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 /* New members MUST be added within the __struct_group() macro below. */ 591 __struct_group(mwl8k_cmd_pkt_hdr, hdr, __packed, 592 __le16 code; 593 __le16 length; 594 __u8 seq_num; 595 __u8 macid; 596 __le16 result; 597 ); 598 char payload[]; 599 } __packed; 600 static_assert(offsetof(struct mwl8k_cmd_pkt, payload) == sizeof(struct mwl8k_cmd_pkt_hdr), 601 "struct member likely outside of __struct_group()"); 602 603 /* 604 * Firmware loading. 605 */ 606 static int 607 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) 608 { 609 void __iomem *regs = priv->regs; 610 dma_addr_t dma_addr; 611 int loops; 612 613 dma_addr = dma_map_single(&priv->pdev->dev, data, length, 614 DMA_TO_DEVICE); 615 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) 616 return -ENOMEM; 617 618 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 619 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 620 iowrite32(MWL8K_H2A_INT_DOORBELL, 621 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 622 iowrite32(MWL8K_H2A_INT_DUMMY, 623 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 624 625 loops = 1000; 626 do { 627 u32 int_code; 628 if (priv->is_8764) { 629 int_code = ioread32(regs + 630 MWL8K_HIU_H2A_INTERRUPT_STATUS); 631 if (int_code == 0) 632 break; 633 } else { 634 int_code = ioread32(regs + MWL8K_HIU_INT_CODE); 635 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { 636 iowrite32(0, regs + MWL8K_HIU_INT_CODE); 637 break; 638 } 639 } 640 cond_resched(); 641 udelay(1); 642 } while (--loops); 643 644 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE); 645 646 return loops ? 0 : -ETIMEDOUT; 647 } 648 649 static int mwl8k_load_fw_image(struct mwl8k_priv *priv, 650 const u8 *data, size_t length) 651 { 652 struct mwl8k_cmd_pkt *cmd; 653 int done; 654 int rc = 0; 655 656 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); 657 if (cmd == NULL) 658 return -ENOMEM; 659 660 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); 661 cmd->seq_num = 0; 662 cmd->macid = 0; 663 cmd->result = 0; 664 665 done = 0; 666 while (length) { 667 int block_size = length > 256 ? 256 : length; 668 669 memcpy(cmd->payload, data + done, block_size); 670 cmd->length = cpu_to_le16(block_size); 671 672 rc = mwl8k_send_fw_load_cmd(priv, cmd, 673 sizeof(*cmd) + block_size); 674 if (rc) 675 break; 676 677 done += block_size; 678 length -= block_size; 679 } 680 681 if (!rc) { 682 cmd->length = 0; 683 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); 684 } 685 686 kfree(cmd); 687 688 return rc; 689 } 690 691 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, 692 const u8 *data, size_t length) 693 { 694 unsigned char *buffer; 695 int may_continue, rc = 0; 696 u32 done, prev_block_size; 697 698 buffer = kmalloc(1024, GFP_KERNEL); 699 if (buffer == NULL) 700 return -ENOMEM; 701 702 done = 0; 703 prev_block_size = 0; 704 may_continue = 1000; 705 while (may_continue > 0) { 706 u32 block_size; 707 708 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); 709 if (block_size & 1) { 710 block_size &= ~1; 711 may_continue--; 712 } else { 713 done += prev_block_size; 714 length -= prev_block_size; 715 } 716 717 if (block_size > 1024 || block_size > length) { 718 rc = -EOVERFLOW; 719 break; 720 } 721 722 if (length == 0) { 723 rc = 0; 724 break; 725 } 726 727 if (block_size == 0) { 728 rc = -EPROTO; 729 may_continue--; 730 udelay(1); 731 continue; 732 } 733 734 prev_block_size = block_size; 735 memcpy(buffer, data + done, block_size); 736 737 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); 738 if (rc) 739 break; 740 } 741 742 if (!rc && length != 0) 743 rc = -EREMOTEIO; 744 745 kfree(buffer); 746 747 return rc; 748 } 749 750 static int mwl8k_load_firmware(struct ieee80211_hw *hw) 751 { 752 struct mwl8k_priv *priv = hw->priv; 753 const struct firmware *fw = priv->fw_ucode; 754 int rc; 755 int loops; 756 757 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) { 758 const struct firmware *helper = priv->fw_helper; 759 760 if (helper == NULL) { 761 printk(KERN_ERR "%s: helper image needed but none " 762 "given\n", pci_name(priv->pdev)); 763 return -EINVAL; 764 } 765 766 rc = mwl8k_load_fw_image(priv, helper->data, helper->size); 767 if (rc) { 768 printk(KERN_ERR "%s: unable to load firmware " 769 "helper image\n", pci_name(priv->pdev)); 770 return rc; 771 } 772 msleep(20); 773 774 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 775 } else { 776 if (priv->is_8764) 777 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); 778 else 779 rc = mwl8k_load_fw_image(priv, fw->data, fw->size); 780 } 781 782 if (rc) { 783 printk(KERN_ERR "%s: unable to load firmware image\n", 784 pci_name(priv->pdev)); 785 return rc; 786 } 787 788 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); 789 790 loops = 500000; 791 do { 792 u32 ready_code; 793 794 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); 795 if (ready_code == MWL8K_FWAP_READY) { 796 priv->ap_fw = true; 797 break; 798 } else if (ready_code == MWL8K_FWSTA_READY) { 799 priv->ap_fw = false; 800 break; 801 } 802 803 cond_resched(); 804 udelay(1); 805 } while (--loops); 806 807 return loops ? 0 : -ETIMEDOUT; 808 } 809 810 811 /* DMA header used by firmware and hardware. */ 812 struct mwl8k_dma_data { 813 __le16 fwlen; 814 struct ieee80211_hdr wh; 815 char data[]; 816 } __packed __aligned(2); 817 818 /* Routines to add/remove DMA header from skb. */ 819 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) 820 { 821 struct mwl8k_dma_data *tr; 822 int hdrlen; 823 824 tr = (struct mwl8k_dma_data *)skb->data; 825 hdrlen = ieee80211_hdrlen(tr->wh.frame_control); 826 827 if (hdrlen != sizeof(tr->wh)) { 828 if (ieee80211_is_data_qos(tr->wh.frame_control)) { 829 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); 830 *((__le16 *)(tr->data - 2)) = qos; 831 } else { 832 memmove(tr->data - hdrlen, &tr->wh, hdrlen); 833 } 834 } 835 836 if (hdrlen != sizeof(*tr)) 837 skb_pull(skb, sizeof(*tr) - hdrlen); 838 } 839 840 #define REDUCED_TX_HEADROOM 8 841 842 static void 843 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, 844 int head_pad, int tail_pad) 845 { 846 struct ieee80211_hdr *wh; 847 int hdrlen; 848 int reqd_hdrlen; 849 struct mwl8k_dma_data *tr; 850 851 /* 852 * Add a firmware DMA header; the firmware requires that we 853 * present a 2-byte payload length followed by a 4-address 854 * header (without QoS field), followed (optionally) by any 855 * WEP/ExtIV header (but only filled in for CCMP). 856 */ 857 wh = (struct ieee80211_hdr *)skb->data; 858 859 hdrlen = ieee80211_hdrlen(wh->frame_control); 860 861 /* 862 * Check if skb_resize is required because of 863 * tx_headroom adjustment. 864 */ 865 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) 866 + REDUCED_TX_HEADROOM))) { 867 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { 868 869 wiphy_err(priv->hw->wiphy, 870 "Failed to reallocate TX buffer\n"); 871 return; 872 } 873 skb->truesize += REDUCED_TX_HEADROOM; 874 } 875 876 reqd_hdrlen = sizeof(*tr) + head_pad; 877 878 if (hdrlen != reqd_hdrlen) 879 skb_push(skb, reqd_hdrlen - hdrlen); 880 881 if (ieee80211_is_data_qos(wh->frame_control)) 882 hdrlen -= IEEE80211_QOS_CTL_LEN; 883 884 tr = (struct mwl8k_dma_data *)skb->data; 885 if (wh != &tr->wh) 886 memmove(&tr->wh, wh, hdrlen); 887 if (hdrlen != sizeof(tr->wh)) 888 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); 889 890 /* 891 * Firmware length is the length of the fully formed "802.11 892 * payload". That is, everything except for the 802.11 header. 893 * This includes all crypto material including the MIC. 894 */ 895 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); 896 } 897 898 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, 899 struct sk_buff *skb) 900 { 901 struct ieee80211_hdr *wh; 902 struct ieee80211_tx_info *tx_info; 903 struct ieee80211_key_conf *key_conf; 904 int data_pad; 905 int head_pad = 0; 906 907 wh = (struct ieee80211_hdr *)skb->data; 908 909 tx_info = IEEE80211_SKB_CB(skb); 910 911 key_conf = NULL; 912 if (ieee80211_is_data(wh->frame_control)) 913 key_conf = tx_info->control.hw_key; 914 915 /* 916 * Make sure the packet header is in the DMA header format (4-address 917 * without QoS), and add head & tail padding when HW crypto is enabled. 918 * 919 * We have the following trailer padding requirements: 920 * - WEP: 4 trailer bytes (ICV) 921 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) 922 * - CCMP: 8 trailer bytes (MIC) 923 */ 924 data_pad = 0; 925 if (key_conf != NULL) { 926 head_pad = key_conf->iv_len; 927 switch (key_conf->cipher) { 928 case WLAN_CIPHER_SUITE_WEP40: 929 case WLAN_CIPHER_SUITE_WEP104: 930 data_pad = 4; 931 break; 932 case WLAN_CIPHER_SUITE_TKIP: 933 data_pad = 12; 934 break; 935 case WLAN_CIPHER_SUITE_CCMP: 936 data_pad = 8; 937 break; 938 } 939 } 940 mwl8k_add_dma_header(priv, skb, head_pad, data_pad); 941 } 942 943 /* 944 * Packet reception for 88w8366/88w8764 AP firmware. 945 */ 946 struct mwl8k_rxd_ap { 947 __le16 pkt_len; 948 __u8 sq2; 949 __u8 rate; 950 __le32 pkt_phys_addr; 951 __le32 next_rxd_phys_addr; 952 __le16 qos_control; 953 __le16 htsig2; 954 __le32 hw_rssi_info; 955 __le32 hw_noise_floor_info; 956 __u8 noise_floor; 957 __u8 pad0[3]; 958 __u8 rssi; 959 __u8 rx_status; 960 __u8 channel; 961 __u8 rx_ctrl; 962 } __packed; 963 964 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80 965 #define MWL8K_AP_RATE_INFO_40MHZ 0x40 966 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) 967 968 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80 969 970 /* 8366/8764 AP rx_status bits */ 971 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 972 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF 973 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 974 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 975 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 976 977 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr) 978 { 979 struct mwl8k_rxd_ap *rxd = _rxd; 980 981 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 982 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST; 983 } 984 985 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len) 986 { 987 struct mwl8k_rxd_ap *rxd = _rxd; 988 989 rxd->pkt_len = cpu_to_le16(len); 990 rxd->pkt_phys_addr = cpu_to_le32(addr); 991 wmb(); 992 rxd->rx_ctrl = 0; 993 } 994 995 static int 996 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, 997 __le16 *qos, s8 *noise) 998 { 999 struct mwl8k_rxd_ap *rxd = _rxd; 1000 1001 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST)) 1002 return -1; 1003 rmb(); 1004 1005 memset(status, 0, sizeof(*status)); 1006 1007 status->signal = -rxd->rssi; 1008 *noise = -rxd->noise_floor; 1009 1010 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) { 1011 status->encoding = RX_ENC_HT; 1012 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ) 1013 status->bw = RATE_INFO_BW_40; 1014 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate); 1015 } else { 1016 int i; 1017 1018 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { 1019 if (mwl8k_rates_24[i].hw_value == rxd->rate) { 1020 status->rate_idx = i; 1021 break; 1022 } 1023 } 1024 } 1025 1026 if (rxd->channel > 14) { 1027 status->band = NL80211_BAND_5GHZ; 1028 if (!(status->encoding == RX_ENC_HT) && 1029 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1030 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1031 } else { 1032 status->band = NL80211_BAND_2GHZ; 1033 } 1034 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1035 status->band); 1036 1037 *qos = rxd->qos_control; 1038 1039 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) && 1040 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) && 1041 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) 1042 status->flag |= RX_FLAG_MMIC_ERROR; 1043 1044 return le16_to_cpu(rxd->pkt_len); 1045 } 1046 1047 static struct rxd_ops rxd_ap_ops = { 1048 .rxd_size = sizeof(struct mwl8k_rxd_ap), 1049 .rxd_init = mwl8k_rxd_ap_init, 1050 .rxd_refill = mwl8k_rxd_ap_refill, 1051 .rxd_process = mwl8k_rxd_ap_process, 1052 }; 1053 1054 /* 1055 * Packet reception for STA firmware. 1056 */ 1057 struct mwl8k_rxd_sta { 1058 __le16 pkt_len; 1059 __u8 link_quality; 1060 __u8 noise_level; 1061 __le32 pkt_phys_addr; 1062 __le32 next_rxd_phys_addr; 1063 __le16 qos_control; 1064 __le16 rate_info; 1065 __le32 pad0[4]; 1066 __u8 rssi; 1067 __u8 channel; 1068 __le16 pad1; 1069 __u8 rx_ctrl; 1070 __u8 rx_status; 1071 __u8 pad2[2]; 1072 } __packed; 1073 1074 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 1075 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) 1076 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) 1077 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004 1078 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 1079 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 1080 1081 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 1082 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 1083 /* ICV=0 or MIC=1 */ 1084 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 1085 /* Key is uploaded only in failure case */ 1086 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 1087 1088 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) 1089 { 1090 struct mwl8k_rxd_sta *rxd = _rxd; 1091 1092 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); 1093 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; 1094 } 1095 1096 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) 1097 { 1098 struct mwl8k_rxd_sta *rxd = _rxd; 1099 1100 rxd->pkt_len = cpu_to_le16(len); 1101 rxd->pkt_phys_addr = cpu_to_le32(addr); 1102 wmb(); 1103 rxd->rx_ctrl = 0; 1104 } 1105 1106 static int 1107 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, 1108 __le16 *qos, s8 *noise) 1109 { 1110 struct mwl8k_rxd_sta *rxd = _rxd; 1111 u16 rate_info; 1112 1113 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) 1114 return -1; 1115 rmb(); 1116 1117 rate_info = le16_to_cpu(rxd->rate_info); 1118 1119 memset(status, 0, sizeof(*status)); 1120 1121 status->signal = -rxd->rssi; 1122 *noise = -rxd->noise_level; 1123 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); 1124 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); 1125 1126 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) 1127 status->enc_flags |= RX_ENC_FLAG_SHORTPRE; 1128 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) 1129 status->bw = RATE_INFO_BW_40; 1130 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) 1131 status->enc_flags |= RX_ENC_FLAG_SHORT_GI; 1132 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) 1133 status->encoding = RX_ENC_HT; 1134 1135 if (rxd->channel > 14) { 1136 status->band = NL80211_BAND_5GHZ; 1137 if (!(status->encoding == RX_ENC_HT) && 1138 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) 1139 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; 1140 } else { 1141 status->band = NL80211_BAND_2GHZ; 1142 } 1143 status->freq = ieee80211_channel_to_frequency(rxd->channel, 1144 status->band); 1145 1146 *qos = rxd->qos_control; 1147 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && 1148 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) 1149 status->flag |= RX_FLAG_MMIC_ERROR; 1150 1151 return le16_to_cpu(rxd->pkt_len); 1152 } 1153 1154 static struct rxd_ops rxd_sta_ops = { 1155 .rxd_size = sizeof(struct mwl8k_rxd_sta), 1156 .rxd_init = mwl8k_rxd_sta_init, 1157 .rxd_refill = mwl8k_rxd_sta_refill, 1158 .rxd_process = mwl8k_rxd_sta_process, 1159 }; 1160 1161 1162 #define MWL8K_RX_DESCS 256 1163 #define MWL8K_RX_MAXSZ 3800 1164 1165 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) 1166 { 1167 struct mwl8k_priv *priv = hw->priv; 1168 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1169 int size; 1170 int i; 1171 1172 rxq->rxd_count = 0; 1173 rxq->head = 0; 1174 rxq->tail = 0; 1175 1176 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; 1177 1178 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma, 1179 GFP_KERNEL); 1180 if (rxq->rxd == NULL) { 1181 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); 1182 return -ENOMEM; 1183 } 1184 1185 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); 1186 if (rxq->buf == NULL) { 1187 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd, 1188 rxq->rxd_dma); 1189 return -ENOMEM; 1190 } 1191 1192 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1193 int desc_size; 1194 void *rxd; 1195 int nexti; 1196 dma_addr_t next_dma_addr; 1197 1198 desc_size = priv->rxd_ops->rxd_size; 1199 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); 1200 1201 nexti = i + 1; 1202 if (nexti == MWL8K_RX_DESCS) 1203 nexti = 0; 1204 next_dma_addr = rxq->rxd_dma + (nexti * desc_size); 1205 1206 priv->rxd_ops->rxd_init(rxd, next_dma_addr); 1207 } 1208 1209 return 0; 1210 } 1211 1212 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) 1213 { 1214 struct mwl8k_priv *priv = hw->priv; 1215 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1216 int refilled = 0; 1217 1218 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { 1219 struct sk_buff *skb; 1220 dma_addr_t addr; 1221 int rx; 1222 void *rxd; 1223 1224 skb = dev_alloc_skb(MWL8K_RX_MAXSZ); 1225 if (skb == NULL) 1226 break; 1227 1228 addr = dma_map_single(&priv->pdev->dev, skb->data, 1229 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1230 if (dma_mapping_error(&priv->pdev->dev, addr)) { 1231 kfree_skb(skb); 1232 break; 1233 } 1234 1235 rxq->rxd_count++; 1236 rx = rxq->tail++; 1237 if (rxq->tail == MWL8K_RX_DESCS) 1238 rxq->tail = 0; 1239 rxq->buf[rx].skb = skb; 1240 dma_unmap_addr_set(&rxq->buf[rx], dma, addr); 1241 1242 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); 1243 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); 1244 1245 refilled++; 1246 } 1247 1248 return refilled; 1249 } 1250 1251 /* Must be called only when the card's reception is completely halted */ 1252 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) 1253 { 1254 struct mwl8k_priv *priv = hw->priv; 1255 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1256 int i; 1257 1258 if (rxq->rxd == NULL) 1259 return; 1260 1261 for (i = 0; i < MWL8K_RX_DESCS; i++) { 1262 if (rxq->buf[i].skb != NULL) { 1263 dma_unmap_single(&priv->pdev->dev, 1264 dma_unmap_addr(&rxq->buf[i], dma), 1265 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1266 dma_unmap_addr_set(&rxq->buf[i], dma, 0); 1267 1268 kfree_skb(rxq->buf[i].skb); 1269 rxq->buf[i].skb = NULL; 1270 } 1271 } 1272 1273 kfree(rxq->buf); 1274 rxq->buf = NULL; 1275 1276 dma_free_coherent(&priv->pdev->dev, 1277 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd, 1278 rxq->rxd_dma); 1279 rxq->rxd = NULL; 1280 } 1281 1282 1283 /* 1284 * Scan a list of BSSIDs to process for finalize join. 1285 * Allows for extension to process multiple BSSIDs. 1286 */ 1287 static inline int 1288 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) 1289 { 1290 return priv->capture_beacon && 1291 ieee80211_is_beacon(wh->frame_control) && 1292 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid); 1293 } 1294 1295 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, 1296 struct sk_buff *skb) 1297 { 1298 struct mwl8k_priv *priv = hw->priv; 1299 1300 priv->capture_beacon = false; 1301 eth_zero_addr(priv->capture_bssid); 1302 1303 /* 1304 * Use GFP_ATOMIC as rxq_process is called from 1305 * the primary interrupt handler, memory allocation call 1306 * must not sleep. 1307 */ 1308 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); 1309 if (priv->beacon_skb != NULL) 1310 ieee80211_queue_work(hw, &priv->finalize_join_worker); 1311 } 1312 1313 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, 1314 u8 *bssid) 1315 { 1316 struct mwl8k_vif *mwl8k_vif; 1317 1318 list_for_each_entry(mwl8k_vif, 1319 vif_list, list) { 1320 if (memcmp(bssid, mwl8k_vif->bssid, 1321 ETH_ALEN) == 0) 1322 return mwl8k_vif; 1323 } 1324 1325 return NULL; 1326 } 1327 1328 static int rxq_process(struct ieee80211_hw *hw, int index, int limit) 1329 { 1330 struct mwl8k_priv *priv = hw->priv; 1331 struct mwl8k_vif *mwl8k_vif = NULL; 1332 struct mwl8k_rx_queue *rxq = priv->rxq + index; 1333 int processed; 1334 1335 processed = 0; 1336 while (rxq->rxd_count && limit--) { 1337 struct sk_buff *skb; 1338 void *rxd; 1339 int pkt_len; 1340 struct ieee80211_rx_status status; 1341 struct ieee80211_hdr *wh; 1342 __le16 qos; 1343 1344 skb = rxq->buf[rxq->head].skb; 1345 if (skb == NULL) 1346 break; 1347 1348 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); 1349 1350 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, 1351 &priv->noise); 1352 if (pkt_len < 0) 1353 break; 1354 1355 rxq->buf[rxq->head].skb = NULL; 1356 1357 dma_unmap_single(&priv->pdev->dev, 1358 dma_unmap_addr(&rxq->buf[rxq->head], dma), 1359 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); 1360 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); 1361 1362 rxq->head++; 1363 if (rxq->head == MWL8K_RX_DESCS) 1364 rxq->head = 0; 1365 1366 rxq->rxd_count--; 1367 1368 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1369 1370 /* 1371 * Check for a pending join operation. Save a 1372 * copy of the beacon and schedule a tasklet to 1373 * send a FINALIZE_JOIN command to the firmware. 