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 };
 164
 165 struct mwl8k_priv {
 166         struct ieee80211_hw *hw;
 167         struct pci_dev *pdev;
 168         int irq;
 169
 170         struct mwl8k_device_info *device_info;
 171
 172         void __iomem *sram;
 173         void __iomem *regs;
 174
 175         /* firmware */
 176         const struct firmware *fw_helper;
 177         const struct firmware *fw_ucode;
 178
 179         /* hardware/firmware parameters */
 180         bool ap_fw;
 181         struct rxd_ops *rxd_ops;
 182         struct ieee80211_supported_band band_24;
 183         struct ieee80211_channel channels_24[14];
 184         struct ieee80211_rate rates_24[14];
 185         struct ieee80211_supported_band band_50;
 186         struct ieee80211_channel channels_50[4];
 187         struct ieee80211_rate rates_50[9];
 188         u32 ap_macids_supported;
 189         u32 sta_macids_supported;
 190
 191         /* Ampdu stream information */
 192         u8 num_ampdu_queues;
 193         spinlock_t stream_lock;
 194         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 195         struct work_struct watchdog_ba_handle;
 196
 197         /* firmware access */
 198         struct mutex fw_mutex;
 199         struct task_struct *fw_mutex_owner;
 200         struct task_struct *hw_restart_owner;
 201         int fw_mutex_depth;
 202         struct completion *hostcmd_wait;
 203
 204         /* lock held over TX and TX reap */
 205         spinlock_t tx_lock;
 206
 207         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 208         struct completion *tx_wait;
 209
 210         /* List of interfaces.  */
 211         u32 macids_used;
 212         struct list_head vif_list;
 213
 214         /* power management status cookie from firmware */
 215         u32 *cookie;
 216         dma_addr_t cookie_dma;
 217
 218         u16 num_mcaddrs;
 219         u8 hw_rev;
 220         u32 fw_rev;
 221
 222         /*
 223          * Running count of TX packets in flight, to avoid
 224          * iterating over the transmit rings each time.
 225          */
 226         int pending_tx_pkts;
 227
 228         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 229         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 230         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 231
 232         bool radio_on;
 233         bool radio_short_preamble;
 234         bool sniffer_enabled;
 235         bool wmm_enabled;
 236
 237         /* XXX need to convert this to handle multiple interfaces */
 238         bool capture_beacon;
 239         u8 capture_bssid[ETH_ALEN];
 240         struct sk_buff *beacon_skb;
 241
 242         /*
 243          * This FJ worker has to be global as it is scheduled from the
 244          * RX handler.  At this point we don't know which interface it
 245          * belongs to until the list of bssids waiting to complete join
 246          * is checked.
 247          */
 248         struct work_struct finalize_join_worker;
 249
 250         /* Tasklet to perform TX reclaim.  */
 251         struct tasklet_struct poll_tx_task;
 252
 253         /* Tasklet to perform RX.  */
 254         struct tasklet_struct poll_rx_task;
 255
 256         /* Most recently reported noise in dBm */
 257         s8 noise;
 258
 259         /*
 260          * preserve the queue configurations so they can be restored if/when
 261          * the firmware image is swapped.
 262          */
 263         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 264
 265         /* To perform the task of reloading the firmware */
 266         struct work_struct fw_reload;
 267         bool hw_restart_in_progress;
 268
 269         /* async firmware loading state */
 270         unsigned fw_state;
 271         char *fw_pref;
 272         char *fw_alt;
 273         struct completion firmware_loading_complete;
 274 };
 275
 276 #define MAX_WEP_KEY_LEN         13
 277 #define NUM_WEP_KEYS            4
 278
 279 /* Per interface specific private data */
 280 struct mwl8k_vif {
 281         struct list_head list;
 282         struct ieee80211_vif *vif;
 283
 284         /* Firmware macid for this vif.  */
 285         int macid;
 286
 287         /* Non AMPDU sequence number assigned by driver.  */
 288         u16 seqno;
 289
 290         /* Saved WEP keys */
 291         struct {
 292                 u8 enabled;
 293                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 294         } wep_key_conf[NUM_WEP_KEYS];
 295
 296         /* BSSID */
 297         u8 bssid[ETH_ALEN];
 298
 299         /* A flag to indicate is HW crypto is enabled for this bssid */
 300         bool is_hw_crypto_enabled;
 301 };
 302 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 303 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 304
 305 struct tx_traffic_info {
 306         u32 start_time;
 307         u32 pkts;
 308 };
 309
 310 #define MWL8K_MAX_TID 8
 311 struct mwl8k_sta {
 312         /* Index into station database. Returned by UPDATE_STADB.  */
 313         u8 peer_id;
 314         u8 is_ampdu_allowed;
 315         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 316 };
 317 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 318
 319 static const struct ieee80211_channel mwl8k_channels_24[] = {
 320         { .center_freq = 2412, .hw_value = 1, },
 321         { .center_freq = 2417, .hw_value = 2, },
 322         { .center_freq = 2422, .hw_value = 3, },
 323         { .center_freq = 2427, .hw_value = 4, },
 324         { .center_freq = 2432, .hw_value = 5, },
 325         { .center_freq = 2437, .hw_value = 6, },
 326         { .center_freq = 2442, .hw_value = 7, },
 327         { .center_freq = 2447, .hw_value = 8, },
 328         { .center_freq = 2452, .hw_value = 9, },
 329         { .center_freq = 2457, .hw_value = 10, },
 330         { .center_freq = 2462, .hw_value = 11, },
 331         { .center_freq = 2467, .hw_value = 12, },
 332         { .center_freq = 2472, .hw_value = 13, },
 333         { .center_freq = 2484, .hw_value = 14, },
 334 };
 335
 336 static const struct ieee80211_rate mwl8k_rates_24[] = {
 337         { .bitrate = 10, .hw_value = 2, },
 338         { .bitrate = 20, .hw_value = 4, },
 339         { .bitrate = 55, .hw_value = 11, },
 340         { .bitrate = 110, .hw_value = 22, },
 341         { .bitrate = 220, .hw_value = 44, },
 342         { .bitrate = 60, .hw_value = 12, },
 343         { .bitrate = 90, .hw_value = 18, },
 344         { .bitrate = 120, .hw_value = 24, },
 345         { .bitrate = 180, .hw_value = 36, },
 346         { .bitrate = 240, .hw_value = 48, },
 347         { .bitrate = 360, .hw_value = 72, },
 348         { .bitrate = 480, .hw_value = 96, },
 349         { .bitrate = 540, .hw_value = 108, },
 350         { .bitrate = 720, .hw_value = 144, },
 351 };
 352
 353 static const struct ieee80211_channel mwl8k_channels_50[] = {
 354         { .center_freq = 5180, .hw_value = 36, },
 355         { .center_freq = 5200, .hw_value = 40, },
 356         { .center_freq = 5220, .hw_value = 44, },
 357         { .center_freq = 5240, .hw_value = 48, },
 358 };
 359
 360 static const struct ieee80211_rate mwl8k_rates_50[] = {
 361         { .bitrate = 60, .hw_value = 12, },
 362         { .bitrate = 90, .hw_value = 18, },
 363         { .bitrate = 120, .hw_value = 24, },
 364         { .bitrate = 180, .hw_value = 36, },
 365         { .bitrate = 240, .hw_value = 48, },
 366         { .bitrate = 360, .hw_value = 72, },
 367         { .bitrate = 480, .hw_value = 96, },
 368         { .bitrate = 540, .hw_value = 108, },
 369         { .bitrate = 720, .hw_value = 144, },
 370 };
 371
 372 /* Set or get info from Firmware */
 373 #define MWL8K_CMD_GET                   0x0000
 374 #define MWL8K_CMD_SET                   0x0001
 375 #define MWL8K_CMD_SET_LIST              0x0002
 376
 377 /* Firmware command codes */
 378 #define MWL8K_CMD_CODE_DNLD             0x0001
 379 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 380 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 381 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 382 #define MWL8K_CMD_GET_STAT              0x0014
 383 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 384 #define MWL8K_CMD_RF_TX_POWER           0x001e
 385 #define MWL8K_CMD_TX_POWER              0x001f
 386 #define MWL8K_CMD_RF_ANTENNA            0x0020
 387 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 388 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 389 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 390 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 391 #define MWL8K_CMD_SET_AID               0x010d
 392 #define MWL8K_CMD_SET_RATE              0x0110
 393 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 394 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 395 #define MWL8K_CMD_SET_SLOT              0x0114
 396 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 397 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 398 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 399 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 400 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 401 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 402 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 403 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 404 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 405 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 406 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 407 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 408 #define MWL8K_CMD_UPDATE_STADB          0x1123
 409 #define MWL8K_CMD_BASTREAM              0x1125
 410
 411 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 412 {
 413         u16 command = le16_to_cpu(cmd);
 414
 415 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 416                                         snprintf(buf, bufsize, "%s", #x);\
 417                                         return buf;\
 418                                         } while (0)
 419         switch (command & ~0x8000) {
 420                 MWL8K_CMDNAME(CODE_DNLD);
 421                 MWL8K_CMDNAME(GET_HW_SPEC);
 422                 MWL8K_CMDNAME(SET_HW_SPEC);
 423                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 424                 MWL8K_CMDNAME(GET_STAT);
 425                 MWL8K_CMDNAME(RADIO_CONTROL);
 426                 MWL8K_CMDNAME(RF_TX_POWER);
 427                 MWL8K_CMDNAME(TX_POWER);
 428                 MWL8K_CMDNAME(RF_ANTENNA);
 429                 MWL8K_CMDNAME(SET_BEACON);
 430                 MWL8K_CMDNAME(SET_PRE_SCAN);
 431                 MWL8K_CMDNAME(SET_POST_SCAN);
 432                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 433                 MWL8K_CMDNAME(SET_AID);
 434                 MWL8K_CMDNAME(SET_RATE);
 435                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 436                 MWL8K_CMDNAME(RTS_THRESHOLD);
 437                 MWL8K_CMDNAME(SET_SLOT);
 438                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 439                 MWL8K_CMDNAME(SET_WMM_MODE);
 440                 MWL8K_CMDNAME(MIMO_CONFIG);
 441                 MWL8K_CMDNAME(USE_FIXED_RATE);
 442                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 443                 MWL8K_CMDNAME(SET_MAC_ADDR);
 444                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 445                 MWL8K_CMDNAME(BSS_START);
 446                 MWL8K_CMDNAME(SET_NEW_STN);
 447                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 448                 MWL8K_CMDNAME(UPDATE_STADB);
 449                 MWL8K_CMDNAME(BASTREAM);
 450                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 451         default:
 452                 snprintf(buf, bufsize, "0x%x", cmd);
 453         }
 454 #undef MWL8K_CMDNAME
 455
 456         return buf;
 457 }
 458
 459 /* Hardware and firmware reset */
 460 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 461 {
 462         iowrite32(MWL8K_H2A_INT_RESET,
 463                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 464         iowrite32(MWL8K_H2A_INT_RESET,
 465                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 466         msleep(20);
 467 }
 468
 469 /* Release fw image */
 470 static void mwl8k_release_fw(const struct firmware **fw)
 471 {
 472         if (*fw == NULL)
 473                 return;
 474         release_firmware(*fw);
 475         *fw = NULL;
 476 }
 477
 478 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 479 {
 480         mwl8k_release_fw(&priv->fw_ucode);
 481         mwl8k_release_fw(&priv->fw_helper);
 482 }
 483
 484 /* states for asynchronous f/w loading */
 485 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 486 enum {
 487         FW_STATE_INIT = 0,
 488         FW_STATE_LOADING_PREF,
 489         FW_STATE_LOADING_ALT,
 490         FW_STATE_ERROR,
 491 };
 492
 493 /* Request fw image */
 494 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 495                             const char *fname, const struct firmware **fw,
 496                             bool nowait)
 497 {
 498         /* release current image */
 499         if (*fw != NULL)
 500                 mwl8k_release_fw(fw);
 501
 502         if (nowait)
 503                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 504                                                &priv->pdev->dev, GFP_KERNEL,
 505                                                priv, mwl8k_fw_state_machine);
 506         else
 507                 return request_firmware(fw, fname, &priv->pdev->dev);
 508 }
 509
 510 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 511                                   bool nowait)
 512 {
 513         struct mwl8k_device_info *di = priv->device_info;
 514         int rc;
 515
 516         if (di->helper_image != NULL) {
 517                 if (nowait)
 518                         rc = mwl8k_request_fw(priv, di->helper_image,
 519                                               &priv->fw_helper, true);
 520                 else
 521                         rc = mwl8k_request_fw(priv, di->helper_image,
 522                                               &priv->fw_helper, false);
 523                 if (rc)
 524                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 525                                pci_name(priv->pdev), di->helper_image);
 526
 527                 if (rc || nowait)
 528                         return rc;
 529         }
 530
 531         if (nowait) {
 532                 /*
 533                  * if we get here, no helper image is needed.  Skip the
 534                  * FW_STATE_INIT state.
 535                  */
 536                 priv->fw_state = FW_STATE_LOADING_PREF;
 537                 rc = mwl8k_request_fw(priv, fw_image,
 538                                       &priv->fw_ucode,
 539                                       true);
 540         } else
 541                 rc = mwl8k_request_fw(priv, fw_image,
 542                                       &priv->fw_ucode, false);
 543         if (rc) {
 544                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 545                        pci_name(priv->pdev), fw_image);
 546                 mwl8k_release_fw(&priv->fw_helper);
 547                 return rc;
 548         }
 549
 550         return 0;
 551 }
 552
 553 struct mwl8k_cmd_pkt {
 554         __le16  code;
 555         __le16  length;
 556         __u8    seq_num;
 557         __u8    macid;
 558         __le16  result;
 559         char    payload[0];
 560 } __packed;
 561
 562 /*
 563  * Firmware loading.
 564  */
 565 static int
 566 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 567 {
 568         void __iomem *regs = priv->regs;
 569         dma_addr_t dma_addr;
 570         int loops;
 571
 572         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 573         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 574                 return -ENOMEM;
 575
 576         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 577         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 578         iowrite32(MWL8K_H2A_INT_DOORBELL,
 579                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 580         iowrite32(MWL8K_H2A_INT_DUMMY,
 581                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 582
 583         loops = 1000;
 584         do {
 585                 u32 int_code;
 586
 587                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 588                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 589                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 590                         break;
 591                 }
 592
 593                 cond_resched();
 594                 udelay(1);
 595         } while (--loops);
 596
 597         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 598
 599         return loops ? 0 : -ETIMEDOUT;
 600 }
 601
 602 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 603                                 const u8 *data, size_t length)
 604 {
 605         struct mwl8k_cmd_pkt *cmd;
 606         int done;
 607         int rc = 0;
 608
 609         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 610         if (cmd == NULL)
 611                 return -ENOMEM;
 612
 613         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 614         cmd->seq_num = 0;
 615         cmd->macid = 0;
 616         cmd->result = 0;
 617
 618         done = 0;
 619         while (length) {
 620                 int block_size = length > 256 ? 256 : length;
 621
 622                 memcpy(cmd->payload, data + done, block_size);
 623                 cmd->length = cpu_to_le16(block_size);
 624
 625                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 626                                                 sizeof(*cmd) + block_size);
 627                 if (rc)
 628                         break;
 629
 630                 done += block_size;
 631                 length -= block_size;
 632         }
 633
 634         if (!rc) {
 635                 cmd->length = 0;
 636                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 637         }
 638
 639         kfree(cmd);
 640
 641         return rc;
 642 }
 643
 644 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 645                                 const u8 *data, size_t length)
 646 {
 647         unsigned char *buffer;
 648         int may_continue, rc = 0;
 649         u32 done, prev_block_size;
 650
 651         buffer = kmalloc(1024, GFP_KERNEL);
 652         if (buffer == NULL)
 653                 return -ENOMEM;
 654
 655         done = 0;
 656         prev_block_size = 0;
 657         may_continue = 1000;
 658         while (may_continue > 0) {
 659                 u32 block_size;
 660
 661                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 662                 if (block_size & 1) {
 663                         block_size &= ~1;
 664                         may_continue--;
 665                 } else {
 666                         done += prev_block_size;
 667                         length -= prev_block_size;
 668                 }
 669
 670                 if (block_size > 1024 || block_size > length) {
 671                         rc = -EOVERFLOW;
 672                         break;
 673                 }
 674
 675                 if (length == 0) {
 676                         rc = 0;
 677                         break;
 678                 }
 679
 680                 if (block_size == 0) {
 681                         rc = -EPROTO;
 682                         may_continue--;
 683                         udelay(1);
 684                         continue;
 685                 }
 686
 687                 prev_block_size = block_size;
 688                 memcpy(buffer, data + done, block_size);
 689
 690                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 691                 if (rc)
 692                         break;
 693         }
 694
 695         if (!rc && length != 0)
 696                 rc = -EREMOTEIO;
 697
 698         kfree(buffer);
 699
 700         return rc;
 701 }
 702
 703 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 704 {
 705         struct mwl8k_priv *priv = hw->priv;
 706         const struct firmware *fw = priv->fw_ucode;
 707         int rc;
 708         int loops;
 709
 710         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 711                 const struct firmware *helper = priv->fw_helper;
 712
 713                 if (helper == NULL) {
 714                         printk(KERN_ERR "%s: helper image needed but none "
 715                                "given\n", pci_name(priv->pdev));
 716                         return -EINVAL;
 717                 }
 718
 719                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 720                 if (rc) {
 721                         printk(KERN_ERR "%s: unable to load firmware "
 722                                "helper image\n", pci_name(priv->pdev));
 723                         return rc;
 724                 }
 725                 msleep(20);
 726
 727                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 728         } else {
 729                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 730         }
 731
 732         if (rc) {
 733                 printk(KERN_ERR "%s: unable to load firmware image\n",
 734                        pci_name(priv->pdev));
 735                 return rc;
 736         }
 737
 738         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 739
 740         loops = 500000;
 741         do {
 742                 u32 ready_code;
 743
 744                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 745                 if (ready_code == MWL8K_FWAP_READY) {
 746                         priv->ap_fw = true;
 747                         break;
 748                 } else if (ready_code == MWL8K_FWSTA_READY) {
 749                         priv->ap_fw = false;
 750                         break;
 751                 }
 752
 753                 cond_resched();
 754                 udelay(1);
 755         } while (--loops);
 756
 757         return loops ? 0 : -ETIMEDOUT;
 758 }
 759
 760
 761 /* DMA header used by firmware and hardware.  */
 762 struct mwl8k_dma_data {
 763         __le16 fwlen;
 764         struct ieee80211_hdr wh;
 765         char data[0];
 766 } __packed;
 767
 768 /* Routines to add/remove DMA header from skb.  */
 769 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 770 {
 771         struct mwl8k_dma_data *tr;
 772         int hdrlen;
 773
 774         tr = (struct mwl8k_dma_data *)skb->data;
 775         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 776
 777         if (hdrlen != sizeof(tr->wh)) {
 778                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 779                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 780                         *((__le16 *)(tr->data - 2)) = qos;
 781                 } else {
 782                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 783                 }
 784         }
 785
 786         if (hdrlen != sizeof(*tr))
 787                 skb_pull(skb, sizeof(*tr) - hdrlen);
 788 }
 789
 790 #define REDUCED_TX_HEADROOM     8
 791
 792 static void
 793 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 794                                                 int head_pad, int tail_pad)
 795 {
 796         struct ieee80211_hdr *wh;
 797         int hdrlen;
 798         int reqd_hdrlen;
 799         struct mwl8k_dma_data *tr;
 800
 801         /*
 802          * Add a firmware DMA header; the firmware requires that we
 803          * present a 2-byte payload length followed by a 4-address
 804          * header (without QoS field), followed (optionally) by any
 805          * WEP/ExtIV header (but only filled in for CCMP).
