Pileus Git - ~andy/linux/blob - drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.13"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 /* txpriorities are mapped with hw queues.
 105  * Each hw queue has a txpriority.
 106  */
 107 #define TOTAL_HW_TX_QUEUES      8
 108
 109 /* Each HW queue can have one AMPDU stream.
 110  * But, because one of the hw queue is reserved,
 111  * maximum AMPDU queues that can be created are
 112  * one short of total tx queues.
 113  */
 114 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
 115
 116 struct rxd_ops {
 117         int rxd_size;
 118         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 119         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 120         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 121                            __le16 *qos, s8 *noise);
 122 };
 123
 124 struct mwl8k_device_info {
 125         char *part_name;
 126         char *helper_image;
 127         char *fw_image_sta;
 128         char *fw_image_ap;
 129         struct rxd_ops *ap_rxd_ops;
 130         u32 fw_api_ap;
 131 };
 132
 133 struct mwl8k_rx_queue {
 134         int rxd_count;
 135
 136         /* hw receives here */
 137         int head;
 138
 139         /* refill descs here */
 140         int tail;
 141
 142         void *rxd;
 143         dma_addr_t rxd_dma;
 144         struct {
 145                 struct sk_buff *skb;
 146                 DEFINE_DMA_UNMAP_ADDR(dma);
 147         } *buf;
 148 };
 149
 150 struct mwl8k_tx_queue {
 151         /* hw transmits here */
 152         int head;
 153
 154         /* sw appends here */
 155         int tail;
 156
 157         unsigned int len;
 158         struct mwl8k_tx_desc *txd;
 159         dma_addr_t txd_dma;
 160         struct sk_buff **skb;
 161 };
 162
 163 enum {
 164         AMPDU_NO_STREAM,
 165         AMPDU_STREAM_NEW,
 166         AMPDU_STREAM_IN_PROGRESS,
 167         AMPDU_STREAM_ACTIVE,
 168 };
 169
 170 struct mwl8k_ampdu_stream {
 171         struct ieee80211_sta *sta;
 172         u8 tid;
 173         u8 state;
 174         u8 idx;
 175 };
 176
 177 struct mwl8k_priv {
 178         struct ieee80211_hw *hw;
 179         struct pci_dev *pdev;
 180         int irq;
 181
 182         struct mwl8k_device_info *device_info;
 183
 184         void __iomem *sram;
 185         void __iomem *regs;
 186
 187         /* firmware */
 188         const struct firmware *fw_helper;
 189         const struct firmware *fw_ucode;
 190
 191         /* hardware/firmware parameters */
 192         bool ap_fw;
 193         struct rxd_ops *rxd_ops;
 194         struct ieee80211_supported_band band_24;
 195         struct ieee80211_channel channels_24[14];
 196         struct ieee80211_rate rates_24[14];
 197         struct ieee80211_supported_band band_50;
 198         struct ieee80211_channel channels_50[4];
 199         struct ieee80211_rate rates_50[9];
 200         u32 ap_macids_supported;
 201         u32 sta_macids_supported;
 202
 203         /* Ampdu stream information */
 204         u8 num_ampdu_queues;
 205         spinlock_t stream_lock;
 206         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 207         struct work_struct watchdog_ba_handle;
 208
 209         /* firmware access */
 210         struct mutex fw_mutex;
 211         struct task_struct *fw_mutex_owner;
 212         struct task_struct *hw_restart_owner;
 213         int fw_mutex_depth;
 214         struct completion *hostcmd_wait;
 215
 216         atomic_t watchdog_event_pending;
 217
 218         /* lock held over TX and TX reap */
 219         spinlock_t tx_lock;
 220
 221         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 222         struct completion *tx_wait;
 223
 224         /* List of interfaces.  */
 225         u32 macids_used;
 226         struct list_head vif_list;
 227
 228         /* power management status cookie from firmware */
 229         u32 *cookie;
 230         dma_addr_t cookie_dma;
 231
 232         u16 num_mcaddrs;
 233         u8 hw_rev;
 234         u32 fw_rev;
 235
 236         /*
 237          * Running count of TX packets in flight, to avoid
 238          * iterating over the transmit rings each time.
 239          */
 240         int pending_tx_pkts;
 241
 242         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 243         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 244         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 245
 246         bool radio_on;
 247         bool radio_short_preamble;
 248         bool sniffer_enabled;
 249         bool wmm_enabled;
 250
 251         /* XXX need to convert this to handle multiple interfaces */
 252         bool capture_beacon;
 253         u8 capture_bssid[ETH_ALEN];
 254         struct sk_buff *beacon_skb;
 255
 256         /*
 257          * This FJ worker has to be global as it is scheduled from the
 258          * RX handler.  At this point we don't know which interface it
 259          * belongs to until the list of bssids waiting to complete join
 260          * is checked.
 261          */
 262         struct work_struct finalize_join_worker;
 263
 264         /* Tasklet to perform TX reclaim.  */
 265         struct tasklet_struct poll_tx_task;
 266
 267         /* Tasklet to perform RX.  */
 268         struct tasklet_struct poll_rx_task;
 269
 270         /* Most recently reported noise in dBm */
 271         s8 noise;
 272
 273         /*
 274          * preserve the queue configurations so they can be restored if/when
 275          * the firmware image is swapped.
 276          */
 277         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 278
 279         /* To perform the task of reloading the firmware */
 280         struct work_struct fw_reload;
 281         bool hw_restart_in_progress;
 282
 283         /* async firmware loading state */
 284         unsigned fw_state;
 285         char *fw_pref;
 286         char *fw_alt;
 287         struct completion firmware_loading_complete;
 288
 289         /* bitmap of running BSSes */
 290         u32 running_bsses;
 291 };
 292
 293 #define MAX_WEP_KEY_LEN         13
 294 #define NUM_WEP_KEYS            4
 295
 296 /* Per interface specific private data */
 297 struct mwl8k_vif {
 298         struct list_head list;
 299         struct ieee80211_vif *vif;
 300
 301         /* Firmware macid for this vif.  */
 302         int macid;
 303
 304         /* Non AMPDU sequence number assigned by driver.  */
 305         u16 seqno;
 306
 307         /* Saved WEP keys */
 308         struct {
 309                 u8 enabled;
 310                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 311         } wep_key_conf[NUM_WEP_KEYS];
 312
 313         /* BSSID */
 314         u8 bssid[ETH_ALEN];
 315
 316         /* A flag to indicate is HW crypto is enabled for this bssid */
 317         bool is_hw_crypto_enabled;
 318 };
 319 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 320 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 321
 322 struct tx_traffic_info {
 323         u32 start_time;
 324         u32 pkts;
 325 };
 326
 327 #define MWL8K_MAX_TID 8
 328 struct mwl8k_sta {
 329         /* Index into station database. Returned by UPDATE_STADB.  */
 330         u8 peer_id;
 331         u8 is_ampdu_allowed;
 332         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 333 };
 334 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 335
 336 static const struct ieee80211_channel mwl8k_channels_24[] = {
 337         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
 338         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
 339         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
 340         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
 341         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
 342         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
 343         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
 344         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
 345         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
 346         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
 347         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
 348         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
 349         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
 350         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
 351 };
 352
 353 static const struct ieee80211_rate mwl8k_rates_24[] = {
 354         { .bitrate = 10, .hw_value = 2, },
 355         { .bitrate = 20, .hw_value = 4, },
 356         { .bitrate = 55, .hw_value = 11, },
 357         { .bitrate = 110, .hw_value = 22, },
 358         { .bitrate = 220, .hw_value = 44, },
 359         { .bitrate = 60, .hw_value = 12, },
 360         { .bitrate = 90, .hw_value = 18, },
 361         { .bitrate = 120, .hw_value = 24, },
 362         { .bitrate = 180, .hw_value = 36, },
 363         { .bitrate = 240, .hw_value = 48, },
 364         { .bitrate = 360, .hw_value = 72, },
 365         { .bitrate = 480, .hw_value = 96, },
 366         { .bitrate = 540, .hw_value = 108, },
 367         { .bitrate = 720, .hw_value = 144, },
 368 };
 369
 370 static const struct ieee80211_channel mwl8k_channels_50[] = {
 371         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
 372         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
 373         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
 374         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
 375 };
 376
 377 static const struct ieee80211_rate mwl8k_rates_50[] = {
 378         { .bitrate = 60, .hw_value = 12, },
 379         { .bitrate = 90, .hw_value = 18, },
 380         { .bitrate = 120, .hw_value = 24, },
 381         { .bitrate = 180, .hw_value = 36, },
 382         { .bitrate = 240, .hw_value = 48, },
 383         { .bitrate = 360, .hw_value = 72, },
 384         { .bitrate = 480, .hw_value = 96, },
 385         { .bitrate = 540, .hw_value = 108, },
 386         { .bitrate = 720, .hw_value = 144, },
 387 };
 388
 389 /* Set or get info from Firmware */
 390 #define MWL8K_CMD_GET                   0x0000
 391 #define MWL8K_CMD_SET                   0x0001
 392 #define MWL8K_CMD_SET_LIST              0x0002
 393
 394 /* Firmware command codes */
 395 #define MWL8K_CMD_CODE_DNLD             0x0001
 396 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 397 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 398 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 399 #define MWL8K_CMD_GET_STAT              0x0014
 400 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 401 #define MWL8K_CMD_RF_TX_POWER           0x001e
 402 #define MWL8K_CMD_TX_POWER              0x001f
 403 #define MWL8K_CMD_RF_ANTENNA            0x0020
 404 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 405 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 406 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 407 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 408 #define MWL8K_CMD_SET_AID               0x010d
 409 #define MWL8K_CMD_SET_RATE              0x0110
 410 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 411 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 412 #define MWL8K_CMD_SET_SLOT              0x0114
 413 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 414 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 415 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 416 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 417 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 418 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 419 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 420 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 421 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 422 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 423 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 424 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 425 #define MWL8K_CMD_UPDATE_STADB          0x1123
 426 #define MWL8K_CMD_BASTREAM              0x1125
 427
 428 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 429 {
 430         u16 command = le16_to_cpu(cmd);
 431
 432 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 433                                         snprintf(buf, bufsize, "%s", #x);\
 434                                         return buf;\
 435                                         } while (0)
 436         switch (command & ~0x8000) {
 437                 MWL8K_CMDNAME(CODE_DNLD);
 438                 MWL8K_CMDNAME(GET_HW_SPEC);
 439                 MWL8K_CMDNAME(SET_HW_SPEC);
 440                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 441                 MWL8K_CMDNAME(GET_STAT);
 442                 MWL8K_CMDNAME(RADIO_CONTROL);
 443                 MWL8K_CMDNAME(RF_TX_POWER);
 444                 MWL8K_CMDNAME(TX_POWER);
 445                 MWL8K_CMDNAME(RF_ANTENNA);
 446                 MWL8K_CMDNAME(SET_BEACON);
 447                 MWL8K_CMDNAME(SET_PRE_SCAN);
 448                 MWL8K_CMDNAME(SET_POST_SCAN);
 449                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 450                 MWL8K_CMDNAME(SET_AID);
 451                 MWL8K_CMDNAME(SET_RATE);
 452                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 453                 MWL8K_CMDNAME(RTS_THRESHOLD);
 454                 MWL8K_CMDNAME(SET_SLOT);
 455                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 456                 MWL8K_CMDNAME(SET_WMM_MODE);
 457                 MWL8K_CMDNAME(MIMO_CONFIG);
 458                 MWL8K_CMDNAME(USE_FIXED_RATE);
 459                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 460                 MWL8K_CMDNAME(SET_MAC_ADDR);
 461                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 462                 MWL8K_CMDNAME(BSS_START);
 463                 MWL8K_CMDNAME(SET_NEW_STN);
 464                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 465                 MWL8K_CMDNAME(UPDATE_STADB);
 466                 MWL8K_CMDNAME(BASTREAM);
 467                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 468         default:
 469                 snprintf(buf, bufsize, "0x%x", cmd);
 470         }
 471 #undef MWL8K_CMDNAME
 472
 473         return buf;
 474 }
 475
 476 /* Hardware and firmware reset */
 477 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 478 {
 479         iowrite32(MWL8K_H2A_INT_RESET,
 480                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 481         iowrite32(MWL8K_H2A_INT_RESET,
 482                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 483         msleep(20);
 484 }
 485
 486 /* Release fw image */
 487 static void mwl8k_release_fw(const struct firmware **fw)
 488 {
 489         if (*fw == NULL)
 490                 return;
 491         release_firmware(*fw);
 492         *fw = NULL;
 493 }
 494
 495 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 496 {
 497         mwl8k_release_fw(&priv->fw_ucode);
 498         mwl8k_release_fw(&priv->fw_helper);
 499 }
 500
 501 /* states for asynchronous f/w loading */
 502 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 503 enum {
 504         FW_STATE_INIT = 0,
 505         FW_STATE_LOADING_PREF,
 506         FW_STATE_LOADING_ALT,
 507         FW_STATE_ERROR,
 508 };
 509
 510 /* Request fw image */
 511 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 512                             const char *fname, const struct firmware **fw,
 513                             bool nowait)
 514 {
 515         /* release current image */
 516         if (*fw != NULL)
 517                 mwl8k_release_fw(fw);
 518
 519         if (nowait)
 520                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 521                                                &priv->pdev->dev, GFP_KERNEL,
 522                                                priv, mwl8k_fw_state_machine);
 523         else
 524                 return request_firmware(fw, fname, &priv->pdev->dev);
 525 }
 526
 527 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 528                                   bool nowait)
 529 {
 530         struct mwl8k_device_info *di = priv->device_info;
 531         int rc;
 532
 533         if (di->helper_image != NULL) {
 534                 if (nowait)
 535                         rc = mwl8k_request_fw(priv, di->helper_image,
 536                                               &priv->fw_helper, true);
 537                 else
 538                         rc = mwl8k_request_fw(priv, di->helper_image,
 539                                               &priv->fw_helper, false);
 540                 if (rc)
 541                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 542                                pci_name(priv->pdev), di->helper_image);
 543
 544                 if (rc || nowait)
 545                         return rc;
 546         }
 547
 548         if (nowait) {
 549                 /*
 550                  * if we get here, no helper image is needed.  Skip the
 551                  * FW_STATE_INIT state.
 552                  */
 553                 priv->fw_state = FW_STATE_LOADING_PREF;
 554                 rc = mwl8k_request_fw(priv, fw_image,
 555                                       &priv->fw_ucode,
 556                                       true);
 557         } else
 558                 rc = mwl8k_request_fw(priv, fw_image,
 559                                       &priv->fw_ucode, false);
 560         if (rc) {
 561                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 562                        pci_name(priv->pdev), fw_image);
 563                 mwl8k_release_fw(&priv->fw_helper);
 564                 return rc;
 565         }
 566
 567         return 0;
 568 }
 569
 570 struct mwl8k_cmd_pkt {
 571         __le16  code;
 572         __le16  length;
 573         __u8    seq_num;
 574         __u8    macid;
 575         __le16  result;
 576         char    payload[0];
 577 } __packed;
 578
 579 /*
 580  * Firmware loading.
 581  */
 582 static int
 583 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 584 {
 585         void __iomem *regs = priv->regs;
 586         dma_addr_t dma_addr;
 587         int loops;
 588
 589         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 590         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 591                 return -ENOMEM;
 592
 593         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 594         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 595         iowrite32(MWL8K_H2A_INT_DOORBELL,
 596                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 597         iowrite32(MWL8K_H2A_INT_DUMMY,
 598                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 599
 600         loops = 1000;
 601         do {
 602                 u32 int_code;
 603
 604                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 605                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 606                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 607                         break;
 608                 }
 609
 610                 cond_resched();
 611                 udelay(1);
 612         } while (--loops);
 613
 614         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 615
 616         return loops ? 0 : -ETIMEDOUT;
 617 }
 618
 619 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 620                                 const u8 *data, size_t length)
 621 {
 622         struct mwl8k_cmd_pkt *cmd;
 623         int done;
 624         int rc = 0;
 625
 626         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 627         if (cmd == NULL)
 628                 return -ENOMEM;
 629
 630         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 631         cmd->seq_num = 0;
 632         cmd->macid = 0;
 633         cmd->result = 0;
 634
 635         done = 0;
 636         while (length) {
 637                 int block_size = length > 256 ? 256 : length;
 638
 639                 memcpy(cmd->payload, data + done, block_size);
 640                 cmd->length = cpu_to_le16(block_size);
 641
 642                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 643                                                 sizeof(*cmd) + block_size);
 644                 if (rc)
 645                         break;
 646
 647                 done += block_size;
 648                 length -= block_size;
 649         }
 650
 651         if (!rc) {
 652                 cmd->length = 0;
 653                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 654         }
 655
 656         kfree(cmd);
 657
 658         return rc;
 659 }
 660
 661 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 662                                 const u8 *data, size_t length)
 663 {
 664         unsigned char *buffer;
 665         int may_continue, rc = 0;
 666         u32 done, prev_block_size;
 667
 668         buffer = kmalloc(1024, GFP_KERNEL);
 669         if (buffer == NULL)
 670                 return -ENOMEM;
 671
 672         done = 0;
 673         prev_block_size = 0;
 674         may_continue = 1000;
 675         while (may_continue > 0) {
 676                 u32 block_size;
 677
 678                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 679                 if (block_size & 1) {
 680                         block_size &= ~1;
 681                         may_continue--;
 682                 } else {
 683                         done += prev_block_size;
 684                         length -= prev_block_size;
 685                 }
 686
 687                 if (block_size > 1024 || block_size > length) {
 688                         rc = -EOVERFLOW;
 689                         break;
 690                 }
 691
 692                 if (length == 0) {
 693                         rc = 0;
 694                         break;
 695                 }
 696
 697                 if (block_size == 0) {
 698                         rc = -EPROTO;
 699                         may_continue--;
 700                         udelay(1);
 701                         continue;
 702                 }
 703
 704                 prev_block_size = block_size;
 705                 memcpy(buffer, data + done, block_size);
 706
 707                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 708                 if (rc)
 709                         break;
 710         }
 711
 712         if (!rc && length != 0)
 713                 rc = -EREMOTEIO;
 714
 715         kfree(buffer);
 716
 717         return rc;
 718 }
 719
 720 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 721 {
 722         struct mwl8k_priv *priv = hw->priv;
 723         const struct firmware *fw = priv->fw_ucode;
 724         int rc;
 725         int loops;
 726
 727         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 728                 const struct firmware *helper = priv->fw_helper;
 729
 730                 if (helper == NULL) {
 731                         printk(KERN_ERR "%s: helper image needed but none "
 732                                "given\n", pci_name(priv->pdev));
 733                         return -EINVAL;
 734                 }
 735
 736                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 737                 if (rc) {
 738                         printk(KERN_ERR "%s: unable to load firmware "
 739                                "helper image\n", pci_name(priv->pdev));
 740                         return rc;
 741                 }
 742                 msleep(20);
 743
 744                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 745         } else {
 746                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 747         }
 748
 749         if (rc) {
 750                 printk(KERN_ERR "%s: unable to load firmware image\n",
 751                        pci_name(priv->pdev));
 752                 return rc;
 753         }
 754
 755         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 756
 757         loops = 500000;
 758         do {
 759                 u32 ready_code;
 760
 761                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 762                 if (ready_code == MWL8K_FWAP_READY) {
 763                         priv->ap_fw = true;
 764                         break;
 765                 } else if (ready_code == MWL8K_FWSTA_READY) {
 766                         priv->ap_fw = false;
 767                         break;
 768                 }
 769
 770                 cond_resched();
 771                 udelay(1);
 772         } while (--loops);
 773
 774         return loops ? 0 : -ETIMEDOUT;
 775 }
 776
 777
 778 /* DMA header used by firmware and hardware.  */
 779 struct mwl8k_dma_data {
 780         __le16 fwlen;
 781         struct ieee80211_hdr wh;
 782         char data[0];
 783 } __packed;
 784
 785 /* Routines to add/remove DMA header from skb.  */
 786 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 787 {
 788         struct mwl8k_dma_data *tr;
 789         int hdrlen;
 790
 791         tr = (struct mwl8k_dma_data *)skb->data;
 792         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 793
 794         if (hdrlen != sizeof(tr->wh)) {
 795                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 796                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 797                         *((__le16 *)(tr->data - 2)) = qos;
 798                 } else {
 799                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 800                 }
 801         }
 802
 803         if (hdrlen != sizeof(*tr))
 804                 skb_pull(skb, sizeof(*tr) - hdrlen);
 805 }
 806
 807 #define REDUCED_TX_HEADROOM     8
 808
 809 static void
 810 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 811                                                 int head_pad, int tail_pad)
 812 {
 813         struct ieee80211_hdr *wh;
 814         int hdrlen;
 815         int reqd_hdrlen;
 816         struct mwl8k_dma_data *tr;
 817
 818         /*
 819          * Add a firmware DMA header; the firmware requires that we
 820          * present a 2-byte payload length followed by a 4-address
 821          * header (without QoS field), followed (optionally) by any
 822          * WEP/ExtIV header (but only filled in for CCMP).
