel_work_sync(&priv->finalize_join_worker); 4786 cancel_work_sync(&priv->watchdog_ba_handle); 4787 if (priv->beacon_skb != NULL) 4788 dev_kfree_skb(priv->beacon_skb); 4789 4790 /* Stop TX reclaim and RX tasklets. */ 4791 tasklet_disable(&priv->poll_tx_task); 4792 tasklet_disable(&priv->poll_rx_task); 4793 4794 /* Return all skbs to mac80211 */ 4795 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4796 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 4797 } 4798 4799 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); 4800 4801 static int mwl8k_add_interface(struct ieee80211_hw *hw, 4802 struct ieee80211_vif *vif) 4803 { 4804 struct mwl8k_priv *priv = hw->priv; 4805 struct mwl8k_vif *mwl8k_vif; 4806 u32 macids_supported; 4807 int macid, rc; 4808 struct mwl8k_device_info *di; 4809 4810 /* 4811 * Reject interface creation if sniffer mode is active, as 4812 * STA operation is mutually exclusive with hardware sniffer 4813 * mode. (Sniffer mode is only used on STA firmware.) 4814 */ 4815 if (priv->sniffer_enabled) { 4816 wiphy_info(hw->wiphy, 4817 "unable to create STA interface because sniffer mode is enabled\n"); 4818 return -EINVAL; 4819 } 4820 4821 di = priv->device_info; 4822 switch (vif->type) { 4823 case NL80211_IFTYPE_AP: 4824 if (!priv->ap_fw && di->fw_image_ap) { 4825 /* we must load the ap fw to meet this request */ 4826 if (!list_empty(&priv->vif_list)) 4827 return -EBUSY; 4828 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4829 if (rc) 4830 return rc; 4831 } 4832 macids_supported = priv->ap_macids_supported; 4833 break; 4834 case NL80211_IFTYPE_STATION: 4835 if (priv->ap_fw && di->fw_image_sta) { 4836 if (!list_empty(&priv->vif_list)) { 4837 wiphy_warn(hw->wiphy, "AP interface is running.\n" 4838 "Adding STA interface for WDS"); 4839 } else { 4840 /* we must load the sta fw to 4841 * meet this request. 4842 */ 4843 rc = mwl8k_reload_firmware(hw, 4844 di->fw_image_sta); 4845 if (rc) 4846 return rc; 4847 } 4848 } 4849 macids_supported = priv->sta_macids_supported; 4850 break; 4851 default: 4852 return -EINVAL; 4853 } 4854 4855 macid = ffs(macids_supported & ~priv->macids_used); 4856 if (!macid--) 4857 return -EBUSY; 4858 4859 /* Setup driver private area. */ 4860 mwl8k_vif = MWL8K_VIF(vif); 4861 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); 4862 mwl8k_vif->vif = vif; 4863 mwl8k_vif->macid = macid; 4864 mwl8k_vif->seqno = 0; 4865 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); 4866 mwl8k_vif->is_hw_crypto_enabled = false; 4867 4868 /* Set the mac address. */ 4869 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); 4870 4871 if (vif->type == NL80211_IFTYPE_AP) 4872 mwl8k_cmd_set_new_stn_add_self(hw, vif); 4873 4874 priv->macids_used |= 1 << mwl8k_vif->macid; 4875 list_add_tail(&mwl8k_vif->list, &priv->vif_list); 4876 4877 return 0; 4878 } 4879 4880 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) 4881 { 4882 /* Has ieee80211_restart_hw re-added the removed interfaces? */ 4883 if (!priv->macids_used) 4884 return; 4885 4886 priv->macids_used &= ~(1 << vif->macid); 4887 list_del(&vif->list); 4888 } 4889 4890 static void mwl8k_remove_interface(struct ieee80211_hw *hw, 4891 struct ieee80211_vif *vif) 4892 { 4893 struct mwl8k_priv *priv = hw->priv; 4894 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4895 4896 if (vif->type == NL80211_IFTYPE_AP) 4897 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); 4898 4899 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); 4900 4901 mwl8k_remove_vif(priv, mwl8k_vif); 4902 } 4903 4904 static void mwl8k_hw_restart_work(struct work_struct *work) 4905 { 4906 struct mwl8k_priv *priv = 4907 container_of(work, struct mwl8k_priv, fw_reload); 4908 struct ieee80211_hw *hw = priv->hw; 4909 struct mwl8k_device_info *di; 4910 int rc; 4911 4912 /* If some command is waiting for a response, clear it */ 4913 if (priv->hostcmd_wait != NULL) { 4914 complete(priv->hostcmd_wait); 4915 priv->hostcmd_wait = NULL; 4916 } 4917 4918 priv->hw_restart_owner = current; 4919 di = priv->device_info; 4920 mwl8k_fw_lock(hw); 4921 4922 if (priv->ap_fw) 4923 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4924 else 4925 rc = mwl8k_reload_firmware(hw, di->fw_image_sta); 4926 4927 if (rc) 4928 goto fail; 4929 4930 priv->hw_restart_owner = NULL; 4931 priv->hw_restart_in_progress = false; 4932 4933 /* 4934 * This unlock will wake up the queues and 4935 * also opens the command path for other 4936 * commands 4937 */ 4938 mwl8k_fw_unlock(hw); 4939 4940 ieee80211_restart_hw(hw); 4941 4942 wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); 4943 4944 return; 4945 fail: 4946 mwl8k_fw_unlock(hw); 4947 4948 wiphy_err(hw->wiphy, "Firmware restart failed\n"); 4949 } 4950 4951 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) 4952 { 4953 struct ieee80211_conf *conf = &hw->conf; 4954 struct mwl8k_priv *priv = hw->priv; 4955 int rc; 4956 4957 rc = mwl8k_fw_lock(hw); 4958 if (rc) 4959 return rc; 4960 4961 if (conf->flags & IEEE80211_CONF_IDLE) 4962 rc = mwl8k_cmd_radio_disable(hw); 4963 else 4964 rc = mwl8k_cmd_radio_enable(hw); 4965 if (rc) 4966 goto out; 4967 4968 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 4969 rc = mwl8k_cmd_set_rf_channel(hw, conf); 4970 if (rc) 4971 goto out; 4972 } 4973 4974 if (conf->power_level > 18) 4975 conf->power_level = 18; 4976 4977 if (priv->ap_fw) { 4978 4979 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { 4980 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); 4981 if (rc) 4982 goto out; 4983 } 4984 4985 4986 } else { 4987 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); 4988 if (rc) 4989 goto out; 4990 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); 4991 } 4992 4993 out: 4994 mwl8k_fw_unlock(hw); 4995 4996 return rc; 4997 } 4998 4999 static void 5000 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5001 struct ieee80211_bss_conf *info, u32 changed) 5002 { 5003 struct mwl8k_priv *priv = hw->priv; 5004 u32 ap_legacy_rates = 0; 5005 u8 ap_mcs_rates[16]; 5006 int rc; 5007 5008 if (mwl8k_fw_lock(hw)) 5009 return; 5010 5011 /* 5012 * No need to capture a beacon if we're no longer associated. 