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/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/sched.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/list.h>
  18 #include <linux/pci.h>
  19 #include <linux/delay.h>
  20 #include <linux/completion.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/slab.h>
  23 #include <net/mac80211.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/firmware.h>
  26 #include <linux/workqueue.h>
  27
  28 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  29 #define MWL8K_NAME      KBUILD_MODNAME
  30 #define MWL8K_VERSION   "0.12"
  31
  32 /* Module parameters */
  33 static unsigned ap_mode_default;
  34 module_param(ap_mode_default, bool, 0);
  35 MODULE_PARM_DESC(ap_mode_default,
  36                  "Set to 1 to make ap mode the default instead of sta mode");
  37
  38 /* Register definitions */
  39 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  40 #define  MWL8K_MODE_STA                          0x0000005a
  41 #define  MWL8K_MODE_AP                           0x000000a5
  42 #define MWL8K_HIU_INT_CODE                      0x00000c14
  43 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  44 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  45 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  46 #define MWL8K_HIU_SCRATCH                       0x00000c40
  47
  48 /* Host->device communications */
  49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  51 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  54 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  55 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  56 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  57 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  58
  59 /* Device->host communications */
  60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  62 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  65 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  66 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  67 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  68 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  69 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  70 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  71 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  72 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  73 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  74 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  75 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  76
  77 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  78                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  79                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  80                                  MWL8K_A2H_INT_RADAR_DETECT | \
  81                                  MWL8K_A2H_INT_RADIO_ON | \
  82                                  MWL8K_A2H_INT_RADIO_OFF | \
  83                                  MWL8K_A2H_INT_MAC_EVENT | \
  84                                  MWL8K_A2H_INT_OPC_DONE | \
  85                                  MWL8K_A2H_INT_RX_READY | \
  86                                  MWL8K_A2H_INT_TX_DONE | \
  87                                  MWL8K_A2H_INT_BA_WATCHDOG)
  88
  89 #define MWL8K_RX_QUEUES         1
  90 #define MWL8K_TX_WMM_QUEUES     4
  91 #define MWL8K_MAX_AMPDU_QUEUES  8
  92 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
  93 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
  94
  95 struct rxd_ops {
  96         int rxd_size;
  97         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
  98         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
  99         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 100                            __le16 *qos, s8 *noise);
 101 };
 102
 103 struct mwl8k_device_info {
 104         char *part_name;
 105         char *helper_image;
 106         char *fw_image_sta;
 107         char *fw_image_ap;
 108         struct rxd_ops *ap_rxd_ops;
 109         u32 fw_api_ap;
 110 };
 111
 112 struct mwl8k_rx_queue {
 113         int rxd_count;
 114
 115         /* hw receives here */
 116         int head;
 117
 118         /* refill descs here */
 119         int tail;
 120
 121         void *rxd;
 122         dma_addr_t rxd_dma;
 123         struct {
 124                 struct sk_buff *skb;
 125                 DEFINE_DMA_UNMAP_ADDR(dma);
 126         } *buf;
 127 };
 128
 129 struct mwl8k_tx_queue {
 130         /* hw transmits here */
 131         int head;
 132
 133         /* sw appends here */
 134         int tail;
 135
 136         unsigned int len;
 137         struct mwl8k_tx_desc *txd;
 138         dma_addr_t txd_dma;
 139         struct sk_buff **skb;
 140 };
 141
 142 enum {
 143         AMPDU_NO_STREAM,
 144         AMPDU_STREAM_NEW,
 145         AMPDU_STREAM_IN_PROGRESS,
 146         AMPDU_STREAM_ACTIVE,
 147 };
 148
 149 struct mwl8k_ampdu_stream {
 150         struct ieee80211_sta *sta;
 151         u8 tid;
 152         u8 state;
 153         u8 idx;
 154         u8 txq_idx; /* index of this stream in priv->txq */
 155 };
 156
 157 struct mwl8k_priv {
 158         struct ieee80211_hw *hw;
 159         struct pci_dev *pdev;
 160
 161         struct mwl8k_device_info *device_info;
 162
 163         void __iomem *sram;
 164         void __iomem *regs;
 165
 166         /* firmware */
 167         const struct firmware *fw_helper;
 168         const struct firmware *fw_ucode;
 169
 170         /* hardware/firmware parameters */
 171         bool ap_fw;
 172         struct rxd_ops *rxd_ops;
 173         struct ieee80211_supported_band band_24;
 174         struct ieee80211_channel channels_24[14];
 175         struct ieee80211_rate rates_24[14];
 176         struct ieee80211_supported_band band_50;
 177         struct ieee80211_channel channels_50[4];
 178         struct ieee80211_rate rates_50[9];
 179         u32 ap_macids_supported;
 180         u32 sta_macids_supported;
 181
 182         /* Ampdu stream information */
 183         u8 num_ampdu_queues;
 184         spinlock_t stream_lock;
 185         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 186         struct work_struct watchdog_ba_handle;
 187
 188         /* firmware access */
 189         struct mutex fw_mutex;
 190         struct task_struct *fw_mutex_owner;
 191         int fw_mutex_depth;
 192         struct completion *hostcmd_wait;
 193
 194         /* lock held over TX and TX reap */
 195         spinlock_t tx_lock;
 196
 197         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 198         struct completion *tx_wait;
 199
 200         /* List of interfaces.  */
 201         u32 macids_used;
 202         struct list_head vif_list;
 203
 204         /* power management status cookie from firmware */
 205         u32 *cookie;
 206         dma_addr_t cookie_dma;
 207
 208         u16 num_mcaddrs;
 209         u8 hw_rev;
 210         u32 fw_rev;
 211
 212         /*
 213          * Running count of TX packets in flight, to avoid
 214          * iterating over the transmit rings each time.
 215          */
 216         int pending_tx_pkts;
 217
 218         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 219         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 220         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 221
 222         bool radio_on;
 223         bool radio_short_preamble;
 224         bool sniffer_enabled;
 225         bool wmm_enabled;
 226
 227         /* XXX need to convert this to handle multiple interfaces */
 228         bool capture_beacon;
 229         u8 capture_bssid[ETH_ALEN];
 230         struct sk_buff *beacon_skb;
 231
 232         /*
 233          * This FJ worker has to be global as it is scheduled from the
 234          * RX handler.  At this point we don't know which interface it
 235          * belongs to until the list of bssids waiting to complete join
 236          * is checked.
 237          */
 238         struct work_struct finalize_join_worker;
 239
 240         /* Tasklet to perform TX reclaim.  */
 241         struct tasklet_struct poll_tx_task;
 242
 243         /* Tasklet to perform RX.  */
 244         struct tasklet_struct poll_rx_task;
 245
 246         /* Most recently reported noise in dBm */
 247         s8 noise;
 248
 249         /*
 250          * preserve the queue configurations so they can be restored if/when
 251          * the firmware image is swapped.
 252          */
 253         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 254
 255         /* async firmware loading state */
 256         unsigned fw_state;
 257         char *fw_pref;
 258         char *fw_alt;
 259         struct completion firmware_loading_complete;
 260 };
 261
 262 #define MAX_WEP_KEY_LEN         13
 263 #define NUM_WEP_KEYS            4
 264
 265 /* Per interface specific private data */
 266 struct mwl8k_vif {
 267         struct list_head list;
 268         struct ieee80211_vif *vif;
 269
 270         /* Firmware macid for this vif.  */
 271         int macid;
 272
 273         /* Non AMPDU sequence number assigned by driver.  */
 274         u16 seqno;
 275
 276         /* Saved WEP keys */
 277         struct {
 278                 u8 enabled;
 279                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 280         } wep_key_conf[NUM_WEP_KEYS];
 281
 282         /* BSSID */
 283         u8 bssid[ETH_ALEN];
 284
 285         /* A flag to indicate is HW crypto is enabled for this bssid */
 286         bool is_hw_crypto_enabled;
 287 };
 288 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 289 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 290
 291 struct mwl8k_sta {
 292         /* Index into station database. Returned by UPDATE_STADB.  */
 293         u8 peer_id;
 294         u8 is_ampdu_allowed;
 295 };
 296 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 297
 298 static const struct ieee80211_channel mwl8k_channels_24[] = {
 299         { .center_freq = 2412, .hw_value = 1, },
 300         { .center_freq = 2417, .hw_value = 2, },
 301         { .center_freq = 2422, .hw_value = 3, },
 302         { .center_freq = 2427, .hw_value = 4, },
 303         { .center_freq = 2432, .hw_value = 5, },
 304         { .center_freq = 2437, .hw_value = 6, },
 305         { .center_freq = 2442, .hw_value = 7, },
 306         { .center_freq = 2447, .hw_value = 8, },
 307         { .center_freq = 2452, .hw_value = 9, },
 308         { .center_freq = 2457, .hw_value = 10, },
 309         { .center_freq = 2462, .hw_value = 11, },
 310         { .center_freq = 2467, .hw_value = 12, },
 311         { .center_freq = 2472, .hw_value = 13, },
 312         { .center_freq = 2484, .hw_value = 14, },
 313 };
 314
 315 static const struct ieee80211_rate mwl8k_rates_24[] = {
 316         { .bitrate = 10, .hw_value = 2, },
 317         { .bitrate = 20, .hw_value = 4, },
 318         { .bitrate = 55, .hw_value = 11, },
 319         { .bitrate = 110, .hw_value = 22, },
 320         { .bitrate = 220, .hw_value = 44, },
 321         { .bitrate = 60, .hw_value = 12, },
 322         { .bitrate = 90, .hw_value = 18, },
 323         { .bitrate = 120, .hw_value = 24, },
 324         { .bitrate = 180, .hw_value = 36, },
 325         { .bitrate = 240, .hw_value = 48, },
 326         { .bitrate = 360, .hw_value = 72, },
 327         { .bitrate = 480, .hw_value = 96, },
 328         { .bitrate = 540, .hw_value = 108, },
 329         { .bitrate = 720, .hw_value = 144, },
 330 };
 331
 332 static const struct ieee80211_channel mwl8k_channels_50[] = {
 333         { .center_freq = 5180, .hw_value = 36, },
 334         { .center_freq = 5200, .hw_value = 40, },
 335         { .center_freq = 5220, .hw_value = 44, },
 336         { .center_freq = 5240, .hw_value = 48, },
 337 };
 338
 339 static const struct ieee80211_rate mwl8k_rates_50[] = {
 340         { .bitrate = 60, .hw_value = 12, },
 341         { .bitrate = 90, .hw_value = 18, },
 342         { .bitrate = 120, .hw_value = 24, },
 343         { .bitrate = 180, .hw_value = 36, },
 344         { .bitrate = 240, .hw_value = 48, },
 345         { .bitrate = 360, .hw_value = 72, },
 346         { .bitrate = 480, .hw_value = 96, },
 347         { .bitrate = 540, .hw_value = 108, },
 348         { .bitrate = 720, .hw_value = 144, },
 349 };
 350
 351 /* Set or get info from Firmware */
 352 #define MWL8K_CMD_GET                   0x0000
 353 #define MWL8K_CMD_SET                   0x0001
 354 #define MWL8K_CMD_SET_LIST              0x0002
 355
 356 /* Firmware command codes */
 357 #define MWL8K_CMD_CODE_DNLD             0x0001
 358 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 359 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 360 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 361 #define MWL8K_CMD_GET_STAT              0x0014
 362 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 363 #define MWL8K_CMD_RF_TX_POWER           0x001e
 364 #define MWL8K_CMD_TX_POWER              0x001f
 365 #define MWL8K_CMD_RF_ANTENNA            0x0020
 366 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 367 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 368 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 369 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 370 #define MWL8K_CMD_SET_AID               0x010d
 371 #define MWL8K_CMD_SET_RATE              0x0110
 372 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 373 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 374 #define MWL8K_CMD_SET_SLOT              0x0114
 375 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 376 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 377 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 378 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 379 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 380 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 381 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 382 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 383 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 384 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 385 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 386 #define MWL8K_CMD_UPDATE_STADB          0x1123
 387 #define MWL8K_CMD_BASTREAM              0x1125
 388
 389 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 390 {
 391         u16 command = le16_to_cpu(cmd);
 392
 393 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 394                                         snprintf(buf, bufsize, "%s", #x);\
 395                                         return buf;\
 396                                         } while (0)
 397         switch (command & ~0x8000) {
 398                 MWL8K_CMDNAME(CODE_DNLD);
 399                 MWL8K_CMDNAME(GET_HW_SPEC);
 400                 MWL8K_CMDNAME(SET_HW_SPEC);
 401                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 402                 MWL8K_CMDNAME(GET_STAT);
 403                 MWL8K_CMDNAME(RADIO_CONTROL);
 404                 MWL8K_CMDNAME(RF_TX_POWER);
 405                 MWL8K_CMDNAME(TX_POWER);
 406                 MWL8K_CMDNAME(RF_ANTENNA);
 407                 MWL8K_CMDNAME(SET_BEACON);
 408                 MWL8K_CMDNAME(SET_PRE_SCAN);
 409                 MWL8K_CMDNAME(SET_POST_SCAN);
 410                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 411                 MWL8K_CMDNAME(SET_AID);
 412                 MWL8K_CMDNAME(SET_RATE);
 413                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 414                 MWL8K_CMDNAME(RTS_THRESHOLD);
 415                 MWL8K_CMDNAME(SET_SLOT);
 416                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 417                 MWL8K_CMDNAME(SET_WMM_MODE);
 418                 MWL8K_CMDNAME(MIMO_CONFIG);
 419                 MWL8K_CMDNAME(USE_FIXED_RATE);
 420                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 421                 MWL8K_CMDNAME(SET_MAC_ADDR);
 422                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 423                 MWL8K_CMDNAME(BSS_START);
 424                 MWL8K_CMDNAME(SET_NEW_STN);
 425                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 426                 MWL8K_CMDNAME(UPDATE_STADB);
 427                 MWL8K_CMDNAME(BASTREAM);
 428                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 429         default:
 430                 snprintf(buf, bufsize, "0x%x", cmd);
 431         }
 432 #undef MWL8K_CMDNAME
 433
 434         return buf;
 435 }
 436
 437 /* Hardware and firmware reset */
 438 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 439 {
 440         iowrite32(MWL8K_H2A_INT_RESET,
 441                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 442         iowrite32(MWL8K_H2A_INT_RESET,
 443                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 444         msleep(20);
 445 }
 446
 447 /* Release fw image */
 448 static void mwl8k_release_fw(const struct firmware **fw)
 449 {
 450         if (*fw == NULL)
 451                 return;
 452         release_firmware(*fw);
 453         *fw = NULL;
 454 }
 455
 456 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 457 {
 458         mwl8k_release_fw(&priv->fw_ucode);
 459         mwl8k_release_fw(&priv->fw_helper);
 460 }
 461
 462 /* states for asynchronous f/w loading */
 463 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 464 enum {
 465         FW_STATE_INIT = 0,
 466         FW_STATE_LOADING_PREF,
 467         FW_STATE_LOADING_ALT,
 468         FW_STATE_ERROR,
 469 };
 470
 471 /* Request fw image */
 472 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 473                             const char *fname, const struct firmware **fw,
 474                             bool nowait)
 475 {
 476         /* release current image */
 477         if (*fw != NULL)
 478                 mwl8k_release_fw(fw);
 479
 480         if (nowait)
 481                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 482                                                &priv->pdev->dev, GFP_KERNEL,
 483                                                priv, mwl8k_fw_state_machine);
 484         else
 485                 return request_firmware(fw, fname, &priv->pdev->dev);
 486 }
 487
 488 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 489                                   bool nowait)
 490 {
 491         struct mwl8k_device_info *di = priv->device_info;
 492         int rc;
 493
 494         if (di->helper_image != NULL) {
 495                 if (nowait)
 496                         rc = mwl8k_request_fw(priv, di->helper_image,
 497                                               &priv->fw_helper, true);
 498                 else
 499                         rc = mwl8k_request_fw(priv, di->helper_image,
 500                                               &priv->fw_helper, false);
 501                 if (rc)
 502                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 503                                pci_name(priv->pdev), di->helper_image);
 504
 505                 if (rc || nowait)
 506                         return rc;
 507         }
 508
 509         if (nowait) {
 510                 /*
 511                  * if we get here, no helper image is needed.  Skip the
 512                  * FW_STATE_INIT state.
 513                  */
 514                 priv->fw_state = FW_STATE_LOADING_PREF;
 515                 rc = mwl8k_request_fw(priv, fw_image,
 516                                       &priv->fw_ucode,
 517                                       true);
 518         } else
 519                 rc = mwl8k_request_fw(priv, fw_image,
 520                                       &priv->fw_ucode, false);
 521         if (rc) {
 522                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 523                        pci_name(priv->pdev), fw_image);
 524                 mwl8k_release_fw(&priv->fw_helper);
 525                 return rc;
 526         }
 527
 528         return 0;
 529 }
 530
 531 struct mwl8k_cmd_pkt {
 532         __le16  code;
 533         __le16  length;
 534         __u8    seq_num;
 535         __u8    macid;
 536         __le16  result;
 537         char    payload[0];
 538 } __packed;
 539
 540 /*
 541  * Firmware loading.
