drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.13"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 /* txpriorities are mapped with hw queues.
 105  * Each hw queue has a txpriority.
 106  */
 107 #define TOTAL_HW_TX_QUEUES      8
 108
 109 /* Each HW queue can have one AMPDU stream.
 110  * But, because one of the hw queue is reserved,
 111  * maximum AMPDU queues that can be created are
 112  * one short of total tx queues.
 113  */
 114 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
 115
 116 struct rxd_ops {
 117         int rxd_size;
 118         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 119         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 120         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 121                            __le16 *qos, s8 *noise);
 122 };
 123
 124 struct mwl8k_device_info {
 125         char *part_name;
 126         char *helper_image;
 127         char *fw_image_sta;
 128         char *fw_image_ap;
 129         struct rxd_ops *ap_rxd_ops;
 130         u32 fw_api_ap;
 131 };
 132
 133 struct mwl8k_rx_queue {
 134         int rxd_count;
 135
 136         /* hw receives here */
 137         int head;
 138
 139         /* refill descs here */
 140         int tail;
 141
 142         void *rxd;
 143         dma_addr_t rxd_dma;
 144         struct {
 145                 struct sk_buff *skb;
 146                 DEFINE_DMA_UNMAP_ADDR(dma);
 147         } *buf;
 148 };
 149
 150 struct mwl8k_tx_queue {
 151         /* hw transmits here */
 152         int head;
 153
 154         /* sw appends here */
 155         int tail;
 156
 157         unsigned int len;
 158         struct mwl8k_tx_desc *txd;
 159         dma_addr_t txd_dma;
 160         struct sk_buff **skb;
 161 };
 162
 163 enum {
 164         AMPDU_NO_STREAM,
 165         AMPDU_STREAM_NEW,
 166         AMPDU_STREAM_IN_PROGRESS,
 167         AMPDU_STREAM_ACTIVE,
 168 };
 169
 170 struct mwl8k_ampdu_stream {
 171         struct ieee80211_sta *sta;
 172         u8 tid;
 173         u8 state;
 174         u8 idx;
 175 };
 176
 177 struct mwl8k_priv {
 178         struct ieee80211_hw *hw;
 179         struct pci_dev *pdev;
 180         int irq;
 181
 182         struct mwl8k_device_info *device_info;
 183
 184         void __iomem *sram;
 185         void __iomem *regs;
 186
 187         /* firmware */
 188         const struct firmware *fw_helper;
 189         const struct firmware *fw_ucode;
 190
 191         /* hardware/firmware parameters */
 192         bool ap_fw;
 193         struct rxd_ops *rxd_ops;
 194         struct ieee80211_supported_band band_24;
 195         struct ieee80211_channel channels_24[14];
 196         struct ieee80211_rate rates_24[14];
 197         struct ieee80211_supported_band band_50;
 198         struct ieee80211_channel channels_50[4];
 199         struct ieee80211_rate rates_50[9];
 200         u32 ap_macids_supported;
 201         u32 sta_macids_supported;
 202
 203         /* Ampdu stream information */
 204         u8 num_ampdu_queues;
 205         spinlock_t stream_lock;
 206         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 207         struct work_struct watchdog_ba_handle;
 208
 209         /* firmware access */
 210         struct mutex fw_mutex;
 211         struct task_struct *fw_mutex_owner;
 212         struct task_struct *hw_restart_owner;
 213         int fw_mutex_depth;
 214         struct completion *hostcmd_wait;
 215
 216         atomic_t watchdog_event_pending;
 217
 218         /* lock held over TX and TX reap */
 219         spinlock_t tx_lock;
 220
 221         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 222         struct completion *tx_wait;
 223
 224         /* List of interfaces.  */
 225         u32 macids_used;
 226         struct list_head vif_list;
 227
 228         /* power management status cookie from firmware */
 229         u32 *cookie;
 230         dma_addr_t cookie_dma;
 231
 232         u16 num_mcaddrs;
 233         u8 hw_rev;
 234         u32 fw_rev;
 235         u32 caps;
 236
 237         /*
 238          * Running count of TX packets in flight, to avoid
 239          * iterating over the transmit rings each time.
 240          */
 241         int pending_tx_pkts;
 242
 243         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 244         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 245         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 246
 247         bool radio_on;
 248         bool radio_short_preamble;
 249         bool sniffer_enabled;
 250         bool wmm_enabled;
 251
 252         /* XXX need to convert this to handle multiple interfaces */
 253         bool capture_beacon;
 254         u8 capture_bssid[ETH_ALEN];
 255         struct sk_buff *beacon_skb;
 256
 257         /*
 258          * This FJ worker has to be global as it is scheduled from the
 259          * RX handler.  At this point we don't know which interface it
 260          * belongs to until the list of bssids waiting to complete join
 261          * is checked.
 262          */
 263         struct work_struct finalize_join_worker;
 264
 265         /* Tasklet to perform TX reclaim.  */
 266         struct tasklet_struct poll_tx_task;
 267
 268         /* Tasklet to perform RX.  */
 269         struct tasklet_struct poll_rx_task;
 270
 271         /* Most recently reported noise in dBm */
 272         s8 noise;
 273
 274         /*
 275          * preserve the queue configurations so they can be restored if/when
 276          * the firmware image is swapped.
 277          */
 278         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 279
 280         /* To perform the task of reloading the firmware */
 281         struct work_struct fw_reload;
 282         bool hw_restart_in_progress;
 283
 284         /* async firmware loading state */
 285         unsigned fw_state;
 286         char *fw_pref;
 287         char *fw_alt;
 288         bool is_8764;
 289         struct completion firmware_loading_complete;
 290
 291         /* bitmap of running BSSes */
 292         u32 running_bsses;
 293 };
 294
 295 #define MAX_WEP_KEY_LEN         13
 296 #define NUM_WEP_KEYS            4
 297
 298 /* Per interface specific private data */
 299 struct mwl8k_vif {
 300         struct list_head list;
 301         struct ieee80211_vif *vif;
 302
 303         /* Firmware macid for this vif.  */
 304         int macid;
 305
 306         /* Non AMPDU sequence number assigned by driver.  */
 307         u16 seqno;
 308
 309         /* Saved WEP keys */
 310         struct {
 311                 u8 enabled;
 312                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 313         } wep_key_conf[NUM_WEP_KEYS];
 314
 315         /* BSSID */
 316         u8 bssid[ETH_ALEN];
 317
 318         /* A flag to indicate is HW crypto is enabled for this bssid */
 319         bool is_hw_crypto_enabled;
 320 };
 321 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 322 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 323
 324 struct tx_traffic_info {
 325         u32 start_time;
 326         u32 pkts;
 327 };
 328
 329 #define MWL8K_MAX_TID 8
 330 struct mwl8k_sta {
 331         /* Index into station database. Returned by UPDATE_STADB.  */
 332         u8 peer_id;
 333         u8 is_ampdu_allowed;
 334         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 335 };
 336 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 337
 338 static const struct ieee80211_channel mwl8k_channels_24[] = {
 339         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
 340         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
 341         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
 342         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
 343         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
 344         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
 345         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
 346         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
 347         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
 348         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
 349         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
 350         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
 351         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
 352         { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
 353 };
 354
 355 static const struct ieee80211_rate mwl8k_rates_24[] = {
 356         { .bitrate = 10, .hw_value = 2, },
 357         { .bitrate = 20, .hw_value = 4, },
 358         { .bitrate = 55, .hw_value = 11, },
 359         { .bitrate = 110, .hw_value = 22, },
 360         { .bitrate = 220, .hw_value = 44, },
 361         { .bitrate = 60, .hw_value = 12, },
 362         { .bitrate = 90, .hw_value = 18, },
 363         { .bitrate = 120, .hw_value = 24, },
 364         { .bitrate = 180, .hw_value = 36, },
 365         { .bitrate = 240, .hw_value = 48, },
 366         { .bitrate = 360, .hw_value = 72, },
 367         { .bitrate = 480, .hw_value = 96, },
 368         { .bitrate = 540, .hw_value = 108, },
 369         { .bitrate = 720, .hw_value = 144, },
 370 };
 371
 372 static const struct ieee80211_channel mwl8k_channels_50[] = {
 373         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
 374         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
 375         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
 376         { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
 377 };
 378
 379 static const struct ieee80211_rate mwl8k_rates_50[] = {
 380         { .bitrate = 60, .hw_value = 12, },
 381         { .bitrate = 90, .hw_value = 18, },
 382         { .bitrate = 120, .hw_value = 24, },
 383         { .bitrate = 180, .hw_value = 36, },
 384         { .bitrate = 240, .hw_value = 48, },
 385         { .bitrate = 360, .hw_value = 72, },
 386         { .bitrate = 480, .hw_value = 96, },
 387         { .bitrate = 540, .hw_value = 108, },
 388         { .bitrate = 720, .hw_value = 144, },
 389 };
 390
 391 /* Set or get info from Firmware */
 392 #define MWL8K_CMD_GET                   0x0000
 393 #define MWL8K_CMD_SET                   0x0001
 394 #define MWL8K_CMD_SET_LIST              0x0002
 395
 396 /* Firmware command codes */
 397 #define MWL8K_CMD_CODE_DNLD             0x0001
 398 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 399 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 400 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 401 #define MWL8K_CMD_GET_STAT              0x0014
 402 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 403 #define MWL8K_CMD_RF_TX_POWER           0x001e
 404 #define MWL8K_CMD_TX_POWER              0x001f
 405 #define MWL8K_CMD_RF_ANTENNA            0x0020
 406 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 407 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 408 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 409 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 410 #define MWL8K_CMD_SET_AID               0x010d
 411 #define MWL8K_CMD_SET_RATE              0x0110
 412 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 413 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 414 #define MWL8K_CMD_SET_SLOT              0x0114
 415 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 416 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 417 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 418 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 419 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 420 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 421 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 422 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 423 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 424 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 425 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 426 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 427 #define MWL8K_CMD_UPDATE_STADB          0x1123
 428 #define MWL8K_CMD_BASTREAM              0x1125
 429
 430 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 431 {
 432         u16 command = le16_to_cpu(cmd);
 433
 434 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 435                                         snprintf(buf, bufsize, "%s", #x);\
 436                                         return buf;\
 437                                         } while (0)
 438         switch (command & ~0x8000) {
 439                 MWL8K_CMDNAME(CODE_DNLD);
 440                 MWL8K_CMDNAME(GET_HW_SPEC);
 441                 MWL8K_CMDNAME(SET_HW_SPEC);
 442                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 443                 MWL8K_CMDNAME(GET_STAT);
 444                 MWL8K_CMDNAME(RADIO_CONTROL);
 445                 MWL8K_CMDNAME(RF_TX_POWER);
 446                 MWL8K_CMDNAME(TX_POWER);
 447                 MWL8K_CMDNAME(RF_ANTENNA);
 448                 MWL8K_CMDNAME(SET_BEACON);
 449                 MWL8K_CMDNAME(SET_PRE_SCAN);
 450                 MWL8K_CMDNAME(SET_POST_SCAN);
 451                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 452                 MWL8K_CMDNAME(SET_AID);
 453                 MWL8K_CMDNAME(SET_RATE);
 454                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 455                 MWL8K_CMDNAME(RTS_THRESHOLD);
 456                 MWL8K_CMDNAME(SET_SLOT);
 457                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 458                 MWL8K_CMDNAME(SET_WMM_MODE);
 459                 MWL8K_CMDNAME(MIMO_CONFIG);
 460                 MWL8K_CMDNAME(USE_FIXED_RATE);
 461                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 462                 MWL8K_CMDNAME(SET_MAC_ADDR);
 463                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 464                 MWL8K_CMDNAME(BSS_START);
 465                 MWL8K_CMDNAME(SET_NEW_STN);
 466                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 467                 MWL8K_CMDNAME(UPDATE_STADB);
 468                 MWL8K_CMDNAME(BASTREAM);
 469                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 470         default:
 471                 snprintf(buf, bufsize, "0x%x", cmd);
 472         }
 473 #undef MWL8K_CMDNAME
 474
 475         return buf;
 476 }
 477
 478 /* Hardware and firmware reset */
 479 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 480 {
 481         iowrite32(MWL8K_H2A_INT_RESET,
 482                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 483         iowrite32(MWL8K_H2A_INT_RESET,
 484                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 485         msleep(20);
 486 }
 487
 488 /* Release fw image */
 489 static void mwl8k_release_fw(const struct firmware **fw)
 490 {
 491         if (*fw == NULL)
 492                 return;
 493         release_firmware(*fw);
 494         *fw = NULL;
 495 }
 496
 497 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 498 {
 499         mwl8k_release_fw(&priv->fw_ucode);
 500         mwl8k_release_fw(&priv->fw_helper);
 501 }
 502
 503 /* states for asynchronous f/w loading */
 504 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 505 enum {
 506         FW_STATE_INIT = 0,
 507         FW_STATE_LOADING_PREF,
 508         FW_STATE_LOADING_ALT,
 509         FW_STATE_ERROR,
 510 };
 511
 512 /* Request fw image */
 513 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 514                             const char *fname, const struct firmware **fw,
 515                             bool nowait)
 516 {
 517         /* release current image */
 518         if (*fw != NULL)
 519                 mwl8k_release_fw(fw);
 520
 521         if (nowait)
 522                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 523                                                &priv->pdev->dev, GFP_KERNEL,
 524                                                priv, mwl8k_fw_state_machine);
 525         else
 526                 return request_firmware(fw, fname, &priv->pdev->dev);
 527 }
 528
 529 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 530                                   bool nowait)
 531 {
 532         struct mwl8k_device_info *di = priv->device_info;
 533         int rc;
 534
 535         if (di->helper_image != NULL) {
 536                 if (nowait)
 537                         rc = mwl8k_request_fw(priv, di->helper_image,
 538                                               &priv->fw_helper, true);
 539                 else
 540                         rc = mwl8k_request_fw(priv, di->helper_image,
 541                                               &priv->fw_helper, false);
 542                 if (rc)
 543                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 544                                pci_name(priv->pdev), di->helper_image);
 545
 546                 if (rc || nowait)
 547                         return rc;
 548         }
 549
 550         if (nowait) {
 551                 /*
 552                  * if we get here, no helper image is needed.  Skip the
 553                  * FW_STATE_INIT state.
 554                  */
 555                 priv->fw_state = FW_STATE_LOADING_PREF;
 556                 rc = mwl8k_request_fw(priv, fw_image,
 557                                       &priv->fw_ucode,
 558                                       true);
 559         } else
 560                 rc = mwl8k_request_fw(priv, fw_image,
 561                                       &priv->fw_ucode, false);
 562         if (rc) {
 563                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 564                        pci_name(priv->pdev), fw_image);
 565                 mwl8k_release_fw(&priv->fw_helper);
 566                 return rc;
 567         }
 568
 569         return 0;
 570 }
 571
 572 struct mwl8k_cmd_pkt {
 573         __le16  code;
 574         __le16  length;
 575         __u8    seq_num;
 576         __u8    macid;
 577         __le16  result;
 578         char    payload[0];
 579 } __packed;
 580
 581 /*
 582  * Firmware loading.
 583  */
 584 static int
 585 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 586 {
 587         void __iomem *regs = priv->regs;
 588         dma_addr_t dma_addr;
 589         int loops;
 590
 591         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 592         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 593                 return -ENOMEM;
 594
 595         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 596         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 597         iowrite32(MWL8K_H2A_INT_DOORBELL,
 598                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 599         iowrite32(MWL8K_H2A_INT_DUMMY,
 600                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 601
 602         loops = 1000;
 603         do {
 604                 u32 int_code;
 605                 if (priv->is_8764) {
 606                         int_code = ioread32(regs +
 607                                             MWL8K_HIU_H2A_INTERRUPT_STATUS);
 608                         if (int_code == 0)
 609                                 break;
 610                 } else {
 611                         int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 612                         if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 613                                 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 614                                 break;
 615                         }
 616                 }
 617                 cond_resched();
 618                 udelay(1);
 619         } while (--loops);
 620
 621         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 622
 623         return loops ? 0 : -ETIMEDOUT;
 624 }
 625
 626 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 627                                 const u8 *data, size_t length)
 628 {
 629         struct mwl8k_cmd_pkt *cmd;
 630         int done;
 631         int rc = 0;
 632
 633         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 634         if (cmd == NULL)
 635                 return -ENOMEM;
 636
 637         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 638         cmd->seq_num = 0;
 639         cmd->macid = 0;
 640         cmd->result = 0;
 641
 642         done = 0;
 643         while (length) {
 644                 int block_size = length > 256 ? 256 : length;
 645
 646                 memcpy(cmd->payload, data + done, block_size);
 647                 cmd->length = cpu_to_le16(block_size);
 648
 649                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 650                                                 sizeof(*cmd) + block_size);
 651                 if (rc)
 652                         break;
 653
 654                 done += block_size;
 655                 length -= block_size;
 656         }
 657
 658         if (!rc) {
 659                 cmd->length = 0;
 660                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 661         }
 662
 663         kfree(cmd);
 664
 665         return rc;
 666 }
 667
 668 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 669                                 const u8 *data, size_t length)
 670 {
 671         unsigned char *buffer;
 672         int may_continue, rc = 0;
 673         u32 done, prev_block_size;
 674
 675         buffer = kmalloc(1024, GFP_KERNEL);
 676         if (buffer == NULL)
 677                 return -ENOMEM;
 678
 679         done = 0;
 680         prev_block_size = 0;
 681         may_continue = 1000;
 682         while (may_continue > 0) {
 683                 u32 block_size;
 684
 685                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 686                 if (block_size & 1) {
 687                         block_size &= ~1;
 688                         may_continue--;
 689                 } else {
 690                         done += prev_block_size;
 691                         length -= prev_block_size;
 692                 }
 693
 694                 if (block_size > 1024 || block_size > length) {
 695                         rc = -EOVERFLOW;
 696                         break;
 697                 }
 698
 699                 if (length == 0) {
 700                         rc = 0;
 701                         break;
 702                 }
 703
 704                 if (block_size == 0) {
 705                         rc = -EPROTO;
 706                         may_continue--;
 707                         udelay(1);
 708                         continue;
 709                 }
 710
 711                 prev_block_size = block_size;
 712                 memcpy(buffer, data + done, block_size);
 713
 714                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 715                 if (rc)
 716                         break;
 717         }
 718
 719         if (!rc && length != 0)
 720                 rc = -EREMOTEIO;
 721
 722         kfree(buffer);
 723
 724         return rc;
 725 }
 726
 727 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 728 {
 729         struct mwl8k_priv *priv = hw->priv;
 730         const struct firmware *fw = priv->fw_ucode;
 731         int rc;
 732         int loops;
 733
 734         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
 735                 const struct firmware *helper = priv->fw_helper;
 736
 737                 if (helper == NULL) {
 738                         printk(KERN_ERR "%s: helper image needed but none "
 739                                "given\n", pci_name(priv->pdev));
 740                         return -EINVAL;
 741                 }
 742
 743                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 744                 if (rc) {
 745                         printk(KERN_ERR "%s: unable to load firmware "
 746                                "helper image\n", pci_name(priv->pdev));
 747                         return rc;
 748                 }
 749                 msleep(20);
 750
 751                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 752         } else {
 753                 if (priv->is_8764)
 754                         rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 755                 else
 756                         rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 757         }
 758
 759         if (rc) {
 760                 printk(KERN_ERR "%s: unable to load firmware image\n",
 761                        pci_name(priv->pdev));
 762                 return rc;
 763         }
 764
 765         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 766
 767         loops = 500000;
 768         do {
 769                 u32 ready_code;
 770
 771                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 772                 if (ready_code == MWL8K_FWAP_READY) {
 773                         priv->ap_fw = true;
 774                         break;
 775                 } else if (ready_code == MWL8K_FWSTA_READY) {
 776                         priv->ap_fw = false;
 777                         break;
 778                 }
 779
 780                 cond_resched();
 781                 udelay(1);
 782         } while (--loops);
 783
 784         return loops ? 0 : -ETIMEDOUT;
 785 }
 786
 787
 788 /* DMA header used by firmware and hardware.  */
 789 struct mwl8k_dma_data {
 790         __le16 fwlen;
 791         struct ieee80211_hdr wh;
 792         char data[0];
 793 } __packed;
 794
 795 /* Routines to add/remove DMA header from skb.  */
 796 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 797 {
 798         struct mwl8k_dma_data *tr;
 799         int hdrlen;
 800
 801         tr = (struct mwl8k_dma_data *)skb->data;
 802         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 803
 804         if (hdrlen != sizeof(tr->wh)) {
 805                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 806                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 807                         *((__le16 *)(tr->data - 2)) = qos;
 808                 } else {
 809                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 810                 }
 811         }
 812
 813         if (hdrlen != sizeof(*tr))
 814                 skb_pull(skb, sizeof(*tr) - hdrlen);
 815 }
 816
 817 #define REDUCED_TX_HEADROOM     8
 818
 819 static void
 820 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 821                                                 int head_pad, int tail_pad)
 822 {
 823         struct ieee80211_hdr *wh;
 824         int hdrlen;
 825         int reqd_hdrlen;
 826         struct mwl8k_dma_data *tr;
 827
 828         /*
 829          * Add a firmware DMA header; the firmware requires that we
 830          * present a 2-byte payload length followed by a 4-address
 831          * header (without QoS field), followed (optionally) by any
 832          * WEP/ExtIV header (but only filled in for CCMP).
