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         int irq;
 161
 162         struct mwl8k_device_info *device_info;
 163
 164         void __iomem *sram;
 165         void __iomem *regs;
 166
 167         /* firmware */
 168         const struct firmware *fw_helper;
 169         const struct firmware *fw_ucode;
 170
 171         /* hardware/firmware parameters */
 172         bool ap_fw;
 173         struct rxd_ops *rxd_ops;
 174         struct ieee80211_supported_band band_24;
 175         struct ieee80211_channel channels_24[14];
 176         struct ieee80211_rate rates_24[14];
 177         struct ieee80211_supported_band band_50;
 178         struct ieee80211_channel channels_50[4];
 179         struct ieee80211_rate rates_50[9];
 180         u32 ap_macids_supported;
 181         u32 sta_macids_supported;
 182
 183         /* Ampdu stream information */
 184         u8 num_ampdu_queues;
 185         spinlock_t stream_lock;
 186         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 187         struct work_struct watchdog_ba_handle;
 188
 189         /* firmware access */
 190         struct mutex fw_mutex;
 191         struct task_struct *fw_mutex_owner;
 192         int fw_mutex_depth;
 193         struct completion *hostcmd_wait;
 194
 195         /* lock held over TX and TX reap */
 196         spinlock_t tx_lock;
 197
 198         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 199         struct completion *tx_wait;
 200
 201         /* List of interfaces.  */
 202         u32 macids_used;
 203         struct list_head vif_list;
 204
 205         /* power management status cookie from firmware */
 206         u32 *cookie;
 207         dma_addr_t cookie_dma;
 208
 209         u16 num_mcaddrs;
 210         u8 hw_rev;
 211         u32 fw_rev;
 212
 213         /*
 214          * Running count of TX packets in flight, to avoid
 215          * iterating over the transmit rings each time.
 216          */
 217         int pending_tx_pkts;
 218
 219         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 220         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 221         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 222
 223         bool radio_on;
 224         bool radio_short_preamble;
 225         bool sniffer_enabled;
 226         bool wmm_enabled;
 227
 228         /* XXX need to convert this to handle multiple interfaces */
 229         bool capture_beacon;
 230         u8 capture_bssid[ETH_ALEN];
 231         struct sk_buff *beacon_skb;
 232
 233         /*
 234          * This FJ worker has to be global as it is scheduled from the
 235          * RX handler.  At this point we don't know which interface it
 236          * belongs to until the list of bssids waiting to complete join
 237          * is checked.
 238          */
 239         struct work_struct finalize_join_worker;
 240
 241         /* Tasklet to perform TX reclaim.  */
 242         struct tasklet_struct poll_tx_task;
 243
 244         /* Tasklet to perform RX.  */
 245         struct tasklet_struct poll_rx_task;
 246
 247         /* Most recently reported noise in dBm */
 248         s8 noise;
 249
 250         /*
 251          * preserve the queue configurations so they can be restored if/when
 252          * the firmware image is swapped.
 253          */
 254         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 255
 256         /* async firmware loading state */
 257         unsigned fw_state;
 258         char *fw_pref;
 259         char *fw_alt;
 260         struct completion firmware_loading_complete;
 261 };
 262
 263 #define MAX_WEP_KEY_LEN         13
 264 #define NUM_WEP_KEYS            4
 265
 266 /* Per interface specific private data */
 267 struct mwl8k_vif {
 268         struct list_head list;
 269         struct ieee80211_vif *vif;
 270
 271         /* Firmware macid for this vif.  */
 272         int macid;
 273
 274         /* Non AMPDU sequence number assigned by driver.  */
 275         u16 seqno;
 276
 277         /* Saved WEP keys */
 278         struct {
 279                 u8 enabled;
 280                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 281         } wep_key_conf[NUM_WEP_KEYS];
 282
 283         /* BSSID */
 284         u8 bssid[ETH_ALEN];
 285
 286         /* A flag to indicate is HW crypto is enabled for this bssid */
 287         bool is_hw_crypto_enabled;
 288 };
 289 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 290 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 291
 292 struct tx_traffic_info {
 293         u32 start_time;
 294         u32 pkts;
 295 };
 296
 297 #define MWL8K_MAX_TID 8
 298 struct mwl8k_sta {
 299         /* Index into station database. Returned by UPDATE_STADB.  */
 300         u8 peer_id;
 301         u8 is_ampdu_allowed;
 302         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 303 };
 304 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 305
 306 static const struct ieee80211_channel mwl8k_channels_24[] = {
 307         { .center_freq = 2412, .hw_value = 1, },
 308         { .center_freq = 2417, .hw_value = 2, },
 309         { .center_freq = 2422, .hw_value = 3, },
 310         { .center_freq = 2427, .hw_value = 4, },
 311         { .center_freq = 2432, .hw_value = 5, },
 312         { .center_freq = 2437, .hw_value = 6, },
 313         { .center_freq = 2442, .hw_value = 7, },
 314         { .center_freq = 2447, .hw_value = 8, },
 315         { .center_freq = 2452, .hw_value = 9, },
 316         { .center_freq = 2457, .hw_value = 10, },
 317         { .center_freq = 2462, .hw_value = 11, },
 318         { .center_freq = 2467, .hw_value = 12, },
 319         { .center_freq = 2472, .hw_value = 13, },
 320         { .center_freq = 2484, .hw_value = 14, },
 321 };
 322
 323 static const struct ieee80211_rate mwl8k_rates_24[] = {
 324         { .bitrate = 10, .hw_value = 2, },
 325         { .bitrate = 20, .hw_value = 4, },
 326         { .bitrate = 55, .hw_value = 11, },
 327         { .bitrate = 110, .hw_value = 22, },
 328         { .bitrate = 220, .hw_value = 44, },
 329         { .bitrate = 60, .hw_value = 12, },
 330         { .bitrate = 90, .hw_value = 18, },
 331         { .bitrate = 120, .hw_value = 24, },
 332         { .bitrate = 180, .hw_value = 36, },
 333         { .bitrate = 240, .hw_value = 48, },
 334         { .bitrate = 360, .hw_value = 72, },
 335         { .bitrate = 480, .hw_value = 96, },
 336         { .bitrate = 540, .hw_value = 108, },
 337         { .bitrate = 720, .hw_value = 144, },
 338 };
 339
 340 static const struct ieee80211_channel mwl8k_channels_50[] = {
 341         { .center_freq = 5180, .hw_value = 36, },
 342         { .center_freq = 5200, .hw_value = 40, },
 343         { .center_freq = 5220, .hw_value = 44, },
 344         { .center_freq = 5240, .hw_value = 48, },
 345 };
 346
 347 static const struct ieee80211_rate mwl8k_rates_50[] = {
 348         { .bitrate = 60, .hw_value = 12, },
 349         { .bitrate = 90, .hw_value = 18, },
 350         { .bitrate = 120, .hw_value = 24, },
 351         { .bitrate = 180, .hw_value = 36, },
 352         { .bitrate = 240, .hw_value = 48, },
 353         { .bitrate = 360, .hw_value = 72, },
 354         { .bitrate = 480, .hw_value = 96, },
 355         { .bitrate = 540, .hw_value = 108, },
 356         { .bitrate = 720, .hw_value = 144, },
 357 };
 358
 359 /* Set or get info from Firmware */
 360 #define MWL8K_CMD_GET                   0x0000
 361 #define MWL8K_CMD_SET                   0x0001
 362 #define MWL8K_CMD_SET_LIST              0x0002
 363
 364 /* Firmware command codes */
 365 #define MWL8K_CMD_CODE_DNLD             0x0001
 366 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 367 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 368 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 369 #define MWL8K_CMD_GET_STAT              0x0014
 370 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 371 #define MWL8K_CMD_RF_TX_POWER           0x001e
 372 #define MWL8K_CMD_TX_POWER              0x001f
 373 #define MWL8K_CMD_RF_ANTENNA            0x0020
 374 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 375 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 376 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 377 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 378 #define MWL8K_CMD_SET_AID               0x010d
 379 #define MWL8K_CMD_SET_RATE              0x0110
 380 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 381 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 382 #define MWL8K_CMD_SET_SLOT              0x0114
 383 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 384 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 385 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 386 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 387 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 388 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 389 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 390 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 391 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 392 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 393 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 394 #define MWL8K_CMD_UPDATE_STADB          0x1123
 395 #define MWL8K_CMD_BASTREAM              0x1125
 396
 397 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 398 {
 399         u16 command = le16_to_cpu(cmd);
 400
 401 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 402                                         snprintf(buf, bufsize, "%s", #x);\
 403                                         return buf;\
 404                                         } while (0)
 405         switch (command & ~0x8000) {
 406                 MWL8K_CMDNAME(CODE_DNLD);
 407                 MWL8K_CMDNAME(GET_HW_SPEC);
 408                 MWL8K_CMDNAME(SET_HW_SPEC);
 409                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 410                 MWL8K_CMDNAME(GET_STAT);
 411                 MWL8K_CMDNAME(RADIO_CONTROL);
 412                 MWL8K_CMDNAME(RF_TX_POWER);
 413                 MWL8K_CMDNAME(TX_POWER);
 414                 MWL8K_CMDNAME(RF_ANTENNA);
 415                 MWL8K_CMDNAME(SET_BEACON);
 416                 MWL8K_CMDNAME(SET_PRE_SCAN);
 417                 MWL8K_CMDNAME(SET_POST_SCAN);
 418                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 419                 MWL8K_CMDNAME(SET_AID);
 420                 MWL8K_CMDNAME(SET_RATE);
 421                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 422                 MWL8K_CMDNAME(RTS_THRESHOLD);
 423                 MWL8K_CMDNAME(SET_SLOT);
 424                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 425                 MWL8K_CMDNAME(SET_WMM_MODE);
 426                 MWL8K_CMDNAME(MIMO_CONFIG);
 427                 MWL8K_CMDNAME(USE_FIXED_RATE);
 428                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 429                 MWL8K_CMDNAME(SET_MAC_ADDR);
 430                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 431                 MWL8K_CMDNAME(BSS_START);
 432                 MWL8K_CMDNAME(SET_NEW_STN);
 433                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 434                 MWL8K_CMDNAME(UPDATE_STADB);
 435                 MWL8K_CMDNAME(BASTREAM);
 436                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 437         default:
 438                 snprintf(buf, bufsize, "0x%x", cmd);
 439         }
 440 #undef MWL8K_CMDNAME
 441
 442         return buf;
 443 }
 444
 445 /* Hardware and firmware reset */
 446 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 447 {
 448         iowrite32(MWL8K_H2A_INT_RESET,
 449                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 450         iowrite32(MWL8K_H2A_INT_RESET,
 451                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 452         msleep(20);
 453 }
 454
 455 /* Release fw image */
 456 static void mwl8k_release_fw(const struct firmware **fw)
 457 {
 458         if (*fw == NULL)
 459                 return;
 460         release_firmware(*fw);
 461         *fw = NULL;
 462 }
 463
 464 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 465 {
 466         mwl8k_release_fw(&priv->fw_ucode);
 467         mwl8k_release_fw(&priv->fw_helper);
 468 }
 469
 470 /* states for asynchronous f/w loading */
 471 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 472 enum {
 473         FW_STATE_INIT = 0,
 474         FW_STATE_LOADING_PREF,
 475         FW_STATE_LOADING_ALT,
 476         FW_STATE_ERROR,
 477 };
 478
 479 /* Request fw image */
 480 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 481                             const char *fname, const struct firmware **fw,
 482                             bool nowait)
 483 {
 484         /* release current image */
 485         if (*fw != NULL)
 486                 mwl8k_release_fw(fw);
 487
 488         if (nowait)
 489                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 490                                                &priv->pdev->dev, GFP_KERNEL,
 491                                                priv, mwl8k_fw_state_machine);
 492         else
 493                 return request_firmware(fw, fname, &priv->pdev->dev);
 494 }
 495
 496 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 497                                   bool nowait)
 498 {
 499         struct mwl8k_device_info *di = priv->device_info;
 500         int rc;
 501
 502         if (di->helper_image != NULL) {
 503                 if (nowait)
 504                         rc = mwl8k_request_fw(priv, di->helper_image,
 505                                               &priv->fw_helper, true);
 506                 else
 507                         rc = mwl8k_request_fw(priv, di->helper_image,
 508                                               &priv->fw_helper, false);
 509                 if (rc)
 510                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 511                                pci_name(priv->pdev), di->helper_image);
 512
 513                 if (rc || nowait)
 514                         return rc;
 515         }
 516
 517         if (nowait) {
 518                 /*
 519                  * if we get here, no helper image is needed.  Skip the
 520                  * FW_STATE_INIT state.
 521                  */
 522                 priv->fw_state = FW_STATE_LOADING_PREF;
 523                 rc = mwl8k_request_fw(priv, fw_image,
 524                                       &priv->fw_ucode,
 525                                       true);
 526         } else
 527                 rc = mwl8k_request_fw(priv, fw_image,
 528                                       &priv->fw_ucode, false);
 529         if (rc) {
 530                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 531                        pci_name(priv->pdev), fw_image);
 532                 mwl8k_release_fw(&priv->fw_helper);
 533                 return rc;
 534         }
 535
 536         return 0;
 537 }
 538
 539 struct mwl8k_cmd_pkt {
 540         __le16  code;
 541         __le16  length;
 542         __u8    seq_num;
 543         __u8    macid;
 544         __le16  result;
 545         char    payload[0];
 546 } __packed;
 547
 548 /*
 549  * Firmware loading.
 550  */
 551 static int
 552 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 553 {
 554         void __iomem *regs = priv->regs;
 555         dma_addr_t dma_addr;
 556         int loops;
 557
 558         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 559         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 560                 return -ENOMEM;
 561
 562         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 563         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 564         iowrite32(MWL8K_H2A_INT_DOORBELL,
 565                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 566         iowrite32(MWL8K_H2A_INT_DUMMY,
 567                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 568
 569         loops = 1000;
 570         do {
 571                 u32 int_code;
 572
 573                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 574                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 575                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 576                         break;
 577                 }
 578
 579                 cond_resched();
 580                 udelay(1);
 581         } while (--loops);
 582
 583         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 584
 585         return loops ? 0 : -ETIMEDOUT;
 586 }
 587
 588 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 589                                 const u8 *data, size_t length)
 590 {
 591         struct mwl8k_cmd_pkt *cmd;
 592         int done;
 593         int rc = 0;
 594
 595         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 596         if (cmd == NULL)
 597                 return -ENOMEM;
 598
 599         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 600         cmd->seq_num = 0;
 601         cmd->macid = 0;
 602         cmd->result = 0;
 603
 604         done = 0;
 605         while (length) {
 606                 int block_size = length > 256 ? 256 : length;
 607
 608                 memcpy(cmd->payload, data + done, block_size);
 609                 cmd->length = cpu_to_le16(block_size);
 610
 611                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 612                                                 sizeof(*cmd) + block_size);
 613                 if (rc)
 614                         break;
 615
 616                 done += block_size;
 617                 length -= block_size;
 618         }
 619
 620         if (!rc) {
 621                 cmd->length = 0;
 622                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 623         }
 624
 625         kfree(cmd);
 626
 627         return rc;
 628 }
 629
 630 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 631                                 const u8 *data, size_t length)
 632 {
 633         unsigned char *buffer;
 634         int may_continue, rc = 0;
 635         u32 done, prev_block_size;
 636
 637         buffer = kmalloc(1024, GFP_KERNEL);
 638         if (buffer == NULL)
 639                 return -ENOMEM;
 640
 641         done = 0;
 642         prev_block_size = 0;
 643         may_continue = 1000;
 644         while (may_continue > 0) {
 645                 u32 block_size;
 646
 647                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 648                 if (block_size & 1) {
 649                         block_size &= ~1;
 650                         may_continue--;
 651                 } else {
 652                         done += prev_block_size;
 653                         length -= prev_block_size;
 654                 }
 655
 656                 if (block_size > 1024 || block_size > length) {
 657                         rc = -EOVERFLOW;
 658                         break;
 659                 }
 660
 661                 if (length == 0) {
 662                         rc = 0;
 663                         break;
 664                 }
 665
 666                 if (block_size == 0) {
 667                         rc = -EPROTO;
 668                         may_continue--;
 669                         udelay(1);
 670                         continue;
 671                 }
 672
 673                 prev_block_size = block_size;
 674                 memcpy(buffer, data + done, block_size);
 675
 676                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 677                 if (rc)
 678                         break;
 679         }
 680
 681         if (!rc && length != 0)
 682                 rc = -EREMOTEIO;
 683
 684         kfree(buffer);
 685
 686         return rc;
 687 }
 688
 689 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 690 {
 691         struct mwl8k_priv *priv = hw->priv;
 692         const struct firmware *fw = priv->fw_ucode;
 693         int rc;
 694         int loops;
 695
 696         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 697                 const struct firmware *helper = priv->fw_helper;
 698
 699                 if (helper == NULL) {
 700                         printk(KERN_ERR "%s: helper image needed but none "
 701                                "given\n", pci_name(priv->pdev));
 702                         return -EINVAL;
 703                 }
 704
 705                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 706                 if (rc) {
 707                         printk(KERN_ERR "%s: unable to load firmware "
 708                                "helper image\n", pci_name(priv->pdev));
 709                         return rc;
 710                 }
 711                 msleep(20);
 712
 713                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 714         } else {
 715                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 716         }
 717
 718         if (rc) {
 719                 printk(KERN_ERR "%s: unable to load firmware image\n",
 720                        pci_name(priv->pdev));
 721                 return rc;
 722         }
 723
 724         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 725
 726         loops = 500000;
 727         do {
 728                 u32 ready_code;
 729
 730                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 731                 if (ready_code == MWL8K_FWAP_READY) {
 732                         priv->ap_fw = 1;
 733                         break;
 734                 } else if (ready_code == MWL8K_FWSTA_READY) {
 735                         priv->ap_fw = 0;
 736                         break;
 737                 }
 738
 739                 cond_resched();
 740                 udelay(1);
 741         } while (--loops);
 742
 743         return loops ? 0 : -ETIMEDOUT;
 744 }
 745
 746
 747 /* DMA header used by firmware and hardware.  */
 748 struct mwl8k_dma_data {
 749         __le16 fwlen;
 750         struct ieee80211_hdr wh;
 751         char data[0];
 752 } __packed;
 753
 754 /* Routines to add/remove DMA header from skb.  */
 755 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 756 {
 757         struct mwl8k_dma_data *tr;
 758         int hdrlen;
 759
 760         tr = (struct mwl8k_dma_data *)skb->data;
 761         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 762
 763         if (hdrlen != sizeof(tr->wh)) {
 764                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 765                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 766                         *((__le16 *)(tr->data - 2)) = qos;
 767                 } else {
 768                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 769                 }
 770         }
 771
 772         if (hdrlen != sizeof(*tr))
 773                 skb_pull(skb, sizeof(*tr) - hdrlen);
 774 }
 775
 776 static void
 777 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
 778 {
 779         struct ieee80211_hdr *wh;
 780         int hdrlen;
 781         int reqd_hdrlen;
 782         struct mwl8k_dma_data *tr;
 783
 784         /*
 785          * Add a firmware DMA header; the firmware requires that we
 786          * present a 2-byte payload length followed by a 4-address
 787          * header (without QoS field), followed (optionally) by any
 788          * WEP/ExtIV header (but only filled in for CCMP).