 542  */
 543 static int
 544 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 545 {
 546         void __iomem *regs = priv->regs;
 547         dma_addr_t dma_addr;
 548         int loops;
 549
 550         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 551         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 552                 return -ENOMEM;
 553
 554         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 555         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 556         iowrite32(MWL8K_H2A_INT_DOORBELL,
 557                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 558         iowrite32(MWL8K_H2A_INT_DUMMY,
 559                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 560
 561         loops = 1000;
 562         do {
 563                 u32 int_code;
 564
 565                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 566                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 567                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 568                         break;
 569                 }
 570
 571                 cond_resched();
 572                 udelay(1);
 573         } while (--loops);
 574
 575         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 576
 577         return loops ? 0 : -ETIMEDOUT;
 578 }
 579
 580 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 581                                 const u8 *data, size_t length)
 582 {
 583         struct mwl8k_cmd_pkt *cmd;
 584         int done;
 585         int rc = 0;
 586
 587         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 588         if (cmd == NULL)
 589                 return -ENOMEM;
 590
 591         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 592         cmd->seq_num = 0;
 593         cmd->macid = 0;
 594         cmd->result = 0;
 595
 596         done = 0;
 597         while (length) {
 598                 int block_size = length > 256 ? 256 : length;
 599
 600                 memcpy(cmd->payload, data + done, block_size);
 601                 cmd->length = cpu_to_le16(block_size);
 602
 603                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 604                                                 sizeof(*cmd) + block_size);
 605                 if (rc)
 606                         break;
 607
 608                 done += block_size;
 609                 length -= block_size;
 610         }
 611
 612         if (!rc) {
 613                 cmd->length = 0;
 614                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 615         }
 616
 617         kfree(cmd);
 618
 619         return rc;
 620 }
 621
 622 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 623                                 const u8 *data, size_t length)
 624 {
 625         unsigned char *buffer;
 626         int may_continue, rc = 0;
 627         u32 done, prev_block_size;
 628
 629         buffer = kmalloc(1024, GFP_KERNEL);
 630         if (buffer == NULL)
 631                 return -ENOMEM;
 632
 633         done = 0;
 634         prev_block_size = 0;
 635         may_continue = 1000;
 636         while (may_continue > 0) {
 637                 u32 block_size;
 638
 639                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 640                 if (block_size & 1) {
 641                         block_size &= ~1;
 642                         may_continue--;
 643                 } else {
 644                         done += prev_block_size;
 645                         length -= prev_block_size;
 646                 }
 647
 648                 if (block_size > 1024 || block_size > length) {
 649                         rc = -EOVERFLOW;
 650                         break;
 651                 }
 652
 653                 if (length == 0) {
 654                         rc = 0;
 655                         break;
 656                 }
 657
 658                 if (block_size == 0) {
 659                         rc = -EPROTO;
 660                         may_continue--;
 661                         udelay(1);
 662                         continue;
 663                 }
 664
 665                 prev_block_size = block_size;
 666                 memcpy(buffer, data + done, block_size);
 667
 668                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 669                 if (rc)
 670                         break;
 671         }
 672
 673         if (!rc && length != 0)
 674                 rc = -EREMOTEIO;
 675
 676         kfree(buffer);
 677
 678         return rc;
 679 }
 680
 681 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 682 {
 683         struct mwl8k_priv *priv = hw->priv;
 684         const struct firmware *fw = priv->fw_ucode;
 685         int rc;
 686         int loops;
 687
 688         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 689                 const struct firmware *helper = priv->fw_helper;
 690
 691                 if (helper == NULL) {
 692                         printk(KERN_ERR "%s: helper image needed but none "
 693                                "given\n", pci_name(priv->pdev));
 694                         return -EINVAL;
 695                 }
 696
 697                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 698                 if (rc) {
 699                         printk(KERN_ERR "%s: unable to load firmware "
 700                                "helper image\n", pci_name(priv->pdev));
 701                         return rc;
 702                 }
 703                 msleep(5);
 704
 705                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 706         } else {
 707                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 708         }
 709
 710         if (rc) {
 711                 printk(KERN_ERR "%s: unable to load firmware image\n",
 712                        pci_name(priv->pdev));
 713                 return rc;
 714         }
 715
 716         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 717
 718         loops = 500000;
 719         do {
 720                 u32 ready_code;
 721
 722                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 723                 if (ready_code == MWL8K_FWAP_READY) {
 724                         priv->ap_fw = 1;
 725                         break;
 726                 } else if (ready_code == MWL8K_FWSTA_READY) {
 727                         priv->ap_fw = 0;
 728                         break;
 729                 }
 730
 731                 cond_resched();
 732                 udelay(1);
 733         } while (--loops);
 734
 735         return loops ? 0 : -ETIMEDOUT;
 736 }
 737
 738
 739 /* DMA header used by firmware and hardware.  */
 740 struct mwl8k_dma_data {
 741         __le16 fwlen;
 742         struct ieee80211_hdr wh;
 743         char data[0];
 744 } __packed;
 745
 746 /* Routines to add/remove DMA header from skb.  */
 747 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 748 {
 749         struct mwl8k_dma_data *tr;
 750         int hdrlen;
 751
 752         tr = (struct mwl8k_dma_data *)skb->data;
 753         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 754
 755         if (hdrlen != sizeof(tr->wh)) {
 756                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 757                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 758                         *((__le16 *)(tr->data - 2)) = qos;
 759                 } else {
 760                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 761                 }
 762         }
 763
 764         if (hdrlen != sizeof(*tr))
 765                 skb_pull(skb, sizeof(*tr) - hdrlen);
 766 }
 767
 768 static void
 769 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
 770 {
 771         struct ieee80211_hdr *wh;
 772         int hdrlen;
 773         int reqd_hdrlen;
 774         struct mwl8k_dma_data *tr;
 775
 776         /*
 777          * Add a firmware DMA header; the firmware requires that we
 778          * present a 2-byte payload length followed by a 4-address
 779          * header (without QoS field), followed (optionally) by any
 780          * WEP/ExtIV header (but only filled in for CCMP).
 781          */
 782         wh = (struct ieee80211_hdr *)skb->data;
 783
 784         hdrlen = ieee80211_hdrlen(wh->frame_control);
 785         reqd_hdrlen = sizeof(*tr);
 786
 787         if (hdrlen != reqd_hdrlen)
 788                 skb_push(skb, reqd_hdrlen - hdrlen);
 789
 790         if (ieee80211_is_data_qos(wh->frame_control))
 791                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 792
 793         tr = (struct mwl8k_dma_data *)skb->data;
 794         if (wh != &tr->wh)
 795                 memmove(&tr->wh, wh, hdrlen);
 796         if (hdrlen != sizeof(tr->wh))
 797                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 798
 799         /*
 800          * Firmware length is the length of the fully formed "802.11
 801          * payload".  That is, everything except for the 802.11 header.
 802          * This includes all crypto material including the MIC.
 803          */
 804         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 805 }
 806
 807 static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
 808 {
 809         struct ieee80211_hdr *wh;
 810         struct ieee80211_tx_info *tx_info;
 811         struct ieee80211_key_conf *key_conf;
 812         int data_pad;
 813
 814         wh = (struct ieee80211_hdr *)skb->data;
 815
 816         tx_info = IEEE80211_SKB_CB(skb);
 817
 818         key_conf = NULL;
 819         if (ieee80211_is_data(wh->frame_control))
 820                 key_conf = tx_info->control.hw_key;
 821
 822         /*
 823          * Make sure the packet header is in the DMA header format (4-address
 824          * without QoS), the necessary crypto padding between the header and the
 825          * payload has already been provided by mac80211, but it doesn't add tail
 826          * padding when HW crypto is enabled.
 827          *
 828          * We have the following trailer padding requirements:
 829          * - WEP: 4 trailer bytes (ICV)
 830          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 831          * - CCMP: 8 trailer bytes (MIC)
 832          */
 833         data_pad = 0;
 834         if (key_conf != NULL) {
 835                 switch (key_conf->cipher) {
 836                 case WLAN_CIPHER_SUITE_WEP40:
 837                 case WLAN_CIPHER_SUITE_WEP104:
 838                         data_pad = 4;
 839                         break;
 840                 case WLAN_CIPHER_SUITE_TKIP:
 841                         data_pad = 12;
 842                         break;
 843                 case WLAN_CIPHER_SUITE_CCMP:
 844                         data_pad = 8;
 845                         break;
 846                 }
 847         }
 848         mwl8k_add_dma_header(skb, data_pad);
 849 }
 850
 851 /*
 852  * Packet reception for 88w8366 AP firmware.
 853  */
 854 struct mwl8k_rxd_8366_ap {
 855         __le16 pkt_len;
 856         __u8 sq2;
 857         __u8 rate;
 858         __le32 pkt_phys_addr;
 859         __le32 next_rxd_phys_addr;
 860         __le16 qos_control;
 861         __le16 htsig2;
 862         __le32 hw_rssi_info;
 863         __le32 hw_noise_floor_info;
 864         __u8 noise_floor;
 865         __u8 pad0[3];
 866         __u8 rssi;
 867         __u8 rx_status;
 868         __u8 channel;
 869         __u8 rx_ctrl;
 870 } __packed;
 871
 872 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 873 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 874 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 875
 876 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 877
 878 /* 8366 AP rx_status bits */
 879 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 880 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 881 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 882 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 883 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 884
 885 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 886 {
 887         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 888
 889         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 890         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 891 }
 892
 893 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 894 {
 895         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 896
 897         rxd->pkt_len = cpu_to_le16(len);
 898         rxd->pkt_phys_addr = cpu_to_le32(addr);
 899         wmb();
 900         rxd->rx_ctrl = 0;
 901 }
 902
 903 static int
 904 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 905                           __le16 *qos, s8 *noise)
 906 {
 907         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 908
 909         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 910                 return -1;
 911         rmb();
 912
 913         memset(status, 0, sizeof(*status));
 914
 915         status->signal = -rxd->rssi;
 916         *noise = -rxd->noise_floor;
 917
 918         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 919                 status->flag |= RX_FLAG_HT;
 920                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 921                         status->flag |= RX_FLAG_40MHZ;
 922                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 923         } else {
 924                 int i;
 925
 926                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 927                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 928                                 status->rate_idx = i;
 929                                 break;
 930                         }
 931                 }
 932         }
 933
 934         if (rxd->channel > 14) {
 935                 status->band = IEEE80211_BAND_5GHZ;
 936                 if (!(status->flag & RX_FLAG_HT))
 937                         status->rate_idx -= 5;
 938         } else {
 939                 status->band = IEEE80211_BAND_2GHZ;
 940         }
 941         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 942                                                       status->band);
 943
 944         *qos = rxd->qos_control;
 945
 946         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 947             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 948             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 949                 status->flag |= RX_FLAG_MMIC_ERROR;
 950
 951         return le16_to_cpu(rxd->pkt_len);
 952 }
 953
 954 static struct rxd_ops rxd_8366_ap_ops = {
 955         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 956         .rxd_init       = mwl8k_rxd_8366_ap_init,
 957         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 958         .rxd_process    = mwl8k_rxd_8366_ap_process,
 959 };
 960
 961 /*
 962  * Packet reception for STA firmware.
 963  */
 964 struct mwl8k_rxd_sta {
 965         __le16 pkt_len;
 966         __u8 link_quality;
 967         __u8 noise_level;
 968         __le32 pkt_phys_addr;
 969         __le32 next_rxd_phys_addr;
 970         __le16 qos_control;
 971         __le16 rate_info;
 972         __le32 pad0[4];
 973         __u8 rssi;
 974         __u8 channel;
 975         __le16 pad1;
 976         __u8 rx_ctrl;
 977         __u8 rx_status;
 978         __u8 pad2[2];
 979 } __packed;
 980
 981 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 982 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 983 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 984 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 985 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 986 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 987
 988 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 989 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
 990 /* ICV=0 or MIC=1 */
 991 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
 992 /* Key is uploaded only in failure case */
 993 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
 994
 995 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 996 {
 997         struct mwl8k_rxd_sta *rxd = _rxd;
 998
 999         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1000         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1001 }
1002
1003 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1004 {
1005         struct mwl8k_rxd_sta *rxd = _rxd;
1006
1007         rxd->pkt_len = cpu_to_le16(len);
1008         rxd->pkt_phys_addr = cpu_to_le32(addr);
1009         wmb();
1010         rxd->rx_ctrl = 0;
1011 }
1012
1013 static int
1014 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1015                        __le16 *qos, s8 *noise)
1016 {
1017         struct mwl8k_rxd_sta *rxd = _rxd;
1018         u16 rate_info;
1019
1020         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1021                 return -1;
1022         rmb();
1023
1024         rate_info = le16_to_cpu(rxd->rate_info);
1025
1026         memset(status, 0, sizeof(*status));
1027
1028         status->signal = -rxd->rssi;
1029         *noise = -rxd->noise_level;
1030         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1031         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1032
1033         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1034                 status->flag |= RX_FLAG_SHORTPRE;
1035         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1036                 status->flag |= RX_FLAG_40MHZ;
1037         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1038                 status->flag |= RX_FLAG_SHORT_GI;
1039         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1040                 status->flag |= RX_FLAG_HT;
1041
1042         if (rxd->channel > 14) {
1043                 status->band = IEEE80211_BAND_5GHZ;
1044                 if (!(status->flag & RX_FLAG_HT))
1045                         status->rate_idx -= 5;
1046         } else {
1047                 status->band = IEEE80211_BAND_2GHZ;
1048         }
1049         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1050                                                       status->band);
1051
1052         *qos = rxd->qos_control;
1053         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1054             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1055                 status->flag |= RX_FLAG_MMIC_ERROR;
1056
1057         return le16_to_cpu(rxd->pkt_len);
1058 }
1059
1060 static struct rxd_ops rxd_sta_ops = {
1061         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1062         .rxd_init       = mwl8k_rxd_sta_init,
1063         .rxd_refill     = mwl8k_rxd_sta_refill,
1064         .rxd_process    = mwl8k_rxd_sta_process,
1065 };
1066
1067
1068 #define MWL8K_RX_DESCS          256
1069 #define MWL8K_RX_MAXSZ          3800
1070
1071 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1072 {
1073         struct mwl8k_priv *priv = hw->priv;
1074         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1075         int size;
1076         int i;
1077
1078         rxq->rxd_count = 0;
1079         rxq->head = 0;
1080         rxq->tail = 0;
1081
1082         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1083
1084         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1085         if (rxq->rxd == NULL) {
1086                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1087                 return -ENOMEM;
1088         }
1089         memset(rxq->rxd, 0, size);
1090
1091         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1092         if (rxq->buf == NULL) {
1093                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1094                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1095                 return -ENOMEM;
1096         }
1097
1098         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1099                 int desc_size;
1100                 void *rxd;
1101                 int nexti;
1102                 dma_addr_t next_dma_addr;
1103
1104                 desc_size = priv->rxd_ops->rxd_size;
1105                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1106
1107                 nexti = i + 1;
1108                 if (nexti == MWL8K_RX_DESCS)
1109                         nexti = 0;
1110                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1111
1112                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1113         }
1114
1115         return 0;
1116 }
1117
1118 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1119 {
1120         struct mwl8k_priv *priv = hw->priv;
1121         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1122         int refilled;
1123
1124         refilled = 0;
1125         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1126                 struct sk_buff *skb;
1127                 dma_addr_t addr;
1128                 int rx;
1129                 void *rxd;
1130
1131                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1132                 if (skb == NULL)
1133                         break;
1134
1135                 addr = pci_map_single(priv->pdev, skb->data,
1136                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1137
1138                 rxq->rxd_count++;
1139                 rx = rxq->tail++;
1140                 if (rxq->tail == MWL8K_RX_DESCS)
1141                         rxq->tail = 0;
1142                 rxq->buf[rx].skb = skb;
1143                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1144
1145                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1146                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1147
1148                 refilled++;
1149         }
1150
1151         return refilled;
1152 }
1153
1154 /* Must be called only when the card's reception is completely halted */
1155 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1156 {
1157         struct mwl8k_priv *priv = hw->priv;
1158         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1159         int i;
1160
1161         if (rxq->rxd == NULL)
1162                 return;
1163
1164         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1165                 if (rxq->buf[i].skb != NULL) {
1166                         pci_unmap_single(priv->pdev,
1167                                          dma_unmap_addr(&rxq->buf[i], dma),
1168                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1169                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1170
1171                         kfree_skb(rxq->buf[i].skb);
1172                         rxq->buf[i].skb = NULL;
1173                 }
1174         }
1175
1176         kfree(rxq->buf);
1177         rxq->buf = NULL;
1178
1179         pci_free_consistent(priv->pdev,
1180                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1181                             rxq->rxd, rxq->rxd_dma);
1182         rxq->rxd = NULL;
1183 }
1184
1185
1186 /*
1187  * Scan a list of BSSIDs to process for finalize join.
1188  * Allows for extension to process multiple BSSIDs.
1189  */
1190 static inline int
1191 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1192 {
1193         return priv->capture_beacon &&
1194                 ieee80211_is_beacon(wh->frame_control) &&
1195                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1196 }
1197
1198 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1199                                      struct sk_buff *skb)
1200 {
1201         struct mwl8k_priv *priv = hw->priv;
1202
1203         priv->capture_beacon = false;
1204         memset(priv->capture_bssid, 0, ETH_ALEN);
1205
1206         /*
1207          * Use GFP_ATOMIC as rxq_process is called from
1208          * the primary interrupt handler, memory allocation call
1209          * must not sleep.
1210          */
1211         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1212         if (priv->beacon_skb != NULL)
1213                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1214 }
1215
1216 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1217                                                    u8 *bssid)
1218 {
1219         struct mwl8k_vif *mwl8k_vif;
1220
1221         list_for_each_entry(mwl8k_vif,
1222                             vif_list, list) {
1223                 if (memcmp(bssid, mwl8k_vif->bssid,
1224                            ETH_ALEN) == 0)
1225                         return mwl8k_vif;
1226         }
1227
1228         return NULL;
1229 }
1230
1231 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1232 {
1233         struct mwl8k_priv *priv = hw->priv;
1234         struct mwl8k_vif *mwl8k_vif = NULL;
1235         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1236         int processed;
1237
1238         processed = 0;
1239         while (rxq->rxd_count && limit--) {
1240                 struct sk_buff *skb;
1241                 void *rxd;
1242                 int pkt_len;
1243                 struct ieee80211_rx_status status;
1244                 struct ieee80211_hdr *wh;
1245                 __le16 qos;
1246
1247                 skb = rxq->buf[rxq->head].skb;
1248                 if (skb == NULL)
1249                         break;
1250
1251                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1252
1253                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1254                                                         &priv->noise);
1255                 if (pkt_len < 0)
1256                         break;
1257
1258                 rxq->buf[rxq->head].skb = NULL;
1259
1260                 pci_unmap_single(priv->pdev,
1261                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1262                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1263                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1264
1265                 rxq->head++;
1266                 if (rxq->head == MWL8K_RX_DESCS)
1267                         rxq->head = 0;
1268
1269                 rxq->rxd_count--;
1270
1271                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1272
1273                 /*
1274                  * Check for a pending join operation.  Save a
1275                  * copy of the beacon and schedule a tasklet to
1276                  * send a FINALIZE_JOIN command to the firmware.
1277                  */
1278                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1279                         mwl8k_save_beacon(hw, skb);
1280
1281                 if (ieee80211_has_protected(wh->frame_control)) {
1282
1283                         /* Check if hw crypto has been enabled for
1284                          * this bss. If yes, set the status flags
1285                          * accordingly
1286                          */
1287                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1288                                                                 wh->addr1);
1289
1290                         if (mwl8k_vif != NULL &&
1291                             mwl8k_vif->is_hw_crypto_enabled == true) {
1292                                 /*
1293                                  * When MMIC ERROR is encountered
1294                                  * by the firmware, payload is
1295                                  * dropped and only 32 bytes of
1296                                  * mwl8k Firmware header is sent
1297                                  * to the host.
1298                                  *
1299                                  * We need to add four bytes of
1300                                  * key information.  In it
1301                                  * MAC80211 expects keyidx set to
1302                                  * 0 for triggering Counter
1303                                  * Measure of MMIC failure.
1304                                  */
1305                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1306                                         struct mwl8k_dma_data *tr;
1307                                         tr = (struct mwl8k_dma_data *)skb->data;
1308                                         memset((void *)&(tr->data), 0, 4);
1309                                         pkt_len += 4;
1310                                 }
1311
1312                                 if (!ieee80211_is_auth(wh->frame_control))
1313                                         status.flag |= RX_FLAG_IV_STRIPPED |
1314                                                        RX_FLAG_DECRYPTED |
1315                                                        RX_FLAG_MMIC_STRIPPED;
1316                         }
1317                 }
1318
1319                 skb_put(skb, pkt_len);
1320                 mwl8k_remove_dma_header(skb, qos);
1321                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1322                 ieee80211_rx_irqsafe(hw, skb);
1323
1324                 processed++;
1325         }
1326
1327         return processed;
1328 }
1329
1330
1331 /*
1332  * Packet transmission.
