drivers/net/wireless/mwl8k.c

   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/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.13"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 struct rxd_ops {
 105         int rxd_size;
 106         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 107         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 108         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 109                            __le16 *qos, s8 *noise);
 110 };
 111
 112 struct mwl8k_device_info {
 113         char *part_name;
 114         char *helper_image;
 115         char *fw_image_sta;
 116         char *fw_image_ap;
 117         struct rxd_ops *ap_rxd_ops;
 118         u32 fw_api_ap;
 119 };
 120
 121 struct mwl8k_rx_queue {
 122         int rxd_count;
 123
 124         /* hw receives here */
 125         int head;
 126
 127         /* refill descs here */
 128         int tail;
 129
 130         void *rxd;
 131         dma_addr_t rxd_dma;
 132         struct {
 133                 struct sk_buff *skb;
 134                 DEFINE_DMA_UNMAP_ADDR(dma);
 135         } *buf;
 136 };
 137
 138 struct mwl8k_tx_queue {
 139         /* hw transmits here */
 140         int head;
 141
 142         /* sw appends here */
 143         int tail;
 144
 145         unsigned int len;
 146         struct mwl8k_tx_desc *txd;
 147         dma_addr_t txd_dma;
 148         struct sk_buff **skb;
 149 };
 150
 151 enum {
 152         AMPDU_NO_STREAM,
 153         AMPDU_STREAM_NEW,
 154         AMPDU_STREAM_IN_PROGRESS,
 155         AMPDU_STREAM_ACTIVE,
 156 };
 157
 158 struct mwl8k_ampdu_stream {
 159         struct ieee80211_sta *sta;
 160         u8 tid;
 161         u8 state;
 162         u8 idx;
 163         u8 txq_idx; /* index of this stream in priv->txq */
 164 };
 165
 166 struct mwl8k_priv {
 167         struct ieee80211_hw *hw;
 168         struct pci_dev *pdev;
 169         int irq;
 170
 171         struct mwl8k_device_info *device_info;
 172
 173         void __iomem *sram;
 174         void __iomem *regs;
 175
 176         /* firmware */
 177         const struct firmware *fw_helper;
 178         const struct firmware *fw_ucode;
 179
 180         /* hardware/firmware parameters */
 181         bool ap_fw;
 182         struct rxd_ops *rxd_ops;
 183         struct ieee80211_supported_band band_24;
 184         struct ieee80211_channel channels_24[14];
 185         struct ieee80211_rate rates_24[14];
 186         struct ieee80211_supported_band band_50;
 187         struct ieee80211_channel channels_50[4];
 188         struct ieee80211_rate rates_50[9];
 189         u32 ap_macids_supported;
 190         u32 sta_macids_supported;
 191
 192         /* Ampdu stream information */
 193         u8 num_ampdu_queues;
 194         spinlock_t stream_lock;
 195         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 196         struct work_struct watchdog_ba_handle;
 197
 198         /* firmware access */
 199         struct mutex fw_mutex;
 200         struct task_struct *fw_mutex_owner;
 201         struct task_struct *hw_restart_owner;
 202         int fw_mutex_depth;
 203         struct completion *hostcmd_wait;
 204
 205         /* lock held over TX and TX reap */
 206         spinlock_t tx_lock;
 207
 208         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 209         struct completion *tx_wait;
 210
 211         /* List of interfaces.  */
 212         u32 macids_used;
 213         struct list_head vif_list;
 214
 215         /* power management status cookie from firmware */
 216         u32 *cookie;
 217         dma_addr_t cookie_dma;
 218
 219         u16 num_mcaddrs;
 220         u8 hw_rev;
 221         u32 fw_rev;
 222
 223         /*
 224          * Running count of TX packets in flight, to avoid
 225          * iterating over the transmit rings each time.
 226          */
 227         int pending_tx_pkts;
 228
 229         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 230         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 231         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 232
 233         bool radio_on;
 234         bool radio_short_preamble;
 235         bool sniffer_enabled;
 236         bool wmm_enabled;
 237
 238         /* XXX need to convert this to handle multiple interfaces */
 239         bool capture_beacon;
 240         u8 capture_bssid[ETH_ALEN];
 241         struct sk_buff *beacon_skb;
 242
 243         /*
 244          * This FJ worker has to be global as it is scheduled from the
 245          * RX handler.  At this point we don't know which interface it
 246          * belongs to until the list of bssids waiting to complete join
 247          * is checked.
 248          */
 249         struct work_struct finalize_join_worker;
 250
 251         /* Tasklet to perform TX reclaim.  */
 252         struct tasklet_struct poll_tx_task;
 253
 254         /* Tasklet to perform RX.  */
 255         struct tasklet_struct poll_rx_task;
 256
 257         /* Most recently reported noise in dBm */
 258         s8 noise;
 259
 260         /*
 261          * preserve the queue configurations so they can be restored if/when
 262          * the firmware image is swapped.
 263          */
 264         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 265
 266         /* To perform the task of reloading the firmware */
 267         struct work_struct fw_reload;
 268         bool hw_restart_in_progress;
 269
 270         /* async firmware loading state */
 271         unsigned fw_state;
 272         char *fw_pref;
 273         char *fw_alt;
 274         struct completion firmware_loading_complete;
 275 };
 276
 277 #define MAX_WEP_KEY_LEN         13
 278 #define NUM_WEP_KEYS            4
 279
 280 /* Per interface specific private data */
 281 struct mwl8k_vif {
 282         struct list_head list;
 283         struct ieee80211_vif *vif;
 284
 285         /* Firmware macid for this vif.  */
 286         int macid;
 287
 288         /* Non AMPDU sequence number assigned by driver.  */
 289         u16 seqno;
 290
 291         /* Saved WEP keys */
 292         struct {
 293                 u8 enabled;
 294                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 295         } wep_key_conf[NUM_WEP_KEYS];
 296
 297         /* BSSID */
 298         u8 bssid[ETH_ALEN];
 299
 300         /* A flag to indicate is HW crypto is enabled for this bssid */
 301         bool is_hw_crypto_enabled;
 302 };
 303 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 304 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 305
 306 struct tx_traffic_info {
 307         u32 start_time;
 308         u32 pkts;
 309 };
 310
 311 #define MWL8K_MAX_TID 8
 312 struct mwl8k_sta {
 313         /* Index into station database. Returned by UPDATE_STADB.  */
 314         u8 peer_id;
 315         u8 is_ampdu_allowed;
 316         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 317 };
 318 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 319
 320 static const struct ieee80211_channel mwl8k_channels_24[] = {
 321         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
 322         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
 323         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
 324         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
 325         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
 326         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
 327         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
 328         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
 329         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
 330         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
 331         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
 332         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
 333         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
 334         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
 335 };
 336
 337 static const struct ieee80211_rate mwl8k_rates_24[] = {
 338         { .bitrate = 10, .hw_value = 2, },
 339         { .bitrate = 20, .hw_value = 4, },
 340         { .bitrate = 55, .hw_value = 11, },
 341         { .bitrate = 110, .hw_value = 22, },
 342         { .bitrate = 220, .hw_value = 44, },
 343         { .bitrate = 60, .hw_value = 12, },
 344         { .bitrate = 90, .hw_value = 18, },
 345         { .bitrate = 120, .hw_value = 24, },
 346         { .bitrate = 180, .hw_value = 36, },
 347         { .bitrate = 240, .hw_value = 48, },
 348         { .bitrate = 360, .hw_value = 72, },
 349         { .bitrate = 480, .hw_value = 96, },
 350         { .bitrate = 540, .hw_value = 108, },
 351         { .bitrate = 720, .hw_value = 144, },
 352 };
 353
 354 static const struct ieee80211_channel mwl8k_channels_50[] = {
 355         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
 356         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
 357         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
 358         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
 359 };
 360
 361 static const struct ieee80211_rate mwl8k_rates_50[] = {
 362         { .bitrate = 60, .hw_value = 12, },
 363         { .bitrate = 90, .hw_value = 18, },
 364         { .bitrate = 120, .hw_value = 24, },
 365         { .bitrate = 180, .hw_value = 36, },
 366         { .bitrate = 240, .hw_value = 48, },
 367         { .bitrate = 360, .hw_value = 72, },
 368         { .bitrate = 480, .hw_value = 96, },
 369         { .bitrate = 540, .hw_value = 108, },
 370         { .bitrate = 720, .hw_value = 144, },
 371 };
 372
 373 /* Set or get info from Firmware */
 374 #define MWL8K_CMD_GET                   0x0000
 375 #define MWL8K_CMD_SET                   0x0001
 376 #define MWL8K_CMD_SET_LIST              0x0002
 377
 378 /* Firmware command codes */
 379 #define MWL8K_CMD_CODE_DNLD             0x0001
 380 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 381 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 382 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 383 #define MWL8K_CMD_GET_STAT              0x0014
 384 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 385 #define MWL8K_CMD_RF_TX_POWER           0x001e
 386 #define MWL8K_CMD_TX_POWER              0x001f
 387 #define MWL8K_CMD_RF_ANTENNA            0x0020
 388 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 389 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 390 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 391 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 392 #define MWL8K_CMD_SET_AID               0x010d
 393 #define MWL8K_CMD_SET_RATE              0x0110
 394 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 395 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 396 #define MWL8K_CMD_SET_SLOT              0x0114
 397 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 398 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 399 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 400 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 401 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 402 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 403 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 404 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 405 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 406 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 407 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 408 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 409 #define MWL8K_CMD_UPDATE_STADB          0x1123
 410 #define MWL8K_CMD_BASTREAM              0x1125
 411
 412 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 413 {
 414         u16 command = le16_to_cpu(cmd);
 415
 416 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 417                                         snprintf(buf, bufsize, "%s", #x);\
 418                                         return buf;\
 419                                         } while (0)
 420         switch (command & ~0x8000) {
 421                 MWL8K_CMDNAME(CODE_DNLD);
 422                 MWL8K_CMDNAME(GET_HW_SPEC);
 423                 MWL8K_CMDNAME(SET_HW_SPEC);
 424                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 425                 MWL8K_CMDNAME(GET_STAT);
 426                 MWL8K_CMDNAME(RADIO_CONTROL);
 427                 MWL8K_CMDNAME(RF_TX_POWER);
 428                 MWL8K_CMDNAME(TX_POWER);
 429                 MWL8K_CMDNAME(RF_ANTENNA);
 430                 MWL8K_CMDNAME(SET_BEACON);
 431                 MWL8K_CMDNAME(SET_PRE_SCAN);
 432                 MWL8K_CMDNAME(SET_POST_SCAN);
 433                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 434                 MWL8K_CMDNAME(SET_AID);
 435                 MWL8K_CMDNAME(SET_RATE);
 436                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 437                 MWL8K_CMDNAME(RTS_THRESHOLD);
 438                 MWL8K_CMDNAME(SET_SLOT);
 439                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 440                 MWL8K_CMDNAME(SET_WMM_MODE);
 441                 MWL8K_CMDNAME(MIMO_CONFIG);
 442                 MWL8K_CMDNAME(USE_FIXED_RATE);
 443                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 444                 MWL8K_CMDNAME(SET_MAC_ADDR);
 445                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 446                 MWL8K_CMDNAME(BSS_START);
 447                 MWL8K_CMDNAME(SET_NEW_STN);
 448                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 449                 MWL8K_CMDNAME(UPDATE_STADB);
 450                 MWL8K_CMDNAME(BASTREAM);
 451                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 452         default:
 453                 snprintf(buf, bufsize, "0x%x", cmd);
 454         }
 455 #undef MWL8K_CMDNAME
 456
 457         return buf;
 458 }
 459
 460 /* Hardware and firmware reset */
 461 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 462 {
 463         iowrite32(MWL8K_H2A_INT_RESET,
 464                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 465         iowrite32(MWL8K_H2A_INT_RESET,
 466                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 467         msleep(20);
 468 }
 469
 470 /* Release fw image */
 471 static void mwl8k_release_fw(const struct firmware **fw)
 472 {
 473         if (*fw == NULL)
 474                 return;
 475         release_firmware(*fw);
 476         *fw = NULL;
 477 }
 478
 479 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 480 {
 481         mwl8k_release_fw(&priv->fw_ucode);
 482         mwl8k_release_fw(&priv->fw_helper);
 483 }
 484
 485 /* states for asynchronous f/w loading */
 486 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 487 enum {
 488         FW_STATE_INIT = 0,
 489         FW_STATE_LOADING_PREF,
 490         FW_STATE_LOADING_ALT,
 491         FW_STATE_ERROR,
 492 };
 493
 494 /* Request fw image */
 495 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 496                             const char *fname, const struct firmware **fw,
 497                             bool nowait)
 498 {
 499         /* release current image */
 500         if (*fw != NULL)
 501                 mwl8k_release_fw(fw);
 502
 503         if (nowait)
 504                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 505                                                &priv->pdev->dev, GFP_KERNEL,
 506                                                priv, mwl8k_fw_state_machine);
 507         else
 508                 return request_firmware(fw, fname, &priv->pdev->dev);
 509 }
 510
 511 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 512                                   bool nowait)
 513 {
 514         struct mwl8k_device_info *di = priv->device_info;
 515         int rc;
 516
 517         if (di->helper_image != NULL) {
 518                 if (nowait)
 519                         rc = mwl8k_request_fw(priv, di->helper_image,
 520                                               &priv->fw_helper, true);
 521                 else
 522                         rc = mwl8k_request_fw(priv, di->helper_image,
 523                                               &priv->fw_helper, false);
 524                 if (rc)
 525                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 526                                pci_name(priv->pdev), di->helper_image);
 527
 528                 if (rc || nowait)
 529                         return rc;
 530         }
 531
 532         if (nowait) {
 533                 /*
 534                  * if we get here, no helper image is needed.  Skip the
 535                  * FW_STATE_INIT state.
 536                  */
 537                 priv->fw_state = FW_STATE_LOADING_PREF;
 538                 rc = mwl8k_request_fw(priv, fw_image,
 539                                       &priv->fw_ucode,
 540                                       true);
 541         } else
 542                 rc = mwl8k_request_fw(priv, fw_image,
 543                                       &priv->fw_ucode, false);
 544         if (rc) {
 545                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 546                        pci_name(priv->pdev), fw_image);
 547                 mwl8k_release_fw(&priv->fw_helper);
 548                 return rc;
 549         }
 550
 551         return 0;
 552 }
 553
 554 struct mwl8k_cmd_pkt {
 555         __le16  code;
 556         __le16  length;
 557         __u8    seq_num;
 558         __u8    macid;
 559         __le16  result;
 560         char    payload[0];
 561 } __packed;
 562
 563 /*
 564  * Firmware loading.
 565  */
 566 static int
 567 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 568 {
 569         void __iomem *regs = priv->regs;
 570         dma_addr_t dma_addr;
 571         int loops;
 572
 573         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 574         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 575                 return -ENOMEM;
 576
 577         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 578         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 579         iowrite32(MWL8K_H2A_INT_DOORBELL,
 580                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 581         iowrite32(MWL8K_H2A_INT_DUMMY,
 582                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 583
 584         loops = 1000;
 585         do {
 586                 u32 int_code;
 587
 588                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 589                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 590                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 591                         break;
 592                 }
 593
 594                 cond_resched();
 595                 udelay(1);
 596         } while (--loops);
 597
 598         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 599
 600         return loops ? 0 : -ETIMEDOUT;
 601 }
 602
 603 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 604                                 const u8 *data, size_t length)
 605 {
 606         struct mwl8k_cmd_pkt *cmd;
 607         int done;
 608         int rc = 0;
 609
 610         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 611         if (cmd == NULL)
 612                 return -ENOMEM;
 613
 614         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 615         cmd->seq_num = 0;
 616         cmd->macid = 0;
 617         cmd->result = 0;
 618
 619         done = 0;
 620         while (length) {
 621                 int block_size = length > 256 ? 256 : length;
 622
 623                 memcpy(cmd->payload, data + done, block_size);
 624                 cmd->length = cpu_to_le16(block_size);
 625
 626                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 627                                                 sizeof(*cmd) + block_size);
 628                 if (rc)
 629                         break;
 630
 631                 done += block_size;
 632                 length -= block_size;
 633         }
 634
 635         if (!rc) {
 636                 cmd->length = 0;
 637                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 638         }
 639
 640         kfree(cmd);
 641
 642         return rc;
 643 }
 644
 645 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 646                                 const u8 *data, size_t length)
 647 {
 648         unsigned char *buffer;
 649         int may_continue, rc = 0;
 650         u32 done, prev_block_size;
 651
 652         buffer = kmalloc(1024, GFP_KERNEL);
 653         if (buffer == NULL)
 654                 return -ENOMEM;
 655
 656         done = 0;
 657         prev_block_size = 0;
 658         may_continue = 1000;
 659         while (may_continue > 0) {
 660                 u32 block_size;
 661
 662                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 663                 if (block_size & 1) {
 664                         block_size &= ~1;
 665                         may_continue--;
 666                 } else {
 667                         done += prev_block_size;
 668                         length -= prev_block_size;
 669                 }
 670
 671                 if (block_size > 1024 || block_size > length) {
 672                         rc = -EOVERFLOW;
 673                         break;
 674                 }
 675
 676                 if (length == 0) {
 677                         rc = 0;
 678                         break;
 679                 }
 680
 681                 if (block_size == 0) {
 682                         rc = -EPROTO;
 683                         may_continue--;
 684                         udelay(1);
 685                         continue;
 686                 }
 687
 688                 prev_block_size = block_size;
 689                 memcpy(buffer, data + done, block_size);
 690
 691                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 692                 if (rc)
 693                         break;
 694         }
 695
 696         if (!rc && length != 0)
 697                 rc = -EREMOTEIO;
 698
 699         kfree(buffer);
 700
 701         return rc;
 702 }
 703
 704 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 705 {
 706         struct mwl8k_priv *priv = hw->priv;
 707         const struct firmware *fw = priv->fw_ucode;
 708         int rc;
 709         int loops;
 710
 711         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 712                 const struct firmware *helper = priv->fw_helper;
 713
 714                 if (helper == NULL) {
 715                         printk(KERN_ERR "%s: helper image needed but none "
 716                                "given\n", pci_name(priv->pdev));
 717                         return -EINVAL;
 718                 }
 719
 720                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 721                 if (rc) {
 722                         printk(KERN_ERR "%s: unable to load firmware "
 723                                "helper image\n", pci_name(priv->pdev));
 724                         return rc;
 725                 }
 726                 msleep(20);
 727
 728                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 729         } else {
 730                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 731         }
 732
 733         if (rc) {
 734                 printk(KERN_ERR "%s: unable to load firmware image\n",
 735                        pci_name(priv->pdev));
 736                 return rc;
 737         }
 738
 739         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 740
 741         loops = 500000;
 742         do {
 743                 u32 ready_code;
 744
 745                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 746                 if (ready_code == MWL8K_FWAP_READY) {
 747                         priv->ap_fw = true;
 748                         break;
 749                 } else if (ready_code == MWL8K_FWSTA_READY) {
 750                         priv->ap_fw = false;
 751                         break;
 752                 }
 753
 754                 cond_resched();
 755                 udelay(1);
 756         } while (--loops);
 757
 758         return loops ? 0 : -ETIMEDOUT;
 759 }
 760
 761
 762 /* DMA header used by firmware and hardware.  */
 763 struct mwl8k_dma_data {
 764         __le16 fwlen;
 765         struct ieee80211_hdr wh;
 766         char data[0];
 767 } __packed;
 768
 769 /* Routines to add/remove DMA header from skb.  */
 770 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 771 {
 772         struct mwl8k_dma_data *tr;
 773         int hdrlen;
 774
 775         tr = (struct mwl8k_dma_data *)skb->data;
 776         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 777
 778         if (hdrlen != sizeof(tr->wh)) {
 779                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 780                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 781                         *((__le16 *)(tr->data - 2)) = qos;
 782                 } else {
 783                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 784                 }
 785         }
 786
 787         if (hdrlen != sizeof(*tr))
 788                 skb_pull(skb, sizeof(*tr) - hdrlen);
 789 }
 790
 791 #define REDUCED_TX_HEADROOM     8
 792
 793 static void
 794 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 795                                                 int head_pad, int tail_pad)
 796 {
 797         struct ieee80211_hdr *wh;
 798         int hdrlen;
 799         int reqd_hdrlen;
 800         struct mwl8k_dma_data *tr;
 801
 802         /*
 803          * Add a firmware DMA header; the firmware requires that we
 804          * present a 2-byte payload length followed by a 4-address
 805          * header (without QoS field), followed (optionally) by any
 806          * WEP/ExtIV header (but only filled in for CCMP).