 833          */
 834         wh = (struct ieee80211_hdr *)skb->data;
 835
 836         hdrlen = ieee80211_hdrlen(wh->frame_control);
 837
 838         /*
 839          * Check if skb_resize is required because of
 840          * tx_headroom adjustment.
 841          */
 842         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 843                                                 + REDUCED_TX_HEADROOM))) {
 844                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 845
 846                         wiphy_err(priv->hw->wiphy,
 847                                         "Failed to reallocate TX buffer\n");
 848                         return;
 849                 }
 850                 skb->truesize += REDUCED_TX_HEADROOM;
 851         }
 852
 853         reqd_hdrlen = sizeof(*tr) + head_pad;
 854
 855         if (hdrlen != reqd_hdrlen)
 856                 skb_push(skb, reqd_hdrlen - hdrlen);
 857
 858         if (ieee80211_is_data_qos(wh->frame_control))
 859                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 860
 861         tr = (struct mwl8k_dma_data *)skb->data;
 862         if (wh != &tr->wh)
 863                 memmove(&tr->wh, wh, hdrlen);
 864         if (hdrlen != sizeof(tr->wh))
 865                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 866
 867         /*
 868          * Firmware length is the length of the fully formed "802.11
 869          * payload".  That is, everything except for the 802.11 header.
 870          * This includes all crypto material including the MIC.
 871          */
 872         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 873 }
 874
 875 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 876                 struct sk_buff *skb)
 877 {
 878         struct ieee80211_hdr *wh;
 879         struct ieee80211_tx_info *tx_info;
 880         struct ieee80211_key_conf *key_conf;
 881         int data_pad;
 882         int head_pad = 0;
 883
 884         wh = (struct ieee80211_hdr *)skb->data;
 885
 886         tx_info = IEEE80211_SKB_CB(skb);
 887
 888         key_conf = NULL;
 889         if (ieee80211_is_data(wh->frame_control))
 890                 key_conf = tx_info->control.hw_key;
 891
 892         /*
 893          * Make sure the packet header is in the DMA header format (4-address
 894          * without QoS), and add head & tail padding when HW crypto is enabled.
 895          *
 896          * We have the following trailer padding requirements:
 897          * - WEP: 4 trailer bytes (ICV)
 898          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 899          * - CCMP: 8 trailer bytes (MIC)
 900          */
 901         data_pad = 0;
 902         if (key_conf != NULL) {
 903                 head_pad = key_conf->iv_len;
 904                 switch (key_conf->cipher) {
 905                 case WLAN_CIPHER_SUITE_WEP40:
 906                 case WLAN_CIPHER_SUITE_WEP104:
 907                         data_pad = 4;
 908                         break;
 909                 case WLAN_CIPHER_SUITE_TKIP:
 910                         data_pad = 12;
 911                         break;
 912                 case WLAN_CIPHER_SUITE_CCMP:
 913                         data_pad = 8;
 914                         break;
 915                 }
 916         }
 917         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 918 }
 919
 920 /*
 921  * Packet reception for 88w8366/88w8764 AP firmware.
 922  */
 923 struct mwl8k_rxd_ap {
 924         __le16 pkt_len;
 925         __u8 sq2;
 926         __u8 rate;
 927         __le32 pkt_phys_addr;
 928         __le32 next_rxd_phys_addr;
 929         __le16 qos_control;
 930         __le16 htsig2;
 931         __le32 hw_rssi_info;
 932         __le32 hw_noise_floor_info;
 933         __u8 noise_floor;
 934         __u8 pad0[3];
 935         __u8 rssi;
 936         __u8 rx_status;
 937         __u8 channel;
 938         __u8 rx_ctrl;
 939 } __packed;
 940
 941 #define MWL8K_AP_RATE_INFO_MCS_FORMAT           0x80
 942 #define MWL8K_AP_RATE_INFO_40MHZ                0x40
 943 #define MWL8K_AP_RATE_INFO_RATEID(x)            ((x) & 0x3f)
 944
 945 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST          0x80
 946
 947 /* 8366/8764 AP rx_status bits */
 948 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK                0x80
 949 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR             0xFF
 950 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR            0x02
 951 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR             0x04
 952 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR            0x08
 953
 954 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 955 {
 956         struct mwl8k_rxd_ap *rxd = _rxd;
 957
 958         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 959         rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
 960 }
 961
 962 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
 963 {
 964         struct mwl8k_rxd_ap *rxd = _rxd;
 965
 966         rxd->pkt_len = cpu_to_le16(len);
 967         rxd->pkt_phys_addr = cpu_to_le32(addr);
 968         wmb();
 969         rxd->rx_ctrl = 0;
 970 }
 971
 972 static int
 973 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 974                      __le16 *qos, s8 *noise)
 975 {
 976         struct mwl8k_rxd_ap *rxd = _rxd;
 977
 978         if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
 979                 return -1;
 980         rmb();
 981
 982         memset(status, 0, sizeof(*status));
 983
 984         status->signal = -rxd->rssi;
 985         *noise = -rxd->noise_floor;
 986
 987         if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
 988                 status->flag |= RX_FLAG_HT;
 989                 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
 990                         status->flag |= RX_FLAG_40MHZ;
 991                 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
 992         } else {
 993                 int i;
 994
 995                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 996                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 997                                 status->rate_idx = i;
 998                                 break;
 999                         }
1000                 }
1001         }
1002
1003         if (rxd->channel > 14) {
1004                 status->band = IEEE80211_BAND_5GHZ;
1005                 if (!(status->flag & RX_FLAG_HT))
1006                         status->rate_idx -= 5;
1007         } else {
1008                 status->band = IEEE80211_BAND_2GHZ;
1009         }
1010         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1011                                                       status->band);
1012
1013         *qos = rxd->qos_control;
1014
1015         if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1016             (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1017             (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1018                 status->flag |= RX_FLAG_MMIC_ERROR;
1019
1020         return le16_to_cpu(rxd->pkt_len);
1021 }
1022
1023 static struct rxd_ops rxd_ap_ops = {
1024         .rxd_size       = sizeof(struct mwl8k_rxd_ap),
1025         .rxd_init       = mwl8k_rxd_ap_init,
1026         .rxd_refill     = mwl8k_rxd_ap_refill,
1027         .rxd_process    = mwl8k_rxd_ap_process,
1028 };
1029
1030 /*
1031  * Packet reception for STA firmware.
1032  */
1033 struct mwl8k_rxd_sta {
1034         __le16 pkt_len;
1035         __u8 link_quality;
1036         __u8 noise_level;
1037         __le32 pkt_phys_addr;
1038         __le32 next_rxd_phys_addr;
1039         __le16 qos_control;
1040         __le16 rate_info;
1041         __le32 pad0[4];
1042         __u8 rssi;
1043         __u8 channel;
1044         __le16 pad1;
1045         __u8 rx_ctrl;
1046         __u8 rx_status;
1047         __u8 pad2[2];
1048 } __packed;
1049
1050 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1051 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1052 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1053 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1054 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1055 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1056
1057 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1058 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1059 /* ICV=0 or MIC=1 */
1060 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1061 /* Key is uploaded only in failure case */
1062 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1063
1064 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1065 {
1066         struct mwl8k_rxd_sta *rxd = _rxd;
1067
1068         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1069         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1070 }
1071
1072 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1073 {
1074         struct mwl8k_rxd_sta *rxd = _rxd;
1075
1076         rxd->pkt_len = cpu_to_le16(len);
1077         rxd->pkt_phys_addr = cpu_to_le32(addr);
1078         wmb();
1079         rxd->rx_ctrl = 0;
1080 }
1081
1082 static int
1083 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1084                        __le16 *qos, s8 *noise)
1085 {
1086         struct mwl8k_rxd_sta *rxd = _rxd;
1087         u16 rate_info;
1088
1089         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1090                 return -1;
1091         rmb();
1092
1093         rate_info = le16_to_cpu(rxd->rate_info);
1094
1095         memset(status, 0, sizeof(*status));
1096
1097         status->signal = -rxd->rssi;
1098         *noise = -rxd->noise_level;
1099         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1100         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1101
1102         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1103                 status->flag |= RX_FLAG_SHORTPRE;
1104         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1105                 status->flag |= RX_FLAG_40MHZ;
1106         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1107                 status->flag |= RX_FLAG_SHORT_GI;
1108         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1109                 status->flag |= RX_FLAG_HT;
1110
1111         if (rxd->channel > 14) {
1112                 status->band = IEEE80211_BAND_5GHZ;
1113                 if (!(status->flag & RX_FLAG_HT))
1114                         status->rate_idx -= 5;
1115         } else {
1116                 status->band = IEEE80211_BAND_2GHZ;
1117         }
1118         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1119                                                       status->band);
1120
1121         *qos = rxd->qos_control;
1122         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1123             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1124                 status->flag |= RX_FLAG_MMIC_ERROR;
1125
1126         return le16_to_cpu(rxd->pkt_len);
1127 }
1128
1129 static struct rxd_ops rxd_sta_ops = {
1130         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1131         .rxd_init       = mwl8k_rxd_sta_init,
1132         .rxd_refill     = mwl8k_rxd_sta_refill,
1133         .rxd_process    = mwl8k_rxd_sta_process,
1134 };
1135
1136
1137 #define MWL8K_RX_DESCS          256
1138 #define MWL8K_RX_MAXSZ          3800
1139
1140 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1141 {
1142         struct mwl8k_priv *priv = hw->priv;
1143         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1144         int size;
1145         int i;
1146
1147         rxq->rxd_count = 0;
1148         rxq->head = 0;
1149         rxq->tail = 0;
1150
1151         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1152
1153         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1154         if (rxq->rxd == NULL) {
1155                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1156                 return -ENOMEM;
1157         }
1158         memset(rxq->rxd, 0, size);
1159
1160         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1161         if (rxq->buf == NULL) {
1162                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1163                 return -ENOMEM;
1164         }
1165
1166         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1167                 int desc_size;
1168                 void *rxd;
1169                 int nexti;
1170                 dma_addr_t next_dma_addr;
1171
1172                 desc_size = priv->rxd_ops->rxd_size;
1173                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1174
1175                 nexti = i + 1;
1176                 if (nexti == MWL8K_RX_DESCS)
1177                         nexti = 0;
1178                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1179
1180                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1181         }
1182
1183         return 0;
1184 }
1185
1186 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1187 {
1188         struct mwl8k_priv *priv = hw->priv;
1189         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1190         int refilled;
1191
1192         refilled = 0;
1193         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1194                 struct sk_buff *skb;
1195                 dma_addr_t addr;
1196                 int rx;
1197                 void *rxd;
1198
1199                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1200                 if (skb == NULL)
1201                         break;
1202
1203                 addr = pci_map_single(priv->pdev, skb->data,
1204                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1205
1206                 rxq->rxd_count++;
1207                 rx = rxq->tail++;
1208                 if (rxq->tail == MWL8K_RX_DESCS)
1209                         rxq->tail = 0;
1210                 rxq->buf[rx].skb = skb;
1211                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1212
1213                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1214                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1215
1216                 refilled++;
1217         }
1218
1219         return refilled;
1220 }
1221
1222 /* Must be called only when the card's reception is completely halted */
1223 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1224 {
1225         struct mwl8k_priv *priv = hw->priv;
1226         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1227         int i;
1228
1229         if (rxq->rxd == NULL)
1230                 return;
1231
1232         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1233                 if (rxq->buf[i].skb != NULL) {
1234                         pci_unmap_single(priv->pdev,
1235                                          dma_unmap_addr(&rxq->buf[i], dma),
1236                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1237                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1238
1239                         kfree_skb(rxq->buf[i].skb);
1240                         rxq->buf[i].skb = NULL;
1241                 }
1242         }
1243
1244         kfree(rxq->buf);
1245         rxq->buf = NULL;
1246
1247         pci_free_consistent(priv->pdev,
1248                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1249                             rxq->rxd, rxq->rxd_dma);
1250         rxq->rxd = NULL;
1251 }
1252
1253
1254 /*
1255  * Scan a list of BSSIDs to process for finalize join.
1256  * Allows for extension to process multiple BSSIDs.
1257  */
1258 static inline int
1259 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1260 {
1261         return priv->capture_beacon &&
1262                 ieee80211_is_beacon(wh->frame_control) &&
1263                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1264 }
1265
1266 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1267                                      struct sk_buff *skb)
1268 {
1269         struct mwl8k_priv *priv = hw->priv;
1270
1271         priv->capture_beacon = false;
1272         memset(priv->capture_bssid, 0, ETH_ALEN);
1273
1274         /*
1275          * Use GFP_ATOMIC as rxq_process is called from
1276          * the primary interrupt handler, memory allocation call
1277          * must not sleep.
1278          */
1279         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1280         if (priv->beacon_skb != NULL)
1281                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1282 }
1283
1284 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1285                                                    u8 *bssid)
1286 {
1287         struct mwl8k_vif *mwl8k_vif;
1288
1289         list_for_each_entry(mwl8k_vif,
1290                             vif_list, list) {
1291                 if (memcmp(bssid, mwl8k_vif->bssid,
1292                            ETH_ALEN) == 0)
1293                         return mwl8k_vif;
1294         }
1295
1296         return NULL;
1297 }
1298
1299 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1300 {
1301         struct mwl8k_priv *priv = hw->priv;
1302         struct mwl8k_vif *mwl8k_vif = NULL;
1303         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1304         int processed;
1305
1306         processed = 0;
1307         while (rxq->rxd_count && limit--) {
1308                 struct sk_buff *skb;
1309                 void *rxd;
1310                 int pkt_len;
1311                 struct ieee80211_rx_status status;
1312                 struct ieee80211_hdr *wh;
1313                 __le16 qos;
1314
1315                 skb = rxq->buf[rxq->head].skb;
1316                 if (skb == NULL)
1317                         break;
1318
1319                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1320
1321                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1322                                                         &priv->noise);
1323                 if (pkt_len < 0)
1324                         break;
1325
1326                 rxq->buf[rxq->head].skb = NULL;
1327
1328                 pci_unmap_single(priv->pdev,
1329                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1330                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1331                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1332
1333                 rxq->head++;
1334                 if (rxq->head == MWL8K_RX_DESCS)
1335                         rxq->head = 0;
1336
1337                 rxq->rxd_count--;
1338
1339                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1340
1341                 /*
1342                  * Check for a pending join operation.  Save a
1343                  * copy of the beacon and schedule a tasklet to
1344                  * send a FINALIZE_JOIN command to the firmware.
1345                  */
1346                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1347                         mwl8k_save_beacon(hw, skb);
1348
1349                 if (ieee80211_has_protected(wh->frame_control)) {
1350
1351                         /* Check if hw crypto has been enabled for
1352                          * this bss. If yes, set the status flags
1353                          * accordingly
1354                          */
1355                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1356                                                                 wh->addr1);
1357
1358                         if (mwl8k_vif != NULL &&
1359                             mwl8k_vif->is_hw_crypto_enabled) {
1360                                 /*
1361                                  * When MMIC ERROR is encountered
1362                                  * by the firmware, payload is
1363                                  * dropped and only 32 bytes of
1364                                  * mwl8k Firmware header is sent
1365                                  * to the host.
1366                                  *
1367                                  * We need to add four bytes of
1368                                  * key information.  In it
1369                                  * MAC80211 expects keyidx set to
1370                                  * 0 for triggering Counter
1371                                  * Measure of MMIC failure.
1372                                  */
1373                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1374                                         struct mwl8k_dma_data *tr;
1375                                         tr = (struct mwl8k_dma_data *)skb->data;
1376                                         memset((void *)&(tr->data), 0, 4);
1377                                         pkt_len += 4;
1378                                 }
1379
1380                                 if (!ieee80211_is_auth(wh->frame_control))
1381                                         status.flag |= RX_FLAG_IV_STRIPPED |
1382                                                        RX_FLAG_DECRYPTED |
1383                                                        RX_FLAG_MMIC_STRIPPED;
1384                         }
1385                 }
1386
1387                 skb_put(skb, pkt_len);
1388                 mwl8k_remove_dma_header(skb, qos);
1389                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1390                 ieee80211_rx_irqsafe(hw, skb);
1391
1392                 processed++;
1393         }
1394
1395         return processed;
1396 }
1397
1398
1399 /*
1400  * Packet transmission.
1401  */
1402
1403 #define MWL8K_TXD_STATUS_OK                     0x00000001
1404 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1405 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1406 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1407 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1408
1409 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1410 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1411 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1412 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1413 #define MWL8K_QOS_EOSP                          0x0010
1414
1415 struct mwl8k_tx_desc {
1416         __le32 status;
1417         __u8 data_rate;
1418         __u8 tx_priority;
1419         __le16 qos_control;
1420         __le32 pkt_phys_addr;
1421         __le16 pkt_len;
1422         __u8 dest_MAC_addr[ETH_ALEN];
1423         __le32 next_txd_phys_addr;
1424         __le32 timestamp;
1425         __le16 rate_info;
1426         __u8 peer_id;
1427         __u8 tx_frag_cnt;
1428 } __packed;
1429
1430 #define MWL8K_TX_DESCS          128
1431
1432 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1433 {
1434         struct mwl8k_priv *priv = hw->priv;
1435         struct mwl8k_tx_queue *txq = priv->txq + index;
1436         int size;
1437         int i;
1438
1439         txq->len = 0;
1440         txq->head = 0;
1441         txq->tail = 0;
1442
1443         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1444
1445         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1446         if (txq->txd == NULL) {
1447                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1448                 return -ENOMEM;
1449         }
1450         memset(txq->txd, 0, size);
1451
1452         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1453         if (txq->skb == NULL) {
1454                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1455                 return -ENOMEM;
1456         }
1457
1458         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1459                 struct mwl8k_tx_desc *tx_desc;
1460                 int nexti;
1461
1462                 tx_desc = txq->txd + i;
1463                 nexti = (i + 1) % MWL8K_TX_DESCS;
1464
1465                 tx_desc->status = 0;
1466                 tx_desc->next_txd_phys_addr =
1467                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1468         }
1469
1470         return 0;
1471 }
1472
1473 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1474 {
1475         iowrite32(MWL8K_H2A_INT_PPA_READY,
1476                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1477         iowrite32(MWL8K_H2A_INT_DUMMY,
1478                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1479         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1480 }
1481
1482 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1483 {
1484         struct mwl8k_priv *priv = hw->priv;
1485         int i;
1486
1487         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1488                 struct mwl8k_tx_queue *txq = priv->txq + i;
1489                 int fw_owned = 0;
1490                 int drv_owned = 0;
1491                 int unused = 0;
1492                 int desc;
1493
1494                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1495                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1496                         u32 status;
1497
1498                         status = le32_to_cpu(tx_desc->status);
1499                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1500                                 fw_owned++;
1501                         else
1502                                 drv_owned++;
1503
1504                         if (tx_desc->pkt_len == 0)
1505                                 unused++;
1506                 }
1507
1508                 wiphy_err(hw->wiphy,
1509                           "txq[%d] len=%d head=%d tail=%d "
1510                           "fw_owned=%d drv_owned=%d unused=%d\n",
1511                           i,
1512                           txq->len, txq->head, txq->tail,
1513                           fw_owned, drv_owned, unused);
1514         }
1515 }
1516
1517 /*
1518  * Must be called with priv->fw_mutex held and tx queues stopped.
1519  */
1520 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1521
1522 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1523 {
1524         struct mwl8k_priv *priv = hw->priv;
1525         DECLARE_COMPLETION_ONSTACK(tx_wait);
1526         int retry;
1527         int rc;
1528
1529         might_sleep();
1530
1531         /* Since fw restart is in progress, allow only the firmware
1532          * commands from the restart code and block the other
1533          * commands since they are going to fail in any case since
1534          * the firmware has crashed
1535          */
1536         if (priv->hw_restart_in_progress) {
1537                 if (priv->hw_restart_owner == current)
1538                         return 0;
1539                 else
1540                         return -EBUSY;
1541         }
1542
1543         if (atomic_read(&priv->watchdog_event_pending))
1544                 return 0;
1545
1546         /*
1547          * The TX queues are stopped at this point, so this test
1548          * doesn't need to take ->tx_lock.
