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 /* HW micro second timer register
  78  * located at offset 0xA600. This
  79  * will be used to timestamp tx
  80  * packets.
  81  */
  82
  83 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  84
  85 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  86                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  87                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  88                                  MWL8K_A2H_INT_RADAR_DETECT | \
  89                                  MWL8K_A2H_INT_RADIO_ON | \
  90                                  MWL8K_A2H_INT_RADIO_OFF | \
  91                                  MWL8K_A2H_INT_MAC_EVENT | \
  92                                  MWL8K_A2H_INT_OPC_DONE | \
  93                                  MWL8K_A2H_INT_RX_READY | \
  94                                  MWL8K_A2H_INT_TX_DONE | \
  95                                  MWL8K_A2H_INT_BA_WATCHDOG)
  96
  97 #define MWL8K_RX_QUEUES         1
  98 #define MWL8K_TX_WMM_QUEUES     4
  99 #define MWL8K_MAX_AMPDU_QUEUES  8
 100 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 101 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 102
 103 struct rxd_ops {
 104         int rxd_size;
 105         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 106         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 107         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 108                            __le16 *qos, s8 *noise);
 109 };
 110
 111 struct mwl8k_device_info {
 112         char *part_name;
 113         char *helper_image;
 114         char *fw_image_sta;
 115         char *fw_image_ap;
 116         struct rxd_ops *ap_rxd_ops;
 117         u32 fw_api_ap;
 118 };
 119
 120 struct mwl8k_rx_queue {
 121         int rxd_count;
 122
 123         /* hw receives here */
 124         int head;
 125
 126         /* refill descs here */
 127         int tail;
 128
 129         void *rxd;
 130         dma_addr_t rxd_dma;
 131         struct {
 132                 struct sk_buff *skb;
 133                 DEFINE_DMA_UNMAP_ADDR(dma);
 134         } *buf;
 135 };
 136
 137 struct mwl8k_tx_queue {
 138         /* hw transmits here */
 139         int head;
 140
 141         /* sw appends here */
 142         int tail;
 143
 144         unsigned int len;
 145         struct mwl8k_tx_desc *txd;
 146         dma_addr_t txd_dma;
 147         struct sk_buff **skb;
 148 };
 149
 150 enum {
 151         AMPDU_NO_STREAM,
 152         AMPDU_STREAM_NEW,
 153         AMPDU_STREAM_IN_PROGRESS,
 154         AMPDU_STREAM_ACTIVE,
 155 };
 156
 157 struct mwl8k_ampdu_stream {
 158         struct ieee80211_sta *sta;
 159         u8 tid;
 160         u8 state;
 161         u8 idx;
 162         u8 txq_idx; /* index of this stream in priv->txq */
 163 };
 164
 165 struct mwl8k_priv {
 166         struct ieee80211_hw *hw;
 167         struct pci_dev *pdev;
 168         int irq;
 169
 170         struct mwl8k_device_info *device_info;
 171
 172         void __iomem *sram;
 173         void __iomem *regs;
 174
 175         /* firmware */
 176         const struct firmware *fw_helper;
 177         const struct firmware *fw_ucode;
 178
 179         /* hardware/firmware parameters */
 180         bool ap_fw;
 181         struct rxd_ops *rxd_ops;
 182         struct ieee80211_supported_band band_24;
 183         struct ieee80211_channel channels_24[14];
 184         struct ieee80211_rate rates_24[14];
 185         struct ieee80211_supported_band band_50;
 186         struct ieee80211_channel channels_50[4];
 187         struct ieee80211_rate rates_50[9];
 188         u32 ap_macids_supported;
 189         u32 sta_macids_supported;
 190
 191         /* Ampdu stream information */
 192         u8 num_ampdu_queues;
 193         spinlock_t stream_lock;
 194         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 195         struct work_struct watchdog_ba_handle;
 196
 197         /* firmware access */
 198         struct mutex fw_mutex;
 199         struct task_struct *fw_mutex_owner;
 200         int fw_mutex_depth;
 201         struct completion *hostcmd_wait;
 202
 203         /* lock held over TX and TX reap */
 204         spinlock_t tx_lock;
 205
 206         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 207         struct completion *tx_wait;
 208
 209         /* List of interfaces.  */
 210         u32 macids_used;
 211         struct list_head vif_list;
 212
 213         /* power management status cookie from firmware */
 214         u32 *cookie;
 215         dma_addr_t cookie_dma;
 216
 217         u16 num_mcaddrs;
 218         u8 hw_rev;
 219         u32 fw_rev;
 220
 221         /*
 222          * Running count of TX packets in flight, to avoid
 223          * iterating over the transmit rings each time.
 224          */
 225         int pending_tx_pkts;
 226
 227         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 228         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 229         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 230
 231         bool radio_on;
 232         bool radio_short_preamble;
 233         bool sniffer_enabled;
 234         bool wmm_enabled;
 235
 236         /* XXX need to convert this to handle multiple interfaces */
 237         bool capture_beacon;
 238         u8 capture_bssid[ETH_ALEN];
 239         struct sk_buff *beacon_skb;
 240
 241         /*
 242          * This FJ worker has to be global as it is scheduled from the
 243          * RX handler.  At this point we don't know which interface it
 244          * belongs to until the list of bssids waiting to complete join
 245          * is checked.
 246          */
 247         struct work_struct finalize_join_worker;
 248
 249         /* Tasklet to perform TX reclaim.  */
 250         struct tasklet_struct poll_tx_task;
 251
 252         /* Tasklet to perform RX.  */
 253         struct tasklet_struct poll_rx_task;
 254
 255         /* Most recently reported noise in dBm */
 256         s8 noise;
 257
 258         /*
 259          * preserve the queue configurations so they can be restored if/when
 260          * the firmware image is swapped.
 261          */
 262         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 263
 264         /* async firmware loading state */
 265         unsigned fw_state;
 266         char *fw_pref;
 267         char *fw_alt;
 268         struct completion firmware_loading_complete;
 269 };
 270
 271 #define MAX_WEP_KEY_LEN         13
 272 #define NUM_WEP_KEYS            4
 273
 274 /* Per interface specific private data */
 275 struct mwl8k_vif {
 276         struct list_head list;
 277         struct ieee80211_vif *vif;
 278
 279         /* Firmware macid for this vif.  */
 280         int macid;
 281
 282         /* Non AMPDU sequence number assigned by driver.  */
 283         u16 seqno;
 284
 285         /* Saved WEP keys */
 286         struct {
 287                 u8 enabled;
 288                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 289         } wep_key_conf[NUM_WEP_KEYS];
 290
 291         /* BSSID */
 292         u8 bssid[ETH_ALEN];
 293
 294         /* A flag to indicate is HW crypto is enabled for this bssid */
 295         bool is_hw_crypto_enabled;
 296 };
 297 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 298 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 299
 300 struct tx_traffic_info {
 301         u32 start_time;
 302         u32 pkts;
 303 };
 304
 305 #define MWL8K_MAX_TID 8
 306 struct mwl8k_sta {
 307         /* Index into station database. Returned by UPDATE_STADB.  */
 308         u8 peer_id;
 309         u8 is_ampdu_allowed;
 310         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 311 };
 312 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 313
 314 static const struct ieee80211_channel mwl8k_channels_24[] = {
 315         { .center_freq = 2412, .hw_value = 1, },
 316         { .center_freq = 2417, .hw_value = 2, },
 317         { .center_freq = 2422, .hw_value = 3, },
 318         { .center_freq = 2427, .hw_value = 4, },
 319         { .center_freq = 2432, .hw_value = 5, },
 320         { .center_freq = 2437, .hw_value = 6, },
 321         { .center_freq = 2442, .hw_value = 7, },
 322         { .center_freq = 2447, .hw_value = 8, },
 323         { .center_freq = 2452, .hw_value = 9, },
 324         { .center_freq = 2457, .hw_value = 10, },
 325         { .center_freq = 2462, .hw_value = 11, },
 326         { .center_freq = 2467, .hw_value = 12, },
 327         { .center_freq = 2472, .hw_value = 13, },
 328         { .center_freq = 2484, .hw_value = 14, },
 329 };
 330
 331 static const struct ieee80211_rate mwl8k_rates_24[] = {
 332         { .bitrate = 10, .hw_value = 2, },
 333         { .bitrate = 20, .hw_value = 4, },
 334         { .bitrate = 55, .hw_value = 11, },
 335         { .bitrate = 110, .hw_value = 22, },
 336         { .bitrate = 220, .hw_value = 44, },
 337         { .bitrate = 60, .hw_value = 12, },
 338         { .bitrate = 90, .hw_value = 18, },
 339         { .bitrate = 120, .hw_value = 24, },
 340         { .bitrate = 180, .hw_value = 36, },
 341         { .bitrate = 240, .hw_value = 48, },
 342         { .bitrate = 360, .hw_value = 72, },
 343         { .bitrate = 480, .hw_value = 96, },
 344         { .bitrate = 540, .hw_value = 108, },
 345         { .bitrate = 720, .hw_value = 144, },
 346 };
 347
 348 static const struct ieee80211_channel mwl8k_channels_50[] = {
 349         { .center_freq = 5180, .hw_value = 36, },
 350         { .center_freq = 5200, .hw_value = 40, },
 351         { .center_freq = 5220, .hw_value = 44, },
 352         { .center_freq = 5240, .hw_value = 48, },
 353 };
 354
 355 static const struct ieee80211_rate mwl8k_rates_50[] = {
 356         { .bitrate = 60, .hw_value = 12, },
 357         { .bitrate = 90, .hw_value = 18, },
 358         { .bitrate = 120, .hw_value = 24, },
 359         { .bitrate = 180, .hw_value = 36, },
 360         { .bitrate = 240, .hw_value = 48, },
 361         { .bitrate = 360, .hw_value = 72, },
 362         { .bitrate = 480, .hw_value = 96, },
 363         { .bitrate = 540, .hw_value = 108, },
 364         { .bitrate = 720, .hw_value = 144, },
 365 };
 366
 367 /* Set or get info from Firmware */
 368 #define MWL8K_CMD_GET                   0x0000
 369 #define MWL8K_CMD_SET                   0x0001
 370 #define MWL8K_CMD_SET_LIST              0x0002
 371
 372 /* Firmware command codes */
 373 #define MWL8K_CMD_CODE_DNLD             0x0001
 374 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 375 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 376 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 377 #define MWL8K_CMD_GET_STAT              0x0014
 378 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 379 #define MWL8K_CMD_RF_TX_POWER           0x001e
 380 #define MWL8K_CMD_TX_POWER              0x001f
 381 #define MWL8K_CMD_RF_ANTENNA            0x0020
 382 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 383 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 384 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 385 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 386 #define MWL8K_CMD_SET_AID               0x010d
 387 #define MWL8K_CMD_SET_RATE              0x0110
 388 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 389 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 390 #define MWL8K_CMD_SET_SLOT              0x0114
 391 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 392 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 393 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 394 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 395 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 396 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 397 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 398 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 399 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 400 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 401 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 402 #define MWL8K_CMD_UPDATE_STADB          0x1123
 403 #define MWL8K_CMD_BASTREAM              0x1125
 404
 405 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 406 {
 407         u16 command = le16_to_cpu(cmd);
 408
 409 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 410                                         snprintf(buf, bufsize, "%s", #x);\
 411                                         return buf;\
 412                                         } while (0)
 413         switch (command & ~0x8000) {
 414                 MWL8K_CMDNAME(CODE_DNLD);
 415                 MWL8K_CMDNAME(GET_HW_SPEC);
 416                 MWL8K_CMDNAME(SET_HW_SPEC);
 417                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 418                 MWL8K_CMDNAME(GET_STAT);
 419                 MWL8K_CMDNAME(RADIO_CONTROL);
 420                 MWL8K_CMDNAME(RF_TX_POWER);
 421                 MWL8K_CMDNAME(TX_POWER);
 422                 MWL8K_CMDNAME(RF_ANTENNA);
 423                 MWL8K_CMDNAME(SET_BEACON);
 424                 MWL8K_CMDNAME(SET_PRE_SCAN);
 425                 MWL8K_CMDNAME(SET_POST_SCAN);
 426                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 427                 MWL8K_CMDNAME(SET_AID);
 428                 MWL8K_CMDNAME(SET_RATE);
 429                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 430                 MWL8K_CMDNAME(RTS_THRESHOLD);
 431                 MWL8K_CMDNAME(SET_SLOT);
 432                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 433                 MWL8K_CMDNAME(SET_WMM_MODE);
 434                 MWL8K_CMDNAME(MIMO_CONFIG);
 435                 MWL8K_CMDNAME(USE_FIXED_RATE);
 436                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 437                 MWL8K_CMDNAME(SET_MAC_ADDR);
 438                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 439                 MWL8K_CMDNAME(BSS_START);
 440                 MWL8K_CMDNAME(SET_NEW_STN);
 441                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 442                 MWL8K_CMDNAME(UPDATE_STADB);
 443                 MWL8K_CMDNAME(BASTREAM);
 444                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 445         default:
 446                 snprintf(buf, bufsize, "0x%x", cmd);
 447         }
 448 #undef MWL8K_CMDNAME
 449
 450         return buf;
 451 }
 452
 453 /* Hardware and firmware reset */
 454 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 455 {
 456         iowrite32(MWL8K_H2A_INT_RESET,
 457                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 458         iowrite32(MWL8K_H2A_INT_RESET,
 459                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 460         msleep(20);
 461 }
 462
 463 /* Release fw image */
 464 static void mwl8k_release_fw(const struct firmware **fw)
 465 {
 466         if (*fw == NULL)
 467                 return;
 468         release_firmware(*fw);
 469         *fw = NULL;
 470 }
 471
 472 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 473 {
 474         mwl8k_release_fw(&priv->fw_ucode);
 475         mwl8k_release_fw(&priv->fw_helper);
 476 }
 477
 478 /* states for asynchronous f/w loading */
 479 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 480 enum {
 481         FW_STATE_INIT = 0,
 482         FW_STATE_LOADING_PREF,
 483         FW_STATE_LOADING_ALT,
 484         FW_STATE_ERROR,
 485 };
 486
 487 /* Request fw image */
 488 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 489                             const char *fname, const struct firmware **fw,
 490                             bool nowait)
 491 {
 492         /* release current image */
 493         if (*fw != NULL)
 494                 mwl8k_release_fw(fw);
 495
 496         if (nowait)
 497                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 498                                                &priv->pdev->dev, GFP_KERNEL,
 499                                                priv, mwl8k_fw_state_machine);
 500         else
 501                 return request_firmware(fw, fname, &priv->pdev->dev);
 502 }
 503
 504 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 505                                   bool nowait)
 506 {
 507         struct mwl8k_device_info *di = priv->device_info;
 508         int rc;
 509
 510         if (di->helper_image != NULL) {
 511                 if (nowait)
 512                         rc = mwl8k_request_fw(priv, di->helper_image,
 513                                               &priv->fw_helper, true);
 514                 else
 515                         rc = mwl8k_request_fw(priv, di->helper_image,
 516                                               &priv->fw_helper, false);
 517                 if (rc)
 518                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 519                                pci_name(priv->pdev), di->helper_image);
 520
 521                 if (rc || nowait)
 522                         return rc;
 523         }
 524
 525         if (nowait) {
 526                 /*
 527                  * if we get here, no helper image is needed.  Skip the
 528                  * FW_STATE_INIT state.
 529                  */
 530                 priv->fw_state = FW_STATE_LOADING_PREF;
 531                 rc = mwl8k_request_fw(priv, fw_image,
 532                                       &priv->fw_ucode,
 533                                       true);
 534         } else
 535                 rc = mwl8k_request_fw(priv, fw_image,
 536                                       &priv->fw_ucode, false);
 537         if (rc) {
 538                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 539                        pci_name(priv->pdev), fw_image);
 540                 mwl8k_release_fw(&priv->fw_helper);
 541                 return rc;
 542         }
 543
 544         return 0;
 545 }
 546
 547 struct mwl8k_cmd_pkt {
 548         __le16  code;
 549         __le16  length;
 550         __u8    seq_num;
 551         __u8    macid;
 552         __le16  result;
 553         char    payload[0];
 554 } __packed;
 555
 556 /*
 557  * Firmware loading.
 558  */
 559 static int
 560 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 561 {
 562         void __iomem *regs = priv->regs;
 563         dma_addr_t dma_addr;
 564         int loops;
 565
 566         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 567         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 568                 return -ENOMEM;
 569
 570         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 571         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 572         iowrite32(MWL8K_H2A_INT_DOORBELL,
 573                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 574         iowrite32(MWL8K_H2A_INT_DUMMY,
 575                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 576
 577         loops = 1000;
 578         do {
 579                 u32 int_code;
 580
 581                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 582                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 583                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 584                         break;
 585                 }
 586
 587                 cond_resched();
 588                 udelay(1);
 589         } while (--loops);
 590
 591         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 592
 593         return loops ? 0 : -ETIMEDOUT;
 594 }
 595
 596 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 597                                 const u8 *data, size_t length)
 598 {
 599         struct mwl8k_cmd_pkt *cmd;
 600         int done;
 601         int rc = 0;
 602
 603         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 604         if (cmd == NULL)
 605                 return -ENOMEM;
 606
 607         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 608         cmd->seq_num = 0;
 609         cmd->macid = 0;
 610         cmd->result = 0;
 611
 612         done = 0;
 613         while (length) {
 614                 int block_size = length > 256 ? 256 : length;
 615
 616                 memcpy(cmd->payload, data + done, block_size);
 617                 cmd->length = cpu_to_le16(block_size);
 618
 619                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 620                                                 sizeof(*cmd) + block_size);
 621                 if (rc)
 622                         break;
 623
 624                 done += block_size;
 625                 length -= block_size;
 626         }
 627
 628         if (!rc) {
 629                 cmd->length = 0;
 630                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 631         }
 632
 633         kfree(cmd);
 634
 635         return rc;
 636 }
 637
 638 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 639                                 const u8 *data, size_t length)
 640 {
 641         unsigned char *buffer;
 642         int may_continue, rc = 0;
 643         u32 done, prev_block_size;
 644
 645         buffer = kmalloc(1024, GFP_KERNEL);
 646         if (buffer == NULL)
 647                 return -ENOMEM;
 648
 649         done = 0;
 650         prev_block_size = 0;
 651         may_continue = 1000;
 652         while (may_continue > 0) {
 653                 u32 block_size;
 654
 655                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 656                 if (block_size & 1) {
 657                         block_size &= ~1;
 658                         may_continue--;
 659                 } else {
 660                         done += prev_block_size;
 661                         length -= prev_block_size;
 662                 }
 663
 664                 if (block_size > 1024 || block_size > length) {
 665                         rc = -EOVERFLOW;
 666                         break;
 667                 }
 668
 669                 if (length == 0) {
 670                         rc = 0;
 671                         break;
 672                 }
 673
 674                 if (block_size == 0) {
 675                         rc = -EPROTO;
 676                         may_continue--;
 677                         udelay(1);
 678                         continue;
 679                 }
 680
 681                 prev_block_size = block_size;
 682                 memcpy(buffer, data + done, block_size);
 683
 684                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 685                 if (rc)
 686                         break;
 687         }
 688
 689         if (!rc && length != 0)
 690                 rc = -EREMOTEIO;
 691
 692         kfree(buffer);
 693
 694         return rc;
 695 }
 696
 697 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 698 {
 699         struct mwl8k_priv *priv = hw->priv;
 700         const struct firmware *fw = priv->fw_ucode;
 701         int rc;
 702         int loops;
 703
 704         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 705                 const struct firmware *helper = priv->fw_helper;
 706
 707                 if (helper == NULL) {
 708                         printk(KERN_ERR "%s: helper image needed but none "
 709                                "given\n", pci_name(priv->pdev));
 710                         return -EINVAL;
 711                 }
 712
 713                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 714                 if (rc) {
 715                         printk(KERN_ERR "%s: unable to load firmware "
 716                                "helper image\n", pci_name(priv->pdev));
 717                         return rc;
 718                 }
 719                 msleep(20);
 720
 721                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 722         } else {
 723                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 724         }
 725
 726         if (rc) {
 727                 printk(KERN_ERR "%s: unable to load firmware image\n",
 728                        pci_name(priv->pdev));
 729                 return rc;
 730         }
 731
 732         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 733
 734         loops = 500000;
 735         do {
 736                 u32 ready_code;
 737
 738                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 739                 if (ready_code == MWL8K_FWAP_READY) {
 740                         priv->ap_fw = 1;
 741                         break;
 742                 } else if (ready_code == MWL8K_FWSTA_READY) {
 743                         priv->ap_fw = 0;
 744                         break;
 745                 }
 746
 747                 cond_resched();
 748                 udelay(1);
 749         } while (--loops);
 750
 751         return loops ? 0 : -ETIMEDOUT;
 752 }
 753
 754
 755 /* DMA header used by firmware and hardware.  */
 756 struct mwl8k_dma_data {
 757         __le16 fwlen;
 758         struct ieee80211_hdr wh;
 759         char data[0];
 760 } __packed;
 761
 762 /* Routines to add/remove DMA header from skb.  */
 763 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 764 {
 765         struct mwl8k_dma_data *tr;
 766         int hdrlen;
 767
 768         tr = (struct mwl8k_dma_data *)skb->data;
 769         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 770
 771         if (hdrlen != sizeof(tr->wh)) {
 772                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 773                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 774                         *((__le16 *)(tr->data - 2)) = qos;
 775                 } else {
 776                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 777                 }
 778         }
 779
 780         if (hdrlen != sizeof(*tr))
 781                 skb_pull(skb, sizeof(*tr) - hdrlen);
 782 }
 783
 784 #define REDUCED_TX_HEADROOM     8
 785
 786 static void
 787 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 788                                                 int head_pad, int tail_pad)
 789 {
 790         struct ieee80211_hdr *wh;
 791         int hdrlen;
 792         int reqd_hdrlen;
 793         struct mwl8k_dma_data *tr;
 794
 795         /*
 796          * Add a firmware DMA header; the firmware requires that we
 797          * present a 2-byte payload length followed by a 4-address
 798          * header (without QoS field), followed (optionally) by any
 799          * WEP/ExtIV header (but only filled in for CCMP).