5013 */ 5014 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc) 5015 priv->capture_beacon = false; 5016 5017 /* 5018 * Get the AP's legacy and MCS rates. 5019 */ 5020 if (vif->bss_conf.assoc) { 5021 struct ieee80211_sta *ap; 5022 5023 rcu_read_lock(); 5024 5025 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); 5026 if (ap == NULL) { 5027 rcu_read_unlock(); 5028 goto out; 5029 } 5030 5031 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { 5032 ap_legacy_rates = ap->supp_rates[NL80211_BAND_2GHZ]; 5033 } else { 5034 ap_legacy_rates = 5035 ap->supp_rates[NL80211_BAND_5GHZ] << 5; 5036 } 5037 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16); 5038 5039 rcu_read_unlock(); 5040 5041 if (changed & BSS_CHANGED_ASSOC) { 5042 if (!priv->ap_fw) { 5043 rc = mwl8k_cmd_set_rate(hw, vif, 5044 ap_legacy_rates, 5045 ap_mcs_rates); 5046 if (rc) 5047 goto out; 5048 5049 rc = mwl8k_cmd_use_fixed_rate_sta(hw); 5050 if (rc) 5051 goto out; 5052 } else { 5053 int idx; 5054 int rate; 5055 5056 /* Use AP firmware specific rate command. 5057 */ 5058 idx = ffs(vif->bss_conf.basic_rates); 5059 if (idx) 5060 idx--; 5061 5062 if (hw->conf.chandef.chan->band == 5063 NL80211_BAND_2GHZ) 5064 rate = mwl8k_rates_24[idx].hw_value; 5065 else 5066 rate = mwl8k_rates_50[idx].hw_value; 5067 5068 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5069 } 5070 } 5071 } 5072 5073 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5074 rc = mwl8k_set_radio_preamble(hw, 5075 vif->bss_conf.use_short_preamble); 5076 if (rc) 5077 goto out; 5078 } 5079 5080 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { 5081 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); 5082 if (rc) 5083 goto out; 5084 } 5085 5086 if (vif->bss_conf.assoc && !priv->ap_fw && 5087 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | 5088 BSS_CHANGED_HT))) { 5089 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); 5090 if (rc) 5091 goto out; 5092 } 5093 5094 if (vif->bss_conf.assoc && 5095 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { 5096 /* 5097 * Finalize the join. Tell rx handler to process 5098 * next beacon from our BSSID. 5099 */ 5100 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); 5101 priv->capture_beacon = true; 5102 } 5103 5104 out: 5105 mwl8k_fw_unlock(hw); 5106 } 5107 5108 static void 5109 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5110 struct ieee80211_bss_conf *info, u32 changed) 5111 { 5112 int rc; 5113 5114 if (mwl8k_fw_lock(hw)) 5115 return; 5116 5117 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5118 rc = mwl8k_set_radio_preamble(hw, 5119 vif->bss_conf.use_short_preamble); 5120 if (rc) 5121 goto out; 5122 } 5123 5124 if (changed & BSS_CHANGED_BASIC_RATES) { 5125 int idx; 5126 int rate; 5127 5128 /* 5129 * Use lowest supported basic rate for multicasts 5130 * and management frames (such as probe responses -- 5131 * beacons will always go out at 1 Mb/s). 5132 */ 5133 idx = ffs(vif->bss_conf.basic_rates); 5134 if (idx) 5135 idx--; 5136 5137 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 5138 rate = mwl8k_rates_24[idx].hw_value; 5139 else 5140 rate = mwl8k_rates_50[idx].hw_value; 5141 5142 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5143 } 5144 5145 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { 5146 struct sk_buff *skb; 5147 5148 skb = ieee80211_beacon_get(hw, vif); 5149 if (skb != NULL) { 5150 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); 5151 kfree_skb(skb); 5152 } 5153 } 5154 5155 if (changed & BSS_CHANGED_BEACON_ENABLED) 5156 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); 5157 5158 out: 5159 mwl8k_fw_unlock(hw); 5160 } 5161 5162 static void 5163 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5164 struct ieee80211_bss_conf *info, u32 changed) 5165 { 5166 if (vif->type == NL80211_IFTYPE_STATION) 5167 mwl8k_bss_info_changed_sta(hw, vif, info, changed); 5168 if (vif->type == NL80211_IFTYPE_AP) 5169 mwl8k_bss_info_changed_ap(hw, vif, info, changed); 5170 } 5171 5172 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, 5173 struct netdev_hw_addr_list *mc_list) 5174 { 5175 struct mwl8k_cmd_pkt *cmd; 5176 5177 /* 5178 * Synthesize and return a command packet that programs the 5179 * hardware multicast address filter. At this point we don't 5180 * know whether FIF_ALLMULTI is being requested, but if it is, 5181 * we'll end up throwing this packet away and creating a new 5182 * one in mwl8k_configure_filter(). 5183 */ 5184 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); 5185 5186 return (unsigned long)cmd; 5187 } 5188 5189 static int 5190 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, 5191 unsigned int changed_flags, 5192 unsigned int *total_flags) 5193 { 5194 struct mwl8k_priv *priv = hw->priv; 5195 5196 /* 5197 * Hardware sniffer mode is mutually exclusive with STA 5198 * operation, so refuse to enable sniffer mode if a STA 5199 * interface is active. 