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 /* Per interface specific private data */
 236 struct mwl8k_vif {
 237         struct list_head list;
 238         struct ieee80211_vif *vif;
 239
 240         /* Firmware macid for this vif.  */
 241         int macid;
 242
 243         /* Non AMPDU sequence number assigned by driver.  */
 244         u16 seqno;
 245 };
 246 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 247
 248 struct mwl8k_sta {
 249         /* Index into station database. Returned by UPDATE_STADB.  */
 250         u8 peer_id;
 251 };
 252 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 253
 254 static const struct ieee80211_channel mwl8k_channels_24[] = {
 255         { .center_freq = 2412, .hw_value = 1, },
 256         { .center_freq = 2417, .hw_value = 2, },
 257         { .center_freq = 2422, .hw_value = 3, },
 258         { .center_freq = 2427, .hw_value = 4, },
 259         { .center_freq = 2432, .hw_value = 5, },
 260         { .center_freq = 2437, .hw_value = 6, },
 261         { .center_freq = 2442, .hw_value = 7, },
 262         { .center_freq = 2447, .hw_value = 8, },
 263         { .center_freq = 2452, .hw_value = 9, },
 264         { .center_freq = 2457, .hw_value = 10, },
 265         { .center_freq = 2462, .hw_value = 11, },
 266         { .center_freq = 2467, .hw_value = 12, },
 267         { .center_freq = 2472, .hw_value = 13, },
 268         { .center_freq = 2484, .hw_value = 14, },
 269 };
 270
 271 static const struct ieee80211_rate mwl8k_rates_24[] = {
 272         { .bitrate = 10, .hw_value = 2, },
 273         { .bitrate = 20, .hw_value = 4, },
 274         { .bitrate = 55, .hw_value = 11, },
 275         { .bitrate = 110, .hw_value = 22, },
 276         { .bitrate = 220, .hw_value = 44, },
 277         { .bitrate = 60, .hw_value = 12, },
 278         { .bitrate = 90, .hw_value = 18, },
 279         { .bitrate = 120, .hw_value = 24, },
 280         { .bitrate = 180, .hw_value = 36, },
 281         { .bitrate = 240, .hw_value = 48, },
 282         { .bitrate = 360, .hw_value = 72, },
 283         { .bitrate = 480, .hw_value = 96, },
 284         { .bitrate = 540, .hw_value = 108, },
 285         { .bitrate = 720, .hw_value = 144, },
 286 };
 287
 288 static const struct ieee80211_channel mwl8k_channels_50[] = {
 289         { .center_freq = 5180, .hw_value = 36, },
 290         { .center_freq = 5200, .hw_value = 40, },
 291         { .center_freq = 5220, .hw_value = 44, },
 292         { .center_freq = 5240, .hw_value = 48, },
 293 };
 294
 295 static const struct ieee80211_rate mwl8k_rates_50[] = {
 296         { .bitrate = 60, .hw_value = 12, },
 297         { .bitrate = 90, .hw_value = 18, },
 298         { .bitrate = 120, .hw_value = 24, },
 299         { .bitrate = 180, .hw_value = 36, },
 300         { .bitrate = 240, .hw_value = 48, },
 301         { .bitrate = 360, .hw_value = 72, },
 302         { .bitrate = 480, .hw_value = 96, },
 303         { .bitrate = 540, .hw_value = 108, },
 304         { .bitrate = 720, .hw_value = 144, },
 305 };
 306
 307 /* Set or get info from Firmware */
 308 #define MWL8K_CMD_GET                   0x0000
 309 #define MWL8K_CMD_SET                   0x0001
 310 #define MWL8K_CMD_SET_LIST              0x0002
 311
 312 /* Firmware command codes */
 313 #define MWL8K_CMD_CODE_DNLD             0x0001
 314 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 315 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 316 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 317 #define MWL8K_CMD_GET_STAT              0x0014
 318 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 319 #define MWL8K_CMD_RF_TX_POWER           0x001e
 320 #define MWL8K_CMD_TX_POWER              0x001f
 321 #define MWL8K_CMD_RF_ANTENNA            0x0020
 322 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 323 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 324 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 325 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 326 #define MWL8K_CMD_SET_AID               0x010d
 327 #define MWL8K_CMD_SET_RATE              0x0110
 328 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 329 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 330 #define MWL8K_CMD_SET_SLOT              0x0114
 331 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 332 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 333 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 334 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 335 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 336 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 337 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 338 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 339 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 340 #define MWL8K_CMD_UPDATE_STADB          0x1123
 341
 342 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
 343 {
 344         u16 command = le16_to_cpu(cmd);
 345
 346 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 347                                         snprintf(buf, bufsize, "%s", #x);\
 348                                         return buf;\
 349                                         } while (0)
 350         switch (command & ~0x8000) {
 351                 MWL8K_CMDNAME(CODE_DNLD);
 352                 MWL8K_CMDNAME(GET_HW_SPEC);
 353                 MWL8K_CMDNAME(SET_HW_SPEC);
 354                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 355                 MWL8K_CMDNAME(GET_STAT);
 356                 MWL8K_CMDNAME(RADIO_CONTROL);
 357                 MWL8K_CMDNAME(RF_TX_POWER);
 358                 MWL8K_CMDNAME(TX_POWER);
 359                 MWL8K_CMDNAME(RF_ANTENNA);
 360                 MWL8K_CMDNAME(SET_BEACON);
 361                 MWL8K_CMDNAME(SET_PRE_SCAN);
 362                 MWL8K_CMDNAME(SET_POST_SCAN);
 363                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 364                 MWL8K_CMDNAME(SET_AID);
 365                 MWL8K_CMDNAME(SET_RATE);
 366                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 367                 MWL8K_CMDNAME(RTS_THRESHOLD);
 368                 MWL8K_CMDNAME(SET_SLOT);
 369                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 370                 MWL8K_CMDNAME(SET_WMM_MODE);
 371                 MWL8K_CMDNAME(MIMO_CONFIG);
 372                 MWL8K_CMDNAME(USE_FIXED_RATE);
 373                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 374                 MWL8K_CMDNAME(SET_MAC_ADDR);
 375                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 376                 MWL8K_CMDNAME(BSS_START);
 377                 MWL8K_CMDNAME(SET_NEW_STN);
 378                 MWL8K_CMDNAME(UPDATE_STADB);
 379         default:
 380                 snprintf(buf, bufsize, "0x%x", cmd);
 381         }
 382 #undef MWL8K_CMDNAME
 383
 384         return buf;
 385 }
 386
 387 /* Hardware and firmware reset */
 388 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 389 {
 390         iowrite32(MWL8K_H2A_INT_RESET,
 391                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 392         iowrite32(MWL8K_H2A_INT_RESET,
 393                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 394         msleep(20);
 395 }
 396
 397 /* Release fw image */
 398 static void mwl8k_release_fw(const struct firmware **fw)
 399 {
 400         if (*fw == NULL)
 401                 return;
 402         release_firmware(*fw);
 403         *fw = NULL;
 404 }
 405
 406 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 407 {
 408         mwl8k_release_fw(&priv->fw_ucode);
 409         mwl8k_release_fw(&priv->fw_helper);
 410 }
 411
 412 /* states for asynchronous f/w loading */
 413 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
 414 enum {
 415         FW_STATE_INIT = 0,
 416         FW_STATE_LOADING_PREF,
 417         FW_STATE_LOADING_ALT,
 418         FW_STATE_ERROR,
 419 };
 420
 421 /* Request fw image */
 422 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 423                             const char *fname, const struct firmware **fw,
 424                             bool nowait)
 425 {
 426         /* release current image */
 427         if (*fw != NULL)
 428                 mwl8k_release_fw(fw);
 429
 430         if (nowait)
 431                 return request_firmware_nowait(THIS_MODULE, 1, fname,
 432                                                &priv->pdev->dev, GFP_KERNEL,
 433                                                priv, mwl8k_fw_state_machine);
 434         else
 435                 return request_firmware(fw, fname, &priv->pdev->dev);
 436 }
 437
 438 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 439                                   bool nowait)
 440 {
 441         struct mwl8k_device_info *di = priv->device_info;
 442         int rc;
 443
 444         if (di->helper_image != NULL) {
 445                 if (nowait)
 446                         rc = mwl8k_request_fw(priv, di->helper_image,
 447                                               &priv->fw_helper, true);
 448                 else
 449                         rc = mwl8k_request_fw(priv, di->helper_image,
 450                                               &priv->fw_helper, false);
 451                 if (rc)
 452                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 453                                pci_name(priv->pdev), di->helper_image);
 454
 455                 if (rc || nowait)
 456                         return rc;
 457         }
 458
 459         if (nowait) {
 460                 /*
 461                  * if we get here, no helper image is needed.  Skip the
 462                  * FW_STATE_INIT state.
 463                  */
 464                 priv->fw_state = FW_STATE_LOADING_PREF;
 465                 rc = mwl8k_request_fw(priv, fw_image,
 466                                       &priv->fw_ucode,
 467                                       true);
 468         } else
 469                 rc = mwl8k_request_fw(priv, fw_image,
 470                                       &priv->fw_ucode, false);
 471         if (rc) {
 472                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 473                        pci_name(priv->pdev), fw_image);
 474                 mwl8k_release_fw(&priv->fw_helper);
 475                 return rc;
 476         }
 477
 478         return 0;
 479 }
 480
 481 struct mwl8k_cmd_pkt {
 482         __le16  code;
 483         __le16  length;
 484         __u8    seq_num;
 485         __u8    macid;
 486         __le16  result;
 487         char    payload[0];
 488 } __packed;
 489
 490 /*
 491  * Firmware loading.
 492  */
 493 static int
 494 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 495 {
 496         void __iomem *regs = priv->regs;
 497         dma_addr_t dma_addr;
 498         int loops;
 499
 500         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 501         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 502                 return -ENOMEM;
 503
 504         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 505         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 506         iowrite32(MWL8K_H2A_INT_DOORBELL,
 507                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 508         iowrite32(MWL8K_H2A_INT_DUMMY,
 509                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 510
 511         loops = 1000;
 512         do {
 513                 u32 int_code;
 514
 515                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 516                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 517                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 518                         break;
 519                 }
 520
 521                 cond_resched();
 522                 udelay(1);
 523         } while (--loops);
 524
 525         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 526
 527         return loops ? 0 : -ETIMEDOUT;
 528 }
 529
 530 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 531                                 const u8 *data, size_t length)
 532 {
 533         struct mwl8k_cmd_pkt *cmd;
 534         int done;
 535         int rc = 0;
 536
 537         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 538         if (cmd == NULL)
 539                 return -ENOMEM;
 540
 541         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 542         cmd->seq_num = 0;
 543         cmd->macid = 0;
 544         cmd->result = 0;
 545
 546         done = 0;
 547         while (length) {
 548                 int block_size = length > 256 ? 256 : length;
 549
 550                 memcpy(cmd->payload, data + done, block_size);
 551                 cmd->length = cpu_to_le16(block_size);
 552
 553                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 554                                                 sizeof(*cmd) + block_size);
 555                 if (rc)
 556                         break;
 557
 558                 done += block_size;
 559                 length -= block_size;
 560         }
 561
 562         if (!rc) {
 563                 cmd->length = 0;
 564                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 565         }
 566
 567         kfree(cmd);
 568
 569         return rc;
 570 }
 571
 572 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 573                                 const u8 *data, size_t length)
 574 {
 575         unsigned char *buffer;
 576         int may_continue, rc = 0;
 577         u32 done, prev_block_size;
 578
 579         buffer = kmalloc(1024, GFP_KERNEL);
 580         if (buffer == NULL)
 581                 return -ENOMEM;
 582
 583         done = 0;
 584         prev_block_size = 0;
 585         may_continue = 1000;
 586         while (may_continue > 0) {
 587                 u32 block_size;
 588
 589                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 590                 if (block_size & 1) {
 591                         block_size &= ~1;
 592                         may_continue--;
 593                 } else {
 594                         done += prev_block_size;
 595                         length -= prev_block_size;
 596                 }
 597
 598                 if (block_size > 1024 || block_size > length) {
 599                         rc = -EOVERFLOW;
 600                         break;
 601                 }
 602
 603                 if (length == 0) {
 604                         rc = 0;
 605                         break;
 606                 }
 607
 608                 if (block_size == 0) {
 609                         rc = -EPROTO;
 610                         may_continue--;
 611                         udelay(1);
 612                         continue;
 613                 }
 614
 615                 prev_block_size = block_size;
 616                 memcpy(buffer, data + done, block_size);
 617
 618                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 619                 if (rc)
 620                         break;
 621         }
 622
 623         if (!rc && length != 0)
 624                 rc = -EREMOTEIO;
 625
 626         kfree(buffer);
 627
 628         return rc;
 629 }
 630
 631 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 632 {
 633         struct mwl8k_priv *priv = hw->priv;
 634         const struct firmware *fw = priv->fw_ucode;
 635         int rc;
 636         int loops;
 637
 638         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 639                 const struct firmware *helper = priv->fw_helper;
 640
 641                 if (helper == NULL) {
 642                         printk(KERN_ERR "%s: helper image needed but none "
 643                                "given\n", pci_name(priv->pdev));
 644                         return -EINVAL;
 645                 }
 646
 647                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 648                 if (rc) {
 649                         printk(KERN_ERR "%s: unable to load firmware "
 650                                "helper image\n", pci_name(priv->pdev));
 651                         return rc;
 652                 }
 653                 msleep(5);
 654
 655                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 656         } else {
 657                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 658         }
 659
 660         if (rc) {
 661                 printk(KERN_ERR "%s: unable to load firmware image\n",
 662                        pci_name(priv->pdev));
 663                 return rc;
 664         }
 665
 666         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 667
 668         loops = 500000;
 669         do {
 670                 u32 ready_code;
 671
 672                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 673                 if (ready_code == MWL8K_FWAP_READY) {
 674                         priv->ap_fw = 1;
 675                         break;
 676                 } else if (ready_code == MWL8K_FWSTA_READY) {
 677                         priv->ap_fw = 0;
 678                         break;
 679                 }
 680
 681                 cond_resched();
 682                 udelay(1);
 683         } while (--loops);
 684
 685         return loops ? 0 : -ETIMEDOUT;
 686 }
 687
 688
 689 /* DMA header used by firmware and hardware.  */
 690 struct mwl8k_dma_data {
 691         __le16 fwlen;
 692         struct ieee80211_hdr wh;
 693         char data[0];
 694 } __packed;
 695
 696 /* Routines to add/remove DMA header from skb.  */
 697 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 698 {
 699         struct mwl8k_dma_data *tr;
 700         int hdrlen;
 701
 702         tr = (struct mwl8k_dma_data *)skb->data;
 703         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 704
 705         if (hdrlen != sizeof(tr->wh)) {
 706                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 707                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 708                         *((__le16 *)(tr->data - 2)) = qos;
 709                 } else {
 710                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 711                 }
 712         }
 713
 714         if (hdrlen != sizeof(*tr))
 715                 skb_pull(skb, sizeof(*tr) - hdrlen);
 716 }
 717
 718 static void
 719 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
 720 {
 721         struct ieee80211_hdr *wh;
 722         int hdrlen;
 723         int reqd_hdrlen;
 724         struct mwl8k_dma_data *tr;
 725
 726         /*
 727          * Add a firmware DMA header; the firmware requires that we
 728          * present a 2-byte payload length followed by a 4-address
 729          * header (without QoS field), followed (optionally) by any
 730          * WEP/ExtIV header (but only filled in for CCMP).