 823          */
 824         wh = (struct ieee80211_hdr *)skb->data;
 825
 826         hdrlen = ieee80211_hdrlen(wh->frame_control);
 827
 828         /*
 829          * Check if skb_resize is required because of
 830          * tx_headroom adjustment.
 831          */
 832         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 833                                                 + REDUCED_TX_HEADROOM))) {
 834                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 835
 836                         wiphy_err(priv->hw->wiphy,
 837                                         "Failed to reallocate TX buffer\n");
 838                         return;
 839                 }
 840                 skb->truesize += REDUCED_TX_HEADROOM;
 841         }
 842
 843         reqd_hdrlen = sizeof(*tr) + head_pad;
 844
 845         if (hdrlen != reqd_hdrlen)
 846                 skb_push(skb, reqd_hdrlen - hdrlen);
 847
 848         if (ieee80211_is_data_qos(wh->frame_control))
 849                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 850
 851         tr = (struct mwl8k_dma_data *)skb->data;
 852         if (wh != &tr->wh)
 853                 memmove(&tr->wh, wh, hdrlen);
 854         if (hdrlen != sizeof(tr->wh))
 855                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 856
 857         /*
 858          * Firmware length is the length of the fully formed "802.11
 859          * payload".  That is, everything except for the 802.11 header.
 860          * This includes all crypto material including the MIC.
 861          */
 862         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 863 }
 864
 865 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 866                 struct sk_buff *skb)
 867 {
 868         struct ieee80211_hdr *wh;
 869         struct ieee80211_tx_info *tx_info;
 870         struct ieee80211_key_conf *key_conf;
 871         int data_pad;
 872         int head_pad = 0;
 873
 874         wh = (struct ieee80211_hdr *)skb->data;
 875
 876         tx_info = IEEE80211_SKB_CB(skb);
 877
 878         key_conf = NULL;
 879         if (ieee80211_is_data(wh->frame_control))
 880                 key_conf = tx_info->control.hw_key;
 881
 882         /*
 883          * Make sure the packet header is in the DMA header format (4-address
 884          * without QoS), and add head & tail padding when HW crypto is enabled.
 885          *
 886          * We have the following trailer padding requirements:
 887          * - WEP: 4 trailer bytes (ICV)
 888          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 889          * - CCMP: 8 trailer bytes (MIC)
 890          */
 891         data_pad = 0;
 892         if (key_conf != NULL) {
 893                 head_pad = key_conf->iv_len;
 894                 switch (key_conf->cipher) {
 895                 case WLAN_CIPHER_SUITE_WEP40:
 896                 case WLAN_CIPHER_SUITE_WEP104:
 897                         data_pad = 4;
 898                         break;
 899                 case WLAN_CIPHER_SUITE_TKIP:
 900                         data_pad = 12;
 901                         break;
 902                 case WLAN_CIPHER_SUITE_CCMP:
 903                         data_pad = 8;
 904                         break;
 905                 }
 906         }
 907         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 908 }
 909
 910 /*
 911  * Packet reception for 88w8366 AP firmware.
 912  */
 913 struct mwl8k_rxd_8366_ap {
 914         __le16 pkt_len;
 915         __u8 sq2;
 916         __u8 rate;
 917         __le32 pkt_phys_addr;
 918         __le32 next_rxd_phys_addr;
 919         __le16 qos_control;
 920         __le16 htsig2;
 921         __le32 hw_rssi_info;
 922         __le32 hw_noise_floor_info;
 923         __u8 noise_floor;
 924         __u8 pad0[3];
 925         __u8 rssi;
 926         __u8 rx_status;
 927         __u8 channel;
 928         __u8 rx_ctrl;
 929 } __packed;
 930
 931 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 932 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 933 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 934
 935 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 936
 937 /* 8366 AP rx_status bits */
 938 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 939 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 940 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 941 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 942 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 943
 944 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 945 {
 946         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 947
 948         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 949         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 950 }
 951
 952 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 953 {
 954         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 955
 956         rxd->pkt_len = cpu_to_le16(len);
 957         rxd->pkt_phys_addr = cpu_to_le32(addr);
 958         wmb();
 959         rxd->rx_ctrl = 0;
 960 }
 961
 962 static int
 963 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 964                           __le16 *qos, s8 *noise)
 965 {
 966         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 967
 968         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 969                 return -1;
 970         rmb();
 971
 972         memset(status, 0, sizeof(*status));
 973
 974         status->signal = -rxd->rssi;
 975         *noise = -rxd->noise_floor;
 976
 977         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 978                 status->flag |= RX_FLAG_HT;
 979                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 980                         status->flag |= RX_FLAG_40MHZ;
 981                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 982         } else {
 983                 int i;
 984
 985                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 986                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 987                                 status->rate_idx = i;
 988                                 break;
 989                         }
 990                 }
 991         }
 992
 993         if (rxd->channel > 14) {
 994                 status->band = IEEE80211_BAND_5GHZ;
 995                 if (!(status->flag & RX_FLAG_HT))
 996                         status->rate_idx -= 5;
 997         } else {
 998                 status->band = IEEE80211_BAND_2GHZ;
 999         }
1000         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1001                                                       status->band);
1002
1003         *qos = rxd->qos_control;
1004
1005         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1006             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1007             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1008                 status->flag |= RX_FLAG_MMIC_ERROR;
1009
1010         return le16_to_cpu(rxd->pkt_len);
1011 }
1012
1013 static struct rxd_ops rxd_8366_ap_ops = {
1014         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
1015         .rxd_init       = mwl8k_rxd_8366_ap_init,
1016         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1017         .rxd_process    = mwl8k_rxd_8366_ap_process,
1018 };
1019
1020 /*
1021  * Packet reception for STA firmware.
1022  */
1023 struct mwl8k_rxd_sta {
1024         __le16 pkt_len;
1025         __u8 link_quality;
1026         __u8 noise_level;
1027         __le32 pkt_phys_addr;
1028         __le32 next_rxd_phys_addr;
1029         __le16 qos_control;
1030         __le16 rate_info;
1031         __le32 pad0[4];
1032         __u8 rssi;
1033         __u8 channel;
1034         __le16 pad1;
1035         __u8 rx_ctrl;
1036         __u8 rx_status;
1037         __u8 pad2[2];
1038 } __packed;
1039
1040 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1041 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1042 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1043 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1044 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1045 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1046
1047 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1048 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1049 /* ICV=0 or MIC=1 */
1050 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1051 /* Key is uploaded only in failure case */
1052 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1053
1054 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1055 {
1056         struct mwl8k_rxd_sta *rxd = _rxd;
1057
1058         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1059         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1060 }
1061
1062 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1063 {
1064         struct mwl8k_rxd_sta *rxd = _rxd;
1065
1066         rxd->pkt_len = cpu_to_le16(len);
1067         rxd->pkt_phys_addr = cpu_to_le32(addr);
1068         wmb();
1069         rxd->rx_ctrl = 0;
1070 }
1071
1072 static int
1073 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1074                        __le16 *qos, s8 *noise)
1075 {
1076         struct mwl8k_rxd_sta *rxd = _rxd;
1077         u16 rate_info;
1078
1079         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1080                 return -1;
1081         rmb();
1082
1083         rate_info = le16_to_cpu(rxd->rate_info);
1084
1085         memset(status, 0, sizeof(*status));
1086
1087         status->signal = -rxd->rssi;
1088         *noise = -rxd->noise_level;
1089         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1090         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1091
1092         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1093                 status->flag |= RX_FLAG_SHORTPRE;
1094         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1095                 status->flag |= RX_FLAG_40MHZ;
1096         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1097                 status->flag |= RX_FLAG_SHORT_GI;
1098         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1099                 status->flag |= RX_FLAG_HT;
1100
1101         if (rxd->channel > 14) {
1102                 status->band = IEEE80211_BAND_5GHZ;
1103                 if (!(status->flag & RX_FLAG_HT))
1104                         status->rate_idx -= 5;
1105         } else {
1106                 status->band = IEEE80211_BAND_2GHZ;
1107         }
1108         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1109                                                       status->band);
1110
1111         *qos = rxd->qos_control;
1112         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1113             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1114                 status->flag |= RX_FLAG_MMIC_ERROR;
1115
1116         return le16_to_cpu(rxd->pkt_len);
1117 }
1118
1119 static struct rxd_ops rxd_sta_ops = {
1120         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1121         .rxd_init       = mwl8k_rxd_sta_init,
1122         .rxd_refill     = mwl8k_rxd_sta_refill,
1123         .rxd_process    = mwl8k_rxd_sta_process,
1124 };
1125
1126
1127 #define MWL8K_RX_DESCS          256
1128 #define MWL8K_RX_MAXSZ          3800
1129
1130 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1131 {
1132         struct mwl8k_priv *priv = hw->priv;
1133         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1134         int size;
1135         int i;
1136
1137         rxq->rxd_count = 0;
1138         rxq->head = 0;
1139         rxq->tail = 0;
1140
1141         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1142
1143         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1144         if (rxq->rxd == NULL) {
1145                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1146                 return -ENOMEM;
1147         }
1148         memset(rxq->rxd, 0, size);
1149
1150         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1151         if (rxq->buf == NULL) {
1152                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1153                 return -ENOMEM;
1154         }
1155
1156         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1157                 int desc_size;
1158                 void *rxd;
1159                 int nexti;
1160                 dma_addr_t next_dma_addr;
1161
1162                 desc_size = priv->rxd_ops->rxd_size;
1163                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1164
1165                 nexti = i + 1;
1166                 if (nexti == MWL8K_RX_DESCS)
1167                         nexti = 0;
1168                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1169
1170                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1171         }
1172
1173         return 0;
1174 }
1175
1176 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1177 {
1178         struct mwl8k_priv *priv = hw->priv;
1179         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1180         int refilled;
1181
1182         refilled = 0;
1183         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1184                 struct sk_buff *skb;
1185                 dma_addr_t addr;
1186                 int rx;
1187                 void *rxd;
1188
1189                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1190                 if (skb == NULL)
1191                         break;
1192
1193                 addr = pci_map_single(priv->pdev, skb->data,
1194                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1195
1196                 rxq->rxd_count++;
1197                 rx = rxq->tail++;
1198                 if (rxq->tail == MWL8K_RX_DESCS)
1199                         rxq->tail = 0;
1200                 rxq->buf[rx].skb = skb;
1201                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1202
1203                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1204                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1205
1206                 refilled++;
1207         }
1208
1209         return refilled;
1210 }
1211
1212 /* Must be called only when the card's reception is completely halted */
1213 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1214 {
1215         struct mwl8k_priv *priv = hw->priv;
1216         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1217         int i;
1218
1219         if (rxq->rxd == NULL)
1220                 return;
1221
1222         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1223                 if (rxq->buf[i].skb != NULL) {
1224                         pci_unmap_single(priv->pdev,
1225                                          dma_unmap_addr(&rxq->buf[i], dma),
1226                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1227                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1228
1229                         kfree_skb(rxq->buf[i].skb);
1230                         rxq->buf[i].skb = NULL;
1231                 }
1232         }
1233
1234         kfree(rxq->buf);
1235         rxq->buf = NULL;
1236
1237         pci_free_consistent(priv->pdev,
1238                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1239                             rxq->rxd, rxq->rxd_dma);
1240         rxq->rxd = NULL;
1241 }
1242
1243
1244 /*
1245  * Scan a list of BSSIDs to process for finalize join.
1246  * Allows for extension to process multiple BSSIDs.
1247  */
1248 static inline int
1249 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1250 {
1251         return priv->capture_beacon &&
1252                 ieee80211_is_beacon(wh->frame_control) &&
1253                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1254 }
1255
1256 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1257                                      struct sk_buff *skb)
1258 {
1259         struct mwl8k_priv *priv = hw->priv;
1260
1261         priv->capture_beacon = false;
1262         memset(priv->capture_bssid, 0, ETH_ALEN);
1263
1264         /*
1265          * Use GFP_ATOMIC as rxq_process is called from
1266          * the primary interrupt handler, memory allocation call
1267          * must not sleep.
1268          */
1269         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1270         if (priv->beacon_skb != NULL)
1271                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1272 }
1273
1274 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1275                                                    u8 *bssid)
1276 {
1277         struct mwl8k_vif *mwl8k_vif;
1278
1279         list_for_each_entry(mwl8k_vif,
1280                             vif_list, list) {
1281                 if (memcmp(bssid, mwl8k_vif->bssid,
1282                            ETH_ALEN) == 0)
1283                         return mwl8k_vif;
1284         }
1285
1286         return NULL;
1287 }
1288
1289 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1290 {
1291         struct mwl8k_priv *priv = hw->priv;
1292         struct mwl8k_vif *mwl8k_vif = NULL;
1293         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1294         int processed;
1295
1296         processed = 0;
1297         while (rxq->rxd_count && limit--) {
1298                 struct sk_buff *skb;
1299                 void *rxd;
1300                 int pkt_len;
1301                 struct ieee80211_rx_status status;
1302                 struct ieee80211_hdr *wh;
1303                 __le16 qos;
1304
1305                 skb = rxq->buf[rxq->head].skb;
1306                 if (skb == NULL)
1307                         break;
1308
1309                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1310
1311                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1312                                                         &priv->noise);
1313                 if (pkt_len < 0)
1314                         break;
1315
1316                 rxq->buf[rxq->head].skb = NULL;
1317
1318                 pci_unmap_single(priv->pdev,
1319                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1320                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1321                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1322
1323                 rxq->head++;
1324                 if (rxq->head == MWL8K_RX_DESCS)
1325                         rxq->head = 0;
1326
1327                 rxq->rxd_count--;
1328
1329                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1330
1331                 /*
1332                  * Check for a pending join operation.  Save a
1333                  * copy of the beacon and schedule a tasklet to
1334                  * send a FINALIZE_JOIN command to the firmware.
1335                  */
1336                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1337                         mwl8k_save_beacon(hw, skb);
1338
1339                 if (ieee80211_has_protected(wh->frame_control)) {
1340
1341                         /* Check if hw crypto has been enabled for
1342                          * this bss. If yes, set the status flags
1343                          * accordingly
1344                          */
1345                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1346                                                                 wh->addr1);
1347
1348                         if (mwl8k_vif != NULL &&
1349                             mwl8k_vif->is_hw_crypto_enabled) {
1350                                 /*
1351                                  * When MMIC ERROR is encountered
1352                                  * by the firmware, payload is
1353                                  * dropped and only 32 bytes of
1354                                  * mwl8k Firmware header is sent
1355                                  * to the host.
1356                                  *
1357                                  * We need to add four bytes of
1358                                  * key information.  In it
1359                                  * MAC80211 expects keyidx set to
1360                                  * 0 for triggering Counter
1361                                  * Measure of MMIC failure.
1362                                  */
1363                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1364                                         struct mwl8k_dma_data *tr;
1365                                         tr = (struct mwl8k_dma_data *)skb->data;
1366                                         memset((void *)&(tr->data), 0, 4);
1367                                         pkt_len += 4;
1368                                 }
1369
1370                                 if (!ieee80211_is_auth(wh->frame_control))
1371                                         status.flag |= RX_FLAG_IV_STRIPPED |
1372                                                        RX_FLAG_DECRYPTED |
1373                                                        RX_FLAG_MMIC_STRIPPED;
1374                         }
1375                 }
1376
1377                 skb_put(skb, pkt_len);
1378                 mwl8k_remove_dma_header(skb, qos);
1379                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1380                 ieee80211_rx_irqsafe(hw, skb);
1381
1382                 processed++;
1383         }
1384
1385         return processed;
1386 }
1387
1388
1389 /*
1390  * Packet transmission.
1391  */
1392
1393 #define MWL8K_TXD_STATUS_OK                     0x00000001
1394 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1395 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1396 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1397 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1398
1399 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1400 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1401 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1402 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1403 #define MWL8K_QOS_EOSP                          0x0010
1404
1405 struct mwl8k_tx_desc {
1406         __le32 status;
1407         __u8 data_rate;
1408         __u8 tx_priority;
1409         __le16 qos_control;
1410         __le32 pkt_phys_addr;
1411         __le16 pkt_len;
1412         __u8 dest_MAC_addr[ETH_ALEN];
1413         __le32 next_txd_phys_addr;
1414         __le32 timestamp;
1415         __le16 rate_info;
1416         __u8 peer_id;
1417         __u8 tx_frag_cnt;
1418 } __packed;
1419
1420 #define MWL8K_TX_DESCS          128
1421
1422 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1423 {
1424         struct mwl8k_priv *priv = hw->priv;
1425         struct mwl8k_tx_queue *txq = priv->txq + index;
1426         int size;
1427         int i;
1428
1429         txq->len = 0;
1430         txq->head = 0;
1431         txq->tail = 0;
1432
1433         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1434
1435         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1436         if (txq->txd == NULL) {
1437                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1438                 return -ENOMEM;
1439         }
1440         memset(txq->txd, 0, size);
1441
1442         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1443         if (txq->skb == NULL) {
1444                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1445                 return -ENOMEM;
1446         }
1447
1448         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1449                 struct mwl8k_tx_desc *tx_desc;
1450                 int nexti;
1451
1452                 tx_desc = txq->txd + i;
1453                 nexti = (i + 1) % MWL8K_TX_DESCS;
1454
1455                 tx_desc->status = 0;
1456                 tx_desc->next_txd_phys_addr =
1457                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1458         }
1459
1460         return 0;
1461 }
1462
1463 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1464 {
1465         iowrite32(MWL8K_H2A_INT_PPA_READY,
1466                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1467         iowrite32(MWL8K_H2A_INT_DUMMY,
1468                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1469         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1470 }
1471
1472 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1473 {
1474         struct mwl8k_priv *priv = hw->priv;
1475         int i;
1476
1477         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1478                 struct mwl8k_tx_queue *txq = priv->txq + i;
1479                 int fw_owned = 0;
1480                 int drv_owned = 0;
1481                 int unused = 0;
1482                 int desc;
1483
1484                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1485                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1486                         u32 status;
1487
1488                         status = le32_to_cpu(tx_desc->status);
1489                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1490                                 fw_owned++;
1491                         else
1492                                 drv_owned++;
1493
1494                         if (tx_desc->pkt_len == 0)
1495                                 unused++;
1496                 }
1497
1498                 wiphy_err(hw->wiphy,
1499                           "txq[%d] len=%d head=%d tail=%d "
1500                           "fw_owned=%d drv_owned=%d unused=%d\n",
1501                           i,
1502                           txq->len, txq->head, txq->tail,
1503                           fw_owned, drv_owned, unused);
1504         }
1505 }
1506
1507 /*
1508  * Must be called with priv->fw_mutex held and tx queues stopped.
1509  */
1510 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1511
1512 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1513 {
1514         struct mwl8k_priv *priv = hw->priv;
1515         DECLARE_COMPLETION_ONSTACK(tx_wait);
1516         int retry;
1517         int rc;
1518
1519         might_sleep();
1520
1521         /* Since fw restart is in progress, allow only the firmware
1522          * commands from the restart code and block the other
1523          * commands since they are going to fail in any case since
1524          * the firmware has crashed
1525          */
1526         if (priv->hw_restart_in_progress) {
1527                 if (priv->hw_restart_owner == current)
1528                         return 0;
1529                 else
1530                         return -EBUSY;
1531         }
1532
1533         if (atomic_read(&priv->watchdog_event_pending))
1534                 return 0;
1535
1536         /*
1537          * The TX queues are stopped at this point, so this test
1538          * doesn't need to take ->tx_lock.
