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         struct firmware *fw_helper;
 148         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(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, 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((const struct firmware **)fw,
 436                                         fname, &priv->pdev->dev);
 437 }
 438
 439 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
 440                                   bool nowait)
 441 {
 442         struct mwl8k_device_info *di = priv->device_info;
 443         int rc;
 444
 445         if (di->helper_image != NULL) {
 446                 if (nowait)
 447                         rc = mwl8k_request_fw(priv, di->helper_image,
 448                                               &priv->fw_helper, true);
 449                 else
 450                         rc = mwl8k_request_fw(priv, di->helper_image,
 451                                               &priv->fw_helper, false);
 452                 if (rc)
 453                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
 454                                pci_name(priv->pdev), di->helper_image);
 455
 456                 if (rc || nowait)
 457                         return rc;
 458         }
 459
 460         if (nowait) {
 461                 /*
 462                  * if we get here, no helper image is needed.  Skip the
 463                  * FW_STATE_INIT state.
 464                  */
 465                 priv->fw_state = FW_STATE_LOADING_PREF;
 466                 rc = mwl8k_request_fw(priv, fw_image,
 467                                       &priv->fw_ucode,
 468                                       true);
 469         } else
 470                 rc = mwl8k_request_fw(priv, fw_image,
 471                                       &priv->fw_ucode, false);
 472         if (rc) {
 473                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 474                        pci_name(priv->pdev), fw_image);
 475                 mwl8k_release_fw(&priv->fw_helper);
 476                 return rc;
 477         }
 478
 479         return 0;
 480 }
 481
 482 struct mwl8k_cmd_pkt {
 483         __le16  code;
 484         __le16  length;
 485         __u8    seq_num;
 486         __u8    macid;
 487         __le16  result;
 488         char    payload[0];
 489 } __packed;
 490
 491 /*
 492  * Firmware loading.
 493  */
 494 static int
 495 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 496 {
 497         void __iomem *regs = priv->regs;
 498         dma_addr_t dma_addr;
 499         int loops;
 500
 501         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 502         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 503                 return -ENOMEM;
 504
 505         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 506         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 507         iowrite32(MWL8K_H2A_INT_DOORBELL,
 508                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 509         iowrite32(MWL8K_H2A_INT_DUMMY,
 510                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 511
 512         loops = 1000;
 513         do {
 514                 u32 int_code;
 515
 516                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 517                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 518                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 519                         break;
 520                 }
 521
 522                 cond_resched();
 523                 udelay(1);
 524         } while (--loops);
 525
 526         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 527
 528         return loops ? 0 : -ETIMEDOUT;
 529 }
 530
 531 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 532                                 const u8 *data, size_t length)
 533 {
 534         struct mwl8k_cmd_pkt *cmd;
 535         int done;
 536         int rc = 0;
 537
 538         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 539         if (cmd == NULL)
 540                 return -ENOMEM;
 541
 542         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 543         cmd->seq_num = 0;
 544         cmd->macid = 0;
 545         cmd->result = 0;
 546
 547         done = 0;
 548         while (length) {
 549                 int block_size = length > 256 ? 256 : length;
 550
 551                 memcpy(cmd->payload, data + done, block_size);
 552                 cmd->length = cpu_to_le16(block_size);
 553
 554                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 555                                                 sizeof(*cmd) + block_size);
 556                 if (rc)
 557                         break;
 558
 559                 done += block_size;
 560                 length -= block_size;
 561         }
 562
 563         if (!rc) {
 564                 cmd->length = 0;
 565                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 566         }
 567
 568         kfree(cmd);
 569
 570         return rc;
 571 }
 572
 573 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 574                                 const u8 *data, size_t length)
 575 {
 576         unsigned char *buffer;
 577         int may_continue, rc = 0;
 578         u32 done, prev_block_size;
 579
 580         buffer = kmalloc(1024, GFP_KERNEL);
 581         if (buffer == NULL)
 582                 return -ENOMEM;
 583
 584         done = 0;
 585         prev_block_size = 0;
 586         may_continue = 1000;
 587         while (may_continue > 0) {
 588                 u32 block_size;
 589