5200 */ 5201 if (!list_empty(&priv->vif_list)) { 5202 if (net_ratelimit()) 5203 wiphy_info(hw->wiphy, 5204 "not enabling sniffer mode because STA interface is active\n"); 5205 return 0; 5206 } 5207 5208 if (!priv->sniffer_enabled) { 5209 if (mwl8k_cmd_enable_sniffer(hw, 1)) 5210 return 0; 5211 priv->sniffer_enabled = true; 5212 } 5213 5214 *total_flags &= FIF_ALLMULTI | 5215 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | 5216 FIF_OTHER_BSS; 5217 5218 return 1; 5219 } 5220 5221 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) 5222 { 5223 if (!list_empty(&priv->vif_list)) 5224 return list_entry(priv->vif_list.next, struct mwl8k_vif, list); 5225 5226 return NULL; 5227 } 5228 5229 static void mwl8k_configure_filter(struct ieee80211_hw *hw, 5230 unsigned int changed_flags, 5231 unsigned int *total_flags, 5232 u64 multicast) 5233 { 5234 struct mwl8k_priv *priv = hw->priv; 5235 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; 5236 5237 /* 5238 * AP firmware doesn't allow fine-grained control over 5239 * the receive filter. 5240 */ 5241 if (priv->ap_fw) { 5242 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5243 kfree(cmd); 5244 return; 5245 } 5246 5247 /* 5248 * Enable hardware sniffer mode if FIF_CONTROL or 5249 * FIF_OTHER_BSS is requested. 5250 */ 5251 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && 5252 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { 5253 kfree(cmd); 5254 return; 5255 } 5256 5257 /* Clear unsupported feature flags */ 5258 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5259 5260 if (mwl8k_fw_lock(hw)) { 5261 kfree(cmd); 5262 return; 5263 } 5264 5265 if (priv->sniffer_enabled) { 5266 mwl8k_cmd_enable_sniffer(hw, 0); 5267 priv->sniffer_enabled = false; 5268 } 5269 5270 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 5271 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { 5272 /* 5273 * Disable the BSS filter. 5274 */ 5275 mwl8k_cmd_set_pre_scan(hw); 5276 } else { 5277 struct mwl8k_vif *mwl8k_vif; 5278 const u8 *bssid; 5279 5280 /* 5281 * Enable the BSS filter. 5282 * 5283 * If there is an active STA interface, use that 5284 * interface's BSSID, otherwise use a dummy one 5285 * (where the OUI part needs to be nonzero for 5286 * the BSSID to be accepted by POST_SCAN). 5287 */ 5288 mwl8k_vif = mwl8k_first_vif(priv); 5289 if (mwl8k_vif != NULL) 5290 bssid = mwl8k_vif->vif->bss_conf.bssid; 5291 else 5292 bssid = "\x01\x00\x00\x00\x00\x00"; 5293 5294 mwl8k_cmd_set_post_scan(hw, bssid); 5295 } 5296 } 5297 5298 /* 5299 * If FIF_ALLMULTI is being requested, throw away the command 5300 * packet that ->prepare_multicast() built and replace it with 5301 * a command packet that enables reception of all multicast 5302 * packets. 5303 */ 5304 if (*total_flags & FIF_ALLMULTI) { 5305 kfree(cmd); 5306 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); 5307 } 5308 5309 if (cmd != NULL) { 5310 mwl8k_post_cmd(hw, cmd); 5311 kfree(cmd); 5312 } 5313 5314 mwl8k_fw_unlock(hw); 5315 } 5316 5317 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) 5318 { 5319 return mwl8k_cmd_set_rts_threshold(hw, value); 5320 } 5321 5322 static int mwl8k_sta_remove(struct ieee80211_hw *hw, 5323 struct ieee80211_vif *vif, 5324 struct ieee80211_sta *sta) 5325 { 5326 struct mwl8k_priv *priv = hw->priv; 5327 5328 if (priv->ap_fw) 5329 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); 5330 else 5331 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); 5332 } 5333 5334 static int mwl8k_sta_add(struct ieee80211_hw *hw, 5335 struct ieee80211_vif *vif, 5336 struct ieee80211_sta *sta) 5337 { 5338 struct mwl8k_priv *priv = hw->priv; 5339 int ret; 5340 int i; 5341 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 5342 struct ieee80211_key_conf *key; 5343 5344 if (!priv->ap_fw) { 5345 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); 5346 if (ret >= 0) { 5347 MWL8K_STA(sta)->peer_id = ret; 5348 if (sta->ht_cap.ht_supported) 5349 MWL8K_STA(sta)->is_ampdu_allowed = true; 5350 ret = 0; 5351 } 5352 5353 } else { 5354 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); 5355 } 5356 5357 for (i = 0; i < NUM_WEP_KEYS; i++) { 5358 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); 5359 if (mwl8k_vif->wep_key_conf[i].enabled) 5360 mwl8k_set_key(hw, SET_KEY, vif, sta, key); 5361 } 5362 return ret; 5363 } 5364 5365 static int mwl8k_conf_tx(struct ieee80211_hw *hw, 5366 struct ieee80211_vif *vif, u16 queue, 5367 const struct ieee80211_tx_queue_params *params) 5368 { 5369 struct mwl8k_priv *priv = hw->priv; 5370 int rc; 5371 5372 rc = mwl8k_fw_lock(hw); 5373 if (!rc) { 5374 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); 5375 memcpy(&priv->wmm_params[queue], params, sizeof(*params)); 5376 5377 if (!priv->wmm_enabled) 5378 rc = mwl8k_cmd_set_wmm_mode(hw, 1); 5379 5380 if (!rc) { 5381 int q = MWL8K_TX_WMM_QUEUES - 1 - queue; 5382 rc = mwl8k_cmd_set_edca_params(hw, q, 5383 params->cw_min, 5384 params->cw_max, 5385 params->aifs, 5386 params->txop); 5387 } 5388 5389 mwl8k_fw_unlock(hw); 5390 } 5391 5392 return rc; 5393 } 5394 5395 static int mwl8k_get_stats(struct ieee80211_hw *hw, 5396 struct ieee80211_low_level_stats *stats) 5397 { 5398 return mwl8k_cmd_get_stat(hw, stats); 5399 } 5400 5401 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, 5402 struct survey_info *survey) 5403 { 5404 struct mwl8k_priv *priv = hw->priv; 5405 struct ieee80211_conf *conf = &hw->conf; 5406 struct ieee80211_supported_band *sband; 5407 5408 if (priv->ap_fw) { 5409 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 