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_CHNL_SWITCHED             (1 << 11)
  67 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  68 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  69 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  70 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  71 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  72 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  73 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  74 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  75
  76 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  77                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  78                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  79                                  MWL8K_A2H_INT_RADAR_DETECT | \
  80                                  MWL8K_A2H_INT_RADIO_ON | \
  81                                  MWL8K_A2H_INT_RADIO_OFF | \
  82                                  MWL8K_A2H_INT_MAC_EVENT | \
  83                                  MWL8K_A2H_INT_OPC_DONE | \
  84                                  MWL8K_A2H_INT_RX_READY | \
  85                                  MWL8K_A2H_INT_TX_DONE)
  86
  87 #define MWL8K_RX_QUEUES         1
  88 #define MWL8K_TX_QUEUES         4
  89
  90 struct rxd_ops {
  91         int rxd_size;
  92         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
  93         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
  94         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
  95                            __le16 *qos, s8 *noise);
  96 };
  97
  98 struct mwl8k_device_info {
  99         char *part_name;
 100         char *helper_image;
 101         char *fw_image_sta;
 102         char *fw_image_ap;
 103         struct rxd_ops *ap_rxd_ops;
 104         u32 fw_api_ap;
 105 };
 106
 107 struct mwl8k_rx_queue {
 108         int rxd_count;
 109
 110         /* hw receives here */
 111         int head;
 112
 113         /* refill descs here */
 114         int tail;
 115
 116         void *rxd;
 117         dma_addr_t rxd_dma;
 118         struct {
 119                 struct sk_buff *skb;
 120                 DEFINE_DMA_UNMAP_ADDR(dma);
 121         } *buf;
 122 };
 123
 124 struct mwl8k_tx_queue {
 125         /* hw transmits here */
 126         int head;
 127
 128         /* sw appends here */
 129         int tail;
 130
 131         unsigned int len;
 132         struct mwl8k_tx_desc *txd;
 133         dma_addr_t txd_dma;
 134         struct sk_buff **skb;
 135 };
 136
 137 struct mwl8k_priv {
 138         struct ieee80211_hw *hw;
 139         struct pci_dev *pdev;
 140
 141         struct mwl8k_device_info *device_info;
 142
 143         void __iomem *sram;
 144         void __iomem *regs;
 145
 146         /* firmware */
 147         const struct firmware *fw_helper;
 148         const struct firmware *fw_ucode;
 149
 150         /* hardware/firmware parameters */
 151         bool ap_fw;
 152         struct rxd_ops *rxd_ops;
 153         struct ieee80211_supported_band band_24;
 154         struct ieee80211_channel channels_24[14];
 155         struct ieee80211_rate rates_24[14];
 156         struct ieee80211_supported_band band_50;
 157         struct ieee80211_channel channels_50[4];
 158         struct ieee80211_rate rates_50[9];
 159         u32 ap_macids_supported;
 160         u32 sta_macids_supported;
 161
 162         /* firmware access */
 163         struct mutex fw_mutex;
 164         struct task_struct *fw_mutex_owner;
 165         int fw_mutex_depth;
 166         struct completion *hostcmd_wait;
 167
 168         /* lock held over TX and TX reap */
 169         spinlock_t tx_lock;
 170
 171         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 172         struct completion *tx_wait;
 173
 174         /* List of interfaces.  */
 175         u32 macids_used;
 176         struct list_head vif_list;
 177
 178         /* power management status cookie from firmware */
 179         u32 *cookie;
 180         dma_addr_t cookie_dma;
 181
 182         u16 num_mcaddrs;
 183         u8 hw_rev;
 184         u32 fw_rev;
 185
 186         /*
 187          * Running count of TX packets in flight, to avoid
 188          * iterating over the transmit rings each time.
 189          */
 190         int pending_tx_pkts;
 191
 192         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 193         struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
 194
 195         bool radio_on;
 196         bool radio_short_preamble;
 197         bool sniffer_enabled;
 198         bool wmm_enabled;
 199
 200         /* XXX need to convert this to handle multiple interfaces */
 201         bool capture_beacon;
 202         u8 capture_bssid[ETH_ALEN];
 203         struct sk_buff *beacon_skb;
 204
 205         /*
 206          * This FJ worker has to be global as it is scheduled from the
 207          * RX handler.  At this point we don't know which interface it
 208          * belongs to until the list of bssids waiting to complete join
 209          * is checked.
 210          */
 211         struct work_struct finalize_join_worker;
 212
 213         /* Tasklet to perform TX reclaim.  */
 214         struct tasklet_struct poll_tx_task;
 215
 216         /* Tasklet to perform RX.  */
 217         struct tasklet_struct poll_rx_task;
 218
 219         /* Most recently reported noise in dBm */
 220         s8 noise;
 221
 222         /*
 223          * preserve the queue configurations so they can be restored if/when
 224          * the firmware image is swapped.
 225          */
 226         struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_QUEUES];
 227
 228         /* async firmware loading state */
 229         unsigned fw_state;
 230         char *fw_pref;
 231         char *fw_alt;
 232         struct completion firmware_loading_complete;
 233 };
 234
 235 #define MAX_WEP_KEY_LEN         13
 236 #define NUM_WEP_KEYS            4
 237
 238 /* Per interface specific private data */
 239 struct mwl8k_vif {
 240         struct list_head list;
 241         struct ieee80211_vif *vif;
 242
 243         /* Firmware macid for this vif.  */
 244         int macid;
 245
 246         /* Non AMPDU sequence number assigned by driver.  */
 247         u16 seqno;
 248
 249         /* Saved WEP keys */
 250         struct {
 251                 u8 enabled;
 252                 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
 253         } wep_key_conf[NUM_WEP_KEYS];
 254
 255         /* BSSID */
 256         u8 bssid[ETH_ALEN];
 257
 258         /* A flag to indicate is HW crypto is enabled for this bssid */
 259         bool is_hw_crypto_enabled;
 260 };
 261 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 262 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
 263
 264 struct mwl8k_sta {
 265         /* Index into station database. Returned by UPDATE_STADB.  */
 266         u8 peer_id;
 267 };
 268 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 269
 270 static const struct ieee80211_channel mwl8k_channels_24[] = {
 271         { .center_freq = 2412, .hw_value = 1, },
 272         { .center_freq = 2417, .hw_value = 2, },
 273         { .center_freq = 2422, .hw_value = 3, },
 274         { .center_freq = 2427, .hw_value = 4, },
 275         { .center_freq = 2432, .hw_value = 5, },
 276         { .center_freq = 2437, .hw_value = 6, },
 277         { .center_freq = 2442, .hw_value = 7, },
 278         { .center_freq = 2447, .hw_value = 8, },
 279         { .center_freq = 2452, .hw_value = 9, },
 280         { .center_freq = 2457, .hw_value = 10, },
 281         { .center_freq = 2462, .hw_value = 11, },
 282         { .center_freq = 2467, .hw_value = 12, },
 283         { .center_freq = 2472, .hw_value = 13, },
 284         { .center_freq = 2484, .hw_value = 14, },
 285 };
 286
 287 static const struct ieee80211_rate mwl8k_rates_24[] = {
 288         { .bitrate = 10, .hw_value = 2, },
 289         { .bitrate = 20, .hw_value = 4, },
 290         { .bitrate = 55, .hw_value = 11, },
 291         { .bitrate = 110, .hw_value = 22, },
 292         { .bitrate = 220, .hw_value = 44, },
 293         { .bitrate = 60, .hw_value = 12, },
 294         { .bitrate = 90, .hw_value = 18, },
 295         { .bitrate = 120, .hw_value = 24, },
 296         { .bitrate = 180, .hw_value = 36, },
 297         { .bitrate = 240, .hw_value = 48, },
 298         { .bitrate = 360, .hw_value = 72, },
 299         { .bitrate = 480, .hw_value = 96, },
 300         { .bitrate = 540, .hw_value = 108, },
 301         { .bitrate = 720, .hw_value = 144, },
 302 };
 303
 304 static const struct ieee80211_channel mwl8k_channels_50[] = {
 305         { .center_freq = 5180, .hw_value = 36, },
 306         { .center_freq = 5200, .hw_value = 40, },
 307         { .center_freq = 5220, .hw_value = 44, },
 308         { .center_freq = 5240, .hw_value = 48, },
 309 };
 310
 311 static const struct ieee80211_rate mwl8k_rates_50[] = {
 312         { .bitrate = 60, .hw_value = 12, },
 313         { .bitrate = 90, .hw_value = 18, },
 314         { .bitrate = 120, .hw_value = 24, },
 315         { .bitrate = 180, .hw_value = 36, },
 316         { .bitrate = 240, .hw_value = 48, },
 317         { .bitrate = 360, .hw_value = 72, },
 318         { .bitrate = 480, .hw_value = 96, },
 319         { .bitrate = 540, .hw_value = 108, },
 320         { .bitrate = 720, .hw_value = 144, },
 321 };
 322
 323 /* Set or get info from Firmware */
 324 #define MWL8K_CMD_GET                   0x0000
 325 #define MWL8K_CMD_SET                   0x0001
 326 #define MWL8K_CMD_SET_LIST              0x0002
 327
 328 /* Firmware command codes */
 329 #define MWL8K_CMD_CODE_DNLD             0x0001
 330 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 331 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 332 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 333 #define MWL8K_CMD_GET_STAT              0x0014
 334 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 335 #define MWL8K_CMD_RF_TX_POWER           0x001e
 336 #define MWL8K_CMD_TX_POWER              0x001f
 337 #define MWL8K_CMD_RF_ANTENNA            0x0020
 338 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 339 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 340 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 341 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 342 #define MWL8K_CMD_SET_AID               0x010d
 343 #define MWL8K_CMD_SET_RATE              0x0110
 344 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 345 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 346 #define MWL8K_CMD_SET_SLOT              0x0114
 347 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 348 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 349 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 350 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 351 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 352 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 353 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 354 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 355 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 356 #define MWL8K_CMD_UPDATE_ENCRYPTION     0x1122          /* per-vif */
 357 #define MWL8K_CMD_UPDATE_STADB          0x1123
 358
 359 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 360 {
 361         u16 command = le16_to_cpu(cmd);
 362
 363 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 364                                         snprintf(buf, bufsize, "%s", #x);\
 365                                         return buf;\
 366                                         } while (0)
 367         switch (command & ~0x8000) {
 368                 MWL8K_CMDNAME(CODE_DNLD);
 369                 MWL8K_CMDNAME(GET_HW_SPEC);
 370                 MWL8K_CMDNAME(SET_HW_SPEC);
 371                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 372                 MWL8K_CMDNAME(GET_STAT);
 373                 MWL8K_CMDNAME(RADIO_CONTROL);
 374                 MWL8K_CMDNAME(RF_TX_POWER);
 375                 MWL8K_CMDNAME(TX_POWER);
 376                 MWL8K_CMDNAME(RF_ANTENNA);
 377                 MWL8K_CMDNAME(SET_BEACON);
 378                 MWL8K_CMDNAME(SET_PRE_SCAN);
 379                 MWL8K_CMDNAME(SET_POST_SCAN);
 380                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 381                 MWL8K_CMDNAME(SET_AID);
 382                 MWL8K_CMDNAME(SET_RATE);
 383                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 384                 MWL8K_CMDNAME(RTS_THRESHOLD);
 385                 MWL8K_CMDNAME(SET_SLOT);
 386                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 387                 MWL8K_CMDNAME(SET_WMM_MODE);
 388                 MWL8K_CMDNAME(MIMO_CONFIG);
 389                 MWL8K_CMDNAME(USE_FIXED_RATE);
 390                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 391                 MWL8K_CMDNAME(SET_MAC_ADDR);
 392                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 393                 MWL8K_CMDNAME(BSS_START);
 394                 MWL8K_CMDNAME(SET_NEW_STN);
 395                 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
 396                 MWL8K_CMDNAME(UPDATE_STADB);
 397         default:
 398                 snprintf(buf, bufsize, "0x%x", cmd);
 399         }
 400 #undef MWL8K_CMDNAME
 401
 402         return buf;
 403 }
 404
 405 /* Hardware and firmware reset */
 406 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 407 {
 408         iowrite32(MWL8K_H2A_INT_RESET,
 409                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 410         iowrite32(MWL8K_H2A_INT_RESET,
 411                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 412         msleep(20);
 413 }
 414
 415 /* Release fw image */
 416 static void mwl8k_release_fw(const struct firmware **fw)
 417 {
 418         if (*fw == NULL)
 419                 return;
 420         release_firmware(*fw);
 421         *fw = NULL;
 422 }
 423
 424 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 425 {
 426         mwl8k_release_fw(&priv->fw_ucode);
 427         mwl8k_release_fw(&priv->fw_helper);
 428 }
 429
 430 /* states for asynchronous f/w loading */
 431 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 432 enum {
 433         FW_STATE_INIT = 0,
 434         FW_STATE_LOADING_PREF,
 435         FW_STATE_LOADING_ALT,
 436         FW_STATE_ERROR,
 437 };
 438
 439 /* Request fw image */
 440 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 441                             const char *fname, const struct firmware **fw,
 442                             bool nowait)
 443 {
 444         /* release current image */
 445         if (*fw != NULL)
 446                 mwl8k_release_fw(fw);
 447
 448         if (nowait)
 449                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 450                                                &priv->pdev->dev, GFP_KERNEL,
 451                                                priv, mwl8k_fw_state_machine);
 452         else
 453                 return request_firmware(fw, fname, &priv->pdev->dev);
 454 }
 455
 456 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 457                                   bool nowait)
 458 {
 459         struct mwl8k_device_info *di = priv->device_info;
 460         int rc;
 461
 462         if (di->helper_image != NULL) {
 463                 if (nowait)
 464                         rc = mwl8k_request_fw(priv, di->helper_image,
 465                                               &priv->fw_helper, true);
 466                 else
 467                         rc = mwl8k_request_fw(priv, di->helper_image,
 468                                               &priv->fw_helper, false);
 469                 if (rc)
 470                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 471                                pci_name(priv->pdev), di->helper_image);
 472
 473                 if (rc || nowait)
 474                         return rc;
 475         }
 476
 477         if (nowait) {
 478                 /*
 479                  * if we get here, no helper image is needed.  Skip the
 480                  * FW_STATE_INIT state.
 481                  */
 482                 priv->fw_state = FW_STATE_LOADING_PREF;
 483                 rc = mwl8k_request_fw(priv, fw_image,
 484                                       &priv->fw_ucode,
 485                                       true);
 486         } else
 487                 rc = mwl8k_request_fw(priv, fw_image,
 488                                       &priv->fw_ucode, false);
 489         if (rc) {
 490                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 491                        pci_name(priv->pdev), fw_image);
 492                 mwl8k_release_fw(&priv->fw_helper);
 493                 return rc;
 494         }
 495
 496         return 0;
 497 }
 498
 499 struct mwl8k_cmd_pkt {
 500         __le16  code;
 501         __le16  length;
 502         __u8    seq_num;
 503         __u8    macid;
 504         __le16  result;
 505         char    payload[0];
 506 } __packed;
 507
 508 /*
 509  * Firmware loading.