 789          */
 790         wh = (struct ieee80211_hdr *)skb->data;
 791
 792         hdrlen = ieee80211_hdrlen(wh->frame_control);
 793         reqd_hdrlen = sizeof(*tr);
 794
 795         if (hdrlen != reqd_hdrlen)
 796                 skb_push(skb, reqd_hdrlen - hdrlen);
 797
 798         if (ieee80211_is_data_qos(wh->frame_control))
 799                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 800
 801         tr = (struct mwl8k_dma_data *)skb->data;
 802         if (wh != &tr->wh)
 803                 memmove(&tr->wh, wh, hdrlen);
 804         if (hdrlen != sizeof(tr->wh))
 805                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 806
 807         /*
 808          * Firmware length is the length of the fully formed "802.11
 809          * payload".  That is, everything except for the 802.11 header.
 810          * This includes all crypto material including the MIC.
 811          */
 812         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 813 }
 814
 815 static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
 816 {
 817         struct ieee80211_hdr *wh;
 818         struct ieee80211_tx_info *tx_info;
 819         struct ieee80211_key_conf *key_conf;
 820         int data_pad;
 821
 822         wh = (struct ieee80211_hdr *)skb->data;
 823
 824         tx_info = IEEE80211_SKB_CB(skb);
 825
 826         key_conf = NULL;
 827         if (ieee80211_is_data(wh->frame_control))
 828                 key_conf = tx_info->control.hw_key;
 829
 830         /*
 831          * Make sure the packet header is in the DMA header format (4-address
 832          * without QoS), the necessary crypto padding between the header and the
 833          * payload has already been provided by mac80211, but it doesn't add
 834          * tail padding when HW crypto is enabled.
 835          *
 836          * We have the following trailer padding requirements:
 837          * - WEP: 4 trailer bytes (ICV)
 838          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 839          * - CCMP: 8 trailer bytes (MIC)
 840          */
 841         data_pad = 0;
 842         if (key_conf != NULL) {
 843                 switch (key_conf->cipher) {
 844                 case WLAN_CIPHER_SUITE_WEP40:
 845                 case WLAN_CIPHER_SUITE_WEP104:
 846                         data_pad = 4;
 847                         break;
 848                 case WLAN_CIPHER_SUITE_TKIP:
 849                         data_pad = 12;
 850                         break;
 851                 case WLAN_CIPHER_SUITE_CCMP:
 852                         data_pad = 8;
 853                         break;
 854                 }
 855         }
 856         mwl8k_add_dma_header(skb, data_pad);
 857 }
 858
 859 /*
 860  * Packet reception for 88w8366 AP firmware.
 861  */
 862 struct mwl8k_rxd_8366_ap {
 863         __le16 pkt_len;
 864         __u8 sq2;
 865         __u8 rate;
 866         __le32 pkt_phys_addr;
 867         __le32 next_rxd_phys_addr;
 868         __le16 qos_control;
 869         __le16 htsig2;
 870         __le32 hw_rssi_info;
 871         __le32 hw_noise_floor_info;
 872         __u8 noise_floor;
 873         __u8 pad0[3];
 874         __u8 rssi;
 875         __u8 rx_status;
 876         __u8 channel;
 877         __u8 rx_ctrl;
 878 } __packed;
 879
 880 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 881 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 882 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 883
 884 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 885
 886 /* 8366 AP rx_status bits */
 887 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 888 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 889 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 890 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 891 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 892
 893 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 894 {
 895         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 896
 897         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 898         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 899 }
 900
 901 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 902 {
 903         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 904
 905         rxd->pkt_len = cpu_to_le16(len);
 906         rxd->pkt_phys_addr = cpu_to_le32(addr);
 907         wmb();
 908         rxd->rx_ctrl = 0;
 909 }
 910
 911 static int
 912 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 913                           __le16 *qos, s8 *noise)
 914 {
 915         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 916
 917         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 918                 return -1;
 919         rmb();
 920
 921         memset(status, 0, sizeof(*status));
 922
 923         status->signal = -rxd->rssi;
 924         *noise = -rxd->noise_floor;
 925
 926         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 927                 status->flag |= RX_FLAG_HT;
 928                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 929                         status->flag |= RX_FLAG_40MHZ;
 930                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 931         } else {
 932                 int i;
 933
 934                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 935                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 936                                 status->rate_idx = i;
 937                                 break;
 938                         }
 939                 }
 940         }
 941
 942         if (rxd->channel > 14) {
 943                 status->band = IEEE80211_BAND_5GHZ;
 944                 if (!(status->flag & RX_FLAG_HT))
 945                         status->rate_idx -= 5;
 946         } else {
 947                 status->band = IEEE80211_BAND_2GHZ;
 948         }
 949         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 950                                                       status->band);
 951
 952         *qos = rxd->qos_control;
 953
 954         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 955             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 956             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 957                 status->flag |= RX_FLAG_MMIC_ERROR;
 958
 959         return le16_to_cpu(rxd->pkt_len);
 960 }
 961
 962 static struct rxd_ops rxd_8366_ap_ops = {
 963         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 964         .rxd_init       = mwl8k_rxd_8366_ap_init,
 965         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 966         .rxd_process    = mwl8k_rxd_8366_ap_process,
 967 };
 968
 969 /*
 970  * Packet reception for STA firmware.
 971  */
 972 struct mwl8k_rxd_sta {
 973         __le16 pkt_len;
 974         __u8 link_quality;
 975         __u8 noise_level;
 976         __le32 pkt_phys_addr;
 977         __le32 next_rxd_phys_addr;
 978         __le16 qos_control;
 979         __le16 rate_info;
 980         __le32 pad0[4];
 981         __u8 rssi;
 982         __u8 channel;
 983         __le16 pad1;
 984         __u8 rx_ctrl;
 985         __u8 rx_status;
 986         __u8 pad2[2];
 987 } __packed;
 988
 989 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 990 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 991 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 992 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 993 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 994 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 995
 996 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 997 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
 998 /* ICV=0 or MIC=1 */
 999 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1000 /* Key is uploaded only in failure case */
1001 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1002
1003 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1004 {
1005         struct mwl8k_rxd_sta *rxd = _rxd;
1006
1007         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1008         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1009 }
1010
1011 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1012 {
1013         struct mwl8k_rxd_sta *rxd = _rxd;
1014
1015         rxd->pkt_len = cpu_to_le16(len);
1016         rxd->pkt_phys_addr = cpu_to_le32(addr);
1017         wmb();
1018         rxd->rx_ctrl = 0;
1019 }
1020
1021 static int
1022 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1023                        __le16 *qos, s8 *noise)
1024 {
1025         struct mwl8k_rxd_sta *rxd = _rxd;
1026         u16 rate_info;
1027
1028         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1029                 return -1;
1030         rmb();
1031
1032         rate_info = le16_to_cpu(rxd->rate_info);
1033
1034         memset(status, 0, sizeof(*status));
1035
1036         status->signal = -rxd->rssi;
1037         *noise = -rxd->noise_level;
1038         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1039         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1040
1041         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1042                 status->flag |= RX_FLAG_SHORTPRE;
1043         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1044                 status->flag |= RX_FLAG_40MHZ;
1045         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1046                 status->flag |= RX_FLAG_SHORT_GI;
1047         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1048                 status->flag |= RX_FLAG_HT;
1049
1050         if (rxd->channel > 14) {
1051                 status->band = IEEE80211_BAND_5GHZ;
1052                 if (!(status->flag & RX_FLAG_HT))
1053                         status->rate_idx -= 5;
1054         } else {
1055                 status->band = IEEE80211_BAND_2GHZ;
1056         }
1057         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1058                                                       status->band);
1059
1060         *qos = rxd->qos_control;
1061         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1062             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1063                 status->flag |= RX_FLAG_MMIC_ERROR;
1064
1065         return le16_to_cpu(rxd->pkt_len);
1066 }
1067
1068 static struct rxd_ops rxd_sta_ops = {
1069         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1070         .rxd_init       = mwl8k_rxd_sta_init,
1071         .rxd_refill     = mwl8k_rxd_sta_refill,
1072         .rxd_process    = mwl8k_rxd_sta_process,
1073 };
1074
1075
1076 #define MWL8K_RX_DESCS          256
1077 #define MWL8K_RX_MAXSZ          3800
1078
1079 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1080 {
1081         struct mwl8k_priv *priv = hw->priv;
1082         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1083         int size;
1084         int i;
1085
1086         rxq->rxd_count = 0;
1087         rxq->head = 0;
1088         rxq->tail = 0;
1089
1090         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1091
1092         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1093         if (rxq->rxd == NULL) {
1094                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1095                 return -ENOMEM;
1096         }
1097         memset(rxq->rxd, 0, size);
1098
1099         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1100         if (rxq->buf == NULL) {
1101                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1102                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1103                 return -ENOMEM;
1104         }
1105
1106         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1107                 int desc_size;
1108                 void *rxd;
1109                 int nexti;
1110                 dma_addr_t next_dma_addr;
1111
1112                 desc_size = priv->rxd_ops->rxd_size;
1113                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1114
1115                 nexti = i + 1;
1116                 if (nexti == MWL8K_RX_DESCS)
1117                         nexti = 0;
1118                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1119
1120                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1121         }
1122
1123         return 0;
1124 }
1125
1126 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1127 {
1128         struct mwl8k_priv *priv = hw->priv;
1129         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1130         int refilled;
1131
1132         refilled = 0;
1133         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1134                 struct sk_buff *skb;
1135                 dma_addr_t addr;
1136                 int rx;
1137                 void *rxd;
1138
1139                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1140                 if (skb == NULL)
1141                         break;
1142
1143                 addr = pci_map_single(priv->pdev, skb->data,
1144                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1145
1146                 rxq->rxd_count++;
1147                 rx = rxq->tail++;
1148                 if (rxq->tail == MWL8K_RX_DESCS)
1149                         rxq->tail = 0;
1150                 rxq->buf[rx].skb = skb;
1151                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1152
1153                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1154                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1155
1156                 refilled++;
1157         }
1158
1159         return refilled;
1160 }
1161
1162 /* Must be called only when the card's reception is completely halted */
1163 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1164 {
1165         struct mwl8k_priv *priv = hw->priv;
1166         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1167         int i;
1168
1169         if (rxq->rxd == NULL)
1170                 return;
1171
1172         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1173                 if (rxq->buf[i].skb != NULL) {
1174                         pci_unmap_single(priv->pdev,
1175                                          dma_unmap_addr(&rxq->buf[i], dma),
1176                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1177                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1178
1179                         kfree_skb(rxq->buf[i].skb);
1180                         rxq->buf[i].skb = NULL;
1181                 }
1182         }
1183
1184         kfree(rxq->buf);
1185         rxq->buf = NULL;
1186
1187         pci_free_consistent(priv->pdev,
1188                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1189                             rxq->rxd, rxq->rxd_dma);
1190         rxq->rxd = NULL;
1191 }
1192
1193
1194 /*
1195  * Scan a list of BSSIDs to process for finalize join.
1196  * Allows for extension to process multiple BSSIDs.
1197  */
1198 static inline int
1199 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1200 {
1201         return priv->capture_beacon &&
1202                 ieee80211_is_beacon(wh->frame_control) &&
1203                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1204 }
1205
1206 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1207                                      struct sk_buff *skb)
1208 {
1209         struct mwl8k_priv *priv = hw->priv;
1210
1211         priv->capture_beacon = false;
1212         memset(priv->capture_bssid, 0, ETH_ALEN);
1213
1214         /*
1215          * Use GFP_ATOMIC as rxq_process is called from
1216          * the primary interrupt handler, memory allocation call
1217          * must not sleep.
1218          */
1219         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1220         if (priv->beacon_skb != NULL)
1221                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1222 }
1223
1224 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1225                                                    u8 *bssid)
1226 {
1227         struct mwl8k_vif *mwl8k_vif;
1228
1229         list_for_each_entry(mwl8k_vif,
1230                             vif_list, list) {
1231                 if (memcmp(bssid, mwl8k_vif->bssid,
1232                            ETH_ALEN) == 0)
1233                         return mwl8k_vif;
1234         }
1235
1236         return NULL;
1237 }
1238
1239 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1240 {
1241         struct mwl8k_priv *priv = hw->priv;
1242         struct mwl8k_vif *mwl8k_vif = NULL;
1243         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1244         int processed;
1245
1246         processed = 0;
1247         while (rxq->rxd_count && limit--) {
1248                 struct sk_buff *skb;
1249                 void *rxd;
1250                 int pkt_len;
1251                 struct ieee80211_rx_status status;
1252                 struct ieee80211_hdr *wh;
1253                 __le16 qos;
1254
1255                 skb = rxq->buf[rxq->head].skb;
1256                 if (skb == NULL)
1257                         break;
1258
1259                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1260
1261                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1262                                                         &priv->noise);
1263                 if (pkt_len < 0)
1264                         break;
1265
1266                 rxq->buf[rxq->head].skb = NULL;
1267
1268                 pci_unmap_single(priv->pdev,
1269                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1270                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1271                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1272
1273                 rxq->head++;
1274                 if (rxq->head == MWL8K_RX_DESCS)
1275                         rxq->head = 0;
1276
1277                 rxq->rxd_count--;
1278
1279                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1280
1281                 /*
1282                  * Check for a pending join operation.  Save a
1283                  * copy of the beacon and schedule a tasklet to
1284                  * send a FINALIZE_JOIN command to the firmware.
1285                  */
1286                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1287                         mwl8k_save_beacon(hw, skb);
1288
1289                 if (ieee80211_has_protected(wh->frame_control)) {
1290
1291                         /* Check if hw crypto has been enabled for
1292                          * this bss. If yes, set the status flags
1293                          * accordingly
1294                          */
1295                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1296                                                                 wh->addr1);
1297
1298                         if (mwl8k_vif != NULL &&
1299                             mwl8k_vif->is_hw_crypto_enabled == true) {
1300                                 /*
1301                                  * When MMIC ERROR is encountered
1302                                  * by the firmware, payload is
1303                                  * dropped and only 32 bytes of
1304                                  * mwl8k Firmware header is sent
1305                                  * to the host.
1306                                  *
1307                                  * We need to add four bytes of
1308                                  * key information.  In it
1309                                  * MAC80211 expects keyidx set to
1310                                  * 0 for triggering Counter
1311                                  * Measure of MMIC failure.
1312                                  */
1313                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1314                                         struct mwl8k_dma_data *tr;
1315                                         tr = (struct mwl8k_dma_data *)skb->data;
1316                                         memset((void *)&(tr->data), 0, 4);
1317                                         pkt_len += 4;
1318                                 }
1319
1320                                 if (!ieee80211_is_auth(wh->frame_control))
1321                                         status.flag |= RX_FLAG_IV_STRIPPED |
1322                                                        RX_FLAG_DECRYPTED |
1323                                                        RX_FLAG_MMIC_STRIPPED;
1324                         }
1325                 }
1326
1327                 skb_put(skb, pkt_len);
1328                 mwl8k_remove_dma_header(skb, qos);
1329                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1330                 ieee80211_rx_irqsafe(hw, skb);
1331
1332                 processed++;
1333         }
1334
1335         return processed;
1336 }
1337
1338
1339 /*
1340  * Packet transmission.
1341  */
1342
1343 #define MWL8K_TXD_STATUS_OK                     0x00000001
1344 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1345 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1346 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1347 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1348
1349 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1350 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1351 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1352 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1353 #define MWL8K_QOS_EOSP                          0x0010
1354
1355 struct mwl8k_tx_desc {
1356         __le32 status;
1357         __u8 data_rate;
1358         __u8 tx_priority;
1359         __le16 qos_control;
1360         __le32 pkt_phys_addr;
1361         __le16 pkt_len;
1362         __u8 dest_MAC_addr[ETH_ALEN];
1363         __le32 next_txd_phys_addr;
1364         __le32 timestamp;
1365         __le16 rate_info;
1366         __u8 peer_id;
1367         __u8 tx_frag_cnt;
1368 } __packed;
1369
1370 #define MWL8K_TX_DESCS          128
1371
1372 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1373 {
1374         struct mwl8k_priv *priv = hw->priv;
1375         struct mwl8k_tx_queue *txq = priv->txq + index;
1376         int size;
1377         int i;
1378
1379         txq->len = 0;
1380         txq->head = 0;
1381         txq->tail = 0;
1382
1383         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1384
1385         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1386         if (txq->txd == NULL) {
1387                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1388                 return -ENOMEM;
1389         }
1390         memset(txq->txd, 0, size);
1391
1392         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1393         if (txq->skb == NULL) {
1394                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1395                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1396                 return -ENOMEM;
1397         }
1398
1399         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1400                 struct mwl8k_tx_desc *tx_desc;
1401                 int nexti;
1402
1403                 tx_desc = txq->txd + i;
1404                 nexti = (i + 1) % MWL8K_TX_DESCS;
1405
1406                 tx_desc->status = 0;
1407                 tx_desc->next_txd_phys_addr =
1408                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1409         }
1410
1411         return 0;
1412 }
1413
1414 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1415 {
1416         iowrite32(MWL8K_H2A_INT_PPA_READY,
1417                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1418         iowrite32(MWL8K_H2A_INT_DUMMY,
1419                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1420         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1421 }
1422
1423 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1424 {
1425         struct mwl8k_priv *priv = hw->priv;
1426         int i;
1427
1428         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1429                 struct mwl8k_tx_queue *txq = priv->txq + i;
1430                 int fw_owned = 0;
1431                 int drv_owned = 0;
1432                 int unused = 0;
1433                 int desc;
1434
1435                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1436                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1437                         u32 status;
1438
1439                         status = le32_to_cpu(tx_desc->status);
1440                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1441                                 fw_owned++;
1442                         else
1443                                 drv_owned++;
1444
1445                         if (tx_desc->pkt_len == 0)
1446                                 unused++;
1447                 }
1448
1449                 wiphy_err(hw->wiphy,
1450                           "txq[%d] len=%d head=%d tail=%d "
1451                           "fw_owned=%d drv_owned=%d unused=%d\n",
1452                           i,
1453                           txq->len, txq->head, txq->tail,
1454                           fw_owned, drv_owned, unused);
1455         }
1456 }
1457
1458 /*
1459  * Must be called with priv->fw_mutex held and tx queues stopped.
1460  */
1461 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1462
1463 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1464 {
1465         struct mwl8k_priv *priv = hw->priv;
1466         DECLARE_COMPLETION_ONSTACK(tx_wait);
1467         int retry;
1468         int rc;
1469
1470         might_sleep();
1471
1472         /*
1473          * The TX queues are stopped at this point, so this test
1474          * doesn't need to take ->tx_lock.
