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 /* txpriorities are mapped with hw queues.
 105  * Each hw queue has a txpriority.
 106  */
 107 #define TOTAL_HW_TX_QUEUES      8
 108
 109 /* Each HW queue can have one AMPDU stream.
 110  * But, because one of the hw queue is reserved,
 111  * maximum AMPDU queues that can be created are
 112  * one short of total tx queues.
 113  */
 114 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
 115
 116 struct rxd_ops {
 117         int rxd_size;
 118         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 119         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 120         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 121                            __le16 *qos, s8 *noise);
 122 };
 123
 124 struct mwl8k_device_info {
 125         char *part_name;
 126         char *helper_image;
 127         char *fw_image_sta;
 128         char *fw_image_ap;
 129         struct rxd_ops *ap_rxd_ops;
 130         u32 fw_api_ap;
 131 };
 132
 133 struct mwl8k_rx_queue {
 134         int rxd_count;
 135
 136         /* hw receives here */
 137         int head;
 138
 139         /* refill descs here */
 140         int tail;
 141
 142         void *rxd;
 143         dma_addr_t rxd_dma;
 144         struct {
 145                 struct sk_buff *skb;
 146                 DEFINE_DMA_UNMAP_ADDR(dma);
 147         } *buf;
 148 };
 149
 150 struct mwl8k_tx_queue {
 151         /* hw transmits here */
 152         int head;
 153
 154         /* sw appends here */
 155         int tail;
 156
 157         unsigned int len;
 158         struct mwl8k_tx_desc *txd;
 159         dma_addr_t txd_dma;
 160         struct sk_buff **skb;
 161 };
 162
 163 enum {
 164         AMPDU_NO_STREAM,
 165         AMPDU_STREAM_NEW,
 166         AMPDU_STREAM_IN_PROGRESS,
 167         AMPDU_STREAM_ACTIVE,
 168 };
 169
 170 struct mwl8k_ampdu_stream {
 171         struct ieee80211_sta *sta;
 172         u8 tid;
 173         u8 state;
 174         u8 idx;
 175 };
 176
 177 struct mwl8k_priv {
 178         struct ieee80211_hw *hw;
 179         struct pci_dev *pdev;
 180         int irq;
 181
 182         struct mwl8k_device_info *device_info;
 183
 184         void __iomem *sram;
 185         void __iomem *regs;
 186
 187         /* firmware */
 188         const struct firmware *fw_helper;
 189         const struct firmware *fw_ucode;
 190
 191         /* hardware/firmware parameters */
 192         bool ap_fw;
 193         struct rxd_ops *rxd_ops;
 194         struct ieee80211_supported_band band_24;
 195         struct ieee80211_channel channels_24[14];
 196         struct ieee80211_rate rates_24[14];
 197         struct ieee80211_supported_band band_50;
 198         struct ieee80211_channel channels_50[4];
 199         struct ieee80211_rate rates_50[9];
 200         u32 ap_macids_supported;
 201         u32 sta_macids_supported;
 202
 203         /* Ampdu stream information */
 204         u8 num_ampdu_queues;
 205         spinlock_t stream_lock;
 206         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 207         struct work_struct watchdog_ba_handle;
 208
 209         /* firmware access */
 210         struct mutex fw_mutex;
 211         struct task_struct *fw_mutex_owner;
 212         struct task_struct *hw_restart_owner;
 213         int fw_mutex_depth;
 214         struct completion *hostcmd_wait;
 215
 216         atomic_t watchdog_event_pending;
 217
 218         /* lock held over TX and TX reap */
 219         spinlock_t tx_lock;
 220
 221         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 222         struct completion *tx_wait;
 223
 224         /* List of interfaces.  */
 225         u32 macids_used;
 226         struct list_head vif_list;
 227
 228         /* power management status cookie from firmware */
 229         u32 *cookie;
 230         dma_addr_t cookie_dma;
 231
 232         u16 num_mcaddrs;
 233         u8 hw_rev;
 234         u32 fw_rev;
 235
 236         /*
 237          * Running count of TX packets in flight, to avoid
 238          * iterating over the transmit rings each time.
 239          */
 240         int pending_tx_pkts;
 241
 242         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 243         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 244         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 245
 246         bool radio_on;
 247         bool radio_short_preamble;
 248         bool sniffer_enabled;
 249         bool wmm_enabled;
 250
 251         /* XXX need to convert this to handle multiple interfaces */
 252         bool capture_beacon;
 253         u8 capture_bssid[ETH_ALEN];
 254         struct sk_buff *beacon_skb;
 255
 256         /*
 257          * This FJ worker has to be global as it is scheduled from the
 258          * RX handler.  At this point we don't know which interface it
 259          * belongs to until the list of bssids waiting to complete join
 260          * is checked.
 261          */
 262         struct work_struct finalize_join_worker;
 263
 264         /* Tasklet to perform TX reclaim.  */
 265         struct tasklet_struct poll_tx_task;
 266
 267         /* Tasklet to perform RX.  */
 268         struct tasklet_struct poll_rx_task;
 269
 270         /* Most recently reported noise in dBm */
 271         s8 noise;
 272
 273         /*
 274          * preserve the queue configurations so they can be restored if/when
 275          * the firmware image is swapped.
 276          */
 277         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 278
 279         /* To perform the task of reloading the firmware */
 280         struct work_struct fw_reload;
 281         bool hw_restart_in_progress;
 282
 283         /* async firmware loading state */
 284         unsigned fw_state;
 285         char *fw_pref;
 286         char *fw_alt;
 287         struct completion firmware_loading_complete;
 288 };
 289
 290 #define MAX_WEP_KEY_LEN         13
 291 #define NUM_WEP_KEYS            4
 292
 293 /* Per interface specific private data */
 294 struct mwl8k_vif {
 295         struct list_head list;
 296         struct ieee80211_vif *vif;
 297
 298         /* Firmware macid for this vif.  */
 299         int macid;
 300
 301         /* Non AMPDU sequence number assigned by driver.  */
 302         u16 seqno;
 303
 304         /* Saved WEP keys */
 305         struct {
 306                 u8 enabled;
 307                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 308         } wep_key_conf[NUM_WEP_KEYS];
 309
 310         /* BSSID */
 311         u8 bssid[ETH_ALEN];
 312
 313         /* A flag to indicate is HW crypto is enabled for this bssid */
 314         bool is_hw_crypto_enabled;
 315 };
 316 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 317 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 318
 319 struct tx_traffic_info {
 320         u32 start_time;
 321         u32 pkts;
 322 };
 323
 324 #define MWL8K_MAX_TID 8
 325 struct mwl8k_sta {
 326         /* Index into station database. Returned by UPDATE_STADB.  */
 327         u8 peer_id;
 328         u8 is_ampdu_allowed;
 329         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 330 };
 331 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 332
 333 static const struct ieee80211_channel mwl8k_channels_24[] = {
 334         { .center_freq = 2412, .hw_value = 1, },
 335         { .center_freq = 2417, .hw_value = 2, },
 336         { .center_freq = 2422, .hw_value = 3, },
 337         { .center_freq = 2427, .hw_value = 4, },
 338         { .center_freq = 2432, .hw_value = 5, },
 339         { .center_freq = 2437, .hw_value = 6, },
 340         { .center_freq = 2442, .hw_value = 7, },
 341         { .center_freq = 2447, .hw_value = 8, },
 342         { .center_freq = 2452, .hw_value = 9, },
 343         { .center_freq = 2457, .hw_value = 10, },
 344         { .center_freq = 2462, .hw_value = 11, },
 345         { .center_freq = 2467, .hw_value = 12, },
 346         { .center_freq = 2472, .hw_value = 13, },
 347         { .center_freq = 2484, .hw_value = 14, },
 348 };
 349
 350 static const struct ieee80211_rate mwl8k_rates_24[] = {
 351         { .bitrate = 10, .hw_value = 2, },
 352         { .bitrate = 20, .hw_value = 4, },
 353         { .bitrate = 55, .hw_value = 11, },
 354         { .bitrate = 110, .hw_value = 22, },
 355         { .bitrate = 220, .hw_value = 44, },
 356         { .bitrate = 60, .hw_value = 12, },
 357         { .bitrate = 90, .hw_value = 18, },
 358         { .bitrate = 120, .hw_value = 24, },
 359         { .bitrate = 180, .hw_value = 36, },
 360         { .bitrate = 240, .hw_value = 48, },
 361         { .bitrate = 360, .hw_value = 72, },
 362         { .bitrate = 480, .hw_value = 96, },
 363         { .bitrate = 540, .hw_value = 108, },
 364         { .bitrate = 720, .hw_value = 144, },
 365 };
 366
 367 static const struct ieee80211_channel mwl8k_channels_50[] = {
 368         { .center_freq = 5180, .hw_value = 36, },
 369         { .center_freq = 5200, .hw_value = 40, },
 370         { .center_freq = 5220, .hw_value = 44, },
 371         { .center_freq = 5240, .hw_value = 48, },
 372 };
 373
 374 static const struct ieee80211_rate mwl8k_rates_50[] = {
 375         { .bitrate = 60, .hw_value = 12, },
 376         { .bitrate = 90, .hw_value = 18, },
 377         { .bitrate = 120, .hw_value = 24, },
 378         { .bitrate = 180, .hw_value = 36, },
 379         { .bitrate = 240, .hw_value = 48, },
 380         { .bitrate = 360, .hw_value = 72, },
 381         { .bitrate = 480, .hw_value = 96, },
 382         { .bitrate = 540, .hw_value = 108, },
 383         { .bitrate = 720, .hw_value = 144, },
 384 };
 385
 386 /* Set or get info from Firmware */
 387 #define MWL8K_CMD_GET                   0x0000
 388 #define MWL8K_CMD_SET                   0x0001
 389 #define MWL8K_CMD_SET_LIST              0x0002
 390
 391 /* Firmware command codes */
 392 #define MWL8K_CMD_CODE_DNLD             0x0001
 393 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 394 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 395 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 396 #define MWL8K_CMD_GET_STAT              0x0014
 397 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 398 #define MWL8K_CMD_RF_TX_POWER           0x001e
 399 #define MWL8K_CMD_TX_POWER              0x001f
 400 #define MWL8K_CMD_RF_ANTENNA            0x0020
 401 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 402 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 403 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 404 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 405 #define MWL8K_CMD_SET_AID               0x010d
 406 #define MWL8K_CMD_SET_RATE              0x0110
 407 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 408 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 409 #define MWL8K_CMD_SET_SLOT              0x0114
 410 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 411 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 412 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 413 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 414 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 415 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 416 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 417 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 418 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 419 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 420 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 421 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 422 #define MWL8K_CMD_UPDATE_STADB          0x1123
 423 #define MWL8K_CMD_BASTREAM              0x1125
 424
 425 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 426 {
 427         u16 command = le16_to_cpu(cmd);
 428
 429 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 430                                         snprintf(buf, bufsize, "%s", #x);\
 431                                         return buf;\
 432                                         } while (0)
 433         switch (command & ~0x8000) {
 434                 MWL8K_CMDNAME(CODE_DNLD);
 435                 MWL8K_CMDNAME(GET_HW_SPEC);
 436                 MWL8K_CMDNAME(SET_HW_SPEC);
 437                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 438                 MWL8K_CMDNAME(GET_STAT);
 439                 MWL8K_CMDNAME(RADIO_CONTROL);
 440                 MWL8K_CMDNAME(RF_TX_POWER);
 441                 MWL8K_CMDNAME(TX_POWER);
 442                 MWL8K_CMDNAME(RF_ANTENNA);
 443                 MWL8K_CMDNAME(SET_BEACON);
 444                 MWL8K_CMDNAME(SET_PRE_SCAN);
 445                 MWL8K_CMDNAME(SET_POST_SCAN);
 446                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 447                 MWL8K_CMDNAME(SET_AID);
 448                 MWL8K_CMDNAME(SET_RATE);
 449                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 450                 MWL8K_CMDNAME(RTS_THRESHOLD);
 451                 MWL8K_CMDNAME(SET_SLOT);
 452                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 453                 MWL8K_CMDNAME(SET_WMM_MODE);
 454                 MWL8K_CMDNAME(MIMO_CONFIG);
 455                 MWL8K_CMDNAME(USE_FIXED_RATE);
 456                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 457                 MWL8K_CMDNAME(SET_MAC_ADDR);
 458                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 459                 MWL8K_CMDNAME(BSS_START);
 460                 MWL8K_CMDNAME(SET_NEW_STN);
 461                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 462                 MWL8K_CMDNAME(UPDATE_STADB);
 463                 MWL8K_CMDNAME(BASTREAM);
 464                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 465         default:
 466                 snprintf(buf, bufsize, "0x%x", cmd);
 467         }
 468 #undef MWL8K_CMDNAME
 469
 470         return buf;
 471 }
 472
 473 /* Hardware and firmware reset */
 474 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 475 {
 476         iowrite32(MWL8K_H2A_INT_RESET,
 477                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 478         iowrite32(MWL8K_H2A_INT_RESET,
 479                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 480         msleep(20);
 481 }
 482
 483 /* Release fw image */
 484 static void mwl8k_release_fw(const struct firmware **fw)
 485 {
 486         if (*fw == NULL)
 487                 return;
 488         release_firmware(*fw);
 489         *fw = NULL;
 490 }
 491
 492 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 493 {
 494         mwl8k_release_fw(&priv->fw_ucode);
 495         mwl8k_release_fw(&priv->fw_helper);
 496 }
 497
 498 /* states for asynchronous f/w loading */
 499 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 500 enum {
 501         FW_STATE_INIT = 0,
 502         FW_STATE_LOADING_PREF,
 503         FW_STATE_LOADING_ALT,
 504         FW_STATE_ERROR,
 505 };
 506
 507 /* Request fw image */
 508 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 509                             const char *fname, const struct firmware **fw,
 510                             bool nowait)
 511 {
 512         /* release current image */
 513         if (*fw != NULL)
 514                 mwl8k_release_fw(fw);
 515
 516         if (nowait)
 517                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 518                                                &priv->pdev->dev, GFP_KERNEL,
 519                                                priv, mwl8k_fw_state_machine);
 520         else
 521                 return request_firmware(fw, fname, &priv->pdev->dev);
 522 }
 523
 524 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 525                                   bool nowait)
 526 {
 527         struct mwl8k_device_info *di = priv->device_info;
 528         int rc;
 529
 530         if (di->helper_image != NULL) {
 531                 if (nowait)
 532                         rc = mwl8k_request_fw(priv, di->helper_image,
 533                                               &priv->fw_helper, true);
 534                 else
 535                         rc = mwl8k_request_fw(priv, di->helper_image,
 536                                               &priv->fw_helper, false);
 537                 if (rc)
 538                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 539                                pci_name(priv->pdev), di->helper_image);
 540
 541                 if (rc || nowait)
 542                         return rc;
 543         }
 544
 545         if (nowait) {
 546                 /*
 547                  * if we get here, no helper image is needed.  Skip the
 548                  * FW_STATE_INIT state.
 549                  */
 550                 priv->fw_state = FW_STATE_LOADING_PREF;
 551                 rc = mwl8k_request_fw(priv, fw_image,
 552                                       &priv->fw_ucode,
 553                                       true);
 554         } else
 555                 rc = mwl8k_request_fw(priv, fw_image,
 556                                       &priv->fw_ucode, false);
 557         if (rc) {
 558                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 559                        pci_name(priv->pdev), fw_image);
 560                 mwl8k_release_fw(&priv->fw_helper);
 561                 return rc;
 562         }
 563
 564         return 0;
 565 }
 566
 567 struct mwl8k_cmd_pkt {
 568         __le16  code;
 569         __le16  length;
 570         __u8    seq_num;
 571         __u8    macid;
 572         __le16  result;
 573         char    payload[0];
 574 } __packed;
 575
 576 /*
 577  * Firmware loading.
 578  */
 579 static int
 580 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 581 {
 582         void __iomem *regs = priv->regs;
 583         dma_addr_t dma_addr;
 584         int loops;
 585
 586         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 587         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 588                 return -ENOMEM;
 589
 590         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 591         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 592         iowrite32(MWL8K_H2A_INT_DOORBELL,
 593                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 594         iowrite32(MWL8K_H2A_INT_DUMMY,
 595                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 596
 597         loops = 1000;
 598         do {
 599                 u32 int_code;
 600
 601                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 602                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 603                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 604                         break;
 605                 }
 606
 607                 cond_resched();
 608                 udelay(1);
 609         } while (--loops);
 610
 611         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 612
 613         return loops ? 0 : -ETIMEDOUT;
 614 }
 615
 616 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 617                                 const u8 *data, size_t length)
 618 {
 619         struct mwl8k_cmd_pkt *cmd;
 620         int done;
 621         int rc = 0;
 622
 623         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 624         if (cmd == NULL)
 625                 return -ENOMEM;
 626
 627         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 628         cmd->seq_num = 0;
 629         cmd->macid = 0;
 630         cmd->result = 0;
 631
 632         done = 0;
 633         while (length) {
 634                 int block_size = length > 256 ? 256 : length;
 635
 636                 memcpy(cmd->payload, data + done, block_size);
 637                 cmd->length = cpu_to_le16(block_size);
 638
 639                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 640                                                 sizeof(*cmd) + block_size);
 641                 if (rc)
 642                         break;
 643
 644                 done += block_size;
 645                 length -= block_size;
 646         }
 647
 648         if (!rc) {
 649                 cmd->length = 0;
 650                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 651         }
 652
 653         kfree(cmd);
 654
 655         return rc;
 656 }
 657
 658 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 659                                 const u8 *data, size_t length)
 660 {
 661         unsigned char *buffer;
 662         int may_continue, rc = 0;
 663         u32 done, prev_block_size;
 664
 665         buffer = kmalloc(1024, GFP_KERNEL);
 666         if (buffer == NULL)
 667                 return -ENOMEM;
 668
 669         done = 0;
 670         prev_block_size = 0;
 671         may_continue = 1000;
 672         while (may_continue > 0) {
 673                 u32 block_size;
 674
 675                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 676                 if (block_size & 1) {
 677                         block_size &= ~1;
 678                         may_continue--;
 679                 } else {
 680                         done += prev_block_size;
 681                         length -= prev_block_size;
 682                 }
 683
 684                 if (block_size > 1024 || block_size > length) {
 685                         rc = -EOVERFLOW;
 686                         break;
 687                 }
 688
 689                 if (length == 0) {
 690                         rc = 0;
 691                         break;
 692                 }
 693
 694                 if (block_size == 0) {
 695                         rc = -EPROTO;
 696                         may_continue--;
 697                         udelay(1);
 698                         continue;
 699                 }
 700
 701                 prev_block_size = block_size;
 702                 memcpy(buffer, data + done, block_size);
 703
 704                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 705                 if (rc)
 706                         break;
 707         }
 708
 709         if (!rc && length != 0)
 710                 rc = -EREMOTEIO;
 711
 712         kfree(buffer);
 713
 714         return rc;
 715 }
 716
 717 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 718 {
 719         struct mwl8k_priv *priv = hw->priv;
 720         const struct firmware *fw = priv->fw_ucode;
 721         int rc;
 722         int loops;
 723
 724         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 725                 const struct firmware *helper = priv->fw_helper;
 726
 727                 if (helper == NULL) {
 728                         printk(KERN_ERR "%s: helper image needed but none "
 729                                "given\n", pci_name(priv->pdev));
 730                         return -EINVAL;
 731                 }
 732
 733                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 734                 if (rc) {
 735                         printk(KERN_ERR "%s: unable to load firmware "
 736                                "helper image\n", pci_name(priv->pdev));
 737                         return rc;
 738                 }
 739                 msleep(20);
 740
 741                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 742         } else {
 743                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 744         }
 745
 746         if (rc) {
 747                 printk(KERN_ERR "%s: unable to load firmware image\n",
 748                        pci_name(priv->pdev));
 749                 return rc;
 750         }
 751
 752         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 753
 754         loops = 500000;
 755         do {
 756                 u32 ready_code;
 757
 758                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 759                 if (ready_code == MWL8K_FWAP_READY) {
 760                         priv->ap_fw = true;
 761                         break;
 762                 } else if (ready_code == MWL8K_FWSTA_READY) {
 763                         priv->ap_fw = false;
 764                         break;
 765                 }
 766
 767                 cond_resched();
 768                 udelay(1);
 769         } while (--loops);
 770
 771         return loops ? 0 : -ETIMEDOUT;
 772 }
 773
 774
 775 /* DMA header used by firmware and hardware.  */
 776 struct mwl8k_dma_data {
 777         __le16 fwlen;
 778         struct ieee80211_hdr wh;
 779         char data[0];
 780 } __packed;
 781
 782 /* Routines to add/remove DMA header from skb.  */
 783 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 784 {
 785         struct mwl8k_dma_data *tr;
 786         int hdrlen;
 787
 788         tr = (struct mwl8k_dma_data *)skb->data;
 789         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 790
 791         if (hdrlen != sizeof(tr->wh)) {
 792                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 793                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 794                         *((__le16 *)(tr->data - 2)) = qos;
 795                 } else {
 796                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 797                 }
 798         }
 799
 800         if (hdrlen != sizeof(*tr))
 801                 skb_pull(skb, sizeof(*tr) - hdrlen);
 802 }
 803
 804 #define REDUCED_TX_HEADROOM     8
 805
 806 static void
 807 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 808                                                 int head_pad, int tail_pad)
 809 {
 810         struct ieee80211_hdr *wh;
 811         int hdrlen;
 812         int reqd_hdrlen;
 813         struct mwl8k_dma_data *tr;
 814
 815         /*
 816          * Add a firmware DMA header; the firmware requires that we
 817          * present a 2-byte payload length followed by a 4-address
 818          * header (without QoS field), followed (optionally) by any
 819          * WEP/ExtIV header (but only filled in for CCMP).