 510  */
 511 static int
 512 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 513 {
 514         void __iomem *regs = priv->regs;
 515         dma_addr_t dma_addr;
 516         int loops;
 517
 518         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 519         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 520                 return -ENOMEM;
 521
 522         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 523         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 524         iowrite32(MWL8K_H2A_INT_DOORBELL,
 525                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 526         iowrite32(MWL8K_H2A_INT_DUMMY,
 527                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 528
 529         loops = 1000;
 530         do {
 531                 u32 int_code;
 532
 533                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 534                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 535                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 536                         break;
 537                 }
 538
 539                 cond_resched();
 540                 udelay(1);
 541         } while (--loops);
 542
 543         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 544
 545         return loops ? 0 : -ETIMEDOUT;
 546 }
 547
 548 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 549                                 const u8 *data, size_t length)
 550 {
 551         struct mwl8k_cmd_pkt *cmd;
 552         int done;
 553         int rc = 0;
 554
 555         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 556         if (cmd == NULL)
 557                 return -ENOMEM;
 558
 559         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 560         cmd->seq_num = 0;
 561         cmd->macid = 0;
 562         cmd->result = 0;
 563
 564         done = 0;
 565         while (length) {
 566                 int block_size = length > 256 ? 256 : length;
 567
 568                 memcpy(cmd->payload, data + done, block_size);
 569                 cmd->length = cpu_to_le16(block_size);
 570
 571                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 572                                                 sizeof(*cmd) + block_size);
 573                 if (rc)
 574                         break;
 575
 576                 done += block_size;
 577                 length -= block_size;
 578         }
 579
 580         if (!rc) {
 581                 cmd->length = 0;
 582                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 583         }
 584
 585         kfree(cmd);
 586
 587         return rc;
 588 }
 589
 590 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 591                                 const u8 *data, size_t length)
 592 {
 593         unsigned char *buffer;
 594         int may_continue, rc = 0;
 595         u32 done, prev_block_size;
 596
 597         buffer = kmalloc(1024, GFP_KERNEL);
 598         if (buffer == NULL)
 599                 return -ENOMEM;
 600
 601         done = 0;
 602         prev_block_size = 0;
 603         may_continue = 1000;
 604         while (may_continue > 0) {
 605                 u32 block_size;
 606
 607                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 608                 if (block_size & 1) {
 609                         block_size &= ~1;
 610                         may_continue--;
 611                 } else {
 612                         done += prev_block_size;
 613                         length -= prev_block_size;
 614                 }
 615
 616                 if (block_size > 1024 || block_size > length) {
 617                         rc = -EOVERFLOW;
 618                         break;
 619                 }
 620
 621                 if (length == 0) {
 622                         rc = 0;
 623                         break;
 624                 }
 625
 626                 if (block_size == 0) {
 627                         rc = -EPROTO;
 628                         may_continue--;
 629                         udelay(1);
 630                         continue;
 631                 }
 632
 633                 prev_block_size = block_size;
 634                 memcpy(buffer, data + done, block_size);
 635
 636                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 637                 if (rc)
 638                         break;
 639         }
 640
 641         if (!rc && length != 0)
 642                 rc = -EREMOTEIO;
 643
 644         kfree(buffer);
 645
 646         return rc;
 647 }
 648
 649 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 650 {
 651         struct mwl8k_priv *priv = hw->priv;
 652         const struct firmware *fw = priv->fw_ucode;
 653         int rc;
 654         int loops;
 655
 656         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 657                 const struct firmware *helper = priv->fw_helper;
 658
 659                 if (helper == NULL) {
 660                         printk(KERN_ERR "%s: helper image needed but none "
 661                                "given\n", pci_name(priv->pdev));
 662                         return -EINVAL;
 663                 }
 664
 665                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 666                 if (rc) {
 667                         printk(KERN_ERR "%s: unable to load firmware "
 668                                "helper image\n", pci_name(priv->pdev));
 669                         return rc;
 670                 }
 671                 msleep(5);
 672
 673                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 674         } else {
 675                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 676         }
 677
 678         if (rc) {
 679                 printk(KERN_ERR "%s: unable to load firmware image\n",
 680                        pci_name(priv->pdev));
 681                 return rc;
 682         }
 683
 684         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 685
 686         loops = 500000;
 687         do {
 688                 u32 ready_code;
 689
 690                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 691                 if (ready_code == MWL8K_FWAP_READY) {
 692                         priv->ap_fw = 1;
 693                         break;
 694                 } else if (ready_code == MWL8K_FWSTA_READY) {
 695                         priv->ap_fw = 0;
 696                         break;
 697                 }
 698
 699                 cond_resched();
 700                 udelay(1);
 701         } while (--loops);
 702
 703         return loops ? 0 : -ETIMEDOUT;
 704 }
 705
 706
 707 /* DMA header used by firmware and hardware.  */
 708 struct mwl8k_dma_data {
 709         __le16 fwlen;
 710         struct ieee80211_hdr wh;
 711         char data[0];
 712 } __packed;
 713
 714 /* Routines to add/remove DMA header from skb.  */
 715 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 716 {
 717         struct mwl8k_dma_data *tr;
 718         int hdrlen;
 719
 720         tr = (struct mwl8k_dma_data *)skb->data;
 721         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 722
 723         if (hdrlen != sizeof(tr->wh)) {
 724                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 725                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 726                         *((__le16 *)(tr->data - 2)) = qos;
 727                 } else {
 728                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 729                 }
 730         }
 731
 732         if (hdrlen != sizeof(*tr))
 733                 skb_pull(skb, sizeof(*tr) - hdrlen);
 734 }
 735
 736 static void
 737 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
 738 {
 739         struct ieee80211_hdr *wh;
 740         int hdrlen;
 741         int reqd_hdrlen;
 742         struct mwl8k_dma_data *tr;
 743
 744         /*
 745          * Add a firmware DMA header; the firmware requires that we
 746          * present a 2-byte payload length followed by a 4-address
 747          * header (without QoS field), followed (optionally) by any
 748          * WEP/ExtIV header (but only filled in for CCMP).
 749          */
 750         wh = (struct ieee80211_hdr *)skb->data;
 751
 752         hdrlen = ieee80211_hdrlen(wh->frame_control);
 753         reqd_hdrlen = sizeof(*tr);
 754
 755         if (hdrlen != reqd_hdrlen)
 756                 skb_push(skb, reqd_hdrlen - hdrlen);
 757
 758         if (ieee80211_is_data_qos(wh->frame_control))
 759                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 760
 761         tr = (struct mwl8k_dma_data *)skb->data;
 762         if (wh != &tr->wh)
 763                 memmove(&tr->wh, wh, hdrlen);
 764         if (hdrlen != sizeof(tr->wh))
 765                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 766
 767         /*
 768          * Firmware length is the length of the fully formed "802.11
 769          * payload".  That is, everything except for the 802.11 header.
 770          * This includes all crypto material including the MIC.
 771          */
 772         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 773 }
 774
 775 static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
 776 {
 777         struct ieee80211_hdr *wh;
 778         struct ieee80211_tx_info *tx_info;
 779         struct ieee80211_key_conf *key_conf;
 780         int data_pad;
 781
 782         wh = (struct ieee80211_hdr *)skb->data;
 783
 784         tx_info = IEEE80211_SKB_CB(skb);
 785
 786         key_conf = NULL;
 787         if (ieee80211_is_data(wh->frame_control))
 788                 key_conf = tx_info->control.hw_key;
 789
 790         /*
 791          * Make sure the packet header is in the DMA header format (4-address
 792          * without QoS), the necessary crypto padding between the header and the
 793          * payload has already been provided by mac80211, but it doesn't add tail
 794          * padding when HW crypto is enabled.
 795          *
 796          * We have the following trailer padding requirements:
 797          * - WEP: 4 trailer bytes (ICV)
 798          * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
 799          * - CCMP: 8 trailer bytes (MIC)
 800          */
 801         data_pad = 0;
 802         if (key_conf != NULL) {
 803                 switch (key_conf->cipher) {
 804                 case WLAN_CIPHER_SUITE_WEP40:
 805                 case WLAN_CIPHER_SUITE_WEP104:
 806                         data_pad = 4;
 807                         break;
 808                 case WLAN_CIPHER_SUITE_TKIP:
 809                         data_pad = 12;
 810                         break;
 811                 case WLAN_CIPHER_SUITE_CCMP:
 812                         data_pad = 8;
 813                         break;
 814                 }
 815         }
 816         mwl8k_add_dma_header(skb, data_pad);
 817 }
 818
 819 /*
 820  * Packet reception for 88w8366 AP firmware.
 821  */
 822 struct mwl8k_rxd_8366_ap {
 823         __le16 pkt_len;
 824         __u8 sq2;
 825         __u8 rate;
 826         __le32 pkt_phys_addr;
 827         __le32 next_rxd_phys_addr;
 828         __le16 qos_control;
 829         __le16 htsig2;
 830         __le32 hw_rssi_info;
 831         __le32 hw_noise_floor_info;
 832         __u8 noise_floor;
 833         __u8 pad0[3];
 834         __u8 rssi;
 835         __u8 rx_status;
 836         __u8 channel;
 837         __u8 rx_ctrl;
 838 } __packed;
 839
 840 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 841 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 842 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 843
 844 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 845
 846 /* 8366 AP rx_status bits */
 847 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK           0x80
 848 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR        0xFF
 849 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR       0x02
 850 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR        0x04
 851 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR       0x08
 852
 853 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 854 {
 855         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 856
 857         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 858         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 859 }
 860
 861 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 862 {
 863         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 864
 865         rxd->pkt_len = cpu_to_le16(len);
 866         rxd->pkt_phys_addr = cpu_to_le32(addr);
 867         wmb();
 868         rxd->rx_ctrl = 0;
 869 }
 870
 871 static int
 872 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 873                           __le16 *qos, s8 *noise)
 874 {
 875         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 876
 877         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 878                 return -1;
 879         rmb();
 880
 881         memset(status, 0, sizeof(*status));
 882
 883         status->signal = -rxd->rssi;
 884         *noise = -rxd->noise_floor;
 885
 886         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 887                 status->flag |= RX_FLAG_HT;
 888                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 889                         status->flag |= RX_FLAG_40MHZ;
 890                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 891         } else {
 892                 int i;
 893
 894                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 895                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 896                                 status->rate_idx = i;
 897                                 break;
 898                         }
 899                 }
 900         }
 901
 902         if (rxd->channel > 14) {
 903                 status->band = IEEE80211_BAND_5GHZ;
 904                 if (!(status->flag & RX_FLAG_HT))
 905                         status->rate_idx -= 5;
 906         } else {
 907                 status->band = IEEE80211_BAND_2GHZ;
 908         }
 909         status->freq = ieee80211_channel_to_frequency(rxd->channel,
 910                                                       status->band);
 911
 912         *qos = rxd->qos_control;
 913
 914         if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
 915             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
 916             (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
 917                 status->flag |= RX_FLAG_MMIC_ERROR;
 918
 919         return le16_to_cpu(rxd->pkt_len);
 920 }
 921
 922 static struct rxd_ops rxd_8366_ap_ops = {
 923         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 924         .rxd_init       = mwl8k_rxd_8366_ap_init,
 925         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 926         .rxd_process    = mwl8k_rxd_8366_ap_process,
 927 };
 928
 929 /*
 930  * Packet reception for STA firmware.
 931  */
 932 struct mwl8k_rxd_sta {
 933         __le16 pkt_len;
 934         __u8 link_quality;
 935         __u8 noise_level;
 936         __le32 pkt_phys_addr;
 937         __le32 next_rxd_phys_addr;
 938         __le16 qos_control;
 939         __le16 rate_info;
 940         __le32 pad0[4];
 941         __u8 rssi;
 942         __u8 channel;
 943         __le16 pad1;
 944         __u8 rx_ctrl;
 945         __u8 rx_status;
 946         __u8 pad2[2];
 947 } __packed;
 948
 949 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 950 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 951 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 952 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 953 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 954 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 955
 956 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 957 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR         0x04
 958 /* ICV=0 or MIC=1 */
 959 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE          0x08
 960 /* Key is uploaded only in failure case */
 961 #define MWL8K_STA_RX_CTRL_KEY_INDEX                     0x30
 962
 963 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 964 {
 965         struct mwl8k_rxd_sta *rxd = _rxd;
 966
 967         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 968         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 969 }
 970
 971 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 972 {
 973         struct mwl8k_rxd_sta *rxd = _rxd;
 974
 975         rxd->pkt_len = cpu_to_le16(len);
 976         rxd->pkt_phys_addr = cpu_to_le32(addr);
 977         wmb();
 978         rxd->rx_ctrl = 0;
 979 }
 980
 981 static int
 982 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 983                        __le16 *qos, s8 *noise)
 984 {
 985         struct mwl8k_rxd_sta *rxd = _rxd;
 986         u16 rate_info;
 987
 988         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 989                 return -1;
 990         rmb();
 991
 992         rate_info = le16_to_cpu(rxd->rate_info);
 993
 994         memset(status, 0, sizeof(*status));
 995
 996         status->signal = -rxd->rssi;
 997         *noise = -rxd->noise_level;
 998         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 999         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1000
1001         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1002                 status->flag |= RX_FLAG_SHORTPRE;
1003         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1004                 status->flag |= RX_FLAG_40MHZ;
1005         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1006                 status->flag |= RX_FLAG_SHORT_GI;
1007         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1008                 status->flag |= RX_FLAG_HT;
1009
1010         if (rxd->channel > 14) {
1011                 status->band = IEEE80211_BAND_5GHZ;
1012                 if (!(status->flag & RX_FLAG_HT))
1013                         status->rate_idx -= 5;
1014         } else {
1015                 status->band = IEEE80211_BAND_2GHZ;
1016         }
1017         status->freq = ieee80211_channel_to_frequency(rxd->channel,
1018                                                       status->band);
1019
1020         *qos = rxd->qos_control;
1021         if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1022             (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1023                 status->flag |= RX_FLAG_MMIC_ERROR;
1024
1025         return le16_to_cpu(rxd->pkt_len);
1026 }
1027
1028 static struct rxd_ops rxd_sta_ops = {
1029         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
1030         .rxd_init       = mwl8k_rxd_sta_init,
1031         .rxd_refill     = mwl8k_rxd_sta_refill,
1032         .rxd_process    = mwl8k_rxd_sta_process,
1033 };
1034
1035
1036 #define MWL8K_RX_DESCS          256
1037 #define MWL8K_RX_MAXSZ          3800
1038
1039 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1040 {
1041         struct mwl8k_priv *priv = hw->priv;
1042         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1043         int size;
1044         int i;
1045
1046         rxq->rxd_count = 0;
1047         rxq->head = 0;
1048         rxq->tail = 0;
1049
1050         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1051
1052         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1053         if (rxq->rxd == NULL) {
1054                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1055                 return -ENOMEM;
1056         }
1057         memset(rxq->rxd, 0, size);
1058
1059         rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1060         if (rxq->buf == NULL) {
1061                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1062                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1063                 return -ENOMEM;
1064         }
1065
1066         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1067                 int desc_size;
1068                 void *rxd;
1069                 int nexti;
1070                 dma_addr_t next_dma_addr;
1071
1072                 desc_size = priv->rxd_ops->rxd_size;
1073                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1074
1075                 nexti = i + 1;
1076                 if (nexti == MWL8K_RX_DESCS)
1077                         nexti = 0;
1078                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1079
1080                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1081         }
1082
1083         return 0;
1084 }
1085
1086 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1087 {
1088         struct mwl8k_priv *priv = hw->priv;
1089         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1090         int refilled;
1091
1092         refilled = 0;
1093         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1094                 struct sk_buff *skb;
1095                 dma_addr_t addr;
1096                 int rx;
1097                 void *rxd;
1098
1099                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1100                 if (skb == NULL)
1101                         break;
1102
1103                 addr = pci_map_single(priv->pdev, skb->data,
1104                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1105
1106                 rxq->rxd_count++;
1107                 rx = rxq->tail++;
1108                 if (rxq->tail == MWL8K_RX_DESCS)
1109                         rxq->tail = 0;
1110                 rxq->buf[rx].skb = skb;
1111                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1112
1113                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1114                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1115
1116                 refilled++;
1117         }
1118
1119         return refilled;
1120 }
1121
1122 /* Must be called only when the card's reception is completely halted */
1123 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1124 {
1125         struct mwl8k_priv *priv = hw->priv;
1126         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1127         int i;
1128
1129         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1130                 if (rxq->buf[i].skb != NULL) {
1131                         pci_unmap_single(priv->pdev,
1132                                          dma_unmap_addr(&rxq->buf[i], dma),
1133                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1134                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1135
1136                         kfree_skb(rxq->buf[i].skb);
1137                         rxq->buf[i].skb = NULL;
1138                 }
1139         }
1140
1141         kfree(rxq->buf);
1142         rxq->buf = NULL;
1143
1144         pci_free_consistent(priv->pdev,
1145                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1146                             rxq->rxd, rxq->rxd_dma);
1147         rxq->rxd = NULL;
1148 }
1149
1150
1151 /*
1152  * Scan a list of BSSIDs to process for finalize join.
1153  * Allows for extension to process multiple BSSIDs.
1154  */
1155 static inline int
1156 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1157 {
1158         return priv->capture_beacon &&
1159                 ieee80211_is_beacon(wh->frame_control) &&
1160                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1161 }
1162
1163 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1164                                      struct sk_buff *skb)
1165 {
1166         struct mwl8k_priv *priv = hw->priv;
1167
1168         priv->capture_beacon = false;
1169         memset(priv->capture_bssid, 0, ETH_ALEN);
1170
1171         /*
1172          * Use GFP_ATOMIC as rxq_process is called from
1173          * the primary interrupt handler, memory allocation call
1174          * must not sleep.
1175          */
1176         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1177         if (priv->beacon_skb != NULL)
1178                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1179 }
1180
1181 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1182                                                    u8 *bssid)
1183 {
1184         struct mwl8k_vif *mwl8k_vif;
1185
1186         list_for_each_entry(mwl8k_vif,
1187                             vif_list, list) {
1188                 if (memcmp(bssid, mwl8k_vif->bssid,
1189                            ETH_ALEN) == 0)
1190                         return mwl8k_vif;
1191         }
1192
1193         return NULL;
1194 }
1195
1196 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1197 {
1198         struct mwl8k_priv *priv = hw->priv;
1199         struct mwl8k_vif *mwl8k_vif = NULL;
1200         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1201         int processed;
1202
1203         processed = 0;
1204         while (rxq->rxd_count && limit--) {
1205                 struct sk_buff *skb;
1206                 void *rxd;
1207                 int pkt_len;
1208                 struct ieee80211_rx_status status;
1209                 struct ieee80211_hdr *wh;
1210                 __le16 qos;
1211
1212                 skb = rxq->buf[rxq->head].skb;
1213                 if (skb == NULL)
1214                         break;
1215
1216                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1217
1218                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1219                                                         &priv->noise);
1220                 if (pkt_len < 0)
1221                         break;
1222
1223                 rxq->buf[rxq->head].skb = NULL;
1224
1225                 pci_unmap_single(priv->pdev,
1226                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1227                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1228                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1229
1230                 rxq->head++;
1231                 if (rxq->head == MWL8K_RX_DESCS)
1232                         rxq->head = 0;
1233
1234                 rxq->rxd_count--;
1235
1236                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1237
1238                 /*
1239                  * Check for a pending join operation.  Save a
1240                  * copy of the beacon and schedule a tasklet to
1241                  * send a FINALIZE_JOIN command to the firmware.