 800          */
 801         wh = (struct ieee80211_hdr *)skb->data;
 802
 803         hdrlen = ieee80211_hdrlen(wh->frame_control);
 804
 805         /*
 806          * Check if skb_resize is required because of
 807          * tx_headroom adjustment.
 808          */
 809         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 810                                                 + REDUCED_TX_HEADROOM))) {
 811                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 812
 813                         wiphy_err(priv->hw->wiphy,
 814                                         "Failed to reallocate TX buffer\n");
 815                         return;
 816                 }
 817                 skb->truesize += REDUCED_TX_HEADROOM;
 818         }
 819
 820         reqd_hdrlen = sizeof(*tr) + head_pad;
 821
 822         if (hdrlen != reqd_hdrlen)
 823                 skb_push(skb, reqd_hdrlen - hdrlen);
 824
 825         if (ieee80211_is_data_qos(wh->frame_control))
 826                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 827
 828         tr = (struct mwl8k_dma_data *)skb->data;
 829         if (wh != &tr->wh)
 830                 memmove(&tr->wh, wh, hdrlen);
 831         if (hdrlen != sizeof(tr->wh))
 832                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 833
 834         /*
 835          * Firmware length is the length of the fully formed "802.11
 836          * payload".  That is, everything except for the 802.11 header.
 837          * This includes all crypto material including the MIC.
 838          */
 839         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 840 }
 841
 842 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 843                 struct sk_buff *skb)
 844 {
 845         struct ieee80211_hdr *wh;
 846         struct ieee80211_tx_info *tx_info;
 847         struct ieee80211_key_conf *key_conf;
 848         int data_pad;
 849         int head_pad = 0;
 850
 851         wh = (struct ieee80211_hdr *)skb->data;
 852
 853         tx_info = IEEE80211_SKB_CB(skb);
 854
 855         key_conf = NULL;
 856         if (ieee80211_is_data(wh->frame_control))
 857                 key_conf = tx_info->control.hw_key;
 858
 859         /*
 860          * Make sure the packet header is in the DMA header format (4-address
 861          * without QoS), and add head & tail padding when HW crypto is enabled.
 862          *
 863          * We have the following trailer padding requirements:
 864          * - WEP: 4 trailer bytes (ICV)
 865          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 866          * - CCMP: 8 trailer bytes (MIC)
 867          */
 868         data_pad = 0;
 869         if (key_conf != NULL) {
 870                 head_pad = key_conf->iv_len;
 871                 switch (key_conf->cipher) {
 872                 case WLAN_CIPHER_SUITE_WEP40:
 873                 case WLAN_CIPHER_SUITE_WEP104:
 874                         data_pad = 4;
 875                         break;
 876                 case WLAN_CIPHER_SUITE_TKIP:
 877                         data_pad = 12;
 878                         break;
 879                 case WLAN_CIPHER_SUITE_CCMP:
 880                         data_pad = 8;
 881                         break;
 882                 }
 883         }
 884         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 885 }
 886
 887 /*
 888  * Packet reception for 88w8366 AP firmware.
 889  */
 890 struct mwl8k_rxd_8366_ap {
 891         __le16 pkt_len;
 892         __u8 sq2;
 893         __u8 rate;
 894         __le32 pkt_phys_addr;
 895         __le32 next_rxd_phys_addr;
 896         __le16 qos_control;
 897         __le16 htsig2;
 898         __le32 hw_rssi_info;
 899         __le32 hw_noise_floor_info;
 900         __u8 noise_floor;
 901         __u8 pad0[3];
 902         __u8 rssi;
 903         __u8 rx_status;
 904         __u8 channel;
 905         __u8 rx_ctrl;
 906 } __packed;
 907
 908 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 909 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 910 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 911
 912 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 913
 914 /* 8366 AP rx_status bits */
 915 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 916 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 917 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 918 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 919 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 920
 921 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 922 {
 923         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 924
 925         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 926         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 927 }
 928
 929 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 930 {
 931         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 932
 933         rxd->pkt_len = cpu_to_le16(len);
 934         rxd->pkt_phys_addr = cpu_to_le32(addr);
 935         wmb();
 936         rxd->rx_ctrl = 0;
 937 }
 938
 939 static int
 940 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 941                           __le16 *qos, s8 *noise)
 942 {
 943         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 944
 945         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 946                 return -1;
 947         rmb();
 948
 949         memset(status, 0, sizeof(*status));
 950
 951         status->signal = -rxd->rssi;
 952         *noise = -rxd->noise_floor;
 953
 954         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 955                 status->flag |= RX_FLAG_HT;
 956                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 957                         status->flag |= RX_FLAG_40MHZ;
 958                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 959         } else {
 960                 int i;
 961
 962                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 963                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 964                                 status->rate_idx = i;
 965                                 break;
 966                         }
 967                 }
 968         }
 969
 970         if (rxd->channel > 14) {
 971                 status->band = IEEE80211_BAND_5GHZ;
 972                 if (!(status->flag & RX_FLAG_HT))
 973                         status->rate_idx -= 5;
 974         } else {
 975                 status->band = IEEE80211_BAND_2GHZ;
 976         }
 977         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 978                                                       status->band);
 979
 980         *qos = rxd->qos_control;
 981
 982         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 983             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 984             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 985                 status->flag |= RX_FLAG_MMIC_ERROR;
 986
 987         return le16_to_cpu(rxd->pkt_len);
 988 }
 989
 990 static struct rxd_ops rxd_8366_ap_ops = {
 991         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 992         .rxd_init       = mwl8k_rxd_8366_ap_init,
 993         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 994         .rxd_process    = mwl8k_rxd_8366_ap_process,
 995 };
 996
 997 /*
 998  * Packet reception for STA firmware.
 999  */
1000 struct mwl8k_rxd_sta {
1001         __le16 pkt_len;
1002         __u8 link_quality;
1003         __u8 noise_level;
1004         __le32 pkt_phys_addr;
1005         __le32 next_rxd_phys_addr;
1006         __le16 qos_control;
1007         __le16 rate_info;
1008         __le32 pad0[4];
1009         __u8 rssi;
1010         __u8 channel;
1011         __le16 pad1;
1012         __u8 rx_ctrl;
1013         __u8 rx_status;
1014         __u8 pad2[2];
1015 } __packed;
1016
1017 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1018 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1019 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1020 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1021 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1022 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1023
1024 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1025 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1026 /* ICV=0 or MIC=1 */
1027 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1028 /* Key is uploaded only in failure case */
1029 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1030
1031 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1032 {
1033         struct mwl8k_rxd_sta *rxd = _rxd;
1034
1035         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1036         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1037 }
1038
1039 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1040 {
1041         struct mwl8k_rxd_sta *rxd = _rxd;
1042
1043         rxd->pkt_len = cpu_to_le16(len);
1044         rxd->pkt_phys_addr = cpu_to_le32(addr);
1045         wmb();
1046         rxd->rx_ctrl = 0;
1047 }
1048
1049 static int
1050 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1051                        __le16 *qos, s8 *noise)
1052 {
1053         struct mwl8k_rxd_sta *rxd = _rxd;
1054         u16 rate_info;
1055
1056         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1057                 return -1;
1058         rmb();
1059
1060         rate_info = le16_to_cpu(rxd->rate_info);
1061
1062         memset(status, 0, sizeof(*status));
1063
1064         status->signal = -rxd->rssi;
1065         *noise = -rxd->noise_level;
1066         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1067         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1068
1069         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1070                 status->flag |= RX_FLAG_SHORTPRE;
1071         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1072                 status->flag |= RX_FLAG_40MHZ;
1073         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1074                 status->flag |= RX_FLAG_SHORT_GI;
1075         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1076                 status->flag |= RX_FLAG_HT;
1077
1078         if (rxd->channel > 14) {
1079                 status->band = IEEE80211_BAND_5GHZ;
1080                 if (!(status->flag & RX_FLAG_HT))
1081                         status->rate_idx -= 5;
1082         } else {
1083                 status->band = IEEE80211_BAND_2GHZ;
1084         }
1085         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1086                                                       status->band);
1087
1088         *qos = rxd->qos_control;
1089         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1090             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1091                 status->flag |= RX_FLAG_MMIC_ERROR;
1092
1093         return le16_to_cpu(rxd->pkt_len);
1094 }
1095
1096 static struct rxd_ops rxd_sta_ops = {
1097         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1098         .rxd_init       = mwl8k_rxd_sta_init,
1099         .rxd_refill     = mwl8k_rxd_sta_refill,
1100         .rxd_process    = mwl8k_rxd_sta_process,
1101 };
1102
1103
1104 #define MWL8K_RX_DESCS          256
1105 #define MWL8K_RX_MAXSZ          3800
1106
1107 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1108 {
1109         struct mwl8k_priv *priv = hw->priv;
1110         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1111         int size;
1112         int i;
1113
1114         rxq->rxd_count = 0;
1115         rxq->head = 0;
1116         rxq->tail = 0;
1117
1118         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1119
1120         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1121         if (rxq->rxd == NULL) {
1122                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1123                 return -ENOMEM;
1124         }
1125         memset(rxq->rxd, 0, size);
1126
1127         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1128         if (rxq->buf == NULL) {
1129                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1130                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1131                 return -ENOMEM;
1132         }
1133
1134         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1135                 int desc_size;
1136                 void *rxd;
1137                 int nexti;
1138                 dma_addr_t next_dma_addr;
1139
1140                 desc_size = priv->rxd_ops->rxd_size;
1141                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1142
1143                 nexti = i + 1;
1144                 if (nexti == MWL8K_RX_DESCS)
1145                         nexti = 0;
1146                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1147
1148                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1149         }
1150
1151         return 0;
1152 }
1153
1154 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1155 {
1156         struct mwl8k_priv *priv = hw->priv;
1157         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1158         int refilled;
1159
1160         refilled = 0;
1161         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1162                 struct sk_buff *skb;
1163                 dma_addr_t addr;
1164                 int rx;
1165                 void *rxd;
1166
1167                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1168                 if (skb == NULL)
1169                         break;
1170
1171                 addr = pci_map_single(priv->pdev, skb->data,
1172                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1173
1174                 rxq->rxd_count++;
1175                 rx = rxq->tail++;
1176                 if (rxq->tail == MWL8K_RX_DESCS)
1177                         rxq->tail = 0;
1178                 rxq->buf[rx].skb = skb;
1179                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1180
1181                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1182                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1183
1184                 refilled++;
1185         }
1186
1187         return refilled;
1188 }
1189
1190 /* Must be called only when the card's reception is completely halted */
1191 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1192 {
1193         struct mwl8k_priv *priv = hw->priv;
1194         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1195         int i;
1196
1197         if (rxq->rxd == NULL)
1198                 return;
1199
1200         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1201                 if (rxq->buf[i].skb != NULL) {
1202                         pci_unmap_single(priv->pdev,
1203                                          dma_unmap_addr(&rxq->buf[i], dma),
1204                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1205                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1206
1207                         kfree_skb(rxq->buf[i].skb);
1208                         rxq->buf[i].skb = NULL;
1209                 }
1210         }
1211
1212         kfree(rxq->buf);
1213         rxq->buf = NULL;
1214
1215         pci_free_consistent(priv->pdev,
1216                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1217                             rxq->rxd, rxq->rxd_dma);
1218         rxq->rxd = NULL;
1219 }
1220
1221
1222 /*
1223  * Scan a list of BSSIDs to process for finalize join.
1224  * Allows for extension to process multiple BSSIDs.
1225  */
1226 static inline int
1227 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1228 {
1229         return priv->capture_beacon &&
1230                 ieee80211_is_beacon(wh->frame_control) &&
1231                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1232 }
1233
1234 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1235                                      struct sk_buff *skb)
1236 {
1237         struct mwl8k_priv *priv = hw->priv;
1238
1239         priv->capture_beacon = false;
1240         memset(priv->capture_bssid, 0, ETH_ALEN);
1241
1242         /*
1243          * Use GFP_ATOMIC as rxq_process is called from
1244          * the primary interrupt handler, memory allocation call
1245          * must not sleep.
1246          */
1247         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1248         if (priv->beacon_skb != NULL)
1249                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1250 }
1251
1252 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1253                                                    u8 *bssid)
1254 {
1255         struct mwl8k_vif *mwl8k_vif;
1256
1257         list_for_each_entry(mwl8k_vif,
1258                             vif_list, list) {
1259                 if (memcmp(bssid, mwl8k_vif->bssid,
1260                            ETH_ALEN) == 0)
1261                         return mwl8k_vif;
1262         }
1263
1264         return NULL;
1265 }
1266
1267 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1268 {
1269         struct mwl8k_priv *priv = hw->priv;
1270         struct mwl8k_vif *mwl8k_vif = NULL;
1271         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1272         int processed;
1273
1274         processed = 0;
1275         while (rxq->rxd_count && limit--) {
1276                 struct sk_buff *skb;
1277                 void *rxd;
1278                 int pkt_len;
1279                 struct ieee80211_rx_status status;
1280                 struct ieee80211_hdr *wh;
1281                 __le16 qos;
1282
1283                 skb = rxq->buf[rxq->head].skb;
1284                 if (skb == NULL)
1285                         break;
1286
1287                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1288
1289                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1290                                                         &priv->noise);
1291                 if (pkt_len < 0)
1292                         break;
1293
1294                 rxq->buf[rxq->head].skb = NULL;
1295
1296                 pci_unmap_single(priv->pdev,
1297                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1298                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1299                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1300
1301                 rxq->head++;
1302                 if (rxq->head == MWL8K_RX_DESCS)
1303                         rxq->head = 0;
1304
1305                 rxq->rxd_count--;
1306
1307                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1308
1309                 /*
1310                  * Check for a pending join operation.  Save a
1311                  * copy of the beacon and schedule a tasklet to
1312                  * send a FINALIZE_JOIN command to the firmware.
1313                  */
1314                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1315                         mwl8k_save_beacon(hw, skb);
1316
1317                 if (ieee80211_has_protected(wh->frame_control)) {
1318
1319                         /* Check if hw crypto has been enabled for
1320                          * this bss. If yes, set the status flags
1321                          * accordingly
1322                          */
1323                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1324                                                                 wh->addr1);
1325
1326                         if (mwl8k_vif != NULL &&
1327                             mwl8k_vif->is_hw_crypto_enabled == true) {
1328                                 /*
1329                                  * When MMIC ERROR is encountered
1330                                  * by the firmware, payload is
1331                                  * dropped and only 32 bytes of
1332                                  * mwl8k Firmware header is sent
1333                                  * to the host.
1334                                  *
1335                                  * We need to add four bytes of
1336                                  * key information.  In it
1337                                  * MAC80211 expects keyidx set to
1338                                  * 0 for triggering Counter
1339                                  * Measure of MMIC failure.
1340                                  */
1341                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1342                                         struct mwl8k_dma_data *tr;
1343                                         tr = (struct mwl8k_dma_data *)skb->data;
1344                                         memset((void *)&(tr->data), 0, 4);
1345                                         pkt_len += 4;
1346                                 }
1347
1348                                 if (!ieee80211_is_auth(wh->frame_control))
1349                                         status.flag |= RX_FLAG_IV_STRIPPED |
1350                                                        RX_FLAG_DECRYPTED |
1351                                                        RX_FLAG_MMIC_STRIPPED;
1352                         }
1353                 }
1354
1355                 skb_put(skb, pkt_len);
1356                 mwl8k_remove_dma_header(skb, qos);
1357                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1358                 ieee80211_rx_irqsafe(hw, skb);
1359
1360                 processed++;
1361         }
1362
1363         return processed;
1364 }
1365
1366
1367 /*
1368  * Packet transmission.
