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                                 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1930                                 txpriority = stream->idx + MWL8K_TX_WMM_QUEUES;
1931                                 index = stream->idx + MWL8K_TX_WMM_QUEUES;
1932                         } else if (stream->state == AMPDU_STREAM_NEW) {
1933                                 /* We get here if the driver sends us packets
1934                                  * after we've initiated a stream, but before
1935                                  * our ampdu_action routine has been called
1936                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1937                                  * for the ADDBA request.  So this packet can
1938                                  * go out with no risk of sequence number
1939                                  * mismatch.  No special handling is required.
1940                                  */
1941                         } else {
1942                                 /* Drop packets that would go out after the
1943                                  * ADDBA request was sent but before the ADDBA
1944                                  * response is received.  If we don't do this,
1945                                  * the recipient would probably receive it
1946                                  * after the ADDBA request with SSN 0.  This
1947                                  * will cause the recipient's BA receive window
1948                                  * to shift, which would cause the subsequent
1949                                  * packets in the BA stream to be discarded.
1950                                  * mac80211 queues our packets for us in this
1951                                  * case, so this is really just a safety check.
1952                                  */
1953                                 wiphy_warn(hw->wiphy,
1954                                            "Cannot send packet while ADDBA "
1955                                            "dialog is underway.\n");
1956                                 spin_unlock(&priv->stream_lock);
1957                                 dev_kfree_skb(skb);
1958                                 return;
1959                         }
1960                 } else {
1961                         /* Defer calling mwl8k_start_stream so that the current
1962                          * skb can go out before the ADDBA request.  This
1963                          * prevents sequence number mismatch at the recepient
1964                          * as described above.
1965                          */
1966                         if (mwl8k_ampdu_allowed(sta, tid)) {
1967                                 stream = mwl8k_add_stream(hw, sta, tid);
1968                                 if (stream != NULL)
1969                                         start_ba_session = true;
1970                         }
1971                 }
1972                 spin_unlock(&priv->stream_lock);
1973         } else {
1974                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1975                 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1976         }
1977
1978         dma = pci_map_single(priv->pdev, skb->data,
1979                                 skb->len, PCI_DMA_TODEVICE);
1980
1981         if (pci_dma_mapping_error(priv->pdev, dma)) {
1982                 wiphy_debug(hw->wiphy,
1983                             "failed to dma map skb, dropping TX frame.\n");
1984                 if (start_ba_session) {
1985                         spin_lock(&priv->stream_lock);
1986                         mwl8k_remove_stream(hw, stream);
1987                         spin_unlock(&priv->stream_lock);
1988                 }
1989                 dev_kfree_skb(skb);
1990                 return;
1991         }
1992
1993         spin_lock_bh(&priv->tx_lock);
1994
1995         txq = priv->txq + index;
1996
1997         /* Mgmt frames that go out frequently are probe
1998          * responses. Other mgmt frames got out relatively
1999          * infrequently. Hence reserve 2 buffers so that
2000          * other mgmt frames do not get dropped due to an
2001          * already queued probe response in one of the
2002          * reserved buffers.
2003          */
2004
2005         if (txq->len >= MWL8K_TX_DESCS - 2) {
2006                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2007                         if (start_ba_session) {
2008                                 spin_lock(&priv->stream_lock);
2009                                 mwl8k_remove_stream(hw, stream);
2010                                 spin_unlock(&priv->stream_lock);
2011                         }
2012                         spin_unlock_bh(&priv->tx_lock);
2013                         pci_unmap_single(priv->pdev, dma, skb->len,
2014                                          PCI_DMA_TODEVICE);
2015                         dev_kfree_skb(skb);
2016                         return;
2017                 }
2018         }
2019
2020         BUG_ON(txq->skb[txq->tail] != NULL);
2021         txq->skb[txq->tail] = skb;
2022
2023         tx = txq->txd + txq->tail;
2024         tx->data_rate = txdatarate;
2025         tx->tx_priority = txpriority;
2026         tx->qos_control = cpu_to_le16(qos);
2027         tx->pkt_phys_addr = cpu_to_le32(dma);
2028         tx->pkt_len = cpu_to_le16(skb->len);
2029         tx->rate_info = 0;
2030         if (!priv->ap_fw && sta != NULL)
2031                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2032         else
2033                 tx->peer_id = 0;
2034
2035         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2036                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2037                                                 MWL8K_HW_TIMER_REGISTER));
2038         else
2039                 tx->timestamp = 0;
2040
2041         wmb();
2042         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2043
2044         txq->len++;
2045         priv->pending_tx_pkts++;
2046
2047         txq->tail++;
2048         if (txq->tail == MWL8K_TX_DESCS)
2049                 txq->tail = 0;
2050
2051         mwl8k_tx_start(priv);
2052
2053         spin_unlock_bh(&priv->tx_lock);
2054
2055         /* Initiate the ampdu session here */
2056         if (start_ba_session) {
2057                 spin_lock(&priv->stream_lock);
2058                 if (mwl8k_start_stream(hw, stream))
2059                         mwl8k_remove_stream(hw, stream);
2060                 spin_unlock(&priv->stream_lock);
2061         }
2062 }
2063
2064
2065 /*
2066  * Firmware access.
2067  *
2068  * We have the following requirements for issuing firmware commands:
2069  * - Some commands require that the packet transmit path is idle when
2070  *   the command is issued.  (For simplicity, we'll just quiesce the
2071  *   transmit path for every command.)
2072  * - There are certain sequences of commands that need to be issued to
2073  *   the hardware sequentially, with no other intervening commands.
2074  *
2075  * This leads to an implementation of a "firmware lock" as a mutex that
2076  * can be taken recursively, and which is taken by both the low-level
2077  * command submission function (mwl8k_post_cmd) as well as any users of
2078  * that function that require issuing of an atomic sequence of commands,
2079  * and quiesces the transmit path whenever it's taken.
2080  */
2081 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2082 {
2083         struct mwl8k_priv *priv = hw->priv;
2084
2085         if (priv->fw_mutex_owner != current) {
2086                 int rc;
2087
2088                 mutex_lock(&priv->fw_mutex);
2089                 ieee80211_stop_queues(hw);
2090
2091                 rc = mwl8k_tx_wait_empty(hw);
2092                 if (rc) {
2093                         if (!priv->hw_restart_in_progress)
2094                                 ieee80211_wake_queues(hw);
2095
2096                         mutex_unlock(&priv->fw_mutex);
2097
2098                         return rc;
2099                 }
2100
2101                 priv->fw_mutex_owner = current;
2102         }
2103
2104         priv->fw_mutex_depth++;
2105
2106         return 0;
2107 }
2108
2109 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2110 {
2111         struct mwl8k_priv *priv = hw->priv;
2112
2113         if (!--priv->fw_mutex_depth) {
2114                 if (!priv->hw_restart_in_progress)
2115                         ieee80211_wake_queues(hw);
2116
2117                 priv->fw_mutex_owner = NULL;
2118                 mutex_unlock(&priv->fw_mutex);
2119         }
2120 }
2121
2122
2123 /*
2124  * Command processing.
2125  */
2126
2127 /* Timeout firmware commands after 10s */
2128 #define MWL8K_CMD_TIMEOUT_MS    10000
2129
2130 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2131 {
2132         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2133         struct mwl8k_priv *priv = hw->priv;
2134         void __iomem *regs = priv->regs;
2135         dma_addr_t dma_addr;
2136         unsigned int dma_size;
2137         int rc;
2138         unsigned long timeout = 0;
2139         u8 buf[32];
2140
2141         cmd->result = (__force __le16) 0xffff;
2142         dma_size = le16_to_cpu(cmd->length);
2143         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2144                                   PCI_DMA_BIDIRECTIONAL);
2145         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2146                 return -ENOMEM;
2147
2148         rc = mwl8k_fw_lock(hw);
2149         if (rc) {
2150                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2151                                                 PCI_DMA_BIDIRECTIONAL);
2152                 return rc;
2153         }
2154
2155         priv->hostcmd_wait = &cmd_wait;
2156         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2157         iowrite32(MWL8K_H2A_INT_DOORBELL,
2158                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2159         iowrite32(MWL8K_H2A_INT_DUMMY,
2160                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2161
2162         timeout = wait_for_completion_timeout(&cmd_wait,
2163                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2164
2165         priv->hostcmd_wait = NULL;
2166
2167         mwl8k_fw_unlock(hw);
2168
2169         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2170                                         PCI_DMA_BIDIRECTIONAL);
2171
2172         if (!timeout) {
2173                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2174                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2175                           MWL8K_CMD_TIMEOUT_MS);
2176                 rc = -ETIMEDOUT;
2177         } else {
2178                 int ms;
2179
2180                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2181
2182                 rc = cmd->result ? -EINVAL : 0;
2183                 if (rc)
2184                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2185                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2186                                   le16_to_cpu(cmd->result));
2187                 else if (ms > 2000)
2188                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2189                                      mwl8k_cmd_name(cmd->code,
2190                                                     buf, sizeof(buf)),
2191                                      ms);
2192         }
2193
2194         return rc;
2195 }
2196
2197 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2198                                  struct ieee80211_vif *vif,
2199                                  struct mwl8k_cmd_pkt *cmd)
2200 {
2201         if (vif != NULL)
2202                 cmd->macid = MWL8K_VIF(vif)->macid;
2203         return mwl8k_post_cmd(hw, cmd);
2204 }
2205
2206 /*
2207  * Setup code shared between STA and AP firmware images.
2208  */
2209 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2210 {
2211         struct mwl8k_priv *priv = hw->priv;
2212
2213         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2214         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2215
2216         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2217         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2218
2219         priv->band_24.band = IEEE80211_BAND_2GHZ;
2220         priv->band_24.channels = priv->channels_24;
2221         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2222         priv->band_24.bitrates = priv->rates_24;
2223         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2224
2225         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2226 }
2227
2228 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2229 {
2230         struct mwl8k_priv *priv = hw->priv;
2231
2232         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2233         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2234
2235         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2236         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2237
2238         priv->band_50.band = IEEE80211_BAND_5GHZ;
2239         priv->band_50.channels = priv->channels_50;
2240         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2241         priv->band_50.bitrates = priv->rates_50;
2242         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2243
2244         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2245 }
2246
2247 /*
2248  * CMD_GET_HW_SPEC (STA version).
2249  */
2250 struct mwl8k_cmd_get_hw_spec_sta {
2251         struct mwl8k_cmd_pkt header;
2252         __u8 hw_rev;
2253         __u8 host_interface;
2254         __le16 num_mcaddrs;
2255         __u8 perm_addr[ETH_ALEN];
2256         __le16 region_code;
2257         __le32 fw_rev;
2258         __le32 ps_cookie;
2259         __le32 caps;
2260         __u8 mcs_bitmap[16];
2261         __le32 rx_queue_ptr;
2262         __le32 num_tx_queues;
2263         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2264         __le32 caps2;
2265         __le32 num_tx_desc_per_queue;
2266         __le32 total_rxd;
2267 } __packed;
2268
2269 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2270 #define MWL8K_CAP_GREENFIELD            0x08000000
2271 #define MWL8K_CAP_AMPDU                 0x04000000
2272 #define MWL8K_CAP_RX_STBC               0x01000000
2273 #define MWL8K_CAP_TX_STBC               0x00800000
2274 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2275 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2276 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2277 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2278 #define MWL8K_CAP_DELAY_BA              0x00003000
2279 #define MWL8K_CAP_MIMO                  0x00000200
2280 #define MWL8K_CAP_40MHZ                 0x00000100
2281 #define MWL8K_CAP_BAND_MASK             0x00000007
2282 #define MWL8K_CAP_5GHZ                  0x00000004
2283 #define MWL8K_CAP_2GHZ4                 0x00000001
2284
2285 static void
2286 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2287                   struct ieee80211_supported_band *band, u32 cap)
2288 {
2289         int rx_streams;
2290         int tx_streams;
2291
2292         band->ht_cap.ht_supported = 1;
2293
2294         if (cap & MWL8K_CAP_MAX_AMSDU)
2295                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2296         if (cap & MWL8K_CAP_GREENFIELD)
2297                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2298         if (cap & MWL8K_CAP_AMPDU) {
2299                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2300                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2301                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2302         }
2303         if (cap & MWL8K_CAP_RX_STBC)
2304                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2305         if (cap & MWL8K_CAP_TX_STBC)
2306                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2307         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2308                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2309         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2310                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2311         if (cap & MWL8K_CAP_DELAY_BA)
2312                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2313         if (cap & MWL8K_CAP_40MHZ)
2314                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2315
2316         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2317         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2318
2319         band->ht_cap.mcs.rx_mask[0] = 0xff;
2320         if (rx_streams >= 2)
2321                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2322         if (rx_streams >= 3)
2323                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2324         band->ht_cap.mcs.rx_mask[4] = 0x01;
2325         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2326
2327         if (rx_streams != tx_streams) {
2328                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2329                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2330                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2331         }
2332 }
2333
2334 static void
2335 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2336 {
2337         struct mwl8k_priv *priv = hw->priv;
2338
2339         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2340                 mwl8k_setup_2ghz_band(hw);
2341                 if (caps & MWL8K_CAP_MIMO)
2342                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2343         }
2344
2345         if (caps & MWL8K_CAP_5GHZ) {
2346                 mwl8k_setup_5ghz_band(hw);
2347                 if (caps & MWL8K_CAP_MIMO)
2348                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2349         }
2350 }
2351
2352 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2353 {
2354         struct mwl8k_priv *priv = hw->priv;
2355         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2356         int rc;
2357         int i;
2358
2359         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2360         if (cmd == NULL)
2361                 return -ENOMEM;
2362
2363         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2364         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2365
2366         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2367         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2368         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2369         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2370         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2371                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2372         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2373         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2374
2375         rc = mwl8k_post_cmd(hw, &cmd->header);
2376
2377         if (!rc) {
2378                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2379                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2380                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2381                 priv->hw_rev = cmd->hw_rev;
2382                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2383                 priv->ap_macids_supported = 0x00000000;
2384                 priv->sta_macids_supported = 0x00000001;
2385         }
2386
2387         kfree(cmd);
2388         return rc;
2389 }
2390
2391 /*
2392  * CMD_GET_HW_SPEC (AP version).