 590                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 591                 if (block_size & 1) {
 592                         block_size &= ~1;
 593                         may_continue--;
 594                 } else {
 595                         done += prev_block_size;
 596                         length -= prev_block_size;
 597                 }
 598
 599                 if (block_size > 1024 || block_size > length) {
 600                         rc = -EOVERFLOW;
 601                         break;
 602                 }
 603
 604                 if (length == 0) {
 605                         rc = 0;
 606                         break;
 607                 }
 608
 609                 if (block_size == 0) {
 610                         rc = -EPROTO;
 611                         may_continue--;
 612                         udelay(1);
 613                         continue;
 614                 }
 615
 616                 prev_block_size = block_size;
 617                 memcpy(buffer, data + done, block_size);
 618
 619                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 620                 if (rc)
 621                         break;
 622         }
 623
 624         if (!rc && length != 0)
 625                 rc = -EREMOTEIO;
 626
 627         kfree(buffer);
 628
 629         return rc;
 630 }
 631
 632 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 633 {
 634         struct mwl8k_priv *priv = hw->priv;
 635         struct firmware *fw = priv->fw_ucode;
 636         int rc;
 637         int loops;
 638
 639         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 640                 struct firmware *helper = priv->fw_helper;
 641
 642                 if (helper == NULL) {
 643                         printk(KERN_ERR "%s: helper image needed but none "
 644                                "given\n", pci_name(priv->pdev));
 645                         return -EINVAL;
 646                 }
 647
 648                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 649                 if (rc) {
 650                         printk(KERN_ERR "%s: unable to load firmware "
 651                                "helper image\n", pci_name(priv->pdev));
 652                         return rc;
 653                 }
 654                 msleep(5);
 655
 656                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 657         } else {
 658                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 659         }
 660
 661         if (rc) {
 662                 printk(KERN_ERR "%s: unable to load firmware image\n",
 663                        pci_name(priv->pdev));
 664                 return rc;
 665         }
 666
 667         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 668
 669         loops = 500000;
 670         do {
 671                 u32 ready_code;
 672
 673                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 674                 if (ready_code == MWL8K_FWAP_READY) {
 675                         priv->ap_fw = 1;
 676                         break;
 677                 } else if (ready_code == MWL8K_FWSTA_READY) {
 678                         priv->ap_fw = 0;
 679                         break;
 680                 }
 681
 682                 cond_resched();
 683                 udelay(1);
 684         } while (--loops);
 685
 686         return loops ? 0 : -ETIMEDOUT;
 687 }
 688
 689
 690 /* DMA header used by firmware and hardware.  */
 691 struct mwl8k_dma_data {
 692         __le16 fwlen;
 693         struct ieee80211_hdr wh;
 694         char data[0];
 695 } __packed;
 696
 697 /* Routines to add/remove DMA header from skb.  */
 698 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 699 {
 700         struct mwl8k_dma_data *tr;
 701         int hdrlen;
 702
 703         tr = (struct mwl8k_dma_data *)skb->data;
 704         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 705
 706         if (hdrlen != sizeof(tr->wh)) {
 707                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 708                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 709                         *((__le16 *)(tr->data - 2)) = qos;
 710                 } else {
 711                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 712                 }
 713         }
 714
 715         if (hdrlen != sizeof(*tr))
 716                 skb_pull(skb, sizeof(*tr) - hdrlen);
 717 }
 718
 719 static inline void mwl8k_add_dma_header(struct sk_buff *skb)
 720 {
 721         struct ieee80211_hdr *wh;
 722         int hdrlen;
 723         struct mwl8k_dma_data *tr;
 724
 725         /*
 726          * Add a firmware DMA header; the firmware requires that we
 727          * present a 2-byte payload length followed by a 4-address
 728          * header (without QoS field), followed (optionally) by any
 729          * WEP/ExtIV header (but only filled in for CCMP).
 730          */
 731         wh = (struct ieee80211_hdr *)skb->data;
 732
 733         hdrlen = ieee80211_hdrlen(wh->frame_control);
 734         if (hdrlen != sizeof(*tr))
 735                 skb_push(skb, sizeof(*tr) - hdrlen);
 736
 737         if (ieee80211_is_data_qos(wh->frame_control))
 738                 hdrlen -= 2;
 739
 740         tr = (struct mwl8k_dma_data *)skb->data;
 741         if (wh != &tr->wh)
 742                 memmove(&tr->wh, wh, hdrlen);
 743         if (hdrlen != sizeof(tr->wh))
 744                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 745
 746         /*
 747          * Firmware length is the length of the fully formed "802.11
 748          * payload".  That is, everything except for the 802.11 header.
