drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.13"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 struct rxd_ops {
 105         int rxd_size;
 106         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 107         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 108         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 109                            __le16 *qos, s8 *noise);
 110 };
 111
 112 struct mwl8k_device_info {
 113         char *part_name;
 114         char *helper_image;
 115         char *fw_image_sta;
 116         char *fw_image_ap;
 117         struct rxd_ops *ap_rxd_ops;
 118         u32 fw_api_ap;
 119 };
 120
 121 struct mwl8k_rx_queue {
 122         int rxd_count;
 123
 124         /* hw receives here */
 125         int head;
 126
 127         /* refill descs here */
 128         int tail;
 129
 130         void *rxd;
 131         dma_addr_t rxd_dma;
 132         struct {
 133                 struct sk_buff *skb;
 134                 DEFINE_DMA_UNMAP_ADDR(dma);
 135         } *buf;
 136 };
 137
 138 struct mwl8k_tx_queue {
 139         /* hw transmits here */
 140         int head;
 141
 142         /* sw appends here */
 143         int tail;
 144
 145         unsigned int len;
 146         struct mwl8k_tx_desc *txd;
 147         dma_addr_t txd_dma;
 148         struct sk_buff **skb;
 149 };
 150
 151 enum {
 152         AMPDU_NO_STREAM,
 153         AMPDU_STREAM_NEW,
 154         AMPDU_STREAM_IN_PROGRESS,
 155         AMPDU_STREAM_ACTIVE,
 156 };
 157
 158 struct mwl8k_ampdu_stream {
 159         struct ieee80211_sta *sta;
 160         u8 tid;
 161         u8 state;
 162         u8 idx;
 163         u8 txq_idx; /* index of this stream in priv->txq */
 164 };
 165
 166 struct mwl8k_priv {
 167         struct ieee80211_hw *hw;
 168         struct pci_dev *pdev;
 169         int irq;
 170
 171         struct mwl8k_device_info *device_info;
 172
 173         void __iomem *sram;
 174         void __iomem *regs;
 175
 176         /* firmware */
 177         const struct firmware *fw_helper;
 178         const struct firmware *fw_ucode;
 179
 180         /* hardware/firmware parameters */
 181         bool ap_fw;
 182         struct rxd_ops *rxd_ops;
 183         struct ieee80211_supported_band band_24;
 184         struct ieee80211_channel channels_24[14];
 185         struct ieee80211_rate rates_24[14];
 186         struct ieee80211_supported_band band_50;
 187         struct ieee80211_channel channels_50[4];
 188         struct ieee80211_rate rates_50[9];
 189         u32 ap_macids_supported;
 190         u32 sta_macids_supported;
 191
 192         /* Ampdu stream information */
 193         u8 num_ampdu_queues;
 194         spinlock_t stream_lock;
 195         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 196         struct work_struct watchdog_ba_handle;
 197
 198         /* firmware access */
 199         struct mutex fw_mutex;
 200         struct task_struct *fw_mutex_owner;
 201         struct task_struct *hw_restart_owner;
 202         int fw_mutex_depth;
 203         struct completion *hostcmd_wait;
 204
 205         /* lock held over TX and TX reap */
 206         spinlock_t tx_lock;
 207
 208         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 209         struct completion *tx_wait;
 210
 211         /* List of interfaces.  */
 212         u32 macids_used;
 213         struct list_head vif_list;
 214
 215         /* power management status cookie from firmware */
 216         u32 *cookie;
 217         dma_addr_t cookie_dma;
 218
 219         u16 num_mcaddrs;
 220         u8 hw_rev;
 221         u32 fw_rev;
 222
 223         /*
 224          * Running count of TX packets in flight, to avoid
 225          * iterating over the transmit rings each time.
 226          */
 227         int pending_tx_pkts;
 228
 229         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 230         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 231         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 232
 233         bool radio_on;
 234         bool radio_short_preamble;
 235         bool sniffer_enabled;
 236         bool wmm_enabled;
 237
 238         /* XXX need to convert this to handle multiple interfaces */
 239         bool capture_beacon;
 240         u8 capture_bssid[ETH_ALEN];
 241         struct sk_buff *beacon_skb;
 242
 243         /*
 244          * This FJ worker has to be global as it is scheduled from the
 245          * RX handler.  At this point we don't know which interface it
 246          * belongs to until the list of bssids waiting to complete join
 247          * is checked.
 248          */
 249         struct work_struct finalize_join_worker;
 250
 251         /* Tasklet to perform TX reclaim.  */
 252         struct tasklet_struct poll_tx_task;
 253
 254         /* Tasklet to perform RX.  */
 255         struct tasklet_struct poll_rx_task;
 256
 257         /* Most recently reported noise in dBm */
 258         s8 noise;
 259
 260         /*
 261          * preserve the queue configurations so they can be restored if/when
 262          * the firmware image is swapped.
 263          */
 264         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 265
 266         /* To perform the task of reloading the firmware */
 267         struct work_struct fw_reload;
 268         bool hw_restart_in_progress;
 269
 270         /* async firmware loading state */
 271         unsigned fw_state;
 272         char *fw_pref;
 273         char *fw_alt;
 274         struct completion firmware_loading_complete;
 275 };
 276
 277 #define MAX_WEP_KEY_LEN         13
 278 #define NUM_WEP_KEYS            4
 279
 280 /* Per interface specific private data */
 281 struct mwl8k_vif {
 282         struct list_head list;
 283         struct ieee80211_vif *vif;
 284
 285         /* Firmware macid for this vif.  */
 286         int macid;
 287
 288         /* Non AMPDU sequence number assigned by driver.  */
 289         u16 seqno;
 290
 291         /* Saved WEP keys */
 292         struct {
 293                 u8 enabled;
 294                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 295         } wep_key_conf[NUM_WEP_KEYS];
 296
 297         /* BSSID */
 298         u8 bssid[ETH_ALEN];
 299
 300         /* A flag to indicate is HW crypto is enabled for this bssid */
 301         bool is_hw_crypto_enabled;
 302 };
 303 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 304 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 305
 306 struct tx_traffic_info {
 307         u32 start_time;
 308         u32 pkts;
 309 };
 310
 311 #define MWL8K_MAX_TID 8
 312 struct mwl8k_sta {
 313         /* Index into station database. Returned by UPDATE_STADB.  */
 314         u8 peer_id;
 315         u8 is_ampdu_allowed;
 316         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 317 };
 318 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 319
 320 static const struct ieee80211_channel mwl8k_channels_24[] = {
 321         { .center_freq = 2412, .hw_value = 1, },
 322         { .center_freq = 2417, .hw_value = 2, },
 323         { .center_freq = 2422, .hw_value = 3, },
 324         { .center_freq = 2427, .hw_value = 4, },
 325         { .center_freq = 2432, .hw_value = 5, },
 326         { .center_freq = 2437, .hw_value = 6, },
 327         { .center_freq = 2442, .hw_value = 7, },
 328         { .center_freq = 2447, .hw_value = 8, },
 329         { .center_freq = 2452, .hw_value = 9, },
 330         { .center_freq = 2457, .hw_value = 10, },
 331         { .center_freq = 2462, .hw_value = 11, },
 332         { .center_freq = 2467, .hw_value = 12, },
 333         { .center_freq = 2472, .hw_value = 13, },
 334         { .center_freq = 2484, .hw_value = 14, },
 335 };
 336
 337 static const struct ieee80211_rate mwl8k_rates_24[] = {
 338         { .bitrate = 10, .hw_value = 2, },
 339         { .bitrate = 20, .hw_value = 4, },
 340         { .bitrate = 55, .hw_value = 11, },
 341         { .bitrate = 110, .hw_value = 22, },
 342         { .bitrate = 220, .hw_value = 44, },
 343         { .bitrate = 60, .hw_value = 12, },
 344         { .bitrate = 90, .hw_value = 18, },
 345         { .bitrate = 120, .hw_value = 24, },
 346         { .bitrate = 180, .hw_value = 36, },
 347         { .bitrate = 240, .hw_value = 48, },
 348         { .bitrate = 360, .hw_value = 72, },
 349         { .bitrate = 480, .hw_value = 96, },
 350         { .bitrate = 540, .hw_value = 108, },
 351         { .bitrate = 720, .hw_value = 144, },
 352 };
 353
 354 static const struct ieee80211_channel mwl8k_channels_50[] = {
 355         { .center_freq = 5180, .hw_value = 36, },
 356         { .center_freq = 5200, .hw_value = 40, },
 357         { .center_freq = 5220, .hw_value = 44, },
 358         { .center_freq = 5240, .hw_value = 48, },
 359 };
 360
 361 static const struct ieee80211_rate mwl8k_rates_50[] = {
 362         { .bitrate = 60, .hw_value = 12, },
 363         { .bitrate = 90, .hw_value = 18, },
 364         { .bitrate = 120, .hw_value = 24, },
 365         { .bitrate = 180, .hw_value = 36, },
 366         { .bitrate = 240, .hw_value = 48, },
 367         { .bitrate = 360, .hw_value = 72, },
 368         { .bitrate = 480, .hw_value = 96, },
 369         { .bitrate = 540, .hw_value = 108, },
 370         { .bitrate = 720, .hw_value = 144, },
 371 };
 372
 373 /* Set or get info from Firmware */
 374 #define MWL8K_CMD_GET                   0x0000
 375 #define MWL8K_CMD_SET                   0x0001
 376 #define MWL8K_CMD_SET_LIST              0x0002
 377
 378 /* Firmware command codes */
 379 #define MWL8K_CMD_CODE_DNLD             0x0001
 380 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 381 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 382 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 383 #define MWL8K_CMD_GET_STAT              0x0014
 384 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 385 #define MWL8K_CMD_RF_TX_POWER           0x001e
 386 #define MWL8K_CMD_TX_POWER              0x001f
 387 #define MWL8K_CMD_RF_ANTENNA            0x0020
 388 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 389 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 390 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 391 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 392 #define MWL8K_CMD_SET_AID               0x010d
 393 #define MWL8K_CMD_SET_RATE              0x0110
 394 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 395 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 396 #define MWL8K_CMD_SET_SLOT              0x0114
 397 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 398 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 399 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 400 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 401 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 402 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 403 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 404 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 405 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 406 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 407 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 408 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 409 #define MWL8K_CMD_UPDATE_STADB          0x1123
 410 #define MWL8K_CMD_BASTREAM              0x1125
 411
 412 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 413 {
 414         u16 command = le16_to_cpu(cmd);
 415
 416 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 417                                         snprintf(buf, bufsize, "%s", #x);\
 418                                         return buf;\
 419                                         } while (0)
 420         switch (command & ~0x8000) {
 421                 MWL8K_CMDNAME(CODE_DNLD);
 422                 MWL8K_CMDNAME(GET_HW_SPEC);
 423                 MWL8K_CMDNAME(SET_HW_SPEC);
 424                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 425                 MWL8K_CMDNAME(GET_STAT);
 426                 MWL8K_CMDNAME(RADIO_CONTROL);
 427                 MWL8K_CMDNAME(RF_TX_POWER);
 428                 MWL8K_CMDNAME(TX_POWER);
 429                 MWL8K_CMDNAME(RF_ANTENNA);
 430                 MWL8K_CMDNAME(SET_BEACON);
 431                 MWL8K_CMDNAME(SET_PRE_SCAN);
 432                 MWL8K_CMDNAME(SET_POST_SCAN);
 433                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 434                 MWL8K_CMDNAME(SET_AID);
 435                 MWL8K_CMDNAME(SET_RATE);
 436                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 437                 MWL8K_CMDNAME(RTS_THRESHOLD);
 438                 MWL8K_CMDNAME(SET_SLOT);
 439                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 440                 MWL8K_CMDNAME(SET_WMM_MODE);
 441                 MWL8K_CMDNAME(MIMO_CONFIG);
 442                 MWL8K_CMDNAME(USE_FIXED_RATE);
 443                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 444                 MWL8K_CMDNAME(SET_MAC_ADDR);
 445                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 446                 MWL8K_CMDNAME(BSS_START);
 447                 MWL8K_CMDNAME(SET_NEW_STN);
 448                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 449                 MWL8K_CMDNAME(UPDATE_STADB);
 450                 MWL8K_CMDNAME(BASTREAM);
 451                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 452         default:
 453                 snprintf(buf, bufsize, "0x%x", cmd);
 454         }
 455 #undef MWL8K_CMDNAME
 456
 457         return buf;
 458 }
 459
 460 /* Hardware and firmware reset */
 461 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 462 {
 463         iowrite32(MWL8K_H2A_INT_RESET,
 464                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 465         iowrite32(MWL8K_H2A_INT_RESET,
 466                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 467         msleep(20);
 468 }
 469
 470 /* Release fw image */
 471 static void mwl8k_release_fw(const struct firmware **fw)
 472 {
 473         if (*fw == NULL)
 474                 return;
 475         release_firmware(*fw);
 476         *fw = NULL;
 477 }
 478
 479 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 480 {
 481         mwl8k_release_fw(&priv->fw_ucode);
 482         mwl8k_release_fw(&priv->fw_helper);
 483 }
 484
 485 /* states for asynchronous f/w loading */
 486 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 487 enum {
 488         FW_STATE_INIT = 0,
 489         FW_STATE_LOADING_PREF,
 490         FW_STATE_LOADING_ALT,
 491         FW_STATE_ERROR,
 492 };
 493
 494 /* Request fw image */
 495 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 496                             const char *fname, const struct firmware **fw,
 497                             bool nowait)
 498 {
 499         /* release current image */
 500         if (*fw != NULL)
 501                 mwl8k_release_fw(fw);
 502
 503         if (nowait)
 504                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 505                                                &priv->pdev->dev, GFP_KERNEL,
 506                                                priv, mwl8k_fw_state_machine);
 507         else
 508                 return request_firmware(fw, fname, &priv->pdev->dev);
 509 }
 510
 511 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 512                                   bool nowait)
 513 {
 514         struct mwl8k_device_info *di = priv->device_info;
 515         int rc;
 516
 517         if (di->helper_image != NULL) {
 518                 if (nowait)
 519                         rc = mwl8k_request_fw(priv, di->helper_image,
 520                                               &priv->fw_helper, true);
 521                 else
 522                         rc = mwl8k_request_fw(priv, di->helper_image,
 523                                               &priv->fw_helper, false);
 524                 if (rc)
 525                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 526                                pci_name(priv->pdev), di->helper_image);
 527
 528                 if (rc || nowait)
 529                         return rc;
 530         }
 531
 532         if (nowait) {
 533                 /*
 534                  * if we get here, no helper image is needed.  Skip the
 535                  * FW_STATE_INIT state.
 536                  */
 537                 priv->fw_state = FW_STATE_LOADING_PREF;
 538                 rc = mwl8k_request_fw(priv, fw_image,
 539                                       &priv->fw_ucode,
 540                                       true);
 541         } else
 542                 rc = mwl8k_request_fw(priv, fw_image,
 543                                       &priv->fw_ucode, false);
 544         if (rc) {
 545                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 546                        pci_name(priv->pdev), fw_image);
 547                 mwl8k_release_fw(&priv->fw_helper);
 548                 return rc;
 549         }
 550
 551         return 0;
 552 }
 553
 554 struct mwl8k_cmd_pkt {
 555         __le16  code;
 556         __le16  length;
 557         __u8    seq_num;
 558         __u8    macid;
 559         __le16  result;
 560         char    payload[0];
 561 } __packed;
 562
 563 /*
 564  * Firmware loading.
 565  */
 566 static int
 567 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 568 {
 569         void __iomem *regs = priv->regs;
 570         dma_addr_t dma_addr;
 571         int loops;
 572
 573         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 574         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 575                 return -ENOMEM;
 576
 577         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 578         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 579         iowrite32(MWL8K_H2A_INT_DOORBELL,
 580                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 581         iowrite32(MWL8K_H2A_INT_DUMMY,
 582                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 583
 584         loops = 1000;
 585         do {
 586                 u32 int_code;
 587
 588                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 589                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 590                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 591                         break;
 592                 }
 593
 594                 cond_resched();
 595                 udelay(1);
 596         } while (--loops);
 597
 598         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 599
 600         return loops ? 0 : -ETIMEDOUT;
 601 }
 602
 603 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 604                                 const u8 *data, size_t length)
 605 {
 606         struct mwl8k_cmd_pkt *cmd;
 607         int done;
 608         int rc = 0;
 609
 610         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 611         if (cmd == NULL)
 612                 return -ENOMEM;
 613
 614         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 615         cmd->seq_num = 0;
 616         cmd->macid = 0;
 617         cmd->result = 0;
 618
 619         done = 0;
 620         while (length) {
 621                 int block_size = length > 256 ? 256 : length;
 622
 623                 memcpy(cmd->payload, data + done, block_size);
 624                 cmd->length = cpu_to_le16(block_size);
 625
 626                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 627                                                 sizeof(*cmd) + block_size);
 628                 if (rc)
 629                         break;
 630
 631                 done += block_size;
 632                 length -= block_size;
 633         }
 634
 635         if (!rc) {
 636                 cmd->length = 0;
 637                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 638         }
 639
 640         kfree(cmd);
 641
 642         return rc;
 643 }
 644
 645 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 646                                 const u8 *data, size_t length)
 647 {
 648         unsigned char *buffer;
 649         int may_continue, rc = 0;
 650         u32 done, prev_block_size;
 651
 652         buffer = kmalloc(1024, GFP_KERNEL);
 653         if (buffer == NULL)
 654                 return -ENOMEM;
 655
 656         done = 0;
 657         prev_block_size = 0;
 658         may_continue = 1000;
 659         while (may_continue > 0) {
 660                 u32 block_size;
 661
 662                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 663                 if (block_size & 1) {
 664                         block_size &= ~1;
 665                         may_continue--;
 666                 } else {
 667                         done += prev_block_size;
 668                         length -= prev_block_size;
 669                 }
 670
 671                 if (block_size > 1024 || block_size > length) {
 672                         rc = -EOVERFLOW;
 673                         break;
 674                 }
 675
 676                 if (length == 0) {
 677                         rc = 0;
 678                         break;
 679                 }
 680
 681                 if (block_size == 0) {
 682                         rc = -EPROTO;
 683                         may_continue--;
 684                         udelay(1);
 685                         continue;
 686                 }
 687
 688                 prev_block_size = block_size;
 689                 memcpy(buffer, data + done, block_size);
 690
 691                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 692                 if (rc)
 693                         break;
 694         }
 695
 696         if (!rc && length != 0)
 697                 rc = -EREMOTEIO;
 698
 699         kfree(buffer);
 700
 701         return rc;
 702 }
 703
 704 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 705 {
 706         struct mwl8k_priv *priv = hw->priv;
 707         const struct firmware *fw = priv->fw_ucode;
 708         int rc;
 709         int loops;
 710
 711         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 712                 const struct firmware *helper = priv->fw_helper;
 713
 714                 if (helper == NULL) {
 715                         printk(KERN_ERR "%s: helper image needed but none "
 716                                "given\n", pci_name(priv->pdev));
 717                         return -EINVAL;
 718                 }
 719
 720                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 721                 if (rc) {
 722                         printk(KERN_ERR "%s: unable to load firmware "
 723                                "helper image\n", pci_name(priv->pdev));
 724                         return rc;
 725                 }
 726                 msleep(20);
 727
 728                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 729         } else {
 730                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 731         }
 732
 733         if (rc) {
 734                 printk(KERN_ERR "%s: unable to load firmware image\n",
 735                        pci_name(priv->pdev));
 736                 return rc;
 737         }
 738
 739         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 740
 741         loops = 500000;
 742         do {
 743                 u32 ready_code;
 744
 745                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 746                 if (ready_code == MWL8K_FWAP_READY) {
 747                         priv->ap_fw = true;
 748                         break;
 749                 } else if (ready_code == MWL8K_FWSTA_READY) {
 750                         priv->ap_fw = false;
 751                         break;
 752                 }
 753
 754                 cond_resched();
 755                 udelay(1);
 756         } while (--loops);
 757
 758         return loops ? 0 : -ETIMEDOUT;
 759 }
 760
 761
 762 /* DMA header used by firmware and hardware.  */
 763 struct mwl8k_dma_data {
 764         __le16 fwlen;
 765         struct ieee80211_hdr wh;
 766         char data[0];
 767 } __packed;
 768
 769 /* Routines to add/remove DMA header from skb.  */
 770 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 771 {
 772         struct mwl8k_dma_data *tr;
 773         int hdrlen;
 774
 775         tr = (struct mwl8k_dma_data *)skb->data;
 776         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 777
 778         if (hdrlen != sizeof(tr->wh)) {
 779                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 780                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 781                         *((__le16 *)(tr->data - 2)) = qos;
 782                 } else {
 783                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 784                 }
 785         }
 786
 787         if (hdrlen != sizeof(*tr))
 788                 skb_pull(skb, sizeof(*tr) - hdrlen);
 789 }
 790
 791 #define REDUCED_TX_HEADROOM     8
 792
 793 static void
 794 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 795                                                 int head_pad, int tail_pad)
 796 {
 797         struct ieee80211_hdr *wh;
 798         int hdrlen;
 799         int reqd_hdrlen;
 800         struct mwl8k_dma_data *tr;
 801
 802         /*
 803          * Add a firmware DMA header; the firmware requires that we
 804          * present a 2-byte payload length followed by a 4-address
 805          * header (without QoS field), followed (optionally) by any
 806          * WEP/ExtIV header (but only filled in for CCMP).
