drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.12"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 struct rxd_ops {
 105         int rxd_size;
 106         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
 107         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
 108         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 109                            __le16 *qos, s8 *noise);
 110 };
 111
 112 struct mwl8k_device_info {
 113         char *part_name;
 114         char *helper_image;
 115         char *fw_image_sta;
 116         char *fw_image_ap;
 117         struct rxd_ops *ap_rxd_ops;
 118         u32 fw_api_ap;
 119 };
 120
 121 struct mwl8k_rx_queue {
 122         int rxd_count;
 123
 124         /* hw receives here */
 125         int head;
 126
 127         /* refill descs here */
 128         int tail;
 129
 130         void *rxd;
 131         dma_addr_t rxd_dma;
 132         struct {
 133                 struct sk_buff *skb;
 134                 DEFINE_DMA_UNMAP_ADDR(dma);
 135         } *buf;
 136 };
 137
 138 struct mwl8k_tx_queue {
 139         /* hw transmits here */
 140         int head;
 141
 142         /* sw appends here */
 143         int tail;
 144
 145         unsigned int len;
 146         struct mwl8k_tx_desc *txd;
 147         dma_addr_t txd_dma;
 148         struct sk_buff **skb;
 149 };
 150
 151 enum {
 152         AMPDU_NO_STREAM,
 153         AMPDU_STREAM_NEW,
 154         AMPDU_STREAM_IN_PROGRESS,
 155         AMPDU_STREAM_ACTIVE,
 156 };
 157
 158 struct mwl8k_ampdu_stream {
 159         struct ieee80211_sta *sta;
 160         u8 tid;
 161         u8 state;
 162         u8 idx;
 163         u8 txq_idx; /* index of this stream in priv->txq */
 164 };
 165
 166 struct mwl8k_priv {
 167         struct ieee80211_hw *hw;
 168         struct pci_dev *pdev;
 169         int irq;
 170
 171         struct mwl8k_device_info *device_info;
 172
 173         void __iomem *sram;
 174         void __iomem *regs;
 175
 176         /* firmware */
 177         const struct firmware *fw_helper;
 178         const struct firmware *fw_ucode;
 179
 180         /* hardware/firmware parameters */
 181         bool ap_fw;
 182         struct rxd_ops *rxd_ops;
 183         struct ieee80211_supported_band band_24;
 184         struct ieee80211_channel channels_24[14];
 185         struct ieee80211_rate rates_24[14];
 186         struct ieee80211_supported_band band_50;
 187         struct ieee80211_channel channels_50[4];
 188         struct ieee80211_rate rates_50[9];
 189         u32 ap_macids_supported;
 190         u32 sta_macids_supported;
 191
 192         /* Ampdu stream information */
 193         u8 num_ampdu_queues;
 194         spinlock_t stream_lock;
 195         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 196         struct work_struct watchdog_ba_handle;
 197
 198         /* firmware access */
 199         struct mutex fw_mutex;
 200         struct task_struct *fw_mutex_owner;
 201         int fw_mutex_depth;
 202         struct completion *hostcmd_wait;
 203
 204         /* lock held over TX and TX reap */
 205         spinlock_t tx_lock;
 206
 207         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 208         struct completion *tx_wait;
 209
 210         /* List of interfaces.  */
 211         u32 macids_used;
 212         struct list_head vif_list;
 213
 214         /* power management status cookie from firmware */
 215         u32 *cookie;
 216         dma_addr_t cookie_dma;
 217
 218         u16 num_mcaddrs;
 219         u8 hw_rev;
 220         u32 fw_rev;
 221
 222         /*
 223          * Running count of TX packets in flight, to avoid
 224          * iterating over the transmit rings each time.
 225          */
 226         int pending_tx_pkts;
 227
 228         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 229         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 230         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 231
 232         bool radio_on;
 233         bool radio_short_preamble;
 234         bool sniffer_enabled;
 235         bool wmm_enabled;
 236
 237         /* XXX need to convert this to handle multiple interfaces */
 238         bool capture_beacon;
 239         u8 capture_bssid[ETH_ALEN];
 240         struct sk_buff *beacon_skb;
 241
 242         /*
 243          * This FJ worker has to be global as it is scheduled from the
 244          * RX handler.  At this point we don't know which interface it
 245          * belongs to until the list of bssids waiting to complete join
 246          * is checked.
 247          */
 248         struct work_struct finalize_join_worker;
 249
 250         /* Tasklet to perform TX reclaim.  */
 251         struct tasklet_struct poll_tx_task;
 252
 253         /* Tasklet to perform RX.  */
 254         struct tasklet_struct poll_rx_task;
 255
 256         /* Most recently reported noise in dBm */
 257         s8 noise;
 258
 259         /*
 260          * preserve the queue configurations so they can be restored if/when
 261          * the firmware image is swapped.
 262          */
 263         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 264
 265         /* async firmware loading state */
 266         unsigned fw_state;
 267         char *fw_pref;
 268         char *fw_alt;
 269         struct completion firmware_loading_complete;
 270 };
 271
 272 #define MAX_WEP_KEY_LEN         13
 273 #define NUM_WEP_KEYS            4
 274
 275 /* Per interface specific private data */
 276 struct mwl8k_vif {
 277         struct list_head list;
 278         struct ieee80211_vif *vif;
 279
 280         /* Firmware macid for this vif.  */
 281         int macid;
 282
 283         /* Non AMPDU sequence number assigned by driver.  */
 284         u16 seqno;
 285
 286         /* Saved WEP keys */
 287         struct {
 288                 u8 enabled;
 289                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 290         } wep_key_conf[NUM_WEP_KEYS];
 291
 292         /* BSSID */
 293         u8 bssid[ETH_ALEN];
 294
 295         /* A flag to indicate is HW crypto is enabled for this bssid */
 296         bool is_hw_crypto_enabled;
 297 };
 298 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 299 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 300
 301 struct tx_traffic_info {
 302         u32 start_time;
 303         u32 pkts;
 304 };
 305
 306 #define MWL8K_MAX_TID 8
 307 struct mwl8k_sta {
 308         /* Index into station database. Returned by UPDATE_STADB.  */
 309         u8 peer_id;
 310         u8 is_ampdu_allowed;
 311         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 312 };
 313 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 314
 315 static const struct ieee80211_channel mwl8k_channels_24[] = {
 316         { .center_freq = 2412, .hw_value = 1, },
 317         { .center_freq = 2417, .hw_value = 2, },
 318         { .center_freq = 2422, .hw_value = 3, },
 319         { .center_freq = 2427, .hw_value = 4, },
 320         { .center_freq = 2432, .hw_value = 5, },
 321         { .center_freq = 2437, .hw_value = 6, },
 322         { .center_freq = 2442, .hw_value = 7, },
 323         { .center_freq = 2447, .hw_value = 8, },
 324         { .center_freq = 2452, .hw_value = 9, },
 325         { .center_freq = 2457, .hw_value = 10, },
 326         { .center_freq = 2462, .hw_value = 11, },
 327         { .center_freq = 2467, .hw_value = 12, },
 328         { .center_freq = 2472, .hw_value = 13, },
 329         { .center_freq = 2484, .hw_value = 14, },
 330 };
 331
 332 static const struct ieee80211_rate mwl8k_rates_24[] = {
 333         { .bitrate = 10, .hw_value = 2, },
 334         { .bitrate = 20, .hw_value = 4, },
 335         { .bitrate = 55, .hw_value = 11, },
 336         { .bitrate = 110, .hw_value = 22, },
 337         { .bitrate = 220, .hw_value = 44, },
 338         { .bitrate = 60, .hw_value = 12, },
 339         { .bitrate = 90, .hw_value = 18, },
 340         { .bitrate = 120, .hw_value = 24, },
 341         { .bitrate = 180, .hw_value = 36, },
 342         { .bitrate = 240, .hw_value = 48, },
 343         { .bitrate = 360, .hw_value = 72, },
 344         { .bitrate = 480, .hw_value = 96, },
 345         { .bitrate = 540, .hw_value = 108, },
 346         { .bitrate = 720, .hw_value = 144, },
 347 };
 348
 349 static const struct ieee80211_channel mwl8k_channels_50[] = {
 350         { .center_freq = 5180, .hw_value = 36, },
 351         { .center_freq = 5200, .hw_value = 40, },
 352         { .center_freq = 5220, .hw_value = 44, },
 353         { .center_freq = 5240, .hw_value = 48, },
 354 };
 355
 356 static const struct ieee80211_rate mwl8k_rates_50[] = {
 357         { .bitrate = 60, .hw_value = 12, },
 358         { .bitrate = 90, .hw_value = 18, },
 359         { .bitrate = 120, .hw_value = 24, },
 360         { .bitrate = 180, .hw_value = 36, },
 361         { .bitrate = 240, .hw_value = 48, },
 362         { .bitrate = 360, .hw_value = 72, },
 363         { .bitrate = 480, .hw_value = 96, },
 364         { .bitrate = 540, .hw_value = 108, },
 365         { .bitrate = 720, .hw_value = 144, },
 366 };
 367
 368 /* Set or get info from Firmware */
 369 #define MWL8K_CMD_GET                   0x0000
 370 #define MWL8K_CMD_SET                   0x0001
 371 #define MWL8K_CMD_SET_LIST              0x0002
 372
 373 /* Firmware command codes */
 374 #define MWL8K_CMD_CODE_DNLD             0x0001
 375 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 376 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 377 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 378 #define MWL8K_CMD_GET_STAT              0x0014
 379 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 380 #define MWL8K_CMD_RF_TX_POWER           0x001e
 381 #define MWL8K_CMD_TX_POWER              0x001f
 382 #define MWL8K_CMD_RF_ANTENNA            0x0020
 383 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 384 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 385 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 386 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 387 #define MWL8K_CMD_SET_AID               0x010d
 388 #define MWL8K_CMD_SET_RATE              0x0110
 389 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 390 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 391 #define MWL8K_CMD_SET_SLOT              0x0114
 392 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 393 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 394 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 395 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 396 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 397 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 398 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 399 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 400 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 401 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 402 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 403 #define MWL8K_CMD_UPDATE_STADB          0x1123
 404 #define MWL8K_CMD_BASTREAM              0x1125
 405
 406 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 407 {
 408         u16 command = le16_to_cpu(cmd);
 409
 410 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 411                                         snprintf(buf, bufsize, "%s", #x);\
 412                                         return buf;\
 413                                         } while (0)
 414         switch (command & ~0x8000) {
 415                 MWL8K_CMDNAME(CODE_DNLD);
 416                 MWL8K_CMDNAME(GET_HW_SPEC);
 417                 MWL8K_CMDNAME(SET_HW_SPEC);
 418                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 419                 MWL8K_CMDNAME(GET_STAT);
 420                 MWL8K_CMDNAME(RADIO_CONTROL);
 421                 MWL8K_CMDNAME(RF_TX_POWER);
 422                 MWL8K_CMDNAME(TX_POWER);
 423                 MWL8K_CMDNAME(RF_ANTENNA);
 424                 MWL8K_CMDNAME(SET_BEACON);
 425                 MWL8K_CMDNAME(SET_PRE_SCAN);
 426                 MWL8K_CMDNAME(SET_POST_SCAN);
 427                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 428                 MWL8K_CMDNAME(SET_AID);
 429                 MWL8K_CMDNAME(SET_RATE);
 430                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 431                 MWL8K_CMDNAME(RTS_THRESHOLD);
 432                 MWL8K_CMDNAME(SET_SLOT);
 433                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 434                 MWL8K_CMDNAME(SET_WMM_MODE);
 435                 MWL8K_CMDNAME(MIMO_CONFIG);
 436                 MWL8K_CMDNAME(USE_FIXED_RATE);
 437                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 438                 MWL8K_CMDNAME(SET_MAC_ADDR);
 439                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 440                 MWL8K_CMDNAME(BSS_START);
 441                 MWL8K_CMDNAME(SET_NEW_STN);
 442                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 443                 MWL8K_CMDNAME(UPDATE_STADB);
 444                 MWL8K_CMDNAME(BASTREAM);
 445                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 446         default:
 447                 snprintf(buf, bufsize, "0x%x", cmd);
 448         }
 449 #undef MWL8K_CMDNAME
 450
 451         return buf;
 452 }
 453
 454 /* Hardware and firmware reset */
 455 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 456 {
 457         iowrite32(MWL8K_H2A_INT_RESET,
 458                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 459         iowrite32(MWL8K_H2A_INT_RESET,
 460                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 461         msleep(20);
 462 }
 463
 464 /* Release fw image */
 465 static void mwl8k_release_fw(const struct firmware **fw)
 466 {
 467         if (*fw == NULL)
 468                 return;
 469         release_firmware(*fw);
 470         *fw = NULL;
 471 }
 472
 473 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 474 {
 475         mwl8k_release_fw(&priv->fw_ucode);
 476         mwl8k_release_fw(&priv->fw_helper);
 477 }
 478
 479 /* states for asynchronous f/w loading */
 480 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 481 enum {
 482         FW_STATE_INIT = 0,
 483         FW_STATE_LOADING_PREF,
 484         FW_STATE_LOADING_ALT,
 485         FW_STATE_ERROR,
 486 };
 487
 488 /* Request fw image */
 489 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 490                             const char *fname, const struct firmware **fw,
 491                             bool nowait)
 492 {
 493         /* release current image */
 494         if (*fw != NULL)
 495                 mwl8k_release_fw(fw);
 496
 497         if (nowait)
 498                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 499                                                &priv->pdev->dev, GFP_KERNEL,
 500                                                priv, mwl8k_fw_state_machine);
 501         else
 502                 return request_firmware(fw, fname, &priv->pdev->dev);
 503 }
 504
 505 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 506                                   bool nowait)
 507 {
 508         struct mwl8k_device_info *di = priv->device_info;
 509         int rc;
 510
 511         if (di->helper_image != NULL) {
 512                 if (nowait)
 513                         rc = mwl8k_request_fw(priv, di->helper_image,
 514                                               &priv->fw_helper, true);
 515                 else
 516                         rc = mwl8k_request_fw(priv, di->helper_image,
 517                                               &priv->fw_helper, false);
 518                 if (rc)
 519                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 520                                pci_name(priv->pdev), di->helper_image);
 521
 522                 if (rc || nowait)
 523                         return rc;
 524         }
 525
 526         if (nowait) {
 527                 /*
 528                  * if we get here, no helper image is needed.  Skip the
 529                  * FW_STATE_INIT state.
 530                  */
 531                 priv->fw_state = FW_STATE_LOADING_PREF;
 532                 rc = mwl8k_request_fw(priv, fw_image,
 533                                       &priv->fw_ucode,
 534                                       true);
 535         } else
 536                 rc = mwl8k_request_fw(priv, fw_image,
 537                                       &priv->fw_ucode, false);
 538         if (rc) {
 539                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 540                        pci_name(priv->pdev), fw_image);
 541                 mwl8k_release_fw(&priv->fw_helper);
 542                 return rc;
 543         }
 544
 545         return 0;
 546 }
 547
 548 struct mwl8k_cmd_pkt {
 549         __le16  code;
 550         __le16  length;
 551         __u8    seq_num;
 552         __u8    macid;
 553         __le16  result;
 554         char    payload[0];
 555 } __packed;
 556
 557 /*
 558  * Firmware loading.
 559  */
 560 static int
 561 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 562 {
 563         void __iomem *regs = priv->regs;
 564         dma_addr_t dma_addr;
 565         int loops;
 566
 567         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 568         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 569                 return -ENOMEM;
 570
 571         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 572         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 573         iowrite32(MWL8K_H2A_INT_DOORBELL,
 574                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 575         iowrite32(MWL8K_H2A_INT_DUMMY,
 576                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 577
 578         loops = 1000;
 579         do {
 580                 u32 int_code;
 581
 582                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 583                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 584                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 585                         break;
 586                 }
 587
 588                 cond_resched();
 589                 udelay(1);
 590         } while (--loops);
 591
 592         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 593
 594         return loops ? 0 : -ETIMEDOUT;
 595 }
 596
 597 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 598                                 const u8 *data, size_t length)
 599 {
 600         struct mwl8k_cmd_pkt *cmd;
 601         int done;
 602         int rc = 0;
 603
 604         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 605         if (cmd == NULL)
 606                 return -ENOMEM;
 607
 608         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 609         cmd->seq_num = 0;
 610         cmd->macid = 0;
 611         cmd->result = 0;
 612
 613         done = 0;
 614         while (length) {
 615                 int block_size = length > 256 ? 256 : length;
 616
 617                 memcpy(cmd->payload, data + done, block_size);
 618                 cmd->length = cpu_to_le16(block_size);
 619
 620                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 621                                                 sizeof(*cmd) + block_size);
 622                 if (rc)
 623                         break;
 624
 625                 done += block_size;
 626                 length -= block_size;
 627         }
 628
 629         if (!rc) {
 630                 cmd->length = 0;
 631                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 632         }
 633
 634         kfree(cmd);
 635
 636         return rc;
 637 }
 638
 639 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 640                                 const u8 *data, size_t length)
 641 {
 642         unsigned char *buffer;
 643         int may_continue, rc = 0;
 644         u32 done, prev_block_size;
 645
 646         buffer = kmalloc(1024, GFP_KERNEL);
 647         if (buffer == NULL)
 648                 return -ENOMEM;
 649
 650         done = 0;
 651         prev_block_size = 0;
 652         may_continue = 1000;
 653         while (may_continue > 0) {
 654                 u32 block_size;
 655
 656                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 657                 if (block_size & 1) {
 658                         block_size &= ~1;
 659                         may_continue--;
 660                 } else {
 661                         done += prev_block_size;
 662                         length -= prev_block_size;
 663                 }
 664
 665                 if (block_size > 1024 || block_size > length) {
 666                         rc = -EOVERFLOW;
 667                         break;
 668                 }
 669
 670                 if (length == 0) {
 671                         rc = 0;
 672                         break;
 673                 }
 674
 675                 if (block_size == 0) {
 676                         rc = -EPROTO;
 677                         may_continue--;
 678                         udelay(1);
 679                         continue;
 680                 }
 681
 682                 prev_block_size = block_size;
 683                 memcpy(buffer, data + done, block_size);
 684
 685                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 686                 if (rc)
 687                         break;
 688         }
 689
 690         if (!rc && length != 0)
 691                 rc = -EREMOTEIO;
 692
 693         kfree(buffer);
 694
 695         return rc;
 696 }
 697
 698 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 699 {
 700         struct mwl8k_priv *priv = hw->priv;
 701         const struct firmware *fw = priv->fw_ucode;
 702         int rc;
 703         int loops;
 704
 705         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 706                 const struct firmware *helper = priv->fw_helper;
 707
 708                 if (helper == NULL) {
 709                         printk(KERN_ERR "%s: helper image needed but none "
 710                                "given\n", pci_name(priv->pdev));
 711                         return -EINVAL;
 712                 }
 713
 714                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 715                 if (rc) {
 716                         printk(KERN_ERR "%s: unable to load firmware "
 717                                "helper image\n", pci_name(priv->pdev));
 718                         return rc;
 719                 }
 720                 msleep(20);
 721
 722                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 723         } else {
 724                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 725         }
 726
 727         if (rc) {
 728                 printk(KERN_ERR "%s: unable to load firmware image\n",
 729                        pci_name(priv->pdev));
 730                 return rc;
 731         }
 732
 733         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 734
 735         loops = 500000;
 736         do {
 737                 u32 ready_code;
 738
 739                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 740                 if (ready_code == MWL8K_FWAP_READY) {
 741                         priv->ap_fw = true;
 742                         break;
 743                 } else if (ready_code == MWL8K_FWSTA_READY) {
 744                         priv->ap_fw = false;
 745                         break;
 746                 }
 747
 748                 cond_resched();
 749                 udelay(1);
 750         } while (--loops);
 751
 752         return loops ? 0 : -ETIMEDOUT;
 753 }
 754
 755
 756 /* DMA header used by firmware and hardware.  */
 757 struct mwl8k_dma_data {
 758         __le16 fwlen;
 759         struct ieee80211_hdr wh;
 760         char data[0];
 761 } __packed;
 762
 763 /* Routines to add/remove DMA header from skb.  */
 764 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 765 {
 766         struct mwl8k_dma_data *tr;
 767         int hdrlen;
 768
 769         tr = (struct mwl8k_dma_data *)skb->data;
 770         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 771
 772         if (hdrlen != sizeof(tr->wh)) {
 773                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 774                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 775                         *((__le16 *)(tr->data - 2)) = qos;
 776                 } else {
 777                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 778                 }
 779         }
 780
 781         if (hdrlen != sizeof(*tr))
 782                 skb_pull(skb, sizeof(*tr) - hdrlen);
 783 }
 784
 785 #define REDUCED_TX_HEADROOM     8
 786
 787 static void
 788 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 789                                                 int head_pad, int tail_pad)
 790 {
 791         struct ieee80211_hdr *wh;
 792         int hdrlen;
 793         int reqd_hdrlen;
 794         struct mwl8k_dma_data *tr;
 795
 796         /*
 797          * Add a firmware DMA header; the firmware requires that we
 798          * present a 2-byte payload length followed by a 4-address
 799          * header (without QoS field), followed (optionally) by any
 800          * WEP/ExtIV header (but only filled in for CCMP).