 731          */
 732         wh = (struct ieee80211_hdr *)skb->data;
 733
 734         hdrlen = ieee80211_hdrlen(wh->frame_control);
 735         reqd_hdrlen = sizeof(*tr);
 736
 737         if (hdrlen != reqd_hdrlen)
 738                 skb_push(skb, reqd_hdrlen - hdrlen);
 739
 740         if (ieee80211_is_data_qos(wh->frame_control))
 741                 hdrlen -= IEEE80211_QOS_CTL_LEN;
 742
 743         tr = (struct mwl8k_dma_data *)skb->data;
 744         if (wh != &tr->wh)
 745                 memmove(&tr->wh, wh, hdrlen);
 746         if (hdrlen != sizeof(tr->wh))
 747                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 748
 749         /*
 750          * Firmware length is the length of the fully formed "802.11
 751          * payload".  That is, everything except for the 802.11 header.
 752          * This includes all crypto material including the MIC.
 753          */
 754         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
 755 }
 756
 757
 758 /*
 759  * Packet reception for 88w8366 AP firmware.
 760  */
 761 struct mwl8k_rxd_8366_ap {
 762         __le16 pkt_len;
 763         __u8 sq2;
 764         __u8 rate;
 765         __le32 pkt_phys_addr;
 766         __le32 next_rxd_phys_addr;
 767         __le16 qos_control;
 768         __le16 htsig2;
 769         __le32 hw_rssi_info;
 770         __le32 hw_noise_floor_info;
 771         __u8 noise_floor;
 772         __u8 pad0[3];
 773         __u8 rssi;
 774         __u8 rx_status;
 775         __u8 channel;
 776         __u8 rx_ctrl;
 777 } __packed;
 778
 779 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 780 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 781 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 782
 783 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 784
 785 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 786 {
 787         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 788
 789         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 790         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 791 }
 792
 793 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 794 {
 795         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 796
 797         rxd->pkt_len = cpu_to_le16(len);
 798         rxd->pkt_phys_addr = cpu_to_le32(addr);
 799         wmb();
 800         rxd->rx_ctrl = 0;
 801 }
 802
 803 static int
 804 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 805                           __le16 *qos, s8 *noise)
 806 {
 807         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 808
 809         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 810                 return -1;
 811         rmb();
 812
 813         memset(status, 0, sizeof(*status));
 814
 815         status->signal = -rxd->rssi;
 816         *noise = -rxd->noise_floor;
 817
 818         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 819                 status->flag |= RX_FLAG_HT;
 820                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 821                         status->flag |= RX_FLAG_40MHZ;
 822                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 823         } else {
 824                 int i;
 825
 826                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 827                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 828                                 status->rate_idx = i;
 829                                 break;
 830                         }
 831                 }
 832         }
 833
 834         if (rxd->channel > 14) {
 835                 status->band = IEEE80211_BAND_5GHZ;
 836                 if (!(status->flag & RX_FLAG_HT))
 837                         status->rate_idx -= 5;
 838         } else {
 839                 status->band = IEEE80211_BAND_2GHZ;
 840         }
 841         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 842
 843         *qos = rxd->qos_control;
 844
 845         return le16_to_cpu(rxd->pkt_len);
 846 }
 847
 848 static struct rxd_ops rxd_8366_ap_ops = {
 849         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 850         .rxd_init       = mwl8k_rxd_8366_ap_init,
 851         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 852         .rxd_process    = mwl8k_rxd_8366_ap_process,
 853 };
 854
 855 /*
 856  * Packet reception for STA firmware.
 857  */
 858 struct mwl8k_rxd_sta {
 859         __le16 pkt_len;
 860         __u8 link_quality;
 861         __u8 noise_level;
 862         __le32 pkt_phys_addr;
 863         __le32 next_rxd_phys_addr;
 864         __le16 qos_control;
 865         __le16 rate_info;
 866         __le32 pad0[4];
 867         __u8 rssi;
 868         __u8 channel;
 869         __le16 pad1;
 870         __u8 rx_ctrl;
 871         __u8 rx_status;
 872         __u8 pad2[2];
 873 } __packed;
 874
 875 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 876 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 877 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 878 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 879 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 880 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 881
 882 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 883
 884 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 885 {
 886         struct mwl8k_rxd_sta *rxd = _rxd;
 887
 888         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 889         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 890 }
 891
 892 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 893 {
 894         struct mwl8k_rxd_sta *rxd = _rxd;
 895
 896         rxd->pkt_len = cpu_to_le16(len);
 897         rxd->pkt_phys_addr = cpu_to_le32(addr);
 898         wmb();
 899         rxd->rx_ctrl = 0;
 900 }
 901
 902 static int
 903 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 904                        __le16 *qos, s8 *noise)
 905 {
 906         struct mwl8k_rxd_sta *rxd = _rxd;
 907         u16 rate_info;
 908
 909         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 910                 return -1;
 911         rmb();
 912
 913         rate_info = le16_to_cpu(rxd->rate_info);
 914
 915         memset(status, 0, sizeof(*status));
 916
 917         status->signal = -rxd->rssi;
 918         *noise = -rxd->noise_level;
 919         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 920         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
 921
 922         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
 923                 status->flag |= RX_FLAG_SHORTPRE;
 924         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
 925                 status->flag |= RX_FLAG_40MHZ;
 926         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
 927                 status->flag |= RX_FLAG_SHORT_GI;
 928         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
 929                 status->flag |= RX_FLAG_HT;
 930
 931         if (rxd->channel > 14) {
 932                 status->band = IEEE80211_BAND_5GHZ;
 933                 if (!(status->flag & RX_FLAG_HT))
 934                         status->rate_idx -= 5;
 935         } else {
 936                 status->band = IEEE80211_BAND_2GHZ;
 937         }
 938         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 939
 940         *qos = rxd->qos_control;
 941
 942         return le16_to_cpu(rxd->pkt_len);
 943 }
 944
 945 static struct rxd_ops rxd_sta_ops = {
 946         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
 947         .rxd_init       = mwl8k_rxd_sta_init,
 948         .rxd_refill     = mwl8k_rxd_sta_refill,
 949         .rxd_process    = mwl8k_rxd_sta_process,
 950 };
 951
 952
 953 #define MWL8K_RX_DESCS          256
 954 #define MWL8K_RX_MAXSZ          3800
 955
 956 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 957 {
 958         struct mwl8k_priv *priv = hw->priv;
 959         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 960         int size;
 961         int i;
 962
 963         rxq->rxd_count = 0;
 964         rxq->head = 0;
 965         rxq->tail = 0;
 966
 967         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 968
 969         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 970         if (rxq->rxd == NULL) {
 971                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
 972                 return -ENOMEM;
 973         }
 974         memset(rxq->rxd, 0, size);
 975
 976         rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
 977         if (rxq->buf == NULL) {
 978                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
 979                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
 980                 return -ENOMEM;
 981         }
 982         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
 983
 984         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 985                 int desc_size;
 986                 void *rxd;
 987                 int nexti;
 988                 dma_addr_t next_dma_addr;
 989
 990                 desc_size = priv->rxd_ops->rxd_size;
 991                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
 992
 993                 nexti = i + 1;
 994                 if (nexti == MWL8K_RX_DESCS)
 995                         nexti = 0;
 996                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
 997
 998                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
 999         }
1000
1001         return 0;
1002 }
1003
1004 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1005 {
1006         struct mwl8k_priv *priv = hw->priv;
1007         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1008         int refilled;
1009
1010         refilled = 0;
1011         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1012                 struct sk_buff *skb;
1013                 dma_addr_t addr;
1014                 int rx;
1015                 void *rxd;
1016
1017                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1018                 if (skb == NULL)
1019                         break;
1020
1021                 addr = pci_map_single(priv->pdev, skb->data,
1022                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1023
1024                 rxq->rxd_count++;
1025                 rx = rxq->tail++;
1026                 if (rxq->tail == MWL8K_RX_DESCS)
1027                         rxq->tail = 0;
1028                 rxq->buf[rx].skb = skb;
1029                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1030
1031                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1032                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1033
1034                 refilled++;
1035         }
1036
1037         return refilled;
1038 }
1039
1040 /* Must be called only when the card's reception is completely halted */
1041 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1042 {
1043         struct mwl8k_priv *priv = hw->priv;
1044         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1045         int i;
1046
1047         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1048                 if (rxq->buf[i].skb != NULL) {
1049                         pci_unmap_single(priv->pdev,
1050                                          dma_unmap_addr(&rxq->buf[i], dma),
1051                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1052                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1053
1054                         kfree_skb(rxq->buf[i].skb);
1055                         rxq->buf[i].skb = NULL;
1056                 }
1057         }
1058
1059         kfree(rxq->buf);
1060         rxq->buf = NULL;
1061
1062         pci_free_consistent(priv->pdev,
1063                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1064                             rxq->rxd, rxq->rxd_dma);
1065         rxq->rxd = NULL;
1066 }
1067
1068
1069 /*
1070  * Scan a list of BSSIDs to process for finalize join.
1071  * Allows for extension to process multiple BSSIDs.
1072  */
1073 static inline int
1074 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1075 {
1076         return priv->capture_beacon &&
1077                 ieee80211_is_beacon(wh->frame_control) &&
1078                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1079 }
1080
1081 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1082                                      struct sk_buff *skb)
1083 {
1084         struct mwl8k_priv *priv = hw->priv;
1085
1086         priv->capture_beacon = false;
1087         memset(priv->capture_bssid, 0, ETH_ALEN);
1088
1089         /*
1090          * Use GFP_ATOMIC as rxq_process is called from
1091          * the primary interrupt handler, memory allocation call
1092          * must not sleep.
1093          */
1094         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1095         if (priv->beacon_skb != NULL)
1096                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1097 }
1098
1099 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1100 {
1101         struct mwl8k_priv *priv = hw->priv;
1102         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1103         int processed;
1104
1105         processed = 0;
1106         while (rxq->rxd_count && limit--) {
1107                 struct sk_buff *skb;
1108                 void *rxd;
1109                 int pkt_len;
1110                 struct ieee80211_rx_status status;
1111                 __le16 qos;
1112
1113                 skb = rxq->buf[rxq->head].skb;
1114                 if (skb == NULL)
1115                         break;
1116
1117                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1118
1119                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1120                                                         &priv->noise);
1121                 if (pkt_len < 0)
1122                         break;
1123
1124                 rxq->buf[rxq->head].skb = NULL;
1125
1126                 pci_unmap_single(priv->pdev,
1127                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1128                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1129                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1130
1131                 rxq->head++;
1132                 if (rxq->head == MWL8K_RX_DESCS)
1133                         rxq->head = 0;
1134
1135                 rxq->rxd_count--;
1136
1137                 skb_put(skb, pkt_len);
1138                 mwl8k_remove_dma_header(skb, qos);
1139
1140                 /*
1141                  * Check for a pending join operation.  Save a
1142                  * copy of the beacon and schedule a tasklet to
1143                  * send a FINALIZE_JOIN command to the firmware.
1144                  */
1145                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1146                         mwl8k_save_beacon(hw, skb);
1147
1148                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1149                 ieee80211_rx_irqsafe(hw, skb);
1150
1151                 processed++;
1152         }
1153
1154         return processed;
1155 }
1156
1157
1158 /*
1159  * Packet transmission.
1160  */
1161
1162 #define MWL8K_TXD_STATUS_OK                     0x00000001
1163 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1164 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1165 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1166 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1167
1168 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1169 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1170 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1171 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1172 #define MWL8K_QOS_EOSP                          0x0010
1173
1174 struct mwl8k_tx_desc {
1175         __le32 status;
1176         __u8 data_rate;
1177         __u8 tx_priority;
1178         __le16 qos_control;
1179         __le32 pkt_phys_addr;
1180         __le16 pkt_len;
1181         __u8 dest_MAC_addr[ETH_ALEN];
1182         __le32 next_txd_phys_addr;
1183         __le32 reserved;
1184         __le16 rate_info;
1185         __u8 peer_id;
1186         __u8 tx_frag_cnt;
1187 } __packed;
1188
1189 #define MWL8K_TX_DESCS          128
1190
1191 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1192 {
1193         struct mwl8k_priv *priv = hw->priv;
1194         struct mwl8k_tx_queue *txq = priv->txq + index;
1195         int size;
1196         int i;
1197
1198         txq->len = 0;
1199         txq->head = 0;
1200         txq->tail = 0;
1201
1202         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1203
1204         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1205         if (txq->txd == NULL) {
1206                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1207                 return -ENOMEM;
1208         }
1209         memset(txq->txd, 0, size);
1210
1211         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1212         if (txq->skb == NULL) {
1213                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1214                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1215                 return -ENOMEM;
1216         }
1217         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1218
1219         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1220                 struct mwl8k_tx_desc *tx_desc;
1221                 int nexti;
1222
1223                 tx_desc = txq->txd + i;
1224                 nexti = (i + 1) % MWL8K_TX_DESCS;
1225
1226                 tx_desc->status = 0;
1227                 tx_desc->next_txd_phys_addr =
1228                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1229         }
1230
1231         return 0;
1232 }
1233
1234 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1235 {
1236         iowrite32(MWL8K_H2A_INT_PPA_READY,
1237                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1238         iowrite32(MWL8K_H2A_INT_DUMMY,
1239                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1240         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1241 }
1242
1243 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1244 {
1245         struct mwl8k_priv *priv = hw->priv;
1246         int i;
1247
1248         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1249                 struct mwl8k_tx_queue *txq = priv->txq + i;
1250                 int fw_owned = 0;
1251                 int drv_owned = 0;
1252                 int unused = 0;
1253                 int desc;
1254
1255                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1256                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1257                         u32 status;
1258
1259                         status = le32_to_cpu(tx_desc->status);
1260                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1261                                 fw_owned++;
1262                         else
1263                                 drv_owned++;
1264
1265                         if (tx_desc->pkt_len == 0)
1266                                 unused++;
1267                 }
1268
1269                 wiphy_err(hw->wiphy,
1270                           "txq[%d] len=%d head=%d tail=%d "
1271                           "fw_owned=%d drv_owned=%d unused=%d\n",
1272                           i,
1273                           txq->len, txq->head, txq->tail,
1274                           fw_owned, drv_owned, unused);
1275         }
1276 }
1277
1278 /*
1279  * Must be called with priv->fw_mutex held and tx queues stopped.