2393  */
2394 struct mwl8k_cmd_get_hw_spec_ap {
2395         struct mwl8k_cmd_pkt header;
2396         __u8 hw_rev;
2397         __u8 host_interface;
2398         __le16 num_wcb;
2399         __le16 num_mcaddrs;
2400         __u8 perm_addr[ETH_ALEN];
2401         __le16 region_code;
2402         __le16 num_antenna;
2403         __le32 fw_rev;
2404         __le32 wcbbase0;
2405         __le32 rxwrptr;
2406         __le32 rxrdptr;
2407         __le32 ps_cookie;
2408         __le32 wcbbase1;
2409         __le32 wcbbase2;
2410         __le32 wcbbase3;
2411         __le32 fw_api_version;
2412         __le32 caps;
2413         __le32 num_of_ampdu_queues;
2414         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2415 } __packed;
2416
2417 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2418 {
2419         struct mwl8k_priv *priv = hw->priv;
2420         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2421         int rc, i;
2422         u32 api_version;
2423
2424         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2425         if (cmd == NULL)
2426                 return -ENOMEM;
2427
2428         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2429         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2430
2431         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2432         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2433
2434         rc = mwl8k_post_cmd(hw, &cmd->header);
2435
2436         if (!rc) {
2437                 int off;
2438
2439                 api_version = le32_to_cpu(cmd->fw_api_version);
2440                 if (priv->device_info->fw_api_ap != api_version) {
2441                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2442                                "  Expected %d got %d.\n", MWL8K_NAME,
2443                                priv->device_info->part_name,
2444                                priv->device_info->fw_api_ap,
2445                                api_version);
2446                         rc = -EINVAL;
2447                         goto done;
2448                 }
2449                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2450                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2451                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2452                 priv->hw_rev = cmd->hw_rev;
2453                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2454                 priv->ap_macids_supported = 0x000000ff;
2455                 priv->sta_macids_supported = 0x00000000;
2456                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2457                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2458                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2459                                    " but we only support %d.\n",
2460                                    priv->num_ampdu_queues,
2461                                    MWL8K_MAX_AMPDU_QUEUES);
2462                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2463                 }
2464                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2465                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2466
2467                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2468                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2469
2470                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2471                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2472                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2473                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2474
2475                 for (i = 0; i < priv->num_ampdu_queues; i++)
2476                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2477                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2478         }
2479
2480 done:
2481         kfree(cmd);
2482         return rc;
2483 }
2484
2485 /*
2486  * CMD_SET_HW_SPEC.
2487  */
2488 struct mwl8k_cmd_set_hw_spec {
2489         struct mwl8k_cmd_pkt header;
2490         __u8 hw_rev;
2491         __u8 host_interface;
2492         __le16 num_mcaddrs;
2493         __u8 perm_addr[ETH_ALEN];
2494         __le16 region_code;
2495         __le32 fw_rev;
2496         __le32 ps_cookie;
2497         __le32 caps;
2498         __le32 rx_queue_ptr;
2499         __le32 num_tx_queues;
2500         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2501         __le32 flags;
2502         __le32 num_tx_desc_per_queue;
2503         __le32 total_rxd;
2504 } __packed;
2505
2506 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2507  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2508  * the packets that are queued for more than 500ms, will be dropped in the
2509  * hardware. This helps minimizing the issues caused due to head-of-line
2510  * blocking where a slow client can hog the bandwidth and affect traffic to a
2511  * faster client.
2512  */
2513 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2514 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2515 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2516 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2517 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2518
2519 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2520 {
2521         struct mwl8k_priv *priv = hw->priv;
2522         struct mwl8k_cmd_set_hw_spec *cmd;
2523         int rc;
2524         int i;
2525
2526         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2527         if (cmd == NULL)
2528                 return -ENOMEM;
2529
2530         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2531         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2532
2533         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2534         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2535         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2536
2537         /*
2538          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2539          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2540          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2541          * priority is interpreted the right way in firmware.
2542          */
2543         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2544                 int j = mwl8k_tx_queues(priv) - 1 - i;
2545                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2546         }
2547
2548         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2549                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2550                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2551                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2552                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2553         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2554         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2555
2556         rc = mwl8k_post_cmd(hw, &cmd->header);
2557         kfree(cmd);
2558
2559         return rc;
2560 }
2561
2562 /*
2563  * CMD_MAC_MULTICAST_ADR.
2564  */
2565 struct mwl8k_cmd_mac_multicast_adr {
2566         struct mwl8k_cmd_pkt header;
2567         __le16 action;
2568         __le16 numaddr;
2569         __u8 addr[0][ETH_ALEN];
2570 };
2571
2572 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2573 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2574 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2575 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2576
2577 static struct mwl8k_cmd_pkt *
2578 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2579                               struct netdev_hw_addr_list *mc_list)
2580 {
2581         struct mwl8k_priv *priv = hw->priv;
2582         struct mwl8k_cmd_mac_multicast_adr *cmd;
2583         int size;
2584         int mc_count = 0;
2585
2586         if (mc_list)
2587                 mc_count = netdev_hw_addr_list_count(mc_list);
2588
2589         if (allmulti || mc_count > priv->num_mcaddrs) {
2590                 allmulti = 1;
2591                 mc_count = 0;
2592         }
2593
2594         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2595
2596         cmd = kzalloc(size, GFP_ATOMIC);
2597         if (cmd == NULL)
2598                 return NULL;
2599
2600         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2601         cmd->header.length = cpu_to_le16(size);
2602         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2603                                   MWL8K_ENABLE_RX_BROADCAST);
2604
2605         if (allmulti) {
2606                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2607         } else if (mc_count) {
2608                 struct netdev_hw_addr *ha;
2609                 int i = 0;
2610
2611                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2612                 cmd->numaddr = cpu_to_le16(mc_count);
2613                 netdev_hw_addr_list_for_each(ha, mc_list) {
2614                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2615                 }
2616         }
2617
2618         return &cmd->header;
2619 }
2620
2621 /*
2622  * CMD_GET_STAT.
2623  */
2624 struct mwl8k_cmd_get_stat {
2625         struct mwl8k_cmd_pkt header;
2626         __le32 stats[64];
2627 } __packed;
2628
2629 #define MWL8K_STAT_ACK_FAILURE  9
2630 #define MWL8K_STAT_RTS_FAILURE  12
2631 #define MWL8K_STAT_FCS_ERROR    24
2632 #define MWL8K_STAT_RTS_SUCCESS  11
2633
2634 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2635                               struct ieee80211_low_level_stats *stats)
2636 {
2637         struct mwl8k_cmd_get_stat *cmd;
2638         int rc;
2639
2640         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2641         if (cmd == NULL)
2642                 return -ENOMEM;
2643
2644         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2645         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2646
2647         rc = mwl8k_post_cmd(hw, &cmd->header);
2648         if (!rc) {
2649                 stats->dot11ACKFailureCount =
2650                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2651                 stats->dot11RTSFailureCount =
2652                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2653                 stats->dot11FCSErrorCount =
2654                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2655                 stats->dot11RTSSuccessCount =
2656                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2657         }
2658         kfree(cmd);
2659
2660         return rc;
2661 }
2662
2663 /*
2664  * CMD_RADIO_CONTROL.
2665  */
2666 struct mwl8k_cmd_radio_control {
2667         struct mwl8k_cmd_pkt header;
2668         __le16 action;
2669         __le16 control;
2670         __le16 radio_on;
2671 } __packed;
2672
2673 static int
2674 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2675 {
2676         struct mwl8k_priv *priv = hw->priv;
2677         struct mwl8k_cmd_radio_control *cmd;
2678         int rc;
2679
2680         if (enable == priv->radio_on && !force)
2681                 return 0;
2682
2683         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2684         if (cmd == NULL)
2685                 return -ENOMEM;
2686
2687         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2688         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2689         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2690         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2691         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2692
2693         rc = mwl8k_post_cmd(hw, &cmd->header);
2694         kfree(cmd);
2695
2696         if (!rc)
2697                 priv->radio_on = enable;
2698
2699         return rc;
2700 }
2701
2702 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2703 {
2704         return mwl8k_cmd_radio_control(hw, 0, 0);
2705 }
2706
2707 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2708 {
2709         return mwl8k_cmd_radio_control(hw, 1, 0);
2710 }
2711
2712 static int
2713 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2714 {
2715         struct mwl8k_priv *priv = hw->priv;
2716
2717         priv->radio_short_preamble = short_preamble;
2718
2719         return mwl8k_cmd_radio_control(hw, 1, 1);
2720 }
2721
2722 /*
2723  * CMD_RF_TX_POWER.
2724  */
2725 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2726
2727 struct mwl8k_cmd_rf_tx_power {
2728         struct mwl8k_cmd_pkt header;
2729         __le16 action;
2730         __le16 support_level;
2731         __le16 current_level;
2732         __le16 reserved;
2733         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2734 } __packed;
2735
2736 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2737 {
2738         struct mwl8k_cmd_rf_tx_power *cmd;
2739         int rc;
2740
2741         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2742         if (cmd == NULL)
2743                 return -ENOMEM;
2744
2745         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2746         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2747         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2748         cmd->support_level = cpu_to_le16(dBm);
2749
2750         rc = mwl8k_post_cmd(hw, &cmd->header);
2751         kfree(cmd);
2752
2753         return rc;
2754 }
2755
2756 /*
2757  * CMD_TX_POWER.
2758  */
2759 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2760
2761 struct mwl8k_cmd_tx_power {
2762         struct mwl8k_cmd_pkt header;
2763         __le16 action;
2764         __le16 band;
2765         __le16 channel;
2766         __le16 bw;
2767         __le16 sub_ch;
2768         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2769 } __packed;
2770
2771 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2772                                      struct ieee80211_conf *conf,
2773                                      unsigned short pwr)
2774 {
2775         struct ieee80211_channel *channel = conf->channel;
2776         struct mwl8k_cmd_tx_power *cmd;
2777         int rc;
2778         int i;
2779
2780         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2781         if (cmd == NULL)
2782                 return -ENOMEM;
2783
2784         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2785         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2786         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2787
2788         if (channel->band == IEEE80211_BAND_2GHZ)
2789                 cmd->band = cpu_to_le16(0x1);
2790         else if (channel->band == IEEE80211_BAND_5GHZ)
2791                 cmd->band = cpu_to_le16(0x4);
2792
2793         cmd->channel = cpu_to_le16(channel->hw_value);
2794
2795         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2796             conf->channel_type == NL80211_CHAN_HT20) {
2797                 cmd->bw = cpu_to_le16(0x2);
2798         } else {
2799                 cmd->bw = cpu_to_le16(0x4);
2800                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2801                         cmd->sub_ch = cpu_to_le16(0x3);
2802                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2803                         cmd->sub_ch = cpu_to_le16(0x1);
2804         }
2805
2806         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2807                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2808
2809         rc = mwl8k_post_cmd(hw, &cmd->header);
2810         kfree(cmd);
2811
2812         return rc;
2813 }
2814
2815 /*
2816  * CMD_RF_ANTENNA.
2817  */
2818 struct mwl8k_cmd_rf_antenna {
2819         struct mwl8k_cmd_pkt header;
2820         __le16 antenna;
2821         __le16 mode;
2822 } __packed;
2823
2824 #define MWL8K_RF_ANTENNA_RX             1
2825 #define MWL8K_RF_ANTENNA_TX             2
2826
2827 static int
2828 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2829 {
2830         struct mwl8k_cmd_rf_antenna *cmd;
2831         int rc;
2832
2833         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2834         if (cmd == NULL)
2835                 return -ENOMEM;
2836
2837         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2838         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2839         cmd->antenna = cpu_to_le16(antenna);
2840         cmd->mode = cpu_to_le16(mask);
2841
2842         rc = mwl8k_post_cmd(hw, &cmd->header);
2843         kfree(cmd);
2844
2845         return rc;
2846 }
2847
2848 /*
2849  * CMD_SET_BEACON.
2850  */
2851 struct mwl8k_cmd_set_beacon {
2852         struct mwl8k_cmd_pkt header;
2853         __le16 beacon_len;
2854         __u8 beacon[0];
2855 };
2856
2857 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2858                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2859 {
2860         struct mwl8k_cmd_set_beacon *cmd;
2861         int rc;
2862
2863         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2864         if (cmd == NULL)
2865                 return -ENOMEM;
2866
2867         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2868         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2869         cmd->beacon_len = cpu_to_le16(len);
2870         memcpy(cmd->beacon, beacon, len);
2871
2872         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2873         kfree(cmd);
2874
2875         return rc;
2876 }
2877
2878 /*
2879  * CMD_SET_PRE_SCAN.