 801          */
 802         wh = (struct ieee80211_hdr *)skb->data;
 803
 804         hdrlen = ieee80211_hdrlen(wh->frame_control);
 805
 806         /*
 807          * Check if skb_resize is required because of
 808          * tx_headroom adjustment.
 809          */
 810         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 811                                                 + REDUCED_TX_HEADROOM))) {
 812                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 813
 814                         wiphy_err(priv->hw->wiphy,
 815                                         "Failed to reallocate TX buffer\n");
 816                         return;
 817                 }
 818                 skb->truesize += REDUCED_TX_HEADROOM;
 819         }
 820
 821         reqd_hdrlen = sizeof(*tr) + head_pad;
 822
 823         if (hdrlen != reqd_hdrlen)
 824                 skb_push(skb, reqd_hdrlen - hdrlen);
 825
 826         if (ieee80211_is_data_qos(wh->frame_control))
 827                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 828
 829         tr = (struct mwl8k_dma_data *)skb->data;
 830         if (wh != &tr->wh)
 831                 memmove(&tr->wh, wh, hdrlen);
 832         if (hdrlen != sizeof(tr->wh))
 833                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 834
 835         /*
 836          * Firmware length is the length of the fully formed "802.11
 837          * payload".  That is, everything except for the 802.11 header.
 838          * This includes all crypto material including the MIC.
 839          */
 840         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 841 }
 842
 843 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 844                 struct sk_buff *skb)
 845 {
 846         struct ieee80211_hdr *wh;
 847         struct ieee80211_tx_info *tx_info;
 848         struct ieee80211_key_conf *key_conf;
 849         int data_pad;
 850         int head_pad = 0;
 851
 852         wh = (struct ieee80211_hdr *)skb->data;
 853
 854         tx_info = IEEE80211_SKB_CB(skb);
 855
 856         key_conf = NULL;
 857         if (ieee80211_is_data(wh->frame_control))
 858                 key_conf = tx_info->control.hw_key;
 859
 860         /*
 861          * Make sure the packet header is in the DMA header format (4-address
 862          * without QoS), and add head & tail padding when HW crypto is enabled.
 863          *
 864          * We have the following trailer padding requirements:
 865          * - WEP: 4 trailer bytes (ICV)
 866          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 867          * - CCMP: 8 trailer bytes (MIC)
 868          */
 869         data_pad = 0;
 870         if (key_conf != NULL) {
 871                 head_pad = key_conf->iv_len;
 872                 switch (key_conf->cipher) {
 873                 case WLAN_CIPHER_SUITE_WEP40:
 874                 case WLAN_CIPHER_SUITE_WEP104:
 875                         data_pad = 4;
 876                         break;
 877                 case WLAN_CIPHER_SUITE_TKIP:
 878                         data_pad = 12;
 879                         break;
 880                 case WLAN_CIPHER_SUITE_CCMP:
 881                         data_pad = 8;
 882                         break;
 883                 }
 884         }
 885         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 886 }
 887
 888 /*
 889  * Packet reception for 88w8366 AP firmware.
 890  */
 891 struct mwl8k_rxd_8366_ap {
 892         __le16 pkt_len;
 893         __u8 sq2;
 894         __u8 rate;
 895         __le32 pkt_phys_addr;
 896         __le32 next_rxd_phys_addr;
 897         __le16 qos_control;
 898         __le16 htsig2;
 899         __le32 hw_rssi_info;
 900         __le32 hw_noise_floor_info;
 901         __u8 noise_floor;
 902         __u8 pad0[3];
 903         __u8 rssi;
 904         __u8 rx_status;
 905         __u8 channel;
 906         __u8 rx_ctrl;
 907 } __packed;
 908
 909 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 910 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 911 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 912
 913 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 914
 915 /* 8366 AP rx_status bits */
 916 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 917 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 918 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 919 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 920 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 921
 922 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 923 {
 924         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 925
 926         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 927         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 928 }
 929
 930 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 931 {
 932         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 933
 934         rxd->pkt_len = cpu_to_le16(len);
 935         rxd->pkt_phys_addr = cpu_to_le32(addr);
 936         wmb();
 937         rxd->rx_ctrl = 0;
 938 }
 939
 940 static int
 941 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 942                           __le16 *qos, s8 *noise)
 943 {
 944         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 945
 946         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 947                 return -1;
 948         rmb();
 949
 950         memset(status, 0, sizeof(*status));
 951
 952         status->signal = -rxd->rssi;
 953         *noise = -rxd->noise_floor;
 954
 955         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 956                 status->flag |= RX_FLAG_HT;
 957                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 958                         status->flag |= RX_FLAG_40MHZ;
 959                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 960         } else {
 961                 int i;
 962
 963                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 964                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 965                                 status->rate_idx = i;
 966                                 break;
 967                         }
 968                 }
 969         }
 970
 971         if (rxd->channel > 14) {
 972                 status->band = IEEE80211_BAND_5GHZ;
 973                 if (!(status->flag & RX_FLAG_HT))
 974                         status->rate_idx -= 5;
 975         } else {
 976                 status->band = IEEE80211_BAND_2GHZ;
 977         }
 978         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 979                                                       status->band);
 980
 981         *qos = rxd->qos_control;
 982
 983         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 984             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 985             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 986                 status->flag |= RX_FLAG_MMIC_ERROR;
 987
 988         return le16_to_cpu(rxd->pkt_len);
 989 }
 990
 991 static struct rxd_ops rxd_8366_ap_ops = {
 992         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 993         .rxd_init       = mwl8k_rxd_8366_ap_init,
 994         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 995         .rxd_process    = mwl8k_rxd_8366_ap_process,
 996 };
 997
 998 /*
 999  * Packet reception for STA firmware.
1000  */
1001 struct mwl8k_rxd_sta {
1002         __le16 pkt_len;
1003         __u8 link_quality;
1004         __u8 noise_level;
1005         __le32 pkt_phys_addr;
1006         __le32 next_rxd_phys_addr;
1007         __le16 qos_control;
1008         __le16 rate_info;
1009         __le32 pad0[4];
1010         __u8 rssi;
1011         __u8 channel;
1012         __le16 pad1;
1013         __u8 rx_ctrl;
1014         __u8 rx_status;
1015         __u8 pad2[2];
1016 } __packed;
1017
1018 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1019 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1020 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1021 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1022 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1023 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1024
1025 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1026 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1027 /* ICV=0 or MIC=1 */
1028 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1029 /* Key is uploaded only in failure case */
1030 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1031
1032 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1033 {
1034         struct mwl8k_rxd_sta *rxd = _rxd;
1035
1036         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1037         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1038 }
1039
1040 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1041 {
1042         struct mwl8k_rxd_sta *rxd = _rxd;
1043
1044         rxd->pkt_len = cpu_to_le16(len);
1045         rxd->pkt_phys_addr = cpu_to_le32(addr);
1046         wmb();
1047         rxd->rx_ctrl = 0;
1048 }
1049
1050 static int
1051 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1052                        __le16 *qos, s8 *noise)
1053 {
1054         struct mwl8k_rxd_sta *rxd = _rxd;
1055         u16 rate_info;
1056
1057         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1058                 return -1;
1059         rmb();
1060
1061         rate_info = le16_to_cpu(rxd->rate_info);
1062
1063         memset(status, 0, sizeof(*status));
1064
1065         status->signal = -rxd->rssi;
1066         *noise = -rxd->noise_level;
1067         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1068         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1069
1070         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1071                 status->flag |= RX_FLAG_SHORTPRE;
1072         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1073                 status->flag |= RX_FLAG_40MHZ;
1074         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1075                 status->flag |= RX_FLAG_SHORT_GI;
1076         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1077                 status->flag |= RX_FLAG_HT;
1078
1079         if (rxd->channel > 14) {
1080                 status->band = IEEE80211_BAND_5GHZ;
1081                 if (!(status->flag & RX_FLAG_HT))
1082                         status->rate_idx -= 5;
1083         } else {
1084                 status->band = IEEE80211_BAND_2GHZ;
1085         }
1086         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1087                                                       status->band);
1088
1089         *qos = rxd->qos_control;
1090         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1091             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1092                 status->flag |= RX_FLAG_MMIC_ERROR;
1093
1094         return le16_to_cpu(rxd->pkt_len);
1095 }
1096
1097 static struct rxd_ops rxd_sta_ops = {
1098         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1099         .rxd_init       = mwl8k_rxd_sta_init,
1100         .rxd_refill     = mwl8k_rxd_sta_refill,
1101         .rxd_process    = mwl8k_rxd_sta_process,
1102 };
1103
1104
1105 #define MWL8K_RX_DESCS          256
1106 #define MWL8K_RX_MAXSZ          3800
1107
1108 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1109 {
1110         struct mwl8k_priv *priv = hw->priv;
1111         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1112         int size;
1113         int i;
1114
1115         rxq->rxd_count = 0;
1116         rxq->head = 0;
1117         rxq->tail = 0;
1118
1119         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1120
1121         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1122         if (rxq->rxd == NULL) {
1123                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1124                 return -ENOMEM;
1125         }
1126         memset(rxq->rxd, 0, size);
1127
1128         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1129         if (rxq->buf == NULL) {
1130                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1131                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1132                 return -ENOMEM;
1133         }
1134
1135         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1136                 int desc_size;
1137                 void *rxd;
1138                 int nexti;
1139                 dma_addr_t next_dma_addr;
1140
1141                 desc_size = priv->rxd_ops->rxd_size;
1142                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1143
1144                 nexti = i + 1;
1145                 if (nexti == MWL8K_RX_DESCS)
1146                         nexti = 0;
1147                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1148
1149                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1150         }
1151
1152         return 0;
1153 }
1154
1155 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1156 {
1157         struct mwl8k_priv *priv = hw->priv;
1158         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1159         int refilled;
1160
1161         refilled = 0;
1162         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1163                 struct sk_buff *skb;
1164                 dma_addr_t addr;
1165                 int rx;
1166                 void *rxd;
1167
1168                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1169                 if (skb == NULL)
1170                         break;
1171
1172                 addr = pci_map_single(priv->pdev, skb->data,
1173                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1174
1175                 rxq->rxd_count++;
1176                 rx = rxq->tail++;
1177                 if (rxq->tail == MWL8K_RX_DESCS)
1178                         rxq->tail = 0;
1179                 rxq->buf[rx].skb = skb;
1180                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1181
1182                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1183                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1184
1185                 refilled++;
1186         }
1187
1188         return refilled;
1189 }
1190
1191 /* Must be called only when the card's reception is completely halted */
1192 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1193 {
1194         struct mwl8k_priv *priv = hw->priv;
1195         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1196         int i;
1197
1198         if (rxq->rxd == NULL)
1199                 return;
1200
1201         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1202                 if (rxq->buf[i].skb != NULL) {
1203                         pci_unmap_single(priv->pdev,
1204                                          dma_unmap_addr(&rxq->buf[i], dma),
1205                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1206                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1207
1208                         kfree_skb(rxq->buf[i].skb);
1209                         rxq->buf[i].skb = NULL;
1210                 }
1211         }
1212
1213         kfree(rxq->buf);
1214         rxq->buf = NULL;
1215
1216         pci_free_consistent(priv->pdev,
1217                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1218                             rxq->rxd, rxq->rxd_dma);
1219         rxq->rxd = NULL;
1220 }
1221
1222
1223 /*
1224  * Scan a list of BSSIDs to process for finalize join.
1225  * Allows for extension to process multiple BSSIDs.
1226  */
1227 static inline int
1228 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1229 {
1230         return priv->capture_beacon &&
1231                 ieee80211_is_beacon(wh->frame_control) &&
1232                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1233 }
1234
1235 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1236                                      struct sk_buff *skb)
1237 {
1238         struct mwl8k_priv *priv = hw->priv;
1239
1240         priv->capture_beacon = false;
1241         memset(priv->capture_bssid, 0, ETH_ALEN);
1242
1243         /*
1244          * Use GFP_ATOMIC as rxq_process is called from
1245          * the primary interrupt handler, memory allocation call
1246          * must not sleep.
1247          */
1248         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1249         if (priv->beacon_skb != NULL)
1250                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1251 }
1252
1253 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1254                                                    u8 *bssid)
1255 {
1256         struct mwl8k_vif *mwl8k_vif;
1257
1258         list_for_each_entry(mwl8k_vif,
1259                             vif_list, list) {
1260                 if (memcmp(bssid, mwl8k_vif->bssid,
1261                            ETH_ALEN) == 0)
1262                         return mwl8k_vif;
1263         }
1264
1265         return NULL;
1266 }
1267
1268 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1269 {
1270         struct mwl8k_priv *priv = hw->priv;
1271         struct mwl8k_vif *mwl8k_vif = NULL;
1272         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1273         int processed;
1274
1275         processed = 0;
1276         while (rxq->rxd_count && limit--) {
1277                 struct sk_buff *skb;
1278                 void *rxd;
1279                 int pkt_len;
1280                 struct ieee80211_rx_status status;
1281                 struct ieee80211_hdr *wh;
1282                 __le16 qos;
1283
1284                 skb = rxq->buf[rxq->head].skb;
1285                 if (skb == NULL)
1286                         break;
1287
1288                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1289
1290                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1291                                                         &priv->noise);
1292                 if (pkt_len < 0)
1293                         break;
1294
1295                 rxq->buf[rxq->head].skb = NULL;
1296
1297                 pci_unmap_single(priv->pdev,
1298                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1299                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1300                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1301
1302                 rxq->head++;
1303                 if (rxq->head == MWL8K_RX_DESCS)
1304                         rxq->head = 0;
1305
1306                 rxq->rxd_count--;
1307
1308                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1309
1310                 /*
1311                  * Check for a pending join operation.  Save a
1312                  * copy of the beacon and schedule a tasklet to
1313                  * send a FINALIZE_JOIN command to the firmware.
1314                  */
1315                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1316                         mwl8k_save_beacon(hw, skb);
1317
1318                 if (ieee80211_has_protected(wh->frame_control)) {
1319
1320                         /* Check if hw crypto has been enabled for
1321                          * this bss. If yes, set the status flags
1322                          * accordingly
1323                          */
1324                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1325                                                                 wh->addr1);
1326
1327                         if (mwl8k_vif != NULL &&
1328                             mwl8k_vif->is_hw_crypto_enabled == true) {
1329                                 /*
1330                                  * When MMIC ERROR is encountered
1331                                  * by the firmware, payload is
1332                                  * dropped and only 32 bytes of
1333                                  * mwl8k Firmware header is sent
1334                                  * to the host.
1335                                  *
1336                                  * We need to add four bytes of
1337                                  * key information.  In it
1338                                  * MAC80211 expects keyidx set to
1339                                  * 0 for triggering Counter
1340                                  * Measure of MMIC failure.
1341                                  */
1342                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1343                                         struct mwl8k_dma_data *tr;
1344                                         tr = (struct mwl8k_dma_data *)skb->data;
1345                                         memset((void *)&(tr->data), 0, 4);
1346                                         pkt_len += 4;
1347                                 }
1348
1349                                 if (!ieee80211_is_auth(wh->frame_control))
1350                                         status.flag |= RX_FLAG_IV_STRIPPED |
1351                                                        RX_FLAG_DECRYPTED |
1352                                                        RX_FLAG_MMIC_STRIPPED;
1353                         }
1354                 }
1355
1356                 skb_put(skb, pkt_len);
1357                 mwl8k_remove_dma_header(skb, qos);
1358                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1359                 ieee80211_rx_irqsafe(hw, skb);
1360
1361                 processed++;
1362         }
1363
1364         return processed;
1365 }
1366
1367
1368 /*
1369  * Packet transmission.
1370  */
1371
1372 #define MWL8K_TXD_STATUS_OK                     0x00000001
1373 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1374 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1375 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1376 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1377
1378 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1379 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1380 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1381 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1382 #define MWL8K_QOS_EOSP                          0x0010
1383
1384 struct mwl8k_tx_desc {
1385         __le32 status;
1386         __u8 data_rate;
1387         __u8 tx_priority;
1388         __le16 qos_control;
1389         __le32 pkt_phys_addr;
1390         __le16 pkt_len;
1391         __u8 dest_MAC_addr[ETH_ALEN];
1392         __le32 next_txd_phys_addr;
1393         __le32 timestamp;
1394         __le16 rate_info;
1395         __u8 peer_id;
1396         __u8 tx_frag_cnt;
1397 } __packed;
1398
1399 #define MWL8K_TX_DESCS          128
1400
1401 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1402 {
1403         struct mwl8k_priv *priv = hw->priv;
1404         struct mwl8k_tx_queue *txq = priv->txq + index;
1405         int size;
1406         int i;
1407
1408         txq->len = 0;
1409         txq->head = 0;
1410         txq->tail = 0;
1411
1412         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1413
1414         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1415         if (txq->txd == NULL) {
1416                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1417                 return -ENOMEM;
1418         }
1419         memset(txq->txd, 0, size);
1420
1421         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1422         if (txq->skb == NULL) {
1423                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1424                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1425                 return -ENOMEM;
1426         }
1427
1428         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1429                 struct mwl8k_tx_desc *tx_desc;
1430                 int nexti;
1431
1432                 tx_desc = txq->txd + i;
1433                 nexti = (i + 1) % MWL8K_TX_DESCS;
1434
1435                 tx_desc->status = 0;
1436                 tx_desc->next_txd_phys_addr =
1437                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1438         }
1439
1440         return 0;
1441 }
1442
1443 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1444 {
1445         iowrite32(MWL8K_H2A_INT_PPA_READY,
1446                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1447         iowrite32(MWL8K_H2A_INT_DUMMY,
1448                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1449         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1450 }
1451
1452 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1453 {
1454         struct mwl8k_priv *priv = hw->priv;
1455         int i;
1456
1457         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1458                 struct mwl8k_tx_queue *txq = priv->txq + i;
1459                 int fw_owned = 0;
1460                 int drv_owned = 0;
1461                 int unused = 0;
1462                 int desc;
1463
1464                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1465                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1466                         u32 status;
1467
1468                         status = le32_to_cpu(tx_desc->status);
1469                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1470                                 fw_owned++;
1471                         else
1472                                 drv_owned++;
1473
1474                         if (tx_desc->pkt_len == 0)
1475                                 unused++;
1476                 }
1477
1478                 wiphy_err(hw->wiphy,
1479                           "txq[%d] len=%d head=%d tail=%d "
1480                           "fw_owned=%d drv_owned=%d unused=%d\n",
1481                           i,
1482                           txq->len, txq->head, txq->tail,
1483                           fw_owned, drv_owned, unused);
1484         }
1485 }
1486
1487 /*
1488  * Must be called with priv->fw_mutex held and tx queues stopped.
