drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/sched.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/list.h>
  18 #include <linux/pci.h>
  19 #include <linux/delay.h>
  20 #include <linux/completion.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/slab.h>
  23 #include <net/mac80211.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/firmware.h>
  26 #include <linux/workqueue.h>
  27
  28 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  29 #define MWL8K_NAME      KBUILD_MODNAME
  30 #define MWL8K_VERSION   "0.12"
  31
  32 /* Module parameters */
  33 static unsigned ap_mode_default;
  34 module_param(ap_mode_default, bool, 0);
  35 MODULE_PARM_DESC(ap_mode_default,
  36                  "Set to 1 to make ap mode the default instead of sta mode");
  37
  38 /* Register definitions */
  39 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  40 #define  MWL8K_MODE_STA                          0x0000005a
  41 #define  MWL8K_MODE_AP                           0x000000a5
  42 #define MWL8K_HIU_INT_CODE                      0x00000c14
  43 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  44 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  45 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  46 #define MWL8K_HIU_SCRATCH                       0x00000c40
  47
  48 /* Host->device communications */
  49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  51 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  54 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  55 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  56 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  57 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  58
  59 /* Device->host communications */
  60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  62 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  65 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  66 #define  MWL8K_A2H_INT_BA_WATCHDOG               (1 << 14)
  67 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  68 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  69 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  70 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  71 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  72 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  73 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  74 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  75 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  76
  77 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  78                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  79                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  80                                  MWL8K_A2H_INT_RADAR_DETECT | \
  81                                  MWL8K_A2H_INT_RADIO_ON | \
  82                                  MWL8K_A2H_INT_RADIO_OFF | \
  83                                  MWL8K_A2H_INT_MAC_EVENT | \
  84                                  MWL8K_A2H_INT_OPC_DONE | \
  85                                  MWL8K_A2H_INT_RX_READY | \
  86                                  MWL8K_A2H_INT_TX_DONE | \
  87                                  MWL8K_A2H_INT_BA_WATCHDOG)
  88
  89 #define MWL8K_RX_QUEUES         1
  90 #define MWL8K_TX_WMM_QUEUES     4
  91 #define MWL8K_MAX_AMPDU_QUEUES  8
  92 #define MWL8K_MAX_TX_QUEUES     (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
  93 #define mwl8k_tx_queues(priv)   (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
  94
  95 struct rxd_ops {
  96         int rxd_size;
  97         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
  98         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
  99         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
 100                            __le16 *qos, s8 *noise);
 101 };
 102
 103 struct mwl8k_device_info {
 104         char *part_name;
 105         char *helper_image;
 106         char *fw_image_sta;
 107         char *fw_image_ap;
 108         struct rxd_ops *ap_rxd_ops;
 109         u32 fw_api_ap;
 110 };
 111
 112 struct mwl8k_rx_queue {
 113         int rxd_count;
 114
 115         /* hw receives here */
 116         int head;
 117
 118         /* refill descs here */
 119         int tail;
 120
 121         void *rxd;
 122         dma_addr_t rxd_dma;
 123         struct {
 124                 struct sk_buff *skb;
 125                 DEFINE_DMA_UNMAP_ADDR(dma);
 126         } *buf;
 127 };
 128
 129 struct mwl8k_tx_queue {
 130         /* hw transmits here */
 131         int head;
 132
 133         /* sw appends here */
 134         int tail;
 135
 136         unsigned int len;
 137         struct mwl8k_tx_desc *txd;
 138         dma_addr_t txd_dma;
 139         struct sk_buff **skb;
 140 };
 141
 142 enum {
 143         AMPDU_NO_STREAM,
 144         AMPDU_STREAM_NEW,
 145         AMPDU_STREAM_IN_PROGRESS,
 146         AMPDU_STREAM_ACTIVE,
 147 };
 148
 149 struct mwl8k_ampdu_stream {
 150         struct ieee80211_sta *sta;
 151         u8 tid;
 152         u8 state;
 153         u8 idx;
 154         u8 txq_idx; /* index of this stream in priv->txq */
 155 };
 156
 157 struct mwl8k_priv {
 158         struct ieee80211_hw *hw;
 159         struct pci_dev *pdev;
 160
 161         struct mwl8k_device_info *device_info;
 162
 163         void __iomem *sram;
 164         void __iomem *regs;
 165
 166         /* firmware */
 167         const struct firmware *fw_helper;
 168         const struct firmware *fw_ucode;
 169
 170         /* hardware/firmware parameters */
 171         bool ap_fw;
 172         struct rxd_ops *rxd_ops;
 173         struct ieee80211_supported_band band_24;
 174         struct ieee80211_channel channels_24[14];
 175         struct ieee80211_rate rates_24[14];
 176         struct ieee80211_supported_band band_50;
 177         struct ieee80211_channel channels_50[4];
 178         struct ieee80211_rate rates_50[9];
 179         u32 ap_macids_supported;
 180         u32 sta_macids_supported;
 181
 182         /* Ampdu stream information */
 183         u8 num_ampdu_queues;
 184         spinlock_t stream_lock;
 185         struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
 186         struct work_struct watchdog_ba_handle;
 187
 188         /* firmware access */
 189         struct mutex fw_mutex;
 190         struct task_struct *fw_mutex_owner;
 191         int fw_mutex_depth;
 192         struct completion *hostcmd_wait;
 193
 194         /* lock held over TX and TX reap */
 195         spinlock_t tx_lock;
 196
 197         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 198         struct completion *tx_wait;
 199
 200         /* List of interfaces.  */
 201         u32 macids_used;
 202         struct list_head vif_list;
 203
 204         /* power management status cookie from firmware */
 205         u32 *cookie;
 206         dma_addr_t cookie_dma;
 207
 208         u16 num_mcaddrs;
 209         u8 hw_rev;
 210         u32 fw_rev;
 211
 212         /*
 213          * Running count of TX packets in flight, to avoid
 214          * iterating over the transmit rings each time.
 215          */
 216         int pending_tx_pkts;
 217
 218         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 219         struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
 220         u32 txq_offset[MWL8K_MAX_TX_QUEUES];
 221
 222         bool radio_on;
 223         bool radio_short_preamble;
 224         bool sniffer_enabled;
 225         bool wmm_enabled;
 226
 227         /* XXX need to convert this to handle multiple interfaces */
 228         bool capture_beacon;
 229         u8 capture_bssid[ETH_ALEN];
 230         struct sk_buff *beacon_skb;
 231
 232         /*
 233          * This FJ worker has to be global as it is scheduled from the
 234          * RX handler.  At this point we don't know which interface it
 235          * belongs to until the list of bssids waiting to complete join
 236          * is checked.
 237          */
 238         struct work_struct finalize_join_worker;
 239
 240         /* Tasklet to perform TX reclaim.  */
 241         struct tasklet_struct poll_tx_task;
 242
 243         /* Tasklet to perform RX.  */
 244         struct tasklet_struct poll_rx_task;
 245
 246         /* Most recently reported noise in dBm */
 247         s8 noise;
 248
 249         /*
 250          * preserve the queue configurations so they can be restored if/when
 251          * the firmware image is swapped.
 252          */
 253         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
 254
 255         /* async firmware loading state */
 256         unsigned fw_state;
 257         char *fw_pref;
 258         char *fw_alt;
 259         struct completion firmware_loading_complete;
 260 };
 261
 262 #define MAX_WEP_KEY_LEN         13
 263 #define NUM_WEP_KEYS            4
 264
 265 /* Per interface specific private data */
 266 struct mwl8k_vif {
 267         struct list_head list;
 268         struct ieee80211_vif *vif;
 269
 270         /* Firmware macid for this vif.  */
 271         int macid;
 272
 273         /* Non AMPDU sequence number assigned by driver.  */
 274         u16 seqno;
 275
 276         /* Saved WEP keys */
 277         struct {
 278                 u8 enabled;
 279                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 280         } wep_key_conf[NUM_WEP_KEYS];
 281
 282         /* BSSID */
 283         u8 bssid[ETH_ALEN];
 284
 285         /* A flag to indicate is HW crypto is enabled for this bssid */
 286         bool is_hw_crypto_enabled;
 287 };
 288 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 289 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 290
 291 struct mwl8k_sta {
 292         /* Index into station database. Returned by UPDATE_STADB.  */
 293         u8 peer_id;
 294         u8 is_ampdu_allowed;
 295 };
 296 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 297
 298 static const struct ieee80211_channel mwl8k_channels_24[] = {
 299         { .center_freq = 2412, .hw_value = 1, },
 300         { .center_freq = 2417, .hw_value = 2, },
 301         { .center_freq = 2422, .hw_value = 3, },
 302         { .center_freq = 2427, .hw_value = 4, },
 303         { .center_freq = 2432, .hw_value = 5, },
 304         { .center_freq = 2437, .hw_value = 6, },
 305         { .center_freq = 2442, .hw_value = 7, },
 306         { .center_freq = 2447, .hw_value = 8, },
 307         { .center_freq = 2452, .hw_value = 9, },
 308         { .center_freq = 2457, .hw_value = 10, },
 309         { .center_freq = 2462, .hw_value = 11, },
 310         { .center_freq = 2467, .hw_value = 12, },
 311         { .center_freq = 2472, .hw_value = 13, },
 312         { .center_freq = 2484, .hw_value = 14, },
 313 };
 314
 315 static const struct ieee80211_rate mwl8k_rates_24[] = {
 316         { .bitrate = 10, .hw_value = 2, },
 317         { .bitrate = 20, .hw_value = 4, },
 318         { .bitrate = 55, .hw_value = 11, },
 319         { .bitrate = 110, .hw_value = 22, },
 320         { .bitrate = 220, .hw_value = 44, },
 321         { .bitrate = 60, .hw_value = 12, },
 322         { .bitrate = 90, .hw_value = 18, },
 323         { .bitrate = 120, .hw_value = 24, },
 324         { .bitrate = 180, .hw_value = 36, },
 325         { .bitrate = 240, .hw_value = 48, },
 326         { .bitrate = 360, .hw_value = 72, },
 327         { .bitrate = 480, .hw_value = 96, },
 328         { .bitrate = 540, .hw_value = 108, },
 329         { .bitrate = 720, .hw_value = 144, },
 330 };
 331
 332 static const struct ieee80211_channel mwl8k_channels_50[] = {
 333         { .center_freq = 5180, .hw_value = 36, },
 334         { .center_freq = 5200, .hw_value = 40, },
 335         { .center_freq = 5220, .hw_value = 44, },
 336         { .center_freq = 5240, .hw_value = 48, },
 337 };
 338
 339 static const struct ieee80211_rate mwl8k_rates_50[] = {
 340         { .bitrate = 60, .hw_value = 12, },
 341         { .bitrate = 90, .hw_value = 18, },
 342         { .bitrate = 120, .hw_value = 24, },
 343         { .bitrate = 180, .hw_value = 36, },
 344         { .bitrate = 240, .hw_value = 48, },
 345         { .bitrate = 360, .hw_value = 72, },
 346         { .bitrate = 480, .hw_value = 96, },
 347         { .bitrate = 540, .hw_value = 108, },
 348         { .bitrate = 720, .hw_value = 144, },
 349 };
 350
 351 /* Set or get info from Firmware */
 352 #define MWL8K_CMD_GET                   0x0000
 353 #define MWL8K_CMD_SET                   0x0001
 354 #define MWL8K_CMD_SET_LIST              0x0002
 355
 356 /* Firmware command codes */
 357 #define MWL8K_CMD_CODE_DNLD             0x0001
 358 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 359 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 360 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 361 #define MWL8K_CMD_GET_STAT              0x0014
 362 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 363 #define MWL8K_CMD_RF_TX_POWER           0x001e
 364 #define MWL8K_CMD_TX_POWER              0x001f
 365 #define MWL8K_CMD_RF_ANTENNA            0x0020
 366 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 367 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 368 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 369 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 370 #define MWL8K_CMD_SET_AID               0x010d
 371 #define MWL8K_CMD_SET_RATE              0x0110
 372 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 373 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 374 #define MWL8K_CMD_SET_SLOT              0x0114
 375 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 376 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 377 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 378 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 379 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 380 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 381 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 382 #define MWL8K_CMD_GET_WATCHDOG_BITMAP   0x0205
 383 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 384 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 385 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 386 #define MWL8K_CMD_UPDATE_STADB          0x1123
 387 #define MWL8K_CMD_BASTREAM              0x1125
 388
 389 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 390 {
 391         u16 command = le16_to_cpu(cmd);
 392
 393 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 394                                         snprintf(buf, bufsize, "%s", #x);\
 395                                         return buf;\
 396                                         } while (0)
 397         switch (command & ~0x8000) {
 398                 MWL8K_CMDNAME(CODE_DNLD);
 399                 MWL8K_CMDNAME(GET_HW_SPEC);
 400                 MWL8K_CMDNAME(SET_HW_SPEC);
 401                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 402                 MWL8K_CMDNAME(GET_STAT);
 403                 MWL8K_CMDNAME(RADIO_CONTROL);
 404                 MWL8K_CMDNAME(RF_TX_POWER);
 405                 MWL8K_CMDNAME(TX_POWER);
 406                 MWL8K_CMDNAME(RF_ANTENNA);
 407                 MWL8K_CMDNAME(SET_BEACON);
 408                 MWL8K_CMDNAME(SET_PRE_SCAN);
 409                 MWL8K_CMDNAME(SET_POST_SCAN);
 410                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 411                 MWL8K_CMDNAME(SET_AID);
 412                 MWL8K_CMDNAME(SET_RATE);
 413                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 414                 MWL8K_CMDNAME(RTS_THRESHOLD);
 415                 MWL8K_CMDNAME(SET_SLOT);
 416                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 417                 MWL8K_CMDNAME(SET_WMM_MODE);
 418                 MWL8K_CMDNAME(MIMO_CONFIG);
 419                 MWL8K_CMDNAME(USE_FIXED_RATE);
 420                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 421                 MWL8K_CMDNAME(SET_MAC_ADDR);
 422                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 423                 MWL8K_CMDNAME(BSS_START);
 424                 MWL8K_CMDNAME(SET_NEW_STN);
 425                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 426                 MWL8K_CMDNAME(UPDATE_STADB);
 427                 MWL8K_CMDNAME(BASTREAM);
 428                 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
 429         default:
 430                 snprintf(buf, bufsize, "0x%x", cmd);
 431         }
 432 #undef MWL8K_CMDNAME
 433
 434         return buf;
 435 }
 436
 437 /* Hardware and firmware reset */
 438 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 439 {
 440         iowrite32(MWL8K_H2A_INT_RESET,
 441                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 442         iowrite32(MWL8K_H2A_INT_RESET,
 443                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 444         msleep(20);
 445 }
 446
 447 /* Release fw image */
 448 static void mwl8k_release_fw(const struct firmware **fw)
 449 {
 450         if (*fw == NULL)
 451                 return;
 452         release_firmware(*fw);
 453         *fw = NULL;
 454 }
 455
 456 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 457 {
 458         mwl8k_release_fw(&priv->fw_ucode);
 459         mwl8k_release_fw(&priv->fw_helper);
 460 }
 461
 462 /* states for asynchronous f/w loading */
 463 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 464 enum {
 465         FW_STATE_INIT = 0,
 466         FW_STATE_LOADING_PREF,
 467         FW_STATE_LOADING_ALT,
 468         FW_STATE_ERROR,
 469 };
 470
 471 /* Request fw image */
 472 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 473                             const char *fname, const struct firmware **fw,
 474                             bool nowait)
 475 {
 476         /* release current image */
 477         if (*fw != NULL)
 478                 mwl8k_release_fw(fw);
 479
 480         if (nowait)
 481                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 482                                                &priv->pdev->dev, GFP_KERNEL,
 483                                                priv, mwl8k_fw_state_machine);
 484         else
 485                 return request_firmware(fw, fname, &priv->pdev->dev);
 486 }
 487
 488 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 489                                   bool nowait)
 490 {
 491         struct mwl8k_device_info *di = priv->device_info;
 492         int rc;
 493
 494         if (di->helper_image != NULL) {
 495                 if (nowait)
 496                         rc = mwl8k_request_fw(priv, di->helper_image,
 497                                               &priv->fw_helper, true);
 498                 else
 499                         rc = mwl8k_request_fw(priv, di->helper_image,
 500                                               &priv->fw_helper, false);
 501                 if (rc)
 502                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 503                                pci_name(priv->pdev), di->helper_image);
 504
 505                 if (rc || nowait)
 506                         return rc;
 507         }
 508
 509         if (nowait) {
 510                 /*
 511                  * if we get here, no helper image is needed.  Skip the
 512                  * FW_STATE_INIT state.
 513                  */
 514                 priv->fw_state = FW_STATE_LOADING_PREF;
 515                 rc = mwl8k_request_fw(priv, fw_image,
 516                                       &priv->fw_ucode,
 517                                       true);
 518         } else
 519                 rc = mwl8k_request_fw(priv, fw_image,
 520                                       &priv->fw_ucode, false);
 521         if (rc) {
 522                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 523                        pci_name(priv->pdev), fw_image);
 524                 mwl8k_release_fw(&priv->fw_helper);
 525                 return rc;
 526         }
 527
 528         return 0;
 529 }
 530
 531 struct mwl8k_cmd_pkt {
 532         __le16  code;
 533         __le16  length;
 534         __u8    seq_num;
 535         __u8    macid;
 536         __le16  result;
 537         char    payload[0];
 538 } __packed;
 539
 540 /*
 541  * Firmware loading.
