drivers/net/wireless/mwl8k.c

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