1489  */
1490 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1491
1492 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1493 {
1494         struct mwl8k_priv *priv = hw->priv;
1495         DECLARE_COMPLETION_ONSTACK(tx_wait);
1496         int retry;
1497         int rc;
1498
1499         might_sleep();
1500
1501         /*
1502          * The TX queues are stopped at this point, so this test
1503          * doesn't need to take ->tx_lock.
1504          */
1505         if (!priv->pending_tx_pkts)
1506                 return 0;
1507
1508         retry = 0;
1509         rc = 0;
1510
1511         spin_lock_bh(&priv->tx_lock);
1512         priv->tx_wait = &tx_wait;
1513         while (!rc) {
1514                 int oldcount;
1515                 unsigned long timeout;
1516
1517                 oldcount = priv->pending_tx_pkts;
1518
1519                 spin_unlock_bh(&priv->tx_lock);
1520                 timeout = wait_for_completion_timeout(&tx_wait,
1521                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1522                 spin_lock_bh(&priv->tx_lock);
1523
1524                 if (timeout) {
1525                         WARN_ON(priv->pending_tx_pkts);
1526                         if (retry)
1527                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1528                         break;
1529                 }
1530
1531                 if (priv->pending_tx_pkts < oldcount) {
1532                         wiphy_notice(hw->wiphy,
1533                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1534                                      oldcount, priv->pending_tx_pkts);
1535                         retry = 1;
1536                         continue;
1537                 }
1538
1539                 priv->tx_wait = NULL;
1540
1541                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1542                           MWL8K_TX_WAIT_TIMEOUT_MS);
1543                 mwl8k_dump_tx_rings(hw);
1544
1545                 rc = -ETIMEDOUT;
1546         }
1547         spin_unlock_bh(&priv->tx_lock);
1548
1549         return rc;
1550 }
1551
1552 #define MWL8K_TXD_SUCCESS(status)                               \
1553         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1554                      MWL8K_TXD_STATUS_OK_RETRY |                \
1555                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1556
1557 static int mwl8k_tid_queue_mapping(u8 tid)
1558 {
1559         BUG_ON(tid > 7);
1560
1561         switch (tid) {
1562         case 0:
1563         case 3:
1564                 return IEEE80211_AC_BE;
1565                 break;
1566         case 1:
1567         case 2:
1568                 return IEEE80211_AC_BK;
1569                 break;
1570         case 4:
1571         case 5:
1572                 return IEEE80211_AC_VI;
1573                 break;
1574         case 6:
1575         case 7:
1576                 return IEEE80211_AC_VO;
1577                 break;
1578         default:
1579                 return -1;
1580                 break;
1581         }
1582 }
1583
1584 /* The firmware will fill in the rate information
1585  * for each packet that gets queued in the hardware
1586  * and these macros will interpret that info.
1587  */
1588
1589 #define RI_FORMAT(a)              (a & 0x0001)
1590 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1591
1592 static int
1593 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1594 {
1595         struct mwl8k_priv *priv = hw->priv;
1596         struct mwl8k_tx_queue *txq = priv->txq + index;
1597         int processed;
1598
1599         processed = 0;
1600         while (txq->len > 0 && limit--) {
1601                 int tx;
1602                 struct mwl8k_tx_desc *tx_desc;
1603                 unsigned long addr;
1604                 int size;
1605                 struct sk_buff *skb;
1606                 struct ieee80211_tx_info *info;
1607                 u32 status;
1608                 struct ieee80211_sta *sta;
1609                 struct mwl8k_sta *sta_info = NULL;
1610                 u16 rate_info;
1611                 struct ieee80211_hdr *wh;
1612
1613                 tx = txq->head;
1614                 tx_desc = txq->txd + tx;
1615
1616                 status = le32_to_cpu(tx_desc->status);
1617
1618                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1619                         if (!force)
1620                                 break;
1621                         tx_desc->status &=
1622                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1623                 }
1624
1625                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1626                 BUG_ON(txq->len == 0);
1627                 txq->len--;
1628                 priv->pending_tx_pkts--;
1629
1630                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1631                 size = le16_to_cpu(tx_desc->pkt_len);
1632                 skb = txq->skb[tx];
1633                 txq->skb[tx] = NULL;
1634
1635                 BUG_ON(skb == NULL);
1636                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1637
1638                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1639
1640                 wh = (struct ieee80211_hdr *) skb->data;
1641
1642                 /* Mark descriptor as unused */
1643                 tx_desc->pkt_phys_addr = 0;
1644                 tx_desc->pkt_len = 0;
1645
1646                 info = IEEE80211_SKB_CB(skb);
1647                 if (ieee80211_is_data(wh->frame_control)) {
1648                         sta = info->control.sta;
1649                         if (sta) {
1650                                 sta_info = MWL8K_STA(sta);
1651                                 BUG_ON(sta_info == NULL);
1652                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1653                                 /* If rate is < 6.5 Mpbs for an ht station
1654                                  * do not form an ampdu. If the station is a
1655                                  * legacy station (format = 0), do not form an
1656                                  * ampdu
1657                                  */
1658                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1659                                     RI_FORMAT(rate_info) == 0) {
1660                                         sta_info->is_ampdu_allowed = false;
1661                                 } else {
1662                                         sta_info->is_ampdu_allowed = true;
1663                                 }
1664                         }
1665                 }
1666
1667                 ieee80211_tx_info_clear_status(info);
1668
1669                 /* Rate control is happening in the firmware.
1670                  * Ensure no tx rate is being reported.
1671                  */
1672                 info->status.rates[0].idx = -1;
1673                 info->status.rates[0].count = 1;
1674
1675                 if (MWL8K_TXD_SUCCESS(status))
1676                         info->flags |= IEEE80211_TX_STAT_ACK;
1677
1678                 ieee80211_tx_status_irqsafe(hw, skb);
1679
1680                 processed++;
1681         }
1682
1683         return processed;
1684 }
1685
1686 /* must be called only when the card's transmit is completely halted */
1687 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1688 {
1689         struct mwl8k_priv *priv = hw->priv;
1690         struct mwl8k_tx_queue *txq = priv->txq + index;
1691
1692         if (txq->txd == NULL)
1693                 return;
1694
1695         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1696
1697         kfree(txq->skb);
1698         txq->skb = NULL;
1699
1700         pci_free_consistent(priv->pdev,
1701                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1702                             txq->txd, txq->txd_dma);
1703         txq->txd = NULL;
1704 }
1705
1706 /* caller must hold priv->stream_lock when calling the stream functions */
1707 static struct mwl8k_ampdu_stream *
1708 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1709 {
1710         struct mwl8k_ampdu_stream *stream;
1711         struct mwl8k_priv *priv = hw->priv;
1712         int i;
1713
1714         for (i = 0; i < priv->num_ampdu_queues; i++) {
1715                 stream = &priv->ampdu[i];
1716                 if (stream->state == AMPDU_NO_STREAM) {
1717                         stream->sta = sta;
1718                         stream->state = AMPDU_STREAM_NEW;
1719                         stream->tid = tid;
1720                         stream->idx = i;
1721                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1722                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1723                                     sta->addr, tid);
1724                         return stream;
1725                 }
1726         }
1727         return NULL;
1728 }
1729
1730 static int
1731 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1732 {
1733         int ret;
1734
1735         /* if the stream has already been started, don't start it again */
1736         if (stream->state != AMPDU_STREAM_NEW)
1737                 return 0;
1738         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1739         if (ret)
1740                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1741                             "%d\n", stream->sta->addr, stream->tid, ret);
1742         else
1743                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1744                             stream->sta->addr, stream->tid);
1745         return ret;
1746 }
1747
1748 static void
1749 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1750 {
1751         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1752                     stream->tid);
1753         memset(stream, 0, sizeof(*stream));
1754 }
1755
1756 static struct mwl8k_ampdu_stream *
1757 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1758 {
1759         struct mwl8k_priv *priv = hw->priv;
1760         int i;
1761
1762         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1763                 struct mwl8k_ampdu_stream *stream;
1764                 stream = &priv->ampdu[i];
1765                 if (stream->state == AMPDU_NO_STREAM)
1766                         continue;
1767                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1768                     stream->tid == tid)
1769                         return stream;
1770         }
1771         return NULL;
1772 }
1773
1774 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1775 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1776 {
1777         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1778         struct tx_traffic_info *tx_stats;
1779
1780         BUG_ON(tid >= MWL8K_MAX_TID);
1781         tx_stats = &sta_info->tx_stats[tid];
1782
1783         return sta_info->is_ampdu_allowed &&
1784                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1785 }
1786
1787 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1788 {
1789         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1790         struct tx_traffic_info *tx_stats;
1791
1792         BUG_ON(tid >= MWL8K_MAX_TID);
1793         tx_stats = &sta_info->tx_stats[tid];
1794
1795         if (tx_stats->start_time == 0)
1796                 tx_stats->start_time = jiffies;
1797
1798         /* reset the packet count after each second elapses.  If the number of
1799          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1800          * an ampdu stream to be started.
1801          */
1802         if (jiffies - tx_stats->start_time > HZ) {
1803                 tx_stats->pkts = 0;
1804                 tx_stats->start_time = 0;
1805         } else
1806                 tx_stats->pkts++;
1807 }
1808
1809 static void
1810 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1811 {
1812         struct mwl8k_priv *priv = hw->priv;
1813         struct ieee80211_tx_info *tx_info;
1814         struct mwl8k_vif *mwl8k_vif;
1815         struct ieee80211_sta *sta;
1816         struct ieee80211_hdr *wh;
1817         struct mwl8k_tx_queue *txq;
1818         struct mwl8k_tx_desc *tx;
1819         dma_addr_t dma;
1820         u32 txstatus;
1821         u8 txdatarate;
1822         u16 qos;
1823         int txpriority;
1824         u8 tid = 0;
1825         struct mwl8k_ampdu_stream *stream = NULL;
1826         bool start_ba_session = false;
1827         bool mgmtframe = false;
1828         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1829
1830         wh = (struct ieee80211_hdr *)skb->data;
1831         if (ieee80211_is_data_qos(wh->frame_control))
1832                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1833         else
1834                 qos = 0;
1835
1836         if (ieee80211_is_mgmt(wh->frame_control))
1837                 mgmtframe = true;
1838
1839         if (priv->ap_fw)
1840                 mwl8k_encapsulate_tx_frame(priv, skb);
1841         else
1842                 mwl8k_add_dma_header(priv, skb, 0, 0);
1843
1844         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1845
1846         tx_info = IEEE80211_SKB_CB(skb);
1847         sta = tx_info->control.sta;
1848         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1849
1850         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1851                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1852                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1853                 mwl8k_vif->seqno += 0x10;
1854         }
1855
1856         /* Setup firmware control bit fields for each frame type.  */
1857         txstatus = 0;
1858         txdatarate = 0;
1859         if (ieee80211_is_mgmt(wh->frame_control) ||
1860             ieee80211_is_ctl(wh->frame_control)) {
1861                 txdatarate = 0;
1862                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1863         } else if (ieee80211_is_data(wh->frame_control)) {
1864                 txdatarate = 1;
1865                 if (is_multicast_ether_addr(wh->addr1))
1866                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1867
1868                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1869                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1870                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1871                 else
1872                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1873         }
1874
1875         /* Queue ADDBA request in the respective data queue.  While setting up
1876          * the ampdu stream, mac80211 queues further packets for that
1877          * particular ra/tid pair.  However, packets piled up in the hardware
1878          * for that ra/tid pair will still go out. ADDBA request and the
1879          * related data packets going out from different queues asynchronously
1880          * will cause a shift in the receiver window which might result in
1881          * ampdu packets getting dropped at the receiver after the stream has
1882          * been setup.
1883          */
1884         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1885             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1886             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1887             priv->ap_fw)) {
1888                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1889                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1890                 index = mwl8k_tid_queue_mapping(tid);
1891         }
1892
1893         txpriority = index;
1894
1895         if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1896                         && skb->protocol != cpu_to_be16(ETH_P_PAE)
1897                         && ieee80211_is_data_qos(wh->frame_control)) {
1898                 tid = qos & 0xf;
1899                 mwl8k_tx_count_packet(sta, tid);
1900                 spin_lock(&priv->stream_lock);
1901                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1902                 if (stream != NULL) {
1903                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1904                                 txpriority = stream->txq_idx;
1905                                 index = stream->txq_idx;
1906                         } else if (stream->state == AMPDU_STREAM_NEW) {
1907                                 /* We get here if the driver sends us packets
1908                                  * after we've initiated a stream, but before
1909                                  * our ampdu_action routine has been called
1910                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1911                                  * for the ADDBA request.  So this packet can
1912                                  * go out with no risk of sequence number
1913                                  * mismatch.  No special handling is required.
1914                                  */
1915                         } else {
1916                                 /* Drop packets that would go out after the
1917                                  * ADDBA request was sent but before the ADDBA
1918                                  * response is received.  If we don't do this,
1919                                  * the recipient would probably receive it
1920                                  * after the ADDBA request with SSN 0.  This
1921                                  * will cause the recipient's BA receive window
1922                                  * to shift, which would cause the subsequent
1923                                  * packets in the BA stream to be discarded.
1924                                  * mac80211 queues our packets for us in this
1925                                  * case, so this is really just a safety check.
1926                                  */
1927                                 wiphy_warn(hw->wiphy,
1928                                            "Cannot send packet while ADDBA "
1929                                            "dialog is underway.\n");
1930                                 spin_unlock(&priv->stream_lock);
1931                                 dev_kfree_skb(skb);
1932                                 return;
1933                         }
1934                 } else {
1935                         /* Defer calling mwl8k_start_stream so that the current
1936                          * skb can go out before the ADDBA request.  This
1937                          * prevents sequence number mismatch at the recepient
1938                          * as described above.
1939                          */
1940                         if (mwl8k_ampdu_allowed(sta, tid)) {
1941                                 stream = mwl8k_add_stream(hw, sta, tid);
1942                                 if (stream != NULL)
1943                                         start_ba_session = true;
1944                         }
1945                 }
1946                 spin_unlock(&priv->stream_lock);
1947         }
1948
1949         dma = pci_map_single(priv->pdev, skb->data,
1950                                 skb->len, PCI_DMA_TODEVICE);
1951
1952         if (pci_dma_mapping_error(priv->pdev, dma)) {
1953                 wiphy_debug(hw->wiphy,
1954                             "failed to dma map skb, dropping TX frame.\n");
1955                 if (start_ba_session) {
1956                         spin_lock(&priv->stream_lock);
1957                         mwl8k_remove_stream(hw, stream);
1958                         spin_unlock(&priv->stream_lock);
1959                 }
1960                 dev_kfree_skb(skb);
1961                 return;
1962         }
1963
1964         spin_lock_bh(&priv->tx_lock);
1965
1966         txq = priv->txq + index;
1967
1968         /* Mgmt frames that go out frequently are probe
1969          * responses. Other mgmt frames got out relatively
1970          * infrequently. Hence reserve 2 buffers so that
1971          * other mgmt frames do not get dropped due to an
1972          * already queued probe response in one of the
1973          * reserved buffers.
1974          */
1975
1976         if (txq->len >= MWL8K_TX_DESCS - 2) {
1977                 if (mgmtframe == false ||
1978                         txq->len == MWL8K_TX_DESCS) {
1979                         if (start_ba_session) {
1980                                 spin_lock(&priv->stream_lock);
1981                                 mwl8k_remove_stream(hw, stream);
1982                                 spin_unlock(&priv->stream_lock);
1983                         }
1984                         spin_unlock_bh(&priv->tx_lock);
1985                         dev_kfree_skb(skb);
1986                         return;
1987                 }
1988         }
1989
1990         BUG_ON(txq->skb[txq->tail] != NULL);
1991         txq->skb[txq->tail] = skb;
1992
1993         tx = txq->txd + txq->tail;
1994         tx->data_rate = txdatarate;
1995         tx->tx_priority = txpriority;
1996         tx->qos_control = cpu_to_le16(qos);
1997         tx->pkt_phys_addr = cpu_to_le32(dma);
1998         tx->pkt_len = cpu_to_le16(skb->len);
1999         tx->rate_info = 0;
2000         if (!priv->ap_fw && tx_info->control.sta != NULL)
2001                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2002         else
2003                 tx->peer_id = 0;
2004
2005         if (priv->ap_fw)
2006                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2007                                                 MWL8K_HW_TIMER_REGISTER));
2008
2009         wmb();
2010         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2011
2012         txq->len++;
2013         priv->pending_tx_pkts++;
2014
2015         txq->tail++;
2016         if (txq->tail == MWL8K_TX_DESCS)
2017                 txq->tail = 0;
2018
2019         mwl8k_tx_start(priv);
2020
2021         spin_unlock_bh(&priv->tx_lock);
2022
2023         /* Initiate the ampdu session here */
2024         if (start_ba_session) {
2025                 spin_lock(&priv->stream_lock);
2026                 if (mwl8k_start_stream(hw, stream))
2027                         mwl8k_remove_stream(hw, stream);
2028                 spin_unlock(&priv->stream_lock);
2029         }
2030 }
2031
2032
2033 /*
2034  * Firmware access.
2035  *
2036  * We have the following requirements for issuing firmware commands:
2037  * - Some commands require that the packet transmit path is idle when
2038  *   the command is issued.  (For simplicity, we'll just quiesce the
2039  *   transmit path for every command.)
2040  * - There are certain sequences of commands that need to be issued to
2041  *   the hardware sequentially, with no other intervening commands.
2042  *
2043  * This leads to an implementation of a "firmware lock" as a mutex that
2044  * can be taken recursively, and which is taken by both the low-level
2045  * command submission function (mwl8k_post_cmd) as well as any users of
2046  * that function that require issuing of an atomic sequence of commands,
2047  * and quiesces the transmit path whenever it's taken.
2048  */
2049 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2050 {
2051         struct mwl8k_priv *priv = hw->priv;
2052
2053         if (priv->fw_mutex_owner != current) {
2054                 int rc;
2055
2056                 mutex_lock(&priv->fw_mutex);
2057                 ieee80211_stop_queues(hw);
2058
2059                 rc = mwl8k_tx_wait_empty(hw);
2060                 if (rc) {
2061                         ieee80211_wake_queues(hw);
2062                         mutex_unlock(&priv->fw_mutex);
2063
2064                         return rc;
2065                 }
2066
2067                 priv->fw_mutex_owner = current;
2068         }
2069
2070         priv->fw_mutex_depth++;
2071
2072         return 0;
2073 }
2074
2075 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2076 {
2077         struct mwl8k_priv *priv = hw->priv;
2078
2079         if (!--priv->fw_mutex_depth) {
2080                 ieee80211_wake_queues(hw);
2081                 priv->fw_mutex_owner = NULL;
2082                 mutex_unlock(&priv->fw_mutex);
2083         }
2084 }
2085
2086
2087 /*
2088  * Command processing.