1475          */
1476         if (!priv->pending_tx_pkts)
1477                 return 0;
1478
1479         retry = 0;
1480         rc = 0;
1481
1482         spin_lock_bh(&priv->tx_lock);
1483         priv->tx_wait = &tx_wait;
1484         while (!rc) {
1485                 int oldcount;
1486                 unsigned long timeout;
1487
1488                 oldcount = priv->pending_tx_pkts;
1489
1490                 spin_unlock_bh(&priv->tx_lock);
1491                 timeout = wait_for_completion_timeout(&tx_wait,
1492                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1493                 spin_lock_bh(&priv->tx_lock);
1494
1495                 if (timeout) {
1496                         WARN_ON(priv->pending_tx_pkts);
1497                         if (retry)
1498                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1499                         break;
1500                 }
1501
1502                 if (priv->pending_tx_pkts < oldcount) {
1503                         wiphy_notice(hw->wiphy,
1504                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1505                                      oldcount, priv->pending_tx_pkts);
1506                         retry = 1;
1507                         continue;
1508                 }
1509
1510                 priv->tx_wait = NULL;
1511
1512                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1513                           MWL8K_TX_WAIT_TIMEOUT_MS);
1514                 mwl8k_dump_tx_rings(hw);
1515
1516                 rc = -ETIMEDOUT;
1517         }
1518         spin_unlock_bh(&priv->tx_lock);
1519
1520         return rc;
1521 }
1522
1523 #define MWL8K_TXD_SUCCESS(status)                               \
1524         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1525                      MWL8K_TXD_STATUS_OK_RETRY |                \
1526                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1527
1528 static int mwl8k_tid_queue_mapping(u8 tid)
1529 {
1530         BUG_ON(tid > 7);
1531
1532         switch (tid) {
1533         case 0:
1534         case 3:
1535                 return IEEE80211_AC_BE;
1536                 break;
1537         case 1:
1538         case 2:
1539                 return IEEE80211_AC_BK;
1540                 break;
1541         case 4:
1542         case 5:
1543                 return IEEE80211_AC_VI;
1544                 break;
1545         case 6:
1546         case 7:
1547                 return IEEE80211_AC_VO;
1548                 break;
1549         default:
1550                 return -1;
1551                 break;
1552         }
1553 }
1554
1555 /* The firmware will fill in the rate information
1556  * for each packet that gets queued in the hardware
1557  * in this structure
1558  */
1559
1560 struct rateinfo {
1561         __le16  format:1;
1562         __le16  short_gi:1;
1563         __le16  band_width:1;
1564         __le16  rate_id_mcs:6;
1565         __le16  adv_coding:2;
1566         __le16  antenna:2;
1567         __le16  act_sub_chan:2;
1568         __le16  preamble_type:1;
1569         __le16  power_id:4;
1570         __le16  antenna2:1;
1571         __le16  reserved:1;
1572         __le16  tx_bf_frame:1;
1573         __le16  green_field:1;
1574 } __packed;
1575
1576 static int
1577 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1578 {
1579         struct mwl8k_priv *priv = hw->priv;
1580         struct mwl8k_tx_queue *txq = priv->txq + index;
1581         int processed;
1582
1583         processed = 0;
1584         while (txq->len > 0 && limit--) {
1585                 int tx;
1586                 struct mwl8k_tx_desc *tx_desc;
1587                 unsigned long addr;
1588                 int size;
1589                 struct sk_buff *skb;
1590                 struct ieee80211_tx_info *info;
1591                 u32 status;
1592                 struct ieee80211_sta *sta;
1593                 struct mwl8k_sta *sta_info = NULL;
1594                 u16 rate_info;
1595                 struct rateinfo *rate;
1596                 struct ieee80211_hdr *wh;
1597
1598                 tx = txq->head;
1599                 tx_desc = txq->txd + tx;
1600
1601                 status = le32_to_cpu(tx_desc->status);
1602
1603                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1604                         if (!force)
1605                                 break;
1606                         tx_desc->status &=
1607                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1608                 }
1609
1610                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1611                 BUG_ON(txq->len == 0);
1612                 txq->len--;
1613                 priv->pending_tx_pkts--;
1614
1615                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1616                 size = le16_to_cpu(tx_desc->pkt_len);
1617                 skb = txq->skb[tx];
1618                 txq->skb[tx] = NULL;
1619
1620                 BUG_ON(skb == NULL);
1621                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1622
1623                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1624
1625                 wh = (struct ieee80211_hdr *) skb->data;
1626
1627                 /* Mark descriptor as unused */
1628                 tx_desc->pkt_phys_addr = 0;
1629                 tx_desc->pkt_len = 0;
1630
1631                 info = IEEE80211_SKB_CB(skb);
1632                 if (ieee80211_is_data(wh->frame_control)) {
1633                         sta = info->control.sta;
1634                         if (sta) {
1635                                 sta_info = MWL8K_STA(sta);
1636                                 BUG_ON(sta_info == NULL);
1637                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1638                                 rate = (struct rateinfo *)&rate_info;
1639                                 /* If rate is < 6.5 Mpbs for an ht station
1640                                  * do not form an ampdu. If the station is a
1641                                  * legacy station (format = 0), do not form an
1642                                  * ampdu
1643                                  */
1644                                 if (rate->rate_id_mcs < 1 ||
1645                                     rate->format == 0) {
1646                                         sta_info->is_ampdu_allowed = false;
1647                                 } else {
1648                                         sta_info->is_ampdu_allowed = true;
1649                                 }
1650                         }
1651                 }
1652
1653                 ieee80211_tx_info_clear_status(info);
1654
1655                 /* Rate control is happening in the firmware.
1656                  * Ensure no tx rate is being reported.
1657                  */
1658                 info->status.rates[0].idx = -1;
1659                 info->status.rates[0].count = 1;
1660
1661                 if (MWL8K_TXD_SUCCESS(status))
1662                         info->flags |= IEEE80211_TX_STAT_ACK;
1663
1664                 ieee80211_tx_status_irqsafe(hw, skb);
1665
1666                 processed++;
1667         }
1668
1669         if (index < MWL8K_TX_WMM_QUEUES && processed && priv->radio_on &&
1670             !mutex_is_locked(&priv->fw_mutex))
1671                 ieee80211_wake_queue(hw, index);
1672
1673         return processed;
1674 }
1675
1676 /* must be called only when the card's transmit is completely halted */
1677 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1678 {
1679         struct mwl8k_priv *priv = hw->priv;
1680         struct mwl8k_tx_queue *txq = priv->txq + index;
1681
1682         if (txq->txd == NULL)
1683                 return;
1684
1685         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1686
1687         kfree(txq->skb);
1688         txq->skb = NULL;
1689
1690         pci_free_consistent(priv->pdev,
1691                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1692                             txq->txd, txq->txd_dma);
1693         txq->txd = NULL;
1694 }
1695
1696 /* caller must hold priv->stream_lock when calling the stream functions */
1697 static struct mwl8k_ampdu_stream *
1698 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1699 {
1700         struct mwl8k_ampdu_stream *stream;
1701         struct mwl8k_priv *priv = hw->priv;
1702         int i;
1703
1704         for (i = 0; i < priv->num_ampdu_queues; i++) {
1705                 stream = &priv->ampdu[i];
1706                 if (stream->state == AMPDU_NO_STREAM) {
1707                         stream->sta = sta;
1708                         stream->state = AMPDU_STREAM_NEW;
1709                         stream->tid = tid;
1710                         stream->idx = i;
1711                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1712                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1713                                     sta->addr, tid);
1714                         return stream;
1715                 }
1716         }
1717         return NULL;
1718 }
1719
1720 static int
1721 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1722 {
1723         int ret;
1724
1725         /* if the stream has already been started, don't start it again */
1726         if (stream->state != AMPDU_STREAM_NEW)
1727                 return 0;
1728         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1729         if (ret)
1730                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1731                             "%d\n", stream->sta->addr, stream->tid, ret);
1732         else
1733                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1734                             stream->sta->addr, stream->tid);
1735         return ret;
1736 }
1737
1738 static void
1739 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1740 {
1741         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1742                     stream->tid);
1743         memset(stream, 0, sizeof(*stream));
1744 }
1745
1746 static struct mwl8k_ampdu_stream *
1747 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1748 {
1749         struct mwl8k_priv *priv = hw->priv;
1750         int i;
1751
1752         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1753                 struct mwl8k_ampdu_stream *stream;
1754                 stream = &priv->ampdu[i];
1755                 if (stream->state == AMPDU_NO_STREAM)
1756                         continue;
1757                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1758                     stream->tid == tid)
1759                         return stream;
1760         }
1761         return NULL;
1762 }
1763
1764 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1765 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1766 {
1767         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1768         struct tx_traffic_info *tx_stats;
1769
1770         BUG_ON(tid >= MWL8K_MAX_TID);
1771         tx_stats = &sta_info->tx_stats[tid];
1772
1773         return sta_info->is_ampdu_allowed &&
1774                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1775 }
1776
1777 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1778 {
1779         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1780         struct tx_traffic_info *tx_stats;
1781
1782         BUG_ON(tid >= MWL8K_MAX_TID);
1783         tx_stats = &sta_info->tx_stats[tid];
1784
1785         if (tx_stats->start_time == 0)
1786                 tx_stats->start_time = jiffies;
1787
1788         /* reset the packet count after each second elapses.  If the number of
1789          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1790          * an ampdu stream to be started.
1791          */
1792         if (jiffies - tx_stats->start_time > HZ) {
1793                 tx_stats->pkts = 0;
1794                 tx_stats->start_time = 0;
1795         } else
1796                 tx_stats->pkts++;
1797 }
1798
1799 static void
1800 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1801 {
1802         struct mwl8k_priv *priv = hw->priv;
1803         struct ieee80211_tx_info *tx_info;
1804         struct mwl8k_vif *mwl8k_vif;
1805         struct ieee80211_sta *sta;
1806         struct ieee80211_hdr *wh;
1807         struct mwl8k_tx_queue *txq;
1808         struct mwl8k_tx_desc *tx;
1809         dma_addr_t dma;
1810         u32 txstatus;
1811         u8 txdatarate;
1812         u16 qos;
1813         int txpriority;
1814         u8 tid = 0;
1815         struct mwl8k_ampdu_stream *stream = NULL;
1816         bool start_ba_session = false;
1817         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1818
1819         wh = (struct ieee80211_hdr *)skb->data;
1820         if (ieee80211_is_data_qos(wh->frame_control))
1821                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1822         else
1823                 qos = 0;
1824
1825         if (priv->ap_fw)
1826                 mwl8k_encapsulate_tx_frame(skb);
1827         else
1828                 mwl8k_add_dma_header(skb, 0);
1829
1830         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1831
1832         tx_info = IEEE80211_SKB_CB(skb);
1833         sta = tx_info->control.sta;
1834         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1835
1836         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1837                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1838                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1839                 mwl8k_vif->seqno += 0x10;
1840         }
1841
1842         /* Setup firmware control bit fields for each frame type.  */
1843         txstatus = 0;
1844         txdatarate = 0;
1845         if (ieee80211_is_mgmt(wh->frame_control) ||
1846             ieee80211_is_ctl(wh->frame_control)) {
1847                 txdatarate = 0;
1848                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1849         } else if (ieee80211_is_data(wh->frame_control)) {
1850                 txdatarate = 1;
1851                 if (is_multicast_ether_addr(wh->addr1))
1852                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1853
1854                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1855                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1856                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1857                 else
1858                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1859         }
1860
1861         /* Queue ADDBA request in the respective data queue.  While setting up
1862          * the ampdu stream, mac80211 queues further packets for that
1863          * particular ra/tid pair.  However, packets piled up in the hardware
1864          * for that ra/tid pair will still go out. ADDBA request and the
1865          * related data packets going out from different queues asynchronously
1866          * will cause a shift in the receiver window which might result in
1867          * ampdu packets getting dropped at the receiver after the stream has
1868          * been setup.
1869          */
1870         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1871             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1872             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1873             priv->ap_fw)) {
1874                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1875                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1876                 index = mwl8k_tid_queue_mapping(tid);
1877         }
1878
1879         txpriority = index;
1880
1881         if (ieee80211_is_data_qos(wh->frame_control) &&
1882             skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1883             sta->ht_cap.ht_supported && priv->ap_fw) {
1884                 tid = qos & 0xf;
1885                 mwl8k_tx_count_packet(sta, tid);
1886                 spin_lock(&priv->stream_lock);
1887                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1888                 if (stream != NULL) {
1889                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1890                                 txpriority = stream->txq_idx;
1891                                 index = stream->txq_idx;
1892                         } else if (stream->state == AMPDU_STREAM_NEW) {
1893                                 /* We get here if the driver sends us packets
1894                                  * after we've initiated a stream, but before
1895                                  * our ampdu_action routine has been called
1896                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1897                                  * for the ADDBA request.  So this packet can
1898                                  * go out with no risk of sequence number
1899                                  * mismatch.  No special handling is required.
1900                                  */
1901                         } else {
1902                                 /* Drop packets that would go out after the
1903                                  * ADDBA request was sent but before the ADDBA
1904                                  * response is received.  If we don't do this,
1905                                  * the recipient would probably receive it
1906                                  * after the ADDBA request with SSN 0.  This
1907                                  * will cause the recipient's BA receive window
1908                                  * to shift, which would cause the subsequent
1909                                  * packets in the BA stream to be discarded.
1910                                  * mac80211 queues our packets for us in this
1911                                  * case, so this is really just a safety check.
1912                                  */
1913                                 wiphy_warn(hw->wiphy,
1914                                            "Cannot send packet while ADDBA "
1915                                            "dialog is underway.\n");
1916                                 spin_unlock(&priv->stream_lock);
1917                                 dev_kfree_skb(skb);
1918                                 return;
1919                         }
1920                 } else {
1921                         /* Defer calling mwl8k_start_stream so that the current
1922                          * skb can go out before the ADDBA request.  This
1923                          * prevents sequence number mismatch at the recepient
1924                          * as described above.
1925                          */
1926                         if (mwl8k_ampdu_allowed(sta, tid)) {
1927                                 stream = mwl8k_add_stream(hw, sta, tid);
1928                                 if (stream != NULL)
1929                                         start_ba_session = true;
1930                         }
1931                 }
1932                 spin_unlock(&priv->stream_lock);
1933         }
1934
1935         dma = pci_map_single(priv->pdev, skb->data,
1936                                 skb->len, PCI_DMA_TODEVICE);
1937
1938         if (pci_dma_mapping_error(priv->pdev, dma)) {
1939                 wiphy_debug(hw->wiphy,
1940                             "failed to dma map skb, dropping TX frame.\n");
1941                 if (start_ba_session) {
1942                         spin_lock(&priv->stream_lock);
1943                         mwl8k_remove_stream(hw, stream);
1944                         spin_unlock(&priv->stream_lock);
1945                 }
1946                 dev_kfree_skb(skb);
1947                 return;
1948         }
1949
1950         spin_lock_bh(&priv->tx_lock);
1951
1952         txq = priv->txq + index;
1953
1954         if (index >= MWL8K_TX_WMM_QUEUES && txq->len >= MWL8K_TX_DESCS) {
1955                 /* This is the case in which the tx packet is destined for an
1956                  * AMPDU queue and that AMPDU queue is full.  Because we don't
1957                  * start and stop the AMPDU queues, we must drop these packets.
1958                  */
1959                 dev_kfree_skb(skb);
1960                 spin_unlock_bh(&priv->tx_lock);
1961                 return;
1962         }
1963
1964         BUG_ON(txq->skb[txq->tail] != NULL);
1965         txq->skb[txq->tail] = skb;
1966
1967         tx = txq->txd + txq->tail;
1968         tx->data_rate = txdatarate;
1969         tx->tx_priority = txpriority;
1970         tx->qos_control = cpu_to_le16(qos);
1971         tx->pkt_phys_addr = cpu_to_le32(dma);
1972         tx->pkt_len = cpu_to_le16(skb->len);
1973         tx->rate_info = 0;
1974         if (!priv->ap_fw && tx_info->control.sta != NULL)
1975                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1976         else
1977                 tx->peer_id = 0;
1978         wmb();
1979         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1980
1981         txq->len++;
1982         priv->pending_tx_pkts++;
1983
1984         txq->tail++;
1985         if (txq->tail == MWL8K_TX_DESCS)
1986                 txq->tail = 0;
1987
1988         if (txq->head == txq->tail && index < MWL8K_TX_WMM_QUEUES)
1989                 ieee80211_stop_queue(hw, index);
1990
1991         mwl8k_tx_start(priv);
1992
1993         spin_unlock_bh(&priv->tx_lock);
1994
1995         /* Initiate the ampdu session here */
1996         if (start_ba_session) {
1997                 spin_lock(&priv->stream_lock);
1998                 if (mwl8k_start_stream(hw, stream))
1999                         mwl8k_remove_stream(hw, stream);
2000                 spin_unlock(&priv->stream_lock);
2001         }
2002 }
2003
2004
2005 /*
2006  * Firmware access.
2007  *
2008  * We have the following requirements for issuing firmware commands:
2009  * - Some commands require that the packet transmit path is idle when
2010  *   the command is issued.  (For simplicity, we'll just quiesce the
2011  *   transmit path for every command.)
2012  * - There are certain sequences of commands that need to be issued to
2013  *   the hardware sequentially, with no other intervening commands.
2014  *
2015  * This leads to an implementation of a "firmware lock" as a mutex that
2016  * can be taken recursively, and which is taken by both the low-level
2017  * command submission function (mwl8k_post_cmd) as well as any users of
2018  * that function that require issuing of an atomic sequence of commands,
2019  * and quiesces the transmit path whenever it's taken.
2020  */
2021 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2022 {
2023         struct mwl8k_priv *priv = hw->priv;
2024
2025         if (priv->fw_mutex_owner != current) {
2026                 int rc;
2027
2028                 mutex_lock(&priv->fw_mutex);
2029                 ieee80211_stop_queues(hw);
2030
2031                 rc = mwl8k_tx_wait_empty(hw);
2032                 if (rc) {
2033                         ieee80211_wake_queues(hw);
2034                         mutex_unlock(&priv->fw_mutex);
2035
2036                         return rc;
2037                 }
2038
2039                 priv->fw_mutex_owner = current;
2040         }
2041
2042         priv->fw_mutex_depth++;
2043
2044         return 0;
2045 }
2046
2047 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2048 {
2049         struct mwl8k_priv *priv = hw->priv;
2050
2051         if (!--priv->fw_mutex_depth) {
2052                 ieee80211_wake_queues(hw);
2053                 priv->fw_mutex_owner = NULL;
2054                 mutex_unlock(&priv->fw_mutex);
2055         }
2056 }
2057
2058
2059 /*
2060  * Command processing.