2880  */
2881 struct mwl8k_cmd_set_pre_scan {
2882         struct mwl8k_cmd_pkt header;
2883 } __packed;
2884
2885 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2886 {
2887         struct mwl8k_cmd_set_pre_scan *cmd;
2888         int rc;
2889
2890         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2891         if (cmd == NULL)
2892                 return -ENOMEM;
2893
2894         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2895         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2896
2897         rc = mwl8k_post_cmd(hw, &cmd->header);
2898         kfree(cmd);
2899
2900         return rc;
2901 }
2902
2903 /*
2904  * CMD_SET_POST_SCAN.
2905  */
2906 struct mwl8k_cmd_set_post_scan {
2907         struct mwl8k_cmd_pkt header;
2908         __le32 isibss;
2909         __u8 bssid[ETH_ALEN];
2910 } __packed;
2911
2912 static int
2913 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2914 {
2915         struct mwl8k_cmd_set_post_scan *cmd;
2916         int rc;
2917
2918         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2919         if (cmd == NULL)
2920                 return -ENOMEM;
2921
2922         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2923         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2924         cmd->isibss = 0;
2925         memcpy(cmd->bssid, mac, ETH_ALEN);
2926
2927         rc = mwl8k_post_cmd(hw, &cmd->header);
2928         kfree(cmd);
2929
2930         return rc;
2931 }
2932
2933 /*
2934  * CMD_SET_RF_CHANNEL.
2935  */
2936 struct mwl8k_cmd_set_rf_channel {
2937         struct mwl8k_cmd_pkt header;
2938         __le16 action;
2939         __u8 current_channel;
2940         __le32 channel_flags;
2941 } __packed;
2942
2943 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2944                                     struct ieee80211_conf *conf)
2945 {
2946         struct ieee80211_channel *channel = conf->channel;
2947         struct mwl8k_cmd_set_rf_channel *cmd;
2948         int rc;
2949
2950         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2951         if (cmd == NULL)
2952                 return -ENOMEM;
2953
2954         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2955         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2956         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2957         cmd->current_channel = channel->hw_value;
2958
2959         if (channel->band == IEEE80211_BAND_2GHZ)
2960                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2961         else if (channel->band == IEEE80211_BAND_5GHZ)
2962                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2963
2964         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2965             conf->channel_type == NL80211_CHAN_HT20)
2966                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2967         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2968                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2969         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2970                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2971
2972         rc = mwl8k_post_cmd(hw, &cmd->header);
2973         kfree(cmd);
2974
2975         return rc;
2976 }
2977
2978 /*
2979  * CMD_SET_AID.
2980  */
2981 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2982 #define MWL8K_FRAME_PROT_11G                            0x07
2983 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2984 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2985
2986 struct mwl8k_cmd_update_set_aid {
2987         struct  mwl8k_cmd_pkt header;
2988         __le16  aid;
2989
2990          /* AP's MAC address (BSSID) */
2991         __u8    bssid[ETH_ALEN];
2992         __le16  protection_mode;
2993         __u8    supp_rates[14];
2994 } __packed;
2995
2996 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2997 {
2998         int i;
2999         int j;
3000
3001         /*
3002          * Clear nonstandard rates 4 and 13.
3003          */
3004         mask &= 0x1fef;
3005
3006         for (i = 0, j = 0; i < 14; i++) {
3007                 if (mask & (1 << i))
3008                         rates[j++] = mwl8k_rates_24[i].hw_value;
3009         }
3010 }
3011
3012 static int
3013 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3014                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3015 {
3016         struct mwl8k_cmd_update_set_aid *cmd;
3017         u16 prot_mode;
3018         int rc;
3019
3020         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3021         if (cmd == NULL)
3022                 return -ENOMEM;
3023
3024         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3025         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3026         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3027         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3028
3029         if (vif->bss_conf.use_cts_prot) {
3030                 prot_mode = MWL8K_FRAME_PROT_11G;
3031         } else {
3032                 switch (vif->bss_conf.ht_operation_mode &
3033                         IEEE80211_HT_OP_MODE_PROTECTION) {
3034                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3035                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3036                         break;
3037                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3038                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3039                         break;
3040                 default:
3041                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3042                         break;
3043                 }
3044         }
3045         cmd->protection_mode = cpu_to_le16(prot_mode);
3046
3047         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3048
3049         rc = mwl8k_post_cmd(hw, &cmd->header);
3050         kfree(cmd);
3051
3052         return rc;
3053 }
3054
3055 /*
3056  * CMD_SET_RATE.
3057  */
3058 struct mwl8k_cmd_set_rate {
3059         struct  mwl8k_cmd_pkt header;
3060         __u8    legacy_rates[14];
3061
3062         /* Bitmap for supported MCS codes.  */
3063         __u8    mcs_set[16];
3064         __u8    reserved[16];
3065 } __packed;
3066
3067 static int
3068 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3069                    u32 legacy_rate_mask, u8 *mcs_rates)
3070 {
3071         struct mwl8k_cmd_set_rate *cmd;
3072         int rc;
3073
3074         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3075         if (cmd == NULL)
3076                 return -ENOMEM;
3077
3078         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3079         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3080         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3081         memcpy(cmd->mcs_set, mcs_rates, 16);
3082
3083         rc = mwl8k_post_cmd(hw, &cmd->header);
3084         kfree(cmd);
3085
3086         return rc;
3087 }
3088
3089 /*
3090  * CMD_FINALIZE_JOIN.
3091  */
3092 #define MWL8K_FJ_BEACON_MAXLEN  128
3093
3094 struct mwl8k_cmd_finalize_join {
3095         struct mwl8k_cmd_pkt header;
3096         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3097         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3098 } __packed;
3099
3100 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3101                                    int framelen, int dtim)
3102 {
3103         struct mwl8k_cmd_finalize_join *cmd;
3104         struct ieee80211_mgmt *payload = frame;
3105         int payload_len;
3106         int rc;
3107
3108         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3109         if (cmd == NULL)
3110                 return -ENOMEM;
3111
3112         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3113         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3114         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3115
3116         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3117         if (payload_len < 0)
3118                 payload_len = 0;
3119         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3120                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3121
3122         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3123
3124         rc = mwl8k_post_cmd(hw, &cmd->header);
3125         kfree(cmd);
3126
3127         return rc;
3128 }
3129
3130 /*
3131  * CMD_SET_RTS_THRESHOLD.
3132  */
3133 struct mwl8k_cmd_set_rts_threshold {
3134         struct mwl8k_cmd_pkt header;
3135         __le16 action;
3136         __le16 threshold;
3137 } __packed;
3138
3139 static int
3140 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3141 {
3142         struct mwl8k_cmd_set_rts_threshold *cmd;
3143         int rc;
3144
3145         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3146         if (cmd == NULL)
3147                 return -ENOMEM;
3148
3149         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3150         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3151         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3152         cmd->threshold = cpu_to_le16(rts_thresh);
3153
3154         rc = mwl8k_post_cmd(hw, &cmd->header);
3155         kfree(cmd);
3156
3157         return rc;
3158 }
3159
3160 /*
3161  * CMD_SET_SLOT.
3162  */
3163 struct mwl8k_cmd_set_slot {
3164         struct mwl8k_cmd_pkt header;
3165         __le16 action;
3166         __u8 short_slot;
3167 } __packed;
3168
3169 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3170 {
3171         struct mwl8k_cmd_set_slot *cmd;
3172         int rc;
3173
3174         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3175         if (cmd == NULL)
3176                 return -ENOMEM;
3177
3178         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3179         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3180         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3181         cmd->short_slot = short_slot_time;
3182
3183         rc = mwl8k_post_cmd(hw, &cmd->header);
3184         kfree(cmd);
3185
3186         return rc;
3187 }
3188
3189 /*
3190  * CMD_SET_EDCA_PARAMS.
3191  */
3192 struct mwl8k_cmd_set_edca_params {
3193         struct mwl8k_cmd_pkt header;
3194
3195         /* See MWL8K_SET_EDCA_XXX below */
3196         __le16 action;
3197
3198         /* TX opportunity in units of 32 us */
3199         __le16 txop;
3200
3201         union {
3202                 struct {
3203                         /* Log exponent of max contention period: 0...15 */
3204                         __le32 log_cw_max;
3205
3206                         /* Log exponent of min contention period: 0...15 */
3207                         __le32 log_cw_min;
3208
3209                         /* Adaptive interframe spacing in units of 32us */
3210                         __u8 aifs;
3211
3212                         /* TX queue to configure */
3213                         __u8 txq;
3214                 } ap;
3215                 struct {
3216                         /* Log exponent of max contention period: 0...15 */
3217                         __u8 log_cw_max;
3218
3219                         /* Log exponent of min contention period: 0...15 */
3220                         __u8 log_cw_min;
3221
3222                         /* Adaptive interframe spacing in units of 32us */
3223                         __u8 aifs;
3224
3225                         /* TX queue to configure */
3226                         __u8 txq;
3227                 } sta;
3228         };
3229 } __packed;
3230
3231 #define MWL8K_SET_EDCA_CW       0x01
3232 #define MWL8K_SET_EDCA_TXOP     0x02
3233 #define MWL8K_SET_EDCA_AIFS     0x04
3234
3235 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3236                                  MWL8K_SET_EDCA_TXOP | \
3237                                  MWL8K_SET_EDCA_AIFS)
3238
3239 static int
3240 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3241                           __u16 cw_min, __u16 cw_max,
3242                           __u8 aifs, __u16 txop)
3243 {
3244         struct mwl8k_priv *priv = hw->priv;
3245         struct mwl8k_cmd_set_edca_params *cmd;
3246         int rc;
3247
3248         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3249         if (cmd == NULL)
3250                 return -ENOMEM;
3251
3252         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3253         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3254         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3255         cmd->txop = cpu_to_le16(txop);
3256         if (priv->ap_fw) {
3257                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3258                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3259                 cmd->ap.aifs = aifs;
3260                 cmd->ap.txq = qnum;
3261         } else {
3262                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3263                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3264                 cmd->sta.aifs = aifs;
3265                 cmd->sta.txq = qnum;
3266         }
3267
3268         rc = mwl8k_post_cmd(hw, &cmd->header);
3269         kfree(cmd);
3270
3271         return rc;
3272 }
3273
3274 /*
3275  * CMD_SET_WMM_MODE.
3276  */
3277 struct mwl8k_cmd_set_wmm_mode {
3278         struct mwl8k_cmd_pkt header;
3279         __le16 action;
3280 } __packed;
3281
3282 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3283 {
3284         struct mwl8k_priv *priv = hw->priv;
3285         struct mwl8k_cmd_set_wmm_mode *cmd;
3286         int rc;
3287
3288         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3289         if (cmd == NULL)
3290                 return -ENOMEM;
3291
3292         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3293         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3294         cmd->action = cpu_to_le16(!!enable);
3295
3296         rc = mwl8k_post_cmd(hw, &cmd->header);
3297         kfree(cmd);
3298
3299         if (!rc)
3300                 priv->wmm_enabled = enable;
3301
3302         return rc;
3303 }
3304
3305 /*
3306  * CMD_MIMO_CONFIG.
3307  */
3308 struct mwl8k_cmd_mimo_config {
3309         struct mwl8k_cmd_pkt header;
3310         __le32 action;
3311         __u8 rx_antenna_map;
3312         __u8 tx_antenna_map;
3313 } __packed;
3314
3315 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3316 {
3317         struct mwl8k_cmd_mimo_config *cmd;
3318         int rc;
3319
3320         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3321         if (cmd == NULL)
3322                 return -ENOMEM;
3323
3324         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3325         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3326         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3327         cmd->rx_antenna_map = rx;
3328         cmd->tx_antenna_map = tx;
3329
3330         rc = mwl8k_post_cmd(hw, &cmd->header);
3331         kfree(cmd);
3332
3333         return rc;
3334 }
3335
3336 /*
3337  * CMD_USE_FIXED_RATE (STA version).
3338  */
3339 struct mwl8k_cmd_use_fixed_rate_sta {
3340         struct mwl8k_cmd_pkt header;
3341         __le32 action;
3342         __le32 allow_rate_drop;
3343         __le32 num_rates;
3344         struct {
3345                 __le32 is_ht_rate;
3346                 __le32 enable_retry;
3347                 __le32 rate;
3348                 __le32 retry_count;
3349         } rate_entry[8];
3350         __le32 rate_type;
3351         __le32 reserved1;
3352         __le32 reserved2;
3353 } __packed;
3354
3355 #define MWL8K_USE_AUTO_RATE     0x0002
3356 #define MWL8K_UCAST_RATE        0
3357
3358 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3359 {
3360         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3361         int rc;
3362
3363         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3364         if (cmd == NULL)
3365                 return -ENOMEM;
3366
3367         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3368         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3369         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3370         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3371
3372         rc = mwl8k_post_cmd(hw, &cmd->header);
3373         kfree(cmd);
3374
3375         return rc;
3376 }
3377
3378 /*
3379  * CMD_USE_FIXED_RATE (AP version).
3380  */
3381 struct mwl8k_cmd_use_fixed_rate_ap {
3382         struct mwl8k_cmd_pkt header;
3383         __le32 action;
3384         __le32 allow_rate_drop;
3385         __le32 num_rates;
3386         struct mwl8k_rate_entry_ap {
3387                 __le32 is_ht_rate;
3388                 __le32 enable_retry;
3389                 __le32 rate;
3390                 __le32 retry_count;
3391         } rate_entry[4];
3392         u8 multicast_rate;
3393         u8 multicast_rate_type;
3394         u8 management_rate;
3395 } __packed;
3396
3397 static int
3398 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3399 {
3400         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3401         int rc;
3402
3403         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3404         if (cmd == NULL)
3405                 return -ENOMEM;
3406
3407         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3408         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3409         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3410         cmd->multicast_rate = mcast;
3411         cmd->management_rate = mgmt;
3412
3413         rc = mwl8k_post_cmd(hw, &cmd->header);
3414         kfree(cmd);
3415
3416         return rc;
3417 }
3418
3419 /*
3420  * CMD_ENABLE_SNIFFER.