1374 */ 1375 if (mwl8k_capture_bssid(priv, (void *)skb->data)) 1376 mwl8k_save_beacon(hw, skb); 1377 1378 if (ieee80211_has_protected(wh->frame_control)) { 1379 1380 /* Check if hw crypto has been enabled for 1381 * this bss. If yes, set the status flags 1382 * accordingly 1383 */ 1384 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, 1385 wh->addr1); 1386 1387 if (mwl8k_vif != NULL && 1388 mwl8k_vif->is_hw_crypto_enabled) { 1389 /* 1390 * When MMIC ERROR is encountered 1391 * by the firmware, payload is 1392 * dropped and only 32 bytes of 1393 * mwl8k Firmware header is sent 1394 * to the host. 1395 * 1396 * We need to add four bytes of 1397 * key information. In it 1398 * MAC80211 expects keyidx set to 1399 * 0 for triggering Counter 1400 * Measure of MMIC failure. 1401 */ 1402 if (status.flag & RX_FLAG_MMIC_ERROR) { 1403 struct mwl8k_dma_data *tr; 1404 tr = (struct mwl8k_dma_data *)skb->data; 1405 memset((void *)&(tr->data), 0, 4); 1406 pkt_len += 4; 1407 } 1408 1409 if (!ieee80211_is_auth(wh->frame_control)) 1410 status.flag |= RX_FLAG_IV_STRIPPED | 1411 RX_FLAG_DECRYPTED | 1412 RX_FLAG_MMIC_STRIPPED; 1413 } 1414 } 1415 1416 skb_put(skb, pkt_len); 1417 mwl8k_remove_dma_header(skb, qos); 1418 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); 1419 ieee80211_rx_irqsafe(hw, skb); 1420 1421 processed++; 1422 } 1423 1424 return processed; 1425 } 1426 1427 1428 /* 1429 * Packet transmission. 1430 */ 1431 1432 #define MWL8K_TXD_STATUS_OK 0x00000001 1433 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 1434 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 1435 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 1436 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 1437 1438 #define MWL8K_QOS_QLEN_UNSPEC 0xff00 1439 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060 1440 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 1441 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 1442 #define MWL8K_QOS_EOSP 0x0010 1443 1444 struct mwl8k_tx_desc { 1445 __le32 status; 1446 __u8 data_rate; 1447 __u8 tx_priority; 1448 __le16 qos_control; 1449 __le32 pkt_phys_addr; 1450 __le16 pkt_len; 1451 __u8 dest_MAC_addr[ETH_ALEN]; 1452 __le32 next_txd_phys_addr; 1453 __le32 timestamp; 1454 __le16 rate_info; 1455 __u8 peer_id; 1456 __u8 tx_frag_cnt; 1457 } __packed; 1458 1459 #define MWL8K_TX_DESCS 128 1460 1461 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) 1462 { 1463 struct mwl8k_priv *priv = hw->priv; 1464 struct mwl8k_tx_queue *txq = priv->txq + index; 1465 int size; 1466 int i; 1467 1468 txq->len = 0; 1469 txq->head = 0; 1470 txq->tail = 0; 1471 1472 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); 1473 1474 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma, 1475 GFP_KERNEL); 1476 if (txq->txd == NULL) { 1477 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); 1478 return -ENOMEM; 1479 } 1480 1481 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); 1482 if (txq->skb == NULL) { 1483 dma_free_coherent(&priv->pdev->dev, size, txq->txd, 1484 txq->txd_dma); 1485 txq->txd = NULL; 1486 return -ENOMEM; 1487 } 1488 1489 for (i = 0; i < MWL8K_TX_DESCS; i++) { 1490 struct mwl8k_tx_desc *tx_desc; 1491 int nexti; 1492 1493 tx_desc = txq->txd + i; 1494 nexti = (i + 1) % MWL8K_TX_DESCS; 1495 1496 tx_desc->status = 0; 1497 tx_desc->next_txd_phys_addr = 1498 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); 1499 } 1500 1501 return 0; 1502 } 1503 1504 static inline void mwl8k_tx_start(struct mwl8k_priv *priv) 1505 { 1506 iowrite32(MWL8K_H2A_INT_PPA_READY, 1507 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1508 iowrite32(MWL8K_H2A_INT_DUMMY, 1509 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 1510 ioread32(priv->regs + MWL8K_HIU_INT_CODE); 1511 } 1512 1513 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) 1514 { 1515 struct mwl8k_priv *priv = hw->priv; 1516 int i; 1517 1518 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 1519 struct mwl8k_tx_queue *txq = priv->txq + i; 1520 int fw_owned = 0; 1521 int drv_owned = 0; 1522 int unused = 0; 1523 int desc; 1524 1525 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { 1526 struct mwl8k_tx_desc *tx_desc = txq->txd + desc; 1527 u32 status; 1528 1529 status = le32_to_cpu(tx_desc->status); 1530 if (status & MWL8K_TXD_STATUS_FW_OWNED) 1531 fw_owned++; 1532 else 1533 drv_owned++; 1534 1535 if (tx_desc->pkt_len == 0) 1536 unused++; 1537 } 1538 1539 wiphy_err(hw->wiphy, 1540 "txq[%d] len=%d head=%d tail=%d " 1541 "fw_owned=%d drv_owned=%d unused=%d\n", 1542 i, 1543 txq->len, txq->head, txq->tail, 1544 fw_owned, drv_owned, unused); 1545 } 1546 } 1547 1548 /* 1549 * Must be called with priv->fw_mutex held and tx queues stopped. 1550 */ 1551 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000 1552 1553 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) 1554 { 1555 struct mwl8k_priv *priv = hw->priv; 1556 DECLARE_COMPLETION_ONSTACK(tx_wait); 1557 int retry; 1558 int rc; 1559 1560 might_sleep(); 1561 1562 /* Since fw restart is in progress, allow only the firmware 1563 * commands from the restart code and block the other 1564 * commands since they are going to fail in any case since 1565 * the firmware has crashed 1566 */ 1567 if (priv->hw_restart_in_progress) { 1568 if (priv->hw_restart_owner == current) 1569 return 0; 1570 else 1571 return -EBUSY; 1572 } 1573 1574 if (atomic_read(&priv->watchdog_event_pending)) 1575 return 0; 1576 1577 /* 1578 * The TX queues are stopped at this point, so this test 1579 * doesn't need to take ->tx_lock. 1580 */ 1581 if (!priv->pending_tx_pkts) 1582 return 0; 1583 1584 retry = 1; 1585 rc = 0; 1586 1587 spin_lock_bh(&priv->tx_lock); 1588 priv->tx_wait = &tx_wait; 1589 while (!rc) { 1590 int oldcount; 1591 unsigned long timeout; 1592 1593 oldcount = priv->pending_tx_pkts; 1594 1595 spin_unlock_bh(&priv->tx_lock); 1596 timeout = wait_for_completion_timeout(&tx_wait, 1597 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); 1598 1599 if (atomic_read(&priv->watchdog_event_pending)) { 1600 spin_lock_bh(&priv->tx_lock); 1601 priv->tx_wait = NULL; 1602 spin_unlock_bh(&priv->tx_lock); 1603 return 0; 1604 } 1605 1606 spin_lock_bh(&priv->tx_lock); 1607 1608 if (timeout || !priv->pending_tx_pkts) { 1609 WARN_ON(priv->pending_tx_pkts); 1610 if (retry) 1611 wiphy_notice(hw->wiphy, "tx rings drained\n"); 1612 break; 1613 } 1614 1615 if (retry) { 1616 mwl8k_tx_start(priv); 1617 retry = 0; 1618 continue; 1619 } 1620 1621 if (priv->pending_tx_pkts < oldcount) { 1622 wiphy_notice(hw->wiphy, 1623 "waiting for tx rings to drain (%d -> %d pkts)\n", 1624 oldcount, priv->pending_tx_pkts); 1625 retry = 1; 1626 continue; 1627 } 1628 1629 priv->tx_wait = NULL; 1630 1631 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", 1632 MWL8K_TX_WAIT_TIMEOUT_MS); 1633 mwl8k_dump_tx_rings(hw); 1634 priv->hw_restart_in_progress = true; 1635 ieee80211_queue_work(hw, &priv->fw_reload); 1636 1637 rc = -ETIMEDOUT; 1638 } 1639 priv->tx_wait = NULL; 1640 spin_unlock_bh(&priv->tx_lock); 1641 1642 return rc; 1643 } 1644 1645 #define MWL8K_TXD_SUCCESS(status) \ 1646 ((status) & (MWL8K_TXD_STATUS_OK | \ 1647 MWL8K_TXD_STATUS_OK_RETRY | \ 1648 MWL8K_TXD_STATUS_OK_MORE_RETRY)) 1649 1650 static int mwl8k_tid_queue_mapping(u8 tid) 1651 { 1652 BUG_ON(tid > 7); 1653 1654 switch (tid) { 1655 case 0: 1656 case 3: 1657 return IEEE80211_AC_BE; 1658 case 1: 1659 case 2: 1660 return IEEE80211_AC_BK; 1661 case 4: 1662 case 5: 1663 return IEEE80211_AC_VI; 1664 case 6: 1665 case 7: 1666 return IEEE80211_AC_VO; 1667 default: 1668 return -1; 1669 } 1670 } 1671 1672 /* The firmware will fill in the rate information 1673 * for each packet that gets queued in the hardware 1674 * and these macros will interpret that info. 1675 */ 1676 1677 #define RI_FORMAT(a) (a & 0x0001) 1678 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) 1679 1680 static int 1681 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) 1682 { 1683 struct mwl8k_priv *priv = hw->priv; 1684 struct mwl8k_tx_queue *txq = priv->txq + index; 1685 int processed; 1686 1687 processed = 0; 1688 while (txq->len > 0 && limit--) { 1689 int tx; 1690 struct mwl8k_tx_desc *tx_desc; 1691 unsigned long addr; 1692 int size; 1693 struct sk_buff *skb; 1694 struct ieee80211_tx_info *info; 1695 u32 status; 1696 struct ieee80211_sta *sta; 1697 struct mwl8k_sta *sta_info = NULL; 1698 u16 rate_info; 1699 struct ieee80211_hdr *wh; 1700 1701 tx = txq->head; 1702 tx_desc = txq->txd + tx; 1703 1704 status = le32_to_cpu(tx_desc->status); 1705 1706 if (status & MWL8K_TXD_STATUS_FW_OWNED) { 1707 if (!force) 1708 break; 1709 tx_desc->status &= 1710 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); 1711 } 1712 1713 txq->head = (tx + 1) % MWL8K_TX_DESCS; 1714 BUG_ON(txq->len == 0); 1715 txq->len--; 1716 priv->pending_tx_pkts--; 1717 1718 addr = le32_to_cpu(tx_desc->pkt_phys_addr); 1719 size = le16_to_cpu(tx_desc->pkt_len); 1720 skb = txq->skb[tx]; 1721 txq->skb[tx] = NULL; 1722 1723 BUG_ON(skb == NULL); 1724 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE); 1725 1726 mwl8k_remove_dma_header(skb, tx_desc->qos_control); 1727 1728 wh = (struct ieee80211_hdr *) skb->data; 1729 1730 /* Mark descriptor as unused */ 1731 tx_desc->pkt_phys_addr = 0; 1732 tx_desc->pkt_len = 0; 1733 1734 info = IEEE80211_SKB_CB(skb); 1735 if (ieee80211_is_data(wh->frame_control)) { 1736 rcu_read_lock(); 1737 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1, 1738 wh->addr2); 1739 if (sta) { 1740 sta_info = MWL8K_STA(sta); 1741 BUG_ON(sta_info == NULL); 1742 rate_info = le16_to_cpu(tx_desc->rate_info); 1743 /* If rate is < 6.5 Mpbs for an ht station 1744 * do not form an ampdu. If the station is a 1745 * legacy station (format = 0), do not form an 1746 * ampdu 1747 */ 1748 if (RI_RATE_ID_MCS(rate_info) < 1 || 1749 RI_FORMAT(rate_info) == 0) { 1750 sta_info->is_ampdu_allowed = false; 1751 } else { 1752 sta_info->is_ampdu_allowed = true; 1753 } 1754 } 1755 rcu_read_unlock(); 1756 } 1757 1758 ieee80211_tx_info_clear_status(info); 1759 1760 /* Rate control is happening in the firmware. 1761 * Ensure no tx rate is being reported. 1762 */ 1763 info->status.rates[0].idx = -1; 1764 info->status.rates[0].count = 1; 1765 1766 if (MWL8K_TXD_SUCCESS(status)) 1767 info->flags |= IEEE80211_TX_STAT_ACK; 1768 1769 ieee80211_tx_status_irqsafe(hw, skb); 1770 1771 processed++; 1772 } 1773 1774 return processed; 1775 } 1776 1777 /* must be called only when the card's transmit is completely halted */ 1778 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) 1779 { 1780 struct mwl8k_priv *priv = hw->priv; 1781 struct mwl8k_tx_queue *txq = priv->txq + index; 1782 1783 if (txq->txd == NULL) 1784 return; 1785 1786 mwl8k_txq_reclaim(hw, index, INT_MAX, 1); 1787 1788 kfree(txq->skb); 1789 txq->skb = NULL; 1790 1791 dma_free_coherent(&priv->pdev->dev, 1792 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), 1793 txq->txd, txq->txd_dma); 1794 txq->txd = NULL; 1795 } 1796 1797 /* caller must hold priv->stream_lock when calling the stream functions */ 1798 static struct mwl8k_ampdu_stream * 1799 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) 1800 { 1801 struct mwl8k_ampdu_stream *stream; 1802 struct mwl8k_priv *priv = hw->priv; 1803 int i; 1804 1805 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1806 stream = &priv->ampdu[i]; 1807 if (stream->state == AMPDU_NO_STREAM) { 1808 stream->sta = sta; 1809 stream->state = AMPDU_STREAM_NEW; 1810 stream->tid = tid; 1811 stream->idx = i; 1812 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", 1813 sta->addr, tid); 1814 return stream; 1815 } 1816 } 1817 return NULL; 1818 } 1819 1820 static int 1821 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1822 { 1823 int ret; 1824 1825 /* if the stream has already been started, don't start it again */ 1826 if (stream->state != AMPDU_STREAM_NEW) 1827 return 0; 1828 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); 1829 if (ret) 1830 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " 1831 "%d\n", stream->sta->addr, stream->tid, ret); 1832 else 1833 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", 1834 stream->sta->addr, stream->tid); 1835 return ret; 1836 } 1837 1838 static void 1839 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) 1840 { 1841 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, 1842 stream->tid); 1843 memset(stream, 0, sizeof(*stream)); 1844 } 1845 1846 static struct mwl8k_ampdu_stream * 1847 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) 1848 { 1849 struct mwl8k_priv *priv = hw->priv; 1850 int i; 1851 1852 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 1853 struct mwl8k_ampdu_stream *stream; 1854 stream = &priv->ampdu[i]; 1855 if (stream->state == AMPDU_NO_STREAM) 1856 continue; 1857 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && 1858 stream->tid == tid) 1859 return stream; 1860 } 1861 return NULL; 1862 } 1863 1864 #define MWL8K_AMPDU_PACKET_THRESHOLD 64 1865 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) 1866 { 1867 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1868 struct tx_traffic_info *tx_stats; 1869 1870 BUG_ON(tid >= MWL8K_MAX_TID); 1871 tx_stats = &sta_info->tx_stats[tid]; 1872 1873 return sta_info->is_ampdu_allowed && 1874 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; 1875 } 1876 1877 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) 1878 { 1879 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 1880 struct tx_traffic_info *tx_stats; 1881 1882 BUG_ON(tid >= MWL8K_MAX_TID); 1883 tx_stats = &sta_info->tx_stats[tid]; 1884 1885 if (tx_stats->start_time == 0) 1886 tx_stats->start_time = jiffies; 1887 1888 /* reset the packet count after each second elapses. If the number of 1889 * packets ever exceeds the ampdu_min_traffic threshold, we will allow 1890 * an ampdu stream to be started. 1891 */ 1892 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) { 1893 tx_stats->pkts = 0; 1894 tx_stats->start_time = 0; 1895 } else 1896 tx_stats->pkts++; 1897 } 1898 1899 /* The hardware ampdu queues start from 5. 1900 * txpriorities for ampdu queues are 1901 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest 1902 * and queue 3 is lowest (queue 4 is reserved) 1903 */ 1904 #define BA_QUEUE 5 1905 1906 static void 1907 mwl8k_txq_xmit(struct ieee80211_hw *hw, 1908 int index, 1909 struct ieee80211_sta *sta, 1910 struct sk_buff *skb) 1911 { 1912 struct mwl8k_priv *priv = hw->priv; 1913 struct ieee80211_tx_info *tx_info; 1914 struct mwl8k_vif *mwl8k_vif; 1915 struct ieee80211_hdr *wh; 1916 struct mwl8k_tx_queue *txq; 1917 struct mwl8k_tx_desc *tx; 1918 dma_addr_t dma; 1919 u32 txstatus; 1920 u8 txdatarate; 1921 u16 qos; 1922 int txpriority; 1923 u8 tid = 0; 1924 struct mwl8k_ampdu_stream *stream = NULL; 1925 bool start_ba_session = false; 1926 bool mgmtframe = false; 1927 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; 1928 bool eapol_frame = false; 1929 1930 wh = (struct ieee80211_hdr *)skb->data; 1931 if (ieee80211_is_data_qos(wh->frame_control)) 1932 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); 1933 else 1934 qos = 0; 1935 1936 if (skb->protocol == cpu_to_be16(ETH_P_PAE)) 1937 eapol_frame = true; 1938 1939 if (ieee80211_is_mgmt(wh->frame_control)) 1940 mgmtframe = true; 1941 1942 if (priv->ap_fw) 1943 mwl8k_encapsulate_tx_frame(priv, skb); 1944 else 1945 mwl8k_add_dma_header(priv, skb, 0, 0); 1946 1947 wh = &((struct mwl8k_dma_data *)skb->data)->wh; 1948 1949 tx_info = IEEE80211_SKB_CB(skb); 1950 mwl8k_vif = MWL8K_VIF(tx_info->control.vif); 1951 1952 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { 1953 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); 1954 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); 1955 mwl8k_vif->seqno += 0x10; 1956 } 1957 1958 /* Setup firmware control bit fields for each frame type. */ 1959 txstatus = 0; 1960 txdatarate = 0; 1961 if (ieee80211_is_mgmt(wh->frame_control) || 1962 ieee80211_is_ctl(wh->frame_control)) { 1963 txdatarate = 0; 1964 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; 1965 } else if (ieee80211_is_data(wh->frame_control)) { 1966 txdatarate = 1; 1967 if (is_multicast_ether_addr(wh->addr1)) 1968 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; 1969 1970 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 1971 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) 1972 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; 1973 else 1974 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 1975 } 1976 1977 /* Queue ADDBA request in the respective data queue. While setting up 1978 * the ampdu stream, mac80211 queues further packets for that 1979 * particular ra/tid pair. However, packets piled up in the hardware 1980 * for that ra/tid pair will still go out. ADDBA request and the 1981 * related data packets going out from different queues asynchronously 1982 * will cause a shift in the receiver window which might result in 1983 * ampdu packets getting dropped at the receiver after the stream has 1984 * been setup. 1985 */ 1986 if (unlikely(ieee80211_is_action(wh->frame_control) && 1987 mgmt->u.action.category == WLAN_CATEGORY_BACK && 1988 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && 1989 priv->ap_fw)) { 1990 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); 1991 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; 1992 index = mwl8k_tid_queue_mapping(tid); 1993 } 1994 1995 txpriority = index; 1996 1997 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame && 1998 ieee80211_is_data_qos(wh->frame_control)) { 1999 tid = qos & 0xf; 2000 mwl8k_tx_count_packet(sta, tid); 2001 spin_lock(&priv->stream_lock); 2002 stream = mwl8k_lookup_stream(hw, sta->addr, tid); 2003 if (stream != NULL) { 2004 if (stream->state == AMPDU_STREAM_ACTIVE) { 2005 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK)); 2006 txpriority = (BA_QUEUE + stream->idx) % 2007 TOTAL_HW_TX_QUEUES; 2008 if (stream->idx <= 1) 2009 index = stream->idx + 2010 MWL8K_TX_WMM_QUEUES; 2011 2012 } else if (stream->state == AMPDU_STREAM_NEW) { 2013 /* We get here if the driver sends us packets 2014 * after we've initiated a stream, but before 2015 * our ampdu_action routine has been called 2016 * with IEEE80211_AMPDU_TX_START to get the SSN 2017 * for the ADDBA request. So this packet can 2018 * go out with no risk of sequence number 2019 * mismatch. No special handling is required. 2020 */ 2021 } else { 2022 /* Drop packets that would go out after the 2023 * ADDBA request was sent but before the ADDBA 2024 * response is received. If we don't do this, 2025 * the recipient would probably receive it 2026 * after the ADDBA request with SSN 0. This 2027 * will cause the recipient's BA receive window 2028 * to shift, which would cause the subsequent 2029 * packets in the BA stream to be discarded. 2030 * mac80211 queues our packets for us in this 2031 * case, so this is really just a safety check. 2032 */ 2033 wiphy_warn(hw->wiphy, 2034 "Cannot send packet while ADDBA " 2035 "dialog is underway.\n"); 2036 spin_unlock(&priv->stream_lock); 2037 dev_kfree_skb(skb); 2038 return; 2039 } 2040 } else { 2041 /* Defer calling mwl8k_start_stream so that the current 2042 * skb can go out before the ADDBA request. This 2043 * prevents sequence number mismatch at the recepient 2044 * as described above. 