 820          */
 821         wh = (struct ieee80211_hdr *)skb->data;
 822
 823         hdrlen = ieee80211_hdrlen(wh->frame_control);
 824
 825         /*
 826          * Check if skb_resize is required because of
 827          * tx_headroom adjustment.
 828          */
 829         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 830                                                 + REDUCED_TX_HEADROOM))) {
 831                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 832
 833                         wiphy_err(priv->hw->wiphy,
 834                                         "Failed to reallocate TX buffer\n");
 835                         return;
 836                 }
 837                 skb->truesize += REDUCED_TX_HEADROOM;
 838         }
 839
 840         reqd_hdrlen = sizeof(*tr) + head_pad;
 841
 842         if (hdrlen != reqd_hdrlen)
 843                 skb_push(skb, reqd_hdrlen - hdrlen);
 844
 845         if (ieee80211_is_data_qos(wh->frame_control))
 846                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 847
 848         tr = (struct mwl8k_dma_data *)skb->data;
 849         if (wh != &tr->wh)
 850                 memmove(&tr->wh, wh, hdrlen);
 851         if (hdrlen != sizeof(tr->wh))
 852                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 853
 854         /*
 855          * Firmware length is the length of the fully formed "802.11
 856          * payload".  That is, everything except for the 802.11 header.
 857          * This includes all crypto material including the MIC.
 858          */
 859         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 860 }
 861
 862 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 863                 struct sk_buff *skb)
 864 {
 865         struct ieee80211_hdr *wh;
 866         struct ieee80211_tx_info *tx_info;
 867         struct ieee80211_key_conf *key_conf;
 868         int data_pad;
 869         int head_pad = 0;
 870
 871         wh = (struct ieee80211_hdr *)skb->data;
 872
 873         tx_info = IEEE80211_SKB_CB(skb);
 874
 875         key_conf = NULL;
 876         if (ieee80211_is_data(wh->frame_control))
 877                 key_conf = tx_info->control.hw_key;
 878
 879         /*
 880          * Make sure the packet header is in the DMA header format (4-address
 881          * without QoS), and add head & tail padding when HW crypto is enabled.
 882          *
 883          * We have the following trailer padding requirements:
 884          * - WEP: 4 trailer bytes (ICV)
 885          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 886          * - CCMP: 8 trailer bytes (MIC)
 887          */
 888         data_pad = 0;
 889         if (key_conf != NULL) {
 890                 head_pad = key_conf->iv_len;
 891                 switch (key_conf->cipher) {
 892                 case WLAN_CIPHER_SUITE_WEP40:
 893                 case WLAN_CIPHER_SUITE_WEP104:
 894                         data_pad = 4;
 895                         break;
 896                 case WLAN_CIPHER_SUITE_TKIP:
 897                         data_pad = 12;
 898                         break;
 899                 case WLAN_CIPHER_SUITE_CCMP:
 900                         data_pad = 8;
 901                         break;
 902                 }
 903         }
 904         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 905 }
 906
 907 /*
 908  * Packet reception for 88w8366 AP firmware.
 909  */
 910 struct mwl8k_rxd_8366_ap {
 911         __le16 pkt_len;
 912         __u8 sq2;
 913         __u8 rate;
 914         __le32 pkt_phys_addr;
 915         __le32 next_rxd_phys_addr;
 916         __le16 qos_control;
 917         __le16 htsig2;
 918         __le32 hw_rssi_info;
 919         __le32 hw_noise_floor_info;
 920         __u8 noise_floor;
 921         __u8 pad0[3];
 922         __u8 rssi;
 923         __u8 rx_status;
 924         __u8 channel;
 925         __u8 rx_ctrl;
 926 } __packed;
 927
 928 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 929 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 930 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 931
 932 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 933
 934 /* 8366 AP rx_status bits */
 935 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 936 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 937 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 938 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 939 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 940
 941 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 942 {
 943         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 944
 945         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 946         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 947 }
 948
 949 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 950 {
 951         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 952
 953         rxd->pkt_len = cpu_to_le16(len);
 954         rxd->pkt_phys_addr = cpu_to_le32(addr);
 955         wmb();
 956         rxd->rx_ctrl = 0;
 957 }
 958
 959 static int
 960 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 961                           __le16 *qos, s8 *noise)
 962 {
 963         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 964
 965         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 966                 return -1;
 967         rmb();
 968
 969         memset(status, 0, sizeof(*status));
 970
 971         status->signal = -rxd->rssi;
 972         *noise = -rxd->noise_floor;
 973
 974         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 975                 status->flag |= RX_FLAG_HT;
 976                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 977                         status->flag |= RX_FLAG_40MHZ;
 978                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 979         } else {
 980                 int i;
 981
 982                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 983                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 984                                 status->rate_idx = i;
 985                                 break;
 986                         }
 987                 }
 988         }
 989
 990         if (rxd->channel > 14) {
 991                 status->band = IEEE80211_BAND_5GHZ;
 992                 if (!(status->flag & RX_FLAG_HT))
 993                         status->rate_idx -= 5;
 994         } else {
 995                 status->band = IEEE80211_BAND_2GHZ;
 996         }
 997         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 998                                                       status->band);
 999
1000         *qos = rxd->qos_control;
1001
1002         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1003             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1004             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1005                 status->flag |= RX_FLAG_MMIC_ERROR;
1006
1007         return le16_to_cpu(rxd->pkt_len);
1008 }
1009
1010 static struct rxd_ops rxd_8366_ap_ops = {
1011         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
1012         .rxd_init       = mwl8k_rxd_8366_ap_init,
1013         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1014         .rxd_process    = mwl8k_rxd_8366_ap_process,
1015 };
1016
1017 /*
1018  * Packet reception for STA firmware.
1019  */
1020 struct mwl8k_rxd_sta {
1021         __le16 pkt_len;
1022         __u8 link_quality;
1023         __u8 noise_level;
1024         __le32 pkt_phys_addr;
1025         __le32 next_rxd_phys_addr;
1026         __le16 qos_control;
1027         __le16 rate_info;
1028         __le32 pad0[4];
1029         __u8 rssi;
1030         __u8 channel;
1031         __le16 pad1;
1032         __u8 rx_ctrl;
1033         __u8 rx_status;
1034         __u8 pad2[2];
1035 } __packed;
1036
1037 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1038 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1039 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1040 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1041 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1042 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1043
1044 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1045 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1046 /* ICV=0 or MIC=1 */
1047 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1048 /* Key is uploaded only in failure case */
1049 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1050
1051 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1052 {
1053         struct mwl8k_rxd_sta *rxd = _rxd;
1054
1055         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1056         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1057 }
1058
1059 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1060 {
1061         struct mwl8k_rxd_sta *rxd = _rxd;
1062
1063         rxd->pkt_len = cpu_to_le16(len);
1064         rxd->pkt_phys_addr = cpu_to_le32(addr);
1065         wmb();
1066         rxd->rx_ctrl = 0;
1067 }
1068
1069 static int
1070 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1071                        __le16 *qos, s8 *noise)
1072 {
1073         struct mwl8k_rxd_sta *rxd = _rxd;
1074         u16 rate_info;
1075
1076         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1077                 return -1;
1078         rmb();
1079
1080         rate_info = le16_to_cpu(rxd->rate_info);
1081
1082         memset(status, 0, sizeof(*status));
1083
1084         status->signal = -rxd->rssi;
1085         *noise = -rxd->noise_level;
1086         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1087         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1088
1089         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1090                 status->flag |= RX_FLAG_SHORTPRE;
1091         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1092                 status->flag |= RX_FLAG_40MHZ;
1093         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1094                 status->flag |= RX_FLAG_SHORT_GI;
1095         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1096                 status->flag |= RX_FLAG_HT;
1097
1098         if (rxd->channel > 14) {
1099                 status->band = IEEE80211_BAND_5GHZ;
1100                 if (!(status->flag & RX_FLAG_HT))
1101                         status->rate_idx -= 5;
1102         } else {
1103                 status->band = IEEE80211_BAND_2GHZ;
1104         }
1105         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1106                                                       status->band);
1107
1108         *qos = rxd->qos_control;
1109         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1110             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1111                 status->flag |= RX_FLAG_MMIC_ERROR;
1112
1113         return le16_to_cpu(rxd->pkt_len);
1114 }
1115
1116 static struct rxd_ops rxd_sta_ops = {
1117         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1118         .rxd_init       = mwl8k_rxd_sta_init,
1119         .rxd_refill     = mwl8k_rxd_sta_refill,
1120         .rxd_process    = mwl8k_rxd_sta_process,
1121 };
1122
1123
1124 #define MWL8K_RX_DESCS          256
1125 #define MWL8K_RX_MAXSZ          3800
1126
1127 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1128 {
1129         struct mwl8k_priv *priv = hw->priv;
1130         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1131         int size;
1132         int i;
1133
1134         rxq->rxd_count = 0;
1135         rxq->head = 0;
1136         rxq->tail = 0;
1137
1138         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1139
1140         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1141         if (rxq->rxd == NULL) {
1142                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1143                 return -ENOMEM;
1144         }
1145         memset(rxq->rxd, 0, size);
1146
1147         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1148         if (rxq->buf == NULL) {
1149                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1150                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1151                 return -ENOMEM;
1152         }
1153
1154         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1155                 int desc_size;
1156                 void *rxd;
1157                 int nexti;
1158                 dma_addr_t next_dma_addr;
1159
1160                 desc_size = priv->rxd_ops->rxd_size;
1161                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1162
1163                 nexti = i + 1;
1164                 if (nexti == MWL8K_RX_DESCS)
1165                         nexti = 0;
1166                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1167
1168                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1169         }
1170
1171         return 0;
1172 }
1173
1174 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1175 {
1176         struct mwl8k_priv *priv = hw->priv;
1177         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1178         int refilled;
1179
1180         refilled = 0;
1181         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1182                 struct sk_buff *skb;
1183                 dma_addr_t addr;
1184                 int rx;
1185                 void *rxd;
1186
1187                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1188                 if (skb == NULL)
1189                         break;
1190
1191                 addr = pci_map_single(priv->pdev, skb->data,
1192                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1193
1194                 rxq->rxd_count++;
1195                 rx = rxq->tail++;
1196                 if (rxq->tail == MWL8K_RX_DESCS)
1197                         rxq->tail = 0;
1198                 rxq->buf[rx].skb = skb;
1199                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1200
1201                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1202                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1203
1204                 refilled++;
1205         }
1206
1207         return refilled;
1208 }
1209
1210 /* Must be called only when the card's reception is completely halted */
1211 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1212 {
1213         struct mwl8k_priv *priv = hw->priv;
1214         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1215         int i;
1216
1217         if (rxq->rxd == NULL)
1218                 return;
1219
1220         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1221                 if (rxq->buf[i].skb != NULL) {
1222                         pci_unmap_single(priv->pdev,
1223                                          dma_unmap_addr(&rxq->buf[i], dma),
1224                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1225                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1226
1227                         kfree_skb(rxq->buf[i].skb);
1228                         rxq->buf[i].skb = NULL;
1229                 }
1230         }
1231
1232         kfree(rxq->buf);
1233         rxq->buf = NULL;
1234
1235         pci_free_consistent(priv->pdev,
1236                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1237                             rxq->rxd, rxq->rxd_dma);
1238         rxq->rxd = NULL;
1239 }
1240
1241
1242 /*
1243  * Scan a list of BSSIDs to process for finalize join.
1244  * Allows for extension to process multiple BSSIDs.
1245  */
1246 static inline int
1247 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1248 {
1249         return priv->capture_beacon &&
1250                 ieee80211_is_beacon(wh->frame_control) &&
1251                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1252 }
1253
1254 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1255                                      struct sk_buff *skb)
1256 {
1257         struct mwl8k_priv *priv = hw->priv;
1258
1259         priv->capture_beacon = false;
1260         memset(priv->capture_bssid, 0, ETH_ALEN);
1261
1262         /*
1263          * Use GFP_ATOMIC as rxq_process is called from
1264          * the primary interrupt handler, memory allocation call
1265          * must not sleep.
1266          */
1267         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1268         if (priv->beacon_skb != NULL)
1269                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1270 }
1271
1272 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1273                                                    u8 *bssid)
1274 {
1275         struct mwl8k_vif *mwl8k_vif;
1276
1277         list_for_each_entry(mwl8k_vif,
1278                             vif_list, list) {
1279                 if (memcmp(bssid, mwl8k_vif->bssid,
1280                            ETH_ALEN) == 0)
1281                         return mwl8k_vif;
1282         }
1283
1284         return NULL;
1285 }
1286
1287 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1288 {
1289         struct mwl8k_priv *priv = hw->priv;
1290         struct mwl8k_vif *mwl8k_vif = NULL;
1291         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1292         int processed;
1293
1294         processed = 0;
1295         while (rxq->rxd_count && limit--) {
1296                 struct sk_buff *skb;
1297                 void *rxd;
1298                 int pkt_len;
1299                 struct ieee80211_rx_status status;
1300                 struct ieee80211_hdr *wh;
1301                 __le16 qos;
1302
1303                 skb = rxq->buf[rxq->head].skb;
1304                 if (skb == NULL)
1305                         break;
1306
1307                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1308
1309                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1310                                                         &priv->noise);
1311                 if (pkt_len < 0)
1312                         break;
1313
1314                 rxq->buf[rxq->head].skb = NULL;
1315
1316                 pci_unmap_single(priv->pdev,
1317                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1318                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1319                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1320
1321                 rxq->head++;
1322                 if (rxq->head == MWL8K_RX_DESCS)
1323                         rxq->head = 0;
1324
1325                 rxq->rxd_count--;
1326
1327                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1328
1329                 /*
1330                  * Check for a pending join operation.  Save a
1331                  * copy of the beacon and schedule a tasklet to
1332                  * send a FINALIZE_JOIN command to the firmware.
1333                  */
1334                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1335                         mwl8k_save_beacon(hw, skb);
1336
1337                 if (ieee80211_has_protected(wh->frame_control)) {
1338
1339                         /* Check if hw crypto has been enabled for
1340                          * this bss. If yes, set the status flags
1341                          * accordingly
1342                          */
1343                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1344                                                                 wh->addr1);
1345
1346                         if (mwl8k_vif != NULL &&
1347                             mwl8k_vif->is_hw_crypto_enabled) {
1348                                 /*
1349                                  * When MMIC ERROR is encountered
1350                                  * by the firmware, payload is
1351                                  * dropped and only 32 bytes of
1352                                  * mwl8k Firmware header is sent
1353                                  * to the host.
1354                                  *
1355                                  * We need to add four bytes of
1356                                  * key information.  In it
1357                                  * MAC80211 expects keyidx set to
1358                                  * 0 for triggering Counter
1359                                  * Measure of MMIC failure.
1360                                  */
1361                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1362                                         struct mwl8k_dma_data *tr;
1363                                         tr = (struct mwl8k_dma_data *)skb->data;
1364                                         memset((void *)&(tr->data), 0, 4);
1365                                         pkt_len += 4;
1366                                 }
1367
1368                                 if (!ieee80211_is_auth(wh->frame_control))
1369                                         status.flag |= RX_FLAG_IV_STRIPPED |
1370                                                        RX_FLAG_DECRYPTED |
1371                                                        RX_FLAG_MMIC_STRIPPED;
1372                         }
1373                 }
1374
1375                 skb_put(skb, pkt_len);
1376                 mwl8k_remove_dma_header(skb, qos);
1377                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1378                 ieee80211_rx_irqsafe(hw, skb);
1379
1380                 processed++;
1381         }
1382
1383         return processed;
1384 }
1385
1386
1387 /*
1388  * Packet transmission.
1389  */
1390
1391 #define MWL8K_TXD_STATUS_OK                     0x00000001
1392 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1393 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1394 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1395 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1396
1397 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1398 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1399 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1400 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1401 #define MWL8K_QOS_EOSP                          0x0010
1402
1403 struct mwl8k_tx_desc {
1404         __le32 status;
1405         __u8 data_rate;
1406         __u8 tx_priority;
1407         __le16 qos_control;
1408         __le32 pkt_phys_addr;
1409         __le16 pkt_len;
1410         __u8 dest_MAC_addr[ETH_ALEN];
1411         __le32 next_txd_phys_addr;
1412         __le32 timestamp;
1413         __le16 rate_info;
1414         __u8 peer_id;
1415         __u8 tx_frag_cnt;
1416 } __packed;
1417
1418 #define MWL8K_TX_DESCS          128
1419
1420 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1421 {
1422         struct mwl8k_priv *priv = hw->priv;
1423         struct mwl8k_tx_queue *txq = priv->txq + index;
1424         int size;
1425         int i;
1426
1427         txq->len = 0;
1428         txq->head = 0;
1429         txq->tail = 0;
1430
1431         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1432
1433         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1434         if (txq->txd == NULL) {
1435                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1436                 return -ENOMEM;
1437         }
1438         memset(txq->txd, 0, size);
1439
1440         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1441         if (txq->skb == NULL) {
1442                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1443                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1444                 return -ENOMEM;
1445         }
1446
1447         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1448                 struct mwl8k_tx_desc *tx_desc;
1449                 int nexti;
1450
1451                 tx_desc = txq->txd + i;
1452                 nexti = (i + 1) % MWL8K_TX_DESCS;
1453
1454                 tx_desc->status = 0;
1455                 tx_desc->next_txd_phys_addr =
1456                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1457         }
1458
1459         return 0;
1460 }
1461
1462 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1463 {
1464         iowrite32(MWL8K_H2A_INT_PPA_READY,
1465                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1466         iowrite32(MWL8K_H2A_INT_DUMMY,
1467                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1468         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1469 }
1470
1471 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1472 {
1473         struct mwl8k_priv *priv = hw->priv;
1474         int i;
1475
1476         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1477                 struct mwl8k_tx_queue *txq = priv->txq + i;
1478                 int fw_owned = 0;
1479                 int drv_owned = 0;
1480                 int unused = 0;
1481                 int desc;
1482
1483                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1484                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1485                         u32 status;
1486
1487                         status = le32_to_cpu(tx_desc->status);
1488                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1489                                 fw_owned++;
1490                         else
1491                                 drv_owned++;
1492
1493                         if (tx_desc->pkt_len == 0)
1494                                 unused++;
1495                 }
1496
1497                 wiphy_err(hw->wiphy,
1498                           "txq[%d] len=%d head=%d tail=%d "
1499                           "fw_owned=%d drv_owned=%d unused=%d\n",
1500                           i,
1501                           txq->len, txq->head, txq->tail,
1502                           fw_owned, drv_owned, unused);
1503         }
1504 }
1505
1506 /*
1507  * Must be called with priv->fw_mutex held and tx queues stopped.
1508  */
1509 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1510
1511 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1512 {
1513         struct mwl8k_priv *priv = hw->priv;
1514         DECLARE_COMPLETION_ONSTACK(tx_wait);
1515         int retry;
1516         int rc;
1517
1518         might_sleep();
1519
1520         /* Since fw restart is in progress, allow only the firmware
1521          * commands from the restart code and block the other
1522          * commands since they are going to fail in any case since
1523          * the firmware has crashed
1524          */
1525         if (priv->hw_restart_in_progress) {
1526                 if (priv->hw_restart_owner == current)
1527                         return 0;
1528                 else
1529                         return -EBUSY;
1530         }
1531
1532         if (atomic_read(&priv->watchdog_event_pending))
1533                 return 0;
1534
1535         /*
1536          * The TX queues are stopped at this point, so this test
1537          * doesn't need to take ->tx_lock.