1280  */
1281 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1282
1283 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1284 {
1285         struct mwl8k_priv *priv = hw->priv;
1286         DECLARE_COMPLETION_ONSTACK(tx_wait);
1287         int retry;
1288         int rc;
1289
1290         might_sleep();
1291
1292         /*
1293          * The TX queues are stopped at this point, so this test
1294          * doesn't need to take ->tx_lock.
1295          */
1296         if (!priv->pending_tx_pkts)
1297                 return 0;
1298
1299         retry = 0;
1300         rc = 0;
1301
1302         spin_lock_bh(&priv->tx_lock);
1303         priv->tx_wait = &tx_wait;
1304         while (!rc) {
1305                 int oldcount;
1306                 unsigned long timeout;
1307
1308                 oldcount = priv->pending_tx_pkts;
1309
1310                 spin_unlock_bh(&priv->tx_lock);
1311                 timeout = wait_for_completion_timeout(&tx_wait,
1312                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1313                 spin_lock_bh(&priv->tx_lock);
1314
1315                 if (timeout) {
1316                         WARN_ON(priv->pending_tx_pkts);
1317                         if (retry) {
1318                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1319                         }
1320                         break;
1321                 }
1322
1323                 if (priv->pending_tx_pkts < oldcount) {
1324                         wiphy_notice(hw->wiphy,
1325                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1326                                      oldcount, priv->pending_tx_pkts);
1327                         retry = 1;
1328                         continue;
1329                 }
1330
1331                 priv->tx_wait = NULL;
1332
1333                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1334                           MWL8K_TX_WAIT_TIMEOUT_MS);
1335                 mwl8k_dump_tx_rings(hw);
1336
1337                 rc = -ETIMEDOUT;
1338         }
1339         spin_unlock_bh(&priv->tx_lock);
1340
1341         return rc;
1342 }
1343
1344 #define MWL8K_TXD_SUCCESS(status)                               \
1345         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1346                      MWL8K_TXD_STATUS_OK_RETRY |                \
1347                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1348
1349 static int
1350 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1351 {
1352         struct mwl8k_priv *priv = hw->priv;
1353         struct mwl8k_tx_queue *txq = priv->txq + index;
1354         int processed;
1355
1356         processed = 0;
1357         while (txq->len > 0 && limit--) {
1358                 int tx;
1359                 struct mwl8k_tx_desc *tx_desc;
1360                 unsigned long addr;
1361                 int size;
1362                 struct sk_buff *skb;
1363                 struct ieee80211_tx_info *info;
1364                 u32 status;
1365
1366                 tx = txq->head;
1367                 tx_desc = txq->txd + tx;
1368
1369                 status = le32_to_cpu(tx_desc->status);
1370
1371                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1372                         if (!force)
1373                                 break;
1374                         tx_desc->status &=
1375                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1376                 }
1377
1378                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1379                 BUG_ON(txq->len == 0);
1380                 txq->len--;
1381                 priv->pending_tx_pkts--;
1382
1383                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1384                 size = le16_to_cpu(tx_desc->pkt_len);
1385                 skb = txq->skb[tx];
1386                 txq->skb[tx] = NULL;
1387
1388                 BUG_ON(skb == NULL);
1389                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1390
1391                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1392
1393                 /* Mark descriptor as unused */
1394                 tx_desc->pkt_phys_addr = 0;
1395                 tx_desc->pkt_len = 0;
1396
1397                 info = IEEE80211_SKB_CB(skb);
1398                 ieee80211_tx_info_clear_status(info);
1399                 if (MWL8K_TXD_SUCCESS(status))
1400                         info->flags |= IEEE80211_TX_STAT_ACK;
1401
1402                 ieee80211_tx_status_irqsafe(hw, skb);
1403
1404                 processed++;
1405         }
1406
1407         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1408                 ieee80211_wake_queue(hw, index);
1409
1410         return processed;
1411 }
1412
1413 /* must be called only when the card's transmit is completely halted */
1414 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1415 {
1416         struct mwl8k_priv *priv = hw->priv;
1417         struct mwl8k_tx_queue *txq = priv->txq + index;
1418
1419         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1420
1421         kfree(txq->skb);
1422         txq->skb = NULL;
1423
1424         pci_free_consistent(priv->pdev,
1425                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1426                             txq->txd, txq->txd_dma);
1427         txq->txd = NULL;
1428 }
1429
1430 static int
1431 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1432 {
1433         struct mwl8k_priv *priv = hw->priv;
1434         struct ieee80211_tx_info *tx_info;
1435         struct mwl8k_vif *mwl8k_vif;
1436         struct ieee80211_hdr *wh;
1437         struct mwl8k_tx_queue *txq;
1438         struct mwl8k_tx_desc *tx;
1439         dma_addr_t dma;
1440         u32 txstatus;
1441         u8 txdatarate;
1442         u16 qos;
1443
1444         wh = (struct ieee80211_hdr *)skb->data;
1445         if (ieee80211_is_data_qos(wh->frame_control))
1446                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1447         else
1448                 qos = 0;
1449
1450         mwl8k_add_dma_header(skb, 0);
1451         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1452
1453         tx_info = IEEE80211_SKB_CB(skb);
1454         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1455
1456         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1457                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1458                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1459                 mwl8k_vif->seqno += 0x10;
1460         }
1461
1462         /* Setup firmware control bit fields for each frame type.  */
1463         txstatus = 0;
1464         txdatarate = 0;
1465         if (ieee80211_is_mgmt(wh->frame_control) ||
1466             ieee80211_is_ctl(wh->frame_control)) {
1467                 txdatarate = 0;
1468                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1469         } else if (ieee80211_is_data(wh->frame_control)) {
1470                 txdatarate = 1;
1471                 if (is_multicast_ether_addr(wh->addr1))
1472                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1473
1474                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1475                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1476                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1477                 else
1478                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1479         }
1480
1481         dma = pci_map_single(priv->pdev, skb->data,
1482                                 skb->len, PCI_DMA_TODEVICE);
1483
1484         if (pci_dma_mapping_error(priv->pdev, dma)) {
1485                 wiphy_debug(hw->wiphy,
1486                             "failed to dma map skb, dropping TX frame.\n");
1487                 dev_kfree_skb(skb);
1488                 return NETDEV_TX_OK;
1489         }
1490
1491         spin_lock_bh(&priv->tx_lock);
1492
1493         txq = priv->txq + index;
1494
1495         BUG_ON(txq->skb[txq->tail] != NULL);
1496         txq->skb[txq->tail] = skb;
1497
1498         tx = txq->txd + txq->tail;
1499         tx->data_rate = txdatarate;
1500         tx->tx_priority = index;
1501         tx->qos_control = cpu_to_le16(qos);
1502         tx->pkt_phys_addr = cpu_to_le32(dma);
1503         tx->pkt_len = cpu_to_le16(skb->len);
1504         tx->rate_info = 0;
1505         if (!priv->ap_fw && tx_info->control.sta != NULL)
1506                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1507         else
1508                 tx->peer_id = 0;
1509         wmb();
1510         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1511
1512         txq->len++;
1513         priv->pending_tx_pkts++;
1514
1515         txq->tail++;
1516         if (txq->tail == MWL8K_TX_DESCS)
1517                 txq->tail = 0;
1518
1519         if (txq->head == txq->tail)
1520                 ieee80211_stop_queue(hw, index);
1521
1522         mwl8k_tx_start(priv);
1523
1524         spin_unlock_bh(&priv->tx_lock);
1525
1526         return NETDEV_TX_OK;
1527 }
1528
1529
1530 /*
1531  * Firmware access.
1532  *
1533  * We have the following requirements for issuing firmware commands:
1534  * - Some commands require that the packet transmit path is idle when
1535  *   the command is issued.  (For simplicity, we'll just quiesce the
1536  *   transmit path for every command.)
1537  * - There are certain sequences of commands that need to be issued to
1538  *   the hardware sequentially, with no other intervening commands.
1539  *
1540  * This leads to an implementation of a "firmware lock" as a mutex that
1541  * can be taken recursively, and which is taken by both the low-level
1542  * command submission function (mwl8k_post_cmd) as well as any users of
1543  * that function that require issuing of an atomic sequence of commands,
1544  * and quiesces the transmit path whenever it's taken.
1545  */
1546 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1547 {
1548         struct mwl8k_priv *priv = hw->priv;
1549
1550         if (priv->fw_mutex_owner != current) {
1551                 int rc;
1552
1553                 mutex_lock(&priv->fw_mutex);
1554                 ieee80211_stop_queues(hw);
1555
1556                 rc = mwl8k_tx_wait_empty(hw);
1557                 if (rc) {
1558                         ieee80211_wake_queues(hw);
1559                         mutex_unlock(&priv->fw_mutex);
1560
1561                         return rc;
1562                 }
1563
1564                 priv->fw_mutex_owner = current;
1565         }
1566
1567         priv->fw_mutex_depth++;
1568
1569         return 0;
1570 }
1571
1572 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1573 {
1574         struct mwl8k_priv *priv = hw->priv;
1575
1576         if (!--priv->fw_mutex_depth) {
1577                 ieee80211_wake_queues(hw);
1578                 priv->fw_mutex_owner = NULL;
1579                 mutex_unlock(&priv->fw_mutex);
1580         }
1581 }
1582
1583
1584 /*
1585  * Command processing.
1586  */
1587
1588 /* Timeout firmware commands after 10s */
1589 #define MWL8K_CMD_TIMEOUT_MS    10000
1590
1591 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1592 {
1593         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1594         struct mwl8k_priv *priv = hw->priv;
1595         void __iomem *regs = priv->regs;
1596         dma_addr_t dma_addr;
1597         unsigned int dma_size;
1598         int rc;
1599         unsigned long timeout = 0;
1600         u8 buf[32];
1601
1602         cmd->result = (__force __le16) 0xffff;
1603         dma_size = le16_to_cpu(cmd->length);
1604         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1605                                   PCI_DMA_BIDIRECTIONAL);
1606         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1607                 return -ENOMEM;
1608
1609         rc = mwl8k_fw_lock(hw);
1610         if (rc) {
1611                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1612                                                 PCI_DMA_BIDIRECTIONAL);
1613                 return rc;
1614         }
1615
1616         priv->hostcmd_wait = &cmd_wait;
1617         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1618         iowrite32(MWL8K_H2A_INT_DOORBELL,
1619                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1620         iowrite32(MWL8K_H2A_INT_DUMMY,
1621                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1622
1623         timeout = wait_for_completion_timeout(&cmd_wait,
1624                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1625
1626         priv->hostcmd_wait = NULL;
1627
1628         mwl8k_fw_unlock(hw);
1629
1630         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1631                                         PCI_DMA_BIDIRECTIONAL);
1632
1633         if (!timeout) {
1634                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1635                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1636                           MWL8K_CMD_TIMEOUT_MS);
1637                 rc = -ETIMEDOUT;
1638         } else {
1639                 int ms;
1640
1641                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1642
1643                 rc = cmd->result ? -EINVAL : 0;
1644                 if (rc)
1645                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1646                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1647                                   le16_to_cpu(cmd->result));
1648                 else if (ms > 2000)
1649                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1650                                      mwl8k_cmd_name(cmd->code,
1651                                                     buf, sizeof(buf)),
1652                                      ms);
1653         }
1654
1655         return rc;
1656 }
1657
1658 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1659                                  struct ieee80211_vif *vif,
1660                                  struct mwl8k_cmd_pkt *cmd)
1661 {
1662         if (vif != NULL)
1663                 cmd->macid = MWL8K_VIF(vif)->macid;
1664         return mwl8k_post_cmd(hw, cmd);
1665 }
1666
1667 /*
1668  * Setup code shared between STA and AP firmware images.
1669  */
1670 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1671 {
1672         struct mwl8k_priv *priv = hw->priv;
1673
1674         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1675         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1676
1677         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1678         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1679
1680         priv->band_24.band = IEEE80211_BAND_2GHZ;
1681         priv->band_24.channels = priv->channels_24;
1682         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1683         priv->band_24.bitrates = priv->rates_24;
1684         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1685
1686         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1687 }
1688
1689 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1690 {
1691         struct mwl8k_priv *priv = hw->priv;
1692
1693         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1694         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1695
1696         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1697         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1698
1699         priv->band_50.band = IEEE80211_BAND_5GHZ;
1700         priv->band_50.channels = priv->channels_50;
1701         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1702         priv->band_50.bitrates = priv->rates_50;
1703         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1704
1705         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1706 }
1707
1708 /*
1709  * CMD_GET_HW_SPEC (STA version).
1710  */
1711 struct mwl8k_cmd_get_hw_spec_sta {
1712         struct mwl8k_cmd_pkt header;
1713         __u8 hw_rev;
1714         __u8 host_interface;
1715         __le16 num_mcaddrs;
1716         __u8 perm_addr[ETH_ALEN];
1717         __le16 region_code;
1718         __le32 fw_rev;
1719         __le32 ps_cookie;
1720         __le32 caps;
1721         __u8 mcs_bitmap[16];
1722         __le32 rx_queue_ptr;
1723         __le32 num_tx_queues;
1724         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1725         __le32 caps2;
1726         __le32 num_tx_desc_per_queue;
1727         __le32 total_rxd;
1728 } __packed;
1729
1730 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1731 #define MWL8K_CAP_GREENFIELD            0x08000000
1732 #define MWL8K_CAP_AMPDU                 0x04000000
1733 #define MWL8K_CAP_RX_STBC               0x01000000
1734 #define MWL8K_CAP_TX_STBC               0x00800000
1735 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1736 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1737 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1738 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1739 #define MWL8K_CAP_DELAY_BA              0x00003000
1740 #define MWL8K_CAP_MIMO                  0x00000200
1741 #define MWL8K_CAP_40MHZ                 0x00000100
1742 #define MWL8K_CAP_BAND_MASK             0x00000007
1743 #define MWL8K_CAP_5GHZ                  0x00000004
1744 #define MWL8K_CAP_2GHZ4                 0x00000001
1745
1746 static void
1747 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1748                   struct ieee80211_supported_band *band, u32 cap)
1749 {
1750         int rx_streams;
1751         int tx_streams;
1752
1753         band->ht_cap.ht_supported = 1;
1754
1755         if (cap & MWL8K_CAP_MAX_AMSDU)
1756                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1757         if (cap & MWL8K_CAP_GREENFIELD)
1758                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1759         if (cap & MWL8K_CAP_AMPDU) {
1760                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1761                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1762                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1763         }
1764         if (cap & MWL8K_CAP_RX_STBC)
1765                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1766         if (cap & MWL8K_CAP_TX_STBC)
1767                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1768         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1769                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1770         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1771                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1772         if (cap & MWL8K_CAP_DELAY_BA)
1773                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1774         if (cap & MWL8K_CAP_40MHZ)
1775                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1776
1777         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1778         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1779
1780         band->ht_cap.mcs.rx_mask[0] = 0xff;
1781         if (rx_streams >= 2)
1782                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1783         if (rx_streams >= 3)
1784                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1785         band->ht_cap.mcs.rx_mask[4] = 0x01;
1786         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1787
1788         if (rx_streams != tx_streams) {
1789                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1790                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1791                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1792         }
1793 }
1794
1795 static void
1796 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1797 {
1798         struct mwl8k_priv *priv = hw->priv;
1799
1800         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1801                 mwl8k_setup_2ghz_band(hw);
1802                 if (caps & MWL8K_CAP_MIMO)
1803                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1804         }
1805
1806         if (caps & MWL8K_CAP_5GHZ) {
1807                 mwl8k_setup_5ghz_band(hw);
1808                 if (caps & MWL8K_CAP_MIMO)
1809                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1810         }
1811 }
1812
1813 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1814 {
1815         struct mwl8k_priv *priv = hw->priv;
1816         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1817         int rc;
1818         int i;
1819
1820         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1821         if (cmd == NULL)
1822                 return -ENOMEM;
1823
1824         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1825         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1826
1827         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1828         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1829         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1830         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1831         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1832                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1833         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1834         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1835
1836         rc = mwl8k_post_cmd(hw, &cmd->header);
1837
1838         if (!rc) {
1839                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1840                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1841                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1842                 priv->hw_rev = cmd->hw_rev;
1843                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1844                 priv->ap_macids_supported = 0x00000000;
1845                 priv->sta_macids_supported = 0x00000001;
1846         }
1847
1848         kfree(cmd);
1849         return rc;
1850 }
1851
1852 /*
1853  * CMD_GET_HW_SPEC (AP version).
