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_BSS_START             0x1100          /* per-vif */
 406 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 407 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 408 #define MWL8K_CMD_UPDATE_STADB          0x1123
 409 #define MWL8K_CMD_BASTREAM              0x1125
 410
 411 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 412 {
 413         u16 command = le16_to_cpu(cmd);
 414
 415 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 416                                         snprintf(buf, bufsize, "%s", #x);\
 417                                         return buf;\
 418                                         } while (0)
 419         switch (command & ~0x8000) {
 420                 MWL8K_CMDNAME(CODE_DNLD);
 421                 MWL8K_CMDNAME(GET_HW_SPEC);
 422                 MWL8K_CMDNAME(SET_HW_SPEC);
 423                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 424                 MWL8K_CMDNAME(GET_STAT);
 425                 MWL8K_CMDNAME(RADIO_CONTROL);
 426                 MWL8K_CMDNAME(RF_TX_POWER);
 427                 MWL8K_CMDNAME(TX_POWER);
 428                 MWL8K_CMDNAME(RF_ANTENNA);
 429                 MWL8K_CMDNAME(SET_BEACON);
 430                 MWL8K_CMDNAME(SET_PRE_SCAN);
 431                 MWL8K_CMDNAME(SET_POST_SCAN);
 432                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 433                 MWL8K_CMDNAME(SET_AID);
 434                 MWL8K_CMDNAME(SET_RATE);
 435                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 436                 MWL8K_CMDNAME(RTS_THRESHOLD);
 437                 MWL8K_CMDNAME(SET_SLOT);
 438                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 439                 MWL8K_CMDNAME(SET_WMM_MODE);
 440                 MWL8K_CMDNAME(MIMO_CONFIG);
 441                 MWL8K_CMDNAME(USE_FIXED_RATE);
 442                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 443                 MWL8K_CMDNAME(SET_MAC_ADDR);
 444                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 445                 MWL8K_CMDNAME(BSS_START);
 446                 MWL8K_CMDNAME(SET_NEW_STN);
 447                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 448                 MWL8K_CMDNAME(UPDATE_STADB);
 449                 MWL8K_CMDNAME(BASTREAM);
 450                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 451         default:
 452                 snprintf(buf, bufsize, "0x%x", cmd);
 453         }
 454 #undef MWL8K_CMDNAME
 455
 456         return buf;
 457 }
 458
 459 /* Hardware and firmware reset */
 460 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 461 {
 462         iowrite32(MWL8K_H2A_INT_RESET,
 463                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 464         iowrite32(MWL8K_H2A_INT_RESET,
 465                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 466         msleep(20);
 467 }
 468
 469 /* Release fw image */
 470 static void mwl8k_release_fw(const struct firmware **fw)
 471 {
 472         if (*fw == NULL)
 473                 return;
 474         release_firmware(*fw);
 475         *fw = NULL;
 476 }
 477
 478 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 479 {
 480         mwl8k_release_fw(&priv->fw_ucode);
 481         mwl8k_release_fw(&priv->fw_helper);
 482 }
 483
 484 /* states for asynchronous f/w loading */
 485 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 486 enum {
 487         FW_STATE_INIT = 0,
 488         FW_STATE_LOADING_PREF,
 489         FW_STATE_LOADING_ALT,
 490         FW_STATE_ERROR,
 491 };
 492
 493 /* Request fw image */
 494 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 495                             const char *fname, const struct firmware **fw,
 496                             bool nowait)
 497 {
 498         /* release current image */
 499         if (*fw != NULL)
 500                 mwl8k_release_fw(fw);
 501
 502         if (nowait)
 503                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 504                                                &priv->pdev->dev, GFP_KERNEL,
 505                                                priv, mwl8k_fw_state_machine);
 506         else
 507                 return request_firmware(fw, fname, &priv->pdev->dev);
 508 }
 509
 510 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 511                                   bool nowait)
 512 {
 513         struct mwl8k_device_info *di = priv->device_info;
 514         int rc;
 515
 516         if (di->helper_image != NULL) {
 517                 if (nowait)
 518                         rc = mwl8k_request_fw(priv, di->helper_image,
 519                                               &priv->fw_helper, true);
 520                 else
 521                         rc = mwl8k_request_fw(priv, di->helper_image,
 522                                               &priv->fw_helper, false);
 523                 if (rc)
 524                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 525                                pci_name(priv->pdev), di->helper_image);
 526
 527                 if (rc || nowait)
 528                         return rc;
 529         }
 530
 531         if (nowait) {
 532                 /*
 533                  * if we get here, no helper image is needed.  Skip the
 534                  * FW_STATE_INIT state.
 535                  */
 536                 priv->fw_state = FW_STATE_LOADING_PREF;
 537                 rc = mwl8k_request_fw(priv, fw_image,
 538                                       &priv->fw_ucode,
 539                                       true);
 540         } else
 541                 rc = mwl8k_request_fw(priv, fw_image,
 542                                       &priv->fw_ucode, false);
 543         if (rc) {
 544                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 545                        pci_name(priv->pdev), fw_image);
 546                 mwl8k_release_fw(&priv->fw_helper);
 547                 return rc;
 548         }
 549
 550         return 0;
 551 }
 552
 553 struct mwl8k_cmd_pkt {
 554         __le16  code;
 555         __le16  length;
 556         __u8    seq_num;
 557         __u8    macid;
 558         __le16  result;
 559         char    payload[0];
 560 } __packed;
 561
 562 /*
 563  * Firmware loading.
 564  */
 565 static int
 566 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 567 {
 568         void __iomem *regs = priv->regs;
 569         dma_addr_t dma_addr;
 570         int loops;
 571
 572         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 573         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 574                 return -ENOMEM;
 575
 576         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 577         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 578         iowrite32(MWL8K_H2A_INT_DOORBELL,
 579                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 580         iowrite32(MWL8K_H2A_INT_DUMMY,
 581                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 582
 583         loops = 1000;
 584         do {
 585                 u32 int_code;
 586
 587                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 588                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 589                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 590                         break;
 591                 }
 592
 593                 cond_resched();
 594                 udelay(1);
 595         } while (--loops);
 596
 597         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 598
 599         return loops ? 0 : -ETIMEDOUT;
 600 }
 601
 602 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 603                                 const u8 *data, size_t length)
 604 {
 605         struct mwl8k_cmd_pkt *cmd;
 606         int done;
 607         int rc = 0;
 608
 609         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 610         if (cmd == NULL)
 611                 return -ENOMEM;
 612
 613         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 614         cmd->seq_num = 0;
 615         cmd->macid = 0;
 616         cmd->result = 0;
 617
 618         done = 0;
 619         while (length) {
 620                 int block_size = length > 256 ? 256 : length;
 621
 622                 memcpy(cmd->payload, data + done, block_size);
 623                 cmd->length = cpu_to_le16(block_size);
 624
 625                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 626                                                 sizeof(*cmd) + block_size);
 627                 if (rc)
 628                         break;
 629
 630                 done += block_size;
 631                 length -= block_size;
 632         }
 633
 634         if (!rc) {
 635                 cmd->length = 0;
 636                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 637         }
 638
 639         kfree(cmd);
 640
 641         return rc;
 642 }
 643
 644 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 645                                 const u8 *data, size_t length)
 646 {
 647         unsigned char *buffer;
 648         int may_continue, rc = 0;
 649         u32 done, prev_block_size;
 650
 651         buffer = kmalloc(1024, GFP_KERNEL);
 652         if (buffer == NULL)
 653                 return -ENOMEM;
 654
 655         done = 0;
 656         prev_block_size = 0;
 657         may_continue = 1000;
 658         while (may_continue > 0) {
 659                 u32 block_size;
 660
 661                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 662                 if (block_size & 1) {
 663                         block_size &= ~1;
 664                         may_continue--;
 665                 } else {
 666                         done += prev_block_size;
 667                         length -= prev_block_size;
 668                 }
 669
 670                 if (block_size > 1024 || block_size > length) {
 671                         rc = -EOVERFLOW;
 672                         break;
 673                 }
 674
 675                 if (length == 0) {
 676                         rc = 0;
 677                         break;
 678                 }
 679
 680                 if (block_size == 0) {
 681                         rc = -EPROTO;
 682                         may_continue--;
 683                         udelay(1);
 684                         continue;
 685                 }
 686
 687                 prev_block_size = block_size;
 688                 memcpy(buffer, data + done, block_size);
 689
 690                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 691                 if (rc)
 692                         break;
 693         }
 694
 695         if (!rc && length != 0)
 696                 rc = -EREMOTEIO;
 697
 698         kfree(buffer);
 699
 700         return rc;
 701 }
 702
 703 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 704 {
 705         struct mwl8k_priv *priv = hw->priv;
 706         const struct firmware *fw = priv->fw_ucode;
 707         int rc;
 708         int loops;
 709
 710         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 711                 const struct firmware *helper = priv->fw_helper;
 712
 713                 if (helper == NULL) {
 714                         printk(KERN_ERR "%s: helper image needed but none "
 715                                "given\n", pci_name(priv->pdev));
 716                         return -EINVAL;
 717                 }
 718
 719                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 720                 if (rc) {
 721                         printk(KERN_ERR "%s: unable to load firmware "
 722                                "helper image\n", pci_name(priv->pdev));
 723                         return rc;
 724                 }
 725                 msleep(20);
 726
 727                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 728         } else {
 729                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 730         }
 731
 732         if (rc) {
 733                 printk(KERN_ERR "%s: unable to load firmware image\n",
 734                        pci_name(priv->pdev));
 735                 return rc;
 736         }
 737
 738         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 739
 740         loops = 500000;
 741         do {
 742                 u32 ready_code;
 743
 744                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 745                 if (ready_code == MWL8K_FWAP_READY) {
 746                         priv->ap_fw = true;
 747                         break;
 748                 } else if (ready_code == MWL8K_FWSTA_READY) {
 749                         priv->ap_fw = false;
 750                         break;
 751                 }
 752
 753                 cond_resched();
 754                 udelay(1);
 755         } while (--loops);
 756
 757         return loops ? 0 : -ETIMEDOUT;
 758 }
 759
 760
 761 /* DMA header used by firmware and hardware.  */
 762 struct mwl8k_dma_data {
 763         __le16 fwlen;
 764         struct ieee80211_hdr wh;
 765         char data[0];
 766 } __packed;
 767
 768 /* Routines to add/remove DMA header from skb.  */
 769 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 770 {
 771         struct mwl8k_dma_data *tr;
 772         int hdrlen;
 773
 774         tr = (struct mwl8k_dma_data *)skb->data;
 775         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 776
 777         if (hdrlen != sizeof(tr->wh)) {
 778                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 779                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 780                         *((__le16 *)(tr->data - 2)) = qos;
 781                 } else {
 782                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 783                 }
 784         }
 785
 786         if (hdrlen != sizeof(*tr))
 787                 skb_pull(skb, sizeof(*tr) - hdrlen);
 788 }
 789
 790 #define REDUCED_TX_HEADROOM     8
 791
 792 static void
 793 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 794                                                 int head_pad, int tail_pad)
 795 {
 796         struct ieee80211_hdr *wh;
 797         int hdrlen;
 798         int reqd_hdrlen;
 799         struct mwl8k_dma_data *tr;
 800
 801         /*
 802          * Add a firmware DMA header; the firmware requires that we
 803          * present a 2-byte payload length followed by a 4-address
 804          * header (without QoS field), followed (optionally) by any
 805          * WEP/ExtIV header (but only filled in for CCMP).
 806          */
 807         wh = (struct ieee80211_hdr *)skb->data;
 808
 809         hdrlen = ieee80211_hdrlen(wh->frame_control);
 810
 811         /*
 812          * Check if skb_resize is required because of
 813          * tx_headroom adjustment.
 814          */
 815         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 816                                                 + REDUCED_TX_HEADROOM))) {
 817                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 818
 819                         wiphy_err(priv->hw->wiphy,
 820                                         "Failed to reallocate TX buffer\n");
 821                         return;
 822                 }
 823                 skb->truesize += REDUCED_TX_HEADROOM;
 824         }
 825
 826         reqd_hdrlen = sizeof(*tr) + head_pad;
 827
 828         if (hdrlen != reqd_hdrlen)
 829                 skb_push(skb, reqd_hdrlen - hdrlen);
 830
 831         if (ieee80211_is_data_qos(wh->frame_control))
 832                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 833
 834         tr = (struct mwl8k_dma_data *)skb->data;
 835         if (wh != &tr->wh)
 836                 memmove(&tr->wh, wh, hdrlen);
 837         if (hdrlen != sizeof(tr->wh))
 838                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 839
 840         /*
 841          * Firmware length is the length of the fully formed "802.11
 842          * payload".  That is, everything except for the 802.11 header.
 843          * This includes all crypto material including the MIC.
 844          */
 845         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 846 }
 847
 848 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 849                 struct sk_buff *skb)
 850 {
 851         struct ieee80211_hdr *wh;
 852         struct ieee80211_tx_info *tx_info;
 853         struct ieee80211_key_conf *key_conf;
 854         int data_pad;
 855         int head_pad = 0;
 856
 857         wh = (struct ieee80211_hdr *)skb->data;
 858
 859         tx_info = IEEE80211_SKB_CB(skb);
 860
 861         key_conf = NULL;
 862         if (ieee80211_is_data(wh->frame_control))
 863                 key_conf = tx_info->control.hw_key;
 864
 865         /*
 866          * Make sure the packet header is in the DMA header format (4-address
 867          * without QoS), and add head & tail padding when HW crypto is enabled.