1369  */
1370
1371 #define MWL8K_TXD_STATUS_OK                     0x00000001
1372 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1373 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1374 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1375 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1376
1377 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1378 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1379 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1380 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1381 #define MWL8K_QOS_EOSP                          0x0010
1382
1383 struct mwl8k_tx_desc {
1384         __le32 status;
1385         __u8 data_rate;
1386         __u8 tx_priority;
1387         __le16 qos_control;
1388         __le32 pkt_phys_addr;
1389         __le16 pkt_len;
1390         __u8 dest_MAC_addr[ETH_ALEN];
1391         __le32 next_txd_phys_addr;
1392         __le32 timestamp;
1393         __le16 rate_info;
1394         __u8 peer_id;
1395         __u8 tx_frag_cnt;
1396 } __packed;
1397
1398 #define MWL8K_TX_DESCS          128
1399
1400 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1401 {
1402         struct mwl8k_priv *priv = hw->priv;
1403         struct mwl8k_tx_queue *txq = priv->txq + index;
1404         int size;
1405         int i;
1406
1407         txq->len = 0;
1408         txq->head = 0;
1409         txq->tail = 0;
1410
1411         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1412
1413         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1414         if (txq->txd == NULL) {
1415                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1416                 return -ENOMEM;
1417         }
1418         memset(txq->txd, 0, size);
1419
1420         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1421         if (txq->skb == NULL) {
1422                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1423                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1424                 return -ENOMEM;
1425         }
1426
1427         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1428                 struct mwl8k_tx_desc *tx_desc;
1429                 int nexti;
1430
1431                 tx_desc = txq->txd + i;
1432                 nexti = (i + 1) % MWL8K_TX_DESCS;
1433
1434                 tx_desc->status = 0;
1435                 tx_desc->next_txd_phys_addr =
1436                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1437         }
1438
1439         return 0;
1440 }
1441
1442 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1443 {
1444         iowrite32(MWL8K_H2A_INT_PPA_READY,
1445                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1446         iowrite32(MWL8K_H2A_INT_DUMMY,
1447                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1448         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1449 }
1450
1451 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1452 {
1453         struct mwl8k_priv *priv = hw->priv;
1454         int i;
1455
1456         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1457                 struct mwl8k_tx_queue *txq = priv->txq + i;
1458                 int fw_owned = 0;
1459                 int drv_owned = 0;
1460                 int unused = 0;
1461                 int desc;
1462
1463                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1464                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1465                         u32 status;
1466
1467                         status = le32_to_cpu(tx_desc->status);
1468                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1469                                 fw_owned++;
1470                         else
1471                                 drv_owned++;
1472
1473                         if (tx_desc->pkt_len == 0)
1474                                 unused++;
1475                 }
1476
1477                 wiphy_err(hw->wiphy,
1478                           "txq[%d] len=%d head=%d tail=%d "
1479                           "fw_owned=%d drv_owned=%d unused=%d\n",
1480                           i,
1481                           txq->len, txq->head, txq->tail,
1482                           fw_owned, drv_owned, unused);
1483         }
1484 }
1485
1486 /*
1487  * Must be called with priv->fw_mutex held and tx queues stopped.
1488  */
1489 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1490
1491 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1492 {
1493         struct mwl8k_priv *priv = hw->priv;
1494         DECLARE_COMPLETION_ONSTACK(tx_wait);
1495         int retry;
1496         int rc;
1497
1498         might_sleep();
1499
1500         /*
1501          * The TX queues are stopped at this point, so this test
1502          * doesn't need to take ->tx_lock.
1503          */
1504         if (!priv->pending_tx_pkts)
1505                 return 0;
1506
1507         retry = 0;
1508         rc = 0;
1509
1510         spin_lock_bh(&priv->tx_lock);
1511         priv->tx_wait = &tx_wait;
1512         while (!rc) {
1513                 int oldcount;
1514                 unsigned long timeout;
1515
1516                 oldcount = priv->pending_tx_pkts;
1517
1518                 spin_unlock_bh(&priv->tx_lock);
1519                 timeout = wait_for_completion_timeout(&tx_wait,
1520                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1521                 spin_lock_bh(&priv->tx_lock);
1522
1523                 if (timeout) {
1524                         WARN_ON(priv->pending_tx_pkts);
1525                         if (retry)
1526                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1527                         break;
1528                 }
1529
1530                 if (priv->pending_tx_pkts < oldcount) {
1531                         wiphy_notice(hw->wiphy,
1532                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1533                                      oldcount, priv->pending_tx_pkts);
1534                         retry = 1;
1535                         continue;
1536                 }
1537
1538                 priv->tx_wait = NULL;
1539
1540                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1541                           MWL8K_TX_WAIT_TIMEOUT_MS);
1542                 mwl8k_dump_tx_rings(hw);
1543
1544                 rc = -ETIMEDOUT;
1545         }
1546         spin_unlock_bh(&priv->tx_lock);
1547
1548         return rc;
1549 }
1550
1551 #define MWL8K_TXD_SUCCESS(status)                               \
1552         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1553                      MWL8K_TXD_STATUS_OK_RETRY |                \
1554                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1555
1556 static int mwl8k_tid_queue_mapping(u8 tid)
1557 {
1558         BUG_ON(tid > 7);
1559
1560         switch (tid) {
1561         case 0:
1562         case 3:
1563                 return IEEE80211_AC_BE;
1564                 break;
1565         case 1:
1566         case 2:
1567                 return IEEE80211_AC_BK;
1568                 break;
1569         case 4:
1570         case 5:
1571                 return IEEE80211_AC_VI;
1572                 break;
1573         case 6:
1574         case 7:
1575                 return IEEE80211_AC_VO;
1576                 break;
1577         default:
1578                 return -1;
1579                 break;
1580         }
1581 }
1582
1583 /* The firmware will fill in the rate information
1584  * for each packet that gets queued in the hardware
1585  * and these macros will interpret that info.
1586  */
1587
1588 #define RI_FORMAT(a)              (a & 0x0001)
1589 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1590
1591 static int
1592 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1593 {
1594         struct mwl8k_priv *priv = hw->priv;
1595         struct mwl8k_tx_queue *txq = priv->txq + index;
1596         int processed;
1597
1598         processed = 0;
1599         while (txq->len > 0 && limit--) {
1600                 int tx;
1601                 struct mwl8k_tx_desc *tx_desc;
1602                 unsigned long addr;
1603                 int size;
1604                 struct sk_buff *skb;
1605                 struct ieee80211_tx_info *info;
1606                 u32 status;
1607                 struct ieee80211_sta *sta;
1608                 struct mwl8k_sta *sta_info = NULL;
1609                 u16 rate_info;
1610                 struct ieee80211_hdr *wh;
1611
1612                 tx = txq->head;
1613                 tx_desc = txq->txd + tx;
1614
1615                 status = le32_to_cpu(tx_desc->status);
1616
1617                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1618                         if (!force)
1619                                 break;
1620                         tx_desc->status &=
1621                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1622                 }
1623
1624                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1625                 BUG_ON(txq->len == 0);
1626                 txq->len--;
1627                 priv->pending_tx_pkts--;
1628
1629                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1630                 size = le16_to_cpu(tx_desc->pkt_len);
1631                 skb = txq->skb[tx];
1632                 txq->skb[tx] = NULL;
1633
1634                 BUG_ON(skb == NULL);
1635                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1636
1637                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1638
1639                 wh = (struct ieee80211_hdr *) skb->data;
1640
1641                 /* Mark descriptor as unused */
1642                 tx_desc->pkt_phys_addr = 0;
1643                 tx_desc->pkt_len = 0;
1644
1645                 info = IEEE80211_SKB_CB(skb);
1646                 if (ieee80211_is_data(wh->frame_control)) {
1647                         sta = info->control.sta;
1648                         if (sta) {
1649                                 sta_info = MWL8K_STA(sta);
1650                                 BUG_ON(sta_info == NULL);
1651                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1652                                 /* If rate is < 6.5 Mpbs for an ht station
1653                                  * do not form an ampdu. If the station is a
1654                                  * legacy station (format = 0), do not form an
1655                                  * ampdu
1656                                  */
1657                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1658                                     RI_FORMAT(rate_info) == 0) {
1659                                         sta_info->is_ampdu_allowed = false;
1660                                 } else {
1661                                         sta_info->is_ampdu_allowed = true;
1662                                 }
1663                         }
1664                 }
1665
1666                 ieee80211_tx_info_clear_status(info);
1667
1668                 /* Rate control is happening in the firmware.
1669                  * Ensure no tx rate is being reported.
1670                  */
1671                 info->status.rates[0].idx = -1;
1672                 info->status.rates[0].count = 1;
1673
1674                 if (MWL8K_TXD_SUCCESS(status))
1675                         info->flags |= IEEE80211_TX_STAT_ACK;
1676
1677                 ieee80211_tx_status_irqsafe(hw, skb);
1678
1679                 processed++;
1680         }
1681
1682         return processed;
1683 }
1684
1685 /* must be called only when the card's transmit is completely halted */
1686 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1687 {
1688         struct mwl8k_priv *priv = hw->priv;
1689         struct mwl8k_tx_queue *txq = priv->txq + index;
1690
1691         if (txq->txd == NULL)
1692                 return;
1693
1694         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1695
1696         kfree(txq->skb);
1697         txq->skb = NULL;
1698
1699         pci_free_consistent(priv->pdev,
1700                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1701                             txq->txd, txq->txd_dma);
1702         txq->txd = NULL;
1703 }
1704
1705 /* caller must hold priv->stream_lock when calling the stream functions */
1706 static struct mwl8k_ampdu_stream *
1707 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1708 {
1709         struct mwl8k_ampdu_stream *stream;
1710         struct mwl8k_priv *priv = hw->priv;
1711         int i;
1712
1713         for (i = 0; i < priv->num_ampdu_queues; i++) {
1714                 stream = &priv->ampdu[i];
1715                 if (stream->state == AMPDU_NO_STREAM) {
1716                         stream->sta = sta;
1717                         stream->state = AMPDU_STREAM_NEW;
1718                         stream->tid = tid;
1719                         stream->idx = i;
1720                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1721                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1722                                     sta->addr, tid);
1723                         return stream;
1724                 }
1725         }
1726         return NULL;
1727 }
1728
1729 static int
1730 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1731 {
1732         int ret;
1733
1734         /* if the stream has already been started, don't start it again */
1735         if (stream->state != AMPDU_STREAM_NEW)
1736                 return 0;
1737         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1738         if (ret)
1739                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1740                             "%d\n", stream->sta->addr, stream->tid, ret);
1741         else
1742                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1743                             stream->sta->addr, stream->tid);
1744         return ret;
1745 }
1746
1747 static void
1748 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1749 {
1750         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1751                     stream->tid);
1752         memset(stream, 0, sizeof(*stream));
1753 }
1754
1755 static struct mwl8k_ampdu_stream *
1756 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1757 {
1758         struct mwl8k_priv *priv = hw->priv;
1759         int i;
1760
1761         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1762                 struct mwl8k_ampdu_stream *stream;
1763                 stream = &priv->ampdu[i];
1764                 if (stream->state == AMPDU_NO_STREAM)
1765                         continue;
1766                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1767                     stream->tid == tid)
1768                         return stream;
1769         }
1770         return NULL;
1771 }
1772
1773 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1774 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1775 {
1776         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1777         struct tx_traffic_info *tx_stats;
1778
1779         BUG_ON(tid >= MWL8K_MAX_TID);
1780         tx_stats = &sta_info->tx_stats[tid];
1781
1782         return sta_info->is_ampdu_allowed &&
1783                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1784 }
1785
1786 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1787 {
1788         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1789         struct tx_traffic_info *tx_stats;
1790
1791         BUG_ON(tid >= MWL8K_MAX_TID);
1792         tx_stats = &sta_info->tx_stats[tid];
1793
1794         if (tx_stats->start_time == 0)
1795                 tx_stats->start_time = jiffies;
1796
1797         /* reset the packet count after each second elapses.  If the number of
1798          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1799          * an ampdu stream to be started.
1800          */
1801         if (jiffies - tx_stats->start_time > HZ) {
1802                 tx_stats->pkts = 0;
1803                 tx_stats->start_time = 0;
1804         } else
1805                 tx_stats->pkts++;
1806 }
1807
1808 static void
1809 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1810 {
1811         struct mwl8k_priv *priv = hw->priv;
1812         struct ieee80211_tx_info *tx_info;
1813         struct mwl8k_vif *mwl8k_vif;
1814         struct ieee80211_sta *sta;
1815         struct ieee80211_hdr *wh;
1816         struct mwl8k_tx_queue *txq;
1817         struct mwl8k_tx_desc *tx;
1818         dma_addr_t dma;
1819         u32 txstatus;
1820         u8 txdatarate;
1821         u16 qos;
1822         int txpriority;
1823         u8 tid = 0;
1824         struct mwl8k_ampdu_stream *stream = NULL;
1825         bool start_ba_session = false;
1826         bool mgmtframe = false;
1827         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1828
1829         wh = (struct ieee80211_hdr *)skb->data;
1830         if (ieee80211_is_data_qos(wh->frame_control))
1831                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1832         else
1833                 qos = 0;
1834
1835         if (ieee80211_is_mgmt(wh->frame_control))
1836                 mgmtframe = true;
1837
1838         if (priv->ap_fw)
1839                 mwl8k_encapsulate_tx_frame(priv, skb);
1840         else
1841                 mwl8k_add_dma_header(priv, skb, 0, 0);
1842
1843         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1844
1845         tx_info = IEEE80211_SKB_CB(skb);
1846         sta = tx_info->control.sta;
1847         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1848
1849         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1850                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1851                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1852                 mwl8k_vif->seqno += 0x10;
1853         }
1854
1855         /* Setup firmware control bit fields for each frame type.  */
1856         txstatus = 0;
1857         txdatarate = 0;
1858         if (ieee80211_is_mgmt(wh->frame_control) ||
1859             ieee80211_is_ctl(wh->frame_control)) {
1860                 txdatarate = 0;
1861                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1862         } else if (ieee80211_is_data(wh->frame_control)) {
1863                 txdatarate = 1;
1864                 if (is_multicast_ether_addr(wh->addr1))
1865                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1866
1867                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1868                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1869                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1870                 else
1871                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1872         }
1873
1874         /* Queue ADDBA request in the respective data queue.  While setting up
1875          * the ampdu stream, mac80211 queues further packets for that
1876          * particular ra/tid pair.  However, packets piled up in the hardware
1877          * for that ra/tid pair will still go out. ADDBA request and the
1878          * related data packets going out from different queues asynchronously
1879          * will cause a shift in the receiver window which might result in
1880          * ampdu packets getting dropped at the receiver after the stream has
1881          * been setup.
1882          */
1883         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1884             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1885             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1886             priv->ap_fw)) {
1887                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1888                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1889                 index = mwl8k_tid_queue_mapping(tid);
1890         }
1891
1892         txpriority = index;
1893
1894         if (ieee80211_is_data_qos(wh->frame_control) &&
1895             skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1896             sta->ht_cap.ht_supported && priv->ap_fw) {
1897                 tid = qos & 0xf;
1898                 mwl8k_tx_count_packet(sta, tid);
1899                 spin_lock(&priv->stream_lock);
1900                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1901                 if (stream != NULL) {
1902                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1903                                 txpriority = stream->txq_idx;
1904                                 index = stream->txq_idx;
1905                         } else if (stream->state == AMPDU_STREAM_NEW) {
1906                                 /* We get here if the driver sends us packets
1907                                  * after we've initiated a stream, but before
1908                                  * our ampdu_action routine has been called
1909                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1910                                  * for the ADDBA request.  So this packet can
1911                                  * go out with no risk of sequence number
1912                                  * mismatch.  No special handling is required.
1913                                  */
1914                         } else {
1915                                 /* Drop packets that would go out after the
1916                                  * ADDBA request was sent but before the ADDBA
1917                                  * response is received.  If we don't do this,
1918                                  * the recipient would probably receive it
1919                                  * after the ADDBA request with SSN 0.  This
1920                                  * will cause the recipient's BA receive window
1921                                  * to shift, which would cause the subsequent
1922                                  * packets in the BA stream to be discarded.
1923                                  * mac80211 queues our packets for us in this
1924                                  * case, so this is really just a safety check.
1925                                  */
1926                                 wiphy_warn(hw->wiphy,
1927                                            "Cannot send packet while ADDBA "
1928                                            "dialog is underway.\n");
1929                                 spin_unlock(&priv->stream_lock);
1930                                 dev_kfree_skb(skb);
1931                                 return;
1932                         }
1933                 } else {
1934                         /* Defer calling mwl8k_start_stream so that the current
1935                          * skb can go out before the ADDBA request.  This
1936                          * prevents sequence number mismatch at the recepient
1937                          * as described above.
1938                          */
1939                         if (mwl8k_ampdu_allowed(sta, tid)) {
1940                                 stream = mwl8k_add_stream(hw, sta, tid);
1941                                 if (stream != NULL)
1942                                         start_ba_session = true;
1943                         }
1944                 }
1945                 spin_unlock(&priv->stream_lock);
1946         }
1947
1948         dma = pci_map_single(priv->pdev, skb->data,
1949                                 skb->len, PCI_DMA_TODEVICE);
1950
1951         if (pci_dma_mapping_error(priv->pdev, dma)) {
1952                 wiphy_debug(hw->wiphy,
1953                             "failed to dma map skb, dropping TX frame.\n");
1954                 if (start_ba_session) {
1955                         spin_lock(&priv->stream_lock);
1956                         mwl8k_remove_stream(hw, stream);
1957                         spin_unlock(&priv->stream_lock);
1958                 }
1959                 dev_kfree_skb(skb);
1960                 return;
1961         }
1962
1963         spin_lock_bh(&priv->tx_lock);
1964
1965         txq = priv->txq + index;
1966
1967         /* Mgmt frames that go out frequently are probe
1968          * responses. Other mgmt frames got out relatively
1969          * infrequently. Hence reserve 2 buffers so that
1970          * other mgmt frames do not get dropped due to an
1971          * already queued probe response in one of the
1972          * reserved buffers.
1973          */
1974
1975         if (txq->len >= MWL8K_TX_DESCS - 2) {
1976                 if (mgmtframe == false ||
1977                         txq->len == MWL8K_TX_DESCS) {
1978                         if (start_ba_session) {
1979                                 spin_lock(&priv->stream_lock);
1980                                 mwl8k_remove_stream(hw, stream);
1981                                 spin_unlock(&priv->stream_lock);
1982                         }
1983                         spin_unlock_bh(&priv->tx_lock);
1984                         dev_kfree_skb(skb);
1985                         return;
1986                 }
1987         }
1988
1989         BUG_ON(txq->skb[txq->tail] != NULL);
1990         txq->skb[txq->tail] = skb;
1991
1992         tx = txq->txd + txq->tail;
1993         tx->data_rate = txdatarate;
1994         tx->tx_priority = txpriority;
1995         tx->qos_control = cpu_to_le16(qos);
1996         tx->pkt_phys_addr = cpu_to_le32(dma);
1997         tx->pkt_len = cpu_to_le16(skb->len);
1998         tx->rate_info = 0;
1999         if (!priv->ap_fw && tx_info->control.sta != NULL)
2000                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2001         else
2002                 tx->peer_id = 0;
2003
2004         if (priv->ap_fw)
2005                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2006                                                 MWL8K_HW_TIMER_REGISTER));
2007
2008         wmb();
2009         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2010
2011         txq->len++;
2012         priv->pending_tx_pkts++;
2013
2014         txq->tail++;
2015         if (txq->tail == MWL8K_TX_DESCS)
2016                 txq->tail = 0;
2017
2018         mwl8k_tx_start(priv);
2019
2020         spin_unlock_bh(&priv->tx_lock);
2021
2022         /* Initiate the ampdu session here */
2023         if (start_ba_session) {
2024                 spin_lock(&priv->stream_lock);
2025                 if (mwl8k_start_stream(hw, stream))
2026                         mwl8k_remove_stream(hw, stream);
2027                 spin_unlock(&priv->stream_lock);
2028         }
2029 }
2030
2031
2032 /*
2033  * Firmware access.
2034  *
2035  * We have the following requirements for issuing firmware commands:
2036  * - Some commands require that the packet transmit path is idle when
2037  *   the command is issued.  (For simplicity, we'll just quiesce the
2038  *   transmit path for every command.)
2039  * - There are certain sequences of commands that need to be issued to
2040  *   the hardware sequentially, with no other intervening commands.
2041  *
2042  * This leads to an implementation of a "firmware lock" as a mutex that
2043  * can be taken recursively, and which is taken by both the low-level
2044  * command submission function (mwl8k_post_cmd) as well as any users of
2045  * that function that require issuing of an atomic sequence of commands,
2046  * and quiesces the transmit path whenever it's taken.
