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 = kmalloc(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         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
1066
1067         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1068                 int desc_size;
1069                 void *rxd;
1070                 int nexti;
1071                 dma_addr_t next_dma_addr;
1072
1073                 desc_size = priv->rxd_ops->rxd_size;
1074                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1075
1076                 nexti = i + 1;
1077                 if (nexti == MWL8K_RX_DESCS)
1078                         nexti = 0;
1079                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1080
1081                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1082         }
1083
1084         return 0;
1085 }
1086
1087 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1088 {
1089         struct mwl8k_priv *priv = hw->priv;
1090         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1091         int refilled;
1092
1093         refilled = 0;
1094         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1095                 struct sk_buff *skb;
1096                 dma_addr_t addr;
1097                 int rx;
1098                 void *rxd;
1099
1100                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1101                 if (skb == NULL)
1102                         break;
1103
1104                 addr = pci_map_single(priv->pdev, skb->data,
1105                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1106
1107                 rxq->rxd_count++;
1108                 rx = rxq->tail++;
1109                 if (rxq->tail == MWL8K_RX_DESCS)
1110                         rxq->tail = 0;
1111                 rxq->buf[rx].skb = skb;
1112                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1113
1114                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1115                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1116
1117                 refilled++;
1118         }
1119
1120         return refilled;
1121 }
1122
1123 /* Must be called only when the card's reception is completely halted */
1124 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1125 {
1126         struct mwl8k_priv *priv = hw->priv;
1127         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1128         int i;
1129
1130         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1131                 if (rxq->buf[i].skb != NULL) {
1132                         pci_unmap_single(priv->pdev,
1133                                          dma_unmap_addr(&rxq->buf[i], dma),
1134                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1135                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1136
1137                         kfree_skb(rxq->buf[i].skb);
1138                         rxq->buf[i].skb = NULL;
1139                 }
1140         }
1141
1142         kfree(rxq->buf);
1143         rxq->buf = NULL;
1144
1145         pci_free_consistent(priv->pdev,
1146                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1147                             rxq->rxd, rxq->rxd_dma);
1148         rxq->rxd = NULL;
1149 }
1150
1151
1152 /*
1153  * Scan a list of BSSIDs to process for finalize join.
1154  * Allows for extension to process multiple BSSIDs.
1155  */
1156 static inline int
1157 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1158 {
1159         return priv->capture_beacon &&
1160                 ieee80211_is_beacon(wh->frame_control) &&
1161                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1162 }
1163
1164 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1165                                      struct sk_buff *skb)
1166 {
1167         struct mwl8k_priv *priv = hw->priv;
1168
1169         priv->capture_beacon = false;
1170         memset(priv->capture_bssid, 0, ETH_ALEN);
1171
1172         /*
1173          * Use GFP_ATOMIC as rxq_process is called from
1174          * the primary interrupt handler, memory allocation call
1175          * must not sleep.
1176          */
1177         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1178         if (priv->beacon_skb != NULL)
1179                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1180 }
1181
1182 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1183                                                    u8 *bssid)
1184 {
1185         struct mwl8k_vif *mwl8k_vif;
1186
1187         list_for_each_entry(mwl8k_vif,
1188                             vif_list, list) {
1189                 if (memcmp(bssid, mwl8k_vif->bssid,
1190                            ETH_ALEN) == 0)
1191                         return mwl8k_vif;
1192         }
1193
1194         return NULL;
1195 }
1196
1197 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1198 {
1199         struct mwl8k_priv *priv = hw->priv;
1200         struct mwl8k_vif *mwl8k_vif = NULL;
1201         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202         int processed;
1203
1204         processed = 0;
1205         while (rxq->rxd_count && limit--) {
1206                 struct sk_buff *skb;
1207                 void *rxd;
1208                 int pkt_len;
1209                 struct ieee80211_rx_status status;
1210                 struct ieee80211_hdr *wh;
1211                 __le16 qos;
1212
1213                 skb = rxq->buf[rxq->head].skb;
1214                 if (skb == NULL)
1215                         break;
1216
1217                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1218
1219                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1220                                                         &priv->noise);
1221                 if (pkt_len < 0)
1222                         break;
1223
1224                 rxq->buf[rxq->head].skb = NULL;
1225
1226                 pci_unmap_single(priv->pdev,
1227                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1228                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1229                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1230
1231                 rxq->head++;
1232                 if (rxq->head == MWL8K_RX_DESCS)
1233                         rxq->head = 0;
1234
1235                 rxq->rxd_count--;
1236
1237                 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1238
1239                 /*
1240                  * Check for a pending join operation.  Save a
1241                  * copy of the beacon and schedule a tasklet to
1242                  * send a FINALIZE_JOIN command to the firmware.
1243                  */
1244                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1245                         mwl8k_save_beacon(hw, skb);
1246
1247                 if (ieee80211_has_protected(wh->frame_control)) {
1248
1249                         /* Check if hw crypto has been enabled for
1250                          * this bss. If yes, set the status flags
1251                          * accordingly
1252                          */
1253                         mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1254                                                                 wh->addr1);
1255
1256                         if (mwl8k_vif != NULL &&
1257                             mwl8k_vif->is_hw_crypto_enabled == true) {
1258                                 /*
1259                                  * When MMIC ERROR is encountered
1260                                  * by the firmware, payload is
1261                                  * dropped and only 32 bytes of
1262                                  * mwl8k Firmware header is sent
1263                                  * to the host.
1264                                  *
1265                                  * We need to add four bytes of
1266                                  * key information.  In it
1267                                  * MAC80211 expects keyidx set to
1268                                  * 0 for triggering Counter
1269                                  * Measure of MMIC failure.
1270                                  */
1271                                 if (status.flag & RX_FLAG_MMIC_ERROR) {
1272                                         struct mwl8k_dma_data *tr;
1273                                         tr = (struct mwl8k_dma_data *)skb->data;
1274                                         memset((void *)&(tr->data), 0, 4);
1275                                         pkt_len += 4;
1276                                 }
1277
1278                                 if (!ieee80211_is_auth(wh->frame_control))
1279                                         status.flag |= RX_FLAG_IV_STRIPPED |
1280                                                        RX_FLAG_DECRYPTED |
1281                                                        RX_FLAG_MMIC_STRIPPED;
1282                         }
1283                 }
1284
1285                 skb_put(skb, pkt_len);
1286                 mwl8k_remove_dma_header(skb, qos);
1287                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1288                 ieee80211_rx_irqsafe(hw, skb);
1289
1290                 processed++;
1291         }
1292
1293         return processed;
1294 }
1295
1296
1297 /*
1298  * Packet transmission.
1299  */
1300
1301 #define MWL8K_TXD_STATUS_OK                     0x00000001
1302 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1303 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1304 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1305 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1306
1307 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1308 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1309 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1310 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1311 #define MWL8K_QOS_EOSP                          0x0010
1312
1313 struct mwl8k_tx_desc {
1314         __le32 status;
1315         __u8 data_rate;
1316         __u8 tx_priority;
1317         __le16 qos_control;
1318         __le32 pkt_phys_addr;
1319         __le16 pkt_len;
1320         __u8 dest_MAC_addr[ETH_ALEN];
1321         __le32 next_txd_phys_addr;
1322         __le32 reserved;
1323         __le16 rate_info;
1324         __u8 peer_id;
1325         __u8 tx_frag_cnt;
1326 } __packed;
1327
1328 #define MWL8K_TX_DESCS          128
1329
1330 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1331 {
1332         struct mwl8k_priv *priv = hw->priv;
1333         struct mwl8k_tx_queue *txq = priv->txq + index;
1334         int size;
1335         int i;
1336
1337         txq->len = 0;
1338         txq->head = 0;
1339         txq->tail = 0;
1340
1341         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1342
1343         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1344         if (txq->txd == NULL) {
1345                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1346                 return -ENOMEM;
1347         }
1348         memset(txq->txd, 0, size);
1349
1350         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1351         if (txq->skb == NULL) {
1352                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1353                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1354                 return -ENOMEM;
1355         }
1356         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1357
1358         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1359                 struct mwl8k_tx_desc *tx_desc;
1360                 int nexti;
1361
1362                 tx_desc = txq->txd + i;
1363                 nexti = (i + 1) % MWL8K_TX_DESCS;
1364
1365                 tx_desc->status = 0;
1366                 tx_desc->next_txd_phys_addr =
1367                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1368         }
1369
1370         return 0;
1371 }
1372
1373 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1374 {
1375         iowrite32(MWL8K_H2A_INT_PPA_READY,
1376                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1377         iowrite32(MWL8K_H2A_INT_DUMMY,
1378                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1379         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1380 }
1381
1382 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1383 {
1384         struct mwl8k_priv *priv = hw->priv;
1385         int i;
1386
1387         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1388                 struct mwl8k_tx_queue *txq = priv->txq + i;
1389                 int fw_owned = 0;
1390                 int drv_owned = 0;
1391                 int unused = 0;
1392                 int desc;
1393
1394                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1395                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1396                         u32 status;
1397
1398                         status = le32_to_cpu(tx_desc->status);
1399                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1400                                 fw_owned++;
1401                         else
1402                                 drv_owned++;
1403
1404                         if (tx_desc->pkt_len == 0)
1405                                 unused++;
1406                 }
1407
1408                 wiphy_err(hw->wiphy,
1409                           "txq[%d] len=%d head=%d tail=%d "
1410                           "fw_owned=%d drv_owned=%d unused=%d\n",
1411                           i,
1412                           txq->len, txq->head, txq->tail,
1413                           fw_owned, drv_owned, unused);
1414         }
1415 }
1416
1417 /*
1418  * Must be called with priv->fw_mutex held and tx queues stopped.
1419  */
1420 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1421
1422 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1423 {
1424         struct mwl8k_priv *priv = hw->priv;
1425         DECLARE_COMPLETION_ONSTACK(tx_wait);
1426         int retry;
1427         int rc;
1428
1429         might_sleep();
1430
1431         /*
1432          * The TX queues are stopped at this point, so this test
1433          * doesn't need to take ->tx_lock.