 542  */
 543 static int
 544 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 545 {
 546         void __iomem *regs = priv->regs;
 547         dma_addr_t dma_addr;
 548         int loops;
 549
 550         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 551         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 552                 return -ENOMEM;
 553
 554         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 555         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 556         iowrite32(MWL8K_H2A_INT_DOORBELL,
 557                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 558         iowrite32(MWL8K_H2A_INT_DUMMY,
 559                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 560
 561         loops = 1000;
 562         do {
 563                 u32 int_code;
 564
 565                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 566                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 567                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 568                         break;
 569                 }
 570
 571                 cond_resched();
 572                 udelay(1);
 573         } while (--loops);
 574
 575         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 576
 577         return loops ? 0 : -ETIMEDOUT;
 578 }
 579
 580 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 581                                 const u8 *data, size_t length)
 582 {
 583         struct mwl8k_cmd_pkt *cmd;
 584         int done;
 585         int rc = 0;
 586
 587         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 588         if (cmd == NULL)
 589                 return -ENOMEM;
 590
 591         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 592         cmd->seq_num = 0;
 593         cmd->macid = 0;
 594         cmd->result = 0;
 595
 596         done = 0;
 597         while (length) {
 598                 int block_size = length > 256 ? 256 : length;
 599
 600                 memcpy(cmd->payload, data + done, block_size);
 601                 cmd->length = cpu_to_le16(block_size);
 602
 603                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 604                                                 sizeof(*cmd) + block_size);
 605                 if (rc)
 606                         break;
 607
 608                 done += block_size;
 609                 length -= block_size;
 610         }
 611
 612         if (!rc) {
 613                 cmd->length = 0;
 614                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 615         }
 616
 617         kfree(cmd);
 618
 619         return rc;
 620 }
 621
 622 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 623                                 const u8 *data, size_t length)
 624 {
 625         unsigned char *buffer;
 626         int may_continue, rc = 0;
 627         u32 done, prev_block_size;
 628
 629         buffer = kmalloc(1024, GFP_KERNEL);
 630         if (buffer == NULL)
 631                 return -ENOMEM;
 632
 633         done = 0;
 634         prev_block_size = 0;
 635         may_continue = 1000;
 636         while (may_continue > 0) {
 637                 u32 block_size;
 638
 639                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 640                 if (block_size & 1) {
 641                         block_size &= ~1;
 642                         may_continue--;
 643                 } else {
 644                         done += prev_block_size;
 645                         length -= prev_block_size;
 646                 }
 647
 648                 if (block_size > 1024 || block_size > length) {
 649                         rc = -EOVERFLOW;
 650                         break;
 651                 }
 652
 653                 if (length == 0) {
 654                         rc = 0;
 655                         break;
 656                 }
 657
 658                 if (block_size == 0) {
 659                         rc = -EPROTO;
 660                         may_continue--;
 661                         udelay(1);
 662                         continue;
 663                 }
 664
 665                 prev_block_size = block_size;
 666                 memcpy(buffer, data + done, block_size);
 667
 668                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 669                 if (rc)
 670                         break;
 671         }
 672
 673         if (!rc && length != 0)
 674                 rc = -EREMOTEIO;
 675
 676         kfree(buffer);
 677
 678         return rc;
 679 }
 680
 681 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 682 {
 683         struct mwl8k_priv *priv = hw->priv;
 684         const struct firmware *fw = priv->fw_ucode;
 685         int rc;
 686         int loops;
 687
 688         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 689                 const struct firmware *helper = priv->fw_helper;
 690
 691                 if (helper == NULL) {
 692                         printk(KERN_ERR "%s: helper image needed but none "
 693                                "given\n", pci_name(priv->pdev));
 694                         return -EINVAL;
 695                 }
 696
 697                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 698                 if (rc) {
 699                         printk(KERN_ERR "%s: unable to load firmware "
 700                                "helper image\n", pci_name(priv->pdev));
 701                         return rc;
 702                 }
 703                 msleep(5);
 704
 705                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 706         } else {
 707                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 708         }
 709
 710         if (rc) {
 711                 printk(KERN_ERR "%s: unable to load firmware image\n",
 712                        pci_name(priv->pdev));
 713                 return rc;
 714         }
 715
 716         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 717
 718         loops = 500000;
 719         do {
 720                 u32 ready_code;
 721
 722                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 723                 if (ready_code == MWL8K_FWAP_READY) {
 724                         priv->ap_fw = 1;
 725                         break;
 726                 } else if (ready_code == MWL8K_FWSTA_READY) {
 727                         priv->ap_fw = 0;
 728                         break;
 729                 }
 730
 731                 cond_resched();
 732                 udelay(1);
 733         } while (--loops);
 734
 735         return loops ? 0 : -ETIMEDOUT;
 736 }
 737
 738
 739 /* DMA header used by firmware and hardware.  */
 740 struct mwl8k_dma_data {
 741         __le16 fwlen;
 742         struct ieee80211_hdr wh;
 743         char data[0];
 744 } __packed;
 745
 746 /* Routines to add/remove DMA header from skb.  */
 747 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 748 {
 749         struct mwl8k_dma_data *tr;
 750         int hdrlen;
 751
 752         tr = (struct mwl8k_dma_data *)skb->data;
 753         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 754
 755         if (hdrlen != sizeof(tr->wh)) {
 756                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 757                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 758                         *((__le16 *)(tr->data - 2)) = qos;
 759                 } else {
 760                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 761                 }
 762         }
 763
 764         if (hdrlen != sizeof(*tr))
 765                 skb_pull(skb, sizeof(*tr) - hdrlen);
 766 }
 767
 768 static void
 769 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
 770 {
 771         struct ieee80211_hdr *wh;
 772         int hdrlen;
 773         int reqd_hdrlen;
 774         struct mwl8k_dma_data *tr;
 775
 776         /*
 777          * Add a firmware DMA header; the firmware requires that we
 778          * present a 2-byte payload length followed by a 4-address
 779          * header (without QoS field), followed (optionally) by any
 780          * WEP/ExtIV header (but only filled in for CCMP).
 781          */
 782         wh = (struct ieee80211_hdr *)skb->data;
 783
 784         hdrlen = ieee80211_hdrlen(wh->frame_control);
 785         reqd_hdrlen = sizeof(*tr);
 786
 787         if (hdrlen != reqd_hdrlen)
 788                 skb_push(skb, reqd_hdrlen - hdrlen);
 789
 790         if (ieee80211_is_data_qos(wh->frame_control))
 791                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 792
 793         tr = (struct mwl8k_dma_data *)skb->data;
 794         if (wh != &tr->wh)
 795                 memmove(&tr->wh, wh, hdrlen);
 796         if (hdrlen != sizeof(tr->wh))
 797                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 798
 799         /*
 800          * Firmware length is the length of the fully formed "802.11
 801          * payload".  That is, everything except for the 802.11 header.
 802          * This includes all crypto material including the MIC.
 803          */
 804         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 805 }
 806
 807 static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
 808 {
 809         struct ieee80211_hdr *wh;
 810         struct ieee80211_tx_info *tx_info;
 811         struct ieee80211_key_conf *key_conf;
 812         int data_pad;
 813
 814         wh = (struct ieee80211_hdr *)skb->data;
 815
 816         tx_info = IEEE80211_SKB_CB(skb);
 817
 818         key_conf = NULL;
 819         if (ieee80211_is_data(wh->frame_control))
 820                 key_conf = tx_info->control.hw_key;
 821
 822         /*
 823          * Make sure the packet header is in the DMA header format (4-address
 824          * without QoS), the necessary crypto padding between the header and the
 825          * payload has already been provided by mac80211, but it doesn't add tail
 826          * padding when HW crypto is enabled.
 827          *
 828          * We have the following trailer padding requirements:
 829          * - WEP: 4 trailer bytes (ICV)
 830          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 831          * - CCMP: 8 trailer bytes (MIC)
 832          */
 833         data_pad = 0;
 834         if (key_conf != NULL) {
 835                 switch (key_conf->cipher) {
 836                 case WLAN_CIPHER_SUITE_WEP40:
 837                 case WLAN_CIPHER_SUITE_WEP104:
 838                         data_pad = 4;
 839                         break;
 840                 case WLAN_CIPHER_SUITE_TKIP:
 841                         data_pad = 12;
 842                         break;
 843                 case WLAN_CIPHER_SUITE_CCMP:
 844                         data_pad = 8;
 845                         break;
 846                 }
 847         }
 848         mwl8k_add_dma_header(skb, data_pad);
 849 }
 850
 851 /*
 852  * Packet reception for 88w8366 AP firmware.
 853  */
 854 struct mwl8k_rxd_8366_ap {
 855         __le16 pkt_len;
 856         __u8 sq2;
 857         __u8 rate;
 858         __le32 pkt_phys_addr;
 859         __le32 next_rxd_phys_addr;
 860         __le16 qos_control;
 861         __le16 htsig2;
 862         __le32 hw_rssi_info;
 863         __le32 hw_noise_floor_info;
 864         __u8 noise_floor;
 865         __u8 pad0[3];
 866         __u8 rssi;
 867         __u8 rx_status;
 868         __u8 channel;
 869         __u8 rx_ctrl;
 870 } __packed;
 871
 872 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 873 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 874 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 875
 876 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 877
 878 /* 8366 AP rx_status bits */
 879 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 880 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 881 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 882 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 883 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 884
 885 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 886 {
 887         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 888
 889         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 890         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 891 }
 892
 893 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 894 {
 895         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 896
 897         rxd->pkt_len = cpu_to_le16(len);
 898         rxd->pkt_phys_addr = cpu_to_le32(addr);
 899         wmb();
 900         rxd->rx_ctrl = 0;
 901 }
 902
 903 static int
 904 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 905                           __le16 *qos, s8 *noise)
 906 {
 907         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 908
 909         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 910                 return -1;
 911         rmb();
 912
 913         memset(status, 0, sizeof(*status));
 914
 915         status->signal = -rxd->rssi;
 916         *noise = -rxd->noise_floor;
 917
 918         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 919                 status->flag |= RX_FLAG_HT;
 920                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 921                         status->flag |= RX_FLAG_40MHZ;
 922                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 923         } else {
 924                 int i;
 925
 926                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 927                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 928                                 status->rate_idx = i;
 929                                 break;
 930                         }
 931                 }
 932         }
 933
 934         if (rxd->channel > 14) {
 935                 status->band = IEEE80211_BAND_5GHZ;
 936                 if (!(status->flag & RX_FLAG_HT))
 937                         status->rate_idx -= 5;
 938         } else {
 939                 status->band = IEEE80211_BAND_2GHZ;
 940         }
 941         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 942                                                       status->band);
 943
 944         *qos = rxd->qos_control;
 945
 946         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 947             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 948             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 949                 status->flag |= RX_FLAG_MMIC_ERROR;
 950
 951         return le16_to_cpu(rxd->pkt_len);
 952 }
 953
 954 static struct rxd_ops rxd_8366_ap_ops = {
 955         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 956         .rxd_init       = mwl8k_rxd_8366_ap_init,
 957         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 958         .rxd_process    = mwl8k_rxd_8366_ap_process,
 959 };
 960
 961 /*
 962  * Packet reception for STA firmware.
 963  */
 964 struct mwl8k_rxd_sta {
 965         __le16 pkt_len;
 966         __u8 link_quality;
 967         __u8 noise_level;
 968         __le32 pkt_phys_addr;
 969         __le32 next_rxd_phys_addr;
 970         __le16 qos_control;
 971         __le16 rate_info;
 972         __le32 pad0[4];
 973         __u8 rssi;
 974         __u8 channel;
 975         __le16 pad1;
 976         __u8 rx_ctrl;
 977         __u8 rx_status;
 978         __u8 pad2[2];
 979 } __packed;
 980
 981 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 982 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 983 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 984 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 985 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 986 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 987
 988 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 989 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
 990 /* ICV=0 or MIC=1 */
 991 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
 992 /* Key is uploaded only in failure case */
 993 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
 994
 995 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 996 {
 997         struct mwl8k_rxd_sta *rxd = _rxd;
 998
 999         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1000         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1001 }
1002
1003 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1004 {
1005         struct mwl8k_rxd_sta *rxd = _rxd;
1006
1007         rxd->pkt_len = cpu_to_le16(len);
1008         rxd->pkt_phys_addr = cpu_to_le32(addr);
1009         wmb();
1010         rxd->rx_ctrl = 0;
1011 }
1012
1013 static int
1014 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1015                        __le16 *qos, s8 *noise)
1016 {
1017         struct mwl8k_rxd_sta *rxd = _rxd;
1018         u16 rate_info;
1019
1020         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1021                 return -1;
1022         rmb();
1023
1024         rate_info = le16_to_cpu(rxd->rate_info);
1025
1026         memset(status, 0, sizeof(*status));
1027
1028         status->signal = -rxd->rssi;
1029         *noise = -rxd->noise_level;
1030         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1031         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1032
1033         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1034                 status->flag |= RX_FLAG_SHORTPRE;
1035         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1036                 status->flag |= RX_FLAG_40MHZ;
1037         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1038                 status->flag |= RX_FLAG_SHORT_GI;
1039         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1040                 status->flag |= RX_FLAG_HT;
1041
1042         if (rxd->channel > 14) {
1043                 status->band = IEEE80211_BAND_5GHZ;
1044                 if (!(status->flag & RX_FLAG_HT))
1045                         status->rate_idx -= 5;
1046         } else {
1047                 status->band = IEEE80211_BAND_2GHZ;
1048         }
1049         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1050                                                       status->band);
1051
1052         *qos = rxd->qos_control;
1053         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1054             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1055                 status->flag |= RX_FLAG_MMIC_ERROR;
1056
1057         return le16_to_cpu(rxd->pkt_len);
1058 }
1059
1060 static struct rxd_ops rxd_sta_ops = {
1061         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1062         .rxd_init       = mwl8k_rxd_sta_init,
1063         .rxd_refill     = mwl8k_rxd_sta_refill,
1064         .rxd_process    = mwl8k_rxd_sta_process,
1065 };
1066
1067
1068 #define MWL8K_RX_DESCS          256
1069 #define MWL8K_RX_MAXSZ          3800
1070
1071 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1072 {
1073         struct mwl8k_priv *priv = hw->priv;
1074         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1075         int size;
1076         int i;
1077
1078         rxq->rxd_count = 0;
1079         rxq->head = 0;
1080         rxq->tail = 0;
1081
1082         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1083
1084         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1085         if (rxq->rxd == NULL) {
1086                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1087                 return -ENOMEM;
1088         }
1089         memset(rxq->rxd, 0, size);
1090
1091         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1092         if (rxq->buf == NULL) {
1093                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1094                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1095                 return -ENOMEM;
1096         }
1097
1098         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1099                 int desc_size;
1100                 void *rxd;
1101                 int nexti;
1102                 dma_addr_t next_dma_addr;
1103
1104                 desc_size = priv->rxd_ops->rxd_size;
1105                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1106
1107                 nexti = i + 1;
1108                 if (nexti == MWL8K_RX_DESCS)
1109                         nexti = 0;
1110                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1111
1112                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1113         }
1114
1115         return 0;
1116 }
1117
1118 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1119 {
1120         struct mwl8k_priv *priv = hw->priv;
1121         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1122         int refilled;
1123
1124         refilled = 0;
1125         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1126                 struct sk_buff *skb;
1127                 dma_addr_t addr;
1128                 int rx;
1129                 void *rxd;
1130
1131                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1132                 if (skb == NULL)
1133                         break;
1134
1135                 addr = pci_map_single(priv->pdev, skb->data,
1136                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1137
1138                 rxq->rxd_count++;
1139                 rx = rxq->tail++;
1140                 if (rxq->tail == MWL8K_RX_DESCS)
1141                         rxq->tail = 0;
1142                 rxq->buf[rx].skb = skb;
1143                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1144
1145                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1146                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1147
1148                 refilled++;
1149         }
1150
1151         return refilled;
1152 }
1153
1154 /* Must be called only when the card's reception is completely halted */
1155 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1156 {
1157         struct mwl8k_priv *priv = hw->priv;
1158         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1159         int i;
1160
1161         if (rxq->rxd == NULL)
1162                 return;
1163
1164         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1165                 if (rxq->buf[i].skb != NULL) {
1166                         pci_unmap_single(priv->pdev,
1167                                          dma_unmap_addr(&rxq->buf[i], dma),
1168                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1169                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1170
1171                         kfree_skb(rxq->buf[i].skb);
1172                         rxq->buf[i].skb = NULL;
1173                 }
1174         }
1175
1176         kfree(rxq->buf);
1177         rxq->buf = NULL;
1178
1179         pci_free_consistent(priv->pdev,
1180                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1181                             rxq->rxd, rxq->rxd_dma);
1182         rxq->rxd = NULL;
1183 }
1184
1185
1186 /*
1187  * Scan a list of BSSIDs to process for finalize join.
1188  * Allows for extension to process multiple BSSIDs.
1189  */
1190 static inline int
1191 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1192 {
1193         return priv->capture_beacon &&
1194                 ieee80211_is_beacon(wh->frame_control) &&
1195                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1196 }
1197
1198 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1199                                      struct sk_buff *skb)
1200 {
1201         struct mwl8k_priv *priv = hw->priv;
1202
1203         priv->capture_beacon = false;
1204         memset(priv->capture_bssid, 0, ETH_ALEN);
1205
1206         /*
1207          * Use GFP_ATOMIC as rxq_process is called from
1208          * the primary interrupt handler, memory allocation call
1209          * must not sleep.
1210          */
1211         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1212         if (priv->beacon_skb != NULL)
1213                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1214 }
1215
1216 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1217                                                    u8 *bssid)
1218 {
1219         struct mwl8k_vif *mwl8k_vif;
1220
1221         list_for_each_entry(mwl8k_vif,
1222                             vif_list, list) {
1223                 if (memcmp(bssid, mwl8k_vif->bssid,
1224                            ETH_ALEN) == 0)
1225                         return mwl8k_vif;
1226         }
1227
1228         return NULL;
1229 }
1230
1231 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1232 {
1233         struct mwl8k_priv *priv = hw->priv;
1234         struct mwl8k_vif *mwl8k_vif = NULL;
1235         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1236         int processed;
1237
1238         processed = 0;
1239         while (rxq->rxd_count && limit--) {
1240                 struct sk_buff *skb;
1241                 void *rxd;
1242                 int pkt_len;
1243                 struct ieee80211_rx_status status;
1244                 struct ieee80211_hdr *wh;
1245                 __le16 qos;
1246
1247                 skb = rxq->buf[rxq->head].skb;
1248                 if (skb == NULL)
1249                         break;
1250
1251                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1252
1253                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1254                                                         &priv->noise);
1255                 if (pkt_len < 0)
1256                         break;
1257
1258                 rxq->buf[rxq->head].skb = NULL;
1259
1260                 pci_unmap_single(priv->pdev,
1261                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1262                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1263                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1264
1265                 rxq->head++;
1266                 if (rxq->head == MWL8K_RX_DESCS)
1267                         rxq->head = 0;
1268
1269                 rxq->rxd_count--;
1270
1271                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1272
1273                 /*
1274                  * Check for a pending join operation.  Save a
1275                  * copy of the beacon and schedule a tasklet to
1276                  * send a FINALIZE_JOIN command to the firmware.
1277                  */
1278                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1279                         mwl8k_save_beacon(hw, skb);
1280
1281                 if (ieee80211_has_protected(wh->frame_control)) {
1282
1283                         /* Check if hw crypto has been enabled for
1284                          * this bss. If yes, set the status flags
1285                          * accordingly
1286                          */
1287                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1288                                                                 wh->addr1);
1289
1290                         if (mwl8k_vif != NULL &&
1291                             mwl8k_vif->is_hw_crypto_enabled == true) {
1292                                 /*
1293                                  * When MMIC ERROR is encountered
1294                                  * by the firmware, payload is
1295                                  * dropped and only 32 bytes of
1296                                  * mwl8k Firmware header is sent
1297                                  * to the host.
1298                                  *
1299                                  * We need to add four bytes of
1300                                  * key information.  In it
1301                                  * MAC80211 expects keyidx set to
1302                                  * 0 for triggering Counter
1303                                  * Measure of MMIC failure.
1304                                  */
1305                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1306                                         struct mwl8k_dma_data *tr;
1307                                         tr = (struct mwl8k_dma_data *)skb->data;
1308                                         memset((void *)&(tr->data), 0, 4);
1309                                         pkt_len += 4;
1310                                 }
1311
1312                                 if (!ieee80211_is_auth(wh->frame_control))
1313                                         status.flag |= RX_FLAG_IV_STRIPPED |
1314                                                        RX_FLAG_DECRYPTED |
1315                                                        RX_FLAG_MMIC_STRIPPED;
1316                         }
1317                 }
1318
1319                 skb_put(skb, pkt_len);
1320                 mwl8k_remove_dma_header(skb, qos);
1321                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1322                 ieee80211_rx_irqsafe(hw, skb);
1323
1324                 processed++;
1325         }
1326
1327         return processed;
1328 }
1329
1330
1331 /*
1332  * Packet transmission.