1539          */
1540         if (!priv->pending_tx_pkts)
1541                 return 0;
1542
1543         retry = 0;
1544         rc = 0;
1545
1546         spin_lock_bh(&priv->tx_lock);
1547         priv->tx_wait = &tx_wait;
1548         while (!rc) {
1549                 int oldcount;
1550                 unsigned long timeout;
1551
1552                 oldcount = priv->pending_tx_pkts;
1553
1554                 spin_unlock_bh(&priv->tx_lock);
1555                 timeout = wait_for_completion_timeout(&tx_wait,
1556                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1557
1558                 if (atomic_read(&priv->watchdog_event_pending)) {
1559                         spin_lock_bh(&priv->tx_lock);
1560                         priv->tx_wait = NULL;
1561                         spin_unlock_bh(&priv->tx_lock);
1562                         return 0;
1563                 }
1564
1565                 spin_lock_bh(&priv->tx_lock);
1566
1567                 if (timeout) {
1568                         WARN_ON(priv->pending_tx_pkts);
1569                         if (retry)
1570                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1571                         break;
1572                 }
1573
1574                 if (priv->pending_tx_pkts < oldcount) {
1575                         wiphy_notice(hw->wiphy,
1576                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1577                                      oldcount, priv->pending_tx_pkts);
1578                         retry = 1;
1579                         continue;
1580                 }
1581
1582                 priv->tx_wait = NULL;
1583
1584                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1585                           MWL8K_TX_WAIT_TIMEOUT_MS);
1586                 mwl8k_dump_tx_rings(hw);
1587                 priv->hw_restart_in_progress = true;
1588                 ieee80211_queue_work(hw, &priv->fw_reload);
1589
1590                 rc = -ETIMEDOUT;
1591         }
1592         priv->tx_wait = NULL;
1593         spin_unlock_bh(&priv->tx_lock);
1594
1595         return rc;
1596 }
1597
1598 #define MWL8K_TXD_SUCCESS(status)                               \
1599         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1600                      MWL8K_TXD_STATUS_OK_RETRY |                \
1601                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1602
1603 static int mwl8k_tid_queue_mapping(u8 tid)
1604 {
1605         BUG_ON(tid > 7);
1606
1607         switch (tid) {
1608         case 0:
1609         case 3:
1610                 return IEEE80211_AC_BE;
1611                 break;
1612         case 1:
1613         case 2:
1614                 return IEEE80211_AC_BK;
1615                 break;
1616         case 4:
1617         case 5:
1618                 return IEEE80211_AC_VI;
1619                 break;
1620         case 6:
1621         case 7:
1622                 return IEEE80211_AC_VO;
1623                 break;
1624         default:
1625                 return -1;
1626                 break;
1627         }
1628 }
1629
1630 /* The firmware will fill in the rate information
1631  * for each packet that gets queued in the hardware
1632  * and these macros will interpret that info.
1633  */
1634
1635 #define RI_FORMAT(a)              (a & 0x0001)
1636 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1637
1638 static int
1639 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1640 {
1641         struct mwl8k_priv *priv = hw->priv;
1642         struct mwl8k_tx_queue *txq = priv->txq + index;
1643         int processed;
1644
1645         processed = 0;
1646         while (txq->len > 0 && limit--) {
1647                 int tx;
1648                 struct mwl8k_tx_desc *tx_desc;
1649                 unsigned long addr;
1650                 int size;
1651                 struct sk_buff *skb;
1652                 struct ieee80211_tx_info *info;
1653                 u32 status;
1654                 struct ieee80211_sta *sta;
1655                 struct mwl8k_sta *sta_info = NULL;
1656                 u16 rate_info;
1657                 struct ieee80211_hdr *wh;
1658
1659                 tx = txq->head;
1660                 tx_desc = txq->txd + tx;
1661
1662                 status = le32_to_cpu(tx_desc->status);
1663
1664                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1665                         if (!force)
1666                                 break;
1667                         tx_desc->status &=
1668                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1669                 }
1670
1671                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1672                 BUG_ON(txq->len == 0);
1673                 txq->len--;
1674                 priv->pending_tx_pkts--;
1675
1676                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1677                 size = le16_to_cpu(tx_desc->pkt_len);
1678                 skb = txq->skb[tx];
1679                 txq->skb[tx] = NULL;
1680
1681                 BUG_ON(skb == NULL);
1682                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1683
1684                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1685
1686                 wh = (struct ieee80211_hdr *) skb->data;
1687
1688                 /* Mark descriptor as unused */
1689                 tx_desc->pkt_phys_addr = 0;
1690                 tx_desc->pkt_len = 0;
1691
1692                 info = IEEE80211_SKB_CB(skb);
1693                 if (ieee80211_is_data(wh->frame_control)) {
1694                         rcu_read_lock();
1695                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1696                                                            wh->addr2);
1697                         if (sta) {
1698                                 sta_info = MWL8K_STA(sta);
1699                                 BUG_ON(sta_info == NULL);
1700                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1701                                 /* If rate is < 6.5 Mpbs for an ht station
1702                                  * do not form an ampdu. If the station is a
1703                                  * legacy station (format = 0), do not form an
1704                                  * ampdu
1705                                  */
1706                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1707                                     RI_FORMAT(rate_info) == 0) {
1708                                         sta_info->is_ampdu_allowed = false;
1709                                 } else {
1710                                         sta_info->is_ampdu_allowed = true;
1711                                 }
1712                         }
1713                         rcu_read_unlock();
1714                 }
1715
1716                 ieee80211_tx_info_clear_status(info);
1717
1718                 /* Rate control is happening in the firmware.
1719                  * Ensure no tx rate is being reported.
1720                  */
1721                 info->status.rates[0].idx = -1;
1722                 info->status.rates[0].count = 1;
1723
1724                 if (MWL8K_TXD_SUCCESS(status))
1725                         info->flags |= IEEE80211_TX_STAT_ACK;
1726
1727                 ieee80211_tx_status_irqsafe(hw, skb);
1728
1729                 processed++;
1730         }
1731
1732         return processed;
1733 }
1734
1735 /* must be called only when the card's transmit is completely halted */
1736 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1737 {
1738         struct mwl8k_priv *priv = hw->priv;
1739         struct mwl8k_tx_queue *txq = priv->txq + index;
1740
1741         if (txq->txd == NULL)
1742                 return;
1743
1744         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1745
1746         kfree(txq->skb);
1747         txq->skb = NULL;
1748
1749         pci_free_consistent(priv->pdev,
1750                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1751                             txq->txd, txq->txd_dma);
1752         txq->txd = NULL;
1753 }
1754
1755 /* caller must hold priv->stream_lock when calling the stream functions */
1756 static struct mwl8k_ampdu_stream *
1757 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1758 {
1759         struct mwl8k_ampdu_stream *stream;
1760         struct mwl8k_priv *priv = hw->priv;
1761         int i;
1762
1763         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1764                 stream = &priv->ampdu[i];
1765                 if (stream->state == AMPDU_NO_STREAM) {
1766                         stream->sta = sta;
1767                         stream->state = AMPDU_STREAM_NEW;
1768                         stream->tid = tid;
1769                         stream->idx = i;
1770                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1771                                     sta->addr, tid);
1772                         return stream;
1773                 }
1774         }
1775         return NULL;
1776 }
1777
1778 static int
1779 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1780 {
1781         int ret;
1782
1783         /* if the stream has already been started, don't start it again */
1784         if (stream->state != AMPDU_STREAM_NEW)
1785                 return 0;
1786         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1787         if (ret)
1788                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1789                             "%d\n", stream->sta->addr, stream->tid, ret);
1790         else
1791                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1792                             stream->sta->addr, stream->tid);
1793         return ret;
1794 }
1795
1796 static void
1797 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1798 {
1799         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1800                     stream->tid);
1801         memset(stream, 0, sizeof(*stream));
1802 }
1803
1804 static struct mwl8k_ampdu_stream *
1805 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1806 {
1807         struct mwl8k_priv *priv = hw->priv;
1808         int i;
1809
1810         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1811                 struct mwl8k_ampdu_stream *stream;
1812                 stream = &priv->ampdu[i];
1813                 if (stream->state == AMPDU_NO_STREAM)
1814                         continue;
1815                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1816                     stream->tid == tid)
1817                         return stream;
1818         }
1819         return NULL;
1820 }
1821
1822 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1823 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1824 {
1825         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1826         struct tx_traffic_info *tx_stats;
1827
1828         BUG_ON(tid >= MWL8K_MAX_TID);
1829         tx_stats = &sta_info->tx_stats[tid];
1830
1831         return sta_info->is_ampdu_allowed &&
1832                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1833 }
1834
1835 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1836 {
1837         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1838         struct tx_traffic_info *tx_stats;
1839
1840         BUG_ON(tid >= MWL8K_MAX_TID);
1841         tx_stats = &sta_info->tx_stats[tid];
1842
1843         if (tx_stats->start_time == 0)
1844                 tx_stats->start_time = jiffies;
1845
1846         /* reset the packet count after each second elapses.  If the number of
1847          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1848          * an ampdu stream to be started.
1849          */
1850         if (jiffies - tx_stats->start_time > HZ) {
1851                 tx_stats->pkts = 0;
1852                 tx_stats->start_time = 0;
1853         } else
1854                 tx_stats->pkts++;
1855 }
1856
1857 /* The hardware ampdu queues start from 5.
1858  * txpriorities for ampdu queues are
1859  * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1860  * and queue 3 is lowest (queue 4 is reserved)
1861  */
1862 #define BA_QUEUE                5
1863
1864 static void
1865 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1866                int index,
1867                struct ieee80211_sta *sta,
1868                struct sk_buff *skb)
1869 {
1870         struct mwl8k_priv *priv = hw->priv;
1871         struct ieee80211_tx_info *tx_info;
1872         struct mwl8k_vif *mwl8k_vif;
1873         struct ieee80211_hdr *wh;
1874         struct mwl8k_tx_queue *txq;
1875         struct mwl8k_tx_desc *tx;
1876         dma_addr_t dma;
1877         u32 txstatus;
1878         u8 txdatarate;
1879         u16 qos;
1880         int txpriority;
1881         u8 tid = 0;
1882         struct mwl8k_ampdu_stream *stream = NULL;
1883         bool start_ba_session = false;
1884         bool mgmtframe = false;
1885         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1886         bool eapol_frame = false;
1887
1888         wh = (struct ieee80211_hdr *)skb->data;
1889         if (ieee80211_is_data_qos(wh->frame_control))
1890                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1891         else
1892                 qos = 0;
1893
1894         if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1895                 eapol_frame = true;
1896
1897         if (ieee80211_is_mgmt(wh->frame_control))
1898                 mgmtframe = true;
1899
1900         if (priv->ap_fw)
1901                 mwl8k_encapsulate_tx_frame(priv, skb);
1902         else
1903                 mwl8k_add_dma_header(priv, skb, 0, 0);
1904
1905         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1906
1907         tx_info = IEEE80211_SKB_CB(skb);
1908         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1909
1910         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1911                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1912                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1913                 mwl8k_vif->seqno += 0x10;
1914         }
1915
1916         /* Setup firmware control bit fields for each frame type.  */
1917         txstatus = 0;
1918         txdatarate = 0;
1919         if (ieee80211_is_mgmt(wh->frame_control) ||
1920             ieee80211_is_ctl(wh->frame_control)) {
1921                 txdatarate = 0;
1922                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1923         } else if (ieee80211_is_data(wh->frame_control)) {
1924                 txdatarate = 1;
1925                 if (is_multicast_ether_addr(wh->addr1))
1926                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1927
1928                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1929                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1930                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1931                 else
1932                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1933         }
1934
1935         /* Queue ADDBA request in the respective data queue.  While setting up
1936          * the ampdu stream, mac80211 queues further packets for that
1937          * particular ra/tid pair.  However, packets piled up in the hardware
1938          * for that ra/tid pair will still go out. ADDBA request and the
1939          * related data packets going out from different queues asynchronously
1940          * will cause a shift in the receiver window which might result in
1941          * ampdu packets getting dropped at the receiver after the stream has
1942          * been setup.
1943          */
1944         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1945             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1946             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1947             priv->ap_fw)) {
1948                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1949                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1950                 index = mwl8k_tid_queue_mapping(tid);
1951         }
1952
1953         txpriority = index;
1954
1955         if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1956             ieee80211_is_data_qos(wh->frame_control)) {
1957                 tid = qos & 0xf;
1958                 mwl8k_tx_count_packet(sta, tid);
1959                 spin_lock(&priv->stream_lock);
1960                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1961                 if (stream != NULL) {
1962                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1963                                 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1964                                 txpriority = (BA_QUEUE + stream->idx) %
1965                                              TOTAL_HW_TX_QUEUES;
1966                                 if (stream->idx <= 1)
1967                                         index = stream->idx +
1968                                                 MWL8K_TX_WMM_QUEUES;
1969
1970                         } else if (stream->state == AMPDU_STREAM_NEW) {
1971                                 /* We get here if the driver sends us packets
1972                                  * after we've initiated a stream, but before
1973                                  * our ampdu_action routine has been called
1974                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1975                                  * for the ADDBA request.  So this packet can
1976                                  * go out with no risk of sequence number
1977                                  * mismatch.  No special handling is required.
1978                                  */
1979                         } else {
1980                                 /* Drop packets that would go out after the
1981                                  * ADDBA request was sent but before the ADDBA
1982                                  * response is received.  If we don't do this,
1983                                  * the recipient would probably receive it
1984                                  * after the ADDBA request with SSN 0.  This
1985                                  * will cause the recipient's BA receive window
1986                                  * to shift, which would cause the subsequent
1987                                  * packets in the BA stream to be discarded.
1988                                  * mac80211 queues our packets for us in this
1989                                  * case, so this is really just a safety check.
1990                                  */
1991                                 wiphy_warn(hw->wiphy,
1992                                            "Cannot send packet while ADDBA "
1993                                            "dialog is underway.\n");
1994                                 spin_unlock(&priv->stream_lock);
1995                                 dev_kfree_skb(skb);
1996                                 return;
1997                         }
1998                 } else {
1999                         /* Defer calling mwl8k_start_stream so that the current
2000                          * skb can go out before the ADDBA request.  This
2001                          * prevents sequence number mismatch at the recepient
2002                          * as described above.
2003                          */
2004                         if (mwl8k_ampdu_allowed(sta, tid)) {
2005                                 stream = mwl8k_add_stream(hw, sta, tid);
2006                                 if (stream != NULL)
2007                                         start_ba_session = true;
2008                         }
2009                 }
2010                 spin_unlock(&priv->stream_lock);
2011         } else {
2012                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2013                 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2014         }
2015
2016         dma = pci_map_single(priv->pdev, skb->data,
2017                                 skb->len, PCI_DMA_TODEVICE);
2018
2019         if (pci_dma_mapping_error(priv->pdev, dma)) {
2020                 wiphy_debug(hw->wiphy,
2021                             "failed to dma map skb, dropping TX frame.\n");
2022                 if (start_ba_session) {
2023                         spin_lock(&priv->stream_lock);
2024                         mwl8k_remove_stream(hw, stream);
2025                         spin_unlock(&priv->stream_lock);
2026                 }
2027                 dev_kfree_skb(skb);
2028                 return;
2029         }
2030
2031         spin_lock_bh(&priv->tx_lock);
2032
2033         txq = priv->txq + index;
2034
2035         /* Mgmt frames that go out frequently are probe
2036          * responses. Other mgmt frames got out relatively
2037          * infrequently. Hence reserve 2 buffers so that
2038          * other mgmt frames do not get dropped due to an
2039          * already queued probe response in one of the
2040          * reserved buffers.
2041          */
2042
2043         if (txq->len >= MWL8K_TX_DESCS - 2) {
2044                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2045                         if (start_ba_session) {
2046                                 spin_lock(&priv->stream_lock);
2047                                 mwl8k_remove_stream(hw, stream);
2048                                 spin_unlock(&priv->stream_lock);
2049                         }
2050                         spin_unlock_bh(&priv->tx_lock);
2051                         pci_unmap_single(priv->pdev, dma, skb->len,
2052                                          PCI_DMA_TODEVICE);
2053                         dev_kfree_skb(skb);
2054                         return;
2055                 }
2056         }
2057
2058         BUG_ON(txq->skb[txq->tail] != NULL);
2059         txq->skb[txq->tail] = skb;
2060
2061         tx = txq->txd + txq->tail;
2062         tx->data_rate = txdatarate;
2063         tx->tx_priority = txpriority;
2064         tx->qos_control = cpu_to_le16(qos);
2065         tx->pkt_phys_addr = cpu_to_le32(dma);
2066         tx->pkt_len = cpu_to_le16(skb->len);
2067         tx->rate_info = 0;
2068         if (!priv->ap_fw && sta != NULL)
2069                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2070         else
2071                 tx->peer_id = 0;
2072
2073         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2074                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2075                                                 MWL8K_HW_TIMER_REGISTER));
2076         else
2077                 tx->timestamp = 0;
2078
2079         wmb();
2080         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2081
2082         txq->len++;
2083         priv->pending_tx_pkts++;
2084
2085         txq->tail++;
2086         if (txq->tail == MWL8K_TX_DESCS)
2087                 txq->tail = 0;
2088
2089         mwl8k_tx_start(priv);
2090
2091         spin_unlock_bh(&priv->tx_lock);
2092
2093         /* Initiate the ampdu session here */
2094         if (start_ba_session) {
2095                 spin_lock(&priv->stream_lock);
2096                 if (mwl8k_start_stream(hw, stream))
2097                         mwl8k_remove_stream(hw, stream);
2098                 spin_unlock(&priv->stream_lock);
2099         }
2100 }
2101
2102
2103 /*
2104  * Firmware access.
2105  *
2106  * We have the following requirements for issuing firmware commands:
2107  * - Some commands require that the packet transmit path is idle when
2108  *   the command is issued.  (For simplicity, we'll just quiesce the
2109  *   transmit path for every command.)
2110  * - There are certain sequences of commands that need to be issued to
2111  *   the hardware sequentially, with no other intervening commands.
2112  *
2113  * This leads to an implementation of a "firmware lock" as a mutex that
2114  * can be taken recursively, and which is taken by both the low-level
2115  * command submission function (mwl8k_post_cmd) as well as any users of
2116  * that function that require issuing of an atomic sequence of commands,
2117  * and quiesces the transmit path whenever it's taken.
2118  */
2119 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2120 {
2121         struct mwl8k_priv *priv = hw->priv;
2122
2123         if (priv->fw_mutex_owner != current) {
2124                 int rc;
2125
2126                 mutex_lock(&priv->fw_mutex);
2127                 ieee80211_stop_queues(hw);
2128
2129                 rc = mwl8k_tx_wait_empty(hw);
2130                 if (rc) {
2131                         if (!priv->hw_restart_in_progress)
2132                                 ieee80211_wake_queues(hw);
2133
2134                         mutex_unlock(&priv->fw_mutex);
2135
2136                         return rc;
2137                 }
2138
2139                 priv->fw_mutex_owner = current;
2140         }
2141
2142         priv->fw_mutex_depth++;
2143
2144         return 0;
2145 }
2146
2147 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2148 {
2149         struct mwl8k_priv *priv = hw->priv;
2150
2151         if (!--priv->fw_mutex_depth) {
2152                 if (!priv->hw_restart_in_progress)
2153                         ieee80211_wake_queues(hw);
2154
2155                 priv->fw_mutex_owner = NULL;
2156                 mutex_unlock(&priv->fw_mutex);
2157         }
2158 }
2159
2160 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2161                                u32 bitmap);
2162
2163 /*
2164  * Command processing.
2165  */
2166
2167 /* Timeout firmware commands after 10s */
2168 #define MWL8K_CMD_TIMEOUT_MS    10000
2169
2170 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2171 {
2172         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2173         struct mwl8k_priv *priv = hw->priv;
2174         void __iomem *regs = priv->regs;
2175         dma_addr_t dma_addr;
2176         unsigned int dma_size;
2177         int rc;
2178         unsigned long timeout = 0;
2179         u8 buf[32];
2180         u32 bitmap = 0;
2181
2182         wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2183                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2184
2185         /* Before posting firmware commands that could change the hardware
2186          * characteristics, make sure that all BSSes are stopped temporary.
2187          * Enable these stopped BSSes after completion of the commands
2188          */
2189
2190         rc = mwl8k_fw_lock(hw);
2191         if (rc)
2192                 return rc;
2193
2194         if (priv->ap_fw && priv->running_bsses) {
2195                 switch (le16_to_cpu(cmd->code)) {
2196                 case MWL8K_CMD_SET_RF_CHANNEL:
2197                 case MWL8K_CMD_RADIO_CONTROL:
2198                 case MWL8K_CMD_RF_TX_POWER:
2199                 case MWL8K_CMD_TX_POWER:
2200                 case MWL8K_CMD_RF_ANTENNA:
2201                 case MWL8K_CMD_RTS_THRESHOLD:
2202                 case MWL8K_CMD_MIMO_CONFIG:
2203                         bitmap = priv->running_bsses;
2204                         mwl8k_enable_bsses(hw, false, bitmap);
2205                         break;
2206                 }
2207         }
2208
2209         cmd->result = (__force __le16) 0xffff;
2210         dma_size = le16_to_cpu(cmd->length);
2211         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2212                                   PCI_DMA_BIDIRECTIONAL);
2213         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2214                 return -ENOMEM;
2215
2216         priv->hostcmd_wait = &cmd_wait;
2217         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2218         iowrite32(MWL8K_H2A_INT_DOORBELL,
2219                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2220         iowrite32(MWL8K_H2A_INT_DUMMY,
2221                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2222
2223         timeout = wait_for_completion_timeout(&cmd_wait,
2224                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2225
2226         priv->hostcmd_wait = NULL;
2227
2228
2229         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2230                                         PCI_DMA_BIDIRECTIONAL);
2231
2232         if (!timeout) {
2233                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2234                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2235                           MWL8K_CMD_TIMEOUT_MS);
2236                 rc = -ETIMEDOUT;
2237         } else {
2238                 int ms;
2239
2240                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2241
2242                 rc = cmd->result ? -EINVAL : 0;
2243                 if (rc)
2244                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2245                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2246                                   le16_to_cpu(cmd->result));
2247                 else if (ms > 2000)
2248                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2249                                      mwl8k_cmd_name(cmd->code,
2250                                                     buf, sizeof(buf)),
2251                                      ms);
2252         }
2253
2254         if (bitmap)
2255                 mwl8k_enable_bsses(hw, true, bitmap);
2256
2257         mwl8k_fw_unlock(hw);
2258
2259         return rc;
2260 }
2261
2262 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2263                                  struct ieee80211_vif *vif,
2264                                  struct mwl8k_cmd_pkt *cmd)
2265 {
2266         if (vif != NULL)
2267                 cmd->macid = MWL8K_VIF(vif)->macid;
2268         return mwl8k_post_cmd(hw, cmd);
2269 }
2270
2271 /*
2272  * Setup code shared between STA and AP firmware images.