 868          *
 869          * We have the following trailer padding requirements:
 870          * - WEP: 4 trailer bytes (ICV)
 871          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 872          * - CCMP: 8 trailer bytes (MIC)
 873          */
 874         data_pad = 0;
 875         if (key_conf != NULL) {
 876                 head_pad = key_conf->iv_len;
 877                 switch (key_conf->cipher) {
 878                 case WLAN_CIPHER_SUITE_WEP40:
 879                 case WLAN_CIPHER_SUITE_WEP104:
 880                         data_pad = 4;
 881                         break;
 882                 case WLAN_CIPHER_SUITE_TKIP:
 883                         data_pad = 12;
 884                         break;
 885                 case WLAN_CIPHER_SUITE_CCMP:
 886                         data_pad = 8;
 887                         break;
 888                 }
 889         }
 890         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 891 }
 892
 893 /*
 894  * Packet reception for 88w8366 AP firmware.
 895  */
 896 struct mwl8k_rxd_8366_ap {
 897         __le16 pkt_len;
 898         __u8 sq2;
 899         __u8 rate;
 900         __le32 pkt_phys_addr;
 901         __le32 next_rxd_phys_addr;
 902         __le16 qos_control;
 903         __le16 htsig2;
 904         __le32 hw_rssi_info;
 905         __le32 hw_noise_floor_info;
 906         __u8 noise_floor;
 907         __u8 pad0[3];
 908         __u8 rssi;
 909         __u8 rx_status;
 910         __u8 channel;
 911         __u8 rx_ctrl;
 912 } __packed;
 913
 914 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 915 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 916 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 917
 918 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 919
 920 /* 8366 AP rx_status bits */
 921 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 922 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 923 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 924 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 925 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 926
 927 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 928 {
 929         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 930
 931         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 932         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 933 }
 934
 935 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 936 {
 937         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 938
 939         rxd->pkt_len = cpu_to_le16(len);
 940         rxd->pkt_phys_addr = cpu_to_le32(addr);
 941         wmb();
 942         rxd->rx_ctrl = 0;
 943 }
 944
 945 static int
 946 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 947                           __le16 *qos, s8 *noise)
 948 {
 949         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 950
 951         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 952                 return -1;
 953         rmb();
 954
 955         memset(status, 0, sizeof(*status));
 956
 957         status->signal = -rxd->rssi;
 958         *noise = -rxd->noise_floor;
 959
 960         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 961                 status->flag |= RX_FLAG_HT;
 962                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 963                         status->flag |= RX_FLAG_40MHZ;
 964                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 965         } else {
 966                 int i;
 967
 968                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 969                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 970                                 status->rate_idx = i;
 971                                 break;
 972                         }
 973                 }
 974         }
 975
 976         if (rxd->channel > 14) {
 977                 status->band = IEEE80211_BAND_5GHZ;
 978                 if (!(status->flag & RX_FLAG_HT))
 979                         status->rate_idx -= 5;
 980         } else {
 981                 status->band = IEEE80211_BAND_2GHZ;
 982         }
 983         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 984                                                       status->band);
 985
 986         *qos = rxd->qos_control;
 987
 988         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 989             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 990             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 991                 status->flag |= RX_FLAG_MMIC_ERROR;
 992
 993         return le16_to_cpu(rxd->pkt_len);
 994 }
 995
 996 static struct rxd_ops rxd_8366_ap_ops = {
 997         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 998         .rxd_init       = mwl8k_rxd_8366_ap_init,
 999         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1000         .rxd_process    = mwl8k_rxd_8366_ap_process,
1001 };
1002
1003 /*
1004  * Packet reception for STA firmware.
1005  */
1006 struct mwl8k_rxd_sta {
1007         __le16 pkt_len;
1008         __u8 link_quality;
1009         __u8 noise_level;
1010         __le32 pkt_phys_addr;
1011         __le32 next_rxd_phys_addr;
1012         __le16 qos_control;
1013         __le16 rate_info;
1014         __le32 pad0[4];
1015         __u8 rssi;
1016         __u8 channel;
1017         __le16 pad1;
1018         __u8 rx_ctrl;
1019         __u8 rx_status;
1020         __u8 pad2[2];
1021 } __packed;
1022
1023 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1024 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1025 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1026 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1027 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1028 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1029
1030 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1031 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1032 /* ICV=0 or MIC=1 */
1033 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1034 /* Key is uploaded only in failure case */
1035 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1036
1037 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1038 {
1039         struct mwl8k_rxd_sta *rxd = _rxd;
1040
1041         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1042         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1043 }
1044
1045 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1046 {
1047         struct mwl8k_rxd_sta *rxd = _rxd;
1048
1049         rxd->pkt_len = cpu_to_le16(len);
1050         rxd->pkt_phys_addr = cpu_to_le32(addr);
1051         wmb();
1052         rxd->rx_ctrl = 0;
1053 }
1054
1055 static int
1056 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1057                        __le16 *qos, s8 *noise)
1058 {
1059         struct mwl8k_rxd_sta *rxd = _rxd;
1060         u16 rate_info;
1061
1062         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1063                 return -1;
1064         rmb();
1065
1066         rate_info = le16_to_cpu(rxd->rate_info);
1067
1068         memset(status, 0, sizeof(*status));
1069
1070         status->signal = -rxd->rssi;
1071         *noise = -rxd->noise_level;
1072         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1073         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1074
1075         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1076                 status->flag |= RX_FLAG_SHORTPRE;
1077         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1078                 status->flag |= RX_FLAG_40MHZ;
1079         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1080                 status->flag |= RX_FLAG_SHORT_GI;
1081         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1082                 status->flag |= RX_FLAG_HT;
1083
1084         if (rxd->channel > 14) {
1085                 status->band = IEEE80211_BAND_5GHZ;
1086                 if (!(status->flag & RX_FLAG_HT))
1087                         status->rate_idx -= 5;
1088         } else {
1089                 status->band = IEEE80211_BAND_2GHZ;
1090         }
1091         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1092                                                       status->band);
1093
1094         *qos = rxd->qos_control;
1095         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1096             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1097                 status->flag |= RX_FLAG_MMIC_ERROR;
1098
1099         return le16_to_cpu(rxd->pkt_len);
1100 }
1101
1102 static struct rxd_ops rxd_sta_ops = {
1103         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1104         .rxd_init       = mwl8k_rxd_sta_init,
1105         .rxd_refill     = mwl8k_rxd_sta_refill,
1106         .rxd_process    = mwl8k_rxd_sta_process,
1107 };
1108
1109
1110 #define MWL8K_RX_DESCS          256
1111 #define MWL8K_RX_MAXSZ          3800
1112
1113 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1114 {
1115         struct mwl8k_priv *priv = hw->priv;
1116         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1117         int size;
1118         int i;
1119
1120         rxq->rxd_count = 0;
1121         rxq->head = 0;
1122         rxq->tail = 0;
1123
1124         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1125
1126         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1127         if (rxq->rxd == NULL) {
1128                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1129                 return -ENOMEM;
1130         }
1131         memset(rxq->rxd, 0, size);
1132
1133         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1134         if (rxq->buf == NULL) {
1135                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1136                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1137                 return -ENOMEM;
1138         }
1139
1140         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1141                 int desc_size;
1142                 void *rxd;
1143                 int nexti;
1144                 dma_addr_t next_dma_addr;
1145
1146                 desc_size = priv->rxd_ops->rxd_size;
1147                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1148
1149                 nexti = i + 1;
1150                 if (nexti == MWL8K_RX_DESCS)
1151                         nexti = 0;
1152                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1153
1154                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1155         }
1156
1157         return 0;
1158 }
1159
1160 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1161 {
1162         struct mwl8k_priv *priv = hw->priv;
1163         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1164         int refilled;
1165
1166         refilled = 0;
1167         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1168                 struct sk_buff *skb;
1169                 dma_addr_t addr;
1170                 int rx;
1171                 void *rxd;
1172
1173                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1174                 if (skb == NULL)
1175                         break;
1176
1177                 addr = pci_map_single(priv->pdev, skb->data,
1178                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1179
1180                 rxq->rxd_count++;
1181                 rx = rxq->tail++;
1182                 if (rxq->tail == MWL8K_RX_DESCS)
1183                         rxq->tail = 0;
1184                 rxq->buf[rx].skb = skb;
1185                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1186
1187                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1188                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1189
1190                 refilled++;
1191         }
1192
1193         return refilled;
1194 }
1195
1196 /* Must be called only when the card's reception is completely halted */
1197 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1198 {
1199         struct mwl8k_priv *priv = hw->priv;
1200         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1201         int i;
1202
1203         if (rxq->rxd == NULL)
1204                 return;
1205
1206         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1207                 if (rxq->buf[i].skb != NULL) {
1208                         pci_unmap_single(priv->pdev,
1209                                          dma_unmap_addr(&rxq->buf[i], dma),
1210                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1211                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1212
1213                         kfree_skb(rxq->buf[i].skb);
1214                         rxq->buf[i].skb = NULL;
1215                 }
1216         }
1217
1218         kfree(rxq->buf);
1219         rxq->buf = NULL;
1220
1221         pci_free_consistent(priv->pdev,
1222                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1223                             rxq->rxd, rxq->rxd_dma);
1224         rxq->rxd = NULL;
1225 }
1226
1227
1228 /*
1229  * Scan a list of BSSIDs to process for finalize join.
1230  * Allows for extension to process multiple BSSIDs.
1231  */
1232 static inline int
1233 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1234 {
1235         return priv->capture_beacon &&
1236                 ieee80211_is_beacon(wh->frame_control) &&
1237                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1238 }
1239
1240 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1241                                      struct sk_buff *skb)
1242 {
1243         struct mwl8k_priv *priv = hw->priv;
1244
1245         priv->capture_beacon = false;
1246         memset(priv->capture_bssid, 0, ETH_ALEN);
1247
1248         /*
1249          * Use GFP_ATOMIC as rxq_process is called from
1250          * the primary interrupt handler, memory allocation call
1251          * must not sleep.
1252          */
1253         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1254         if (priv->beacon_skb != NULL)
1255                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1256 }
1257
1258 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1259                                                    u8 *bssid)
1260 {
1261         struct mwl8k_vif *mwl8k_vif;
1262
1263         list_for_each_entry(mwl8k_vif,
1264                             vif_list, list) {
1265                 if (memcmp(bssid, mwl8k_vif->bssid,
1266                            ETH_ALEN) == 0)
1267                         return mwl8k_vif;
1268         }
1269
1270         return NULL;
1271 }
1272
1273 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1274 {
1275         struct mwl8k_priv *priv = hw->priv;
1276         struct mwl8k_vif *mwl8k_vif = NULL;
1277         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1278         int processed;
1279
1280         processed = 0;
1281         while (rxq->rxd_count && limit--) {
1282                 struct sk_buff *skb;
1283                 void *rxd;
1284                 int pkt_len;
1285                 struct ieee80211_rx_status status;
1286                 struct ieee80211_hdr *wh;
1287                 __le16 qos;
1288
1289                 skb = rxq->buf[rxq->head].skb;
1290                 if (skb == NULL)
1291                         break;
1292
1293                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1294
1295                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1296                                                         &priv->noise);
1297                 if (pkt_len < 0)
1298                         break;
1299
1300                 rxq->buf[rxq->head].skb = NULL;
1301
1302                 pci_unmap_single(priv->pdev,
1303                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1304                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1305                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1306
1307                 rxq->head++;
1308                 if (rxq->head == MWL8K_RX_DESCS)
1309                         rxq->head = 0;
1310
1311                 rxq->rxd_count--;
1312
1313                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1314
1315                 /*
1316                  * Check for a pending join operation.  Save a
1317                  * copy of the beacon and schedule a tasklet to
1318                  * send a FINALIZE_JOIN command to the firmware.
1319                  */
1320                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1321                         mwl8k_save_beacon(hw, skb);
1322
1323                 if (ieee80211_has_protected(wh->frame_control)) {
1324
1325                         /* Check if hw crypto has been enabled for
1326                          * this bss. If yes, set the status flags
1327                          * accordingly
1328                          */
1329                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1330                                                                 wh->addr1);
1331
1332                         if (mwl8k_vif != NULL &&
1333                             mwl8k_vif->is_hw_crypto_enabled == true) {
1334                                 /*
1335                                  * When MMIC ERROR is encountered
1336                                  * by the firmware, payload is
1337                                  * dropped and only 32 bytes of
1338                                  * mwl8k Firmware header is sent
1339                                  * to the host.
1340                                  *
1341                                  * We need to add four bytes of
1342                                  * key information.  In it
1343                                  * MAC80211 expects keyidx set to
1344                                  * 0 for triggering Counter
1345                                  * Measure of MMIC failure.
1346                                  */
1347                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1348                                         struct mwl8k_dma_data *tr;
1349                                         tr = (struct mwl8k_dma_data *)skb->data;
1350                                         memset((void *)&(tr->data), 0, 4);
1351                                         pkt_len += 4;
1352                                 }
1353
1354                                 if (!ieee80211_is_auth(wh->frame_control))
1355                                         status.flag |= RX_FLAG_IV_STRIPPED |
1356                                                        RX_FLAG_DECRYPTED |
1357                                                        RX_FLAG_MMIC_STRIPPED;
1358                         }
1359                 }
1360
1361                 skb_put(skb, pkt_len);
1362                 mwl8k_remove_dma_header(skb, qos);
1363                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1364                 ieee80211_rx_irqsafe(hw, skb);
1365
1366                 processed++;
1367         }
1368
1369         return processed;
1370 }
1371
1372
1373 /*
1374  * Packet transmission.
