Pileus Git - ~andy/linux/blob - drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/list.h>
  19 #include <linux/pci.h>
  20 #include <linux/delay.h>
  21 #include <linux/completion.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/slab.h>
  24 #include <net/mac80211.h>
  25 #include <linux/moduleparam.h>
  26 #include <linux/firmware.h>
  27 #include <linux/workqueue.h>
  28
  29 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  30 #define MWL8K_NAME      KBUILD_MODNAME
  31 #define MWL8K_VERSION   "0.13"
  32
  33 /* Module parameters */
  34 static bool ap_mode_default;
  35 module_param(ap_mode_default, bool, 0);
  36 MODULE_PARM_DESC(ap_mode_default,
  37                  "Set to 1 to make ap mode the default instead of sta mode");
  38
  39 /* Register definitions */
  40 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  41 #define  MWL8K_MODE_STA                          0x0000005a
  42 #define  MWL8K_MODE_AP                           0x000000a5
  43 #define MWL8K_HIU_INT_CODE                      0x00000c14
  44 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  45 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  46 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  47 #define MWL8K_HIU_SCRATCH                       0x00000c40
  48
  49 /* Host->device communications */
  50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  52 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  55 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  56 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  57 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  58 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  59
  60 /* Device->host communications */
  61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  63 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  66 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  67 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  68 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  69 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  70 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  71 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  72 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  73 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  74 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  75 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  76 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  77
  78 /* HW micro second timer register
  79  * located at offset 0xA600. This
  80  * will be used to timestamp tx
  81  * packets.
  82  */
  83
  84 #define MWL8K_HW_TIMER_REGISTER                 0x0000a600
  85
  86 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  87                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  88                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  89                                  MWL8K_A2H_INT_RADAR_DETECT | \
  90                                  MWL8K_A2H_INT_RADIO_ON | \
  91                                  MWL8K_A2H_INT_RADIO_OFF | \
  92                                  MWL8K_A2H_INT_MAC_EVENT | \
  93                                  MWL8K_A2H_INT_OPC_DONE | \
  94                                  MWL8K_A2H_INT_RX_READY | \
  95                                  MWL8K_A2H_INT_TX_DONE | \
  96                                  MWL8K_A2H_INT_BA_WATCHDOG)
  97
  98 #define MWL8K_RX_QUEUES         1
  99 #define MWL8K_TX_WMM_QUEUES     4
 100 #define MWL8K_MAX_AMPDU_QUEUES  8
 101 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
 102 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
 103
 104 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         struct task_struct *hw_restart_owner;
 202         int fw_mutex_depth;
 203         struct completion *hostcmd_wait;
 204
 205         /* lock held over TX and TX reap */
 206         spinlock_t tx_lock;
 207
 208         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 209         struct completion *tx_wait;
 210
 211         /* List of interfaces.  */
 212         u32 macids_used;
 213         struct list_head vif_list;
 214
 215         /* power management status cookie from firmware */
 216         u32 *cookie;
 217         dma_addr_t cookie_dma;
 218
 219         u16 num_mcaddrs;
 220         u8 hw_rev;
 221         u32 fw_rev;
 222
 223         /*
 224          * Running count of TX packets in flight, to avoid
 225          * iterating over the transmit rings each time.
 226          */
 227         int pending_tx_pkts;
 228
 229         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 230         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 231         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 232
 233         bool radio_on;
 234         bool radio_short_preamble;
 235         bool sniffer_enabled;
 236         bool wmm_enabled;
 237
 238         /* XXX need to convert this to handle multiple interfaces */
 239         bool capture_beacon;
 240         u8 capture_bssid[ETH_ALEN];
 241         struct sk_buff *beacon_skb;
 242
 243         /*
 244          * This FJ worker has to be global as it is scheduled from the
 245          * RX handler.  At this point we don't know which interface it
 246          * belongs to until the list of bssids waiting to complete join
 247          * is checked.
 248          */
 249         struct work_struct finalize_join_worker;
 250
 251         /* Tasklet to perform TX reclaim.  */
 252         struct tasklet_struct poll_tx_task;
 253
 254         /* Tasklet to perform RX.  */
 255         struct tasklet_struct poll_rx_task;
 256
 257         /* Most recently reported noise in dBm */
 258         s8 noise;
 259
 260         /*
 261          * preserve the queue configurations so they can be restored if/when
 262          * the firmware image is swapped.
 263          */
 264         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 265
 266         /* To perform the task of reloading the firmware */
 267         struct work_struct fw_reload;
 268         bool hw_restart_in_progress;
 269
 270         /* async firmware loading state */
 271         unsigned fw_state;
 272         char *fw_pref;
 273         char *fw_alt;
 274         struct completion firmware_loading_complete;
 275 };
 276
 277 #define MAX_WEP_KEY_LEN         13
 278 #define NUM_WEP_KEYS            4
 279
 280 /* Per interface specific private data */
 281 struct mwl8k_vif {
 282         struct list_head list;
 283         struct ieee80211_vif *vif;
 284
 285         /* Firmware macid for this vif.  */
 286         int macid;
 287
 288         /* Non AMPDU sequence number assigned by driver.  */
 289         u16 seqno;
 290
 291         /* Saved WEP keys */
 292         struct {
 293                 u8 enabled;
 294                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 295         } wep_key_conf[NUM_WEP_KEYS];
 296
 297         /* BSSID */
 298         u8 bssid[ETH_ALEN];
 299
 300         /* A flag to indicate is HW crypto is enabled for this bssid */
 301         bool is_hw_crypto_enabled;
 302 };
 303 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 304 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 305
 306 struct tx_traffic_info {
 307         u32 start_time;
 308         u32 pkts;
 309 };
 310
 311 #define MWL8K_MAX_TID 8
 312 struct mwl8k_sta {
 313         /* Index into station database. Returned by UPDATE_STADB.  */
 314         u8 peer_id;
 315         u8 is_ampdu_allowed;
 316         struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
 317 };
 318 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 319
 320 static const struct ieee80211_channel mwl8k_channels_24[] = {
 321         { .center_freq = 2412, .hw_value = 1, },
 322         { .center_freq = 2417, .hw_value = 2, },
 323         { .center_freq = 2422, .hw_value = 3, },
 324         { .center_freq = 2427, .hw_value = 4, },
 325         { .center_freq = 2432, .hw_value = 5, },
 326         { .center_freq = 2437, .hw_value = 6, },
 327         { .center_freq = 2442, .hw_value = 7, },
 328         { .center_freq = 2447, .hw_value = 8, },
 329         { .center_freq = 2452, .hw_value = 9, },
 330         { .center_freq = 2457, .hw_value = 10, },
 331         { .center_freq = 2462, .hw_value = 11, },
 332         { .center_freq = 2467, .hw_value = 12, },
 333         { .center_freq = 2472, .hw_value = 13, },
 334         { .center_freq = 2484, .hw_value = 14, },
 335 };
 336
 337 static const struct ieee80211_rate mwl8k_rates_24[] = {
 338         { .bitrate = 10, .hw_value = 2, },
 339         { .bitrate = 20, .hw_value = 4, },
 340         { .bitrate = 55, .hw_value = 11, },
 341         { .bitrate = 110, .hw_value = 22, },
 342         { .bitrate = 220, .hw_value = 44, },
 343         { .bitrate = 60, .hw_value = 12, },
 344         { .bitrate = 90, .hw_value = 18, },
 345         { .bitrate = 120, .hw_value = 24, },
 346         { .bitrate = 180, .hw_value = 36, },
 347         { .bitrate = 240, .hw_value = 48, },
 348         { .bitrate = 360, .hw_value = 72, },
 349         { .bitrate = 480, .hw_value = 96, },
 350         { .bitrate = 540, .hw_value = 108, },
 351         { .bitrate = 720, .hw_value = 144, },
 352 };
 353
 354 static const struct ieee80211_channel mwl8k_channels_50[] = {
 355         { .center_freq = 5180, .hw_value = 36, },
 356         { .center_freq = 5200, .hw_value = 40, },
 357         { .center_freq = 5220, .hw_value = 44, },
 358         { .center_freq = 5240, .hw_value = 48, },
 359 };
 360
 361 static const struct ieee80211_rate mwl8k_rates_50[] = {
 362         { .bitrate = 60, .hw_value = 12, },
 363         { .bitrate = 90, .hw_value = 18, },
 364         { .bitrate = 120, .hw_value = 24, },
 365         { .bitrate = 180, .hw_value = 36, },
 366         { .bitrate = 240, .hw_value = 48, },
 367         { .bitrate = 360, .hw_value = 72, },
 368         { .bitrate = 480, .hw_value = 96, },
 369         { .bitrate = 540, .hw_value = 108, },
 370         { .bitrate = 720, .hw_value = 144, },
 371 };
 372
 373 /* Set or get info from Firmware */
 374 #define MWL8K_CMD_GET                   0x0000
 375 #define MWL8K_CMD_SET                   0x0001
 376 #define MWL8K_CMD_SET_LIST              0x0002
 377
 378 /* Firmware command codes */
 379 #define MWL8K_CMD_CODE_DNLD             0x0001
 380 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 381 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 382 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 383 #define MWL8K_CMD_GET_STAT              0x0014
 384 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 385 #define MWL8K_CMD_RF_TX_POWER           0x001e
 386 #define MWL8K_CMD_TX_POWER              0x001f
 387 #define MWL8K_CMD_RF_ANTENNA            0x0020
 388 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 389 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 390 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 391 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 392 #define MWL8K_CMD_SET_AID               0x010d
 393 #define MWL8K_CMD_SET_RATE              0x0110
 394 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 395 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 396 #define MWL8K_CMD_SET_SLOT              0x0114
 397 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 398 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 399 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 400 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 401 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 402 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 403 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 404 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 405 #define MWL8K_CMD_DEL_MAC_ADDR          0x0206          /* per-vif */
 406 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 407 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 408 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 409 #define MWL8K_CMD_UPDATE_STADB          0x1123
 410 #define MWL8K_CMD_BASTREAM              0x1125
 411
 412 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 413 {
 414         u16 command = le16_to_cpu(cmd);
 415
 416 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 417                                         snprintf(buf, bufsize, "%s", #x);\
 418                                         return buf;\
 419                                         } while (0)
 420         switch (command & ~0x8000) {
 421                 MWL8K_CMDNAME(CODE_DNLD);
 422                 MWL8K_CMDNAME(GET_HW_SPEC);
 423                 MWL8K_CMDNAME(SET_HW_SPEC);
 424                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 425                 MWL8K_CMDNAME(GET_STAT);
 426                 MWL8K_CMDNAME(RADIO_CONTROL);
 427                 MWL8K_CMDNAME(RF_TX_POWER);
 428                 MWL8K_CMDNAME(TX_POWER);
 429                 MWL8K_CMDNAME(RF_ANTENNA);
 430                 MWL8K_CMDNAME(SET_BEACON);
 431                 MWL8K_CMDNAME(SET_PRE_SCAN);
 432                 MWL8K_CMDNAME(SET_POST_SCAN);
 433                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 434                 MWL8K_CMDNAME(SET_AID);
 435                 MWL8K_CMDNAME(SET_RATE);
 436                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 437                 MWL8K_CMDNAME(RTS_THRESHOLD);
 438                 MWL8K_CMDNAME(SET_SLOT);
 439                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 440                 MWL8K_CMDNAME(SET_WMM_MODE);
 441                 MWL8K_CMDNAME(MIMO_CONFIG);
 442                 MWL8K_CMDNAME(USE_FIXED_RATE);
 443                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 444                 MWL8K_CMDNAME(SET_MAC_ADDR);
 445                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 446                 MWL8K_CMDNAME(BSS_START);
 447                 MWL8K_CMDNAME(SET_NEW_STN);
 448                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 449                 MWL8K_CMDNAME(UPDATE_STADB);
 450                 MWL8K_CMDNAME(BASTREAM);
 451                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 452         default:
 453                 snprintf(buf, bufsize, "0x%x", cmd);
 454         }
 455 #undef MWL8K_CMDNAME
 456
 457         return buf;
 458 }
 459
 460 /* Hardware and firmware reset */
 461 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 462 {
 463         iowrite32(MWL8K_H2A_INT_RESET,
 464                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 465         iowrite32(MWL8K_H2A_INT_RESET,
 466                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 467         msleep(20);
 468 }
 469
 470 /* Release fw image */
 471 static void mwl8k_release_fw(const struct firmware **fw)
 472 {
 473         if (*fw == NULL)
 474                 return;
 475         release_firmware(*fw);
 476         *fw = NULL;
 477 }
 478
 479 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 480 {
 481         mwl8k_release_fw(&priv->fw_ucode);
 482         mwl8k_release_fw(&priv->fw_helper);
 483 }
 484
 485 /* states for asynchronous f/w loading */
 486 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 487 enum {
 488         FW_STATE_INIT = 0,
 489         FW_STATE_LOADING_PREF,
 490         FW_STATE_LOADING_ALT,
 491         FW_STATE_ERROR,
 492 };
 493
 494 /* Request fw image */
 495 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 496                             const char *fname, const struct firmware **fw,
 497                             bool nowait)
 498 {
 499         /* release current image */
 500         if (*fw != NULL)
 501                 mwl8k_release_fw(fw);
 502
 503         if (nowait)
 504                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 505                                                &priv->pdev->dev, GFP_KERNEL,
 506                                                priv, mwl8k_fw_state_machine);
 507         else
 508                 return request_firmware(fw, fname, &priv->pdev->dev);
 509 }
 510
 511 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 512                                   bool nowait)
 513 {
 514         struct mwl8k_device_info *di = priv->device_info;
 515         int rc;
 516
 517         if (di->helper_image != NULL) {
 518                 if (nowait)
 519                         rc = mwl8k_request_fw(priv, di->helper_image,
 520                                               &priv->fw_helper, true);
 521                 else
 522                         rc = mwl8k_request_fw(priv, di->helper_image,
 523                                               &priv->fw_helper, false);
 524                 if (rc)
 525                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 526                                pci_name(priv->pdev), di->helper_image);
 527
 528                 if (rc || nowait)
 529                         return rc;
 530         }
 531
 532         if (nowait) {
 533                 /*
 534                  * if we get here, no helper image is needed.  Skip the
 535                  * FW_STATE_INIT state.
 536                  */
 537                 priv->fw_state = FW_STATE_LOADING_PREF;
 538                 rc = mwl8k_request_fw(priv, fw_image,
 539                                       &priv->fw_ucode,
 540                                       true);
 541         } else
 542                 rc = mwl8k_request_fw(priv, fw_image,
 543                                       &priv->fw_ucode, false);
 544         if (rc) {
 545                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 546                        pci_name(priv->pdev), fw_image);
 547                 mwl8k_release_fw(&priv->fw_helper);
 548                 return rc;
 549         }
 550
 551         return 0;
 552 }
 553
 554 struct mwl8k_cmd_pkt {
 555         __le16  code;
 556         __le16  length;
 557         __u8    seq_num;
 558         __u8    macid;
 559         __le16  result;
 560         char    payload[0];
 561 } __packed;
 562
 563 /*
 564  * Firmware loading.
 565  */
 566 static int
 567 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 568 {
 569         void __iomem *regs = priv->regs;
 570         dma_addr_t dma_addr;
 571         int loops;
 572
 573         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 574         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 575                 return -ENOMEM;
 576
 577         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 578         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 579         iowrite32(MWL8K_H2A_INT_DOORBELL,
 580                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 581         iowrite32(MWL8K_H2A_INT_DUMMY,
 582                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 583
 584         loops = 1000;
 585         do {
 586                 u32 int_code;
 587
 588                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 589                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 590                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 591                         break;
 592                 }
 593
 594                 cond_resched();
 595                 udelay(1);
 596         } while (--loops);
 597
 598         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 599
 600         return loops ? 0 : -ETIMEDOUT;
 601 }
 602
 603 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 604                                 const u8 *data, size_t length)
 605 {
 606         struct mwl8k_cmd_pkt *cmd;
 607         int done;
 608         int rc = 0;
 609
 610         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 611         if (cmd == NULL)
 612                 return -ENOMEM;
 613
 614         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 615         cmd->seq_num = 0;
 616         cmd->macid = 0;
 617         cmd->result = 0;
 618
 619         done = 0;
 620         while (length) {
 621                 int block_size = length > 256 ? 256 : length;
 622
 623                 memcpy(cmd->payload, data + done, block_size);
 624                 cmd->length = cpu_to_le16(block_size);
 625
 626                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 627                                                 sizeof(*cmd) + block_size);
 628                 if (rc)
 629                         break;
 630
 631                 done += block_size;
 632                 length -= block_size;
 633         }
 634
 635         if (!rc) {
 636                 cmd->length = 0;
 637                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 638         }
 639
 640         kfree(cmd);
 641
 642         return rc;
 643 }
 644
 645 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 646                                 const u8 *data, size_t length)
 647 {
 648         unsigned char *buffer;
 649         int may_continue, rc = 0;
 650         u32 done, prev_block_size;
 651
 652         buffer = kmalloc(1024, GFP_KERNEL);
 653         if (buffer == NULL)
 654                 return -ENOMEM;
 655
 656         done = 0;
 657         prev_block_size = 0;
 658         may_continue = 1000;
 659         while (may_continue > 0) {
 660                 u32 block_size;
 661
 662                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 663                 if (block_size & 1) {
 664                         block_size &= ~1;
 665                         may_continue--;
 666                 } else {
 667                         done += prev_block_size;
 668                         length -= prev_block_size;
 669                 }
 670
 671                 if (block_size > 1024 || block_size > length) {
 672                         rc = -EOVERFLOW;
 673                         break;
 674                 }
 675
 676                 if (length == 0) {
 677                         rc = 0;
 678                         break;
 679                 }
 680
 681                 if (block_size == 0) {
 682                         rc = -EPROTO;
 683                         may_continue--;
 684                         udelay(1);
 685                         continue;
 686                 }
 687
 688                 prev_block_size = block_size;
 689                 memcpy(buffer, data + done, block_size);
 690
 691                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 692                 if (rc)
 693                         break;
 694         }
 695
 696         if (!rc && length != 0)
 697                 rc = -EREMOTEIO;
 698
 699         kfree(buffer);
 700
 701         return rc;
 702 }
 703
 704 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 705 {
 706         struct mwl8k_priv *priv = hw->priv;
 707         const struct firmware *fw = priv->fw_ucode;
 708         int rc;
 709         int loops;
 710
 711         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 712                 const struct firmware *helper = priv->fw_helper;
 713
 714                 if (helper == NULL) {
 715                         printk(KERN_ERR "%s: helper image needed but none "
 716                                "given\n", pci_name(priv->pdev));
 717                         return -EINVAL;
 718                 }
 719
 720                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 721                 if (rc) {
 722                         printk(KERN_ERR "%s: unable to load firmware "
 723                                "helper image\n", pci_name(priv->pdev));
 724                         return rc;
 725                 }
 726                 msleep(20);
 727
 728                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 729         } else {
 730                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 731         }
 732
 733         if (rc) {
 734                 printk(KERN_ERR "%s: unable to load firmware image\n",
 735                        pci_name(priv->pdev));
 736                 return rc;
 737         }
 738
 739         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 740
 741         loops = 500000;
 742         do {
 743                 u32 ready_code;
 744
 745                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 746                 if (ready_code == MWL8K_FWAP_READY) {
 747                         priv->ap_fw = true;
 748                         break;
 749                 } else if (ready_code == MWL8K_FWSTA_READY) {
 750                         priv->ap_fw = false;
 751                         break;
 752                 }
 753
 754                 cond_resched();
 755                 udelay(1);
 756         } while (--loops);
 757
 758         return loops ? 0 : -ETIMEDOUT;
 759 }
 760
 761
 762 /* DMA header used by firmware and hardware.  */
 763 struct mwl8k_dma_data {
 764         __le16 fwlen;
 765         struct ieee80211_hdr wh;
 766         char data[0];
 767 } __packed;
 768
 769 /* Routines to add/remove DMA header from skb.  */
 770 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 771 {
 772         struct mwl8k_dma_data *tr;
 773         int hdrlen;
 774
 775         tr = (struct mwl8k_dma_data *)skb->data;
 776         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 777
 778         if (hdrlen != sizeof(tr->wh)) {
 779                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 780                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 781                         *((__le16 *)(tr->data - 2)) = qos;
 782                 } else {
 783                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 784                 }
 785         }
 786
 787         if (hdrlen != sizeof(*tr))
 788                 skb_pull(skb, sizeof(*tr) - hdrlen);
 789 }
 790
 791 #define REDUCED_TX_HEADROOM     8
 792
 793 static void
 794 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
 795                                                 int head_pad, int tail_pad)
 796 {
 797         struct ieee80211_hdr *wh;
 798         int hdrlen;
 799         int reqd_hdrlen;
 800         struct mwl8k_dma_data *tr;
 801
 802         /*
 803          * Add a firmware DMA header; the firmware requires that we
 804          * present a 2-byte payload length followed by a 4-address
 805          * header (without QoS field), followed (optionally) by any
 806          * WEP/ExtIV header (but only filled in for CCMP).