2089  */
2090
2091 /* Timeout firmware commands after 10s */
2092 #define MWL8K_CMD_TIMEOUT_MS    10000
2093
2094 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2095 {
2096         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2097         struct mwl8k_priv *priv = hw->priv;
2098         void __iomem *regs = priv->regs;
2099         dma_addr_t dma_addr;
2100         unsigned int dma_size;
2101         int rc;
2102         unsigned long timeout = 0;
2103         u8 buf[32];
2104
2105         cmd->result = (__force __le16) 0xffff;
2106         dma_size = le16_to_cpu(cmd->length);
2107         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2108                                   PCI_DMA_BIDIRECTIONAL);
2109         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2110                 return -ENOMEM;
2111
2112         rc = mwl8k_fw_lock(hw);
2113         if (rc) {
2114                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2115                                                 PCI_DMA_BIDIRECTIONAL);
2116                 return rc;
2117         }
2118
2119         priv->hostcmd_wait = &cmd_wait;
2120         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2121         iowrite32(MWL8K_H2A_INT_DOORBELL,
2122                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2123         iowrite32(MWL8K_H2A_INT_DUMMY,
2124                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2125
2126         timeout = wait_for_completion_timeout(&cmd_wait,
2127                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2128
2129         priv->hostcmd_wait = NULL;
2130
2131         mwl8k_fw_unlock(hw);
2132
2133         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2134                                         PCI_DMA_BIDIRECTIONAL);
2135
2136         if (!timeout) {
2137                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2138                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2139                           MWL8K_CMD_TIMEOUT_MS);
2140                 rc = -ETIMEDOUT;
2141         } else {
2142                 int ms;
2143
2144                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2145
2146                 rc = cmd->result ? -EINVAL : 0;
2147                 if (rc)
2148                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2149                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2150                                   le16_to_cpu(cmd->result));
2151                 else if (ms > 2000)
2152                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2153                                      mwl8k_cmd_name(cmd->code,
2154                                                     buf, sizeof(buf)),
2155                                      ms);
2156         }
2157
2158         return rc;
2159 }
2160
2161 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2162                                  struct ieee80211_vif *vif,
2163                                  struct mwl8k_cmd_pkt *cmd)
2164 {
2165         if (vif != NULL)
2166                 cmd->macid = MWL8K_VIF(vif)->macid;
2167         return mwl8k_post_cmd(hw, cmd);
2168 }
2169
2170 /*
2171  * Setup code shared between STA and AP firmware images.
2172  */
2173 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2174 {
2175         struct mwl8k_priv *priv = hw->priv;
2176
2177         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2178         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2179
2180         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2181         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2182
2183         priv->band_24.band = IEEE80211_BAND_2GHZ;
2184         priv->band_24.channels = priv->channels_24;
2185         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2186         priv->band_24.bitrates = priv->rates_24;
2187         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2188
2189         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2190 }
2191
2192 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2193 {
2194         struct mwl8k_priv *priv = hw->priv;
2195
2196         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2197         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2198
2199         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2200         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2201
2202         priv->band_50.band = IEEE80211_BAND_5GHZ;
2203         priv->band_50.channels = priv->channels_50;
2204         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2205         priv->band_50.bitrates = priv->rates_50;
2206         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2207
2208         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2209 }
2210
2211 /*
2212  * CMD_GET_HW_SPEC (STA version).
2213  */
2214 struct mwl8k_cmd_get_hw_spec_sta {
2215         struct mwl8k_cmd_pkt header;
2216         __u8 hw_rev;
2217         __u8 host_interface;
2218         __le16 num_mcaddrs;
2219         __u8 perm_addr[ETH_ALEN];
2220         __le16 region_code;
2221         __le32 fw_rev;
2222         __le32 ps_cookie;
2223         __le32 caps;
2224         __u8 mcs_bitmap[16];
2225         __le32 rx_queue_ptr;
2226         __le32 num_tx_queues;
2227         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2228         __le32 caps2;
2229         __le32 num_tx_desc_per_queue;
2230         __le32 total_rxd;
2231 } __packed;
2232
2233 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2234 #define MWL8K_CAP_GREENFIELD            0x08000000
2235 #define MWL8K_CAP_AMPDU                 0x04000000
2236 #define MWL8K_CAP_RX_STBC               0x01000000
2237 #define MWL8K_CAP_TX_STBC               0x00800000
2238 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2239 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2240 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2241 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2242 #define MWL8K_CAP_DELAY_BA              0x00003000
2243 #define MWL8K_CAP_MIMO                  0x00000200
2244 #define MWL8K_CAP_40MHZ                 0x00000100
2245 #define MWL8K_CAP_BAND_MASK             0x00000007
2246 #define MWL8K_CAP_5GHZ                  0x00000004
2247 #define MWL8K_CAP_2GHZ4                 0x00000001
2248
2249 static void
2250 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2251                   struct ieee80211_supported_band *band, u32 cap)
2252 {
2253         int rx_streams;
2254         int tx_streams;
2255
2256         band->ht_cap.ht_supported = 1;
2257
2258         if (cap & MWL8K_CAP_MAX_AMSDU)
2259                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2260         if (cap & MWL8K_CAP_GREENFIELD)
2261                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2262         if (cap & MWL8K_CAP_AMPDU) {
2263                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2264                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2265                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2266         }
2267         if (cap & MWL8K_CAP_RX_STBC)
2268                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2269         if (cap & MWL8K_CAP_TX_STBC)
2270                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2271         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2272                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2273         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2274                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2275         if (cap & MWL8K_CAP_DELAY_BA)
2276                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2277         if (cap & MWL8K_CAP_40MHZ)
2278                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2279
2280         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2281         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2282
2283         band->ht_cap.mcs.rx_mask[0] = 0xff;
2284         if (rx_streams >= 2)
2285                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2286         if (rx_streams >= 3)
2287                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2288         band->ht_cap.mcs.rx_mask[4] = 0x01;
2289         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2290
2291         if (rx_streams != tx_streams) {
2292                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2293                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2294                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2295         }
2296 }
2297
2298 static void
2299 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2300 {
2301         struct mwl8k_priv *priv = hw->priv;
2302
2303         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2304                 mwl8k_setup_2ghz_band(hw);
2305                 if (caps & MWL8K_CAP_MIMO)
2306                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2307         }
2308
2309         if (caps & MWL8K_CAP_5GHZ) {
2310                 mwl8k_setup_5ghz_band(hw);
2311                 if (caps & MWL8K_CAP_MIMO)
2312                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2313         }
2314 }
2315
2316 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2317 {
2318         struct mwl8k_priv *priv = hw->priv;
2319         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2320         int rc;
2321         int i;
2322
2323         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2324         if (cmd == NULL)
2325                 return -ENOMEM;
2326
2327         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2328         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2329
2330         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2331         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2332         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2333         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2334         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2335                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2336         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2337         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2338
2339         rc = mwl8k_post_cmd(hw, &cmd->header);
2340
2341         if (!rc) {
2342                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2343                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2344                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2345                 priv->hw_rev = cmd->hw_rev;
2346                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2347                 priv->ap_macids_supported = 0x00000000;
2348                 priv->sta_macids_supported = 0x00000001;
2349         }
2350
2351         kfree(cmd);
2352         return rc;
2353 }
2354
2355 /*
2356  * CMD_GET_HW_SPEC (AP version).
2357  */
2358 struct mwl8k_cmd_get_hw_spec_ap {
2359         struct mwl8k_cmd_pkt header;
2360         __u8 hw_rev;
2361         __u8 host_interface;
2362         __le16 num_wcb;
2363         __le16 num_mcaddrs;
2364         __u8 perm_addr[ETH_ALEN];
2365         __le16 region_code;
2366         __le16 num_antenna;
2367         __le32 fw_rev;
2368         __le32 wcbbase0;
2369         __le32 rxwrptr;
2370         __le32 rxrdptr;
2371         __le32 ps_cookie;
2372         __le32 wcbbase1;
2373         __le32 wcbbase2;
2374         __le32 wcbbase3;
2375         __le32 fw_api_version;
2376         __le32 caps;
2377         __le32 num_of_ampdu_queues;
2378         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2379 } __packed;
2380
2381 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2382 {
2383         struct mwl8k_priv *priv = hw->priv;
2384         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2385         int rc, i;
2386         u32 api_version;
2387
2388         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2389         if (cmd == NULL)
2390                 return -ENOMEM;
2391
2392         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2393         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2394
2395         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2396         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2397
2398         rc = mwl8k_post_cmd(hw, &cmd->header);
2399
2400         if (!rc) {
2401                 int off;
2402
2403                 api_version = le32_to_cpu(cmd->fw_api_version);
2404                 if (priv->device_info->fw_api_ap != api_version) {
2405                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2406                                "  Expected %d got %d.\n", MWL8K_NAME,
2407                                priv->device_info->part_name,
2408                                priv->device_info->fw_api_ap,
2409                                api_version);
2410                         rc = -EINVAL;
2411                         goto done;
2412                 }
2413                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2414                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2415                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2416                 priv->hw_rev = cmd->hw_rev;
2417                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2418                 priv->ap_macids_supported = 0x000000ff;
2419                 priv->sta_macids_supported = 0x00000000;
2420                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2421                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2422                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2423                                    " but we only support %d.\n",
2424                                    priv->num_ampdu_queues,
2425                                    MWL8K_MAX_AMPDU_QUEUES);
2426                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2427                 }
2428                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2429                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2430
2431                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2432                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2433
2434                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2435                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2436                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2437                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2438
2439                 for (i = 0; i < priv->num_ampdu_queues; i++)
2440                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2441                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2442         }
2443
2444 done:
2445         kfree(cmd);
2446         return rc;
2447 }
2448
2449 /*
2450  * CMD_SET_HW_SPEC.
2451  */
2452 struct mwl8k_cmd_set_hw_spec {
2453         struct mwl8k_cmd_pkt header;
2454         __u8 hw_rev;
2455         __u8 host_interface;
2456         __le16 num_mcaddrs;
2457         __u8 perm_addr[ETH_ALEN];
2458         __le16 region_code;
2459         __le32 fw_rev;
2460         __le32 ps_cookie;
2461         __le32 caps;
2462         __le32 rx_queue_ptr;
2463         __le32 num_tx_queues;
2464         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2465         __le32 flags;
2466         __le32 num_tx_desc_per_queue;
2467         __le32 total_rxd;
2468 } __packed;
2469
2470 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2471  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2472  * the packets that are queued for more than 500ms, will be dropped in the
2473  * hardware. This helps minimizing the issues caused due to head-of-line
2474  * blocking where a slow client can hog the bandwidth and affect traffic to a
2475  * faster client.
2476  */
2477 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2478 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2479 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2480 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2481 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2482
2483 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2484 {
2485         struct mwl8k_priv *priv = hw->priv;
2486         struct mwl8k_cmd_set_hw_spec *cmd;
2487         int rc;
2488         int i;
2489
2490         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2491         if (cmd == NULL)
2492                 return -ENOMEM;
2493
2494         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2495         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2496
2497         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2498         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2499         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2500
2501         /*
2502          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2503          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2504          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2505          * priority is interpreted the right way in firmware.
2506          */
2507         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2508                 int j = mwl8k_tx_queues(priv) - 1 - i;
2509                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2510         }
2511
2512         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2513                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2514                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2515                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2516                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2517         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2518         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2519
2520         rc = mwl8k_post_cmd(hw, &cmd->header);
2521         kfree(cmd);
2522
2523         return rc;
2524 }
2525
2526 /*
2527  * CMD_MAC_MULTICAST_ADR.
2528  */
2529 struct mwl8k_cmd_mac_multicast_adr {
2530         struct mwl8k_cmd_pkt header;
2531         __le16 action;
2532         __le16 numaddr;
2533         __u8 addr[0][ETH_ALEN];
2534 };
2535
2536 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2537 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2538 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2539 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2540
2541 static struct mwl8k_cmd_pkt *
2542 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2543                               struct netdev_hw_addr_list *mc_list)
2544 {
2545         struct mwl8k_priv *priv = hw->priv;
2546         struct mwl8k_cmd_mac_multicast_adr *cmd;
2547         int size;
2548         int mc_count = 0;
2549
2550         if (mc_list)
2551                 mc_count = netdev_hw_addr_list_count(mc_list);
2552
2553         if (allmulti || mc_count > priv->num_mcaddrs) {
2554                 allmulti = 1;
2555                 mc_count = 0;
2556         }
2557
2558         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2559
2560         cmd = kzalloc(size, GFP_ATOMIC);
2561         if (cmd == NULL)
2562                 return NULL;
2563
2564         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2565         cmd->header.length = cpu_to_le16(size);
2566         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2567                                   MWL8K_ENABLE_RX_BROADCAST);
2568
2569         if (allmulti) {
2570                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2571         } else if (mc_count) {
2572                 struct netdev_hw_addr *ha;
2573                 int i = 0;
2574
2575                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2576                 cmd->numaddr = cpu_to_le16(mc_count);
2577                 netdev_hw_addr_list_for_each(ha, mc_list) {
2578                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2579                 }
2580         }
2581
2582         return &cmd->header;
2583 }
2584
2585 /*
2586  * CMD_GET_STAT.
2587  */
2588 struct mwl8k_cmd_get_stat {
2589         struct mwl8k_cmd_pkt header;
2590         __le32 stats[64];
2591 } __packed;
2592
2593 #define MWL8K_STAT_ACK_FAILURE  9
2594 #define MWL8K_STAT_RTS_FAILURE  12
2595 #define MWL8K_STAT_FCS_ERROR    24
2596 #define MWL8K_STAT_RTS_SUCCESS  11
2597
2598 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2599                               struct ieee80211_low_level_stats *stats)
2600 {
2601         struct mwl8k_cmd_get_stat *cmd;
2602         int rc;
2603
2604         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2605         if (cmd == NULL)
2606                 return -ENOMEM;
2607
2608         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2609         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2610
2611         rc = mwl8k_post_cmd(hw, &cmd->header);
2612         if (!rc) {
2613                 stats->dot11ACKFailureCount =
2614                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2615                 stats->dot11RTSFailureCount =
2616                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2617                 stats->dot11FCSErrorCount =
2618                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2619                 stats->dot11RTSSuccessCount =
2620                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2621         }
2622         kfree(cmd);
2623
2624         return rc;
2625 }
2626
2627 /*
2628  * CMD_RADIO_CONTROL.
2629  */
2630 struct mwl8k_cmd_radio_control {
2631         struct mwl8k_cmd_pkt header;
2632         __le16 action;
2633         __le16 control;
2634         __le16 radio_on;
2635 } __packed;
2636
2637 static int
2638 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2639 {
2640         struct mwl8k_priv *priv = hw->priv;
2641         struct mwl8k_cmd_radio_control *cmd;
2642         int rc;
2643
2644         if (enable == priv->radio_on && !force)
2645                 return 0;
2646
2647         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2648         if (cmd == NULL)
2649                 return -ENOMEM;
2650
2651         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2652         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2653         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2654         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2655         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2656
2657         rc = mwl8k_post_cmd(hw, &cmd->header);
2658         kfree(cmd);
2659
2660         if (!rc)
2661                 priv->radio_on = enable;
2662
2663         return rc;
2664 }
2665
2666 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2667 {
2668         return mwl8k_cmd_radio_control(hw, 0, 0);
2669 }
2670
2671 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2672 {
2673         return mwl8k_cmd_radio_control(hw, 1, 0);
2674 }
2675
2676 static int
2677 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2678 {
2679         struct mwl8k_priv *priv = hw->priv;
2680
2681         priv->radio_short_preamble = short_preamble;
2682
2683         return mwl8k_cmd_radio_control(hw, 1, 1);
2684 }
2685
2686 /*
2687  * CMD_RF_TX_POWER.
2688  */
2689 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2690
2691 struct mwl8k_cmd_rf_tx_power {
2692         struct mwl8k_cmd_pkt header;
2693         __le16 action;
2694         __le16 support_level;
2695         __le16 current_level;
2696         __le16 reserved;
2697         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2698 } __packed;
2699
2700 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2701 {
2702         struct mwl8k_cmd_rf_tx_power *cmd;
2703         int rc;
2704
2705         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2706         if (cmd == NULL)
2707                 return -ENOMEM;
2708
2709         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2710         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2711         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2712         cmd->support_level = cpu_to_le16(dBm);
2713
2714         rc = mwl8k_post_cmd(hw, &cmd->header);
2715         kfree(cmd);
2716
2717         return rc;
2718 }
2719
2720 /*
2721  * CMD_TX_POWER.
2722  */
2723 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2724
2725 struct mwl8k_cmd_tx_power {
2726         struct mwl8k_cmd_pkt header;
2727         __le16 action;
2728         __le16 band;
2729         __le16 channel;
2730         __le16 bw;
2731         __le16 sub_ch;
2732         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2733 } __packed;
2734
2735 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2736                                      struct ieee80211_conf *conf,
2737                                      unsigned short pwr)
2738 {
2739         struct ieee80211_channel *channel = conf->channel;
2740         struct mwl8k_cmd_tx_power *cmd;
2741         int rc;
2742         int i;
2743
2744         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2745         if (cmd == NULL)
2746                 return -ENOMEM;
2747
2748         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2749         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2750         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2751
2752         if (channel->band == IEEE80211_BAND_2GHZ)
2753                 cmd->band = cpu_to_le16(0x1);
2754         else if (channel->band == IEEE80211_BAND_5GHZ)
2755                 cmd->band = cpu_to_le16(0x4);
2756
2757         cmd->channel = channel->hw_value;
2758
2759         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2760             conf->channel_type == NL80211_CHAN_HT20) {
2761                 cmd->bw = cpu_to_le16(0x2);
2762         } else {
2763                 cmd->bw = cpu_to_le16(0x4);
2764                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2765                         cmd->sub_ch = cpu_to_le16(0x3);
2766                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2767                         cmd->sub_ch = cpu_to_le16(0x1);
2768         }
2769
2770         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2771                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2772
2773         rc = mwl8k_post_cmd(hw, &cmd->header);
2774         kfree(cmd);
2775
2776         return rc;
2777 }
2778
2779 /*
2780  * CMD_RF_ANTENNA.
2781  */
2782 struct mwl8k_cmd_rf_antenna {
2783         struct mwl8k_cmd_pkt header;
2784         __le16 antenna;
2785         __le16 mode;
2786 } __packed;
2787
2788 #define MWL8K_RF_ANTENNA_RX             1
2789 #define MWL8K_RF_ANTENNA_TX             2
2790
2791 static int
2792 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2793 {
2794         struct mwl8k_cmd_rf_antenna *cmd;
2795         int rc;
2796
2797         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2798         if (cmd == NULL)
2799                 return -ENOMEM;
2800
2801         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2802         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2803         cmd->antenna = cpu_to_le16(antenna);
2804         cmd->mode = cpu_to_le16(mask);
2805
2806         rc = mwl8k_post_cmd(hw, &cmd->header);
2807         kfree(cmd);
2808
2809         return rc;
2810 }
2811
2812 /*
2813  * CMD_SET_BEACON.