1434          */
1435         if (!priv->pending_tx_pkts)
1436                 return 0;
1437
1438         retry = 0;
1439         rc = 0;
1440
1441         spin_lock_bh(&priv->tx_lock);
1442         priv->tx_wait = &tx_wait;
1443         while (!rc) {
1444                 int oldcount;
1445                 unsigned long timeout;
1446
1447                 oldcount = priv->pending_tx_pkts;
1448
1449                 spin_unlock_bh(&priv->tx_lock);
1450                 timeout = wait_for_completion_timeout(&tx_wait,
1451                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1452                 spin_lock_bh(&priv->tx_lock);
1453
1454                 if (timeout) {
1455                         WARN_ON(priv->pending_tx_pkts);
1456                         if (retry) {
1457                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1458                         }
1459                         break;
1460                 }
1461
1462                 if (priv->pending_tx_pkts < oldcount) {
1463                         wiphy_notice(hw->wiphy,
1464                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1465                                      oldcount, priv->pending_tx_pkts);
1466                         retry = 1;
1467                         continue;
1468                 }
1469
1470                 priv->tx_wait = NULL;
1471
1472                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1473                           MWL8K_TX_WAIT_TIMEOUT_MS);
1474                 mwl8k_dump_tx_rings(hw);
1475
1476                 rc = -ETIMEDOUT;
1477         }
1478         spin_unlock_bh(&priv->tx_lock);
1479
1480         return rc;
1481 }
1482
1483 #define MWL8K_TXD_SUCCESS(status)                               \
1484         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1485                      MWL8K_TXD_STATUS_OK_RETRY |                \
1486                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1487
1488 static int
1489 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1490 {
1491         struct mwl8k_priv *priv = hw->priv;
1492         struct mwl8k_tx_queue *txq = priv->txq + index;
1493         int processed;
1494
1495         processed = 0;
1496         while (txq->len > 0 && limit--) {
1497                 int tx;
1498                 struct mwl8k_tx_desc *tx_desc;
1499                 unsigned long addr;
1500                 int size;
1501                 struct sk_buff *skb;
1502                 struct ieee80211_tx_info *info;
1503                 u32 status;
1504
1505                 tx = txq->head;
1506                 tx_desc = txq->txd + tx;
1507
1508                 status = le32_to_cpu(tx_desc->status);
1509
1510                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1511                         if (!force)
1512                                 break;
1513                         tx_desc->status &=
1514                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1515                 }
1516
1517                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1518                 BUG_ON(txq->len == 0);
1519                 txq->len--;
1520                 priv->pending_tx_pkts--;
1521
1522                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1523                 size = le16_to_cpu(tx_desc->pkt_len);
1524                 skb = txq->skb[tx];
1525                 txq->skb[tx] = NULL;
1526
1527                 BUG_ON(skb == NULL);
1528                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1529
1530                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1531
1532                 /* Mark descriptor as unused */
1533                 tx_desc->pkt_phys_addr = 0;
1534                 tx_desc->pkt_len = 0;
1535
1536                 info = IEEE80211_SKB_CB(skb);
1537                 ieee80211_tx_info_clear_status(info);
1538                 if (MWL8K_TXD_SUCCESS(status))
1539                         info->flags |= IEEE80211_TX_STAT_ACK;
1540
1541                 ieee80211_tx_status_irqsafe(hw, skb);
1542
1543                 processed++;
1544         }
1545
1546         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1547                 ieee80211_wake_queue(hw, index);
1548
1549         return processed;
1550 }
1551
1552 /* must be called only when the card's transmit is completely halted */
1553 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1554 {
1555         struct mwl8k_priv *priv = hw->priv;
1556         struct mwl8k_tx_queue *txq = priv->txq + index;
1557
1558         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1559
1560         kfree(txq->skb);
1561         txq->skb = NULL;
1562
1563         pci_free_consistent(priv->pdev,
1564                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1565                             txq->txd, txq->txd_dma);
1566         txq->txd = NULL;
1567 }
1568
1569 static int
1570 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1571 {
1572         struct mwl8k_priv *priv = hw->priv;
1573         struct ieee80211_tx_info *tx_info;
1574         struct mwl8k_vif *mwl8k_vif;
1575         struct ieee80211_hdr *wh;
1576         struct mwl8k_tx_queue *txq;
1577         struct mwl8k_tx_desc *tx;
1578         dma_addr_t dma;
1579         u32 txstatus;
1580         u8 txdatarate;
1581         u16 qos;
1582
1583         wh = (struct ieee80211_hdr *)skb->data;
1584         if (ieee80211_is_data_qos(wh->frame_control))
1585                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1586         else
1587                 qos = 0;
1588
1589         if (priv->ap_fw)
1590                 mwl8k_encapsulate_tx_frame(skb);
1591         else
1592                 mwl8k_add_dma_header(skb, 0);
1593
1594         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1595
1596         tx_info = IEEE80211_SKB_CB(skb);
1597         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1598
1599         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1600                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1601                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1602                 mwl8k_vif->seqno += 0x10;
1603         }
1604
1605         /* Setup firmware control bit fields for each frame type.  */
1606         txstatus = 0;
1607         txdatarate = 0;
1608         if (ieee80211_is_mgmt(wh->frame_control) ||
1609             ieee80211_is_ctl(wh->frame_control)) {
1610                 txdatarate = 0;
1611                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1612         } else if (ieee80211_is_data(wh->frame_control)) {
1613                 txdatarate = 1;
1614                 if (is_multicast_ether_addr(wh->addr1))
1615                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1616
1617                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1618                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1619                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1620                 else
1621                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1622         }
1623
1624         dma = pci_map_single(priv->pdev, skb->data,
1625                                 skb->len, PCI_DMA_TODEVICE);
1626
1627         if (pci_dma_mapping_error(priv->pdev, dma)) {
1628                 wiphy_debug(hw->wiphy,
1629                             "failed to dma map skb, dropping TX frame.\n");
1630                 dev_kfree_skb(skb);
1631                 return NETDEV_TX_OK;
1632         }
1633
1634         spin_lock_bh(&priv->tx_lock);
1635
1636         txq = priv->txq + index;
1637
1638         BUG_ON(txq->skb[txq->tail] != NULL);
1639         txq->skb[txq->tail] = skb;
1640
1641         tx = txq->txd + txq->tail;
1642         tx->data_rate = txdatarate;
1643         tx->tx_priority = index;
1644         tx->qos_control = cpu_to_le16(qos);
1645         tx->pkt_phys_addr = cpu_to_le32(dma);
1646         tx->pkt_len = cpu_to_le16(skb->len);
1647         tx->rate_info = 0;
1648         if (!priv->ap_fw && tx_info->control.sta != NULL)
1649                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1650         else
1651                 tx->peer_id = 0;
1652         wmb();
1653         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1654
1655         txq->len++;
1656         priv->pending_tx_pkts++;
1657
1658         txq->tail++;
1659         if (txq->tail == MWL8K_TX_DESCS)
1660                 txq->tail = 0;
1661
1662         if (txq->head == txq->tail)
1663                 ieee80211_stop_queue(hw, index);
1664
1665         mwl8k_tx_start(priv);
1666
1667         spin_unlock_bh(&priv->tx_lock);
1668
1669         return NETDEV_TX_OK;
1670 }
1671
1672
1673 /*
1674  * Firmware access.
1675  *
1676  * We have the following requirements for issuing firmware commands:
1677  * - Some commands require that the packet transmit path is idle when
1678  *   the command is issued.  (For simplicity, we'll just quiesce the
1679  *   transmit path for every command.)
1680  * - There are certain sequences of commands that need to be issued to
1681  *   the hardware sequentially, with no other intervening commands.
1682  *
1683  * This leads to an implementation of a "firmware lock" as a mutex that
1684  * can be taken recursively, and which is taken by both the low-level
1685  * command submission function (mwl8k_post_cmd) as well as any users of
1686  * that function that require issuing of an atomic sequence of commands,
1687  * and quiesces the transmit path whenever it's taken.
1688  */
1689 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1690 {
1691         struct mwl8k_priv *priv = hw->priv;
1692
1693         if (priv->fw_mutex_owner != current) {
1694                 int rc;
1695
1696                 mutex_lock(&priv->fw_mutex);
1697                 ieee80211_stop_queues(hw);
1698
1699                 rc = mwl8k_tx_wait_empty(hw);
1700                 if (rc) {
1701                         ieee80211_wake_queues(hw);
1702                         mutex_unlock(&priv->fw_mutex);
1703
1704                         return rc;
1705                 }
1706
1707                 priv->fw_mutex_owner = current;
1708         }
1709
1710         priv->fw_mutex_depth++;
1711
1712         return 0;
1713 }
1714
1715 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1716 {
1717         struct mwl8k_priv *priv = hw->priv;
1718
1719         if (!--priv->fw_mutex_depth) {
1720                 ieee80211_wake_queues(hw);
1721                 priv->fw_mutex_owner = NULL;
1722                 mutex_unlock(&priv->fw_mutex);
1723         }
1724 }
1725
1726
1727 /*
1728  * Command processing.
1729  */
1730
1731 /* Timeout firmware commands after 10s */
1732 #define MWL8K_CMD_TIMEOUT_MS    10000
1733
1734 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1735 {
1736         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1737         struct mwl8k_priv *priv = hw->priv;
1738         void __iomem *regs = priv->regs;
1739         dma_addr_t dma_addr;
1740         unsigned int dma_size;
1741         int rc;
1742         unsigned long timeout = 0;
1743         u8 buf[32];
1744
1745         cmd->result = (__force __le16) 0xffff;
1746         dma_size = le16_to_cpu(cmd->length);
1747         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1748                                   PCI_DMA_BIDIRECTIONAL);
1749         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1750                 return -ENOMEM;
1751
1752         rc = mwl8k_fw_lock(hw);
1753         if (rc) {
1754                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1755                                                 PCI_DMA_BIDIRECTIONAL);
1756                 return rc;
1757         }
1758
1759         priv->hostcmd_wait = &cmd_wait;
1760         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1761         iowrite32(MWL8K_H2A_INT_DOORBELL,
1762                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1763         iowrite32(MWL8K_H2A_INT_DUMMY,
1764                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1765
1766         timeout = wait_for_completion_timeout(&cmd_wait,
1767                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1768
1769         priv->hostcmd_wait = NULL;
1770
1771         mwl8k_fw_unlock(hw);
1772
1773         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1774                                         PCI_DMA_BIDIRECTIONAL);
1775
1776         if (!timeout) {
1777                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1778                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1779                           MWL8K_CMD_TIMEOUT_MS);
1780                 rc = -ETIMEDOUT;
1781         } else {
1782                 int ms;
1783
1784                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1785
1786                 rc = cmd->result ? -EINVAL : 0;
1787                 if (rc)
1788                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1789                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1790                                   le16_to_cpu(cmd->result));
1791                 else if (ms > 2000)
1792                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1793                                      mwl8k_cmd_name(cmd->code,
1794                                                     buf, sizeof(buf)),
1795                                      ms);
1796         }
1797
1798         return rc;
1799 }
1800
1801 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1802                                  struct ieee80211_vif *vif,
1803                                  struct mwl8k_cmd_pkt *cmd)
1804 {
1805         if (vif != NULL)
1806                 cmd->macid = MWL8K_VIF(vif)->macid;
1807         return mwl8k_post_cmd(hw, cmd);
1808 }
1809
1810 /*
1811  * Setup code shared between STA and AP firmware images.
1812  */
1813 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1814 {
1815         struct mwl8k_priv *priv = hw->priv;
1816
1817         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1818         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1819
1820         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1821         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1822
1823         priv->band_24.band = IEEE80211_BAND_2GHZ;
1824         priv->band_24.channels = priv->channels_24;
1825         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1826         priv->band_24.bitrates = priv->rates_24;
1827         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1828
1829         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1830 }
1831
1832 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1833 {
1834         struct mwl8k_priv *priv = hw->priv;
1835
1836         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1837         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1838
1839         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1840         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1841
1842         priv->band_50.band = IEEE80211_BAND_5GHZ;
1843         priv->band_50.channels = priv->channels_50;
1844         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1845         priv->band_50.bitrates = priv->rates_50;
1846         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1847
1848         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1849 }
1850
1851 /*
1852  * CMD_GET_HW_SPEC (STA version).
1853  */
1854 struct mwl8k_cmd_get_hw_spec_sta {
1855         struct mwl8k_cmd_pkt header;
1856         __u8 hw_rev;
1857         __u8 host_interface;
1858         __le16 num_mcaddrs;
1859         __u8 perm_addr[ETH_ALEN];
1860         __le16 region_code;
1861         __le32 fw_rev;
1862         __le32 ps_cookie;
1863         __le32 caps;
1864         __u8 mcs_bitmap[16];
1865         __le32 rx_queue_ptr;
1866         __le32 num_tx_queues;
1867         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1868         __le32 caps2;
1869         __le32 num_tx_desc_per_queue;
1870         __le32 total_rxd;
1871 } __packed;
1872
1873 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1874 #define MWL8K_CAP_GREENFIELD            0x08000000
1875 #define MWL8K_CAP_AMPDU                 0x04000000
1876 #define MWL8K_CAP_RX_STBC               0x01000000
1877 #define MWL8K_CAP_TX_STBC               0x00800000
1878 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1879 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1880 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1881 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1882 #define MWL8K_CAP_DELAY_BA              0x00003000
1883 #define MWL8K_CAP_MIMO                  0x00000200
1884 #define MWL8K_CAP_40MHZ                 0x00000100
1885 #define MWL8K_CAP_BAND_MASK             0x00000007
1886 #define MWL8K_CAP_5GHZ                  0x00000004
1887 #define MWL8K_CAP_2GHZ4                 0x00000001
1888
1889 static void
1890 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1891                   struct ieee80211_supported_band *band, u32 cap)
1892 {
1893         int rx_streams;
1894         int tx_streams;
1895
1896         band->ht_cap.ht_supported = 1;
1897
1898         if (cap & MWL8K_CAP_MAX_AMSDU)
1899                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1900         if (cap & MWL8K_CAP_GREENFIELD)
1901                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1902         if (cap & MWL8K_CAP_AMPDU) {
1903                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1904                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1905                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1906         }
1907         if (cap & MWL8K_CAP_RX_STBC)
1908                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1909         if (cap & MWL8K_CAP_TX_STBC)
1910                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1911         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1912                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1913         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1914                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1915         if (cap & MWL8K_CAP_DELAY_BA)
1916                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1917         if (cap & MWL8K_CAP_40MHZ)
1918                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1919
1920         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1921         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1922
1923         band->ht_cap.mcs.rx_mask[0] = 0xff;
1924         if (rx_streams >= 2)
1925                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1926         if (rx_streams >= 3)
1927                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1928         band->ht_cap.mcs.rx_mask[4] = 0x01;
1929         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1930
1931         if (rx_streams != tx_streams) {
1932                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1933                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1934                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1935         }
1936 }
1937
1938 static void
1939 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1940 {
1941         struct mwl8k_priv *priv = hw->priv;
1942
1943         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1944                 mwl8k_setup_2ghz_band(hw);
1945                 if (caps & MWL8K_CAP_MIMO)
1946                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1947         }
1948
1949         if (caps & MWL8K_CAP_5GHZ) {
1950                 mwl8k_setup_5ghz_band(hw);
1951                 if (caps & MWL8K_CAP_MIMO)
1952                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1953         }
1954 }
1955
1956 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1957 {
1958         struct mwl8k_priv *priv = hw->priv;
1959         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1960         int rc;
1961         int i;
1962
1963         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1964         if (cmd == NULL)
1965                 return -ENOMEM;
1966
1967         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1968         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1969
1970         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1971         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1972         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1973         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1974         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1975                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1976         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1977         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1978
1979         rc = mwl8k_post_cmd(hw, &cmd->header);
1980
1981         if (!rc) {
1982                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1983                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1984                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1985                 priv->hw_rev = cmd->hw_rev;
1986                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1987                 priv->ap_macids_supported = 0x00000000;
1988                 priv->sta_macids_supported = 0x00000001;
1989         }
1990
1991         kfree(cmd);
1992         return rc;
1993 }
1994
1995 /*
1996  * CMD_GET_HW_SPEC (AP version).