 807          */
 808         wh = (struct ieee80211_hdr *)skb->data;
 809
 810         hdrlen = ieee80211_hdrlen(wh->frame_control);
 811
 812         /*
 813          * Check if skb_resize is required because of
 814          * tx_headroom adjustment.
 815          */
 816         if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
 817                                                 + REDUCED_TX_HEADROOM))) {
 818                 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
 819
 820                         wiphy_err(priv->hw->wiphy,
 821                                         "Failed to reallocate TX buffer\n");
 822                         return;
 823                 }
 824                 skb->truesize += REDUCED_TX_HEADROOM;
 825         }
 826
 827         reqd_hdrlen = sizeof(*tr) + head_pad;
 828
 829         if (hdrlen != reqd_hdrlen)
 830                 skb_push(skb, reqd_hdrlen - hdrlen);
 831
 832         if (ieee80211_is_data_qos(wh->frame_control))
 833                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 834
 835         tr = (struct mwl8k_dma_data *)skb->data;
 836         if (wh != &tr->wh)
 837                 memmove(&tr->wh, wh, hdrlen);
 838         if (hdrlen != sizeof(tr->wh))
 839                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 840
 841         /*
 842          * Firmware length is the length of the fully formed "802.11
 843          * payload".  That is, everything except for the 802.11 header.
 844          * This includes all crypto material including the MIC.
 845          */
 846         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 847 }
 848
 849 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
 850                 struct sk_buff *skb)
 851 {
 852         struct ieee80211_hdr *wh;
 853         struct ieee80211_tx_info *tx_info;
 854         struct ieee80211_key_conf *key_conf;
 855         int data_pad;
 856         int head_pad = 0;
 857
 858         wh = (struct ieee80211_hdr *)skb->data;
 859
 860         tx_info = IEEE80211_SKB_CB(skb);
 861
 862         key_conf = NULL;
 863         if (ieee80211_is_data(wh->frame_control))
 864                 key_conf = tx_info->control.hw_key;
 865
 866         /*
 867          * Make sure the packet header is in the DMA header format (4-address
 868          * without QoS), and add head & tail padding when HW crypto is enabled.
 869          *
 870          * We have the following trailer padding requirements:
 871          * - WEP: 4 trailer bytes (ICV)
 872          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 873          * - CCMP: 8 trailer bytes (MIC)
 874          */
 875         data_pad = 0;
 876         if (key_conf != NULL) {
 877                 head_pad = key_conf->iv_len;
 878                 switch (key_conf->cipher) {
 879                 case WLAN_CIPHER_SUITE_WEP40:
 880                 case WLAN_CIPHER_SUITE_WEP104:
 881                         data_pad = 4;
 882                         break;
 883                 case WLAN_CIPHER_SUITE_TKIP:
 884                         data_pad = 12;
 885                         break;
 886                 case WLAN_CIPHER_SUITE_CCMP:
 887                         data_pad = 8;
 888                         break;
 889                 }
 890         }
 891         mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
 892 }
 893
 894 /*
 895  * Packet reception for 88w8366 AP firmware.
 896  */
 897 struct mwl8k_rxd_8366_ap {
 898         __le16 pkt_len;
 899         __u8 sq2;
 900         __u8 rate;
 901         __le32 pkt_phys_addr;
 902         __le32 next_rxd_phys_addr;
 903         __le16 qos_control;
 904         __le16 htsig2;
 905         __le32 hw_rssi_info;
 906         __le32 hw_noise_floor_info;
 907         __u8 noise_floor;
 908         __u8 pad0[3];
 909         __u8 rssi;
 910         __u8 rx_status;
 911         __u8 channel;
 912         __u8 rx_ctrl;
 913 } __packed;
 914
 915 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 916 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 917 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 918
 919 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 920
 921 /* 8366 AP rx_status bits */
 922 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 923 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 924 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 925 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 926 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 927
 928 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 929 {
 930         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 931
 932         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 933         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 934 }
 935
 936 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 937 {
 938         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 939
 940         rxd->pkt_len = cpu_to_le16(len);
 941         rxd->pkt_phys_addr = cpu_to_le32(addr);
 942         wmb();
 943         rxd->rx_ctrl = 0;
 944 }
 945
 946 static int
 947 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 948                           __le16 *qos, s8 *noise)
 949 {
 950         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 951
 952         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 953                 return -1;
 954         rmb();
 955
 956         memset(status, 0, sizeof(*status));
 957
 958         status->signal = -rxd->rssi;
 959         *noise = -rxd->noise_floor;
 960
 961         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 962                 status->flag |= RX_FLAG_HT;
 963                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 964                         status->flag |= RX_FLAG_40MHZ;
 965                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 966         } else {
 967                 int i;
 968
 969                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 970                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 971                                 status->rate_idx = i;
 972                                 break;
 973                         }
 974                 }
 975         }
 976
 977         if (rxd->channel > 14) {
 978                 status->band = IEEE80211_BAND_5GHZ;
 979                 if (!(status->flag & RX_FLAG_HT))
 980                         status->rate_idx -= 5;
 981         } else {
 982                 status->band = IEEE80211_BAND_2GHZ;
 983         }
 984         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 985                                                       status->band);
 986
 987         *qos = rxd->qos_control;
 988
 989         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 990             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 991             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 992                 status->flag |= RX_FLAG_MMIC_ERROR;
 993
 994         return le16_to_cpu(rxd->pkt_len);
 995 }
 996
 997 static struct rxd_ops rxd_8366_ap_ops = {
 998         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 999         .rxd_init       = mwl8k_rxd_8366_ap_init,
1000         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
1001         .rxd_process    = mwl8k_rxd_8366_ap_process,
1002 };
1003
1004 /*
1005  * Packet reception for STA firmware.
1006  */
1007 struct mwl8k_rxd_sta {
1008         __le16 pkt_len;
1009         __u8 link_quality;
1010         __u8 noise_level;
1011         __le32 pkt_phys_addr;
1012         __le32 next_rxd_phys_addr;
1013         __le16 qos_control;
1014         __le16 rate_info;
1015         __le32 pad0[4];
1016         __u8 rssi;
1017         __u8 channel;
1018         __le16 pad1;
1019         __u8 rx_ctrl;
1020         __u8 rx_status;
1021         __u8 pad2[2];
1022 } __packed;
1023
1024 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
1025 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
1026 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
1027 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
1028 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
1029 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
1030
1031 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
1032 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
1033 /* ICV=0 or MIC=1 */
1034 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
1035 /* Key is uploaded only in failure case */
1036 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
1037
1038 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1039 {
1040         struct mwl8k_rxd_sta *rxd = _rxd;
1041
1042         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1043         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1044 }
1045
1046 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1047 {
1048         struct mwl8k_rxd_sta *rxd = _rxd;
1049
1050         rxd->pkt_len = cpu_to_le16(len);
1051         rxd->pkt_phys_addr = cpu_to_le32(addr);
1052         wmb();
1053         rxd->rx_ctrl = 0;
1054 }
1055
1056 static int
1057 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1058                        __le16 *qos, s8 *noise)
1059 {
1060         struct mwl8k_rxd_sta *rxd = _rxd;
1061         u16 rate_info;
1062
1063         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1064                 return -1;
1065         rmb();
1066
1067         rate_info = le16_to_cpu(rxd->rate_info);
1068
1069         memset(status, 0, sizeof(*status));
1070
1071         status->signal = -rxd->rssi;
1072         *noise = -rxd->noise_level;
1073         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1074         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1075
1076         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1077                 status->flag |= RX_FLAG_SHORTPRE;
1078         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1079                 status->flag |= RX_FLAG_40MHZ;
1080         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1081                 status->flag |= RX_FLAG_SHORT_GI;
1082         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1083                 status->flag |= RX_FLAG_HT;
1084
1085         if (rxd->channel > 14) {
1086                 status->band = IEEE80211_BAND_5GHZ;
1087                 if (!(status->flag & RX_FLAG_HT))
1088                         status->rate_idx -= 5;
1089         } else {
1090                 status->band = IEEE80211_BAND_2GHZ;
1091         }
1092         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1093                                                       status->band);
1094
1095         *qos = rxd->qos_control;
1096         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1097             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1098                 status->flag |= RX_FLAG_MMIC_ERROR;
1099
1100         return le16_to_cpu(rxd->pkt_len);
1101 }
1102
1103 static struct rxd_ops rxd_sta_ops = {
1104         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1105         .rxd_init       = mwl8k_rxd_sta_init,
1106         .rxd_refill     = mwl8k_rxd_sta_refill,
1107         .rxd_process    = mwl8k_rxd_sta_process,
1108 };
1109
1110
1111 #define MWL8K_RX_DESCS          256
1112 #define MWL8K_RX_MAXSZ          3800
1113
1114 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1115 {
1116         struct mwl8k_priv *priv = hw->priv;
1117         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1118         int size;
1119         int i;
1120
1121         rxq->rxd_count = 0;
1122         rxq->head = 0;
1123         rxq->tail = 0;
1124
1125         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1126
1127         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1128         if (rxq->rxd == NULL) {
1129                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1130                 return -ENOMEM;
1131         }
1132         memset(rxq->rxd, 0, size);
1133
1134         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1135         if (rxq->buf == NULL) {
1136                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1137                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1138                 return -ENOMEM;
1139         }
1140
1141         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1142                 int desc_size;
1143                 void *rxd;
1144                 int nexti;
1145                 dma_addr_t next_dma_addr;
1146
1147                 desc_size = priv->rxd_ops->rxd_size;
1148                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1149
1150                 nexti = i + 1;
1151                 if (nexti == MWL8K_RX_DESCS)
1152                         nexti = 0;
1153                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1154
1155                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1156         }
1157
1158         return 0;
1159 }
1160
1161 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1162 {
1163         struct mwl8k_priv *priv = hw->priv;
1164         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1165         int refilled;
1166
1167         refilled = 0;
1168         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1169                 struct sk_buff *skb;
1170                 dma_addr_t addr;
1171                 int rx;
1172                 void *rxd;
1173
1174                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1175                 if (skb == NULL)
1176                         break;
1177
1178                 addr = pci_map_single(priv->pdev, skb->data,
1179                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1180
1181                 rxq->rxd_count++;
1182                 rx = rxq->tail++;
1183                 if (rxq->tail == MWL8K_RX_DESCS)
1184                         rxq->tail = 0;
1185                 rxq->buf[rx].skb = skb;
1186                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1187
1188                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1189                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1190
1191                 refilled++;
1192         }
1193
1194         return refilled;
1195 }
1196
1197 /* Must be called only when the card's reception is completely halted */
1198 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1199 {
1200         struct mwl8k_priv *priv = hw->priv;
1201         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202         int i;
1203
1204         if (rxq->rxd == NULL)
1205                 return;
1206
1207         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1208                 if (rxq->buf[i].skb != NULL) {
1209                         pci_unmap_single(priv->pdev,
1210                                          dma_unmap_addr(&rxq->buf[i], dma),
1211                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1212                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1213
1214                         kfree_skb(rxq->buf[i].skb);
1215                         rxq->buf[i].skb = NULL;
1216                 }
1217         }
1218
1219         kfree(rxq->buf);
1220         rxq->buf = NULL;
1221
1222         pci_free_consistent(priv->pdev,
1223                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1224                             rxq->rxd, rxq->rxd_dma);
1225         rxq->rxd = NULL;
1226 }
1227
1228
1229 /*
1230  * Scan a list of BSSIDs to process for finalize join.
1231  * Allows for extension to process multiple BSSIDs.
1232  */
1233 static inline int
1234 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1235 {
1236         return priv->capture_beacon &&
1237                 ieee80211_is_beacon(wh->frame_control) &&
1238                 ether_addr_equal(wh->addr3, priv->capture_bssid);
1239 }
1240
1241 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1242                                      struct sk_buff *skb)
1243 {
1244         struct mwl8k_priv *priv = hw->priv;
1245
1246         priv->capture_beacon = false;
1247         memset(priv->capture_bssid, 0, ETH_ALEN);
1248
1249         /*
1250          * Use GFP_ATOMIC as rxq_process is called from
1251          * the primary interrupt handler, memory allocation call
1252          * must not sleep.
1253          */
1254         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1255         if (priv->beacon_skb != NULL)
1256                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1257 }
1258
1259 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1260                                                    u8 *bssid)
1261 {
1262         struct mwl8k_vif *mwl8k_vif;
1263
1264         list_for_each_entry(mwl8k_vif,
1265                             vif_list, list) {
1266                 if (memcmp(bssid, mwl8k_vif->bssid,
1267                            ETH_ALEN) == 0)
1268                         return mwl8k_vif;
1269         }
1270
1271         return NULL;
1272 }
1273
1274 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1275 {
1276         struct mwl8k_priv *priv = hw->priv;
1277         struct mwl8k_vif *mwl8k_vif = NULL;
1278         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1279         int processed;
1280
1281         processed = 0;
1282         while (rxq->rxd_count && limit--) {
1283                 struct sk_buff *skb;
1284                 void *rxd;
1285                 int pkt_len;
1286                 struct ieee80211_rx_status status;
1287                 struct ieee80211_hdr *wh;
1288                 __le16 qos;
1289
1290                 skb = rxq->buf[rxq->head].skb;
1291                 if (skb == NULL)
1292                         break;
1293
1294                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1295
1296                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1297                                                         &priv->noise);
1298                 if (pkt_len < 0)
1299                         break;
1300
1301                 rxq->buf[rxq->head].skb = NULL;
1302
1303                 pci_unmap_single(priv->pdev,
1304                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1305                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1306                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1307
1308                 rxq->head++;
1309                 if (rxq->head == MWL8K_RX_DESCS)
1310                         rxq->head = 0;
1311
1312                 rxq->rxd_count--;
1313
1314                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1315
1316                 /*
1317                  * Check for a pending join operation.  Save a
1318                  * copy of the beacon and schedule a tasklet to
1319                  * send a FINALIZE_JOIN command to the firmware.
1320                  */
1321                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1322                         mwl8k_save_beacon(hw, skb);
1323
1324                 if (ieee80211_has_protected(wh->frame_control)) {
1325
1326                         /* Check if hw crypto has been enabled for
1327                          * this bss. If yes, set the status flags
1328                          * accordingly
1329                          */
1330                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1331                                                                 wh->addr1);
1332
1333                         if (mwl8k_vif != NULL &&
1334                             mwl8k_vif->is_hw_crypto_enabled) {
1335                                 /*
1336                                  * When MMIC ERROR is encountered
1337                                  * by the firmware, payload is
1338                                  * dropped and only 32 bytes of
1339                                  * mwl8k Firmware header is sent
1340                                  * to the host.
1341                                  *
1342                                  * We need to add four bytes of
1343                                  * key information.  In it
1344                                  * MAC80211 expects keyidx set to
1345                                  * 0 for triggering Counter
1346                                  * Measure of MMIC failure.
1347                                  */
1348                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1349                                         struct mwl8k_dma_data *tr;
1350                                         tr = (struct mwl8k_dma_data *)skb->data;
1351                                         memset((void *)&(tr->data), 0, 4);
1352                                         pkt_len += 4;
1353                                 }
1354
1355                                 if (!ieee80211_is_auth(wh->frame_control))
1356                                         status.flag |= RX_FLAG_IV_STRIPPED |
1357                                                        RX_FLAG_DECRYPTED |
1358                                                        RX_FLAG_MMIC_STRIPPED;
1359                         }
1360                 }
1361
1362                 skb_put(skb, pkt_len);
1363                 mwl8k_remove_dma_header(skb, qos);
1364                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1365                 ieee80211_rx_irqsafe(hw, skb);
1366
1367                 processed++;
1368         }
1369
1370         return processed;
1371 }
1372
1373
1374 /*
1375  * Packet transmission.
1376  */
1377
1378 #define MWL8K_TXD_STATUS_OK                     0x00000001
1379 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1380 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1381 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1382 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1383
1384 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1385 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1386 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1387 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1388 #define MWL8K_QOS_EOSP                          0x0010
1389
1390 struct mwl8k_tx_desc {
1391         __le32 status;
1392         __u8 data_rate;
1393         __u8 tx_priority;
1394         __le16 qos_control;
1395         __le32 pkt_phys_addr;
1396         __le16 pkt_len;
1397         __u8 dest_MAC_addr[ETH_ALEN];
1398         __le32 next_txd_phys_addr;
1399         __le32 timestamp;
1400         __le16 rate_info;
1401         __u8 peer_id;
1402         __u8 tx_frag_cnt;
1403 } __packed;
1404
1405 #define MWL8K_TX_DESCS          128
1406
1407 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1408 {
1409         struct mwl8k_priv *priv = hw->priv;
1410         struct mwl8k_tx_queue *txq = priv->txq + index;
1411         int size;
1412         int i;
1413
1414         txq->len = 0;
1415         txq->head = 0;
1416         txq->tail = 0;
1417
1418         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1419
1420         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1421         if (txq->txd == NULL) {
1422                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1423                 return -ENOMEM;
1424         }
1425         memset(txq->txd, 0, size);
1426
1427         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1428         if (txq->skb == NULL) {
1429                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1430                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1431                 return -ENOMEM;
1432         }
1433
1434         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1435                 struct mwl8k_tx_desc *tx_desc;
1436                 int nexti;
1437
1438                 tx_desc = txq->txd + i;
1439                 nexti = (i + 1) % MWL8K_TX_DESCS;
1440
1441                 tx_desc->status = 0;
1442                 tx_desc->next_txd_phys_addr =
1443                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1444         }
1445
1446         return 0;
1447 }
1448
1449 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1450 {
1451         iowrite32(MWL8K_H2A_INT_PPA_READY,
1452                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1453         iowrite32(MWL8K_H2A_INT_DUMMY,
1454                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1455         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1456 }
1457
1458 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1459 {
1460         struct mwl8k_priv *priv = hw->priv;
1461         int i;
1462
1463         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1464                 struct mwl8k_tx_queue *txq = priv->txq + i;
1465                 int fw_owned = 0;
1466                 int drv_owned = 0;
1467                 int unused = 0;
1468                 int desc;
1469
1470                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1471                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1472                         u32 status;
1473
1474                         status = le32_to_cpu(tx_desc->status);
1475                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1476                                 fw_owned++;
1477                         else
1478                                 drv_owned++;
1479
1480                         if (tx_desc->pkt_len == 0)
1481                                 unused++;
1482                 }
1483
1484                 wiphy_err(hw->wiphy,
1485                           "txq[%d] len=%d head=%d tail=%d "
1486                           "fw_owned=%d drv_owned=%d unused=%d\n",
1487                           i,
1488                           txq->len, txq->head, txq->tail,
1489                           fw_owned, drv_owned, unused);
1490         }
1491 }
1492
1493 /*
1494  * Must be called with priv->fw_mutex held and tx queues stopped.
