drivers/net/wireless/marvell/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/interrupt.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/sched.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/list.h>
  18 #include <linux/pci.h>
  19 #include <linux/delay.h>
  20 #include <linux/completion.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/slab.h>
  23 #include <net/mac80211.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/firmware.h>
  26 #include <linux/workqueue.h>
  27
  28 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  29 #define MWL8K_NAME      KBUILD_MODNAME
  30 #define MWL8K_VERSION   "0.13"
  31
  32 /* Module parameters */
  33 static bool ap_mode_default;
  34 module_param(ap_mode_default, bool, 0);
  35 MODULE_PARM_DESC(ap_mode_default,
  36                  "Set to 1 to make ap mode the default instead of sta mode");
  37
  38 /* Register definitions */
  39 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  40 #define  MWL8K_MODE_STA                          0x0000005a
  41 #define  MWL8K_MODE_AP                           0x000000a5
  42 #define MWL8K_HIU_INT_CODE                      0x00000c14
  43 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  44 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  45 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  46 #define MWL8K_HIU_SCRATCH                       0x00000c40
  47
  48 /* Host->device communications */
  49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  51 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  54 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  55 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  56 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  57 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  58
  59 /* Device->host communications */
  60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  62 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  65 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  66 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  67 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  68 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  69 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  70 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  71 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  72 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  73 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  74 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  75 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  76
  77 /* HW micro second timer register
  78  * located at offset 0xA600. This
  79  * will be used to timestamp tx
  80  * packets.
  81  */
  82
  83 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  84 #define BBU_RXRDY_CNT_REG                       0x0000a860
  85 #define NOK_CCA_CNT_REG                         0x0000a6a0
  86 #define BBU_AVG_NOISE_VAL                       0x67
  87
  88 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  89                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  90                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  91                                  MWL8K_A2H_INT_RADAR_DETECT | \
  92                                  MWL8K_A2H_INT_RADIO_ON | \
  93                                  MWL8K_A2H_INT_RADIO_OFF | \
  94                                  MWL8K_A2H_INT_MAC_EVENT | \
  95                                  MWL8K_A2H_INT_OPC_DONE | \
  96                                  MWL8K_A2H_INT_RX_READY | \
  97                                  MWL8K_A2H_INT_TX_DONE | \
  98                                  MWL8K_A2H_INT_BA_WATCHDOG)
  99
 100 #define MWL8K_RX_QUEUES         1
 101 #define MWL8K_TX_WMM_QUEUES     4
 102 #define MWL8K_MAX_AMPDU_QUEUES  8
 103 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 104 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 105
 106 /* txpriorities are mapped with hw queues.
 107  * Each hw queue has a txpriority.
 108  */
 109 #define TOTAL_HW_TX_QUEUES      8
 110
 111 /* Each HW queue can have one AMPDU stream.
 112  * But, because one of the hw queue is reserved,
 113  * maximum AMPDU queues that can be created are
 114  * one short of total tx queues.
 115  */
 116 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
 117
 118 #define MWL8K_NUM_CHANS 18
 119
 120 struct rxd_ops {
 121         int rxd_size;
 122         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 123         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 124         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 125                            __le16 *qos, s8 *noise);
 126 };
 127
 128 struct mwl8k_device_info {
 129         char *part_name;
 130         char *helper_image;
 131         char *fw_image_sta;
 132         char *fw_image_ap;
 133         struct rxd_ops *ap_rxd_ops;
 134         u32 fw_api_ap;
 135 };
 136
 137 struct mwl8k_rx_queue {
 138         int rxd_count;
 139
 140         /* hw receives here */
 141         int head;
 142
 143         /* refill descs here */
 144         int tail;
 145
 146         void *rxd;
 147         dma_addr_t rxd_dma;
 148         struct {
 149                 struct sk_buff *skb;
 150                 DEFINE_DMA_UNMAP_ADDR(dma);
 151         } *buf;
 152 };
 153
 154 struct mwl8k_tx_queue {
 155         /* hw transmits here */
 156         int head;
 157
 158         /* sw appends here */
 159         int tail;
 160
 161         unsigned int len;
 162         struct mwl8k_tx_desc *txd;
 163         dma_addr_t txd_dma;
 164         struct sk_buff **skb;
 165 };
 166
 167 enum {
 168         AMPDU_NO_STREAM,
 169         AMPDU_STREAM_NEW,
 170         AMPDU_STREAM_IN_PROGRESS,
 171         AMPDU_STREAM_ACTIVE,
 172 };
 173
 174 struct mwl8k_ampdu_stream {
 175         struct ieee80211_sta *sta;
 176         u8 tid;
 177         u8 state;
 178         u8 idx;
 179 };
 180
 181 struct mwl8k_priv {
 182         struct ieee80211_hw *hw;
 183         struct pci_dev *pdev;
 184         int irq;
 185
 186         struct mwl8k_device_info *device_info;
 187
 188         void __iomem *sram;
 189         void __iomem *regs;
 190
 191         /* firmware */
 192         const struct firmware *fw_helper;
 193         const struct firmware *fw_ucode;
 194
 195         /* hardware/firmware parameters */
 196         bool ap_fw;
 197         struct rxd_ops *rxd_ops;
 198         struct ieee80211_supported_band band_24;
 199         struct ieee80211_channel channels_24[14];
 200         struct ieee80211_rate rates_24[13];
 201         struct ieee80211_supported_band band_50;
 202         struct ieee80211_channel channels_50[4];
 203         struct ieee80211_rate rates_50[8];
 204         u32 ap_macids_supported;
 205         u32 sta_macids_supported;
 206
 207         /* Ampdu stream information */
 208         u8 num_ampdu_queues;
 209         spinlock_t stream_lock;
 210         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 211         struct work_struct watchdog_ba_handle;
 212
 213         /* firmware access */
 214         struct mutex fw_mutex;
 215         struct task_struct *fw_mutex_owner;
 216         struct task_struct *hw_restart_owner;
 217         int fw_mutex_depth;
 218         struct completion *hostcmd_wait;
 219
 220         atomic_t watchdog_event_pending;
 221
 222         /* lock held over TX and TX reap */
 223         spinlock_t tx_lock;
 224
 225         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 226         struct completion *tx_wait;
 227
 228         /* List of interfaces.  */
 229         u32 macids_used;
 230         struct list_head vif_list;
 231
 232         /* power management status cookie from firmware */
 233         u32 *cookie;
 234         dma_addr_t cookie_dma;
 235
 236         u16 num_mcaddrs;
 237         u8 hw_rev;
 238         u32 fw_rev;
 239         u32 caps;
 240
 241         /*
 242          * Running count of TX packets in flight, to avoid
 243          * iterating over the transmit rings each time.
 244          */
 245         int pending_tx_pkts;
 246
 247         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 248         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 249         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 250
 251         bool radio_on;
 252         bool radio_short_preamble;
 253         bool sniffer_enabled;
 254         bool wmm_enabled;
 255
 256         /* XXX need to convert this to handle multiple interfaces */
 257         bool capture_beacon;
 258         u8 capture_bssid[ETH_ALEN];
 259         struct sk_buff *beacon_skb;
 260
 261         /*
 262          * This FJ worker has to be global as it is scheduled from the
 263          * RX handler.  At this point we don't know which interface it
 264          * belongs to until the list of bssids waiting to complete join
 265          * is checked.
 266          */
 267         struct work_struct finalize_join_worker;
 268
 269         /* Tasklet to perform TX reclaim.  */
 270         struct tasklet_struct poll_tx_task;
 271
 272         /* Tasklet to perform RX.  */
 273         struct tasklet_struct poll_rx_task;
 274
 275         /* Most recently reported noise in dBm */
 276         s8 noise;
 277
 278         /*
 279          * preserve the queue configurations so they can be restored if/when
 280          * the firmware image is swapped.
 281          */
 282         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 283
 284         /* To perform the task of reloading the firmware */
 285         struct work_struct fw_reload;
 286         bool hw_restart_in_progress;
 287
 288         /* async firmware loading state */
 289         unsigned fw_state;
 290         char *fw_pref;
 291         char *fw_alt;
 292         bool is_8764;
 293         struct completion firmware_loading_complete;
 294
 295         /* bitmap of running BSSes */
 296         u32 running_bsses;
 297
 298         /* ACS related */
 299         bool sw_scan_start;
 300         struct ieee80211_channel *acs_chan;
 301         unsigned long channel_time;
 302         struct survey_info survey[MWL8K_NUM_CHANS];
 303 };
 304
 305 #define MAX_WEP_KEY_LEN         13
 306 #define NUM_WEP_KEYS            4
 307
 308 /* Per interface specific private data */
 309 struct mwl8k_vif {
 310         struct list_head list;
 311         struct ieee80211_vif *vif;
 312
 313         /* Firmware macid for this vif.  */
 314         int macid;
 315
 316         /* Non AMPDU sequence number assigned by driver.  */
 317         u16 seqno;
 318
 319         /* Saved WEP keys */
 320         struct {
 321                 u8 enabled;
 322                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 323         } wep_key_conf[NUM_WEP_KEYS];
 324
 325         /* BSSID */
 326         u8 bssid[ETH_ALEN];
 327
 328         /* A flag to indicate is HW crypto is enabled for this bssid */
 329         bool is_hw_crypto_enabled;
 330 };
 331 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 332 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 333
 334 struct tx_traffic_info {
 335         u32 start_time;
 336         u32 pkts;
 337 };
 338
 339 #define MWL8K_MAX_TID 8
 340 struct mwl8k_sta {
 341         /* Index into station database. Returned by UPDATE_STADB.  */
 342         u8 peer_id;
 343         u8 is_ampdu_allowed;
 344         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 345 };
 346 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 347
 348 static const struct ieee80211_channel mwl8k_channels_24[] = {
 349         { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
 350         { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
 351         { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
 352         { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
 353         { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
 354         { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
 355         { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
 356         { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
 357         { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
 358         { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
 359         { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
 360         { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
 361         { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
 362         { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
 363 };
 364
 365 static const struct ieee80211_rate mwl8k_rates_24[] = {
 366         { .bitrate = 10, .hw_value = 2, },
 367         { .bitrate = 20, .hw_value = 4, },
 368         { .bitrate = 55, .hw_value = 11, },
 369         { .bitrate = 110, .hw_value = 22, },
 370         { .bitrate = 220, .hw_value = 44, },
 371         { .bitrate = 60, .hw_value = 12, },
 372         { .bitrate = 90, .hw_value = 18, },
 373         { .bitrate = 120, .hw_value = 24, },
 374         { .bitrate = 180, .hw_value = 36, },
 375         { .bitrate = 240, .hw_value = 48, },
 376         { .bitrate = 360, .hw_value = 72, },
 377         { .bitrate = 480, .hw_value = 96, },
 378         { .bitrate = 540, .hw_value = 108, },
 379 };
 380
 381 static const struct ieee80211_channel mwl8k_channels_50[] = {
 382         { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
 383         { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
 384         { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
 385         { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
 386 };
 387
 388 static const struct ieee80211_rate mwl8k_rates_50[] = {
 389         { .bitrate = 60, .hw_value = 12, },
 390         { .bitrate = 90, .hw_value = 18, },
 391         { .bitrate = 120, .hw_value = 24, },
 392         { .bitrate = 180, .hw_value = 36, },
 393         { .bitrate = 240, .hw_value = 48, },
 394         { .bitrate = 360, .hw_value = 72, },
 395         { .bitrate = 480, .hw_value = 96, },
 396         { .bitrate = 540, .hw_value = 108, },
 397 };
 398
 399 /* Set or get info from Firmware */
 400 #define MWL8K_CMD_GET                   0x0000
 401 #define MWL8K_CMD_SET                   0x0001
 402 #define MWL8K_CMD_SET_LIST              0x0002
 403
 404 /* Firmware command codes */
 405 #define MWL8K_CMD_CODE_DNLD             0x0001
 406 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 407 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 408 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 409 #define MWL8K_CMD_GET_STAT              0x0014
 410 #define MWL8K_CMD_BBP_REG_ACCESS        0x001a
 411 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 412 #define MWL8K_CMD_RF_TX_POWER           0x001e
 413 #define MWL8K_CMD_TX_POWER              0x001f
 414 #define MWL8K_CMD_RF_ANTENNA            0x0020
 415 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 416 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 417 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 418 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 419 #define MWL8K_CMD_SET_AID               0x010d
 420 #define MWL8K_CMD_SET_RATE              0x0110
 421 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 422 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 423 #define MWL8K_CMD_SET_SLOT              0x0114
 424 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 425 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 426 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 427 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 428 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 429 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 430 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 431 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 432 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 433 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 434 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 435 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 436 #define MWL8K_CMD_UPDATE_STADB          0x1123
 437 #define MWL8K_CMD_BASTREAM              0x1125
 438
 439 #define MWL8K_LEGACY_5G_RATE_OFFSET \
 440         (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50))
 441
 442 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 443 {
 444         u16 command = le16_to_cpu(cmd);
 445
 446 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 447                                         snprintf(buf, bufsize, "%s", #x);\
 448                                         return buf;\
 449                                         } while (0)
 450         switch (command & ~0x8000) {
 451                 MWL8K_CMDNAME(CODE_DNLD);
 452                 MWL8K_CMDNAME(GET_HW_SPEC);
 453                 MWL8K_CMDNAME(SET_HW_SPEC);
 454                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 455                 MWL8K_CMDNAME(GET_STAT);
 456                 MWL8K_CMDNAME(RADIO_CONTROL);
 457                 MWL8K_CMDNAME(RF_TX_POWER);
 458                 MWL8K_CMDNAME(TX_POWER);
 459                 MWL8K_CMDNAME(RF_ANTENNA);
 460                 MWL8K_CMDNAME(SET_BEACON);
 461                 MWL8K_CMDNAME(SET_PRE_SCAN);
 462                 MWL8K_CMDNAME(SET_POST_SCAN);
 463                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 464                 MWL8K_CMDNAME(SET_AID);
 465                 MWL8K_CMDNAME(SET_RATE);
 466                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 467                 MWL8K_CMDNAME(RTS_THRESHOLD);
 468                 MWL8K_CMDNAME(SET_SLOT);
 469                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 470                 MWL8K_CMDNAME(SET_WMM_MODE);
 471                 MWL8K_CMDNAME(MIMO_CONFIG);
 472                 MWL8K_CMDNAME(USE_FIXED_RATE);
 473                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 474                 MWL8K_CMDNAME(SET_MAC_ADDR);
 475                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 476                 MWL8K_CMDNAME(BSS_START);
 477                 MWL8K_CMDNAME(SET_NEW_STN);
 478                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 479                 MWL8K_CMDNAME(UPDATE_STADB);
 480                 MWL8K_CMDNAME(BASTREAM);
 481                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 482         default:
 483                 snprintf(buf, bufsize, "0x%x", cmd);
 484         }
 485 #undef MWL8K_CMDNAME
 486
 487         return buf;
 488 }
 489
 490 /* Hardware and firmware reset */
 491 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 492 {
 493         iowrite32(MWL8K_H2A_INT_RESET,
 494                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 495         iowrite32(MWL8K_H2A_INT_RESET,
 496                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 497         msleep(20);
 498 }
 499
 500 /* Release fw image */
 501 static void mwl8k_release_fw(const struct firmware **fw)
 502 {
 503         if (*fw == NULL)
 504                 return;
 505         release_firmware(*fw);
 506         *fw = NULL;
 507 }
 508
 509 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 510 {
 511         mwl8k_release_fw(&priv->fw_ucode);
 512         mwl8k_release_fw(&priv->fw_helper);
 513 }
 514
 515 /* states for asynchronous f/w loading */
 516 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 517 enum {
 518         FW_STATE_INIT = 0,
 519         FW_STATE_LOADING_PREF,
 520         FW_STATE_LOADING_ALT,
 521         FW_STATE_ERROR,
 522 };
 523
 524 /* Request fw image */
 525 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 526                             const char *fname, const struct firmware **fw,
 527                             bool nowait)
 528 {
 529         /* release current image */
 530         if (*fw != NULL)
 531                 mwl8k_release_fw(fw);
 532
 533         if (nowait)
 534                 return reject_firmware_nowait(THIS_MODULE, 1, fname,
 535                                                &priv->pdev->dev, GFP_KERNEL,
 536                                                priv, mwl8k_fw_state_machine);
 537         else
 538                 return reject_firmware(fw, fname, &priv->pdev->dev);
 539 }
 540
 541 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 542                                   bool nowait)
 543 {
 544         struct mwl8k_device_info *di = priv->device_info;
 545         int rc;
 546
 547         if (di->helper_image != NULL) {
 548                 if (nowait)
 549                         rc = mwl8k_request_fw(priv, di->helper_image,
 550                                               &priv->fw_helper, true);
 551                 else
 552                         rc = mwl8k_request_fw(priv, di->helper_image,
 553                                               &priv->fw_helper, false);
 554                 if (rc)
 555                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 556                                pci_name(priv->pdev), di->helper_image);
 557
 558                 if (rc || nowait)
 559                         return rc;
 560         }
 561
 562         if (nowait) {
 563                 /*
 564                  * if we get here, no helper image is needed.  Skip the
 565                  * FW_STATE_INIT state.
 566                  */
 567                 priv->fw_state = FW_STATE_LOADING_PREF;
 568                 rc = mwl8k_request_fw(priv, fw_image,
 569                                       &priv->fw_ucode,
 570                                       true);
 571         } else
 572                 rc = mwl8k_request_fw(priv, fw_image,
 573                                       &priv->fw_ucode, false);
 574         if (rc) {
 575                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 576                        pci_name(priv->pdev), fw_image);
 577                 mwl8k_release_fw(&priv->fw_helper);
 578                 return rc;
 579         }
 580
 581         return 0;
 582 }
 583
 584 struct mwl8k_cmd_pkt {
 585         __le16  code;
 586         __le16  length;
 587         __u8    seq_num;
 588         __u8    macid;
 589         __le16  result;
 590         char    payload[0];
 591 } __packed;
 592
 593 /*
 594  * Firmware loading.
 595  */
 596 static int
 597 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 598 {
 599         void __iomem *regs = priv->regs;
 600         dma_addr_t dma_addr;
 601         int loops;
 602
 603         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 604         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 605                 return -ENOMEM;
 606
 607         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 608         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 609         iowrite32(MWL8K_H2A_INT_DOORBELL,
 610                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 611         iowrite32(MWL8K_H2A_INT_DUMMY,
 612                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 613
 614         loops = 1000;
 615         do {
 616                 u32 int_code;
 617                 if (priv->is_8764) {
 618                         int_code = ioread32(regs +
 619                                             MWL8K_HIU_H2A_INTERRUPT_STATUS);
 620                         if (int_code == 0)
 621                                 break;
 622                 } else {
 623                         int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 624                         if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 625                                 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 626                                 break;
 627                         }
 628                 }
 629                 cond_resched();
 630                 udelay(1);
 631         } while (--loops);
 632
 633         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 634
 635         return loops ? 0 : -ETIMEDOUT;
 636 }
 637
 638 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 639                                 const u8 *data, size_t length)
 640 {
 641         struct mwl8k_cmd_pkt *cmd;
 642         int done;
 643         int rc = 0;
 644
 645         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 646         if (cmd == NULL)
 647                 return -ENOMEM;
 648
 649         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 650         cmd->seq_num = 0;
 651         cmd->macid = 0;
 652         cmd->result = 0;
 653
 654         done = 0;
 655         while (length) {
 656                 int block_size = length > 256 ? 256 : length;
 657
 658                 memcpy(cmd->payload, data + done, block_size);
 659                 cmd->length = cpu_to_le16(block_size);
 660
 661                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 662                                                 sizeof(*cmd) + block_size);
 663                 if (rc)
 664                         break;
 665
 666                 done += block_size;
 667                 length -= block_size;
 668         }
 669
 670         if (!rc) {
 671                 cmd->length = 0;
 672                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 673         }
 674
 675         kfree(cmd);
 676
 677         return rc;
 678 }
 679
 680 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 681                                 const u8 *data, size_t length)
 682 {
 683         unsigned char *buffer;
 684         int may_continue, rc = 0;
 685         u32 done, prev_block_size;
 686
 687         buffer = kmalloc(1024, GFP_KERNEL);
 688         if (buffer == NULL)
 689                 return -ENOMEM;
 690
 691         done = 0;
 692         prev_block_size = 0;
 693         may_continue = 1000;
 694         while (may_continue > 0) {
 695                 u32 block_size;
 696
 697                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 698                 if (block_size & 1) {
 699                         block_size &= ~1;
 700                         may_continue--;
 701                 } else {
 702                         done += prev_block_size;
 703                         length -= prev_block_size;
 704                 }
 705
 706                 if (block_size > 1024 || block_size > length) {
 707                         rc = -EOVERFLOW;
 708                         break;
 709                 }
 710
 711                 if (length == 0) {
 712                         rc = 0;
 713                         break;
 714                 }
 715
 716                 if (block_size == 0) {
 717                         rc = -EPROTO;
 718                         may_continue--;
 719                         udelay(1);
 720                         continue;
 721                 }
 722
 723                 prev_block_size = block_size;
 724                 memcpy(buffer, data + done, block_size);
 725
 726                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 727                 if (rc)
 728                         break;
 729         }
 730
 731         if (!rc && length != 0)
 732                 rc = -EREMOTEIO;
 733
 734         kfree(buffer);
 735
 736         return rc;
 737 }
 738
 739 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 740 {
 741         struct mwl8k_priv *priv = hw->priv;
 742         const struct firmware *fw = priv->fw_ucode;
 743         int rc;
 744         int loops;
 745
 746         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
 747                 const struct firmware *helper = priv->fw_helper;
 748
 749                 if (helper == NULL) {
 750                         printk(KERN_ERR "%s: helper image needed but none "
 751                                "given\n", pci_name(priv->pdev));
 752                         return -EINVAL;
 753                 }
 754
 755                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 756                 if (rc) {
 757                         printk(KERN_ERR "%s: unable to load firmware "
 758                                "helper image\n", pci_name(priv->pdev));
 759                         return rc;
 760                 }
 761                 msleep(20);
 762
 763                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 764         } else {
 765                 if (priv->is_8764)
 766                         rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 767                 else
 768                         rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 769         }
 770
 771         if (rc) {
 772                 printk(KERN_ERR "%s: unable to load firmware image\n",
 773                        pci_name(priv->pdev));
 774                 return rc;
 775         }
 776
 777         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 778
 779         loops = 500000;
 780         do {
 781                 u32 ready_code;
 782
 783                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 784                 if (ready_code == MWL8K_FWAP_READY) {
 785                         priv->ap_fw = true;
 786                         break;
 787                 } else if (ready_code == MWL8K_FWSTA_READY) {
 788                         priv->ap_fw = false;
 789                         break;
 790                 }
 791
 792                 cond_resched();
 793                 udelay(1);
 794         } while (--loops);
 795
 796         return loops ? 0 : -ETIMEDOUT;
 797 }
 798
 799
 800 /* DMA header used by firmware and hardware.  */
 801 struct mwl8k_dma_data {
 802         __le16 fwlen;
 803         struct ieee80211_hdr wh;
 804         char data[0];
 805 } __packed;
 806
 807 /* Routines to add/remove DMA header from skb.  */
 808 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 809 {
 810         struct mwl8k_dma_data *tr;
 811         int hdrlen;
 812
 813         tr = (struct mwl8k_dma_data *)skb->data;
 814         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 815
 816         if (hdrlen != sizeof(tr->wh)) {
 817                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 818                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 819                         *((__le16 *)(tr->data - 2)) = qos;
 820                 } else {
 821                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 822                 }
 823         }
 824
 825         if (hdrlen != sizeof(*tr))
 826                 skb_pull(skb, sizeof(*tr) - hdrlen);
 827 }
 828
 829 #define REDUCED_TX_HEADROOM     8
 830
 831 static void
 832 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 833                                                 int head_pad, int tail_pad)
 834 {
 835         struct ieee80211_hdr *wh;
 836         int hdrlen;
 837         int reqd_hdrlen;
 838         struct mwl8k_dma_data *tr;
 839
 840         /*
 841          * Add a firmware DMA header; the firmware requires that we
 842          * present a 2-byte payload length followed by a 4-address
 843          * header (without QoS field), followed (optionally) by any
 844          * WEP/ExtIV header (but only filled in for CCMP).