2061  */
2062
2063 /* Timeout firmware commands after 10s */
2064 #define MWL8K_CMD_TIMEOUT_MS    10000
2065
2066 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2067 {
2068         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2069         struct mwl8k_priv *priv = hw->priv;
2070         void __iomem *regs = priv->regs;
2071         dma_addr_t dma_addr;
2072         unsigned int dma_size;
2073         int rc;
2074         unsigned long timeout = 0;
2075         u8 buf[32];
2076
2077         cmd->result = (__force __le16) 0xffff;
2078         dma_size = le16_to_cpu(cmd->length);
2079         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2080                                   PCI_DMA_BIDIRECTIONAL);
2081         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2082                 return -ENOMEM;
2083
2084         rc = mwl8k_fw_lock(hw);
2085         if (rc) {
2086                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2087                                                 PCI_DMA_BIDIRECTIONAL);
2088                 return rc;
2089         }
2090
2091         priv->hostcmd_wait = &cmd_wait;
2092         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2093         iowrite32(MWL8K_H2A_INT_DOORBELL,
2094                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2095         iowrite32(MWL8K_H2A_INT_DUMMY,
2096                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2097
2098         timeout = wait_for_completion_timeout(&cmd_wait,
2099                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2100
2101         priv->hostcmd_wait = NULL;
2102
2103         mwl8k_fw_unlock(hw);
2104
2105         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2106                                         PCI_DMA_BIDIRECTIONAL);
2107
2108         if (!timeout) {
2109                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2110                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2111                           MWL8K_CMD_TIMEOUT_MS);
2112                 rc = -ETIMEDOUT;
2113         } else {
2114                 int ms;
2115
2116                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2117
2118                 rc = cmd->result ? -EINVAL : 0;
2119                 if (rc)
2120                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2121                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2122                                   le16_to_cpu(cmd->result));
2123                 else if (ms > 2000)
2124                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2125                                      mwl8k_cmd_name(cmd->code,
2126                                                     buf, sizeof(buf)),
2127                                      ms);
2128         }
2129
2130         return rc;
2131 }
2132
2133 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2134                                  struct ieee80211_vif *vif,
2135                                  struct mwl8k_cmd_pkt *cmd)
2136 {
2137         if (vif != NULL)
2138                 cmd->macid = MWL8K_VIF(vif)->macid;
2139         return mwl8k_post_cmd(hw, cmd);
2140 }
2141
2142 /*
2143  * Setup code shared between STA and AP firmware images.
2144  */
2145 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2146 {
2147         struct mwl8k_priv *priv = hw->priv;
2148
2149         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2150         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2151
2152         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2153         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2154
2155         priv->band_24.band = IEEE80211_BAND_2GHZ;
2156         priv->band_24.channels = priv->channels_24;
2157         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2158         priv->band_24.bitrates = priv->rates_24;
2159         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2160
2161         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2162 }
2163
2164 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2165 {
2166         struct mwl8k_priv *priv = hw->priv;
2167
2168         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2169         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2170
2171         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2172         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2173
2174         priv->band_50.band = IEEE80211_BAND_5GHZ;
2175         priv->band_50.channels = priv->channels_50;
2176         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2177         priv->band_50.bitrates = priv->rates_50;
2178         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2179
2180         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2181 }
2182
2183 /*
2184  * CMD_GET_HW_SPEC (STA version).
2185  */
2186 struct mwl8k_cmd_get_hw_spec_sta {
2187         struct mwl8k_cmd_pkt header;
2188         __u8 hw_rev;
2189         __u8 host_interface;
2190         __le16 num_mcaddrs;
2191         __u8 perm_addr[ETH_ALEN];
2192         __le16 region_code;
2193         __le32 fw_rev;
2194         __le32 ps_cookie;
2195         __le32 caps;
2196         __u8 mcs_bitmap[16];
2197         __le32 rx_queue_ptr;
2198         __le32 num_tx_queues;
2199         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2200         __le32 caps2;
2201         __le32 num_tx_desc_per_queue;
2202         __le32 total_rxd;
2203 } __packed;
2204
2205 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2206 #define MWL8K_CAP_GREENFIELD            0x08000000
2207 #define MWL8K_CAP_AMPDU                 0x04000000
2208 #define MWL8K_CAP_RX_STBC               0x01000000
2209 #define MWL8K_CAP_TX_STBC               0x00800000
2210 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2211 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2212 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2213 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2214 #define MWL8K_CAP_DELAY_BA              0x00003000
2215 #define MWL8K_CAP_MIMO                  0x00000200
2216 #define MWL8K_CAP_40MHZ                 0x00000100
2217 #define MWL8K_CAP_BAND_MASK             0x00000007
2218 #define MWL8K_CAP_5GHZ                  0x00000004
2219 #define MWL8K_CAP_2GHZ4                 0x00000001
2220
2221 static void
2222 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2223                   struct ieee80211_supported_band *band, u32 cap)
2224 {
2225         int rx_streams;
2226         int tx_streams;
2227
2228         band->ht_cap.ht_supported = 1;
2229
2230         if (cap & MWL8K_CAP_MAX_AMSDU)
2231                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2232         if (cap & MWL8K_CAP_GREENFIELD)
2233                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2234         if (cap & MWL8K_CAP_AMPDU) {
2235                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2236                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2237                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2238         }
2239         if (cap & MWL8K_CAP_RX_STBC)
2240                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2241         if (cap & MWL8K_CAP_TX_STBC)
2242                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2243         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2244                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2245         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2246                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2247         if (cap & MWL8K_CAP_DELAY_BA)
2248                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2249         if (cap & MWL8K_CAP_40MHZ)
2250                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2251
2252         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2253         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2254
2255         band->ht_cap.mcs.rx_mask[0] = 0xff;
2256         if (rx_streams >= 2)
2257                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2258         if (rx_streams >= 3)
2259                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2260         band->ht_cap.mcs.rx_mask[4] = 0x01;
2261         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2262
2263         if (rx_streams != tx_streams) {
2264                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2265                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2266                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2267         }
2268 }
2269
2270 static void
2271 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2272 {
2273         struct mwl8k_priv *priv = hw->priv;
2274
2275         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2276                 mwl8k_setup_2ghz_band(hw);
2277                 if (caps & MWL8K_CAP_MIMO)
2278                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2279         }
2280
2281         if (caps & MWL8K_CAP_5GHZ) {
2282                 mwl8k_setup_5ghz_band(hw);
2283                 if (caps & MWL8K_CAP_MIMO)
2284                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2285         }
2286 }
2287
2288 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2289 {
2290         struct mwl8k_priv *priv = hw->priv;
2291         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2292         int rc;
2293         int i;
2294
2295         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2296         if (cmd == NULL)
2297                 return -ENOMEM;
2298
2299         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2300         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2301
2302         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2303         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2304         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2305         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2306         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2307                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2308         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2309         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2310
2311         rc = mwl8k_post_cmd(hw, &cmd->header);
2312
2313         if (!rc) {
2314                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2315                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2316                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2317                 priv->hw_rev = cmd->hw_rev;
2318                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2319                 priv->ap_macids_supported = 0x00000000;
2320                 priv->sta_macids_supported = 0x00000001;
2321         }
2322
2323         kfree(cmd);
2324         return rc;
2325 }
2326
2327 /*
2328  * CMD_GET_HW_SPEC (AP version).
2329  */
2330 struct mwl8k_cmd_get_hw_spec_ap {
2331         struct mwl8k_cmd_pkt header;
2332         __u8 hw_rev;
2333         __u8 host_interface;
2334         __le16 num_wcb;
2335         __le16 num_mcaddrs;
2336         __u8 perm_addr[ETH_ALEN];
2337         __le16 region_code;
2338         __le16 num_antenna;
2339         __le32 fw_rev;
2340         __le32 wcbbase0;
2341         __le32 rxwrptr;
2342         __le32 rxrdptr;
2343         __le32 ps_cookie;
2344         __le32 wcbbase1;
2345         __le32 wcbbase2;
2346         __le32 wcbbase3;
2347         __le32 fw_api_version;
2348         __le32 caps;
2349         __le32 num_of_ampdu_queues;
2350         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2351 } __packed;
2352
2353 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2354 {
2355         struct mwl8k_priv *priv = hw->priv;
2356         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2357         int rc, i;
2358         u32 api_version;
2359
2360         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2361         if (cmd == NULL)
2362                 return -ENOMEM;
2363
2364         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2365         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2366
2367         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2368         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2369
2370         rc = mwl8k_post_cmd(hw, &cmd->header);
2371
2372         if (!rc) {
2373                 int off;
2374
2375                 api_version = le32_to_cpu(cmd->fw_api_version);
2376                 if (priv->device_info->fw_api_ap != api_version) {
2377                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2378                                "  Expected %d got %d.\n", MWL8K_NAME,
2379                                priv->device_info->part_name,
2380                                priv->device_info->fw_api_ap,
2381                                api_version);
2382                         rc = -EINVAL;
2383                         goto done;
2384                 }
2385                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2386                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2387                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2388                 priv->hw_rev = cmd->hw_rev;
2389                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2390                 priv->ap_macids_supported = 0x000000ff;
2391                 priv->sta_macids_supported = 0x00000000;
2392                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2393                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2394                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2395                                    " but we only support %d.\n",
2396                                    priv->num_ampdu_queues,
2397                                    MWL8K_MAX_AMPDU_QUEUES);
2398                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2399                 }
2400                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2401                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2402
2403                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2404                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2405
2406                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2407                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2408                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2409                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2410
2411                 for (i = 0; i < priv->num_ampdu_queues; i++)
2412                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2413                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2414         }
2415
2416 done:
2417         kfree(cmd);
2418         return rc;
2419 }
2420
2421 /*
2422  * CMD_SET_HW_SPEC.
2423  */
2424 struct mwl8k_cmd_set_hw_spec {
2425         struct mwl8k_cmd_pkt header;
2426         __u8 hw_rev;
2427         __u8 host_interface;
2428         __le16 num_mcaddrs;
2429         __u8 perm_addr[ETH_ALEN];
2430         __le16 region_code;
2431         __le32 fw_rev;
2432         __le32 ps_cookie;
2433         __le32 caps;
2434         __le32 rx_queue_ptr;
2435         __le32 num_tx_queues;
2436         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2437         __le32 flags;
2438         __le32 num_tx_desc_per_queue;
2439         __le32 total_rxd;
2440 } __packed;
2441
2442 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2443  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2444  * the packets that are queued for more than 500ms, will be dropped in the
2445  * hardware. This helps minimizing the issues caused due to head-of-line
2446  * blocking where a slow client can hog the bandwidth and affect traffic to a
2447  * faster client.
2448  */
2449 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2450 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2451 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2452 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2453
2454 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2455 {
2456         struct mwl8k_priv *priv = hw->priv;
2457         struct mwl8k_cmd_set_hw_spec *cmd;
2458         int rc;
2459         int i;
2460
2461         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2462         if (cmd == NULL)
2463                 return -ENOMEM;
2464
2465         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2466         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2467
2468         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2469         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2470         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2471
2472         /*
2473          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2474          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2475          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2476          * priority is interpreted the right way in firmware.
2477          */
2478         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2479                 int j = mwl8k_tx_queues(priv) - 1 - i;
2480                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2481         }
2482
2483         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2484                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2485                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2486         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2487         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2488
2489         rc = mwl8k_post_cmd(hw, &cmd->header);
2490         kfree(cmd);
2491
2492         return rc;
2493 }
2494
2495 /*
2496  * CMD_MAC_MULTICAST_ADR.
2497  */
2498 struct mwl8k_cmd_mac_multicast_adr {
2499         struct mwl8k_cmd_pkt header;
2500         __le16 action;
2501         __le16 numaddr;
2502         __u8 addr[0][ETH_ALEN];
2503 };
2504
2505 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2506 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2507 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2508 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2509
2510 static struct mwl8k_cmd_pkt *
2511 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2512                               struct netdev_hw_addr_list *mc_list)
2513 {
2514         struct mwl8k_priv *priv = hw->priv;
2515         struct mwl8k_cmd_mac_multicast_adr *cmd;
2516         int size;
2517         int mc_count = 0;
2518
2519         if (mc_list)
2520                 mc_count = netdev_hw_addr_list_count(mc_list);
2521
2522         if (allmulti || mc_count > priv->num_mcaddrs) {
2523                 allmulti = 1;
2524                 mc_count = 0;
2525         }
2526
2527         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2528
2529         cmd = kzalloc(size, GFP_ATOMIC);
2530         if (cmd == NULL)
2531                 return NULL;
2532
2533         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2534         cmd->header.length = cpu_to_le16(size);
2535         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2536                                   MWL8K_ENABLE_RX_BROADCAST);
2537
2538         if (allmulti) {
2539                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2540         } else if (mc_count) {
2541                 struct netdev_hw_addr *ha;
2542                 int i = 0;
2543
2544                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2545                 cmd->numaddr = cpu_to_le16(mc_count);
2546                 netdev_hw_addr_list_for_each(ha, mc_list) {
2547                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2548                 }
2549         }
2550
2551         return &cmd->header;
2552 }
2553
2554 /*
2555  * CMD_GET_STAT.
2556  */
2557 struct mwl8k_cmd_get_stat {
2558         struct mwl8k_cmd_pkt header;
2559         __le32 stats[64];
2560 } __packed;
2561
2562 #define MWL8K_STAT_ACK_FAILURE  9
2563 #define MWL8K_STAT_RTS_FAILURE  12
2564 #define MWL8K_STAT_FCS_ERROR    24
2565 #define MWL8K_STAT_RTS_SUCCESS  11
2566
2567 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2568                               struct ieee80211_low_level_stats *stats)
2569 {
2570         struct mwl8k_cmd_get_stat *cmd;
2571         int rc;
2572
2573         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2574         if (cmd == NULL)
2575                 return -ENOMEM;
2576
2577         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2578         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2579
2580         rc = mwl8k_post_cmd(hw, &cmd->header);
2581         if (!rc) {
2582                 stats->dot11ACKFailureCount =
2583                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2584                 stats->dot11RTSFailureCount =
2585                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2586                 stats->dot11FCSErrorCount =
2587                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2588                 stats->dot11RTSSuccessCount =
2589                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2590         }
2591         kfree(cmd);
2592
2593         return rc;
2594 }
2595
2596 /*
2597  * CMD_RADIO_CONTROL.
2598  */
2599 struct mwl8k_cmd_radio_control {
2600         struct mwl8k_cmd_pkt header;
2601         __le16 action;
2602         __le16 control;
2603         __le16 radio_on;
2604 } __packed;
2605
2606 static int
2607 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2608 {
2609         struct mwl8k_priv *priv = hw->priv;
2610         struct mwl8k_cmd_radio_control *cmd;
2611         int rc;
2612
2613         if (enable == priv->radio_on && !force)
2614                 return 0;
2615
2616         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2617         if (cmd == NULL)
2618                 return -ENOMEM;
2619
2620         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2621         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2622         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2623         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2624         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2625
2626         rc = mwl8k_post_cmd(hw, &cmd->header);
2627         kfree(cmd);
2628
2629         if (!rc)
2630                 priv->radio_on = enable;
2631
2632         return rc;
2633 }
2634
2635 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2636 {
2637         return mwl8k_cmd_radio_control(hw, 0, 0);
2638 }
2639
2640 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2641 {
2642         return mwl8k_cmd_radio_control(hw, 1, 0);
2643 }
2644
2645 static int
2646 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2647 {
2648         struct mwl8k_priv *priv = hw->priv;
2649
2650         priv->radio_short_preamble = short_preamble;
2651
2652         return mwl8k_cmd_radio_control(hw, 1, 1);
2653 }
2654
2655 /*
2656  * CMD_RF_TX_POWER.
2657  */
2658 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2659
2660 struct mwl8k_cmd_rf_tx_power {
2661         struct mwl8k_cmd_pkt header;
2662         __le16 action;
2663         __le16 support_level;
2664         __le16 current_level;
2665         __le16 reserved;
2666         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2667 } __packed;
2668
2669 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2670 {
2671         struct mwl8k_cmd_rf_tx_power *cmd;
2672         int rc;
2673
2674         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2675         if (cmd == NULL)
2676                 return -ENOMEM;
2677
2678         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2679         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2680         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2681         cmd->support_level = cpu_to_le16(dBm);
2682
2683         rc = mwl8k_post_cmd(hw, &cmd->header);
2684         kfree(cmd);
2685
2686         return rc;
2687 }
2688
2689 /*
2690  * CMD_TX_POWER.
2691  */
2692 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2693
2694 struct mwl8k_cmd_tx_power {
2695         struct mwl8k_cmd_pkt header;
2696         __le16 action;
2697         __le16 band;
2698         __le16 channel;
2699         __le16 bw;
2700         __le16 sub_ch;
2701         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2702 } __packed;
2703
2704 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2705                                      struct ieee80211_conf *conf,
2706                                      unsigned short pwr)
2707 {
2708         struct ieee80211_channel *channel = conf->channel;
2709         struct mwl8k_cmd_tx_power *cmd;
2710         int rc;
2711         int i;
2712
2713         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2714         if (cmd == NULL)
2715                 return -ENOMEM;
2716
2717         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2718         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2719         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2720
2721         if (channel->band == IEEE80211_BAND_2GHZ)
2722                 cmd->band = cpu_to_le16(0x1);
2723         else if (channel->band == IEEE80211_BAND_5GHZ)
2724                 cmd->band = cpu_to_le16(0x4);
2725
2726         cmd->channel = channel->hw_value;
2727
2728         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2729             conf->channel_type == NL80211_CHAN_HT20) {
2730                 cmd->bw = cpu_to_le16(0x2);
2731         } else {
2732                 cmd->bw = cpu_to_le16(0x4);
2733                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2734                         cmd->sub_ch = cpu_to_le16(0x3);
2735                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2736                         cmd->sub_ch = cpu_to_le16(0x1);
2737         }
2738
2739         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2740                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2741
2742         rc = mwl8k_post_cmd(hw, &cmd->header);
2743         kfree(cmd);
2744
2745         return rc;
2746 }
2747
2748 /*
2749  * CMD_RF_ANTENNA.
2750  */
2751 struct mwl8k_cmd_rf_antenna {
2752         struct mwl8k_cmd_pkt header;
2753         __le16 antenna;
2754         __le16 mode;
2755 } __packed;
2756
2757 #define MWL8K_RF_ANTENNA_RX             1
2758 #define MWL8K_RF_ANTENNA_TX             2
2759
2760 static int
2761 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2762 {
2763         struct mwl8k_cmd_rf_antenna *cmd;
2764         int rc;
2765
2766         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2767         if (cmd == NULL)
2768                 return -ENOMEM;
2769
2770         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2771         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2772         cmd->antenna = cpu_to_le16(antenna);
2773         cmd->mode = cpu_to_le16(mask);
2774
2775         rc = mwl8k_post_cmd(hw, &cmd->header);
2776         kfree(cmd);
2777
2778         return rc;
2779 }
2780
2781 /*
2782  * CMD_SET_BEACON.
2783  */
2784 struct mwl8k_cmd_set_beacon {
2785         struct mwl8k_cmd_pkt header;
2786         __le16 beacon_len;
2787         __u8 beacon[0];
2788 };
2789
2790 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2791                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2792 {
2793         struct mwl8k_cmd_set_beacon *cmd;
2794         int rc;
2795
2796         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2797         if (cmd == NULL)
2798                 return -ENOMEM;
2799
2800         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2801         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2802         cmd->beacon_len = cpu_to_le16(len);
2803         memcpy(cmd->beacon, beacon, len);
2804
2805         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2806         kfree(cmd);
2807
2808         return rc;
2809 }
2810
2811 /*
2812  * CMD_SET_PRE_SCAN.
2813  */
2814 struct mwl8k_cmd_set_pre_scan {
2815         struct mwl8k_cmd_pkt header;
2816 } __packed;
2817
2818 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2819 {
2820         struct mwl8k_cmd_set_pre_scan *cmd;
2821         int rc;
2822
2823         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2824         if (cmd == NULL)
2825                 return -ENOMEM;
2826
2827         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2828         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2829
2830         rc = mwl8k_post_cmd(hw, &cmd->header);
2831         kfree(cmd);
2832
2833         return rc;
2834 }
2835
2836 /*
2837  * CMD_SET_POST_SCAN.
