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 inline void mwl8k_add_dma_header(struct sk_buff *skb)
 719 {
 720         struct ieee80211_hdr *wh;
 721         int hdrlen;
 722         struct mwl8k_dma_data *tr;
 723
 724         /*
 725          * Add a firmware DMA header; the firmware requires that we
 726          * present a 2-byte payload length followed by a 4-address
 727          * header (without QoS field), followed (optionally) by any
 728          * WEP/ExtIV header (but only filled in for CCMP).
 729          */
 730         wh = (struct ieee80211_hdr *)skb->data;
 731
 732         hdrlen = ieee80211_hdrlen(wh->frame_control);
 733         if (hdrlen != sizeof(*tr))
 734                 skb_push(skb, sizeof(*tr) - hdrlen);
 735
 736         if (ieee80211_is_data_qos(wh->frame_control))
 737                 hdrlen -= 2;
 738
 739         tr = (struct mwl8k_dma_data *)skb->data;
 740         if (wh != &tr->wh)
 741                 memmove(&tr->wh, wh, hdrlen);
 742         if (hdrlen != sizeof(tr->wh))
 743                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 744
 745         /*
 746          * Firmware length is the length of the fully formed "802.11
 747          * payload".  That is, everything except for the 802.11 header.
 748          * This includes all crypto material including the MIC.
 749          */
 750         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
 751 }
 752
 753
 754 /*
 755  * Packet reception for 88w8366 AP firmware.
 756  */
 757 struct mwl8k_rxd_8366_ap {
 758         __le16 pkt_len;
 759         __u8 sq2;
 760         __u8 rate;
 761         __le32 pkt_phys_addr;
 762         __le32 next_rxd_phys_addr;
 763         __le16 qos_control;
 764         __le16 htsig2;
 765         __le32 hw_rssi_info;
 766         __le32 hw_noise_floor_info;
 767         __u8 noise_floor;
 768         __u8 pad0[3];
 769         __u8 rssi;
 770         __u8 rx_status;
 771         __u8 channel;
 772         __u8 rx_ctrl;
 773 } __packed;
 774
 775 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 776 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 777 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 778
 779 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 780
 781 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 782 {
 783         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 784
 785         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 786         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 787 }
 788
 789 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 790 {
 791         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 792
 793         rxd->pkt_len = cpu_to_le16(len);
 794         rxd->pkt_phys_addr = cpu_to_le32(addr);
 795         wmb();
 796         rxd->rx_ctrl = 0;
 797 }
 798
 799 static int
 800 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 801                           __le16 *qos, s8 *noise)
 802 {
 803         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 804
 805         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 806                 return -1;
 807         rmb();
 808
 809         memset(status, 0, sizeof(*status));
 810
 811         status->signal = -rxd->rssi;
 812         *noise = -rxd->noise_floor;
 813
 814         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 815                 status->flag |= RX_FLAG_HT;
 816                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 817                         status->flag |= RX_FLAG_40MHZ;
 818                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 819         } else {
 820                 int i;
 821
 822                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 823                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 824                                 status->rate_idx = i;
 825                                 break;
 826                         }
 827                 }
 828         }
 829
 830         if (rxd->channel > 14) {
 831                 status->band = IEEE80211_BAND_5GHZ;
 832                 if (!(status->flag & RX_FLAG_HT))
 833                         status->rate_idx -= 5;
 834         } else {
 835                 status->band = IEEE80211_BAND_2GHZ;
 836         }
 837         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 838
 839         *qos = rxd->qos_control;
 840
 841         return le16_to_cpu(rxd->pkt_len);
 842 }
 843
 844 static struct rxd_ops rxd_8366_ap_ops = {
 845         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 846         .rxd_init       = mwl8k_rxd_8366_ap_init,
 847         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 848         .rxd_process    = mwl8k_rxd_8366_ap_process,
 849 };
 850
 851 /*
 852  * Packet reception for STA firmware.
 853  */
 854 struct mwl8k_rxd_sta {
 855         __le16 pkt_len;
 856         __u8 link_quality;
 857         __u8 noise_level;
 858         __le32 pkt_phys_addr;
 859         __le32 next_rxd_phys_addr;
 860         __le16 qos_control;
 861         __le16 rate_info;
 862         __le32 pad0[4];
 863         __u8 rssi;
 864         __u8 channel;
 865         __le16 pad1;
 866         __u8 rx_ctrl;
 867         __u8 rx_status;
 868         __u8 pad2[2];
 869 } __packed;
 870
 871 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 872 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 873 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 874 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 875 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 876 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 877
 878 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 879
 880 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 881 {
 882         struct mwl8k_rxd_sta *rxd = _rxd;
 883
 884         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 885         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 886 }
 887
 888 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 889 {
 890         struct mwl8k_rxd_sta *rxd = _rxd;
 891
 892         rxd->pkt_len = cpu_to_le16(len);
 893         rxd->pkt_phys_addr = cpu_to_le32(addr);
 894         wmb();
 895         rxd->rx_ctrl = 0;
 896 }
 897
 898 static int
 899 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 900                        __le16 *qos, s8 *noise)
 901 {
 902         struct mwl8k_rxd_sta *rxd = _rxd;
 903         u16 rate_info;
 904
 905         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 906                 return -1;
 907         rmb();
 908
 909         rate_info = le16_to_cpu(rxd->rate_info);
 910
 911         memset(status, 0, sizeof(*status));
 912
 913         status->signal = -rxd->rssi;
 914         *noise = -rxd->noise_level;
 915         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 916         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
 917
 918         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
 919                 status->flag |= RX_FLAG_SHORTPRE;
 920         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
 921                 status->flag |= RX_FLAG_40MHZ;
 922         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
 923                 status->flag |= RX_FLAG_SHORT_GI;
 924         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
 925                 status->flag |= RX_FLAG_HT;
 926
 927         if (rxd->channel > 14) {
 928                 status->band = IEEE80211_BAND_5GHZ;
 929                 if (!(status->flag & RX_FLAG_HT))
 930                         status->rate_idx -= 5;
 931         } else {
 932                 status->band = IEEE80211_BAND_2GHZ;
 933         }
 934         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 935
 936         *qos = rxd->qos_control;
 937
 938         return le16_to_cpu(rxd->pkt_len);
 939 }
 940
 941 static struct rxd_ops rxd_sta_ops = {
 942         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
 943         .rxd_init       = mwl8k_rxd_sta_init,
 944         .rxd_refill     = mwl8k_rxd_sta_refill,
 945         .rxd_process    = mwl8k_rxd_sta_process,
 946 };
 947
 948
 949 #define MWL8K_RX_DESCS          256
 950 #define MWL8K_RX_MAXSZ          3800
 951
 952 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 953 {
 954         struct mwl8k_priv *priv = hw->priv;
 955         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 956         int size;
 957         int i;
 958
 959         rxq->rxd_count = 0;
 960         rxq->head = 0;
 961         rxq->tail = 0;
 962
 963         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 964
 965         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 966         if (rxq->rxd == NULL) {
 967                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
 968                 return -ENOMEM;
 969         }
 970         memset(rxq->rxd, 0, size);
 971
 972         rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
 973         if (rxq->buf == NULL) {
 974                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
 975                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
 976                 return -ENOMEM;
 977         }
 978         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
 979
 980         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 981                 int desc_size;
 982                 void *rxd;
 983                 int nexti;
 984                 dma_addr_t next_dma_addr;
 985
 986                 desc_size = priv->rxd_ops->rxd_size;
 987                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
 988
 989                 nexti = i + 1;
 990                 if (nexti == MWL8K_RX_DESCS)
 991                         nexti = 0;
 992                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
 993
 994                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
 995         }
 996
 997         return 0;
 998 }
 999
1000 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1001 {
1002         struct mwl8k_priv *priv = hw->priv;
1003         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1004         int refilled;
1005
1006         refilled = 0;
1007         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1008                 struct sk_buff *skb;
1009                 dma_addr_t addr;
1010                 int rx;
1011                 void *rxd;
1012
1013                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1014                 if (skb == NULL)
1015                         break;
1016
1017                 addr = pci_map_single(priv->pdev, skb->data,
1018                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1019
1020                 rxq->rxd_count++;
1021                 rx = rxq->tail++;
1022                 if (rxq->tail == MWL8K_RX_DESCS)
1023                         rxq->tail = 0;
1024                 rxq->buf[rx].skb = skb;
1025                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1026
1027                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1028                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1029
1030                 refilled++;
1031         }
1032
1033         return refilled;
1034 }
1035
1036 /* Must be called only when the card's reception is completely halted */
1037 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1038 {
1039         struct mwl8k_priv *priv = hw->priv;
1040         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1041         int i;
1042
1043         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1044                 if (rxq->buf[i].skb != NULL) {
1045                         pci_unmap_single(priv->pdev,
1046                                          dma_unmap_addr(&rxq->buf[i], dma),
1047                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1048                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1049
1050                         kfree_skb(rxq->buf[i].skb);
1051                         rxq->buf[i].skb = NULL;
1052                 }
1053         }
1054
1055         kfree(rxq->buf);
1056         rxq->buf = NULL;
1057
1058         pci_free_consistent(priv->pdev,
1059                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1060                             rxq->rxd, rxq->rxd_dma);
1061         rxq->rxd = NULL;
1062 }
1063
1064
1065 /*
1066  * Scan a list of BSSIDs to process for finalize join.
1067  * Allows for extension to process multiple BSSIDs.
1068  */
1069 static inline int
1070 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1071 {
1072         return priv->capture_beacon &&
1073                 ieee80211_is_beacon(wh->frame_control) &&
1074                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1075 }
1076
1077 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1078                                      struct sk_buff *skb)
1079 {
1080         struct mwl8k_priv *priv = hw->priv;
1081
1082         priv->capture_beacon = false;
1083         memset(priv->capture_bssid, 0, ETH_ALEN);
1084
1085         /*
1086          * Use GFP_ATOMIC as rxq_process is called from
1087          * the primary interrupt handler, memory allocation call
1088          * must not sleep.
1089          */
1090         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1091         if (priv->beacon_skb != NULL)
1092                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1093 }
1094
1095 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1096 {
1097         struct mwl8k_priv *priv = hw->priv;
1098         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1099         int processed;
1100
1101         processed = 0;
1102         while (rxq->rxd_count && limit--) {
1103                 struct sk_buff *skb;
1104                 void *rxd;
1105                 int pkt_len;
1106                 struct ieee80211_rx_status status;
1107                 __le16 qos;
1108
1109                 skb = rxq->buf[rxq->head].skb;
1110                 if (skb == NULL)
1111                         break;
1112
1113                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1114
1115                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1116                                                         &priv->noise);
1117                 if (pkt_len < 0)
1118                         break;
1119
1120                 rxq->buf[rxq->head].skb = NULL;
1121
1122                 pci_unmap_single(priv->pdev,
1123                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1124                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1125                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1126
1127                 rxq->head++;
1128                 if (rxq->head == MWL8K_RX_DESCS)
1129                         rxq->head = 0;
1130
1131                 rxq->rxd_count--;
1132
1133                 skb_put(skb, pkt_len);
1134                 mwl8k_remove_dma_header(skb, qos);
1135
1136                 /*
1137                  * Check for a pending join operation.  Save a
1138                  * copy of the beacon and schedule a tasklet to
1139                  * send a FINALIZE_JOIN command to the firmware.
1140                  */
1141                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1142                         mwl8k_save_beacon(hw, skb);
1143
1144                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1145                 ieee80211_rx_irqsafe(hw, skb);
1146
1147                 processed++;
1148         }
1149
1150         return processed;
1151 }
1152
1153
1154 /*
1155  * Packet transmission.