1538          */
1539         if (!priv->pending_tx_pkts)
1540                 return 0;
1541
1542         retry = 0;
1543         rc = 0;
1544
1545         spin_lock_bh(&priv->tx_lock);
1546         priv->tx_wait = &tx_wait;
1547         while (!rc) {
1548                 int oldcount;
1549                 unsigned long timeout;
1550
1551                 oldcount = priv->pending_tx_pkts;
1552
1553                 spin_unlock_bh(&priv->tx_lock);
1554                 timeout = wait_for_completion_timeout(&tx_wait,
1555                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1556
1557                 if (atomic_read(&priv->watchdog_event_pending)) {
1558                         spin_lock_bh(&priv->tx_lock);
1559                         priv->tx_wait = NULL;
1560                         spin_unlock_bh(&priv->tx_lock);
1561                         return 0;
1562                 }
1563
1564                 spin_lock_bh(&priv->tx_lock);
1565
1566                 if (timeout) {
1567                         WARN_ON(priv->pending_tx_pkts);
1568                         if (retry)
1569                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1570                         break;
1571                 }
1572
1573                 if (priv->pending_tx_pkts < oldcount) {
1574                         wiphy_notice(hw->wiphy,
1575                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1576                                      oldcount, priv->pending_tx_pkts);
1577                         retry = 1;
1578                         continue;
1579                 }
1580
1581                 priv->tx_wait = NULL;
1582
1583                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1584                           MWL8K_TX_WAIT_TIMEOUT_MS);
1585                 mwl8k_dump_tx_rings(hw);
1586                 priv->hw_restart_in_progress = true;
1587                 ieee80211_queue_work(hw, &priv->fw_reload);
1588
1589                 rc = -ETIMEDOUT;
1590         }
1591         priv->tx_wait = NULL;
1592         spin_unlock_bh(&priv->tx_lock);
1593
1594         return rc;
1595 }
1596
1597 #define MWL8K_TXD_SUCCESS(status)                               \
1598         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1599                      MWL8K_TXD_STATUS_OK_RETRY |                \
1600                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1601
1602 static int mwl8k_tid_queue_mapping(u8 tid)
1603 {
1604         BUG_ON(tid > 7);
1605
1606         switch (tid) {
1607         case 0:
1608         case 3:
1609                 return IEEE80211_AC_BE;
1610                 break;
1611         case 1:
1612         case 2:
1613                 return IEEE80211_AC_BK;
1614                 break;
1615         case 4:
1616         case 5:
1617                 return IEEE80211_AC_VI;
1618                 break;
1619         case 6:
1620         case 7:
1621                 return IEEE80211_AC_VO;
1622                 break;
1623         default:
1624                 return -1;
1625                 break;
1626         }
1627 }
1628
1629 /* The firmware will fill in the rate information
1630  * for each packet that gets queued in the hardware
1631  * and these macros will interpret that info.
1632  */
1633
1634 #define RI_FORMAT(a)              (a & 0x0001)
1635 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1636
1637 static int
1638 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1639 {
1640         struct mwl8k_priv *priv = hw->priv;
1641         struct mwl8k_tx_queue *txq = priv->txq + index;
1642         int processed;
1643
1644         processed = 0;
1645         while (txq->len > 0 && limit--) {
1646                 int tx;
1647                 struct mwl8k_tx_desc *tx_desc;
1648                 unsigned long addr;
1649                 int size;
1650                 struct sk_buff *skb;
1651                 struct ieee80211_tx_info *info;
1652                 u32 status;
1653                 struct ieee80211_sta *sta;
1654                 struct mwl8k_sta *sta_info = NULL;
1655                 u16 rate_info;
1656                 struct ieee80211_hdr *wh;
1657
1658                 tx = txq->head;
1659                 tx_desc = txq->txd + tx;
1660
1661                 status = le32_to_cpu(tx_desc->status);
1662
1663                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1664                         if (!force)
1665                                 break;
1666                         tx_desc->status &=
1667                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1668                 }
1669
1670                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1671                 BUG_ON(txq->len == 0);
1672                 txq->len--;
1673                 priv->pending_tx_pkts--;
1674
1675                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1676                 size = le16_to_cpu(tx_desc->pkt_len);
1677                 skb = txq->skb[tx];
1678                 txq->skb[tx] = NULL;
1679
1680                 BUG_ON(skb == NULL);
1681                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1682
1683                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1684
1685                 wh = (struct ieee80211_hdr *) skb->data;
1686
1687                 /* Mark descriptor as unused */
1688                 tx_desc->pkt_phys_addr = 0;
1689                 tx_desc->pkt_len = 0;
1690
1691                 info = IEEE80211_SKB_CB(skb);
1692                 if (ieee80211_is_data(wh->frame_control)) {
1693                         rcu_read_lock();
1694                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1695                                                            wh->addr2);
1696                         if (sta) {
1697                                 sta_info = MWL8K_STA(sta);
1698                                 BUG_ON(sta_info == NULL);
1699                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1700                                 /* If rate is < 6.5 Mpbs for an ht station
1701                                  * do not form an ampdu. If the station is a
1702                                  * legacy station (format = 0), do not form an
1703                                  * ampdu
1704                                  */
1705                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1706                                     RI_FORMAT(rate_info) == 0) {
1707                                         sta_info->is_ampdu_allowed = false;
1708                                 } else {
1709                                         sta_info->is_ampdu_allowed = true;
1710                                 }
1711                         }
1712                         rcu_read_unlock();
1713                 }
1714
1715                 ieee80211_tx_info_clear_status(info);
1716
1717                 /* Rate control is happening in the firmware.
1718                  * Ensure no tx rate is being reported.
1719                  */
1720                 info->status.rates[0].idx = -1;
1721                 info->status.rates[0].count = 1;
1722
1723                 if (MWL8K_TXD_SUCCESS(status))
1724                         info->flags |= IEEE80211_TX_STAT_ACK;
1725
1726                 ieee80211_tx_status_irqsafe(hw, skb);
1727
1728                 processed++;
1729         }
1730
1731         return processed;
1732 }
1733
1734 /* must be called only when the card's transmit is completely halted */
1735 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1736 {
1737         struct mwl8k_priv *priv = hw->priv;
1738         struct mwl8k_tx_queue *txq = priv->txq + index;
1739
1740         if (txq->txd == NULL)
1741                 return;
1742
1743         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1744
1745         kfree(txq->skb);
1746         txq->skb = NULL;
1747
1748         pci_free_consistent(priv->pdev,
1749                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1750                             txq->txd, txq->txd_dma);
1751         txq->txd = NULL;
1752 }
1753
1754 /* caller must hold priv->stream_lock when calling the stream functions */
1755 static struct mwl8k_ampdu_stream *
1756 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1757 {
1758         struct mwl8k_ampdu_stream *stream;
1759         struct mwl8k_priv *priv = hw->priv;
1760         int i;
1761
1762         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1763                 stream = &priv->ampdu[i];
1764                 if (stream->state == AMPDU_NO_STREAM) {
1765                         stream->sta = sta;
1766                         stream->state = AMPDU_STREAM_NEW;
1767                         stream->tid = tid;
1768                         stream->idx = i;
1769                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1770                                     sta->addr, tid);
1771                         return stream;
1772                 }
1773         }
1774         return NULL;
1775 }
1776
1777 static int
1778 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1779 {
1780         int ret;
1781
1782         /* if the stream has already been started, don't start it again */
1783         if (stream->state != AMPDU_STREAM_NEW)
1784                 return 0;
1785         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1786         if (ret)
1787                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1788                             "%d\n", stream->sta->addr, stream->tid, ret);
1789         else
1790                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1791                             stream->sta->addr, stream->tid);
1792         return ret;
1793 }
1794
1795 static void
1796 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1797 {
1798         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1799                     stream->tid);
1800         memset(stream, 0, sizeof(*stream));
1801 }
1802
1803 static struct mwl8k_ampdu_stream *
1804 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1805 {
1806         struct mwl8k_priv *priv = hw->priv;
1807         int i;
1808
1809         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1810                 struct mwl8k_ampdu_stream *stream;
1811                 stream = &priv->ampdu[i];
1812                 if (stream->state == AMPDU_NO_STREAM)
1813                         continue;
1814                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1815                     stream->tid == tid)
1816                         return stream;
1817         }
1818         return NULL;
1819 }
1820
1821 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1822 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1823 {
1824         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1825         struct tx_traffic_info *tx_stats;
1826
1827         BUG_ON(tid >= MWL8K_MAX_TID);
1828         tx_stats = &sta_info->tx_stats[tid];
1829
1830         return sta_info->is_ampdu_allowed &&
1831                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1832 }
1833
1834 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1835 {
1836         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1837         struct tx_traffic_info *tx_stats;
1838
1839         BUG_ON(tid >= MWL8K_MAX_TID);
1840         tx_stats = &sta_info->tx_stats[tid];
1841
1842         if (tx_stats->start_time == 0)
1843                 tx_stats->start_time = jiffies;
1844
1845         /* reset the packet count after each second elapses.  If the number of
1846          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1847          * an ampdu stream to be started.
1848          */
1849         if (jiffies - tx_stats->start_time > HZ) {
1850                 tx_stats->pkts = 0;
1851                 tx_stats->start_time = 0;
1852         } else
1853                 tx_stats->pkts++;
1854 }
1855
1856 /* The hardware ampdu queues start from 5.
1857  * txpriorities for ampdu queues are
1858  * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1859  * and queue 3 is lowest (queue 4 is reserved)
1860  */
1861 #define BA_QUEUE                5
1862
1863 static void
1864 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1865                int index,
1866                struct ieee80211_sta *sta,
1867                struct sk_buff *skb)
1868 {
1869         struct mwl8k_priv *priv = hw->priv;
1870         struct ieee80211_tx_info *tx_info;
1871         struct mwl8k_vif *mwl8k_vif;
1872         struct ieee80211_hdr *wh;
1873         struct mwl8k_tx_queue *txq;
1874         struct mwl8k_tx_desc *tx;
1875         dma_addr_t dma;
1876         u32 txstatus;
1877         u8 txdatarate;
1878         u16 qos;
1879         int txpriority;
1880         u8 tid = 0;
1881         struct mwl8k_ampdu_stream *stream = NULL;
1882         bool start_ba_session = false;
1883         bool mgmtframe = false;
1884         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1885         bool eapol_frame = false;
1886
1887         wh = (struct ieee80211_hdr *)skb->data;
1888         if (ieee80211_is_data_qos(wh->frame_control))
1889                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1890         else
1891                 qos = 0;
1892
1893         if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1894                 eapol_frame = true;
1895
1896         if (ieee80211_is_mgmt(wh->frame_control))
1897                 mgmtframe = true;
1898
1899         if (priv->ap_fw)
1900                 mwl8k_encapsulate_tx_frame(priv, skb);
1901         else
1902                 mwl8k_add_dma_header(priv, skb, 0, 0);
1903
1904         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1905
1906         tx_info = IEEE80211_SKB_CB(skb);
1907         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1908
1909         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1910                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1911                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1912                 mwl8k_vif->seqno += 0x10;
1913         }
1914
1915         /* Setup firmware control bit fields for each frame type.  */
1916         txstatus = 0;
1917         txdatarate = 0;
1918         if (ieee80211_is_mgmt(wh->frame_control) ||
1919             ieee80211_is_ctl(wh->frame_control)) {
1920                 txdatarate = 0;
1921                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1922         } else if (ieee80211_is_data(wh->frame_control)) {
1923                 txdatarate = 1;
1924                 if (is_multicast_ether_addr(wh->addr1))
1925                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1926
1927                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1928                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1929                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1930                 else
1931                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1932         }
1933
1934         /* Queue ADDBA request in the respective data queue.  While setting up
1935          * the ampdu stream, mac80211 queues further packets for that
1936          * particular ra/tid pair.  However, packets piled up in the hardware
1937          * for that ra/tid pair will still go out. ADDBA request and the
1938          * related data packets going out from different queues asynchronously
1939          * will cause a shift in the receiver window which might result in
1940          * ampdu packets getting dropped at the receiver after the stream has
1941          * been setup.
1942          */
1943         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1944             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1945             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1946             priv->ap_fw)) {
1947                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1948                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1949                 index = mwl8k_tid_queue_mapping(tid);
1950         }
1951
1952         txpriority = index;
1953
1954         if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1955             ieee80211_is_data_qos(wh->frame_control)) {
1956                 tid = qos & 0xf;
1957                 mwl8k_tx_count_packet(sta, tid);
1958                 spin_lock(&priv->stream_lock);
1959                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1960                 if (stream != NULL) {
1961                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1962                                 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1963                                 txpriority = (BA_QUEUE + stream->idx) %
1964                                              TOTAL_HW_TX_QUEUES;
1965                                 if (stream->idx <= 1)
1966                                         index = stream->idx +
1967                                                 MWL8K_TX_WMM_QUEUES;
1968
1969                         } else if (stream->state == AMPDU_STREAM_NEW) {
1970                                 /* We get here if the driver sends us packets
1971                                  * after we've initiated a stream, but before
1972                                  * our ampdu_action routine has been called
1973                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1974                                  * for the ADDBA request.  So this packet can
1975                                  * go out with no risk of sequence number
1976                                  * mismatch.  No special handling is required.
1977                                  */
1978                         } else {
1979                                 /* Drop packets that would go out after the
1980                                  * ADDBA request was sent but before the ADDBA
1981                                  * response is received.  If we don't do this,
1982                                  * the recipient would probably receive it
1983                                  * after the ADDBA request with SSN 0.  This
1984                                  * will cause the recipient's BA receive window
1985                                  * to shift, which would cause the subsequent
1986                                  * packets in the BA stream to be discarded.
1987                                  * mac80211 queues our packets for us in this
1988                                  * case, so this is really just a safety check.
1989                                  */
1990                                 wiphy_warn(hw->wiphy,
1991                                            "Cannot send packet while ADDBA "
1992                                            "dialog is underway.\n");
1993                                 spin_unlock(&priv->stream_lock);
1994                                 dev_kfree_skb(skb);
1995                                 return;
1996                         }
1997                 } else {
1998                         /* Defer calling mwl8k_start_stream so that the current
1999                          * skb can go out before the ADDBA request.  This
2000                          * prevents sequence number mismatch at the recepient
2001                          * as described above.
2002                          */
2003                         if (mwl8k_ampdu_allowed(sta, tid)) {
2004                                 stream = mwl8k_add_stream(hw, sta, tid);
2005                                 if (stream != NULL)
2006                                         start_ba_session = true;
2007                         }
2008                 }
2009                 spin_unlock(&priv->stream_lock);
2010         } else {
2011                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2012                 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2013         }
2014
2015         dma = pci_map_single(priv->pdev, skb->data,
2016                                 skb->len, PCI_DMA_TODEVICE);
2017
2018         if (pci_dma_mapping_error(priv->pdev, dma)) {
2019                 wiphy_debug(hw->wiphy,
2020                             "failed to dma map skb, dropping TX frame.\n");
2021                 if (start_ba_session) {
2022                         spin_lock(&priv->stream_lock);
2023                         mwl8k_remove_stream(hw, stream);
2024                         spin_unlock(&priv->stream_lock);
2025                 }
2026                 dev_kfree_skb(skb);
2027                 return;
2028         }
2029
2030         spin_lock_bh(&priv->tx_lock);
2031
2032         txq = priv->txq + index;
2033
2034         /* Mgmt frames that go out frequently are probe
2035          * responses. Other mgmt frames got out relatively
2036          * infrequently. Hence reserve 2 buffers so that
2037          * other mgmt frames do not get dropped due to an
2038          * already queued probe response in one of the
2039          * reserved buffers.
2040          */
2041
2042         if (txq->len >= MWL8K_TX_DESCS - 2) {
2043                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2044                         if (start_ba_session) {
2045                                 spin_lock(&priv->stream_lock);
2046                                 mwl8k_remove_stream(hw, stream);
2047                                 spin_unlock(&priv->stream_lock);
2048                         }
2049                         spin_unlock_bh(&priv->tx_lock);
2050                         pci_unmap_single(priv->pdev, dma, skb->len,
2051                                          PCI_DMA_TODEVICE);
2052                         dev_kfree_skb(skb);
2053                         return;
2054                 }
2055         }
2056
2057         BUG_ON(txq->skb[txq->tail] != NULL);
2058         txq->skb[txq->tail] = skb;
2059
2060         tx = txq->txd + txq->tail;
2061         tx->data_rate = txdatarate;
2062         tx->tx_priority = txpriority;
2063         tx->qos_control = cpu_to_le16(qos);
2064         tx->pkt_phys_addr = cpu_to_le32(dma);
2065         tx->pkt_len = cpu_to_le16(skb->len);
2066         tx->rate_info = 0;
2067         if (!priv->ap_fw && sta != NULL)
2068                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2069         else
2070                 tx->peer_id = 0;
2071
2072         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2073                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2074                                                 MWL8K_HW_TIMER_REGISTER));
2075         else
2076                 tx->timestamp = 0;
2077
2078         wmb();
2079         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2080
2081         txq->len++;
2082         priv->pending_tx_pkts++;
2083
2084         txq->tail++;
2085         if (txq->tail == MWL8K_TX_DESCS)
2086                 txq->tail = 0;
2087
2088         mwl8k_tx_start(priv);
2089
2090         spin_unlock_bh(&priv->tx_lock);
2091
2092         /* Initiate the ampdu session here */
2093         if (start_ba_session) {
2094                 spin_lock(&priv->stream_lock);
2095                 if (mwl8k_start_stream(hw, stream))
2096                         mwl8k_remove_stream(hw, stream);
2097                 spin_unlock(&priv->stream_lock);
2098         }
2099 }
2100
2101
2102 /*
2103  * Firmware access.
2104  *
2105  * We have the following requirements for issuing firmware commands:
2106  * - Some commands require that the packet transmit path is idle when
2107  *   the command is issued.  (For simplicity, we'll just quiesce the
2108  *   transmit path for every command.)
2109  * - There are certain sequences of commands that need to be issued to
2110  *   the hardware sequentially, with no other intervening commands.
2111  *
2112  * This leads to an implementation of a "firmware lock" as a mutex that
2113  * can be taken recursively, and which is taken by both the low-level
2114  * command submission function (mwl8k_post_cmd) as well as any users of
2115  * that function that require issuing of an atomic sequence of commands,
2116  * and quiesces the transmit path whenever it's taken.
2117  */
2118 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2119 {
2120         struct mwl8k_priv *priv = hw->priv;
2121
2122         if (priv->fw_mutex_owner != current) {
2123                 int rc;
2124
2125                 mutex_lock(&priv->fw_mutex);
2126                 ieee80211_stop_queues(hw);
2127
2128                 rc = mwl8k_tx_wait_empty(hw);
2129                 if (rc) {
2130                         if (!priv->hw_restart_in_progress)
2131                                 ieee80211_wake_queues(hw);
2132
2133                         mutex_unlock(&priv->fw_mutex);
2134
2135                         return rc;
2136                 }
2137
2138                 priv->fw_mutex_owner = current;
2139         }
2140
2141         priv->fw_mutex_depth++;
2142
2143         return 0;
2144 }
2145
2146 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2147 {
2148         struct mwl8k_priv *priv = hw->priv;
2149
2150         if (!--priv->fw_mutex_depth) {
2151                 if (!priv->hw_restart_in_progress)
2152                         ieee80211_wake_queues(hw);
2153
2154                 priv->fw_mutex_owner = NULL;
2155                 mutex_unlock(&priv->fw_mutex);
2156         }
2157 }
2158
2159
2160 /*
2161  * Command processing.