 807          */
 808         wh = (struct ieee80211_hdr *)skb->data;
 809
 810         hdrlen = ieee80211_hdrlen(wh->frame_control);
 811
 812         /*
 813          * Check if skb_resize is required because of
 814          * tx_headroom adjustment.
 815          */
 816         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 817                                                 + REDUCED_TX_HEADROOM))) {
 818                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 819
 820                         wiphy_err(priv->hw->wiphy,
 821                                         "Failed to reallocate TX buffer\n");
 822                         return;
 823                 }
 824                 skb->truesize += REDUCED_TX_HEADROOM;
 825         }
 826
 827         reqd_hdrlen = sizeof(*tr) + head_pad;
 828
 829         if (hdrlen != reqd_hdrlen)
 830                 skb_push(skb, reqd_hdrlen - hdrlen);
 831
 832         if (ieee80211_is_data_qos(wh->frame_control))
 833                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 834
 835         tr = (struct mwl8k_dma_data *)skb->data;
 836         if (wh != &tr->wh)
 837                 memmove(&tr->wh, wh, hdrlen);
 838         if (hdrlen != sizeof(tr->wh))
 839                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 840
 841         /*
 842          * Firmware length is the length of the fully formed "802.11
 843          * payload".  That is, everything except for the 802.11 header.
 844          * This includes all crypto material including the MIC.
 845          */
 846         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 847 }
 848
 849 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 850                 struct sk_buff *skb)
 851 {
 852         struct ieee80211_hdr *wh;
 853         struct ieee80211_tx_info *tx_info;
 854         struct ieee80211_key_conf *key_conf;
 855         int data_pad;
 856         int head_pad = 0;
 857
 858         wh = (struct ieee80211_hdr *)skb->data;
 859
 860         tx_info = IEEE80211_SKB_CB(skb);
 861
 862         key_conf = NULL;
 863         if (ieee80211_is_data(wh->frame_control))
 864                 key_conf = tx_info->control.hw_key;
 865
 866         /*
 867          * Make sure the packet header is in the DMA header format (4-address
 868          * without QoS), and add head & tail padding when HW crypto is enabled.
 869          *
 870          * We have the following trailer padding requirements:
 871          * - WEP: 4 trailer bytes (ICV)
 872          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 873          * - CCMP: 8 trailer bytes (MIC)
 874          */
 875         data_pad = 0;
 876         if (key_conf != NULL) {
 877                 head_pad = key_conf->iv_len;
 878                 switch (key_conf->cipher) {
 879                 case WLAN_CIPHER_SUITE_WEP40:
 880                 case WLAN_CIPHER_SUITE_WEP104:
 881                         data_pad = 4;
 882                         break;
 883                 case WLAN_CIPHER_SUITE_TKIP:
 884                         data_pad = 12;
 885                         break;
 886                 case WLAN_CIPHER_SUITE_CCMP:
 887                         data_pad = 8;
 888                         break;
 889                 }
 890         }
 891         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 892 }
 893
 894 /*
 895  * Packet reception for 88w8366 AP firmware.
 896  */
 897 struct mwl8k_rxd_8366_ap {
 898         __le16 pkt_len;
 899         __u8 sq2;
 900         __u8 rate;
 901         __le32 pkt_phys_addr;
 902         __le32 next_rxd_phys_addr;
 903         __le16 qos_control;
 904         __le16 htsig2;
 905         __le32 hw_rssi_info;
 906         __le32 hw_noise_floor_info;
 907         __u8 noise_floor;
 908         __u8 pad0[3];
 909         __u8 rssi;
 910         __u8 rx_status;
 911         __u8 channel;
 912         __u8 rx_ctrl;
 913 } __packed;
 914
 915 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 916 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 917 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 918
 919 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 920
 921 /* 8366 AP rx_status bits */
 922 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 923 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 924 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 925 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 926 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 927
 928 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 929 {
 930         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 931
 932         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 933         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 934 }
 935
 936 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 937 {
 938         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 939
 940         rxd->pkt_len = cpu_to_le16(len);
 941         rxd->pkt_phys_addr = cpu_to_le32(addr);
 942         wmb();
 943         rxd->rx_ctrl = 0;
 944 }
 945
 946 static int
 947 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 948                           __le16 *qos, s8 *noise)
 949 {
 950         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 951
 952         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 953                 return -1;
 954         rmb();
 955
 956         memset(status, 0, sizeof(*status));
 957
 958         status->signal = -rxd->rssi;
 959         *noise = -rxd->noise_floor;
 960
 961         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 962                 status->flag |= RX_FLAG_HT;
 963                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 964                         status->flag |= RX_FLAG_40MHZ;
 965                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 966         } else {
 967                 int i;
 968
 969                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 970                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 971                                 status->rate_idx = i;
 972                                 break;
 973                         }
 974                 }
 975         }
 976
 977         if (rxd->channel > 14) {
 978                 status->band = IEEE80211_BAND_5GHZ;
 979                 if (!(status->flag & RX_FLAG_HT))
 980                         status->rate_idx -= 5;
 981         } else {
 982                 status->band = IEEE80211_BAND_2GHZ;
 983         }
 984         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 985                                                       status->band);
 986
 987         *qos = rxd->qos_control;
 988
 989         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 990             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 991             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 992                 status->flag |= RX_FLAG_MMIC_ERROR;
 993
 994         return le16_to_cpu(rxd->pkt_len);
 995 }
 996
 997 static struct rxd_ops rxd_8366_ap_ops = {
 998         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 999         .rxd_init       = mwl8k_rxd_8366_ap_init,
1000         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1001         .rxd_process    = mwl8k_rxd_8366_ap_process,
1002 };
1003
1004 /*
1005  * Packet reception for STA firmware.
1006  */
1007 struct mwl8k_rxd_sta {
1008         __le16 pkt_len;
1009         __u8 link_quality;
1010         __u8 noise_level;
1011         __le32 pkt_phys_addr;
1012         __le32 next_rxd_phys_addr;
1013         __le16 qos_control;
1014         __le16 rate_info;
1015         __le32 pad0[4];
1016         __u8 rssi;
1017         __u8 channel;
1018         __le16 pad1;
1019         __u8 rx_ctrl;
1020         __u8 rx_status;
1021         __u8 pad2[2];
1022 } __packed;
1023
1024 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1025 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1026 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1027 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1028 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1029 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1030
1031 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1032 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1033 /* ICV=0 or MIC=1 */
1034 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1035 /* Key is uploaded only in failure case */
1036 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1037
1038 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1039 {
1040         struct mwl8k_rxd_sta *rxd = _rxd;
1041
1042         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1043         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1044 }
1045
1046 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1047 {
1048         struct mwl8k_rxd_sta *rxd = _rxd;
1049
1050         rxd->pkt_len = cpu_to_le16(len);
1051         rxd->pkt_phys_addr = cpu_to_le32(addr);
1052         wmb();
1053         rxd->rx_ctrl = 0;
1054 }
1055
1056 static int
1057 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1058                        __le16 *qos, s8 *noise)
1059 {
1060         struct mwl8k_rxd_sta *rxd = _rxd;
1061         u16 rate_info;
1062
1063         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1064                 return -1;
1065         rmb();
1066
1067         rate_info = le16_to_cpu(rxd->rate_info);
1068
1069         memset(status, 0, sizeof(*status));
1070
1071         status->signal = -rxd->rssi;
1072         *noise = -rxd->noise_level;
1073         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1074         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1075
1076         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1077                 status->flag |= RX_FLAG_SHORTPRE;
1078         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1079                 status->flag |= RX_FLAG_40MHZ;
1080         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1081                 status->flag |= RX_FLAG_SHORT_GI;
1082         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1083                 status->flag |= RX_FLAG_HT;
1084
1085         if (rxd->channel > 14) {
1086                 status->band = IEEE80211_BAND_5GHZ;
1087                 if (!(status->flag & RX_FLAG_HT))
1088                         status->rate_idx -= 5;
1089         } else {
1090                 status->band = IEEE80211_BAND_2GHZ;
1091         }
1092         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1093                                                       status->band);
1094
1095         *qos = rxd->qos_control;
1096         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1097             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1098                 status->flag |= RX_FLAG_MMIC_ERROR;
1099
1100         return le16_to_cpu(rxd->pkt_len);
1101 }
1102
1103 static struct rxd_ops rxd_sta_ops = {
1104         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1105         .rxd_init       = mwl8k_rxd_sta_init,
1106         .rxd_refill     = mwl8k_rxd_sta_refill,
1107         .rxd_process    = mwl8k_rxd_sta_process,
1108 };
1109
1110
1111 #define MWL8K_RX_DESCS          256
1112 #define MWL8K_RX_MAXSZ          3800
1113
1114 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1115 {
1116         struct mwl8k_priv *priv = hw->priv;
1117         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1118         int size;
1119         int i;
1120
1121         rxq->rxd_count = 0;
1122         rxq->head = 0;
1123         rxq->tail = 0;
1124
1125         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1126
1127         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1128         if (rxq->rxd == NULL) {
1129                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1130                 return -ENOMEM;
1131         }
1132         memset(rxq->rxd, 0, size);
1133
1134         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1135         if (rxq->buf == NULL) {
1136                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1137                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1138                 return -ENOMEM;
1139         }
1140
1141         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1142                 int desc_size;
1143                 void *rxd;
1144                 int nexti;
1145                 dma_addr_t next_dma_addr;
1146
1147                 desc_size = priv->rxd_ops->rxd_size;
1148                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1149
1150                 nexti = i + 1;
1151                 if (nexti == MWL8K_RX_DESCS)
1152                         nexti = 0;
1153                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1154
1155                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1156         }
1157
1158         return 0;
1159 }
1160
1161 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1162 {
1163         struct mwl8k_priv *priv = hw->priv;
1164         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1165         int refilled;
1166
1167         refilled = 0;
1168         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1169                 struct sk_buff *skb;
1170                 dma_addr_t addr;
1171                 int rx;
1172                 void *rxd;
1173
1174                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1175                 if (skb == NULL)
1176                         break;
1177
1178                 addr = pci_map_single(priv->pdev, skb->data,
1179                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1180
1181                 rxq->rxd_count++;
1182                 rx = rxq->tail++;
1183                 if (rxq->tail == MWL8K_RX_DESCS)
1184                         rxq->tail = 0;
1185                 rxq->buf[rx].skb = skb;
1186                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1187
1188                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1189                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1190
1191                 refilled++;
1192         }
1193
1194         return refilled;
1195 }
1196
1197 /* Must be called only when the card's reception is completely halted */
1198 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1199 {
1200         struct mwl8k_priv *priv = hw->priv;
1201         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202         int i;
1203
1204         if (rxq->rxd == NULL)
1205                 return;
1206
1207         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1208                 if (rxq->buf[i].skb != NULL) {
1209                         pci_unmap_single(priv->pdev,
1210                                          dma_unmap_addr(&rxq->buf[i], dma),
1211                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1212                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1213
1214                         kfree_skb(rxq->buf[i].skb);
1215                         rxq->buf[i].skb = NULL;
1216                 }
1217         }
1218
1219         kfree(rxq->buf);
1220         rxq->buf = NULL;
1221
1222         pci_free_consistent(priv->pdev,
1223                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1224                             rxq->rxd, rxq->rxd_dma);
1225         rxq->rxd = NULL;
1226 }
1227
1228
1229 /*
1230  * Scan a list of BSSIDs to process for finalize join.
1231  * Allows for extension to process multiple BSSIDs.
1232  */
1233 static inline int
1234 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1235 {
1236         return priv->capture_beacon &&
1237                 ieee80211_is_beacon(wh->frame_control) &&
1238                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1239 }
1240
1241 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1242                                      struct sk_buff *skb)
1243 {
1244         struct mwl8k_priv *priv = hw->priv;
1245
1246         priv->capture_beacon = false;
1247         memset(priv->capture_bssid, 0, ETH_ALEN);
1248
1249         /*
1250          * Use GFP_ATOMIC as rxq_process is called from
1251          * the primary interrupt handler, memory allocation call
1252          * must not sleep.
1253          */
1254         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1255         if (priv->beacon_skb != NULL)
1256                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1257 }
1258
1259 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1260                                                    u8 *bssid)
1261 {
1262         struct mwl8k_vif *mwl8k_vif;
1263
1264         list_for_each_entry(mwl8k_vif,
1265                             vif_list, list) {
1266                 if (memcmp(bssid, mwl8k_vif->bssid,
1267                            ETH_ALEN) == 0)
1268                         return mwl8k_vif;
1269         }
1270
1271         return NULL;
1272 }
1273
1274 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1275 {
1276         struct mwl8k_priv *priv = hw->priv;
1277         struct mwl8k_vif *mwl8k_vif = NULL;
1278         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1279         int processed;
1280
1281         processed = 0;
1282         while (rxq->rxd_count && limit--) {
1283                 struct sk_buff *skb;
1284                 void *rxd;
1285                 int pkt_len;
1286                 struct ieee80211_rx_status status;
1287                 struct ieee80211_hdr *wh;
1288                 __le16 qos;
1289
1290                 skb = rxq->buf[rxq->head].skb;
1291                 if (skb == NULL)
1292                         break;
1293
1294                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1295
1296                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1297                                                         &priv->noise);
1298                 if (pkt_len < 0)
1299                         break;
1300
1301                 rxq->buf[rxq->head].skb = NULL;
1302
1303                 pci_unmap_single(priv->pdev,
1304                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1305                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1306                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1307
1308                 rxq->head++;
1309                 if (rxq->head == MWL8K_RX_DESCS)
1310                         rxq->head = 0;
1311
1312                 rxq->rxd_count--;
1313
1314                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1315
1316                 /*
1317                  * Check for a pending join operation.  Save a
1318                  * copy of the beacon and schedule a tasklet to
1319                  * send a FINALIZE_JOIN command to the firmware.
1320                  */
1321                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1322                         mwl8k_save_beacon(hw, skb);
1323
1324                 if (ieee80211_has_protected(wh->frame_control)) {
1325
1326                         /* Check if hw crypto has been enabled for
1327                          * this bss. If yes, set the status flags
1328                          * accordingly
1329                          */
1330                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1331                                                                 wh->addr1);
1332
1333                         if (mwl8k_vif != NULL &&
1334                             mwl8k_vif->is_hw_crypto_enabled) {
1335                                 /*
1336                                  * When MMIC ERROR is encountered
1337                                  * by the firmware, payload is
1338                                  * dropped and only 32 bytes of
1339                                  * mwl8k Firmware header is sent
1340                                  * to the host.
1341                                  *
1342                                  * We need to add four bytes of
1343                                  * key information.  In it
1344                                  * MAC80211 expects keyidx set to
1345                                  * 0 for triggering Counter
1346                                  * Measure of MMIC failure.
1347                                  */
1348                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1349                                         struct mwl8k_dma_data *tr;
1350                                         tr = (struct mwl8k_dma_data *)skb->data;
1351                                         memset((void *)&(tr->data), 0, 4);
1352                                         pkt_len += 4;
1353                                 }
1354
1355                                 if (!ieee80211_is_auth(wh->frame_control))
1356                                         status.flag |= RX_FLAG_IV_STRIPPED |
1357                                                        RX_FLAG_DECRYPTED |
1358                                                        RX_FLAG_MMIC_STRIPPED;
1359                         }
1360                 }
1361
1362                 skb_put(skb, pkt_len);
1363                 mwl8k_remove_dma_header(skb, qos);
1364                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1365                 ieee80211_rx_irqsafe(hw, skb);
1366
1367                 processed++;
1368         }
1369
1370         return processed;
1371 }
1372
1373
1374 /*
1375  * Packet transmission.
1376  */
1377
1378 #define MWL8K_TXD_STATUS_OK                     0x00000001
1379 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1380 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1381 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1382 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1383
1384 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1385 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1386 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1387 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1388 #define MWL8K_QOS_EOSP                          0x0010
1389
1390 struct mwl8k_tx_desc {
1391         __le32 status;
1392         __u8 data_rate;
1393         __u8 tx_priority;
1394         __le16 qos_control;
1395         __le32 pkt_phys_addr;
1396         __le16 pkt_len;
1397         __u8 dest_MAC_addr[ETH_ALEN];
1398         __le32 next_txd_phys_addr;
1399         __le32 timestamp;
1400         __le16 rate_info;
1401         __u8 peer_id;
1402         __u8 tx_frag_cnt;
1403 } __packed;
1404
1405 #define MWL8K_TX_DESCS          128
1406
1407 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1408 {
1409         struct mwl8k_priv *priv = hw->priv;
1410         struct mwl8k_tx_queue *txq = priv->txq + index;
1411         int size;
1412         int i;
1413
1414         txq->len = 0;
1415         txq->head = 0;
1416         txq->tail = 0;
1417
1418         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1419
1420         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1421         if (txq->txd == NULL) {
1422                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1423                 return -ENOMEM;
1424         }
1425         memset(txq->txd, 0, size);
1426
1427         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1428         if (txq->skb == NULL) {
1429                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1430                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1431                 return -ENOMEM;
1432         }
1433
1434         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1435                 struct mwl8k_tx_desc *tx_desc;
1436                 int nexti;
1437
1438                 tx_desc = txq->txd + i;
1439                 nexti = (i + 1) % MWL8K_TX_DESCS;
1440
1441                 tx_desc->status = 0;
1442                 tx_desc->next_txd_phys_addr =
1443                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1444         }
1445
1446         return 0;
1447 }
1448
1449 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1450 {
1451         iowrite32(MWL8K_H2A_INT_PPA_READY,
1452                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1453         iowrite32(MWL8K_H2A_INT_DUMMY,
1454                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1455         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1456 }
1457
1458 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1459 {
1460         struct mwl8k_priv *priv = hw->priv;
1461         int i;
1462
1463         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1464                 struct mwl8k_tx_queue *txq = priv->txq + i;
1465                 int fw_owned = 0;
1466                 int drv_owned = 0;
1467                 int unused = 0;
1468                 int desc;
1469
1470                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1471                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1472                         u32 status;
1473
1474                         status = le32_to_cpu(tx_desc->status);
1475                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1476                                 fw_owned++;
1477                         else
1478                                 drv_owned++;
1479
1480                         if (tx_desc->pkt_len == 0)
1481                                 unused++;
1482                 }
1483
1484                 wiphy_err(hw->wiphy,
1485                           "txq[%d] len=%d head=%d tail=%d "
1486                           "fw_owned=%d drv_owned=%d unused=%d\n",
1487                           i,
1488                           txq->len, txq->head, txq->tail,
1489                           fw_owned, drv_owned, unused);
1490         }
1491 }
1492
1493 /*
1494  * Must be called with priv->fw_mutex held and tx queues stopped.