1549          */
1550         if (!priv->pending_tx_pkts)
1551                 return 0;
1552
1553         retry = 0;
1554         rc = 0;
1555
1556         spin_lock_bh(&priv->tx_lock);
1557         priv->tx_wait = &tx_wait;
1558         while (!rc) {
1559                 int oldcount;
1560                 unsigned long timeout;
1561
1562                 oldcount = priv->pending_tx_pkts;
1563
1564                 spin_unlock_bh(&priv->tx_lock);
1565                 timeout = wait_for_completion_timeout(&tx_wait,
1566                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1567
1568                 if (atomic_read(&priv->watchdog_event_pending)) {
1569                         spin_lock_bh(&priv->tx_lock);
1570                         priv->tx_wait = NULL;
1571                         spin_unlock_bh(&priv->tx_lock);
1572                         return 0;
1573                 }
1574
1575                 spin_lock_bh(&priv->tx_lock);
1576
1577                 if (timeout) {
1578                         WARN_ON(priv->pending_tx_pkts);
1579                         if (retry)
1580                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1581                         break;
1582                 }
1583
1584                 if (priv->pending_tx_pkts < oldcount) {
1585                         wiphy_notice(hw->wiphy,
1586                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1587                                      oldcount, priv->pending_tx_pkts);
1588                         retry = 1;
1589                         continue;
1590                 }
1591
1592                 priv->tx_wait = NULL;
1593
1594                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1595                           MWL8K_TX_WAIT_TIMEOUT_MS);
1596                 mwl8k_dump_tx_rings(hw);
1597                 priv->hw_restart_in_progress = true;
1598                 ieee80211_queue_work(hw, &priv->fw_reload);
1599
1600                 rc = -ETIMEDOUT;
1601         }
1602         priv->tx_wait = NULL;
1603         spin_unlock_bh(&priv->tx_lock);
1604
1605         return rc;
1606 }
1607
1608 #define MWL8K_TXD_SUCCESS(status)                               \
1609         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1610                      MWL8K_TXD_STATUS_OK_RETRY |                \
1611                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1612
1613 static int mwl8k_tid_queue_mapping(u8 tid)
1614 {
1615         BUG_ON(tid > 7);
1616
1617         switch (tid) {
1618         case 0:
1619         case 3:
1620                 return IEEE80211_AC_BE;
1621                 break;
1622         case 1:
1623         case 2:
1624                 return IEEE80211_AC_BK;
1625                 break;
1626         case 4:
1627         case 5:
1628                 return IEEE80211_AC_VI;
1629                 break;
1630         case 6:
1631         case 7:
1632                 return IEEE80211_AC_VO;
1633                 break;
1634         default:
1635                 return -1;
1636                 break;
1637         }
1638 }
1639
1640 /* The firmware will fill in the rate information
1641  * for each packet that gets queued in the hardware
1642  * and these macros will interpret that info.
1643  */
1644
1645 #define RI_FORMAT(a)              (a & 0x0001)
1646 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1647
1648 static int
1649 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1650 {
1651         struct mwl8k_priv *priv = hw->priv;
1652         struct mwl8k_tx_queue *txq = priv->txq + index;
1653         int processed;
1654
1655         processed = 0;
1656         while (txq->len > 0 && limit--) {
1657                 int tx;
1658                 struct mwl8k_tx_desc *tx_desc;
1659                 unsigned long addr;
1660                 int size;
1661                 struct sk_buff *skb;
1662                 struct ieee80211_tx_info *info;
1663                 u32 status;
1664                 struct ieee80211_sta *sta;
1665                 struct mwl8k_sta *sta_info = NULL;
1666                 u16 rate_info;
1667                 struct ieee80211_hdr *wh;
1668
1669                 tx = txq->head;
1670                 tx_desc = txq->txd + tx;
1671
1672                 status = le32_to_cpu(tx_desc->status);
1673
1674                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1675                         if (!force)
1676                                 break;
1677                         tx_desc->status &=
1678                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1679                 }
1680
1681                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1682                 BUG_ON(txq->len == 0);
1683                 txq->len--;
1684                 priv->pending_tx_pkts--;
1685
1686                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1687                 size = le16_to_cpu(tx_desc->pkt_len);
1688                 skb = txq->skb[tx];
1689                 txq->skb[tx] = NULL;
1690
1691                 BUG_ON(skb == NULL);
1692                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1693
1694                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1695
1696                 wh = (struct ieee80211_hdr *) skb->data;
1697
1698                 /* Mark descriptor as unused */
1699                 tx_desc->pkt_phys_addr = 0;
1700                 tx_desc->pkt_len = 0;
1701
1702                 info = IEEE80211_SKB_CB(skb);
1703                 if (ieee80211_is_data(wh->frame_control)) {
1704                         rcu_read_lock();
1705                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1706                                                            wh->addr2);
1707                         if (sta) {
1708                                 sta_info = MWL8K_STA(sta);
1709                                 BUG_ON(sta_info == NULL);
1710                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1711                                 /* If rate is < 6.5 Mpbs for an ht station
1712                                  * do not form an ampdu. If the station is a
1713                                  * legacy station (format = 0), do not form an
1714                                  * ampdu
1715                                  */
1716                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1717                                     RI_FORMAT(rate_info) == 0) {
1718                                         sta_info->is_ampdu_allowed = false;
1719                                 } else {
1720                                         sta_info->is_ampdu_allowed = true;
1721                                 }
1722                         }
1723                         rcu_read_unlock();
1724                 }
1725
1726                 ieee80211_tx_info_clear_status(info);
1727
1728                 /* Rate control is happening in the firmware.
1729                  * Ensure no tx rate is being reported.
1730                  */
1731                 info->status.rates[0].idx = -1;
1732                 info->status.rates[0].count = 1;
1733
1734                 if (MWL8K_TXD_SUCCESS(status))
1735                         info->flags |= IEEE80211_TX_STAT_ACK;
1736
1737                 ieee80211_tx_status_irqsafe(hw, skb);
1738
1739                 processed++;
1740         }
1741
1742         return processed;
1743 }
1744
1745 /* must be called only when the card's transmit is completely halted */
1746 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1747 {
1748         struct mwl8k_priv *priv = hw->priv;
1749         struct mwl8k_tx_queue *txq = priv->txq + index;
1750
1751         if (txq->txd == NULL)
1752                 return;
1753
1754         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1755
1756         kfree(txq->skb);
1757         txq->skb = NULL;
1758
1759         pci_free_consistent(priv->pdev,
1760                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1761                             txq->txd, txq->txd_dma);
1762         txq->txd = NULL;
1763 }
1764
1765 /* caller must hold priv->stream_lock when calling the stream functions */
1766 static struct mwl8k_ampdu_stream *
1767 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1768 {
1769         struct mwl8k_ampdu_stream *stream;
1770         struct mwl8k_priv *priv = hw->priv;
1771         int i;
1772
1773         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1774                 stream = &priv->ampdu[i];
1775                 if (stream->state == AMPDU_NO_STREAM) {
1776                         stream->sta = sta;
1777                         stream->state = AMPDU_STREAM_NEW;
1778                         stream->tid = tid;
1779                         stream->idx = i;
1780                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1781                                     sta->addr, tid);
1782                         return stream;
1783                 }
1784         }
1785         return NULL;
1786 }
1787
1788 static int
1789 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1790 {
1791         int ret;
1792
1793         /* if the stream has already been started, don't start it again */
1794         if (stream->state != AMPDU_STREAM_NEW)
1795                 return 0;
1796         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1797         if (ret)
1798                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1799                             "%d\n", stream->sta->addr, stream->tid, ret);
1800         else
1801                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1802                             stream->sta->addr, stream->tid);
1803         return ret;
1804 }
1805
1806 static void
1807 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1808 {
1809         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1810                     stream->tid);
1811         memset(stream, 0, sizeof(*stream));
1812 }
1813
1814 static struct mwl8k_ampdu_stream *
1815 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1816 {
1817         struct mwl8k_priv *priv = hw->priv;
1818         int i;
1819
1820         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1821                 struct mwl8k_ampdu_stream *stream;
1822                 stream = &priv->ampdu[i];
1823                 if (stream->state == AMPDU_NO_STREAM)
1824                         continue;
1825                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1826                     stream->tid == tid)
1827                         return stream;
1828         }
1829         return NULL;
1830 }
1831
1832 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1833 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1834 {
1835         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1836         struct tx_traffic_info *tx_stats;
1837
1838         BUG_ON(tid >= MWL8K_MAX_TID);
1839         tx_stats = &sta_info->tx_stats[tid];
1840
1841         return sta_info->is_ampdu_allowed &&
1842                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1843 }
1844
1845 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1846 {
1847         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1848         struct tx_traffic_info *tx_stats;
1849
1850         BUG_ON(tid >= MWL8K_MAX_TID);
1851         tx_stats = &sta_info->tx_stats[tid];
1852
1853         if (tx_stats->start_time == 0)
1854                 tx_stats->start_time = jiffies;
1855
1856         /* reset the packet count after each second elapses.  If the number of
1857          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1858          * an ampdu stream to be started.
1859          */
1860         if (jiffies - tx_stats->start_time > HZ) {
1861                 tx_stats->pkts = 0;
1862                 tx_stats->start_time = 0;
1863         } else
1864                 tx_stats->pkts++;
1865 }
1866
1867 /* The hardware ampdu queues start from 5.
1868  * txpriorities for ampdu queues are
1869  * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1870  * and queue 3 is lowest (queue 4 is reserved)
1871  */
1872 #define BA_QUEUE                5
1873
1874 static void
1875 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1876                int index,
1877                struct ieee80211_sta *sta,
1878                struct sk_buff *skb)
1879 {
1880         struct mwl8k_priv *priv = hw->priv;
1881         struct ieee80211_tx_info *tx_info;
1882         struct mwl8k_vif *mwl8k_vif;
1883         struct ieee80211_hdr *wh;
1884         struct mwl8k_tx_queue *txq;
1885         struct mwl8k_tx_desc *tx;
1886         dma_addr_t dma;
1887         u32 txstatus;
1888         u8 txdatarate;
1889         u16 qos;
1890         int txpriority;
1891         u8 tid = 0;
1892         struct mwl8k_ampdu_stream *stream = NULL;
1893         bool start_ba_session = false;
1894         bool mgmtframe = false;
1895         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1896         bool eapol_frame = false;
1897
1898         wh = (struct ieee80211_hdr *)skb->data;
1899         if (ieee80211_is_data_qos(wh->frame_control))
1900                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1901         else
1902                 qos = 0;
1903
1904         if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1905                 eapol_frame = true;
1906
1907         if (ieee80211_is_mgmt(wh->frame_control))
1908                 mgmtframe = true;
1909
1910         if (priv->ap_fw)
1911                 mwl8k_encapsulate_tx_frame(priv, skb);
1912         else
1913                 mwl8k_add_dma_header(priv, skb, 0, 0);
1914
1915         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1916
1917         tx_info = IEEE80211_SKB_CB(skb);
1918         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1919
1920         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1921                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1922                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1923                 mwl8k_vif->seqno += 0x10;
1924         }
1925
1926         /* Setup firmware control bit fields for each frame type.  */
1927         txstatus = 0;
1928         txdatarate = 0;
1929         if (ieee80211_is_mgmt(wh->frame_control) ||
1930             ieee80211_is_ctl(wh->frame_control)) {
1931                 txdatarate = 0;
1932                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1933         } else if (ieee80211_is_data(wh->frame_control)) {
1934                 txdatarate = 1;
1935                 if (is_multicast_ether_addr(wh->addr1))
1936                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1937
1938                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1939                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1940                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1941                 else
1942                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1943         }
1944
1945         /* Queue ADDBA request in the respective data queue.  While setting up
1946          * the ampdu stream, mac80211 queues further packets for that
1947          * particular ra/tid pair.  However, packets piled up in the hardware
1948          * for that ra/tid pair will still go out. ADDBA request and the
1949          * related data packets going out from different queues asynchronously
1950          * will cause a shift in the receiver window which might result in
1951          * ampdu packets getting dropped at the receiver after the stream has
1952          * been setup.
1953          */
1954         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1955             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1956             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1957             priv->ap_fw)) {
1958                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1959                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1960                 index = mwl8k_tid_queue_mapping(tid);
1961         }
1962
1963         txpriority = index;
1964
1965         if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1966             ieee80211_is_data_qos(wh->frame_control)) {
1967                 tid = qos & 0xf;
1968                 mwl8k_tx_count_packet(sta, tid);
1969                 spin_lock(&priv->stream_lock);
1970                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1971                 if (stream != NULL) {
1972                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1973                                 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1974                                 txpriority = (BA_QUEUE + stream->idx) %
1975                                              TOTAL_HW_TX_QUEUES;
1976                                 if (stream->idx <= 1)
1977                                         index = stream->idx +
1978                                                 MWL8K_TX_WMM_QUEUES;
1979
1980                         } else if (stream->state == AMPDU_STREAM_NEW) {
1981                                 /* We get here if the driver sends us packets
1982                                  * after we've initiated a stream, but before
1983                                  * our ampdu_action routine has been called
1984                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1985                                  * for the ADDBA request.  So this packet can
1986                                  * go out with no risk of sequence number
1987                                  * mismatch.  No special handling is required.
1988                                  */
1989                         } else {
1990                                 /* Drop packets that would go out after the
1991                                  * ADDBA request was sent but before the ADDBA
1992                                  * response is received.  If we don't do this,
1993                                  * the recipient would probably receive it
1994                                  * after the ADDBA request with SSN 0.  This
1995                                  * will cause the recipient's BA receive window
1996                                  * to shift, which would cause the subsequent
1997                                  * packets in the BA stream to be discarded.
1998                                  * mac80211 queues our packets for us in this
1999                                  * case, so this is really just a safety check.
2000                                  */
2001                                 wiphy_warn(hw->wiphy,
2002                                            "Cannot send packet while ADDBA "
2003                                            "dialog is underway.\n");
2004                                 spin_unlock(&priv->stream_lock);
2005                                 dev_kfree_skb(skb);
2006                                 return;
2007                         }
2008                 } else {
2009                         /* Defer calling mwl8k_start_stream so that the current
2010                          * skb can go out before the ADDBA request.  This
2011                          * prevents sequence number mismatch at the recepient
2012                          * as described above.
2013                          */
2014                         if (mwl8k_ampdu_allowed(sta, tid)) {
2015                                 stream = mwl8k_add_stream(hw, sta, tid);
2016                                 if (stream != NULL)
2017                                         start_ba_session = true;
2018                         }
2019                 }
2020                 spin_unlock(&priv->stream_lock);
2021         } else {
2022                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2023                 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2024         }
2025
2026         dma = pci_map_single(priv->pdev, skb->data,
2027                                 skb->len, PCI_DMA_TODEVICE);
2028
2029         if (pci_dma_mapping_error(priv->pdev, dma)) {
2030                 wiphy_debug(hw->wiphy,
2031                             "failed to dma map skb, dropping TX frame.\n");
2032                 if (start_ba_session) {
2033                         spin_lock(&priv->stream_lock);
2034                         mwl8k_remove_stream(hw, stream);
2035                         spin_unlock(&priv->stream_lock);
2036                 }
2037                 dev_kfree_skb(skb);
2038                 return;
2039         }
2040
2041         spin_lock_bh(&priv->tx_lock);
2042
2043         txq = priv->txq + index;
2044
2045         /* Mgmt frames that go out frequently are probe
2046          * responses. Other mgmt frames got out relatively
2047          * infrequently. Hence reserve 2 buffers so that
2048          * other mgmt frames do not get dropped due to an
2049          * already queued probe response in one of the
2050          * reserved buffers.
2051          */
2052
2053         if (txq->len >= MWL8K_TX_DESCS - 2) {
2054                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2055                         if (start_ba_session) {
2056                                 spin_lock(&priv->stream_lock);
2057                                 mwl8k_remove_stream(hw, stream);
2058                                 spin_unlock(&priv->stream_lock);
2059                         }
2060                         spin_unlock_bh(&priv->tx_lock);
2061                         pci_unmap_single(priv->pdev, dma, skb->len,
2062                                          PCI_DMA_TODEVICE);
2063                         dev_kfree_skb(skb);
2064                         return;
2065                 }
2066         }
2067
2068         BUG_ON(txq->skb[txq->tail] != NULL);
2069         txq->skb[txq->tail] = skb;
2070
2071         tx = txq->txd + txq->tail;
2072         tx->data_rate = txdatarate;
2073         tx->tx_priority = txpriority;
2074         tx->qos_control = cpu_to_le16(qos);
2075         tx->pkt_phys_addr = cpu_to_le32(dma);
2076         tx->pkt_len = cpu_to_le16(skb->len);
2077         tx->rate_info = 0;
2078         if (!priv->ap_fw && sta != NULL)
2079                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2080         else
2081                 tx->peer_id = 0;
2082
2083         if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2084                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2085                                                 MWL8K_HW_TIMER_REGISTER));
2086         else
2087                 tx->timestamp = 0;
2088
2089         wmb();
2090         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2091
2092         txq->len++;
2093         priv->pending_tx_pkts++;
2094
2095         txq->tail++;
2096         if (txq->tail == MWL8K_TX_DESCS)
2097                 txq->tail = 0;
2098
2099         mwl8k_tx_start(priv);
2100
2101         spin_unlock_bh(&priv->tx_lock);
2102
2103         /* Initiate the ampdu session here */
2104         if (start_ba_session) {
2105                 spin_lock(&priv->stream_lock);
2106                 if (mwl8k_start_stream(hw, stream))
2107                         mwl8k_remove_stream(hw, stream);
2108                 spin_unlock(&priv->stream_lock);
2109         }
2110 }
2111
2112
2113 /*
2114  * Firmware access.
2115  *
2116  * We have the following requirements for issuing firmware commands:
2117  * - Some commands require that the packet transmit path is idle when
2118  *   the command is issued.  (For simplicity, we'll just quiesce the
2119  *   transmit path for every command.)
2120  * - There are certain sequences of commands that need to be issued to
2121  *   the hardware sequentially, with no other intervening commands.
2122  *
2123  * This leads to an implementation of a "firmware lock" as a mutex that
2124  * can be taken recursively, and which is taken by both the low-level
2125  * command submission function (mwl8k_post_cmd) as well as any users of
2126  * that function that require issuing of an atomic sequence of commands,
2127  * and quiesces the transmit path whenever it's taken.
2128  */
2129 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2130 {
2131         struct mwl8k_priv *priv = hw->priv;
2132
2133         if (priv->fw_mutex_owner != current) {
2134                 int rc;
2135
2136                 mutex_lock(&priv->fw_mutex);
2137                 ieee80211_stop_queues(hw);
2138
2139                 rc = mwl8k_tx_wait_empty(hw);
2140                 if (rc) {
2141                         if (!priv->hw_restart_in_progress)
2142                                 ieee80211_wake_queues(hw);
2143
2144                         mutex_unlock(&priv->fw_mutex);
2145
2146                         return rc;
2147                 }
2148
2149                 priv->fw_mutex_owner = current;
2150         }
2151
2152         priv->fw_mutex_depth++;
2153
2154         return 0;
2155 }
2156
2157 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2158 {
2159         struct mwl8k_priv *priv = hw->priv;
2160
2161         if (!--priv->fw_mutex_depth) {
2162                 if (!priv->hw_restart_in_progress)
2163                         ieee80211_wake_queues(hw);
2164
2165                 priv->fw_mutex_owner = NULL;
2166                 mutex_unlock(&priv->fw_mutex);
2167         }
2168 }
2169
2170 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2171                                u32 bitmap);
2172
2173 /*
2174  * Command processing.
2175  */
2176
2177 /* Timeout firmware commands after 10s */
2178 #define MWL8K_CMD_TIMEOUT_MS    10000
2179
2180 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2181 {
2182         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2183         struct mwl8k_priv *priv = hw->priv;
2184         void __iomem *regs = priv->regs;
2185         dma_addr_t dma_addr;
2186         unsigned int dma_size;
2187         int rc;
2188         unsigned long timeout = 0;
2189         u8 buf[32];
2190         u32 bitmap = 0;
2191
2192         wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2193                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2194
2195         /* Before posting firmware commands that could change the hardware
2196          * characteristics, make sure that all BSSes are stopped temporary.
2197          * Enable these stopped BSSes after completion of the commands
2198          */
2199
2200         rc = mwl8k_fw_lock(hw);
2201         if (rc)
2202                 return rc;
2203
2204         if (priv->ap_fw && priv->running_bsses) {
2205                 switch (le16_to_cpu(cmd->code)) {
2206                 case MWL8K_CMD_SET_RF_CHANNEL:
2207                 case MWL8K_CMD_RADIO_CONTROL:
2208                 case MWL8K_CMD_RF_TX_POWER:
2209                 case MWL8K_CMD_TX_POWER:
2210                 case MWL8K_CMD_RF_ANTENNA:
2211                 case MWL8K_CMD_RTS_THRESHOLD:
2212                 case MWL8K_CMD_MIMO_CONFIG:
2213                         bitmap = priv->running_bsses;
2214                         mwl8k_enable_bsses(hw, false, bitmap);
2215                         break;
2216                 }
2217         }
2218
2219         cmd->result = (__force __le16) 0xffff;
2220         dma_size = le16_to_cpu(cmd->length);
2221         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2222                                   PCI_DMA_BIDIRECTIONAL);
2223         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2224                 return -ENOMEM;
2225
2226         priv->hostcmd_wait = &cmd_wait;
2227         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2228         iowrite32(MWL8K_H2A_INT_DOORBELL,
2229                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2230         iowrite32(MWL8K_H2A_INT_DUMMY,
2231                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2232
2233         timeout = wait_for_completion_timeout(&cmd_wait,
2234                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2235
2236         priv->hostcmd_wait = NULL;
2237
2238
2239         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2240                                         PCI_DMA_BIDIRECTIONAL);
2241
2242         if (!timeout) {
2243                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2244                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2245                           MWL8K_CMD_TIMEOUT_MS);
2246                 rc = -ETIMEDOUT;
2247         } else {
2248                 int ms;
2249
2250                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2251
2252                 rc = cmd->result ? -EINVAL : 0;
2253                 if (rc)
2254                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2255                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2256                                   le16_to_cpu(cmd->result));
2257                 else if (ms > 2000)
2258                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2259                                      mwl8k_cmd_name(cmd->code,
2260                                                     buf, sizeof(buf)),
2261                                      ms);
2262         }
2263
2264         if (bitmap)
2265                 mwl8k_enable_bsses(hw, true, bitmap);
2266
2267         mwl8k_fw_unlock(hw);
2268
2269         return rc;
2270 }
2271
2272 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2273                                  struct ieee80211_vif *vif,
2274                                  struct mwl8k_cmd_pkt *cmd)
2275 {
2276         if (vif != NULL)
2277                 cmd->macid = MWL8K_VIF(vif)->macid;
2278         return mwl8k_post_cmd(hw, cmd);
2279 }
2280
2281 /*
2282  * Setup code shared between STA and AP firmware images.