1375  */
1376
1377 #define MWL8K_TXD_STATUS_OK                     0x00000001
1378 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1379 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1380 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1381 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1382
1383 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1384 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1385 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1386 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1387 #define MWL8K_QOS_EOSP                          0x0010
1388
1389 struct mwl8k_tx_desc {
1390         __le32 status;
1391         __u8 data_rate;
1392         __u8 tx_priority;
1393         __le16 qos_control;
1394         __le32 pkt_phys_addr;
1395         __le16 pkt_len;
1396         __u8 dest_MAC_addr[ETH_ALEN];
1397         __le32 next_txd_phys_addr;
1398         __le32 timestamp;
1399         __le16 rate_info;
1400         __u8 peer_id;
1401         __u8 tx_frag_cnt;
1402 } __packed;
1403
1404 #define MWL8K_TX_DESCS          128
1405
1406 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1407 {
1408         struct mwl8k_priv *priv = hw->priv;
1409         struct mwl8k_tx_queue *txq = priv->txq + index;
1410         int size;
1411         int i;
1412
1413         txq->len = 0;
1414         txq->head = 0;
1415         txq->tail = 0;
1416
1417         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1418
1419         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1420         if (txq->txd == NULL) {
1421                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1422                 return -ENOMEM;
1423         }
1424         memset(txq->txd, 0, size);
1425
1426         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1427         if (txq->skb == NULL) {
1428                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1429                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1430                 return -ENOMEM;
1431         }
1432
1433         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1434                 struct mwl8k_tx_desc *tx_desc;
1435                 int nexti;
1436
1437                 tx_desc = txq->txd + i;
1438                 nexti = (i + 1) % MWL8K_TX_DESCS;
1439
1440                 tx_desc->status = 0;
1441                 tx_desc->next_txd_phys_addr =
1442                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1443         }
1444
1445         return 0;
1446 }
1447
1448 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1449 {
1450         iowrite32(MWL8K_H2A_INT_PPA_READY,
1451                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1452         iowrite32(MWL8K_H2A_INT_DUMMY,
1453                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1454         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1455 }
1456
1457 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1458 {
1459         struct mwl8k_priv *priv = hw->priv;
1460         int i;
1461
1462         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1463                 struct mwl8k_tx_queue *txq = priv->txq + i;
1464                 int fw_owned = 0;
1465                 int drv_owned = 0;
1466                 int unused = 0;
1467                 int desc;
1468
1469                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1470                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1471                         u32 status;
1472
1473                         status = le32_to_cpu(tx_desc->status);
1474                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1475                                 fw_owned++;
1476                         else
1477                                 drv_owned++;
1478
1479                         if (tx_desc->pkt_len == 0)
1480                                 unused++;
1481                 }
1482
1483                 wiphy_err(hw->wiphy,
1484                           "txq[%d] len=%d head=%d tail=%d "
1485                           "fw_owned=%d drv_owned=%d unused=%d\n",
1486                           i,
1487                           txq->len, txq->head, txq->tail,
1488                           fw_owned, drv_owned, unused);
1489         }
1490 }
1491
1492 /*
1493  * Must be called with priv->fw_mutex held and tx queues stopped.
1494  */
1495 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1496
1497 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1498 {
1499         struct mwl8k_priv *priv = hw->priv;
1500         DECLARE_COMPLETION_ONSTACK(tx_wait);
1501         int retry;
1502         int rc;
1503
1504         might_sleep();
1505
1506         /* Since fw restart is in progress, allow only the firmware
1507          * commands from the restart code and block the other
1508          * commands since they are going to fail in any case since
1509          * the firmware has crashed
1510          */
1511         if (priv->hw_restart_in_progress) {
1512                 if (priv->hw_restart_owner == current)
1513                         return 0;
1514                 else
1515                         return -EBUSY;
1516         }
1517
1518         /*
1519          * The TX queues are stopped at this point, so this test
1520          * doesn't need to take ->tx_lock.
1521          */
1522         if (!priv->pending_tx_pkts)
1523                 return 0;
1524
1525         retry = 0;
1526         rc = 0;
1527
1528         spin_lock_bh(&priv->tx_lock);
1529         priv->tx_wait = &tx_wait;
1530         while (!rc) {
1531                 int oldcount;
1532                 unsigned long timeout;
1533
1534                 oldcount = priv->pending_tx_pkts;
1535
1536                 spin_unlock_bh(&priv->tx_lock);
1537                 timeout = wait_for_completion_timeout(&tx_wait,
1538                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1539                 spin_lock_bh(&priv->tx_lock);
1540
1541                 if (timeout) {
1542                         WARN_ON(priv->pending_tx_pkts);
1543                         if (retry)
1544                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1545                         break;
1546                 }
1547
1548                 if (priv->pending_tx_pkts < oldcount) {
1549                         wiphy_notice(hw->wiphy,
1550                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1551                                      oldcount, priv->pending_tx_pkts);
1552                         retry = 1;
1553                         continue;
1554                 }
1555
1556                 priv->tx_wait = NULL;
1557
1558                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1559                           MWL8K_TX_WAIT_TIMEOUT_MS);
1560                 mwl8k_dump_tx_rings(hw);
1561                 priv->hw_restart_in_progress = true;
1562                 ieee80211_queue_work(hw, &priv->fw_reload);
1563
1564                 rc = -ETIMEDOUT;
1565         }
1566         spin_unlock_bh(&priv->tx_lock);
1567
1568         return rc;
1569 }
1570
1571 #define MWL8K_TXD_SUCCESS(status)                               \
1572         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1573                      MWL8K_TXD_STATUS_OK_RETRY |                \
1574                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1575
1576 static int mwl8k_tid_queue_mapping(u8 tid)
1577 {
1578         BUG_ON(tid > 7);
1579
1580         switch (tid) {
1581         case 0:
1582         case 3:
1583                 return IEEE80211_AC_BE;
1584                 break;
1585         case 1:
1586         case 2:
1587                 return IEEE80211_AC_BK;
1588                 break;
1589         case 4:
1590         case 5:
1591                 return IEEE80211_AC_VI;
1592                 break;
1593         case 6:
1594         case 7:
1595                 return IEEE80211_AC_VO;
1596                 break;
1597         default:
1598                 return -1;
1599                 break;
1600         }
1601 }
1602
1603 /* The firmware will fill in the rate information
1604  * for each packet that gets queued in the hardware
1605  * and these macros will interpret that info.
1606  */
1607
1608 #define RI_FORMAT(a)              (a & 0x0001)
1609 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1610
1611 static int
1612 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1613 {
1614         struct mwl8k_priv *priv = hw->priv;
1615         struct mwl8k_tx_queue *txq = priv->txq + index;
1616         int processed;
1617
1618         processed = 0;
1619         while (txq->len > 0 && limit--) {
1620                 int tx;
1621                 struct mwl8k_tx_desc *tx_desc;
1622                 unsigned long addr;
1623                 int size;
1624                 struct sk_buff *skb;
1625                 struct ieee80211_tx_info *info;
1626                 u32 status;
1627                 struct ieee80211_sta *sta;
1628                 struct mwl8k_sta *sta_info = NULL;
1629                 u16 rate_info;
1630                 struct ieee80211_hdr *wh;
1631
1632                 tx = txq->head;
1633                 tx_desc = txq->txd + tx;
1634
1635                 status = le32_to_cpu(tx_desc->status);
1636
1637                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1638                         if (!force)
1639                                 break;
1640                         tx_desc->status &=
1641                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1642                 }
1643
1644                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1645                 BUG_ON(txq->len == 0);
1646                 txq->len--;
1647                 priv->pending_tx_pkts--;
1648
1649                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1650                 size = le16_to_cpu(tx_desc->pkt_len);
1651                 skb = txq->skb[tx];
1652                 txq->skb[tx] = NULL;
1653
1654                 BUG_ON(skb == NULL);
1655                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1656
1657                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1658
1659                 wh = (struct ieee80211_hdr *) skb->data;
1660
1661                 /* Mark descriptor as unused */
1662                 tx_desc->pkt_phys_addr = 0;
1663                 tx_desc->pkt_len = 0;
1664
1665                 info = IEEE80211_SKB_CB(skb);
1666                 if (ieee80211_is_data(wh->frame_control)) {
1667                         sta = info->control.sta;
1668                         if (sta) {
1669                                 sta_info = MWL8K_STA(sta);
1670                                 BUG_ON(sta_info == NULL);
1671                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1672                                 /* If rate is < 6.5 Mpbs for an ht station
1673                                  * do not form an ampdu. If the station is a
1674                                  * legacy station (format = 0), do not form an
1675                                  * ampdu
1676                                  */
1677                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1678                                     RI_FORMAT(rate_info) == 0) {
1679                                         sta_info->is_ampdu_allowed = false;
1680                                 } else {
1681                                         sta_info->is_ampdu_allowed = true;
1682                                 }
1683                         }
1684                 }
1685
1686                 ieee80211_tx_info_clear_status(info);
1687
1688                 /* Rate control is happening in the firmware.
1689                  * Ensure no tx rate is being reported.
1690                  */
1691                 info->status.rates[0].idx = -1;
1692                 info->status.rates[0].count = 1;
1693
1694                 if (MWL8K_TXD_SUCCESS(status))
1695                         info->flags |= IEEE80211_TX_STAT_ACK;
1696
1697                 ieee80211_tx_status_irqsafe(hw, skb);
1698
1699                 processed++;
1700         }
1701
1702         return processed;
1703 }
1704
1705 /* must be called only when the card's transmit is completely halted */
1706 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1707 {
1708         struct mwl8k_priv *priv = hw->priv;
1709         struct mwl8k_tx_queue *txq = priv->txq + index;
1710
1711         if (txq->txd == NULL)
1712                 return;
1713
1714         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1715
1716         kfree(txq->skb);
1717         txq->skb = NULL;
1718
1719         pci_free_consistent(priv->pdev,
1720                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1721                             txq->txd, txq->txd_dma);
1722         txq->txd = NULL;
1723 }
1724
1725 /* caller must hold priv->stream_lock when calling the stream functions */
1726 static struct mwl8k_ampdu_stream *
1727 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1728 {
1729         struct mwl8k_ampdu_stream *stream;
1730         struct mwl8k_priv *priv = hw->priv;
1731         int i;
1732
1733         for (i = 0; i < priv->num_ampdu_queues; i++) {
1734                 stream = &priv->ampdu[i];
1735                 if (stream->state == AMPDU_NO_STREAM) {
1736                         stream->sta = sta;
1737                         stream->state = AMPDU_STREAM_NEW;
1738                         stream->tid = tid;
1739                         stream->idx = i;
1740                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1741                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1742                                     sta->addr, tid);
1743                         return stream;
1744                 }
1745         }
1746         return NULL;
1747 }
1748
1749 static int
1750 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1751 {
1752         int ret;
1753
1754         /* if the stream has already been started, don't start it again */
1755         if (stream->state != AMPDU_STREAM_NEW)
1756                 return 0;
1757         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1758         if (ret)
1759                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1760                             "%d\n", stream->sta->addr, stream->tid, ret);
1761         else
1762                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1763                             stream->sta->addr, stream->tid);
1764         return ret;
1765 }
1766
1767 static void
1768 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1769 {
1770         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1771                     stream->tid);
1772         memset(stream, 0, sizeof(*stream));
1773 }
1774
1775 static struct mwl8k_ampdu_stream *
1776 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1777 {
1778         struct mwl8k_priv *priv = hw->priv;
1779         int i;
1780
1781         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1782                 struct mwl8k_ampdu_stream *stream;
1783                 stream = &priv->ampdu[i];
1784                 if (stream->state == AMPDU_NO_STREAM)
1785                         continue;
1786                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1787                     stream->tid == tid)
1788                         return stream;
1789         }
1790         return NULL;
1791 }
1792
1793 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1794 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1795 {
1796         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1797         struct tx_traffic_info *tx_stats;
1798
1799         BUG_ON(tid >= MWL8K_MAX_TID);
1800         tx_stats = &sta_info->tx_stats[tid];
1801
1802         return sta_info->is_ampdu_allowed &&
1803                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1804 }
1805
1806 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1807 {
1808         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1809         struct tx_traffic_info *tx_stats;
1810
1811         BUG_ON(tid >= MWL8K_MAX_TID);
1812         tx_stats = &sta_info->tx_stats[tid];
1813
1814         if (tx_stats->start_time == 0)
1815                 tx_stats->start_time = jiffies;
1816
1817         /* reset the packet count after each second elapses.  If the number of
1818          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1819          * an ampdu stream to be started.
1820          */
1821         if (jiffies - tx_stats->start_time > HZ) {
1822                 tx_stats->pkts = 0;
1823                 tx_stats->start_time = 0;
1824         } else
1825                 tx_stats->pkts++;
1826 }
1827
1828 static void
1829 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1830 {
1831         struct mwl8k_priv *priv = hw->priv;
1832         struct ieee80211_tx_info *tx_info;
1833         struct mwl8k_vif *mwl8k_vif;
1834         struct ieee80211_sta *sta;
1835         struct ieee80211_hdr *wh;
1836         struct mwl8k_tx_queue *txq;
1837         struct mwl8k_tx_desc *tx;
1838         dma_addr_t dma;
1839         u32 txstatus;
1840         u8 txdatarate;
1841         u16 qos;
1842         int txpriority;
1843         u8 tid = 0;
1844         struct mwl8k_ampdu_stream *stream = NULL;
1845         bool start_ba_session = false;
1846         bool mgmtframe = false;
1847         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1848
1849         wh = (struct ieee80211_hdr *)skb->data;
1850         if (ieee80211_is_data_qos(wh->frame_control))
1851                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1852         else
1853                 qos = 0;
1854
1855         if (ieee80211_is_mgmt(wh->frame_control))
1856                 mgmtframe = true;
1857
1858         if (priv->ap_fw)
1859                 mwl8k_encapsulate_tx_frame(priv, skb);
1860         else
1861                 mwl8k_add_dma_header(priv, skb, 0, 0);
1862
1863         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1864
1865         tx_info = IEEE80211_SKB_CB(skb);
1866         sta = tx_info->control.sta;
1867         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1868
1869         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1870                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1871                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1872                 mwl8k_vif->seqno += 0x10;
1873         }
1874
1875         /* Setup firmware control bit fields for each frame type.  */
1876         txstatus = 0;
1877         txdatarate = 0;
1878         if (ieee80211_is_mgmt(wh->frame_control) ||
1879             ieee80211_is_ctl(wh->frame_control)) {
1880                 txdatarate = 0;
1881                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1882         } else if (ieee80211_is_data(wh->frame_control)) {
1883                 txdatarate = 1;
1884                 if (is_multicast_ether_addr(wh->addr1))
1885                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1886
1887                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1888                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1889                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1890                 else
1891                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1892         }
1893
1894         /* Queue ADDBA request in the respective data queue.  While setting up
1895          * the ampdu stream, mac80211 queues further packets for that
1896          * particular ra/tid pair.  However, packets piled up in the hardware
1897          * for that ra/tid pair will still go out. ADDBA request and the
1898          * related data packets going out from different queues asynchronously
1899          * will cause a shift in the receiver window which might result in
1900          * ampdu packets getting dropped at the receiver after the stream has
1901          * been setup.