1333  */
1334
1335 #define MWL8K_TXD_STATUS_OK                     0x00000001
1336 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1337 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1338 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1339 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1340
1341 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1342 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1343 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1344 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1345 #define MWL8K_QOS_EOSP                          0x0010
1346
1347 struct mwl8k_tx_desc {
1348         __le32 status;
1349         __u8 data_rate;
1350         __u8 tx_priority;
1351         __le16 qos_control;
1352         __le32 pkt_phys_addr;
1353         __le16 pkt_len;
1354         __u8 dest_MAC_addr[ETH_ALEN];
1355         __le32 next_txd_phys_addr;
1356         __le32 timestamp;
1357         __le16 rate_info;
1358         __u8 peer_id;
1359         __u8 tx_frag_cnt;
1360 } __packed;
1361
1362 #define MWL8K_TX_DESCS          128
1363
1364 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1365 {
1366         struct mwl8k_priv *priv = hw->priv;
1367         struct mwl8k_tx_queue *txq = priv->txq + index;
1368         int size;
1369         int i;
1370
1371         txq->len = 0;
1372         txq->head = 0;
1373         txq->tail = 0;
1374
1375         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1376
1377         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1378         if (txq->txd == NULL) {
1379                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1380                 return -ENOMEM;
1381         }
1382         memset(txq->txd, 0, size);
1383
1384         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1385         if (txq->skb == NULL) {
1386                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1387                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1388                 return -ENOMEM;
1389         }
1390
1391         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1392                 struct mwl8k_tx_desc *tx_desc;
1393                 int nexti;
1394
1395                 tx_desc = txq->txd + i;
1396                 nexti = (i + 1) % MWL8K_TX_DESCS;
1397
1398                 tx_desc->status = 0;
1399                 tx_desc->next_txd_phys_addr =
1400                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1401         }
1402
1403         return 0;
1404 }
1405
1406 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1407 {
1408         iowrite32(MWL8K_H2A_INT_PPA_READY,
1409                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1410         iowrite32(MWL8K_H2A_INT_DUMMY,
1411                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1412         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1413 }
1414
1415 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1416 {
1417         struct mwl8k_priv *priv = hw->priv;
1418         int i;
1419
1420         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1421                 struct mwl8k_tx_queue *txq = priv->txq + i;
1422                 int fw_owned = 0;
1423                 int drv_owned = 0;
1424                 int unused = 0;
1425                 int desc;
1426
1427                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1428                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1429                         u32 status;
1430
1431                         status = le32_to_cpu(tx_desc->status);
1432                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1433                                 fw_owned++;
1434                         else
1435                                 drv_owned++;
1436
1437                         if (tx_desc->pkt_len == 0)
1438                                 unused++;
1439                 }
1440
1441                 wiphy_err(hw->wiphy,
1442                           "txq[%d] len=%d head=%d tail=%d "
1443                           "fw_owned=%d drv_owned=%d unused=%d\n",
1444                           i,
1445                           txq->len, txq->head, txq->tail,
1446                           fw_owned, drv_owned, unused);
1447         }
1448 }
1449
1450 /*
1451  * Must be called with priv->fw_mutex held and tx queues stopped.
1452  */
1453 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1454
1455 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1456 {
1457         struct mwl8k_priv *priv = hw->priv;
1458         DECLARE_COMPLETION_ONSTACK(tx_wait);
1459         int retry;
1460         int rc;
1461
1462         might_sleep();
1463
1464         /*
1465          * The TX queues are stopped at this point, so this test
1466          * doesn't need to take ->tx_lock.
1467          */
1468         if (!priv->pending_tx_pkts)
1469                 return 0;
1470
1471         retry = 0;
1472         rc = 0;
1473
1474         spin_lock_bh(&priv->tx_lock);
1475         priv->tx_wait = &tx_wait;
1476         while (!rc) {
1477                 int oldcount;
1478                 unsigned long timeout;
1479
1480                 oldcount = priv->pending_tx_pkts;
1481
1482                 spin_unlock_bh(&priv->tx_lock);
1483                 timeout = wait_for_completion_timeout(&tx_wait,
1484                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1485                 spin_lock_bh(&priv->tx_lock);
1486
1487                 if (timeout) {
1488                         WARN_ON(priv->pending_tx_pkts);
1489                         if (retry) {
1490                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1491                         }
1492                         break;
1493                 }
1494
1495                 if (priv->pending_tx_pkts < oldcount) {
1496                         wiphy_notice(hw->wiphy,
1497                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1498                                      oldcount, priv->pending_tx_pkts);
1499                         retry = 1;
1500                         continue;
1501                 }
1502
1503                 priv->tx_wait = NULL;
1504
1505                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1506                           MWL8K_TX_WAIT_TIMEOUT_MS);
1507                 mwl8k_dump_tx_rings(hw);
1508
1509                 rc = -ETIMEDOUT;
1510         }
1511         spin_unlock_bh(&priv->tx_lock);
1512
1513         return rc;
1514 }
1515
1516 #define MWL8K_TXD_SUCCESS(status)                               \
1517         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1518                      MWL8K_TXD_STATUS_OK_RETRY |                \
1519                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1520
1521 /* The firmware will fill in the rate information
1522  * for each packet that gets queued in the hardware
1523  * in this structure
1524  */
1525
1526 struct rateinfo {
1527         __le16  format:1;
1528         __le16  short_gi:1;
1529         __le16  band_width:1;
1530         __le16  rate_id_mcs:6;
1531         __le16  adv_coding:2;
1532         __le16  antenna:2;
1533         __le16  act_sub_chan:2;
1534         __le16  preamble_type:1;
1535         __le16  power_id:4;
1536         __le16  antenna2:1;
1537         __le16  reserved:1;
1538         __le16  tx_bf_frame:1;
1539         __le16  green_field:1;
1540 } __packed;
1541
1542 static int
1543 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1544 {
1545         struct mwl8k_priv *priv = hw->priv;
1546         struct mwl8k_tx_queue *txq = priv->txq + index;
1547         int processed;
1548
1549         processed = 0;
1550         while (txq->len > 0 && limit--) {
1551                 int tx;
1552                 struct mwl8k_tx_desc *tx_desc;
1553                 unsigned long addr;
1554                 int size;
1555                 struct sk_buff *skb;
1556                 struct ieee80211_tx_info *info;
1557                 u32 status;
1558                 struct ieee80211_sta *sta;
1559                 struct mwl8k_sta *sta_info = NULL;
1560                 u16 rate_info;
1561                 struct rateinfo *rate;
1562                 struct ieee80211_hdr *wh;
1563
1564                 tx = txq->head;
1565                 tx_desc = txq->txd + tx;
1566
1567                 status = le32_to_cpu(tx_desc->status);
1568
1569                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1570                         if (!force)
1571                                 break;
1572                         tx_desc->status &=
1573                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1574                 }
1575
1576                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1577                 BUG_ON(txq->len == 0);
1578                 txq->len--;
1579                 priv->pending_tx_pkts--;
1580
1581                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1582                 size = le16_to_cpu(tx_desc->pkt_len);
1583                 skb = txq->skb[tx];
1584                 txq->skb[tx] = NULL;
1585
1586                 BUG_ON(skb == NULL);
1587                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1588
1589                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1590
1591                 wh = (struct ieee80211_hdr *) skb->data;
1592
1593                 /* Mark descriptor as unused */
1594                 tx_desc->pkt_phys_addr = 0;
1595                 tx_desc->pkt_len = 0;
1596
1597                 info = IEEE80211_SKB_CB(skb);
1598                 if (ieee80211_is_data(wh->frame_control)) {
1599                         sta = info->control.sta;
1600                         if (sta) {
1601                                 sta_info = MWL8K_STA(sta);
1602                                 BUG_ON(sta_info == NULL);
1603                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1604                                 rate = (struct rateinfo *)&rate_info;
1605                                 /* If rate is < 6.5 Mpbs for an ht station
1606                                  * do not form an ampdu. If the station is a
1607                                  * legacy station (format = 0), do not form an
1608                                  * ampdu
1609                                  */
1610                                 if (rate->rate_id_mcs < 1 ||
1611                                     rate->format == 0) {
1612                                         sta_info->is_ampdu_allowed = false;
1613                                 } else {
1614                                         sta_info->is_ampdu_allowed = true;
1615                                 }
1616                         }
1617                 }
1618
1619                 ieee80211_tx_info_clear_status(info);
1620
1621                 /* Rate control is happening in the firmware.
1622                  * Ensure no tx rate is being reported.
1623                  */
1624                 info->status.rates[0].idx = -1;
1625                 info->status.rates[0].count = 1;
1626
1627                 if (MWL8K_TXD_SUCCESS(status))
1628                         info->flags |= IEEE80211_TX_STAT_ACK;
1629
1630                 ieee80211_tx_status_irqsafe(hw, skb);
1631
1632                 processed++;
1633         }
1634
1635         if (index < MWL8K_TX_WMM_QUEUES && processed && priv->radio_on &&
1636             !mutex_is_locked(&priv->fw_mutex))
1637                 ieee80211_wake_queue(hw, index);
1638
1639         return processed;
1640 }
1641
1642 /* must be called only when the card's transmit is completely halted */
1643 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1644 {
1645         struct mwl8k_priv *priv = hw->priv;
1646         struct mwl8k_tx_queue *txq = priv->txq + index;
1647
1648         if (txq->txd == NULL)
1649                 return;
1650
1651         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1652
1653         kfree(txq->skb);
1654         txq->skb = NULL;
1655
1656         pci_free_consistent(priv->pdev,
1657                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1658                             txq->txd, txq->txd_dma);
1659         txq->txd = NULL;
1660 }
1661
1662 /* caller must hold priv->stream_lock when calling the stream functions */
1663 struct mwl8k_ampdu_stream *
1664 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1665 {
1666         struct mwl8k_ampdu_stream *stream;
1667         struct mwl8k_priv *priv = hw->priv;
1668         int i;
1669
1670         for (i = 0; i < priv->num_ampdu_queues; i++) {
1671                 stream = &priv->ampdu[i];
1672                 if (stream->state == AMPDU_NO_STREAM) {
1673                         stream->sta = sta;
1674                         stream->state = AMPDU_STREAM_NEW;
1675                         stream->tid = tid;
1676                         stream->idx = i;
1677                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1678                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1679                                     sta->addr, tid);
1680                         return stream;
1681                 }
1682         }
1683         return NULL;
1684 }
1685
1686 static int
1687 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1688 {
1689         int ret;
1690
1691         /* if the stream has already been started, don't start it again */
1692         if (stream->state != AMPDU_STREAM_NEW)
1693                 return 0;
1694         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1695         if (ret)
1696                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1697                             "%d\n", stream->sta->addr, stream->tid, ret);
1698         else
1699                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1700                             stream->sta->addr, stream->tid);
1701         return ret;
1702 }
1703
1704 static void
1705 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1706 {
1707         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1708                     stream->tid);
1709         memset(stream, 0, sizeof(*stream));
1710 }
1711
1712 static struct mwl8k_ampdu_stream *
1713 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1714 {
1715         struct mwl8k_priv *priv = hw->priv;
1716         int i;
1717
1718         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1719                 struct mwl8k_ampdu_stream *stream;
1720                 stream = &priv->ampdu[i];
1721                 if (stream->state == AMPDU_NO_STREAM)
1722                         continue;
1723                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1724                     stream->tid == tid)
1725                         return stream;
1726         }
1727         return NULL;
1728 }
1729
1730 static void
1731 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1732 {
1733         struct mwl8k_priv *priv = hw->priv;
1734         struct ieee80211_tx_info *tx_info;
1735         struct mwl8k_vif *mwl8k_vif;
1736         struct ieee80211_sta *sta;
1737         struct ieee80211_hdr *wh;
1738         struct mwl8k_tx_queue *txq;
1739         struct mwl8k_tx_desc *tx;
1740         dma_addr_t dma;
1741         u32 txstatus;
1742         u8 txdatarate;
1743         u16 qos;
1744         int txpriority;
1745         u8 tid = 0;
1746         struct mwl8k_ampdu_stream *stream = NULL;
1747         bool start_ba_session = false;
1748
1749         wh = (struct ieee80211_hdr *)skb->data;
1750         if (ieee80211_is_data_qos(wh->frame_control))
1751                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1752         else
1753                 qos = 0;
1754
1755         if (priv->ap_fw)
1756                 mwl8k_encapsulate_tx_frame(skb);
1757         else
1758                 mwl8k_add_dma_header(skb, 0);
1759
1760         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1761
1762         tx_info = IEEE80211_SKB_CB(skb);
1763         sta = tx_info->control.sta;
1764         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1765
1766         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1767                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1768                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1769                 mwl8k_vif->seqno += 0x10;
1770         }
1771
1772         /* Setup firmware control bit fields for each frame type.  */
1773         txstatus = 0;
1774         txdatarate = 0;
1775         if (ieee80211_is_mgmt(wh->frame_control) ||
1776             ieee80211_is_ctl(wh->frame_control)) {
1777                 txdatarate = 0;
1778                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1779         } else if (ieee80211_is_data(wh->frame_control)) {
1780                 txdatarate = 1;
1781                 if (is_multicast_ether_addr(wh->addr1))
1782                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1783
1784                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1785                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1786                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1787                 else
1788                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1789         }
1790
1791         txpriority = index;
1792
1793         if (ieee80211_is_data_qos(wh->frame_control) &&
1794             skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1795             sta->ht_cap.ht_supported && priv->ap_fw) {
1796                 tid = qos & 0xf;
1797                 spin_lock(&priv->stream_lock);
1798                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1799                 if (stream != NULL) {
1800                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1801                                 txpriority = stream->txq_idx;
1802                                 index = stream->txq_idx;
1803                         } else if (stream->state == AMPDU_STREAM_NEW) {
1804                                 /* We get here if the driver sends us packets
1805                                  * after we've initiated a stream, but before
1806                                  * our ampdu_action routine has been called
1807                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1808                                  * for the ADDBA request.  So this packet can
1809                                  * go out with no risk of sequence number
1810                                  * mismatch.  No special handling is required.
1811                                  */
1812                         } else {
1813                                 /* Drop packets that would go out after the
1814                                  * ADDBA request was sent but before the ADDBA
1815                                  * response is received.  If we don't do this,
1816                                  * the recipient would probably receive it
1817                                  * after the ADDBA request with SSN 0.  This
1818                                  * will cause the recipient's BA receive window
1819                                  * to shift, which would cause the subsequent
1820                                  * packets in the BA stream to be discarded.
1821                                  * mac80211 queues our packets for us in this
1822                                  * case, so this is really just a safety check.
1823                                  */
1824                                 wiphy_warn(hw->wiphy,
1825                                            "Cannot send packet while ADDBA "
1826                                            "dialog is underway.\n");
1827                                 spin_unlock(&priv->stream_lock);
1828                                 dev_kfree_skb(skb);
1829                                 return;
1830                         }
1831                 } else {
1832                         /* Defer calling mwl8k_start_stream so that the current
1833                          * skb can go out before the ADDBA request.  This
1834                          * prevents sequence number mismatch at the recepient
1835                          * as described above.
1836                          */
1837                         if (MWL8K_STA(sta)->is_ampdu_allowed) {
1838                                 stream = mwl8k_add_stream(hw, sta, tid);
1839                                 if (stream != NULL)
1840                                         start_ba_session = true;
1841                         }
1842                 }
1843                 spin_unlock(&priv->stream_lock);
1844         }
1845
1846         dma = pci_map_single(priv->pdev, skb->data,
1847                                 skb->len, PCI_DMA_TODEVICE);
1848
1849         if (pci_dma_mapping_error(priv->pdev, dma)) {
1850                 wiphy_debug(hw->wiphy,
1851                             "failed to dma map skb, dropping TX frame.\n");
1852                 if (start_ba_session) {
1853                         spin_lock(&priv->stream_lock);
1854                         mwl8k_remove_stream(hw, stream);
1855                         spin_unlock(&priv->stream_lock);
1856                 }
1857                 dev_kfree_skb(skb);
1858                 return;
1859         }
1860
1861         spin_lock_bh(&priv->tx_lock);
1862
1863         txq = priv->txq + index;
1864
1865         if (index >= MWL8K_TX_WMM_QUEUES && txq->len >= MWL8K_TX_DESCS) {
1866                 /* This is the case in which the tx packet is destined for an
1867                  * AMPDU queue and that AMPDU queue is full.  Because we don't
1868                  * start and stop the AMPDU queues, we must drop these packets.
1869                  */
1870                 dev_kfree_skb(skb);
1871                 spin_unlock_bh(&priv->tx_lock);
1872                 return;
1873         }
1874
1875         BUG_ON(txq->skb[txq->tail] != NULL);
1876         txq->skb[txq->tail] = skb;
1877
1878         tx = txq->txd + txq->tail;
1879         tx->data_rate = txdatarate;
1880         tx->tx_priority = txpriority;
1881         tx->qos_control = cpu_to_le16(qos);
1882         tx->pkt_phys_addr = cpu_to_le32(dma);
1883         tx->pkt_len = cpu_to_le16(skb->len);
1884         tx->rate_info = 0;
1885         if (!priv->ap_fw && tx_info->control.sta != NULL)
1886                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1887         else
1888                 tx->peer_id = 0;
1889         wmb();
1890         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1891
1892         txq->len++;
1893         priv->pending_tx_pkts++;
1894
1895         txq->tail++;
1896         if (txq->tail == MWL8K_TX_DESCS)
1897                 txq->tail = 0;
1898
1899         if (txq->head == txq->tail && index < MWL8K_TX_WMM_QUEUES)
1900                 ieee80211_stop_queue(hw, index);
1901
1902         mwl8k_tx_start(priv);
1903
1904         spin_unlock_bh(&priv->tx_lock);
1905
1906         /* Initiate the ampdu session here */
1907         if (start_ba_session) {
1908                 spin_lock(&priv->stream_lock);
1909                 if (mwl8k_start_stream(hw, stream))
1910                         mwl8k_remove_stream(hw, stream);
1911                 spin_unlock(&priv->stream_lock);
1912         }
1913 }
1914
1915
1916 /*
1917  * Firmware access.
1918  *
1919  * We have the following requirements for issuing firmware commands:
1920  * - Some commands require that the packet transmit path is idle when
1921  *   the command is issued.  (For simplicity, we'll just quiesce the
1922  *   transmit path for every command.)
1923  * - There are certain sequences of commands that need to be issued to
1924  *   the hardware sequentially, with no other intervening commands.
1925  *
1926  * This leads to an implementation of a "firmware lock" as a mutex that
1927  * can be taken recursively, and which is taken by both the low-level
1928  * command submission function (mwl8k_post_cmd) as well as any users of
1929  * that function that require issuing of an atomic sequence of commands,
1930  * and quiesces the transmit path whenever it's taken.
1931  */
1932 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1933 {
1934         struct mwl8k_priv *priv = hw->priv;
1935
1936         if (priv->fw_mutex_owner != current) {
1937                 int rc;
1938
1939                 mutex_lock(&priv->fw_mutex);
1940                 ieee80211_stop_queues(hw);
1941
1942                 rc = mwl8k_tx_wait_empty(hw);
1943                 if (rc) {
1944                         ieee80211_wake_queues(hw);
1945                         mutex_unlock(&priv->fw_mutex);
1946
1947                         return rc;
1948                 }
1949
1950                 priv->fw_mutex_owner = current;
1951         }
1952
1953         priv->fw_mutex_depth++;
1954
1955         return 0;
1956 }
1957
1958 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1959 {
1960         struct mwl8k_priv *priv = hw->priv;
1961
1962         if (!--priv->fw_mutex_depth) {
1963                 ieee80211_wake_queues(hw);
1964                 priv->fw_mutex_owner = NULL;
1965                 mutex_unlock(&priv->fw_mutex);
1966         }
1967 }
1968
1969
1970 /*
1971  * Command processing.