2283  */
2284 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2285 {
2286         struct mwl8k_priv *priv = hw->priv;
2287
2288         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2289         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2290
2291         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2292         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2293
2294         priv->band_24.band = IEEE80211_BAND_2GHZ;
2295         priv->band_24.channels = priv->channels_24;
2296         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2297         priv->band_24.bitrates = priv->rates_24;
2298         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2299
2300         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2301 }
2302
2303 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2304 {
2305         struct mwl8k_priv *priv = hw->priv;
2306
2307         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2308         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2309
2310         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2311         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2312
2313         priv->band_50.band = IEEE80211_BAND_5GHZ;
2314         priv->band_50.channels = priv->channels_50;
2315         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2316         priv->band_50.bitrates = priv->rates_50;
2317         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2318
2319         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2320 }
2321
2322 /*
2323  * CMD_GET_HW_SPEC (STA version).
2324  */
2325 struct mwl8k_cmd_get_hw_spec_sta {
2326         struct mwl8k_cmd_pkt header;
2327         __u8 hw_rev;
2328         __u8 host_interface;
2329         __le16 num_mcaddrs;
2330         __u8 perm_addr[ETH_ALEN];
2331         __le16 region_code;
2332         __le32 fw_rev;
2333         __le32 ps_cookie;
2334         __le32 caps;
2335         __u8 mcs_bitmap[16];
2336         __le32 rx_queue_ptr;
2337         __le32 num_tx_queues;
2338         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2339         __le32 caps2;
2340         __le32 num_tx_desc_per_queue;
2341         __le32 total_rxd;
2342 } __packed;
2343
2344 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2345 #define MWL8K_CAP_GREENFIELD            0x08000000
2346 #define MWL8K_CAP_AMPDU                 0x04000000
2347 #define MWL8K_CAP_RX_STBC               0x01000000
2348 #define MWL8K_CAP_TX_STBC               0x00800000
2349 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2350 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2351 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2352 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2353 #define MWL8K_CAP_DELAY_BA              0x00003000
2354 #define MWL8K_CAP_MIMO                  0x00000200
2355 #define MWL8K_CAP_40MHZ                 0x00000100
2356 #define MWL8K_CAP_BAND_MASK             0x00000007
2357 #define MWL8K_CAP_5GHZ                  0x00000004
2358 #define MWL8K_CAP_2GHZ4                 0x00000001
2359
2360 static void
2361 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2362                   struct ieee80211_supported_band *band, u32 cap)
2363 {
2364         int rx_streams;
2365         int tx_streams;
2366
2367         band->ht_cap.ht_supported = 1;
2368
2369         if (cap & MWL8K_CAP_MAX_AMSDU)
2370                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2371         if (cap & MWL8K_CAP_GREENFIELD)
2372                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2373         if (cap & MWL8K_CAP_AMPDU) {
2374                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2375                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2376                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2377         }
2378         if (cap & MWL8K_CAP_RX_STBC)
2379                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2380         if (cap & MWL8K_CAP_TX_STBC)
2381                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2382         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2383                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2384         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2385                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2386         if (cap & MWL8K_CAP_DELAY_BA)
2387                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2388         if (cap & MWL8K_CAP_40MHZ)
2389                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2390
2391         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2392         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2393
2394         band->ht_cap.mcs.rx_mask[0] = 0xff;
2395         if (rx_streams >= 2)
2396                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2397         if (rx_streams >= 3)
2398                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2399         band->ht_cap.mcs.rx_mask[4] = 0x01;
2400         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2401
2402         if (rx_streams != tx_streams) {
2403                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2404                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2405                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2406         }
2407 }
2408
2409 static void
2410 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2411 {
2412         struct mwl8k_priv *priv = hw->priv;
2413
2414         if (priv->caps)
2415                 return;
2416
2417         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2418                 mwl8k_setup_2ghz_band(hw);
2419                 if (caps & MWL8K_CAP_MIMO)
2420                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2421         }
2422
2423         if (caps & MWL8K_CAP_5GHZ) {
2424                 mwl8k_setup_5ghz_band(hw);
2425                 if (caps & MWL8K_CAP_MIMO)
2426                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2427         }
2428
2429         priv->caps = caps;
2430 }
2431
2432 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2433 {
2434         struct mwl8k_priv *priv = hw->priv;
2435         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2436         int rc;
2437         int i;
2438
2439         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2440         if (cmd == NULL)
2441                 return -ENOMEM;
2442
2443         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2444         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2445
2446         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2447         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2448         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2449         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2450         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2451                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2452         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2453         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2454
2455         rc = mwl8k_post_cmd(hw, &cmd->header);
2456
2457         if (!rc) {
2458                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2459                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2460                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2461                 priv->hw_rev = cmd->hw_rev;
2462                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2463                 priv->ap_macids_supported = 0x00000000;
2464                 priv->sta_macids_supported = 0x00000001;
2465         }
2466
2467         kfree(cmd);
2468         return rc;
2469 }
2470
2471 /*
2472  * CMD_GET_HW_SPEC (AP version).
2473  */
2474 struct mwl8k_cmd_get_hw_spec_ap {
2475         struct mwl8k_cmd_pkt header;
2476         __u8 hw_rev;
2477         __u8 host_interface;
2478         __le16 num_wcb;
2479         __le16 num_mcaddrs;
2480         __u8 perm_addr[ETH_ALEN];
2481         __le16 region_code;
2482         __le16 num_antenna;
2483         __le32 fw_rev;
2484         __le32 wcbbase0;
2485         __le32 rxwrptr;
2486         __le32 rxrdptr;
2487         __le32 ps_cookie;
2488         __le32 wcbbase1;
2489         __le32 wcbbase2;
2490         __le32 wcbbase3;
2491         __le32 fw_api_version;
2492         __le32 caps;
2493         __le32 num_of_ampdu_queues;
2494         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2495 } __packed;
2496
2497 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2498 {
2499         struct mwl8k_priv *priv = hw->priv;
2500         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2501         int rc, i;
2502         u32 api_version;
2503
2504         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2505         if (cmd == NULL)
2506                 return -ENOMEM;
2507
2508         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2509         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2510
2511         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2512         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2513
2514         rc = mwl8k_post_cmd(hw, &cmd->header);
2515
2516         if (!rc) {
2517                 int off;
2518
2519                 api_version = le32_to_cpu(cmd->fw_api_version);
2520                 if (priv->device_info->fw_api_ap != api_version) {
2521                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2522                                "  Expected %d got %d.\n", MWL8K_NAME,
2523                                priv->device_info->part_name,
2524                                priv->device_info->fw_api_ap,
2525                                api_version);
2526                         rc = -EINVAL;
2527                         goto done;
2528                 }
2529                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2530                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2531                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2532                 priv->hw_rev = cmd->hw_rev;
2533                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2534                 priv->ap_macids_supported = 0x000000ff;
2535                 priv->sta_macids_supported = 0x00000100;
2536                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2537                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2538                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2539                                    " but we only support %d.\n",
2540                                    priv->num_ampdu_queues,
2541                                    MWL8K_MAX_AMPDU_QUEUES);
2542                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2543                 }
2544                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2545                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2546
2547                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2548                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2549
2550                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2551                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2552                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2553                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2554
2555                 for (i = 0; i < priv->num_ampdu_queues; i++)
2556                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2557                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2558         }
2559
2560 done:
2561         kfree(cmd);
2562         return rc;
2563 }
2564
2565 /*
2566  * CMD_SET_HW_SPEC.
2567  */
2568 struct mwl8k_cmd_set_hw_spec {
2569         struct mwl8k_cmd_pkt header;
2570         __u8 hw_rev;
2571         __u8 host_interface;
2572         __le16 num_mcaddrs;
2573         __u8 perm_addr[ETH_ALEN];
2574         __le16 region_code;
2575         __le32 fw_rev;
2576         __le32 ps_cookie;
2577         __le32 caps;
2578         __le32 rx_queue_ptr;
2579         __le32 num_tx_queues;
2580         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2581         __le32 flags;
2582         __le32 num_tx_desc_per_queue;
2583         __le32 total_rxd;
2584 } __packed;
2585
2586 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2587  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2588  * the packets that are queued for more than 500ms, will be dropped in the
2589  * hardware. This helps minimizing the issues caused due to head-of-line
2590  * blocking where a slow client can hog the bandwidth and affect traffic to a
2591  * faster client.
2592  */
2593 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2594 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2595 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2596 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2597 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2598
2599 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2600 {
2601         struct mwl8k_priv *priv = hw->priv;
2602         struct mwl8k_cmd_set_hw_spec *cmd;
2603         int rc;
2604         int i;
2605
2606         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2607         if (cmd == NULL)
2608                 return -ENOMEM;
2609
2610         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2611         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2612
2613         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2614         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2615         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2616
2617         /*
2618          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2619          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2620          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2621          * priority is interpreted the right way in firmware.
2622          */
2623         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2624                 int j = mwl8k_tx_queues(priv) - 1 - i;
2625                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2626         }
2627
2628         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2629                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2630                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2631                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2632                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2633         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2634         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2635
2636         rc = mwl8k_post_cmd(hw, &cmd->header);
2637         kfree(cmd);
2638
2639         return rc;
2640 }
2641
2642 /*
2643  * CMD_MAC_MULTICAST_ADR.
2644  */
2645 struct mwl8k_cmd_mac_multicast_adr {
2646         struct mwl8k_cmd_pkt header;
2647         __le16 action;
2648         __le16 numaddr;
2649         __u8 addr[0][ETH_ALEN];
2650 };
2651
2652 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2653 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2654 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2655 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2656
2657 static struct mwl8k_cmd_pkt *
2658 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2659                               struct netdev_hw_addr_list *mc_list)
2660 {
2661         struct mwl8k_priv *priv = hw->priv;
2662         struct mwl8k_cmd_mac_multicast_adr *cmd;
2663         int size;
2664         int mc_count = 0;
2665
2666         if (mc_list)
2667                 mc_count = netdev_hw_addr_list_count(mc_list);
2668
2669         if (allmulti || mc_count > priv->num_mcaddrs) {
2670                 allmulti = 1;
2671                 mc_count = 0;
2672         }
2673
2674         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2675
2676         cmd = kzalloc(size, GFP_ATOMIC);
2677         if (cmd == NULL)
2678                 return NULL;
2679
2680         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2681         cmd->header.length = cpu_to_le16(size);
2682         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2683                                   MWL8K_ENABLE_RX_BROADCAST);
2684
2685         if (allmulti) {
2686                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2687         } else if (mc_count) {
2688                 struct netdev_hw_addr *ha;
2689                 int i = 0;
2690
2691                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2692                 cmd->numaddr = cpu_to_le16(mc_count);
2693                 netdev_hw_addr_list_for_each(ha, mc_list) {
2694                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2695                 }
2696         }
2697
2698         return &cmd->header;
2699 }
2700
2701 /*
2702  * CMD_GET_STAT.
2703  */
2704 struct mwl8k_cmd_get_stat {
2705         struct mwl8k_cmd_pkt header;
2706         __le32 stats[64];
2707 } __packed;
2708
2709 #define MWL8K_STAT_ACK_FAILURE  9
2710 #define MWL8K_STAT_RTS_FAILURE  12
2711 #define MWL8K_STAT_FCS_ERROR    24
2712 #define MWL8K_STAT_RTS_SUCCESS  11
2713
2714 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2715                               struct ieee80211_low_level_stats *stats)
2716 {
2717         struct mwl8k_cmd_get_stat *cmd;
2718         int rc;
2719
2720         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2721         if (cmd == NULL)
2722                 return -ENOMEM;
2723
2724         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2725         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2726
2727         rc = mwl8k_post_cmd(hw, &cmd->header);
2728         if (!rc) {
2729                 stats->dot11ACKFailureCount =
2730                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2731                 stats->dot11RTSFailureCount =
2732                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2733                 stats->dot11FCSErrorCount =
2734                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2735                 stats->dot11RTSSuccessCount =
2736                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2737         }
2738         kfree(cmd);
2739
2740         return rc;
2741 }
2742
2743 /*
2744  * CMD_RADIO_CONTROL.
2745  */
2746 struct mwl8k_cmd_radio_control {
2747         struct mwl8k_cmd_pkt header;
2748         __le16 action;
2749         __le16 control;
2750         __le16 radio_on;
2751 } __packed;
2752
2753 static int
2754 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2755 {
2756         struct mwl8k_priv *priv = hw->priv;
2757         struct mwl8k_cmd_radio_control *cmd;
2758         int rc;
2759
2760         if (enable == priv->radio_on && !force)
2761                 return 0;
2762
2763         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2764         if (cmd == NULL)
2765                 return -ENOMEM;
2766
2767         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2768         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2769         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2770         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2771         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2772
2773         rc = mwl8k_post_cmd(hw, &cmd->header);
2774         kfree(cmd);
2775
2776         if (!rc)
2777                 priv->radio_on = enable;
2778
2779         return rc;
2780 }
2781
2782 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2783 {
2784         return mwl8k_cmd_radio_control(hw, 0, 0);
2785 }
2786
2787 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2788 {
2789         return mwl8k_cmd_radio_control(hw, 1, 0);
2790 }
2791
2792 static int
2793 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2794 {
2795         struct mwl8k_priv *priv = hw->priv;
2796
2797         priv->radio_short_preamble = short_preamble;
2798
2799         return mwl8k_cmd_radio_control(hw, 1, 1);
2800 }
2801
2802 /*
2803  * CMD_RF_TX_POWER.
2804  */
2805 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2806
2807 struct mwl8k_cmd_rf_tx_power {
2808         struct mwl8k_cmd_pkt header;
2809         __le16 action;
2810         __le16 support_level;
2811         __le16 current_level;
2812         __le16 reserved;
2813         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2814 } __packed;
2815
2816 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2817 {
2818         struct mwl8k_cmd_rf_tx_power *cmd;
2819         int rc;
2820
2821         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2822         if (cmd == NULL)
2823                 return -ENOMEM;
2824
2825         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2826         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2827         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2828         cmd->support_level = cpu_to_le16(dBm);
2829
2830         rc = mwl8k_post_cmd(hw, &cmd->header);
2831         kfree(cmd);
2832
2833         return rc;
2834 }
2835
2836 /*
2837  * CMD_TX_POWER.
2838  */
2839 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2840
2841 struct mwl8k_cmd_tx_power {
2842         struct mwl8k_cmd_pkt header;
2843         __le16 action;
2844         __le16 band;
2845         __le16 channel;
2846         __le16 bw;
2847         __le16 sub_ch;
2848         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2849 } __packed;
2850
2851 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2852                                      struct ieee80211_conf *conf,
2853                                      unsigned short pwr)
2854 {
2855         struct ieee80211_channel *channel = conf->channel;
2856         struct mwl8k_cmd_tx_power *cmd;
2857         int rc;
2858         int i;
2859
2860         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2861         if (cmd == NULL)
2862                 return -ENOMEM;
2863
2864         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2865         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2866         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2867
2868         if (channel->band == IEEE80211_BAND_2GHZ)
2869                 cmd->band = cpu_to_le16(0x1);
2870         else if (channel->band == IEEE80211_BAND_5GHZ)
2871                 cmd->band = cpu_to_le16(0x4);
2872
2873         cmd->channel = cpu_to_le16(channel->hw_value);
2874
2875         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2876             conf->channel_type == NL80211_CHAN_HT20) {
2877                 cmd->bw = cpu_to_le16(0x2);
2878         } else {
2879                 cmd->bw = cpu_to_le16(0x4);
2880                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2881                         cmd->sub_ch = cpu_to_le16(0x3);
2882                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2883                         cmd->sub_ch = cpu_to_le16(0x1);
2884         }
2885
2886         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2887                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2888
2889         rc = mwl8k_post_cmd(hw, &cmd->header);
2890         kfree(cmd);
2891
2892         return rc;
2893 }
2894
2895 /*
2896  * CMD_RF_ANTENNA.
2897  */
2898 struct mwl8k_cmd_rf_antenna {
2899         struct mwl8k_cmd_pkt header;
2900         __le16 antenna;
2901         __le16 mode;
2902 } __packed;
2903
2904 #define MWL8K_RF_ANTENNA_RX             1
2905 #define MWL8K_RF_ANTENNA_TX             2
2906
2907 static int
2908 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2909 {
2910         struct mwl8k_cmd_rf_antenna *cmd;
2911         int rc;
2912
2913         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2914         if (cmd == NULL)
2915                 return -ENOMEM;
2916
2917         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2918         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2919         cmd->antenna = cpu_to_le16(antenna);
2920         cmd->mode = cpu_to_le16(mask);
2921
2922         rc = mwl8k_post_cmd(hw, &cmd->header);
2923         kfree(cmd);
2924
2925         return rc;
2926 }
2927
2928 /*
2929  * CMD_SET_BEACON.
2930  */
2931 struct mwl8k_cmd_set_beacon {
2932         struct mwl8k_cmd_pkt header;
2933         __le16 beacon_len;
2934         __u8 beacon[0];
2935 };
2936
2937 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2938                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2939 {
2940         struct mwl8k_cmd_set_beacon *cmd;
2941         int rc;
2942
2943         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2944         if (cmd == NULL)
2945                 return -ENOMEM;
2946
2947         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2948         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2949         cmd->beacon_len = cpu_to_le16(len);
2950         memcpy(cmd->beacon, beacon, len);
2951
2952         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2953         kfree(cmd);
2954
2955         return rc;
2956 }
2957
2958 /*
2959  * CMD_SET_PRE_SCAN.
2960  */
2961 struct mwl8k_cmd_set_pre_scan {
2962         struct mwl8k_cmd_pkt header;
2963 } __packed;
2964
2965 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2966 {
2967         struct mwl8k_cmd_set_pre_scan *cmd;
2968         int rc;
2969
2970         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2971         if (cmd == NULL)
2972                 return -ENOMEM;
2973
2974         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2975         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2976
2977         rc = mwl8k_post_cmd(hw, &cmd->header);
2978         kfree(cmd);
2979
2980         return rc;
2981 }
2982
2983 /*
2984  * CMD_SET_POST_SCAN.
2985  */
2986 struct mwl8k_cmd_set_post_scan {
2987         struct mwl8k_cmd_pkt header;
2988         __le32 isibss;
2989         __u8 bssid[ETH_ALEN];
2990 } __packed;
2991
2992 static int
2993 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2994 {
2995         struct mwl8k_cmd_set_post_scan *cmd;
2996         int rc;
2997
2998         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2999         if (cmd == NULL)
3000                 return -ENOMEM;
3001
3002         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3003         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3004         cmd->isibss = 0;
3005         memcpy(cmd->bssid, mac, ETH_ALEN);
3006
3007         rc = mwl8k_post_cmd(hw, &cmd->header);
3008         kfree(cmd);
3009
3010         return rc;
3011 }
3012
3013 /*
3014  * CMD_SET_RF_CHANNEL.
3015  */
3016 struct mwl8k_cmd_set_rf_channel {
3017         struct mwl8k_cmd_pkt header;
3018         __le16 action;
3019         __u8 current_channel;
3020         __le32 channel_flags;
3021 } __packed;
3022
3023 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3024                                     struct ieee80211_conf *conf)
3025 {
3026         struct ieee80211_channel *channel = conf->channel;
3027         struct mwl8k_cmd_set_rf_channel *cmd;
3028         int rc;
3029
3030         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3031         if (cmd == NULL)
3032                 return -ENOMEM;
3033
3034         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3035         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3036         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3037         cmd->current_channel = channel->hw_value;
3038
3039         if (channel->band == IEEE80211_BAND_2GHZ)
3040                 cmd->channel_flags |= cpu_to_le32(0x00000001);
3041         else if (channel->band == IEEE80211_BAND_5GHZ)
3042                 cmd->channel_flags |= cpu_to_le32(0x00000004);
3043
3044         if (conf->channel_type == NL80211_CHAN_NO_HT ||
3045             conf->channel_type == NL80211_CHAN_HT20)
3046                 cmd->channel_flags |= cpu_to_le32(0x00000080);
3047         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
3048                 cmd->channel_flags |= cpu_to_le32(0x000001900);
3049         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
3050                 cmd->channel_flags |= cpu_to_le32(0x000000900);
3051
3052         rc = mwl8k_post_cmd(hw, &cmd->header);
3053         kfree(cmd);
3054
3055         return rc;
3056 }
3057
3058 /*
3059  * CMD_SET_AID.