1902          */
1903         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1904             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1905             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1906             priv->ap_fw)) {
1907                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1908                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1909                 index = mwl8k_tid_queue_mapping(tid);
1910         }
1911
1912         txpriority = index;
1913
1914         if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1915                         && skb->protocol != cpu_to_be16(ETH_P_PAE)
1916                         && ieee80211_is_data_qos(wh->frame_control)) {
1917                 tid = qos & 0xf;
1918                 mwl8k_tx_count_packet(sta, tid);
1919                 spin_lock(&priv->stream_lock);
1920                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1921                 if (stream != NULL) {
1922                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1923                                 txpriority = stream->txq_idx;
1924                                 index = stream->txq_idx;
1925                         } else if (stream->state == AMPDU_STREAM_NEW) {
1926                                 /* We get here if the driver sends us packets
1927                                  * after we've initiated a stream, but before
1928                                  * our ampdu_action routine has been called
1929                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1930                                  * for the ADDBA request.  So this packet can
1931                                  * go out with no risk of sequence number
1932                                  * mismatch.  No special handling is required.
1933                                  */
1934                         } else {
1935                                 /* Drop packets that would go out after the
1936                                  * ADDBA request was sent but before the ADDBA
1937                                  * response is received.  If we don't do this,
1938                                  * the recipient would probably receive it
1939                                  * after the ADDBA request with SSN 0.  This
1940                                  * will cause the recipient's BA receive window
1941                                  * to shift, which would cause the subsequent
1942                                  * packets in the BA stream to be discarded.
1943                                  * mac80211 queues our packets for us in this
1944                                  * case, so this is really just a safety check.
1945                                  */
1946                                 wiphy_warn(hw->wiphy,
1947                                            "Cannot send packet while ADDBA "
1948                                            "dialog is underway.\n");
1949                                 spin_unlock(&priv->stream_lock);
1950                                 dev_kfree_skb(skb);
1951                                 return;
1952                         }
1953                 } else {
1954                         /* Defer calling mwl8k_start_stream so that the current
1955                          * skb can go out before the ADDBA request.  This
1956                          * prevents sequence number mismatch at the recepient
1957                          * as described above.
1958                          */
1959                         if (mwl8k_ampdu_allowed(sta, tid)) {
1960                                 stream = mwl8k_add_stream(hw, sta, tid);
1961                                 if (stream != NULL)
1962                                         start_ba_session = true;
1963                         }
1964                 }
1965                 spin_unlock(&priv->stream_lock);
1966         }
1967
1968         dma = pci_map_single(priv->pdev, skb->data,
1969                                 skb->len, PCI_DMA_TODEVICE);
1970
1971         if (pci_dma_mapping_error(priv->pdev, dma)) {
1972                 wiphy_debug(hw->wiphy,
1973                             "failed to dma map skb, dropping TX frame.\n");
1974                 if (start_ba_session) {
1975                         spin_lock(&priv->stream_lock);
1976                         mwl8k_remove_stream(hw, stream);
1977                         spin_unlock(&priv->stream_lock);
1978                 }
1979                 dev_kfree_skb(skb);
1980                 return;
1981         }
1982
1983         spin_lock_bh(&priv->tx_lock);
1984
1985         txq = priv->txq + index;
1986
1987         /* Mgmt frames that go out frequently are probe
1988          * responses. Other mgmt frames got out relatively
1989          * infrequently. Hence reserve 2 buffers so that
1990          * other mgmt frames do not get dropped due to an
1991          * already queued probe response in one of the
1992          * reserved buffers.
1993          */
1994
1995         if (txq->len >= MWL8K_TX_DESCS - 2) {
1996                 if (mgmtframe == false ||
1997                         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 /*
3434  * CMD_SET_MAC_ADDR.
3435  */
3436 struct mwl8k_cmd_set_mac_addr {
3437         struct mwl8k_cmd_pkt header;
3438         union {
3439                 struct {
3440                         __le16 mac_type;
3441                         __u8 mac_addr[ETH_ALEN];
3442                 } mbss;
3443                 __u8 mac_addr[ETH_ALEN];
3444         };
3445 } __packed;
3446
3447 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3448 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3449 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3450 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3451
3452 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3453                                   struct ieee80211_vif *vif, u8 *mac)
3454 {
3455         struct mwl8k_priv *priv = hw->priv;
3456         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3457         struct mwl8k_cmd_set_mac_addr *cmd;
3458         int mac_type;
3459         int rc;
3460
3461         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3462         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3463                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3464                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3465                 else
3466                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3467         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3468                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3469                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3470                 else
3471                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3472         }
3473
3474         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3475         if (cmd == NULL)
3476                 return -ENOMEM;
3477
3478         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3479         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3480         if (priv->ap_fw) {
3481                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3482                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3483         } else {
3484                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3485         }
3486
3487         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3488         kfree(cmd);
3489
3490         return rc;
3491 }
3492
3493 /*
3494  * CMD_SET_RATEADAPT_MODE.
3495  */
3496 struct mwl8k_cmd_set_rate_adapt_mode {
3497         struct mwl8k_cmd_pkt header;
3498         __le16 action;
3499         __le16 mode;
3500 } __packed;
3501
3502 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3503 {
3504         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3505         int rc;
3506
3507         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3508         if (cmd == NULL)
3509                 return -ENOMEM;
3510
3511         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3512         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3513         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3514         cmd->mode = cpu_to_le16(mode);
3515
3516         rc = mwl8k_post_cmd(hw, &cmd->header);
3517         kfree(cmd);
3518
3519         return rc;
3520 }
3521
3522 /*
3523  * CMD_GET_WATCHDOG_BITMAP.
3524  */
3525 struct mwl8k_cmd_get_watchdog_bitmap {
3526         struct mwl8k_cmd_pkt header;
3527         u8      bitmap;
3528 } __packed;
3529
3530 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3531 {
3532         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3533         int rc;
3534
3535         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3536         if (cmd == NULL)
3537                 return -ENOMEM;
3538
3539         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3540         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3541
3542         rc = mwl8k_post_cmd(hw, &cmd->header);
3543         if (!rc)
3544                 *bitmap = cmd->bitmap;
3545
3546         kfree(cmd);
3547
3548         return rc;
3549 }
3550
3551 #define INVALID_BA      0xAA
3552 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3553 {
3554         int rc;
3555         u8 bitmap = 0, stream_index;
3556         struct mwl8k_ampdu_stream *streams;
3557         struct mwl8k_priv *priv =
3558                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3559
3560         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3561         if (rc)
3562                 return;
3563
3564         if (bitmap == INVALID_BA)
3565                 return;
3566
3567         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3568         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3569
3570         BUG_ON(stream_index >= priv->num_ampdu_queues);
3571
3572         streams = &priv->ampdu[stream_index];
3573
3574         if (streams->state == AMPDU_STREAM_ACTIVE)
3575                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3576
3577         return;
3578 }
3579
3580
3581 /*
3582  * CMD_BSS_START.
3583  */
3584 struct mwl8k_cmd_bss_start {
3585         struct mwl8k_cmd_pkt header;
3586         __le32 enable;
3587 } __packed;
3588
3589 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3590                                struct ieee80211_vif *vif, int enable)
3591 {
3592         struct mwl8k_cmd_bss_start *cmd;
3593         int rc;
3594
3595         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3596         if (cmd == NULL)
3597                 return -ENOMEM;
3598
3599         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3600         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3601         cmd->enable = cpu_to_le32(enable);
3602
3603         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3604         kfree(cmd);
3605
3606         return rc;
3607 }
3608
3609 /*
3610  * CMD_BASTREAM.
3611  */
3612
3613 /*
3614  * UPSTREAM is tx direction
3615  */
3616 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3617 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3618
3619 enum ba_stream_action_type {
3620         MWL8K_BA_CREATE,
3621         MWL8K_BA_UPDATE,
3622         MWL8K_BA_DESTROY,
3623         MWL8K_BA_FLUSH,
3624         MWL8K_BA_CHECK,
3625 };
3626
3627
3628 struct mwl8k_create_ba_stream {
3629         __le32  flags;
3630         __le32  idle_thrs;
3631         __le32  bar_thrs;
3632         __le32  window_size;
3633         u8      peer_mac_addr[6];
3634         u8      dialog_token;
3635         u8      tid;
3636         u8      queue_id;
3637         u8      param_info;
3638         __le32  ba_context;
3639         u8      reset_seq_no_flag;
3640         __le16  curr_seq_no;
3641         u8      sta_src_mac_addr[6];
3642 } __packed;
3643
3644 struct mwl8k_destroy_ba_stream {
3645         __le32  flags;
3646         __le32  ba_context;
3647 } __packed;
3648
3649 struct mwl8k_cmd_bastream {
3650         struct mwl8k_cmd_pkt    header;
3651         __le32  action;
3652         union {
3653                 struct mwl8k_create_ba_stream   create_params;
3654                 struct mwl8k_destroy_ba_stream  destroy_params;
3655         };
3656 } __packed;
3657
3658 static int
3659 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3660 {
3661         struct mwl8k_cmd_bastream *cmd;
3662         int rc;
3663
3664         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3665         if (cmd == NULL)
3666                 return -ENOMEM;
3667
3668         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3669         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3670
3671         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3672
3673         cmd->create_params.queue_id = stream->idx;
3674         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3675                ETH_ALEN);
3676         cmd->create_params.tid = stream->tid;
3677
3678         cmd->create_params.flags =
3679                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3680                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3681
3682         rc = mwl8k_post_cmd(hw, &cmd->header);
3683
3684         kfree(cmd);
3685
3686         return rc;
3687 }
3688
3689 static int
3690 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3691                 u8 buf_size)
3692 {
3693         struct mwl8k_cmd_bastream *cmd;
3694         int rc;
3695
3696         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3697         if (cmd == NULL)
3698                 return -ENOMEM;
3699
3700
3701         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3702         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3703
3704         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3705
3706         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3707         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3708         cmd->create_params.queue_id = stream->idx;
3709
3710         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3711         cmd->create_params.tid = stream->tid;
3712         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3713         cmd->create_params.reset_seq_no_flag = 1;
3714
3715         cmd->create_params.param_info =
3716                 (stream->sta->ht_cap.ampdu_factor &
3717                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3718                 ((stream->sta->ht_cap.ampdu_density << 2) &
3719                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3720
3721         cmd->create_params.flags =
3722                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3723                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3724
3725         rc = mwl8k_post_cmd(hw, &cmd->header);
3726
3727         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3728                 stream->sta->addr, stream->tid);
3729         kfree(cmd);
3730
3731         return rc;
3732 }
3733
3734 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3735                              struct mwl8k_ampdu_stream *stream)
3736 {
3737         struct mwl8k_cmd_bastream *cmd;
3738
3739         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3740         if (cmd == NULL)
3741                 return;
3742
3743         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3744         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3745         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3746
3747         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3748         mwl8k_post_cmd(hw, &cmd->header);
3749
3750         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3751
3752         kfree(cmd);
3753 }
3754
3755 /*
3756  * CMD_SET_NEW_STN.
3757  */
3758 struct mwl8k_cmd_set_new_stn {
3759         struct mwl8k_cmd_pkt header;
3760         __le16 aid;
3761         __u8 mac_addr[6];
3762         __le16 stn_id;
3763         __le16 action;
3764         __le16 rsvd;
3765         __le32 legacy_rates;
3766         __u8 ht_rates[4];
3767         __le16 cap_info;
3768         __le16 ht_capabilities_info;
3769         __u8 mac_ht_param_info;
3770         __u8 rev;
3771         __u8 control_channel;
3772         __u8 add_channel;
3773         __le16 op_mode;
3774         __le16 stbc;
3775         __u8 add_qos_info;
3776         __u8 is_qos_sta;
3777         __le32 fw_sta_ptr;
3778 } __packed;
3779
3780 #define MWL8K_STA_ACTION_ADD            0
3781 #define MWL8K_STA_ACTION_REMOVE         2
3782
3783 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3784                                      struct ieee80211_vif *vif,
3785                                      struct ieee80211_sta *sta)
3786 {
3787         struct mwl8k_cmd_set_new_stn *cmd;
3788         u32 rates;
3789         int rc;
3790
3791         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3792         if (cmd == NULL)
3793                 return -ENOMEM;
3794
3795         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3796         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3797         cmd->aid = cpu_to_le16(sta->aid);
3798         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3799         cmd->stn_id = cpu_to_le16(sta->aid);
3800         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3801         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3802                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3803         else
3804                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3805         cmd->legacy_rates = cpu_to_le32(rates);
3806         if (sta->ht_cap.ht_supported) {
3807                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3808                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3809                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3810                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3811                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3812                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3813                         ((sta->ht_cap.ampdu_density & 7) << 2);
3814                 cmd->is_qos_sta = 1;
3815         }
3816
3817         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3818         kfree(cmd);
3819
3820         return rc;
3821 }
3822
3823 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3824                                           struct ieee80211_vif *vif)
3825 {
3826         struct mwl8k_cmd_set_new_stn *cmd;
3827         int rc;
3828
3829         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3830         if (cmd == NULL)
3831                 return -ENOMEM;
3832
3833         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3834         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3835         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3836
3837         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3838         kfree(cmd);
3839
3840         return rc;
3841 }
3842
3843 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3844                                      struct ieee80211_vif *vif, u8 *addr)
3845 {
3846         struct mwl8k_cmd_set_new_stn *cmd;
3847         int rc;
3848
3849         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3850         if (cmd == NULL)
3851                 return -ENOMEM;
3852
3853         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3854         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3855         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3856         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3857
3858         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3859         kfree(cmd);
3860
3861         return rc;
3862 }
3863
3864 /*
3865  * CMD_UPDATE_ENCRYPTION.