 807          */
 808         wh = (struct ieee80211_hdr *)skb->data;
 809
 810         hdrlen = ieee80211_hdrlen(wh->frame_control);
 811
 812         /*
 813          * Check if skb_resize is required because of
 814          * tx_headroom adjustment.
 815          */
 816         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 817                                                 + REDUCED_TX_HEADROOM))) {
 818                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 819
 820                         wiphy_err(priv->hw->wiphy,
 821                                         "Failed to reallocate TX buffer\n");
 822                         return;
 823                 }
 824                 skb->truesize += REDUCED_TX_HEADROOM;
 825         }
 826
 827         reqd_hdrlen = sizeof(*tr) + head_pad;
 828
 829         if (hdrlen != reqd_hdrlen)
 830                 skb_push(skb, reqd_hdrlen - hdrlen);
 831
 832         if (ieee80211_is_data_qos(wh->frame_control))
 833                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 834
 835         tr = (struct mwl8k_dma_data *)skb->data;
 836         if (wh != &tr->wh)
 837                 memmove(&tr->wh, wh, hdrlen);
 838         if (hdrlen != sizeof(tr->wh))
 839                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 840
 841         /*
 842          * Firmware length is the length of the fully formed "802.11
 843          * payload".  That is, everything except for the 802.11 header.
 844          * This includes all crypto material including the MIC.
 845          */
 846         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 847 }
 848
 849 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 850                 struct sk_buff *skb)
 851 {
 852         struct ieee80211_hdr *wh;
 853         struct ieee80211_tx_info *tx_info;
 854         struct ieee80211_key_conf *key_conf;
 855         int data_pad;
 856         int head_pad = 0;
 857
 858         wh = (struct ieee80211_hdr *)skb->data;
 859
 860         tx_info = IEEE80211_SKB_CB(skb);
 861
 862         key_conf = NULL;
 863         if (ieee80211_is_data(wh->frame_control))
 864                 key_conf = tx_info->control.hw_key;
 865
 866         /*
 867          * Make sure the packet header is in the DMA header format (4-address
 868          * without QoS), and add head & tail padding when HW crypto is enabled.
 869          *
 870          * We have the following trailer padding requirements:
 871          * - WEP: 4 trailer bytes (ICV)
 872          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 873          * - CCMP: 8 trailer bytes (MIC)
 874          */
 875         data_pad = 0;
 876         if (key_conf != NULL) {
 877                 head_pad = key_conf->iv_len;
 878                 switch (key_conf->cipher) {
 879                 case WLAN_CIPHER_SUITE_WEP40:
 880                 case WLAN_CIPHER_SUITE_WEP104:
 881                         data_pad = 4;
 882                         break;
 883                 case WLAN_CIPHER_SUITE_TKIP:
 884                         data_pad = 12;
 885                         break;
 886                 case WLAN_CIPHER_SUITE_CCMP:
 887                         data_pad = 8;
 888                         break;
 889                 }
 890         }
 891         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 892 }
 893
 894 /*
 895  * Packet reception for 88w8366 AP firmware.
 896  */
 897 struct mwl8k_rxd_8366_ap {
 898         __le16 pkt_len;
 899         __u8 sq2;
 900         __u8 rate;
 901         __le32 pkt_phys_addr;
 902         __le32 next_rxd_phys_addr;
 903         __le16 qos_control;
 904         __le16 htsig2;
 905         __le32 hw_rssi_info;
 906         __le32 hw_noise_floor_info;
 907         __u8 noise_floor;
 908         __u8 pad0[3];
 909         __u8 rssi;
 910         __u8 rx_status;
 911         __u8 channel;
 912         __u8 rx_ctrl;
 913 } __packed;
 914
 915 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 916 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 917 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 918
 919 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 920
 921 /* 8366 AP rx_status bits */
 922 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 923 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 924 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 925 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 926 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 927
 928 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 929 {
 930         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 931
 932         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 933         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 934 }
 935
 936 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 937 {
 938         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 939
 940         rxd->pkt_len = cpu_to_le16(len);
 941         rxd->pkt_phys_addr = cpu_to_le32(addr);
 942         wmb();
 943         rxd->rx_ctrl = 0;
 944 }
 945
 946 static int
 947 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 948                           __le16 *qos, s8 *noise)
 949 {
 950         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 951
 952         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 953                 return -1;
 954         rmb();
 955
 956         memset(status, 0, sizeof(*status));
 957
 958         status->signal = -rxd->rssi;
 959         *noise = -rxd->noise_floor;
 960
 961         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 962                 status->flag |= RX_FLAG_HT;
 963                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 964                         status->flag |= RX_FLAG_40MHZ;
 965                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 966         } else {
 967                 int i;
 968
 969                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 970                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 971                                 status->rate_idx = i;
 972                                 break;
 973                         }
 974                 }
 975         }
 976
 977         if (rxd->channel > 14) {
 978                 status->band = IEEE80211_BAND_5GHZ;
 979                 if (!(status->flag & RX_FLAG_HT))
 980                         status->rate_idx -= 5;
 981         } else {
 982                 status->band = IEEE80211_BAND_2GHZ;
 983         }
 984         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 985                                                       status->band);
 986
 987         *qos = rxd->qos_control;
 988
 989         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 990             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 991             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 992                 status->flag |= RX_FLAG_MMIC_ERROR;
 993
 994         return le16_to_cpu(rxd->pkt_len);
 995 }
 996
 997 static struct rxd_ops rxd_8366_ap_ops = {
 998         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 999         .rxd_init       = mwl8k_rxd_8366_ap_init,
1000         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1001         .rxd_process    = mwl8k_rxd_8366_ap_process,
1002 };
1003
1004 /*
1005  * Packet reception for STA firmware.
1006  */
1007 struct mwl8k_rxd_sta {
1008         __le16 pkt_len;
1009         __u8 link_quality;
1010         __u8 noise_level;
1011         __le32 pkt_phys_addr;
1012         __le32 next_rxd_phys_addr;
1013         __le16 qos_control;
1014         __le16 rate_info;
1015         __le32 pad0[4];
1016         __u8 rssi;
1017         __u8 channel;
1018         __le16 pad1;
1019         __u8 rx_ctrl;
1020         __u8 rx_status;
1021         __u8 pad2[2];
1022 } __packed;
1023
1024 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1025 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1026 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1027 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1028 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1029 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1030
1031 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1032 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1033 /* ICV=0 or MIC=1 */
1034 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1035 /* Key is uploaded only in failure case */
1036 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1037
1038 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1039 {
1040         struct mwl8k_rxd_sta *rxd = _rxd;
1041
1042         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1043         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1044 }
1045
1046 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1047 {
1048         struct mwl8k_rxd_sta *rxd = _rxd;
1049
1050         rxd->pkt_len = cpu_to_le16(len);
1051         rxd->pkt_phys_addr = cpu_to_le32(addr);
1052         wmb();
1053         rxd->rx_ctrl = 0;
1054 }
1055
1056 static int
1057 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1058                        __le16 *qos, s8 *noise)
1059 {
1060         struct mwl8k_rxd_sta *rxd = _rxd;
1061         u16 rate_info;
1062
1063         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1064                 return -1;
1065         rmb();
1066
1067         rate_info = le16_to_cpu(rxd->rate_info);
1068
1069         memset(status, 0, sizeof(*status));
1070
1071         status->signal = -rxd->rssi;
1072         *noise = -rxd->noise_level;
1073         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1074         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1075
1076         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1077                 status->flag |= RX_FLAG_SHORTPRE;
1078         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1079                 status->flag |= RX_FLAG_40MHZ;
1080         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1081                 status->flag |= RX_FLAG_SHORT_GI;
1082         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1083                 status->flag |= RX_FLAG_HT;
1084
1085         if (rxd->channel > 14) {
1086                 status->band = IEEE80211_BAND_5GHZ;
1087                 if (!(status->flag & RX_FLAG_HT))
1088                         status->rate_idx -= 5;
1089         } else {
1090                 status->band = IEEE80211_BAND_2GHZ;
1091         }
1092         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1093                                                       status->band);
1094
1095         *qos = rxd->qos_control;
1096         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1097             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1098                 status->flag |= RX_FLAG_MMIC_ERROR;
1099
1100         return le16_to_cpu(rxd->pkt_len);
1101 }
1102
1103 static struct rxd_ops rxd_sta_ops = {
1104         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1105         .rxd_init       = mwl8k_rxd_sta_init,
1106         .rxd_refill     = mwl8k_rxd_sta_refill,
1107         .rxd_process    = mwl8k_rxd_sta_process,
1108 };
1109
1110
1111 #define MWL8K_RX_DESCS          256
1112 #define MWL8K_RX_MAXSZ          3800
1113
1114 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1115 {
1116         struct mwl8k_priv *priv = hw->priv;
1117         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1118         int size;
1119         int i;
1120
1121         rxq->rxd_count = 0;
1122         rxq->head = 0;
1123         rxq->tail = 0;
1124
1125         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1126
1127         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1128         if (rxq->rxd == NULL) {
1129                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1130                 return -ENOMEM;
1131         }
1132         memset(rxq->rxd, 0, size);
1133
1134         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1135         if (rxq->buf == NULL) {
1136                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1137                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1138                 return -ENOMEM;
1139         }
1140
1141         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1142                 int desc_size;
1143                 void *rxd;
1144                 int nexti;
1145                 dma_addr_t next_dma_addr;
1146
1147                 desc_size = priv->rxd_ops->rxd_size;
1148                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1149
1150                 nexti = i + 1;
1151                 if (nexti == MWL8K_RX_DESCS)
1152                         nexti = 0;
1153                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1154
1155                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1156         }
1157
1158         return 0;
1159 }
1160
1161 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1162 {
1163         struct mwl8k_priv *priv = hw->priv;
1164         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1165         int refilled;
1166
1167         refilled = 0;
1168         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1169                 struct sk_buff *skb;
1170                 dma_addr_t addr;
1171                 int rx;
1172                 void *rxd;
1173
1174                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1175                 if (skb == NULL)
1176                         break;
1177
1178                 addr = pci_map_single(priv->pdev, skb->data,
1179                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1180
1181                 rxq->rxd_count++;
1182                 rx = rxq->tail++;
1183                 if (rxq->tail == MWL8K_RX_DESCS)
1184                         rxq->tail = 0;
1185                 rxq->buf[rx].skb = skb;
1186                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1187
1188                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1189                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1190
1191                 refilled++;
1192         }
1193
1194         return refilled;
1195 }
1196
1197 /* Must be called only when the card's reception is completely halted */
1198 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1199 {
1200         struct mwl8k_priv *priv = hw->priv;
1201         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202         int i;
1203
1204         if (rxq->rxd == NULL)
1205                 return;
1206
1207         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1208                 if (rxq->buf[i].skb != NULL) {
1209                         pci_unmap_single(priv->pdev,
1210                                          dma_unmap_addr(&rxq->buf[i], dma),
1211                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1212                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1213
1214                         kfree_skb(rxq->buf[i].skb);
1215                         rxq->buf[i].skb = NULL;
1216                 }
1217         }
1218
1219         kfree(rxq->buf);
1220         rxq->buf = NULL;
1221
1222         pci_free_consistent(priv->pdev,
1223                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1224                             rxq->rxd, rxq->rxd_dma);
1225         rxq->rxd = NULL;
1226 }
1227
1228
1229 /*
1230  * Scan a list of BSSIDs to process for finalize join.
1231  * Allows for extension to process multiple BSSIDs.
1232  */
1233 static inline int
1234 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1235 {
1236         return priv->capture_beacon &&
1237                 ieee80211_is_beacon(wh->frame_control) &&
1238                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1239 }
1240
1241 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1242                                      struct sk_buff *skb)
1243 {
1244         struct mwl8k_priv *priv = hw->priv;
1245
1246         priv->capture_beacon = false;
1247         memset(priv->capture_bssid, 0, ETH_ALEN);
1248
1249         /*
1250          * Use GFP_ATOMIC as rxq_process is called from
1251          * the primary interrupt handler, memory allocation call
1252          * must not sleep.
1253          */
1254         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1255         if (priv->beacon_skb != NULL)
1256                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1257 }
1258
1259 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1260                                                    u8 *bssid)
1261 {
1262         struct mwl8k_vif *mwl8k_vif;
1263
1264         list_for_each_entry(mwl8k_vif,
1265                             vif_list, list) {
1266                 if (memcmp(bssid, mwl8k_vif->bssid,
1267                            ETH_ALEN) == 0)
1268                         return mwl8k_vif;
1269         }
1270
1271         return NULL;
1272 }
1273
1274 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1275 {
1276         struct mwl8k_priv *priv = hw->priv;
1277         struct mwl8k_vif *mwl8k_vif = NULL;
1278         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1279         int processed;
1280
1281         processed = 0;
1282         while (rxq->rxd_count && limit--) {
1283                 struct sk_buff *skb;
1284                 void *rxd;
1285                 int pkt_len;
1286                 struct ieee80211_rx_status status;
1287                 struct ieee80211_hdr *wh;
1288                 __le16 qos;
1289
1290                 skb = rxq->buf[rxq->head].skb;
1291                 if (skb == NULL)
1292                         break;
1293
1294                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1295
1296                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1297                                                         &priv->noise);
1298                 if (pkt_len < 0)
1299                         break;
1300
1301                 rxq->buf[rxq->head].skb = NULL;
1302
1303                 pci_unmap_single(priv->pdev,
1304                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1305                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1306                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1307
1308                 rxq->head++;
1309                 if (rxq->head == MWL8K_RX_DESCS)
1310                         rxq->head = 0;
1311
1312                 rxq->rxd_count--;
1313
1314                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1315
1316                 /*
1317                  * Check for a pending join operation.  Save a
1318                  * copy of the beacon and schedule a tasklet to
1319                  * send a FINALIZE_JOIN command to the firmware.
1320                  */
1321                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1322                         mwl8k_save_beacon(hw, skb);
1323
1324                 if (ieee80211_has_protected(wh->frame_control)) {
1325
1326                         /* Check if hw crypto has been enabled for
1327                          * this bss. If yes, set the status flags
1328                          * accordingly
1329                          */
1330                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1331                                                                 wh->addr1);
1332
1333                         if (mwl8k_vif != NULL &&
1334                             mwl8k_vif->is_hw_crypto_enabled) {
1335                                 /*
1336                                  * When MMIC ERROR is encountered
1337                                  * by the firmware, payload is
1338                                  * dropped and only 32 bytes of
1339                                  * mwl8k Firmware header is sent
1340                                  * to the host.
1341                                  *
1342                                  * We need to add four bytes of
1343                                  * key information.  In it
1344                                  * MAC80211 expects keyidx set to
1345                                  * 0 for triggering Counter
1346                                  * Measure of MMIC failure.
1347                                  */
1348                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1349                                         struct mwl8k_dma_data *tr;
1350                                         tr = (struct mwl8k_dma_data *)skb->data;
1351                                         memset((void *)&(tr->data), 0, 4);
1352                                         pkt_len += 4;
1353                                 }
1354
1355                                 if (!ieee80211_is_auth(wh->frame_control))
1356                                         status.flag |= RX_FLAG_IV_STRIPPED |
1357                                                        RX_FLAG_DECRYPTED |
1358                                                        RX_FLAG_MMIC_STRIPPED;
1359                         }
1360                 }
1361
1362                 skb_put(skb, pkt_len);
1363                 mwl8k_remove_dma_header(skb, qos);
1364                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1365                 ieee80211_rx_irqsafe(hw, skb);
1366
1367                 processed++;
1368         }
1369
1370         return processed;
1371 }
1372
1373
1374 /*
1375  * Packet transmission.
1376  */
1377
1378 #define MWL8K_TXD_STATUS_OK                     0x00000001
1379 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1380 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1381 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1382 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1383
1384 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1385 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1386 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1387 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1388 #define MWL8K_QOS_EOSP                          0x0010
1389
1390 struct mwl8k_tx_desc {
1391         __le32 status;
1392         __u8 data_rate;
1393         __u8 tx_priority;
1394         __le16 qos_control;
1395         __le32 pkt_phys_addr;
1396         __le16 pkt_len;
1397         __u8 dest_MAC_addr[ETH_ALEN];
1398         __le32 next_txd_phys_addr;
1399         __le32 timestamp;
1400         __le16 rate_info;
1401         __u8 peer_id;
1402         __u8 tx_frag_cnt;
1403 } __packed;
1404
1405 #define MWL8K_TX_DESCS          128
1406
1407 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1408 {
1409         struct mwl8k_priv *priv = hw->priv;
1410         struct mwl8k_tx_queue *txq = priv->txq + index;
1411         int size;
1412         int i;
1413
1414         txq->len = 0;
1415         txq->head = 0;
1416         txq->tail = 0;
1417
1418         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1419
1420         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1421         if (txq->txd == NULL) {
1422                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1423                 return -ENOMEM;
1424         }
1425         memset(txq->txd, 0, size);
1426
1427         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1428         if (txq->skb == NULL) {
1429                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1430                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1431                 return -ENOMEM;
1432         }
1433
1434         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1435                 struct mwl8k_tx_desc *tx_desc;
1436                 int nexti;
1437
1438                 tx_desc = txq->txd + i;
1439                 nexti = (i + 1) % MWL8K_TX_DESCS;
1440
1441                 tx_desc->status = 0;
1442                 tx_desc->next_txd_phys_addr =
1443                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1444         }
1445
1446         return 0;
1447 }
1448
1449 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1450 {
1451         iowrite32(MWL8K_H2A_INT_PPA_READY,
1452                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1453         iowrite32(MWL8K_H2A_INT_DUMMY,
1454                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1455         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1456 }
1457
1458 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1459 {
1460         struct mwl8k_priv *priv = hw->priv;
1461         int i;
1462
1463         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1464                 struct mwl8k_tx_queue *txq = priv->txq + i;
1465                 int fw_owned = 0;
1466                 int drv_owned = 0;
1467                 int unused = 0;
1468                 int desc;
1469
1470                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1471                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1472                         u32 status;
1473
1474                         status = le32_to_cpu(tx_desc->status);
1475                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1476                                 fw_owned++;
1477                         else
1478                                 drv_owned++;
1479
1480                         if (tx_desc->pkt_len == 0)
1481                                 unused++;
1482                 }
1483
1484                 wiphy_err(hw->wiphy,
1485                           "txq[%d] len=%d head=%d tail=%d "
1486                           "fw_owned=%d drv_owned=%d unused=%d\n",
1487                           i,
1488                           txq->len, txq->head, txq->tail,
1489                           fw_owned, drv_owned, unused);
1490         }
1491 }
1492
1493 /*
1494  * Must be called with priv->fw_mutex held and tx queues stopped.
1495  */
1496 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1497
1498 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1499 {
1500         struct mwl8k_priv *priv = hw->priv;
1501         DECLARE_COMPLETION_ONSTACK(tx_wait);
1502         int retry;
1503         int rc;
1504
1505         might_sleep();
1506
1507         /* Since fw restart is in progress, allow only the firmware
1508          * commands from the restart code and block the other
1509          * commands since they are going to fail in any case since
1510          * the firmware has crashed
1511          */
1512         if (priv->hw_restart_in_progress) {
1513                 if (priv->hw_restart_owner == current)
1514                         return 0;
1515                 else
1516                         return -EBUSY;
1517         }
1518
1519         /*
1520          * The TX queues are stopped at this point, so this test
1521          * doesn't need to take ->tx_lock.