1156  */
1157
1158 #define MWL8K_TXD_STATUS_OK                     0x00000001
1159 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1160 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1161 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1162 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1163
1164 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1165 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1166 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1167 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1168 #define MWL8K_QOS_EOSP                          0x0010
1169
1170 struct mwl8k_tx_desc {
1171         __le32 status;
1172         __u8 data_rate;
1173         __u8 tx_priority;
1174         __le16 qos_control;
1175         __le32 pkt_phys_addr;
1176         __le16 pkt_len;
1177         __u8 dest_MAC_addr[ETH_ALEN];
1178         __le32 next_txd_phys_addr;
1179         __le32 reserved;
1180         __le16 rate_info;
1181         __u8 peer_id;
1182         __u8 tx_frag_cnt;
1183 } __packed;
1184
1185 #define MWL8K_TX_DESCS          128
1186
1187 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1188 {
1189         struct mwl8k_priv *priv = hw->priv;
1190         struct mwl8k_tx_queue *txq = priv->txq + index;
1191         int size;
1192         int i;
1193
1194         txq->len = 0;
1195         txq->head = 0;
1196         txq->tail = 0;
1197
1198         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1199
1200         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1201         if (txq->txd == NULL) {
1202                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1203                 return -ENOMEM;
1204         }
1205         memset(txq->txd, 0, size);
1206
1207         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1208         if (txq->skb == NULL) {
1209                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1210                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1211                 return -ENOMEM;
1212         }
1213         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1214
1215         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1216                 struct mwl8k_tx_desc *tx_desc;
1217                 int nexti;
1218
1219                 tx_desc = txq->txd + i;
1220                 nexti = (i + 1) % MWL8K_TX_DESCS;
1221
1222                 tx_desc->status = 0;
1223                 tx_desc->next_txd_phys_addr =
1224                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1225         }
1226
1227         return 0;
1228 }
1229
1230 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1231 {
1232         iowrite32(MWL8K_H2A_INT_PPA_READY,
1233                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1234         iowrite32(MWL8K_H2A_INT_DUMMY,
1235                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1236         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1237 }
1238
1239 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1240 {
1241         struct mwl8k_priv *priv = hw->priv;
1242         int i;
1243
1244         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1245                 struct mwl8k_tx_queue *txq = priv->txq + i;
1246                 int fw_owned = 0;
1247                 int drv_owned = 0;
1248                 int unused = 0;
1249                 int desc;
1250
1251                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1252                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1253                         u32 status;
1254
1255                         status = le32_to_cpu(tx_desc->status);
1256                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1257                                 fw_owned++;
1258                         else
1259                                 drv_owned++;
1260
1261                         if (tx_desc->pkt_len == 0)
1262                                 unused++;
1263                 }
1264
1265                 wiphy_err(hw->wiphy,
1266                           "txq[%d] len=%d head=%d tail=%d "
1267                           "fw_owned=%d drv_owned=%d unused=%d\n",
1268                           i,
1269                           txq->len, txq->head, txq->tail,
1270                           fw_owned, drv_owned, unused);
1271         }
1272 }
1273
1274 /*
1275  * Must be called with priv->fw_mutex held and tx queues stopped.
1276  */
1277 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1278
1279 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1280 {
1281         struct mwl8k_priv *priv = hw->priv;
1282         DECLARE_COMPLETION_ONSTACK(tx_wait);
1283         int retry;
1284         int rc;
1285
1286         might_sleep();
1287
1288         /*
1289          * The TX queues are stopped at this point, so this test
1290          * doesn't need to take ->tx_lock.
1291          */
1292         if (!priv->pending_tx_pkts)
1293                 return 0;
1294
1295         retry = 0;
1296         rc = 0;
1297
1298         spin_lock_bh(&priv->tx_lock);
1299         priv->tx_wait = &tx_wait;
1300         while (!rc) {
1301                 int oldcount;
1302                 unsigned long timeout;
1303
1304                 oldcount = priv->pending_tx_pkts;
1305
1306                 spin_unlock_bh(&priv->tx_lock);
1307                 timeout = wait_for_completion_timeout(&tx_wait,
1308                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1309                 spin_lock_bh(&priv->tx_lock);
1310
1311                 if (timeout) {
1312                         WARN_ON(priv->pending_tx_pkts);
1313                         if (retry) {
1314                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1315                         }
1316                         break;
1317                 }
1318
1319                 if (priv->pending_tx_pkts < oldcount) {
1320                         wiphy_notice(hw->wiphy,
1321                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1322                                      oldcount, priv->pending_tx_pkts);
1323                         retry = 1;
1324                         continue;
1325                 }
1326
1327                 priv->tx_wait = NULL;
1328
1329                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1330                           MWL8K_TX_WAIT_TIMEOUT_MS);
1331                 mwl8k_dump_tx_rings(hw);
1332
1333                 rc = -ETIMEDOUT;
1334         }
1335         spin_unlock_bh(&priv->tx_lock);
1336
1337         return rc;
1338 }
1339
1340 #define MWL8K_TXD_SUCCESS(status)                               \
1341         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1342                      MWL8K_TXD_STATUS_OK_RETRY |                \
1343                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1344
1345 static int
1346 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1347 {
1348         struct mwl8k_priv *priv = hw->priv;
1349         struct mwl8k_tx_queue *txq = priv->txq + index;
1350         int processed;
1351
1352         processed = 0;
1353         while (txq->len > 0 && limit--) {
1354                 int tx;
1355                 struct mwl8k_tx_desc *tx_desc;
1356                 unsigned long addr;
1357                 int size;
1358                 struct sk_buff *skb;
1359                 struct ieee80211_tx_info *info;
1360                 u32 status;
1361
1362                 tx = txq->head;
1363                 tx_desc = txq->txd + tx;
1364
1365                 status = le32_to_cpu(tx_desc->status);
1366
1367                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1368                         if (!force)
1369                                 break;
1370                         tx_desc->status &=
1371                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1372                 }
1373
1374                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1375                 BUG_ON(txq->len == 0);
1376                 txq->len--;
1377                 priv->pending_tx_pkts--;
1378
1379                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1380                 size = le16_to_cpu(tx_desc->pkt_len);
1381                 skb = txq->skb[tx];
1382                 txq->skb[tx] = NULL;
1383
1384                 BUG_ON(skb == NULL);
1385                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1386
1387                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1388
1389                 /* Mark descriptor as unused */
1390                 tx_desc->pkt_phys_addr = 0;
1391                 tx_desc->pkt_len = 0;
1392
1393                 info = IEEE80211_SKB_CB(skb);
1394                 ieee80211_tx_info_clear_status(info);
1395                 if (MWL8K_TXD_SUCCESS(status))
1396                         info->flags |= IEEE80211_TX_STAT_ACK;
1397
1398                 ieee80211_tx_status_irqsafe(hw, skb);
1399
1400                 processed++;
1401         }
1402
1403         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1404                 ieee80211_wake_queue(hw, index);
1405
1406         return processed;
1407 }
1408
1409 /* must be called only when the card's transmit is completely halted */
1410 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1411 {
1412         struct mwl8k_priv *priv = hw->priv;
1413         struct mwl8k_tx_queue *txq = priv->txq + index;
1414
1415         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1416
1417         kfree(txq->skb);
1418         txq->skb = NULL;
1419
1420         pci_free_consistent(priv->pdev,
1421                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1422                             txq->txd, txq->txd_dma);
1423         txq->txd = NULL;
1424 }
1425
1426 static int
1427 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1428 {
1429         struct mwl8k_priv *priv = hw->priv;
1430         struct ieee80211_tx_info *tx_info;
1431         struct mwl8k_vif *mwl8k_vif;
1432         struct ieee80211_hdr *wh;
1433         struct mwl8k_tx_queue *txq;
1434         struct mwl8k_tx_desc *tx;
1435         dma_addr_t dma;
1436         u32 txstatus;
1437         u8 txdatarate;
1438         u16 qos;
1439
1440         wh = (struct ieee80211_hdr *)skb->data;
1441         if (ieee80211_is_data_qos(wh->frame_control))
1442                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1443         else
1444                 qos = 0;
1445
1446         mwl8k_add_dma_header(skb);
1447         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1448
1449         tx_info = IEEE80211_SKB_CB(skb);
1450         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1451
1452         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1453                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1454                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1455                 mwl8k_vif->seqno += 0x10;
1456         }
1457
1458         /* Setup firmware control bit fields for each frame type.  */
1459         txstatus = 0;
1460         txdatarate = 0;
1461         if (ieee80211_is_mgmt(wh->frame_control) ||
1462             ieee80211_is_ctl(wh->frame_control)) {
1463                 txdatarate = 0;
1464                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1465         } else if (ieee80211_is_data(wh->frame_control)) {
1466                 txdatarate = 1;
1467                 if (is_multicast_ether_addr(wh->addr1))
1468                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1469
1470                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1471                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1472                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1473                 else
1474                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1475         }
1476
1477         dma = pci_map_single(priv->pdev, skb->data,
1478                                 skb->len, PCI_DMA_TODEVICE);
1479
1480         if (pci_dma_mapping_error(priv->pdev, dma)) {
1481                 wiphy_debug(hw->wiphy,
1482                             "failed to dma map skb, dropping TX frame.\n");
1483                 dev_kfree_skb(skb);
1484                 return NETDEV_TX_OK;
1485         }
1486
1487         spin_lock_bh(&priv->tx_lock);
1488
1489         txq = priv->txq + index;
1490
1491         BUG_ON(txq->skb[txq->tail] != NULL);
1492         txq->skb[txq->tail] = skb;
1493
1494         tx = txq->txd + txq->tail;
1495         tx->data_rate = txdatarate;
1496         tx->tx_priority = index;
1497         tx->qos_control = cpu_to_le16(qos);
1498         tx->pkt_phys_addr = cpu_to_le32(dma);
1499         tx->pkt_len = cpu_to_le16(skb->len);
1500         tx->rate_info = 0;
1501         if (!priv->ap_fw && tx_info->control.sta != NULL)
1502                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1503         else
1504                 tx->peer_id = 0;
1505         wmb();
1506         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1507
1508         txq->len++;
1509         priv->pending_tx_pkts++;
1510
1511         txq->tail++;
1512         if (txq->tail == MWL8K_TX_DESCS)
1513                 txq->tail = 0;
1514
1515         if (txq->head == txq->tail)
1516                 ieee80211_stop_queue(hw, index);
1517
1518         mwl8k_tx_start(priv);
1519
1520         spin_unlock_bh(&priv->tx_lock);
1521
1522         return NETDEV_TX_OK;
1523 }
1524
1525
1526 /*
1527  * Firmware access.
1528  *
1529  * We have the following requirements for issuing firmware commands:
1530  * - Some commands require that the packet transmit path is idle when
1531  *   the command is issued.  (For simplicity, we'll just quiesce the
1532  *   transmit path for every command.)
1533  * - There are certain sequences of commands that need to be issued to
1534  *   the hardware sequentially, with no other intervening commands.
1535  *
1536  * This leads to an implementation of a "firmware lock" as a mutex that
1537  * can be taken recursively, and which is taken by both the low-level
1538  * command submission function (mwl8k_post_cmd) as well as any users of
1539  * that function that require issuing of an atomic sequence of commands,
1540  * and quiesces the transmit path whenever it's taken.
1541  */
1542 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1543 {
1544         struct mwl8k_priv *priv = hw->priv;
1545
1546         if (priv->fw_mutex_owner != current) {
1547                 int rc;
1548
1549                 mutex_lock(&priv->fw_mutex);
1550                 ieee80211_stop_queues(hw);
1551
1552                 rc = mwl8k_tx_wait_empty(hw);
1553                 if (rc) {
1554                         ieee80211_wake_queues(hw);
1555                         mutex_unlock(&priv->fw_mutex);
1556
1557                         return rc;
1558                 }
1559
1560                 priv->fw_mutex_owner = current;
1561         }
1562
1563         priv->fw_mutex_depth++;
1564
1565         return 0;
1566 }
1567
1568 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1569 {
1570         struct mwl8k_priv *priv = hw->priv;
1571
1572         if (!--priv->fw_mutex_depth) {
1573                 ieee80211_wake_queues(hw);
1574                 priv->fw_mutex_owner = NULL;
1575                 mutex_unlock(&priv->fw_mutex);
1576         }
1577 }
1578
1579
1580 /*
1581  * Command processing.
1582  */
1583
1584 /* Timeout firmware commands after 10s */
1585 #define MWL8K_CMD_TIMEOUT_MS    10000
1586
1587 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1588 {
1589         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1590         struct mwl8k_priv *priv = hw->priv;
1591         void __iomem *regs = priv->regs;
1592         dma_addr_t dma_addr;
1593         unsigned int dma_size;
1594         int rc;
1595         unsigned long timeout = 0;
1596         u8 buf[32];
1597
1598         cmd->result = (__force __le16) 0xffff;
1599         dma_size = le16_to_cpu(cmd->length);
1600         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1601                                   PCI_DMA_BIDIRECTIONAL);
1602         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1603                 return -ENOMEM;
1604
1605         rc = mwl8k_fw_lock(hw);
1606         if (rc) {
1607                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1608                                                 PCI_DMA_BIDIRECTIONAL);
1609                 return rc;
1610         }
1611
1612         priv->hostcmd_wait = &cmd_wait;
1613         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1614         iowrite32(MWL8K_H2A_INT_DOORBELL,
1615                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1616         iowrite32(MWL8K_H2A_INT_DUMMY,
1617                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1618
1619         timeout = wait_for_completion_timeout(&cmd_wait,
1620                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1621
1622         priv->hostcmd_wait = NULL;
1623
1624         mwl8k_fw_unlock(hw);
1625
1626         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1627                                         PCI_DMA_BIDIRECTIONAL);
1628
1629         if (!timeout) {
1630                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1631                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1632                           MWL8K_CMD_TIMEOUT_MS);
1633                 rc = -ETIMEDOUT;
1634         } else {
1635                 int ms;
1636
1637                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1638
1639                 rc = cmd->result ? -EINVAL : 0;
1640                 if (rc)
1641                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1642                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1643                                   le16_to_cpu(cmd->result));
1644                 else if (ms > 2000)
1645                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1646                                      mwl8k_cmd_name(cmd->code,
1647                                                     buf, sizeof(buf)),
1648                                      ms);
1649         }
1650
1651         return rc;
1652 }
1653
1654 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1655                                  struct ieee80211_vif *vif,
1656                                  struct mwl8k_cmd_pkt *cmd)
1657 {
1658         if (vif != NULL)
1659                 cmd->macid = MWL8K_VIF(vif)->macid;
1660         return mwl8k_post_cmd(hw, cmd);
1661 }
1662
1663 /*
1664  * Setup code shared between STA and AP firmware images.