3060  */
3061 #define MWL8K_FRAME_PROT_DISABLED                       0x00
3062 #define MWL8K_FRAME_PROT_11G                            0x07
3063 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
3064 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
3065
3066 struct mwl8k_cmd_update_set_aid {
3067         struct  mwl8k_cmd_pkt header;
3068         __le16  aid;
3069
3070          /* AP's MAC address (BSSID) */
3071         __u8    bssid[ETH_ALEN];
3072         __le16  protection_mode;
3073         __u8    supp_rates[14];
3074 } __packed;
3075
3076 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3077 {
3078         int i;
3079         int j;
3080
3081         /*
3082          * Clear nonstandard rates 4 and 13.
3083          */
3084         mask &= 0x1fef;
3085
3086         for (i = 0, j = 0; i < 14; i++) {
3087                 if (mask & (1 << i))
3088                         rates[j++] = mwl8k_rates_24[i].hw_value;
3089         }
3090 }
3091
3092 static int
3093 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3094                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3095 {
3096         struct mwl8k_cmd_update_set_aid *cmd;
3097         u16 prot_mode;
3098         int rc;
3099
3100         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3101         if (cmd == NULL)
3102                 return -ENOMEM;
3103
3104         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3105         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3106         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3107         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3108
3109         if (vif->bss_conf.use_cts_prot) {
3110                 prot_mode = MWL8K_FRAME_PROT_11G;
3111         } else {
3112                 switch (vif->bss_conf.ht_operation_mode &
3113                         IEEE80211_HT_OP_MODE_PROTECTION) {
3114                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3115                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3116                         break;
3117                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3118                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3119                         break;
3120                 default:
3121                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3122                         break;
3123                 }
3124         }
3125         cmd->protection_mode = cpu_to_le16(prot_mode);
3126
3127         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3128
3129         rc = mwl8k_post_cmd(hw, &cmd->header);
3130         kfree(cmd);
3131
3132         return rc;
3133 }
3134
3135 /*
3136  * CMD_SET_RATE.
3137  */
3138 struct mwl8k_cmd_set_rate {
3139         struct  mwl8k_cmd_pkt header;
3140         __u8    legacy_rates[14];
3141
3142         /* Bitmap for supported MCS codes.  */
3143         __u8    mcs_set[16];
3144         __u8    reserved[16];
3145 } __packed;
3146
3147 static int
3148 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3149                    u32 legacy_rate_mask, u8 *mcs_rates)
3150 {
3151         struct mwl8k_cmd_set_rate *cmd;
3152         int rc;
3153
3154         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3155         if (cmd == NULL)
3156                 return -ENOMEM;
3157
3158         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3159         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3160         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3161         memcpy(cmd->mcs_set, mcs_rates, 16);
3162
3163         rc = mwl8k_post_cmd(hw, &cmd->header);
3164         kfree(cmd);
3165
3166         return rc;
3167 }
3168
3169 /*
3170  * CMD_FINALIZE_JOIN.
3171  */
3172 #define MWL8K_FJ_BEACON_MAXLEN  128
3173
3174 struct mwl8k_cmd_finalize_join {
3175         struct mwl8k_cmd_pkt header;
3176         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3177         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3178 } __packed;
3179
3180 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3181                                    int framelen, int dtim)
3182 {
3183         struct mwl8k_cmd_finalize_join *cmd;
3184         struct ieee80211_mgmt *payload = frame;
3185         int payload_len;
3186         int rc;
3187
3188         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3189         if (cmd == NULL)
3190                 return -ENOMEM;
3191
3192         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3193         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3194         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3195
3196         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3197         if (payload_len < 0)
3198                 payload_len = 0;
3199         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3200                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3201
3202         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3203
3204         rc = mwl8k_post_cmd(hw, &cmd->header);
3205         kfree(cmd);
3206
3207         return rc;
3208 }
3209
3210 /*
3211  * CMD_SET_RTS_THRESHOLD.
3212  */
3213 struct mwl8k_cmd_set_rts_threshold {
3214         struct mwl8k_cmd_pkt header;
3215         __le16 action;
3216         __le16 threshold;
3217 } __packed;
3218
3219 static int
3220 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3221 {
3222         struct mwl8k_cmd_set_rts_threshold *cmd;
3223         int rc;
3224
3225         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3226         if (cmd == NULL)
3227                 return -ENOMEM;
3228
3229         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3230         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3231         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3232         cmd->threshold = cpu_to_le16(rts_thresh);
3233
3234         rc = mwl8k_post_cmd(hw, &cmd->header);
3235         kfree(cmd);
3236
3237         return rc;
3238 }
3239
3240 /*
3241  * CMD_SET_SLOT.
3242  */
3243 struct mwl8k_cmd_set_slot {
3244         struct mwl8k_cmd_pkt header;
3245         __le16 action;
3246         __u8 short_slot;
3247 } __packed;
3248
3249 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3250 {
3251         struct mwl8k_cmd_set_slot *cmd;
3252         int rc;
3253
3254         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3255         if (cmd == NULL)
3256                 return -ENOMEM;
3257
3258         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3259         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3260         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3261         cmd->short_slot = short_slot_time;
3262
3263         rc = mwl8k_post_cmd(hw, &cmd->header);
3264         kfree(cmd);
3265
3266         return rc;
3267 }
3268
3269 /*
3270  * CMD_SET_EDCA_PARAMS.
3271  */
3272 struct mwl8k_cmd_set_edca_params {
3273         struct mwl8k_cmd_pkt header;
3274
3275         /* See MWL8K_SET_EDCA_XXX below */
3276         __le16 action;
3277
3278         /* TX opportunity in units of 32 us */
3279         __le16 txop;
3280
3281         union {
3282                 struct {
3283                         /* Log exponent of max contention period: 0...15 */
3284                         __le32 log_cw_max;
3285
3286                         /* Log exponent of min contention period: 0...15 */
3287                         __le32 log_cw_min;
3288
3289                         /* Adaptive interframe spacing in units of 32us */
3290                         __u8 aifs;
3291
3292                         /* TX queue to configure */
3293                         __u8 txq;
3294                 } ap;
3295                 struct {
3296                         /* Log exponent of max contention period: 0...15 */
3297                         __u8 log_cw_max;
3298
3299                         /* Log exponent of min contention period: 0...15 */
3300                         __u8 log_cw_min;
3301
3302                         /* Adaptive interframe spacing in units of 32us */
3303                         __u8 aifs;
3304
3305                         /* TX queue to configure */
3306                         __u8 txq;
3307                 } sta;
3308         };
3309 } __packed;
3310
3311 #define MWL8K_SET_EDCA_CW       0x01
3312 #define MWL8K_SET_EDCA_TXOP     0x02
3313 #define MWL8K_SET_EDCA_AIFS     0x04
3314
3315 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3316                                  MWL8K_SET_EDCA_TXOP | \
3317                                  MWL8K_SET_EDCA_AIFS)
3318
3319 static int
3320 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3321                           __u16 cw_min, __u16 cw_max,
3322                           __u8 aifs, __u16 txop)
3323 {
3324         struct mwl8k_priv *priv = hw->priv;
3325         struct mwl8k_cmd_set_edca_params *cmd;
3326         int rc;
3327
3328         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3329         if (cmd == NULL)
3330                 return -ENOMEM;
3331
3332         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3333         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3334         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3335         cmd->txop = cpu_to_le16(txop);
3336         if (priv->ap_fw) {
3337                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3338                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3339                 cmd->ap.aifs = aifs;
3340                 cmd->ap.txq = qnum;
3341         } else {
3342                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3343                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3344                 cmd->sta.aifs = aifs;
3345                 cmd->sta.txq = qnum;
3346         }
3347
3348         rc = mwl8k_post_cmd(hw, &cmd->header);
3349         kfree(cmd);
3350
3351         return rc;
3352 }
3353
3354 /*
3355  * CMD_SET_WMM_MODE.
3356  */
3357 struct mwl8k_cmd_set_wmm_mode {
3358         struct mwl8k_cmd_pkt header;
3359         __le16 action;
3360 } __packed;
3361
3362 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3363 {
3364         struct mwl8k_priv *priv = hw->priv;
3365         struct mwl8k_cmd_set_wmm_mode *cmd;
3366         int rc;
3367
3368         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3369         if (cmd == NULL)
3370                 return -ENOMEM;
3371
3372         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3373         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3374         cmd->action = cpu_to_le16(!!enable);
3375
3376         rc = mwl8k_post_cmd(hw, &cmd->header);
3377         kfree(cmd);
3378
3379         if (!rc)
3380                 priv->wmm_enabled = enable;
3381
3382         return rc;
3383 }
3384
3385 /*
3386  * CMD_MIMO_CONFIG.
3387  */
3388 struct mwl8k_cmd_mimo_config {
3389         struct mwl8k_cmd_pkt header;
3390         __le32 action;
3391         __u8 rx_antenna_map;
3392         __u8 tx_antenna_map;
3393 } __packed;
3394
3395 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3396 {
3397         struct mwl8k_cmd_mimo_config *cmd;
3398         int rc;
3399
3400         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3401         if (cmd == NULL)
3402                 return -ENOMEM;
3403
3404         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3405         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3406         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3407         cmd->rx_antenna_map = rx;
3408         cmd->tx_antenna_map = tx;
3409
3410         rc = mwl8k_post_cmd(hw, &cmd->header);
3411         kfree(cmd);
3412
3413         return rc;
3414 }
3415
3416 /*
3417  * CMD_USE_FIXED_RATE (STA version).
3418  */
3419 struct mwl8k_cmd_use_fixed_rate_sta {
3420         struct mwl8k_cmd_pkt header;
3421         __le32 action;
3422         __le32 allow_rate_drop;
3423         __le32 num_rates;
3424         struct {
3425                 __le32 is_ht_rate;
3426                 __le32 enable_retry;
3427                 __le32 rate;
3428                 __le32 retry_count;
3429         } rate_entry[8];
3430         __le32 rate_type;
3431         __le32 reserved1;
3432         __le32 reserved2;
3433 } __packed;
3434
3435 #define MWL8K_USE_AUTO_RATE     0x0002
3436 #define MWL8K_UCAST_RATE        0
3437
3438 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3439 {
3440         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3441         int rc;
3442
3443         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3444         if (cmd == NULL)
3445                 return -ENOMEM;
3446
3447         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3448         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3449         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3450         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3451
3452         rc = mwl8k_post_cmd(hw, &cmd->header);
3453         kfree(cmd);
3454
3455         return rc;
3456 }
3457
3458 /*
3459  * CMD_USE_FIXED_RATE (AP version).
3460  */
3461 struct mwl8k_cmd_use_fixed_rate_ap {
3462         struct mwl8k_cmd_pkt header;
3463         __le32 action;
3464         __le32 allow_rate_drop;
3465         __le32 num_rates;
3466         struct mwl8k_rate_entry_ap {
3467                 __le32 is_ht_rate;
3468                 __le32 enable_retry;
3469                 __le32 rate;
3470                 __le32 retry_count;
3471         } rate_entry[4];
3472         u8 multicast_rate;
3473         u8 multicast_rate_type;
3474         u8 management_rate;
3475 } __packed;
3476
3477 static int
3478 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3479 {
3480         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3481         int rc;
3482
3483         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3484         if (cmd == NULL)
3485                 return -ENOMEM;
3486
3487         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3488         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3489         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3490         cmd->multicast_rate = mcast;
3491         cmd->management_rate = mgmt;
3492
3493         rc = mwl8k_post_cmd(hw, &cmd->header);
3494         kfree(cmd);
3495
3496         return rc;
3497 }
3498
3499 /*
3500  * CMD_ENABLE_SNIFFER.
3501  */
3502 struct mwl8k_cmd_enable_sniffer {
3503         struct mwl8k_cmd_pkt header;
3504         __le32 action;
3505 } __packed;
3506
3507 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3508 {
3509         struct mwl8k_cmd_enable_sniffer *cmd;
3510         int rc;
3511
3512         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3513         if (cmd == NULL)
3514                 return -ENOMEM;
3515
3516         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3517         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3518         cmd->action = cpu_to_le32(!!enable);
3519
3520         rc = mwl8k_post_cmd(hw, &cmd->header);
3521         kfree(cmd);
3522
3523         return rc;
3524 }
3525
3526 struct mwl8k_cmd_update_mac_addr {
3527         struct mwl8k_cmd_pkt header;
3528         union {
3529                 struct {
3530                         __le16 mac_type;
3531                         __u8 mac_addr[ETH_ALEN];
3532                 } mbss;
3533                 __u8 mac_addr[ETH_ALEN];
3534         };
3535 } __packed;
3536
3537 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3538 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3539 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3540 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3541
3542 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3543                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3544 {
3545         struct mwl8k_priv *priv = hw->priv;
3546         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3547         struct mwl8k_cmd_update_mac_addr *cmd;
3548         int mac_type;
3549         int rc;
3550
3551         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3552         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3553                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3554                         if (priv->ap_fw)
3555                                 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3556                         else
3557                                 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3558                 else
3559                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3560         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3561                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3562                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3563                 else
3564                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3565         }
3566
3567         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3568         if (cmd == NULL)
3569                 return -ENOMEM;
3570
3571         if (set)
3572                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3573         else
3574                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3575
3576         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3577         if (priv->ap_fw) {
3578                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3579                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3580         } else {
3581                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3582         }
3583
3584         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3585         kfree(cmd);
3586
3587         return rc;
3588 }
3589
3590 /*
3591  * MWL8K_CMD_SET_MAC_ADDR.
3592  */
3593 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3594                                   struct ieee80211_vif *vif, u8 *mac)
3595 {
3596         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3597 }
3598
3599 /*
3600  * MWL8K_CMD_DEL_MAC_ADDR.
3601  */
3602 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3603                                   struct ieee80211_vif *vif, u8 *mac)
3604 {
3605         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3606 }
3607
3608 /*
3609  * CMD_SET_RATEADAPT_MODE.
3610  */
3611 struct mwl8k_cmd_set_rate_adapt_mode {
3612         struct mwl8k_cmd_pkt header;
3613         __le16 action;
3614         __le16 mode;
3615 } __packed;
3616
3617 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3618 {
3619         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3620         int rc;
3621
3622         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3623         if (cmd == NULL)
3624                 return -ENOMEM;
3625
3626         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3627         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3628         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3629         cmd->mode = cpu_to_le16(mode);
3630
3631         rc = mwl8k_post_cmd(hw, &cmd->header);
3632         kfree(cmd);
3633
3634         return rc;
3635 }
3636
3637 /*
3638  * CMD_GET_WATCHDOG_BITMAP.
3639  */
3640 struct mwl8k_cmd_get_watchdog_bitmap {
3641         struct mwl8k_cmd_pkt header;
3642         u8      bitmap;
3643 } __packed;
3644
3645 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3646 {
3647         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3648         int rc;
3649
3650         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3651         if (cmd == NULL)
3652                 return -ENOMEM;
3653
3654         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3655         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3656
3657         rc = mwl8k_post_cmd(hw, &cmd->header);
3658         if (!rc)
3659                 *bitmap = cmd->bitmap;
3660
3661         kfree(cmd);
3662
3663         return rc;
3664 }
3665
3666 #define MWL8K_WMM_QUEUE_NUMBER  3
3667
3668 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3669                              u8 idx);
3670
3671 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3672 {
3673         int rc;
3674         u8 bitmap = 0, stream_index;
3675         struct mwl8k_ampdu_stream *streams;
3676         struct mwl8k_priv *priv =
3677                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3678         struct ieee80211_hw *hw = priv->hw;
3679         int i;
3680         u32 status = 0;
3681
3682         mwl8k_fw_lock(hw);
3683
3684         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3685         if (rc)
3686                 goto done;
3687
3688         spin_lock(&priv->stream_lock);
3689
3690         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3691         for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3692                 if (bitmap & (1 << i)) {
3693                         stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3694                                        TOTAL_HW_TX_QUEUES;
3695                         streams = &priv->ampdu[stream_index];
3696                         if (streams->state == AMPDU_STREAM_ACTIVE) {
3697                                 ieee80211_stop_tx_ba_session(streams->sta,
3698                                                              streams->tid);
3699                                 spin_unlock(&priv->stream_lock);
3700                                 mwl8k_destroy_ba(hw, stream_index);
3701                                 spin_lock(&priv->stream_lock);
3702                         }
3703                 }
3704         }
3705
3706         spin_unlock(&priv->stream_lock);
3707 done:
3708         atomic_dec(&priv->watchdog_event_pending);
3709         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3710         iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3711                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3712         mwl8k_fw_unlock(hw);
3713         return;
3714 }
3715
3716
3717 /*
3718  * CMD_BSS_START.
3719  */
3720 struct mwl8k_cmd_bss_start {
3721         struct mwl8k_cmd_pkt header;
3722         __le32 enable;
3723 } __packed;
3724
3725 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3726                                struct ieee80211_vif *vif, int enable)
3727 {
3728         struct mwl8k_cmd_bss_start *cmd;
3729         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3730         struct mwl8k_priv *priv = hw->priv;
3731         int rc;
3732
3733         if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3734                 return 0;
3735
3736         if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3737                 return 0;
3738
3739         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3740         if (cmd == NULL)
3741                 return -ENOMEM;
3742
3743         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3744         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3745         cmd->enable = cpu_to_le32(enable);
3746
3747         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3748         kfree(cmd);
3749
3750         if (!rc) {
3751                 if (enable)
3752                         priv->running_bsses |= (1 << mwl8k_vif->macid);
3753                 else
3754                         priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3755         }
3756         return rc;
3757 }
3758
3759 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3760 {
3761         struct mwl8k_priv *priv = hw->priv;
3762         struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3763         struct ieee80211_vif *vif;
3764
3765         list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3766                 vif = mwl8k_vif->vif;
3767
3768                 if (!(bitmap & (1 << mwl8k_vif->macid)))
3769                         continue;
3770
3771                 if (vif->type == NL80211_IFTYPE_AP)
3772                         mwl8k_cmd_bss_start(hw, vif, enable);
3773         }
3774 }
3775 /*
3776  * CMD_BASTREAM.
3777  */
3778
3779 /*
3780  * UPSTREAM is tx direction
3781  */
3782 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3783 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3784
3785 enum ba_stream_action_type {
3786         MWL8K_BA_CREATE,
3787         MWL8K_BA_UPDATE,
3788         MWL8K_BA_DESTROY,
3789         MWL8K_BA_FLUSH,
3790         MWL8K_BA_CHECK,
3791 };
3792
3793
3794 struct mwl8k_create_ba_stream {
3795         __le32  flags;
3796         __le32  idle_thrs;
3797         __le32  bar_thrs;
3798         __le32  window_size;
3799         u8      peer_mac_addr[6];
3800         u8      dialog_token;
3801         u8      tid;
3802         u8      queue_id;
3803         u8      param_info;
3804         __le32  ba_context;
3805         u8      reset_seq_no_flag;
3806         __le16  curr_seq_no;
3807         u8      sta_src_mac_addr[6];
3808 } __packed;
3809
3810 struct mwl8k_destroy_ba_stream {
3811         __le32  flags;
3812         __le32  ba_context;
3813 } __packed;
3814
3815 struct mwl8k_cmd_bastream {
3816         struct mwl8k_cmd_pkt    header;
3817         __le32  action;
3818         union {
3819                 struct mwl8k_create_ba_stream   create_params;
3820                 struct mwl8k_destroy_ba_stream  destroy_params;
3821         };
3822 } __packed;
3823
3824 static int
3825 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3826                struct ieee80211_vif *vif)
3827 {
3828         struct mwl8k_cmd_bastream *cmd;
3829         int rc;
3830
3831         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3832         if (cmd == NULL)
3833                 return -ENOMEM;
3834
3835         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3836         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3837
3838         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3839
3840         cmd->create_params.queue_id = stream->idx;
3841         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3842                ETH_ALEN);
3843         cmd->create_params.tid = stream->tid;
3844
3845         cmd->create_params.flags =
3846                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3847                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3848
3849         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3850
3851         kfree(cmd);
3852
3853         return rc;
3854 }
3855
3856 static int
3857 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3858                 u8 buf_size, struct ieee80211_vif *vif)
3859 {
3860         struct mwl8k_cmd_bastream *cmd;
3861         int rc;
3862
3863         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3864         if (cmd == NULL)
3865                 return -ENOMEM;
3866
3867
3868         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3869         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3870
3871         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3872
3873         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3874         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3875         cmd->create_params.queue_id = stream->idx;
3876
3877         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3878         cmd->create_params.tid = stream->tid;
3879         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3880         cmd->create_params.reset_seq_no_flag = 1;
3881
3882         cmd->create_params.param_info =
3883                 (stream->sta->ht_cap.ampdu_factor &
3884                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3885                 ((stream->sta->ht_cap.ampdu_density << 2) &
3886                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3887
3888         cmd->create_params.flags =
3889                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3890                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3891
3892         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3893
3894         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3895                 stream->sta->addr, stream->tid);
3896         kfree(cmd);
3897
3898         return rc;
3899 }
3900
3901 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3902                              u8 idx)
3903 {
3904         struct mwl8k_cmd_bastream *cmd;
3905
3906         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3907         if (cmd == NULL)
3908                 return;
3909
3910         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3911         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3912         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3913
3914         cmd->destroy_params.ba_context = cpu_to_le32(idx);
3915         mwl8k_post_cmd(hw, &cmd->header);
3916
3917         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
3918
3919         kfree(cmd);
3920 }
3921
3922 /*
3923  * CMD_SET_NEW_STN.