2162  */
2163
2164 /* Timeout firmware commands after 10s */
2165 #define MWL8K_CMD_TIMEOUT_MS    10000
2166
2167 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2168 {
2169         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2170         struct mwl8k_priv *priv = hw->priv;
2171         void __iomem *regs = priv->regs;
2172         dma_addr_t dma_addr;
2173         unsigned int dma_size;
2174         int rc;
2175         unsigned long timeout = 0;
2176         u8 buf[32];
2177
2178         cmd->result = (__force __le16) 0xffff;
2179         dma_size = le16_to_cpu(cmd->length);
2180         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2181                                   PCI_DMA_BIDIRECTIONAL);
2182         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2183                 return -ENOMEM;
2184
2185         rc = mwl8k_fw_lock(hw);
2186         if (rc) {
2187                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2188                                                 PCI_DMA_BIDIRECTIONAL);
2189                 return rc;
2190         }
2191
2192         priv->hostcmd_wait = &cmd_wait;
2193         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2194         iowrite32(MWL8K_H2A_INT_DOORBELL,
2195                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2196         iowrite32(MWL8K_H2A_INT_DUMMY,
2197                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2198
2199         timeout = wait_for_completion_timeout(&cmd_wait,
2200                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2201
2202         priv->hostcmd_wait = NULL;
2203
2204         mwl8k_fw_unlock(hw);
2205
2206         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2207                                         PCI_DMA_BIDIRECTIONAL);
2208
2209         if (!timeout) {
2210                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2211                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2212                           MWL8K_CMD_TIMEOUT_MS);
2213                 rc = -ETIMEDOUT;
2214         } else {
2215                 int ms;
2216
2217                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2218
2219                 rc = cmd->result ? -EINVAL : 0;
2220                 if (rc)
2221                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2222                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2223                                   le16_to_cpu(cmd->result));
2224                 else if (ms > 2000)
2225                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2226                                      mwl8k_cmd_name(cmd->code,
2227                                                     buf, sizeof(buf)),
2228                                      ms);
2229         }
2230
2231         return rc;
2232 }
2233
2234 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2235                                  struct ieee80211_vif *vif,
2236                                  struct mwl8k_cmd_pkt *cmd)
2237 {
2238         if (vif != NULL)
2239                 cmd->macid = MWL8K_VIF(vif)->macid;
2240         return mwl8k_post_cmd(hw, cmd);
2241 }
2242
2243 /*
2244  * Setup code shared between STA and AP firmware images.
2245  */
2246 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2247 {
2248         struct mwl8k_priv *priv = hw->priv;
2249
2250         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2251         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2252
2253         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2254         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2255
2256         priv->band_24.band = IEEE80211_BAND_2GHZ;
2257         priv->band_24.channels = priv->channels_24;
2258         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2259         priv->band_24.bitrates = priv->rates_24;
2260         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2261
2262         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2263 }
2264
2265 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2266 {
2267         struct mwl8k_priv *priv = hw->priv;
2268
2269         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2270         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2271
2272         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2273         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2274
2275         priv->band_50.band = IEEE80211_BAND_5GHZ;
2276         priv->band_50.channels = priv->channels_50;
2277         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2278         priv->band_50.bitrates = priv->rates_50;
2279         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2280
2281         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2282 }
2283
2284 /*
2285  * CMD_GET_HW_SPEC (STA version).
2286  */
2287 struct mwl8k_cmd_get_hw_spec_sta {
2288         struct mwl8k_cmd_pkt header;
2289         __u8 hw_rev;
2290         __u8 host_interface;
2291         __le16 num_mcaddrs;
2292         __u8 perm_addr[ETH_ALEN];
2293         __le16 region_code;
2294         __le32 fw_rev;
2295         __le32 ps_cookie;
2296         __le32 caps;
2297         __u8 mcs_bitmap[16];
2298         __le32 rx_queue_ptr;
2299         __le32 num_tx_queues;
2300         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2301         __le32 caps2;
2302         __le32 num_tx_desc_per_queue;
2303         __le32 total_rxd;
2304 } __packed;
2305
2306 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2307 #define MWL8K_CAP_GREENFIELD            0x08000000
2308 #define MWL8K_CAP_AMPDU                 0x04000000
2309 #define MWL8K_CAP_RX_STBC               0x01000000
2310 #define MWL8K_CAP_TX_STBC               0x00800000
2311 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2312 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2313 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2314 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2315 #define MWL8K_CAP_DELAY_BA              0x00003000
2316 #define MWL8K_CAP_MIMO                  0x00000200
2317 #define MWL8K_CAP_40MHZ                 0x00000100
2318 #define MWL8K_CAP_BAND_MASK             0x00000007
2319 #define MWL8K_CAP_5GHZ                  0x00000004
2320 #define MWL8K_CAP_2GHZ4                 0x00000001
2321
2322 static void
2323 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2324                   struct ieee80211_supported_band *band, u32 cap)
2325 {
2326         int rx_streams;
2327         int tx_streams;
2328
2329         band->ht_cap.ht_supported = 1;
2330
2331         if (cap & MWL8K_CAP_MAX_AMSDU)
2332                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2333         if (cap & MWL8K_CAP_GREENFIELD)
2334                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2335         if (cap & MWL8K_CAP_AMPDU) {
2336                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2337                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2338                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2339         }
2340         if (cap & MWL8K_CAP_RX_STBC)
2341                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2342         if (cap & MWL8K_CAP_TX_STBC)
2343                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2344         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2345                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2346         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2347                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2348         if (cap & MWL8K_CAP_DELAY_BA)
2349                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2350         if (cap & MWL8K_CAP_40MHZ)
2351                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2352
2353         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2354         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2355
2356         band->ht_cap.mcs.rx_mask[0] = 0xff;
2357         if (rx_streams >= 2)
2358                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2359         if (rx_streams >= 3)
2360                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2361         band->ht_cap.mcs.rx_mask[4] = 0x01;
2362         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2363
2364         if (rx_streams != tx_streams) {
2365                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2366                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2367                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2368         }
2369 }
2370
2371 static void
2372 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2373 {
2374         struct mwl8k_priv *priv = hw->priv;
2375
2376         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2377                 mwl8k_setup_2ghz_band(hw);
2378                 if (caps & MWL8K_CAP_MIMO)
2379                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2380         }
2381
2382         if (caps & MWL8K_CAP_5GHZ) {
2383                 mwl8k_setup_5ghz_band(hw);
2384                 if (caps & MWL8K_CAP_MIMO)
2385                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2386         }
2387 }
2388
2389 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2390 {
2391         struct mwl8k_priv *priv = hw->priv;
2392         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2393         int rc;
2394         int i;
2395
2396         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2397         if (cmd == NULL)
2398                 return -ENOMEM;
2399
2400         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2401         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2402
2403         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2404         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2405         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2406         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2407         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2408                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2409         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2410         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2411
2412         rc = mwl8k_post_cmd(hw, &cmd->header);
2413
2414         if (!rc) {
2415                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2416                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2417                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2418                 priv->hw_rev = cmd->hw_rev;
2419                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2420                 priv->ap_macids_supported = 0x00000000;
2421                 priv->sta_macids_supported = 0x00000001;
2422         }
2423
2424         kfree(cmd);
2425         return rc;
2426 }
2427
2428 /*
2429  * CMD_GET_HW_SPEC (AP version).
2430  */
2431 struct mwl8k_cmd_get_hw_spec_ap {
2432         struct mwl8k_cmd_pkt header;
2433         __u8 hw_rev;
2434         __u8 host_interface;
2435         __le16 num_wcb;
2436         __le16 num_mcaddrs;
2437         __u8 perm_addr[ETH_ALEN];
2438         __le16 region_code;
2439         __le16 num_antenna;
2440         __le32 fw_rev;
2441         __le32 wcbbase0;
2442         __le32 rxwrptr;
2443         __le32 rxrdptr;
2444         __le32 ps_cookie;
2445         __le32 wcbbase1;
2446         __le32 wcbbase2;
2447         __le32 wcbbase3;
2448         __le32 fw_api_version;
2449         __le32 caps;
2450         __le32 num_of_ampdu_queues;
2451         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2452 } __packed;
2453
2454 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2455 {
2456         struct mwl8k_priv *priv = hw->priv;
2457         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2458         int rc, i;
2459         u32 api_version;
2460
2461         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2462         if (cmd == NULL)
2463                 return -ENOMEM;
2464
2465         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2466         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2467
2468         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2469         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2470
2471         rc = mwl8k_post_cmd(hw, &cmd->header);
2472
2473         if (!rc) {
2474                 int off;
2475
2476                 api_version = le32_to_cpu(cmd->fw_api_version);
2477                 if (priv->device_info->fw_api_ap != api_version) {
2478                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2479                                "  Expected %d got %d.\n", MWL8K_NAME,
2480                                priv->device_info->part_name,
2481                                priv->device_info->fw_api_ap,
2482                                api_version);
2483                         rc = -EINVAL;
2484                         goto done;
2485                 }
2486                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2487                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2488                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2489                 priv->hw_rev = cmd->hw_rev;
2490                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2491                 priv->ap_macids_supported = 0x000000ff;
2492                 priv->sta_macids_supported = 0x00000000;
2493                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2494                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2495                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2496                                    " but we only support %d.\n",
2497                                    priv->num_ampdu_queues,
2498                                    MWL8K_MAX_AMPDU_QUEUES);
2499                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2500                 }
2501                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2502                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2503
2504                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2505                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2506
2507                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2508                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2509                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2510                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2511
2512                 for (i = 0; i < priv->num_ampdu_queues; i++)
2513                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2514                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2515         }
2516
2517 done:
2518         kfree(cmd);
2519         return rc;
2520 }
2521
2522 /*
2523  * CMD_SET_HW_SPEC.
2524  */
2525 struct mwl8k_cmd_set_hw_spec {
2526         struct mwl8k_cmd_pkt header;
2527         __u8 hw_rev;
2528         __u8 host_interface;
2529         __le16 num_mcaddrs;
2530         __u8 perm_addr[ETH_ALEN];
2531         __le16 region_code;
2532         __le32 fw_rev;
2533         __le32 ps_cookie;
2534         __le32 caps;
2535         __le32 rx_queue_ptr;
2536         __le32 num_tx_queues;
2537         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2538         __le32 flags;
2539         __le32 num_tx_desc_per_queue;
2540         __le32 total_rxd;
2541 } __packed;
2542
2543 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2544  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2545  * the packets that are queued for more than 500ms, will be dropped in the
2546  * hardware. This helps minimizing the issues caused due to head-of-line
2547  * blocking where a slow client can hog the bandwidth and affect traffic to a
2548  * faster client.
2549  */
2550 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2551 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2552 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2553 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2554 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2555
2556 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2557 {
2558         struct mwl8k_priv *priv = hw->priv;
2559         struct mwl8k_cmd_set_hw_spec *cmd;
2560         int rc;
2561         int i;
2562
2563         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2564         if (cmd == NULL)
2565                 return -ENOMEM;
2566
2567         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2568         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2569
2570         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2571         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2572         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2573
2574         /*
2575          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2576          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2577          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2578          * priority is interpreted the right way in firmware.
2579          */
2580         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2581                 int j = mwl8k_tx_queues(priv) - 1 - i;
2582                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2583         }
2584
2585         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2586                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2587                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2588                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2589                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2590         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2591         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2592
2593         rc = mwl8k_post_cmd(hw, &cmd->header);
2594         kfree(cmd);
2595
2596         return rc;
2597 }
2598
2599 /*
2600  * CMD_MAC_MULTICAST_ADR.
2601  */
2602 struct mwl8k_cmd_mac_multicast_adr {
2603         struct mwl8k_cmd_pkt header;
2604         __le16 action;
2605         __le16 numaddr;
2606         __u8 addr[0][ETH_ALEN];
2607 };
2608
2609 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2610 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2611 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2612 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2613
2614 static struct mwl8k_cmd_pkt *
2615 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2616                               struct netdev_hw_addr_list *mc_list)
2617 {
2618         struct mwl8k_priv *priv = hw->priv;
2619         struct mwl8k_cmd_mac_multicast_adr *cmd;
2620         int size;
2621         int mc_count = 0;
2622
2623         if (mc_list)
2624                 mc_count = netdev_hw_addr_list_count(mc_list);
2625
2626         if (allmulti || mc_count > priv->num_mcaddrs) {
2627                 allmulti = 1;
2628                 mc_count = 0;
2629         }
2630
2631         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2632
2633         cmd = kzalloc(size, GFP_ATOMIC);
2634         if (cmd == NULL)
2635                 return NULL;
2636
2637         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2638         cmd->header.length = cpu_to_le16(size);
2639         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2640                                   MWL8K_ENABLE_RX_BROADCAST);
2641
2642         if (allmulti) {
2643                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2644         } else if (mc_count) {
2645                 struct netdev_hw_addr *ha;
2646                 int i = 0;
2647
2648                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2649                 cmd->numaddr = cpu_to_le16(mc_count);
2650                 netdev_hw_addr_list_for_each(ha, mc_list) {
2651                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2652                 }
2653         }
2654
2655         return &cmd->header;
2656 }
2657
2658 /*
2659  * CMD_GET_STAT.
2660  */
2661 struct mwl8k_cmd_get_stat {
2662         struct mwl8k_cmd_pkt header;
2663         __le32 stats[64];
2664 } __packed;
2665
2666 #define MWL8K_STAT_ACK_FAILURE  9
2667 #define MWL8K_STAT_RTS_FAILURE  12
2668 #define MWL8K_STAT_FCS_ERROR    24
2669 #define MWL8K_STAT_RTS_SUCCESS  11
2670
2671 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2672                               struct ieee80211_low_level_stats *stats)
2673 {
2674         struct mwl8k_cmd_get_stat *cmd;
2675         int rc;
2676
2677         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2678         if (cmd == NULL)
2679                 return -ENOMEM;
2680
2681         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2682         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2683
2684         rc = mwl8k_post_cmd(hw, &cmd->header);
2685         if (!rc) {
2686                 stats->dot11ACKFailureCount =
2687                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2688                 stats->dot11RTSFailureCount =
2689                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2690                 stats->dot11FCSErrorCount =
2691                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2692                 stats->dot11RTSSuccessCount =
2693                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2694         }
2695         kfree(cmd);
2696
2697         return rc;
2698 }
2699
2700 /*
2701  * CMD_RADIO_CONTROL.
2702  */
2703 struct mwl8k_cmd_radio_control {
2704         struct mwl8k_cmd_pkt header;
2705         __le16 action;
2706         __le16 control;
2707         __le16 radio_on;
2708 } __packed;
2709
2710 static int
2711 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2712 {
2713         struct mwl8k_priv *priv = hw->priv;
2714         struct mwl8k_cmd_radio_control *cmd;
2715         int rc;
2716
2717         if (enable == priv->radio_on && !force)
2718                 return 0;
2719
2720         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2721         if (cmd == NULL)
2722                 return -ENOMEM;
2723
2724         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2725         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2726         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2727         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2728         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2729
2730         rc = mwl8k_post_cmd(hw, &cmd->header);
2731         kfree(cmd);
2732
2733         if (!rc)
2734                 priv->radio_on = enable;
2735
2736         return rc;
2737 }
2738
2739 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2740 {
2741         return mwl8k_cmd_radio_control(hw, 0, 0);
2742 }
2743
2744 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2745 {
2746         return mwl8k_cmd_radio_control(hw, 1, 0);
2747 }
2748
2749 static int
2750 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2751 {
2752         struct mwl8k_priv *priv = hw->priv;
2753
2754         priv->radio_short_preamble = short_preamble;
2755
2756         return mwl8k_cmd_radio_control(hw, 1, 1);
2757 }
2758
2759 /*
2760  * CMD_RF_TX_POWER.
2761  */
2762 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2763
2764 struct mwl8k_cmd_rf_tx_power {
2765         struct mwl8k_cmd_pkt header;
2766         __le16 action;
2767         __le16 support_level;
2768         __le16 current_level;
2769         __le16 reserved;
2770         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2771 } __packed;
2772
2773 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2774 {
2775         struct mwl8k_cmd_rf_tx_power *cmd;
2776         int rc;
2777
2778         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2779         if (cmd == NULL)
2780                 return -ENOMEM;
2781
2782         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2783         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2784         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2785         cmd->support_level = cpu_to_le16(dBm);
2786
2787         rc = mwl8k_post_cmd(hw, &cmd->header);
2788         kfree(cmd);
2789
2790         return rc;
2791 }
2792
2793 /*
2794  * CMD_TX_POWER.
2795  */
2796 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2797
2798 struct mwl8k_cmd_tx_power {
2799         struct mwl8k_cmd_pkt header;
2800         __le16 action;
2801         __le16 band;
2802         __le16 channel;
2803         __le16 bw;
2804         __le16 sub_ch;
2805         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2806 } __packed;
2807
2808 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2809                                      struct ieee80211_conf *conf,
2810                                      unsigned short pwr)
2811 {
2812         struct ieee80211_channel *channel = conf->channel;
2813         struct mwl8k_cmd_tx_power *cmd;
2814         int rc;
2815         int i;
2816
2817         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2818         if (cmd == NULL)
2819                 return -ENOMEM;
2820
2821         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2822         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2823         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2824
2825         if (channel->band == IEEE80211_BAND_2GHZ)
2826                 cmd->band = cpu_to_le16(0x1);
2827         else if (channel->band == IEEE80211_BAND_5GHZ)
2828                 cmd->band = cpu_to_le16(0x4);
2829
2830         cmd->channel = cpu_to_le16(channel->hw_value);
2831
2832         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2833             conf->channel_type == NL80211_CHAN_HT20) {
2834                 cmd->bw = cpu_to_le16(0x2);
2835         } else {
2836                 cmd->bw = cpu_to_le16(0x4);
2837                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2838                         cmd->sub_ch = cpu_to_le16(0x3);
2839                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2840                         cmd->sub_ch = cpu_to_le16(0x1);
2841         }
2842
2843         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2844                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2845
2846         rc = mwl8k_post_cmd(hw, &cmd->header);
2847         kfree(cmd);
2848
2849         return rc;
2850 }
2851
2852 /*
2853  * CMD_RF_ANTENNA.
2854  */
2855 struct mwl8k_cmd_rf_antenna {
2856         struct mwl8k_cmd_pkt header;
2857         __le16 antenna;
2858         __le16 mode;
2859 } __packed;
2860
2861 #define MWL8K_RF_ANTENNA_RX             1
2862 #define MWL8K_RF_ANTENNA_TX             2
2863
2864 static int
2865 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2866 {
2867         struct mwl8k_cmd_rf_antenna *cmd;
2868         int rc;
2869
2870         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2871         if (cmd == NULL)
2872                 return -ENOMEM;
2873
2874         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2875         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2876         cmd->antenna = cpu_to_le16(antenna);
2877         cmd->mode = cpu_to_le16(mask);
2878
2879         rc = mwl8k_post_cmd(hw, &cmd->header);
2880         kfree(cmd);
2881
2882         return rc;
2883 }
2884
2885 /*
2886  * CMD_SET_BEACON.
2887  */
2888 struct mwl8k_cmd_set_beacon {
2889         struct mwl8k_cmd_pkt header;
2890         __le16 beacon_len;
2891         __u8 beacon[0];
2892 };
2893
2894 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2895                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2896 {
2897         struct mwl8k_cmd_set_beacon *cmd;
2898         int rc;
2899
2900         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2901         if (cmd == NULL)
2902                 return -ENOMEM;
2903
2904         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2905         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2906         cmd->beacon_len = cpu_to_le16(len);
2907         memcpy(cmd->beacon, beacon, len);
2908
2909         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2910         kfree(cmd);
2911
2912         return rc;
2913 }
2914
2915 /*
2916  * CMD_SET_PRE_SCAN.
2917  */
2918 struct mwl8k_cmd_set_pre_scan {
2919         struct mwl8k_cmd_pkt header;
2920 } __packed;
2921
2922 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2923 {
2924         struct mwl8k_cmd_set_pre_scan *cmd;
2925         int rc;
2926
2927         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2928         if (cmd == NULL)
2929                 return -ENOMEM;
2930
2931         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2932         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2933
2934         rc = mwl8k_post_cmd(hw, &cmd->header);
2935         kfree(cmd);
2936
2937         return rc;
2938 }
2939
2940 /*
2941  * CMD_SET_POST_SCAN.
2942  */
2943 struct mwl8k_cmd_set_post_scan {
2944         struct mwl8k_cmd_pkt header;
2945         __le32 isibss;
2946         __u8 bssid[ETH_ALEN];
2947 } __packed;
2948
2949 static int
2950 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2951 {
2952         struct mwl8k_cmd_set_post_scan *cmd;
2953         int rc;
2954
2955         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2956         if (cmd == NULL)
2957                 return -ENOMEM;
2958
2959         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2960         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2961         cmd->isibss = 0;
2962         memcpy(cmd->bssid, mac, ETH_ALEN);
2963
2964         rc = mwl8k_post_cmd(hw, &cmd->header);
2965         kfree(cmd);
2966
2967         return rc;
2968 }
2969
2970 /*
2971  * CMD_SET_RF_CHANNEL.