1242                  */
1243                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1244                         mwl8k_save_beacon(hw, skb);
1245
1246                 if (ieee80211_has_protected(wh->frame_control)) {
1247
1248                         /* Check if hw crypto has been enabled for
1249                          * this bss. If yes, set the status flags
1250                          * accordingly
1251                          */
1252                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1253                                                                 wh->addr1);
1254
1255                         if (mwl8k_vif != NULL &&
1256                             mwl8k_vif->is_hw_crypto_enabled == true) {
1257                                 /*
1258                                  * When MMIC ERROR is encountered
1259                                  * by the firmware, payload is
1260                                  * dropped and only 32 bytes of
1261                                  * mwl8k Firmware header is sent
1262                                  * to the host.
1263                                  *
1264                                  * We need to add four bytes of
1265                                  * key information.  In it
1266                                  * MAC80211 expects keyidx set to
1267                                  * 0 for triggering Counter
1268                                  * Measure of MMIC failure.
1269                                  */
1270                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1271                                         struct mwl8k_dma_data *tr;
1272                                         tr = (struct mwl8k_dma_data *)skb->data;
1273                                         memset((void *)&(tr->data), 0, 4);
1274                                         pkt_len += 4;
1275                                 }
1276
1277                                 if (!ieee80211_is_auth(wh->frame_control))
1278                                         status.flag |= RX_FLAG_IV_STRIPPED |
1279                                                        RX_FLAG_DECRYPTED |
1280                                                        RX_FLAG_MMIC_STRIPPED;
1281                         }
1282                 }
1283
1284                 skb_put(skb, pkt_len);
1285                 mwl8k_remove_dma_header(skb, qos);
1286                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1287                 ieee80211_rx_irqsafe(hw, skb);
1288
1289                 processed++;
1290         }
1291
1292         return processed;
1293 }
1294
1295
1296 /*
1297  * Packet transmission.
1298  */
1299
1300 #define MWL8K_TXD_STATUS_OK                     0x00000001
1301 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1302 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1303 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1304 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1305
1306 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1307 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1308 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1309 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1310 #define MWL8K_QOS_EOSP                          0x0010
1311
1312 struct mwl8k_tx_desc {
1313         __le32 status;
1314         __u8 data_rate;
1315         __u8 tx_priority;
1316         __le16 qos_control;
1317         __le32 pkt_phys_addr;
1318         __le16 pkt_len;
1319         __u8 dest_MAC_addr[ETH_ALEN];
1320         __le32 next_txd_phys_addr;
1321         __le32 reserved;
1322         __le16 rate_info;
1323         __u8 peer_id;
1324         __u8 tx_frag_cnt;
1325 } __packed;
1326
1327 #define MWL8K_TX_DESCS          128
1328
1329 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1330 {
1331         struct mwl8k_priv *priv = hw->priv;
1332         struct mwl8k_tx_queue *txq = priv->txq + index;
1333         int size;
1334         int i;
1335
1336         txq->len = 0;
1337         txq->head = 0;
1338         txq->tail = 0;
1339
1340         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1341
1342         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1343         if (txq->txd == NULL) {
1344                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1345                 return -ENOMEM;
1346         }
1347         memset(txq->txd, 0, size);
1348
1349         txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1350         if (txq->skb == NULL) {
1351                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1352                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1353                 return -ENOMEM;
1354         }
1355
1356         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1357                 struct mwl8k_tx_desc *tx_desc;
1358                 int nexti;
1359
1360                 tx_desc = txq->txd + i;
1361                 nexti = (i + 1) % MWL8K_TX_DESCS;
1362
1363                 tx_desc->status = 0;
1364                 tx_desc->next_txd_phys_addr =
1365                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1366         }
1367
1368         return 0;
1369 }
1370
1371 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1372 {
1373         iowrite32(MWL8K_H2A_INT_PPA_READY,
1374                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1375         iowrite32(MWL8K_H2A_INT_DUMMY,
1376                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1377         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1378 }
1379
1380 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1381 {
1382         struct mwl8k_priv *priv = hw->priv;
1383         int i;
1384
1385         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1386                 struct mwl8k_tx_queue *txq = priv->txq + i;
1387                 int fw_owned = 0;
1388                 int drv_owned = 0;
1389                 int unused = 0;
1390                 int desc;
1391
1392                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1393                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1394                         u32 status;
1395
1396                         status = le32_to_cpu(tx_desc->status);
1397                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1398                                 fw_owned++;
1399                         else
1400                                 drv_owned++;
1401
1402                         if (tx_desc->pkt_len == 0)
1403                                 unused++;
1404                 }
1405
1406                 wiphy_err(hw->wiphy,
1407                           "txq[%d] len=%d head=%d tail=%d "
1408                           "fw_owned=%d drv_owned=%d unused=%d\n",
1409                           i,
1410                           txq->len, txq->head, txq->tail,
1411                           fw_owned, drv_owned, unused);
1412         }
1413 }
1414
1415 /*
1416  * Must be called with priv->fw_mutex held and tx queues stopped.
1417  */
1418 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1419
1420 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1421 {
1422         struct mwl8k_priv *priv = hw->priv;
1423         DECLARE_COMPLETION_ONSTACK(tx_wait);
1424         int retry;
1425         int rc;
1426
1427         might_sleep();
1428
1429         /*
1430          * The TX queues are stopped at this point, so this test
1431          * doesn't need to take ->tx_lock.
1432          */
1433         if (!priv->pending_tx_pkts)
1434                 return 0;
1435
1436         retry = 0;
1437         rc = 0;
1438
1439         spin_lock_bh(&priv->tx_lock);
1440         priv->tx_wait = &tx_wait;
1441         while (!rc) {
1442                 int oldcount;
1443                 unsigned long timeout;
1444
1445                 oldcount = priv->pending_tx_pkts;
1446
1447                 spin_unlock_bh(&priv->tx_lock);
1448                 timeout = wait_for_completion_timeout(&tx_wait,
1449                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1450                 spin_lock_bh(&priv->tx_lock);
1451
1452                 if (timeout) {
1453                         WARN_ON(priv->pending_tx_pkts);
1454                         if (retry) {
1455                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1456                         }
1457                         break;
1458                 }
1459
1460                 if (priv->pending_tx_pkts < oldcount) {
1461                         wiphy_notice(hw->wiphy,
1462                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1463                                      oldcount, priv->pending_tx_pkts);
1464                         retry = 1;
1465                         continue;
1466                 }
1467
1468                 priv->tx_wait = NULL;
1469
1470                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1471                           MWL8K_TX_WAIT_TIMEOUT_MS);
1472                 mwl8k_dump_tx_rings(hw);
1473
1474                 rc = -ETIMEDOUT;
1475         }
1476         spin_unlock_bh(&priv->tx_lock);
1477
1478         return rc;
1479 }
1480
1481 #define MWL8K_TXD_SUCCESS(status)                               \
1482         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1483                      MWL8K_TXD_STATUS_OK_RETRY |                \
1484                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1485
1486 static int
1487 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1488 {
1489         struct mwl8k_priv *priv = hw->priv;
1490         struct mwl8k_tx_queue *txq = priv->txq + index;
1491         int processed;
1492
1493         processed = 0;
1494         while (txq->len > 0 && limit--) {
1495                 int tx;
1496                 struct mwl8k_tx_desc *tx_desc;
1497                 unsigned long addr;
1498                 int size;
1499                 struct sk_buff *skb;
1500                 struct ieee80211_tx_info *info;
1501                 u32 status;
1502
1503                 tx = txq->head;
1504                 tx_desc = txq->txd + tx;
1505
1506                 status = le32_to_cpu(tx_desc->status);
1507
1508                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1509                         if (!force)
1510                                 break;
1511                         tx_desc->status &=
1512                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1513                 }
1514
1515                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1516                 BUG_ON(txq->len == 0);
1517                 txq->len--;
1518                 priv->pending_tx_pkts--;
1519
1520                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1521                 size = le16_to_cpu(tx_desc->pkt_len);
1522                 skb = txq->skb[tx];
1523                 txq->skb[tx] = NULL;
1524
1525                 BUG_ON(skb == NULL);
1526                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1527
1528                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1529
1530                 /* Mark descriptor as unused */
1531                 tx_desc->pkt_phys_addr = 0;
1532                 tx_desc->pkt_len = 0;
1533
1534                 info = IEEE80211_SKB_CB(skb);
1535                 ieee80211_tx_info_clear_status(info);
1536
1537                 /* Rate control is happening in the firmware.
1538                  * Ensure no tx rate is being reported.
1539                  */
1540                 info->status.rates[0].idx = -1;
1541                 info->status.rates[0].count = 1;
1542
1543                 if (MWL8K_TXD_SUCCESS(status))
1544                         info->flags |= IEEE80211_TX_STAT_ACK;
1545
1546                 ieee80211_tx_status_irqsafe(hw, skb);
1547
1548                 processed++;
1549         }
1550
1551         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1552                 ieee80211_wake_queue(hw, index);
1553
1554         return processed;
1555 }
1556
1557 /* must be called only when the card's transmit is completely halted */
1558 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1559 {
1560         struct mwl8k_priv *priv = hw->priv;
1561         struct mwl8k_tx_queue *txq = priv->txq + index;
1562
1563         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1564
1565         kfree(txq->skb);
1566         txq->skb = NULL;
1567
1568         pci_free_consistent(priv->pdev,
1569                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1570                             txq->txd, txq->txd_dma);
1571         txq->txd = NULL;
1572 }
1573
1574 static void
1575 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1576 {
1577         struct mwl8k_priv *priv = hw->priv;
1578         struct ieee80211_tx_info *tx_info;
1579         struct mwl8k_vif *mwl8k_vif;
1580         struct ieee80211_hdr *wh;
1581         struct mwl8k_tx_queue *txq;
1582         struct mwl8k_tx_desc *tx;
1583         dma_addr_t dma;
1584         u32 txstatus;
1585         u8 txdatarate;
1586         u16 qos;
1587
1588         wh = (struct ieee80211_hdr *)skb->data;
1589         if (ieee80211_is_data_qos(wh->frame_control))
1590                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1591         else
1592                 qos = 0;
1593
1594         if (priv->ap_fw)
1595                 mwl8k_encapsulate_tx_frame(skb);
1596         else
1597                 mwl8k_add_dma_header(skb, 0);
1598
1599         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1600
1601         tx_info = IEEE80211_SKB_CB(skb);
1602         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1603
1604         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1605                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1606                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1607                 mwl8k_vif->seqno += 0x10;
1608         }
1609
1610         /* Setup firmware control bit fields for each frame type.  */
1611         txstatus = 0;
1612         txdatarate = 0;
1613         if (ieee80211_is_mgmt(wh->frame_control) ||
1614             ieee80211_is_ctl(wh->frame_control)) {
1615                 txdatarate = 0;
1616                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1617         } else if (ieee80211_is_data(wh->frame_control)) {
1618                 txdatarate = 1;
1619                 if (is_multicast_ether_addr(wh->addr1))
1620                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1621
1622                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1623                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1624                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1625                 else
1626                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1627         }
1628
1629         dma = pci_map_single(priv->pdev, skb->data,
1630                                 skb->len, PCI_DMA_TODEVICE);
1631
1632         if (pci_dma_mapping_error(priv->pdev, dma)) {
1633                 wiphy_debug(hw->wiphy,
1634                             "failed to dma map skb, dropping TX frame.\n");
1635                 dev_kfree_skb(skb);
1636                 return;
1637         }
1638
1639         spin_lock_bh(&priv->tx_lock);
1640
1641         txq = priv->txq + index;
1642
1643         BUG_ON(txq->skb[txq->tail] != NULL);
1644         txq->skb[txq->tail] = skb;
1645
1646         tx = txq->txd + txq->tail;
1647         tx->data_rate = txdatarate;
1648         tx->tx_priority = index;
1649         tx->qos_control = cpu_to_le16(qos);
1650         tx->pkt_phys_addr = cpu_to_le32(dma);
1651         tx->pkt_len = cpu_to_le16(skb->len);
1652         tx->rate_info = 0;
1653         if (!priv->ap_fw && tx_info->control.sta != NULL)
1654                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1655         else
1656                 tx->peer_id = 0;
1657         wmb();
1658         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1659
1660         txq->len++;
1661         priv->pending_tx_pkts++;
1662
1663         txq->tail++;
1664         if (txq->tail == MWL8K_TX_DESCS)
1665                 txq->tail = 0;
1666
1667         if (txq->head == txq->tail)
1668                 ieee80211_stop_queue(hw, index);
1669
1670         mwl8k_tx_start(priv);
1671
1672         spin_unlock_bh(&priv->tx_lock);
1673 }
1674
1675
1676 /*
1677  * Firmware access.
1678  *
1679  * We have the following requirements for issuing firmware commands:
1680  * - Some commands require that the packet transmit path is idle when
1681  *   the command is issued.  (For simplicity, we'll just quiesce the
1682  *   transmit path for every command.)
1683  * - There are certain sequences of commands that need to be issued to
1684  *   the hardware sequentially, with no other intervening commands.
1685  *
1686  * This leads to an implementation of a "firmware lock" as a mutex that
1687  * can be taken recursively, and which is taken by both the low-level
1688  * command submission function (mwl8k_post_cmd) as well as any users of
1689  * that function that require issuing of an atomic sequence of commands,
1690  * and quiesces the transmit path whenever it's taken.
1691  */
1692 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1693 {
1694         struct mwl8k_priv *priv = hw->priv;
1695
1696         if (priv->fw_mutex_owner != current) {
1697                 int rc;
1698
1699                 mutex_lock(&priv->fw_mutex);
1700                 ieee80211_stop_queues(hw);
1701
1702                 rc = mwl8k_tx_wait_empty(hw);
1703                 if (rc) {
1704                         ieee80211_wake_queues(hw);
1705                         mutex_unlock(&priv->fw_mutex);
1706
1707                         return rc;
1708                 }
1709
1710                 priv->fw_mutex_owner = current;
1711         }
1712
1713         priv->fw_mutex_depth++;
1714
1715         return 0;
1716 }
1717
1718 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1719 {
1720         struct mwl8k_priv *priv = hw->priv;
1721
1722         if (!--priv->fw_mutex_depth) {
1723                 ieee80211_wake_queues(hw);
1724                 priv->fw_mutex_owner = NULL;
1725                 mutex_unlock(&priv->fw_mutex);
1726         }
1727 }
1728
1729
1730 /*
1731  * Command processing.
1732  */
1733
1734 /* Timeout firmware commands after 10s */
1735 #define MWL8K_CMD_TIMEOUT_MS    10000
1736
1737 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1738 {
1739         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1740         struct mwl8k_priv *priv = hw->priv;
1741         void __iomem *regs = priv->regs;
1742         dma_addr_t dma_addr;
1743         unsigned int dma_size;
1744         int rc;
1745         unsigned long timeout = 0;
1746         u8 buf[32];
1747
1748         cmd->result = (__force __le16) 0xffff;
1749         dma_size = le16_to_cpu(cmd->length);
1750         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1751                                   PCI_DMA_BIDIRECTIONAL);
1752         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1753                 return -ENOMEM;
1754
1755         rc = mwl8k_fw_lock(hw);
1756         if (rc) {
1757                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1758                                                 PCI_DMA_BIDIRECTIONAL);
1759                 return rc;
1760         }
1761
1762         priv->hostcmd_wait = &cmd_wait;
1763         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1764         iowrite32(MWL8K_H2A_INT_DOORBELL,
1765                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1766         iowrite32(MWL8K_H2A_INT_DUMMY,
1767                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1768
1769         timeout = wait_for_completion_timeout(&cmd_wait,
1770                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1771
1772         priv->hostcmd_wait = NULL;
1773
1774         mwl8k_fw_unlock(hw);
1775
1776         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1777                                         PCI_DMA_BIDIRECTIONAL);
1778
1779         if (!timeout) {
1780                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1781                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1782                           MWL8K_CMD_TIMEOUT_MS);
1783                 rc = -ETIMEDOUT;
1784         } else {
1785                 int ms;
1786
1787                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1788
1789                 rc = cmd->result ? -EINVAL : 0;
1790                 if (rc)
1791                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1792                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1793                                   le16_to_cpu(cmd->result));
1794                 else if (ms > 2000)
1795                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1796                                      mwl8k_cmd_name(cmd->code,
1797                                                     buf, sizeof(buf)),
1798                                      ms);
1799         }
1800
1801         return rc;
1802 }
1803
1804 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1805                                  struct ieee80211_vif *vif,
1806                                  struct mwl8k_cmd_pkt *cmd)
1807 {
1808         if (vif != NULL)
1809                 cmd->macid = MWL8K_VIF(vif)->macid;
1810         return mwl8k_post_cmd(hw, cmd);
1811 }
1812
1813 /*
1814  * Setup code shared between STA and AP firmware images.