2838  */
2839 struct mwl8k_cmd_set_post_scan {
2840         struct mwl8k_cmd_pkt header;
2841         __le32 isibss;
2842         __u8 bssid[ETH_ALEN];
2843 } __packed;
2844
2845 static int
2846 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2847 {
2848         struct mwl8k_cmd_set_post_scan *cmd;
2849         int rc;
2850
2851         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2852         if (cmd == NULL)
2853                 return -ENOMEM;
2854
2855         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2856         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2857         cmd->isibss = 0;
2858         memcpy(cmd->bssid, mac, ETH_ALEN);
2859
2860         rc = mwl8k_post_cmd(hw, &cmd->header);
2861         kfree(cmd);
2862
2863         return rc;
2864 }
2865
2866 /*
2867  * CMD_SET_RF_CHANNEL.
2868  */
2869 struct mwl8k_cmd_set_rf_channel {
2870         struct mwl8k_cmd_pkt header;
2871         __le16 action;
2872         __u8 current_channel;
2873         __le32 channel_flags;
2874 } __packed;
2875
2876 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2877                                     struct ieee80211_conf *conf)
2878 {
2879         struct ieee80211_channel *channel = conf->channel;
2880         struct mwl8k_cmd_set_rf_channel *cmd;
2881         int rc;
2882
2883         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2884         if (cmd == NULL)
2885                 return -ENOMEM;
2886
2887         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2888         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2889         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2890         cmd->current_channel = channel->hw_value;
2891
2892         if (channel->band == IEEE80211_BAND_2GHZ)
2893                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2894         else if (channel->band == IEEE80211_BAND_5GHZ)
2895                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2896
2897         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2898             conf->channel_type == NL80211_CHAN_HT20)
2899                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2900         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2901                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2902         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2903                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2904
2905         rc = mwl8k_post_cmd(hw, &cmd->header);
2906         kfree(cmd);
2907
2908         return rc;
2909 }
2910
2911 /*
2912  * CMD_SET_AID.
2913  */
2914 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2915 #define MWL8K_FRAME_PROT_11G                            0x07
2916 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2917 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2918
2919 struct mwl8k_cmd_update_set_aid {
2920         struct  mwl8k_cmd_pkt header;
2921         __le16  aid;
2922
2923          /* AP's MAC address (BSSID) */
2924         __u8    bssid[ETH_ALEN];
2925         __le16  protection_mode;
2926         __u8    supp_rates[14];
2927 } __packed;
2928
2929 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2930 {
2931         int i;
2932         int j;
2933
2934         /*
2935          * Clear nonstandard rates 4 and 13.
2936          */
2937         mask &= 0x1fef;
2938
2939         for (i = 0, j = 0; i < 14; i++) {
2940                 if (mask & (1 << i))
2941                         rates[j++] = mwl8k_rates_24[i].hw_value;
2942         }
2943 }
2944
2945 static int
2946 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2947                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2948 {
2949         struct mwl8k_cmd_update_set_aid *cmd;
2950         u16 prot_mode;
2951         int rc;
2952
2953         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2954         if (cmd == NULL)
2955                 return -ENOMEM;
2956
2957         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2958         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2959         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2960         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2961
2962         if (vif->bss_conf.use_cts_prot) {
2963                 prot_mode = MWL8K_FRAME_PROT_11G;
2964         } else {
2965                 switch (vif->bss_conf.ht_operation_mode &
2966                         IEEE80211_HT_OP_MODE_PROTECTION) {
2967                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2968                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2969                         break;
2970                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2971                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2972                         break;
2973                 default:
2974                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2975                         break;
2976                 }
2977         }
2978         cmd->protection_mode = cpu_to_le16(prot_mode);
2979
2980         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2981
2982         rc = mwl8k_post_cmd(hw, &cmd->header);
2983         kfree(cmd);
2984
2985         return rc;
2986 }
2987
2988 /*
2989  * CMD_SET_RATE.
2990  */
2991 struct mwl8k_cmd_set_rate {
2992         struct  mwl8k_cmd_pkt header;
2993         __u8    legacy_rates[14];
2994
2995         /* Bitmap for supported MCS codes.  */
2996         __u8    mcs_set[16];
2997         __u8    reserved[16];
2998 } __packed;
2999
3000 static int
3001 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3002                    u32 legacy_rate_mask, u8 *mcs_rates)
3003 {
3004         struct mwl8k_cmd_set_rate *cmd;
3005         int rc;
3006
3007         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3008         if (cmd == NULL)
3009                 return -ENOMEM;
3010
3011         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3012         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3013         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3014         memcpy(cmd->mcs_set, mcs_rates, 16);
3015
3016         rc = mwl8k_post_cmd(hw, &cmd->header);
3017         kfree(cmd);
3018
3019         return rc;
3020 }
3021
3022 /*
3023  * CMD_FINALIZE_JOIN.
3024  */
3025 #define MWL8K_FJ_BEACON_MAXLEN  128
3026
3027 struct mwl8k_cmd_finalize_join {
3028         struct mwl8k_cmd_pkt header;
3029         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3030         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3031 } __packed;
3032
3033 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3034                                    int framelen, int dtim)
3035 {
3036         struct mwl8k_cmd_finalize_join *cmd;
3037         struct ieee80211_mgmt *payload = frame;
3038         int payload_len;
3039         int rc;
3040
3041         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3042         if (cmd == NULL)
3043                 return -ENOMEM;
3044
3045         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3046         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3047         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3048
3049         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3050         if (payload_len < 0)
3051                 payload_len = 0;
3052         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3053                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3054
3055         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3056
3057         rc = mwl8k_post_cmd(hw, &cmd->header);
3058         kfree(cmd);
3059
3060         return rc;
3061 }
3062
3063 /*
3064  * CMD_SET_RTS_THRESHOLD.
3065  */
3066 struct mwl8k_cmd_set_rts_threshold {
3067         struct mwl8k_cmd_pkt header;
3068         __le16 action;
3069         __le16 threshold;
3070 } __packed;
3071
3072 static int
3073 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3074 {
3075         struct mwl8k_cmd_set_rts_threshold *cmd;
3076         int rc;
3077
3078         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3079         if (cmd == NULL)
3080                 return -ENOMEM;
3081
3082         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3083         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3084         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3085         cmd->threshold = cpu_to_le16(rts_thresh);
3086
3087         rc = mwl8k_post_cmd(hw, &cmd->header);
3088         kfree(cmd);
3089
3090         return rc;
3091 }
3092
3093 /*
3094  * CMD_SET_SLOT.
3095  */
3096 struct mwl8k_cmd_set_slot {
3097         struct mwl8k_cmd_pkt header;
3098         __le16 action;
3099         __u8 short_slot;
3100 } __packed;
3101
3102 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3103 {
3104         struct mwl8k_cmd_set_slot *cmd;
3105         int rc;
3106
3107         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3108         if (cmd == NULL)
3109                 return -ENOMEM;
3110
3111         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3112         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3113         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3114         cmd->short_slot = short_slot_time;
3115
3116         rc = mwl8k_post_cmd(hw, &cmd->header);
3117         kfree(cmd);
3118
3119         return rc;
3120 }
3121
3122 /*
3123  * CMD_SET_EDCA_PARAMS.
3124  */
3125 struct mwl8k_cmd_set_edca_params {
3126         struct mwl8k_cmd_pkt header;
3127
3128         /* See MWL8K_SET_EDCA_XXX below */
3129         __le16 action;
3130
3131         /* TX opportunity in units of 32 us */
3132         __le16 txop;
3133
3134         union {
3135                 struct {
3136                         /* Log exponent of max contention period: 0...15 */
3137                         __le32 log_cw_max;
3138
3139                         /* Log exponent of min contention period: 0...15 */
3140                         __le32 log_cw_min;
3141
3142                         /* Adaptive interframe spacing in units of 32us */
3143                         __u8 aifs;
3144
3145                         /* TX queue to configure */
3146                         __u8 txq;
3147                 } ap;
3148                 struct {
3149                         /* Log exponent of max contention period: 0...15 */
3150                         __u8 log_cw_max;
3151
3152                         /* Log exponent of min contention period: 0...15 */
3153                         __u8 log_cw_min;
3154
3155                         /* Adaptive interframe spacing in units of 32us */
3156                         __u8 aifs;
3157
3158                         /* TX queue to configure */
3159                         __u8 txq;
3160                 } sta;
3161         };
3162 } __packed;
3163
3164 #define MWL8K_SET_EDCA_CW       0x01
3165 #define MWL8K_SET_EDCA_TXOP     0x02
3166 #define MWL8K_SET_EDCA_AIFS     0x04
3167
3168 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3169                                  MWL8K_SET_EDCA_TXOP | \
3170                                  MWL8K_SET_EDCA_AIFS)
3171
3172 static int
3173 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3174                           __u16 cw_min, __u16 cw_max,
3175                           __u8 aifs, __u16 txop)
3176 {
3177         struct mwl8k_priv *priv = hw->priv;
3178         struct mwl8k_cmd_set_edca_params *cmd;
3179         int rc;
3180
3181         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3182         if (cmd == NULL)
3183                 return -ENOMEM;
3184
3185         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3186         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3187         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3188         cmd->txop = cpu_to_le16(txop);
3189         if (priv->ap_fw) {
3190                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3191                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3192                 cmd->ap.aifs = aifs;
3193                 cmd->ap.txq = qnum;
3194         } else {
3195                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3196                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3197                 cmd->sta.aifs = aifs;
3198                 cmd->sta.txq = qnum;
3199         }
3200
3201         rc = mwl8k_post_cmd(hw, &cmd->header);
3202         kfree(cmd);
3203
3204         return rc;
3205 }
3206
3207 /*
3208  * CMD_SET_WMM_MODE.
3209  */
3210 struct mwl8k_cmd_set_wmm_mode {
3211         struct mwl8k_cmd_pkt header;
3212         __le16 action;
3213 } __packed;
3214
3215 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3216 {
3217         struct mwl8k_priv *priv = hw->priv;
3218         struct mwl8k_cmd_set_wmm_mode *cmd;
3219         int rc;
3220
3221         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3222         if (cmd == NULL)
3223                 return -ENOMEM;
3224
3225         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3226         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3227         cmd->action = cpu_to_le16(!!enable);
3228
3229         rc = mwl8k_post_cmd(hw, &cmd->header);
3230         kfree(cmd);
3231
3232         if (!rc)
3233                 priv->wmm_enabled = enable;
3234
3235         return rc;
3236 }
3237
3238 /*
3239  * CMD_MIMO_CONFIG.
3240  */
3241 struct mwl8k_cmd_mimo_config {
3242         struct mwl8k_cmd_pkt header;
3243         __le32 action;
3244         __u8 rx_antenna_map;
3245         __u8 tx_antenna_map;
3246 } __packed;
3247
3248 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3249 {
3250         struct mwl8k_cmd_mimo_config *cmd;
3251         int rc;
3252
3253         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3254         if (cmd == NULL)
3255                 return -ENOMEM;
3256
3257         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3258         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3259         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3260         cmd->rx_antenna_map = rx;
3261         cmd->tx_antenna_map = tx;
3262
3263         rc = mwl8k_post_cmd(hw, &cmd->header);
3264         kfree(cmd);
3265
3266         return rc;
3267 }
3268
3269 /*
3270  * CMD_USE_FIXED_RATE (STA version).
3271  */
3272 struct mwl8k_cmd_use_fixed_rate_sta {
3273         struct mwl8k_cmd_pkt header;
3274         __le32 action;
3275         __le32 allow_rate_drop;
3276         __le32 num_rates;
3277         struct {
3278                 __le32 is_ht_rate;
3279                 __le32 enable_retry;
3280                 __le32 rate;
3281                 __le32 retry_count;
3282         } rate_entry[8];
3283         __le32 rate_type;
3284         __le32 reserved1;
3285         __le32 reserved2;
3286 } __packed;
3287
3288 #define MWL8K_USE_AUTO_RATE     0x0002
3289 #define MWL8K_UCAST_RATE        0
3290
3291 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3292 {
3293         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3294         int rc;
3295
3296         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3297         if (cmd == NULL)
3298                 return -ENOMEM;
3299
3300         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3301         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3302         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3303         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3304
3305         rc = mwl8k_post_cmd(hw, &cmd->header);
3306         kfree(cmd);
3307
3308         return rc;
3309 }
3310
3311 /*
3312  * CMD_USE_FIXED_RATE (AP version).
3313  */
3314 struct mwl8k_cmd_use_fixed_rate_ap {
3315         struct mwl8k_cmd_pkt header;
3316         __le32 action;
3317         __le32 allow_rate_drop;
3318         __le32 num_rates;
3319         struct mwl8k_rate_entry_ap {
3320                 __le32 is_ht_rate;
3321                 __le32 enable_retry;
3322                 __le32 rate;
3323                 __le32 retry_count;
3324         } rate_entry[4];
3325         u8 multicast_rate;
3326         u8 multicast_rate_type;
3327         u8 management_rate;
3328 } __packed;
3329
3330 static int
3331 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3332 {
3333         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3334         int rc;
3335
3336         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3337         if (cmd == NULL)
3338                 return -ENOMEM;
3339
3340         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3341         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3342         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3343         cmd->multicast_rate = mcast;
3344         cmd->management_rate = mgmt;
3345
3346         rc = mwl8k_post_cmd(hw, &cmd->header);
3347         kfree(cmd);
3348
3349         return rc;
3350 }
3351
3352 /*
3353  * CMD_ENABLE_SNIFFER.
3354  */
3355 struct mwl8k_cmd_enable_sniffer {
3356         struct mwl8k_cmd_pkt header;
3357         __le32 action;
3358 } __packed;
3359
3360 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3361 {
3362         struct mwl8k_cmd_enable_sniffer *cmd;
3363         int rc;
3364
3365         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3366         if (cmd == NULL)
3367                 return -ENOMEM;
3368
3369         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3370         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3371         cmd->action = cpu_to_le32(!!enable);
3372
3373         rc = mwl8k_post_cmd(hw, &cmd->header);
3374         kfree(cmd);
3375
3376         return rc;
3377 }
3378
3379 /*
3380  * CMD_SET_MAC_ADDR.
3381  */
3382 struct mwl8k_cmd_set_mac_addr {
3383         struct mwl8k_cmd_pkt header;
3384         union {
3385                 struct {
3386                         __le16 mac_type;
3387                         __u8 mac_addr[ETH_ALEN];
3388                 } mbss;
3389                 __u8 mac_addr[ETH_ALEN];
3390         };
3391 } __packed;
3392
3393 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3394 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3395 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3396 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3397
3398 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3399                                   struct ieee80211_vif *vif, u8 *mac)
3400 {
3401         struct mwl8k_priv *priv = hw->priv;
3402         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3403         struct mwl8k_cmd_set_mac_addr *cmd;
3404         int mac_type;
3405         int rc;
3406
3407         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3408         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3409                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3410                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3411                 else
3412                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3413         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3414                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3415                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3416                 else
3417                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3418         }
3419
3420         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3421         if (cmd == NULL)
3422                 return -ENOMEM;
3423
3424         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3425         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3426         if (priv->ap_fw) {
3427                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3428                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3429         } else {
3430                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3431         }
3432
3433         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3434         kfree(cmd);
3435
3436         return rc;
3437 }
3438
3439 /*
3440  * CMD_SET_RATEADAPT_MODE.
3441  */
3442 struct mwl8k_cmd_set_rate_adapt_mode {
3443         struct mwl8k_cmd_pkt header;
3444         __le16 action;
3445         __le16 mode;
3446 } __packed;
3447
3448 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3449 {
3450         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3451         int rc;
3452
3453         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3454         if (cmd == NULL)
3455                 return -ENOMEM;
3456
3457         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3458         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3459         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3460         cmd->mode = cpu_to_le16(mode);
3461
3462         rc = mwl8k_post_cmd(hw, &cmd->header);
3463         kfree(cmd);
3464
3465         return rc;
3466 }
3467
3468 /*
3469  * CMD_GET_WATCHDOG_BITMAP.
3470  */
3471 struct mwl8k_cmd_get_watchdog_bitmap {
3472         struct mwl8k_cmd_pkt header;
3473         u8      bitmap;
3474 } __packed;
3475
3476 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3477 {
3478         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3479         int rc;
3480
3481         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3482         if (cmd == NULL)
3483                 return -ENOMEM;
3484
3485         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3486         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3487
3488         rc = mwl8k_post_cmd(hw, &cmd->header);
3489         if (!rc)
3490                 *bitmap = cmd->bitmap;
3491
3492         kfree(cmd);
3493
3494         return rc;
3495 }
3496
3497 #define INVALID_BA      0xAA
3498 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3499 {
3500         int rc;
3501         u8 bitmap = 0, stream_index;
3502         struct mwl8k_ampdu_stream *streams;
3503         struct mwl8k_priv *priv =
3504                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3505
3506         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3507         if (rc)
3508                 return;
3509
3510         if (bitmap == INVALID_BA)
3511                 return;
3512
3513         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3514         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3515
3516         BUG_ON(stream_index >= priv->num_ampdu_queues);
3517
3518         streams = &priv->ampdu[stream_index];
3519
3520         if (streams->state == AMPDU_STREAM_ACTIVE)
3521                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3522
3523         return;
3524 }
3525
3526
3527 /*
3528  * CMD_BSS_START.
3529  */
3530 struct mwl8k_cmd_bss_start {
3531         struct mwl8k_cmd_pkt header;
3532         __le32 enable;
3533 } __packed;
3534
3535 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3536                                struct ieee80211_vif *vif, int enable)
3537 {
3538         struct mwl8k_cmd_bss_start *cmd;
3539         int rc;
3540
3541         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3542         if (cmd == NULL)
3543                 return -ENOMEM;
3544
3545         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3546         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3547         cmd->enable = cpu_to_le32(enable);
3548
3549         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3550         kfree(cmd);
3551
3552         return rc;
3553 }
3554
3555 /*
3556  * CMD_BASTREAM.