2814  */
2815 struct mwl8k_cmd_set_beacon {
2816         struct mwl8k_cmd_pkt header;
2817         __le16 beacon_len;
2818         __u8 beacon[0];
2819 };
2820
2821 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2822                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2823 {
2824         struct mwl8k_cmd_set_beacon *cmd;
2825         int rc;
2826
2827         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2828         if (cmd == NULL)
2829                 return -ENOMEM;
2830
2831         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2832         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2833         cmd->beacon_len = cpu_to_le16(len);
2834         memcpy(cmd->beacon, beacon, len);
2835
2836         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2837         kfree(cmd);
2838
2839         return rc;
2840 }
2841
2842 /*
2843  * CMD_SET_PRE_SCAN.
2844  */
2845 struct mwl8k_cmd_set_pre_scan {
2846         struct mwl8k_cmd_pkt header;
2847 } __packed;
2848
2849 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2850 {
2851         struct mwl8k_cmd_set_pre_scan *cmd;
2852         int rc;
2853
2854         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2855         if (cmd == NULL)
2856                 return -ENOMEM;
2857
2858         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2859         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2860
2861         rc = mwl8k_post_cmd(hw, &cmd->header);
2862         kfree(cmd);
2863
2864         return rc;
2865 }
2866
2867 /*
2868  * CMD_SET_POST_SCAN.
2869  */
2870 struct mwl8k_cmd_set_post_scan {
2871         struct mwl8k_cmd_pkt header;
2872         __le32 isibss;
2873         __u8 bssid[ETH_ALEN];
2874 } __packed;
2875
2876 static int
2877 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2878 {
2879         struct mwl8k_cmd_set_post_scan *cmd;
2880         int rc;
2881
2882         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2883         if (cmd == NULL)
2884                 return -ENOMEM;
2885
2886         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2887         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2888         cmd->isibss = 0;
2889         memcpy(cmd->bssid, mac, ETH_ALEN);
2890
2891         rc = mwl8k_post_cmd(hw, &cmd->header);
2892         kfree(cmd);
2893
2894         return rc;
2895 }
2896
2897 /*
2898  * CMD_SET_RF_CHANNEL.
2899  */
2900 struct mwl8k_cmd_set_rf_channel {
2901         struct mwl8k_cmd_pkt header;
2902         __le16 action;
2903         __u8 current_channel;
2904         __le32 channel_flags;
2905 } __packed;
2906
2907 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2908                                     struct ieee80211_conf *conf)
2909 {
2910         struct ieee80211_channel *channel = conf->channel;
2911         struct mwl8k_cmd_set_rf_channel *cmd;
2912         int rc;
2913
2914         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2915         if (cmd == NULL)
2916                 return -ENOMEM;
2917
2918         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2919         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2920         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2921         cmd->current_channel = channel->hw_value;
2922
2923         if (channel->band == IEEE80211_BAND_2GHZ)
2924                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2925         else if (channel->band == IEEE80211_BAND_5GHZ)
2926                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2927
2928         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2929             conf->channel_type == NL80211_CHAN_HT20)
2930                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2931         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2932                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2933         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2934                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2935
2936         rc = mwl8k_post_cmd(hw, &cmd->header);
2937         kfree(cmd);
2938
2939         return rc;
2940 }
2941
2942 /*
2943  * CMD_SET_AID.
2944  */
2945 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2946 #define MWL8K_FRAME_PROT_11G                            0x07
2947 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2948 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2949
2950 struct mwl8k_cmd_update_set_aid {
2951         struct  mwl8k_cmd_pkt header;
2952         __le16  aid;
2953
2954          /* AP's MAC address (BSSID) */
2955         __u8    bssid[ETH_ALEN];
2956         __le16  protection_mode;
2957         __u8    supp_rates[14];
2958 } __packed;
2959
2960 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2961 {
2962         int i;
2963         int j;
2964
2965         /*
2966          * Clear nonstandard rates 4 and 13.
2967          */
2968         mask &= 0x1fef;
2969
2970         for (i = 0, j = 0; i < 14; i++) {
2971                 if (mask & (1 << i))
2972                         rates[j++] = mwl8k_rates_24[i].hw_value;
2973         }
2974 }
2975
2976 static int
2977 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2978                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2979 {
2980         struct mwl8k_cmd_update_set_aid *cmd;
2981         u16 prot_mode;
2982         int rc;
2983
2984         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2985         if (cmd == NULL)
2986                 return -ENOMEM;
2987
2988         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2989         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2990         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2991         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2992
2993         if (vif->bss_conf.use_cts_prot) {
2994                 prot_mode = MWL8K_FRAME_PROT_11G;
2995         } else {
2996                 switch (vif->bss_conf.ht_operation_mode &
2997                         IEEE80211_HT_OP_MODE_PROTECTION) {
2998                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2999                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3000                         break;
3001                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3002                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3003                         break;
3004                 default:
3005                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3006                         break;
3007                 }
3008         }
3009         cmd->protection_mode = cpu_to_le16(prot_mode);
3010
3011         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3012
3013         rc = mwl8k_post_cmd(hw, &cmd->header);
3014         kfree(cmd);
3015
3016         return rc;
3017 }
3018
3019 /*
3020  * CMD_SET_RATE.
3021  */
3022 struct mwl8k_cmd_set_rate {
3023         struct  mwl8k_cmd_pkt header;
3024         __u8    legacy_rates[14];
3025
3026         /* Bitmap for supported MCS codes.  */
3027         __u8    mcs_set[16];
3028         __u8    reserved[16];
3029 } __packed;
3030
3031 static int
3032 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3033                    u32 legacy_rate_mask, u8 *mcs_rates)
3034 {
3035         struct mwl8k_cmd_set_rate *cmd;
3036         int rc;
3037
3038         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3039         if (cmd == NULL)
3040                 return -ENOMEM;
3041
3042         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3043         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3044         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3045         memcpy(cmd->mcs_set, mcs_rates, 16);
3046
3047         rc = mwl8k_post_cmd(hw, &cmd->header);
3048         kfree(cmd);
3049
3050         return rc;
3051 }
3052
3053 /*
3054  * CMD_FINALIZE_JOIN.
3055  */
3056 #define MWL8K_FJ_BEACON_MAXLEN  128
3057
3058 struct mwl8k_cmd_finalize_join {
3059         struct mwl8k_cmd_pkt header;
3060         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3061         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3062 } __packed;
3063
3064 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3065                                    int framelen, int dtim)
3066 {
3067         struct mwl8k_cmd_finalize_join *cmd;
3068         struct ieee80211_mgmt *payload = frame;
3069         int payload_len;
3070         int rc;
3071
3072         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3073         if (cmd == NULL)
3074                 return -ENOMEM;
3075
3076         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3077         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3078         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3079
3080         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3081         if (payload_len < 0)
3082                 payload_len = 0;
3083         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3084                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3085
3086         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3087
3088         rc = mwl8k_post_cmd(hw, &cmd->header);
3089         kfree(cmd);
3090
3091         return rc;
3092 }
3093
3094 /*
3095  * CMD_SET_RTS_THRESHOLD.
3096  */
3097 struct mwl8k_cmd_set_rts_threshold {
3098         struct mwl8k_cmd_pkt header;
3099         __le16 action;
3100         __le16 threshold;
3101 } __packed;
3102
3103 static int
3104 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3105 {
3106         struct mwl8k_cmd_set_rts_threshold *cmd;
3107         int rc;
3108
3109         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3110         if (cmd == NULL)
3111                 return -ENOMEM;
3112
3113         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3114         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3115         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3116         cmd->threshold = cpu_to_le16(rts_thresh);
3117
3118         rc = mwl8k_post_cmd(hw, &cmd->header);
3119         kfree(cmd);
3120
3121         return rc;
3122 }
3123
3124 /*
3125  * CMD_SET_SLOT.
3126  */
3127 struct mwl8k_cmd_set_slot {
3128         struct mwl8k_cmd_pkt header;
3129         __le16 action;
3130         __u8 short_slot;
3131 } __packed;
3132
3133 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3134 {
3135         struct mwl8k_cmd_set_slot *cmd;
3136         int rc;
3137
3138         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3139         if (cmd == NULL)
3140                 return -ENOMEM;
3141
3142         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3143         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3144         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3145         cmd->short_slot = short_slot_time;
3146
3147         rc = mwl8k_post_cmd(hw, &cmd->header);
3148         kfree(cmd);
3149
3150         return rc;
3151 }
3152
3153 /*
3154  * CMD_SET_EDCA_PARAMS.
3155  */
3156 struct mwl8k_cmd_set_edca_params {
3157         struct mwl8k_cmd_pkt header;
3158
3159         /* See MWL8K_SET_EDCA_XXX below */
3160         __le16 action;
3161
3162         /* TX opportunity in units of 32 us */
3163         __le16 txop;
3164
3165         union {
3166                 struct {
3167                         /* Log exponent of max contention period: 0...15 */
3168                         __le32 log_cw_max;
3169
3170                         /* Log exponent of min contention period: 0...15 */
3171                         __le32 log_cw_min;
3172
3173                         /* Adaptive interframe spacing in units of 32us */
3174                         __u8 aifs;
3175
3176                         /* TX queue to configure */
3177                         __u8 txq;
3178                 } ap;
3179                 struct {
3180                         /* Log exponent of max contention period: 0...15 */
3181                         __u8 log_cw_max;
3182
3183                         /* Log exponent of min contention period: 0...15 */
3184                         __u8 log_cw_min;
3185
3186                         /* Adaptive interframe spacing in units of 32us */
3187                         __u8 aifs;
3188
3189                         /* TX queue to configure */
3190                         __u8 txq;
3191                 } sta;
3192         };
3193 } __packed;
3194
3195 #define MWL8K_SET_EDCA_CW       0x01
3196 #define MWL8K_SET_EDCA_TXOP     0x02
3197 #define MWL8K_SET_EDCA_AIFS     0x04
3198
3199 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3200                                  MWL8K_SET_EDCA_TXOP | \
3201                                  MWL8K_SET_EDCA_AIFS)
3202
3203 static int
3204 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3205                           __u16 cw_min, __u16 cw_max,
3206                           __u8 aifs, __u16 txop)
3207 {
3208         struct mwl8k_priv *priv = hw->priv;
3209         struct mwl8k_cmd_set_edca_params *cmd;
3210         int rc;
3211
3212         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3213         if (cmd == NULL)
3214                 return -ENOMEM;
3215
3216         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3217         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3218         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3219         cmd->txop = cpu_to_le16(txop);
3220         if (priv->ap_fw) {
3221                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3222                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3223                 cmd->ap.aifs = aifs;
3224                 cmd->ap.txq = qnum;
3225         } else {
3226                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3227                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3228                 cmd->sta.aifs = aifs;
3229                 cmd->sta.txq = qnum;
3230         }
3231
3232         rc = mwl8k_post_cmd(hw, &cmd->header);
3233         kfree(cmd);
3234
3235         return rc;
3236 }
3237
3238 /*
3239  * CMD_SET_WMM_MODE.
3240  */
3241 struct mwl8k_cmd_set_wmm_mode {
3242         struct mwl8k_cmd_pkt header;
3243         __le16 action;
3244 } __packed;
3245
3246 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3247 {
3248         struct mwl8k_priv *priv = hw->priv;
3249         struct mwl8k_cmd_set_wmm_mode *cmd;
3250         int rc;
3251
3252         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3253         if (cmd == NULL)
3254                 return -ENOMEM;
3255
3256         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3257         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3258         cmd->action = cpu_to_le16(!!enable);
3259
3260         rc = mwl8k_post_cmd(hw, &cmd->header);
3261         kfree(cmd);
3262
3263         if (!rc)
3264                 priv->wmm_enabled = enable;
3265
3266         return rc;
3267 }
3268
3269 /*
3270  * CMD_MIMO_CONFIG.
3271  */
3272 struct mwl8k_cmd_mimo_config {
3273         struct mwl8k_cmd_pkt header;
3274         __le32 action;
3275         __u8 rx_antenna_map;
3276         __u8 tx_antenna_map;
3277 } __packed;
3278
3279 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3280 {
3281         struct mwl8k_cmd_mimo_config *cmd;
3282         int rc;
3283
3284         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3285         if (cmd == NULL)
3286                 return -ENOMEM;
3287
3288         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3289         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3290         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3291         cmd->rx_antenna_map = rx;
3292         cmd->tx_antenna_map = tx;
3293
3294         rc = mwl8k_post_cmd(hw, &cmd->header);
3295         kfree(cmd);
3296
3297         return rc;
3298 }
3299
3300 /*
3301  * CMD_USE_FIXED_RATE (STA version).
3302  */
3303 struct mwl8k_cmd_use_fixed_rate_sta {
3304         struct mwl8k_cmd_pkt header;
3305         __le32 action;
3306         __le32 allow_rate_drop;
3307         __le32 num_rates;
3308         struct {
3309                 __le32 is_ht_rate;
3310                 __le32 enable_retry;
3311                 __le32 rate;
3312                 __le32 retry_count;
3313         } rate_entry[8];
3314         __le32 rate_type;
3315         __le32 reserved1;
3316         __le32 reserved2;
3317 } __packed;
3318
3319 #define MWL8K_USE_AUTO_RATE     0x0002
3320 #define MWL8K_UCAST_RATE        0
3321
3322 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3323 {
3324         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3325         int rc;
3326
3327         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3328         if (cmd == NULL)
3329                 return -ENOMEM;
3330
3331         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3332         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3333         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3334         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3335
3336         rc = mwl8k_post_cmd(hw, &cmd->header);
3337         kfree(cmd);
3338
3339         return rc;
3340 }
3341
3342 /*
3343  * CMD_USE_FIXED_RATE (AP version).
3344  */
3345 struct mwl8k_cmd_use_fixed_rate_ap {
3346         struct mwl8k_cmd_pkt header;
3347         __le32 action;
3348         __le32 allow_rate_drop;
3349         __le32 num_rates;
3350         struct mwl8k_rate_entry_ap {
3351                 __le32 is_ht_rate;
3352                 __le32 enable_retry;
3353                 __le32 rate;
3354                 __le32 retry_count;
3355         } rate_entry[4];
3356         u8 multicast_rate;
3357         u8 multicast_rate_type;
3358         u8 management_rate;
3359 } __packed;
3360
3361 static int
3362 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3363 {
3364         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3365         int rc;
3366
3367         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3368         if (cmd == NULL)
3369                 return -ENOMEM;
3370
3371         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3372         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3373         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3374         cmd->multicast_rate = mcast;
3375         cmd->management_rate = mgmt;
3376
3377         rc = mwl8k_post_cmd(hw, &cmd->header);
3378         kfree(cmd);
3379
3380         return rc;
3381 }
3382
3383 /*
3384  * CMD_ENABLE_SNIFFER.
3385  */
3386 struct mwl8k_cmd_enable_sniffer {
3387         struct mwl8k_cmd_pkt header;
3388         __le32 action;
3389 } __packed;
3390
3391 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3392 {
3393         struct mwl8k_cmd_enable_sniffer *cmd;
3394         int rc;
3395
3396         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3397         if (cmd == NULL)
3398                 return -ENOMEM;
3399
3400         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3401         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3402         cmd->action = cpu_to_le32(!!enable);
3403
3404         rc = mwl8k_post_cmd(hw, &cmd->header);
3405         kfree(cmd);
3406
3407         return rc;
3408 }
3409
3410 /*
3411  * CMD_SET_MAC_ADDR.
3412  */
3413 struct mwl8k_cmd_set_mac_addr {
3414         struct mwl8k_cmd_pkt header;
3415         union {
3416                 struct {
3417                         __le16 mac_type;
3418                         __u8 mac_addr[ETH_ALEN];
3419                 } mbss;
3420                 __u8 mac_addr[ETH_ALEN];
3421         };
3422 } __packed;
3423
3424 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3425 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3426 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3427 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3428
3429 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3430                                   struct ieee80211_vif *vif, u8 *mac)
3431 {
3432         struct mwl8k_priv *priv = hw->priv;
3433         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3434         struct mwl8k_cmd_set_mac_addr *cmd;
3435         int mac_type;
3436         int rc;
3437
3438         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3439         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3440                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3441                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3442                 else
3443                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3444         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3445                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3446                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3447                 else
3448                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3449         }
3450
3451         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3452         if (cmd == NULL)
3453                 return -ENOMEM;
3454
3455         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3456         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3457         if (priv->ap_fw) {
3458                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3459                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3460         } else {
3461                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3462         }
3463
3464         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3465         kfree(cmd);
3466
3467         return rc;
3468 }
3469
3470 /*
3471  * CMD_SET_RATEADAPT_MODE.
3472  */
3473 struct mwl8k_cmd_set_rate_adapt_mode {
3474         struct mwl8k_cmd_pkt header;
3475         __le16 action;
3476         __le16 mode;
3477 } __packed;
3478
3479 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3480 {
3481         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3482         int rc;
3483
3484         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3485         if (cmd == NULL)
3486                 return -ENOMEM;
3487
3488         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3489         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3490         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3491         cmd->mode = cpu_to_le16(mode);
3492
3493         rc = mwl8k_post_cmd(hw, &cmd->header);
3494         kfree(cmd);
3495
3496         return rc;
3497 }
3498
3499 /*
3500  * CMD_GET_WATCHDOG_BITMAP.
3501  */
3502 struct mwl8k_cmd_get_watchdog_bitmap {
3503         struct mwl8k_cmd_pkt header;
3504         u8      bitmap;
3505 } __packed;
3506
3507 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3508 {
3509         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3510         int rc;
3511
3512         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3513         if (cmd == NULL)
3514                 return -ENOMEM;
3515
3516         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3517         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3518
3519         rc = mwl8k_post_cmd(hw, &cmd->header);
3520         if (!rc)
3521                 *bitmap = cmd->bitmap;
3522
3523         kfree(cmd);
3524
3525         return rc;
3526 }
3527
3528 #define INVALID_BA      0xAA
3529 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3530 {
3531         int rc;
3532         u8 bitmap = 0, stream_index;
3533         struct mwl8k_ampdu_stream *streams;
3534         struct mwl8k_priv *priv =
3535                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3536
3537         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3538         if (rc)
3539                 return;
3540
3541         if (bitmap == INVALID_BA)
3542                 return;
3543
3544         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3545         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3546
3547         BUG_ON(stream_index >= priv->num_ampdu_queues);
3548
3549         streams = &priv->ampdu[stream_index];
3550
3551         if (streams->state == AMPDU_STREAM_ACTIVE)
3552                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3553
3554         return;
3555 }
3556
3557
3558 /*
3559  * CMD_BSS_START.
3560  */
3561 struct mwl8k_cmd_bss_start {
3562         struct mwl8k_cmd_pkt header;
3563         __le32 enable;
3564 } __packed;
3565
3566 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3567                                struct ieee80211_vif *vif, int enable)
3568 {
3569         struct mwl8k_cmd_bss_start *cmd;
3570         int rc;
3571
3572         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3573         if (cmd == NULL)
3574                 return -ENOMEM;
3575
3576         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3577         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3578         cmd->enable = cpu_to_le32(enable);
3579
3580         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3581         kfree(cmd);
3582
3583         return rc;
3584 }
3585
3586 /*
3587  * CMD_BASTREAM.