2972  */
2973 struct mwl8k_cmd_set_rf_channel {
2974         struct mwl8k_cmd_pkt header;
2975         __le16 action;
2976         __u8 current_channel;
2977         __le32 channel_flags;
2978 } __packed;
2979
2980 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2981                                     struct ieee80211_conf *conf)
2982 {
2983         struct ieee80211_channel *channel = conf->channel;
2984         struct mwl8k_cmd_set_rf_channel *cmd;
2985         int rc;
2986
2987         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2988         if (cmd == NULL)
2989                 return -ENOMEM;
2990
2991         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2992         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2993         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2994         cmd->current_channel = channel->hw_value;
2995
2996         if (channel->band == IEEE80211_BAND_2GHZ)
2997                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2998         else if (channel->band == IEEE80211_BAND_5GHZ)
2999                 cmd->channel_flags |= cpu_to_le32(0x00000004);
3000
3001         if (conf->channel_type == NL80211_CHAN_NO_HT ||
3002             conf->channel_type == NL80211_CHAN_HT20)
3003                 cmd->channel_flags |= cpu_to_le32(0x00000080);
3004         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
3005                 cmd->channel_flags |= cpu_to_le32(0x000001900);
3006         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
3007                 cmd->channel_flags |= cpu_to_le32(0x000000900);
3008
3009         rc = mwl8k_post_cmd(hw, &cmd->header);
3010         kfree(cmd);
3011
3012         return rc;
3013 }
3014
3015 /*
3016  * CMD_SET_AID.
3017  */
3018 #define MWL8K_FRAME_PROT_DISABLED                       0x00
3019 #define MWL8K_FRAME_PROT_11G                            0x07
3020 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
3021 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
3022
3023 struct mwl8k_cmd_update_set_aid {
3024         struct  mwl8k_cmd_pkt header;
3025         __le16  aid;
3026
3027          /* AP's MAC address (BSSID) */
3028         __u8    bssid[ETH_ALEN];
3029         __le16  protection_mode;
3030         __u8    supp_rates[14];
3031 } __packed;
3032
3033 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3034 {
3035         int i;
3036         int j;
3037
3038         /*
3039          * Clear nonstandard rates 4 and 13.
3040          */
3041         mask &= 0x1fef;
3042
3043         for (i = 0, j = 0; i < 14; i++) {
3044                 if (mask & (1 << i))
3045                         rates[j++] = mwl8k_rates_24[i].hw_value;
3046         }
3047 }
3048
3049 static int
3050 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3051                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3052 {
3053         struct mwl8k_cmd_update_set_aid *cmd;
3054         u16 prot_mode;
3055         int rc;
3056
3057         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3058         if (cmd == NULL)
3059                 return -ENOMEM;
3060
3061         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3062         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3063         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3064         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3065
3066         if (vif->bss_conf.use_cts_prot) {
3067                 prot_mode = MWL8K_FRAME_PROT_11G;
3068         } else {
3069                 switch (vif->bss_conf.ht_operation_mode &
3070                         IEEE80211_HT_OP_MODE_PROTECTION) {
3071                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3072                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3073                         break;
3074                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3075                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3076                         break;
3077                 default:
3078                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3079                         break;
3080                 }
3081         }
3082         cmd->protection_mode = cpu_to_le16(prot_mode);
3083
3084         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3085
3086         rc = mwl8k_post_cmd(hw, &cmd->header);
3087         kfree(cmd);
3088
3089         return rc;
3090 }
3091
3092 /*
3093  * CMD_SET_RATE.
3094  */
3095 struct mwl8k_cmd_set_rate {
3096         struct  mwl8k_cmd_pkt header;
3097         __u8    legacy_rates[14];
3098
3099         /* Bitmap for supported MCS codes.  */
3100         __u8    mcs_set[16];
3101         __u8    reserved[16];
3102 } __packed;
3103
3104 static int
3105 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3106                    u32 legacy_rate_mask, u8 *mcs_rates)
3107 {
3108         struct mwl8k_cmd_set_rate *cmd;
3109         int rc;
3110
3111         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3112         if (cmd == NULL)
3113                 return -ENOMEM;
3114
3115         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3116         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3117         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3118         memcpy(cmd->mcs_set, mcs_rates, 16);
3119
3120         rc = mwl8k_post_cmd(hw, &cmd->header);
3121         kfree(cmd);
3122
3123         return rc;
3124 }
3125
3126 /*
3127  * CMD_FINALIZE_JOIN.
3128  */
3129 #define MWL8K_FJ_BEACON_MAXLEN  128
3130
3131 struct mwl8k_cmd_finalize_join {
3132         struct mwl8k_cmd_pkt header;
3133         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3134         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3135 } __packed;
3136
3137 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3138                                    int framelen, int dtim)
3139 {
3140         struct mwl8k_cmd_finalize_join *cmd;
3141         struct ieee80211_mgmt *payload = frame;
3142         int payload_len;
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_SET_FINALIZE_JOIN);
3150         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3151         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3152
3153         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3154         if (payload_len < 0)
3155                 payload_len = 0;
3156         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3157                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3158
3159         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3160
3161         rc = mwl8k_post_cmd(hw, &cmd->header);
3162         kfree(cmd);
3163
3164         return rc;
3165 }
3166
3167 /*
3168  * CMD_SET_RTS_THRESHOLD.
3169  */
3170 struct mwl8k_cmd_set_rts_threshold {
3171         struct mwl8k_cmd_pkt header;
3172         __le16 action;
3173         __le16 threshold;
3174 } __packed;
3175
3176 static int
3177 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3178 {
3179         struct mwl8k_cmd_set_rts_threshold *cmd;
3180         int rc;
3181
3182         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3183         if (cmd == NULL)
3184                 return -ENOMEM;
3185
3186         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3187         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3188         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3189         cmd->threshold = cpu_to_le16(rts_thresh);
3190
3191         rc = mwl8k_post_cmd(hw, &cmd->header);
3192         kfree(cmd);
3193
3194         return rc;
3195 }
3196
3197 /*
3198  * CMD_SET_SLOT.
3199  */
3200 struct mwl8k_cmd_set_slot {
3201         struct mwl8k_cmd_pkt header;
3202         __le16 action;
3203         __u8 short_slot;
3204 } __packed;
3205
3206 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3207 {
3208         struct mwl8k_cmd_set_slot *cmd;
3209         int rc;
3210
3211         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3212         if (cmd == NULL)
3213                 return -ENOMEM;
3214
3215         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3216         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3217         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3218         cmd->short_slot = short_slot_time;
3219
3220         rc = mwl8k_post_cmd(hw, &cmd->header);
3221         kfree(cmd);
3222
3223         return rc;
3224 }
3225
3226 /*
3227  * CMD_SET_EDCA_PARAMS.
3228  */
3229 struct mwl8k_cmd_set_edca_params {
3230         struct mwl8k_cmd_pkt header;
3231
3232         /* See MWL8K_SET_EDCA_XXX below */
3233         __le16 action;
3234
3235         /* TX opportunity in units of 32 us */
3236         __le16 txop;
3237
3238         union {
3239                 struct {
3240                         /* Log exponent of max contention period: 0...15 */
3241                         __le32 log_cw_max;
3242
3243                         /* Log exponent of min contention period: 0...15 */
3244                         __le32 log_cw_min;
3245
3246                         /* Adaptive interframe spacing in units of 32us */
3247                         __u8 aifs;
3248
3249                         /* TX queue to configure */
3250                         __u8 txq;
3251                 } ap;
3252                 struct {
3253                         /* Log exponent of max contention period: 0...15 */
3254                         __u8 log_cw_max;
3255
3256                         /* Log exponent of min contention period: 0...15 */
3257                         __u8 log_cw_min;
3258
3259                         /* Adaptive interframe spacing in units of 32us */
3260                         __u8 aifs;
3261
3262                         /* TX queue to configure */
3263                         __u8 txq;
3264                 } sta;
3265         };
3266 } __packed;
3267
3268 #define MWL8K_SET_EDCA_CW       0x01
3269 #define MWL8K_SET_EDCA_TXOP     0x02
3270 #define MWL8K_SET_EDCA_AIFS     0x04
3271
3272 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3273                                  MWL8K_SET_EDCA_TXOP | \
3274                                  MWL8K_SET_EDCA_AIFS)
3275
3276 static int
3277 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3278                           __u16 cw_min, __u16 cw_max,
3279                           __u8 aifs, __u16 txop)
3280 {
3281         struct mwl8k_priv *priv = hw->priv;
3282         struct mwl8k_cmd_set_edca_params *cmd;
3283         int rc;
3284
3285         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3286         if (cmd == NULL)
3287                 return -ENOMEM;
3288
3289         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3290         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3291         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3292         cmd->txop = cpu_to_le16(txop);
3293         if (priv->ap_fw) {
3294                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3295                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3296                 cmd->ap.aifs = aifs;
3297                 cmd->ap.txq = qnum;
3298         } else {
3299                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3300                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3301                 cmd->sta.aifs = aifs;
3302                 cmd->sta.txq = qnum;
3303         }
3304
3305         rc = mwl8k_post_cmd(hw, &cmd->header);
3306         kfree(cmd);
3307
3308         return rc;
3309 }
3310
3311 /*
3312  * CMD_SET_WMM_MODE.
3313  */
3314 struct mwl8k_cmd_set_wmm_mode {
3315         struct mwl8k_cmd_pkt header;
3316         __le16 action;
3317 } __packed;
3318
3319 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3320 {
3321         struct mwl8k_priv *priv = hw->priv;
3322         struct mwl8k_cmd_set_wmm_mode *cmd;
3323         int rc;
3324
3325         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3326         if (cmd == NULL)
3327                 return -ENOMEM;
3328
3329         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3330         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3331         cmd->action = cpu_to_le16(!!enable);
3332
3333         rc = mwl8k_post_cmd(hw, &cmd->header);
3334         kfree(cmd);
3335
3336         if (!rc)
3337                 priv->wmm_enabled = enable;
3338
3339         return rc;
3340 }
3341
3342 /*
3343  * CMD_MIMO_CONFIG.
3344  */
3345 struct mwl8k_cmd_mimo_config {
3346         struct mwl8k_cmd_pkt header;
3347         __le32 action;
3348         __u8 rx_antenna_map;
3349         __u8 tx_antenna_map;
3350 } __packed;
3351
3352 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3353 {
3354         struct mwl8k_cmd_mimo_config *cmd;
3355         int rc;
3356
3357         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3358         if (cmd == NULL)
3359                 return -ENOMEM;
3360
3361         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3362         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3363         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3364         cmd->rx_antenna_map = rx;
3365         cmd->tx_antenna_map = tx;
3366
3367         rc = mwl8k_post_cmd(hw, &cmd->header);
3368         kfree(cmd);
3369
3370         return rc;
3371 }
3372
3373 /*
3374  * CMD_USE_FIXED_RATE (STA version).
3375  */
3376 struct mwl8k_cmd_use_fixed_rate_sta {
3377         struct mwl8k_cmd_pkt header;
3378         __le32 action;
3379         __le32 allow_rate_drop;
3380         __le32 num_rates;
3381         struct {
3382                 __le32 is_ht_rate;
3383                 __le32 enable_retry;
3384                 __le32 rate;
3385                 __le32 retry_count;
3386         } rate_entry[8];
3387         __le32 rate_type;
3388         __le32 reserved1;
3389         __le32 reserved2;
3390 } __packed;
3391
3392 #define MWL8K_USE_AUTO_RATE     0x0002
3393 #define MWL8K_UCAST_RATE        0
3394
3395 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3396 {
3397         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3398         int rc;
3399
3400         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3401         if (cmd == NULL)
3402                 return -ENOMEM;
3403
3404         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3405         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3406         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3407         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3408
3409         rc = mwl8k_post_cmd(hw, &cmd->header);
3410         kfree(cmd);
3411
3412         return rc;
3413 }
3414
3415 /*
3416  * CMD_USE_FIXED_RATE (AP version).
3417  */
3418 struct mwl8k_cmd_use_fixed_rate_ap {
3419         struct mwl8k_cmd_pkt header;
3420         __le32 action;
3421         __le32 allow_rate_drop;
3422         __le32 num_rates;
3423         struct mwl8k_rate_entry_ap {
3424                 __le32 is_ht_rate;
3425                 __le32 enable_retry;
3426                 __le32 rate;
3427                 __le32 retry_count;
3428         } rate_entry[4];
3429         u8 multicast_rate;
3430         u8 multicast_rate_type;
3431         u8 management_rate;
3432 } __packed;
3433
3434 static int
3435 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3436 {
3437         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3438         int rc;
3439
3440         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3441         if (cmd == NULL)
3442                 return -ENOMEM;
3443
3444         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3445         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3446         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3447         cmd->multicast_rate = mcast;
3448         cmd->management_rate = mgmt;
3449
3450         rc = mwl8k_post_cmd(hw, &cmd->header);
3451         kfree(cmd);
3452
3453         return rc;
3454 }
3455
3456 /*
3457  * CMD_ENABLE_SNIFFER.
3458  */
3459 struct mwl8k_cmd_enable_sniffer {
3460         struct mwl8k_cmd_pkt header;
3461         __le32 action;
3462 } __packed;
3463
3464 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3465 {
3466         struct mwl8k_cmd_enable_sniffer *cmd;
3467         int rc;
3468
3469         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3470         if (cmd == NULL)
3471                 return -ENOMEM;
3472
3473         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3474         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3475         cmd->action = cpu_to_le32(!!enable);
3476
3477         rc = mwl8k_post_cmd(hw, &cmd->header);
3478         kfree(cmd);
3479
3480         return rc;
3481 }
3482
3483 struct mwl8k_cmd_update_mac_addr {
3484         struct mwl8k_cmd_pkt header;
3485         union {
3486                 struct {
3487                         __le16 mac_type;
3488                         __u8 mac_addr[ETH_ALEN];
3489                 } mbss;
3490                 __u8 mac_addr[ETH_ALEN];
3491         };
3492 } __packed;
3493
3494 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3495 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3496 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3497 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3498
3499 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3500                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3501 {
3502         struct mwl8k_priv *priv = hw->priv;
3503         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3504         struct mwl8k_cmd_update_mac_addr *cmd;
3505         int mac_type;
3506         int rc;
3507
3508         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3509         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3510                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3511                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3512                 else
3513                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3514         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3515                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3516                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3517                 else
3518                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3519         }
3520
3521         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3522         if (cmd == NULL)
3523                 return -ENOMEM;
3524
3525         if (set)
3526                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3527         else
3528                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3529
3530         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3531         if (priv->ap_fw) {
3532                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3533                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3534         } else {
3535                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3536         }
3537
3538         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3539         kfree(cmd);
3540
3541         return rc;
3542 }
3543
3544 /*
3545  * MWL8K_CMD_SET_MAC_ADDR.
3546  */
3547 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3548                                   struct ieee80211_vif *vif, u8 *mac)
3549 {
3550         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3551 }
3552
3553 /*
3554  * MWL8K_CMD_DEL_MAC_ADDR.
3555  */
3556 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3557                                   struct ieee80211_vif *vif, u8 *mac)
3558 {
3559         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3560 }
3561
3562 /*
3563  * CMD_SET_RATEADAPT_MODE.
3564  */
3565 struct mwl8k_cmd_set_rate_adapt_mode {
3566         struct mwl8k_cmd_pkt header;
3567         __le16 action;
3568         __le16 mode;
3569 } __packed;
3570
3571 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3572 {
3573         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3574         int rc;
3575
3576         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3577         if (cmd == NULL)
3578                 return -ENOMEM;
3579
3580         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3581         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3582         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3583         cmd->mode = cpu_to_le16(mode);
3584
3585         rc = mwl8k_post_cmd(hw, &cmd->header);
3586         kfree(cmd);
3587
3588         return rc;
3589 }
3590
3591 /*
3592  * CMD_GET_WATCHDOG_BITMAP.
3593  */
3594 struct mwl8k_cmd_get_watchdog_bitmap {
3595         struct mwl8k_cmd_pkt header;
3596         u8      bitmap;
3597 } __packed;
3598
3599 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3600 {
3601         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3602         int rc;
3603
3604         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3605         if (cmd == NULL)
3606                 return -ENOMEM;
3607
3608         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3609         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3610
3611         rc = mwl8k_post_cmd(hw, &cmd->header);
3612         if (!rc)
3613                 *bitmap = cmd->bitmap;
3614
3615         kfree(cmd);
3616
3617         return rc;
3618 }
3619
3620 #define MWL8K_WMM_QUEUE_NUMBER  3
3621
3622 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3623                              u8 idx);
3624
3625 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3626 {
3627         int rc;
3628         u8 bitmap = 0, stream_index;
3629         struct mwl8k_ampdu_stream *streams;
3630         struct mwl8k_priv *priv =
3631                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3632         struct ieee80211_hw *hw = priv->hw;
3633         int i;
3634         u32 status = 0;
3635
3636         mwl8k_fw_lock(hw);
3637
3638         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3639         if (rc)
3640                 goto done;
3641
3642         spin_lock(&priv->stream_lock);
3643
3644         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3645         for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3646                 if (bitmap & (1 << i)) {
3647                         stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3648                                        TOTAL_HW_TX_QUEUES;
3649                         streams = &priv->ampdu[stream_index];
3650                         if (streams->state == AMPDU_STREAM_ACTIVE) {
3651                                 ieee80211_stop_tx_ba_session(streams->sta,
3652                                                              streams->tid);
3653                                 spin_unlock(&priv->stream_lock);
3654                                 mwl8k_destroy_ba(hw, stream_index);
3655                                 spin_lock(&priv->stream_lock);
3656                         }
3657                 }
3658         }
3659
3660         spin_unlock(&priv->stream_lock);
3661 done:
3662         atomic_dec(&priv->watchdog_event_pending);
3663         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3664         iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3665                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3666         mwl8k_fw_unlock(hw);
3667         return;
3668 }
3669
3670
3671 /*
3672  * CMD_BSS_START.
3673  */
3674 struct mwl8k_cmd_bss_start {
3675         struct mwl8k_cmd_pkt header;
3676         __le32 enable;
3677 } __packed;
3678
3679 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3680                                struct ieee80211_vif *vif, int enable)
3681 {
3682         struct mwl8k_cmd_bss_start *cmd;
3683         int rc;
3684
3685         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3686         if (cmd == NULL)
3687                 return -ENOMEM;
3688
3689         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3690         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3691         cmd->enable = cpu_to_le32(enable);
3692
3693         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3694         kfree(cmd);
3695
3696         return rc;
3697 }
3698
3699 /*
3700  * CMD_BASTREAM.
3701  */
3702
3703 /*
3704  * UPSTREAM is tx direction
3705  */
3706 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3707 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3708
3709 enum ba_stream_action_type {
3710         MWL8K_BA_CREATE,
3711         MWL8K_BA_UPDATE,
3712         MWL8K_BA_DESTROY,
3713         MWL8K_BA_FLUSH,
3714         MWL8K_BA_CHECK,
3715 };
3716
3717
3718 struct mwl8k_create_ba_stream {
3719         __le32  flags;
3720         __le32  idle_thrs;
3721         __le32  bar_thrs;
3722         __le32  window_size;
3723         u8      peer_mac_addr[6];
3724         u8      dialog_token;
3725         u8      tid;
3726         u8      queue_id;
3727         u8      param_info;
3728         __le32  ba_context;
3729         u8      reset_seq_no_flag;
3730         __le16  curr_seq_no;
3731         u8      sta_src_mac_addr[6];
3732 } __packed;
3733
3734 struct mwl8k_destroy_ba_stream {
3735         __le32  flags;
3736         __le32  ba_context;
3737 } __packed;
3738
3739 struct mwl8k_cmd_bastream {
3740         struct mwl8k_cmd_pkt    header;
3741         __le32  action;
3742         union {
3743                 struct mwl8k_create_ba_stream   create_params;
3744                 struct mwl8k_destroy_ba_stream  destroy_params;
3745         };
3746 } __packed;
3747
3748 static int
3749 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3750                struct ieee80211_vif *vif)
3751 {
3752         struct mwl8k_cmd_bastream *cmd;
3753         int rc;
3754
3755         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3756         if (cmd == NULL)
3757                 return -ENOMEM;
3758
3759         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3760         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3761
3762         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3763
3764         cmd->create_params.queue_id = stream->idx;
3765         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3766                ETH_ALEN);
3767         cmd->create_params.tid = stream->tid;
3768
3769         cmd->create_params.flags =
3770                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3771                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3772
3773         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3774
3775         kfree(cmd);
3776
3777         return rc;
3778 }
3779
3780 static int
3781 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3782                 u8 buf_size, struct ieee80211_vif *vif)
3783 {
3784         struct mwl8k_cmd_bastream *cmd;
3785         int rc;
3786
3787         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3788         if (cmd == NULL)
3789                 return -ENOMEM;
3790
3791
3792         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3793         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3794
3795         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3796
3797         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3798         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3799         cmd->create_params.queue_id = stream->idx;
3800
3801         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3802         cmd->create_params.tid = stream->tid;
3803         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3804         cmd->create_params.reset_seq_no_flag = 1;
3805
3806         cmd->create_params.param_info =
3807                 (stream->sta->ht_cap.ampdu_factor &
3808                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3809                 ((stream->sta->ht_cap.ampdu_density << 2) &
3810                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3811
3812         cmd->create_params.flags =
3813                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3814                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3815
3816         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3817
3818         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3819                 stream->sta->addr, stream->tid);
3820         kfree(cmd);
3821
3822         return rc;
3823 }
3824
3825 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3826                              u8 idx)
3827 {
3828         struct mwl8k_cmd_bastream *cmd;
3829
3830         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3831         if (cmd == NULL)
3832                 return;
3833
3834         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3835         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3836         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3837
3838         cmd->destroy_params.ba_context = cpu_to_le32(idx);
3839         mwl8k_post_cmd(hw, &cmd->header);
3840
3841         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
3842
3843         kfree(cmd);
3844 }
3845
3846 /*
3847  * CMD_SET_NEW_STN.