 806          */
 807         wh = (struct ieee80211_hdr *)skb->data;
 808
 809         hdrlen = ieee80211_hdrlen(wh->frame_control);
 810
 811         /*
 812          * Check if skb_resize is required because of
 813          * tx_headroom adjustment.
 814          */
 815         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 816                                                 + REDUCED_TX_HEADROOM))) {
 817                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 818
 819                         wiphy_err(priv->hw->wiphy,
 820                                         "Failed to reallocate TX buffer\n");
 821                         return;
 822                 }
 823                 skb->truesize += REDUCED_TX_HEADROOM;
 824         }
 825
 826         reqd_hdrlen = sizeof(*tr) + head_pad;
 827
 828         if (hdrlen != reqd_hdrlen)
 829                 skb_push(skb, reqd_hdrlen - hdrlen);
 830
 831         if (ieee80211_is_data_qos(wh->frame_control))
 832                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 833
 834         tr = (struct mwl8k_dma_data *)skb->data;
 835         if (wh != &tr->wh)
 836                 memmove(&tr->wh, wh, hdrlen);
 837         if (hdrlen != sizeof(tr->wh))
 838                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 839
 840         /*
 841          * Firmware length is the length of the fully formed "802.11
 842          * payload".  That is, everything except for the 802.11 header.
 843          * This includes all crypto material including the MIC.
 844          */
 845         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 846 }
 847
 848 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 849                 struct sk_buff *skb)
 850 {
 851         struct ieee80211_hdr *wh;
 852         struct ieee80211_tx_info *tx_info;
 853         struct ieee80211_key_conf *key_conf;
 854         int data_pad;
 855         int head_pad = 0;
 856
 857         wh = (struct ieee80211_hdr *)skb->data;
 858
 859         tx_info = IEEE80211_SKB_CB(skb);
 860
 861         key_conf = NULL;
 862         if (ieee80211_is_data(wh->frame_control))
 863                 key_conf = tx_info->control.hw_key;
 864
 865         /*
 866          * Make sure the packet header is in the DMA header format (4-address
 867          * without QoS), and add head & tail padding when HW crypto is enabled.
 868          *
 869          * We have the following trailer padding requirements:
 870          * - WEP: 4 trailer bytes (ICV)
 871          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 872          * - CCMP: 8 trailer bytes (MIC)
 873          */
 874         data_pad = 0;
 875         if (key_conf != NULL) {
 876                 head_pad = key_conf->iv_len;
 877                 switch (key_conf->cipher) {
 878                 case WLAN_CIPHER_SUITE_WEP40:
 879                 case WLAN_CIPHER_SUITE_WEP104:
 880                         data_pad = 4;
 881                         break;
 882                 case WLAN_CIPHER_SUITE_TKIP:
 883                         data_pad = 12;
 884                         break;
 885                 case WLAN_CIPHER_SUITE_CCMP:
 886                         data_pad = 8;
 887                         break;
 888                 }
 889         }
 890         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 891 }
 892
 893 /*
 894  * Packet reception for 88w8366 AP firmware.
 895  */
 896 struct mwl8k_rxd_8366_ap {
 897         __le16 pkt_len;
 898         __u8 sq2;
 899         __u8 rate;
 900         __le32 pkt_phys_addr;
 901         __le32 next_rxd_phys_addr;
 902         __le16 qos_control;
 903         __le16 htsig2;
 904         __le32 hw_rssi_info;
 905         __le32 hw_noise_floor_info;
 906         __u8 noise_floor;
 907         __u8 pad0[3];
 908         __u8 rssi;
 909         __u8 rx_status;
 910         __u8 channel;
 911         __u8 rx_ctrl;
 912 } __packed;
 913
 914 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 915 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 916 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 917
 918 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 919
 920 /* 8366 AP rx_status bits */
 921 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 922 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 923 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 924 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 925 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 926
 927 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 928 {
 929         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 930
 931         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 932         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 933 }
 934
 935 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 936 {
 937         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 938
 939         rxd->pkt_len = cpu_to_le16(len);
 940         rxd->pkt_phys_addr = cpu_to_le32(addr);
 941         wmb();
 942         rxd->rx_ctrl = 0;
 943 }
 944
 945 static int
 946 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 947                           __le16 *qos, s8 *noise)
 948 {
 949         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 950
 951         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 952                 return -1;
 953         rmb();
 954
 955         memset(status, 0, sizeof(*status));
 956
 957         status->signal = -rxd->rssi;
 958         *noise = -rxd->noise_floor;
 959
 960         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 961                 status->flag |= RX_FLAG_HT;
 962                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 963                         status->flag |= RX_FLAG_40MHZ;
 964                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 965         } else {
 966                 int i;
 967
 968                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 969                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 970                                 status->rate_idx = i;
 971                                 break;
 972                         }
 973                 }
 974         }
 975
 976         if (rxd->channel > 14) {
 977                 status->band = IEEE80211_BAND_5GHZ;
 978                 if (!(status->flag & RX_FLAG_HT))
 979                         status->rate_idx -= 5;
 980         } else {
 981                 status->band = IEEE80211_BAND_2GHZ;
 982         }
 983         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 984                                                       status->band);
 985
 986         *qos = rxd->qos_control;
 987
 988         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 989             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 990             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 991                 status->flag |= RX_FLAG_MMIC_ERROR;
 992
 993         return le16_to_cpu(rxd->pkt_len);
 994 }
 995
 996 static struct rxd_ops rxd_8366_ap_ops = {
 997         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 998         .rxd_init       = mwl8k_rxd_8366_ap_init,
 999         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1000         .rxd_process    = mwl8k_rxd_8366_ap_process,
1001 };
1002
1003 /*
1004  * Packet reception for STA firmware.
1005  */
1006 struct mwl8k_rxd_sta {
1007         __le16 pkt_len;
1008         __u8 link_quality;
1009         __u8 noise_level;
1010         __le32 pkt_phys_addr;
1011         __le32 next_rxd_phys_addr;
1012         __le16 qos_control;
1013         __le16 rate_info;
1014         __le32 pad0[4];
1015         __u8 rssi;
1016         __u8 channel;
1017         __le16 pad1;
1018         __u8 rx_ctrl;
1019         __u8 rx_status;
1020         __u8 pad2[2];
1021 } __packed;
1022
1023 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1024 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1025 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1026 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1027 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1028 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1029
1030 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1031 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1032 /* ICV=0 or MIC=1 */
1033 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1034 /* Key is uploaded only in failure case */
1035 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1036
1037 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1038 {
1039         struct mwl8k_rxd_sta *rxd = _rxd;
1040
1041         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1042         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1043 }
1044
1045 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1046 {
1047         struct mwl8k_rxd_sta *rxd = _rxd;
1048
1049         rxd->pkt_len = cpu_to_le16(len);
1050         rxd->pkt_phys_addr = cpu_to_le32(addr);
1051         wmb();
1052         rxd->rx_ctrl = 0;
1053 }
1054
1055 static int
1056 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1057                        __le16 *qos, s8 *noise)
1058 {
1059         struct mwl8k_rxd_sta *rxd = _rxd;
1060         u16 rate_info;
1061
1062         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1063                 return -1;
1064         rmb();
1065
1066         rate_info = le16_to_cpu(rxd->rate_info);
1067
1068         memset(status, 0, sizeof(*status));
1069
1070         status->signal = -rxd->rssi;
1071         *noise = -rxd->noise_level;
1072         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1073         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1074
1075         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1076                 status->flag |= RX_FLAG_SHORTPRE;
1077         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1078                 status->flag |= RX_FLAG_40MHZ;
1079         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1080                 status->flag |= RX_FLAG_SHORT_GI;
1081         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1082                 status->flag |= RX_FLAG_HT;
1083
1084         if (rxd->channel > 14) {
1085                 status->band = IEEE80211_BAND_5GHZ;
1086                 if (!(status->flag & RX_FLAG_HT))
1087                         status->rate_idx -= 5;
1088         } else {
1089                 status->band = IEEE80211_BAND_2GHZ;
1090         }
1091         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1092                                                       status->band);
1093
1094         *qos = rxd->qos_control;
1095         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1096             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1097                 status->flag |= RX_FLAG_MMIC_ERROR;
1098
1099         return le16_to_cpu(rxd->pkt_len);
1100 }
1101
1102 static struct rxd_ops rxd_sta_ops = {
1103         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1104         .rxd_init       = mwl8k_rxd_sta_init,
1105         .rxd_refill     = mwl8k_rxd_sta_refill,
1106         .rxd_process    = mwl8k_rxd_sta_process,
1107 };
1108
1109
1110 #define MWL8K_RX_DESCS          256
1111 #define MWL8K_RX_MAXSZ          3800
1112
1113 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1114 {
1115         struct mwl8k_priv *priv = hw->priv;
1116         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1117         int size;
1118         int i;
1119
1120         rxq->rxd_count = 0;
1121         rxq->head = 0;
1122         rxq->tail = 0;
1123
1124         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1125
1126         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1127         if (rxq->rxd == NULL) {
1128                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1129                 return -ENOMEM;
1130         }
1131         memset(rxq->rxd, 0, size);
1132
1133         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1134         if (rxq->buf == NULL) {
1135                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1136                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1137                 return -ENOMEM;
1138         }
1139
1140         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1141                 int desc_size;
1142                 void *rxd;
1143                 int nexti;
1144                 dma_addr_t next_dma_addr;
1145
1146                 desc_size = priv->rxd_ops->rxd_size;
1147                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1148
1149                 nexti = i + 1;
1150                 if (nexti == MWL8K_RX_DESCS)
1151                         nexti = 0;
1152                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1153
1154                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1155         }
1156
1157         return 0;
1158 }
1159
1160 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1161 {
1162         struct mwl8k_priv *priv = hw->priv;
1163         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1164         int refilled;
1165
1166         refilled = 0;
1167         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1168                 struct sk_buff *skb;
1169                 dma_addr_t addr;
1170                 int rx;
1171                 void *rxd;
1172
1173                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1174                 if (skb == NULL)
1175                         break;
1176
1177                 addr = pci_map_single(priv->pdev, skb->data,
1178                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1179
1180                 rxq->rxd_count++;
1181                 rx = rxq->tail++;
1182                 if (rxq->tail == MWL8K_RX_DESCS)
1183                         rxq->tail = 0;
1184                 rxq->buf[rx].skb = skb;
1185                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1186
1187                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1188                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1189
1190                 refilled++;
1191         }
1192
1193         return refilled;
1194 }
1195
1196 /* Must be called only when the card's reception is completely halted */
1197 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1198 {
1199         struct mwl8k_priv *priv = hw->priv;
1200         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1201         int i;
1202
1203         if (rxq->rxd == NULL)
1204                 return;
1205
1206         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1207                 if (rxq->buf[i].skb != NULL) {
1208                         pci_unmap_single(priv->pdev,
1209                                          dma_unmap_addr(&rxq->buf[i], dma),
1210                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1211                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1212
1213                         kfree_skb(rxq->buf[i].skb);
1214                         rxq->buf[i].skb = NULL;
1215                 }
1216         }
1217
1218         kfree(rxq->buf);
1219         rxq->buf = NULL;
1220
1221         pci_free_consistent(priv->pdev,
1222                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1223                             rxq->rxd, rxq->rxd_dma);
1224         rxq->rxd = NULL;
1225 }
1226
1227
1228 /*
1229  * Scan a list of BSSIDs to process for finalize join.
1230  * Allows for extension to process multiple BSSIDs.
1231  */
1232 static inline int
1233 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1234 {
1235         return priv->capture_beacon &&
1236                 ieee80211_is_beacon(wh->frame_control) &&
1237                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1238 }
1239
1240 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1241                                      struct sk_buff *skb)
1242 {
1243         struct mwl8k_priv *priv = hw->priv;
1244
1245         priv->capture_beacon = false;
1246         memset(priv->capture_bssid, 0, ETH_ALEN);
1247
1248         /*
1249          * Use GFP_ATOMIC as rxq_process is called from
1250          * the primary interrupt handler, memory allocation call
1251          * must not sleep.
1252          */
1253         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1254         if (priv->beacon_skb != NULL)
1255                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1256 }
1257
1258 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1259                                                    u8 *bssid)
1260 {
1261         struct mwl8k_vif *mwl8k_vif;
1262
1263         list_for_each_entry(mwl8k_vif,
1264                             vif_list, list) {
1265                 if (memcmp(bssid, mwl8k_vif->bssid,
1266                            ETH_ALEN) == 0)
1267                         return mwl8k_vif;
1268         }
1269
1270         return NULL;
1271 }
1272
1273 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1274 {
1275         struct mwl8k_priv *priv = hw->priv;
1276         struct mwl8k_vif *mwl8k_vif = NULL;
1277         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1278         int processed;
1279
1280         processed = 0;
1281         while (rxq->rxd_count && limit--) {
1282                 struct sk_buff *skb;
1283                 void *rxd;
1284                 int pkt_len;
1285                 struct ieee80211_rx_status status;
1286                 struct ieee80211_hdr *wh;
1287                 __le16 qos;
1288
1289                 skb = rxq->buf[rxq->head].skb;
1290                 if (skb == NULL)
1291                         break;
1292
1293                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1294
1295                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1296                                                         &priv->noise);
1297                 if (pkt_len < 0)
1298                         break;
1299
1300                 rxq->buf[rxq->head].skb = NULL;
1301
1302                 pci_unmap_single(priv->pdev,
1303                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1304                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1305                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1306
1307                 rxq->head++;
1308                 if (rxq->head == MWL8K_RX_DESCS)
1309                         rxq->head = 0;
1310
1311                 rxq->rxd_count--;
1312
1313                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1314
1315                 /*
1316                  * Check for a pending join operation.  Save a
1317                  * copy of the beacon and schedule a tasklet to
1318                  * send a FINALIZE_JOIN command to the firmware.
1319                  */
1320                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1321                         mwl8k_save_beacon(hw, skb);
1322
1323                 if (ieee80211_has_protected(wh->frame_control)) {
1324
1325                         /* Check if hw crypto has been enabled for
1326                          * this bss. If yes, set the status flags
1327                          * accordingly
1328                          */
1329                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1330                                                                 wh->addr1);
1331
1332                         if (mwl8k_vif != NULL &&
1333                             mwl8k_vif->is_hw_crypto_enabled) {
1334                                 /*
1335                                  * When MMIC ERROR is encountered
1336                                  * by the firmware, payload is
1337                                  * dropped and only 32 bytes of
1338                                  * mwl8k Firmware header is sent
1339                                  * to the host.
1340                                  *
1341                                  * We need to add four bytes of
1342                                  * key information.  In it
1343                                  * MAC80211 expects keyidx set to
1344                                  * 0 for triggering Counter
1345                                  * Measure of MMIC failure.
1346                                  */
1347                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1348                                         struct mwl8k_dma_data *tr;
1349                                         tr = (struct mwl8k_dma_data *)skb->data;
1350                                         memset((void *)&(tr->data), 0, 4);
1351                                         pkt_len += 4;
1352                                 }
1353
1354                                 if (!ieee80211_is_auth(wh->frame_control))
1355                                         status.flag |= RX_FLAG_IV_STRIPPED |
1356                                                        RX_FLAG_DECRYPTED |
1357                                                        RX_FLAG_MMIC_STRIPPED;
1358                         }
1359                 }
1360
1361                 skb_put(skb, pkt_len);
1362                 mwl8k_remove_dma_header(skb, qos);
1363                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1364                 ieee80211_rx_irqsafe(hw, skb);
1365
1366                 processed++;
1367         }
1368
1369         return processed;
1370 }
1371
1372
1373 /*
1374  * Packet transmission.
1375  */
1376
1377 #define MWL8K_TXD_STATUS_OK                     0x00000001
1378 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1379 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1380 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1381 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1382
1383 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1384 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1385 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1386 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1387 #define MWL8K_QOS_EOSP                          0x0010
1388
1389 struct mwl8k_tx_desc {
1390         __le32 status;
1391         __u8 data_rate;
1392         __u8 tx_priority;
1393         __le16 qos_control;
1394         __le32 pkt_phys_addr;
1395         __le16 pkt_len;
1396         __u8 dest_MAC_addr[ETH_ALEN];
1397         __le32 next_txd_phys_addr;
1398         __le32 timestamp;
1399         __le16 rate_info;
1400         __u8 peer_id;
1401         __u8 tx_frag_cnt;
1402 } __packed;
1403
1404 #define MWL8K_TX_DESCS          128
1405
1406 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1407 {
1408         struct mwl8k_priv *priv = hw->priv;
1409         struct mwl8k_tx_queue *txq = priv->txq + index;
1410         int size;
1411         int i;
1412
1413         txq->len = 0;
1414         txq->head = 0;
1415         txq->tail = 0;
1416
1417         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1418
1419         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1420         if (txq->txd == NULL) {
1421                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1422                 return -ENOMEM;
1423         }
1424         memset(txq->txd, 0, size);
1425
1426         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1427         if (txq->skb == NULL) {
1428                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1429                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1430                 return -ENOMEM;
1431         }
1432
1433         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1434                 struct mwl8k_tx_desc *tx_desc;
1435                 int nexti;
1436
1437                 tx_desc = txq->txd + i;
1438                 nexti = (i + 1) % MWL8K_TX_DESCS;
1439
1440                 tx_desc->status = 0;
1441                 tx_desc->next_txd_phys_addr =
1442                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1443         }
1444
1445         return 0;
1446 }
1447
1448 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1449 {
1450         iowrite32(MWL8K_H2A_INT_PPA_READY,
1451                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1452         iowrite32(MWL8K_H2A_INT_DUMMY,
1453                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1454         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1455 }
1456
1457 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1458 {
1459         struct mwl8k_priv *priv = hw->priv;
1460         int i;
1461
1462         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1463                 struct mwl8k_tx_queue *txq = priv->txq + i;
1464                 int fw_owned = 0;
1465                 int drv_owned = 0;
1466                 int unused = 0;
1467                 int desc;
1468
1469                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1470                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1471                         u32 status;
1472
1473                         status = le32_to_cpu(tx_desc->status);
1474                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1475                                 fw_owned++;
1476                         else
1477                                 drv_owned++;
1478
1479                         if (tx_desc->pkt_len == 0)
1480                                 unused++;
1481                 }
1482
1483                 wiphy_err(hw->wiphy,
1484                           "txq[%d] len=%d head=%d tail=%d "
1485                           "fw_owned=%d drv_owned=%d unused=%d\n",
1486                           i,
1487                           txq->len, txq->head, txq->tail,
1488                           fw_owned, drv_owned, unused);
1489         }
1490 }
1491
1492 /*
1493  * Must be called with priv->fw_mutex held and tx queues stopped.
1494  */
1495 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1496
1497 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1498 {
1499         struct mwl8k_priv *priv = hw->priv;
1500         DECLARE_COMPLETION_ONSTACK(tx_wait);
1501         int retry;
1502         int rc;
1503
1504         might_sleep();
1505
1506         /* Since fw restart is in progress, allow only the firmware
1507          * commands from the restart code and block the other
1508          * commands since they are going to fail in any case since
1509          * the firmware has crashed
1510          */
1511         if (priv->hw_restart_in_progress) {
1512                 if (priv->hw_restart_owner == current)
1513                         return 0;
1514                 else
1515                         return -EBUSY;
1516         }
1517
1518         /*
1519          * The TX queues are stopped at this point, so this test
1520          * doesn't need to take ->tx_lock.