2273  */
2274 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2275 {
2276         struct mwl8k_priv *priv = hw->priv;
2277
2278         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2279         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2280
2281         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2282         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2283
2284         priv->band_24.band = IEEE80211_BAND_2GHZ;
2285         priv->band_24.channels = priv->channels_24;
2286         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2287         priv->band_24.bitrates = priv->rates_24;
2288         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2289
2290         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2291 }
2292
2293 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2294 {
2295         struct mwl8k_priv *priv = hw->priv;
2296
2297         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2298         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2299
2300         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2301         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2302
2303         priv->band_50.band = IEEE80211_BAND_5GHZ;
2304         priv->band_50.channels = priv->channels_50;
2305         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2306         priv->band_50.bitrates = priv->rates_50;
2307         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2308
2309         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2310 }
2311
2312 /*
2313  * CMD_GET_HW_SPEC (STA version).
2314  */
2315 struct mwl8k_cmd_get_hw_spec_sta {
2316         struct mwl8k_cmd_pkt header;
2317         __u8 hw_rev;
2318         __u8 host_interface;
2319         __le16 num_mcaddrs;
2320         __u8 perm_addr[ETH_ALEN];
2321         __le16 region_code;
2322         __le32 fw_rev;
2323         __le32 ps_cookie;
2324         __le32 caps;
2325         __u8 mcs_bitmap[16];
2326         __le32 rx_queue_ptr;
2327         __le32 num_tx_queues;
2328         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2329         __le32 caps2;
2330         __le32 num_tx_desc_per_queue;
2331         __le32 total_rxd;
2332 } __packed;
2333
2334 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2335 #define MWL8K_CAP_GREENFIELD            0x08000000
2336 #define MWL8K_CAP_AMPDU                 0x04000000
2337 #define MWL8K_CAP_RX_STBC               0x01000000
2338 #define MWL8K_CAP_TX_STBC               0x00800000
2339 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2340 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2341 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2342 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2343 #define MWL8K_CAP_DELAY_BA              0x00003000
2344 #define MWL8K_CAP_MIMO                  0x00000200
2345 #define MWL8K_CAP_40MHZ                 0x00000100
2346 #define MWL8K_CAP_BAND_MASK             0x00000007
2347 #define MWL8K_CAP_5GHZ                  0x00000004
2348 #define MWL8K_CAP_2GHZ4                 0x00000001
2349
2350 static void
2351 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2352                   struct ieee80211_supported_band *band, u32 cap)
2353 {
2354         int rx_streams;
2355         int tx_streams;
2356
2357         band->ht_cap.ht_supported = 1;
2358
2359         if (cap & MWL8K_CAP_MAX_AMSDU)
2360                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2361         if (cap & MWL8K_CAP_GREENFIELD)
2362                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2363         if (cap & MWL8K_CAP_AMPDU) {
2364                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2365                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2366                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2367         }
2368         if (cap & MWL8K_CAP_RX_STBC)
2369                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2370         if (cap & MWL8K_CAP_TX_STBC)
2371                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2372         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2373                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2374         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2375                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2376         if (cap & MWL8K_CAP_DELAY_BA)
2377                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2378         if (cap & MWL8K_CAP_40MHZ)
2379                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2380
2381         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2382         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2383
2384         band->ht_cap.mcs.rx_mask[0] = 0xff;
2385         if (rx_streams >= 2)
2386                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2387         if (rx_streams >= 3)
2388                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2389         band->ht_cap.mcs.rx_mask[4] = 0x01;
2390         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2391
2392         if (rx_streams != tx_streams) {
2393                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2394                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2395                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2396         }
2397 }
2398
2399 static void
2400 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2401 {
2402         struct mwl8k_priv *priv = hw->priv;
2403
2404         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2405                 mwl8k_setup_2ghz_band(hw);
2406                 if (caps & MWL8K_CAP_MIMO)
2407                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2408         }
2409
2410         if (caps & MWL8K_CAP_5GHZ) {
2411                 mwl8k_setup_5ghz_band(hw);
2412                 if (caps & MWL8K_CAP_MIMO)
2413                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2414         }
2415 }
2416
2417 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2418 {
2419         struct mwl8k_priv *priv = hw->priv;
2420         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2421         int rc;
2422         int i;
2423
2424         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2425         if (cmd == NULL)
2426                 return -ENOMEM;
2427
2428         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2429         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2430
2431         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2432         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2433         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2434         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2435         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2436                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2437         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2438         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2439
2440         rc = mwl8k_post_cmd(hw, &cmd->header);
2441
2442         if (!rc) {
2443                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2444                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2445                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2446                 priv->hw_rev = cmd->hw_rev;
2447                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2448                 priv->ap_macids_supported = 0x00000000;
2449                 priv->sta_macids_supported = 0x00000001;
2450         }
2451
2452         kfree(cmd);
2453         return rc;
2454 }
2455
2456 /*
2457  * CMD_GET_HW_SPEC (AP version).
2458  */
2459 struct mwl8k_cmd_get_hw_spec_ap {
2460         struct mwl8k_cmd_pkt header;
2461         __u8 hw_rev;
2462         __u8 host_interface;
2463         __le16 num_wcb;
2464         __le16 num_mcaddrs;
2465         __u8 perm_addr[ETH_ALEN];
2466         __le16 region_code;
2467         __le16 num_antenna;
2468         __le32 fw_rev;
2469         __le32 wcbbase0;
2470         __le32 rxwrptr;
2471         __le32 rxrdptr;
2472         __le32 ps_cookie;
2473         __le32 wcbbase1;
2474         __le32 wcbbase2;
2475         __le32 wcbbase3;
2476         __le32 fw_api_version;
2477         __le32 caps;
2478         __le32 num_of_ampdu_queues;
2479         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2480 } __packed;
2481
2482 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2483 {
2484         struct mwl8k_priv *priv = hw->priv;
2485         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2486         int rc, i;
2487         u32 api_version;
2488
2489         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2490         if (cmd == NULL)
2491                 return -ENOMEM;
2492
2493         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2494         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2495
2496         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2497         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2498
2499         rc = mwl8k_post_cmd(hw, &cmd->header);
2500
2501         if (!rc) {
2502                 int off;
2503
2504                 api_version = le32_to_cpu(cmd->fw_api_version);
2505                 if (priv->device_info->fw_api_ap != api_version) {
2506                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2507                                "  Expected %d got %d.\n", MWL8K_NAME,
2508                                priv->device_info->part_name,
2509                                priv->device_info->fw_api_ap,
2510                                api_version);
2511                         rc = -EINVAL;
2512                         goto done;
2513                 }
2514                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2515                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2516                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2517                 priv->hw_rev = cmd->hw_rev;
2518                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2519                 priv->ap_macids_supported = 0x000000ff;
2520                 priv->sta_macids_supported = 0x00000100;
2521                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2522                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2523                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2524                                    " but we only support %d.\n",
2525                                    priv->num_ampdu_queues,
2526                                    MWL8K_MAX_AMPDU_QUEUES);
2527                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2528                 }
2529                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2530                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2531
2532                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2533                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2534
2535                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2536                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2537                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2538                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2539
2540                 for (i = 0; i < priv->num_ampdu_queues; i++)
2541                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2542                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2543         }
2544
2545 done:
2546         kfree(cmd);
2547         return rc;
2548 }
2549
2550 /*
2551  * CMD_SET_HW_SPEC.
2552  */
2553 struct mwl8k_cmd_set_hw_spec {
2554         struct mwl8k_cmd_pkt header;
2555         __u8 hw_rev;
2556         __u8 host_interface;
2557         __le16 num_mcaddrs;
2558         __u8 perm_addr[ETH_ALEN];
2559         __le16 region_code;
2560         __le32 fw_rev;
2561         __le32 ps_cookie;
2562         __le32 caps;
2563         __le32 rx_queue_ptr;
2564         __le32 num_tx_queues;
2565         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2566         __le32 flags;
2567         __le32 num_tx_desc_per_queue;
2568         __le32 total_rxd;
2569 } __packed;
2570
2571 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2572  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2573  * the packets that are queued for more than 500ms, will be dropped in the
2574  * hardware. This helps minimizing the issues caused due to head-of-line
2575  * blocking where a slow client can hog the bandwidth and affect traffic to a
2576  * faster client.
2577  */
2578 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2579 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2580 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2581 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2582 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2583
2584 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2585 {
2586         struct mwl8k_priv *priv = hw->priv;
2587         struct mwl8k_cmd_set_hw_spec *cmd;
2588         int rc;
2589         int i;
2590
2591         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2592         if (cmd == NULL)
2593                 return -ENOMEM;
2594
2595         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2596         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2597
2598         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2599         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2600         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2601
2602         /*
2603          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2604          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2605          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2606          * priority is interpreted the right way in firmware.
2607          */
2608         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2609                 int j = mwl8k_tx_queues(priv) - 1 - i;
2610                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2611         }
2612
2613         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2614                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2615                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2616                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2617                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2618         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2619         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2620
2621         rc = mwl8k_post_cmd(hw, &cmd->header);
2622         kfree(cmd);
2623
2624         return rc;
2625 }
2626
2627 /*
2628  * CMD_MAC_MULTICAST_ADR.
2629  */
2630 struct mwl8k_cmd_mac_multicast_adr {
2631         struct mwl8k_cmd_pkt header;
2632         __le16 action;
2633         __le16 numaddr;
2634         __u8 addr[0][ETH_ALEN];
2635 };
2636
2637 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2638 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2639 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2640 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2641
2642 static struct mwl8k_cmd_pkt *
2643 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2644                               struct netdev_hw_addr_list *mc_list)
2645 {
2646         struct mwl8k_priv *priv = hw->priv;
2647         struct mwl8k_cmd_mac_multicast_adr *cmd;
2648         int size;
2649         int mc_count = 0;
2650
2651         if (mc_list)
2652                 mc_count = netdev_hw_addr_list_count(mc_list);
2653
2654         if (allmulti || mc_count > priv->num_mcaddrs) {
2655                 allmulti = 1;
2656                 mc_count = 0;
2657         }
2658
2659         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2660
2661         cmd = kzalloc(size, GFP_ATOMIC);
2662         if (cmd == NULL)
2663                 return NULL;
2664
2665         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2666         cmd->header.length = cpu_to_le16(size);
2667         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2668                                   MWL8K_ENABLE_RX_BROADCAST);
2669
2670         if (allmulti) {
2671                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2672         } else if (mc_count) {
2673                 struct netdev_hw_addr *ha;
2674                 int i = 0;
2675
2676                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2677                 cmd->numaddr = cpu_to_le16(mc_count);
2678                 netdev_hw_addr_list_for_each(ha, mc_list) {
2679                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2680                 }
2681         }
2682
2683         return &cmd->header;
2684 }
2685
2686 /*
2687  * CMD_GET_STAT.
2688  */
2689 struct mwl8k_cmd_get_stat {
2690         struct mwl8k_cmd_pkt header;
2691         __le32 stats[64];
2692 } __packed;
2693
2694 #define MWL8K_STAT_ACK_FAILURE  9
2695 #define MWL8K_STAT_RTS_FAILURE  12
2696 #define MWL8K_STAT_FCS_ERROR    24
2697 #define MWL8K_STAT_RTS_SUCCESS  11
2698
2699 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2700                               struct ieee80211_low_level_stats *stats)
2701 {
2702         struct mwl8k_cmd_get_stat *cmd;
2703         int rc;
2704
2705         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2706         if (cmd == NULL)
2707                 return -ENOMEM;
2708
2709         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2710         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2711
2712         rc = mwl8k_post_cmd(hw, &cmd->header);
2713         if (!rc) {
2714                 stats->dot11ACKFailureCount =
2715                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2716                 stats->dot11RTSFailureCount =
2717                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2718                 stats->dot11FCSErrorCount =
2719                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2720                 stats->dot11RTSSuccessCount =
2721                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2722         }
2723         kfree(cmd);
2724
2725         return rc;
2726 }
2727
2728 /*
2729  * CMD_RADIO_CONTROL.
2730  */
2731 struct mwl8k_cmd_radio_control {
2732         struct mwl8k_cmd_pkt header;
2733         __le16 action;
2734         __le16 control;
2735         __le16 radio_on;
2736 } __packed;
2737
2738 static int
2739 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2740 {
2741         struct mwl8k_priv *priv = hw->priv;
2742         struct mwl8k_cmd_radio_control *cmd;
2743         int rc;
2744
2745         if (enable == priv->radio_on && !force)
2746                 return 0;
2747
2748         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2749         if (cmd == NULL)
2750                 return -ENOMEM;
2751
2752         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2753         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2754         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2755         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2756         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2757
2758         rc = mwl8k_post_cmd(hw, &cmd->header);
2759         kfree(cmd);
2760
2761         if (!rc)
2762                 priv->radio_on = enable;
2763
2764         return rc;
2765 }
2766
2767 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2768 {
2769         return mwl8k_cmd_radio_control(hw, 0, 0);
2770 }
2771
2772 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2773 {
2774         return mwl8k_cmd_radio_control(hw, 1, 0);
2775 }
2776
2777 static int
2778 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2779 {
2780         struct mwl8k_priv *priv = hw->priv;
2781
2782         priv->radio_short_preamble = short_preamble;
2783
2784         return mwl8k_cmd_radio_control(hw, 1, 1);
2785 }
2786
2787 /*
2788  * CMD_RF_TX_POWER.
2789  */
2790 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2791
2792 struct mwl8k_cmd_rf_tx_power {
2793         struct mwl8k_cmd_pkt header;
2794         __le16 action;
2795         __le16 support_level;
2796         __le16 current_level;
2797         __le16 reserved;
2798         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2799 } __packed;
2800
2801 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2802 {
2803         struct mwl8k_cmd_rf_tx_power *cmd;
2804         int rc;
2805
2806         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2807         if (cmd == NULL)
2808                 return -ENOMEM;
2809
2810         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2811         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2812         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2813         cmd->support_level = cpu_to_le16(dBm);
2814
2815         rc = mwl8k_post_cmd(hw, &cmd->header);
2816         kfree(cmd);
2817
2818         return rc;
2819 }
2820
2821 /*
2822  * CMD_TX_POWER.
2823  */
2824 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2825
2826 struct mwl8k_cmd_tx_power {
2827         struct mwl8k_cmd_pkt header;
2828         __le16 action;
2829         __le16 band;
2830         __le16 channel;
2831         __le16 bw;
2832         __le16 sub_ch;
2833         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2834 } __packed;
2835
2836 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2837                                      struct ieee80211_conf *conf,
2838                                      unsigned short pwr)
2839 {
2840         struct ieee80211_channel *channel = conf->channel;
2841         struct mwl8k_cmd_tx_power *cmd;
2842         int rc;
2843         int i;
2844
2845         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2846         if (cmd == NULL)
2847                 return -ENOMEM;
2848
2849         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2850         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2851         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2852
2853         if (channel->band == IEEE80211_BAND_2GHZ)
2854                 cmd->band = cpu_to_le16(0x1);
2855         else if (channel->band == IEEE80211_BAND_5GHZ)
2856                 cmd->band = cpu_to_le16(0x4);
2857
2858         cmd->channel = cpu_to_le16(channel->hw_value);
2859
2860         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2861             conf->channel_type == NL80211_CHAN_HT20) {
2862                 cmd->bw = cpu_to_le16(0x2);
2863         } else {
2864                 cmd->bw = cpu_to_le16(0x4);
2865                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2866                         cmd->sub_ch = cpu_to_le16(0x3);
2867                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2868                         cmd->sub_ch = cpu_to_le16(0x1);
2869         }
2870
2871         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2872                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2873
2874         rc = mwl8k_post_cmd(hw, &cmd->header);
2875         kfree(cmd);
2876
2877         return rc;
2878 }
2879
2880 /*
2881  * CMD_RF_ANTENNA.
2882  */
2883 struct mwl8k_cmd_rf_antenna {
2884         struct mwl8k_cmd_pkt header;
2885         __le16 antenna;
2886         __le16 mode;
2887 } __packed;
2888
2889 #define MWL8K_RF_ANTENNA_RX             1
2890 #define MWL8K_RF_ANTENNA_TX             2
2891
2892 static int
2893 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2894 {
2895         struct mwl8k_cmd_rf_antenna *cmd;
2896         int rc;
2897
2898         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2899         if (cmd == NULL)
2900                 return -ENOMEM;
2901
2902         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2903         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2904         cmd->antenna = cpu_to_le16(antenna);
2905         cmd->mode = cpu_to_le16(mask);
2906
2907         rc = mwl8k_post_cmd(hw, &cmd->header);
2908         kfree(cmd);
2909
2910         return rc;
2911 }
2912
2913 /*
2914  * CMD_SET_BEACON.
2915  */
2916 struct mwl8k_cmd_set_beacon {
2917         struct mwl8k_cmd_pkt header;
2918         __le16 beacon_len;
2919         __u8 beacon[0];
2920 };
2921
2922 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2923                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2924 {
2925         struct mwl8k_cmd_set_beacon *cmd;
2926         int rc;
2927
2928         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2929         if (cmd == NULL)
2930                 return -ENOMEM;
2931
2932         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2933         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2934         cmd->beacon_len = cpu_to_le16(len);
2935         memcpy(cmd->beacon, beacon, len);
2936
2937         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2938         kfree(cmd);
2939
2940         return rc;
2941 }
2942
2943 /*
2944  * CMD_SET_PRE_SCAN.
2945  */
2946 struct mwl8k_cmd_set_pre_scan {
2947         struct mwl8k_cmd_pkt header;
2948 } __packed;
2949
2950 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2951 {
2952         struct mwl8k_cmd_set_pre_scan *cmd;
2953         int rc;
2954
2955         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2956         if (cmd == NULL)
2957                 return -ENOMEM;
2958
2959         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2960         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2961
2962         rc = mwl8k_post_cmd(hw, &cmd->header);
2963         kfree(cmd);
2964
2965         return rc;
2966 }
2967
2968 /*
2969  * CMD_SET_POST_SCAN.
2970  */
2971 struct mwl8k_cmd_set_post_scan {
2972         struct mwl8k_cmd_pkt header;
2973         __le32 isibss;
2974         __u8 bssid[ETH_ALEN];
2975 } __packed;
2976
2977 static int
2978 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2979 {
2980         struct mwl8k_cmd_set_post_scan *cmd;
2981         int rc;
2982
2983         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2984         if (cmd == NULL)
2985                 return -ENOMEM;
2986
2987         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2988         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2989         cmd->isibss = 0;
2990         memcpy(cmd->bssid, mac, ETH_ALEN);
2991
2992         rc = mwl8k_post_cmd(hw, &cmd->header);
2993         kfree(cmd);
2994
2995         return rc;
2996 }
2997
2998 /*
2999  * CMD_SET_RF_CHANNEL.
3000  */
3001 struct mwl8k_cmd_set_rf_channel {
3002         struct mwl8k_cmd_pkt header;
3003         __le16 action;
3004         __u8 current_channel;
3005         __le32 channel_flags;
3006 } __packed;
3007
3008 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3009                                     struct ieee80211_conf *conf)
3010 {
3011         struct ieee80211_channel *channel = conf->channel;
3012         struct mwl8k_cmd_set_rf_channel *cmd;
3013         int rc;
3014
3015         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3016         if (cmd == NULL)
3017                 return -ENOMEM;
3018
3019         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3020         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3021         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3022         cmd->current_channel = channel->hw_value;
3023
3024         if (channel->band == IEEE80211_BAND_2GHZ)
3025                 cmd->channel_flags |= cpu_to_le32(0x00000001);
3026         else if (channel->band == IEEE80211_BAND_5GHZ)
3027                 cmd->channel_flags |= cpu_to_le32(0x00000004);
3028
3029         if (conf->channel_type == NL80211_CHAN_NO_HT ||
3030             conf->channel_type == NL80211_CHAN_HT20)
3031                 cmd->channel_flags |= cpu_to_le32(0x00000080);
3032         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
3033                 cmd->channel_flags |= cpu_to_le32(0x000001900);
3034         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
3035                 cmd->channel_flags |= cpu_to_le32(0x000000900);
3036
3037         rc = mwl8k_post_cmd(hw, &cmd->header);
3038         kfree(cmd);
3039
3040         return rc;
3041 }
3042
3043 /*
3044  * CMD_SET_AID.