1495  */
1496 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1497
1498 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1499 {
1500         struct mwl8k_priv *priv = hw->priv;
1501         DECLARE_COMPLETION_ONSTACK(tx_wait);
1502         int retry;
1503         int rc;
1504
1505         might_sleep();
1506
1507         /* Since fw restart is in progress, allow only the firmware
1508          * commands from the restart code and block the other
1509          * commands since they are going to fail in any case since
1510          * the firmware has crashed
1511          */
1512         if (priv->hw_restart_in_progress) {
1513                 if (priv->hw_restart_owner == current)
1514                         return 0;
1515                 else
1516                         return -EBUSY;
1517         }
1518
1519         /*
1520          * The TX queues are stopped at this point, so this test
1521          * doesn't need to take ->tx_lock.
1522          */
1523         if (!priv->pending_tx_pkts)
1524                 return 0;
1525
1526         retry = 0;
1527         rc = 0;
1528
1529         spin_lock_bh(&priv->tx_lock);
1530         priv->tx_wait = &tx_wait;
1531         while (!rc) {
1532                 int oldcount;
1533                 unsigned long timeout;
1534
1535                 oldcount = priv->pending_tx_pkts;
1536
1537                 spin_unlock_bh(&priv->tx_lock);
1538                 timeout = wait_for_completion_timeout(&tx_wait,
1539                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1540                 spin_lock_bh(&priv->tx_lock);
1541
1542                 if (timeout) {
1543                         WARN_ON(priv->pending_tx_pkts);
1544                         if (retry)
1545                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1546                         break;
1547                 }
1548
1549                 if (priv->pending_tx_pkts < oldcount) {
1550                         wiphy_notice(hw->wiphy,
1551                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1552                                      oldcount, priv->pending_tx_pkts);
1553                         retry = 1;
1554                         continue;
1555                 }
1556
1557                 priv->tx_wait = NULL;
1558
1559                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1560                           MWL8K_TX_WAIT_TIMEOUT_MS);
1561                 mwl8k_dump_tx_rings(hw);
1562                 priv->hw_restart_in_progress = true;
1563                 ieee80211_queue_work(hw, &priv->fw_reload);
1564
1565                 rc = -ETIMEDOUT;
1566         }
1567         spin_unlock_bh(&priv->tx_lock);
1568
1569         return rc;
1570 }
1571
1572 #define MWL8K_TXD_SUCCESS(status)                               \
1573         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1574                      MWL8K_TXD_STATUS_OK_RETRY |                \
1575                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1576
1577 static int mwl8k_tid_queue_mapping(u8 tid)
1578 {
1579         BUG_ON(tid > 7);
1580
1581         switch (tid) {
1582         case 0:
1583         case 3:
1584                 return IEEE80211_AC_BE;
1585                 break;
1586         case 1:
1587         case 2:
1588                 return IEEE80211_AC_BK;
1589                 break;
1590         case 4:
1591         case 5:
1592                 return IEEE80211_AC_VI;
1593                 break;
1594         case 6:
1595         case 7:
1596                 return IEEE80211_AC_VO;
1597                 break;
1598         default:
1599                 return -1;
1600                 break;
1601         }
1602 }
1603
1604 /* The firmware will fill in the rate information
1605  * for each packet that gets queued in the hardware
1606  * and these macros will interpret that info.
1607  */
1608
1609 #define RI_FORMAT(a)              (a & 0x0001)
1610 #define RI_RATE_ID_MCS(a)        ((a & 0x01f8) >> 3)
1611
1612 static int
1613 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1614 {
1615         struct mwl8k_priv *priv = hw->priv;
1616         struct mwl8k_tx_queue *txq = priv->txq + index;
1617         int processed;
1618
1619         processed = 0;
1620         while (txq->len > 0 && limit--) {
1621                 int tx;
1622                 struct mwl8k_tx_desc *tx_desc;
1623                 unsigned long addr;
1624                 int size;
1625                 struct sk_buff *skb;
1626                 struct ieee80211_tx_info *info;
1627                 u32 status;
1628                 struct ieee80211_sta *sta;
1629                 struct mwl8k_sta *sta_info = NULL;
1630                 u16 rate_info;
1631                 struct ieee80211_hdr *wh;
1632
1633                 tx = txq->head;
1634                 tx_desc = txq->txd + tx;
1635
1636                 status = le32_to_cpu(tx_desc->status);
1637
1638                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1639                         if (!force)
1640                                 break;
1641                         tx_desc->status &=
1642                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1643                 }
1644
1645                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1646                 BUG_ON(txq->len == 0);
1647                 txq->len--;
1648                 priv->pending_tx_pkts--;
1649
1650                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1651                 size = le16_to_cpu(tx_desc->pkt_len);
1652                 skb = txq->skb[tx];
1653                 txq->skb[tx] = NULL;
1654
1655                 BUG_ON(skb == NULL);
1656                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1657
1658                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1659
1660                 wh = (struct ieee80211_hdr *) skb->data;
1661
1662                 /* Mark descriptor as unused */
1663                 tx_desc->pkt_phys_addr = 0;
1664                 tx_desc->pkt_len = 0;
1665
1666                 info = IEEE80211_SKB_CB(skb);
1667                 if (ieee80211_is_data(wh->frame_control)) {
1668                         rcu_read_lock();
1669                         sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1670                                                            wh->addr2);
1671                         if (sta) {
1672                                 sta_info = MWL8K_STA(sta);
1673                                 BUG_ON(sta_info == NULL);
1674                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1675                                 /* If rate is < 6.5 Mpbs for an ht station
1676                                  * do not form an ampdu. If the station is a
1677                                  * legacy station (format = 0), do not form an
1678                                  * ampdu
1679                                  */
1680                                 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1681                                     RI_FORMAT(rate_info) == 0) {
1682                                         sta_info->is_ampdu_allowed = false;
1683                                 } else {
1684                                         sta_info->is_ampdu_allowed = true;
1685                                 }
1686                         }
1687                         rcu_read_unlock();
1688                 }
1689
1690                 ieee80211_tx_info_clear_status(info);
1691
1692                 /* Rate control is happening in the firmware.
1693                  * Ensure no tx rate is being reported.
1694                  */
1695                 info->status.rates[0].idx = -1;
1696                 info->status.rates[0].count = 1;
1697
1698                 if (MWL8K_TXD_SUCCESS(status))
1699                         info->flags |= IEEE80211_TX_STAT_ACK;
1700
1701                 ieee80211_tx_status_irqsafe(hw, skb);
1702
1703                 processed++;
1704         }
1705
1706         return processed;
1707 }
1708
1709 /* must be called only when the card's transmit is completely halted */
1710 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1711 {
1712         struct mwl8k_priv *priv = hw->priv;
1713         struct mwl8k_tx_queue *txq = priv->txq + index;
1714
1715         if (txq->txd == NULL)
1716                 return;
1717
1718         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1719
1720         kfree(txq->skb);
1721         txq->skb = NULL;
1722
1723         pci_free_consistent(priv->pdev,
1724                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1725                             txq->txd, txq->txd_dma);
1726         txq->txd = NULL;
1727 }
1728
1729 /* caller must hold priv->stream_lock when calling the stream functions */
1730 static struct mwl8k_ampdu_stream *
1731 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1732 {
1733         struct mwl8k_ampdu_stream *stream;
1734         struct mwl8k_priv *priv = hw->priv;
1735         int i;
1736
1737         for (i = 0; i < priv->num_ampdu_queues; i++) {
1738                 stream = &priv->ampdu[i];
1739                 if (stream->state == AMPDU_NO_STREAM) {
1740                         stream->sta = sta;
1741                         stream->state = AMPDU_STREAM_NEW;
1742                         stream->tid = tid;
1743                         stream->idx = i;
1744                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1745                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1746                                     sta->addr, tid);
1747                         return stream;
1748                 }
1749         }
1750         return NULL;
1751 }
1752
1753 static int
1754 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1755 {
1756         int ret;
1757
1758         /* if the stream has already been started, don't start it again */
1759         if (stream->state != AMPDU_STREAM_NEW)
1760                 return 0;
1761         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1762         if (ret)
1763                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1764                             "%d\n", stream->sta->addr, stream->tid, ret);
1765         else
1766                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1767                             stream->sta->addr, stream->tid);
1768         return ret;
1769 }
1770
1771 static void
1772 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1773 {
1774         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1775                     stream->tid);
1776         memset(stream, 0, sizeof(*stream));
1777 }
1778
1779 static struct mwl8k_ampdu_stream *
1780 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1781 {
1782         struct mwl8k_priv *priv = hw->priv;
1783         int i;
1784
1785         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1786                 struct mwl8k_ampdu_stream *stream;
1787                 stream = &priv->ampdu[i];
1788                 if (stream->state == AMPDU_NO_STREAM)
1789                         continue;
1790                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1791                     stream->tid == tid)
1792                         return stream;
1793         }
1794         return NULL;
1795 }
1796
1797 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1798 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1799 {
1800         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1801         struct tx_traffic_info *tx_stats;
1802
1803         BUG_ON(tid >= MWL8K_MAX_TID);
1804         tx_stats = &sta_info->tx_stats[tid];
1805
1806         return sta_info->is_ampdu_allowed &&
1807                 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1808 }
1809
1810 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1811 {
1812         struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1813         struct tx_traffic_info *tx_stats;
1814
1815         BUG_ON(tid >= MWL8K_MAX_TID);
1816         tx_stats = &sta_info->tx_stats[tid];
1817
1818         if (tx_stats->start_time == 0)
1819                 tx_stats->start_time = jiffies;
1820
1821         /* reset the packet count after each second elapses.  If the number of
1822          * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1823          * an ampdu stream to be started.
1824          */
1825         if (jiffies - tx_stats->start_time > HZ) {
1826                 tx_stats->pkts = 0;
1827                 tx_stats->start_time = 0;
1828         } else
1829                 tx_stats->pkts++;
1830 }
1831
1832 static void
1833 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1834                int index,
1835                struct ieee80211_sta *sta,
1836                struct sk_buff *skb)
1837 {
1838         struct mwl8k_priv *priv = hw->priv;
1839         struct ieee80211_tx_info *tx_info;
1840         struct mwl8k_vif *mwl8k_vif;
1841         struct ieee80211_hdr *wh;
1842         struct mwl8k_tx_queue *txq;
1843         struct mwl8k_tx_desc *tx;
1844         dma_addr_t dma;
1845         u32 txstatus;
1846         u8 txdatarate;
1847         u16 qos;
1848         int txpriority;
1849         u8 tid = 0;
1850         struct mwl8k_ampdu_stream *stream = NULL;
1851         bool start_ba_session = false;
1852         bool mgmtframe = false;
1853         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1854
1855         wh = (struct ieee80211_hdr *)skb->data;
1856         if (ieee80211_is_data_qos(wh->frame_control))
1857                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1858         else
1859                 qos = 0;
1860
1861         if (ieee80211_is_mgmt(wh->frame_control))
1862                 mgmtframe = true;
1863
1864         if (priv->ap_fw)
1865                 mwl8k_encapsulate_tx_frame(priv, skb);
1866         else
1867                 mwl8k_add_dma_header(priv, skb, 0, 0);
1868
1869         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1870
1871         tx_info = IEEE80211_SKB_CB(skb);
1872         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1873
1874         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1875                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1876                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1877                 mwl8k_vif->seqno += 0x10;
1878         }
1879
1880         /* Setup firmware control bit fields for each frame type.  */
1881         txstatus = 0;
1882         txdatarate = 0;
1883         if (ieee80211_is_mgmt(wh->frame_control) ||
1884             ieee80211_is_ctl(wh->frame_control)) {
1885                 txdatarate = 0;
1886                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1887         } else if (ieee80211_is_data(wh->frame_control)) {
1888                 txdatarate = 1;
1889                 if (is_multicast_ether_addr(wh->addr1))
1890                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1891
1892                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1893                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1894                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1895                 else
1896                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1897         }
1898
1899         /* Queue ADDBA request in the respective data queue.  While setting up
1900          * the ampdu stream, mac80211 queues further packets for that
1901          * particular ra/tid pair.  However, packets piled up in the hardware
1902          * for that ra/tid pair will still go out. ADDBA request and the
1903          * related data packets going out from different queues asynchronously
1904          * will cause a shift in the receiver window which might result in
1905          * ampdu packets getting dropped at the receiver after the stream has
1906          * been setup.
1907          */
1908         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1909             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1910             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1911             priv->ap_fw)) {
1912                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1913                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1914                 index = mwl8k_tid_queue_mapping(tid);
1915         }
1916
1917         txpriority = index;
1918
1919         if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1920                         && skb->protocol != cpu_to_be16(ETH_P_PAE)
1921                         && ieee80211_is_data_qos(wh->frame_control)) {
1922                 tid = qos & 0xf;
1923                 mwl8k_tx_count_packet(sta, tid);
1924                 spin_lock(&priv->stream_lock);
1925                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1926                 if (stream != NULL) {
1927                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1928                                 txpriority = stream->txq_idx;
1929                                 index = stream->txq_idx;
1930                         } else if (stream->state == AMPDU_STREAM_NEW) {
1931                                 /* We get here if the driver sends us packets
1932                                  * after we've initiated a stream, but before
1933                                  * our ampdu_action routine has been called
1934                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1935                                  * for the ADDBA request.  So this packet can
1936                                  * go out with no risk of sequence number
1937                                  * mismatch.  No special handling is required.
1938                                  */
1939                         } else {
1940                                 /* Drop packets that would go out after the
1941                                  * ADDBA request was sent but before the ADDBA
1942                                  * response is received.  If we don't do this,
1943                                  * the recipient would probably receive it
1944                                  * after the ADDBA request with SSN 0.  This
1945                                  * will cause the recipient's BA receive window
1946                                  * to shift, which would cause the subsequent
1947                                  * packets in the BA stream to be discarded.
1948                                  * mac80211 queues our packets for us in this
1949                                  * case, so this is really just a safety check.
1950                                  */
1951                                 wiphy_warn(hw->wiphy,
1952                                            "Cannot send packet while ADDBA "
1953                                            "dialog is underway.\n");
1954                                 spin_unlock(&priv->stream_lock);
1955                                 dev_kfree_skb(skb);
1956                                 return;
1957                         }
1958                 } else {
1959                         /* Defer calling mwl8k_start_stream so that the current
1960                          * skb can go out before the ADDBA request.  This
1961                          * prevents sequence number mismatch at the recepient
1962                          * as described above.
1963                          */
1964                         if (mwl8k_ampdu_allowed(sta, tid)) {
1965                                 stream = mwl8k_add_stream(hw, sta, tid);
1966                                 if (stream != NULL)
1967                                         start_ba_session = true;
1968                         }
1969                 }
1970                 spin_unlock(&priv->stream_lock);
1971         }
1972
1973         dma = pci_map_single(priv->pdev, skb->data,
1974                                 skb->len, PCI_DMA_TODEVICE);
1975
1976         if (pci_dma_mapping_error(priv->pdev, dma)) {
1977                 wiphy_debug(hw->wiphy,
1978                             "failed to dma map skb, dropping TX frame.\n");
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                 dev_kfree_skb(skb);
1985                 return;
1986         }
1987
1988         spin_lock_bh(&priv->tx_lock);
1989
1990         txq = priv->txq + index;
1991
1992         /* Mgmt frames that go out frequently are probe
1993          * responses. Other mgmt frames got out relatively
1994          * infrequently. Hence reserve 2 buffers so that
1995          * other mgmt frames do not get dropped due to an
1996          * already queued probe response in one of the
1997          * reserved buffers.
1998          */
1999
2000         if (txq->len >= MWL8K_TX_DESCS - 2) {
2001                 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2002                         if (start_ba_session) {
2003                                 spin_lock(&priv->stream_lock);
2004                                 mwl8k_remove_stream(hw, stream);
2005                                 spin_unlock(&priv->stream_lock);
2006                         }
2007                         spin_unlock_bh(&priv->tx_lock);
2008                         dev_kfree_skb(skb);
2009                         return;
2010                 }
2011         }
2012
2013         BUG_ON(txq->skb[txq->tail] != NULL);
2014         txq->skb[txq->tail] = skb;
2015
2016         tx = txq->txd + txq->tail;
2017         tx->data_rate = txdatarate;
2018         tx->tx_priority = txpriority;
2019         tx->qos_control = cpu_to_le16(qos);
2020         tx->pkt_phys_addr = cpu_to_le32(dma);
2021         tx->pkt_len = cpu_to_le16(skb->len);
2022         tx->rate_info = 0;
2023         if (!priv->ap_fw && sta != NULL)
2024                 tx->peer_id = MWL8K_STA(sta)->peer_id;
2025         else
2026                 tx->peer_id = 0;
2027
2028         if (priv->ap_fw)
2029                 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2030                                                 MWL8K_HW_TIMER_REGISTER));
2031
2032         wmb();
2033         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2034
2035         txq->len++;
2036         priv->pending_tx_pkts++;
2037
2038         txq->tail++;
2039         if (txq->tail == MWL8K_TX_DESCS)
2040                 txq->tail = 0;
2041
2042         mwl8k_tx_start(priv);
2043
2044         spin_unlock_bh(&priv->tx_lock);
2045
2046         /* Initiate the ampdu session here */
2047         if (start_ba_session) {
2048                 spin_lock(&priv->stream_lock);
2049                 if (mwl8k_start_stream(hw, stream))
2050                         mwl8k_remove_stream(hw, stream);
2051                 spin_unlock(&priv->stream_lock);
2052         }
2053 }
2054
2055
2056 /*
2057  * Firmware access.
2058  *
2059  * We have the following requirements for issuing firmware commands:
2060  * - Some commands require that the packet transmit path is idle when
2061  *   the command is issued.  (For simplicity, we'll just quiesce the
2062  *   transmit path for every command.)
2063  * - There are certain sequences of commands that need to be issued to
2064  *   the hardware sequentially, with no other intervening commands.
2065  *
2066  * This leads to an implementation of a "firmware lock" as a mutex that
2067  * can be taken recursively, and which is taken by both the low-level
2068  * command submission function (mwl8k_post_cmd) as well as any users of
2069  * that function that require issuing of an atomic sequence of commands,
2070  * and quiesces the transmit path whenever it's taken.
2071  */
2072 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2073 {
2074         struct mwl8k_priv *priv = hw->priv;
2075
2076         if (priv->fw_mutex_owner != current) {
2077                 int rc;
2078
2079                 mutex_lock(&priv->fw_mutex);
2080                 ieee80211_stop_queues(hw);
2081
2082                 rc = mwl8k_tx_wait_empty(hw);
2083                 if (rc) {
2084                         if (!priv->hw_restart_in_progress)
2085                                 ieee80211_wake_queues(hw);
2086
2087                         mutex_unlock(&priv->fw_mutex);
2088
2089                         return rc;
2090                 }
2091
2092                 priv->fw_mutex_owner = current;
2093         }
2094
2095         priv->fw_mutex_depth++;
2096
2097         return 0;
2098 }
2099
2100 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2101 {
2102         struct mwl8k_priv *priv = hw->priv;
2103
2104         if (!--priv->fw_mutex_depth) {
2105                 if (!priv->hw_restart_in_progress)
2106                         ieee80211_wake_queues(hw);
2107
2108                 priv->fw_mutex_owner = NULL;
2109                 mutex_unlock(&priv->fw_mutex);
2110         }
2111 }
2112
2113
2114 /*
2115  * Command processing.