2045 */ 2046 if (mwl8k_ampdu_allowed(sta, tid)) { 2047 stream = mwl8k_add_stream(hw, sta, tid); 2048 if (stream != NULL) 2049 start_ba_session = true; 2050 } 2051 } 2052 spin_unlock(&priv->stream_lock); 2053 } else { 2054 qos &= ~MWL8K_QOS_ACK_POLICY_MASK; 2055 qos |= MWL8K_QOS_ACK_POLICY_NORMAL; 2056 } 2057 2058 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len, 2059 DMA_TO_DEVICE); 2060 2061 if (dma_mapping_error(&priv->pdev->dev, dma)) { 2062 wiphy_debug(hw->wiphy, 2063 "failed to dma map skb, dropping TX frame.\n"); 2064 if (start_ba_session) { 2065 spin_lock(&priv->stream_lock); 2066 mwl8k_remove_stream(hw, stream); 2067 spin_unlock(&priv->stream_lock); 2068 } 2069 dev_kfree_skb(skb); 2070 return; 2071 } 2072 2073 spin_lock_bh(&priv->tx_lock); 2074 2075 txq = priv->txq + index; 2076 2077 /* Mgmt frames that go out frequently are probe 2078 * responses. Other mgmt frames got out relatively 2079 * infrequently. Hence reserve 2 buffers so that 2080 * other mgmt frames do not get dropped due to an 2081 * already queued probe response in one of the 2082 * reserved buffers. 2083 */ 2084 2085 if (txq->len >= MWL8K_TX_DESCS - 2) { 2086 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) { 2087 if (start_ba_session) { 2088 spin_lock(&priv->stream_lock); 2089 mwl8k_remove_stream(hw, stream); 2090 spin_unlock(&priv->stream_lock); 2091 } 2092 mwl8k_tx_start(priv); 2093 spin_unlock_bh(&priv->tx_lock); 2094 dma_unmap_single(&priv->pdev->dev, dma, skb->len, 2095 DMA_TO_DEVICE); 2096 dev_kfree_skb(skb); 2097 return; 2098 } 2099 } 2100 2101 BUG_ON(txq->skb[txq->tail] != NULL); 2102 txq->skb[txq->tail] = skb; 2103 2104 tx = txq->txd + txq->tail; 2105 tx->data_rate = txdatarate; 2106 tx->tx_priority = txpriority; 2107 tx->qos_control = cpu_to_le16(qos); 2108 tx->pkt_phys_addr = cpu_to_le32(dma); 2109 tx->pkt_len = cpu_to_le16(skb->len); 2110 tx->rate_info = 0; 2111 if (!priv->ap_fw && sta != NULL) 2112 tx->peer_id = MWL8K_STA(sta)->peer_id; 2113 else 2114 tx->peer_id = 0; 2115 2116 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame) 2117 tx->timestamp = cpu_to_le32(ioread32(priv->regs + 2118 MWL8K_HW_TIMER_REGISTER)); 2119 else 2120 tx->timestamp = 0; 2121 2122 wmb(); 2123 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); 2124 2125 txq->len++; 2126 priv->pending_tx_pkts++; 2127 2128 txq->tail++; 2129 if (txq->tail == MWL8K_TX_DESCS) 2130 txq->tail = 0; 2131 2132 mwl8k_tx_start(priv); 2133 2134 spin_unlock_bh(&priv->tx_lock); 2135 2136 /* Initiate the ampdu session here */ 2137 if (start_ba_session) { 2138 spin_lock(&priv->stream_lock); 2139 if (mwl8k_start_stream(hw, stream)) 2140 mwl8k_remove_stream(hw, stream); 2141 spin_unlock(&priv->stream_lock); 2142 } 2143 } 2144 2145 2146 /* 2147 * Firmware access. 2148 * 2149 * We have the following requirements for issuing firmware commands: 2150 * - Some commands require that the packet transmit path is idle when 2151 * the command is issued. (For simplicity, we'll just quiesce the 2152 * transmit path for every command.) 2153 * - There are certain sequences of commands that need to be issued to 2154 * the hardware sequentially, with no other intervening commands. 2155 * 2156 * This leads to an implementation of a "firmware lock" as a mutex that 2157 * can be taken recursively, and which is taken by both the low-level 2158 * command submission function (mwl8k_post_cmd) as well as any users of 2159 * that function that require issuing of an atomic sequence of commands, 2160 * and quiesces the transmit path whenever it's taken. 2161 */ 2162 static int mwl8k_fw_lock(struct ieee80211_hw *hw) 2163 { 2164 struct mwl8k_priv *priv = hw->priv; 2165 2166 if (priv->fw_mutex_owner != current) { 2167 int rc; 2168 2169 mutex_lock(&priv->fw_mutex); 2170 ieee80211_stop_queues(hw); 2171 2172 rc = mwl8k_tx_wait_empty(hw); 2173 if (rc) { 2174 if (!priv->hw_restart_in_progress) 2175 ieee80211_wake_queues(hw); 2176 2177 mutex_unlock(&priv->fw_mutex); 2178 2179 return rc; 2180 } 2181 2182 priv->fw_mutex_owner = current; 2183 } 2184 2185 priv->fw_mutex_depth++; 2186 2187 return 0; 2188 } 2189 2190 static void mwl8k_fw_unlock(struct ieee80211_hw *hw) 2191 { 2192 struct mwl8k_priv *priv = hw->priv; 2193 2194 if (!--priv->fw_mutex_depth) { 2195 if (!priv->hw_restart_in_progress) 2196 ieee80211_wake_queues(hw); 2197 2198 priv->fw_mutex_owner = NULL; 2199 mutex_unlock(&priv->fw_mutex); 2200 } 2201 } 2202 2203 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, 2204 u32 bitmap); 2205 2206 /* 2207 * Command processing. 2208 */ 2209 2210 /* Timeout firmware commands after 10s */ 2211 #define MWL8K_CMD_TIMEOUT_MS 10000 2212 2213 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt_hdr *cmd) 2214 { 2215 DECLARE_COMPLETION_ONSTACK(cmd_wait); 2216 struct mwl8k_priv *priv = hw->priv; 2217 void __iomem *regs = priv->regs; 2218 dma_addr_t dma_addr; 2219 unsigned int dma_size; 2220 int rc; 2221 unsigned long time_left = 0; 2222 u8 buf[32]; 2223 u32 bitmap = 0; 2224 2225 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n", 2226 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid); 2227 2228 /* Before posting firmware commands that could change the hardware 2229 * characteristics, make sure that all BSSes are stopped temporary. 2230 * Enable these stopped BSSes after completion of the commands 2231 */ 2232 2233 rc = mwl8k_fw_lock(hw); 2234 if (rc) 2235 return rc; 2236 2237 if (priv->ap_fw && priv->running_bsses) { 2238 switch (le16_to_cpu(cmd->code)) { 2239 case MWL8K_CMD_SET_RF_CHANNEL: 2240 case MWL8K_CMD_RADIO_CONTROL: 2241 case MWL8K_CMD_RF_TX_POWER: 2242 case MWL8K_CMD_TX_POWER: 2243 case MWL8K_CMD_RF_ANTENNA: 2244 case MWL8K_CMD_RTS_THRESHOLD: 2245 case MWL8K_CMD_MIMO_CONFIG: 2246 bitmap = priv->running_bsses; 2247 mwl8k_enable_bsses(hw, false, bitmap); 2248 break; 2249 } 2250 } 2251 2252 cmd->result = (__force __le16) 0xffff; 2253 dma_size = le16_to_cpu(cmd->length); 2254 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size, 2255 DMA_BIDIRECTIONAL); 2256 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) { 2257 rc = -ENOMEM; 2258 goto exit; 2259 } 2260 2261 priv->hostcmd_wait = &cmd_wait; 2262 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); 2263 iowrite32(MWL8K_H2A_INT_DOORBELL, 2264 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2265 iowrite32(MWL8K_H2A_INT_DUMMY, 2266 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); 2267 2268 time_left = wait_for_completion_timeout(&cmd_wait, 2269 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); 2270 2271 priv->hostcmd_wait = NULL; 2272 2273 2274 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size, 2275 DMA_BIDIRECTIONAL); 2276 2277 if (!time_left) { 2278 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", 2279 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2280 MWL8K_CMD_TIMEOUT_MS); 2281 rc = -ETIMEDOUT; 2282 } else { 2283 int ms; 2284 2285 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(time_left); 2286 2287 rc = cmd->result ? -EINVAL : 0; 2288 if (rc) 2289 wiphy_err(hw->wiphy, "Command %s error 0x%x\n", 2290 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), 2291 le16_to_cpu(cmd->result)); 2292 else if (ms > 2000) 2293 wiphy_notice(hw->wiphy, "Command %s took %d ms\n", 2294 mwl8k_cmd_name(cmd->code, 2295 buf, sizeof(buf)), 2296 ms); 2297 } 2298 2299 exit: 2300 if (bitmap) 2301 mwl8k_enable_bsses(hw, true, bitmap); 2302 2303 mwl8k_fw_unlock(hw); 2304 2305 return rc; 2306 } 2307 2308 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, 2309 struct ieee80211_vif *vif, 2310 struct mwl8k_cmd_pkt_hdr *cmd) 2311 { 2312 if (vif != NULL) 2313 cmd->macid = MWL8K_VIF(vif)->macid; 2314 return mwl8k_post_cmd(hw, cmd); 2315 } 2316 2317 /* 2318 * Setup code shared between STA and AP firmware images. 2319 */ 2320 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) 2321 { 2322 struct mwl8k_priv *priv = hw->priv; 2323 2324 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); 2325 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); 2326 2327 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); 2328 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); 2329 2330 priv->band_24.band = NL80211_BAND_2GHZ; 2331 priv->band_24.channels = priv->channels_24; 2332 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); 2333 priv->band_24.bitrates = priv->rates_24; 2334 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); 2335 2336 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24; 2337 } 2338 2339 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) 2340 { 2341 struct mwl8k_priv *priv = hw->priv; 2342 2343 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); 2344 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); 2345 2346 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); 2347 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); 2348 2349 priv->band_50.band = NL80211_BAND_5GHZ; 2350 priv->band_50.channels = priv->channels_50; 2351 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); 2352 priv->band_50.bitrates = priv->rates_50; 2353 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); 2354 2355 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50; 2356 } 2357 2358 /* 2359 * CMD_GET_HW_SPEC (STA version). 2360 */ 2361 struct mwl8k_cmd_get_hw_spec_sta { 2362 struct mwl8k_cmd_pkt_hdr header; 2363 __u8 hw_rev; 2364 __u8 host_interface; 2365 __le16 num_mcaddrs; 2366 __u8 perm_addr[ETH_ALEN]; 2367 __le16 region_code; 2368 __le32 fw_rev; 2369 __le32 ps_cookie; 2370 __le32 caps; 2371 __u8 mcs_bitmap[16]; 2372 __le32 rx_queue_ptr; 2373 __le32 num_tx_queues; 2374 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; 2375 __le32 caps2; 2376 __le32 num_tx_desc_per_queue; 2377 __le32 total_rxd; 2378 } __packed; 2379 2380 #define MWL8K_CAP_MAX_AMSDU 0x20000000 2381 #define MWL8K_CAP_GREENFIELD 0x08000000 2382 #define MWL8K_CAP_AMPDU 0x04000000 2383 #define MWL8K_CAP_RX_STBC 0x01000000 2384 #define MWL8K_CAP_TX_STBC 0x00800000 2385 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 2386 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 2387 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 2388 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 2389 #define MWL8K_CAP_DELAY_BA 0x00003000 2390 #define MWL8K_CAP_MIMO 0x00000200 2391 #define MWL8K_CAP_40MHZ 0x00000100 2392 #define MWL8K_CAP_BAND_MASK 0x00000007 2393 #define MWL8K_CAP_5GHZ 0x00000004 2394 #define MWL8K_CAP_2GHZ4 0x00000001 2395 2396 static void 2397 mwl8k_set_ht_caps(struct ieee80211_hw *hw, 2398 struct ieee80211_supported_band *band, u32 cap) 2399 { 2400 int rx_streams; 2401 int tx_streams; 2402 2403 band->ht_cap.ht_supported = 1; 2404 2405 if (cap & MWL8K_CAP_MAX_AMSDU) 2406 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; 2407 if (cap & MWL8K_CAP_GREENFIELD) 2408 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; 2409 if (cap & MWL8K_CAP_AMPDU) { 2410 ieee80211_hw_set(hw, AMPDU_AGGREGATION); 2411 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; 2412 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; 2413 } 2414 if (cap & MWL8K_CAP_RX_STBC) 2415 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; 2416 if (cap & MWL8K_CAP_TX_STBC) 2417 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; 2418 if (cap & MWL8K_CAP_SHORTGI_40MHZ) 2419 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; 2420 if (cap & MWL8K_CAP_SHORTGI_20MHZ) 2421 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; 2422 if (cap & MWL8K_CAP_DELAY_BA) 2423 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; 2424 if (cap & MWL8K_CAP_40MHZ) 2425 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; 2426 2427 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); 2428 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); 2429 2430 band->ht_cap.mcs.rx_mask[0] = 0xff; 2431 if (rx_streams >= 2) 2432 band->ht_cap.mcs.rx_mask[1] = 0xff; 2433 if (rx_streams >= 3) 2434 band->ht_cap.mcs.rx_mask[2] = 0xff; 2435 band->ht_cap.mcs.rx_mask[4] = 0x01; 2436 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; 2437 2438 if (rx_streams != tx_streams) { 2439 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; 2440 band->ht_cap.mcs.tx_params |= (tx_streams - 1) << 2441 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; 2442 } 2443 } 2444 2445 static void 2446 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) 2447 { 2448 struct mwl8k_priv *priv = hw->priv; 2449 2450 if (priv->caps) 2451 return; 2452 2453 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { 2454 mwl8k_setup_2ghz_band(hw); 2455 if (caps & MWL8K_CAP_MIMO) 2456 mwl8k_set_ht_caps(hw, &priv->band_24, caps); 2457 } 2458 2459 if (caps & MWL8K_CAP_5GHZ) { 2460 mwl8k_setup_5ghz_band(hw); 2461 if (caps & MWL8K_CAP_MIMO) 2462 mwl8k_set_ht_caps(hw, &priv->band_50, caps); 2463 } 2464 2465 priv->caps = caps; 2466 } 2467 2468 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) 2469 { 2470 struct mwl8k_priv *priv = hw->priv; 2471 struct mwl8k_cmd_get_hw_spec_sta *cmd; 2472 int rc; 2473 int i; 2474 2475 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2476 if (cmd == NULL) 2477 return -ENOMEM; 2478 2479 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2480 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2481 2482 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2483 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2484 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2485 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2486 for (i = 0; i < mwl8k_tx_queues(priv); i++) 2487 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); 2488 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2489 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2490 2491 rc = mwl8k_post_cmd(hw, &cmd->header); 2492 2493 if (!rc) { 2494 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2495 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2496 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2497 priv->hw_rev = cmd->hw_rev; 2498 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2499 priv->ap_macids_supported = 0x00000000; 2500 priv->sta_macids_supported = 0x00000001; 2501 } 2502 2503 kfree(cmd); 2504 return rc; 2505 } 2506 2507 /* 2508 * CMD_GET_HW_SPEC (AP version). 2509 */ 2510 struct mwl8k_cmd_get_hw_spec_ap { 2511 struct mwl8k_cmd_pkt_hdr header; 2512 __u8 hw_rev; 2513 __u8 host_interface; 2514 __le16 num_wcb; 2515 __le16 num_mcaddrs; 2516 __u8 perm_addr[ETH_ALEN]; 2517 __le16 region_code; 2518 __le16 num_antenna; 2519 __le32 fw_rev; 2520 __le32 wcbbase0; 2521 __le32 rxwrptr; 2522 __le32 rxrdptr; 2523 __le32 ps_cookie; 2524 __le32 wcbbase1; 2525 __le32 wcbbase2; 2526 __le32 wcbbase3; 2527 __le32 fw_api_version; 2528 __le32 caps; 2529 __le32 num_of_ampdu_queues; 2530 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; 2531 } __packed; 2532 2533 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) 2534 { 2535 struct mwl8k_priv *priv = hw->priv; 2536 struct mwl8k_cmd_get_hw_spec_ap *cmd; 2537 int rc, i; 2538 u32 api_version; 2539 2540 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2541 if (cmd == NULL) 2542 return -ENOMEM; 2543 2544 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); 2545 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2546 2547 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); 2548 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2549 2550 rc = mwl8k_post_cmd(hw, &cmd->header); 2551 2552 if (!rc) { 2553 int off; 2554 2555 api_version = le32_to_cpu(cmd->fw_api_version); 2556 if (priv->device_info->fw_api_ap != api_version) { 2557 printk(KERN_ERR "%s: Unsupported fw API version for %s." 2558 " Expected %d got %d.\n", MWL8K_NAME, 2559 priv->device_info->part_name, 2560 priv->device_info->fw_api_ap, 2561 api_version); 2562 rc = -EINVAL; 2563 goto done; 2564 } 2565 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); 2566 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); 2567 priv->fw_rev = le32_to_cpu(cmd->fw_rev); 2568 priv->hw_rev = cmd->hw_rev; 2569 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); 2570 priv->ap_macids_supported = 0x000000ff; 2571 priv->sta_macids_supported = 0x00000100; 2572 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); 2573 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { 2574 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" 2575 " but we only support %d.\n", 2576 priv->num_ampdu_queues, 2577 MWL8K_MAX_AMPDU_QUEUES); 2578 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; 2579 } 2580 off = le32_to_cpu(cmd->rxwrptr) & 0xffff; 2581 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2582 2583 off = le32_to_cpu(cmd->rxrdptr) & 0xffff; 2584 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); 2585 2586 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; 2587 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; 2588 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; 2589 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; 2590 2591 for (i = 0; i < priv->num_ampdu_queues; i++) 2592 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = 2593 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; 2594 } 2595 2596 done: 2597 kfree(cmd); 2598 return rc; 2599 } 2600 2601 /* 2602 * CMD_SET_HW_SPEC. 2603 */ 2604 struct mwl8k_cmd_set_hw_spec { 2605 struct mwl8k_cmd_pkt_hdr header; 2606 __u8 hw_rev; 2607 __u8 host_interface; 2608 __le16 num_mcaddrs; 2609 __u8 perm_addr[ETH_ALEN]; 2610 __le16 region_code; 2611 __le32 fw_rev; 2612 __le32 ps_cookie; 2613 __le32 caps; 2614 __le32 rx_queue_ptr; 2615 __le32 num_tx_queues; 2616 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; 2617 __le32 flags; 2618 __le32 num_tx_desc_per_queue; 2619 __le32 total_rxd; 2620 } __packed; 2621 2622 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause 2623 * packets to expire 500 ms after the timestamp in the tx descriptor. That is, 2624 * the packets that are queued for more than 500ms, will be dropped in the 2625 * hardware. This helps minimizing the issues caused due to head-of-line 2626 * blocking where a slow client can hog the bandwidth and affect traffic to a 2627 * faster client. 2628 */ 2629 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 2630 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 2631 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 2632 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 2633 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 2634 2635 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) 2636 { 2637 struct mwl8k_priv *priv = hw->priv; 2638 struct mwl8k_cmd_set_hw_spec *cmd; 2639 int rc; 2640 int i; 2641 2642 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2643 if (cmd == NULL) 2644 return -ENOMEM; 2645 2646 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); 2647 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2648 2649 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); 2650 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); 2651 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); 2652 2653 /* 2654 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in 2655 * that order. Firmware has Q3 as highest priority and Q0 as lowest 2656 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the 2657 * priority is interpreted the right way in firmware. 