1495  */
1496 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1497
1498 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1499 {
1500         struct mwl8k_priv *priv = hw->priv;
1501         DECLARE_COMPLETION_ONSTACK(tx_wait);
1502         int retry;
1503         int rc;
1504
1505         might_sleep();
1506
1507         /* Since fw restart is in progress, allow only the firmware
1508          * commands from the restart code and block the other
1509          * commands since they are going to fail in any case since
1510          * the firmware has crashed
1511          */
1512         if (priv->hw_restart_in_progress) {
1513                 if (priv->hw_restart_owner == current)
1514                         return 0;
1515                 else
1516                         return -EBUSY;
1517         }
1518
1519         /*
1520          * The TX queues are stopped at this point, so this test
1521          * doesn't need to take ->tx_lock.
1522          */
1523         if (!priv->pending_tx_pkts)
1524                 return 0;
1525
1526         retry = 0;
1527         rc = 0;
1528
1529         spin_lock_bh(&priv->tx_lock);
1530         priv->tx_wait = &tx_wait;
1531         while (!rc) {
1532                 int oldcount;
1533                 unsigned long timeout;
1534
1535                 oldcount = priv->pending_tx_pkts;
1536
1537                 spin_unlock_bh(&priv->tx_lock);
1538                 timeout = wait_for_completion_timeout(&tx_wait,
1539                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1540                 spin_lock_bh(&priv->tx_lock);
1541
1542                 if (timeout) {
1543                         WARN_ON(priv->pending_tx_pkts);
1544                         if (retry)
1545                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1546                         break;
1547                 }
1548
1549                 if (priv->pending_tx_pkts < oldcount) {
1550                         wiphy_notice(hw->wiphy,
1551                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1552                                      oldcount, priv->pending_tx_pkts);
1553                         retry = 1;
1554                         continue;
1555                 }
1556
1557                 priv->tx_wait = NULL;
1558
1559                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1560                           MWL8K_TX_WAIT_TIMEOUT_MS);
1561                 mwl8k_dump_tx_rings(hw);
1562                 priv->hw_restart_in_progress = true;
1563                 ieee80211_queue_work(hw, &priv->fw_reload);
1564
1565                 rc = -ETIMEDOUT;
1566         }
1567         spin_unlock_bh(&priv->tx_lock);
1568
1569         return rc;
1570 }
1571
1572 #define MWL8K_TXD_SUCCESS(status)                               \
1573         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1574                      MWL8K_TXD_STATUS_OK_RETRY |                \
1575                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1576
1577 static int mwl8k_tid_queue_mapping(u8 tid)
1578 {
1579         BUG_ON(tid > 7);
1580
1581         switch (tid) {
1582         case 0:
1583         case 3:
1584                 return IEEE80211_AC_BE;
1585                 break;
1586         case 1:
1587         case 2:
1588                 return IEEE80211_AC_BK;
1589                 break;
1590         case 4:
1591         case 5:
1592                 return IEEE80211_AC_VI;
1593                 break;
1594         case 6:
1595         case 7:
1596                 return IEEE80211_AC_VO;
1597                 break;
1598         default:
1599                 return -1;
1600                 break;
1601         }
1602 }
1603
1604 /* The firmware will fill in the rate information
1605  * for each packet that gets queued in the hardware
1606  * and these macros will interpret that info.
1607  */
1608
1609 #define RI_FORMAT(a)              (a & 0x0001)
1610 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1611
1612 static int
1613 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1614 {
1615         struct mwl8k_priv *priv = hw->priv;
1616         struct mwl8k_tx_queue *txq = priv->txq + index;
1617         int processed;
1618
1619         processed = 0;
1620         while (txq->len > 0 && limit--) {
1621                 int tx;
1622                 struct mwl8k_tx_desc *tx_desc;
1623                 unsigned long addr;
1624                 int size;
1625                 struct sk_buff *skb;
1626                 struct ieee80211_tx_info *info;
1627                 u32 status;
1628                 struct ieee80211_sta *sta;
1629                 struct mwl8k_sta *sta_info = NULL;
1630                 u16 rate_info;
1631                 struct ieee80211_hdr *wh;
1632
1633                 tx = txq->head;
1634                 tx_desc = txq->txd + tx;
1635
1636                 status = le32_to_cpu(tx_desc->status);
1637
1638                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1639                         if (!force)
1640                                 break;
1641                         tx_desc->status &=
1642                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1643                 }
1644
1645                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1646                 BUG_ON(txq->len == 0);
1647                 txq->len--;
1648                 priv->pending_tx_pkts--;
1649
1650                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1651                 size = le16_to_cpu(tx_desc->pkt_len);
1652                 skb = txq->skb[tx];
1653                 txq->skb[tx] = NULL;
1654
1655                 BUG_ON(skb == NULL);
1656                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1657
1658                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1659
1660                 wh = (struct ieee80211_hdr *) skb->data;
1661
1662                 /* Mark descriptor as unused */
1663                 tx_desc->pkt_phys_addr = 0;
1664                 tx_desc->pkt_len = 0;
1665
1666                 info = IEEE80211_SKB_CB(skb);
1667                 if (ieee80211_is_data(wh->frame_control)) {
1668                         sta = info->control.sta;
1669                         if (sta) {
1670                                 sta_info = MWL8K_STA(sta);
1671                                 BUG_ON(sta_info == NULL);
1672                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1673                                 /* If rate is < 6.5 Mpbs for an ht station
1674                                  * do not form an ampdu. If the station is a
1675                                  * legacy station (format = 0), do not form an
1676                                  * ampdu
1677                                  */
1678                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1679                                     RI_FORMAT(rate_info) == 0) {
1680                                         sta_info->is_ampdu_allowed = false;
1681                                 } else {
1682                                         sta_info->is_ampdu_allowed = true;
1683                                 }
1684                         }
1685                 }
1686
1687                 ieee80211_tx_info_clear_status(info);
1688
1689                 /* Rate control is happening in the firmware.
1690                  * Ensure no tx rate is being reported.
1691                  */
1692                 info->status.rates[0].idx = -1;
1693                 info->status.rates[0].count = 1;
1694
1695                 if (MWL8K_TXD_SUCCESS(status))
1696                         info->flags |= IEEE80211_TX_STAT_ACK;
1697
1698                 ieee80211_tx_status_irqsafe(hw, skb);
1699
1700                 processed++;
1701         }
1702
1703         return processed;
1704 }
1705
1706 /* must be called only when the card's transmit is completely halted */
1707 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1708 {
1709         struct mwl8k_priv *priv = hw->priv;
1710         struct mwl8k_tx_queue *txq = priv->txq + index;
1711
1712         if (txq->txd == NULL)
1713                 return;
1714
1715         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1716
1717         kfree(txq->skb);
1718         txq->skb = NULL;
1719
1720         pci_free_consistent(priv->pdev,
1721                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1722                             txq->txd, txq->txd_dma);
1723         txq->txd = NULL;
1724 }
1725
1726 /* caller must hold priv->stream_lock when calling the stream functions */
1727 static struct mwl8k_ampdu_stream *
1728 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1729 {
1730         struct mwl8k_ampdu_stream *stream;
1731         struct mwl8k_priv *priv = hw->priv;
1732         int i;
1733
1734         for (i = 0; i < priv->num_ampdu_queues; i++) {
1735                 stream = &priv->ampdu[i];
1736                 if (stream->state == AMPDU_NO_STREAM) {
1737                         stream->sta = sta;
1738                         stream->state = AMPDU_STREAM_NEW;
1739                         stream->tid = tid;
1740                         stream->idx = i;
1741                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1742                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1743                                     sta->addr, tid);
1744                         return stream;
1745                 }
1746         }
1747         return NULL;
1748 }
1749
1750 static int
1751 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1752 {
1753         int ret;
1754
1755         /* if the stream has already been started, don't start it again */
1756         if (stream->state != AMPDU_STREAM_NEW)
1757                 return 0;
1758         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1759         if (ret)
1760                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1761                             "%d\n", stream->sta->addr, stream->tid, ret);
1762         else
1763                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1764                             stream->sta->addr, stream->tid);
1765         return ret;
1766 }
1767
1768 static void
1769 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1770 {
1771         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1772                     stream->tid);
1773         memset(stream, 0, sizeof(*stream));
1774 }
1775
1776 static struct mwl8k_ampdu_stream *
1777 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1778 {
1779         struct mwl8k_priv *priv = hw->priv;
1780         int i;
1781
1782         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1783                 struct mwl8k_ampdu_stream *stream;
1784                 stream = &priv->ampdu[i];
1785                 if (stream->state == AMPDU_NO_STREAM)
1786                         continue;
1787                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1788                     stream->tid == tid)
1789                         return stream;
1790         }
1791         return NULL;
1792 }
1793
1794 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1795 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1796 {
1797         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1798         struct tx_traffic_info *tx_stats;
1799
1800         BUG_ON(tid >= MWL8K_MAX_TID);
1801         tx_stats = &sta_info->tx_stats[tid];
1802
1803         return sta_info->is_ampdu_allowed &&
1804                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1805 }
1806
1807 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1808 {
1809         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1810         struct tx_traffic_info *tx_stats;
1811
1812         BUG_ON(tid >= MWL8K_MAX_TID);
1813         tx_stats = &sta_info->tx_stats[tid];
1814
1815         if (tx_stats->start_time == 0)
1816                 tx_stats->start_time = jiffies;
1817
1818         /* reset the packet count after each second elapses.  If the number of
1819          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1820          * an ampdu stream to be started.
1821          */
1822         if (jiffies - tx_stats->start_time > HZ) {
1823                 tx_stats->pkts = 0;
1824                 tx_stats->start_time = 0;
1825         } else
1826                 tx_stats->pkts++;
1827 }
1828
1829 static void
1830 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1831 {
1832         struct mwl8k_priv *priv = hw->priv;
1833         struct ieee80211_tx_info *tx_info;
1834         struct mwl8k_vif *mwl8k_vif;
1835         struct ieee80211_sta *sta;
1836         struct ieee80211_hdr *wh;
1837         struct mwl8k_tx_queue *txq;
1838         struct mwl8k_tx_desc *tx;
1839         dma_addr_t dma;
1840         u32 txstatus;
1841         u8 txdatarate;
1842         u16 qos;
1843         int txpriority;
1844         u8 tid = 0;
1845         struct mwl8k_ampdu_stream *stream = NULL;
1846         bool start_ba_session = false;
1847         bool mgmtframe = false;
1848         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1849
1850         wh = (struct ieee80211_hdr *)skb->data;
1851         if (ieee80211_is_data_qos(wh->frame_control))
1852                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1853         else
1854                 qos = 0;
1855
1856         if (ieee80211_is_mgmt(wh->frame_control))
1857                 mgmtframe = true;
1858
1859         if (priv->ap_fw)
1860                 mwl8k_encapsulate_tx_frame(priv, skb);
1861         else
1862                 mwl8k_add_dma_header(priv, skb, 0, 0);
1863
1864         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1865
1866         tx_info = IEEE80211_SKB_CB(skb);
1867         sta = tx_info->control.sta;
1868         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1869
1870         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1871                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1872                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1873                 mwl8k_vif->seqno += 0x10;
1874         }
1875
1876         /* Setup firmware control bit fields for each frame type.  */
1877         txstatus = 0;
1878         txdatarate = 0;
1879         if (ieee80211_is_mgmt(wh->frame_control) ||
1880             ieee80211_is_ctl(wh->frame_control)) {
1881                 txdatarate = 0;
1882                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1883         } else if (ieee80211_is_data(wh->frame_control)) {
1884                 txdatarate = 1;
1885                 if (is_multicast_ether_addr(wh->addr1))
1886                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1887
1888                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1889                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1890                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1891                 else
1892                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1893         }
1894
1895         /* Queue ADDBA request in the respective data queue.  While setting up
1896          * the ampdu stream, mac80211 queues further packets for that
1897          * particular ra/tid pair.  However, packets piled up in the hardware
1898          * for that ra/tid pair will still go out. ADDBA request and the
1899          * related data packets going out from different queues asynchronously
1900          * will cause a shift in the receiver window which might result in
1901          * ampdu packets getting dropped at the receiver after the stream has
1902          * been setup.
1903          */
1904         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1905             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1906             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1907             priv->ap_fw)) {
1908                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1909                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1910                 index = mwl8k_tid_queue_mapping(tid);
1911         }
1912
1913         txpriority = index;
1914
1915         if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1916                         && skb->protocol != cpu_to_be16(ETH_P_PAE)
1917                         && ieee80211_is_data_qos(wh->frame_control)) {
1918                 tid = qos & 0xf;
1919                 mwl8k_tx_count_packet(sta, tid);
1920                 spin_lock(&priv->stream_lock);
1921                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1922                 if (stream != NULL) {
1923                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1924                                 txpriority = stream->txq_idx;
1925                                 index = stream->txq_idx;
1926                         } else if (stream->state == AMPDU_STREAM_NEW) {
1927                                 /* We get here if the driver sends us packets
1928                                  * after we've initiated a stream, but before
1929                                  * our ampdu_action routine has been called
1930                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1931                                  * for the ADDBA request.  So this packet can
1932                                  * go out with no risk of sequence number
1933                                  * mismatch.  No special handling is required.
1934                                  */
1935                         } else {
1936                                 /* Drop packets that would go out after the
1937                                  * ADDBA request was sent but before the ADDBA
1938                                  * response is received.  If we don't do this,
1939                                  * the recipient would probably receive it
1940                                  * after the ADDBA request with SSN 0.  This
1941                                  * will cause the recipient's BA receive window
1942                                  * to shift, which would cause the subsequent
1943                                  * packets in the BA stream to be discarded.
1944                                  * mac80211 queues our packets for us in this
1945                                  * case, so this is really just a safety check.
1946                                  */
1947                                 wiphy_warn(hw->wiphy,
1948                                            "Cannot send packet while ADDBA "
1949                                            "dialog is underway.\n");
1950                                 spin_unlock(&priv->stream_lock);
1951                                 dev_kfree_skb(skb);
1952                                 return;
1953                         }
1954                 } else {
1955                         /* Defer calling mwl8k_start_stream so that the current
1956                          * skb can go out before the ADDBA request.  This
1957                          * prevents sequence number mismatch at the recepient
1958                          * as described above.
1959                          */
1960                         if (mwl8k_ampdu_allowed(sta, tid)) {
1961                                 stream = mwl8k_add_stream(hw, sta, tid);
1962                                 if (stream != NULL)
1963                                         start_ba_session = true;
1964                         }
1965                 }
1966                 spin_unlock(&priv->stream_lock);
1967         }
1968
1969         dma = pci_map_single(priv->pdev, skb->data,
1970                                 skb->len, PCI_DMA_TODEVICE);
1971
1972         if (pci_dma_mapping_error(priv->pdev, dma)) {
1973                 wiphy_debug(hw->wiphy,
1974                             "failed to dma map skb, dropping TX frame.\n");
1975                 if (start_ba_session) {
1976                         spin_lock(&priv->stream_lock);
1977                         mwl8k_remove_stream(hw, stream);
1978                         spin_unlock(&priv->stream_lock);
1979                 }
1980                 dev_kfree_skb(skb);
1981                 return;
1982         }
1983
1984         spin_lock_bh(&priv->tx_lock);
1985
1986         txq = priv->txq + index;
1987
1988         /* Mgmt frames that go out frequently are probe
1989          * responses. Other mgmt frames got out relatively
1990          * infrequently. Hence reserve 2 buffers so that
1991          * other mgmt frames do not get dropped due to an
1992          * already queued probe response in one of the
1993          * reserved buffers.
1994          */
1995
1996         if (txq->len >= MWL8K_TX_DESCS - 2) {
1997                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
1998                         if (start_ba_session) {
1999                                 spin_lock(&priv->stream_lock);
2000                                 mwl8k_remove_stream(hw, stream);
2001                                 spin_unlock(&priv->stream_lock);
2002                         }
2003                         spin_unlock_bh(&priv->tx_lock);
2004                         dev_kfree_skb(skb);
2005                         return;
2006                 }
2007         }
2008
2009         BUG_ON(txq->skb[txq->tail] != NULL);
2010         txq->skb[txq->tail] = skb;
2011
2012         tx = txq->txd + txq->tail;
2013         tx->data_rate = txdatarate;
2014         tx->tx_priority = txpriority;
2015         tx->qos_control = cpu_to_le16(qos);
2016         tx->pkt_phys_addr = cpu_to_le32(dma);
2017         tx->pkt_len = cpu_to_le16(skb->len);
2018         tx->rate_info = 0;
2019         if (!priv->ap_fw && tx_info->control.sta != NULL)
2020                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2021         else
2022                 tx->peer_id = 0;
2023
2024         if (priv->ap_fw)
2025                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2026                                                 MWL8K_HW_TIMER_REGISTER));
2027
2028         wmb();
2029         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2030
2031         txq->len++;
2032         priv->pending_tx_pkts++;
2033
2034         txq->tail++;
2035         if (txq->tail == MWL8K_TX_DESCS)
2036                 txq->tail = 0;
2037
2038         mwl8k_tx_start(priv);
2039
2040         spin_unlock_bh(&priv->tx_lock);
2041
2042         /* Initiate the ampdu session here */
2043         if (start_ba_session) {
2044                 spin_lock(&priv->stream_lock);
2045                 if (mwl8k_start_stream(hw, stream))
2046                         mwl8k_remove_stream(hw, stream);
2047                 spin_unlock(&priv->stream_lock);
2048         }
2049 }
2050
2051
2052 /*
2053  * Firmware access.
2054  *
2055  * We have the following requirements for issuing firmware commands:
2056  * - Some commands require that the packet transmit path is idle when
2057  *   the command is issued.  (For simplicity, we'll just quiesce the
2058  *   transmit path for every command.)
2059  * - There are certain sequences of commands that need to be issued to
2060  *   the hardware sequentially, with no other intervening commands.
2061  *
2062  * This leads to an implementation of a "firmware lock" as a mutex that
2063  * can be taken recursively, and which is taken by both the low-level
2064  * command submission function (mwl8k_post_cmd) as well as any users of
2065  * that function that require issuing of an atomic sequence of commands,
2066  * and quiesces the transmit path whenever it's taken.
2067  */
2068 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2069 {
2070         struct mwl8k_priv *priv = hw->priv;
2071
2072         if (priv->fw_mutex_owner != current) {
2073                 int rc;
2074
2075                 mutex_lock(&priv->fw_mutex);
2076                 ieee80211_stop_queues(hw);
2077
2078                 rc = mwl8k_tx_wait_empty(hw);
2079                 if (rc) {
2080                         if (!priv->hw_restart_in_progress)
2081                                 ieee80211_wake_queues(hw);
2082
2083                         mutex_unlock(&priv->fw_mutex);
2084
2085                         return rc;
2086                 }
2087
2088                 priv->fw_mutex_owner = current;
2089         }
2090
2091         priv->fw_mutex_depth++;
2092
2093         return 0;
2094 }
2095
2096 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2097 {
2098         struct mwl8k_priv *priv = hw->priv;
2099
2100         if (!--priv->fw_mutex_depth) {
2101                 if (!priv->hw_restart_in_progress)
2102                         ieee80211_wake_queues(hw);
2103
2104                 priv->fw_mutex_owner = NULL;
2105                 mutex_unlock(&priv->fw_mutex);
2106         }
2107 }
2108
2109
2110 /*
2111  * Command processing.