1521          */
1522         if (!priv->pending_tx_pkts)
1523                 return 0;
1524
1525         retry = 0;
1526         rc = 0;
1527
1528         spin_lock_bh(&priv->tx_lock);
1529         priv->tx_wait = &tx_wait;
1530         while (!rc) {
1531                 int oldcount;
1532                 unsigned long timeout;
1533
1534                 oldcount = priv->pending_tx_pkts;
1535
1536                 spin_unlock_bh(&priv->tx_lock);
1537                 timeout = wait_for_completion_timeout(&tx_wait,
1538                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1539                 spin_lock_bh(&priv->tx_lock);
1540
1541                 if (timeout) {
1542                         WARN_ON(priv->pending_tx_pkts);
1543                         if (retry)
1544                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1545                         break;
1546                 }
1547
1548                 if (priv->pending_tx_pkts < oldcount) {
1549                         wiphy_notice(hw->wiphy,
1550                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1551                                      oldcount, priv->pending_tx_pkts);
1552                         retry = 1;
1553                         continue;
1554                 }
1555
1556                 priv->tx_wait = NULL;
1557
1558                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1559                           MWL8K_TX_WAIT_TIMEOUT_MS);
1560                 mwl8k_dump_tx_rings(hw);
1561                 priv->hw_restart_in_progress = true;
1562                 ieee80211_queue_work(hw, &priv->fw_reload);
1563
1564                 rc = -ETIMEDOUT;
1565         }
1566         spin_unlock_bh(&priv->tx_lock);
1567
1568         return rc;
1569 }
1570
1571 #define MWL8K_TXD_SUCCESS(status)                               \
1572         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1573                      MWL8K_TXD_STATUS_OK_RETRY |                \
1574                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1575
1576 static int mwl8k_tid_queue_mapping(u8 tid)
1577 {
1578         BUG_ON(tid > 7);
1579
1580         switch (tid) {
1581         case 0:
1582         case 3:
1583                 return IEEE80211_AC_BE;
1584                 break;
1585         case 1:
1586         case 2:
1587                 return IEEE80211_AC_BK;
1588                 break;
1589         case 4:
1590         case 5:
1591                 return IEEE80211_AC_VI;
1592                 break;
1593         case 6:
1594         case 7:
1595                 return IEEE80211_AC_VO;
1596                 break;
1597         default:
1598                 return -1;
1599                 break;
1600         }
1601 }
1602
1603 /* The firmware will fill in the rate information
1604  * for each packet that gets queued in the hardware
1605  * and these macros will interpret that info.
1606  */
1607
1608 #define RI_FORMAT(a)              (a & 0x0001)
1609 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1610
1611 static int
1612 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1613 {
1614         struct mwl8k_priv *priv = hw->priv;
1615         struct mwl8k_tx_queue *txq = priv->txq + index;
1616         int processed;
1617
1618         processed = 0;
1619         while (txq->len > 0 && limit--) {
1620                 int tx;
1621                 struct mwl8k_tx_desc *tx_desc;
1622                 unsigned long addr;
1623                 int size;
1624                 struct sk_buff *skb;
1625                 struct ieee80211_tx_info *info;
1626                 u32 status;
1627                 struct ieee80211_sta *sta;
1628                 struct mwl8k_sta *sta_info = NULL;
1629                 u16 rate_info;
1630                 struct ieee80211_hdr *wh;
1631
1632                 tx = txq->head;
1633                 tx_desc = txq->txd + tx;
1634
1635                 status = le32_to_cpu(tx_desc->status);
1636
1637                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1638                         if (!force)
1639                                 break;
1640                         tx_desc->status &=
1641                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1642                 }
1643
1644                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1645                 BUG_ON(txq->len == 0);
1646                 txq->len--;
1647                 priv->pending_tx_pkts--;
1648
1649                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1650                 size = le16_to_cpu(tx_desc->pkt_len);
1651                 skb = txq->skb[tx];
1652                 txq->skb[tx] = NULL;
1653
1654                 BUG_ON(skb == NULL);
1655                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1656
1657                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1658
1659                 wh = (struct ieee80211_hdr *) skb->data;
1660
1661                 /* Mark descriptor as unused */
1662                 tx_desc->pkt_phys_addr = 0;
1663                 tx_desc->pkt_len = 0;
1664
1665                 info = IEEE80211_SKB_CB(skb);
1666                 if (ieee80211_is_data(wh->frame_control)) {
1667                         rcu_read_lock();
1668                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1669                                                            wh->addr2);
1670                         if (sta) {
1671                                 sta_info = MWL8K_STA(sta);
1672                                 BUG_ON(sta_info == NULL);
1673                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1674                                 /* If rate is < 6.5 Mpbs for an ht station
1675                                  * do not form an ampdu. If the station is a
1676                                  * legacy station (format = 0), do not form an
1677                                  * ampdu
1678                                  */
1679                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1680                                     RI_FORMAT(rate_info) == 0) {
1681                                         sta_info->is_ampdu_allowed = false;
1682                                 } else {
1683                                         sta_info->is_ampdu_allowed = true;
1684                                 }
1685                         }
1686                         rcu_read_unlock();
1687                 }
1688
1689                 ieee80211_tx_info_clear_status(info);
1690
1691                 /* Rate control is happening in the firmware.
1692                  * Ensure no tx rate is being reported.
1693                  */
1694                 info->status.rates[0].idx = -1;
1695                 info->status.rates[0].count = 1;
1696
1697                 if (MWL8K_TXD_SUCCESS(status))
1698                         info->flags |= IEEE80211_TX_STAT_ACK;
1699
1700                 ieee80211_tx_status_irqsafe(hw, skb);
1701
1702                 processed++;
1703         }
1704
1705         return processed;
1706 }
1707
1708 /* must be called only when the card's transmit is completely halted */
1709 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1710 {
1711         struct mwl8k_priv *priv = hw->priv;
1712         struct mwl8k_tx_queue *txq = priv->txq + index;
1713
1714         if (txq->txd == NULL)
1715                 return;
1716
1717         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1718
1719         kfree(txq->skb);
1720         txq->skb = NULL;
1721
1722         pci_free_consistent(priv->pdev,
1723                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1724                             txq->txd, txq->txd_dma);
1725         txq->txd = NULL;
1726 }
1727
1728 /* caller must hold priv->stream_lock when calling the stream functions */
1729 static struct mwl8k_ampdu_stream *
1730 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1731 {
1732         struct mwl8k_ampdu_stream *stream;
1733         struct mwl8k_priv *priv = hw->priv;
1734         int i;
1735
1736         for (i = 0; i < priv->num_ampdu_queues; i++) {
1737                 stream = &priv->ampdu[i];
1738                 if (stream->state == AMPDU_NO_STREAM) {
1739                         stream->sta = sta;
1740                         stream->state = AMPDU_STREAM_NEW;
1741                         stream->tid = tid;
1742                         stream->idx = i;
1743                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1744                                     sta->addr, tid);
1745                         return stream;
1746                 }
1747         }
1748         return NULL;
1749 }
1750
1751 static int
1752 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1753 {
1754         int ret;
1755
1756         /* if the stream has already been started, don't start it again */
1757         if (stream->state != AMPDU_STREAM_NEW)
1758                 return 0;
1759         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1760         if (ret)
1761                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1762                             "%d\n", stream->sta->addr, stream->tid, ret);
1763         else
1764                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1765                             stream->sta->addr, stream->tid);
1766         return ret;
1767 }
1768
1769 static void
1770 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1771 {
1772         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1773                     stream->tid);
1774         memset(stream, 0, sizeof(*stream));
1775 }
1776
1777 static struct mwl8k_ampdu_stream *
1778 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1779 {
1780         struct mwl8k_priv *priv = hw->priv;
1781         int i;
1782
1783         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1784                 struct mwl8k_ampdu_stream *stream;
1785                 stream = &priv->ampdu[i];
1786                 if (stream->state == AMPDU_NO_STREAM)
1787                         continue;
1788                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1789                     stream->tid == tid)
1790                         return stream;
1791         }
1792         return NULL;
1793 }
1794
1795 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1796 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1797 {
1798         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1799         struct tx_traffic_info *tx_stats;
1800
1801         BUG_ON(tid >= MWL8K_MAX_TID);
1802         tx_stats = &sta_info->tx_stats[tid];
1803
1804         return sta_info->is_ampdu_allowed &&
1805                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1806 }
1807
1808 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1809 {
1810         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1811         struct tx_traffic_info *tx_stats;
1812
1813         BUG_ON(tid >= MWL8K_MAX_TID);
1814         tx_stats = &sta_info->tx_stats[tid];
1815
1816         if (tx_stats->start_time == 0)
1817                 tx_stats->start_time = jiffies;
1818
1819         /* reset the packet count after each second elapses.  If the number of
1820          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1821          * an ampdu stream to be started.
1822          */
1823         if (jiffies - tx_stats->start_time > HZ) {
1824                 tx_stats->pkts = 0;
1825                 tx_stats->start_time = 0;
1826         } else
1827                 tx_stats->pkts++;
1828 }
1829
1830 static void
1831 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1832                int index,
1833                struct ieee80211_sta *sta,
1834                struct sk_buff *skb)
1835 {
1836         struct mwl8k_priv *priv = hw->priv;
1837         struct ieee80211_tx_info *tx_info;
1838         struct mwl8k_vif *mwl8k_vif;
1839         struct ieee80211_hdr *wh;
1840         struct mwl8k_tx_queue *txq;
1841         struct mwl8k_tx_desc *tx;
1842         dma_addr_t dma;
1843         u32 txstatus;
1844         u8 txdatarate;
1845         u16 qos;
1846         int txpriority;
1847         u8 tid = 0;
1848         struct mwl8k_ampdu_stream *stream = NULL;
1849         bool start_ba_session = false;
1850         bool mgmtframe = false;
1851         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1852         bool eapol_frame = false;
1853
1854         wh = (struct ieee80211_hdr *)skb->data;
1855         if (ieee80211_is_data_qos(wh->frame_control))
1856                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1857         else
1858                 qos = 0;
1859
1860         if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1861                 eapol_frame = true;
1862
1863         if (ieee80211_is_mgmt(wh->frame_control))
1864                 mgmtframe = true;
1865
1866         if (priv->ap_fw)
1867                 mwl8k_encapsulate_tx_frame(priv, skb);
1868         else
1869                 mwl8k_add_dma_header(priv, skb, 0, 0);
1870
1871         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1872
1873         tx_info = IEEE80211_SKB_CB(skb);
1874         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1875
1876         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1877                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1878                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1879                 mwl8k_vif->seqno += 0x10;
1880         }
1881
1882         /* Setup firmware control bit fields for each frame type.  */
1883         txstatus = 0;
1884         txdatarate = 0;
1885         if (ieee80211_is_mgmt(wh->frame_control) ||
1886             ieee80211_is_ctl(wh->frame_control)) {
1887                 txdatarate = 0;
1888                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1889         } else if (ieee80211_is_data(wh->frame_control)) {
1890                 txdatarate = 1;
1891                 if (is_multicast_ether_addr(wh->addr1))
1892                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1893
1894                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1895                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1896                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1897                 else
1898                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1899         }
1900
1901         /* Queue ADDBA request in the respective data queue.  While setting up
1902          * the ampdu stream, mac80211 queues further packets for that
1903          * particular ra/tid pair.  However, packets piled up in the hardware
1904          * for that ra/tid pair will still go out. ADDBA request and the
1905          * related data packets going out from different queues asynchronously
1906          * will cause a shift in the receiver window which might result in
1907          * ampdu packets getting dropped at the receiver after the stream has
1908          * been setup.
1909          */
1910         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1911             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1912             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1913             priv->ap_fw)) {
1914                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1915                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1916                 index = mwl8k_tid_queue_mapping(tid);
1917         }
1918
1919         txpriority = index;
1920
1921         if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1922             ieee80211_is_data_qos(wh->frame_control)) {
1923                 tid = qos & 0xf;
1924                 mwl8k_tx_count_packet(sta, tid);
1925                 spin_lock(&priv->stream_lock);
1926                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1927                 if (stream != NULL) {
1928                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1929                                 txpriority = stream->idx + MWL8K_TX_WMM_QUEUES;
1930                                 index = stream->idx + MWL8K_TX_WMM_QUEUES;
1931                         } else if (stream->state == AMPDU_STREAM_NEW) {
1932                                 /* We get here if the driver sends us packets
1933                                  * after we've initiated a stream, but before
1934                                  * our ampdu_action routine has been called
1935                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1936                                  * for the ADDBA request.  So this packet can
1937                                  * go out with no risk of sequence number
1938                                  * mismatch.  No special handling is required.
1939                                  */
1940                         } else {
1941                                 /* Drop packets that would go out after the
1942                                  * ADDBA request was sent but before the ADDBA
1943                                  * response is received.  If we don't do this,
1944                                  * the recipient would probably receive it
1945                                  * after the ADDBA request with SSN 0.  This
1946                                  * will cause the recipient's BA receive window
1947                                  * to shift, which would cause the subsequent
1948                                  * packets in the BA stream to be discarded.
1949                                  * mac80211 queues our packets for us in this
1950                                  * case, so this is really just a safety check.
1951                                  */
1952                                 wiphy_warn(hw->wiphy,
1953                                            "Cannot send packet while ADDBA "
1954                                            "dialog is underway.\n");
1955                                 spin_unlock(&priv->stream_lock);
1956                                 dev_kfree_skb(skb);
1957                                 return;
1958                         }
1959                 } else {
1960                         /* Defer calling mwl8k_start_stream so that the current
1961                          * skb can go out before the ADDBA request.  This
1962                          * prevents sequence number mismatch at the recepient
1963                          * as described above.
1964                          */
1965                         if (mwl8k_ampdu_allowed(sta, tid)) {
1966                                 stream = mwl8k_add_stream(hw, sta, tid);
1967                                 if (stream != NULL)
1968                                         start_ba_session = true;
1969                         }
1970                 }
1971                 spin_unlock(&priv->stream_lock);
1972         }
1973
1974         dma = pci_map_single(priv->pdev, skb->data,
1975                                 skb->len, PCI_DMA_TODEVICE);
1976
1977         if (pci_dma_mapping_error(priv->pdev, dma)) {
1978                 wiphy_debug(hw->wiphy,
1979                             "failed to dma map skb, dropping TX frame.\n");
1980                 if (start_ba_session) {
1981                         spin_lock(&priv->stream_lock);
1982                         mwl8k_remove_stream(hw, stream);
1983                         spin_unlock(&priv->stream_lock);
1984                 }
1985                 dev_kfree_skb(skb);
1986                 return;
1987         }
1988
1989         spin_lock_bh(&priv->tx_lock);
1990
1991         txq = priv->txq + index;
1992
1993         /* Mgmt frames that go out frequently are probe
1994          * responses. Other mgmt frames got out relatively
1995          * infrequently. Hence reserve 2 buffers so that
1996          * other mgmt frames do not get dropped due to an
1997          * already queued probe response in one of the
1998          * reserved buffers.
1999          */
2000
2001         if (txq->len >= MWL8K_TX_DESCS - 2) {
2002                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2003                         if (start_ba_session) {
2004                                 spin_lock(&priv->stream_lock);
2005                                 mwl8k_remove_stream(hw, stream);
2006                                 spin_unlock(&priv->stream_lock);
2007                         }
2008                         spin_unlock_bh(&priv->tx_lock);
2009                         pci_unmap_single(priv->pdev, dma, skb->len,
2010                                          PCI_DMA_TODEVICE);
2011                         dev_kfree_skb(skb);
2012                         return;
2013                 }
2014         }
2015
2016         BUG_ON(txq->skb[txq->tail] != NULL);
2017         txq->skb[txq->tail] = skb;
2018
2019         tx = txq->txd + txq->tail;
2020         tx->data_rate = txdatarate;
2021         tx->tx_priority = txpriority;
2022         tx->qos_control = cpu_to_le16(qos);
2023         tx->pkt_phys_addr = cpu_to_le32(dma);
2024         tx->pkt_len = cpu_to_le16(skb->len);
2025         tx->rate_info = 0;
2026         if (!priv->ap_fw && sta != NULL)
2027                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2028         else
2029                 tx->peer_id = 0;
2030
2031         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2032                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2033                                                 MWL8K_HW_TIMER_REGISTER));
2034         else
2035                 tx->timestamp = 0;
2036
2037         wmb();
2038         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2039
2040         txq->len++;
2041         priv->pending_tx_pkts++;
2042
2043         txq->tail++;
2044         if (txq->tail == MWL8K_TX_DESCS)
2045                 txq->tail = 0;
2046
2047         mwl8k_tx_start(priv);
2048
2049         spin_unlock_bh(&priv->tx_lock);
2050
2051         /* Initiate the ampdu session here */
2052         if (start_ba_session) {
2053                 spin_lock(&priv->stream_lock);
2054                 if (mwl8k_start_stream(hw, stream))
2055                         mwl8k_remove_stream(hw, stream);
2056                 spin_unlock(&priv->stream_lock);
2057         }
2058 }
2059
2060
2061 /*
2062  * Firmware access.
2063  *
2064  * We have the following requirements for issuing firmware commands:
2065  * - Some commands require that the packet transmit path is idle when
2066  *   the command is issued.  (For simplicity, we'll just quiesce the
2067  *   transmit path for every command.)
2068  * - There are certain sequences of commands that need to be issued to
2069  *   the hardware sequentially, with no other intervening commands.
2070  *
2071  * This leads to an implementation of a "firmware lock" as a mutex that
2072  * can be taken recursively, and which is taken by both the low-level
2073  * command submission function (mwl8k_post_cmd) as well as any users of
2074  * that function that require issuing of an atomic sequence of commands,
2075  * and quiesces the transmit path whenever it's taken.
2076  */
2077 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2078 {
2079         struct mwl8k_priv *priv = hw->priv;
2080
2081         if (priv->fw_mutex_owner != current) {
2082                 int rc;
2083
2084                 mutex_lock(&priv->fw_mutex);
2085                 ieee80211_stop_queues(hw);
2086
2087                 rc = mwl8k_tx_wait_empty(hw);
2088                 if (rc) {
2089                         if (!priv->hw_restart_in_progress)
2090                                 ieee80211_wake_queues(hw);
2091
2092                         mutex_unlock(&priv->fw_mutex);
2093
2094                         return rc;
2095                 }
2096
2097                 priv->fw_mutex_owner = current;
2098         }
2099
2100         priv->fw_mutex_depth++;
2101
2102         return 0;
2103 }
2104
2105 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2106 {
2107         struct mwl8k_priv *priv = hw->priv;
2108
2109         if (!--priv->fw_mutex_depth) {
2110                 if (!priv->hw_restart_in_progress)
2111                         ieee80211_wake_queues(hw);
2112
2113                 priv->fw_mutex_owner = NULL;
2114                 mutex_unlock(&priv->fw_mutex);
2115         }
2116 }
2117
2118
2119 /*
2120  * Command processing.
2121  */
2122
2123 /* Timeout firmware commands after 10s */
2124 #define MWL8K_CMD_TIMEOUT_MS    10000
2125
2126 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2127 {
2128         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2129         struct mwl8k_priv *priv = hw->priv;
2130         void __iomem *regs = priv->regs;
2131         dma_addr_t dma_addr;
2132         unsigned int dma_size;
2133         int rc;
2134         unsigned long timeout = 0;
2135         u8 buf[32];
2136
2137         cmd->result = (__force __le16) 0xffff;
2138         dma_size = le16_to_cpu(cmd->length);
2139         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2140                                   PCI_DMA_BIDIRECTIONAL);
2141         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2142                 return -ENOMEM;
2143
2144         rc = mwl8k_fw_lock(hw);
2145         if (rc) {
2146                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2147                                                 PCI_DMA_BIDIRECTIONAL);
2148                 return rc;
2149         }
2150
2151         priv->hostcmd_wait = &cmd_wait;
2152         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2153         iowrite32(MWL8K_H2A_INT_DOORBELL,
2154                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2155         iowrite32(MWL8K_H2A_INT_DUMMY,
2156                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2157
2158         timeout = wait_for_completion_timeout(&cmd_wait,
2159                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2160
2161         priv->hostcmd_wait = NULL;
2162
2163         mwl8k_fw_unlock(hw);
2164
2165         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2166                                         PCI_DMA_BIDIRECTIONAL);
2167
2168         if (!timeout) {
2169                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2170                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2171                           MWL8K_CMD_TIMEOUT_MS);
2172                 rc = -ETIMEDOUT;
2173         } else {
2174                 int ms;
2175
2176                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2177
2178                 rc = cmd->result ? -EINVAL : 0;
2179                 if (rc)
2180                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2181                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2182                                   le16_to_cpu(cmd->result));
2183                 else if (ms > 2000)
2184                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2185                                      mwl8k_cmd_name(cmd->code,
2186                                                     buf, sizeof(buf)),
2187                                      ms);
2188         }
2189
2190         return rc;
2191 }
2192
2193 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2194                                  struct ieee80211_vif *vif,
2195                                  struct mwl8k_cmd_pkt *cmd)
2196 {
2197         if (vif != NULL)
2198                 cmd->macid = MWL8K_VIF(vif)->macid;
2199         return mwl8k_post_cmd(hw, cmd);
2200 }
2201
2202 /*
2203  * Setup code shared between STA and AP firmware images.