2658 */ 2659 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 2660 int j = mwl8k_tx_queues(priv) - 1 - i; 2661 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); 2662 } 2663 2664 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | 2665 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | 2666 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | 2667 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | 2668 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); 2669 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); 2670 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); 2671 2672 rc = mwl8k_post_cmd(hw, &cmd->header); 2673 kfree(cmd); 2674 2675 return rc; 2676 } 2677 2678 /* 2679 * CMD_MAC_MULTICAST_ADR. 2680 */ 2681 struct mwl8k_cmd_mac_multicast_adr { 2682 struct mwl8k_cmd_pkt_hdr header; 2683 __le16 action; 2684 __le16 numaddr; 2685 __u8 addr[][ETH_ALEN]; 2686 }; 2687 2688 #define MWL8K_ENABLE_RX_DIRECTED 0x0001 2689 #define MWL8K_ENABLE_RX_MULTICAST 0x0002 2690 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 2691 #define MWL8K_ENABLE_RX_BROADCAST 0x0008 2692 2693 static struct mwl8k_cmd_pkt_hdr * 2694 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, 2695 struct netdev_hw_addr_list *mc_list) 2696 { 2697 struct mwl8k_priv *priv = hw->priv; 2698 struct mwl8k_cmd_mac_multicast_adr *cmd; 2699 int size; 2700 int mc_count = 0; 2701 2702 if (mc_list) 2703 mc_count = netdev_hw_addr_list_count(mc_list); 2704 2705 if (allmulti || mc_count > priv->num_mcaddrs) { 2706 allmulti = 1; 2707 mc_count = 0; 2708 } 2709 2710 size = sizeof(*cmd) + mc_count * ETH_ALEN; 2711 2712 cmd = kzalloc(size, GFP_ATOMIC); 2713 if (cmd == NULL) 2714 return NULL; 2715 2716 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); 2717 cmd->header.length = cpu_to_le16(size); 2718 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | 2719 MWL8K_ENABLE_RX_BROADCAST); 2720 2721 if (allmulti) { 2722 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); 2723 } else if (mc_count) { 2724 struct netdev_hw_addr *ha; 2725 int i = 0; 2726 2727 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); 2728 cmd->numaddr = cpu_to_le16(mc_count); 2729 netdev_hw_addr_list_for_each(ha, mc_list) { 2730 memcpy(cmd->addr[i++], ha->addr, ETH_ALEN); 2731 } 2732 } 2733 2734 return &cmd->header; 2735 } 2736 2737 /* 2738 * CMD_GET_STAT. 2739 */ 2740 struct mwl8k_cmd_get_stat { 2741 struct mwl8k_cmd_pkt_hdr header; 2742 __le32 stats[64]; 2743 } __packed; 2744 2745 #define MWL8K_STAT_ACK_FAILURE 9 2746 #define MWL8K_STAT_RTS_FAILURE 12 2747 #define MWL8K_STAT_FCS_ERROR 24 2748 #define MWL8K_STAT_RTS_SUCCESS 11 2749 2750 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, 2751 struct ieee80211_low_level_stats *stats) 2752 { 2753 struct mwl8k_cmd_get_stat *cmd; 2754 int rc; 2755 2756 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2757 if (cmd == NULL) 2758 return -ENOMEM; 2759 2760 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); 2761 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2762 2763 rc = mwl8k_post_cmd(hw, &cmd->header); 2764 if (!rc) { 2765 stats->dot11ACKFailureCount = 2766 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); 2767 stats->dot11RTSFailureCount = 2768 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); 2769 stats->dot11FCSErrorCount = 2770 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); 2771 stats->dot11RTSSuccessCount = 2772 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); 2773 } 2774 kfree(cmd); 2775 2776 return rc; 2777 } 2778 2779 /* 2780 * CMD_RADIO_CONTROL. 2781 */ 2782 struct mwl8k_cmd_radio_control { 2783 struct mwl8k_cmd_pkt_hdr header; 2784 __le16 action; 2785 __le16 control; 2786 __le16 radio_on; 2787 } __packed; 2788 2789 static int 2790 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) 2791 { 2792 struct mwl8k_priv *priv = hw->priv; 2793 struct mwl8k_cmd_radio_control *cmd; 2794 int rc; 2795 2796 if (enable == priv->radio_on && !force) 2797 return 0; 2798 2799 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2800 if (cmd == NULL) 2801 return -ENOMEM; 2802 2803 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); 2804 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2805 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2806 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); 2807 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); 2808 2809 rc = mwl8k_post_cmd(hw, &cmd->header); 2810 kfree(cmd); 2811 2812 if (!rc) 2813 priv->radio_on = enable; 2814 2815 return rc; 2816 } 2817 2818 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) 2819 { 2820 return mwl8k_cmd_radio_control(hw, 0, 0); 2821 } 2822 2823 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) 2824 { 2825 return mwl8k_cmd_radio_control(hw, 1, 0); 2826 } 2827 2828 static int 2829 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) 2830 { 2831 struct mwl8k_priv *priv = hw->priv; 2832 2833 priv->radio_short_preamble = short_preamble; 2834 2835 return mwl8k_cmd_radio_control(hw, 1, 1); 2836 } 2837 2838 /* 2839 * CMD_RF_TX_POWER. 2840 */ 2841 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 2842 2843 struct mwl8k_cmd_rf_tx_power { 2844 struct mwl8k_cmd_pkt_hdr header; 2845 __le16 action; 2846 __le16 support_level; 2847 __le16 current_level; 2848 __le16 reserved; 2849 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; 2850 } __packed; 2851 2852 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) 2853 { 2854 struct mwl8k_cmd_rf_tx_power *cmd; 2855 int rc; 2856 2857 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2858 if (cmd == NULL) 2859 return -ENOMEM; 2860 2861 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); 2862 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2863 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 2864 cmd->support_level = cpu_to_le16(dBm); 2865 2866 rc = mwl8k_post_cmd(hw, &cmd->header); 2867 kfree(cmd); 2868 2869 return rc; 2870 } 2871 2872 /* 2873 * CMD_TX_POWER. 2874 */ 2875 #define MWL8K_TX_POWER_LEVEL_TOTAL 12 2876 2877 struct mwl8k_cmd_tx_power { 2878 struct mwl8k_cmd_pkt_hdr header; 2879 __le16 action; 2880 __le16 band; 2881 __le16 channel; 2882 __le16 bw; 2883 __le16 sub_ch; 2884 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; 2885 } __packed; 2886 2887 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, 2888 struct ieee80211_conf *conf, 2889 unsigned short pwr) 2890 { 2891 struct ieee80211_channel *channel = conf->chandef.chan; 2892 enum nl80211_channel_type channel_type = 2893 cfg80211_get_chandef_type(&conf->chandef); 2894 struct mwl8k_cmd_tx_power *cmd; 2895 int rc; 2896 int i; 2897 2898 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2899 if (cmd == NULL) 2900 return -ENOMEM; 2901 2902 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); 2903 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2904 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); 2905 2906 if (channel->band == NL80211_BAND_2GHZ) 2907 cmd->band = cpu_to_le16(0x1); 2908 else if (channel->band == NL80211_BAND_5GHZ) 2909 cmd->band = cpu_to_le16(0x4); 2910 2911 cmd->channel = cpu_to_le16(channel->hw_value); 2912 2913 if (channel_type == NL80211_CHAN_NO_HT || 2914 channel_type == NL80211_CHAN_HT20) { 2915 cmd->bw = cpu_to_le16(0x2); 2916 } else { 2917 cmd->bw = cpu_to_le16(0x4); 2918 if (channel_type == NL80211_CHAN_HT40MINUS) 2919 cmd->sub_ch = cpu_to_le16(0x3); 2920 else if (channel_type == NL80211_CHAN_HT40PLUS) 2921 cmd->sub_ch = cpu_to_le16(0x1); 2922 } 2923 2924 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) 2925 cmd->power_level_list[i] = cpu_to_le16(pwr); 2926 2927 rc = mwl8k_post_cmd(hw, &cmd->header); 2928 kfree(cmd); 2929 2930 return rc; 2931 } 2932 2933 /* 2934 * CMD_RF_ANTENNA. 2935 */ 2936 struct mwl8k_cmd_rf_antenna { 2937 struct mwl8k_cmd_pkt_hdr header; 2938 __le16 antenna; 2939 __le16 mode; 2940 } __packed; 2941 2942 #define MWL8K_RF_ANTENNA_RX 1 2943 #define MWL8K_RF_ANTENNA_TX 2 2944 2945 static int 2946 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) 2947 { 2948 struct mwl8k_cmd_rf_antenna *cmd; 2949 int rc; 2950 2951 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 2952 if (cmd == NULL) 2953 return -ENOMEM; 2954 2955 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); 2956 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 2957 cmd->antenna = cpu_to_le16(antenna); 2958 cmd->mode = cpu_to_le16(mask); 2959 2960 rc = mwl8k_post_cmd(hw, &cmd->header); 2961 kfree(cmd); 2962 2963 return rc; 2964 } 2965 2966 /* 2967 * CMD_SET_BEACON. 2968 */ 2969 struct mwl8k_cmd_set_beacon { 2970 struct mwl8k_cmd_pkt_hdr header; 2971 __le16 beacon_len; 2972 __u8 beacon[]; 2973 }; 2974 2975 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, 2976 struct ieee80211_vif *vif, u8 *beacon, int len) 2977 { 2978 struct mwl8k_cmd_set_beacon *cmd; 2979 int rc; 2980 2981 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); 2982 if (cmd == NULL) 2983 return -ENOMEM; 2984 2985 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); 2986 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); 2987 cmd->beacon_len = cpu_to_le16(len); 2988 memcpy(cmd->beacon, beacon, len); 2989 2990 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 2991 kfree(cmd); 2992 2993 return rc; 2994 } 2995 2996 /* 2997 * CMD_SET_PRE_SCAN. 2998 */ 2999 struct mwl8k_cmd_set_pre_scan { 3000 struct mwl8k_cmd_pkt_hdr header; 3001 } __packed; 3002 3003 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) 3004 { 3005 struct mwl8k_cmd_set_pre_scan *cmd; 3006 int rc; 3007 3008 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3009 if (cmd == NULL) 3010 return -ENOMEM; 3011 3012 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); 3013 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3014 3015 rc = mwl8k_post_cmd(hw, &cmd->header); 3016 kfree(cmd); 3017 3018 return rc; 3019 } 3020 3021 /* 3022 * CMD_BBP_REG_ACCESS. 3023 */ 3024 struct mwl8k_cmd_bbp_reg_access { 3025 struct mwl8k_cmd_pkt_hdr header; 3026 __le16 action; 3027 __le16 offset; 3028 u8 value; 3029 u8 rsrv[3]; 3030 } __packed; 3031 3032 static int 3033 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, 3034 u16 action, 3035 u16 offset, 3036 u8 *value) 3037 { 3038 struct mwl8k_cmd_bbp_reg_access *cmd; 3039 int rc; 3040 3041 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3042 if (cmd == NULL) 3043 return -ENOMEM; 3044 3045 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS); 3046 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3047 cmd->action = cpu_to_le16(action); 3048 cmd->offset = cpu_to_le16(offset); 3049 3050 rc = mwl8k_post_cmd(hw, &cmd->header); 3051 3052 if (!rc) 3053 *value = cmd->value; 3054 else 3055 *value = 0; 3056 3057 kfree(cmd); 3058 3059 return rc; 3060 } 3061 3062 /* 3063 * CMD_SET_POST_SCAN. 3064 */ 3065 struct mwl8k_cmd_set_post_scan { 3066 struct mwl8k_cmd_pkt_hdr header; 3067 __le32 isibss; 3068 __u8 bssid[ETH_ALEN]; 3069 } __packed; 3070 3071 static int 3072 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) 3073 { 3074 struct mwl8k_cmd_set_post_scan *cmd; 3075 int rc; 3076 3077 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3078 if (cmd == NULL) 3079 return -ENOMEM; 3080 3081 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); 3082 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3083 cmd->isibss = 0; 3084 memcpy(cmd->bssid, mac, ETH_ALEN); 3085 3086 rc = mwl8k_post_cmd(hw, &cmd->header); 3087 kfree(cmd); 3088 3089 return rc; 3090 } 3091 3092 static int freq_to_idx(struct mwl8k_priv *priv, int freq) 3093 { 3094 struct ieee80211_supported_band *sband; 3095 int band, ch, idx = 0; 3096 3097 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) { 3098 sband = priv->hw->wiphy->bands[band]; 3099 if (!sband) 3100 continue; 3101 3102 for (ch = 0; ch < sband->n_channels; ch++, idx++) 3103 if (sband->channels[ch].center_freq == freq) 3104 goto exit; 3105 } 3106 3107 exit: 3108 return idx; 3109 } 3110 3111 static void mwl8k_update_survey(struct mwl8k_priv *priv, 3112 struct ieee80211_channel *channel) 3113 { 3114 u32 cca_cnt, rx_rdy; 3115 s8 nf = 0, idx; 3116 struct survey_info *survey; 3117 3118 idx = freq_to_idx(priv, priv->acs_chan->center_freq); 3119 if (idx >= MWL8K_NUM_CHANS) { 3120 wiphy_err(priv->hw->wiphy, "Failed to update survey\n"); 3121 return; 3122 } 3123 3124 survey = &priv->survey[idx]; 3125 3126 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG); 3127 cca_cnt /= 1000; /* uSecs to mSecs */ 3128 survey->time_busy = (u64) cca_cnt; 3129 3130 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG); 3131 rx_rdy /= 1000; /* uSecs to mSecs */ 3132 survey->time_rx = (u64) rx_rdy; 3133 3134 priv->channel_time = jiffies - priv->channel_time; 3135 survey->time = jiffies_to_msecs(priv->channel_time); 3136 3137 survey->channel = channel; 3138 3139 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf); 3140 3141 /* Make sure sign is negative else ACS at hostapd fails */ 3142 survey->noise = nf * -1; 3143 3144 survey->filled = SURVEY_INFO_NOISE_DBM | 3145 SURVEY_INFO_TIME | 3146 SURVEY_INFO_TIME_BUSY | 3147 SURVEY_INFO_TIME_RX; 3148 } 3149 3150 /* 3151 * CMD_SET_RF_CHANNEL. 3152 */ 3153 struct mwl8k_cmd_set_rf_channel { 3154 struct mwl8k_cmd_pkt_hdr header; 3155 __le16 action; 3156 __u8 current_channel; 3157 __le32 channel_flags; 3158 } __packed; 3159 3160 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, 3161 struct ieee80211_conf *conf) 3162 { 3163 struct ieee80211_channel *channel = conf->chandef.chan; 3164 enum nl80211_channel_type channel_type = 3165 cfg80211_get_chandef_type(&conf->chandef); 3166 struct mwl8k_cmd_set_rf_channel *cmd; 3167 struct mwl8k_priv *priv = hw->priv; 3168 int rc; 3169 3170 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3171 if (cmd == NULL) 3172 return -ENOMEM; 3173 3174 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); 3175 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3176 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3177 cmd->current_channel = channel->hw_value; 3178 3179 if (channel->band == NL80211_BAND_2GHZ) 3180 cmd->channel_flags |= cpu_to_le32(0x00000001); 3181 else if (channel->band == NL80211_BAND_5GHZ) 3182 cmd->channel_flags |= cpu_to_le32(0x00000004); 3183 3184 if (!priv->sw_scan_start) { 3185 if (channel_type == NL80211_CHAN_NO_HT || 3186 channel_type == NL80211_CHAN_HT20) 3187 cmd->channel_flags |= cpu_to_le32(0x00000080); 3188 else if (channel_type == NL80211_CHAN_HT40MINUS) 3189 cmd->channel_flags |= cpu_to_le32(0x000001900); 3190 else if (channel_type == NL80211_CHAN_HT40PLUS) 3191 cmd->channel_flags |= cpu_to_le32(0x000000900); 3192 } else { 3193 cmd->channel_flags |= cpu_to_le32(0x00000080); 3194 } 3195 3196 if (priv->sw_scan_start) { 3197 /* Store current channel stats 3198 * before switching to newer one. 3199 * This will be processed only for AP fw. 3200 */ 3201 if (priv->channel_time != 0) 3202 mwl8k_update_survey(priv, priv->acs_chan); 3203 3204 priv->channel_time = jiffies; 3205 priv->acs_chan = channel; 3206 } 3207 3208 rc = mwl8k_post_cmd(hw, &cmd->header); 3209 kfree(cmd); 3210 3211 return rc; 3212 } 3213 3214 /* 3215 * CMD_SET_AID. 3216 */ 3217 #define MWL8K_FRAME_PROT_DISABLED 0x00 3218 #define MWL8K_FRAME_PROT_11G 0x07 3219 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 3220 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 3221 3222 struct mwl8k_cmd_update_set_aid { 3223 struct mwl8k_cmd_pkt_hdr header; 3224 __le16 aid; 3225 3226 /* AP's MAC address (BSSID) */ 3227 __u8 bssid[ETH_ALEN]; 3228 __le16 protection_mode; 3229 __u8 supp_rates[14]; 3230 } __packed; 3231 3232 static void legacy_rate_mask_to_array(u8 *rates, u32 mask) 3233 { 3234 int i; 3235 int j; 3236 3237 /* 3238 * Clear nonstandard rate 4. 3239 */ 3240 mask &= 0x1fef; 3241 3242 for (i = 0, j = 0; i < 13; i++) { 3243 if (mask & (1 << i)) 3244 rates[j++] = mwl8k_rates_24[i].hw_value; 3245 } 3246 } 3247 3248 static int 3249 mwl8k_cmd_set_aid(struct ieee80211_hw *hw, 3250 struct ieee80211_vif *vif, u32 legacy_rate_mask) 3251 { 3252 struct mwl8k_cmd_update_set_aid *cmd; 3253 u16 prot_mode; 3254 int rc; 3255 3256 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3257 if (cmd == NULL) 3258 return -ENOMEM; 3259 3260 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); 3261 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3262 cmd->aid = cpu_to_le16(vif->cfg.aid); 3263 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); 3264 3265 if (vif->bss_conf.use_cts_prot) { 3266 prot_mode = MWL8K_FRAME_PROT_11G; 3267 } else { 3268 switch (vif->bss_conf.ht_operation_mode & 3269 IEEE80211_HT_OP_MODE_PROTECTION) { 3270 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 3271 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; 3272 break; 3273 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 3274 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; 3275 break; 3276 default: 3277 prot_mode = MWL8K_FRAME_PROT_DISABLED; 3278 break; 3279 } 3280 } 3281 cmd->protection_mode = cpu_to_le16(prot_mode); 3282 3283 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); 3284 3285 rc = mwl8k_post_cmd(hw, &cmd->header); 3286 kfree(cmd); 3287 3288 return rc; 3289 } 3290 3291 /* 3292 * CMD_SET_RATE. 3293 */ 3294 struct mwl8k_cmd_set_rate { 3295 struct mwl8k_cmd_pkt_hdr header; 3296 __u8 legacy_rates[14]; 3297 3298 /* Bitmap for supported MCS codes. */ 3299 __u8 mcs_set[16]; 3300 __u8 reserved[16]; 3301 } __packed; 3302 3303 static int 3304 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 3305 u32 legacy_rate_mask, u8 *mcs_rates) 3306 { 3307 struct mwl8k_cmd_set_rate *cmd; 3308 int rc; 3309 3310 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3311 if (cmd == NULL) 3312 return -ENOMEM; 3313 3314 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); 3315 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3316 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); 3317 memcpy(cmd->mcs_set, mcs_rates, 16); 3318 3319 rc = mwl8k_post_cmd(hw, &cmd->header); 3320 kfree(cmd); 3321 3322 return rc; 3323 } 3324 3325 /* 3326 * CMD_FINALIZE_JOIN. 3327 */ 3328 #define MWL8K_FJ_BEACON_MAXLEN 128 3329 3330 struct mwl8k_cmd_finalize_join { 3331 struct mwl8k_cmd_pkt_hdr header; 3332 __le32 sleep_interval; /* Number of beacon periods to sleep */ 3333 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; 3334 } __packed; 3335 3336 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, 3337 int framelen, int dtim) 3338 { 3339 struct mwl8k_cmd_finalize_join *cmd; 3340 struct ieee80211_mgmt *payload = frame; 3341 int payload_len; 3342 int rc; 3343 3344 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3345 if (cmd == NULL) 3346 return -ENOMEM; 3347 3348 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); 3349 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3350 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); 3351 3352 payload_len = framelen - ieee80211_hdrlen(payload->frame_control); 3353 if (payload_len < 0) 3354 payload_len = 0; 3355 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) 3356 payload_len = MWL8K_FJ_BEACON_MAXLEN; 3357 3358 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); 3359 3360 rc = mwl8k_post_cmd(hw, &cmd->header); 3361 kfree(cmd); 3362 3363 return rc; 3364 } 3365 3366 /* 3367 * CMD_SET_RTS_THRESHOLD. 3368 */ 3369 struct mwl8k_cmd_set_rts_threshold { 3370 struct mwl8k_cmd_pkt_hdr header; 3371 __le16 action; 3372 __le16 threshold; 3373 } __packed; 3374 3375 static int 3376 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, 3377 int rts_thresh) 3378 { 3379 struct mwl8k_cmd_set_rts_threshold *cmd; 3380 int rc; 3381 3382 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3383 if (cmd == NULL) 3384 return -ENOMEM; 3385 3386 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); 3387 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3388 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3389 cmd->threshold = cpu_to_le16(rts_thresh); 3390 3391 rc = mwl8k_post_cmd(hw, &cmd->header); 3392 kfree(cmd); 3393 3394 return rc; 3395 } 3396 3397 /* 3398 * CMD_SET_SLOT. 3399 */ 3400 struct mwl8k_cmd_set_slot { 3401 struct mwl8k_cmd_pkt_hdr header; 3402 __le16 action; 3403 __u8 short_slot; 3404 } __packed; 3405 3406 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) 3407 { 3408 struct mwl8k_cmd_set_slot *cmd; 3409 int rc; 3410 3411 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3412 if (cmd == NULL) 3413 return -ENOMEM; 3414 3415 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); 3416 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3417 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3418 cmd->short_slot = short_slot_time; 3419 3420 rc = mwl8k_post_cmd(hw, &cmd->header); 3421 kfree(cmd); 3422 3423 return rc; 3424 } 3425 3426 /* 3427 * CMD_SET_EDCA_PARAMS. 