1815  */
1816 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1817 {
1818         struct mwl8k_priv *priv = hw->priv;
1819
1820         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1821         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1822
1823         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1824         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1825
1826         priv->band_24.band = IEEE80211_BAND_2GHZ;
1827         priv->band_24.channels = priv->channels_24;
1828         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1829         priv->band_24.bitrates = priv->rates_24;
1830         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1831
1832         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1833 }
1834
1835 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1836 {
1837         struct mwl8k_priv *priv = hw->priv;
1838
1839         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1840         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1841
1842         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1843         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1844
1845         priv->band_50.band = IEEE80211_BAND_5GHZ;
1846         priv->band_50.channels = priv->channels_50;
1847         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1848         priv->band_50.bitrates = priv->rates_50;
1849         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1850
1851         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1852 }
1853
1854 /*
1855  * CMD_GET_HW_SPEC (STA version).
1856  */
1857 struct mwl8k_cmd_get_hw_spec_sta {
1858         struct mwl8k_cmd_pkt header;
1859         __u8 hw_rev;
1860         __u8 host_interface;
1861         __le16 num_mcaddrs;
1862         __u8 perm_addr[ETH_ALEN];
1863         __le16 region_code;
1864         __le32 fw_rev;
1865         __le32 ps_cookie;
1866         __le32 caps;
1867         __u8 mcs_bitmap[16];
1868         __le32 rx_queue_ptr;
1869         __le32 num_tx_queues;
1870         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1871         __le32 caps2;
1872         __le32 num_tx_desc_per_queue;
1873         __le32 total_rxd;
1874 } __packed;
1875
1876 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1877 #define MWL8K_CAP_GREENFIELD            0x08000000
1878 #define MWL8K_CAP_AMPDU                 0x04000000
1879 #define MWL8K_CAP_RX_STBC               0x01000000
1880 #define MWL8K_CAP_TX_STBC               0x00800000
1881 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1882 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1883 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1884 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1885 #define MWL8K_CAP_DELAY_BA              0x00003000
1886 #define MWL8K_CAP_MIMO                  0x00000200
1887 #define MWL8K_CAP_40MHZ                 0x00000100
1888 #define MWL8K_CAP_BAND_MASK             0x00000007
1889 #define MWL8K_CAP_5GHZ                  0x00000004
1890 #define MWL8K_CAP_2GHZ4                 0x00000001
1891
1892 static void
1893 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1894                   struct ieee80211_supported_band *band, u32 cap)
1895 {
1896         int rx_streams;
1897         int tx_streams;
1898
1899         band->ht_cap.ht_supported = 1;
1900
1901         if (cap & MWL8K_CAP_MAX_AMSDU)
1902                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1903         if (cap & MWL8K_CAP_GREENFIELD)
1904                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1905         if (cap & MWL8K_CAP_AMPDU) {
1906                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1907                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1908                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1909         }
1910         if (cap & MWL8K_CAP_RX_STBC)
1911                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1912         if (cap & MWL8K_CAP_TX_STBC)
1913                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1914         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1915                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1916         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1917                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1918         if (cap & MWL8K_CAP_DELAY_BA)
1919                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1920         if (cap & MWL8K_CAP_40MHZ)
1921                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1922
1923         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1924         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1925
1926         band->ht_cap.mcs.rx_mask[0] = 0xff;
1927         if (rx_streams >= 2)
1928                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1929         if (rx_streams >= 3)
1930                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1931         band->ht_cap.mcs.rx_mask[4] = 0x01;
1932         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1933
1934         if (rx_streams != tx_streams) {
1935                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1936                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1937                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1938         }
1939 }
1940
1941 static void
1942 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1943 {
1944         struct mwl8k_priv *priv = hw->priv;
1945
1946         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1947                 mwl8k_setup_2ghz_band(hw);
1948                 if (caps & MWL8K_CAP_MIMO)
1949                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1950         }
1951
1952         if (caps & MWL8K_CAP_5GHZ) {
1953                 mwl8k_setup_5ghz_band(hw);
1954                 if (caps & MWL8K_CAP_MIMO)
1955                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1956         }
1957 }
1958
1959 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1960 {
1961         struct mwl8k_priv *priv = hw->priv;
1962         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1963         int rc;
1964         int i;
1965
1966         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1967         if (cmd == NULL)
1968                 return -ENOMEM;
1969
1970         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1971         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1972
1973         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1974         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1975         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1976         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1977         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1978                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1979         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1980         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1981
1982         rc = mwl8k_post_cmd(hw, &cmd->header);
1983
1984         if (!rc) {
1985                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1986                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1987                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1988                 priv->hw_rev = cmd->hw_rev;
1989                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1990                 priv->ap_macids_supported = 0x00000000;
1991                 priv->sta_macids_supported = 0x00000001;
1992         }
1993
1994         kfree(cmd);
1995         return rc;
1996 }
1997
1998 /*
1999  * CMD_GET_HW_SPEC (AP version).
2000  */
2001 struct mwl8k_cmd_get_hw_spec_ap {
2002         struct mwl8k_cmd_pkt header;
2003         __u8 hw_rev;
2004         __u8 host_interface;
2005         __le16 num_wcb;
2006         __le16 num_mcaddrs;
2007         __u8 perm_addr[ETH_ALEN];
2008         __le16 region_code;
2009         __le16 num_antenna;
2010         __le32 fw_rev;
2011         __le32 wcbbase0;
2012         __le32 rxwrptr;
2013         __le32 rxrdptr;
2014         __le32 ps_cookie;
2015         __le32 wcbbase1;
2016         __le32 wcbbase2;
2017         __le32 wcbbase3;
2018         __le32 fw_api_version;
2019 } __packed;
2020
2021 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2022 {
2023         struct mwl8k_priv *priv = hw->priv;
2024         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2025         int rc;
2026         u32 api_version;
2027
2028         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2029         if (cmd == NULL)
2030                 return -ENOMEM;
2031
2032         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2033         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2034
2035         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2036         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2037
2038         rc = mwl8k_post_cmd(hw, &cmd->header);
2039
2040         if (!rc) {
2041                 int off;
2042
2043                 api_version = le32_to_cpu(cmd->fw_api_version);
2044                 if (priv->device_info->fw_api_ap != api_version) {
2045                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2046                                "  Expected %d got %d.\n", MWL8K_NAME,
2047                                priv->device_info->part_name,
2048                                priv->device_info->fw_api_ap,
2049                                api_version);
2050                         rc = -EINVAL;
2051                         goto done;
2052                 }
2053                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2054                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2055                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2056                 priv->hw_rev = cmd->hw_rev;
2057                 mwl8k_setup_2ghz_band(hw);
2058                 priv->ap_macids_supported = 0x000000ff;
2059                 priv->sta_macids_supported = 0x00000000;
2060
2061                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2062                 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
2063
2064                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2065                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2066
2067                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2068                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2069
2070                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2071                 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
2072
2073                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2074                 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
2075
2076                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2077                 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
2078         }
2079
2080 done:
2081         kfree(cmd);
2082         return rc;
2083 }
2084
2085 /*
2086  * CMD_SET_HW_SPEC.
2087  */
2088 struct mwl8k_cmd_set_hw_spec {
2089         struct mwl8k_cmd_pkt header;
2090         __u8 hw_rev;
2091         __u8 host_interface;
2092         __le16 num_mcaddrs;
2093         __u8 perm_addr[ETH_ALEN];
2094         __le16 region_code;
2095         __le32 fw_rev;
2096         __le32 ps_cookie;
2097         __le32 caps;
2098         __le32 rx_queue_ptr;
2099         __le32 num_tx_queues;
2100         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
2101         __le32 flags;
2102         __le32 num_tx_desc_per_queue;
2103         __le32 total_rxd;
2104 } __packed;
2105
2106 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2107 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2108 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2109
2110 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2111 {
2112         struct mwl8k_priv *priv = hw->priv;
2113         struct mwl8k_cmd_set_hw_spec *cmd;
2114         int rc;
2115         int i;
2116
2117         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2118         if (cmd == NULL)
2119                 return -ENOMEM;
2120
2121         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2122         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2123
2124         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2125         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2126         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
2127
2128         /*
2129          * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2130          * that order. Firmware has Q3 as highest priority and Q0 as lowest
2131          * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2132          * priority is interpreted the right way in firmware.
2133          */
2134         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
2135                 int j = MWL8K_TX_QUEUES - 1 - i;
2136                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2137         }
2138
2139         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2140                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2141                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2142         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2143         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2144
2145         rc = mwl8k_post_cmd(hw, &cmd->header);
2146         kfree(cmd);
2147
2148         return rc;
2149 }
2150
2151 /*
2152  * CMD_MAC_MULTICAST_ADR.
2153  */
2154 struct mwl8k_cmd_mac_multicast_adr {
2155         struct mwl8k_cmd_pkt header;
2156         __le16 action;
2157         __le16 numaddr;
2158         __u8 addr[0][ETH_ALEN];
2159 };
2160
2161 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2162 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2163 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2164 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2165
2166 static struct mwl8k_cmd_pkt *
2167 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2168                               struct netdev_hw_addr_list *mc_list)
2169 {
2170         struct mwl8k_priv *priv = hw->priv;
2171         struct mwl8k_cmd_mac_multicast_adr *cmd;
2172         int size;
2173         int mc_count = 0;
2174
2175         if (mc_list)
2176                 mc_count = netdev_hw_addr_list_count(mc_list);
2177
2178         if (allmulti || mc_count > priv->num_mcaddrs) {
2179                 allmulti = 1;
2180                 mc_count = 0;
2181         }
2182
2183         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2184
2185         cmd = kzalloc(size, GFP_ATOMIC);
2186         if (cmd == NULL)
2187                 return NULL;
2188
2189         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2190         cmd->header.length = cpu_to_le16(size);
2191         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2192                                   MWL8K_ENABLE_RX_BROADCAST);
2193
2194         if (allmulti) {
2195                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2196         } else if (mc_count) {
2197                 struct netdev_hw_addr *ha;
2198                 int i = 0;
2199
2200                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2201                 cmd->numaddr = cpu_to_le16(mc_count);
2202                 netdev_hw_addr_list_for_each(ha, mc_list) {
2203                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2204                 }
2205         }
2206
2207         return &cmd->header;
2208 }
2209
2210 /*
2211  * CMD_GET_STAT.
2212  */
2213 struct mwl8k_cmd_get_stat {
2214         struct mwl8k_cmd_pkt header;
2215         __le32 stats[64];
2216 } __packed;
2217
2218 #define MWL8K_STAT_ACK_FAILURE  9
2219 #define MWL8K_STAT_RTS_FAILURE  12
2220 #define MWL8K_STAT_FCS_ERROR    24
2221 #define MWL8K_STAT_RTS_SUCCESS  11
2222
2223 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2224                               struct ieee80211_low_level_stats *stats)
2225 {
2226         struct mwl8k_cmd_get_stat *cmd;
2227         int rc;
2228
2229         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2230         if (cmd == NULL)
2231                 return -ENOMEM;
2232
2233         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2234         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2235
2236         rc = mwl8k_post_cmd(hw, &cmd->header);
2237         if (!rc) {
2238                 stats->dot11ACKFailureCount =
2239                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2240                 stats->dot11RTSFailureCount =
2241                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2242                 stats->dot11FCSErrorCount =
2243                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2244                 stats->dot11RTSSuccessCount =
2245                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2246         }
2247         kfree(cmd);
2248
2249         return rc;
2250 }
2251
2252 /*
2253  * CMD_RADIO_CONTROL.
2254  */
2255 struct mwl8k_cmd_radio_control {
2256         struct mwl8k_cmd_pkt header;
2257         __le16 action;
2258         __le16 control;
2259         __le16 radio_on;
2260 } __packed;
2261
2262 static int
2263 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2264 {
2265         struct mwl8k_priv *priv = hw->priv;
2266         struct mwl8k_cmd_radio_control *cmd;
2267         int rc;
2268
2269         if (enable == priv->radio_on && !force)
2270                 return 0;
2271
2272         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2273         if (cmd == NULL)
2274                 return -ENOMEM;
2275
2276         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2277         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2278         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2279         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2280         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2281
2282         rc = mwl8k_post_cmd(hw, &cmd->header);
2283         kfree(cmd);
2284
2285         if (!rc)
2286                 priv->radio_on = enable;
2287
2288         return rc;
2289 }
2290
2291 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2292 {
2293         return mwl8k_cmd_radio_control(hw, 0, 0);
2294 }
2295
2296 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2297 {
2298         return mwl8k_cmd_radio_control(hw, 1, 0);
2299 }
2300
2301 static int
2302 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2303 {
2304         struct mwl8k_priv *priv = hw->priv;
2305
2306         priv->radio_short_preamble = short_preamble;
2307
2308         return mwl8k_cmd_radio_control(hw, 1, 1);
2309 }
2310
2311 /*
2312  * CMD_RF_TX_POWER.
2313  */
2314 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2315
2316 struct mwl8k_cmd_rf_tx_power {
2317         struct mwl8k_cmd_pkt header;
2318         __le16 action;
2319         __le16 support_level;
2320         __le16 current_level;
2321         __le16 reserved;
2322         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2323 } __packed;
2324
2325 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2326 {
2327         struct mwl8k_cmd_rf_tx_power *cmd;
2328         int rc;
2329
2330         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2331         if (cmd == NULL)
2332                 return -ENOMEM;
2333
2334         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2335         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2336         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2337         cmd->support_level = cpu_to_le16(dBm);
2338
2339         rc = mwl8k_post_cmd(hw, &cmd->header);
2340         kfree(cmd);
2341
2342         return rc;
2343 }
2344
2345 /*
2346  * CMD_TX_POWER.
2347  */
2348 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2349
2350 struct mwl8k_cmd_tx_power {
2351         struct mwl8k_cmd_pkt header;
2352         __le16 action;
2353         __le16 band;
2354         __le16 channel;
2355         __le16 bw;
2356         __le16 sub_ch;
2357         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2358 } __attribute__((packed));
2359
2360 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2361                                      struct ieee80211_conf *conf,
2362                                      unsigned short pwr)
2363 {
2364         struct ieee80211_channel *channel = conf->channel;
2365         struct mwl8k_cmd_tx_power *cmd;
2366         int rc;
2367         int i;
2368
2369         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2370         if (cmd == NULL)
2371                 return -ENOMEM;
2372
2373         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2374         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2375         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2376
2377         if (channel->band == IEEE80211_BAND_2GHZ)
2378                 cmd->band = cpu_to_le16(0x1);
2379         else if (channel->band == IEEE80211_BAND_5GHZ)
2380                 cmd->band = cpu_to_le16(0x4);
2381
2382         cmd->channel = channel->hw_value;
2383
2384         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2385             conf->channel_type == NL80211_CHAN_HT20) {
2386                 cmd->bw = cpu_to_le16(0x2);
2387         } else {
2388                 cmd->bw = cpu_to_le16(0x4);
2389                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2390                         cmd->sub_ch = cpu_to_le16(0x3);
2391                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2392                         cmd->sub_ch = cpu_to_le16(0x1);
2393         }
2394
2395         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2396                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2397
2398         rc = mwl8k_post_cmd(hw, &cmd->header);
2399         kfree(cmd);
2400
2401         return rc;
2402 }
2403
2404 /*
2405  * CMD_RF_ANTENNA.
2406  */
2407 struct mwl8k_cmd_rf_antenna {
2408         struct mwl8k_cmd_pkt header;
2409         __le16 antenna;
2410         __le16 mode;
2411 } __packed;
2412
2413 #define MWL8K_RF_ANTENNA_RX             1
2414 #define MWL8K_RF_ANTENNA_TX             2
2415
2416 static int
2417 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2418 {
2419         struct mwl8k_cmd_rf_antenna *cmd;
2420         int rc;
2421
2422         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2423         if (cmd == NULL)
2424                 return -ENOMEM;
2425
2426         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2427         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2428         cmd->antenna = cpu_to_le16(antenna);
2429         cmd->mode = cpu_to_le16(mask);
2430
2431         rc = mwl8k_post_cmd(hw, &cmd->header);
2432         kfree(cmd);
2433
2434         return rc;
2435 }
2436
2437 /*
2438  * CMD_SET_BEACON.
2439  */
2440 struct mwl8k_cmd_set_beacon {
2441         struct mwl8k_cmd_pkt header;
2442         __le16 beacon_len;
2443         __u8 beacon[0];
2444 };
2445
2446 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2447                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2448 {
2449         struct mwl8k_cmd_set_beacon *cmd;
2450         int rc;
2451
2452         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2453         if (cmd == NULL)
2454                 return -ENOMEM;
2455
2456         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2457         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2458         cmd->beacon_len = cpu_to_le16(len);
2459         memcpy(cmd->beacon, beacon, len);
2460
2461         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2462         kfree(cmd);
2463
2464         return rc;
2465 }
2466
2467 /*
2468  * CMD_SET_PRE_SCAN.