1997  */
1998 struct mwl8k_cmd_get_hw_spec_ap {
1999         struct mwl8k_cmd_pkt header;
2000         __u8 hw_rev;
2001         __u8 host_interface;
2002         __le16 num_wcb;
2003         __le16 num_mcaddrs;
2004         __u8 perm_addr[ETH_ALEN];
2005         __le16 region_code;
2006         __le16 num_antenna;
2007         __le32 fw_rev;
2008         __le32 wcbbase0;
2009         __le32 rxwrptr;
2010         __le32 rxrdptr;
2011         __le32 ps_cookie;
2012         __le32 wcbbase1;
2013         __le32 wcbbase2;
2014         __le32 wcbbase3;
2015         __le32 fw_api_version;
2016 } __packed;
2017
2018 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2019 {
2020         struct mwl8k_priv *priv = hw->priv;
2021         struct mwl8k_cmd_get_hw_spec_ap *cmd;
2022         int rc;
2023         u32 api_version;
2024
2025         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2026         if (cmd == NULL)
2027                 return -ENOMEM;
2028
2029         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2030         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2031
2032         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2033         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2034
2035         rc = mwl8k_post_cmd(hw, &cmd->header);
2036
2037         if (!rc) {
2038                 int off;
2039
2040                 api_version = le32_to_cpu(cmd->fw_api_version);
2041                 if (priv->device_info->fw_api_ap != api_version) {
2042                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
2043                                "  Expected %d got %d.\n", MWL8K_NAME,
2044                                priv->device_info->part_name,
2045                                priv->device_info->fw_api_ap,
2046                                api_version);
2047                         rc = -EINVAL;
2048                         goto done;
2049                 }
2050                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2051                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2052                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2053                 priv->hw_rev = cmd->hw_rev;
2054                 mwl8k_setup_2ghz_band(hw);
2055                 priv->ap_macids_supported = 0x000000ff;
2056                 priv->sta_macids_supported = 0x00000000;
2057
2058                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2059                 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
2060
2061                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2062                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2063
2064                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2065                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2066
2067                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2068                 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
2069
2070                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2071                 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
2072
2073                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2074                 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
2075         }
2076
2077 done:
2078         kfree(cmd);
2079         return rc;
2080 }
2081
2082 /*
2083  * CMD_SET_HW_SPEC.
2084  */
2085 struct mwl8k_cmd_set_hw_spec {
2086         struct mwl8k_cmd_pkt header;
2087         __u8 hw_rev;
2088         __u8 host_interface;
2089         __le16 num_mcaddrs;
2090         __u8 perm_addr[ETH_ALEN];
2091         __le16 region_code;
2092         __le32 fw_rev;
2093         __le32 ps_cookie;
2094         __le32 caps;
2095         __le32 rx_queue_ptr;
2096         __le32 num_tx_queues;
2097         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
2098         __le32 flags;
2099         __le32 num_tx_desc_per_queue;
2100         __le32 total_rxd;
2101 } __packed;
2102
2103 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
2104 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
2105 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
2106
2107 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2108 {
2109         struct mwl8k_priv *priv = hw->priv;
2110         struct mwl8k_cmd_set_hw_spec *cmd;
2111         int rc;
2112         int i;
2113
2114         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2115         if (cmd == NULL)
2116                 return -ENOMEM;
2117
2118         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2119         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2120
2121         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2122         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2123         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
2124         for (i = 0; i < MWL8K_TX_QUEUES; i++)
2125                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2126         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2127                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2128                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2129         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2130         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2131
2132         rc = mwl8k_post_cmd(hw, &cmd->header);
2133         kfree(cmd);
2134
2135         return rc;
2136 }
2137
2138 /*
2139  * CMD_MAC_MULTICAST_ADR.
2140  */
2141 struct mwl8k_cmd_mac_multicast_adr {
2142         struct mwl8k_cmd_pkt header;
2143         __le16 action;
2144         __le16 numaddr;
2145         __u8 addr[0][ETH_ALEN];
2146 };
2147
2148 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2149 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2150 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2151 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2152
2153 static struct mwl8k_cmd_pkt *
2154 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2155                               struct netdev_hw_addr_list *mc_list)
2156 {
2157         struct mwl8k_priv *priv = hw->priv;
2158         struct mwl8k_cmd_mac_multicast_adr *cmd;
2159         int size;
2160         int mc_count = 0;
2161
2162         if (mc_list)
2163                 mc_count = netdev_hw_addr_list_count(mc_list);
2164
2165         if (allmulti || mc_count > priv->num_mcaddrs) {
2166                 allmulti = 1;
2167                 mc_count = 0;
2168         }
2169
2170         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2171
2172         cmd = kzalloc(size, GFP_ATOMIC);
2173         if (cmd == NULL)
2174                 return NULL;
2175
2176         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2177         cmd->header.length = cpu_to_le16(size);
2178         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2179                                   MWL8K_ENABLE_RX_BROADCAST);
2180
2181         if (allmulti) {
2182                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2183         } else if (mc_count) {
2184                 struct netdev_hw_addr *ha;
2185                 int i = 0;
2186
2187                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2188                 cmd->numaddr = cpu_to_le16(mc_count);
2189                 netdev_hw_addr_list_for_each(ha, mc_list) {
2190                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2191                 }
2192         }
2193
2194         return &cmd->header;
2195 }
2196
2197 /*
2198  * CMD_GET_STAT.
2199  */
2200 struct mwl8k_cmd_get_stat {
2201         struct mwl8k_cmd_pkt header;
2202         __le32 stats[64];
2203 } __packed;
2204
2205 #define MWL8K_STAT_ACK_FAILURE  9
2206 #define MWL8K_STAT_RTS_FAILURE  12
2207 #define MWL8K_STAT_FCS_ERROR    24
2208 #define MWL8K_STAT_RTS_SUCCESS  11
2209
2210 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2211                               struct ieee80211_low_level_stats *stats)
2212 {
2213         struct mwl8k_cmd_get_stat *cmd;
2214         int rc;
2215
2216         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2217         if (cmd == NULL)
2218                 return -ENOMEM;
2219
2220         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2221         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2222
2223         rc = mwl8k_post_cmd(hw, &cmd->header);
2224         if (!rc) {
2225                 stats->dot11ACKFailureCount =
2226                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2227                 stats->dot11RTSFailureCount =
2228                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2229                 stats->dot11FCSErrorCount =
2230                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2231                 stats->dot11RTSSuccessCount =
2232                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2233         }
2234         kfree(cmd);
2235
2236         return rc;
2237 }
2238
2239 /*
2240  * CMD_RADIO_CONTROL.
2241  */
2242 struct mwl8k_cmd_radio_control {
2243         struct mwl8k_cmd_pkt header;
2244         __le16 action;
2245         __le16 control;
2246         __le16 radio_on;
2247 } __packed;
2248
2249 static int
2250 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2251 {
2252         struct mwl8k_priv *priv = hw->priv;
2253         struct mwl8k_cmd_radio_control *cmd;
2254         int rc;
2255
2256         if (enable == priv->radio_on && !force)
2257                 return 0;
2258
2259         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2260         if (cmd == NULL)
2261                 return -ENOMEM;
2262
2263         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2264         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2265         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2266         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2267         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2268
2269         rc = mwl8k_post_cmd(hw, &cmd->header);
2270         kfree(cmd);
2271
2272         if (!rc)
2273                 priv->radio_on = enable;
2274
2275         return rc;
2276 }
2277
2278 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2279 {
2280         return mwl8k_cmd_radio_control(hw, 0, 0);
2281 }
2282
2283 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2284 {
2285         return mwl8k_cmd_radio_control(hw, 1, 0);
2286 }
2287
2288 static int
2289 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2290 {
2291         struct mwl8k_priv *priv = hw->priv;
2292
2293         priv->radio_short_preamble = short_preamble;
2294
2295         return mwl8k_cmd_radio_control(hw, 1, 1);
2296 }
2297
2298 /*
2299  * CMD_RF_TX_POWER.
2300  */
2301 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2302
2303 struct mwl8k_cmd_rf_tx_power {
2304         struct mwl8k_cmd_pkt header;
2305         __le16 action;
2306         __le16 support_level;
2307         __le16 current_level;
2308         __le16 reserved;
2309         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2310 } __packed;
2311
2312 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2313 {
2314         struct mwl8k_cmd_rf_tx_power *cmd;
2315         int rc;
2316
2317         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2318         if (cmd == NULL)
2319                 return -ENOMEM;
2320
2321         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2322         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2323         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2324         cmd->support_level = cpu_to_le16(dBm);
2325
2326         rc = mwl8k_post_cmd(hw, &cmd->header);
2327         kfree(cmd);
2328
2329         return rc;
2330 }
2331
2332 /*
2333  * CMD_TX_POWER.
2334  */
2335 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2336
2337 struct mwl8k_cmd_tx_power {
2338         struct mwl8k_cmd_pkt header;
2339         __le16 action;
2340         __le16 band;
2341         __le16 channel;
2342         __le16 bw;
2343         __le16 sub_ch;
2344         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2345 } __attribute__((packed));
2346
2347 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2348                                      struct ieee80211_conf *conf,
2349                                      unsigned short pwr)
2350 {
2351         struct ieee80211_channel *channel = conf->channel;
2352         struct mwl8k_cmd_tx_power *cmd;
2353         int rc;
2354         int i;
2355
2356         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2357         if (cmd == NULL)
2358                 return -ENOMEM;
2359
2360         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2361         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2362         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2363
2364         if (channel->band == IEEE80211_BAND_2GHZ)
2365                 cmd->band = cpu_to_le16(0x1);
2366         else if (channel->band == IEEE80211_BAND_5GHZ)
2367                 cmd->band = cpu_to_le16(0x4);
2368
2369         cmd->channel = channel->hw_value;
2370
2371         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2372             conf->channel_type == NL80211_CHAN_HT20) {
2373                 cmd->bw = cpu_to_le16(0x2);
2374         } else {
2375                 cmd->bw = cpu_to_le16(0x4);
2376                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2377                         cmd->sub_ch = cpu_to_le16(0x3);
2378                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2379                         cmd->sub_ch = cpu_to_le16(0x1);
2380         }
2381
2382         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2383                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2384
2385         rc = mwl8k_post_cmd(hw, &cmd->header);
2386         kfree(cmd);
2387
2388         return rc;
2389 }
2390
2391 /*
2392  * CMD_RF_ANTENNA.
2393  */
2394 struct mwl8k_cmd_rf_antenna {
2395         struct mwl8k_cmd_pkt header;
2396         __le16 antenna;
2397         __le16 mode;
2398 } __packed;
2399
2400 #define MWL8K_RF_ANTENNA_RX             1
2401 #define MWL8K_RF_ANTENNA_TX             2
2402
2403 static int
2404 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2405 {
2406         struct mwl8k_cmd_rf_antenna *cmd;
2407         int rc;
2408
2409         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2410         if (cmd == NULL)
2411                 return -ENOMEM;
2412
2413         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2414         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2415         cmd->antenna = cpu_to_le16(antenna);
2416         cmd->mode = cpu_to_le16(mask);
2417
2418         rc = mwl8k_post_cmd(hw, &cmd->header);
2419         kfree(cmd);
2420
2421         return rc;
2422 }
2423
2424 /*
2425  * CMD_SET_BEACON.
2426  */
2427 struct mwl8k_cmd_set_beacon {
2428         struct mwl8k_cmd_pkt header;
2429         __le16 beacon_len;
2430         __u8 beacon[0];
2431 };
2432
2433 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2434                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2435 {
2436         struct mwl8k_cmd_set_beacon *cmd;
2437         int rc;
2438
2439         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2440         if (cmd == NULL)
2441                 return -ENOMEM;
2442
2443         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2444         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2445         cmd->beacon_len = cpu_to_le16(len);
2446         memcpy(cmd->beacon, beacon, len);
2447
2448         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2449         kfree(cmd);
2450
2451         return rc;
2452 }
2453
2454 /*
2455  * CMD_SET_PRE_SCAN.
2456  */
2457 struct mwl8k_cmd_set_pre_scan {
2458         struct mwl8k_cmd_pkt header;
2459 } __packed;
2460
2461 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2462 {
2463         struct mwl8k_cmd_set_pre_scan *cmd;
2464         int rc;
2465
2466         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2467         if (cmd == NULL)
2468                 return -ENOMEM;
2469
2470         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2471         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2472
2473         rc = mwl8k_post_cmd(hw, &cmd->header);
2474         kfree(cmd);
2475
2476         return rc;
2477 }
2478
2479 /*
2480  * CMD_SET_POST_SCAN.
2481  */
2482 struct mwl8k_cmd_set_post_scan {
2483         struct mwl8k_cmd_pkt header;
2484         __le32 isibss;
2485         __u8 bssid[ETH_ALEN];
2486 } __packed;
2487
2488 static int
2489 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2490 {
2491         struct mwl8k_cmd_set_post_scan *cmd;
2492         int rc;
2493
2494         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2495         if (cmd == NULL)
2496                 return -ENOMEM;
2497
2498         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2499         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2500         cmd->isibss = 0;
2501         memcpy(cmd->bssid, mac, ETH_ALEN);
2502
2503         rc = mwl8k_post_cmd(hw, &cmd->header);
2504         kfree(cmd);
2505
2506         return rc;
2507 }
2508
2509 /*
2510  * CMD_SET_RF_CHANNEL.