2112  */
2113
2114 /* Timeout firmware commands after 10s */
2115 #define MWL8K_CMD_TIMEOUT_MS    10000
2116
2117 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2118 {
2119         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2120         struct mwl8k_priv *priv = hw->priv;
2121         void __iomem *regs = priv->regs;
2122         dma_addr_t dma_addr;
2123         unsigned int dma_size;
2124         int rc;
2125         unsigned long timeout = 0;
2126         u8 buf[32];
2127
2128         cmd->result = (__force __le16) 0xffff;
2129         dma_size = le16_to_cpu(cmd->length);
2130         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2131                                   PCI_DMA_BIDIRECTIONAL);
2132         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2133                 return -ENOMEM;
2134
2135         rc = mwl8k_fw_lock(hw);
2136         if (rc) {
2137                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2138                                                 PCI_DMA_BIDIRECTIONAL);
2139                 return rc;
2140         }
2141
2142         priv->hostcmd_wait = &cmd_wait;
2143         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2144         iowrite32(MWL8K_H2A_INT_DOORBELL,
2145                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2146         iowrite32(MWL8K_H2A_INT_DUMMY,
2147                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2148
2149         timeout = wait_for_completion_timeout(&cmd_wait,
2150                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2151
2152         priv->hostcmd_wait = NULL;
2153
2154         mwl8k_fw_unlock(hw);
2155
2156         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2157                                         PCI_DMA_BIDIRECTIONAL);
2158
2159         if (!timeout) {
2160                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2161                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2162                           MWL8K_CMD_TIMEOUT_MS);
2163                 rc = -ETIMEDOUT;
2164         } else {
2165                 int ms;
2166
2167                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2168
2169                 rc = cmd->result ? -EINVAL : 0;
2170                 if (rc)
2171                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2172                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2173                                   le16_to_cpu(cmd->result));
2174                 else if (ms > 2000)
2175                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2176                                      mwl8k_cmd_name(cmd->code,
2177                                                     buf, sizeof(buf)),
2178                                      ms);
2179         }
2180
2181         return rc;
2182 }
2183
2184 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2185                                  struct ieee80211_vif *vif,
2186                                  struct mwl8k_cmd_pkt *cmd)
2187 {
2188         if (vif != NULL)
2189                 cmd->macid = MWL8K_VIF(vif)->macid;
2190         return mwl8k_post_cmd(hw, cmd);
2191 }
2192
2193 /*
2194  * Setup code shared between STA and AP firmware images.
2195  */
2196 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2197 {
2198         struct mwl8k_priv *priv = hw->priv;
2199
2200         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2201         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2202
2203         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2204         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2205
2206         priv->band_24.band = IEEE80211_BAND_2GHZ;
2207         priv->band_24.channels = priv->channels_24;
2208         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2209         priv->band_24.bitrates = priv->rates_24;
2210         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2211
2212         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2213 }
2214
2215 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2216 {
2217         struct mwl8k_priv *priv = hw->priv;
2218
2219         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2220         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2221
2222         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2223         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2224
2225         priv->band_50.band = IEEE80211_BAND_5GHZ;
2226         priv->band_50.channels = priv->channels_50;
2227         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2228         priv->band_50.bitrates = priv->rates_50;
2229         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2230
2231         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2232 }
2233
2234 /*
2235  * CMD_GET_HW_SPEC (STA version).
2236  */
2237 struct mwl8k_cmd_get_hw_spec_sta {
2238         struct mwl8k_cmd_pkt header;
2239         __u8 hw_rev;
2240         __u8 host_interface;
2241         __le16 num_mcaddrs;
2242         __u8 perm_addr[ETH_ALEN];
2243         __le16 region_code;
2244         __le32 fw_rev;
2245         __le32 ps_cookie;
2246         __le32 caps;
2247         __u8 mcs_bitmap[16];
2248         __le32 rx_queue_ptr;
2249         __le32 num_tx_queues;
2250         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2251         __le32 caps2;
2252         __le32 num_tx_desc_per_queue;
2253         __le32 total_rxd;
2254 } __packed;
2255
2256 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2257 #define MWL8K_CAP_GREENFIELD            0x08000000
2258 #define MWL8K_CAP_AMPDU                 0x04000000
2259 #define MWL8K_CAP_RX_STBC               0x01000000
2260 #define MWL8K_CAP_TX_STBC               0x00800000
2261 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2262 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2263 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2264 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2265 #define MWL8K_CAP_DELAY_BA              0x00003000
2266 #define MWL8K_CAP_MIMO                  0x00000200
2267 #define MWL8K_CAP_40MHZ                 0x00000100
2268 #define MWL8K_CAP_BAND_MASK             0x00000007
2269 #define MWL8K_CAP_5GHZ                  0x00000004
2270 #define MWL8K_CAP_2GHZ4                 0x00000001
2271
2272 static void
2273 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2274                   struct ieee80211_supported_band *band, u32 cap)
2275 {
2276         int rx_streams;
2277         int tx_streams;
2278
2279         band->ht_cap.ht_supported = 1;
2280
2281         if (cap & MWL8K_CAP_MAX_AMSDU)
2282                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2283         if (cap & MWL8K_CAP_GREENFIELD)
2284                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2285         if (cap & MWL8K_CAP_AMPDU) {
2286                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2287                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2288                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2289         }
2290         if (cap & MWL8K_CAP_RX_STBC)
2291                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2292         if (cap & MWL8K_CAP_TX_STBC)
2293                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2294         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2295                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2296         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2297                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2298         if (cap & MWL8K_CAP_DELAY_BA)
2299                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2300         if (cap & MWL8K_CAP_40MHZ)
2301                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2302
2303         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2304         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2305
2306         band->ht_cap.mcs.rx_mask[0] = 0xff;
2307         if (rx_streams >= 2)
2308                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2309         if (rx_streams >= 3)
2310                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2311         band->ht_cap.mcs.rx_mask[4] = 0x01;
2312         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2313
2314         if (rx_streams != tx_streams) {
2315                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2316                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2317                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2318         }
2319 }
2320
2321 static void
2322 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2323 {
2324         struct mwl8k_priv *priv = hw->priv;
2325
2326         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2327                 mwl8k_setup_2ghz_band(hw);
2328                 if (caps & MWL8K_CAP_MIMO)
2329                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2330         }
2331
2332         if (caps & MWL8K_CAP_5GHZ) {
2333                 mwl8k_setup_5ghz_band(hw);
2334                 if (caps & MWL8K_CAP_MIMO)
2335                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2336         }
2337 }
2338
2339 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2340 {
2341         struct mwl8k_priv *priv = hw->priv;
2342         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2343         int rc;
2344         int i;
2345
2346         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2347         if (cmd == NULL)
2348                 return -ENOMEM;
2349
2350         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2351         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2352
2353         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2354         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2355         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2356         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2357         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2358                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2359         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2360         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2361
2362         rc = mwl8k_post_cmd(hw, &cmd->header);
2363
2364         if (!rc) {
2365                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2366                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2367                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2368                 priv->hw_rev = cmd->hw_rev;
2369                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2370                 priv->ap_macids_supported = 0x00000000;
2371                 priv->sta_macids_supported = 0x00000001;
2372         }
2373
2374         kfree(cmd);
2375         return rc;
2376 }
2377
2378 /*
2379  * CMD_GET_HW_SPEC (AP version).
2380  */
2381 struct mwl8k_cmd_get_hw_spec_ap {
2382         struct mwl8k_cmd_pkt header;
2383         __u8 hw_rev;
2384         __u8 host_interface;
2385         __le16 num_wcb;
2386         __le16 num_mcaddrs;
2387         __u8 perm_addr[ETH_ALEN];
2388         __le16 region_code;
2389         __le16 num_antenna;
2390         __le32 fw_rev;
2391         __le32 wcbbase0;
2392         __le32 rxwrptr;
2393         __le32 rxrdptr;
2394         __le32 ps_cookie;
2395         __le32 wcbbase1;
2396         __le32 wcbbase2;
2397         __le32 wcbbase3;
2398         __le32 fw_api_version;
2399         __le32 caps;
2400         __le32 num_of_ampdu_queues;
2401         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2402 } __packed;
2403
2404 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2405 {
2406         struct mwl8k_priv *priv = hw->priv;
2407         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2408         int rc, i;
2409         u32 api_version;
2410
2411         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2412         if (cmd == NULL)
2413                 return -ENOMEM;
2414
2415         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2416         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2417
2418         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2419         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2420
2421         rc = mwl8k_post_cmd(hw, &cmd->header);
2422
2423         if (!rc) {
2424                 int off;
2425
2426                 api_version = le32_to_cpu(cmd->fw_api_version);
2427                 if (priv->device_info->fw_api_ap != api_version) {
2428                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2429                                "  Expected %d got %d.\n", MWL8K_NAME,
2430                                priv->device_info->part_name,
2431                                priv->device_info->fw_api_ap,
2432                                api_version);
2433                         rc = -EINVAL;
2434                         goto done;
2435                 }
2436                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2437                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2438                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2439                 priv->hw_rev = cmd->hw_rev;
2440                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2441                 priv->ap_macids_supported = 0x000000ff;
2442                 priv->sta_macids_supported = 0x00000000;
2443                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2444                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2445                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2446                                    " but we only support %d.\n",
2447                                    priv->num_ampdu_queues,
2448                                    MWL8K_MAX_AMPDU_QUEUES);
2449                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2450                 }
2451                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2452                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2453
2454                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2455                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2456
2457                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2458                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2459                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2460                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2461
2462                 for (i = 0; i < priv->num_ampdu_queues; i++)
2463                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2464                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2465         }
2466
2467 done:
2468         kfree(cmd);
2469         return rc;
2470 }
2471
2472 /*
2473  * CMD_SET_HW_SPEC.
2474  */
2475 struct mwl8k_cmd_set_hw_spec {
2476         struct mwl8k_cmd_pkt header;
2477         __u8 hw_rev;
2478         __u8 host_interface;
2479         __le16 num_mcaddrs;
2480         __u8 perm_addr[ETH_ALEN];
2481         __le16 region_code;
2482         __le32 fw_rev;
2483         __le32 ps_cookie;
2484         __le32 caps;
2485         __le32 rx_queue_ptr;
2486         __le32 num_tx_queues;
2487         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2488         __le32 flags;
2489         __le32 num_tx_desc_per_queue;
2490         __le32 total_rxd;
2491 } __packed;
2492
2493 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2494  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2495  * the packets that are queued for more than 500ms, will be dropped in the
2496  * hardware. This helps minimizing the issues caused due to head-of-line
2497  * blocking where a slow client can hog the bandwidth and affect traffic to a
2498  * faster client.
2499  */
2500 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2501 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2502 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2503 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2504 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2505
2506 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2507 {
2508         struct mwl8k_priv *priv = hw->priv;
2509         struct mwl8k_cmd_set_hw_spec *cmd;
2510         int rc;
2511         int i;
2512
2513         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2514         if (cmd == NULL)
2515                 return -ENOMEM;
2516
2517         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2518         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2519
2520         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2521         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2522         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2523
2524         /*
2525          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2526          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2527          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2528          * priority is interpreted the right way in firmware.
2529          */
2530         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2531                 int j = mwl8k_tx_queues(priv) - 1 - i;
2532                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2533         }
2534
2535         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2536                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2537                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2538                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2539                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2540         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2541         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2542
2543         rc = mwl8k_post_cmd(hw, &cmd->header);
2544         kfree(cmd);
2545
2546         return rc;
2547 }
2548
2549 /*
2550  * CMD_MAC_MULTICAST_ADR.
2551  */
2552 struct mwl8k_cmd_mac_multicast_adr {
2553         struct mwl8k_cmd_pkt header;
2554         __le16 action;
2555         __le16 numaddr;
2556         __u8 addr[0][ETH_ALEN];
2557 };
2558
2559 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2560 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2561 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2562 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2563
2564 static struct mwl8k_cmd_pkt *
2565 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2566                               struct netdev_hw_addr_list *mc_list)
2567 {
2568         struct mwl8k_priv *priv = hw->priv;
2569         struct mwl8k_cmd_mac_multicast_adr *cmd;
2570         int size;
2571         int mc_count = 0;
2572
2573         if (mc_list)
2574                 mc_count = netdev_hw_addr_list_count(mc_list);
2575
2576         if (allmulti || mc_count > priv->num_mcaddrs) {
2577                 allmulti = 1;
2578                 mc_count = 0;
2579         }
2580
2581         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2582
2583         cmd = kzalloc(size, GFP_ATOMIC);
2584         if (cmd == NULL)
2585                 return NULL;
2586
2587         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2588         cmd->header.length = cpu_to_le16(size);
2589         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2590                                   MWL8K_ENABLE_RX_BROADCAST);
2591
2592         if (allmulti) {
2593                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2594         } else if (mc_count) {
2595                 struct netdev_hw_addr *ha;
2596                 int i = 0;
2597
2598                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2599                 cmd->numaddr = cpu_to_le16(mc_count);
2600                 netdev_hw_addr_list_for_each(ha, mc_list) {
2601                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2602                 }
2603         }
2604
2605         return &cmd->header;
2606 }
2607
2608 /*
2609  * CMD_GET_STAT.
2610  */
2611 struct mwl8k_cmd_get_stat {
2612         struct mwl8k_cmd_pkt header;
2613         __le32 stats[64];
2614 } __packed;
2615
2616 #define MWL8K_STAT_ACK_FAILURE  9
2617 #define MWL8K_STAT_RTS_FAILURE  12
2618 #define MWL8K_STAT_FCS_ERROR    24
2619 #define MWL8K_STAT_RTS_SUCCESS  11
2620
2621 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2622                               struct ieee80211_low_level_stats *stats)
2623 {
2624         struct mwl8k_cmd_get_stat *cmd;
2625         int rc;
2626
2627         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2628         if (cmd == NULL)
2629                 return -ENOMEM;
2630
2631         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2632         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2633
2634         rc = mwl8k_post_cmd(hw, &cmd->header);
2635         if (!rc) {
2636                 stats->dot11ACKFailureCount =
2637                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2638                 stats->dot11RTSFailureCount =
2639                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2640                 stats->dot11FCSErrorCount =
2641                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2642                 stats->dot11RTSSuccessCount =
2643                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2644         }
2645         kfree(cmd);
2646
2647         return rc;
2648 }
2649
2650 /*
2651  * CMD_RADIO_CONTROL.
2652  */
2653 struct mwl8k_cmd_radio_control {
2654         struct mwl8k_cmd_pkt header;
2655         __le16 action;
2656         __le16 control;
2657         __le16 radio_on;
2658 } __packed;
2659
2660 static int
2661 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2662 {
2663         struct mwl8k_priv *priv = hw->priv;
2664         struct mwl8k_cmd_radio_control *cmd;
2665         int rc;
2666
2667         if (enable == priv->radio_on && !force)
2668                 return 0;
2669
2670         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2671         if (cmd == NULL)
2672                 return -ENOMEM;
2673
2674         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2675         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2676         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2677         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2678         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2679
2680         rc = mwl8k_post_cmd(hw, &cmd->header);
2681         kfree(cmd);
2682
2683         if (!rc)
2684                 priv->radio_on = enable;
2685
2686         return rc;
2687 }
2688
2689 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2690 {
2691         return mwl8k_cmd_radio_control(hw, 0, 0);
2692 }
2693
2694 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2695 {
2696         return mwl8k_cmd_radio_control(hw, 1, 0);
2697 }
2698
2699 static int
2700 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2701 {
2702         struct mwl8k_priv *priv = hw->priv;
2703
2704         priv->radio_short_preamble = short_preamble;
2705
2706         return mwl8k_cmd_radio_control(hw, 1, 1);
2707 }
2708
2709 /*
2710  * CMD_RF_TX_POWER.
2711  */
2712 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2713
2714 struct mwl8k_cmd_rf_tx_power {
2715         struct mwl8k_cmd_pkt header;
2716         __le16 action;
2717         __le16 support_level;
2718         __le16 current_level;
2719         __le16 reserved;
2720         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2721 } __packed;
2722
2723 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2724 {
2725         struct mwl8k_cmd_rf_tx_power *cmd;
2726         int rc;
2727
2728         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2729         if (cmd == NULL)
2730                 return -ENOMEM;
2731
2732         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2733         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2734         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2735         cmd->support_level = cpu_to_le16(dBm);
2736
2737         rc = mwl8k_post_cmd(hw, &cmd->header);
2738         kfree(cmd);
2739
2740         return rc;
2741 }
2742
2743 /*
2744  * CMD_TX_POWER.
2745  */
2746 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2747
2748 struct mwl8k_cmd_tx_power {
2749         struct mwl8k_cmd_pkt header;
2750         __le16 action;
2751         __le16 band;
2752         __le16 channel;
2753         __le16 bw;
2754         __le16 sub_ch;
2755         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2756 } __packed;
2757
2758 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2759                                      struct ieee80211_conf *conf,
2760                                      unsigned short pwr)
2761 {
2762         struct ieee80211_channel *channel = conf->channel;
2763         struct mwl8k_cmd_tx_power *cmd;
2764         int rc;
2765         int i;
2766
2767         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2768         if (cmd == NULL)
2769                 return -ENOMEM;
2770
2771         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2772         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2773         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2774
2775         if (channel->band == IEEE80211_BAND_2GHZ)
2776                 cmd->band = cpu_to_le16(0x1);
2777         else if (channel->band == IEEE80211_BAND_5GHZ)
2778                 cmd->band = cpu_to_le16(0x4);
2779
2780         cmd->channel = cpu_to_le16(channel->hw_value);
2781
2782         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2783             conf->channel_type == NL80211_CHAN_HT20) {
2784                 cmd->bw = cpu_to_le16(0x2);
2785         } else {
2786                 cmd->bw = cpu_to_le16(0x4);
2787                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2788                         cmd->sub_ch = cpu_to_le16(0x3);
2789                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2790                         cmd->sub_ch = cpu_to_le16(0x1);
2791         }
2792
2793         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2794                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2795
2796         rc = mwl8k_post_cmd(hw, &cmd->header);
2797         kfree(cmd);
2798
2799         return rc;
2800 }
2801
2802 /*
2803  * CMD_RF_ANTENNA.
2804  */
2805 struct mwl8k_cmd_rf_antenna {
2806         struct mwl8k_cmd_pkt header;
2807         __le16 antenna;
2808         __le16 mode;
2809 } __packed;
2810
2811 #define MWL8K_RF_ANTENNA_RX             1
2812 #define MWL8K_RF_ANTENNA_TX             2
2813
2814 static int
2815 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2816 {
2817         struct mwl8k_cmd_rf_antenna *cmd;
2818         int rc;
2819
2820         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2821         if (cmd == NULL)
2822                 return -ENOMEM;
2823
2824         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2825         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2826         cmd->antenna = cpu_to_le16(antenna);
2827         cmd->mode = cpu_to_le16(mask);
2828
2829         rc = mwl8k_post_cmd(hw, &cmd->header);
2830         kfree(cmd);
2831
2832         return rc;
2833 }
2834
2835 /*
2836  * CMD_SET_BEACON.
2837  */
2838 struct mwl8k_cmd_set_beacon {
2839         struct mwl8k_cmd_pkt header;
2840         __le16 beacon_len;
2841         __u8 beacon[0];
2842 };
2843
2844 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2845                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2846 {
2847         struct mwl8k_cmd_set_beacon *cmd;
2848         int rc;
2849
2850         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2851         if (cmd == NULL)
2852                 return -ENOMEM;
2853
2854         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2855         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2856         cmd->beacon_len = cpu_to_le16(len);
2857         memcpy(cmd->beacon, beacon, len);
2858
2859         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2860         kfree(cmd);
2861
2862         return rc;
2863 }
2864
2865 /*
2866  * CMD_SET_PRE_SCAN.
2867  */
2868 struct mwl8k_cmd_set_pre_scan {
2869         struct mwl8k_cmd_pkt header;
2870 } __packed;
2871
2872 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2873 {
2874         struct mwl8k_cmd_set_pre_scan *cmd;
2875         int rc;
2876
2877         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2878         if (cmd == NULL)
2879                 return -ENOMEM;
2880
2881         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2882         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2883
2884         rc = mwl8k_post_cmd(hw, &cmd->header);
2885         kfree(cmd);
2886
2887         return rc;
2888 }
2889
2890 /*
2891  * CMD_SET_POST_SCAN.