 845          */
 846         wh = (struct ieee80211_hdr *)skb->data;
 847
 848         hdrlen = ieee80211_hdrlen(wh->frame_control);
 849
 850         /*
 851          * Check if skb_resize is required because of
 852          * tx_headroom adjustment.
 853          */
 854         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 855                                                 + REDUCED_TX_HEADROOM))) {
 856                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 857
 858                         wiphy_err(priv->hw->wiphy,
 859                                         "Failed to reallocate TX buffer\n");
 860                         return;
 861                 }
 862                 skb->truesize += REDUCED_TX_HEADROOM;
 863         }
 864
 865         reqd_hdrlen = sizeof(*tr) + head_pad;
 866
 867         if (hdrlen != reqd_hdrlen)
 868                 skb_push(skb, reqd_hdrlen - hdrlen);
 869
 870         if (ieee80211_is_data_qos(wh->frame_control))
 871                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 872
 873         tr = (struct mwl8k_dma_data *)skb->data;
 874         if (wh != &tr->wh)
 875                 memmove(&tr->wh, wh, hdrlen);
 876         if (hdrlen != sizeof(tr->wh))
 877                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 878
 879         /*
 880          * Firmware length is the length of the fully formed "802.11
 881          * payload".  That is, everything except for the 802.11 header.
 882          * This includes all crypto material including the MIC.
 883          */
 884         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 885 }
 886
 887 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 888                 struct sk_buff *skb)
 889 {
 890         struct ieee80211_hdr *wh;
 891         struct ieee80211_tx_info *tx_info;
 892         struct ieee80211_key_conf *key_conf;
 893         int data_pad;
 894         int head_pad = 0;
 895
 896         wh = (struct ieee80211_hdr *)skb->data;
 897
 898         tx_info = IEEE80211_SKB_CB(skb);
 899
 900         key_conf = NULL;
 901         if (ieee80211_is_data(wh->frame_control))
 902                 key_conf = tx_info->control.hw_key;
 903
 904         /*
 905          * Make sure the packet header is in the DMA header format (4-address
 906          * without QoS), and add head & tail padding when HW crypto is enabled.
 907          *
 908          * We have the following trailer padding requirements:
 909          * - WEP: 4 trailer bytes (ICV)
 910          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 911          * - CCMP: 8 trailer bytes (MIC)
 912          */
 913         data_pad = 0;
 914         if (key_conf != NULL) {
 915                 head_pad = key_conf->iv_len;
 916                 switch (key_conf->cipher) {
 917                 case WLAN_CIPHER_SUITE_WEP40:
 918                 case WLAN_CIPHER_SUITE_WEP104:
 919                         data_pad = 4;
 920                         break;
 921                 case WLAN_CIPHER_SUITE_TKIP:
 922                         data_pad = 12;
 923                         break;
 924                 case WLAN_CIPHER_SUITE_CCMP:
 925                         data_pad = 8;
 926                         break;
 927                 }
 928         }
 929         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 930 }
 931
 932 /*
 933  * Packet reception for 88w8366/88w8764 AP firmware.
 934  */
 935 struct mwl8k_rxd_ap {
 936         __le16 pkt_len;
 937         __u8 sq2;
 938         __u8 rate;
 939         __le32 pkt_phys_addr;
 940         __le32 next_rxd_phys_addr;
 941         __le16 qos_control;
 942         __le16 htsig2;
 943         __le32 hw_rssi_info;
 944         __le32 hw_noise_floor_info;
 945         __u8 noise_floor;
 946         __u8 pad0[3];
 947         __u8 rssi;
 948         __u8 rx_status;
 949         __u8 channel;
 950         __u8 rx_ctrl;
 951 } __packed;
 952
 953 #define MWL8K_AP_RATE_INFO_MCS_FORMAT           0x80
 954 #define MWL8K_AP_RATE_INFO_40MHZ                0x40
 955 #define MWL8K_AP_RATE_INFO_RATEID(x)            ((x) & 0x3f)
 956
 957 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST          0x80
 958
 959 /* 8366/8764 AP rx_status bits */
 960 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK                0x80
 961 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR             0xFF
 962 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR            0x02
 963 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR             0x04
 964 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR            0x08
 965
 966 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 967 {
 968         struct mwl8k_rxd_ap *rxd = _rxd;
 969
 970         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 971         rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
 972 }
 973
 974 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
 975 {
 976         struct mwl8k_rxd_ap *rxd = _rxd;
 977
 978         rxd->pkt_len = cpu_to_le16(len);
 979         rxd->pkt_phys_addr = cpu_to_le32(addr);
 980         wmb();
 981         rxd->rx_ctrl = 0;
 982 }
 983
 984 static int
 985 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 986                      __le16 *qos, s8 *noise)
 987 {
 988         struct mwl8k_rxd_ap *rxd = _rxd;
 989
 990         if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
 991                 return -1;
 992         rmb();
 993
 994         memset(status, 0, sizeof(*status));
 995
 996         status->signal = -rxd->rssi;
 997         *noise = -rxd->noise_floor;
 998
 999         if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
1000                 status->encoding = RX_ENC_HT;
1001                 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
1002                         status->bw = RATE_INFO_BW_40;
1003                 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1004         } else {
1005                 int i;
1006
1007                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1008                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1009                                 status->rate_idx = i;
1010                                 break;
1011                         }
1012                 }
1013         }
1014
1015         if (rxd->channel > 14) {
1016                 status->band = NL80211_BAND_5GHZ;
1017                 if (!(status->encoding == RX_ENC_HT) &&
1018                     status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1019                         status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1020         } else {
1021                 status->band = NL80211_BAND_2GHZ;
1022         }
1023         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1024                                                       status->band);
1025
1026         *qos = rxd->qos_control;
1027
1028         if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1029             (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1030             (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1031                 status->flag |= RX_FLAG_MMIC_ERROR;
1032
1033         return le16_to_cpu(rxd->pkt_len);
1034 }
1035
1036 static struct rxd_ops rxd_ap_ops = {
1037         .rxd_size       = sizeof(struct mwl8k_rxd_ap),
1038         .rxd_init       = mwl8k_rxd_ap_init,
1039         .rxd_refill     = mwl8k_rxd_ap_refill,
1040         .rxd_process    = mwl8k_rxd_ap_process,
1041 };
1042
1043 /*
1044  * Packet reception for STA firmware.
1045  */
1046 struct mwl8k_rxd_sta {
1047         __le16 pkt_len;
1048         __u8 link_quality;
1049         __u8 noise_level;
1050         __le32 pkt_phys_addr;
1051         __le32 next_rxd_phys_addr;
1052         __le16 qos_control;
1053         __le16 rate_info;
1054         __le32 pad0[4];
1055         __u8 rssi;
1056         __u8 channel;
1057         __le16 pad1;
1058         __u8 rx_ctrl;
1059         __u8 rx_status;
1060         __u8 pad2[2];
1061 } __packed;
1062
1063 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1064 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1065 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1066 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1067 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1068 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1069
1070 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1071 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1072 /* ICV=0 or MIC=1 */
1073 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1074 /* Key is uploaded only in failure case */
1075 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1076
1077 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1078 {
1079         struct mwl8k_rxd_sta *rxd = _rxd;
1080
1081         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1082         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1083 }
1084
1085 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1086 {
1087         struct mwl8k_rxd_sta *rxd = _rxd;
1088
1089         rxd->pkt_len = cpu_to_le16(len);
1090         rxd->pkt_phys_addr = cpu_to_le32(addr);
1091         wmb();
1092         rxd->rx_ctrl = 0;
1093 }
1094
1095 static int
1096 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1097                        __le16 *qos, s8 *noise)
1098 {
1099         struct mwl8k_rxd_sta *rxd = _rxd;
1100         u16 rate_info;
1101
1102         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1103                 return -1;
1104         rmb();
1105
1106         rate_info = le16_to_cpu(rxd->rate_info);
1107
1108         memset(status, 0, sizeof(*status));
1109
1110         status->signal = -rxd->rssi;
1111         *noise = -rxd->noise_level;
1112         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1113         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1114
1115         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1116                 status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1117         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1118                 status->bw = RATE_INFO_BW_40;
1119         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1120                 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1121         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1122                 status->encoding = RX_ENC_HT;
1123
1124         if (rxd->channel > 14) {
1125                 status->band = NL80211_BAND_5GHZ;
1126                 if (!(status->encoding == RX_ENC_HT) &&
1127                     status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1128                         status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1129         } else {
1130                 status->band = NL80211_BAND_2GHZ;
1131         }
1132         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1133                                                       status->band);
1134
1135         *qos = rxd->qos_control;
1136         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1137             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1138                 status->flag |= RX_FLAG_MMIC_ERROR;
1139
1140         return le16_to_cpu(rxd->pkt_len);
1141 }
1142
1143 static struct rxd_ops rxd_sta_ops = {
1144         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1145         .rxd_init       = mwl8k_rxd_sta_init,
1146         .rxd_refill     = mwl8k_rxd_sta_refill,
1147         .rxd_process    = mwl8k_rxd_sta_process,
1148 };
1149
1150
1151 #define MWL8K_RX_DESCS          256
1152 #define MWL8K_RX_MAXSZ          3800
1153
1154 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1155 {
1156         struct mwl8k_priv *priv = hw->priv;
1157         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1158         int size;
1159         int i;
1160
1161         rxq->rxd_count = 0;
1162         rxq->head = 0;
1163         rxq->tail = 0;
1164
1165         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1166
1167         rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1168         if (rxq->rxd == NULL) {
1169                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1170                 return -ENOMEM;
1171         }
1172
1173         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1174         if (rxq->buf == NULL) {
1175                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1176                 return -ENOMEM;
1177         }
1178
1179         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1180                 int desc_size;
1181                 void *rxd;
1182                 int nexti;
1183                 dma_addr_t next_dma_addr;
1184
1185                 desc_size = priv->rxd_ops->rxd_size;
1186                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1187
1188                 nexti = i + 1;
1189                 if (nexti == MWL8K_RX_DESCS)
1190                         nexti = 0;
1191                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1192
1193                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1194         }
1195
1196         return 0;
1197 }
1198
1199 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1200 {
1201         struct mwl8k_priv *priv = hw->priv;
1202         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1203         int refilled;
1204
1205         refilled = 0;
1206         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1207                 struct sk_buff *skb;
1208                 dma_addr_t addr;
1209                 int rx;
1210                 void *rxd;
1211
1212                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1213                 if (skb == NULL)
1214                         break;
1215
1216                 addr = pci_map_single(priv->pdev, skb->data,
1217                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1218
1219                 rxq->rxd_count++;
1220                 rx = rxq->tail++;
1221                 if (rxq->tail == MWL8K_RX_DESCS)
1222                         rxq->tail = 0;
1223                 rxq->buf[rx].skb = skb;
1224                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1225
1226                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1227                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1228
1229                 refilled++;
1230         }
1231
1232         return refilled;
1233 }
1234
1235 /* Must be called only when the card's reception is completely halted */
1236 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1237 {
1238         struct mwl8k_priv *priv = hw->priv;
1239         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1240         int i;
1241
1242         if (rxq->rxd == NULL)
1243                 return;
1244
1245         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1246                 if (rxq->buf[i].skb != NULL) {
1247                         pci_unmap_single(priv->pdev,
1248                                          dma_unmap_addr(&rxq->buf[i], dma),
1249                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1250                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1251
1252                         kfree_skb(rxq->buf[i].skb);
1253                         rxq->buf[i].skb = NULL;
1254                 }
1255         }
1256
1257         kfree(rxq->buf);
1258         rxq->buf = NULL;
1259
1260         pci_free_consistent(priv->pdev,
1261                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1262                             rxq->rxd, rxq->rxd_dma);
1263         rxq->rxd = NULL;
1264 }
1265
1266
1267 /*
1268  * Scan a list of BSSIDs to process for finalize join.
1269  * Allows for extension to process multiple BSSIDs.
1270  */
1271 static inline int
1272 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1273 {
1274         return priv->capture_beacon &&
1275                 ieee80211_is_beacon(wh->frame_control) &&
1276                 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1277 }
1278
1279 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1280                                      struct sk_buff *skb)
1281 {
1282         struct mwl8k_priv *priv = hw->priv;
1283
1284         priv->capture_beacon = false;
1285         eth_zero_addr(priv->capture_bssid);
1286
1287         /*
1288          * Use GFP_ATOMIC as rxq_process is called from
1289          * the primary interrupt handler, memory allocation call
1290          * must not sleep.
1291          */
1292         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1293         if (priv->beacon_skb != NULL)
1294                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1295 }
1296
1297 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1298                                                    u8 *bssid)
1299 {
1300         struct mwl8k_vif *mwl8k_vif;
1301
1302         list_for_each_entry(mwl8k_vif,
1303                             vif_list, list) {
1304                 if (memcmp(bssid, mwl8k_vif->bssid,
1305                            ETH_ALEN) == 0)
1306                         return mwl8k_vif;
1307         }
1308
1309         return NULL;
1310 }
1311
1312 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1313 {
1314         struct mwl8k_priv *priv = hw->priv;
1315         struct mwl8k_vif *mwl8k_vif = NULL;
1316         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1317         int processed;
1318
1319         processed = 0;
1320         while (rxq->rxd_count && limit--) {
1321                 struct sk_buff *skb;
1322                 void *rxd;
1323                 int pkt_len;
1324                 struct ieee80211_rx_status status;
1325                 struct ieee80211_hdr *wh;
1326                 __le16 qos;
1327
1328                 skb = rxq->buf[rxq->head].skb;
1329                 if (skb == NULL)
1330                         break;
1331
1332                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1333
1334                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1335                                                         &priv->noise);
1336                 if (pkt_len < 0)
1337                         break;
1338
1339                 rxq->buf[rxq->head].skb = NULL;
1340
1341                 pci_unmap_single(priv->pdev,
1342                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1343                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1344                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1345
1346                 rxq->head++;
1347                 if (rxq->head == MWL8K_RX_DESCS)
1348                         rxq->head = 0;
1349
1350                 rxq->rxd_count--;
1351
1352                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1353
1354                 /*
1355                  * Check for a pending join operation.  Save a
1356                  * copy of the beacon and schedule a tasklet to
1357                  * send a FINALIZE_JOIN command to the firmware.
1358                  */
1359                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1360                         mwl8k_save_beacon(hw, skb);
1361
1362                 if (ieee80211_has_protected(wh->frame_control)) {
1363
1364                         /* Check if hw crypto has been enabled for
1365                          * this bss. If yes, set the status flags
1366                          * accordingly
1367                          */
1368                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1369                                                                 wh->addr1);
1370
1371                         if (mwl8k_vif != NULL &&
1372                             mwl8k_vif->is_hw_crypto_enabled) {
1373                                 /*
1374                                  * When MMIC ERROR is encountered
1375                                  * by the firmware, payload is
1376                                  * dropped and only 32 bytes of
1377                                  * mwl8k Firmware header is sent
1378                                  * to the host.
1379                                  *
1380                                  * We need to add four bytes of
1381                                  * key information.  In it
1382                                  * MAC80211 expects keyidx set to
1383                                  * 0 for triggering Counter
1384                                  * Measure of MMIC failure.
1385                                  */
1386                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1387                                         struct mwl8k_dma_data *tr;
1388                                         tr = (struct mwl8k_dma_data *)skb->data;
1389                                         memset((void *)&(tr->data), 0, 4);
1390                                         pkt_len += 4;
1391                                 }
1392
1393                                 if (!ieee80211_is_auth(wh->frame_control))
1394                                         status.flag |= RX_FLAG_IV_STRIPPED |
1395                                                        RX_FLAG_DECRYPTED |
1396                                                        RX_FLAG_MMIC_STRIPPED;
1397                         }
1398                 }
1399
1400                 skb_put(skb, pkt_len);
1401                 mwl8k_remove_dma_header(skb, qos);
1402                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1403                 ieee80211_rx_irqsafe(hw, skb);
1404
1405                 processed++;
1406         }
1407
1408         return processed;
1409 }
1410
1411
1412 /*
1413  * Packet transmission.
1414  */
1415
1416 #define MWL8K_TXD_STATUS_OK                     0x00000001
1417 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1418 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1419 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1420 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1421
1422 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1423 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1424 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1425 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1426 #define MWL8K_QOS_EOSP                          0x0010
1427
1428 struct mwl8k_tx_desc {
1429         __le32 status;
1430         __u8 data_rate;
1431         __u8 tx_priority;
1432         __le16 qos_control;
1433         __le32 pkt_phys_addr;
1434         __le16 pkt_len;
1435         __u8 dest_MAC_addr[ETH_ALEN];
1436         __le32 next_txd_phys_addr;
1437         __le32 timestamp;
1438         __le16 rate_info;
1439         __u8 peer_id;
1440         __u8 tx_frag_cnt;
1441 } __packed;
1442
1443 #define MWL8K_TX_DESCS          128
1444
1445 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1446 {
1447         struct mwl8k_priv *priv = hw->priv;
1448         struct mwl8k_tx_queue *txq = priv->txq + index;
1449         int size;
1450         int i;
1451
1452         txq->len = 0;
1453         txq->head = 0;
1454         txq->tail = 0;
1455
1456         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1457
1458         txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
1459         if (txq->txd == NULL) {
1460                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1461                 return -ENOMEM;
1462         }
1463
1464         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1465         if (txq->skb == NULL) {
1466                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1467                 txq->txd = NULL;
1468                 return -ENOMEM;
1469         }
1470
1471         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1472                 struct mwl8k_tx_desc *tx_desc;
1473                 int nexti;
1474
1475                 tx_desc = txq->txd + i;
1476                 nexti = (i + 1) % MWL8K_TX_DESCS;
1477
1478                 tx_desc->status = 0;
1479                 tx_desc->next_txd_phys_addr =
1480                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1481         }
1482
1483         return 0;
1484 }
1485
1486 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1487 {
1488         iowrite32(MWL8K_H2A_INT_PPA_READY,
1489                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1490         iowrite32(MWL8K_H2A_INT_DUMMY,
1491                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1492         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1493 }
1494
1495 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1496 {
1497         struct mwl8k_priv *priv = hw->priv;
1498         int i;
1499
1500         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1501                 struct mwl8k_tx_queue *txq = priv->txq + i;
1502                 int fw_owned = 0;
1503                 int drv_owned = 0;
1504                 int unused = 0;
1505                 int desc;
1506
1507                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1508                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1509                         u32 status;
1510
1511                         status = le32_to_cpu(tx_desc->status);
1512                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1513                                 fw_owned++;
1514                         else
1515                                 drv_owned++;
1516
1517                         if (tx_desc->pkt_len == 0)
1518                                 unused++;
1519                 }
1520
1521                 wiphy_err(hw->wiphy,
1522                           "txq[%d] len=%d head=%d tail=%d "
1523                           "fw_owned=%d drv_owned=%d unused=%d\n",
1524                           i,
1525                           txq->len, txq->head, txq->tail,
1526                           fw_owned, drv_owned, unused);
1527         }
1528 }
1529
1530 /*
1531  * Must be called with priv->fw_mutex held and tx queues stopped.
1532  */
1533 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1534
1535 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1536 {
1537         struct mwl8k_priv *priv = hw->priv;
1538         DECLARE_COMPLETION_ONSTACK(tx_wait);
1539         int retry;
1540         int rc;
1541
1542         might_sleep();
1543
1544         /* Since fw restart is in progress, allow only the firmware
1545          * commands from the restart code and block the other
1546          * commands since they are going to fail in any case since
1547          * the firmware has crashed
1548          */
1549         if (priv->hw_restart_in_progress) {
1550                 if (priv->hw_restart_owner == current)
1551                         return 0;
1552                 else
1553                         return -EBUSY;
1554         }
1555
1556         if (atomic_read(&priv->watchdog_event_pending))
1557                 return 0;
1558
1559         /*
1560          * The TX queues are stopped at this point, so this test
1561          * doesn't need to take ->tx_lock.