2511  */
2512 struct mwl8k_cmd_set_rf_channel {
2513         struct mwl8k_cmd_pkt header;
2514         __le16 action;
2515         __u8 current_channel;
2516         __le32 channel_flags;
2517 } __packed;
2518
2519 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2520                                     struct ieee80211_conf *conf)
2521 {
2522         struct ieee80211_channel *channel = conf->channel;
2523         struct mwl8k_cmd_set_rf_channel *cmd;
2524         int rc;
2525
2526         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2527         if (cmd == NULL)
2528                 return -ENOMEM;
2529
2530         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2531         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2532         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2533         cmd->current_channel = channel->hw_value;
2534
2535         if (channel->band == IEEE80211_BAND_2GHZ)
2536                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2537         else if (channel->band == IEEE80211_BAND_5GHZ)
2538                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2539
2540         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2541             conf->channel_type == NL80211_CHAN_HT20)
2542                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2543         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2544                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2545         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2546                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2547
2548         rc = mwl8k_post_cmd(hw, &cmd->header);
2549         kfree(cmd);
2550
2551         return rc;
2552 }
2553
2554 /*
2555  * CMD_SET_AID.
2556  */
2557 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2558 #define MWL8K_FRAME_PROT_11G                            0x07
2559 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2560 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2561
2562 struct mwl8k_cmd_update_set_aid {
2563         struct  mwl8k_cmd_pkt header;
2564         __le16  aid;
2565
2566          /* AP's MAC address (BSSID) */
2567         __u8    bssid[ETH_ALEN];
2568         __le16  protection_mode;
2569         __u8    supp_rates[14];
2570 } __packed;
2571
2572 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2573 {
2574         int i;
2575         int j;
2576
2577         /*
2578          * Clear nonstandard rates 4 and 13.
2579          */
2580         mask &= 0x1fef;
2581
2582         for (i = 0, j = 0; i < 14; i++) {
2583                 if (mask & (1 << i))
2584                         rates[j++] = mwl8k_rates_24[i].hw_value;
2585         }
2586 }
2587
2588 static int
2589 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2590                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2591 {
2592         struct mwl8k_cmd_update_set_aid *cmd;
2593         u16 prot_mode;
2594         int rc;
2595
2596         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2597         if (cmd == NULL)
2598                 return -ENOMEM;
2599
2600         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2601         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2602         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2603         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2604
2605         if (vif->bss_conf.use_cts_prot) {
2606                 prot_mode = MWL8K_FRAME_PROT_11G;
2607         } else {
2608                 switch (vif->bss_conf.ht_operation_mode &
2609                         IEEE80211_HT_OP_MODE_PROTECTION) {
2610                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2611                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2612                         break;
2613                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2614                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2615                         break;
2616                 default:
2617                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2618                         break;
2619                 }
2620         }
2621         cmd->protection_mode = cpu_to_le16(prot_mode);
2622
2623         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2624
2625         rc = mwl8k_post_cmd(hw, &cmd->header);
2626         kfree(cmd);
2627
2628         return rc;
2629 }
2630
2631 /*
2632  * CMD_SET_RATE.
2633  */
2634 struct mwl8k_cmd_set_rate {
2635         struct  mwl8k_cmd_pkt header;
2636         __u8    legacy_rates[14];
2637
2638         /* Bitmap for supported MCS codes.  */
2639         __u8    mcs_set[16];
2640         __u8    reserved[16];
2641 } __packed;
2642
2643 static int
2644 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2645                    u32 legacy_rate_mask, u8 *mcs_rates)
2646 {
2647         struct mwl8k_cmd_set_rate *cmd;
2648         int rc;
2649
2650         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2651         if (cmd == NULL)
2652                 return -ENOMEM;
2653
2654         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2655         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2656         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2657         memcpy(cmd->mcs_set, mcs_rates, 16);
2658
2659         rc = mwl8k_post_cmd(hw, &cmd->header);
2660         kfree(cmd);
2661
2662         return rc;
2663 }
2664
2665 /*
2666  * CMD_FINALIZE_JOIN.
2667  */
2668 #define MWL8K_FJ_BEACON_MAXLEN  128
2669
2670 struct mwl8k_cmd_finalize_join {
2671         struct mwl8k_cmd_pkt header;
2672         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2673         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2674 } __packed;
2675
2676 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2677                                    int framelen, int dtim)
2678 {
2679         struct mwl8k_cmd_finalize_join *cmd;
2680         struct ieee80211_mgmt *payload = frame;
2681         int payload_len;
2682         int rc;
2683
2684         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2685         if (cmd == NULL)
2686                 return -ENOMEM;
2687
2688         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2689         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2690         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2691
2692         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2693         if (payload_len < 0)
2694                 payload_len = 0;
2695         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2696                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2697
2698         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2699
2700         rc = mwl8k_post_cmd(hw, &cmd->header);
2701         kfree(cmd);
2702
2703         return rc;
2704 }
2705
2706 /*
2707  * CMD_SET_RTS_THRESHOLD.
2708  */
2709 struct mwl8k_cmd_set_rts_threshold {
2710         struct mwl8k_cmd_pkt header;
2711         __le16 action;
2712         __le16 threshold;
2713 } __packed;
2714
2715 static int
2716 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2717 {
2718         struct mwl8k_cmd_set_rts_threshold *cmd;
2719         int rc;
2720
2721         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2722         if (cmd == NULL)
2723                 return -ENOMEM;
2724
2725         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2726         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2727         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2728         cmd->threshold = cpu_to_le16(rts_thresh);
2729
2730         rc = mwl8k_post_cmd(hw, &cmd->header);
2731         kfree(cmd);
2732
2733         return rc;
2734 }
2735
2736 /*
2737  * CMD_SET_SLOT.
2738  */
2739 struct mwl8k_cmd_set_slot {
2740         struct mwl8k_cmd_pkt header;
2741         __le16 action;
2742         __u8 short_slot;
2743 } __packed;
2744
2745 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2746 {
2747         struct mwl8k_cmd_set_slot *cmd;
2748         int rc;
2749
2750         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2751         if (cmd == NULL)
2752                 return -ENOMEM;
2753
2754         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2755         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2756         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2757         cmd->short_slot = short_slot_time;
2758
2759         rc = mwl8k_post_cmd(hw, &cmd->header);
2760         kfree(cmd);
2761
2762         return rc;
2763 }
2764
2765 /*
2766  * CMD_SET_EDCA_PARAMS.
2767  */
2768 struct mwl8k_cmd_set_edca_params {
2769         struct mwl8k_cmd_pkt header;
2770
2771         /* See MWL8K_SET_EDCA_XXX below */
2772         __le16 action;
2773
2774         /* TX opportunity in units of 32 us */
2775         __le16 txop;
2776
2777         union {
2778                 struct {
2779                         /* Log exponent of max contention period: 0...15 */
2780                         __le32 log_cw_max;
2781
2782                         /* Log exponent of min contention period: 0...15 */
2783                         __le32 log_cw_min;
2784
2785                         /* Adaptive interframe spacing in units of 32us */
2786                         __u8 aifs;
2787
2788                         /* TX queue to configure */
2789                         __u8 txq;
2790                 } ap;
2791                 struct {
2792                         /* Log exponent of max contention period: 0...15 */
2793                         __u8 log_cw_max;
2794
2795                         /* Log exponent of min contention period: 0...15 */
2796                         __u8 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                 } sta;
2804         };
2805 } __packed;
2806
2807 #define MWL8K_SET_EDCA_CW       0x01
2808 #define MWL8K_SET_EDCA_TXOP     0x02
2809 #define MWL8K_SET_EDCA_AIFS     0x04
2810
2811 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2812                                  MWL8K_SET_EDCA_TXOP | \
2813                                  MWL8K_SET_EDCA_AIFS)
2814
2815 static int
2816 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2817                           __u16 cw_min, __u16 cw_max,
2818                           __u8 aifs, __u16 txop)
2819 {
2820         struct mwl8k_priv *priv = hw->priv;
2821         struct mwl8k_cmd_set_edca_params *cmd;
2822         int rc;
2823
2824         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2825         if (cmd == NULL)
2826                 return -ENOMEM;
2827
2828         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2829         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2830         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2831         cmd->txop = cpu_to_le16(txop);
2832         if (priv->ap_fw) {
2833                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2834                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2835                 cmd->ap.aifs = aifs;
2836                 cmd->ap.txq = qnum;
2837         } else {
2838                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2839                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2840                 cmd->sta.aifs = aifs;
2841                 cmd->sta.txq = qnum;
2842         }
2843
2844         rc = mwl8k_post_cmd(hw, &cmd->header);
2845         kfree(cmd);
2846
2847         return rc;
2848 }
2849
2850 /*
2851  * CMD_SET_WMM_MODE.
2852  */
2853 struct mwl8k_cmd_set_wmm_mode {
2854         struct mwl8k_cmd_pkt header;
2855         __le16 action;
2856 } __packed;
2857
2858 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2859 {
2860         struct mwl8k_priv *priv = hw->priv;
2861         struct mwl8k_cmd_set_wmm_mode *cmd;
2862         int rc;
2863
2864         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2865         if (cmd == NULL)
2866                 return -ENOMEM;
2867
2868         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2869         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2870         cmd->action = cpu_to_le16(!!enable);
2871
2872         rc = mwl8k_post_cmd(hw, &cmd->header);
2873         kfree(cmd);
2874
2875         if (!rc)
2876                 priv->wmm_enabled = enable;
2877
2878         return rc;
2879 }
2880
2881 /*
2882  * CMD_MIMO_CONFIG.
2883  */
2884 struct mwl8k_cmd_mimo_config {
2885         struct mwl8k_cmd_pkt header;
2886         __le32 action;
2887         __u8 rx_antenna_map;
2888         __u8 tx_antenna_map;
2889 } __packed;
2890
2891 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2892 {
2893         struct mwl8k_cmd_mimo_config *cmd;
2894         int rc;
2895
2896         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2897         if (cmd == NULL)
2898                 return -ENOMEM;
2899
2900         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2901         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2902         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2903         cmd->rx_antenna_map = rx;
2904         cmd->tx_antenna_map = tx;
2905
2906         rc = mwl8k_post_cmd(hw, &cmd->header);
2907         kfree(cmd);
2908
2909         return rc;
2910 }
2911
2912 /*
2913  * CMD_USE_FIXED_RATE (STA version).
2914  */
2915 struct mwl8k_cmd_use_fixed_rate_sta {
2916         struct mwl8k_cmd_pkt header;
2917         __le32 action;
2918         __le32 allow_rate_drop;
2919         __le32 num_rates;
2920         struct {
2921                 __le32 is_ht_rate;
2922                 __le32 enable_retry;
2923                 __le32 rate;
2924                 __le32 retry_count;
2925         } rate_entry[8];
2926         __le32 rate_type;
2927         __le32 reserved1;
2928         __le32 reserved2;
2929 } __packed;
2930
2931 #define MWL8K_USE_AUTO_RATE     0x0002
2932 #define MWL8K_UCAST_RATE        0
2933
2934 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2935 {
2936         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2937         int rc;
2938
2939         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2940         if (cmd == NULL)
2941                 return -ENOMEM;
2942
2943         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2944         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2945         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2946         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2947
2948         rc = mwl8k_post_cmd(hw, &cmd->header);
2949         kfree(cmd);
2950
2951         return rc;
2952 }
2953
2954 /*
2955  * CMD_USE_FIXED_RATE (AP version).
2956  */
2957 struct mwl8k_cmd_use_fixed_rate_ap {
2958         struct mwl8k_cmd_pkt header;
2959         __le32 action;
2960         __le32 allow_rate_drop;
2961         __le32 num_rates;
2962         struct mwl8k_rate_entry_ap {
2963                 __le32 is_ht_rate;
2964                 __le32 enable_retry;
2965                 __le32 rate;
2966                 __le32 retry_count;
2967         } rate_entry[4];
2968         u8 multicast_rate;
2969         u8 multicast_rate_type;
2970         u8 management_rate;
2971 } __packed;
2972
2973 static int
2974 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2975 {
2976         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2977         int rc;
2978
2979         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2980         if (cmd == NULL)
2981                 return -ENOMEM;
2982
2983         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2984         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2985         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2986         cmd->multicast_rate = mcast;
2987         cmd->management_rate = mgmt;
2988
2989         rc = mwl8k_post_cmd(hw, &cmd->header);
2990         kfree(cmd);
2991
2992         return rc;
2993 }
2994
2995 /*
2996  * CMD_ENABLE_SNIFFER.
2997  */
2998 struct mwl8k_cmd_enable_sniffer {
2999         struct mwl8k_cmd_pkt header;
3000         __le32 action;
3001 } __packed;
3002
3003 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3004 {
3005         struct mwl8k_cmd_enable_sniffer *cmd;
3006         int rc;
3007
3008         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3009         if (cmd == NULL)
3010                 return -ENOMEM;
3011
3012         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3013         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3014         cmd->action = cpu_to_le32(!!enable);
3015
3016         rc = mwl8k_post_cmd(hw, &cmd->header);
3017         kfree(cmd);
3018
3019         return rc;
3020 }
3021
3022 /*
3023  * CMD_SET_MAC_ADDR.
3024  */
3025 struct mwl8k_cmd_set_mac_addr {
3026         struct mwl8k_cmd_pkt header;
3027         union {
3028                 struct {
3029                         __le16 mac_type;
3030                         __u8 mac_addr[ETH_ALEN];
3031                 } mbss;
3032                 __u8 mac_addr[ETH_ALEN];
3033         };
3034 } __packed;
3035
3036 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
3037 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
3038 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
3039 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
3040
3041 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3042                                   struct ieee80211_vif *vif, u8 *mac)
3043 {
3044         struct mwl8k_priv *priv = hw->priv;
3045         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3046         struct mwl8k_cmd_set_mac_addr *cmd;
3047         int mac_type;
3048         int rc;
3049
3050         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3051         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3052                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3053                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3054                 else
3055                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3056         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3057                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3058                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3059                 else
3060                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3061         }
3062
3063         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3064         if (cmd == NULL)
3065                 return -ENOMEM;
3066
3067         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3068         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3069         if (priv->ap_fw) {
3070                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3071                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3072         } else {
3073                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3074         }
3075
3076         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3077         kfree(cmd);
3078
3079         return rc;
3080 }
3081
3082 /*
3083  * CMD_SET_RATEADAPT_MODE.