3866  */
3867
3868 #define MAX_ENCR_KEY_LENGTH     16
3869 #define MIC_KEY_LENGTH          8
3870
3871 struct mwl8k_cmd_update_encryption {
3872         struct mwl8k_cmd_pkt header;
3873
3874         __le32 action;
3875         __le32 reserved;
3876         __u8 mac_addr[6];
3877         __u8 encr_type;
3878
3879 } __packed;
3880
3881 struct mwl8k_cmd_set_key {
3882         struct mwl8k_cmd_pkt header;
3883
3884         __le32 action;
3885         __le32 reserved;
3886         __le16 length;
3887         __le16 key_type_id;
3888         __le32 key_info;
3889         __le32 key_id;
3890         __le16 key_len;
3891         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3892         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3893         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3894         __le16 tkip_rsc_low;
3895         __le32 tkip_rsc_high;
3896         __le16 tkip_tsc_low;
3897         __le32 tkip_tsc_high;
3898         __u8 mac_addr[6];
3899 } __packed;
3900
3901 enum {
3902         MWL8K_ENCR_ENABLE,
3903         MWL8K_ENCR_SET_KEY,
3904         MWL8K_ENCR_REMOVE_KEY,
3905         MWL8K_ENCR_SET_GROUP_KEY,
3906 };
3907
3908 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3909 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3910 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3911 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3912 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3913
3914 enum {
3915         MWL8K_ALG_WEP,
3916         MWL8K_ALG_TKIP,
3917         MWL8K_ALG_CCMP,
3918 };
3919
3920 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3921 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3922 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3923 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3924 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3925
3926 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3927                                               struct ieee80211_vif *vif,
3928                                               u8 *addr,
3929                                               u8 encr_type)
3930 {
3931         struct mwl8k_cmd_update_encryption *cmd;
3932         int rc;
3933
3934         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3935         if (cmd == NULL)
3936                 return -ENOMEM;
3937
3938         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3939         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3940         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3941         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3942         cmd->encr_type = encr_type;
3943
3944         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3945         kfree(cmd);
3946
3947         return rc;
3948 }
3949
3950 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3951                                                 u8 *addr,
3952                                                 struct ieee80211_key_conf *key)
3953 {
3954         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3955         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3956         cmd->length = cpu_to_le16(sizeof(*cmd) -
3957                                 offsetof(struct mwl8k_cmd_set_key, length));
3958         cmd->key_id = cpu_to_le32(key->keyidx);
3959         cmd->key_len = cpu_to_le16(key->keylen);
3960         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3961
3962         switch (key->cipher) {
3963         case WLAN_CIPHER_SUITE_WEP40:
3964         case WLAN_CIPHER_SUITE_WEP104:
3965                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3966                 if (key->keyidx == 0)
3967                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3968
3969                 break;
3970         case WLAN_CIPHER_SUITE_TKIP:
3971                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3972                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3973                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3974                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3975                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3976                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3977                 break;
3978         case WLAN_CIPHER_SUITE_CCMP:
3979                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3980                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3981                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3982                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3983                 break;
3984         default:
3985                 return -ENOTSUPP;
3986         }
3987
3988         return 0;
3989 }
3990
3991 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3992                                                 struct ieee80211_vif *vif,
3993                                                 u8 *addr,
3994                                                 struct ieee80211_key_conf *key)
3995 {
3996         struct mwl8k_cmd_set_key *cmd;
3997         int rc;
3998         int keymlen;
3999         u32 action;
4000         u8 idx;
4001         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4002
4003         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4004         if (cmd == NULL)
4005                 return -ENOMEM;
4006
4007         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4008         if (rc < 0)
4009                 goto done;
4010
4011         idx = key->keyidx;
4012
4013         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4014                 action = MWL8K_ENCR_SET_KEY;
4015         else
4016                 action = MWL8K_ENCR_SET_GROUP_KEY;
4017
4018         switch (key->cipher) {
4019         case WLAN_CIPHER_SUITE_WEP40:
4020         case WLAN_CIPHER_SUITE_WEP104:
4021                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4022                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4023                                                 sizeof(*key) + key->keylen);
4024                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4025                 }
4026
4027                 keymlen = key->keylen;
4028                 action = MWL8K_ENCR_SET_KEY;
4029                 break;
4030         case WLAN_CIPHER_SUITE_TKIP:
4031                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4032                 break;
4033         case WLAN_CIPHER_SUITE_CCMP:
4034                 keymlen = key->keylen;
4035                 break;
4036         default:
4037                 rc = -ENOTSUPP;
4038                 goto done;
4039         }
4040
4041         memcpy(cmd->key_material, key->key, keymlen);
4042         cmd->action = cpu_to_le32(action);
4043
4044         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4045 done:
4046         kfree(cmd);
4047
4048         return rc;
4049 }
4050
4051 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4052                                                 struct ieee80211_vif *vif,
4053                                                 u8 *addr,
4054                                                 struct ieee80211_key_conf *key)
4055 {
4056         struct mwl8k_cmd_set_key *cmd;
4057         int rc;
4058         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4059
4060         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4061         if (cmd == NULL)
4062                 return -ENOMEM;
4063
4064         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4065         if (rc < 0)
4066                 goto done;
4067
4068         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4069                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4070                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4071
4072         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4073
4074         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4075 done:
4076         kfree(cmd);
4077
4078         return rc;
4079 }
4080
4081 static int mwl8k_set_key(struct ieee80211_hw *hw,
4082                          enum set_key_cmd cmd_param,
4083                          struct ieee80211_vif *vif,
4084                          struct ieee80211_sta *sta,
4085                          struct ieee80211_key_conf *key)
4086 {
4087         int rc = 0;
4088         u8 encr_type;
4089         u8 *addr;
4090         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4091
4092         if (vif->type == NL80211_IFTYPE_STATION)
4093                 return -EOPNOTSUPP;
4094
4095         if (sta == NULL)
4096                 addr = hw->wiphy->perm_addr;
4097         else
4098                 addr = sta->addr;
4099
4100         if (cmd_param == SET_KEY) {
4101                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4102                 if (rc)
4103                         goto out;
4104
4105                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4106                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4107                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4108                 else
4109                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4110
4111                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4112                                                                 encr_type);
4113                 if (rc)
4114                         goto out;
4115
4116                 mwl8k_vif->is_hw_crypto_enabled = true;
4117
4118         } else {
4119                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4120
4121                 if (rc)
4122                         goto out;
4123         }
4124 out:
4125         return rc;
4126 }
4127
4128 /*
4129  * CMD_UPDATE_STADB.
4130  */
4131 struct ewc_ht_info {
4132         __le16  control1;
4133         __le16  control2;
4134         __le16  control3;
4135 } __packed;
4136
4137 struct peer_capability_info {
4138         /* Peer type - AP vs. STA.  */
4139         __u8    peer_type;
4140
4141         /* Basic 802.11 capabilities from assoc resp.  */
4142         __le16  basic_caps;
4143
4144         /* Set if peer supports 802.11n high throughput (HT).  */
4145         __u8    ht_support;
4146
4147         /* Valid if HT is supported.  */
4148         __le16  ht_caps;
4149         __u8    extended_ht_caps;
4150         struct ewc_ht_info      ewc_info;
4151
4152         /* Legacy rate table. Intersection of our rates and peer rates.  */
4153         __u8    legacy_rates[12];
4154
4155         /* HT rate table. Intersection of our rates and peer rates.  */
4156         __u8    ht_rates[16];
4157         __u8    pad[16];
4158
4159         /* If set, interoperability mode, no proprietary extensions.  */
4160         __u8    interop;
4161         __u8    pad2;
4162         __u8    station_id;
4163         __le16  amsdu_enabled;
4164 } __packed;
4165
4166 struct mwl8k_cmd_update_stadb {
4167         struct mwl8k_cmd_pkt header;
4168
4169         /* See STADB_ACTION_TYPE */
4170         __le32  action;
4171
4172         /* Peer MAC address */
4173         __u8    peer_addr[ETH_ALEN];
4174
4175         __le32  reserved;
4176
4177         /* Peer info - valid during add/update.  */
4178         struct peer_capability_info     peer_info;
4179 } __packed;
4180
4181 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4182 #define MWL8K_STA_DB_DEL_ENTRY          2
4183
4184 /* Peer Entry flags - used to define the type of the peer node */
4185 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4186
4187 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4188                                       struct ieee80211_vif *vif,
4189                                       struct ieee80211_sta *sta)
4190 {
4191         struct mwl8k_cmd_update_stadb *cmd;
4192         struct peer_capability_info *p;
4193         u32 rates;
4194         int rc;
4195
4196         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4197         if (cmd == NULL)
4198                 return -ENOMEM;
4199
4200         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4201         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4202         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4203         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4204
4205         p = &cmd->peer_info;
4206         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4207         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4208         p->ht_support = sta->ht_cap.ht_supported;
4209         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4210         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4211                 ((sta->ht_cap.ampdu_density & 7) << 2);
4212         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4213                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4214         else
4215                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4216         legacy_rate_mask_to_array(p->legacy_rates, rates);
4217         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4218         p->interop = 1;
4219         p->amsdu_enabled = 0;
4220
4221         rc = mwl8k_post_cmd(hw, &cmd->header);
4222         kfree(cmd);
4223
4224         return rc ? rc : p->station_id;
4225 }
4226
4227 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4228                                       struct ieee80211_vif *vif, u8 *addr)
4229 {
4230         struct mwl8k_cmd_update_stadb *cmd;
4231         int rc;
4232
4233         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4234         if (cmd == NULL)
4235                 return -ENOMEM;
4236
4237         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4238         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4239         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4240         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4241
4242         rc = mwl8k_post_cmd(hw, &cmd->header);
4243         kfree(cmd);
4244
4245         return rc;
4246 }
4247
4248
4249 /*
4250  * Interrupt handling.
4251  */
4252 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4253 {
4254         struct ieee80211_hw *hw = dev_id;
4255         struct mwl8k_priv *priv = hw->priv;
4256         u32 status;
4257
4258         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4259         if (!status)
4260                 return IRQ_NONE;
4261
4262         if (status & MWL8K_A2H_INT_TX_DONE) {
4263                 status &= ~MWL8K_A2H_INT_TX_DONE;
4264                 tasklet_schedule(&priv->poll_tx_task);
4265         }
4266
4267         if (status & MWL8K_A2H_INT_RX_READY) {
4268                 status &= ~MWL8K_A2H_INT_RX_READY;
4269                 tasklet_schedule(&priv->poll_rx_task);
4270         }
4271
4272         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4273                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4274                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4275         }
4276
4277         if (status)
4278                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4279
4280         if (status & MWL8K_A2H_INT_OPC_DONE) {
4281                 if (priv->hostcmd_wait != NULL)
4282                         complete(priv->hostcmd_wait);
4283         }
4284
4285         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4286                 if (!mutex_is_locked(&priv->fw_mutex) &&
4287                     priv->radio_on && priv->pending_tx_pkts)
4288                         mwl8k_tx_start(priv);
4289         }
4290
4291         return IRQ_HANDLED;
4292 }
4293
4294 static void mwl8k_tx_poll(unsigned long data)
4295 {
4296         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4297         struct mwl8k_priv *priv = hw->priv;
4298         int limit;
4299         int i;
4300
4301         limit = 32;
4302
4303         spin_lock_bh(&priv->tx_lock);
4304
4305         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4306                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4307
4308         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4309                 complete(priv->tx_wait);
4310                 priv->tx_wait = NULL;
4311         }
4312
4313         spin_unlock_bh(&priv->tx_lock);
4314
4315         if (limit) {
4316                 writel(~MWL8K_A2H_INT_TX_DONE,
4317                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4318         } else {
4319                 tasklet_schedule(&priv->poll_tx_task);
4320         }
4321 }
4322
4323 static void mwl8k_rx_poll(unsigned long data)
4324 {
4325         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4326         struct mwl8k_priv *priv = hw->priv;
4327         int limit;
4328
4329         limit = 32;
4330         limit -= rxq_process(hw, 0, limit);
4331         limit -= rxq_refill(hw, 0, limit);
4332
4333         if (limit) {
4334                 writel(~MWL8K_A2H_INT_RX_READY,
4335                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4336         } else {
4337                 tasklet_schedule(&priv->poll_rx_task);
4338         }
4339 }
4340
4341
4342 /*
4343  * Core driver operations.