2116  */
2117
2118 /* Timeout firmware commands after 10s */
2119 #define MWL8K_CMD_TIMEOUT_MS    10000
2120
2121 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2122 {
2123         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2124         struct mwl8k_priv *priv = hw->priv;
2125         void __iomem *regs = priv->regs;
2126         dma_addr_t dma_addr;
2127         unsigned int dma_size;
2128         int rc;
2129         unsigned long timeout = 0;
2130         u8 buf[32];
2131
2132         cmd->result = (__force __le16) 0xffff;
2133         dma_size = le16_to_cpu(cmd->length);
2134         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2135                                   PCI_DMA_BIDIRECTIONAL);
2136         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2137                 return -ENOMEM;
2138
2139         rc = mwl8k_fw_lock(hw);
2140         if (rc) {
2141                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2142                                                 PCI_DMA_BIDIRECTIONAL);
2143                 return rc;
2144         }
2145
2146         priv->hostcmd_wait = &cmd_wait;
2147         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2148         iowrite32(MWL8K_H2A_INT_DOORBELL,
2149                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2150         iowrite32(MWL8K_H2A_INT_DUMMY,
2151                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2152
2153         timeout = wait_for_completion_timeout(&cmd_wait,
2154                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2155
2156         priv->hostcmd_wait = NULL;
2157
2158         mwl8k_fw_unlock(hw);
2159
2160         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2161                                         PCI_DMA_BIDIRECTIONAL);
2162
2163         if (!timeout) {
2164                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2165                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2166                           MWL8K_CMD_TIMEOUT_MS);
2167                 rc = -ETIMEDOUT;
2168         } else {
2169                 int ms;
2170
2171                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2172
2173                 rc = cmd->result ? -EINVAL : 0;
2174                 if (rc)
2175                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2176                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2177                                   le16_to_cpu(cmd->result));
2178                 else if (ms > 2000)
2179                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2180                                      mwl8k_cmd_name(cmd->code,
2181                                                     buf, sizeof(buf)),
2182                                      ms);
2183         }
2184
2185         return rc;
2186 }
2187
2188 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2189                                  struct ieee80211_vif *vif,
2190                                  struct mwl8k_cmd_pkt *cmd)
2191 {
2192         if (vif != NULL)
2193                 cmd->macid = MWL8K_VIF(vif)->macid;
2194         return mwl8k_post_cmd(hw, cmd);
2195 }
2196
2197 /*
2198  * Setup code shared between STA and AP firmware images.
2199  */
2200 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2201 {
2202         struct mwl8k_priv *priv = hw->priv;
2203
2204         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2205         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2206
2207         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2208         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2209
2210         priv->band_24.band = IEEE80211_BAND_2GHZ;
2211         priv->band_24.channels = priv->channels_24;
2212         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2213         priv->band_24.bitrates = priv->rates_24;
2214         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2215
2216         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2217 }
2218
2219 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2220 {
2221         struct mwl8k_priv *priv = hw->priv;
2222
2223         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2224         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2225
2226         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2227         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2228
2229         priv->band_50.band = IEEE80211_BAND_5GHZ;
2230         priv->band_50.channels = priv->channels_50;
2231         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2232         priv->band_50.bitrates = priv->rates_50;
2233         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2234
2235         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2236 }
2237
2238 /*
2239  * CMD_GET_HW_SPEC (STA version).
2240  */
2241 struct mwl8k_cmd_get_hw_spec_sta {
2242         struct mwl8k_cmd_pkt header;
2243         __u8 hw_rev;
2244         __u8 host_interface;
2245         __le16 num_mcaddrs;
2246         __u8 perm_addr[ETH_ALEN];
2247         __le16 region_code;
2248         __le32 fw_rev;
2249         __le32 ps_cookie;
2250         __le32 caps;
2251         __u8 mcs_bitmap[16];
2252         __le32 rx_queue_ptr;
2253         __le32 num_tx_queues;
2254         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2255         __le32 caps2;
2256         __le32 num_tx_desc_per_queue;
2257         __le32 total_rxd;
2258 } __packed;
2259
2260 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2261 #define MWL8K_CAP_GREENFIELD            0x08000000
2262 #define MWL8K_CAP_AMPDU                 0x04000000
2263 #define MWL8K_CAP_RX_STBC               0x01000000
2264 #define MWL8K_CAP_TX_STBC               0x00800000
2265 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2266 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2267 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2268 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2269 #define MWL8K_CAP_DELAY_BA              0x00003000
2270 #define MWL8K_CAP_MIMO                  0x00000200
2271 #define MWL8K_CAP_40MHZ                 0x00000100
2272 #define MWL8K_CAP_BAND_MASK             0x00000007
2273 #define MWL8K_CAP_5GHZ                  0x00000004
2274 #define MWL8K_CAP_2GHZ4                 0x00000001
2275
2276 static void
2277 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2278                   struct ieee80211_supported_band *band, u32 cap)
2279 {
2280         int rx_streams;
2281         int tx_streams;
2282
2283         band->ht_cap.ht_supported = 1;
2284
2285         if (cap & MWL8K_CAP_MAX_AMSDU)
2286                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2287         if (cap & MWL8K_CAP_GREENFIELD)
2288                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2289         if (cap & MWL8K_CAP_AMPDU) {
2290                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2291                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2292                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2293         }
2294         if (cap & MWL8K_CAP_RX_STBC)
2295                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2296         if (cap & MWL8K_CAP_TX_STBC)
2297                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2298         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2299                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2300         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2301                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2302         if (cap & MWL8K_CAP_DELAY_BA)
2303                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2304         if (cap & MWL8K_CAP_40MHZ)
2305                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2306
2307         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2308         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2309
2310         band->ht_cap.mcs.rx_mask[0] = 0xff;
2311         if (rx_streams >= 2)
2312                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2313         if (rx_streams >= 3)
2314                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2315         band->ht_cap.mcs.rx_mask[4] = 0x01;
2316         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2317
2318         if (rx_streams != tx_streams) {
2319                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2320                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2321                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2322         }
2323 }
2324
2325 static void
2326 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2327 {
2328         struct mwl8k_priv *priv = hw->priv;
2329
2330         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2331                 mwl8k_setup_2ghz_band(hw);
2332                 if (caps & MWL8K_CAP_MIMO)
2333                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2334         }
2335
2336         if (caps & MWL8K_CAP_5GHZ) {
2337                 mwl8k_setup_5ghz_band(hw);
2338                 if (caps & MWL8K_CAP_MIMO)
2339                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2340         }
2341 }
2342
2343 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2344 {
2345         struct mwl8k_priv *priv = hw->priv;
2346         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2347         int rc;
2348         int i;
2349
2350         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2351         if (cmd == NULL)
2352                 return -ENOMEM;
2353
2354         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2355         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2356
2357         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2358         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2359         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2360         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2361         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2362                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2363         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2364         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2365
2366         rc = mwl8k_post_cmd(hw, &cmd->header);
2367
2368         if (!rc) {
2369                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2370                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2371                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2372                 priv->hw_rev = cmd->hw_rev;
2373                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2374                 priv->ap_macids_supported = 0x00000000;
2375                 priv->sta_macids_supported = 0x00000001;
2376         }
2377
2378         kfree(cmd);
2379         return rc;
2380 }
2381
2382 /*
2383  * CMD_GET_HW_SPEC (AP version).
2384  */
2385 struct mwl8k_cmd_get_hw_spec_ap {
2386         struct mwl8k_cmd_pkt header;
2387         __u8 hw_rev;
2388         __u8 host_interface;
2389         __le16 num_wcb;
2390         __le16 num_mcaddrs;
2391         __u8 perm_addr[ETH_ALEN];
2392         __le16 region_code;
2393         __le16 num_antenna;
2394         __le32 fw_rev;
2395         __le32 wcbbase0;
2396         __le32 rxwrptr;
2397         __le32 rxrdptr;
2398         __le32 ps_cookie;
2399         __le32 wcbbase1;
2400         __le32 wcbbase2;
2401         __le32 wcbbase3;
2402         __le32 fw_api_version;
2403         __le32 caps;
2404         __le32 num_of_ampdu_queues;
2405         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2406 } __packed;
2407
2408 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2409 {
2410         struct mwl8k_priv *priv = hw->priv;
2411         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2412         int rc, i;
2413         u32 api_version;
2414
2415         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2416         if (cmd == NULL)
2417                 return -ENOMEM;
2418
2419         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2420         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2421
2422         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2423         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2424
2425         rc = mwl8k_post_cmd(hw, &cmd->header);
2426
2427         if (!rc) {
2428                 int off;
2429
2430                 api_version = le32_to_cpu(cmd->fw_api_version);
2431                 if (priv->device_info->fw_api_ap != api_version) {
2432                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2433                                "  Expected %d got %d.\n", MWL8K_NAME,
2434                                priv->device_info->part_name,
2435                                priv->device_info->fw_api_ap,
2436                                api_version);
2437                         rc = -EINVAL;
2438                         goto done;
2439                 }
2440                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2441                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2442                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2443                 priv->hw_rev = cmd->hw_rev;
2444                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2445                 priv->ap_macids_supported = 0x000000ff;
2446                 priv->sta_macids_supported = 0x00000000;
2447                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2448                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2449                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2450                                    " but we only support %d.\n",
2451                                    priv->num_ampdu_queues,
2452                                    MWL8K_MAX_AMPDU_QUEUES);
2453                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2454                 }
2455                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2456                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2457
2458                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2459                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2460
2461                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2462                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2463                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2464                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2465
2466                 for (i = 0; i < priv->num_ampdu_queues; i++)
2467                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2468                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2469         }
2470
2471 done:
2472         kfree(cmd);
2473         return rc;
2474 }
2475
2476 /*
2477  * CMD_SET_HW_SPEC.
2478  */
2479 struct mwl8k_cmd_set_hw_spec {
2480         struct mwl8k_cmd_pkt header;
2481         __u8 hw_rev;
2482         __u8 host_interface;
2483         __le16 num_mcaddrs;
2484         __u8 perm_addr[ETH_ALEN];
2485         __le16 region_code;
2486         __le32 fw_rev;
2487         __le32 ps_cookie;
2488         __le32 caps;
2489         __le32 rx_queue_ptr;
2490         __le32 num_tx_queues;
2491         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2492         __le32 flags;
2493         __le32 num_tx_desc_per_queue;
2494         __le32 total_rxd;
2495 } __packed;
2496
2497 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2498  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2499  * the packets that are queued for more than 500ms, will be dropped in the
2500  * hardware. This helps minimizing the issues caused due to head-of-line
2501  * blocking where a slow client can hog the bandwidth and affect traffic to a
2502  * faster client.
2503  */
2504 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2505 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR        0x00000200
2506 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2507 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2508 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2509
2510 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2511 {
2512         struct mwl8k_priv *priv = hw->priv;
2513         struct mwl8k_cmd_set_hw_spec *cmd;
2514         int rc;
2515         int i;
2516
2517         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2518         if (cmd == NULL)
2519                 return -ENOMEM;
2520
2521         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2522         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2523
2524         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2525         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2526         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2527
2528         /*
2529          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2530          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2531          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2532          * priority is interpreted the right way in firmware.
2533          */
2534         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2535                 int j = mwl8k_tx_queues(priv) - 1 - i;
2536                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2537         }
2538
2539         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2540                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2541                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2542                                  MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2543                                  MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2544         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2545         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2546
2547         rc = mwl8k_post_cmd(hw, &cmd->header);
2548         kfree(cmd);
2549
2550         return rc;
2551 }
2552
2553 /*
2554  * CMD_MAC_MULTICAST_ADR.
2555  */
2556 struct mwl8k_cmd_mac_multicast_adr {
2557         struct mwl8k_cmd_pkt header;
2558         __le16 action;
2559         __le16 numaddr;
2560         __u8 addr[0][ETH_ALEN];
2561 };
2562
2563 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2564 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2565 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2566 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2567
2568 static struct mwl8k_cmd_pkt *
2569 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2570                               struct netdev_hw_addr_list *mc_list)
2571 {
2572         struct mwl8k_priv *priv = hw->priv;
2573         struct mwl8k_cmd_mac_multicast_adr *cmd;
2574         int size;
2575         int mc_count = 0;
2576
2577         if (mc_list)
2578                 mc_count = netdev_hw_addr_list_count(mc_list);
2579
2580         if (allmulti || mc_count > priv->num_mcaddrs) {
2581                 allmulti = 1;
2582                 mc_count = 0;
2583         }
2584
2585         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2586
2587         cmd = kzalloc(size, GFP_ATOMIC);
2588         if (cmd == NULL)
2589                 return NULL;
2590
2591         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2592         cmd->header.length = cpu_to_le16(size);
2593         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2594                                   MWL8K_ENABLE_RX_BROADCAST);
2595
2596         if (allmulti) {
2597                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2598         } else if (mc_count) {
2599                 struct netdev_hw_addr *ha;
2600                 int i = 0;
2601
2602                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2603                 cmd->numaddr = cpu_to_le16(mc_count);
2604                 netdev_hw_addr_list_for_each(ha, mc_list) {
2605                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2606                 }
2607         }
2608
2609         return &cmd->header;
2610 }
2611
2612 /*
2613  * CMD_GET_STAT.
2614  */
2615 struct mwl8k_cmd_get_stat {
2616         struct mwl8k_cmd_pkt header;
2617         __le32 stats[64];
2618 } __packed;
2619
2620 #define MWL8K_STAT_ACK_FAILURE  9
2621 #define MWL8K_STAT_RTS_FAILURE  12
2622 #define MWL8K_STAT_FCS_ERROR    24
2623 #define MWL8K_STAT_RTS_SUCCESS  11
2624
2625 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2626                               struct ieee80211_low_level_stats *stats)
2627 {
2628         struct mwl8k_cmd_get_stat *cmd;
2629         int rc;
2630
2631         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2632         if (cmd == NULL)
2633                 return -ENOMEM;
2634
2635         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2636         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2637
2638         rc = mwl8k_post_cmd(hw, &cmd->header);
2639         if (!rc) {
2640                 stats->dot11ACKFailureCount =
2641                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2642                 stats->dot11RTSFailureCount =
2643                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2644                 stats->dot11FCSErrorCount =
2645                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2646                 stats->dot11RTSSuccessCount =
2647                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2648         }
2649         kfree(cmd);
2650
2651         return rc;
2652 }
2653
2654 /*
2655  * CMD_RADIO_CONTROL.
2656  */
2657 struct mwl8k_cmd_radio_control {
2658         struct mwl8k_cmd_pkt header;
2659         __le16 action;
2660         __le16 control;
2661         __le16 radio_on;
2662 } __packed;
2663
2664 static int
2665 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2666 {
2667         struct mwl8k_priv *priv = hw->priv;
2668         struct mwl8k_cmd_radio_control *cmd;
2669         int rc;
2670
2671         if (enable == priv->radio_on && !force)
2672                 return 0;
2673
2674         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2675         if (cmd == NULL)
2676                 return -ENOMEM;
2677
2678         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2679         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2680         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2681         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2682         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2683
2684         rc = mwl8k_post_cmd(hw, &cmd->header);
2685         kfree(cmd);
2686
2687         if (!rc)
2688                 priv->radio_on = enable;
2689
2690         return rc;
2691 }
2692
2693 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2694 {
2695         return mwl8k_cmd_radio_control(hw, 0, 0);
2696 }
2697
2698 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2699 {
2700         return mwl8k_cmd_radio_control(hw, 1, 0);
2701 }
2702
2703 static int
2704 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2705 {
2706         struct mwl8k_priv *priv = hw->priv;
2707
2708         priv->radio_short_preamble = short_preamble;
2709
2710         return mwl8k_cmd_radio_control(hw, 1, 1);
2711 }
2712
2713 /*
2714  * CMD_RF_TX_POWER.
2715  */
2716 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2717
2718 struct mwl8k_cmd_rf_tx_power {
2719         struct mwl8k_cmd_pkt header;
2720         __le16 action;
2721         __le16 support_level;
2722         __le16 current_level;
2723         __le16 reserved;
2724         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2725 } __packed;
2726
2727 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2728 {
2729         struct mwl8k_cmd_rf_tx_power *cmd;
2730         int rc;
2731
2732         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2733         if (cmd == NULL)
2734                 return -ENOMEM;
2735
2736         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2737         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2738         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2739         cmd->support_level = cpu_to_le16(dBm);
2740
2741         rc = mwl8k_post_cmd(hw, &cmd->header);
2742         kfree(cmd);
2743
2744         return rc;
2745 }
2746
2747 /*
2748  * CMD_TX_POWER.
2749  */
2750 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2751
2752 struct mwl8k_cmd_tx_power {
2753         struct mwl8k_cmd_pkt header;
2754         __le16 action;
2755         __le16 band;
2756         __le16 channel;
2757         __le16 bw;
2758         __le16 sub_ch;
2759         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2760 } __packed;
2761
2762 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2763                                      struct ieee80211_conf *conf,
2764                                      unsigned short pwr)
2765 {
2766         struct ieee80211_channel *channel = conf->channel;
2767         struct mwl8k_cmd_tx_power *cmd;
2768         int rc;
2769         int i;
2770
2771         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2772         if (cmd == NULL)
2773                 return -ENOMEM;
2774
2775         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2776         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2777         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2778
2779         if (channel->band == IEEE80211_BAND_2GHZ)
2780                 cmd->band = cpu_to_le16(0x1);
2781         else if (channel->band == IEEE80211_BAND_5GHZ)
2782                 cmd->band = cpu_to_le16(0x4);
2783
2784         cmd->channel = cpu_to_le16(channel->hw_value);
2785
2786         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2787             conf->channel_type == NL80211_CHAN_HT20) {
2788                 cmd->bw = cpu_to_le16(0x2);
2789         } else {
2790                 cmd->bw = cpu_to_le16(0x4);
2791                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2792                         cmd->sub_ch = cpu_to_le16(0x3);
2793                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2794                         cmd->sub_ch = cpu_to_le16(0x1);
2795         }
2796
2797         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2798                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2799
2800         rc = mwl8k_post_cmd(hw, &cmd->header);
2801         kfree(cmd);
2802
2803         return rc;
2804 }
2805
2806 /*
2807  * CMD_RF_ANTENNA.
2808  */
2809 struct mwl8k_cmd_rf_antenna {
2810         struct mwl8k_cmd_pkt header;
2811         __le16 antenna;
2812         __le16 mode;
2813 } __packed;
2814
2815 #define MWL8K_RF_ANTENNA_RX             1
2816 #define MWL8K_RF_ANTENNA_TX             2
2817
2818 static int
2819 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2820 {
2821         struct mwl8k_cmd_rf_antenna *cmd;
2822         int rc;
2823
2824         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2825         if (cmd == NULL)
2826                 return -ENOMEM;
2827
2828         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2829         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2830         cmd->antenna = cpu_to_le16(antenna);
2831         cmd->mode = cpu_to_le16(mask);
2832
2833         rc = mwl8k_post_cmd(hw, &cmd->header);
2834         kfree(cmd);
2835
2836         return rc;
2837 }
2838
2839 /*
2840  * CMD_SET_BEACON.
2841  */
2842 struct mwl8k_cmd_set_beacon {
2843         struct mwl8k_cmd_pkt header;
2844         __le16 beacon_len;
2845         __u8 beacon[0];
2846 };
2847
2848 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2849                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2850 {
2851         struct mwl8k_cmd_set_beacon *cmd;
2852         int rc;
2853
2854         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2855         if (cmd == NULL)
2856                 return -ENOMEM;
2857
2858         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2859         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2860         cmd->beacon_len = cpu_to_le16(len);
2861         memcpy(cmd->beacon, beacon, len);
2862
2863         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2864         kfree(cmd);
2865
2866         return rc;
2867 }
2868
2869 /*
2870  * CMD_SET_PRE_SCAN.
2871  */
2872 struct mwl8k_cmd_set_pre_scan {
2873         struct mwl8k_cmd_pkt header;
2874 } __packed;
2875
2876 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2877 {
2878         struct mwl8k_cmd_set_pre_scan *cmd;
2879         int rc;
2880
2881         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2882         if (cmd == NULL)
2883                 return -ENOMEM;
2884
2885         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2886         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2887
2888         rc = mwl8k_post_cmd(hw, &cmd->header);
2889         kfree(cmd);
2890
2891         return rc;
2892 }
2893
2894 /*
2895  * CMD_SET_POST_SCAN.