3084  */
3085 struct mwl8k_cmd_set_rate_adapt_mode {
3086         struct mwl8k_cmd_pkt header;
3087         __le16 action;
3088         __le16 mode;
3089 } __packed;
3090
3091 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3092 {
3093         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3094         int rc;
3095
3096         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3097         if (cmd == NULL)
3098                 return -ENOMEM;
3099
3100         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3101         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3102         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3103         cmd->mode = cpu_to_le16(mode);
3104
3105         rc = mwl8k_post_cmd(hw, &cmd->header);
3106         kfree(cmd);
3107
3108         return rc;
3109 }
3110
3111 /*
3112  * CMD_BSS_START.
3113  */
3114 struct mwl8k_cmd_bss_start {
3115         struct mwl8k_cmd_pkt header;
3116         __le32 enable;
3117 } __packed;
3118
3119 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3120                                struct ieee80211_vif *vif, int enable)
3121 {
3122         struct mwl8k_cmd_bss_start *cmd;
3123         int rc;
3124
3125         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3126         if (cmd == NULL)
3127                 return -ENOMEM;
3128
3129         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3130         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3131         cmd->enable = cpu_to_le32(enable);
3132
3133         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3134         kfree(cmd);
3135
3136         return rc;
3137 }
3138
3139 /*
3140  * CMD_SET_NEW_STN.
3141  */
3142 struct mwl8k_cmd_set_new_stn {
3143         struct mwl8k_cmd_pkt header;
3144         __le16 aid;
3145         __u8 mac_addr[6];
3146         __le16 stn_id;
3147         __le16 action;
3148         __le16 rsvd;
3149         __le32 legacy_rates;
3150         __u8 ht_rates[4];
3151         __le16 cap_info;
3152         __le16 ht_capabilities_info;
3153         __u8 mac_ht_param_info;
3154         __u8 rev;
3155         __u8 control_channel;
3156         __u8 add_channel;
3157         __le16 op_mode;
3158         __le16 stbc;
3159         __u8 add_qos_info;
3160         __u8 is_qos_sta;
3161         __le32 fw_sta_ptr;
3162 } __packed;
3163
3164 #define MWL8K_STA_ACTION_ADD            0
3165 #define MWL8K_STA_ACTION_REMOVE         2
3166
3167 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3168                                      struct ieee80211_vif *vif,
3169                                      struct ieee80211_sta *sta)
3170 {
3171         struct mwl8k_cmd_set_new_stn *cmd;
3172         u32 rates;
3173         int rc;
3174
3175         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3176         if (cmd == NULL)
3177                 return -ENOMEM;
3178
3179         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3180         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3181         cmd->aid = cpu_to_le16(sta->aid);
3182         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3183         cmd->stn_id = cpu_to_le16(sta->aid);
3184         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3185         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3186                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3187         else
3188                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3189         cmd->legacy_rates = cpu_to_le32(rates);
3190         if (sta->ht_cap.ht_supported) {
3191                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3192                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3193                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3194                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3195                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3196                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3197                         ((sta->ht_cap.ampdu_density & 7) << 2);
3198                 cmd->is_qos_sta = 1;
3199         }
3200
3201         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3202         kfree(cmd);
3203
3204         return rc;
3205 }
3206
3207 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3208                                           struct ieee80211_vif *vif)
3209 {
3210         struct mwl8k_cmd_set_new_stn *cmd;
3211         int rc;
3212
3213         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3214         if (cmd == NULL)
3215                 return -ENOMEM;
3216
3217         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3218         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3219         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3220
3221         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3222         kfree(cmd);
3223
3224         return rc;
3225 }
3226
3227 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3228                                      struct ieee80211_vif *vif, u8 *addr)
3229 {
3230         struct mwl8k_cmd_set_new_stn *cmd;
3231         int rc;
3232
3233         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3234         if (cmd == NULL)
3235                 return -ENOMEM;
3236
3237         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3238         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3239         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3240         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3241
3242         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3243         kfree(cmd);
3244
3245         return rc;
3246 }
3247
3248 /*
3249  * CMD_UPDATE_ENCRYPTION.
3250  */
3251
3252 #define MAX_ENCR_KEY_LENGTH     16
3253 #define MIC_KEY_LENGTH          8
3254
3255 struct mwl8k_cmd_update_encryption {
3256         struct mwl8k_cmd_pkt header;
3257
3258         __le32 action;
3259         __le32 reserved;
3260         __u8 mac_addr[6];
3261         __u8 encr_type;
3262
3263 } __attribute__((packed));
3264
3265 struct mwl8k_cmd_set_key {
3266         struct mwl8k_cmd_pkt header;
3267
3268         __le32 action;
3269         __le32 reserved;
3270         __le16 length;
3271         __le16 key_type_id;
3272         __le32 key_info;
3273         __le32 key_id;
3274         __le16 key_len;
3275         __u8 key_material[MAX_ENCR_KEY_LENGTH];
3276         __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3277         __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3278         __le16 tkip_rsc_low;
3279         __le32 tkip_rsc_high;
3280         __le16 tkip_tsc_low;
3281         __le32 tkip_tsc_high;
3282         __u8 mac_addr[6];
3283 } __attribute__((packed));
3284
3285 enum {
3286         MWL8K_ENCR_ENABLE,
3287         MWL8K_ENCR_SET_KEY,
3288         MWL8K_ENCR_REMOVE_KEY,
3289         MWL8K_ENCR_SET_GROUP_KEY,
3290 };
3291
3292 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP        0
3293 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE    1
3294 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP       4
3295 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED      7
3296 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES        8
3297
3298 enum {
3299         MWL8K_ALG_WEP,
3300         MWL8K_ALG_TKIP,
3301         MWL8K_ALG_CCMP,
3302 };
3303
3304 #define MWL8K_KEY_FLAG_TXGROUPKEY       0x00000004
3305 #define MWL8K_KEY_FLAG_PAIRWISE         0x00000008
3306 #define MWL8K_KEY_FLAG_TSC_VALID        0x00000040
3307 #define MWL8K_KEY_FLAG_WEP_TXKEY        0x01000000
3308 #define MWL8K_KEY_FLAG_MICKEY_VALID     0x02000000
3309
3310 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3311                                               struct ieee80211_vif *vif,
3312                                               u8 *addr,
3313                                               u8 encr_type)
3314 {
3315         struct mwl8k_cmd_update_encryption *cmd;
3316         int rc;
3317
3318         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3319         if (cmd == NULL)
3320                 return -ENOMEM;
3321
3322         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3323         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3324         cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3325         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3326         cmd->encr_type = encr_type;
3327
3328         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3329         kfree(cmd);
3330
3331         return rc;
3332 }
3333
3334 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3335                                                 u8 *addr,
3336                                                 struct ieee80211_key_conf *key)
3337 {
3338         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3339         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3340         cmd->length = cpu_to_le16(sizeof(*cmd) -
3341                                 offsetof(struct mwl8k_cmd_set_key, length));
3342         cmd->key_id = cpu_to_le32(key->keyidx);
3343         cmd->key_len = cpu_to_le16(key->keylen);
3344         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3345
3346         switch (key->cipher) {
3347         case WLAN_CIPHER_SUITE_WEP40:
3348         case WLAN_CIPHER_SUITE_WEP104:
3349                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3350                 if (key->keyidx == 0)
3351                         cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3352
3353                 break;
3354         case WLAN_CIPHER_SUITE_TKIP:
3355                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3356                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3357                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3358                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3359                 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3360                                                 | MWL8K_KEY_FLAG_TSC_VALID);
3361                 break;
3362         case WLAN_CIPHER_SUITE_CCMP:
3363                 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3364                 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3365                         ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3366                         : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3367                 break;
3368         default:
3369                 return -ENOTSUPP;
3370         }
3371
3372         return 0;
3373 }
3374
3375 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3376                                                 struct ieee80211_vif *vif,
3377                                                 u8 *addr,
3378                                                 struct ieee80211_key_conf *key)
3379 {
3380         struct mwl8k_cmd_set_key *cmd;
3381         int rc;
3382         int keymlen;
3383         u32 action;
3384         u8 idx;
3385         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3386
3387         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3388         if (cmd == NULL)
3389                 return -ENOMEM;
3390
3391         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3392         if (rc < 0)
3393                 goto done;
3394
3395         idx = key->keyidx;
3396
3397         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3398                 action = MWL8K_ENCR_SET_KEY;
3399         else
3400                 action = MWL8K_ENCR_SET_GROUP_KEY;
3401
3402         switch (key->cipher) {
3403         case WLAN_CIPHER_SUITE_WEP40:
3404         case WLAN_CIPHER_SUITE_WEP104:
3405                 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3406                         memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3407                                                 sizeof(*key) + key->keylen);
3408                         mwl8k_vif->wep_key_conf[idx].enabled = 1;
3409                 }
3410
3411                 keymlen = 0;
3412                 action = MWL8K_ENCR_SET_KEY;
3413                 break;
3414         case WLAN_CIPHER_SUITE_TKIP:
3415                 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3416                 break;
3417         case WLAN_CIPHER_SUITE_CCMP:
3418                 keymlen = key->keylen;
3419                 break;
3420         default:
3421                 rc = -ENOTSUPP;
3422                 goto done;
3423         }
3424
3425         memcpy(cmd->key_material, key->key, keymlen);
3426         cmd->action = cpu_to_le32(action);
3427
3428         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3429 done:
3430         kfree(cmd);
3431
3432         return rc;
3433 }
3434
3435 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3436                                                 struct ieee80211_vif *vif,
3437                                                 u8 *addr,
3438                                                 struct ieee80211_key_conf *key)
3439 {
3440         struct mwl8k_cmd_set_key *cmd;
3441         int rc;
3442         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3443
3444         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3445         if (cmd == NULL)
3446                 return -ENOMEM;
3447
3448         rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3449         if (rc < 0)
3450                 goto done;
3451
3452         if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3453                         WLAN_CIPHER_SUITE_WEP104)
3454                 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3455
3456         cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3457
3458         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3459 done:
3460         kfree(cmd);
3461
3462         return rc;
3463 }
3464
3465 static int mwl8k_set_key(struct ieee80211_hw *hw,
3466                          enum set_key_cmd cmd_param,
3467                          struct ieee80211_vif *vif,
3468                          struct ieee80211_sta *sta,
3469                          struct ieee80211_key_conf *key)
3470 {
3471         int rc = 0;
3472         u8 encr_type;
3473         u8 *addr;
3474         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3475
3476         if (vif->type == NL80211_IFTYPE_STATION)
3477                 return -EOPNOTSUPP;
3478
3479         if (sta == NULL)
3480                 addr = hw->wiphy->perm_addr;
3481         else
3482                 addr = sta->addr;
3483
3484         if (cmd_param == SET_KEY) {
3485                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3486                 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
3487                 if (rc)
3488                         goto out;
3489
3490                 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
3491                                 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
3492                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
3493                 else
3494                         encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
3495
3496                 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
3497                                                                 encr_type);
3498                 if (rc)
3499                         goto out;
3500
3501                 mwl8k_vif->is_hw_crypto_enabled = true;
3502
3503         } else {
3504                 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
3505
3506                 if (rc)
3507                         goto out;
3508
3509                 mwl8k_vif->is_hw_crypto_enabled = false;
3510
3511         }
3512 out:
3513         return rc;
3514 }
3515
3516 /*
3517  * CMD_UPDATE_STADB.