1522          */
1523         if (!priv->pending_tx_pkts)
1524                 return 0;
1525
1526         retry = 0;
1527         rc = 0;
1528
1529         spin_lock_bh(&priv->tx_lock);
1530         priv->tx_wait = &tx_wait;
1531         while (!rc) {
1532                 int oldcount;
1533                 unsigned long timeout;
1534
1535                 oldcount = priv->pending_tx_pkts;
1536
1537                 spin_unlock_bh(&priv->tx_lock);
1538                 timeout = wait_for_completion_timeout(&tx_wait,
1539                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1540                 spin_lock_bh(&priv->tx_lock);
1541
1542                 if (timeout) {
1543                         WARN_ON(priv->pending_tx_pkts);
1544                         if (retry)
1545                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1546                         break;
1547                 }
1548
1549                 if (priv->pending_tx_pkts < oldcount) {
1550                         wiphy_notice(hw->wiphy,
1551                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1552                                      oldcount, priv->pending_tx_pkts);
1553                         retry = 1;
1554                         continue;
1555                 }
1556
1557                 priv->tx_wait = NULL;
1558
1559                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1560                           MWL8K_TX_WAIT_TIMEOUT_MS);
1561                 mwl8k_dump_tx_rings(hw);
1562                 priv->hw_restart_in_progress = true;
1563                 ieee80211_queue_work(hw, &priv->fw_reload);
1564
1565                 rc = -ETIMEDOUT;
1566         }
1567         spin_unlock_bh(&priv->tx_lock);
1568
1569         return rc;
1570 }
1571
1572 #define MWL8K_TXD_SUCCESS(status)                               \
1573         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1574                      MWL8K_TXD_STATUS_OK_RETRY |                \
1575                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1576
1577 static int mwl8k_tid_queue_mapping(u8 tid)
1578 {
1579         BUG_ON(tid > 7);
1580
1581         switch (tid) {
1582         case 0:
1583         case 3:
1584                 return IEEE80211_AC_BE;
1585                 break;
1586         case 1:
1587         case 2:
1588                 return IEEE80211_AC_BK;
1589                 break;
1590         case 4:
1591         case 5:
1592                 return IEEE80211_AC_VI;
1593                 break;
1594         case 6:
1595         case 7:
1596                 return IEEE80211_AC_VO;
1597                 break;
1598         default:
1599                 return -1;
1600                 break;
1601         }
1602 }
1603
1604 /* The firmware will fill in the rate information
1605  * for each packet that gets queued in the hardware
1606  * and these macros will interpret that info.
1607  */
1608
1609 #define RI_FORMAT(a)              (a & 0x0001)
1610 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1611
1612 static int
1613 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1614 {
1615         struct mwl8k_priv *priv = hw->priv;
1616         struct mwl8k_tx_queue *txq = priv->txq + index;
1617         int processed;
1618
1619         processed = 0;
1620         while (txq->len > 0 && limit--) {
1621                 int tx;
1622                 struct mwl8k_tx_desc *tx_desc;
1623                 unsigned long addr;
1624                 int size;
1625                 struct sk_buff *skb;
1626                 struct ieee80211_tx_info *info;
1627                 u32 status;
1628                 struct ieee80211_sta *sta;
1629                 struct mwl8k_sta *sta_info = NULL;
1630                 u16 rate_info;
1631                 struct ieee80211_hdr *wh;
1632
1633                 tx = txq->head;
1634                 tx_desc = txq->txd + tx;
1635
1636                 status = le32_to_cpu(tx_desc->status);
1637
1638                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1639                         if (!force)
1640                                 break;
1641                         tx_desc->status &=
1642                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1643                 }
1644
1645                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1646                 BUG_ON(txq->len == 0);
1647                 txq->len--;
1648                 priv->pending_tx_pkts--;
1649
1650                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1651                 size = le16_to_cpu(tx_desc->pkt_len);
1652                 skb = txq->skb[tx];
1653                 txq->skb[tx] = NULL;
1654
1655                 BUG_ON(skb == NULL);
1656                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1657
1658                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1659
1660                 wh = (struct ieee80211_hdr *) skb->data;
1661
1662                 /* Mark descriptor as unused */
1663                 tx_desc->pkt_phys_addr = 0;
1664                 tx_desc->pkt_len = 0;
1665
1666                 info = IEEE80211_SKB_CB(skb);
1667                 if (ieee80211_is_data(wh->frame_control)) {
1668                         rcu_read_lock();
1669                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1670                                                            wh->addr2);
1671                         if (sta) {
1672                                 sta_info = MWL8K_STA(sta);
1673                                 BUG_ON(sta_info == NULL);
1674                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1675                                 /* If rate is < 6.5 Mpbs for an ht station
1676                                  * do not form an ampdu. If the station is a
1677                                  * legacy station (format = 0), do not form an
1678                                  * ampdu
1679                                  */
1680                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1681                                     RI_FORMAT(rate_info) == 0) {
1682                                         sta_info->is_ampdu_allowed = false;
1683                                 } else {
1684                                         sta_info->is_ampdu_allowed = true;
1685                                 }
1686                         }
1687                         rcu_read_unlock();
1688                 }
1689
1690                 ieee80211_tx_info_clear_status(info);
1691
1692                 /* Rate control is happening in the firmware.
1693                  * Ensure no tx rate is being reported.
1694                  */
1695                 info->status.rates[0].idx = -1;
1696                 info->status.rates[0].count = 1;
1697
1698                 if (MWL8K_TXD_SUCCESS(status))
1699                         info->flags |= IEEE80211_TX_STAT_ACK;
1700
1701                 ieee80211_tx_status_irqsafe(hw, skb);
1702
1703                 processed++;
1704         }
1705
1706         return processed;
1707 }
1708
1709 /* must be called only when the card's transmit is completely halted */
1710 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1711 {
1712         struct mwl8k_priv *priv = hw->priv;
1713         struct mwl8k_tx_queue *txq = priv->txq + index;
1714
1715         if (txq->txd == NULL)
1716                 return;
1717
1718         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1719
1720         kfree(txq->skb);
1721         txq->skb = NULL;
1722
1723         pci_free_consistent(priv->pdev,
1724                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1725                             txq->txd, txq->txd_dma);
1726         txq->txd = NULL;
1727 }
1728
1729 /* caller must hold priv->stream_lock when calling the stream functions */
1730 static struct mwl8k_ampdu_stream *
1731 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1732 {
1733         struct mwl8k_ampdu_stream *stream;
1734         struct mwl8k_priv *priv = hw->priv;
1735         int i;
1736
1737         for (i = 0; i < priv->num_ampdu_queues; i++) {
1738                 stream = &priv->ampdu[i];
1739                 if (stream->state == AMPDU_NO_STREAM) {
1740                         stream->sta = sta;
1741                         stream->state = AMPDU_STREAM_NEW;
1742                         stream->tid = tid;
1743                         stream->idx = i;
1744                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1745                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1746                                     sta->addr, tid);
1747                         return stream;
1748                 }
1749         }
1750         return NULL;
1751 }
1752
1753 static int
1754 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1755 {
1756         int ret;
1757
1758         /* if the stream has already been started, don't start it again */
1759         if (stream->state != AMPDU_STREAM_NEW)
1760                 return 0;
1761         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1762         if (ret)
1763                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1764                             "%d\n", stream->sta->addr, stream->tid, ret);
1765         else
1766                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1767                             stream->sta->addr, stream->tid);
1768         return ret;
1769 }
1770
1771 static void
1772 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1773 {
1774         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1775                     stream->tid);
1776         memset(stream, 0, sizeof(*stream));
1777 }
1778
1779 static struct mwl8k_ampdu_stream *
1780 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1781 {
1782         struct mwl8k_priv *priv = hw->priv;
1783         int i;
1784
1785         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1786                 struct mwl8k_ampdu_stream *stream;
1787                 stream = &priv->ampdu[i];
1788                 if (stream->state == AMPDU_NO_STREAM)
1789                         continue;
1790                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1791                     stream->tid == tid)
1792                         return stream;
1793         }
1794         return NULL;
1795 }
1796
1797 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1798 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1799 {
1800         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1801         struct tx_traffic_info *tx_stats;
1802
1803         BUG_ON(tid >= MWL8K_MAX_TID);
1804         tx_stats = &sta_info->tx_stats[tid];
1805
1806         return sta_info->is_ampdu_allowed &&
1807                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1808 }
1809
1810 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1811 {
1812         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1813         struct tx_traffic_info *tx_stats;
1814
1815         BUG_ON(tid >= MWL8K_MAX_TID);
1816         tx_stats = &sta_info->tx_stats[tid];
1817
1818         if (tx_stats->start_time == 0)
1819                 tx_stats->start_time = jiffies;
1820
1821         /* reset the packet count after each second elapses.  If the number of
1822          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1823          * an ampdu stream to be started.
1824          */
1825         if (jiffies - tx_stats->start_time > HZ) {
1826                 tx_stats->pkts = 0;
1827                 tx_stats->start_time = 0;
1828         } else
1829                 tx_stats->pkts++;
1830 }
1831
1832 static void
1833 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1834                int index,
1835                struct ieee80211_sta *sta,
1836                struct sk_buff *skb)
1837 {
1838         struct mwl8k_priv *priv = hw->priv;
1839         struct ieee80211_tx_info *tx_info;
1840         struct mwl8k_vif *mwl8k_vif;
1841         struct ieee80211_hdr *wh;
1842         struct mwl8k_tx_queue *txq;
1843         struct mwl8k_tx_desc *tx;
1844         dma_addr_t dma;
1845         u32 txstatus;
1846         u8 txdatarate;
1847         u16 qos;
1848         int txpriority;
1849         u8 tid = 0;
1850         struct mwl8k_ampdu_stream *stream = NULL;
1851         bool start_ba_session = false;
1852         bool mgmtframe = false;
1853         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1854         bool eapol_frame = false;
1855
1856         wh = (struct ieee80211_hdr *)skb->data;
1857         if (ieee80211_is_data_qos(wh->frame_control))
1858                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1859         else
1860                 qos = 0;
1861
1862         if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1863                 eapol_frame = true;
1864
1865         if (ieee80211_is_mgmt(wh->frame_control))
1866                 mgmtframe = true;
1867
1868         if (priv->ap_fw)
1869                 mwl8k_encapsulate_tx_frame(priv, skb);
1870         else
1871                 mwl8k_add_dma_header(priv, skb, 0, 0);
1872
1873         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1874
1875         tx_info = IEEE80211_SKB_CB(skb);
1876         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1877
1878         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1879                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1880                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1881                 mwl8k_vif->seqno += 0x10;
1882         }
1883
1884         /* Setup firmware control bit fields for each frame type.  */
1885         txstatus = 0;
1886         txdatarate = 0;
1887         if (ieee80211_is_mgmt(wh->frame_control) ||
1888             ieee80211_is_ctl(wh->frame_control)) {
1889                 txdatarate = 0;
1890                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1891         } else if (ieee80211_is_data(wh->frame_control)) {
1892                 txdatarate = 1;
1893                 if (is_multicast_ether_addr(wh->addr1))
1894                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1895
1896                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1897                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1898                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1899                 else
1900                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1901         }
1902
1903         /* Queue ADDBA request in the respective data queue.  While setting up
1904          * the ampdu stream, mac80211 queues further packets for that
1905          * particular ra/tid pair.  However, packets piled up in the hardware
1906          * for that ra/tid pair will still go out. ADDBA request and the
1907          * related data packets going out from different queues asynchronously
1908          * will cause a shift in the receiver window which might result in
1909          * ampdu packets getting dropped at the receiver after the stream has
1910          * been setup.
1911          */
1912         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1913             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1914             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1915             priv->ap_fw)) {
1916                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1917                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1918                 index = mwl8k_tid_queue_mapping(tid);
1919         }
1920
1921         txpriority = index;
1922
1923         if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1924             ieee80211_is_data_qos(wh->frame_control)) {
1925                 tid = qos & 0xf;
1926                 mwl8k_tx_count_packet(sta, tid);
1927                 spin_lock(&priv->stream_lock);
1928                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1929                 if (stream != NULL) {
1930                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1931                                 txpriority = stream->txq_idx;
1932                                 index = stream->txq_idx;
1933                         } else if (stream->state == AMPDU_STREAM_NEW) {
1934                                 /* We get here if the driver sends us packets
1935                                  * after we've initiated a stream, but before
1936                                  * our ampdu_action routine has been called
1937                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1938                                  * for the ADDBA request.  So this packet can
1939                                  * go out with no risk of sequence number
1940                                  * mismatch.  No special handling is required.
1941                                  */
1942                         } else {
1943                                 /* Drop packets that would go out after the
1944                                  * ADDBA request was sent but before the ADDBA
1945                                  * response is received.  If we don't do this,
1946                                  * the recipient would probably receive it
1947                                  * after the ADDBA request with SSN 0.  This
1948                                  * will cause the recipient's BA receive window
1949                                  * to shift, which would cause the subsequent
1950                                  * packets in the BA stream to be discarded.
1951                                  * mac80211 queues our packets for us in this
1952                                  * case, so this is really just a safety check.
1953                                  */
1954                                 wiphy_warn(hw->wiphy,
1955                                            "Cannot send packet while ADDBA "
1956                                            "dialog is underway.\n");
1957                                 spin_unlock(&priv->stream_lock);
1958                                 dev_kfree_skb(skb);
1959                                 return;
1960                         }
1961                 } else {
1962                         /* Defer calling mwl8k_start_stream so that the current
1963                          * skb can go out before the ADDBA request.  This
1964                          * prevents sequence number mismatch at the recepient
1965                          * as described above.
1966                          */
1967                         if (mwl8k_ampdu_allowed(sta, tid)) {
1968                                 stream = mwl8k_add_stream(hw, sta, tid);
1969                                 if (stream != NULL)
1970                                         start_ba_session = true;
1971                         }
1972                 }
1973                 spin_unlock(&priv->stream_lock);
1974         }
1975
1976         dma = pci_map_single(priv->pdev, skb->data,
1977                                 skb->len, PCI_DMA_TODEVICE);
1978
1979         if (pci_dma_mapping_error(priv->pdev, dma)) {
1980                 wiphy_debug(hw->wiphy,
1981                             "failed to dma map skb, dropping TX frame.\n");
1982                 if (start_ba_session) {
1983                         spin_lock(&priv->stream_lock);
1984                         mwl8k_remove_stream(hw, stream);
1985                         spin_unlock(&priv->stream_lock);
1986                 }
1987                 dev_kfree_skb(skb);
1988                 return;
1989         }
1990
1991         spin_lock_bh(&priv->tx_lock);
1992
1993         txq = priv->txq + index;
1994
1995         /* Mgmt frames that go out frequently are probe
1996          * responses. Other mgmt frames got out relatively
1997          * infrequently. Hence reserve 2 buffers so that
1998          * other mgmt frames do not get dropped due to an
1999          * already queued probe response in one of the
2000          * reserved buffers.
2001          */
2002
2003         if (txq->len >= MWL8K_TX_DESCS - 2) {
2004                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2005                         if (start_ba_session) {
2006                                 spin_lock(&priv->stream_lock);
2007                                 mwl8k_remove_stream(hw, stream);
2008                                 spin_unlock(&priv->stream_lock);
2009                         }
2010                         spin_unlock_bh(&priv->tx_lock);
2011                         pci_unmap_single(priv->pdev, dma, skb->len,
2012                                          PCI_DMA_TODEVICE);
2013                         dev_kfree_skb(skb);
2014                         return;
2015                 }
2016         }
2017
2018         BUG_ON(txq->skb[txq->tail] != NULL);
2019         txq->skb[txq->tail] = skb;
2020
2021         tx = txq->txd + txq->tail;
2022         tx->data_rate = txdatarate;
2023         tx->tx_priority = txpriority;
2024         tx->qos_control = cpu_to_le16(qos);
2025         tx->pkt_phys_addr = cpu_to_le32(dma);
2026         tx->pkt_len = cpu_to_le16(skb->len);
2027         tx->rate_info = 0;
2028         if (!priv->ap_fw && sta != NULL)
2029                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2030         else
2031                 tx->peer_id = 0;
2032
2033         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2034                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2035                                                 MWL8K_HW_TIMER_REGISTER));
2036         else
2037                 tx->timestamp = 0;
2038
2039         wmb();
2040         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2041
2042         txq->len++;
2043         priv->pending_tx_pkts++;
2044
2045         txq->tail++;
2046         if (txq->tail == MWL8K_TX_DESCS)
2047                 txq->tail = 0;
2048
2049         mwl8k_tx_start(priv);
2050
2051         spin_unlock_bh(&priv->tx_lock);
2052
2053         /* Initiate the ampdu session here */
2054         if (start_ba_session) {
2055                 spin_lock(&priv->stream_lock);
2056                 if (mwl8k_start_stream(hw, stream))
2057                         mwl8k_remove_stream(hw, stream);
2058                 spin_unlock(&priv->stream_lock);
2059         }
2060 }
2061
2062
2063 /*
2064  * Firmware access.
2065  *
2066  * We have the following requirements for issuing firmware commands:
2067  * - Some commands require that the packet transmit path is idle when
2068  *   the command is issued.  (For simplicity, we'll just quiesce the
2069  *   transmit path for every command.)
2070  * - There are certain sequences of commands that need to be issued to
2071  *   the hardware sequentially, with no other intervening commands.
2072  *
2073  * This leads to an implementation of a "firmware lock" as a mutex that
2074  * can be taken recursively, and which is taken by both the low-level
2075  * command submission function (mwl8k_post_cmd) as well as any users of
2076  * that function that require issuing of an atomic sequence of commands,
2077  * and quiesces the transmit path whenever it's taken.
2078  */
2079 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2080 {
2081         struct mwl8k_priv *priv = hw->priv;
2082
2083         if (priv->fw_mutex_owner != current) {
2084                 int rc;
2085
2086                 mutex_lock(&priv->fw_mutex);
2087                 ieee80211_stop_queues(hw);
2088
2089                 rc = mwl8k_tx_wait_empty(hw);
2090                 if (rc) {
2091                         if (!priv->hw_restart_in_progress)
2092                                 ieee80211_wake_queues(hw);
2093
2094                         mutex_unlock(&priv->fw_mutex);
2095
2096                         return rc;
2097                 }
2098
2099                 priv->fw_mutex_owner = current;
2100         }
2101
2102         priv->fw_mutex_depth++;
2103
2104         return 0;
2105 }
2106
2107 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2108 {
2109         struct mwl8k_priv *priv = hw->priv;
2110
2111         if (!--priv->fw_mutex_depth) {
2112                 if (!priv->hw_restart_in_progress)
2113                         ieee80211_wake_queues(hw);
2114
2115                 priv->fw_mutex_owner = NULL;
2116                 mutex_unlock(&priv->fw_mutex);
2117         }
2118 }
2119
2120
2121 /*
2122  * Command processing.