3421  */
3422 struct mwl8k_cmd_enable_sniffer {
3423         struct mwl8k_cmd_pkt header;
3424         __le32 action;
3425 } __packed;
3426
3427 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3428 {
3429         struct mwl8k_cmd_enable_sniffer *cmd;
3430         int rc;
3431
3432         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3433         if (cmd == NULL)
3434                 return -ENOMEM;
3435
3436         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3437         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3438         cmd->action = cpu_to_le32(!!enable);
3439
3440         rc = mwl8k_post_cmd(hw, &cmd->header);
3441         kfree(cmd);
3442
3443         return rc;
3444 }
3445
3446 struct mwl8k_cmd_update_mac_addr {
3447         struct mwl8k_cmd_pkt header;
3448         union {
3449                 struct {
3450                         __le16 mac_type;
3451                         __u8 mac_addr[ETH_ALEN];
3452                 } mbss;
3453                 __u8 mac_addr[ETH_ALEN];
3454         };
3455 } __packed;
3456
3457 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3458 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3459 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3460 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3461
3462 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3463                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3464 {
3465         struct mwl8k_priv *priv = hw->priv;
3466         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3467         struct mwl8k_cmd_update_mac_addr *cmd;
3468         int mac_type;
3469         int rc;
3470
3471         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3472         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3473                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3474                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3475                 else
3476                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3477         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3478                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3479                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3480                 else
3481                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3482         }
3483
3484         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3485         if (cmd == NULL)
3486                 return -ENOMEM;
3487
3488         if (set)
3489                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3490         else
3491                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3492
3493         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3494         if (priv->ap_fw) {
3495                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3496                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3497         } else {
3498                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3499         }
3500
3501         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3502         kfree(cmd);
3503
3504         return rc;
3505 }
3506
3507 /*
3508  * MWL8K_CMD_SET_MAC_ADDR.
3509  */
3510 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3511                                   struct ieee80211_vif *vif, u8 *mac)
3512 {
3513         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3514 }
3515
3516 /*
3517  * MWL8K_CMD_DEL_MAC_ADDR.
3518  */
3519 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3520                                   struct ieee80211_vif *vif, u8 *mac)
3521 {
3522         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3523 }
3524
3525 /*
3526  * CMD_SET_RATEADAPT_MODE.
3527  */
3528 struct mwl8k_cmd_set_rate_adapt_mode {
3529         struct mwl8k_cmd_pkt header;
3530         __le16 action;
3531         __le16 mode;
3532 } __packed;
3533
3534 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3535 {
3536         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3537         int rc;
3538
3539         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3540         if (cmd == NULL)
3541                 return -ENOMEM;
3542
3543         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3544         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3545         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3546         cmd->mode = cpu_to_le16(mode);
3547
3548         rc = mwl8k_post_cmd(hw, &cmd->header);
3549         kfree(cmd);
3550
3551         return rc;
3552 }
3553
3554 /*
3555  * CMD_GET_WATCHDOG_BITMAP.
3556  */
3557 struct mwl8k_cmd_get_watchdog_bitmap {
3558         struct mwl8k_cmd_pkt header;
3559         u8      bitmap;
3560 } __packed;
3561
3562 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3563 {
3564         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3565         int rc;
3566
3567         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3568         if (cmd == NULL)
3569                 return -ENOMEM;
3570
3571         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3572         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3573
3574         rc = mwl8k_post_cmd(hw, &cmd->header);
3575         if (!rc)
3576                 *bitmap = cmd->bitmap;
3577
3578         kfree(cmd);
3579
3580         return rc;
3581 }
3582
3583 #define INVALID_BA      0xAA
3584 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3585 {
3586         int rc;
3587         u8 bitmap = 0, stream_index;
3588         struct mwl8k_ampdu_stream *streams;
3589         struct mwl8k_priv *priv =
3590                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3591
3592         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3593         if (rc)
3594                 return;
3595
3596         if (bitmap == INVALID_BA)
3597                 return;
3598
3599         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3600         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3601
3602         BUG_ON(stream_index >= priv->num_ampdu_queues);
3603
3604         streams = &priv->ampdu[stream_index];
3605
3606         if (streams->state == AMPDU_STREAM_ACTIVE)
3607                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3608
3609         return;
3610 }
3611
3612
3613 /*
3614  * CMD_BSS_START.
3615  */
3616 struct mwl8k_cmd_bss_start {
3617         struct mwl8k_cmd_pkt header;
3618         __le32 enable;
3619 } __packed;
3620
3621 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3622                                struct ieee80211_vif *vif, int enable)
3623 {
3624         struct mwl8k_cmd_bss_start *cmd;
3625         int rc;
3626
3627         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3628         if (cmd == NULL)
3629                 return -ENOMEM;
3630
3631         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3632         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3633         cmd->enable = cpu_to_le32(enable);
3634
3635         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3636         kfree(cmd);
3637
3638         return rc;
3639 }
3640
3641 /*
3642  * CMD_BASTREAM.
3643  */
3644
3645 /*
3646  * UPSTREAM is tx direction
3647  */
3648 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3649 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3650
3651 enum ba_stream_action_type {
3652         MWL8K_BA_CREATE,
3653         MWL8K_BA_UPDATE,
3654         MWL8K_BA_DESTROY,
3655         MWL8K_BA_FLUSH,
3656         MWL8K_BA_CHECK,
3657 };
3658
3659
3660 struct mwl8k_create_ba_stream {
3661         __le32  flags;
3662         __le32  idle_thrs;
3663         __le32  bar_thrs;
3664         __le32  window_size;
3665         u8      peer_mac_addr[6];
3666         u8      dialog_token;
3667         u8      tid;
3668         u8      queue_id;
3669         u8      param_info;
3670         __le32  ba_context;
3671         u8      reset_seq_no_flag;
3672         __le16  curr_seq_no;
3673         u8      sta_src_mac_addr[6];
3674 } __packed;
3675
3676 struct mwl8k_destroy_ba_stream {
3677         __le32  flags;
3678         __le32  ba_context;
3679 } __packed;
3680
3681 struct mwl8k_cmd_bastream {
3682         struct mwl8k_cmd_pkt    header;
3683         __le32  action;
3684         union {
3685                 struct mwl8k_create_ba_stream   create_params;
3686                 struct mwl8k_destroy_ba_stream  destroy_params;
3687         };
3688 } __packed;
3689
3690 static int
3691 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3692                struct ieee80211_vif *vif)
3693 {
3694         struct mwl8k_cmd_bastream *cmd;
3695         int rc;
3696
3697         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3698         if (cmd == NULL)
3699                 return -ENOMEM;
3700
3701         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3702         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3703
3704         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3705
3706         cmd->create_params.queue_id = stream->idx;
3707         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3708                ETH_ALEN);
3709         cmd->create_params.tid = stream->tid;
3710
3711         cmd->create_params.flags =
3712                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3713                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3714
3715         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3716
3717         kfree(cmd);
3718
3719         return rc;
3720 }
3721
3722 static int
3723 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3724                 u8 buf_size, struct ieee80211_vif *vif)
3725 {
3726         struct mwl8k_cmd_bastream *cmd;
3727         int rc;
3728
3729         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3730         if (cmd == NULL)
3731                 return -ENOMEM;
3732
3733
3734         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3735         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3736
3737         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3738
3739         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3740         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3741         cmd->create_params.queue_id = stream->idx;
3742
3743         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3744         cmd->create_params.tid = stream->tid;
3745         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3746         cmd->create_params.reset_seq_no_flag = 1;
3747
3748         cmd->create_params.param_info =
3749                 (stream->sta->ht_cap.ampdu_factor &
3750                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3751                 ((stream->sta->ht_cap.ampdu_density << 2) &
3752                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3753
3754         cmd->create_params.flags =
3755                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3756                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3757
3758         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3759
3760         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3761                 stream->sta->addr, stream->tid);
3762         kfree(cmd);
3763
3764         return rc;
3765 }
3766
3767 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3768                              struct mwl8k_ampdu_stream *stream)
3769 {
3770         struct mwl8k_cmd_bastream *cmd;
3771
3772         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3773         if (cmd == NULL)
3774                 return;
3775
3776         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3777         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3778         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3779
3780         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3781         mwl8k_post_cmd(hw, &cmd->header);
3782
3783         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3784
3785         kfree(cmd);
3786 }
3787
3788 /*
3789  * CMD_SET_NEW_STN.
3790  */
3791 struct mwl8k_cmd_set_new_stn {
3792         struct mwl8k_cmd_pkt header;
3793         __le16 aid;
3794         __u8 mac_addr[6];
3795         __le16 stn_id;
3796         __le16 action;
3797         __le16 rsvd;
3798         __le32 legacy_rates;
3799         __u8 ht_rates[4];
3800         __le16 cap_info;
3801         __le16 ht_capabilities_info;
3802         __u8 mac_ht_param_info;
3803         __u8 rev;
3804         __u8 control_channel;
3805         __u8 add_channel;
3806         __le16 op_mode;
3807         __le16 stbc;
3808         __u8 add_qos_info;
3809         __u8 is_qos_sta;
3810         __le32 fw_sta_ptr;
3811 } __packed;
3812
3813 #define MWL8K_STA_ACTION_ADD            0
3814 #define MWL8K_STA_ACTION_REMOVE         2
3815
3816 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3817                                      struct ieee80211_vif *vif,
3818                                      struct ieee80211_sta *sta)
3819 {
3820         struct mwl8k_cmd_set_new_stn *cmd;
3821         u32 rates;
3822         int rc;
3823
3824         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3825         if (cmd == NULL)
3826                 return -ENOMEM;
3827
3828         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3829         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3830         cmd->aid = cpu_to_le16(sta->aid);
3831         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3832         cmd->stn_id = cpu_to_le16(sta->aid);
3833         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3834         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3835                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3836         else
3837                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3838         cmd->legacy_rates = cpu_to_le32(rates);
3839         if (sta->ht_cap.ht_supported) {
3840                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3841                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3842                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3843                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3844                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3845                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3846                         ((sta->ht_cap.ampdu_density & 7) << 2);
3847                 cmd->is_qos_sta = 1;
3848         }
3849
3850         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3851         kfree(cmd);
3852
3853         return rc;
3854 }
3855
3856 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3857                                           struct ieee80211_vif *vif)
3858 {
3859         struct mwl8k_cmd_set_new_stn *cmd;
3860         int rc;
3861
3862         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3863         if (cmd == NULL)
3864                 return -ENOMEM;
3865
3866         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3867         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3868         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3869
3870         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3871         kfree(cmd);
3872
3873         return rc;
3874 }
3875
3876 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3877                                      struct ieee80211_vif *vif, u8 *addr)
3878 {
3879         struct mwl8k_cmd_set_new_stn *cmd;
3880         int rc;
3881
3882         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3883         if (cmd == NULL)
3884                 return -ENOMEM;
3885
3886         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3887         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3888         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3889         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3890
3891         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3892         kfree(cmd);
3893
3894         return rc;
3895 }
3896
3897 /*
3898  * CMD_UPDATE_ENCRYPTION.