2047  */
2048 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2049 {
2050         struct mwl8k_priv *priv = hw->priv;
2051
2052         if (priv->fw_mutex_owner != current) {
2053                 int rc;
2054
2055                 mutex_lock(&priv->fw_mutex);
2056                 ieee80211_stop_queues(hw);
2057
2058                 rc = mwl8k_tx_wait_empty(hw);
2059                 if (rc) {
2060                         ieee80211_wake_queues(hw);
2061                         mutex_unlock(&priv->fw_mutex);
2062
2063                         return rc;
2064                 }
2065
2066                 priv->fw_mutex_owner = current;
2067         }
2068
2069         priv->fw_mutex_depth++;
2070
2071         return 0;
2072 }
2073
2074 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2075 {
2076         struct mwl8k_priv *priv = hw->priv;
2077
2078         if (!--priv->fw_mutex_depth) {
2079                 ieee80211_wake_queues(hw);
2080                 priv->fw_mutex_owner = NULL;
2081                 mutex_unlock(&priv->fw_mutex);
2082         }
2083 }
2084
2085
2086 /*
2087  * Command processing.
2088  */
2089
2090 /* Timeout firmware commands after 10s */
2091 #define MWL8K_CMD_TIMEOUT_MS    10000
2092
2093 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2094 {
2095         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2096         struct mwl8k_priv *priv = hw->priv;
2097         void __iomem *regs = priv->regs;
2098         dma_addr_t dma_addr;
2099         unsigned int dma_size;
2100         int rc;
2101         unsigned long timeout = 0;
2102         u8 buf[32];
2103
2104         cmd->result = (__force __le16) 0xffff;
2105         dma_size = le16_to_cpu(cmd->length);
2106         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2107                                   PCI_DMA_BIDIRECTIONAL);
2108         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2109                 return -ENOMEM;
2110
2111         rc = mwl8k_fw_lock(hw);
2112         if (rc) {
2113                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2114                                                 PCI_DMA_BIDIRECTIONAL);
2115                 return rc;
2116         }
2117
2118         priv->hostcmd_wait = &cmd_wait;
2119         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2120         iowrite32(MWL8K_H2A_INT_DOORBELL,
2121                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2122         iowrite32(MWL8K_H2A_INT_DUMMY,
2123                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2124
2125         timeout = wait_for_completion_timeout(&cmd_wait,
2126                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2127
2128         priv->hostcmd_wait = NULL;
2129
2130         mwl8k_fw_unlock(hw);
2131
2132         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2133                                         PCI_DMA_BIDIRECTIONAL);
2134
2135         if (!timeout) {
2136                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2137                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2138                           MWL8K_CMD_TIMEOUT_MS);
2139                 rc = -ETIMEDOUT;
2140         } else {
2141                 int ms;
2142
2143                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2144
2145                 rc = cmd->result ? -EINVAL : 0;
2146                 if (rc)
2147                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2148                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2149                                   le16_to_cpu(cmd->result));
2150                 else if (ms > 2000)
2151                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2152                                      mwl8k_cmd_name(cmd->code,
2153                                                     buf, sizeof(buf)),
2154                                      ms);
2155         }
2156
2157         return rc;
2158 }
2159
2160 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2161                                  struct ieee80211_vif *vif,
2162                                  struct mwl8k_cmd_pkt *cmd)
2163 {
2164         if (vif != NULL)
2165                 cmd->macid = MWL8K_VIF(vif)->macid;
2166         return mwl8k_post_cmd(hw, cmd);
2167 }
2168
2169 /*
2170  * Setup code shared between STA and AP firmware images.
2171  */
2172 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2173 {
2174         struct mwl8k_priv *priv = hw->priv;
2175
2176         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2177         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2178
2179         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2180         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2181
2182         priv->band_24.band = IEEE80211_BAND_2GHZ;
2183         priv->band_24.channels = priv->channels_24;
2184         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2185         priv->band_24.bitrates = priv->rates_24;
2186         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2187
2188         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2189 }
2190
2191 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2192 {
2193         struct mwl8k_priv *priv = hw->priv;
2194
2195         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2196         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2197
2198         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2199         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2200
2201         priv->band_50.band = IEEE80211_BAND_5GHZ;
2202         priv->band_50.channels = priv->channels_50;
2203         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2204         priv->band_50.bitrates = priv->rates_50;
2205         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2206
2207         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2208 }
2209
2210 /*
2211  * CMD_GET_HW_SPEC (STA version).
2212  */
2213 struct mwl8k_cmd_get_hw_spec_sta {
2214         struct mwl8k_cmd_pkt header;
2215         __u8 hw_rev;
2216         __u8 host_interface;
2217         __le16 num_mcaddrs;
2218         __u8 perm_addr[ETH_ALEN];
2219         __le16 region_code;
2220         __le32 fw_rev;
2221         __le32 ps_cookie;
2222         __le32 caps;
2223         __u8 mcs_bitmap[16];
2224         __le32 rx_queue_ptr;
2225         __le32 num_tx_queues;
2226         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2227         __le32 caps2;
2228         __le32 num_tx_desc_per_queue;
2229         __le32 total_rxd;
2230 } __packed;
2231
2232 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2233 #define MWL8K_CAP_GREENFIELD            0x08000000
2234 #define MWL8K_CAP_AMPDU                 0x04000000
2235 #define MWL8K_CAP_RX_STBC               0x01000000
2236 #define MWL8K_CAP_TX_STBC               0x00800000
2237 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2238 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2239 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2240 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2241 #define MWL8K_CAP_DELAY_BA              0x00003000
2242 #define MWL8K_CAP_MIMO                  0x00000200
2243 #define MWL8K_CAP_40MHZ                 0x00000100
2244 #define MWL8K_CAP_BAND_MASK             0x00000007
2245 #define MWL8K_CAP_5GHZ                  0x00000004
2246 #define MWL8K_CAP_2GHZ4                 0x00000001
2247
2248 static void
2249 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2250                   struct ieee80211_supported_band *band, u32 cap)
2251 {
2252         int rx_streams;
2253         int tx_streams;
2254
2255         band->ht_cap.ht_supported = 1;
2256
2257         if (cap & MWL8K_CAP_MAX_AMSDU)
2258                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2259         if (cap & MWL8K_CAP_GREENFIELD)
2260                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2261         if (cap & MWL8K_CAP_AMPDU) {
2262                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2263                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2264                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2265         }
2266         if (cap & MWL8K_CAP_RX_STBC)
2267                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2268         if (cap & MWL8K_CAP_TX_STBC)
2269                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2270         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2271                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2272         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2273                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2274         if (cap & MWL8K_CAP_DELAY_BA)
2275                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2276         if (cap & MWL8K_CAP_40MHZ)
2277                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2278
2279         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2280         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2281
2282         band->ht_cap.mcs.rx_mask[0] = 0xff;
2283         if (rx_streams >= 2)
2284                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2285         if (rx_streams >= 3)
2286                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2287         band->ht_cap.mcs.rx_mask[4] = 0x01;
2288         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2289
2290         if (rx_streams != tx_streams) {
2291                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2292                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2293                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2294         }
2295 }
2296
2297 static void
2298 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2299 {
2300         struct mwl8k_priv *priv = hw->priv;
2301
2302         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2303                 mwl8k_setup_2ghz_band(hw);
2304                 if (caps & MWL8K_CAP_MIMO)
2305                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2306         }
2307
2308         if (caps & MWL8K_CAP_5GHZ) {
2309                 mwl8k_setup_5ghz_band(hw);
2310                 if (caps & MWL8K_CAP_MIMO)
2311                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2312         }
2313 }
2314
2315 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2316 {
2317         struct mwl8k_priv *priv = hw->priv;
2318         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2319         int rc;
2320         int i;
2321
2322         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2323         if (cmd == NULL)
2324                 return -ENOMEM;
2325
2326         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2327         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2328
2329         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2330         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2331         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2332         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2333         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2334                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2335         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2336         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2337
2338         rc = mwl8k_post_cmd(hw, &cmd->header);
2339
2340         if (!rc) {
2341                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2342                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2343                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2344                 priv->hw_rev = cmd->hw_rev;
2345                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2346                 priv->ap_macids_supported = 0x00000000;
2347                 priv->sta_macids_supported = 0x00000001;
2348         }
2349
2350         kfree(cmd);
2351         return rc;
2352 }
2353
2354 /*
2355  * CMD_GET_HW_SPEC (AP version).
2356  */
2357 struct mwl8k_cmd_get_hw_spec_ap {
2358         struct mwl8k_cmd_pkt header;
2359         __u8 hw_rev;
2360         __u8 host_interface;
2361         __le16 num_wcb;
2362         __le16 num_mcaddrs;
2363         __u8 perm_addr[ETH_ALEN];
2364         __le16 region_code;
2365         __le16 num_antenna;
2366         __le32 fw_rev;
2367         __le32 wcbbase0;
2368         __le32 rxwrptr;
2369         __le32 rxrdptr;
2370         __le32 ps_cookie;
2371         __le32 wcbbase1;
2372         __le32 wcbbase2;
2373         __le32 wcbbase3;
2374         __le32 fw_api_version;
2375         __le32 caps;
2376         __le32 num_of_ampdu_queues;
2377         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2378 } __packed;
2379
2380 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2381 {
2382         struct mwl8k_priv *priv = hw->priv;
2383         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2384         int rc, i;
2385         u32 api_version;
2386
2387         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2388         if (cmd == NULL)
2389                 return -ENOMEM;
2390
2391         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2392         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2393
2394         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2395         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2396
2397         rc = mwl8k_post_cmd(hw, &cmd->header);
2398
2399         if (!rc) {
2400                 int off;
2401
2402                 api_version = le32_to_cpu(cmd->fw_api_version);
2403                 if (priv->device_info->fw_api_ap != api_version) {
2404                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2405                                "  Expected %d got %d.\n", MWL8K_NAME,
2406                                priv->device_info->part_name,
2407                                priv->device_info->fw_api_ap,
2408                                api_version);
2409                         rc = -EINVAL;
2410                         goto done;
2411                 }
2412                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2413                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2414                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2415                 priv->hw_rev = cmd->hw_rev;
2416                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2417                 priv->ap_macids_supported = 0x000000ff;
2418                 priv->sta_macids_supported = 0x00000000;
2419                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2420                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2421                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2422                                    " but we only support %d.\n",
2423                                    priv->num_ampdu_queues,
2424                                    MWL8K_MAX_AMPDU_QUEUES);
2425                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2426                 }
2427                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2428                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2429
2430                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2431                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2432
2433                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2434                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2435                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2436                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2437
2438                 for (i = 0; i < priv->num_ampdu_queues; i++)
2439                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2440                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2441         }
2442
2443 done:
2444         kfree(cmd);
2445         return rc;
2446 }
2447
2448 /*
2449  * CMD_SET_HW_SPEC.
2450  */
2451 struct mwl8k_cmd_set_hw_spec {
2452         struct mwl8k_cmd_pkt header;
2453         __u8 hw_rev;
2454         __u8 host_interface;
2455         __le16 num_mcaddrs;
2456         __u8 perm_addr[ETH_ALEN];
2457         __le16 region_code;
2458         __le32 fw_rev;
2459         __le32 ps_cookie;
2460         __le32 caps;
2461         __le32 rx_queue_ptr;
2462         __le32 num_tx_queues;
2463         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2464         __le32 flags;
2465         __le32 num_tx_desc_per_queue;
2466         __le32 total_rxd;
2467 } __packed;
2468
2469 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2470  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2471  * the packets that are queued for more than 500ms, will be dropped in the
2472  * hardware. This helps minimizing the issues caused due to head-of-line
2473  * blocking where a slow client can hog the bandwidth and affect traffic to a
2474  * faster client.
2475  */
2476 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2477 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2478 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2479 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2480 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2481
2482 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2483 {
2484         struct mwl8k_priv *priv = hw->priv;
2485         struct mwl8k_cmd_set_hw_spec *cmd;
2486         int rc;
2487         int i;
2488
2489         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2490         if (cmd == NULL)
2491                 return -ENOMEM;
2492
2493         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2494         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2495
2496         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2497         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2498         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2499
2500         /*
2501          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2502          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2503          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2504          * priority is interpreted the right way in firmware.
2505          */
2506         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2507                 int j = mwl8k_tx_queues(priv) - 1 - i;
2508                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2509         }
2510
2511         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2512                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2513                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2514                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2515                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2516         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2517         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2518
2519         rc = mwl8k_post_cmd(hw, &cmd->header);
2520         kfree(cmd);
2521
2522         return rc;
2523 }
2524
2525 /*
2526  * CMD_MAC_MULTICAST_ADR.
2527  */
2528 struct mwl8k_cmd_mac_multicast_adr {
2529         struct mwl8k_cmd_pkt header;
2530         __le16 action;
2531         __le16 numaddr;
2532         __u8 addr[0][ETH_ALEN];
2533 };
2534
2535 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2536 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2537 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2538 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2539
2540 static struct mwl8k_cmd_pkt *
2541 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2542                               struct netdev_hw_addr_list *mc_list)
2543 {
2544         struct mwl8k_priv *priv = hw->priv;
2545         struct mwl8k_cmd_mac_multicast_adr *cmd;
2546         int size;
2547         int mc_count = 0;
2548
2549         if (mc_list)
2550                 mc_count = netdev_hw_addr_list_count(mc_list);
2551
2552         if (allmulti || mc_count > priv->num_mcaddrs) {
2553                 allmulti = 1;
2554                 mc_count = 0;
2555         }
2556
2557         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2558
2559         cmd = kzalloc(size, GFP_ATOMIC);
2560         if (cmd == NULL)
2561                 return NULL;
2562
2563         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2564         cmd->header.length = cpu_to_le16(size);
2565         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2566                                   MWL8K_ENABLE_RX_BROADCAST);
2567
2568         if (allmulti) {
2569                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2570         } else if (mc_count) {
2571                 struct netdev_hw_addr *ha;
2572                 int i = 0;
2573
2574                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2575                 cmd->numaddr = cpu_to_le16(mc_count);
2576                 netdev_hw_addr_list_for_each(ha, mc_list) {
2577                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2578                 }
2579         }
2580
2581         return &cmd->header;
2582 }
2583
2584 /*
2585  * CMD_GET_STAT.
2586  */
2587 struct mwl8k_cmd_get_stat {
2588         struct mwl8k_cmd_pkt header;
2589         __le32 stats[64];
2590 } __packed;
2591
2592 #define MWL8K_STAT_ACK_FAILURE  9
2593 #define MWL8K_STAT_RTS_FAILURE  12
2594 #define MWL8K_STAT_FCS_ERROR    24
2595 #define MWL8K_STAT_RTS_SUCCESS  11
2596
2597 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2598                               struct ieee80211_low_level_stats *stats)
2599 {
2600         struct mwl8k_cmd_get_stat *cmd;
2601         int rc;
2602
2603         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2604         if (cmd == NULL)
2605                 return -ENOMEM;
2606
2607         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2608         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2609
2610         rc = mwl8k_post_cmd(hw, &cmd->header);
2611         if (!rc) {
2612                 stats->dot11ACKFailureCount =
2613                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2614                 stats->dot11RTSFailureCount =
2615                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2616                 stats->dot11FCSErrorCount =
2617                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2618                 stats->dot11RTSSuccessCount =
2619                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2620         }
2621         kfree(cmd);
2622
2623         return rc;
2624 }
2625
2626 /*
2627  * CMD_RADIO_CONTROL.
2628  */
2629 struct mwl8k_cmd_radio_control {
2630         struct mwl8k_cmd_pkt header;
2631         __le16 action;
2632         __le16 control;
2633         __le16 radio_on;
2634 } __packed;
2635
2636 static int
2637 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2638 {
2639         struct mwl8k_priv *priv = hw->priv;
2640         struct mwl8k_cmd_radio_control *cmd;
2641         int rc;
2642
2643         if (enable == priv->radio_on && !force)
2644                 return 0;
2645
2646         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2647         if (cmd == NULL)
2648                 return -ENOMEM;
2649
2650         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2651         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2652         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2653         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2654         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2655
2656         rc = mwl8k_post_cmd(hw, &cmd->header);
2657         kfree(cmd);
2658
2659         if (!rc)
2660                 priv->radio_on = enable;
2661
2662         return rc;
2663 }
2664
2665 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2666 {
2667         return mwl8k_cmd_radio_control(hw, 0, 0);
2668 }
2669
2670 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2671 {
2672         return mwl8k_cmd_radio_control(hw, 1, 0);
2673 }
2674
2675 static int
2676 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2677 {
2678         struct mwl8k_priv *priv = hw->priv;
2679
2680         priv->radio_short_preamble = short_preamble;
2681
2682         return mwl8k_cmd_radio_control(hw, 1, 1);
2683 }
2684
2685 /*
2686  * CMD_RF_TX_POWER.
2687  */
2688 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2689
2690 struct mwl8k_cmd_rf_tx_power {
2691         struct mwl8k_cmd_pkt header;
2692         __le16 action;
2693         __le16 support_level;
2694         __le16 current_level;
2695         __le16 reserved;
2696         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2697 } __packed;
2698
2699 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2700 {
2701         struct mwl8k_cmd_rf_tx_power *cmd;
2702         int rc;
2703
2704         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2705         if (cmd == NULL)
2706                 return -ENOMEM;
2707
2708         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2709         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2710         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2711         cmd->support_level = cpu_to_le16(dBm);
2712
2713         rc = mwl8k_post_cmd(hw, &cmd->header);
2714         kfree(cmd);
2715
2716         return rc;
2717 }
2718
2719 /*
2720  * CMD_TX_POWER.
2721  */
2722 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2723
2724 struct mwl8k_cmd_tx_power {
2725         struct mwl8k_cmd_pkt header;
2726         __le16 action;
2727         __le16 band;
2728         __le16 channel;
2729         __le16 bw;
2730         __le16 sub_ch;
2731         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2732 } __packed;
2733
2734 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2735                                      struct ieee80211_conf *conf,
2736                                      unsigned short pwr)
2737 {
2738         struct ieee80211_channel *channel = conf->channel;
2739         struct mwl8k_cmd_tx_power *cmd;
2740         int rc;
2741         int i;
2742
2743         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2744         if (cmd == NULL)
2745                 return -ENOMEM;
2746
2747         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2748         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2749         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2750
2751         if (channel->band == IEEE80211_BAND_2GHZ)
2752                 cmd->band = cpu_to_le16(0x1);
2753         else if (channel->band == IEEE80211_BAND_5GHZ)
2754                 cmd->band = cpu_to_le16(0x4);
2755
2756         cmd->channel = channel->hw_value;
2757
2758         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2759             conf->channel_type == NL80211_CHAN_HT20) {
2760                 cmd->bw = cpu_to_le16(0x2);
2761         } else {
2762                 cmd->bw = cpu_to_le16(0x4);
2763                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2764                         cmd->sub_ch = cpu_to_le16(0x3);
2765                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2766                         cmd->sub_ch = cpu_to_le16(0x1);
2767         }
2768
2769         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2770                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2771
2772         rc = mwl8k_post_cmd(hw, &cmd->header);
2773         kfree(cmd);
2774
2775         return rc;
2776 }
2777
2778 /*
2779  * CMD_RF_ANTENNA.