2204  */
2205 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2206 {
2207         struct mwl8k_priv *priv = hw->priv;
2208
2209         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2210         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2211
2212         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2213         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2214
2215         priv->band_24.band = IEEE80211_BAND_2GHZ;
2216         priv->band_24.channels = priv->channels_24;
2217         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2218         priv->band_24.bitrates = priv->rates_24;
2219         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2220
2221         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2222 }
2223
2224 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2225 {
2226         struct mwl8k_priv *priv = hw->priv;
2227
2228         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2229         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2230
2231         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2232         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2233
2234         priv->band_50.band = IEEE80211_BAND_5GHZ;
2235         priv->band_50.channels = priv->channels_50;
2236         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2237         priv->band_50.bitrates = priv->rates_50;
2238         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2239
2240         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2241 }
2242
2243 /*
2244  * CMD_GET_HW_SPEC (STA version).
2245  */
2246 struct mwl8k_cmd_get_hw_spec_sta {
2247         struct mwl8k_cmd_pkt header;
2248         __u8 hw_rev;
2249         __u8 host_interface;
2250         __le16 num_mcaddrs;
2251         __u8 perm_addr[ETH_ALEN];
2252         __le16 region_code;
2253         __le32 fw_rev;
2254         __le32 ps_cookie;
2255         __le32 caps;
2256         __u8 mcs_bitmap[16];
2257         __le32 rx_queue_ptr;
2258         __le32 num_tx_queues;
2259         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2260         __le32 caps2;
2261         __le32 num_tx_desc_per_queue;
2262         __le32 total_rxd;
2263 } __packed;
2264
2265 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2266 #define MWL8K_CAP_GREENFIELD            0x08000000
2267 #define MWL8K_CAP_AMPDU                 0x04000000
2268 #define MWL8K_CAP_RX_STBC               0x01000000
2269 #define MWL8K_CAP_TX_STBC               0x00800000
2270 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2271 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2272 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2273 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2274 #define MWL8K_CAP_DELAY_BA              0x00003000
2275 #define MWL8K_CAP_MIMO                  0x00000200
2276 #define MWL8K_CAP_40MHZ                 0x00000100
2277 #define MWL8K_CAP_BAND_MASK             0x00000007
2278 #define MWL8K_CAP_5GHZ                  0x00000004
2279 #define MWL8K_CAP_2GHZ4                 0x00000001
2280
2281 static void
2282 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2283                   struct ieee80211_supported_band *band, u32 cap)
2284 {
2285         int rx_streams;
2286         int tx_streams;
2287
2288         band->ht_cap.ht_supported = 1;
2289
2290         if (cap & MWL8K_CAP_MAX_AMSDU)
2291                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2292         if (cap & MWL8K_CAP_GREENFIELD)
2293                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2294         if (cap & MWL8K_CAP_AMPDU) {
2295                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2296                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2297                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2298         }
2299         if (cap & MWL8K_CAP_RX_STBC)
2300                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2301         if (cap & MWL8K_CAP_TX_STBC)
2302                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2303         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2304                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2305         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2306                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2307         if (cap & MWL8K_CAP_DELAY_BA)
2308                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2309         if (cap & MWL8K_CAP_40MHZ)
2310                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2311
2312         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2313         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2314
2315         band->ht_cap.mcs.rx_mask[0] = 0xff;
2316         if (rx_streams >= 2)
2317                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2318         if (rx_streams >= 3)
2319                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2320         band->ht_cap.mcs.rx_mask[4] = 0x01;
2321         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2322
2323         if (rx_streams != tx_streams) {
2324                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2325                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2326                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2327         }
2328 }
2329
2330 static void
2331 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2332 {
2333         struct mwl8k_priv *priv = hw->priv;
2334
2335         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2336                 mwl8k_setup_2ghz_band(hw);
2337                 if (caps & MWL8K_CAP_MIMO)
2338                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2339         }
2340
2341         if (caps & MWL8K_CAP_5GHZ) {
2342                 mwl8k_setup_5ghz_band(hw);
2343                 if (caps & MWL8K_CAP_MIMO)
2344                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2345         }
2346 }
2347
2348 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2349 {
2350         struct mwl8k_priv *priv = hw->priv;
2351         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2352         int rc;
2353         int i;
2354
2355         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2356         if (cmd == NULL)
2357                 return -ENOMEM;
2358
2359         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2360         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2361
2362         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2363         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2364         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2365         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2366         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2367                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2368         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2369         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2370
2371         rc = mwl8k_post_cmd(hw, &cmd->header);
2372
2373         if (!rc) {
2374                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2375                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2376                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2377                 priv->hw_rev = cmd->hw_rev;
2378                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2379                 priv->ap_macids_supported = 0x00000000;
2380                 priv->sta_macids_supported = 0x00000001;
2381         }
2382
2383         kfree(cmd);
2384         return rc;
2385 }
2386
2387 /*
2388  * CMD_GET_HW_SPEC (AP version).
2389  */
2390 struct mwl8k_cmd_get_hw_spec_ap {
2391         struct mwl8k_cmd_pkt header;
2392         __u8 hw_rev;
2393         __u8 host_interface;
2394         __le16 num_wcb;
2395         __le16 num_mcaddrs;
2396         __u8 perm_addr[ETH_ALEN];
2397         __le16 region_code;
2398         __le16 num_antenna;
2399         __le32 fw_rev;
2400         __le32 wcbbase0;
2401         __le32 rxwrptr;
2402         __le32 rxrdptr;
2403         __le32 ps_cookie;
2404         __le32 wcbbase1;
2405         __le32 wcbbase2;
2406         __le32 wcbbase3;
2407         __le32 fw_api_version;
2408         __le32 caps;
2409         __le32 num_of_ampdu_queues;
2410         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2411 } __packed;
2412
2413 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2414 {
2415         struct mwl8k_priv *priv = hw->priv;
2416         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2417         int rc, i;
2418         u32 api_version;
2419
2420         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2421         if (cmd == NULL)
2422                 return -ENOMEM;
2423
2424         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2425         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2426
2427         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2428         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2429
2430         rc = mwl8k_post_cmd(hw, &cmd->header);
2431
2432         if (!rc) {
2433                 int off;
2434
2435                 api_version = le32_to_cpu(cmd->fw_api_version);
2436                 if (priv->device_info->fw_api_ap != api_version) {
2437                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2438                                "  Expected %d got %d.\n", MWL8K_NAME,
2439                                priv->device_info->part_name,
2440                                priv->device_info->fw_api_ap,
2441                                api_version);
2442                         rc = -EINVAL;
2443                         goto done;
2444                 }
2445                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2446                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2447                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2448                 priv->hw_rev = cmd->hw_rev;
2449                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2450                 priv->ap_macids_supported = 0x000000ff;
2451                 priv->sta_macids_supported = 0x00000000;
2452                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2453                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2454                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2455                                    " but we only support %d.\n",
2456                                    priv->num_ampdu_queues,
2457                                    MWL8K_MAX_AMPDU_QUEUES);
2458                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2459                 }
2460                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2461                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2462
2463                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2464                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2465
2466                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2467                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2468                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2469                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2470
2471                 for (i = 0; i < priv->num_ampdu_queues; i++)
2472                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2473                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2474         }
2475
2476 done:
2477         kfree(cmd);
2478         return rc;
2479 }
2480
2481 /*
2482  * CMD_SET_HW_SPEC.
2483  */
2484 struct mwl8k_cmd_set_hw_spec {
2485         struct mwl8k_cmd_pkt header;
2486         __u8 hw_rev;
2487         __u8 host_interface;
2488         __le16 num_mcaddrs;
2489         __u8 perm_addr[ETH_ALEN];
2490         __le16 region_code;
2491         __le32 fw_rev;
2492         __le32 ps_cookie;
2493         __le32 caps;
2494         __le32 rx_queue_ptr;
2495         __le32 num_tx_queues;
2496         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2497         __le32 flags;
2498         __le32 num_tx_desc_per_queue;
2499         __le32 total_rxd;
2500 } __packed;
2501
2502 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2503  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2504  * the packets that are queued for more than 500ms, will be dropped in the
2505  * hardware. This helps minimizing the issues caused due to head-of-line
2506  * blocking where a slow client can hog the bandwidth and affect traffic to a
2507  * faster client.
2508  */
2509 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2510 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2511 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2512 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2513 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2514
2515 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2516 {
2517         struct mwl8k_priv *priv = hw->priv;
2518         struct mwl8k_cmd_set_hw_spec *cmd;
2519         int rc;
2520         int i;
2521
2522         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2523         if (cmd == NULL)
2524                 return -ENOMEM;
2525
2526         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2527         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2528
2529         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2530         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2531         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2532
2533         /*
2534          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2535          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2536          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2537          * priority is interpreted the right way in firmware.
2538          */
2539         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2540                 int j = mwl8k_tx_queues(priv) - 1 - i;
2541                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2542         }
2543
2544         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2545                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2546                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2547                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2548                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2549         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2550         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2551
2552         rc = mwl8k_post_cmd(hw, &cmd->header);
2553         kfree(cmd);
2554
2555         return rc;
2556 }
2557
2558 /*
2559  * CMD_MAC_MULTICAST_ADR.
2560  */
2561 struct mwl8k_cmd_mac_multicast_adr {
2562         struct mwl8k_cmd_pkt header;
2563         __le16 action;
2564         __le16 numaddr;
2565         __u8 addr[0][ETH_ALEN];
2566 };
2567
2568 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2569 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2570 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2571 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2572
2573 static struct mwl8k_cmd_pkt *
2574 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2575                               struct netdev_hw_addr_list *mc_list)
2576 {
2577         struct mwl8k_priv *priv = hw->priv;
2578         struct mwl8k_cmd_mac_multicast_adr *cmd;
2579         int size;
2580         int mc_count = 0;
2581
2582         if (mc_list)
2583                 mc_count = netdev_hw_addr_list_count(mc_list);
2584
2585         if (allmulti || mc_count > priv->num_mcaddrs) {
2586                 allmulti = 1;
2587                 mc_count = 0;
2588         }
2589
2590         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2591
2592         cmd = kzalloc(size, GFP_ATOMIC);
2593         if (cmd == NULL)
2594                 return NULL;
2595
2596         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2597         cmd->header.length = cpu_to_le16(size);
2598         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2599                                   MWL8K_ENABLE_RX_BROADCAST);
2600
2601         if (allmulti) {
2602                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2603         } else if (mc_count) {
2604                 struct netdev_hw_addr *ha;
2605                 int i = 0;
2606
2607                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2608                 cmd->numaddr = cpu_to_le16(mc_count);
2609                 netdev_hw_addr_list_for_each(ha, mc_list) {
2610                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2611                 }
2612         }
2613
2614         return &cmd->header;
2615 }
2616
2617 /*
2618  * CMD_GET_STAT.
2619  */
2620 struct mwl8k_cmd_get_stat {
2621         struct mwl8k_cmd_pkt header;
2622         __le32 stats[64];
2623 } __packed;
2624
2625 #define MWL8K_STAT_ACK_FAILURE  9
2626 #define MWL8K_STAT_RTS_FAILURE  12
2627 #define MWL8K_STAT_FCS_ERROR    24
2628 #define MWL8K_STAT_RTS_SUCCESS  11
2629
2630 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2631                               struct ieee80211_low_level_stats *stats)
2632 {
2633         struct mwl8k_cmd_get_stat *cmd;
2634         int rc;
2635
2636         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2637         if (cmd == NULL)
2638                 return -ENOMEM;
2639
2640         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2641         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2642
2643         rc = mwl8k_post_cmd(hw, &cmd->header);
2644         if (!rc) {
2645                 stats->dot11ACKFailureCount =
2646                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2647                 stats->dot11RTSFailureCount =
2648                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2649                 stats->dot11FCSErrorCount =
2650                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2651                 stats->dot11RTSSuccessCount =
2652                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2653         }
2654         kfree(cmd);
2655
2656         return rc;
2657 }
2658
2659 /*
2660  * CMD_RADIO_CONTROL.
2661  */
2662 struct mwl8k_cmd_radio_control {
2663         struct mwl8k_cmd_pkt header;
2664         __le16 action;
2665         __le16 control;
2666         __le16 radio_on;
2667 } __packed;
2668
2669 static int
2670 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2671 {
2672         struct mwl8k_priv *priv = hw->priv;
2673         struct mwl8k_cmd_radio_control *cmd;
2674         int rc;
2675
2676         if (enable == priv->radio_on && !force)
2677                 return 0;
2678
2679         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2680         if (cmd == NULL)
2681                 return -ENOMEM;
2682
2683         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2684         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2685         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2686         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2687         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2688
2689         rc = mwl8k_post_cmd(hw, &cmd->header);
2690         kfree(cmd);
2691
2692         if (!rc)
2693                 priv->radio_on = enable;
2694
2695         return rc;
2696 }
2697
2698 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2699 {
2700         return mwl8k_cmd_radio_control(hw, 0, 0);
2701 }
2702
2703 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2704 {
2705         return mwl8k_cmd_radio_control(hw, 1, 0);
2706 }
2707
2708 static int
2709 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2710 {
2711         struct mwl8k_priv *priv = hw->priv;
2712
2713         priv->radio_short_preamble = short_preamble;
2714
2715         return mwl8k_cmd_radio_control(hw, 1, 1);
2716 }
2717
2718 /*
2719  * CMD_RF_TX_POWER.
2720  */
2721 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2722
2723 struct mwl8k_cmd_rf_tx_power {
2724         struct mwl8k_cmd_pkt header;
2725         __le16 action;
2726         __le16 support_level;
2727         __le16 current_level;
2728         __le16 reserved;
2729         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2730 } __packed;
2731
2732 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2733 {
2734         struct mwl8k_cmd_rf_tx_power *cmd;
2735         int rc;
2736
2737         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2738         if (cmd == NULL)
2739                 return -ENOMEM;
2740
2741         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2742         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2743         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2744         cmd->support_level = cpu_to_le16(dBm);
2745
2746         rc = mwl8k_post_cmd(hw, &cmd->header);
2747         kfree(cmd);
2748
2749         return rc;
2750 }
2751
2752 /*
2753  * CMD_TX_POWER.
2754  */
2755 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2756
2757 struct mwl8k_cmd_tx_power {
2758         struct mwl8k_cmd_pkt header;
2759         __le16 action;
2760         __le16 band;
2761         __le16 channel;
2762         __le16 bw;
2763         __le16 sub_ch;
2764         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2765 } __packed;
2766
2767 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2768                                      struct ieee80211_conf *conf,
2769                                      unsigned short pwr)
2770 {
2771         struct ieee80211_channel *channel = conf->channel;
2772         struct mwl8k_cmd_tx_power *cmd;
2773         int rc;
2774         int i;
2775
2776         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2777         if (cmd == NULL)
2778                 return -ENOMEM;
2779
2780         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2781         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2782         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2783
2784         if (channel->band == IEEE80211_BAND_2GHZ)
2785                 cmd->band = cpu_to_le16(0x1);
2786         else if (channel->band == IEEE80211_BAND_5GHZ)
2787                 cmd->band = cpu_to_le16(0x4);
2788
2789         cmd->channel = cpu_to_le16(channel->hw_value);
2790
2791         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2792             conf->channel_type == NL80211_CHAN_HT20) {
2793                 cmd->bw = cpu_to_le16(0x2);
2794         } else {
2795                 cmd->bw = cpu_to_le16(0x4);
2796                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2797                         cmd->sub_ch = cpu_to_le16(0x3);
2798                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2799                         cmd->sub_ch = cpu_to_le16(0x1);
2800         }
2801
2802         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2803                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2804
2805         rc = mwl8k_post_cmd(hw, &cmd->header);
2806         kfree(cmd);
2807
2808         return rc;
2809 }
2810
2811 /*
2812  * CMD_RF_ANTENNA.
2813  */
2814 struct mwl8k_cmd_rf_antenna {
2815         struct mwl8k_cmd_pkt header;
2816         __le16 antenna;
2817         __le16 mode;
2818 } __packed;
2819
2820 #define MWL8K_RF_ANTENNA_RX             1
2821 #define MWL8K_RF_ANTENNA_TX             2
2822
2823 static int
2824 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2825 {
2826         struct mwl8k_cmd_rf_antenna *cmd;
2827         int rc;
2828
2829         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2830         if (cmd == NULL)
2831                 return -ENOMEM;
2832
2833         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2834         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2835         cmd->antenna = cpu_to_le16(antenna);
2836         cmd->mode = cpu_to_le16(mask);
2837
2838         rc = mwl8k_post_cmd(hw, &cmd->header);
2839         kfree(cmd);
2840
2841         return rc;
2842 }
2843
2844 /*
2845  * CMD_SET_BEACON.
2846  */
2847 struct mwl8k_cmd_set_beacon {
2848         struct mwl8k_cmd_pkt header;
2849         __le16 beacon_len;
2850         __u8 beacon[0];
2851 };
2852
2853 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2854                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2855 {
2856         struct mwl8k_cmd_set_beacon *cmd;
2857         int rc;
2858
2859         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2860         if (cmd == NULL)
2861                 return -ENOMEM;
2862
2863         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2864         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2865         cmd->beacon_len = cpu_to_le16(len);
2866         memcpy(cmd->beacon, beacon, len);
2867
2868         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2869         kfree(cmd);
2870
2871         return rc;
2872 }
2873
2874 /*
2875  * CMD_SET_PRE_SCAN.
2876  */
2877 struct mwl8k_cmd_set_pre_scan {
2878         struct mwl8k_cmd_pkt header;
2879 } __packed;
2880
2881 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2882 {
2883         struct mwl8k_cmd_set_pre_scan *cmd;
2884         int rc;
2885
2886         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2887         if (cmd == NULL)
2888                 return -ENOMEM;
2889
2890         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2891         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2892
2893         rc = mwl8k_post_cmd(hw, &cmd->header);
2894         kfree(cmd);
2895
2896         return rc;
2897 }
2898
2899 /*
2900  * CMD_SET_POST_SCAN.
2901  */
2902 struct mwl8k_cmd_set_post_scan {
2903         struct mwl8k_cmd_pkt header;
2904         __le32 isibss;
2905         __u8 bssid[ETH_ALEN];
2906 } __packed;
2907
2908 static int
2909 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2910 {
2911         struct mwl8k_cmd_set_post_scan *cmd;
2912         int rc;
2913
2914         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2915         if (cmd == NULL)
2916                 return -ENOMEM;
2917
2918         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2919         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2920         cmd->isibss = 0;
2921         memcpy(cmd->bssid, mac, ETH_ALEN);
2922
2923         rc = mwl8k_post_cmd(hw, &cmd->header);
2924         kfree(cmd);
2925
2926         return rc;
2927 }
2928
2929 /*
2930  * CMD_SET_RF_CHANNEL.