3045  */
3046 #define MWL8K_FRAME_PROT_DISABLED                       0x00
3047 #define MWL8K_FRAME_PROT_11G                            0x07
3048 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
3049 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
3050
3051 struct mwl8k_cmd_update_set_aid {
3052         struct  mwl8k_cmd_pkt header;
3053         __le16  aid;
3054
3055          /* AP's MAC address (BSSID) */
3056         __u8    bssid[ETH_ALEN];
3057         __le16  protection_mode;
3058         __u8    supp_rates[14];
3059 } __packed;
3060
3061 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3062 {
3063         int i;
3064         int j;
3065
3066         /*
3067          * Clear nonstandard rates 4 and 13.
3068          */
3069         mask &= 0x1fef;
3070
3071         for (i = 0, j = 0; i < 14; i++) {
3072                 if (mask & (1 << i))
3073                         rates[j++] = mwl8k_rates_24[i].hw_value;
3074         }
3075 }
3076
3077 static int
3078 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3079                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3080 {
3081         struct mwl8k_cmd_update_set_aid *cmd;
3082         u16 prot_mode;
3083         int rc;
3084
3085         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3086         if (cmd == NULL)
3087                 return -ENOMEM;
3088
3089         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3090         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3091         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3092         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3093
3094         if (vif->bss_conf.use_cts_prot) {
3095                 prot_mode = MWL8K_FRAME_PROT_11G;
3096         } else {
3097                 switch (vif->bss_conf.ht_operation_mode &
3098                         IEEE80211_HT_OP_MODE_PROTECTION) {
3099                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3100                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3101                         break;
3102                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3103                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3104                         break;
3105                 default:
3106                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3107                         break;
3108                 }
3109         }
3110         cmd->protection_mode = cpu_to_le16(prot_mode);
3111
3112         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3113
3114         rc = mwl8k_post_cmd(hw, &cmd->header);
3115         kfree(cmd);
3116
3117         return rc;
3118 }
3119
3120 /*
3121  * CMD_SET_RATE.
3122  */
3123 struct mwl8k_cmd_set_rate {
3124         struct  mwl8k_cmd_pkt header;
3125         __u8    legacy_rates[14];
3126
3127         /* Bitmap for supported MCS codes.  */
3128         __u8    mcs_set[16];
3129         __u8    reserved[16];
3130 } __packed;
3131
3132 static int
3133 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3134                    u32 legacy_rate_mask, u8 *mcs_rates)
3135 {
3136         struct mwl8k_cmd_set_rate *cmd;
3137         int rc;
3138
3139         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3140         if (cmd == NULL)
3141                 return -ENOMEM;
3142
3143         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3144         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3145         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3146         memcpy(cmd->mcs_set, mcs_rates, 16);
3147
3148         rc = mwl8k_post_cmd(hw, &cmd->header);
3149         kfree(cmd);
3150
3151         return rc;
3152 }
3153
3154 /*
3155  * CMD_FINALIZE_JOIN.
3156  */
3157 #define MWL8K_FJ_BEACON_MAXLEN  128
3158
3159 struct mwl8k_cmd_finalize_join {
3160         struct mwl8k_cmd_pkt header;
3161         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3162         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3163 } __packed;
3164
3165 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3166                                    int framelen, int dtim)
3167 {
3168         struct mwl8k_cmd_finalize_join *cmd;
3169         struct ieee80211_mgmt *payload = frame;
3170         int payload_len;
3171         int rc;
3172
3173         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3174         if (cmd == NULL)
3175                 return -ENOMEM;
3176
3177         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3178         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3179         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3180
3181         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3182         if (payload_len < 0)
3183                 payload_len = 0;
3184         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3185                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3186
3187         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3188
3189         rc = mwl8k_post_cmd(hw, &cmd->header);
3190         kfree(cmd);
3191
3192         return rc;
3193 }
3194
3195 /*
3196  * CMD_SET_RTS_THRESHOLD.
3197  */
3198 struct mwl8k_cmd_set_rts_threshold {
3199         struct mwl8k_cmd_pkt header;
3200         __le16 action;
3201         __le16 threshold;
3202 } __packed;
3203
3204 static int
3205 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3206 {
3207         struct mwl8k_cmd_set_rts_threshold *cmd;
3208         int rc;
3209
3210         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3211         if (cmd == NULL)
3212                 return -ENOMEM;
3213
3214         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3215         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3216         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3217         cmd->threshold = cpu_to_le16(rts_thresh);
3218
3219         rc = mwl8k_post_cmd(hw, &cmd->header);
3220         kfree(cmd);
3221
3222         return rc;
3223 }
3224
3225 /*
3226  * CMD_SET_SLOT.
3227  */
3228 struct mwl8k_cmd_set_slot {
3229         struct mwl8k_cmd_pkt header;
3230         __le16 action;
3231         __u8 short_slot;
3232 } __packed;
3233
3234 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3235 {
3236         struct mwl8k_cmd_set_slot *cmd;
3237         int rc;
3238
3239         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3240         if (cmd == NULL)
3241                 return -ENOMEM;
3242
3243         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3244         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3245         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3246         cmd->short_slot = short_slot_time;
3247
3248         rc = mwl8k_post_cmd(hw, &cmd->header);
3249         kfree(cmd);
3250
3251         return rc;
3252 }
3253
3254 /*
3255  * CMD_SET_EDCA_PARAMS.
3256  */
3257 struct mwl8k_cmd_set_edca_params {
3258         struct mwl8k_cmd_pkt header;
3259
3260         /* See MWL8K_SET_EDCA_XXX below */
3261         __le16 action;
3262
3263         /* TX opportunity in units of 32 us */
3264         __le16 txop;
3265
3266         union {
3267                 struct {
3268                         /* Log exponent of max contention period: 0...15 */
3269                         __le32 log_cw_max;
3270
3271                         /* Log exponent of min contention period: 0...15 */
3272                         __le32 log_cw_min;
3273
3274                         /* Adaptive interframe spacing in units of 32us */
3275                         __u8 aifs;
3276
3277                         /* TX queue to configure */
3278                         __u8 txq;
3279                 } ap;
3280                 struct {
3281                         /* Log exponent of max contention period: 0...15 */
3282                         __u8 log_cw_max;
3283
3284                         /* Log exponent of min contention period: 0...15 */
3285                         __u8 log_cw_min;
3286
3287                         /* Adaptive interframe spacing in units of 32us */
3288                         __u8 aifs;
3289
3290                         /* TX queue to configure */
3291                         __u8 txq;
3292                 } sta;
3293         };
3294 } __packed;
3295
3296 #define MWL8K_SET_EDCA_CW       0x01
3297 #define MWL8K_SET_EDCA_TXOP     0x02
3298 #define MWL8K_SET_EDCA_AIFS     0x04
3299
3300 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3301                                  MWL8K_SET_EDCA_TXOP | \
3302                                  MWL8K_SET_EDCA_AIFS)
3303
3304 static int
3305 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3306                           __u16 cw_min, __u16 cw_max,
3307                           __u8 aifs, __u16 txop)
3308 {
3309         struct mwl8k_priv *priv = hw->priv;
3310         struct mwl8k_cmd_set_edca_params *cmd;
3311         int rc;
3312
3313         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3314         if (cmd == NULL)
3315                 return -ENOMEM;
3316
3317         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3318         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3319         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3320         cmd->txop = cpu_to_le16(txop);
3321         if (priv->ap_fw) {
3322                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3323                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3324                 cmd->ap.aifs = aifs;
3325                 cmd->ap.txq = qnum;
3326         } else {
3327                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3328                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3329                 cmd->sta.aifs = aifs;
3330                 cmd->sta.txq = qnum;
3331         }
3332
3333         rc = mwl8k_post_cmd(hw, &cmd->header);
3334         kfree(cmd);
3335
3336         return rc;
3337 }
3338
3339 /*
3340  * CMD_SET_WMM_MODE.
3341  */
3342 struct mwl8k_cmd_set_wmm_mode {
3343         struct mwl8k_cmd_pkt header;
3344         __le16 action;
3345 } __packed;
3346
3347 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3348 {
3349         struct mwl8k_priv *priv = hw->priv;
3350         struct mwl8k_cmd_set_wmm_mode *cmd;
3351         int rc;
3352
3353         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3354         if (cmd == NULL)
3355                 return -ENOMEM;
3356
3357         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3358         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3359         cmd->action = cpu_to_le16(!!enable);
3360
3361         rc = mwl8k_post_cmd(hw, &cmd->header);
3362         kfree(cmd);
3363
3364         if (!rc)
3365                 priv->wmm_enabled = enable;
3366
3367         return rc;
3368 }
3369
3370 /*
3371  * CMD_MIMO_CONFIG.
3372  */
3373 struct mwl8k_cmd_mimo_config {
3374         struct mwl8k_cmd_pkt header;
3375         __le32 action;
3376         __u8 rx_antenna_map;
3377         __u8 tx_antenna_map;
3378 } __packed;
3379
3380 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3381 {
3382         struct mwl8k_cmd_mimo_config *cmd;
3383         int rc;
3384
3385         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3386         if (cmd == NULL)
3387                 return -ENOMEM;
3388
3389         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3390         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3391         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3392         cmd->rx_antenna_map = rx;
3393         cmd->tx_antenna_map = tx;
3394
3395         rc = mwl8k_post_cmd(hw, &cmd->header);
3396         kfree(cmd);
3397
3398         return rc;
3399 }
3400
3401 /*
3402  * CMD_USE_FIXED_RATE (STA version).
3403  */
3404 struct mwl8k_cmd_use_fixed_rate_sta {
3405         struct mwl8k_cmd_pkt header;
3406         __le32 action;
3407         __le32 allow_rate_drop;
3408         __le32 num_rates;
3409         struct {
3410                 __le32 is_ht_rate;
3411                 __le32 enable_retry;
3412                 __le32 rate;
3413                 __le32 retry_count;
3414         } rate_entry[8];
3415         __le32 rate_type;
3416         __le32 reserved1;
3417         __le32 reserved2;
3418 } __packed;
3419
3420 #define MWL8K_USE_AUTO_RATE     0x0002
3421 #define MWL8K_UCAST_RATE        0
3422
3423 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3424 {
3425         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3426         int rc;
3427
3428         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3429         if (cmd == NULL)
3430                 return -ENOMEM;
3431
3432         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3433         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3434         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3435         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3436
3437         rc = mwl8k_post_cmd(hw, &cmd->header);
3438         kfree(cmd);
3439
3440         return rc;
3441 }
3442
3443 /*
3444  * CMD_USE_FIXED_RATE (AP version).
3445  */
3446 struct mwl8k_cmd_use_fixed_rate_ap {
3447         struct mwl8k_cmd_pkt header;
3448         __le32 action;
3449         __le32 allow_rate_drop;
3450         __le32 num_rates;
3451         struct mwl8k_rate_entry_ap {
3452                 __le32 is_ht_rate;
3453                 __le32 enable_retry;
3454                 __le32 rate;
3455                 __le32 retry_count;
3456         } rate_entry[4];
3457         u8 multicast_rate;
3458         u8 multicast_rate_type;
3459         u8 management_rate;
3460 } __packed;
3461
3462 static int
3463 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3464 {
3465         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3466         int rc;
3467
3468         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3469         if (cmd == NULL)
3470                 return -ENOMEM;
3471
3472         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3473         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3474         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3475         cmd->multicast_rate = mcast;
3476         cmd->management_rate = mgmt;
3477
3478         rc = mwl8k_post_cmd(hw, &cmd->header);
3479         kfree(cmd);
3480
3481         return rc;
3482 }
3483
3484 /*
3485  * CMD_ENABLE_SNIFFER.
3486  */
3487 struct mwl8k_cmd_enable_sniffer {
3488         struct mwl8k_cmd_pkt header;
3489         __le32 action;
3490 } __packed;
3491
3492 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3493 {
3494         struct mwl8k_cmd_enable_sniffer *cmd;
3495         int rc;
3496
3497         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3498         if (cmd == NULL)
3499                 return -ENOMEM;
3500
3501         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3502         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3503         cmd->action = cpu_to_le32(!!enable);
3504
3505         rc = mwl8k_post_cmd(hw, &cmd->header);
3506         kfree(cmd);
3507
3508         return rc;
3509 }
3510
3511 struct mwl8k_cmd_update_mac_addr {
3512         struct mwl8k_cmd_pkt header;
3513         union {
3514                 struct {
3515                         __le16 mac_type;
3516                         __u8 mac_addr[ETH_ALEN];
3517                 } mbss;
3518                 __u8 mac_addr[ETH_ALEN];
3519         };
3520 } __packed;
3521
3522 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3523 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3524 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3525 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3526
3527 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3528                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3529 {
3530         struct mwl8k_priv *priv = hw->priv;
3531         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3532         struct mwl8k_cmd_update_mac_addr *cmd;
3533         int mac_type;
3534         int rc;
3535
3536         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3537         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3538                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3539                         if (priv->ap_fw)
3540                                 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3541                         else
3542                                 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3543                 else
3544                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3545         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3546                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3547                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3548                 else
3549                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3550         }
3551
3552         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3553         if (cmd == NULL)
3554                 return -ENOMEM;
3555
3556         if (set)
3557                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3558         else
3559                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3560
3561         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3562         if (priv->ap_fw) {
3563                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3564                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3565         } else {
3566                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3567         }
3568
3569         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3570         kfree(cmd);
3571
3572         return rc;
3573 }
3574
3575 /*
3576  * MWL8K_CMD_SET_MAC_ADDR.
3577  */
3578 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3579                                   struct ieee80211_vif *vif, u8 *mac)
3580 {
3581         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3582 }
3583
3584 /*
3585  * MWL8K_CMD_DEL_MAC_ADDR.
3586  */
3587 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3588                                   struct ieee80211_vif *vif, u8 *mac)
3589 {
3590         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3591 }
3592
3593 /*
3594  * CMD_SET_RATEADAPT_MODE.
3595  */
3596 struct mwl8k_cmd_set_rate_adapt_mode {
3597         struct mwl8k_cmd_pkt header;
3598         __le16 action;
3599         __le16 mode;
3600 } __packed;
3601
3602 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3603 {
3604         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3605         int rc;
3606
3607         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3608         if (cmd == NULL)
3609                 return -ENOMEM;
3610
3611         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3612         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3613         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3614         cmd->mode = cpu_to_le16(mode);
3615
3616         rc = mwl8k_post_cmd(hw, &cmd->header);
3617         kfree(cmd);
3618
3619         return rc;
3620 }
3621
3622 /*
3623  * CMD_GET_WATCHDOG_BITMAP.
3624  */
3625 struct mwl8k_cmd_get_watchdog_bitmap {
3626         struct mwl8k_cmd_pkt header;
3627         u8      bitmap;
3628 } __packed;
3629
3630 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3631 {
3632         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3633         int rc;
3634
3635         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3636         if (cmd == NULL)
3637                 return -ENOMEM;
3638
3639         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3640         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3641
3642         rc = mwl8k_post_cmd(hw, &cmd->header);
3643         if (!rc)
3644                 *bitmap = cmd->bitmap;
3645
3646         kfree(cmd);
3647
3648         return rc;
3649 }
3650
3651 #define MWL8K_WMM_QUEUE_NUMBER  3
3652
3653 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3654                              u8 idx);
3655
3656 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3657 {
3658         int rc;
3659         u8 bitmap = 0, stream_index;
3660         struct mwl8k_ampdu_stream *streams;
3661         struct mwl8k_priv *priv =
3662                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3663         struct ieee80211_hw *hw = priv->hw;
3664         int i;
3665         u32 status = 0;
3666
3667         mwl8k_fw_lock(hw);
3668
3669         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3670         if (rc)
3671                 goto done;
3672
3673         spin_lock(&priv->stream_lock);
3674
3675         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3676         for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3677                 if (bitmap & (1 << i)) {
3678                         stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3679                                        TOTAL_HW_TX_QUEUES;
3680                         streams = &priv->ampdu[stream_index];
3681                         if (streams->state == AMPDU_STREAM_ACTIVE) {
3682                                 ieee80211_stop_tx_ba_session(streams->sta,
3683                                                              streams->tid);
3684                                 spin_unlock(&priv->stream_lock);
3685                                 mwl8k_destroy_ba(hw, stream_index);
3686                                 spin_lock(&priv->stream_lock);
3687                         }
3688                 }
3689         }
3690
3691         spin_unlock(&priv->stream_lock);
3692 done:
3693         atomic_dec(&priv->watchdog_event_pending);
3694         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3695         iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3696                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3697         mwl8k_fw_unlock(hw);
3698         return;
3699 }
3700
3701
3702 /*
3703  * CMD_BSS_START.
3704  */
3705 struct mwl8k_cmd_bss_start {
3706         struct mwl8k_cmd_pkt header;
3707         __le32 enable;
3708 } __packed;
3709
3710 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3711                                struct ieee80211_vif *vif, int enable)
3712 {
3713         struct mwl8k_cmd_bss_start *cmd;
3714         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3715         struct mwl8k_priv *priv = hw->priv;
3716         int rc;
3717
3718         if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3719                 return 0;
3720
3721         if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3722                 return 0;
3723
3724         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3725         if (cmd == NULL)
3726                 return -ENOMEM;
3727
3728         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3729         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3730         cmd->enable = cpu_to_le32(enable);
3731
3732         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3733         kfree(cmd);
3734
3735         if (!rc) {
3736                 if (enable)
3737                         priv->running_bsses |= (1 << mwl8k_vif->macid);
3738                 else
3739                         priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3740         }
3741         return rc;
3742 }
3743
3744 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3745 {
3746         struct mwl8k_priv *priv = hw->priv;
3747         struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3748         struct ieee80211_vif *vif;
3749
3750         list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3751                 vif = mwl8k_vif->vif;
3752
3753                 if (!(bitmap & (1 << mwl8k_vif->macid)))
3754                         continue;
3755
3756                 if (vif->type == NL80211_IFTYPE_AP)
3757                         mwl8k_cmd_bss_start(hw, vif, enable);
3758         }
3759 }
3760 /*
3761  * CMD_BASTREAM.
3762  */
3763
3764 /*
3765  * UPSTREAM is tx direction
3766  */
3767 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3768 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3769
3770 enum ba_stream_action_type {
3771         MWL8K_BA_CREATE,
3772         MWL8K_BA_UPDATE,
3773         MWL8K_BA_DESTROY,
3774         MWL8K_BA_FLUSH,
3775         MWL8K_BA_CHECK,
3776 };
3777
3778
3779 struct mwl8k_create_ba_stream {
3780         __le32  flags;
3781         __le32  idle_thrs;
3782         __le32  bar_thrs;
3783         __le32  window_size;
3784         u8      peer_mac_addr[6];
3785         u8      dialog_token;
3786         u8      tid;
3787         u8      queue_id;
3788         u8      param_info;
3789         __le32  ba_context;
3790         u8      reset_seq_no_flag;
3791         __le16  curr_seq_no;
3792         u8      sta_src_mac_addr[6];
3793 } __packed;
3794
3795 struct mwl8k_destroy_ba_stream {
3796         __le32  flags;
3797         __le32  ba_context;
3798 } __packed;
3799
3800 struct mwl8k_cmd_bastream {
3801         struct mwl8k_cmd_pkt    header;
3802         __le32  action;
3803         union {
3804                 struct mwl8k_create_ba_stream   create_params;
3805                 struct mwl8k_destroy_ba_stream  destroy_params;
3806         };
3807 } __packed;
3808
3809 static int
3810 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3811                struct ieee80211_vif *vif)
3812 {
3813         struct mwl8k_cmd_bastream *cmd;
3814         int rc;
3815
3816         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3817         if (cmd == NULL)
3818                 return -ENOMEM;
3819
3820         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3821         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3822
3823         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3824
3825         cmd->create_params.queue_id = stream->idx;
3826         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3827                ETH_ALEN);
3828         cmd->create_params.tid = stream->tid;
3829
3830         cmd->create_params.flags =
3831                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3832                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3833
3834         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3835
3836         kfree(cmd);
3837
3838         return rc;
3839 }
3840
3841 static int
3842 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3843                 u8 buf_size, struct ieee80211_vif *vif)
3844 {
3845         struct mwl8k_cmd_bastream *cmd;
3846         int rc;
3847
3848         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3849         if (cmd == NULL)
3850                 return -ENOMEM;
3851
3852
3853         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3854         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3855
3856         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3857
3858         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3859         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3860         cmd->create_params.queue_id = stream->idx;
3861
3862         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3863         cmd->create_params.tid = stream->tid;
3864         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3865         cmd->create_params.reset_seq_no_flag = 1;
3866
3867         cmd->create_params.param_info =
3868                 (stream->sta->ht_cap.ampdu_factor &
3869                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3870                 ((stream->sta->ht_cap.ampdu_density << 2) &
3871                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3872
3873         cmd->create_params.flags =
3874                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3875                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3876
3877         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3878
3879         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3880                 stream->sta->addr, stream->tid);
3881         kfree(cmd);
3882
3883         return rc;
3884 }
3885
3886 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3887                              u8 idx)
3888 {
3889         struct mwl8k_cmd_bastream *cmd;
3890
3891         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3892         if (cmd == NULL)
3893                 return;
3894
3895         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3896         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3897         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3898
3899         cmd->destroy_params.ba_context = cpu_to_le32(idx);
3900         mwl8k_post_cmd(hw, &cmd->header);
3901
3902         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
3903
3904         kfree(cmd);
3905 }
3906
3907 /*
3908  * CMD_SET_NEW_STN.