3924  */
3925 struct mwl8k_cmd_set_new_stn {
3926         struct mwl8k_cmd_pkt header;
3927         __le16 aid;
3928         __u8 mac_addr[6];
3929         __le16 stn_id;
3930         __le16 action;
3931         __le16 rsvd;
3932         __le32 legacy_rates;
3933         __u8 ht_rates[4];
3934         __le16 cap_info;
3935         __le16 ht_capabilities_info;
3936         __u8 mac_ht_param_info;
3937         __u8 rev;
3938         __u8 control_channel;
3939         __u8 add_channel;
3940         __le16 op_mode;
3941         __le16 stbc;
3942         __u8 add_qos_info;
3943         __u8 is_qos_sta;
3944         __le32 fw_sta_ptr;
3945 } __packed;
3946
3947 #define MWL8K_STA_ACTION_ADD            0
3948 #define MWL8K_STA_ACTION_REMOVE         2
3949
3950 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3951                                      struct ieee80211_vif *vif,
3952                                      struct ieee80211_sta *sta)
3953 {
3954         struct mwl8k_cmd_set_new_stn *cmd;
3955         u32 rates;
3956         int rc;
3957
3958         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3959         if (cmd == NULL)
3960                 return -ENOMEM;
3961
3962         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3963         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3964         cmd->aid = cpu_to_le16(sta->aid);
3965         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3966         cmd->stn_id = cpu_to_le16(sta->aid);
3967         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3968         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3969                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3970         else
3971                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3972         cmd->legacy_rates = cpu_to_le32(rates);
3973         if (sta->ht_cap.ht_supported) {
3974                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3975                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3976                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3977                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3978                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3979                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3980                         ((sta->ht_cap.ampdu_density & 7) << 2);
3981                 cmd->is_qos_sta = 1;
3982         }
3983
3984         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3985         kfree(cmd);
3986
3987         return rc;
3988 }
3989
3990 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3991                                           struct ieee80211_vif *vif)
3992 {
3993         struct mwl8k_cmd_set_new_stn *cmd;
3994         int rc;
3995
3996         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3997         if (cmd == NULL)
3998                 return -ENOMEM;
3999
4000         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4001         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4002         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4003
4004         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4005         kfree(cmd);
4006
4007         return rc;
4008 }
4009
4010 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4011                                      struct ieee80211_vif *vif, u8 *addr)
4012 {
4013         struct mwl8k_cmd_set_new_stn *cmd;
4014         struct mwl8k_priv *priv = hw->priv;
4015         int rc, i;
4016         u8 idx;
4017
4018         spin_lock(&priv->stream_lock);
4019         /* Destroy any active ampdu streams for this sta */
4020         for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4021                 struct mwl8k_ampdu_stream *s;
4022                 s = &priv->ampdu[i];
4023                 if (s->state != AMPDU_NO_STREAM) {
4024                         if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4025                                 if (s->state == AMPDU_STREAM_ACTIVE) {
4026                                         idx = s->idx;
4027                                         spin_unlock(&priv->stream_lock);
4028                                         mwl8k_destroy_ba(hw, idx);
4029                                         spin_lock(&priv->stream_lock);
4030                                 } else if (s->state == AMPDU_STREAM_NEW) {
4031                                         mwl8k_remove_stream(hw, s);
4032                                 }
4033                         }
4034                 }
4035         }
4036
4037         spin_unlock(&priv->stream_lock);
4038
4039         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4040         if (cmd == NULL)
4041                 return -ENOMEM;
4042
4043         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4044         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4045         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4046         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4047
4048         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4049         kfree(cmd);
4050
4051         return rc;
4052 }
4053
4054 /*
4055  * CMD_UPDATE_ENCRYPTION.
4056  */
4057
4058 #define MAX_ENCR_KEY_LENGTH     16
4059 #define MIC_KEY_LENGTH          8
4060
4061 struct mwl8k_cmd_update_encryption {
4062         struct mwl8k_cmd_pkt header;
4063
4064         __le32 action;
4065         __le32 reserved;
4066         __u8 mac_addr[6];
4067         __u8 encr_type;
4068
4069 } __packed;
4070
4071 struct mwl8k_cmd_set_key {
4072         struct mwl8k_cmd_pkt header;
4073
4074         __le32 action;
4075         __le32 reserved;
4076         __le16 length;
4077         __le16 key_type_id;
4078         __le32 key_info;
4079         __le32 key_id;
4080         __le16 key_len;
4081         __u8 key_material[MAX_ENCR_KEY_LENGTH];
4082         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4083         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4084         __le16 tkip_rsc_low;
4085         __le32 tkip_rsc_high;
4086         __le16 tkip_tsc_low;
4087         __le32 tkip_tsc_high;
4088         __u8 mac_addr[6];
4089 } __packed;
4090
4091 enum {
4092         MWL8K_ENCR_ENABLE,
4093         MWL8K_ENCR_SET_KEY,
4094         MWL8K_ENCR_REMOVE_KEY,
4095         MWL8K_ENCR_SET_GROUP_KEY,
4096 };
4097
4098 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
4099 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
4100 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
4101 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
4102 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
4103
4104 enum {
4105         MWL8K_ALG_WEP,
4106         MWL8K_ALG_TKIP,
4107         MWL8K_ALG_CCMP,
4108 };
4109
4110 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
4111 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
4112 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
4113 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
4114 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
4115
4116 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4117                                               struct ieee80211_vif *vif,
4118                                               u8 *addr,
4119                                               u8 encr_type)
4120 {
4121         struct mwl8k_cmd_update_encryption *cmd;
4122         int rc;
4123
4124         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4125         if (cmd == NULL)
4126                 return -ENOMEM;
4127
4128         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4129         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4130         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4131         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4132         cmd->encr_type = encr_type;
4133
4134         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4135         kfree(cmd);
4136
4137         return rc;
4138 }
4139
4140 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4141                                                 u8 *addr,
4142                                                 struct ieee80211_key_conf *key)
4143 {
4144         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4145         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4146         cmd->length = cpu_to_le16(sizeof(*cmd) -
4147                                 offsetof(struct mwl8k_cmd_set_key, length));
4148         cmd->key_id = cpu_to_le32(key->keyidx);
4149         cmd->key_len = cpu_to_le16(key->keylen);
4150         memcpy(cmd->mac_addr, addr, ETH_ALEN);
4151
4152         switch (key->cipher) {
4153         case WLAN_CIPHER_SUITE_WEP40:
4154         case WLAN_CIPHER_SUITE_WEP104:
4155                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4156                 if (key->keyidx == 0)
4157                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4158
4159                 break;
4160         case WLAN_CIPHER_SUITE_TKIP:
4161                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4162                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4163                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4164                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4165                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4166                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4167                 break;
4168         case WLAN_CIPHER_SUITE_CCMP:
4169                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4170                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4171                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4172                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4173                 break;
4174         default:
4175                 return -ENOTSUPP;
4176         }
4177
4178         return 0;
4179 }
4180
4181 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4182                                                 struct ieee80211_vif *vif,
4183                                                 u8 *addr,
4184                                                 struct ieee80211_key_conf *key)
4185 {
4186         struct mwl8k_cmd_set_key *cmd;
4187         int rc;
4188         int keymlen;
4189         u32 action;
4190         u8 idx;
4191         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4192
4193         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4194         if (cmd == NULL)
4195                 return -ENOMEM;
4196
4197         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4198         if (rc < 0)
4199                 goto done;
4200
4201         idx = key->keyidx;
4202
4203         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4204                 action = MWL8K_ENCR_SET_KEY;
4205         else
4206                 action = MWL8K_ENCR_SET_GROUP_KEY;
4207
4208         switch (key->cipher) {
4209         case WLAN_CIPHER_SUITE_WEP40:
4210         case WLAN_CIPHER_SUITE_WEP104:
4211                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4212                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4213                                                 sizeof(*key) + key->keylen);
4214                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4215                 }
4216
4217                 keymlen = key->keylen;
4218                 action = MWL8K_ENCR_SET_KEY;
4219                 break;
4220         case WLAN_CIPHER_SUITE_TKIP:
4221                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4222                 break;
4223         case WLAN_CIPHER_SUITE_CCMP:
4224                 keymlen = key->keylen;
4225                 break;
4226         default:
4227                 rc = -ENOTSUPP;
4228                 goto done;
4229         }
4230
4231         memcpy(cmd->key_material, key->key, keymlen);
4232         cmd->action = cpu_to_le32(action);
4233
4234         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4235 done:
4236         kfree(cmd);
4237
4238         return rc;
4239 }
4240
4241 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4242                                                 struct ieee80211_vif *vif,
4243                                                 u8 *addr,
4244                                                 struct ieee80211_key_conf *key)
4245 {
4246         struct mwl8k_cmd_set_key *cmd;
4247         int rc;
4248         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4249
4250         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4251         if (cmd == NULL)
4252                 return -ENOMEM;
4253
4254         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4255         if (rc < 0)
4256                 goto done;
4257
4258         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4259                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4260                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4261
4262         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4263
4264         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4265 done:
4266         kfree(cmd);
4267
4268         return rc;
4269 }
4270
4271 static int mwl8k_set_key(struct ieee80211_hw *hw,
4272                          enum set_key_cmd cmd_param,
4273                          struct ieee80211_vif *vif,
4274                          struct ieee80211_sta *sta,
4275                          struct ieee80211_key_conf *key)
4276 {
4277         int rc = 0;
4278         u8 encr_type;
4279         u8 *addr;
4280         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4281         struct mwl8k_priv *priv = hw->priv;
4282
4283         if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4284                 return -EOPNOTSUPP;
4285
4286         if (sta == NULL)
4287                 addr = vif->addr;
4288         else
4289                 addr = sta->addr;
4290
4291         if (cmd_param == SET_KEY) {
4292                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4293                 if (rc)
4294                         goto out;
4295
4296                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4297                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4298                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4299                 else
4300                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4301
4302                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4303                                                                 encr_type);
4304                 if (rc)
4305                         goto out;
4306
4307                 mwl8k_vif->is_hw_crypto_enabled = true;
4308
4309         } else {
4310                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4311
4312                 if (rc)
4313                         goto out;
4314         }
4315 out:
4316         return rc;
4317 }
4318
4319 /*
4320  * CMD_UPDATE_STADB.
4321  */
4322 struct ewc_ht_info {
4323         __le16  control1;
4324         __le16  control2;
4325         __le16  control3;
4326 } __packed;
4327
4328 struct peer_capability_info {
4329         /* Peer type - AP vs. STA.  */
4330         __u8    peer_type;
4331
4332         /* Basic 802.11 capabilities from assoc resp.  */
4333         __le16  basic_caps;
4334
4335         /* Set if peer supports 802.11n high throughput (HT).  */
4336         __u8    ht_support;
4337
4338         /* Valid if HT is supported.  */
4339         __le16  ht_caps;
4340         __u8    extended_ht_caps;
4341         struct ewc_ht_info      ewc_info;
4342
4343         /* Legacy rate table. Intersection of our rates and peer rates.  */
4344         __u8    legacy_rates[12];
4345
4346         /* HT rate table. Intersection of our rates and peer rates.  */
4347         __u8    ht_rates[16];
4348         __u8    pad[16];
4349
4350         /* If set, interoperability mode, no proprietary extensions.  */
4351         __u8    interop;
4352         __u8    pad2;
4353         __u8    station_id;
4354         __le16  amsdu_enabled;
4355 } __packed;
4356
4357 struct mwl8k_cmd_update_stadb {
4358         struct mwl8k_cmd_pkt header;
4359
4360         /* See STADB_ACTION_TYPE */
4361         __le32  action;
4362
4363         /* Peer MAC address */
4364         __u8    peer_addr[ETH_ALEN];
4365
4366         __le32  reserved;
4367
4368         /* Peer info - valid during add/update.  */
4369         struct peer_capability_info     peer_info;
4370 } __packed;
4371
4372 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4373 #define MWL8K_STA_DB_DEL_ENTRY          2
4374
4375 /* Peer Entry flags - used to define the type of the peer node */
4376 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4377
4378 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4379                                       struct ieee80211_vif *vif,
4380                                       struct ieee80211_sta *sta)
4381 {
4382         struct mwl8k_cmd_update_stadb *cmd;
4383         struct peer_capability_info *p;
4384         u32 rates;
4385         int rc;
4386
4387         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4388         if (cmd == NULL)
4389                 return -ENOMEM;
4390
4391         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4392         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4393         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4394         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4395
4396         p = &cmd->peer_info;
4397         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4398         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4399         p->ht_support = sta->ht_cap.ht_supported;
4400         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4401         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4402                 ((sta->ht_cap.ampdu_density & 7) << 2);
4403         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4404                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4405         else
4406                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4407         legacy_rate_mask_to_array(p->legacy_rates, rates);
4408         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4409         p->interop = 1;
4410         p->amsdu_enabled = 0;
4411
4412         rc = mwl8k_post_cmd(hw, &cmd->header);
4413         if (!rc)
4414                 rc = p->station_id;
4415         kfree(cmd);
4416
4417         return rc;
4418 }
4419
4420 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4421                                       struct ieee80211_vif *vif, u8 *addr)
4422 {
4423         struct mwl8k_cmd_update_stadb *cmd;
4424         int rc;
4425
4426         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4427         if (cmd == NULL)
4428                 return -ENOMEM;
4429
4430         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4431         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4432         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4433         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4434
4435         rc = mwl8k_post_cmd(hw, &cmd->header);
4436         kfree(cmd);
4437
4438         return rc;
4439 }
4440
4441
4442 /*
4443  * Interrupt handling.
4444  */
4445 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4446 {
4447         struct ieee80211_hw *hw = dev_id;
4448         struct mwl8k_priv *priv = hw->priv;
4449         u32 status;
4450
4451         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4452         if (!status)
4453                 return IRQ_NONE;
4454
4455         if (status & MWL8K_A2H_INT_TX_DONE) {
4456                 status &= ~MWL8K_A2H_INT_TX_DONE;
4457                 tasklet_schedule(&priv->poll_tx_task);
4458         }
4459
4460         if (status & MWL8K_A2H_INT_RX_READY) {
4461                 status &= ~MWL8K_A2H_INT_RX_READY;
4462                 tasklet_schedule(&priv->poll_rx_task);
4463         }
4464
4465         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4466                 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4467                           priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4468
4469                 atomic_inc(&priv->watchdog_event_pending);
4470                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4471                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4472         }
4473
4474         if (status)
4475                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4476
4477         if (status & MWL8K_A2H_INT_OPC_DONE) {
4478                 if (priv->hostcmd_wait != NULL)
4479                         complete(priv->hostcmd_wait);
4480         }
4481
4482         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4483                 if (!mutex_is_locked(&priv->fw_mutex) &&
4484                     priv->radio_on && priv->pending_tx_pkts)
4485                         mwl8k_tx_start(priv);
4486         }
4487
4488         return IRQ_HANDLED;
4489 }
4490
4491 static void mwl8k_tx_poll(unsigned long data)
4492 {
4493         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4494         struct mwl8k_priv *priv = hw->priv;
4495         int limit;
4496         int i;
4497
4498         limit = 32;
4499
4500         spin_lock_bh(&priv->tx_lock);
4501
4502         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4503                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4504
4505         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4506                 complete(priv->tx_wait);
4507                 priv->tx_wait = NULL;
4508         }
4509
4510         spin_unlock_bh(&priv->tx_lock);
4511
4512         if (limit) {
4513                 writel(~MWL8K_A2H_INT_TX_DONE,
4514                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4515         } else {
4516                 tasklet_schedule(&priv->poll_tx_task);
4517         }
4518 }
4519
4520 static void mwl8k_rx_poll(unsigned long data)
4521 {
4522         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4523         struct mwl8k_priv *priv = hw->priv;
4524         int limit;
4525
4526         limit = 32;
4527         limit -= rxq_process(hw, 0, limit);
4528         limit -= rxq_refill(hw, 0, limit);
4529
4530         if (limit) {
4531                 writel(~MWL8K_A2H_INT_RX_READY,
4532                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4533         } else {
4534                 tasklet_schedule(&priv->poll_rx_task);
4535         }
4536 }
4537
4538
4539 /*
4540  * Core driver operations.
4541  */
4542 static void mwl8k_tx(struct ieee80211_hw *hw,
4543                      struct ieee80211_tx_control *control,
4544                      struct sk_buff *skb)
4545 {
4546         struct mwl8k_priv *priv = hw->priv;
4547         int index = skb_get_queue_mapping(skb);
4548
4549         if (!priv->radio_on) {
4550                 wiphy_debug(hw->wiphy,
4551                             "dropped TX frame since radio disabled\n");
4552                 dev_kfree_skb(skb);
4553                 return;
4554         }
4555
4556         mwl8k_txq_xmit(hw, index, control->sta, skb);
4557 }
4558
4559 static int mwl8k_start(struct ieee80211_hw *hw)
4560 {
4561         struct mwl8k_priv *priv = hw->priv;
4562         int rc;
4563
4564         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4565                          IRQF_SHARED, MWL8K_NAME, hw);
4566         if (rc) {
4567                 priv->irq = -1;
4568                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4569                 return -EIO;
4570         }
4571         priv->irq = priv->pdev->irq;
4572
4573         /* Enable TX reclaim and RX tasklets.  */
4574         tasklet_enable(&priv->poll_tx_task);
4575         tasklet_enable(&priv->poll_rx_task);
4576
4577         /* Enable interrupts */
4578         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4579         iowrite32(MWL8K_A2H_EVENTS,
4580                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4581
4582         rc = mwl8k_fw_lock(hw);
4583         if (!rc) {
4584                 rc = mwl8k_cmd_radio_enable(hw);
4585
4586                 if (!priv->ap_fw) {
4587                         if (!rc)
4588                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4589
4590                         if (!rc)
4591                                 rc = mwl8k_cmd_set_pre_scan(hw);
4592
4593                         if (!rc)
4594                                 rc = mwl8k_cmd_set_post_scan(hw,
4595                                                 "\x00\x00\x00\x00\x00\x00");
4596                 }
4597
4598                 if (!rc)
4599                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4600
4601                 if (!rc)
4602                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4603
4604                 mwl8k_fw_unlock(hw);
4605         }
4606
4607         if (rc) {
4608                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4609                 free_irq(priv->pdev->irq, hw);
4610                 priv->irq = -1;
4611                 tasklet_disable(&priv->poll_tx_task);
4612                 tasklet_disable(&priv->poll_rx_task);
4613         } else {
4614                 ieee80211_wake_queues(hw);
4615         }
4616
4617         return rc;
4618 }
4619
4620 static void mwl8k_stop(struct ieee80211_hw *hw)
4621 {
4622         struct mwl8k_priv *priv = hw->priv;
4623         int i;
4624
4625         if (!priv->hw_restart_in_progress)
4626                 mwl8k_cmd_radio_disable(hw);
4627
4628         ieee80211_stop_queues(hw);
4629
4630         /* Disable interrupts */
4631         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4632         if (priv->irq != -1) {
4633                 free_irq(priv->pdev->irq, hw);
4634                 priv->irq = -1;
4635         }
4636
4637         /* Stop finalize join worker */
4638         cancel_work_sync(&priv->finalize_join_worker);
4639         cancel_work_sync(&priv->watchdog_ba_handle);
4640         if (priv->beacon_skb != NULL)
4641                 dev_kfree_skb(priv->beacon_skb);
4642
4643         /* Stop TX reclaim and RX tasklets.  */
4644         tasklet_disable(&priv->poll_tx_task);
4645         tasklet_disable(&priv->poll_rx_task);
4646
4647         /* Return all skbs to mac80211 */
4648         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4649                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4650 }
4651
4652 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4653
4654 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4655                                struct ieee80211_vif *vif)
4656 {
4657         struct mwl8k_priv *priv = hw->priv;
4658         struct mwl8k_vif *mwl8k_vif;
4659         u32 macids_supported;
4660         int macid, rc;
4661         struct mwl8k_device_info *di;
4662
4663         /*
4664          * Reject interface creation if sniffer mode is active, as
4665          * STA operation is mutually exclusive with hardware sniffer
4666          * mode.  (Sniffer mode is only used on STA firmware.)