1854  */
1855 struct mwl8k_cmd_get_hw_spec_ap {
1856         struct mwl8k_cmd_pkt header;
1857         __u8 hw_rev;
1858         __u8 host_interface;
1859         __le16 num_wcb;
1860         __le16 num_mcaddrs;
1861         __u8 perm_addr[ETH_ALEN];
1862         __le16 region_code;
1863         __le16 num_antenna;
1864         __le32 fw_rev;
1865         __le32 wcbbase0;
1866         __le32 rxwrptr;
1867         __le32 rxrdptr;
1868         __le32 ps_cookie;
1869         __le32 wcbbase1;
1870         __le32 wcbbase2;
1871         __le32 wcbbase3;
1872         __le32 fw_api_version;
1873 } __packed;
1874
1875 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1876 {
1877         struct mwl8k_priv *priv = hw->priv;
1878         struct mwl8k_cmd_get_hw_spec_ap *cmd;
1879         int rc;
1880         u32 api_version;
1881
1882         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1883         if (cmd == NULL)
1884                 return -ENOMEM;
1885
1886         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1887         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1888
1889         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1890         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1891
1892         rc = mwl8k_post_cmd(hw, &cmd->header);
1893
1894         if (!rc) {
1895                 int off;
1896
1897                 api_version = le32_to_cpu(cmd->fw_api_version);
1898                 if (priv->device_info->fw_api_ap != api_version) {
1899                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
1900                                "  Expected %d got %d.\n", MWL8K_NAME,
1901                                priv->device_info->part_name,
1902                                priv->device_info->fw_api_ap,
1903                                api_version);
1904                         rc = -EINVAL;
1905                         goto done;
1906                 }
1907                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1908                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1909                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1910                 priv->hw_rev = cmd->hw_rev;
1911                 mwl8k_setup_2ghz_band(hw);
1912                 priv->ap_macids_supported = 0x000000ff;
1913                 priv->sta_macids_supported = 0x00000000;
1914
1915                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1916                 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
1917
1918                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1919                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
1920
1921                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1922                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
1923
1924                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1925                 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
1926
1927                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1928                 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
1929
1930                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1931                 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
1932         }
1933
1934 done:
1935         kfree(cmd);
1936         return rc;
1937 }
1938
1939 /*
1940  * CMD_SET_HW_SPEC.
1941  */
1942 struct mwl8k_cmd_set_hw_spec {
1943         struct mwl8k_cmd_pkt header;
1944         __u8 hw_rev;
1945         __u8 host_interface;
1946         __le16 num_mcaddrs;
1947         __u8 perm_addr[ETH_ALEN];
1948         __le16 region_code;
1949         __le32 fw_rev;
1950         __le32 ps_cookie;
1951         __le32 caps;
1952         __le32 rx_queue_ptr;
1953         __le32 num_tx_queues;
1954         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1955         __le32 flags;
1956         __le32 num_tx_desc_per_queue;
1957         __le32 total_rxd;
1958 } __packed;
1959
1960 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
1961 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
1962 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
1963
1964 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1965 {
1966         struct mwl8k_priv *priv = hw->priv;
1967         struct mwl8k_cmd_set_hw_spec *cmd;
1968         int rc;
1969         int i;
1970
1971         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1972         if (cmd == NULL)
1973                 return -ENOMEM;
1974
1975         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1976         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1977
1978         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1979         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1980         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1981         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1982                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1983         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
1984                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
1985                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
1986         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1987         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1988
1989         rc = mwl8k_post_cmd(hw, &cmd->header);
1990         kfree(cmd);
1991
1992         return rc;
1993 }
1994
1995 /*
1996  * CMD_MAC_MULTICAST_ADR.
1997  */
1998 struct mwl8k_cmd_mac_multicast_adr {
1999         struct mwl8k_cmd_pkt header;
2000         __le16 action;
2001         __le16 numaddr;
2002         __u8 addr[0][ETH_ALEN];
2003 };
2004
2005 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2006 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2007 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2008 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2009
2010 static struct mwl8k_cmd_pkt *
2011 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2012                               struct netdev_hw_addr_list *mc_list)
2013 {
2014         struct mwl8k_priv *priv = hw->priv;
2015         struct mwl8k_cmd_mac_multicast_adr *cmd;
2016         int size;
2017         int mc_count = 0;
2018
2019         if (mc_list)
2020                 mc_count = netdev_hw_addr_list_count(mc_list);
2021
2022         if (allmulti || mc_count > priv->num_mcaddrs) {
2023                 allmulti = 1;
2024                 mc_count = 0;
2025         }
2026
2027         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2028
2029         cmd = kzalloc(size, GFP_ATOMIC);
2030         if (cmd == NULL)
2031                 return NULL;
2032
2033         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2034         cmd->header.length = cpu_to_le16(size);
2035         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2036                                   MWL8K_ENABLE_RX_BROADCAST);
2037
2038         if (allmulti) {
2039                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2040         } else if (mc_count) {
2041                 struct netdev_hw_addr *ha;
2042                 int i = 0;
2043
2044                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2045                 cmd->numaddr = cpu_to_le16(mc_count);
2046                 netdev_hw_addr_list_for_each(ha, mc_list) {
2047                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2048                 }
2049         }
2050
2051         return &cmd->header;
2052 }
2053
2054 /*
2055  * CMD_GET_STAT.
2056  */
2057 struct mwl8k_cmd_get_stat {
2058         struct mwl8k_cmd_pkt header;
2059         __le32 stats[64];
2060 } __packed;
2061
2062 #define MWL8K_STAT_ACK_FAILURE  9
2063 #define MWL8K_STAT_RTS_FAILURE  12
2064 #define MWL8K_STAT_FCS_ERROR    24
2065 #define MWL8K_STAT_RTS_SUCCESS  11
2066
2067 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2068                               struct ieee80211_low_level_stats *stats)
2069 {
2070         struct mwl8k_cmd_get_stat *cmd;
2071         int rc;
2072
2073         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2074         if (cmd == NULL)
2075                 return -ENOMEM;
2076
2077         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2078         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2079
2080         rc = mwl8k_post_cmd(hw, &cmd->header);
2081         if (!rc) {
2082                 stats->dot11ACKFailureCount =
2083                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2084                 stats->dot11RTSFailureCount =
2085                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2086                 stats->dot11FCSErrorCount =
2087                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2088                 stats->dot11RTSSuccessCount =
2089                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2090         }
2091         kfree(cmd);
2092
2093         return rc;
2094 }
2095
2096 /*
2097  * CMD_RADIO_CONTROL.
2098  */
2099 struct mwl8k_cmd_radio_control {
2100         struct mwl8k_cmd_pkt header;
2101         __le16 action;
2102         __le16 control;
2103         __le16 radio_on;
2104 } __packed;
2105
2106 static int
2107 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2108 {
2109         struct mwl8k_priv *priv = hw->priv;
2110         struct mwl8k_cmd_radio_control *cmd;
2111         int rc;
2112
2113         if (enable == priv->radio_on && !force)
2114                 return 0;
2115
2116         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2117         if (cmd == NULL)
2118                 return -ENOMEM;
2119
2120         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2121         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2122         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2123         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2124         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2125
2126         rc = mwl8k_post_cmd(hw, &cmd->header);
2127         kfree(cmd);
2128
2129         if (!rc)
2130                 priv->radio_on = enable;
2131
2132         return rc;
2133 }
2134
2135 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2136 {
2137         return mwl8k_cmd_radio_control(hw, 0, 0);
2138 }
2139
2140 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2141 {
2142         return mwl8k_cmd_radio_control(hw, 1, 0);
2143 }
2144
2145 static int
2146 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2147 {
2148         struct mwl8k_priv *priv = hw->priv;
2149
2150         priv->radio_short_preamble = short_preamble;
2151
2152         return mwl8k_cmd_radio_control(hw, 1, 1);
2153 }
2154
2155 /*
2156  * CMD_RF_TX_POWER.
2157  */
2158 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2159
2160 struct mwl8k_cmd_rf_tx_power {
2161         struct mwl8k_cmd_pkt header;
2162         __le16 action;
2163         __le16 support_level;
2164         __le16 current_level;
2165         __le16 reserved;
2166         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2167 } __packed;
2168
2169 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2170 {
2171         struct mwl8k_cmd_rf_tx_power *cmd;
2172         int rc;
2173
2174         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2175         if (cmd == NULL)
2176                 return -ENOMEM;
2177
2178         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2179         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2180         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2181         cmd->support_level = cpu_to_le16(dBm);
2182
2183         rc = mwl8k_post_cmd(hw, &cmd->header);
2184         kfree(cmd);
2185
2186         return rc;
2187 }
2188
2189 /*
2190  * CMD_TX_POWER.
2191  */
2192 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2193
2194 struct mwl8k_cmd_tx_power {
2195         struct mwl8k_cmd_pkt header;
2196         __le16 action;
2197         __le16 band;
2198         __le16 channel;
2199         __le16 bw;
2200         __le16 sub_ch;
2201         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2202 } __attribute__((packed));
2203
2204 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2205                                      struct ieee80211_conf *conf,
2206                                      unsigned short pwr)
2207 {
2208         struct ieee80211_channel *channel = conf->channel;
2209         struct mwl8k_cmd_tx_power *cmd;
2210         int rc;
2211         int i;
2212
2213         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2214         if (cmd == NULL)
2215                 return -ENOMEM;
2216
2217         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2218         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2219         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2220
2221         if (channel->band == IEEE80211_BAND_2GHZ)
2222                 cmd->band = cpu_to_le16(0x1);
2223         else if (channel->band == IEEE80211_BAND_5GHZ)
2224                 cmd->band = cpu_to_le16(0x4);
2225
2226         cmd->channel = channel->hw_value;
2227
2228         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2229             conf->channel_type == NL80211_CHAN_HT20) {
2230                 cmd->bw = cpu_to_le16(0x2);
2231         } else {
2232                 cmd->bw = cpu_to_le16(0x4);
2233                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2234                         cmd->sub_ch = cpu_to_le16(0x3);
2235                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2236                         cmd->sub_ch = cpu_to_le16(0x1);
2237         }
2238
2239         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2240                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2241
2242         rc = mwl8k_post_cmd(hw, &cmd->header);
2243         kfree(cmd);
2244
2245         return rc;
2246 }
2247
2248 /*
2249  * CMD_RF_ANTENNA.
2250  */
2251 struct mwl8k_cmd_rf_antenna {
2252         struct mwl8k_cmd_pkt header;
2253         __le16 antenna;
2254         __le16 mode;
2255 } __packed;
2256
2257 #define MWL8K_RF_ANTENNA_RX             1
2258 #define MWL8K_RF_ANTENNA_TX             2
2259
2260 static int
2261 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2262 {
2263         struct mwl8k_cmd_rf_antenna *cmd;
2264         int rc;
2265
2266         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2267         if (cmd == NULL)
2268                 return -ENOMEM;
2269
2270         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2271         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2272         cmd->antenna = cpu_to_le16(antenna);
2273         cmd->mode = cpu_to_le16(mask);
2274
2275         rc = mwl8k_post_cmd(hw, &cmd->header);
2276         kfree(cmd);
2277
2278         return rc;
2279 }
2280
2281 /*
2282  * CMD_SET_BEACON.
2283  */
2284 struct mwl8k_cmd_set_beacon {
2285         struct mwl8k_cmd_pkt header;
2286         __le16 beacon_len;
2287         __u8 beacon[0];
2288 };
2289
2290 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2291                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2292 {
2293         struct mwl8k_cmd_set_beacon *cmd;
2294         int rc;
2295
2296         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2297         if (cmd == NULL)
2298                 return -ENOMEM;
2299
2300         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2301         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2302         cmd->beacon_len = cpu_to_le16(len);
2303         memcpy(cmd->beacon, beacon, len);
2304
2305         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2306         kfree(cmd);
2307
2308         return rc;
2309 }
2310
2311 /*
2312  * CMD_SET_PRE_SCAN.
2313  */
2314 struct mwl8k_cmd_set_pre_scan {
2315         struct mwl8k_cmd_pkt header;
2316 } __packed;
2317
2318 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2319 {
2320         struct mwl8k_cmd_set_pre_scan *cmd;
2321         int rc;
2322
2323         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2324         if (cmd == NULL)
2325                 return -ENOMEM;
2326
2327         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2328         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2329
2330         rc = mwl8k_post_cmd(hw, &cmd->header);
2331         kfree(cmd);
2332
2333         return rc;
2334 }
2335
2336 /*
2337  * CMD_SET_POST_SCAN.
2338  */
2339 struct mwl8k_cmd_set_post_scan {
2340         struct mwl8k_cmd_pkt header;
2341         __le32 isibss;
2342         __u8 bssid[ETH_ALEN];
2343 } __packed;
2344
2345 static int
2346 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2347 {
2348         struct mwl8k_cmd_set_post_scan *cmd;
2349         int rc;
2350
2351         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2352         if (cmd == NULL)
2353                 return -ENOMEM;
2354
2355         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2356         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2357         cmd->isibss = 0;
2358         memcpy(cmd->bssid, mac, ETH_ALEN);
2359
2360         rc = mwl8k_post_cmd(hw, &cmd->header);
2361         kfree(cmd);
2362
2363         return rc;
2364 }
2365
2366 /*
2367  * CMD_SET_RF_CHANNEL.