3899  */
3900
3901 #define MAX_ENCR_KEY_LENGTH     16
3902 #define MIC_KEY_LENGTH          8
3903
3904 struct mwl8k_cmd_update_encryption {
3905         struct mwl8k_cmd_pkt header;
3906
3907         __le32 action;
3908         __le32 reserved;
3909         __u8 mac_addr[6];
3910         __u8 encr_type;
3911
3912 } __packed;
3913
3914 struct mwl8k_cmd_set_key {
3915         struct mwl8k_cmd_pkt header;
3916
3917         __le32 action;
3918         __le32 reserved;
3919         __le16 length;
3920         __le16 key_type_id;
3921         __le32 key_info;
3922         __le32 key_id;
3923         __le16 key_len;
3924         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3925         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3926         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3927         __le16 tkip_rsc_low;
3928         __le32 tkip_rsc_high;
3929         __le16 tkip_tsc_low;
3930         __le32 tkip_tsc_high;
3931         __u8 mac_addr[6];
3932 } __packed;
3933
3934 enum {
3935         MWL8K_ENCR_ENABLE,
3936         MWL8K_ENCR_SET_KEY,
3937         MWL8K_ENCR_REMOVE_KEY,
3938         MWL8K_ENCR_SET_GROUP_KEY,
3939 };
3940
3941 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3942 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3943 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3944 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3945 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3946
3947 enum {
3948         MWL8K_ALG_WEP,
3949         MWL8K_ALG_TKIP,
3950         MWL8K_ALG_CCMP,
3951 };
3952
3953 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3954 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3955 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3956 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3957 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3958
3959 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3960                                               struct ieee80211_vif *vif,
3961                                               u8 *addr,
3962                                               u8 encr_type)
3963 {
3964         struct mwl8k_cmd_update_encryption *cmd;
3965         int rc;
3966
3967         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3968         if (cmd == NULL)
3969                 return -ENOMEM;
3970
3971         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3972         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3973         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3974         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3975         cmd->encr_type = encr_type;
3976
3977         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3978         kfree(cmd);
3979
3980         return rc;
3981 }
3982
3983 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3984                                                 u8 *addr,
3985                                                 struct ieee80211_key_conf *key)
3986 {
3987         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3988         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3989         cmd->length = cpu_to_le16(sizeof(*cmd) -
3990                                 offsetof(struct mwl8k_cmd_set_key, length));
3991         cmd->key_id = cpu_to_le32(key->keyidx);
3992         cmd->key_len = cpu_to_le16(key->keylen);
3993         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3994
3995         switch (key->cipher) {
3996         case WLAN_CIPHER_SUITE_WEP40:
3997         case WLAN_CIPHER_SUITE_WEP104:
3998                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3999                 if (key->keyidx == 0)
4000                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4001
4002                 break;
4003         case WLAN_CIPHER_SUITE_TKIP:
4004                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4005                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4006                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4007                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4008                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4009                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4010                 break;
4011         case WLAN_CIPHER_SUITE_CCMP:
4012                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4013                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4014                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4015                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4016                 break;
4017         default:
4018                 return -ENOTSUPP;
4019         }
4020
4021         return 0;
4022 }
4023
4024 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4025                                                 struct ieee80211_vif *vif,
4026                                                 u8 *addr,
4027                                                 struct ieee80211_key_conf *key)
4028 {
4029         struct mwl8k_cmd_set_key *cmd;
4030         int rc;
4031         int keymlen;
4032         u32 action;
4033         u8 idx;
4034         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4035
4036         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4037         if (cmd == NULL)
4038                 return -ENOMEM;
4039
4040         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4041         if (rc < 0)
4042                 goto done;
4043
4044         idx = key->keyidx;
4045
4046         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4047                 action = MWL8K_ENCR_SET_KEY;
4048         else
4049                 action = MWL8K_ENCR_SET_GROUP_KEY;
4050
4051         switch (key->cipher) {
4052         case WLAN_CIPHER_SUITE_WEP40:
4053         case WLAN_CIPHER_SUITE_WEP104:
4054                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4055                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4056                                                 sizeof(*key) + key->keylen);
4057                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4058                 }
4059
4060                 keymlen = key->keylen;
4061                 action = MWL8K_ENCR_SET_KEY;
4062                 break;
4063         case WLAN_CIPHER_SUITE_TKIP:
4064                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4065                 break;
4066         case WLAN_CIPHER_SUITE_CCMP:
4067                 keymlen = key->keylen;
4068                 break;
4069         default:
4070                 rc = -ENOTSUPP;
4071                 goto done;
4072         }
4073
4074         memcpy(cmd->key_material, key->key, keymlen);
4075         cmd->action = cpu_to_le32(action);
4076
4077         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4078 done:
4079         kfree(cmd);
4080
4081         return rc;
4082 }
4083
4084 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4085                                                 struct ieee80211_vif *vif,
4086                                                 u8 *addr,
4087                                                 struct ieee80211_key_conf *key)
4088 {
4089         struct mwl8k_cmd_set_key *cmd;
4090         int rc;
4091         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4092
4093         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4094         if (cmd == NULL)
4095                 return -ENOMEM;
4096
4097         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4098         if (rc < 0)
4099                 goto done;
4100
4101         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4102                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4103                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4104
4105         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4106
4107         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4108 done:
4109         kfree(cmd);
4110
4111         return rc;
4112 }
4113
4114 static int mwl8k_set_key(struct ieee80211_hw *hw,
4115                          enum set_key_cmd cmd_param,
4116                          struct ieee80211_vif *vif,
4117                          struct ieee80211_sta *sta,
4118                          struct ieee80211_key_conf *key)
4119 {
4120         int rc = 0;
4121         u8 encr_type;
4122         u8 *addr;
4123         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4124
4125         if (vif->type == NL80211_IFTYPE_STATION)
4126                 return -EOPNOTSUPP;
4127
4128         if (sta == NULL)
4129                 addr = vif->addr;
4130         else
4131                 addr = sta->addr;
4132
4133         if (cmd_param == SET_KEY) {
4134                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4135                 if (rc)
4136                         goto out;
4137
4138                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4139                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4140                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4141                 else
4142                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4143
4144                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4145                                                                 encr_type);
4146                 if (rc)
4147                         goto out;
4148
4149                 mwl8k_vif->is_hw_crypto_enabled = true;
4150
4151         } else {
4152                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4153
4154                 if (rc)
4155                         goto out;
4156         }
4157 out:
4158         return rc;
4159 }
4160
4161 /*
4162  * CMD_UPDATE_STADB.
4163  */
4164 struct ewc_ht_info {
4165         __le16  control1;
4166         __le16  control2;
4167         __le16  control3;
4168 } __packed;
4169
4170 struct peer_capability_info {
4171         /* Peer type - AP vs. STA.  */
4172         __u8    peer_type;
4173
4174         /* Basic 802.11 capabilities from assoc resp.  */
4175         __le16  basic_caps;
4176
4177         /* Set if peer supports 802.11n high throughput (HT).  */
4178         __u8    ht_support;
4179
4180         /* Valid if HT is supported.  */
4181         __le16  ht_caps;
4182         __u8    extended_ht_caps;
4183         struct ewc_ht_info      ewc_info;
4184
4185         /* Legacy rate table. Intersection of our rates and peer rates.  */
4186         __u8    legacy_rates[12];
4187
4188         /* HT rate table. Intersection of our rates and peer rates.  */
4189         __u8    ht_rates[16];
4190         __u8    pad[16];
4191
4192         /* If set, interoperability mode, no proprietary extensions.  */
4193         __u8    interop;
4194         __u8    pad2;
4195         __u8    station_id;
4196         __le16  amsdu_enabled;
4197 } __packed;
4198
4199 struct mwl8k_cmd_update_stadb {
4200         struct mwl8k_cmd_pkt header;
4201
4202         /* See STADB_ACTION_TYPE */
4203         __le32  action;
4204
4205         /* Peer MAC address */
4206         __u8    peer_addr[ETH_ALEN];
4207
4208         __le32  reserved;
4209
4210         /* Peer info - valid during add/update.  */
4211         struct peer_capability_info     peer_info;
4212 } __packed;
4213
4214 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4215 #define MWL8K_STA_DB_DEL_ENTRY          2
4216
4217 /* Peer Entry flags - used to define the type of the peer node */
4218 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4219
4220 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4221                                       struct ieee80211_vif *vif,
4222                                       struct ieee80211_sta *sta)
4223 {
4224         struct mwl8k_cmd_update_stadb *cmd;
4225         struct peer_capability_info *p;
4226         u32 rates;
4227         int rc;
4228
4229         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4230         if (cmd == NULL)
4231                 return -ENOMEM;
4232
4233         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4234         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4235         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4236         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4237
4238         p = &cmd->peer_info;
4239         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4240         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4241         p->ht_support = sta->ht_cap.ht_supported;
4242         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4243         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4244                 ((sta->ht_cap.ampdu_density & 7) << 2);
4245         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4246                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4247         else
4248                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4249         legacy_rate_mask_to_array(p->legacy_rates, rates);
4250         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4251         p->interop = 1;
4252         p->amsdu_enabled = 0;
4253
4254         rc = mwl8k_post_cmd(hw, &cmd->header);
4255         kfree(cmd);
4256
4257         return rc ? rc : p->station_id;
4258 }
4259
4260 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4261                                       struct ieee80211_vif *vif, u8 *addr)
4262 {
4263         struct mwl8k_cmd_update_stadb *cmd;
4264         int rc;
4265
4266         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4267         if (cmd == NULL)
4268                 return -ENOMEM;
4269
4270         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4271         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4272         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4273         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4274
4275         rc = mwl8k_post_cmd(hw, &cmd->header);
4276         kfree(cmd);
4277
4278         return rc;
4279 }
4280
4281
4282 /*
4283  * Interrupt handling.
4284  */
4285 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4286 {
4287         struct ieee80211_hw *hw = dev_id;
4288         struct mwl8k_priv *priv = hw->priv;
4289         u32 status;
4290
4291         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4292         if (!status)
4293                 return IRQ_NONE;
4294
4295         if (status & MWL8K_A2H_INT_TX_DONE) {
4296                 status &= ~MWL8K_A2H_INT_TX_DONE;
4297                 tasklet_schedule(&priv->poll_tx_task);
4298         }
4299
4300         if (status & MWL8K_A2H_INT_RX_READY) {
4301                 status &= ~MWL8K_A2H_INT_RX_READY;
4302                 tasklet_schedule(&priv->poll_rx_task);
4303         }
4304
4305         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4306                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4307                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4308         }
4309
4310         if (status)
4311                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4312
4313         if (status & MWL8K_A2H_INT_OPC_DONE) {
4314                 if (priv->hostcmd_wait != NULL)
4315                         complete(priv->hostcmd_wait);
4316         }
4317
4318         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4319                 if (!mutex_is_locked(&priv->fw_mutex) &&
4320                     priv->radio_on && priv->pending_tx_pkts)
4321                         mwl8k_tx_start(priv);
4322         }
4323
4324         return IRQ_HANDLED;
4325 }
4326
4327 static void mwl8k_tx_poll(unsigned long data)
4328 {
4329         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4330         struct mwl8k_priv *priv = hw->priv;
4331         int limit;
4332         int i;
4333
4334         limit = 32;
4335
4336         spin_lock_bh(&priv->tx_lock);
4337
4338         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4339                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4340
4341         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4342                 complete(priv->tx_wait);
4343                 priv->tx_wait = NULL;
4344         }
4345
4346         spin_unlock_bh(&priv->tx_lock);
4347
4348         if (limit) {
4349                 writel(~MWL8K_A2H_INT_TX_DONE,
4350                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4351         } else {
4352                 tasklet_schedule(&priv->poll_tx_task);
4353         }
4354 }
4355
4356 static void mwl8k_rx_poll(unsigned long data)
4357 {
4358         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4359         struct mwl8k_priv *priv = hw->priv;
4360         int limit;
4361
4362         limit = 32;
4363         limit -= rxq_process(hw, 0, limit);
4364         limit -= rxq_refill(hw, 0, limit);
4365
4366         if (limit) {
4367                 writel(~MWL8K_A2H_INT_RX_READY,
4368                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4369         } else {
4370                 tasklet_schedule(&priv->poll_rx_task);
4371         }
4372 }
4373
4374
4375 /*
4376  * Core driver operations.
4377  */
4378 static void mwl8k_tx(struct ieee80211_hw *hw,
4379                      struct ieee80211_tx_control *control,
4380                      struct sk_buff *skb)
4381 {
4382         struct mwl8k_priv *priv = hw->priv;
4383         int index = skb_get_queue_mapping(skb);
4384
4385         if (!priv->radio_on) {
4386                 wiphy_debug(hw->wiphy,
4387                             "dropped TX frame since radio disabled\n");
4388                 dev_kfree_skb(skb);
4389                 return;
4390         }
4391
4392         mwl8k_txq_xmit(hw, index, control->sta, skb);
4393 }
4394
4395 static int mwl8k_start(struct ieee80211_hw *hw)
4396 {
4397         struct mwl8k_priv *priv = hw->priv;
4398         int rc;
4399
4400         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4401                          IRQF_SHARED, MWL8K_NAME, hw);
4402         if (rc) {
4403                 priv->irq = -1;
4404                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4405                 return -EIO;
4406         }
4407         priv->irq = priv->pdev->irq;
4408
4409         /* Enable TX reclaim and RX tasklets.  */
4410         tasklet_enable(&priv->poll_tx_task);
4411         tasklet_enable(&priv->poll_rx_task);
4412
4413         /* Enable interrupts */
4414         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4415         iowrite32(MWL8K_A2H_EVENTS,
4416                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4417
4418         rc = mwl8k_fw_lock(hw);
4419         if (!rc) {
4420                 rc = mwl8k_cmd_radio_enable(hw);
4421
4422                 if (!priv->ap_fw) {
4423                         if (!rc)
4424                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4425
4426                         if (!rc)
4427                                 rc = mwl8k_cmd_set_pre_scan(hw);
4428
4429                         if (!rc)
4430                                 rc = mwl8k_cmd_set_post_scan(hw,
4431                                                 "\x00\x00\x00\x00\x00\x00");
4432                 }
4433
4434                 if (!rc)
4435                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4436
4437                 if (!rc)
4438                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4439
4440                 mwl8k_fw_unlock(hw);
4441         }
4442
4443         if (rc) {
4444                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4445                 free_irq(priv->pdev->irq, hw);
4446                 priv->irq = -1;
4447                 tasklet_disable(&priv->poll_tx_task);
4448                 tasklet_disable(&priv->poll_rx_task);
4449         }
4450
4451         return rc;
4452 }
4453
4454 static void mwl8k_stop(struct ieee80211_hw *hw)
4455 {
4456         struct mwl8k_priv *priv = hw->priv;
4457         int i;
4458
4459         if (!priv->hw_restart_in_progress)
4460                 mwl8k_cmd_radio_disable(hw);
4461
4462         ieee80211_stop_queues(hw);
4463
4464         /* Disable interrupts */
4465         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4466         if (priv->irq != -1) {
4467                 free_irq(priv->pdev->irq, hw);
4468                 priv->irq = -1;
4469         }
4470
4471         /* Stop finalize join worker */
4472         cancel_work_sync(&priv->finalize_join_worker);
4473         cancel_work_sync(&priv->watchdog_ba_handle);
4474         if (priv->beacon_skb != NULL)
4475                 dev_kfree_skb(priv->beacon_skb);
4476
4477         /* Stop TX reclaim and RX tasklets.  */
4478         tasklet_disable(&priv->poll_tx_task);
4479         tasklet_disable(&priv->poll_rx_task);
4480
4481         /* Return all skbs to mac80211 */
4482         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4483                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4484 }
4485
4486 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4487
4488 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4489                                struct ieee80211_vif *vif)
4490 {
4491         struct mwl8k_priv *priv = hw->priv;
4492         struct mwl8k_vif *mwl8k_vif;
4493         u32 macids_supported;
4494         int macid, rc;
4495         struct mwl8k_device_info *di;
4496
4497         /*
4498          * Reject interface creation if sniffer mode is active, as
4499          * STA operation is mutually exclusive with hardware sniffer
4500          * mode.  (Sniffer mode is only used on STA firmware.)