2780  */
2781 struct mwl8k_cmd_rf_antenna {
2782         struct mwl8k_cmd_pkt header;
2783         __le16 antenna;
2784         __le16 mode;
2785 } __packed;
2786
2787 #define MWL8K_RF_ANTENNA_RX             1
2788 #define MWL8K_RF_ANTENNA_TX             2
2789
2790 static int
2791 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2792 {
2793         struct mwl8k_cmd_rf_antenna *cmd;
2794         int rc;
2795
2796         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2797         if (cmd == NULL)
2798                 return -ENOMEM;
2799
2800         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2801         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2802         cmd->antenna = cpu_to_le16(antenna);
2803         cmd->mode = cpu_to_le16(mask);
2804
2805         rc = mwl8k_post_cmd(hw, &cmd->header);
2806         kfree(cmd);
2807
2808         return rc;
2809 }
2810
2811 /*
2812  * CMD_SET_BEACON.
2813  */
2814 struct mwl8k_cmd_set_beacon {
2815         struct mwl8k_cmd_pkt header;
2816         __le16 beacon_len;
2817         __u8 beacon[0];
2818 };
2819
2820 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2821                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2822 {
2823         struct mwl8k_cmd_set_beacon *cmd;
2824         int rc;
2825
2826         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2827         if (cmd == NULL)
2828                 return -ENOMEM;
2829
2830         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2831         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2832         cmd->beacon_len = cpu_to_le16(len);
2833         memcpy(cmd->beacon, beacon, len);
2834
2835         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2836         kfree(cmd);
2837
2838         return rc;
2839 }
2840
2841 /*
2842  * CMD_SET_PRE_SCAN.
2843  */
2844 struct mwl8k_cmd_set_pre_scan {
2845         struct mwl8k_cmd_pkt header;
2846 } __packed;
2847
2848 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2849 {
2850         struct mwl8k_cmd_set_pre_scan *cmd;
2851         int rc;
2852
2853         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2854         if (cmd == NULL)
2855                 return -ENOMEM;
2856
2857         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2858         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2859
2860         rc = mwl8k_post_cmd(hw, &cmd->header);
2861         kfree(cmd);
2862
2863         return rc;
2864 }
2865
2866 /*
2867  * CMD_SET_POST_SCAN.
2868  */
2869 struct mwl8k_cmd_set_post_scan {
2870         struct mwl8k_cmd_pkt header;
2871         __le32 isibss;
2872         __u8 bssid[ETH_ALEN];
2873 } __packed;
2874
2875 static int
2876 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2877 {
2878         struct mwl8k_cmd_set_post_scan *cmd;
2879         int rc;
2880
2881         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2882         if (cmd == NULL)
2883                 return -ENOMEM;
2884
2885         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2886         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2887         cmd->isibss = 0;
2888         memcpy(cmd->bssid, mac, ETH_ALEN);
2889
2890         rc = mwl8k_post_cmd(hw, &cmd->header);
2891         kfree(cmd);
2892
2893         return rc;
2894 }
2895
2896 /*
2897  * CMD_SET_RF_CHANNEL.
2898  */
2899 struct mwl8k_cmd_set_rf_channel {
2900         struct mwl8k_cmd_pkt header;
2901         __le16 action;
2902         __u8 current_channel;
2903         __le32 channel_flags;
2904 } __packed;
2905
2906 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2907                                     struct ieee80211_conf *conf)
2908 {
2909         struct ieee80211_channel *channel = conf->channel;
2910         struct mwl8k_cmd_set_rf_channel *cmd;
2911         int rc;
2912
2913         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2914         if (cmd == NULL)
2915                 return -ENOMEM;
2916
2917         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2918         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2919         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2920         cmd->current_channel = channel->hw_value;
2921
2922         if (channel->band == IEEE80211_BAND_2GHZ)
2923                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2924         else if (channel->band == IEEE80211_BAND_5GHZ)
2925                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2926
2927         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2928             conf->channel_type == NL80211_CHAN_HT20)
2929                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2930         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2931                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2932         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2933                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2934
2935         rc = mwl8k_post_cmd(hw, &cmd->header);
2936         kfree(cmd);
2937
2938         return rc;
2939 }
2940
2941 /*
2942  * CMD_SET_AID.
2943  */
2944 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2945 #define MWL8K_FRAME_PROT_11G                            0x07
2946 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2947 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2948
2949 struct mwl8k_cmd_update_set_aid {
2950         struct  mwl8k_cmd_pkt header;
2951         __le16  aid;
2952
2953          /* AP's MAC address (BSSID) */
2954         __u8    bssid[ETH_ALEN];
2955         __le16  protection_mode;
2956         __u8    supp_rates[14];
2957 } __packed;
2958
2959 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2960 {
2961         int i;
2962         int j;
2963
2964         /*
2965          * Clear nonstandard rates 4 and 13.
2966          */
2967         mask &= 0x1fef;
2968
2969         for (i = 0, j = 0; i < 14; i++) {
2970                 if (mask & (1 << i))
2971                         rates[j++] = mwl8k_rates_24[i].hw_value;
2972         }
2973 }
2974
2975 static int
2976 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2977                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2978 {
2979         struct mwl8k_cmd_update_set_aid *cmd;
2980         u16 prot_mode;
2981         int rc;
2982
2983         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2984         if (cmd == NULL)
2985                 return -ENOMEM;
2986
2987         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2988         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2989         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2990         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2991
2992         if (vif->bss_conf.use_cts_prot) {
2993                 prot_mode = MWL8K_FRAME_PROT_11G;
2994         } else {
2995                 switch (vif->bss_conf.ht_operation_mode &
2996                         IEEE80211_HT_OP_MODE_PROTECTION) {
2997                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2998                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2999                         break;
3000                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3001                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3002                         break;
3003                 default:
3004                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3005                         break;
3006                 }
3007         }
3008         cmd->protection_mode = cpu_to_le16(prot_mode);
3009
3010         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3011
3012         rc = mwl8k_post_cmd(hw, &cmd->header);
3013         kfree(cmd);
3014
3015         return rc;
3016 }
3017
3018 /*
3019  * CMD_SET_RATE.
3020  */
3021 struct mwl8k_cmd_set_rate {
3022         struct  mwl8k_cmd_pkt header;
3023         __u8    legacy_rates[14];
3024
3025         /* Bitmap for supported MCS codes.  */
3026         __u8    mcs_set[16];
3027         __u8    reserved[16];
3028 } __packed;
3029
3030 static int
3031 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3032                    u32 legacy_rate_mask, u8 *mcs_rates)
3033 {
3034         struct mwl8k_cmd_set_rate *cmd;
3035         int rc;
3036
3037         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3038         if (cmd == NULL)
3039                 return -ENOMEM;
3040
3041         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3042         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3043         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3044         memcpy(cmd->mcs_set, mcs_rates, 16);
3045
3046         rc = mwl8k_post_cmd(hw, &cmd->header);
3047         kfree(cmd);
3048
3049         return rc;
3050 }
3051
3052 /*
3053  * CMD_FINALIZE_JOIN.
3054  */
3055 #define MWL8K_FJ_BEACON_MAXLEN  128
3056
3057 struct mwl8k_cmd_finalize_join {
3058         struct mwl8k_cmd_pkt header;
3059         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3060         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3061 } __packed;
3062
3063 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3064                                    int framelen, int dtim)
3065 {
3066         struct mwl8k_cmd_finalize_join *cmd;
3067         struct ieee80211_mgmt *payload = frame;
3068         int payload_len;
3069         int rc;
3070
3071         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3072         if (cmd == NULL)
3073                 return -ENOMEM;
3074
3075         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3076         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3077         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3078
3079         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3080         if (payload_len < 0)
3081                 payload_len = 0;
3082         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3083                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3084
3085         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3086
3087         rc = mwl8k_post_cmd(hw, &cmd->header);
3088         kfree(cmd);
3089
3090         return rc;
3091 }
3092
3093 /*
3094  * CMD_SET_RTS_THRESHOLD.
3095  */
3096 struct mwl8k_cmd_set_rts_threshold {
3097         struct mwl8k_cmd_pkt header;
3098         __le16 action;
3099         __le16 threshold;
3100 } __packed;
3101
3102 static int
3103 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3104 {
3105         struct mwl8k_cmd_set_rts_threshold *cmd;
3106         int rc;
3107
3108         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3109         if (cmd == NULL)
3110                 return -ENOMEM;
3111
3112         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3113         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3114         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3115         cmd->threshold = cpu_to_le16(rts_thresh);
3116
3117         rc = mwl8k_post_cmd(hw, &cmd->header);
3118         kfree(cmd);
3119
3120         return rc;
3121 }
3122
3123 /*
3124  * CMD_SET_SLOT.
3125  */
3126 struct mwl8k_cmd_set_slot {
3127         struct mwl8k_cmd_pkt header;
3128         __le16 action;
3129         __u8 short_slot;
3130 } __packed;
3131
3132 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3133 {
3134         struct mwl8k_cmd_set_slot *cmd;
3135         int rc;
3136
3137         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3138         if (cmd == NULL)
3139                 return -ENOMEM;
3140
3141         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3142         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3143         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3144         cmd->short_slot = short_slot_time;
3145
3146         rc = mwl8k_post_cmd(hw, &cmd->header);
3147         kfree(cmd);
3148
3149         return rc;
3150 }
3151
3152 /*
3153  * CMD_SET_EDCA_PARAMS.
3154  */
3155 struct mwl8k_cmd_set_edca_params {
3156         struct mwl8k_cmd_pkt header;
3157
3158         /* See MWL8K_SET_EDCA_XXX below */
3159         __le16 action;
3160
3161         /* TX opportunity in units of 32 us */
3162         __le16 txop;
3163
3164         union {
3165                 struct {
3166                         /* Log exponent of max contention period: 0...15 */
3167                         __le32 log_cw_max;
3168
3169                         /* Log exponent of min contention period: 0...15 */
3170                         __le32 log_cw_min;
3171
3172                         /* Adaptive interframe spacing in units of 32us */
3173                         __u8 aifs;
3174
3175                         /* TX queue to configure */
3176                         __u8 txq;
3177                 } ap;
3178                 struct {
3179                         /* Log exponent of max contention period: 0...15 */
3180                         __u8 log_cw_max;
3181
3182                         /* Log exponent of min contention period: 0...15 */
3183                         __u8 log_cw_min;
3184
3185                         /* Adaptive interframe spacing in units of 32us */
3186                         __u8 aifs;
3187
3188                         /* TX queue to configure */
3189                         __u8 txq;
3190                 } sta;
3191         };
3192 } __packed;
3193
3194 #define MWL8K_SET_EDCA_CW       0x01
3195 #define MWL8K_SET_EDCA_TXOP     0x02
3196 #define MWL8K_SET_EDCA_AIFS     0x04
3197
3198 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3199                                  MWL8K_SET_EDCA_TXOP | \
3200                                  MWL8K_SET_EDCA_AIFS)
3201
3202 static int
3203 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3204                           __u16 cw_min, __u16 cw_max,
3205                           __u8 aifs, __u16 txop)
3206 {
3207         struct mwl8k_priv *priv = hw->priv;
3208         struct mwl8k_cmd_set_edca_params *cmd;
3209         int rc;
3210
3211         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3212         if (cmd == NULL)
3213                 return -ENOMEM;
3214
3215         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3216         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3217         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3218         cmd->txop = cpu_to_le16(txop);
3219         if (priv->ap_fw) {
3220                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3221                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3222                 cmd->ap.aifs = aifs;
3223                 cmd->ap.txq = qnum;
3224         } else {
3225                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3226                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3227                 cmd->sta.aifs = aifs;
3228                 cmd->sta.txq = qnum;
3229         }
3230
3231         rc = mwl8k_post_cmd(hw, &cmd->header);
3232         kfree(cmd);
3233
3234         return rc;
3235 }
3236
3237 /*
3238  * CMD_SET_WMM_MODE.
3239  */
3240 struct mwl8k_cmd_set_wmm_mode {
3241         struct mwl8k_cmd_pkt header;
3242         __le16 action;
3243 } __packed;
3244
3245 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3246 {
3247         struct mwl8k_priv *priv = hw->priv;
3248         struct mwl8k_cmd_set_wmm_mode *cmd;
3249         int rc;
3250
3251         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3252         if (cmd == NULL)
3253                 return -ENOMEM;
3254
3255         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3256         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3257         cmd->action = cpu_to_le16(!!enable);
3258
3259         rc = mwl8k_post_cmd(hw, &cmd->header);
3260         kfree(cmd);
3261
3262         if (!rc)
3263                 priv->wmm_enabled = enable;
3264
3265         return rc;
3266 }
3267
3268 /*
3269  * CMD_MIMO_CONFIG.
3270  */
3271 struct mwl8k_cmd_mimo_config {
3272         struct mwl8k_cmd_pkt header;
3273         __le32 action;
3274         __u8 rx_antenna_map;
3275         __u8 tx_antenna_map;
3276 } __packed;
3277
3278 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3279 {
3280         struct mwl8k_cmd_mimo_config *cmd;
3281         int rc;
3282
3283         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3284         if (cmd == NULL)
3285                 return -ENOMEM;
3286
3287         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3288         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3289         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3290         cmd->rx_antenna_map = rx;
3291         cmd->tx_antenna_map = tx;
3292
3293         rc = mwl8k_post_cmd(hw, &cmd->header);
3294         kfree(cmd);
3295
3296         return rc;
3297 }
3298
3299 /*
3300  * CMD_USE_FIXED_RATE (STA version).
3301  */
3302 struct mwl8k_cmd_use_fixed_rate_sta {
3303         struct mwl8k_cmd_pkt header;
3304         __le32 action;
3305         __le32 allow_rate_drop;
3306         __le32 num_rates;
3307         struct {
3308                 __le32 is_ht_rate;
3309                 __le32 enable_retry;
3310                 __le32 rate;
3311                 __le32 retry_count;
3312         } rate_entry[8];
3313         __le32 rate_type;
3314         __le32 reserved1;
3315         __le32 reserved2;
3316 } __packed;
3317
3318 #define MWL8K_USE_AUTO_RATE     0x0002
3319 #define MWL8K_UCAST_RATE        0
3320
3321 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3322 {
3323         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3324         int rc;
3325
3326         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3327         if (cmd == NULL)
3328                 return -ENOMEM;
3329
3330         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3331         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3332         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3333         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3334
3335         rc = mwl8k_post_cmd(hw, &cmd->header);
3336         kfree(cmd);
3337
3338         return rc;
3339 }
3340
3341 /*
3342  * CMD_USE_FIXED_RATE (AP version).
3343  */
3344 struct mwl8k_cmd_use_fixed_rate_ap {
3345         struct mwl8k_cmd_pkt header;
3346         __le32 action;
3347         __le32 allow_rate_drop;
3348         __le32 num_rates;
3349         struct mwl8k_rate_entry_ap {
3350                 __le32 is_ht_rate;
3351                 __le32 enable_retry;
3352                 __le32 rate;
3353                 __le32 retry_count;
3354         } rate_entry[4];
3355         u8 multicast_rate;
3356         u8 multicast_rate_type;
3357         u8 management_rate;
3358 } __packed;
3359
3360 static int
3361 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3362 {
3363         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3364         int rc;
3365
3366         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3367         if (cmd == NULL)
3368                 return -ENOMEM;
3369
3370         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3371         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3372         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3373         cmd->multicast_rate = mcast;
3374         cmd->management_rate = mgmt;
3375
3376         rc = mwl8k_post_cmd(hw, &cmd->header);
3377         kfree(cmd);
3378
3379         return rc;
3380 }
3381
3382 /*
3383  * CMD_ENABLE_SNIFFER.
3384  */
3385 struct mwl8k_cmd_enable_sniffer {
3386         struct mwl8k_cmd_pkt header;
3387         __le32 action;
3388 } __packed;
3389
3390 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3391 {
3392         struct mwl8k_cmd_enable_sniffer *cmd;
3393         int rc;
3394
3395         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3396         if (cmd == NULL)
3397                 return -ENOMEM;
3398
3399         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3400         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3401         cmd->action = cpu_to_le32(!!enable);
3402
3403         rc = mwl8k_post_cmd(hw, &cmd->header);
3404         kfree(cmd);
3405
3406         return rc;
3407 }
3408
3409 /*
3410  * CMD_SET_MAC_ADDR.
3411  */
3412 struct mwl8k_cmd_set_mac_addr {
3413         struct mwl8k_cmd_pkt header;
3414         union {
3415                 struct {
3416                         __le16 mac_type;
3417                         __u8 mac_addr[ETH_ALEN];
3418                 } mbss;
3419                 __u8 mac_addr[ETH_ALEN];
3420         };
3421 } __packed;
3422
3423 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3424 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3425 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3426 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3427
3428 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3429                                   struct ieee80211_vif *vif, u8 *mac)
3430 {
3431         struct mwl8k_priv *priv = hw->priv;
3432         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3433         struct mwl8k_cmd_set_mac_addr *cmd;
3434         int mac_type;
3435         int rc;
3436
3437         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3438         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3439                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3440                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3441                 else
3442                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3443         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3444                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3445                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3446                 else
3447                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3448         }
3449
3450         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3451         if (cmd == NULL)
3452                 return -ENOMEM;
3453
3454         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3455         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3456         if (priv->ap_fw) {
3457                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3458                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3459         } else {
3460                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3461         }
3462
3463         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3464         kfree(cmd);
3465
3466         return rc;
3467 }
3468
3469 /*
3470  * CMD_SET_RATEADAPT_MODE.
3471  */
3472 struct mwl8k_cmd_set_rate_adapt_mode {
3473         struct mwl8k_cmd_pkt header;
3474         __le16 action;
3475         __le16 mode;
3476 } __packed;
3477
3478 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3479 {
3480         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3481         int rc;
3482
3483         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3484         if (cmd == NULL)
3485                 return -ENOMEM;
3486
3487         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3488         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3489         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3490         cmd->mode = cpu_to_le16(mode);
3491
3492         rc = mwl8k_post_cmd(hw, &cmd->header);
3493         kfree(cmd);
3494
3495         return rc;
3496 }
3497
3498 /*
3499  * CMD_GET_WATCHDOG_BITMAP.
3500  */
3501 struct mwl8k_cmd_get_watchdog_bitmap {
3502         struct mwl8k_cmd_pkt header;
3503         u8      bitmap;
3504 } __packed;
3505
3506 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3507 {
3508         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3509         int rc;
3510
3511         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3512         if (cmd == NULL)
3513                 return -ENOMEM;
3514
3515         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3516         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3517
3518         rc = mwl8k_post_cmd(hw, &cmd->header);
3519         if (!rc)
3520                 *bitmap = cmd->bitmap;
3521
3522         kfree(cmd);
3523
3524         return rc;
3525 }
3526
3527 #define INVALID_BA      0xAA
3528 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3529 {
3530         int rc;
3531         u8 bitmap = 0, stream_index;
3532         struct mwl8k_ampdu_stream *streams;
3533         struct mwl8k_priv *priv =
3534                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3535
3536         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3537         if (rc)
3538                 return;
3539
3540         if (bitmap == INVALID_BA)
3541                 return;
3542
3543         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3544         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3545
3546         BUG_ON(stream_index >= priv->num_ampdu_queues);
3547
3548         streams = &priv->ampdu[stream_index];
3549
3550         if (streams->state == AMPDU_STREAM_ACTIVE)
3551                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3552
3553         return;
3554 }
3555
3556
3557 /*
3558  * CMD_BSS_START.
3559  */
3560 struct mwl8k_cmd_bss_start {
3561         struct mwl8k_cmd_pkt header;
3562         __le32 enable;
3563 } __packed;
3564
3565 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3566                                struct ieee80211_vif *vif, int enable)
3567 {
3568         struct mwl8k_cmd_bss_start *cmd;
3569         int rc;
3570
3571         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3572         if (cmd == NULL)
3573                 return -ENOMEM;
3574
3575         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3576         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3577         cmd->enable = cpu_to_le32(enable);
3578
3579         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3580         kfree(cmd);
3581
3582         return rc;
3583 }
3584
3585 /*
3586  * CMD_BASTREAM.