1665  */
1666 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1667 {
1668         struct mwl8k_priv *priv = hw->priv;
1669
1670         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1671         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1672
1673         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1674         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1675
1676         priv->band_24.band = IEEE80211_BAND_2GHZ;
1677         priv->band_24.channels = priv->channels_24;
1678         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1679         priv->band_24.bitrates = priv->rates_24;
1680         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1681
1682         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1683 }
1684
1685 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1686 {
1687         struct mwl8k_priv *priv = hw->priv;
1688
1689         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1690         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1691
1692         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1693         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1694
1695         priv->band_50.band = IEEE80211_BAND_5GHZ;
1696         priv->band_50.channels = priv->channels_50;
1697         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1698         priv->band_50.bitrates = priv->rates_50;
1699         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1700
1701         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1702 }
1703
1704 /*
1705  * CMD_GET_HW_SPEC (STA version).
1706  */
1707 struct mwl8k_cmd_get_hw_spec_sta {
1708         struct mwl8k_cmd_pkt header;
1709         __u8 hw_rev;
1710         __u8 host_interface;
1711         __le16 num_mcaddrs;
1712         __u8 perm_addr[ETH_ALEN];
1713         __le16 region_code;
1714         __le32 fw_rev;
1715         __le32 ps_cookie;
1716         __le32 caps;
1717         __u8 mcs_bitmap[16];
1718         __le32 rx_queue_ptr;
1719         __le32 num_tx_queues;
1720         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1721         __le32 caps2;
1722         __le32 num_tx_desc_per_queue;
1723         __le32 total_rxd;
1724 } __packed;
1725
1726 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1727 #define MWL8K_CAP_GREENFIELD            0x08000000
1728 #define MWL8K_CAP_AMPDU                 0x04000000
1729 #define MWL8K_CAP_RX_STBC               0x01000000
1730 #define MWL8K_CAP_TX_STBC               0x00800000
1731 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1732 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1733 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1734 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1735 #define MWL8K_CAP_DELAY_BA              0x00003000
1736 #define MWL8K_CAP_MIMO                  0x00000200
1737 #define MWL8K_CAP_40MHZ                 0x00000100
1738 #define MWL8K_CAP_BAND_MASK             0x00000007
1739 #define MWL8K_CAP_5GHZ                  0x00000004
1740 #define MWL8K_CAP_2GHZ4                 0x00000001
1741
1742 static void
1743 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1744                   struct ieee80211_supported_band *band, u32 cap)
1745 {
1746         int rx_streams;
1747         int tx_streams;
1748
1749         band->ht_cap.ht_supported = 1;
1750
1751         if (cap & MWL8K_CAP_MAX_AMSDU)
1752                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1753         if (cap & MWL8K_CAP_GREENFIELD)
1754                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1755         if (cap & MWL8K_CAP_AMPDU) {
1756                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1757                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1758                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1759         }
1760         if (cap & MWL8K_CAP_RX_STBC)
1761                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1762         if (cap & MWL8K_CAP_TX_STBC)
1763                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1764         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1765                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1766         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1767                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1768         if (cap & MWL8K_CAP_DELAY_BA)
1769                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1770         if (cap & MWL8K_CAP_40MHZ)
1771                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1772
1773         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1774         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1775
1776         band->ht_cap.mcs.rx_mask[0] = 0xff;
1777         if (rx_streams >= 2)
1778                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1779         if (rx_streams >= 3)
1780                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1781         band->ht_cap.mcs.rx_mask[4] = 0x01;
1782         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1783
1784         if (rx_streams != tx_streams) {
1785                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1786                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1787                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1788         }
1789 }
1790
1791 static void
1792 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1793 {
1794         struct mwl8k_priv *priv = hw->priv;
1795
1796         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1797                 mwl8k_setup_2ghz_band(hw);
1798                 if (caps & MWL8K_CAP_MIMO)
1799                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1800         }
1801
1802         if (caps & MWL8K_CAP_5GHZ) {
1803                 mwl8k_setup_5ghz_band(hw);
1804                 if (caps & MWL8K_CAP_MIMO)
1805                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1806         }
1807 }
1808
1809 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1810 {
1811         struct mwl8k_priv *priv = hw->priv;
1812         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1813         int rc;
1814         int i;
1815
1816         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1817         if (cmd == NULL)
1818                 return -ENOMEM;
1819
1820         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1821         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1822
1823         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1824         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1825         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1826         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1827         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1828                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1829         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1830         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1831
1832         rc = mwl8k_post_cmd(hw, &cmd->header);
1833
1834         if (!rc) {
1835                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1836                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1837                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1838                 priv->hw_rev = cmd->hw_rev;
1839                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1840                 priv->ap_macids_supported = 0x00000000;
1841                 priv->sta_macids_supported = 0x00000001;
1842         }
1843
1844         kfree(cmd);
1845         return rc;
1846 }
1847
1848 /*
1849  * CMD_GET_HW_SPEC (AP version).
1850  */
1851 struct mwl8k_cmd_get_hw_spec_ap {
1852         struct mwl8k_cmd_pkt header;
1853         __u8 hw_rev;
1854         __u8 host_interface;
1855         __le16 num_wcb;
1856         __le16 num_mcaddrs;
1857         __u8 perm_addr[ETH_ALEN];
1858         __le16 region_code;
1859         __le16 num_antenna;
1860         __le32 fw_rev;
1861         __le32 wcbbase0;
1862         __le32 rxwrptr;
1863         __le32 rxrdptr;
1864         __le32 ps_cookie;
1865         __le32 wcbbase1;
1866         __le32 wcbbase2;
1867         __le32 wcbbase3;
1868         __le32 fw_api_version;
1869 } __packed;
1870
1871 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1872 {
1873         struct mwl8k_priv *priv = hw->priv;
1874         struct mwl8k_cmd_get_hw_spec_ap *cmd;
1875         int rc;
1876         u32 api_version;
1877
1878         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1879         if (cmd == NULL)
1880                 return -ENOMEM;
1881
1882         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1883         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1884
1885         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1886         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1887
1888         rc = mwl8k_post_cmd(hw, &cmd->header);
1889
1890         if (!rc) {
1891                 int off;
1892
1893                 api_version = le32_to_cpu(cmd->fw_api_version);
1894                 if (priv->device_info->fw_api_ap != api_version) {
1895                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
1896                                "  Expected %d got %d.\n", MWL8K_NAME,
1897                                priv->device_info->part_name,
1898                                priv->device_info->fw_api_ap,
1899                                api_version);
1900                         rc = -EINVAL;
1901                         goto done;
1902                 }
1903                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1904                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1905                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1906                 priv->hw_rev = cmd->hw_rev;
1907                 mwl8k_setup_2ghz_band(hw);
1908                 priv->ap_macids_supported = 0x000000ff;
1909                 priv->sta_macids_supported = 0x00000000;
1910
1911                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1912                 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
1913
1914                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1915                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
1916
1917                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1918                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
1919
1920                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1921                 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
1922
1923                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1924                 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
1925
1926                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1927                 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
1928         }
1929
1930 done:
1931         kfree(cmd);
1932         return rc;
1933 }
1934
1935 /*
1936  * CMD_SET_HW_SPEC.
1937  */
1938 struct mwl8k_cmd_set_hw_spec {
1939         struct mwl8k_cmd_pkt header;
1940         __u8 hw_rev;
1941         __u8 host_interface;
1942         __le16 num_mcaddrs;
1943         __u8 perm_addr[ETH_ALEN];
1944         __le16 region_code;
1945         __le32 fw_rev;
1946         __le32 ps_cookie;
1947         __le32 caps;
1948         __le32 rx_queue_ptr;
1949         __le32 num_tx_queues;
1950         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1951         __le32 flags;
1952         __le32 num_tx_desc_per_queue;
1953         __le32 total_rxd;
1954 } __packed;
1955
1956 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
1957 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
1958 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
1959
1960 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1961 {
1962         struct mwl8k_priv *priv = hw->priv;
1963         struct mwl8k_cmd_set_hw_spec *cmd;
1964         int rc;
1965         int i;
1966
1967         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1968         if (cmd == NULL)
1969                 return -ENOMEM;
1970
1971         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1972         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1973
1974         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1975         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1976         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1977         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1978                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1979         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
1980                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
1981                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
1982         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1983         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1984
1985         rc = mwl8k_post_cmd(hw, &cmd->header);
1986         kfree(cmd);
1987
1988         return rc;
1989 }
1990
1991 /*
1992  * CMD_MAC_MULTICAST_ADR.
1993  */
1994 struct mwl8k_cmd_mac_multicast_adr {
1995         struct mwl8k_cmd_pkt header;
1996         __le16 action;
1997         __le16 numaddr;
1998         __u8 addr[0][ETH_ALEN];
1999 };
2000
2001 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2002 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2003 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2004 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2005
2006 static struct mwl8k_cmd_pkt *
2007 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2008                               struct netdev_hw_addr_list *mc_list)
2009 {
2010         struct mwl8k_priv *priv = hw->priv;
2011         struct mwl8k_cmd_mac_multicast_adr *cmd;
2012         int size;
2013         int mc_count = 0;
2014
2015         if (mc_list)
2016                 mc_count = netdev_hw_addr_list_count(mc_list);
2017
2018         if (allmulti || mc_count > priv->num_mcaddrs) {
2019                 allmulti = 1;
2020                 mc_count = 0;
2021         }
2022
2023         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2024
2025         cmd = kzalloc(size, GFP_ATOMIC);
2026         if (cmd == NULL)
2027                 return NULL;
2028
2029         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2030         cmd->header.length = cpu_to_le16(size);
2031         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2032                                   MWL8K_ENABLE_RX_BROADCAST);
2033
2034         if (allmulti) {
2035                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2036         } else if (mc_count) {
2037                 struct netdev_hw_addr *ha;
2038                 int i = 0;
2039
2040                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2041                 cmd->numaddr = cpu_to_le16(mc_count);
2042                 netdev_hw_addr_list_for_each(ha, mc_list) {
2043                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2044                 }
2045         }
2046
2047         return &cmd->header;
2048 }
2049
2050 /*
2051  * CMD_GET_STAT.
2052  */
2053 struct mwl8k_cmd_get_stat {
2054         struct mwl8k_cmd_pkt header;
2055         __le32 stats[64];
2056 } __packed;
2057
2058 #define MWL8K_STAT_ACK_FAILURE  9
2059 #define MWL8K_STAT_RTS_FAILURE  12
2060 #define MWL8K_STAT_FCS_ERROR    24
2061 #define MWL8K_STAT_RTS_SUCCESS  11
2062
2063 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2064                               struct ieee80211_low_level_stats *stats)
2065 {
2066         struct mwl8k_cmd_get_stat *cmd;
2067         int rc;
2068
2069         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2070         if (cmd == NULL)
2071                 return -ENOMEM;
2072
2073         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2074         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2075
2076         rc = mwl8k_post_cmd(hw, &cmd->header);
2077         if (!rc) {
2078                 stats->dot11ACKFailureCount =
2079                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2080                 stats->dot11RTSFailureCount =
2081                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2082                 stats->dot11FCSErrorCount =
2083                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2084                 stats->dot11RTSSuccessCount =
2085                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2086         }
2087         kfree(cmd);
2088
2089         return rc;
2090 }
2091
2092 /*
2093  * CMD_RADIO_CONTROL.
2094  */
2095 struct mwl8k_cmd_radio_control {
2096         struct mwl8k_cmd_pkt header;
2097         __le16 action;
2098         __le16 control;
2099         __le16 radio_on;
2100 } __packed;
2101
2102 static int
2103 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2104 {
2105         struct mwl8k_priv *priv = hw->priv;
2106         struct mwl8k_cmd_radio_control *cmd;
2107         int rc;
2108
2109         if (enable == priv->radio_on && !force)
2110                 return 0;
2111
2112         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2113         if (cmd == NULL)
2114                 return -ENOMEM;
2115
2116         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2117         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2118         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2119         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2120         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2121
2122         rc = mwl8k_post_cmd(hw, &cmd->header);
2123         kfree(cmd);
2124
2125         if (!rc)
2126                 priv->radio_on = enable;
2127
2128         return rc;
2129 }
2130
2131 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2132 {
2133         return mwl8k_cmd_radio_control(hw, 0, 0);
2134 }
2135
2136 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2137 {
2138         return mwl8k_cmd_radio_control(hw, 1, 0);
2139 }
2140
2141 static int
2142 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2143 {
2144         struct mwl8k_priv *priv = hw->priv;
2145
2146         priv->radio_short_preamble = short_preamble;
2147
2148         return mwl8k_cmd_radio_control(hw, 1, 1);
2149 }
2150
2151 /*
2152  * CMD_RF_TX_POWER.