3909  */
3910 struct mwl8k_cmd_set_new_stn {
3911         struct mwl8k_cmd_pkt header;
3912         __le16 aid;
3913         __u8 mac_addr[6];
3914         __le16 stn_id;
3915         __le16 action;
3916         __le16 rsvd;
3917         __le32 legacy_rates;
3918         __u8 ht_rates[4];
3919         __le16 cap_info;
3920         __le16 ht_capabilities_info;
3921         __u8 mac_ht_param_info;
3922         __u8 rev;
3923         __u8 control_channel;
3924         __u8 add_channel;
3925         __le16 op_mode;
3926         __le16 stbc;
3927         __u8 add_qos_info;
3928         __u8 is_qos_sta;
3929         __le32 fw_sta_ptr;
3930 } __packed;
3931
3932 #define MWL8K_STA_ACTION_ADD            0
3933 #define MWL8K_STA_ACTION_REMOVE         2
3934
3935 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3936                                      struct ieee80211_vif *vif,
3937                                      struct ieee80211_sta *sta)
3938 {
3939         struct mwl8k_cmd_set_new_stn *cmd;
3940         u32 rates;
3941         int rc;
3942
3943         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3944         if (cmd == NULL)
3945                 return -ENOMEM;
3946
3947         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3948         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3949         cmd->aid = cpu_to_le16(sta->aid);
3950         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3951         cmd->stn_id = cpu_to_le16(sta->aid);
3952         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3953         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3954                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3955         else
3956                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3957         cmd->legacy_rates = cpu_to_le32(rates);
3958         if (sta->ht_cap.ht_supported) {
3959                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3960                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3961                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3962                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3963                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3964                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3965                         ((sta->ht_cap.ampdu_density & 7) << 2);
3966                 cmd->is_qos_sta = 1;
3967         }
3968
3969         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3970         kfree(cmd);
3971
3972         return rc;
3973 }
3974
3975 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3976                                           struct ieee80211_vif *vif)
3977 {
3978         struct mwl8k_cmd_set_new_stn *cmd;
3979         int rc;
3980
3981         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3982         if (cmd == NULL)
3983                 return -ENOMEM;
3984
3985         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3986         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3987         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3988
3989         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3990         kfree(cmd);
3991
3992         return rc;
3993 }
3994
3995 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3996                                      struct ieee80211_vif *vif, u8 *addr)
3997 {
3998         struct mwl8k_cmd_set_new_stn *cmd;
3999         struct mwl8k_priv *priv = hw->priv;
4000         int rc, i;
4001         u8 idx;
4002
4003         spin_lock(&priv->stream_lock);
4004         /* Destroy any active ampdu streams for this sta */
4005         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4006                 struct mwl8k_ampdu_stream *s;
4007                 s = &priv->ampdu[i];
4008                 if (s->state != AMPDU_NO_STREAM) {
4009                         if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4010                                 if (s->state == AMPDU_STREAM_ACTIVE) {
4011                                         idx = s->idx;
4012                                         spin_unlock(&priv->stream_lock);
4013                                         mwl8k_destroy_ba(hw, idx);
4014                                         spin_lock(&priv->stream_lock);
4015                                 } else if (s->state == AMPDU_STREAM_NEW) {
4016                                         mwl8k_remove_stream(hw, s);
4017                                 }
4018                         }
4019                 }
4020         }
4021
4022         spin_unlock(&priv->stream_lock);
4023
4024         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4025         if (cmd == NULL)
4026                 return -ENOMEM;
4027
4028         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4029         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4030         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4031         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4032
4033         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4034         kfree(cmd);
4035
4036         return rc;
4037 }
4038
4039 /*
4040  * CMD_UPDATE_ENCRYPTION.
4041  */
4042
4043 #define MAX_ENCR_KEY_LENGTH     16
4044 #define MIC_KEY_LENGTH          8
4045
4046 struct mwl8k_cmd_update_encryption {
4047         struct mwl8k_cmd_pkt header;
4048
4049         __le32 action;
4050         __le32 reserved;
4051         __u8 mac_addr[6];
4052         __u8 encr_type;
4053
4054 } __packed;
4055
4056 struct mwl8k_cmd_set_key {
4057         struct mwl8k_cmd_pkt header;
4058
4059         __le32 action;
4060         __le32 reserved;
4061         __le16 length;
4062         __le16 key_type_id;
4063         __le32 key_info;
4064         __le32 key_id;
4065         __le16 key_len;
4066         __u8 key_material[MAX_ENCR_KEY_LENGTH];
4067         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4068         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4069         __le16 tkip_rsc_low;
4070         __le32 tkip_rsc_high;
4071         __le16 tkip_tsc_low;
4072         __le32 tkip_tsc_high;
4073         __u8 mac_addr[6];
4074 } __packed;
4075
4076 enum {
4077         MWL8K_ENCR_ENABLE,
4078         MWL8K_ENCR_SET_KEY,
4079         MWL8K_ENCR_REMOVE_KEY,
4080         MWL8K_ENCR_SET_GROUP_KEY,
4081 };
4082
4083 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
4084 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
4085 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
4086 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
4087 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
4088
4089 enum {
4090         MWL8K_ALG_WEP,
4091         MWL8K_ALG_TKIP,
4092         MWL8K_ALG_CCMP,
4093 };
4094
4095 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
4096 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
4097 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
4098 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
4099 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
4100
4101 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4102                                               struct ieee80211_vif *vif,
4103                                               u8 *addr,
4104                                               u8 encr_type)
4105 {
4106         struct mwl8k_cmd_update_encryption *cmd;
4107         int rc;
4108
4109         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4110         if (cmd == NULL)
4111                 return -ENOMEM;
4112
4113         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4114         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4115         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4116         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4117         cmd->encr_type = encr_type;
4118
4119         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4120         kfree(cmd);
4121
4122         return rc;
4123 }
4124
4125 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4126                                                 u8 *addr,
4127                                                 struct ieee80211_key_conf *key)
4128 {
4129         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4130         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4131         cmd->length = cpu_to_le16(sizeof(*cmd) -
4132                                 offsetof(struct mwl8k_cmd_set_key, length));
4133         cmd->key_id = cpu_to_le32(key->keyidx);
4134         cmd->key_len = cpu_to_le16(key->keylen);
4135         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4136
4137         switch (key->cipher) {
4138         case WLAN_CIPHER_SUITE_WEP40:
4139         case WLAN_CIPHER_SUITE_WEP104:
4140                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4141                 if (key->keyidx == 0)
4142                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4143
4144                 break;
4145         case WLAN_CIPHER_SUITE_TKIP:
4146                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4147                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4148                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4149                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4150                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4151                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4152                 break;
4153         case WLAN_CIPHER_SUITE_CCMP:
4154                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4155                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4156                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4157                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4158                 break;
4159         default:
4160                 return -ENOTSUPP;
4161         }
4162
4163         return 0;
4164 }
4165
4166 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4167                                                 struct ieee80211_vif *vif,
4168                                                 u8 *addr,
4169                                                 struct ieee80211_key_conf *key)
4170 {
4171         struct mwl8k_cmd_set_key *cmd;
4172         int rc;
4173         int keymlen;
4174         u32 action;
4175         u8 idx;
4176         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4177
4178         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4179         if (cmd == NULL)
4180                 return -ENOMEM;
4181
4182         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4183         if (rc < 0)
4184                 goto done;
4185
4186         idx = key->keyidx;
4187
4188         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4189                 action = MWL8K_ENCR_SET_KEY;
4190         else
4191                 action = MWL8K_ENCR_SET_GROUP_KEY;
4192
4193         switch (key->cipher) {
4194         case WLAN_CIPHER_SUITE_WEP40:
4195         case WLAN_CIPHER_SUITE_WEP104:
4196                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4197                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4198                                                 sizeof(*key) + key->keylen);
4199                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4200                 }
4201
4202                 keymlen = key->keylen;
4203                 action = MWL8K_ENCR_SET_KEY;
4204                 break;
4205         case WLAN_CIPHER_SUITE_TKIP:
4206                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4207                 break;
4208         case WLAN_CIPHER_SUITE_CCMP:
4209                 keymlen = key->keylen;
4210                 break;
4211         default:
4212                 rc = -ENOTSUPP;
4213                 goto done;
4214         }
4215
4216         memcpy(cmd->key_material, key->key, keymlen);
4217         cmd->action = cpu_to_le32(action);
4218
4219         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4220 done:
4221         kfree(cmd);
4222
4223         return rc;
4224 }
4225
4226 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4227                                                 struct ieee80211_vif *vif,
4228                                                 u8 *addr,
4229                                                 struct ieee80211_key_conf *key)
4230 {
4231         struct mwl8k_cmd_set_key *cmd;
4232         int rc;
4233         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4234
4235         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4236         if (cmd == NULL)
4237                 return -ENOMEM;
4238
4239         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4240         if (rc < 0)
4241                 goto done;
4242
4243         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4244                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4245                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4246
4247         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4248
4249         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4250 done:
4251         kfree(cmd);
4252
4253         return rc;
4254 }
4255
4256 static int mwl8k_set_key(struct ieee80211_hw *hw,
4257                          enum set_key_cmd cmd_param,
4258                          struct ieee80211_vif *vif,
4259                          struct ieee80211_sta *sta,
4260                          struct ieee80211_key_conf *key)
4261 {
4262         int rc = 0;
4263         u8 encr_type;
4264         u8 *addr;
4265         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4266         struct mwl8k_priv *priv = hw->priv;
4267
4268         if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4269                 return -EOPNOTSUPP;
4270
4271         if (sta == NULL)
4272                 addr = vif->addr;
4273         else
4274                 addr = sta->addr;
4275
4276         if (cmd_param == SET_KEY) {
4277                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4278                 if (rc)
4279                         goto out;
4280
4281                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4282                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4283                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4284                 else
4285                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4286
4287                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4288                                                                 encr_type);
4289                 if (rc)
4290                         goto out;
4291
4292                 mwl8k_vif->is_hw_crypto_enabled = true;
4293
4294         } else {
4295                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4296
4297                 if (rc)
4298                         goto out;
4299         }
4300 out:
4301         return rc;
4302 }
4303
4304 /*
4305  * CMD_UPDATE_STADB.
4306  */
4307 struct ewc_ht_info {
4308         __le16  control1;
4309         __le16  control2;
4310         __le16  control3;
4311 } __packed;
4312
4313 struct peer_capability_info {
4314         /* Peer type - AP vs. STA.  */
4315         __u8    peer_type;
4316
4317         /* Basic 802.11 capabilities from assoc resp.  */
4318         __le16  basic_caps;
4319
4320         /* Set if peer supports 802.11n high throughput (HT).  */
4321         __u8    ht_support;
4322
4323         /* Valid if HT is supported.  */
4324         __le16  ht_caps;
4325         __u8    extended_ht_caps;
4326         struct ewc_ht_info      ewc_info;
4327
4328         /* Legacy rate table. Intersection of our rates and peer rates.  */
4329         __u8    legacy_rates[12];
4330
4331         /* HT rate table. Intersection of our rates and peer rates.  */
4332         __u8    ht_rates[16];
4333         __u8    pad[16];
4334
4335         /* If set, interoperability mode, no proprietary extensions.  */
4336         __u8    interop;
4337         __u8    pad2;
4338         __u8    station_id;
4339         __le16  amsdu_enabled;
4340 } __packed;
4341
4342 struct mwl8k_cmd_update_stadb {
4343         struct mwl8k_cmd_pkt header;
4344
4345         /* See STADB_ACTION_TYPE */
4346         __le32  action;
4347
4348         /* Peer MAC address */
4349         __u8    peer_addr[ETH_ALEN];
4350
4351         __le32  reserved;
4352
4353         /* Peer info - valid during add/update.  */
4354         struct peer_capability_info     peer_info;
4355 } __packed;
4356
4357 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4358 #define MWL8K_STA_DB_DEL_ENTRY          2
4359
4360 /* Peer Entry flags - used to define the type of the peer node */
4361 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4362
4363 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4364                                       struct ieee80211_vif *vif,
4365                                       struct ieee80211_sta *sta)
4366 {
4367         struct mwl8k_cmd_update_stadb *cmd;
4368         struct peer_capability_info *p;
4369         u32 rates;
4370         int rc;
4371
4372         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4373         if (cmd == NULL)
4374                 return -ENOMEM;
4375
4376         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4377         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4378         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4379         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4380
4381         p = &cmd->peer_info;
4382         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4383         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4384         p->ht_support = sta->ht_cap.ht_supported;
4385         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4386         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4387                 ((sta->ht_cap.ampdu_density & 7) << 2);
4388         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4389                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4390         else
4391                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4392         legacy_rate_mask_to_array(p->legacy_rates, rates);
4393         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4394         p->interop = 1;
4395         p->amsdu_enabled = 0;
4396
4397         rc = mwl8k_post_cmd(hw, &cmd->header);
4398         if (!rc)
4399                 rc = p->station_id;
4400         kfree(cmd);
4401
4402         return rc;
4403 }
4404
4405 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4406                                       struct ieee80211_vif *vif, u8 *addr)
4407 {
4408         struct mwl8k_cmd_update_stadb *cmd;
4409         int rc;
4410
4411         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4412         if (cmd == NULL)
4413                 return -ENOMEM;
4414
4415         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4416         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4417         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4418         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4419
4420         rc = mwl8k_post_cmd(hw, &cmd->header);
4421         kfree(cmd);
4422
4423         return rc;
4424 }
4425
4426
4427 /*
4428  * Interrupt handling.
4429  */
4430 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4431 {
4432         struct ieee80211_hw *hw = dev_id;
4433         struct mwl8k_priv *priv = hw->priv;
4434         u32 status;
4435
4436         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4437         if (!status)
4438                 return IRQ_NONE;
4439
4440         if (status & MWL8K_A2H_INT_TX_DONE) {
4441                 status &= ~MWL8K_A2H_INT_TX_DONE;
4442                 tasklet_schedule(&priv->poll_tx_task);
4443         }
4444
4445         if (status & MWL8K_A2H_INT_RX_READY) {
4446                 status &= ~MWL8K_A2H_INT_RX_READY;
4447                 tasklet_schedule(&priv->poll_rx_task);
4448         }
4449
4450         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4451                 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4452                           priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4453
4454                 atomic_inc(&priv->watchdog_event_pending);
4455                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4456                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4457         }
4458
4459         if (status)
4460                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4461
4462         if (status & MWL8K_A2H_INT_OPC_DONE) {
4463                 if (priv->hostcmd_wait != NULL)
4464                         complete(priv->hostcmd_wait);
4465         }
4466
4467         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4468                 if (!mutex_is_locked(&priv->fw_mutex) &&
4469                     priv->radio_on && priv->pending_tx_pkts)
4470                         mwl8k_tx_start(priv);
4471         }
4472
4473         return IRQ_HANDLED;
4474 }
4475
4476 static void mwl8k_tx_poll(unsigned long data)
4477 {
4478         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4479         struct mwl8k_priv *priv = hw->priv;
4480         int limit;
4481         int i;
4482
4483         limit = 32;
4484
4485         spin_lock_bh(&priv->tx_lock);
4486
4487         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4488                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4489
4490         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4491                 complete(priv->tx_wait);
4492                 priv->tx_wait = NULL;
4493         }
4494
4495         spin_unlock_bh(&priv->tx_lock);
4496
4497         if (limit) {
4498                 writel(~MWL8K_A2H_INT_TX_DONE,
4499                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4500         } else {
4501                 tasklet_schedule(&priv->poll_tx_task);
4502         }
4503 }
4504
4505 static void mwl8k_rx_poll(unsigned long data)
4506 {
4507         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4508         struct mwl8k_priv *priv = hw->priv;
4509         int limit;
4510
4511         limit = 32;
4512         limit -= rxq_process(hw, 0, limit);
4513         limit -= rxq_refill(hw, 0, limit);
4514
4515         if (limit) {
4516                 writel(~MWL8K_A2H_INT_RX_READY,
4517                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4518         } else {
4519                 tasklet_schedule(&priv->poll_rx_task);
4520         }
4521 }
4522
4523
4524 /*
4525  * Core driver operations.
4526  */
4527 static void mwl8k_tx(struct ieee80211_hw *hw,
4528                      struct ieee80211_tx_control *control,
4529                      struct sk_buff *skb)
4530 {
4531         struct mwl8k_priv *priv = hw->priv;
4532         int index = skb_get_queue_mapping(skb);
4533
4534         if (!priv->radio_on) {
4535                 wiphy_debug(hw->wiphy,
4536                             "dropped TX frame since radio disabled\n");
4537                 dev_kfree_skb(skb);
4538                 return;
4539         }
4540
4541         mwl8k_txq_xmit(hw, index, control->sta, skb);
4542 }
4543
4544 static int mwl8k_start(struct ieee80211_hw *hw)
4545 {
4546         struct mwl8k_priv *priv = hw->priv;
4547         int rc;
4548
4549         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4550                          IRQF_SHARED, MWL8K_NAME, hw);
4551         if (rc) {
4552                 priv->irq = -1;
4553                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4554                 return -EIO;
4555         }
4556         priv->irq = priv->pdev->irq;
4557
4558         /* Enable TX reclaim and RX tasklets.  */
4559         tasklet_enable(&priv->poll_tx_task);
4560         tasklet_enable(&priv->poll_rx_task);
4561
4562         /* Enable interrupts */
4563         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4564         iowrite32(MWL8K_A2H_EVENTS,
4565                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4566
4567         rc = mwl8k_fw_lock(hw);
4568         if (!rc) {
4569                 rc = mwl8k_cmd_radio_enable(hw);
4570
4571                 if (!priv->ap_fw) {
4572                         if (!rc)
4573                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4574
4575                         if (!rc)
4576                                 rc = mwl8k_cmd_set_pre_scan(hw);
4577
4578                         if (!rc)
4579                                 rc = mwl8k_cmd_set_post_scan(hw,
4580                                                 "\x00\x00\x00\x00\x00\x00");
4581                 }
4582
4583                 if (!rc)
4584                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4585
4586                 if (!rc)
4587                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4588
4589                 mwl8k_fw_unlock(hw);
4590         }
4591
4592         if (rc) {
4593                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4594                 free_irq(priv->pdev->irq, hw);
4595                 priv->irq = -1;
4596                 tasklet_disable(&priv->poll_tx_task);
4597                 tasklet_disable(&priv->poll_rx_task);
4598         } else {
4599                 ieee80211_wake_queues(hw);
4600         }
4601
4602         return rc;
4603 }
4604
4605 static void mwl8k_stop(struct ieee80211_hw *hw)
4606 {
4607         struct mwl8k_priv *priv = hw->priv;
4608         int i;
4609
4610         if (!priv->hw_restart_in_progress)
4611                 mwl8k_cmd_radio_disable(hw);
4612
4613         ieee80211_stop_queues(hw);
4614
4615         /* Disable interrupts */
4616         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4617         if (priv->irq != -1) {
4618                 free_irq(priv->pdev->irq, hw);
4619                 priv->irq = -1;
4620         }
4621
4622         /* Stop finalize join worker */
4623         cancel_work_sync(&priv->finalize_join_worker);
4624         cancel_work_sync(&priv->watchdog_ba_handle);
4625         if (priv->beacon_skb != NULL)
4626                 dev_kfree_skb(priv->beacon_skb);
4627
4628         /* Stop TX reclaim and RX tasklets.  */
4629         tasklet_disable(&priv->poll_tx_task);
4630         tasklet_disable(&priv->poll_rx_task);
4631
4632         /* Return all skbs to mac80211 */
4633         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4634                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4635 }
4636
4637 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4638
4639 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4640                                struct ieee80211_vif *vif)
4641 {
4642         struct mwl8k_priv *priv = hw->priv;
4643         struct mwl8k_vif *mwl8k_vif;
4644         u32 macids_supported;
4645         int macid, rc;
4646         struct mwl8k_device_info *di;
4647
4648         /*
4649          * Reject interface creation if sniffer mode is active, as
4650          * STA operation is mutually exclusive with hardware sniffer
4651          * mode.  (Sniffer mode is only used on STA firmware.)