2896  */
2897 struct mwl8k_cmd_set_post_scan {
2898         struct mwl8k_cmd_pkt header;
2899         __le32 isibss;
2900         __u8 bssid[ETH_ALEN];
2901 } __packed;
2902
2903 static int
2904 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2905 {
2906         struct mwl8k_cmd_set_post_scan *cmd;
2907         int rc;
2908
2909         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2910         if (cmd == NULL)
2911                 return -ENOMEM;
2912
2913         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2914         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2915         cmd->isibss = 0;
2916         memcpy(cmd->bssid, mac, ETH_ALEN);
2917
2918         rc = mwl8k_post_cmd(hw, &cmd->header);
2919         kfree(cmd);
2920
2921         return rc;
2922 }
2923
2924 /*
2925  * CMD_SET_RF_CHANNEL.
2926  */
2927 struct mwl8k_cmd_set_rf_channel {
2928         struct mwl8k_cmd_pkt header;
2929         __le16 action;
2930         __u8 current_channel;
2931         __le32 channel_flags;
2932 } __packed;
2933
2934 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2935                                     struct ieee80211_conf *conf)
2936 {
2937         struct ieee80211_channel *channel = conf->channel;
2938         struct mwl8k_cmd_set_rf_channel *cmd;
2939         int rc;
2940
2941         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2942         if (cmd == NULL)
2943                 return -ENOMEM;
2944
2945         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2946         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2947         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2948         cmd->current_channel = channel->hw_value;
2949
2950         if (channel->band == IEEE80211_BAND_2GHZ)
2951                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2952         else if (channel->band == IEEE80211_BAND_5GHZ)
2953                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2954
2955         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2956             conf->channel_type == NL80211_CHAN_HT20)
2957                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2958         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2959                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2960         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2961                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2962
2963         rc = mwl8k_post_cmd(hw, &cmd->header);
2964         kfree(cmd);
2965
2966         return rc;
2967 }
2968
2969 /*
2970  * CMD_SET_AID.
2971  */
2972 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2973 #define MWL8K_FRAME_PROT_11G                            0x07
2974 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2975 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2976
2977 struct mwl8k_cmd_update_set_aid {
2978         struct  mwl8k_cmd_pkt header;
2979         __le16  aid;
2980
2981          /* AP's MAC address (BSSID) */
2982         __u8    bssid[ETH_ALEN];
2983         __le16  protection_mode;
2984         __u8    supp_rates[14];
2985 } __packed;
2986
2987 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2988 {
2989         int i;
2990         int j;
2991
2992         /*
2993          * Clear nonstandard rates 4 and 13.
2994          */
2995         mask &= 0x1fef;
2996
2997         for (i = 0, j = 0; i < 14; i++) {
2998                 if (mask & (1 << i))
2999                         rates[j++] = mwl8k_rates_24[i].hw_value;
3000         }
3001 }
3002
3003 static int
3004 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3005                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
3006 {
3007         struct mwl8k_cmd_update_set_aid *cmd;
3008         u16 prot_mode;
3009         int rc;
3010
3011         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3012         if (cmd == NULL)
3013                 return -ENOMEM;
3014
3015         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3016         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3017         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3018         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3019
3020         if (vif->bss_conf.use_cts_prot) {
3021                 prot_mode = MWL8K_FRAME_PROT_11G;
3022         } else {
3023                 switch (vif->bss_conf.ht_operation_mode &
3024                         IEEE80211_HT_OP_MODE_PROTECTION) {
3025                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3026                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3027                         break;
3028                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3029                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3030                         break;
3031                 default:
3032                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
3033                         break;
3034                 }
3035         }
3036         cmd->protection_mode = cpu_to_le16(prot_mode);
3037
3038         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3039
3040         rc = mwl8k_post_cmd(hw, &cmd->header);
3041         kfree(cmd);
3042
3043         return rc;
3044 }
3045
3046 /*
3047  * CMD_SET_RATE.
3048  */
3049 struct mwl8k_cmd_set_rate {
3050         struct  mwl8k_cmd_pkt header;
3051         __u8    legacy_rates[14];
3052
3053         /* Bitmap for supported MCS codes.  */
3054         __u8    mcs_set[16];
3055         __u8    reserved[16];
3056 } __packed;
3057
3058 static int
3059 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3060                    u32 legacy_rate_mask, u8 *mcs_rates)
3061 {
3062         struct mwl8k_cmd_set_rate *cmd;
3063         int rc;
3064
3065         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3066         if (cmd == NULL)
3067                 return -ENOMEM;
3068
3069         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3070         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3071         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3072         memcpy(cmd->mcs_set, mcs_rates, 16);
3073
3074         rc = mwl8k_post_cmd(hw, &cmd->header);
3075         kfree(cmd);
3076
3077         return rc;
3078 }
3079
3080 /*
3081  * CMD_FINALIZE_JOIN.
3082  */
3083 #define MWL8K_FJ_BEACON_MAXLEN  128
3084
3085 struct mwl8k_cmd_finalize_join {
3086         struct mwl8k_cmd_pkt header;
3087         __le32 sleep_interval;  /* Number of beacon periods to sleep */
3088         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3089 } __packed;
3090
3091 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3092                                    int framelen, int dtim)
3093 {
3094         struct mwl8k_cmd_finalize_join *cmd;
3095         struct ieee80211_mgmt *payload = frame;
3096         int payload_len;
3097         int rc;
3098
3099         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3100         if (cmd == NULL)
3101                 return -ENOMEM;
3102
3103         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3104         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3105         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3106
3107         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3108         if (payload_len < 0)
3109                 payload_len = 0;
3110         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3111                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3112
3113         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3114
3115         rc = mwl8k_post_cmd(hw, &cmd->header);
3116         kfree(cmd);
3117
3118         return rc;
3119 }
3120
3121 /*
3122  * CMD_SET_RTS_THRESHOLD.
3123  */
3124 struct mwl8k_cmd_set_rts_threshold {
3125         struct mwl8k_cmd_pkt header;
3126         __le16 action;
3127         __le16 threshold;
3128 } __packed;
3129
3130 static int
3131 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3132 {
3133         struct mwl8k_cmd_set_rts_threshold *cmd;
3134         int rc;
3135
3136         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3137         if (cmd == NULL)
3138                 return -ENOMEM;
3139
3140         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3141         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3142         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3143         cmd->threshold = cpu_to_le16(rts_thresh);
3144
3145         rc = mwl8k_post_cmd(hw, &cmd->header);
3146         kfree(cmd);
3147
3148         return rc;
3149 }
3150
3151 /*
3152  * CMD_SET_SLOT.
3153  */
3154 struct mwl8k_cmd_set_slot {
3155         struct mwl8k_cmd_pkt header;
3156         __le16 action;
3157         __u8 short_slot;
3158 } __packed;
3159
3160 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3161 {
3162         struct mwl8k_cmd_set_slot *cmd;
3163         int rc;
3164
3165         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3166         if (cmd == NULL)
3167                 return -ENOMEM;
3168
3169         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3170         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3171         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3172         cmd->short_slot = short_slot_time;
3173
3174         rc = mwl8k_post_cmd(hw, &cmd->header);
3175         kfree(cmd);
3176
3177         return rc;
3178 }
3179
3180 /*
3181  * CMD_SET_EDCA_PARAMS.
3182  */
3183 struct mwl8k_cmd_set_edca_params {
3184         struct mwl8k_cmd_pkt header;
3185
3186         /* See MWL8K_SET_EDCA_XXX below */
3187         __le16 action;
3188
3189         /* TX opportunity in units of 32 us */
3190         __le16 txop;
3191
3192         union {
3193                 struct {
3194                         /* Log exponent of max contention period: 0...15 */
3195                         __le32 log_cw_max;
3196
3197                         /* Log exponent of min contention period: 0...15 */
3198                         __le32 log_cw_min;
3199
3200                         /* Adaptive interframe spacing in units of 32us */
3201                         __u8 aifs;
3202
3203                         /* TX queue to configure */
3204                         __u8 txq;
3205                 } ap;
3206                 struct {
3207                         /* Log exponent of max contention period: 0...15 */
3208                         __u8 log_cw_max;
3209
3210                         /* Log exponent of min contention period: 0...15 */
3211                         __u8 log_cw_min;
3212
3213                         /* Adaptive interframe spacing in units of 32us */
3214                         __u8 aifs;
3215
3216                         /* TX queue to configure */
3217                         __u8 txq;
3218                 } sta;
3219         };
3220 } __packed;
3221
3222 #define MWL8K_SET_EDCA_CW       0x01
3223 #define MWL8K_SET_EDCA_TXOP     0x02
3224 #define MWL8K_SET_EDCA_AIFS     0x04
3225
3226 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3227                                  MWL8K_SET_EDCA_TXOP | \
3228                                  MWL8K_SET_EDCA_AIFS)
3229
3230 static int
3231 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3232                           __u16 cw_min, __u16 cw_max,
3233                           __u8 aifs, __u16 txop)
3234 {
3235         struct mwl8k_priv *priv = hw->priv;
3236         struct mwl8k_cmd_set_edca_params *cmd;
3237         int rc;
3238
3239         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3240         if (cmd == NULL)
3241                 return -ENOMEM;
3242
3243         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3244         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3245         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3246         cmd->txop = cpu_to_le16(txop);
3247         if (priv->ap_fw) {
3248                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3249                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3250                 cmd->ap.aifs = aifs;
3251                 cmd->ap.txq = qnum;
3252         } else {
3253                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3254                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3255                 cmd->sta.aifs = aifs;
3256                 cmd->sta.txq = qnum;
3257         }
3258
3259         rc = mwl8k_post_cmd(hw, &cmd->header);
3260         kfree(cmd);
3261
3262         return rc;
3263 }
3264
3265 /*
3266  * CMD_SET_WMM_MODE.
3267  */
3268 struct mwl8k_cmd_set_wmm_mode {
3269         struct mwl8k_cmd_pkt header;
3270         __le16 action;
3271 } __packed;
3272
3273 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3274 {
3275         struct mwl8k_priv *priv = hw->priv;
3276         struct mwl8k_cmd_set_wmm_mode *cmd;
3277         int rc;
3278
3279         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3280         if (cmd == NULL)
3281                 return -ENOMEM;
3282
3283         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3284         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3285         cmd->action = cpu_to_le16(!!enable);
3286
3287         rc = mwl8k_post_cmd(hw, &cmd->header);
3288         kfree(cmd);
3289
3290         if (!rc)
3291                 priv->wmm_enabled = enable;
3292
3293         return rc;
3294 }
3295
3296 /*
3297  * CMD_MIMO_CONFIG.
3298  */
3299 struct mwl8k_cmd_mimo_config {
3300         struct mwl8k_cmd_pkt header;
3301         __le32 action;
3302         __u8 rx_antenna_map;
3303         __u8 tx_antenna_map;
3304 } __packed;
3305
3306 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3307 {
3308         struct mwl8k_cmd_mimo_config *cmd;
3309         int rc;
3310
3311         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3312         if (cmd == NULL)
3313                 return -ENOMEM;
3314
3315         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3316         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3317         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3318         cmd->rx_antenna_map = rx;
3319         cmd->tx_antenna_map = tx;
3320
3321         rc = mwl8k_post_cmd(hw, &cmd->header);
3322         kfree(cmd);
3323
3324         return rc;
3325 }
3326
3327 /*
3328  * CMD_USE_FIXED_RATE (STA version).
3329  */
3330 struct mwl8k_cmd_use_fixed_rate_sta {
3331         struct mwl8k_cmd_pkt header;
3332         __le32 action;
3333         __le32 allow_rate_drop;
3334         __le32 num_rates;
3335         struct {
3336                 __le32 is_ht_rate;
3337                 __le32 enable_retry;
3338                 __le32 rate;
3339                 __le32 retry_count;
3340         } rate_entry[8];
3341         __le32 rate_type;
3342         __le32 reserved1;
3343         __le32 reserved2;
3344 } __packed;
3345
3346 #define MWL8K_USE_AUTO_RATE     0x0002
3347 #define MWL8K_UCAST_RATE        0
3348
3349 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3350 {
3351         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3352         int rc;
3353
3354         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3355         if (cmd == NULL)
3356                 return -ENOMEM;
3357
3358         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3359         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3360         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3361         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3362
3363         rc = mwl8k_post_cmd(hw, &cmd->header);
3364         kfree(cmd);
3365
3366         return rc;
3367 }
3368
3369 /*
3370  * CMD_USE_FIXED_RATE (AP version).
3371  */
3372 struct mwl8k_cmd_use_fixed_rate_ap {
3373         struct mwl8k_cmd_pkt header;
3374         __le32 action;
3375         __le32 allow_rate_drop;
3376         __le32 num_rates;
3377         struct mwl8k_rate_entry_ap {
3378                 __le32 is_ht_rate;
3379                 __le32 enable_retry;
3380                 __le32 rate;
3381                 __le32 retry_count;
3382         } rate_entry[4];
3383         u8 multicast_rate;
3384         u8 multicast_rate_type;
3385         u8 management_rate;
3386 } __packed;
3387
3388 static int
3389 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3390 {
3391         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3392         int rc;
3393
3394         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3395         if (cmd == NULL)
3396                 return -ENOMEM;
3397
3398         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3399         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3400         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3401         cmd->multicast_rate = mcast;
3402         cmd->management_rate = mgmt;
3403
3404         rc = mwl8k_post_cmd(hw, &cmd->header);
3405         kfree(cmd);
3406
3407         return rc;
3408 }
3409
3410 /*
3411  * CMD_ENABLE_SNIFFER.
3412  */
3413 struct mwl8k_cmd_enable_sniffer {
3414         struct mwl8k_cmd_pkt header;
3415         __le32 action;
3416 } __packed;
3417
3418 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3419 {
3420         struct mwl8k_cmd_enable_sniffer *cmd;
3421         int rc;
3422
3423         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3424         if (cmd == NULL)
3425                 return -ENOMEM;
3426
3427         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3428         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3429         cmd->action = cpu_to_le32(!!enable);
3430
3431         rc = mwl8k_post_cmd(hw, &cmd->header);
3432         kfree(cmd);
3433
3434         return rc;
3435 }
3436
3437 struct mwl8k_cmd_update_mac_addr {
3438         struct mwl8k_cmd_pkt header;
3439         union {
3440                 struct {
3441                         __le16 mac_type;
3442                         __u8 mac_addr[ETH_ALEN];
3443                 } mbss;
3444                 __u8 mac_addr[ETH_ALEN];
3445         };
3446 } __packed;
3447
3448 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3449 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3450 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3451 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3452
3453 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3454                                   struct ieee80211_vif *vif, u8 *mac, bool set)
3455 {
3456         struct mwl8k_priv *priv = hw->priv;
3457         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3458         struct mwl8k_cmd_update_mac_addr *cmd;
3459         int mac_type;
3460         int rc;
3461
3462         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3463         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3464                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3465                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3466                 else
3467                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3468         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3469                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3470                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3471                 else
3472                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3473         }
3474
3475         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3476         if (cmd == NULL)
3477                 return -ENOMEM;
3478
3479         if (set)
3480                 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3481         else
3482                 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3483
3484         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3485         if (priv->ap_fw) {
3486                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3487                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3488         } else {
3489                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3490         }
3491
3492         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3493         kfree(cmd);
3494
3495         return rc;
3496 }
3497
3498 /*
3499  * MWL8K_CMD_SET_MAC_ADDR.
3500  */
3501 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3502                                   struct ieee80211_vif *vif, u8 *mac)
3503 {
3504         return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3505 }
3506
3507 /*
3508  * MWL8K_CMD_DEL_MAC_ADDR.
3509  */
3510 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3511                                   struct ieee80211_vif *vif, u8 *mac)
3512 {
3513         return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3514 }
3515
3516 /*
3517  * CMD_SET_RATEADAPT_MODE.
3518  */
3519 struct mwl8k_cmd_set_rate_adapt_mode {
3520         struct mwl8k_cmd_pkt header;
3521         __le16 action;
3522         __le16 mode;
3523 } __packed;
3524
3525 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3526 {
3527         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3528         int rc;
3529
3530         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3531         if (cmd == NULL)
3532                 return -ENOMEM;
3533
3534         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3535         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3536         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3537         cmd->mode = cpu_to_le16(mode);
3538
3539         rc = mwl8k_post_cmd(hw, &cmd->header);
3540         kfree(cmd);
3541
3542         return rc;
3543 }
3544
3545 /*
3546  * CMD_GET_WATCHDOG_BITMAP.
3547  */
3548 struct mwl8k_cmd_get_watchdog_bitmap {
3549         struct mwl8k_cmd_pkt header;
3550         u8      bitmap;
3551 } __packed;
3552
3553 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3554 {
3555         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3556         int rc;
3557
3558         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3559         if (cmd == NULL)
3560                 return -ENOMEM;
3561
3562         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3563         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3564
3565         rc = mwl8k_post_cmd(hw, &cmd->header);
3566         if (!rc)
3567                 *bitmap = cmd->bitmap;
3568
3569         kfree(cmd);
3570
3571         return rc;
3572 }
3573
3574 #define INVALID_BA      0xAA
3575 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3576 {
3577         int rc;
3578         u8 bitmap = 0, stream_index;
3579         struct mwl8k_ampdu_stream *streams;
3580         struct mwl8k_priv *priv =
3581                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3582
3583         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3584         if (rc)
3585                 return;
3586
3587         if (bitmap == INVALID_BA)
3588                 return;
3589
3590         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3591         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3592
3593         BUG_ON(stream_index >= priv->num_ampdu_queues);
3594
3595         streams = &priv->ampdu[stream_index];
3596
3597         if (streams->state == AMPDU_STREAM_ACTIVE)
3598                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3599
3600         return;
3601 }
3602
3603
3604 /*
3605  * CMD_BSS_START.
3606  */
3607 struct mwl8k_cmd_bss_start {
3608         struct mwl8k_cmd_pkt header;
3609         __le32 enable;
3610 } __packed;
3611
3612 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3613                                struct ieee80211_vif *vif, int enable)
3614 {
3615         struct mwl8k_cmd_bss_start *cmd;
3616         int rc;
3617
3618         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3619         if (cmd == NULL)
3620                 return -ENOMEM;
3621
3622         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3623         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3624         cmd->enable = cpu_to_le32(enable);
3625
3626         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3627         kfree(cmd);
3628
3629         return rc;
3630 }
3631
3632 /*
3633  * CMD_BASTREAM.
3634  */
3635
3636 /*
3637  * UPSTREAM is tx direction
3638  */
3639 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3640 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3641
3642 enum ba_stream_action_type {
3643         MWL8K_BA_CREATE,
3644         MWL8K_BA_UPDATE,
3645         MWL8K_BA_DESTROY,
3646         MWL8K_BA_FLUSH,
3647         MWL8K_BA_CHECK,
3648 };
3649
3650
3651 struct mwl8k_create_ba_stream {
3652         __le32  flags;
3653         __le32  idle_thrs;
3654         __le32  bar_thrs;
3655         __le32  window_size;
3656         u8      peer_mac_addr[6];
3657         u8      dialog_token;
3658         u8      tid;
3659         u8      queue_id;
3660         u8      param_info;
3661         __le32  ba_context;
3662         u8      reset_seq_no_flag;
3663         __le16  curr_seq_no;
3664         u8      sta_src_mac_addr[6];
3665 } __packed;
3666
3667 struct mwl8k_destroy_ba_stream {
3668         __le32  flags;
3669         __le32  ba_context;
3670 } __packed;
3671
3672 struct mwl8k_cmd_bastream {
3673         struct mwl8k_cmd_pkt    header;
3674         __le32  action;
3675         union {
3676                 struct mwl8k_create_ba_stream   create_params;
3677                 struct mwl8k_destroy_ba_stream  destroy_params;
3678         };
3679 } __packed;
3680
3681 static int
3682 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3683 {
3684         struct mwl8k_cmd_bastream *cmd;
3685         int rc;
3686
3687         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3688         if (cmd == NULL)
3689                 return -ENOMEM;
3690
3691         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3692         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3693
3694         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3695
3696         cmd->create_params.queue_id = stream->idx;
3697         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3698                ETH_ALEN);
3699         cmd->create_params.tid = stream->tid;
3700
3701         cmd->create_params.flags =
3702                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3703                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3704
3705         rc = mwl8k_post_cmd(hw, &cmd->header);
3706
3707         kfree(cmd);
3708
3709         return rc;
3710 }
3711
3712 static int
3713 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3714                 u8 buf_size)
3715 {
3716         struct mwl8k_cmd_bastream *cmd;
3717         int rc;
3718
3719         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3720         if (cmd == NULL)
3721                 return -ENOMEM;
3722
3723
3724         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3725         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3726
3727         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3728
3729         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3730         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3731         cmd->create_params.queue_id = stream->idx;
3732
3733         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3734         cmd->create_params.tid = stream->tid;
3735         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3736         cmd->create_params.reset_seq_no_flag = 1;
3737
3738         cmd->create_params.param_info =
3739                 (stream->sta->ht_cap.ampdu_factor &
3740                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3741                 ((stream->sta->ht_cap.ampdu_density << 2) &
3742                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3743
3744         cmd->create_params.flags =
3745                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3746                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3747
3748         rc = mwl8k_post_cmd(hw, &cmd->header);
3749
3750         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3751                 stream->sta->addr, stream->tid);
3752         kfree(cmd);
3753
3754         return rc;
3755 }
3756
3757 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3758                              struct mwl8k_ampdu_stream *stream)
3759 {
3760         struct mwl8k_cmd_bastream *cmd;
3761
3762         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3763         if (cmd == NULL)
3764                 return;
3765
3766         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3767         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3768         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3769
3770         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3771         mwl8k_post_cmd(hw, &cmd->header);
3772
3773         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3774
3775         kfree(cmd);
3776 }
3777
3778 /*
3779  * CMD_SET_NEW_STN.