1972  */
1973
1974 /* Timeout firmware commands after 10s */
1975 #define MWL8K_CMD_TIMEOUT_MS    10000
1976
1977 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1978 {
1979         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1980         struct mwl8k_priv *priv = hw->priv;
1981         void __iomem *regs = priv->regs;
1982         dma_addr_t dma_addr;
1983         unsigned int dma_size;
1984         int rc;
1985         unsigned long timeout = 0;
1986         u8 buf[32];
1987
1988         cmd->result = (__force __le16) 0xffff;
1989         dma_size = le16_to_cpu(cmd->length);
1990         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1991                                   PCI_DMA_BIDIRECTIONAL);
1992         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1993                 return -ENOMEM;
1994
1995         rc = mwl8k_fw_lock(hw);
1996         if (rc) {
1997                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1998                                                 PCI_DMA_BIDIRECTIONAL);
1999                 return rc;
2000         }
2001
2002         priv->hostcmd_wait = &cmd_wait;
2003         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2004         iowrite32(MWL8K_H2A_INT_DOORBELL,
2005                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2006         iowrite32(MWL8K_H2A_INT_DUMMY,
2007                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2008
2009         timeout = wait_for_completion_timeout(&cmd_wait,
2010                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2011
2012         priv->hostcmd_wait = NULL;
2013
2014         mwl8k_fw_unlock(hw);
2015
2016         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2017                                         PCI_DMA_BIDIRECTIONAL);
2018
2019         if (!timeout) {
2020                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2021                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2022                           MWL8K_CMD_TIMEOUT_MS);
2023                 rc = -ETIMEDOUT;
2024         } else {
2025                 int ms;
2026
2027                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2028
2029                 rc = cmd->result ? -EINVAL : 0;
2030                 if (rc)
2031                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2032                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2033                                   le16_to_cpu(cmd->result));
2034                 else if (ms > 2000)
2035                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2036                                      mwl8k_cmd_name(cmd->code,
2037                                                     buf, sizeof(buf)),
2038                                      ms);
2039         }
2040
2041         return rc;
2042 }
2043
2044 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2045                                  struct ieee80211_vif *vif,
2046                                  struct mwl8k_cmd_pkt *cmd)
2047 {
2048         if (vif != NULL)
2049                 cmd->macid = MWL8K_VIF(vif)->macid;
2050         return mwl8k_post_cmd(hw, cmd);
2051 }
2052
2053 /*
2054  * Setup code shared between STA and AP firmware images.
2055  */
2056 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2057 {
2058         struct mwl8k_priv *priv = hw->priv;
2059
2060         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2061         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2062
2063         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2064         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2065
2066         priv->band_24.band = IEEE80211_BAND_2GHZ;
2067         priv->band_24.channels = priv->channels_24;
2068         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2069         priv->band_24.bitrates = priv->rates_24;
2070         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2071
2072         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2073 }
2074
2075 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2076 {
2077         struct mwl8k_priv *priv = hw->priv;
2078
2079         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2080         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2081
2082         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2083         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2084
2085         priv->band_50.band = IEEE80211_BAND_5GHZ;
2086         priv->band_50.channels = priv->channels_50;
2087         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2088         priv->band_50.bitrates = priv->rates_50;
2089         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2090
2091         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2092 }
2093
2094 /*
2095  * CMD_GET_HW_SPEC (STA version).
2096  */
2097 struct mwl8k_cmd_get_hw_spec_sta {
2098         struct mwl8k_cmd_pkt header;
2099         __u8 hw_rev;
2100         __u8 host_interface;
2101         __le16 num_mcaddrs;
2102         __u8 perm_addr[ETH_ALEN];
2103         __le16 region_code;
2104         __le32 fw_rev;
2105         __le32 ps_cookie;
2106         __le32 caps;
2107         __u8 mcs_bitmap[16];
2108         __le32 rx_queue_ptr;
2109         __le32 num_tx_queues;
2110         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2111         __le32 caps2;
2112         __le32 num_tx_desc_per_queue;
2113         __le32 total_rxd;
2114 } __packed;
2115
2116 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2117 #define MWL8K_CAP_GREENFIELD            0x08000000
2118 #define MWL8K_CAP_AMPDU                 0x04000000
2119 #define MWL8K_CAP_RX_STBC               0x01000000
2120 #define MWL8K_CAP_TX_STBC               0x00800000
2121 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2122 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2123 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2124 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2125 #define MWL8K_CAP_DELAY_BA              0x00003000
2126 #define MWL8K_CAP_MIMO                  0x00000200
2127 #define MWL8K_CAP_40MHZ                 0x00000100
2128 #define MWL8K_CAP_BAND_MASK             0x00000007
2129 #define MWL8K_CAP_5GHZ                  0x00000004
2130 #define MWL8K_CAP_2GHZ4                 0x00000001
2131
2132 static void
2133 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2134                   struct ieee80211_supported_band *band, u32 cap)
2135 {
2136         int rx_streams;
2137         int tx_streams;
2138
2139         band->ht_cap.ht_supported = 1;
2140
2141         if (cap & MWL8K_CAP_MAX_AMSDU)
2142                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2143         if (cap & MWL8K_CAP_GREENFIELD)
2144                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2145         if (cap & MWL8K_CAP_AMPDU) {
2146                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2147                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2148                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2149         }
2150         if (cap & MWL8K_CAP_RX_STBC)
2151                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2152         if (cap & MWL8K_CAP_TX_STBC)
2153                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2154         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2155                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2156         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2157                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2158         if (cap & MWL8K_CAP_DELAY_BA)
2159                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2160         if (cap & MWL8K_CAP_40MHZ)
2161                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2162
2163         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2164         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2165
2166         band->ht_cap.mcs.rx_mask[0] = 0xff;
2167         if (rx_streams >= 2)
2168                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2169         if (rx_streams >= 3)
2170                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2171         band->ht_cap.mcs.rx_mask[4] = 0x01;
2172         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2173
2174         if (rx_streams != tx_streams) {
2175                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2176                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2177                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2178         }
2179 }
2180
2181 static void
2182 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2183 {
2184         struct mwl8k_priv *priv = hw->priv;
2185
2186         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2187                 mwl8k_setup_2ghz_band(hw);
2188                 if (caps & MWL8K_CAP_MIMO)
2189                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2190         }
2191
2192         if (caps & MWL8K_CAP_5GHZ) {
2193                 mwl8k_setup_5ghz_band(hw);
2194                 if (caps & MWL8K_CAP_MIMO)
2195                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2196         }
2197 }
2198
2199 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2200 {
2201         struct mwl8k_priv *priv = hw->priv;
2202         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2203         int rc;
2204         int i;
2205
2206         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2207         if (cmd == NULL)
2208                 return -ENOMEM;
2209
2210         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2211         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2212
2213         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2214         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2215         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2216         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2217         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2218                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2219         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2220         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2221
2222         rc = mwl8k_post_cmd(hw, &cmd->header);
2223
2224         if (!rc) {
2225                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2226                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2227                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2228                 priv->hw_rev = cmd->hw_rev;
2229                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2230                 priv->ap_macids_supported = 0x00000000;
2231                 priv->sta_macids_supported = 0x00000001;
2232         }
2233
2234         kfree(cmd);
2235         return rc;
2236 }
2237
2238 /*
2239  * CMD_GET_HW_SPEC (AP version).
2240  */
2241 struct mwl8k_cmd_get_hw_spec_ap {
2242         struct mwl8k_cmd_pkt header;
2243         __u8 hw_rev;
2244         __u8 host_interface;
2245         __le16 num_wcb;
2246         __le16 num_mcaddrs;
2247         __u8 perm_addr[ETH_ALEN];
2248         __le16 region_code;
2249         __le16 num_antenna;
2250         __le32 fw_rev;
2251         __le32 wcbbase0;
2252         __le32 rxwrptr;
2253         __le32 rxrdptr;
2254         __le32 ps_cookie;
2255         __le32 wcbbase1;
2256         __le32 wcbbase2;
2257         __le32 wcbbase3;
2258         __le32 fw_api_version;
2259         __le32 caps;
2260         __le32 num_of_ampdu_queues;
2261         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2262 } __packed;
2263
2264 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2265 {
2266         struct mwl8k_priv *priv = hw->priv;
2267         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2268         int rc, i;
2269         u32 api_version;
2270
2271         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2272         if (cmd == NULL)
2273                 return -ENOMEM;
2274
2275         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2276         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2277
2278         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2279         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2280
2281         rc = mwl8k_post_cmd(hw, &cmd->header);
2282
2283         if (!rc) {
2284                 int off;
2285
2286                 api_version = le32_to_cpu(cmd->fw_api_version);
2287                 if (priv->device_info->fw_api_ap != api_version) {
2288                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2289                                "  Expected %d got %d.\n", MWL8K_NAME,
2290                                priv->device_info->part_name,
2291                                priv->device_info->fw_api_ap,
2292                                api_version);
2293                         rc = -EINVAL;
2294                         goto done;
2295                 }
2296                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2297                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2298                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2299                 priv->hw_rev = cmd->hw_rev;
2300                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2301                 priv->ap_macids_supported = 0x000000ff;
2302                 priv->sta_macids_supported = 0x00000000;
2303                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2304                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2305                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2306                                    " but we only support %d.\n",
2307                                    priv->num_ampdu_queues,
2308                                    MWL8K_MAX_AMPDU_QUEUES);
2309                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2310                 }
2311                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2312                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2313
2314                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2315                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2316
2317                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2318                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2319                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2320                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2321
2322                 for (i = 0; i < priv->num_ampdu_queues; i++)
2323                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2324                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2325         }
2326
2327 done:
2328         kfree(cmd);
2329         return rc;
2330 }
2331
2332 /*
2333  * CMD_SET_HW_SPEC.
2334  */
2335 struct mwl8k_cmd_set_hw_spec {
2336         struct mwl8k_cmd_pkt header;
2337         __u8 hw_rev;
2338         __u8 host_interface;
2339         __le16 num_mcaddrs;
2340         __u8 perm_addr[ETH_ALEN];
2341         __le16 region_code;
2342         __le32 fw_rev;
2343         __le32 ps_cookie;
2344         __le32 caps;
2345         __le32 rx_queue_ptr;
2346         __le32 num_tx_queues;
2347         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2348         __le32 flags;
2349         __le32 num_tx_desc_per_queue;
2350         __le32 total_rxd;
2351 } __packed;
2352
2353 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2354  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2355  * the packets that are queued for more than 500ms, will be dropped in the
2356  * hardware. This helps minimizing the issues caused due to head-of-line
2357  * blocking where a slow client can hog the bandwidth and affect traffic to a
2358  * faster client.
2359  */
2360 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2361 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2362 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2363 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2364
2365 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2366 {
2367         struct mwl8k_priv *priv = hw->priv;
2368         struct mwl8k_cmd_set_hw_spec *cmd;
2369         int rc;
2370         int i;
2371
2372         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2373         if (cmd == NULL)
2374                 return -ENOMEM;
2375
2376         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2377         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2378
2379         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2380         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2381         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2382
2383         /*
2384          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2385          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2386          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2387          * priority is interpreted the right way in firmware.
2388          */
2389         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2390                 int j = mwl8k_tx_queues(priv) - 1 - i;
2391                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2392         }
2393
2394         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2395                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2396                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2397         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2398         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2399
2400         rc = mwl8k_post_cmd(hw, &cmd->header);
2401         kfree(cmd);
2402
2403         return rc;
2404 }
2405
2406 /*
2407  * CMD_MAC_MULTICAST_ADR.
2408  */
2409 struct mwl8k_cmd_mac_multicast_adr {
2410         struct mwl8k_cmd_pkt header;
2411         __le16 action;
2412         __le16 numaddr;
2413         __u8 addr[0][ETH_ALEN];
2414 };
2415
2416 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2417 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2418 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2419 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2420
2421 static struct mwl8k_cmd_pkt *
2422 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2423                               struct netdev_hw_addr_list *mc_list)
2424 {
2425         struct mwl8k_priv *priv = hw->priv;
2426         struct mwl8k_cmd_mac_multicast_adr *cmd;
2427         int size;
2428         int mc_count = 0;
2429
2430         if (mc_list)
2431                 mc_count = netdev_hw_addr_list_count(mc_list);
2432
2433         if (allmulti || mc_count > priv->num_mcaddrs) {
2434                 allmulti = 1;
2435                 mc_count = 0;
2436         }
2437
2438         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2439
2440         cmd = kzalloc(size, GFP_ATOMIC);
2441         if (cmd == NULL)
2442                 return NULL;
2443
2444         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2445         cmd->header.length = cpu_to_le16(size);
2446         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2447                                   MWL8K_ENABLE_RX_BROADCAST);
2448
2449         if (allmulti) {
2450                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2451         } else if (mc_count) {
2452                 struct netdev_hw_addr *ha;
2453                 int i = 0;
2454
2455                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2456                 cmd->numaddr = cpu_to_le16(mc_count);
2457                 netdev_hw_addr_list_for_each(ha, mc_list) {
2458                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2459                 }
2460         }
2461
2462         return &cmd->header;
2463 }
2464
2465 /*
2466  * CMD_GET_STAT.
2467  */
2468 struct mwl8k_cmd_get_stat {
2469         struct mwl8k_cmd_pkt header;
2470         __le32 stats[64];
2471 } __packed;
2472
2473 #define MWL8K_STAT_ACK_FAILURE  9
2474 #define MWL8K_STAT_RTS_FAILURE  12
2475 #define MWL8K_STAT_FCS_ERROR    24
2476 #define MWL8K_STAT_RTS_SUCCESS  11
2477
2478 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2479                               struct ieee80211_low_level_stats *stats)
2480 {
2481         struct mwl8k_cmd_get_stat *cmd;
2482         int rc;
2483
2484         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2485         if (cmd == NULL)
2486                 return -ENOMEM;
2487
2488         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2489         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2490
2491         rc = mwl8k_post_cmd(hw, &cmd->header);
2492         if (!rc) {
2493                 stats->dot11ACKFailureCount =
2494                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2495                 stats->dot11RTSFailureCount =
2496                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2497                 stats->dot11FCSErrorCount =
2498                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2499                 stats->dot11RTSSuccessCount =
2500                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2501         }
2502         kfree(cmd);
2503
2504         return rc;
2505 }
2506
2507 /*
2508  * CMD_RADIO_CONTROL.
2509  */
2510 struct mwl8k_cmd_radio_control {
2511         struct mwl8k_cmd_pkt header;
2512         __le16 action;
2513         __le16 control;
2514         __le16 radio_on;
2515 } __packed;
2516
2517 static int
2518 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2519 {
2520         struct mwl8k_priv *priv = hw->priv;
2521         struct mwl8k_cmd_radio_control *cmd;
2522         int rc;
2523
2524         if (enable == priv->radio_on && !force)
2525                 return 0;
2526
2527         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2528         if (cmd == NULL)
2529                 return -ENOMEM;
2530
2531         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2532         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2533         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2534         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2535         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2536
2537         rc = mwl8k_post_cmd(hw, &cmd->header);
2538         kfree(cmd);
2539
2540         if (!rc)
2541                 priv->radio_on = enable;
2542
2543         return rc;
2544 }
2545
2546 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2547 {
2548         return mwl8k_cmd_radio_control(hw, 0, 0);
2549 }
2550
2551 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2552 {
2553         return mwl8k_cmd_radio_control(hw, 1, 0);
2554 }
2555
2556 static int
2557 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2558 {
2559         struct mwl8k_priv *priv = hw->priv;
2560
2561         priv->radio_short_preamble = short_preamble;
2562
2563         return mwl8k_cmd_radio_control(hw, 1, 1);
2564 }
2565
2566 /*
2567  * CMD_RF_TX_POWER.
2568  */
2569 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2570
2571 struct mwl8k_cmd_rf_tx_power {
2572         struct mwl8k_cmd_pkt header;
2573         __le16 action;
2574         __le16 support_level;
2575         __le16 current_level;
2576         __le16 reserved;
2577         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2578 } __packed;
2579
2580 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2581 {
2582         struct mwl8k_cmd_rf_tx_power *cmd;
2583         int rc;
2584
2585         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2586         if (cmd == NULL)
2587                 return -ENOMEM;
2588
2589         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2590         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2591         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2592         cmd->support_level = cpu_to_le16(dBm);
2593
2594         rc = mwl8k_post_cmd(hw, &cmd->header);
2595         kfree(cmd);
2596
2597         return rc;
2598 }
2599
2600 /*
2601  * CMD_TX_POWER.
2602  */
2603 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2604
2605 struct mwl8k_cmd_tx_power {
2606         struct mwl8k_cmd_pkt header;
2607         __le16 action;
2608         __le16 band;
2609         __le16 channel;
2610         __le16 bw;
2611         __le16 sub_ch;
2612         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2613 } __attribute__((packed));
2614
2615 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2616                                      struct ieee80211_conf *conf,
2617                                      unsigned short pwr)
2618 {
2619         struct ieee80211_channel *channel = conf->channel;
2620         struct mwl8k_cmd_tx_power *cmd;
2621         int rc;
2622         int i;
2623
2624         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2625         if (cmd == NULL)
2626                 return -ENOMEM;
2627
2628         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2629         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2630         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2631
2632         if (channel->band == IEEE80211_BAND_2GHZ)
2633                 cmd->band = cpu_to_le16(0x1);
2634         else if (channel->band == IEEE80211_BAND_5GHZ)
2635                 cmd->band = cpu_to_le16(0x4);
2636
2637         cmd->channel = channel->hw_value;
2638
2639         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2640             conf->channel_type == NL80211_CHAN_HT20) {
2641                 cmd->bw = cpu_to_le16(0x2);
2642         } else {
2643                 cmd->bw = cpu_to_le16(0x4);
2644                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2645                         cmd->sub_ch = cpu_to_le16(0x3);
2646                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2647                         cmd->sub_ch = cpu_to_le16(0x1);
2648         }
2649
2650         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2651                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2652
2653         rc = mwl8k_post_cmd(hw, &cmd->header);
2654         kfree(cmd);
2655
2656         return rc;
2657 }
2658
2659 /*
2660  * CMD_RF_ANTENNA.
2661  */
2662 struct mwl8k_cmd_rf_antenna {
2663         struct mwl8k_cmd_pkt header;
2664         __le16 antenna;
2665         __le16 mode;
2666 } __packed;
2667
2668 #define MWL8K_RF_ANTENNA_RX             1
2669 #define MWL8K_RF_ANTENNA_TX             2
2670
2671 static int
2672 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2673 {
2674         struct mwl8k_cmd_rf_antenna *cmd;
2675         int rc;
2676
2677         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2678         if (cmd == NULL)
2679                 return -ENOMEM;
2680
2681         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2682         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2683         cmd->antenna = cpu_to_le16(antenna);
2684         cmd->mode = cpu_to_le16(mask);
2685
2686         rc = mwl8k_post_cmd(hw, &cmd->header);
2687         kfree(cmd);
2688
2689         return rc;
2690 }
2691
2692 /*
2693  * CMD_SET_BEACON.
2694  */
2695 struct mwl8k_cmd_set_beacon {
2696         struct mwl8k_cmd_pkt header;
2697         __le16 beacon_len;
2698         __u8 beacon[0];
2699 };
2700
2701 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2702                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2703 {
2704         struct mwl8k_cmd_set_beacon *cmd;
2705         int rc;
2706
2707         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2708         if (cmd == NULL)
2709                 return -ENOMEM;
2710
2711         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2712         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2713         cmd->beacon_len = cpu_to_le16(len);
2714         memcpy(cmd->beacon, beacon, len);
2715
2716         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2717         kfree(cmd);
2718
2719         return rc;
2720 }
2721
2722 /*
2723  * CMD_SET_PRE_SCAN.