5410 5411 if (sband && idx >= sband->n_channels) { 5412 idx -= sband->n_channels; 5413 sband = NULL; 5414 } 5415 5416 if (!sband) 5417 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 5418 5419 if (!sband || idx >= sband->n_channels) 5420 return -ENOENT; 5421 5422 memcpy(survey, &priv->survey[idx], sizeof(*survey)); 5423 survey->channel = &sband->channels[idx]; 5424 5425 return 0; 5426 } 5427 5428 if (idx != 0) 5429 return -ENOENT; 5430 5431 survey->channel = conf->chandef.chan; 5432 survey->filled = SURVEY_INFO_NOISE_DBM; 5433 survey->noise = priv->noise; 5434 5435 return 0; 5436 } 5437 5438 #define MAX_AMPDU_ATTEMPTS 5 5439 5440 static int 5441 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5442 struct ieee80211_ampdu_params *params) 5443 { 5444 struct ieee80211_sta *sta = params->sta; 5445 enum ieee80211_ampdu_mlme_action action = params->action; 5446 u16 tid = params->tid; 5447 u16 *ssn = ¶ms->ssn; 5448 u8 buf_size = params->buf_size; 5449 int i, rc = 0; 5450 struct mwl8k_priv *priv = hw->priv; 5451 struct mwl8k_ampdu_stream *stream; 5452 u8 *addr = sta->addr, idx; 5453 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 5454 5455 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) 5456 return -ENOTSUPP; 5457 5458 spin_lock(&priv->stream_lock); 5459 stream = mwl8k_lookup_stream(hw, addr, tid); 5460 5461 switch (action) { 5462 case IEEE80211_AMPDU_RX_START: 5463 case IEEE80211_AMPDU_RX_STOP: 5464 break; 5465 case IEEE80211_AMPDU_TX_START: 5466 /* By the time we get here the hw queues may contain outgoing 5467 * packets for this RA/TID that are not part of this BA 5468 * session. The hw will assign sequence numbers to these 5469 * packets as they go out. So if we query the hw for its next 5470 * sequence number and use that for the SSN here, it may end up 5471 * being wrong, which will lead to sequence number mismatch at 5472 * the recipient. To avoid this, we reset the sequence number 5473 * to O for the first MPDU in this BA stream. 5474 */ 5475 *ssn = 0; 5476 if (stream == NULL) { 5477 /* This means that somebody outside this driver called 5478 * ieee80211_start_tx_ba_session. This is unexpected 5479 * because we do our own rate control. Just warn and 5480 * move on. 5481 */ 5482 wiphy_warn(hw->wiphy, "Unexpected call to %s. " 5483 "Proceeding anyway.\n", __func__); 5484 stream = mwl8k_add_stream(hw, sta, tid); 5485 } 5486 if (stream == NULL) { 5487 wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); 5488 rc = -EBUSY; 5489 break; 5490 } 5491 stream->state = AMPDU_STREAM_IN_PROGRESS; 5492 5493 /* Release the lock before we do the time consuming stuff */ 5494 spin_unlock(&priv->stream_lock); 5495 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { 5496 5497 /* Check if link is still valid */ 5498 if (!sta_info->is_ampdu_allowed) { 5499 spin_lock(&priv->stream_lock); 5500 mwl8k_remove_stream(hw, stream); 5501 spin_unlock(&priv->stream_lock); 5502 return -EBUSY; 5503 } 5504 5505 rc = mwl8k_check_ba(hw, stream, vif); 5506 5507 /* If HW restart is in progress mwl8k_post_cmd will 5508 * return -EBUSY. Avoid retrying mwl8k_check_ba in 5509 * such cases 5510 */ 5511 if (!rc || rc == -EBUSY) 5512 break; 5513 /* 5514 * HW queues take time to be flushed, give them 5515 * sufficient time 5516 */ 5517 5518 msleep(1000); 5519 } 5520 spin_lock(&priv->stream_lock); 5521 if (rc) { 5522 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" 5523 " attempts\n", tid, MAX_AMPDU_ATTEMPTS); 5524 mwl8k_remove_stream(hw, stream); 5525 rc = -EBUSY; 5526 break; 5527 } 5528 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE; 5529 break; 5530 case IEEE80211_AMPDU_TX_STOP_CONT: 5531 case IEEE80211_AMPDU_TX_STOP_FLUSH: 5532 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 5533 if (stream) { 5534 if (stream->state == AMPDU_STREAM_ACTIVE) { 5535 idx = stream->idx; 5536 spin_unlock(&priv->stream_lock); 5537 mwl8k_destroy_ba(hw, idx); 5538 spin_lock(&priv->stream_lock); 5539 } 5540 mwl8k_remove_stream(hw, stream); 5541 } 5542 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); 5543 break; 5544 case IEEE80211_AMPDU_TX_OPERATIONAL: 5545 BUG_ON(stream == NULL); 5546 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); 5547 spin_unlock(&priv->stream_lock); 5548 rc = mwl8k_create_ba(hw, stream, buf_size, vif); 5549 spin_lock(&priv->stream_lock); 5550 if (!rc) 5551 stream->state = AMPDU_STREAM_ACTIVE; 5552 else { 5553 idx = stream->idx; 5554 spin_unlock(&priv->stream_lock); 5555 mwl8k_destroy_ba(hw, idx); 5556 spin_lock(&priv->stream_lock); 5557 wiphy_debug(hw->wiphy, 5558 "Failed adding stream for sta %pM tid %d\n", 5559 addr, tid); 5560 mwl8k_remove_stream(hw, stream); 5561 } 5562 break; 5563 5564 default: 5565 rc = -ENOTSUPP; 5566 } 5567 5568 spin_unlock(&priv->stream_lock); 5569 return rc; 5570 } 5571 5572 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, 5573 struct ieee80211_vif *vif, 5574 const u8 *mac_addr) 5575 { 5576 struct mwl8k_priv *priv = hw->priv; 5577 u8 tmp; 5578 5579 if (!priv->ap_fw) 5580 return; 5581 5582 /* clear all stats */ 5583 priv->channel_time = 0; 5584 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5585 ioread32(priv->regs + NOK_CCA_CNT_REG); 5586 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5587 5588 priv->sw_scan_start = true; 5589 } 5590 5591 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, 5592 struct ieee80211_vif *vif) 5593 { 5594 struct mwl8k_priv *priv = hw->priv; 5595 u8 tmp; 5596 5597 if (!priv->ap_fw) 5598 return; 5599 5600 priv->sw_scan_start = false; 