2123  */
2124
2125 /* Timeout firmware commands after 10s */
2126 #define MWL8K_CMD_TIMEOUT_MS    10000
2127
2128 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2129 {
2130         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2131         struct mwl8k_priv *priv = hw->priv;
2132         void __iomem *regs = priv->regs;
2133         dma_addr_t dma_addr;
2134         unsigned int dma_size;
2135         int rc;
2136         unsigned long timeout = 0;
2137         u8 buf[32];
2138
2139         cmd->result = (__force __le16) 0xffff;
2140         dma_size = le16_to_cpu(cmd->length);
2141         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2142                                   PCI_DMA_BIDIRECTIONAL);
2143         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2144                 return -ENOMEM;
2145
2146         rc = mwl8k_fw_lock(hw);
2147         if (rc) {
2148                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2149                                                 PCI_DMA_BIDIRECTIONAL);
2150                 return rc;
2151         }
2152
2153         priv->hostcmd_wait = &cmd_wait;
2154         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2155         iowrite32(MWL8K_H2A_INT_DOORBELL,
2156                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2157         iowrite32(MWL8K_H2A_INT_DUMMY,
2158                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2159
2160         timeout = wait_for_completion_timeout(&cmd_wait,
2161                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2162
2163         priv->hostcmd_wait = NULL;
2164
2165         mwl8k_fw_unlock(hw);
2166
2167         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2168                                         PCI_DMA_BIDIRECTIONAL);
2169
2170         if (!timeout) {
2171                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2172                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2173                           MWL8K_CMD_TIMEOUT_MS);
2174                 rc = -ETIMEDOUT;
2175         } else {
2176                 int ms;
2177
2178                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2179
2180                 rc = cmd->result ? -EINVAL : 0;
2181                 if (rc)
2182                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2183                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2184                                   le16_to_cpu(cmd->result));
2185                 else if (ms > 2000)
2186                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2187                                      mwl8k_cmd_name(cmd->code,
2188                                                     buf, sizeof(buf)),
2189                                      ms);
2190         }
2191
2192         return rc;
2193 }
2194
2195 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2196                                  struct ieee80211_vif *vif,
2197                                  struct mwl8k_cmd_pkt *cmd)
2198 {
2199         if (vif != NULL)
2200                 cmd->macid = MWL8K_VIF(vif)->macid;
2201         return mwl8k_post_cmd(hw, cmd);
2202 }
2203
2204 /*
2205  * Setup code shared between STA and AP firmware images.
2206  */
2207 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2208 {
2209         struct mwl8k_priv *priv = hw->priv;
2210
2211         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2212         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2213
2214         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2215         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2216
2217         priv->band_24.band = IEEE80211_BAND_2GHZ;
2218         priv->band_24.channels = priv->channels_24;
2219         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2220         priv->band_24.bitrates = priv->rates_24;
2221         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2222
2223         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2224 }
2225
2226 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2227 {
2228         struct mwl8k_priv *priv = hw->priv;
2229
2230         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2231         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2232
2233         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2234         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2235
2236         priv->band_50.band = IEEE80211_BAND_5GHZ;
2237         priv->band_50.channels = priv->channels_50;
2238         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2239         priv->band_50.bitrates = priv->rates_50;
2240         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2241
2242         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2243 }
2244
2245 /*
2246  * CMD_GET_HW_SPEC (STA version).
2247  */
2248 struct mwl8k_cmd_get_hw_spec_sta {
2249         struct mwl8k_cmd_pkt header;
2250         __u8 hw_rev;
2251         __u8 host_interface;
2252         __le16 num_mcaddrs;
2253         __u8 perm_addr[ETH_ALEN];
2254         __le16 region_code;
2255         __le32 fw_rev;
2256         __le32 ps_cookie;
2257         __le32 caps;
2258         __u8 mcs_bitmap[16];
2259         __le32 rx_queue_ptr;
2260         __le32 num_tx_queues;
2261         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2262         __le32 caps2;
2263         __le32 num_tx_desc_per_queue;
2264         __le32 total_rxd;
2265 } __packed;
2266
2267 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2268 #define MWL8K_CAP_GREENFIELD            0x08000000
2269 #define MWL8K_CAP_AMPDU                 0x04000000
2270 #define MWL8K_CAP_RX_STBC               0x01000000
2271 #define MWL8K_CAP_TX_STBC               0x00800000
2272 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2273 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2274 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2275 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2276 #define MWL8K_CAP_DELAY_BA              0x00003000
2277 #define MWL8K_CAP_MIMO                  0x00000200
2278 #define MWL8K_CAP_40MHZ                 0x00000100
2279 #define MWL8K_CAP_BAND_MASK             0x00000007
2280 #define MWL8K_CAP_5GHZ                  0x00000004
2281 #define MWL8K_CAP_2GHZ4                 0x00000001
2282
2283 static void
2284 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2285                   struct ieee80211_supported_band *band, u32 cap)
2286 {
2287         int rx_streams;
2288         int tx_streams;
2289
2290         band->ht_cap.ht_supported = 1;
2291
2292         if (cap & MWL8K_CAP_MAX_AMSDU)
2293                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2294         if (cap & MWL8K_CAP_GREENFIELD)
2295                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2296         if (cap & MWL8K_CAP_AMPDU) {
2297                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2298                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2299                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2300         }
2301         if (cap & MWL8K_CAP_RX_STBC)
2302                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2303         if (cap & MWL8K_CAP_TX_STBC)
2304                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2305         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2306                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2307         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2308                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2309         if (cap & MWL8K_CAP_DELAY_BA)
2310                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2311         if (cap & MWL8K_CAP_40MHZ)
2312                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2313
2314         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2315         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2316
2317         band->ht_cap.mcs.rx_mask[0] = 0xff;
2318         if (rx_streams >= 2)
2319                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2320         if (rx_streams >= 3)
2321                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2322         band->ht_cap.mcs.rx_mask[4] = 0x01;
2323         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2324
2325         if (rx_streams != tx_streams) {
2326                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2327                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2328                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2329         }
2330 }
2331
2332 static void
2333 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2334 {
2335         struct mwl8k_priv *priv = hw->priv;
2336
2337         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2338                 mwl8k_setup_2ghz_band(hw);
2339                 if (caps & MWL8K_CAP_MIMO)
2340                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2341         }
2342
2343         if (caps & MWL8K_CAP_5GHZ) {
2344                 mwl8k_setup_5ghz_band(hw);
2345                 if (caps & MWL8K_CAP_MIMO)
2346                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2347         }
2348 }
2349
2350 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2351 {
2352         struct mwl8k_priv *priv = hw->priv;
2353         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2354         int rc;
2355         int i;
2356
2357         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2358         if (cmd == NULL)
2359                 return -ENOMEM;
2360
2361         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2362         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2363
2364         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2365         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2366         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2367         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2368         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2369                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2370         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2371         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2372
2373         rc = mwl8k_post_cmd(hw, &cmd->header);
2374
2375         if (!rc) {
2376                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2377                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2378                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2379                 priv->hw_rev = cmd->hw_rev;
2380                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2381                 priv->ap_macids_supported = 0x00000000;
2382                 priv->sta_macids_supported = 0x00000001;
2383         }
2384
2385         kfree(cmd);
2386         return rc;
2387 }
2388
2389 /*
2390  * CMD_GET_HW_SPEC (AP version).
2391  */
2392 struct mwl8k_cmd_get_hw_spec_ap {
2393         struct mwl8k_cmd_pkt header;
2394         __u8 hw_rev;
2395         __u8 host_interface;
2396         __le16 num_wcb;
2397         __le16 num_mcaddrs;
2398         __u8 perm_addr[ETH_ALEN];
2399         __le16 region_code;
2400         __le16 num_antenna;
2401         __le32 fw_rev;
2402         __le32 wcbbase0;
2403         __le32 rxwrptr;
2404         __le32 rxrdptr;
2405         __le32 ps_cookie;
2406         __le32 wcbbase1;
2407         __le32 wcbbase2;
2408         __le32 wcbbase3;
2409         __le32 fw_api_version;
2410         __le32 caps;
2411         __le32 num_of_ampdu_queues;
2412         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2413 } __packed;
2414
2415 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2416 {
2417         struct mwl8k_priv *priv = hw->priv;
2418         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2419         int rc, i;
2420         u32 api_version;
2421
2422         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2423         if (cmd == NULL)
2424                 return -ENOMEM;
2425
2426         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2427         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2428
2429         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2430         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2431
2432         rc = mwl8k_post_cmd(hw, &cmd->header);
2433
2434         if (!rc) {
2435                 int off;
2436
2437                 api_version = le32_to_cpu(cmd->fw_api_version);
2438                 if (priv->device_info->fw_api_ap != api_version) {
2439                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2440                                "  Expected %d got %d.\n", MWL8K_NAME,
2441                                priv->device_info->part_name,
2442                                priv->device_info->fw_api_ap,
2443                                api_version);
2444                         rc = -EINVAL;
2445                         goto done;
2446                 }
2447                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2448                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2449                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2450                 priv->hw_rev = cmd->hw_rev;
2451                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2452                 priv->ap_macids_supported = 0x000000ff;
2453                 priv->sta_macids_supported = 0x00000000;
2454                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2455                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2456                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2457                                    " but we only support %d.\n",
2458                                    priv->num_ampdu_queues,
2459                                    MWL8K_MAX_AMPDU_QUEUES);
2460                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2461                 }
2462                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2463                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2464
2465                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2466                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2467
2468                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2469                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2470                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2471                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2472
2473                 for (i = 0; i < priv->num_ampdu_queues; i++)
2474                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2475                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2476         }
2477
2478 done:
2479         kfree(cmd);
2480         return rc;
2481 }
2482
2483 /*
2484  * CMD_SET_HW_SPEC.
2485  */
2486 struct mwl8k_cmd_set_hw_spec {
2487         struct mwl8k_cmd_pkt header;
2488         __u8 hw_rev;
2489         __u8 host_interface;
2490         __le16 num_mcaddrs;
2491         __u8 perm_addr[ETH_ALEN];
2492         __le16 region_code;
2493         __le32 fw_rev;
2494         __le32 ps_cookie;
2495         __le32 caps;
2496         __le32 rx_queue_ptr;
2497         __le32 num_tx_queues;
2498         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2499         __le32 flags;
2500         __le32 num_tx_desc_per_queue;
2501         __le32 total_rxd;
2502 } __packed;
2503
2504 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2505  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2506  * the packets that are queued for more than 500ms, will be dropped in the
2507  * hardware. This helps minimizing the issues caused due to head-of-line
2508  * blocking where a slow client can hog the bandwidth and affect traffic to a
2509  * faster client.
2510  */
2511 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2512 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2513 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2514 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2515 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2516
2517 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2518 {
2519         struct mwl8k_priv *priv = hw->priv;
2520         struct mwl8k_cmd_set_hw_spec *cmd;
2521         int rc;
2522         int i;
2523
2524         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2525         if (cmd == NULL)
2526                 return -ENOMEM;
2527
2528         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2529         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2530
2531         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2532         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2533         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2534
2535         /*
2536          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2537          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2538          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2539          * priority is interpreted the right way in firmware.
2540          */
2541         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2542                 int j = mwl8k_tx_queues(priv) - 1 - i;
2543                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2544         }
2545
2546         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2547                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2548                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2549                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2550                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2551         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2552         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2553
2554         rc = mwl8k_post_cmd(hw, &cmd->header);
2555         kfree(cmd);
2556
2557         return rc;
2558 }
2559
2560 /*
2561  * CMD_MAC_MULTICAST_ADR.
2562  */
2563 struct mwl8k_cmd_mac_multicast_adr {
2564         struct mwl8k_cmd_pkt header;
2565         __le16 action;
2566         __le16 numaddr;
2567         __u8 addr[0][ETH_ALEN];
2568 };
2569
2570 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2571 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2572 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2573 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2574
2575 static struct mwl8k_cmd_pkt *
2576 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2577                               struct netdev_hw_addr_list *mc_list)
2578 {
2579         struct mwl8k_priv *priv = hw->priv;
2580         struct mwl8k_cmd_mac_multicast_adr *cmd;
2581         int size;
2582         int mc_count = 0;
2583
2584         if (mc_list)
2585                 mc_count = netdev_hw_addr_list_count(mc_list);
2586
2587         if (allmulti || mc_count > priv->num_mcaddrs) {
2588                 allmulti = 1;
2589                 mc_count = 0;
2590         }
2591
2592         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2593
2594         cmd = kzalloc(size, GFP_ATOMIC);
2595         if (cmd == NULL)
2596                 return NULL;
2597
2598         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2599         cmd->header.length = cpu_to_le16(size);
2600         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2601                                   MWL8K_ENABLE_RX_BROADCAST);
2602
2603         if (allmulti) {
2604                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2605         } else if (mc_count) {
2606                 struct netdev_hw_addr *ha;
2607                 int i = 0;
2608
2609                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2610                 cmd->numaddr = cpu_to_le16(mc_count);
2611                 netdev_hw_addr_list_for_each(ha, mc_list) {
2612                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2613                 }
2614         }
2615
2616         return &cmd->header;
2617 }
2618
2619 /*
2620  * CMD_GET_STAT.
2621  */
2622 struct mwl8k_cmd_get_stat {
2623         struct mwl8k_cmd_pkt header;
2624         __le32 stats[64];
2625 } __packed;
2626
2627 #define MWL8K_STAT_ACK_FAILURE  9
2628 #define MWL8K_STAT_RTS_FAILURE  12
2629 #define MWL8K_STAT_FCS_ERROR    24
2630 #define MWL8K_STAT_RTS_SUCCESS  11
2631
2632 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2633                               struct ieee80211_low_level_stats *stats)
2634 {
2635         struct mwl8k_cmd_get_stat *cmd;
2636         int rc;
2637
2638         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2639         if (cmd == NULL)
2640                 return -ENOMEM;
2641
2642         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2643         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2644
2645         rc = mwl8k_post_cmd(hw, &cmd->header);
2646         if (!rc) {
2647                 stats->dot11ACKFailureCount =
2648                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2649                 stats->dot11RTSFailureCount =
2650                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2651                 stats->dot11FCSErrorCount =
2652                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2653                 stats->dot11RTSSuccessCount =
2654                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2655         }
2656         kfree(cmd);
2657
2658         return rc;
2659 }
2660
2661 /*
2662  * CMD_RADIO_CONTROL.
2663  */
2664 struct mwl8k_cmd_radio_control {
2665         struct mwl8k_cmd_pkt header;
2666         __le16 action;
2667         __le16 control;
2668         __le16 radio_on;
2669 } __packed;
2670
2671 static int
2672 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2673 {
2674         struct mwl8k_priv *priv = hw->priv;
2675         struct mwl8k_cmd_radio_control *cmd;
2676         int rc;
2677
2678         if (enable == priv->radio_on && !force)
2679                 return 0;
2680
2681         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2682         if (cmd == NULL)
2683                 return -ENOMEM;
2684
2685         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2686         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2687         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2688         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2689         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2690
2691         rc = mwl8k_post_cmd(hw, &cmd->header);
2692         kfree(cmd);
2693
2694         if (!rc)
2695                 priv->radio_on = enable;
2696
2697         return rc;
2698 }
2699
2700 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2701 {
2702         return mwl8k_cmd_radio_control(hw, 0, 0);
2703 }
2704
2705 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2706 {
2707         return mwl8k_cmd_radio_control(hw, 1, 0);
2708 }
2709
2710 static int
2711 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2712 {
2713         struct mwl8k_priv *priv = hw->priv;
2714
2715         priv->radio_short_preamble = short_preamble;
2716
2717         return mwl8k_cmd_radio_control(hw, 1, 1);
2718 }
2719
2720 /*
2721  * CMD_RF_TX_POWER.
2722  */
2723 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2724
2725 struct mwl8k_cmd_rf_tx_power {
2726         struct mwl8k_cmd_pkt header;
2727         __le16 action;
2728         __le16 support_level;
2729         __le16 current_level;
2730         __le16 reserved;
2731         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2732 } __packed;
2733
2734 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2735 {
2736         struct mwl8k_cmd_rf_tx_power *cmd;
2737         int rc;
2738
2739         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2740         if (cmd == NULL)
2741                 return -ENOMEM;
2742
2743         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2744         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2745         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2746         cmd->support_level = cpu_to_le16(dBm);
2747
2748         rc = mwl8k_post_cmd(hw, &cmd->header);
2749         kfree(cmd);
2750
2751         return rc;
2752 }
2753
2754 /*
2755  * CMD_TX_POWER.
2756  */
2757 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2758
2759 struct mwl8k_cmd_tx_power {
2760         struct mwl8k_cmd_pkt header;
2761         __le16 action;
2762         __le16 band;
2763         __le16 channel;
2764         __le16 bw;
2765         __le16 sub_ch;
2766         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2767 } __packed;
2768
2769 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2770                                      struct ieee80211_conf *conf,
2771                                      unsigned short pwr)
2772 {
2773         struct ieee80211_channel *channel = conf->channel;
2774         struct mwl8k_cmd_tx_power *cmd;
2775         int rc;
2776         int i;
2777
2778         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2779         if (cmd == NULL)
2780                 return -ENOMEM;
2781
2782         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2783         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2784         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2785
2786         if (channel->band == IEEE80211_BAND_2GHZ)
2787                 cmd->band = cpu_to_le16(0x1);
2788         else if (channel->band == IEEE80211_BAND_5GHZ)
2789                 cmd->band = cpu_to_le16(0x4);
2790
2791         cmd->channel = cpu_to_le16(channel->hw_value);
2792
2793         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2794             conf->channel_type == NL80211_CHAN_HT20) {
2795                 cmd->bw = cpu_to_le16(0x2);
2796         } else {
2797                 cmd->bw = cpu_to_le16(0x4);
2798                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2799                         cmd->sub_ch = cpu_to_le16(0x3);
2800                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2801                         cmd->sub_ch = cpu_to_le16(0x1);
2802         }
2803
2804         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2805                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2806
2807         rc = mwl8k_post_cmd(hw, &cmd->header);
2808         kfree(cmd);
2809
2810         return rc;
2811 }
2812
2813 /*
2814  * CMD_RF_ANTENNA.
2815  */
2816 struct mwl8k_cmd_rf_antenna {
2817         struct mwl8k_cmd_pkt header;
2818         __le16 antenna;
2819         __le16 mode;
2820 } __packed;
2821
2822 #define MWL8K_RF_ANTENNA_RX             1
2823 #define MWL8K_RF_ANTENNA_TX             2
2824
2825 static int
2826 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2827 {
2828         struct mwl8k_cmd_rf_antenna *cmd;
2829         int rc;
2830
2831         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2832         if (cmd == NULL)
2833                 return -ENOMEM;
2834
2835         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2836         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2837         cmd->antenna = cpu_to_le16(antenna);
2838         cmd->mode = cpu_to_le16(mask);
2839
2840         rc = mwl8k_post_cmd(hw, &cmd->header);
2841         kfree(cmd);
2842
2843         return rc;
2844 }
2845
2846 /*
2847  * CMD_SET_BEACON.
2848  */
2849 struct mwl8k_cmd_set_beacon {
2850         struct mwl8k_cmd_pkt header;
2851         __le16 beacon_len;
2852         __u8 beacon[0];
2853 };
2854
2855 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2856                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2857 {
2858         struct mwl8k_cmd_set_beacon *cmd;
2859         int rc;
2860
2861         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2862         if (cmd == NULL)
2863                 return -ENOMEM;
2864
2865         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2866         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2867         cmd->beacon_len = cpu_to_le16(len);
2868         memcpy(cmd->beacon, beacon, len);
2869
2870         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2871         kfree(cmd);
2872
2873         return rc;
2874 }
2875
2876 /*
2877  * CMD_SET_PRE_SCAN.
2878  */
2879 struct mwl8k_cmd_set_pre_scan {
2880         struct mwl8k_cmd_pkt header;
2881 } __packed;
2882
2883 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2884 {
2885         struct mwl8k_cmd_set_pre_scan *cmd;
2886         int rc;
2887
2888         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2889         if (cmd == NULL)
2890                 return -ENOMEM;
2891
2892         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2893         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2894
2895         rc = mwl8k_post_cmd(hw, &cmd->header);
2896         kfree(cmd);
2897
2898         return rc;
2899 }
2900
2901 /*
2902  * CMD_SET_POST_SCAN.
2903  */
2904 struct mwl8k_cmd_set_post_scan {
2905         struct mwl8k_cmd_pkt header;
2906         __le32 isibss;
2907         __u8 bssid[ETH_ALEN];
2908 } __packed;
2909
2910 static int
2911 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2912 {
2913         struct mwl8k_cmd_set_post_scan *cmd;
2914         int rc;
2915
2916         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2917         if (cmd == NULL)
2918                 return -ENOMEM;
2919
2920         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2921         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2922         cmd->isibss = 0;
2923         memcpy(cmd->bssid, mac, ETH_ALEN);
2924
2925         rc = mwl8k_post_cmd(hw, &cmd->header);
2926         kfree(cmd);
2927
2928         return rc;
2929 }
2930
2931 /*
2932  * CMD_SET_RF_CHANNEL.