3848  */
3849 struct mwl8k_cmd_set_new_stn {
3850         struct mwl8k_cmd_pkt header;
3851         __le16 aid;
3852         __u8 mac_addr[6];
3853         __le16 stn_id;
3854         __le16 action;
3855         __le16 rsvd;
3856         __le32 legacy_rates;
3857         __u8 ht_rates[4];
3858         __le16 cap_info;
3859         __le16 ht_capabilities_info;
3860         __u8 mac_ht_param_info;
3861         __u8 rev;
3862         __u8 control_channel;
3863         __u8 add_channel;
3864         __le16 op_mode;
3865         __le16 stbc;
3866         __u8 add_qos_info;
3867         __u8 is_qos_sta;
3868         __le32 fw_sta_ptr;
3869 } __packed;
3870
3871 #define MWL8K_STA_ACTION_ADD            0
3872 #define MWL8K_STA_ACTION_REMOVE         2
3873
3874 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3875                                      struct ieee80211_vif *vif,
3876                                      struct ieee80211_sta *sta)
3877 {
3878         struct mwl8k_cmd_set_new_stn *cmd;
3879         u32 rates;
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         cmd->aid = cpu_to_le16(sta->aid);
3889         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3890         cmd->stn_id = cpu_to_le16(sta->aid);
3891         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3892         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3893                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3894         else
3895                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3896         cmd->legacy_rates = cpu_to_le32(rates);
3897         if (sta->ht_cap.ht_supported) {
3898                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3899                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3900                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3901                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3902                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3903                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3904                         ((sta->ht_cap.ampdu_density & 7) << 2);
3905                 cmd->is_qos_sta = 1;
3906         }
3907
3908         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3909         kfree(cmd);
3910
3911         return rc;
3912 }
3913
3914 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3915                                           struct ieee80211_vif *vif)
3916 {
3917         struct mwl8k_cmd_set_new_stn *cmd;
3918         int rc;
3919
3920         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3921         if (cmd == NULL)
3922                 return -ENOMEM;
3923
3924         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3925         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3926         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3927
3928         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3929         kfree(cmd);
3930
3931         return rc;
3932 }
3933
3934 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3935                                      struct ieee80211_vif *vif, u8 *addr)
3936 {
3937         struct mwl8k_cmd_set_new_stn *cmd;
3938         struct mwl8k_priv *priv = hw->priv;
3939         int rc, i;
3940         u8 idx;
3941
3942         spin_lock(&priv->stream_lock);
3943         /* Destroy any active ampdu streams for this sta */
3944         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
3945                 struct mwl8k_ampdu_stream *s;
3946                 s = &priv->ampdu[i];
3947                 if (s->state != AMPDU_NO_STREAM) {
3948                         if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
3949                                 if (s->state == AMPDU_STREAM_ACTIVE) {
3950                                         idx = s->idx;
3951                                         spin_unlock(&priv->stream_lock);
3952                                         mwl8k_destroy_ba(hw, idx);
3953                                         spin_lock(&priv->stream_lock);
3954                                 } else if (s->state == AMPDU_STREAM_NEW) {
3955                                         mwl8k_remove_stream(hw, s);
3956                                 }
3957                         }
3958                 }
3959         }
3960
3961         spin_unlock(&priv->stream_lock);
3962
3963         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3964         if (cmd == NULL)
3965                 return -ENOMEM;
3966
3967         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3968         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3969         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3970         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3971
3972         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3973         kfree(cmd);
3974
3975         return rc;
3976 }
3977
3978 /*
3979  * CMD_UPDATE_ENCRYPTION.
3980  */
3981
3982 #define MAX_ENCR_KEY_LENGTH     16
3983 #define MIC_KEY_LENGTH          8
3984
3985 struct mwl8k_cmd_update_encryption {
3986         struct mwl8k_cmd_pkt header;
3987
3988         __le32 action;
3989         __le32 reserved;
3990         __u8 mac_addr[6];
3991         __u8 encr_type;
3992
3993 } __packed;
3994
3995 struct mwl8k_cmd_set_key {
3996         struct mwl8k_cmd_pkt header;
3997
3998         __le32 action;
3999         __le32 reserved;
4000         __le16 length;
4001         __le16 key_type_id;
4002         __le32 key_info;
4003         __le32 key_id;
4004         __le16 key_len;
4005         __u8 key_material[MAX_ENCR_KEY_LENGTH];
4006         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4007         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4008         __le16 tkip_rsc_low;
4009         __le32 tkip_rsc_high;
4010         __le16 tkip_tsc_low;
4011         __le32 tkip_tsc_high;
4012         __u8 mac_addr[6];
4013 } __packed;
4014
4015 enum {
4016         MWL8K_ENCR_ENABLE,
4017         MWL8K_ENCR_SET_KEY,
4018         MWL8K_ENCR_REMOVE_KEY,
4019         MWL8K_ENCR_SET_GROUP_KEY,
4020 };
4021
4022 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
4023 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
4024 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
4025 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
4026 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
4027
4028 enum {
4029         MWL8K_ALG_WEP,
4030         MWL8K_ALG_TKIP,
4031         MWL8K_ALG_CCMP,
4032 };
4033
4034 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
4035 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
4036 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
4037 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
4038 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
4039
4040 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4041                                               struct ieee80211_vif *vif,
4042                                               u8 *addr,
4043                                               u8 encr_type)
4044 {
4045         struct mwl8k_cmd_update_encryption *cmd;
4046         int rc;
4047
4048         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4049         if (cmd == NULL)
4050                 return -ENOMEM;
4051
4052         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4053         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4054         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4055         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4056         cmd->encr_type = encr_type;
4057
4058         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4059         kfree(cmd);
4060
4061         return rc;
4062 }
4063
4064 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4065                                                 u8 *addr,
4066                                                 struct ieee80211_key_conf *key)
4067 {
4068         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4069         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4070         cmd->length = cpu_to_le16(sizeof(*cmd) -
4071                                 offsetof(struct mwl8k_cmd_set_key, length));
4072         cmd->key_id = cpu_to_le32(key->keyidx);
4073         cmd->key_len = cpu_to_le16(key->keylen);
4074         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4075
4076         switch (key->cipher) {
4077         case WLAN_CIPHER_SUITE_WEP40:
4078         case WLAN_CIPHER_SUITE_WEP104:
4079                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4080                 if (key->keyidx == 0)
4081                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4082
4083                 break;
4084         case WLAN_CIPHER_SUITE_TKIP:
4085                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4086                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4087                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4088                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4089                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4090                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4091                 break;
4092         case WLAN_CIPHER_SUITE_CCMP:
4093                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4094                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4095                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4096                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4097                 break;
4098         default:
4099                 return -ENOTSUPP;
4100         }
4101
4102         return 0;
4103 }
4104
4105 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4106                                                 struct ieee80211_vif *vif,
4107                                                 u8 *addr,
4108                                                 struct ieee80211_key_conf *key)
4109 {
4110         struct mwl8k_cmd_set_key *cmd;
4111         int rc;
4112         int keymlen;
4113         u32 action;
4114         u8 idx;
4115         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4116
4117         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4118         if (cmd == NULL)
4119                 return -ENOMEM;
4120
4121         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4122         if (rc < 0)
4123                 goto done;
4124
4125         idx = key->keyidx;
4126
4127         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4128                 action = MWL8K_ENCR_SET_KEY;
4129         else
4130                 action = MWL8K_ENCR_SET_GROUP_KEY;
4131
4132         switch (key->cipher) {
4133         case WLAN_CIPHER_SUITE_WEP40:
4134         case WLAN_CIPHER_SUITE_WEP104:
4135                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4136                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4137                                                 sizeof(*key) + key->keylen);
4138                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4139                 }
4140
4141                 keymlen = key->keylen;
4142                 action = MWL8K_ENCR_SET_KEY;
4143                 break;
4144         case WLAN_CIPHER_SUITE_TKIP:
4145                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4146                 break;
4147         case WLAN_CIPHER_SUITE_CCMP:
4148                 keymlen = key->keylen;
4149                 break;
4150         default:
4151                 rc = -ENOTSUPP;
4152                 goto done;
4153         }
4154
4155         memcpy(cmd->key_material, key->key, keymlen);
4156         cmd->action = cpu_to_le32(action);
4157
4158         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4159 done:
4160         kfree(cmd);
4161
4162         return rc;
4163 }
4164
4165 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4166                                                 struct ieee80211_vif *vif,
4167                                                 u8 *addr,
4168                                                 struct ieee80211_key_conf *key)
4169 {
4170         struct mwl8k_cmd_set_key *cmd;
4171         int rc;
4172         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4173
4174         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4175         if (cmd == NULL)
4176                 return -ENOMEM;
4177
4178         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4179         if (rc < 0)
4180                 goto done;
4181
4182         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4183                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4184                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4185
4186         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4187
4188         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4189 done:
4190         kfree(cmd);
4191
4192         return rc;
4193 }
4194
4195 static int mwl8k_set_key(struct ieee80211_hw *hw,
4196                          enum set_key_cmd cmd_param,
4197                          struct ieee80211_vif *vif,
4198                          struct ieee80211_sta *sta,
4199                          struct ieee80211_key_conf *key)
4200 {
4201         int rc = 0;
4202         u8 encr_type;
4203         u8 *addr;
4204         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4205
4206         if (vif->type == NL80211_IFTYPE_STATION)
4207                 return -EOPNOTSUPP;
4208
4209         if (sta == NULL)
4210                 addr = vif->addr;
4211         else
4212                 addr = sta->addr;
4213
4214         if (cmd_param == SET_KEY) {
4215                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4216                 if (rc)
4217                         goto out;
4218
4219                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4220                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4221                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4222                 else
4223                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4224
4225                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4226                                                                 encr_type);
4227                 if (rc)
4228                         goto out;
4229
4230                 mwl8k_vif->is_hw_crypto_enabled = true;
4231
4232         } else {
4233                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4234
4235                 if (rc)
4236                         goto out;
4237         }
4238 out:
4239         return rc;
4240 }
4241
4242 /*
4243  * CMD_UPDATE_STADB.
4244  */
4245 struct ewc_ht_info {
4246         __le16  control1;
4247         __le16  control2;
4248         __le16  control3;
4249 } __packed;
4250
4251 struct peer_capability_info {
4252         /* Peer type - AP vs. STA.  */
4253         __u8    peer_type;
4254
4255         /* Basic 802.11 capabilities from assoc resp.  */
4256         __le16  basic_caps;
4257
4258         /* Set if peer supports 802.11n high throughput (HT).  */
4259         __u8    ht_support;
4260
4261         /* Valid if HT is supported.  */
4262         __le16  ht_caps;
4263         __u8    extended_ht_caps;
4264         struct ewc_ht_info      ewc_info;
4265
4266         /* Legacy rate table. Intersection of our rates and peer rates.  */
4267         __u8    legacy_rates[12];
4268
4269         /* HT rate table. Intersection of our rates and peer rates.  */
4270         __u8    ht_rates[16];
4271         __u8    pad[16];
4272
4273         /* If set, interoperability mode, no proprietary extensions.  */
4274         __u8    interop;
4275         __u8    pad2;
4276         __u8    station_id;
4277         __le16  amsdu_enabled;
4278 } __packed;
4279
4280 struct mwl8k_cmd_update_stadb {
4281         struct mwl8k_cmd_pkt header;
4282
4283         /* See STADB_ACTION_TYPE */
4284         __le32  action;
4285
4286         /* Peer MAC address */
4287         __u8    peer_addr[ETH_ALEN];
4288
4289         __le32  reserved;
4290
4291         /* Peer info - valid during add/update.  */
4292         struct peer_capability_info     peer_info;
4293 } __packed;
4294
4295 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4296 #define MWL8K_STA_DB_DEL_ENTRY          2
4297
4298 /* Peer Entry flags - used to define the type of the peer node */
4299 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4300
4301 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4302                                       struct ieee80211_vif *vif,
4303                                       struct ieee80211_sta *sta)
4304 {
4305         struct mwl8k_cmd_update_stadb *cmd;
4306         struct peer_capability_info *p;
4307         u32 rates;
4308         int rc;
4309
4310         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4311         if (cmd == NULL)
4312                 return -ENOMEM;
4313
4314         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4315         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4316         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4317         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4318
4319         p = &cmd->peer_info;
4320         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4321         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4322         p->ht_support = sta->ht_cap.ht_supported;
4323         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4324         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4325                 ((sta->ht_cap.ampdu_density & 7) << 2);
4326         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4327                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4328         else
4329                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4330         legacy_rate_mask_to_array(p->legacy_rates, rates);
4331         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4332         p->interop = 1;
4333         p->amsdu_enabled = 0;
4334
4335         rc = mwl8k_post_cmd(hw, &cmd->header);
4336         if (!rc)
4337                 rc = p->station_id;
4338         kfree(cmd);
4339
4340         return rc;
4341 }
4342
4343 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4344                                       struct ieee80211_vif *vif, u8 *addr)
4345 {
4346         struct mwl8k_cmd_update_stadb *cmd;
4347         int rc;
4348
4349         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4350         if (cmd == NULL)
4351                 return -ENOMEM;
4352
4353         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4354         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4355         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4356         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4357
4358         rc = mwl8k_post_cmd(hw, &cmd->header);
4359         kfree(cmd);
4360
4361         return rc;
4362 }
4363
4364
4365 /*
4366  * Interrupt handling.
4367  */
4368 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4369 {
4370         struct ieee80211_hw *hw = dev_id;
4371         struct mwl8k_priv *priv = hw->priv;
4372         u32 status;
4373
4374         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4375         if (!status)
4376                 return IRQ_NONE;
4377
4378         if (status & MWL8K_A2H_INT_TX_DONE) {
4379                 status &= ~MWL8K_A2H_INT_TX_DONE;
4380                 tasklet_schedule(&priv->poll_tx_task);
4381         }
4382
4383         if (status & MWL8K_A2H_INT_RX_READY) {
4384                 status &= ~MWL8K_A2H_INT_RX_READY;
4385                 tasklet_schedule(&priv->poll_rx_task);
4386         }
4387
4388         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4389                 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4390                           priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4391
4392                 atomic_inc(&priv->watchdog_event_pending);
4393                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4394                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4395         }
4396
4397         if (status)
4398                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4399
4400         if (status & MWL8K_A2H_INT_OPC_DONE) {
4401                 if (priv->hostcmd_wait != NULL)
4402                         complete(priv->hostcmd_wait);
4403         }
4404
4405         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4406                 if (!mutex_is_locked(&priv->fw_mutex) &&
4407                     priv->radio_on && priv->pending_tx_pkts)
4408                         mwl8k_tx_start(priv);
4409         }
4410
4411         return IRQ_HANDLED;
4412 }
4413
4414 static void mwl8k_tx_poll(unsigned long data)
4415 {
4416         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4417         struct mwl8k_priv *priv = hw->priv;
4418         int limit;
4419         int i;
4420
4421         limit = 32;
4422
4423         spin_lock_bh(&priv->tx_lock);
4424
4425         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4426                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4427
4428         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4429                 complete(priv->tx_wait);
4430                 priv->tx_wait = NULL;
4431         }
4432
4433         spin_unlock_bh(&priv->tx_lock);
4434
4435         if (limit) {
4436                 writel(~MWL8K_A2H_INT_TX_DONE,
4437                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4438         } else {
4439                 tasklet_schedule(&priv->poll_tx_task);
4440         }
4441 }
4442
4443 static void mwl8k_rx_poll(unsigned long data)
4444 {
4445         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4446         struct mwl8k_priv *priv = hw->priv;
4447         int limit;
4448
4449         limit = 32;
4450         limit -= rxq_process(hw, 0, limit);
4451         limit -= rxq_refill(hw, 0, limit);
4452
4453         if (limit) {
4454                 writel(~MWL8K_A2H_INT_RX_READY,
4455                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4456         } else {
4457                 tasklet_schedule(&priv->poll_rx_task);
4458         }
4459 }
4460
4461
4462 /*
4463  * Core driver operations.
4464  */
4465 static void mwl8k_tx(struct ieee80211_hw *hw,
4466                      struct ieee80211_tx_control *control,
4467                      struct sk_buff *skb)
4468 {
4469         struct mwl8k_priv *priv = hw->priv;
4470         int index = skb_get_queue_mapping(skb);
4471
4472         if (!priv->radio_on) {
4473                 wiphy_debug(hw->wiphy,
4474                             "dropped TX frame since radio disabled\n");
4475                 dev_kfree_skb(skb);
4476                 return;
4477         }
4478
4479         mwl8k_txq_xmit(hw, index, control->sta, skb);
4480 }
4481
4482 static int mwl8k_start(struct ieee80211_hw *hw)
4483 {
4484         struct mwl8k_priv *priv = hw->priv;
4485         int rc;
4486
4487         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4488                          IRQF_SHARED, MWL8K_NAME, hw);
4489         if (rc) {
4490                 priv->irq = -1;
4491                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4492                 return -EIO;
4493         }
4494         priv->irq = priv->pdev->irq;
4495
4496         /* Enable TX reclaim and RX tasklets.  */
4497         tasklet_enable(&priv->poll_tx_task);
4498         tasklet_enable(&priv->poll_rx_task);
4499
4500         /* Enable interrupts */
4501         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4502         iowrite32(MWL8K_A2H_EVENTS,
4503                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4504
4505         rc = mwl8k_fw_lock(hw);
4506         if (!rc) {
4507                 rc = mwl8k_cmd_radio_enable(hw);
4508
4509                 if (!priv->ap_fw) {
4510                         if (!rc)
4511                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4512
4513                         if (!rc)
4514                                 rc = mwl8k_cmd_set_pre_scan(hw);
4515
4516                         if (!rc)
4517                                 rc = mwl8k_cmd_set_post_scan(hw,
4518                                                 "\x00\x00\x00\x00\x00\x00");
4519                 }
4520
4521                 if (!rc)
4522                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4523
4524                 if (!rc)
4525                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4526
4527                 mwl8k_fw_unlock(hw);
4528         }
4529
4530         if (rc) {
4531                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4532                 free_irq(priv->pdev->irq, hw);
4533                 priv->irq = -1;
4534                 tasklet_disable(&priv->poll_tx_task);
4535                 tasklet_disable(&priv->poll_rx_task);
4536         } else {
4537                 ieee80211_wake_queues(hw);
4538         }
4539
4540         return rc;
4541 }
4542
4543 static void mwl8k_stop(struct ieee80211_hw *hw)
4544 {
4545         struct mwl8k_priv *priv = hw->priv;
4546         int i;
4547
4548         if (!priv->hw_restart_in_progress)
4549                 mwl8k_cmd_radio_disable(hw);
4550
4551         ieee80211_stop_queues(hw);
4552
4553         /* Disable interrupts */
4554         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4555         if (priv->irq != -1) {
4556                 free_irq(priv->pdev->irq, hw);
4557                 priv->irq = -1;
4558         }
4559
4560         /* Stop finalize join worker */
4561         cancel_work_sync(&priv->finalize_join_worker);
4562         cancel_work_sync(&priv->watchdog_ba_handle);
4563         if (priv->beacon_skb != NULL)
4564                 dev_kfree_skb(priv->beacon_skb);
4565
4566         /* Stop TX reclaim and RX tasklets.  */
4567         tasklet_disable(&priv->poll_tx_task);
4568         tasklet_disable(&priv->poll_rx_task);
4569
4570         /* Return all skbs to mac80211 */
4571         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4572                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4573 }
4574
4575 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4576
4577 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4578                                struct ieee80211_vif *vif)
4579 {
4580         struct mwl8k_priv *priv = hw->priv;
4581         struct mwl8k_vif *mwl8k_vif;
4582         u32 macids_supported;
4583         int macid, rc;
4584         struct mwl8k_device_info *di;
4585
4586         /*
4587          * Reject interface creation if sniffer mode is active, as
4588          * STA operation is mutually exclusive with hardware sniffer
4589          * mode.  (Sniffer mode is only used on STA firmware.)