2892  */
2893 struct mwl8k_cmd_set_post_scan {
2894         struct mwl8k_cmd_pkt header;
2895         __le32 isibss;
2896         __u8 bssid[ETH_ALEN];
2897 } __packed;
2898
2899 static int
2900 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2901 {
2902         struct mwl8k_cmd_set_post_scan *cmd;
2903         int rc;
2904
2905         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2906         if (cmd == NULL)
2907                 return -ENOMEM;
2908
2909         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2910         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2911         cmd->isibss = 0;
2912         memcpy(cmd->bssid, mac, ETH_ALEN);
2913
2914         rc = mwl8k_post_cmd(hw, &cmd->header);
2915         kfree(cmd);
2916
2917         return rc;
2918 }
2919
2920 /*
2921  * CMD_SET_RF_CHANNEL.
2922  */
2923 struct mwl8k_cmd_set_rf_channel {
2924         struct mwl8k_cmd_pkt header;
2925         __le16 action;
2926         __u8 current_channel;
2927         __le32 channel_flags;
2928 } __packed;
2929
2930 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2931                                     struct ieee80211_conf *conf)
2932 {
2933         struct ieee80211_channel *channel = conf->channel;
2934         struct mwl8k_cmd_set_rf_channel *cmd;
2935         int rc;
2936
2937         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2938         if (cmd == NULL)
2939                 return -ENOMEM;
2940
2941         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2942         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2943         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2944         cmd->current_channel = channel->hw_value;
2945
2946         if (channel->band == IEEE80211_BAND_2GHZ)
2947                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2948         else if (channel->band == IEEE80211_BAND_5GHZ)
2949                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2950
2951         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2952             conf->channel_type == NL80211_CHAN_HT20)
2953                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2954         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2955                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2956         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2957                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2958
2959         rc = mwl8k_post_cmd(hw, &cmd->header);
2960         kfree(cmd);
2961
2962         return rc;
2963 }
2964
2965 /*
2966  * CMD_SET_AID.
2967  */
2968 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2969 #define MWL8K_FRAME_PROT_11G                            0x07
2970 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2971 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2972
2973 struct mwl8k_cmd_update_set_aid {
2974         struct  mwl8k_cmd_pkt header;
2975         __le16  aid;
2976
2977          /* AP's MAC address (BSSID) */
2978         __u8    bssid[ETH_ALEN];
2979         __le16  protection_mode;
2980         __u8    supp_rates[14];
2981 } __packed;
2982
2983 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2984 {
2985         int i;
2986         int j;
2987
2988         /*
2989          * Clear nonstandard rates 4 and 13.
2990          */
2991         mask &= 0x1fef;
2992
2993         for (i = 0, j = 0; i < 14; i++) {
2994                 if (mask & (1 << i))
2995                         rates[j++] = mwl8k_rates_24[i].hw_value;
2996         }
2997 }
2998
2999 static int
3000 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3001                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3002 {
3003         struct mwl8k_cmd_update_set_aid *cmd;
3004         u16 prot_mode;
3005         int rc;
3006
3007         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3008         if (cmd == NULL)
3009                 return -ENOMEM;
3010
3011         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3012         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3013         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3014         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3015
3016         if (vif->bss_conf.use_cts_prot) {
3017                 prot_mode = MWL8K_FRAME_PROT_11G;
3018         } else {
3019                 switch (vif->bss_conf.ht_operation_mode &
3020                         IEEE80211_HT_OP_MODE_PROTECTION) {
3021                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3022                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3023                         break;
3024                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3025                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3026                         break;
3027                 default:
3028                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3029                         break;
3030                 }
3031         }
3032         cmd->protection_mode = cpu_to_le16(prot_mode);
3033
3034         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3035
3036         rc = mwl8k_post_cmd(hw, &cmd->header);
3037         kfree(cmd);
3038
3039         return rc;
3040 }
3041
3042 /*
3043  * CMD_SET_RATE.
3044  */
3045 struct mwl8k_cmd_set_rate {
3046         struct  mwl8k_cmd_pkt header;
3047         __u8    legacy_rates[14];
3048
3049         /* Bitmap for supported MCS codes.  */
3050         __u8    mcs_set[16];
3051         __u8    reserved[16];
3052 } __packed;
3053
3054 static int
3055 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3056                    u32 legacy_rate_mask, u8 *mcs_rates)
3057 {
3058         struct mwl8k_cmd_set_rate *cmd;
3059         int rc;
3060
3061         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3062         if (cmd == NULL)
3063                 return -ENOMEM;
3064
3065         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3066         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3067         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3068         memcpy(cmd->mcs_set, mcs_rates, 16);
3069
3070         rc = mwl8k_post_cmd(hw, &cmd->header);
3071         kfree(cmd);
3072
3073         return rc;
3074 }
3075
3076 /*
3077  * CMD_FINALIZE_JOIN.
3078  */
3079 #define MWL8K_FJ_BEACON_MAXLEN  128
3080
3081 struct mwl8k_cmd_finalize_join {
3082         struct mwl8k_cmd_pkt header;
3083         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3084         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3085 } __packed;
3086
3087 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3088                                    int framelen, int dtim)
3089 {
3090         struct mwl8k_cmd_finalize_join *cmd;
3091         struct ieee80211_mgmt *payload = frame;
3092         int payload_len;
3093         int rc;
3094
3095         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3096         if (cmd == NULL)
3097                 return -ENOMEM;
3098
3099         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3100         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3101         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3102
3103         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3104         if (payload_len < 0)
3105                 payload_len = 0;
3106         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3107                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3108
3109         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3110
3111         rc = mwl8k_post_cmd(hw, &cmd->header);
3112         kfree(cmd);
3113
3114         return rc;
3115 }
3116
3117 /*
3118  * CMD_SET_RTS_THRESHOLD.
3119  */
3120 struct mwl8k_cmd_set_rts_threshold {
3121         struct mwl8k_cmd_pkt header;
3122         __le16 action;
3123         __le16 threshold;
3124 } __packed;
3125
3126 static int
3127 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3128 {
3129         struct mwl8k_cmd_set_rts_threshold *cmd;
3130         int rc;
3131
3132         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3133         if (cmd == NULL)
3134                 return -ENOMEM;
3135
3136         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3137         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3138         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3139         cmd->threshold = cpu_to_le16(rts_thresh);
3140
3141         rc = mwl8k_post_cmd(hw, &cmd->header);
3142         kfree(cmd);
3143
3144         return rc;
3145 }
3146
3147 /*
3148  * CMD_SET_SLOT.
3149  */
3150 struct mwl8k_cmd_set_slot {
3151         struct mwl8k_cmd_pkt header;
3152         __le16 action;
3153         __u8 short_slot;
3154 } __packed;
3155
3156 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3157 {
3158         struct mwl8k_cmd_set_slot *cmd;
3159         int rc;
3160
3161         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3162         if (cmd == NULL)
3163                 return -ENOMEM;
3164
3165         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3166         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3167         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3168         cmd->short_slot = short_slot_time;
3169
3170         rc = mwl8k_post_cmd(hw, &cmd->header);
3171         kfree(cmd);
3172
3173         return rc;
3174 }
3175
3176 /*
3177  * CMD_SET_EDCA_PARAMS.
3178  */
3179 struct mwl8k_cmd_set_edca_params {
3180         struct mwl8k_cmd_pkt header;
3181
3182         /* See MWL8K_SET_EDCA_XXX below */
3183         __le16 action;
3184
3185         /* TX opportunity in units of 32 us */
3186         __le16 txop;
3187
3188         union {
3189                 struct {
3190                         /* Log exponent of max contention period: 0...15 */
3191                         __le32 log_cw_max;
3192
3193                         /* Log exponent of min contention period: 0...15 */
3194                         __le32 log_cw_min;
3195
3196                         /* Adaptive interframe spacing in units of 32us */
3197                         __u8 aifs;
3198
3199                         /* TX queue to configure */
3200                         __u8 txq;
3201                 } ap;
3202                 struct {
3203                         /* Log exponent of max contention period: 0...15 */
3204                         __u8 log_cw_max;
3205
3206                         /* Log exponent of min contention period: 0...15 */
3207                         __u8 log_cw_min;
3208
3209                         /* Adaptive interframe spacing in units of 32us */
3210                         __u8 aifs;
3211
3212                         /* TX queue to configure */
3213                         __u8 txq;
3214                 } sta;
3215         };
3216 } __packed;
3217
3218 #define MWL8K_SET_EDCA_CW       0x01
3219 #define MWL8K_SET_EDCA_TXOP     0x02
3220 #define MWL8K_SET_EDCA_AIFS     0x04
3221
3222 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3223                                  MWL8K_SET_EDCA_TXOP | \
3224                                  MWL8K_SET_EDCA_AIFS)
3225
3226 static int
3227 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3228                           __u16 cw_min, __u16 cw_max,
3229                           __u8 aifs, __u16 txop)
3230 {
3231         struct mwl8k_priv *priv = hw->priv;
3232         struct mwl8k_cmd_set_edca_params *cmd;
3233         int rc;
3234
3235         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3236         if (cmd == NULL)
3237                 return -ENOMEM;
3238
3239         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3240         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3241         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3242         cmd->txop = cpu_to_le16(txop);
3243         if (priv->ap_fw) {
3244                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3245                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3246                 cmd->ap.aifs = aifs;
3247                 cmd->ap.txq = qnum;
3248         } else {
3249                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3250                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3251                 cmd->sta.aifs = aifs;
3252                 cmd->sta.txq = qnum;
3253         }
3254
3255         rc = mwl8k_post_cmd(hw, &cmd->header);
3256         kfree(cmd);
3257
3258         return rc;
3259 }
3260
3261 /*
3262  * CMD_SET_WMM_MODE.
3263  */
3264 struct mwl8k_cmd_set_wmm_mode {
3265         struct mwl8k_cmd_pkt header;
3266         __le16 action;
3267 } __packed;
3268
3269 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3270 {
3271         struct mwl8k_priv *priv = hw->priv;
3272         struct mwl8k_cmd_set_wmm_mode *cmd;
3273         int rc;
3274
3275         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3276         if (cmd == NULL)
3277                 return -ENOMEM;
3278
3279         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3280         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3281         cmd->action = cpu_to_le16(!!enable);
3282
3283         rc = mwl8k_post_cmd(hw, &cmd->header);
3284         kfree(cmd);
3285
3286         if (!rc)
3287                 priv->wmm_enabled = enable;
3288
3289         return rc;
3290 }
3291
3292 /*
3293  * CMD_MIMO_CONFIG.
3294  */
3295 struct mwl8k_cmd_mimo_config {
3296         struct mwl8k_cmd_pkt header;
3297         __le32 action;
3298         __u8 rx_antenna_map;
3299         __u8 tx_antenna_map;
3300 } __packed;
3301
3302 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3303 {
3304         struct mwl8k_cmd_mimo_config *cmd;
3305         int rc;
3306
3307         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3308         if (cmd == NULL)
3309                 return -ENOMEM;
3310
3311         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3312         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3313         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3314         cmd->rx_antenna_map = rx;
3315         cmd->tx_antenna_map = tx;
3316
3317         rc = mwl8k_post_cmd(hw, &cmd->header);
3318         kfree(cmd);
3319
3320         return rc;
3321 }
3322
3323 /*
3324  * CMD_USE_FIXED_RATE (STA version).
3325  */
3326 struct mwl8k_cmd_use_fixed_rate_sta {
3327         struct mwl8k_cmd_pkt header;
3328         __le32 action;
3329         __le32 allow_rate_drop;
3330         __le32 num_rates;
3331         struct {
3332                 __le32 is_ht_rate;
3333                 __le32 enable_retry;
3334                 __le32 rate;
3335                 __le32 retry_count;
3336         } rate_entry[8];
3337         __le32 rate_type;
3338         __le32 reserved1;
3339         __le32 reserved2;
3340 } __packed;
3341
3342 #define MWL8K_USE_AUTO_RATE     0x0002
3343 #define MWL8K_UCAST_RATE        0
3344
3345 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3346 {
3347         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3348         int rc;
3349
3350         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3351         if (cmd == NULL)
3352                 return -ENOMEM;
3353
3354         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3355         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3356         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3357         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3358
3359         rc = mwl8k_post_cmd(hw, &cmd->header);
3360         kfree(cmd);
3361
3362         return rc;
3363 }
3364
3365 /*
3366  * CMD_USE_FIXED_RATE (AP version).
3367  */
3368 struct mwl8k_cmd_use_fixed_rate_ap {
3369         struct mwl8k_cmd_pkt header;
3370         __le32 action;
3371         __le32 allow_rate_drop;
3372         __le32 num_rates;
3373         struct mwl8k_rate_entry_ap {
3374                 __le32 is_ht_rate;
3375                 __le32 enable_retry;
3376                 __le32 rate;
3377                 __le32 retry_count;
3378         } rate_entry[4];
3379         u8 multicast_rate;
3380         u8 multicast_rate_type;
3381         u8 management_rate;
3382 } __packed;
3383
3384 static int
3385 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3386 {
3387         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3388         int rc;
3389
3390         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3391         if (cmd == NULL)
3392                 return -ENOMEM;
3393
3394         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3395         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3396         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3397         cmd->multicast_rate = mcast;
3398         cmd->management_rate = mgmt;
3399
3400         rc = mwl8k_post_cmd(hw, &cmd->header);
3401         kfree(cmd);
3402
3403         return rc;
3404 }
3405
3406 /*
3407  * CMD_ENABLE_SNIFFER.
3408  */
3409 struct mwl8k_cmd_enable_sniffer {
3410         struct mwl8k_cmd_pkt header;
3411         __le32 action;
3412 } __packed;
3413
3414 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3415 {
3416         struct mwl8k_cmd_enable_sniffer *cmd;
3417         int rc;
3418
3419         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3420         if (cmd == NULL)
3421                 return -ENOMEM;
3422
3423         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3424         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3425         cmd->action = cpu_to_le32(!!enable);
3426
3427         rc = mwl8k_post_cmd(hw, &cmd->header);
3428         kfree(cmd);
3429
3430         return rc;
3431 }
3432
3433 struct mwl8k_cmd_update_mac_addr {
3434         struct mwl8k_cmd_pkt header;
3435         union {
3436                 struct {
3437                         __le16 mac_type;
3438                         __u8 mac_addr[ETH_ALEN];
3439                 } mbss;
3440                 __u8 mac_addr[ETH_ALEN];
3441         };
3442 } __packed;
3443
3444 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3445 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3446 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3447 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3448
3449 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3450                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3451 {
3452         struct mwl8k_priv *priv = hw->priv;
3453         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3454         struct mwl8k_cmd_update_mac_addr *cmd;
3455         int mac_type;
3456         int rc;
3457
3458         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3459         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3460                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3461                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3462                 else
3463                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3464         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3465                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3466                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3467                 else
3468                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3469         }
3470
3471         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3472         if (cmd == NULL)
3473                 return -ENOMEM;
3474
3475         if (set)
3476                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3477         else
3478                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3479
3480         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3481         if (priv->ap_fw) {
3482                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3483                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3484         } else {
3485                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3486         }
3487
3488         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3489         kfree(cmd);
3490
3491         return rc;
3492 }
3493
3494 /*
3495  * MWL8K_CMD_SET_MAC_ADDR.
3496  */
3497 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3498                                   struct ieee80211_vif *vif, u8 *mac)
3499 {
3500         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3501 }
3502
3503 /*
3504  * MWL8K_CMD_DEL_MAC_ADDR.
3505  */
3506 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3507                                   struct ieee80211_vif *vif, u8 *mac)
3508 {
3509         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3510 }
3511
3512 /*
3513  * CMD_SET_RATEADAPT_MODE.
3514  */
3515 struct mwl8k_cmd_set_rate_adapt_mode {
3516         struct mwl8k_cmd_pkt header;
3517         __le16 action;
3518         __le16 mode;
3519 } __packed;
3520
3521 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3522 {
3523         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3524         int rc;
3525
3526         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3527         if (cmd == NULL)
3528                 return -ENOMEM;
3529
3530         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3531         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3532         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3533         cmd->mode = cpu_to_le16(mode);
3534
3535         rc = mwl8k_post_cmd(hw, &cmd->header);
3536         kfree(cmd);
3537
3538         return rc;
3539 }
3540
3541 /*
3542  * CMD_GET_WATCHDOG_BITMAP.
3543  */
3544 struct mwl8k_cmd_get_watchdog_bitmap {
3545         struct mwl8k_cmd_pkt header;
3546         u8      bitmap;
3547 } __packed;
3548
3549 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3550 {
3551         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3552         int rc;
3553
3554         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3555         if (cmd == NULL)
3556                 return -ENOMEM;
3557
3558         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3559         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3560
3561         rc = mwl8k_post_cmd(hw, &cmd->header);
3562         if (!rc)
3563                 *bitmap = cmd->bitmap;
3564
3565         kfree(cmd);
3566
3567         return rc;
3568 }
3569
3570 #define INVALID_BA      0xAA
3571 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3572 {
3573         int rc;
3574         u8 bitmap = 0, stream_index;
3575         struct mwl8k_ampdu_stream *streams;
3576         struct mwl8k_priv *priv =
3577                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3578
3579         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3580         if (rc)
3581                 return;
3582
3583         if (bitmap == INVALID_BA)
3584                 return;
3585
3586         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3587         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3588
3589         BUG_ON(stream_index >= priv->num_ampdu_queues);
3590
3591         streams = &priv->ampdu[stream_index];
3592
3593         if (streams->state == AMPDU_STREAM_ACTIVE)
3594                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3595
3596         return;
3597 }
3598
3599
3600 /*
3601  * CMD_BSS_START.
3602  */
3603 struct mwl8k_cmd_bss_start {
3604         struct mwl8k_cmd_pkt header;
3605         __le32 enable;
3606 } __packed;
3607
3608 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3609                                struct ieee80211_vif *vif, int enable)
3610 {
3611         struct mwl8k_cmd_bss_start *cmd;
3612         int rc;
3613
3614         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3615         if (cmd == NULL)
3616                 return -ENOMEM;
3617
3618         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3619         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3620         cmd->enable = cpu_to_le32(enable);
3621
3622         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3623         kfree(cmd);
3624
3625         return rc;
3626 }
3627
3628 /*
3629  * CMD_BASTREAM.