2724  */
2725 struct mwl8k_cmd_set_pre_scan {
2726         struct mwl8k_cmd_pkt header;
2727 } __packed;
2728
2729 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2730 {
2731         struct mwl8k_cmd_set_pre_scan *cmd;
2732         int rc;
2733
2734         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2735         if (cmd == NULL)
2736                 return -ENOMEM;
2737
2738         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2739         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2740
2741         rc = mwl8k_post_cmd(hw, &cmd->header);
2742         kfree(cmd);
2743
2744         return rc;
2745 }
2746
2747 /*
2748  * CMD_SET_POST_SCAN.
2749  */
2750 struct mwl8k_cmd_set_post_scan {
2751         struct mwl8k_cmd_pkt header;
2752         __le32 isibss;
2753         __u8 bssid[ETH_ALEN];
2754 } __packed;
2755
2756 static int
2757 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2758 {
2759         struct mwl8k_cmd_set_post_scan *cmd;
2760         int rc;
2761
2762         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2763         if (cmd == NULL)
2764                 return -ENOMEM;
2765
2766         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2767         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2768         cmd->isibss = 0;
2769         memcpy(cmd->bssid, mac, ETH_ALEN);
2770
2771         rc = mwl8k_post_cmd(hw, &cmd->header);
2772         kfree(cmd);
2773
2774         return rc;
2775 }
2776
2777 /*
2778  * CMD_SET_RF_CHANNEL.
2779  */
2780 struct mwl8k_cmd_set_rf_channel {
2781         struct mwl8k_cmd_pkt header;
2782         __le16 action;
2783         __u8 current_channel;
2784         __le32 channel_flags;
2785 } __packed;
2786
2787 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2788                                     struct ieee80211_conf *conf)
2789 {
2790         struct ieee80211_channel *channel = conf->channel;
2791         struct mwl8k_cmd_set_rf_channel *cmd;
2792         int rc;
2793
2794         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2795         if (cmd == NULL)
2796                 return -ENOMEM;
2797
2798         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2799         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2800         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2801         cmd->current_channel = channel->hw_value;
2802
2803         if (channel->band == IEEE80211_BAND_2GHZ)
2804                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2805         else if (channel->band == IEEE80211_BAND_5GHZ)
2806                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2807
2808         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2809             conf->channel_type == NL80211_CHAN_HT20)
2810                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2811         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2812                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2813         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2814                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2815
2816         rc = mwl8k_post_cmd(hw, &cmd->header);
2817         kfree(cmd);
2818
2819         return rc;
2820 }
2821
2822 /*
2823  * CMD_SET_AID.
2824  */
2825 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2826 #define MWL8K_FRAME_PROT_11G                            0x07
2827 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2828 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2829
2830 struct mwl8k_cmd_update_set_aid {
2831         struct  mwl8k_cmd_pkt header;
2832         __le16  aid;
2833
2834          /* AP's MAC address (BSSID) */
2835         __u8    bssid[ETH_ALEN];
2836         __le16  protection_mode;
2837         __u8    supp_rates[14];
2838 } __packed;
2839
2840 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2841 {
2842         int i;
2843         int j;
2844
2845         /*
2846          * Clear nonstandard rates 4 and 13.
2847          */
2848         mask &= 0x1fef;
2849
2850         for (i = 0, j = 0; i < 14; i++) {
2851                 if (mask & (1 << i))
2852                         rates[j++] = mwl8k_rates_24[i].hw_value;
2853         }
2854 }
2855
2856 static int
2857 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2858                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2859 {
2860         struct mwl8k_cmd_update_set_aid *cmd;
2861         u16 prot_mode;
2862         int rc;
2863
2864         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2865         if (cmd == NULL)
2866                 return -ENOMEM;
2867
2868         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2869         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2870         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2871         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2872
2873         if (vif->bss_conf.use_cts_prot) {
2874                 prot_mode = MWL8K_FRAME_PROT_11G;
2875         } else {
2876                 switch (vif->bss_conf.ht_operation_mode &
2877                         IEEE80211_HT_OP_MODE_PROTECTION) {
2878                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2879                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2880                         break;
2881                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2882                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2883                         break;
2884                 default:
2885                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2886                         break;
2887                 }
2888         }
2889         cmd->protection_mode = cpu_to_le16(prot_mode);
2890
2891         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2892
2893         rc = mwl8k_post_cmd(hw, &cmd->header);
2894         kfree(cmd);
2895
2896         return rc;
2897 }
2898
2899 /*
2900  * CMD_SET_RATE.
2901  */
2902 struct mwl8k_cmd_set_rate {
2903         struct  mwl8k_cmd_pkt header;
2904         __u8    legacy_rates[14];
2905
2906         /* Bitmap for supported MCS codes.  */
2907         __u8    mcs_set[16];
2908         __u8    reserved[16];
2909 } __packed;
2910
2911 static int
2912 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2913                    u32 legacy_rate_mask, u8 *mcs_rates)
2914 {
2915         struct mwl8k_cmd_set_rate *cmd;
2916         int rc;
2917
2918         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2919         if (cmd == NULL)
2920                 return -ENOMEM;
2921
2922         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2923         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2924         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2925         memcpy(cmd->mcs_set, mcs_rates, 16);
2926
2927         rc = mwl8k_post_cmd(hw, &cmd->header);
2928         kfree(cmd);
2929
2930         return rc;
2931 }
2932
2933 /*
2934  * CMD_FINALIZE_JOIN.
2935  */
2936 #define MWL8K_FJ_BEACON_MAXLEN  128
2937
2938 struct mwl8k_cmd_finalize_join {
2939         struct mwl8k_cmd_pkt header;
2940         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2941         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2942 } __packed;
2943
2944 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2945                                    int framelen, int dtim)
2946 {
2947         struct mwl8k_cmd_finalize_join *cmd;
2948         struct ieee80211_mgmt *payload = frame;
2949         int payload_len;
2950         int rc;
2951
2952         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2953         if (cmd == NULL)
2954                 return -ENOMEM;
2955
2956         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2957         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2958         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2959
2960         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2961         if (payload_len < 0)
2962                 payload_len = 0;
2963         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2964                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2965
2966         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2967
2968         rc = mwl8k_post_cmd(hw, &cmd->header);
2969         kfree(cmd);
2970
2971         return rc;
2972 }
2973
2974 /*
2975  * CMD_SET_RTS_THRESHOLD.
2976  */
2977 struct mwl8k_cmd_set_rts_threshold {
2978         struct mwl8k_cmd_pkt header;
2979         __le16 action;
2980         __le16 threshold;
2981 } __packed;
2982
2983 static int
2984 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2985 {
2986         struct mwl8k_cmd_set_rts_threshold *cmd;
2987         int rc;
2988
2989         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2990         if (cmd == NULL)
2991                 return -ENOMEM;
2992
2993         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2994         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2995         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2996         cmd->threshold = cpu_to_le16(rts_thresh);
2997
2998         rc = mwl8k_post_cmd(hw, &cmd->header);
2999         kfree(cmd);
3000
3001         return rc;
3002 }
3003
3004 /*
3005  * CMD_SET_SLOT.
3006  */
3007 struct mwl8k_cmd_set_slot {
3008         struct mwl8k_cmd_pkt header;
3009         __le16 action;
3010         __u8 short_slot;
3011 } __packed;
3012
3013 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3014 {
3015         struct mwl8k_cmd_set_slot *cmd;
3016         int rc;
3017
3018         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3019         if (cmd == NULL)
3020                 return -ENOMEM;
3021
3022         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3023         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3024         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3025         cmd->short_slot = short_slot_time;
3026
3027         rc = mwl8k_post_cmd(hw, &cmd->header);
3028         kfree(cmd);
3029
3030         return rc;
3031 }
3032
3033 /*
3034  * CMD_SET_EDCA_PARAMS.
3035  */
3036 struct mwl8k_cmd_set_edca_params {
3037         struct mwl8k_cmd_pkt header;
3038
3039         /* See MWL8K_SET_EDCA_XXX below */
3040         __le16 action;
3041
3042         /* TX opportunity in units of 32 us */
3043         __le16 txop;
3044
3045         union {
3046                 struct {
3047                         /* Log exponent of max contention period: 0...15 */
3048                         __le32 log_cw_max;
3049
3050                         /* Log exponent of min contention period: 0...15 */
3051                         __le32 log_cw_min;
3052
3053                         /* Adaptive interframe spacing in units of 32us */
3054                         __u8 aifs;
3055
3056                         /* TX queue to configure */
3057                         __u8 txq;
3058                 } ap;
3059                 struct {
3060                         /* Log exponent of max contention period: 0...15 */
3061                         __u8 log_cw_max;
3062
3063                         /* Log exponent of min contention period: 0...15 */
3064                         __u8 log_cw_min;
3065
3066                         /* Adaptive interframe spacing in units of 32us */
3067                         __u8 aifs;
3068
3069                         /* TX queue to configure */
3070                         __u8 txq;
3071                 } sta;
3072         };
3073 } __packed;
3074
3075 #define MWL8K_SET_EDCA_CW       0x01
3076 #define MWL8K_SET_EDCA_TXOP     0x02
3077 #define MWL8K_SET_EDCA_AIFS     0x04
3078
3079 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3080                                  MWL8K_SET_EDCA_TXOP | \
3081                                  MWL8K_SET_EDCA_AIFS)
3082
3083 static int
3084 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3085                           __u16 cw_min, __u16 cw_max,
3086                           __u8 aifs, __u16 txop)
3087 {
3088         struct mwl8k_priv *priv = hw->priv;
3089         struct mwl8k_cmd_set_edca_params *cmd;
3090         int rc;
3091
3092         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3093         if (cmd == NULL)
3094                 return -ENOMEM;
3095
3096         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3097         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3098         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3099         cmd->txop = cpu_to_le16(txop);
3100         if (priv->ap_fw) {
3101                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3102                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3103                 cmd->ap.aifs = aifs;
3104                 cmd->ap.txq = qnum;
3105         } else {
3106                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3107                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3108                 cmd->sta.aifs = aifs;
3109                 cmd->sta.txq = qnum;
3110         }
3111
3112         rc = mwl8k_post_cmd(hw, &cmd->header);
3113         kfree(cmd);
3114
3115         return rc;
3116 }
3117
3118 /*
3119  * CMD_SET_WMM_MODE.
3120  */
3121 struct mwl8k_cmd_set_wmm_mode {
3122         struct mwl8k_cmd_pkt header;
3123         __le16 action;
3124 } __packed;
3125
3126 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3127 {
3128         struct mwl8k_priv *priv = hw->priv;
3129         struct mwl8k_cmd_set_wmm_mode *cmd;
3130         int rc;
3131
3132         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3133         if (cmd == NULL)
3134                 return -ENOMEM;
3135
3136         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3137         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3138         cmd->action = cpu_to_le16(!!enable);
3139
3140         rc = mwl8k_post_cmd(hw, &cmd->header);
3141         kfree(cmd);
3142
3143         if (!rc)
3144                 priv->wmm_enabled = enable;
3145
3146         return rc;
3147 }
3148
3149 /*
3150  * CMD_MIMO_CONFIG.
3151  */
3152 struct mwl8k_cmd_mimo_config {
3153         struct mwl8k_cmd_pkt header;
3154         __le32 action;
3155         __u8 rx_antenna_map;
3156         __u8 tx_antenna_map;
3157 } __packed;
3158
3159 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3160 {
3161         struct mwl8k_cmd_mimo_config *cmd;
3162         int rc;
3163
3164         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3165         if (cmd == NULL)
3166                 return -ENOMEM;
3167
3168         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3169         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3170         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3171         cmd->rx_antenna_map = rx;
3172         cmd->tx_antenna_map = tx;
3173
3174         rc = mwl8k_post_cmd(hw, &cmd->header);
3175         kfree(cmd);
3176
3177         return rc;
3178 }
3179
3180 /*
3181  * CMD_USE_FIXED_RATE (STA version).
3182  */
3183 struct mwl8k_cmd_use_fixed_rate_sta {
3184         struct mwl8k_cmd_pkt header;
3185         __le32 action;
3186         __le32 allow_rate_drop;
3187         __le32 num_rates;
3188         struct {
3189                 __le32 is_ht_rate;
3190                 __le32 enable_retry;
3191                 __le32 rate;
3192                 __le32 retry_count;
3193         } rate_entry[8];
3194         __le32 rate_type;
3195         __le32 reserved1;
3196         __le32 reserved2;
3197 } __packed;
3198
3199 #define MWL8K_USE_AUTO_RATE     0x0002
3200 #define MWL8K_UCAST_RATE        0
3201
3202 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3203 {
3204         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3205         int rc;
3206
3207         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3208         if (cmd == NULL)
3209                 return -ENOMEM;
3210
3211         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3212         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3213         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3214         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3215
3216         rc = mwl8k_post_cmd(hw, &cmd->header);
3217         kfree(cmd);
3218
3219         return rc;
3220 }
3221
3222 /*
3223  * CMD_USE_FIXED_RATE (AP version).
3224  */
3225 struct mwl8k_cmd_use_fixed_rate_ap {
3226         struct mwl8k_cmd_pkt header;
3227         __le32 action;
3228         __le32 allow_rate_drop;
3229         __le32 num_rates;
3230         struct mwl8k_rate_entry_ap {
3231                 __le32 is_ht_rate;
3232                 __le32 enable_retry;
3233                 __le32 rate;
3234                 __le32 retry_count;
3235         } rate_entry[4];
3236         u8 multicast_rate;
3237         u8 multicast_rate_type;
3238         u8 management_rate;
3239 } __packed;
3240
3241 static int
3242 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3243 {
3244         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3245         int rc;
3246
3247         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3248         if (cmd == NULL)
3249                 return -ENOMEM;
3250
3251         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3252         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3253         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3254         cmd->multicast_rate = mcast;
3255         cmd->management_rate = mgmt;
3256
3257         rc = mwl8k_post_cmd(hw, &cmd->header);
3258         kfree(cmd);
3259
3260         return rc;
3261 }
3262
3263 /*
3264  * CMD_ENABLE_SNIFFER.
3265  */
3266 struct mwl8k_cmd_enable_sniffer {
3267         struct mwl8k_cmd_pkt header;
3268         __le32 action;
3269 } __packed;
3270
3271 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3272 {
3273         struct mwl8k_cmd_enable_sniffer *cmd;
3274         int rc;
3275
3276         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3277         if (cmd == NULL)
3278                 return -ENOMEM;
3279
3280         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3281         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3282         cmd->action = cpu_to_le32(!!enable);
3283
3284         rc = mwl8k_post_cmd(hw, &cmd->header);
3285         kfree(cmd);
3286
3287         return rc;
3288 }
3289
3290 /*
3291  * CMD_SET_MAC_ADDR.
3292  */
3293 struct mwl8k_cmd_set_mac_addr {
3294         struct mwl8k_cmd_pkt header;
3295         union {
3296                 struct {
3297                         __le16 mac_type;
3298                         __u8 mac_addr[ETH_ALEN];
3299                 } mbss;
3300                 __u8 mac_addr[ETH_ALEN];
3301         };
3302 } __packed;
3303
3304 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3305 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3306 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3307 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3308
3309 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3310                                   struct ieee80211_vif *vif, u8 *mac)
3311 {
3312         struct mwl8k_priv *priv = hw->priv;
3313         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3314         struct mwl8k_cmd_set_mac_addr *cmd;
3315         int mac_type;
3316         int rc;
3317
3318         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3319         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3320                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3321                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3322                 else
3323                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3324         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3325                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3326                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3327                 else
3328                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3329         }
3330
3331         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3332         if (cmd == NULL)
3333                 return -ENOMEM;
3334
3335         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3336         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3337         if (priv->ap_fw) {
3338                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3339                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3340         } else {
3341                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3342         }
3343
3344         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3345         kfree(cmd);
3346
3347         return rc;
3348 }
3349
3350 /*
3351  * CMD_SET_RATEADAPT_MODE.
3352  */
3353 struct mwl8k_cmd_set_rate_adapt_mode {
3354         struct mwl8k_cmd_pkt header;
3355         __le16 action;
3356         __le16 mode;
3357 } __packed;
3358
3359 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3360 {
3361         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3362         int rc;
3363
3364         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3365         if (cmd == NULL)
3366                 return -ENOMEM;
3367
3368         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3369         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3370         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3371         cmd->mode = cpu_to_le16(mode);
3372
3373         rc = mwl8k_post_cmd(hw, &cmd->header);
3374         kfree(cmd);
3375
3376         return rc;
3377 }
3378
3379 /*
3380  * CMD_GET_WATCHDOG_BITMAP.
3381  */
3382 struct mwl8k_cmd_get_watchdog_bitmap {
3383         struct mwl8k_cmd_pkt header;
3384         u8      bitmap;
3385 } __packed;
3386
3387 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3388 {
3389         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3390         int rc;
3391
3392         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3393         if (cmd == NULL)
3394                 return -ENOMEM;
3395
3396         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3397         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3398
3399         rc = mwl8k_post_cmd(hw, &cmd->header);
3400         if (!rc)
3401                 *bitmap = cmd->bitmap;
3402
3403         kfree(cmd);
3404
3405         return rc;
3406 }
3407
3408 #define INVALID_BA      0xAA
3409 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3410 {
3411         int rc;
3412         u8 bitmap = 0, stream_index;
3413         struct mwl8k_ampdu_stream *streams;
3414         struct mwl8k_priv *priv =
3415                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3416
3417         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3418         if (rc)
3419                 return;
3420
3421         if (bitmap == INVALID_BA)
3422                 return;
3423
3424         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3425         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3426
3427         BUG_ON(stream_index >= priv->num_ampdu_queues);
3428
3429         streams = &priv->ampdu[stream_index];
3430
3431         if (streams->state == AMPDU_STREAM_ACTIVE)
3432                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3433
3434         return;
3435 }
3436
3437
3438 /*
3439  * CMD_BSS_START.
3440  */
3441 struct mwl8k_cmd_bss_start {
3442         struct mwl8k_cmd_pkt header;
3443         __le32 enable;
3444 } __packed;
3445
3446 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3447                                struct ieee80211_vif *vif, int enable)
3448 {
3449         struct mwl8k_cmd_bss_start *cmd;
3450         int rc;
3451
3452         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3453         if (cmd == NULL)
3454                 return -ENOMEM;
3455
3456         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3457         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3458         cmd->enable = cpu_to_le32(enable);
3459
3460         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3461         kfree(cmd);
3462
3463         return rc;
3464 }
3465
3466 /*
3467  * CMD_BASTREAM.