1333  */
1334
1335 #define MWL8K_TXD_STATUS_OK                     0x00000001
1336 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1337 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1338 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1339 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1340
1341 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1342 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1343 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1344 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1345 #define MWL8K_QOS_EOSP                          0x0010
1346
1347 struct mwl8k_tx_desc {
1348         __le32 status;
1349         __u8 data_rate;
1350         __u8 tx_priority;
1351         __le16 qos_control;
1352         __le32 pkt_phys_addr;
1353         __le16 pkt_len;
1354         __u8 dest_MAC_addr[ETH_ALEN];
1355         __le32 next_txd_phys_addr;
1356         __le32 timestamp;
1357         __le16 rate_info;
1358         __u8 peer_id;
1359         __u8 tx_frag_cnt;
1360 } __packed;
1361
1362 #define MWL8K_TX_DESCS          128
1363
1364 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1365 {
1366         struct mwl8k_priv *priv = hw->priv;
1367         struct mwl8k_tx_queue *txq = priv->txq + index;
1368         int size;
1369         int i;
1370
1371         txq->len = 0;
1372         txq->head = 0;
1373         txq->tail = 0;
1374
1375         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1376
1377         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1378         if (txq->txd == NULL) {
1379                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1380                 return -ENOMEM;
1381         }
1382         memset(txq->txd, 0, size);
1383
1384         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1385         if (txq->skb == NULL) {
1386                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1387                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1388                 return -ENOMEM;
1389         }
1390
1391         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1392                 struct mwl8k_tx_desc *tx_desc;
1393                 int nexti;
1394
1395                 tx_desc = txq->txd + i;
1396                 nexti = (i + 1) % MWL8K_TX_DESCS;
1397
1398                 tx_desc->status = 0;
1399                 tx_desc->next_txd_phys_addr =
1400                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1401         }
1402
1403         return 0;
1404 }
1405
1406 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1407 {
1408         iowrite32(MWL8K_H2A_INT_PPA_READY,
1409                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1410         iowrite32(MWL8K_H2A_INT_DUMMY,
1411                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1412         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1413 }
1414
1415 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1416 {
1417         struct mwl8k_priv *priv = hw->priv;
1418         int i;
1419
1420         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1421                 struct mwl8k_tx_queue *txq = priv->txq + i;
1422                 int fw_owned = 0;
1423                 int drv_owned = 0;
1424                 int unused = 0;
1425                 int desc;
1426
1427                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1428                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1429                         u32 status;
1430
1431                         status = le32_to_cpu(tx_desc->status);
1432                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1433                                 fw_owned++;
1434                         else
1435                                 drv_owned++;
1436
1437                         if (tx_desc->pkt_len == 0)
1438                                 unused++;
1439                 }
1440
1441                 wiphy_err(hw->wiphy,
1442                           "txq[%d] len=%d head=%d tail=%d "
1443                           "fw_owned=%d drv_owned=%d unused=%d\n",
1444                           i,
1445                           txq->len, txq->head, txq->tail,
1446                           fw_owned, drv_owned, unused);
1447         }
1448 }
1449
1450 /*
1451  * Must be called with priv->fw_mutex held and tx queues stopped.
1452  */
1453 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1454
1455 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1456 {
1457         struct mwl8k_priv *priv = hw->priv;
1458         DECLARE_COMPLETION_ONSTACK(tx_wait);
1459         int retry;
1460         int rc;
1461
1462         might_sleep();
1463
1464         /*
1465          * The TX queues are stopped at this point, so this test
1466          * doesn't need to take ->tx_lock.
1467          */
1468         if (!priv->pending_tx_pkts)
1469                 return 0;
1470
1471         retry = 0;
1472         rc = 0;
1473
1474         spin_lock_bh(&priv->tx_lock);
1475         priv->tx_wait = &tx_wait;
1476         while (!rc) {
1477                 int oldcount;
1478                 unsigned long timeout;
1479
1480                 oldcount = priv->pending_tx_pkts;
1481
1482                 spin_unlock_bh(&priv->tx_lock);
1483                 timeout = wait_for_completion_timeout(&tx_wait,
1484                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1485                 spin_lock_bh(&priv->tx_lock);
1486
1487                 if (timeout) {
1488                         WARN_ON(priv->pending_tx_pkts);
1489                         if (retry) {
1490                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1491                         }
1492                         break;
1493                 }
1494
1495                 if (priv->pending_tx_pkts < oldcount) {
1496                         wiphy_notice(hw->wiphy,
1497                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1498                                      oldcount, priv->pending_tx_pkts);
1499                         retry = 1;
1500                         continue;
1501                 }
1502
1503                 priv->tx_wait = NULL;
1504
1505                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1506                           MWL8K_TX_WAIT_TIMEOUT_MS);
1507                 mwl8k_dump_tx_rings(hw);
1508
1509                 rc = -ETIMEDOUT;
1510         }
1511         spin_unlock_bh(&priv->tx_lock);
1512
1513         return rc;
1514 }
1515
1516 #define MWL8K_TXD_SUCCESS(status)                               \
1517         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1518                      MWL8K_TXD_STATUS_OK_RETRY |                \
1519                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1520
1521 static int mwl8k_tid_queue_mapping(u8 tid)
1522 {
1523         BUG_ON(tid > 7);
1524
1525         switch (tid) {
1526         case 0:
1527         case 3:
1528                 return IEEE80211_AC_BE;
1529                 break;
1530         case 1:
1531         case 2:
1532                 return IEEE80211_AC_BK;
1533                 break;
1534         case 4:
1535         case 5:
1536                 return IEEE80211_AC_VI;
1537                 break;
1538         case 6:
1539         case 7:
1540                 return IEEE80211_AC_VO;
1541                 break;
1542         default:
1543                 return -1;
1544                 break;
1545         }
1546 }
1547
1548 /* The firmware will fill in the rate information
1549  * for each packet that gets queued in the hardware
1550  * in this structure
1551  */
1552
1553 struct rateinfo {
1554         __le16  format:1;
1555         __le16  short_gi:1;
1556         __le16  band_width:1;
1557         __le16  rate_id_mcs:6;
1558         __le16  adv_coding:2;
1559         __le16  antenna:2;
1560         __le16  act_sub_chan:2;
1561         __le16  preamble_type:1;
1562         __le16  power_id:4;
1563         __le16  antenna2:1;
1564         __le16  reserved:1;
1565         __le16  tx_bf_frame:1;
1566         __le16  green_field:1;
1567 } __packed;
1568
1569 static int
1570 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1571 {
1572         struct mwl8k_priv *priv = hw->priv;
1573         struct mwl8k_tx_queue *txq = priv->txq + index;
1574         int processed;
1575
1576         processed = 0;
1577         while (txq->len > 0 && limit--) {
1578                 int tx;
1579                 struct mwl8k_tx_desc *tx_desc;
1580                 unsigned long addr;
1581                 int size;
1582                 struct sk_buff *skb;
1583                 struct ieee80211_tx_info *info;
1584                 u32 status;
1585                 struct ieee80211_sta *sta;
1586                 struct mwl8k_sta *sta_info = NULL;
1587                 u16 rate_info;
1588                 struct rateinfo *rate;
1589                 struct ieee80211_hdr *wh;
1590
1591                 tx = txq->head;
1592                 tx_desc = txq->txd + tx;
1593
1594                 status = le32_to_cpu(tx_desc->status);
1595
1596                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1597                         if (!force)
1598                                 break;
1599                         tx_desc->status &=
1600                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1601                 }
1602
1603                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1604                 BUG_ON(txq->len == 0);
1605                 txq->len--;
1606                 priv->pending_tx_pkts--;
1607
1608                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1609                 size = le16_to_cpu(tx_desc->pkt_len);
1610                 skb = txq->skb[tx];
1611                 txq->skb[tx] = NULL;
1612
1613                 BUG_ON(skb == NULL);
1614                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1615
1616                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1617
1618                 wh = (struct ieee80211_hdr *) skb->data;
1619
1620                 /* Mark descriptor as unused */
1621                 tx_desc->pkt_phys_addr = 0;
1622                 tx_desc->pkt_len = 0;
1623
1624                 info = IEEE80211_SKB_CB(skb);
1625                 if (ieee80211_is_data(wh->frame_control)) {
1626                         sta = info->control.sta;
1627                         if (sta) {
1628                                 sta_info = MWL8K_STA(sta);
1629                                 BUG_ON(sta_info == NULL);
1630                                 rate_info = le16_to_cpu(tx_desc->rate_info);
1631                                 rate = (struct rateinfo *)&rate_info;
1632                                 /* If rate is < 6.5 Mpbs for an ht station
1633                                  * do not form an ampdu. If the station is a
1634                                  * legacy station (format = 0), do not form an
1635                                  * ampdu
1636                                  */
1637                                 if (rate->rate_id_mcs < 1 ||
1638                                     rate->format == 0) {
1639                                         sta_info->is_ampdu_allowed = false;
1640                                 } else {
1641                                         sta_info->is_ampdu_allowed = true;
1642                                 }
1643                         }
1644                 }
1645
1646                 ieee80211_tx_info_clear_status(info);
1647
1648                 /* Rate control is happening in the firmware.
1649                  * Ensure no tx rate is being reported.
1650                  */
1651                 info->status.rates[0].idx = -1;
1652                 info->status.rates[0].count = 1;
1653
1654                 if (MWL8K_TXD_SUCCESS(status))
1655                         info->flags |= IEEE80211_TX_STAT_ACK;
1656
1657                 ieee80211_tx_status_irqsafe(hw, skb);
1658
1659                 processed++;
1660         }
1661
1662         if (index < MWL8K_TX_WMM_QUEUES && processed && priv->radio_on &&
1663             !mutex_is_locked(&priv->fw_mutex))
1664                 ieee80211_wake_queue(hw, index);
1665
1666         return processed;
1667 }
1668
1669 /* must be called only when the card's transmit is completely halted */
1670 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1671 {
1672         struct mwl8k_priv *priv = hw->priv;
1673         struct mwl8k_tx_queue *txq = priv->txq + index;
1674
1675         if (txq->txd == NULL)
1676                 return;
1677
1678         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1679
1680         kfree(txq->skb);
1681         txq->skb = NULL;
1682
1683         pci_free_consistent(priv->pdev,
1684                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1685                             txq->txd, txq->txd_dma);
1686         txq->txd = NULL;
1687 }
1688
1689 /* caller must hold priv->stream_lock when calling the stream functions */
1690 struct mwl8k_ampdu_stream *
1691 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1692 {
1693         struct mwl8k_ampdu_stream *stream;
1694         struct mwl8k_priv *priv = hw->priv;
1695         int i;
1696
1697         for (i = 0; i < priv->num_ampdu_queues; i++) {
1698                 stream = &priv->ampdu[i];
1699                 if (stream->state == AMPDU_NO_STREAM) {
1700                         stream->sta = sta;
1701                         stream->state = AMPDU_STREAM_NEW;
1702                         stream->tid = tid;
1703                         stream->idx = i;
1704                         stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1705                         wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1706                                     sta->addr, tid);
1707                         return stream;
1708                 }
1709         }
1710         return NULL;
1711 }
1712
1713 static int
1714 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1715 {
1716         int ret;
1717
1718         /* if the stream has already been started, don't start it again */
1719         if (stream->state != AMPDU_STREAM_NEW)
1720                 return 0;
1721         ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1722         if (ret)
1723                 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1724                             "%d\n", stream->sta->addr, stream->tid, ret);
1725         else
1726                 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1727                             stream->sta->addr, stream->tid);
1728         return ret;
1729 }
1730
1731 static void
1732 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1733 {
1734         wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1735                     stream->tid);
1736         memset(stream, 0, sizeof(*stream));
1737 }
1738
1739 static struct mwl8k_ampdu_stream *
1740 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1741 {
1742         struct mwl8k_priv *priv = hw->priv;
1743         int i;
1744
1745         for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1746                 struct mwl8k_ampdu_stream *stream;
1747                 stream = &priv->ampdu[i];
1748                 if (stream->state == AMPDU_NO_STREAM)
1749                         continue;
1750                 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1751                     stream->tid == tid)
1752                         return stream;
1753         }
1754         return NULL;
1755 }
1756
1757 static void
1758 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1759 {
1760         struct mwl8k_priv *priv = hw->priv;
1761         struct ieee80211_tx_info *tx_info;
1762         struct mwl8k_vif *mwl8k_vif;
1763         struct ieee80211_sta *sta;
1764         struct ieee80211_hdr *wh;
1765         struct mwl8k_tx_queue *txq;
1766         struct mwl8k_tx_desc *tx;
1767         dma_addr_t dma;
1768         u32 txstatus;
1769         u8 txdatarate;
1770         u16 qos;
1771         int txpriority;
1772         u8 tid = 0;
1773         struct mwl8k_ampdu_stream *stream = NULL;
1774         bool start_ba_session = false;
1775         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1776
1777         wh = (struct ieee80211_hdr *)skb->data;
1778         if (ieee80211_is_data_qos(wh->frame_control))
1779                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1780         else
1781                 qos = 0;
1782
1783         if (priv->ap_fw)
1784                 mwl8k_encapsulate_tx_frame(skb);
1785         else
1786                 mwl8k_add_dma_header(skb, 0);
1787
1788         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1789
1790         tx_info = IEEE80211_SKB_CB(skb);
1791         sta = tx_info->control.sta;
1792         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1793
1794         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1795                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1796                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1797                 mwl8k_vif->seqno += 0x10;
1798         }
1799
1800         /* Setup firmware control bit fields for each frame type.  */
1801         txstatus = 0;
1802         txdatarate = 0;
1803         if (ieee80211_is_mgmt(wh->frame_control) ||
1804             ieee80211_is_ctl(wh->frame_control)) {
1805                 txdatarate = 0;
1806                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1807         } else if (ieee80211_is_data(wh->frame_control)) {
1808                 txdatarate = 1;
1809                 if (is_multicast_ether_addr(wh->addr1))
1810                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1811
1812                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1813                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1814                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1815                 else
1816                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1817         }
1818
1819         /* Queue ADDBA request in the respective data queue.  While setting up
1820          * the ampdu stream, mac80211 queues further packets for that
1821          * particular ra/tid pair.  However, packets piled up in the hardware
1822          * for that ra/tid pair will still go out. ADDBA request and the
1823          * related data packets going out from different queues asynchronously
1824          * will cause a shift in the receiver window which might result in
1825          * ampdu packets getting dropped at the receiver after the stream has
1826          * been setup.
1827          */
1828         if (unlikely(ieee80211_is_action(wh->frame_control) &&
1829             mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1830             mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1831             priv->ap_fw)) {
1832                 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1833                 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1834                 index = mwl8k_tid_queue_mapping(tid);
1835         }
1836
1837         txpriority = index;
1838
1839         if (ieee80211_is_data_qos(wh->frame_control) &&
1840             skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1841             sta->ht_cap.ht_supported && priv->ap_fw) {
1842                 tid = qos & 0xf;
1843                 spin_lock(&priv->stream_lock);
1844                 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1845                 if (stream != NULL) {
1846                         if (stream->state == AMPDU_STREAM_ACTIVE) {
1847                                 txpriority = stream->txq_idx;
1848                                 index = stream->txq_idx;
1849                         } else if (stream->state == AMPDU_STREAM_NEW) {
1850                                 /* We get here if the driver sends us packets
1851                                  * after we've initiated a stream, but before
1852                                  * our ampdu_action routine has been called
1853                                  * with IEEE80211_AMPDU_TX_START to get the SSN
1854                                  * for the ADDBA request.  So this packet can
1855                                  * go out with no risk of sequence number
1856                                  * mismatch.  No special handling is required.
1857                                  */
1858                         } else {
1859                                 /* Drop packets that would go out after the
1860                                  * ADDBA request was sent but before the ADDBA
1861                                  * response is received.  If we don't do this,
1862                                  * the recipient would probably receive it
1863                                  * after the ADDBA request with SSN 0.  This
1864                                  * will cause the recipient's BA receive window
1865                                  * to shift, which would cause the subsequent
1866                                  * packets in the BA stream to be discarded.
1867                                  * mac80211 queues our packets for us in this
1868                                  * case, so this is really just a safety check.
1869                                  */
1870                                 wiphy_warn(hw->wiphy,
1871                                            "Cannot send packet while ADDBA "
1872                                            "dialog is underway.\n");
1873                                 spin_unlock(&priv->stream_lock);
1874                                 dev_kfree_skb(skb);
1875                                 return;
1876                         }
1877                 } else {
1878                         /* Defer calling mwl8k_start_stream so that the current
1879                          * skb can go out before the ADDBA request.  This
1880                          * prevents sequence number mismatch at the recepient
1881                          * as described above.
1882                          */
1883                         if (MWL8K_STA(sta)->is_ampdu_allowed) {
1884                                 stream = mwl8k_add_stream(hw, sta, tid);
1885                                 if (stream != NULL)
1886                                         start_ba_session = true;
1887                         }
1888                 }
1889                 spin_unlock(&priv->stream_lock);
1890         }
1891
1892         dma = pci_map_single(priv->pdev, skb->data,
1893                                 skb->len, PCI_DMA_TODEVICE);
1894
1895         if (pci_dma_mapping_error(priv->pdev, dma)) {
1896                 wiphy_debug(hw->wiphy,
1897                             "failed to dma map skb, dropping TX frame.\n");
1898                 if (start_ba_session) {
1899                         spin_lock(&priv->stream_lock);
1900                         mwl8k_remove_stream(hw, stream);
1901                         spin_unlock(&priv->stream_lock);
1902                 }
1903                 dev_kfree_skb(skb);
1904                 return;
1905         }
1906
1907         spin_lock_bh(&priv->tx_lock);
1908
1909         txq = priv->txq + index;
1910
1911         if (index >= MWL8K_TX_WMM_QUEUES && txq->len >= MWL8K_TX_DESCS) {
1912                 /* This is the case in which the tx packet is destined for an
1913                  * AMPDU queue and that AMPDU queue is full.  Because we don't
1914                  * start and stop the AMPDU queues, we must drop these packets.
1915                  */
1916                 dev_kfree_skb(skb);
1917                 spin_unlock_bh(&priv->tx_lock);
1918                 return;
1919         }
1920
1921         BUG_ON(txq->skb[txq->tail] != NULL);
1922         txq->skb[txq->tail] = skb;
1923
1924         tx = txq->txd + txq->tail;
1925         tx->data_rate = txdatarate;
1926         tx->tx_priority = txpriority;
1927         tx->qos_control = cpu_to_le16(qos);
1928         tx->pkt_phys_addr = cpu_to_le32(dma);
1929         tx->pkt_len = cpu_to_le16(skb->len);
1930         tx->rate_info = 0;
1931         if (!priv->ap_fw && tx_info->control.sta != NULL)
1932                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1933         else
1934                 tx->peer_id = 0;
1935         wmb();
1936         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1937
1938         txq->len++;
1939         priv->pending_tx_pkts++;
1940
1941         txq->tail++;
1942         if (txq->tail == MWL8K_TX_DESCS)
1943                 txq->tail = 0;
1944
1945         if (txq->head == txq->tail && index < MWL8K_TX_WMM_QUEUES)
1946                 ieee80211_stop_queue(hw, index);
1947
1948         mwl8k_tx_start(priv);
1949
1950         spin_unlock_bh(&priv->tx_lock);
1951
1952         /* Initiate the ampdu session here */
1953         if (start_ba_session) {
1954                 spin_lock(&priv->stream_lock);
1955                 if (mwl8k_start_stream(hw, stream))
1956                         mwl8k_remove_stream(hw, stream);
1957                 spin_unlock(&priv->stream_lock);
1958         }
1959 }
1960
1961
1962 /*
1963  * Firmware access.
1964  *
1965  * We have the following requirements for issuing firmware commands:
1966  * - Some commands require that the packet transmit path is idle when
1967  *   the command is issued.  (For simplicity, we'll just quiesce the
1968  *   transmit path for every command.)
1969  * - There are certain sequences of commands that need to be issued to
1970  *   the hardware sequentially, with no other intervening commands.
1971  *
1972  * This leads to an implementation of a "firmware lock" as a mutex that
1973  * can be taken recursively, and which is taken by both the low-level
1974  * command submission function (mwl8k_post_cmd) as well as any users of
1975  * that function that require issuing of an atomic sequence of commands,
1976  * and quiesces the transmit path whenever it's taken.
1977  */
1978 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1979 {
1980         struct mwl8k_priv *priv = hw->priv;
1981
1982         if (priv->fw_mutex_owner != current) {
1983                 int rc;
1984
1985                 mutex_lock(&priv->fw_mutex);
1986                 ieee80211_stop_queues(hw);
1987
1988                 rc = mwl8k_tx_wait_empty(hw);
1989                 if (rc) {
1990                         ieee80211_wake_queues(hw);
1991                         mutex_unlock(&priv->fw_mutex);
1992
1993                         return rc;
1994                 }
1995
1996                 priv->fw_mutex_owner = current;
1997         }
1998
1999         priv->fw_mutex_depth++;
2000
2001         return 0;
2002 }
2003
2004 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2005 {
2006         struct mwl8k_priv *priv = hw->priv;
2007
2008         if (!--priv->fw_mutex_depth) {
2009                 ieee80211_wake_queues(hw);
2010                 priv->fw_mutex_owner = NULL;
2011                 mutex_unlock(&priv->fw_mutex);
2012         }
2013 }
2014
2015
2016 /*
2017  * Command processing.