3587  */
3588
3589 /*
3590  * UPSTREAM is tx direction
3591  */
3592 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3593 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3594
3595 enum ba_stream_action_type {
3596         MWL8K_BA_CREATE,
3597         MWL8K_BA_UPDATE,
3598         MWL8K_BA_DESTROY,
3599         MWL8K_BA_FLUSH,
3600         MWL8K_BA_CHECK,
3601 };
3602
3603
3604 struct mwl8k_create_ba_stream {
3605         __le32  flags;
3606         __le32  idle_thrs;
3607         __le32  bar_thrs;
3608         __le32  window_size;
3609         u8      peer_mac_addr[6];
3610         u8      dialog_token;
3611         u8      tid;
3612         u8      queue_id;
3613         u8      param_info;
3614         __le32  ba_context;
3615         u8      reset_seq_no_flag;
3616         __le16  curr_seq_no;
3617         u8      sta_src_mac_addr[6];
3618 } __packed;
3619
3620 struct mwl8k_destroy_ba_stream {
3621         __le32  flags;
3622         __le32  ba_context;
3623 } __packed;
3624
3625 struct mwl8k_cmd_bastream {
3626         struct mwl8k_cmd_pkt    header;
3627         __le32  action;
3628         union {
3629                 struct mwl8k_create_ba_stream   create_params;
3630                 struct mwl8k_destroy_ba_stream  destroy_params;
3631         };
3632 } __packed;
3633
3634 static int
3635 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3636 {
3637         struct mwl8k_cmd_bastream *cmd;
3638         int rc;
3639
3640         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3641         if (cmd == NULL)
3642                 return -ENOMEM;
3643
3644         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3645         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3646
3647         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3648
3649         cmd->create_params.queue_id = stream->idx;
3650         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3651                ETH_ALEN);
3652         cmd->create_params.tid = stream->tid;
3653
3654         cmd->create_params.flags =
3655                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3656                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3657
3658         rc = mwl8k_post_cmd(hw, &cmd->header);
3659
3660         kfree(cmd);
3661
3662         return rc;
3663 }
3664
3665 static int
3666 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3667                 u8 buf_size)
3668 {
3669         struct mwl8k_cmd_bastream *cmd;
3670         int rc;
3671
3672         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3673         if (cmd == NULL)
3674                 return -ENOMEM;
3675
3676
3677         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3678         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3679
3680         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3681
3682         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3683         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3684         cmd->create_params.queue_id = stream->idx;
3685
3686         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3687         cmd->create_params.tid = stream->tid;
3688         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3689         cmd->create_params.reset_seq_no_flag = 1;
3690
3691         cmd->create_params.param_info =
3692                 (stream->sta->ht_cap.ampdu_factor &
3693                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3694                 ((stream->sta->ht_cap.ampdu_density << 2) &
3695                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3696
3697         cmd->create_params.flags =
3698                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3699                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3700
3701         rc = mwl8k_post_cmd(hw, &cmd->header);
3702
3703         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3704                 stream->sta->addr, stream->tid);
3705         kfree(cmd);
3706
3707         return rc;
3708 }
3709
3710 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3711                              struct mwl8k_ampdu_stream *stream)
3712 {
3713         struct mwl8k_cmd_bastream *cmd;
3714
3715         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3716         if (cmd == NULL)
3717                 return;
3718
3719         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3720         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3721         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3722
3723         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3724         mwl8k_post_cmd(hw, &cmd->header);
3725
3726         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3727
3728         kfree(cmd);
3729 }
3730
3731 /*
3732  * CMD_SET_NEW_STN.
3733  */
3734 struct mwl8k_cmd_set_new_stn {
3735         struct mwl8k_cmd_pkt header;
3736         __le16 aid;
3737         __u8 mac_addr[6];
3738         __le16 stn_id;
3739         __le16 action;
3740         __le16 rsvd;
3741         __le32 legacy_rates;
3742         __u8 ht_rates[4];
3743         __le16 cap_info;
3744         __le16 ht_capabilities_info;
3745         __u8 mac_ht_param_info;
3746         __u8 rev;
3747         __u8 control_channel;
3748         __u8 add_channel;
3749         __le16 op_mode;
3750         __le16 stbc;
3751         __u8 add_qos_info;
3752         __u8 is_qos_sta;
3753         __le32 fw_sta_ptr;
3754 } __packed;
3755
3756 #define MWL8K_STA_ACTION_ADD            0
3757 #define MWL8K_STA_ACTION_REMOVE         2
3758
3759 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3760                                      struct ieee80211_vif *vif,
3761                                      struct ieee80211_sta *sta)
3762 {
3763         struct mwl8k_cmd_set_new_stn *cmd;
3764         u32 rates;
3765         int rc;
3766
3767         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3768         if (cmd == NULL)
3769                 return -ENOMEM;
3770
3771         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3772         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3773         cmd->aid = cpu_to_le16(sta->aid);
3774         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3775         cmd->stn_id = cpu_to_le16(sta->aid);
3776         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3777         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3778                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3779         else
3780                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3781         cmd->legacy_rates = cpu_to_le32(rates);
3782         if (sta->ht_cap.ht_supported) {
3783                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3784                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3785                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3786                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3787                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3788                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3789                         ((sta->ht_cap.ampdu_density & 7) << 2);
3790                 cmd->is_qos_sta = 1;
3791         }
3792
3793         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3794         kfree(cmd);
3795
3796         return rc;
3797 }
3798
3799 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3800                                           struct ieee80211_vif *vif)
3801 {
3802         struct mwl8k_cmd_set_new_stn *cmd;
3803         int rc;
3804
3805         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3806         if (cmd == NULL)
3807                 return -ENOMEM;
3808
3809         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3810         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3811         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3812
3813         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3814         kfree(cmd);
3815
3816         return rc;
3817 }
3818
3819 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3820                                      struct ieee80211_vif *vif, u8 *addr)
3821 {
3822         struct mwl8k_cmd_set_new_stn *cmd;
3823         int rc;
3824
3825         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3826         if (cmd == NULL)
3827                 return -ENOMEM;
3828
3829         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3830         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3831         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3832         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3833
3834         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3835         kfree(cmd);
3836
3837         return rc;
3838 }
3839
3840 /*
3841  * CMD_UPDATE_ENCRYPTION.
3842  */
3843
3844 #define MAX_ENCR_KEY_LENGTH     16
3845 #define MIC_KEY_LENGTH          8
3846
3847 struct mwl8k_cmd_update_encryption {
3848         struct mwl8k_cmd_pkt header;
3849
3850         __le32 action;
3851         __le32 reserved;
3852         __u8 mac_addr[6];
3853         __u8 encr_type;
3854
3855 } __packed;
3856
3857 struct mwl8k_cmd_set_key {
3858         struct mwl8k_cmd_pkt header;
3859
3860         __le32 action;
3861         __le32 reserved;
3862         __le16 length;
3863         __le16 key_type_id;
3864         __le32 key_info;
3865         __le32 key_id;
3866         __le16 key_len;
3867         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3868         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3869         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3870         __le16 tkip_rsc_low;
3871         __le32 tkip_rsc_high;
3872         __le16 tkip_tsc_low;
3873         __le32 tkip_tsc_high;
3874         __u8 mac_addr[6];
3875 } __packed;
3876
3877 enum {
3878         MWL8K_ENCR_ENABLE,
3879         MWL8K_ENCR_SET_KEY,
3880         MWL8K_ENCR_REMOVE_KEY,
3881         MWL8K_ENCR_SET_GROUP_KEY,
3882 };
3883
3884 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3885 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3886 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3887 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3888 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3889
3890 enum {
3891         MWL8K_ALG_WEP,
3892         MWL8K_ALG_TKIP,
3893         MWL8K_ALG_CCMP,
3894 };
3895
3896 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3897 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3898 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3899 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3900 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3901
3902 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3903                                               struct ieee80211_vif *vif,
3904                                               u8 *addr,
3905                                               u8 encr_type)
3906 {
3907         struct mwl8k_cmd_update_encryption *cmd;
3908         int rc;
3909
3910         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3911         if (cmd == NULL)
3912                 return -ENOMEM;
3913
3914         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3915         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3916         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3917         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3918         cmd->encr_type = encr_type;
3919
3920         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3921         kfree(cmd);
3922
3923         return rc;
3924 }
3925
3926 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3927                                                 u8 *addr,
3928                                                 struct ieee80211_key_conf *key)
3929 {
3930         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3931         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3932         cmd->length = cpu_to_le16(sizeof(*cmd) -
3933                                 offsetof(struct mwl8k_cmd_set_key, length));
3934         cmd->key_id = cpu_to_le32(key->keyidx);
3935         cmd->key_len = cpu_to_le16(key->keylen);
3936         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3937
3938         switch (key->cipher) {
3939         case WLAN_CIPHER_SUITE_WEP40:
3940         case WLAN_CIPHER_SUITE_WEP104:
3941                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3942                 if (key->keyidx == 0)
3943                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3944
3945                 break;
3946         case WLAN_CIPHER_SUITE_TKIP:
3947                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3948                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3949                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3950                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3951                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3952                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3953                 break;
3954         case WLAN_CIPHER_SUITE_CCMP:
3955                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3956                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3957                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3958                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3959                 break;
3960         default:
3961                 return -ENOTSUPP;
3962         }
3963
3964         return 0;
3965 }
3966
3967 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3968                                                 struct ieee80211_vif *vif,
3969                                                 u8 *addr,
3970                                                 struct ieee80211_key_conf *key)
3971 {
3972         struct mwl8k_cmd_set_key *cmd;
3973         int rc;
3974         int keymlen;
3975         u32 action;
3976         u8 idx;
3977         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3978
3979         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3980         if (cmd == NULL)
3981                 return -ENOMEM;
3982
3983         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3984         if (rc < 0)
3985                 goto done;
3986
3987         idx = key->keyidx;
3988
3989         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3990                 action = MWL8K_ENCR_SET_KEY;
3991         else
3992                 action = MWL8K_ENCR_SET_GROUP_KEY;
3993
3994         switch (key->cipher) {
3995         case WLAN_CIPHER_SUITE_WEP40:
3996         case WLAN_CIPHER_SUITE_WEP104:
3997                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3998                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3999                                                 sizeof(*key) + key->keylen);
4000                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4001                 }
4002
4003                 keymlen = key->keylen;
4004                 action = MWL8K_ENCR_SET_KEY;
4005                 break;
4006         case WLAN_CIPHER_SUITE_TKIP:
4007                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4008                 break;
4009         case WLAN_CIPHER_SUITE_CCMP:
4010                 keymlen = key->keylen;
4011                 break;
4012         default:
4013                 rc = -ENOTSUPP;
4014                 goto done;
4015         }
4016
4017         memcpy(cmd->key_material, key->key, keymlen);
4018         cmd->action = cpu_to_le32(action);
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_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4028                                                 struct ieee80211_vif *vif,
4029                                                 u8 *addr,
4030                                                 struct ieee80211_key_conf *key)
4031 {
4032         struct mwl8k_cmd_set_key *cmd;
4033         int rc;
4034         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4035
4036         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4037         if (cmd == NULL)
4038                 return -ENOMEM;
4039
4040         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4041         if (rc < 0)
4042                 goto done;
4043
4044         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4045                         WLAN_CIPHER_SUITE_WEP104)
4046                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4047
4048         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4049
4050         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4051 done:
4052         kfree(cmd);
4053
4054         return rc;
4055 }
4056
4057 static int mwl8k_set_key(struct ieee80211_hw *hw,
4058                          enum set_key_cmd cmd_param,
4059                          struct ieee80211_vif *vif,
4060                          struct ieee80211_sta *sta,
4061                          struct ieee80211_key_conf *key)
4062 {
4063         int rc = 0;
4064         u8 encr_type;
4065         u8 *addr;
4066         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4067
4068         if (vif->type == NL80211_IFTYPE_STATION)
4069                 return -EOPNOTSUPP;
4070
4071         if (sta == NULL)
4072                 addr = hw->wiphy->perm_addr;
4073         else
4074                 addr = sta->addr;
4075
4076         if (cmd_param == SET_KEY) {
4077                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4078                 if (rc)
4079                         goto out;
4080
4081                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4082                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4083                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4084                 else
4085                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4086
4087                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4088                                                                 encr_type);
4089                 if (rc)
4090                         goto out;
4091
4092                 mwl8k_vif->is_hw_crypto_enabled = true;
4093
4094         } else {
4095                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4096
4097                 if (rc)
4098                         goto out;
4099
4100                 mwl8k_vif->is_hw_crypto_enabled = false;
4101
4102         }
4103 out:
4104         return rc;
4105 }
4106
4107 /*
4108  * CMD_UPDATE_STADB.
4109  */
4110 struct ewc_ht_info {
4111         __le16  control1;
4112         __le16  control2;
4113         __le16  control3;
4114 } __packed;
4115
4116 struct peer_capability_info {
4117         /* Peer type - AP vs. STA.  */
4118         __u8    peer_type;
4119
4120         /* Basic 802.11 capabilities from assoc resp.  */
4121         __le16  basic_caps;
4122
4123         /* Set if peer supports 802.11n high throughput (HT).  */
4124         __u8    ht_support;
4125
4126         /* Valid if HT is supported.  */
4127         __le16  ht_caps;
4128         __u8    extended_ht_caps;
4129         struct ewc_ht_info      ewc_info;
4130
4131         /* Legacy rate table. Intersection of our rates and peer rates.  */
4132         __u8    legacy_rates[12];
4133
4134         /* HT rate table. Intersection of our rates and peer rates.  */
4135         __u8    ht_rates[16];
4136         __u8    pad[16];
4137
4138         /* If set, interoperability mode, no proprietary extensions.  */
4139         __u8    interop;
4140         __u8    pad2;
4141         __u8    station_id;
4142         __le16  amsdu_enabled;
4143 } __packed;
4144
4145 struct mwl8k_cmd_update_stadb {
4146         struct mwl8k_cmd_pkt header;
4147
4148         /* See STADB_ACTION_TYPE */
4149         __le32  action;
4150
4151         /* Peer MAC address */
4152         __u8    peer_addr[ETH_ALEN];
4153
4154         __le32  reserved;
4155
4156         /* Peer info - valid during add/update.  */
4157         struct peer_capability_info     peer_info;
4158 } __packed;
4159
4160 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4161 #define MWL8K_STA_DB_DEL_ENTRY          2
4162
4163 /* Peer Entry flags - used to define the type of the peer node */
4164 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4165
4166 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4167                                       struct ieee80211_vif *vif,
4168                                       struct ieee80211_sta *sta)
4169 {
4170         struct mwl8k_cmd_update_stadb *cmd;
4171         struct peer_capability_info *p;
4172         u32 rates;
4173         int rc;
4174
4175         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4176         if (cmd == NULL)
4177                 return -ENOMEM;
4178
4179         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4180         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4181         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4182         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4183
4184         p = &cmd->peer_info;
4185         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4186         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4187         p->ht_support = sta->ht_cap.ht_supported;
4188         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4189         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4190                 ((sta->ht_cap.ampdu_density & 7) << 2);
4191         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4192                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4193         else
4194                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4195         legacy_rate_mask_to_array(p->legacy_rates, rates);
4196         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4197         p->interop = 1;
4198         p->amsdu_enabled = 0;
4199
4200         rc = mwl8k_post_cmd(hw, &cmd->header);
4201         kfree(cmd);
4202
4203         return rc ? rc : p->station_id;
4204 }
4205
4206 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4207                                       struct ieee80211_vif *vif, u8 *addr)
4208 {
4209         struct mwl8k_cmd_update_stadb *cmd;
4210         int rc;
4211
4212         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4213         if (cmd == NULL)
4214                 return -ENOMEM;
4215
4216         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4217         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4218         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4219         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4220
4221         rc = mwl8k_post_cmd(hw, &cmd->header);
4222         kfree(cmd);
4223
4224         return rc;
4225 }
4226
4227
4228 /*
4229  * Interrupt handling.
4230  */
4231 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4232 {
4233         struct ieee80211_hw *hw = dev_id;
4234         struct mwl8k_priv *priv = hw->priv;
4235         u32 status;
4236
4237         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4238         if (!status)
4239                 return IRQ_NONE;
4240
4241         if (status & MWL8K_A2H_INT_TX_DONE) {
4242                 status &= ~MWL8K_A2H_INT_TX_DONE;
4243                 tasklet_schedule(&priv->poll_tx_task);
4244         }
4245
4246         if (status & MWL8K_A2H_INT_RX_READY) {
4247                 status &= ~MWL8K_A2H_INT_RX_READY;
4248                 tasklet_schedule(&priv->poll_rx_task);
4249         }
4250
4251         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4252                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4253                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4254         }
4255
4256         if (status)
4257                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4258
4259         if (status & MWL8K_A2H_INT_OPC_DONE) {
4260                 if (priv->hostcmd_wait != NULL)
4261                         complete(priv->hostcmd_wait);
4262         }
4263
4264         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4265                 if (!mutex_is_locked(&priv->fw_mutex) &&
4266                     priv->radio_on && priv->pending_tx_pkts)
4267                         mwl8k_tx_start(priv);
4268         }
4269
4270         return IRQ_HANDLED;
4271 }
4272
4273 static void mwl8k_tx_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         int i;
4279
4280         limit = 32;
4281
4282         spin_lock_bh(&priv->tx_lock);
4283
4284         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4285                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4286
4287         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4288                 complete(priv->tx_wait);
4289                 priv->tx_wait = NULL;
4290         }
4291
4292         spin_unlock_bh(&priv->tx_lock);
4293
4294         if (limit) {
4295                 writel(~MWL8K_A2H_INT_TX_DONE,
4296                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4297         } else {
4298                 tasklet_schedule(&priv->poll_tx_task);
4299         }
4300 }
4301
4302 static void mwl8k_rx_poll(unsigned long data)
4303 {
4304         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4305         struct mwl8k_priv *priv = hw->priv;
4306         int limit;
4307
4308         limit = 32;
4309         limit -= rxq_process(hw, 0, limit);
4310         limit -= rxq_refill(hw, 0, limit);
4311
4312         if (limit) {
4313                 writel(~MWL8K_A2H_INT_RX_READY,
4314                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4315         } else {
4316                 tasklet_schedule(&priv->poll_rx_task);
4317         }
4318 }
4319
4320
4321 /*
4322  * Core driver operations.