2153  */
2154 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2155
2156 struct mwl8k_cmd_rf_tx_power {
2157         struct mwl8k_cmd_pkt header;
2158         __le16 action;
2159         __le16 support_level;
2160         __le16 current_level;
2161         __le16 reserved;
2162         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2163 } __packed;
2164
2165 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2166 {
2167         struct mwl8k_cmd_rf_tx_power *cmd;
2168         int rc;
2169
2170         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2171         if (cmd == NULL)
2172                 return -ENOMEM;
2173
2174         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2175         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2176         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2177         cmd->support_level = cpu_to_le16(dBm);
2178
2179         rc = mwl8k_post_cmd(hw, &cmd->header);
2180         kfree(cmd);
2181
2182         return rc;
2183 }
2184
2185 /*
2186  * CMD_TX_POWER.
2187  */
2188 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2189
2190 struct mwl8k_cmd_tx_power {
2191         struct mwl8k_cmd_pkt header;
2192         __le16 action;
2193         __le16 band;
2194         __le16 channel;
2195         __le16 bw;
2196         __le16 sub_ch;
2197         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2198 } __attribute__((packed));
2199
2200 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2201                                      struct ieee80211_conf *conf,
2202                                      unsigned short pwr)
2203 {
2204         struct ieee80211_channel *channel = conf->channel;
2205         struct mwl8k_cmd_tx_power *cmd;
2206         int rc;
2207         int i;
2208
2209         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2210         if (cmd == NULL)
2211                 return -ENOMEM;
2212
2213         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2214         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2215         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2216
2217         if (channel->band == IEEE80211_BAND_2GHZ)
2218                 cmd->band = cpu_to_le16(0x1);
2219         else if (channel->band == IEEE80211_BAND_5GHZ)
2220                 cmd->band = cpu_to_le16(0x4);
2221
2222         cmd->channel = channel->hw_value;
2223
2224         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2225             conf->channel_type == NL80211_CHAN_HT20) {
2226                 cmd->bw = cpu_to_le16(0x2);
2227         } else {
2228                 cmd->bw = cpu_to_le16(0x4);
2229                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2230                         cmd->sub_ch = cpu_to_le16(0x3);
2231                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2232                         cmd->sub_ch = cpu_to_le16(0x1);
2233         }
2234
2235         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2236                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2237
2238         rc = mwl8k_post_cmd(hw, &cmd->header);
2239         kfree(cmd);
2240
2241         return rc;
2242 }
2243
2244 /*
2245  * CMD_RF_ANTENNA.
2246  */
2247 struct mwl8k_cmd_rf_antenna {
2248         struct mwl8k_cmd_pkt header;
2249         __le16 antenna;
2250         __le16 mode;
2251 } __packed;
2252
2253 #define MWL8K_RF_ANTENNA_RX             1
2254 #define MWL8K_RF_ANTENNA_TX             2
2255
2256 static int
2257 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2258 {
2259         struct mwl8k_cmd_rf_antenna *cmd;
2260         int rc;
2261
2262         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2263         if (cmd == NULL)
2264                 return -ENOMEM;
2265
2266         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2267         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2268         cmd->antenna = cpu_to_le16(antenna);
2269         cmd->mode = cpu_to_le16(mask);
2270
2271         rc = mwl8k_post_cmd(hw, &cmd->header);
2272         kfree(cmd);
2273
2274         return rc;
2275 }
2276
2277 /*
2278  * CMD_SET_BEACON.
2279  */
2280 struct mwl8k_cmd_set_beacon {
2281         struct mwl8k_cmd_pkt header;
2282         __le16 beacon_len;
2283         __u8 beacon[0];
2284 };
2285
2286 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2287                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2288 {
2289         struct mwl8k_cmd_set_beacon *cmd;
2290         int rc;
2291
2292         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2293         if (cmd == NULL)
2294                 return -ENOMEM;
2295
2296         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2297         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2298         cmd->beacon_len = cpu_to_le16(len);
2299         memcpy(cmd->beacon, beacon, len);
2300
2301         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2302         kfree(cmd);
2303
2304         return rc;
2305 }
2306
2307 /*
2308  * CMD_SET_PRE_SCAN.
2309  */
2310 struct mwl8k_cmd_set_pre_scan {
2311         struct mwl8k_cmd_pkt header;
2312 } __packed;
2313
2314 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2315 {
2316         struct mwl8k_cmd_set_pre_scan *cmd;
2317         int rc;
2318
2319         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2320         if (cmd == NULL)
2321                 return -ENOMEM;
2322
2323         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2324         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2325
2326         rc = mwl8k_post_cmd(hw, &cmd->header);
2327         kfree(cmd);
2328
2329         return rc;
2330 }
2331
2332 /*
2333  * CMD_SET_POST_SCAN.
2334  */
2335 struct mwl8k_cmd_set_post_scan {
2336         struct mwl8k_cmd_pkt header;
2337         __le32 isibss;
2338         __u8 bssid[ETH_ALEN];
2339 } __packed;
2340
2341 static int
2342 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2343 {
2344         struct mwl8k_cmd_set_post_scan *cmd;
2345         int rc;
2346
2347         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2348         if (cmd == NULL)
2349                 return -ENOMEM;
2350
2351         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2352         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2353         cmd->isibss = 0;
2354         memcpy(cmd->bssid, mac, ETH_ALEN);
2355
2356         rc = mwl8k_post_cmd(hw, &cmd->header);
2357         kfree(cmd);
2358
2359         return rc;
2360 }
2361
2362 /*
2363  * CMD_SET_RF_CHANNEL.
2364  */
2365 struct mwl8k_cmd_set_rf_channel {
2366         struct mwl8k_cmd_pkt header;
2367         __le16 action;
2368         __u8 current_channel;
2369         __le32 channel_flags;
2370 } __packed;
2371
2372 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2373                                     struct ieee80211_conf *conf)
2374 {
2375         struct ieee80211_channel *channel = conf->channel;
2376         struct mwl8k_cmd_set_rf_channel *cmd;
2377         int rc;
2378
2379         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2380         if (cmd == NULL)
2381                 return -ENOMEM;
2382
2383         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2384         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2385         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2386         cmd->current_channel = channel->hw_value;
2387
2388         if (channel->band == IEEE80211_BAND_2GHZ)
2389                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2390         else if (channel->band == IEEE80211_BAND_5GHZ)
2391                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2392
2393         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2394             conf->channel_type == NL80211_CHAN_HT20)
2395                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2396         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2397                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2398         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2399                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2400
2401         rc = mwl8k_post_cmd(hw, &cmd->header);
2402         kfree(cmd);
2403
2404         return rc;
2405 }
2406
2407 /*
2408  * CMD_SET_AID.
2409  */
2410 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2411 #define MWL8K_FRAME_PROT_11G                            0x07
2412 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2413 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2414
2415 struct mwl8k_cmd_update_set_aid {
2416         struct  mwl8k_cmd_pkt header;
2417         __le16  aid;
2418
2419          /* AP's MAC address (BSSID) */
2420         __u8    bssid[ETH_ALEN];
2421         __le16  protection_mode;
2422         __u8    supp_rates[14];
2423 } __packed;
2424
2425 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2426 {
2427         int i;
2428         int j;
2429
2430         /*
2431          * Clear nonstandard rates 4 and 13.
2432          */
2433         mask &= 0x1fef;
2434
2435         for (i = 0, j = 0; i < 14; i++) {
2436                 if (mask & (1 << i))
2437                         rates[j++] = mwl8k_rates_24[i].hw_value;
2438         }
2439 }
2440
2441 static int
2442 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2443                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2444 {
2445         struct mwl8k_cmd_update_set_aid *cmd;
2446         u16 prot_mode;
2447         int rc;
2448
2449         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2450         if (cmd == NULL)
2451                 return -ENOMEM;
2452
2453         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2454         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2455         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2456         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2457
2458         if (vif->bss_conf.use_cts_prot) {
2459                 prot_mode = MWL8K_FRAME_PROT_11G;
2460         } else {
2461                 switch (vif->bss_conf.ht_operation_mode &
2462                         IEEE80211_HT_OP_MODE_PROTECTION) {
2463                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2464                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2465                         break;
2466                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2467                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2468                         break;
2469                 default:
2470                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2471                         break;
2472                 }
2473         }
2474         cmd->protection_mode = cpu_to_le16(prot_mode);
2475
2476         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2477
2478         rc = mwl8k_post_cmd(hw, &cmd->header);
2479         kfree(cmd);
2480
2481         return rc;
2482 }
2483
2484 /*
2485  * CMD_SET_RATE.
2486  */
2487 struct mwl8k_cmd_set_rate {
2488         struct  mwl8k_cmd_pkt header;
2489         __u8    legacy_rates[14];
2490
2491         /* Bitmap for supported MCS codes.  */
2492         __u8    mcs_set[16];
2493         __u8    reserved[16];
2494 } __packed;
2495
2496 static int
2497 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2498                    u32 legacy_rate_mask, u8 *mcs_rates)
2499 {
2500         struct mwl8k_cmd_set_rate *cmd;
2501         int rc;
2502
2503         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2504         if (cmd == NULL)
2505                 return -ENOMEM;
2506
2507         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2508         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2509         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2510         memcpy(cmd->mcs_set, mcs_rates, 16);
2511
2512         rc = mwl8k_post_cmd(hw, &cmd->header);
2513         kfree(cmd);
2514
2515         return rc;
2516 }
2517
2518 /*
2519  * CMD_FINALIZE_JOIN.
2520  */
2521 #define MWL8K_FJ_BEACON_MAXLEN  128
2522
2523 struct mwl8k_cmd_finalize_join {
2524         struct mwl8k_cmd_pkt header;
2525         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2526         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2527 } __packed;
2528
2529 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2530                                    int framelen, int dtim)
2531 {
2532         struct mwl8k_cmd_finalize_join *cmd;
2533         struct ieee80211_mgmt *payload = frame;
2534         int payload_len;
2535         int rc;
2536
2537         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2538         if (cmd == NULL)
2539                 return -ENOMEM;
2540
2541         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2542         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2543         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2544
2545         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2546         if (payload_len < 0)
2547                 payload_len = 0;
2548         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2549                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2550
2551         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2552
2553         rc = mwl8k_post_cmd(hw, &cmd->header);
2554         kfree(cmd);
2555
2556         return rc;
2557 }
2558
2559 /*
2560  * CMD_SET_RTS_THRESHOLD.
2561  */
2562 struct mwl8k_cmd_set_rts_threshold {
2563         struct mwl8k_cmd_pkt header;
2564         __le16 action;
2565         __le16 threshold;
2566 } __packed;
2567
2568 static int
2569 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2570 {
2571         struct mwl8k_cmd_set_rts_threshold *cmd;
2572         int rc;
2573
2574         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2575         if (cmd == NULL)
2576                 return -ENOMEM;
2577
2578         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2579         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2580         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2581         cmd->threshold = cpu_to_le16(rts_thresh);
2582
2583         rc = mwl8k_post_cmd(hw, &cmd->header);
2584         kfree(cmd);
2585
2586         return rc;
2587 }
2588
2589 /*
2590  * CMD_SET_SLOT.
2591  */
2592 struct mwl8k_cmd_set_slot {
2593         struct mwl8k_cmd_pkt header;
2594         __le16 action;
2595         __u8 short_slot;
2596 } __packed;
2597
2598 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2599 {
2600         struct mwl8k_cmd_set_slot *cmd;
2601         int rc;
2602
2603         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2604         if (cmd == NULL)
2605                 return -ENOMEM;
2606
2607         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2608         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2609         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2610         cmd->short_slot = short_slot_time;
2611
2612         rc = mwl8k_post_cmd(hw, &cmd->header);
2613         kfree(cmd);
2614
2615         return rc;
2616 }
2617
2618 /*
2619  * CMD_SET_EDCA_PARAMS.
2620  */
2621 struct mwl8k_cmd_set_edca_params {
2622         struct mwl8k_cmd_pkt header;
2623
2624         /* See MWL8K_SET_EDCA_XXX below */
2625         __le16 action;
2626
2627         /* TX opportunity in units of 32 us */
2628         __le16 txop;
2629
2630         union {
2631                 struct {
2632                         /* Log exponent of max contention period: 0...15 */
2633                         __le32 log_cw_max;
2634
2635                         /* Log exponent of min contention period: 0...15 */
2636                         __le32 log_cw_min;
2637
2638                         /* Adaptive interframe spacing in units of 32us */
2639                         __u8 aifs;
2640
2641                         /* TX queue to configure */
2642                         __u8 txq;
2643                 } ap;
2644                 struct {
2645                         /* Log exponent of max contention period: 0...15 */
2646                         __u8 log_cw_max;
2647
2648                         /* Log exponent of min contention period: 0...15 */
2649                         __u8 log_cw_min;
2650
2651                         /* Adaptive interframe spacing in units of 32us */
2652                         __u8 aifs;
2653
2654                         /* TX queue to configure */
2655                         __u8 txq;
2656                 } sta;
2657         };
2658 } __packed;
2659
2660 #define MWL8K_SET_EDCA_CW       0x01
2661 #define MWL8K_SET_EDCA_TXOP     0x02
2662 #define MWL8K_SET_EDCA_AIFS     0x04
2663
2664 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2665                                  MWL8K_SET_EDCA_TXOP | \
2666                                  MWL8K_SET_EDCA_AIFS)
2667
2668 static int
2669 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2670                           __u16 cw_min, __u16 cw_max,
2671                           __u8 aifs, __u16 txop)
2672 {
2673         struct mwl8k_priv *priv = hw->priv;
2674         struct mwl8k_cmd_set_edca_params *cmd;
2675         int rc;
2676
2677         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2678         if (cmd == NULL)
2679                 return -ENOMEM;
2680
2681         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2682         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2683         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2684         cmd->txop = cpu_to_le16(txop);
2685         if (priv->ap_fw) {
2686                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2687                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2688                 cmd->ap.aifs = aifs;
2689                 cmd->ap.txq = qnum;
2690         } else {
2691                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2692                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2693                 cmd->sta.aifs = aifs;
2694                 cmd->sta.txq = qnum;
2695         }
2696
2697         rc = mwl8k_post_cmd(hw, &cmd->header);
2698         kfree(cmd);
2699
2700         return rc;
2701 }
2702
2703 /*
2704  * CMD_SET_WMM_MODE.