1562          */
1563         if (!priv->pending_tx_pkts)
1564                 return 0;
1565
1566         retry = 1;
1567         rc = 0;
1568
1569         spin_lock_bh(&priv->tx_lock);
1570         priv->tx_wait = &tx_wait;
1571         while (!rc) {
1572                 int oldcount;
1573                 unsigned long timeout;
1574
1575                 oldcount = priv->pending_tx_pkts;
1576
1577                 spin_unlock_bh(&priv->tx_lock);
1578                 timeout = wait_for_completion_timeout(&tx_wait,
1579                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1580
1581                 if (atomic_read(&priv->watchdog_event_pending)) {
1582                         spin_lock_bh(&priv->tx_lock);
1583                         priv->tx_wait = NULL;
1584                         spin_unlock_bh(&priv->tx_lock);
1585                         return 0;
1586                 }
1587
1588                 spin_lock_bh(&priv->tx_lock);
1589
1590                 if (timeout || !priv->pending_tx_pkts) {
1591                         WARN_ON(priv->pending_tx_pkts);
1592                         if (retry)
1593                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1594                         break;
1595                 }
1596
1597                 if (retry) {
1598                         mwl8k_tx_start(priv);
1599                         retry = 0;
1600                         continue;
1601                 }
1602
1603                 if (priv->pending_tx_pkts < oldcount) {
1604                         wiphy_notice(hw->wiphy,
1605                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1606                                      oldcount, priv->pending_tx_pkts);
1607                         retry = 1;
1608                         continue;
1609                 }
1610
1611                 priv->tx_wait = NULL;
1612
1613                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1614                           MWL8K_TX_WAIT_TIMEOUT_MS);
1615                 mwl8k_dump_tx_rings(hw);
1616                 priv->hw_restart_in_progress = true;
1617                 ieee80211_queue_work(hw, &priv->fw_reload);
1618
1619                 rc = -ETIMEDOUT;
1620         }
1621         priv->tx_wait = NULL;
1622         spin_unlock_bh(&priv->tx_lock);
1623
1624         return rc;
1625 }
1626
1627 #define MWL8K_TXD_SUCCESS(status)                               \
1628         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1629                      MWL8K_TXD_STATUS_OK_RETRY |                \
1630                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1631
1632 static int mwl8k_tid_queue_mapping(u8 tid)
1633 {
1634         BUG_ON(tid > 7);
1635
1636         switch (tid) {
1637         case 0:
1638         case 3:
1639                 return IEEE80211_AC_BE;
1640         case 1:
1641         case 2:
1642                 return IEEE80211_AC_BK;
1643         case 4:
1644         case 5:
1645                 return IEEE80211_AC_VI;
1646         case 6:
1647         case 7:
1648                 return IEEE80211_AC_VO;
1649         default:
1650                 return -1;
1651         }
1652 }
1653
1654 /* The firmware will fill in the rate information
1655  * for each packet that gets queued in the hardware
1656  * and these macros will interpret that info.
1657  */
1658
1659 #define RI_FORMAT(a)              (a & 0x0001)
1660 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1661
1662 static int
1663 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1664 {
1665         struct mwl8k_priv *priv = hw->priv;
1666         struct mwl8k_tx_queue *txq = priv->txq + index;
1667         int processed;
1668
1669         processed = 0;
1670         while (txq->len > 0 && limit--) {
1671                 int tx;
1672                 struct mwl8k_tx_desc *tx_desc;
1673                 unsigned long addr;
1674                 int size;
1675                 struct sk_buff *skb;
1676                 struct ieee80211_tx_info *info;
1677                 u32 status;
1678                 struct ieee80211_sta *sta;
1679                 struct mwl8k_sta *sta_info = NULL;
1680                 u16 rate_info;
1681                 struct ieee80211_hdr *wh;
1682
1683                 tx = txq->head;
1684                 tx_desc = txq->txd + tx;
1685
1686                 status = le32_to_cpu(tx_desc->status);
1687
1688                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1689                         if (!force)
1690                                 break;
1691                         tx_desc->status &=
1692                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1693                 }
1694
1695                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1696                 BUG_ON(txq->len == 0);
1697                 txq->len--;
1698                 priv->pending_tx_pkts--;
1699
1700                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1701                 size = le16_to_cpu(tx_desc->pkt_len);
1702                 skb = txq->skb[tx];
1703                 txq->skb[tx] = NULL;
1704
1705                 BUG_ON(skb == NULL);
1706                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1707
1708                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1709
1710                 wh = (struct ieee80211_hdr *) skb->data;
1711
1712                 /* Mark descriptor as unused */
1713                 tx_desc->pkt_phys_addr = 0;
1714                 tx_desc->pkt_len = 0;
1715
1716                 info = IEEE80211_SKB_CB(skb);
1717                 if (ieee80211_is_data(wh->frame_control)) {
1718                         rcu_read_lock();
1719                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1720                                                            wh->addr2);
1721                         if (sta) {
1722                                 sta_info = MWL8K_STA(sta);
1723                                 BUG_ON(sta_info == NULL);
1724                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1725                                 /* If rate is < 6.5 Mpbs for an ht station
1726                                  * do not form an ampdu. If the station is a
1727                                  * legacy station (format = 0), do not form an
1728                                  * ampdu
1729                                  */
1730                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1731                                     RI_FORMAT(rate_info) == 0) {
1732                                         sta_info->is_ampdu_allowed = false;
1733                                 } else {
1734                                         sta_info->is_ampdu_allowed = true;
1735                                 }
1736                         }
1737                         rcu_read_unlock();
1738                 }
1739
1740                 ieee80211_tx_info_clear_status(info);
1741
1742                 /* Rate control is happening in the firmware.
1743                  * Ensure no tx rate is being reported.
1744                  */
1745                 info->status.rates[0].idx = -1;
1746                 info->status.rates[0].count = 1;
1747
1748                 if (MWL8K_TXD_SUCCESS(status))
1749                         info->flags |= IEEE80211_TX_STAT_ACK;
1750
1751                 ieee80211_tx_status_irqsafe(hw, skb);
1752
1753                 processed++;
1754         }
1755
1756         return processed;
1757 }
1758
1759 /* must be called only when the card's transmit is completely halted */
1760 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1761 {
1762         struct mwl8k_priv *priv = hw->priv;
1763         struct mwl8k_tx_queue *txq = priv->txq + index;
1764
1765         if (txq->txd == NULL)
1766                 return;
1767
1768         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1769
1770         kfree(txq->skb);
1771         txq->skb = NULL;
1772
1773         pci_free_consistent(priv->pdev,
1774                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1775                             txq->txd, txq->txd_dma);
1776         txq->txd = NULL;
1777 }
1778
1779 /* caller must hold priv->stream_lock when calling the stream functions */
1780 static struct mwl8k_ampdu_stream *
1781 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1782 {
1783         struct mwl8k_ampdu_stream *stream;
1784         struct mwl8k_priv *priv = hw->priv;
1785         int i;
1786
1787         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1788                 stream = &priv->ampdu[i];
1789                 if (stream->state == AMPDU_NO_STREAM) {
1790                         stream->sta = sta;
1791                         stream->state = AMPDU_STREAM_NEW;
1792                         stream->tid = tid;
1793                         stream->idx = i;
1794                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1795                                     sta->addr, tid);
1796                         return stream;
1797                 }
1798         }
1799         return NULL;
1800 }
1801
1802 static int
1803 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1804 {
1805         int ret;
1806
1807         /* if the stream has already been started, don't start it again */
1808         if (stream->state != AMPDU_STREAM_NEW)
1809                 return 0;
1810         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1811         if (ret)
1812                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1813                             "%d\n", stream->sta->addr, stream->tid, ret);
1814         else
1815                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1816                             stream->sta->addr, stream->tid);
1817         return ret;
1818 }
1819
1820 static void
1821 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1822 {
1823         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1824                     stream->tid);
1825         memset(stream, 0, sizeof(*stream));
1826 }
1827
1828 static struct mwl8k_ampdu_stream *
1829 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1830 {
1831         struct mwl8k_priv *priv = hw->priv;
1832         int i;
1833
1834         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1835                 struct mwl8k_ampdu_stream *stream;
1836                 stream = &priv->ampdu[i];
1837                 if (stream->state == AMPDU_NO_STREAM)
1838                         continue;
1839                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1840                     stream->tid == tid)
1841                         return stream;
1842         }
1843         return NULL;
1844 }
1845
1846 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1847 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1848 {
1849         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1850         struct tx_traffic_info *tx_stats;
1851
1852         BUG_ON(tid >= MWL8K_MAX_TID);
1853         tx_stats = &sta_info->tx_stats[tid];
1854
1855         return sta_info->is_ampdu_allowed &&
1856                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1857 }
1858
1859 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1860 {
1861         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1862         struct tx_traffic_info *tx_stats;
1863
1864         BUG_ON(tid >= MWL8K_MAX_TID);
1865         tx_stats = &sta_info->tx_stats[tid];
1866
1867         if (tx_stats->start_time == 0)
1868                 tx_stats->start_time = jiffies;
1869
1870         /* reset the packet count after each second elapses.  If the number of
1871          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1872          * an ampdu stream to be started.
1873          */
1874         if (jiffies - tx_stats->start_time > HZ) {
1875                 tx_stats->pkts = 0;
1876                 tx_stats->start_time = 0;
1877         } else
1878                 tx_stats->pkts++;
1879 }
1880
1881 /* The hardware ampdu queues start from 5.
1882  * txpriorities for ampdu queues are
1883  * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1884  * and queue 3 is lowest (queue 4 is reserved)
1885  */
1886 #define BA_QUEUE                5
1887
1888 static void
1889 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1890                int index,
1891                struct ieee80211_sta *sta,
1892                struct sk_buff *skb)
1893 {
1894         struct mwl8k_priv *priv = hw->priv;
1895         struct ieee80211_tx_info *tx_info;
1896         struct mwl8k_vif *mwl8k_vif;
1897         struct ieee80211_hdr *wh;
1898         struct mwl8k_tx_queue *txq;
1899         struct mwl8k_tx_desc *tx;
1900         dma_addr_t dma;
1901         u32 txstatus;
1902         u8 txdatarate;
1903         u16 qos;
1904         int txpriority;
1905         u8 tid = 0;
1906         struct mwl8k_ampdu_stream *stream = NULL;
1907         bool start_ba_session = false;
1908         bool mgmtframe = false;
1909         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1910         bool eapol_frame = false;
1911
1912         wh = (struct ieee80211_hdr *)skb->data;
1913         if (ieee80211_is_data_qos(wh->frame_control))
1914                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1915         else
1916                 qos = 0;
1917
1918         if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1919                 eapol_frame = true;
1920
1921         if (ieee80211_is_mgmt(wh->frame_control))
1922                 mgmtframe = true;
1923
1924         if (priv->ap_fw)
1925                 mwl8k_encapsulate_tx_frame(priv, skb);
1926         else
1927                 mwl8k_add_dma_header(priv, skb, 0, 0);
1928
1929         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1930
1931         tx_info = IEEE80211_SKB_CB(skb);
1932         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1933
1934         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1935                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1936                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1937                 mwl8k_vif->seqno += 0x10;
1938         }
1939
1940         /* Setup firmware control bit fields for each frame type.  */
1941         txstatus = 0;
1942         txdatarate = 0;
1943         if (ieee80211_is_mgmt(wh->frame_control) ||
1944             ieee80211_is_ctl(wh->frame_control)) {
1945                 txdatarate = 0;
1946                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1947         } else if (ieee80211_is_data(wh->frame_control)) {
1948                 txdatarate = 1;
1949                 if (is_multicast_ether_addr(wh->addr1))
1950                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1951
1952                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1953                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1954                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1955                 else
1956                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1957         }
1958
1959         /* Queue ADDBA request in the respective data queue.  While setting up
1960          * the ampdu stream, mac80211 queues further packets for that
1961          * particular ra/tid pair.  However, packets piled up in the hardware
1962          * for that ra/tid pair will still go out. ADDBA request and the
1963          * related data packets going out from different queues asynchronously
1964          * will cause a shift in the receiver window which might result in
1965          * ampdu packets getting dropped at the receiver after the stream has
1966          * been setup.
1967          */
1968         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1969             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1970             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1971             priv->ap_fw)) {
1972                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1973                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1974                 index = mwl8k_tid_queue_mapping(tid);
1975         }
1976
1977         txpriority = index;
1978
1979         if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1980             ieee80211_is_data_qos(wh->frame_control)) {
1981                 tid = qos & 0xf;
1982                 mwl8k_tx_count_packet(sta, tid);
1983                 spin_lock(&priv->stream_lock);
1984                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1985                 if (stream != NULL) {
1986                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1987                                 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1988                                 txpriority = (BA_QUEUE + stream->idx) %
1989                                              TOTAL_HW_TX_QUEUES;
1990                                 if (stream->idx <= 1)
1991                                         index = stream->idx +
1992                                                 MWL8K_TX_WMM_QUEUES;
1993
1994                         } else if (stream->state == AMPDU_STREAM_NEW) {
1995                                 /* We get here if the driver sends us packets
1996                                  * after we've initiated a stream, but before
1997                                  * our ampdu_action routine has been called
1998                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1999                                  * for the ADDBA request.  So this packet can
2000                                  * go out with no risk of sequence number
2001                                  * mismatch.  No special handling is required.
2002                                  */
2003                         } else {
2004                                 /* Drop packets that would go out after the
2005                                  * ADDBA request was sent but before the ADDBA
2006                                  * response is received.  If we don't do this,
2007                                  * the recipient would probably receive it
2008                                  * after the ADDBA request with SSN 0.  This
2009                                  * will cause the recipient's BA receive window
2010                                  * to shift, which would cause the subsequent
2011                                  * packets in the BA stream to be discarded.
2012                                  * mac80211 queues our packets for us in this
2013                                  * case, so this is really just a safety check.
2014                                  */
2015                                 wiphy_warn(hw->wiphy,
2016                                            "Cannot send packet while ADDBA "
2017                                            "dialog is underway.\n");
2018                                 spin_unlock(&priv->stream_lock);
2019                                 dev_kfree_skb(skb);
2020                                 return;
2021                         }
2022                 } else {
2023                         /* Defer calling mwl8k_start_stream so that the current
2024                          * skb can go out before the ADDBA request.  This
2025                          * prevents sequence number mismatch at the recepient
2026                          * as described above.
2027                          */
2028                         if (mwl8k_ampdu_allowed(sta, tid)) {
2029                                 stream = mwl8k_add_stream(hw, sta, tid);
2030                                 if (stream != NULL)
2031                                         start_ba_session = true;
2032                         }
2033                 }
2034                 spin_unlock(&priv->stream_lock);
2035         } else {
2036                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2037                 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2038         }
2039
2040         dma = pci_map_single(priv->pdev, skb->data,
2041                                 skb->len, PCI_DMA_TODEVICE);
2042
2043         if (pci_dma_mapping_error(priv->pdev, dma)) {
2044                 wiphy_debug(hw->wiphy,
2045                             "failed to dma map skb, dropping TX frame.\n");
2046                 if (start_ba_session) {
2047                         spin_lock(&priv->stream_lock);
2048                         mwl8k_remove_stream(hw, stream);
2049                         spin_unlock(&priv->stream_lock);
2050                 }
2051                 dev_kfree_skb(skb);
2052                 return;
2053         }
2054
2055         spin_lock_bh(&priv->tx_lock);
2056
2057         txq = priv->txq + index;
2058
2059         /* Mgmt frames that go out frequently are probe
2060          * responses. Other mgmt frames got out relatively
2061          * infrequently. Hence reserve 2 buffers so that
2062          * other mgmt frames do not get dropped due to an
2063          * already queued probe response in one of the
2064          * reserved buffers.
2065          */
2066
2067         if (txq->len >= MWL8K_TX_DESCS - 2) {
2068                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2069                         if (start_ba_session) {
2070                                 spin_lock(&priv->stream_lock);
2071                                 mwl8k_remove_stream(hw, stream);
2072                                 spin_unlock(&priv->stream_lock);
2073                         }
2074                         mwl8k_tx_start(priv);
2075                         spin_unlock_bh(&priv->tx_lock);
2076                         pci_unmap_single(priv->pdev, dma, skb->len,
2077                                          PCI_DMA_TODEVICE);
2078                         dev_kfree_skb(skb);
2079                         return;
2080                 }
2081         }
2082
2083         BUG_ON(txq->skb[txq->tail] != NULL);
2084         txq->skb[txq->tail] = skb;
2085
2086         tx = txq->txd + txq->tail;
2087         tx->data_rate = txdatarate;
2088         tx->tx_priority = txpriority;
2089         tx->qos_control = cpu_to_le16(qos);
2090         tx->pkt_phys_addr = cpu_to_le32(dma);
2091         tx->pkt_len = cpu_to_le16(skb->len);
2092         tx->rate_info = 0;
2093         if (!priv->ap_fw && sta != NULL)
2094                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2095         else
2096                 tx->peer_id = 0;
2097
2098         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2099                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2100                                                 MWL8K_HW_TIMER_REGISTER));
2101         else
2102                 tx->timestamp = 0;
2103
2104         wmb();
2105         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2106
2107         txq->len++;
2108         priv->pending_tx_pkts++;
2109
2110         txq->tail++;
2111         if (txq->tail == MWL8K_TX_DESCS)
2112                 txq->tail = 0;
2113
2114         mwl8k_tx_start(priv);
2115
2116         spin_unlock_bh(&priv->tx_lock);
2117
2118         /* Initiate the ampdu session here */
2119         if (start_ba_session) {
2120                 spin_lock(&priv->stream_lock);
2121                 if (mwl8k_start_stream(hw, stream))
2122                         mwl8k_remove_stream(hw, stream);
2123                 spin_unlock(&priv->stream_lock);
2124         }
2125 }
2126
2127
2128 /*
2129  * Firmware access.
2130  *
2131  * We have the following requirements for issuing firmware commands:
2132  * - Some commands require that the packet transmit path is idle when
2133  *   the command is issued.  (For simplicity, we'll just quiesce the
2134  *   transmit path for every command.)
2135  * - There are certain sequences of commands that need to be issued to
2136  *   the hardware sequentially, with no other intervening commands.
2137  *
2138  * This leads to an implementation of a "firmware lock" as a mutex that
2139  * can be taken recursively, and which is taken by both the low-level
2140  * command submission function (mwl8k_post_cmd) as well as any users of
2141  * that function that require issuing of an atomic sequence of commands,
2142  * and quiesces the transmit path whenever it's taken.
2143  */
2144 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2145 {
2146         struct mwl8k_priv *priv = hw->priv;
2147
2148         if (priv->fw_mutex_owner != current) {
2149                 int rc;
2150
2151                 mutex_lock(&priv->fw_mutex);
2152                 ieee80211_stop_queues(hw);
2153
2154                 rc = mwl8k_tx_wait_empty(hw);
2155                 if (rc) {
2156                         if (!priv->hw_restart_in_progress)
2157                                 ieee80211_wake_queues(hw);
2158
2159                         mutex_unlock(&priv->fw_mutex);
2160
2161                         return rc;
2162                 }
2163
2164                 priv->fw_mutex_owner = current;
2165         }
2166
2167         priv->fw_mutex_depth++;
2168
2169         return 0;
2170 }
2171
2172 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2173 {
2174         struct mwl8k_priv *priv = hw->priv;
2175
2176         if (!--priv->fw_mutex_depth) {
2177                 if (!priv->hw_restart_in_progress)
2178                         ieee80211_wake_queues(hw);
2179
2180                 priv->fw_mutex_owner = NULL;
2181                 mutex_unlock(&priv->fw_mutex);
2182         }
2183 }
2184
2185 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2186                                u32 bitmap);
2187
2188 /*
2189  * Command processing.
2190  */
2191
2192 /* Timeout firmware commands after 10s */
2193 #define MWL8K_CMD_TIMEOUT_MS    10000
2194
2195 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2196 {
2197         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2198         struct mwl8k_priv *priv = hw->priv;
2199         void __iomem *regs = priv->regs;
2200         dma_addr_t dma_addr;
2201         unsigned int dma_size;
2202         int rc;
2203         unsigned long timeout = 0;
2204         u8 buf[32];
2205         u32 bitmap = 0;
2206
2207         wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2208                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2209
2210         /* Before posting firmware commands that could change the hardware
2211          * characteristics, make sure that all BSSes are stopped temporary.
2212          * Enable these stopped BSSes after completion of the commands
2213          */
2214
2215         rc = mwl8k_fw_lock(hw);
2216         if (rc)
2217                 return rc;
2218
2219         if (priv->ap_fw && priv->running_bsses) {
2220                 switch (le16_to_cpu(cmd->code)) {
2221                 case MWL8K_CMD_SET_RF_CHANNEL:
2222                 case MWL8K_CMD_RADIO_CONTROL:
2223                 case MWL8K_CMD_RF_TX_POWER:
2224                 case MWL8K_CMD_TX_POWER:
2225                 case MWL8K_CMD_RF_ANTENNA:
2226                 case MWL8K_CMD_RTS_THRESHOLD:
2227                 case MWL8K_CMD_MIMO_CONFIG:
2228                         bitmap = priv->running_bsses;
2229                         mwl8k_enable_bsses(hw, false, bitmap);
2230                         break;
2231                 }
2232         }
2233
2234         cmd->result = (__force __le16) 0xffff;
2235         dma_size = le16_to_cpu(cmd->length);
2236         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2237                                   PCI_DMA_BIDIRECTIONAL);
2238         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2239                 return -ENOMEM;
2240
2241         priv->hostcmd_wait = &cmd_wait;
2242         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2243         iowrite32(MWL8K_H2A_INT_DOORBELL,
2244                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2245         iowrite32(MWL8K_H2A_INT_DUMMY,
2246                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2247
2248         timeout = wait_for_completion_timeout(&cmd_wait,
2249                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2250
2251         priv->hostcmd_wait = NULL;
2252
2253
2254         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2255                                         PCI_DMA_BIDIRECTIONAL);
2256
2257         if (!timeout) {
2258                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2259                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2260                           MWL8K_CMD_TIMEOUT_MS);
2261                 rc = -ETIMEDOUT;
2262         } else {
2263                 int ms;
2264
2265                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2266
2267                 rc = cmd->result ? -EINVAL : 0;
2268                 if (rc)
2269                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2270                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2271                                   le16_to_cpu(cmd->result));
2272                 else if (ms > 2000)
2273                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2274                                      mwl8k_cmd_name(cmd->code,
2275                                                     buf, sizeof(buf)),
2276                                      ms);
2277         }
2278
2279         if (bitmap)
2280                 mwl8k_enable_bsses(hw, true, bitmap);
2281
2282         mwl8k_fw_unlock(hw);
2283
2284         return rc;
2285 }
2286
2287 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2288                                  struct ieee80211_vif *vif,
2289                                  struct mwl8k_cmd_pkt *cmd)
2290 {
2291         if (vif != NULL)
2292                 cmd->macid = MWL8K_VIF(vif)->macid;
2293         return mwl8k_post_cmd(hw, cmd);
2294 }
2295
2296 /*
2297  * Setup code shared between STA and AP firmware images.