2018  */
2019
2020 /* Timeout firmware commands after 10s */
2021 #define MWL8K_CMD_TIMEOUT_MS    10000
2022
2023 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2024 {
2025         DECLARE_COMPLETION_ONSTACK(cmd_wait);
2026         struct mwl8k_priv *priv = hw->priv;
2027         void __iomem *regs = priv->regs;
2028         dma_addr_t dma_addr;
2029         unsigned int dma_size;
2030         int rc;
2031         unsigned long timeout = 0;
2032         u8 buf[32];
2033
2034         cmd->result = (__force __le16) 0xffff;
2035         dma_size = le16_to_cpu(cmd->length);
2036         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2037                                   PCI_DMA_BIDIRECTIONAL);
2038         if (pci_dma_mapping_error(priv->pdev, dma_addr))
2039                 return -ENOMEM;
2040
2041         rc = mwl8k_fw_lock(hw);
2042         if (rc) {
2043                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2044                                                 PCI_DMA_BIDIRECTIONAL);
2045                 return rc;
2046         }
2047
2048         priv->hostcmd_wait = &cmd_wait;
2049         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2050         iowrite32(MWL8K_H2A_INT_DOORBELL,
2051                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2052         iowrite32(MWL8K_H2A_INT_DUMMY,
2053                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2054
2055         timeout = wait_for_completion_timeout(&cmd_wait,
2056                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2057
2058         priv->hostcmd_wait = NULL;
2059
2060         mwl8k_fw_unlock(hw);
2061
2062         pci_unmap_single(priv->pdev, dma_addr, dma_size,
2063                                         PCI_DMA_BIDIRECTIONAL);
2064
2065         if (!timeout) {
2066                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2067                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2068                           MWL8K_CMD_TIMEOUT_MS);
2069                 rc = -ETIMEDOUT;
2070         } else {
2071                 int ms;
2072
2073                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2074
2075                 rc = cmd->result ? -EINVAL : 0;
2076                 if (rc)
2077                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2078                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2079                                   le16_to_cpu(cmd->result));
2080                 else if (ms > 2000)
2081                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2082                                      mwl8k_cmd_name(cmd->code,
2083                                                     buf, sizeof(buf)),
2084                                      ms);
2085         }
2086
2087         return rc;
2088 }
2089
2090 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2091                                  struct ieee80211_vif *vif,
2092                                  struct mwl8k_cmd_pkt *cmd)
2093 {
2094         if (vif != NULL)
2095                 cmd->macid = MWL8K_VIF(vif)->macid;
2096         return mwl8k_post_cmd(hw, cmd);
2097 }
2098
2099 /*
2100  * Setup code shared between STA and AP firmware images.
2101  */
2102 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2103 {
2104         struct mwl8k_priv *priv = hw->priv;
2105
2106         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2107         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2108
2109         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2110         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2111
2112         priv->band_24.band = IEEE80211_BAND_2GHZ;
2113         priv->band_24.channels = priv->channels_24;
2114         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2115         priv->band_24.bitrates = priv->rates_24;
2116         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2117
2118         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2119 }
2120
2121 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2122 {
2123         struct mwl8k_priv *priv = hw->priv;
2124
2125         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2126         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2127
2128         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2129         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2130
2131         priv->band_50.band = IEEE80211_BAND_5GHZ;
2132         priv->band_50.channels = priv->channels_50;
2133         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2134         priv->band_50.bitrates = priv->rates_50;
2135         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2136
2137         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2138 }
2139
2140 /*
2141  * CMD_GET_HW_SPEC (STA version).
2142  */
2143 struct mwl8k_cmd_get_hw_spec_sta {
2144         struct mwl8k_cmd_pkt header;
2145         __u8 hw_rev;
2146         __u8 host_interface;
2147         __le16 num_mcaddrs;
2148         __u8 perm_addr[ETH_ALEN];
2149         __le16 region_code;
2150         __le32 fw_rev;
2151         __le32 ps_cookie;
2152         __le32 caps;
2153         __u8 mcs_bitmap[16];
2154         __le32 rx_queue_ptr;
2155         __le32 num_tx_queues;
2156         __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2157         __le32 caps2;
2158         __le32 num_tx_desc_per_queue;
2159         __le32 total_rxd;
2160 } __packed;
2161
2162 #define MWL8K_CAP_MAX_AMSDU             0x20000000
2163 #define MWL8K_CAP_GREENFIELD            0x08000000
2164 #define MWL8K_CAP_AMPDU                 0x04000000
2165 #define MWL8K_CAP_RX_STBC               0x01000000
2166 #define MWL8K_CAP_TX_STBC               0x00800000
2167 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
2168 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
2169 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
2170 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
2171 #define MWL8K_CAP_DELAY_BA              0x00003000
2172 #define MWL8K_CAP_MIMO                  0x00000200
2173 #define MWL8K_CAP_40MHZ                 0x00000100
2174 #define MWL8K_CAP_BAND_MASK             0x00000007
2175 #define MWL8K_CAP_5GHZ                  0x00000004
2176 #define MWL8K_CAP_2GHZ4                 0x00000001
2177
2178 static void
2179 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2180                   struct ieee80211_supported_band *band, u32 cap)
2181 {
2182         int rx_streams;
2183         int tx_streams;
2184
2185         band->ht_cap.ht_supported = 1;
2186
2187         if (cap & MWL8K_CAP_MAX_AMSDU)
2188                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2189         if (cap & MWL8K_CAP_GREENFIELD)
2190                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2191         if (cap & MWL8K_CAP_AMPDU) {
2192                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2193                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2194                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2195         }
2196         if (cap & MWL8K_CAP_RX_STBC)
2197                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2198         if (cap & MWL8K_CAP_TX_STBC)
2199                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2200         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2201                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2202         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2203                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2204         if (cap & MWL8K_CAP_DELAY_BA)
2205                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2206         if (cap & MWL8K_CAP_40MHZ)
2207                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2208
2209         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2210         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2211
2212         band->ht_cap.mcs.rx_mask[0] = 0xff;
2213         if (rx_streams >= 2)
2214                 band->ht_cap.mcs.rx_mask[1] = 0xff;
2215         if (rx_streams >= 3)
2216                 band->ht_cap.mcs.rx_mask[2] = 0xff;
2217         band->ht_cap.mcs.rx_mask[4] = 0x01;
2218         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2219
2220         if (rx_streams != tx_streams) {
2221                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2222                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2223                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2224         }
2225 }
2226
2227 static void
2228 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2229 {
2230         struct mwl8k_priv *priv = hw->priv;
2231
2232         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2233                 mwl8k_setup_2ghz_band(hw);
2234                 if (caps & MWL8K_CAP_MIMO)
2235                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2236         }
2237
2238         if (caps & MWL8K_CAP_5GHZ) {
2239                 mwl8k_setup_5ghz_band(hw);
2240                 if (caps & MWL8K_CAP_MIMO)
2241                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2242         }
2243 }
2244
2245 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2246 {
2247         struct mwl8k_priv *priv = hw->priv;
2248         struct mwl8k_cmd_get_hw_spec_sta *cmd;
2249         int rc;
2250         int i;
2251
2252         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2253         if (cmd == NULL)
2254                 return -ENOMEM;
2255
2256         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2257         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2258
2259         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2260         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2261         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2262         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2263         for (i = 0; i < mwl8k_tx_queues(priv); i++)
2264                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2265         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2266         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2267
2268         rc = mwl8k_post_cmd(hw, &cmd->header);
2269
2270         if (!rc) {
2271                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2272                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2273                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2274                 priv->hw_rev = cmd->hw_rev;
2275                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2276                 priv->ap_macids_supported = 0x00000000;
2277                 priv->sta_macids_supported = 0x00000001;
2278         }
2279
2280         kfree(cmd);
2281         return rc;
2282 }
2283
2284 /*
2285  * CMD_GET_HW_SPEC (AP version).
2286  */
2287 struct mwl8k_cmd_get_hw_spec_ap {
2288         struct mwl8k_cmd_pkt header;
2289         __u8 hw_rev;
2290         __u8 host_interface;
2291         __le16 num_wcb;
2292         __le16 num_mcaddrs;
2293         __u8 perm_addr[ETH_ALEN];
2294         __le16 region_code;
2295         __le16 num_antenna;
2296         __le32 fw_rev;
2297         __le32 wcbbase0;
2298         __le32 rxwrptr;
2299         __le32 rxrdptr;
2300         __le32 ps_cookie;
2301         __le32 wcbbase1;
2302         __le32 wcbbase2;
2303         __le32 wcbbase3;
2304         __le32 fw_api_version;
2305         __le32 caps;
2306         __le32 num_of_ampdu_queues;
2307         __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2308 } __packed;
2309
2310 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2311 {
2312         struct mwl8k_priv *priv = hw->priv;
2313         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2314         int rc, i;
2315         u32 api_version;
2316
2317         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2318         if (cmd == NULL)
2319                 return -ENOMEM;
2320
2321         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2322         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2323
2324         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2325         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2326
2327         rc = mwl8k_post_cmd(hw, &cmd->header);
2328
2329         if (!rc) {
2330                 int off;
2331
2332                 api_version = le32_to_cpu(cmd->fw_api_version);
2333                 if (priv->device_info->fw_api_ap != api_version) {
2334                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2335                                "  Expected %d got %d.\n", MWL8K_NAME,
2336                                priv->device_info->part_name,
2337                                priv->device_info->fw_api_ap,
2338                                api_version);
2339                         rc = -EINVAL;
2340                         goto done;
2341                 }
2342                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2343                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2344                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2345                 priv->hw_rev = cmd->hw_rev;
2346                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2347                 priv->ap_macids_supported = 0x000000ff;
2348                 priv->sta_macids_supported = 0x00000000;
2349                 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2350                 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2351                         wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2352                                    " but we only support %d.\n",
2353                                    priv->num_ampdu_queues,
2354                                    MWL8K_MAX_AMPDU_QUEUES);
2355                         priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2356                 }
2357                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2358                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2359
2360                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2361                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2362
2363                 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2364                 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2365                 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2366                 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2367
2368                 for (i = 0; i < priv->num_ampdu_queues; i++)
2369                         priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2370                                 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2371         }
2372
2373 done:
2374         kfree(cmd);
2375         return rc;
2376 }
2377
2378 /*
2379  * CMD_SET_HW_SPEC.
2380  */
2381 struct mwl8k_cmd_set_hw_spec {
2382         struct mwl8k_cmd_pkt header;
2383         __u8 hw_rev;
2384         __u8 host_interface;
2385         __le16 num_mcaddrs;
2386         __u8 perm_addr[ETH_ALEN];
2387         __le16 region_code;
2388         __le32 fw_rev;
2389         __le32 ps_cookie;
2390         __le32 caps;
2391         __le32 rx_queue_ptr;
2392         __le32 num_tx_queues;
2393         __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2394         __le32 flags;
2395         __le32 num_tx_desc_per_queue;
2396         __le32 total_rxd;
2397 } __packed;
2398
2399 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2400  * packets to expire 500 ms after the timestamp in the tx descriptor.  That is,
2401  * the packets that are queued for more than 500ms, will be dropped in the
2402  * hardware. This helps minimizing the issues caused due to head-of-line
2403  * blocking where a slow client can hog the bandwidth and affect traffic to a
2404  * faster client.
2405  */
2406 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY  0x00000400
2407 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2408 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2409 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2410
2411 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2412 {
2413         struct mwl8k_priv *priv = hw->priv;
2414         struct mwl8k_cmd_set_hw_spec *cmd;
2415         int rc;
2416         int i;
2417
2418         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2419         if (cmd == NULL)
2420                 return -ENOMEM;
2421
2422         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2423         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2424
2425         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2426         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2427         cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2428
2429         /*
2430          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2431          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2432          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2433          * priority is interpreted the right way in firmware.
2434          */
2435         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2436                 int j = mwl8k_tx_queues(priv) - 1 - i;
2437                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2438         }
2439
2440         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2441                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2442                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2443         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2444         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2445
2446         rc = mwl8k_post_cmd(hw, &cmd->header);
2447         kfree(cmd);
2448
2449         return rc;
2450 }
2451
2452 /*
2453  * CMD_MAC_MULTICAST_ADR.
2454  */
2455 struct mwl8k_cmd_mac_multicast_adr {
2456         struct mwl8k_cmd_pkt header;
2457         __le16 action;
2458         __le16 numaddr;
2459         __u8 addr[0][ETH_ALEN];
2460 };
2461
2462 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2463 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2464 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2465 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2466
2467 static struct mwl8k_cmd_pkt *
2468 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2469                               struct netdev_hw_addr_list *mc_list)
2470 {
2471         struct mwl8k_priv *priv = hw->priv;
2472         struct mwl8k_cmd_mac_multicast_adr *cmd;
2473         int size;
2474         int mc_count = 0;
2475
2476         if (mc_list)
2477                 mc_count = netdev_hw_addr_list_count(mc_list);
2478
2479         if (allmulti || mc_count > priv->num_mcaddrs) {
2480                 allmulti = 1;
2481                 mc_count = 0;
2482         }
2483
2484         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2485
2486         cmd = kzalloc(size, GFP_ATOMIC);
2487         if (cmd == NULL)
2488                 return NULL;
2489
2490         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2491         cmd->header.length = cpu_to_le16(size);
2492         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2493                                   MWL8K_ENABLE_RX_BROADCAST);
2494
2495         if (allmulti) {
2496                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2497         } else if (mc_count) {
2498                 struct netdev_hw_addr *ha;
2499                 int i = 0;
2500
2501                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2502                 cmd->numaddr = cpu_to_le16(mc_count);
2503                 netdev_hw_addr_list_for_each(ha, mc_list) {
2504                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2505                 }
2506         }
2507
2508         return &cmd->header;
2509 }
2510
2511 /*
2512  * CMD_GET_STAT.
2513  */
2514 struct mwl8k_cmd_get_stat {
2515         struct mwl8k_cmd_pkt header;
2516         __le32 stats[64];
2517 } __packed;
2518
2519 #define MWL8K_STAT_ACK_FAILURE  9
2520 #define MWL8K_STAT_RTS_FAILURE  12
2521 #define MWL8K_STAT_FCS_ERROR    24
2522 #define MWL8K_STAT_RTS_SUCCESS  11
2523
2524 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2525                               struct ieee80211_low_level_stats *stats)
2526 {
2527         struct mwl8k_cmd_get_stat *cmd;
2528         int rc;
2529
2530         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2531         if (cmd == NULL)
2532                 return -ENOMEM;
2533
2534         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2535         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2536
2537         rc = mwl8k_post_cmd(hw, &cmd->header);
2538         if (!rc) {
2539                 stats->dot11ACKFailureCount =
2540                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2541                 stats->dot11RTSFailureCount =
2542                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2543                 stats->dot11FCSErrorCount =
2544                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2545                 stats->dot11RTSSuccessCount =
2546                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2547         }
2548         kfree(cmd);
2549
2550         return rc;
2551 }
2552
2553 /*
2554  * CMD_RADIO_CONTROL.
2555  */
2556 struct mwl8k_cmd_radio_control {
2557         struct mwl8k_cmd_pkt header;
2558         __le16 action;
2559         __le16 control;
2560         __le16 radio_on;
2561 } __packed;
2562
2563 static int
2564 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2565 {
2566         struct mwl8k_priv *priv = hw->priv;
2567         struct mwl8k_cmd_radio_control *cmd;
2568         int rc;
2569
2570         if (enable == priv->radio_on && !force)
2571                 return 0;
2572
2573         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2574         if (cmd == NULL)
2575                 return -ENOMEM;
2576
2577         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2578         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2579         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2580         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2581         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2582
2583         rc = mwl8k_post_cmd(hw, &cmd->header);
2584         kfree(cmd);
2585
2586         if (!rc)
2587                 priv->radio_on = enable;
2588
2589         return rc;
2590 }
2591
2592 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2593 {
2594         return mwl8k_cmd_radio_control(hw, 0, 0);
2595 }
2596
2597 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2598 {
2599         return mwl8k_cmd_radio_control(hw, 1, 0);
2600 }
2601
2602 static int
2603 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2604 {
2605         struct mwl8k_priv *priv = hw->priv;
2606
2607         priv->radio_short_preamble = short_preamble;
2608
2609         return mwl8k_cmd_radio_control(hw, 1, 1);
2610 }
2611
2612 /*
2613  * CMD_RF_TX_POWER.
2614  */
2615 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2616
2617 struct mwl8k_cmd_rf_tx_power {
2618         struct mwl8k_cmd_pkt header;
2619         __le16 action;
2620         __le16 support_level;
2621         __le16 current_level;
2622         __le16 reserved;
2623         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2624 } __packed;
2625
2626 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2627 {
2628         struct mwl8k_cmd_rf_tx_power *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_RF_TX_POWER);
2636         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2637         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2638         cmd->support_level = cpu_to_le16(dBm);
2639
2640         rc = mwl8k_post_cmd(hw, &cmd->header);
2641         kfree(cmd);
2642
2643         return rc;
2644 }
2645
2646 /*
2647  * CMD_TX_POWER.
2648  */
2649 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2650
2651 struct mwl8k_cmd_tx_power {
2652         struct mwl8k_cmd_pkt header;
2653         __le16 action;
2654         __le16 band;
2655         __le16 channel;
2656         __le16 bw;
2657         __le16 sub_ch;
2658         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2659 } __attribute__((packed));
2660
2661 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2662                                      struct ieee80211_conf *conf,
2663                                      unsigned short pwr)
2664 {
2665         struct ieee80211_channel *channel = conf->channel;
2666         struct mwl8k_cmd_tx_power *cmd;
2667         int rc;
2668         int i;
2669
2670         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2671         if (cmd == NULL)
2672                 return -ENOMEM;
2673
2674         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2675         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2676         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2677
2678         if (channel->band == IEEE80211_BAND_2GHZ)
2679                 cmd->band = cpu_to_le16(0x1);
2680         else if (channel->band == IEEE80211_BAND_5GHZ)
2681                 cmd->band = cpu_to_le16(0x4);
2682
2683         cmd->channel = channel->hw_value;
2684
2685         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2686             conf->channel_type == NL80211_CHAN_HT20) {
2687                 cmd->bw = cpu_to_le16(0x2);
2688         } else {
2689                 cmd->bw = cpu_to_le16(0x4);
2690                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2691                         cmd->sub_ch = cpu_to_le16(0x3);
2692                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2693                         cmd->sub_ch = cpu_to_le16(0x1);
2694         }
2695
2696         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2697                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2698
2699         rc = mwl8k_post_cmd(hw, &cmd->header);
2700         kfree(cmd);
2701
2702         return rc;
2703 }
2704
2705 /*
2706  * CMD_RF_ANTENNA.
2707  */
2708 struct mwl8k_cmd_rf_antenna {
2709         struct mwl8k_cmd_pkt header;
2710         __le16 antenna;
2711         __le16 mode;
2712 } __packed;
2713
2714 #define MWL8K_RF_ANTENNA_RX             1
2715 #define MWL8K_RF_ANTENNA_TX             2
2716
2717 static int
2718 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2719 {
2720         struct mwl8k_cmd_rf_antenna *cmd;
2721         int rc;
2722
2723         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2724         if (cmd == NULL)
2725                 return -ENOMEM;
2726
2727         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2728         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2729         cmd->antenna = cpu_to_le16(antenna);
2730         cmd->mode = cpu_to_le16(mask);
2731
2732         rc = mwl8k_post_cmd(hw, &cmd->header);
2733         kfree(cmd);
2734
2735         return rc;
2736 }
2737
2738 /*
2739  * CMD_SET_BEACON.