3630  */
3631
3632 /*
3633  * UPSTREAM is tx direction
3634  */
3635 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3636 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3637
3638 enum ba_stream_action_type {
3639         MWL8K_BA_CREATE,
3640         MWL8K_BA_UPDATE,
3641         MWL8K_BA_DESTROY,
3642         MWL8K_BA_FLUSH,
3643         MWL8K_BA_CHECK,
3644 };
3645
3646
3647 struct mwl8k_create_ba_stream {
3648         __le32  flags;
3649         __le32  idle_thrs;
3650         __le32  bar_thrs;
3651         __le32  window_size;
3652         u8      peer_mac_addr[6];
3653         u8      dialog_token;
3654         u8      tid;
3655         u8      queue_id;
3656         u8      param_info;
3657         __le32  ba_context;
3658         u8      reset_seq_no_flag;
3659         __le16  curr_seq_no;
3660         u8      sta_src_mac_addr[6];
3661 } __packed;
3662
3663 struct mwl8k_destroy_ba_stream {
3664         __le32  flags;
3665         __le32  ba_context;
3666 } __packed;
3667
3668 struct mwl8k_cmd_bastream {
3669         struct mwl8k_cmd_pkt    header;
3670         __le32  action;
3671         union {
3672                 struct mwl8k_create_ba_stream   create_params;
3673                 struct mwl8k_destroy_ba_stream  destroy_params;
3674         };
3675 } __packed;
3676
3677 static int
3678 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3679 {
3680         struct mwl8k_cmd_bastream *cmd;
3681         int rc;
3682
3683         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3684         if (cmd == NULL)
3685                 return -ENOMEM;
3686
3687         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3688         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3689
3690         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3691
3692         cmd->create_params.queue_id = stream->idx;
3693         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3694                ETH_ALEN);
3695         cmd->create_params.tid = stream->tid;
3696
3697         cmd->create_params.flags =
3698                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3699                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3700
3701         rc = mwl8k_post_cmd(hw, &cmd->header);
3702
3703         kfree(cmd);
3704
3705         return rc;
3706 }
3707
3708 static int
3709 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3710                 u8 buf_size)
3711 {
3712         struct mwl8k_cmd_bastream *cmd;
3713         int rc;
3714
3715         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3716         if (cmd == NULL)
3717                 return -ENOMEM;
3718
3719
3720         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3721         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3722
3723         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3724
3725         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3726         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3727         cmd->create_params.queue_id = stream->idx;
3728
3729         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3730         cmd->create_params.tid = stream->tid;
3731         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3732         cmd->create_params.reset_seq_no_flag = 1;
3733
3734         cmd->create_params.param_info =
3735                 (stream->sta->ht_cap.ampdu_factor &
3736                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3737                 ((stream->sta->ht_cap.ampdu_density << 2) &
3738                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3739
3740         cmd->create_params.flags =
3741                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3742                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3743
3744         rc = mwl8k_post_cmd(hw, &cmd->header);
3745
3746         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3747                 stream->sta->addr, stream->tid);
3748         kfree(cmd);
3749
3750         return rc;
3751 }
3752
3753 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3754                              struct mwl8k_ampdu_stream *stream)
3755 {
3756         struct mwl8k_cmd_bastream *cmd;
3757
3758         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3759         if (cmd == NULL)
3760                 return;
3761
3762         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3763         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3764         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3765
3766         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3767         mwl8k_post_cmd(hw, &cmd->header);
3768
3769         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3770
3771         kfree(cmd);
3772 }
3773
3774 /*
3775  * CMD_SET_NEW_STN.
3776  */
3777 struct mwl8k_cmd_set_new_stn {
3778         struct mwl8k_cmd_pkt header;
3779         __le16 aid;
3780         __u8 mac_addr[6];
3781         __le16 stn_id;
3782         __le16 action;
3783         __le16 rsvd;
3784         __le32 legacy_rates;
3785         __u8 ht_rates[4];
3786         __le16 cap_info;
3787         __le16 ht_capabilities_info;
3788         __u8 mac_ht_param_info;
3789         __u8 rev;
3790         __u8 control_channel;
3791         __u8 add_channel;
3792         __le16 op_mode;
3793         __le16 stbc;
3794         __u8 add_qos_info;
3795         __u8 is_qos_sta;
3796         __le32 fw_sta_ptr;
3797 } __packed;
3798
3799 #define MWL8K_STA_ACTION_ADD            0
3800 #define MWL8K_STA_ACTION_REMOVE         2
3801
3802 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3803                                      struct ieee80211_vif *vif,
3804                                      struct ieee80211_sta *sta)
3805 {
3806         struct mwl8k_cmd_set_new_stn *cmd;
3807         u32 rates;
3808         int rc;
3809
3810         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3811         if (cmd == NULL)
3812                 return -ENOMEM;
3813
3814         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3815         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3816         cmd->aid = cpu_to_le16(sta->aid);
3817         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3818         cmd->stn_id = cpu_to_le16(sta->aid);
3819         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3820         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3821                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3822         else
3823                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3824         cmd->legacy_rates = cpu_to_le32(rates);
3825         if (sta->ht_cap.ht_supported) {
3826                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3827                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3828                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3829                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3830                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3831                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3832                         ((sta->ht_cap.ampdu_density & 7) << 2);
3833                 cmd->is_qos_sta = 1;
3834         }
3835
3836         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3837         kfree(cmd);
3838
3839         return rc;
3840 }
3841
3842 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3843                                           struct ieee80211_vif *vif)
3844 {
3845         struct mwl8k_cmd_set_new_stn *cmd;
3846         int rc;
3847
3848         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3849         if (cmd == NULL)
3850                 return -ENOMEM;
3851
3852         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3853         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3854         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3855
3856         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3857         kfree(cmd);
3858
3859         return rc;
3860 }
3861
3862 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3863                                      struct ieee80211_vif *vif, u8 *addr)
3864 {
3865         struct mwl8k_cmd_set_new_stn *cmd;
3866         int rc;
3867
3868         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3869         if (cmd == NULL)
3870                 return -ENOMEM;
3871
3872         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3873         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3874         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3875         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3876
3877         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3878         kfree(cmd);
3879
3880         return rc;
3881 }
3882
3883 /*
3884  * CMD_UPDATE_ENCRYPTION.
3885  */
3886
3887 #define MAX_ENCR_KEY_LENGTH     16
3888 #define MIC_KEY_LENGTH          8
3889
3890 struct mwl8k_cmd_update_encryption {
3891         struct mwl8k_cmd_pkt header;
3892
3893         __le32 action;
3894         __le32 reserved;
3895         __u8 mac_addr[6];
3896         __u8 encr_type;
3897
3898 } __packed;
3899
3900 struct mwl8k_cmd_set_key {
3901         struct mwl8k_cmd_pkt header;
3902
3903         __le32 action;
3904         __le32 reserved;
3905         __le16 length;
3906         __le16 key_type_id;
3907         __le32 key_info;
3908         __le32 key_id;
3909         __le16 key_len;
3910         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3911         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3912         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3913         __le16 tkip_rsc_low;
3914         __le32 tkip_rsc_high;
3915         __le16 tkip_tsc_low;
3916         __le32 tkip_tsc_high;
3917         __u8 mac_addr[6];
3918 } __packed;
3919
3920 enum {
3921         MWL8K_ENCR_ENABLE,
3922         MWL8K_ENCR_SET_KEY,
3923         MWL8K_ENCR_REMOVE_KEY,
3924         MWL8K_ENCR_SET_GROUP_KEY,
3925 };
3926
3927 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3928 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3929 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3930 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3931 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3932
3933 enum {
3934         MWL8K_ALG_WEP,
3935         MWL8K_ALG_TKIP,
3936         MWL8K_ALG_CCMP,
3937 };
3938
3939 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3940 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3941 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3942 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3943 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3944
3945 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3946                                               struct ieee80211_vif *vif,
3947                                               u8 *addr,
3948                                               u8 encr_type)
3949 {
3950         struct mwl8k_cmd_update_encryption *cmd;
3951         int rc;
3952
3953         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3954         if (cmd == NULL)
3955                 return -ENOMEM;
3956
3957         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3958         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3959         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3960         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3961         cmd->encr_type = encr_type;
3962
3963         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3964         kfree(cmd);
3965
3966         return rc;
3967 }
3968
3969 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3970                                                 u8 *addr,
3971                                                 struct ieee80211_key_conf *key)
3972 {
3973         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3974         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3975         cmd->length = cpu_to_le16(sizeof(*cmd) -
3976                                 offsetof(struct mwl8k_cmd_set_key, length));
3977         cmd->key_id = cpu_to_le32(key->keyidx);
3978         cmd->key_len = cpu_to_le16(key->keylen);
3979         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3980
3981         switch (key->cipher) {
3982         case WLAN_CIPHER_SUITE_WEP40:
3983         case WLAN_CIPHER_SUITE_WEP104:
3984                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3985                 if (key->keyidx == 0)
3986                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3987
3988                 break;
3989         case WLAN_CIPHER_SUITE_TKIP:
3990                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3991                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3992                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3993                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3994                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3995                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3996                 break;
3997         case WLAN_CIPHER_SUITE_CCMP:
3998                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3999                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4000                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4001                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4002                 break;
4003         default:
4004                 return -ENOTSUPP;
4005         }
4006
4007         return 0;
4008 }
4009
4010 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4011                                                 struct ieee80211_vif *vif,
4012                                                 u8 *addr,
4013                                                 struct ieee80211_key_conf *key)
4014 {
4015         struct mwl8k_cmd_set_key *cmd;
4016         int rc;
4017         int keymlen;
4018         u32 action;
4019         u8 idx;
4020         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4021
4022         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4023         if (cmd == NULL)
4024                 return -ENOMEM;
4025
4026         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4027         if (rc < 0)
4028                 goto done;
4029
4030         idx = key->keyidx;
4031
4032         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4033                 action = MWL8K_ENCR_SET_KEY;
4034         else
4035                 action = MWL8K_ENCR_SET_GROUP_KEY;
4036
4037         switch (key->cipher) {
4038         case WLAN_CIPHER_SUITE_WEP40:
4039         case WLAN_CIPHER_SUITE_WEP104:
4040                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4041                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4042                                                 sizeof(*key) + key->keylen);
4043                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4044                 }
4045
4046                 keymlen = key->keylen;
4047                 action = MWL8K_ENCR_SET_KEY;
4048                 break;
4049         case WLAN_CIPHER_SUITE_TKIP:
4050                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4051                 break;
4052         case WLAN_CIPHER_SUITE_CCMP:
4053                 keymlen = key->keylen;
4054                 break;
4055         default:
4056                 rc = -ENOTSUPP;
4057                 goto done;
4058         }
4059
4060         memcpy(cmd->key_material, key->key, keymlen);
4061         cmd->action = cpu_to_le32(action);
4062
4063         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4064 done:
4065         kfree(cmd);
4066
4067         return rc;
4068 }
4069
4070 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4071                                                 struct ieee80211_vif *vif,
4072                                                 u8 *addr,
4073                                                 struct ieee80211_key_conf *key)
4074 {
4075         struct mwl8k_cmd_set_key *cmd;
4076         int rc;
4077         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4078
4079         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4080         if (cmd == NULL)
4081                 return -ENOMEM;
4082
4083         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4084         if (rc < 0)
4085                 goto done;
4086
4087         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4088                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4089                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4090
4091         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4092
4093         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4094 done:
4095         kfree(cmd);
4096
4097         return rc;
4098 }
4099
4100 static int mwl8k_set_key(struct ieee80211_hw *hw,
4101                          enum set_key_cmd cmd_param,
4102                          struct ieee80211_vif *vif,
4103                          struct ieee80211_sta *sta,
4104                          struct ieee80211_key_conf *key)
4105 {
4106         int rc = 0;
4107         u8 encr_type;
4108         u8 *addr;
4109         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4110
4111         if (vif->type == NL80211_IFTYPE_STATION)
4112                 return -EOPNOTSUPP;
4113
4114         if (sta == NULL)
4115                 addr = vif->addr;
4116         else
4117                 addr = sta->addr;
4118
4119         if (cmd_param == SET_KEY) {
4120                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4121                 if (rc)
4122                         goto out;
4123
4124                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4125                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4126                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4127                 else
4128                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4129
4130                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4131                                                                 encr_type);
4132                 if (rc)
4133                         goto out;
4134
4135                 mwl8k_vif->is_hw_crypto_enabled = true;
4136
4137         } else {
4138                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4139
4140                 if (rc)
4141                         goto out;
4142         }
4143 out:
4144         return rc;
4145 }
4146
4147 /*
4148  * CMD_UPDATE_STADB.
4149  */
4150 struct ewc_ht_info {
4151         __le16  control1;
4152         __le16  control2;
4153         __le16  control3;
4154 } __packed;
4155
4156 struct peer_capability_info {
4157         /* Peer type - AP vs. STA.  */
4158         __u8    peer_type;
4159
4160         /* Basic 802.11 capabilities from assoc resp.  */
4161         __le16  basic_caps;
4162
4163         /* Set if peer supports 802.11n high throughput (HT).  */
4164         __u8    ht_support;
4165
4166         /* Valid if HT is supported.  */
4167         __le16  ht_caps;
4168         __u8    extended_ht_caps;
4169         struct ewc_ht_info      ewc_info;
4170
4171         /* Legacy rate table. Intersection of our rates and peer rates.  */
4172         __u8    legacy_rates[12];
4173
4174         /* HT rate table. Intersection of our rates and peer rates.  */
4175         __u8    ht_rates[16];
4176         __u8    pad[16];
4177
4178         /* If set, interoperability mode, no proprietary extensions.  */
4179         __u8    interop;
4180         __u8    pad2;
4181         __u8    station_id;
4182         __le16  amsdu_enabled;
4183 } __packed;
4184
4185 struct mwl8k_cmd_update_stadb {
4186         struct mwl8k_cmd_pkt header;
4187
4188         /* See STADB_ACTION_TYPE */
4189         __le32  action;
4190
4191         /* Peer MAC address */
4192         __u8    peer_addr[ETH_ALEN];
4193
4194         __le32  reserved;
4195
4196         /* Peer info - valid during add/update.  */
4197         struct peer_capability_info     peer_info;
4198 } __packed;
4199
4200 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4201 #define MWL8K_STA_DB_DEL_ENTRY          2
4202
4203 /* Peer Entry flags - used to define the type of the peer node */
4204 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4205
4206 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4207                                       struct ieee80211_vif *vif,
4208                                       struct ieee80211_sta *sta)
4209 {
4210         struct mwl8k_cmd_update_stadb *cmd;
4211         struct peer_capability_info *p;
4212         u32 rates;
4213         int rc;
4214
4215         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4216         if (cmd == NULL)
4217                 return -ENOMEM;
4218
4219         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4220         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4221         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4222         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4223
4224         p = &cmd->peer_info;
4225         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4226         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4227         p->ht_support = sta->ht_cap.ht_supported;
4228         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4229         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4230                 ((sta->ht_cap.ampdu_density & 7) << 2);
4231         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4232                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4233         else
4234                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4235         legacy_rate_mask_to_array(p->legacy_rates, rates);
4236         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4237         p->interop = 1;
4238         p->amsdu_enabled = 0;
4239
4240         rc = mwl8k_post_cmd(hw, &cmd->header);
4241         kfree(cmd);
4242
4243         return rc ? rc : p->station_id;
4244 }
4245
4246 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4247                                       struct ieee80211_vif *vif, u8 *addr)
4248 {
4249         struct mwl8k_cmd_update_stadb *cmd;
4250         int rc;
4251
4252         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4253         if (cmd == NULL)
4254                 return -ENOMEM;
4255
4256         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4257         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4258         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4259         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4260
4261         rc = mwl8k_post_cmd(hw, &cmd->header);
4262         kfree(cmd);
4263
4264         return rc;
4265 }
4266
4267
4268 /*
4269  * Interrupt handling.
4270  */
4271 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4272 {
4273         struct ieee80211_hw *hw = dev_id;
4274         struct mwl8k_priv *priv = hw->priv;
4275         u32 status;
4276
4277         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4278         if (!status)
4279                 return IRQ_NONE;
4280
4281         if (status & MWL8K_A2H_INT_TX_DONE) {
4282                 status &= ~MWL8K_A2H_INT_TX_DONE;
4283                 tasklet_schedule(&priv->poll_tx_task);
4284         }
4285
4286         if (status & MWL8K_A2H_INT_RX_READY) {
4287                 status &= ~MWL8K_A2H_INT_RX_READY;
4288                 tasklet_schedule(&priv->poll_rx_task);
4289         }
4290
4291         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4292                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4293                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4294         }
4295
4296         if (status)
4297                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4298
4299         if (status & MWL8K_A2H_INT_OPC_DONE) {
4300                 if (priv->hostcmd_wait != NULL)
4301                         complete(priv->hostcmd_wait);
4302         }
4303
4304         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4305                 if (!mutex_is_locked(&priv->fw_mutex) &&
4306                     priv->radio_on && priv->pending_tx_pkts)
4307                         mwl8k_tx_start(priv);
4308         }
4309
4310         return IRQ_HANDLED;
4311 }
4312
4313 static void mwl8k_tx_poll(unsigned long data)
4314 {
4315         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4316         struct mwl8k_priv *priv = hw->priv;
4317         int limit;
4318         int i;
4319
4320         limit = 32;
4321
4322         spin_lock_bh(&priv->tx_lock);
4323
4324         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4325                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4326
4327         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4328                 complete(priv->tx_wait);
4329                 priv->tx_wait = NULL;
4330         }
4331
4332         spin_unlock_bh(&priv->tx_lock);
4333
4334         if (limit) {
4335                 writel(~MWL8K_A2H_INT_TX_DONE,
4336                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4337         } else {
4338                 tasklet_schedule(&priv->poll_tx_task);
4339         }
4340 }
4341
4342 static void mwl8k_rx_poll(unsigned long data)
4343 {
4344         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4345         struct mwl8k_priv *priv = hw->priv;
4346         int limit;
4347
4348         limit = 32;
4349         limit -= rxq_process(hw, 0, limit);
4350         limit -= rxq_refill(hw, 0, limit);
4351
4352         if (limit) {
4353                 writel(~MWL8K_A2H_INT_RX_READY,
4354                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4355         } else {
4356                 tasklet_schedule(&priv->poll_rx_task);
4357         }
4358 }
4359
4360
4361 /*
4362  * Core driver operations.
4363  */
4364 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4365 {
4366         struct mwl8k_priv *priv = hw->priv;
4367         int index = skb_get_queue_mapping(skb);
4368
4369         if (!priv->radio_on) {
4370                 wiphy_debug(hw->wiphy,
4371                             "dropped TX frame since radio disabled\n");
4372                 dev_kfree_skb(skb);
4373                 return;
4374         }
4375
4376         mwl8k_txq_xmit(hw, index, skb);
4377 }
4378
4379 static int mwl8k_start(struct ieee80211_hw *hw)
4380 {
4381         struct mwl8k_priv *priv = hw->priv;
4382         int rc;
4383
4384         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4385                          IRQF_SHARED, MWL8K_NAME, hw);
4386         if (rc) {
4387                 priv->irq = -1;
4388                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4389                 return -EIO;
4390         }
4391         priv->irq = priv->pdev->irq;
4392
4393         /* Enable TX reclaim and RX tasklets.  */
4394         tasklet_enable(&priv->poll_tx_task);
4395         tasklet_enable(&priv->poll_rx_task);
4396
4397         /* Enable interrupts */
4398         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4399         iowrite32(MWL8K_A2H_EVENTS,
4400                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4401
4402         rc = mwl8k_fw_lock(hw);
4403         if (!rc) {
4404                 rc = mwl8k_cmd_radio_enable(hw);
4405
4406                 if (!priv->ap_fw) {
4407                         if (!rc)
4408                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4409
4410                         if (!rc)
4411                                 rc = mwl8k_cmd_set_pre_scan(hw);
4412
4413                         if (!rc)
4414                                 rc = mwl8k_cmd_set_post_scan(hw,
4415                                                 "\x00\x00\x00\x00\x00\x00");
4416                 }
4417
4418                 if (!rc)
4419                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4420
4421                 if (!rc)
4422                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4423
4424                 mwl8k_fw_unlock(hw);
4425         }
4426
4427         if (rc) {
4428                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4429                 free_irq(priv->pdev->irq, hw);
4430                 priv->irq = -1;
4431                 tasklet_disable(&priv->poll_tx_task);
4432                 tasklet_disable(&priv->poll_rx_task);
4433         }
4434
4435         return rc;
4436 }
4437
4438 static void mwl8k_stop(struct ieee80211_hw *hw)
4439 {
4440         struct mwl8k_priv *priv = hw->priv;
4441         int i;
4442
4443         if (!priv->hw_restart_in_progress)
4444                 mwl8k_cmd_radio_disable(hw);
4445
4446         ieee80211_stop_queues(hw);
4447
4448         /* Disable interrupts */
4449         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4450         if (priv->irq != -1) {
4451                 free_irq(priv->pdev->irq, hw);
4452                 priv->irq = -1;
4453         }
4454
4455         /* Stop finalize join worker */
4456         cancel_work_sync(&priv->finalize_join_worker);
4457         cancel_work_sync(&priv->watchdog_ba_handle);
4458         if (priv->beacon_skb != NULL)
4459                 dev_kfree_skb(priv->beacon_skb);
4460
4461         /* Stop TX reclaim and RX tasklets.  */
4462         tasklet_disable(&priv->poll_tx_task);
4463         tasklet_disable(&priv->poll_rx_task);
4464
4465         /* Return all skbs to mac80211 */
4466         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4467                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4468 }
4469
4470 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4471
4472 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4473                                struct ieee80211_vif *vif)
4474 {
4475         struct mwl8k_priv *priv = hw->priv;
4476         struct mwl8k_vif *mwl8k_vif;
4477         u32 macids_supported;
4478         int macid, rc;
4479         struct mwl8k_device_info *di;
4480
4481         /*
4482          * Reject interface creation if sniffer mode is active, as
4483          * STA operation is mutually exclusive with hardware sniffer
4484          * mode.  (Sniffer mode is only used on STA firmware.)