2469  */
2470 struct mwl8k_cmd_set_pre_scan {
2471         struct mwl8k_cmd_pkt header;
2472 } __packed;
2473
2474 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2475 {
2476         struct mwl8k_cmd_set_pre_scan *cmd;
2477         int rc;
2478
2479         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2480         if (cmd == NULL)
2481                 return -ENOMEM;
2482
2483         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2484         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2485
2486         rc = mwl8k_post_cmd(hw, &cmd->header);
2487         kfree(cmd);
2488
2489         return rc;
2490 }
2491
2492 /*
2493  * CMD_SET_POST_SCAN.
2494  */
2495 struct mwl8k_cmd_set_post_scan {
2496         struct mwl8k_cmd_pkt header;
2497         __le32 isibss;
2498         __u8 bssid[ETH_ALEN];
2499 } __packed;
2500
2501 static int
2502 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2503 {
2504         struct mwl8k_cmd_set_post_scan *cmd;
2505         int rc;
2506
2507         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2508         if (cmd == NULL)
2509                 return -ENOMEM;
2510
2511         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2512         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2513         cmd->isibss = 0;
2514         memcpy(cmd->bssid, mac, ETH_ALEN);
2515
2516         rc = mwl8k_post_cmd(hw, &cmd->header);
2517         kfree(cmd);
2518
2519         return rc;
2520 }
2521
2522 /*
2523  * CMD_SET_RF_CHANNEL.
2524  */
2525 struct mwl8k_cmd_set_rf_channel {
2526         struct mwl8k_cmd_pkt header;
2527         __le16 action;
2528         __u8 current_channel;
2529         __le32 channel_flags;
2530 } __packed;
2531
2532 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2533                                     struct ieee80211_conf *conf)
2534 {
2535         struct ieee80211_channel *channel = conf->channel;
2536         struct mwl8k_cmd_set_rf_channel *cmd;
2537         int rc;
2538
2539         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2540         if (cmd == NULL)
2541                 return -ENOMEM;
2542
2543         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2544         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2545         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2546         cmd->current_channel = channel->hw_value;
2547
2548         if (channel->band == IEEE80211_BAND_2GHZ)
2549                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2550         else if (channel->band == IEEE80211_BAND_5GHZ)
2551                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2552
2553         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2554             conf->channel_type == NL80211_CHAN_HT20)
2555                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2556         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2557                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2558         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2559                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2560
2561         rc = mwl8k_post_cmd(hw, &cmd->header);
2562         kfree(cmd);
2563
2564         return rc;
2565 }
2566
2567 /*
2568  * CMD_SET_AID.
2569  */
2570 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2571 #define MWL8K_FRAME_PROT_11G                            0x07
2572 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2573 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2574
2575 struct mwl8k_cmd_update_set_aid {
2576         struct  mwl8k_cmd_pkt header;
2577         __le16  aid;
2578
2579          /* AP's MAC address (BSSID) */
2580         __u8    bssid[ETH_ALEN];
2581         __le16  protection_mode;
2582         __u8    supp_rates[14];
2583 } __packed;
2584
2585 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2586 {
2587         int i;
2588         int j;
2589
2590         /*
2591          * Clear nonstandard rates 4 and 13.
2592          */
2593         mask &= 0x1fef;
2594
2595         for (i = 0, j = 0; i < 14; i++) {
2596                 if (mask & (1 << i))
2597                         rates[j++] = mwl8k_rates_24[i].hw_value;
2598         }
2599 }
2600
2601 static int
2602 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2603                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2604 {
2605         struct mwl8k_cmd_update_set_aid *cmd;
2606         u16 prot_mode;
2607         int rc;
2608
2609         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2610         if (cmd == NULL)
2611                 return -ENOMEM;
2612
2613         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2614         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2615         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2616         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2617
2618         if (vif->bss_conf.use_cts_prot) {
2619                 prot_mode = MWL8K_FRAME_PROT_11G;
2620         } else {
2621                 switch (vif->bss_conf.ht_operation_mode &
2622                         IEEE80211_HT_OP_MODE_PROTECTION) {
2623                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2624                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2625                         break;
2626                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2627                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2628                         break;
2629                 default:
2630                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2631                         break;
2632                 }
2633         }
2634         cmd->protection_mode = cpu_to_le16(prot_mode);
2635
2636         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2637
2638         rc = mwl8k_post_cmd(hw, &cmd->header);
2639         kfree(cmd);
2640
2641         return rc;
2642 }
2643
2644 /*
2645  * CMD_SET_RATE.
2646  */
2647 struct mwl8k_cmd_set_rate {
2648         struct  mwl8k_cmd_pkt header;
2649         __u8    legacy_rates[14];
2650
2651         /* Bitmap for supported MCS codes.  */
2652         __u8    mcs_set[16];
2653         __u8    reserved[16];
2654 } __packed;
2655
2656 static int
2657 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2658                    u32 legacy_rate_mask, u8 *mcs_rates)
2659 {
2660         struct mwl8k_cmd_set_rate *cmd;
2661         int rc;
2662
2663         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2664         if (cmd == NULL)
2665                 return -ENOMEM;
2666
2667         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2668         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2669         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2670         memcpy(cmd->mcs_set, mcs_rates, 16);
2671
2672         rc = mwl8k_post_cmd(hw, &cmd->header);
2673         kfree(cmd);
2674
2675         return rc;
2676 }
2677
2678 /*
2679  * CMD_FINALIZE_JOIN.
2680  */
2681 #define MWL8K_FJ_BEACON_MAXLEN  128
2682
2683 struct mwl8k_cmd_finalize_join {
2684         struct mwl8k_cmd_pkt header;
2685         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2686         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2687 } __packed;
2688
2689 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2690                                    int framelen, int dtim)
2691 {
2692         struct mwl8k_cmd_finalize_join *cmd;
2693         struct ieee80211_mgmt *payload = frame;
2694         int payload_len;
2695         int rc;
2696
2697         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2698         if (cmd == NULL)
2699                 return -ENOMEM;
2700
2701         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2702         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2703         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2704
2705         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2706         if (payload_len < 0)
2707                 payload_len = 0;
2708         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2709                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2710
2711         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2712
2713         rc = mwl8k_post_cmd(hw, &cmd->header);
2714         kfree(cmd);
2715
2716         return rc;
2717 }
2718
2719 /*
2720  * CMD_SET_RTS_THRESHOLD.
2721  */
2722 struct mwl8k_cmd_set_rts_threshold {
2723         struct mwl8k_cmd_pkt header;
2724         __le16 action;
2725         __le16 threshold;
2726 } __packed;
2727
2728 static int
2729 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2730 {
2731         struct mwl8k_cmd_set_rts_threshold *cmd;
2732         int rc;
2733
2734         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2735         if (cmd == NULL)
2736                 return -ENOMEM;
2737
2738         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2739         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2740         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2741         cmd->threshold = cpu_to_le16(rts_thresh);
2742
2743         rc = mwl8k_post_cmd(hw, &cmd->header);
2744         kfree(cmd);
2745
2746         return rc;
2747 }
2748
2749 /*
2750  * CMD_SET_SLOT.
2751  */
2752 struct mwl8k_cmd_set_slot {
2753         struct mwl8k_cmd_pkt header;
2754         __le16 action;
2755         __u8 short_slot;
2756 } __packed;
2757
2758 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2759 {
2760         struct mwl8k_cmd_set_slot *cmd;
2761         int rc;
2762
2763         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2764         if (cmd == NULL)
2765                 return -ENOMEM;
2766
2767         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2768         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2769         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2770         cmd->short_slot = short_slot_time;
2771
2772         rc = mwl8k_post_cmd(hw, &cmd->header);
2773         kfree(cmd);
2774
2775         return rc;
2776 }
2777
2778 /*
2779  * CMD_SET_EDCA_PARAMS.
2780  */
2781 struct mwl8k_cmd_set_edca_params {
2782         struct mwl8k_cmd_pkt header;
2783
2784         /* See MWL8K_SET_EDCA_XXX below */
2785         __le16 action;
2786
2787         /* TX opportunity in units of 32 us */
2788         __le16 txop;
2789
2790         union {
2791                 struct {
2792                         /* Log exponent of max contention period: 0...15 */
2793                         __le32 log_cw_max;
2794
2795                         /* Log exponent of min contention period: 0...15 */
2796                         __le32 log_cw_min;
2797
2798                         /* Adaptive interframe spacing in units of 32us */
2799                         __u8 aifs;
2800
2801                         /* TX queue to configure */
2802                         __u8 txq;
2803                 } ap;
2804                 struct {
2805                         /* Log exponent of max contention period: 0...15 */
2806                         __u8 log_cw_max;
2807
2808                         /* Log exponent of min contention period: 0...15 */
2809                         __u8 log_cw_min;
2810
2811                         /* Adaptive interframe spacing in units of 32us */
2812                         __u8 aifs;
2813
2814                         /* TX queue to configure */
2815                         __u8 txq;
2816                 } sta;
2817         };
2818 } __packed;
2819
2820 #define MWL8K_SET_EDCA_CW       0x01
2821 #define MWL8K_SET_EDCA_TXOP     0x02
2822 #define MWL8K_SET_EDCA_AIFS     0x04
2823
2824 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2825                                  MWL8K_SET_EDCA_TXOP | \
2826                                  MWL8K_SET_EDCA_AIFS)
2827
2828 static int
2829 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2830                           __u16 cw_min, __u16 cw_max,
2831                           __u8 aifs, __u16 txop)
2832 {
2833         struct mwl8k_priv *priv = hw->priv;
2834         struct mwl8k_cmd_set_edca_params *cmd;
2835         int rc;
2836
2837         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2838         if (cmd == NULL)
2839                 return -ENOMEM;
2840
2841         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2842         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2843         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2844         cmd->txop = cpu_to_le16(txop);
2845         if (priv->ap_fw) {
2846                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2847                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2848                 cmd->ap.aifs = aifs;
2849                 cmd->ap.txq = qnum;
2850         } else {
2851                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2852                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2853                 cmd->sta.aifs = aifs;
2854                 cmd->sta.txq = qnum;
2855         }
2856
2857         rc = mwl8k_post_cmd(hw, &cmd->header);
2858         kfree(cmd);
2859
2860         return rc;
2861 }
2862
2863 /*
2864  * CMD_SET_WMM_MODE.
2865  */
2866 struct mwl8k_cmd_set_wmm_mode {
2867         struct mwl8k_cmd_pkt header;
2868         __le16 action;
2869 } __packed;
2870
2871 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2872 {
2873         struct mwl8k_priv *priv = hw->priv;
2874         struct mwl8k_cmd_set_wmm_mode *cmd;
2875         int rc;
2876
2877         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2878         if (cmd == NULL)
2879                 return -ENOMEM;
2880
2881         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2882         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2883         cmd->action = cpu_to_le16(!!enable);
2884
2885         rc = mwl8k_post_cmd(hw, &cmd->header);
2886         kfree(cmd);
2887
2888         if (!rc)
2889                 priv->wmm_enabled = enable;
2890
2891         return rc;
2892 }
2893
2894 /*
2895  * CMD_MIMO_CONFIG.
2896  */
2897 struct mwl8k_cmd_mimo_config {
2898         struct mwl8k_cmd_pkt header;
2899         __le32 action;
2900         __u8 rx_antenna_map;
2901         __u8 tx_antenna_map;
2902 } __packed;
2903
2904 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2905 {
2906         struct mwl8k_cmd_mimo_config *cmd;
2907         int rc;
2908
2909         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2910         if (cmd == NULL)
2911                 return -ENOMEM;
2912
2913         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2914         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2915         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2916         cmd->rx_antenna_map = rx;
2917         cmd->tx_antenna_map = tx;
2918
2919         rc = mwl8k_post_cmd(hw, &cmd->header);
2920         kfree(cmd);
2921
2922         return rc;
2923 }
2924
2925 /*
2926  * CMD_USE_FIXED_RATE (STA version).
2927  */
2928 struct mwl8k_cmd_use_fixed_rate_sta {
2929         struct mwl8k_cmd_pkt header;
2930         __le32 action;
2931         __le32 allow_rate_drop;
2932         __le32 num_rates;
2933         struct {
2934                 __le32 is_ht_rate;
2935                 __le32 enable_retry;
2936                 __le32 rate;
2937                 __le32 retry_count;
2938         } rate_entry[8];
2939         __le32 rate_type;
2940         __le32 reserved1;
2941         __le32 reserved2;
2942 } __packed;
2943
2944 #define MWL8K_USE_AUTO_RATE     0x0002
2945 #define MWL8K_UCAST_RATE        0
2946
2947 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2948 {
2949         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2950         int rc;
2951
2952         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2953         if (cmd == NULL)
2954                 return -ENOMEM;
2955
2956         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2957         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2958         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2959         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2960
2961         rc = mwl8k_post_cmd(hw, &cmd->header);
2962         kfree(cmd);
2963
2964         return rc;
2965 }
2966
2967 /*
2968  * CMD_USE_FIXED_RATE (AP version).
2969  */
2970 struct mwl8k_cmd_use_fixed_rate_ap {
2971         struct mwl8k_cmd_pkt header;
2972         __le32 action;
2973         __le32 allow_rate_drop;
2974         __le32 num_rates;
2975         struct mwl8k_rate_entry_ap {
2976                 __le32 is_ht_rate;
2977                 __le32 enable_retry;
2978                 __le32 rate;
2979                 __le32 retry_count;
2980         } rate_entry[4];
2981         u8 multicast_rate;
2982         u8 multicast_rate_type;
2983         u8 management_rate;
2984 } __packed;
2985
2986 static int
2987 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2988 {
2989         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2990         int rc;
2991
2992         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2993         if (cmd == NULL)
2994                 return -ENOMEM;
2995
2996         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2997         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2998         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2999         cmd->multicast_rate = mcast;
3000         cmd->management_rate = mgmt;
3001
3002         rc = mwl8k_post_cmd(hw, &cmd->header);
3003         kfree(cmd);
3004
3005         return rc;
3006 }
3007
3008 /*
3009  * CMD_ENABLE_SNIFFER.
3010  */
3011 struct mwl8k_cmd_enable_sniffer {
3012         struct mwl8k_cmd_pkt header;
3013         __le32 action;
3014 } __packed;
3015
3016 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3017 {
3018         struct mwl8k_cmd_enable_sniffer *cmd;
3019         int rc;
3020
3021         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3022         if (cmd == NULL)
3023                 return -ENOMEM;
3024
3025         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3026         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3027         cmd->action = cpu_to_le32(!!enable);
3028
3029         rc = mwl8k_post_cmd(hw, &cmd->header);
3030         kfree(cmd);
3031
3032         return rc;
3033 }
3034
3035 /*
3036  * CMD_SET_MAC_ADDR.
3037  */
3038 struct mwl8k_cmd_set_mac_addr {
3039         struct mwl8k_cmd_pkt header;
3040         union {
3041                 struct {
3042                         __le16 mac_type;
3043                         __u8 mac_addr[ETH_ALEN];
3044                 } mbss;
3045                 __u8 mac_addr[ETH_ALEN];
3046         };
3047 } __packed;
3048
3049 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3050 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3051 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3052 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3053
3054 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3055                                   struct ieee80211_vif *vif, u8 *mac)
3056 {
3057         struct mwl8k_priv *priv = hw->priv;
3058         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3059         struct mwl8k_cmd_set_mac_addr *cmd;
3060         int mac_type;
3061         int rc;
3062
3063         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3064         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3065                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3066                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3067                 else
3068                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3069         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3070                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3071                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3072                 else
3073                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3074         }
3075
3076         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3077         if (cmd == NULL)
3078                 return -ENOMEM;
3079
3080         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3081         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3082         if (priv->ap_fw) {
3083                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3084                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3085         } else {
3086                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3087         }
3088
3089         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3090         kfree(cmd);
3091
3092         return rc;
3093 }
3094
3095 /*
3096  * CMD_SET_RATEADAPT_MODE.
3097  */
3098 struct mwl8k_cmd_set_rate_adapt_mode {
3099         struct mwl8k_cmd_pkt header;
3100         __le16 action;
3101         __le16 mode;
3102 } __packed;
3103
3104 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3105 {
3106         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3107         int rc;
3108
3109         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3110         if (cmd == NULL)
3111                 return -ENOMEM;
3112
3113         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3114         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3115         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3116         cmd->mode = cpu_to_le16(mode);
3117
3118         rc = mwl8k_post_cmd(hw, &cmd->header);
3119         kfree(cmd);
3120
3121         return rc;
3122 }
3123
3124 /*
3125  * CMD_BSS_START.
3126  */
3127 struct mwl8k_cmd_bss_start {
3128         struct mwl8k_cmd_pkt header;
3129         __le32 enable;
3130 } __packed;
3131
3132 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3133                                struct ieee80211_vif *vif, int enable)
3134 {
3135         struct mwl8k_cmd_bss_start *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_BSS_START);
3143         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3144         cmd->enable = cpu_to_le32(enable);
3145
3146         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3147         kfree(cmd);
3148
3149         return rc;
3150 }
3151
3152 /*
3153  * CMD_SET_NEW_STN.