4344  */
4345 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4346 {
4347         struct mwl8k_priv *priv = hw->priv;
4348         int index = skb_get_queue_mapping(skb);
4349
4350         if (!priv->radio_on) {
4351                 wiphy_debug(hw->wiphy,
4352                             "dropped TX frame since radio disabled\n");
4353                 dev_kfree_skb(skb);
4354                 return;
4355         }
4356
4357         mwl8k_txq_xmit(hw, index, skb);
4358 }
4359
4360 static int mwl8k_start(struct ieee80211_hw *hw)
4361 {
4362         struct mwl8k_priv *priv = hw->priv;
4363         int rc;
4364
4365         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4366                          IRQF_SHARED, MWL8K_NAME, hw);
4367         if (rc) {
4368                 priv->irq = -1;
4369                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4370                 return -EIO;
4371         }
4372         priv->irq = priv->pdev->irq;
4373
4374         /* Enable TX reclaim and RX tasklets.  */
4375         tasklet_enable(&priv->poll_tx_task);
4376         tasklet_enable(&priv->poll_rx_task);
4377
4378         /* Enable interrupts */
4379         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4380         iowrite32(MWL8K_A2H_EVENTS,
4381                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4382
4383         rc = mwl8k_fw_lock(hw);
4384         if (!rc) {
4385                 rc = mwl8k_cmd_radio_enable(hw);
4386
4387                 if (!priv->ap_fw) {
4388                         if (!rc)
4389                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4390
4391                         if (!rc)
4392                                 rc = mwl8k_cmd_set_pre_scan(hw);
4393
4394                         if (!rc)
4395                                 rc = mwl8k_cmd_set_post_scan(hw,
4396                                                 "\x00\x00\x00\x00\x00\x00");
4397                 }
4398
4399                 if (!rc)
4400                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4401
4402                 if (!rc)
4403                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4404
4405                 mwl8k_fw_unlock(hw);
4406         }
4407
4408         if (rc) {
4409                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4410                 free_irq(priv->pdev->irq, hw);
4411                 priv->irq = -1;
4412                 tasklet_disable(&priv->poll_tx_task);
4413                 tasklet_disable(&priv->poll_rx_task);
4414         }
4415
4416         return rc;
4417 }
4418
4419 static void mwl8k_stop(struct ieee80211_hw *hw)
4420 {
4421         struct mwl8k_priv *priv = hw->priv;
4422         int i;
4423
4424         if (!priv->hw_restart_in_progress)
4425                 mwl8k_cmd_radio_disable(hw);
4426
4427         ieee80211_stop_queues(hw);
4428
4429         /* Disable interrupts */
4430         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4431         if (priv->irq != -1) {
4432                 free_irq(priv->pdev->irq, hw);
4433                 priv->irq = -1;
4434         }
4435
4436         /* Stop finalize join worker */
4437         cancel_work_sync(&priv->finalize_join_worker);
4438         cancel_work_sync(&priv->watchdog_ba_handle);
4439         if (priv->beacon_skb != NULL)
4440                 dev_kfree_skb(priv->beacon_skb);
4441
4442         /* Stop TX reclaim and RX tasklets.  */
4443         tasklet_disable(&priv->poll_tx_task);
4444         tasklet_disable(&priv->poll_rx_task);
4445
4446         /* Return all skbs to mac80211 */
4447         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4448                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4449 }
4450
4451 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4452
4453 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4454                                struct ieee80211_vif *vif)
4455 {
4456         struct mwl8k_priv *priv = hw->priv;
4457         struct mwl8k_vif *mwl8k_vif;
4458         u32 macids_supported;
4459         int macid, rc;
4460         struct mwl8k_device_info *di;
4461
4462         /*
4463          * Reject interface creation if sniffer mode is active, as
4464          * STA operation is mutually exclusive with hardware sniffer
4465          * mode.  (Sniffer mode is only used on STA firmware.)
4466          */
4467         if (priv->sniffer_enabled) {
4468                 wiphy_info(hw->wiphy,
4469                            "unable to create STA interface because sniffer mode is enabled\n");
4470                 return -EINVAL;
4471         }
4472
4473         di = priv->device_info;
4474         switch (vif->type) {
4475         case NL80211_IFTYPE_AP:
4476                 if (!priv->ap_fw && di->fw_image_ap) {
4477                         /* we must load the ap fw to meet this request */
4478                         if (!list_empty(&priv->vif_list))
4479                                 return -EBUSY;
4480                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4481                         if (rc)
4482                                 return rc;
4483                 }
4484                 macids_supported = priv->ap_macids_supported;
4485                 break;
4486         case NL80211_IFTYPE_STATION:
4487                 if (priv->ap_fw && di->fw_image_sta) {
4488                         /* we must load the sta fw to meet this request */
4489                         if (!list_empty(&priv->vif_list))
4490                                 return -EBUSY;
4491                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4492                         if (rc)
4493                                 return rc;
4494                 }
4495                 macids_supported = priv->sta_macids_supported;
4496                 break;
4497         default:
4498                 return -EINVAL;
4499         }
4500
4501         macid = ffs(macids_supported & ~priv->macids_used);
4502         if (!macid--)
4503                 return -EBUSY;
4504
4505         /* Setup driver private area. */
4506         mwl8k_vif = MWL8K_VIF(vif);
4507         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4508         mwl8k_vif->vif = vif;
4509         mwl8k_vif->macid = macid;
4510         mwl8k_vif->seqno = 0;
4511         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4512         mwl8k_vif->is_hw_crypto_enabled = false;
4513
4514         /* Set the mac address.  */
4515         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4516
4517         if (priv->ap_fw)
4518                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4519
4520         priv->macids_used |= 1 << mwl8k_vif->macid;
4521         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4522
4523         return 0;
4524 }
4525
4526 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4527 {
4528         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4529         if (!priv->macids_used)
4530                 return;
4531
4532         priv->macids_used &= ~(1 << vif->macid);
4533         list_del(&vif->list);
4534 }
4535
4536 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4537                                    struct ieee80211_vif *vif)
4538 {
4539         struct mwl8k_priv *priv = hw->priv;
4540         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4541
4542         if (priv->ap_fw)
4543                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4544
4545         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4546
4547         mwl8k_remove_vif(priv, mwl8k_vif);
4548 }
4549
4550 static void mwl8k_hw_restart_work(struct work_struct *work)
4551 {
4552         struct mwl8k_priv *priv =
4553                 container_of(work, struct mwl8k_priv, fw_reload);
4554         struct ieee80211_hw *hw = priv->hw;
4555         struct mwl8k_device_info *di;
4556         int rc;
4557
4558         /* If some command is waiting for a response, clear it */
4559         if (priv->hostcmd_wait != NULL) {
4560                 complete(priv->hostcmd_wait);
4561                 priv->hostcmd_wait = NULL;
4562         }
4563
4564         priv->hw_restart_owner = current;
4565         di = priv->device_info;
4566         mwl8k_fw_lock(hw);
4567
4568         if (priv->ap_fw)
4569                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4570         else
4571                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4572
4573         if (rc)
4574                 goto fail;
4575
4576         priv->hw_restart_owner = NULL;
4577         priv->hw_restart_in_progress = false;
4578
4579         /*
4580          * This unlock will wake up the queues and
4581          * also opens the command path for other
4582          * commands
4583          */
4584         mwl8k_fw_unlock(hw);
4585
4586         ieee80211_restart_hw(hw);
4587
4588         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4589
4590         return;
4591 fail:
4592         mwl8k_fw_unlock(hw);
4593
4594         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4595 }
4596
4597 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4598 {
4599         struct ieee80211_conf *conf = &hw->conf;
4600         struct mwl8k_priv *priv = hw->priv;
4601         int rc;
4602
4603         if (conf->flags & IEEE80211_CONF_IDLE) {
4604                 mwl8k_cmd_radio_disable(hw);
4605                 return 0;
4606         }
4607
4608         rc = mwl8k_fw_lock(hw);
4609         if (rc)
4610                 return rc;
4611
4612         rc = mwl8k_cmd_radio_enable(hw);
4613         if (rc)
4614                 goto out;
4615
4616         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4617         if (rc)
4618                 goto out;
4619
4620         if (conf->power_level > 18)
4621                 conf->power_level = 18;
4622
4623         if (priv->ap_fw) {
4624
4625                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4626                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4627                         if (rc)
4628                                 goto out;
4629                 }
4630
4631                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4632                 if (rc)
4633                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4634                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4635                 if (rc)
4636                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4637
4638         } else {
4639                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4640                 if (rc)
4641                         goto out;
4642                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4643         }
4644
4645 out:
4646         mwl8k_fw_unlock(hw);
4647
4648         return rc;
4649 }
4650
4651 static void
4652 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4653                            struct ieee80211_bss_conf *info, u32 changed)
4654 {
4655         struct mwl8k_priv *priv = hw->priv;
4656         u32 ap_legacy_rates = 0;
4657         u8 ap_mcs_rates[16];
4658         int rc;
4659
4660         if (mwl8k_fw_lock(hw))
4661                 return;
4662
4663         /*
4664          * No need to capture a beacon if we're no longer associated.
4665          */
4666         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4667                 priv->capture_beacon = false;
4668
4669         /*
4670          * Get the AP's legacy and MCS rates.
4671          */
4672         if (vif->bss_conf.assoc) {
4673                 struct ieee80211_sta *ap;
4674
4675                 rcu_read_lock();
4676
4677                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4678                 if (ap == NULL) {
4679                         rcu_read_unlock();
4680                         goto out;
4681                 }
4682
4683                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4684                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4685                 } else {
4686                         ap_legacy_rates =
4687                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4688                 }
4689                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4690
4691                 rcu_read_unlock();
4692         }
4693
4694         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4695                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4696                 if (rc)
4697                         goto out;
4698
4699                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4700                 if (rc)
4701                         goto out;
4702         }
4703
4704         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4705                 rc = mwl8k_set_radio_preamble(hw,
4706                                 vif->bss_conf.use_short_preamble);
4707                 if (rc)
4708                         goto out;
4709         }
4710
4711         if (changed & BSS_CHANGED_ERP_SLOT) {
4712                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4713                 if (rc)
4714                         goto out;
4715         }
4716
4717         if (vif->bss_conf.assoc &&
4718             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4719                         BSS_CHANGED_HT))) {
4720                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4721                 if (rc)
4722                         goto out;
4723         }
4724
4725         if (vif->bss_conf.assoc &&
4726             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4727                 /*
4728                  * Finalize the join.  Tell rx handler to process
4729                  * next beacon from our BSSID.
4730                  */
4731                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4732                 priv->capture_beacon = true;
4733         }
4734
4735 out:
4736         mwl8k_fw_unlock(hw);
4737 }
4738
4739 static void
4740 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4741                           struct ieee80211_bss_conf *info, u32 changed)
4742 {
4743         int rc;
4744
4745         if (mwl8k_fw_lock(hw))
4746                 return;
4747
4748         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4749                 rc = mwl8k_set_radio_preamble(hw,
4750                                 vif->bss_conf.use_short_preamble);
4751                 if (rc)
4752                         goto out;
4753         }
4754
4755         if (changed & BSS_CHANGED_BASIC_RATES) {
4756                 int idx;
4757                 int rate;
4758
4759                 /*
4760                  * Use lowest supported basic rate for multicasts
4761                  * and management frames (such as probe responses --
4762                  * beacons will always go out at 1 Mb/s).
4763                  */
4764                 idx = ffs(vif->bss_conf.basic_rates);
4765                 if (idx)
4766                         idx--;
4767
4768                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4769                         rate = mwl8k_rates_24[idx].hw_value;
4770                 else
4771                         rate = mwl8k_rates_50[idx].hw_value;
4772
4773                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4774         }
4775
4776         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4777                 struct sk_buff *skb;
4778
4779                 skb = ieee80211_beacon_get(hw, vif);
4780                 if (skb != NULL) {
4781                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4782                         kfree_skb(skb);
4783                 }
4784         }
4785
4786         if (changed & BSS_CHANGED_BEACON_ENABLED)
4787                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4788
4789 out:
4790         mwl8k_fw_unlock(hw);
4791 }
4792
4793 static void
4794 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4795                        struct ieee80211_bss_conf *info, u32 changed)
4796 {
4797         struct mwl8k_priv *priv = hw->priv;
4798
4799         if (!priv->ap_fw)
4800                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4801         else
4802                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4803 }
4804
4805 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4806                                    struct netdev_hw_addr_list *mc_list)
4807 {
4808         struct mwl8k_cmd_pkt *cmd;
4809
4810         /*
4811          * Synthesize and return a command packet that programs the
4812          * hardware multicast address filter.  At this point we don't
4813          * know whether FIF_ALLMULTI is being requested, but if it is,
4814          * we'll end up throwing this packet away and creating a new
4815          * one in mwl8k_configure_filter().
4816          */
4817         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4818
4819         return (unsigned long)cmd;
4820 }
4821
4822 static int
4823 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4824                                unsigned int changed_flags,
4825                                unsigned int *total_flags)
4826 {
4827         struct mwl8k_priv *priv = hw->priv;
4828
4829         /*
4830          * Hardware sniffer mode is mutually exclusive with STA
4831          * operation, so refuse to enable sniffer mode if a STA
4832          * interface is active.
4833          */
4834         if (!list_empty(&priv->vif_list)) {
4835                 if (net_ratelimit())
4836                         wiphy_info(hw->wiphy,
4837                                    "not enabling sniffer mode because STA interface is active\n");
4838                 return 0;
4839         }
4840
4841         if (!priv->sniffer_enabled) {
4842                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4843                         return 0;
4844                 priv->sniffer_enabled = true;
4845         }
4846
4847         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4848                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4849                         FIF_OTHER_BSS;
4850
4851         return 1;
4852 }
4853
4854 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4855 {
4856         if (!list_empty(&priv->vif_list))
4857                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4858
4859         return NULL;
4860 }
4861
4862 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4863                                    unsigned int changed_flags,
4864                                    unsigned int *total_flags,
4865                                    u64 multicast)
4866 {
4867         struct mwl8k_priv *priv = hw->priv;
4868         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4869
4870         /*
4871          * AP firmware doesn't allow fine-grained control over
4872          * the receive filter.
4873          */
4874         if (priv->ap_fw) {
4875                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4876                 kfree(cmd);
4877                 return;
4878         }
4879
4880         /*
4881          * Enable hardware sniffer mode if FIF_CONTROL or
4882          * FIF_OTHER_BSS is requested.
4883          */
4884         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4885             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4886                 kfree(cmd);
4887                 return;
4888         }
4889
4890         /* Clear unsupported feature flags */
4891         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4892
4893         if (mwl8k_fw_lock(hw)) {
4894                 kfree(cmd);
4895                 return;
4896         }
4897
4898         if (priv->sniffer_enabled) {
4899                 mwl8k_cmd_enable_sniffer(hw, 0);
4900                 priv->sniffer_enabled = false;
4901         }
4902
4903         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4904                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4905                         /*
4906                          * Disable the BSS filter.
4907                          */
4908                         mwl8k_cmd_set_pre_scan(hw);
4909                 } else {
4910                         struct mwl8k_vif *mwl8k_vif;
4911                         const u8 *bssid;
4912
4913                         /*
4914                          * Enable the BSS filter.