3557  */
3558
3559 /*
3560  * UPSTREAM is tx direction
3561  */
3562 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3563 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3564
3565 enum ba_stream_action_type {
3566         MWL8K_BA_CREATE,
3567         MWL8K_BA_UPDATE,
3568         MWL8K_BA_DESTROY,
3569         MWL8K_BA_FLUSH,
3570         MWL8K_BA_CHECK,
3571 };
3572
3573
3574 struct mwl8k_create_ba_stream {
3575         __le32  flags;
3576         __le32  idle_thrs;
3577         __le32  bar_thrs;
3578         __le32  window_size;
3579         u8      peer_mac_addr[6];
3580         u8      dialog_token;
3581         u8      tid;
3582         u8      queue_id;
3583         u8      param_info;
3584         __le32  ba_context;
3585         u8      reset_seq_no_flag;
3586         __le16  curr_seq_no;
3587         u8      sta_src_mac_addr[6];
3588 } __packed;
3589
3590 struct mwl8k_destroy_ba_stream {
3591         __le32  flags;
3592         __le32  ba_context;
3593 } __packed;
3594
3595 struct mwl8k_cmd_bastream {
3596         struct mwl8k_cmd_pkt    header;
3597         __le32  action;
3598         union {
3599                 struct mwl8k_create_ba_stream   create_params;
3600                 struct mwl8k_destroy_ba_stream  destroy_params;
3601         };
3602 } __packed;
3603
3604 static int
3605 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3606 {
3607         struct mwl8k_cmd_bastream *cmd;
3608         int rc;
3609
3610         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3611         if (cmd == NULL)
3612                 return -ENOMEM;
3613
3614         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3615         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3616
3617         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3618
3619         cmd->create_params.queue_id = stream->idx;
3620         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3621                ETH_ALEN);
3622         cmd->create_params.tid = stream->tid;
3623
3624         cmd->create_params.flags =
3625                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3626                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3627
3628         rc = mwl8k_post_cmd(hw, &cmd->header);
3629
3630         kfree(cmd);
3631
3632         return rc;
3633 }
3634
3635 static int
3636 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3637                 u8 buf_size)
3638 {
3639         struct mwl8k_cmd_bastream *cmd;
3640         int rc;
3641
3642         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3643         if (cmd == NULL)
3644                 return -ENOMEM;
3645
3646
3647         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3648         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3649
3650         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3651
3652         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3653         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3654         cmd->create_params.queue_id = stream->idx;
3655
3656         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3657         cmd->create_params.tid = stream->tid;
3658         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3659         cmd->create_params.reset_seq_no_flag = 1;
3660
3661         cmd->create_params.param_info =
3662                 (stream->sta->ht_cap.ampdu_factor &
3663                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3664                 ((stream->sta->ht_cap.ampdu_density << 2) &
3665                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3666
3667         cmd->create_params.flags =
3668                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3669                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3670
3671         rc = mwl8k_post_cmd(hw, &cmd->header);
3672
3673         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3674                 stream->sta->addr, stream->tid);
3675         kfree(cmd);
3676
3677         return rc;
3678 }
3679
3680 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3681                              struct mwl8k_ampdu_stream *stream)
3682 {
3683         struct mwl8k_cmd_bastream *cmd;
3684
3685         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3686         if (cmd == NULL)
3687                 return;
3688
3689         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3690         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3691         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3692
3693         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3694         mwl8k_post_cmd(hw, &cmd->header);
3695
3696         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3697
3698         kfree(cmd);
3699 }
3700
3701 /*
3702  * CMD_SET_NEW_STN.
3703  */
3704 struct mwl8k_cmd_set_new_stn {
3705         struct mwl8k_cmd_pkt header;
3706         __le16 aid;
3707         __u8 mac_addr[6];
3708         __le16 stn_id;
3709         __le16 action;
3710         __le16 rsvd;
3711         __le32 legacy_rates;
3712         __u8 ht_rates[4];
3713         __le16 cap_info;
3714         __le16 ht_capabilities_info;
3715         __u8 mac_ht_param_info;
3716         __u8 rev;
3717         __u8 control_channel;
3718         __u8 add_channel;
3719         __le16 op_mode;
3720         __le16 stbc;
3721         __u8 add_qos_info;
3722         __u8 is_qos_sta;
3723         __le32 fw_sta_ptr;
3724 } __packed;
3725
3726 #define MWL8K_STA_ACTION_ADD            0
3727 #define MWL8K_STA_ACTION_REMOVE         2
3728
3729 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3730                                      struct ieee80211_vif *vif,
3731                                      struct ieee80211_sta *sta)
3732 {
3733         struct mwl8k_cmd_set_new_stn *cmd;
3734         u32 rates;
3735         int rc;
3736
3737         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3738         if (cmd == NULL)
3739                 return -ENOMEM;
3740
3741         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3742         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3743         cmd->aid = cpu_to_le16(sta->aid);
3744         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3745         cmd->stn_id = cpu_to_le16(sta->aid);
3746         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3747         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3748                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3749         else
3750                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3751         cmd->legacy_rates = cpu_to_le32(rates);
3752         if (sta->ht_cap.ht_supported) {
3753                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3754                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3755                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3756                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3757                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3758                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3759                         ((sta->ht_cap.ampdu_density & 7) << 2);
3760                 cmd->is_qos_sta = 1;
3761         }
3762
3763         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3764         kfree(cmd);
3765
3766         return rc;
3767 }
3768
3769 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3770                                           struct ieee80211_vif *vif)
3771 {
3772         struct mwl8k_cmd_set_new_stn *cmd;
3773         int rc;
3774
3775         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3776         if (cmd == NULL)
3777                 return -ENOMEM;
3778
3779         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3780         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3781         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3782
3783         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3784         kfree(cmd);
3785
3786         return rc;
3787 }
3788
3789 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3790                                      struct ieee80211_vif *vif, u8 *addr)
3791 {
3792         struct mwl8k_cmd_set_new_stn *cmd;
3793         int rc;
3794
3795         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3796         if (cmd == NULL)
3797                 return -ENOMEM;
3798
3799         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3800         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3801         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3802         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3803
3804         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3805         kfree(cmd);
3806
3807         return rc;
3808 }
3809
3810 /*
3811  * CMD_UPDATE_ENCRYPTION.
3812  */
3813
3814 #define MAX_ENCR_KEY_LENGTH     16
3815 #define MIC_KEY_LENGTH          8
3816
3817 struct mwl8k_cmd_update_encryption {
3818         struct mwl8k_cmd_pkt header;
3819
3820         __le32 action;
3821         __le32 reserved;
3822         __u8 mac_addr[6];
3823         __u8 encr_type;
3824
3825 } __packed;
3826
3827 struct mwl8k_cmd_set_key {
3828         struct mwl8k_cmd_pkt header;
3829
3830         __le32 action;
3831         __le32 reserved;
3832         __le16 length;
3833         __le16 key_type_id;
3834         __le32 key_info;
3835         __le32 key_id;
3836         __le16 key_len;
3837         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3838         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3839         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3840         __le16 tkip_rsc_low;
3841         __le32 tkip_rsc_high;
3842         __le16 tkip_tsc_low;
3843         __le32 tkip_tsc_high;
3844         __u8 mac_addr[6];
3845 } __packed;
3846
3847 enum {
3848         MWL8K_ENCR_ENABLE,
3849         MWL8K_ENCR_SET_KEY,
3850         MWL8K_ENCR_REMOVE_KEY,
3851         MWL8K_ENCR_SET_GROUP_KEY,
3852 };
3853
3854 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3855 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3856 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3857 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3858 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3859
3860 enum {
3861         MWL8K_ALG_WEP,
3862         MWL8K_ALG_TKIP,
3863         MWL8K_ALG_CCMP,
3864 };
3865
3866 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3867 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3868 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3869 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3870 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3871
3872 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3873                                               struct ieee80211_vif *vif,
3874                                               u8 *addr,
3875                                               u8 encr_type)
3876 {
3877         struct mwl8k_cmd_update_encryption *cmd;
3878         int rc;
3879
3880         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3881         if (cmd == NULL)
3882                 return -ENOMEM;
3883
3884         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3885         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3886         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3887         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3888         cmd->encr_type = encr_type;
3889
3890         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3891         kfree(cmd);
3892
3893         return rc;
3894 }
3895
3896 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3897                                                 u8 *addr,
3898                                                 struct ieee80211_key_conf *key)
3899 {
3900         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3901         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3902         cmd->length = cpu_to_le16(sizeof(*cmd) -
3903                                 offsetof(struct mwl8k_cmd_set_key, length));
3904         cmd->key_id = cpu_to_le32(key->keyidx);
3905         cmd->key_len = cpu_to_le16(key->keylen);
3906         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3907
3908         switch (key->cipher) {
3909         case WLAN_CIPHER_SUITE_WEP40:
3910         case WLAN_CIPHER_SUITE_WEP104:
3911                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3912                 if (key->keyidx == 0)
3913                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3914
3915                 break;
3916         case WLAN_CIPHER_SUITE_TKIP:
3917                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3918                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3919                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3920                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3921                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3922                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3923                 break;
3924         case WLAN_CIPHER_SUITE_CCMP:
3925                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3926                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3927                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3928                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3929                 break;
3930         default:
3931                 return -ENOTSUPP;
3932         }
3933
3934         return 0;
3935 }
3936
3937 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3938                                                 struct ieee80211_vif *vif,
3939                                                 u8 *addr,
3940                                                 struct ieee80211_key_conf *key)
3941 {
3942         struct mwl8k_cmd_set_key *cmd;
3943         int rc;
3944         int keymlen;
3945         u32 action;
3946         u8 idx;
3947         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3948
3949         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3950         if (cmd == NULL)
3951                 return -ENOMEM;
3952
3953         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3954         if (rc < 0)
3955                 goto done;
3956
3957         idx = key->keyidx;
3958
3959         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3960                 action = MWL8K_ENCR_SET_KEY;
3961         else
3962                 action = MWL8K_ENCR_SET_GROUP_KEY;
3963
3964         switch (key->cipher) {
3965         case WLAN_CIPHER_SUITE_WEP40:
3966         case WLAN_CIPHER_SUITE_WEP104:
3967                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3968                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3969                                                 sizeof(*key) + key->keylen);
3970                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
3971                 }
3972
3973                 keymlen = 0;
3974                 action = MWL8K_ENCR_SET_KEY;
3975                 break;
3976         case WLAN_CIPHER_SUITE_TKIP:
3977                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3978                 break;
3979         case WLAN_CIPHER_SUITE_CCMP:
3980                 keymlen = key->keylen;
3981                 break;
3982         default:
3983                 rc = -ENOTSUPP;
3984                 goto done;
3985         }
3986
3987         memcpy(cmd->key_material, key->key, keymlen);
3988         cmd->action = cpu_to_le32(action);
3989
3990         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3991 done:
3992         kfree(cmd);
3993
3994         return rc;
3995 }
3996
3997 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3998                                                 struct ieee80211_vif *vif,
3999                                                 u8 *addr,
4000                                                 struct ieee80211_key_conf *key)
4001 {
4002         struct mwl8k_cmd_set_key *cmd;
4003         int rc;
4004         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4005
4006         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4007         if (cmd == NULL)
4008                 return -ENOMEM;
4009
4010         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4011         if (rc < 0)
4012                 goto done;
4013
4014         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4015                         WLAN_CIPHER_SUITE_WEP104)
4016                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4017
4018         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4019
4020         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4021 done:
4022         kfree(cmd);
4023
4024         return rc;
4025 }
4026
4027 static int mwl8k_set_key(struct ieee80211_hw *hw,
4028                          enum set_key_cmd cmd_param,
4029                          struct ieee80211_vif *vif,
4030                          struct ieee80211_sta *sta,
4031                          struct ieee80211_key_conf *key)
4032 {
4033         int rc = 0;
4034         u8 encr_type;
4035         u8 *addr;
4036         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4037
4038         if (vif->type == NL80211_IFTYPE_STATION)
4039                 return -EOPNOTSUPP;
4040
4041         if (sta == NULL)
4042                 addr = hw->wiphy->perm_addr;
4043         else
4044                 addr = sta->addr;
4045
4046         if (cmd_param == SET_KEY) {
4047                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4048                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4049                 if (rc)
4050                         goto out;
4051
4052                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4053                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4054                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4055                 else
4056                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4057
4058                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4059                                                                 encr_type);
4060                 if (rc)
4061                         goto out;
4062
4063                 mwl8k_vif->is_hw_crypto_enabled = true;
4064
4065         } else {
4066                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4067
4068                 if (rc)
4069                         goto out;
4070
4071                 mwl8k_vif->is_hw_crypto_enabled = false;
4072
4073         }
4074 out:
4075         return rc;
4076 }
4077
4078 /*
4079  * CMD_UPDATE_STADB.
4080  */
4081 struct ewc_ht_info {
4082         __le16  control1;
4083         __le16  control2;
4084         __le16  control3;
4085 } __packed;
4086
4087 struct peer_capability_info {
4088         /* Peer type - AP vs. STA.  */
4089         __u8    peer_type;
4090
4091         /* Basic 802.11 capabilities from assoc resp.  */
4092         __le16  basic_caps;
4093
4094         /* Set if peer supports 802.11n high throughput (HT).  */
4095         __u8    ht_support;
4096
4097         /* Valid if HT is supported.  */
4098         __le16  ht_caps;
4099         __u8    extended_ht_caps;
4100         struct ewc_ht_info      ewc_info;
4101
4102         /* Legacy rate table. Intersection of our rates and peer rates.  */
4103         __u8    legacy_rates[12];
4104
4105         /* HT rate table. Intersection of our rates and peer rates.  */
4106         __u8    ht_rates[16];
4107         __u8    pad[16];
4108
4109         /* If set, interoperability mode, no proprietary extensions.  */
4110         __u8    interop;
4111         __u8    pad2;
4112         __u8    station_id;
4113         __le16  amsdu_enabled;
4114 } __packed;
4115
4116 struct mwl8k_cmd_update_stadb {
4117         struct mwl8k_cmd_pkt header;
4118
4119         /* See STADB_ACTION_TYPE */
4120         __le32  action;
4121
4122         /* Peer MAC address */
4123         __u8    peer_addr[ETH_ALEN];
4124
4125         __le32  reserved;
4126
4127         /* Peer info - valid during add/update.  */
4128         struct peer_capability_info     peer_info;
4129 } __packed;
4130
4131 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4132 #define MWL8K_STA_DB_DEL_ENTRY          2
4133
4134 /* Peer Entry flags - used to define the type of the peer node */
4135 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4136
4137 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4138                                       struct ieee80211_vif *vif,
4139                                       struct ieee80211_sta *sta)
4140 {
4141         struct mwl8k_cmd_update_stadb *cmd;
4142         struct peer_capability_info *p;
4143         u32 rates;
4144         int rc;
4145
4146         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4147         if (cmd == NULL)
4148                 return -ENOMEM;
4149
4150         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4151         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4152         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4153         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4154
4155         p = &cmd->peer_info;
4156         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4157         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4158         p->ht_support = sta->ht_cap.ht_supported;
4159         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4160         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4161                 ((sta->ht_cap.ampdu_density & 7) << 2);
4162         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4163                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4164         else
4165                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4166         legacy_rate_mask_to_array(p->legacy_rates, rates);
4167         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4168         p->interop = 1;
4169         p->amsdu_enabled = 0;
4170
4171         rc = mwl8k_post_cmd(hw, &cmd->header);
4172         kfree(cmd);
4173
4174         return rc ? rc : p->station_id;
4175 }
4176
4177 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4178                                       struct ieee80211_vif *vif, u8 *addr)
4179 {
4180         struct mwl8k_cmd_update_stadb *cmd;
4181         int rc;
4182
4183         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4184         if (cmd == NULL)
4185                 return -ENOMEM;
4186
4187         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4188         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4189         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4190         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4191
4192         rc = mwl8k_post_cmd(hw, &cmd->header);
4193         kfree(cmd);
4194
4195         return rc;
4196 }
4197
4198
4199 /*
4200  * Interrupt handling.
4201  */
4202 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4203 {
4204         struct ieee80211_hw *hw = dev_id;
4205         struct mwl8k_priv *priv = hw->priv;
4206         u32 status;
4207
4208         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4209         if (!status)
4210                 return IRQ_NONE;
4211
4212         if (status & MWL8K_A2H_INT_TX_DONE) {
4213                 status &= ~MWL8K_A2H_INT_TX_DONE;
4214                 tasklet_schedule(&priv->poll_tx_task);
4215         }
4216
4217         if (status & MWL8K_A2H_INT_RX_READY) {
4218                 status &= ~MWL8K_A2H_INT_RX_READY;
4219                 tasklet_schedule(&priv->poll_rx_task);
4220         }
4221
4222         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4223                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4224                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4225         }
4226
4227         if (status)
4228                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4229
4230         if (status & MWL8K_A2H_INT_OPC_DONE) {
4231                 if (priv->hostcmd_wait != NULL)
4232                         complete(priv->hostcmd_wait);
4233         }
4234
4235         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4236                 if (!mutex_is_locked(&priv->fw_mutex) &&
4237                     priv->radio_on && priv->pending_tx_pkts)
4238                         mwl8k_tx_start(priv);
4239         }
4240
4241         return IRQ_HANDLED;
4242 }
4243
4244 static void mwl8k_tx_poll(unsigned long data)
4245 {
4246         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4247         struct mwl8k_priv *priv = hw->priv;
4248         int limit;
4249         int i;
4250
4251         limit = 32;
4252
4253         spin_lock_bh(&priv->tx_lock);
4254
4255         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4256                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4257
4258         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4259                 complete(priv->tx_wait);
4260                 priv->tx_wait = NULL;
4261         }
4262
4263         spin_unlock_bh(&priv->tx_lock);
4264
4265         if (limit) {
4266                 writel(~MWL8K_A2H_INT_TX_DONE,
4267                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4268         } else {
4269                 tasklet_schedule(&priv->poll_tx_task);
4270         }
4271 }
4272
4273 static void mwl8k_rx_poll(unsigned long data)
4274 {
4275         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4276         struct mwl8k_priv *priv = hw->priv;
4277         int limit;
4278
4279         limit = 32;
4280         limit -= rxq_process(hw, 0, limit);
4281         limit -= rxq_refill(hw, 0, limit);
4282
4283         if (limit) {
4284                 writel(~MWL8K_A2H_INT_RX_READY,
4285                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4286         } else {
4287                 tasklet_schedule(&priv->poll_rx_task);
4288         }
4289 }
4290
4291
4292 /*
4293  * Core driver operations.