3518  */
3519 struct ewc_ht_info {
3520         __le16  control1;
3521         __le16  control2;
3522         __le16  control3;
3523 } __packed;
3524
3525 struct peer_capability_info {
3526         /* Peer type - AP vs. STA.  */
3527         __u8    peer_type;
3528
3529         /* Basic 802.11 capabilities from assoc resp.  */
3530         __le16  basic_caps;
3531
3532         /* Set if peer supports 802.11n high throughput (HT).  */
3533         __u8    ht_support;
3534
3535         /* Valid if HT is supported.  */
3536         __le16  ht_caps;
3537         __u8    extended_ht_caps;
3538         struct ewc_ht_info      ewc_info;
3539
3540         /* Legacy rate table. Intersection of our rates and peer rates.  */
3541         __u8    legacy_rates[12];
3542
3543         /* HT rate table. Intersection of our rates and peer rates.  */
3544         __u8    ht_rates[16];
3545         __u8    pad[16];
3546
3547         /* If set, interoperability mode, no proprietary extensions.  */
3548         __u8    interop;
3549         __u8    pad2;
3550         __u8    station_id;
3551         __le16  amsdu_enabled;
3552 } __packed;
3553
3554 struct mwl8k_cmd_update_stadb {
3555         struct mwl8k_cmd_pkt header;
3556
3557         /* See STADB_ACTION_TYPE */
3558         __le32  action;
3559
3560         /* Peer MAC address */
3561         __u8    peer_addr[ETH_ALEN];
3562
3563         __le32  reserved;
3564
3565         /* Peer info - valid during add/update.  */
3566         struct peer_capability_info     peer_info;
3567 } __packed;
3568
3569 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3570 #define MWL8K_STA_DB_DEL_ENTRY          2
3571
3572 /* Peer Entry flags - used to define the type of the peer node */
3573 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3574
3575 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3576                                       struct ieee80211_vif *vif,
3577                                       struct ieee80211_sta *sta)
3578 {
3579         struct mwl8k_cmd_update_stadb *cmd;
3580         struct peer_capability_info *p;
3581         u32 rates;
3582         int rc;
3583
3584         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3585         if (cmd == NULL)
3586                 return -ENOMEM;
3587
3588         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3589         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3590         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3591         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3592
3593         p = &cmd->peer_info;
3594         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3595         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3596         p->ht_support = sta->ht_cap.ht_supported;
3597         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3598         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3599                 ((sta->ht_cap.ampdu_density & 7) << 2);
3600         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3601                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3602         else
3603                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3604         legacy_rate_mask_to_array(p->legacy_rates, rates);
3605         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3606         p->interop = 1;
3607         p->amsdu_enabled = 0;
3608
3609         rc = mwl8k_post_cmd(hw, &cmd->header);
3610         kfree(cmd);
3611
3612         return rc ? rc : p->station_id;
3613 }
3614
3615 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3616                                       struct ieee80211_vif *vif, u8 *addr)
3617 {
3618         struct mwl8k_cmd_update_stadb *cmd;
3619         int rc;
3620
3621         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3622         if (cmd == NULL)
3623                 return -ENOMEM;
3624
3625         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3626         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3627         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3628         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3629
3630         rc = mwl8k_post_cmd(hw, &cmd->header);
3631         kfree(cmd);
3632
3633         return rc;
3634 }
3635
3636
3637 /*
3638  * Interrupt handling.
3639  */
3640 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3641 {
3642         struct ieee80211_hw *hw = dev_id;
3643         struct mwl8k_priv *priv = hw->priv;
3644         u32 status;
3645
3646         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3647         if (!status)
3648                 return IRQ_NONE;
3649
3650         if (status & MWL8K_A2H_INT_TX_DONE) {
3651                 status &= ~MWL8K_A2H_INT_TX_DONE;
3652                 tasklet_schedule(&priv->poll_tx_task);
3653         }
3654
3655         if (status & MWL8K_A2H_INT_RX_READY) {
3656                 status &= ~MWL8K_A2H_INT_RX_READY;
3657                 tasklet_schedule(&priv->poll_rx_task);
3658         }
3659
3660         if (status)
3661                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3662
3663         if (status & MWL8K_A2H_INT_OPC_DONE) {
3664                 if (priv->hostcmd_wait != NULL)
3665                         complete(priv->hostcmd_wait);
3666         }
3667
3668         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3669                 if (!mutex_is_locked(&priv->fw_mutex) &&
3670                     priv->radio_on && priv->pending_tx_pkts)
3671                         mwl8k_tx_start(priv);
3672         }
3673
3674         return IRQ_HANDLED;
3675 }
3676
3677 static void mwl8k_tx_poll(unsigned long data)
3678 {
3679         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3680         struct mwl8k_priv *priv = hw->priv;
3681         int limit;
3682         int i;
3683
3684         limit = 32;
3685
3686         spin_lock_bh(&priv->tx_lock);
3687
3688         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3689                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3690
3691         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3692                 complete(priv->tx_wait);
3693                 priv->tx_wait = NULL;
3694         }
3695
3696         spin_unlock_bh(&priv->tx_lock);
3697
3698         if (limit) {
3699                 writel(~MWL8K_A2H_INT_TX_DONE,
3700                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3701         } else {
3702                 tasklet_schedule(&priv->poll_tx_task);
3703         }
3704 }
3705
3706 static void mwl8k_rx_poll(unsigned long data)
3707 {
3708         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3709         struct mwl8k_priv *priv = hw->priv;
3710         int limit;
3711
3712         limit = 32;
3713         limit -= rxq_process(hw, 0, limit);
3714         limit -= rxq_refill(hw, 0, limit);
3715
3716         if (limit) {
3717                 writel(~MWL8K_A2H_INT_RX_READY,
3718                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3719         } else {
3720                 tasklet_schedule(&priv->poll_rx_task);
3721         }
3722 }
3723
3724
3725 /*
3726  * Core driver operations.
3727  */
3728 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3729 {
3730         struct mwl8k_priv *priv = hw->priv;
3731         int index = skb_get_queue_mapping(skb);
3732         int rc;
3733
3734         if (!priv->radio_on) {
3735                 wiphy_debug(hw->wiphy,
3736                             "dropped TX frame since radio disabled\n");
3737                 dev_kfree_skb(skb);
3738                 return NETDEV_TX_OK;
3739         }
3740
3741         rc = mwl8k_txq_xmit(hw, index, skb);
3742
3743         return rc;
3744 }
3745
3746 static int mwl8k_start(struct ieee80211_hw *hw)
3747 {
3748         struct mwl8k_priv *priv = hw->priv;
3749         int rc;
3750
3751         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3752                          IRQF_SHARED, MWL8K_NAME, hw);
3753         if (rc) {
3754                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3755                 return -EIO;
3756         }
3757
3758         /* Enable TX reclaim and RX tasklets.  */
3759         tasklet_enable(&priv->poll_tx_task);
3760         tasklet_enable(&priv->poll_rx_task);
3761
3762         /* Enable interrupts */
3763         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3764
3765         rc = mwl8k_fw_lock(hw);
3766         if (!rc) {
3767                 rc = mwl8k_cmd_radio_enable(hw);
3768
3769                 if (!priv->ap_fw) {
3770                         if (!rc)
3771                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3772
3773                         if (!rc)
3774                                 rc = mwl8k_cmd_set_pre_scan(hw);
3775
3776                         if (!rc)
3777                                 rc = mwl8k_cmd_set_post_scan(hw,
3778                                                 "\x00\x00\x00\x00\x00\x00");
3779                 }
3780
3781                 if (!rc)
3782                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3783
3784                 if (!rc)
3785                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3786
3787                 mwl8k_fw_unlock(hw);
3788         }
3789
3790         if (rc) {
3791                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3792                 free_irq(priv->pdev->irq, hw);
3793                 tasklet_disable(&priv->poll_tx_task);
3794                 tasklet_disable(&priv->poll_rx_task);
3795         }
3796
3797         return rc;
3798 }
3799
3800 static void mwl8k_stop(struct ieee80211_hw *hw)
3801 {
3802         struct mwl8k_priv *priv = hw->priv;
3803         int i;
3804
3805         mwl8k_cmd_radio_disable(hw);
3806
3807         ieee80211_stop_queues(hw);
3808
3809         /* Disable interrupts */
3810         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3811         free_irq(priv->pdev->irq, hw);
3812
3813         /* Stop finalize join worker */
3814         cancel_work_sync(&priv->finalize_join_worker);
3815         if (priv->beacon_skb != NULL)
3816                 dev_kfree_skb(priv->beacon_skb);
3817
3818         /* Stop TX reclaim and RX tasklets.  */
3819         tasklet_disable(&priv->poll_tx_task);
3820         tasklet_disable(&priv->poll_rx_task);
3821
3822         /* Return all skbs to mac80211 */
3823         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3824                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3825 }
3826
3827 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3828
3829 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3830                                struct ieee80211_vif *vif)
3831 {
3832         struct mwl8k_priv *priv = hw->priv;
3833         struct mwl8k_vif *mwl8k_vif;
3834         u32 macids_supported;
3835         int macid, rc;
3836         struct mwl8k_device_info *di;
3837
3838         /*
3839          * Reject interface creation if sniffer mode is active, as
3840          * STA operation is mutually exclusive with hardware sniffer
3841          * mode.  (Sniffer mode is only used on STA firmware.)
3842          */
3843         if (priv->sniffer_enabled) {
3844                 wiphy_info(hw->wiphy,
3845                            "unable to create STA interface because sniffer mode is enabled\n");
3846                 return -EINVAL;
3847         }
3848
3849         di = priv->device_info;
3850         switch (vif->type) {
3851         case NL80211_IFTYPE_AP:
3852                 if (!priv->ap_fw && di->fw_image_ap) {
3853                         /* we must load the ap fw to meet this request */
3854                         if (!list_empty(&priv->vif_list))
3855                                 return -EBUSY;
3856                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3857                         if (rc)
3858                                 return rc;
3859                 }
3860                 macids_supported = priv->ap_macids_supported;
3861                 break;
3862         case NL80211_IFTYPE_STATION:
3863                 if (priv->ap_fw && di->fw_image_sta) {
3864                         /* we must load the sta fw to meet this request */
3865                         if (!list_empty(&priv->vif_list))
3866                                 return -EBUSY;
3867                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3868                         if (rc)
3869                                 return rc;
3870                 }
3871                 macids_supported = priv->sta_macids_supported;
3872                 break;
3873         default:
3874                 return -EINVAL;
3875         }
3876
3877         macid = ffs(macids_supported & ~priv->macids_used);
3878         if (!macid--)
3879                 return -EBUSY;
3880
3881         /* Setup driver private area. */
3882         mwl8k_vif = MWL8K_VIF(vif);
3883         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3884         mwl8k_vif->vif = vif;
3885         mwl8k_vif->macid = macid;
3886         mwl8k_vif->seqno = 0;
3887         memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
3888         mwl8k_vif->is_hw_crypto_enabled = false;
3889
3890         /* Set the mac address.  */
3891         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3892
3893         if (priv->ap_fw)
3894                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3895
3896         priv->macids_used |= 1 << mwl8k_vif->macid;
3897         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3898
3899         return 0;
3900 }
3901
3902 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3903                                    struct ieee80211_vif *vif)
3904 {
3905         struct mwl8k_priv *priv = hw->priv;
3906         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3907
3908         if (priv->ap_fw)
3909                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3910
3911         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3912
3913         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3914         list_del(&mwl8k_vif->list);
3915 }
3916
3917 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3918 {
3919         struct ieee80211_conf *conf = &hw->conf;
3920         struct mwl8k_priv *priv = hw->priv;
3921         int rc;
3922
3923         if (conf->flags & IEEE80211_CONF_IDLE) {
3924                 mwl8k_cmd_radio_disable(hw);
3925                 return 0;
3926         }
3927
3928         rc = mwl8k_fw_lock(hw);
3929         if (rc)
3930                 return rc;
3931
3932         rc = mwl8k_cmd_radio_enable(hw);
3933         if (rc)
3934                 goto out;
3935
3936         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3937         if (rc)
3938                 goto out;
3939
3940         if (conf->power_level > 18)
3941                 conf->power_level = 18;
3942
3943         if (priv->ap_fw) {
3944                 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3945                 if (rc)
3946                         goto out;
3947
3948                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3949                 if (!rc)
3950                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3951         } else {
3952                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3953                 if (rc)
3954                         goto out;
3955                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3956         }
3957
3958 out:
3959         mwl8k_fw_unlock(hw);
3960
3961         return rc;
3962 }
3963
3964 static void
3965 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3966                            struct ieee80211_bss_conf *info, u32 changed)
3967 {
3968         struct mwl8k_priv *priv = hw->priv;
3969         u32 ap_legacy_rates;
3970         u8 ap_mcs_rates[16];
3971         int rc;
3972
3973         if (mwl8k_fw_lock(hw))
3974                 return;
3975
3976         /*
3977          * No need to capture a beacon if we're no longer associated.
3978          */
3979         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3980                 priv->capture_beacon = false;
3981
3982         /*
3983          * Get the AP's legacy and MCS rates.
3984          */
3985         if (vif->bss_conf.assoc) {
3986                 struct ieee80211_sta *ap;
3987
3988                 rcu_read_lock();
3989
3990                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3991                 if (ap == NULL) {
3992                         rcu_read_unlock();
3993                         goto out;
3994                 }
3995
3996                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3997                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3998                 } else {
3999                         ap_legacy_rates =
4000                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4001                 }
4002                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4003
4004                 rcu_read_unlock();
4005         }
4006
4007         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4008                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4009                 if (rc)
4010                         goto out;
4011
4012                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4013                 if (rc)
4014                         goto out;
4015         }
4016
4017         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4018                 rc = mwl8k_set_radio_preamble(hw,
4019                                 vif->bss_conf.use_short_preamble);
4020                 if (rc)
4021                         goto out;
4022         }
4023
4024         if (changed & BSS_CHANGED_ERP_SLOT) {
4025                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4026                 if (rc)
4027                         goto out;
4028         }
4029
4030         if (vif->bss_conf.assoc &&
4031             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4032                         BSS_CHANGED_HT))) {
4033                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4034                 if (rc)
4035                         goto out;
4036         }
4037
4038         if (vif->bss_conf.assoc &&
4039             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4040                 /*
4041                  * Finalize the join.  Tell rx handler to process
4042                  * next beacon from our BSSID.
4043                  */
4044                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4045                 priv->capture_beacon = true;
4046         }
4047
4048 out:
4049         mwl8k_fw_unlock(hw);
4050 }
4051
4052 static void
4053 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4054                           struct ieee80211_bss_conf *info, u32 changed)
4055 {
4056         int rc;
4057
4058         if (mwl8k_fw_lock(hw))
4059                 return;
4060
4061         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4062                 rc = mwl8k_set_radio_preamble(hw,
4063                                 vif->bss_conf.use_short_preamble);
4064                 if (rc)
4065                         goto out;
4066         }
4067
4068         if (changed & BSS_CHANGED_BASIC_RATES) {
4069                 int idx;
4070                 int rate;
4071
4072                 /*
4073                  * Use lowest supported basic rate for multicasts
4074                  * and management frames (such as probe responses --
4075                  * beacons will always go out at 1 Mb/s).