3780  */
3781 struct mwl8k_cmd_set_new_stn {
3782         struct mwl8k_cmd_pkt header;
3783         __le16 aid;
3784         __u8 mac_addr[6];
3785         __le16 stn_id;
3786         __le16 action;
3787         __le16 rsvd;
3788         __le32 legacy_rates;
3789         __u8 ht_rates[4];
3790         __le16 cap_info;
3791         __le16 ht_capabilities_info;
3792         __u8 mac_ht_param_info;
3793         __u8 rev;
3794         __u8 control_channel;
3795         __u8 add_channel;
3796         __le16 op_mode;
3797         __le16 stbc;
3798         __u8 add_qos_info;
3799         __u8 is_qos_sta;
3800         __le32 fw_sta_ptr;
3801 } __packed;
3802
3803 #define MWL8K_STA_ACTION_ADD            0
3804 #define MWL8K_STA_ACTION_REMOVE         2
3805
3806 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3807                                      struct ieee80211_vif *vif,
3808                                      struct ieee80211_sta *sta)
3809 {
3810         struct mwl8k_cmd_set_new_stn *cmd;
3811         u32 rates;
3812         int rc;
3813
3814         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3815         if (cmd == NULL)
3816                 return -ENOMEM;
3817
3818         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3819         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3820         cmd->aid = cpu_to_le16(sta->aid);
3821         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3822         cmd->stn_id = cpu_to_le16(sta->aid);
3823         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3824         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3825                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3826         else
3827                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3828         cmd->legacy_rates = cpu_to_le32(rates);
3829         if (sta->ht_cap.ht_supported) {
3830                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3831                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3832                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3833                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3834                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3835                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3836                         ((sta->ht_cap.ampdu_density & 7) << 2);
3837                 cmd->is_qos_sta = 1;
3838         }
3839
3840         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3841         kfree(cmd);
3842
3843         return rc;
3844 }
3845
3846 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3847                                           struct ieee80211_vif *vif)
3848 {
3849         struct mwl8k_cmd_set_new_stn *cmd;
3850         int rc;
3851
3852         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3853         if (cmd == NULL)
3854                 return -ENOMEM;
3855
3856         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3857         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3858         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3859
3860         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3861         kfree(cmd);
3862
3863         return rc;
3864 }
3865
3866 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3867                                      struct ieee80211_vif *vif, u8 *addr)
3868 {
3869         struct mwl8k_cmd_set_new_stn *cmd;
3870         int rc;
3871
3872         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3873         if (cmd == NULL)
3874                 return -ENOMEM;
3875
3876         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3877         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3878         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3879         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3880
3881         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3882         kfree(cmd);
3883
3884         return rc;
3885 }
3886
3887 /*
3888  * CMD_UPDATE_ENCRYPTION.
3889  */
3890
3891 #define MAX_ENCR_KEY_LENGTH     16
3892 #define MIC_KEY_LENGTH          8
3893
3894 struct mwl8k_cmd_update_encryption {
3895         struct mwl8k_cmd_pkt header;
3896
3897         __le32 action;
3898         __le32 reserved;
3899         __u8 mac_addr[6];
3900         __u8 encr_type;
3901
3902 } __packed;
3903
3904 struct mwl8k_cmd_set_key {
3905         struct mwl8k_cmd_pkt header;
3906
3907         __le32 action;
3908         __le32 reserved;
3909         __le16 length;
3910         __le16 key_type_id;
3911         __le32 key_info;
3912         __le32 key_id;
3913         __le16 key_len;
3914         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3915         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3916         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3917         __le16 tkip_rsc_low;
3918         __le32 tkip_rsc_high;
3919         __le16 tkip_tsc_low;
3920         __le32 tkip_tsc_high;
3921         __u8 mac_addr[6];
3922 } __packed;
3923
3924 enum {
3925         MWL8K_ENCR_ENABLE,
3926         MWL8K_ENCR_SET_KEY,
3927         MWL8K_ENCR_REMOVE_KEY,
3928         MWL8K_ENCR_SET_GROUP_KEY,
3929 };
3930
3931 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3932 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3933 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3934 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3935 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3936
3937 enum {
3938         MWL8K_ALG_WEP,
3939         MWL8K_ALG_TKIP,
3940         MWL8K_ALG_CCMP,
3941 };
3942
3943 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3944 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3945 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3946 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3947 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3948
3949 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3950                                               struct ieee80211_vif *vif,
3951                                               u8 *addr,
3952                                               u8 encr_type)
3953 {
3954         struct mwl8k_cmd_update_encryption *cmd;
3955         int rc;
3956
3957         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3958         if (cmd == NULL)
3959                 return -ENOMEM;
3960
3961         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3962         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3963         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3964         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3965         cmd->encr_type = encr_type;
3966
3967         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3968         kfree(cmd);
3969
3970         return rc;
3971 }
3972
3973 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3974                                                 u8 *addr,
3975                                                 struct ieee80211_key_conf *key)
3976 {
3977         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3978         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3979         cmd->length = cpu_to_le16(sizeof(*cmd) -
3980                                 offsetof(struct mwl8k_cmd_set_key, length));
3981         cmd->key_id = cpu_to_le32(key->keyidx);
3982         cmd->key_len = cpu_to_le16(key->keylen);
3983         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3984
3985         switch (key->cipher) {
3986         case WLAN_CIPHER_SUITE_WEP40:
3987         case WLAN_CIPHER_SUITE_WEP104:
3988                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3989                 if (key->keyidx == 0)
3990                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3991
3992                 break;
3993         case WLAN_CIPHER_SUITE_TKIP:
3994                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3995                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3996                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3997                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3998                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3999                                                 | MWL8K_KEY_FLAG_TSC_VALID);
4000                 break;
4001         case WLAN_CIPHER_SUITE_CCMP:
4002                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4003                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4004                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4005                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4006                 break;
4007         default:
4008                 return -ENOTSUPP;
4009         }
4010
4011         return 0;
4012 }
4013
4014 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4015                                                 struct ieee80211_vif *vif,
4016                                                 u8 *addr,
4017                                                 struct ieee80211_key_conf *key)
4018 {
4019         struct mwl8k_cmd_set_key *cmd;
4020         int rc;
4021         int keymlen;
4022         u32 action;
4023         u8 idx;
4024         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4025
4026         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4027         if (cmd == NULL)
4028                 return -ENOMEM;
4029
4030         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4031         if (rc < 0)
4032                 goto done;
4033
4034         idx = key->keyidx;
4035
4036         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4037                 action = MWL8K_ENCR_SET_KEY;
4038         else
4039                 action = MWL8K_ENCR_SET_GROUP_KEY;
4040
4041         switch (key->cipher) {
4042         case WLAN_CIPHER_SUITE_WEP40:
4043         case WLAN_CIPHER_SUITE_WEP104:
4044                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4045                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4046                                                 sizeof(*key) + key->keylen);
4047                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
4048                 }
4049
4050                 keymlen = key->keylen;
4051                 action = MWL8K_ENCR_SET_KEY;
4052                 break;
4053         case WLAN_CIPHER_SUITE_TKIP:
4054                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4055                 break;
4056         case WLAN_CIPHER_SUITE_CCMP:
4057                 keymlen = key->keylen;
4058                 break;
4059         default:
4060                 rc = -ENOTSUPP;
4061                 goto done;
4062         }
4063
4064         memcpy(cmd->key_material, key->key, keymlen);
4065         cmd->action = cpu_to_le32(action);
4066
4067         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4068 done:
4069         kfree(cmd);
4070
4071         return rc;
4072 }
4073
4074 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4075                                                 struct ieee80211_vif *vif,
4076                                                 u8 *addr,
4077                                                 struct ieee80211_key_conf *key)
4078 {
4079         struct mwl8k_cmd_set_key *cmd;
4080         int rc;
4081         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4082
4083         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4084         if (cmd == NULL)
4085                 return -ENOMEM;
4086
4087         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4088         if (rc < 0)
4089                 goto done;
4090
4091         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4092                         key->cipher == WLAN_CIPHER_SUITE_WEP104)
4093                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4094
4095         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4096
4097         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4098 done:
4099         kfree(cmd);
4100
4101         return rc;
4102 }
4103
4104 static int mwl8k_set_key(struct ieee80211_hw *hw,
4105                          enum set_key_cmd cmd_param,
4106                          struct ieee80211_vif *vif,
4107                          struct ieee80211_sta *sta,
4108                          struct ieee80211_key_conf *key)
4109 {
4110         int rc = 0;
4111         u8 encr_type;
4112         u8 *addr;
4113         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4114
4115         if (vif->type == NL80211_IFTYPE_STATION)
4116                 return -EOPNOTSUPP;
4117
4118         if (sta == NULL)
4119                 addr = vif->addr;
4120         else
4121                 addr = sta->addr;
4122
4123         if (cmd_param == SET_KEY) {
4124                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4125                 if (rc)
4126                         goto out;
4127
4128                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4129                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4130                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4131                 else
4132                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4133
4134                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4135                                                                 encr_type);
4136                 if (rc)
4137                         goto out;
4138
4139                 mwl8k_vif->is_hw_crypto_enabled = true;
4140
4141         } else {
4142                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4143
4144                 if (rc)
4145                         goto out;
4146         }
4147 out:
4148         return rc;
4149 }
4150
4151 /*
4152  * CMD_UPDATE_STADB.
4153  */
4154 struct ewc_ht_info {
4155         __le16  control1;
4156         __le16  control2;
4157         __le16  control3;
4158 } __packed;
4159
4160 struct peer_capability_info {
4161         /* Peer type - AP vs. STA.  */
4162         __u8    peer_type;
4163
4164         /* Basic 802.11 capabilities from assoc resp.  */
4165         __le16  basic_caps;
4166
4167         /* Set if peer supports 802.11n high throughput (HT).  */
4168         __u8    ht_support;
4169
4170         /* Valid if HT is supported.  */
4171         __le16  ht_caps;
4172         __u8    extended_ht_caps;
4173         struct ewc_ht_info      ewc_info;
4174
4175         /* Legacy rate table. Intersection of our rates and peer rates.  */
4176         __u8    legacy_rates[12];
4177
4178         /* HT rate table. Intersection of our rates and peer rates.  */
4179         __u8    ht_rates[16];
4180         __u8    pad[16];
4181
4182         /* If set, interoperability mode, no proprietary extensions.  */
4183         __u8    interop;
4184         __u8    pad2;
4185         __u8    station_id;
4186         __le16  amsdu_enabled;
4187 } __packed;
4188
4189 struct mwl8k_cmd_update_stadb {
4190         struct mwl8k_cmd_pkt header;
4191
4192         /* See STADB_ACTION_TYPE */
4193         __le32  action;
4194
4195         /* Peer MAC address */
4196         __u8    peer_addr[ETH_ALEN];
4197
4198         __le32  reserved;
4199
4200         /* Peer info - valid during add/update.  */
4201         struct peer_capability_info     peer_info;
4202 } __packed;
4203
4204 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4205 #define MWL8K_STA_DB_DEL_ENTRY          2
4206
4207 /* Peer Entry flags - used to define the type of the peer node */
4208 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4209
4210 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4211                                       struct ieee80211_vif *vif,
4212                                       struct ieee80211_sta *sta)
4213 {
4214         struct mwl8k_cmd_update_stadb *cmd;
4215         struct peer_capability_info *p;
4216         u32 rates;
4217         int rc;
4218
4219         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4220         if (cmd == NULL)
4221                 return -ENOMEM;
4222
4223         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4224         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4225         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4226         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4227
4228         p = &cmd->peer_info;
4229         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4230         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4231         p->ht_support = sta->ht_cap.ht_supported;
4232         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4233         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4234                 ((sta->ht_cap.ampdu_density & 7) << 2);
4235         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4236                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4237         else
4238                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4239         legacy_rate_mask_to_array(p->legacy_rates, rates);
4240         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4241         p->interop = 1;
4242         p->amsdu_enabled = 0;
4243
4244         rc = mwl8k_post_cmd(hw, &cmd->header);
4245         kfree(cmd);
4246
4247         return rc ? rc : p->station_id;
4248 }
4249
4250 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4251                                       struct ieee80211_vif *vif, u8 *addr)
4252 {
4253         struct mwl8k_cmd_update_stadb *cmd;
4254         int rc;
4255
4256         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4257         if (cmd == NULL)
4258                 return -ENOMEM;
4259
4260         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4261         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4262         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4263         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4264
4265         rc = mwl8k_post_cmd(hw, &cmd->header);
4266         kfree(cmd);
4267
4268         return rc;
4269 }
4270
4271
4272 /*
4273  * Interrupt handling.
4274  */
4275 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4276 {
4277         struct ieee80211_hw *hw = dev_id;
4278         struct mwl8k_priv *priv = hw->priv;
4279         u32 status;
4280
4281         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4282         if (!status)
4283                 return IRQ_NONE;
4284
4285         if (status & MWL8K_A2H_INT_TX_DONE) {
4286                 status &= ~MWL8K_A2H_INT_TX_DONE;
4287                 tasklet_schedule(&priv->poll_tx_task);
4288         }
4289
4290         if (status & MWL8K_A2H_INT_RX_READY) {
4291                 status &= ~MWL8K_A2H_INT_RX_READY;
4292                 tasklet_schedule(&priv->poll_rx_task);
4293         }
4294
4295         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4296                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4297                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4298         }
4299
4300         if (status)
4301                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4302
4303         if (status & MWL8K_A2H_INT_OPC_DONE) {
4304                 if (priv->hostcmd_wait != NULL)
4305                         complete(priv->hostcmd_wait);
4306         }
4307
4308         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4309                 if (!mutex_is_locked(&priv->fw_mutex) &&
4310                     priv->radio_on && priv->pending_tx_pkts)
4311                         mwl8k_tx_start(priv);
4312         }
4313
4314         return IRQ_HANDLED;
4315 }
4316
4317 static void mwl8k_tx_poll(unsigned long data)
4318 {
4319         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4320         struct mwl8k_priv *priv = hw->priv;
4321         int limit;
4322         int i;
4323
4324         limit = 32;
4325
4326         spin_lock_bh(&priv->tx_lock);
4327
4328         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4329                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4330
4331         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4332                 complete(priv->tx_wait);
4333                 priv->tx_wait = NULL;
4334         }
4335
4336         spin_unlock_bh(&priv->tx_lock);
4337
4338         if (limit) {
4339                 writel(~MWL8K_A2H_INT_TX_DONE,
4340                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4341         } else {
4342                 tasklet_schedule(&priv->poll_tx_task);
4343         }
4344 }
4345
4346 static void mwl8k_rx_poll(unsigned long data)
4347 {
4348         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4349         struct mwl8k_priv *priv = hw->priv;
4350         int limit;
4351
4352         limit = 32;
4353         limit -= rxq_process(hw, 0, limit);
4354         limit -= rxq_refill(hw, 0, limit);
4355
4356         if (limit) {
4357                 writel(~MWL8K_A2H_INT_RX_READY,
4358                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4359         } else {
4360                 tasklet_schedule(&priv->poll_rx_task);
4361         }
4362 }
4363
4364
4365 /*
4366  * Core driver operations.
4367  */
4368 static void mwl8k_tx(struct ieee80211_hw *hw,
4369                      struct ieee80211_tx_control *control,
4370                      struct sk_buff *skb)
4371 {
4372         struct mwl8k_priv *priv = hw->priv;
4373         int index = skb_get_queue_mapping(skb);
4374
4375         if (!priv->radio_on) {
4376                 wiphy_debug(hw->wiphy,
4377                             "dropped TX frame since radio disabled\n");
4378                 dev_kfree_skb(skb);
4379                 return;
4380         }
4381
4382         mwl8k_txq_xmit(hw, index, control->sta, skb);
4383 }
4384
4385 static int mwl8k_start(struct ieee80211_hw *hw)
4386 {
4387         struct mwl8k_priv *priv = hw->priv;
4388         int rc;
4389
4390         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4391                          IRQF_SHARED, MWL8K_NAME, hw);
4392         if (rc) {
4393                 priv->irq = -1;
4394                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4395                 return -EIO;
4396         }
4397         priv->irq = priv->pdev->irq;
4398
4399         /* Enable TX reclaim and RX tasklets.  */
4400         tasklet_enable(&priv->poll_tx_task);
4401         tasklet_enable(&priv->poll_rx_task);
4402
4403         /* Enable interrupts */
4404         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4405         iowrite32(MWL8K_A2H_EVENTS,
4406                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4407
4408         rc = mwl8k_fw_lock(hw);
4409         if (!rc) {
4410                 rc = mwl8k_cmd_radio_enable(hw);
4411
4412                 if (!priv->ap_fw) {
4413                         if (!rc)
4414                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4415
4416                         if (!rc)
4417                                 rc = mwl8k_cmd_set_pre_scan(hw);
4418
4419                         if (!rc)
4420                                 rc = mwl8k_cmd_set_post_scan(hw,
4421                                                 "\x00\x00\x00\x00\x00\x00");
4422                 }
4423
4424                 if (!rc)
4425                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4426
4427                 if (!rc)
4428                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4429
4430                 mwl8k_fw_unlock(hw);
4431         }
4432
4433         if (rc) {
4434                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4435                 free_irq(priv->pdev->irq, hw);
4436                 priv->irq = -1;
4437                 tasklet_disable(&priv->poll_tx_task);
4438                 tasklet_disable(&priv->poll_rx_task);
4439         }
4440
4441         return rc;
4442 }
4443
4444 static void mwl8k_stop(struct ieee80211_hw *hw)
4445 {
4446         struct mwl8k_priv *priv = hw->priv;
4447         int i;
4448
4449         if (!priv->hw_restart_in_progress)
4450                 mwl8k_cmd_radio_disable(hw);
4451
4452         ieee80211_stop_queues(hw);
4453
4454         /* Disable interrupts */
4455         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4456         if (priv->irq != -1) {
4457                 free_irq(priv->pdev->irq, hw);
4458                 priv->irq = -1;
4459         }
4460
4461         /* Stop finalize join worker */
4462         cancel_work_sync(&priv->finalize_join_worker);
4463         cancel_work_sync(&priv->watchdog_ba_handle);
4464         if (priv->beacon_skb != NULL)
4465                 dev_kfree_skb(priv->beacon_skb);
4466
4467         /* Stop TX reclaim and RX tasklets.  */
4468         tasklet_disable(&priv->poll_tx_task);
4469         tasklet_disable(&priv->poll_rx_task);
4470
4471         /* Return all skbs to mac80211 */
4472         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4473                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4474 }
4475
4476 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4477
4478 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4479                                struct ieee80211_vif *vif)
4480 {
4481         struct mwl8k_priv *priv = hw->priv;
4482         struct mwl8k_vif *mwl8k_vif;
4483         u32 macids_supported;
4484         int macid, rc;
4485         struct mwl8k_device_info *di;
4486
4487         /*
4488          * Reject interface creation if sniffer mode is active, as
4489          * STA operation is mutually exclusive with hardware sniffer
4490          * mode.  (Sniffer mode is only used on STA firmware.)