2933  */
2934 struct mwl8k_cmd_set_rf_channel {
2935         struct mwl8k_cmd_pkt header;
2936         __le16 action;
2937         __u8 current_channel;
2938         __le32 channel_flags;
2939 } __packed;
2940
2941 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2942                                     struct ieee80211_conf *conf)
2943 {
2944         struct ieee80211_channel *channel = conf->channel;
2945         struct mwl8k_cmd_set_rf_channel *cmd;
2946         int rc;
2947
2948         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2949         if (cmd == NULL)
2950                 return -ENOMEM;
2951
2952         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2953         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2954         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2955         cmd->current_channel = channel->hw_value;
2956
2957         if (channel->band == IEEE80211_BAND_2GHZ)
2958                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2959         else if (channel->band == IEEE80211_BAND_5GHZ)
2960                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2961
2962         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2963             conf->channel_type == NL80211_CHAN_HT20)
2964                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2965         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2966                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2967         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2968                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2969
2970         rc = mwl8k_post_cmd(hw, &cmd->header);
2971         kfree(cmd);
2972
2973         return rc;
2974 }
2975
2976 /*
2977  * CMD_SET_AID.
2978  */
2979 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2980 #define MWL8K_FRAME_PROT_11G                            0x07
2981 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2982 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2983
2984 struct mwl8k_cmd_update_set_aid {
2985         struct  mwl8k_cmd_pkt header;
2986         __le16  aid;
2987
2988          /* AP's MAC address (BSSID) */
2989         __u8    bssid[ETH_ALEN];
2990         __le16  protection_mode;
2991         __u8    supp_rates[14];
2992 } __packed;
2993
2994 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2995 {
2996         int i;
2997         int j;
2998
2999         /*
3000          * Clear nonstandard rates 4 and 13.
3001          */
3002         mask &= 0x1fef;
3003
3004         for (i = 0, j = 0; i < 14; i++) {
3005                 if (mask & (1 << i))
3006                         rates[j++] = mwl8k_rates_24[i].hw_value;
3007         }
3008 }
3009
3010 static int
3011 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3012                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3013 {
3014         struct mwl8k_cmd_update_set_aid *cmd;
3015         u16 prot_mode;
3016         int rc;
3017
3018         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3019         if (cmd == NULL)
3020                 return -ENOMEM;
3021
3022         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3023         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3024         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3025         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3026
3027         if (vif->bss_conf.use_cts_prot) {
3028                 prot_mode = MWL8K_FRAME_PROT_11G;
3029         } else {
3030                 switch (vif->bss_conf.ht_operation_mode &
3031                         IEEE80211_HT_OP_MODE_PROTECTION) {
3032                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3033                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3034                         break;
3035                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3036                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3037                         break;
3038                 default:
3039                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3040                         break;
3041                 }
3042         }
3043         cmd->protection_mode = cpu_to_le16(prot_mode);
3044
3045         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3046
3047         rc = mwl8k_post_cmd(hw, &cmd->header);
3048         kfree(cmd);
3049
3050         return rc;
3051 }
3052
3053 /*
3054  * CMD_SET_RATE.
3055  */
3056 struct mwl8k_cmd_set_rate {
3057         struct  mwl8k_cmd_pkt header;
3058         __u8    legacy_rates[14];
3059
3060         /* Bitmap for supported MCS codes.  */
3061         __u8    mcs_set[16];
3062         __u8    reserved[16];
3063 } __packed;
3064
3065 static int
3066 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3067                    u32 legacy_rate_mask, u8 *mcs_rates)
3068 {
3069         struct mwl8k_cmd_set_rate *cmd;
3070         int rc;
3071
3072         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3073         if (cmd == NULL)
3074                 return -ENOMEM;
3075
3076         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3077         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3078         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3079         memcpy(cmd->mcs_set, mcs_rates, 16);
3080
3081         rc = mwl8k_post_cmd(hw, &cmd->header);
3082         kfree(cmd);
3083
3084         return rc;
3085 }
3086
3087 /*
3088  * CMD_FINALIZE_JOIN.
3089  */
3090 #define MWL8K_FJ_BEACON_MAXLEN  128
3091
3092 struct mwl8k_cmd_finalize_join {
3093         struct mwl8k_cmd_pkt header;
3094         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3095         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3096 } __packed;
3097
3098 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3099                                    int framelen, int dtim)
3100 {
3101         struct mwl8k_cmd_finalize_join *cmd;
3102         struct ieee80211_mgmt *payload = frame;
3103         int payload_len;
3104         int rc;
3105
3106         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3107         if (cmd == NULL)
3108                 return -ENOMEM;
3109
3110         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3111         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3112         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3113
3114         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3115         if (payload_len < 0)
3116                 payload_len = 0;
3117         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3118                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3119
3120         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3121
3122         rc = mwl8k_post_cmd(hw, &cmd->header);
3123         kfree(cmd);
3124
3125         return rc;
3126 }
3127
3128 /*
3129  * CMD_SET_RTS_THRESHOLD.
3130  */
3131 struct mwl8k_cmd_set_rts_threshold {
3132         struct mwl8k_cmd_pkt header;
3133         __le16 action;
3134         __le16 threshold;
3135 } __packed;
3136
3137 static int
3138 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3139 {
3140         struct mwl8k_cmd_set_rts_threshold *cmd;
3141         int rc;
3142
3143         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3144         if (cmd == NULL)
3145                 return -ENOMEM;
3146
3147         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3148         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3149         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3150         cmd->threshold = cpu_to_le16(rts_thresh);
3151
3152         rc = mwl8k_post_cmd(hw, &cmd->header);
3153         kfree(cmd);
3154
3155         return rc;
3156 }
3157
3158 /*
3159  * CMD_SET_SLOT.
3160  */
3161 struct mwl8k_cmd_set_slot {
3162         struct mwl8k_cmd_pkt header;
3163         __le16 action;
3164         __u8 short_slot;
3165 } __packed;
3166
3167 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3168 {
3169         struct mwl8k_cmd_set_slot *cmd;
3170         int rc;
3171
3172         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3173         if (cmd == NULL)
3174                 return -ENOMEM;
3175
3176         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3177         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3178         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3179         cmd->short_slot = short_slot_time;
3180
3181         rc = mwl8k_post_cmd(hw, &cmd->header);
3182         kfree(cmd);
3183
3184         return rc;
3185 }
3186
3187 /*
3188  * CMD_SET_EDCA_PARAMS.
3189  */
3190 struct mwl8k_cmd_set_edca_params {
3191         struct mwl8k_cmd_pkt header;
3192
3193         /* See MWL8K_SET_EDCA_XXX below */
3194         __le16 action;
3195
3196         /* TX opportunity in units of 32 us */
3197         __le16 txop;
3198
3199         union {
3200                 struct {
3201                         /* Log exponent of max contention period: 0...15 */
3202                         __le32 log_cw_max;
3203
3204                         /* Log exponent of min contention period: 0...15 */
3205                         __le32 log_cw_min;
3206
3207                         /* Adaptive interframe spacing in units of 32us */
3208                         __u8 aifs;
3209
3210                         /* TX queue to configure */
3211                         __u8 txq;
3212                 } ap;
3213                 struct {
3214                         /* Log exponent of max contention period: 0...15 */
3215                         __u8 log_cw_max;
3216
3217                         /* Log exponent of min contention period: 0...15 */
3218                         __u8 log_cw_min;
3219
3220                         /* Adaptive interframe spacing in units of 32us */
3221                         __u8 aifs;
3222
3223                         /* TX queue to configure */
3224                         __u8 txq;
3225                 } sta;
3226         };
3227 } __packed;
3228
3229 #define MWL8K_SET_EDCA_CW       0x01
3230 #define MWL8K_SET_EDCA_TXOP     0x02
3231 #define MWL8K_SET_EDCA_AIFS     0x04
3232
3233 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3234                                  MWL8K_SET_EDCA_TXOP | \
3235                                  MWL8K_SET_EDCA_AIFS)
3236
3237 static int
3238 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3239                           __u16 cw_min, __u16 cw_max,
3240                           __u8 aifs, __u16 txop)
3241 {
3242         struct mwl8k_priv *priv = hw->priv;
3243         struct mwl8k_cmd_set_edca_params *cmd;
3244         int rc;
3245
3246         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3247         if (cmd == NULL)
3248                 return -ENOMEM;
3249
3250         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3251         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3252         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3253         cmd->txop = cpu_to_le16(txop);
3254         if (priv->ap_fw) {
3255                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3256                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3257                 cmd->ap.aifs = aifs;
3258                 cmd->ap.txq = qnum;
3259         } else {
3260                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3261                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3262                 cmd->sta.aifs = aifs;
3263                 cmd->sta.txq = qnum;
3264         }
3265
3266         rc = mwl8k_post_cmd(hw, &cmd->header);
3267         kfree(cmd);
3268
3269         return rc;
3270 }
3271
3272 /*
3273  * CMD_SET_WMM_MODE.
3274  */
3275 struct mwl8k_cmd_set_wmm_mode {
3276         struct mwl8k_cmd_pkt header;
3277         __le16 action;
3278 } __packed;
3279
3280 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3281 {
3282         struct mwl8k_priv *priv = hw->priv;
3283         struct mwl8k_cmd_set_wmm_mode *cmd;
3284         int rc;
3285
3286         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3287         if (cmd == NULL)
3288                 return -ENOMEM;
3289
3290         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3291         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3292         cmd->action = cpu_to_le16(!!enable);
3293
3294         rc = mwl8k_post_cmd(hw, &cmd->header);
3295         kfree(cmd);
3296
3297         if (!rc)
3298                 priv->wmm_enabled = enable;
3299
3300         return rc;
3301 }
3302
3303 /*
3304  * CMD_MIMO_CONFIG.
3305  */
3306 struct mwl8k_cmd_mimo_config {
3307         struct mwl8k_cmd_pkt header;
3308         __le32 action;
3309         __u8 rx_antenna_map;
3310         __u8 tx_antenna_map;
3311 } __packed;
3312
3313 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3314 {
3315         struct mwl8k_cmd_mimo_config *cmd;
3316         int rc;
3317
3318         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3319         if (cmd == NULL)
3320                 return -ENOMEM;
3321
3322         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3323         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3324         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3325         cmd->rx_antenna_map = rx;
3326         cmd->tx_antenna_map = tx;
3327
3328         rc = mwl8k_post_cmd(hw, &cmd->header);
3329         kfree(cmd);
3330
3331         return rc;
3332 }
3333
3334 /*
3335  * CMD_USE_FIXED_RATE (STA version).
3336  */
3337 struct mwl8k_cmd_use_fixed_rate_sta {
3338         struct mwl8k_cmd_pkt header;
3339         __le32 action;
3340         __le32 allow_rate_drop;
3341         __le32 num_rates;
3342         struct {
3343                 __le32 is_ht_rate;
3344                 __le32 enable_retry;
3345                 __le32 rate;
3346                 __le32 retry_count;
3347         } rate_entry[8];
3348         __le32 rate_type;
3349         __le32 reserved1;
3350         __le32 reserved2;
3351 } __packed;
3352
3353 #define MWL8K_USE_AUTO_RATE     0x0002
3354 #define MWL8K_UCAST_RATE        0
3355
3356 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3357 {
3358         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3359         int rc;
3360
3361         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3362         if (cmd == NULL)
3363                 return -ENOMEM;
3364
3365         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3366         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3367         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3368         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3369
3370         rc = mwl8k_post_cmd(hw, &cmd->header);
3371         kfree(cmd);
3372
3373         return rc;
3374 }
3375
3376 /*
3377  * CMD_USE_FIXED_RATE (AP version).
3378  */
3379 struct mwl8k_cmd_use_fixed_rate_ap {
3380         struct mwl8k_cmd_pkt header;
3381         __le32 action;
3382         __le32 allow_rate_drop;
3383         __le32 num_rates;
3384         struct mwl8k_rate_entry_ap {
3385                 __le32 is_ht_rate;
3386                 __le32 enable_retry;
3387                 __le32 rate;
3388                 __le32 retry_count;
3389         } rate_entry[4];
3390         u8 multicast_rate;
3391         u8 multicast_rate_type;
3392         u8 management_rate;
3393 } __packed;
3394
3395 static int
3396 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3397 {
3398         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3399         int rc;
3400
3401         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3402         if (cmd == NULL)
3403                 return -ENOMEM;
3404
3405         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3406         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3407         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3408         cmd->multicast_rate = mcast;
3409         cmd->management_rate = mgmt;
3410
3411         rc = mwl8k_post_cmd(hw, &cmd->header);
3412         kfree(cmd);
3413
3414         return rc;
3415 }
3416
3417 /*
3418  * CMD_ENABLE_SNIFFER.
3419  */
3420 struct mwl8k_cmd_enable_sniffer {
3421         struct mwl8k_cmd_pkt header;
3422         __le32 action;
3423 } __packed;
3424
3425 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3426 {
3427         struct mwl8k_cmd_enable_sniffer *cmd;
3428         int rc;
3429
3430         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3431         if (cmd == NULL)
3432                 return -ENOMEM;
3433
3434         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3435         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3436         cmd->action = cpu_to_le32(!!enable);
3437
3438         rc = mwl8k_post_cmd(hw, &cmd->header);
3439         kfree(cmd);
3440
3441         return rc;
3442 }
3443
3444 struct mwl8k_cmd_update_mac_addr {
3445         struct mwl8k_cmd_pkt header;
3446         union {
3447                 struct {
3448                         __le16 mac_type;
3449                         __u8 mac_addr[ETH_ALEN];
3450                 } mbss;
3451                 __u8 mac_addr[ETH_ALEN];
3452         };
3453 } __packed;
3454
3455 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3456 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3457 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3458 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3459
3460 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3461                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3462 {
3463         struct mwl8k_priv *priv = hw->priv;
3464         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3465         struct mwl8k_cmd_update_mac_addr *cmd;
3466         int mac_type;
3467         int rc;
3468
3469         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3470         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3471                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3472                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3473                 else
3474                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3475         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3476                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3477                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3478                 else
3479                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3480         }
3481
3482         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3483         if (cmd == NULL)
3484                 return -ENOMEM;
3485
3486         if (set)
3487                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3488         else
3489                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3490
3491         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3492         if (priv->ap_fw) {
3493                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3494                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3495         } else {
3496                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3497         }
3498
3499         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3500         kfree(cmd);
3501
3502         return rc;
3503 }
3504
3505 /*
3506  * MWL8K_CMD_SET_MAC_ADDR.
3507  */
3508 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3509                                   struct ieee80211_vif *vif, u8 *mac)
3510 {
3511         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3512 }
3513
3514 /*
3515  * MWL8K_CMD_DEL_MAC_ADDR.
3516  */
3517 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3518                                   struct ieee80211_vif *vif, u8 *mac)
3519 {
3520         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3521 }
3522
3523 /*
3524  * CMD_SET_RATEADAPT_MODE.
3525  */
3526 struct mwl8k_cmd_set_rate_adapt_mode {
3527         struct mwl8k_cmd_pkt header;
3528         __le16 action;
3529         __le16 mode;
3530 } __packed;
3531
3532 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3533 {
3534         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3535         int rc;
3536
3537         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3538         if (cmd == NULL)
3539                 return -ENOMEM;
3540
3541         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3542         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3543         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3544         cmd->mode = cpu_to_le16(mode);
3545
3546         rc = mwl8k_post_cmd(hw, &cmd->header);
3547         kfree(cmd);
3548
3549         return rc;
3550 }
3551
3552 /*
3553  * CMD_GET_WATCHDOG_BITMAP.
3554  */
3555 struct mwl8k_cmd_get_watchdog_bitmap {
3556         struct mwl8k_cmd_pkt header;
3557         u8      bitmap;
3558 } __packed;
3559
3560 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3561 {
3562         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3563         int rc;
3564
3565         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3566         if (cmd == NULL)
3567                 return -ENOMEM;
3568
3569         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3570         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3571
3572         rc = mwl8k_post_cmd(hw, &cmd->header);
3573         if (!rc)
3574                 *bitmap = cmd->bitmap;
3575
3576         kfree(cmd);
3577
3578         return rc;
3579 }
3580
3581 #define INVALID_BA      0xAA
3582 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3583 {
3584         int rc;
3585         u8 bitmap = 0, stream_index;
3586         struct mwl8k_ampdu_stream *streams;
3587         struct mwl8k_priv *priv =
3588                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3589
3590         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3591         if (rc)
3592                 return;
3593
3594         if (bitmap == INVALID_BA)
3595                 return;
3596
3597         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3598         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3599
3600         BUG_ON(stream_index >= priv->num_ampdu_queues);
3601
3602         streams = &priv->ampdu[stream_index];
3603
3604         if (streams->state == AMPDU_STREAM_ACTIVE)
3605                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3606
3607         return;
3608 }
3609
3610
3611 /*
3612  * CMD_BSS_START.
3613  */
3614 struct mwl8k_cmd_bss_start {
3615         struct mwl8k_cmd_pkt header;
3616         __le32 enable;
3617 } __packed;
3618
3619 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3620                                struct ieee80211_vif *vif, int enable)
3621 {
3622         struct mwl8k_cmd_bss_start *cmd;
3623         int rc;
3624
3625         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3626         if (cmd == NULL)
3627                 return -ENOMEM;
3628
3629         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3630         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3631         cmd->enable = cpu_to_le32(enable);
3632
3633         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3634         kfree(cmd);
3635
3636         return rc;
3637 }
3638
3639 /*
3640  * CMD_BASTREAM.
3641  */
3642
3643 /*
3644  * UPSTREAM is tx direction
3645  */
3646 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3647 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3648
3649 enum ba_stream_action_type {
3650         MWL8K_BA_CREATE,
3651         MWL8K_BA_UPDATE,
3652         MWL8K_BA_DESTROY,
3653         MWL8K_BA_FLUSH,
3654         MWL8K_BA_CHECK,
3655 };
3656
3657
3658 struct mwl8k_create_ba_stream {
3659         __le32  flags;
3660         __le32  idle_thrs;
3661         __le32  bar_thrs;
3662         __le32  window_size;
3663         u8      peer_mac_addr[6];
3664         u8      dialog_token;
3665         u8      tid;
3666         u8      queue_id;
3667         u8      param_info;
3668         __le32  ba_context;
3669         u8      reset_seq_no_flag;
3670         __le16  curr_seq_no;
3671         u8      sta_src_mac_addr[6];
3672 } __packed;
3673
3674 struct mwl8k_destroy_ba_stream {
3675         __le32  flags;
3676         __le32  ba_context;
3677 } __packed;
3678
3679 struct mwl8k_cmd_bastream {
3680         struct mwl8k_cmd_pkt    header;
3681         __le32  action;
3682         union {
3683                 struct mwl8k_create_ba_stream   create_params;
3684                 struct mwl8k_destroy_ba_stream  destroy_params;
3685         };
3686 } __packed;
3687
3688 static int
3689 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3690                struct ieee80211_vif *vif)
3691 {
3692         struct mwl8k_cmd_bastream *cmd;
3693         int rc;
3694
3695         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3696         if (cmd == NULL)
3697                 return -ENOMEM;
3698
3699         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3700         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3701
3702         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3703
3704         cmd->create_params.queue_id = stream->idx;
3705         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3706                ETH_ALEN);
3707         cmd->create_params.tid = stream->tid;
3708
3709         cmd->create_params.flags =
3710                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3711                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3712
3713         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3714
3715         kfree(cmd);
3716
3717         return rc;
3718 }
3719
3720 static int
3721 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3722                 u8 buf_size, struct ieee80211_vif *vif)
3723 {
3724         struct mwl8k_cmd_bastream *cmd;
3725         int rc;
3726
3727         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3728         if (cmd == NULL)
3729                 return -ENOMEM;
3730
3731
3732         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3733         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3734
3735         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3736
3737         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3738         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3739         cmd->create_params.queue_id = stream->idx;
3740
3741         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3742         cmd->create_params.tid = stream->tid;
3743         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3744         cmd->create_params.reset_seq_no_flag = 1;
3745
3746         cmd->create_params.param_info =
3747                 (stream->sta->ht_cap.ampdu_factor &
3748                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3749                 ((stream->sta->ht_cap.ampdu_density << 2) &
3750                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3751
3752         cmd->create_params.flags =
3753                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3754                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3755
3756         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3757
3758         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3759                 stream->sta->addr, stream->tid);
3760         kfree(cmd);
3761
3762         return rc;
3763 }
3764
3765 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3766                              struct mwl8k_ampdu_stream *stream)
3767 {
3768         struct mwl8k_cmd_bastream *cmd;
3769
3770         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3771         if (cmd == NULL)
3772                 return;
3773
3774         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3775         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3776         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3777
3778         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3779         mwl8k_post_cmd(hw, &cmd->header);
3780
3781         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3782
3783         kfree(cmd);
3784 }
3785
3786 /*
3787  * CMD_SET_NEW_STN.