3428 */ 3429 struct mwl8k_cmd_set_edca_params { 3430 struct mwl8k_cmd_pkt_hdr header; 3431 3432 /* See MWL8K_SET_EDCA_XXX below */ 3433 __le16 action; 3434 3435 /* TX opportunity in units of 32 us */ 3436 __le16 txop; 3437 3438 union { 3439 struct { 3440 /* Log exponent of max contention period: 0...15 */ 3441 __le32 log_cw_max; 3442 3443 /* Log exponent of min contention period: 0...15 */ 3444 __le32 log_cw_min; 3445 3446 /* Adaptive interframe spacing in units of 32us */ 3447 __u8 aifs; 3448 3449 /* TX queue to configure */ 3450 __u8 txq; 3451 } ap; 3452 struct { 3453 /* Log exponent of max contention period: 0...15 */ 3454 __u8 log_cw_max; 3455 3456 /* Log exponent of min contention period: 0...15 */ 3457 __u8 log_cw_min; 3458 3459 /* Adaptive interframe spacing in units of 32us */ 3460 __u8 aifs; 3461 3462 /* TX queue to configure */ 3463 __u8 txq; 3464 } sta; 3465 }; 3466 } __packed; 3467 3468 #define MWL8K_SET_EDCA_CW 0x01 3469 #define MWL8K_SET_EDCA_TXOP 0x02 3470 #define MWL8K_SET_EDCA_AIFS 0x04 3471 3472 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ 3473 MWL8K_SET_EDCA_TXOP | \ 3474 MWL8K_SET_EDCA_AIFS) 3475 3476 static int 3477 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, 3478 __u16 cw_min, __u16 cw_max, 3479 __u8 aifs, __u16 txop) 3480 { 3481 struct mwl8k_priv *priv = hw->priv; 3482 struct mwl8k_cmd_set_edca_params *cmd; 3483 int rc; 3484 3485 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3486 if (cmd == NULL) 3487 return -ENOMEM; 3488 3489 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); 3490 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3491 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); 3492 cmd->txop = cpu_to_le16(txop); 3493 if (priv->ap_fw) { 3494 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); 3495 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); 3496 cmd->ap.aifs = aifs; 3497 cmd->ap.txq = qnum; 3498 } else { 3499 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); 3500 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); 3501 cmd->sta.aifs = aifs; 3502 cmd->sta.txq = qnum; 3503 } 3504 3505 rc = mwl8k_post_cmd(hw, &cmd->header); 3506 kfree(cmd); 3507 3508 return rc; 3509 } 3510 3511 /* 3512 * CMD_SET_WMM_MODE. 3513 */ 3514 struct mwl8k_cmd_set_wmm_mode { 3515 struct mwl8k_cmd_pkt_hdr header; 3516 __le16 action; 3517 } __packed; 3518 3519 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) 3520 { 3521 struct mwl8k_priv *priv = hw->priv; 3522 struct mwl8k_cmd_set_wmm_mode *cmd; 3523 int rc; 3524 3525 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3526 if (cmd == NULL) 3527 return -ENOMEM; 3528 3529 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); 3530 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3531 cmd->action = cpu_to_le16(!!enable); 3532 3533 rc = mwl8k_post_cmd(hw, &cmd->header); 3534 kfree(cmd); 3535 3536 if (!rc) 3537 priv->wmm_enabled = enable; 3538 3539 return rc; 3540 } 3541 3542 /* 3543 * CMD_MIMO_CONFIG. 3544 */ 3545 struct mwl8k_cmd_mimo_config { 3546 struct mwl8k_cmd_pkt_hdr header; 3547 __le32 action; 3548 __u8 rx_antenna_map; 3549 __u8 tx_antenna_map; 3550 } __packed; 3551 3552 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) 3553 { 3554 struct mwl8k_cmd_mimo_config *cmd; 3555 int rc; 3556 3557 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3558 if (cmd == NULL) 3559 return -ENOMEM; 3560 3561 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); 3562 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3563 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); 3564 cmd->rx_antenna_map = rx; 3565 cmd->tx_antenna_map = tx; 3566 3567 rc = mwl8k_post_cmd(hw, &cmd->header); 3568 kfree(cmd); 3569 3570 return rc; 3571 } 3572 3573 /* 3574 * CMD_USE_FIXED_RATE (STA version). 3575 */ 3576 struct mwl8k_cmd_use_fixed_rate_sta { 3577 struct mwl8k_cmd_pkt_hdr header; 3578 __le32 action; 3579 __le32 allow_rate_drop; 3580 __le32 num_rates; 3581 struct { 3582 __le32 is_ht_rate; 3583 __le32 enable_retry; 3584 __le32 rate; 3585 __le32 retry_count; 3586 } rate_entry[8]; 3587 __le32 rate_type; 3588 __le32 reserved1; 3589 __le32 reserved2; 3590 } __packed; 3591 3592 #define MWL8K_USE_AUTO_RATE 0x0002 3593 #define MWL8K_UCAST_RATE 0 3594 3595 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) 3596 { 3597 struct mwl8k_cmd_use_fixed_rate_sta *cmd; 3598 int rc; 3599 3600 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3601 if (cmd == NULL) 3602 return -ENOMEM; 3603 3604 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3605 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3606 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3607 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); 3608 3609 rc = mwl8k_post_cmd(hw, &cmd->header); 3610 kfree(cmd); 3611 3612 return rc; 3613 } 3614 3615 /* 3616 * CMD_USE_FIXED_RATE (AP version). 3617 */ 3618 struct mwl8k_cmd_use_fixed_rate_ap { 3619 struct mwl8k_cmd_pkt_hdr header; 3620 __le32 action; 3621 __le32 allow_rate_drop; 3622 __le32 num_rates; 3623 struct mwl8k_rate_entry_ap { 3624 __le32 is_ht_rate; 3625 __le32 enable_retry; 3626 __le32 rate; 3627 __le32 retry_count; 3628 } rate_entry[4]; 3629 u8 multicast_rate; 3630 u8 multicast_rate_type; 3631 u8 management_rate; 3632 } __packed; 3633 3634 static int 3635 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) 3636 { 3637 struct mwl8k_cmd_use_fixed_rate_ap *cmd; 3638 int rc; 3639 3640 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3641 if (cmd == NULL) 3642 return -ENOMEM; 3643 3644 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); 3645 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3646 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); 3647 cmd->multicast_rate = mcast; 3648 cmd->management_rate = mgmt; 3649 3650 rc = mwl8k_post_cmd(hw, &cmd->header); 3651 kfree(cmd); 3652 3653 return rc; 3654 } 3655 3656 /* 3657 * CMD_ENABLE_SNIFFER. 3658 */ 3659 struct mwl8k_cmd_enable_sniffer { 3660 struct mwl8k_cmd_pkt_hdr header; 3661 __le32 action; 3662 } __packed; 3663 3664 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) 3665 { 3666 struct mwl8k_cmd_enable_sniffer *cmd; 3667 int rc; 3668 3669 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3670 if (cmd == NULL) 3671 return -ENOMEM; 3672 3673 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); 3674 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3675 cmd->action = cpu_to_le32(!!enable); 3676 3677 rc = mwl8k_post_cmd(hw, &cmd->header); 3678 kfree(cmd); 3679 3680 return rc; 3681 } 3682 3683 struct mwl8k_cmd_update_mac_addr { 3684 struct mwl8k_cmd_pkt_hdr header; 3685 union { 3686 struct { 3687 __le16 mac_type; 3688 __u8 mac_addr[ETH_ALEN]; 3689 } mbss; 3690 __u8 mac_addr[ETH_ALEN]; 3691 }; 3692 } __packed; 3693 3694 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 3695 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 3696 #define MWL8K_MAC_TYPE_PRIMARY_AP 2 3697 #define MWL8K_MAC_TYPE_SECONDARY_AP 3 3698 3699 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, 3700 struct ieee80211_vif *vif, u8 *mac, bool set) 3701 { 3702 struct mwl8k_priv *priv = hw->priv; 3703 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3704 struct mwl8k_cmd_update_mac_addr *cmd; 3705 int mac_type; 3706 int rc; 3707 3708 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3709 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { 3710 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) 3711 if (priv->ap_fw) 3712 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3713 else 3714 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; 3715 else 3716 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; 3717 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { 3718 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) 3719 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; 3720 else 3721 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; 3722 } 3723 3724 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3725 if (cmd == NULL) 3726 return -ENOMEM; 3727 3728 if (set) 3729 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); 3730 else 3731 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR); 3732 3733 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3734 if (priv->ap_fw) { 3735 cmd->mbss.mac_type = cpu_to_le16(mac_type); 3736 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); 3737 } else { 3738 memcpy(cmd->mac_addr, mac, ETH_ALEN); 3739 } 3740 3741 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3742 kfree(cmd); 3743 3744 return rc; 3745 } 3746 3747 /* 3748 * MWL8K_CMD_SET_MAC_ADDR. 3749 */ 3750 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, 3751 struct ieee80211_vif *vif, u8 *mac) 3752 { 3753 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true); 3754 } 3755 3756 /* 3757 * MWL8K_CMD_DEL_MAC_ADDR. 3758 */ 3759 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, 3760 struct ieee80211_vif *vif, u8 *mac) 3761 { 3762 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false); 3763 } 3764 3765 /* 3766 * CMD_SET_RATEADAPT_MODE. 3767 */ 3768 struct mwl8k_cmd_set_rate_adapt_mode { 3769 struct mwl8k_cmd_pkt_hdr header; 3770 __le16 action; 3771 __le16 mode; 3772 } __packed; 3773 3774 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) 3775 { 3776 struct mwl8k_cmd_set_rate_adapt_mode *cmd; 3777 int rc; 3778 3779 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3780 if (cmd == NULL) 3781 return -ENOMEM; 3782 3783 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); 3784 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3785 cmd->action = cpu_to_le16(MWL8K_CMD_SET); 3786 cmd->mode = cpu_to_le16(mode); 3787 3788 rc = mwl8k_post_cmd(hw, &cmd->header); 3789 kfree(cmd); 3790 3791 return rc; 3792 } 3793 3794 /* 3795 * CMD_GET_WATCHDOG_BITMAP. 3796 */ 3797 struct mwl8k_cmd_get_watchdog_bitmap { 3798 struct mwl8k_cmd_pkt_hdr header; 3799 u8 bitmap; 3800 } __packed; 3801 3802 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) 3803 { 3804 struct mwl8k_cmd_get_watchdog_bitmap *cmd; 3805 int rc; 3806 3807 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3808 if (cmd == NULL) 3809 return -ENOMEM; 3810 3811 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); 3812 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3813 3814 rc = mwl8k_post_cmd(hw, &cmd->header); 3815 if (!rc) 3816 *bitmap = cmd->bitmap; 3817 3818 kfree(cmd); 3819 3820 return rc; 3821 } 3822 3823 #define MWL8K_WMM_QUEUE_NUMBER 3 3824 3825 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 3826 u8 idx); 3827 3828 static void mwl8k_watchdog_ba_events(struct work_struct *work) 3829 { 3830 int rc; 3831 u8 bitmap = 0, stream_index; 3832 struct mwl8k_ampdu_stream *streams; 3833 struct mwl8k_priv *priv = 3834 container_of(work, struct mwl8k_priv, watchdog_ba_handle); 3835 struct ieee80211_hw *hw = priv->hw; 3836 int i; 3837 u32 status = 0; 3838 3839 mwl8k_fw_lock(hw); 3840 3841 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); 3842 if (rc) 3843 goto done; 3844 3845 spin_lock(&priv->stream_lock); 3846 3847 /* the bitmap is the hw queue number. Map it to the ampdu queue. */ 3848 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) { 3849 if (bitmap & (1 << i)) { 3850 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) % 3851 TOTAL_HW_TX_QUEUES; 3852 streams = &priv->ampdu[stream_index]; 3853 if (streams->state == AMPDU_STREAM_ACTIVE) { 3854 ieee80211_stop_tx_ba_session(streams->sta, 3855 streams->tid); 3856 spin_unlock(&priv->stream_lock); 3857 mwl8k_destroy_ba(hw, stream_index); 3858 spin_lock(&priv->stream_lock); 3859 } 3860 } 3861 } 3862 3863 spin_unlock(&priv->stream_lock); 3864 done: 3865 atomic_dec(&priv->watchdog_event_pending); 3866 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3867 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG), 3868 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 3869 mwl8k_fw_unlock(hw); 3870 return; 3871 } 3872 3873 3874 /* 3875 * CMD_BSS_START. 3876 */ 3877 struct mwl8k_cmd_bss_start { 3878 struct mwl8k_cmd_pkt_hdr header; 3879 __le32 enable; 3880 } __packed; 3881 3882 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, 3883 struct ieee80211_vif *vif, int enable) 3884 { 3885 struct mwl8k_cmd_bss_start *cmd; 3886 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 3887 struct mwl8k_priv *priv = hw->priv; 3888 int rc; 3889 3890 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid))) 3891 return 0; 3892 3893 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid))) 3894 return 0; 3895 3896 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3897 if (cmd == NULL) 3898 return -ENOMEM; 3899 3900 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); 3901 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3902 cmd->enable = cpu_to_le32(enable); 3903 3904 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 3905 kfree(cmd); 3906 3907 if (!rc) { 3908 if (enable) 3909 priv->running_bsses |= (1 << mwl8k_vif->macid); 3910 else 3911 priv->running_bsses &= ~(1 << mwl8k_vif->macid); 3912 } 3913 return rc; 3914 } 3915 3916 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap) 3917 { 3918 struct mwl8k_priv *priv = hw->priv; 3919 struct mwl8k_vif *mwl8k_vif, *tmp_vif; 3920 struct ieee80211_vif *vif; 3921 3922 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) { 3923 vif = mwl8k_vif->vif; 3924 3925 if (!(bitmap & (1 << mwl8k_vif->macid))) 3926 continue; 3927 3928 if (vif->type == NL80211_IFTYPE_AP) 3929 mwl8k_cmd_bss_start(hw, vif, enable); 3930 } 3931 } 3932 /* 3933 * CMD_BASTREAM. 3934 */ 3935 3936 /* 3937 * UPSTREAM is tx direction 3938 */ 3939 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 3940 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 3941 3942 enum ba_stream_action_type { 3943 MWL8K_BA_CREATE, 3944 MWL8K_BA_UPDATE, 3945 MWL8K_BA_DESTROY, 3946 MWL8K_BA_FLUSH, 3947 MWL8K_BA_CHECK, 3948 }; 3949 3950 3951 struct mwl8k_create_ba_stream { 3952 __le32 flags; 3953 __le32 idle_thrs; 3954 __le32 bar_thrs; 3955 __le32 window_size; 3956 u8 peer_mac_addr[6]; 3957 u8 dialog_token; 3958 u8 tid; 3959 u8 queue_id; 3960 u8 param_info; 3961 __le32 ba_context; 3962 u8 reset_seq_no_flag; 3963 __le16 curr_seq_no; 3964 u8 sta_src_mac_addr[6]; 3965 } __packed; 3966 3967 struct mwl8k_destroy_ba_stream { 3968 __le32 flags; 3969 __le32 ba_context; 3970 } __packed; 3971 3972 struct mwl8k_cmd_bastream { 3973 struct mwl8k_cmd_pkt_hdr header; 3974 __le32 action; 3975 union { 3976 struct mwl8k_create_ba_stream create_params; 3977 struct mwl8k_destroy_ba_stream destroy_params; 3978 }; 3979 } __packed; 3980 3981 static int 3982 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 3983 struct ieee80211_vif *vif) 3984 { 3985 struct mwl8k_cmd_bastream *cmd; 3986 int rc; 3987 3988 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 3989 if (cmd == NULL) 3990 return -ENOMEM; 3991 3992 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 3993 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 3994 3995 cmd->action = cpu_to_le32(MWL8K_BA_CHECK); 3996 3997 cmd->create_params.queue_id = stream->idx; 3998 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, 3999 ETH_ALEN); 4000 cmd->create_params.tid = stream->tid; 4001 4002 cmd->create_params.flags = 4003 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | 4004 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); 4005 4006 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4007 4008 kfree(cmd); 4009 4010 return rc; 4011 } 4012 4013 static int 4014 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, 4015 u8 buf_size, struct ieee80211_vif *vif) 4016 { 4017 struct mwl8k_cmd_bastream *cmd; 4018 int rc; 4019 4020 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4021 if (cmd == NULL) 4022 return -ENOMEM; 4023 4024 4025 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4026 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4027 4028 cmd->action = cpu_to_le32(MWL8K_BA_CREATE); 4029 4030 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); 4031 cmd->create_params.window_size = cpu_to_le32((u32)buf_size); 4032 cmd->create_params.queue_id = stream->idx; 4033 4034 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); 4035 cmd->create_params.tid = stream->tid; 4036 cmd->create_params.curr_seq_no = cpu_to_le16(0); 4037 cmd->create_params.reset_seq_no_flag = 1; 4038 4039 cmd->create_params.param_info = 4040 (stream->sta->deflink.ht_cap.ampdu_factor & 4041 IEEE80211_HT_AMPDU_PARM_FACTOR) | 4042 ((stream->sta->deflink.ht_cap.ampdu_density << 2) & 4043 IEEE80211_HT_AMPDU_PARM_DENSITY); 4044 4045 cmd->create_params.flags = 4046 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | 4047 BASTREAM_FLAG_DIRECTION_UPSTREAM); 4048 4049 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4050 4051 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", 4052 stream->sta->addr, stream->tid); 4053 kfree(cmd); 4054 4055 return rc; 4056 } 4057 4058 static void mwl8k_destroy_ba(struct ieee80211_hw *hw, 4059 u8 idx) 4060 { 4061 struct mwl8k_cmd_bastream *cmd; 4062 4063 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4064 if (cmd == NULL) 4065 return; 4066 4067 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); 4068 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4069 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); 4070 4071 cmd->destroy_params.ba_context = cpu_to_le32(idx); 4072 mwl8k_post_cmd(hw, &cmd->header); 4073 4074 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx); 4075 4076 kfree(cmd); 4077 } 4078 4079 /* 4080 * CMD_SET_NEW_STN. 4081 */ 4082 struct mwl8k_cmd_set_new_stn { 4083 struct mwl8k_cmd_pkt_hdr header; 4084 __le16 aid; 4085 __u8 mac_addr[6]; 4086 __le16 stn_id; 4087 __le16 action; 4088 __le16 rsvd; 4089 __le32 legacy_rates; 4090 __u8 ht_rates[4]; 4091 __le16 cap_info; 4092 __le16 ht_capabilities_info; 4093 __u8 mac_ht_param_info; 4094 __u8 rev; 4095 __u8 control_channel; 4096 __u8 add_channel; 4097 __le16 op_mode; 4098 __le16 stbc; 4099 __u8 add_qos_info; 4100 __u8 is_qos_sta; 4101 __le32 fw_sta_ptr; 4102 } __packed; 4103 4104 #define MWL8K_STA_ACTION_ADD 0 4105 #define MWL8K_STA_ACTION_REMOVE 2 4106 4107 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, 4108 struct ieee80211_vif *vif, 4109 struct ieee80211_sta *sta) 4110 { 4111 struct mwl8k_cmd_set_new_stn *cmd; 4112 u32 rates; 4113 int rc; 4114 4115 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4116 if (cmd == NULL) 4117 return -ENOMEM; 4118 4119 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4120 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4121 cmd->aid = cpu_to_le16(sta->aid); 4122 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); 4123 cmd->stn_id = cpu_to_le16(sta->aid); 4124 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); 4125 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4126 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 4127 else 4128 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 4129 cmd->legacy_rates = cpu_to_le32(rates); 4130 if (sta->deflink.ht_cap.ht_supported) { 4131 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0]; 4132 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1]; 4133 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2]; 4134 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3]; 4135 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap); 4136 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) | 4137 ((sta->deflink.ht_cap.ampdu_density & 7) << 2); 4138 cmd->is_qos_sta = 1; 4139 } 4140 4141 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4142 kfree(cmd); 4143 4144 return rc; 4145 } 4146 4147 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, 4148 struct ieee80211_vif *vif) 4149 { 4150 struct mwl8k_cmd_set_new_stn *cmd; 4151 int rc; 4152 4153 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4154 if (cmd == NULL) 4155 return -ENOMEM; 4156 4157 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4158 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4159 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); 4160 4161 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4162 kfree(cmd); 4163 4164 return rc; 4165 } 4166 4167 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, 4168 struct ieee80211_vif *vif, u8 *addr) 4169 { 4170 struct mwl8k_cmd_set_new_stn *cmd; 4171 struct mwl8k_priv *priv = hw->priv; 4172 int rc, i; 4173 u8 idx; 4174 4175 spin_lock(&priv->stream_lock); 4176 /* Destroy any active ampdu streams for this sta */ 4177 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) { 4178 struct mwl8k_ampdu_stream *s; 4179 s = &priv->ampdu[i]; 4180 if (s->state != AMPDU_NO_STREAM) { 4181 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) { 4182 if (s->state == AMPDU_STREAM_ACTIVE) { 4183 idx = s->idx; 4184 spin_unlock(&priv->stream_lock); 4185 mwl8k_destroy_ba(hw, idx); 4186 spin_lock(&priv->stream_lock); 4187 } else if (s->state == AMPDU_STREAM_NEW) { 4188 mwl8k_remove_stream(hw, s); 4189 } 4190 } 4191 } 4192 } 4193 4194 spin_unlock(&priv->stream_lock); 4195 4196 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4197 if (cmd == NULL) 4198 return -ENOMEM; 4199 4200 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); 4201 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4202 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4203 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); 4204 4205 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4206 kfree(cmd); 4207 4208 return rc; 4209 } 4210 4211 /* 4212 * CMD_UPDATE_ENCRYPTION. 