2705  */
2706 struct mwl8k_cmd_set_wmm_mode {
2707         struct mwl8k_cmd_pkt header;
2708         __le16 action;
2709 } __packed;
2710
2711 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2712 {
2713         struct mwl8k_priv *priv = hw->priv;
2714         struct mwl8k_cmd_set_wmm_mode *cmd;
2715         int rc;
2716
2717         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2718         if (cmd == NULL)
2719                 return -ENOMEM;
2720
2721         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2722         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2723         cmd->action = cpu_to_le16(!!enable);
2724
2725         rc = mwl8k_post_cmd(hw, &cmd->header);
2726         kfree(cmd);
2727
2728         if (!rc)
2729                 priv->wmm_enabled = enable;
2730
2731         return rc;
2732 }
2733
2734 /*
2735  * CMD_MIMO_CONFIG.
2736  */
2737 struct mwl8k_cmd_mimo_config {
2738         struct mwl8k_cmd_pkt header;
2739         __le32 action;
2740         __u8 rx_antenna_map;
2741         __u8 tx_antenna_map;
2742 } __packed;
2743
2744 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2745 {
2746         struct mwl8k_cmd_mimo_config *cmd;
2747         int rc;
2748
2749         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2750         if (cmd == NULL)
2751                 return -ENOMEM;
2752
2753         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2754         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2755         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2756         cmd->rx_antenna_map = rx;
2757         cmd->tx_antenna_map = tx;
2758
2759         rc = mwl8k_post_cmd(hw, &cmd->header);
2760         kfree(cmd);
2761
2762         return rc;
2763 }
2764
2765 /*
2766  * CMD_USE_FIXED_RATE (STA version).
2767  */
2768 struct mwl8k_cmd_use_fixed_rate_sta {
2769         struct mwl8k_cmd_pkt header;
2770         __le32 action;
2771         __le32 allow_rate_drop;
2772         __le32 num_rates;
2773         struct {
2774                 __le32 is_ht_rate;
2775                 __le32 enable_retry;
2776                 __le32 rate;
2777                 __le32 retry_count;
2778         } rate_entry[8];
2779         __le32 rate_type;
2780         __le32 reserved1;
2781         __le32 reserved2;
2782 } __packed;
2783
2784 #define MWL8K_USE_AUTO_RATE     0x0002
2785 #define MWL8K_UCAST_RATE        0
2786
2787 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2788 {
2789         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2790         int rc;
2791
2792         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2793         if (cmd == NULL)
2794                 return -ENOMEM;
2795
2796         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2797         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2798         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2799         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2800
2801         rc = mwl8k_post_cmd(hw, &cmd->header);
2802         kfree(cmd);
2803
2804         return rc;
2805 }
2806
2807 /*
2808  * CMD_USE_FIXED_RATE (AP version).
2809  */
2810 struct mwl8k_cmd_use_fixed_rate_ap {
2811         struct mwl8k_cmd_pkt header;
2812         __le32 action;
2813         __le32 allow_rate_drop;
2814         __le32 num_rates;
2815         struct mwl8k_rate_entry_ap {
2816                 __le32 is_ht_rate;
2817                 __le32 enable_retry;
2818                 __le32 rate;
2819                 __le32 retry_count;
2820         } rate_entry[4];
2821         u8 multicast_rate;
2822         u8 multicast_rate_type;
2823         u8 management_rate;
2824 } __packed;
2825
2826 static int
2827 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2828 {
2829         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2830         int rc;
2831
2832         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2833         if (cmd == NULL)
2834                 return -ENOMEM;
2835
2836         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2837         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2838         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2839         cmd->multicast_rate = mcast;
2840         cmd->management_rate = mgmt;
2841
2842         rc = mwl8k_post_cmd(hw, &cmd->header);
2843         kfree(cmd);
2844
2845         return rc;
2846 }
2847
2848 /*
2849  * CMD_ENABLE_SNIFFER.
2850  */
2851 struct mwl8k_cmd_enable_sniffer {
2852         struct mwl8k_cmd_pkt header;
2853         __le32 action;
2854 } __packed;
2855
2856 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2857 {
2858         struct mwl8k_cmd_enable_sniffer *cmd;
2859         int rc;
2860
2861         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2862         if (cmd == NULL)
2863                 return -ENOMEM;
2864
2865         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2866         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2867         cmd->action = cpu_to_le32(!!enable);
2868
2869         rc = mwl8k_post_cmd(hw, &cmd->header);
2870         kfree(cmd);
2871
2872         return rc;
2873 }
2874
2875 /*
2876  * CMD_SET_MAC_ADDR.
2877  */
2878 struct mwl8k_cmd_set_mac_addr {
2879         struct mwl8k_cmd_pkt header;
2880         union {
2881                 struct {
2882                         __le16 mac_type;
2883                         __u8 mac_addr[ETH_ALEN];
2884                 } mbss;
2885                 __u8 mac_addr[ETH_ALEN];
2886         };
2887 } __packed;
2888
2889 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
2890 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
2891 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
2892 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
2893
2894 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
2895                                   struct ieee80211_vif *vif, u8 *mac)
2896 {
2897         struct mwl8k_priv *priv = hw->priv;
2898         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2899         struct mwl8k_cmd_set_mac_addr *cmd;
2900         int mac_type;
2901         int rc;
2902
2903         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2904         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
2905                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
2906                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
2907                 else
2908                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
2909         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
2910                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
2911                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2912                 else
2913                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
2914         }
2915
2916         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2917         if (cmd == NULL)
2918                 return -ENOMEM;
2919
2920         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2921         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2922         if (priv->ap_fw) {
2923                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
2924                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2925         } else {
2926                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2927         }
2928
2929         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2930         kfree(cmd);
2931
2932         return rc;
2933 }
2934
2935 /*
2936  * CMD_SET_RATEADAPT_MODE.
2937  */
2938 struct mwl8k_cmd_set_rate_adapt_mode {
2939         struct mwl8k_cmd_pkt header;
2940         __le16 action;
2941         __le16 mode;
2942 } __packed;
2943
2944 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2945 {
2946         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2947         int rc;
2948
2949         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2950         if (cmd == NULL)
2951                 return -ENOMEM;
2952
2953         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2954         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2955         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2956         cmd->mode = cpu_to_le16(mode);
2957
2958         rc = mwl8k_post_cmd(hw, &cmd->header);
2959         kfree(cmd);
2960
2961         return rc;
2962 }
2963
2964 /*
2965  * CMD_BSS_START.
2966  */
2967 struct mwl8k_cmd_bss_start {
2968         struct mwl8k_cmd_pkt header;
2969         __le32 enable;
2970 } __packed;
2971
2972 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
2973                                struct ieee80211_vif *vif, int enable)
2974 {
2975         struct mwl8k_cmd_bss_start *cmd;
2976         int rc;
2977
2978         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2979         if (cmd == NULL)
2980                 return -ENOMEM;
2981
2982         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
2983         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2984         cmd->enable = cpu_to_le32(enable);
2985
2986         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2987         kfree(cmd);
2988
2989         return rc;
2990 }
2991
2992 /*
2993  * CMD_SET_NEW_STN.
2994  */
2995 struct mwl8k_cmd_set_new_stn {
2996         struct mwl8k_cmd_pkt header;
2997         __le16 aid;
2998         __u8 mac_addr[6];
2999         __le16 stn_id;
3000         __le16 action;
3001         __le16 rsvd;
3002         __le32 legacy_rates;
3003         __u8 ht_rates[4];
3004         __le16 cap_info;
3005         __le16 ht_capabilities_info;
3006         __u8 mac_ht_param_info;
3007         __u8 rev;
3008         __u8 control_channel;
3009         __u8 add_channel;
3010         __le16 op_mode;
3011         __le16 stbc;
3012         __u8 add_qos_info;
3013         __u8 is_qos_sta;
3014         __le32 fw_sta_ptr;
3015 } __packed;
3016
3017 #define MWL8K_STA_ACTION_ADD            0
3018 #define MWL8K_STA_ACTION_REMOVE         2
3019
3020 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3021                                      struct ieee80211_vif *vif,
3022                                      struct ieee80211_sta *sta)
3023 {
3024         struct mwl8k_cmd_set_new_stn *cmd;
3025         u32 rates;
3026         int rc;
3027
3028         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3029         if (cmd == NULL)
3030                 return -ENOMEM;
3031
3032         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3033         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3034         cmd->aid = cpu_to_le16(sta->aid);
3035         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3036         cmd->stn_id = cpu_to_le16(sta->aid);
3037         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3038         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3039                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3040         else
3041                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3042         cmd->legacy_rates = cpu_to_le32(rates);
3043         if (sta->ht_cap.ht_supported) {
3044                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3045                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3046                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3047                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3048                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3049                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3050                         ((sta->ht_cap.ampdu_density & 7) << 2);
3051                 cmd->is_qos_sta = 1;
3052         }
3053
3054         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3055         kfree(cmd);
3056
3057         return rc;
3058 }
3059
3060 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3061                                           struct ieee80211_vif *vif)
3062 {
3063         struct mwl8k_cmd_set_new_stn *cmd;
3064         int rc;
3065
3066         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3067         if (cmd == NULL)
3068                 return -ENOMEM;
3069
3070         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3071         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3072         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3073
3074         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3075         kfree(cmd);
3076
3077         return rc;
3078 }
3079
3080 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3081                                      struct ieee80211_vif *vif, u8 *addr)
3082 {
3083         struct mwl8k_cmd_set_new_stn *cmd;
3084         int rc;
3085
3086         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3087         if (cmd == NULL)
3088                 return -ENOMEM;
3089
3090         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3091         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3092         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3093         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3094
3095         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3096         kfree(cmd);
3097
3098         return rc;
3099 }
3100
3101 /*
3102  * CMD_UPDATE_STADB.
3103  */
3104 struct ewc_ht_info {
3105         __le16  control1;
3106         __le16  control2;
3107         __le16  control3;
3108 } __packed;
3109
3110 struct peer_capability_info {
3111         /* Peer type - AP vs. STA.  */
3112         __u8    peer_type;
3113
3114         /* Basic 802.11 capabilities from assoc resp.  */
3115         __le16  basic_caps;
3116
3117         /* Set if peer supports 802.11n high throughput (HT).  */
3118         __u8    ht_support;
3119
3120         /* Valid if HT is supported.  */
3121         __le16  ht_caps;
3122         __u8    extended_ht_caps;
3123         struct ewc_ht_info      ewc_info;
3124
3125         /* Legacy rate table. Intersection of our rates and peer rates.  */
3126         __u8    legacy_rates[12];
3127
3128         /* HT rate table. Intersection of our rates and peer rates.  */
3129         __u8    ht_rates[16];
3130         __u8    pad[16];
3131
3132         /* If set, interoperability mode, no proprietary extensions.  */
3133         __u8    interop;
3134         __u8    pad2;
3135         __u8    station_id;
3136         __le16  amsdu_enabled;
3137 } __packed;
3138
3139 struct mwl8k_cmd_update_stadb {
3140         struct mwl8k_cmd_pkt header;
3141
3142         /* See STADB_ACTION_TYPE */
3143         __le32  action;
3144
3145         /* Peer MAC address */
3146         __u8    peer_addr[ETH_ALEN];
3147
3148         __le32  reserved;
3149
3150         /* Peer info - valid during add/update.  */
3151         struct peer_capability_info     peer_info;
3152 } __packed;
3153
3154 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3155 #define MWL8K_STA_DB_DEL_ENTRY          2
3156
3157 /* Peer Entry flags - used to define the type of the peer node */
3158 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3159
3160 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3161                                       struct ieee80211_vif *vif,
3162                                       struct ieee80211_sta *sta)
3163 {
3164         struct mwl8k_cmd_update_stadb *cmd;
3165         struct peer_capability_info *p;
3166         u32 rates;
3167         int rc;
3168
3169         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3170         if (cmd == NULL)
3171                 return -ENOMEM;
3172
3173         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3174         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3175         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3176         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3177
3178         p = &cmd->peer_info;
3179         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3180         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3181         p->ht_support = sta->ht_cap.ht_supported;
3182         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3183         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3184                 ((sta->ht_cap.ampdu_density & 7) << 2);
3185         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3186                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3187         else
3188                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3189         legacy_rate_mask_to_array(p->legacy_rates, rates);
3190         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3191         p->interop = 1;
3192         p->amsdu_enabled = 0;
3193
3194         rc = mwl8k_post_cmd(hw, &cmd->header);
3195         kfree(cmd);
3196
3197         return rc ? rc : p->station_id;
3198 }
3199
3200 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3201                                       struct ieee80211_vif *vif, u8 *addr)
3202 {
3203         struct mwl8k_cmd_update_stadb *cmd;
3204         int rc;
3205
3206         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3207         if (cmd == NULL)
3208                 return -ENOMEM;
3209
3210         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3211         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3212         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3213         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3214
3215         rc = mwl8k_post_cmd(hw, &cmd->header);
3216         kfree(cmd);
3217
3218         return rc;
3219 }
3220
3221
3222 /*
3223  * Interrupt handling.