2931  */
2932 struct mwl8k_cmd_set_rf_channel {
2933         struct mwl8k_cmd_pkt header;
2934         __le16 action;
2935         __u8 current_channel;
2936         __le32 channel_flags;
2937 } __packed;
2938
2939 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2940                                     struct ieee80211_conf *conf)
2941 {
2942         struct ieee80211_channel *channel = conf->channel;
2943         struct mwl8k_cmd_set_rf_channel *cmd;
2944         int rc;
2945
2946         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2947         if (cmd == NULL)
2948                 return -ENOMEM;
2949
2950         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2951         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2952         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2953         cmd->current_channel = channel->hw_value;
2954
2955         if (channel->band == IEEE80211_BAND_2GHZ)
2956                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2957         else if (channel->band == IEEE80211_BAND_5GHZ)
2958                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2959
2960         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2961             conf->channel_type == NL80211_CHAN_HT20)
2962                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2963         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2964                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2965         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2966                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2967
2968         rc = mwl8k_post_cmd(hw, &cmd->header);
2969         kfree(cmd);
2970
2971         return rc;
2972 }
2973
2974 /*
2975  * CMD_SET_AID.
2976  */
2977 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2978 #define MWL8K_FRAME_PROT_11G                            0x07
2979 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2980 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2981
2982 struct mwl8k_cmd_update_set_aid {
2983         struct  mwl8k_cmd_pkt header;
2984         __le16  aid;
2985
2986          /* AP's MAC address (BSSID) */
2987         __u8    bssid[ETH_ALEN];
2988         __le16  protection_mode;
2989         __u8    supp_rates[14];
2990 } __packed;
2991
2992 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2993 {
2994         int i;
2995         int j;
2996
2997         /*
2998          * Clear nonstandard rates 4 and 13.
2999          */
3000         mask &= 0x1fef;
3001
3002         for (i = 0, j = 0; i < 14; i++) {
3003                 if (mask & (1 << i))
3004                         rates[j++] = mwl8k_rates_24[i].hw_value;
3005         }
3006 }
3007
3008 static int
3009 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3010                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3011 {
3012         struct mwl8k_cmd_update_set_aid *cmd;
3013         u16 prot_mode;
3014         int rc;
3015
3016         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3017         if (cmd == NULL)
3018                 return -ENOMEM;
3019
3020         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3021         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3022         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3023         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3024
3025         if (vif->bss_conf.use_cts_prot) {
3026                 prot_mode = MWL8K_FRAME_PROT_11G;
3027         } else {
3028                 switch (vif->bss_conf.ht_operation_mode &
3029                         IEEE80211_HT_OP_MODE_PROTECTION) {
3030                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3031                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3032                         break;
3033                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3034                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3035                         break;
3036                 default:
3037                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3038                         break;
3039                 }
3040         }
3041         cmd->protection_mode = cpu_to_le16(prot_mode);
3042
3043         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3044
3045         rc = mwl8k_post_cmd(hw, &cmd->header);
3046         kfree(cmd);
3047
3048         return rc;
3049 }
3050
3051 /*
3052  * CMD_SET_RATE.
3053  */
3054 struct mwl8k_cmd_set_rate {
3055         struct  mwl8k_cmd_pkt header;
3056         __u8    legacy_rates[14];
3057
3058         /* Bitmap for supported MCS codes.  */
3059         __u8    mcs_set[16];
3060         __u8    reserved[16];
3061 } __packed;
3062
3063 static int
3064 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3065                    u32 legacy_rate_mask, u8 *mcs_rates)
3066 {
3067         struct mwl8k_cmd_set_rate *cmd;
3068         int rc;
3069
3070         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3071         if (cmd == NULL)
3072                 return -ENOMEM;
3073
3074         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3075         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3076         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3077         memcpy(cmd->mcs_set, mcs_rates, 16);
3078
3079         rc = mwl8k_post_cmd(hw, &cmd->header);
3080         kfree(cmd);
3081
3082         return rc;
3083 }
3084
3085 /*
3086  * CMD_FINALIZE_JOIN.
3087  */
3088 #define MWL8K_FJ_BEACON_MAXLEN  128
3089
3090 struct mwl8k_cmd_finalize_join {
3091         struct mwl8k_cmd_pkt header;
3092         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3093         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3094 } __packed;
3095
3096 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3097                                    int framelen, int dtim)
3098 {
3099         struct mwl8k_cmd_finalize_join *cmd;
3100         struct ieee80211_mgmt *payload = frame;
3101         int payload_len;
3102         int rc;
3103
3104         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3105         if (cmd == NULL)
3106                 return -ENOMEM;
3107
3108         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3109         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3110         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3111
3112         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3113         if (payload_len < 0)
3114                 payload_len = 0;
3115         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3116                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3117
3118         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3119
3120         rc = mwl8k_post_cmd(hw, &cmd->header);
3121         kfree(cmd);
3122
3123         return rc;
3124 }
3125
3126 /*
3127  * CMD_SET_RTS_THRESHOLD.
3128  */
3129 struct mwl8k_cmd_set_rts_threshold {
3130         struct mwl8k_cmd_pkt header;
3131         __le16 action;
3132         __le16 threshold;
3133 } __packed;
3134
3135 static int
3136 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3137 {
3138         struct mwl8k_cmd_set_rts_threshold *cmd;
3139         int rc;
3140
3141         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3142         if (cmd == NULL)
3143                 return -ENOMEM;
3144
3145         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3146         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3147         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3148         cmd->threshold = cpu_to_le16(rts_thresh);
3149
3150         rc = mwl8k_post_cmd(hw, &cmd->header);
3151         kfree(cmd);
3152
3153         return rc;
3154 }
3155
3156 /*
3157  * CMD_SET_SLOT.
3158  */
3159 struct mwl8k_cmd_set_slot {
3160         struct mwl8k_cmd_pkt header;
3161         __le16 action;
3162         __u8 short_slot;
3163 } __packed;
3164
3165 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3166 {
3167         struct mwl8k_cmd_set_slot *cmd;
3168         int rc;
3169
3170         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3171         if (cmd == NULL)
3172                 return -ENOMEM;
3173
3174         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3175         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3176         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3177         cmd->short_slot = short_slot_time;
3178
3179         rc = mwl8k_post_cmd(hw, &cmd->header);
3180         kfree(cmd);
3181
3182         return rc;
3183 }
3184
3185 /*
3186  * CMD_SET_EDCA_PARAMS.
3187  */
3188 struct mwl8k_cmd_set_edca_params {
3189         struct mwl8k_cmd_pkt header;
3190
3191         /* See MWL8K_SET_EDCA_XXX below */
3192         __le16 action;
3193
3194         /* TX opportunity in units of 32 us */
3195         __le16 txop;
3196
3197         union {
3198                 struct {
3199                         /* Log exponent of max contention period: 0...15 */
3200                         __le32 log_cw_max;
3201
3202                         /* Log exponent of min contention period: 0...15 */
3203                         __le32 log_cw_min;
3204
3205                         /* Adaptive interframe spacing in units of 32us */
3206                         __u8 aifs;
3207
3208                         /* TX queue to configure */
3209                         __u8 txq;
3210                 } ap;
3211                 struct {
3212                         /* Log exponent of max contention period: 0...15 */
3213                         __u8 log_cw_max;
3214
3215                         /* Log exponent of min contention period: 0...15 */
3216                         __u8 log_cw_min;
3217
3218                         /* Adaptive interframe spacing in units of 32us */
3219                         __u8 aifs;
3220
3221                         /* TX queue to configure */
3222                         __u8 txq;
3223                 } sta;
3224         };
3225 } __packed;
3226
3227 #define MWL8K_SET_EDCA_CW       0x01
3228 #define MWL8K_SET_EDCA_TXOP     0x02
3229 #define MWL8K_SET_EDCA_AIFS     0x04
3230
3231 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3232                                  MWL8K_SET_EDCA_TXOP | \
3233                                  MWL8K_SET_EDCA_AIFS)
3234
3235 static int
3236 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3237                           __u16 cw_min, __u16 cw_max,
3238                           __u8 aifs, __u16 txop)
3239 {
3240         struct mwl8k_priv *priv = hw->priv;
3241         struct mwl8k_cmd_set_edca_params *cmd;
3242         int rc;
3243
3244         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3245         if (cmd == NULL)
3246                 return -ENOMEM;
3247
3248         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3249         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3250         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3251         cmd->txop = cpu_to_le16(txop);
3252         if (priv->ap_fw) {
3253                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3254                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3255                 cmd->ap.aifs = aifs;
3256                 cmd->ap.txq = qnum;
3257         } else {
3258                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3259                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3260                 cmd->sta.aifs = aifs;
3261                 cmd->sta.txq = qnum;
3262         }
3263
3264         rc = mwl8k_post_cmd(hw, &cmd->header);
3265         kfree(cmd);
3266
3267         return rc;
3268 }
3269
3270 /*
3271  * CMD_SET_WMM_MODE.
3272  */
3273 struct mwl8k_cmd_set_wmm_mode {
3274         struct mwl8k_cmd_pkt header;
3275         __le16 action;
3276 } __packed;
3277
3278 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3279 {
3280         struct mwl8k_priv *priv = hw->priv;
3281         struct mwl8k_cmd_set_wmm_mode *cmd;
3282         int rc;
3283
3284         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3285         if (cmd == NULL)
3286                 return -ENOMEM;
3287
3288         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3289         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3290         cmd->action = cpu_to_le16(!!enable);
3291
3292         rc = mwl8k_post_cmd(hw, &cmd->header);
3293         kfree(cmd);
3294
3295         if (!rc)
3296                 priv->wmm_enabled = enable;
3297
3298         return rc;
3299 }
3300
3301 /*
3302  * CMD_MIMO_CONFIG.
3303  */
3304 struct mwl8k_cmd_mimo_config {
3305         struct mwl8k_cmd_pkt header;
3306         __le32 action;
3307         __u8 rx_antenna_map;
3308         __u8 tx_antenna_map;
3309 } __packed;
3310
3311 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3312 {
3313         struct mwl8k_cmd_mimo_config *cmd;
3314         int rc;
3315
3316         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3317         if (cmd == NULL)
3318                 return -ENOMEM;
3319
3320         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3321         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3322         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3323         cmd->rx_antenna_map = rx;
3324         cmd->tx_antenna_map = tx;
3325
3326         rc = mwl8k_post_cmd(hw, &cmd->header);
3327         kfree(cmd);
3328
3329         return rc;
3330 }
3331
3332 /*
3333  * CMD_USE_FIXED_RATE (STA version).
3334  */
3335 struct mwl8k_cmd_use_fixed_rate_sta {
3336         struct mwl8k_cmd_pkt header;
3337         __le32 action;
3338         __le32 allow_rate_drop;
3339         __le32 num_rates;
3340         struct {
3341                 __le32 is_ht_rate;
3342                 __le32 enable_retry;
3343                 __le32 rate;
3344                 __le32 retry_count;
3345         } rate_entry[8];
3346         __le32 rate_type;
3347         __le32 reserved1;
3348         __le32 reserved2;
3349 } __packed;
3350
3351 #define MWL8K_USE_AUTO_RATE     0x0002
3352 #define MWL8K_UCAST_RATE        0
3353
3354 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3355 {
3356         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3357         int rc;
3358
3359         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3360         if (cmd == NULL)
3361                 return -ENOMEM;
3362
3363         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3364         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3365         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3366         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3367
3368         rc = mwl8k_post_cmd(hw, &cmd->header);
3369         kfree(cmd);
3370
3371         return rc;
3372 }
3373
3374 /*
3375  * CMD_USE_FIXED_RATE (AP version).
3376  */
3377 struct mwl8k_cmd_use_fixed_rate_ap {
3378         struct mwl8k_cmd_pkt header;
3379         __le32 action;
3380         __le32 allow_rate_drop;
3381         __le32 num_rates;
3382         struct mwl8k_rate_entry_ap {
3383                 __le32 is_ht_rate;
3384                 __le32 enable_retry;
3385                 __le32 rate;
3386                 __le32 retry_count;
3387         } rate_entry[4];
3388         u8 multicast_rate;
3389         u8 multicast_rate_type;
3390         u8 management_rate;
3391 } __packed;
3392
3393 static int
3394 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3395 {
3396         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3397         int rc;
3398
3399         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3400         if (cmd == NULL)
3401                 return -ENOMEM;
3402
3403         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3404         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3405         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3406         cmd->multicast_rate = mcast;
3407         cmd->management_rate = mgmt;
3408
3409         rc = mwl8k_post_cmd(hw, &cmd->header);
3410         kfree(cmd);
3411
3412         return rc;
3413 }
3414
3415 /*
3416  * CMD_ENABLE_SNIFFER.
3417  */
3418 struct mwl8k_cmd_enable_sniffer {
3419         struct mwl8k_cmd_pkt header;
3420         __le32 action;
3421 } __packed;
3422
3423 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3424 {
3425         struct mwl8k_cmd_enable_sniffer *cmd;
3426         int rc;
3427
3428         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3429         if (cmd == NULL)
3430                 return -ENOMEM;
3431
3432         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3433         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3434         cmd->action = cpu_to_le32(!!enable);
3435
3436         rc = mwl8k_post_cmd(hw, &cmd->header);
3437         kfree(cmd);
3438
3439         return rc;
3440 }
3441
3442 struct mwl8k_cmd_update_mac_addr {
3443         struct mwl8k_cmd_pkt header;
3444         union {
3445                 struct {
3446                         __le16 mac_type;
3447                         __u8 mac_addr[ETH_ALEN];
3448                 } mbss;
3449                 __u8 mac_addr[ETH_ALEN];
3450         };
3451 } __packed;
3452
3453 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3454 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3455 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3456 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3457
3458 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3459                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3460 {
3461         struct mwl8k_priv *priv = hw->priv;
3462         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3463         struct mwl8k_cmd_update_mac_addr *cmd;
3464         int mac_type;
3465         int rc;
3466
3467         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3468         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3469                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3470                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3471                 else
3472                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3473         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3474                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3475                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3476                 else
3477                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3478         }
3479
3480         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3481         if (cmd == NULL)
3482                 return -ENOMEM;
3483
3484         if (set)
3485                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3486         else
3487                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3488
3489         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3490         if (priv->ap_fw) {
3491                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3492                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3493         } else {
3494                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3495         }
3496
3497         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3498         kfree(cmd);
3499
3500         return rc;
3501 }
3502
3503 /*
3504  * MWL8K_CMD_SET_MAC_ADDR.
3505  */
3506 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3507                                   struct ieee80211_vif *vif, u8 *mac)
3508 {
3509         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3510 }
3511
3512 /*
3513  * MWL8K_CMD_DEL_MAC_ADDR.
3514  */
3515 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3516                                   struct ieee80211_vif *vif, u8 *mac)
3517 {
3518         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3519 }
3520
3521 /*
3522  * CMD_SET_RATEADAPT_MODE.
3523  */
3524 struct mwl8k_cmd_set_rate_adapt_mode {
3525         struct mwl8k_cmd_pkt header;
3526         __le16 action;
3527         __le16 mode;
3528 } __packed;
3529
3530 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3531 {
3532         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3533         int rc;
3534
3535         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3536         if (cmd == NULL)
3537                 return -ENOMEM;
3538
3539         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3540         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3541         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3542         cmd->mode = cpu_to_le16(mode);
3543
3544         rc = mwl8k_post_cmd(hw, &cmd->header);
3545         kfree(cmd);
3546
3547         return rc;
3548 }
3549
3550 /*
3551  * CMD_GET_WATCHDOG_BITMAP.
3552  */
3553 struct mwl8k_cmd_get_watchdog_bitmap {
3554         struct mwl8k_cmd_pkt header;
3555         u8      bitmap;
3556 } __packed;
3557
3558 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3559 {
3560         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3561         int rc;
3562
3563         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3564         if (cmd == NULL)
3565                 return -ENOMEM;
3566
3567         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3568         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3569
3570         rc = mwl8k_post_cmd(hw, &cmd->header);
3571         if (!rc)
3572                 *bitmap = cmd->bitmap;
3573
3574         kfree(cmd);
3575
3576         return rc;
3577 }
3578
3579 #define INVALID_BA      0xAA
3580 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3581 {
3582         int rc;
3583         u8 bitmap = 0, stream_index;
3584         struct mwl8k_ampdu_stream *streams;
3585         struct mwl8k_priv *priv =
3586                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3587
3588         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3589         if (rc)
3590                 return;
3591
3592         if (bitmap == INVALID_BA)
3593                 return;
3594
3595         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3596         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3597
3598         BUG_ON(stream_index >= priv->num_ampdu_queues);
3599
3600         streams = &priv->ampdu[stream_index];
3601
3602         if (streams->state == AMPDU_STREAM_ACTIVE)
3603                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3604
3605         return;
3606 }
3607
3608
3609 /*
3610  * CMD_BSS_START.
3611  */
3612 struct mwl8k_cmd_bss_start {
3613         struct mwl8k_cmd_pkt header;
3614         __le32 enable;
3615 } __packed;
3616
3617 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3618                                struct ieee80211_vif *vif, int enable)
3619 {
3620         struct mwl8k_cmd_bss_start *cmd;
3621         int rc;
3622
3623         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3624         if (cmd == NULL)
3625                 return -ENOMEM;
3626
3627         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3628         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3629         cmd->enable = cpu_to_le32(enable);
3630
3631         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3632         kfree(cmd);
3633
3634         return rc;
3635 }
3636
3637 /*
3638  * CMD_BASTREAM.
3639  */
3640
3641 /*
3642  * UPSTREAM is tx direction
3643  */
3644 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3645 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3646
3647 enum ba_stream_action_type {
3648         MWL8K_BA_CREATE,
3649         MWL8K_BA_UPDATE,
3650         MWL8K_BA_DESTROY,
3651         MWL8K_BA_FLUSH,
3652         MWL8K_BA_CHECK,
3653 };
3654
3655
3656 struct mwl8k_create_ba_stream {
3657         __le32  flags;
3658         __le32  idle_thrs;
3659         __le32  bar_thrs;
3660         __le32  window_size;
3661         u8      peer_mac_addr[6];
3662         u8      dialog_token;
3663         u8      tid;
3664         u8      queue_id;
3665         u8      param_info;
3666         __le32  ba_context;
3667         u8      reset_seq_no_flag;
3668         __le16  curr_seq_no;
3669         u8      sta_src_mac_addr[6];
3670 } __packed;
3671
3672 struct mwl8k_destroy_ba_stream {
3673         __le32  flags;
3674         __le32  ba_context;
3675 } __packed;
3676
3677 struct mwl8k_cmd_bastream {
3678         struct mwl8k_cmd_pkt    header;
3679         __le32  action;
3680         union {
3681                 struct mwl8k_create_ba_stream   create_params;
3682                 struct mwl8k_destroy_ba_stream  destroy_params;
3683         };
3684 } __packed;
3685
3686 static int
3687 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3688                struct ieee80211_vif *vif)
3689 {
3690         struct mwl8k_cmd_bastream *cmd;
3691         int rc;
3692
3693         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3694         if (cmd == NULL)
3695                 return -ENOMEM;
3696
3697         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3698         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3699
3700         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3701
3702         cmd->create_params.queue_id = stream->idx;
3703         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3704                ETH_ALEN);
3705         cmd->create_params.tid = stream->tid;
3706
3707         cmd->create_params.flags =
3708                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3709                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3710
3711         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3712
3713         kfree(cmd);
3714
3715         return rc;
3716 }
3717
3718 static int
3719 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3720                 u8 buf_size, struct ieee80211_vif *vif)
3721 {
3722         struct mwl8k_cmd_bastream *cmd;
3723         int rc;
3724
3725         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3726         if (cmd == NULL)
3727                 return -ENOMEM;
3728
3729
3730         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3731         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3732
3733         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3734
3735         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3736         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3737         cmd->create_params.queue_id = stream->idx;
3738
3739         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3740         cmd->create_params.tid = stream->tid;
3741         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3742         cmd->create_params.reset_seq_no_flag = 1;
3743
3744         cmd->create_params.param_info =
3745                 (stream->sta->ht_cap.ampdu_factor &
3746                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3747                 ((stream->sta->ht_cap.ampdu_density << 2) &
3748                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3749
3750         cmd->create_params.flags =
3751                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3752                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3753
3754         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3755
3756         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3757                 stream->sta->addr, stream->tid);
3758         kfree(cmd);
3759
3760         return rc;
3761 }
3762
3763 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3764                              struct mwl8k_ampdu_stream *stream)
3765 {
3766         struct mwl8k_cmd_bastream *cmd;
3767
3768         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3769         if (cmd == NULL)
3770                 return;
3771
3772         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3773         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3774         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3775
3776         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3777         mwl8k_post_cmd(hw, &cmd->header);
3778
3779         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3780
3781         kfree(cmd);
3782 }
3783
3784 /*
3785  * CMD_SET_NEW_STN.