4501          */
4502         if (priv->sniffer_enabled) {
4503                 wiphy_info(hw->wiphy,
4504                            "unable to create STA interface because sniffer mode is enabled\n");
4505                 return -EINVAL;
4506         }
4507
4508         di = priv->device_info;
4509         switch (vif->type) {
4510         case NL80211_IFTYPE_AP:
4511                 if (!priv->ap_fw && di->fw_image_ap) {
4512                         /* we must load the ap fw to meet this request */
4513                         if (!list_empty(&priv->vif_list))
4514                                 return -EBUSY;
4515                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4516                         if (rc)
4517                                 return rc;
4518                 }
4519                 macids_supported = priv->ap_macids_supported;
4520                 break;
4521         case NL80211_IFTYPE_STATION:
4522                 if (priv->ap_fw && di->fw_image_sta) {
4523                         /* we must load the sta fw to meet this request */
4524                         if (!list_empty(&priv->vif_list))
4525                                 return -EBUSY;
4526                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4527                         if (rc)
4528                                 return rc;
4529                 }
4530                 macids_supported = priv->sta_macids_supported;
4531                 break;
4532         default:
4533                 return -EINVAL;
4534         }
4535
4536         macid = ffs(macids_supported & ~priv->macids_used);
4537         if (!macid--)
4538                 return -EBUSY;
4539
4540         /* Setup driver private area. */
4541         mwl8k_vif = MWL8K_VIF(vif);
4542         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4543         mwl8k_vif->vif = vif;
4544         mwl8k_vif->macid = macid;
4545         mwl8k_vif->seqno = 0;
4546         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4547         mwl8k_vif->is_hw_crypto_enabled = false;
4548
4549         /* Set the mac address.  */
4550         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4551
4552         if (priv->ap_fw)
4553                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4554
4555         priv->macids_used |= 1 << mwl8k_vif->macid;
4556         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4557
4558         return 0;
4559 }
4560
4561 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4562 {
4563         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4564         if (!priv->macids_used)
4565                 return;
4566
4567         priv->macids_used &= ~(1 << vif->macid);
4568         list_del(&vif->list);
4569 }
4570
4571 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4572                                    struct ieee80211_vif *vif)
4573 {
4574         struct mwl8k_priv *priv = hw->priv;
4575         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4576
4577         if (priv->ap_fw)
4578                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4579
4580         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4581
4582         mwl8k_remove_vif(priv, mwl8k_vif);
4583 }
4584
4585 static void mwl8k_hw_restart_work(struct work_struct *work)
4586 {
4587         struct mwl8k_priv *priv =
4588                 container_of(work, struct mwl8k_priv, fw_reload);
4589         struct ieee80211_hw *hw = priv->hw;
4590         struct mwl8k_device_info *di;
4591         int rc;
4592
4593         /* If some command is waiting for a response, clear it */
4594         if (priv->hostcmd_wait != NULL) {
4595                 complete(priv->hostcmd_wait);
4596                 priv->hostcmd_wait = NULL;
4597         }
4598
4599         priv->hw_restart_owner = current;
4600         di = priv->device_info;
4601         mwl8k_fw_lock(hw);
4602
4603         if (priv->ap_fw)
4604                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4605         else
4606                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4607
4608         if (rc)
4609                 goto fail;
4610
4611         priv->hw_restart_owner = NULL;
4612         priv->hw_restart_in_progress = false;
4613
4614         /*
4615          * This unlock will wake up the queues and
4616          * also opens the command path for other
4617          * commands
4618          */
4619         mwl8k_fw_unlock(hw);
4620
4621         ieee80211_restart_hw(hw);
4622
4623         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4624
4625         return;
4626 fail:
4627         mwl8k_fw_unlock(hw);
4628
4629         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4630 }
4631
4632 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4633 {
4634         struct ieee80211_conf *conf = &hw->conf;
4635         struct mwl8k_priv *priv = hw->priv;
4636         int rc;
4637
4638         if (conf->flags & IEEE80211_CONF_IDLE) {
4639                 mwl8k_cmd_radio_disable(hw);
4640                 return 0;
4641         }
4642
4643         rc = mwl8k_fw_lock(hw);
4644         if (rc)
4645                 return rc;
4646
4647         rc = mwl8k_cmd_radio_enable(hw);
4648         if (rc)
4649                 goto out;
4650
4651         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4652         if (rc)
4653                 goto out;
4654
4655         if (conf->power_level > 18)
4656                 conf->power_level = 18;
4657
4658         if (priv->ap_fw) {
4659
4660                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4661                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4662                         if (rc)
4663                                 goto out;
4664                 }
4665
4666                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4667                 if (rc)
4668                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4669                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4670                 if (rc)
4671                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4672
4673         } else {
4674                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4675                 if (rc)
4676                         goto out;
4677                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4678         }
4679
4680 out:
4681         mwl8k_fw_unlock(hw);
4682
4683         return rc;
4684 }
4685
4686 static void
4687 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4688                            struct ieee80211_bss_conf *info, u32 changed)
4689 {
4690         struct mwl8k_priv *priv = hw->priv;
4691         u32 ap_legacy_rates = 0;
4692         u8 ap_mcs_rates[16];
4693         int rc;
4694
4695         if (mwl8k_fw_lock(hw))
4696                 return;
4697
4698         /*
4699          * No need to capture a beacon if we're no longer associated.
4700          */
4701         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4702                 priv->capture_beacon = false;
4703
4704         /*
4705          * Get the AP's legacy and MCS rates.
4706          */
4707         if (vif->bss_conf.assoc) {
4708                 struct ieee80211_sta *ap;
4709
4710                 rcu_read_lock();
4711
4712                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4713                 if (ap == NULL) {
4714                         rcu_read_unlock();
4715                         goto out;
4716                 }
4717
4718                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4719                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4720                 } else {
4721                         ap_legacy_rates =
4722                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4723                 }
4724                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4725
4726                 rcu_read_unlock();
4727         }
4728
4729         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4730                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4731                 if (rc)
4732                         goto out;
4733
4734                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4735                 if (rc)
4736                         goto out;
4737         }
4738
4739         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4740                 rc = mwl8k_set_radio_preamble(hw,
4741                                 vif->bss_conf.use_short_preamble);
4742                 if (rc)
4743                         goto out;
4744         }
4745
4746         if (changed & BSS_CHANGED_ERP_SLOT) {
4747                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4748                 if (rc)
4749                         goto out;
4750         }
4751
4752         if (vif->bss_conf.assoc &&
4753             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4754                         BSS_CHANGED_HT))) {
4755                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4756                 if (rc)
4757                         goto out;
4758         }
4759
4760         if (vif->bss_conf.assoc &&
4761             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4762                 /*
4763                  * Finalize the join.  Tell rx handler to process
4764                  * next beacon from our BSSID.
4765                  */
4766                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4767                 priv->capture_beacon = true;
4768         }
4769
4770 out:
4771         mwl8k_fw_unlock(hw);
4772 }
4773
4774 static void
4775 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4776                           struct ieee80211_bss_conf *info, u32 changed)
4777 {
4778         int rc;
4779
4780         if (mwl8k_fw_lock(hw))
4781                 return;
4782
4783         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4784                 rc = mwl8k_set_radio_preamble(hw,
4785                                 vif->bss_conf.use_short_preamble);
4786                 if (rc)
4787                         goto out;
4788         }
4789
4790         if (changed & BSS_CHANGED_BASIC_RATES) {
4791                 int idx;
4792                 int rate;
4793
4794                 /*
4795                  * Use lowest supported basic rate for multicasts
4796                  * and management frames (such as probe responses --
4797                  * beacons will always go out at 1 Mb/s).
4798                  */
4799                 idx = ffs(vif->bss_conf.basic_rates);
4800                 if (idx)
4801                         idx--;
4802
4803                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4804                         rate = mwl8k_rates_24[idx].hw_value;
4805                 else
4806                         rate = mwl8k_rates_50[idx].hw_value;
4807
4808                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4809         }
4810
4811         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4812                 struct sk_buff *skb;
4813
4814                 skb = ieee80211_beacon_get(hw, vif);
4815                 if (skb != NULL) {
4816                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4817                         kfree_skb(skb);
4818                 }
4819         }
4820
4821         if (changed & BSS_CHANGED_BEACON_ENABLED)
4822                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4823
4824 out:
4825         mwl8k_fw_unlock(hw);
4826 }
4827
4828 static void
4829 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4830                        struct ieee80211_bss_conf *info, u32 changed)
4831 {
4832         struct mwl8k_priv *priv = hw->priv;
4833
4834         if (!priv->ap_fw)
4835                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4836         else
4837                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4838 }
4839
4840 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4841                                    struct netdev_hw_addr_list *mc_list)
4842 {
4843         struct mwl8k_cmd_pkt *cmd;
4844
4845         /*
4846          * Synthesize and return a command packet that programs the
4847          * hardware multicast address filter.  At this point we don't
4848          * know whether FIF_ALLMULTI is being requested, but if it is,
4849          * we'll end up throwing this packet away and creating a new
4850          * one in mwl8k_configure_filter().
4851          */
4852         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4853
4854         return (unsigned long)cmd;
4855 }
4856
4857 static int
4858 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4859                                unsigned int changed_flags,
4860                                unsigned int *total_flags)
4861 {
4862         struct mwl8k_priv *priv = hw->priv;
4863
4864         /*
4865          * Hardware sniffer mode is mutually exclusive with STA
4866          * operation, so refuse to enable sniffer mode if a STA
4867          * interface is active.
4868          */
4869         if (!list_empty(&priv->vif_list)) {
4870                 if (net_ratelimit())
4871                         wiphy_info(hw->wiphy,
4872                                    "not enabling sniffer mode because STA interface is active\n");
4873                 return 0;
4874         }
4875
4876         if (!priv->sniffer_enabled) {
4877                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4878                         return 0;
4879                 priv->sniffer_enabled = true;
4880         }
4881
4882         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4883                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4884                         FIF_OTHER_BSS;
4885
4886         return 1;
4887 }
4888
4889 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4890 {
4891         if (!list_empty(&priv->vif_list))
4892                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4893
4894         return NULL;
4895 }
4896
4897 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4898                                    unsigned int changed_flags,
4899                                    unsigned int *total_flags,
4900                                    u64 multicast)
4901 {
4902         struct mwl8k_priv *priv = hw->priv;
4903         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4904
4905         /*
4906          * AP firmware doesn't allow fine-grained control over
4907          * the receive filter.
4908          */
4909         if (priv->ap_fw) {
4910                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4911                 kfree(cmd);
4912                 return;
4913         }
4914
4915         /*
4916          * Enable hardware sniffer mode if FIF_CONTROL or
4917          * FIF_OTHER_BSS is requested.
4918          */
4919         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4920             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4921                 kfree(cmd);
4922                 return;
4923         }
4924
4925         /* Clear unsupported feature flags */
4926         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4927
4928         if (mwl8k_fw_lock(hw)) {
4929                 kfree(cmd);
4930                 return;
4931         }
4932
4933         if (priv->sniffer_enabled) {
4934                 mwl8k_cmd_enable_sniffer(hw, 0);
4935                 priv->sniffer_enabled = false;
4936         }
4937
4938         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4939                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4940                         /*
4941                          * Disable the BSS filter.
4942                          */
4943                         mwl8k_cmd_set_pre_scan(hw);
4944                 } else {
4945                         struct mwl8k_vif *mwl8k_vif;
4946                         const u8 *bssid;
4947
4948                         /*
4949                          * Enable the BSS filter.
4950                          *
4951                          * If there is an active STA interface, use that
4952                          * interface's BSSID, otherwise use a dummy one
4953                          * (where the OUI part needs to be nonzero for
4954                          * the BSSID to be accepted by POST_SCAN).
4955                          */
4956                         mwl8k_vif = mwl8k_first_vif(priv);
4957                         if (mwl8k_vif != NULL)
4958                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4959                         else
4960                                 bssid = "\x01\x00\x00\x00\x00\x00";
4961
4962                         mwl8k_cmd_set_post_scan(hw, bssid);
4963                 }
4964         }
4965
4966         /*
4967          * If FIF_ALLMULTI is being requested, throw away the command
4968          * packet that ->prepare_multicast() built and replace it with
4969          * a command packet that enables reception of all multicast
4970          * packets.