3224  */
3225 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3226 {
3227         struct ieee80211_hw *hw = dev_id;
3228         struct mwl8k_priv *priv = hw->priv;
3229         u32 status;
3230
3231         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3232         if (!status)
3233                 return IRQ_NONE;
3234
3235         if (status & MWL8K_A2H_INT_TX_DONE) {
3236                 status &= ~MWL8K_A2H_INT_TX_DONE;
3237                 tasklet_schedule(&priv->poll_tx_task);
3238         }
3239
3240         if (status & MWL8K_A2H_INT_RX_READY) {
3241                 status &= ~MWL8K_A2H_INT_RX_READY;
3242                 tasklet_schedule(&priv->poll_rx_task);
3243         }
3244
3245         if (status)
3246                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3247
3248         if (status & MWL8K_A2H_INT_OPC_DONE) {
3249                 if (priv->hostcmd_wait != NULL)
3250                         complete(priv->hostcmd_wait);
3251         }
3252
3253         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3254                 if (!mutex_is_locked(&priv->fw_mutex) &&
3255                     priv->radio_on && priv->pending_tx_pkts)
3256                         mwl8k_tx_start(priv);
3257         }
3258
3259         return IRQ_HANDLED;
3260 }
3261
3262 static void mwl8k_tx_poll(unsigned long data)
3263 {
3264         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3265         struct mwl8k_priv *priv = hw->priv;
3266         int limit;
3267         int i;
3268
3269         limit = 32;
3270
3271         spin_lock_bh(&priv->tx_lock);
3272
3273         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3274                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3275
3276         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3277                 complete(priv->tx_wait);
3278                 priv->tx_wait = NULL;
3279         }
3280
3281         spin_unlock_bh(&priv->tx_lock);
3282
3283         if (limit) {
3284                 writel(~MWL8K_A2H_INT_TX_DONE,
3285                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3286         } else {
3287                 tasklet_schedule(&priv->poll_tx_task);
3288         }
3289 }
3290
3291 static void mwl8k_rx_poll(unsigned long data)
3292 {
3293         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3294         struct mwl8k_priv *priv = hw->priv;
3295         int limit;
3296
3297         limit = 32;
3298         limit -= rxq_process(hw, 0, limit);
3299         limit -= rxq_refill(hw, 0, limit);
3300
3301         if (limit) {
3302                 writel(~MWL8K_A2H_INT_RX_READY,
3303                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3304         } else {
3305                 tasklet_schedule(&priv->poll_rx_task);
3306         }
3307 }
3308
3309
3310 /*
3311  * Core driver operations.
3312  */
3313 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3314 {
3315         struct mwl8k_priv *priv = hw->priv;
3316         int index = skb_get_queue_mapping(skb);
3317         int rc;
3318
3319         if (!priv->radio_on) {
3320                 wiphy_debug(hw->wiphy,
3321                             "dropped TX frame since radio disabled\n");
3322                 dev_kfree_skb(skb);
3323                 return NETDEV_TX_OK;
3324         }
3325
3326         rc = mwl8k_txq_xmit(hw, index, skb);
3327
3328         return rc;
3329 }
3330
3331 static int mwl8k_start(struct ieee80211_hw *hw)
3332 {
3333         struct mwl8k_priv *priv = hw->priv;
3334         int rc;
3335
3336         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3337                          IRQF_SHARED, MWL8K_NAME, hw);
3338         if (rc) {
3339                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3340                 return -EIO;
3341         }
3342
3343         /* Enable TX reclaim and RX tasklets.  */
3344         tasklet_enable(&priv->poll_tx_task);
3345         tasklet_enable(&priv->poll_rx_task);
3346
3347         /* Enable interrupts */
3348         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3349
3350         rc = mwl8k_fw_lock(hw);
3351         if (!rc) {
3352                 rc = mwl8k_cmd_radio_enable(hw);
3353
3354                 if (!priv->ap_fw) {
3355                         if (!rc)
3356                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3357
3358                         if (!rc)
3359                                 rc = mwl8k_cmd_set_pre_scan(hw);
3360
3361                         if (!rc)
3362                                 rc = mwl8k_cmd_set_post_scan(hw,
3363                                                 "\x00\x00\x00\x00\x00\x00");
3364                 }
3365
3366                 if (!rc)
3367                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3368
3369                 if (!rc)
3370                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3371
3372                 mwl8k_fw_unlock(hw);
3373         }
3374
3375         if (rc) {
3376                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3377                 free_irq(priv->pdev->irq, hw);
3378                 tasklet_disable(&priv->poll_tx_task);
3379                 tasklet_disable(&priv->poll_rx_task);
3380         }
3381
3382         return rc;
3383 }
3384
3385 static void mwl8k_stop(struct ieee80211_hw *hw)
3386 {
3387         struct mwl8k_priv *priv = hw->priv;
3388         int i;
3389
3390         mwl8k_cmd_radio_disable(hw);
3391
3392         ieee80211_stop_queues(hw);
3393
3394         /* Disable interrupts */
3395         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3396         free_irq(priv->pdev->irq, hw);
3397
3398         /* Stop finalize join worker */
3399         cancel_work_sync(&priv->finalize_join_worker);
3400         if (priv->beacon_skb != NULL)
3401                 dev_kfree_skb(priv->beacon_skb);
3402
3403         /* Stop TX reclaim and RX tasklets.  */
3404         tasklet_disable(&priv->poll_tx_task);
3405         tasklet_disable(&priv->poll_rx_task);
3406
3407         /* Return all skbs to mac80211 */
3408         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3409                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3410 }
3411
3412 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3413
3414 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3415                                struct ieee80211_vif *vif)
3416 {
3417         struct mwl8k_priv *priv = hw->priv;
3418         struct mwl8k_vif *mwl8k_vif;
3419         u32 macids_supported;
3420         int macid, rc;
3421         struct mwl8k_device_info *di;
3422
3423         /*
3424          * Reject interface creation if sniffer mode is active, as
3425          * STA operation is mutually exclusive with hardware sniffer
3426          * mode.  (Sniffer mode is only used on STA firmware.)
3427          */
3428         if (priv->sniffer_enabled) {
3429                 wiphy_info(hw->wiphy,
3430                            "unable to create STA interface because sniffer mode is enabled\n");
3431                 return -EINVAL;
3432         }
3433
3434         di = priv->device_info;
3435         switch (vif->type) {
3436         case NL80211_IFTYPE_AP:
3437                 if (!priv->ap_fw && di->fw_image_ap) {
3438                         /* we must load the ap fw to meet this request */
3439                         if (!list_empty(&priv->vif_list))
3440                                 return -EBUSY;
3441                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3442                         if (rc)
3443                                 return rc;
3444                 }
3445                 macids_supported = priv->ap_macids_supported;
3446                 break;
3447         case NL80211_IFTYPE_STATION:
3448                 if (priv->ap_fw && di->fw_image_sta) {
3449                         /* we must load the sta fw to meet this request */
3450                         if (!list_empty(&priv->vif_list))
3451                                 return -EBUSY;
3452                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3453                         if (rc)
3454                                 return rc;
3455                 }
3456                 macids_supported = priv->sta_macids_supported;
3457                 break;
3458         default:
3459                 return -EINVAL;
3460         }
3461
3462         macid = ffs(macids_supported & ~priv->macids_used);
3463         if (!macid--)
3464                 return -EBUSY;
3465
3466         /* Setup driver private area. */
3467         mwl8k_vif = MWL8K_VIF(vif);
3468         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3469         mwl8k_vif->vif = vif;
3470         mwl8k_vif->macid = macid;
3471         mwl8k_vif->seqno = 0;
3472
3473         /* Set the mac address.  */
3474         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3475
3476         if (priv->ap_fw)
3477                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3478
3479         priv->macids_used |= 1 << mwl8k_vif->macid;
3480         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3481
3482         return 0;
3483 }
3484
3485 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3486                                    struct ieee80211_vif *vif)
3487 {
3488         struct mwl8k_priv *priv = hw->priv;
3489         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3490
3491         if (priv->ap_fw)
3492                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3493
3494         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3495
3496         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3497         list_del(&mwl8k_vif->list);
3498 }
3499
3500 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3501 {
3502         struct ieee80211_conf *conf = &hw->conf;
3503         struct mwl8k_priv *priv = hw->priv;
3504         int rc;
3505
3506         if (conf->flags & IEEE80211_CONF_IDLE) {
3507                 mwl8k_cmd_radio_disable(hw);
3508                 return 0;
3509         }
3510
3511         rc = mwl8k_fw_lock(hw);
3512         if (rc)
3513                 return rc;
3514
3515         rc = mwl8k_cmd_radio_enable(hw);
3516         if (rc)
3517                 goto out;
3518
3519         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3520         if (rc)
3521                 goto out;
3522
3523         if (conf->power_level > 18)
3524                 conf->power_level = 18;
3525
3526         if (priv->ap_fw) {
3527                 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3528                 if (rc)
3529                         goto out;
3530
3531                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3532                 if (!rc)
3533                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3534         } else {
3535                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3536                 if (rc)
3537                         goto out;
3538                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3539         }
3540
3541 out:
3542         mwl8k_fw_unlock(hw);
3543
3544         return rc;
3545 }
3546
3547 static void
3548 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3549                            struct ieee80211_bss_conf *info, u32 changed)
3550 {
3551         struct mwl8k_priv *priv = hw->priv;
3552         u32 ap_legacy_rates;
3553         u8 ap_mcs_rates[16];
3554         int rc;
3555
3556         if (mwl8k_fw_lock(hw))
3557                 return;
3558
3559         /*
3560          * No need to capture a beacon if we're no longer associated.
3561          */
3562         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3563                 priv->capture_beacon = false;
3564
3565         /*
3566          * Get the AP's legacy and MCS rates.
3567          */
3568         if (vif->bss_conf.assoc) {
3569                 struct ieee80211_sta *ap;
3570
3571                 rcu_read_lock();
3572
3573                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3574                 if (ap == NULL) {
3575                         rcu_read_unlock();
3576                         goto out;
3577                 }
3578
3579                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3580                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3581                 } else {
3582                         ap_legacy_rates =
3583                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3584                 }
3585                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3586
3587                 rcu_read_unlock();
3588         }
3589
3590         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3591                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3592                 if (rc)
3593                         goto out;
3594
3595                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
3596                 if (rc)
3597                         goto out;
3598         }
3599
3600         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3601                 rc = mwl8k_set_radio_preamble(hw,
3602                                 vif->bss_conf.use_short_preamble);
3603                 if (rc)
3604                         goto out;
3605         }
3606
3607         if (changed & BSS_CHANGED_ERP_SLOT) {
3608                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3609                 if (rc)
3610                         goto out;
3611         }
3612
3613         if (vif->bss_conf.assoc &&
3614             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
3615                         BSS_CHANGED_HT))) {
3616                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3617                 if (rc)
3618                         goto out;
3619         }
3620
3621         if (vif->bss_conf.assoc &&
3622             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3623                 /*
3624                  * Finalize the join.  Tell rx handler to process
3625                  * next beacon from our BSSID.
3626                  */
3627                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3628                 priv->capture_beacon = true;
3629         }
3630
3631 out:
3632         mwl8k_fw_unlock(hw);
3633 }
3634
3635 static void
3636 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3637                           struct ieee80211_bss_conf *info, u32 changed)
3638 {
3639         int rc;
3640
3641         if (mwl8k_fw_lock(hw))
3642                 return;
3643
3644         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3645                 rc = mwl8k_set_radio_preamble(hw,
3646                                 vif->bss_conf.use_short_preamble);
3647                 if (rc)
3648                         goto out;
3649         }
3650
3651         if (changed & BSS_CHANGED_BASIC_RATES) {
3652                 int idx;
3653                 int rate;
3654
3655                 /*
3656                  * Use lowest supported basic rate for multicasts
3657                  * and management frames (such as probe responses --
3658                  * beacons will always go out at 1 Mb/s).