3786  */
3787 struct mwl8k_cmd_set_new_stn {
3788         struct mwl8k_cmd_pkt header;
3789         __le16 aid;
3790         __u8 mac_addr[6];
3791         __le16 stn_id;
3792         __le16 action;
3793         __le16 rsvd;
3794         __le32 legacy_rates;
3795         __u8 ht_rates[4];
3796         __le16 cap_info;
3797         __le16 ht_capabilities_info;
3798         __u8 mac_ht_param_info;
3799         __u8 rev;
3800         __u8 control_channel;
3801         __u8 add_channel;
3802         __le16 op_mode;
3803         __le16 stbc;
3804         __u8 add_qos_info;
3805         __u8 is_qos_sta;
3806         __le32 fw_sta_ptr;
3807 } __packed;
3808
3809 #define MWL8K_STA_ACTION_ADD            0
3810 #define MWL8K_STA_ACTION_REMOVE         2
3811
3812 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3813                                      struct ieee80211_vif *vif,
3814                                      struct ieee80211_sta *sta)
3815 {
3816         struct mwl8k_cmd_set_new_stn *cmd;
3817         u32 rates;
3818         int rc;
3819
3820         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3821         if (cmd == NULL)
3822                 return -ENOMEM;
3823
3824         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3825         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3826         cmd->aid = cpu_to_le16(sta->aid);
3827         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3828         cmd->stn_id = cpu_to_le16(sta->aid);
3829         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3830         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3831                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3832         else
3833                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3834         cmd->legacy_rates = cpu_to_le32(rates);
3835         if (sta->ht_cap.ht_supported) {
3836                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3837                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3838                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3839                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3840                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3841                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3842                         ((sta->ht_cap.ampdu_density & 7) << 2);
3843                 cmd->is_qos_sta = 1;
3844         }
3845
3846         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3847         kfree(cmd);
3848
3849         return rc;
3850 }
3851
3852 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3853                                           struct ieee80211_vif *vif)
3854 {
3855         struct mwl8k_cmd_set_new_stn *cmd;
3856         int rc;
3857
3858         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3859         if (cmd == NULL)
3860                 return -ENOMEM;
3861
3862         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3863         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3864         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3865
3866         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3867         kfree(cmd);
3868
3869         return rc;
3870 }
3871
3872 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3873                                      struct ieee80211_vif *vif, u8 *addr)
3874 {
3875         struct mwl8k_cmd_set_new_stn *cmd;
3876         int rc;
3877
3878         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3879         if (cmd == NULL)
3880                 return -ENOMEM;
3881
3882         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3883         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3884         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3885         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3886
3887         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3888         kfree(cmd);
3889
3890         return rc;
3891 }
3892
3893 /*
3894  * CMD_UPDATE_ENCRYPTION.
3895  */
3896
3897 #define MAX_ENCR_KEY_LENGTH     16
3898 #define MIC_KEY_LENGTH          8
3899
3900 struct mwl8k_cmd_update_encryption {
3901         struct mwl8k_cmd_pkt header;
3902
3903         __le32 action;
3904         __le32 reserved;
3905         __u8 mac_addr[6];
3906         __u8 encr_type;
3907
3908 } __packed;
3909
3910 struct mwl8k_cmd_set_key {
3911         struct mwl8k_cmd_pkt header;
3912
3913         __le32 action;
3914         __le32 reserved;
3915         __le16 length;
3916         __le16 key_type_id;
3917         __le32 key_info;
3918         __le32 key_id;
3919         __le16 key_len;
3920         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3921         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3922         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3923         __le16 tkip_rsc_low;
3924         __le32 tkip_rsc_high;
3925         __le16 tkip_tsc_low;
3926         __le32 tkip_tsc_high;
3927         __u8 mac_addr[6];
3928 } __packed;
3929
3930 enum {
3931         MWL8K_ENCR_ENABLE,
3932         MWL8K_ENCR_SET_KEY,
3933         MWL8K_ENCR_REMOVE_KEY,
3934         MWL8K_ENCR_SET_GROUP_KEY,
3935 };
3936
3937 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3938 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3939 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3940 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3941 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3942
3943 enum {
3944         MWL8K_ALG_WEP,
3945         MWL8K_ALG_TKIP,
3946         MWL8K_ALG_CCMP,
3947 };
3948
3949 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3950 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3951 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3952 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3953 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3954
3955 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3956                                               struct ieee80211_vif *vif,
3957                                               u8 *addr,
3958                                               u8 encr_type)
3959 {
3960         struct mwl8k_cmd_update_encryption *cmd;
3961         int rc;
3962
3963         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3964         if (cmd == NULL)
3965                 return -ENOMEM;
3966
3967         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3968         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3969         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3970         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3971         cmd->encr_type = encr_type;
3972
3973         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3974         kfree(cmd);
3975
3976         return rc;
3977 }
3978
3979 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3980                                                 u8 *addr,
3981                                                 struct ieee80211_key_conf *key)
3982 {
3983         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3984         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3985         cmd->length = cpu_to_le16(sizeof(*cmd) -
3986                                 offsetof(struct mwl8k_cmd_set_key, length));
3987         cmd->key_id = cpu_to_le32(key->keyidx);
3988         cmd->key_len = cpu_to_le16(key->keylen);
3989         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3990
3991         switch (key->cipher) {
3992         case WLAN_CIPHER_SUITE_WEP40:
3993         case WLAN_CIPHER_SUITE_WEP104:
3994                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3995                 if (key->keyidx == 0)
3996                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3997
3998                 break;
3999         case WLAN_CIPHER_SUITE_TKIP:
4000                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4001                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4002                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4003                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4004                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4005                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4006                 break;
4007         case WLAN_CIPHER_SUITE_CCMP:
4008                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4009                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4010                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4011                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4012                 break;
4013         default:
4014                 return -ENOTSUPP;
4015         }
4016
4017         return 0;
4018 }
4019
4020 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4021                                                 struct ieee80211_vif *vif,
4022                                                 u8 *addr,
4023                                                 struct ieee80211_key_conf *key)
4024 {
4025         struct mwl8k_cmd_set_key *cmd;
4026         int rc;
4027         int keymlen;
4028         u32 action;
4029         u8 idx;
4030         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4031
4032         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4033         if (cmd == NULL)
4034                 return -ENOMEM;
4035
4036         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4037         if (rc < 0)
4038                 goto done;
4039
4040         idx = key->keyidx;
4041
4042         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4043                 action = MWL8K_ENCR_SET_KEY;
4044         else
4045                 action = MWL8K_ENCR_SET_GROUP_KEY;
4046
4047         switch (key->cipher) {
4048         case WLAN_CIPHER_SUITE_WEP40:
4049         case WLAN_CIPHER_SUITE_WEP104:
4050                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4051                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4052                                                 sizeof(*key) + key->keylen);
4053                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4054                 }
4055
4056                 keymlen = key->keylen;
4057                 action = MWL8K_ENCR_SET_KEY;
4058                 break;
4059         case WLAN_CIPHER_SUITE_TKIP:
4060                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4061                 break;
4062         case WLAN_CIPHER_SUITE_CCMP:
4063                 keymlen = key->keylen;
4064                 break;
4065         default:
4066                 rc = -ENOTSUPP;
4067                 goto done;
4068         }
4069
4070         memcpy(cmd->key_material, key->key, keymlen);
4071         cmd->action = cpu_to_le32(action);
4072
4073         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4074 done:
4075         kfree(cmd);
4076
4077         return rc;
4078 }
4079
4080 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4081                                                 struct ieee80211_vif *vif,
4082                                                 u8 *addr,
4083                                                 struct ieee80211_key_conf *key)
4084 {
4085         struct mwl8k_cmd_set_key *cmd;
4086         int rc;
4087         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4088
4089         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4090         if (cmd == NULL)
4091                 return -ENOMEM;
4092
4093         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4094         if (rc < 0)
4095                 goto done;
4096
4097         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4098                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4099                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4100
4101         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4102
4103         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4104 done:
4105         kfree(cmd);
4106
4107         return rc;
4108 }
4109
4110 static int mwl8k_set_key(struct ieee80211_hw *hw,
4111                          enum set_key_cmd cmd_param,
4112                          struct ieee80211_vif *vif,
4113                          struct ieee80211_sta *sta,
4114                          struct ieee80211_key_conf *key)
4115 {
4116         int rc = 0;
4117         u8 encr_type;
4118         u8 *addr;
4119         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4120
4121         if (vif->type == NL80211_IFTYPE_STATION)
4122                 return -EOPNOTSUPP;
4123
4124         if (sta == NULL)
4125                 addr = vif->addr;
4126         else
4127                 addr = sta->addr;
4128
4129         if (cmd_param == SET_KEY) {
4130                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4131                 if (rc)
4132                         goto out;
4133
4134                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4135                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4136                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4137                 else
4138                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4139
4140                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4141                                                                 encr_type);
4142                 if (rc)
4143                         goto out;
4144
4145                 mwl8k_vif->is_hw_crypto_enabled = true;
4146
4147         } else {
4148                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4149
4150                 if (rc)
4151                         goto out;
4152         }
4153 out:
4154         return rc;
4155 }
4156
4157 /*
4158  * CMD_UPDATE_STADB.
4159  */
4160 struct ewc_ht_info {
4161         __le16  control1;
4162         __le16  control2;
4163         __le16  control3;
4164 } __packed;
4165
4166 struct peer_capability_info {
4167         /* Peer type - AP vs. STA.  */
4168         __u8    peer_type;
4169
4170         /* Basic 802.11 capabilities from assoc resp.  */
4171         __le16  basic_caps;
4172
4173         /* Set if peer supports 802.11n high throughput (HT).  */
4174         __u8    ht_support;
4175
4176         /* Valid if HT is supported.  */
4177         __le16  ht_caps;
4178         __u8    extended_ht_caps;
4179         struct ewc_ht_info      ewc_info;
4180
4181         /* Legacy rate table. Intersection of our rates and peer rates.  */
4182         __u8    legacy_rates[12];
4183
4184         /* HT rate table. Intersection of our rates and peer rates.  */
4185         __u8    ht_rates[16];
4186         __u8    pad[16];
4187
4188         /* If set, interoperability mode, no proprietary extensions.  */
4189         __u8    interop;
4190         __u8    pad2;
4191         __u8    station_id;
4192         __le16  amsdu_enabled;
4193 } __packed;
4194
4195 struct mwl8k_cmd_update_stadb {
4196         struct mwl8k_cmd_pkt header;
4197
4198         /* See STADB_ACTION_TYPE */
4199         __le32  action;
4200
4201         /* Peer MAC address */
4202         __u8    peer_addr[ETH_ALEN];
4203
4204         __le32  reserved;
4205
4206         /* Peer info - valid during add/update.  */
4207         struct peer_capability_info     peer_info;
4208 } __packed;
4209
4210 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4211 #define MWL8K_STA_DB_DEL_ENTRY          2
4212
4213 /* Peer Entry flags - used to define the type of the peer node */
4214 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4215
4216 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4217                                       struct ieee80211_vif *vif,
4218                                       struct ieee80211_sta *sta)
4219 {
4220         struct mwl8k_cmd_update_stadb *cmd;
4221         struct peer_capability_info *p;
4222         u32 rates;
4223         int rc;
4224
4225         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4226         if (cmd == NULL)
4227                 return -ENOMEM;
4228
4229         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4230         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4231         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4232         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4233
4234         p = &cmd->peer_info;
4235         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4236         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4237         p->ht_support = sta->ht_cap.ht_supported;
4238         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4239         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4240                 ((sta->ht_cap.ampdu_density & 7) << 2);
4241         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4242                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4243         else
4244                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4245         legacy_rate_mask_to_array(p->legacy_rates, rates);
4246         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4247         p->interop = 1;
4248         p->amsdu_enabled = 0;
4249
4250         rc = mwl8k_post_cmd(hw, &cmd->header);
4251         kfree(cmd);
4252
4253         return rc ? rc : p->station_id;
4254 }
4255
4256 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4257                                       struct ieee80211_vif *vif, u8 *addr)
4258 {
4259         struct mwl8k_cmd_update_stadb *cmd;
4260         int rc;
4261
4262         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4263         if (cmd == NULL)
4264                 return -ENOMEM;
4265
4266         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4267         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4268         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4269         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4270
4271         rc = mwl8k_post_cmd(hw, &cmd->header);
4272         kfree(cmd);
4273
4274         return rc;
4275 }
4276
4277
4278 /*
4279  * Interrupt handling.
4280  */
4281 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4282 {
4283         struct ieee80211_hw *hw = dev_id;
4284         struct mwl8k_priv *priv = hw->priv;
4285         u32 status;
4286
4287         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4288         if (!status)
4289                 return IRQ_NONE;
4290
4291         if (status & MWL8K_A2H_INT_TX_DONE) {
4292                 status &= ~MWL8K_A2H_INT_TX_DONE;
4293                 tasklet_schedule(&priv->poll_tx_task);
4294         }
4295
4296         if (status & MWL8K_A2H_INT_RX_READY) {
4297                 status &= ~MWL8K_A2H_INT_RX_READY;
4298                 tasklet_schedule(&priv->poll_rx_task);
4299         }
4300
4301         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4302                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4303                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4304         }
4305
4306         if (status)
4307                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4308
4309         if (status & MWL8K_A2H_INT_OPC_DONE) {
4310                 if (priv->hostcmd_wait != NULL)
4311                         complete(priv->hostcmd_wait);
4312         }
4313
4314         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4315                 if (!mutex_is_locked(&priv->fw_mutex) &&
4316                     priv->radio_on && priv->pending_tx_pkts)
4317                         mwl8k_tx_start(priv);
4318         }
4319
4320         return IRQ_HANDLED;
4321 }
4322
4323 static void mwl8k_tx_poll(unsigned long data)
4324 {
4325         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4326         struct mwl8k_priv *priv = hw->priv;
4327         int limit;
4328         int i;
4329
4330         limit = 32;
4331
4332         spin_lock_bh(&priv->tx_lock);
4333
4334         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4335                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4336
4337         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4338                 complete(priv->tx_wait);
4339                 priv->tx_wait = NULL;
4340         }
4341
4342         spin_unlock_bh(&priv->tx_lock);
4343
4344         if (limit) {
4345                 writel(~MWL8K_A2H_INT_TX_DONE,
4346                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4347         } else {
4348                 tasklet_schedule(&priv->poll_tx_task);
4349         }
4350 }
4351
4352 static void mwl8k_rx_poll(unsigned long data)
4353 {
4354         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4355         struct mwl8k_priv *priv = hw->priv;
4356         int limit;
4357
4358         limit = 32;
4359         limit -= rxq_process(hw, 0, limit);
4360         limit -= rxq_refill(hw, 0, limit);
4361
4362         if (limit) {
4363                 writel(~MWL8K_A2H_INT_RX_READY,
4364                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4365         } else {
4366                 tasklet_schedule(&priv->poll_rx_task);
4367         }
4368 }
4369
4370
4371 /*
4372  * Core driver operations.
4373  */
4374 static void mwl8k_tx(struct ieee80211_hw *hw,
4375                      struct ieee80211_tx_control *control,
4376                      struct sk_buff *skb)
4377 {
4378         struct mwl8k_priv *priv = hw->priv;
4379         int index = skb_get_queue_mapping(skb);
4380
4381         if (!priv->radio_on) {
4382                 wiphy_debug(hw->wiphy,
4383                             "dropped TX frame since radio disabled\n");
4384                 dev_kfree_skb(skb);
4385                 return;
4386         }
4387
4388         mwl8k_txq_xmit(hw, index, control->sta, skb);
4389 }
4390
4391 static int mwl8k_start(struct ieee80211_hw *hw)
4392 {
4393         struct mwl8k_priv *priv = hw->priv;
4394         int rc;
4395
4396         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4397                          IRQF_SHARED, MWL8K_NAME, hw);
4398         if (rc) {
4399                 priv->irq = -1;
4400                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4401                 return -EIO;
4402         }
4403         priv->irq = priv->pdev->irq;
4404
4405         /* Enable TX reclaim and RX tasklets.  */
4406         tasklet_enable(&priv->poll_tx_task);
4407         tasklet_enable(&priv->poll_rx_task);
4408
4409         /* Enable interrupts */
4410         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4411         iowrite32(MWL8K_A2H_EVENTS,
4412                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4413
4414         rc = mwl8k_fw_lock(hw);
4415         if (!rc) {
4416                 rc = mwl8k_cmd_radio_enable(hw);
4417
4418                 if (!priv->ap_fw) {
4419                         if (!rc)
4420                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4421
4422                         if (!rc)
4423                                 rc = mwl8k_cmd_set_pre_scan(hw);
4424
4425                         if (!rc)
4426                                 rc = mwl8k_cmd_set_post_scan(hw,
4427                                                 "\x00\x00\x00\x00\x00\x00");
4428                 }
4429
4430                 if (!rc)
4431                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4432
4433                 if (!rc)
4434                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4435
4436                 mwl8k_fw_unlock(hw);
4437         }
4438
4439         if (rc) {
4440                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4441                 free_irq(priv->pdev->irq, hw);
4442                 priv->irq = -1;
4443                 tasklet_disable(&priv->poll_tx_task);
4444                 tasklet_disable(&priv->poll_rx_task);
4445         }
4446
4447         return rc;
4448 }
4449
4450 static void mwl8k_stop(struct ieee80211_hw *hw)
4451 {
4452         struct mwl8k_priv *priv = hw->priv;
4453         int i;
4454
4455         if (!priv->hw_restart_in_progress)
4456                 mwl8k_cmd_radio_disable(hw);
4457
4458         ieee80211_stop_queues(hw);
4459
4460         /* Disable interrupts */
4461         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4462         if (priv->irq != -1) {
4463                 free_irq(priv->pdev->irq, hw);
4464                 priv->irq = -1;
4465         }
4466
4467         /* Stop finalize join worker */
4468         cancel_work_sync(&priv->finalize_join_worker);
4469         cancel_work_sync(&priv->watchdog_ba_handle);
4470         if (priv->beacon_skb != NULL)
4471                 dev_kfree_skb(priv->beacon_skb);
4472
4473         /* Stop TX reclaim and RX tasklets.  */
4474         tasklet_disable(&priv->poll_tx_task);
4475         tasklet_disable(&priv->poll_rx_task);
4476
4477         /* Return all skbs to mac80211 */
4478         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4479                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4480 }
4481
4482 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4483
4484 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4485                                struct ieee80211_vif *vif)
4486 {
4487         struct mwl8k_priv *priv = hw->priv;
4488         struct mwl8k_vif *mwl8k_vif;
4489         u32 macids_supported;
4490         int macid, rc;
4491         struct mwl8k_device_info *di;
4492
4493         /*
4494          * Reject interface creation if sniffer mode is active, as
4495          * STA operation is mutually exclusive with hardware sniffer
4496          * mode.  (Sniffer mode is only used on STA firmware.)