2368  */
2369 struct mwl8k_cmd_set_rf_channel {
2370         struct mwl8k_cmd_pkt header;
2371         __le16 action;
2372         __u8 current_channel;
2373         __le32 channel_flags;
2374 } __packed;
2375
2376 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2377                                     struct ieee80211_conf *conf)
2378 {
2379         struct ieee80211_channel *channel = conf->channel;
2380         struct mwl8k_cmd_set_rf_channel *cmd;
2381         int rc;
2382
2383         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2384         if (cmd == NULL)
2385                 return -ENOMEM;
2386
2387         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2388         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2389         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2390         cmd->current_channel = channel->hw_value;
2391
2392         if (channel->band == IEEE80211_BAND_2GHZ)
2393                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2394         else if (channel->band == IEEE80211_BAND_5GHZ)
2395                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2396
2397         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2398             conf->channel_type == NL80211_CHAN_HT20)
2399                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2400         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2401                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2402         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2403                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2404
2405         rc = mwl8k_post_cmd(hw, &cmd->header);
2406         kfree(cmd);
2407
2408         return rc;
2409 }
2410
2411 /*
2412  * CMD_SET_AID.
2413  */
2414 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2415 #define MWL8K_FRAME_PROT_11G                            0x07
2416 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2417 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2418
2419 struct mwl8k_cmd_update_set_aid {
2420         struct  mwl8k_cmd_pkt header;
2421         __le16  aid;
2422
2423          /* AP's MAC address (BSSID) */
2424         __u8    bssid[ETH_ALEN];
2425         __le16  protection_mode;
2426         __u8    supp_rates[14];
2427 } __packed;
2428
2429 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2430 {
2431         int i;
2432         int j;
2433
2434         /*
2435          * Clear nonstandard rates 4 and 13.
2436          */
2437         mask &= 0x1fef;
2438
2439         for (i = 0, j = 0; i < 14; i++) {
2440                 if (mask & (1 << i))
2441                         rates[j++] = mwl8k_rates_24[i].hw_value;
2442         }
2443 }
2444
2445 static int
2446 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2447                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2448 {
2449         struct mwl8k_cmd_update_set_aid *cmd;
2450         u16 prot_mode;
2451         int rc;
2452
2453         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2454         if (cmd == NULL)
2455                 return -ENOMEM;
2456
2457         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2458         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2459         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2460         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2461
2462         if (vif->bss_conf.use_cts_prot) {
2463                 prot_mode = MWL8K_FRAME_PROT_11G;
2464         } else {
2465                 switch (vif->bss_conf.ht_operation_mode &
2466                         IEEE80211_HT_OP_MODE_PROTECTION) {
2467                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2468                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2469                         break;
2470                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2471                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2472                         break;
2473                 default:
2474                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2475                         break;
2476                 }
2477         }
2478         cmd->protection_mode = cpu_to_le16(prot_mode);
2479
2480         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2481
2482         rc = mwl8k_post_cmd(hw, &cmd->header);
2483         kfree(cmd);
2484
2485         return rc;
2486 }
2487
2488 /*
2489  * CMD_SET_RATE.
2490  */
2491 struct mwl8k_cmd_set_rate {
2492         struct  mwl8k_cmd_pkt header;
2493         __u8    legacy_rates[14];
2494
2495         /* Bitmap for supported MCS codes.  */
2496         __u8    mcs_set[16];
2497         __u8    reserved[16];
2498 } __packed;
2499
2500 static int
2501 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2502                    u32 legacy_rate_mask, u8 *mcs_rates)
2503 {
2504         struct mwl8k_cmd_set_rate *cmd;
2505         int rc;
2506
2507         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2508         if (cmd == NULL)
2509                 return -ENOMEM;
2510
2511         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2512         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2513         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2514         memcpy(cmd->mcs_set, mcs_rates, 16);
2515
2516         rc = mwl8k_post_cmd(hw, &cmd->header);
2517         kfree(cmd);
2518
2519         return rc;
2520 }
2521
2522 /*
2523  * CMD_FINALIZE_JOIN.
2524  */
2525 #define MWL8K_FJ_BEACON_MAXLEN  128
2526
2527 struct mwl8k_cmd_finalize_join {
2528         struct mwl8k_cmd_pkt header;
2529         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2530         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2531 } __packed;
2532
2533 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2534                                    int framelen, int dtim)
2535 {
2536         struct mwl8k_cmd_finalize_join *cmd;
2537         struct ieee80211_mgmt *payload = frame;
2538         int payload_len;
2539         int rc;
2540
2541         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2542         if (cmd == NULL)
2543                 return -ENOMEM;
2544
2545         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2546         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2547         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2548
2549         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2550         if (payload_len < 0)
2551                 payload_len = 0;
2552         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2553                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2554
2555         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2556
2557         rc = mwl8k_post_cmd(hw, &cmd->header);
2558         kfree(cmd);
2559
2560         return rc;
2561 }
2562
2563 /*
2564  * CMD_SET_RTS_THRESHOLD.
2565  */
2566 struct mwl8k_cmd_set_rts_threshold {
2567         struct mwl8k_cmd_pkt header;
2568         __le16 action;
2569         __le16 threshold;
2570 } __packed;
2571
2572 static int
2573 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2574 {
2575         struct mwl8k_cmd_set_rts_threshold *cmd;
2576         int rc;
2577
2578         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2579         if (cmd == NULL)
2580                 return -ENOMEM;
2581
2582         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2583         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2584         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2585         cmd->threshold = cpu_to_le16(rts_thresh);
2586
2587         rc = mwl8k_post_cmd(hw, &cmd->header);
2588         kfree(cmd);
2589
2590         return rc;
2591 }
2592
2593 /*
2594  * CMD_SET_SLOT.
2595  */
2596 struct mwl8k_cmd_set_slot {
2597         struct mwl8k_cmd_pkt header;
2598         __le16 action;
2599         __u8 short_slot;
2600 } __packed;
2601
2602 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2603 {
2604         struct mwl8k_cmd_set_slot *cmd;
2605         int rc;
2606
2607         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2608         if (cmd == NULL)
2609                 return -ENOMEM;
2610
2611         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2612         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2613         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2614         cmd->short_slot = short_slot_time;
2615
2616         rc = mwl8k_post_cmd(hw, &cmd->header);
2617         kfree(cmd);
2618
2619         return rc;
2620 }
2621
2622 /*
2623  * CMD_SET_EDCA_PARAMS.
2624  */
2625 struct mwl8k_cmd_set_edca_params {
2626         struct mwl8k_cmd_pkt header;
2627
2628         /* See MWL8K_SET_EDCA_XXX below */
2629         __le16 action;
2630
2631         /* TX opportunity in units of 32 us */
2632         __le16 txop;
2633
2634         union {
2635                 struct {
2636                         /* Log exponent of max contention period: 0...15 */
2637                         __le32 log_cw_max;
2638
2639                         /* Log exponent of min contention period: 0...15 */
2640                         __le32 log_cw_min;
2641
2642                         /* Adaptive interframe spacing in units of 32us */
2643                         __u8 aifs;
2644
2645                         /* TX queue to configure */
2646                         __u8 txq;
2647                 } ap;
2648                 struct {
2649                         /* Log exponent of max contention period: 0...15 */
2650                         __u8 log_cw_max;
2651
2652                         /* Log exponent of min contention period: 0...15 */
2653                         __u8 log_cw_min;
2654
2655                         /* Adaptive interframe spacing in units of 32us */
2656                         __u8 aifs;
2657
2658                         /* TX queue to configure */
2659                         __u8 txq;
2660                 } sta;
2661         };
2662 } __packed;
2663
2664 #define MWL8K_SET_EDCA_CW       0x01
2665 #define MWL8K_SET_EDCA_TXOP     0x02
2666 #define MWL8K_SET_EDCA_AIFS     0x04
2667
2668 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2669                                  MWL8K_SET_EDCA_TXOP | \
2670                                  MWL8K_SET_EDCA_AIFS)
2671
2672 static int
2673 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2674                           __u16 cw_min, __u16 cw_max,
2675                           __u8 aifs, __u16 txop)
2676 {
2677         struct mwl8k_priv *priv = hw->priv;
2678         struct mwl8k_cmd_set_edca_params *cmd;
2679         int rc;
2680
2681         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2682         if (cmd == NULL)
2683                 return -ENOMEM;
2684
2685         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2686         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2687         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2688         cmd->txop = cpu_to_le16(txop);
2689         if (priv->ap_fw) {
2690                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2691                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2692                 cmd->ap.aifs = aifs;
2693                 cmd->ap.txq = qnum;
2694         } else {
2695                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2696                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2697                 cmd->sta.aifs = aifs;
2698                 cmd->sta.txq = qnum;
2699         }
2700
2701         rc = mwl8k_post_cmd(hw, &cmd->header);
2702         kfree(cmd);
2703
2704         return rc;
2705 }
2706
2707 /*
2708  * CMD_SET_WMM_MODE.
2709  */
2710 struct mwl8k_cmd_set_wmm_mode {
2711         struct mwl8k_cmd_pkt header;
2712         __le16 action;
2713 } __packed;
2714
2715 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2716 {
2717         struct mwl8k_priv *priv = hw->priv;
2718         struct mwl8k_cmd_set_wmm_mode *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_SET_WMM_MODE);
2726         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2727         cmd->action = cpu_to_le16(!!enable);
2728
2729         rc = mwl8k_post_cmd(hw, &cmd->header);
2730         kfree(cmd);
2731
2732         if (!rc)
2733                 priv->wmm_enabled = enable;
2734
2735         return rc;
2736 }
2737
2738 /*
2739  * CMD_MIMO_CONFIG.
2740  */
2741 struct mwl8k_cmd_mimo_config {
2742         struct mwl8k_cmd_pkt header;
2743         __le32 action;
2744         __u8 rx_antenna_map;
2745         __u8 tx_antenna_map;
2746 } __packed;
2747
2748 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2749 {
2750         struct mwl8k_cmd_mimo_config *cmd;
2751         int rc;
2752
2753         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2754         if (cmd == NULL)
2755                 return -ENOMEM;
2756
2757         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2758         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2759         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2760         cmd->rx_antenna_map = rx;
2761         cmd->tx_antenna_map = tx;
2762
2763         rc = mwl8k_post_cmd(hw, &cmd->header);
2764         kfree(cmd);
2765
2766         return rc;
2767 }
2768
2769 /*
2770  * CMD_USE_FIXED_RATE (STA version).
2771  */
2772 struct mwl8k_cmd_use_fixed_rate_sta {
2773         struct mwl8k_cmd_pkt header;
2774         __le32 action;
2775         __le32 allow_rate_drop;
2776         __le32 num_rates;
2777         struct {
2778                 __le32 is_ht_rate;
2779                 __le32 enable_retry;
2780                 __le32 rate;
2781                 __le32 retry_count;
2782         } rate_entry[8];
2783         __le32 rate_type;
2784         __le32 reserved1;
2785         __le32 reserved2;
2786 } __packed;
2787
2788 #define MWL8K_USE_AUTO_RATE     0x0002
2789 #define MWL8K_UCAST_RATE        0
2790
2791 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2792 {
2793         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2794         int rc;
2795
2796         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2797         if (cmd == NULL)
2798                 return -ENOMEM;
2799
2800         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2801         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2802         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2803         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2804
2805         rc = mwl8k_post_cmd(hw, &cmd->header);
2806         kfree(cmd);
2807
2808         return rc;
2809 }
2810
2811 /*
2812  * CMD_USE_FIXED_RATE (AP version).
2813  */
2814 struct mwl8k_cmd_use_fixed_rate_ap {
2815         struct mwl8k_cmd_pkt header;
2816         __le32 action;
2817         __le32 allow_rate_drop;
2818         __le32 num_rates;
2819         struct mwl8k_rate_entry_ap {
2820                 __le32 is_ht_rate;
2821                 __le32 enable_retry;
2822                 __le32 rate;
2823                 __le32 retry_count;
2824         } rate_entry[4];
2825         u8 multicast_rate;
2826         u8 multicast_rate_type;
2827         u8 management_rate;
2828 } __packed;
2829
2830 static int
2831 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2832 {
2833         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2834         int rc;
2835
2836         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2837         if (cmd == NULL)
2838                 return -ENOMEM;
2839
2840         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2841         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2842         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2843         cmd->multicast_rate = mcast;
2844         cmd->management_rate = mgmt;
2845
2846         rc = mwl8k_post_cmd(hw, &cmd->header);
2847         kfree(cmd);
2848
2849         return rc;
2850 }
2851
2852 /*
2853  * CMD_ENABLE_SNIFFER.
2854  */
2855 struct mwl8k_cmd_enable_sniffer {
2856         struct mwl8k_cmd_pkt header;
2857         __le32 action;
2858 } __packed;
2859
2860 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2861 {
2862         struct mwl8k_cmd_enable_sniffer *cmd;
2863         int rc;
2864
2865         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2866         if (cmd == NULL)
2867                 return -ENOMEM;
2868
2869         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2870         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2871         cmd->action = cpu_to_le32(!!enable);
2872
2873         rc = mwl8k_post_cmd(hw, &cmd->header);
2874         kfree(cmd);
2875
2876         return rc;
2877 }
2878
2879 /*
2880  * CMD_SET_MAC_ADDR.
2881  */
2882 struct mwl8k_cmd_set_mac_addr {
2883         struct mwl8k_cmd_pkt header;
2884         union {
2885                 struct {
2886                         __le16 mac_type;
2887                         __u8 mac_addr[ETH_ALEN];
2888                 } mbss;
2889                 __u8 mac_addr[ETH_ALEN];
2890         };
2891 } __packed;
2892
2893 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
2894 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
2895 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
2896 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
2897
2898 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
2899                                   struct ieee80211_vif *vif, u8 *mac)
2900 {
2901         struct mwl8k_priv *priv = hw->priv;
2902         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2903         struct mwl8k_cmd_set_mac_addr *cmd;
2904         int mac_type;
2905         int rc;
2906
2907         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2908         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
2909                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
2910                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
2911                 else
2912                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
2913         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
2914                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
2915                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2916                 else
2917                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
2918         }
2919
2920         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2921         if (cmd == NULL)
2922                 return -ENOMEM;
2923
2924         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2925         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2926         if (priv->ap_fw) {
2927                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
2928                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2929         } else {
2930                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2931         }
2932
2933         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2934         kfree(cmd);
2935
2936         return rc;
2937 }
2938
2939 /*
2940  * CMD_SET_RATEADAPT_MODE.
2941  */
2942 struct mwl8k_cmd_set_rate_adapt_mode {
2943         struct mwl8k_cmd_pkt header;
2944         __le16 action;
2945         __le16 mode;
2946 } __packed;
2947
2948 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2949 {
2950         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2951         int rc;
2952
2953         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2954         if (cmd == NULL)
2955                 return -ENOMEM;
2956
2957         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2958         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2959         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2960         cmd->mode = cpu_to_le16(mode);
2961
2962         rc = mwl8k_post_cmd(hw, &cmd->header);
2963         kfree(cmd);
2964
2965         return rc;
2966 }
2967
2968 /*
2969  * CMD_BSS_START.