3154  */
3155 struct mwl8k_cmd_set_new_stn {
3156         struct mwl8k_cmd_pkt header;
3157         __le16 aid;
3158         __u8 mac_addr[6];
3159         __le16 stn_id;
3160         __le16 action;
3161         __le16 rsvd;
3162         __le32 legacy_rates;
3163         __u8 ht_rates[4];
3164         __le16 cap_info;
3165         __le16 ht_capabilities_info;
3166         __u8 mac_ht_param_info;
3167         __u8 rev;
3168         __u8 control_channel;
3169         __u8 add_channel;
3170         __le16 op_mode;
3171         __le16 stbc;
3172         __u8 add_qos_info;
3173         __u8 is_qos_sta;
3174         __le32 fw_sta_ptr;
3175 } __packed;
3176
3177 #define MWL8K_STA_ACTION_ADD            0
3178 #define MWL8K_STA_ACTION_REMOVE         2
3179
3180 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3181                                      struct ieee80211_vif *vif,
3182                                      struct ieee80211_sta *sta)
3183 {
3184         struct mwl8k_cmd_set_new_stn *cmd;
3185         u32 rates;
3186         int rc;
3187
3188         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3189         if (cmd == NULL)
3190                 return -ENOMEM;
3191
3192         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3193         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3194         cmd->aid = cpu_to_le16(sta->aid);
3195         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3196         cmd->stn_id = cpu_to_le16(sta->aid);
3197         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3198         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3199                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3200         else
3201                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3202         cmd->legacy_rates = cpu_to_le32(rates);
3203         if (sta->ht_cap.ht_supported) {
3204                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3205                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3206                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3207                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3208                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3209                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3210                         ((sta->ht_cap.ampdu_density & 7) << 2);
3211                 cmd->is_qos_sta = 1;
3212         }
3213
3214         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3215         kfree(cmd);
3216
3217         return rc;
3218 }
3219
3220 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3221                                           struct ieee80211_vif *vif)
3222 {
3223         struct mwl8k_cmd_set_new_stn *cmd;
3224         int rc;
3225
3226         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3227         if (cmd == NULL)
3228                 return -ENOMEM;
3229
3230         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3231         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3232         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3233
3234         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3235         kfree(cmd);
3236
3237         return rc;
3238 }
3239
3240 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3241                                      struct ieee80211_vif *vif, u8 *addr)
3242 {
3243         struct mwl8k_cmd_set_new_stn *cmd;
3244         int rc;
3245
3246         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3247         if (cmd == NULL)
3248                 return -ENOMEM;
3249
3250         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3251         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3252         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3253         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3254
3255         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3256         kfree(cmd);
3257
3258         return rc;
3259 }
3260
3261 /*
3262  * CMD_UPDATE_ENCRYPTION.
3263  */
3264
3265 #define MAX_ENCR_KEY_LENGTH     16
3266 #define MIC_KEY_LENGTH          8
3267
3268 struct mwl8k_cmd_update_encryption {
3269         struct mwl8k_cmd_pkt header;
3270
3271         __le32 action;
3272         __le32 reserved;
3273         __u8 mac_addr[6];
3274         __u8 encr_type;
3275
3276 } __attribute__((packed));
3277
3278 struct mwl8k_cmd_set_key {
3279         struct mwl8k_cmd_pkt header;
3280
3281         __le32 action;
3282         __le32 reserved;
3283         __le16 length;
3284         __le16 key_type_id;
3285         __le32 key_info;
3286         __le32 key_id;
3287         __le16 key_len;
3288         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3289         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3290         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3291         __le16 tkip_rsc_low;
3292         __le32 tkip_rsc_high;
3293         __le16 tkip_tsc_low;
3294         __le32 tkip_tsc_high;
3295         __u8 mac_addr[6];
3296 } __attribute__((packed));
3297
3298 enum {
3299         MWL8K_ENCR_ENABLE,
3300         MWL8K_ENCR_SET_KEY,
3301         MWL8K_ENCR_REMOVE_KEY,
3302         MWL8K_ENCR_SET_GROUP_KEY,
3303 };
3304
3305 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3306 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3307 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3308 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3309 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3310
3311 enum {
3312         MWL8K_ALG_WEP,
3313         MWL8K_ALG_TKIP,
3314         MWL8K_ALG_CCMP,
3315 };
3316
3317 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3318 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3319 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3320 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3321 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3322
3323 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3324                                               struct ieee80211_vif *vif,
3325                                               u8 *addr,
3326                                               u8 encr_type)
3327 {
3328         struct mwl8k_cmd_update_encryption *cmd;
3329         int rc;
3330
3331         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3332         if (cmd == NULL)
3333                 return -ENOMEM;
3334
3335         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3336         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3337         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3338         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3339         cmd->encr_type = encr_type;
3340
3341         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3342         kfree(cmd);
3343
3344         return rc;
3345 }
3346
3347 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3348                                                 u8 *addr,
3349                                                 struct ieee80211_key_conf *key)
3350 {
3351         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3352         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3353         cmd->length = cpu_to_le16(sizeof(*cmd) -
3354                                 offsetof(struct mwl8k_cmd_set_key, length));
3355         cmd->key_id = cpu_to_le32(key->keyidx);
3356         cmd->key_len = cpu_to_le16(key->keylen);
3357         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3358
3359         switch (key->cipher) {
3360         case WLAN_CIPHER_SUITE_WEP40:
3361         case WLAN_CIPHER_SUITE_WEP104:
3362                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3363                 if (key->keyidx == 0)
3364                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3365
3366                 break;
3367         case WLAN_CIPHER_SUITE_TKIP:
3368                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3369                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3370                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3371                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3372                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3373                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3374                 break;
3375         case WLAN_CIPHER_SUITE_CCMP:
3376                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3377                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3378                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3379                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3380                 break;
3381         default:
3382                 return -ENOTSUPP;
3383         }
3384
3385         return 0;
3386 }
3387
3388 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3389                                                 struct ieee80211_vif *vif,
3390                                                 u8 *addr,
3391                                                 struct ieee80211_key_conf *key)
3392 {
3393         struct mwl8k_cmd_set_key *cmd;
3394         int rc;
3395         int keymlen;
3396         u32 action;
3397         u8 idx;
3398         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3399
3400         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3401         if (cmd == NULL)
3402                 return -ENOMEM;
3403
3404         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3405         if (rc < 0)
3406                 goto done;
3407
3408         idx = key->keyidx;
3409
3410         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3411                 action = MWL8K_ENCR_SET_KEY;
3412         else
3413                 action = MWL8K_ENCR_SET_GROUP_KEY;
3414
3415         switch (key->cipher) {
3416         case WLAN_CIPHER_SUITE_WEP40:
3417         case WLAN_CIPHER_SUITE_WEP104:
3418                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3419                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3420                                                 sizeof(*key) + key->keylen);
3421                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
3422                 }
3423
3424                 keymlen = 0;
3425                 action = MWL8K_ENCR_SET_KEY;
3426                 break;
3427         case WLAN_CIPHER_SUITE_TKIP:
3428                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3429                 break;
3430         case WLAN_CIPHER_SUITE_CCMP:
3431                 keymlen = key->keylen;
3432                 break;
3433         default:
3434                 rc = -ENOTSUPP;
3435                 goto done;
3436         }
3437
3438         memcpy(cmd->key_material, key->key, keymlen);
3439         cmd->action = cpu_to_le32(action);
3440
3441         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3442 done:
3443         kfree(cmd);
3444
3445         return rc;
3446 }
3447
3448 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3449                                                 struct ieee80211_vif *vif,
3450                                                 u8 *addr,
3451                                                 struct ieee80211_key_conf *key)
3452 {
3453         struct mwl8k_cmd_set_key *cmd;
3454         int rc;
3455         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3456
3457         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3458         if (cmd == NULL)
3459                 return -ENOMEM;
3460
3461         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3462         if (rc < 0)
3463                 goto done;
3464
3465         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3466                         WLAN_CIPHER_SUITE_WEP104)
3467                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3468
3469         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3470
3471         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3472 done:
3473         kfree(cmd);
3474
3475         return rc;
3476 }
3477
3478 static int mwl8k_set_key(struct ieee80211_hw *hw,
3479                          enum set_key_cmd cmd_param,
3480                          struct ieee80211_vif *vif,
3481                          struct ieee80211_sta *sta,
3482                          struct ieee80211_key_conf *key)
3483 {
3484         int rc = 0;
3485         u8 encr_type;
3486         u8 *addr;
3487         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3488
3489         if (vif->type == NL80211_IFTYPE_STATION)
3490                 return -EOPNOTSUPP;
3491
3492         if (sta == NULL)
3493                 addr = hw->wiphy->perm_addr;
3494         else
3495                 addr = sta->addr;
3496
3497         if (cmd_param == SET_KEY) {
3498                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3499                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
3500                 if (rc)
3501                         goto out;
3502
3503                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
3504                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
3505                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
3506                 else
3507                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
3508
3509                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
3510                                                                 encr_type);
3511                 if (rc)
3512                         goto out;
3513
3514                 mwl8k_vif->is_hw_crypto_enabled = true;
3515
3516         } else {
3517                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
3518
3519                 if (rc)
3520                         goto out;
3521
3522                 mwl8k_vif->is_hw_crypto_enabled = false;
3523
3524         }
3525 out:
3526         return rc;
3527 }
3528
3529 /*
3530  * CMD_UPDATE_STADB.
3531  */
3532 struct ewc_ht_info {
3533         __le16  control1;
3534         __le16  control2;
3535         __le16  control3;
3536 } __packed;
3537
3538 struct peer_capability_info {
3539         /* Peer type - AP vs. STA.  */
3540         __u8    peer_type;
3541
3542         /* Basic 802.11 capabilities from assoc resp.  */
3543         __le16  basic_caps;
3544
3545         /* Set if peer supports 802.11n high throughput (HT).  */
3546         __u8    ht_support;
3547
3548         /* Valid if HT is supported.  */
3549         __le16  ht_caps;
3550         __u8    extended_ht_caps;
3551         struct ewc_ht_info      ewc_info;
3552
3553         /* Legacy rate table. Intersection of our rates and peer rates.  */
3554         __u8    legacy_rates[12];
3555
3556         /* HT rate table. Intersection of our rates and peer rates.  */
3557         __u8    ht_rates[16];
3558         __u8    pad[16];
3559
3560         /* If set, interoperability mode, no proprietary extensions.  */
3561         __u8    interop;
3562         __u8    pad2;
3563         __u8    station_id;
3564         __le16  amsdu_enabled;
3565 } __packed;
3566
3567 struct mwl8k_cmd_update_stadb {
3568         struct mwl8k_cmd_pkt header;
3569
3570         /* See STADB_ACTION_TYPE */
3571         __le32  action;
3572
3573         /* Peer MAC address */
3574         __u8    peer_addr[ETH_ALEN];
3575
3576         __le32  reserved;
3577
3578         /* Peer info - valid during add/update.  */
3579         struct peer_capability_info     peer_info;
3580 } __packed;
3581
3582 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3583 #define MWL8K_STA_DB_DEL_ENTRY          2
3584
3585 /* Peer Entry flags - used to define the type of the peer node */
3586 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3587
3588 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3589                                       struct ieee80211_vif *vif,
3590                                       struct ieee80211_sta *sta)
3591 {
3592         struct mwl8k_cmd_update_stadb *cmd;
3593         struct peer_capability_info *p;
3594         u32 rates;
3595         int rc;
3596
3597         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3598         if (cmd == NULL)
3599                 return -ENOMEM;
3600
3601         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3602         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3603         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3604         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3605
3606         p = &cmd->peer_info;
3607         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3608         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3609         p->ht_support = sta->ht_cap.ht_supported;
3610         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3611         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3612                 ((sta->ht_cap.ampdu_density & 7) << 2);
3613         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3614                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3615         else
3616                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3617         legacy_rate_mask_to_array(p->legacy_rates, rates);
3618         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3619         p->interop = 1;
3620         p->amsdu_enabled = 0;
3621
3622         rc = mwl8k_post_cmd(hw, &cmd->header);
3623         kfree(cmd);
3624
3625         return rc ? rc : p->station_id;
3626 }
3627
3628 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3629                                       struct ieee80211_vif *vif, u8 *addr)
3630 {
3631         struct mwl8k_cmd_update_stadb *cmd;
3632         int rc;
3633
3634         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3635         if (cmd == NULL)
3636                 return -ENOMEM;
3637
3638         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3639         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3640         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3641         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3642
3643         rc = mwl8k_post_cmd(hw, &cmd->header);
3644         kfree(cmd);
3645
3646         return rc;
3647 }
3648
3649
3650 /*
3651  * Interrupt handling.
3652  */
3653 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3654 {
3655         struct ieee80211_hw *hw = dev_id;
3656         struct mwl8k_priv *priv = hw->priv;
3657         u32 status;
3658
3659         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3660         if (!status)
3661                 return IRQ_NONE;
3662
3663         if (status & MWL8K_A2H_INT_TX_DONE) {
3664                 status &= ~MWL8K_A2H_INT_TX_DONE;
3665                 tasklet_schedule(&priv->poll_tx_task);
3666         }
3667
3668         if (status & MWL8K_A2H_INT_RX_READY) {
3669                 status &= ~MWL8K_A2H_INT_RX_READY;
3670                 tasklet_schedule(&priv->poll_rx_task);
3671         }
3672
3673         if (status)
3674                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3675
3676         if (status & MWL8K_A2H_INT_OPC_DONE) {
3677                 if (priv->hostcmd_wait != NULL)
3678                         complete(priv->hostcmd_wait);
3679         }
3680
3681         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3682                 if (!mutex_is_locked(&priv->fw_mutex) &&
3683                     priv->radio_on && priv->pending_tx_pkts)
3684                         mwl8k_tx_start(priv);
3685         }
3686
3687         return IRQ_HANDLED;
3688 }
3689
3690 static void mwl8k_tx_poll(unsigned long data)
3691 {
3692         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3693         struct mwl8k_priv *priv = hw->priv;
3694         int limit;
3695         int i;
3696
3697         limit = 32;
3698
3699         spin_lock_bh(&priv->tx_lock);
3700
3701         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3702                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3703
3704         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3705                 complete(priv->tx_wait);
3706                 priv->tx_wait = NULL;
3707         }
3708
3709         spin_unlock_bh(&priv->tx_lock);
3710
3711         if (limit) {
3712                 writel(~MWL8K_A2H_INT_TX_DONE,
3713                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3714         } else {
3715                 tasklet_schedule(&priv->poll_tx_task);
3716         }
3717 }
3718
3719 static void mwl8k_rx_poll(unsigned long data)
3720 {
3721         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3722         struct mwl8k_priv *priv = hw->priv;
3723         int limit;
3724
3725         limit = 32;
3726         limit -= rxq_process(hw, 0, limit);
3727         limit -= rxq_refill(hw, 0, limit);
3728
3729         if (limit) {
3730                 writel(~MWL8K_A2H_INT_RX_READY,
3731                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3732         } else {
3733                 tasklet_schedule(&priv->poll_rx_task);
3734         }
3735 }
3736
3737
3738 /*
3739  * Core driver operations.