4667          */
4668         if (priv->sniffer_enabled) {
4669                 wiphy_info(hw->wiphy,
4670                            "unable to create STA interface because sniffer mode is enabled\n");
4671                 return -EINVAL;
4672         }
4673
4674         di = priv->device_info;
4675         switch (vif->type) {
4676         case NL80211_IFTYPE_AP:
4677                 if (!priv->ap_fw && di->fw_image_ap) {
4678                         /* we must load the ap fw to meet this request */
4679                         if (!list_empty(&priv->vif_list))
4680                                 return -EBUSY;
4681                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4682                         if (rc)
4683                                 return rc;
4684                 }
4685                 macids_supported = priv->ap_macids_supported;
4686                 break;
4687         case NL80211_IFTYPE_STATION:
4688                 if (priv->ap_fw && di->fw_image_sta) {
4689                         if (!list_empty(&priv->vif_list)) {
4690                                 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4691                                            "Adding STA interface for WDS");
4692                         } else {
4693                                 /* we must load the sta fw to
4694                                  * meet this request.
4695                                  */
4696                                 rc = mwl8k_reload_firmware(hw,
4697                                                            di->fw_image_sta);
4698                                 if (rc)
4699                                         return rc;
4700                         }
4701                 }
4702                 macids_supported = priv->sta_macids_supported;
4703                 break;
4704         default:
4705                 return -EINVAL;
4706         }
4707
4708         macid = ffs(macids_supported & ~priv->macids_used);
4709         if (!macid--)
4710                 return -EBUSY;
4711
4712         /* Setup driver private area. */
4713         mwl8k_vif = MWL8K_VIF(vif);
4714         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4715         mwl8k_vif->vif = vif;
4716         mwl8k_vif->macid = macid;
4717         mwl8k_vif->seqno = 0;
4718         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4719         mwl8k_vif->is_hw_crypto_enabled = false;
4720
4721         /* Set the mac address.  */
4722         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4723
4724         if (vif->type == NL80211_IFTYPE_AP)
4725                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4726
4727         priv->macids_used |= 1 << mwl8k_vif->macid;
4728         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4729
4730         return 0;
4731 }
4732
4733 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4734 {
4735         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4736         if (!priv->macids_used)
4737                 return;
4738
4739         priv->macids_used &= ~(1 << vif->macid);
4740         list_del(&vif->list);
4741 }
4742
4743 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4744                                    struct ieee80211_vif *vif)
4745 {
4746         struct mwl8k_priv *priv = hw->priv;
4747         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4748
4749         if (vif->type == NL80211_IFTYPE_AP)
4750                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4751
4752         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4753
4754         mwl8k_remove_vif(priv, mwl8k_vif);
4755 }
4756
4757 static void mwl8k_hw_restart_work(struct work_struct *work)
4758 {
4759         struct mwl8k_priv *priv =
4760                 container_of(work, struct mwl8k_priv, fw_reload);
4761         struct ieee80211_hw *hw = priv->hw;
4762         struct mwl8k_device_info *di;
4763         int rc;
4764
4765         /* If some command is waiting for a response, clear it */
4766         if (priv->hostcmd_wait != NULL) {
4767                 complete(priv->hostcmd_wait);
4768                 priv->hostcmd_wait = NULL;
4769         }
4770
4771         priv->hw_restart_owner = current;
4772         di = priv->device_info;
4773         mwl8k_fw_lock(hw);
4774
4775         if (priv->ap_fw)
4776                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4777         else
4778                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4779
4780         if (rc)
4781                 goto fail;
4782
4783         priv->hw_restart_owner = NULL;
4784         priv->hw_restart_in_progress = false;
4785
4786         /*
4787          * This unlock will wake up the queues and
4788          * also opens the command path for other
4789          * commands
4790          */
4791         mwl8k_fw_unlock(hw);
4792
4793         ieee80211_restart_hw(hw);
4794
4795         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4796
4797         return;
4798 fail:
4799         mwl8k_fw_unlock(hw);
4800
4801         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4802 }
4803
4804 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4805 {
4806         struct ieee80211_conf *conf = &hw->conf;
4807         struct mwl8k_priv *priv = hw->priv;
4808         int rc;
4809
4810         rc = mwl8k_fw_lock(hw);
4811         if (rc)
4812                 return rc;
4813
4814         if (conf->flags & IEEE80211_CONF_IDLE)
4815                 rc = mwl8k_cmd_radio_disable(hw);
4816         else
4817                 rc = mwl8k_cmd_radio_enable(hw);
4818         if (rc)
4819                 goto out;
4820
4821         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4822                 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4823                 if (rc)
4824                         goto out;
4825         }
4826
4827         if (conf->power_level > 18)
4828                 conf->power_level = 18;
4829
4830         if (priv->ap_fw) {
4831
4832                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4833                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4834                         if (rc)
4835                                 goto out;
4836                 }
4837
4838
4839         } else {
4840                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4841                 if (rc)
4842                         goto out;
4843                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4844         }
4845
4846 out:
4847         mwl8k_fw_unlock(hw);
4848
4849         return rc;
4850 }
4851
4852 static void
4853 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4854                            struct ieee80211_bss_conf *info, u32 changed)
4855 {
4856         struct mwl8k_priv *priv = hw->priv;
4857         u32 ap_legacy_rates = 0;
4858         u8 ap_mcs_rates[16];
4859         int rc;
4860
4861         if (mwl8k_fw_lock(hw))
4862                 return;
4863
4864         /*
4865          * No need to capture a beacon if we're no longer associated.
4866          */
4867         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4868                 priv->capture_beacon = false;
4869
4870         /*
4871          * Get the AP's legacy and MCS rates.
4872          */
4873         if (vif->bss_conf.assoc) {
4874                 struct ieee80211_sta *ap;
4875
4876                 rcu_read_lock();
4877
4878                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4879                 if (ap == NULL) {
4880                         rcu_read_unlock();
4881                         goto out;
4882                 }
4883
4884                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4885                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4886                 } else {
4887                         ap_legacy_rates =
4888                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4889                 }
4890                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4891
4892                 rcu_read_unlock();
4893         }
4894
4895         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
4896             !priv->ap_fw) {
4897                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4898                 if (rc)
4899                         goto out;
4900
4901                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4902                 if (rc)
4903                         goto out;
4904         } else {
4905                 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
4906                     priv->ap_fw) {
4907                         int idx;
4908                         int rate;
4909
4910                         /* Use AP firmware specific rate command.
4911                          */
4912                         idx = ffs(vif->bss_conf.basic_rates);
4913                         if (idx)
4914                                 idx--;
4915
4916                         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4917                                 rate = mwl8k_rates_24[idx].hw_value;
4918                         else
4919                                 rate = mwl8k_rates_50[idx].hw_value;
4920
4921                         mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4922                 }
4923         }
4924
4925         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4926                 rc = mwl8k_set_radio_preamble(hw,
4927                                 vif->bss_conf.use_short_preamble);
4928                 if (rc)
4929                         goto out;
4930         }
4931
4932         if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw)  {
4933                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4934                 if (rc)
4935                         goto out;
4936         }
4937
4938         if (vif->bss_conf.assoc && !priv->ap_fw &&
4939             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4940                         BSS_CHANGED_HT))) {
4941                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4942                 if (rc)
4943                         goto out;
4944         }
4945
4946         if (vif->bss_conf.assoc &&
4947             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4948                 /*
4949                  * Finalize the join.  Tell rx handler to process
4950                  * next beacon from our BSSID.
4951                  */
4952                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4953                 priv->capture_beacon = true;
4954         }
4955
4956 out:
4957         mwl8k_fw_unlock(hw);
4958 }
4959
4960 static void
4961 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4962                           struct ieee80211_bss_conf *info, u32 changed)
4963 {
4964         int rc;
4965
4966         if (mwl8k_fw_lock(hw))
4967                 return;
4968
4969         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4970                 rc = mwl8k_set_radio_preamble(hw,
4971                                 vif->bss_conf.use_short_preamble);
4972                 if (rc)
4973                         goto out;
4974         }
4975
4976         if (changed & BSS_CHANGED_BASIC_RATES) {
4977                 int idx;
4978                 int rate;
4979
4980                 /*
4981                  * Use lowest supported basic rate for multicasts
4982                  * and management frames (such as probe responses --
4983                  * beacons will always go out at 1 Mb/s).
4984                  */
4985                 idx = ffs(vif->bss_conf.basic_rates);
4986                 if (idx)
4987                         idx--;
4988
4989                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4990                         rate = mwl8k_rates_24[idx].hw_value;
4991                 else
4992                         rate = mwl8k_rates_50[idx].hw_value;
4993
4994                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4995         }
4996
4997         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4998                 struct sk_buff *skb;
4999
5000                 skb = ieee80211_beacon_get(hw, vif);
5001                 if (skb != NULL) {
5002                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5003                         kfree_skb(skb);
5004                 }
5005         }
5006
5007         if (changed & BSS_CHANGED_BEACON_ENABLED)
5008                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5009
5010 out:
5011         mwl8k_fw_unlock(hw);
5012 }
5013
5014 static void
5015 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5016                        struct ieee80211_bss_conf *info, u32 changed)
5017 {
5018         if (vif->type == NL80211_IFTYPE_STATION)
5019                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5020         if (vif->type == NL80211_IFTYPE_AP)
5021                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5022 }
5023
5024 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5025                                    struct netdev_hw_addr_list *mc_list)
5026 {
5027         struct mwl8k_cmd_pkt *cmd;
5028
5029         /*
5030          * Synthesize and return a command packet that programs the
5031          * hardware multicast address filter.  At this point we don't
5032          * know whether FIF_ALLMULTI is being requested, but if it is,
5033          * we'll end up throwing this packet away and creating a new
5034          * one in mwl8k_configure_filter().
5035          */
5036         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5037
5038         return (unsigned long)cmd;
5039 }
5040
5041 static int
5042 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5043                                unsigned int changed_flags,
5044                                unsigned int *total_flags)
5045 {
5046         struct mwl8k_priv *priv = hw->priv;
5047
5048         /*
5049          * Hardware sniffer mode is mutually exclusive with STA
5050          * operation, so refuse to enable sniffer mode if a STA
5051          * interface is active.
5052          */
5053         if (!list_empty(&priv->vif_list)) {
5054                 if (net_ratelimit())
5055                         wiphy_info(hw->wiphy,
5056                                    "not enabling sniffer mode because STA interface is active\n");
5057                 return 0;
5058         }
5059
5060         if (!priv->sniffer_enabled) {
5061                 if (mwl8k_cmd_enable_sniffer(hw, 1))
5062                         return 0;
5063                 priv->sniffer_enabled = true;
5064         }
5065
5066         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
5067                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5068                         FIF_OTHER_BSS;
5069
5070         return 1;
5071 }
5072
5073 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5074 {
5075         if (!list_empty(&priv->vif_list))
5076                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5077
5078         return NULL;
5079 }
5080
5081 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5082                                    unsigned int changed_flags,
5083                                    unsigned int *total_flags,
5084                                    u64 multicast)
5085 {
5086         struct mwl8k_priv *priv = hw->priv;
5087         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5088
5089         /*
5090          * AP firmware doesn't allow fine-grained control over
5091          * the receive filter.
5092          */
5093         if (priv->ap_fw) {
5094                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5095                 kfree(cmd);
5096                 return;
5097         }
5098
5099         /*
5100          * Enable hardware sniffer mode if FIF_CONTROL or
5101          * FIF_OTHER_BSS is requested.
5102          */
5103         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5104             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5105                 kfree(cmd);
5106                 return;
5107         }
5108
5109         /* Clear unsupported feature flags */
5110         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5111
5112         if (mwl8k_fw_lock(hw)) {
5113                 kfree(cmd);
5114                 return;
5115         }
5116
5117         if (priv->sniffer_enabled) {
5118                 mwl8k_cmd_enable_sniffer(hw, 0);
5119                 priv->sniffer_enabled = false;
5120         }
5121
5122         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5123                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5124                         /*
5125                          * Disable the BSS filter.
5126                          */
5127                         mwl8k_cmd_set_pre_scan(hw);
5128                 } else {
5129                         struct mwl8k_vif *mwl8k_vif;
5130                         const u8 *bssid;
5131
5132                         /*
5133                          * Enable the BSS filter.
5134                          *
5135                          * If there is an active STA interface, use that
5136                          * interface's BSSID, otherwise use a dummy one
5137                          * (where the OUI part needs to be nonzero for
5138                          * the BSSID to be accepted by POST_SCAN).
5139                          */
5140                         mwl8k_vif = mwl8k_first_vif(priv);
5141                         if (mwl8k_vif != NULL)
5142                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
5143                         else
5144                                 bssid = "\x01\x00\x00\x00\x00\x00";
5145
5146                         mwl8k_cmd_set_post_scan(hw, bssid);
5147                 }
5148         }
5149
5150         /*
5151          * If FIF_ALLMULTI is being requested, throw away the command
5152          * packet that ->prepare_multicast() built and replace it with
5153          * a command packet that enables reception of all multicast
5154          * packets.
5155          */
5156         if (*total_flags & FIF_ALLMULTI) {
5157                 kfree(cmd);
5158                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5159         }
5160
5161         if (cmd != NULL) {
5162                 mwl8k_post_cmd(hw, cmd);
5163                 kfree(cmd);
5164         }
5165
5166         mwl8k_fw_unlock(hw);
5167 }
5168
5169 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5170 {
5171         return mwl8k_cmd_set_rts_threshold(hw, value);
5172 }
5173
5174 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5175                             struct ieee80211_vif *vif,
5176                             struct ieee80211_sta *sta)
5177 {
5178         struct mwl8k_priv *priv = hw->priv;
5179
5180         if (priv->ap_fw)
5181                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5182         else
5183                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5184 }
5185
5186 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5187                          struct ieee80211_vif *vif,
5188                          struct ieee80211_sta *sta)
5189 {
5190         struct mwl8k_priv *priv = hw->priv;
5191         int ret;
5192         int i;
5193         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5194         struct ieee80211_key_conf *key;
5195
5196         if (!priv->ap_fw) {
5197                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5198                 if (ret >= 0) {
5199                         MWL8K_STA(sta)->peer_id = ret;
5200                         if (sta->ht_cap.ht_supported)
5201                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5202                         ret = 0;
5203                 }
5204
5205         } else {
5206                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5207         }
5208
5209         for (i = 0; i < NUM_WEP_KEYS; i++) {
5210                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5211                 if (mwl8k_vif->wep_key_conf[i].enabled)
5212                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5213         }
5214         return ret;
5215 }
5216
5217 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5218                          struct ieee80211_vif *vif, u16 queue,
5219                          const struct ieee80211_tx_queue_params *params)
5220 {
5221         struct mwl8k_priv *priv = hw->priv;
5222         int rc;
5223
5224         rc = mwl8k_fw_lock(hw);
5225         if (!rc) {
5226                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5227                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5228
5229                 if (!priv->wmm_enabled)
5230                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5231
5232                 if (!rc) {
5233                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5234                         rc = mwl8k_cmd_set_edca_params(hw, q,
5235                                                        params->cw_min,
5236                                                        params->cw_max,
5237                                                        params->aifs,
5238                                                        params->txop);
5239                 }
5240
5241                 mwl8k_fw_unlock(hw);
5242         }
5243
5244         return rc;
5245 }
5246
5247 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5248                            struct ieee80211_low_level_stats *stats)
5249 {
5250         return mwl8k_cmd_get_stat(hw, stats);
5251 }
5252
5253 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5254                                 struct survey_info *survey)
5255 {
5256         struct mwl8k_priv *priv = hw->priv;
5257         struct ieee80211_conf *conf = &hw->conf;
5258
5259         if (idx != 0)
5260                 return -ENOENT;
5261
5262         survey->channel = conf->channel;
5263         survey->filled = SURVEY_INFO_NOISE_DBM;
5264         survey->noise = priv->noise;
5265
5266         return 0;
5267 }
5268
5269 #define MAX_AMPDU_ATTEMPTS 5
5270
5271 static int
5272 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5273                    enum ieee80211_ampdu_mlme_action action,
5274                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5275                    u8 buf_size)
5276 {
5277
5278         int i, rc = 0;
5279         struct mwl8k_priv *priv = hw->priv;
5280         struct mwl8k_ampdu_stream *stream;
5281         u8 *addr = sta->addr, idx;
5282         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5283
5284         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5285                 return -ENOTSUPP;
5286
5287         spin_lock(&priv->stream_lock);
5288         stream = mwl8k_lookup_stream(hw, addr, tid);
5289
5290         switch (action) {
5291         case IEEE80211_AMPDU_RX_START:
5292         case IEEE80211_AMPDU_RX_STOP:
5293                 break;
5294         case IEEE80211_AMPDU_TX_START:
5295                 /* By the time we get here the hw queues may contain outgoing
5296                  * packets for this RA/TID that are not part of this BA
5297                  * session.  The hw will assign sequence numbers to these
5298                  * packets as they go out.  So if we query the hw for its next
5299                  * sequence number and use that for the SSN here, it may end up
5300                  * being wrong, which will lead to sequence number mismatch at
5301                  * the recipient.  To avoid this, we reset the sequence number
5302                  * to O for the first MPDU in this BA stream.
5303                  */
5304                 *ssn = 0;
5305                 if (stream == NULL) {
5306                         /* This means that somebody outside this driver called
5307                          * ieee80211_start_tx_ba_session.  This is unexpected
5308                          * because we do our own rate control.  Just warn and
5309                          * move on.