2970  */
2971 struct mwl8k_cmd_bss_start {
2972         struct mwl8k_cmd_pkt header;
2973         __le32 enable;
2974 } __packed;
2975
2976 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
2977                                struct ieee80211_vif *vif, int enable)
2978 {
2979         struct mwl8k_cmd_bss_start *cmd;
2980         int rc;
2981
2982         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2983         if (cmd == NULL)
2984                 return -ENOMEM;
2985
2986         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
2987         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2988         cmd->enable = cpu_to_le32(enable);
2989
2990         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2991         kfree(cmd);
2992
2993         return rc;
2994 }
2995
2996 /*
2997  * CMD_SET_NEW_STN.
2998  */
2999 struct mwl8k_cmd_set_new_stn {
3000         struct mwl8k_cmd_pkt header;
3001         __le16 aid;
3002         __u8 mac_addr[6];
3003         __le16 stn_id;
3004         __le16 action;
3005         __le16 rsvd;
3006         __le32 legacy_rates;
3007         __u8 ht_rates[4];
3008         __le16 cap_info;
3009         __le16 ht_capabilities_info;
3010         __u8 mac_ht_param_info;
3011         __u8 rev;
3012         __u8 control_channel;
3013         __u8 add_channel;
3014         __le16 op_mode;
3015         __le16 stbc;
3016         __u8 add_qos_info;
3017         __u8 is_qos_sta;
3018         __le32 fw_sta_ptr;
3019 } __packed;
3020
3021 #define MWL8K_STA_ACTION_ADD            0
3022 #define MWL8K_STA_ACTION_REMOVE         2
3023
3024 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3025                                      struct ieee80211_vif *vif,
3026                                      struct ieee80211_sta *sta)
3027 {
3028         struct mwl8k_cmd_set_new_stn *cmd;
3029         u32 rates;
3030         int rc;
3031
3032         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3033         if (cmd == NULL)
3034                 return -ENOMEM;
3035
3036         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3037         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3038         cmd->aid = cpu_to_le16(sta->aid);
3039         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3040         cmd->stn_id = cpu_to_le16(sta->aid);
3041         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3042         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3043                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3044         else
3045                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3046         cmd->legacy_rates = cpu_to_le32(rates);
3047         if (sta->ht_cap.ht_supported) {
3048                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3049                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3050                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3051                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3052                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3053                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3054                         ((sta->ht_cap.ampdu_density & 7) << 2);
3055                 cmd->is_qos_sta = 1;
3056         }
3057
3058         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3059         kfree(cmd);
3060
3061         return rc;
3062 }
3063
3064 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3065                                           struct ieee80211_vif *vif)
3066 {
3067         struct mwl8k_cmd_set_new_stn *cmd;
3068         int rc;
3069
3070         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3071         if (cmd == NULL)
3072                 return -ENOMEM;
3073
3074         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3075         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3076         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3077
3078         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3079         kfree(cmd);
3080
3081         return rc;
3082 }
3083
3084 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3085                                      struct ieee80211_vif *vif, u8 *addr)
3086 {
3087         struct mwl8k_cmd_set_new_stn *cmd;
3088         int rc;
3089
3090         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3091         if (cmd == NULL)
3092                 return -ENOMEM;
3093
3094         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3095         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3096         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3097         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3098
3099         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3100         kfree(cmd);
3101
3102         return rc;
3103 }
3104
3105 /*
3106  * CMD_UPDATE_STADB.
3107  */
3108 struct ewc_ht_info {
3109         __le16  control1;
3110         __le16  control2;
3111         __le16  control3;
3112 } __packed;
3113
3114 struct peer_capability_info {
3115         /* Peer type - AP vs. STA.  */
3116         __u8    peer_type;
3117
3118         /* Basic 802.11 capabilities from assoc resp.  */
3119         __le16  basic_caps;
3120
3121         /* Set if peer supports 802.11n high throughput (HT).  */
3122         __u8    ht_support;
3123
3124         /* Valid if HT is supported.  */
3125         __le16  ht_caps;
3126         __u8    extended_ht_caps;
3127         struct ewc_ht_info      ewc_info;
3128
3129         /* Legacy rate table. Intersection of our rates and peer rates.  */
3130         __u8    legacy_rates[12];
3131
3132         /* HT rate table. Intersection of our rates and peer rates.  */
3133         __u8    ht_rates[16];
3134         __u8    pad[16];
3135
3136         /* If set, interoperability mode, no proprietary extensions.  */
3137         __u8    interop;
3138         __u8    pad2;
3139         __u8    station_id;
3140         __le16  amsdu_enabled;
3141 } __packed;
3142
3143 struct mwl8k_cmd_update_stadb {
3144         struct mwl8k_cmd_pkt header;
3145
3146         /* See STADB_ACTION_TYPE */
3147         __le32  action;
3148
3149         /* Peer MAC address */
3150         __u8    peer_addr[ETH_ALEN];
3151
3152         __le32  reserved;
3153
3154         /* Peer info - valid during add/update.  */
3155         struct peer_capability_info     peer_info;
3156 } __packed;
3157
3158 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3159 #define MWL8K_STA_DB_DEL_ENTRY          2
3160
3161 /* Peer Entry flags - used to define the type of the peer node */
3162 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3163
3164 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3165                                       struct ieee80211_vif *vif,
3166                                       struct ieee80211_sta *sta)
3167 {
3168         struct mwl8k_cmd_update_stadb *cmd;
3169         struct peer_capability_info *p;
3170         u32 rates;
3171         int rc;
3172
3173         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3174         if (cmd == NULL)
3175                 return -ENOMEM;
3176
3177         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3178         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3179         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3180         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3181
3182         p = &cmd->peer_info;
3183         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3184         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3185         p->ht_support = sta->ht_cap.ht_supported;
3186         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3187         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3188                 ((sta->ht_cap.ampdu_density & 7) << 2);
3189         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3190                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3191         else
3192                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3193         legacy_rate_mask_to_array(p->legacy_rates, rates);
3194         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3195         p->interop = 1;
3196         p->amsdu_enabled = 0;
3197
3198         rc = mwl8k_post_cmd(hw, &cmd->header);
3199         kfree(cmd);
3200
3201         return rc ? rc : p->station_id;
3202 }
3203
3204 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3205                                       struct ieee80211_vif *vif, u8 *addr)
3206 {
3207         struct mwl8k_cmd_update_stadb *cmd;
3208         int rc;
3209
3210         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3211         if (cmd == NULL)
3212                 return -ENOMEM;
3213
3214         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3215         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3216         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3217         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3218
3219         rc = mwl8k_post_cmd(hw, &cmd->header);
3220         kfree(cmd);
3221
3222         return rc;
3223 }
3224
3225
3226 /*
3227  * Interrupt handling.
3228  */
3229 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3230 {
3231         struct ieee80211_hw *hw = dev_id;
3232         struct mwl8k_priv *priv = hw->priv;
3233         u32 status;
3234
3235         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3236         if (!status)
3237                 return IRQ_NONE;
3238
3239         if (status & MWL8K_A2H_INT_TX_DONE) {
3240                 status &= ~MWL8K_A2H_INT_TX_DONE;
3241                 tasklet_schedule(&priv->poll_tx_task);
3242         }
3243
3244         if (status & MWL8K_A2H_INT_RX_READY) {
3245                 status &= ~MWL8K_A2H_INT_RX_READY;
3246                 tasklet_schedule(&priv->poll_rx_task);
3247         }
3248
3249         if (status)
3250                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3251
3252         if (status & MWL8K_A2H_INT_OPC_DONE) {
3253                 if (priv->hostcmd_wait != NULL)
3254                         complete(priv->hostcmd_wait);
3255         }
3256
3257         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3258                 if (!mutex_is_locked(&priv->fw_mutex) &&
3259                     priv->radio_on && priv->pending_tx_pkts)
3260                         mwl8k_tx_start(priv);
3261         }
3262
3263         return IRQ_HANDLED;
3264 }
3265
3266 static void mwl8k_tx_poll(unsigned long data)
3267 {
3268         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3269         struct mwl8k_priv *priv = hw->priv;
3270         int limit;
3271         int i;
3272
3273         limit = 32;
3274
3275         spin_lock_bh(&priv->tx_lock);
3276
3277         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3278                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3279
3280         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3281                 complete(priv->tx_wait);
3282                 priv->tx_wait = NULL;
3283         }
3284
3285         spin_unlock_bh(&priv->tx_lock);
3286
3287         if (limit) {
3288                 writel(~MWL8K_A2H_INT_TX_DONE,
3289                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3290         } else {
3291                 tasklet_schedule(&priv->poll_tx_task);
3292         }
3293 }
3294
3295 static void mwl8k_rx_poll(unsigned long data)
3296 {
3297         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3298         struct mwl8k_priv *priv = hw->priv;
3299         int limit;
3300
3301         limit = 32;
3302         limit -= rxq_process(hw, 0, limit);
3303         limit -= rxq_refill(hw, 0, limit);
3304
3305         if (limit) {
3306                 writel(~MWL8K_A2H_INT_RX_READY,
3307                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3308         } else {
3309                 tasklet_schedule(&priv->poll_rx_task);
3310         }
3311 }
3312
3313
3314 /*
3315  * Core driver operations.
3316  */
3317 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3318 {
3319         struct mwl8k_priv *priv = hw->priv;
3320         int index = skb_get_queue_mapping(skb);
3321         int rc;
3322
3323         if (!priv->radio_on) {
3324                 wiphy_debug(hw->wiphy,
3325                             "dropped TX frame since radio disabled\n");
3326                 dev_kfree_skb(skb);
3327                 return NETDEV_TX_OK;
3328         }
3329
3330         rc = mwl8k_txq_xmit(hw, index, skb);
3331
3332         return rc;
3333 }
3334
3335 static int mwl8k_start(struct ieee80211_hw *hw)
3336 {
3337         struct mwl8k_priv *priv = hw->priv;
3338         int rc;
3339
3340         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3341                          IRQF_SHARED, MWL8K_NAME, hw);
3342         if (rc) {
3343                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3344                 return -EIO;
3345         }
3346
3347         /* Enable TX reclaim and RX tasklets.  */
3348         tasklet_enable(&priv->poll_tx_task);
3349         tasklet_enable(&priv->poll_rx_task);
3350
3351         /* Enable interrupts */
3352         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3353
3354         rc = mwl8k_fw_lock(hw);
3355         if (!rc) {
3356                 rc = mwl8k_cmd_radio_enable(hw);
3357
3358                 if (!priv->ap_fw) {
3359                         if (!rc)
3360                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3361
3362                         if (!rc)
3363                                 rc = mwl8k_cmd_set_pre_scan(hw);
3364
3365                         if (!rc)
3366                                 rc = mwl8k_cmd_set_post_scan(hw,
3367                                                 "\x00\x00\x00\x00\x00\x00");
3368                 }
3369
3370                 if (!rc)
3371                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3372
3373                 if (!rc)
3374                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3375
3376                 mwl8k_fw_unlock(hw);
3377         }
3378
3379         if (rc) {
3380                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3381                 free_irq(priv->pdev->irq, hw);
3382                 tasklet_disable(&priv->poll_tx_task);
3383                 tasklet_disable(&priv->poll_rx_task);
3384         }
3385
3386         return rc;
3387 }
3388
3389 static void mwl8k_stop(struct ieee80211_hw *hw)
3390 {
3391         struct mwl8k_priv *priv = hw->priv;
3392         int i;
3393
3394         mwl8k_cmd_radio_disable(hw);
3395
3396         ieee80211_stop_queues(hw);
3397
3398         /* Disable interrupts */
3399         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3400         free_irq(priv->pdev->irq, hw);
3401
3402         /* Stop finalize join worker */
3403         cancel_work_sync(&priv->finalize_join_worker);
3404         if (priv->beacon_skb != NULL)
3405                 dev_kfree_skb(priv->beacon_skb);
3406
3407         /* Stop TX reclaim and RX tasklets.  */
3408         tasklet_disable(&priv->poll_tx_task);
3409         tasklet_disable(&priv->poll_rx_task);
3410
3411         /* Return all skbs to mac80211 */
3412         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3413                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3414 }
3415
3416 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3417
3418 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3419                                struct ieee80211_vif *vif)
3420 {
3421         struct mwl8k_priv *priv = hw->priv;
3422         struct mwl8k_vif *mwl8k_vif;
3423         u32 macids_supported;
3424         int macid, rc;
3425         struct mwl8k_device_info *di;
3426
3427         /*
3428          * Reject interface creation if sniffer mode is active, as
3429          * STA operation is mutually exclusive with hardware sniffer
3430          * mode.  (Sniffer mode is only used on STA firmware.)
3431          */
3432         if (priv->sniffer_enabled) {
3433                 wiphy_info(hw->wiphy,
3434                            "unable to create STA interface because sniffer mode is enabled\n");
3435                 return -EINVAL;
3436         }
3437
3438         di = priv->device_info;
3439         switch (vif->type) {
3440         case NL80211_IFTYPE_AP:
3441                 if (!priv->ap_fw && di->fw_image_ap) {
3442                         /* we must load the ap fw to meet this request */
3443                         if (!list_empty(&priv->vif_list))
3444                                 return -EBUSY;
3445                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3446                         if (rc)
3447                                 return rc;
3448                 }
3449                 macids_supported = priv->ap_macids_supported;
3450                 break;
3451         case NL80211_IFTYPE_STATION:
3452                 if (priv->ap_fw && di->fw_image_sta) {
3453                         /* we must load the sta fw to meet this request */
3454                         if (!list_empty(&priv->vif_list))
3455                                 return -EBUSY;
3456                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3457                         if (rc)
3458                                 return rc;
3459                 }
3460                 macids_supported = priv->sta_macids_supported;
3461                 break;
3462         default:
3463                 return -EINVAL;
3464         }
3465
3466         macid = ffs(macids_supported & ~priv->macids_used);
3467         if (!macid--)
3468                 return -EBUSY;
3469
3470         /* Setup driver private area. */
3471         mwl8k_vif = MWL8K_VIF(vif);
3472         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3473         mwl8k_vif->vif = vif;
3474         mwl8k_vif->macid = macid;
3475         mwl8k_vif->seqno = 0;
3476
3477         /* Set the mac address.  */
3478         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3479
3480         if (priv->ap_fw)
3481                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3482
3483         priv->macids_used |= 1 << mwl8k_vif->macid;
3484         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3485
3486         return 0;
3487 }
3488
3489 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3490                                    struct ieee80211_vif *vif)
3491 {
3492         struct mwl8k_priv *priv = hw->priv;
3493         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3494
3495         if (priv->ap_fw)
3496                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3497
3498         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3499
3500         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3501         list_del(&mwl8k_vif->list);
3502 }
3503
3504 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3505 {
3506         struct ieee80211_conf *conf = &hw->conf;
3507         struct mwl8k_priv *priv = hw->priv;
3508         int rc;
3509
3510         if (conf->flags & IEEE80211_CONF_IDLE) {
3511                 mwl8k_cmd_radio_disable(hw);
3512                 return 0;
3513         }
3514
3515         rc = mwl8k_fw_lock(hw);
3516         if (rc)
3517                 return rc;
3518
3519         rc = mwl8k_cmd_radio_enable(hw);
3520         if (rc)
3521                 goto out;
3522
3523         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3524         if (rc)
3525                 goto out;
3526
3527         if (conf->power_level > 18)
3528                 conf->power_level = 18;
3529
3530         if (priv->ap_fw) {
3531                 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3532                 if (rc)
3533                         goto out;
3534
3535                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3536                 if (!rc)
3537                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3538         } else {
3539                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3540                 if (rc)
3541                         goto out;
3542                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3543         }
3544
3545 out:
3546         mwl8k_fw_unlock(hw);
3547
3548         return rc;
3549 }
3550
3551 static void
3552 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3553                            struct ieee80211_bss_conf *info, u32 changed)
3554 {
3555         struct mwl8k_priv *priv = hw->priv;
3556         u32 ap_legacy_rates;
3557         u8 ap_mcs_rates[16];
3558         int rc;
3559
3560         if (mwl8k_fw_lock(hw))
3561                 return;
3562
3563         /*
3564          * No need to capture a beacon if we're no longer associated.