3740  */
3741 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3742 {
3743         struct mwl8k_priv *priv = hw->priv;
3744         int index = skb_get_queue_mapping(skb);
3745
3746         if (!priv->radio_on) {
3747                 wiphy_debug(hw->wiphy,
3748                             "dropped TX frame since radio disabled\n");
3749                 dev_kfree_skb(skb);
3750                 return;
3751         }
3752
3753         mwl8k_txq_xmit(hw, index, skb);
3754 }
3755
3756 static int mwl8k_start(struct ieee80211_hw *hw)
3757 {
3758         struct mwl8k_priv *priv = hw->priv;
3759         int rc;
3760
3761         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3762                          IRQF_SHARED, MWL8K_NAME, hw);
3763         if (rc) {
3764                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3765                 return -EIO;
3766         }
3767
3768         /* Enable TX reclaim and RX tasklets.  */
3769         tasklet_enable(&priv->poll_tx_task);
3770         tasklet_enable(&priv->poll_rx_task);
3771
3772         /* Enable interrupts */
3773         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3774
3775         rc = mwl8k_fw_lock(hw);
3776         if (!rc) {
3777                 rc = mwl8k_cmd_radio_enable(hw);
3778
3779                 if (!priv->ap_fw) {
3780                         if (!rc)
3781                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3782
3783                         if (!rc)
3784                                 rc = mwl8k_cmd_set_pre_scan(hw);
3785
3786                         if (!rc)
3787                                 rc = mwl8k_cmd_set_post_scan(hw,
3788                                                 "\x00\x00\x00\x00\x00\x00");
3789                 }
3790
3791                 if (!rc)
3792                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3793
3794                 if (!rc)
3795                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3796
3797                 mwl8k_fw_unlock(hw);
3798         }
3799
3800         if (rc) {
3801                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3802                 free_irq(priv->pdev->irq, hw);
3803                 tasklet_disable(&priv->poll_tx_task);
3804                 tasklet_disable(&priv->poll_rx_task);
3805         }
3806
3807         return rc;
3808 }
3809
3810 static void mwl8k_stop(struct ieee80211_hw *hw)
3811 {
3812         struct mwl8k_priv *priv = hw->priv;
3813         int i;
3814
3815         mwl8k_cmd_radio_disable(hw);
3816
3817         ieee80211_stop_queues(hw);
3818
3819         /* Disable interrupts */
3820         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3821         free_irq(priv->pdev->irq, hw);
3822
3823         /* Stop finalize join worker */
3824         cancel_work_sync(&priv->finalize_join_worker);
3825         if (priv->beacon_skb != NULL)
3826                 dev_kfree_skb(priv->beacon_skb);
3827
3828         /* Stop TX reclaim and RX tasklets.  */
3829         tasklet_disable(&priv->poll_tx_task);
3830         tasklet_disable(&priv->poll_rx_task);
3831
3832         /* Return all skbs to mac80211 */
3833         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3834                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3835 }
3836
3837 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3838
3839 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3840                                struct ieee80211_vif *vif)
3841 {
3842         struct mwl8k_priv *priv = hw->priv;
3843         struct mwl8k_vif *mwl8k_vif;
3844         u32 macids_supported;
3845         int macid, rc;
3846         struct mwl8k_device_info *di;
3847
3848         /*
3849          * Reject interface creation if sniffer mode is active, as
3850          * STA operation is mutually exclusive with hardware sniffer
3851          * mode.  (Sniffer mode is only used on STA firmware.)
3852          */
3853         if (priv->sniffer_enabled) {
3854                 wiphy_info(hw->wiphy,
3855                            "unable to create STA interface because sniffer mode is enabled\n");
3856                 return -EINVAL;
3857         }
3858
3859         di = priv->device_info;
3860         switch (vif->type) {
3861         case NL80211_IFTYPE_AP:
3862                 if (!priv->ap_fw && di->fw_image_ap) {
3863                         /* we must load the ap fw to meet this request */
3864                         if (!list_empty(&priv->vif_list))
3865                                 return -EBUSY;
3866                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3867                         if (rc)
3868                                 return rc;
3869                 }
3870                 macids_supported = priv->ap_macids_supported;
3871                 break;
3872         case NL80211_IFTYPE_STATION:
3873                 if (priv->ap_fw && di->fw_image_sta) {
3874                         /* we must load the sta fw to meet this request */
3875                         if (!list_empty(&priv->vif_list))
3876                                 return -EBUSY;
3877                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3878                         if (rc)
3879                                 return rc;
3880                 }
3881                 macids_supported = priv->sta_macids_supported;
3882                 break;
3883         default:
3884                 return -EINVAL;
3885         }
3886
3887         macid = ffs(macids_supported & ~priv->macids_used);
3888         if (!macid--)
3889                 return -EBUSY;
3890
3891         /* Setup driver private area. */
3892         mwl8k_vif = MWL8K_VIF(vif);
3893         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3894         mwl8k_vif->vif = vif;
3895         mwl8k_vif->macid = macid;
3896         mwl8k_vif->seqno = 0;
3897         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
3898         mwl8k_vif->is_hw_crypto_enabled = false;
3899
3900         /* Set the mac address.  */
3901         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3902
3903         if (priv->ap_fw)
3904                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3905
3906         priv->macids_used |= 1 << mwl8k_vif->macid;
3907         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3908
3909         return 0;
3910 }
3911
3912 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3913                                    struct ieee80211_vif *vif)
3914 {
3915         struct mwl8k_priv *priv = hw->priv;
3916         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3917
3918         if (priv->ap_fw)
3919                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3920
3921         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3922
3923         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3924         list_del(&mwl8k_vif->list);
3925 }
3926
3927 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3928 {
3929         struct ieee80211_conf *conf = &hw->conf;
3930         struct mwl8k_priv *priv = hw->priv;
3931         int rc;
3932
3933         if (conf->flags & IEEE80211_CONF_IDLE) {
3934                 mwl8k_cmd_radio_disable(hw);
3935                 return 0;
3936         }
3937
3938         rc = mwl8k_fw_lock(hw);
3939         if (rc)
3940                 return rc;
3941
3942         rc = mwl8k_cmd_radio_enable(hw);
3943         if (rc)
3944                 goto out;
3945
3946         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3947         if (rc)
3948                 goto out;
3949
3950         if (conf->power_level > 18)
3951                 conf->power_level = 18;
3952
3953         if (priv->ap_fw) {
3954                 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3955                 if (rc)
3956                         goto out;
3957
3958                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
3959                 if (rc)
3960                         wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
3961                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3962                 if (rc)
3963                         wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
3964
3965         } else {
3966                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3967                 if (rc)
3968                         goto out;
3969                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3970         }
3971
3972 out:
3973         mwl8k_fw_unlock(hw);
3974
3975         return rc;
3976 }
3977
3978 static void
3979 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3980                            struct ieee80211_bss_conf *info, u32 changed)
3981 {
3982         struct mwl8k_priv *priv = hw->priv;
3983         u32 ap_legacy_rates;
3984         u8 ap_mcs_rates[16];
3985         int rc;
3986
3987         if (mwl8k_fw_lock(hw))
3988                 return;
3989
3990         /*
3991          * No need to capture a beacon if we're no longer associated.
3992          */
3993         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3994                 priv->capture_beacon = false;
3995
3996         /*
3997          * Get the AP's legacy and MCS rates.
3998          */
3999         if (vif->bss_conf.assoc) {
4000                 struct ieee80211_sta *ap;
4001
4002                 rcu_read_lock();
4003
4004                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4005                 if (ap == NULL) {
4006                         rcu_read_unlock();
4007                         goto out;
4008                 }
4009
4010                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4011                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4012                 } else {
4013                         ap_legacy_rates =
4014                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4015                 }
4016                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4017
4018                 rcu_read_unlock();
4019         }
4020
4021         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4022                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4023                 if (rc)
4024                         goto out;
4025
4026                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4027                 if (rc)
4028                         goto out;
4029         }
4030
4031         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4032                 rc = mwl8k_set_radio_preamble(hw,
4033                                 vif->bss_conf.use_short_preamble);
4034                 if (rc)
4035                         goto out;
4036         }
4037
4038         if (changed & BSS_CHANGED_ERP_SLOT) {
4039                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4040                 if (rc)
4041                         goto out;
4042         }
4043
4044         if (vif->bss_conf.assoc &&
4045             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4046                         BSS_CHANGED_HT))) {
4047                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4048                 if (rc)
4049                         goto out;
4050         }
4051
4052         if (vif->bss_conf.assoc &&
4053             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4054                 /*
4055                  * Finalize the join.  Tell rx handler to process
4056                  * next beacon from our BSSID.
4057                  */
4058                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4059                 priv->capture_beacon = true;
4060         }
4061
4062 out:
4063         mwl8k_fw_unlock(hw);
4064 }
4065
4066 static void
4067 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4068                           struct ieee80211_bss_conf *info, u32 changed)
4069 {
4070         int rc;
4071
4072         if (mwl8k_fw_lock(hw))
4073                 return;
4074
4075         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4076                 rc = mwl8k_set_radio_preamble(hw,
4077                                 vif->bss_conf.use_short_preamble);
4078                 if (rc)
4079                         goto out;
4080         }
4081
4082         if (changed & BSS_CHANGED_BASIC_RATES) {
4083                 int idx;
4084                 int rate;
4085
4086                 /*
4087                  * Use lowest supported basic rate for multicasts
4088                  * and management frames (such as probe responses --
4089                  * beacons will always go out at 1 Mb/s).
4090                  */
4091                 idx = ffs(vif->bss_conf.basic_rates);
4092                 if (idx)
4093                         idx--;
4094
4095                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4096                         rate = mwl8k_rates_24[idx].hw_value;
4097                 else
4098                         rate = mwl8k_rates_50[idx].hw_value;
4099
4100                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4101         }
4102
4103         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4104                 struct sk_buff *skb;
4105
4106                 skb = ieee80211_beacon_get(hw, vif);
4107                 if (skb != NULL) {
4108                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4109                         kfree_skb(skb);
4110                 }
4111         }
4112
4113         if (changed & BSS_CHANGED_BEACON_ENABLED)
4114                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4115
4116 out:
4117         mwl8k_fw_unlock(hw);
4118 }
4119
4120 static void
4121 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4122                        struct ieee80211_bss_conf *info, u32 changed)
4123 {
4124         struct mwl8k_priv *priv = hw->priv;
4125
4126         if (!priv->ap_fw)
4127                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4128         else
4129                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4130 }
4131
4132 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4133                                    struct netdev_hw_addr_list *mc_list)
4134 {
4135         struct mwl8k_cmd_pkt *cmd;
4136
4137         /*
4138          * Synthesize and return a command packet that programs the
4139          * hardware multicast address filter.  At this point we don't
4140          * know whether FIF_ALLMULTI is being requested, but if it is,
4141          * we'll end up throwing this packet away and creating a new
4142          * one in mwl8k_configure_filter().
4143          */
4144         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4145
4146         return (unsigned long)cmd;
4147 }
4148
4149 static int
4150 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4151                                unsigned int changed_flags,
4152                                unsigned int *total_flags)
4153 {
4154         struct mwl8k_priv *priv = hw->priv;
4155
4156         /*
4157          * Hardware sniffer mode is mutually exclusive with STA
4158          * operation, so refuse to enable sniffer mode if a STA
4159          * interface is active.
4160          */
4161         if (!list_empty(&priv->vif_list)) {
4162                 if (net_ratelimit())
4163                         wiphy_info(hw->wiphy,
4164                                    "not enabling sniffer mode because STA interface is active\n");
4165                 return 0;
4166         }
4167
4168         if (!priv->sniffer_enabled) {
4169                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4170                         return 0;
4171                 priv->sniffer_enabled = true;
4172         }
4173
4174         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4175                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4176                         FIF_OTHER_BSS;
4177
4178         return 1;
4179 }
4180
4181 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4182 {
4183         if (!list_empty(&priv->vif_list))
4184                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4185
4186         return NULL;
4187 }
4188
4189 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4190                                    unsigned int changed_flags,
4191                                    unsigned int *total_flags,
4192                                    u64 multicast)
4193 {
4194         struct mwl8k_priv *priv = hw->priv;
4195         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4196
4197         /*
4198          * AP firmware doesn't allow fine-grained control over
4199          * the receive filter.
4200          */
4201         if (priv->ap_fw) {
4202                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4203                 kfree(cmd);
4204                 return;
4205         }
4206
4207         /*
4208          * Enable hardware sniffer mode if FIF_CONTROL or
4209          * FIF_OTHER_BSS is requested.
4210          */
4211         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4212             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4213                 kfree(cmd);
4214                 return;
4215         }
4216
4217         /* Clear unsupported feature flags */
4218         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4219
4220         if (mwl8k_fw_lock(hw)) {
4221                 kfree(cmd);
4222                 return;
4223         }
4224
4225         if (priv->sniffer_enabled) {
4226                 mwl8k_cmd_enable_sniffer(hw, 0);
4227                 priv->sniffer_enabled = false;
4228         }
4229
4230         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4231                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4232                         /*
4233                          * Disable the BSS filter.
4234                          */
4235                         mwl8k_cmd_set_pre_scan(hw);
4236                 } else {
4237                         struct mwl8k_vif *mwl8k_vif;
4238                         const u8 *bssid;
4239
4240                         /*
4241                          * Enable the BSS filter.
4242                          *
4243                          * If there is an active STA interface, use that
4244                          * interface's BSSID, otherwise use a dummy one
4245                          * (where the OUI part needs to be nonzero for
4246                          * the BSSID to be accepted by POST_SCAN).
4247                          */
4248                         mwl8k_vif = mwl8k_first_vif(priv);
4249                         if (mwl8k_vif != NULL)
4250                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4251                         else
4252                                 bssid = "\x01\x00\x00\x00\x00\x00";
4253
4254                         mwl8k_cmd_set_post_scan(hw, bssid);
4255                 }
4256         }
4257
4258         /*
4259          * If FIF_ALLMULTI is being requested, throw away the command
4260          * packet that ->prepare_multicast() built and replace it with
4261          * a command packet that enables reception of all multicast
4262          * packets.