3588  */
3589
3590 /*
3591  * UPSTREAM is tx direction
3592  */
3593 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3594 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3595
3596 enum ba_stream_action_type {
3597         MWL8K_BA_CREATE,
3598         MWL8K_BA_UPDATE,
3599         MWL8K_BA_DESTROY,
3600         MWL8K_BA_FLUSH,
3601         MWL8K_BA_CHECK,
3602 };
3603
3604
3605 struct mwl8k_create_ba_stream {
3606         __le32  flags;
3607         __le32  idle_thrs;
3608         __le32  bar_thrs;
3609         __le32  window_size;
3610         u8      peer_mac_addr[6];
3611         u8      dialog_token;
3612         u8      tid;
3613         u8      queue_id;
3614         u8      param_info;
3615         __le32  ba_context;
3616         u8      reset_seq_no_flag;
3617         __le16  curr_seq_no;
3618         u8      sta_src_mac_addr[6];
3619 } __packed;
3620
3621 struct mwl8k_destroy_ba_stream {
3622         __le32  flags;
3623         __le32  ba_context;
3624 } __packed;
3625
3626 struct mwl8k_cmd_bastream {
3627         struct mwl8k_cmd_pkt    header;
3628         __le32  action;
3629         union {
3630                 struct mwl8k_create_ba_stream   create_params;
3631                 struct mwl8k_destroy_ba_stream  destroy_params;
3632         };
3633 } __packed;
3634
3635 static int
3636 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3637 {
3638         struct mwl8k_cmd_bastream *cmd;
3639         int rc;
3640
3641         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3642         if (cmd == NULL)
3643                 return -ENOMEM;
3644
3645         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3646         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3647
3648         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3649
3650         cmd->create_params.queue_id = stream->idx;
3651         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3652                ETH_ALEN);
3653         cmd->create_params.tid = stream->tid;
3654
3655         cmd->create_params.flags =
3656                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3657                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3658
3659         rc = mwl8k_post_cmd(hw, &cmd->header);
3660
3661         kfree(cmd);
3662
3663         return rc;
3664 }
3665
3666 static int
3667 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3668                 u8 buf_size)
3669 {
3670         struct mwl8k_cmd_bastream *cmd;
3671         int rc;
3672
3673         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3674         if (cmd == NULL)
3675                 return -ENOMEM;
3676
3677
3678         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3679         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3680
3681         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3682
3683         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3684         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3685         cmd->create_params.queue_id = stream->idx;
3686
3687         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3688         cmd->create_params.tid = stream->tid;
3689         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3690         cmd->create_params.reset_seq_no_flag = 1;
3691
3692         cmd->create_params.param_info =
3693                 (stream->sta->ht_cap.ampdu_factor &
3694                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3695                 ((stream->sta->ht_cap.ampdu_density << 2) &
3696                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3697
3698         cmd->create_params.flags =
3699                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3700                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3701
3702         rc = mwl8k_post_cmd(hw, &cmd->header);
3703
3704         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3705                 stream->sta->addr, stream->tid);
3706         kfree(cmd);
3707
3708         return rc;
3709 }
3710
3711 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3712                              struct mwl8k_ampdu_stream *stream)
3713 {
3714         struct mwl8k_cmd_bastream *cmd;
3715
3716         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3717         if (cmd == NULL)
3718                 return;
3719
3720         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3721         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3722         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3723
3724         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3725         mwl8k_post_cmd(hw, &cmd->header);
3726
3727         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3728
3729         kfree(cmd);
3730 }
3731
3732 /*
3733  * CMD_SET_NEW_STN.
3734  */
3735 struct mwl8k_cmd_set_new_stn {
3736         struct mwl8k_cmd_pkt header;
3737         __le16 aid;
3738         __u8 mac_addr[6];
3739         __le16 stn_id;
3740         __le16 action;
3741         __le16 rsvd;
3742         __le32 legacy_rates;
3743         __u8 ht_rates[4];
3744         __le16 cap_info;
3745         __le16 ht_capabilities_info;
3746         __u8 mac_ht_param_info;
3747         __u8 rev;
3748         __u8 control_channel;
3749         __u8 add_channel;
3750         __le16 op_mode;
3751         __le16 stbc;
3752         __u8 add_qos_info;
3753         __u8 is_qos_sta;
3754         __le32 fw_sta_ptr;
3755 } __packed;
3756
3757 #define MWL8K_STA_ACTION_ADD            0
3758 #define MWL8K_STA_ACTION_REMOVE         2
3759
3760 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3761                                      struct ieee80211_vif *vif,
3762                                      struct ieee80211_sta *sta)
3763 {
3764         struct mwl8k_cmd_set_new_stn *cmd;
3765         u32 rates;
3766         int rc;
3767
3768         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3769         if (cmd == NULL)
3770                 return -ENOMEM;
3771
3772         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3773         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3774         cmd->aid = cpu_to_le16(sta->aid);
3775         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3776         cmd->stn_id = cpu_to_le16(sta->aid);
3777         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3778         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3779                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3780         else
3781                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3782         cmd->legacy_rates = cpu_to_le32(rates);
3783         if (sta->ht_cap.ht_supported) {
3784                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3785                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3786                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3787                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3788                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3789                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3790                         ((sta->ht_cap.ampdu_density & 7) << 2);
3791                 cmd->is_qos_sta = 1;
3792         }
3793
3794         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3795         kfree(cmd);
3796
3797         return rc;
3798 }
3799
3800 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3801                                           struct ieee80211_vif *vif)
3802 {
3803         struct mwl8k_cmd_set_new_stn *cmd;
3804         int rc;
3805
3806         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3807         if (cmd == NULL)
3808                 return -ENOMEM;
3809
3810         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3811         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3812         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3813
3814         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3815         kfree(cmd);
3816
3817         return rc;
3818 }
3819
3820 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3821                                      struct ieee80211_vif *vif, u8 *addr)
3822 {
3823         struct mwl8k_cmd_set_new_stn *cmd;
3824         int rc;
3825
3826         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3827         if (cmd == NULL)
3828                 return -ENOMEM;
3829
3830         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3831         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3832         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3833         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3834
3835         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3836         kfree(cmd);
3837
3838         return rc;
3839 }
3840
3841 /*
3842  * CMD_UPDATE_ENCRYPTION.
3843  */
3844
3845 #define MAX_ENCR_KEY_LENGTH     16
3846 #define MIC_KEY_LENGTH          8
3847
3848 struct mwl8k_cmd_update_encryption {
3849         struct mwl8k_cmd_pkt header;
3850
3851         __le32 action;
3852         __le32 reserved;
3853         __u8 mac_addr[6];
3854         __u8 encr_type;
3855
3856 } __packed;
3857
3858 struct mwl8k_cmd_set_key {
3859         struct mwl8k_cmd_pkt header;
3860
3861         __le32 action;
3862         __le32 reserved;
3863         __le16 length;
3864         __le16 key_type_id;
3865         __le32 key_info;
3866         __le32 key_id;
3867         __le16 key_len;
3868         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3869         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3870         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3871         __le16 tkip_rsc_low;
3872         __le32 tkip_rsc_high;
3873         __le16 tkip_tsc_low;
3874         __le32 tkip_tsc_high;
3875         __u8 mac_addr[6];
3876 } __packed;
3877
3878 enum {
3879         MWL8K_ENCR_ENABLE,
3880         MWL8K_ENCR_SET_KEY,
3881         MWL8K_ENCR_REMOVE_KEY,
3882         MWL8K_ENCR_SET_GROUP_KEY,
3883 };
3884
3885 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3886 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3887 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3888 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3889 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3890
3891 enum {
3892         MWL8K_ALG_WEP,
3893         MWL8K_ALG_TKIP,
3894         MWL8K_ALG_CCMP,
3895 };
3896
3897 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3898 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3899 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3900 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3901 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3902
3903 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3904                                               struct ieee80211_vif *vif,
3905                                               u8 *addr,
3906                                               u8 encr_type)
3907 {
3908         struct mwl8k_cmd_update_encryption *cmd;
3909         int rc;
3910
3911         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3912         if (cmd == NULL)
3913                 return -ENOMEM;
3914
3915         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3916         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3917         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3918         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3919         cmd->encr_type = encr_type;
3920
3921         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3922         kfree(cmd);
3923
3924         return rc;
3925 }
3926
3927 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3928                                                 u8 *addr,
3929                                                 struct ieee80211_key_conf *key)
3930 {
3931         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3932         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3933         cmd->length = cpu_to_le16(sizeof(*cmd) -
3934                                 offsetof(struct mwl8k_cmd_set_key, length));
3935         cmd->key_id = cpu_to_le32(key->keyidx);
3936         cmd->key_len = cpu_to_le16(key->keylen);
3937         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3938
3939         switch (key->cipher) {
3940         case WLAN_CIPHER_SUITE_WEP40:
3941         case WLAN_CIPHER_SUITE_WEP104:
3942                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3943                 if (key->keyidx == 0)
3944                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3945
3946                 break;
3947         case WLAN_CIPHER_SUITE_TKIP:
3948                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3949                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3950                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3951                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3952                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3953                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3954                 break;
3955         case WLAN_CIPHER_SUITE_CCMP:
3956                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3957                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3958                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3959                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3960                 break;
3961         default:
3962                 return -ENOTSUPP;
3963         }
3964
3965         return 0;
3966 }
3967
3968 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3969                                                 struct ieee80211_vif *vif,
3970                                                 u8 *addr,
3971                                                 struct ieee80211_key_conf *key)
3972 {
3973         struct mwl8k_cmd_set_key *cmd;
3974         int rc;
3975         int keymlen;
3976         u32 action;
3977         u8 idx;
3978         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3979
3980         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3981         if (cmd == NULL)
3982                 return -ENOMEM;
3983
3984         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3985         if (rc < 0)
3986                 goto done;
3987
3988         idx = key->keyidx;
3989
3990         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3991                 action = MWL8K_ENCR_SET_KEY;
3992         else
3993                 action = MWL8K_ENCR_SET_GROUP_KEY;
3994
3995         switch (key->cipher) {
3996         case WLAN_CIPHER_SUITE_WEP40:
3997         case WLAN_CIPHER_SUITE_WEP104:
3998                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3999                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4000                                                 sizeof(*key) + key->keylen);
4001                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4002                 }
4003
4004                 keymlen = key->keylen;
4005                 action = MWL8K_ENCR_SET_KEY;
4006                 break;
4007         case WLAN_CIPHER_SUITE_TKIP:
4008                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4009                 break;
4010         case WLAN_CIPHER_SUITE_CCMP:
4011                 keymlen = key->keylen;
4012                 break;
4013         default:
4014                 rc = -ENOTSUPP;
4015                 goto done;
4016         }
4017
4018         memcpy(cmd->key_material, key->key, keymlen);
4019         cmd->action = cpu_to_le32(action);
4020
4021         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4022 done:
4023         kfree(cmd);
4024
4025         return rc;
4026 }
4027
4028 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4029                                                 struct ieee80211_vif *vif,
4030                                                 u8 *addr,
4031                                                 struct ieee80211_key_conf *key)
4032 {
4033         struct mwl8k_cmd_set_key *cmd;
4034         int rc;
4035         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4036
4037         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4038         if (cmd == NULL)
4039                 return -ENOMEM;
4040
4041         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4042         if (rc < 0)
4043                 goto done;
4044
4045         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4046                         WLAN_CIPHER_SUITE_WEP104)
4047                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4048
4049         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4050
4051         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4052 done:
4053         kfree(cmd);
4054
4055         return rc;
4056 }
4057
4058 static int mwl8k_set_key(struct ieee80211_hw *hw,
4059                          enum set_key_cmd cmd_param,
4060                          struct ieee80211_vif *vif,
4061                          struct ieee80211_sta *sta,
4062                          struct ieee80211_key_conf *key)
4063 {
4064         int rc = 0;
4065         u8 encr_type;
4066         u8 *addr;
4067         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4068
4069         if (vif->type == NL80211_IFTYPE_STATION)
4070                 return -EOPNOTSUPP;
4071
4072         if (sta == NULL)
4073                 addr = hw->wiphy->perm_addr;
4074         else
4075                 addr = sta->addr;
4076
4077         if (cmd_param == SET_KEY) {
4078                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4079                 if (rc)
4080                         goto out;
4081
4082                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4083                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4084                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4085                 else
4086                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4087
4088                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4089                                                                 encr_type);
4090                 if (rc)
4091                         goto out;
4092
4093                 mwl8k_vif->is_hw_crypto_enabled = true;
4094
4095         } else {
4096                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4097
4098                 if (rc)
4099                         goto out;
4100         }
4101 out:
4102         return rc;
4103 }
4104
4105 /*
4106  * CMD_UPDATE_STADB.
4107  */
4108 struct ewc_ht_info {
4109         __le16  control1;
4110         __le16  control2;
4111         __le16  control3;
4112 } __packed;
4113
4114 struct peer_capability_info {
4115         /* Peer type - AP vs. STA.  */
4116         __u8    peer_type;
4117
4118         /* Basic 802.11 capabilities from assoc resp.  */
4119         __le16  basic_caps;
4120
4121         /* Set if peer supports 802.11n high throughput (HT).  */
4122         __u8    ht_support;
4123
4124         /* Valid if HT is supported.  */
4125         __le16  ht_caps;
4126         __u8    extended_ht_caps;
4127         struct ewc_ht_info      ewc_info;
4128
4129         /* Legacy rate table. Intersection of our rates and peer rates.  */
4130         __u8    legacy_rates[12];
4131
4132         /* HT rate table. Intersection of our rates and peer rates.  */
4133         __u8    ht_rates[16];
4134         __u8    pad[16];
4135
4136         /* If set, interoperability mode, no proprietary extensions.  */
4137         __u8    interop;
4138         __u8    pad2;
4139         __u8    station_id;
4140         __le16  amsdu_enabled;
4141 } __packed;
4142
4143 struct mwl8k_cmd_update_stadb {
4144         struct mwl8k_cmd_pkt header;
4145
4146         /* See STADB_ACTION_TYPE */
4147         __le32  action;
4148
4149         /* Peer MAC address */
4150         __u8    peer_addr[ETH_ALEN];
4151
4152         __le32  reserved;
4153
4154         /* Peer info - valid during add/update.  */
4155         struct peer_capability_info     peer_info;
4156 } __packed;
4157
4158 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4159 #define MWL8K_STA_DB_DEL_ENTRY          2
4160
4161 /* Peer Entry flags - used to define the type of the peer node */
4162 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4163
4164 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4165                                       struct ieee80211_vif *vif,
4166                                       struct ieee80211_sta *sta)
4167 {
4168         struct mwl8k_cmd_update_stadb *cmd;
4169         struct peer_capability_info *p;
4170         u32 rates;
4171         int rc;
4172
4173         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4174         if (cmd == NULL)
4175                 return -ENOMEM;
4176
4177         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4178         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4179         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4180         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4181
4182         p = &cmd->peer_info;
4183         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4184         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4185         p->ht_support = sta->ht_cap.ht_supported;
4186         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4187         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4188                 ((sta->ht_cap.ampdu_density & 7) << 2);
4189         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4190                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4191         else
4192                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4193         legacy_rate_mask_to_array(p->legacy_rates, rates);
4194         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4195         p->interop = 1;
4196         p->amsdu_enabled = 0;
4197
4198         rc = mwl8k_post_cmd(hw, &cmd->header);
4199         kfree(cmd);
4200
4201         return rc ? rc : p->station_id;
4202 }
4203
4204 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4205                                       struct ieee80211_vif *vif, u8 *addr)
4206 {
4207         struct mwl8k_cmd_update_stadb *cmd;
4208         int rc;
4209
4210         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4211         if (cmd == NULL)
4212                 return -ENOMEM;
4213
4214         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4215         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4216         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4217         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4218
4219         rc = mwl8k_post_cmd(hw, &cmd->header);
4220         kfree(cmd);
4221
4222         return rc;
4223 }
4224
4225
4226 /*
4227  * Interrupt handling.
4228  */
4229 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4230 {
4231         struct ieee80211_hw *hw = dev_id;
4232         struct mwl8k_priv *priv = hw->priv;
4233         u32 status;
4234
4235         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4236         if (!status)
4237                 return IRQ_NONE;
4238
4239         if (status & MWL8K_A2H_INT_TX_DONE) {
4240                 status &= ~MWL8K_A2H_INT_TX_DONE;
4241                 tasklet_schedule(&priv->poll_tx_task);
4242         }
4243
4244         if (status & MWL8K_A2H_INT_RX_READY) {
4245                 status &= ~MWL8K_A2H_INT_RX_READY;
4246                 tasklet_schedule(&priv->poll_rx_task);
4247         }
4248
4249         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4250                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4251                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4252         }
4253
4254         if (status)
4255                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4256
4257         if (status & MWL8K_A2H_INT_OPC_DONE) {
4258                 if (priv->hostcmd_wait != NULL)
4259                         complete(priv->hostcmd_wait);
4260         }
4261
4262         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4263                 if (!mutex_is_locked(&priv->fw_mutex) &&
4264                     priv->radio_on && priv->pending_tx_pkts)
4265                         mwl8k_tx_start(priv);
4266         }
4267
4268         return IRQ_HANDLED;
4269 }
4270
4271 static void mwl8k_tx_poll(unsigned long data)
4272 {
4273         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4274         struct mwl8k_priv *priv = hw->priv;
4275         int limit;
4276         int i;
4277
4278         limit = 32;
4279
4280         spin_lock_bh(&priv->tx_lock);
4281
4282         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4283                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4284
4285         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4286                 complete(priv->tx_wait);
4287                 priv->tx_wait = NULL;
4288         }
4289
4290         spin_unlock_bh(&priv->tx_lock);
4291
4292         if (limit) {
4293                 writel(~MWL8K_A2H_INT_TX_DONE,
4294                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4295         } else {
4296                 tasklet_schedule(&priv->poll_tx_task);
4297         }
4298 }
4299
4300 static void mwl8k_rx_poll(unsigned long data)
4301 {
4302         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4303         struct mwl8k_priv *priv = hw->priv;
4304         int limit;
4305
4306         limit = 32;
4307         limit -= rxq_process(hw, 0, limit);
4308         limit -= rxq_refill(hw, 0, limit);
4309
4310         if (limit) {
4311                 writel(~MWL8K_A2H_INT_RX_READY,
4312                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4313         } else {
4314                 tasklet_schedule(&priv->poll_rx_task);
4315         }
4316 }
4317
4318
4319 /*
4320  * Core driver operations.