4491          */
4492         if (priv->sniffer_enabled) {
4493                 wiphy_info(hw->wiphy,
4494                            "unable to create STA interface because sniffer mode is enabled\n");
4495                 return -EINVAL;
4496         }
4497
4498         di = priv->device_info;
4499         switch (vif->type) {
4500         case NL80211_IFTYPE_AP:
4501                 if (!priv->ap_fw && di->fw_image_ap) {
4502                         /* we must load the ap fw to meet this request */
4503                         if (!list_empty(&priv->vif_list))
4504                                 return -EBUSY;
4505                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4506                         if (rc)
4507                                 return rc;
4508                 }
4509                 macids_supported = priv->ap_macids_supported;
4510                 break;
4511         case NL80211_IFTYPE_STATION:
4512                 if (priv->ap_fw && di->fw_image_sta) {
4513                         /* we must load the sta fw to meet this request */
4514                         if (!list_empty(&priv->vif_list))
4515                                 return -EBUSY;
4516                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4517                         if (rc)
4518                                 return rc;
4519                 }
4520                 macids_supported = priv->sta_macids_supported;
4521                 break;
4522         default:
4523                 return -EINVAL;
4524         }
4525
4526         macid = ffs(macids_supported & ~priv->macids_used);
4527         if (!macid--)
4528                 return -EBUSY;
4529
4530         /* Setup driver private area. */
4531         mwl8k_vif = MWL8K_VIF(vif);
4532         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4533         mwl8k_vif->vif = vif;
4534         mwl8k_vif->macid = macid;
4535         mwl8k_vif->seqno = 0;
4536         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4537         mwl8k_vif->is_hw_crypto_enabled = false;
4538
4539         /* Set the mac address.  */
4540         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4541
4542         if (priv->ap_fw)
4543                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4544
4545         priv->macids_used |= 1 << mwl8k_vif->macid;
4546         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4547
4548         return 0;
4549 }
4550
4551 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4552 {
4553         /* Has ieee80211_restart_hw re-added the removed interfaces? */
4554         if (!priv->macids_used)
4555                 return;
4556
4557         priv->macids_used &= ~(1 << vif->macid);
4558         list_del(&vif->list);
4559 }
4560
4561 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4562                                    struct ieee80211_vif *vif)
4563 {
4564         struct mwl8k_priv *priv = hw->priv;
4565         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4566
4567         if (priv->ap_fw)
4568                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4569
4570         mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4571
4572         mwl8k_remove_vif(priv, mwl8k_vif);
4573 }
4574
4575 static void mwl8k_hw_restart_work(struct work_struct *work)
4576 {
4577         struct mwl8k_priv *priv =
4578                 container_of(work, struct mwl8k_priv, fw_reload);
4579         struct ieee80211_hw *hw = priv->hw;
4580         struct mwl8k_device_info *di;
4581         int rc;
4582
4583         /* If some command is waiting for a response, clear it */
4584         if (priv->hostcmd_wait != NULL) {
4585                 complete(priv->hostcmd_wait);
4586                 priv->hostcmd_wait = NULL;
4587         }
4588
4589         priv->hw_restart_owner = current;
4590         di = priv->device_info;
4591         mwl8k_fw_lock(hw);
4592
4593         if (priv->ap_fw)
4594                 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4595         else
4596                 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4597
4598         if (rc)
4599                 goto fail;
4600
4601         priv->hw_restart_owner = NULL;
4602         priv->hw_restart_in_progress = false;
4603
4604         /*
4605          * This unlock will wake up the queues and
4606          * also opens the command path for other
4607          * commands
4608          */
4609         mwl8k_fw_unlock(hw);
4610
4611         ieee80211_restart_hw(hw);
4612
4613         wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4614
4615         return;
4616 fail:
4617         mwl8k_fw_unlock(hw);
4618
4619         wiphy_err(hw->wiphy, "Firmware restart failed\n");
4620 }
4621
4622 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4623 {
4624         struct ieee80211_conf *conf = &hw->conf;
4625         struct mwl8k_priv *priv = hw->priv;
4626         int rc;
4627
4628         if (conf->flags & IEEE80211_CONF_IDLE) {
4629                 mwl8k_cmd_radio_disable(hw);
4630                 return 0;
4631         }
4632
4633         rc = mwl8k_fw_lock(hw);
4634         if (rc)
4635                 return rc;
4636
4637         rc = mwl8k_cmd_radio_enable(hw);
4638         if (rc)
4639                 goto out;
4640
4641         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4642         if (rc)
4643                 goto out;
4644
4645         if (conf->power_level > 18)
4646                 conf->power_level = 18;
4647
4648         if (priv->ap_fw) {
4649
4650                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4651                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4652                         if (rc)
4653                                 goto out;
4654                 }
4655
4656                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4657                 if (rc)
4658                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4659                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4660                 if (rc)
4661                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4662
4663         } else {
4664                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4665                 if (rc)
4666                         goto out;
4667                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4668         }
4669
4670 out:
4671         mwl8k_fw_unlock(hw);
4672
4673         return rc;
4674 }
4675
4676 static void
4677 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4678                            struct ieee80211_bss_conf *info, u32 changed)
4679 {
4680         struct mwl8k_priv *priv = hw->priv;
4681         u32 ap_legacy_rates = 0;
4682         u8 ap_mcs_rates[16];
4683         int rc;
4684
4685         if (mwl8k_fw_lock(hw))
4686                 return;
4687
4688         /*
4689          * No need to capture a beacon if we're no longer associated.
4690          */
4691         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4692                 priv->capture_beacon = false;
4693
4694         /*
4695          * Get the AP's legacy and MCS rates.
4696          */
4697         if (vif->bss_conf.assoc) {
4698                 struct ieee80211_sta *ap;
4699
4700                 rcu_read_lock();
4701
4702                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4703                 if (ap == NULL) {
4704                         rcu_read_unlock();
4705                         goto out;
4706                 }
4707
4708                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4709                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4710                 } else {
4711                         ap_legacy_rates =
4712                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4713                 }
4714                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4715
4716                 rcu_read_unlock();
4717         }
4718
4719         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4720                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4721                 if (rc)
4722                         goto out;
4723
4724                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4725                 if (rc)
4726                         goto out;
4727         }
4728
4729         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4730                 rc = mwl8k_set_radio_preamble(hw,
4731                                 vif->bss_conf.use_short_preamble);
4732                 if (rc)
4733                         goto out;
4734         }
4735
4736         if (changed & BSS_CHANGED_ERP_SLOT) {
4737                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4738                 if (rc)
4739                         goto out;
4740         }
4741
4742         if (vif->bss_conf.assoc &&
4743             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4744                         BSS_CHANGED_HT))) {
4745                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4746                 if (rc)
4747                         goto out;
4748         }
4749
4750         if (vif->bss_conf.assoc &&
4751             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4752                 /*
4753                  * Finalize the join.  Tell rx handler to process
4754                  * next beacon from our BSSID.
4755                  */
4756                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4757                 priv->capture_beacon = true;
4758         }
4759
4760 out:
4761         mwl8k_fw_unlock(hw);
4762 }
4763
4764 static void
4765 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4766                           struct ieee80211_bss_conf *info, u32 changed)
4767 {
4768         int rc;
4769
4770         if (mwl8k_fw_lock(hw))
4771                 return;
4772
4773         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4774                 rc = mwl8k_set_radio_preamble(hw,
4775                                 vif->bss_conf.use_short_preamble);
4776                 if (rc)
4777                         goto out;
4778         }
4779
4780         if (changed & BSS_CHANGED_BASIC_RATES) {
4781                 int idx;
4782                 int rate;
4783
4784                 /*
4785                  * Use lowest supported basic rate for multicasts
4786                  * and management frames (such as probe responses --
4787                  * beacons will always go out at 1 Mb/s).
4788                  */
4789                 idx = ffs(vif->bss_conf.basic_rates);
4790                 if (idx)
4791                         idx--;
4792
4793                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4794                         rate = mwl8k_rates_24[idx].hw_value;
4795                 else
4796                         rate = mwl8k_rates_50[idx].hw_value;
4797
4798                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4799         }
4800
4801         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4802                 struct sk_buff *skb;
4803
4804                 skb = ieee80211_beacon_get(hw, vif);
4805                 if (skb != NULL) {
4806                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4807                         kfree_skb(skb);
4808                 }
4809         }
4810
4811         if (changed & BSS_CHANGED_BEACON_ENABLED)
4812                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4813
4814 out:
4815         mwl8k_fw_unlock(hw);
4816 }
4817
4818 static void
4819 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4820                        struct ieee80211_bss_conf *info, u32 changed)
4821 {
4822         struct mwl8k_priv *priv = hw->priv;
4823
4824         if (!priv->ap_fw)
4825                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4826         else
4827                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4828 }
4829
4830 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4831                                    struct netdev_hw_addr_list *mc_list)
4832 {
4833         struct mwl8k_cmd_pkt *cmd;
4834
4835         /*
4836          * Synthesize and return a command packet that programs the
4837          * hardware multicast address filter.  At this point we don't
4838          * know whether FIF_ALLMULTI is being requested, but if it is,
4839          * we'll end up throwing this packet away and creating a new
4840          * one in mwl8k_configure_filter().
4841          */
4842         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4843
4844         return (unsigned long)cmd;
4845 }
4846
4847 static int
4848 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4849                                unsigned int changed_flags,
4850                                unsigned int *total_flags)
4851 {
4852         struct mwl8k_priv *priv = hw->priv;
4853
4854         /*
4855          * Hardware sniffer mode is mutually exclusive with STA
4856          * operation, so refuse to enable sniffer mode if a STA
4857          * interface is active.
4858          */
4859         if (!list_empty(&priv->vif_list)) {
4860                 if (net_ratelimit())
4861                         wiphy_info(hw->wiphy,
4862                                    "not enabling sniffer mode because STA interface is active\n");
4863                 return 0;
4864         }
4865
4866         if (!priv->sniffer_enabled) {
4867                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4868                         return 0;
4869                 priv->sniffer_enabled = true;
4870         }
4871
4872         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4873                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4874                         FIF_OTHER_BSS;
4875
4876         return 1;
4877 }
4878
4879 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4880 {
4881         if (!list_empty(&priv->vif_list))
4882                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4883
4884         return NULL;
4885 }
4886
4887 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4888                                    unsigned int changed_flags,
4889                                    unsigned int *total_flags,
4890                                    u64 multicast)
4891 {
4892         struct mwl8k_priv *priv = hw->priv;
4893         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4894
4895         /*
4896          * AP firmware doesn't allow fine-grained control over
4897          * the receive filter.
4898          */
4899         if (priv->ap_fw) {
4900                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4901                 kfree(cmd);
4902                 return;
4903         }
4904
4905         /*
4906          * Enable hardware sniffer mode if FIF_CONTROL or
4907          * FIF_OTHER_BSS is requested.
4908          */
4909         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4910             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4911                 kfree(cmd);
4912                 return;
4913         }
4914
4915         /* Clear unsupported feature flags */
4916         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4917
4918         if (mwl8k_fw_lock(hw)) {
4919                 kfree(cmd);
4920                 return;
4921         }
4922
4923         if (priv->sniffer_enabled) {
4924                 mwl8k_cmd_enable_sniffer(hw, 0);
4925                 priv->sniffer_enabled = false;
4926         }
4927
4928         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4929                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4930                         /*
4931                          * Disable the BSS filter.
4932                          */
4933                         mwl8k_cmd_set_pre_scan(hw);
4934                 } else {
4935                         struct mwl8k_vif *mwl8k_vif;
4936                         const u8 *bssid;
4937
4938                         /*
4939                          * Enable the BSS filter.
4940                          *
4941                          * If there is an active STA interface, use that
4942                          * interface's BSSID, otherwise use a dummy one
4943                          * (where the OUI part needs to be nonzero for
4944                          * the BSSID to be accepted by POST_SCAN).
4945                          */
4946                         mwl8k_vif = mwl8k_first_vif(priv);
4947                         if (mwl8k_vif != NULL)
4948                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4949                         else
4950                                 bssid = "\x01\x00\x00\x00\x00\x00";
4951
4952                         mwl8k_cmd_set_post_scan(hw, bssid);
4953                 }
4954         }
4955
4956         /*
4957          * If FIF_ALLMULTI is being requested, throw away the command
4958          * packet that ->prepare_multicast() built and replace it with
4959          * a command packet that enables reception of all multicast
4960          * packets.
4961          */
4962         if (*total_flags & FIF_ALLMULTI) {
4963                 kfree(cmd);
4964                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4965         }
4966
4967         if (cmd != NULL) {
4968                 mwl8k_post_cmd(hw, cmd);
4969                 kfree(cmd);
4970         }
4971
4972         mwl8k_fw_unlock(hw);
4973 }
4974
4975 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4976 {
4977         return mwl8k_cmd_set_rts_threshold(hw, value);
4978 }
4979
4980 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4981                             struct ieee80211_vif *vif,
4982                             struct ieee80211_sta *sta)
4983 {
4984         struct mwl8k_priv *priv = hw->priv;
4985
4986         if (priv->ap_fw)
4987                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4988         else
4989                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4990 }
4991
4992 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4993                          struct ieee80211_vif *vif,
4994                          struct ieee80211_sta *sta)
4995 {
4996         struct mwl8k_priv *priv = hw->priv;
4997         int ret;
4998         int i;
4999         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5000         struct ieee80211_key_conf *key;
5001
5002         if (!priv->ap_fw) {
5003                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5004                 if (ret >= 0) {
5005                         MWL8K_STA(sta)->peer_id = ret;
5006                         if (sta->ht_cap.ht_supported)
5007                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
5008                         ret = 0;
5009                 }
5010
5011         } else {
5012                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5013         }
5014
5015         for (i = 0; i < NUM_WEP_KEYS; i++) {
5016                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5017                 if (mwl8k_vif->wep_key_conf[i].enabled)
5018                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5019         }
5020         return ret;
5021 }
5022
5023 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5024                          struct ieee80211_vif *vif, u16 queue,
5025                          const struct ieee80211_tx_queue_params *params)
5026 {
5027         struct mwl8k_priv *priv = hw->priv;
5028         int rc;
5029
5030         rc = mwl8k_fw_lock(hw);
5031         if (!rc) {
5032                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5033                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5034
5035                 if (!priv->wmm_enabled)
5036                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5037
5038                 if (!rc) {
5039                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5040                         rc = mwl8k_cmd_set_edca_params(hw, q,
5041                                                        params->cw_min,
5042                                                        params->cw_max,
5043                                                        params->aifs,
5044                                                        params->txop);
5045                 }
5046
5047                 mwl8k_fw_unlock(hw);
5048         }
5049
5050         return rc;
5051 }
5052
5053 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5054                            struct ieee80211_low_level_stats *stats)
5055 {
5056         return mwl8k_cmd_get_stat(hw, stats);
5057 }
5058
5059 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5060                                 struct survey_info *survey)
5061 {
5062         struct mwl8k_priv *priv = hw->priv;
5063         struct ieee80211_conf *conf = &hw->conf;
5064
5065         if (idx != 0)
5066                 return -ENOENT;
5067
5068         survey->channel = conf->channel;
5069         survey->filled = SURVEY_INFO_NOISE_DBM;
5070         survey->noise = priv->noise;
5071
5072         return 0;
5073 }
5074
5075 #define MAX_AMPDU_ATTEMPTS 5
5076
5077 static int
5078 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5079                    enum ieee80211_ampdu_mlme_action action,
5080                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5081                    u8 buf_size)
5082 {
5083
5084         int i, rc = 0;
5085         struct mwl8k_priv *priv = hw->priv;
5086         struct mwl8k_ampdu_stream *stream;
5087         u8 *addr = sta->addr;
5088
5089         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5090                 return -ENOTSUPP;
5091
5092         spin_lock(&priv->stream_lock);
5093         stream = mwl8k_lookup_stream(hw, addr, tid);
5094
5095         switch (action) {
5096         case IEEE80211_AMPDU_RX_START:
5097         case IEEE80211_AMPDU_RX_STOP:
5098                 break;
5099         case IEEE80211_AMPDU_TX_START:
5100                 /* By the time we get here the hw queues may contain outgoing
5101                  * packets for this RA/TID that are not part of this BA
5102                  * session.  The hw will assign sequence numbers to these
5103                  * packets as they go out.  So if we query the hw for its next
5104                  * sequence number and use that for the SSN here, it may end up
5105                  * being wrong, which will lead to sequence number mismatch at
5106                  * the recipient.  To avoid this, we reset the sequence number
5107                  * to O for the first MPDU in this BA stream.
5108                  */
5109                 *ssn = 0;
5110                 if (stream == NULL) {
5111                         /* This means that somebody outside this driver called
5112                          * ieee80211_start_tx_ba_session.  This is unexpected
5113                          * because we do our own rate control.  Just warn and
5114                          * move on.