4915                          *
4916                          * If there is an active STA interface, use that
4917                          * interface's BSSID, otherwise use a dummy one
4918                          * (where the OUI part needs to be nonzero for
4919                          * the BSSID to be accepted by POST_SCAN).
4920                          */
4921                         mwl8k_vif = mwl8k_first_vif(priv);
4922                         if (mwl8k_vif != NULL)
4923                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4924                         else
4925                                 bssid = "\x01\x00\x00\x00\x00\x00";
4926
4927                         mwl8k_cmd_set_post_scan(hw, bssid);
4928                 }
4929         }
4930
4931         /*
4932          * If FIF_ALLMULTI is being requested, throw away the command
4933          * packet that ->prepare_multicast() built and replace it with
4934          * a command packet that enables reception of all multicast
4935          * packets.
4936          */
4937         if (*total_flags & FIF_ALLMULTI) {
4938                 kfree(cmd);
4939                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4940         }
4941
4942         if (cmd != NULL) {
4943                 mwl8k_post_cmd(hw, cmd);
4944                 kfree(cmd);
4945         }
4946
4947         mwl8k_fw_unlock(hw);
4948 }
4949
4950 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4951 {
4952         return mwl8k_cmd_set_rts_threshold(hw, value);
4953 }
4954
4955 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4956                             struct ieee80211_vif *vif,
4957                             struct ieee80211_sta *sta)
4958 {
4959         struct mwl8k_priv *priv = hw->priv;
4960
4961         if (priv->ap_fw)
4962                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4963         else
4964                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4965 }
4966
4967 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4968                          struct ieee80211_vif *vif,
4969                          struct ieee80211_sta *sta)
4970 {
4971         struct mwl8k_priv *priv = hw->priv;
4972         int ret;
4973         int i;
4974         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4975         struct ieee80211_key_conf *key;
4976
4977         if (!priv->ap_fw) {
4978                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4979                 if (ret >= 0) {
4980                         MWL8K_STA(sta)->peer_id = ret;
4981                         if (sta->ht_cap.ht_supported)
4982                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
4983                         ret = 0;
4984                 }
4985
4986         } else {
4987                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4988         }
4989
4990         for (i = 0; i < NUM_WEP_KEYS; i++) {
4991                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4992                 if (mwl8k_vif->wep_key_conf[i].enabled)
4993                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4994         }
4995         return ret;
4996 }
4997
4998 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
4999                          struct ieee80211_vif *vif, u16 queue,
5000                          const struct ieee80211_tx_queue_params *params)
5001 {
5002         struct mwl8k_priv *priv = hw->priv;
5003         int rc;
5004
5005         rc = mwl8k_fw_lock(hw);
5006         if (!rc) {
5007                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5008                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5009
5010                 if (!priv->wmm_enabled)
5011                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5012
5013                 if (!rc) {
5014                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5015                         rc = mwl8k_cmd_set_edca_params(hw, q,
5016                                                        params->cw_min,
5017                                                        params->cw_max,
5018                                                        params->aifs,
5019                                                        params->txop);
5020                 }
5021
5022                 mwl8k_fw_unlock(hw);
5023         }
5024
5025         return rc;
5026 }
5027
5028 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5029                            struct ieee80211_low_level_stats *stats)
5030 {
5031         return mwl8k_cmd_get_stat(hw, stats);
5032 }
5033
5034 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5035                                 struct survey_info *survey)
5036 {
5037         struct mwl8k_priv *priv = hw->priv;
5038         struct ieee80211_conf *conf = &hw->conf;
5039
5040         if (idx != 0)
5041                 return -ENOENT;
5042
5043         survey->channel = conf->channel;
5044         survey->filled = SURVEY_INFO_NOISE_DBM;
5045         survey->noise = priv->noise;
5046
5047         return 0;
5048 }
5049
5050 #define MAX_AMPDU_ATTEMPTS 5
5051
5052 static int
5053 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5054                    enum ieee80211_ampdu_mlme_action action,
5055                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5056                    u8 buf_size)
5057 {
5058
5059         int i, rc = 0;
5060         struct mwl8k_priv *priv = hw->priv;
5061         struct mwl8k_ampdu_stream *stream;
5062         u8 *addr = sta->addr;
5063
5064         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5065                 return -ENOTSUPP;
5066
5067         spin_lock(&priv->stream_lock);
5068         stream = mwl8k_lookup_stream(hw, addr, tid);
5069
5070         switch (action) {
5071         case IEEE80211_AMPDU_RX_START:
5072         case IEEE80211_AMPDU_RX_STOP:
5073                 break;
5074         case IEEE80211_AMPDU_TX_START:
5075                 /* By the time we get here the hw queues may contain outgoing
5076                  * packets for this RA/TID that are not part of this BA
5077                  * session.  The hw will assign sequence numbers to these
5078                  * packets as they go out.  So if we query the hw for its next
5079                  * sequence number and use that for the SSN here, it may end up
5080                  * being wrong, which will lead to sequence number mismatch at
5081                  * the recipient.  To avoid this, we reset the sequence number
5082                  * to O for the first MPDU in this BA stream.
5083                  */
5084                 *ssn = 0;
5085                 if (stream == NULL) {
5086                         /* This means that somebody outside this driver called
5087                          * ieee80211_start_tx_ba_session.  This is unexpected
5088                          * because we do our own rate control.  Just warn and
5089                          * move on.
5090                          */
5091                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5092                                    "Proceeding anyway.\n", __func__);
5093                         stream = mwl8k_add_stream(hw, sta, tid);
5094                 }
5095                 if (stream == NULL) {
5096                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5097                         rc = -EBUSY;
5098                         break;
5099                 }
5100                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5101
5102                 /* Release the lock before we do the time consuming stuff */
5103                 spin_unlock(&priv->stream_lock);
5104                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5105                         rc = mwl8k_check_ba(hw, stream);
5106
5107                         /* If HW restart is in progress mwl8k_post_cmd will
5108                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5109                          * such cases
5110                          */
5111                         if (!rc || rc == -EBUSY)
5112                                 break;
5113                         /*
5114                          * HW queues take time to be flushed, give them
5115                          * sufficient time
5116                          */
5117
5118                         msleep(1000);
5119                 }
5120                 spin_lock(&priv->stream_lock);
5121                 if (rc) {
5122                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5123                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5124                         mwl8k_remove_stream(hw, stream);
5125                         rc = -EBUSY;
5126                         break;
5127                 }
5128                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5129                 break;
5130         case IEEE80211_AMPDU_TX_STOP:
5131                 if (stream) {
5132                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5133                                 spin_unlock(&priv->stream_lock);
5134                                 mwl8k_destroy_ba(hw, stream);
5135                                 spin_lock(&priv->stream_lock);
5136                         }
5137                         mwl8k_remove_stream(hw, stream);
5138                 }
5139                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5140                 break;
5141         case IEEE80211_AMPDU_TX_OPERATIONAL:
5142                 BUG_ON(stream == NULL);
5143                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5144                 spin_unlock(&priv->stream_lock);
5145                 rc = mwl8k_create_ba(hw, stream, buf_size);
5146                 spin_lock(&priv->stream_lock);
5147                 if (!rc)
5148                         stream->state = AMPDU_STREAM_ACTIVE;
5149                 else {
5150                         spin_unlock(&priv->stream_lock);
5151                         mwl8k_destroy_ba(hw, stream);
5152                         spin_lock(&priv->stream_lock);
5153                         wiphy_debug(hw->wiphy,
5154                                 "Failed adding stream for sta %pM tid %d\n",
5155                                 addr, tid);
5156                         mwl8k_remove_stream(hw, stream);
5157                 }
5158                 break;
5159
5160         default:
5161                 rc = -ENOTSUPP;
5162         }
5163
5164         spin_unlock(&priv->stream_lock);
5165         return rc;
5166 }
5167
5168 static const struct ieee80211_ops mwl8k_ops = {
5169         .tx                     = mwl8k_tx,
5170         .start                  = mwl8k_start,
5171         .stop                   = mwl8k_stop,
5172         .add_interface          = mwl8k_add_interface,
5173         .remove_interface       = mwl8k_remove_interface,
5174         .config                 = mwl8k_config,
5175         .bss_info_changed       = mwl8k_bss_info_changed,
5176         .prepare_multicast      = mwl8k_prepare_multicast,
5177         .configure_filter       = mwl8k_configure_filter,
5178         .set_key                = mwl8k_set_key,
5179         .set_rts_threshold      = mwl8k_set_rts_threshold,
5180         .sta_add                = mwl8k_sta_add,
5181         .sta_remove             = mwl8k_sta_remove,
5182         .conf_tx                = mwl8k_conf_tx,
5183         .get_stats              = mwl8k_get_stats,
5184         .get_survey             = mwl8k_get_survey,
5185         .ampdu_action           = mwl8k_ampdu_action,
5186 };
5187
5188 static void mwl8k_finalize_join_worker(struct work_struct *work)
5189 {
5190         struct mwl8k_priv *priv =
5191                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5192         struct sk_buff *skb = priv->beacon_skb;
5193         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5194         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5195         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5196                                          mgmt->u.beacon.variable, len);
5197         int dtim_period = 1;
5198
5199         if (tim && tim[1] >= 2)
5200                 dtim_period = tim[3];
5201
5202         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5203
5204         dev_kfree_skb(skb);
5205         priv->beacon_skb = NULL;
5206 }
5207
5208 enum {
5209         MWL8363 = 0,
5210         MWL8687,
5211         MWL8366,
5212 };
5213
5214 #define MWL8K_8366_AP_FW_API 2
5215 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5216 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5217
5218 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5219         [MWL8363] = {
5220                 .part_name      = "88w8363",
5221                 .helper_image   = "mwl8k/helper_8363.fw",
5222                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5223         },
5224         [MWL8687] = {
5225                 .part_name      = "88w8687",
5226                 .helper_image   = "mwl8k/helper_8687.fw",
5227                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5228         },
5229         [MWL8366] = {
5230                 .part_name      = "88w8366",
5231                 .helper_image   = "mwl8k/helper_8366.fw",
5232                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5233                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5234                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5235                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5236         },
5237 };
5238
5239 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5240 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5241 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5242 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5243 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5244 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5245 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5246
5247 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5248         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5249         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5250         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5251         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5252         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5253         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5254         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5255         { },
5256 };
5257 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5258
5259 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5260 {
5261         int rc;
5262         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5263                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5264                priv->fw_pref, priv->fw_alt);
5265         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5266         if (rc) {
5267                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5268                        pci_name(priv->pdev), priv->fw_alt);
5269                 return rc;
5270         }
5271         return 0;
5272 }
5273
5274 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5275 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5276 {
5277         struct mwl8k_priv *priv = context;
5278         struct mwl8k_device_info *di = priv->device_info;
5279         int rc;
5280
5281         switch (priv->fw_state) {
5282         case FW_STATE_INIT:
5283                 if (!fw) {
5284                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5285                                pci_name(priv->pdev), di->helper_image);
5286                         goto fail;
5287                 }
5288                 priv->fw_helper = fw;
5289                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5290                                       true);
5291                 if (rc && priv->fw_alt) {
5292                         rc = mwl8k_request_alt_fw(priv);
5293                         if (rc)
5294                                 goto fail;
5295                         priv->fw_state = FW_STATE_LOADING_ALT;
5296                 } else if (rc)
5297                         goto fail;
5298                 else
5299                         priv->fw_state = FW_STATE_LOADING_PREF;
5300                 break;
5301
5302         case FW_STATE_LOADING_PREF:
5303                 if (!fw) {
5304                         if (priv->fw_alt) {
5305                                 rc = mwl8k_request_alt_fw(priv);
5306                                 if (rc)
5307                                         goto fail;
5308                                 priv->fw_state = FW_STATE_LOADING_ALT;
5309                         } else
5310                                 goto fail;
5311                 } else {
5312                         priv->fw_ucode = fw;
5313                         rc = mwl8k_firmware_load_success(priv);
5314                         if (rc)
5315                                 goto fail;
5316                         else
5317                                 complete(&priv->firmware_loading_complete);
5318                 }
5319                 break;
5320
5321         case FW_STATE_LOADING_ALT:
5322                 if (!fw) {
5323                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5324                                pci_name(priv->pdev), di->helper_image);
5325                         goto fail;
5326                 }
5327                 priv->fw_ucode = fw;
5328                 rc = mwl8k_firmware_load_success(priv);
5329                 if (rc)
5330                         goto fail;
5331                 else
5332                         complete(&priv->firmware_loading_complete);
5333                 break;
5334
5335         default:
5336                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5337                        MWL8K_NAME, priv->fw_state);
5338                 BUG_ON(1);
5339         }
5340
5341         return;
5342
5343 fail:
5344         priv->fw_state = FW_STATE_ERROR;
5345         complete(&priv->firmware_loading_complete);
5346         device_release_driver(&priv->pdev->dev);
5347         mwl8k_release_firmware(priv);
5348 }
5349
5350 #define MAX_RESTART_ATTEMPTS 1
5351 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5352                                bool nowait)
5353 {
5354         struct mwl8k_priv *priv = hw->priv;
5355         int rc;
5356         int count = MAX_RESTART_ATTEMPTS;
5357
5358 retry:
5359         /* Reset firmware and hardware */
5360         mwl8k_hw_reset(priv);
5361
5362         /* Ask userland hotplug daemon for the device firmware */
5363         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5364         if (rc) {
5365                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5366                 return rc;
5367         }
5368
5369         if (nowait)
5370                 return rc;
5371
5372         /* Load firmware into hardware */
5373         rc = mwl8k_load_firmware(hw);
5374         if (rc)
5375                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5376
5377         /* Reclaim memory once firmware is successfully loaded */
5378         mwl8k_release_firmware(priv);
5379
5380         if (rc && count) {
5381                 /* FW did not start successfully;
5382                  * lets try one more time
5383                  */
5384                 count--;
5385                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5386                 msleep(20);
5387                 goto retry;
5388         }
5389
5390         return rc;
5391 }
5392
5393 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5394 {
5395         struct mwl8k_priv *priv = hw->priv;
5396         int rc = 0;
5397         int i;
5398
5399         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5400                 rc = mwl8k_txq_init(hw, i);
5401                 if (rc)
5402                         break;
5403                 if (priv->ap_fw)
5404                         iowrite32(priv->txq[i].txd_dma,
5405                                   priv->sram + priv->txq_offset[i]);
5406         }
5407         return rc;
5408 }
5409
5410 /* initialize hw after successfully loading a firmware image */
5411 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5412 {
5413         struct mwl8k_priv *priv = hw->priv;
5414         int rc = 0;
5415         int i;
5416
5417         if (priv->ap_fw) {
5418                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5419                 if (priv->rxd_ops == NULL) {
5420                         wiphy_err(hw->wiphy,
5421                                   "Driver does not have AP firmware image support for this hardware\n");
5422                         goto err_stop_firmware;
5423                 }
5424         } else {
5425                 priv->rxd_ops = &rxd_sta_ops;
5426         }
5427
5428         priv->sniffer_enabled = false;
5429         priv->wmm_enabled = false;
5430         priv->pending_tx_pkts = 0;
5431
5432         rc = mwl8k_rxq_init(hw, 0);
5433         if (rc)
5434                 goto err_stop_firmware;
5435         rxq_refill(hw, 0, INT_MAX);
5436
5437         /* For the sta firmware, we need to know the dma addresses of tx queues
5438          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5439          * prior to issuing this command.  But for the AP case, we learn the
5440          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5441          * case we must initialize the tx queues after.