2740  */
2741 struct mwl8k_cmd_set_beacon {
2742         struct mwl8k_cmd_pkt header;
2743         __le16 beacon_len;
2744         __u8 beacon[0];
2745 };
2746
2747 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2748                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2749 {
2750         struct mwl8k_cmd_set_beacon *cmd;
2751         int rc;
2752
2753         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2754         if (cmd == NULL)
2755                 return -ENOMEM;
2756
2757         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2758         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2759         cmd->beacon_len = cpu_to_le16(len);
2760         memcpy(cmd->beacon, beacon, len);
2761
2762         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2763         kfree(cmd);
2764
2765         return rc;
2766 }
2767
2768 /*
2769  * CMD_SET_PRE_SCAN.
2770  */
2771 struct mwl8k_cmd_set_pre_scan {
2772         struct mwl8k_cmd_pkt header;
2773 } __packed;
2774
2775 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2776 {
2777         struct mwl8k_cmd_set_pre_scan *cmd;
2778         int rc;
2779
2780         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2781         if (cmd == NULL)
2782                 return -ENOMEM;
2783
2784         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2785         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2786
2787         rc = mwl8k_post_cmd(hw, &cmd->header);
2788         kfree(cmd);
2789
2790         return rc;
2791 }
2792
2793 /*
2794  * CMD_SET_POST_SCAN.
2795  */
2796 struct mwl8k_cmd_set_post_scan {
2797         struct mwl8k_cmd_pkt header;
2798         __le32 isibss;
2799         __u8 bssid[ETH_ALEN];
2800 } __packed;
2801
2802 static int
2803 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2804 {
2805         struct mwl8k_cmd_set_post_scan *cmd;
2806         int rc;
2807
2808         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2809         if (cmd == NULL)
2810                 return -ENOMEM;
2811
2812         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2813         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2814         cmd->isibss = 0;
2815         memcpy(cmd->bssid, mac, ETH_ALEN);
2816
2817         rc = mwl8k_post_cmd(hw, &cmd->header);
2818         kfree(cmd);
2819
2820         return rc;
2821 }
2822
2823 /*
2824  * CMD_SET_RF_CHANNEL.
2825  */
2826 struct mwl8k_cmd_set_rf_channel {
2827         struct mwl8k_cmd_pkt header;
2828         __le16 action;
2829         __u8 current_channel;
2830         __le32 channel_flags;
2831 } __packed;
2832
2833 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2834                                     struct ieee80211_conf *conf)
2835 {
2836         struct ieee80211_channel *channel = conf->channel;
2837         struct mwl8k_cmd_set_rf_channel *cmd;
2838         int rc;
2839
2840         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2841         if (cmd == NULL)
2842                 return -ENOMEM;
2843
2844         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2845         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2846         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2847         cmd->current_channel = channel->hw_value;
2848
2849         if (channel->band == IEEE80211_BAND_2GHZ)
2850                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2851         else if (channel->band == IEEE80211_BAND_5GHZ)
2852                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2853
2854         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2855             conf->channel_type == NL80211_CHAN_HT20)
2856                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2857         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2858                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2859         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2860                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2861
2862         rc = mwl8k_post_cmd(hw, &cmd->header);
2863         kfree(cmd);
2864
2865         return rc;
2866 }
2867
2868 /*
2869  * CMD_SET_AID.
2870  */
2871 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2872 #define MWL8K_FRAME_PROT_11G                            0x07
2873 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2874 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2875
2876 struct mwl8k_cmd_update_set_aid {
2877         struct  mwl8k_cmd_pkt header;
2878         __le16  aid;
2879
2880          /* AP's MAC address (BSSID) */
2881         __u8    bssid[ETH_ALEN];
2882         __le16  protection_mode;
2883         __u8    supp_rates[14];
2884 } __packed;
2885
2886 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2887 {
2888         int i;
2889         int j;
2890
2891         /*
2892          * Clear nonstandard rates 4 and 13.
2893          */
2894         mask &= 0x1fef;
2895
2896         for (i = 0, j = 0; i < 14; i++) {
2897                 if (mask & (1 << i))
2898                         rates[j++] = mwl8k_rates_24[i].hw_value;
2899         }
2900 }
2901
2902 static int
2903 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2904                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2905 {
2906         struct mwl8k_cmd_update_set_aid *cmd;
2907         u16 prot_mode;
2908         int rc;
2909
2910         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2911         if (cmd == NULL)
2912                 return -ENOMEM;
2913
2914         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2915         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2916         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2917         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2918
2919         if (vif->bss_conf.use_cts_prot) {
2920                 prot_mode = MWL8K_FRAME_PROT_11G;
2921         } else {
2922                 switch (vif->bss_conf.ht_operation_mode &
2923                         IEEE80211_HT_OP_MODE_PROTECTION) {
2924                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2925                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2926                         break;
2927                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2928                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2929                         break;
2930                 default:
2931                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2932                         break;
2933                 }
2934         }
2935         cmd->protection_mode = cpu_to_le16(prot_mode);
2936
2937         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2938
2939         rc = mwl8k_post_cmd(hw, &cmd->header);
2940         kfree(cmd);
2941
2942         return rc;
2943 }
2944
2945 /*
2946  * CMD_SET_RATE.
2947  */
2948 struct mwl8k_cmd_set_rate {
2949         struct  mwl8k_cmd_pkt header;
2950         __u8    legacy_rates[14];
2951
2952         /* Bitmap for supported MCS codes.  */
2953         __u8    mcs_set[16];
2954         __u8    reserved[16];
2955 } __packed;
2956
2957 static int
2958 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2959                    u32 legacy_rate_mask, u8 *mcs_rates)
2960 {
2961         struct mwl8k_cmd_set_rate *cmd;
2962         int rc;
2963
2964         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2965         if (cmd == NULL)
2966                 return -ENOMEM;
2967
2968         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2969         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2970         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2971         memcpy(cmd->mcs_set, mcs_rates, 16);
2972
2973         rc = mwl8k_post_cmd(hw, &cmd->header);
2974         kfree(cmd);
2975
2976         return rc;
2977 }
2978
2979 /*
2980  * CMD_FINALIZE_JOIN.
2981  */
2982 #define MWL8K_FJ_BEACON_MAXLEN  128
2983
2984 struct mwl8k_cmd_finalize_join {
2985         struct mwl8k_cmd_pkt header;
2986         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2987         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2988 } __packed;
2989
2990 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2991                                    int framelen, int dtim)
2992 {
2993         struct mwl8k_cmd_finalize_join *cmd;
2994         struct ieee80211_mgmt *payload = frame;
2995         int payload_len;
2996         int rc;
2997
2998         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2999         if (cmd == NULL)
3000                 return -ENOMEM;
3001
3002         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3003         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3004         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3005
3006         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3007         if (payload_len < 0)
3008                 payload_len = 0;
3009         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3010                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3011
3012         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3013
3014         rc = mwl8k_post_cmd(hw, &cmd->header);
3015         kfree(cmd);
3016
3017         return rc;
3018 }
3019
3020 /*
3021  * CMD_SET_RTS_THRESHOLD.
3022  */
3023 struct mwl8k_cmd_set_rts_threshold {
3024         struct mwl8k_cmd_pkt header;
3025         __le16 action;
3026         __le16 threshold;
3027 } __packed;
3028
3029 static int
3030 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3031 {
3032         struct mwl8k_cmd_set_rts_threshold *cmd;
3033         int rc;
3034
3035         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3036         if (cmd == NULL)
3037                 return -ENOMEM;
3038
3039         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3040         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3041         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3042         cmd->threshold = cpu_to_le16(rts_thresh);
3043
3044         rc = mwl8k_post_cmd(hw, &cmd->header);
3045         kfree(cmd);
3046
3047         return rc;
3048 }
3049
3050 /*
3051  * CMD_SET_SLOT.
3052  */
3053 struct mwl8k_cmd_set_slot {
3054         struct mwl8k_cmd_pkt header;
3055         __le16 action;
3056         __u8 short_slot;
3057 } __packed;
3058
3059 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3060 {
3061         struct mwl8k_cmd_set_slot *cmd;
3062         int rc;
3063
3064         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3065         if (cmd == NULL)
3066                 return -ENOMEM;
3067
3068         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3069         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3070         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3071         cmd->short_slot = short_slot_time;
3072
3073         rc = mwl8k_post_cmd(hw, &cmd->header);
3074         kfree(cmd);
3075
3076         return rc;
3077 }
3078
3079 /*
3080  * CMD_SET_EDCA_PARAMS.
3081  */
3082 struct mwl8k_cmd_set_edca_params {
3083         struct mwl8k_cmd_pkt header;
3084
3085         /* See MWL8K_SET_EDCA_XXX below */
3086         __le16 action;
3087
3088         /* TX opportunity in units of 32 us */
3089         __le16 txop;
3090
3091         union {
3092                 struct {
3093                         /* Log exponent of max contention period: 0...15 */
3094                         __le32 log_cw_max;
3095
3096                         /* Log exponent of min contention period: 0...15 */
3097                         __le32 log_cw_min;
3098
3099                         /* Adaptive interframe spacing in units of 32us */
3100                         __u8 aifs;
3101
3102                         /* TX queue to configure */
3103                         __u8 txq;
3104                 } ap;
3105                 struct {
3106                         /* Log exponent of max contention period: 0...15 */
3107                         __u8 log_cw_max;
3108
3109                         /* Log exponent of min contention period: 0...15 */
3110                         __u8 log_cw_min;
3111
3112                         /* Adaptive interframe spacing in units of 32us */
3113                         __u8 aifs;
3114
3115                         /* TX queue to configure */
3116                         __u8 txq;
3117                 } sta;
3118         };
3119 } __packed;
3120
3121 #define MWL8K_SET_EDCA_CW       0x01
3122 #define MWL8K_SET_EDCA_TXOP     0x02
3123 #define MWL8K_SET_EDCA_AIFS     0x04
3124
3125 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
3126                                  MWL8K_SET_EDCA_TXOP | \
3127                                  MWL8K_SET_EDCA_AIFS)
3128
3129 static int
3130 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3131                           __u16 cw_min, __u16 cw_max,
3132                           __u8 aifs, __u16 txop)
3133 {
3134         struct mwl8k_priv *priv = hw->priv;
3135         struct mwl8k_cmd_set_edca_params *cmd;
3136         int rc;
3137
3138         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3139         if (cmd == NULL)
3140                 return -ENOMEM;
3141
3142         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3143         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3144         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3145         cmd->txop = cpu_to_le16(txop);
3146         if (priv->ap_fw) {
3147                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3148                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3149                 cmd->ap.aifs = aifs;
3150                 cmd->ap.txq = qnum;
3151         } else {
3152                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3153                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3154                 cmd->sta.aifs = aifs;
3155                 cmd->sta.txq = qnum;
3156         }
3157
3158         rc = mwl8k_post_cmd(hw, &cmd->header);
3159         kfree(cmd);
3160
3161         return rc;
3162 }
3163
3164 /*
3165  * CMD_SET_WMM_MODE.
3166  */
3167 struct mwl8k_cmd_set_wmm_mode {
3168         struct mwl8k_cmd_pkt header;
3169         __le16 action;
3170 } __packed;
3171
3172 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3173 {
3174         struct mwl8k_priv *priv = hw->priv;
3175         struct mwl8k_cmd_set_wmm_mode *cmd;
3176         int rc;
3177
3178         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3179         if (cmd == NULL)
3180                 return -ENOMEM;
3181
3182         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3183         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3184         cmd->action = cpu_to_le16(!!enable);
3185
3186         rc = mwl8k_post_cmd(hw, &cmd->header);
3187         kfree(cmd);
3188
3189         if (!rc)
3190                 priv->wmm_enabled = enable;
3191
3192         return rc;
3193 }
3194
3195 /*
3196  * CMD_MIMO_CONFIG.
3197  */
3198 struct mwl8k_cmd_mimo_config {
3199         struct mwl8k_cmd_pkt header;
3200         __le32 action;
3201         __u8 rx_antenna_map;
3202         __u8 tx_antenna_map;
3203 } __packed;
3204
3205 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3206 {
3207         struct mwl8k_cmd_mimo_config *cmd;
3208         int rc;
3209
3210         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3211         if (cmd == NULL)
3212                 return -ENOMEM;
3213
3214         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3215         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3216         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3217         cmd->rx_antenna_map = rx;
3218         cmd->tx_antenna_map = tx;
3219
3220         rc = mwl8k_post_cmd(hw, &cmd->header);
3221         kfree(cmd);
3222
3223         return rc;
3224 }
3225
3226 /*
3227  * CMD_USE_FIXED_RATE (STA version).
3228  */
3229 struct mwl8k_cmd_use_fixed_rate_sta {
3230         struct mwl8k_cmd_pkt header;
3231         __le32 action;
3232         __le32 allow_rate_drop;
3233         __le32 num_rates;
3234         struct {
3235                 __le32 is_ht_rate;
3236                 __le32 enable_retry;
3237                 __le32 rate;
3238                 __le32 retry_count;
3239         } rate_entry[8];
3240         __le32 rate_type;
3241         __le32 reserved1;
3242         __le32 reserved2;
3243 } __packed;
3244
3245 #define MWL8K_USE_AUTO_RATE     0x0002
3246 #define MWL8K_UCAST_RATE        0
3247
3248 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3249 {
3250         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3251         int rc;
3252
3253         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3254         if (cmd == NULL)
3255                 return -ENOMEM;
3256
3257         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3258         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3259         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3260         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3261
3262         rc = mwl8k_post_cmd(hw, &cmd->header);
3263         kfree(cmd);
3264
3265         return rc;
3266 }
3267
3268 /*
3269  * CMD_USE_FIXED_RATE (AP version).
3270  */
3271 struct mwl8k_cmd_use_fixed_rate_ap {
3272         struct mwl8k_cmd_pkt header;
3273         __le32 action;
3274         __le32 allow_rate_drop;
3275         __le32 num_rates;
3276         struct mwl8k_rate_entry_ap {
3277                 __le32 is_ht_rate;
3278                 __le32 enable_retry;
3279                 __le32 rate;
3280                 __le32 retry_count;
3281         } rate_entry[4];
3282         u8 multicast_rate;
3283         u8 multicast_rate_type;
3284         u8 management_rate;
3285 } __packed;
3286
3287 static int
3288 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3289 {
3290         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3291         int rc;
3292
3293         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3294         if (cmd == NULL)
3295                 return -ENOMEM;
3296
3297         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3298         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3299         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3300         cmd->multicast_rate = mcast;
3301         cmd->management_rate = mgmt;
3302
3303         rc = mwl8k_post_cmd(hw, &cmd->header);
3304         kfree(cmd);
3305
3306         return rc;
3307 }
3308
3309 /*
3310  * CMD_ENABLE_SNIFFER.
3311  */
3312 struct mwl8k_cmd_enable_sniffer {
3313         struct mwl8k_cmd_pkt header;
3314         __le32 action;
3315 } __packed;
3316
3317 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3318 {
3319         struct mwl8k_cmd_enable_sniffer *cmd;
3320         int rc;
3321
3322         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3323         if (cmd == NULL)
3324                 return -ENOMEM;
3325
3326         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3327         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3328         cmd->action = cpu_to_le32(!!enable);
3329
3330         rc = mwl8k_post_cmd(hw, &cmd->header);
3331         kfree(cmd);
3332
3333         return rc;
3334 }
3335
3336 /*
3337  * CMD_SET_MAC_ADDR.
3338  */
3339 struct mwl8k_cmd_set_mac_addr {
3340         struct mwl8k_cmd_pkt header;
3341         union {
3342                 struct {
3343                         __le16 mac_type;
3344                         __u8 mac_addr[ETH_ALEN];
3345                 } mbss;
3346                 __u8 mac_addr[ETH_ALEN];
3347         };
3348 } __packed;
3349
3350 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3351 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3352 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3353 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3354
3355 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3356                                   struct ieee80211_vif *vif, u8 *mac)
3357 {
3358         struct mwl8k_priv *priv = hw->priv;
3359         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3360         struct mwl8k_cmd_set_mac_addr *cmd;
3361         int mac_type;
3362         int rc;
3363
3364         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3365         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3366                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3367                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3368                 else
3369                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3370         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3371                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3372                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3373                 else
3374                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3375         }
3376
3377         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3378         if (cmd == NULL)
3379                 return -ENOMEM;
3380
3381         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3382         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3383         if (priv->ap_fw) {
3384                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3385                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3386         } else {
3387                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3388         }
3389
3390         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3391         kfree(cmd);
3392
3393         return rc;
3394 }
3395
3396 /*
3397  * CMD_SET_RATEADAPT_MODE.
3398  */
3399 struct mwl8k_cmd_set_rate_adapt_mode {
3400         struct mwl8k_cmd_pkt header;
3401         __le16 action;
3402         __le16 mode;
3403 } __packed;
3404
3405 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3406 {
3407         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3408         int rc;
3409
3410         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3411         if (cmd == NULL)
3412                 return -ENOMEM;
3413
3414         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3415         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3416         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3417         cmd->mode = cpu_to_le16(mode);
3418
3419         rc = mwl8k_post_cmd(hw, &cmd->header);
3420         kfree(cmd);
3421
3422         return rc;
3423 }
3424
3425 /*
3426  * CMD_GET_WATCHDOG_BITMAP.
3427  */
3428 struct mwl8k_cmd_get_watchdog_bitmap {
3429         struct mwl8k_cmd_pkt header;
3430         u8      bitmap;
3431 } __packed;
3432
3433 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3434 {
3435         struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3436         int rc;
3437
3438         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3439         if (cmd == NULL)
3440                 return -ENOMEM;
3441
3442         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3443         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3444
3445         rc = mwl8k_post_cmd(hw, &cmd->header);
3446         if (!rc)
3447                 *bitmap = cmd->bitmap;
3448
3449         kfree(cmd);
3450
3451         return rc;
3452 }
3453
3454 #define INVALID_BA      0xAA
3455 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3456 {
3457         int rc;
3458         u8 bitmap = 0, stream_index;
3459         struct mwl8k_ampdu_stream *streams;
3460         struct mwl8k_priv *priv =
3461                 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3462
3463         rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3464         if (rc)
3465                 return;
3466
3467         if (bitmap == INVALID_BA)
3468                 return;
3469
3470         /* the bitmap is the hw queue number.  Map it to the ampdu queue. */
3471         stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3472
3473         BUG_ON(stream_index >= priv->num_ampdu_queues);
3474
3475         streams = &priv->ampdu[stream_index];
3476
3477         if (streams->state == AMPDU_STREAM_ACTIVE)
3478                 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3479
3480         return;
3481 }
3482
3483
3484 /*
3485  * CMD_BSS_START.
3486  */
3487 struct mwl8k_cmd_bss_start {
3488         struct mwl8k_cmd_pkt header;
3489         __le32 enable;
3490 } __packed;
3491
3492 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3493                                struct ieee80211_vif *vif, int enable)
3494 {
3495         struct mwl8k_cmd_bss_start *cmd;
3496         int rc;
3497
3498         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3499         if (cmd == NULL)
3500                 return -ENOMEM;
3501
3502         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3503         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3504         cmd->enable = cpu_to_le32(enable);
3505
3506         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3507         kfree(cmd);
3508
3509         return rc;
3510 }
3511
3512 /*
3513  * CMD_BASTREAM.