3788  */
3789 struct mwl8k_cmd_set_new_stn {
3790         struct mwl8k_cmd_pkt header;
3791         __le16 aid;
3792         __u8 mac_addr[6];
3793         __le16 stn_id;
3794         __le16 action;
3795         __le16 rsvd;
3796         __le32 legacy_rates;
3797         __u8 ht_rates[4];
3798         __le16 cap_info;
3799         __le16 ht_capabilities_info;
3800         __u8 mac_ht_param_info;
3801         __u8 rev;
3802         __u8 control_channel;
3803         __u8 add_channel;
3804         __le16 op_mode;
3805         __le16 stbc;
3806         __u8 add_qos_info;
3807         __u8 is_qos_sta;
3808         __le32 fw_sta_ptr;
3809 } __packed;
3810
3811 #define MWL8K_STA_ACTION_ADD            0
3812 #define MWL8K_STA_ACTION_REMOVE         2
3813
3814 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3815                                      struct ieee80211_vif *vif,
3816                                      struct ieee80211_sta *sta)
3817 {
3818         struct mwl8k_cmd_set_new_stn *cmd;
3819         u32 rates;
3820         int rc;
3821
3822         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3823         if (cmd == NULL)
3824                 return -ENOMEM;
3825
3826         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3827         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3828         cmd->aid = cpu_to_le16(sta->aid);
3829         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3830         cmd->stn_id = cpu_to_le16(sta->aid);
3831         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3832         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3833                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3834         else
3835                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3836         cmd->legacy_rates = cpu_to_le32(rates);
3837         if (sta->ht_cap.ht_supported) {
3838                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3839                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3840                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3841                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3842                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3843                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3844                         ((sta->ht_cap.ampdu_density & 7) << 2);
3845                 cmd->is_qos_sta = 1;
3846         }
3847
3848         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3849         kfree(cmd);
3850
3851         return rc;
3852 }
3853
3854 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3855                                           struct ieee80211_vif *vif)
3856 {
3857         struct mwl8k_cmd_set_new_stn *cmd;
3858         int rc;
3859
3860         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3861         if (cmd == NULL)
3862                 return -ENOMEM;
3863
3864         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3865         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3866         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3867
3868         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3869         kfree(cmd);
3870
3871         return rc;
3872 }
3873
3874 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3875                                      struct ieee80211_vif *vif, u8 *addr)
3876 {
3877         struct mwl8k_cmd_set_new_stn *cmd;
3878         int rc;
3879
3880         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3881         if (cmd == NULL)
3882                 return -ENOMEM;
3883
3884         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3885         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3886         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3887         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3888
3889         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3890         kfree(cmd);
3891
3892         return rc;
3893 }
3894
3895 /*
3896  * CMD_UPDATE_ENCRYPTION.
3897  */
3898
3899 #define MAX_ENCR_KEY_LENGTH     16
3900 #define MIC_KEY_LENGTH          8
3901
3902 struct mwl8k_cmd_update_encryption {
3903         struct mwl8k_cmd_pkt header;
3904
3905         __le32 action;
3906         __le32 reserved;
3907         __u8 mac_addr[6];
3908         __u8 encr_type;
3909
3910 } __packed;
3911
3912 struct mwl8k_cmd_set_key {
3913         struct mwl8k_cmd_pkt header;
3914
3915         __le32 action;
3916         __le32 reserved;
3917         __le16 length;
3918         __le16 key_type_id;
3919         __le32 key_info;
3920         __le32 key_id;
3921         __le16 key_len;
3922         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3923         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3924         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3925         __le16 tkip_rsc_low;
3926         __le32 tkip_rsc_high;
3927         __le16 tkip_tsc_low;
3928         __le32 tkip_tsc_high;
3929         __u8 mac_addr[6];
3930 } __packed;
3931
3932 enum {
3933         MWL8K_ENCR_ENABLE,
3934         MWL8K_ENCR_SET_KEY,
3935         MWL8K_ENCR_REMOVE_KEY,
3936         MWL8K_ENCR_SET_GROUP_KEY,
3937 };
3938
3939 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3940 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3941 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3942 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3943 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3944
3945 enum {
3946         MWL8K_ALG_WEP,
3947         MWL8K_ALG_TKIP,
3948         MWL8K_ALG_CCMP,
3949 };
3950
3951 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3952 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3953 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3954 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3955 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3956
3957 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3958                                               struct ieee80211_vif *vif,
3959                                               u8 *addr,
3960                                               u8 encr_type)
3961 {
3962         struct mwl8k_cmd_update_encryption *cmd;
3963         int rc;
3964
3965         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3966         if (cmd == NULL)
3967                 return -ENOMEM;
3968
3969         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3970         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3971         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3972         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3973         cmd->encr_type = encr_type;
3974
3975         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3976         kfree(cmd);
3977
3978         return rc;
3979 }
3980
3981 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3982                                                 u8 *addr,
3983                                                 struct ieee80211_key_conf *key)
3984 {
3985         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3986         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3987         cmd->length = cpu_to_le16(sizeof(*cmd) -
3988                                 offsetof(struct mwl8k_cmd_set_key, length));
3989         cmd->key_id = cpu_to_le32(key->keyidx);
3990         cmd->key_len = cpu_to_le16(key->keylen);
3991         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3992
3993         switch (key->cipher) {
3994         case WLAN_CIPHER_SUITE_WEP40:
3995         case WLAN_CIPHER_SUITE_WEP104:
3996                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3997                 if (key->keyidx == 0)
3998                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3999
4000                 break;
4001         case WLAN_CIPHER_SUITE_TKIP:
4002                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4003                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4004                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4005                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4006                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4007                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4008                 break;
4009         case WLAN_CIPHER_SUITE_CCMP:
4010                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4011                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4012                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4013                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4014                 break;
4015         default:
4016                 return -ENOTSUPP;
4017         }
4018
4019         return 0;
4020 }
4021
4022 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4023                                                 struct ieee80211_vif *vif,
4024                                                 u8 *addr,
4025                                                 struct ieee80211_key_conf *key)
4026 {
4027         struct mwl8k_cmd_set_key *cmd;
4028         int rc;
4029         int keymlen;
4030         u32 action;
4031         u8 idx;
4032         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4033
4034         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4035         if (cmd == NULL)
4036                 return -ENOMEM;
4037
4038         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4039         if (rc < 0)
4040                 goto done;
4041
4042         idx = key->keyidx;
4043
4044         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4045                 action = MWL8K_ENCR_SET_KEY;
4046         else
4047                 action = MWL8K_ENCR_SET_GROUP_KEY;
4048
4049         switch (key->cipher) {
4050         case WLAN_CIPHER_SUITE_WEP40:
4051         case WLAN_CIPHER_SUITE_WEP104:
4052                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4053                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4054                                                 sizeof(*key) + key->keylen);
4055                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4056                 }
4057
4058                 keymlen = key->keylen;
4059                 action = MWL8K_ENCR_SET_KEY;
4060                 break;
4061         case WLAN_CIPHER_SUITE_TKIP:
4062                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4063                 break;
4064         case WLAN_CIPHER_SUITE_CCMP:
4065                 keymlen = key->keylen;
4066                 break;
4067         default:
4068                 rc = -ENOTSUPP;
4069                 goto done;
4070         }
4071
4072         memcpy(cmd->key_material, key->key, keymlen);
4073         cmd->action = cpu_to_le32(action);
4074
4075         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4076 done:
4077         kfree(cmd);
4078
4079         return rc;
4080 }
4081
4082 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4083                                                 struct ieee80211_vif *vif,
4084                                                 u8 *addr,
4085                                                 struct ieee80211_key_conf *key)
4086 {
4087         struct mwl8k_cmd_set_key *cmd;
4088         int rc;
4089         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4090
4091         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4092         if (cmd == NULL)
4093                 return -ENOMEM;
4094
4095         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4096         if (rc < 0)
4097                 goto done;
4098
4099         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4100                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4101                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4102
4103         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4104
4105         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4106 done:
4107         kfree(cmd);
4108
4109         return rc;
4110 }
4111
4112 static int mwl8k_set_key(struct ieee80211_hw *hw,
4113                          enum set_key_cmd cmd_param,
4114                          struct ieee80211_vif *vif,
4115                          struct ieee80211_sta *sta,
4116                          struct ieee80211_key_conf *key)
4117 {
4118         int rc = 0;
4119         u8 encr_type;
4120         u8 *addr;
4121         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4122
4123         if (vif->type == NL80211_IFTYPE_STATION)
4124                 return -EOPNOTSUPP;
4125
4126         if (sta == NULL)
4127                 addr = vif->addr;
4128         else
4129                 addr = sta->addr;
4130
4131         if (cmd_param == SET_KEY) {
4132                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4133                 if (rc)
4134                         goto out;
4135
4136                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4137                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4138                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4139                 else
4140                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4141
4142                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4143                                                                 encr_type);
4144                 if (rc)
4145                         goto out;
4146
4147                 mwl8k_vif->is_hw_crypto_enabled = true;
4148
4149         } else {
4150                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4151
4152                 if (rc)
4153                         goto out;
4154         }
4155 out:
4156         return rc;
4157 }
4158
4159 /*
4160  * CMD_UPDATE_STADB.
4161  */
4162 struct ewc_ht_info {
4163         __le16  control1;
4164         __le16  control2;
4165         __le16  control3;
4166 } __packed;
4167
4168 struct peer_capability_info {
4169         /* Peer type - AP vs. STA.  */
4170         __u8    peer_type;
4171
4172         /* Basic 802.11 capabilities from assoc resp.  */
4173         __le16  basic_caps;
4174
4175         /* Set if peer supports 802.11n high throughput (HT).  */
4176         __u8    ht_support;
4177
4178         /* Valid if HT is supported.  */
4179         __le16  ht_caps;
4180         __u8    extended_ht_caps;
4181         struct ewc_ht_info      ewc_info;
4182
4183         /* Legacy rate table. Intersection of our rates and peer rates.  */
4184         __u8    legacy_rates[12];
4185
4186         /* HT rate table. Intersection of our rates and peer rates.  */
4187         __u8    ht_rates[16];
4188         __u8    pad[16];
4189
4190         /* If set, interoperability mode, no proprietary extensions.  */
4191         __u8    interop;
4192         __u8    pad2;
4193         __u8    station_id;
4194         __le16  amsdu_enabled;
4195 } __packed;
4196
4197 struct mwl8k_cmd_update_stadb {
4198         struct mwl8k_cmd_pkt header;
4199
4200         /* See STADB_ACTION_TYPE */
4201         __le32  action;
4202
4203         /* Peer MAC address */
4204         __u8    peer_addr[ETH_ALEN];
4205
4206         __le32  reserved;
4207
4208         /* Peer info - valid during add/update.  */
4209         struct peer_capability_info     peer_info;
4210 } __packed;
4211
4212 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4213 #define MWL8K_STA_DB_DEL_ENTRY          2
4214
4215 /* Peer Entry flags - used to define the type of the peer node */
4216 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4217
4218 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4219                                       struct ieee80211_vif *vif,
4220                                       struct ieee80211_sta *sta)
4221 {
4222         struct mwl8k_cmd_update_stadb *cmd;
4223         struct peer_capability_info *p;
4224         u32 rates;
4225         int rc;
4226
4227         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4228         if (cmd == NULL)
4229                 return -ENOMEM;
4230
4231         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4232         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4233         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4234         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4235
4236         p = &cmd->peer_info;
4237         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4238         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4239         p->ht_support = sta->ht_cap.ht_supported;
4240         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4241         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4242                 ((sta->ht_cap.ampdu_density & 7) << 2);
4243         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4244                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4245         else
4246                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4247         legacy_rate_mask_to_array(p->legacy_rates, rates);
4248         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4249         p->interop = 1;
4250         p->amsdu_enabled = 0;
4251
4252         rc = mwl8k_post_cmd(hw, &cmd->header);
4253         if (!rc)
4254                 rc = p->station_id;
4255         kfree(cmd);
4256
4257         return rc;
4258 }
4259
4260 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4261                                       struct ieee80211_vif *vif, u8 *addr)
4262 {
4263         struct mwl8k_cmd_update_stadb *cmd;
4264         int rc;
4265
4266         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4267         if (cmd == NULL)
4268                 return -ENOMEM;
4269
4270         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4271         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4272         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4273         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4274
4275         rc = mwl8k_post_cmd(hw, &cmd->header);
4276         kfree(cmd);
4277
4278         return rc;
4279 }
4280
4281
4282 /*
4283  * Interrupt handling.
4284  */
4285 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4286 {
4287         struct ieee80211_hw *hw = dev_id;
4288         struct mwl8k_priv *priv = hw->priv;
4289         u32 status;
4290
4291         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4292         if (!status)
4293                 return IRQ_NONE;
4294
4295         if (status & MWL8K_A2H_INT_TX_DONE) {
4296                 status &= ~MWL8K_A2H_INT_TX_DONE;
4297                 tasklet_schedule(&priv->poll_tx_task);
4298         }
4299
4300         if (status & MWL8K_A2H_INT_RX_READY) {
4301                 status &= ~MWL8K_A2H_INT_RX_READY;
4302                 tasklet_schedule(&priv->poll_rx_task);
4303         }
4304
4305         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4306                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4307                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4308         }
4309
4310         if (status)
4311                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4312
4313         if (status & MWL8K_A2H_INT_OPC_DONE) {
4314                 if (priv->hostcmd_wait != NULL)
4315                         complete(priv->hostcmd_wait);
4316         }
4317
4318         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4319                 if (!mutex_is_locked(&priv->fw_mutex) &&
4320                     priv->radio_on && priv->pending_tx_pkts)
4321                         mwl8k_tx_start(priv);
4322         }
4323
4324         return IRQ_HANDLED;
4325 }
4326
4327 static void mwl8k_tx_poll(unsigned long data)
4328 {
4329         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4330         struct mwl8k_priv *priv = hw->priv;
4331         int limit;
4332         int i;
4333
4334         limit = 32;
4335
4336         spin_lock_bh(&priv->tx_lock);
4337
4338         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4339                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4340
4341         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4342                 complete(priv->tx_wait);
4343                 priv->tx_wait = NULL;
4344         }
4345
4346         spin_unlock_bh(&priv->tx_lock);
4347
4348         if (limit) {
4349                 writel(~MWL8K_A2H_INT_TX_DONE,
4350                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4351         } else {
4352                 tasklet_schedule(&priv->poll_tx_task);
4353         }
4354 }
4355
4356 static void mwl8k_rx_poll(unsigned long data)
4357 {
4358         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4359         struct mwl8k_priv *priv = hw->priv;
4360         int limit;
4361
4362         limit = 32;
4363         limit -= rxq_process(hw, 0, limit);
4364         limit -= rxq_refill(hw, 0, limit);
4365
4366         if (limit) {
4367                 writel(~MWL8K_A2H_INT_RX_READY,
4368                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4369         } else {
4370                 tasklet_schedule(&priv->poll_rx_task);
4371         }
4372 }
4373
4374
4375 /*
4376  * Core driver operations.
4377  */
4378 static void mwl8k_tx(struct ieee80211_hw *hw,
4379                      struct ieee80211_tx_control *control,
4380                      struct sk_buff *skb)
4381 {
4382         struct mwl8k_priv *priv = hw->priv;
4383         int index = skb_get_queue_mapping(skb);
4384
4385         if (!priv->radio_on) {
4386                 wiphy_debug(hw->wiphy,
4387                             "dropped TX frame since radio disabled\n");
4388                 dev_kfree_skb(skb);
4389                 return;
4390         }
4391
4392         mwl8k_txq_xmit(hw, index, control->sta, skb);
4393 }
4394
4395 static int mwl8k_start(struct ieee80211_hw *hw)
4396 {
4397         struct mwl8k_priv *priv = hw->priv;
4398         int rc;
4399
4400         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4401                          IRQF_SHARED, MWL8K_NAME, hw);
4402         if (rc) {
4403                 priv->irq = -1;
4404                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4405                 return -EIO;
4406         }
4407         priv->irq = priv->pdev->irq;
4408
4409         /* Enable TX reclaim and RX tasklets.  */
4410         tasklet_enable(&priv->poll_tx_task);
4411         tasklet_enable(&priv->poll_rx_task);
4412
4413         /* Enable interrupts */
4414         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4415         iowrite32(MWL8K_A2H_EVENTS,
4416                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4417
4418         rc = mwl8k_fw_lock(hw);
4419         if (!rc) {
4420                 rc = mwl8k_cmd_radio_enable(hw);
4421
4422                 if (!priv->ap_fw) {
4423                         if (!rc)
4424                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4425
4426                         if (!rc)
4427                                 rc = mwl8k_cmd_set_pre_scan(hw);
4428
4429                         if (!rc)
4430                                 rc = mwl8k_cmd_set_post_scan(hw,
4431                                                 "\x00\x00\x00\x00\x00\x00");
4432                 }
4433
4434                 if (!rc)
4435                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4436
4437                 if (!rc)
4438                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4439
4440                 mwl8k_fw_unlock(hw);
4441         }
4442
4443         if (rc) {
4444                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4445                 free_irq(priv->pdev->irq, hw);
4446                 priv->irq = -1;
4447                 tasklet_disable(&priv->poll_tx_task);
4448                 tasklet_disable(&priv->poll_rx_task);
4449         }
4450
4451         return rc;
4452 }
4453
4454 static void mwl8k_stop(struct ieee80211_hw *hw)
4455 {
4456         struct mwl8k_priv *priv = hw->priv;
4457         int i;
4458
4459         if (!priv->hw_restart_in_progress)
4460                 mwl8k_cmd_radio_disable(hw);
4461
4462         ieee80211_stop_queues(hw);
4463
4464         /* Disable interrupts */
4465         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4466         if (priv->irq != -1) {
4467                 free_irq(priv->pdev->irq, hw);
4468                 priv->irq = -1;
4469         }
4470
4471         /* Stop finalize join worker */
4472         cancel_work_sync(&priv->finalize_join_worker);
4473         cancel_work_sync(&priv->watchdog_ba_handle);
4474         if (priv->beacon_skb != NULL)
4475                 dev_kfree_skb(priv->beacon_skb);
4476
4477         /* Stop TX reclaim and RX tasklets.  */
4478         tasklet_disable(&priv->poll_tx_task);
4479         tasklet_disable(&priv->poll_rx_task);
4480
4481         /* Return all skbs to mac80211 */
4482         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4483                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4484 }
4485
4486 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4487
4488 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4489                                struct ieee80211_vif *vif)
4490 {
4491         struct mwl8k_priv *priv = hw->priv;
4492         struct mwl8k_vif *mwl8k_vif;
4493         u32 macids_supported;
4494         int macid, rc;
4495         struct mwl8k_device_info *di;
4496
4497         /*
4498          * Reject interface creation if sniffer mode is active, as
4499          * STA operation is mutually exclusive with hardware sniffer
4500          * mode.  (Sniffer mode is only used on STA firmware.)