4213 */ 4214 4215 #define MAX_ENCR_KEY_LENGTH 16 4216 #define MIC_KEY_LENGTH 8 4217 4218 struct mwl8k_cmd_update_encryption { 4219 struct mwl8k_cmd_pkt_hdr header; 4220 4221 __le32 action; 4222 __le32 reserved; 4223 __u8 mac_addr[6]; 4224 __u8 encr_type; 4225 4226 } __packed; 4227 4228 struct mwl8k_cmd_set_key { 4229 struct mwl8k_cmd_pkt_hdr header; 4230 4231 __le32 action; 4232 __le32 reserved; 4233 __le16 length; 4234 __le16 key_type_id; 4235 __le32 key_info; 4236 __le32 key_id; 4237 __le16 key_len; 4238 struct { 4239 __u8 key_material[MAX_ENCR_KEY_LENGTH]; 4240 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; 4241 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; 4242 } tkip; 4243 __le16 tkip_rsc_low; 4244 __le32 tkip_rsc_high; 4245 __le16 tkip_tsc_low; 4246 __le32 tkip_tsc_high; 4247 __u8 mac_addr[6]; 4248 } __packed; 4249 4250 enum { 4251 MWL8K_ENCR_ENABLE, 4252 MWL8K_ENCR_SET_KEY, 4253 MWL8K_ENCR_REMOVE_KEY, 4254 MWL8K_ENCR_SET_GROUP_KEY, 4255 }; 4256 4257 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 4258 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 4259 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 4260 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 4261 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 4262 4263 enum { 4264 MWL8K_ALG_WEP, 4265 MWL8K_ALG_TKIP, 4266 MWL8K_ALG_CCMP, 4267 }; 4268 4269 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 4270 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 4271 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 4272 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 4273 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 4274 4275 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, 4276 struct ieee80211_vif *vif, 4277 u8 *addr, 4278 u8 encr_type) 4279 { 4280 struct mwl8k_cmd_update_encryption *cmd; 4281 int rc; 4282 4283 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4284 if (cmd == NULL) 4285 return -ENOMEM; 4286 4287 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4288 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4289 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); 4290 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4291 cmd->encr_type = encr_type; 4292 4293 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4294 kfree(cmd); 4295 4296 return rc; 4297 } 4298 4299 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, 4300 u8 *addr, 4301 struct ieee80211_key_conf *key) 4302 { 4303 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); 4304 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4305 cmd->length = cpu_to_le16(sizeof(*cmd) - 4306 offsetof(struct mwl8k_cmd_set_key, length)); 4307 cmd->key_id = cpu_to_le32(key->keyidx); 4308 cmd->key_len = cpu_to_le16(key->keylen); 4309 memcpy(cmd->mac_addr, addr, ETH_ALEN); 4310 4311 switch (key->cipher) { 4312 case WLAN_CIPHER_SUITE_WEP40: 4313 case WLAN_CIPHER_SUITE_WEP104: 4314 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); 4315 if (key->keyidx == 0) 4316 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); 4317 4318 break; 4319 case WLAN_CIPHER_SUITE_TKIP: 4320 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); 4321 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4322 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4323 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4324 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID 4325 | MWL8K_KEY_FLAG_TSC_VALID); 4326 break; 4327 case WLAN_CIPHER_SUITE_CCMP: 4328 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); 4329 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4330 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) 4331 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); 4332 break; 4333 default: 4334 return -ENOTSUPP; 4335 } 4336 4337 return 0; 4338 } 4339 4340 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, 4341 struct ieee80211_vif *vif, 4342 u8 *addr, 4343 struct ieee80211_key_conf *key) 4344 { 4345 struct mwl8k_cmd_set_key *cmd; 4346 int rc; 4347 int keymlen; 4348 u32 action; 4349 u8 idx; 4350 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4351 4352 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4353 if (cmd == NULL) 4354 return -ENOMEM; 4355 4356 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4357 if (rc < 0) 4358 goto done; 4359 4360 idx = key->keyidx; 4361 4362 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) 4363 action = MWL8K_ENCR_SET_KEY; 4364 else 4365 action = MWL8K_ENCR_SET_GROUP_KEY; 4366 4367 switch (key->cipher) { 4368 case WLAN_CIPHER_SUITE_WEP40: 4369 case WLAN_CIPHER_SUITE_WEP104: 4370 if (!mwl8k_vif->wep_key_conf[idx].enabled) { 4371 memcpy(mwl8k_vif->wep_key_conf[idx].key, key, 4372 sizeof(*key) + key->keylen); 4373 mwl8k_vif->wep_key_conf[idx].enabled = 1; 4374 } 4375 4376 keymlen = key->keylen; 4377 action = MWL8K_ENCR_SET_KEY; 4378 break; 4379 case WLAN_CIPHER_SUITE_TKIP: 4380 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; 4381 break; 4382 case WLAN_CIPHER_SUITE_CCMP: 4383 keymlen = key->keylen; 4384 break; 4385 default: 4386 rc = -ENOTSUPP; 4387 goto done; 4388 } 4389 4390 memcpy(&cmd->tkip, key->key, keymlen); 4391 cmd->action = cpu_to_le32(action); 4392 4393 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4394 done: 4395 kfree(cmd); 4396 4397 return rc; 4398 } 4399 4400 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, 4401 struct ieee80211_vif *vif, 4402 u8 *addr, 4403 struct ieee80211_key_conf *key) 4404 { 4405 struct mwl8k_cmd_set_key *cmd; 4406 int rc; 4407 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4408 4409 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4410 if (cmd == NULL) 4411 return -ENOMEM; 4412 4413 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); 4414 if (rc < 0) 4415 goto done; 4416 4417 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || 4418 key->cipher == WLAN_CIPHER_SUITE_WEP104) 4419 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; 4420 4421 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); 4422 4423 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); 4424 done: 4425 kfree(cmd); 4426 4427 return rc; 4428 } 4429 4430 static int mwl8k_set_key(struct ieee80211_hw *hw, 4431 enum set_key_cmd cmd_param, 4432 struct ieee80211_vif *vif, 4433 struct ieee80211_sta *sta, 4434 struct ieee80211_key_conf *key) 4435 { 4436 int rc = 0; 4437 u8 encr_type; 4438 u8 *addr; 4439 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4440 struct mwl8k_priv *priv = hw->priv; 4441 4442 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw) 4443 return -EOPNOTSUPP; 4444 4445 if (sta == NULL) 4446 addr = vif->addr; 4447 else 4448 addr = sta->addr; 4449 4450 if (cmd_param == SET_KEY) { 4451 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); 4452 if (rc) 4453 goto out; 4454 4455 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) 4456 || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) 4457 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; 4458 else 4459 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; 4460 4461 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, 4462 encr_type); 4463 if (rc) 4464 goto out; 4465 4466 mwl8k_vif->is_hw_crypto_enabled = true; 4467 4468 } else { 4469 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); 4470 4471 if (rc) 4472 goto out; 4473 } 4474 out: 4475 return rc; 4476 } 4477 4478 /* 4479 * CMD_UPDATE_STADB. 4480 */ 4481 struct ewc_ht_info { 4482 __le16 control1; 4483 __le16 control2; 4484 __le16 control3; 4485 } __packed; 4486 4487 struct peer_capability_info { 4488 /* Peer type - AP vs. STA. */ 4489 __u8 peer_type; 4490 4491 /* Basic 802.11 capabilities from assoc resp. */ 4492 __le16 basic_caps; 4493 4494 /* Set if peer supports 802.11n high throughput (HT). */ 4495 __u8 ht_support; 4496 4497 /* Valid if HT is supported. */ 4498 __le16 ht_caps; 4499 __u8 extended_ht_caps; 4500 struct ewc_ht_info ewc_info; 4501 4502 /* Legacy rate table. Intersection of our rates and peer rates. */ 4503 __u8 legacy_rates[12]; 4504 4505 /* HT rate table. Intersection of our rates and peer rates. */ 4506 __u8 ht_rates[16]; 4507 __u8 pad[16]; 4508 4509 /* If set, interoperability mode, no proprietary extensions. */ 4510 __u8 interop; 4511 __u8 pad2; 4512 __u8 station_id; 4513 __le16 amsdu_enabled; 4514 } __packed; 4515 4516 struct mwl8k_cmd_update_stadb { 4517 struct mwl8k_cmd_pkt_hdr header; 4518 4519 /* See STADB_ACTION_TYPE */ 4520 __le32 action; 4521 4522 /* Peer MAC address */ 4523 __u8 peer_addr[ETH_ALEN]; 4524 4525 __le32 reserved; 4526 4527 /* Peer info - valid during add/update. */ 4528 struct peer_capability_info peer_info; 4529 } __packed; 4530 4531 #define MWL8K_STA_DB_MODIFY_ENTRY 1 4532 #define MWL8K_STA_DB_DEL_ENTRY 2 4533 4534 /* Peer Entry flags - used to define the type of the peer node */ 4535 #define MWL8K_PEER_TYPE_ACCESSPOINT 2 4536 4537 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, 4538 struct ieee80211_vif *vif, 4539 struct ieee80211_sta *sta) 4540 { 4541 struct mwl8k_cmd_update_stadb *cmd; 4542 struct peer_capability_info *p; 4543 u32 rates; 4544 int rc; 4545 4546 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4547 if (cmd == NULL) 4548 return -ENOMEM; 4549 4550 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4551 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4552 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); 4553 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); 4554 4555 p = &cmd->peer_info; 4556 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; 4557 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); 4558 p->ht_support = sta->deflink.ht_cap.ht_supported; 4559 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap); 4560 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) | 4561 ((sta->deflink.ht_cap.ampdu_density & 7) << 2); 4562 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 4563 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ]; 4564 else 4565 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 4566 legacy_rate_mask_to_array(p->legacy_rates, rates); 4567 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16); 4568 p->interop = 1; 4569 p->amsdu_enabled = 0; 4570 4571 rc = mwl8k_post_cmd(hw, &cmd->header); 4572 if (!rc) 4573 rc = p->station_id; 4574 kfree(cmd); 4575 4576 return rc; 4577 } 4578 4579 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, 4580 struct ieee80211_vif *vif, u8 *addr) 4581 { 4582 struct mwl8k_cmd_update_stadb *cmd; 4583 int rc; 4584 4585 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); 4586 if (cmd == NULL) 4587 return -ENOMEM; 4588 4589 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); 4590 cmd->header.length = cpu_to_le16(sizeof(*cmd)); 4591 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); 4592 memcpy(cmd->peer_addr, addr, ETH_ALEN); 4593 4594 rc = mwl8k_post_cmd(hw, &cmd->header); 4595 kfree(cmd); 4596 4597 return rc; 4598 } 4599 4600 4601 /* 4602 * Interrupt handling. 4603 */ 4604 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) 4605 { 4606 struct ieee80211_hw *hw = dev_id; 4607 struct mwl8k_priv *priv = hw->priv; 4608 u32 status; 4609 4610 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4611 if (!status) 4612 return IRQ_NONE; 4613 4614 if (status & MWL8K_A2H_INT_TX_DONE) { 4615 status &= ~MWL8K_A2H_INT_TX_DONE; 4616 tasklet_schedule(&priv->poll_tx_task); 4617 } 4618 4619 if (status & MWL8K_A2H_INT_RX_READY) { 4620 status &= ~MWL8K_A2H_INT_RX_READY; 4621 tasklet_schedule(&priv->poll_rx_task); 4622 } 4623 4624 if (status & MWL8K_A2H_INT_BA_WATCHDOG) { 4625 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG, 4626 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4627 4628 atomic_inc(&priv->watchdog_event_pending); 4629 status &= ~MWL8K_A2H_INT_BA_WATCHDOG; 4630 ieee80211_queue_work(hw, &priv->watchdog_ba_handle); 4631 } 4632 4633 if (status) 4634 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4635 4636 if (status & MWL8K_A2H_INT_OPC_DONE) { 4637 if (priv->hostcmd_wait != NULL) 4638 complete(priv->hostcmd_wait); 4639 } 4640 4641 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { 4642 if (!mutex_is_locked(&priv->fw_mutex) && 4643 priv->radio_on && priv->pending_tx_pkts) 4644 mwl8k_tx_start(priv); 4645 } 4646 4647 return IRQ_HANDLED; 4648 } 4649 4650 static void mwl8k_tx_poll(struct tasklet_struct *t) 4651 { 4652 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task); 4653 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4654 int limit; 4655 int i; 4656 4657 limit = 32; 4658 4659 spin_lock(&priv->tx_lock); 4660 4661 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4662 limit -= mwl8k_txq_reclaim(hw, i, limit, 0); 4663 4664 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { 4665 complete(priv->tx_wait); 4666 priv->tx_wait = NULL; 4667 } 4668 4669 spin_unlock(&priv->tx_lock); 4670 4671 if (limit) { 4672 writel(~MWL8K_A2H_INT_TX_DONE, 4673 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4674 } else { 4675 tasklet_schedule(&priv->poll_tx_task); 4676 } 4677 } 4678 4679 static void mwl8k_rx_poll(struct tasklet_struct *t) 4680 { 4681 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task); 4682 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev); 4683 int limit; 4684 4685 limit = 32; 4686 limit -= rxq_process(hw, 0, limit); 4687 limit -= rxq_refill(hw, 0, limit); 4688 4689 if (limit) { 4690 writel(~MWL8K_A2H_INT_RX_READY, 4691 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 4692 } else { 4693 tasklet_schedule(&priv->poll_rx_task); 4694 } 4695 } 4696 4697 4698 /* 4699 * Core driver operations. 4700 */ 4701 static void mwl8k_tx(struct ieee80211_hw *hw, 4702 struct ieee80211_tx_control *control, 4703 struct sk_buff *skb) 4704 { 4705 struct mwl8k_priv *priv = hw->priv; 4706 int index = skb_get_queue_mapping(skb); 4707 4708 if (!priv->radio_on) { 4709 wiphy_debug(hw->wiphy, 4710 "dropped TX frame since radio disabled\n"); 4711 dev_kfree_skb(skb); 4712 return; 4713 } 4714 4715 mwl8k_txq_xmit(hw, index, control->sta, skb); 4716 } 4717 4718 static int mwl8k_start(struct ieee80211_hw *hw) 4719 { 4720 struct mwl8k_priv *priv = hw->priv; 4721 int rc; 4722 4723 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 4724 IRQF_SHARED, MWL8K_NAME, hw); 4725 if (rc) { 4726 priv->irq = -1; 4727 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 4728 return -EIO; 4729 } 4730 priv->irq = priv->pdev->irq; 4731 4732 /* Enable TX reclaim and RX tasklets. */ 4733 tasklet_enable(&priv->poll_tx_task); 4734 tasklet_enable(&priv->poll_rx_task); 4735 4736 /* Enable interrupts */ 4737 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4738 iowrite32(MWL8K_A2H_EVENTS, 4739 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 4740 4741 rc = mwl8k_fw_lock(hw); 4742 if (!rc) { 4743 rc = mwl8k_cmd_radio_enable(hw); 4744 4745 if (!priv->ap_fw) { 4746 if (!rc) 4747 rc = mwl8k_cmd_enable_sniffer(hw, 0); 4748 4749 if (!rc) 4750 rc = mwl8k_cmd_set_pre_scan(hw); 4751 4752 if (!rc) 4753 rc = mwl8k_cmd_set_post_scan(hw, 4754 "\x00\x00\x00\x00\x00\x00"); 4755 } 4756 4757 if (!rc) 4758 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); 4759 4760 if (!rc) 4761 rc = mwl8k_cmd_set_wmm_mode(hw, 0); 4762 4763 mwl8k_fw_unlock(hw); 4764 } 4765 4766 if (rc) { 4767 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4768 free_irq(priv->pdev->irq, hw); 4769 priv->irq = -1; 4770 tasklet_disable(&priv->poll_tx_task); 4771 tasklet_disable(&priv->poll_rx_task); 4772 } else { 4773 ieee80211_wake_queues(hw); 4774 } 4775 4776 return rc; 4777 } 4778 4779 static void mwl8k_stop(struct ieee80211_hw *hw, bool suspend) 4780 { 4781 struct mwl8k_priv *priv = hw->priv; 4782 int i; 4783 4784 if (!priv->hw_restart_in_progress) 4785 mwl8k_cmd_radio_disable(hw); 4786 4787 ieee80211_stop_queues(hw); 4788 4789 /* Disable interrupts */ 4790 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 4791 if (priv->irq != -1) { 4792 free_irq(priv->pdev->irq, hw); 4793 priv->irq = -1; 4794 } 4795 4796 /* Stop finalize join worker */ 4797 cancel_work_sync(&priv->finalize_join_worker); 4798 cancel_work_sync(&priv->watchdog_ba_handle); 4799 if (priv->beacon_skb != NULL) 4800 dev_kfree_skb(priv->beacon_skb); 4801 4802 /* Stop TX reclaim and RX tasklets. */ 4803 tasklet_disable(&priv->poll_tx_task); 4804 tasklet_disable(&priv->poll_rx_task); 4805 4806 /* Return all skbs to mac80211 */ 4807 for (i = 0; i < mwl8k_tx_queues(priv); i++) 4808 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 4809 } 4810 4811 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); 4812 4813 static int mwl8k_add_interface(struct ieee80211_hw *hw, 4814 struct ieee80211_vif *vif) 4815 { 4816 struct mwl8k_priv *priv = hw->priv; 4817 struct mwl8k_vif *mwl8k_vif; 4818 u32 macids_supported; 4819 int macid, rc; 4820 struct mwl8k_device_info *di; 4821 4822 /* 4823 * Reject interface creation if sniffer mode is active, as 4824 * STA operation is mutually exclusive with hardware sniffer 4825 * mode. (Sniffer mode is only used on STA firmware.) 4826 */ 4827 if (priv->sniffer_enabled) { 4828 wiphy_info(hw->wiphy, 4829 "unable to create STA interface because sniffer mode is enabled\n"); 4830 return -EINVAL; 4831 } 4832 4833 di = priv->device_info; 4834 switch (vif->type) { 4835 case NL80211_IFTYPE_AP: 4836 if (!priv->ap_fw && di->fw_image_ap) { 4837 /* we must load the ap fw to meet this request */ 4838 if (!list_empty(&priv->vif_list)) 4839 return -EBUSY; 4840 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4841 if (rc) 4842 return rc; 4843 } 4844 macids_supported = priv->ap_macids_supported; 4845 break; 4846 case NL80211_IFTYPE_STATION: 4847 if (priv->ap_fw && di->fw_image_sta) { 4848 if (!list_empty(&priv->vif_list)) { 4849 wiphy_warn(hw->wiphy, "AP interface is running.\n" 4850 "Adding STA interface for WDS"); 4851 } else { 4852 /* we must load the sta fw to 4853 * meet this request. 