4590          */
4591         if (priv->sniffer_enabled) {
4592                 wiphy_info(hw->wiphy,
4593                            "unable to create STA interface because sniffer mode is enabled\n");
4594                 return -EINVAL;
4595         }
4596
4597         di = priv->device_info;
4598         switch (vif->type) {
4599         case NL80211_IFTYPE_AP:
4600                 if (!priv->ap_fw && di->fw_image_ap) {
4601                         /* we must load the ap fw to meet this request */
4602                         if (!list_empty(&priv->vif_list))
4603                                 return -EBUSY;
4604                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4605                         if (rc)
4606                                 return rc;
4607                 }
4608                 macids_supported = priv->ap_macids_supported;
4609                 break;
4610         case NL80211_IFTYPE_STATION:
4611                 if (priv->ap_fw && di->fw_image_sta) {
4612                         /* we must load the sta fw to meet this request */
4613                         if (!list_empty(&priv->vif_list))
4614                                 return -EBUSY;
4615                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4616                         if (rc)
4617                                 return rc;
4618                 }
4619                 macids_supported = priv->sta_macids_supported;
4620                 break;
4621         default:
4622                 return -EINVAL;
4623         }
4624
4625         macid = ffs(macids_supported & ~priv->macids_used);
4626         if (!macid--)
4627                 return -EBUSY;
4628
4629         /* Setup driver private area. */
4630         mwl8k_vif = MWL8K_VIF(vif);
4631         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4632         mwl8k_vif->vif = vif;
4633         mwl8k_vif->macid = macid;
4634         mwl8k_vif->seqno = 0;
4635         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4636         mwl8k_vif->is_hw_crypto_enabled = false;
4637
4638         /* Set the mac address.  */
4639         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4640
4641         if (priv->ap_fw)
4642                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4643
4644         priv->macids_used |= 1 << mwl8k_vif->macid;
4645         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4646
4647         return 0;
4648 }
4649
4650 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4651 {
4652         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4653         if (!priv->macids_used)
4654                 return;
4655
4656         priv->macids_used &= ~(1 << vif->macid);
4657         list_del(&vif->list);
4658 }
4659
4660 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4661                                    struct ieee80211_vif *vif)
4662 {
4663         struct mwl8k_priv *priv = hw->priv;
4664         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4665
4666         if (priv->ap_fw)
4667                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4668
4669         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4670
4671         mwl8k_remove_vif(priv, mwl8k_vif);
4672 }
4673
4674 static void mwl8k_hw_restart_work(struct work_struct *work)
4675 {
4676         struct mwl8k_priv *priv =
4677                 container_of(work, struct mwl8k_priv, fw_reload);
4678         struct ieee80211_hw *hw = priv->hw;
4679         struct mwl8k_device_info *di;
4680         int rc;
4681
4682         /* If some command is waiting for a response, clear it */
4683         if (priv->hostcmd_wait != NULL) {
4684                 complete(priv->hostcmd_wait);
4685                 priv->hostcmd_wait = NULL;
4686         }
4687
4688         priv->hw_restart_owner = current;
4689         di = priv->device_info;
4690         mwl8k_fw_lock(hw);
4691
4692         if (priv->ap_fw)
4693                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4694         else
4695                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4696
4697         if (rc)
4698                 goto fail;
4699
4700         priv->hw_restart_owner = NULL;
4701         priv->hw_restart_in_progress = false;
4702
4703         /*
4704          * This unlock will wake up the queues and
4705          * also opens the command path for other
4706          * commands
4707          */
4708         mwl8k_fw_unlock(hw);
4709
4710         ieee80211_restart_hw(hw);
4711
4712         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4713
4714         return;
4715 fail:
4716         mwl8k_fw_unlock(hw);
4717
4718         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4719 }
4720
4721 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4722 {
4723         struct ieee80211_conf *conf = &hw->conf;
4724         struct mwl8k_priv *priv = hw->priv;
4725         int rc;
4726
4727         if (conf->flags & IEEE80211_CONF_IDLE) {
4728                 mwl8k_cmd_radio_disable(hw);
4729                 return 0;
4730         }
4731
4732         rc = mwl8k_fw_lock(hw);
4733         if (rc)
4734                 return rc;
4735
4736         rc = mwl8k_cmd_radio_enable(hw);
4737         if (rc)
4738                 goto out;
4739
4740         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4741         if (rc)
4742                 goto out;
4743
4744         if (conf->power_level > 18)
4745                 conf->power_level = 18;
4746
4747         if (priv->ap_fw) {
4748
4749                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4750                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4751                         if (rc)
4752                                 goto out;
4753                 }
4754
4755                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4756                 if (rc)
4757                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4758                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4759                 if (rc)
4760                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4761
4762         } else {
4763                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4764                 if (rc)
4765                         goto out;
4766                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4767         }
4768
4769 out:
4770         mwl8k_fw_unlock(hw);
4771
4772         return rc;
4773 }
4774
4775 static void
4776 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4777                            struct ieee80211_bss_conf *info, u32 changed)
4778 {
4779         struct mwl8k_priv *priv = hw->priv;
4780         u32 ap_legacy_rates = 0;
4781         u8 ap_mcs_rates[16];
4782         int rc;
4783
4784         if (mwl8k_fw_lock(hw))
4785                 return;
4786
4787         /*
4788          * No need to capture a beacon if we're no longer associated.
4789          */
4790         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4791                 priv->capture_beacon = false;
4792
4793         /*
4794          * Get the AP's legacy and MCS rates.
4795          */
4796         if (vif->bss_conf.assoc) {
4797                 struct ieee80211_sta *ap;
4798
4799                 rcu_read_lock();
4800
4801                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4802                 if (ap == NULL) {
4803                         rcu_read_unlock();
4804                         goto out;
4805                 }
4806
4807                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4808                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4809                 } else {
4810                         ap_legacy_rates =
4811                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4812                 }
4813                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4814
4815                 rcu_read_unlock();
4816         }
4817
4818         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4819                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4820                 if (rc)
4821                         goto out;
4822
4823                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4824                 if (rc)
4825                         goto out;
4826         }
4827
4828         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4829                 rc = mwl8k_set_radio_preamble(hw,
4830                                 vif->bss_conf.use_short_preamble);
4831                 if (rc)
4832                         goto out;
4833         }
4834
4835         if (changed & BSS_CHANGED_ERP_SLOT) {
4836                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4837                 if (rc)
4838                         goto out;
4839         }
4840
4841         if (vif->bss_conf.assoc &&
4842             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4843                         BSS_CHANGED_HT))) {
4844                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4845                 if (rc)
4846                         goto out;
4847         }
4848
4849         if (vif->bss_conf.assoc &&
4850             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4851                 /*
4852                  * Finalize the join.  Tell rx handler to process
4853                  * next beacon from our BSSID.
4854                  */
4855                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4856                 priv->capture_beacon = true;
4857         }
4858
4859 out:
4860         mwl8k_fw_unlock(hw);
4861 }
4862
4863 static void
4864 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4865                           struct ieee80211_bss_conf *info, u32 changed)
4866 {
4867         int rc;
4868
4869         if (mwl8k_fw_lock(hw))
4870                 return;
4871
4872         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4873                 rc = mwl8k_set_radio_preamble(hw,
4874                                 vif->bss_conf.use_short_preamble);
4875                 if (rc)
4876                         goto out;
4877         }
4878
4879         if (changed & BSS_CHANGED_BASIC_RATES) {
4880                 int idx;
4881                 int rate;
4882
4883                 /*
4884                  * Use lowest supported basic rate for multicasts
4885                  * and management frames (such as probe responses --
4886                  * beacons will always go out at 1 Mb/s).
4887                  */
4888                 idx = ffs(vif->bss_conf.basic_rates);
4889                 if (idx)
4890                         idx--;
4891
4892                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4893                         rate = mwl8k_rates_24[idx].hw_value;
4894                 else
4895                         rate = mwl8k_rates_50[idx].hw_value;
4896
4897                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4898         }
4899
4900         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4901                 struct sk_buff *skb;
4902
4903                 skb = ieee80211_beacon_get(hw, vif);
4904                 if (skb != NULL) {
4905                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4906                         kfree_skb(skb);
4907                 }
4908         }
4909
4910         if (changed & BSS_CHANGED_BEACON_ENABLED)
4911                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4912
4913 out:
4914         mwl8k_fw_unlock(hw);
4915 }
4916
4917 static void
4918 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4919                        struct ieee80211_bss_conf *info, u32 changed)
4920 {
4921         struct mwl8k_priv *priv = hw->priv;
4922
4923         if (!priv->ap_fw)
4924                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4925         else
4926                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4927 }
4928
4929 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4930                                    struct netdev_hw_addr_list *mc_list)
4931 {
4932         struct mwl8k_cmd_pkt *cmd;
4933
4934         /*
4935          * Synthesize and return a command packet that programs the
4936          * hardware multicast address filter.  At this point we don't
4937          * know whether FIF_ALLMULTI is being requested, but if it is,
4938          * we'll end up throwing this packet away and creating a new
4939          * one in mwl8k_configure_filter().
4940          */
4941         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4942
4943         return (unsigned long)cmd;
4944 }
4945
4946 static int
4947 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4948                                unsigned int changed_flags,
4949                                unsigned int *total_flags)
4950 {
4951         struct mwl8k_priv *priv = hw->priv;
4952
4953         /*
4954          * Hardware sniffer mode is mutually exclusive with STA
4955          * operation, so refuse to enable sniffer mode if a STA
4956          * interface is active.
4957          */
4958         if (!list_empty(&priv->vif_list)) {
4959                 if (net_ratelimit())
4960                         wiphy_info(hw->wiphy,
4961                                    "not enabling sniffer mode because STA interface is active\n");
4962                 return 0;
4963         }
4964
4965         if (!priv->sniffer_enabled) {
4966                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4967                         return 0;
4968                 priv->sniffer_enabled = true;
4969         }
4970
4971         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4972                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4973                         FIF_OTHER_BSS;
4974
4975         return 1;
4976 }
4977
4978 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4979 {
4980         if (!list_empty(&priv->vif_list))
4981                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4982
4983         return NULL;
4984 }
4985
4986 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4987                                    unsigned int changed_flags,
4988                                    unsigned int *total_flags,
4989                                    u64 multicast)
4990 {
4991         struct mwl8k_priv *priv = hw->priv;
4992         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4993
4994         /*
4995          * AP firmware doesn't allow fine-grained control over
4996          * the receive filter.
4997          */
4998         if (priv->ap_fw) {
4999                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5000                 kfree(cmd);
5001                 return;
5002         }
5003
5004         /*
5005          * Enable hardware sniffer mode if FIF_CONTROL or
5006          * FIF_OTHER_BSS is requested.
5007          */
5008         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5009             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5010                 kfree(cmd);
5011                 return;
5012         }
5013
5014         /* Clear unsupported feature flags */
5015         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5016
5017         if (mwl8k_fw_lock(hw)) {
5018                 kfree(cmd);
5019                 return;
5020         }
5021
5022         if (priv->sniffer_enabled) {
5023                 mwl8k_cmd_enable_sniffer(hw, 0);
5024                 priv->sniffer_enabled = false;
5025         }
5026
5027         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5028                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5029                         /*
5030                          * Disable the BSS filter.
5031                          */
5032                         mwl8k_cmd_set_pre_scan(hw);
5033                 } else {
5034                         struct mwl8k_vif *mwl8k_vif;
5035                         const u8 *bssid;
5036
5037                         /*
5038                          * Enable the BSS filter.
5039                          *
5040                          * If there is an active STA interface, use that
5041                          * interface's BSSID, otherwise use a dummy one
5042                          * (where the OUI part needs to be nonzero for
5043                          * the BSSID to be accepted by POST_SCAN).
5044                          */
5045                         mwl8k_vif = mwl8k_first_vif(priv);
5046                         if (mwl8k_vif != NULL)
5047                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
5048                         else
5049                                 bssid = "\x01\x00\x00\x00\x00\x00";
5050
5051                         mwl8k_cmd_set_post_scan(hw, bssid);
5052                 }
5053         }
5054
5055         /*
5056          * If FIF_ALLMULTI is being requested, throw away the command
5057          * packet that ->prepare_multicast() built and replace it with
5058          * a command packet that enables reception of all multicast
5059          * packets.
5060          */
5061         if (*total_flags & FIF_ALLMULTI) {
5062                 kfree(cmd);
5063                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5064         }
5065
5066         if (cmd != NULL) {
5067                 mwl8k_post_cmd(hw, cmd);
5068                 kfree(cmd);
5069         }
5070
5071         mwl8k_fw_unlock(hw);
5072 }
5073
5074 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5075 {
5076         return mwl8k_cmd_set_rts_threshold(hw, value);
5077 }
5078
5079 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5080                             struct ieee80211_vif *vif,
5081                             struct ieee80211_sta *sta)
5082 {
5083         struct mwl8k_priv *priv = hw->priv;
5084
5085         if (priv->ap_fw)
5086                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5087         else
5088                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5089 }
5090
5091 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5092                          struct ieee80211_vif *vif,
5093                          struct ieee80211_sta *sta)
5094 {
5095         struct mwl8k_priv *priv = hw->priv;
5096         int ret;
5097         int i;
5098         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5099         struct ieee80211_key_conf *key;
5100
5101         if (!priv->ap_fw) {
5102                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5103                 if (ret >= 0) {
5104                         MWL8K_STA(sta)->peer_id = ret;
5105                         if (sta->ht_cap.ht_supported)
5106                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5107                         ret = 0;
5108                 }
5109
5110         } else {
5111                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5112         }
5113
5114         for (i = 0; i < NUM_WEP_KEYS; i++) {
5115                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5116                 if (mwl8k_vif->wep_key_conf[i].enabled)
5117                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5118         }
5119         return ret;
5120 }
5121
5122 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5123                          struct ieee80211_vif *vif, u16 queue,
5124                          const struct ieee80211_tx_queue_params *params)
5125 {
5126         struct mwl8k_priv *priv = hw->priv;
5127         int rc;
5128
5129         rc = mwl8k_fw_lock(hw);
5130         if (!rc) {
5131                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5132                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5133
5134                 if (!priv->wmm_enabled)
5135                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5136
5137                 if (!rc) {
5138                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5139                         rc = mwl8k_cmd_set_edca_params(hw, q,
5140                                                        params->cw_min,
5141                                                        params->cw_max,
5142                                                        params->aifs,
5143                                                        params->txop);
5144                 }
5145
5146                 mwl8k_fw_unlock(hw);
5147         }
5148
5149         return rc;
5150 }
5151
5152 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5153                            struct ieee80211_low_level_stats *stats)
5154 {
5155         return mwl8k_cmd_get_stat(hw, stats);
5156 }
5157
5158 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5159                                 struct survey_info *survey)
5160 {
5161         struct mwl8k_priv *priv = hw->priv;
5162         struct ieee80211_conf *conf = &hw->conf;
5163
5164         if (idx != 0)
5165                 return -ENOENT;
5166
5167         survey->channel = conf->channel;
5168         survey->filled = SURVEY_INFO_NOISE_DBM;
5169         survey->noise = priv->noise;
5170
5171         return 0;
5172 }
5173
5174 #define MAX_AMPDU_ATTEMPTS 5
5175
5176 static int
5177 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5178                    enum ieee80211_ampdu_mlme_action action,
5179                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5180                    u8 buf_size)
5181 {
5182
5183         int i, rc = 0;
5184         struct mwl8k_priv *priv = hw->priv;
5185         struct mwl8k_ampdu_stream *stream;
5186         u8 *addr = sta->addr, idx;
5187         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5188
5189         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5190                 return -ENOTSUPP;
5191
5192         spin_lock(&priv->stream_lock);
5193         stream = mwl8k_lookup_stream(hw, addr, tid);
5194
5195         switch (action) {
5196         case IEEE80211_AMPDU_RX_START:
5197         case IEEE80211_AMPDU_RX_STOP:
5198                 break;
5199         case IEEE80211_AMPDU_TX_START:
5200                 /* By the time we get here the hw queues may contain outgoing
5201                  * packets for this RA/TID that are not part of this BA
5202                  * session.  The hw will assign sequence numbers to these
5203                  * packets as they go out.  So if we query the hw for its next
5204                  * sequence number and use that for the SSN here, it may end up
5205                  * being wrong, which will lead to sequence number mismatch at
5206                  * the recipient.  To avoid this, we reset the sequence number
5207                  * to O for the first MPDU in this BA stream.
5208                  */
5209                 *ssn = 0;
5210                 if (stream == NULL) {
5211                         /* This means that somebody outside this driver called
5212                          * ieee80211_start_tx_ba_session.  This is unexpected
5213                          * because we do our own rate control.  Just warn and
5214                          * move on.