4323  */
4324 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4325 {
4326         struct mwl8k_priv *priv = hw->priv;
4327         int index = skb_get_queue_mapping(skb);
4328
4329         if (!priv->radio_on) {
4330                 wiphy_debug(hw->wiphy,
4331                             "dropped TX frame since radio disabled\n");
4332                 dev_kfree_skb(skb);
4333                 return;
4334         }
4335
4336         mwl8k_txq_xmit(hw, index, skb);
4337 }
4338
4339 static int mwl8k_start(struct ieee80211_hw *hw)
4340 {
4341         struct mwl8k_priv *priv = hw->priv;
4342         int rc;
4343
4344         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4345                          IRQF_SHARED, MWL8K_NAME, hw);
4346         if (rc) {
4347                 priv->irq = -1;
4348                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4349                 return -EIO;
4350         }
4351         priv->irq = priv->pdev->irq;
4352
4353         /* Enable TX reclaim and RX tasklets.  */
4354         tasklet_enable(&priv->poll_tx_task);
4355         tasklet_enable(&priv->poll_rx_task);
4356
4357         /* Enable interrupts */
4358         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4359         iowrite32(MWL8K_A2H_EVENTS,
4360                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4361
4362         rc = mwl8k_fw_lock(hw);
4363         if (!rc) {
4364                 rc = mwl8k_cmd_radio_enable(hw);
4365
4366                 if (!priv->ap_fw) {
4367                         if (!rc)
4368                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4369
4370                         if (!rc)
4371                                 rc = mwl8k_cmd_set_pre_scan(hw);
4372
4373                         if (!rc)
4374                                 rc = mwl8k_cmd_set_post_scan(hw,
4375                                                 "\x00\x00\x00\x00\x00\x00");
4376                 }
4377
4378                 if (!rc)
4379                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4380
4381                 if (!rc)
4382                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4383
4384                 mwl8k_fw_unlock(hw);
4385         }
4386
4387         if (rc) {
4388                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4389                 free_irq(priv->pdev->irq, hw);
4390                 priv->irq = -1;
4391                 tasklet_disable(&priv->poll_tx_task);
4392                 tasklet_disable(&priv->poll_rx_task);
4393         }
4394
4395         return rc;
4396 }
4397
4398 static void mwl8k_stop(struct ieee80211_hw *hw)
4399 {
4400         struct mwl8k_priv *priv = hw->priv;
4401         int i;
4402
4403         mwl8k_cmd_radio_disable(hw);
4404
4405         ieee80211_stop_queues(hw);
4406
4407         /* Disable interrupts */
4408         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4409         if (priv->irq != -1) {
4410                 free_irq(priv->pdev->irq, hw);
4411                 priv->irq = -1;
4412         }
4413
4414         /* Stop finalize join worker */
4415         cancel_work_sync(&priv->finalize_join_worker);
4416         cancel_work_sync(&priv->watchdog_ba_handle);
4417         if (priv->beacon_skb != NULL)
4418                 dev_kfree_skb(priv->beacon_skb);
4419
4420         /* Stop TX reclaim and RX tasklets.  */
4421         tasklet_disable(&priv->poll_tx_task);
4422         tasklet_disable(&priv->poll_rx_task);
4423
4424         /* Return all skbs to mac80211 */
4425         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4426                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4427 }
4428
4429 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4430
4431 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4432                                struct ieee80211_vif *vif)
4433 {
4434         struct mwl8k_priv *priv = hw->priv;
4435         struct mwl8k_vif *mwl8k_vif;
4436         u32 macids_supported;
4437         int macid, rc;
4438         struct mwl8k_device_info *di;
4439
4440         /*
4441          * Reject interface creation if sniffer mode is active, as
4442          * STA operation is mutually exclusive with hardware sniffer
4443          * mode.  (Sniffer mode is only used on STA firmware.)
4444          */
4445         if (priv->sniffer_enabled) {
4446                 wiphy_info(hw->wiphy,
4447                            "unable to create STA interface because sniffer mode is enabled\n");
4448                 return -EINVAL;
4449         }
4450
4451         di = priv->device_info;
4452         switch (vif->type) {
4453         case NL80211_IFTYPE_AP:
4454                 if (!priv->ap_fw && di->fw_image_ap) {
4455                         /* we must load the ap fw to meet this request */
4456                         if (!list_empty(&priv->vif_list))
4457                                 return -EBUSY;
4458                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4459                         if (rc)
4460                                 return rc;
4461                 }
4462                 macids_supported = priv->ap_macids_supported;
4463                 break;
4464         case NL80211_IFTYPE_STATION:
4465                 if (priv->ap_fw && di->fw_image_sta) {
4466                         /* we must load the sta fw to meet this request */
4467                         if (!list_empty(&priv->vif_list))
4468                                 return -EBUSY;
4469                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4470                         if (rc)
4471                                 return rc;
4472                 }
4473                 macids_supported = priv->sta_macids_supported;
4474                 break;
4475         default:
4476                 return -EINVAL;
4477         }
4478
4479         macid = ffs(macids_supported & ~priv->macids_used);
4480         if (!macid--)
4481                 return -EBUSY;
4482
4483         /* Setup driver private area. */
4484         mwl8k_vif = MWL8K_VIF(vif);
4485         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4486         mwl8k_vif->vif = vif;
4487         mwl8k_vif->macid = macid;
4488         mwl8k_vif->seqno = 0;
4489         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4490         mwl8k_vif->is_hw_crypto_enabled = false;
4491
4492         /* Set the mac address.  */
4493         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4494
4495         if (priv->ap_fw)
4496                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4497
4498         priv->macids_used |= 1 << mwl8k_vif->macid;
4499         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4500
4501         return 0;
4502 }
4503
4504 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4505                                    struct ieee80211_vif *vif)
4506 {
4507         struct mwl8k_priv *priv = hw->priv;
4508         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4509
4510         if (priv->ap_fw)
4511                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4512
4513         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4514
4515         priv->macids_used &= ~(1 << mwl8k_vif->macid);
4516         list_del(&mwl8k_vif->list);
4517 }
4518
4519 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4520 {
4521         struct ieee80211_conf *conf = &hw->conf;
4522         struct mwl8k_priv *priv = hw->priv;
4523         int rc;
4524
4525         if (conf->flags & IEEE80211_CONF_IDLE) {
4526                 mwl8k_cmd_radio_disable(hw);
4527                 return 0;
4528         }
4529
4530         rc = mwl8k_fw_lock(hw);
4531         if (rc)
4532                 return rc;
4533
4534         rc = mwl8k_cmd_radio_enable(hw);
4535         if (rc)
4536                 goto out;
4537
4538         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4539         if (rc)
4540                 goto out;
4541
4542         if (conf->power_level > 18)
4543                 conf->power_level = 18;
4544
4545         if (priv->ap_fw) {
4546
4547                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4548                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4549                         if (rc)
4550                                 goto out;
4551                 }
4552
4553                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4554                 if (rc)
4555                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4556                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4557                 if (rc)
4558                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4559
4560         } else {
4561                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4562                 if (rc)
4563                         goto out;
4564                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4565         }
4566
4567 out:
4568         mwl8k_fw_unlock(hw);
4569
4570         return rc;
4571 }
4572
4573 static void
4574 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4575                            struct ieee80211_bss_conf *info, u32 changed)
4576 {
4577         struct mwl8k_priv *priv = hw->priv;
4578         u32 ap_legacy_rates = 0;
4579         u8 ap_mcs_rates[16];
4580         int rc;
4581
4582         if (mwl8k_fw_lock(hw))
4583                 return;
4584
4585         /*
4586          * No need to capture a beacon if we're no longer associated.
4587          */
4588         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4589                 priv->capture_beacon = false;
4590
4591         /*
4592          * Get the AP's legacy and MCS rates.
4593          */
4594         if (vif->bss_conf.assoc) {
4595                 struct ieee80211_sta *ap;
4596
4597                 rcu_read_lock();
4598
4599                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4600                 if (ap == NULL) {
4601                         rcu_read_unlock();
4602                         goto out;
4603                 }
4604
4605                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4606                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4607                 } else {
4608                         ap_legacy_rates =
4609                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4610                 }
4611                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4612
4613                 rcu_read_unlock();
4614         }
4615
4616         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4617                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4618                 if (rc)
4619                         goto out;
4620
4621                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4622                 if (rc)
4623                         goto out;
4624         }
4625
4626         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4627                 rc = mwl8k_set_radio_preamble(hw,
4628                                 vif->bss_conf.use_short_preamble);
4629                 if (rc)
4630                         goto out;
4631         }
4632
4633         if (changed & BSS_CHANGED_ERP_SLOT) {
4634                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4635                 if (rc)
4636                         goto out;
4637         }
4638
4639         if (vif->bss_conf.assoc &&
4640             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4641                         BSS_CHANGED_HT))) {
4642                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4643                 if (rc)
4644                         goto out;
4645         }
4646
4647         if (vif->bss_conf.assoc &&
4648             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4649                 /*
4650                  * Finalize the join.  Tell rx handler to process
4651                  * next beacon from our BSSID.
4652                  */
4653                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4654                 priv->capture_beacon = true;
4655         }
4656
4657 out:
4658         mwl8k_fw_unlock(hw);
4659 }
4660
4661 static void
4662 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4663                           struct ieee80211_bss_conf *info, u32 changed)
4664 {
4665         int rc;
4666
4667         if (mwl8k_fw_lock(hw))
4668                 return;
4669
4670         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4671                 rc = mwl8k_set_radio_preamble(hw,
4672                                 vif->bss_conf.use_short_preamble);
4673                 if (rc)
4674                         goto out;
4675         }
4676
4677         if (changed & BSS_CHANGED_BASIC_RATES) {
4678                 int idx;
4679                 int rate;
4680
4681                 /*
4682                  * Use lowest supported basic rate for multicasts
4683                  * and management frames (such as probe responses --
4684                  * beacons will always go out at 1 Mb/s).
4685                  */
4686                 idx = ffs(vif->bss_conf.basic_rates);
4687                 if (idx)
4688                         idx--;
4689
4690                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4691                         rate = mwl8k_rates_24[idx].hw_value;
4692                 else
4693                         rate = mwl8k_rates_50[idx].hw_value;
4694
4695                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4696         }
4697
4698         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4699                 struct sk_buff *skb;
4700
4701                 skb = ieee80211_beacon_get(hw, vif);
4702                 if (skb != NULL) {
4703                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4704                         kfree_skb(skb);
4705                 }
4706         }
4707
4708         if (changed & BSS_CHANGED_BEACON_ENABLED)
4709                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4710
4711 out:
4712         mwl8k_fw_unlock(hw);
4713 }
4714
4715 static void
4716 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4717                        struct ieee80211_bss_conf *info, u32 changed)
4718 {
4719         struct mwl8k_priv *priv = hw->priv;
4720
4721         if (!priv->ap_fw)
4722                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4723         else
4724                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4725 }
4726
4727 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4728                                    struct netdev_hw_addr_list *mc_list)
4729 {
4730         struct mwl8k_cmd_pkt *cmd;
4731
4732         /*
4733          * Synthesize and return a command packet that programs the
4734          * hardware multicast address filter.  At this point we don't
4735          * know whether FIF_ALLMULTI is being requested, but if it is,
4736          * we'll end up throwing this packet away and creating a new
4737          * one in mwl8k_configure_filter().
4738          */
4739         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4740
4741         return (unsigned long)cmd;
4742 }
4743
4744 static int
4745 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4746                                unsigned int changed_flags,
4747                                unsigned int *total_flags)
4748 {
4749         struct mwl8k_priv *priv = hw->priv;
4750
4751         /*
4752          * Hardware sniffer mode is mutually exclusive with STA
4753          * operation, so refuse to enable sniffer mode if a STA
4754          * interface is active.
4755          */
4756         if (!list_empty(&priv->vif_list)) {
4757                 if (net_ratelimit())
4758                         wiphy_info(hw->wiphy,
4759                                    "not enabling sniffer mode because STA interface is active\n");
4760                 return 0;
4761         }
4762
4763         if (!priv->sniffer_enabled) {
4764                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4765                         return 0;
4766                 priv->sniffer_enabled = true;
4767         }
4768
4769         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4770                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4771                         FIF_OTHER_BSS;
4772
4773         return 1;
4774 }
4775
4776 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4777 {
4778         if (!list_empty(&priv->vif_list))
4779                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4780
4781         return NULL;
4782 }
4783
4784 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4785                                    unsigned int changed_flags,
4786                                    unsigned int *total_flags,
4787                                    u64 multicast)
4788 {
4789         struct mwl8k_priv *priv = hw->priv;
4790         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4791
4792         /*
4793          * AP firmware doesn't allow fine-grained control over
4794          * the receive filter.
4795          */
4796         if (priv->ap_fw) {
4797                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4798                 kfree(cmd);
4799                 return;
4800         }
4801
4802         /*
4803          * Enable hardware sniffer mode if FIF_CONTROL or
4804          * FIF_OTHER_BSS is requested.
4805          */
4806         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4807             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4808                 kfree(cmd);
4809                 return;
4810         }
4811
4812         /* Clear unsupported feature flags */
4813         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4814
4815         if (mwl8k_fw_lock(hw)) {
4816                 kfree(cmd);
4817                 return;
4818         }
4819
4820         if (priv->sniffer_enabled) {
4821                 mwl8k_cmd_enable_sniffer(hw, 0);
4822                 priv->sniffer_enabled = false;
4823         }
4824
4825         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4826                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4827                         /*
4828                          * Disable the BSS filter.
4829                          */
4830                         mwl8k_cmd_set_pre_scan(hw);
4831                 } else {
4832                         struct mwl8k_vif *mwl8k_vif;
4833                         const u8 *bssid;
4834
4835                         /*
4836                          * Enable the BSS filter.
4837                          *
4838                          * If there is an active STA interface, use that
4839                          * interface's BSSID, otherwise use a dummy one
4840                          * (where the OUI part needs to be nonzero for
4841                          * the BSSID to be accepted by POST_SCAN).
4842                          */
4843                         mwl8k_vif = mwl8k_first_vif(priv);
4844                         if (mwl8k_vif != NULL)
4845                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4846                         else
4847                                 bssid = "\x01\x00\x00\x00\x00\x00";
4848
4849                         mwl8k_cmd_set_post_scan(hw, bssid);
4850                 }
4851         }
4852
4853         /*
4854          * If FIF_ALLMULTI is being requested, throw away the command
4855          * packet that ->prepare_multicast() built and replace it with
4856          * a command packet that enables reception of all multicast
4857          * packets.
4858          */
4859         if (*total_flags & FIF_ALLMULTI) {
4860                 kfree(cmd);
4861                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4862         }
4863
4864         if (cmd != NULL) {
4865                 mwl8k_post_cmd(hw, cmd);
4866                 kfree(cmd);
4867         }
4868
4869         mwl8k_fw_unlock(hw);
4870 }
4871
4872 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4873 {
4874         return mwl8k_cmd_set_rts_threshold(hw, value);
4875 }
4876
4877 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4878                             struct ieee80211_vif *vif,
4879                             struct ieee80211_sta *sta)
4880 {
4881         struct mwl8k_priv *priv = hw->priv;
4882
4883         if (priv->ap_fw)
4884                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4885         else
4886                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4887 }
4888
4889 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4890                          struct ieee80211_vif *vif,
4891                          struct ieee80211_sta *sta)
4892 {
4893         struct mwl8k_priv *priv = hw->priv;
4894         int ret;
4895         int i;
4896         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4897         struct ieee80211_key_conf *key;
4898
4899         if (!priv->ap_fw) {
4900                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4901                 if (ret >= 0) {
4902                         MWL8K_STA(sta)->peer_id = ret;
4903                         if (sta->ht_cap.ht_supported)
4904                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
4905                         ret = 0;
4906                 }
4907
4908         } else {
4909                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4910         }
4911
4912         for (i = 0; i < NUM_WEP_KEYS; i++) {
4913                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4914                 if (mwl8k_vif->wep_key_conf[i].enabled)
4915                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4916         }
4917         return ret;
4918 }
4919
4920 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4921                          const struct ieee80211_tx_queue_params *params)
4922 {
4923         struct mwl8k_priv *priv = hw->priv;
4924         int rc;
4925
4926         rc = mwl8k_fw_lock(hw);
4927         if (!rc) {
4928                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4929                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4930
4931                 if (!priv->wmm_enabled)
4932                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4933
4934                 if (!rc) {
4935                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4936                         rc = mwl8k_cmd_set_edca_params(hw, q,
4937                                                        params->cw_min,
4938                                                        params->cw_max,
4939                                                        params->aifs,
4940                                                        params->txop);
4941                 }
4942
4943                 mwl8k_fw_unlock(hw);
4944         }
4945
4946         return rc;
4947 }
4948
4949 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4950                            struct ieee80211_low_level_stats *stats)
4951 {
4952         return mwl8k_cmd_get_stat(hw, stats);
4953 }
4954
4955 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4956                                 struct survey_info *survey)
4957 {
4958         struct mwl8k_priv *priv = hw->priv;
4959         struct ieee80211_conf *conf = &hw->conf;
4960
4961         if (idx != 0)
4962                 return -ENOENT;
4963
4964         survey->channel = conf->channel;
4965         survey->filled = SURVEY_INFO_NOISE_DBM;
4966         survey->noise = priv->noise;
4967
4968         return 0;
4969 }
4970
4971 #define MAX_AMPDU_ATTEMPTS 5
4972
4973 static int
4974 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4975                    enum ieee80211_ampdu_mlme_action action,
4976                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4977                    u8 buf_size)
4978 {
4979
4980         int i, rc = 0;
4981         struct mwl8k_priv *priv = hw->priv;
4982         struct mwl8k_ampdu_stream *stream;
4983         u8 *addr = sta->addr;
4984
4985         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4986                 return -ENOTSUPP;
4987
4988         spin_lock(&priv->stream_lock);
4989         stream = mwl8k_lookup_stream(hw, addr, tid);
4990
4991         switch (action) {
4992         case IEEE80211_AMPDU_RX_START:
4993         case IEEE80211_AMPDU_RX_STOP:
4994                 break;
4995         case IEEE80211_AMPDU_TX_START:
4996                 /* By the time we get here the hw queues may contain outgoing
4997                  * packets for this RA/TID that are not part of this BA
4998                  * session.  The hw will assign sequence numbers to these
4999                  * packets as they go out.  So if we query the hw for its next
5000                  * sequence number and use that for the SSN here, it may end up
5001                  * being wrong, which will lead to sequence number mismatch at
5002                  * the recipient.  To avoid this, we reset the sequence number
5003                  * to O for the first MPDU in this BA stream.
5004                  */
5005                 *ssn = 0;
5006                 if (stream == NULL) {
5007                         /* This means that somebody outside this driver called
5008                          * ieee80211_start_tx_ba_session.  This is unexpected
5009                          * because we do our own rate control.  Just warn and
5010                          * move on.