5115                          */
5116                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
5117                                    "Proceeding anyway.\n", __func__);
5118                         stream = mwl8k_add_stream(hw, sta, tid);
5119                 }
5120                 if (stream == NULL) {
5121                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5122                         rc = -EBUSY;
5123                         break;
5124                 }
5125                 stream->state = AMPDU_STREAM_IN_PROGRESS;
5126
5127                 /* Release the lock before we do the time consuming stuff */
5128                 spin_unlock(&priv->stream_lock);
5129                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5130                         rc = mwl8k_check_ba(hw, stream);
5131
5132                         /* If HW restart is in progress mwl8k_post_cmd will
5133                          * return -EBUSY. Avoid retrying mwl8k_check_ba in
5134                          * such cases
5135                          */
5136                         if (!rc || rc == -EBUSY)
5137                                 break;
5138                         /*
5139                          * HW queues take time to be flushed, give them
5140                          * sufficient time
5141                          */
5142
5143                         msleep(1000);
5144                 }
5145                 spin_lock(&priv->stream_lock);
5146                 if (rc) {
5147                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5148                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5149                         mwl8k_remove_stream(hw, stream);
5150                         rc = -EBUSY;
5151                         break;
5152                 }
5153                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5154                 break;
5155         case IEEE80211_AMPDU_TX_STOP:
5156                 if (stream) {
5157                         if (stream->state == AMPDU_STREAM_ACTIVE) {
5158                                 spin_unlock(&priv->stream_lock);
5159                                 mwl8k_destroy_ba(hw, stream);
5160                                 spin_lock(&priv->stream_lock);
5161                         }
5162                         mwl8k_remove_stream(hw, stream);
5163                 }
5164                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5165                 break;
5166         case IEEE80211_AMPDU_TX_OPERATIONAL:
5167                 BUG_ON(stream == NULL);
5168                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5169                 spin_unlock(&priv->stream_lock);
5170                 rc = mwl8k_create_ba(hw, stream, buf_size);
5171                 spin_lock(&priv->stream_lock);
5172                 if (!rc)
5173                         stream->state = AMPDU_STREAM_ACTIVE;
5174                 else {
5175                         spin_unlock(&priv->stream_lock);
5176                         mwl8k_destroy_ba(hw, stream);
5177                         spin_lock(&priv->stream_lock);
5178                         wiphy_debug(hw->wiphy,
5179                                 "Failed adding stream for sta %pM tid %d\n",
5180                                 addr, tid);
5181                         mwl8k_remove_stream(hw, stream);
5182                 }
5183                 break;
5184
5185         default:
5186                 rc = -ENOTSUPP;
5187         }
5188
5189         spin_unlock(&priv->stream_lock);
5190         return rc;
5191 }
5192
5193 static const struct ieee80211_ops mwl8k_ops = {
5194         .tx                     = mwl8k_tx,
5195         .start                  = mwl8k_start,
5196         .stop                   = mwl8k_stop,
5197         .add_interface          = mwl8k_add_interface,
5198         .remove_interface       = mwl8k_remove_interface,
5199         .config                 = mwl8k_config,
5200         .bss_info_changed       = mwl8k_bss_info_changed,
5201         .prepare_multicast      = mwl8k_prepare_multicast,
5202         .configure_filter       = mwl8k_configure_filter,
5203         .set_key                = mwl8k_set_key,
5204         .set_rts_threshold      = mwl8k_set_rts_threshold,
5205         .sta_add                = mwl8k_sta_add,
5206         .sta_remove             = mwl8k_sta_remove,
5207         .conf_tx                = mwl8k_conf_tx,
5208         .get_stats              = mwl8k_get_stats,
5209         .get_survey             = mwl8k_get_survey,
5210         .ampdu_action           = mwl8k_ampdu_action,
5211 };
5212
5213 static void mwl8k_finalize_join_worker(struct work_struct *work)
5214 {
5215         struct mwl8k_priv *priv =
5216                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5217         struct sk_buff *skb = priv->beacon_skb;
5218         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5219         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5220         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5221                                          mgmt->u.beacon.variable, len);
5222         int dtim_period = 1;
5223
5224         if (tim && tim[1] >= 2)
5225                 dtim_period = tim[3];
5226
5227         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5228
5229         dev_kfree_skb(skb);
5230         priv->beacon_skb = NULL;
5231 }
5232
5233 enum {
5234         MWL8363 = 0,
5235         MWL8687,
5236         MWL8366,
5237 };
5238
5239 #define MWL8K_8366_AP_FW_API 2
5240 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5241 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5242
5243 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5244         [MWL8363] = {
5245                 .part_name      = "88w8363",
5246                 .helper_image   = "mwl8k/helper_8363.fw",
5247                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5248         },
5249         [MWL8687] = {
5250                 .part_name      = "88w8687",
5251                 .helper_image   = "mwl8k/helper_8687.fw",
5252                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5253         },
5254         [MWL8366] = {
5255                 .part_name      = "88w8366",
5256                 .helper_image   = "mwl8k/helper_8366.fw",
5257                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5258                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5259                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5260                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5261         },
5262 };
5263
5264 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5265 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5266 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5267 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5268 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5269 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5270 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5271
5272 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5273         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5274         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5275         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5276         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5277         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5278         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5279         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5280         { },
5281 };
5282 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5283
5284 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5285 {
5286         int rc;
5287         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5288                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5289                priv->fw_pref, priv->fw_alt);
5290         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5291         if (rc) {
5292                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5293                        pci_name(priv->pdev), priv->fw_alt);
5294                 return rc;
5295         }
5296         return 0;
5297 }
5298
5299 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5300 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5301 {
5302         struct mwl8k_priv *priv = context;
5303         struct mwl8k_device_info *di = priv->device_info;
5304         int rc;
5305
5306         switch (priv->fw_state) {
5307         case FW_STATE_INIT:
5308                 if (!fw) {
5309                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5310                                pci_name(priv->pdev), di->helper_image);
5311                         goto fail;
5312                 }
5313                 priv->fw_helper = fw;
5314                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5315                                       true);
5316                 if (rc && priv->fw_alt) {
5317                         rc = mwl8k_request_alt_fw(priv);
5318                         if (rc)
5319                                 goto fail;
5320                         priv->fw_state = FW_STATE_LOADING_ALT;
5321                 } else if (rc)
5322                         goto fail;
5323                 else
5324                         priv->fw_state = FW_STATE_LOADING_PREF;
5325                 break;
5326
5327         case FW_STATE_LOADING_PREF:
5328                 if (!fw) {
5329                         if (priv->fw_alt) {
5330                                 rc = mwl8k_request_alt_fw(priv);
5331                                 if (rc)
5332                                         goto fail;
5333                                 priv->fw_state = FW_STATE_LOADING_ALT;
5334                         } else
5335                                 goto fail;
5336                 } else {
5337                         priv->fw_ucode = fw;
5338                         rc = mwl8k_firmware_load_success(priv);
5339                         if (rc)
5340                                 goto fail;
5341                         else
5342                                 complete(&priv->firmware_loading_complete);
5343                 }
5344                 break;
5345
5346         case FW_STATE_LOADING_ALT:
5347                 if (!fw) {
5348                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5349                                pci_name(priv->pdev), di->helper_image);
5350                         goto fail;
5351                 }
5352                 priv->fw_ucode = fw;
5353                 rc = mwl8k_firmware_load_success(priv);
5354                 if (rc)
5355                         goto fail;
5356                 else
5357                         complete(&priv->firmware_loading_complete);
5358                 break;
5359
5360         default:
5361                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5362                        MWL8K_NAME, priv->fw_state);
5363                 BUG_ON(1);
5364         }
5365
5366         return;
5367
5368 fail:
5369         priv->fw_state = FW_STATE_ERROR;
5370         complete(&priv->firmware_loading_complete);
5371         device_release_driver(&priv->pdev->dev);
5372         mwl8k_release_firmware(priv);
5373 }
5374
5375 #define MAX_RESTART_ATTEMPTS 1
5376 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5377                                bool nowait)
5378 {
5379         struct mwl8k_priv *priv = hw->priv;
5380         int rc;
5381         int count = MAX_RESTART_ATTEMPTS;
5382
5383 retry:
5384         /* Reset firmware and hardware */
5385         mwl8k_hw_reset(priv);
5386
5387         /* Ask userland hotplug daemon for the device firmware */
5388         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5389         if (rc) {
5390                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5391                 return rc;
5392         }
5393
5394         if (nowait)
5395                 return rc;
5396
5397         /* Load firmware into hardware */
5398         rc = mwl8k_load_firmware(hw);
5399         if (rc)
5400                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5401
5402         /* Reclaim memory once firmware is successfully loaded */
5403         mwl8k_release_firmware(priv);
5404
5405         if (rc && count) {
5406                 /* FW did not start successfully;
5407                  * lets try one more time
5408                  */
5409                 count--;
5410                 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5411                 msleep(20);
5412                 goto retry;
5413         }
5414
5415         return rc;
5416 }
5417
5418 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5419 {
5420         struct mwl8k_priv *priv = hw->priv;
5421         int rc = 0;
5422         int i;
5423
5424         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5425                 rc = mwl8k_txq_init(hw, i);
5426                 if (rc)
5427                         break;
5428                 if (priv->ap_fw)
5429                         iowrite32(priv->txq[i].txd_dma,
5430                                   priv->sram + priv->txq_offset[i]);
5431         }
5432         return rc;
5433 }
5434
5435 /* initialize hw after successfully loading a firmware image */
5436 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5437 {
5438         struct mwl8k_priv *priv = hw->priv;
5439         int rc = 0;
5440         int i;
5441
5442         if (priv->ap_fw) {
5443                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5444                 if (priv->rxd_ops == NULL) {
5445                         wiphy_err(hw->wiphy,
5446                                   "Driver does not have AP firmware image support for this hardware\n");
5447                         goto err_stop_firmware;
5448                 }
5449         } else {
5450                 priv->rxd_ops = &rxd_sta_ops;
5451         }
5452
5453         priv->sniffer_enabled = false;
5454         priv->wmm_enabled = false;
5455         priv->pending_tx_pkts = 0;
5456
5457         rc = mwl8k_rxq_init(hw, 0);
5458         if (rc)
5459                 goto err_stop_firmware;
5460         rxq_refill(hw, 0, INT_MAX);
5461
5462         /* For the sta firmware, we need to know the dma addresses of tx queues
5463          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5464          * prior to issuing this command.  But for the AP case, we learn the
5465          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5466          * case we must initialize the tx queues after.
5467          */
5468         priv->num_ampdu_queues = 0;
5469         if (!priv->ap_fw) {
5470                 rc = mwl8k_init_txqs(hw);
5471                 if (rc)
5472                         goto err_free_queues;
5473         }
5474
5475         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5476         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5477         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5478                   MWL8K_A2H_INT_BA_WATCHDOG,
5479                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5480         iowrite32(MWL8K_A2H_INT_OPC_DONE,
5481                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5482
5483         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5484                          IRQF_SHARED, MWL8K_NAME, hw);
5485         if (rc) {
5486                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5487                 goto err_free_queues;
5488         }
5489
5490         /*
5491          * When hw restart is requested,
5492          * mac80211 will take care of clearing
5493          * the ampdu streams, so do not clear
5494          * the ampdu state here
5495          */
5496         if (!priv->hw_restart_in_progress)
5497                 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5498
5499         /*
5500          * Temporarily enable interrupts.  Initial firmware host
5501          * commands use interrupts and avoid polling.  Disable
5502          * interrupts when done.
5503          */
5504         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5505
5506         /* Get config data, mac addrs etc */
5507         if (priv->ap_fw) {
5508                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5509                 if (!rc)
5510                         rc = mwl8k_init_txqs(hw);
5511                 if (!rc)
5512                         rc = mwl8k_cmd_set_hw_spec(hw);
5513         } else {
5514                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5515         }
5516         if (rc) {
5517                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5518                 goto err_free_irq;
5519         }
5520
5521         /* Turn radio off */
5522         rc = mwl8k_cmd_radio_disable(hw);
5523         if (rc) {
5524                 wiphy_err(hw->wiphy, "Cannot disable\n");
5525                 goto err_free_irq;
5526         }
5527
5528         /* Clear MAC address */
5529         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5530         if (rc) {
5531                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5532                 goto err_free_irq;
5533         }
5534
5535         /* Disable interrupts */
5536         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5537         free_irq(priv->pdev->irq, hw);
5538
5539         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5540                    priv->device_info->part_name,
5541                    priv->hw_rev, hw->wiphy->perm_addr,
5542                    priv->ap_fw ? "AP" : "STA",
5543                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5544                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5545
5546         return 0;
5547
5548 err_free_irq:
5549         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5550         free_irq(priv->pdev->irq, hw);
5551
5552 err_free_queues:
5553         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5554                 mwl8k_txq_deinit(hw, i);
5555         mwl8k_rxq_deinit(hw, 0);
5556
5557 err_stop_firmware:
5558         mwl8k_hw_reset(priv);
5559
5560         return rc;
5561 }
5562
5563 /*
5564  * invoke mwl8k_reload_firmware to change the firmware image after the device
5565  * has already been registered
5566  */
5567 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5568 {
5569         int i, rc = 0;
5570         struct mwl8k_priv *priv = hw->priv;
5571         struct mwl8k_vif *vif, *tmp_vif;
5572
5573         mwl8k_stop(hw);
5574         mwl8k_rxq_deinit(hw, 0);
5575
5576         /*
5577          * All the existing interfaces are re-added by the ieee80211_reconfig;
5578          * which means driver should remove existing interfaces before calling
5579          * ieee80211_restart_hw
5580          */
5581         if (priv->hw_restart_in_progress)
5582                 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5583                         mwl8k_remove_vif(priv, vif);
5584
5585         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5586                 mwl8k_txq_deinit(hw, i);
5587
5588         rc = mwl8k_init_firmware(hw, fw_image, false);
5589         if (rc)
5590                 goto fail;
5591
5592         rc = mwl8k_probe_hw(hw);
5593         if (rc)
5594                 goto fail;
5595
5596         if (priv->hw_restart_in_progress)
5597                 return rc;
5598
5599         rc = mwl8k_start(hw);
5600         if (rc)
5601                 goto fail;
5602
5603         rc = mwl8k_config(hw, ~0);
5604         if (rc)
5605                 goto fail;
5606
5607         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5608                 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5609                 if (rc)
5610                         goto fail;
5611         }
5612
5613         return rc;
5614
5615 fail:
5616         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5617         return rc;
5618 }
5619
5620 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5621 {
5622         struct ieee80211_hw *hw = priv->hw;
5623         int i, rc;
5624
5625         rc = mwl8k_load_firmware(hw);
5626         mwl8k_release_firmware(priv);
5627         if (rc) {
5628                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5629                 return rc;
5630         }
5631
5632         /*
5633          * Extra headroom is the size of the required DMA header
5634          * minus the size of the smallest 802.11 frame (CTS frame).
5635          */
5636         hw->extra_tx_headroom =
5637                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5638
5639         hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5640
5641         hw->channel_change_time = 10;
5642
5643         hw->queues = MWL8K_TX_WMM_QUEUES;
5644
5645         /* Set rssi values to dBm */
5646         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5647
5648         /*
5649          * Ask mac80211 to not to trigger PS mode
5650          * based on PM bit of incoming frames.
5651          */
5652         if (priv->ap_fw)
5653                 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5654
5655         hw->vif_data_size = sizeof(struct mwl8k_vif);
5656         hw->sta_data_size = sizeof(struct mwl8k_sta);
5657
5658         priv->macids_used = 0;
5659         INIT_LIST_HEAD(&priv->vif_list);
5660
5661         /* Set default radio state and preamble */
5662         priv->radio_on = false;
5663         priv->radio_short_preamble = false;
5664
5665         /* Finalize join worker */
5666         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5667         /* Handle watchdog ba events */
5668         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5669         /* To reload the firmware if it crashes */
5670         INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5671
5672         /* TX reclaim and RX tasklets.  */
5673         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5674         tasklet_disable(&priv->poll_tx_task);
5675         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5676         tasklet_disable(&priv->poll_rx_task);
5677
5678         /* Power management cookie */
5679         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5680         if (priv->cookie == NULL)
5681                 return -ENOMEM;
5682
5683         mutex_init(&priv->fw_mutex);
5684         priv->fw_mutex_owner = NULL;
5685         priv->fw_mutex_depth = 0;
5686         priv->hostcmd_wait = NULL;
5687
5688         spin_lock_init(&priv->tx_lock);
5689
5690         spin_lock_init(&priv->stream_lock);
5691
5692         priv->tx_wait = NULL;
5693
5694         rc = mwl8k_probe_hw(hw);
5695         if (rc)
5696                 goto err_free_cookie;
5697
5698         hw->wiphy->interface_modes = 0;
5699         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5700                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5701         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5702                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5703
5704         rc = ieee80211_register_hw(hw);
5705         if (rc) {
5706                 wiphy_err(hw->wiphy, "Cannot register device\n");
5707                 goto err_unprobe_hw;
5708         }
5709
5710         return 0;
5711
5712 err_unprobe_hw:
5713         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5714                 mwl8k_txq_deinit(hw, i);
5715         mwl8k_rxq_deinit(hw, 0);
5716
5717 err_free_cookie:
5718         if (priv->cookie != NULL)
5719                 pci_free_consistent(priv->pdev, 4,
5720                                 priv->cookie, priv->cookie_dma);
5721
5722         return rc;
5723 }
5724 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5725                                  const struct pci_device_id *id)
5726 {
5727         static int printed_version;
5728         struct ieee80211_hw *hw;
5729         struct mwl8k_priv *priv;
5730         struct mwl8k_device_info *di;
5731         int rc;
5732
5733         if (!printed_version) {
5734                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5735                 printed_version = 1;
5736         }
5737
5738
5739         rc = pci_enable_device(pdev);
5740         if (rc) {
5741                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5742                        MWL8K_NAME);
5743                 return rc;
5744         }
5745
5746         rc = pci_request_regions(pdev, MWL8K_NAME);
5747         if (rc) {
5748                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5749                        MWL8K_NAME);
5750                 goto err_disable_device;
5751         }
5752
5753         pci_set_master(pdev);
5754
5755
5756         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5757         if (hw == NULL) {
5758                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5759                 rc = -ENOMEM;
5760                 goto err_free_reg;
5761         }
5762
5763         SET_IEEE80211_DEV(hw, &pdev->dev);
5764         pci_set_drvdata(pdev, hw);
5765
5766         priv = hw->priv;
5767         priv->hw = hw;
5768         priv->pdev = pdev;
5769         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5770
5771
5772         priv->sram = pci_iomap(pdev, 0, 0x10000);
5773         if (priv->sram == NULL) {
5774                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5775                 goto err_iounmap;
5776         }
5777
5778         /*
5779          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5780          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5781          */
5782         priv->regs = pci_iomap(pdev, 1, 0x10000);
5783         if (priv->regs == NULL) {
5784                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5785                 if (priv->regs == NULL) {
5786                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5787                         goto err_iounmap;
5788                 }
5789         }
5790
5791         /*
5792          * Choose the initial fw image depending on user input.  If a second
5793          * image is available, make it the alternative image that will be
5794          * loaded if the first one fails.
5795          */
5796         init_completion(&priv->firmware_loading_complete);
5797         di = priv->device_info;
5798         if (ap_mode_default && di->fw_image_ap) {
5799                 priv->fw_pref = di->fw_image_ap;
5800                 priv->fw_alt = di->fw_image_sta;
5801         } else if (!ap_mode_default && di->fw_image_sta) {
5802                 priv->fw_pref = di->fw_image_sta;
5803                 priv->fw_alt = di->fw_image_ap;
5804         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5805                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5806                 priv->fw_pref = di->fw_image_sta;
5807         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5808                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5809                 priv->fw_pref = di->fw_image_ap;
5810         }
5811         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5812         if (rc)
5813                 goto err_stop_firmware;
5814
5815         priv->hw_restart_in_progress = false;
5816
5817         return rc;
5818
5819 err_stop_firmware:
5820         mwl8k_hw_reset(priv);
5821
5822 err_iounmap:
5823         if (priv->regs != NULL)
5824                 pci_iounmap(pdev, priv->regs);
5825
5826         if (priv->sram != NULL)
5827                 pci_iounmap(pdev, priv->sram);
5828
5829         pci_set_drvdata(pdev, NULL);
5830         ieee80211_free_hw(hw);
5831
5832 err_free_reg:
5833         pci_release_regions(pdev);
5834
5835 err_disable_device:
5836         pci_disable_device(pdev);
5837
5838         return rc;
5839 }
5840
5841 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5842 {
5843         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5844 }
5845
5846 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5847 {
5848         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5849         struct mwl8k_priv *priv;
5850         int i;
5851
5852         if (hw == NULL)
5853                 return;
5854         priv = hw->priv;
5855
5856         wait_for_completion(&priv->firmware_loading_complete);
5857
5858         if (priv->fw_state == FW_STATE_ERROR) {
5859                 mwl8k_hw_reset(priv);
5860                 goto unmap;
5861         }
5862
5863         ieee80211_stop_queues(hw);
5864
5865         ieee80211_unregister_hw(hw);
5866
5867         /* Remove TX reclaim and RX tasklets.  */
5868         tasklet_kill(&priv->poll_tx_task);
5869         tasklet_kill(&priv->poll_rx_task);
5870
5871         /* Stop hardware */
5872         mwl8k_hw_reset(priv);
5873
5874         /* Return all skbs to mac80211 */
5875         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5876                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5877
5878         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5879                 mwl8k_txq_deinit(hw, i);
5880
5881         mwl8k_rxq_deinit(hw, 0);
5882
5883         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5884
5885 unmap:
5886         pci_iounmap(pdev, priv->regs);
5887         pci_iounmap(pdev, priv->sram);
5888         pci_set_drvdata(pdev, NULL);
5889         ieee80211_free_hw(hw);
5890         pci_release_regions(pdev);
5891         pci_disable_device(pdev);
5892 }
5893
5894 static struct pci_driver mwl8k_driver = {
5895         .name           = MWL8K_NAME,
5896         .id_table       = mwl8k_pci_id_table,
5897         .probe          = mwl8k_probe,
5898         .remove         = __devexit_p(mwl8k_remove),
5899         .shutdown       = __devexit_p(mwl8k_shutdown),
5900 };
5901
5902 module_pci_driver(mwl8k_driver);
5903
5904 MODULE_DESCRIPTION(MWL8K_DESC);
5905 MODULE_VERSION(MWL8K_VERSION);
5906 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5907 MODULE_LICENSE("GPL");