5601 5602 /* clear all stats */ 5603 priv->channel_time = 0; 5604 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5605 ioread32(priv->regs + NOK_CCA_CNT_REG); 5606 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5607 } 5608 5609 static const struct ieee80211_ops mwl8k_ops = { 5610 .tx = mwl8k_tx, 5611 .start = mwl8k_start, 5612 .stop = mwl8k_stop, 5613 .add_interface = mwl8k_add_interface, 5614 .remove_interface = mwl8k_remove_interface, 5615 .config = mwl8k_config, 5616 .bss_info_changed = mwl8k_bss_info_changed, 5617 .prepare_multicast = mwl8k_prepare_multicast, 5618 .configure_filter = mwl8k_configure_filter, 5619 .set_key = mwl8k_set_key, 5620 .set_rts_threshold = mwl8k_set_rts_threshold, 5621 .sta_add = mwl8k_sta_add, 5622 .sta_remove = mwl8k_sta_remove, 5623 .conf_tx = mwl8k_conf_tx, 5624 .get_stats = mwl8k_get_stats, 5625 .get_survey = mwl8k_get_survey, 5626 .ampdu_action = mwl8k_ampdu_action, 5627 .sw_scan_start = mwl8k_sw_scan_start, 5628 .sw_scan_complete = mwl8k_sw_scan_complete, 5629 }; 5630 5631 static void mwl8k_finalize_join_worker(struct work_struct *work) 5632 { 5633 struct mwl8k_priv *priv = 5634 container_of(work, struct mwl8k_priv, finalize_join_worker); 5635 struct sk_buff *skb = priv->beacon_skb; 5636 struct ieee80211_mgmt *mgmt = (void *)skb->data; 5637 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 5638 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, 5639 mgmt->u.beacon.variable, len); 5640 int dtim_period = 1; 5641 5642 if (tim && tim[1] >= 2) 5643 dtim_period = tim[3]; 5644 5645 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); 5646 5647 dev_kfree_skb(skb); 5648 priv->beacon_skb = NULL; 5649 } 5650 5651 enum { 5652 MWL8363 = 0, 5653 MWL8687, 5654 MWL8366, 5655 MWL8764, 5656 }; 5657 5658 #define MWL8K_8366_AP_FW_API 3 5659 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" 5660 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) 5661 5662 #define MWL8K_8764_AP_FW_API 1 5663 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" 5664 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) 5665 5666 static struct mwl8k_device_info mwl8k_info_tbl[] = { 5667 [MWL8363] = { 5668 .part_name = "88w8363", 5669 .helper_image = "mwl8k/helper_8363.fw", 5670 .fw_image_sta = "mwl8k/fmimage_8363.fw", 5671 }, 5672 [MWL8687] = { 5673 .part_name = "88w8687", 5674 .helper_image = "mwl8k/helper_8687.fw", 5675 .fw_image_sta = "mwl8k/fmimage_8687.fw", 5676 }, 5677 [MWL8366] = { 5678 .part_name = "88w8366", 5679 .helper_image = "mwl8k/helper_8366.fw", 5680 .fw_image_sta = "mwl8k/fmimage_8366.fw", 5681 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), 5682 .fw_api_ap = MWL8K_8366_AP_FW_API, 5683 .ap_rxd_ops = &rxd_ap_ops, 5684 }, 5685 [MWL8764] = { 5686 .part_name = "88w8764", 5687 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), 5688 .fw_api_ap = MWL8K_8764_AP_FW_API, 5689 .ap_rxd_ops = &rxd_ap_ops, 5690 }, 5691 }; 5692 5693 MODULE_FIRMWARE("mwl8k/helper_8363.fw"); 5694 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); 5695 MODULE_FIRMWARE("mwl8k/helper_8687.fw"); 5696 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); 5697 MODULE_FIRMWARE("mwl8k/helper_8366.fw"); 5698 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); 5699 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); 5700 5701 static const struct pci_device_id mwl8k_pci_id_table[] = { 5702 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, 5703 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, 5704 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, 5705 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, 5706 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, 5707 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, 5708 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, 5709 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, 5710 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, 5711 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, 5712 { }, 5713 }; 5714 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); 5715 5716 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) 5717 { 5718 int rc; 5719 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" 5720 "Trying alternative firmware %s\n", pci_name(priv->pdev), 5721 priv->fw_pref, priv->fw_alt); 5722 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); 5723 if (rc) { 5724 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5725 pci_name(priv->pdev), priv->fw_alt); 5726 return rc; 5727 } 5728 return 0; 5729 } 5730 5731 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); 5732 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) 5733 { 5734 struct mwl8k_priv *priv = context; 5735 struct mwl8k_device_info *di = priv->device_info; 5736 int rc; 5737 5738 switch (priv->fw_state) { 5739 case FW_STATE_INIT: 5740 if (!fw) { 5741 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 5742 pci_name(priv->pdev), di->helper_image); 5743 goto fail; 5744 } 5745 priv->fw_helper = fw; 5746 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, 5747 true); 5748 if (rc && priv->fw_alt) { 5749 rc = mwl8k_request_alt_fw(priv); 5750 if (rc) 5751 goto fail; 5752 priv->fw_state = FW_STATE_LOADING_ALT; 5753 } else if (rc) 5754 goto fail; 5755 else 5756 priv->fw_state = FW_STATE_LOADING_PREF; 5757 break; 5758 5759 case FW_STATE_LOADING_PREF: 5760 if (!fw) { 5761 if (priv->fw_alt) { 5762 rc = mwl8k_request_alt_fw(priv); 5763 if (rc) 5764 goto fail; 5765 priv->fw_state = FW_STATE_LOADING_ALT; 5766 } else 5767 goto fail; 