5011                          */
5012                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5013                                    "Proceeding anyway.\n", __func__);
5014                         stream = mwl8k_add_stream(hw, sta, tid);
5015                 }
5016                 if (stream == NULL) {
5017                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5018                         rc = -EBUSY;
5019                         break;
5020                 }
5021                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5022
5023                 /* Release the lock before we do the time consuming stuff */
5024                 spin_unlock(&priv->stream_lock);
5025                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5026                         rc = mwl8k_check_ba(hw, stream);
5027
5028                         if (!rc)
5029                                 break;
5030                         /*
5031                          * HW queues take time to be flushed, give them
5032                          * sufficient time
5033                          */
5034
5035                         msleep(1000);
5036                 }
5037                 spin_lock(&priv->stream_lock);
5038                 if (rc) {
5039                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5040                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5041                         mwl8k_remove_stream(hw, stream);
5042                         rc = -EBUSY;
5043                         break;
5044                 }
5045                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5046                 break;
5047         case IEEE80211_AMPDU_TX_STOP:
5048                 if (stream == NULL)
5049                         break;
5050                 if (stream->state == AMPDU_STREAM_ACTIVE) {
5051                         spin_unlock(&priv->stream_lock);
5052                         mwl8k_destroy_ba(hw, stream);
5053                         spin_lock(&priv->stream_lock);
5054                 }
5055                 mwl8k_remove_stream(hw, stream);
5056                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5057                 break;
5058         case IEEE80211_AMPDU_TX_OPERATIONAL:
5059                 BUG_ON(stream == NULL);
5060                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5061                 spin_unlock(&priv->stream_lock);
5062                 rc = mwl8k_create_ba(hw, stream, buf_size);
5063                 spin_lock(&priv->stream_lock);
5064                 if (!rc)
5065                         stream->state = AMPDU_STREAM_ACTIVE;
5066                 else {
5067                         spin_unlock(&priv->stream_lock);
5068                         mwl8k_destroy_ba(hw, stream);
5069                         spin_lock(&priv->stream_lock);
5070                         wiphy_debug(hw->wiphy,
5071                                 "Failed adding stream for sta %pM tid %d\n",
5072                                 addr, tid);
5073                         mwl8k_remove_stream(hw, stream);
5074                 }
5075                 break;
5076
5077         default:
5078                 rc = -ENOTSUPP;
5079         }
5080
5081         spin_unlock(&priv->stream_lock);
5082         return rc;
5083 }
5084
5085 static const struct ieee80211_ops mwl8k_ops = {
5086         .tx                     = mwl8k_tx,
5087         .start                  = mwl8k_start,
5088         .stop                   = mwl8k_stop,
5089         .add_interface          = mwl8k_add_interface,
5090         .remove_interface       = mwl8k_remove_interface,
5091         .config                 = mwl8k_config,
5092         .bss_info_changed       = mwl8k_bss_info_changed,
5093         .prepare_multicast      = mwl8k_prepare_multicast,
5094         .configure_filter       = mwl8k_configure_filter,
5095         .set_key                = mwl8k_set_key,
5096         .set_rts_threshold      = mwl8k_set_rts_threshold,
5097         .sta_add                = mwl8k_sta_add,
5098         .sta_remove             = mwl8k_sta_remove,
5099         .conf_tx                = mwl8k_conf_tx,
5100         .get_stats              = mwl8k_get_stats,
5101         .get_survey             = mwl8k_get_survey,
5102         .ampdu_action           = mwl8k_ampdu_action,
5103 };
5104
5105 static void mwl8k_finalize_join_worker(struct work_struct *work)
5106 {
5107         struct mwl8k_priv *priv =
5108                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5109         struct sk_buff *skb = priv->beacon_skb;
5110         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5111         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5112         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5113                                          mgmt->u.beacon.variable, len);
5114         int dtim_period = 1;
5115
5116         if (tim && tim[1] >= 2)
5117                 dtim_period = tim[3];
5118
5119         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5120
5121         dev_kfree_skb(skb);
5122         priv->beacon_skb = NULL;
5123 }
5124
5125 enum {
5126         MWL8363 = 0,
5127         MWL8687,
5128         MWL8366,
5129 };
5130
5131 #define MWL8K_8366_AP_FW_API 2
5132 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5133 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5134
5135 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5136         [MWL8363] = {
5137                 .part_name      = "88w8363",
5138                 .helper_image   = "mwl8k/helper_8363.fw",
5139                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5140         },
5141         [MWL8687] = {
5142                 .part_name      = "88w8687",
5143                 .helper_image   = "mwl8k/helper_8687.fw",
5144                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5145         },
5146         [MWL8366] = {
5147                 .part_name      = "88w8366",
5148                 .helper_image   = "mwl8k/helper_8366.fw",
5149                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5150                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5151                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5152                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5153         },
5154 };
5155
5156 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5157 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5158 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5159 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5160 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5161 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5162 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5163
5164 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5165         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5166         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5167         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5168         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5169         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5170         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5171         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5172         { },
5173 };
5174 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5175
5176 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5177 {
5178         int rc;
5179         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5180                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5181                priv->fw_pref, priv->fw_alt);
5182         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5183         if (rc) {
5184                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5185                        pci_name(priv->pdev), priv->fw_alt);
5186                 return rc;
5187         }
5188         return 0;
5189 }
5190
5191 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5192 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5193 {
5194         struct mwl8k_priv *priv = context;
5195         struct mwl8k_device_info *di = priv->device_info;
5196         int rc;
5197
5198         switch (priv->fw_state) {
5199         case FW_STATE_INIT:
5200                 if (!fw) {
5201                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5202                                pci_name(priv->pdev), di->helper_image);
5203                         goto fail;
5204                 }
5205                 priv->fw_helper = fw;
5206                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5207                                       true);
5208                 if (rc && priv->fw_alt) {
5209                         rc = mwl8k_request_alt_fw(priv);
5210                         if (rc)
5211                                 goto fail;
5212                         priv->fw_state = FW_STATE_LOADING_ALT;
5213                 } else if (rc)
5214                         goto fail;
5215                 else
5216                         priv->fw_state = FW_STATE_LOADING_PREF;
5217                 break;
5218
5219         case FW_STATE_LOADING_PREF:
5220                 if (!fw) {
5221                         if (priv->fw_alt) {
5222                                 rc = mwl8k_request_alt_fw(priv);
5223                                 if (rc)
5224                                         goto fail;
5225                                 priv->fw_state = FW_STATE_LOADING_ALT;
5226                         } else
5227                                 goto fail;
5228                 } else {
5229                         priv->fw_ucode = fw;
5230                         rc = mwl8k_firmware_load_success(priv);
5231                         if (rc)
5232                                 goto fail;
5233                         else
5234                                 complete(&priv->firmware_loading_complete);
5235                 }
5236                 break;
5237
5238         case FW_STATE_LOADING_ALT:
5239                 if (!fw) {
5240                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5241                                pci_name(priv->pdev), di->helper_image);
5242                         goto fail;
5243                 }
5244                 priv->fw_ucode = fw;
5245                 rc = mwl8k_firmware_load_success(priv);
5246                 if (rc)
5247                         goto fail;
5248                 else
5249                         complete(&priv->firmware_loading_complete);
5250                 break;
5251
5252         default:
5253                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5254                        MWL8K_NAME, priv->fw_state);
5255                 BUG_ON(1);
5256         }
5257
5258         return;
5259
5260 fail:
5261         priv->fw_state = FW_STATE_ERROR;
5262         complete(&priv->firmware_loading_complete);
5263         device_release_driver(&priv->pdev->dev);
5264         mwl8k_release_firmware(priv);
5265 }
5266
5267 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5268                                bool nowait)
5269 {
5270         struct mwl8k_priv *priv = hw->priv;
5271         int rc;
5272
5273         /* Reset firmware and hardware */
5274         mwl8k_hw_reset(priv);
5275
5276         /* Ask userland hotplug daemon for the device firmware */
5277         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5278         if (rc) {
5279                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5280                 return rc;
5281         }
5282
5283         if (nowait)
5284                 return rc;
5285
5286         /* Load firmware into hardware */
5287         rc = mwl8k_load_firmware(hw);
5288         if (rc)
5289                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5290
5291         /* Reclaim memory once firmware is successfully loaded */
5292         mwl8k_release_firmware(priv);
5293
5294         return rc;
5295 }
5296
5297 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5298 {
5299         struct mwl8k_priv *priv = hw->priv;
5300         int rc = 0;
5301         int i;
5302
5303         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5304                 rc = mwl8k_txq_init(hw, i);
5305                 if (rc)
5306                         break;
5307                 if (priv->ap_fw)
5308                         iowrite32(priv->txq[i].txd_dma,
5309                                   priv->sram + priv->txq_offset[i]);
5310         }
5311         return rc;
5312 }
5313
5314 /* initialize hw after successfully loading a firmware image */
5315 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5316 {
5317         struct mwl8k_priv *priv = hw->priv;
5318         int rc = 0;
5319         int i;
5320
5321         if (priv->ap_fw) {
5322                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5323                 if (priv->rxd_ops == NULL) {
5324                         wiphy_err(hw->wiphy,
5325                                   "Driver does not have AP firmware image support for this hardware\n");
5326                         goto err_stop_firmware;
5327                 }
5328         } else {
5329                 priv->rxd_ops = &rxd_sta_ops;
5330         }
5331
5332         priv->sniffer_enabled = false;
5333         priv->wmm_enabled = false;
5334         priv->pending_tx_pkts = 0;
5335
5336         rc = mwl8k_rxq_init(hw, 0);
5337         if (rc)
5338                 goto err_stop_firmware;
5339         rxq_refill(hw, 0, INT_MAX);
5340
5341         /* For the sta firmware, we need to know the dma addresses of tx queues
5342          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5343          * prior to issuing this command.  But for the AP case, we learn the
5344          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5345          * case we must initialize the tx queues after.
5346          */
5347         priv->num_ampdu_queues = 0;
5348         if (!priv->ap_fw) {
5349                 rc = mwl8k_init_txqs(hw);
5350                 if (rc)
5351                         goto err_free_queues;
5352         }
5353
5354         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5355         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5356         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5357                   MWL8K_A2H_INT_BA_WATCHDOG,
5358                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5359         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5360                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5361
5362         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5363                          IRQF_SHARED, MWL8K_NAME, hw);
5364         if (rc) {
5365                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5366                 goto err_free_queues;
5367         }
5368
5369         memset(priv->ampdu, 0, sizeof(priv->ampdu));
5370
5371         /*
5372          * Temporarily enable interrupts.  Initial firmware host
5373          * commands use interrupts and avoid polling.  Disable
5374          * interrupts when done.
5375          */
5376         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5377
5378         /* Get config data, mac addrs etc */
5379         if (priv->ap_fw) {
5380                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5381                 if (!rc)
5382                         rc = mwl8k_init_txqs(hw);
5383                 if (!rc)
5384                         rc = mwl8k_cmd_set_hw_spec(hw);
5385         } else {
5386                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5387         }
5388         if (rc) {
5389                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5390                 goto err_free_irq;
5391         }
5392
5393         /* Turn radio off */
5394         rc = mwl8k_cmd_radio_disable(hw);
5395         if (rc) {
5396                 wiphy_err(hw->wiphy, "Cannot disable\n");
5397                 goto err_free_irq;
5398         }
5399
5400         /* Clear MAC address */
5401         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5402         if (rc) {
5403                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5404                 goto err_free_irq;
5405         }
5406
5407         /* Disable interrupts */
5408         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5409         free_irq(priv->pdev->irq, hw);
5410
5411         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5412                    priv->device_info->part_name,
5413                    priv->hw_rev, hw->wiphy->perm_addr,
5414                    priv->ap_fw ? "AP" : "STA",
5415                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5416                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5417
5418         return 0;
5419
5420 err_free_irq:
5421         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5422         free_irq(priv->pdev->irq, hw);
5423
5424 err_free_queues:
5425         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5426                 mwl8k_txq_deinit(hw, i);
5427         mwl8k_rxq_deinit(hw, 0);
5428
5429 err_stop_firmware:
5430         mwl8k_hw_reset(priv);
5431
5432         return rc;
5433 }
5434
5435 /*
5436  * invoke mwl8k_reload_firmware to change the firmware image after the device
5437  * has already been registered
5438  */
5439 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5440 {
5441         int i, rc = 0;
5442         struct mwl8k_priv *priv = hw->priv;
5443
5444         mwl8k_stop(hw);
5445         mwl8k_rxq_deinit(hw, 0);
5446
5447         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5448                 mwl8k_txq_deinit(hw, i);
5449
5450         rc = mwl8k_init_firmware(hw, fw_image, false);
5451         if (rc)
5452                 goto fail;
5453
5454         rc = mwl8k_probe_hw(hw);
5455         if (rc)
5456                 goto fail;
5457
5458         rc = mwl8k_start(hw);
5459         if (rc)
5460                 goto fail;
5461
5462         rc = mwl8k_config(hw, ~0);
5463         if (rc)
5464                 goto fail;
5465
5466         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5467                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5468                 if (rc)
5469                         goto fail;
5470         }
5471
5472         return rc;
5473
5474 fail:
5475         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5476         return rc;
5477 }
5478
5479 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5480 {
5481         struct ieee80211_hw *hw = priv->hw;
5482         int i, rc;
5483
5484         rc = mwl8k_load_firmware(hw);
5485         mwl8k_release_firmware(priv);
5486         if (rc) {
5487                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5488                 return rc;
5489         }
5490
5491         /*
5492          * Extra headroom is the size of the required DMA header
5493          * minus the size of the smallest 802.11 frame (CTS frame).
5494          */
5495         hw->extra_tx_headroom =
5496                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5497
5498         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5499
5500         hw->channel_change_time = 10;
5501
5502         hw->queues = MWL8K_TX_WMM_QUEUES;
5503
5504         /* Set rssi values to dBm */
5505         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5506         hw->vif_data_size = sizeof(struct mwl8k_vif);
5507         hw->sta_data_size = sizeof(struct mwl8k_sta);
5508
5509         priv->macids_used = 0;
5510         INIT_LIST_HEAD(&priv->vif_list);
5511
5512         /* Set default radio state and preamble */
5513         priv->radio_on = 0;
5514         priv->radio_short_preamble = 0;
5515
5516         /* Finalize join worker */
5517         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5518         /* Handle watchdog ba events */
5519         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5520
5521         /* TX reclaim and RX tasklets.  */
5522         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5523         tasklet_disable(&priv->poll_tx_task);
5524         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5525         tasklet_disable(&priv->poll_rx_task);
5526
5527         /* Power management cookie */
5528         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5529         if (priv->cookie == NULL)
5530                 return -ENOMEM;
5531
5532         mutex_init(&priv->fw_mutex);
5533         priv->fw_mutex_owner = NULL;
5534         priv->fw_mutex_depth = 0;
5535         priv->hostcmd_wait = NULL;
5536
5537         spin_lock_init(&priv->tx_lock);
5538
5539         spin_lock_init(&priv->stream_lock);
5540
5541         priv->tx_wait = NULL;
5542
5543         rc = mwl8k_probe_hw(hw);
5544         if (rc)
5545                 goto err_free_cookie;
5546
5547         hw->wiphy->interface_modes = 0;
5548         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5549                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5550         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5551                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5552
5553         rc = ieee80211_register_hw(hw);
5554         if (rc) {
5555                 wiphy_err(hw->wiphy, "Cannot register device\n");
5556                 goto err_unprobe_hw;
5557         }
5558
5559         return 0;
5560
5561 err_unprobe_hw:
5562         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5563                 mwl8k_txq_deinit(hw, i);
5564         mwl8k_rxq_deinit(hw, 0);
5565
5566 err_free_cookie:
5567         if (priv->cookie != NULL)
5568                 pci_free_consistent(priv->pdev, 4,
5569                                 priv->cookie, priv->cookie_dma);
5570
5571         return rc;
5572 }
5573 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5574                                  const struct pci_device_id *id)
5575 {
5576         static int printed_version;
5577         struct ieee80211_hw *hw;
5578         struct mwl8k_priv *priv;
5579         struct mwl8k_device_info *di;
5580         int rc;
5581
5582         if (!printed_version) {
5583                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5584                 printed_version = 1;
5585         }
5586
5587
5588         rc = pci_enable_device(pdev);
5589         if (rc) {
5590                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5591                        MWL8K_NAME);
5592                 return rc;
5593         }
5594
5595         rc = pci_request_regions(pdev, MWL8K_NAME);
5596         if (rc) {
5597                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5598                        MWL8K_NAME);
5599                 goto err_disable_device;
5600         }
5601
5602         pci_set_master(pdev);
5603
5604
5605         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5606         if (hw == NULL) {
5607                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5608                 rc = -ENOMEM;
5609                 goto err_free_reg;
5610         }
5611
5612         SET_IEEE80211_DEV(hw, &pdev->dev);
5613         pci_set_drvdata(pdev, hw);
5614
5615         priv = hw->priv;
5616         priv->hw = hw;
5617         priv->pdev = pdev;
5618         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5619
5620
5621         priv->sram = pci_iomap(pdev, 0, 0x10000);
5622         if (priv->sram == NULL) {
5623                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5624                 goto err_iounmap;
5625         }
5626
5627         /*
5628          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5629          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5630          */
5631         priv->regs = pci_iomap(pdev, 1, 0x10000);
5632         if (priv->regs == NULL) {
5633                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5634                 if (priv->regs == NULL) {
5635                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5636                         goto err_iounmap;
5637                 }
5638         }
5639
5640         /*
5641          * Choose the initial fw image depending on user input.  If a second
5642          * image is available, make it the alternative image that will be
5643          * loaded if the first one fails.
5644          */
5645         init_completion(&priv->firmware_loading_complete);
5646         di = priv->device_info;
5647         if (ap_mode_default && di->fw_image_ap) {
5648                 priv->fw_pref = di->fw_image_ap;
5649                 priv->fw_alt = di->fw_image_sta;
5650         } else if (!ap_mode_default && di->fw_image_sta) {
5651                 priv->fw_pref = di->fw_image_sta;
5652                 priv->fw_alt = di->fw_image_ap;
5653         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5654                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5655                 priv->fw_pref = di->fw_image_sta;
5656         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5657                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5658                 priv->fw_pref = di->fw_image_ap;
5659         }
5660         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5661         if (rc)
5662                 goto err_stop_firmware;
5663         return rc;
5664
5665 err_stop_firmware:
5666         mwl8k_hw_reset(priv);
5667
5668 err_iounmap:
5669         if (priv->regs != NULL)
5670                 pci_iounmap(pdev, priv->regs);
5671
5672         if (priv->sram != NULL)
5673                 pci_iounmap(pdev, priv->sram);
5674
5675         pci_set_drvdata(pdev, NULL);
5676         ieee80211_free_hw(hw);
5677
5678 err_free_reg:
5679         pci_release_regions(pdev);
5680
5681 err_disable_device:
5682         pci_disable_device(pdev);
5683
5684         return rc;
5685 }
5686
5687 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5688 {
5689         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5690 }
5691
5692 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5693 {
5694         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5695         struct mwl8k_priv *priv;
5696         int i;
5697
5698         if (hw == NULL)
5699                 return;
5700         priv = hw->priv;
5701
5702         wait_for_completion(&priv->firmware_loading_complete);
5703
5704         if (priv->fw_state == FW_STATE_ERROR) {
5705                 mwl8k_hw_reset(priv);
5706                 goto unmap;
5707         }
5708
5709         ieee80211_stop_queues(hw);
5710
5711         ieee80211_unregister_hw(hw);
5712
5713         /* Remove TX reclaim and RX tasklets.  */
5714         tasklet_kill(&priv->poll_tx_task);
5715         tasklet_kill(&priv->poll_rx_task);
5716
5717         /* Stop hardware */
5718         mwl8k_hw_reset(priv);
5719
5720         /* Return all skbs to mac80211 */
5721         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5722                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5723
5724         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5725                 mwl8k_txq_deinit(hw, i);
5726
5727         mwl8k_rxq_deinit(hw, 0);
5728
5729         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5730
5731 unmap:
5732         pci_iounmap(pdev, priv->regs);
5733         pci_iounmap(pdev, priv->sram);
5734         pci_set_drvdata(pdev, NULL);
5735         ieee80211_free_hw(hw);
5736         pci_release_regions(pdev);
5737         pci_disable_device(pdev);
5738 }
5739
5740 static struct pci_driver mwl8k_driver = {
5741         .name           = MWL8K_NAME,
5742         .id_table       = mwl8k_pci_id_table,
5743         .probe          = mwl8k_probe,
5744         .remove         = __devexit_p(mwl8k_remove),
5745         .shutdown       = __devexit_p(mwl8k_shutdown),
5746 };
5747
5748 static int __init mwl8k_init(void)
5749 {
5750         return pci_register_driver(&mwl8k_driver);
5751 }
5752
5753 static void __exit mwl8k_exit(void)
5754 {
5755         pci_unregister_driver(&mwl8k_driver);
5756 }
5757
5758 module_init(mwl8k_init);
5759 module_exit(mwl8k_exit);
5760
5761 MODULE_DESCRIPTION(MWL8K_DESC);
5762 MODULE_VERSION(MWL8K_VERSION);
5763 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5764 MODULE_LICENSE("GPL");