4321  */
4322 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4323 {
4324         struct mwl8k_priv *priv = hw->priv;
4325         int index = skb_get_queue_mapping(skb);
4326
4327         if (!priv->radio_on) {
4328                 wiphy_debug(hw->wiphy,
4329                             "dropped TX frame since radio disabled\n");
4330                 dev_kfree_skb(skb);
4331                 return;
4332         }
4333
4334         mwl8k_txq_xmit(hw, index, skb);
4335 }
4336
4337 static int mwl8k_start(struct ieee80211_hw *hw)
4338 {
4339         struct mwl8k_priv *priv = hw->priv;
4340         int rc;
4341
4342         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4343                          IRQF_SHARED, MWL8K_NAME, hw);
4344         if (rc) {
4345                 priv->irq = -1;
4346                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4347                 return -EIO;
4348         }
4349         priv->irq = priv->pdev->irq;
4350
4351         /* Enable TX reclaim and RX tasklets.  */
4352         tasklet_enable(&priv->poll_tx_task);
4353         tasklet_enable(&priv->poll_rx_task);
4354
4355         /* Enable interrupts */
4356         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4357         iowrite32(MWL8K_A2H_EVENTS,
4358                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4359
4360         rc = mwl8k_fw_lock(hw);
4361         if (!rc) {
4362                 rc = mwl8k_cmd_radio_enable(hw);
4363
4364                 if (!priv->ap_fw) {
4365                         if (!rc)
4366                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4367
4368                         if (!rc)
4369                                 rc = mwl8k_cmd_set_pre_scan(hw);
4370
4371                         if (!rc)
4372                                 rc = mwl8k_cmd_set_post_scan(hw,
4373                                                 "\x00\x00\x00\x00\x00\x00");
4374                 }
4375
4376                 if (!rc)
4377                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4378
4379                 if (!rc)
4380                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4381
4382                 mwl8k_fw_unlock(hw);
4383         }
4384
4385         if (rc) {
4386                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4387                 free_irq(priv->pdev->irq, hw);
4388                 priv->irq = -1;
4389                 tasklet_disable(&priv->poll_tx_task);
4390                 tasklet_disable(&priv->poll_rx_task);
4391         }
4392
4393         return rc;
4394 }
4395
4396 static void mwl8k_stop(struct ieee80211_hw *hw)
4397 {
4398         struct mwl8k_priv *priv = hw->priv;
4399         int i;
4400
4401         mwl8k_cmd_radio_disable(hw);
4402
4403         ieee80211_stop_queues(hw);
4404
4405         /* Disable interrupts */
4406         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4407         if (priv->irq != -1) {
4408                 free_irq(priv->pdev->irq, hw);
4409                 priv->irq = -1;
4410         }
4411
4412         /* Stop finalize join worker */
4413         cancel_work_sync(&priv->finalize_join_worker);
4414         cancel_work_sync(&priv->watchdog_ba_handle);
4415         if (priv->beacon_skb != NULL)
4416                 dev_kfree_skb(priv->beacon_skb);
4417
4418         /* Stop TX reclaim and RX tasklets.  */
4419         tasklet_disable(&priv->poll_tx_task);
4420         tasklet_disable(&priv->poll_rx_task);
4421
4422         /* Return all skbs to mac80211 */
4423         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4424                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4425 }
4426
4427 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4428
4429 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4430                                struct ieee80211_vif *vif)
4431 {
4432         struct mwl8k_priv *priv = hw->priv;
4433         struct mwl8k_vif *mwl8k_vif;
4434         u32 macids_supported;
4435         int macid, rc;
4436         struct mwl8k_device_info *di;
4437
4438         /*
4439          * Reject interface creation if sniffer mode is active, as
4440          * STA operation is mutually exclusive with hardware sniffer
4441          * mode.  (Sniffer mode is only used on STA firmware.)
4442          */
4443         if (priv->sniffer_enabled) {
4444                 wiphy_info(hw->wiphy,
4445                            "unable to create STA interface because sniffer mode is enabled\n");
4446                 return -EINVAL;
4447         }
4448
4449         di = priv->device_info;
4450         switch (vif->type) {
4451         case NL80211_IFTYPE_AP:
4452                 if (!priv->ap_fw && di->fw_image_ap) {
4453                         /* we must load the ap fw to meet this request */
4454                         if (!list_empty(&priv->vif_list))
4455                                 return -EBUSY;
4456                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4457                         if (rc)
4458                                 return rc;
4459                 }
4460                 macids_supported = priv->ap_macids_supported;
4461                 break;
4462         case NL80211_IFTYPE_STATION:
4463                 if (priv->ap_fw && di->fw_image_sta) {
4464                         /* we must load the sta fw to meet this request */
4465                         if (!list_empty(&priv->vif_list))
4466                                 return -EBUSY;
4467                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4468                         if (rc)
4469                                 return rc;
4470                 }
4471                 macids_supported = priv->sta_macids_supported;
4472                 break;
4473         default:
4474                 return -EINVAL;
4475         }
4476
4477         macid = ffs(macids_supported & ~priv->macids_used);
4478         if (!macid--)
4479                 return -EBUSY;
4480
4481         /* Setup driver private area. */
4482         mwl8k_vif = MWL8K_VIF(vif);
4483         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4484         mwl8k_vif->vif = vif;
4485         mwl8k_vif->macid = macid;
4486         mwl8k_vif->seqno = 0;
4487         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4488         mwl8k_vif->is_hw_crypto_enabled = false;
4489
4490         /* Set the mac address.  */
4491         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4492
4493         if (priv->ap_fw)
4494                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4495
4496         priv->macids_used |= 1 << mwl8k_vif->macid;
4497         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4498
4499         return 0;
4500 }
4501
4502 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4503                                    struct ieee80211_vif *vif)
4504 {
4505         struct mwl8k_priv *priv = hw->priv;
4506         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4507
4508         if (priv->ap_fw)
4509                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4510
4511         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4512
4513         priv->macids_used &= ~(1 << mwl8k_vif->macid);
4514         list_del(&mwl8k_vif->list);
4515 }
4516
4517 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4518 {
4519         struct ieee80211_conf *conf = &hw->conf;
4520         struct mwl8k_priv *priv = hw->priv;
4521         int rc;
4522
4523         if (conf->flags & IEEE80211_CONF_IDLE) {
4524                 mwl8k_cmd_radio_disable(hw);
4525                 return 0;
4526         }
4527
4528         rc = mwl8k_fw_lock(hw);
4529         if (rc)
4530                 return rc;
4531
4532         rc = mwl8k_cmd_radio_enable(hw);
4533         if (rc)
4534                 goto out;
4535
4536         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4537         if (rc)
4538                 goto out;
4539
4540         if (conf->power_level > 18)
4541                 conf->power_level = 18;
4542
4543         if (priv->ap_fw) {
4544
4545                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4546                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4547                         if (rc)
4548                                 goto out;
4549                 }
4550
4551                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4552                 if (rc)
4553                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4554                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4555                 if (rc)
4556                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4557
4558         } else {
4559                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4560                 if (rc)
4561                         goto out;
4562                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4563         }
4564
4565 out:
4566         mwl8k_fw_unlock(hw);
4567
4568         return rc;
4569 }
4570
4571 static void
4572 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4573                            struct ieee80211_bss_conf *info, u32 changed)
4574 {
4575         struct mwl8k_priv *priv = hw->priv;
4576         u32 ap_legacy_rates = 0;
4577         u8 ap_mcs_rates[16];
4578         int rc;
4579
4580         if (mwl8k_fw_lock(hw))
4581                 return;
4582
4583         /*
4584          * No need to capture a beacon if we're no longer associated.
4585          */
4586         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4587                 priv->capture_beacon = false;
4588
4589         /*
4590          * Get the AP's legacy and MCS rates.
4591          */
4592         if (vif->bss_conf.assoc) {
4593                 struct ieee80211_sta *ap;
4594
4595                 rcu_read_lock();
4596
4597                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4598                 if (ap == NULL) {
4599                         rcu_read_unlock();
4600                         goto out;
4601                 }
4602
4603                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4604                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4605                 } else {
4606                         ap_legacy_rates =
4607                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4608                 }
4609                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4610
4611                 rcu_read_unlock();
4612         }
4613
4614         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4615                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4616                 if (rc)
4617                         goto out;
4618
4619                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4620                 if (rc)
4621                         goto out;
4622         }
4623
4624         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4625                 rc = mwl8k_set_radio_preamble(hw,
4626                                 vif->bss_conf.use_short_preamble);
4627                 if (rc)
4628                         goto out;
4629         }
4630
4631         if (changed & BSS_CHANGED_ERP_SLOT) {
4632                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4633                 if (rc)
4634                         goto out;
4635         }
4636
4637         if (vif->bss_conf.assoc &&
4638             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4639                         BSS_CHANGED_HT))) {
4640                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4641                 if (rc)
4642                         goto out;
4643         }
4644
4645         if (vif->bss_conf.assoc &&
4646             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4647                 /*
4648                  * Finalize the join.  Tell rx handler to process
4649                  * next beacon from our BSSID.
4650                  */
4651                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4652                 priv->capture_beacon = true;
4653         }
4654
4655 out:
4656         mwl8k_fw_unlock(hw);
4657 }
4658
4659 static void
4660 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4661                           struct ieee80211_bss_conf *info, u32 changed)
4662 {
4663         int rc;
4664
4665         if (mwl8k_fw_lock(hw))
4666                 return;
4667
4668         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4669                 rc = mwl8k_set_radio_preamble(hw,
4670                                 vif->bss_conf.use_short_preamble);
4671                 if (rc)
4672                         goto out;
4673         }
4674
4675         if (changed & BSS_CHANGED_BASIC_RATES) {
4676                 int idx;
4677                 int rate;
4678
4679                 /*
4680                  * Use lowest supported basic rate for multicasts
4681                  * and management frames (such as probe responses --
4682                  * beacons will always go out at 1 Mb/s).
4683                  */
4684                 idx = ffs(vif->bss_conf.basic_rates);
4685                 if (idx)
4686                         idx--;
4687
4688                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4689                         rate = mwl8k_rates_24[idx].hw_value;
4690                 else
4691                         rate = mwl8k_rates_50[idx].hw_value;
4692
4693                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4694         }
4695
4696         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4697                 struct sk_buff *skb;
4698
4699                 skb = ieee80211_beacon_get(hw, vif);
4700                 if (skb != NULL) {
4701                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4702                         kfree_skb(skb);
4703                 }
4704         }
4705
4706         if (changed & BSS_CHANGED_BEACON_ENABLED)
4707                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4708
4709 out:
4710         mwl8k_fw_unlock(hw);
4711 }
4712
4713 static void
4714 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4715                        struct ieee80211_bss_conf *info, u32 changed)
4716 {
4717         struct mwl8k_priv *priv = hw->priv;
4718
4719         if (!priv->ap_fw)
4720                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4721         else
4722                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4723 }
4724
4725 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4726                                    struct netdev_hw_addr_list *mc_list)
4727 {
4728         struct mwl8k_cmd_pkt *cmd;
4729
4730         /*
4731          * Synthesize and return a command packet that programs the
4732          * hardware multicast address filter.  At this point we don't
4733          * know whether FIF_ALLMULTI is being requested, but if it is,
4734          * we'll end up throwing this packet away and creating a new
4735          * one in mwl8k_configure_filter().
4736          */
4737         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4738
4739         return (unsigned long)cmd;
4740 }
4741
4742 static int
4743 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4744                                unsigned int changed_flags,
4745                                unsigned int *total_flags)
4746 {
4747         struct mwl8k_priv *priv = hw->priv;
4748
4749         /*
4750          * Hardware sniffer mode is mutually exclusive with STA
4751          * operation, so refuse to enable sniffer mode if a STA
4752          * interface is active.
4753          */
4754         if (!list_empty(&priv->vif_list)) {
4755                 if (net_ratelimit())
4756                         wiphy_info(hw->wiphy,
4757                                    "not enabling sniffer mode because STA interface is active\n");
4758                 return 0;
4759         }
4760
4761         if (!priv->sniffer_enabled) {
4762                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4763                         return 0;
4764                 priv->sniffer_enabled = true;
4765         }
4766
4767         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4768                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4769                         FIF_OTHER_BSS;
4770
4771         return 1;
4772 }
4773
4774 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4775 {
4776         if (!list_empty(&priv->vif_list))
4777                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4778
4779         return NULL;
4780 }
4781
4782 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4783                                    unsigned int changed_flags,
4784                                    unsigned int *total_flags,
4785                                    u64 multicast)
4786 {
4787         struct mwl8k_priv *priv = hw->priv;
4788         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4789
4790         /*
4791          * AP firmware doesn't allow fine-grained control over
4792          * the receive filter.
4793          */
4794         if (priv->ap_fw) {
4795                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4796                 kfree(cmd);
4797                 return;
4798         }
4799
4800         /*
4801          * Enable hardware sniffer mode if FIF_CONTROL or
4802          * FIF_OTHER_BSS is requested.
4803          */
4804         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4805             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4806                 kfree(cmd);
4807                 return;
4808         }
4809
4810         /* Clear unsupported feature flags */
4811         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4812
4813         if (mwl8k_fw_lock(hw)) {
4814                 kfree(cmd);
4815                 return;
4816         }
4817
4818         if (priv->sniffer_enabled) {
4819                 mwl8k_cmd_enable_sniffer(hw, 0);
4820                 priv->sniffer_enabled = false;
4821         }
4822
4823         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4824                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4825                         /*
4826                          * Disable the BSS filter.
4827                          */
4828                         mwl8k_cmd_set_pre_scan(hw);
4829                 } else {
4830                         struct mwl8k_vif *mwl8k_vif;
4831                         const u8 *bssid;
4832
4833                         /*
4834                          * Enable the BSS filter.
4835                          *
4836                          * If there is an active STA interface, use that
4837                          * interface's BSSID, otherwise use a dummy one
4838                          * (where the OUI part needs to be nonzero for
4839                          * the BSSID to be accepted by POST_SCAN).
4840                          */
4841                         mwl8k_vif = mwl8k_first_vif(priv);
4842                         if (mwl8k_vif != NULL)
4843                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4844                         else
4845                                 bssid = "\x01\x00\x00\x00\x00\x00";
4846
4847                         mwl8k_cmd_set_post_scan(hw, bssid);
4848                 }
4849         }
4850
4851         /*
4852          * If FIF_ALLMULTI is being requested, throw away the command
4853          * packet that ->prepare_multicast() built and replace it with
4854          * a command packet that enables reception of all multicast
4855          * packets.
4856          */
4857         if (*total_flags & FIF_ALLMULTI) {
4858                 kfree(cmd);
4859                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4860         }
4861
4862         if (cmd != NULL) {
4863                 mwl8k_post_cmd(hw, cmd);
4864                 kfree(cmd);
4865         }
4866
4867         mwl8k_fw_unlock(hw);
4868 }
4869
4870 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4871 {
4872         return mwl8k_cmd_set_rts_threshold(hw, value);
4873 }
4874
4875 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4876                             struct ieee80211_vif *vif,
4877                             struct ieee80211_sta *sta)
4878 {
4879         struct mwl8k_priv *priv = hw->priv;
4880
4881         if (priv->ap_fw)
4882                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4883         else
4884                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4885 }
4886
4887 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4888                          struct ieee80211_vif *vif,
4889                          struct ieee80211_sta *sta)
4890 {
4891         struct mwl8k_priv *priv = hw->priv;
4892         int ret;
4893         int i;
4894         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4895         struct ieee80211_key_conf *key;
4896
4897         if (!priv->ap_fw) {
4898                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4899                 if (ret >= 0) {
4900                         MWL8K_STA(sta)->peer_id = ret;
4901                         if (sta->ht_cap.ht_supported)
4902                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
4903                         ret = 0;
4904                 }
4905
4906         } else {
4907                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4908         }
4909
4910         for (i = 0; i < NUM_WEP_KEYS; i++) {
4911                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4912                 if (mwl8k_vif->wep_key_conf[i].enabled)
4913                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4914         }
4915         return ret;
4916 }
4917
4918 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
4919                          struct ieee80211_vif *vif, u16 queue,
4920                          const struct ieee80211_tx_queue_params *params)
4921 {
4922         struct mwl8k_priv *priv = hw->priv;
4923         int rc;
4924
4925         rc = mwl8k_fw_lock(hw);
4926         if (!rc) {
4927                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4928                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4929
4930                 if (!priv->wmm_enabled)
4931                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4932
4933                 if (!rc) {
4934                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4935                         rc = mwl8k_cmd_set_edca_params(hw, q,
4936                                                        params->cw_min,
4937                                                        params->cw_max,
4938                                                        params->aifs,
4939                                                        params->txop);
4940                 }
4941
4942                 mwl8k_fw_unlock(hw);
4943         }
4944
4945         return rc;
4946 }
4947
4948 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4949                            struct ieee80211_low_level_stats *stats)
4950 {
4951         return mwl8k_cmd_get_stat(hw, stats);
4952 }
4953
4954 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4955                                 struct survey_info *survey)
4956 {
4957         struct mwl8k_priv *priv = hw->priv;
4958         struct ieee80211_conf *conf = &hw->conf;
4959
4960         if (idx != 0)
4961                 return -ENOENT;
4962
4963         survey->channel = conf->channel;
4964         survey->filled = SURVEY_INFO_NOISE_DBM;
4965         survey->noise = priv->noise;
4966
4967         return 0;
4968 }
4969
4970 #define MAX_AMPDU_ATTEMPTS 5
4971
4972 static int
4973 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4974                    enum ieee80211_ampdu_mlme_action action,
4975                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4976                    u8 buf_size)
4977 {
4978
4979         int i, rc = 0;
4980         struct mwl8k_priv *priv = hw->priv;
4981         struct mwl8k_ampdu_stream *stream;
4982         u8 *addr = sta->addr;
4983
4984         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4985                 return -ENOTSUPP;
4986
4987         spin_lock(&priv->stream_lock);
4988         stream = mwl8k_lookup_stream(hw, addr, tid);
4989
4990         switch (action) {
4991         case IEEE80211_AMPDU_RX_START:
4992         case IEEE80211_AMPDU_RX_STOP:
4993                 break;
4994         case IEEE80211_AMPDU_TX_START:
4995                 /* By the time we get here the hw queues may contain outgoing
4996                  * packets for this RA/TID that are not part of this BA
4997                  * session.  The hw will assign sequence numbers to these
4998                  * packets as they go out.  So if we query the hw for its next
4999                  * sequence number and use that for the SSN here, it may end up
5000                  * being wrong, which will lead to sequence number mismatch at
5001                  * the recipient.  To avoid this, we reset the sequence number
5002                  * to O for the first MPDU in this BA stream.
5003                  */
5004                 *ssn = 0;
5005                 if (stream == NULL) {
5006                         /* This means that somebody outside this driver called
5007                          * ieee80211_start_tx_ba_session.  This is unexpected
5008                          * because we do our own rate control.  Just warn and
5009                          * move on.