4485          */
4486         if (priv->sniffer_enabled) {
4487                 wiphy_info(hw->wiphy,
4488                            "unable to create STA interface because sniffer mode is enabled\n");
4489                 return -EINVAL;
4490         }
4491
4492         di = priv->device_info;
4493         switch (vif->type) {
4494         case NL80211_IFTYPE_AP:
4495                 if (!priv->ap_fw && di->fw_image_ap) {
4496                         /* we must load the ap fw to meet this request */
4497                         if (!list_empty(&priv->vif_list))
4498                                 return -EBUSY;
4499                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4500                         if (rc)
4501                                 return rc;
4502                 }
4503                 macids_supported = priv->ap_macids_supported;
4504                 break;
4505         case NL80211_IFTYPE_STATION:
4506                 if (priv->ap_fw && di->fw_image_sta) {
4507                         /* we must load the sta fw to meet this request */
4508                         if (!list_empty(&priv->vif_list))
4509                                 return -EBUSY;
4510                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4511                         if (rc)
4512                                 return rc;
4513                 }
4514                 macids_supported = priv->sta_macids_supported;
4515                 break;
4516         default:
4517                 return -EINVAL;
4518         }
4519
4520         macid = ffs(macids_supported & ~priv->macids_used);
4521         if (!macid--)
4522                 return -EBUSY;
4523
4524         /* Setup driver private area. */
4525         mwl8k_vif = MWL8K_VIF(vif);
4526         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4527         mwl8k_vif->vif = vif;
4528         mwl8k_vif->macid = macid;
4529         mwl8k_vif->seqno = 0;
4530         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4531         mwl8k_vif->is_hw_crypto_enabled = false;
4532
4533         /* Set the mac address.  */
4534         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4535
4536         if (priv->ap_fw)
4537                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4538
4539         priv->macids_used |= 1 << mwl8k_vif->macid;
4540         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4541
4542         return 0;
4543 }
4544
4545 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4546 {
4547         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4548         if (!priv->macids_used)
4549                 return;
4550
4551         priv->macids_used &= ~(1 << vif->macid);
4552         list_del(&vif->list);
4553 }
4554
4555 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4556                                    struct ieee80211_vif *vif)
4557 {
4558         struct mwl8k_priv *priv = hw->priv;
4559         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4560
4561         if (priv->ap_fw)
4562                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4563
4564         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4565
4566         mwl8k_remove_vif(priv, mwl8k_vif);
4567 }
4568
4569 static void mwl8k_hw_restart_work(struct work_struct *work)
4570 {
4571         struct mwl8k_priv *priv =
4572                 container_of(work, struct mwl8k_priv, fw_reload);
4573         struct ieee80211_hw *hw = priv->hw;
4574         struct mwl8k_device_info *di;
4575         int rc;
4576
4577         /* If some command is waiting for a response, clear it */
4578         if (priv->hostcmd_wait != NULL) {
4579                 complete(priv->hostcmd_wait);
4580                 priv->hostcmd_wait = NULL;
4581         }
4582
4583         priv->hw_restart_owner = current;
4584         di = priv->device_info;
4585         mwl8k_fw_lock(hw);
4586
4587         if (priv->ap_fw)
4588                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4589         else
4590                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4591
4592         if (rc)
4593                 goto fail;
4594
4595         priv->hw_restart_owner = NULL;
4596         priv->hw_restart_in_progress = false;
4597
4598         /*
4599          * This unlock will wake up the queues and
4600          * also opens the command path for other
4601          * commands
4602          */
4603         mwl8k_fw_unlock(hw);
4604
4605         ieee80211_restart_hw(hw);
4606
4607         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4608
4609         return;
4610 fail:
4611         mwl8k_fw_unlock(hw);
4612
4613         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4614 }
4615
4616 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4617 {
4618         struct ieee80211_conf *conf = &hw->conf;
4619         struct mwl8k_priv *priv = hw->priv;
4620         int rc;
4621
4622         if (conf->flags & IEEE80211_CONF_IDLE) {
4623                 mwl8k_cmd_radio_disable(hw);
4624                 return 0;
4625         }
4626
4627         rc = mwl8k_fw_lock(hw);
4628         if (rc)
4629                 return rc;
4630
4631         rc = mwl8k_cmd_radio_enable(hw);
4632         if (rc)
4633                 goto out;
4634
4635         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4636         if (rc)
4637                 goto out;
4638
4639         if (conf->power_level > 18)
4640                 conf->power_level = 18;
4641
4642         if (priv->ap_fw) {
4643
4644                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4645                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4646                         if (rc)
4647                                 goto out;
4648                 }
4649
4650                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4651                 if (rc)
4652                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4653                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4654                 if (rc)
4655                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4656
4657         } else {
4658                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4659                 if (rc)
4660                         goto out;
4661                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4662         }
4663
4664 out:
4665         mwl8k_fw_unlock(hw);
4666
4667         return rc;
4668 }
4669
4670 static void
4671 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4672                            struct ieee80211_bss_conf *info, u32 changed)
4673 {
4674         struct mwl8k_priv *priv = hw->priv;
4675         u32 ap_legacy_rates = 0;
4676         u8 ap_mcs_rates[16];
4677         int rc;
4678
4679         if (mwl8k_fw_lock(hw))
4680                 return;
4681
4682         /*
4683          * No need to capture a beacon if we're no longer associated.
4684          */
4685         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4686                 priv->capture_beacon = false;
4687
4688         /*
4689          * Get the AP's legacy and MCS rates.
4690          */
4691         if (vif->bss_conf.assoc) {
4692                 struct ieee80211_sta *ap;
4693
4694                 rcu_read_lock();
4695
4696                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4697                 if (ap == NULL) {
4698                         rcu_read_unlock();
4699                         goto out;
4700                 }
4701
4702                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4703                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4704                 } else {
4705                         ap_legacy_rates =
4706                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4707                 }
4708                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4709
4710                 rcu_read_unlock();
4711         }
4712
4713         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4714                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4715                 if (rc)
4716                         goto out;
4717
4718                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4719                 if (rc)
4720                         goto out;
4721         }
4722
4723         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4724                 rc = mwl8k_set_radio_preamble(hw,
4725                                 vif->bss_conf.use_short_preamble);
4726                 if (rc)
4727                         goto out;
4728         }
4729
4730         if (changed & BSS_CHANGED_ERP_SLOT) {
4731                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4732                 if (rc)
4733                         goto out;
4734         }
4735
4736         if (vif->bss_conf.assoc &&
4737             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4738                         BSS_CHANGED_HT))) {
4739                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4740                 if (rc)
4741                         goto out;
4742         }
4743
4744         if (vif->bss_conf.assoc &&
4745             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4746                 /*
4747                  * Finalize the join.  Tell rx handler to process
4748                  * next beacon from our BSSID.
4749                  */
4750                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4751                 priv->capture_beacon = true;
4752         }
4753
4754 out:
4755         mwl8k_fw_unlock(hw);
4756 }
4757
4758 static void
4759 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4760                           struct ieee80211_bss_conf *info, u32 changed)
4761 {
4762         int rc;
4763
4764         if (mwl8k_fw_lock(hw))
4765                 return;
4766
4767         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4768                 rc = mwl8k_set_radio_preamble(hw,
4769                                 vif->bss_conf.use_short_preamble);
4770                 if (rc)
4771                         goto out;
4772         }
4773
4774         if (changed & BSS_CHANGED_BASIC_RATES) {
4775                 int idx;
4776                 int rate;
4777
4778                 /*
4779                  * Use lowest supported basic rate for multicasts
4780                  * and management frames (such as probe responses --
4781                  * beacons will always go out at 1 Mb/s).
4782                  */
4783                 idx = ffs(vif->bss_conf.basic_rates);
4784                 if (idx)
4785                         idx--;
4786
4787                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4788                         rate = mwl8k_rates_24[idx].hw_value;
4789                 else
4790                         rate = mwl8k_rates_50[idx].hw_value;
4791
4792                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4793         }
4794
4795         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4796                 struct sk_buff *skb;
4797
4798                 skb = ieee80211_beacon_get(hw, vif);
4799                 if (skb != NULL) {
4800                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4801                         kfree_skb(skb);
4802                 }
4803         }
4804
4805         if (changed & BSS_CHANGED_BEACON_ENABLED)
4806                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4807
4808 out:
4809         mwl8k_fw_unlock(hw);
4810 }
4811
4812 static void
4813 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4814                        struct ieee80211_bss_conf *info, u32 changed)
4815 {
4816         struct mwl8k_priv *priv = hw->priv;
4817
4818         if (!priv->ap_fw)
4819                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4820         else
4821                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4822 }
4823
4824 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4825                                    struct netdev_hw_addr_list *mc_list)
4826 {
4827         struct mwl8k_cmd_pkt *cmd;
4828
4829         /*
4830          * Synthesize and return a command packet that programs the
4831          * hardware multicast address filter.  At this point we don't
4832          * know whether FIF_ALLMULTI is being requested, but if it is,
4833          * we'll end up throwing this packet away and creating a new
4834          * one in mwl8k_configure_filter().
4835          */
4836         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4837
4838         return (unsigned long)cmd;
4839 }
4840
4841 static int
4842 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4843                                unsigned int changed_flags,
4844                                unsigned int *total_flags)
4845 {
4846         struct mwl8k_priv *priv = hw->priv;
4847
4848         /*
4849          * Hardware sniffer mode is mutually exclusive with STA
4850          * operation, so refuse to enable sniffer mode if a STA
4851          * interface is active.
4852          */
4853         if (!list_empty(&priv->vif_list)) {
4854                 if (net_ratelimit())
4855                         wiphy_info(hw->wiphy,
4856                                    "not enabling sniffer mode because STA interface is active\n");
4857                 return 0;
4858         }
4859
4860         if (!priv->sniffer_enabled) {
4861                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4862                         return 0;
4863                 priv->sniffer_enabled = true;
4864         }
4865
4866         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4867                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4868                         FIF_OTHER_BSS;
4869
4870         return 1;
4871 }
4872
4873 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4874 {
4875         if (!list_empty(&priv->vif_list))
4876                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4877
4878         return NULL;
4879 }
4880
4881 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4882                                    unsigned int changed_flags,
4883                                    unsigned int *total_flags,
4884                                    u64 multicast)
4885 {
4886         struct mwl8k_priv *priv = hw->priv;
4887         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4888
4889         /*
4890          * AP firmware doesn't allow fine-grained control over
4891          * the receive filter.
4892          */
4893         if (priv->ap_fw) {
4894                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4895                 kfree(cmd);
4896                 return;
4897         }
4898
4899         /*
4900          * Enable hardware sniffer mode if FIF_CONTROL or
4901          * FIF_OTHER_BSS is requested.
4902          */
4903         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4904             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4905                 kfree(cmd);
4906                 return;
4907         }
4908
4909         /* Clear unsupported feature flags */
4910         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4911
4912         if (mwl8k_fw_lock(hw)) {
4913                 kfree(cmd);
4914                 return;
4915         }
4916
4917         if (priv->sniffer_enabled) {
4918                 mwl8k_cmd_enable_sniffer(hw, 0);
4919                 priv->sniffer_enabled = false;
4920         }
4921
4922         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4923                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4924                         /*
4925                          * Disable the BSS filter.
4926                          */
4927                         mwl8k_cmd_set_pre_scan(hw);
4928                 } else {
4929                         struct mwl8k_vif *mwl8k_vif;
4930                         const u8 *bssid;
4931
4932                         /*
4933                          * Enable the BSS filter.
4934                          *
4935                          * If there is an active STA interface, use that
4936                          * interface's BSSID, otherwise use a dummy one
4937                          * (where the OUI part needs to be nonzero for
4938                          * the BSSID to be accepted by POST_SCAN).
4939                          */
4940                         mwl8k_vif = mwl8k_first_vif(priv);
4941                         if (mwl8k_vif != NULL)
4942                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4943                         else
4944                                 bssid = "\x01\x00\x00\x00\x00\x00";
4945
4946                         mwl8k_cmd_set_post_scan(hw, bssid);
4947                 }
4948         }
4949
4950         /*
4951          * If FIF_ALLMULTI is being requested, throw away the command
4952          * packet that ->prepare_multicast() built and replace it with
4953          * a command packet that enables reception of all multicast
4954          * packets.
4955          */
4956         if (*total_flags & FIF_ALLMULTI) {
4957                 kfree(cmd);
4958                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4959         }
4960
4961         if (cmd != NULL) {
4962                 mwl8k_post_cmd(hw, cmd);
4963                 kfree(cmd);
4964         }
4965
4966         mwl8k_fw_unlock(hw);
4967 }
4968
4969 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4970 {
4971         return mwl8k_cmd_set_rts_threshold(hw, value);
4972 }
4973
4974 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4975                             struct ieee80211_vif *vif,
4976                             struct ieee80211_sta *sta)
4977 {
4978         struct mwl8k_priv *priv = hw->priv;
4979
4980         if (priv->ap_fw)
4981                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4982         else
4983                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4984 }
4985
4986 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4987                          struct ieee80211_vif *vif,
4988                          struct ieee80211_sta *sta)
4989 {
4990         struct mwl8k_priv *priv = hw->priv;
4991         int ret;
4992         int i;
4993         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4994         struct ieee80211_key_conf *key;
4995
4996         if (!priv->ap_fw) {
4997                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4998                 if (ret >= 0) {
4999                         MWL8K_STA(sta)->peer_id = ret;
5000                         if (sta->ht_cap.ht_supported)
5001                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5002                         ret = 0;
5003                 }
5004
5005         } else {
5006                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5007         }
5008
5009         for (i = 0; i < NUM_WEP_KEYS; i++) {
5010                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5011                 if (mwl8k_vif->wep_key_conf[i].enabled)
5012                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5013         }
5014         return ret;
5015 }
5016
5017 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5018                          struct ieee80211_vif *vif, u16 queue,
5019                          const struct ieee80211_tx_queue_params *params)
5020 {
5021         struct mwl8k_priv *priv = hw->priv;
5022         int rc;
5023
5024         rc = mwl8k_fw_lock(hw);
5025         if (!rc) {
5026                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5027                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5028
5029                 if (!priv->wmm_enabled)
5030                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5031
5032                 if (!rc) {
5033                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5034                         rc = mwl8k_cmd_set_edca_params(hw, q,
5035                                                        params->cw_min,
5036                                                        params->cw_max,
5037                                                        params->aifs,
5038                                                        params->txop);
5039                 }
5040
5041                 mwl8k_fw_unlock(hw);
5042         }
5043
5044         return rc;
5045 }
5046
5047 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5048                            struct ieee80211_low_level_stats *stats)
5049 {
5050         return mwl8k_cmd_get_stat(hw, stats);
5051 }
5052
5053 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5054                                 struct survey_info *survey)
5055 {
5056         struct mwl8k_priv *priv = hw->priv;
5057         struct ieee80211_conf *conf = &hw->conf;
5058
5059         if (idx != 0)
5060                 return -ENOENT;
5061
5062         survey->channel = conf->channel;
5063         survey->filled = SURVEY_INFO_NOISE_DBM;
5064         survey->noise = priv->noise;
5065
5066         return 0;
5067 }
5068
5069 #define MAX_AMPDU_ATTEMPTS 5
5070
5071 static int
5072 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5073                    enum ieee80211_ampdu_mlme_action action,
5074                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5075                    u8 buf_size)
5076 {
5077
5078         int i, rc = 0;
5079         struct mwl8k_priv *priv = hw->priv;
5080         struct mwl8k_ampdu_stream *stream;
5081         u8 *addr = sta->addr;
5082
5083         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5084                 return -ENOTSUPP;
5085
5086         spin_lock(&priv->stream_lock);
5087         stream = mwl8k_lookup_stream(hw, addr, tid);
5088
5089         switch (action) {
5090         case IEEE80211_AMPDU_RX_START:
5091         case IEEE80211_AMPDU_RX_STOP:
5092                 break;
5093         case IEEE80211_AMPDU_TX_START:
5094                 /* By the time we get here the hw queues may contain outgoing
5095                  * packets for this RA/TID that are not part of this BA
5096                  * session.  The hw will assign sequence numbers to these
5097                  * packets as they go out.  So if we query the hw for its next
5098                  * sequence number and use that for the SSN here, it may end up
5099                  * being wrong, which will lead to sequence number mismatch at
5100                  * the recipient.  To avoid this, we reset the sequence number
5101                  * to O for the first MPDU in this BA stream.
5102                  */
5103                 *ssn = 0;
5104                 if (stream == NULL) {
5105                         /* This means that somebody outside this driver called
5106                          * ieee80211_start_tx_ba_session.  This is unexpected
5107                          * because we do our own rate control.  Just warn and
5108                          * move on.