4501          */
4502         if (priv->sniffer_enabled) {
4503                 wiphy_info(hw->wiphy,
4504                            "unable to create STA interface because sniffer mode is enabled\n");
4505                 return -EINVAL;
4506         }
4507
4508         di = priv->device_info;
4509         switch (vif->type) {
4510         case NL80211_IFTYPE_AP:
4511                 if (!priv->ap_fw && di->fw_image_ap) {
4512                         /* we must load the ap fw to meet this request */
4513                         if (!list_empty(&priv->vif_list))
4514                                 return -EBUSY;
4515                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4516                         if (rc)
4517                                 return rc;
4518                 }
4519                 macids_supported = priv->ap_macids_supported;
4520                 break;
4521         case NL80211_IFTYPE_STATION:
4522                 if (priv->ap_fw && di->fw_image_sta) {
4523                         /* we must load the sta fw to meet this request */
4524                         if (!list_empty(&priv->vif_list))
4525                                 return -EBUSY;
4526                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4527                         if (rc)
4528                                 return rc;
4529                 }
4530                 macids_supported = priv->sta_macids_supported;
4531                 break;
4532         default:
4533                 return -EINVAL;
4534         }
4535
4536         macid = ffs(macids_supported & ~priv->macids_used);
4537         if (!macid--)
4538                 return -EBUSY;
4539
4540         /* Setup driver private area. */
4541         mwl8k_vif = MWL8K_VIF(vif);
4542         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4543         mwl8k_vif->vif = vif;
4544         mwl8k_vif->macid = macid;
4545         mwl8k_vif->seqno = 0;
4546         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4547         mwl8k_vif->is_hw_crypto_enabled = false;
4548
4549         /* Set the mac address.  */
4550         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4551
4552         if (priv->ap_fw)
4553                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4554
4555         priv->macids_used |= 1 << mwl8k_vif->macid;
4556         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4557
4558         return 0;
4559 }
4560
4561 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4562 {
4563         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4564         if (!priv->macids_used)
4565                 return;
4566
4567         priv->macids_used &= ~(1 << vif->macid);
4568         list_del(&vif->list);
4569 }
4570
4571 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4572                                    struct ieee80211_vif *vif)
4573 {
4574         struct mwl8k_priv *priv = hw->priv;
4575         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4576
4577         if (priv->ap_fw)
4578                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4579
4580         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4581
4582         mwl8k_remove_vif(priv, mwl8k_vif);
4583 }
4584
4585 static void mwl8k_hw_restart_work(struct work_struct *work)
4586 {
4587         struct mwl8k_priv *priv =
4588                 container_of(work, struct mwl8k_priv, fw_reload);
4589         struct ieee80211_hw *hw = priv->hw;
4590         struct mwl8k_device_info *di;
4591         int rc;
4592
4593         /* If some command is waiting for a response, clear it */
4594         if (priv->hostcmd_wait != NULL) {
4595                 complete(priv->hostcmd_wait);
4596                 priv->hostcmd_wait = NULL;
4597         }
4598
4599         priv->hw_restart_owner = current;
4600         di = priv->device_info;
4601         mwl8k_fw_lock(hw);
4602
4603         if (priv->ap_fw)
4604                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4605         else
4606                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4607
4608         if (rc)
4609                 goto fail;
4610
4611         priv->hw_restart_owner = NULL;
4612         priv->hw_restart_in_progress = false;
4613
4614         /*
4615          * This unlock will wake up the queues and
4616          * also opens the command path for other
4617          * commands
4618          */
4619         mwl8k_fw_unlock(hw);
4620
4621         ieee80211_restart_hw(hw);
4622
4623         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4624
4625         return;
4626 fail:
4627         mwl8k_fw_unlock(hw);
4628
4629         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4630 }
4631
4632 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4633 {
4634         struct ieee80211_conf *conf = &hw->conf;
4635         struct mwl8k_priv *priv = hw->priv;
4636         int rc;
4637
4638         if (conf->flags & IEEE80211_CONF_IDLE) {
4639                 mwl8k_cmd_radio_disable(hw);
4640                 return 0;
4641         }
4642
4643         rc = mwl8k_fw_lock(hw);
4644         if (rc)
4645                 return rc;
4646
4647         rc = mwl8k_cmd_radio_enable(hw);
4648         if (rc)
4649                 goto out;
4650
4651         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4652         if (rc)
4653                 goto out;
4654
4655         if (conf->power_level > 18)
4656                 conf->power_level = 18;
4657
4658         if (priv->ap_fw) {
4659
4660                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4661                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4662                         if (rc)
4663                                 goto out;
4664                 }
4665
4666                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4667                 if (rc)
4668                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4669                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4670                 if (rc)
4671                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4672
4673         } else {
4674                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4675                 if (rc)
4676                         goto out;
4677                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4678         }
4679
4680 out:
4681         mwl8k_fw_unlock(hw);
4682
4683         return rc;
4684 }
4685
4686 static void
4687 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4688                            struct ieee80211_bss_conf *info, u32 changed)
4689 {
4690         struct mwl8k_priv *priv = hw->priv;
4691         u32 ap_legacy_rates = 0;
4692         u8 ap_mcs_rates[16];
4693         int rc;
4694
4695         if (mwl8k_fw_lock(hw))
4696                 return;
4697
4698         /*
4699          * No need to capture a beacon if we're no longer associated.
4700          */
4701         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4702                 priv->capture_beacon = false;
4703
4704         /*
4705          * Get the AP's legacy and MCS rates.
4706          */
4707         if (vif->bss_conf.assoc) {
4708                 struct ieee80211_sta *ap;
4709
4710                 rcu_read_lock();
4711
4712                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4713                 if (ap == NULL) {
4714                         rcu_read_unlock();
4715                         goto out;
4716                 }
4717
4718                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4719                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4720                 } else {
4721                         ap_legacy_rates =
4722                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4723                 }
4724                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4725
4726                 rcu_read_unlock();
4727         }
4728
4729         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4730                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4731                 if (rc)
4732                         goto out;
4733
4734                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4735                 if (rc)
4736                         goto out;
4737         }
4738
4739         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4740                 rc = mwl8k_set_radio_preamble(hw,
4741                                 vif->bss_conf.use_short_preamble);
4742                 if (rc)
4743                         goto out;
4744         }
4745
4746         if (changed & BSS_CHANGED_ERP_SLOT) {
4747                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4748                 if (rc)
4749                         goto out;
4750         }
4751
4752         if (vif->bss_conf.assoc &&
4753             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4754                         BSS_CHANGED_HT))) {
4755                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4756                 if (rc)
4757                         goto out;
4758         }
4759
4760         if (vif->bss_conf.assoc &&
4761             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4762                 /*
4763                  * Finalize the join.  Tell rx handler to process
4764                  * next beacon from our BSSID.
4765                  */
4766                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4767                 priv->capture_beacon = true;
4768         }
4769
4770 out:
4771         mwl8k_fw_unlock(hw);
4772 }
4773
4774 static void
4775 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4776                           struct ieee80211_bss_conf *info, u32 changed)
4777 {
4778         int rc;
4779
4780         if (mwl8k_fw_lock(hw))
4781                 return;
4782
4783         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4784                 rc = mwl8k_set_radio_preamble(hw,
4785                                 vif->bss_conf.use_short_preamble);
4786                 if (rc)
4787                         goto out;
4788         }
4789
4790         if (changed & BSS_CHANGED_BASIC_RATES) {
4791                 int idx;
4792                 int rate;
4793
4794                 /*
4795                  * Use lowest supported basic rate for multicasts
4796                  * and management frames (such as probe responses --
4797                  * beacons will always go out at 1 Mb/s).
4798                  */
4799                 idx = ffs(vif->bss_conf.basic_rates);
4800                 if (idx)
4801                         idx--;
4802
4803                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4804                         rate = mwl8k_rates_24[idx].hw_value;
4805                 else
4806                         rate = mwl8k_rates_50[idx].hw_value;
4807
4808                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4809         }
4810
4811         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4812                 struct sk_buff *skb;
4813
4814                 skb = ieee80211_beacon_get(hw, vif);
4815                 if (skb != NULL) {
4816                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4817                         kfree_skb(skb);
4818                 }
4819         }
4820
4821         if (changed & BSS_CHANGED_BEACON_ENABLED)
4822                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4823
4824 out:
4825         mwl8k_fw_unlock(hw);
4826 }
4827
4828 static void
4829 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4830                        struct ieee80211_bss_conf *info, u32 changed)
4831 {
4832         struct mwl8k_priv *priv = hw->priv;
4833
4834         if (!priv->ap_fw)
4835                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4836         else
4837                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4838 }
4839
4840 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4841                                    struct netdev_hw_addr_list *mc_list)
4842 {
4843         struct mwl8k_cmd_pkt *cmd;
4844
4845         /*
4846          * Synthesize and return a command packet that programs the
4847          * hardware multicast address filter.  At this point we don't
4848          * know whether FIF_ALLMULTI is being requested, but if it is,
4849          * we'll end up throwing this packet away and creating a new
4850          * one in mwl8k_configure_filter().
4851          */
4852         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4853
4854         return (unsigned long)cmd;
4855 }
4856
4857 static int
4858 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4859                                unsigned int changed_flags,
4860                                unsigned int *total_flags)
4861 {
4862         struct mwl8k_priv *priv = hw->priv;
4863
4864         /*
4865          * Hardware sniffer mode is mutually exclusive with STA
4866          * operation, so refuse to enable sniffer mode if a STA
4867          * interface is active.
4868          */
4869         if (!list_empty(&priv->vif_list)) {
4870                 if (net_ratelimit())
4871                         wiphy_info(hw->wiphy,
4872                                    "not enabling sniffer mode because STA interface is active\n");
4873                 return 0;
4874         }
4875
4876         if (!priv->sniffer_enabled) {
4877                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4878                         return 0;
4879                 priv->sniffer_enabled = true;
4880         }
4881
4882         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4883                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4884                         FIF_OTHER_BSS;
4885
4886         return 1;
4887 }
4888
4889 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4890 {
4891         if (!list_empty(&priv->vif_list))
4892                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4893
4894         return NULL;
4895 }
4896
4897 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4898                                    unsigned int changed_flags,
4899                                    unsigned int *total_flags,
4900                                    u64 multicast)
4901 {
4902         struct mwl8k_priv *priv = hw->priv;
4903         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4904
4905         /*
4906          * AP firmware doesn't allow fine-grained control over
4907          * the receive filter.
4908          */
4909         if (priv->ap_fw) {
4910                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4911                 kfree(cmd);
4912                 return;
4913         }
4914
4915         /*
4916          * Enable hardware sniffer mode if FIF_CONTROL or
4917          * FIF_OTHER_BSS is requested.
4918          */
4919         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4920             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4921                 kfree(cmd);
4922                 return;
4923         }
4924
4925         /* Clear unsupported feature flags */
4926         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4927
4928         if (mwl8k_fw_lock(hw)) {
4929                 kfree(cmd);
4930                 return;
4931         }
4932
4933         if (priv->sniffer_enabled) {
4934                 mwl8k_cmd_enable_sniffer(hw, 0);
4935                 priv->sniffer_enabled = false;
4936         }
4937
4938         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4939                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4940                         /*
4941                          * Disable the BSS filter.
4942                          */
4943                         mwl8k_cmd_set_pre_scan(hw);
4944                 } else {
4945                         struct mwl8k_vif *mwl8k_vif;
4946                         const u8 *bssid;
4947
4948                         /*
4949                          * Enable the BSS filter.
4950                          *
4951                          * If there is an active STA interface, use that
4952                          * interface's BSSID, otherwise use a dummy one
4953                          * (where the OUI part needs to be nonzero for
4954                          * the BSSID to be accepted by POST_SCAN).
4955                          */
4956                         mwl8k_vif = mwl8k_first_vif(priv);
4957                         if (mwl8k_vif != NULL)
4958                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4959                         else
4960                                 bssid = "\x01\x00\x00\x00\x00\x00";
4961
4962                         mwl8k_cmd_set_post_scan(hw, bssid);
4963                 }
4964         }
4965
4966         /*
4967          * If FIF_ALLMULTI is being requested, throw away the command
4968          * packet that ->prepare_multicast() built and replace it with
4969          * a command packet that enables reception of all multicast
4970          * packets.
4971          */
4972         if (*total_flags & FIF_ALLMULTI) {
4973                 kfree(cmd);
4974                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4975         }
4976
4977         if (cmd != NULL) {
4978                 mwl8k_post_cmd(hw, cmd);
4979                 kfree(cmd);
4980         }
4981
4982         mwl8k_fw_unlock(hw);
4983 }
4984
4985 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4986 {
4987         return mwl8k_cmd_set_rts_threshold(hw, value);
4988 }
4989
4990 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4991                             struct ieee80211_vif *vif,
4992                             struct ieee80211_sta *sta)
4993 {
4994         struct mwl8k_priv *priv = hw->priv;
4995
4996         if (priv->ap_fw)
4997                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4998         else
4999                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5000 }
5001
5002 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5003                          struct ieee80211_vif *vif,
5004                          struct ieee80211_sta *sta)
5005 {
5006         struct mwl8k_priv *priv = hw->priv;
5007         int ret;
5008         int i;
5009         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5010         struct ieee80211_key_conf *key;
5011
5012         if (!priv->ap_fw) {
5013                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5014                 if (ret >= 0) {
5015                         MWL8K_STA(sta)->peer_id = ret;
5016                         if (sta->ht_cap.ht_supported)
5017                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5018                         ret = 0;
5019                 }
5020
5021         } else {
5022                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5023         }
5024
5025         for (i = 0; i < NUM_WEP_KEYS; i++) {
5026                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5027                 if (mwl8k_vif->wep_key_conf[i].enabled)
5028                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5029         }
5030         return ret;
5031 }
5032
5033 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5034                          struct ieee80211_vif *vif, u16 queue,
5035                          const struct ieee80211_tx_queue_params *params)
5036 {
5037         struct mwl8k_priv *priv = hw->priv;
5038         int rc;
5039
5040         rc = mwl8k_fw_lock(hw);
5041         if (!rc) {
5042                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5043                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5044
5045                 if (!priv->wmm_enabled)
5046                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5047
5048                 if (!rc) {
5049                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5050                         rc = mwl8k_cmd_set_edca_params(hw, q,
5051                                                        params->cw_min,
5052                                                        params->cw_max,
5053                                                        params->aifs,
5054                                                        params->txop);
5055                 }
5056
5057                 mwl8k_fw_unlock(hw);
5058         }
5059
5060         return rc;
5061 }
5062
5063 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5064                            struct ieee80211_low_level_stats *stats)
5065 {
5066         return mwl8k_cmd_get_stat(hw, stats);
5067 }
5068
5069 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5070                                 struct survey_info *survey)
5071 {
5072         struct mwl8k_priv *priv = hw->priv;
5073         struct ieee80211_conf *conf = &hw->conf;
5074
5075         if (idx != 0)
5076                 return -ENOENT;
5077
5078         survey->channel = conf->channel;
5079         survey->filled = SURVEY_INFO_NOISE_DBM;
5080         survey->noise = priv->noise;
5081
5082         return 0;
5083 }
5084
5085 #define MAX_AMPDU_ATTEMPTS 5
5086
5087 static int
5088 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5089                    enum ieee80211_ampdu_mlme_action action,
5090                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5091                    u8 buf_size)
5092 {
5093
5094         int i, rc = 0;
5095         struct mwl8k_priv *priv = hw->priv;
5096         struct mwl8k_ampdu_stream *stream;
5097         u8 *addr = sta->addr;
5098         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5099
5100         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5101                 return -ENOTSUPP;
5102
5103         spin_lock(&priv->stream_lock);
5104         stream = mwl8k_lookup_stream(hw, addr, tid);
5105
5106         switch (action) {
5107         case IEEE80211_AMPDU_RX_START:
5108         case IEEE80211_AMPDU_RX_STOP:
5109                 break;
5110         case IEEE80211_AMPDU_TX_START:
5111                 /* By the time we get here the hw queues may contain outgoing
5112                  * packets for this RA/TID that are not part of this BA
5113                  * session.  The hw will assign sequence numbers to these
5114                  * packets as they go out.  So if we query the hw for its next
5115                  * sequence number and use that for the SSN here, it may end up
5116                  * being wrong, which will lead to sequence number mismatch at
5117                  * the recipient.  To avoid this, we reset the sequence number
5118                  * to O for the first MPDU in this BA stream.
5119                  */
5120                 *ssn = 0;
5121                 if (stream == NULL) {
5122                         /* This means that somebody outside this driver called
5123                          * ieee80211_start_tx_ba_session.  This is unexpected
5124                          * because we do our own rate control.  Just warn and
5125                          * move on.