3659                  */
3660                 idx = ffs(vif->bss_conf.basic_rates);
3661                 if (idx)
3662                         idx--;
3663
3664                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3665                         rate = mwl8k_rates_24[idx].hw_value;
3666                 else
3667                         rate = mwl8k_rates_50[idx].hw_value;
3668
3669                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
3670         }
3671
3672         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
3673                 struct sk_buff *skb;
3674
3675                 skb = ieee80211_beacon_get(hw, vif);
3676                 if (skb != NULL) {
3677                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
3678                         kfree_skb(skb);
3679                 }
3680         }
3681
3682         if (changed & BSS_CHANGED_BEACON_ENABLED)
3683                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
3684
3685 out:
3686         mwl8k_fw_unlock(hw);
3687 }
3688
3689 static void
3690 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3691                        struct ieee80211_bss_conf *info, u32 changed)
3692 {
3693         struct mwl8k_priv *priv = hw->priv;
3694
3695         if (!priv->ap_fw)
3696                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
3697         else
3698                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
3699 }
3700
3701 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3702                                    struct netdev_hw_addr_list *mc_list)
3703 {
3704         struct mwl8k_cmd_pkt *cmd;
3705
3706         /*
3707          * Synthesize and return a command packet that programs the
3708          * hardware multicast address filter.  At this point we don't
3709          * know whether FIF_ALLMULTI is being requested, but if it is,
3710          * we'll end up throwing this packet away and creating a new
3711          * one in mwl8k_configure_filter().
3712          */
3713         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
3714
3715         return (unsigned long)cmd;
3716 }
3717
3718 static int
3719 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3720                                unsigned int changed_flags,
3721                                unsigned int *total_flags)
3722 {
3723         struct mwl8k_priv *priv = hw->priv;
3724
3725         /*
3726          * Hardware sniffer mode is mutually exclusive with STA
3727          * operation, so refuse to enable sniffer mode if a STA
3728          * interface is active.
3729          */
3730         if (!list_empty(&priv->vif_list)) {
3731                 if (net_ratelimit())
3732                         wiphy_info(hw->wiphy,
3733                                    "not enabling sniffer mode because STA interface is active\n");
3734                 return 0;
3735         }
3736
3737         if (!priv->sniffer_enabled) {
3738                 if (mwl8k_cmd_enable_sniffer(hw, 1))
3739                         return 0;
3740                 priv->sniffer_enabled = true;
3741         }
3742
3743         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3744                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3745                         FIF_OTHER_BSS;
3746
3747         return 1;
3748 }
3749
3750 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
3751 {
3752         if (!list_empty(&priv->vif_list))
3753                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
3754
3755         return NULL;
3756 }
3757
3758 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3759                                    unsigned int changed_flags,
3760                                    unsigned int *total_flags,
3761                                    u64 multicast)
3762 {
3763         struct mwl8k_priv *priv = hw->priv;
3764         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3765
3766         /*
3767          * AP firmware doesn't allow fine-grained control over
3768          * the receive filter.
3769          */
3770         if (priv->ap_fw) {
3771                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3772                 kfree(cmd);
3773                 return;
3774         }
3775
3776         /*
3777          * Enable hardware sniffer mode if FIF_CONTROL or
3778          * FIF_OTHER_BSS is requested.
3779          */
3780         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3781             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3782                 kfree(cmd);
3783                 return;
3784         }
3785
3786         /* Clear unsupported feature flags */
3787         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3788
3789         if (mwl8k_fw_lock(hw)) {
3790                 kfree(cmd);
3791                 return;
3792         }
3793
3794         if (priv->sniffer_enabled) {
3795                 mwl8k_cmd_enable_sniffer(hw, 0);
3796                 priv->sniffer_enabled = false;
3797         }
3798
3799         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3800                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3801                         /*
3802                          * Disable the BSS filter.
3803                          */
3804                         mwl8k_cmd_set_pre_scan(hw);
3805                 } else {
3806                         struct mwl8k_vif *mwl8k_vif;
3807                         const u8 *bssid;
3808
3809                         /*
3810                          * Enable the BSS filter.
3811                          *
3812                          * If there is an active STA interface, use that
3813                          * interface's BSSID, otherwise use a dummy one
3814                          * (where the OUI part needs to be nonzero for
3815                          * the BSSID to be accepted by POST_SCAN).
3816                          */
3817                         mwl8k_vif = mwl8k_first_vif(priv);
3818                         if (mwl8k_vif != NULL)
3819                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
3820                         else
3821                                 bssid = "\x01\x00\x00\x00\x00\x00";
3822
3823                         mwl8k_cmd_set_post_scan(hw, bssid);
3824                 }
3825         }
3826
3827         /*
3828          * If FIF_ALLMULTI is being requested, throw away the command
3829          * packet that ->prepare_multicast() built and replace it with
3830          * a command packet that enables reception of all multicast
3831          * packets.
3832          */
3833         if (*total_flags & FIF_ALLMULTI) {
3834                 kfree(cmd);
3835                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
3836         }
3837
3838         if (cmd != NULL) {
3839                 mwl8k_post_cmd(hw, cmd);
3840                 kfree(cmd);
3841         }
3842
3843         mwl8k_fw_unlock(hw);
3844 }
3845
3846 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3847 {
3848         return mwl8k_cmd_set_rts_threshold(hw, value);
3849 }
3850
3851 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
3852                             struct ieee80211_vif *vif,
3853                             struct ieee80211_sta *sta)
3854 {
3855         struct mwl8k_priv *priv = hw->priv;
3856
3857         if (priv->ap_fw)
3858                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
3859         else
3860                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
3861 }
3862
3863 static int mwl8k_sta_add(struct ieee80211_hw *hw,
3864                          struct ieee80211_vif *vif,
3865                          struct ieee80211_sta *sta)
3866 {
3867         struct mwl8k_priv *priv = hw->priv;
3868         int ret;
3869
3870         if (!priv->ap_fw) {
3871                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
3872                 if (ret >= 0) {
3873                         MWL8K_STA(sta)->peer_id = ret;
3874                         return 0;
3875                 }
3876
3877                 return ret;
3878         }
3879
3880         return mwl8k_cmd_set_new_stn_add(hw, vif, sta);
3881 }
3882
3883 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3884                          const struct ieee80211_tx_queue_params *params)
3885 {
3886         struct mwl8k_priv *priv = hw->priv;
3887         int rc;
3888
3889         rc = mwl8k_fw_lock(hw);
3890         if (!rc) {
3891                 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
3892                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
3893
3894                 if (!priv->wmm_enabled)
3895                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3896
3897                 if (!rc)
3898                         rc = mwl8k_cmd_set_edca_params(hw, queue,
3899                                                        params->cw_min,
3900                                                        params->cw_max,
3901                                                        params->aifs,
3902                                                        params->txop);
3903
3904                 mwl8k_fw_unlock(hw);
3905         }
3906
3907         return rc;
3908 }
3909
3910 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3911                            struct ieee80211_low_level_stats *stats)
3912 {
3913         return mwl8k_cmd_get_stat(hw, stats);
3914 }
3915
3916 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
3917                                 struct survey_info *survey)
3918 {
3919         struct mwl8k_priv *priv = hw->priv;
3920         struct ieee80211_conf *conf = &hw->conf;
3921
3922         if (idx != 0)
3923                 return -ENOENT;
3924
3925         survey->channel = conf->channel;
3926         survey->filled = SURVEY_INFO_NOISE_DBM;
3927         survey->noise = priv->noise;
3928
3929         return 0;
3930 }
3931
3932 static int
3933 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3934                    enum ieee80211_ampdu_mlme_action action,
3935                    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3936 {
3937         switch (action) {
3938         case IEEE80211_AMPDU_RX_START:
3939         case IEEE80211_AMPDU_RX_STOP:
3940                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
3941                         return -ENOTSUPP;
3942                 return 0;
3943         default:
3944                 return -ENOTSUPP;
3945         }
3946 }
3947
3948 static const struct ieee80211_ops mwl8k_ops = {
3949         .tx                     = mwl8k_tx,
3950         .start                  = mwl8k_start,
3951         .stop                   = mwl8k_stop,
3952         .add_interface          = mwl8k_add_interface,
3953         .remove_interface       = mwl8k_remove_interface,
3954         .config                 = mwl8k_config,
3955         .bss_info_changed       = mwl8k_bss_info_changed,
3956         .prepare_multicast      = mwl8k_prepare_multicast,
3957         .configure_filter       = mwl8k_configure_filter,
3958         .set_rts_threshold      = mwl8k_set_rts_threshold,
3959         .sta_add                = mwl8k_sta_add,
3960         .sta_remove             = mwl8k_sta_remove,
3961         .conf_tx                = mwl8k_conf_tx,
3962         .get_stats              = mwl8k_get_stats,
3963         .get_survey             = mwl8k_get_survey,
3964         .ampdu_action           = mwl8k_ampdu_action,
3965 };
3966
3967 static void mwl8k_finalize_join_worker(struct work_struct *work)
3968 {
3969         struct mwl8k_priv *priv =
3970                 container_of(work, struct mwl8k_priv, finalize_join_worker);
3971         struct sk_buff *skb = priv->beacon_skb;
3972         struct ieee80211_mgmt *mgmt = (void *)skb->data;
3973         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
3974         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
3975                                          mgmt->u.beacon.variable, len);
3976         int dtim_period = 1;
3977
3978         if (tim && tim[1] >= 2)
3979                 dtim_period = tim[3];
3980
3981         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
3982
3983         dev_kfree_skb(skb);
3984         priv->beacon_skb = NULL;
3985 }
3986
3987 enum {
3988         MWL8363 = 0,
3989         MWL8687,
3990         MWL8366,
3991 };
3992
3993 #define MWL8K_8366_AP_FW_API 1
3994 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
3995 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
3996
3997 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3998         [MWL8363] = {
3999                 .part_name      = "88w8363",
4000                 .helper_image   = "mwl8k/helper_8363.fw",
4001                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
4002         },
4003         [MWL8687] = {
4004                 .part_name      = "88w8687",
4005                 .helper_image   = "mwl8k/helper_8687.fw",
4006                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
4007         },
4008         [MWL8366] = {
4009                 .part_name      = "88w8366",
4010                 .helper_image   = "mwl8k/helper_8366.fw",
4011                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
4012                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4013                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
4014                 .ap_rxd_ops     = &rxd_8366_ap_ops,
4015         },
4016 };
4017
4018 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4019 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4020 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4021 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4022 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4023 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4024 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4025
4026 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4027         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4028         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4029         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4030         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4031         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4032         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4033         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4034         { },
4035 };
4036 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4037
4038 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4039 {
4040         int rc;
4041         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4042                "Trying alternative firmware %s\n", pci_name(priv->pdev),
4043                priv->fw_pref, priv->fw_alt);
4044         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4045         if (rc) {
4046                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4047                        pci_name(priv->pdev), priv->fw_alt);
4048                 return rc;
4049         }
4050         return 0;
4051 }
4052
4053 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4054 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4055 {
4056         struct mwl8k_priv *priv = context;
4057         struct mwl8k_device_info *di = priv->device_info;
4058         int rc;
4059
4060         switch (priv->fw_state) {
4061         case FW_STATE_INIT:
4062                 if (!fw) {
4063                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4064                                pci_name(priv->pdev), di->helper_image);
4065                         goto fail;
4066                 }
4067                 priv->fw_helper = fw;
4068                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4069                                       true);
4070                 if (rc && priv->fw_alt) {
4071                         rc = mwl8k_request_alt_fw(priv);
4072                         if (rc)
4073                                 goto fail;
4074                         priv->fw_state = FW_STATE_LOADING_ALT;
4075                 } else if (rc)
4076                         goto fail;
4077                 else
4078                         priv->fw_state = FW_STATE_LOADING_PREF;
4079                 break;
4080
4081         case FW_STATE_LOADING_PREF:
4082                 if (!fw) {
4083                         if (priv->fw_alt) {
4084                                 rc = mwl8k_request_alt_fw(priv);
4085                                 if (rc)
4086                                         goto fail;
4087                                 priv->fw_state = FW_STATE_LOADING_ALT;
4088                         } else
4089                                 goto fail;
4090                 } else {
4091                         priv->fw_ucode = fw;
4092                         rc = mwl8k_firmware_load_success(priv);
4093                         if (rc)
4094                                 goto fail;
4095                         else
4096                                 complete(&priv->firmware_loading_complete);
4097                 }
4098                 break;
4099
4100         case FW_STATE_LOADING_ALT:
4101                 if (!fw) {
4102                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4103                                pci_name(priv->pdev), di->helper_image);
4104                         goto fail;
4105                 }
4106                 priv->fw_ucode = fw;
4107                 rc = mwl8k_firmware_load_success(priv);
4108                 if (rc)
4109                         goto fail;
4110                 else
4111                         complete(&priv->firmware_loading_complete);
4112                 break;
4113
4114         default:
4115                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4116                        MWL8K_NAME, priv->fw_state);
4117                 BUG_ON(1);
4118         }
4119
4120         return;
4121
4122 fail:
4123         priv->fw_state = FW_STATE_ERROR;
4124         complete(&priv->firmware_loading_complete);
4125         device_release_driver(&priv->pdev->dev);
4126         mwl8k_release_firmware(priv);
4127 }
4128
4129 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4130                                bool nowait)
4131 {
4132         struct mwl8k_priv *priv = hw->priv;
4133         int rc;
4134
4135         /* Reset firmware and hardware */
4136         mwl8k_hw_reset(priv);
4137
4138         /* Ask userland hotplug daemon for the device firmware */
4139         rc = mwl8k_request_firmware(priv, fw_image, nowait);
4140         if (rc) {
4141                 wiphy_err(hw->wiphy, "Firmware files not found\n");
4142                 return rc;
4143         }
4144
4145         if (nowait)
4146                 return rc;
4147
4148         /* Load firmware into hardware */
4149         rc = mwl8k_load_firmware(hw);
4150         if (rc)
4151                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4152
4153         /* Reclaim memory once firmware is successfully loaded */
4154         mwl8k_release_firmware(priv);
4155
4156         return rc;
4157 }
4158
4159 /* initialize hw after successfully loading a firmware image */
4160 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4161 {
4162         struct mwl8k_priv *priv = hw->priv;
4163         int rc = 0;
4164         int i;
4165
4166         if (priv->ap_fw) {
4167                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4168                 if (priv->rxd_ops == NULL) {
4169                         wiphy_err(hw->wiphy,
4170                                   "Driver does not have AP firmware image support for this hardware\n");
4171                         goto err_stop_firmware;
4172                 }
4173         } else {
4174                 priv->rxd_ops = &rxd_sta_ops;
4175         }
4176
4177         priv->sniffer_enabled = false;
4178         priv->wmm_enabled = false;
4179         priv->pending_tx_pkts = 0;
4180
4181         rc = mwl8k_rxq_init(hw, 0);
4182         if (rc)
4183                 goto err_stop_firmware;
4184         rxq_refill(hw, 0, INT_MAX);
4185
4186         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4187                 rc = mwl8k_txq_init(hw, i);
4188                 if (rc)
4189                         goto err_free_queues;
4190         }
4191
4192         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4193         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4194         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4195                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4196         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4197
4198         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4199                          IRQF_SHARED, MWL8K_NAME, hw);
4200         if (rc) {
4201                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4202                 goto err_free_queues;
4203         }
4204
4205         /*
4206          * Temporarily enable interrupts.  Initial firmware host
4207          * commands use interrupts and avoid polling.  Disable
4208          * interrupts when done.