3468  */
3469
3470 /*
3471  * UPSTREAM is tx direction
3472  */
3473 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3474 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3475
3476 enum {
3477         MWL8K_BA_CREATE,
3478         MWL8K_BA_UPDATE,
3479         MWL8K_BA_DESTROY,
3480         MWL8K_BA_FLUSH,
3481         MWL8K_BA_CHECK,
3482 } ba_stream_action_type;
3483
3484
3485 struct mwl8k_create_ba_stream {
3486         __le32  flags;
3487         __le32  idle_thrs;
3488         __le32  bar_thrs;
3489         __le32  window_size;
3490         u8      peer_mac_addr[6];
3491         u8      dialog_token;
3492         u8      tid;
3493         u8      queue_id;
3494         u8      param_info;
3495         __le32  ba_context;
3496         u8      reset_seq_no_flag;
3497         __le16  curr_seq_no;
3498         u8      sta_src_mac_addr[6];
3499 } __packed;
3500
3501 struct mwl8k_destroy_ba_stream {
3502         __le32  flags;
3503         __le32  ba_context;
3504 } __packed;
3505
3506 struct mwl8k_cmd_bastream {
3507         struct mwl8k_cmd_pkt    header;
3508         __le32  action;
3509         union {
3510                 struct mwl8k_create_ba_stream   create_params;
3511                 struct mwl8k_destroy_ba_stream  destroy_params;
3512         };
3513 } __packed;
3514
3515 static int
3516 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3517 {
3518         struct mwl8k_cmd_bastream *cmd;
3519         int rc;
3520
3521         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3522         if (cmd == NULL)
3523                 return -ENOMEM;
3524
3525         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3526         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3527
3528         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3529
3530         cmd->create_params.queue_id = stream->idx;
3531         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3532                ETH_ALEN);
3533         cmd->create_params.tid = stream->tid;
3534
3535         cmd->create_params.flags =
3536                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3537                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3538
3539         rc = mwl8k_post_cmd(hw, &cmd->header);
3540
3541         kfree(cmd);
3542
3543         return rc;
3544 }
3545
3546 static int
3547 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3548                 u8 buf_size)
3549 {
3550         struct mwl8k_cmd_bastream *cmd;
3551         int rc;
3552
3553         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3554         if (cmd == NULL)
3555                 return -ENOMEM;
3556
3557
3558         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3559         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3560
3561         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3562
3563         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3564         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3565         cmd->create_params.queue_id = stream->idx;
3566
3567         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3568         cmd->create_params.tid = stream->tid;
3569         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3570         cmd->create_params.reset_seq_no_flag = 1;
3571
3572         cmd->create_params.param_info =
3573                 (stream->sta->ht_cap.ampdu_factor &
3574                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3575                 ((stream->sta->ht_cap.ampdu_density << 2) &
3576                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3577
3578         cmd->create_params.flags =
3579                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3580                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3581
3582         rc = mwl8k_post_cmd(hw, &cmd->header);
3583
3584         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3585                 stream->sta->addr, stream->tid);
3586         kfree(cmd);
3587
3588         return rc;
3589 }
3590
3591 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3592                              struct mwl8k_ampdu_stream *stream)
3593 {
3594         struct mwl8k_cmd_bastream *cmd;
3595
3596         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3597         if (cmd == NULL)
3598                 return;
3599
3600         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3601         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3602         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3603
3604         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3605         mwl8k_post_cmd(hw, &cmd->header);
3606
3607         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3608
3609         kfree(cmd);
3610 }
3611
3612 /*
3613  * CMD_SET_NEW_STN.
3614  */
3615 struct mwl8k_cmd_set_new_stn {
3616         struct mwl8k_cmd_pkt header;
3617         __le16 aid;
3618         __u8 mac_addr[6];
3619         __le16 stn_id;
3620         __le16 action;
3621         __le16 rsvd;
3622         __le32 legacy_rates;
3623         __u8 ht_rates[4];
3624         __le16 cap_info;
3625         __le16 ht_capabilities_info;
3626         __u8 mac_ht_param_info;
3627         __u8 rev;
3628         __u8 control_channel;
3629         __u8 add_channel;
3630         __le16 op_mode;
3631         __le16 stbc;
3632         __u8 add_qos_info;
3633         __u8 is_qos_sta;
3634         __le32 fw_sta_ptr;
3635 } __packed;
3636
3637 #define MWL8K_STA_ACTION_ADD            0
3638 #define MWL8K_STA_ACTION_REMOVE         2
3639
3640 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3641                                      struct ieee80211_vif *vif,
3642                                      struct ieee80211_sta *sta)
3643 {
3644         struct mwl8k_cmd_set_new_stn *cmd;
3645         u32 rates;
3646         int rc;
3647
3648         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3649         if (cmd == NULL)
3650                 return -ENOMEM;
3651
3652         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3653         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3654         cmd->aid = cpu_to_le16(sta->aid);
3655         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3656         cmd->stn_id = cpu_to_le16(sta->aid);
3657         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3658         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3659                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3660         else
3661                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3662         cmd->legacy_rates = cpu_to_le32(rates);
3663         if (sta->ht_cap.ht_supported) {
3664                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3665                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3666                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3667                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3668                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3669                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3670                         ((sta->ht_cap.ampdu_density & 7) << 2);
3671                 cmd->is_qos_sta = 1;
3672         }
3673
3674         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3675         kfree(cmd);
3676
3677         return rc;
3678 }
3679
3680 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3681                                           struct ieee80211_vif *vif)
3682 {
3683         struct mwl8k_cmd_set_new_stn *cmd;
3684         int rc;
3685
3686         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3687         if (cmd == NULL)
3688                 return -ENOMEM;
3689
3690         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3691         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3692         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3693
3694         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3695         kfree(cmd);
3696
3697         return rc;
3698 }
3699
3700 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3701                                      struct ieee80211_vif *vif, u8 *addr)
3702 {
3703         struct mwl8k_cmd_set_new_stn *cmd;
3704         int rc;
3705
3706         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3707         if (cmd == NULL)
3708                 return -ENOMEM;
3709
3710         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3711         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3712         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3713         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3714
3715         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3716         kfree(cmd);
3717
3718         return rc;
3719 }
3720
3721 /*
3722  * CMD_UPDATE_ENCRYPTION.
3723  */
3724
3725 #define MAX_ENCR_KEY_LENGTH     16
3726 #define MIC_KEY_LENGTH          8
3727
3728 struct mwl8k_cmd_update_encryption {
3729         struct mwl8k_cmd_pkt header;
3730
3731         __le32 action;
3732         __le32 reserved;
3733         __u8 mac_addr[6];
3734         __u8 encr_type;
3735
3736 } __attribute__((packed));
3737
3738 struct mwl8k_cmd_set_key {
3739         struct mwl8k_cmd_pkt header;
3740
3741         __le32 action;
3742         __le32 reserved;
3743         __le16 length;
3744         __le16 key_type_id;
3745         __le32 key_info;
3746         __le32 key_id;
3747         __le16 key_len;
3748         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3749         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3750         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3751         __le16 tkip_rsc_low;
3752         __le32 tkip_rsc_high;
3753         __le16 tkip_tsc_low;
3754         __le32 tkip_tsc_high;
3755         __u8 mac_addr[6];
3756 } __attribute__((packed));
3757
3758 enum {
3759         MWL8K_ENCR_ENABLE,
3760         MWL8K_ENCR_SET_KEY,
3761         MWL8K_ENCR_REMOVE_KEY,
3762         MWL8K_ENCR_SET_GROUP_KEY,
3763 };
3764
3765 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3766 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3767 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3768 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3769 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3770
3771 enum {
3772         MWL8K_ALG_WEP,
3773         MWL8K_ALG_TKIP,
3774         MWL8K_ALG_CCMP,
3775 };
3776
3777 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3778 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3779 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3780 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3781 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3782
3783 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3784                                               struct ieee80211_vif *vif,
3785                                               u8 *addr,
3786                                               u8 encr_type)
3787 {
3788         struct mwl8k_cmd_update_encryption *cmd;
3789         int rc;
3790
3791         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3792         if (cmd == NULL)
3793                 return -ENOMEM;
3794
3795         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3796         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3797         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3798         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3799         cmd->encr_type = encr_type;
3800
3801         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3802         kfree(cmd);
3803
3804         return rc;
3805 }
3806
3807 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3808                                                 u8 *addr,
3809                                                 struct ieee80211_key_conf *key)
3810 {
3811         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3812         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3813         cmd->length = cpu_to_le16(sizeof(*cmd) -
3814                                 offsetof(struct mwl8k_cmd_set_key, length));
3815         cmd->key_id = cpu_to_le32(key->keyidx);
3816         cmd->key_len = cpu_to_le16(key->keylen);
3817         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3818
3819         switch (key->cipher) {
3820         case WLAN_CIPHER_SUITE_WEP40:
3821         case WLAN_CIPHER_SUITE_WEP104:
3822                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3823                 if (key->keyidx == 0)
3824                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3825
3826                 break;
3827         case WLAN_CIPHER_SUITE_TKIP:
3828                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3829                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3830                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3831                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3832                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3833                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3834                 break;
3835         case WLAN_CIPHER_SUITE_CCMP:
3836                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3837                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3838                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3839                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3840                 break;
3841         default:
3842                 return -ENOTSUPP;
3843         }
3844
3845         return 0;
3846 }
3847
3848 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3849                                                 struct ieee80211_vif *vif,
3850                                                 u8 *addr,
3851                                                 struct ieee80211_key_conf *key)
3852 {
3853         struct mwl8k_cmd_set_key *cmd;
3854         int rc;
3855         int keymlen;
3856         u32 action;
3857         u8 idx;
3858         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3859
3860         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3861         if (cmd == NULL)
3862                 return -ENOMEM;
3863
3864         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3865         if (rc < 0)
3866                 goto done;
3867
3868         idx = key->keyidx;
3869
3870         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3871                 action = MWL8K_ENCR_SET_KEY;
3872         else
3873                 action = MWL8K_ENCR_SET_GROUP_KEY;
3874
3875         switch (key->cipher) {
3876         case WLAN_CIPHER_SUITE_WEP40:
3877         case WLAN_CIPHER_SUITE_WEP104:
3878                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3879                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3880                                                 sizeof(*key) + key->keylen);
3881                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
3882                 }
3883
3884                 keymlen = 0;
3885                 action = MWL8K_ENCR_SET_KEY;
3886                 break;
3887         case WLAN_CIPHER_SUITE_TKIP:
3888                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3889                 break;
3890         case WLAN_CIPHER_SUITE_CCMP:
3891                 keymlen = key->keylen;
3892                 break;
3893         default:
3894                 rc = -ENOTSUPP;
3895                 goto done;
3896         }
3897
3898         memcpy(cmd->key_material, key->key, keymlen);
3899         cmd->action = cpu_to_le32(action);
3900
3901         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3902 done:
3903         kfree(cmd);
3904
3905         return rc;
3906 }
3907
3908 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3909                                                 struct ieee80211_vif *vif,
3910                                                 u8 *addr,
3911                                                 struct ieee80211_key_conf *key)
3912 {
3913         struct mwl8k_cmd_set_key *cmd;
3914         int rc;
3915         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3916
3917         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3918         if (cmd == NULL)
3919                 return -ENOMEM;
3920
3921         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3922         if (rc < 0)
3923                 goto done;
3924
3925         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3926                         WLAN_CIPHER_SUITE_WEP104)
3927                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3928
3929         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3930
3931         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3932 done:
3933         kfree(cmd);
3934
3935         return rc;
3936 }
3937
3938 static int mwl8k_set_key(struct ieee80211_hw *hw,
3939                          enum set_key_cmd cmd_param,
3940                          struct ieee80211_vif *vif,
3941                          struct ieee80211_sta *sta,
3942                          struct ieee80211_key_conf *key)
3943 {
3944         int rc = 0;
3945         u8 encr_type;
3946         u8 *addr;
3947         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3948
3949         if (vif->type == NL80211_IFTYPE_STATION)
3950                 return -EOPNOTSUPP;
3951
3952         if (sta == NULL)
3953                 addr = hw->wiphy->perm_addr;
3954         else
3955                 addr = sta->addr;
3956
3957         if (cmd_param == SET_KEY) {
3958                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3959                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
3960                 if (rc)
3961                         goto out;
3962
3963                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
3964                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
3965                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
3966                 else
3967                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
3968
3969                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
3970                                                                 encr_type);
3971                 if (rc)
3972                         goto out;
3973
3974                 mwl8k_vif->is_hw_crypto_enabled = true;
3975
3976         } else {
3977                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
3978
3979                 if (rc)
3980                         goto out;
3981
3982                 mwl8k_vif->is_hw_crypto_enabled = false;
3983
3984         }
3985 out:
3986         return rc;
3987 }
3988
3989 /*
3990  * CMD_UPDATE_STADB.
3991  */
3992 struct ewc_ht_info {
3993         __le16  control1;
3994         __le16  control2;
3995         __le16  control3;
3996 } __packed;
3997
3998 struct peer_capability_info {
3999         /* Peer type - AP vs. STA.  */
4000         __u8    peer_type;
4001
4002         /* Basic 802.11 capabilities from assoc resp.  */
4003         __le16  basic_caps;
4004
4005         /* Set if peer supports 802.11n high throughput (HT).  */
4006         __u8    ht_support;
4007
4008         /* Valid if HT is supported.  */
4009         __le16  ht_caps;
4010         __u8    extended_ht_caps;
4011         struct ewc_ht_info      ewc_info;
4012
4013         /* Legacy rate table. Intersection of our rates and peer rates.  */
4014         __u8    legacy_rates[12];
4015
4016         /* HT rate table. Intersection of our rates and peer rates.  */
4017         __u8    ht_rates[16];
4018         __u8    pad[16];
4019
4020         /* If set, interoperability mode, no proprietary extensions.  */
4021         __u8    interop;
4022         __u8    pad2;
4023         __u8    station_id;
4024         __le16  amsdu_enabled;
4025 } __packed;
4026
4027 struct mwl8k_cmd_update_stadb {
4028         struct mwl8k_cmd_pkt header;
4029
4030         /* See STADB_ACTION_TYPE */
4031         __le32  action;
4032
4033         /* Peer MAC address */
4034         __u8    peer_addr[ETH_ALEN];
4035
4036         __le32  reserved;
4037
4038         /* Peer info - valid during add/update.  */
4039         struct peer_capability_info     peer_info;
4040 } __packed;
4041
4042 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4043 #define MWL8K_STA_DB_DEL_ENTRY          2
4044
4045 /* Peer Entry flags - used to define the type of the peer node */
4046 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4047
4048 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4049                                       struct ieee80211_vif *vif,
4050                                       struct ieee80211_sta *sta)
4051 {
4052         struct mwl8k_cmd_update_stadb *cmd;
4053         struct peer_capability_info *p;
4054         u32 rates;
4055         int rc;
4056
4057         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4058         if (cmd == NULL)
4059                 return -ENOMEM;
4060
4061         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4062         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4063         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4064         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4065
4066         p = &cmd->peer_info;
4067         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4068         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4069         p->ht_support = sta->ht_cap.ht_supported;
4070         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4071         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4072                 ((sta->ht_cap.ampdu_density & 7) << 2);
4073         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4074                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4075         else
4076                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4077         legacy_rate_mask_to_array(p->legacy_rates, rates);
4078         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4079         p->interop = 1;
4080         p->amsdu_enabled = 0;
4081
4082         rc = mwl8k_post_cmd(hw, &cmd->header);
4083         kfree(cmd);
4084
4085         return rc ? rc : p->station_id;
4086 }
4087
4088 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4089                                       struct ieee80211_vif *vif, u8 *addr)
4090 {
4091         struct mwl8k_cmd_update_stadb *cmd;
4092         int rc;
4093
4094         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4095         if (cmd == NULL)
4096                 return -ENOMEM;
4097
4098         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4099         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4100         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4101         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4102
4103         rc = mwl8k_post_cmd(hw, &cmd->header);
4104         kfree(cmd);
4105
4106         return rc;
4107 }
4108
4109
4110 /*
4111  * Interrupt handling.
4112  */
4113 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4114 {
4115         struct ieee80211_hw *hw = dev_id;
4116         struct mwl8k_priv *priv = hw->priv;
4117         u32 status;
4118
4119         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4120         if (!status)
4121                 return IRQ_NONE;
4122
4123         if (status & MWL8K_A2H_INT_TX_DONE) {
4124                 status &= ~MWL8K_A2H_INT_TX_DONE;
4125                 tasklet_schedule(&priv->poll_tx_task);
4126         }
4127
4128         if (status & MWL8K_A2H_INT_RX_READY) {
4129                 status &= ~MWL8K_A2H_INT_RX_READY;
4130                 tasklet_schedule(&priv->poll_rx_task);
4131         }
4132
4133         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4134                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4135                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4136         }
4137
4138         if (status)
4139                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4140
4141         if (status & MWL8K_A2H_INT_OPC_DONE) {
4142                 if (priv->hostcmd_wait != NULL)
4143                         complete(priv->hostcmd_wait);
4144         }
4145
4146         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4147                 if (!mutex_is_locked(&priv->fw_mutex) &&
4148                     priv->radio_on && priv->pending_tx_pkts)
4149                         mwl8k_tx_start(priv);
4150         }
4151
4152         return IRQ_HANDLED;
4153 }
4154
4155 static void mwl8k_tx_poll(unsigned long data)
4156 {
4157         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4158         struct mwl8k_priv *priv = hw->priv;
4159         int limit;
4160         int i;
4161
4162         limit = 32;
4163
4164         spin_lock_bh(&priv->tx_lock);
4165
4166         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4167                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4168
4169         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4170                 complete(priv->tx_wait);
4171                 priv->tx_wait = NULL;
4172         }
4173
4174         spin_unlock_bh(&priv->tx_lock);
4175
4176         if (limit) {
4177                 writel(~MWL8K_A2H_INT_TX_DONE,
4178                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4179         } else {
4180                 tasklet_schedule(&priv->poll_tx_task);
4181         }
4182 }
4183
4184 static void mwl8k_rx_poll(unsigned long data)
4185 {
4186         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4187         struct mwl8k_priv *priv = hw->priv;
4188         int limit;
4189
4190         limit = 32;
4191         limit -= rxq_process(hw, 0, limit);
4192         limit -= rxq_refill(hw, 0, limit);
4193
4194         if (limit) {
4195                 writel(~MWL8K_A2H_INT_RX_READY,
4196                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4197         } else {
4198                 tasklet_schedule(&priv->poll_rx_task);
4199         }
4200 }
4201
4202
4203 /*
4204  * Core driver operations.