3565          */
3566         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3567                 priv->capture_beacon = false;
3568
3569         /*
3570          * Get the AP's legacy and MCS rates.
3571          */
3572         if (vif->bss_conf.assoc) {
3573                 struct ieee80211_sta *ap;
3574
3575                 rcu_read_lock();
3576
3577                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3578                 if (ap == NULL) {
3579                         rcu_read_unlock();
3580                         goto out;
3581                 }
3582
3583                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3584                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3585                 } else {
3586                         ap_legacy_rates =
3587                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3588                 }
3589                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3590
3591                 rcu_read_unlock();
3592         }
3593
3594         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3595                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3596                 if (rc)
3597                         goto out;
3598
3599                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
3600                 if (rc)
3601                         goto out;
3602         }
3603
3604         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3605                 rc = mwl8k_set_radio_preamble(hw,
3606                                 vif->bss_conf.use_short_preamble);
3607                 if (rc)
3608                         goto out;
3609         }
3610
3611         if (changed & BSS_CHANGED_ERP_SLOT) {
3612                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3613                 if (rc)
3614                         goto out;
3615         }
3616
3617         if (vif->bss_conf.assoc &&
3618             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
3619                         BSS_CHANGED_HT))) {
3620                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3621                 if (rc)
3622                         goto out;
3623         }
3624
3625         if (vif->bss_conf.assoc &&
3626             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3627                 /*
3628                  * Finalize the join.  Tell rx handler to process
3629                  * next beacon from our BSSID.
3630                  */
3631                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3632                 priv->capture_beacon = true;
3633         }
3634
3635 out:
3636         mwl8k_fw_unlock(hw);
3637 }
3638
3639 static void
3640 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3641                           struct ieee80211_bss_conf *info, u32 changed)
3642 {
3643         int rc;
3644
3645         if (mwl8k_fw_lock(hw))
3646                 return;
3647
3648         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3649                 rc = mwl8k_set_radio_preamble(hw,
3650                                 vif->bss_conf.use_short_preamble);
3651                 if (rc)
3652                         goto out;
3653         }
3654
3655         if (changed & BSS_CHANGED_BASIC_RATES) {
3656                 int idx;
3657                 int rate;
3658
3659                 /*
3660                  * Use lowest supported basic rate for multicasts
3661                  * and management frames (such as probe responses --
3662                  * beacons will always go out at 1 Mb/s).
3663                  */
3664                 idx = ffs(vif->bss_conf.basic_rates);
3665                 if (idx)
3666                         idx--;
3667
3668                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3669                         rate = mwl8k_rates_24[idx].hw_value;
3670                 else
3671                         rate = mwl8k_rates_50[idx].hw_value;
3672
3673                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
3674         }
3675
3676         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
3677                 struct sk_buff *skb;
3678
3679                 skb = ieee80211_beacon_get(hw, vif);
3680                 if (skb != NULL) {
3681                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
3682                         kfree_skb(skb);
3683                 }
3684         }
3685
3686         if (changed & BSS_CHANGED_BEACON_ENABLED)
3687                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
3688
3689 out:
3690         mwl8k_fw_unlock(hw);
3691 }
3692
3693 static void
3694 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3695                        struct ieee80211_bss_conf *info, u32 changed)
3696 {
3697         struct mwl8k_priv *priv = hw->priv;
3698
3699         if (!priv->ap_fw)
3700                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
3701         else
3702                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
3703 }
3704
3705 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3706                                    struct netdev_hw_addr_list *mc_list)
3707 {
3708         struct mwl8k_cmd_pkt *cmd;
3709
3710         /*
3711          * Synthesize and return a command packet that programs the
3712          * hardware multicast address filter.  At this point we don't
3713          * know whether FIF_ALLMULTI is being requested, but if it is,
3714          * we'll end up throwing this packet away and creating a new
3715          * one in mwl8k_configure_filter().
3716          */
3717         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
3718
3719         return (unsigned long)cmd;
3720 }
3721
3722 static int
3723 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3724                                unsigned int changed_flags,
3725                                unsigned int *total_flags)
3726 {
3727         struct mwl8k_priv *priv = hw->priv;
3728
3729         /*
3730          * Hardware sniffer mode is mutually exclusive with STA
3731          * operation, so refuse to enable sniffer mode if a STA
3732          * interface is active.
3733          */
3734         if (!list_empty(&priv->vif_list)) {
3735                 if (net_ratelimit())
3736                         wiphy_info(hw->wiphy,
3737                                    "not enabling sniffer mode because STA interface is active\n");
3738                 return 0;
3739         }
3740
3741         if (!priv->sniffer_enabled) {
3742                 if (mwl8k_cmd_enable_sniffer(hw, 1))
3743                         return 0;
3744                 priv->sniffer_enabled = true;
3745         }
3746
3747         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3748                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3749                         FIF_OTHER_BSS;
3750
3751         return 1;
3752 }
3753
3754 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
3755 {
3756         if (!list_empty(&priv->vif_list))
3757                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
3758
3759         return NULL;
3760 }
3761
3762 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3763                                    unsigned int changed_flags,
3764                                    unsigned int *total_flags,
3765                                    u64 multicast)
3766 {
3767         struct mwl8k_priv *priv = hw->priv;
3768         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3769
3770         /*
3771          * AP firmware doesn't allow fine-grained control over
3772          * the receive filter.
3773          */
3774         if (priv->ap_fw) {
3775                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3776                 kfree(cmd);
3777                 return;
3778         }
3779
3780         /*
3781          * Enable hardware sniffer mode if FIF_CONTROL or
3782          * FIF_OTHER_BSS is requested.
3783          */
3784         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3785             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3786                 kfree(cmd);
3787                 return;
3788         }
3789
3790         /* Clear unsupported feature flags */
3791         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3792
3793         if (mwl8k_fw_lock(hw)) {
3794                 kfree(cmd);
3795                 return;
3796         }
3797
3798         if (priv->sniffer_enabled) {
3799                 mwl8k_cmd_enable_sniffer(hw, 0);
3800                 priv->sniffer_enabled = false;
3801         }
3802
3803         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3804                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3805                         /*
3806                          * Disable the BSS filter.
3807                          */
3808                         mwl8k_cmd_set_pre_scan(hw);
3809                 } else {
3810                         struct mwl8k_vif *mwl8k_vif;
3811                         const u8 *bssid;
3812
3813                         /*
3814                          * Enable the BSS filter.
3815                          *
3816                          * If there is an active STA interface, use that
3817                          * interface's BSSID, otherwise use a dummy one
3818                          * (where the OUI part needs to be nonzero for
3819                          * the BSSID to be accepted by POST_SCAN).
3820                          */
3821                         mwl8k_vif = mwl8k_first_vif(priv);
3822                         if (mwl8k_vif != NULL)
3823                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
3824                         else
3825                                 bssid = "\x01\x00\x00\x00\x00\x00";
3826
3827                         mwl8k_cmd_set_post_scan(hw, bssid);
3828                 }
3829         }
3830
3831         /*
3832          * If FIF_ALLMULTI is being requested, throw away the command
3833          * packet that ->prepare_multicast() built and replace it with
3834          * a command packet that enables reception of all multicast
3835          * packets.
3836          */
3837         if (*total_flags & FIF_ALLMULTI) {
3838                 kfree(cmd);
3839                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
3840         }
3841
3842         if (cmd != NULL) {
3843                 mwl8k_post_cmd(hw, cmd);
3844                 kfree(cmd);
3845         }
3846
3847         mwl8k_fw_unlock(hw);
3848 }
3849
3850 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3851 {
3852         return mwl8k_cmd_set_rts_threshold(hw, value);
3853 }
3854
3855 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
3856                             struct ieee80211_vif *vif,
3857                             struct ieee80211_sta *sta)
3858 {
3859         struct mwl8k_priv *priv = hw->priv;
3860
3861         if (priv->ap_fw)
3862                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
3863         else
3864                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
3865 }
3866
3867 static int mwl8k_sta_add(struct ieee80211_hw *hw,
3868                          struct ieee80211_vif *vif,
3869                          struct ieee80211_sta *sta)
3870 {
3871         struct mwl8k_priv *priv = hw->priv;
3872         int ret;
3873
3874         if (!priv->ap_fw) {
3875                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
3876                 if (ret >= 0) {
3877                         MWL8K_STA(sta)->peer_id = ret;
3878                         return 0;
3879                 }
3880
3881                 return ret;
3882         }
3883
3884         return mwl8k_cmd_set_new_stn_add(hw, vif, sta);
3885 }
3886
3887 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3888                          const struct ieee80211_tx_queue_params *params)
3889 {
3890         struct mwl8k_priv *priv = hw->priv;
3891         int rc;
3892
3893         rc = mwl8k_fw_lock(hw);
3894         if (!rc) {
3895                 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
3896                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
3897
3898                 if (!priv->wmm_enabled)
3899                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3900
3901                 if (!rc)
3902                         rc = mwl8k_cmd_set_edca_params(hw, queue,
3903                                                        params->cw_min,
3904                                                        params->cw_max,
3905                                                        params->aifs,
3906                                                        params->txop);
3907
3908                 mwl8k_fw_unlock(hw);
3909         }
3910
3911         return rc;
3912 }
3913
3914 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3915                            struct ieee80211_low_level_stats *stats)
3916 {
3917         return mwl8k_cmd_get_stat(hw, stats);
3918 }
3919
3920 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
3921                                 struct survey_info *survey)
3922 {
3923         struct mwl8k_priv *priv = hw->priv;
3924         struct ieee80211_conf *conf = &hw->conf;
3925
3926         if (idx != 0)
3927                 return -ENOENT;
3928
3929         survey->channel = conf->channel;
3930         survey->filled = SURVEY_INFO_NOISE_DBM;
3931         survey->noise = priv->noise;
3932
3933         return 0;
3934 }
3935
3936 static int
3937 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3938                    enum ieee80211_ampdu_mlme_action action,
3939                    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3940 {
3941         switch (action) {
3942         case IEEE80211_AMPDU_RX_START:
3943         case IEEE80211_AMPDU_RX_STOP:
3944                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
3945                         return -ENOTSUPP;
3946                 return 0;
3947         default:
3948                 return -ENOTSUPP;
3949         }
3950 }
3951
3952 static const struct ieee80211_ops mwl8k_ops = {
3953         .tx                     = mwl8k_tx,
3954         .start                  = mwl8k_start,
3955         .stop                   = mwl8k_stop,
3956         .add_interface          = mwl8k_add_interface,
3957         .remove_interface       = mwl8k_remove_interface,
3958         .config                 = mwl8k_config,
3959         .bss_info_changed       = mwl8k_bss_info_changed,
3960         .prepare_multicast      = mwl8k_prepare_multicast,
3961         .configure_filter       = mwl8k_configure_filter,
3962         .set_rts_threshold      = mwl8k_set_rts_threshold,
3963         .sta_add                = mwl8k_sta_add,
3964         .sta_remove             = mwl8k_sta_remove,
3965         .conf_tx                = mwl8k_conf_tx,
3966         .get_stats              = mwl8k_get_stats,
3967         .get_survey             = mwl8k_get_survey,
3968         .ampdu_action           = mwl8k_ampdu_action,
3969 };
3970
3971 static void mwl8k_finalize_join_worker(struct work_struct *work)
3972 {
3973         struct mwl8k_priv *priv =
3974                 container_of(work, struct mwl8k_priv, finalize_join_worker);
3975         struct sk_buff *skb = priv->beacon_skb;
3976         struct ieee80211_mgmt *mgmt = (void *)skb->data;
3977         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
3978         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
3979                                          mgmt->u.beacon.variable, len);
3980         int dtim_period = 1;
3981
3982         if (tim && tim[1] >= 2)
3983                 dtim_period = tim[3];
3984
3985         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
3986
3987         dev_kfree_skb(skb);
3988         priv->beacon_skb = NULL;
3989 }
3990
3991 enum {
3992         MWL8363 = 0,
3993         MWL8687,
3994         MWL8366,
3995 };
3996
3997 #define MWL8K_8366_AP_FW_API 1
3998 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
3999 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
4000
4001 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
4002         [MWL8363] = {
4003                 .part_name      = "88w8363",
4004                 .helper_image   = "mwl8k/helper_8363.fw",
4005                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
4006         },
4007         [MWL8687] = {
4008                 .part_name      = "88w8687",
4009                 .helper_image   = "mwl8k/helper_8687.fw",
4010                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
4011         },
4012         [MWL8366] = {
4013                 .part_name      = "88w8366",
4014                 .helper_image   = "mwl8k/helper_8366.fw",
4015                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
4016                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4017                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
4018                 .ap_rxd_ops     = &rxd_8366_ap_ops,
4019         },
4020 };
4021
4022 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4023 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4024 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4025 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4026 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4027 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4028 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4029
4030 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4031         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4032         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4033         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4034         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4035         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4036         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4037         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4038         { },
4039 };
4040 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4041
4042 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4043 {
4044         int rc;
4045         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4046                "Trying alternative firmware %s\n", pci_name(priv->pdev),
4047                priv->fw_pref, priv->fw_alt);
4048         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4049         if (rc) {
4050                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4051                        pci_name(priv->pdev), priv->fw_alt);
4052                 return rc;
4053         }
4054         return 0;
4055 }
4056
4057 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4058 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4059 {
4060         struct mwl8k_priv *priv = context;
4061         struct mwl8k_device_info *di = priv->device_info;
4062         int rc;
4063
4064         switch (priv->fw_state) {
4065         case FW_STATE_INIT:
4066                 if (!fw) {
4067                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4068                                pci_name(priv->pdev), di->helper_image);
4069                         goto fail;
4070                 }
4071                 priv->fw_helper = fw;
4072                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4073                                       true);
4074                 if (rc && priv->fw_alt) {
4075                         rc = mwl8k_request_alt_fw(priv);
4076                         if (rc)
4077                                 goto fail;
4078                         priv->fw_state = FW_STATE_LOADING_ALT;
4079                 } else if (rc)
4080                         goto fail;
4081                 else
4082                         priv->fw_state = FW_STATE_LOADING_PREF;
4083                 break;
4084
4085         case FW_STATE_LOADING_PREF:
4086                 if (!fw) {
4087                         if (priv->fw_alt) {
4088                                 rc = mwl8k_request_alt_fw(priv);
4089                                 if (rc)
4090                                         goto fail;
4091                                 priv->fw_state = FW_STATE_LOADING_ALT;
4092                         } else
4093                                 goto fail;
4094                 } else {
4095                         priv->fw_ucode = fw;
4096                         rc = mwl8k_firmware_load_success(priv);
4097                         if (rc)
4098                                 goto fail;
4099                         else
4100                                 complete(&priv->firmware_loading_complete);
4101                 }
4102                 break;
4103
4104         case FW_STATE_LOADING_ALT:
4105                 if (!fw) {
4106                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4107                                pci_name(priv->pdev), di->helper_image);
4108                         goto fail;
4109                 }
4110                 priv->fw_ucode = fw;
4111                 rc = mwl8k_firmware_load_success(priv);
4112                 if (rc)
4113                         goto fail;
4114                 else
4115                         complete(&priv->firmware_loading_complete);
4116                 break;
4117
4118         default:
4119                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4120                        MWL8K_NAME, priv->fw_state);
4121                 BUG_ON(1);
4122         }
4123
4124         return;
4125
4126 fail:
4127         priv->fw_state = FW_STATE_ERROR;
4128         complete(&priv->firmware_loading_complete);
4129         device_release_driver(&priv->pdev->dev);
4130         mwl8k_release_firmware(priv);
4131 }
4132
4133 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4134                                bool nowait)
4135 {
4136         struct mwl8k_priv *priv = hw->priv;
4137         int rc;
4138
4139         /* Reset firmware and hardware */
4140         mwl8k_hw_reset(priv);
4141
4142         /* Ask userland hotplug daemon for the device firmware */
4143         rc = mwl8k_request_firmware(priv, fw_image, nowait);
4144         if (rc) {
4145                 wiphy_err(hw->wiphy, "Firmware files not found\n");
4146                 return rc;
4147         }
4148
4149         if (nowait)
4150                 return rc;
4151
4152         /* Load firmware into hardware */
4153         rc = mwl8k_load_firmware(hw);
4154         if (rc)
4155                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4156
4157         /* Reclaim memory once firmware is successfully loaded */
4158         mwl8k_release_firmware(priv);
4159
4160         return rc;
4161 }
4162
4163 /* initialize hw after successfully loading a firmware image */
4164 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4165 {
4166         struct mwl8k_priv *priv = hw->priv;
4167         int rc = 0;
4168         int i;
4169
4170         if (priv->ap_fw) {
4171                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4172                 if (priv->rxd_ops == NULL) {
4173                         wiphy_err(hw->wiphy,
4174                                   "Driver does not have AP firmware image support for this hardware\n");
4175                         goto err_stop_firmware;
4176                 }
4177         } else {
4178                 priv->rxd_ops = &rxd_sta_ops;
4179         }
4180
4181         priv->sniffer_enabled = false;
4182         priv->wmm_enabled = false;
4183         priv->pending_tx_pkts = 0;
4184
4185         rc = mwl8k_rxq_init(hw, 0);
4186         if (rc)
4187                 goto err_stop_firmware;
4188         rxq_refill(hw, 0, INT_MAX);
4189
4190         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4191                 rc = mwl8k_txq_init(hw, i);
4192                 if (rc)
4193                         goto err_free_queues;
4194         }
4195
4196         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4197         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4198         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4199                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4200         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4201
4202         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4203                          IRQF_SHARED, MWL8K_NAME, hw);
4204         if (rc) {
4205                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4206                 goto err_free_queues;
4207         }
4208
4209         /*
4210          * Temporarily enable interrupts.  Initial firmware host
4211          * commands use interrupts and avoid polling.  Disable
4212          * interrupts when done.