5768 } else { 5769 priv->fw_ucode = fw; 5770 rc = mwl8k_firmware_load_success(priv); 5771 if (rc) 5772 goto fail; 5773 else 5774 complete(&priv->firmware_loading_complete); 5775 } 5776 break; 5777 5778 case FW_STATE_LOADING_ALT: 5779 if (!fw) { 5780 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5781 pci_name(priv->pdev), di->helper_image); 5782 goto fail; 5783 } 5784 priv->fw_ucode = fw; 5785 rc = mwl8k_firmware_load_success(priv); 5786 if (rc) 5787 goto fail; 5788 else 5789 complete(&priv->firmware_loading_complete); 5790 break; 5791 5792 default: 5793 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", 5794 MWL8K_NAME, priv->fw_state); 5795 BUG_ON(1); 5796 } 5797 5798 return; 5799 5800 fail: 5801 priv->fw_state = FW_STATE_ERROR; 5802 complete(&priv->firmware_loading_complete); 5803 device_release_driver(&priv->pdev->dev); 5804 mwl8k_release_firmware(priv); 5805 } 5806 5807 #define MAX_RESTART_ATTEMPTS 1 5808 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, 5809 bool nowait) 5810 { 5811 struct mwl8k_priv *priv = hw->priv; 5812 int rc; 5813 int count = MAX_RESTART_ATTEMPTS; 5814 5815 retry: 5816 /* Reset firmware and hardware */ 5817 mwl8k_hw_reset(priv); 5818 5819 /* Ask userland hotplug daemon for the device firmware */ 5820 rc = mwl8k_request_firmware(priv, fw_image, nowait); 5821 if (rc) { 5822 wiphy_err(hw->wiphy, "Firmware files not found\n"); 5823 return rc; 5824 } 5825 5826 if (nowait) 5827 return rc; 5828 5829 /* Load firmware into hardware */ 5830 rc = mwl8k_load_firmware(hw); 5831 if (rc) 5832 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 5833 5834 /* Reclaim memory once firmware is successfully loaded */ 5835 mwl8k_release_firmware(priv); 5836 5837 if (rc && count) { 5838 /* FW did not start successfully; 5839 * lets try one more time 5840 */ 5841 count--; 5842 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); 5843 msleep(20); 5844 goto retry; 5845 } 5846 5847 return rc; 5848 } 5849 5850 static int mwl8k_init_txqs(struct ieee80211_hw *hw) 5851 { 5852 struct mwl8k_priv *priv = hw->priv; 5853 int rc = 0; 5854 int i; 5855 5856 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 5857 rc = mwl8k_txq_init(hw, i); 5858 if (rc) 5859 break; 5860 if (priv->ap_fw) 5861 iowrite32(priv->txq[i].txd_dma, 5862 priv->sram + priv->txq_offset[i]); 5863 } 5864 return rc; 5865 } 5866 5867 /* initialize hw after successfully loading a firmware image */ 5868 static int mwl8k_probe_hw(struct ieee80211_hw *hw) 5869 { 5870 struct mwl8k_priv *priv = hw->priv; 5871 int rc = 0; 5872 int i; 5873 5874 if (priv->ap_fw) { 5875 priv->rxd_ops = priv->device_info->ap_rxd_ops; 5876 if (priv->rxd_ops == NULL) { 5877 wiphy_err(hw->wiphy, 5878 "Driver does not have AP firmware image support for this hardware\n"); 5879 rc = -ENOENT; 5880 goto err_stop_firmware; 5881 } 5882 } else { 5883 priv->rxd_ops = &rxd_sta_ops; 5884 } 5885 5886 priv->sniffer_enabled = false; 5887 priv->wmm_enabled = false; 5888 priv->pending_tx_pkts = 0; 5889 atomic_set(&priv->watchdog_event_pending, 0); 5890 5891 rc = mwl8k_rxq_init(hw, 0); 5892 if (rc) 5893 goto err_stop_firmware; 5894 rxq_refill(hw, 0, INT_MAX); 5895 5896 /* For the sta firmware, we need to know the dma addresses of tx queues 5897 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them 5898 * prior to issuing this command. But for the AP case, we learn the 5899 * total number of queues from the result CMD_GET_HW_SPEC, so for this 5900 * case we must initialize the tx queues after. 5901 */ 5902 priv->num_ampdu_queues = 0; 5903 if (!priv->ap_fw) { 5904 rc = mwl8k_init_txqs(hw); 5905 if (rc) 5906 goto err_free_queues; 5907 } 5908 5909 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 5910 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5911 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| 5912 MWL8K_A2H_INT_BA_WATCHDOG, 5913 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); 5914 iowrite32(MWL8K_A2H_INT_OPC_DONE, 5915 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 5916 5917 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 5918 IRQF_SHARED, MWL8K_NAME, hw); 5919 if (rc) { 5920 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 5921 goto err_free_queues; 5922 } 5923 5924 /* 5925 * When hw restart is requested, 5926 * mac80211 will take care of clearing 5927 * the ampdu streams, so do not clear 5928 * the ampdu state here 5929 */ 5930 if (!priv->hw_restart_in_progress) 5931 memset(priv->ampdu, 0, sizeof(priv->ampdu)); 5932 5933 /* 5934 * Temporarily enable interrupts. Initial firmware host 5935 * commands use interrupts and avoid polling. Disable 5936 * interrupts when done. 5937 */ 5938 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5939 5940 /* Get config data, mac addrs etc */ 5941 if (priv->ap_fw) { 5942 rc = mwl8k_cmd_get_hw_spec_ap(hw); 5943 if (!rc) 5944 rc = mwl8k_init_txqs(hw); 5945 if (!rc) 5946 rc = mwl8k_cmd_set_hw_spec(hw); 5947 } else { 5948 rc = mwl8k_cmd_get_hw_spec_sta(hw); 5949 } 5950 if (rc) { 5951 wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); 5952 goto err_free_irq; 5953 } 5954 5955 /* Turn radio off */ 5956 rc = mwl8k_cmd_radio_disable(hw); 5957 if (rc) { 5958 wiphy_err(hw->wiphy, "Cannot disable\n"); 5959 goto err_free_irq; 5960 } 5961 5962 /* Clear MAC address */ 5963 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); 5964 if (rc) { 5965 wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); 5966 goto err_free_irq; 5967 } 5968 5969 /* Configure Antennas */ 5970 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); 