4209          */
4210         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4211
4212         /* Get config data, mac addrs etc */
4213         if (priv->ap_fw) {
4214                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4215                 if (!rc)
4216                         rc = mwl8k_cmd_set_hw_spec(hw);
4217         } else {
4218                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4219         }
4220         if (rc) {
4221                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4222                 goto err_free_irq;
4223         }
4224
4225         /* Turn radio off */
4226         rc = mwl8k_cmd_radio_disable(hw);
4227         if (rc) {
4228                 wiphy_err(hw->wiphy, "Cannot disable\n");
4229                 goto err_free_irq;
4230         }
4231
4232         /* Clear MAC address */
4233         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4234         if (rc) {
4235                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4236                 goto err_free_irq;
4237         }
4238
4239         /* Disable interrupts */
4240         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4241         free_irq(priv->pdev->irq, hw);
4242
4243         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4244                    priv->device_info->part_name,
4245                    priv->hw_rev, hw->wiphy->perm_addr,
4246                    priv->ap_fw ? "AP" : "STA",
4247                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4248                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4249
4250         return 0;
4251
4252 err_free_irq:
4253         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4254         free_irq(priv->pdev->irq, hw);
4255
4256 err_free_queues:
4257         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4258                 mwl8k_txq_deinit(hw, i);
4259         mwl8k_rxq_deinit(hw, 0);
4260
4261 err_stop_firmware:
4262         mwl8k_hw_reset(priv);
4263
4264         return rc;
4265 }
4266
4267 /*
4268  * invoke mwl8k_reload_firmware to change the firmware image after the device
4269  * has already been registered
4270  */
4271 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4272 {
4273         int i, rc = 0;
4274         struct mwl8k_priv *priv = hw->priv;
4275
4276         mwl8k_stop(hw);
4277         mwl8k_rxq_deinit(hw, 0);
4278
4279         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4280                 mwl8k_txq_deinit(hw, i);
4281
4282         rc = mwl8k_init_firmware(hw, fw_image, false);
4283         if (rc)
4284                 goto fail;
4285
4286         rc = mwl8k_probe_hw(hw);
4287         if (rc)
4288                 goto fail;
4289
4290         rc = mwl8k_start(hw);
4291         if (rc)
4292                 goto fail;
4293
4294         rc = mwl8k_config(hw, ~0);
4295         if (rc)
4296                 goto fail;
4297
4298         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4299                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4300                 if (rc)
4301                         goto fail;
4302         }
4303
4304         return rc;
4305
4306 fail:
4307         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4308         return rc;
4309 }
4310
4311 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4312 {
4313         struct ieee80211_hw *hw = priv->hw;
4314         int i, rc;
4315
4316         rc = mwl8k_load_firmware(hw);
4317         mwl8k_release_firmware(priv);
4318         if (rc) {
4319                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4320                 return rc;
4321         }
4322
4323         /*
4324          * Extra headroom is the size of the required DMA header
4325          * minus the size of the smallest 802.11 frame (CTS frame).
4326          */
4327         hw->extra_tx_headroom =
4328                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4329
4330         hw->channel_change_time = 10;
4331
4332         hw->queues = MWL8K_TX_QUEUES;
4333
4334         /* Set rssi values to dBm */
4335         hw->flags |= IEEE80211_HW_SIGNAL_DBM;
4336         hw->vif_data_size = sizeof(struct mwl8k_vif);
4337         hw->sta_data_size = sizeof(struct mwl8k_sta);
4338
4339         priv->macids_used = 0;
4340         INIT_LIST_HEAD(&priv->vif_list);
4341
4342         /* Set default radio state and preamble */
4343         priv->radio_on = 0;
4344         priv->radio_short_preamble = 0;
4345
4346         /* Finalize join worker */
4347         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4348
4349         /* TX reclaim and RX tasklets.  */
4350         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4351         tasklet_disable(&priv->poll_tx_task);
4352         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4353         tasklet_disable(&priv->poll_rx_task);
4354
4355         /* Power management cookie */
4356         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4357         if (priv->cookie == NULL)
4358                 return -ENOMEM;
4359
4360         mutex_init(&priv->fw_mutex);
4361         priv->fw_mutex_owner = NULL;
4362         priv->fw_mutex_depth = 0;
4363         priv->hostcmd_wait = NULL;
4364
4365         spin_lock_init(&priv->tx_lock);
4366
4367         priv->tx_wait = NULL;
4368
4369         rc = mwl8k_probe_hw(hw);
4370         if (rc)
4371                 goto err_free_cookie;
4372
4373         hw->wiphy->interface_modes = 0;
4374         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4375                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4376         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4377                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4378
4379         rc = ieee80211_register_hw(hw);
4380         if (rc) {
4381                 wiphy_err(hw->wiphy, "Cannot register device\n");
4382                 goto err_unprobe_hw;
4383         }
4384
4385         return 0;
4386
4387 err_unprobe_hw:
4388         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4389                 mwl8k_txq_deinit(hw, i);
4390         mwl8k_rxq_deinit(hw, 0);
4391
4392 err_free_cookie:
4393         if (priv->cookie != NULL)
4394                 pci_free_consistent(priv->pdev, 4,
4395                                 priv->cookie, priv->cookie_dma);
4396
4397         return rc;
4398 }
4399 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4400                                  const struct pci_device_id *id)
4401 {
4402         static int printed_version;
4403         struct ieee80211_hw *hw;
4404         struct mwl8k_priv *priv;
4405         struct mwl8k_device_info *di;
4406         int rc;
4407
4408         if (!printed_version) {
4409                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4410                 printed_version = 1;
4411         }
4412
4413
4414         rc = pci_enable_device(pdev);
4415         if (rc) {
4416                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4417                        MWL8K_NAME);
4418                 return rc;
4419         }
4420
4421         rc = pci_request_regions(pdev, MWL8K_NAME);
4422         if (rc) {
4423                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4424                        MWL8K_NAME);
4425                 goto err_disable_device;
4426         }
4427
4428         pci_set_master(pdev);
4429
4430
4431         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4432         if (hw == NULL) {
4433                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4434                 rc = -ENOMEM;
4435                 goto err_free_reg;
4436         }
4437
4438         SET_IEEE80211_DEV(hw, &pdev->dev);
4439         pci_set_drvdata(pdev, hw);
4440
4441         priv = hw->priv;
4442         priv->hw = hw;
4443         priv->pdev = pdev;
4444         priv->device_info = &mwl8k_info_tbl[id->driver_data];
4445
4446
4447         priv->sram = pci_iomap(pdev, 0, 0x10000);
4448         if (priv->sram == NULL) {
4449                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4450                 goto err_iounmap;
4451         }
4452
4453         /*
4454          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4455          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4456          */
4457         priv->regs = pci_iomap(pdev, 1, 0x10000);
4458         if (priv->regs == NULL) {
4459                 priv->regs = pci_iomap(pdev, 2, 0x10000);
4460                 if (priv->regs == NULL) {
4461                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
4462                         goto err_iounmap;
4463                 }
4464         }
4465
4466         /*
4467          * Choose the initial fw image depending on user input.  If a second
4468          * image is available, make it the alternative image that will be
4469          * loaded if the first one fails.
4470          */
4471         init_completion(&priv->firmware_loading_complete);
4472         di = priv->device_info;
4473         if (ap_mode_default && di->fw_image_ap) {
4474                 priv->fw_pref = di->fw_image_ap;
4475                 priv->fw_alt = di->fw_image_sta;
4476         } else if (!ap_mode_default && di->fw_image_sta) {
4477                 priv->fw_pref = di->fw_image_sta;
4478                 priv->fw_alt = di->fw_image_ap;
4479         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4480                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
4481                 priv->fw_pref = di->fw_image_sta;
4482         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4483                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
4484                 priv->fw_pref = di->fw_image_ap;
4485         }
4486         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4487         if (rc)
4488                 goto err_stop_firmware;
4489         return rc;
4490
4491 err_stop_firmware:
4492         mwl8k_hw_reset(priv);
4493
4494 err_iounmap:
4495         if (priv->regs != NULL)
4496                 pci_iounmap(pdev, priv->regs);
4497
4498         if (priv->sram != NULL)
4499                 pci_iounmap(pdev, priv->sram);
4500
4501         pci_set_drvdata(pdev, NULL);
4502         ieee80211_free_hw(hw);
4503
4504 err_free_reg:
4505         pci_release_regions(pdev);
4506
4507 err_disable_device:
4508         pci_disable_device(pdev);
4509
4510         return rc;
4511 }
4512
4513 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4514 {
4515         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4516 }
4517
4518 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4519 {
4520         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4521         struct mwl8k_priv *priv;
4522         int i;
4523
4524         if (hw == NULL)
4525                 return;
4526         priv = hw->priv;
4527
4528         wait_for_completion(&priv->firmware_loading_complete);
4529
4530         if (priv->fw_state == FW_STATE_ERROR) {
4531                 mwl8k_hw_reset(priv);
4532                 goto unmap;
4533         }
4534
4535         ieee80211_stop_queues(hw);
4536
4537         ieee80211_unregister_hw(hw);
4538
4539         /* Remove TX reclaim and RX tasklets.  */
4540         tasklet_kill(&priv->poll_tx_task);
4541         tasklet_kill(&priv->poll_rx_task);
4542
4543         /* Stop hardware */
4544         mwl8k_hw_reset(priv);
4545
4546         /* Return all skbs to mac80211 */
4547         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4548                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4549
4550         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4551                 mwl8k_txq_deinit(hw, i);
4552
4553         mwl8k_rxq_deinit(hw, 0);
4554
4555         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4556
4557 unmap:
4558         pci_iounmap(pdev, priv->regs);
4559         pci_iounmap(pdev, priv->sram);
4560         pci_set_drvdata(pdev, NULL);
4561         ieee80211_free_hw(hw);
4562         pci_release_regions(pdev);
4563         pci_disable_device(pdev);
4564 }
4565
4566 static struct pci_driver mwl8k_driver = {
4567         .name           = MWL8K_NAME,
4568         .id_table       = mwl8k_pci_id_table,
4569         .probe          = mwl8k_probe,
4570         .remove         = __devexit_p(mwl8k_remove),
4571         .shutdown       = __devexit_p(mwl8k_shutdown),
4572 };
4573
4574 static int __init mwl8k_init(void)
4575 {
4576         return pci_register_driver(&mwl8k_driver);
4577 }
4578
4579 static void __exit mwl8k_exit(void)
4580 {
4581         pci_unregister_driver(&mwl8k_driver);
4582 }
4583
4584 module_init(mwl8k_init);
4585 module_exit(mwl8k_exit);
4586
4587 MODULE_DESCRIPTION(MWL8K_DESC);
4588 MODULE_VERSION(MWL8K_VERSION);
4589 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
4590 MODULE_LICENSE("GPL");