3514  */
3515
3516 /*
3517  * UPSTREAM is tx direction
3518  */
3519 #define BASTREAM_FLAG_DIRECTION_UPSTREAM        0x00
3520 #define BASTREAM_FLAG_IMMEDIATE_TYPE            0x01
3521
3522 enum {
3523         MWL8K_BA_CREATE,
3524         MWL8K_BA_UPDATE,
3525         MWL8K_BA_DESTROY,
3526         MWL8K_BA_FLUSH,
3527         MWL8K_BA_CHECK,
3528 } ba_stream_action_type;
3529
3530
3531 struct mwl8k_create_ba_stream {
3532         __le32  flags;
3533         __le32  idle_thrs;
3534         __le32  bar_thrs;
3535         __le32  window_size;
3536         u8      peer_mac_addr[6];
3537         u8      dialog_token;
3538         u8      tid;
3539         u8      queue_id;
3540         u8      param_info;
3541         __le32  ba_context;
3542         u8      reset_seq_no_flag;
3543         __le16  curr_seq_no;
3544         u8      sta_src_mac_addr[6];
3545 } __packed;
3546
3547 struct mwl8k_destroy_ba_stream {
3548         __le32  flags;
3549         __le32  ba_context;
3550 } __packed;
3551
3552 struct mwl8k_cmd_bastream {
3553         struct mwl8k_cmd_pkt    header;
3554         __le32  action;
3555         union {
3556                 struct mwl8k_create_ba_stream   create_params;
3557                 struct mwl8k_destroy_ba_stream  destroy_params;
3558         };
3559 } __packed;
3560
3561 static int
3562 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3563 {
3564         struct mwl8k_cmd_bastream *cmd;
3565         int rc;
3566
3567         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3568         if (cmd == NULL)
3569                 return -ENOMEM;
3570
3571         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3572         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3573
3574         cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3575
3576         cmd->create_params.queue_id = stream->idx;
3577         memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3578                ETH_ALEN);
3579         cmd->create_params.tid = stream->tid;
3580
3581         cmd->create_params.flags =
3582                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3583                 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3584
3585         rc = mwl8k_post_cmd(hw, &cmd->header);
3586
3587         kfree(cmd);
3588
3589         return rc;
3590 }
3591
3592 static int
3593 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3594                 u8 buf_size)
3595 {
3596         struct mwl8k_cmd_bastream *cmd;
3597         int rc;
3598
3599         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3600         if (cmd == NULL)
3601                 return -ENOMEM;
3602
3603
3604         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3605         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3606
3607         cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3608
3609         cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3610         cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3611         cmd->create_params.queue_id = stream->idx;
3612
3613         memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3614         cmd->create_params.tid = stream->tid;
3615         cmd->create_params.curr_seq_no = cpu_to_le16(0);
3616         cmd->create_params.reset_seq_no_flag = 1;
3617
3618         cmd->create_params.param_info =
3619                 (stream->sta->ht_cap.ampdu_factor &
3620                  IEEE80211_HT_AMPDU_PARM_FACTOR) |
3621                 ((stream->sta->ht_cap.ampdu_density << 2) &
3622                  IEEE80211_HT_AMPDU_PARM_DENSITY);
3623
3624         cmd->create_params.flags =
3625                 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3626                                         BASTREAM_FLAG_DIRECTION_UPSTREAM);
3627
3628         rc = mwl8k_post_cmd(hw, &cmd->header);
3629
3630         wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3631                 stream->sta->addr, stream->tid);
3632         kfree(cmd);
3633
3634         return rc;
3635 }
3636
3637 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3638                              struct mwl8k_ampdu_stream *stream)
3639 {
3640         struct mwl8k_cmd_bastream *cmd;
3641
3642         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3643         if (cmd == NULL)
3644                 return;
3645
3646         cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3647         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3648         cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3649
3650         cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3651         mwl8k_post_cmd(hw, &cmd->header);
3652
3653         wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3654
3655         kfree(cmd);
3656 }
3657
3658 /*
3659  * CMD_SET_NEW_STN.
3660  */
3661 struct mwl8k_cmd_set_new_stn {
3662         struct mwl8k_cmd_pkt header;
3663         __le16 aid;
3664         __u8 mac_addr[6];
3665         __le16 stn_id;
3666         __le16 action;
3667         __le16 rsvd;
3668         __le32 legacy_rates;
3669         __u8 ht_rates[4];
3670         __le16 cap_info;
3671         __le16 ht_capabilities_info;
3672         __u8 mac_ht_param_info;
3673         __u8 rev;
3674         __u8 control_channel;
3675         __u8 add_channel;
3676         __le16 op_mode;
3677         __le16 stbc;
3678         __u8 add_qos_info;
3679         __u8 is_qos_sta;
3680         __le32 fw_sta_ptr;
3681 } __packed;
3682
3683 #define MWL8K_STA_ACTION_ADD            0
3684 #define MWL8K_STA_ACTION_REMOVE         2
3685
3686 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3687                                      struct ieee80211_vif *vif,
3688                                      struct ieee80211_sta *sta)
3689 {
3690         struct mwl8k_cmd_set_new_stn *cmd;
3691         u32 rates;
3692         int rc;
3693
3694         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3695         if (cmd == NULL)
3696                 return -ENOMEM;
3697
3698         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3699         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3700         cmd->aid = cpu_to_le16(sta->aid);
3701         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3702         cmd->stn_id = cpu_to_le16(sta->aid);
3703         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3704         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3705                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3706         else
3707                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3708         cmd->legacy_rates = cpu_to_le32(rates);
3709         if (sta->ht_cap.ht_supported) {
3710                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3711                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3712                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3713                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3714                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3715                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3716                         ((sta->ht_cap.ampdu_density & 7) << 2);
3717                 cmd->is_qos_sta = 1;
3718         }
3719
3720         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3721         kfree(cmd);
3722
3723         return rc;
3724 }
3725
3726 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3727                                           struct ieee80211_vif *vif)
3728 {
3729         struct mwl8k_cmd_set_new_stn *cmd;
3730         int rc;
3731
3732         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3733         if (cmd == NULL)
3734                 return -ENOMEM;
3735
3736         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3737         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3738         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3739
3740         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3741         kfree(cmd);
3742
3743         return rc;
3744 }
3745
3746 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3747                                      struct ieee80211_vif *vif, u8 *addr)
3748 {
3749         struct mwl8k_cmd_set_new_stn *cmd;
3750         int rc;
3751
3752         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3753         if (cmd == NULL)
3754                 return -ENOMEM;
3755
3756         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3757         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3758         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3759         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3760
3761         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3762         kfree(cmd);
3763
3764         return rc;
3765 }
3766
3767 /*
3768  * CMD_UPDATE_ENCRYPTION.
3769  */
3770
3771 #define MAX_ENCR_KEY_LENGTH     16
3772 #define MIC_KEY_LENGTH          8
3773
3774 struct mwl8k_cmd_update_encryption {
3775         struct mwl8k_cmd_pkt header;
3776
3777         __le32 action;
3778         __le32 reserved;
3779         __u8 mac_addr[6];
3780         __u8 encr_type;
3781
3782 } __attribute__((packed));
3783
3784 struct mwl8k_cmd_set_key {
3785         struct mwl8k_cmd_pkt header;
3786
3787         __le32 action;
3788         __le32 reserved;
3789         __le16 length;
3790         __le16 key_type_id;
3791         __le32 key_info;
3792         __le32 key_id;
3793         __le16 key_len;
3794         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3795         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3796         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3797         __le16 tkip_rsc_low;
3798         __le32 tkip_rsc_high;
3799         __le16 tkip_tsc_low;
3800         __le32 tkip_tsc_high;
3801         __u8 mac_addr[6];
3802 } __attribute__((packed));
3803
3804 enum {
3805         MWL8K_ENCR_ENABLE,
3806         MWL8K_ENCR_SET_KEY,
3807         MWL8K_ENCR_REMOVE_KEY,
3808         MWL8K_ENCR_SET_GROUP_KEY,
3809 };
3810
3811 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3812 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3813 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3814 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3815 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3816
3817 enum {
3818         MWL8K_ALG_WEP,
3819         MWL8K_ALG_TKIP,
3820         MWL8K_ALG_CCMP,
3821 };
3822
3823 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3824 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3825 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3826 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3827 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3828
3829 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3830                                               struct ieee80211_vif *vif,
3831                                               u8 *addr,
3832                                               u8 encr_type)
3833 {
3834         struct mwl8k_cmd_update_encryption *cmd;
3835         int rc;
3836
3837         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3838         if (cmd == NULL)
3839                 return -ENOMEM;
3840
3841         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3842         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3843         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3844         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3845         cmd->encr_type = encr_type;
3846
3847         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3848         kfree(cmd);
3849
3850         return rc;
3851 }
3852
3853 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3854                                                 u8 *addr,
3855                                                 struct ieee80211_key_conf *key)
3856 {
3857         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3858         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3859         cmd->length = cpu_to_le16(sizeof(*cmd) -
3860                                 offsetof(struct mwl8k_cmd_set_key, length));
3861         cmd->key_id = cpu_to_le32(key->keyidx);
3862         cmd->key_len = cpu_to_le16(key->keylen);
3863         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3864
3865         switch (key->cipher) {
3866         case WLAN_CIPHER_SUITE_WEP40:
3867         case WLAN_CIPHER_SUITE_WEP104:
3868                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3869                 if (key->keyidx == 0)
3870                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3871
3872                 break;
3873         case WLAN_CIPHER_SUITE_TKIP:
3874                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3875                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3876                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3877                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3878                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3879                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3880                 break;
3881         case WLAN_CIPHER_SUITE_CCMP:
3882                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3883                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3884                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3885                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3886                 break;
3887         default:
3888                 return -ENOTSUPP;
3889         }
3890
3891         return 0;
3892 }
3893
3894 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3895                                                 struct ieee80211_vif *vif,
3896                                                 u8 *addr,
3897                                                 struct ieee80211_key_conf *key)
3898 {
3899         struct mwl8k_cmd_set_key *cmd;
3900         int rc;
3901         int keymlen;
3902         u32 action;
3903         u8 idx;
3904         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3905
3906         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3907         if (cmd == NULL)
3908                 return -ENOMEM;
3909
3910         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3911         if (rc < 0)
3912                 goto done;
3913
3914         idx = key->keyidx;
3915
3916         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3917                 action = MWL8K_ENCR_SET_KEY;
3918         else
3919                 action = MWL8K_ENCR_SET_GROUP_KEY;
3920
3921         switch (key->cipher) {
3922         case WLAN_CIPHER_SUITE_WEP40:
3923         case WLAN_CIPHER_SUITE_WEP104:
3924                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3925                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3926                                                 sizeof(*key) + key->keylen);
3927                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
3928                 }
3929
3930                 keymlen = 0;
3931                 action = MWL8K_ENCR_SET_KEY;
3932                 break;
3933         case WLAN_CIPHER_SUITE_TKIP:
3934                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3935                 break;
3936         case WLAN_CIPHER_SUITE_CCMP:
3937                 keymlen = key->keylen;
3938                 break;
3939         default:
3940                 rc = -ENOTSUPP;
3941                 goto done;
3942         }
3943
3944         memcpy(cmd->key_material, key->key, keymlen);
3945         cmd->action = cpu_to_le32(action);
3946
3947         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3948 done:
3949         kfree(cmd);
3950
3951         return rc;
3952 }
3953
3954 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3955                                                 struct ieee80211_vif *vif,
3956                                                 u8 *addr,
3957                                                 struct ieee80211_key_conf *key)
3958 {
3959         struct mwl8k_cmd_set_key *cmd;
3960         int rc;
3961         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3962
3963         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3964         if (cmd == NULL)
3965                 return -ENOMEM;
3966
3967         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3968         if (rc < 0)
3969                 goto done;
3970
3971         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3972                         WLAN_CIPHER_SUITE_WEP104)
3973                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3974
3975         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3976
3977         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3978 done:
3979         kfree(cmd);
3980
3981         return rc;
3982 }
3983
3984 static int mwl8k_set_key(struct ieee80211_hw *hw,
3985                          enum set_key_cmd cmd_param,
3986                          struct ieee80211_vif *vif,
3987                          struct ieee80211_sta *sta,
3988                          struct ieee80211_key_conf *key)
3989 {
3990         int rc = 0;
3991         u8 encr_type;
3992         u8 *addr;
3993         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3994
3995         if (vif->type == NL80211_IFTYPE_STATION)
3996                 return -EOPNOTSUPP;
3997
3998         if (sta == NULL)
3999                 addr = hw->wiphy->perm_addr;
4000         else
4001                 addr = sta->addr;
4002
4003         if (cmd_param == SET_KEY) {
4004                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4005                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4006                 if (rc)
4007                         goto out;
4008
4009                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4010                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4011                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4012                 else
4013                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4014
4015                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4016                                                                 encr_type);
4017                 if (rc)
4018                         goto out;
4019
4020                 mwl8k_vif->is_hw_crypto_enabled = true;
4021
4022         } else {
4023                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4024
4025                 if (rc)
4026                         goto out;
4027
4028                 mwl8k_vif->is_hw_crypto_enabled = false;
4029
4030         }
4031 out:
4032         return rc;
4033 }
4034
4035 /*
4036  * CMD_UPDATE_STADB.
4037  */
4038 struct ewc_ht_info {
4039         __le16  control1;
4040         __le16  control2;
4041         __le16  control3;
4042 } __packed;
4043
4044 struct peer_capability_info {
4045         /* Peer type - AP vs. STA.  */
4046         __u8    peer_type;
4047
4048         /* Basic 802.11 capabilities from assoc resp.  */
4049         __le16  basic_caps;
4050
4051         /* Set if peer supports 802.11n high throughput (HT).  */
4052         __u8    ht_support;
4053
4054         /* Valid if HT is supported.  */
4055         __le16  ht_caps;
4056         __u8    extended_ht_caps;
4057         struct ewc_ht_info      ewc_info;
4058
4059         /* Legacy rate table. Intersection of our rates and peer rates.  */
4060         __u8    legacy_rates[12];
4061
4062         /* HT rate table. Intersection of our rates and peer rates.  */
4063         __u8    ht_rates[16];
4064         __u8    pad[16];
4065
4066         /* If set, interoperability mode, no proprietary extensions.  */
4067         __u8    interop;
4068         __u8    pad2;
4069         __u8    station_id;
4070         __le16  amsdu_enabled;
4071 } __packed;
4072
4073 struct mwl8k_cmd_update_stadb {
4074         struct mwl8k_cmd_pkt header;
4075
4076         /* See STADB_ACTION_TYPE */
4077         __le32  action;
4078
4079         /* Peer MAC address */
4080         __u8    peer_addr[ETH_ALEN];
4081
4082         __le32  reserved;
4083
4084         /* Peer info - valid during add/update.  */
4085         struct peer_capability_info     peer_info;
4086 } __packed;
4087
4088 #define MWL8K_STA_DB_MODIFY_ENTRY       1
4089 #define MWL8K_STA_DB_DEL_ENTRY          2
4090
4091 /* Peer Entry flags - used to define the type of the peer node */
4092 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
4093
4094 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4095                                       struct ieee80211_vif *vif,
4096                                       struct ieee80211_sta *sta)
4097 {
4098         struct mwl8k_cmd_update_stadb *cmd;
4099         struct peer_capability_info *p;
4100         u32 rates;
4101         int rc;
4102
4103         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4104         if (cmd == NULL)
4105                 return -ENOMEM;
4106
4107         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4108         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4109         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4110         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4111
4112         p = &cmd->peer_info;
4113         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4114         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4115         p->ht_support = sta->ht_cap.ht_supported;
4116         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4117         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4118                 ((sta->ht_cap.ampdu_density & 7) << 2);
4119         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4120                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4121         else
4122                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4123         legacy_rate_mask_to_array(p->legacy_rates, rates);
4124         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4125         p->interop = 1;
4126         p->amsdu_enabled = 0;
4127
4128         rc = mwl8k_post_cmd(hw, &cmd->header);
4129         kfree(cmd);
4130
4131         return rc ? rc : p->station_id;
4132 }
4133
4134 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4135                                       struct ieee80211_vif *vif, u8 *addr)
4136 {
4137         struct mwl8k_cmd_update_stadb *cmd;
4138         int rc;
4139
4140         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4141         if (cmd == NULL)
4142                 return -ENOMEM;
4143
4144         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4145         cmd->header.length = cpu_to_le16(sizeof(*cmd));
4146         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4147         memcpy(cmd->peer_addr, addr, ETH_ALEN);
4148
4149         rc = mwl8k_post_cmd(hw, &cmd->header);
4150         kfree(cmd);
4151
4152         return rc;
4153 }
4154
4155
4156 /*
4157  * Interrupt handling.
4158  */
4159 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4160 {
4161         struct ieee80211_hw *hw = dev_id;
4162         struct mwl8k_priv *priv = hw->priv;
4163         u32 status;
4164
4165         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4166         if (!status)
4167                 return IRQ_NONE;
4168
4169         if (status & MWL8K_A2H_INT_TX_DONE) {
4170                 status &= ~MWL8K_A2H_INT_TX_DONE;
4171                 tasklet_schedule(&priv->poll_tx_task);
4172         }
4173
4174         if (status & MWL8K_A2H_INT_RX_READY) {
4175                 status &= ~MWL8K_A2H_INT_RX_READY;
4176                 tasklet_schedule(&priv->poll_rx_task);
4177         }
4178
4179         if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4180                 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4181                 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4182         }
4183
4184         if (status)
4185                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4186
4187         if (status & MWL8K_A2H_INT_OPC_DONE) {
4188                 if (priv->hostcmd_wait != NULL)
4189                         complete(priv->hostcmd_wait);
4190         }
4191
4192         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4193                 if (!mutex_is_locked(&priv->fw_mutex) &&
4194                     priv->radio_on && priv->pending_tx_pkts)
4195                         mwl8k_tx_start(priv);
4196         }
4197
4198         return IRQ_HANDLED;
4199 }
4200
4201 static void mwl8k_tx_poll(unsigned long data)
4202 {
4203         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4204         struct mwl8k_priv *priv = hw->priv;
4205         int limit;
4206         int i;
4207
4208         limit = 32;
4209
4210         spin_lock_bh(&priv->tx_lock);
4211
4212         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4213                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4214
4215         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4216                 complete(priv->tx_wait);
4217                 priv->tx_wait = NULL;
4218         }
4219
4220         spin_unlock_bh(&priv->tx_lock);
4221
4222         if (limit) {
4223                 writel(~MWL8K_A2H_INT_TX_DONE,
4224                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4225         } else {
4226                 tasklet_schedule(&priv->poll_tx_task);
4227         }
4228 }
4229
4230 static void mwl8k_rx_poll(unsigned long data)
4231 {
4232         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4233         struct mwl8k_priv *priv = hw->priv;
4234         int limit;
4235
4236         limit = 32;
4237         limit -= rxq_process(hw, 0, limit);
4238         limit -= rxq_refill(hw, 0, limit);
4239
4240         if (limit) {
4241                 writel(~MWL8K_A2H_INT_RX_READY,
4242                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4243         } else {
4244                 tasklet_schedule(&priv->poll_rx_task);
4245         }
4246 }
4247
4248
4249 /*
4250  * Core driver operations.