4205  */
4206 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4207 {
4208         struct mwl8k_priv *priv = hw->priv;
4209         int index = skb_get_queue_mapping(skb);
4210
4211         if (!priv->radio_on) {
4212                 wiphy_debug(hw->wiphy,
4213                             "dropped TX frame since radio disabled\n");
4214                 dev_kfree_skb(skb);
4215                 return;
4216         }
4217
4218         mwl8k_txq_xmit(hw, index, skb);
4219 }
4220
4221 static int mwl8k_start(struct ieee80211_hw *hw)
4222 {
4223         struct mwl8k_priv *priv = hw->priv;
4224         int rc;
4225
4226         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4227                          IRQF_SHARED, MWL8K_NAME, hw);
4228         if (rc) {
4229                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4230                 return -EIO;
4231         }
4232
4233         /* Enable TX reclaim and RX tasklets.  */
4234         tasklet_enable(&priv->poll_tx_task);
4235         tasklet_enable(&priv->poll_rx_task);
4236
4237         /* Enable interrupts */
4238         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4239
4240         rc = mwl8k_fw_lock(hw);
4241         if (!rc) {
4242                 rc = mwl8k_cmd_radio_enable(hw);
4243
4244                 if (!priv->ap_fw) {
4245                         if (!rc)
4246                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4247
4248                         if (!rc)
4249                                 rc = mwl8k_cmd_set_pre_scan(hw);
4250
4251                         if (!rc)
4252                                 rc = mwl8k_cmd_set_post_scan(hw,
4253                                                 "\x00\x00\x00\x00\x00\x00");
4254                 }
4255
4256                 if (!rc)
4257                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4258
4259                 if (!rc)
4260                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4261
4262                 mwl8k_fw_unlock(hw);
4263         }
4264
4265         if (rc) {
4266                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4267                 free_irq(priv->pdev->irq, hw);
4268                 tasklet_disable(&priv->poll_tx_task);
4269                 tasklet_disable(&priv->poll_rx_task);
4270         }
4271
4272         return rc;
4273 }
4274
4275 static void mwl8k_stop(struct ieee80211_hw *hw)
4276 {
4277         struct mwl8k_priv *priv = hw->priv;
4278         int i;
4279
4280         mwl8k_cmd_radio_disable(hw);
4281
4282         ieee80211_stop_queues(hw);
4283
4284         /* Disable interrupts */
4285         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4286         free_irq(priv->pdev->irq, hw);
4287
4288         /* Stop finalize join worker */
4289         cancel_work_sync(&priv->finalize_join_worker);
4290         cancel_work_sync(&priv->watchdog_ba_handle);
4291         if (priv->beacon_skb != NULL)
4292                 dev_kfree_skb(priv->beacon_skb);
4293
4294         /* Stop TX reclaim and RX tasklets.  */
4295         tasklet_disable(&priv->poll_tx_task);
4296         tasklet_disable(&priv->poll_rx_task);
4297
4298         /* Return all skbs to mac80211 */
4299         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4300                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4301 }
4302
4303 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4304
4305 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4306                                struct ieee80211_vif *vif)
4307 {
4308         struct mwl8k_priv *priv = hw->priv;
4309         struct mwl8k_vif *mwl8k_vif;
4310         u32 macids_supported;
4311         int macid, rc;
4312         struct mwl8k_device_info *di;
4313
4314         /*
4315          * Reject interface creation if sniffer mode is active, as
4316          * STA operation is mutually exclusive with hardware sniffer
4317          * mode.  (Sniffer mode is only used on STA firmware.)
4318          */
4319         if (priv->sniffer_enabled) {
4320                 wiphy_info(hw->wiphy,
4321                            "unable to create STA interface because sniffer mode is enabled\n");
4322                 return -EINVAL;
4323         }
4324
4325         di = priv->device_info;
4326         switch (vif->type) {
4327         case NL80211_IFTYPE_AP:
4328                 if (!priv->ap_fw && di->fw_image_ap) {
4329                         /* we must load the ap fw to meet this request */
4330                         if (!list_empty(&priv->vif_list))
4331                                 return -EBUSY;
4332                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4333                         if (rc)
4334                                 return rc;
4335                 }
4336                 macids_supported = priv->ap_macids_supported;
4337                 break;
4338         case NL80211_IFTYPE_STATION:
4339                 if (priv->ap_fw && di->fw_image_sta) {
4340                         /* we must load the sta fw to meet this request */
4341                         if (!list_empty(&priv->vif_list))
4342                                 return -EBUSY;
4343                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4344                         if (rc)
4345                                 return rc;
4346                 }
4347                 macids_supported = priv->sta_macids_supported;
4348                 break;
4349         default:
4350                 return -EINVAL;
4351         }
4352
4353         macid = ffs(macids_supported & ~priv->macids_used);
4354         if (!macid--)
4355                 return -EBUSY;
4356
4357         /* Setup driver private area. */
4358         mwl8k_vif = MWL8K_VIF(vif);
4359         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4360         mwl8k_vif->vif = vif;
4361         mwl8k_vif->macid = macid;
4362         mwl8k_vif->seqno = 0;
4363         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4364         mwl8k_vif->is_hw_crypto_enabled = false;
4365
4366         /* Set the mac address.  */
4367         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4368
4369         if (priv->ap_fw)
4370                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4371
4372         priv->macids_used |= 1 << mwl8k_vif->macid;
4373         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4374
4375         return 0;
4376 }
4377
4378 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4379                                    struct ieee80211_vif *vif)
4380 {
4381         struct mwl8k_priv *priv = hw->priv;
4382         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4383
4384         if (priv->ap_fw)
4385                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4386
4387         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4388
4389         priv->macids_used &= ~(1 << mwl8k_vif->macid);
4390         list_del(&mwl8k_vif->list);
4391 }
4392
4393 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4394 {
4395         struct ieee80211_conf *conf = &hw->conf;
4396         struct mwl8k_priv *priv = hw->priv;
4397         int rc;
4398
4399         if (conf->flags & IEEE80211_CONF_IDLE) {
4400                 mwl8k_cmd_radio_disable(hw);
4401                 return 0;
4402         }
4403
4404         rc = mwl8k_fw_lock(hw);
4405         if (rc)
4406                 return rc;
4407
4408         rc = mwl8k_cmd_radio_enable(hw);
4409         if (rc)
4410                 goto out;
4411
4412         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4413         if (rc)
4414                 goto out;
4415
4416         if (conf->power_level > 18)
4417                 conf->power_level = 18;
4418
4419         if (priv->ap_fw) {
4420                 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4421                 if (rc)
4422                         goto out;
4423
4424                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4425                 if (rc)
4426                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4427                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4428                 if (rc)
4429                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4430
4431         } else {
4432                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4433                 if (rc)
4434                         goto out;
4435                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4436         }
4437
4438 out:
4439         mwl8k_fw_unlock(hw);
4440
4441         return rc;
4442 }
4443
4444 static void
4445 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4446                            struct ieee80211_bss_conf *info, u32 changed)
4447 {
4448         struct mwl8k_priv *priv = hw->priv;
4449         u32 ap_legacy_rates;
4450         u8 ap_mcs_rates[16];
4451         int rc;
4452
4453         if (mwl8k_fw_lock(hw))
4454                 return;
4455
4456         /*
4457          * No need to capture a beacon if we're no longer associated.
4458          */
4459         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4460                 priv->capture_beacon = false;
4461
4462         /*
4463          * Get the AP's legacy and MCS rates.
4464          */
4465         if (vif->bss_conf.assoc) {
4466                 struct ieee80211_sta *ap;
4467
4468                 rcu_read_lock();
4469
4470                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4471                 if (ap == NULL) {
4472                         rcu_read_unlock();
4473                         goto out;
4474                 }
4475
4476                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4477                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4478                 } else {
4479                         ap_legacy_rates =
4480                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4481                 }
4482                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4483
4484                 rcu_read_unlock();
4485         }
4486
4487         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4488                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4489                 if (rc)
4490                         goto out;
4491
4492                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4493                 if (rc)
4494                         goto out;
4495         }
4496
4497         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4498                 rc = mwl8k_set_radio_preamble(hw,
4499                                 vif->bss_conf.use_short_preamble);
4500                 if (rc)
4501                         goto out;
4502         }
4503
4504         if (changed & BSS_CHANGED_ERP_SLOT) {
4505                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4506                 if (rc)
4507                         goto out;
4508         }
4509
4510         if (vif->bss_conf.assoc &&
4511             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4512                         BSS_CHANGED_HT))) {
4513                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4514                 if (rc)
4515                         goto out;
4516         }
4517
4518         if (vif->bss_conf.assoc &&
4519             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4520                 /*
4521                  * Finalize the join.  Tell rx handler to process
4522                  * next beacon from our BSSID.
4523                  */
4524                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4525                 priv->capture_beacon = true;
4526         }
4527
4528 out:
4529         mwl8k_fw_unlock(hw);
4530 }
4531
4532 static void
4533 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4534                           struct ieee80211_bss_conf *info, u32 changed)
4535 {
4536         int rc;
4537
4538         if (mwl8k_fw_lock(hw))
4539                 return;
4540
4541         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4542                 rc = mwl8k_set_radio_preamble(hw,
4543                                 vif->bss_conf.use_short_preamble);
4544                 if (rc)
4545                         goto out;
4546         }
4547
4548         if (changed & BSS_CHANGED_BASIC_RATES) {
4549                 int idx;
4550                 int rate;
4551
4552                 /*
4553                  * Use lowest supported basic rate for multicasts
4554                  * and management frames (such as probe responses --
4555                  * beacons will always go out at 1 Mb/s).
4556                  */
4557                 idx = ffs(vif->bss_conf.basic_rates);
4558                 if (idx)
4559                         idx--;
4560
4561                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4562                         rate = mwl8k_rates_24[idx].hw_value;
4563                 else
4564                         rate = mwl8k_rates_50[idx].hw_value;
4565
4566                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4567         }
4568
4569         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4570                 struct sk_buff *skb;
4571
4572                 skb = ieee80211_beacon_get(hw, vif);
4573                 if (skb != NULL) {
4574                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4575                         kfree_skb(skb);
4576                 }
4577         }
4578
4579         if (changed & BSS_CHANGED_BEACON_ENABLED)
4580                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4581
4582 out:
4583         mwl8k_fw_unlock(hw);
4584 }
4585
4586 static void
4587 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4588                        struct ieee80211_bss_conf *info, u32 changed)
4589 {
4590         struct mwl8k_priv *priv = hw->priv;
4591
4592         if (!priv->ap_fw)
4593                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4594         else
4595                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4596 }
4597
4598 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4599                                    struct netdev_hw_addr_list *mc_list)
4600 {
4601         struct mwl8k_cmd_pkt *cmd;
4602
4603         /*
4604          * Synthesize and return a command packet that programs the
4605          * hardware multicast address filter.  At this point we don't
4606          * know whether FIF_ALLMULTI is being requested, but if it is,
4607          * we'll end up throwing this packet away and creating a new
4608          * one in mwl8k_configure_filter().
4609          */
4610         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4611
4612         return (unsigned long)cmd;
4613 }
4614
4615 static int
4616 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4617                                unsigned int changed_flags,
4618                                unsigned int *total_flags)
4619 {
4620         struct mwl8k_priv *priv = hw->priv;
4621
4622         /*
4623          * Hardware sniffer mode is mutually exclusive with STA
4624          * operation, so refuse to enable sniffer mode if a STA
4625          * interface is active.
4626          */
4627         if (!list_empty(&priv->vif_list)) {
4628                 if (net_ratelimit())
4629                         wiphy_info(hw->wiphy,
4630                                    "not enabling sniffer mode because STA interface is active\n");
4631                 return 0;
4632         }
4633
4634         if (!priv->sniffer_enabled) {
4635                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4636                         return 0;
4637                 priv->sniffer_enabled = true;
4638         }
4639
4640         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4641                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4642                         FIF_OTHER_BSS;
4643
4644         return 1;
4645 }
4646
4647 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4648 {
4649         if (!list_empty(&priv->vif_list))
4650                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4651
4652         return NULL;
4653 }
4654
4655 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4656                                    unsigned int changed_flags,
4657                                    unsigned int *total_flags,
4658                                    u64 multicast)
4659 {
4660         struct mwl8k_priv *priv = hw->priv;
4661         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4662
4663         /*
4664          * AP firmware doesn't allow fine-grained control over
4665          * the receive filter.
4666          */
4667         if (priv->ap_fw) {
4668                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4669                 kfree(cmd);
4670                 return;
4671         }
4672
4673         /*
4674          * Enable hardware sniffer mode if FIF_CONTROL or
4675          * FIF_OTHER_BSS is requested.
4676          */
4677         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4678             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4679                 kfree(cmd);
4680                 return;
4681         }
4682
4683         /* Clear unsupported feature flags */
4684         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4685
4686         if (mwl8k_fw_lock(hw)) {
4687                 kfree(cmd);
4688                 return;
4689         }
4690
4691         if (priv->sniffer_enabled) {
4692                 mwl8k_cmd_enable_sniffer(hw, 0);
4693                 priv->sniffer_enabled = false;
4694         }
4695
4696         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4697                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4698                         /*
4699                          * Disable the BSS filter.
4700                          */
4701                         mwl8k_cmd_set_pre_scan(hw);
4702                 } else {
4703                         struct mwl8k_vif *mwl8k_vif;
4704                         const u8 *bssid;
4705
4706                         /*
4707                          * Enable the BSS filter.
4708                          *
4709                          * If there is an active STA interface, use that
4710                          * interface's BSSID, otherwise use a dummy one
4711                          * (where the OUI part needs to be nonzero for
4712                          * the BSSID to be accepted by POST_SCAN).
4713                          */
4714                         mwl8k_vif = mwl8k_first_vif(priv);
4715                         if (mwl8k_vif != NULL)
4716                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4717                         else
4718                                 bssid = "\x01\x00\x00\x00\x00\x00";
4719
4720                         mwl8k_cmd_set_post_scan(hw, bssid);
4721                 }
4722         }
4723
4724         /*
4725          * If FIF_ALLMULTI is being requested, throw away the command
4726          * packet that ->prepare_multicast() built and replace it with
4727          * a command packet that enables reception of all multicast
4728          * packets.
4729          */
4730         if (*total_flags & FIF_ALLMULTI) {
4731                 kfree(cmd);
4732                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4733         }
4734
4735         if (cmd != NULL) {
4736                 mwl8k_post_cmd(hw, cmd);
4737                 kfree(cmd);
4738         }
4739
4740         mwl8k_fw_unlock(hw);
4741 }
4742
4743 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4744 {
4745         return mwl8k_cmd_set_rts_threshold(hw, value);
4746 }
4747
4748 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4749                             struct ieee80211_vif *vif,
4750                             struct ieee80211_sta *sta)
4751 {
4752         struct mwl8k_priv *priv = hw->priv;
4753
4754         if (priv->ap_fw)
4755                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4756         else
4757                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4758 }
4759
4760 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4761                          struct ieee80211_vif *vif,
4762                          struct ieee80211_sta *sta)
4763 {
4764         struct mwl8k_priv *priv = hw->priv;
4765         int ret;
4766         int i;
4767         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4768         struct ieee80211_key_conf *key;
4769
4770         if (!priv->ap_fw) {
4771                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4772                 if (ret >= 0) {
4773                         MWL8K_STA(sta)->peer_id = ret;
4774                         if (sta->ht_cap.ht_supported)
4775                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
4776                         ret = 0;
4777                 }
4778
4779         } else {
4780                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4781         }
4782
4783         for (i = 0; i < NUM_WEP_KEYS; i++) {
4784                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4785                 if (mwl8k_vif->wep_key_conf[i].enabled)
4786                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4787         }
4788         return ret;
4789 }
4790
4791 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4792                          const struct ieee80211_tx_queue_params *params)
4793 {
4794         struct mwl8k_priv *priv = hw->priv;
4795         int rc;
4796
4797         rc = mwl8k_fw_lock(hw);
4798         if (!rc) {
4799                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4800                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4801
4802                 if (!priv->wmm_enabled)
4803                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4804
4805                 if (!rc) {
4806                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4807                         rc = mwl8k_cmd_set_edca_params(hw, q,
4808                                                        params->cw_min,
4809                                                        params->cw_max,
4810                                                        params->aifs,
4811                                                        params->txop);
4812                 }
4813
4814                 mwl8k_fw_unlock(hw);
4815         }
4816
4817         return rc;
4818 }
4819
4820 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4821                            struct ieee80211_low_level_stats *stats)
4822 {
4823         return mwl8k_cmd_get_stat(hw, stats);
4824 }
4825
4826 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4827                                 struct survey_info *survey)
4828 {
4829         struct mwl8k_priv *priv = hw->priv;
4830         struct ieee80211_conf *conf = &hw->conf;
4831
4832         if (idx != 0)
4833                 return -ENOENT;
4834
4835         survey->channel = conf->channel;
4836         survey->filled = SURVEY_INFO_NOISE_DBM;
4837         survey->noise = priv->noise;
4838
4839         return 0;
4840 }
4841
4842 #define MAX_AMPDU_ATTEMPTS 5
4843
4844 static int
4845 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4846                    enum ieee80211_ampdu_mlme_action action,
4847                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4848                    u8 buf_size)
4849 {
4850
4851         int i, rc = 0;
4852         struct mwl8k_priv *priv = hw->priv;
4853         struct mwl8k_ampdu_stream *stream;
4854         u8 *addr = sta->addr;
4855
4856         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4857                 return -ENOTSUPP;
4858
4859         spin_lock(&priv->stream_lock);
4860         stream = mwl8k_lookup_stream(hw, addr, tid);
4861
4862         switch (action) {
4863         case IEEE80211_AMPDU_RX_START:
4864         case IEEE80211_AMPDU_RX_STOP:
4865                 break;
4866         case IEEE80211_AMPDU_TX_START:
4867                 /* By the time we get here the hw queues may contain outgoing
4868                  * packets for this RA/TID that are not part of this BA
4869                  * session.  The hw will assign sequence numbers to these
4870                  * packets as they go out.  So if we query the hw for its next
4871                  * sequence number and use that for the SSN here, it may end up
4872                  * being wrong, which will lead to sequence number mismatch at
4873                  * the recipient.  To avoid this, we reset the sequence number
4874                  * to O for the first MPDU in this BA stream.
4875                  */
4876                 *ssn = 0;
4877                 if (stream == NULL) {
4878                         /* This means that somebody outside this driver called
4879                          * ieee80211_start_tx_ba_session.  This is unexpected
4880                          * because we do our own rate control.  Just warn and
4881                          * move on.