4971          */
4972         if (*total_flags & FIF_ALLMULTI) {
4973                 kfree(cmd);
4974                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4975         }
4976
4977         if (cmd != NULL) {
4978                 mwl8k_post_cmd(hw, cmd);
4979                 kfree(cmd);
4980         }
4981
4982         mwl8k_fw_unlock(hw);
4983 }
4984
4985 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4986 {
4987         return mwl8k_cmd_set_rts_threshold(hw, value);
4988 }
4989
4990 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4991                             struct ieee80211_vif *vif,
4992                             struct ieee80211_sta *sta)
4993 {
4994         struct mwl8k_priv *priv = hw->priv;
4995
4996         if (priv->ap_fw)
4997                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4998         else
4999                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5000 }
5001
5002 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5003                          struct ieee80211_vif *vif,
5004                          struct ieee80211_sta *sta)
5005 {
5006         struct mwl8k_priv *priv = hw->priv;
5007         int ret;
5008         int i;
5009         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5010         struct ieee80211_key_conf *key;
5011
5012         if (!priv->ap_fw) {
5013                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5014                 if (ret >= 0) {
5015                         MWL8K_STA(sta)->peer_id = ret;
5016                         if (sta->ht_cap.ht_supported)
5017                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5018                         ret = 0;
5019                 }
5020
5021         } else {
5022                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5023         }
5024
5025         for (i = 0; i < NUM_WEP_KEYS; i++) {
5026                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5027                 if (mwl8k_vif->wep_key_conf[i].enabled)
5028                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5029         }
5030         return ret;
5031 }
5032
5033 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5034                          struct ieee80211_vif *vif, u16 queue,
5035                          const struct ieee80211_tx_queue_params *params)
5036 {
5037         struct mwl8k_priv *priv = hw->priv;
5038         int rc;
5039
5040         rc = mwl8k_fw_lock(hw);
5041         if (!rc) {
5042                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5043                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5044
5045                 if (!priv->wmm_enabled)
5046                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5047
5048                 if (!rc) {
5049                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5050                         rc = mwl8k_cmd_set_edca_params(hw, q,
5051                                                        params->cw_min,
5052                                                        params->cw_max,
5053                                                        params->aifs,
5054                                                        params->txop);
5055                 }
5056
5057                 mwl8k_fw_unlock(hw);
5058         }
5059
5060         return rc;
5061 }
5062
5063 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5064                            struct ieee80211_low_level_stats *stats)
5065 {
5066         return mwl8k_cmd_get_stat(hw, stats);
5067 }
5068
5069 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5070                                 struct survey_info *survey)
5071 {
5072         struct mwl8k_priv *priv = hw->priv;
5073         struct ieee80211_conf *conf = &hw->conf;
5074
5075         if (idx != 0)
5076                 return -ENOENT;
5077
5078         survey->channel = conf->channel;
5079         survey->filled = SURVEY_INFO_NOISE_DBM;
5080         survey->noise = priv->noise;
5081
5082         return 0;
5083 }
5084
5085 #define MAX_AMPDU_ATTEMPTS 5
5086
5087 static int
5088 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5089                    enum ieee80211_ampdu_mlme_action action,
5090                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5091                    u8 buf_size)
5092 {
5093
5094         int i, rc = 0;
5095         struct mwl8k_priv *priv = hw->priv;
5096         struct mwl8k_ampdu_stream *stream;
5097         u8 *addr = sta->addr;
5098         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5099
5100         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5101                 return -ENOTSUPP;
5102
5103         spin_lock(&priv->stream_lock);
5104         stream = mwl8k_lookup_stream(hw, addr, tid);
5105
5106         switch (action) {
5107         case IEEE80211_AMPDU_RX_START:
5108         case IEEE80211_AMPDU_RX_STOP:
5109                 break;
5110         case IEEE80211_AMPDU_TX_START:
5111                 /* By the time we get here the hw queues may contain outgoing
5112                  * packets for this RA/TID that are not part of this BA
5113                  * session.  The hw will assign sequence numbers to these
5114                  * packets as they go out.  So if we query the hw for its next
5115                  * sequence number and use that for the SSN here, it may end up
5116                  * being wrong, which will lead to sequence number mismatch at
5117                  * the recipient.  To avoid this, we reset the sequence number
5118                  * to O for the first MPDU in this BA stream.
5119                  */
5120                 *ssn = 0;
5121                 if (stream == NULL) {
5122                         /* This means that somebody outside this driver called
5123                          * ieee80211_start_tx_ba_session.  This is unexpected
5124                          * because we do our own rate control.  Just warn and
5125                          * move on.
5126                          */
5127                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5128                                    "Proceeding anyway.\n", __func__);
5129                         stream = mwl8k_add_stream(hw, sta, tid);
5130                 }
5131                 if (stream == NULL) {
5132                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5133                         rc = -EBUSY;
5134                         break;
5135                 }
5136                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5137
5138                 /* Release the lock before we do the time consuming stuff */
5139                 spin_unlock(&priv->stream_lock);
5140                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5141
5142                         /* Check if link is still valid */
5143                         if (!sta_info->is_ampdu_allowed) {
5144                                 spin_lock(&priv->stream_lock);
5145                                 mwl8k_remove_stream(hw, stream);
5146                                 spin_unlock(&priv->stream_lock);
5147                                 return -EBUSY;
5148                         }
5149
5150                         rc = mwl8k_check_ba(hw, stream, vif);
5151
5152                         /* If HW restart is in progress mwl8k_post_cmd will
5153                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5154                          * such cases
5155                          */
5156                         if (!rc || rc == -EBUSY)
5157                                 break;
5158                         /*
5159                          * HW queues take time to be flushed, give them
5160                          * sufficient time
5161                          */
5162
5163                         msleep(1000);
5164                 }
5165                 spin_lock(&priv->stream_lock);
5166                 if (rc) {
5167                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5168                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5169                         mwl8k_remove_stream(hw, stream);
5170                         rc = -EBUSY;
5171                         break;
5172                 }
5173                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5174                 break;
5175         case IEEE80211_AMPDU_TX_STOP_CONT:
5176         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5177         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5178                 if (stream) {
5179                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5180                                 spin_unlock(&priv->stream_lock);
5181                                 mwl8k_destroy_ba(hw, stream);
5182                                 spin_lock(&priv->stream_lock);
5183                         }
5184                         mwl8k_remove_stream(hw, stream);
5185                 }
5186                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5187                 break;
5188         case IEEE80211_AMPDU_TX_OPERATIONAL:
5189                 BUG_ON(stream == NULL);
5190                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5191                 spin_unlock(&priv->stream_lock);
5192                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5193                 spin_lock(&priv->stream_lock);
5194                 if (!rc)
5195                         stream->state = AMPDU_STREAM_ACTIVE;
5196                 else {
5197                         spin_unlock(&priv->stream_lock);
5198                         mwl8k_destroy_ba(hw, stream);
5199                         spin_lock(&priv->stream_lock);
5200                         wiphy_debug(hw->wiphy,
5201                                 "Failed adding stream for sta %pM tid %d\n",
5202                                 addr, tid);
5203                         mwl8k_remove_stream(hw, stream);
5204                 }
5205                 break;
5206
5207         default:
5208                 rc = -ENOTSUPP;
5209         }
5210
5211         spin_unlock(&priv->stream_lock);
5212         return rc;
5213 }
5214
5215 static const struct ieee80211_ops mwl8k_ops = {
5216         .tx                     = mwl8k_tx,
5217         .start                  = mwl8k_start,
5218         .stop                   = mwl8k_stop,
5219         .add_interface          = mwl8k_add_interface,
5220         .remove_interface       = mwl8k_remove_interface,
5221         .config                 = mwl8k_config,
5222         .bss_info_changed       = mwl8k_bss_info_changed,
5223         .prepare_multicast      = mwl8k_prepare_multicast,
5224         .configure_filter       = mwl8k_configure_filter,
5225         .set_key                = mwl8k_set_key,
5226         .set_rts_threshold      = mwl8k_set_rts_threshold,
5227         .sta_add                = mwl8k_sta_add,
5228         .sta_remove             = mwl8k_sta_remove,
5229         .conf_tx                = mwl8k_conf_tx,
5230         .get_stats              = mwl8k_get_stats,
5231         .get_survey             = mwl8k_get_survey,
5232         .ampdu_action           = mwl8k_ampdu_action,
5233 };
5234
5235 static void mwl8k_finalize_join_worker(struct work_struct *work)
5236 {
5237         struct mwl8k_priv *priv =
5238                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5239         struct sk_buff *skb = priv->beacon_skb;
5240         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5241         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5242         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5243                                          mgmt->u.beacon.variable, len);
5244         int dtim_period = 1;
5245
5246         if (tim && tim[1] >= 2)
5247                 dtim_period = tim[3];
5248
5249         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5250
5251         dev_kfree_skb(skb);
5252         priv->beacon_skb = NULL;
5253 }
5254
5255 enum {
5256         MWL8363 = 0,
5257         MWL8687,
5258         MWL8366,
5259 };
5260
5261 #define MWL8K_8366_AP_FW_API 2
5262 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5263 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5264
5265 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5266         [MWL8363] = {
5267                 .part_name      = "88w8363",
5268                 .helper_image   = "mwl8k/helper_8363.fw",
5269                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5270         },
5271         [MWL8687] = {
5272                 .part_name      = "88w8687",
5273                 .helper_image   = "mwl8k/helper_8687.fw",
5274                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5275         },
5276         [MWL8366] = {
5277                 .part_name      = "88w8366",
5278                 .helper_image   = "mwl8k/helper_8366.fw",
5279                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5280                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5281                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5282                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5283         },
5284 };
5285
5286 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5287 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5288 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5289 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5290 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5291 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5292 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5293
5294 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5295         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5296         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5297         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5298         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5299         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5300         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5301         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5302         { },
5303 };
5304 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5305
5306 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5307 {
5308         int rc;
5309         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5310                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5311                priv->fw_pref, priv->fw_alt);
5312         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5313         if (rc) {
5314                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5315                        pci_name(priv->pdev), priv->fw_alt);
5316                 return rc;
5317         }
5318         return 0;
5319 }
5320
5321 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5322 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5323 {
5324         struct mwl8k_priv *priv = context;
5325         struct mwl8k_device_info *di = priv->device_info;
5326         int rc;
5327
5328         switch (priv->fw_state) {
5329         case FW_STATE_INIT:
5330                 if (!fw) {
5331                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5332                                pci_name(priv->pdev), di->helper_image);
5333                         goto fail;
5334                 }
5335                 priv->fw_helper = fw;
5336                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5337                                       true);
5338                 if (rc && priv->fw_alt) {
5339                         rc = mwl8k_request_alt_fw(priv);
5340                         if (rc)
5341                                 goto fail;
5342                         priv->fw_state = FW_STATE_LOADING_ALT;
5343                 } else if (rc)
5344                         goto fail;
5345                 else
5346                         priv->fw_state = FW_STATE_LOADING_PREF;
5347                 break;
5348
5349         case FW_STATE_LOADING_PREF:
5350                 if (!fw) {
5351                         if (priv->fw_alt) {
5352                                 rc = mwl8k_request_alt_fw(priv);
5353                                 if (rc)
5354                                         goto fail;
5355                                 priv->fw_state = FW_STATE_LOADING_ALT;
5356                         } else
5357                                 goto fail;
5358                 } else {
5359                         priv->fw_ucode = fw;
5360                         rc = mwl8k_firmware_load_success(priv);
5361                         if (rc)
5362                                 goto fail;
5363                         else
5364                                 complete(&priv->firmware_loading_complete);
5365                 }
5366                 break;
5367
5368         case FW_STATE_LOADING_ALT:
5369                 if (!fw) {
5370                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5371                                pci_name(priv->pdev), di->helper_image);
5372                         goto fail;
5373                 }
5374                 priv->fw_ucode = fw;
5375                 rc = mwl8k_firmware_load_success(priv);
5376                 if (rc)
5377                         goto fail;
5378                 else
5379                         complete(&priv->firmware_loading_complete);
5380                 break;
5381
5382         default:
5383                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5384                        MWL8K_NAME, priv->fw_state);
5385                 BUG_ON(1);
5386         }
5387
5388         return;
5389
5390 fail:
5391         priv->fw_state = FW_STATE_ERROR;
5392         complete(&priv->firmware_loading_complete);
5393         device_release_driver(&priv->pdev->dev);
5394         mwl8k_release_firmware(priv);
5395 }
5396
5397 #define MAX_RESTART_ATTEMPTS 1
5398 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5399                                bool nowait)
5400 {
5401         struct mwl8k_priv *priv = hw->priv;
5402         int rc;
5403         int count = MAX_RESTART_ATTEMPTS;
5404
5405 retry:
5406         /* Reset firmware and hardware */
5407         mwl8k_hw_reset(priv);
5408
5409         /* Ask userland hotplug daemon for the device firmware */
5410         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5411         if (rc) {
5412                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5413                 return rc;
5414         }
5415
5416         if (nowait)
5417                 return rc;
5418
5419         /* Load firmware into hardware */
5420         rc = mwl8k_load_firmware(hw);
5421         if (rc)
5422                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5423
5424         /* Reclaim memory once firmware is successfully loaded */
5425         mwl8k_release_firmware(priv);
5426
5427         if (rc && count) {
5428                 /* FW did not start successfully;
5429                  * lets try one more time
5430                  */
5431                 count--;
5432                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5433                 msleep(20);
5434                 goto retry;
5435         }
5436
5437         return rc;
5438 }
5439
5440 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5441 {
5442         struct mwl8k_priv *priv = hw->priv;
5443         int rc = 0;
5444         int i;
5445
5446         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5447                 rc = mwl8k_txq_init(hw, i);
5448                 if (rc)
5449                         break;
5450                 if (priv->ap_fw)
5451                         iowrite32(priv->txq[i].txd_dma,
5452                                   priv->sram + priv->txq_offset[i]);
5453         }
5454         return rc;
5455 }
5456
5457 /* initialize hw after successfully loading a firmware image */
5458 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5459 {
5460         struct mwl8k_priv *priv = hw->priv;
5461         int rc = 0;
5462         int i;
5463
5464         if (priv->ap_fw) {
5465                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5466                 if (priv->rxd_ops == NULL) {
5467                         wiphy_err(hw->wiphy,
5468                                   "Driver does not have AP firmware image support for this hardware\n");
5469                         goto err_stop_firmware;
5470                 }
5471         } else {
5472                 priv->rxd_ops = &rxd_sta_ops;
5473         }
5474
5475         priv->sniffer_enabled = false;
5476         priv->wmm_enabled = false;
5477         priv->pending_tx_pkts = 0;
5478
5479         rc = mwl8k_rxq_init(hw, 0);
5480         if (rc)
5481                 goto err_stop_firmware;
5482         rxq_refill(hw, 0, INT_MAX);
5483
5484         /* For the sta firmware, we need to know the dma addresses of tx queues
5485          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5486          * prior to issuing this command.  But for the AP case, we learn the
5487          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5488          * case we must initialize the tx queues after.