4251  */
4252 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4253 {
4254         struct mwl8k_priv *priv = hw->priv;
4255         int index = skb_get_queue_mapping(skb);
4256
4257         if (!priv->radio_on) {
4258                 wiphy_debug(hw->wiphy,
4259                             "dropped TX frame since radio disabled\n");
4260                 dev_kfree_skb(skb);
4261                 return;
4262         }
4263
4264         mwl8k_txq_xmit(hw, index, skb);
4265 }
4266
4267 static int mwl8k_start(struct ieee80211_hw *hw)
4268 {
4269         struct mwl8k_priv *priv = hw->priv;
4270         int rc;
4271
4272         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4273                          IRQF_SHARED, MWL8K_NAME, hw);
4274         if (rc) {
4275                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4276                 return -EIO;
4277         }
4278
4279         /* Enable TX reclaim and RX tasklets.  */
4280         tasklet_enable(&priv->poll_tx_task);
4281         tasklet_enable(&priv->poll_rx_task);
4282
4283         /* Enable interrupts */
4284         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4285
4286         rc = mwl8k_fw_lock(hw);
4287         if (!rc) {
4288                 rc = mwl8k_cmd_radio_enable(hw);
4289
4290                 if (!priv->ap_fw) {
4291                         if (!rc)
4292                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4293
4294                         if (!rc)
4295                                 rc = mwl8k_cmd_set_pre_scan(hw);
4296
4297                         if (!rc)
4298                                 rc = mwl8k_cmd_set_post_scan(hw,
4299                                                 "\x00\x00\x00\x00\x00\x00");
4300                 }
4301
4302                 if (!rc)
4303                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4304
4305                 if (!rc)
4306                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4307
4308                 mwl8k_fw_unlock(hw);
4309         }
4310
4311         if (rc) {
4312                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4313                 free_irq(priv->pdev->irq, hw);
4314                 tasklet_disable(&priv->poll_tx_task);
4315                 tasklet_disable(&priv->poll_rx_task);
4316         }
4317
4318         return rc;
4319 }
4320
4321 static void mwl8k_stop(struct ieee80211_hw *hw)
4322 {
4323         struct mwl8k_priv *priv = hw->priv;
4324         int i;
4325
4326         mwl8k_cmd_radio_disable(hw);
4327
4328         ieee80211_stop_queues(hw);
4329
4330         /* Disable interrupts */
4331         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4332         free_irq(priv->pdev->irq, hw);
4333
4334         /* Stop finalize join worker */
4335         cancel_work_sync(&priv->finalize_join_worker);
4336         cancel_work_sync(&priv->watchdog_ba_handle);
4337         if (priv->beacon_skb != NULL)
4338                 dev_kfree_skb(priv->beacon_skb);
4339
4340         /* Stop TX reclaim and RX tasklets.  */
4341         tasklet_disable(&priv->poll_tx_task);
4342         tasklet_disable(&priv->poll_rx_task);
4343
4344         /* Return all skbs to mac80211 */
4345         for (i = 0; i < mwl8k_tx_queues(priv); i++)
4346                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4347 }
4348
4349 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4350
4351 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4352                                struct ieee80211_vif *vif)
4353 {
4354         struct mwl8k_priv *priv = hw->priv;
4355         struct mwl8k_vif *mwl8k_vif;
4356         u32 macids_supported;
4357         int macid, rc;
4358         struct mwl8k_device_info *di;
4359
4360         /*
4361          * Reject interface creation if sniffer mode is active, as
4362          * STA operation is mutually exclusive with hardware sniffer
4363          * mode.  (Sniffer mode is only used on STA firmware.)
4364          */
4365         if (priv->sniffer_enabled) {
4366                 wiphy_info(hw->wiphy,
4367                            "unable to create STA interface because sniffer mode is enabled\n");
4368                 return -EINVAL;
4369         }
4370
4371         di = priv->device_info;
4372         switch (vif->type) {
4373         case NL80211_IFTYPE_AP:
4374                 if (!priv->ap_fw && di->fw_image_ap) {
4375                         /* we must load the ap fw to meet this request */
4376                         if (!list_empty(&priv->vif_list))
4377                                 return -EBUSY;
4378                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4379                         if (rc)
4380                                 return rc;
4381                 }
4382                 macids_supported = priv->ap_macids_supported;
4383                 break;
4384         case NL80211_IFTYPE_STATION:
4385                 if (priv->ap_fw && di->fw_image_sta) {
4386                         /* we must load the sta fw to meet this request */
4387                         if (!list_empty(&priv->vif_list))
4388                                 return -EBUSY;
4389                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4390                         if (rc)
4391                                 return rc;
4392                 }
4393                 macids_supported = priv->sta_macids_supported;
4394                 break;
4395         default:
4396                 return -EINVAL;
4397         }
4398
4399         macid = ffs(macids_supported & ~priv->macids_used);
4400         if (!macid--)
4401                 return -EBUSY;
4402
4403         /* Setup driver private area. */
4404         mwl8k_vif = MWL8K_VIF(vif);
4405         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4406         mwl8k_vif->vif = vif;
4407         mwl8k_vif->macid = macid;
4408         mwl8k_vif->seqno = 0;
4409         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4410         mwl8k_vif->is_hw_crypto_enabled = false;
4411
4412         /* Set the mac address.  */
4413         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4414
4415         if (priv->ap_fw)
4416                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4417
4418         priv->macids_used |= 1 << mwl8k_vif->macid;
4419         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4420
4421         return 0;
4422 }
4423
4424 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4425                                    struct ieee80211_vif *vif)
4426 {
4427         struct mwl8k_priv *priv = hw->priv;
4428         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4429
4430         if (priv->ap_fw)
4431                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4432
4433         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4434
4435         priv->macids_used &= ~(1 << mwl8k_vif->macid);
4436         list_del(&mwl8k_vif->list);
4437 }
4438
4439 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4440 {
4441         struct ieee80211_conf *conf = &hw->conf;
4442         struct mwl8k_priv *priv = hw->priv;
4443         int rc;
4444
4445         if (conf->flags & IEEE80211_CONF_IDLE) {
4446                 mwl8k_cmd_radio_disable(hw);
4447                 return 0;
4448         }
4449
4450         rc = mwl8k_fw_lock(hw);
4451         if (rc)
4452                 return rc;
4453
4454         rc = mwl8k_cmd_radio_enable(hw);
4455         if (rc)
4456                 goto out;
4457
4458         rc = mwl8k_cmd_set_rf_channel(hw, conf);
4459         if (rc)
4460                 goto out;
4461
4462         if (conf->power_level > 18)
4463                 conf->power_level = 18;
4464
4465         if (priv->ap_fw) {
4466
4467                 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4468                         rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4469                         if (rc)
4470                                 goto out;
4471                 }
4472
4473                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4474                 if (rc)
4475                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4476                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4477                 if (rc)
4478                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4479
4480         } else {
4481                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4482                 if (rc)
4483                         goto out;
4484                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4485         }
4486
4487 out:
4488         mwl8k_fw_unlock(hw);
4489
4490         return rc;
4491 }
4492
4493 static void
4494 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4495                            struct ieee80211_bss_conf *info, u32 changed)
4496 {
4497         struct mwl8k_priv *priv = hw->priv;
4498         u32 ap_legacy_rates;
4499         u8 ap_mcs_rates[16];
4500         int rc;
4501
4502         if (mwl8k_fw_lock(hw))
4503                 return;
4504
4505         /*
4506          * No need to capture a beacon if we're no longer associated.
4507          */
4508         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4509                 priv->capture_beacon = false;
4510
4511         /*
4512          * Get the AP's legacy and MCS rates.
4513          */
4514         if (vif->bss_conf.assoc) {
4515                 struct ieee80211_sta *ap;
4516
4517                 rcu_read_lock();
4518
4519                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4520                 if (ap == NULL) {
4521                         rcu_read_unlock();
4522                         goto out;
4523                 }
4524
4525                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4526                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4527                 } else {
4528                         ap_legacy_rates =
4529                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4530                 }
4531                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4532
4533                 rcu_read_unlock();
4534         }
4535
4536         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4537                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4538                 if (rc)
4539                         goto out;
4540
4541                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4542                 if (rc)
4543                         goto out;
4544         }
4545
4546         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4547                 rc = mwl8k_set_radio_preamble(hw,
4548                                 vif->bss_conf.use_short_preamble);
4549                 if (rc)
4550                         goto out;
4551         }
4552
4553         if (changed & BSS_CHANGED_ERP_SLOT) {
4554                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4555                 if (rc)
4556                         goto out;
4557         }
4558
4559         if (vif->bss_conf.assoc &&
4560             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4561                         BSS_CHANGED_HT))) {
4562                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4563                 if (rc)
4564                         goto out;
4565         }
4566
4567         if (vif->bss_conf.assoc &&
4568             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4569                 /*
4570                  * Finalize the join.  Tell rx handler to process
4571                  * next beacon from our BSSID.
4572                  */
4573                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4574                 priv->capture_beacon = true;
4575         }
4576
4577 out:
4578         mwl8k_fw_unlock(hw);
4579 }
4580
4581 static void
4582 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4583                           struct ieee80211_bss_conf *info, u32 changed)
4584 {
4585         int rc;
4586
4587         if (mwl8k_fw_lock(hw))
4588                 return;
4589
4590         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4591                 rc = mwl8k_set_radio_preamble(hw,
4592                                 vif->bss_conf.use_short_preamble);
4593                 if (rc)
4594                         goto out;
4595         }
4596
4597         if (changed & BSS_CHANGED_BASIC_RATES) {
4598                 int idx;
4599                 int rate;
4600
4601                 /*
4602                  * Use lowest supported basic rate for multicasts
4603                  * and management frames (such as probe responses --
4604                  * beacons will always go out at 1 Mb/s).
4605                  */
4606                 idx = ffs(vif->bss_conf.basic_rates);
4607                 if (idx)
4608                         idx--;
4609
4610                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4611                         rate = mwl8k_rates_24[idx].hw_value;
4612                 else
4613                         rate = mwl8k_rates_50[idx].hw_value;
4614
4615                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4616         }
4617
4618         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4619                 struct sk_buff *skb;
4620
4621                 skb = ieee80211_beacon_get(hw, vif);
4622                 if (skb != NULL) {
4623                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4624                         kfree_skb(skb);
4625                 }
4626         }
4627
4628         if (changed & BSS_CHANGED_BEACON_ENABLED)
4629                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4630
4631 out:
4632         mwl8k_fw_unlock(hw);
4633 }
4634
4635 static void
4636 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4637                        struct ieee80211_bss_conf *info, u32 changed)
4638 {
4639         struct mwl8k_priv *priv = hw->priv;
4640
4641         if (!priv->ap_fw)
4642                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4643         else
4644                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4645 }
4646
4647 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4648                                    struct netdev_hw_addr_list *mc_list)
4649 {
4650         struct mwl8k_cmd_pkt *cmd;
4651
4652         /*
4653          * Synthesize and return a command packet that programs the
4654          * hardware multicast address filter.  At this point we don't
4655          * know whether FIF_ALLMULTI is being requested, but if it is,
4656          * we'll end up throwing this packet away and creating a new
4657          * one in mwl8k_configure_filter().
4658          */
4659         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4660
4661         return (unsigned long)cmd;
4662 }
4663
4664 static int
4665 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4666                                unsigned int changed_flags,
4667                                unsigned int *total_flags)
4668 {
4669         struct mwl8k_priv *priv = hw->priv;
4670
4671         /*
4672          * Hardware sniffer mode is mutually exclusive with STA
4673          * operation, so refuse to enable sniffer mode if a STA
4674          * interface is active.
4675          */
4676         if (!list_empty(&priv->vif_list)) {
4677                 if (net_ratelimit())
4678                         wiphy_info(hw->wiphy,
4679                                    "not enabling sniffer mode because STA interface is active\n");
4680                 return 0;
4681         }
4682
4683         if (!priv->sniffer_enabled) {
4684                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4685                         return 0;
4686                 priv->sniffer_enabled = true;
4687         }
4688
4689         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4690                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4691                         FIF_OTHER_BSS;
4692
4693         return 1;
4694 }
4695
4696 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4697 {
4698         if (!list_empty(&priv->vif_list))
4699                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4700
4701         return NULL;
4702 }
4703
4704 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4705                                    unsigned int changed_flags,
4706                                    unsigned int *total_flags,
4707                                    u64 multicast)
4708 {
4709         struct mwl8k_priv *priv = hw->priv;
4710         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4711
4712         /*
4713          * AP firmware doesn't allow fine-grained control over
4714          * the receive filter.
4715          */
4716         if (priv->ap_fw) {
4717                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4718                 kfree(cmd);
4719                 return;
4720         }
4721
4722         /*
4723          * Enable hardware sniffer mode if FIF_CONTROL or
4724          * FIF_OTHER_BSS is requested.
4725          */
4726         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4727             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4728                 kfree(cmd);
4729                 return;
4730         }
4731
4732         /* Clear unsupported feature flags */
4733         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4734
4735         if (mwl8k_fw_lock(hw)) {
4736                 kfree(cmd);
4737                 return;
4738         }
4739
4740         if (priv->sniffer_enabled) {
4741                 mwl8k_cmd_enable_sniffer(hw, 0);
4742                 priv->sniffer_enabled = false;
4743         }
4744
4745         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4746                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4747                         /*
4748                          * Disable the BSS filter.
4749                          */
4750                         mwl8k_cmd_set_pre_scan(hw);
4751                 } else {
4752                         struct mwl8k_vif *mwl8k_vif;
4753                         const u8 *bssid;
4754
4755                         /*
4756                          * Enable the BSS filter.
4757                          *
4758                          * If there is an active STA interface, use that
4759                          * interface's BSSID, otherwise use a dummy one
4760                          * (where the OUI part needs to be nonzero for
4761                          * the BSSID to be accepted by POST_SCAN).
4762                          */
4763                         mwl8k_vif = mwl8k_first_vif(priv);
4764                         if (mwl8k_vif != NULL)
4765                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4766                         else
4767                                 bssid = "\x01\x00\x00\x00\x00\x00";
4768
4769                         mwl8k_cmd_set_post_scan(hw, bssid);
4770                 }
4771         }
4772
4773         /*
4774          * If FIF_ALLMULTI is being requested, throw away the command
4775          * packet that ->prepare_multicast() built and replace it with
4776          * a command packet that enables reception of all multicast
4777          * packets.
4778          */
4779         if (*total_flags & FIF_ALLMULTI) {
4780                 kfree(cmd);
4781                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4782         }
4783
4784         if (cmd != NULL) {
4785                 mwl8k_post_cmd(hw, cmd);
4786                 kfree(cmd);
4787         }
4788
4789         mwl8k_fw_unlock(hw);
4790 }
4791
4792 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4793 {
4794         return mwl8k_cmd_set_rts_threshold(hw, value);
4795 }
4796
4797 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4798                             struct ieee80211_vif *vif,
4799                             struct ieee80211_sta *sta)
4800 {
4801         struct mwl8k_priv *priv = hw->priv;
4802
4803         if (priv->ap_fw)
4804                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4805         else
4806                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4807 }
4808
4809 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4810                          struct ieee80211_vif *vif,
4811                          struct ieee80211_sta *sta)
4812 {
4813         struct mwl8k_priv *priv = hw->priv;
4814         int ret;
4815         int i;
4816         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4817         struct ieee80211_key_conf *key;
4818
4819         if (!priv->ap_fw) {
4820                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4821                 if (ret >= 0) {
4822                         MWL8K_STA(sta)->peer_id = ret;
4823                         if (sta->ht_cap.ht_supported)
4824                                 MWL8K_STA(sta)->is_ampdu_allowed = true;
4825                         ret = 0;
4826                 }
4827
4828         } else {
4829                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4830         }
4831
4832         for (i = 0; i < NUM_WEP_KEYS; i++) {
4833                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4834                 if (mwl8k_vif->wep_key_conf[i].enabled)
4835                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4836         }
4837         return ret;
4838 }
4839
4840 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4841                          const struct ieee80211_tx_queue_params *params)
4842 {
4843         struct mwl8k_priv *priv = hw->priv;
4844         int rc;
4845
4846         rc = mwl8k_fw_lock(hw);
4847         if (!rc) {
4848                 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4849                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4850
4851                 if (!priv->wmm_enabled)
4852                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4853
4854                 if (!rc) {
4855                         int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4856                         rc = mwl8k_cmd_set_edca_params(hw, q,
4857                                                        params->cw_min,
4858                                                        params->cw_max,
4859                                                        params->aifs,
4860                                                        params->txop);
4861                 }
4862
4863                 mwl8k_fw_unlock(hw);
4864         }
4865
4866         return rc;
4867 }
4868
4869 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4870                            struct ieee80211_low_level_stats *stats)
4871 {
4872         return mwl8k_cmd_get_stat(hw, stats);
4873 }
4874
4875 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4876                                 struct survey_info *survey)
4877 {
4878         struct mwl8k_priv *priv = hw->priv;
4879         struct ieee80211_conf *conf = &hw->conf;
4880
4881         if (idx != 0)
4882                 return -ENOENT;
4883
4884         survey->channel = conf->channel;
4885         survey->filled = SURVEY_INFO_NOISE_DBM;
4886         survey->noise = priv->noise;
4887
4888         return 0;
4889 }
4890
4891 #define MAX_AMPDU_ATTEMPTS 5
4892
4893 static int
4894 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4895                    enum ieee80211_ampdu_mlme_action action,
4896                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4897                    u8 buf_size)
4898 {
4899
4900         int i, rc = 0;
4901         struct mwl8k_priv *priv = hw->priv;
4902         struct mwl8k_ampdu_stream *stream;
4903         u8 *addr = sta->addr;
4904
4905         if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4906                 return -ENOTSUPP;
4907
4908         spin_lock(&priv->stream_lock);
4909         stream = mwl8k_lookup_stream(hw, addr, tid);
4910
4911         switch (action) {
4912         case IEEE80211_AMPDU_RX_START:
4913         case IEEE80211_AMPDU_RX_STOP:
4914                 break;
4915         case IEEE80211_AMPDU_TX_START:
4916                 /* By the time we get here the hw queues may contain outgoing
4917                  * packets for this RA/TID that are not part of this BA
4918                  * session.  The hw will assign sequence numbers to these
4919                  * packets as they go out.  So if we query the hw for its next
4920                  * sequence number and use that for the SSN here, it may end up
4921                  * being wrong, which will lead to sequence number mismatch at
4922                  * the recipient.  To avoid this, we reset the sequence number
4923                  * to O for the first MPDU in this BA stream.
4924                  */
4925                 *ssn = 0;
4926                 if (stream == NULL) {
4927                         /* This means that somebody outside this driver called
4928                          * ieee80211_start_tx_ba_session.  This is unexpected
4929                          * because we do our own rate control.  Just warn and
4930                          * move on.