2298  */
2299 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2300 {
2301         struct mwl8k_priv *priv = hw->priv;
2302
2303         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2304         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2305
2306         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2307         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2308
2309         priv->band_24.band = NL80211_BAND_2GHZ;
2310         priv->band_24.channels = priv->channels_24;
2311         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2312         priv->band_24.bitrates = priv->rates_24;
2313         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2314
2315         hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24;
2316 }
2317
2318 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2319 {
2320         struct mwl8k_priv *priv = hw->priv;
2321
2322         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2323         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2324
2325         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2326         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2327
2328         priv->band_50.band = NL80211_BAND_5GHZ;
2329         priv->band_50.channels = priv->channels_50;
2330         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2331         priv->band_50.bitrates = priv->rates_50;
2332         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2333
2334         hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50;
2335 }
2336
2337 /*
2338  * CMD_GET_HW_SPEC (STA version).
2339  */
2340 struct mwl8k_cmd_get_hw_spec_sta {
2341         struct mwl8k_cmd_pkt header;
2342         __u8 hw_rev;
2343         __u8 host_interface;
2344         __le16 num_mcaddrs;
2345         __u8 perm_addr[ETH_ALEN];
2346         __le16 region_code;
2347         __le32 fw_rev;
2348         __le32 ps_cookie;
2349         __le32 caps;
2350         __u8 mcs_bitmap[16];
2351         __le32 rx_queue_ptr;
2352         __le32 num_tx_queues;
2353         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2354         __le32 caps2;
2355         __le32 num_tx_desc_per_queue;
2356         __le32 total_rxd;
2357 } __packed;
2358
2359 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2360 #define MWL8K_CAP_GREENFIELD            0x08000000
2361 #define MWL8K_CAP_AMPDU                 0x04000000
2362 #define MWL8K_CAP_RX_STBC               0x01000000
2363 #define MWL8K_CAP_TX_STBC               0x00800000
2364 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2365 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2366 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2367 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2368 #define MWL8K_CAP_DELAY_BA              0x00003000
2369 #define MWL8K_CAP_MIMO                  0x00000200
2370 #define MWL8K_CAP_40MHZ                 0x00000100
2371 #define MWL8K_CAP_BAND_MASK             0x00000007
2372 #define MWL8K_CAP_5GHZ                  0x00000004
2373 #define MWL8K_CAP_2GHZ4                 0x00000001
2374
2375 static void
2376 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2377                   struct ieee80211_supported_band *band, u32 cap)
2378 {
2379         int rx_streams;
2380         int tx_streams;
2381
2382         band->ht_cap.ht_supported = 1;
2383
2384         if (cap & MWL8K_CAP_MAX_AMSDU)
2385                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2386         if (cap & MWL8K_CAP_GREENFIELD)
2387                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2388         if (cap & MWL8K_CAP_AMPDU) {
2389                 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2390                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2391                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2392         }
2393         if (cap & MWL8K_CAP_RX_STBC)
2394                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2395         if (cap & MWL8K_CAP_TX_STBC)
2396                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2397         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2398                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2399         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2400                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2401         if (cap & MWL8K_CAP_DELAY_BA)
2402                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2403         if (cap & MWL8K_CAP_40MHZ)
2404                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2405
2406         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2407         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2408
2409         band->ht_cap.mcs.rx_mask[0] = 0xff;
2410         if (rx_streams >= 2)
2411                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2412         if (rx_streams >= 3)
2413                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2414         band->ht_cap.mcs.rx_mask[4] = 0x01;
2415         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2416
2417         if (rx_streams != tx_streams) {
2418                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2419                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2420                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2421         }
2422 }
2423
2424 static void
2425 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2426 {
2427         struct mwl8k_priv *priv = hw->priv;
2428
2429         if (priv->caps)
2430                 return;
2431
2432         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2433                 mwl8k_setup_2ghz_band(hw);
2434                 if (caps & MWL8K_CAP_MIMO)
2435                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2436         }
2437
2438         if (caps & MWL8K_CAP_5GHZ) {
2439                 mwl8k_setup_5ghz_band(hw);
2440                 if (caps & MWL8K_CAP_MIMO)
2441                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2442         }
2443
2444         priv->caps = caps;
2445 }
2446
2447 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2448 {
2449         struct mwl8k_priv *priv = hw->priv;
2450         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2451         int rc;
2452         int i;
2453
2454         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2455         if (cmd == NULL)
2456                 return -ENOMEM;
2457
2458         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2459         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2460
2461         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2462         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2463         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2464         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2465         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2466                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2467         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2468         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2469
2470         rc = mwl8k_post_cmd(hw, &cmd->header);
2471
2472         if (!rc) {
2473                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2474                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2475                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2476                 priv->hw_rev = cmd->hw_rev;
2477                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2478                 priv->ap_macids_supported = 0x00000000;
2479                 priv->sta_macids_supported = 0x00000001;
2480         }
2481
2482         kfree(cmd);
2483         return rc;
2484 }
2485
2486 /*
2487  * CMD_GET_HW_SPEC (AP version).
2488  */
2489 struct mwl8k_cmd_get_hw_spec_ap {
2490         struct mwl8k_cmd_pkt header;
2491         __u8 hw_rev;
2492         __u8 host_interface;
2493         __le16 num_wcb;
2494         __le16 num_mcaddrs;
2495         __u8 perm_addr[ETH_ALEN];
2496         __le16 region_code;
2497         __le16 num_antenna;
2498         __le32 fw_rev;
2499         __le32 wcbbase0;
2500         __le32 rxwrptr;
2501         __le32 rxrdptr;
2502         __le32 ps_cookie;
2503         __le32 wcbbase1;
2504         __le32 wcbbase2;
2505         __le32 wcbbase3;
2506         __le32 fw_api_version;
2507         __le32 caps;
2508         __le32 num_of_ampdu_queues;
2509         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2510 } __packed;
2511
2512 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2513 {
2514         struct mwl8k_priv *priv = hw->priv;
2515         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2516         int rc, i;
2517         u32 api_version;
2518
2519         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2520         if (cmd == NULL)
2521                 return -ENOMEM;
2522
2523         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2524         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2525
2526         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2527         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2528
2529         rc = mwl8k_post_cmd(hw, &cmd->header);
2530
2531         if (!rc) {
2532                 int off;
2533
2534                 api_version = le32_to_cpu(cmd->fw_api_version);
2535                 if (priv->device_info->fw_api_ap != api_version) {
2536                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2537                                "  Expected %d got %d.\n", MWL8K_NAME,
2538                                priv->device_info->part_name,
2539                                priv->device_info->fw_api_ap,
2540                                api_version);
2541                         rc = -EINVAL;
2542                         goto done;
2543                 }
2544                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2545                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2546                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2547                 priv->hw_rev = cmd->hw_rev;
2548                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2549                 priv->ap_macids_supported = 0x000000ff;
2550                 priv->sta_macids_supported = 0x00000100;
2551                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2552                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2553                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2554                                    " but we only support %d.\n",
2555                                    priv->num_ampdu_queues,
2556                                    MWL8K_MAX_AMPDU_QUEUES);
2557                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2558                 }
2559                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2560                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2561
2562                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2563                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2564
2565                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2566                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2567                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2568                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2569
2570                 for (i = 0; i < priv->num_ampdu_queues; i++)
2571                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2572                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2573         }
2574
2575 done:
2576         kfree(cmd);
2577         return rc;
2578 }
2579
2580 /*
2581  * CMD_SET_HW_SPEC.
2582  */
2583 struct mwl8k_cmd_set_hw_spec {
2584         struct mwl8k_cmd_pkt header;
2585         __u8 hw_rev;
2586         __u8 host_interface;
2587         __le16 num_mcaddrs;
2588         __u8 perm_addr[ETH_ALEN];
2589         __le16 region_code;
2590         __le32 fw_rev;
2591         __le32 ps_cookie;
2592         __le32 caps;
2593         __le32 rx_queue_ptr;
2594         __le32 num_tx_queues;
2595         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2596         __le32 flags;
2597         __le32 num_tx_desc_per_queue;
2598         __le32 total_rxd;
2599 } __packed;
2600
2601 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2602  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2603  * the packets that are queued for more than 500ms, will be dropped in the
2604  * hardware. This helps minimizing the issues caused due to head-of-line
2605  * blocking where a slow client can hog the bandwidth and affect traffic to a
2606  * faster client.
2607  */
2608 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2609 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2610 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2611 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2612 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2613
2614 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2615 {
2616         struct mwl8k_priv *priv = hw->priv;
2617         struct mwl8k_cmd_set_hw_spec *cmd;
2618         int rc;
2619         int i;
2620
2621         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2622         if (cmd == NULL)
2623                 return -ENOMEM;
2624
2625         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2626         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2627
2628         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2629         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2630         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2631
2632         /*
2633          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2634          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2635          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2636          * priority is interpreted the right way in firmware.
2637          */
2638         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2639                 int j = mwl8k_tx_queues(priv) - 1 - i;
2640                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2641         }
2642
2643         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2644                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2645                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2646                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2647                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2648         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2649         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2650
2651         rc = mwl8k_post_cmd(hw, &cmd->header);
2652         kfree(cmd);
2653
2654         return rc;
2655 }
2656
2657 /*
2658  * CMD_MAC_MULTICAST_ADR.
2659  */
2660 struct mwl8k_cmd_mac_multicast_adr {
2661         struct mwl8k_cmd_pkt header;
2662         __le16 action;
2663         __le16 numaddr;
2664         __u8 addr[0][ETH_ALEN];
2665 };
2666
2667 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2668 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2669 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2670 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2671
2672 static struct mwl8k_cmd_pkt *
2673 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2674                               struct netdev_hw_addr_list *mc_list)
2675 {
2676         struct mwl8k_priv *priv = hw->priv;
2677         struct mwl8k_cmd_mac_multicast_adr *cmd;
2678         int size;
2679         int mc_count = 0;
2680
2681         if (mc_list)
2682                 mc_count = netdev_hw_addr_list_count(mc_list);
2683
2684         if (allmulti || mc_count > priv->num_mcaddrs) {
2685                 allmulti = 1;
2686                 mc_count = 0;
2687         }
2688
2689         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2690
2691         cmd = kzalloc(size, GFP_ATOMIC);
2692         if (cmd == NULL)
2693                 return NULL;
2694
2695         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2696         cmd->header.length = cpu_to_le16(size);
2697         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2698                                   MWL8K_ENABLE_RX_BROADCAST);
2699
2700         if (allmulti) {
2701                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2702         } else if (mc_count) {
2703                 struct netdev_hw_addr *ha;
2704                 int i = 0;
2705
2706                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2707                 cmd->numaddr = cpu_to_le16(mc_count);
2708                 netdev_hw_addr_list_for_each(ha, mc_list) {
2709                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2710                 }
2711         }
2712
2713         return &cmd->header;
2714 }
2715
2716 /*
2717  * CMD_GET_STAT.
2718  */
2719 struct mwl8k_cmd_get_stat {
2720         struct mwl8k_cmd_pkt header;
2721         __le32 stats[64];
2722 } __packed;
2723
2724 #define MWL8K_STAT_ACK_FAILURE  9
2725 #define MWL8K_STAT_RTS_FAILURE  12
2726 #define MWL8K_STAT_FCS_ERROR    24
2727 #define MWL8K_STAT_RTS_SUCCESS  11
2728
2729 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2730                               struct ieee80211_low_level_stats *stats)
2731 {
2732         struct mwl8k_cmd_get_stat *cmd;
2733         int rc;
2734
2735         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2736         if (cmd == NULL)
2737                 return -ENOMEM;
2738
2739         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2740         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2741
2742         rc = mwl8k_post_cmd(hw, &cmd->header);
2743         if (!rc) {
2744                 stats->dot11ACKFailureCount =
2745                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2746                 stats->dot11RTSFailureCount =
2747                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2748                 stats->dot11FCSErrorCount =
2749                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2750                 stats->dot11RTSSuccessCount =
2751                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2752         }
2753         kfree(cmd);
2754
2755         return rc;
2756 }
2757
2758 /*
2759  * CMD_RADIO_CONTROL.
2760  */
2761 struct mwl8k_cmd_radio_control {
2762         struct mwl8k_cmd_pkt header;
2763         __le16 action;
2764         __le16 control;
2765         __le16 radio_on;
2766 } __packed;
2767
2768 static int
2769 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2770 {
2771         struct mwl8k_priv *priv = hw->priv;
2772         struct mwl8k_cmd_radio_control *cmd;
2773         int rc;
2774
2775         if (enable == priv->radio_on && !force)
2776                 return 0;
2777
2778         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2779         if (cmd == NULL)
2780                 return -ENOMEM;
2781
2782         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2783         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2784         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2785         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2786         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2787
2788         rc = mwl8k_post_cmd(hw, &cmd->header);
2789         kfree(cmd);
2790
2791         if (!rc)
2792                 priv->radio_on = enable;
2793
2794         return rc;
2795 }
2796
2797 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2798 {
2799         return mwl8k_cmd_radio_control(hw, 0, 0);
2800 }
2801
2802 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2803 {
2804         return mwl8k_cmd_radio_control(hw, 1, 0);
2805 }
2806
2807 static int
2808 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2809 {
2810         struct mwl8k_priv *priv = hw->priv;
2811
2812         priv->radio_short_preamble = short_preamble;
2813
2814         return mwl8k_cmd_radio_control(hw, 1, 1);
2815 }
2816
2817 /*
2818  * CMD_RF_TX_POWER.
2819  */
2820 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2821
2822 struct mwl8k_cmd_rf_tx_power {
2823         struct mwl8k_cmd_pkt header;
2824         __le16 action;
2825         __le16 support_level;
2826         __le16 current_level;
2827         __le16 reserved;
2828         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2829 } __packed;
2830
2831 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2832 {
2833         struct mwl8k_cmd_rf_tx_power *cmd;
2834         int rc;
2835
2836         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2837         if (cmd == NULL)
2838                 return -ENOMEM;
2839
2840         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2841         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2842         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2843         cmd->support_level = cpu_to_le16(dBm);
2844
2845         rc = mwl8k_post_cmd(hw, &cmd->header);
2846         kfree(cmd);
2847
2848         return rc;
2849 }
2850
2851 /*
2852  * CMD_TX_POWER.
2853  */
2854 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2855
2856 struct mwl8k_cmd_tx_power {
2857         struct mwl8k_cmd_pkt header;
2858         __le16 action;
2859         __le16 band;
2860         __le16 channel;
2861         __le16 bw;
2862         __le16 sub_ch;
2863         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2864 } __packed;
2865
2866 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2867                                      struct ieee80211_conf *conf,
2868                                      unsigned short pwr)
2869 {
2870         struct ieee80211_channel *channel = conf->chandef.chan;
2871         enum nl80211_channel_type channel_type =
2872                 cfg80211_get_chandef_type(&conf->chandef);
2873         struct mwl8k_cmd_tx_power *cmd;
2874         int rc;
2875         int i;
2876
2877         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2878         if (cmd == NULL)
2879                 return -ENOMEM;
2880
2881         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2882         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2883         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2884
2885         if (channel->band == NL80211_BAND_2GHZ)
2886                 cmd->band = cpu_to_le16(0x1);
2887         else if (channel->band == NL80211_BAND_5GHZ)
2888                 cmd->band = cpu_to_le16(0x4);
2889
2890         cmd->channel = cpu_to_le16(channel->hw_value);
2891
2892         if (channel_type == NL80211_CHAN_NO_HT ||
2893             channel_type == NL80211_CHAN_HT20) {
2894                 cmd->bw = cpu_to_le16(0x2);
2895         } else {
2896                 cmd->bw = cpu_to_le16(0x4);
2897                 if (channel_type == NL80211_CHAN_HT40MINUS)
2898                         cmd->sub_ch = cpu_to_le16(0x3);
2899                 else if (channel_type == NL80211_CHAN_HT40PLUS)
2900                         cmd->sub_ch = cpu_to_le16(0x1);
2901         }
2902
2903         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2904                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2905
2906         rc = mwl8k_post_cmd(hw, &cmd->header);
2907         kfree(cmd);
2908
2909         return rc;
2910 }
2911
2912 /*
2913  * CMD_RF_ANTENNA.
2914  */
2915 struct mwl8k_cmd_rf_antenna {
2916         struct mwl8k_cmd_pkt header;
2917         __le16 antenna;
2918         __le16 mode;
2919 } __packed;
2920
2921 #define MWL8K_RF_ANTENNA_RX             1
2922 #define MWL8K_RF_ANTENNA_TX             2
2923
2924 static int
2925 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2926 {
2927         struct mwl8k_cmd_rf_antenna *cmd;
2928         int rc;
2929
2930         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2931         if (cmd == NULL)
2932                 return -ENOMEM;
2933
2934         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2935         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2936         cmd->antenna = cpu_to_le16(antenna);
2937         cmd->mode = cpu_to_le16(mask);
2938
2939         rc = mwl8k_post_cmd(hw, &cmd->header);
2940         kfree(cmd);
2941
2942         return rc;
2943 }
2944
2945 /*
2946  * CMD_SET_BEACON.
2947  */
2948 struct mwl8k_cmd_set_beacon {
2949         struct mwl8k_cmd_pkt header;
2950         __le16 beacon_len;
2951         __u8 beacon[0];
2952 };
2953
2954 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2955                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2956 {
2957         struct mwl8k_cmd_set_beacon *cmd;
2958         int rc;
2959
2960         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2961         if (cmd == NULL)
2962                 return -ENOMEM;
2963
2964         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2965         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2966         cmd->beacon_len = cpu_to_le16(len);
2967         memcpy(cmd->beacon, beacon, len);
2968
2969         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2970         kfree(cmd);
2971
2972         return rc;
2973 }
2974
2975 /*
2976  * CMD_SET_PRE_SCAN.
2977  */
2978 struct mwl8k_cmd_set_pre_scan {
2979         struct mwl8k_cmd_pkt header;
2980 } __packed;
2981
2982 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2983 {
2984         struct mwl8k_cmd_set_pre_scan *cmd;
2985         int rc;
2986
2987         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2988         if (cmd == NULL)
2989                 return -ENOMEM;
2990
2991         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2992         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2993
2994         rc = mwl8k_post_cmd(hw, &cmd->header);
2995         kfree(cmd);
2996
2997         return rc;
2998 }
2999
3000 /*
3001  * CMD_BBP_REG_ACCESS.
3002  */
3003 struct mwl8k_cmd_bbp_reg_access {
3004         struct mwl8k_cmd_pkt header;
3005         __le16 action;
3006         __le16 offset;
3007         u8 value;
3008         u8 rsrv[3];
3009 } __packed;
3010
3011 static int
3012 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3013                          u16 action,
3014                          u16 offset,
3015                          u8 *value)
3016 {
3017         struct mwl8k_cmd_bbp_reg_access *cmd;
3018         int rc;
3019
3020         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3021         if (cmd == NULL)
3022                 return -ENOMEM;
3023
3024         cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3025         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3026         cmd->action = cpu_to_le16(action);
3027         cmd->offset = cpu_to_le16(offset);
3028
3029         rc = mwl8k_post_cmd(hw, &cmd->header);
3030
3031         if (!rc)
3032                 *value = cmd->value;
3033         else
3034                 *value = 0;
3035
3036         kfree(cmd);
3037
3038         return rc;
3039 }
3040
3041 /*
3042  * CMD_SET_POST_SCAN.
3043  */
3044 struct mwl8k_cmd_set_post_scan {
3045         struct mwl8k_cmd_pkt header;
3046         __le32 isibss;
3047         __u8 bssid[ETH_ALEN];
3048 } __packed;
3049
3050 static int
3051 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3052 {
3053         struct mwl8k_cmd_set_post_scan *cmd;
3054         int rc;
3055
3056         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3057         if (cmd == NULL)
3058                 return -ENOMEM;
3059
3060         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3061         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3062         cmd->isibss = 0;
3063         memcpy(cmd->bssid, mac, ETH_ALEN);
3064
3065         rc = mwl8k_post_cmd(hw, &cmd->header);
3066         kfree(cmd);
3067
3068         return rc;
3069 }
3070
3071 static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3072 {
3073         struct ieee80211_supported_band *sband;
3074         int band, ch, idx = 0;
3075
3076         for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3077                 sband = priv->hw->wiphy->bands[band];
3078                 if (!sband)
3079                         continue;
3080
3081                 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3082                         if (sband->channels[ch].center_freq == freq)
3083                                 goto exit;
3084         }
3085
3086 exit:
3087         return idx;
3088 }
3089
3090 static void mwl8k_update_survey(struct mwl8k_priv *priv,
3091                                 struct ieee80211_channel *channel)
3092 {
3093         u32 cca_cnt, rx_rdy;
3094         s8 nf = 0, idx;
3095         struct survey_info *survey;
3096
3097         idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3098         if (idx >= MWL8K_NUM_CHANS) {
3099                 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3100                 return;
3101         }
3102
3103         survey = &priv->survey[idx];
3104
3105         cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3106         cca_cnt /= 1000; /* uSecs to mSecs */
3107         survey->time_busy = (u64) cca_cnt;
3108
3109         rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3110         rx_rdy /= 1000; /* uSecs to mSecs */
3111         survey->time_rx = (u64) rx_rdy;
3112
3113         priv->channel_time = jiffies - priv->channel_time;
3114         survey->time = jiffies_to_msecs(priv->channel_time);
3115
3116         survey->channel = channel;
3117
3118         mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3119
3120         /* Make sure sign is negative else ACS  at hostapd fails */
3121         survey->noise = nf * -1;
3122
3123         survey->filled = SURVEY_INFO_NOISE_DBM |
3124                          SURVEY_INFO_TIME |
3125                          SURVEY_INFO_TIME_BUSY |
3126                          SURVEY_INFO_TIME_RX;
3127 }
3128
3129 /*
3130  * CMD_SET_RF_CHANNEL.