4263          */
4264         if (*total_flags & FIF_ALLMULTI) {
4265                 kfree(cmd);
4266                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4267         }
4268
4269         if (cmd != NULL) {
4270                 mwl8k_post_cmd(hw, cmd);
4271                 kfree(cmd);
4272         }
4273
4274         mwl8k_fw_unlock(hw);
4275 }
4276
4277 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4278 {
4279         return mwl8k_cmd_set_rts_threshold(hw, value);
4280 }
4281
4282 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4283                             struct ieee80211_vif *vif,
4284                             struct ieee80211_sta *sta)
4285 {
4286         struct mwl8k_priv *priv = hw->priv;
4287
4288         if (priv->ap_fw)
4289                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4290         else
4291                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4292 }
4293
4294 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4295                          struct ieee80211_vif *vif,
4296                          struct ieee80211_sta *sta)
4297 {
4298         struct mwl8k_priv *priv = hw->priv;
4299         int ret;
4300         int i;
4301         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4302         struct ieee80211_key_conf *key;
4303
4304         if (!priv->ap_fw) {
4305                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4306                 if (ret >= 0) {
4307                         MWL8K_STA(sta)->peer_id = ret;
4308                         ret = 0;
4309                 }
4310
4311         } else {
4312                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4313         }
4314
4315         for (i = 0; i < NUM_WEP_KEYS; i++) {
4316                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4317                 if (mwl8k_vif->wep_key_conf[i].enabled)
4318                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4319         }
4320         return ret;
4321 }
4322
4323 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4324                          const struct ieee80211_tx_queue_params *params)
4325 {
4326         struct mwl8k_priv *priv = hw->priv;
4327         int rc;
4328
4329         rc = mwl8k_fw_lock(hw);
4330         if (!rc) {
4331                 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
4332                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4333
4334                 if (!priv->wmm_enabled)
4335                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4336
4337                 if (!rc) {
4338                         int q = MWL8K_TX_QUEUES - 1 - queue;
4339                         rc = mwl8k_cmd_set_edca_params(hw, q,
4340                                                        params->cw_min,
4341                                                        params->cw_max,
4342                                                        params->aifs,
4343                                                        params->txop);
4344                 }
4345
4346                 mwl8k_fw_unlock(hw);
4347         }
4348
4349         return rc;
4350 }
4351
4352 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4353                            struct ieee80211_low_level_stats *stats)
4354 {
4355         return mwl8k_cmd_get_stat(hw, stats);
4356 }
4357
4358 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4359                                 struct survey_info *survey)
4360 {
4361         struct mwl8k_priv *priv = hw->priv;
4362         struct ieee80211_conf *conf = &hw->conf;
4363
4364         if (idx != 0)
4365                 return -ENOENT;
4366
4367         survey->channel = conf->channel;
4368         survey->filled = SURVEY_INFO_NOISE_DBM;
4369         survey->noise = priv->noise;
4370
4371         return 0;
4372 }
4373
4374 static int
4375 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4376                    enum ieee80211_ampdu_mlme_action action,
4377                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4378                    u8 buf_size)
4379 {
4380         switch (action) {
4381         case IEEE80211_AMPDU_RX_START:
4382         case IEEE80211_AMPDU_RX_STOP:
4383                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4384                         return -ENOTSUPP;
4385                 return 0;
4386         default:
4387                 return -ENOTSUPP;
4388         }
4389 }
4390
4391 static const struct ieee80211_ops mwl8k_ops = {
4392         .tx                     = mwl8k_tx,
4393         .start                  = mwl8k_start,
4394         .stop                   = mwl8k_stop,
4395         .add_interface          = mwl8k_add_interface,
4396         .remove_interface       = mwl8k_remove_interface,
4397         .config                 = mwl8k_config,
4398         .bss_info_changed       = mwl8k_bss_info_changed,
4399         .prepare_multicast      = mwl8k_prepare_multicast,
4400         .configure_filter       = mwl8k_configure_filter,
4401         .set_key                = mwl8k_set_key,
4402         .set_rts_threshold      = mwl8k_set_rts_threshold,
4403         .sta_add                = mwl8k_sta_add,
4404         .sta_remove             = mwl8k_sta_remove,
4405         .conf_tx                = mwl8k_conf_tx,
4406         .get_stats              = mwl8k_get_stats,
4407         .get_survey             = mwl8k_get_survey,
4408         .ampdu_action           = mwl8k_ampdu_action,
4409 };
4410
4411 static void mwl8k_finalize_join_worker(struct work_struct *work)
4412 {
4413         struct mwl8k_priv *priv =
4414                 container_of(work, struct mwl8k_priv, finalize_join_worker);
4415         struct sk_buff *skb = priv->beacon_skb;
4416         struct ieee80211_mgmt *mgmt = (void *)skb->data;
4417         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
4418         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
4419                                          mgmt->u.beacon.variable, len);
4420         int dtim_period = 1;
4421
4422         if (tim && tim[1] >= 2)
4423                 dtim_period = tim[3];
4424
4425         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
4426
4427         dev_kfree_skb(skb);
4428         priv->beacon_skb = NULL;
4429 }
4430
4431 enum {
4432         MWL8363 = 0,
4433         MWL8687,
4434         MWL8366,
4435 };
4436
4437 #define MWL8K_8366_AP_FW_API 1
4438 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
4439 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
4440
4441 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
4442         [MWL8363] = {
4443                 .part_name      = "88w8363",
4444                 .helper_image   = "mwl8k/helper_8363.fw",
4445                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
4446         },
4447         [MWL8687] = {
4448                 .part_name      = "88w8687",
4449                 .helper_image   = "mwl8k/helper_8687.fw",
4450                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
4451         },
4452         [MWL8366] = {
4453                 .part_name      = "88w8366",
4454                 .helper_image   = "mwl8k/helper_8366.fw",
4455                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
4456                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4457                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
4458                 .ap_rxd_ops     = &rxd_8366_ap_ops,
4459         },
4460 };
4461
4462 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4463 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4464 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4465 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4466 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4467 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4468 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4469
4470 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4471         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4472         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4473         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4474         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4475         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4476         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4477         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4478         { },
4479 };
4480 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4481
4482 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4483 {
4484         int rc;
4485         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4486                "Trying alternative firmware %s\n", pci_name(priv->pdev),
4487                priv->fw_pref, priv->fw_alt);
4488         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4489         if (rc) {
4490                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4491                        pci_name(priv->pdev), priv->fw_alt);
4492                 return rc;
4493         }
4494         return 0;
4495 }
4496
4497 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4498 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4499 {
4500         struct mwl8k_priv *priv = context;
4501         struct mwl8k_device_info *di = priv->device_info;
4502         int rc;
4503
4504         switch (priv->fw_state) {
4505         case FW_STATE_INIT:
4506                 if (!fw) {
4507                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4508                                pci_name(priv->pdev), di->helper_image);
4509                         goto fail;
4510                 }
4511                 priv->fw_helper = fw;
4512                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4513                                       true);
4514                 if (rc && priv->fw_alt) {
4515                         rc = mwl8k_request_alt_fw(priv);
4516                         if (rc)
4517                                 goto fail;
4518                         priv->fw_state = FW_STATE_LOADING_ALT;
4519                 } else if (rc)
4520                         goto fail;
4521                 else
4522                         priv->fw_state = FW_STATE_LOADING_PREF;
4523                 break;
4524
4525         case FW_STATE_LOADING_PREF:
4526                 if (!fw) {
4527                         if (priv->fw_alt) {
4528                                 rc = mwl8k_request_alt_fw(priv);
4529                                 if (rc)
4530                                         goto fail;
4531                                 priv->fw_state = FW_STATE_LOADING_ALT;
4532                         } else
4533                                 goto fail;
4534                 } else {
4535                         priv->fw_ucode = fw;
4536                         rc = mwl8k_firmware_load_success(priv);
4537                         if (rc)
4538                                 goto fail;
4539                         else
4540                                 complete(&priv->firmware_loading_complete);
4541                 }
4542                 break;
4543
4544         case FW_STATE_LOADING_ALT:
4545                 if (!fw) {
4546                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4547                                pci_name(priv->pdev), di->helper_image);
4548                         goto fail;
4549                 }
4550                 priv->fw_ucode = fw;
4551                 rc = mwl8k_firmware_load_success(priv);
4552                 if (rc)
4553                         goto fail;
4554                 else
4555                         complete(&priv->firmware_loading_complete);
4556                 break;
4557
4558         default:
4559                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4560                        MWL8K_NAME, priv->fw_state);
4561                 BUG_ON(1);
4562         }
4563
4564         return;
4565
4566 fail:
4567         priv->fw_state = FW_STATE_ERROR;
4568         complete(&priv->firmware_loading_complete);
4569         device_release_driver(&priv->pdev->dev);
4570         mwl8k_release_firmware(priv);
4571 }
4572
4573 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4574                                bool nowait)
4575 {
4576         struct mwl8k_priv *priv = hw->priv;
4577         int rc;
4578
4579         /* Reset firmware and hardware */
4580         mwl8k_hw_reset(priv);
4581
4582         /* Ask userland hotplug daemon for the device firmware */
4583         rc = mwl8k_request_firmware(priv, fw_image, nowait);
4584         if (rc) {
4585                 wiphy_err(hw->wiphy, "Firmware files not found\n");
4586                 return rc;
4587         }
4588
4589         if (nowait)
4590                 return rc;
4591
4592         /* Load firmware into hardware */
4593         rc = mwl8k_load_firmware(hw);
4594         if (rc)
4595                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4596
4597         /* Reclaim memory once firmware is successfully loaded */
4598         mwl8k_release_firmware(priv);
4599
4600         return rc;
4601 }
4602
4603 /* initialize hw after successfully loading a firmware image */
4604 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4605 {
4606         struct mwl8k_priv *priv = hw->priv;
4607         int rc = 0;
4608         int i;
4609
4610         if (priv->ap_fw) {
4611                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4612                 if (priv->rxd_ops == NULL) {
4613                         wiphy_err(hw->wiphy,
4614                                   "Driver does not have AP firmware image support for this hardware\n");
4615                         goto err_stop_firmware;
4616                 }
4617         } else {
4618                 priv->rxd_ops = &rxd_sta_ops;
4619         }
4620
4621         priv->sniffer_enabled = false;
4622         priv->wmm_enabled = false;
4623         priv->pending_tx_pkts = 0;
4624
4625         rc = mwl8k_rxq_init(hw, 0);
4626         if (rc)
4627                 goto err_stop_firmware;
4628         rxq_refill(hw, 0, INT_MAX);
4629
4630         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4631                 rc = mwl8k_txq_init(hw, i);
4632                 if (rc)
4633                         goto err_free_queues;
4634         }
4635
4636         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4637         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4638         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4639                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4640         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4641
4642         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4643                          IRQF_SHARED, MWL8K_NAME, hw);
4644         if (rc) {
4645                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4646                 goto err_free_queues;
4647         }
4648
4649         /*
4650          * Temporarily enable interrupts.  Initial firmware host
4651          * commands use interrupts and avoid polling.  Disable
4652          * interrupts when done.
4653          */
4654         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4655
4656         /* Get config data, mac addrs etc */
4657         if (priv->ap_fw) {
4658                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4659                 if (!rc)
4660                         rc = mwl8k_cmd_set_hw_spec(hw);
4661         } else {
4662                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4663         }
4664         if (rc) {
4665                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4666                 goto err_free_irq;
4667         }
4668
4669         /* Turn radio off */
4670         rc = mwl8k_cmd_radio_disable(hw);
4671         if (rc) {
4672                 wiphy_err(hw->wiphy, "Cannot disable\n");
4673                 goto err_free_irq;
4674         }
4675
4676         /* Clear MAC address */
4677         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4678         if (rc) {
4679                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4680                 goto err_free_irq;
4681         }
4682
4683         /* Disable interrupts */
4684         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4685         free_irq(priv->pdev->irq, hw);
4686
4687         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4688                    priv->device_info->part_name,
4689                    priv->hw_rev, hw->wiphy->perm_addr,
4690                    priv->ap_fw ? "AP" : "STA",
4691                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4692                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4693
4694         return 0;
4695
4696 err_free_irq:
4697         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4698         free_irq(priv->pdev->irq, hw);
4699
4700 err_free_queues:
4701         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4702                 mwl8k_txq_deinit(hw, i);
4703         mwl8k_rxq_deinit(hw, 0);
4704
4705 err_stop_firmware:
4706         mwl8k_hw_reset(priv);
4707
4708         return rc;
4709 }
4710
4711 /*
4712  * invoke mwl8k_reload_firmware to change the firmware image after the device
4713  * has already been registered
4714  */
4715 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4716 {
4717         int i, rc = 0;
4718         struct mwl8k_priv *priv = hw->priv;
4719
4720         mwl8k_stop(hw);
4721         mwl8k_rxq_deinit(hw, 0);
4722
4723         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4724                 mwl8k_txq_deinit(hw, i);
4725
4726         rc = mwl8k_init_firmware(hw, fw_image, false);
4727         if (rc)
4728                 goto fail;
4729
4730         rc = mwl8k_probe_hw(hw);
4731         if (rc)
4732                 goto fail;
4733
4734         rc = mwl8k_start(hw);
4735         if (rc)
4736                 goto fail;
4737
4738         rc = mwl8k_config(hw, ~0);
4739         if (rc)
4740                 goto fail;
4741
4742         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4743                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4744                 if (rc)
4745                         goto fail;
4746         }
4747
4748         return rc;
4749
4750 fail:
4751         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4752         return rc;
4753 }
4754
4755 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4756 {
4757         struct ieee80211_hw *hw = priv->hw;
4758         int i, rc;
4759
4760         rc = mwl8k_load_firmware(hw);
4761         mwl8k_release_firmware(priv);
4762         if (rc) {
4763                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4764                 return rc;
4765         }
4766
4767         /*
4768          * Extra headroom is the size of the required DMA header
4769          * minus the size of the smallest 802.11 frame (CTS frame).
4770          */
4771         hw->extra_tx_headroom =
4772                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4773
4774         hw->channel_change_time = 10;
4775
4776         hw->queues = MWL8K_TX_QUEUES;
4777
4778         /* Set rssi values to dBm */
4779         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
4780         hw->vif_data_size = sizeof(struct mwl8k_vif);
4781         hw->sta_data_size = sizeof(struct mwl8k_sta);
4782
4783         priv->macids_used = 0;
4784         INIT_LIST_HEAD(&priv->vif_list);
4785
4786         /* Set default radio state and preamble */
4787         priv->radio_on = 0;
4788         priv->radio_short_preamble = 0;
4789
4790         /* Finalize join worker */
4791         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4792
4793         /* TX reclaim and RX tasklets.  */
4794         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4795         tasklet_disable(&priv->poll_tx_task);
4796         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4797         tasklet_disable(&priv->poll_rx_task);
4798
4799         /* Power management cookie */
4800         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4801         if (priv->cookie == NULL)
4802                 return -ENOMEM;
4803
4804         mutex_init(&priv->fw_mutex);
4805         priv->fw_mutex_owner = NULL;
4806         priv->fw_mutex_depth = 0;
4807         priv->hostcmd_wait = NULL;
4808
4809         spin_lock_init(&priv->tx_lock);
4810
4811         priv->tx_wait = NULL;
4812
4813         rc = mwl8k_probe_hw(hw);
4814         if (rc)
4815                 goto err_free_cookie;
4816
4817         hw->wiphy->interface_modes = 0;
4818         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4819                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4820         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4821                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4822
4823         rc = ieee80211_register_hw(hw);
4824         if (rc) {
4825                 wiphy_err(hw->wiphy, "Cannot register device\n");
4826                 goto err_unprobe_hw;
4827         }
4828
4829         return 0;
4830
4831 err_unprobe_hw:
4832         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4833                 mwl8k_txq_deinit(hw, i);
4834         mwl8k_rxq_deinit(hw, 0);
4835
4836 err_free_cookie:
4837         if (priv->cookie != NULL)
4838                 pci_free_consistent(priv->pdev, 4,
4839                                 priv->cookie, priv->cookie_dma);
4840
4841         return rc;
4842 }
4843 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4844                                  const struct pci_device_id *id)
4845 {
4846         static int printed_version;
4847         struct ieee80211_hw *hw;
4848         struct mwl8k_priv *priv;
4849         struct mwl8k_device_info *di;
4850         int rc;
4851
4852         if (!printed_version) {
4853                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4854                 printed_version = 1;
4855         }
4856
4857
4858         rc = pci_enable_device(pdev);
4859         if (rc) {
4860                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4861                        MWL8K_NAME);
4862                 return rc;
4863         }
4864
4865         rc = pci_request_regions(pdev, MWL8K_NAME);
4866         if (rc) {
4867                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4868                        MWL8K_NAME);
4869                 goto err_disable_device;
4870         }
4871
4872         pci_set_master(pdev);
4873
4874
4875         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4876         if (hw == NULL) {
4877                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4878                 rc = -ENOMEM;
4879                 goto err_free_reg;
4880         }
4881
4882         SET_IEEE80211_DEV(hw, &pdev->dev);
4883         pci_set_drvdata(pdev, hw);
4884
4885         priv = hw->priv;
4886         priv->hw = hw;
4887         priv->pdev = pdev;
4888         priv->device_info = &mwl8k_info_tbl[id->driver_data];
4889
4890
4891         priv->sram = pci_iomap(pdev, 0, 0x10000);
4892         if (priv->sram == NULL) {
4893                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4894                 goto err_iounmap;
4895         }
4896
4897         /*
4898          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4899          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4900          */
4901         priv->regs = pci_iomap(pdev, 1, 0x10000);
4902         if (priv->regs == NULL) {
4903                 priv->regs = pci_iomap(pdev, 2, 0x10000);
4904                 if (priv->regs == NULL) {
4905                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
4906                         goto err_iounmap;
4907                 }
4908         }
4909
4910         /*
4911          * Choose the initial fw image depending on user input.  If a second
4912          * image is available, make it the alternative image that will be
4913          * loaded if the first one fails.
4914          */
4915         init_completion(&priv->firmware_loading_complete);
4916         di = priv->device_info;
4917         if (ap_mode_default && di->fw_image_ap) {
4918                 priv->fw_pref = di->fw_image_ap;
4919                 priv->fw_alt = di->fw_image_sta;
4920         } else if (!ap_mode_default && di->fw_image_sta) {
4921                 priv->fw_pref = di->fw_image_sta;
4922                 priv->fw_alt = di->fw_image_ap;
4923         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4924                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
4925                 priv->fw_pref = di->fw_image_sta;
4926         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4927                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
4928                 priv->fw_pref = di->fw_image_ap;
4929         }
4930         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4931         if (rc)
4932                 goto err_stop_firmware;
4933         return rc;
4934
4935 err_stop_firmware:
4936         mwl8k_hw_reset(priv);
4937
4938 err_iounmap:
4939         if (priv->regs != NULL)
4940                 pci_iounmap(pdev, priv->regs);
4941
4942         if (priv->sram != NULL)
4943                 pci_iounmap(pdev, priv->sram);
4944
4945         pci_set_drvdata(pdev, NULL);
4946         ieee80211_free_hw(hw);
4947
4948 err_free_reg:
4949         pci_release_regions(pdev);
4950
4951 err_disable_device:
4952         pci_disable_device(pdev);
4953
4954         return rc;
4955 }
4956
4957 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4958 {
4959         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4960 }
4961
4962 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4963 {
4964         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4965         struct mwl8k_priv *priv;
4966         int i;
4967
4968         if (hw == NULL)
4969                 return;
4970         priv = hw->priv;
4971
4972         wait_for_completion(&priv->firmware_loading_complete);
4973
4974         if (priv->fw_state == FW_STATE_ERROR) {
4975                 mwl8k_hw_reset(priv);
4976                 goto unmap;
4977         }
4978
4979         ieee80211_stop_queues(hw);
4980
4981         ieee80211_unregister_hw(hw);
4982
4983         /* Remove TX reclaim and RX tasklets.  */
4984         tasklet_kill(&priv->poll_tx_task);
4985         tasklet_kill(&priv->poll_rx_task);
4986
4987         /* Stop hardware */
4988         mwl8k_hw_reset(priv);
4989
4990         /* Return all skbs to mac80211 */
4991         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4992                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4993
4994         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4995                 mwl8k_txq_deinit(hw, i);
4996
4997         mwl8k_rxq_deinit(hw, 0);
4998
4999         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5000
5001 unmap:
5002         pci_iounmap(pdev, priv->regs);
5003         pci_iounmap(pdev, priv->sram);
5004         pci_set_drvdata(pdev, NULL);
5005         ieee80211_free_hw(hw);
5006         pci_release_regions(pdev);
5007         pci_disable_device(pdev);
5008 }
5009
5010 static struct pci_driver mwl8k_driver = {
5011         .name           = MWL8K_NAME,
5012         .id_table       = mwl8k_pci_id_table,
5013         .probe          = mwl8k_probe,
5014         .remove         = __devexit_p(mwl8k_remove),
5015         .shutdown       = __devexit_p(mwl8k_shutdown),
5016 };
5017
5018 static int __init mwl8k_init(void)
5019 {
5020         return pci_register_driver(&mwl8k_driver);
5021 }
5022
5023 static void __exit mwl8k_exit(void)
5024 {
5025         pci_unregister_driver(&mwl8k_driver);
5026 }
5027
5028 module_init(mwl8k_init);
5029 module_exit(mwl8k_exit);
5030
5031 MODULE_DESCRIPTION(MWL8K_DESC);
5032 MODULE_VERSION(MWL8K_VERSION);
5033 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5034 MODULE_LICENSE("GPL");