4076                  */
4077                 idx = ffs(vif->bss_conf.basic_rates);
4078                 if (idx)
4079                         idx--;
4080
4081                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4082                         rate = mwl8k_rates_24[idx].hw_value;
4083                 else
4084                         rate = mwl8k_rates_50[idx].hw_value;
4085
4086                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4087         }
4088
4089         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4090                 struct sk_buff *skb;
4091
4092                 skb = ieee80211_beacon_get(hw, vif);
4093                 if (skb != NULL) {
4094                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4095                         kfree_skb(skb);
4096                 }
4097         }
4098
4099         if (changed & BSS_CHANGED_BEACON_ENABLED)
4100                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4101
4102 out:
4103         mwl8k_fw_unlock(hw);
4104 }
4105
4106 static void
4107 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4108                        struct ieee80211_bss_conf *info, u32 changed)
4109 {
4110         struct mwl8k_priv *priv = hw->priv;
4111
4112         if (!priv->ap_fw)
4113                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4114         else
4115                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4116 }
4117
4118 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4119                                    struct netdev_hw_addr_list *mc_list)
4120 {
4121         struct mwl8k_cmd_pkt *cmd;
4122
4123         /*
4124          * Synthesize and return a command packet that programs the
4125          * hardware multicast address filter.  At this point we don't
4126          * know whether FIF_ALLMULTI is being requested, but if it is,
4127          * we'll end up throwing this packet away and creating a new
4128          * one in mwl8k_configure_filter().
4129          */
4130         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4131
4132         return (unsigned long)cmd;
4133 }
4134
4135 static int
4136 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4137                                unsigned int changed_flags,
4138                                unsigned int *total_flags)
4139 {
4140         struct mwl8k_priv *priv = hw->priv;
4141
4142         /*
4143          * Hardware sniffer mode is mutually exclusive with STA
4144          * operation, so refuse to enable sniffer mode if a STA
4145          * interface is active.
4146          */
4147         if (!list_empty(&priv->vif_list)) {
4148                 if (net_ratelimit())
4149                         wiphy_info(hw->wiphy,
4150                                    "not enabling sniffer mode because STA interface is active\n");
4151                 return 0;
4152         }
4153
4154         if (!priv->sniffer_enabled) {
4155                 if (mwl8k_cmd_enable_sniffer(hw, 1))
4156                         return 0;
4157                 priv->sniffer_enabled = true;
4158         }
4159
4160         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4161                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4162                         FIF_OTHER_BSS;
4163
4164         return 1;
4165 }
4166
4167 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4168 {
4169         if (!list_empty(&priv->vif_list))
4170                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4171
4172         return NULL;
4173 }
4174
4175 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4176                                    unsigned int changed_flags,
4177                                    unsigned int *total_flags,
4178                                    u64 multicast)
4179 {
4180         struct mwl8k_priv *priv = hw->priv;
4181         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4182
4183         /*
4184          * AP firmware doesn't allow fine-grained control over
4185          * the receive filter.
4186          */
4187         if (priv->ap_fw) {
4188                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4189                 kfree(cmd);
4190                 return;
4191         }
4192
4193         /*
4194          * Enable hardware sniffer mode if FIF_CONTROL or
4195          * FIF_OTHER_BSS is requested.
4196          */
4197         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4198             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4199                 kfree(cmd);
4200                 return;
4201         }
4202
4203         /* Clear unsupported feature flags */
4204         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4205
4206         if (mwl8k_fw_lock(hw)) {
4207                 kfree(cmd);
4208                 return;
4209         }
4210
4211         if (priv->sniffer_enabled) {
4212                 mwl8k_cmd_enable_sniffer(hw, 0);
4213                 priv->sniffer_enabled = false;
4214         }
4215
4216         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4217                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4218                         /*
4219                          * Disable the BSS filter.
4220                          */
4221                         mwl8k_cmd_set_pre_scan(hw);
4222                 } else {
4223                         struct mwl8k_vif *mwl8k_vif;
4224                         const u8 *bssid;
4225
4226                         /*
4227                          * Enable the BSS filter.
4228                          *
4229                          * If there is an active STA interface, use that
4230                          * interface's BSSID, otherwise use a dummy one
4231                          * (where the OUI part needs to be nonzero for
4232                          * the BSSID to be accepted by POST_SCAN).
4233                          */
4234                         mwl8k_vif = mwl8k_first_vif(priv);
4235                         if (mwl8k_vif != NULL)
4236                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
4237                         else
4238                                 bssid = "\x01\x00\x00\x00\x00\x00";
4239
4240                         mwl8k_cmd_set_post_scan(hw, bssid);
4241                 }
4242         }
4243
4244         /*
4245          * If FIF_ALLMULTI is being requested, throw away the command
4246          * packet that ->prepare_multicast() built and replace it with
4247          * a command packet that enables reception of all multicast
4248          * packets.
4249          */
4250         if (*total_flags & FIF_ALLMULTI) {
4251                 kfree(cmd);
4252                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4253         }
4254
4255         if (cmd != NULL) {
4256                 mwl8k_post_cmd(hw, cmd);
4257                 kfree(cmd);
4258         }
4259
4260         mwl8k_fw_unlock(hw);
4261 }
4262
4263 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4264 {
4265         return mwl8k_cmd_set_rts_threshold(hw, value);
4266 }
4267
4268 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4269                             struct ieee80211_vif *vif,
4270                             struct ieee80211_sta *sta)
4271 {
4272         struct mwl8k_priv *priv = hw->priv;
4273
4274         if (priv->ap_fw)
4275                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4276         else
4277                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4278 }
4279
4280 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4281                          struct ieee80211_vif *vif,
4282                          struct ieee80211_sta *sta)
4283 {
4284         struct mwl8k_priv *priv = hw->priv;
4285         int ret;
4286         int i;
4287         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4288         struct ieee80211_key_conf *key;
4289
4290         if (!priv->ap_fw) {
4291                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4292                 if (ret >= 0) {
4293                         MWL8K_STA(sta)->peer_id = ret;
4294                         ret = 0;
4295                 }
4296
4297         } else {
4298                 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4299         }
4300
4301         for (i = 0; i < NUM_WEP_KEYS; i++) {
4302                 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4303                 if (mwl8k_vif->wep_key_conf[i].enabled)
4304                         mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4305         }
4306         return ret;
4307 }
4308
4309 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4310                          const struct ieee80211_tx_queue_params *params)
4311 {
4312         struct mwl8k_priv *priv = hw->priv;
4313         int rc;
4314
4315         rc = mwl8k_fw_lock(hw);
4316         if (!rc) {
4317                 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
4318                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4319
4320                 if (!priv->wmm_enabled)
4321                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4322
4323                 if (!rc)
4324                         rc = mwl8k_cmd_set_edca_params(hw, queue,
4325                                                        params->cw_min,
4326                                                        params->cw_max,
4327                                                        params->aifs,
4328                                                        params->txop);
4329
4330                 mwl8k_fw_unlock(hw);
4331         }
4332
4333         return rc;
4334 }
4335
4336 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4337                            struct ieee80211_low_level_stats *stats)
4338 {
4339         return mwl8k_cmd_get_stat(hw, stats);
4340 }
4341
4342 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4343                                 struct survey_info *survey)
4344 {
4345         struct mwl8k_priv *priv = hw->priv;
4346         struct ieee80211_conf *conf = &hw->conf;
4347
4348         if (idx != 0)
4349                 return -ENOENT;
4350
4351         survey->channel = conf->channel;
4352         survey->filled = SURVEY_INFO_NOISE_DBM;
4353         survey->noise = priv->noise;
4354
4355         return 0;
4356 }
4357
4358 static int
4359 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4360                    enum ieee80211_ampdu_mlme_action action,
4361                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4362                    u8 buf_size)
4363 {
4364         switch (action) {
4365         case IEEE80211_AMPDU_RX_START:
4366         case IEEE80211_AMPDU_RX_STOP:
4367                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4368                         return -ENOTSUPP;
4369                 return 0;
4370         default:
4371                 return -ENOTSUPP;
4372         }
4373 }
4374
4375 static const struct ieee80211_ops mwl8k_ops = {
4376         .tx                     = mwl8k_tx,
4377         .start                  = mwl8k_start,
4378         .stop                   = mwl8k_stop,
4379         .add_interface          = mwl8k_add_interface,
4380         .remove_interface       = mwl8k_remove_interface,
4381         .config                 = mwl8k_config,
4382         .bss_info_changed       = mwl8k_bss_info_changed,
4383         .prepare_multicast      = mwl8k_prepare_multicast,
4384         .configure_filter       = mwl8k_configure_filter,
4385         .set_key                = mwl8k_set_key,
4386         .set_rts_threshold      = mwl8k_set_rts_threshold,
4387         .sta_add                = mwl8k_sta_add,
4388         .sta_remove             = mwl8k_sta_remove,
4389         .conf_tx                = mwl8k_conf_tx,
4390         .get_stats              = mwl8k_get_stats,
4391         .get_survey             = mwl8k_get_survey,
4392         .ampdu_action           = mwl8k_ampdu_action,
4393 };
4394
4395 static void mwl8k_finalize_join_worker(struct work_struct *work)
4396 {
4397         struct mwl8k_priv *priv =
4398                 container_of(work, struct mwl8k_priv, finalize_join_worker);
4399         struct sk_buff *skb = priv->beacon_skb;
4400         struct ieee80211_mgmt *mgmt = (void *)skb->data;
4401         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
4402         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
4403                                          mgmt->u.beacon.variable, len);
4404         int dtim_period = 1;
4405
4406         if (tim && tim[1] >= 2)
4407                 dtim_period = tim[3];
4408
4409         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
4410
4411         dev_kfree_skb(skb);
4412         priv->beacon_skb = NULL;
4413 }
4414
4415 enum {
4416         MWL8363 = 0,
4417         MWL8687,
4418         MWL8366,
4419 };
4420
4421 #define MWL8K_8366_AP_FW_API 1
4422 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
4423 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
4424
4425 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
4426         [MWL8363] = {
4427                 .part_name      = "88w8363",
4428                 .helper_image   = "mwl8k/helper_8363.fw",
4429                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
4430         },
4431         [MWL8687] = {
4432                 .part_name      = "88w8687",
4433                 .helper_image   = "mwl8k/helper_8687.fw",
4434                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
4435         },
4436         [MWL8366] = {
4437                 .part_name      = "88w8366",
4438                 .helper_image   = "mwl8k/helper_8366.fw",
4439                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
4440                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4441                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
4442                 .ap_rxd_ops     = &rxd_8366_ap_ops,
4443         },
4444 };
4445
4446 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4447 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4448 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4449 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4450 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4451 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4452 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4453
4454 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4455         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4456         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4457         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4458         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4459         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4460         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4461         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4462         { },
4463 };
4464 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4465
4466 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4467 {
4468         int rc;
4469         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4470                "Trying alternative firmware %s\n", pci_name(priv->pdev),
4471                priv->fw_pref, priv->fw_alt);
4472         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4473         if (rc) {
4474                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4475                        pci_name(priv->pdev), priv->fw_alt);
4476                 return rc;
4477         }
4478         return 0;
4479 }
4480
4481 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4482 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4483 {
4484         struct mwl8k_priv *priv = context;
4485         struct mwl8k_device_info *di = priv->device_info;
4486         int rc;
4487
4488         switch (priv->fw_state) {
4489         case FW_STATE_INIT:
4490                 if (!fw) {
4491                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4492                                pci_name(priv->pdev), di->helper_image);
4493                         goto fail;
4494                 }
4495                 priv->fw_helper = fw;
4496                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4497                                       true);
4498                 if (rc && priv->fw_alt) {
4499                         rc = mwl8k_request_alt_fw(priv);
4500                         if (rc)
4501                                 goto fail;
4502                         priv->fw_state = FW_STATE_LOADING_ALT;
4503                 } else if (rc)
4504                         goto fail;
4505                 else
4506                         priv->fw_state = FW_STATE_LOADING_PREF;
4507                 break;
4508
4509         case FW_STATE_LOADING_PREF:
4510                 if (!fw) {
4511                         if (priv->fw_alt) {
4512                                 rc = mwl8k_request_alt_fw(priv);
4513                                 if (rc)
4514                                         goto fail;
4515                                 priv->fw_state = FW_STATE_LOADING_ALT;
4516                         } else
4517                                 goto fail;
4518                 } else {
4519                         priv->fw_ucode = fw;
4520                         rc = mwl8k_firmware_load_success(priv);
4521                         if (rc)
4522                                 goto fail;
4523                         else
4524                                 complete(&priv->firmware_loading_complete);
4525                 }
4526                 break;
4527
4528         case FW_STATE_LOADING_ALT:
4529                 if (!fw) {
4530                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4531                                pci_name(priv->pdev), di->helper_image);
4532                         goto fail;
4533                 }
4534                 priv->fw_ucode = fw;
4535                 rc = mwl8k_firmware_load_success(priv);
4536                 if (rc)
4537                         goto fail;
4538                 else
4539                         complete(&priv->firmware_loading_complete);
4540                 break;
4541
4542         default:
4543                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4544                        MWL8K_NAME, priv->fw_state);
4545                 BUG_ON(1);
4546         }
4547
4548         return;
4549
4550 fail:
4551         priv->fw_state = FW_STATE_ERROR;
4552         complete(&priv->firmware_loading_complete);
4553         device_release_driver(&priv->pdev->dev);
4554         mwl8k_release_firmware(priv);
4555 }
4556
4557 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4558                                bool nowait)
4559 {
4560         struct mwl8k_priv *priv = hw->priv;
4561         int rc;
4562
4563         /* Reset firmware and hardware */
4564         mwl8k_hw_reset(priv);
4565
4566         /* Ask userland hotplug daemon for the device firmware */
4567         rc = mwl8k_request_firmware(priv, fw_image, nowait);
4568         if (rc) {
4569                 wiphy_err(hw->wiphy, "Firmware files not found\n");
4570                 return rc;
4571         }
4572
4573         if (nowait)
4574                 return rc;
4575
4576         /* Load firmware into hardware */
4577         rc = mwl8k_load_firmware(hw);
4578         if (rc)
4579                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4580
4581         /* Reclaim memory once firmware is successfully loaded */
4582         mwl8k_release_firmware(priv);
4583
4584         return rc;
4585 }
4586
4587 /* initialize hw after successfully loading a firmware image */
4588 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4589 {
4590         struct mwl8k_priv *priv = hw->priv;
4591         int rc = 0;
4592         int i;
4593
4594         if (priv->ap_fw) {
4595                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4596                 if (priv->rxd_ops == NULL) {
4597                         wiphy_err(hw->wiphy,
4598                                   "Driver does not have AP firmware image support for this hardware\n");
4599                         goto err_stop_firmware;
4600                 }
4601         } else {
4602                 priv->rxd_ops = &rxd_sta_ops;
4603         }
4604
4605         priv->sniffer_enabled = false;
4606         priv->wmm_enabled = false;
4607         priv->pending_tx_pkts = 0;
4608
4609         rc = mwl8k_rxq_init(hw, 0);
4610         if (rc)
4611                 goto err_stop_firmware;
4612         rxq_refill(hw, 0, INT_MAX);
4613
4614         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4615                 rc = mwl8k_txq_init(hw, i);
4616                 if (rc)
4617                         goto err_free_queues;
4618         }
4619
4620         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4621         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4622         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4623                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4624         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4625
4626         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4627                          IRQF_SHARED, MWL8K_NAME, hw);
4628         if (rc) {
4629                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4630                 goto err_free_queues;
4631         }
4632
4633         /*
4634          * Temporarily enable interrupts.  Initial firmware host
4635          * commands use interrupts and avoid polling.  Disable
4636          * interrupts when done.