3131  */
3132 struct mwl8k_cmd_set_rf_channel {
3133         struct mwl8k_cmd_pkt header;
3134         __le16 action;
3135         __u8 current_channel;
3136         __le32 channel_flags;
3137 } __packed;
3138
3139 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3140                                     struct ieee80211_conf *conf)
3141 {
3142         struct ieee80211_channel *channel = conf->chandef.chan;
3143         enum nl80211_channel_type channel_type =
3144                 cfg80211_get_chandef_type(&conf->chandef);
3145         struct mwl8k_cmd_set_rf_channel *cmd;
3146         struct mwl8k_priv *priv = hw->priv;
3147         int rc;
3148
3149         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3150         if (cmd == NULL)
3151                 return -ENOMEM;
3152
3153         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3154         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3155         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3156         cmd->current_channel = channel->hw_value;
3157
3158         if (channel->band == NL80211_BAND_2GHZ)
3159                 cmd->channel_flags |= cpu_to_le32(0x00000001);
3160         else if (channel->band == NL80211_BAND_5GHZ)
3161                 cmd->channel_flags |= cpu_to_le32(0x00000004);
3162
3163         if (!priv->sw_scan_start) {
3164                 if (channel_type == NL80211_CHAN_NO_HT ||
3165                     channel_type == NL80211_CHAN_HT20)
3166                         cmd->channel_flags |= cpu_to_le32(0x00000080);
3167                 else if (channel_type == NL80211_CHAN_HT40MINUS)
3168                         cmd->channel_flags |= cpu_to_le32(0x000001900);
3169                 else if (channel_type == NL80211_CHAN_HT40PLUS)
3170                         cmd->channel_flags |= cpu_to_le32(0x000000900);
3171         } else {
3172                 cmd->channel_flags |= cpu_to_le32(0x00000080);
3173         }
3174
3175         if (priv->sw_scan_start) {
3176                 /* Store current channel stats
3177                  * before switching to newer one.
3178                  * This will be processed only for AP fw.
3179                  */
3180                 if (priv->channel_time != 0)
3181                         mwl8k_update_survey(priv, priv->acs_chan);
3182
3183                 priv->channel_time = jiffies;
3184                 priv->acs_chan =  channel;
3185         }
3186
3187         rc = mwl8k_post_cmd(hw, &cmd->header);
3188         kfree(cmd);
3189
3190         return rc;
3191 }
3192
3193 /*
3194  * CMD_SET_AID.
3195  */
3196 #define MWL8K_FRAME_PROT_DISABLED                       0x00
3197 #define MWL8K_FRAME_PROT_11G                            0x07
3198 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
3199 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
3200
3201 struct mwl8k_cmd_update_set_aid {
3202         struct  mwl8k_cmd_pkt header;
3203         __le16  aid;
3204
3205          /* AP's MAC address (BSSID) */
3206         __u8    bssid[ETH_ALEN];
3207         __le16  protection_mode;
3208         __u8    supp_rates[14];
3209 } __packed;
3210
3211 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3212 {
3213         int i;
3214         int j;
3215
3216         /*
3217          * Clear nonstandard rate 4.
3218          */
3219         mask &= 0x1fef;
3220
3221         for (i = 0, j = 0; i < 13; i++) {
3222                 if (mask & (1 << i))
3223                         rates[j++] = mwl8k_rates_24[i].hw_value;
3224         }
3225 }
3226
3227 static int
3228 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3229                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3230 {
3231         struct mwl8k_cmd_update_set_aid *cmd;
3232         u16 prot_mode;
3233         int rc;
3234
3235         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3236         if (cmd == NULL)
3237                 return -ENOMEM;
3238
3239         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3240         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3241         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3242         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3243
3244         if (vif->bss_conf.use_cts_prot) {
3245                 prot_mode = MWL8K_FRAME_PROT_11G;
3246         } else {
3247                 switch (vif->bss_conf.ht_operation_mode &
3248                         IEEE80211_HT_OP_MODE_PROTECTION) {
3249                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3250                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3251                         break;
3252                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3253                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3254                         break;
3255                 default:
3256                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3257                         break;
3258                 }
3259         }
3260         cmd->protection_mode = cpu_to_le16(prot_mode);
3261
3262         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3263
3264         rc = mwl8k_post_cmd(hw, &cmd->header);
3265         kfree(cmd);
3266
3267         return rc;
3268 }
3269
3270 /*
3271  * CMD_SET_RATE.
3272  */
3273 struct mwl8k_cmd_set_rate {
3274         struct  mwl8k_cmd_pkt header;
3275         __u8    legacy_rates[14];
3276
3277         /* Bitmap for supported MCS codes.  */
3278         __u8    mcs_set[16];
3279         __u8    reserved[16];
3280 } __packed;
3281
3282 static int
3283 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3284                    u32 legacy_rate_mask, u8 *mcs_rates)
3285 {
3286         struct mwl8k_cmd_set_rate *cmd;
3287         int rc;
3288
3289         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3290         if (cmd == NULL)
3291                 return -ENOMEM;
3292
3293         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3294         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3295         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3296         memcpy(cmd->mcs_set, mcs_rates, 16);
3297
3298         rc = mwl8k_post_cmd(hw, &cmd->header);
3299         kfree(cmd);
3300
3301         return rc;
3302 }
3303
3304 /*
3305  * CMD_FINALIZE_JOIN.
3306  */
3307 #define MWL8K_FJ_BEACON_MAXLEN  128
3308
3309 struct mwl8k_cmd_finalize_join {
3310         struct mwl8k_cmd_pkt header;
3311         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3312         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3313 } __packed;
3314
3315 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3316                                    int framelen, int dtim)
3317 {
3318         struct mwl8k_cmd_finalize_join *cmd;
3319         struct ieee80211_mgmt *payload = frame;
3320         int payload_len;
3321         int rc;
3322
3323         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3324         if (cmd == NULL)
3325                 return -ENOMEM;
3326
3327         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3328         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3329         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3330
3331         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3332         if (payload_len < 0)
3333                 payload_len = 0;
3334         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3335                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3336
3337         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3338
3339         rc = mwl8k_post_cmd(hw, &cmd->header);
3340         kfree(cmd);
3341
3342         return rc;
3343 }
3344
3345 /*
3346  * CMD_SET_RTS_THRESHOLD.
3347  */
3348 struct mwl8k_cmd_set_rts_threshold {
3349         struct mwl8k_cmd_pkt header;
3350         __le16 action;
3351         __le16 threshold;
3352 } __packed;
3353
3354 static int
3355 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3356 {
3357         struct mwl8k_cmd_set_rts_threshold *cmd;
3358         int rc;
3359
3360         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3361         if (cmd == NULL)
3362                 return -ENOMEM;
3363
3364         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3365         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3366         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3367         cmd->threshold = cpu_to_le16(rts_thresh);
3368
3369         rc = mwl8k_post_cmd(hw, &cmd->header);
3370         kfree(cmd);
3371
3372         return rc;
3373 }
3374
3375 /*
3376  * CMD_SET_SLOT.
3377  */
3378 struct mwl8k_cmd_set_slot {
3379         struct mwl8k_cmd_pkt header;
3380         __le16 action;
3381         __u8 short_slot;
3382 } __packed;
3383
3384 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3385 {
3386         struct mwl8k_cmd_set_slot *cmd;
3387         int rc;
3388
3389         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3390         if (cmd == NULL)
3391                 return -ENOMEM;
3392
3393         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3394         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3395         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3396         cmd->short_slot = short_slot_time;
3397
3398         rc = mwl8k_post_cmd(hw, &cmd->header);
3399         kfree(cmd);
3400
3401         return rc;
3402 }
3403
3404 /*
3405  * CMD_SET_EDCA_PARAMS.
3406  */
3407 struct mwl8k_cmd_set_edca_params {
3408         struct mwl8k_cmd_pkt header;
3409
3410         /* See MWL8K_SET_EDCA_XXX below */
3411         __le16 action;
3412
3413         /* TX opportunity in units of 32 us */
3414         __le16 txop;
3415
3416         union {
3417                 struct {
3418                         /* Log exponent of max contention period: 0...15 */
3419                         __le32 log_cw_max;
3420
3421                         /* Log exponent of min contention period: 0...15 */
3422                         __le32 log_cw_min;
3423
3424                         /* Adaptive interframe spacing in units of 32us */
3425                         __u8 aifs;
3426
3427                         /* TX queue to configure */
3428                         __u8 txq;
3429                 } ap;
3430                 struct {
3431                         /* Log exponent of max contention period: 0...15 */
3432                         __u8 log_cw_max;
3433
3434                         /* Log exponent of min contention period: 0...15 */
3435                         __u8 log_cw_min;
3436
3437                         /* Adaptive interframe spacing in units of 32us */
3438                         __u8 aifs;
3439
3440                         /* TX queue to configure */
3441                         __u8 txq;
3442                 } sta;
3443         };
3444 } __packed;
3445
3446 #define MWL8K_SET_EDCA_CW       0x01
3447 #define MWL8K_SET_EDCA_TXOP     0x02
3448 #define MWL8K_SET_EDCA_AIFS     0x04
3449
3450 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3451                                  MWL8K_SET_EDCA_TXOP | \
3452                                  MWL8K_SET_EDCA_AIFS)
3453
3454 static int
3455 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3456                           __u16 cw_min, __u16 cw_max,
3457                           __u8 aifs, __u16 txop)
3458 {
3459         struct mwl8k_priv *priv = hw->priv;
3460         struct mwl8k_cmd_set_edca_params *cmd;
3461         int rc;
3462
3463         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3464         if (cmd == NULL)
3465                 return -ENOMEM;
3466
3467         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3468         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3469         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3470         cmd->txop = cpu_to_le16(txop);
3471         if (priv->ap_fw) {
3472                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3473                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3474                 cmd->ap.aifs = aifs;
3475                 cmd->ap.txq = qnum;
3476         } else {
3477                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3478                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3479                 cmd->sta.aifs = aifs;
3480                 cmd->sta.txq = qnum;
3481         }
3482
3483         rc = mwl8k_post_cmd(hw, &cmd->header);
3484         kfree(cmd);
3485
3486         return rc;
3487 }
3488
3489 /*
3490  * CMD_SET_WMM_MODE.
3491  */
3492 struct mwl8k_cmd_set_wmm_mode {
3493         struct mwl8k_cmd_pkt header;
3494         __le16 action;
3495 } __packed;
3496
3497 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3498 {
3499         struct mwl8k_priv *priv = hw->priv;
3500         struct mwl8k_cmd_set_wmm_mode *cmd;
3501         int rc;
3502
3503         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3504         if (cmd == NULL)
3505                 return -ENOMEM;
3506
3507         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3508         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3509         cmd->action = cpu_to_le16(!!enable);
3510
3511         rc = mwl8k_post_cmd(hw, &cmd->header);
3512         kfree(cmd);
3513
3514         if (!rc)
3515                 priv->wmm_enabled = enable;
3516
3517         return rc;
3518 }
3519
3520 /*
3521  * CMD_MIMO_CONFIG.
3522  */
3523 struct mwl8k_cmd_mimo_config {
3524         struct mwl8k_cmd_pkt header;
3525         __le32 action;
3526         __u8 rx_antenna_map;
3527         __u8 tx_antenna_map;
3528 } __packed;
3529
3530 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3531 {
3532         struct mwl8k_cmd_mimo_config *cmd;
3533         int rc;
3534
3535         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3536         if (cmd == NULL)
3537                 return -ENOMEM;
3538
3539         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3540         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3541         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3542         cmd->rx_antenna_map = rx;
3543         cmd->tx_antenna_map = tx;
3544
3545         rc = mwl8k_post_cmd(hw, &cmd->header);
3546         kfree(cmd);
3547
3548         return rc;
3549 }
3550
3551 /*
3552  * CMD_USE_FIXED_RATE (STA version).
3553  */
3554 struct mwl8k_cmd_use_fixed_rate_sta {
3555         struct mwl8k_cmd_pkt header;
3556         __le32 action;
3557         __le32 allow_rate_drop;
3558         __le32 num_rates;
3559         struct {
3560                 __le32 is_ht_rate;
3561                 __le32 enable_retry;
3562                 __le32 rate;
3563                 __le32 retry_count;
3564         } rate_entry[8];
3565         __le32 rate_type;
3566         __le32 reserved1;
3567         __le32 reserved2;
3568 } __packed;
3569
3570 #define MWL8K_USE_AUTO_RATE     0x0002
3571 #define MWL8K_UCAST_RATE        0
3572
3573 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3574 {
3575         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3576         int rc;
3577
3578         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3579         if (cmd == NULL)
3580                 return -ENOMEM;
3581
3582         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3583         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3584         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3585         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3586
3587         rc = mwl8k_post_cmd(hw, &cmd->header);
3588         kfree(cmd);
3589
3590         return rc;
3591 }
3592
3593 /*
3594  * CMD_USE_FIXED_RATE (AP version).
3595  */
3596 struct mwl8k_cmd_use_fixed_rate_ap {
3597         struct mwl8k_cmd_pkt header;
3598         __le32 action;
3599         __le32 allow_rate_drop;
3600         __le32 num_rates;
3601         struct mwl8k_rate_entry_ap {
3602                 __le32 is_ht_rate;
3603                 __le32 enable_retry;
3604                 __le32 rate;
3605                 __le32 retry_count;
3606         } rate_entry[4];
3607         u8 multicast_rate;
3608         u8 multicast_rate_type;
3609         u8 management_rate;
3610 } __packed;
3611
3612 static int
3613 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3614 {
3615         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3616         int rc;
3617
3618         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3619         if (cmd == NULL)
3620                 return -ENOMEM;
3621
3622         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3623         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3624         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3625         cmd->multicast_rate = mcast;
3626         cmd->management_rate = mgmt;
3627
3628         rc = mwl8k_post_cmd(hw, &cmd->header);
3629         kfree(cmd);
3630
3631         return rc;
3632 }
3633
3634 /*
3635  * CMD_ENABLE_SNIFFER.
3636  */
3637 struct mwl8k_cmd_enable_sniffer {
3638         struct mwl8k_cmd_pkt header;
3639         __le32 action;
3640 } __packed;
3641
3642 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3643 {
3644         struct mwl8k_cmd_enable_sniffer *cmd;
3645         int rc;
3646
3647         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3648         if (cmd == NULL)
3649                 return -ENOMEM;
3650
3651         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3652         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3653         cmd->action = cpu_to_le32(!!enable);
3654
3655         rc = mwl8k_post_cmd(hw, &cmd->header);
3656         kfree(cmd);
3657
3658         return rc;
3659 }
3660
3661 struct mwl8k_cmd_update_mac_addr {
3662         struct mwl8k_cmd_pkt header;
3663         union {
3664                 struct {
3665                         __le16 mac_type;
3666                         __u8 mac_addr[ETH_ALEN];
3667                 } mbss;
3668                 __u8 mac_addr[ETH_ALEN];
3669         };
3670 } __packed;
3671
3672 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3673 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3674 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3675 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3676
3677 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3678                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3679 {
3680         struct mwl8k_priv *priv = hw->priv;
3681         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3682         struct mwl8k_cmd_update_mac_addr *cmd;
3683         int mac_type;
3684         int rc;
3685
3686         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3687         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3688                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3689                         if (priv->ap_fw)
3690                                 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3691                         else
3692                                 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3693                 else
3694                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3695         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3696                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3697                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3698                 else
3699                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3700         }
3701
3702         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3703         if (cmd == NULL)
3704                 return -ENOMEM;
3705
3706         if (set)
3707                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3708         else
3709                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3710
3711         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3712         if (priv->ap_fw) {
3713                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3714                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3715         } else {
3716                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3717         }
3718
3719         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3720         kfree(cmd);
3721
3722         return rc;
3723 }
3724
3725 /*
3726  * MWL8K_CMD_SET_MAC_ADDR.
3727  */
3728 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3729                                   struct ieee80211_vif *vif, u8 *mac)
3730 {
3731         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3732 }
3733
3734 /*
3735  * MWL8K_CMD_DEL_MAC_ADDR.
3736  */
3737 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3738                                   struct ieee80211_vif *vif, u8 *mac)
3739 {
3740         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3741 }
3742
3743 /*
3744  * CMD_SET_RATEADAPT_MODE.
3745  */
3746 struct mwl8k_cmd_set_rate_adapt_mode {
3747         struct mwl8k_cmd_pkt header;
3748         __le16 action;
3749         __le16 mode;
3750 } __packed;
3751
3752 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3753 {
3754         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3755         int rc;
3756
3757         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3758         if (cmd == NULL)
3759                 return -ENOMEM;
3760
3761         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3762         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3763         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3764         cmd->mode = cpu_to_le16(mode);
3765
3766         rc = mwl8k_post_cmd(hw, &cmd->header);
3767         kfree(cmd);
3768
3769         return rc;
3770 }
3771
3772 /*
3773  * CMD_GET_WATCHDOG_BITMAP.
3774  */
3775 struct mwl8k_cmd_get_watchdog_bitmap {
3776         struct mwl8k_cmd_pkt header;
3777         u8      bitmap;
3778 } __packed;
3779
3780 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3781 {
3782         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3783         int rc;
3784
3785         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3786         if (cmd == NULL)
3787                 return -ENOMEM;
3788
3789         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3790         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3791
3792         rc = mwl8k_post_cmd(hw, &cmd->header);
3793         if (!rc)
3794                 *bitmap = cmd->bitmap;
3795
3796         kfree(cmd);
3797
3798         return rc;
3799 }
3800
3801 #define MWL8K_WMM_QUEUE_NUMBER  3
3802
3803 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3804                              u8 idx);
3805
3806 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3807 {
3808         int rc;
3809         u8 bitmap = 0, stream_index;
3810         struct mwl8k_ampdu_stream *streams;
3811         struct mwl8k_priv *priv =
3812                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3813         struct ieee80211_hw *hw = priv->hw;
3814         int i;
3815         u32 status = 0;
3816
3817         mwl8k_fw_lock(hw);
3818
3819         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3820         if (rc)
3821                 goto done;
3822
3823         spin_lock(&priv->stream_lock);
3824
3825         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3826         for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3827                 if (bitmap & (1 << i)) {
3828                         stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3829                                        TOTAL_HW_TX_QUEUES;
3830                         streams = &priv->ampdu[stream_index];
3831                         if (streams->state == AMPDU_STREAM_ACTIVE) {
3832                                 ieee80211_stop_tx_ba_session(streams->sta,
3833                                                              streams->tid);
3834                                 spin_unlock(&priv->stream_lock);
3835                                 mwl8k_destroy_ba(hw, stream_index);
3836                                 spin_lock(&priv->stream_lock);
3837                         }
3838                 }
3839         }
3840
3841         spin_unlock(&priv->stream_lock);
3842 done:
3843         atomic_dec(&priv->watchdog_event_pending);
3844         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3845         iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3846                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3847         mwl8k_fw_unlock(hw);
3848         return;
3849 }
3850
3851
3852 /*
3853  * CMD_BSS_START.
3854  */
3855 struct mwl8k_cmd_bss_start {
3856         struct mwl8k_cmd_pkt header;
3857         __le32 enable;
3858 } __packed;
3859
3860 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3861                                struct ieee80211_vif *vif, int enable)
3862 {
3863         struct mwl8k_cmd_bss_start *cmd;
3864         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3865         struct mwl8k_priv *priv = hw->priv;
3866         int rc;
3867
3868         if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3869                 return 0;
3870
3871         if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3872                 return 0;
3873
3874         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3875         if (cmd == NULL)
3876                 return -ENOMEM;
3877
3878         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3879         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3880         cmd->enable = cpu_to_le32(enable);
3881
3882         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3883         kfree(cmd);
3884
3885         if (!rc) {
3886                 if (enable)
3887                         priv->running_bsses |= (1 << mwl8k_vif->macid);
3888                 else
3889                         priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3890         }
3891         return rc;
3892 }
3893
3894 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3895 {
3896         struct mwl8k_priv *priv = hw->priv;
3897         struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3898         struct ieee80211_vif *vif;
3899
3900         list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3901                 vif = mwl8k_vif->vif;
3902
3903                 if (!(bitmap & (1 << mwl8k_vif->macid)))
3904                         continue;
3905
3906                 if (vif->type == NL80211_IFTYPE_AP)
3907                         mwl8k_cmd_bss_start(hw, vif, enable);
3908         }
3909 }
3910 /*
3911  * CMD_BASTREAM.