4294  */
4295 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4296 {
4297         struct mwl8k_priv *priv = hw->priv;
4298         int index = skb_get_queue_mapping(skb);
4299
4300         if (!priv->radio_on) {
4301                 wiphy_debug(hw->wiphy,
4302                             "dropped TX frame since radio disabled\n");
4303                 dev_kfree_skb(skb);
4304                 return;
4305         }
4306
4307         mwl8k_txq_xmit(hw, index, skb);
4308 }
4309
4310 static int mwl8k_start(struct ieee80211_hw *hw)
4311 {
4312         struct mwl8k_priv *priv = hw->priv;
4313         int rc;
4314
4315         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4316                          IRQF_SHARED, MWL8K_NAME, hw);
4317         if (rc) {
4318                 priv->irq = -1;
4319                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4320                 return -EIO;
4321         }
4322         priv->irq = priv->pdev->irq;
4323
4324         /* Enable TX reclaim and RX tasklets.  */
4325         tasklet_enable(&priv->poll_tx_task);
4326         tasklet_enable(&priv->poll_rx_task);
4327
4328         /* Enable interrupts */
4329         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4330         iowrite32(MWL8K_A2H_EVENTS,
4331                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4332
4333         rc = mwl8k_fw_lock(hw);
4334         if (!rc) {
4335                 rc = mwl8k_cmd_radio_enable(hw);
4336
4337                 if (!priv->ap_fw) {
4338                         if (!rc)
4339                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4340
4341                         if (!rc)
4342                                 rc = mwl8k_cmd_set_pre_scan(hw);
4343
4344                         if (!rc)
4345                                 rc = mwl8k_cmd_set_post_scan(hw,
4346                                                 "\x00\x00\x00\x00\x00\x00");
4347                 }
4348
4349                 if (!rc)
4350                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4351
4352                 if (!rc)
4353                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4354
4355                 mwl8k_fw_unlock(hw);
4356         }
4357
4358         if (rc) {
4359                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4360                 free_irq(priv->pdev->irq, hw);
4361                 priv->irq = -1;
4362                 tasklet_disable(&priv->poll_tx_task);
4363                 tasklet_disable(&priv->poll_rx_task);
4364         }
4365
4366         return rc;
4367 }
4368
4369 static void mwl8k_stop(struct ieee80211_hw *hw)
4370 {
4371         struct mwl8k_priv *priv = hw->priv;
4372         int i;
4373
4374         mwl8k_cmd_radio_disable(hw);
4375
4376         ieee80211_stop_queues(hw);
4377
4378         /* Disable interrupts */
4379         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4380         if (priv->irq != -1) {
4381                 free_irq(priv->pdev->irq, hw);
4382                 priv->irq = -1;
4383         }
4384
4385         /* Stop finalize join worker */
4386         cancel_work_sync(&priv->finalize_join_worker);
4387         cancel_work_sync(&priv->watchdog_ba_handle);
4388         if (priv->beacon_skb != NULL)
4389                 dev_kfree_skb(priv->beacon_skb);
4390
4391         /* Stop TX reclaim and RX tasklets.  */
4392         tasklet_disable(&priv->poll_tx_task);
4393         tasklet_disable(&priv->poll_rx_task);
4394
4395         /* Return all skbs to mac80211 */
4396         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4397                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4398 }
4399
4400 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4401
4402 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4403                                struct ieee80211_vif *vif)
4404 {
4405         struct mwl8k_priv *priv = hw->priv;
4406         struct mwl8k_vif *mwl8k_vif;
4407         u32 macids_supported;
4408         int macid, rc;
4409         struct mwl8k_device_info *di;
4410
4411         /*
4412          * Reject interface creation if sniffer mode is active, as
4413          * STA operation is mutually exclusive with hardware sniffer
4414          * mode.  (Sniffer mode is only used on STA firmware.)
4415          */
4416         if (priv->sniffer_enabled) {
4417                 wiphy_info(hw->wiphy,
4418                            "unable to create STA interface because sniffer mode is enabled\n");
4419                 return -EINVAL;
4420         }
4421
4422         di = priv->device_info;
4423         switch (vif->type) {
4424         case NL80211_IFTYPE_AP:
4425                 if (!priv->ap_fw && di->fw_image_ap) {
4426                         /* we must load the ap fw to meet this request */
4427                         if (!list_empty(&priv->vif_list))
4428                                 return -EBUSY;
4429                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4430                         if (rc)
4431                                 return rc;
4432                 }
4433                 macids_supported = priv->ap_macids_supported;
4434                 break;
4435         case NL80211_IFTYPE_STATION:
4436                 if (priv->ap_fw && di->fw_image_sta) {
4437                         /* we must load the sta fw to meet this request */
4438                         if (!list_empty(&priv->vif_list))
4439                                 return -EBUSY;
4440                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4441                         if (rc)
4442                                 return rc;
4443                 }
4444                 macids_supported = priv->sta_macids_supported;
4445                 break;
4446         default:
4447                 return -EINVAL;
4448         }
4449
4450         macid = ffs(macids_supported & ~priv->macids_used);
4451         if (!macid--)
4452                 return -EBUSY;
4453
4454         /* Setup driver private area. */
4455         mwl8k_vif = MWL8K_VIF(vif);
4456         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4457         mwl8k_vif->vif = vif;
4458         mwl8k_vif->macid = macid;
4459         mwl8k_vif->seqno = 0;
4460         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4461         mwl8k_vif->is_hw_crypto_enabled = false;
4462
4463         /* Set the mac address.  */
4464         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4465
4466         if (priv->ap_fw)
4467                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4468
4469         priv->macids_used |= 1 << mwl8k_vif->macid;
4470         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4471
4472         return 0;
4473 }
4474
4475 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4476                                    struct ieee80211_vif *vif)
4477 {
4478         struct mwl8k_priv *priv = hw->priv;
4479         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4480
4481         if (priv->ap_fw)
4482                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4483
4484         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4485
4486         priv->macids_used &= ~(1 << mwl8k_vif->macid);
4487         list_del(&mwl8k_vif->list);
4488 }
4489
4490 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4491 {
4492         struct ieee80211_conf *conf = &hw->conf;
4493         struct mwl8k_priv *priv = hw->priv;
4494         int rc;
4495
4496         if (conf->flags & IEEE80211_CONF_IDLE) {
4497                 mwl8k_cmd_radio_disable(hw);
4498                 return 0;
4499         }
4500
4501         rc = mwl8k_fw_lock(hw);
4502         if (rc)
4503                 return rc;
4504
4505         rc = mwl8k_cmd_radio_enable(hw);
4506         if (rc)
4507                 goto out;
4508
4509         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4510         if (rc)
4511                 goto out;
4512
4513         if (conf->power_level > 18)
4514                 conf->power_level = 18;
4515
4516         if (priv->ap_fw) {
4517
4518                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4519                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4520                         if (rc)
4521                                 goto out;
4522                 }
4523
4524                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4525                 if (rc)
4526                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4527                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4528                 if (rc)
4529                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4530
4531         } else {
4532                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4533                 if (rc)
4534                         goto out;
4535                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4536         }
4537
4538 out:
4539         mwl8k_fw_unlock(hw);
4540
4541         return rc;
4542 }
4543
4544 static void
4545 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4546                            struct ieee80211_bss_conf *info, u32 changed)
4547 {
4548         struct mwl8k_priv *priv = hw->priv;
4549         u32 ap_legacy_rates = 0;
4550         u8 ap_mcs_rates[16];
4551         int rc;
4552
4553         if (mwl8k_fw_lock(hw))
4554                 return;
4555
4556         /*
4557          * No need to capture a beacon if we're no longer associated.
4558          */
4559         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4560                 priv->capture_beacon = false;
4561
4562         /*
4563          * Get the AP's legacy and MCS rates.
4564          */
4565         if (vif->bss_conf.assoc) {
4566                 struct ieee80211_sta *ap;
4567
4568                 rcu_read_lock();
4569
4570                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4571                 if (ap == NULL) {
4572                         rcu_read_unlock();
4573                         goto out;
4574                 }
4575
4576                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4577                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4578                 } else {
4579                         ap_legacy_rates =
4580                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4581                 }
4582                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4583
4584                 rcu_read_unlock();
4585         }
4586
4587         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4588                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4589                 if (rc)
4590                         goto out;
4591
4592                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4593                 if (rc)
4594                         goto out;
4595         }
4596
4597         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4598                 rc = mwl8k_set_radio_preamble(hw,
4599                                 vif->bss_conf.use_short_preamble);
4600                 if (rc)
4601                         goto out;
4602         }
4603
4604         if (changed & BSS_CHANGED_ERP_SLOT) {
4605                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4606                 if (rc)
4607                         goto out;
4608         }
4609
4610         if (vif->bss_conf.assoc &&
4611             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4612                         BSS_CHANGED_HT))) {
4613                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4614                 if (rc)
4615                         goto out;
4616         }
4617
4618         if (vif->bss_conf.assoc &&
4619             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4620                 /*
4621                  * Finalize the join.  Tell rx handler to process
4622                  * next beacon from our BSSID.
4623                  */
4624                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4625                 priv->capture_beacon = true;
4626         }
4627
4628 out:
4629         mwl8k_fw_unlock(hw);
4630 }
4631
4632 static void
4633 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4634                           struct ieee80211_bss_conf *info, u32 changed)
4635 {
4636         int rc;
4637
4638         if (mwl8k_fw_lock(hw))
4639                 return;
4640
4641         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4642                 rc = mwl8k_set_radio_preamble(hw,
4643                                 vif->bss_conf.use_short_preamble);
4644                 if (rc)
4645                         goto out;
4646         }
4647
4648         if (changed & BSS_CHANGED_BASIC_RATES) {
4649                 int idx;
4650                 int rate;
4651
4652                 /*
4653                  * Use lowest supported basic rate for multicasts
4654                  * and management frames (such as probe responses --
4655                  * beacons will always go out at 1 Mb/s).
4656                  */
4657                 idx = ffs(vif->bss_conf.basic_rates);
4658                 if (idx)
4659                         idx--;
4660
4661                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4662                         rate = mwl8k_rates_24[idx].hw_value;
4663                 else
4664                         rate = mwl8k_rates_50[idx].hw_value;
4665
4666                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4667         }
4668
4669         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4670                 struct sk_buff *skb;
4671
4672                 skb = ieee80211_beacon_get(hw, vif);
4673                 if (skb != NULL) {
4674                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4675                         kfree_skb(skb);
4676                 }
4677         }
4678
4679         if (changed & BSS_CHANGED_BEACON_ENABLED)
4680                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4681
4682 out:
4683         mwl8k_fw_unlock(hw);
4684 }
4685
4686 static void
4687 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4688                        struct ieee80211_bss_conf *info, u32 changed)
4689 {
4690         struct mwl8k_priv *priv = hw->priv;
4691
4692         if (!priv->ap_fw)
4693                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4694         else
4695                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4696 }
4697
4698 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4699                                    struct netdev_hw_addr_list *mc_list)
4700 {
4701         struct mwl8k_cmd_pkt *cmd;
4702
4703         /*
4704          * Synthesize and return a command packet that programs the
4705          * hardware multicast address filter.  At this point we don't
4706          * know whether FIF_ALLMULTI is being requested, but if it is,
4707          * we'll end up throwing this packet away and creating a new
4708          * one in mwl8k_configure_filter().
4709          */
4710         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4711
4712         return (unsigned long)cmd;
4713 }
4714
4715 static int
4716 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4717                                unsigned int changed_flags,
4718                                unsigned int *total_flags)
4719 {
4720         struct mwl8k_priv *priv = hw->priv;
4721
4722         /*
4723          * Hardware sniffer mode is mutually exclusive with STA
4724          * operation, so refuse to enable sniffer mode if a STA
4725          * interface is active.
4726          */
4727         if (!list_empty(&priv->vif_list)) {
4728                 if (net_ratelimit())
4729                         wiphy_info(hw->wiphy,
4730                                    "not enabling sniffer mode because STA interface is active\n");
4731                 return 0;
4732         }
4733
4734         if (!priv->sniffer_enabled) {
4735                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4736                         return 0;
4737                 priv->sniffer_enabled = true;
4738         }
4739
4740         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4741                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4742                         FIF_OTHER_BSS;
4743
4744         return 1;
4745 }
4746
4747 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4748 {
4749         if (!list_empty(&priv->vif_list))
4750                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4751
4752         return NULL;
4753 }
4754
4755 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4756                                    unsigned int changed_flags,
4757                                    unsigned int *total_flags,
4758                                    u64 multicast)
4759 {
4760         struct mwl8k_priv *priv = hw->priv;
4761         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4762
4763         /*
4764          * AP firmware doesn't allow fine-grained control over
4765          * the receive filter.
4766          */
4767         if (priv->ap_fw) {
4768                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4769                 kfree(cmd);
4770                 return;
4771         }
4772
4773         /*
4774          * Enable hardware sniffer mode if FIF_CONTROL or
4775          * FIF_OTHER_BSS is requested.
4776          */
4777         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4778             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4779                 kfree(cmd);
4780                 return;
4781         }
4782
4783         /* Clear unsupported feature flags */
4784         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4785
4786         if (mwl8k_fw_lock(hw)) {
4787                 kfree(cmd);
4788                 return;
4789         }
4790
4791         if (priv->sniffer_enabled) {
4792                 mwl8k_cmd_enable_sniffer(hw, 0);
4793                 priv->sniffer_enabled = false;
4794         }
4795
4796         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4797                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4798                         /*
4799                          * Disable the BSS filter.
4800                          */
4801                         mwl8k_cmd_set_pre_scan(hw);
4802                 } else {
4803                         struct mwl8k_vif *mwl8k_vif;
4804                         const u8 *bssid;
4805
4806                         /*
4807                          * Enable the BSS filter.
4808                          *
4809                          * If there is an active STA interface, use that
4810                          * interface's BSSID, otherwise use a dummy one
4811                          * (where the OUI part needs to be nonzero for
4812                          * the BSSID to be accepted by POST_SCAN).
4813                          */
4814                         mwl8k_vif = mwl8k_first_vif(priv);
4815                         if (mwl8k_vif != NULL)
4816                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4817                         else
4818                                 bssid = "\x01\x00\x00\x00\x00\x00";
4819
4820                         mwl8k_cmd_set_post_scan(hw, bssid);
4821                 }
4822         }
4823
4824         /*
4825          * If FIF_ALLMULTI is being requested, throw away the command
4826          * packet that ->prepare_multicast() built and replace it with
4827          * a command packet that enables reception of all multicast
4828          * packets.
4829          */
4830         if (*total_flags & FIF_ALLMULTI) {
4831                 kfree(cmd);
4832                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4833         }
4834
4835         if (cmd != NULL) {
4836                 mwl8k_post_cmd(hw, cmd);
4837                 kfree(cmd);
4838         }
4839
4840         mwl8k_fw_unlock(hw);
4841 }
4842
4843 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4844 {
4845         return mwl8k_cmd_set_rts_threshold(hw, value);
4846 }
4847
4848 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4849                             struct ieee80211_vif *vif,
4850                             struct ieee80211_sta *sta)
4851 {
4852         struct mwl8k_priv *priv = hw->priv;
4853
4854         if (priv->ap_fw)
4855                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4856         else
4857                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4858 }
4859
4860 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4861                          struct ieee80211_vif *vif,
4862                          struct ieee80211_sta *sta)
4863 {
4864         struct mwl8k_priv *priv = hw->priv;
4865         int ret;
4866         int i;
4867         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4868         struct ieee80211_key_conf *key;
4869
4870         if (!priv->ap_fw) {
4871                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4872                 if (ret >= 0) {
4873                         MWL8K_STA(sta)->peer_id = ret;
4874                         if (sta->ht_cap.ht_supported)
4875                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
4876                         ret = 0;
4877                 }
4878
4879         } else {
4880                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4881         }
4882
4883         for (i = 0; i < NUM_WEP_KEYS; i++) {
4884                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4885                 if (mwl8k_vif->wep_key_conf[i].enabled)
4886                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4887         }
4888         return ret;
4889 }
4890
4891 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4892                          const struct ieee80211_tx_queue_params *params)
4893 {
4894         struct mwl8k_priv *priv = hw->priv;
4895         int rc;
4896
4897         rc = mwl8k_fw_lock(hw);
4898         if (!rc) {
4899                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4900                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4901
4902                 if (!priv->wmm_enabled)
4903                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4904
4905                 if (!rc) {
4906                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4907                         rc = mwl8k_cmd_set_edca_params(hw, q,
4908                                                        params->cw_min,
4909                                                        params->cw_max,
4910                                                        params->aifs,
4911                                                        params->txop);
4912                 }
4913
4914                 mwl8k_fw_unlock(hw);
4915         }
4916
4917         return rc;
4918 }
4919
4920 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4921                            struct ieee80211_low_level_stats *stats)
4922 {
4923         return mwl8k_cmd_get_stat(hw, stats);
4924 }
4925
4926 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4927                                 struct survey_info *survey)
4928 {
4929         struct mwl8k_priv *priv = hw->priv;
4930         struct ieee80211_conf *conf = &hw->conf;
4931
4932         if (idx != 0)
4933                 return -ENOENT;
4934
4935         survey->channel = conf->channel;
4936         survey->filled = SURVEY_INFO_NOISE_DBM;
4937         survey->noise = priv->noise;
4938
4939         return 0;
4940 }
4941
4942 #define MAX_AMPDU_ATTEMPTS 5
4943
4944 static int
4945 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4946                    enum ieee80211_ampdu_mlme_action action,
4947                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4948                    u8 buf_size)
4949 {
4950
4951         int i, rc = 0;
4952         struct mwl8k_priv *priv = hw->priv;
4953         struct mwl8k_ampdu_stream *stream;
4954         u8 *addr = sta->addr;
4955
4956         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4957                 return -ENOTSUPP;
4958
4959         spin_lock(&priv->stream_lock);
4960         stream = mwl8k_lookup_stream(hw, addr, tid);
4961
4962         switch (action) {
4963         case IEEE80211_AMPDU_RX_START:
4964         case IEEE80211_AMPDU_RX_STOP:
4965                 break;
4966         case IEEE80211_AMPDU_TX_START:
4967                 /* By the time we get here the hw queues may contain outgoing
4968                  * packets for this RA/TID that are not part of this BA
4969                  * session.  The hw will assign sequence numbers to these
4970                  * packets as they go out.  So if we query the hw for its next
4971                  * sequence number and use that for the SSN here, it may end up
4972                  * being wrong, which will lead to sequence number mismatch at
4973                  * the recipient.  To avoid this, we reset the sequence number
4974                  * to O for the first MPDU in this BA stream.
4975                  */
4976                 *ssn = 0;
4977                 if (stream == NULL) {
4978                         /* This means that somebody outside this driver called
4979                          * ieee80211_start_tx_ba_session.  This is unexpected
4980                          * because we do our own rate control.  Just warn and
4981                          * move on.