4637          */
4638         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4639
4640         /* Get config data, mac addrs etc */
4641         if (priv->ap_fw) {
4642                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4643                 if (!rc)
4644                         rc = mwl8k_cmd_set_hw_spec(hw);
4645         } else {
4646                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4647         }
4648         if (rc) {
4649                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4650                 goto err_free_irq;
4651         }
4652
4653         /* Turn radio off */
4654         rc = mwl8k_cmd_radio_disable(hw);
4655         if (rc) {
4656                 wiphy_err(hw->wiphy, "Cannot disable\n");
4657                 goto err_free_irq;
4658         }
4659
4660         /* Clear MAC address */
4661         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4662         if (rc) {
4663                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4664                 goto err_free_irq;
4665         }
4666
4667         /* Disable interrupts */
4668         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4669         free_irq(priv->pdev->irq, hw);
4670
4671         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4672                    priv->device_info->part_name,
4673                    priv->hw_rev, hw->wiphy->perm_addr,
4674                    priv->ap_fw ? "AP" : "STA",
4675                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4676                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4677
4678         return 0;
4679
4680 err_free_irq:
4681         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4682         free_irq(priv->pdev->irq, hw);
4683
4684 err_free_queues:
4685         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4686                 mwl8k_txq_deinit(hw, i);
4687         mwl8k_rxq_deinit(hw, 0);
4688
4689 err_stop_firmware:
4690         mwl8k_hw_reset(priv);
4691
4692         return rc;
4693 }
4694
4695 /*
4696  * invoke mwl8k_reload_firmware to change the firmware image after the device
4697  * has already been registered
4698  */
4699 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4700 {
4701         int i, rc = 0;
4702         struct mwl8k_priv *priv = hw->priv;
4703
4704         mwl8k_stop(hw);
4705         mwl8k_rxq_deinit(hw, 0);
4706
4707         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4708                 mwl8k_txq_deinit(hw, i);
4709
4710         rc = mwl8k_init_firmware(hw, fw_image, false);
4711         if (rc)
4712                 goto fail;
4713
4714         rc = mwl8k_probe_hw(hw);
4715         if (rc)
4716                 goto fail;
4717
4718         rc = mwl8k_start(hw);
4719         if (rc)
4720                 goto fail;
4721
4722         rc = mwl8k_config(hw, ~0);
4723         if (rc)
4724                 goto fail;
4725
4726         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4727                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4728                 if (rc)
4729                         goto fail;
4730         }
4731
4732         return rc;
4733
4734 fail:
4735         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4736         return rc;
4737 }
4738
4739 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4740 {
4741         struct ieee80211_hw *hw = priv->hw;
4742         int i, rc;
4743
4744         rc = mwl8k_load_firmware(hw);
4745         mwl8k_release_firmware(priv);
4746         if (rc) {
4747                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4748                 return rc;
4749         }
4750
4751         /*
4752          * Extra headroom is the size of the required DMA header
4753          * minus the size of the smallest 802.11 frame (CTS frame).
4754          */
4755         hw->extra_tx_headroom =
4756                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4757
4758         hw->channel_change_time = 10;
4759
4760         hw->queues = MWL8K_TX_QUEUES;
4761
4762         /* Set rssi values to dBm */
4763         hw->flags |= IEEE80211_HW_SIGNAL_DBM;
4764         hw->vif_data_size = sizeof(struct mwl8k_vif);
4765         hw->sta_data_size = sizeof(struct mwl8k_sta);
4766
4767         priv->macids_used = 0;
4768         INIT_LIST_HEAD(&priv->vif_list);
4769
4770         /* Set default radio state and preamble */
4771         priv->radio_on = 0;
4772         priv->radio_short_preamble = 0;
4773
4774         /* Finalize join worker */
4775         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4776
4777         /* TX reclaim and RX tasklets.  */
4778         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4779         tasklet_disable(&priv->poll_tx_task);
4780         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4781         tasklet_disable(&priv->poll_rx_task);
4782
4783         /* Power management cookie */
4784         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4785         if (priv->cookie == NULL)
4786                 return -ENOMEM;
4787
4788         mutex_init(&priv->fw_mutex);
4789         priv->fw_mutex_owner = NULL;
4790         priv->fw_mutex_depth = 0;
4791         priv->hostcmd_wait = NULL;
4792
4793         spin_lock_init(&priv->tx_lock);
4794
4795         priv->tx_wait = NULL;
4796
4797         rc = mwl8k_probe_hw(hw);
4798         if (rc)
4799                 goto err_free_cookie;
4800
4801         hw->wiphy->interface_modes = 0;
4802         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4803                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4804         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4805                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4806
4807         rc = ieee80211_register_hw(hw);
4808         if (rc) {
4809                 wiphy_err(hw->wiphy, "Cannot register device\n");
4810                 goto err_unprobe_hw;
4811         }
4812
4813         return 0;
4814
4815 err_unprobe_hw:
4816         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4817                 mwl8k_txq_deinit(hw, i);
4818         mwl8k_rxq_deinit(hw, 0);
4819
4820 err_free_cookie:
4821         if (priv->cookie != NULL)
4822                 pci_free_consistent(priv->pdev, 4,
4823                                 priv->cookie, priv->cookie_dma);
4824
4825         return rc;
4826 }
4827 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4828                                  const struct pci_device_id *id)
4829 {
4830         static int printed_version;
4831         struct ieee80211_hw *hw;
4832         struct mwl8k_priv *priv;
4833         struct mwl8k_device_info *di;
4834         int rc;
4835
4836         if (!printed_version) {
4837                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4838                 printed_version = 1;
4839         }
4840
4841
4842         rc = pci_enable_device(pdev);
4843         if (rc) {
4844                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4845                        MWL8K_NAME);
4846                 return rc;
4847         }
4848
4849         rc = pci_request_regions(pdev, MWL8K_NAME);
4850         if (rc) {
4851                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4852                        MWL8K_NAME);
4853                 goto err_disable_device;
4854         }
4855
4856         pci_set_master(pdev);
4857
4858
4859         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4860         if (hw == NULL) {
4861                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4862                 rc = -ENOMEM;
4863                 goto err_free_reg;
4864         }
4865
4866         SET_IEEE80211_DEV(hw, &pdev->dev);
4867         pci_set_drvdata(pdev, hw);
4868
4869         priv = hw->priv;
4870         priv->hw = hw;
4871         priv->pdev = pdev;
4872         priv->device_info = &mwl8k_info_tbl[id->driver_data];
4873
4874
4875         priv->sram = pci_iomap(pdev, 0, 0x10000);
4876         if (priv->sram == NULL) {
4877                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4878                 goto err_iounmap;
4879         }
4880
4881         /*
4882          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4883          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4884          */
4885         priv->regs = pci_iomap(pdev, 1, 0x10000);
4886         if (priv->regs == NULL) {
4887                 priv->regs = pci_iomap(pdev, 2, 0x10000);
4888                 if (priv->regs == NULL) {
4889                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
4890                         goto err_iounmap;
4891                 }
4892         }
4893
4894         /*
4895          * Choose the initial fw image depending on user input.  If a second
4896          * image is available, make it the alternative image that will be
4897          * loaded if the first one fails.
4898          */
4899         init_completion(&priv->firmware_loading_complete);
4900         di = priv->device_info;
4901         if (ap_mode_default && di->fw_image_ap) {
4902                 priv->fw_pref = di->fw_image_ap;
4903                 priv->fw_alt = di->fw_image_sta;
4904         } else if (!ap_mode_default && di->fw_image_sta) {
4905                 priv->fw_pref = di->fw_image_sta;
4906                 priv->fw_alt = di->fw_image_ap;
4907         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4908                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
4909                 priv->fw_pref = di->fw_image_sta;
4910         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4911                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
4912                 priv->fw_pref = di->fw_image_ap;
4913         }
4914         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4915         if (rc)
4916                 goto err_stop_firmware;
4917         return rc;
4918
4919 err_stop_firmware:
4920         mwl8k_hw_reset(priv);
4921
4922 err_iounmap:
4923         if (priv->regs != NULL)
4924                 pci_iounmap(pdev, priv->regs);
4925
4926         if (priv->sram != NULL)
4927                 pci_iounmap(pdev, priv->sram);
4928
4929         pci_set_drvdata(pdev, NULL);
4930         ieee80211_free_hw(hw);
4931
4932 err_free_reg:
4933         pci_release_regions(pdev);
4934
4935 err_disable_device:
4936         pci_disable_device(pdev);
4937
4938         return rc;
4939 }
4940
4941 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4942 {
4943         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4944 }
4945
4946 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4947 {
4948         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4949         struct mwl8k_priv *priv;
4950         int i;
4951
4952         if (hw == NULL)
4953                 return;
4954         priv = hw->priv;
4955
4956         wait_for_completion(&priv->firmware_loading_complete);
4957
4958         if (priv->fw_state == FW_STATE_ERROR) {
4959                 mwl8k_hw_reset(priv);
4960                 goto unmap;
4961         }
4962
4963         ieee80211_stop_queues(hw);
4964
4965         ieee80211_unregister_hw(hw);
4966
4967         /* Remove TX reclaim and RX tasklets.  */
4968         tasklet_kill(&priv->poll_tx_task);
4969         tasklet_kill(&priv->poll_rx_task);
4970
4971         /* Stop hardware */
4972         mwl8k_hw_reset(priv);
4973
4974         /* Return all skbs to mac80211 */
4975         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4976                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4977
4978         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4979                 mwl8k_txq_deinit(hw, i);
4980
4981         mwl8k_rxq_deinit(hw, 0);
4982
4983         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4984
4985 unmap:
4986         pci_iounmap(pdev, priv->regs);
4987         pci_iounmap(pdev, priv->sram);
4988         pci_set_drvdata(pdev, NULL);
4989         ieee80211_free_hw(hw);
4990         pci_release_regions(pdev);
4991         pci_disable_device(pdev);
4992 }
4993
4994 static struct pci_driver mwl8k_driver = {
4995         .name           = MWL8K_NAME,
4996         .id_table       = mwl8k_pci_id_table,
4997         .probe          = mwl8k_probe,
4998         .remove         = __devexit_p(mwl8k_remove),
4999         .shutdown       = __devexit_p(mwl8k_shutdown),
5000 };
5001
5002 static int __init mwl8k_init(void)
5003 {
5004         return pci_register_driver(&mwl8k_driver);
5005 }
5006
5007 static void __exit mwl8k_exit(void)
5008 {
5009         pci_unregister_driver(&mwl8k_driver);
5010 }
5011
5012 module_init(mwl8k_init);
5013 module_exit(mwl8k_exit);
5014
5015 MODULE_DESCRIPTION(MWL8K_DESC);
5016 MODULE_VERSION(MWL8K_VERSION);
5017 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5018 MODULE_LICENSE("GPL");