3912  */
3913
3914 /*
3915  * UPSTREAM is tx direction
3916  */
3917 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3918 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3919
3920 enum ba_stream_action_type {
3921         MWL8K_BA_CREATE,
3922         MWL8K_BA_UPDATE,
3923         MWL8K_BA_DESTROY,
3924         MWL8K_BA_FLUSH,
3925         MWL8K_BA_CHECK,
3926 };
3927
3928
3929 struct mwl8k_create_ba_stream {
3930         __le32  flags;
3931         __le32  idle_thrs;
3932         __le32  bar_thrs;
3933         __le32  window_size;
3934         u8      peer_mac_addr[6];
3935         u8      dialog_token;
3936         u8      tid;
3937         u8      queue_id;
3938         u8      param_info;
3939         __le32  ba_context;
3940         u8      reset_seq_no_flag;
3941         __le16  curr_seq_no;
3942         u8      sta_src_mac_addr[6];
3943 } __packed;
3944
3945 struct mwl8k_destroy_ba_stream {
3946         __le32  flags;
3947         __le32  ba_context;
3948 } __packed;
3949
3950 struct mwl8k_cmd_bastream {
3951         struct mwl8k_cmd_pkt    header;
3952         __le32  action;
3953         union {
3954                 struct mwl8k_create_ba_stream   create_params;
3955                 struct mwl8k_destroy_ba_stream  destroy_params;
3956         };
3957 } __packed;
3958
3959 static int
3960 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3961                struct ieee80211_vif *vif)
3962 {
3963         struct mwl8k_cmd_bastream *cmd;
3964         int rc;
3965
3966         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3967         if (cmd == NULL)
3968                 return -ENOMEM;
3969
3970         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3971         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3972
3973         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3974
3975         cmd->create_params.queue_id = stream->idx;
3976         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3977                ETH_ALEN);
3978         cmd->create_params.tid = stream->tid;
3979
3980         cmd->create_params.flags =
3981                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3982                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3983
3984         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3985
3986         kfree(cmd);
3987
3988         return rc;
3989 }
3990
3991 static int
3992 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3993                 u8 buf_size, struct ieee80211_vif *vif)
3994 {
3995         struct mwl8k_cmd_bastream *cmd;
3996         int rc;
3997
3998         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3999         if (cmd == NULL)
4000                 return -ENOMEM;
4001
4002
4003         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4004         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4005
4006         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4007
4008         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4009         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4010         cmd->create_params.queue_id = stream->idx;
4011
4012         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4013         cmd->create_params.tid = stream->tid;
4014         cmd->create_params.curr_seq_no = cpu_to_le16(0);
4015         cmd->create_params.reset_seq_no_flag = 1;
4016
4017         cmd->create_params.param_info =
4018                 (stream->sta->ht_cap.ampdu_factor &
4019                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
4020                 ((stream->sta->ht_cap.ampdu_density << 2) &
4021                  IEEE80211_HT_AMPDU_PARM_DENSITY);
4022
4023         cmd->create_params.flags =
4024                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4025                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
4026
4027         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4028
4029         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4030                 stream->sta->addr, stream->tid);
4031         kfree(cmd);
4032
4033         return rc;
4034 }
4035
4036 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4037                              u8 idx)
4038 {
4039         struct mwl8k_cmd_bastream *cmd;
4040
4041         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4042         if (cmd == NULL)
4043                 return;
4044
4045         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4046         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4047         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4048
4049         cmd->destroy_params.ba_context = cpu_to_le32(idx);
4050         mwl8k_post_cmd(hw, &cmd->header);
4051
4052         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4053
4054         kfree(cmd);
4055 }
4056
4057 /*
4058  * CMD_SET_NEW_STN.
4059  */
4060 struct mwl8k_cmd_set_new_stn {
4061         struct mwl8k_cmd_pkt header;
4062         __le16 aid;
4063         __u8 mac_addr[6];
4064         __le16 stn_id;
4065         __le16 action;
4066         __le16 rsvd;
4067         __le32 legacy_rates;
4068         __u8 ht_rates[4];
4069         __le16 cap_info;
4070         __le16 ht_capabilities_info;
4071         __u8 mac_ht_param_info;
4072         __u8 rev;
4073         __u8 control_channel;
4074         __u8 add_channel;
4075         __le16 op_mode;
4076         __le16 stbc;
4077         __u8 add_qos_info;
4078         __u8 is_qos_sta;
4079         __le32 fw_sta_ptr;
4080 } __packed;
4081
4082 #define MWL8K_STA_ACTION_ADD            0
4083 #define MWL8K_STA_ACTION_REMOVE         2
4084
4085 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4086                                      struct ieee80211_vif *vif,
4087                                      struct ieee80211_sta *sta)
4088 {
4089         struct mwl8k_cmd_set_new_stn *cmd;
4090         u32 rates;
4091         int rc;
4092
4093         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4094         if (cmd == NULL)
4095                 return -ENOMEM;
4096
4097         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4098         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4099         cmd->aid = cpu_to_le16(sta->aid);
4100         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4101         cmd->stn_id = cpu_to_le16(sta->aid);
4102         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4103         if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4104                 rates = sta->supp_rates[NL80211_BAND_2GHZ];
4105         else
4106                 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5;
4107         cmd->legacy_rates = cpu_to_le32(rates);
4108         if (sta->ht_cap.ht_supported) {
4109                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
4110                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
4111                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
4112                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
4113                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
4114                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
4115                         ((sta->ht_cap.ampdu_density & 7) << 2);
4116                 cmd->is_qos_sta = 1;
4117         }
4118
4119         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4120         kfree(cmd);
4121
4122         return rc;
4123 }
4124
4125 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4126                                           struct ieee80211_vif *vif)
4127 {
4128         struct mwl8k_cmd_set_new_stn *cmd;
4129         int rc;
4130
4131         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4132         if (cmd == NULL)
4133                 return -ENOMEM;
4134
4135         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4136         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4137         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4138
4139         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4140         kfree(cmd);
4141
4142         return rc;
4143 }
4144
4145 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4146                                      struct ieee80211_vif *vif, u8 *addr)
4147 {
4148         struct mwl8k_cmd_set_new_stn *cmd;
4149         struct mwl8k_priv *priv = hw->priv;
4150         int rc, i;
4151         u8 idx;
4152
4153         spin_lock(&priv->stream_lock);
4154         /* Destroy any active ampdu streams for this sta */
4155         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4156                 struct mwl8k_ampdu_stream *s;
4157                 s = &priv->ampdu[i];
4158                 if (s->state != AMPDU_NO_STREAM) {
4159                         if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4160                                 if (s->state == AMPDU_STREAM_ACTIVE) {
4161                                         idx = s->idx;
4162                                         spin_unlock(&priv->stream_lock);
4163                                         mwl8k_destroy_ba(hw, idx);
4164                                         spin_lock(&priv->stream_lock);
4165                                 } else if (s->state == AMPDU_STREAM_NEW) {
4166                                         mwl8k_remove_stream(hw, s);
4167                                 }
4168                         }
4169                 }
4170         }
4171
4172         spin_unlock(&priv->stream_lock);
4173
4174         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4175         if (cmd == NULL)
4176                 return -ENOMEM;
4177
4178         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4179         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4180         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4181         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4182
4183         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4184         kfree(cmd);
4185
4186         return rc;
4187 }
4188
4189 /*
4190  * CMD_UPDATE_ENCRYPTION.
4191  */
4192
4193 #define MAX_ENCR_KEY_LENGTH     16
4194 #define MIC_KEY_LENGTH          8
4195
4196 struct mwl8k_cmd_update_encryption {
4197         struct mwl8k_cmd_pkt header;
4198
4199         __le32 action;
4200         __le32 reserved;
4201         __u8 mac_addr[6];
4202         __u8 encr_type;
4203
4204 } __packed;
4205
4206 struct mwl8k_cmd_set_key {
4207         struct mwl8k_cmd_pkt header;
4208
4209         __le32 action;
4210         __le32 reserved;
4211         __le16 length;
4212         __le16 key_type_id;
4213         __le32 key_info;
4214         __le32 key_id;
4215         __le16 key_len;
4216         __u8 key_material[MAX_ENCR_KEY_LENGTH];
4217         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4218         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4219         __le16 tkip_rsc_low;
4220         __le32 tkip_rsc_high;
4221         __le16 tkip_tsc_low;
4222         __le32 tkip_tsc_high;
4223         __u8 mac_addr[6];
4224 } __packed;
4225
4226 enum {
4227         MWL8K_ENCR_ENABLE,
4228         MWL8K_ENCR_SET_KEY,
4229         MWL8K_ENCR_REMOVE_KEY,
4230         MWL8K_ENCR_SET_GROUP_KEY,
4231 };
4232
4233 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
4234 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
4235 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
4236 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
4237 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
4238
4239 enum {
4240         MWL8K_ALG_WEP,
4241         MWL8K_ALG_TKIP,
4242         MWL8K_ALG_CCMP,
4243 };
4244
4245 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
4246 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
4247 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
4248 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
4249 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
4250
4251 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4252                                               struct ieee80211_vif *vif,
4253                                               u8 *addr,
4254                                               u8 encr_type)
4255 {
4256         struct mwl8k_cmd_update_encryption *cmd;
4257         int rc;
4258
4259         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4260         if (cmd == NULL)
4261                 return -ENOMEM;
4262
4263         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4264         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4265         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4266         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4267         cmd->encr_type = encr_type;
4268
4269         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4270         kfree(cmd);
4271
4272         return rc;
4273 }
4274
4275 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4276                                                 u8 *addr,
4277                                                 struct ieee80211_key_conf *key)
4278 {
4279         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4280         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4281         cmd->length = cpu_to_le16(sizeof(*cmd) -
4282                                 offsetof(struct mwl8k_cmd_set_key, length));
4283         cmd->key_id = cpu_to_le32(key->keyidx);
4284         cmd->key_len = cpu_to_le16(key->keylen);
4285         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4286
4287         switch (key->cipher) {
4288         case WLAN_CIPHER_SUITE_WEP40:
4289         case WLAN_CIPHER_SUITE_WEP104:
4290                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4291                 if (key->keyidx == 0)
4292                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4293
4294                 break;
4295         case WLAN_CIPHER_SUITE_TKIP:
4296                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4297                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4298                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4299                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4300                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4301                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4302                 break;
4303         case WLAN_CIPHER_SUITE_CCMP:
4304                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4305                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4306                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4307                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4308                 break;
4309         default:
4310                 return -ENOTSUPP;
4311         }
4312
4313         return 0;
4314 }
4315
4316 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4317                                                 struct ieee80211_vif *vif,
4318                                                 u8 *addr,
4319                                                 struct ieee80211_key_conf *key)
4320 {
4321         struct mwl8k_cmd_set_key *cmd;
4322         int rc;
4323         int keymlen;
4324         u32 action;
4325         u8 idx;
4326         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4327
4328         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4329         if (cmd == NULL)
4330                 return -ENOMEM;
4331
4332         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4333         if (rc < 0)
4334                 goto done;
4335
4336         idx = key->keyidx;
4337
4338         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4339                 action = MWL8K_ENCR_SET_KEY;
4340         else
4341                 action = MWL8K_ENCR_SET_GROUP_KEY;
4342
4343         switch (key->cipher) {
4344         case WLAN_CIPHER_SUITE_WEP40:
4345         case WLAN_CIPHER_SUITE_WEP104:
4346                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4347                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4348                                                 sizeof(*key) + key->keylen);
4349                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4350                 }
4351
4352                 keymlen = key->keylen;
4353                 action = MWL8K_ENCR_SET_KEY;
4354                 break;
4355         case WLAN_CIPHER_SUITE_TKIP:
4356                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4357                 break;
4358         case WLAN_CIPHER_SUITE_CCMP:
4359                 keymlen = key->keylen;
4360                 break;
4361         default:
4362                 rc = -ENOTSUPP;
4363                 goto done;
4364         }
4365
4366         memcpy(cmd->key_material, key->key, keymlen);
4367         cmd->action = cpu_to_le32(action);
4368
4369         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4370 done:
4371         kfree(cmd);
4372
4373         return rc;
4374 }
4375
4376 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4377                                                 struct ieee80211_vif *vif,
4378                                                 u8 *addr,
4379                                                 struct ieee80211_key_conf *key)
4380 {
4381         struct mwl8k_cmd_set_key *cmd;
4382         int rc;
4383         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4384
4385         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4386         if (cmd == NULL)
4387                 return -ENOMEM;
4388
4389         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4390         if (rc < 0)
4391                 goto done;
4392
4393         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4394                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4395                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4396
4397         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4398
4399         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4400 done:
4401         kfree(cmd);
4402
4403         return rc;
4404 }
4405
4406 static int mwl8k_set_key(struct ieee80211_hw *hw,
4407                          enum set_key_cmd cmd_param,
4408                          struct ieee80211_vif *vif,
4409                          struct ieee80211_sta *sta,
4410                          struct ieee80211_key_conf *key)
4411 {
4412         int rc = 0;
4413         u8 encr_type;
4414         u8 *addr;
4415         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4416         struct mwl8k_priv *priv = hw->priv;
4417
4418         if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4419                 return -EOPNOTSUPP;
4420
4421         if (sta == NULL)
4422                 addr = vif->addr;
4423         else
4424                 addr = sta->addr;
4425
4426         if (cmd_param == SET_KEY) {
4427                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4428                 if (rc)
4429                         goto out;
4430
4431                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4432                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4433                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4434                 else
4435                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4436
4437                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4438                                                                 encr_type);
4439                 if (rc)
4440                         goto out;
4441
4442                 mwl8k_vif->is_hw_crypto_enabled = true;
4443
4444         } else {
4445                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4446
4447                 if (rc)
4448                         goto out;
4449         }
4450 out:
4451         return rc;
4452 }
4453
4454 /*
4455  * CMD_UPDATE_STADB.
4456  */
4457 struct ewc_ht_info {
4458         __le16  control1;
4459         __le16  control2;
4460         __le16  control3;
4461 } __packed;
4462
4463 struct peer_capability_info {
4464         /* Peer type - AP vs. STA.  */
4465         __u8    peer_type;
4466
4467         /* Basic 802.11 capabilities from assoc resp.  */
4468         __le16  basic_caps;
4469
4470         /* Set if peer supports 802.11n high throughput (HT).  */
4471         __u8    ht_support;
4472
4473         /* Valid if HT is supported.  */
4474         __le16  ht_caps;
4475         __u8    extended_ht_caps;
4476         struct ewc_ht_info      ewc_info;
4477
4478         /* Legacy rate table. Intersection of our rates and peer rates.  */
4479         __u8    legacy_rates[12];
4480
4481         /* HT rate table. Intersection of our rates and peer rates.  */
4482         __u8    ht_rates[16];
4483         __u8    pad[16];
4484
4485         /* If set, interoperability mode, no proprietary extensions.  */
4486         __u8    interop;
4487         __u8    pad2;
4488         __u8    station_id;
4489         __le16  amsdu_enabled;
4490 } __packed;
4491
4492 struct mwl8k_cmd_update_stadb {
4493         struct mwl8k_cmd_pkt header;
4494
4495         /* See STADB_ACTION_TYPE */
4496         __le32  action;
4497
4498         /* Peer MAC address */
4499         __u8    peer_addr[ETH_ALEN];
4500
4501         __le32  reserved;
4502
4503         /* Peer info - valid during add/update.  */
4504         struct peer_capability_info     peer_info;
4505 } __packed;
4506
4507 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4508 #define MWL8K_STA_DB_DEL_ENTRY          2
4509
4510 /* Peer Entry flags - used to define the type of the peer node */
4511 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4512
4513 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4514                                       struct ieee80211_vif *vif,
4515                                       struct ieee80211_sta *sta)
4516 {
4517         struct mwl8k_cmd_update_stadb *cmd;
4518         struct peer_capability_info *p;
4519         u32 rates;
4520         int rc;
4521
4522         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4523         if (cmd == NULL)
4524                 return -ENOMEM;
4525
4526         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4527         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4528         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4529         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4530
4531         p = &cmd->peer_info;
4532         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4533         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4534         p->ht_support = sta->ht_cap.ht_supported;
4535         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4536         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4537                 ((sta->ht_cap.ampdu_density & 7) << 2);
4538         if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4539                 rates = sta->supp_rates[NL80211_BAND_2GHZ];
4540         else
4541                 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5;
4542         legacy_rate_mask_to_array(p->legacy_rates, rates);
4543         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4544         p->interop = 1;
4545         p->amsdu_enabled = 0;
4546
4547         rc = mwl8k_post_cmd(hw, &cmd->header);
4548         if (!rc)
4549                 rc = p->station_id;
4550         kfree(cmd);
4551
4552         return rc;
4553 }
4554
4555 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4556                                       struct ieee80211_vif *vif, u8 *addr)
4557 {
4558         struct mwl8k_cmd_update_stadb *cmd;
4559         int rc;
4560
4561         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4562         if (cmd == NULL)
4563                 return -ENOMEM;
4564
4565         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4566         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4567         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4568         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4569
4570         rc = mwl8k_post_cmd(hw, &cmd->header);
4571         kfree(cmd);
4572
4573         return rc;
4574 }
4575
4576
4577 /*
4578  * Interrupt handling.
4579  */
4580 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4581 {
4582         struct ieee80211_hw *hw = dev_id;
4583         struct mwl8k_priv *priv = hw->priv;
4584         u32 status;
4585
4586         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4587         if (!status)
4588                 return IRQ_NONE;
4589
4590         if (status & MWL8K_A2H_INT_TX_DONE) {
4591                 status &= ~MWL8K_A2H_INT_TX_DONE;
4592                 tasklet_schedule(&priv->poll_tx_task);
4593         }
4594
4595         if (status & MWL8K_A2H_INT_RX_READY) {
4596                 status &= ~MWL8K_A2H_INT_RX_READY;
4597                 tasklet_schedule(&priv->poll_rx_task);
4598         }
4599
4600         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4601                 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4602                           priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4603
4604                 atomic_inc(&priv->watchdog_event_pending);
4605                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4606                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4607         }
4608
4609         if (status)
4610                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4611
4612         if (status & MWL8K_A2H_INT_OPC_DONE) {
4613                 if (priv->hostcmd_wait != NULL)
4614                         complete(priv->hostcmd_wait);
4615         }
4616
4617         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4618                 if (!mutex_is_locked(&priv->fw_mutex) &&
4619                     priv->radio_on && priv->pending_tx_pkts)
4620                         mwl8k_tx_start(priv);
4621         }
4622
4623         return IRQ_HANDLED;
4624 }
4625
4626 static void mwl8k_tx_poll(unsigned long data)
4627 {
4628         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4629         struct mwl8k_priv *priv = hw->priv;
4630         int limit;
4631         int i;
4632
4633         limit = 32;
4634
4635         spin_lock_bh(&priv->tx_lock);
4636
4637         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4638                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4639
4640         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4641                 complete(priv->tx_wait);
4642                 priv->tx_wait = NULL;
4643         }
4644
4645         spin_unlock_bh(&priv->tx_lock);
4646
4647         if (limit) {
4648                 writel(~MWL8K_A2H_INT_TX_DONE,
4649                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4650         } else {
4651                 tasklet_schedule(&priv->poll_tx_task);
4652         }
4653 }
4654
4655 static void mwl8k_rx_poll(unsigned long data)
4656 {
4657         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4658         struct mwl8k_priv *priv = hw->priv;
4659         int limit;
4660
4661         limit = 32;
4662         limit -= rxq_process(hw, 0, limit);
4663         limit -= rxq_refill(hw, 0, limit);
4664
4665         if (limit) {
4666                 writel(~MWL8K_A2H_INT_RX_READY,
4667                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4668         } else {
4669                 tasklet_schedule(&priv->poll_rx_task);
4670         }
4671 }
4672
4673
4674 /*
4675  * Core driver operations.
4676  */
4677 static void mwl8k_tx(struct ieee80211_hw *hw,
4678                      struct ieee80211_tx_control *control,
4679                      struct sk_buff *skb)
4680 {
4681         struct mwl8k_priv *priv = hw->priv;
4682         int index = skb_get_queue_mapping(skb);
4683
4684         if (!priv->radio_on) {
4685                 wiphy_debug(hw->wiphy,
4686                             "dropped TX frame since radio disabled\n");
4687                 dev_kfree_skb(skb);
4688                 return;
4689         }
4690
4691         mwl8k_txq_xmit(hw, index, control->sta, skb);
4692 }
4693
4694 static int mwl8k_start(struct ieee80211_hw *hw)
4695 {
4696         struct mwl8k_priv *priv = hw->priv;
4697         int rc;
4698
4699         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4700                          IRQF_SHARED, MWL8K_NAME, hw);
4701         if (rc) {
4702                 priv->irq = -1;
4703                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4704                 return -EIO;
4705         }
4706         priv->irq = priv->pdev->irq;
4707
4708         /* Enable TX reclaim and RX tasklets.  */
4709         tasklet_enable(&priv->poll_tx_task);
4710         tasklet_enable(&priv->poll_rx_task);
4711
4712         /* Enable interrupts */
4713         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4714         iowrite32(MWL8K_A2H_EVENTS,
4715                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4716
4717         rc = mwl8k_fw_lock(hw);
4718         if (!rc) {
4719                 rc = mwl8k_cmd_radio_enable(hw);
4720
4721                 if (!priv->ap_fw) {
4722                         if (!rc)
4723                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4724
4725                         if (!rc)
4726                                 rc = mwl8k_cmd_set_pre_scan(hw);
4727
4728                         if (!rc)
4729                                 rc = mwl8k_cmd_set_post_scan(hw,
4730                                                 "\x00\x00\x00\x00\x00\x00");
4731                 }
4732
4733                 if (!rc)
4734                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4735
4736                 if (!rc)
4737                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4738
4739                 mwl8k_fw_unlock(hw);
4740         }
4741
4742         if (rc) {
4743                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4744                 free_irq(priv->pdev->irq, hw);
4745                 priv->irq = -1;
4746                 tasklet_disable(&priv->poll_tx_task);
4747                 tasklet_disable(&priv->poll_rx_task);
4748         } else {
4749                 ieee80211_wake_queues(hw);
4750         }
4751
4752         return rc;
4753 }
4754
4755 static void mwl8k_stop(struct ieee80211_hw *hw)
4756 {
4757         struct mwl8k_priv *priv = hw->priv;
4758         int i;
4759
4760         if (!priv->hw_restart_in_progress)
4761                 mwl8k_cmd_radio_disable(hw);
4762
4763         ieee80211_stop_queues(hw);
4764
4765         /* Disable interrupts */
4766         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4767         if (priv->irq != -1) {
4768                 free_irq(priv->pdev->irq, hw);
4769                 priv->irq = -1;
4770         }
4771
4772         /* Stop finalize join worker */
4773         cancel_work_sync(&priv->finalize_join_worker);
4774         cancel_work_sync(&priv->watchdog_ba_handle);
4775         if (priv->beacon_skb != NULL)
4776                 dev_kfree_skb(priv->beacon_skb);
4777
4778         /* Stop TX reclaim and RX tasklets.  */
4779         tasklet_disable(&priv->poll_tx_task);
4780         tasklet_disable(&priv->poll_rx_task);
4781
4782         /* Return all skbs to mac80211 */
4783         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4784                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4785 }
4786
4787 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4788
4789 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4790                                struct ieee80211_vif *vif)
4791 {
4792         struct mwl8k_priv *priv = hw->priv;
4793         struct mwl8k_vif *mwl8k_vif;
4794         u32 macids_supported;
4795         int macid, rc;
4796         struct mwl8k_device_info *di;
4797
4798         /*
4799          * Reject interface creation if sniffer mode is active, as
4800          * STA operation is mutually exclusive with hardware sniffer
4801          * mode.  (Sniffer mode is only used on STA firmware.)