5310                          */
5311                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5312                                    "Proceeding anyway.\n", __func__);
5313                         stream = mwl8k_add_stream(hw, sta, tid);
5314                 }
5315                 if (stream == NULL) {
5316                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5317                         rc = -EBUSY;
5318                         break;
5319                 }
5320                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5321
5322                 /* Release the lock before we do the time consuming stuff */
5323                 spin_unlock(&priv->stream_lock);
5324                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5325
5326                         /* Check if link is still valid */
5327                         if (!sta_info->is_ampdu_allowed) {
5328                                 spin_lock(&priv->stream_lock);
5329                                 mwl8k_remove_stream(hw, stream);
5330                                 spin_unlock(&priv->stream_lock);
5331                                 return -EBUSY;
5332                         }
5333
5334                         rc = mwl8k_check_ba(hw, stream, vif);
5335
5336                         /* If HW restart is in progress mwl8k_post_cmd will
5337                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5338                          * such cases
5339                          */
5340                         if (!rc || rc == -EBUSY)
5341                                 break;
5342                         /*
5343                          * HW queues take time to be flushed, give them
5344                          * sufficient time
5345                          */
5346
5347                         msleep(1000);
5348                 }
5349                 spin_lock(&priv->stream_lock);
5350                 if (rc) {
5351                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5352                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5353                         mwl8k_remove_stream(hw, stream);
5354                         rc = -EBUSY;
5355                         break;
5356                 }
5357                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5358                 break;
5359         case IEEE80211_AMPDU_TX_STOP_CONT:
5360         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5361         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5362                 if (stream) {
5363                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5364                                 idx = stream->idx;
5365                                 spin_unlock(&priv->stream_lock);
5366                                 mwl8k_destroy_ba(hw, idx);
5367                                 spin_lock(&priv->stream_lock);
5368                         }
5369                         mwl8k_remove_stream(hw, stream);
5370                 }
5371                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5372                 break;
5373         case IEEE80211_AMPDU_TX_OPERATIONAL:
5374                 BUG_ON(stream == NULL);
5375                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5376                 spin_unlock(&priv->stream_lock);
5377                 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5378                 spin_lock(&priv->stream_lock);
5379                 if (!rc)
5380                         stream->state = AMPDU_STREAM_ACTIVE;
5381                 else {
5382                         idx = stream->idx;
5383                         spin_unlock(&priv->stream_lock);
5384                         mwl8k_destroy_ba(hw, idx);
5385                         spin_lock(&priv->stream_lock);
5386                         wiphy_debug(hw->wiphy,
5387                                 "Failed adding stream for sta %pM tid %d\n",
5388                                 addr, tid);
5389                         mwl8k_remove_stream(hw, stream);
5390                 }
5391                 break;
5392
5393         default:
5394                 rc = -ENOTSUPP;
5395         }
5396
5397         spin_unlock(&priv->stream_lock);
5398         return rc;
5399 }
5400
5401 static const struct ieee80211_ops mwl8k_ops = {
5402         .tx                     = mwl8k_tx,
5403         .start                  = mwl8k_start,
5404         .stop                   = mwl8k_stop,
5405         .add_interface          = mwl8k_add_interface,
5406         .remove_interface       = mwl8k_remove_interface,
5407         .config                 = mwl8k_config,
5408         .bss_info_changed       = mwl8k_bss_info_changed,
5409         .prepare_multicast      = mwl8k_prepare_multicast,
5410         .configure_filter       = mwl8k_configure_filter,
5411         .set_key                = mwl8k_set_key,
5412         .set_rts_threshold      = mwl8k_set_rts_threshold,
5413         .sta_add                = mwl8k_sta_add,
5414         .sta_remove             = mwl8k_sta_remove,
5415         .conf_tx                = mwl8k_conf_tx,
5416         .get_stats              = mwl8k_get_stats,
5417         .get_survey             = mwl8k_get_survey,
5418         .ampdu_action           = mwl8k_ampdu_action,
5419 };
5420
5421 static void mwl8k_finalize_join_worker(struct work_struct *work)
5422 {
5423         struct mwl8k_priv *priv =
5424                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5425         struct sk_buff *skb = priv->beacon_skb;
5426         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5427         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5428         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5429                                          mgmt->u.beacon.variable, len);
5430         int dtim_period = 1;
5431
5432         if (tim && tim[1] >= 2)
5433                 dtim_period = tim[3];
5434
5435         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5436
5437         dev_kfree_skb(skb);
5438         priv->beacon_skb = NULL;
5439 }
5440
5441 enum {
5442         MWL8363 = 0,
5443         MWL8687,
5444         MWL8366,
5445         MWL8764,
5446 };
5447
5448 #define MWL8K_8366_AP_FW_API 3
5449 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5450 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5451
5452 #define MWL8K_8764_AP_FW_API 1
5453 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5454 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5455
5456 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5457         [MWL8363] = {
5458                 .part_name      = "88w8363",
5459                 .helper_image   = "mwl8k/helper_8363.fw",
5460                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5461         },
5462         [MWL8687] = {
5463                 .part_name      = "88w8687",
5464                 .helper_image   = "mwl8k/helper_8687.fw",
5465                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5466         },
5467         [MWL8366] = {
5468                 .part_name      = "88w8366",
5469                 .helper_image   = "mwl8k/helper_8366.fw",
5470                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5471                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5472                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5473                 .ap_rxd_ops     = &rxd_ap_ops,
5474         },
5475         [MWL8764] = {
5476                 .part_name      = "88w8764",
5477                 .fw_image_ap    = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5478                 .fw_api_ap      = MWL8K_8764_AP_FW_API,
5479                 .ap_rxd_ops     = &rxd_ap_ops,
5480         },
5481 };
5482
5483 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5484 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5485 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5486 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5487 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5488 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5489 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5490
5491 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5492         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5493         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5494         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5495         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5496         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5497         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5498         { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5499         { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5500         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5501         { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5502         { },
5503 };
5504 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5505
5506 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5507 {
5508         int rc;
5509         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5510                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5511                priv->fw_pref, priv->fw_alt);
5512         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5513         if (rc) {
5514                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5515                        pci_name(priv->pdev), priv->fw_alt);
5516                 return rc;
5517         }
5518         return 0;
5519 }
5520
5521 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5522 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5523 {
5524         struct mwl8k_priv *priv = context;
5525         struct mwl8k_device_info *di = priv->device_info;
5526         int rc;
5527
5528         switch (priv->fw_state) {
5529         case FW_STATE_INIT:
5530                 if (!fw) {
5531                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5532                                pci_name(priv->pdev), di->helper_image);
5533                         goto fail;
5534                 }
5535                 priv->fw_helper = fw;
5536                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5537                                       true);
5538                 if (rc && priv->fw_alt) {
5539                         rc = mwl8k_request_alt_fw(priv);
5540                         if (rc)
5541                                 goto fail;
5542                         priv->fw_state = FW_STATE_LOADING_ALT;
5543                 } else if (rc)
5544                         goto fail;
5545                 else
5546                         priv->fw_state = FW_STATE_LOADING_PREF;
5547                 break;
5548
5549         case FW_STATE_LOADING_PREF:
5550                 if (!fw) {
5551                         if (priv->fw_alt) {
5552                                 rc = mwl8k_request_alt_fw(priv);
5553                                 if (rc)
5554                                         goto fail;
5555                                 priv->fw_state = FW_STATE_LOADING_ALT;
5556                         } else
5557                                 goto fail;
5558                 } else {
5559                         priv->fw_ucode = fw;
5560                         rc = mwl8k_firmware_load_success(priv);
5561                         if (rc)
5562                                 goto fail;
5563                         else
5564                                 complete(&priv->firmware_loading_complete);
5565                 }
5566                 break;
5567
5568         case FW_STATE_LOADING_ALT:
5569                 if (!fw) {
5570                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5571                                pci_name(priv->pdev), di->helper_image);
5572                         goto fail;
5573                 }
5574                 priv->fw_ucode = fw;
5575                 rc = mwl8k_firmware_load_success(priv);
5576                 if (rc)
5577                         goto fail;
5578                 else
5579                         complete(&priv->firmware_loading_complete);
5580                 break;
5581
5582         default:
5583                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5584                        MWL8K_NAME, priv->fw_state);
5585                 BUG_ON(1);
5586         }
5587
5588         return;
5589
5590 fail:
5591         priv->fw_state = FW_STATE_ERROR;
5592         complete(&priv->firmware_loading_complete);
5593         device_release_driver(&priv->pdev->dev);
5594         mwl8k_release_firmware(priv);
5595 }
5596
5597 #define MAX_RESTART_ATTEMPTS 1
5598 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5599                                bool nowait)
5600 {
5601         struct mwl8k_priv *priv = hw->priv;
5602         int rc;
5603         int count = MAX_RESTART_ATTEMPTS;
5604
5605 retry:
5606         /* Reset firmware and hardware */
5607         mwl8k_hw_reset(priv);
5608
5609         /* Ask userland hotplug daemon for the device firmware */
5610         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5611         if (rc) {
5612                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5613                 return rc;
5614         }
5615
5616         if (nowait)
5617                 return rc;
5618
5619         /* Load firmware into hardware */
5620         rc = mwl8k_load_firmware(hw);
5621         if (rc)
5622                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5623
5624         /* Reclaim memory once firmware is successfully loaded */
5625         mwl8k_release_firmware(priv);
5626
5627         if (rc && count) {
5628                 /* FW did not start successfully;
5629                  * lets try one more time
5630                  */
5631                 count--;
5632                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5633                 msleep(20);
5634                 goto retry;
5635         }
5636
5637         return rc;
5638 }
5639
5640 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5641 {
5642         struct mwl8k_priv *priv = hw->priv;
5643         int rc = 0;
5644         int i;
5645
5646         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5647                 rc = mwl8k_txq_init(hw, i);
5648                 if (rc)
5649                         break;
5650                 if (priv->ap_fw)
5651                         iowrite32(priv->txq[i].txd_dma,
5652                                   priv->sram + priv->txq_offset[i]);
5653         }
5654         return rc;
5655 }
5656
5657 /* initialize hw after successfully loading a firmware image */
5658 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5659 {
5660         struct mwl8k_priv *priv = hw->priv;
5661         int rc = 0;
5662         int i;
5663
5664         if (priv->ap_fw) {
5665                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5666                 if (priv->rxd_ops == NULL) {
5667                         wiphy_err(hw->wiphy,
5668                                   "Driver does not have AP firmware image support for this hardware\n");
5669                         rc = -ENOENT;
5670                         goto err_stop_firmware;
5671                 }
5672         } else {
5673                 priv->rxd_ops = &rxd_sta_ops;
5674         }
5675
5676         priv->sniffer_enabled = false;
5677         priv->wmm_enabled = false;
5678         priv->pending_tx_pkts = 0;
5679         atomic_set(&priv->watchdog_event_pending, 0);
5680
5681         rc = mwl8k_rxq_init(hw, 0);
5682         if (rc)
5683                 goto err_stop_firmware;
5684         rxq_refill(hw, 0, INT_MAX);
5685
5686         /* For the sta firmware, we need to know the dma addresses of tx queues
5687          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5688          * prior to issuing this command.  But for the AP case, we learn the
5689          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5690          * case we must initialize the tx queues after.
5691          */
5692         priv->num_ampdu_queues = 0;
5693         if (!priv->ap_fw) {
5694                 rc = mwl8k_init_txqs(hw);
5695                 if (rc)
5696                         goto err_free_queues;
5697         }
5698
5699         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5700         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5701         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5702                   MWL8K_A2H_INT_BA_WATCHDOG,
5703                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5704         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5705                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5706
5707         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5708                          IRQF_SHARED, MWL8K_NAME, hw);
5709         if (rc) {
5710                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5711                 goto err_free_queues;
5712         }
5713
5714         /*
5715          * When hw restart is requested,
5716          * mac80211 will take care of clearing
5717          * the ampdu streams, so do not clear
5718          * the ampdu state here
5719          */
5720         if (!priv->hw_restart_in_progress)
5721                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5722
5723         /*
5724          * Temporarily enable interrupts.  Initial firmware host
5725          * commands use interrupts and avoid polling.  Disable
5726          * interrupts when done.
5727          */
5728         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5729
5730         /* Get config data, mac addrs etc */
5731         if (priv->ap_fw) {
5732                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5733                 if (!rc)
5734                         rc = mwl8k_init_txqs(hw);
5735                 if (!rc)
5736                         rc = mwl8k_cmd_set_hw_spec(hw);
5737         } else {
5738                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5739         }
5740         if (rc) {
5741                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5742                 goto err_free_irq;
5743         }
5744
5745         /* Turn radio off */
5746         rc = mwl8k_cmd_radio_disable(hw);
5747         if (rc) {
5748                 wiphy_err(hw->wiphy, "Cannot disable\n");
5749                 goto err_free_irq;
5750         }
5751
5752         /* Clear MAC address */
5753         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5754         if (rc) {
5755                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5756                 goto err_free_irq;
5757         }
5758
5759         /* Configure Antennas */
5760         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5761         if (rc)
5762                 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5763         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5764         if (rc)
5765                 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5766
5767
5768         /* Disable interrupts */
5769         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5770         free_irq(priv->pdev->irq, hw);
5771
5772         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5773                    priv->device_info->part_name,
5774                    priv->hw_rev, hw->wiphy->perm_addr,
5775                    priv->ap_fw ? "AP" : "STA",
5776                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5777                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5778
5779         return 0;
5780
5781 err_free_irq:
5782         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5783         free_irq(priv->pdev->irq, hw);
5784
5785 err_free_queues:
5786         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5787                 mwl8k_txq_deinit(hw, i);
5788         mwl8k_rxq_deinit(hw, 0);
5789
5790 err_stop_firmware:
5791         mwl8k_hw_reset(priv);
5792
5793         return rc;
5794 }
5795
5796 /*
5797  * invoke mwl8k_reload_firmware to change the firmware image after the device
5798  * has already been registered
5799  */
5800 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5801 {
5802         int i, rc = 0;
5803         struct mwl8k_priv *priv = hw->priv;
5804         struct mwl8k_vif *vif, *tmp_vif;
5805
5806         mwl8k_stop(hw);
5807         mwl8k_rxq_deinit(hw, 0);
5808
5809         /*
5810          * All the existing interfaces are re-added by the ieee80211_reconfig;
5811          * which means driver should remove existing interfaces before calling
5812          * ieee80211_restart_hw
5813          */
5814         if (priv->hw_restart_in_progress)
5815                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5816                         mwl8k_remove_vif(priv, vif);
5817
5818         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5819                 mwl8k_txq_deinit(hw, i);
5820
5821         rc = mwl8k_init_firmware(hw, fw_image, false);
5822         if (rc)
5823                 goto fail;
5824
5825         rc = mwl8k_probe_hw(hw);
5826         if (rc)
5827                 goto fail;
5828
5829         if (priv->hw_restart_in_progress)
5830                 return rc;
5831
5832         rc = mwl8k_start(hw);
5833         if (rc)
5834                 goto fail;
5835
5836         rc = mwl8k_config(hw, ~0);
5837         if (rc)
5838                 goto fail;
5839
5840         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5841                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5842                 if (rc)
5843                         goto fail;
5844         }
5845
5846         return rc;
5847
5848 fail:
5849         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5850         return rc;
5851 }
5852
5853 static const struct ieee80211_iface_limit ap_if_limits[] = {
5854         { .max = 8,     .types = BIT(NL80211_IFTYPE_AP) },
5855         { .max = 1,     .types = BIT(NL80211_IFTYPE_STATION) },
5856 };
5857
5858 static const struct ieee80211_iface_combination ap_if_comb = {
5859         .limits = ap_if_limits,
5860         .n_limits = ARRAY_SIZE(ap_if_limits),
5861         .max_interfaces = 8,
5862         .num_different_channels = 1,
5863 };
5864
5865
5866 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5867 {
5868         struct ieee80211_hw *hw = priv->hw;
5869         int i, rc;
5870
5871         rc = mwl8k_load_firmware(hw);
5872         mwl8k_release_firmware(priv);
5873         if (rc) {
5874                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5875                 return rc;
5876         }
5877
5878         /*
5879          * Extra headroom is the size of the required DMA header
5880          * minus the size of the smallest 802.11 frame (CTS frame).
5881          */
5882         hw->extra_tx_headroom =
5883                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5884
5885         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5886
5887         hw->channel_change_time = 10;
5888
5889         hw->queues = MWL8K_TX_WMM_QUEUES;
5890
5891         /* Set rssi values to dBm */
5892         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5893
5894         /*
5895          * Ask mac80211 to not to trigger PS mode
5896          * based on PM bit of incoming frames.
5897          */
5898         if (priv->ap_fw)
5899                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5900
5901         hw->vif_data_size = sizeof(struct mwl8k_vif);
5902         hw->sta_data_size = sizeof(struct mwl8k_sta);
5903
5904         priv->macids_used = 0;
5905         INIT_LIST_HEAD(&priv->vif_list);
5906
5907         /* Set default radio state and preamble */
5908         priv->radio_on = false;
5909         priv->radio_short_preamble = false;
5910
5911         /* Finalize join worker */
5912         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5913         /* Handle watchdog ba events */
5914         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5915         /* To reload the firmware if it crashes */
5916         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5917
5918         /* TX reclaim and RX tasklets.  */
5919         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5920         tasklet_disable(&priv->poll_tx_task);
5921         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5922         tasklet_disable(&priv->poll_rx_task);
5923
5924         /* Power management cookie */
5925         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5926         if (priv->cookie == NULL)
5927                 return -ENOMEM;
5928
5929         mutex_init(&priv->fw_mutex);
5930         priv->fw_mutex_owner = NULL;
5931         priv->fw_mutex_depth = 0;
5932         priv->hostcmd_wait = NULL;
5933
5934         spin_lock_init(&priv->tx_lock);
5935
5936         spin_lock_init(&priv->stream_lock);
5937
5938         priv->tx_wait = NULL;
5939
5940         rc = mwl8k_probe_hw(hw);
5941         if (rc)
5942                 goto err_free_cookie;
5943
5944         hw->wiphy->interface_modes = 0;
5945
5946         if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5947                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5948                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5949                 hw->wiphy->iface_combinations = &ap_if_comb;
5950                 hw->wiphy->n_iface_combinations = 1;
5951         }
5952
5953         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5954                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5955
5956         rc = ieee80211_register_hw(hw);
5957         if (rc) {
5958                 wiphy_err(hw->wiphy, "Cannot register device\n");
5959                 goto err_unprobe_hw;
5960         }
5961
5962         return 0;
5963
5964 err_unprobe_hw:
5965         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5966                 mwl8k_txq_deinit(hw, i);
5967         mwl8k_rxq_deinit(hw, 0);
5968
5969 err_free_cookie:
5970         if (priv->cookie != NULL)
5971                 pci_free_consistent(priv->pdev, 4,
5972                                 priv->cookie, priv->cookie_dma);
5973
5974         return rc;
5975 }
5976 static int mwl8k_probe(struct pci_dev *pdev,
5977                                  const struct pci_device_id *id)
5978 {
5979         static int printed_version;
5980         struct ieee80211_hw *hw;
5981         struct mwl8k_priv *priv;
5982         struct mwl8k_device_info *di;
5983         int rc;
5984
5985         if (!printed_version) {
5986                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5987                 printed_version = 1;
5988         }
5989
5990
5991         rc = pci_enable_device(pdev);
5992         if (rc) {
5993                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5994                        MWL8K_NAME);
5995                 return rc;
5996         }
5997
5998         rc = pci_request_regions(pdev, MWL8K_NAME);
5999         if (rc) {
6000                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6001                        MWL8K_NAME);
6002                 goto err_disable_device;
6003         }
6004
6005         pci_set_master(pdev);
6006
6007
6008         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6009         if (hw == NULL) {
6010                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6011                 rc = -ENOMEM;
6012                 goto err_free_reg;
6013         }
6014
6015         SET_IEEE80211_DEV(hw, &pdev->dev);
6016         pci_set_drvdata(pdev, hw);
6017
6018         priv = hw->priv;
6019         priv->hw = hw;
6020         priv->pdev = pdev;
6021         priv->device_info = &mwl8k_info_tbl[id->driver_data];
6022
6023         if (id->driver_data == MWL8764)
6024                 priv->is_8764 = true;
6025
6026         priv->sram = pci_iomap(pdev, 0, 0x10000);
6027         if (priv->sram == NULL) {
6028                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6029                 rc = -EIO;
6030                 goto err_iounmap;
6031         }
6032
6033         /*
6034          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6035          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6036          */
6037         priv->regs = pci_iomap(pdev, 1, 0x10000);
6038         if (priv->regs == NULL) {
6039                 priv->regs = pci_iomap(pdev, 2, 0x10000);
6040                 if (priv->regs == NULL) {
6041                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
6042                         rc = -EIO;
6043                         goto err_iounmap;
6044                 }
6045         }
6046
6047         /*
6048          * Choose the initial fw image depending on user input.  If a second
6049          * image is available, make it the alternative image that will be
6050          * loaded if the first one fails.
6051          */
6052         init_completion(&priv->firmware_loading_complete);
6053         di = priv->device_info;
6054         if (ap_mode_default && di->fw_image_ap) {
6055                 priv->fw_pref = di->fw_image_ap;
6056                 priv->fw_alt = di->fw_image_sta;
6057         } else if (!ap_mode_default && di->fw_image_sta) {
6058                 priv->fw_pref = di->fw_image_sta;
6059                 priv->fw_alt = di->fw_image_ap;
6060         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6061                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
6062                 priv->fw_pref = di->fw_image_sta;
6063         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6064                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
6065                 priv->fw_pref = di->fw_image_ap;
6066         }
6067         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6068         if (rc)
6069                 goto err_stop_firmware;
6070
6071         priv->hw_restart_in_progress = false;
6072
6073         priv->running_bsses = 0;
6074
6075         return rc;
6076
6077 err_stop_firmware:
6078         mwl8k_hw_reset(priv);
6079
6080 err_iounmap:
6081         if (priv->regs != NULL)
6082                 pci_iounmap(pdev, priv->regs);
6083
6084         if (priv->sram != NULL)
6085                 pci_iounmap(pdev, priv->sram);
6086
6087         pci_set_drvdata(pdev, NULL);
6088         ieee80211_free_hw(hw);
6089
6090 err_free_reg:
6091         pci_release_regions(pdev);
6092
6093 err_disable_device:
6094         pci_disable_device(pdev);
6095
6096         return rc;
6097 }
6098
6099 static void mwl8k_remove(struct pci_dev *pdev)
6100 {
6101         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6102         struct mwl8k_priv *priv;
6103         int i;
6104
6105         if (hw == NULL)
6106                 return;
6107         priv = hw->priv;
6108
6109         wait_for_completion(&priv->firmware_loading_complete);
6110
6111         if (priv->fw_state == FW_STATE_ERROR) {
6112                 mwl8k_hw_reset(priv);
6113                 goto unmap;
6114         }
6115
6116         ieee80211_stop_queues(hw);
6117
6118         ieee80211_unregister_hw(hw);
6119
6120         /* Remove TX reclaim and RX tasklets.  */
6121         tasklet_kill(&priv->poll_tx_task);
6122         tasklet_kill(&priv->poll_rx_task);
6123
6124         /* Stop hardware */
6125         mwl8k_hw_reset(priv);
6126
6127         /* Return all skbs to mac80211 */
6128         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6129                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6130
6131         for (i = 0; i < mwl8k_tx_queues(priv); i++)
6132                 mwl8k_txq_deinit(hw, i);
6133
6134         mwl8k_rxq_deinit(hw, 0);
6135
6136         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6137
6138 unmap:
6139         pci_iounmap(pdev, priv->regs);
6140         pci_iounmap(pdev, priv->sram);
6141         pci_set_drvdata(pdev, NULL);
6142         ieee80211_free_hw(hw);
6143         pci_release_regions(pdev);
6144         pci_disable_device(pdev);
6145 }
6146
6147 static struct pci_driver mwl8k_driver = {
6148         .name           = MWL8K_NAME,
6149         .id_table       = mwl8k_pci_id_table,
6150         .probe          = mwl8k_probe,
6151         .remove         = mwl8k_remove,
6152 };
6153
6154 module_pci_driver(mwl8k_driver);
6155
6156 MODULE_DESCRIPTION(MWL8K_DESC);
6157 MODULE_VERSION(MWL8K_VERSION);
6158 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6159 MODULE_LICENSE("GPL");