4882                          */
4883                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
4884                                    "Proceeding anyway.\n", __func__);
4885                         stream = mwl8k_add_stream(hw, sta, tid);
4886                 }
4887                 if (stream == NULL) {
4888                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
4889                         rc = -EBUSY;
4890                         break;
4891                 }
4892                 stream->state = AMPDU_STREAM_IN_PROGRESS;
4893
4894                 /* Release the lock before we do the time consuming stuff */
4895                 spin_unlock(&priv->stream_lock);
4896                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
4897                         rc = mwl8k_check_ba(hw, stream);
4898
4899                         if (!rc)
4900                                 break;
4901                         /*
4902                          * HW queues take time to be flushed, give them
4903                          * sufficient time
4904                          */
4905
4906                         msleep(1000);
4907                 }
4908                 spin_lock(&priv->stream_lock);
4909                 if (rc) {
4910                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
4911                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
4912                         mwl8k_remove_stream(hw, stream);
4913                         rc = -EBUSY;
4914                         break;
4915                 }
4916                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
4917                 break;
4918         case IEEE80211_AMPDU_TX_STOP:
4919                 if (stream == NULL)
4920                         break;
4921                 if (stream->state == AMPDU_STREAM_ACTIVE) {
4922                         spin_unlock(&priv->stream_lock);
4923                         mwl8k_destroy_ba(hw, stream);
4924                         spin_lock(&priv->stream_lock);
4925                 }
4926                 mwl8k_remove_stream(hw, stream);
4927                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
4928                 break;
4929         case IEEE80211_AMPDU_TX_OPERATIONAL:
4930                 BUG_ON(stream == NULL);
4931                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
4932                 spin_unlock(&priv->stream_lock);
4933                 rc = mwl8k_create_ba(hw, stream, buf_size);
4934                 spin_lock(&priv->stream_lock);
4935                 if (!rc)
4936                         stream->state = AMPDU_STREAM_ACTIVE;
4937                 else {
4938                         spin_unlock(&priv->stream_lock);
4939                         mwl8k_destroy_ba(hw, stream);
4940                         spin_lock(&priv->stream_lock);
4941                         wiphy_debug(hw->wiphy,
4942                                 "Failed adding stream for sta %pM tid %d\n",
4943                                 addr, tid);
4944                         mwl8k_remove_stream(hw, stream);
4945                 }
4946                 break;
4947
4948         default:
4949                 rc = -ENOTSUPP;
4950         }
4951
4952         spin_unlock(&priv->stream_lock);
4953         return rc;
4954 }
4955
4956 static const struct ieee80211_ops mwl8k_ops = {
4957         .tx                     = mwl8k_tx,
4958         .start                  = mwl8k_start,
4959         .stop                   = mwl8k_stop,
4960         .add_interface          = mwl8k_add_interface,
4961         .remove_interface       = mwl8k_remove_interface,
4962         .config                 = mwl8k_config,
4963         .bss_info_changed       = mwl8k_bss_info_changed,
4964         .prepare_multicast      = mwl8k_prepare_multicast,
4965         .configure_filter       = mwl8k_configure_filter,
4966         .set_key                = mwl8k_set_key,
4967         .set_rts_threshold      = mwl8k_set_rts_threshold,
4968         .sta_add                = mwl8k_sta_add,
4969         .sta_remove             = mwl8k_sta_remove,
4970         .conf_tx                = mwl8k_conf_tx,
4971         .get_stats              = mwl8k_get_stats,
4972         .get_survey             = mwl8k_get_survey,
4973         .ampdu_action           = mwl8k_ampdu_action,
4974 };
4975
4976 static void mwl8k_finalize_join_worker(struct work_struct *work)
4977 {
4978         struct mwl8k_priv *priv =
4979                 container_of(work, struct mwl8k_priv, finalize_join_worker);
4980         struct sk_buff *skb = priv->beacon_skb;
4981         struct ieee80211_mgmt *mgmt = (void *)skb->data;
4982         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
4983         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
4984                                          mgmt->u.beacon.variable, len);
4985         int dtim_period = 1;
4986
4987         if (tim && tim[1] >= 2)
4988                 dtim_period = tim[3];
4989
4990         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
4991
4992         dev_kfree_skb(skb);
4993         priv->beacon_skb = NULL;
4994 }
4995
4996 enum {
4997         MWL8363 = 0,
4998         MWL8687,
4999         MWL8366,
5000 };
5001
5002 #define MWL8K_8366_AP_FW_API 2
5003 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5004 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5005
5006 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5007         [MWL8363] = {
5008                 .part_name      = "88w8363",
5009                 .helper_image   = "mwl8k/helper_8363.fw",
5010                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5011         },
5012         [MWL8687] = {
5013                 .part_name      = "88w8687",
5014                 .helper_image   = "mwl8k/helper_8687.fw",
5015                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5016         },
5017         [MWL8366] = {
5018                 .part_name      = "88w8366",
5019                 .helper_image   = "mwl8k/helper_8366.fw",
5020                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5021                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5022                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5023                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5024         },
5025 };
5026
5027 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5028 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5029 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5030 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5031 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5032 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5033 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5034
5035 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5036         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5037         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5038         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5039         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5040         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5041         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5042         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5043         { },
5044 };
5045 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5046
5047 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5048 {
5049         int rc;
5050         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5051                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5052                priv->fw_pref, priv->fw_alt);
5053         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5054         if (rc) {
5055                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5056                        pci_name(priv->pdev), priv->fw_alt);
5057                 return rc;
5058         }
5059         return 0;
5060 }
5061
5062 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5063 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5064 {
5065         struct mwl8k_priv *priv = context;
5066         struct mwl8k_device_info *di = priv->device_info;
5067         int rc;
5068
5069         switch (priv->fw_state) {
5070         case FW_STATE_INIT:
5071                 if (!fw) {
5072                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5073                                pci_name(priv->pdev), di->helper_image);
5074                         goto fail;
5075                 }
5076                 priv->fw_helper = fw;
5077                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5078                                       true);
5079                 if (rc && priv->fw_alt) {
5080                         rc = mwl8k_request_alt_fw(priv);
5081                         if (rc)
5082                                 goto fail;
5083                         priv->fw_state = FW_STATE_LOADING_ALT;
5084                 } else if (rc)
5085                         goto fail;
5086                 else
5087                         priv->fw_state = FW_STATE_LOADING_PREF;
5088                 break;
5089
5090         case FW_STATE_LOADING_PREF:
5091                 if (!fw) {
5092                         if (priv->fw_alt) {
5093                                 rc = mwl8k_request_alt_fw(priv);
5094                                 if (rc)
5095                                         goto fail;
5096                                 priv->fw_state = FW_STATE_LOADING_ALT;
5097                         } else
5098                                 goto fail;
5099                 } else {
5100                         priv->fw_ucode = fw;
5101                         rc = mwl8k_firmware_load_success(priv);
5102                         if (rc)
5103                                 goto fail;
5104                         else
5105                                 complete(&priv->firmware_loading_complete);
5106                 }
5107                 break;
5108
5109         case FW_STATE_LOADING_ALT:
5110                 if (!fw) {
5111                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5112                                pci_name(priv->pdev), di->helper_image);
5113                         goto fail;
5114                 }
5115                 priv->fw_ucode = fw;
5116                 rc = mwl8k_firmware_load_success(priv);
5117                 if (rc)
5118                         goto fail;
5119                 else
5120                         complete(&priv->firmware_loading_complete);
5121                 break;
5122
5123         default:
5124                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5125                        MWL8K_NAME, priv->fw_state);
5126                 BUG_ON(1);
5127         }
5128
5129         return;
5130
5131 fail:
5132         priv->fw_state = FW_STATE_ERROR;
5133         complete(&priv->firmware_loading_complete);
5134         device_release_driver(&priv->pdev->dev);
5135         mwl8k_release_firmware(priv);
5136 }
5137
5138 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5139                                bool nowait)
5140 {
5141         struct mwl8k_priv *priv = hw->priv;
5142         int rc;
5143
5144         /* Reset firmware and hardware */
5145         mwl8k_hw_reset(priv);
5146
5147         /* Ask userland hotplug daemon for the device firmware */
5148         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5149         if (rc) {
5150                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5151                 return rc;
5152         }
5153
5154         if (nowait)
5155                 return rc;
5156
5157         /* Load firmware into hardware */
5158         rc = mwl8k_load_firmware(hw);
5159         if (rc)
5160                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5161
5162         /* Reclaim memory once firmware is successfully loaded */
5163         mwl8k_release_firmware(priv);
5164
5165         return rc;
5166 }
5167
5168 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5169 {
5170         struct mwl8k_priv *priv = hw->priv;
5171         int rc = 0;
5172         int i;
5173
5174         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5175                 rc = mwl8k_txq_init(hw, i);
5176                 if (rc)
5177                         break;
5178                 if (priv->ap_fw)
5179                         iowrite32(priv->txq[i].txd_dma,
5180                                   priv->sram + priv->txq_offset[i]);
5181         }
5182         return rc;
5183 }
5184
5185 /* initialize hw after successfully loading a firmware image */
5186 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5187 {
5188         struct mwl8k_priv *priv = hw->priv;
5189         int rc = 0;
5190         int i;
5191
5192         if (priv->ap_fw) {
5193                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5194                 if (priv->rxd_ops == NULL) {
5195                         wiphy_err(hw->wiphy,
5196                                   "Driver does not have AP firmware image support for this hardware\n");
5197                         goto err_stop_firmware;
5198                 }
5199         } else {
5200                 priv->rxd_ops = &rxd_sta_ops;
5201         }
5202
5203         priv->sniffer_enabled = false;
5204         priv->wmm_enabled = false;
5205         priv->pending_tx_pkts = 0;
5206
5207         rc = mwl8k_rxq_init(hw, 0);
5208         if (rc)
5209                 goto err_stop_firmware;
5210         rxq_refill(hw, 0, INT_MAX);
5211
5212         /* For the sta firmware, we need to know the dma addresses of tx queues
5213          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5214          * prior to issuing this command.  But for the AP case, we learn the
5215          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5216          * case we must initialize the tx queues after.
5217          */
5218         priv->num_ampdu_queues = 0;
5219         if (!priv->ap_fw) {
5220                 rc = mwl8k_init_txqs(hw);
5221                 if (rc)
5222                         goto err_free_queues;
5223         }
5224
5225         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5226         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5227         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5228                   MWL8K_A2H_INT_BA_WATCHDOG,
5229                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5230         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5231
5232         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5233                          IRQF_SHARED, MWL8K_NAME, hw);
5234         if (rc) {
5235                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5236                 goto err_free_queues;
5237         }
5238
5239         memset(priv->ampdu, 0, sizeof(priv->ampdu));
5240
5241         /*
5242          * Temporarily enable interrupts.  Initial firmware host
5243          * commands use interrupts and avoid polling.  Disable
5244          * interrupts when done.
5245          */
5246         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5247
5248         /* Get config data, mac addrs etc */
5249         if (priv->ap_fw) {
5250                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5251                 if (!rc)
5252                         rc = mwl8k_init_txqs(hw);
5253                 if (!rc)
5254                         rc = mwl8k_cmd_set_hw_spec(hw);
5255         } else {
5256                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5257         }
5258         if (rc) {
5259                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5260                 goto err_free_irq;
5261         }
5262
5263         /* Turn radio off */
5264         rc = mwl8k_cmd_radio_disable(hw);
5265         if (rc) {
5266                 wiphy_err(hw->wiphy, "Cannot disable\n");
5267                 goto err_free_irq;
5268         }
5269
5270         /* Clear MAC address */
5271         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5272         if (rc) {
5273                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5274                 goto err_free_irq;
5275         }
5276
5277         /* Disable interrupts */
5278         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5279         free_irq(priv->pdev->irq, hw);
5280
5281         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5282                    priv->device_info->part_name,
5283                    priv->hw_rev, hw->wiphy->perm_addr,
5284                    priv->ap_fw ? "AP" : "STA",
5285                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5286                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5287
5288         return 0;
5289
5290 err_free_irq:
5291         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5292         free_irq(priv->pdev->irq, hw);
5293
5294 err_free_queues:
5295         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5296                 mwl8k_txq_deinit(hw, i);
5297         mwl8k_rxq_deinit(hw, 0);
5298
5299 err_stop_firmware:
5300         mwl8k_hw_reset(priv);
5301
5302         return rc;
5303 }
5304
5305 /*
5306  * invoke mwl8k_reload_firmware to change the firmware image after the device
5307  * has already been registered
5308  */
5309 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5310 {
5311         int i, rc = 0;
5312         struct mwl8k_priv *priv = hw->priv;
5313
5314         mwl8k_stop(hw);
5315         mwl8k_rxq_deinit(hw, 0);
5316
5317         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5318                 mwl8k_txq_deinit(hw, i);
5319
5320         rc = mwl8k_init_firmware(hw, fw_image, false);
5321         if (rc)
5322                 goto fail;
5323
5324         rc = mwl8k_probe_hw(hw);
5325         if (rc)
5326                 goto fail;
5327
5328         rc = mwl8k_start(hw);
5329         if (rc)
5330                 goto fail;
5331
5332         rc = mwl8k_config(hw, ~0);
5333         if (rc)
5334                 goto fail;
5335
5336         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5337                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5338                 if (rc)
5339                         goto fail;
5340         }
5341
5342         return rc;
5343
5344 fail:
5345         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5346         return rc;
5347 }
5348
5349 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5350 {
5351         struct ieee80211_hw *hw = priv->hw;
5352         int i, rc;
5353
5354         rc = mwl8k_load_firmware(hw);
5355         mwl8k_release_firmware(priv);
5356         if (rc) {
5357                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5358                 return rc;
5359         }
5360
5361         /*
5362          * Extra headroom is the size of the required DMA header
5363          * minus the size of the smallest 802.11 frame (CTS frame).
5364          */
5365         hw->extra_tx_headroom =
5366                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5367
5368         hw->channel_change_time = 10;
5369
5370         hw->queues = MWL8K_TX_WMM_QUEUES;
5371
5372         /* Set rssi values to dBm */
5373         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5374         hw->vif_data_size = sizeof(struct mwl8k_vif);
5375         hw->sta_data_size = sizeof(struct mwl8k_sta);
5376
5377         priv->macids_used = 0;
5378         INIT_LIST_HEAD(&priv->vif_list);
5379
5380         /* Set default radio state and preamble */
5381         priv->radio_on = 0;
5382         priv->radio_short_preamble = 0;
5383
5384         /* Finalize join worker */
5385         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5386         /* Handle watchdog ba events */
5387         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5388
5389         /* TX reclaim and RX tasklets.  */
5390         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5391         tasklet_disable(&priv->poll_tx_task);
5392         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5393         tasklet_disable(&priv->poll_rx_task);
5394
5395         /* Power management cookie */
5396         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5397         if (priv->cookie == NULL)
5398                 return -ENOMEM;
5399
5400         mutex_init(&priv->fw_mutex);
5401         priv->fw_mutex_owner = NULL;
5402         priv->fw_mutex_depth = 0;
5403         priv->hostcmd_wait = NULL;
5404
5405         spin_lock_init(&priv->tx_lock);
5406
5407         spin_lock_init(&priv->stream_lock);
5408
5409         priv->tx_wait = NULL;
5410
5411         rc = mwl8k_probe_hw(hw);
5412         if (rc)
5413                 goto err_free_cookie;
5414
5415         hw->wiphy->interface_modes = 0;
5416         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5417                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5418         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5419                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5420
5421         rc = ieee80211_register_hw(hw);
5422         if (rc) {
5423                 wiphy_err(hw->wiphy, "Cannot register device\n");
5424                 goto err_unprobe_hw;
5425         }
5426
5427         return 0;
5428
5429 err_unprobe_hw:
5430         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5431                 mwl8k_txq_deinit(hw, i);
5432         mwl8k_rxq_deinit(hw, 0);
5433
5434 err_free_cookie:
5435         if (priv->cookie != NULL)
5436                 pci_free_consistent(priv->pdev, 4,
5437                                 priv->cookie, priv->cookie_dma);
5438
5439         return rc;
5440 }
5441 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5442                                  const struct pci_device_id *id)
5443 {
5444         static int printed_version;
5445         struct ieee80211_hw *hw;
5446         struct mwl8k_priv *priv;
5447         struct mwl8k_device_info *di;
5448         int rc;
5449
5450         if (!printed_version) {
5451                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5452                 printed_version = 1;
5453         }
5454
5455
5456         rc = pci_enable_device(pdev);
5457         if (rc) {
5458                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5459                        MWL8K_NAME);
5460                 return rc;
5461         }
5462
5463         rc = pci_request_regions(pdev, MWL8K_NAME);
5464         if (rc) {
5465                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5466                        MWL8K_NAME);
5467                 goto err_disable_device;
5468         }
5469
5470         pci_set_master(pdev);
5471
5472
5473         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5474         if (hw == NULL) {
5475                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5476                 rc = -ENOMEM;
5477                 goto err_free_reg;
5478         }
5479
5480         SET_IEEE80211_DEV(hw, &pdev->dev);
5481         pci_set_drvdata(pdev, hw);
5482
5483         priv = hw->priv;
5484         priv->hw = hw;
5485         priv->pdev = pdev;
5486         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5487
5488
5489         priv->sram = pci_iomap(pdev, 0, 0x10000);
5490         if (priv->sram == NULL) {
5491                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5492                 goto err_iounmap;
5493         }
5494
5495         /*
5496          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5497          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5498          */
5499         priv->regs = pci_iomap(pdev, 1, 0x10000);
5500         if (priv->regs == NULL) {
5501                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5502                 if (priv->regs == NULL) {
5503                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5504                         goto err_iounmap;
5505                 }
5506         }
5507
5508         /*
5509          * Choose the initial fw image depending on user input.  If a second
5510          * image is available, make it the alternative image that will be
5511          * loaded if the first one fails.
5512          */
5513         init_completion(&priv->firmware_loading_complete);
5514         di = priv->device_info;
5515         if (ap_mode_default && di->fw_image_ap) {
5516                 priv->fw_pref = di->fw_image_ap;
5517                 priv->fw_alt = di->fw_image_sta;
5518         } else if (!ap_mode_default && di->fw_image_sta) {
5519                 priv->fw_pref = di->fw_image_sta;
5520                 priv->fw_alt = di->fw_image_ap;
5521         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5522                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5523                 priv->fw_pref = di->fw_image_sta;
5524         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5525                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5526                 priv->fw_pref = di->fw_image_ap;
5527         }
5528         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5529         if (rc)
5530                 goto err_stop_firmware;
5531         return rc;
5532
5533 err_stop_firmware:
5534         mwl8k_hw_reset(priv);
5535
5536 err_iounmap:
5537         if (priv->regs != NULL)
5538                 pci_iounmap(pdev, priv->regs);
5539
5540         if (priv->sram != NULL)
5541                 pci_iounmap(pdev, priv->sram);
5542
5543         pci_set_drvdata(pdev, NULL);
5544         ieee80211_free_hw(hw);
5545
5546 err_free_reg:
5547         pci_release_regions(pdev);
5548
5549 err_disable_device:
5550         pci_disable_device(pdev);
5551
5552         return rc;
5553 }
5554
5555 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5556 {
5557         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5558 }
5559
5560 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5561 {
5562         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5563         struct mwl8k_priv *priv;
5564         int i;
5565
5566         if (hw == NULL)
5567                 return;
5568         priv = hw->priv;
5569
5570         wait_for_completion(&priv->firmware_loading_complete);
5571
5572         if (priv->fw_state == FW_STATE_ERROR) {
5573                 mwl8k_hw_reset(priv);
5574                 goto unmap;
5575         }
5576
5577         ieee80211_stop_queues(hw);
5578
5579         ieee80211_unregister_hw(hw);
5580
5581         /* Remove TX reclaim and RX tasklets.  */
5582         tasklet_kill(&priv->poll_tx_task);
5583         tasklet_kill(&priv->poll_rx_task);
5584
5585         /* Stop hardware */
5586         mwl8k_hw_reset(priv);
5587
5588         /* Return all skbs to mac80211 */
5589         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5590                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5591
5592         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5593                 mwl8k_txq_deinit(hw, i);
5594
5595         mwl8k_rxq_deinit(hw, 0);
5596
5597         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5598
5599 unmap:
5600         pci_iounmap(pdev, priv->regs);
5601         pci_iounmap(pdev, priv->sram);
5602         pci_set_drvdata(pdev, NULL);
5603         ieee80211_free_hw(hw);
5604         pci_release_regions(pdev);
5605         pci_disable_device(pdev);
5606 }
5607
5608 static struct pci_driver mwl8k_driver = {
5609         .name           = MWL8K_NAME,
5610         .id_table       = mwl8k_pci_id_table,
5611         .probe          = mwl8k_probe,
5612         .remove         = __devexit_p(mwl8k_remove),
5613         .shutdown       = __devexit_p(mwl8k_shutdown),
5614 };
5615
5616 static int __init mwl8k_init(void)
5617 {
5618         return pci_register_driver(&mwl8k_driver);
5619 }
5620
5621 static void __exit mwl8k_exit(void)
5622 {
5623         pci_unregister_driver(&mwl8k_driver);
5624 }
5625
5626 module_init(mwl8k_init);
5627 module_exit(mwl8k_exit);
5628
5629 MODULE_DESCRIPTION(MWL8K_DESC);
5630 MODULE_VERSION(MWL8K_VERSION);
5631 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5632 MODULE_LICENSE("GPL");