4802          */
4803         if (priv->sniffer_enabled) {
4804                 wiphy_info(hw->wiphy,
4805                            "unable to create STA interface because sniffer mode is enabled\n");
4806                 return -EINVAL;
4807         }
4808
4809         di = priv->device_info;
4810         switch (vif->type) {
4811         case NL80211_IFTYPE_AP:
4812                 if (!priv->ap_fw && di->fw_image_ap) {
4813                         /* we must load the ap fw to meet this request */
4814                         if (!list_empty(&priv->vif_list))
4815                                 return -EBUSY;
4816                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4817                         if (rc)
4818                                 return rc;
4819                 }
4820                 macids_supported = priv->ap_macids_supported;
4821                 break;
4822         case NL80211_IFTYPE_STATION:
4823                 if (priv->ap_fw && di->fw_image_sta) {
4824                         if (!list_empty(&priv->vif_list)) {
4825                                 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4826                                            "Adding STA interface for WDS");
4827                         } else {
4828                                 /* we must load the sta fw to
4829                                  * meet this request.
4830                                  */
4831                                 rc = mwl8k_reload_firmware(hw,
4832                                                            di->fw_image_sta);
4833                                 if (rc)
4834                                         return rc;
4835                         }
4836                 }
4837                 macids_supported = priv->sta_macids_supported;
4838                 break;
4839         default:
4840                 return -EINVAL;
4841         }
4842
4843         macid = ffs(macids_supported & ~priv->macids_used);
4844         if (!macid--)
4845                 return -EBUSY;
4846
4847         /* Setup driver private area. */
4848         mwl8k_vif = MWL8K_VIF(vif);
4849         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4850         mwl8k_vif->vif = vif;
4851         mwl8k_vif->macid = macid;
4852         mwl8k_vif->seqno = 0;
4853         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4854         mwl8k_vif->is_hw_crypto_enabled = false;
4855
4856         /* Set the mac address.  */
4857         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4858
4859         if (vif->type == NL80211_IFTYPE_AP)
4860                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4861
4862         priv->macids_used |= 1 << mwl8k_vif->macid;
4863         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4864
4865         return 0;
4866 }
4867
4868 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4869 {
4870         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4871         if (!priv->macids_used)
4872                 return;
4873
4874         priv->macids_used &= ~(1 << vif->macid);
4875         list_del(&vif->list);
4876 }
4877
4878 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4879                                    struct ieee80211_vif *vif)
4880 {
4881         struct mwl8k_priv *priv = hw->priv;
4882         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4883
4884         if (vif->type == NL80211_IFTYPE_AP)
4885                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4886
4887         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4888
4889         mwl8k_remove_vif(priv, mwl8k_vif);
4890 }
4891
4892 static void mwl8k_hw_restart_work(struct work_struct *work)
4893 {
4894         struct mwl8k_priv *priv =
4895                 container_of(work, struct mwl8k_priv, fw_reload);
4896         struct ieee80211_hw *hw = priv->hw;
4897         struct mwl8k_device_info *di;
4898         int rc;
4899
4900         /* If some command is waiting for a response, clear it */
4901         if (priv->hostcmd_wait != NULL) {
4902                 complete(priv->hostcmd_wait);
4903                 priv->hostcmd_wait = NULL;
4904         }
4905
4906         priv->hw_restart_owner = current;
4907         di = priv->device_info;
4908         mwl8k_fw_lock(hw);
4909
4910         if (priv->ap_fw)
4911                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4912         else
4913                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4914
4915         if (rc)
4916                 goto fail;
4917
4918         priv->hw_restart_owner = NULL;
4919         priv->hw_restart_in_progress = false;
4920
4921         /*
4922          * This unlock will wake up the queues and
4923          * also opens the command path for other
4924          * commands
4925          */
4926         mwl8k_fw_unlock(hw);
4927
4928         ieee80211_restart_hw(hw);
4929
4930         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4931
4932         return;
4933 fail:
4934         mwl8k_fw_unlock(hw);
4935
4936         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4937 }
4938
4939 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4940 {
4941         struct ieee80211_conf *conf = &hw->conf;
4942         struct mwl8k_priv *priv = hw->priv;
4943         int rc;
4944
4945         rc = mwl8k_fw_lock(hw);
4946         if (rc)
4947                 return rc;
4948
4949         if (conf->flags & IEEE80211_CONF_IDLE)
4950                 rc = mwl8k_cmd_radio_disable(hw);
4951         else
4952                 rc = mwl8k_cmd_radio_enable(hw);
4953         if (rc)
4954                 goto out;
4955
4956         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4957                 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4958                 if (rc)
4959                         goto out;
4960         }
4961
4962         if (conf->power_level > 18)
4963                 conf->power_level = 18;
4964
4965         if (priv->ap_fw) {
4966
4967                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4968                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4969                         if (rc)
4970                                 goto out;
4971                 }
4972
4973
4974         } else {
4975                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4976                 if (rc)
4977                         goto out;
4978                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4979         }
4980
4981 out:
4982         mwl8k_fw_unlock(hw);
4983
4984         return rc;
4985 }
4986
4987 static void
4988 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4989                            struct ieee80211_bss_conf *info, u32 changed)
4990 {
4991         struct mwl8k_priv *priv = hw->priv;
4992         u32 ap_legacy_rates = 0;
4993         u8 ap_mcs_rates[16];
4994         int rc;
4995
4996         if (mwl8k_fw_lock(hw))
4997                 return;
4998
4999         /*
5000          * No need to capture a beacon if we're no longer associated.
5001          */
5002         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
5003                 priv->capture_beacon = false;
5004
5005         /*
5006          * Get the AP's legacy and MCS rates.
5007          */
5008         if (vif->bss_conf.assoc) {
5009                 struct ieee80211_sta *ap;
5010
5011                 rcu_read_lock();
5012
5013                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5014                 if (ap == NULL) {
5015                         rcu_read_unlock();
5016                         goto out;
5017                 }
5018
5019                 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) {
5020                         ap_legacy_rates = ap->supp_rates[NL80211_BAND_2GHZ];
5021                 } else {
5022                         ap_legacy_rates =
5023                                 ap->supp_rates[NL80211_BAND_5GHZ] << 5;
5024                 }
5025                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
5026
5027                 rcu_read_unlock();
5028
5029                 if (changed & BSS_CHANGED_ASSOC) {
5030                         if (!priv->ap_fw) {
5031                                 rc = mwl8k_cmd_set_rate(hw, vif,
5032                                                         ap_legacy_rates,
5033                                                         ap_mcs_rates);
5034                                 if (rc)
5035                                         goto out;
5036
5037                                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5038                                 if (rc)
5039                                         goto out;
5040                         } else {
5041                                 int idx;
5042                                 int rate;
5043
5044                                 /* Use AP firmware specific rate command.
5045                                  */
5046                                 idx = ffs(vif->bss_conf.basic_rates);
5047                                 if (idx)
5048                                         idx--;
5049
5050                                 if (hw->conf.chandef.chan->band ==
5051                                     NL80211_BAND_2GHZ)
5052                                         rate = mwl8k_rates_24[idx].hw_value;
5053                                 else
5054                                         rate = mwl8k_rates_50[idx].hw_value;
5055
5056                                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5057                         }
5058                 }
5059         }
5060
5061         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5062                 rc = mwl8k_set_radio_preamble(hw,
5063                                 vif->bss_conf.use_short_preamble);
5064                 if (rc)
5065                         goto out;
5066         }
5067
5068         if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw)  {
5069                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5070                 if (rc)
5071                         goto out;
5072         }
5073
5074         if (vif->bss_conf.assoc && !priv->ap_fw &&
5075             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5076                         BSS_CHANGED_HT))) {
5077                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5078                 if (rc)
5079                         goto out;
5080         }
5081
5082         if (vif->bss_conf.assoc &&
5083             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5084                 /*
5085                  * Finalize the join.  Tell rx handler to process
5086                  * next beacon from our BSSID.
5087                  */
5088                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5089                 priv->capture_beacon = true;
5090         }
5091
5092 out:
5093         mwl8k_fw_unlock(hw);
5094 }
5095
5096 static void
5097 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5098                           struct ieee80211_bss_conf *info, u32 changed)
5099 {
5100         int rc;
5101
5102         if (mwl8k_fw_lock(hw))
5103                 return;
5104
5105         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5106                 rc = mwl8k_set_radio_preamble(hw,
5107                                 vif->bss_conf.use_short_preamble);
5108                 if (rc)
5109                         goto out;
5110         }
5111
5112         if (changed & BSS_CHANGED_BASIC_RATES) {
5113                 int idx;
5114                 int rate;
5115
5116                 /*
5117                  * Use lowest supported basic rate for multicasts
5118                  * and management frames (such as probe responses --
5119                  * beacons will always go out at 1 Mb/s).
5120                  */
5121                 idx = ffs(vif->bss_conf.basic_rates);
5122                 if (idx)
5123                         idx--;
5124
5125                 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
5126                         rate = mwl8k_rates_24[idx].hw_value;
5127                 else
5128                         rate = mwl8k_rates_50[idx].hw_value;
5129
5130                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5131         }
5132
5133         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5134                 struct sk_buff *skb;
5135
5136                 skb = ieee80211_beacon_get(hw, vif);
5137                 if (skb != NULL) {
5138                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5139                         kfree_skb(skb);
5140                 }
5141         }
5142
5143         if (changed & BSS_CHANGED_BEACON_ENABLED)
5144                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5145
5146 out:
5147         mwl8k_fw_unlock(hw);
5148 }
5149
5150 static void
5151 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5152                        struct ieee80211_bss_conf *info, u32 changed)
5153 {
5154         if (vif->type == NL80211_IFTYPE_STATION)
5155                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5156         if (vif->type == NL80211_IFTYPE_AP)
5157                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5158 }
5159
5160 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5161                                    struct netdev_hw_addr_list *mc_list)
5162 {
5163         struct mwl8k_cmd_pkt *cmd;
5164
5165         /*
5166          * Synthesize and return a command packet that programs the
5167          * hardware multicast address filter.  At this point we don't
5168          * know whether FIF_ALLMULTI is being requested, but if it is,
5169          * we'll end up throwing this packet away and creating a new
5170          * one in mwl8k_configure_filter().
5171          */
5172         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5173
5174         return (unsigned long)cmd;
5175 }
5176
5177 static int
5178 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5179                                unsigned int changed_flags,
5180                                unsigned int *total_flags)
5181 {
5182         struct mwl8k_priv *priv = hw->priv;
5183
5184         /*
5185          * Hardware sniffer mode is mutually exclusive with STA
5186          * operation, so refuse to enable sniffer mode if a STA
5187          * interface is active.
5188          */
5189         if (!list_empty(&priv->vif_list)) {
5190                 if (net_ratelimit())
5191                         wiphy_info(hw->wiphy,
5192                                    "not enabling sniffer mode because STA interface is active\n");
5193                 return 0;
5194         }
5195
5196         if (!priv->sniffer_enabled) {
5197                 if (mwl8k_cmd_enable_sniffer(hw, 1))
5198                         return 0;
5199                 priv->sniffer_enabled = true;
5200         }
5201
5202         *total_flags &= FIF_ALLMULTI |
5203                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5204                         FIF_OTHER_BSS;
5205
5206         return 1;
5207 }
5208
5209 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5210 {
5211         if (!list_empty(&priv->vif_list))
5212                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5213
5214         return NULL;
5215 }
5216
5217 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5218                                    unsigned int changed_flags,
5219                                    unsigned int *total_flags,
5220                                    u64 multicast)
5221 {
5222         struct mwl8k_priv *priv = hw->priv;
5223         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5224
5225         /*
5226          * AP firmware doesn't allow fine-grained control over
5227          * the receive filter.
5228          */
5229         if (priv->ap_fw) {
5230                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5231                 kfree(cmd);
5232                 return;
5233         }
5234
5235         /*
5236          * Enable hardware sniffer mode if FIF_CONTROL or
5237          * FIF_OTHER_BSS is requested.
5238          */
5239         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5240             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5241                 kfree(cmd);
5242                 return;
5243         }
5244
5245         /* Clear unsupported feature flags */
5246         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5247
5248         if (mwl8k_fw_lock(hw)) {
5249                 kfree(cmd);
5250                 return;
5251         }
5252
5253         if (priv->sniffer_enabled) {
5254                 mwl8k_cmd_enable_sniffer(hw, 0);
5255                 priv->sniffer_enabled = false;
5256         }
5257
5258         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5259                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5260                         /*
5261                          * Disable the BSS filter.
5262                          */
5263                         mwl8k_cmd_set_pre_scan(hw);
5264                 } else {
5265                         struct mwl8k_vif *mwl8k_vif;
5266                         const u8 *bssid;
5267
5268                         /*
5269                          * Enable the BSS filter.
5270                          *
5271                          * If there is an active STA interface, use that
5272                          * interface's BSSID, otherwise use a dummy one
5273                          * (where the OUI part needs to be nonzero for
5274                          * the BSSID to be accepted by POST_SCAN).
5275                          */
5276                         mwl8k_vif = mwl8k_first_vif(priv);
5277                         if (mwl8k_vif != NULL)
5278                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
5279                         else
5280                                 bssid = "\x01\x00\x00\x00\x00\x00";
5281
5282                         mwl8k_cmd_set_post_scan(hw, bssid);
5283                 }
5284         }
5285
5286         /*
5287          * If FIF_ALLMULTI is being requested, throw away the command
5288          * packet that ->prepare_multicast() built and replace it with
5289          * a command packet that enables reception of all multicast
5290          * packets.
5291          */
5292         if (*total_flags & FIF_ALLMULTI) {
5293                 kfree(cmd);
5294                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5295         }
5296
5297         if (cmd != NULL) {
5298                 mwl8k_post_cmd(hw, cmd);
5299                 kfree(cmd);
5300         }
5301
5302         mwl8k_fw_unlock(hw);
5303 }
5304
5305 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5306 {
5307         return mwl8k_cmd_set_rts_threshold(hw, value);
5308 }
5309
5310 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5311                             struct ieee80211_vif *vif,
5312                             struct ieee80211_sta *sta)
5313 {
5314         struct mwl8k_priv *priv = hw->priv;
5315
5316         if (priv->ap_fw)
5317                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5318         else
5319                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5320 }
5321
5322 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5323                          struct ieee80211_vif *vif,
5324                          struct ieee80211_sta *sta)
5325 {
5326         struct mwl8k_priv *priv = hw->priv;
5327         int ret;
5328         int i;
5329         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5330         struct ieee80211_key_conf *key;
5331
5332         if (!priv->ap_fw) {
5333                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5334                 if (ret >= 0) {
5335                         MWL8K_STA(sta)->peer_id = ret;
5336                         if (sta->ht_cap.ht_supported)
5337                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5338                         ret = 0;
5339                 }
5340
5341         } else {
5342                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5343         }
5344
5345         for (i = 0; i < NUM_WEP_KEYS; i++) {
5346                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5347                 if (mwl8k_vif->wep_key_conf[i].enabled)
5348                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5349         }
5350         return ret;
5351 }
5352
5353 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5354                          struct ieee80211_vif *vif, u16 queue,
5355                          const struct ieee80211_tx_queue_params *params)
5356 {
5357         struct mwl8k_priv *priv = hw->priv;
5358         int rc;
5359
5360         rc = mwl8k_fw_lock(hw);
5361         if (!rc) {
5362                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5363                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5364
5365                 if (!priv->wmm_enabled)
5366                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5367
5368                 if (!rc) {
5369                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5370                         rc = mwl8k_cmd_set_edca_params(hw, q,
5371                                                        params->cw_min,
5372                                                        params->cw_max,
5373                                                        params->aifs,
5374                                                        params->txop);
5375                 }
5376
5377                 mwl8k_fw_unlock(hw);
5378         }
5379
5380         return rc;
5381 }
5382
5383 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5384                            struct ieee80211_low_level_stats *stats)
5385 {
5386         return mwl8k_cmd_get_stat(hw, stats);
5387 }
5388
5389 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5390                                 struct survey_info *survey)
5391 {
5392         struct mwl8k_priv *priv = hw->priv;
5393         struct ieee80211_conf *conf = &hw->conf;
5394         struct ieee80211_supported_band *sband;
5395
5396         if (priv->ap_fw) {
5397                 sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
5398
5399                 if (sband && idx >= sband->n_channels) {
5400                         idx -= sband->n_channels;
5401                         sband = NULL;
5402                 }
5403
5404                 if (!sband)
5405                         sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
5406
5407                 if (!sband || idx >= sband->n_channels)
5408                         return -ENOENT;
5409
5410                 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5411                 survey->channel = &sband->channels[idx];
5412
5413                 return 0;
5414         }
5415
5416         if (idx != 0)
5417                 return -ENOENT;
5418
5419         survey->channel = conf->chandef.chan;
5420         survey->filled = SURVEY_INFO_NOISE_DBM;
5421         survey->noise = priv->noise;
5422
5423         return 0;
5424 }
5425
5426 #define MAX_AMPDU_ATTEMPTS 5
5427
5428 static int
5429 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5430                    struct ieee80211_ampdu_params *params)
5431 {
5432         struct ieee80211_sta *sta = params->sta;
5433         enum ieee80211_ampdu_mlme_action action = params->action;
5434         u16 tid = params->tid;
5435         u16 *ssn = &params->ssn;
5436         u8 buf_size = params->buf_size;
5437         int i, rc = 0;
5438         struct mwl8k_priv *priv = hw->priv;
5439         struct mwl8k_ampdu_stream *stream;
5440         u8 *addr = sta->addr, idx;
5441         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5442
5443         if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5444                 return -ENOTSUPP;
5445
5446         spin_lock(&priv->stream_lock);
5447         stream = mwl8k_lookup_stream(hw, addr, tid);
5448
5449         switch (action) {
5450         case IEEE80211_AMPDU_RX_START:
5451         case IEEE80211_AMPDU_RX_STOP:
5452                 break;
5453         case IEEE80211_AMPDU_TX_START:
5454                 /* By the time we get here the hw queues may contain outgoing
5455                  * packets for this RA/TID that are not part of this BA
5456                  * session.  The hw will assign sequence numbers to these
5457                  * packets as they go out.  So if we query the hw for its next
5458                  * sequence number and use that for the SSN here, it may end up
5459                  * being wrong, which will lead to sequence number mismatch at
5460                  * the recipient.  To avoid this, we reset the sequence number
5461                  * to O for the first MPDU in this BA stream.
5462                  */
5463                 *ssn = 0;
5464                 if (stream == NULL) {
5465                         /* This means that somebody outside this driver called
5466                          * ieee80211_start_tx_ba_session.  This is unexpected
5467                          * because we do our own rate control.  Just warn and
5468                          * move on.