5126                          */
5127                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5128                                    "Proceeding anyway.\n", __func__);
5129                         stream = mwl8k_add_stream(hw, sta, tid);
5130                 }
5131                 if (stream == NULL) {
5132                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5133                         rc = -EBUSY;
5134                         break;
5135                 }
5136                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5137
5138                 /* Release the lock before we do the time consuming stuff */
5139                 spin_unlock(&priv->stream_lock);
5140                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5141
5142                         /* Check if link is still valid */
5143                         if (!sta_info->is_ampdu_allowed) {
5144                                 spin_lock(&priv->stream_lock);
5145                                 mwl8k_remove_stream(hw, stream);
5146                                 spin_unlock(&priv->stream_lock);
5147                                 return -EBUSY;
5148                         }
5149
5150                         rc = mwl8k_check_ba(hw, stream, vif);
5151
5152                         /* If HW restart is in progress mwl8k_post_cmd will
5153                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5154                          * such cases
5155                          */
5156                         if (!rc || rc == -EBUSY)
5157                                 break;
5158                         /*
5159                          * HW queues take time to be flushed, give them
5160                          * sufficient time
5161                          */
5162
5163                         msleep(1000);
5164                 }
5165                 spin_lock(&priv->stream_lock);
5166                 if (rc) {
5167                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5168                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5169                         mwl8k_remove_stream(hw, stream);
5170                         rc = -EBUSY;
5171                         break;
5172                 }
5173                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5174                 break;
5175         case IEEE80211_AMPDU_TX_STOP:
5176                 if (stream) {
5177                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5178                                 spin_unlock(&priv->stream_lock);
5179                                 mwl8k_destroy_ba(hw, stream);
5180                                 spin_lock(&priv->stream_lock);
5181                         }
5182                         mwl8k_remove_stream(hw, stream);
5183                 }
5184                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5185                 break;
5186         case IEEE80211_AMPDU_TX_OPERATIONAL:
5187                 BUG_ON(stream == NULL);
5188                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5189                 spin_unlock(&priv->stream_lock);
5190                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5191                 spin_lock(&priv->stream_lock);
5192                 if (!rc)
5193                         stream->state = AMPDU_STREAM_ACTIVE;
5194                 else {
5195                         spin_unlock(&priv->stream_lock);
5196                         mwl8k_destroy_ba(hw, stream);
5197                         spin_lock(&priv->stream_lock);
5198                         wiphy_debug(hw->wiphy,
5199                                 "Failed adding stream for sta %pM tid %d\n",
5200                                 addr, tid);
5201                         mwl8k_remove_stream(hw, stream);
5202                 }
5203                 break;
5204
5205         default:
5206                 rc = -ENOTSUPP;
5207         }
5208
5209         spin_unlock(&priv->stream_lock);
5210         return rc;
5211 }
5212
5213 static const struct ieee80211_ops mwl8k_ops = {
5214         .tx                     = mwl8k_tx,
5215         .start                  = mwl8k_start,
5216         .stop                   = mwl8k_stop,
5217         .add_interface          = mwl8k_add_interface,
5218         .remove_interface       = mwl8k_remove_interface,
5219         .config                 = mwl8k_config,
5220         .bss_info_changed       = mwl8k_bss_info_changed,
5221         .prepare_multicast      = mwl8k_prepare_multicast,
5222         .configure_filter       = mwl8k_configure_filter,
5223         .set_key                = mwl8k_set_key,
5224         .set_rts_threshold      = mwl8k_set_rts_threshold,
5225         .sta_add                = mwl8k_sta_add,
5226         .sta_remove             = mwl8k_sta_remove,
5227         .conf_tx                = mwl8k_conf_tx,
5228         .get_stats              = mwl8k_get_stats,
5229         .get_survey             = mwl8k_get_survey,
5230         .ampdu_action           = mwl8k_ampdu_action,
5231 };
5232
5233 static void mwl8k_finalize_join_worker(struct work_struct *work)
5234 {
5235         struct mwl8k_priv *priv =
5236                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5237         struct sk_buff *skb = priv->beacon_skb;
5238         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5239         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5240         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5241                                          mgmt->u.beacon.variable, len);
5242         int dtim_period = 1;
5243
5244         if (tim && tim[1] >= 2)
5245                 dtim_period = tim[3];
5246
5247         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5248
5249         dev_kfree_skb(skb);
5250         priv->beacon_skb = NULL;
5251 }
5252
5253 enum {
5254         MWL8363 = 0,
5255         MWL8687,
5256         MWL8366,
5257 };
5258
5259 #define MWL8K_8366_AP_FW_API 2
5260 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5261 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5262
5263 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5264         [MWL8363] = {
5265                 .part_name      = "88w8363",
5266                 .helper_image   = "mwl8k/helper_8363.fw",
5267                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5268         },
5269         [MWL8687] = {
5270                 .part_name      = "88w8687",
5271                 .helper_image   = "mwl8k/helper_8687.fw",
5272                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5273         },
5274         [MWL8366] = {
5275                 .part_name      = "88w8366",
5276                 .helper_image   = "mwl8k/helper_8366.fw",
5277                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5278                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5279                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5280                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5281         },
5282 };
5283
5284 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5285 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5286 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5287 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5288 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5289 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5290 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5291
5292 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5293         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5294         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5295         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5296         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5297         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5298         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5299         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5300         { },
5301 };
5302 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5303
5304 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5305 {
5306         int rc;
5307         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5308                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5309                priv->fw_pref, priv->fw_alt);
5310         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5311         if (rc) {
5312                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5313                        pci_name(priv->pdev), priv->fw_alt);
5314                 return rc;
5315         }
5316         return 0;
5317 }
5318
5319 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5320 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5321 {
5322         struct mwl8k_priv *priv = context;
5323         struct mwl8k_device_info *di = priv->device_info;
5324         int rc;
5325
5326         switch (priv->fw_state) {
5327         case FW_STATE_INIT:
5328                 if (!fw) {
5329                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5330                                pci_name(priv->pdev), di->helper_image);
5331                         goto fail;
5332                 }
5333                 priv->fw_helper = fw;
5334                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5335                                       true);
5336                 if (rc && priv->fw_alt) {
5337                         rc = mwl8k_request_alt_fw(priv);
5338                         if (rc)
5339                                 goto fail;
5340                         priv->fw_state = FW_STATE_LOADING_ALT;
5341                 } else if (rc)
5342                         goto fail;
5343                 else
5344                         priv->fw_state = FW_STATE_LOADING_PREF;
5345                 break;
5346
5347         case FW_STATE_LOADING_PREF:
5348                 if (!fw) {
5349                         if (priv->fw_alt) {
5350                                 rc = mwl8k_request_alt_fw(priv);
5351                                 if (rc)
5352                                         goto fail;
5353                                 priv->fw_state = FW_STATE_LOADING_ALT;
5354                         } else
5355                                 goto fail;
5356                 } else {
5357                         priv->fw_ucode = fw;
5358                         rc = mwl8k_firmware_load_success(priv);
5359                         if (rc)
5360                                 goto fail;
5361                         else
5362                                 complete(&priv->firmware_loading_complete);
5363                 }
5364                 break;
5365
5366         case FW_STATE_LOADING_ALT:
5367                 if (!fw) {
5368                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5369                                pci_name(priv->pdev), di->helper_image);
5370                         goto fail;
5371                 }
5372                 priv->fw_ucode = fw;
5373                 rc = mwl8k_firmware_load_success(priv);
5374                 if (rc)
5375                         goto fail;
5376                 else
5377                         complete(&priv->firmware_loading_complete);
5378                 break;
5379
5380         default:
5381                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5382                        MWL8K_NAME, priv->fw_state);
5383                 BUG_ON(1);
5384         }
5385
5386         return;
5387
5388 fail:
5389         priv->fw_state = FW_STATE_ERROR;
5390         complete(&priv->firmware_loading_complete);
5391         device_release_driver(&priv->pdev->dev);
5392         mwl8k_release_firmware(priv);
5393 }
5394
5395 #define MAX_RESTART_ATTEMPTS 1
5396 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5397                                bool nowait)
5398 {
5399         struct mwl8k_priv *priv = hw->priv;
5400         int rc;
5401         int count = MAX_RESTART_ATTEMPTS;
5402
5403 retry:
5404         /* Reset firmware and hardware */
5405         mwl8k_hw_reset(priv);
5406
5407         /* Ask userland hotplug daemon for the device firmware */
5408         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5409         if (rc) {
5410                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5411                 return rc;
5412         }
5413
5414         if (nowait)
5415                 return rc;
5416
5417         /* Load firmware into hardware */
5418         rc = mwl8k_load_firmware(hw);
5419         if (rc)
5420                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5421
5422         /* Reclaim memory once firmware is successfully loaded */
5423         mwl8k_release_firmware(priv);
5424
5425         if (rc && count) {
5426                 /* FW did not start successfully;
5427                  * lets try one more time
5428                  */
5429                 count--;
5430                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5431                 msleep(20);
5432                 goto retry;
5433         }
5434
5435         return rc;
5436 }
5437
5438 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5439 {
5440         struct mwl8k_priv *priv = hw->priv;
5441         int rc = 0;
5442         int i;
5443
5444         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5445                 rc = mwl8k_txq_init(hw, i);
5446                 if (rc)
5447                         break;
5448                 if (priv->ap_fw)
5449                         iowrite32(priv->txq[i].txd_dma,
5450                                   priv->sram + priv->txq_offset[i]);
5451         }
5452         return rc;
5453 }
5454
5455 /* initialize hw after successfully loading a firmware image */
5456 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5457 {
5458         struct mwl8k_priv *priv = hw->priv;
5459         int rc = 0;
5460         int i;
5461
5462         if (priv->ap_fw) {
5463                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5464                 if (priv->rxd_ops == NULL) {
5465                         wiphy_err(hw->wiphy,
5466                                   "Driver does not have AP firmware image support for this hardware\n");
5467                         goto err_stop_firmware;
5468                 }
5469         } else {
5470                 priv->rxd_ops = &rxd_sta_ops;
5471         }
5472
5473         priv->sniffer_enabled = false;
5474         priv->wmm_enabled = false;
5475         priv->pending_tx_pkts = 0;
5476
5477         rc = mwl8k_rxq_init(hw, 0);
5478         if (rc)
5479                 goto err_stop_firmware;
5480         rxq_refill(hw, 0, INT_MAX);
5481
5482         /* For the sta firmware, we need to know the dma addresses of tx queues
5483          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5484          * prior to issuing this command.  But for the AP case, we learn the
5485          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5486          * case we must initialize the tx queues after.
5487          */
5488         priv->num_ampdu_queues = 0;
5489         if (!priv->ap_fw) {
5490                 rc = mwl8k_init_txqs(hw);
5491                 if (rc)
5492                         goto err_free_queues;
5493         }
5494
5495         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5496         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5497         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5498                   MWL8K_A2H_INT_BA_WATCHDOG,
5499                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5500         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5501                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5502
5503         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5504                          IRQF_SHARED, MWL8K_NAME, hw);
5505         if (rc) {
5506                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5507                 goto err_free_queues;
5508         }
5509
5510         /*
5511          * When hw restart is requested,
5512          * mac80211 will take care of clearing
5513          * the ampdu streams, so do not clear
5514          * the ampdu state here
5515          */
5516         if (!priv->hw_restart_in_progress)
5517                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5518
5519         /*
5520          * Temporarily enable interrupts.  Initial firmware host
5521          * commands use interrupts and avoid polling.  Disable
5522          * interrupts when done.
5523          */
5524         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5525
5526         /* Get config data, mac addrs etc */
5527         if (priv->ap_fw) {
5528                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5529                 if (!rc)
5530                         rc = mwl8k_init_txqs(hw);
5531                 if (!rc)
5532                         rc = mwl8k_cmd_set_hw_spec(hw);
5533         } else {
5534                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5535         }
5536         if (rc) {
5537                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5538                 goto err_free_irq;
5539         }
5540
5541         /* Turn radio off */
5542         rc = mwl8k_cmd_radio_disable(hw);
5543         if (rc) {
5544                 wiphy_err(hw->wiphy, "Cannot disable\n");
5545                 goto err_free_irq;
5546         }
5547
5548         /* Clear MAC address */
5549         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5550         if (rc) {
5551                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5552                 goto err_free_irq;
5553         }
5554
5555         /* Disable interrupts */
5556         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5557         free_irq(priv->pdev->irq, hw);
5558
5559         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5560                    priv->device_info->part_name,
5561                    priv->hw_rev, hw->wiphy->perm_addr,
5562                    priv->ap_fw ? "AP" : "STA",
5563                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5564                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5565
5566         return 0;
5567
5568 err_free_irq:
5569         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5570         free_irq(priv->pdev->irq, hw);
5571
5572 err_free_queues:
5573         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5574                 mwl8k_txq_deinit(hw, i);
5575         mwl8k_rxq_deinit(hw, 0);
5576
5577 err_stop_firmware:
5578         mwl8k_hw_reset(priv);
5579
5580         return rc;
5581 }
5582
5583 /*
5584  * invoke mwl8k_reload_firmware to change the firmware image after the device
5585  * has already been registered
5586  */
5587 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5588 {
5589         int i, rc = 0;
5590         struct mwl8k_priv *priv = hw->priv;
5591         struct mwl8k_vif *vif, *tmp_vif;
5592
5593         mwl8k_stop(hw);
5594         mwl8k_rxq_deinit(hw, 0);
5595
5596         /*
5597          * All the existing interfaces are re-added by the ieee80211_reconfig;
5598          * which means driver should remove existing interfaces before calling
5599          * ieee80211_restart_hw
5600          */
5601         if (priv->hw_restart_in_progress)
5602                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5603                         mwl8k_remove_vif(priv, vif);
5604
5605         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5606                 mwl8k_txq_deinit(hw, i);
5607
5608         rc = mwl8k_init_firmware(hw, fw_image, false);
5609         if (rc)
5610                 goto fail;
5611
5612         rc = mwl8k_probe_hw(hw);
5613         if (rc)
5614                 goto fail;
5615
5616         if (priv->hw_restart_in_progress)
5617                 return rc;
5618
5619         rc = mwl8k_start(hw);
5620         if (rc)
5621                 goto fail;
5622
5623         rc = mwl8k_config(hw, ~0);
5624         if (rc)
5625                 goto fail;
5626
5627         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5628                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5629                 if (rc)
5630                         goto fail;
5631         }
5632
5633         return rc;
5634
5635 fail:
5636         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5637         return rc;
5638 }
5639
5640 static const struct ieee80211_iface_limit ap_if_limits[] = {
5641         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
5642 };
5643
5644 static const struct ieee80211_iface_combination ap_if_comb = {
5645         .limits = ap_if_limits,
5646         .n_limits = ARRAY_SIZE(ap_if_limits),
5647         .max_interfaces = 8,
5648         .num_different_channels = 1,
5649 };
5650
5651
5652 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5653 {
5654         struct ieee80211_hw *hw = priv->hw;
5655         int i, rc;
5656
5657         rc = mwl8k_load_firmware(hw);
5658         mwl8k_release_firmware(priv);
5659         if (rc) {
5660                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5661                 return rc;
5662         }
5663
5664         /*
5665          * Extra headroom is the size of the required DMA header
5666          * minus the size of the smallest 802.11 frame (CTS frame).
5667          */
5668         hw->extra_tx_headroom =
5669                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5670
5671         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5672
5673         hw->channel_change_time = 10;
5674
5675         hw->queues = MWL8K_TX_WMM_QUEUES;
5676
5677         /* Set rssi values to dBm */
5678         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5679
5680         /*
5681          * Ask mac80211 to not to trigger PS mode
5682          * based on PM bit of incoming frames.
5683          */
5684         if (priv->ap_fw)
5685                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5686
5687         hw->vif_data_size = sizeof(struct mwl8k_vif);
5688         hw->sta_data_size = sizeof(struct mwl8k_sta);
5689
5690         priv->macids_used = 0;
5691         INIT_LIST_HEAD(&priv->vif_list);
5692
5693         /* Set default radio state and preamble */
5694         priv->radio_on = false;
5695         priv->radio_short_preamble = false;
5696
5697         /* Finalize join worker */
5698         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5699         /* Handle watchdog ba events */
5700         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5701         /* To reload the firmware if it crashes */
5702         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5703
5704         /* TX reclaim and RX tasklets.  */
5705         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5706         tasklet_disable(&priv->poll_tx_task);
5707         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5708         tasklet_disable(&priv->poll_rx_task);
5709
5710         /* Power management cookie */
5711         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5712         if (priv->cookie == NULL)
5713                 return -ENOMEM;
5714
5715         mutex_init(&priv->fw_mutex);
5716         priv->fw_mutex_owner = NULL;
5717         priv->fw_mutex_depth = 0;
5718         priv->hostcmd_wait = NULL;
5719
5720         spin_lock_init(&priv->tx_lock);
5721
5722         spin_lock_init(&priv->stream_lock);
5723
5724         priv->tx_wait = NULL;
5725
5726         rc = mwl8k_probe_hw(hw);
5727         if (rc)
5728                 goto err_free_cookie;
5729
5730         hw->wiphy->interface_modes = 0;
5731
5732         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5733                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5734                 hw->wiphy->iface_combinations = &ap_if_comb;
5735                 hw->wiphy->n_iface_combinations = 1;
5736         }
5737
5738         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5739                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5740
5741         rc = ieee80211_register_hw(hw);
5742         if (rc) {
5743                 wiphy_err(hw->wiphy, "Cannot register device\n");
5744                 goto err_unprobe_hw;
5745         }
5746
5747         return 0;
5748
5749 err_unprobe_hw:
5750         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5751                 mwl8k_txq_deinit(hw, i);
5752         mwl8k_rxq_deinit(hw, 0);
5753
5754 err_free_cookie:
5755         if (priv->cookie != NULL)
5756                 pci_free_consistent(priv->pdev, 4,
5757                                 priv->cookie, priv->cookie_dma);
5758
5759         return rc;
5760 }
5761 static int mwl8k_probe(struct pci_dev *pdev,
5762                                  const struct pci_device_id *id)
5763 {
5764         static int printed_version;
5765         struct ieee80211_hw *hw;
5766         struct mwl8k_priv *priv;
5767         struct mwl8k_device_info *di;
5768         int rc;
5769
5770         if (!printed_version) {
5771                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5772                 printed_version = 1;
5773         }
5774
5775
5776         rc = pci_enable_device(pdev);
5777         if (rc) {
5778                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5779                        MWL8K_NAME);
5780                 return rc;
5781         }
5782
5783         rc = pci_request_regions(pdev, MWL8K_NAME);
5784         if (rc) {
5785                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5786                        MWL8K_NAME);
5787                 goto err_disable_device;
5788         }
5789
5790         pci_set_master(pdev);
5791
5792
5793         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5794         if (hw == NULL) {
5795                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5796                 rc = -ENOMEM;
5797                 goto err_free_reg;
5798         }
5799
5800         SET_IEEE80211_DEV(hw, &pdev->dev);
5801         pci_set_drvdata(pdev, hw);
5802
5803         priv = hw->priv;
5804         priv->hw = hw;
5805         priv->pdev = pdev;
5806         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5807
5808
5809         priv->sram = pci_iomap(pdev, 0, 0x10000);
5810         if (priv->sram == NULL) {
5811                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5812                 goto err_iounmap;
5813         }
5814
5815         /*
5816          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5817          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5818          */
5819         priv->regs = pci_iomap(pdev, 1, 0x10000);
5820         if (priv->regs == NULL) {
5821                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5822                 if (priv->regs == NULL) {
5823                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5824                         goto err_iounmap;
5825                 }
5826         }
5827
5828         /*
5829          * Choose the initial fw image depending on user input.  If a second
5830          * image is available, make it the alternative image that will be
5831          * loaded if the first one fails.
5832          */
5833         init_completion(&priv->firmware_loading_complete);
5834         di = priv->device_info;
5835         if (ap_mode_default && di->fw_image_ap) {
5836                 priv->fw_pref = di->fw_image_ap;
5837                 priv->fw_alt = di->fw_image_sta;
5838         } else if (!ap_mode_default && di->fw_image_sta) {
5839                 priv->fw_pref = di->fw_image_sta;
5840                 priv->fw_alt = di->fw_image_ap;
5841         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5842                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5843                 priv->fw_pref = di->fw_image_sta;
5844         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5845                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5846                 priv->fw_pref = di->fw_image_ap;
5847         }
5848         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5849         if (rc)
5850                 goto err_stop_firmware;
5851
5852         priv->hw_restart_in_progress = false;
5853
5854         return rc;
5855
5856 err_stop_firmware:
5857         mwl8k_hw_reset(priv);
5858
5859 err_iounmap:
5860         if (priv->regs != NULL)
5861                 pci_iounmap(pdev, priv->regs);
5862
5863         if (priv->sram != NULL)
5864                 pci_iounmap(pdev, priv->sram);
5865
5866         pci_set_drvdata(pdev, NULL);
5867         ieee80211_free_hw(hw);
5868
5869 err_free_reg:
5870         pci_release_regions(pdev);
5871
5872 err_disable_device:
5873         pci_disable_device(pdev);
5874
5875         return rc;
5876 }
5877
5878 static void mwl8k_remove(struct pci_dev *pdev)
5879 {
5880         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5881         struct mwl8k_priv *priv;
5882         int i;
5883
5884         if (hw == NULL)
5885                 return;
5886         priv = hw->priv;
5887
5888         wait_for_completion(&priv->firmware_loading_complete);
5889
5890         if (priv->fw_state == FW_STATE_ERROR) {
5891                 mwl8k_hw_reset(priv);
5892                 goto unmap;
5893         }
5894
5895         ieee80211_stop_queues(hw);
5896
5897         ieee80211_unregister_hw(hw);
5898
5899         /* Remove TX reclaim and RX tasklets.  */
5900         tasklet_kill(&priv->poll_tx_task);
5901         tasklet_kill(&priv->poll_rx_task);
5902
5903         /* Stop hardware */
5904         mwl8k_hw_reset(priv);
5905
5906         /* Return all skbs to mac80211 */
5907         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5908                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5909
5910         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5911                 mwl8k_txq_deinit(hw, i);
5912
5913         mwl8k_rxq_deinit(hw, 0);
5914
5915         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5916
5917 unmap:
5918         pci_iounmap(pdev, priv->regs);
5919         pci_iounmap(pdev, priv->sram);
5920         pci_set_drvdata(pdev, NULL);
5921         ieee80211_free_hw(hw);
5922         pci_release_regions(pdev);
5923         pci_disable_device(pdev);
5924 }
5925
5926 static struct pci_driver mwl8k_driver = {
5927         .name           = MWL8K_NAME,
5928         .id_table       = mwl8k_pci_id_table,
5929         .probe          = mwl8k_probe,
5930         .remove         = mwl8k_remove,
5931 };
5932
5933 module_pci_driver(mwl8k_driver);
5934
5935 MODULE_DESCRIPTION(MWL8K_DESC);
5936 MODULE_VERSION(MWL8K_VERSION);
5937 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5938 MODULE_LICENSE("GPL");