4854 */ 4855 rc = mwl8k_reload_firmware(hw, 4856 di->fw_image_sta); 4857 if (rc) 4858 return rc; 4859 } 4860 } 4861 macids_supported = priv->sta_macids_supported; 4862 break; 4863 default: 4864 return -EINVAL; 4865 } 4866 4867 macid = ffs(macids_supported & ~priv->macids_used); 4868 if (!macid--) 4869 return -EBUSY; 4870 4871 /* Setup driver private area. */ 4872 mwl8k_vif = MWL8K_VIF(vif); 4873 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); 4874 mwl8k_vif->vif = vif; 4875 mwl8k_vif->macid = macid; 4876 mwl8k_vif->seqno = 0; 4877 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); 4878 mwl8k_vif->is_hw_crypto_enabled = false; 4879 4880 /* Set the mac address. */ 4881 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); 4882 4883 if (vif->type == NL80211_IFTYPE_AP) 4884 mwl8k_cmd_set_new_stn_add_self(hw, vif); 4885 4886 priv->macids_used |= 1 << mwl8k_vif->macid; 4887 list_add_tail(&mwl8k_vif->list, &priv->vif_list); 4888 4889 return 0; 4890 } 4891 4892 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif) 4893 { 4894 /* Has ieee80211_restart_hw re-added the removed interfaces? */ 4895 if (!priv->macids_used) 4896 return; 4897 4898 priv->macids_used &= ~(1 << vif->macid); 4899 list_del(&vif->list); 4900 } 4901 4902 static void mwl8k_remove_interface(struct ieee80211_hw *hw, 4903 struct ieee80211_vif *vif) 4904 { 4905 struct mwl8k_priv *priv = hw->priv; 4906 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 4907 4908 if (vif->type == NL80211_IFTYPE_AP) 4909 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); 4910 4911 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr); 4912 4913 mwl8k_remove_vif(priv, mwl8k_vif); 4914 } 4915 4916 static void mwl8k_hw_restart_work(struct work_struct *work) 4917 { 4918 struct mwl8k_priv *priv = 4919 container_of(work, struct mwl8k_priv, fw_reload); 4920 struct ieee80211_hw *hw = priv->hw; 4921 struct mwl8k_device_info *di; 4922 int rc; 4923 4924 /* If some command is waiting for a response, clear it */ 4925 if (priv->hostcmd_wait != NULL) { 4926 complete(priv->hostcmd_wait); 4927 priv->hostcmd_wait = NULL; 4928 } 4929 4930 priv->hw_restart_owner = current; 4931 di = priv->device_info; 4932 mwl8k_fw_lock(hw); 4933 4934 if (priv->ap_fw) 4935 rc = mwl8k_reload_firmware(hw, di->fw_image_ap); 4936 else 4937 rc = mwl8k_reload_firmware(hw, di->fw_image_sta); 4938 4939 if (rc) 4940 goto fail; 4941 4942 priv->hw_restart_owner = NULL; 4943 priv->hw_restart_in_progress = false; 4944 4945 /* 4946 * This unlock will wake up the queues and 4947 * also opens the command path for other 4948 * commands 4949 */ 4950 mwl8k_fw_unlock(hw); 4951 4952 ieee80211_restart_hw(hw); 4953 4954 wiphy_err(hw->wiphy, "Firmware restarted successfully\n"); 4955 4956 return; 4957 fail: 4958 mwl8k_fw_unlock(hw); 4959 4960 wiphy_err(hw->wiphy, "Firmware restart failed\n"); 4961 } 4962 4963 static int mwl8k_config(struct ieee80211_hw *hw, int radio_idx, u32 changed) 4964 { 4965 struct ieee80211_conf *conf = &hw->conf; 4966 struct mwl8k_priv *priv = hw->priv; 4967 int rc; 4968 4969 rc = mwl8k_fw_lock(hw); 4970 if (rc) 4971 return rc; 4972 4973 if (conf->flags & IEEE80211_CONF_IDLE) 4974 rc = mwl8k_cmd_radio_disable(hw); 4975 else 4976 rc = mwl8k_cmd_radio_enable(hw); 4977 if (rc) 4978 goto out; 4979 4980 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 4981 rc = mwl8k_cmd_set_rf_channel(hw, conf); 4982 if (rc) 4983 goto out; 4984 } 4985 4986 if (conf->power_level > 18) 4987 conf->power_level = 18; 4988 4989 if (priv->ap_fw) { 4990 4991 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { 4992 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); 4993 if (rc) 4994 goto out; 4995 } 4996 4997 4998 } else { 4999 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); 5000 if (rc) 5001 goto out; 5002 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); 5003 } 5004 5005 out: 5006 mwl8k_fw_unlock(hw); 5007 5008 return rc; 5009 } 5010 5011 static void 5012 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5013 struct ieee80211_bss_conf *info, u32 changed) 5014 { 5015 struct mwl8k_priv *priv = hw->priv; 5016 u32 ap_legacy_rates = 0; 5017 u8 ap_mcs_rates[16]; 5018 int rc; 5019 5020 if (mwl8k_fw_lock(hw)) 5021 return; 5022 5023 /* 5024 * No need to capture a beacon if we're no longer associated. 5025 */ 5026 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc) 5027 priv->capture_beacon = false; 5028 5029 /* 5030 * Get the AP's legacy and MCS rates. 5031 */ 5032 if (vif->cfg.assoc) { 5033 struct ieee80211_sta *ap; 5034 5035 rcu_read_lock(); 5036 5037 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); 5038 if (ap == NULL) { 5039 rcu_read_unlock(); 5040 goto out; 5041 } 5042 5043 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) { 5044 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ]; 5045 } else { 5046 ap_legacy_rates = 5047 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5; 5048 } 5049 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16); 5050 5051 rcu_read_unlock(); 5052 5053 if (changed & BSS_CHANGED_ASSOC) { 5054 if (!priv->ap_fw) { 5055 rc = mwl8k_cmd_set_rate(hw, vif, 5056 ap_legacy_rates, 5057 ap_mcs_rates); 5058 if (rc) 5059 goto out; 5060 5061 rc = mwl8k_cmd_use_fixed_rate_sta(hw); 5062 if (rc) 5063 goto out; 5064 } else { 5065 int idx; 5066 int rate; 5067 5068 /* Use AP firmware specific rate command. 5069 */ 5070 idx = ffs(vif->bss_conf.basic_rates); 5071 if (idx) 5072 idx--; 5073 5074 if (hw->conf.chandef.chan->band == 5075 NL80211_BAND_2GHZ) 5076 rate = mwl8k_rates_24[idx].hw_value; 5077 else 5078 rate = mwl8k_rates_50[idx].hw_value; 5079 5080 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5081 } 5082 } 5083 } 5084 5085 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5086 rc = mwl8k_set_radio_preamble(hw, 5087 vif->bss_conf.use_short_preamble); 5088 if (rc) 5089 goto out; 5090 } 5091 5092 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) { 5093 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); 5094 if (rc) 5095 goto out; 5096 } 5097 5098 if (vif->cfg.assoc && !priv->ap_fw && 5099 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | 5100 BSS_CHANGED_HT))) { 5101 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); 5102 if (rc) 5103 goto out; 5104 } 5105 5106 if (vif->cfg.assoc && 5107 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { 5108 /* 5109 * Finalize the join. Tell rx handler to process 5110 * next beacon from our BSSID. 5111 */ 5112 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); 5113 priv->capture_beacon = true; 5114 } 5115 5116 out: 5117 mwl8k_fw_unlock(hw); 5118 } 5119 5120 static void 5121 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5122 struct ieee80211_bss_conf *info, u32 changed) 5123 { 5124 int rc; 5125 5126 if (mwl8k_fw_lock(hw)) 5127 return; 5128 5129 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 5130 rc = mwl8k_set_radio_preamble(hw, 5131 vif->bss_conf.use_short_preamble); 5132 if (rc) 5133 goto out; 5134 } 5135 5136 if (changed & BSS_CHANGED_BASIC_RATES) { 5137 int idx; 5138 int rate; 5139 5140 /* 5141 * Use lowest supported basic rate for multicasts 5142 * and management frames (such as probe responses -- 5143 * beacons will always go out at 1 Mb/s). 5144 */ 5145 idx = ffs(vif->bss_conf.basic_rates); 5146 if (idx) 5147 idx--; 5148 5149 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) 5150 rate = mwl8k_rates_24[idx].hw_value; 5151 else 5152 rate = mwl8k_rates_50[idx].hw_value; 5153 5154 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); 5155 } 5156 5157 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { 5158 struct sk_buff *skb; 5159 5160 skb = ieee80211_beacon_get(hw, vif, 0); 5161 if (skb != NULL) { 5162 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); 5163 kfree_skb(skb); 5164 } 5165 } 5166 5167 if (changed & BSS_CHANGED_BEACON_ENABLED) 5168 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); 5169 5170 out: 5171 mwl8k_fw_unlock(hw); 5172 } 5173 5174 static void 5175 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5176 struct ieee80211_bss_conf *info, u64 changed) 5177 { 5178 if (vif->type == NL80211_IFTYPE_STATION) 5179 mwl8k_bss_info_changed_sta(hw, vif, info, changed); 5180 if (vif->type == NL80211_IFTYPE_AP) 5181 mwl8k_bss_info_changed_ap(hw, vif, info, changed); 5182 } 5183 5184 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, 5185 struct netdev_hw_addr_list *mc_list) 5186 { 5187 struct mwl8k_cmd_pkt_hdr *cmd; 5188 5189 /* 5190 * Synthesize and return a command packet that programs the 5191 * hardware multicast address filter. At this point we don't 5192 * know whether FIF_ALLMULTI is being requested, but if it is, 5193 * we'll end up throwing this packet away and creating a new 5194 * one in mwl8k_configure_filter(). 5195 */ 5196 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); 5197 5198 return (unsigned long)cmd; 5199 } 5200 5201 static int 5202 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, 5203 unsigned int changed_flags, 5204 unsigned int *total_flags) 5205 { 5206 struct mwl8k_priv *priv = hw->priv; 5207 5208 /* 5209 * Hardware sniffer mode is mutually exclusive with STA 5210 * operation, so refuse to enable sniffer mode if a STA 5211 * interface is active. 5212 */ 5213 if (!list_empty(&priv->vif_list)) { 5214 if (net_ratelimit()) 5215 wiphy_info(hw->wiphy, 5216 "not enabling sniffer mode because STA interface is active\n"); 5217 return 0; 5218 } 5219 5220 if (!priv->sniffer_enabled) { 5221 if (mwl8k_cmd_enable_sniffer(hw, 1)) 5222 return 0; 5223 priv->sniffer_enabled = true; 5224 } 5225 5226 *total_flags &= FIF_ALLMULTI | 5227 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | 5228 FIF_OTHER_BSS; 5229 5230 return 1; 5231 } 5232 5233 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) 5234 { 5235 if (!list_empty(&priv->vif_list)) 5236 return list_entry(priv->vif_list.next, struct mwl8k_vif, list); 5237 5238 return NULL; 5239 } 5240 5241 static void mwl8k_configure_filter(struct ieee80211_hw *hw, 5242 unsigned int changed_flags, 5243 unsigned int *total_flags, 5244 u64 multicast) 5245 { 5246 struct mwl8k_priv *priv = hw->priv; 5247 struct mwl8k_cmd_pkt_hdr *cmd = (void *)(unsigned long)multicast; 5248 5249 /* 5250 * AP firmware doesn't allow fine-grained control over 5251 * the receive filter. 5252 */ 5253 if (priv->ap_fw) { 5254 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5255 kfree(cmd); 5256 return; 5257 } 5258 5259 /* 5260 * Enable hardware sniffer mode if FIF_CONTROL or 5261 * FIF_OTHER_BSS is requested. 5262 */ 5263 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && 5264 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { 5265 kfree(cmd); 5266 return; 5267 } 5268 5269 /* Clear unsupported feature flags */ 5270 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; 5271 5272 if (mwl8k_fw_lock(hw)) { 5273 kfree(cmd); 5274 return; 5275 } 5276 5277 if (priv->sniffer_enabled) { 5278 mwl8k_cmd_enable_sniffer(hw, 0); 5279 priv->sniffer_enabled = false; 5280 } 5281 5282 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { 5283 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { 5284 /* 5285 * Disable the BSS filter. 5286 */ 5287 mwl8k_cmd_set_pre_scan(hw); 5288 } else { 5289 struct mwl8k_vif *mwl8k_vif; 5290 const u8 *bssid; 5291 5292 /* 5293 * Enable the BSS filter. 5294 * 5295 * If there is an active STA interface, use that 5296 * interface's BSSID, otherwise use a dummy one 5297 * (where the OUI part needs to be nonzero for 5298 * the BSSID to be accepted by POST_SCAN). 5299 */ 5300 mwl8k_vif = mwl8k_first_vif(priv); 5301 if (mwl8k_vif != NULL) 5302 bssid = mwl8k_vif->vif->bss_conf.bssid; 5303 else 5304 bssid = "\x01\x00\x00\x00\x00\x00"; 5305 5306 mwl8k_cmd_set_post_scan(hw, bssid); 5307 } 5308 } 5309 5310 /* 5311 * If FIF_ALLMULTI is being requested, throw away the command 5312 * packet that ->prepare_multicast() built and replace it with 5313 * a command packet that enables reception of all multicast 5314 * packets. 5315 */ 5316 if (*total_flags & FIF_ALLMULTI) { 5317 kfree(cmd); 5318 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); 5319 } 5320 5321 if (cmd != NULL) { 5322 mwl8k_post_cmd(hw, cmd); 5323 kfree(cmd); 5324 } 5325 5326 mwl8k_fw_unlock(hw); 5327 } 5328 5329 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, int radio_idx, 5330 u32 value) 5331 { 5332 return mwl8k_cmd_set_rts_threshold(hw, radio_idx, value); 5333 } 5334 5335 static int mwl8k_sta_remove(struct ieee80211_hw *hw, 5336 struct ieee80211_vif *vif, 5337 struct ieee80211_sta *sta) 5338 { 5339 struct mwl8k_priv *priv = hw->priv; 5340 5341 if (priv->ap_fw) 5342 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); 5343 else 5344 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); 5345 } 5346 5347 static int mwl8k_sta_add(struct ieee80211_hw *hw, 5348 struct ieee80211_vif *vif, 5349 struct ieee80211_sta *sta) 5350 { 5351 struct mwl8k_priv *priv = hw->priv; 5352 int ret; 5353 int i; 5354 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); 5355 struct ieee80211_key_conf *key; 5356 5357 if (!priv->ap_fw) { 5358 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); 5359 if (ret >= 0) { 5360 MWL8K_STA(sta)->peer_id = ret; 5361 if (sta->deflink.ht_cap.ht_supported) 5362 MWL8K_STA(sta)->is_ampdu_allowed = true; 5363 ret = 0; 5364 } 5365 5366 } else { 5367 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); 5368 } 5369 5370 for (i = 0; i < NUM_WEP_KEYS; i++) { 5371 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); 5372 if (mwl8k_vif->wep_key_conf[i].enabled) 5373 mwl8k_set_key(hw, SET_KEY, vif, sta, key); 5374 } 5375 return ret; 5376 } 5377 5378 static int mwl8k_conf_tx(struct ieee80211_hw *hw, 5379 struct ieee80211_vif *vif, 5380 unsigned int link_id, u16 queue, 5381 const struct ieee80211_tx_queue_params *params) 5382 { 5383 struct mwl8k_priv *priv = hw->priv; 5384 int rc; 5385 5386 rc = mwl8k_fw_lock(hw); 5387 if (!rc) { 5388 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); 5389 memcpy(&priv->wmm_params[queue], params, sizeof(*params)); 5390 5391 if (!priv->wmm_enabled) 5392 rc = mwl8k_cmd_set_wmm_mode(hw, 1); 5393 5394 if (!rc) { 5395 int q = MWL8K_TX_WMM_QUEUES - 1 - queue; 5396 rc = mwl8k_cmd_set_edca_params(hw, q, 5397 params->cw_min, 5398 params->cw_max, 5399 params->aifs, 5400 params->txop); 5401 } 5402 5403 mwl8k_fw_unlock(hw); 5404 } 5405 5406 return rc; 5407 } 5408 5409 static int mwl8k_get_stats(struct ieee80211_hw *hw, 5410 struct ieee80211_low_level_stats *stats) 5411 { 5412 return mwl8k_cmd_get_stat(hw, stats); 5413 } 5414 5415 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, 5416 struct survey_info *survey) 5417 { 5418 struct mwl8k_priv *priv = hw->priv; 5419 struct ieee80211_conf *conf = &hw->conf; 5420 struct ieee80211_supported_band *sband; 5421 5422 if (priv->ap_fw) { 5423 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 5424 5425 if (sband && idx >= sband->n_channels) { 5426 idx -= sband->n_channels; 5427 sband = NULL; 5428 } 5429 5430 if (!sband) 5431 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 5432 5433 if (!sband || idx >= sband->n_channels) 5434 return -ENOENT; 5435 5436 memcpy(survey, &priv->survey[idx], sizeof(*survey)); 5437 survey->channel = &sband->channels[idx]; 5438 5439 return 0; 5440 } 5441 5442 if (idx != 0) 5443 return -ENOENT; 5444 5445 survey->channel = conf->chandef.chan; 5446 survey->filled = SURVEY_INFO_NOISE_DBM; 5447 survey->noise = priv->noise; 5448 5449 return 0; 5450 } 5451 5452 #define MAX_AMPDU_ATTEMPTS 5 5453 5454 static int 5455 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 5456 struct ieee80211_ampdu_params *params) 5457 { 5458 struct ieee80211_sta *sta = params->sta; 5459 enum ieee80211_ampdu_mlme_action action = params->action; 5460 u16 tid = params->tid; 5461 u16 *ssn = ¶ms->ssn; 5462 u8 buf_size = params->buf_size; 5463 int i, rc = 0; 5464 struct mwl8k_priv *priv = hw->priv; 5465 struct mwl8k_ampdu_stream *stream; 5466 u8 *addr = sta->addr, idx; 5467 struct mwl8k_sta *sta_info = MWL8K_STA(sta); 5468 5469 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION)) 5470 return -ENOTSUPP; 5471 5472 spin_lock(&priv->stream_lock); 5473 stream = mwl8k_lookup_stream(hw, addr, tid); 5474 5475 switch (action) { 5476 case IEEE80211_AMPDU_RX_START: 5477 case IEEE80211_AMPDU_RX_STOP: 5478 break; 5479 case IEEE80211_AMPDU_TX_START: 5480 /* By the time we get here the hw queues may contain outgoing 5481 * packets for this RA/TID that are not part of this BA 5482 * session. The hw will assign sequence numbers to these 5483 * packets as they go out. So if we query the hw for its next 5484 * sequence number and use that for the SSN here, it may end up 5485 * being wrong, which will lead to sequence number mismatch at 5486 * the recipient. To avoid this, we reset the sequence number 5487 * to O for the first MPDU in this BA stream. 5488 */ 5489 *ssn = 0; 5490 if (stream == NULL) { 5491 /* This means that somebody outside this driver called 5492 * ieee80211_start_tx_ba_session. This is unexpected 5493 * because we do our own rate control. Just warn and 5494 * move on. 5495 */ 5496 wiphy_warn(hw->wiphy, "Unexpected call to %s. " 5497 "Proceeding anyway.\n", __func__); 5498 stream = mwl8k_add_stream(hw, sta, tid); 5499 } 5500 if (stream == NULL) { 5501 wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); 5502 rc = -EBUSY; 5503 break; 5504 } 5505 stream->state = AMPDU_STREAM_IN_PROGRESS; 5506 5507 /* Release the lock before we do the time consuming stuff */ 5508 spin_unlock(&priv->stream_lock); 5509 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { 5510 5511 /* Check if link is still valid */ 5512 if (!sta_info->is_ampdu_allowed) { 5513 spin_lock(&priv->stream_lock); 5514 mwl8k_remove_stream(hw, stream); 5515 spin_unlock(&priv->stream_lock); 5516 return -EBUSY; 5517 } 5518 5519 rc = mwl8k_check_ba(hw, stream, vif); 5520 5521 /* If HW restart is in progress mwl8k_post_cmd will 5522 * return -EBUSY. Avoid retrying mwl8k_check_ba in 5523 * such cases 5524 */ 5525 if (!rc || rc == -EBUSY) 5526 break; 5527 /* 5528 * HW queues take time to be flushed, give them 5529 * sufficient time 5530 */ 5531 5532 msleep(1000); 5533 } 5534 spin_lock(&priv->stream_lock); 5535 if (rc) { 5536 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" 5537 " attempts\n", tid, MAX_AMPDU_ATTEMPTS); 5538 mwl8k_remove_stream(hw, stream); 5539 rc = -EBUSY; 5540 break; 5541 } 5542 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE; 5543 break; 5544 case IEEE80211_AMPDU_TX_STOP_CONT: 5545 case IEEE80211_AMPDU_TX_STOP_FLUSH: 5546 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 5547 if (stream) { 5548 if (stream->state == AMPDU_STREAM_ACTIVE) { 5549 idx = stream->idx; 5550 spin_unlock(&priv->stream_lock); 5551 mwl8k_destroy_ba(hw, idx); 5552 spin_lock(&priv->stream_lock); 5553 } 5554 mwl8k_remove_stream(hw, stream); 5555 } 5556 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); 5557 break; 5558 case IEEE80211_AMPDU_TX_OPERATIONAL: 5559 BUG_ON(stream == NULL); 5560 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); 5561 spin_unlock(&priv->stream_lock); 5562 rc = mwl8k_create_ba(hw, stream, buf_size, vif); 5563 spin_lock(&priv->stream_lock); 5564 if (!rc) 5565 stream->state = AMPDU_STREAM_ACTIVE; 5566 else { 5567 idx = stream->idx; 5568 spin_unlock(&priv->stream_lock); 5569 mwl8k_destroy_ba(hw, idx); 5570 spin_lock(&priv->stream_lock); 5571 wiphy_debug(hw->wiphy, 5572 "Failed adding stream for sta %pM tid %d\n", 5573 addr, tid); 5574 mwl8k_remove_stream(hw, stream); 5575 } 5576 break; 5577 5578 default: 5579 rc = -ENOTSUPP; 5580 } 5581 5582 spin_unlock(&priv->stream_lock); 5583 return rc; 5584 } 5585 5586 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw, 5587 struct ieee80211_vif *vif, 5588 const u8 *mac_addr) 5589 { 5590 struct mwl8k_priv *priv = hw->priv; 5591 u8 tmp; 5592 5593 if (!priv->ap_fw) 5594 return; 5595 5596 /* clear all stats */ 5597 priv->channel_time = 0; 5598 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5599 ioread32(priv->regs + NOK_CCA_CNT_REG); 5600 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5601 5602 priv->sw_scan_start = true; 5603 } 5604 5605 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw, 5606 struct ieee80211_vif *vif) 5607 { 5608 struct mwl8k_priv *priv = hw->priv; 5609 u8 tmp; 5610 5611 if (!priv->ap_fw) 5612 return; 5613 5614 priv->sw_scan_start = false; 5615 5616 /* clear all stats */ 5617 priv->channel_time = 0; 5618 ioread32(priv->regs + BBU_RXRDY_CNT_REG); 5619 ioread32(priv->regs + NOK_CCA_CNT_REG); 5620 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp); 5621 } 5622 5623 static const struct ieee80211_ops mwl8k_ops = { 5624 .add_chanctx = ieee80211_emulate_add_chanctx, 5625 .remove_chanctx = ieee80211_emulate_remove_chanctx, 5626 .change_chanctx = ieee80211_emulate_change_chanctx, 5627 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx, 5628 .tx = mwl8k_tx, 5629 .wake_tx_queue = ieee80211_handle_wake_tx_queue, 5630 .start = mwl8k_start, 5631 .stop = mwl8k_stop, 5632 .add_interface = mwl8k_add_interface, 5633 .remove_interface = mwl8k_remove_interface, 5634 .config = mwl8k_config, 5635 .bss_info_changed = mwl8k_bss_info_changed, 5636 .prepare_multicast = mwl8k_prepare_multicast, 5637 .configure_filter = mwl8k_configure_filter, 5638 .set_key = mwl8k_set_key, 5639 .set_rts_threshold = mwl8k_set_rts_threshold, 5640 .sta_add = mwl8k_sta_add, 5641 .sta_remove = mwl8k_sta_remove, 5642 .conf_tx = mwl8k_conf_tx, 5643 .get_stats = mwl8k_get_stats, 5644 .get_survey = mwl8k_get_survey, 5645 .ampdu_action = mwl8k_ampdu_action, 5646 .sw_scan_start = mwl8k_sw_scan_start, 5647 .sw_scan_complete = mwl8k_sw_scan_complete, 5648 }; 5649 5650 static void mwl8k_finalize_join_worker(struct work_struct *work) 5651 { 5652 struct mwl8k_priv *priv = 5653 container_of(work, struct mwl8k_priv, finalize_join_worker); 5654 struct sk_buff *skb = priv->beacon_skb; 5655 struct ieee80211_mgmt *mgmt = (void *)skb->data; 5656 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); 5657 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, 5658 mgmt->u.beacon.variable, len); 5659 int dtim_period = 1; 5660 5661 if (tim && tim[1] >= 2) 5662 dtim_period = tim[3]; 5663 5664 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); 5665 5666 dev_kfree_skb(skb); 5667 priv->beacon_skb = NULL; 5668 } 5669 5670 enum { 5671 MWL8363 = 0, 5672 MWL8687, 5673 MWL8366, 5674 MWL8764, 5675 }; 5676 5677 #define MWL8K_8366_AP_FW_API 