4931                          */
4932                         wiphy_warn(hw->wiphy, "Unexpected call to %s.  "
4933                                    "Proceeding anyway.\n", __func__);
4934                         stream = mwl8k_add_stream(hw, sta, tid);
4935                 }
4936                 if (stream == NULL) {
4937                         wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
4938                         rc = -EBUSY;
4939                         break;
4940                 }
4941                 stream->state = AMPDU_STREAM_IN_PROGRESS;
4942
4943                 /* Release the lock before we do the time consuming stuff */
4944                 spin_unlock(&priv->stream_lock);
4945                 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
4946                         rc = mwl8k_check_ba(hw, stream);
4947
4948                         if (!rc)
4949                                 break;
4950                         /*
4951                          * HW queues take time to be flushed, give them
4952                          * sufficient time
4953                          */
4954
4955                         msleep(1000);
4956                 }
4957                 spin_lock(&priv->stream_lock);
4958                 if (rc) {
4959                         wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
4960                                 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
4961                         mwl8k_remove_stream(hw, stream);
4962                         rc = -EBUSY;
4963                         break;
4964                 }
4965                 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
4966                 break;
4967         case IEEE80211_AMPDU_TX_STOP:
4968                 if (stream == NULL)
4969                         break;
4970                 if (stream->state == AMPDU_STREAM_ACTIVE) {
4971                         spin_unlock(&priv->stream_lock);
4972                         mwl8k_destroy_ba(hw, stream);
4973                         spin_lock(&priv->stream_lock);
4974                 }
4975                 mwl8k_remove_stream(hw, stream);
4976                 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
4977                 break;
4978         case IEEE80211_AMPDU_TX_OPERATIONAL:
4979                 BUG_ON(stream == NULL);
4980                 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
4981                 spin_unlock(&priv->stream_lock);
4982                 rc = mwl8k_create_ba(hw, stream, buf_size);
4983                 spin_lock(&priv->stream_lock);
4984                 if (!rc)
4985                         stream->state = AMPDU_STREAM_ACTIVE;
4986                 else {
4987                         spin_unlock(&priv->stream_lock);
4988                         mwl8k_destroy_ba(hw, stream);
4989                         spin_lock(&priv->stream_lock);
4990                         wiphy_debug(hw->wiphy,
4991                                 "Failed adding stream for sta %pM tid %d\n",
4992                                 addr, tid);
4993                         mwl8k_remove_stream(hw, stream);
4994                 }
4995                 break;
4996
4997         default:
4998                 rc = -ENOTSUPP;
4999         }
5000
5001         spin_unlock(&priv->stream_lock);
5002         return rc;
5003 }
5004
5005 static const struct ieee80211_ops mwl8k_ops = {
5006         .tx                     = mwl8k_tx,
5007         .start                  = mwl8k_start,
5008         .stop                   = mwl8k_stop,
5009         .add_interface          = mwl8k_add_interface,
5010         .remove_interface       = mwl8k_remove_interface,
5011         .config                 = mwl8k_config,
5012         .bss_info_changed       = mwl8k_bss_info_changed,
5013         .prepare_multicast      = mwl8k_prepare_multicast,
5014         .configure_filter       = mwl8k_configure_filter,
5015         .set_key                = mwl8k_set_key,
5016         .set_rts_threshold      = mwl8k_set_rts_threshold,
5017         .sta_add                = mwl8k_sta_add,
5018         .sta_remove             = mwl8k_sta_remove,
5019         .conf_tx                = mwl8k_conf_tx,
5020         .get_stats              = mwl8k_get_stats,
5021         .get_survey             = mwl8k_get_survey,
5022         .ampdu_action           = mwl8k_ampdu_action,
5023 };
5024
5025 static void mwl8k_finalize_join_worker(struct work_struct *work)
5026 {
5027         struct mwl8k_priv *priv =
5028                 container_of(work, struct mwl8k_priv, finalize_join_worker);
5029         struct sk_buff *skb = priv->beacon_skb;
5030         struct ieee80211_mgmt *mgmt = (void *)skb->data;
5031         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5032         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5033                                          mgmt->u.beacon.variable, len);
5034         int dtim_period = 1;
5035
5036         if (tim && tim[1] >= 2)
5037                 dtim_period = tim[3];
5038
5039         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5040
5041         dev_kfree_skb(skb);
5042         priv->beacon_skb = NULL;
5043 }
5044
5045 enum {
5046         MWL8363 = 0,
5047         MWL8687,
5048         MWL8366,
5049 };
5050
5051 #define MWL8K_8366_AP_FW_API 2
5052 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5053 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5054
5055 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5056         [MWL8363] = {
5057                 .part_name      = "88w8363",
5058                 .helper_image   = "mwl8k/helper_8363.fw",
5059                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
5060         },
5061         [MWL8687] = {
5062                 .part_name      = "88w8687",
5063                 .helper_image   = "mwl8k/helper_8687.fw",
5064                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
5065         },
5066         [MWL8366] = {
5067                 .part_name      = "88w8366",
5068                 .helper_image   = "mwl8k/helper_8366.fw",
5069                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
5070                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5071                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
5072                 .ap_rxd_ops     = &rxd_8366_ap_ops,
5073         },
5074 };
5075
5076 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5077 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5078 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5079 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5080 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5081 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5082 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5083
5084 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5085         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5086         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5087         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5088         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5089         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5090         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5091         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5092         { },
5093 };
5094 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5095
5096 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5097 {
5098         int rc;
5099         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5100                "Trying alternative firmware %s\n", pci_name(priv->pdev),
5101                priv->fw_pref, priv->fw_alt);
5102         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5103         if (rc) {
5104                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5105                        pci_name(priv->pdev), priv->fw_alt);
5106                 return rc;
5107         }
5108         return 0;
5109 }
5110
5111 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5112 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5113 {
5114         struct mwl8k_priv *priv = context;
5115         struct mwl8k_device_info *di = priv->device_info;
5116         int rc;
5117
5118         switch (priv->fw_state) {
5119         case FW_STATE_INIT:
5120                 if (!fw) {
5121                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5122                                pci_name(priv->pdev), di->helper_image);
5123                         goto fail;
5124                 }
5125                 priv->fw_helper = fw;
5126                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5127                                       true);
5128                 if (rc && priv->fw_alt) {
5129                         rc = mwl8k_request_alt_fw(priv);
5130                         if (rc)
5131                                 goto fail;
5132                         priv->fw_state = FW_STATE_LOADING_ALT;
5133                 } else if (rc)
5134                         goto fail;
5135                 else
5136                         priv->fw_state = FW_STATE_LOADING_PREF;
5137                 break;
5138
5139         case FW_STATE_LOADING_PREF:
5140                 if (!fw) {
5141                         if (priv->fw_alt) {
5142                                 rc = mwl8k_request_alt_fw(priv);
5143                                 if (rc)
5144                                         goto fail;
5145                                 priv->fw_state = FW_STATE_LOADING_ALT;
5146                         } else
5147                                 goto fail;
5148                 } else {
5149                         priv->fw_ucode = fw;
5150                         rc = mwl8k_firmware_load_success(priv);
5151                         if (rc)
5152                                 goto fail;
5153                         else
5154                                 complete(&priv->firmware_loading_complete);
5155                 }
5156                 break;
5157
5158         case FW_STATE_LOADING_ALT:
5159                 if (!fw) {
5160                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5161                                pci_name(priv->pdev), di->helper_image);
5162                         goto fail;
5163                 }
5164                 priv->fw_ucode = fw;
5165                 rc = mwl8k_firmware_load_success(priv);
5166                 if (rc)
5167                         goto fail;
5168                 else
5169                         complete(&priv->firmware_loading_complete);
5170                 break;
5171
5172         default:
5173                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5174                        MWL8K_NAME, priv->fw_state);
5175                 BUG_ON(1);
5176         }
5177
5178         return;
5179
5180 fail:
5181         priv->fw_state = FW_STATE_ERROR;
5182         complete(&priv->firmware_loading_complete);
5183         device_release_driver(&priv->pdev->dev);
5184         mwl8k_release_firmware(priv);
5185 }
5186
5187 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5188                                bool nowait)
5189 {
5190         struct mwl8k_priv *priv = hw->priv;
5191         int rc;
5192
5193         /* Reset firmware and hardware */
5194         mwl8k_hw_reset(priv);
5195
5196         /* Ask userland hotplug daemon for the device firmware */
5197         rc = mwl8k_request_firmware(priv, fw_image, nowait);
5198         if (rc) {
5199                 wiphy_err(hw->wiphy, "Firmware files not found\n");
5200                 return rc;
5201         }
5202
5203         if (nowait)
5204                 return rc;
5205
5206         /* Load firmware into hardware */
5207         rc = mwl8k_load_firmware(hw);
5208         if (rc)
5209                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5210
5211         /* Reclaim memory once firmware is successfully loaded */
5212         mwl8k_release_firmware(priv);
5213
5214         return rc;
5215 }
5216
5217 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5218 {
5219         struct mwl8k_priv *priv = hw->priv;
5220         int rc = 0;
5221         int i;
5222
5223         for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5224                 rc = mwl8k_txq_init(hw, i);
5225                 if (rc)
5226                         break;
5227                 if (priv->ap_fw)
5228                         iowrite32(priv->txq[i].txd_dma,
5229                                   priv->sram + priv->txq_offset[i]);
5230         }
5231         return rc;
5232 }
5233
5234 /* initialize hw after successfully loading a firmware image */
5235 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5236 {
5237         struct mwl8k_priv *priv = hw->priv;
5238         int rc = 0;
5239         int i;
5240
5241         if (priv->ap_fw) {
5242                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5243                 if (priv->rxd_ops == NULL) {
5244                         wiphy_err(hw->wiphy,
5245                                   "Driver does not have AP firmware image support for this hardware\n");
5246                         goto err_stop_firmware;
5247                 }
5248         } else {
5249                 priv->rxd_ops = &rxd_sta_ops;
5250         }
5251
5252         priv->sniffer_enabled = false;
5253         priv->wmm_enabled = false;
5254         priv->pending_tx_pkts = 0;
5255
5256         rc = mwl8k_rxq_init(hw, 0);
5257         if (rc)
5258                 goto err_stop_firmware;
5259         rxq_refill(hw, 0, INT_MAX);
5260
5261         /* For the sta firmware, we need to know the dma addresses of tx queues
5262          * before sending MWL8K_CMD_GET_HW_SPEC.  So we must initialize them
5263          * prior to issuing this command.  But for the AP case, we learn the
5264          * total number of queues from the result CMD_GET_HW_SPEC, so for this
5265          * case we must initialize the tx queues after.
5266          */
5267         priv->num_ampdu_queues = 0;
5268         if (!priv->ap_fw) {
5269                 rc = mwl8k_init_txqs(hw);
5270                 if (rc)
5271                         goto err_free_queues;
5272         }
5273
5274         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5275         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5276         iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5277                   MWL8K_A2H_INT_BA_WATCHDOG,
5278                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5279         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5280
5281         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5282                          IRQF_SHARED, MWL8K_NAME, hw);
5283         if (rc) {
5284                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5285                 goto err_free_queues;
5286         }
5287
5288         memset(priv->ampdu, 0, sizeof(priv->ampdu));
5289
5290         /*
5291          * Temporarily enable interrupts.  Initial firmware host
5292          * commands use interrupts and avoid polling.  Disable
5293          * interrupts when done.
5294          */
5295         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5296
5297         /* Get config data, mac addrs etc */
5298         if (priv->ap_fw) {
5299                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5300                 if (!rc)
5301                         rc = mwl8k_init_txqs(hw);
5302                 if (!rc)
5303                         rc = mwl8k_cmd_set_hw_spec(hw);
5304         } else {
5305                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5306         }
5307         if (rc) {
5308                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5309                 goto err_free_irq;
5310         }
5311
5312         /* Turn radio off */
5313         rc = mwl8k_cmd_radio_disable(hw);
5314         if (rc) {
5315                 wiphy_err(hw->wiphy, "Cannot disable\n");
5316                 goto err_free_irq;
5317         }
5318
5319         /* Clear MAC address */
5320         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5321         if (rc) {
5322                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5323                 goto err_free_irq;
5324         }
5325
5326         /* Disable interrupts */
5327         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5328         free_irq(priv->pdev->irq, hw);
5329
5330         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5331                    priv->device_info->part_name,
5332                    priv->hw_rev, hw->wiphy->perm_addr,
5333                    priv->ap_fw ? "AP" : "STA",
5334                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5335                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5336
5337         return 0;
5338
5339 err_free_irq:
5340         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5341         free_irq(priv->pdev->irq, hw);
5342
5343 err_free_queues:
5344         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5345                 mwl8k_txq_deinit(hw, i);
5346         mwl8k_rxq_deinit(hw, 0);
5347
5348 err_stop_firmware:
5349         mwl8k_hw_reset(priv);
5350
5351         return rc;
5352 }
5353
5354 /*
5355  * invoke mwl8k_reload_firmware to change the firmware image after the device
5356  * has already been registered
5357  */
5358 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5359 {
5360         int i, rc = 0;
5361         struct mwl8k_priv *priv = hw->priv;
5362
5363         mwl8k_stop(hw);
5364         mwl8k_rxq_deinit(hw, 0);
5365
5366         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5367                 mwl8k_txq_deinit(hw, i);
5368
5369         rc = mwl8k_init_firmware(hw, fw_image, false);
5370         if (rc)
5371                 goto fail;
5372
5373         rc = mwl8k_probe_hw(hw);
5374         if (rc)
5375                 goto fail;
5376
5377         rc = mwl8k_start(hw);
5378         if (rc)
5379                 goto fail;
5380
5381         rc = mwl8k_config(hw, ~0);
5382         if (rc)
5383                 goto fail;
5384
5385         for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5386                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5387                 if (rc)
5388                         goto fail;
5389         }
5390
5391         return rc;
5392
5393 fail:
5394         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5395         return rc;
5396 }
5397
5398 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5399 {
5400         struct ieee80211_hw *hw = priv->hw;
5401         int i, rc;
5402
5403         rc = mwl8k_load_firmware(hw);
5404         mwl8k_release_firmware(priv);
5405         if (rc) {
5406                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5407                 return rc;
5408         }
5409
5410         /*
5411          * Extra headroom is the size of the required DMA header
5412          * minus the size of the smallest 802.11 frame (CTS frame).
5413          */
5414         hw->extra_tx_headroom =
5415                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5416
5417         hw->channel_change_time = 10;
5418
5419         hw->queues = MWL8K_TX_WMM_QUEUES;
5420
5421         /* Set rssi values to dBm */
5422         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5423         hw->vif_data_size = sizeof(struct mwl8k_vif);
5424         hw->sta_data_size = sizeof(struct mwl8k_sta);
5425
5426         priv->macids_used = 0;
5427         INIT_LIST_HEAD(&priv->vif_list);
5428
5429         /* Set default radio state and preamble */
5430         priv->radio_on = 0;
5431         priv->radio_short_preamble = 0;
5432
5433         /* Finalize join worker */
5434         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5435         /* Handle watchdog ba events */
5436         INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5437
5438         /* TX reclaim and RX tasklets.  */
5439         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5440         tasklet_disable(&priv->poll_tx_task);
5441         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5442         tasklet_disable(&priv->poll_rx_task);
5443
5444         /* Power management cookie */
5445         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5446         if (priv->cookie == NULL)
5447                 return -ENOMEM;
5448
5449         mutex_init(&priv->fw_mutex);
5450         priv->fw_mutex_owner = NULL;
5451         priv->fw_mutex_depth = 0;
5452         priv->hostcmd_wait = NULL;
5453
5454         spin_lock_init(&priv->tx_lock);
5455
5456         spin_lock_init(&priv->stream_lock);
5457
5458         priv->tx_wait = NULL;
5459
5460         rc = mwl8k_probe_hw(hw);
5461         if (rc)
5462                 goto err_free_cookie;
5463
5464         hw->wiphy->interface_modes = 0;
5465         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5466                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5467         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5468                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5469
5470         rc = ieee80211_register_hw(hw);
5471         if (rc) {
5472                 wiphy_err(hw->wiphy, "Cannot register device\n");
5473                 goto err_unprobe_hw;
5474         }
5475
5476         return 0;
5477
5478 err_unprobe_hw:
5479         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5480                 mwl8k_txq_deinit(hw, i);
5481         mwl8k_rxq_deinit(hw, 0);
5482
5483 err_free_cookie:
5484         if (priv->cookie != NULL)
5485                 pci_free_consistent(priv->pdev, 4,
5486                                 priv->cookie, priv->cookie_dma);
5487
5488         return rc;
5489 }
5490 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5491                                  const struct pci_device_id *id)
5492 {
5493         static int printed_version;
5494         struct ieee80211_hw *hw;
5495         struct mwl8k_priv *priv;
5496         struct mwl8k_device_info *di;
5497         int rc;
5498
5499         if (!printed_version) {
5500                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5501                 printed_version = 1;
5502         }
5503
5504
5505         rc = pci_enable_device(pdev);
5506         if (rc) {
5507                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5508                        MWL8K_NAME);
5509                 return rc;
5510         }
5511
5512         rc = pci_request_regions(pdev, MWL8K_NAME);
5513         if (rc) {
5514                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5515                        MWL8K_NAME);
5516                 goto err_disable_device;
5517         }
5518
5519         pci_set_master(pdev);
5520
5521
5522         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5523         if (hw == NULL) {
5524                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5525                 rc = -ENOMEM;
5526                 goto err_free_reg;
5527         }
5528
5529         SET_IEEE80211_DEV(hw, &pdev->dev);
5530         pci_set_drvdata(pdev, hw);
5531
5532         priv = hw->priv;
5533         priv->hw = hw;
5534         priv->pdev = pdev;
5535         priv->device_info = &mwl8k_info_tbl[id->driver_data];
5536
5537
5538         priv->sram = pci_iomap(pdev, 0, 0x10000);
5539         if (priv->sram == NULL) {
5540                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5541                 goto err_iounmap;
5542         }
5543
5544         /*
5545          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5546          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5547          */
5548         priv->regs = pci_iomap(pdev, 1, 0x10000);
5549         if (priv->regs == NULL) {
5550                 priv->regs = pci_iomap(pdev, 2, 0x10000);
5551                 if (priv->regs == NULL) {
5552                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
5553                         goto err_iounmap;
5554                 }
5555         }
5556
5557         /*
5558          * Choose the initial fw image depending on user input.  If a second
5559          * image is available, make it the alternative image that will be
5560          * loaded if the first one fails.
5561          */
5562         init_completion(&priv->firmware_loading_complete);
5563         di = priv->device_info;
5564         if (ap_mode_default && di->fw_image_ap) {
5565                 priv->fw_pref = di->fw_image_ap;
5566                 priv->fw_alt = di->fw_image_sta;
5567         } else if (!ap_mode_default && di->fw_image_sta) {
5568                 priv->fw_pref = di->fw_image_sta;
5569                 priv->fw_alt = di->fw_image_ap;
5570         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5571                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
5572                 priv->fw_pref = di->fw_image_sta;
5573         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5574                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
5575                 priv->fw_pref = di->fw_image_ap;
5576         }
5577         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5578         if (rc)
5579                 goto err_stop_firmware;
5580         return rc;
5581
5582 err_stop_firmware:
5583         mwl8k_hw_reset(priv);
5584
5585 err_iounmap:
5586         if (priv->regs != NULL)
5587                 pci_iounmap(pdev, priv->regs);
5588
5589         if (priv->sram != NULL)
5590                 pci_iounmap(pdev, priv->sram);
5591
5592         pci_set_drvdata(pdev, NULL);
5593         ieee80211_free_hw(hw);
5594
5595 err_free_reg:
5596         pci_release_regions(pdev);
5597
5598 err_disable_device:
5599         pci_disable_device(pdev);
5600
5601         return rc;
5602 }
5603
5604 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5605 {
5606         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5607 }
5608
5609 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5610 {
5611         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5612         struct mwl8k_priv *priv;
5613         int i;
5614
5615         if (hw == NULL)
5616                 return;
5617         priv = hw->priv;
5618
5619         wait_for_completion(&priv->firmware_loading_complete);
5620
5621         if (priv->fw_state == FW_STATE_ERROR) {
5622                 mwl8k_hw_reset(priv);
5623                 goto unmap;
5624         }
5625
5626         ieee80211_stop_queues(hw);
5627
5628         ieee80211_unregister_hw(hw);
5629
5630         /* Remove TX reclaim and RX tasklets.  */
5631         tasklet_kill(&priv->poll_tx_task);
5632         tasklet_kill(&priv->poll_rx_task);
5633
5634         /* Stop hardware */
5635         mwl8k_hw_reset(priv);
5636
5637         /* Return all skbs to mac80211 */
5638         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5639                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5640
5641         for (i = 0; i < mwl8k_tx_queues(priv); i++)
5642                 mwl8k_txq_deinit(hw, i);
5643
5644         mwl8k_rxq_deinit(hw, 0);
5645
5646         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5647
5648 unmap:
5649         pci_iounmap(pdev, priv->regs);
5650         pci_iounmap(pdev, priv->sram);
5651         pci_set_drvdata(pdev, NULL);
5652         ieee80211_free_hw(hw);
5653         pci_release_regions(pdev);
5654         pci_disable_device(pdev);
5655 }
5656
5657 static struct pci_driver mwl8k_driver = {
5658         .name           = MWL8K_NAME,
5659         .id_table       = mwl8k_pci_id_table,
5660         .probe          = mwl8k_probe,
5661         .remove         = __devexit_p(mwl8k_remove),
5662         .shutdown       = __devexit_p(mwl8k_shutdown),
5663 };
5664
5665 static int __init mwl8k_init(void)
5666 {
5667         return pci_register_driver(&mwl8k_driver);
5668 }
5669
5670 static void __exit mwl8k_exit(void)
5671 {
5672         pci_unregister_driver(&mwl8k_driver);
5673 }
5674
5675 module_init(mwl8k_init);
5676 module_exit(mwl8k_exit);
5677
5678 MODULE_DESCRIPTION(MWL8K_DESC);
5679 MODULE_VERSION(MWL8K_VERSION);
5680 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5681 MODULE_LICENSE("GPL");