5215                          */
5216                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5217                                    "Proceeding anyway.\n", __func__);
5218                         stream = mwl8k_add_stream(hw, sta, tid);
5219                 }
5220                 if (stream == NULL) {
5221                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5222                         rc = -EBUSY;
5223                         break;
5224                 }
5225                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5226
5227                 /* Release the lock before we do the time consuming stuff */
5228                 spin_unlock(&priv->stream_lock);
5229                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5230
5231                         /* Check if link is still valid */
5232                         if (!sta_info->is_ampdu_allowed) {
5233                                 spin_lock(&priv->stream_lock);
5234                                 mwl8k_remove_stream(hw, stream);
5235                                 spin_unlock(&priv->stream_lock);
5236                                 return -EBUSY;
5237                         }
5238
5239                         rc = mwl8k_check_ba(hw, stream, vif);
5240
5241                         /* If HW restart is in progress mwl8k_post_cmd will
5242                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5243                          * such cases
5244                          */
5245                         if (!rc || rc == -EBUSY)
5246                                 break;
5247                         /*
5248                          * HW queues take time to be flushed, give them
5249                          * sufficient time
5250                          */
5251
5252                         msleep(1000);
5253                 }
5254                 spin_lock(&priv->stream_lock);
5255                 if (rc) {
5256                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5257                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5258                         mwl8k_remove_stream(hw, stream);
5259                         rc = -EBUSY;
5260                         break;
5261                 }
5262                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5263                 break;
5264         case IEEE80211_AMPDU_TX_STOP_CONT:
5265         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5266         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5267                 if (stream) {
5268                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5269                                 idx = stream->idx;
5270                                 spin_unlock(&priv->stream_lock);
5271                                 mwl8k_destroy_ba(hw, idx);
5272                                 spin_lock(&priv->stream_lock);
5273                         }
5274                         mwl8k_remove_stream(hw, stream);
5275                 }
5276                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5277                 break;
5278         case IEEE80211_AMPDU_TX_OPERATIONAL:
5279                 BUG_ON(stream == NULL);
5280                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5281                 spin_unlock(&priv->stream_lock);
5282                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5283                 spin_lock(&priv->stream_lock);
5284                 if (!rc)
5285                         stream->state = AMPDU_STREAM_ACTIVE;
5286                 else {
5287                         idx = stream->idx;
5288                         spin_unlock(&priv->stream_lock);
5289                         mwl8k_destroy_ba(hw, idx);
5290                         spin_lock(&priv->stream_lock);
5291                         wiphy_debug(hw->wiphy,
5292                                 "Failed adding stream for sta %pM tid %d\n",
5293                                 addr, tid);
5294                         mwl8k_remove_stream(hw, stream);
5295                 }
5296                 break;
5297
5298         default:
5299                 rc = -ENOTSUPP;
5300         }
5301
5302         spin_unlock(&priv->stream_lock);
5303         return rc;
5304 }
5305
5306 static const struct ieee80211_ops mwl8k_ops = {
5307         .tx                     = mwl8k_tx,
5308         .start                  = mwl8k_start,
5309         .stop                   = mwl8k_stop,
5310         .add_interface          = mwl8k_add_interface,
5311         .remove_interface       = mwl8k_remove_interface,
5312         .config                 = mwl8k_config,
5313         .bss_info_changed       = mwl8k_bss_info_changed,
5314         .prepare_multicast      = mwl8k_prepare_multicast,
5315         .configure_filter       = mwl8k_configure_filter,
5316         .set_key                = mwl8k_set_key,
5317         .set_rts_threshold      = mwl8k_set_rts_threshold,
5318         .sta_add                = mwl8k_sta_add,
5319         .sta_remove             = mwl8k_sta_remove,
5320         .conf_tx                = mwl8k_conf_tx,
5321         .get_stats              = mwl8k_get_stats,
5322         .get_survey             = mwl8k_get_survey,
5323         .ampdu_action           = mwl8k_ampdu_action,
5324 };
5325
5326 static void mwl8k_finalize_join_worker(struct work_struct *work)
5327 {
5328         struct mwl8k_priv *priv =
5329                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5330         struct sk_buff *skb = priv->beacon_skb;
5331         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5332         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5333         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5334                                          mgmt->u.beacon.variable, len);
5335         int dtim_period = 1;
5336
5337         if (tim && tim[1] >= 2)
5338                 dtim_period = tim[3];
5339
5340         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5341
5342         dev_kfree_skb(skb);
5343         priv->beacon_skb = NULL;
5344 }
5345
5346 enum {
5347         MWL8363 = 0,
5348         MWL8687,
5349         MWL8366,
5350 };
5351
5352 #define MWL8K_8366_AP_FW_API 3
5353 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5354 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5355
5356 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5357         [MWL8363] = {
5358                 .part_name      = "88w8363",
5359                 .helper_image   = "mwl8k/helper_8363.fw",
5360                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5361         },
5362         [MWL8687] = {
5363                 .part_name      = "88w8687",
5364                 .helper_image   = "mwl8k/helper_8687.fw",
5365                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5366         },
5367         [MWL8366] = {
5368                 .part_name      = "88w8366",
5369                 .helper_image   = "mwl8k/helper_8366.fw",
5370                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5371                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5372                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5373                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5374         },
5375 };
5376
5377 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5378 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5379 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5380 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5381 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5382 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5383 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5384
5385 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5386         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5387         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5388         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5389         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5390         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5391         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5392         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5393         { },
5394 };
5395 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5396
5397 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5398 {
5399         int rc;
5400         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5401                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5402                priv->fw_pref, priv->fw_alt);
5403         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5404         if (rc) {
5405                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5406                        pci_name(priv->pdev), priv->fw_alt);
5407                 return rc;
5408         }
5409         return 0;
5410 }
5411
5412 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5413 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5414 {
5415         struct mwl8k_priv *priv = context;
5416         struct mwl8k_device_info *di = priv->device_info;
5417         int rc;
5418
5419         switch (priv->fw_state) {
5420         case FW_STATE_INIT:
5421                 if (!fw) {
5422                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5423                                pci_name(priv->pdev), di->helper_image);
5424                         goto fail;
5425                 }
5426                 priv->fw_helper = fw;
5427                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5428                                       true);
5429                 if (rc && priv->fw_alt) {
5430                         rc = mwl8k_request_alt_fw(priv);
5431                         if (rc)
5432                                 goto fail;
5433                         priv->fw_state = FW_STATE_LOADING_ALT;
5434                 } else if (rc)
5435                         goto fail;
5436                 else
5437                         priv->fw_state = FW_STATE_LOADING_PREF;
5438                 break;
5439
5440         case FW_STATE_LOADING_PREF:
5441                 if (!fw) {
5442                         if (priv->fw_alt) {
5443                                 rc = mwl8k_request_alt_fw(priv);
5444                                 if (rc)
5445                                         goto fail;
5446                                 priv->fw_state = FW_STATE_LOADING_ALT;
5447                         } else
5448                                 goto fail;
5449                 } else {
5450                         priv->fw_ucode = fw;
5451                         rc = mwl8k_firmware_load_success(priv);
5452                         if (rc)
5453                                 goto fail;
5454                         else
5455                                 complete(&priv->firmware_loading_complete);
5456                 }
5457                 break;
5458
5459         case FW_STATE_LOADING_ALT:
5460                 if (!fw) {
5461                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5462                                pci_name(priv->pdev), di->helper_image);
5463                         goto fail;
5464                 }
5465                 priv->fw_ucode = fw;
5466                 rc = mwl8k_firmware_load_success(priv);
5467                 if (rc)
5468                         goto fail;
5469                 else
5470                         complete(&priv->firmware_loading_complete);
5471                 break;
5472
5473         default:
5474                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5475                        MWL8K_NAME, priv->fw_state);
5476                 BUG_ON(1);
5477         }
5478
5479         return;
5480
5481 fail:
5482         priv->fw_state = FW_STATE_ERROR;
5483         complete(&priv->firmware_loading_complete);
5484         device_release_driver(&priv->pdev->dev);
5485         mwl8k_release_firmware(priv);
5486 }
5487
5488 #define MAX_RESTART_ATTEMPTS 1
5489 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5490                                bool nowait)
5491 {
5492         struct mwl8k_priv *priv = hw->priv;
5493         int rc;
5494         int count = MAX_RESTART_ATTEMPTS;
5495
5496 retry:
5497         /* Reset firmware and hardware */
5498         mwl8k_hw_reset(priv);
5499
5500         /* Ask userland hotplug daemon for the device firmware */
5501         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5502         if (rc) {
5503                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5504                 return rc;
5505         }
5506
5507         if (nowait)
5508                 return rc;
5509
5510         /* Load firmware into hardware */
5511         rc = mwl8k_load_firmware(hw);
5512         if (rc)
5513                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5514
5515         /* Reclaim memory once firmware is successfully loaded */
5516         mwl8k_release_firmware(priv);
5517
5518         if (rc && count) {
5519                 /* FW did not start successfully;
5520                  * lets try one more time
5521                  */
5522                 count--;
5523                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5524                 msleep(20);
5525                 goto retry;
5526         }
5527
5528         return rc;
5529 }
5530
5531 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5532 {
5533         struct mwl8k_priv *priv = hw->priv;
5534         int rc = 0;
5535         int i;
5536
5537         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5538                 rc = mwl8k_txq_init(hw, i);
5539                 if (rc)
5540                         break;
5541                 if (priv->ap_fw)
5542                         iowrite32(priv->txq[i].txd_dma,
5543                                   priv->sram + priv->txq_offset[i]);
5544         }
5545         return rc;
5546 }
5547
5548 /* initialize hw after successfully loading a firmware image */
5549 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5550 {
5551         struct mwl8k_priv *priv = hw->priv;
5552         int rc = 0;
5553         int i;
5554
5555         if (priv->ap_fw) {
5556                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5557                 if (priv->rxd_ops == NULL) {
5558                         wiphy_err(hw->wiphy,
5559                                   "Driver does not have AP firmware image support for this hardware\n");
5560                         rc = -ENOENT;
5561                         goto err_stop_firmware;
5562                 }
5563         } else {
5564                 priv->rxd_ops = &rxd_sta_ops;
5565         }
5566
5567         priv->sniffer_enabled = false;
5568         priv->wmm_enabled = false;
5569         priv->pending_tx_pkts = 0;
5570         atomic_set(&priv->watchdog_event_pending, 0);
5571
5572         rc = mwl8k_rxq_init(hw, 0);
5573         if (rc)
5574                 goto err_stop_firmware;
5575         rxq_refill(hw, 0, INT_MAX);
5576
5577         /* For the sta firmware, we need to know the dma addresses of tx queues
5578          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5579          * prior to issuing this command.  But for the AP case, we learn the
5580          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5581          * case we must initialize the tx queues after.
5582          */
5583         priv->num_ampdu_queues = 0;
5584         if (!priv->ap_fw) {
5585                 rc = mwl8k_init_txqs(hw);
5586                 if (rc)
5587                         goto err_free_queues;
5588         }
5589
5590         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5591         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5592         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5593                   MWL8K_A2H_INT_BA_WATCHDOG,
5594                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5595         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5596                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5597
5598         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5599                          IRQF_SHARED, MWL8K_NAME, hw);
5600         if (rc) {
5601                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5602                 goto err_free_queues;
5603         }
5604
5605         /*
5606          * When hw restart is requested,
5607          * mac80211 will take care of clearing
5608          * the ampdu streams, so do not clear
5609          * the ampdu state here
5610          */
5611         if (!priv->hw_restart_in_progress)
5612                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5613
5614         /*
5615          * Temporarily enable interrupts.  Initial firmware host
5616          * commands use interrupts and avoid polling.  Disable
5617          * interrupts when done.
5618          */
5619         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5620
5621         /* Get config data, mac addrs etc */
5622         if (priv->ap_fw) {
5623                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5624                 if (!rc)
5625                         rc = mwl8k_init_txqs(hw);
5626                 if (!rc)
5627                         rc = mwl8k_cmd_set_hw_spec(hw);
5628         } else {
5629                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5630         }
5631         if (rc) {
5632                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5633                 goto err_free_irq;
5634         }
5635
5636         /* Turn radio off */
5637         rc = mwl8k_cmd_radio_disable(hw);
5638         if (rc) {
5639                 wiphy_err(hw->wiphy, "Cannot disable\n");
5640                 goto err_free_irq;
5641         }
5642
5643         /* Clear MAC address */
5644         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5645         if (rc) {
5646                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5647                 goto err_free_irq;
5648         }
5649
5650         /* Disable interrupts */
5651         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5652         free_irq(priv->pdev->irq, hw);
5653
5654         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5655                    priv->device_info->part_name,
5656                    priv->hw_rev, hw->wiphy->perm_addr,
5657                    priv->ap_fw ? "AP" : "STA",
5658                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5659                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5660
5661         return 0;
5662
5663 err_free_irq:
5664         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5665         free_irq(priv->pdev->irq, hw);
5666
5667 err_free_queues:
5668         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5669                 mwl8k_txq_deinit(hw, i);
5670         mwl8k_rxq_deinit(hw, 0);
5671
5672 err_stop_firmware:
5673         mwl8k_hw_reset(priv);
5674
5675         return rc;
5676 }
5677
5678 /*
5679  * invoke mwl8k_reload_firmware to change the firmware image after the device
5680  * has already been registered
5681  */
5682 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5683 {
5684         int i, rc = 0;
5685         struct mwl8k_priv *priv = hw->priv;
5686         struct mwl8k_vif *vif, *tmp_vif;
5687
5688         mwl8k_stop(hw);
5689         mwl8k_rxq_deinit(hw, 0);
5690
5691         /*
5692          * All the existing interfaces are re-added by the ieee80211_reconfig;
5693          * which means driver should remove existing interfaces before calling
5694          * ieee80211_restart_hw
5695          */
5696         if (priv->hw_restart_in_progress)
5697                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5698                         mwl8k_remove_vif(priv, vif);
5699
5700         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5701                 mwl8k_txq_deinit(hw, i);
5702
5703         rc = mwl8k_init_firmware(hw, fw_image, false);
5704         if (rc)
5705                 goto fail;
5706
5707         rc = mwl8k_probe_hw(hw);
5708         if (rc)
5709                 goto fail;
5710
5711         if (priv->hw_restart_in_progress)
5712                 return rc;
5713
5714         rc = mwl8k_start(hw);
5715         if (rc)
5716                 goto fail;
5717
5718         rc = mwl8k_config(hw, ~0);
5719         if (rc)
5720                 goto fail;
5721
5722         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5723                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5724                 if (rc)
5725                         goto fail;
5726         }
5727
5728         return rc;
5729
5730 fail:
5731         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5732         return rc;
5733 }
5734
5735 static const struct ieee80211_iface_limit ap_if_limits[] = {
5736         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
5737 };
5738
5739 static const struct ieee80211_iface_combination ap_if_comb = {
5740         .limits = ap_if_limits,
5741         .n_limits = ARRAY_SIZE(ap_if_limits),
5742         .max_interfaces = 8,
5743         .num_different_channels = 1,
5744 };
5745
5746
5747 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5748 {
5749         struct ieee80211_hw *hw = priv->hw;
5750         int i, rc;
5751
5752         rc = mwl8k_load_firmware(hw);
5753         mwl8k_release_firmware(priv);
5754         if (rc) {
5755                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5756                 return rc;
5757         }
5758
5759         /*
5760          * Extra headroom is the size of the required DMA header
5761          * minus the size of the smallest 802.11 frame (CTS frame).
5762          */
5763         hw->extra_tx_headroom =
5764                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5765
5766         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5767
5768         hw->channel_change_time = 10;
5769
5770         hw->queues = MWL8K_TX_WMM_QUEUES;
5771
5772         /* Set rssi values to dBm */
5773         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5774
5775         /*
5776          * Ask mac80211 to not to trigger PS mode
5777          * based on PM bit of incoming frames.
5778          */
5779         if (priv->ap_fw)
5780                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5781
5782         hw->vif_data_size = sizeof(struct mwl8k_vif);
5783         hw->sta_data_size = sizeof(struct mwl8k_sta);
5784
5785         priv->macids_used = 0;
5786         INIT_LIST_HEAD(&priv->vif_list);
5787
5788         /* Set default radio state and preamble */
5789         priv->radio_on = false;
5790         priv->radio_short_preamble = false;
5791
5792         /* Finalize join worker */
5793         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5794         /* Handle watchdog ba events */
5795         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5796         /* To reload the firmware if it crashes */
5797         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5798
5799         /* TX reclaim and RX tasklets.  */
5800         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5801         tasklet_disable(&priv->poll_tx_task);
5802         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5803         tasklet_disable(&priv->poll_rx_task);
5804
5805         /* Power management cookie */
5806         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5807         if (priv->cookie == NULL)
5808                 return -ENOMEM;
5809
5810         mutex_init(&priv->fw_mutex);
5811         priv->fw_mutex_owner = NULL;
5812         priv->fw_mutex_depth = 0;
5813         priv->hostcmd_wait = NULL;
5814
5815         spin_lock_init(&priv->tx_lock);
5816
5817         spin_lock_init(&priv->stream_lock);
5818
5819         priv->tx_wait = NULL;
5820
5821         rc = mwl8k_probe_hw(hw);
5822         if (rc)
5823                 goto err_free_cookie;
5824
5825         hw->wiphy->interface_modes = 0;
5826
5827         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5828                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5829                 hw->wiphy->iface_combinations = &ap_if_comb;
5830                 hw->wiphy->n_iface_combinations = 1;
5831         }
5832
5833         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5834                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5835
5836         rc = ieee80211_register_hw(hw);
5837         if (rc) {
5838                 wiphy_err(hw->wiphy, "Cannot register device\n");
5839                 goto err_unprobe_hw;
5840         }
5841
5842         return 0;
5843
5844 err_unprobe_hw:
5845         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5846                 mwl8k_txq_deinit(hw, i);
5847         mwl8k_rxq_deinit(hw, 0);
5848
5849 err_free_cookie:
5850         if (priv->cookie != NULL)
5851                 pci_free_consistent(priv->pdev, 4,
5852                                 priv->cookie, priv->cookie_dma);
5853
5854         return rc;
5855 }
5856 static int mwl8k_probe(struct pci_dev *pdev,
5857                                  const struct pci_device_id *id)
5858 {
5859         static int printed_version;
5860         struct ieee80211_hw *hw;
5861         struct mwl8k_priv *priv;
5862         struct mwl8k_device_info *di;
5863         int rc;
5864
5865         if (!printed_version) {
5866                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5867                 printed_version = 1;
5868         }
5869
5870
5871         rc = pci_enable_device(pdev);
5872         if (rc) {
5873                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5874                        MWL8K_NAME);
5875                 return rc;
5876         }
5877
5878         rc = pci_request_regions(pdev, MWL8K_NAME);
5879         if (rc) {
5880                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5881                        MWL8K_NAME);
5882                 goto err_disable_device;
5883         }
5884
5885         pci_set_master(pdev);
5886
5887
5888         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5889         if (hw == NULL) {
5890                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5891                 rc = -ENOMEM;
5892                 goto err_free_reg;
5893         }
5894
5895         SET_IEEE80211_DEV(hw, &pdev->dev);
5896         pci_set_drvdata(pdev, hw);
5897
5898         priv = hw->priv;
5899         priv->hw = hw;
5900         priv->pdev = pdev;
5901         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5902
5903
5904         priv->sram = pci_iomap(pdev, 0, 0x10000);
5905         if (priv->sram == NULL) {
5906                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5907                 rc = -EIO;
5908                 goto err_iounmap;
5909         }
5910
5911         /*
5912          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5913          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5914          */
5915         priv->regs = pci_iomap(pdev, 1, 0x10000);
5916         if (priv->regs == NULL) {
5917                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5918                 if (priv->regs == NULL) {
5919                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5920                         rc = -EIO;
5921                         goto err_iounmap;
5922                 }
5923         }
5924
5925         /*
5926          * Choose the initial fw image depending on user input.  If a second
5927          * image is available, make it the alternative image that will be
5928          * loaded if the first one fails.
5929          */
5930         init_completion(&priv->firmware_loading_complete);
5931         di = priv->device_info;
5932         if (ap_mode_default && di->fw_image_ap) {
5933                 priv->fw_pref = di->fw_image_ap;
5934                 priv->fw_alt = di->fw_image_sta;
5935         } else if (!ap_mode_default && di->fw_image_sta) {
5936                 priv->fw_pref = di->fw_image_sta;
5937                 priv->fw_alt = di->fw_image_ap;
5938         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5939                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5940                 priv->fw_pref = di->fw_image_sta;
5941         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5942                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5943                 priv->fw_pref = di->fw_image_ap;
5944         }
5945         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5946         if (rc)
5947                 goto err_stop_firmware;
5948
5949         priv->hw_restart_in_progress = false;
5950
5951         return rc;
5952
5953 err_stop_firmware:
5954         mwl8k_hw_reset(priv);
5955
5956 err_iounmap:
5957         if (priv->regs != NULL)
5958                 pci_iounmap(pdev, priv->regs);
5959
5960         if (priv->sram != NULL)
5961                 pci_iounmap(pdev, priv->sram);
5962
5963         pci_set_drvdata(pdev, NULL);
5964         ieee80211_free_hw(hw);
5965
5966 err_free_reg:
5967         pci_release_regions(pdev);
5968
5969 err_disable_device:
5970         pci_disable_device(pdev);
5971
5972         return rc;
5973 }
5974
5975 static void mwl8k_remove(struct pci_dev *pdev)
5976 {
5977         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5978         struct mwl8k_priv *priv;
5979         int i;
5980
5981         if (hw == NULL)
5982                 return;
5983         priv = hw->priv;
5984
5985         wait_for_completion(&priv->firmware_loading_complete);
5986
5987         if (priv->fw_state == FW_STATE_ERROR) {
5988                 mwl8k_hw_reset(priv);
5989                 goto unmap;
5990         }
5991
5992         ieee80211_stop_queues(hw);
5993
5994         ieee80211_unregister_hw(hw);
5995
5996         /* Remove TX reclaim and RX tasklets.  */
5997         tasklet_kill(&priv->poll_tx_task);
5998         tasklet_kill(&priv->poll_rx_task);
5999
6000         /* Stop hardware */
6001         mwl8k_hw_reset(priv);
6002
6003         /* Return all skbs to mac80211 */
6004         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6005                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6006
6007         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6008                 mwl8k_txq_deinit(hw, i);
6009
6010         mwl8k_rxq_deinit(hw, 0);
6011
6012         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6013
6014 unmap:
6015         pci_iounmap(pdev, priv->regs);
6016         pci_iounmap(pdev, priv->sram);
6017         pci_set_drvdata(pdev, NULL);
6018         ieee80211_free_hw(hw);
6019         pci_release_regions(pdev);
6020         pci_disable_device(pdev);
6021 }
6022
6023 static struct pci_driver mwl8k_driver = {
6024         .name           = MWL8K_NAME,
6025         .id_table       = mwl8k_pci_id_table,
6026         .probe          = mwl8k_probe,
6027         .remove         = mwl8k_remove,
6028 };
6029
6030 module_pci_driver(mwl8k_driver);
6031
6032 MODULE_DESCRIPTION(MWL8K_DESC);
6033 MODULE_VERSION(MWL8K_VERSION);
6034 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6035 MODULE_LICENSE("GPL");