3 5678 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" 5679 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) 5680 5681 #define MWL8K_8764_AP_FW_API 1 5682 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw" 5683 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api) 5684 5685 static struct mwl8k_device_info mwl8k_info_tbl[] = { 5686 [MWL8363] = { 5687 .part_name = "88w8363", 5688 .helper_image = "mwl8k/helper_8363.fw", 5689 .fw_image_sta = "mwl8k/fmimage_8363.fw", 5690 }, 5691 [MWL8687] = { 5692 .part_name = "88w8687", 5693 .helper_image = "mwl8k/helper_8687.fw", 5694 .fw_image_sta = "mwl8k/fmimage_8687.fw", 5695 }, 5696 [MWL8366] = { 5697 .part_name = "88w8366", 5698 .helper_image = "mwl8k/helper_8366.fw", 5699 .fw_image_sta = "mwl8k/fmimage_8366.fw", 5700 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), 5701 .fw_api_ap = MWL8K_8366_AP_FW_API, 5702 .ap_rxd_ops = &rxd_ap_ops, 5703 }, 5704 [MWL8764] = { 5705 .part_name = "88w8764", 5706 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API), 5707 .fw_api_ap = MWL8K_8764_AP_FW_API, 5708 .ap_rxd_ops = &rxd_ap_ops, 5709 }, 5710 }; 5711 5712 MODULE_FIRMWARE("mwl8k/helper_8363.fw"); 5713 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); 5714 MODULE_FIRMWARE("mwl8k/helper_8687.fw"); 5715 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); 5716 MODULE_FIRMWARE("mwl8k/helper_8366.fw"); 5717 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); 5718 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); 5719 5720 static const struct pci_device_id mwl8k_pci_id_table[] = { 5721 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, 5722 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, 5723 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, 5724 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, 5725 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, 5726 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, 5727 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, }, 5728 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, }, 5729 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, 5730 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, }, 5731 { }, 5732 }; 5733 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); 5734 5735 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) 5736 { 5737 int rc; 5738 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" 5739 "Trying alternative firmware %s\n", pci_name(priv->pdev), 5740 priv->fw_pref, priv->fw_alt); 5741 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); 5742 if (rc) { 5743 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5744 pci_name(priv->pdev), priv->fw_alt); 5745 return rc; 5746 } 5747 return 0; 5748 } 5749 5750 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); 5751 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) 5752 { 5753 struct mwl8k_priv *priv = context; 5754 struct mwl8k_device_info *di = priv->device_info; 5755 int rc; 5756 5757 switch (priv->fw_state) { 5758 case FW_STATE_INIT: 5759 if (!fw) { 5760 printk(KERN_ERR "%s: Error requesting helper fw %s\n", 5761 pci_name(priv->pdev), di->helper_image); 5762 goto fail; 5763 } 5764 priv->fw_helper = fw; 5765 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, 5766 true); 5767 if (rc && priv->fw_alt) { 5768 rc = mwl8k_request_alt_fw(priv); 5769 if (rc) 5770 goto fail; 5771 priv->fw_state = FW_STATE_LOADING_ALT; 5772 } else if (rc) 5773 goto fail; 5774 else 5775 priv->fw_state = FW_STATE_LOADING_PREF; 5776 break; 5777 5778 case FW_STATE_LOADING_PREF: 5779 if (!fw) { 5780 if (priv->fw_alt) { 5781 rc = mwl8k_request_alt_fw(priv); 5782 if (rc) 5783 goto fail; 5784 priv->fw_state = FW_STATE_LOADING_ALT; 5785 } else 5786 goto fail; 5787 } else { 5788 priv->fw_ucode = fw; 5789 rc = mwl8k_firmware_load_success(priv); 5790 if (rc) 5791 goto fail; 5792 else 5793 complete(&priv->firmware_loading_complete); 5794 } 5795 break; 5796 5797 case FW_STATE_LOADING_ALT: 5798 if (!fw) { 5799 printk(KERN_ERR "%s: Error requesting alt fw %s\n", 5800 pci_name(priv->pdev), di->helper_image); 5801 goto fail; 5802 } 5803 priv->fw_ucode = fw; 5804 rc = mwl8k_firmware_load_success(priv); 5805 if (rc) 5806 goto fail; 5807 else 5808 complete(&priv->firmware_loading_complete); 5809 break; 5810 5811 default: 5812 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", 5813 MWL8K_NAME, priv->fw_state); 5814 BUG_ON(1); 5815 } 5816 5817 return; 5818 5819 fail: 5820 priv->fw_state = FW_STATE_ERROR; 5821 complete(&priv->firmware_loading_complete); 5822 mwl8k_release_firmware(priv); 5823 device_release_driver(&priv->pdev->dev); 5824 } 5825 5826 #define MAX_RESTART_ATTEMPTS 1 5827 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, 5828 bool nowait) 5829 { 5830 struct mwl8k_priv *priv = hw->priv; 5831 int rc; 5832 int count = MAX_RESTART_ATTEMPTS; 5833 5834 retry: 5835 /* Reset firmware and hardware */ 5836 mwl8k_hw_reset(priv); 5837 5838 /* Ask userland hotplug daemon for the device firmware */ 5839 rc = mwl8k_request_firmware(priv, fw_image, nowait); 5840 if (rc) { 5841 wiphy_err(hw->wiphy, "Firmware files not found\n"); 5842 return rc; 5843 } 5844 5845 if (nowait) 5846 return rc; 5847 5848 /* Load firmware into hardware */ 5849 rc = mwl8k_load_firmware(hw); 5850 if (rc) 5851 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 5852 5853 /* Reclaim memory once firmware is successfully loaded */ 5854 mwl8k_release_firmware(priv); 5855 5856 if (rc && count) { 5857 /* FW did not start successfully; 5858 * lets try one more time 5859 */ 5860 count--; 5861 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n"); 5862 msleep(20); 5863 goto retry; 5864 } 5865 5866 return rc; 5867 } 5868 5869 static int mwl8k_init_txqs(struct ieee80211_hw *hw) 5870 { 5871 struct mwl8k_priv *priv = hw->priv; 5872 int rc = 0; 5873 int i; 5874 5875 for (i = 0; i < mwl8k_tx_queues(priv); i++) { 5876 rc = mwl8k_txq_init(hw, i); 5877 if (rc) 5878 break; 5879 if (priv->ap_fw) 5880 iowrite32(priv->txq[i].txd_dma, 5881 priv->sram + priv->txq_offset[i]); 5882 } 5883 return rc; 5884 } 5885 5886 /* initialize hw after successfully loading a firmware image */ 5887 static int mwl8k_probe_hw(struct ieee80211_hw *hw) 5888 { 5889 struct mwl8k_priv *priv = hw->priv; 5890 int rc = 0; 5891 int i; 5892 5893 if (priv->ap_fw) { 5894 priv->rxd_ops = priv->device_info->ap_rxd_ops; 5895 if (priv->rxd_ops == NULL) { 5896 wiphy_err(hw->wiphy, 5897 "Driver does not have AP firmware image support for this hardware\n"); 5898 rc = -ENOENT; 5899 goto err_stop_firmware; 5900 } 5901 } else { 5902 priv->rxd_ops = &rxd_sta_ops; 5903 } 5904 5905 priv->sniffer_enabled = false; 5906 priv->wmm_enabled = false; 5907 priv->pending_tx_pkts = 0; 5908 atomic_set(&priv->watchdog_event_pending, 0); 5909 5910 rc = mwl8k_rxq_init(hw, 0); 5911 if (rc) 5912 goto err_stop_firmware; 5913 rxq_refill(hw, 0, INT_MAX); 5914 5915 /* For the sta firmware, we need to know the dma addresses of tx queues 5916 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them 5917 * prior to issuing this command. But for the AP case, we learn the 5918 * total number of queues from the result CMD_GET_HW_SPEC, so for this 5919 * case we must initialize the tx queues after. 5920 */ 5921 priv->num_ampdu_queues = 0; 5922 if (!priv->ap_fw) { 5923 rc = mwl8k_init_txqs(hw); 5924 if (rc) 5925 goto err_free_queues; 5926 } 5927 5928 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); 5929 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5930 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| 5931 MWL8K_A2H_INT_BA_WATCHDOG, 5932 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); 5933 iowrite32(MWL8K_A2H_INT_OPC_DONE, 5934 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); 5935 5936 rc = request_irq(priv->pdev->irq, mwl8k_interrupt, 5937 IRQF_SHARED, MWL8K_NAME, hw); 5938 if (rc) { 5939 wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); 5940 goto err_free_queues; 5941 } 5942 5943 /* 5944 * When hw restart is requested, 5945 * mac80211 will take care of clearing 5946 * the ampdu streams, so do not clear 5947 * the ampdu state here 5948 */ 5949 if (!priv->hw_restart_in_progress) 5950 memset(priv->ampdu, 0, sizeof(priv->ampdu)); 5951 5952 /* 5953 * Temporarily enable interrupts. Initial firmware host 5954 * commands use interrupts and avoid polling. Disable 5955 * interrupts when done. 5956 */ 5957 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5958 5959 /* Get config data, mac addrs etc */ 5960 if (priv->ap_fw) { 5961 rc = mwl8k_cmd_get_hw_spec_ap(hw); 5962 if (!rc) 5963 rc = mwl8k_init_txqs(hw); 5964 if (!rc) 5965 rc = mwl8k_cmd_set_hw_spec(hw); 5966 } else { 5967 rc = mwl8k_cmd_get_hw_spec_sta(hw); 5968 } 5969 if (rc) { 5970 wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); 5971 goto err_free_irq; 5972 } 5973 5974 /* Turn radio off */ 5975 rc = mwl8k_cmd_radio_disable(hw); 5976 if (rc) { 5977 wiphy_err(hw->wiphy, "Cannot disable\n"); 5978 goto err_free_irq; 5979 } 5980 5981 /* Clear MAC address */ 5982 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); 5983 if (rc) { 5984 wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); 5985 goto err_free_irq; 5986 } 5987 5988 /* Configure Antennas */ 5989 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); 5990 if (rc) 5991 wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); 5992 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); 5993 if (rc) 5994 wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); 5995 5996 5997 /* Disable interrupts */ 5998 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 5999 free_irq(priv->pdev->irq, hw); 6000 6001 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", 6002 priv->device_info->part_name, 6003 priv->hw_rev, hw->wiphy->perm_addr, 6004 priv->ap_fw ? "AP" : "STA", 6005 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, 6006 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); 6007 6008 return 0; 6009 6010 err_free_irq: 6011 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); 6012 free_irq(priv->pdev->irq, hw); 6013 6014 err_free_queues: 6015 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6016 mwl8k_txq_deinit(hw, i); 6017 mwl8k_rxq_deinit(hw, 0); 6018 6019 err_stop_firmware: 6020 mwl8k_hw_reset(priv); 6021 6022 return rc; 6023 } 6024 6025 /* 6026 * invoke mwl8k_reload_firmware to change the firmware image after the device 6027 * has already been registered 6028 */ 6029 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) 6030 { 6031 int i, rc = 0; 6032 struct mwl8k_priv *priv = hw->priv; 6033 struct mwl8k_vif *vif, *tmp_vif; 6034 6035 mwl8k_stop(hw, false); 6036 mwl8k_rxq_deinit(hw, 0); 6037 6038 /* 6039 * All the existing interfaces are re-added by the ieee80211_reconfig; 6040 * which means driver should remove existing interfaces before calling 6041 * ieee80211_restart_hw 6042 */ 6043 if (priv->hw_restart_in_progress) 6044 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list) 6045 mwl8k_remove_vif(priv, vif); 6046 6047 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6048 mwl8k_txq_deinit(hw, i); 6049 6050 rc = mwl8k_init_firmware(hw, fw_image, false); 6051 if (rc) 6052 goto fail; 6053 6054 rc = mwl8k_probe_hw(hw); 6055 if (rc) 6056 goto fail; 6057 6058 if (priv->hw_restart_in_progress) 6059 return rc; 6060 6061 rc = mwl8k_start(hw); 6062 if (rc) 6063 goto fail; 6064 6065 rc = mwl8k_config(hw, -1, ~0); 6066 if (rc) 6067 goto fail; 6068 6069 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { 6070 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]); 6071 if (rc) 6072 goto fail; 6073 } 6074 6075 return rc; 6076 6077 fail: 6078 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); 6079 return rc; 6080 } 6081 6082 static const struct ieee80211_iface_limit ap_if_limits[] = { 6083 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) }, 6084 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) }, 6085 }; 6086 6087 static const struct ieee80211_iface_combination ap_if_comb = { 6088 .limits = ap_if_limits, 6089 .n_limits = ARRAY_SIZE(ap_if_limits), 6090 .max_interfaces = 8, 6091 .num_different_channels = 1, 6092 }; 6093 6094 6095 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) 6096 { 6097 struct ieee80211_hw *hw = priv->hw; 6098 int i, rc; 6099 6100 rc = mwl8k_load_firmware(hw); 6101 mwl8k_release_firmware(priv); 6102 if (rc) { 6103 wiphy_err(hw->wiphy, "Cannot start firmware\n"); 6104 return rc; 6105 } 6106 6107 /* 6108 * Extra headroom is the size of the required DMA header 6109 * minus the size of the smallest 802.11 frame (CTS frame). 6110 */ 6111 hw->extra_tx_headroom = 6112 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); 6113 6114 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; 6115 6116 hw->queues = MWL8K_TX_WMM_QUEUES; 6117 6118 /* Set rssi values to dBm */ 6119 ieee80211_hw_set(hw, SIGNAL_DBM); 6120 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 6121 6122 /* 6123 * Ask mac80211 to not to trigger PS mode 6124 * based on PM bit of incoming frames. 6125 */ 6126 if (priv->ap_fw) 6127 ieee80211_hw_set(hw, AP_LINK_PS); 6128 6129 hw->vif_data_size = sizeof(struct mwl8k_vif); 6130 hw->sta_data_size = sizeof(struct mwl8k_sta); 6131 6132 priv->macids_used = 0; 6133 INIT_LIST_HEAD(&priv->vif_list); 6134 6135 /* Set default radio state and preamble */ 6136 priv->radio_on = false; 6137 priv->radio_short_preamble = false; 6138 6139 /* Finalize join worker */ 6140 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); 6141 /* Handle watchdog ba events */ 6142 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); 6143 /* To reload the firmware if it crashes */ 6144 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work); 6145 6146 /* TX reclaim and RX tasklets. */ 6147 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll); 6148 tasklet_disable(&priv->poll_tx_task); 6149 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll); 6150 tasklet_disable(&priv->poll_rx_task); 6151 6152 /* Power management cookie */ 6153 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4, 6154 &priv->cookie_dma, GFP_KERNEL); 6155 if (priv->cookie == NULL) 6156 return -ENOMEM; 6157 6158 mutex_init(&priv->fw_mutex); 6159 priv->fw_mutex_owner = NULL; 6160 priv->fw_mutex_depth = 0; 6161 priv->hostcmd_wait = NULL; 6162 6163 spin_lock_init(&priv->tx_lock); 6164 6165 spin_lock_init(&priv->stream_lock); 6166 6167 priv->tx_wait = NULL; 6168 6169 rc = mwl8k_probe_hw(hw); 6170 if (rc) 6171 goto err_free_cookie; 6172 6173 hw->wiphy->interface_modes = 0; 6174 6175 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) { 6176 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); 6177 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6178 hw->wiphy->iface_combinations = &ap_if_comb; 6179 hw->wiphy->n_iface_combinations = 1; 6180 } 6181 6182 if (priv->sta_macids_supported || priv->device_info->fw_image_sta) 6183 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); 6184 6185 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST); 6186 6187 rc = ieee80211_register_hw(hw); 6188 if (rc) { 6189 wiphy_err(hw->wiphy, "Cannot register device\n"); 6190 goto err_unprobe_hw; 6191 } 6192 6193 return 0; 6194 6195 err_unprobe_hw: 6196 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6197 mwl8k_txq_deinit(hw, i); 6198 mwl8k_rxq_deinit(hw, 0); 6199 6200 err_free_cookie: 6201 if (priv->cookie != NULL) 6202 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, 6203 priv->cookie_dma); 6204 6205 return rc; 6206 } 6207 static int mwl8k_probe(struct pci_dev *pdev, 6208 const struct pci_device_id *id) 6209 { 6210 static int printed_version; 6211 struct ieee80211_hw *hw; 6212 struct mwl8k_priv *priv; 6213 struct mwl8k_device_info *di; 6214 int rc; 6215 6216 if (!printed_version) { 6217 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); 6218 printed_version = 1; 6219 } 6220 6221 6222 rc = pci_enable_device(pdev); 6223 if (rc) { 6224 printk(KERN_ERR "%s: Cannot enable new PCI device\n", 6225 MWL8K_NAME); 6226 return rc; 6227 } 6228 6229 rc = pci_request_regions(pdev, MWL8K_NAME); 6230 if (rc) { 6231 printk(KERN_ERR "%s: Cannot obtain PCI resources\n", 6232 MWL8K_NAME); 6233 goto err_disable_device; 6234 } 6235 6236 pci_set_master(pdev); 6237 6238 6239 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); 6240 if (hw == NULL) { 6241 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); 6242 rc = -ENOMEM; 6243 goto err_free_reg; 6244 } 6245 6246 SET_IEEE80211_DEV(hw, &pdev->dev); 6247 pci_set_drvdata(pdev, hw); 6248 6249 priv = hw->priv; 6250 priv->hw = hw; 6251 priv->pdev = pdev; 6252 priv->device_info = &mwl8k_info_tbl[id->driver_data]; 6253 6254 if (id->driver_data == MWL8764) 6255 priv->is_8764 = true; 6256 6257 priv->sram = pci_iomap(pdev, 0, 0x10000); 6258 if (priv->sram == NULL) { 6259 wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); 6260 rc = -EIO; 6261 goto err_iounmap; 6262 } 6263 6264 /* 6265 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. 6266 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. 6267 */ 6268 priv->regs = pci_iomap(pdev, 1, 0x10000); 6269 if (priv->regs == NULL) { 6270 priv->regs = pci_iomap(pdev, 2, 0x10000); 6271 if (priv->regs == NULL) { 6272 wiphy_err(hw->wiphy, "Cannot map device registers\n"); 6273 rc = -EIO; 6274 goto err_iounmap; 6275 } 6276 } 6277 6278 /* 6279 * Choose the initial fw image depending on user input. If a second 6280 * image is available, make it the alternative image that will be 6281 * loaded if the first one fails. 6282 */ 6283 init_completion(&priv->firmware_loading_complete); 6284 di = priv->device_info; 6285 if (ap_mode_default && di->fw_image_ap) { 6286 priv->fw_pref = di->fw_image_ap; 6287 priv->fw_alt = di->fw_image_sta; 6288 } else if (!ap_mode_default && di->fw_image_sta) { 6289 priv->fw_pref = di->fw_image_sta; 6290 priv->fw_alt = di->fw_image_ap; 6291 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { 6292 printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); 6293 priv->fw_pref = di->fw_image_sta; 6294 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { 6295 printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); 6296 priv->fw_pref = di->fw_image_ap; 6297 } 6298 rc = mwl8k_init_firmware(hw, priv->fw_pref, true); 6299 if (rc) 6300 goto err_stop_firmware; 6301 6302 priv->hw_restart_in_progress = false; 6303 6304 priv->running_bsses = 0; 6305 6306 return rc; 6307 6308 err_stop_firmware: 6309 mwl8k_hw_reset(priv); 6310 6311 err_iounmap: 6312 if (priv->regs != NULL) 6313 pci_iounmap(pdev, priv->regs); 6314 6315 if (priv->sram != NULL) 6316 pci_iounmap(pdev, priv->sram); 6317 6318 ieee80211_free_hw(hw); 6319 6320 err_free_reg: 6321 pci_release_regions(pdev); 6322 6323 err_disable_device: 6324 pci_disable_device(pdev); 6325 6326 return rc; 6327 } 6328 6329 static void mwl8k_remove(struct pci_dev *pdev) 6330 { 6331 struct ieee80211_hw *hw = pci_get_drvdata(pdev); 6332 struct mwl8k_priv *priv; 6333 int i; 6334 6335 if (hw == NULL) 6336 return; 6337 priv = hw->priv; 6338 6339 wait_for_completion(&priv->firmware_loading_complete); 6340 6341 if (priv->fw_state == FW_STATE_ERROR) { 6342 mwl8k_hw_reset(priv); 6343 goto unmap; 6344 } 6345 6346 ieee80211_stop_queues(hw); 6347 6348 ieee80211_unregister_hw(hw); 6349 6350 /* Remove TX reclaim and RX tasklets. */ 6351 tasklet_kill(&priv->poll_tx_task); 6352 tasklet_kill(&priv->poll_rx_task); 6353 6354 /* Stop hardware */ 6355 mwl8k_hw_reset(priv); 6356 6357 /* Return all skbs to mac80211 */ 6358 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6359 mwl8k_txq_reclaim(hw, i, INT_MAX, 1); 6360 6361 for (i = 0; i < mwl8k_tx_queues(priv); i++) 6362 mwl8k_txq_deinit(hw, i); 6363 6364 mwl8k_rxq_deinit(hw, 0); 6365 6366 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma); 6367 6368 unmap: 6369 pci_iounmap(pdev, priv->regs); 6370 pci_iounmap(pdev, priv->sram); 6371 ieee80211_free_hw(hw); 6372 pci_release_regions(pdev); 6373 pci_disable_device(pdev); 6374 } 6375 6376 static struct pci_driver mwl8k_driver = { 6377 .name = MWL8K_NAME, 6378 .id_table = mwl8k_pci_id_table, 6379 .probe = mwl8k_probe, 6380 .remove = mwl8k_remove, 6381 }; 6382 6383 module_pci_driver(mwl8k_driver); 6384 6385 MODULE_DESCRIPTION(MWL8K_DESC); 6386 MODULE_VERSION(MWL8K_VERSION); 6387 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); 6388 MODULE_LICENSE("GPL"); 6389