5109                          */
5110                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5111                                    "Proceeding anyway.\n", __func__);
5112                         stream = mwl8k_add_stream(hw, sta, tid);
5113                 }
5114                 if (stream == NULL) {
5115                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5116                         rc = -EBUSY;
5117                         break;
5118                 }
5119                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5120
5121                 /* Release the lock before we do the time consuming stuff */
5122                 spin_unlock(&priv->stream_lock);
5123                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5124                         rc = mwl8k_check_ba(hw, stream);
5125
5126                         /* If HW restart is in progress mwl8k_post_cmd will
5127                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5128                          * such cases
5129                          */
5130                         if (!rc || rc == -EBUSY)
5131                                 break;
5132                         /*
5133                          * HW queues take time to be flushed, give them
5134                          * sufficient time
5135                          */
5136
5137                         msleep(1000);
5138                 }
5139                 spin_lock(&priv->stream_lock);
5140                 if (rc) {
5141                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5142                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5143                         mwl8k_remove_stream(hw, stream);
5144                         rc = -EBUSY;
5145                         break;
5146                 }
5147                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5148                 break;
5149         case IEEE80211_AMPDU_TX_STOP:
5150                 if (stream) {
5151                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5152                                 spin_unlock(&priv->stream_lock);
5153                                 mwl8k_destroy_ba(hw, stream);
5154                                 spin_lock(&priv->stream_lock);
5155                         }
5156                         mwl8k_remove_stream(hw, stream);
5157                 }
5158                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5159                 break;
5160         case IEEE80211_AMPDU_TX_OPERATIONAL:
5161                 BUG_ON(stream == NULL);
5162                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5163                 spin_unlock(&priv->stream_lock);
5164                 rc = mwl8k_create_ba(hw, stream, buf_size);
5165                 spin_lock(&priv->stream_lock);
5166                 if (!rc)
5167                         stream->state = AMPDU_STREAM_ACTIVE;
5168                 else {
5169                         spin_unlock(&priv->stream_lock);
5170                         mwl8k_destroy_ba(hw, stream);
5171                         spin_lock(&priv->stream_lock);
5172                         wiphy_debug(hw->wiphy,
5173                                 "Failed adding stream for sta %pM tid %d\n",
5174                                 addr, tid);
5175                         mwl8k_remove_stream(hw, stream);
5176                 }
5177                 break;
5178
5179         default:
5180                 rc = -ENOTSUPP;
5181         }
5182
5183         spin_unlock(&priv->stream_lock);
5184         return rc;
5185 }
5186
5187 static const struct ieee80211_ops mwl8k_ops = {
5188         .tx                     = mwl8k_tx,
5189         .start                  = mwl8k_start,
5190         .stop                   = mwl8k_stop,
5191         .add_interface          = mwl8k_add_interface,
5192         .remove_interface       = mwl8k_remove_interface,
5193         .config                 = mwl8k_config,
5194         .bss_info_changed       = mwl8k_bss_info_changed,
5195         .prepare_multicast      = mwl8k_prepare_multicast,
5196         .configure_filter       = mwl8k_configure_filter,
5197         .set_key                = mwl8k_set_key,
5198         .set_rts_threshold      = mwl8k_set_rts_threshold,
5199         .sta_add                = mwl8k_sta_add,
5200         .sta_remove             = mwl8k_sta_remove,
5201         .conf_tx                = mwl8k_conf_tx,
5202         .get_stats              = mwl8k_get_stats,
5203         .get_survey             = mwl8k_get_survey,
5204         .ampdu_action           = mwl8k_ampdu_action,
5205 };
5206
5207 static void mwl8k_finalize_join_worker(struct work_struct *work)
5208 {
5209         struct mwl8k_priv *priv =
5210                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5211         struct sk_buff *skb = priv->beacon_skb;
5212         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5213         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5214         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5215                                          mgmt->u.beacon.variable, len);
5216         int dtim_period = 1;
5217
5218         if (tim && tim[1] >= 2)
5219                 dtim_period = tim[3];
5220
5221         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5222
5223         dev_kfree_skb(skb);
5224         priv->beacon_skb = NULL;
5225 }
5226
5227 enum {
5228         MWL8363 = 0,
5229         MWL8687,
5230         MWL8366,
5231 };
5232
5233 #define MWL8K_8366_AP_FW_API 2
5234 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5235 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5236
5237 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5238         [MWL8363] = {
5239                 .part_name      = "88w8363",
5240                 .helper_image   = "mwl8k/helper_8363.fw",
5241                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5242         },
5243         [MWL8687] = {
5244                 .part_name      = "88w8687",
5245                 .helper_image   = "mwl8k/helper_8687.fw",
5246                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5247         },
5248         [MWL8366] = {
5249                 .part_name      = "88w8366",
5250                 .helper_image   = "mwl8k/helper_8366.fw",
5251                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5252                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5253                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5254                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5255         },
5256 };
5257
5258 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5259 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5260 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5261 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5262 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5263 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5264 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5265
5266 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5267         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5268         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5269         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5270         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5271         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5272         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5273         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5274         { },
5275 };
5276 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5277
5278 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5279 {
5280         int rc;
5281         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5282                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5283                priv->fw_pref, priv->fw_alt);
5284         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5285         if (rc) {
5286                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5287                        pci_name(priv->pdev), priv->fw_alt);
5288                 return rc;
5289         }
5290         return 0;
5291 }
5292
5293 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5294 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5295 {
5296         struct mwl8k_priv *priv = context;
5297         struct mwl8k_device_info *di = priv->device_info;
5298         int rc;
5299
5300         switch (priv->fw_state) {
5301         case FW_STATE_INIT:
5302                 if (!fw) {
5303                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5304                                pci_name(priv->pdev), di->helper_image);
5305                         goto fail;
5306                 }
5307                 priv->fw_helper = fw;
5308                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5309                                       true);
5310                 if (rc && priv->fw_alt) {
5311                         rc = mwl8k_request_alt_fw(priv);
5312                         if (rc)
5313                                 goto fail;
5314                         priv->fw_state = FW_STATE_LOADING_ALT;
5315                 } else if (rc)
5316                         goto fail;
5317                 else
5318                         priv->fw_state = FW_STATE_LOADING_PREF;
5319                 break;
5320
5321         case FW_STATE_LOADING_PREF:
5322                 if (!fw) {
5323                         if (priv->fw_alt) {
5324                                 rc = mwl8k_request_alt_fw(priv);
5325                                 if (rc)
5326                                         goto fail;
5327                                 priv->fw_state = FW_STATE_LOADING_ALT;
5328                         } else
5329                                 goto fail;
5330                 } else {
5331                         priv->fw_ucode = fw;
5332                         rc = mwl8k_firmware_load_success(priv);
5333                         if (rc)
5334                                 goto fail;
5335                         else
5336                                 complete(&priv->firmware_loading_complete);
5337                 }
5338                 break;
5339
5340         case FW_STATE_LOADING_ALT:
5341                 if (!fw) {
5342                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5343                                pci_name(priv->pdev), di->helper_image);
5344                         goto fail;
5345                 }
5346                 priv->fw_ucode = fw;
5347                 rc = mwl8k_firmware_load_success(priv);
5348                 if (rc)
5349                         goto fail;
5350                 else
5351                         complete(&priv->firmware_loading_complete);
5352                 break;
5353
5354         default:
5355                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5356                        MWL8K_NAME, priv->fw_state);
5357                 BUG_ON(1);
5358         }
5359
5360         return;
5361
5362 fail:
5363         priv->fw_state = FW_STATE_ERROR;
5364         complete(&priv->firmware_loading_complete);
5365         device_release_driver(&priv->pdev->dev);
5366         mwl8k_release_firmware(priv);
5367 }
5368
5369 #define MAX_RESTART_ATTEMPTS 1
5370 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5371                                bool nowait)
5372 {
5373         struct mwl8k_priv *priv = hw->priv;
5374         int rc;
5375         int count = MAX_RESTART_ATTEMPTS;
5376
5377 retry:
5378         /* Reset firmware and hardware */
5379         mwl8k_hw_reset(priv);
5380
5381         /* Ask userland hotplug daemon for the device firmware */
5382         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5383         if (rc) {
5384                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5385                 return rc;
5386         }
5387
5388         if (nowait)
5389                 return rc;
5390
5391         /* Load firmware into hardware */
5392         rc = mwl8k_load_firmware(hw);
5393         if (rc)
5394                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5395
5396         /* Reclaim memory once firmware is successfully loaded */
5397         mwl8k_release_firmware(priv);
5398
5399         if (rc && count) {
5400                 /* FW did not start successfully;
5401                  * lets try one more time
5402                  */
5403                 count--;
5404                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5405                 msleep(20);
5406                 goto retry;
5407         }
5408
5409         return rc;
5410 }
5411
5412 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5413 {
5414         struct mwl8k_priv *priv = hw->priv;
5415         int rc = 0;
5416         int i;
5417
5418         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5419                 rc = mwl8k_txq_init(hw, i);
5420                 if (rc)
5421                         break;
5422                 if (priv->ap_fw)
5423                         iowrite32(priv->txq[i].txd_dma,
5424                                   priv->sram + priv->txq_offset[i]);
5425         }
5426         return rc;
5427 }
5428
5429 /* initialize hw after successfully loading a firmware image */
5430 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5431 {
5432         struct mwl8k_priv *priv = hw->priv;
5433         int rc = 0;
5434         int i;
5435
5436         if (priv->ap_fw) {
5437                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5438                 if (priv->rxd_ops == NULL) {
5439                         wiphy_err(hw->wiphy,
5440                                   "Driver does not have AP firmware image support for this hardware\n");
5441                         goto err_stop_firmware;
5442                 }
5443         } else {
5444                 priv->rxd_ops = &rxd_sta_ops;
5445         }
5446
5447         priv->sniffer_enabled = false;
5448         priv->wmm_enabled = false;
5449         priv->pending_tx_pkts = 0;
5450
5451         rc = mwl8k_rxq_init(hw, 0);
5452         if (rc)
5453                 goto err_stop_firmware;
5454         rxq_refill(hw, 0, INT_MAX);
5455
5456         /* For the sta firmware, we need to know the dma addresses of tx queues
5457          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5458          * prior to issuing this command.  But for the AP case, we learn the
5459          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5460          * case we must initialize the tx queues after.
5461          */
5462         priv->num_ampdu_queues = 0;
5463         if (!priv->ap_fw) {
5464                 rc = mwl8k_init_txqs(hw);
5465                 if (rc)
5466                         goto err_free_queues;
5467         }
5468
5469         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5470         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5471         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5472                   MWL8K_A2H_INT_BA_WATCHDOG,
5473                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5474         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5475                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5476
5477         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5478                          IRQF_SHARED, MWL8K_NAME, hw);
5479         if (rc) {
5480                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5481                 goto err_free_queues;
5482         }
5483
5484         /*
5485          * When hw restart is requested,
5486          * mac80211 will take care of clearing
5487          * the ampdu streams, so do not clear
5488          * the ampdu state here
5489          */
5490         if (!priv->hw_restart_in_progress)
5491                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5492
5493         /*
5494          * Temporarily enable interrupts.  Initial firmware host
5495          * commands use interrupts and avoid polling.  Disable
5496          * interrupts when done.
5497          */
5498         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5499
5500         /* Get config data, mac addrs etc */
5501         if (priv->ap_fw) {
5502                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5503                 if (!rc)
5504                         rc = mwl8k_init_txqs(hw);
5505                 if (!rc)
5506                         rc = mwl8k_cmd_set_hw_spec(hw);
5507         } else {
5508                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5509         }
5510         if (rc) {
5511                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5512                 goto err_free_irq;
5513         }
5514
5515         /* Turn radio off */
5516         rc = mwl8k_cmd_radio_disable(hw);
5517         if (rc) {
5518                 wiphy_err(hw->wiphy, "Cannot disable\n");
5519                 goto err_free_irq;
5520         }
5521
5522         /* Clear MAC address */
5523         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5524         if (rc) {
5525                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5526                 goto err_free_irq;
5527         }
5528
5529         /* Disable interrupts */
5530         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5531         free_irq(priv->pdev->irq, hw);
5532
5533         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5534                    priv->device_info->part_name,
5535                    priv->hw_rev, hw->wiphy->perm_addr,
5536                    priv->ap_fw ? "AP" : "STA",
5537                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5538                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5539
5540         return 0;
5541
5542 err_free_irq:
5543         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5544         free_irq(priv->pdev->irq, hw);
5545
5546 err_free_queues:
5547         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5548                 mwl8k_txq_deinit(hw, i);
5549         mwl8k_rxq_deinit(hw, 0);
5550
5551 err_stop_firmware:
5552         mwl8k_hw_reset(priv);
5553
5554         return rc;
5555 }
5556
5557 /*
5558  * invoke mwl8k_reload_firmware to change the firmware image after the device
5559  * has already been registered
5560  */
5561 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5562 {
5563         int i, rc = 0;
5564         struct mwl8k_priv *priv = hw->priv;
5565         struct mwl8k_vif *vif, *tmp_vif;
5566
5567         mwl8k_stop(hw);
5568         mwl8k_rxq_deinit(hw, 0);
5569
5570         /*
5571          * All the existing interfaces are re-added by the ieee80211_reconfig;
5572          * which means driver should remove existing interfaces before calling
5573          * ieee80211_restart_hw
5574          */
5575         if (priv->hw_restart_in_progress)
5576                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5577                         mwl8k_remove_vif(priv, vif);
5578
5579         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5580                 mwl8k_txq_deinit(hw, i);
5581
5582         rc = mwl8k_init_firmware(hw, fw_image, false);
5583         if (rc)
5584                 goto fail;
5585
5586         rc = mwl8k_probe_hw(hw);
5587         if (rc)
5588                 goto fail;
5589
5590         if (priv->hw_restart_in_progress)
5591                 return rc;
5592
5593         rc = mwl8k_start(hw);
5594         if (rc)
5595                 goto fail;
5596
5597         rc = mwl8k_config(hw, ~0);
5598         if (rc)
5599                 goto fail;
5600
5601         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5602                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5603                 if (rc)
5604                         goto fail;
5605         }
5606
5607         return rc;
5608
5609 fail:
5610         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5611         return rc;
5612 }
5613
5614 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5615 {
5616         struct ieee80211_hw *hw = priv->hw;
5617         int i, rc;
5618
5619         rc = mwl8k_load_firmware(hw);
5620         mwl8k_release_firmware(priv);
5621         if (rc) {
5622                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5623                 return rc;
5624         }
5625
5626         /*
5627          * Extra headroom is the size of the required DMA header
5628          * minus the size of the smallest 802.11 frame (CTS frame).
5629          */
5630         hw->extra_tx_headroom =
5631                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5632
5633         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5634
5635         hw->channel_change_time = 10;
5636
5637         hw->queues = MWL8K_TX_WMM_QUEUES;
5638
5639         /* Set rssi values to dBm */
5640         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5641
5642         /*
5643          * Ask mac80211 to not to trigger PS mode
5644          * based on PM bit of incoming frames.
5645          */
5646         if (priv->ap_fw)
5647                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5648
5649         hw->vif_data_size = sizeof(struct mwl8k_vif);
5650         hw->sta_data_size = sizeof(struct mwl8k_sta);
5651
5652         priv->macids_used = 0;
5653         INIT_LIST_HEAD(&priv->vif_list);
5654
5655         /* Set default radio state and preamble */
5656         priv->radio_on = false;
5657         priv->radio_short_preamble = false;
5658
5659         /* Finalize join worker */
5660         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5661         /* Handle watchdog ba events */
5662         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5663         /* To reload the firmware if it crashes */
5664         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5665
5666         /* TX reclaim and RX tasklets.  */
5667         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5668         tasklet_disable(&priv->poll_tx_task);
5669         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5670         tasklet_disable(&priv->poll_rx_task);
5671
5672         /* Power management cookie */
5673         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5674         if (priv->cookie == NULL)
5675                 return -ENOMEM;
5676
5677         mutex_init(&priv->fw_mutex);
5678         priv->fw_mutex_owner = NULL;
5679         priv->fw_mutex_depth = 0;
5680         priv->hostcmd_wait = NULL;
5681
5682         spin_lock_init(&priv->tx_lock);
5683
5684         spin_lock_init(&priv->stream_lock);
5685
5686         priv->tx_wait = NULL;
5687
5688         rc = mwl8k_probe_hw(hw);
5689         if (rc)
5690                 goto err_free_cookie;
5691
5692         hw->wiphy->interface_modes = 0;
5693         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5694                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5695         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5696                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5697
5698         rc = ieee80211_register_hw(hw);
5699         if (rc) {
5700                 wiphy_err(hw->wiphy, "Cannot register device\n");
5701                 goto err_unprobe_hw;
5702         }
5703
5704         return 0;
5705
5706 err_unprobe_hw:
5707         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5708                 mwl8k_txq_deinit(hw, i);
5709         mwl8k_rxq_deinit(hw, 0);
5710
5711 err_free_cookie:
5712         if (priv->cookie != NULL)
5713                 pci_free_consistent(priv->pdev, 4,
5714                                 priv->cookie, priv->cookie_dma);
5715
5716         return rc;
5717 }
5718 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5719                                  const struct pci_device_id *id)
5720 {
5721         static int printed_version;
5722         struct ieee80211_hw *hw;
5723         struct mwl8k_priv *priv;
5724         struct mwl8k_device_info *di;
5725         int rc;
5726
5727         if (!printed_version) {
5728                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5729                 printed_version = 1;
5730         }
5731
5732
5733         rc = pci_enable_device(pdev);
5734         if (rc) {
5735                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5736                        MWL8K_NAME);
5737                 return rc;
5738         }
5739
5740         rc = pci_request_regions(pdev, MWL8K_NAME);
5741         if (rc) {
5742                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5743                        MWL8K_NAME);
5744                 goto err_disable_device;
5745         }
5746
5747         pci_set_master(pdev);
5748
5749
5750         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5751         if (hw == NULL) {
5752                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5753                 rc = -ENOMEM;
5754                 goto err_free_reg;
5755         }
5756
5757         SET_IEEE80211_DEV(hw, &pdev->dev);
5758         pci_set_drvdata(pdev, hw);
5759
5760         priv = hw->priv;
5761         priv->hw = hw;
5762         priv->pdev = pdev;
5763         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5764
5765
5766         priv->sram = pci_iomap(pdev, 0, 0x10000);
5767         if (priv->sram == NULL) {
5768                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5769                 goto err_iounmap;
5770         }
5771
5772         /*
5773          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5774          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5775          */
5776         priv->regs = pci_iomap(pdev, 1, 0x10000);
5777         if (priv->regs == NULL) {
5778                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5779                 if (priv->regs == NULL) {
5780                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5781                         goto err_iounmap;
5782                 }
5783         }
5784
5785         /*
5786          * Choose the initial fw image depending on user input.  If a second
5787          * image is available, make it the alternative image that will be
5788          * loaded if the first one fails.
5789          */
5790         init_completion(&priv->firmware_loading_complete);
5791         di = priv->device_info;
5792         if (ap_mode_default && di->fw_image_ap) {
5793                 priv->fw_pref = di->fw_image_ap;
5794                 priv->fw_alt = di->fw_image_sta;
5795         } else if (!ap_mode_default && di->fw_image_sta) {
5796                 priv->fw_pref = di->fw_image_sta;
5797                 priv->fw_alt = di->fw_image_ap;
5798         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5799                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5800                 priv->fw_pref = di->fw_image_sta;
5801         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5802                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5803                 priv->fw_pref = di->fw_image_ap;
5804         }
5805         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5806         if (rc)
5807                 goto err_stop_firmware;
5808
5809         priv->hw_restart_in_progress = false;
5810
5811         return rc;
5812
5813 err_stop_firmware:
5814         mwl8k_hw_reset(priv);
5815
5816 err_iounmap:
5817         if (priv->regs != NULL)
5818                 pci_iounmap(pdev, priv->regs);
5819
5820         if (priv->sram != NULL)
5821                 pci_iounmap(pdev, priv->sram);
5822
5823         pci_set_drvdata(pdev, NULL);
5824         ieee80211_free_hw(hw);
5825
5826 err_free_reg:
5827         pci_release_regions(pdev);
5828
5829 err_disable_device:
5830         pci_disable_device(pdev);
5831
5832         return rc;
5833 }
5834
5835 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5836 {
5837         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5838 }
5839
5840 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5841 {
5842         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5843         struct mwl8k_priv *priv;
5844         int i;
5845
5846         if (hw == NULL)
5847                 return;
5848         priv = hw->priv;
5849
5850         wait_for_completion(&priv->firmware_loading_complete);
5851
5852         if (priv->fw_state == FW_STATE_ERROR) {
5853                 mwl8k_hw_reset(priv);
5854                 goto unmap;
5855         }
5856
5857         ieee80211_stop_queues(hw);
5858
5859         ieee80211_unregister_hw(hw);
5860
5861         /* Remove TX reclaim and RX tasklets.  */
5862         tasklet_kill(&priv->poll_tx_task);
5863         tasklet_kill(&priv->poll_rx_task);
5864
5865         /* Stop hardware */
5866         mwl8k_hw_reset(priv);
5867
5868         /* Return all skbs to mac80211 */
5869         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5870                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5871
5872         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5873                 mwl8k_txq_deinit(hw, i);
5874
5875         mwl8k_rxq_deinit(hw, 0);
5876
5877         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5878
5879 unmap:
5880         pci_iounmap(pdev, priv->regs);
5881         pci_iounmap(pdev, priv->sram);
5882         pci_set_drvdata(pdev, NULL);
5883         ieee80211_free_hw(hw);
5884         pci_release_regions(pdev);
5885         pci_disable_device(pdev);
5886 }
5887
5888 static struct pci_driver mwl8k_driver = {
5889         .name           = MWL8K_NAME,
5890         .id_table       = mwl8k_pci_id_table,
5891         .probe          = mwl8k_probe,
5892         .remove         = __devexit_p(mwl8k_remove),
5893         .shutdown       = __devexit_p(mwl8k_shutdown),
5894 };
5895
5896 static int __init mwl8k_init(void)
5897 {
5898         return pci_register_driver(&mwl8k_driver);
5899 }
5900
5901 static void __exit mwl8k_exit(void)
5902 {
5903         pci_unregister_driver(&mwl8k_driver);
5904 }
5905
5906 module_init(mwl8k_init);
5907 module_exit(mwl8k_exit);
5908
5909 MODULE_DESCRIPTION(MWL8K_DESC);
5910 MODULE_VERSION(MWL8K_VERSION);
5911 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5912 MODULE_LICENSE("GPL");