4497          */
4498         if (priv->sniffer_enabled) {
4499                 wiphy_info(hw->wiphy,
4500                            "unable to create STA interface because sniffer mode is enabled\n");
4501                 return -EINVAL;
4502         }
4503
4504         di = priv->device_info;
4505         switch (vif->type) {
4506         case NL80211_IFTYPE_AP:
4507                 if (!priv->ap_fw && di->fw_image_ap) {
4508                         /* we must load the ap fw to meet this request */
4509                         if (!list_empty(&priv->vif_list))
4510                                 return -EBUSY;
4511                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4512                         if (rc)
4513                                 return rc;
4514                 }
4515                 macids_supported = priv->ap_macids_supported;
4516                 break;
4517         case NL80211_IFTYPE_STATION:
4518                 if (priv->ap_fw && di->fw_image_sta) {
4519                         /* we must load the sta fw to meet this request */
4520                         if (!list_empty(&priv->vif_list))
4521                                 return -EBUSY;
4522                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4523                         if (rc)
4524                                 return rc;
4525                 }
4526                 macids_supported = priv->sta_macids_supported;
4527                 break;
4528         default:
4529                 return -EINVAL;
4530         }
4531
4532         macid = ffs(macids_supported & ~priv->macids_used);
4533         if (!macid--)
4534                 return -EBUSY;
4535
4536         /* Setup driver private area. */
4537         mwl8k_vif = MWL8K_VIF(vif);
4538         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4539         mwl8k_vif->vif = vif;
4540         mwl8k_vif->macid = macid;
4541         mwl8k_vif->seqno = 0;
4542         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4543         mwl8k_vif->is_hw_crypto_enabled = false;
4544
4545         /* Set the mac address.  */
4546         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4547
4548         if (priv->ap_fw)
4549                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4550
4551         priv->macids_used |= 1 << mwl8k_vif->macid;
4552         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4553
4554         return 0;
4555 }
4556
4557 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4558 {
4559         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4560         if (!priv->macids_used)
4561                 return;
4562
4563         priv->macids_used &= ~(1 << vif->macid);
4564         list_del(&vif->list);
4565 }
4566
4567 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4568                                    struct ieee80211_vif *vif)
4569 {
4570         struct mwl8k_priv *priv = hw->priv;
4571         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4572
4573         if (priv->ap_fw)
4574                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4575
4576         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4577
4578         mwl8k_remove_vif(priv, mwl8k_vif);
4579 }
4580
4581 static void mwl8k_hw_restart_work(struct work_struct *work)
4582 {
4583         struct mwl8k_priv *priv =
4584                 container_of(work, struct mwl8k_priv, fw_reload);
4585         struct ieee80211_hw *hw = priv->hw;
4586         struct mwl8k_device_info *di;
4587         int rc;
4588
4589         /* If some command is waiting for a response, clear it */
4590         if (priv->hostcmd_wait != NULL) {
4591                 complete(priv->hostcmd_wait);
4592                 priv->hostcmd_wait = NULL;
4593         }
4594
4595         priv->hw_restart_owner = current;
4596         di = priv->device_info;
4597         mwl8k_fw_lock(hw);
4598
4599         if (priv->ap_fw)
4600                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4601         else
4602                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4603
4604         if (rc)
4605                 goto fail;
4606
4607         priv->hw_restart_owner = NULL;
4608         priv->hw_restart_in_progress = false;
4609
4610         /*
4611          * This unlock will wake up the queues and
4612          * also opens the command path for other
4613          * commands
4614          */
4615         mwl8k_fw_unlock(hw);
4616
4617         ieee80211_restart_hw(hw);
4618
4619         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4620
4621         return;
4622 fail:
4623         mwl8k_fw_unlock(hw);
4624
4625         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4626 }
4627
4628 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4629 {
4630         struct ieee80211_conf *conf = &hw->conf;
4631         struct mwl8k_priv *priv = hw->priv;
4632         int rc;
4633
4634         if (conf->flags & IEEE80211_CONF_IDLE) {
4635                 mwl8k_cmd_radio_disable(hw);
4636                 return 0;
4637         }
4638
4639         rc = mwl8k_fw_lock(hw);
4640         if (rc)
4641                 return rc;
4642
4643         rc = mwl8k_cmd_radio_enable(hw);
4644         if (rc)
4645                 goto out;
4646
4647         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4648         if (rc)
4649                 goto out;
4650
4651         if (conf->power_level > 18)
4652                 conf->power_level = 18;
4653
4654         if (priv->ap_fw) {
4655
4656                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4657                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4658                         if (rc)
4659                                 goto out;
4660                 }
4661
4662                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4663                 if (rc)
4664                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4665                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4666                 if (rc)
4667                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4668
4669         } else {
4670                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4671                 if (rc)
4672                         goto out;
4673                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4674         }
4675
4676 out:
4677         mwl8k_fw_unlock(hw);
4678
4679         return rc;
4680 }
4681
4682 static void
4683 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4684                            struct ieee80211_bss_conf *info, u32 changed)
4685 {
4686         struct mwl8k_priv *priv = hw->priv;
4687         u32 ap_legacy_rates = 0;
4688         u8 ap_mcs_rates[16];
4689         int rc;
4690
4691         if (mwl8k_fw_lock(hw))
4692                 return;
4693
4694         /*
4695          * No need to capture a beacon if we're no longer associated.
4696          */
4697         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4698                 priv->capture_beacon = false;
4699
4700         /*
4701          * Get the AP's legacy and MCS rates.
4702          */
4703         if (vif->bss_conf.assoc) {
4704                 struct ieee80211_sta *ap;
4705
4706                 rcu_read_lock();
4707
4708                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4709                 if (ap == NULL) {
4710                         rcu_read_unlock();
4711                         goto out;
4712                 }
4713
4714                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4715                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4716                 } else {
4717                         ap_legacy_rates =
4718                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4719                 }
4720                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4721
4722                 rcu_read_unlock();
4723         }
4724
4725         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4726                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4727                 if (rc)
4728                         goto out;
4729
4730                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4731                 if (rc)
4732                         goto out;
4733         }
4734
4735         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4736                 rc = mwl8k_set_radio_preamble(hw,
4737                                 vif->bss_conf.use_short_preamble);
4738                 if (rc)
4739                         goto out;
4740         }
4741
4742         if (changed & BSS_CHANGED_ERP_SLOT) {
4743                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4744                 if (rc)
4745                         goto out;
4746         }
4747
4748         if (vif->bss_conf.assoc &&
4749             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4750                         BSS_CHANGED_HT))) {
4751                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4752                 if (rc)
4753                         goto out;
4754         }
4755
4756         if (vif->bss_conf.assoc &&
4757             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4758                 /*
4759                  * Finalize the join.  Tell rx handler to process
4760                  * next beacon from our BSSID.
4761                  */
4762                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4763                 priv->capture_beacon = true;
4764         }
4765
4766 out:
4767         mwl8k_fw_unlock(hw);
4768 }
4769
4770 static void
4771 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4772                           struct ieee80211_bss_conf *info, u32 changed)
4773 {
4774         int rc;
4775
4776         if (mwl8k_fw_lock(hw))
4777                 return;
4778
4779         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4780                 rc = mwl8k_set_radio_preamble(hw,
4781                                 vif->bss_conf.use_short_preamble);
4782                 if (rc)
4783                         goto out;
4784         }
4785
4786         if (changed & BSS_CHANGED_BASIC_RATES) {
4787                 int idx;
4788                 int rate;
4789
4790                 /*
4791                  * Use lowest supported basic rate for multicasts
4792                  * and management frames (such as probe responses --
4793                  * beacons will always go out at 1 Mb/s).
4794                  */
4795                 idx = ffs(vif->bss_conf.basic_rates);
4796                 if (idx)
4797                         idx--;
4798
4799                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4800                         rate = mwl8k_rates_24[idx].hw_value;
4801                 else
4802                         rate = mwl8k_rates_50[idx].hw_value;
4803
4804                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4805         }
4806
4807         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4808                 struct sk_buff *skb;
4809
4810                 skb = ieee80211_beacon_get(hw, vif);
4811                 if (skb != NULL) {
4812                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4813                         kfree_skb(skb);
4814                 }
4815         }
4816
4817         if (changed & BSS_CHANGED_BEACON_ENABLED)
4818                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4819
4820 out:
4821         mwl8k_fw_unlock(hw);
4822 }
4823
4824 static void
4825 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4826                        struct ieee80211_bss_conf *info, u32 changed)
4827 {
4828         struct mwl8k_priv *priv = hw->priv;
4829
4830         if (!priv->ap_fw)
4831                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4832         else
4833                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4834 }
4835
4836 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4837                                    struct netdev_hw_addr_list *mc_list)
4838 {
4839         struct mwl8k_cmd_pkt *cmd;
4840
4841         /*
4842          * Synthesize and return a command packet that programs the
4843          * hardware multicast address filter.  At this point we don't
4844          * know whether FIF_ALLMULTI is being requested, but if it is,
4845          * we'll end up throwing this packet away and creating a new
4846          * one in mwl8k_configure_filter().
4847          */
4848         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4849
4850         return (unsigned long)cmd;
4851 }
4852
4853 static int
4854 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4855                                unsigned int changed_flags,
4856                                unsigned int *total_flags)
4857 {
4858         struct mwl8k_priv *priv = hw->priv;
4859
4860         /*
4861          * Hardware sniffer mode is mutually exclusive with STA
4862          * operation, so refuse to enable sniffer mode if a STA
4863          * interface is active.
4864          */
4865         if (!list_empty(&priv->vif_list)) {
4866                 if (net_ratelimit())
4867                         wiphy_info(hw->wiphy,
4868                                    "not enabling sniffer mode because STA interface is active\n");
4869                 return 0;
4870         }
4871
4872         if (!priv->sniffer_enabled) {
4873                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4874                         return 0;
4875                 priv->sniffer_enabled = true;
4876         }
4877
4878         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4879                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4880                         FIF_OTHER_BSS;
4881
4882         return 1;
4883 }
4884
4885 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4886 {
4887         if (!list_empty(&priv->vif_list))
4888                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4889
4890         return NULL;
4891 }
4892
4893 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4894                                    unsigned int changed_flags,
4895                                    unsigned int *total_flags,
4896                                    u64 multicast)
4897 {
4898         struct mwl8k_priv *priv = hw->priv;
4899         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4900
4901         /*
4902          * AP firmware doesn't allow fine-grained control over
4903          * the receive filter.
4904          */
4905         if (priv->ap_fw) {
4906                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4907                 kfree(cmd);
4908                 return;
4909         }
4910
4911         /*
4912          * Enable hardware sniffer mode if FIF_CONTROL or
4913          * FIF_OTHER_BSS is requested.
4914          */
4915         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4916             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4917                 kfree(cmd);
4918                 return;
4919         }
4920
4921         /* Clear unsupported feature flags */
4922         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4923
4924         if (mwl8k_fw_lock(hw)) {
4925                 kfree(cmd);
4926                 return;
4927         }
4928
4929         if (priv->sniffer_enabled) {
4930                 mwl8k_cmd_enable_sniffer(hw, 0);
4931                 priv->sniffer_enabled = false;
4932         }
4933
4934         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4935                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4936                         /*
4937                          * Disable the BSS filter.
4938                          */
4939                         mwl8k_cmd_set_pre_scan(hw);
4940                 } else {
4941                         struct mwl8k_vif *mwl8k_vif;
4942                         const u8 *bssid;
4943
4944                         /*
4945                          * Enable the BSS filter.
4946                          *
4947                          * If there is an active STA interface, use that
4948                          * interface's BSSID, otherwise use a dummy one
4949                          * (where the OUI part needs to be nonzero for
4950                          * the BSSID to be accepted by POST_SCAN).
4951                          */
4952                         mwl8k_vif = mwl8k_first_vif(priv);
4953                         if (mwl8k_vif != NULL)
4954                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4955                         else
4956                                 bssid = "\x01\x00\x00\x00\x00\x00";
4957
4958                         mwl8k_cmd_set_post_scan(hw, bssid);
4959                 }
4960         }
4961
4962         /*
4963          * If FIF_ALLMULTI is being requested, throw away the command
4964          * packet that ->prepare_multicast() built and replace it with
4965          * a command packet that enables reception of all multicast
4966          * packets.
4967          */
4968         if (*total_flags & FIF_ALLMULTI) {
4969                 kfree(cmd);
4970                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4971         }
4972
4973         if (cmd != NULL) {
4974                 mwl8k_post_cmd(hw, cmd);
4975                 kfree(cmd);
4976         }
4977
4978         mwl8k_fw_unlock(hw);
4979 }
4980
4981 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4982 {
4983         return mwl8k_cmd_set_rts_threshold(hw, value);
4984 }
4985
4986 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4987                             struct ieee80211_vif *vif,
4988                             struct ieee80211_sta *sta)
4989 {
4990         struct mwl8k_priv *priv = hw->priv;
4991
4992         if (priv->ap_fw)
4993                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4994         else
4995                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4996 }
4997
4998 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4999                          struct ieee80211_vif *vif,
5000                          struct ieee80211_sta *sta)
5001 {
5002         struct mwl8k_priv *priv = hw->priv;
5003         int ret;
5004         int i;
5005         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5006         struct ieee80211_key_conf *key;
5007
5008         if (!priv->ap_fw) {
5009                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5010                 if (ret >= 0) {
5011                         MWL8K_STA(sta)->peer_id = ret;
5012                         if (sta->ht_cap.ht_supported)
5013                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5014                         ret = 0;
5015                 }
5016
5017         } else {
5018                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5019         }
5020
5021         for (i = 0; i < NUM_WEP_KEYS; i++) {
5022                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5023                 if (mwl8k_vif->wep_key_conf[i].enabled)
5024                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5025         }
5026         return ret;
5027 }
5028
5029 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5030                          struct ieee80211_vif *vif, u16 queue,
5031                          const struct ieee80211_tx_queue_params *params)
5032 {
5033         struct mwl8k_priv *priv = hw->priv;
5034         int rc;
5035
5036         rc = mwl8k_fw_lock(hw);
5037         if (!rc) {
5038                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5039                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5040
5041                 if (!priv->wmm_enabled)
5042                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5043
5044                 if (!rc) {
5045                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5046                         rc = mwl8k_cmd_set_edca_params(hw, q,
5047                                                        params->cw_min,
5048                                                        params->cw_max,
5049                                                        params->aifs,
5050                                                        params->txop);
5051                 }
5052
5053                 mwl8k_fw_unlock(hw);
5054         }
5055
5056         return rc;
5057 }
5058
5059 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5060                            struct ieee80211_low_level_stats *stats)
5061 {
5062         return mwl8k_cmd_get_stat(hw, stats);
5063 }
5064
5065 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5066                                 struct survey_info *survey)
5067 {
5068         struct mwl8k_priv *priv = hw->priv;
5069         struct ieee80211_conf *conf = &hw->conf;
5070
5071         if (idx != 0)
5072                 return -ENOENT;
5073
5074         survey->channel = conf->channel;
5075         survey->filled = SURVEY_INFO_NOISE_DBM;
5076         survey->noise = priv->noise;
5077
5078         return 0;
5079 }
5080
5081 #define MAX_AMPDU_ATTEMPTS 5
5082
5083 static int
5084 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5085                    enum ieee80211_ampdu_mlme_action action,
5086                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5087                    u8 buf_size)
5088 {
5089
5090         int i, rc = 0;
5091         struct mwl8k_priv *priv = hw->priv;
5092         struct mwl8k_ampdu_stream *stream;
5093         u8 *addr = sta->addr;
5094         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5095
5096         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5097                 return -ENOTSUPP;
5098
5099         spin_lock(&priv->stream_lock);
5100         stream = mwl8k_lookup_stream(hw, addr, tid);
5101
5102         switch (action) {
5103         case IEEE80211_AMPDU_RX_START:
5104         case IEEE80211_AMPDU_RX_STOP:
5105                 break;
5106         case IEEE80211_AMPDU_TX_START:
5107                 /* By the time we get here the hw queues may contain outgoing
5108                  * packets for this RA/TID that are not part of this BA
5109                  * session.  The hw will assign sequence numbers to these
5110                  * packets as they go out.  So if we query the hw for its next
5111                  * sequence number and use that for the SSN here, it may end up
5112                  * being wrong, which will lead to sequence number mismatch at
5113                  * the recipient.  To avoid this, we reset the sequence number
5114                  * to O for the first MPDU in this BA stream.
5115                  */
5116                 *ssn = 0;
5117                 if (stream == NULL) {
5118                         /* This means that somebody outside this driver called
5119                          * ieee80211_start_tx_ba_session.  This is unexpected
5120                          * because we do our own rate control.  Just warn and
5121                          * move on.