4982                          */
4983                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
4984                                    "Proceeding anyway.\n", __func__);
4985                         stream = mwl8k_add_stream(hw, sta, tid);
4986                 }
4987                 if (stream == NULL) {
4988                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
4989                         rc = -EBUSY;
4990                         break;
4991                 }
4992                 stream->state = AMPDU_STREAM_IN_PROGRESS;
4993
4994                 /* Release the lock before we do the time consuming stuff */
4995                 spin_unlock(&priv->stream_lock);
4996                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
4997                         rc = mwl8k_check_ba(hw, stream);
4998
4999                         if (!rc)
5000                                 break;
5001                         /*
5002                          * HW queues take time to be flushed, give them
5003                          * sufficient time
5004                          */
5005
5006                         msleep(1000);
5007                 }
5008                 spin_lock(&priv->stream_lock);
5009                 if (rc) {
5010                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5011                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5012                         mwl8k_remove_stream(hw, stream);
5013                         rc = -EBUSY;
5014                         break;
5015                 }
5016                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5017                 break;
5018         case IEEE80211_AMPDU_TX_STOP:
5019                 if (stream == NULL)
5020                         break;
5021                 if (stream->state == AMPDU_STREAM_ACTIVE) {
5022                         spin_unlock(&priv->stream_lock);
5023                         mwl8k_destroy_ba(hw, stream);
5024                         spin_lock(&priv->stream_lock);
5025                 }
5026                 mwl8k_remove_stream(hw, stream);
5027                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5028                 break;
5029         case IEEE80211_AMPDU_TX_OPERATIONAL:
5030                 BUG_ON(stream == NULL);
5031                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5032                 spin_unlock(&priv->stream_lock);
5033                 rc = mwl8k_create_ba(hw, stream, buf_size);
5034                 spin_lock(&priv->stream_lock);
5035                 if (!rc)
5036                         stream->state = AMPDU_STREAM_ACTIVE;
5037                 else {
5038                         spin_unlock(&priv->stream_lock);
5039                         mwl8k_destroy_ba(hw, stream);
5040                         spin_lock(&priv->stream_lock);
5041                         wiphy_debug(hw->wiphy,
5042                                 "Failed adding stream for sta %pM tid %d\n",
5043                                 addr, tid);
5044                         mwl8k_remove_stream(hw, stream);
5045                 }
5046                 break;
5047
5048         default:
5049                 rc = -ENOTSUPP;
5050         }
5051
5052         spin_unlock(&priv->stream_lock);
5053         return rc;
5054 }
5055
5056 static const struct ieee80211_ops mwl8k_ops = {
5057         .tx                     = mwl8k_tx,
5058         .start                  = mwl8k_start,
5059         .stop                   = mwl8k_stop,
5060         .add_interface          = mwl8k_add_interface,
5061         .remove_interface       = mwl8k_remove_interface,
5062         .config                 = mwl8k_config,
5063         .bss_info_changed       = mwl8k_bss_info_changed,
5064         .prepare_multicast      = mwl8k_prepare_multicast,
5065         .configure_filter       = mwl8k_configure_filter,
5066         .set_key                = mwl8k_set_key,
5067         .set_rts_threshold      = mwl8k_set_rts_threshold,
5068         .sta_add                = mwl8k_sta_add,
5069         .sta_remove             = mwl8k_sta_remove,
5070         .conf_tx                = mwl8k_conf_tx,
5071         .get_stats              = mwl8k_get_stats,
5072         .get_survey             = mwl8k_get_survey,
5073         .ampdu_action           = mwl8k_ampdu_action,
5074 };
5075
5076 static void mwl8k_finalize_join_worker(struct work_struct *work)
5077 {
5078         struct mwl8k_priv *priv =
5079                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5080         struct sk_buff *skb = priv->beacon_skb;
5081         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5082         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5083         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5084                                          mgmt->u.beacon.variable, len);
5085         int dtim_period = 1;
5086
5087         if (tim && tim[1] >= 2)
5088                 dtim_period = tim[3];
5089
5090         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5091
5092         dev_kfree_skb(skb);
5093         priv->beacon_skb = NULL;
5094 }
5095
5096 enum {
5097         MWL8363 = 0,
5098         MWL8687,
5099         MWL8366,
5100 };
5101
5102 #define MWL8K_8366_AP_FW_API 2
5103 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5104 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5105
5106 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5107         [MWL8363] = {
5108                 .part_name      = "88w8363",
5109                 .helper_image   = "mwl8k/helper_8363.fw",
5110                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5111         },
5112         [MWL8687] = {
5113                 .part_name      = "88w8687",
5114                 .helper_image   = "mwl8k/helper_8687.fw",
5115                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5116         },
5117         [MWL8366] = {
5118                 .part_name      = "88w8366",
5119                 .helper_image   = "mwl8k/helper_8366.fw",
5120                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5121                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5122                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5123                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5124         },
5125 };
5126
5127 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5128 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5129 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5130 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5131 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5132 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5133 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5134
5135 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5136         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5137         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5138         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5139         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5140         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5141         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5142         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5143         { },
5144 };
5145 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5146
5147 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5148 {
5149         int rc;
5150         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5151                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5152                priv->fw_pref, priv->fw_alt);
5153         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5154         if (rc) {
5155                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5156                        pci_name(priv->pdev), priv->fw_alt);
5157                 return rc;
5158         }
5159         return 0;
5160 }
5161
5162 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5163 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5164 {
5165         struct mwl8k_priv *priv = context;
5166         struct mwl8k_device_info *di = priv->device_info;
5167         int rc;
5168
5169         switch (priv->fw_state) {
5170         case FW_STATE_INIT:
5171                 if (!fw) {
5172                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5173                                pci_name(priv->pdev), di->helper_image);
5174                         goto fail;
5175                 }
5176                 priv->fw_helper = fw;
5177                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5178                                       true);
5179                 if (rc && priv->fw_alt) {
5180                         rc = mwl8k_request_alt_fw(priv);
5181                         if (rc)
5182                                 goto fail;
5183                         priv->fw_state = FW_STATE_LOADING_ALT;
5184                 } else if (rc)
5185                         goto fail;
5186                 else
5187                         priv->fw_state = FW_STATE_LOADING_PREF;
5188                 break;
5189
5190         case FW_STATE_LOADING_PREF:
5191                 if (!fw) {
5192                         if (priv->fw_alt) {
5193                                 rc = mwl8k_request_alt_fw(priv);
5194                                 if (rc)
5195                                         goto fail;
5196                                 priv->fw_state = FW_STATE_LOADING_ALT;
5197                         } else
5198                                 goto fail;
5199                 } else {
5200                         priv->fw_ucode = fw;
5201                         rc = mwl8k_firmware_load_success(priv);
5202                         if (rc)
5203                                 goto fail;
5204                         else
5205                                 complete(&priv->firmware_loading_complete);
5206                 }
5207                 break;
5208
5209         case FW_STATE_LOADING_ALT:
5210                 if (!fw) {
5211                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5212                                pci_name(priv->pdev), di->helper_image);
5213                         goto fail;
5214                 }
5215                 priv->fw_ucode = fw;
5216                 rc = mwl8k_firmware_load_success(priv);
5217                 if (rc)
5218                         goto fail;
5219                 else
5220                         complete(&priv->firmware_loading_complete);
5221                 break;
5222
5223         default:
5224                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5225                        MWL8K_NAME, priv->fw_state);
5226                 BUG_ON(1);
5227         }
5228
5229         return;
5230
5231 fail:
5232         priv->fw_state = FW_STATE_ERROR;
5233         complete(&priv->firmware_loading_complete);
5234         device_release_driver(&priv->pdev->dev);
5235         mwl8k_release_firmware(priv);
5236 }
5237
5238 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5239                                bool nowait)
5240 {
5241         struct mwl8k_priv *priv = hw->priv;
5242         int rc;
5243
5244         /* Reset firmware and hardware */
5245         mwl8k_hw_reset(priv);
5246
5247         /* Ask userland hotplug daemon for the device firmware */
5248         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5249         if (rc) {
5250                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5251                 return rc;
5252         }
5253
5254         if (nowait)
5255                 return rc;
5256
5257         /* Load firmware into hardware */
5258         rc = mwl8k_load_firmware(hw);
5259         if (rc)
5260                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5261
5262         /* Reclaim memory once firmware is successfully loaded */
5263         mwl8k_release_firmware(priv);
5264
5265         return rc;
5266 }
5267
5268 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5269 {
5270         struct mwl8k_priv *priv = hw->priv;
5271         int rc = 0;
5272         int i;
5273
5274         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5275                 rc = mwl8k_txq_init(hw, i);
5276                 if (rc)
5277                         break;
5278                 if (priv->ap_fw)
5279                         iowrite32(priv->txq[i].txd_dma,
5280                                   priv->sram + priv->txq_offset[i]);
5281         }
5282         return rc;
5283 }
5284
5285 /* initialize hw after successfully loading a firmware image */
5286 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5287 {
5288         struct mwl8k_priv *priv = hw->priv;
5289         int rc = 0;
5290         int i;
5291
5292         if (priv->ap_fw) {
5293                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5294                 if (priv->rxd_ops == NULL) {
5295                         wiphy_err(hw->wiphy,
5296                                   "Driver does not have AP firmware image support for this hardware\n");
5297                         goto err_stop_firmware;
5298                 }
5299         } else {
5300                 priv->rxd_ops = &rxd_sta_ops;
5301         }
5302
5303         priv->sniffer_enabled = false;
5304         priv->wmm_enabled = false;
5305         priv->pending_tx_pkts = 0;
5306
5307         rc = mwl8k_rxq_init(hw, 0);
5308         if (rc)
5309                 goto err_stop_firmware;
5310         rxq_refill(hw, 0, INT_MAX);
5311
5312         /* For the sta firmware, we need to know the dma addresses of tx queues
5313          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5314          * prior to issuing this command.  But for the AP case, we learn the
5315          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5316          * case we must initialize the tx queues after.
5317          */
5318         priv->num_ampdu_queues = 0;
5319         if (!priv->ap_fw) {
5320                 rc = mwl8k_init_txqs(hw);
5321                 if (rc)
5322                         goto err_free_queues;
5323         }
5324
5325         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5326         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5327         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5328                   MWL8K_A2H_INT_BA_WATCHDOG,
5329                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5330         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5331                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5332
5333         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5334                          IRQF_SHARED, MWL8K_NAME, hw);
5335         if (rc) {
5336                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5337                 goto err_free_queues;
5338         }
5339
5340         memset(priv->ampdu, 0, sizeof(priv->ampdu));
5341
5342         /*
5343          * Temporarily enable interrupts.  Initial firmware host
5344          * commands use interrupts and avoid polling.  Disable
5345          * interrupts when done.
5346          */
5347         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5348
5349         /* Get config data, mac addrs etc */
5350         if (priv->ap_fw) {
5351                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5352                 if (!rc)
5353                         rc = mwl8k_init_txqs(hw);
5354                 if (!rc)
5355                         rc = mwl8k_cmd_set_hw_spec(hw);
5356         } else {
5357                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5358         }
5359         if (rc) {
5360                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5361                 goto err_free_irq;
5362         }
5363
5364         /* Turn radio off */
5365         rc = mwl8k_cmd_radio_disable(hw);
5366         if (rc) {
5367                 wiphy_err(hw->wiphy, "Cannot disable\n");
5368                 goto err_free_irq;
5369         }
5370
5371         /* Clear MAC address */
5372         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5373         if (rc) {
5374                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5375                 goto err_free_irq;
5376         }
5377
5378         /* Disable interrupts */
5379         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5380         free_irq(priv->pdev->irq, hw);
5381
5382         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5383                    priv->device_info->part_name,
5384                    priv->hw_rev, hw->wiphy->perm_addr,
5385                    priv->ap_fw ? "AP" : "STA",
5386                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5387                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5388
5389         return 0;
5390
5391 err_free_irq:
5392         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5393         free_irq(priv->pdev->irq, hw);
5394
5395 err_free_queues:
5396         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5397                 mwl8k_txq_deinit(hw, i);
5398         mwl8k_rxq_deinit(hw, 0);
5399
5400 err_stop_firmware:
5401         mwl8k_hw_reset(priv);
5402
5403         return rc;
5404 }
5405
5406 /*
5407  * invoke mwl8k_reload_firmware to change the firmware image after the device
5408  * has already been registered
5409  */
5410 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5411 {
5412         int i, rc = 0;
5413         struct mwl8k_priv *priv = hw->priv;
5414
5415         mwl8k_stop(hw);
5416         mwl8k_rxq_deinit(hw, 0);
5417
5418         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5419                 mwl8k_txq_deinit(hw, i);
5420
5421         rc = mwl8k_init_firmware(hw, fw_image, false);
5422         if (rc)
5423                 goto fail;
5424
5425         rc = mwl8k_probe_hw(hw);
5426         if (rc)
5427                 goto fail;
5428
5429         rc = mwl8k_start(hw);
5430         if (rc)
5431                 goto fail;
5432
5433         rc = mwl8k_config(hw, ~0);
5434         if (rc)
5435                 goto fail;
5436
5437         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5438                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5439                 if (rc)
5440                         goto fail;
5441         }
5442
5443         return rc;
5444
5445 fail:
5446         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5447         return rc;
5448 }
5449
5450 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5451 {
5452         struct ieee80211_hw *hw = priv->hw;
5453         int i, rc;
5454
5455         rc = mwl8k_load_firmware(hw);
5456         mwl8k_release_firmware(priv);
5457         if (rc) {
5458                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5459                 return rc;
5460         }
5461
5462         /*
5463          * Extra headroom is the size of the required DMA header
5464          * minus the size of the smallest 802.11 frame (CTS frame).
5465          */
5466         hw->extra_tx_headroom =
5467                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5468
5469         hw->channel_change_time = 10;
5470
5471         hw->queues = MWL8K_TX_WMM_QUEUES;
5472
5473         /* Set rssi values to dBm */
5474         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5475         hw->vif_data_size = sizeof(struct mwl8k_vif);
5476         hw->sta_data_size = sizeof(struct mwl8k_sta);
5477
5478         priv->macids_used = 0;
5479         INIT_LIST_HEAD(&priv->vif_list);
5480
5481         /* Set default radio state and preamble */
5482         priv->radio_on = 0;
5483         priv->radio_short_preamble = 0;
5484
5485         /* Finalize join worker */
5486         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5487         /* Handle watchdog ba events */
5488         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5489
5490         /* TX reclaim and RX tasklets.  */
5491         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5492         tasklet_disable(&priv->poll_tx_task);
5493         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5494         tasklet_disable(&priv->poll_rx_task);
5495
5496         /* Power management cookie */
5497         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5498         if (priv->cookie == NULL)
5499                 return -ENOMEM;
5500
5501         mutex_init(&priv->fw_mutex);
5502         priv->fw_mutex_owner = NULL;
5503         priv->fw_mutex_depth = 0;
5504         priv->hostcmd_wait = NULL;
5505
5506         spin_lock_init(&priv->tx_lock);
5507
5508         spin_lock_init(&priv->stream_lock);
5509
5510         priv->tx_wait = NULL;
5511
5512         rc = mwl8k_probe_hw(hw);
5513         if (rc)
5514                 goto err_free_cookie;
5515
5516         hw->wiphy->interface_modes = 0;
5517         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5518                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5519         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5520                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5521
5522         rc = ieee80211_register_hw(hw);
5523         if (rc) {
5524                 wiphy_err(hw->wiphy, "Cannot register device\n");
5525                 goto err_unprobe_hw;
5526         }
5527
5528         return 0;
5529
5530 err_unprobe_hw:
5531         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5532                 mwl8k_txq_deinit(hw, i);
5533         mwl8k_rxq_deinit(hw, 0);
5534
5535 err_free_cookie:
5536         if (priv->cookie != NULL)
5537                 pci_free_consistent(priv->pdev, 4,
5538                                 priv->cookie, priv->cookie_dma);
5539
5540         return rc;
5541 }
5542 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5543                                  const struct pci_device_id *id)
5544 {
5545         static int printed_version;
5546         struct ieee80211_hw *hw;
5547         struct mwl8k_priv *priv;
5548         struct mwl8k_device_info *di;
5549         int rc;
5550
5551         if (!printed_version) {
5552                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5553                 printed_version = 1;
5554         }
5555
5556
5557         rc = pci_enable_device(pdev);
5558         if (rc) {
5559                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5560                        MWL8K_NAME);
5561                 return rc;
5562         }
5563
5564         rc = pci_request_regions(pdev, MWL8K_NAME);
5565         if (rc) {
5566                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5567                        MWL8K_NAME);
5568                 goto err_disable_device;
5569         }
5570
5571         pci_set_master(pdev);
5572
5573
5574         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5575         if (hw == NULL) {
5576                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5577                 rc = -ENOMEM;
5578                 goto err_free_reg;
5579         }
5580
5581         SET_IEEE80211_DEV(hw, &pdev->dev);
5582         pci_set_drvdata(pdev, hw);
5583
5584         priv = hw->priv;
5585         priv->hw = hw;
5586         priv->pdev = pdev;
5587         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5588
5589
5590         priv->sram = pci_iomap(pdev, 0, 0x10000);
5591         if (priv->sram == NULL) {
5592                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5593                 goto err_iounmap;
5594         }
5595
5596         /*
5597          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5598          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5599          */
5600         priv->regs = pci_iomap(pdev, 1, 0x10000);
5601         if (priv->regs == NULL) {
5602                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5603                 if (priv->regs == NULL) {
5604                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5605                         goto err_iounmap;
5606                 }
5607         }
5608
5609         /*
5610          * Choose the initial fw image depending on user input.  If a second
5611          * image is available, make it the alternative image that will be
5612          * loaded if the first one fails.
5613          */
5614         init_completion(&priv->firmware_loading_complete);
5615         di = priv->device_info;
5616         if (ap_mode_default && di->fw_image_ap) {
5617                 priv->fw_pref = di->fw_image_ap;
5618                 priv->fw_alt = di->fw_image_sta;
5619         } else if (!ap_mode_default && di->fw_image_sta) {
5620                 priv->fw_pref = di->fw_image_sta;
5621                 priv->fw_alt = di->fw_image_ap;
5622         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5623                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5624                 priv->fw_pref = di->fw_image_sta;
5625         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5626                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5627                 priv->fw_pref = di->fw_image_ap;
5628         }
5629         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5630         if (rc)
5631                 goto err_stop_firmware;
5632         return rc;
5633
5634 err_stop_firmware:
5635         mwl8k_hw_reset(priv);
5636
5637 err_iounmap:
5638         if (priv->regs != NULL)
5639                 pci_iounmap(pdev, priv->regs);
5640
5641         if (priv->sram != NULL)
5642                 pci_iounmap(pdev, priv->sram);
5643
5644         pci_set_drvdata(pdev, NULL);
5645         ieee80211_free_hw(hw);
5646
5647 err_free_reg:
5648         pci_release_regions(pdev);
5649
5650 err_disable_device:
5651         pci_disable_device(pdev);
5652
5653         return rc;
5654 }
5655
5656 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5657 {
5658         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5659 }
5660
5661 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5662 {
5663         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5664         struct mwl8k_priv *priv;
5665         int i;
5666
5667         if (hw == NULL)
5668                 return;
5669         priv = hw->priv;
5670
5671         wait_for_completion(&priv->firmware_loading_complete);
5672
5673         if (priv->fw_state == FW_STATE_ERROR) {
5674                 mwl8k_hw_reset(priv);
5675                 goto unmap;
5676         }
5677
5678         ieee80211_stop_queues(hw);
5679
5680         ieee80211_unregister_hw(hw);
5681
5682         /* Remove TX reclaim and RX tasklets.  */
5683         tasklet_kill(&priv->poll_tx_task);
5684         tasklet_kill(&priv->poll_rx_task);
5685
5686         /* Stop hardware */
5687         mwl8k_hw_reset(priv);
5688
5689         /* Return all skbs to mac80211 */
5690         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5691                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5692
5693         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5694                 mwl8k_txq_deinit(hw, i);
5695
5696         mwl8k_rxq_deinit(hw, 0);
5697
5698         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5699
5700 unmap:
5701         pci_iounmap(pdev, priv->regs);
5702         pci_iounmap(pdev, priv->sram);
5703         pci_set_drvdata(pdev, NULL);
5704         ieee80211_free_hw(hw);
5705         pci_release_regions(pdev);
5706         pci_disable_device(pdev);
5707 }
5708
5709 static struct pci_driver mwl8k_driver = {
5710         .name           = MWL8K_NAME,
5711         .id_table       = mwl8k_pci_id_table,
5712         .probe          = mwl8k_probe,
5713         .remove         = __devexit_p(mwl8k_remove),
5714         .shutdown       = __devexit_p(mwl8k_shutdown),
5715 };
5716
5717 static int __init mwl8k_init(void)
5718 {
5719         return pci_register_driver(&mwl8k_driver);
5720 }
5721
5722 static void __exit mwl8k_exit(void)
5723 {
5724         pci_unregister_driver(&mwl8k_driver);
5725 }
5726
5727 module_init(mwl8k_init);
5728 module_exit(mwl8k_exit);
5729
5730 MODULE_DESCRIPTION(MWL8K_DESC);
5731 MODULE_VERSION(MWL8K_VERSION);
5732 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5733 MODULE_LICENSE("GPL");