4652          */
4653         if (priv->sniffer_enabled) {
4654                 wiphy_info(hw->wiphy,
4655                            "unable to create STA interface because sniffer mode is enabled\n");
4656                 return -EINVAL;
4657         }
4658
4659         di = priv->device_info;
4660         switch (vif->type) {
4661         case NL80211_IFTYPE_AP:
4662                 if (!priv->ap_fw && di->fw_image_ap) {
4663                         /* we must load the ap fw to meet this request */
4664                         if (!list_empty(&priv->vif_list))
4665                                 return -EBUSY;
4666                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4667                         if (rc)
4668                                 return rc;
4669                 }
4670                 macids_supported = priv->ap_macids_supported;
4671                 break;
4672         case NL80211_IFTYPE_STATION:
4673                 if (priv->ap_fw && di->fw_image_sta) {
4674                         if (!list_empty(&priv->vif_list)) {
4675                                 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4676                                            "Adding STA interface for WDS");
4677                         } else {
4678                                 /* we must load the sta fw to
4679                                  * meet this request.
4680                                  */
4681                                 rc = mwl8k_reload_firmware(hw,
4682                                                            di->fw_image_sta);
4683                                 if (rc)
4684                                         return rc;
4685                         }
4686                 }
4687                 macids_supported = priv->sta_macids_supported;
4688                 break;
4689         default:
4690                 return -EINVAL;
4691         }
4692
4693         macid = ffs(macids_supported & ~priv->macids_used);
4694         if (!macid--)
4695                 return -EBUSY;
4696
4697         /* Setup driver private area. */
4698         mwl8k_vif = MWL8K_VIF(vif);
4699         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4700         mwl8k_vif->vif = vif;
4701         mwl8k_vif->macid = macid;
4702         mwl8k_vif->seqno = 0;
4703         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4704         mwl8k_vif->is_hw_crypto_enabled = false;
4705
4706         /* Set the mac address.  */
4707         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4708
4709         if (vif->type == NL80211_IFTYPE_AP)
4710                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4711
4712         priv->macids_used |= 1 << mwl8k_vif->macid;
4713         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4714
4715         return 0;
4716 }
4717
4718 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4719 {
4720         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4721         if (!priv->macids_used)
4722                 return;
4723
4724         priv->macids_used &= ~(1 << vif->macid);
4725         list_del(&vif->list);
4726 }
4727
4728 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4729                                    struct ieee80211_vif *vif)
4730 {
4731         struct mwl8k_priv *priv = hw->priv;
4732         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4733
4734         if (vif->type == NL80211_IFTYPE_AP)
4735                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4736
4737         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4738
4739         mwl8k_remove_vif(priv, mwl8k_vif);
4740 }
4741
4742 static void mwl8k_hw_restart_work(struct work_struct *work)
4743 {
4744         struct mwl8k_priv *priv =
4745                 container_of(work, struct mwl8k_priv, fw_reload);
4746         struct ieee80211_hw *hw = priv->hw;
4747         struct mwl8k_device_info *di;
4748         int rc;
4749
4750         /* If some command is waiting for a response, clear it */
4751         if (priv->hostcmd_wait != NULL) {
4752                 complete(priv->hostcmd_wait);
4753                 priv->hostcmd_wait = NULL;
4754         }
4755
4756         priv->hw_restart_owner = current;
4757         di = priv->device_info;
4758         mwl8k_fw_lock(hw);
4759
4760         if (priv->ap_fw)
4761                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4762         else
4763                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4764
4765         if (rc)
4766                 goto fail;
4767
4768         priv->hw_restart_owner = NULL;
4769         priv->hw_restart_in_progress = false;
4770
4771         /*
4772          * This unlock will wake up the queues and
4773          * also opens the command path for other
4774          * commands
4775          */
4776         mwl8k_fw_unlock(hw);
4777
4778         ieee80211_restart_hw(hw);
4779
4780         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4781
4782         return;
4783 fail:
4784         mwl8k_fw_unlock(hw);
4785
4786         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4787 }
4788
4789 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4790 {
4791         struct ieee80211_conf *conf = &hw->conf;
4792         struct mwl8k_priv *priv = hw->priv;
4793         int rc;
4794
4795         if (conf->flags & IEEE80211_CONF_IDLE) {
4796                 mwl8k_cmd_radio_disable(hw);
4797                 return 0;
4798         }
4799
4800         rc = mwl8k_fw_lock(hw);
4801         if (rc)
4802                 return rc;
4803
4804         rc = mwl8k_cmd_radio_enable(hw);
4805         if (rc)
4806                 goto out;
4807
4808         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4809                 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4810                 if (rc)
4811                         goto out;
4812         }
4813
4814         if (conf->power_level > 18)
4815                 conf->power_level = 18;
4816
4817         if (priv->ap_fw) {
4818
4819                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4820                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4821                         if (rc)
4822                                 goto out;
4823                 }
4824
4825
4826         } else {
4827                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4828                 if (rc)
4829                         goto out;
4830                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4831         }
4832
4833 out:
4834         mwl8k_fw_unlock(hw);
4835
4836         return rc;
4837 }
4838
4839 static void
4840 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4841                            struct ieee80211_bss_conf *info, u32 changed)
4842 {
4843         struct mwl8k_priv *priv = hw->priv;
4844         u32 ap_legacy_rates = 0;
4845         u8 ap_mcs_rates[16];
4846         int rc;
4847
4848         if (mwl8k_fw_lock(hw))
4849                 return;
4850
4851         /*
4852          * No need to capture a beacon if we're no longer associated.
4853          */
4854         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4855                 priv->capture_beacon = false;
4856
4857         /*
4858          * Get the AP's legacy and MCS rates.
4859          */
4860         if (vif->bss_conf.assoc) {
4861                 struct ieee80211_sta *ap;
4862
4863                 rcu_read_lock();
4864
4865                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4866                 if (ap == NULL) {
4867                         rcu_read_unlock();
4868                         goto out;
4869                 }
4870
4871                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4872                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4873                 } else {
4874                         ap_legacy_rates =
4875                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4876                 }
4877                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4878
4879                 rcu_read_unlock();
4880         }
4881
4882         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
4883             !priv->ap_fw) {
4884                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4885                 if (rc)
4886                         goto out;
4887
4888                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4889                 if (rc)
4890                         goto out;
4891         } else {
4892                 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
4893                     priv->ap_fw) {
4894                         int idx;
4895                         int rate;
4896
4897                         /* Use AP firmware specific rate command.
4898                          */
4899                         idx = ffs(vif->bss_conf.basic_rates);
4900                         if (idx)
4901                                 idx--;
4902
4903                         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4904                                 rate = mwl8k_rates_24[idx].hw_value;
4905                         else
4906                                 rate = mwl8k_rates_50[idx].hw_value;
4907
4908                         mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4909                 }
4910         }
4911
4912         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4913                 rc = mwl8k_set_radio_preamble(hw,
4914                                 vif->bss_conf.use_short_preamble);
4915                 if (rc)
4916                         goto out;
4917         }
4918
4919         if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw)  {
4920                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4921                 if (rc)
4922                         goto out;
4923         }
4924
4925         if (vif->bss_conf.assoc && !priv->ap_fw &&
4926             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4927                         BSS_CHANGED_HT))) {
4928                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4929                 if (rc)
4930                         goto out;
4931         }
4932
4933         if (vif->bss_conf.assoc &&
4934             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4935                 /*
4936                  * Finalize the join.  Tell rx handler to process
4937                  * next beacon from our BSSID.
4938                  */
4939                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4940                 priv->capture_beacon = true;
4941         }
4942
4943 out:
4944         mwl8k_fw_unlock(hw);
4945 }
4946
4947 static void
4948 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4949                           struct ieee80211_bss_conf *info, u32 changed)
4950 {
4951         int rc;
4952
4953         if (mwl8k_fw_lock(hw))
4954                 return;
4955
4956         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4957                 rc = mwl8k_set_radio_preamble(hw,
4958                                 vif->bss_conf.use_short_preamble);
4959                 if (rc)
4960                         goto out;
4961         }
4962
4963         if (changed & BSS_CHANGED_BASIC_RATES) {
4964                 int idx;
4965                 int rate;
4966
4967                 /*
4968                  * Use lowest supported basic rate for multicasts
4969                  * and management frames (such as probe responses --
4970                  * beacons will always go out at 1 Mb/s).
4971                  */
4972                 idx = ffs(vif->bss_conf.basic_rates);
4973                 if (idx)
4974                         idx--;
4975
4976                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4977                         rate = mwl8k_rates_24[idx].hw_value;
4978                 else
4979                         rate = mwl8k_rates_50[idx].hw_value;
4980
4981                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4982         }
4983
4984         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4985                 struct sk_buff *skb;
4986
4987                 skb = ieee80211_beacon_get(hw, vif);
4988                 if (skb != NULL) {
4989                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4990                         kfree_skb(skb);
4991                 }
4992         }
4993
4994         if (changed & BSS_CHANGED_BEACON_ENABLED)
4995                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4996
4997 out:
4998         mwl8k_fw_unlock(hw);
4999 }
5000
5001 static void
5002 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5003                        struct ieee80211_bss_conf *info, u32 changed)
5004 {
5005         if (vif->type == NL80211_IFTYPE_STATION)
5006                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5007         if (vif->type == NL80211_IFTYPE_AP)
5008                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5009 }
5010
5011 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5012                                    struct netdev_hw_addr_list *mc_list)
5013 {
5014         struct mwl8k_cmd_pkt *cmd;
5015
5016         /*
5017          * Synthesize and return a command packet that programs the
5018          * hardware multicast address filter.  At this point we don't
5019          * know whether FIF_ALLMULTI is being requested, but if it is,
5020          * we'll end up throwing this packet away and creating a new
5021          * one in mwl8k_configure_filter().
5022          */
5023         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5024
5025         return (unsigned long)cmd;
5026 }
5027
5028 static int
5029 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5030                                unsigned int changed_flags,
5031                                unsigned int *total_flags)
5032 {
5033         struct mwl8k_priv *priv = hw->priv;
5034
5035         /*
5036          * Hardware sniffer mode is mutually exclusive with STA
5037          * operation, so refuse to enable sniffer mode if a STA
5038          * interface is active.
5039          */
5040         if (!list_empty(&priv->vif_list)) {
5041                 if (net_ratelimit())
5042                         wiphy_info(hw->wiphy,
5043                                    "not enabling sniffer mode because STA interface is active\n");
5044                 return 0;
5045         }
5046
5047         if (!priv->sniffer_enabled) {
5048                 if (mwl8k_cmd_enable_sniffer(hw, 1))
5049                         return 0;
5050                 priv->sniffer_enabled = true;
5051         }
5052
5053         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
5054                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5055                         FIF_OTHER_BSS;
5056
5057         return 1;
5058 }
5059
5060 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5061 {
5062         if (!list_empty(&priv->vif_list))
5063                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5064
5065         return NULL;
5066 }
5067
5068 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5069                                    unsigned int changed_flags,
5070                                    unsigned int *total_flags,
5071                                    u64 multicast)
5072 {
5073         struct mwl8k_priv *priv = hw->priv;
5074         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5075
5076         /*
5077          * AP firmware doesn't allow fine-grained control over
5078          * the receive filter.
5079          */
5080         if (priv->ap_fw) {
5081                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5082                 kfree(cmd);
5083                 return;
5084         }
5085
5086         /*
5087          * Enable hardware sniffer mode if FIF_CONTROL or
5088          * FIF_OTHER_BSS is requested.
5089          */
5090         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5091             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5092                 kfree(cmd);
5093                 return;
5094         }
5095
5096         /* Clear unsupported feature flags */
5097         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5098
5099         if (mwl8k_fw_lock(hw)) {
5100                 kfree(cmd);
5101                 return;
5102         }
5103
5104         if (priv->sniffer_enabled) {
5105                 mwl8k_cmd_enable_sniffer(hw, 0);
5106                 priv->sniffer_enabled = false;
5107         }
5108
5109         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5110                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5111                         /*
5112                          * Disable the BSS filter.
5113                          */
5114                         mwl8k_cmd_set_pre_scan(hw);
5115                 } else {
5116                         struct mwl8k_vif *mwl8k_vif;
5117                         const u8 *bssid;
5118
5119                         /*
5120                          * Enable the BSS filter.
5121                          *
5122                          * If there is an active STA interface, use that
5123                          * interface's BSSID, otherwise use a dummy one
5124                          * (where the OUI part needs to be nonzero for
5125                          * the BSSID to be accepted by POST_SCAN).
5126                          */
5127                         mwl8k_vif = mwl8k_first_vif(priv);
5128                         if (mwl8k_vif != NULL)
5129                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
5130                         else
5131                                 bssid = "\x01\x00\x00\x00\x00\x00";
5132
5133                         mwl8k_cmd_set_post_scan(hw, bssid);
5134                 }
5135         }
5136
5137         /*
5138          * If FIF_ALLMULTI is being requested, throw away the command
5139          * packet that ->prepare_multicast() built and replace it with
5140          * a command packet that enables reception of all multicast
5141          * packets.
5142          */
5143         if (*total_flags & FIF_ALLMULTI) {
5144                 kfree(cmd);
5145                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5146         }
5147
5148         if (cmd != NULL) {
5149                 mwl8k_post_cmd(hw, cmd);
5150                 kfree(cmd);
5151         }
5152
5153         mwl8k_fw_unlock(hw);
5154 }
5155
5156 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5157 {
5158         return mwl8k_cmd_set_rts_threshold(hw, value);
5159 }
5160
5161 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5162                             struct ieee80211_vif *vif,
5163                             struct ieee80211_sta *sta)
5164 {
5165         struct mwl8k_priv *priv = hw->priv;
5166
5167         if (priv->ap_fw)
5168                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5169         else
5170                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5171 }
5172
5173 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5174                          struct ieee80211_vif *vif,
5175                          struct ieee80211_sta *sta)
5176 {
5177         struct mwl8k_priv *priv = hw->priv;
5178         int ret;
5179         int i;
5180         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5181         struct ieee80211_key_conf *key;
5182
5183         if (!priv->ap_fw) {
5184                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5185                 if (ret >= 0) {
5186                         MWL8K_STA(sta)->peer_id = ret;
5187                         if (sta->ht_cap.ht_supported)
5188                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5189                         ret = 0;
5190                 }
5191
5192         } else {
5193                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5194         }
5195
5196         for (i = 0; i < NUM_WEP_KEYS; i++) {
5197                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5198                 if (mwl8k_vif->wep_key_conf[i].enabled)
5199                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5200         }
5201         return ret;
5202 }
5203
5204 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5205                          struct ieee80211_vif *vif, u16 queue,
5206                          const struct ieee80211_tx_queue_params *params)
5207 {
5208         struct mwl8k_priv *priv = hw->priv;
5209         int rc;
5210
5211         rc = mwl8k_fw_lock(hw);
5212         if (!rc) {
5213                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5214                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5215
5216                 if (!priv->wmm_enabled)
5217                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5218
5219                 if (!rc) {
5220                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5221                         rc = mwl8k_cmd_set_edca_params(hw, q,
5222                                                        params->cw_min,
5223                                                        params->cw_max,
5224                                                        params->aifs,
5225                                                        params->txop);
5226                 }
5227
5228                 mwl8k_fw_unlock(hw);
5229         }
5230
5231         return rc;
5232 }
5233
5234 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5235                            struct ieee80211_low_level_stats *stats)
5236 {
5237         return mwl8k_cmd_get_stat(hw, stats);
5238 }
5239
5240 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5241                                 struct survey_info *survey)
5242 {
5243         struct mwl8k_priv *priv = hw->priv;
5244         struct ieee80211_conf *conf = &hw->conf;
5245
5246         if (idx != 0)
5247                 return -ENOENT;
5248
5249         survey->channel = conf->channel;
5250         survey->filled = SURVEY_INFO_NOISE_DBM;
5251         survey->noise = priv->noise;
5252
5253         return 0;
5254 }
5255
5256 #define MAX_AMPDU_ATTEMPTS 5
5257
5258 static int
5259 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5260                    enum ieee80211_ampdu_mlme_action action,
5261                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5262                    u8 buf_size)
5263 {
5264
5265         int i, rc = 0;
5266         struct mwl8k_priv *priv = hw->priv;
5267         struct mwl8k_ampdu_stream *stream;
5268         u8 *addr = sta->addr, idx;
5269         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5270
5271         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5272                 return -ENOTSUPP;
5273
5274         spin_lock(&priv->stream_lock);
5275         stream = mwl8k_lookup_stream(hw, addr, tid);
5276
5277         switch (action) {
5278         case IEEE80211_AMPDU_RX_START:
5279         case IEEE80211_AMPDU_RX_STOP:
5280                 break;
5281         case IEEE80211_AMPDU_TX_START:
5282                 /* By the time we get here the hw queues may contain outgoing
5283                  * packets for this RA/TID that are not part of this BA
5284                  * session.  The hw will assign sequence numbers to these
5285                  * packets as they go out.  So if we query the hw for its next
5286                  * sequence number and use that for the SSN here, it may end up
5287                  * being wrong, which will lead to sequence number mismatch at
5288                  * the recipient.  To avoid this, we reset the sequence number
5289                  * to O for the first MPDU in this BA stream.
5290                  */
5291                 *ssn = 0;
5292                 if (stream == NULL) {
5293                         /* This means that somebody outside this driver called
5294                          * ieee80211_start_tx_ba_session.  This is unexpected
5295                          * because we do our own rate control.  Just warn and
5296                          * move on.