5469                          */
5470                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5471                                    "Proceeding anyway.\n", __func__);
5472                         stream = mwl8k_add_stream(hw, sta, tid);
5473                 }
5474                 if (stream == NULL) {
5475                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5476                         rc = -EBUSY;
5477                         break;
5478                 }
5479                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5480
5481                 /* Release the lock before we do the time consuming stuff */
5482                 spin_unlock(&priv->stream_lock);
5483                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5484
5485                         /* Check if link is still valid */
5486                         if (!sta_info->is_ampdu_allowed) {
5487                                 spin_lock(&priv->stream_lock);
5488                                 mwl8k_remove_stream(hw, stream);
5489                                 spin_unlock(&priv->stream_lock);
5490                                 return -EBUSY;
5491                         }
5492
5493                         rc = mwl8k_check_ba(hw, stream, vif);
5494
5495                         /* If HW restart is in progress mwl8k_post_cmd will
5496                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5497                          * such cases
5498                          */
5499                         if (!rc || rc == -EBUSY)
5500                                 break;
5501                         /*
5502                          * HW queues take time to be flushed, give them
5503                          * sufficient time
5504                          */
5505
5506                         msleep(1000);
5507                 }
5508                 spin_lock(&priv->stream_lock);
5509                 if (rc) {
5510                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5511                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5512                         mwl8k_remove_stream(hw, stream);
5513                         rc = -EBUSY;
5514                         break;
5515                 }
5516                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5517                 break;
5518         case IEEE80211_AMPDU_TX_STOP_CONT:
5519         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5520         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5521                 if (stream) {
5522                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5523                                 idx = stream->idx;
5524                                 spin_unlock(&priv->stream_lock);
5525                                 mwl8k_destroy_ba(hw, idx);
5526                                 spin_lock(&priv->stream_lock);
5527                         }
5528                         mwl8k_remove_stream(hw, stream);
5529                 }
5530                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5531                 break;
5532         case IEEE80211_AMPDU_TX_OPERATIONAL:
5533                 BUG_ON(stream == NULL);
5534                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5535                 spin_unlock(&priv->stream_lock);
5536                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5537                 spin_lock(&priv->stream_lock);
5538                 if (!rc)
5539                         stream->state = AMPDU_STREAM_ACTIVE;
5540                 else {
5541                         idx = stream->idx;
5542                         spin_unlock(&priv->stream_lock);
5543                         mwl8k_destroy_ba(hw, idx);
5544                         spin_lock(&priv->stream_lock);
5545                         wiphy_debug(hw->wiphy,
5546                                 "Failed adding stream for sta %pM tid %d\n",
5547                                 addr, tid);
5548                         mwl8k_remove_stream(hw, stream);
5549                 }
5550                 break;
5551
5552         default:
5553                 rc = -ENOTSUPP;
5554         }
5555
5556         spin_unlock(&priv->stream_lock);
5557         return rc;
5558 }
5559
5560 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5561                                 struct ieee80211_vif *vif,
5562                                 const u8 *mac_addr)
5563 {
5564         struct mwl8k_priv *priv = hw->priv;
5565         u8 tmp;
5566
5567         if (!priv->ap_fw)
5568                 return;
5569
5570         /* clear all stats */
5571         priv->channel_time = 0;
5572         ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5573         ioread32(priv->regs + NOK_CCA_CNT_REG);
5574         mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5575
5576         priv->sw_scan_start = true;
5577 }
5578
5579 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5580                                    struct ieee80211_vif *vif)
5581 {
5582         struct mwl8k_priv *priv = hw->priv;
5583         u8 tmp;
5584
5585         if (!priv->ap_fw)
5586                 return;
5587
5588         priv->sw_scan_start = false;
5589
5590         /* clear all stats */
5591         priv->channel_time = 0;
5592         ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5593         ioread32(priv->regs + NOK_CCA_CNT_REG);
5594         mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5595 }
5596
5597 static const struct ieee80211_ops mwl8k_ops = {
5598         .tx                     = mwl8k_tx,
5599         .start                  = mwl8k_start,
5600         .stop                   = mwl8k_stop,
5601         .add_interface          = mwl8k_add_interface,
5602         .remove_interface       = mwl8k_remove_interface,
5603         .config                 = mwl8k_config,
5604         .bss_info_changed       = mwl8k_bss_info_changed,
5605         .prepare_multicast      = mwl8k_prepare_multicast,
5606         .configure_filter       = mwl8k_configure_filter,
5607         .set_key                = mwl8k_set_key,
5608         .set_rts_threshold      = mwl8k_set_rts_threshold,
5609         .sta_add                = mwl8k_sta_add,
5610         .sta_remove             = mwl8k_sta_remove,
5611         .conf_tx                = mwl8k_conf_tx,
5612         .get_stats              = mwl8k_get_stats,
5613         .get_survey             = mwl8k_get_survey,
5614         .ampdu_action           = mwl8k_ampdu_action,
5615         .sw_scan_start          = mwl8k_sw_scan_start,
5616         .sw_scan_complete       = mwl8k_sw_scan_complete,
5617 };
5618
5619 static void mwl8k_finalize_join_worker(struct work_struct *work)
5620 {
5621         struct mwl8k_priv *priv =
5622                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5623         struct sk_buff *skb = priv->beacon_skb;
5624         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5625         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5626         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5627                                          mgmt->u.beacon.variable, len);
5628         int dtim_period = 1;
5629
5630         if (tim && tim[1] >= 2)
5631                 dtim_period = tim[3];
5632
5633         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5634
5635         dev_kfree_skb(skb);
5636         priv->beacon_skb = NULL;
5637 }
5638
5639 enum {
5640         MWL8363 = 0,
5641         MWL8687,
5642         MWL8366,
5643         MWL8764,
5644 };
5645
5646 #define MWL8K_8366_AP_FW_API 3
5647 #define _MWL8K_8366_AP_FW(api) "/*(DEBLOBBED)*/"
5648 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5649
5650 #define MWL8K_8764_AP_FW_API 1
5651 #define _MWL8K_8764_AP_FW(api) "/*(DEBLOBBED)*/"
5652 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5653
5654 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5655         [MWL8363] = {
5656                 .part_name      = "88w8363",
5657                 .helper_image   = "/*(DEBLOBBED)*/",
5658                 .fw_image_sta   = "/*(DEBLOBBED)*/",
5659         },
5660         [MWL8687] = {
5661                 .part_name      = "88w8687",
5662                 .helper_image   = "/*(DEBLOBBED)*/",
5663                 .fw_image_sta   = "/*(DEBLOBBED)*/",
5664         },
5665         [MWL8366] = {
5666                 .part_name      = "88w8366",
5667                 .helper_image   = "/*(DEBLOBBED)*/",
5668                 .fw_image_sta   = "/*(DEBLOBBED)*/",
5669                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5670                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5671                 .ap_rxd_ops     = &rxd_ap_ops,
5672         },
5673         [MWL8764] = {
5674                 .part_name      = "88w8764",
5675                 .fw_image_ap    = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5676                 .fw_api_ap      = MWL8K_8764_AP_FW_API,
5677                 .ap_rxd_ops     = &rxd_ap_ops,
5678         },
5679 };
5680
5681 /*(DEBLOBBED)*/
5682
5683 static const struct pci_device_id mwl8k_pci_id_table[] = {
5684         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5685         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5686         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5687         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5688         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5689         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5690         { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5691         { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5692         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5693         { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5694         { },
5695 };
5696 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5697
5698 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5699 {
5700         int rc;
5701         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5702                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5703                priv->fw_pref, priv->fw_alt);
5704         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5705         if (rc) {
5706                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5707                        pci_name(priv->pdev), priv->fw_alt);
5708                 return rc;
5709         }
5710         return 0;
5711 }
5712
5713 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5714 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5715 {
5716         struct mwl8k_priv *priv = context;
5717         struct mwl8k_device_info *di = priv->device_info;
5718         int rc;
5719
5720         switch (priv->fw_state) {
5721         case FW_STATE_INIT:
5722                 if (!fw) {
5723                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5724                                pci_name(priv->pdev), di->helper_image);
5725                         goto fail;
5726                 }
5727                 priv->fw_helper = fw;
5728                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5729                                       true);
5730                 if (rc && priv->fw_alt) {
5731                         rc = mwl8k_request_alt_fw(priv);
5732                         if (rc)
5733                                 goto fail;
5734                         priv->fw_state = FW_STATE_LOADING_ALT;
5735                 } else if (rc)
5736                         goto fail;
5737                 else
5738                         priv->fw_state = FW_STATE_LOADING_PREF;
5739                 break;
5740
5741         case FW_STATE_LOADING_PREF:
5742                 if (!fw) {
5743                         if (priv->fw_alt) {
5744                                 rc = mwl8k_request_alt_fw(priv);
5745                                 if (rc)
5746                                         goto fail;
5747                                 priv->fw_state = FW_STATE_LOADING_ALT;
5748                         } else
5749                                 goto fail;
5750                 } else {
5751                         priv->fw_ucode = fw;
5752                         rc = mwl8k_firmware_load_success(priv);
5753                         if (rc)
5754                                 goto fail;
5755                         else
5756                                 complete(&priv->firmware_loading_complete);
5757                 }
5758                 break;
5759
5760         case FW_STATE_LOADING_ALT:
5761                 if (!fw) {
5762                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5763                                pci_name(priv->pdev), di->helper_image);
5764                         goto fail;
5765                 }
5766                 priv->fw_ucode = fw;
5767                 rc = mwl8k_firmware_load_success(priv);
5768                 if (rc)
5769                         goto fail;
5770                 else
5771                         complete(&priv->firmware_loading_complete);
5772                 break;
5773
5774         default:
5775                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5776                        MWL8K_NAME, priv->fw_state);
5777                 BUG_ON(1);
5778         }
5779
5780         return;
5781
5782 fail:
5783         priv->fw_state = FW_STATE_ERROR;
5784         complete(&priv->firmware_loading_complete);
5785         mwl8k_release_firmware(priv);
5786         device_release_driver(&priv->pdev->dev);
5787 }
5788
5789 #define MAX_RESTART_ATTEMPTS 1
5790 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5791                                bool nowait)
5792 {
5793         struct mwl8k_priv *priv = hw->priv;
5794         int rc;
5795         int count = MAX_RESTART_ATTEMPTS;
5796
5797 retry:
5798         /* Reset firmware and hardware */
5799         mwl8k_hw_reset(priv);
5800
5801         /* Ask userland hotplug daemon for the device firmware */
5802         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5803         if (rc) {
5804                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5805                 return rc;
5806         }
5807
5808         if (nowait)
5809                 return rc;
5810
5811         /* Load firmware into hardware */
5812         rc = mwl8k_load_firmware(hw);
5813         if (rc)
5814                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5815
5816         /* Reclaim memory once firmware is successfully loaded */
5817         mwl8k_release_firmware(priv);
5818
5819         if (rc && count) {
5820                 /* FW did not start successfully;
5821                  * lets try one more time
5822                  */
5823                 count--;
5824                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5825                 msleep(20);
5826                 goto retry;
5827         }
5828
5829         return rc;
5830 }
5831
5832 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5833 {
5834         struct mwl8k_priv *priv = hw->priv;
5835         int rc = 0;
5836         int i;
5837
5838         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5839                 rc = mwl8k_txq_init(hw, i);
5840                 if (rc)
5841                         break;
5842                 if (priv->ap_fw)
5843                         iowrite32(priv->txq[i].txd_dma,
5844                                   priv->sram + priv->txq_offset[i]);
5845         }
5846         return rc;
5847 }
5848
5849 /* initialize hw after successfully loading a firmware image */
5850 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5851 {
5852         struct mwl8k_priv *priv = hw->priv;
5853         int rc = 0;
5854         int i;
5855
5856         if (priv->ap_fw) {
5857                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5858                 if (priv->rxd_ops == NULL) {
5859                         wiphy_err(hw->wiphy,
5860                                   "Driver does not have AP firmware image support for this hardware\n");
5861                         rc = -ENOENT;
5862                         goto err_stop_firmware;
5863                 }
5864         } else {
5865                 priv->rxd_ops = &rxd_sta_ops;
5866         }
5867
5868         priv->sniffer_enabled = false;
5869         priv->wmm_enabled = false;
5870         priv->pending_tx_pkts = 0;
5871         atomic_set(&priv->watchdog_event_pending, 0);
5872
5873         rc = mwl8k_rxq_init(hw, 0);
5874         if (rc)
5875                 goto err_stop_firmware;
5876         rxq_refill(hw, 0, INT_MAX);
5877
5878         /* For the sta firmware, we need to know the dma addresses of tx queues
5879          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5880          * prior to issuing this command.  But for the AP case, we learn the
5881          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5882          * case we must initialize the tx queues after.
5883          */
5884         priv->num_ampdu_queues = 0;
5885         if (!priv->ap_fw) {
5886                 rc = mwl8k_init_txqs(hw);
5887                 if (rc)
5888                         goto err_free_queues;
5889         }
5890
5891         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5892         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5893         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5894                   MWL8K_A2H_INT_BA_WATCHDOG,
5895                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5896         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5897                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5898
5899         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5900                          IRQF_SHARED, MWL8K_NAME, hw);
5901         if (rc) {
5902                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5903                 goto err_free_queues;
5904         }
5905
5906         /*
5907          * When hw restart is requested,
5908          * mac80211 will take care of clearing
5909          * the ampdu streams, so do not clear
5910          * the ampdu state here
5911          */
5912         if (!priv->hw_restart_in_progress)
5913                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5914
5915         /*
5916          * Temporarily enable interrupts.  Initial firmware host
5917          * commands use interrupts and avoid polling.  Disable
5918          * interrupts when done.
5919          */
5920         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5921
5922         /* Get config data, mac addrs etc */
5923         if (priv->ap_fw) {
5924                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5925                 if (!rc)
5926                         rc = mwl8k_init_txqs(hw);
5927                 if (!rc)
5928                         rc = mwl8k_cmd_set_hw_spec(hw);
5929         } else {
5930                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5931         }
5932         if (rc) {
5933                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5934                 goto err_free_irq;
5935         }
5936
5937         /* Turn radio off */
5938         rc = mwl8k_cmd_radio_disable(hw);
5939         if (rc) {
5940                 wiphy_err(hw->wiphy, "Cannot disable\n");
5941                 goto err_free_irq;
5942         }
5943
5944         /* Clear MAC address */
5945         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5946         if (rc) {
5947                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5948                 goto err_free_irq;
5949         }
5950
5951         /* Configure Antennas */
5952         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5953         if (rc)
5954                 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5955         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5956         if (rc)
5957                 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5958
5959
5960         /* Disable interrupts */
5961         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5962         free_irq(priv->pdev->irq, hw);
5963
5964         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5965                    priv->device_info->part_name,
5966                    priv->hw_rev, hw->wiphy->perm_addr,
5967                    priv->ap_fw ? "AP" : "STA",
5968                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5969                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5970
5971         return 0;
5972
5973 err_free_irq:
5974         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5975         free_irq(priv->pdev->irq, hw);
5976
5977 err_free_queues:
5978         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5979                 mwl8k_txq_deinit(hw, i);
5980         mwl8k_rxq_deinit(hw, 0);
5981
5982 err_stop_firmware:
5983         mwl8k_hw_reset(priv);
5984
5985         return rc;
5986 }
5987
5988 /*
5989  * invoke mwl8k_reload_firmware to change the firmware image after the device
5990  * has already been registered
5991  */
5992 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5993 {
5994         int i, rc = 0;
5995         struct mwl8k_priv *priv = hw->priv;
5996         struct mwl8k_vif *vif, *tmp_vif;
5997
5998         mwl8k_stop(hw);
5999         mwl8k_rxq_deinit(hw, 0);
6000
6001         /*
6002          * All the existing interfaces are re-added by the ieee80211_reconfig;
6003          * which means driver should remove existing interfaces before calling
6004          * ieee80211_restart_hw
6005          */
6006         if (priv->hw_restart_in_progress)
6007                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6008                         mwl8k_remove_vif(priv, vif);
6009
6010         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6011                 mwl8k_txq_deinit(hw, i);
6012
6013         rc = mwl8k_init_firmware(hw, fw_image, false);
6014         if (rc)
6015                 goto fail;
6016
6017         rc = mwl8k_probe_hw(hw);
6018         if (rc)
6019                 goto fail;
6020
6021         if (priv->hw_restart_in_progress)
6022                 return rc;
6023
6024         rc = mwl8k_start(hw);
6025         if (rc)
6026                 goto fail;
6027
6028         rc = mwl8k_config(hw, ~0);
6029         if (rc)
6030                 goto fail;
6031
6032         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6033                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
6034                 if (rc)
6035                         goto fail;
6036         }
6037
6038         return rc;
6039
6040 fail:
6041         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6042         return rc;
6043 }
6044
6045 static const struct ieee80211_iface_limit ap_if_limits[] = {
6046         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
6047         { .max = 1,     .types = BIT(NL80211_IFTYPE_STATION) },
6048 };
6049
6050 static const struct ieee80211_iface_combination ap_if_comb = {
6051         .limits = ap_if_limits,
6052         .n_limits = ARRAY_SIZE(ap_if_limits),
6053         .max_interfaces = 8,
6054         .num_different_channels = 1,
6055 };
6056
6057
6058 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6059 {
6060         struct ieee80211_hw *hw = priv->hw;
6061         int i, rc;
6062
6063         rc = mwl8k_load_firmware(hw);
6064         mwl8k_release_firmware(priv);
6065         if (rc) {
6066                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6067                 return rc;
6068         }
6069
6070         /*
6071          * Extra headroom is the size of the required DMA header
6072          * minus the size of the smallest 802.11 frame (CTS frame).
6073          */
6074         hw->extra_tx_headroom =
6075                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6076
6077         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6078
6079         hw->queues = MWL8K_TX_WMM_QUEUES;
6080
6081         /* Set rssi values to dBm */
6082         ieee80211_hw_set(hw, SIGNAL_DBM);
6083         ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6084
6085         /*
6086          * Ask mac80211 to not to trigger PS mode
6087          * based on PM bit of incoming frames.
6088          */
6089         if (priv->ap_fw)
6090                 ieee80211_hw_set(hw, AP_LINK_PS);
6091
6092         hw->vif_data_size = sizeof(struct mwl8k_vif);
6093         hw->sta_data_size = sizeof(struct mwl8k_sta);
6094
6095         priv->macids_used = 0;
6096         INIT_LIST_HEAD(&priv->vif_list);
6097
6098         /* Set default radio state and preamble */
6099         priv->radio_on = false;
6100         priv->radio_short_preamble = false;
6101
6102         /* Finalize join worker */
6103         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6104         /* Handle watchdog ba events */
6105         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6106         /* To reload the firmware if it crashes */
6107         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6108
6109         /* TX reclaim and RX tasklets.  */
6110         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
6111         tasklet_disable(&priv->poll_tx_task);
6112         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
6113         tasklet_disable(&priv->poll_rx_task);
6114
6115         /* Power management cookie */
6116         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
6117         if (priv->cookie == NULL)
6118                 return -ENOMEM;
6119
6120         mutex_init(&priv->fw_mutex);
6121         priv->fw_mutex_owner = NULL;
6122         priv->fw_mutex_depth = 0;
6123         priv->hostcmd_wait = NULL;
6124
6125         spin_lock_init(&priv->tx_lock);
6126
6127         spin_lock_init(&priv->stream_lock);
6128
6129         priv->tx_wait = NULL;
6130
6131         rc = mwl8k_probe_hw(hw);
6132         if (rc)
6133                 goto err_free_cookie;
6134
6135         hw->wiphy->interface_modes = 0;
6136
6137         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6138                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6139                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6140                 hw->wiphy->iface_combinations = &ap_if_comb;
6141                 hw->wiphy->n_iface_combinations = 1;
6142         }
6143
6144         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6145                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6146
6147         wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
6148
6149         rc = ieee80211_register_hw(hw);
6150         if (rc) {
6151                 wiphy_err(hw->wiphy, "Cannot register device\n");
6152                 goto err_unprobe_hw;
6153         }
6154
6155         return 0;
6156
6157 err_unprobe_hw:
6158         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6159                 mwl8k_txq_deinit(hw, i);
6160         mwl8k_rxq_deinit(hw, 0);
6161
6162 err_free_cookie:
6163         if (priv->cookie != NULL)
6164                 pci_free_consistent(priv->pdev, 4,
6165                                 priv->cookie, priv->cookie_dma);
6166
6167         return rc;
6168 }
6169 static int mwl8k_probe(struct pci_dev *pdev,
6170                                  const struct pci_device_id *id)
6171 {
6172         static int printed_version;
6173         struct ieee80211_hw *hw;
6174         struct mwl8k_priv *priv;
6175         struct mwl8k_device_info *di;
6176         int rc;
6177
6178         if (!printed_version) {
6179                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6180                 printed_version = 1;
6181         }
6182
6183
6184         rc = pci_enable_device(pdev);
6185         if (rc) {
6186                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6187                        MWL8K_NAME);
6188                 return rc;
6189         }
6190
6191         rc = pci_request_regions(pdev, MWL8K_NAME);
6192         if (rc) {
6193                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6194                        MWL8K_NAME);
6195                 goto err_disable_device;
6196         }
6197
6198         pci_set_master(pdev);
6199
6200
6201         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6202         if (hw == NULL) {
6203                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6204                 rc = -ENOMEM;
6205                 goto err_free_reg;
6206         }
6207
6208         SET_IEEE80211_DEV(hw, &pdev->dev);
6209         pci_set_drvdata(pdev, hw);
6210
6211         priv = hw->priv;
6212         priv->hw = hw;
6213         priv->pdev = pdev;
6214         priv->device_info = &mwl8k_info_tbl[id->driver_data];
6215
6216         if (id->driver_data == MWL8764)
6217                 priv->is_8764 = true;
6218
6219         priv->sram = pci_iomap(pdev, 0, 0x10000);
6220         if (priv->sram == NULL) {
6221                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6222                 rc = -EIO;
6223                 goto err_iounmap;
6224         }
6225
6226         /*
6227          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6228          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6229          */
6230         priv->regs = pci_iomap(pdev, 1, 0x10000);
6231         if (priv->regs == NULL) {
6232                 priv->regs = pci_iomap(pdev, 2, 0x10000);
6233                 if (priv->regs == NULL) {
6234                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
6235                         rc = -EIO;
6236                         goto err_iounmap;
6237                 }
6238         }
6239
6240         /*
6241          * Choose the initial fw image depending on user input.  If a second
6242          * image is available, make it the alternative image that will be
6243          * loaded if the first one fails.
6244          */
6245         init_completion(&priv->firmware_loading_complete);
6246         di = priv->device_info;
6247         if (ap_mode_default && di->fw_image_ap) {
6248                 priv->fw_pref = di->fw_image_ap;
6249                 priv->fw_alt = di->fw_image_sta;
6250         } else if (!ap_mode_default && di->fw_image_sta) {
6251                 priv->fw_pref = di->fw_image_sta;
6252                 priv->fw_alt = di->fw_image_ap;
6253         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6254                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
6255                 priv->fw_pref = di->fw_image_sta;
6256         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6257                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
6258                 priv->fw_pref = di->fw_image_ap;
6259         }
6260         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6261         if (rc)
6262                 goto err_stop_firmware;
6263
6264         priv->hw_restart_in_progress = false;
6265
6266         priv->running_bsses = 0;
6267
6268         return rc;
6269
6270 err_stop_firmware:
6271         mwl8k_hw_reset(priv);
6272
6273 err_iounmap:
6274         if (priv->regs != NULL)
6275                 pci_iounmap(pdev, priv->regs);
6276
6277         if (priv->sram != NULL)
6278                 pci_iounmap(pdev, priv->sram);
6279
6280         ieee80211_free_hw(hw);
6281
6282 err_free_reg:
6283         pci_release_regions(pdev);
6284
6285 err_disable_device:
6286         pci_disable_device(pdev);
6287
6288         return rc;
6289 }
6290
6291 static void mwl8k_remove(struct pci_dev *pdev)
6292 {
6293         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6294         struct mwl8k_priv *priv;
6295         int i;
6296
6297         if (hw == NULL)
6298                 return;
6299         priv = hw->priv;
6300
6301         wait_for_completion(&priv->firmware_loading_complete);
6302
6303         if (priv->fw_state == FW_STATE_ERROR) {
6304                 mwl8k_hw_reset(priv);
6305                 goto unmap;
6306         }
6307
6308         ieee80211_stop_queues(hw);
6309
6310         ieee80211_unregister_hw(hw);
6311
6312         /* Remove TX reclaim and RX tasklets.  */
6313         tasklet_kill(&priv->poll_tx_task);
6314         tasklet_kill(&priv->poll_rx_task);
6315
6316         /* Stop hardware */
6317         mwl8k_hw_reset(priv);
6318
6319         /* Return all skbs to mac80211 */
6320         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6321                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6322
6323         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6324                 mwl8k_txq_deinit(hw, i);
6325
6326         mwl8k_rxq_deinit(hw, 0);
6327
6328         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6329
6330 unmap:
6331         pci_iounmap(pdev, priv->regs);
6332         pci_iounmap(pdev, priv->sram);
6333         ieee80211_free_hw(hw);
6334         pci_release_regions(pdev);
6335         pci_disable_device(pdev);
6336 }
6337
6338 static struct pci_driver mwl8k_driver = {
6339         .name           = MWL8K_NAME,
6340         .id_table       = mwl8k_pci_id_table,
6341         .probe          = mwl8k_probe,
6342         .remove         = mwl8k_remove,
6343 };
6344
6345 module_pci_driver(mwl8k_driver);
6346
6347 MODULE_DESCRIPTION(MWL8K_DESC);
6348 MODULE_VERSION(MWL8K_VERSION);
6349 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6350 MODULE_LICENSE("GPL");