5489          */
5490         priv->num_ampdu_queues = 0;
5491         if (!priv->ap_fw) {
5492                 rc = mwl8k_init_txqs(hw);
5493                 if (rc)
5494                         goto err_free_queues;
5495         }
5496
5497         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5498         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5499         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5500                   MWL8K_A2H_INT_BA_WATCHDOG,
5501                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5502         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5503                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5504
5505         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5506                          IRQF_SHARED, MWL8K_NAME, hw);
5507         if (rc) {
5508                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5509                 goto err_free_queues;
5510         }
5511
5512         /*
5513          * When hw restart is requested,
5514          * mac80211 will take care of clearing
5515          * the ampdu streams, so do not clear
5516          * the ampdu state here
5517          */
5518         if (!priv->hw_restart_in_progress)
5519                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5520
5521         /*
5522          * Temporarily enable interrupts.  Initial firmware host
5523          * commands use interrupts and avoid polling.  Disable
5524          * interrupts when done.
5525          */
5526         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5527
5528         /* Get config data, mac addrs etc */
5529         if (priv->ap_fw) {
5530                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5531                 if (!rc)
5532                         rc = mwl8k_init_txqs(hw);
5533                 if (!rc)
5534                         rc = mwl8k_cmd_set_hw_spec(hw);
5535         } else {
5536                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5537         }
5538         if (rc) {
5539                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5540                 goto err_free_irq;
5541         }
5542
5543         /* Turn radio off */
5544         rc = mwl8k_cmd_radio_disable(hw);
5545         if (rc) {
5546                 wiphy_err(hw->wiphy, "Cannot disable\n");
5547                 goto err_free_irq;
5548         }
5549
5550         /* Clear MAC address */
5551         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5552         if (rc) {
5553                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5554                 goto err_free_irq;
5555         }
5556
5557         /* Disable interrupts */
5558         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5559         free_irq(priv->pdev->irq, hw);
5560
5561         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5562                    priv->device_info->part_name,
5563                    priv->hw_rev, hw->wiphy->perm_addr,
5564                    priv->ap_fw ? "AP" : "STA",
5565                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5566                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5567
5568         return 0;
5569
5570 err_free_irq:
5571         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5572         free_irq(priv->pdev->irq, hw);
5573
5574 err_free_queues:
5575         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5576                 mwl8k_txq_deinit(hw, i);
5577         mwl8k_rxq_deinit(hw, 0);
5578
5579 err_stop_firmware:
5580         mwl8k_hw_reset(priv);
5581
5582         return rc;
5583 }
5584
5585 /*
5586  * invoke mwl8k_reload_firmware to change the firmware image after the device
5587  * has already been registered
5588  */
5589 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5590 {
5591         int i, rc = 0;
5592         struct mwl8k_priv *priv = hw->priv;
5593         struct mwl8k_vif *vif, *tmp_vif;
5594
5595         mwl8k_stop(hw);
5596         mwl8k_rxq_deinit(hw, 0);
5597
5598         /*
5599          * All the existing interfaces are re-added by the ieee80211_reconfig;
5600          * which means driver should remove existing interfaces before calling
5601          * ieee80211_restart_hw
5602          */
5603         if (priv->hw_restart_in_progress)
5604                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5605                         mwl8k_remove_vif(priv, vif);
5606
5607         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5608                 mwl8k_txq_deinit(hw, i);
5609
5610         rc = mwl8k_init_firmware(hw, fw_image, false);
5611         if (rc)
5612                 goto fail;
5613
5614         rc = mwl8k_probe_hw(hw);
5615         if (rc)
5616                 goto fail;
5617
5618         if (priv->hw_restart_in_progress)
5619                 return rc;
5620
5621         rc = mwl8k_start(hw);
5622         if (rc)
5623                 goto fail;
5624
5625         rc = mwl8k_config(hw, ~0);
5626         if (rc)
5627                 goto fail;
5628
5629         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5630                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5631                 if (rc)
5632                         goto fail;
5633         }
5634
5635         return rc;
5636
5637 fail:
5638         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5639         return rc;
5640 }
5641
5642 static const struct ieee80211_iface_limit ap_if_limits[] = {
5643         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
5644 };
5645
5646 static const struct ieee80211_iface_combination ap_if_comb = {
5647         .limits = ap_if_limits,
5648         .n_limits = ARRAY_SIZE(ap_if_limits),
5649         .max_interfaces = 8,
5650         .num_different_channels = 1,
5651 };
5652
5653
5654 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5655 {
5656         struct ieee80211_hw *hw = priv->hw;
5657         int i, rc;
5658
5659         rc = mwl8k_load_firmware(hw);
5660         mwl8k_release_firmware(priv);
5661         if (rc) {
5662                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5663                 return rc;
5664         }
5665
5666         /*
5667          * Extra headroom is the size of the required DMA header
5668          * minus the size of the smallest 802.11 frame (CTS frame).
5669          */
5670         hw->extra_tx_headroom =
5671                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5672
5673         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5674
5675         hw->channel_change_time = 10;
5676
5677         hw->queues = MWL8K_TX_WMM_QUEUES;
5678
5679         /* Set rssi values to dBm */
5680         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5681
5682         /*
5683          * Ask mac80211 to not to trigger PS mode
5684          * based on PM bit of incoming frames.
5685          */
5686         if (priv->ap_fw)
5687                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5688
5689         hw->vif_data_size = sizeof(struct mwl8k_vif);
5690         hw->sta_data_size = sizeof(struct mwl8k_sta);
5691
5692         priv->macids_used = 0;
5693         INIT_LIST_HEAD(&priv->vif_list);
5694
5695         /* Set default radio state and preamble */
5696         priv->radio_on = false;
5697         priv->radio_short_preamble = false;
5698
5699         /* Finalize join worker */
5700         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5701         /* Handle watchdog ba events */
5702         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5703         /* To reload the firmware if it crashes */
5704         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5705
5706         /* TX reclaim and RX tasklets.  */
5707         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5708         tasklet_disable(&priv->poll_tx_task);
5709         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5710         tasklet_disable(&priv->poll_rx_task);
5711
5712         /* Power management cookie */
5713         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5714         if (priv->cookie == NULL)
5715                 return -ENOMEM;
5716
5717         mutex_init(&priv->fw_mutex);
5718         priv->fw_mutex_owner = NULL;
5719         priv->fw_mutex_depth = 0;
5720         priv->hostcmd_wait = NULL;
5721
5722         spin_lock_init(&priv->tx_lock);
5723
5724         spin_lock_init(&priv->stream_lock);
5725
5726         priv->tx_wait = NULL;
5727
5728         rc = mwl8k_probe_hw(hw);
5729         if (rc)
5730                 goto err_free_cookie;
5731
5732         hw->wiphy->interface_modes = 0;
5733
5734         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5735                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5736                 hw->wiphy->iface_combinations = &ap_if_comb;
5737                 hw->wiphy->n_iface_combinations = 1;
5738         }
5739
5740         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5741                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5742
5743         rc = ieee80211_register_hw(hw);
5744         if (rc) {
5745                 wiphy_err(hw->wiphy, "Cannot register device\n");
5746                 goto err_unprobe_hw;
5747         }
5748
5749         return 0;
5750
5751 err_unprobe_hw:
5752         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5753                 mwl8k_txq_deinit(hw, i);
5754         mwl8k_rxq_deinit(hw, 0);
5755
5756 err_free_cookie:
5757         if (priv->cookie != NULL)
5758                 pci_free_consistent(priv->pdev, 4,
5759                                 priv->cookie, priv->cookie_dma);
5760
5761         return rc;
5762 }
5763 static int mwl8k_probe(struct pci_dev *pdev,
5764                                  const struct pci_device_id *id)
5765 {
5766         static int printed_version;
5767         struct ieee80211_hw *hw;
5768         struct mwl8k_priv *priv;
5769         struct mwl8k_device_info *di;
5770         int rc;
5771
5772         if (!printed_version) {
5773                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5774                 printed_version = 1;
5775         }
5776
5777
5778         rc = pci_enable_device(pdev);
5779         if (rc) {
5780                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5781                        MWL8K_NAME);
5782                 return rc;
5783         }
5784
5785         rc = pci_request_regions(pdev, MWL8K_NAME);
5786         if (rc) {
5787                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5788                        MWL8K_NAME);
5789                 goto err_disable_device;
5790         }
5791
5792         pci_set_master(pdev);
5793
5794
5795         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5796         if (hw == NULL) {
5797                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5798                 rc = -ENOMEM;
5799                 goto err_free_reg;
5800         }
5801
5802         SET_IEEE80211_DEV(hw, &pdev->dev);
5803         pci_set_drvdata(pdev, hw);
5804
5805         priv = hw->priv;
5806         priv->hw = hw;
5807         priv->pdev = pdev;
5808         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5809
5810
5811         priv->sram = pci_iomap(pdev, 0, 0x10000);
5812         if (priv->sram == NULL) {
5813                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5814                 goto err_iounmap;
5815         }
5816
5817         /*
5818          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5819          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5820          */
5821         priv->regs = pci_iomap(pdev, 1, 0x10000);
5822         if (priv->regs == NULL) {
5823                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5824                 if (priv->regs == NULL) {
5825                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5826                         goto err_iounmap;
5827                 }
5828         }
5829
5830         /*
5831          * Choose the initial fw image depending on user input.  If a second
5832          * image is available, make it the alternative image that will be
5833          * loaded if the first one fails.
5834          */
5835         init_completion(&priv->firmware_loading_complete);
5836         di = priv->device_info;
5837         if (ap_mode_default && di->fw_image_ap) {
5838                 priv->fw_pref = di->fw_image_ap;
5839                 priv->fw_alt = di->fw_image_sta;
5840         } else if (!ap_mode_default && di->fw_image_sta) {
5841                 priv->fw_pref = di->fw_image_sta;
5842                 priv->fw_alt = di->fw_image_ap;
5843         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5844                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5845                 priv->fw_pref = di->fw_image_sta;
5846         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5847                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5848                 priv->fw_pref = di->fw_image_ap;
5849         }
5850         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5851         if (rc)
5852                 goto err_stop_firmware;
5853
5854         priv->hw_restart_in_progress = false;
5855
5856         return rc;
5857
5858 err_stop_firmware:
5859         mwl8k_hw_reset(priv);
5860
5861 err_iounmap:
5862         if (priv->regs != NULL)
5863                 pci_iounmap(pdev, priv->regs);
5864
5865         if (priv->sram != NULL)
5866                 pci_iounmap(pdev, priv->sram);
5867
5868         pci_set_drvdata(pdev, NULL);
5869         ieee80211_free_hw(hw);
5870
5871 err_free_reg:
5872         pci_release_regions(pdev);
5873
5874 err_disable_device:
5875         pci_disable_device(pdev);
5876
5877         return rc;
5878 }
5879
5880 static void mwl8k_remove(struct pci_dev *pdev)
5881 {
5882         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5883         struct mwl8k_priv *priv;
5884         int i;
5885
5886         if (hw == NULL)
5887                 return;
5888         priv = hw->priv;
5889
5890         wait_for_completion(&priv->firmware_loading_complete);
5891
5892         if (priv->fw_state == FW_STATE_ERROR) {
5893                 mwl8k_hw_reset(priv);
5894                 goto unmap;
5895         }
5896
5897         ieee80211_stop_queues(hw);
5898
5899         ieee80211_unregister_hw(hw);
5900
5901         /* Remove TX reclaim and RX tasklets.  */
5902         tasklet_kill(&priv->poll_tx_task);
5903         tasklet_kill(&priv->poll_rx_task);
5904
5905         /* Stop hardware */
5906         mwl8k_hw_reset(priv);
5907
5908         /* Return all skbs to mac80211 */
5909         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5910                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5911
5912         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5913                 mwl8k_txq_deinit(hw, i);
5914
5915         mwl8k_rxq_deinit(hw, 0);
5916
5917         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5918
5919 unmap:
5920         pci_iounmap(pdev, priv->regs);
5921         pci_iounmap(pdev, priv->sram);
5922         pci_set_drvdata(pdev, NULL);
5923         ieee80211_free_hw(hw);
5924         pci_release_regions(pdev);
5925         pci_disable_device(pdev);
5926 }
5927
5928 static struct pci_driver mwl8k_driver = {
5929         .name           = MWL8K_NAME,
5930         .id_table       = mwl8k_pci_id_table,
5931         .probe          = mwl8k_probe,
5932         .remove         = mwl8k_remove,
5933 };
5934
5935 module_pci_driver(mwl8k_driver);
5936
5937 MODULE_DESCRIPTION(MWL8K_DESC);
5938 MODULE_VERSION(MWL8K_VERSION);
5939 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5940 MODULE_LICENSE("GPL");