5971 if (rc) 5972 wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); 5973 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); 5974 if (rc) 5975 wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); 5976 5977 5978 /* Disable interrupts */ 5979 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5980 free_irq(priv->pdev->irq, hw); 5981 5982 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", 5983 priv->device_info->part_name, 5984 priv->hw_rev, hw->wiphy->perm_addr, 5985 priv->ap_fw ? "AP" : "STA", 5986 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, 5987 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); 5988 5989 return 0; 5990 5991 err_free_irq: 5992 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5993 free_irq(priv->pdev->irq, hw); 5994 5995 err_free_queues: 5996 for (i = 0; i < mwl8k_tx_queues(priv); i++) 5997 mwl8k_txq_deinit(hw, i); 5998 mwl8k_rxq_deinit(hw, 0); 5999 6000 err_stop_firmware: 6001 mwl8k_hw_reset(priv); 6002 6003 return rc; 6004 } 6005 6006 /* 6007 * invoke mwl8k_reload_firmware to change the firmware image after the device 6008 * has already been registered 6009 */ 6010 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) 6011 { 6012 int i, rc = 0; 6013 struct mwl8k_priv *priv = hw->priv; 6014 struct mwl8k_vif *vif, *tmp_vif; 6015 6016 mwl8k_stop(hw); 6017 mwl8k_rxq_deinit(hw, 0); 6018 6019 /* 6020 * All the existing interfaces are re-added by the ieee80211_reconfig; 6021 * which means driver should remove existing interfaces before calling 6022 * ieee80211_restart_hw 6023 */ 6024 if (priv->hw_restart_in_progress) 6025 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) 6026 mwl8k_remove_vif(priv, vif); 6027 6028 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6029 mwl8k_txq_deinit(hw, i); 6030 6031 rc = mwl8k_init_firmware(hw, fw_image, false); 6032 if (rc) 6033 goto fail; 6034 6035 rc = mwl8k_probe_hw(hw); 6036 if (rc) 6037 goto fail; 6038 6039 if (priv->hw_restart_in_progress) 6040 return rc; 6041 6042 rc = mwl8k_start(hw); 6043 if (rc) 6044 goto fail; 6045 6046 rc = mwl8k_config(hw, ~0); 6047 if (rc) 6048 goto fail; 6049 6050 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { 6051 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]); 6052 if (rc) 6053 goto fail; 6054 } 6055 6056 return rc; 6057 6058 fail: 6059 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); 6060 return rc; 6061 } 6062 6063 static const struct ieee80211_iface_limit ap_if_limits[] = { 6064 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, 6065 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, 6066 }; 6067 6068 static const struct ieee80211_iface_combination ap_if_comb = { 6069 .limits = ap_if_limits, 6070 .n_limits = ARRAY_SIZE(ap_if_limits), 6071 .max_interfaces = 8, 6072 .num_different_channels = 1, 6073 }; 6074 6075 6076 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) 6077 { 6078 struct ieee80211_hw *hw = priv->hw; 6079 int i, rc; 6080 6081 rc = mwl8k_load_firmware(hw); 6082 mwl8k_release_firmware(priv); 6083 if (rc) { 6084 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 6085 return rc; 6086 } 6087 6088 /* 6089 * Extra headroom is the size of the required DMA header 6090 * minus the size of the smallest 802.11 frame (CTS frame). 6091 */ 6092 hw->extra_tx_headroom = 6093 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); 6094 6095 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; 6096 6097 hw->queues = MWL8K_TX_WMM_QUEUES; 6098 6099 /* Set rssi values to dBm */ 6100 ieee80211_hw_set(hw, SIGNAL_DBM); 6101 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 6102 6103 /* 6104 * Ask mac80211 to not to trigger PS mode 6105 * based on PM bit of incoming frames. 6106 */ 6107 if (priv->ap_fw) 6108 ieee80211_hw_set(hw, AP_LINK_PS); 6109 6110 hw->vif_data_size = sizeof(struct mwl8k_vif); 6111 hw->sta_data_size = sizeof(struct mwl8k_sta); 6112 6113 priv->macids_used = 0; 6114 INIT_LIST_HEAD(&priv->vif_list); 6115 6116 /* Set default radio state and preamble */ 6117 priv->radio_on = false; 6118 priv->radio_short_preamble = false; 6119 6120 /* Finalize join worker */ 6121 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); 6122 /* Handle watchdog ba events */ 6123 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); 6124 /* To reload the firmware if it crashes */ 6125 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); 6126 6127 /* TX reclaim and RX tasklets. */ 6128 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll); 6129 tasklet_disable(&priv->poll_tx_task); 6130 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll); 6131 tasklet_disable(&priv->poll_rx_task); 6132 6133 /* Power management cookie */ 6134 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4, 6135 &priv->cookie_dma, GFP_KERNEL); 6136 if (priv->cookie == NULL) 6137 return -ENOMEM; 6138 6139 mutex_init(&priv->fw_mutex); 6140 priv->fw_mutex_owner = NULL; 6141 priv->fw_mutex_depth = 0; 6142 priv->hostcmd_wait = NULL; 6143 6144 spin_lock_init(&priv->tx_lock); 6145 6146 spin_lock_init(&priv->stream_lock); 6147 6148 priv->tx_wait = NULL; 6149 6150 rc = mwl8k_probe_hw(hw); 6151 if (rc) 6152 goto err_free_cookie; 6153 6154 hw->wiphy->interface_modes = 0; 6155 6156 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { 6157 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); 6158 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6159 hw->wiphy->iface_combinations = &ap_if_comb; 6160 hw->wiphy->n_iface_combinations = 1; 6161 } 6162 6163 if (priv->sta_macids_supported || priv->device_info->fw_image_sta) 6164 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6165 6166 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 6167 6168 rc = ieee80211_register_hw(hw); 6169 if (rc) { 6170 wiphy_err(hw->wiphy, "Cannot register device\n"); 6171 goto err_unprobe_hw; 6172 } 6173 6174 return 0; 6175 6176 err_unprobe_hw: 6177 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6178 mwl8k_txq_deinit(hw, i); 6179 mwl8k_rxq_deinit(hw, 0); 6180 6181 err_free_cookie: 6182 if (priv->cookie != NULL) 6183 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, 6184 priv->cookie_dma); 6185 6186 return rc; 6187 } 6188 static int mwl8k_probe(struct pci_dev *pdev, 6189 const struct pci_device_id *id) 6190 { 6191 static int printed_version; 6192 struct ieee80211_hw *hw; 6193 struct mwl8k_priv *priv; 6194 struct mwl8k_device_info *di; 6195 int rc; 6196 6197 if (!printed_version) { 6198 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); 6199 printed_version = 1; 6200 } 6201 6202 6203 rc = pci_enable_device(pdev); 6204 if (rc) { 6205 printk(KERN_ERR "%s: Cannot enable new PCI device\n", 6206 MWL8K_NAME); 6207 return rc; 6208 } 6209 6210 rc = pci_request_regions(pdev, MWL8K_NAME); 6211 if (rc) { 6212 printk(KERN_ERR "%s: Cannot obtain PCI resources\n", 6213 MWL8K_NAME); 6214 goto err_disable_device; 6215 } 6216 6217 pci_set_master(pdev); 6218 6219 6220 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); 6221 if (hw == NULL) { 6222 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); 6223 rc = -ENOMEM; 6224 goto err_free_reg; 6225 } 6226 6227 SET_IEEE80211_DEV(hw, &pdev->dev); 6228 pci_set_drvdata(pdev, hw); 6229 6230 priv = hw->priv; 6231 priv->hw = hw; 6232 priv->pdev = pdev; 6233 priv->device_info = &mwl8k_info_tbl[id->driver_data]; 6234 6235 if (id->driver_data == MWL8764) 6236 priv->is_8764 = true; 6237 6238 priv->sram = pci_iomap(pdev, 0, 0x10000); 6239 if (priv->sram == NULL) { 6240 wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); 6241 rc = -EIO; 6242 goto err_iounmap; 6243 } 6244 6245 /* 6246 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. 6247 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. 6248 */ 6249 priv->regs = pci_iomap(pdev, 1, 0x10000); 6250 if (priv->regs == NULL) { 6251 priv->regs = pci_iomap(pdev, 2, 0x10000); 6252 if (priv->regs == NULL) { 6253 wiphy_err(hw->wiphy, "Cannot map device registers\n"); 6254 rc = -EIO; 6255 goto err_iounmap; 6256 } 6257 } 6258 6259 /* 6260 * Choose the initial fw image depending on user input. If a second 6261 * image is available, make it the alternative image that will be 6262 * loaded if the first one fails. 6263 */ 6264 init_completion(&priv->firmware_loading_complete); 6265 di = priv->device_info; 6266 if (ap_mode_default && di->fw_image_ap) { 6267 priv->fw_pref = di->fw_image_ap; 6268 priv->fw_alt = di->fw_image_sta; 6269 } else if (!ap_mode_default && di->fw_image_sta) { 6270 priv->fw_pref = di->fw_image_sta; 6271 priv->fw_alt = di->fw_image_ap; 6272 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { 6273 printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); 6274 priv->fw_pref = di->fw_image_sta; 6275 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { 6276 printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); 6277 priv->fw_pref = di->fw_image_ap; 6278 } 6279 rc = mwl8k_init_firmware(hw, priv->fw_pref, true); 6280 if (rc) 6281 goto err_stop_firmware; 6282 6283 priv->hw_restart_in_progress = false; 6284 6285 priv->running_bsses = 0; 6286 6287 return rc; 6288 6289 err_stop_firmware: 6290 mwl8k_hw_reset(priv); 6291 6292 err_iounmap: 6293 if (priv->regs != NULL) 6294 pci_iounmap(pdev, priv->regs); 6295 6296 if (priv->sram != NULL) 6297 pci_iounmap(pdev, priv->sram); 6298 6299 ieee80211_free_hw(hw); 6300 6301 err_free_reg: 6302 pci_release_regions(pdev); 6303 6304 err_disable_device: 6305 pci_disable_device(pdev); 6306 6307 return rc; 6308 } 6309 6310 static void mwl8k_remove(struct pci_dev *pdev) 6311 { 6312 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 6313 struct mwl8k_priv *priv; 6314 int i; 6315 6316 if (hw == NULL) 6317 return; 6318 priv = hw->priv; 6319 6320 wait_for_completion(&priv->firmware_loading_complete); 6321 6322 if (priv->fw_state == FW_STATE_ERROR) { 6323 mwl8k_hw_reset(priv); 6324 goto unmap; 6325 } 6326 6327 ieee80211_stop_queues(hw); 6328 6329 ieee80211_unregister_hw(hw); 6330 6331 /* Remove TX reclaim and RX tasklets. */ 6332 tasklet_kill(&priv->poll_tx_task); 6333 tasklet_kill(&priv->poll_rx_task); 6334 6335 /* Stop hardware */ 6336 mwl8k_hw_reset(priv); 6337 6338 /* Return all skbs to mac80211 */ 6339 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6340 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 6341 6342 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6343 mwl8k_txq_deinit(hw, i); 6344 6345 mwl8k_rxq_deinit(hw, 0); 6346 6347 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma); 6348 6349 unmap: 6350 pci_iounmap(pdev, priv->regs); 6351 pci_iounmap(pdev, priv->sram); 6352 ieee80211_free_hw(hw); 6353 pci_release_regions(pdev); 6354 pci_disable_device(pdev); 6355 } 6356 6357 static struct pci_driver mwl8k_driver = { 6358 .name = MWL8K_NAME, 6359 .id_table = mwl8k_pci_id_table, 6360 .probe = mwl8k_probe, 6361 .remove = mwl8k_remove, 6362 }; 6363 6364 module_pci_driver(mwl8k_driver); 6365 6366 MODULE_DESCRIPTION(MWL8K_DESC); 6367 MODULE_VERSION(MWL8K_VERSION); 6368 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); 6369 MODULE_LICENSE("GPL"); 6370