4213          */
4214         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4215
4216         /* Get config data, mac addrs etc */
4217         if (priv->ap_fw) {
4218                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4219                 if (!rc)
4220                         rc = mwl8k_cmd_set_hw_spec(hw);
4221         } else {
4222                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4223         }
4224         if (rc) {
4225                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4226                 goto err_free_irq;
4227         }
4228
4229         /* Turn radio off */
4230         rc = mwl8k_cmd_radio_disable(hw);
4231         if (rc) {
4232                 wiphy_err(hw->wiphy, "Cannot disable\n");
4233                 goto err_free_irq;
4234         }
4235
4236         /* Clear MAC address */
4237         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4238         if (rc) {
4239                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4240                 goto err_free_irq;
4241         }
4242
4243         /* Disable interrupts */
4244         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4245         free_irq(priv->pdev->irq, hw);
4246
4247         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4248                    priv->device_info->part_name,
4249                    priv->hw_rev, hw->wiphy->perm_addr,
4250                    priv->ap_fw ? "AP" : "STA",
4251                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4252                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4253
4254         return 0;
4255
4256 err_free_irq:
4257         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4258         free_irq(priv->pdev->irq, hw);
4259
4260 err_free_queues:
4261         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4262                 mwl8k_txq_deinit(hw, i);
4263         mwl8k_rxq_deinit(hw, 0);
4264
4265 err_stop_firmware:
4266         mwl8k_hw_reset(priv);
4267
4268         return rc;
4269 }
4270
4271 /*
4272  * invoke mwl8k_reload_firmware to change the firmware image after the device
4273  * has already been registered
4274  */
4275 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4276 {
4277         int i, rc = 0;
4278         struct mwl8k_priv *priv = hw->priv;
4279
4280         mwl8k_stop(hw);
4281         mwl8k_rxq_deinit(hw, 0);
4282
4283         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4284                 mwl8k_txq_deinit(hw, i);
4285
4286         rc = mwl8k_init_firmware(hw, fw_image, false);
4287         if (rc)
4288                 goto fail;
4289
4290         rc = mwl8k_probe_hw(hw);
4291         if (rc)
4292                 goto fail;
4293
4294         rc = mwl8k_start(hw);
4295         if (rc)
4296                 goto fail;
4297
4298         rc = mwl8k_config(hw, ~0);
4299         if (rc)
4300                 goto fail;
4301
4302         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4303                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4304                 if (rc)
4305                         goto fail;
4306         }
4307
4308         return rc;
4309
4310 fail:
4311         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4312         return rc;
4313 }
4314
4315 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4316 {
4317         struct ieee80211_hw *hw = priv->hw;
4318         int i, rc;
4319
4320         rc = mwl8k_load_firmware(hw);
4321         mwl8k_release_firmware(priv);
4322         if (rc) {
4323                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4324                 return rc;
4325         }
4326
4327         /*
4328          * Extra headroom is the size of the required DMA header
4329          * minus the size of the smallest 802.11 frame (CTS frame).
4330          */
4331         hw->extra_tx_headroom =
4332                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4333
4334         hw->channel_change_time = 10;
4335
4336         hw->queues = MWL8K_TX_QUEUES;
4337
4338         /* Set rssi values to dBm */
4339         hw->flags |= IEEE80211_HW_SIGNAL_DBM;
4340         hw->vif_data_size = sizeof(struct mwl8k_vif);
4341         hw->sta_data_size = sizeof(struct mwl8k_sta);
4342
4343         priv->macids_used = 0;
4344         INIT_LIST_HEAD(&priv->vif_list);
4345
4346         /* Set default radio state and preamble */
4347         priv->radio_on = 0;
4348         priv->radio_short_preamble = 0;
4349
4350         /* Finalize join worker */
4351         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4352
4353         /* TX reclaim and RX tasklets.  */
4354         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4355         tasklet_disable(&priv->poll_tx_task);
4356         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4357         tasklet_disable(&priv->poll_rx_task);
4358
4359         /* Power management cookie */
4360         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4361         if (priv->cookie == NULL)
4362                 return -ENOMEM;
4363
4364         mutex_init(&priv->fw_mutex);
4365         priv->fw_mutex_owner = NULL;
4366         priv->fw_mutex_depth = 0;
4367         priv->hostcmd_wait = NULL;
4368
4369         spin_lock_init(&priv->tx_lock);
4370
4371         priv->tx_wait = NULL;
4372
4373         rc = mwl8k_probe_hw(hw);
4374         if (rc)
4375                 goto err_free_cookie;
4376
4377         hw->wiphy->interface_modes = 0;
4378         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4379                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4380         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4381                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4382
4383         rc = ieee80211_register_hw(hw);
4384         if (rc) {
4385                 wiphy_err(hw->wiphy, "Cannot register device\n");
4386                 goto err_unprobe_hw;
4387         }
4388
4389         return 0;
4390
4391 err_unprobe_hw:
4392         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4393                 mwl8k_txq_deinit(hw, i);
4394         mwl8k_rxq_deinit(hw, 0);
4395
4396 err_free_cookie:
4397         if (priv->cookie != NULL)
4398                 pci_free_consistent(priv->pdev, 4,
4399                                 priv->cookie, priv->cookie_dma);
4400
4401         return rc;
4402 }
4403 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4404                                  const struct pci_device_id *id)
4405 {
4406         static int printed_version;
4407         struct ieee80211_hw *hw;
4408         struct mwl8k_priv *priv;
4409         struct mwl8k_device_info *di;
4410         int rc;
4411
4412         if (!printed_version) {
4413                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4414                 printed_version = 1;
4415         }
4416
4417
4418         rc = pci_enable_device(pdev);
4419         if (rc) {
4420                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4421                        MWL8K_NAME);
4422                 return rc;
4423         }
4424
4425         rc = pci_request_regions(pdev, MWL8K_NAME);
4426         if (rc) {
4427                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4428                        MWL8K_NAME);
4429                 goto err_disable_device;
4430         }
4431
4432         pci_set_master(pdev);
4433
4434
4435         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4436         if (hw == NULL) {
4437                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4438                 rc = -ENOMEM;
4439                 goto err_free_reg;
4440         }
4441
4442         SET_IEEE80211_DEV(hw, &pdev->dev);
4443         pci_set_drvdata(pdev, hw);
4444
4445         priv = hw->priv;
4446         priv->hw = hw;
4447         priv->pdev = pdev;
4448         priv->device_info = &mwl8k_info_tbl[id->driver_data];
4449
4450
4451         priv->sram = pci_iomap(pdev, 0, 0x10000);
4452         if (priv->sram == NULL) {
4453                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4454                 goto err_iounmap;
4455         }
4456
4457         /*
4458          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4459          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4460          */
4461         priv->regs = pci_iomap(pdev, 1, 0x10000);
4462         if (priv->regs == NULL) {
4463                 priv->regs = pci_iomap(pdev, 2, 0x10000);
4464                 if (priv->regs == NULL) {
4465                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
4466                         goto err_iounmap;
4467                 }
4468         }
4469
4470         /*
4471          * Choose the initial fw image depending on user input.  If a second
4472          * image is available, make it the alternative image that will be
4473          * loaded if the first one fails.
4474          */
4475         init_completion(&priv->firmware_loading_complete);
4476         di = priv->device_info;
4477         if (ap_mode_default && di->fw_image_ap) {
4478                 priv->fw_pref = di->fw_image_ap;
4479                 priv->fw_alt = di->fw_image_sta;
4480         } else if (!ap_mode_default && di->fw_image_sta) {
4481                 priv->fw_pref = di->fw_image_sta;
4482                 priv->fw_alt = di->fw_image_ap;
4483         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4484                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
4485                 priv->fw_pref = di->fw_image_sta;
4486         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4487                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
4488                 priv->fw_pref = di->fw_image_ap;
4489         }
4490         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4491         if (rc)
4492                 goto err_stop_firmware;
4493         return rc;
4494
4495 err_stop_firmware:
4496         mwl8k_hw_reset(priv);
4497
4498 err_iounmap:
4499         if (priv->regs != NULL)
4500                 pci_iounmap(pdev, priv->regs);
4501
4502         if (priv->sram != NULL)
4503                 pci_iounmap(pdev, priv->sram);
4504
4505         pci_set_drvdata(pdev, NULL);
4506         ieee80211_free_hw(hw);
4507
4508 err_free_reg:
4509         pci_release_regions(pdev);
4510
4511 err_disable_device:
4512         pci_disable_device(pdev);
4513
4514         return rc;
4515 }
4516
4517 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4518 {
4519         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4520 }
4521
4522 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4523 {
4524         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4525         struct mwl8k_priv *priv;
4526         int i;
4527
4528         if (hw == NULL)
4529                 return;
4530         priv = hw->priv;
4531
4532         wait_for_completion(&priv->firmware_loading_complete);
4533
4534         if (priv->fw_state == FW_STATE_ERROR) {
4535                 mwl8k_hw_reset(priv);
4536                 goto unmap;
4537         }
4538
4539         ieee80211_stop_queues(hw);
4540
4541         ieee80211_unregister_hw(hw);
4542
4543         /* Remove TX reclaim and RX tasklets.  */
4544         tasklet_kill(&priv->poll_tx_task);
4545         tasklet_kill(&priv->poll_rx_task);
4546
4547         /* Stop hardware */
4548         mwl8k_hw_reset(priv);
4549
4550         /* Return all skbs to mac80211 */
4551         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4552                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4553
4554         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4555                 mwl8k_txq_deinit(hw, i);
4556
4557         mwl8k_rxq_deinit(hw, 0);
4558
4559         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4560
4561 unmap:
4562         pci_iounmap(pdev, priv->regs);
4563         pci_iounmap(pdev, priv->sram);
4564         pci_set_drvdata(pdev, NULL);
4565         ieee80211_free_hw(hw);
4566         pci_release_regions(pdev);
4567         pci_disable_device(pdev);
4568 }
4569
4570 static struct pci_driver mwl8k_driver = {
4571         .name           = MWL8K_NAME,
4572         .id_table       = mwl8k_pci_id_table,
4573         .probe          = mwl8k_probe,
4574         .remove         = __devexit_p(mwl8k_remove),
4575         .shutdown       = __devexit_p(mwl8k_shutdown),
4576 };
4577
4578 static int __init mwl8k_init(void)
4579 {
4580         return pci_register_driver(&mwl8k_driver);
4581 }
4582
4583 static void __exit mwl8k_exit(void)
4584 {
4585         pci_unregister_driver(&mwl8k_driver);
4586 }
4587
4588 module_init(mwl8k_init);
4589 module_exit(mwl8k_exit);
4590
4591 MODULE_DESCRIPTION(MWL8K_DESC);
4592 MODULE_VERSION(MWL8K_VERSION);
4593 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
4594 MODULE_LICENSE("GPL");