5122                          */
5123                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5124                                    "Proceeding anyway.\n", __func__);
5125                         stream = mwl8k_add_stream(hw, sta, tid);
5126                 }
5127                 if (stream == NULL) {
5128                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5129                         rc = -EBUSY;
5130                         break;
5131                 }
5132                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5133
5134                 /* Release the lock before we do the time consuming stuff */
5135                 spin_unlock(&priv->stream_lock);
5136                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5137
5138                         /* Check if link is still valid */
5139                         if (!sta_info->is_ampdu_allowed) {
5140                                 spin_lock(&priv->stream_lock);
5141                                 mwl8k_remove_stream(hw, stream);
5142                                 spin_unlock(&priv->stream_lock);
5143                                 return -EBUSY;
5144                         }
5145
5146                         rc = mwl8k_check_ba(hw, stream, vif);
5147
5148                         /* If HW restart is in progress mwl8k_post_cmd will
5149                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5150                          * such cases
5151                          */
5152                         if (!rc || rc == -EBUSY)
5153                                 break;
5154                         /*
5155                          * HW queues take time to be flushed, give them
5156                          * sufficient time
5157                          */
5158
5159                         msleep(1000);
5160                 }
5161                 spin_lock(&priv->stream_lock);
5162                 if (rc) {
5163                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5164                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5165                         mwl8k_remove_stream(hw, stream);
5166                         rc = -EBUSY;
5167                         break;
5168                 }
5169                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5170                 break;
5171         case IEEE80211_AMPDU_TX_STOP_CONT:
5172         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5173         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5174                 if (stream) {
5175                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5176                                 spin_unlock(&priv->stream_lock);
5177                                 mwl8k_destroy_ba(hw, stream);
5178                                 spin_lock(&priv->stream_lock);
5179                         }
5180                         mwl8k_remove_stream(hw, stream);
5181                 }
5182                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5183                 break;
5184         case IEEE80211_AMPDU_TX_OPERATIONAL:
5185                 BUG_ON(stream == NULL);
5186                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5187                 spin_unlock(&priv->stream_lock);
5188                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5189                 spin_lock(&priv->stream_lock);
5190                 if (!rc)
5191                         stream->state = AMPDU_STREAM_ACTIVE;
5192                 else {
5193                         spin_unlock(&priv->stream_lock);
5194                         mwl8k_destroy_ba(hw, stream);
5195                         spin_lock(&priv->stream_lock);
5196                         wiphy_debug(hw->wiphy,
5197                                 "Failed adding stream for sta %pM tid %d\n",
5198                                 addr, tid);
5199                         mwl8k_remove_stream(hw, stream);
5200                 }
5201                 break;
5202
5203         default:
5204                 rc = -ENOTSUPP;
5205         }
5206
5207         spin_unlock(&priv->stream_lock);
5208         return rc;
5209 }
5210
5211 static const struct ieee80211_ops mwl8k_ops = {
5212         .tx                     = mwl8k_tx,
5213         .start                  = mwl8k_start,
5214         .stop                   = mwl8k_stop,
5215         .add_interface          = mwl8k_add_interface,
5216         .remove_interface       = mwl8k_remove_interface,
5217         .config                 = mwl8k_config,
5218         .bss_info_changed       = mwl8k_bss_info_changed,
5219         .prepare_multicast      = mwl8k_prepare_multicast,
5220         .configure_filter       = mwl8k_configure_filter,
5221         .set_key                = mwl8k_set_key,
5222         .set_rts_threshold      = mwl8k_set_rts_threshold,
5223         .sta_add                = mwl8k_sta_add,
5224         .sta_remove             = mwl8k_sta_remove,
5225         .conf_tx                = mwl8k_conf_tx,
5226         .get_stats              = mwl8k_get_stats,
5227         .get_survey             = mwl8k_get_survey,
5228         .ampdu_action           = mwl8k_ampdu_action,
5229 };
5230
5231 static void mwl8k_finalize_join_worker(struct work_struct *work)
5232 {
5233         struct mwl8k_priv *priv =
5234                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5235         struct sk_buff *skb = priv->beacon_skb;
5236         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5237         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5238         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5239                                          mgmt->u.beacon.variable, len);
5240         int dtim_period = 1;
5241
5242         if (tim && tim[1] >= 2)
5243                 dtim_period = tim[3];
5244
5245         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5246
5247         dev_kfree_skb(skb);
5248         priv->beacon_skb = NULL;
5249 }
5250
5251 enum {
5252         MWL8363 = 0,
5253         MWL8687,
5254         MWL8366,
5255 };
5256
5257 #define MWL8K_8366_AP_FW_API 2
5258 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5259 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5260
5261 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5262         [MWL8363] = {
5263                 .part_name      = "88w8363",
5264                 .helper_image   = "mwl8k/helper_8363.fw",
5265                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5266         },
5267         [MWL8687] = {
5268                 .part_name      = "88w8687",
5269                 .helper_image   = "mwl8k/helper_8687.fw",
5270                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5271         },
5272         [MWL8366] = {
5273                 .part_name      = "88w8366",
5274                 .helper_image   = "mwl8k/helper_8366.fw",
5275                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5276                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5277                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5278                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5279         },
5280 };
5281
5282 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5283 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5284 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5285 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5286 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5287 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5288 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5289
5290 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5291         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5292         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5293         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5294         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5295         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5296         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5297         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5298         { },
5299 };
5300 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5301
5302 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5303 {
5304         int rc;
5305         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5306                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5307                priv->fw_pref, priv->fw_alt);
5308         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5309         if (rc) {
5310                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5311                        pci_name(priv->pdev), priv->fw_alt);
5312                 return rc;
5313         }
5314         return 0;
5315 }
5316
5317 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5318 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5319 {
5320         struct mwl8k_priv *priv = context;
5321         struct mwl8k_device_info *di = priv->device_info;
5322         int rc;
5323
5324         switch (priv->fw_state) {
5325         case FW_STATE_INIT:
5326                 if (!fw) {
5327                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5328                                pci_name(priv->pdev), di->helper_image);
5329                         goto fail;
5330                 }
5331                 priv->fw_helper = fw;
5332                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5333                                       true);
5334                 if (rc && priv->fw_alt) {
5335                         rc = mwl8k_request_alt_fw(priv);
5336                         if (rc)
5337                                 goto fail;
5338                         priv->fw_state = FW_STATE_LOADING_ALT;
5339                 } else if (rc)
5340                         goto fail;
5341                 else
5342                         priv->fw_state = FW_STATE_LOADING_PREF;
5343                 break;
5344
5345         case FW_STATE_LOADING_PREF:
5346                 if (!fw) {
5347                         if (priv->fw_alt) {
5348                                 rc = mwl8k_request_alt_fw(priv);
5349                                 if (rc)
5350                                         goto fail;
5351                                 priv->fw_state = FW_STATE_LOADING_ALT;
5352                         } else
5353                                 goto fail;
5354                 } else {
5355                         priv->fw_ucode = fw;
5356                         rc = mwl8k_firmware_load_success(priv);
5357                         if (rc)
5358                                 goto fail;
5359                         else
5360                                 complete(&priv->firmware_loading_complete);
5361                 }
5362                 break;
5363
5364         case FW_STATE_LOADING_ALT:
5365                 if (!fw) {
5366                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5367                                pci_name(priv->pdev), di->helper_image);
5368                         goto fail;
5369                 }
5370                 priv->fw_ucode = fw;
5371                 rc = mwl8k_firmware_load_success(priv);
5372                 if (rc)
5373                         goto fail;
5374                 else
5375                         complete(&priv->firmware_loading_complete);
5376                 break;
5377
5378         default:
5379                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5380                        MWL8K_NAME, priv->fw_state);
5381                 BUG_ON(1);
5382         }
5383
5384         return;
5385
5386 fail:
5387         priv->fw_state = FW_STATE_ERROR;
5388         complete(&priv->firmware_loading_complete);
5389         device_release_driver(&priv->pdev->dev);
5390         mwl8k_release_firmware(priv);
5391 }
5392
5393 #define MAX_RESTART_ATTEMPTS 1
5394 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5395                                bool nowait)
5396 {
5397         struct mwl8k_priv *priv = hw->priv;
5398         int rc;
5399         int count = MAX_RESTART_ATTEMPTS;
5400
5401 retry:
5402         /* Reset firmware and hardware */
5403         mwl8k_hw_reset(priv);
5404
5405         /* Ask userland hotplug daemon for the device firmware */
5406         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5407         if (rc) {
5408                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5409                 return rc;
5410         }
5411
5412         if (nowait)
5413                 return rc;
5414
5415         /* Load firmware into hardware */
5416         rc = mwl8k_load_firmware(hw);
5417         if (rc)
5418                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5419
5420         /* Reclaim memory once firmware is successfully loaded */
5421         mwl8k_release_firmware(priv);
5422
5423         if (rc && count) {
5424                 /* FW did not start successfully;
5425                  * lets try one more time
5426                  */
5427                 count--;
5428                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5429                 msleep(20);
5430                 goto retry;
5431         }
5432
5433         return rc;
5434 }
5435
5436 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5437 {
5438         struct mwl8k_priv *priv = hw->priv;
5439         int rc = 0;
5440         int i;
5441
5442         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5443                 rc = mwl8k_txq_init(hw, i);
5444                 if (rc)
5445                         break;
5446                 if (priv->ap_fw)
5447                         iowrite32(priv->txq[i].txd_dma,
5448                                   priv->sram + priv->txq_offset[i]);
5449         }
5450         return rc;
5451 }
5452
5453 /* initialize hw after successfully loading a firmware image */
5454 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5455 {
5456         struct mwl8k_priv *priv = hw->priv;
5457         int rc = 0;
5458         int i;
5459
5460         if (priv->ap_fw) {
5461                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5462                 if (priv->rxd_ops == NULL) {
5463                         wiphy_err(hw->wiphy,
5464                                   "Driver does not have AP firmware image support for this hardware\n");
5465                         goto err_stop_firmware;
5466                 }
5467         } else {
5468                 priv->rxd_ops = &rxd_sta_ops;
5469         }
5470
5471         priv->sniffer_enabled = false;
5472         priv->wmm_enabled = false;
5473         priv->pending_tx_pkts = 0;
5474
5475         rc = mwl8k_rxq_init(hw, 0);
5476         if (rc)
5477                 goto err_stop_firmware;
5478         rxq_refill(hw, 0, INT_MAX);
5479
5480         /* For the sta firmware, we need to know the dma addresses of tx queues
5481          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5482          * prior to issuing this command.  But for the AP case, we learn the
5483          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5484          * case we must initialize the tx queues after.
5485          */
5486         priv->num_ampdu_queues = 0;
5487         if (!priv->ap_fw) {
5488                 rc = mwl8k_init_txqs(hw);
5489                 if (rc)
5490                         goto err_free_queues;
5491         }
5492
5493         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5494         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5495         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5496                   MWL8K_A2H_INT_BA_WATCHDOG,
5497                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5498         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5499                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5500
5501         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5502                          IRQF_SHARED, MWL8K_NAME, hw);
5503         if (rc) {
5504                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5505                 goto err_free_queues;
5506         }
5507
5508         /*
5509          * When hw restart is requested,
5510          * mac80211 will take care of clearing
5511          * the ampdu streams, so do not clear
5512          * the ampdu state here
5513          */
5514         if (!priv->hw_restart_in_progress)
5515                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5516
5517         /*
5518          * Temporarily enable interrupts.  Initial firmware host
5519          * commands use interrupts and avoid polling.  Disable
5520          * interrupts when done.
5521          */
5522         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5523
5524         /* Get config data, mac addrs etc */
5525         if (priv->ap_fw) {
5526                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5527                 if (!rc)
5528                         rc = mwl8k_init_txqs(hw);
5529                 if (!rc)
5530                         rc = mwl8k_cmd_set_hw_spec(hw);
5531         } else {
5532                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5533         }
5534         if (rc) {
5535                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5536                 goto err_free_irq;
5537         }
5538
5539         /* Turn radio off */
5540         rc = mwl8k_cmd_radio_disable(hw);
5541         if (rc) {
5542                 wiphy_err(hw->wiphy, "Cannot disable\n");
5543                 goto err_free_irq;
5544         }
5545
5546         /* Clear MAC address */
5547         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5548         if (rc) {
5549                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5550                 goto err_free_irq;
5551         }
5552
5553         /* Disable interrupts */
5554         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5555         free_irq(priv->pdev->irq, hw);
5556
5557         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5558                    priv->device_info->part_name,
5559                    priv->hw_rev, hw->wiphy->perm_addr,
5560                    priv->ap_fw ? "AP" : "STA",
5561                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5562                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5563
5564         return 0;
5565
5566 err_free_irq:
5567         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5568         free_irq(priv->pdev->irq, hw);
5569
5570 err_free_queues:
5571         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5572                 mwl8k_txq_deinit(hw, i);
5573         mwl8k_rxq_deinit(hw, 0);
5574
5575 err_stop_firmware:
5576         mwl8k_hw_reset(priv);
5577
5578         return rc;
5579 }
5580
5581 /*
5582  * invoke mwl8k_reload_firmware to change the firmware image after the device
5583  * has already been registered
5584  */
5585 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5586 {
5587         int i, rc = 0;
5588         struct mwl8k_priv *priv = hw->priv;
5589         struct mwl8k_vif *vif, *tmp_vif;
5590
5591         mwl8k_stop(hw);
5592         mwl8k_rxq_deinit(hw, 0);
5593
5594         /*
5595          * All the existing interfaces are re-added by the ieee80211_reconfig;
5596          * which means driver should remove existing interfaces before calling
5597          * ieee80211_restart_hw
5598          */
5599         if (priv->hw_restart_in_progress)
5600                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5601                         mwl8k_remove_vif(priv, vif);
5602
5603         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5604                 mwl8k_txq_deinit(hw, i);
5605
5606         rc = mwl8k_init_firmware(hw, fw_image, false);
5607         if (rc)
5608                 goto fail;
5609
5610         rc = mwl8k_probe_hw(hw);
5611         if (rc)
5612                 goto fail;
5613
5614         if (priv->hw_restart_in_progress)
5615                 return rc;
5616
5617         rc = mwl8k_start(hw);
5618         if (rc)
5619                 goto fail;
5620
5621         rc = mwl8k_config(hw, ~0);
5622         if (rc)
5623                 goto fail;
5624
5625         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5626                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5627                 if (rc)
5628                         goto fail;
5629         }
5630
5631         return rc;
5632
5633 fail:
5634         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5635         return rc;
5636 }
5637
5638 static const struct ieee80211_iface_limit ap_if_limits[] = {
5639         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
5640 };
5641
5642 static const struct ieee80211_iface_combination ap_if_comb = {
5643         .limits = ap_if_limits,
5644         .n_limits = ARRAY_SIZE(ap_if_limits),
5645         .max_interfaces = 8,
5646         .num_different_channels = 1,
5647 };
5648
5649
5650 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5651 {
5652         struct ieee80211_hw *hw = priv->hw;
5653         int i, rc;
5654
5655         rc = mwl8k_load_firmware(hw);
5656         mwl8k_release_firmware(priv);
5657         if (rc) {
5658                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5659                 return rc;
5660         }
5661
5662         /*
5663          * Extra headroom is the size of the required DMA header
5664          * minus the size of the smallest 802.11 frame (CTS frame).
5665          */
5666         hw->extra_tx_headroom =
5667                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5668
5669         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5670
5671         hw->channel_change_time = 10;
5672
5673         hw->queues = MWL8K_TX_WMM_QUEUES;
5674
5675         /* Set rssi values to dBm */
5676         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5677
5678         /*
5679          * Ask mac80211 to not to trigger PS mode
5680          * based on PM bit of incoming frames.
5681          */
5682         if (priv->ap_fw)
5683                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5684
5685         hw->vif_data_size = sizeof(struct mwl8k_vif);
5686         hw->sta_data_size = sizeof(struct mwl8k_sta);
5687
5688         priv->macids_used = 0;
5689         INIT_LIST_HEAD(&priv->vif_list);
5690
5691         /* Set default radio state and preamble */
5692         priv->radio_on = false;
5693         priv->radio_short_preamble = false;
5694
5695         /* Finalize join worker */
5696         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5697         /* Handle watchdog ba events */
5698         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5699         /* To reload the firmware if it crashes */
5700         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5701
5702         /* TX reclaim and RX tasklets.  */
5703         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5704         tasklet_disable(&priv->poll_tx_task);
5705         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5706         tasklet_disable(&priv->poll_rx_task);
5707
5708         /* Power management cookie */
5709         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5710         if (priv->cookie == NULL)
5711                 return -ENOMEM;
5712
5713         mutex_init(&priv->fw_mutex);
5714         priv->fw_mutex_owner = NULL;
5715         priv->fw_mutex_depth = 0;
5716         priv->hostcmd_wait = NULL;
5717
5718         spin_lock_init(&priv->tx_lock);
5719
5720         spin_lock_init(&priv->stream_lock);
5721
5722         priv->tx_wait = NULL;
5723
5724         rc = mwl8k_probe_hw(hw);
5725         if (rc)
5726                 goto err_free_cookie;
5727
5728         hw->wiphy->interface_modes = 0;
5729
5730         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5731                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5732                 hw->wiphy->iface_combinations = &ap_if_comb;
5733                 hw->wiphy->n_iface_combinations = 1;
5734         }
5735
5736         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5737                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5738
5739         rc = ieee80211_register_hw(hw);
5740         if (rc) {
5741                 wiphy_err(hw->wiphy, "Cannot register device\n");
5742                 goto err_unprobe_hw;
5743         }
5744
5745         return 0;
5746
5747 err_unprobe_hw:
5748         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5749                 mwl8k_txq_deinit(hw, i);
5750         mwl8k_rxq_deinit(hw, 0);
5751
5752 err_free_cookie:
5753         if (priv->cookie != NULL)
5754                 pci_free_consistent(priv->pdev, 4,
5755                                 priv->cookie, priv->cookie_dma);
5756
5757         return rc;
5758 }
5759 static int mwl8k_probe(struct pci_dev *pdev,
5760                                  const struct pci_device_id *id)
5761 {
5762         static int printed_version;
5763         struct ieee80211_hw *hw;
5764         struct mwl8k_priv *priv;
5765         struct mwl8k_device_info *di;
5766         int rc;
5767
5768         if (!printed_version) {
5769                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5770                 printed_version = 1;
5771         }
5772
5773
5774         rc = pci_enable_device(pdev);
5775         if (rc) {
5776                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5777                        MWL8K_NAME);
5778                 return rc;
5779         }
5780
5781         rc = pci_request_regions(pdev, MWL8K_NAME);
5782         if (rc) {
5783                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5784                        MWL8K_NAME);
5785                 goto err_disable_device;
5786         }
5787
5788         pci_set_master(pdev);
5789
5790
5791         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5792         if (hw == NULL) {
5793                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5794                 rc = -ENOMEM;
5795                 goto err_free_reg;
5796         }
5797
5798         SET_IEEE80211_DEV(hw, &pdev->dev);
5799         pci_set_drvdata(pdev, hw);
5800
5801         priv = hw->priv;
5802         priv->hw = hw;
5803         priv->pdev = pdev;
5804         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5805
5806
5807         priv->sram = pci_iomap(pdev, 0, 0x10000);
5808         if (priv->sram == NULL) {
5809                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5810                 goto err_iounmap;
5811         }
5812
5813         /*
5814          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5815          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5816          */
5817         priv->regs = pci_iomap(pdev, 1, 0x10000);
5818         if (priv->regs == NULL) {
5819                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5820                 if (priv->regs == NULL) {
5821                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5822                         goto err_iounmap;
5823                 }
5824         }
5825
5826         /*
5827          * Choose the initial fw image depending on user input.  If a second
5828          * image is available, make it the alternative image that will be
5829          * loaded if the first one fails.
5830          */
5831         init_completion(&priv->firmware_loading_complete);
5832         di = priv->device_info;
5833         if (ap_mode_default && di->fw_image_ap) {
5834                 priv->fw_pref = di->fw_image_ap;
5835                 priv->fw_alt = di->fw_image_sta;
5836         } else if (!ap_mode_default && di->fw_image_sta) {
5837                 priv->fw_pref = di->fw_image_sta;
5838                 priv->fw_alt = di->fw_image_ap;
5839         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5840                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5841                 priv->fw_pref = di->fw_image_sta;
5842         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5843                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5844                 priv->fw_pref = di->fw_image_ap;
5845         }
5846         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5847         if (rc)
5848                 goto err_stop_firmware;
5849
5850         priv->hw_restart_in_progress = false;
5851
5852         return rc;
5853
5854 err_stop_firmware:
5855         mwl8k_hw_reset(priv);
5856
5857 err_iounmap:
5858         if (priv->regs != NULL)
5859                 pci_iounmap(pdev, priv->regs);
5860
5861         if (priv->sram != NULL)
5862                 pci_iounmap(pdev, priv->sram);
5863
5864         pci_set_drvdata(pdev, NULL);
5865         ieee80211_free_hw(hw);
5866
5867 err_free_reg:
5868         pci_release_regions(pdev);
5869
5870 err_disable_device:
5871         pci_disable_device(pdev);
5872
5873         return rc;
5874 }
5875
5876 static void mwl8k_remove(struct pci_dev *pdev)
5877 {
5878         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5879         struct mwl8k_priv *priv;
5880         int i;
5881
5882         if (hw == NULL)
5883                 return;
5884         priv = hw->priv;
5885
5886         wait_for_completion(&priv->firmware_loading_complete);
5887
5888         if (priv->fw_state == FW_STATE_ERROR) {
5889                 mwl8k_hw_reset(priv);
5890                 goto unmap;
5891         }
5892
5893         ieee80211_stop_queues(hw);
5894
5895         ieee80211_unregister_hw(hw);
5896
5897         /* Remove TX reclaim and RX tasklets.  */
5898         tasklet_kill(&priv->poll_tx_task);
5899         tasklet_kill(&priv->poll_rx_task);
5900
5901         /* Stop hardware */
5902         mwl8k_hw_reset(priv);
5903
5904         /* Return all skbs to mac80211 */
5905         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5906                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5907
5908         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5909                 mwl8k_txq_deinit(hw, i);
5910
5911         mwl8k_rxq_deinit(hw, 0);
5912
5913         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5914
5915 unmap:
5916         pci_iounmap(pdev, priv->regs);
5917         pci_iounmap(pdev, priv->sram);
5918         pci_set_drvdata(pdev, NULL);
5919         ieee80211_free_hw(hw);
5920         pci_release_regions(pdev);
5921         pci_disable_device(pdev);
5922 }
5923
5924 static struct pci_driver mwl8k_driver = {
5925         .name           = MWL8K_NAME,
5926         .id_table       = mwl8k_pci_id_table,
5927         .probe          = mwl8k_probe,
5928         .remove         = mwl8k_remove,
5929 };
5930
5931 module_pci_driver(mwl8k_driver);
5932
5933 MODULE_DESCRIPTION(MWL8K_DESC);
5934 MODULE_VERSION(MWL8K_VERSION);
5935 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5936 MODULE_LICENSE("GPL");