5297                          */
5298                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5299                                    "Proceeding anyway.\n", __func__);
5300                         stream = mwl8k_add_stream(hw, sta, tid);
5301                 }
5302                 if (stream == NULL) {
5303                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5304                         rc = -EBUSY;
5305                         break;
5306                 }
5307                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5308
5309                 /* Release the lock before we do the time consuming stuff */
5310                 spin_unlock(&priv->stream_lock);
5311                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5312
5313                         /* Check if link is still valid */
5314                         if (!sta_info->is_ampdu_allowed) {
5315                                 spin_lock(&priv->stream_lock);
5316                                 mwl8k_remove_stream(hw, stream);
5317                                 spin_unlock(&priv->stream_lock);
5318                                 return -EBUSY;
5319                         }
5320
5321                         rc = mwl8k_check_ba(hw, stream, vif);
5322
5323                         /* If HW restart is in progress mwl8k_post_cmd will
5324                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5325                          * such cases
5326                          */
5327                         if (!rc || rc == -EBUSY)
5328                                 break;
5329                         /*
5330                          * HW queues take time to be flushed, give them
5331                          * sufficient time
5332                          */
5333
5334                         msleep(1000);
5335                 }
5336                 spin_lock(&priv->stream_lock);
5337                 if (rc) {
5338                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5339                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5340                         mwl8k_remove_stream(hw, stream);
5341                         rc = -EBUSY;
5342                         break;
5343                 }
5344                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5345                 break;
5346         case IEEE80211_AMPDU_TX_STOP_CONT:
5347         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5348         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5349                 if (stream) {
5350                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5351                                 idx = stream->idx;
5352                                 spin_unlock(&priv->stream_lock);
5353                                 mwl8k_destroy_ba(hw, idx);
5354                                 spin_lock(&priv->stream_lock);
5355                         }
5356                         mwl8k_remove_stream(hw, stream);
5357                 }
5358                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5359                 break;
5360         case IEEE80211_AMPDU_TX_OPERATIONAL:
5361                 BUG_ON(stream == NULL);
5362                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5363                 spin_unlock(&priv->stream_lock);
5364                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5365                 spin_lock(&priv->stream_lock);
5366                 if (!rc)
5367                         stream->state = AMPDU_STREAM_ACTIVE;
5368                 else {
5369                         idx = stream->idx;
5370                         spin_unlock(&priv->stream_lock);
5371                         mwl8k_destroy_ba(hw, idx);
5372                         spin_lock(&priv->stream_lock);
5373                         wiphy_debug(hw->wiphy,
5374                                 "Failed adding stream for sta %pM tid %d\n",
5375                                 addr, tid);
5376                         mwl8k_remove_stream(hw, stream);
5377                 }
5378                 break;
5379
5380         default:
5381                 rc = -ENOTSUPP;
5382         }
5383
5384         spin_unlock(&priv->stream_lock);
5385         return rc;
5386 }
5387
5388 static const struct ieee80211_ops mwl8k_ops = {
5389         .tx                     = mwl8k_tx,
5390         .start                  = mwl8k_start,
5391         .stop                   = mwl8k_stop,
5392         .add_interface          = mwl8k_add_interface,
5393         .remove_interface       = mwl8k_remove_interface,
5394         .config                 = mwl8k_config,
5395         .bss_info_changed       = mwl8k_bss_info_changed,
5396         .prepare_multicast      = mwl8k_prepare_multicast,
5397         .configure_filter       = mwl8k_configure_filter,
5398         .set_key                = mwl8k_set_key,
5399         .set_rts_threshold      = mwl8k_set_rts_threshold,
5400         .sta_add                = mwl8k_sta_add,
5401         .sta_remove             = mwl8k_sta_remove,
5402         .conf_tx                = mwl8k_conf_tx,
5403         .get_stats              = mwl8k_get_stats,
5404         .get_survey             = mwl8k_get_survey,
5405         .ampdu_action           = mwl8k_ampdu_action,
5406 };
5407
5408 static void mwl8k_finalize_join_worker(struct work_struct *work)
5409 {
5410         struct mwl8k_priv *priv =
5411                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5412         struct sk_buff *skb = priv->beacon_skb;
5413         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5414         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5415         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5416                                          mgmt->u.beacon.variable, len);
5417         int dtim_period = 1;
5418
5419         if (tim && tim[1] >= 2)
5420                 dtim_period = tim[3];
5421
5422         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5423
5424         dev_kfree_skb(skb);
5425         priv->beacon_skb = NULL;
5426 }
5427
5428 enum {
5429         MWL8363 = 0,
5430         MWL8687,
5431         MWL8366,
5432 };
5433
5434 #define MWL8K_8366_AP_FW_API 3
5435 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5436 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5437
5438 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5439         [MWL8363] = {
5440                 .part_name      = "88w8363",
5441                 .helper_image   = "mwl8k/helper_8363.fw",
5442                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5443         },
5444         [MWL8687] = {
5445                 .part_name      = "88w8687",
5446                 .helper_image   = "mwl8k/helper_8687.fw",
5447                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5448         },
5449         [MWL8366] = {
5450                 .part_name      = "88w8366",
5451                 .helper_image   = "mwl8k/helper_8366.fw",
5452                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5453                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5454                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5455                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5456         },
5457 };
5458
5459 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5460 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5461 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5462 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5463 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5464 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5465 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5466
5467 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5468         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5469         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5470         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5471         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5472         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5473         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5474         { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5475         { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5476         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5477         { },
5478 };
5479 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5480
5481 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5482 {
5483         int rc;
5484         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5485                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5486                priv->fw_pref, priv->fw_alt);
5487         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5488         if (rc) {
5489                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5490                        pci_name(priv->pdev), priv->fw_alt);
5491                 return rc;
5492         }
5493         return 0;
5494 }
5495
5496 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5497 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5498 {
5499         struct mwl8k_priv *priv = context;
5500         struct mwl8k_device_info *di = priv->device_info;
5501         int rc;
5502
5503         switch (priv->fw_state) {
5504         case FW_STATE_INIT:
5505                 if (!fw) {
5506                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5507                                pci_name(priv->pdev), di->helper_image);
5508                         goto fail;
5509                 }
5510                 priv->fw_helper = fw;
5511                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5512                                       true);
5513                 if (rc && priv->fw_alt) {
5514                         rc = mwl8k_request_alt_fw(priv);
5515                         if (rc)
5516                                 goto fail;
5517                         priv->fw_state = FW_STATE_LOADING_ALT;
5518                 } else if (rc)
5519                         goto fail;
5520                 else
5521                         priv->fw_state = FW_STATE_LOADING_PREF;
5522                 break;
5523
5524         case FW_STATE_LOADING_PREF:
5525                 if (!fw) {
5526                         if (priv->fw_alt) {
5527                                 rc = mwl8k_request_alt_fw(priv);
5528                                 if (rc)
5529                                         goto fail;
5530                                 priv->fw_state = FW_STATE_LOADING_ALT;
5531                         } else
5532                                 goto fail;
5533                 } else {
5534                         priv->fw_ucode = fw;
5535                         rc = mwl8k_firmware_load_success(priv);
5536                         if (rc)
5537                                 goto fail;
5538                         else
5539                                 complete(&priv->firmware_loading_complete);
5540                 }
5541                 break;
5542
5543         case FW_STATE_LOADING_ALT:
5544                 if (!fw) {
5545                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5546                                pci_name(priv->pdev), di->helper_image);
5547                         goto fail;
5548                 }
5549                 priv->fw_ucode = fw;
5550                 rc = mwl8k_firmware_load_success(priv);
5551                 if (rc)
5552                         goto fail;
5553                 else
5554                         complete(&priv->firmware_loading_complete);
5555                 break;
5556
5557         default:
5558                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5559                        MWL8K_NAME, priv->fw_state);
5560                 BUG_ON(1);
5561         }
5562
5563         return;
5564
5565 fail:
5566         priv->fw_state = FW_STATE_ERROR;
5567         complete(&priv->firmware_loading_complete);
5568         device_release_driver(&priv->pdev->dev);
5569         mwl8k_release_firmware(priv);
5570 }
5571
5572 #define MAX_RESTART_ATTEMPTS 1
5573 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5574                                bool nowait)
5575 {
5576         struct mwl8k_priv *priv = hw->priv;
5577         int rc;
5578         int count = MAX_RESTART_ATTEMPTS;
5579
5580 retry:
5581         /* Reset firmware and hardware */
5582         mwl8k_hw_reset(priv);
5583
5584         /* Ask userland hotplug daemon for the device firmware */
5585         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5586         if (rc) {
5587                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5588                 return rc;
5589         }
5590
5591         if (nowait)
5592                 return rc;
5593
5594         /* Load firmware into hardware */
5595         rc = mwl8k_load_firmware(hw);
5596         if (rc)
5597                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5598
5599         /* Reclaim memory once firmware is successfully loaded */
5600         mwl8k_release_firmware(priv);
5601
5602         if (rc && count) {
5603                 /* FW did not start successfully;
5604                  * lets try one more time
5605                  */
5606                 count--;
5607                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5608                 msleep(20);
5609                 goto retry;
5610         }
5611
5612         return rc;
5613 }
5614
5615 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5616 {
5617         struct mwl8k_priv *priv = hw->priv;
5618         int rc = 0;
5619         int i;
5620
5621         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5622                 rc = mwl8k_txq_init(hw, i);
5623                 if (rc)
5624                         break;
5625                 if (priv->ap_fw)
5626                         iowrite32(priv->txq[i].txd_dma,
5627                                   priv->sram + priv->txq_offset[i]);
5628         }
5629         return rc;
5630 }
5631
5632 /* initialize hw after successfully loading a firmware image */
5633 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5634 {
5635         struct mwl8k_priv *priv = hw->priv;
5636         int rc = 0;
5637         int i;
5638
5639         if (priv->ap_fw) {
5640                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5641                 if (priv->rxd_ops == NULL) {
5642                         wiphy_err(hw->wiphy,
5643                                   "Driver does not have AP firmware image support for this hardware\n");
5644                         rc = -ENOENT;
5645                         goto err_stop_firmware;
5646                 }
5647         } else {
5648                 priv->rxd_ops = &rxd_sta_ops;
5649         }
5650
5651         priv->sniffer_enabled = false;
5652         priv->wmm_enabled = false;
5653         priv->pending_tx_pkts = 0;
5654         atomic_set(&priv->watchdog_event_pending, 0);
5655
5656         rc = mwl8k_rxq_init(hw, 0);
5657         if (rc)
5658                 goto err_stop_firmware;
5659         rxq_refill(hw, 0, INT_MAX);
5660
5661         /* For the sta firmware, we need to know the dma addresses of tx queues
5662          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5663          * prior to issuing this command.  But for the AP case, we learn the
5664          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5665          * case we must initialize the tx queues after.
5666          */
5667         priv->num_ampdu_queues = 0;
5668         if (!priv->ap_fw) {
5669                 rc = mwl8k_init_txqs(hw);
5670                 if (rc)
5671                         goto err_free_queues;
5672         }
5673
5674         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5675         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5676         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5677                   MWL8K_A2H_INT_BA_WATCHDOG,
5678                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5679         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5680                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5681
5682         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5683                          IRQF_SHARED, MWL8K_NAME, hw);
5684         if (rc) {
5685                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5686                 goto err_free_queues;
5687         }
5688
5689         /*
5690          * When hw restart is requested,
5691          * mac80211 will take care of clearing
5692          * the ampdu streams, so do not clear
5693          * the ampdu state here
5694          */
5695         if (!priv->hw_restart_in_progress)
5696                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5697
5698         /*
5699          * Temporarily enable interrupts.  Initial firmware host
5700          * commands use interrupts and avoid polling.  Disable
5701          * interrupts when done.
5702          */
5703         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5704
5705         /* Get config data, mac addrs etc */
5706         if (priv->ap_fw) {
5707                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5708                 if (!rc)
5709                         rc = mwl8k_init_txqs(hw);
5710                 if (!rc)
5711                         rc = mwl8k_cmd_set_hw_spec(hw);
5712         } else {
5713                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5714         }
5715         if (rc) {
5716                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5717                 goto err_free_irq;
5718         }
5719
5720         /* Turn radio off */
5721         rc = mwl8k_cmd_radio_disable(hw);
5722         if (rc) {
5723                 wiphy_err(hw->wiphy, "Cannot disable\n");
5724                 goto err_free_irq;
5725         }
5726
5727         /* Clear MAC address */
5728         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5729         if (rc) {
5730                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5731                 goto err_free_irq;
5732         }
5733
5734         /* Configure Antennas */
5735         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5736         if (rc)
5737                 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5738         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5739         if (rc)
5740                 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5741
5742
5743         /* Disable interrupts */
5744         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5745         free_irq(priv->pdev->irq, hw);
5746
5747         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5748                    priv->device_info->part_name,
5749                    priv->hw_rev, hw->wiphy->perm_addr,
5750                    priv->ap_fw ? "AP" : "STA",
5751                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5752                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5753
5754         return 0;
5755
5756 err_free_irq:
5757         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5758         free_irq(priv->pdev->irq, hw);
5759
5760 err_free_queues:
5761         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5762                 mwl8k_txq_deinit(hw, i);
5763         mwl8k_rxq_deinit(hw, 0);
5764
5765 err_stop_firmware:
5766         mwl8k_hw_reset(priv);
5767
5768         return rc;
5769 }
5770
5771 /*
5772  * invoke mwl8k_reload_firmware to change the firmware image after the device
5773  * has already been registered
5774  */
5775 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5776 {
5777         int i, rc = 0;
5778         struct mwl8k_priv *priv = hw->priv;
5779         struct mwl8k_vif *vif, *tmp_vif;
5780
5781         mwl8k_stop(hw);
5782         mwl8k_rxq_deinit(hw, 0);
5783
5784         /*
5785          * All the existing interfaces are re-added by the ieee80211_reconfig;
5786          * which means driver should remove existing interfaces before calling
5787          * ieee80211_restart_hw
5788          */
5789         if (priv->hw_restart_in_progress)
5790                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5791                         mwl8k_remove_vif(priv, vif);
5792
5793         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5794                 mwl8k_txq_deinit(hw, i);
5795
5796         rc = mwl8k_init_firmware(hw, fw_image, false);
5797         if (rc)
5798                 goto fail;
5799
5800         rc = mwl8k_probe_hw(hw);
5801         if (rc)
5802                 goto fail;
5803
5804         if (priv->hw_restart_in_progress)
5805                 return rc;
5806
5807         rc = mwl8k_start(hw);
5808         if (rc)
5809                 goto fail;
5810
5811         rc = mwl8k_config(hw, ~0);
5812         if (rc)
5813                 goto fail;
5814
5815         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5816                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5817                 if (rc)
5818                         goto fail;
5819         }
5820
5821         return rc;
5822
5823 fail:
5824         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5825         return rc;
5826 }
5827
5828 static const struct ieee80211_iface_limit ap_if_limits[] = {
5829         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
5830         { .max = 1,     .types = BIT(NL80211_IFTYPE_STATION) },
5831 };
5832
5833 static const struct ieee80211_iface_combination ap_if_comb = {
5834         .limits = ap_if_limits,
5835         .n_limits = ARRAY_SIZE(ap_if_limits),
5836         .max_interfaces = 8,
5837         .num_different_channels = 1,
5838 };
5839
5840
5841 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5842 {
5843         struct ieee80211_hw *hw = priv->hw;
5844         int i, rc;
5845
5846         rc = mwl8k_load_firmware(hw);
5847         mwl8k_release_firmware(priv);
5848         if (rc) {
5849                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5850                 return rc;
5851         }
5852
5853         /*
5854          * Extra headroom is the size of the required DMA header
5855          * minus the size of the smallest 802.11 frame (CTS frame).
5856          */
5857         hw->extra_tx_headroom =
5858                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5859
5860         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5861
5862         hw->channel_change_time = 10;
5863
5864         hw->queues = MWL8K_TX_WMM_QUEUES;
5865
5866         /* Set rssi values to dBm */
5867         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5868
5869         /*
5870          * Ask mac80211 to not to trigger PS mode
5871          * based on PM bit of incoming frames.
5872          */
5873         if (priv->ap_fw)
5874                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5875
5876         hw->vif_data_size = sizeof(struct mwl8k_vif);
5877         hw->sta_data_size = sizeof(struct mwl8k_sta);
5878
5879         priv->macids_used = 0;
5880         INIT_LIST_HEAD(&priv->vif_list);
5881
5882         /* Set default radio state and preamble */
5883         priv->radio_on = false;
5884         priv->radio_short_preamble = false;
5885
5886         /* Finalize join worker */
5887         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5888         /* Handle watchdog ba events */
5889         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5890         /* To reload the firmware if it crashes */
5891         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5892
5893         /* TX reclaim and RX tasklets.  */
5894         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5895         tasklet_disable(&priv->poll_tx_task);
5896         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5897         tasklet_disable(&priv->poll_rx_task);
5898
5899         /* Power management cookie */
5900         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5901         if (priv->cookie == NULL)
5902                 return -ENOMEM;
5903
5904         mutex_init(&priv->fw_mutex);
5905         priv->fw_mutex_owner = NULL;
5906         priv->fw_mutex_depth = 0;
5907         priv->hostcmd_wait = NULL;
5908
5909         spin_lock_init(&priv->tx_lock);
5910
5911         spin_lock_init(&priv->stream_lock);
5912
5913         priv->tx_wait = NULL;
5914
5915         rc = mwl8k_probe_hw(hw);
5916         if (rc)
5917                 goto err_free_cookie;
5918
5919         hw->wiphy->interface_modes = 0;
5920
5921         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5922                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5923                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5924                 hw->wiphy->iface_combinations = &ap_if_comb;
5925                 hw->wiphy->n_iface_combinations = 1;
5926         }
5927
5928         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5929                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5930
5931         rc = ieee80211_register_hw(hw);
5932         if (rc) {
5933                 wiphy_err(hw->wiphy, "Cannot register device\n");
5934                 goto err_unprobe_hw;
5935         }
5936
5937         return 0;
5938
5939 err_unprobe_hw:
5940         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5941                 mwl8k_txq_deinit(hw, i);
5942         mwl8k_rxq_deinit(hw, 0);
5943
5944 err_free_cookie:
5945         if (priv->cookie != NULL)
5946                 pci_free_consistent(priv->pdev, 4,
5947                                 priv->cookie, priv->cookie_dma);
5948
5949         return rc;
5950 }
5951 static int mwl8k_probe(struct pci_dev *pdev,
5952                                  const struct pci_device_id *id)
5953 {
5954         static int printed_version;
5955         struct ieee80211_hw *hw;
5956         struct mwl8k_priv *priv;
5957         struct mwl8k_device_info *di;
5958         int rc;
5959
5960         if (!printed_version) {
5961                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5962                 printed_version = 1;
5963         }
5964
5965
5966         rc = pci_enable_device(pdev);
5967         if (rc) {
5968                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5969                        MWL8K_NAME);
5970                 return rc;
5971         }
5972
5973         rc = pci_request_regions(pdev, MWL8K_NAME);
5974         if (rc) {
5975                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5976                        MWL8K_NAME);
5977                 goto err_disable_device;
5978         }
5979
5980         pci_set_master(pdev);
5981
5982
5983         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5984         if (hw == NULL) {
5985                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5986                 rc = -ENOMEM;
5987                 goto err_free_reg;
5988         }
5989
5990         SET_IEEE80211_DEV(hw, &pdev->dev);
5991         pci_set_drvdata(pdev, hw);
5992
5993         priv = hw->priv;
5994         priv->hw = hw;
5995         priv->pdev = pdev;
5996         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5997
5998
5999         priv->sram = pci_iomap(pdev, 0, 0x10000);
6000         if (priv->sram == NULL) {
6001                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6002                 rc = -EIO;
6003                 goto err_iounmap;
6004         }
6005
6006         /*
6007          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6008          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6009          */
6010         priv->regs = pci_iomap(pdev, 1, 0x10000);
6011         if (priv->regs == NULL) {
6012                 priv->regs = pci_iomap(pdev, 2, 0x10000);
6013                 if (priv->regs == NULL) {
6014                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
6015                         rc = -EIO;
6016                         goto err_iounmap;
6017                 }
6018         }
6019
6020         /*
6021          * Choose the initial fw image depending on user input.  If a second
6022          * image is available, make it the alternative image that will be
6023          * loaded if the first one fails.
6024          */
6025         init_completion(&priv->firmware_loading_complete);
6026         di = priv->device_info;
6027         if (ap_mode_default && di->fw_image_ap) {
6028                 priv->fw_pref = di->fw_image_ap;
6029                 priv->fw_alt = di->fw_image_sta;
6030         } else if (!ap_mode_default && di->fw_image_sta) {
6031                 priv->fw_pref = di->fw_image_sta;
6032                 priv->fw_alt = di->fw_image_ap;
6033         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6034                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
6035                 priv->fw_pref = di->fw_image_sta;
6036         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6037                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
6038                 priv->fw_pref = di->fw_image_ap;
6039         }
6040         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6041         if (rc)
6042                 goto err_stop_firmware;
6043
6044         priv->hw_restart_in_progress = false;
6045
6046         priv->running_bsses = 0;
6047
6048         return rc;
6049
6050 err_stop_firmware:
6051         mwl8k_hw_reset(priv);
6052
6053 err_iounmap:
6054         if (priv->regs != NULL)
6055                 pci_iounmap(pdev, priv->regs);
6056
6057         if (priv->sram != NULL)
6058                 pci_iounmap(pdev, priv->sram);
6059
6060         pci_set_drvdata(pdev, NULL);
6061         ieee80211_free_hw(hw);
6062
6063 err_free_reg:
6064         pci_release_regions(pdev);
6065
6066 err_disable_device:
6067         pci_disable_device(pdev);
6068
6069         return rc;
6070 }
6071
6072 static void mwl8k_remove(struct pci_dev *pdev)
6073 {
6074         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6075         struct mwl8k_priv *priv;
6076         int i;
6077
6078         if (hw == NULL)
6079                 return;
6080         priv = hw->priv;
6081
6082         wait_for_completion(&priv->firmware_loading_complete);
6083
6084         if (priv->fw_state == FW_STATE_ERROR) {
6085                 mwl8k_hw_reset(priv);
6086                 goto unmap;
6087         }
6088
6089         ieee80211_stop_queues(hw);
6090
6091         ieee80211_unregister_hw(hw);
6092
6093         /* Remove TX reclaim and RX tasklets.  */
6094         tasklet_kill(&priv->poll_tx_task);
6095         tasklet_kill(&priv->poll_rx_task);
6096
6097         /* Stop hardware */
6098         mwl8k_hw_reset(priv);
6099
6100         /* Return all skbs to mac80211 */
6101         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6102                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6103
6104         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6105                 mwl8k_txq_deinit(hw, i);
6106
6107         mwl8k_rxq_deinit(hw, 0);
6108
6109         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6110
6111 unmap:
6112         pci_iounmap(pdev, priv->regs);
6113         pci_iounmap(pdev, priv->sram);
6114         pci_set_drvdata(pdev, NULL);
6115         ieee80211_free_hw(hw);
6116         pci_release_regions(pdev);
6117         pci_disable_device(pdev);
6118 }
6119
6120 static struct pci_driver mwl8k_driver = {
6121         .name           = MWL8K_NAME,
6122         .id_table       = mwl8k_pci_id_table,
6123         .probe          = mwl8k_probe,
6124         .remove         = mwl8k_remove,
6125 };
6126
6127 module_pci_driver(mwl8k_driver);
6128
6129 MODULE_DESCRIPTION(MWL8K_DESC);
6130 MODULE_VERSION(MWL8K_VERSION);
6131 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6132 MODULE_LICENSE("GPL");