5442          */
5443         priv->num_ampdu_queues = 0;
5444         if (!priv->ap_fw) {
5445                 rc = mwl8k_init_txqs(hw);
5446                 if (rc)
5447                         goto err_free_queues;
5448         }
5449
5450         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5451         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5452         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5453                   MWL8K_A2H_INT_BA_WATCHDOG,
5454                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5455         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5456                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5457
5458         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5459                          IRQF_SHARED, MWL8K_NAME, hw);
5460         if (rc) {
5461                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5462                 goto err_free_queues;
5463         }
5464
5465         /*
5466          * When hw restart is requested,
5467          * mac80211 will take care of clearing
5468          * the ampdu streams, so do not clear
5469          * the ampdu state here
5470          */
5471         if (!priv->hw_restart_in_progress)
5472                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5473
5474         /*
5475          * Temporarily enable interrupts.  Initial firmware host
5476          * commands use interrupts and avoid polling.  Disable
5477          * interrupts when done.
5478          */
5479         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5480
5481         /* Get config data, mac addrs etc */
5482         if (priv->ap_fw) {
5483                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5484                 if (!rc)
5485                         rc = mwl8k_init_txqs(hw);
5486                 if (!rc)
5487                         rc = mwl8k_cmd_set_hw_spec(hw);
5488         } else {
5489                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5490         }
5491         if (rc) {
5492                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5493                 goto err_free_irq;
5494         }
5495
5496         /* Turn radio off */
5497         rc = mwl8k_cmd_radio_disable(hw);
5498         if (rc) {
5499                 wiphy_err(hw->wiphy, "Cannot disable\n");
5500                 goto err_free_irq;
5501         }
5502
5503         /* Clear MAC address */
5504         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5505         if (rc) {
5506                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5507                 goto err_free_irq;
5508         }
5509
5510         /* Disable interrupts */
5511         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5512         free_irq(priv->pdev->irq, hw);
5513
5514         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5515                    priv->device_info->part_name,
5516                    priv->hw_rev, hw->wiphy->perm_addr,
5517                    priv->ap_fw ? "AP" : "STA",
5518                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5519                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5520
5521         return 0;
5522
5523 err_free_irq:
5524         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5525         free_irq(priv->pdev->irq, hw);
5526
5527 err_free_queues:
5528         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5529                 mwl8k_txq_deinit(hw, i);
5530         mwl8k_rxq_deinit(hw, 0);
5531
5532 err_stop_firmware:
5533         mwl8k_hw_reset(priv);
5534
5535         return rc;
5536 }
5537
5538 /*
5539  * invoke mwl8k_reload_firmware to change the firmware image after the device
5540  * has already been registered
5541  */
5542 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5543 {
5544         int i, rc = 0;
5545         struct mwl8k_priv *priv = hw->priv;
5546         struct mwl8k_vif *vif, *tmp_vif;
5547
5548         mwl8k_stop(hw);
5549         mwl8k_rxq_deinit(hw, 0);
5550
5551         /*
5552          * All the existing interfaces are re-added by the ieee80211_reconfig;
5553          * which means driver should remove existing interfaces before calling
5554          * ieee80211_restart_hw
5555          */
5556         if (priv->hw_restart_in_progress)
5557                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5558                         mwl8k_remove_vif(priv, vif);
5559
5560         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5561                 mwl8k_txq_deinit(hw, i);
5562
5563         rc = mwl8k_init_firmware(hw, fw_image, false);
5564         if (rc)
5565                 goto fail;
5566
5567         rc = mwl8k_probe_hw(hw);
5568         if (rc)
5569                 goto fail;
5570
5571         if (priv->hw_restart_in_progress)
5572                 return rc;
5573
5574         rc = mwl8k_start(hw);
5575         if (rc)
5576                 goto fail;
5577
5578         rc = mwl8k_config(hw, ~0);
5579         if (rc)
5580                 goto fail;
5581
5582         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5583                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5584                 if (rc)
5585                         goto fail;
5586         }
5587
5588         return rc;
5589
5590 fail:
5591         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5592         return rc;
5593 }
5594
5595 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5596 {
5597         struct ieee80211_hw *hw = priv->hw;
5598         int i, rc;
5599
5600         rc = mwl8k_load_firmware(hw);
5601         mwl8k_release_firmware(priv);
5602         if (rc) {
5603                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5604                 return rc;
5605         }
5606
5607         /*
5608          * Extra headroom is the size of the required DMA header
5609          * minus the size of the smallest 802.11 frame (CTS frame).
5610          */
5611         hw->extra_tx_headroom =
5612                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5613
5614         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5615
5616         hw->channel_change_time = 10;
5617
5618         hw->queues = MWL8K_TX_WMM_QUEUES;
5619
5620         /* Set rssi values to dBm */
5621         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5622
5623         /*
5624          * Ask mac80211 to not to trigger PS mode
5625          * based on PM bit of incoming frames.
5626          */
5627         if (priv->ap_fw)
5628                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5629
5630         hw->vif_data_size = sizeof(struct mwl8k_vif);
5631         hw->sta_data_size = sizeof(struct mwl8k_sta);
5632
5633         priv->macids_used = 0;
5634         INIT_LIST_HEAD(&priv->vif_list);
5635
5636         /* Set default radio state and preamble */
5637         priv->radio_on = false;
5638         priv->radio_short_preamble = false;
5639
5640         /* Finalize join worker */
5641         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5642         /* Handle watchdog ba events */
5643         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5644         /* To reload the firmware if it crashes */
5645         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5646
5647         /* TX reclaim and RX tasklets.  */
5648         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5649         tasklet_disable(&priv->poll_tx_task);
5650         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5651         tasklet_disable(&priv->poll_rx_task);
5652
5653         /* Power management cookie */
5654         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5655         if (priv->cookie == NULL)
5656                 return -ENOMEM;
5657
5658         mutex_init(&priv->fw_mutex);
5659         priv->fw_mutex_owner = NULL;
5660         priv->fw_mutex_depth = 0;
5661         priv->hostcmd_wait = NULL;
5662
5663         spin_lock_init(&priv->tx_lock);
5664
5665         spin_lock_init(&priv->stream_lock);
5666
5667         priv->tx_wait = NULL;
5668
5669         rc = mwl8k_probe_hw(hw);
5670         if (rc)
5671                 goto err_free_cookie;
5672
5673         hw->wiphy->interface_modes = 0;
5674         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5675                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5676         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5677                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5678
5679         rc = ieee80211_register_hw(hw);
5680         if (rc) {
5681                 wiphy_err(hw->wiphy, "Cannot register device\n");
5682                 goto err_unprobe_hw;
5683         }
5684
5685         return 0;
5686
5687 err_unprobe_hw:
5688         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5689                 mwl8k_txq_deinit(hw, i);
5690         mwl8k_rxq_deinit(hw, 0);
5691
5692 err_free_cookie:
5693         if (priv->cookie != NULL)
5694                 pci_free_consistent(priv->pdev, 4,
5695                                 priv->cookie, priv->cookie_dma);
5696
5697         return rc;
5698 }
5699 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5700                                  const struct pci_device_id *id)
5701 {
5702         static int printed_version;
5703         struct ieee80211_hw *hw;
5704         struct mwl8k_priv *priv;
5705         struct mwl8k_device_info *di;
5706         int rc;
5707
5708         if (!printed_version) {
5709                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5710                 printed_version = 1;
5711         }
5712
5713
5714         rc = pci_enable_device(pdev);
5715         if (rc) {
5716                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5717                        MWL8K_NAME);
5718                 return rc;
5719         }
5720
5721         rc = pci_request_regions(pdev, MWL8K_NAME);
5722         if (rc) {
5723                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5724                        MWL8K_NAME);
5725                 goto err_disable_device;
5726         }
5727
5728         pci_set_master(pdev);
5729
5730
5731         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5732         if (hw == NULL) {
5733                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5734                 rc = -ENOMEM;
5735                 goto err_free_reg;
5736         }
5737
5738         SET_IEEE80211_DEV(hw, &pdev->dev);
5739         pci_set_drvdata(pdev, hw);
5740
5741         priv = hw->priv;
5742         priv->hw = hw;
5743         priv->pdev = pdev;
5744         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5745
5746
5747         priv->sram = pci_iomap(pdev, 0, 0x10000);
5748         if (priv->sram == NULL) {
5749                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5750                 goto err_iounmap;
5751         }
5752
5753         /*
5754          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5755          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5756          */
5757         priv->regs = pci_iomap(pdev, 1, 0x10000);
5758         if (priv->regs == NULL) {
5759                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5760                 if (priv->regs == NULL) {
5761                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5762                         goto err_iounmap;
5763                 }
5764         }
5765
5766         /*
5767          * Choose the initial fw image depending on user input.  If a second
5768          * image is available, make it the alternative image that will be
5769          * loaded if the first one fails.
5770          */
5771         init_completion(&priv->firmware_loading_complete);
5772         di = priv->device_info;
5773         if (ap_mode_default && di->fw_image_ap) {
5774                 priv->fw_pref = di->fw_image_ap;
5775                 priv->fw_alt = di->fw_image_sta;
5776         } else if (!ap_mode_default && di->fw_image_sta) {
5777                 priv->fw_pref = di->fw_image_sta;
5778                 priv->fw_alt = di->fw_image_ap;
5779         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5780                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5781                 priv->fw_pref = di->fw_image_sta;
5782         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5783                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5784                 priv->fw_pref = di->fw_image_ap;
5785         }
5786         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5787         if (rc)
5788                 goto err_stop_firmware;
5789
5790         priv->hw_restart_in_progress = false;
5791
5792         return rc;
5793
5794 err_stop_firmware:
5795         mwl8k_hw_reset(priv);
5796
5797 err_iounmap:
5798         if (priv->regs != NULL)
5799                 pci_iounmap(pdev, priv->regs);
5800
5801         if (priv->sram != NULL)
5802                 pci_iounmap(pdev, priv->sram);
5803
5804         pci_set_drvdata(pdev, NULL);
5805         ieee80211_free_hw(hw);
5806
5807 err_free_reg:
5808         pci_release_regions(pdev);
5809
5810 err_disable_device:
5811         pci_disable_device(pdev);
5812
5813         return rc;
5814 }
5815
5816 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5817 {
5818         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5819 }
5820
5821 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5822 {
5823         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5824         struct mwl8k_priv *priv;
5825         int i;
5826
5827         if (hw == NULL)
5828                 return;
5829         priv = hw->priv;
5830
5831         wait_for_completion(&priv->firmware_loading_complete);
5832
5833         if (priv->fw_state == FW_STATE_ERROR) {
5834                 mwl8k_hw_reset(priv);
5835                 goto unmap;
5836         }
5837
5838         ieee80211_stop_queues(hw);
5839
5840         ieee80211_unregister_hw(hw);
5841
5842         /* Remove TX reclaim and RX tasklets.  */
5843         tasklet_kill(&priv->poll_tx_task);
5844         tasklet_kill(&priv->poll_rx_task);
5845
5846         /* Stop hardware */
5847         mwl8k_hw_reset(priv);
5848
5849         /* Return all skbs to mac80211 */
5850         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5851                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5852
5853         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5854                 mwl8k_txq_deinit(hw, i);
5855
5856         mwl8k_rxq_deinit(hw, 0);
5857
5858         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5859
5860 unmap:
5861         pci_iounmap(pdev, priv->regs);
5862         pci_iounmap(pdev, priv->sram);
5863         pci_set_drvdata(pdev, NULL);
5864         ieee80211_free_hw(hw);
5865         pci_release_regions(pdev);
5866         pci_disable_device(pdev);
5867 }
5868
5869 static struct pci_driver mwl8k_driver = {
5870         .name           = MWL8K_NAME,
5871         .id_table       = mwl8k_pci_id_table,
5872         .probe          = mwl8k_probe,
5873         .remove         = __devexit_p(mwl8k_remove),
5874         .shutdown       = __devexit_p(mwl8k_shutdown),
5875 };
5876
5877 static int __init mwl8k_init(void)
5878 {
5879         return pci_register_driver(&mwl8k_driver);
5880 }
5881
5882 static void __exit mwl8k_exit(void)
5883 {
5884         pci_unregister_driver(&mwl8k_driver);
5885 }
5886
5887 module_init(mwl8k_init);
5888 module_exit(mwl8k_exit);
5889
5890 MODULE_DESCRIPTION(MWL8K_DESC);
5891 MODULE_VERSION(MWL8K_VERSION);
5892 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5893 MODULE_LICENSE("GPL");