5010                          */
5011                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5012                                    "Proceeding anyway.\n", __func__);
5013                         stream = mwl8k_add_stream(hw, sta, tid);
5014                 }
5015                 if (stream == NULL) {
5016                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5017                         rc = -EBUSY;
5018                         break;
5019                 }
5020                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5021
5022                 /* Release the lock before we do the time consuming stuff */
5023                 spin_unlock(&priv->stream_lock);
5024                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5025                         rc = mwl8k_check_ba(hw, stream);
5026
5027                         if (!rc)
5028                                 break;
5029                         /*
5030                          * HW queues take time to be flushed, give them
5031                          * sufficient time
5032                          */
5033
5034                         msleep(1000);
5035                 }
5036                 spin_lock(&priv->stream_lock);
5037                 if (rc) {
5038                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5039                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5040                         mwl8k_remove_stream(hw, stream);
5041                         rc = -EBUSY;
5042                         break;
5043                 }
5044                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5045                 break;
5046         case IEEE80211_AMPDU_TX_STOP:
5047                 if (stream == NULL)
5048                         break;
5049                 if (stream->state == AMPDU_STREAM_ACTIVE) {
5050                         spin_unlock(&priv->stream_lock);
5051                         mwl8k_destroy_ba(hw, stream);
5052                         spin_lock(&priv->stream_lock);
5053                 }
5054                 mwl8k_remove_stream(hw, stream);
5055                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5056                 break;
5057         case IEEE80211_AMPDU_TX_OPERATIONAL:
5058                 BUG_ON(stream == NULL);
5059                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5060                 spin_unlock(&priv->stream_lock);
5061                 rc = mwl8k_create_ba(hw, stream, buf_size);
5062                 spin_lock(&priv->stream_lock);
5063                 if (!rc)
5064                         stream->state = AMPDU_STREAM_ACTIVE;
5065                 else {
5066                         spin_unlock(&priv->stream_lock);
5067                         mwl8k_destroy_ba(hw, stream);
5068                         spin_lock(&priv->stream_lock);
5069                         wiphy_debug(hw->wiphy,
5070                                 "Failed adding stream for sta %pM tid %d\n",
5071                                 addr, tid);
5072                         mwl8k_remove_stream(hw, stream);
5073                 }
5074                 break;
5075
5076         default:
5077                 rc = -ENOTSUPP;
5078         }
5079
5080         spin_unlock(&priv->stream_lock);
5081         return rc;
5082 }
5083
5084 static const struct ieee80211_ops mwl8k_ops = {
5085         .tx                     = mwl8k_tx,
5086         .start                  = mwl8k_start,
5087         .stop                   = mwl8k_stop,
5088         .add_interface          = mwl8k_add_interface,
5089         .remove_interface       = mwl8k_remove_interface,
5090         .config                 = mwl8k_config,
5091         .bss_info_changed       = mwl8k_bss_info_changed,
5092         .prepare_multicast      = mwl8k_prepare_multicast,
5093         .configure_filter       = mwl8k_configure_filter,
5094         .set_key                = mwl8k_set_key,
5095         .set_rts_threshold      = mwl8k_set_rts_threshold,
5096         .sta_add                = mwl8k_sta_add,
5097         .sta_remove             = mwl8k_sta_remove,
5098         .conf_tx                = mwl8k_conf_tx,
5099         .get_stats              = mwl8k_get_stats,
5100         .get_survey             = mwl8k_get_survey,
5101         .ampdu_action           = mwl8k_ampdu_action,
5102 };
5103
5104 static void mwl8k_finalize_join_worker(struct work_struct *work)
5105 {
5106         struct mwl8k_priv *priv =
5107                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5108         struct sk_buff *skb = priv->beacon_skb;
5109         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5110         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5111         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5112                                          mgmt->u.beacon.variable, len);
5113         int dtim_period = 1;
5114
5115         if (tim && tim[1] >= 2)
5116                 dtim_period = tim[3];
5117
5118         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5119
5120         dev_kfree_skb(skb);
5121         priv->beacon_skb = NULL;
5122 }
5123
5124 enum {
5125         MWL8363 = 0,
5126         MWL8687,
5127         MWL8366,
5128 };
5129
5130 #define MWL8K_8366_AP_FW_API 2
5131 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5132 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5133
5134 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5135         [MWL8363] = {
5136                 .part_name      = "88w8363",
5137                 .helper_image   = "mwl8k/helper_8363.fw",
5138                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5139         },
5140         [MWL8687] = {
5141                 .part_name      = "88w8687",
5142                 .helper_image   = "mwl8k/helper_8687.fw",
5143                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5144         },
5145         [MWL8366] = {
5146                 .part_name      = "88w8366",
5147                 .helper_image   = "mwl8k/helper_8366.fw",
5148                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5149                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5150                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5151                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5152         },
5153 };
5154
5155 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5156 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5157 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5158 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5159 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5160 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5161 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5162
5163 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5164         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5165         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5166         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5167         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5168         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5169         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5170         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5171         { },
5172 };
5173 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5174
5175 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5176 {
5177         int rc;
5178         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5179                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5180                priv->fw_pref, priv->fw_alt);
5181         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5182         if (rc) {
5183                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5184                        pci_name(priv->pdev), priv->fw_alt);
5185                 return rc;
5186         }
5187         return 0;
5188 }
5189
5190 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5191 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5192 {
5193         struct mwl8k_priv *priv = context;
5194         struct mwl8k_device_info *di = priv->device_info;
5195         int rc;
5196
5197         switch (priv->fw_state) {
5198         case FW_STATE_INIT:
5199                 if (!fw) {
5200                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5201                                pci_name(priv->pdev), di->helper_image);
5202                         goto fail;
5203                 }
5204                 priv->fw_helper = fw;
5205                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5206                                       true);
5207                 if (rc && priv->fw_alt) {
5208                         rc = mwl8k_request_alt_fw(priv);
5209                         if (rc)
5210                                 goto fail;
5211                         priv->fw_state = FW_STATE_LOADING_ALT;
5212                 } else if (rc)
5213                         goto fail;
5214                 else
5215                         priv->fw_state = FW_STATE_LOADING_PREF;
5216                 break;
5217
5218         case FW_STATE_LOADING_PREF:
5219                 if (!fw) {
5220                         if (priv->fw_alt) {
5221                                 rc = mwl8k_request_alt_fw(priv);
5222                                 if (rc)
5223                                         goto fail;
5224                                 priv->fw_state = FW_STATE_LOADING_ALT;
5225                         } else
5226                                 goto fail;
5227                 } else {
5228                         priv->fw_ucode = fw;
5229                         rc = mwl8k_firmware_load_success(priv);
5230                         if (rc)
5231                                 goto fail;
5232                         else
5233                                 complete(&priv->firmware_loading_complete);
5234                 }
5235                 break;
5236
5237         case FW_STATE_LOADING_ALT:
5238                 if (!fw) {
5239                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5240                                pci_name(priv->pdev), di->helper_image);
5241                         goto fail;
5242                 }
5243                 priv->fw_ucode = fw;
5244                 rc = mwl8k_firmware_load_success(priv);
5245                 if (rc)
5246                         goto fail;
5247                 else
5248                         complete(&priv->firmware_loading_complete);
5249                 break;
5250
5251         default:
5252                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5253                        MWL8K_NAME, priv->fw_state);
5254                 BUG_ON(1);
5255         }
5256
5257         return;
5258
5259 fail:
5260         priv->fw_state = FW_STATE_ERROR;
5261         complete(&priv->firmware_loading_complete);
5262         device_release_driver(&priv->pdev->dev);
5263         mwl8k_release_firmware(priv);
5264 }
5265
5266 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5267                                bool nowait)
5268 {
5269         struct mwl8k_priv *priv = hw->priv;
5270         int rc;
5271
5272         /* Reset firmware and hardware */
5273         mwl8k_hw_reset(priv);
5274
5275         /* Ask userland hotplug daemon for the device firmware */
5276         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5277         if (rc) {
5278                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5279                 return rc;
5280         }
5281
5282         if (nowait)
5283                 return rc;
5284
5285         /* Load firmware into hardware */
5286         rc = mwl8k_load_firmware(hw);
5287         if (rc)
5288                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5289
5290         /* Reclaim memory once firmware is successfully loaded */
5291         mwl8k_release_firmware(priv);
5292
5293         return rc;
5294 }
5295
5296 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5297 {
5298         struct mwl8k_priv *priv = hw->priv;
5299         int rc = 0;
5300         int i;
5301
5302         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5303                 rc = mwl8k_txq_init(hw, i);
5304                 if (rc)
5305                         break;
5306                 if (priv->ap_fw)
5307                         iowrite32(priv->txq[i].txd_dma,
5308                                   priv->sram + priv->txq_offset[i]);
5309         }
5310         return rc;
5311 }
5312
5313 /* initialize hw after successfully loading a firmware image */
5314 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5315 {
5316         struct mwl8k_priv *priv = hw->priv;
5317         int rc = 0;
5318         int i;
5319
5320         if (priv->ap_fw) {
5321                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5322                 if (priv->rxd_ops == NULL) {
5323                         wiphy_err(hw->wiphy,
5324                                   "Driver does not have AP firmware image support for this hardware\n");
5325                         goto err_stop_firmware;
5326                 }
5327         } else {
5328                 priv->rxd_ops = &rxd_sta_ops;
5329         }
5330
5331         priv->sniffer_enabled = false;
5332         priv->wmm_enabled = false;
5333         priv->pending_tx_pkts = 0;
5334
5335         rc = mwl8k_rxq_init(hw, 0);
5336         if (rc)
5337                 goto err_stop_firmware;
5338         rxq_refill(hw, 0, INT_MAX);
5339
5340         /* For the sta firmware, we need to know the dma addresses of tx queues
5341          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5342          * prior to issuing this command.  But for the AP case, we learn the
5343          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5344          * case we must initialize the tx queues after.
5345          */
5346         priv->num_ampdu_queues = 0;
5347         if (!priv->ap_fw) {
5348                 rc = mwl8k_init_txqs(hw);
5349                 if (rc)
5350                         goto err_free_queues;
5351         }
5352
5353         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5354         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5355         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5356                   MWL8K_A2H_INT_BA_WATCHDOG,
5357                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5358         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5359                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5360
5361         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5362                          IRQF_SHARED, MWL8K_NAME, hw);
5363         if (rc) {
5364                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5365                 goto err_free_queues;
5366         }
5367
5368         memset(priv->ampdu, 0, sizeof(priv->ampdu));
5369
5370         /*
5371          * Temporarily enable interrupts.  Initial firmware host
5372          * commands use interrupts and avoid polling.  Disable
5373          * interrupts when done.
5374          */
5375         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5376
5377         /* Get config data, mac addrs etc */
5378         if (priv->ap_fw) {
5379                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5380                 if (!rc)
5381                         rc = mwl8k_init_txqs(hw);
5382                 if (!rc)
5383                         rc = mwl8k_cmd_set_hw_spec(hw);
5384         } else {
5385                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5386         }
5387         if (rc) {
5388                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5389                 goto err_free_irq;
5390         }
5391
5392         /* Turn radio off */
5393         rc = mwl8k_cmd_radio_disable(hw);
5394         if (rc) {
5395                 wiphy_err(hw->wiphy, "Cannot disable\n");
5396                 goto err_free_irq;
5397         }
5398
5399         /* Clear MAC address */
5400         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5401         if (rc) {
5402                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5403                 goto err_free_irq;
5404         }
5405
5406         /* Disable interrupts */
5407         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5408         free_irq(priv->pdev->irq, hw);
5409
5410         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5411                    priv->device_info->part_name,
5412                    priv->hw_rev, hw->wiphy->perm_addr,
5413                    priv->ap_fw ? "AP" : "STA",
5414                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5415                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5416
5417         return 0;
5418
5419 err_free_irq:
5420         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5421         free_irq(priv->pdev->irq, hw);
5422
5423 err_free_queues:
5424         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5425                 mwl8k_txq_deinit(hw, i);
5426         mwl8k_rxq_deinit(hw, 0);
5427
5428 err_stop_firmware:
5429         mwl8k_hw_reset(priv);
5430
5431         return rc;
5432 }
5433
5434 /*
5435  * invoke mwl8k_reload_firmware to change the firmware image after the device
5436  * has already been registered
5437  */
5438 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5439 {
5440         int i, rc = 0;
5441         struct mwl8k_priv *priv = hw->priv;
5442
5443         mwl8k_stop(hw);
5444         mwl8k_rxq_deinit(hw, 0);
5445
5446         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5447                 mwl8k_txq_deinit(hw, i);
5448
5449         rc = mwl8k_init_firmware(hw, fw_image, false);
5450         if (rc)
5451                 goto fail;
5452
5453         rc = mwl8k_probe_hw(hw);
5454         if (rc)
5455                 goto fail;
5456
5457         rc = mwl8k_start(hw);
5458         if (rc)
5459                 goto fail;
5460
5461         rc = mwl8k_config(hw, ~0);
5462         if (rc)
5463                 goto fail;
5464
5465         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5466                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5467                 if (rc)
5468                         goto fail;
5469         }
5470
5471         return rc;
5472
5473 fail:
5474         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5475         return rc;
5476 }
5477
5478 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5479 {
5480         struct ieee80211_hw *hw = priv->hw;
5481         int i, rc;
5482
5483         rc = mwl8k_load_firmware(hw);
5484         mwl8k_release_firmware(priv);
5485         if (rc) {
5486                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5487                 return rc;
5488         }
5489
5490         /*
5491          * Extra headroom is the size of the required DMA header
5492          * minus the size of the smallest 802.11 frame (CTS frame).
5493          */
5494         hw->extra_tx_headroom =
5495                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5496
5497         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5498
5499         hw->channel_change_time = 10;
5500
5501         hw->queues = MWL8K_TX_WMM_QUEUES;
5502
5503         /* Set rssi values to dBm */
5504         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5505
5506         /*
5507          * Ask mac80211 to not to trigger PS mode
5508          * based on PM bit of incoming frames.
5509          */
5510         if (priv->ap_fw)
5511                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5512
5513         hw->vif_data_size = sizeof(struct mwl8k_vif);
5514         hw->sta_data_size = sizeof(struct mwl8k_sta);
5515
5516         priv->macids_used = 0;
5517         INIT_LIST_HEAD(&priv->vif_list);
5518
5519         /* Set default radio state and preamble */
5520         priv->radio_on = false;
5521         priv->radio_short_preamble = false;
5522
5523         /* Finalize join worker */
5524         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5525         /* Handle watchdog ba events */
5526         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5527
5528         /* TX reclaim and RX tasklets.  */
5529         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5530         tasklet_disable(&priv->poll_tx_task);
5531         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5532         tasklet_disable(&priv->poll_rx_task);
5533
5534         /* Power management cookie */
5535         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5536         if (priv->cookie == NULL)
5537                 return -ENOMEM;
5538
5539         mutex_init(&priv->fw_mutex);
5540         priv->fw_mutex_owner = NULL;
5541         priv->fw_mutex_depth = 0;
5542         priv->hostcmd_wait = NULL;
5543
5544         spin_lock_init(&priv->tx_lock);
5545
5546         spin_lock_init(&priv->stream_lock);
5547
5548         priv->tx_wait = NULL;
5549
5550         rc = mwl8k_probe_hw(hw);
5551         if (rc)
5552                 goto err_free_cookie;
5553
5554         hw->wiphy->interface_modes = 0;
5555         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5556                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5557         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5558                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5559
5560         rc = ieee80211_register_hw(hw);
5561         if (rc) {
5562                 wiphy_err(hw->wiphy, "Cannot register device\n");
5563                 goto err_unprobe_hw;
5564         }
5565
5566         return 0;
5567
5568 err_unprobe_hw:
5569         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5570                 mwl8k_txq_deinit(hw, i);
5571         mwl8k_rxq_deinit(hw, 0);
5572
5573 err_free_cookie:
5574         if (priv->cookie != NULL)
5575                 pci_free_consistent(priv->pdev, 4,
5576                                 priv->cookie, priv->cookie_dma);
5577
5578         return rc;
5579 }
5580 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5581                                  const struct pci_device_id *id)
5582 {
5583         static int printed_version;
5584         struct ieee80211_hw *hw;
5585         struct mwl8k_priv *priv;
5586         struct mwl8k_device_info *di;
5587         int rc;
5588
5589         if (!printed_version) {
5590                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5591                 printed_version = 1;
5592         }
5593
5594
5595         rc = pci_enable_device(pdev);
5596         if (rc) {
5597                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5598                        MWL8K_NAME);
5599                 return rc;
5600         }
5601
5602         rc = pci_request_regions(pdev, MWL8K_NAME);
5603         if (rc) {
5604                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5605                        MWL8K_NAME);
5606                 goto err_disable_device;
5607         }
5608
5609         pci_set_master(pdev);
5610
5611
5612         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5613         if (hw == NULL) {
5614                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5615                 rc = -ENOMEM;
5616                 goto err_free_reg;
5617         }
5618
5619         SET_IEEE80211_DEV(hw, &pdev->dev);
5620         pci_set_drvdata(pdev, hw);
5621
5622         priv = hw->priv;
5623         priv->hw = hw;
5624         priv->pdev = pdev;
5625         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5626
5627
5628         priv->sram = pci_iomap(pdev, 0, 0x10000);
5629         if (priv->sram == NULL) {
5630                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5631                 goto err_iounmap;
5632         }
5633
5634         /*
5635          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5636          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5637          */
5638         priv->regs = pci_iomap(pdev, 1, 0x10000);
5639         if (priv->regs == NULL) {
5640                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5641                 if (priv->regs == NULL) {
5642                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5643                         goto err_iounmap;
5644                 }
5645         }
5646
5647         /*
5648          * Choose the initial fw image depending on user input.  If a second
5649          * image is available, make it the alternative image that will be
5650          * loaded if the first one fails.
5651          */
5652         init_completion(&priv->firmware_loading_complete);
5653         di = priv->device_info;
5654         if (ap_mode_default && di->fw_image_ap) {
5655                 priv->fw_pref = di->fw_image_ap;
5656                 priv->fw_alt = di->fw_image_sta;
5657         } else if (!ap_mode_default && di->fw_image_sta) {
5658                 priv->fw_pref = di->fw_image_sta;
5659                 priv->fw_alt = di->fw_image_ap;
5660         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5661                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5662                 priv->fw_pref = di->fw_image_sta;
5663         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5664                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5665                 priv->fw_pref = di->fw_image_ap;
5666         }
5667         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5668         if (rc)
5669                 goto err_stop_firmware;
5670         return rc;
5671
5672 err_stop_firmware:
5673         mwl8k_hw_reset(priv);
5674
5675 err_iounmap:
5676         if (priv->regs != NULL)
5677                 pci_iounmap(pdev, priv->regs);
5678
5679         if (priv->sram != NULL)
5680                 pci_iounmap(pdev, priv->sram);
5681
5682         pci_set_drvdata(pdev, NULL);
5683         ieee80211_free_hw(hw);
5684
5685 err_free_reg:
5686         pci_release_regions(pdev);
5687
5688 err_disable_device:
5689         pci_disable_device(pdev);
5690
5691         return rc;
5692 }
5693
5694 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5695 {
5696         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5697 }
5698
5699 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5700 {
5701         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5702         struct mwl8k_priv *priv;
5703         int i;
5704
5705         if (hw == NULL)
5706                 return;
5707         priv = hw->priv;
5708
5709         wait_for_completion(&priv->firmware_loading_complete);
5710
5711         if (priv->fw_state == FW_STATE_ERROR) {
5712                 mwl8k_hw_reset(priv);
5713                 goto unmap;
5714         }
5715
5716         ieee80211_stop_queues(hw);
5717
5718         ieee80211_unregister_hw(hw);
5719
5720         /* Remove TX reclaim and RX tasklets.  */
5721         tasklet_kill(&priv->poll_tx_task);
5722         tasklet_kill(&priv->poll_rx_task);
5723
5724         /* Stop hardware */
5725         mwl8k_hw_reset(priv);
5726
5727         /* Return all skbs to mac80211 */
5728         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5729                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5730
5731         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5732                 mwl8k_txq_deinit(hw, i);
5733
5734         mwl8k_rxq_deinit(hw, 0);
5735
5736         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5737
5738 unmap:
5739         pci_iounmap(pdev, priv->regs);
5740         pci_iounmap(pdev, priv->sram);
5741         pci_set_drvdata(pdev, NULL);
5742         ieee80211_free_hw(hw);
5743         pci_release_regions(pdev);
5744         pci_disable_device(pdev);
5745 }
5746
5747 static struct pci_driver mwl8k_driver = {
5748         .name           = MWL8K_NAME,
5749         .id_table       = mwl8k_pci_id_table,
5750         .probe          = mwl8k_probe,
5751         .remove         = __devexit_p(mwl8k_remove),
5752         .shutdown       = __devexit_p(mwl8k_shutdown),
5753 };
5754
5755 static int __init mwl8k_init(void)
5756 {
5757         return pci_register_driver(&mwl8k_driver);
5758 }
5759
5760 static void __exit mwl8k_exit(void)
5761 {
5762         pci_unregister_driver(&mwl8k_driver);
5763 }
5764
5765 module_init(mwl8k_init);
5766 module_exit(mwl8k_exit);
5767
5768 MODULE_DESCRIPTION(MWL8K_DESC);
5769 MODULE_VERSION(MWL8K_VERSION);
5770 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5771 MODULE_LICENSE("GPL");