 749          * This includes all crypto material including the MIC.
 750          */
 751         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
 752 }
 753
 754
 755 /*
 756  * Packet reception for 88w8366 AP firmware.
 757  */
 758 struct mwl8k_rxd_8366_ap {
 759         __le16 pkt_len;
 760         __u8 sq2;
 761         __u8 rate;
 762         __le32 pkt_phys_addr;
 763         __le32 next_rxd_phys_addr;
 764         __le16 qos_control;
 765         __le16 htsig2;
 766         __le32 hw_rssi_info;
 767         __le32 hw_noise_floor_info;
 768         __u8 noise_floor;
 769         __u8 pad0[3];
 770         __u8 rssi;
 771         __u8 rx_status;
 772         __u8 channel;
 773         __u8 rx_ctrl;
 774 } __packed;
 775
 776 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 777 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 778 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 779
 780 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 781
 782 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 783 {
 784         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 785
 786         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 787         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 788 }
 789
 790 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 791 {
 792         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 793
 794         rxd->pkt_len = cpu_to_le16(len);
 795         rxd->pkt_phys_addr = cpu_to_le32(addr);
 796         wmb();
 797         rxd->rx_ctrl = 0;
 798 }
 799
 800 static int
 801 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 802                           __le16 *qos, s8 *noise)
 803 {
 804         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 805
 806         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 807                 return -1;
 808         rmb();
 809
 810         memset(status, 0, sizeof(*status));
 811
 812         status->signal = -rxd->rssi;
 813         *noise = -rxd->noise_floor;
 814
 815         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 816                 status->flag |= RX_FLAG_HT;
 817                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 818                         status->flag |= RX_FLAG_40MHZ;
 819                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 820         } else {
 821                 int i;
 822
 823                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 824                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 825                                 status->rate_idx = i;
 826                                 break;
 827                         }
 828                 }
 829         }
 830
 831         if (rxd->channel > 14) {
 832                 status->band = IEEE80211_BAND_5GHZ;
 833                 if (!(status->flag & RX_FLAG_HT))
 834                         status->rate_idx -= 5;
 835         } else {
 836                 status->band = IEEE80211_BAND_2GHZ;
 837         }
 838         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 839
 840         *qos = rxd->qos_control;
 841
 842         return le16_to_cpu(rxd->pkt_len);
 843 }
 844
 845 static struct rxd_ops rxd_8366_ap_ops = {
 846         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 847         .rxd_init       = mwl8k_rxd_8366_ap_init,
 848         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 849         .rxd_process    = mwl8k_rxd_8366_ap_process,
 850 };
 851
 852 /*
 853  * Packet reception for STA firmware.
 854  */
 855 struct mwl8k_rxd_sta {
 856         __le16 pkt_len;
 857         __u8 link_quality;
 858         __u8 noise_level;
 859         __le32 pkt_phys_addr;
 860         __le32 next_rxd_phys_addr;
 861         __le16 qos_control;
 862         __le16 rate_info;
 863         __le32 pad0[4];
 864         __u8 rssi;
 865         __u8 channel;
 866         __le16 pad1;
 867         __u8 rx_ctrl;
 868         __u8 rx_status;
 869         __u8 pad2[2];
 870 } __packed;
 871
 872 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 873 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 874 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 875 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 876 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 877 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 878
 879 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 880
 881 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 882 {
 883         struct mwl8k_rxd_sta *rxd = _rxd;
 884
 885         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 886         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 887 }
 888
 889 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 890 {
 891         struct mwl8k_rxd_sta *rxd = _rxd;
 892
 893         rxd->pkt_len = cpu_to_le16(len);
 894         rxd->pkt_phys_addr = cpu_to_le32(addr);
 895         wmb();
 896         rxd->rx_ctrl = 0;
 897 }
 898
 899 static int
 900 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 901                        __le16 *qos, s8 *noise)
 902 {
 903         struct mwl8k_rxd_sta *rxd = _rxd;
 904         u16 rate_info;
 905
 906         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 907                 return -1;
 908         rmb();
 909
 910         rate_info = le16_to_cpu(rxd->rate_info);
 911
 912         memset(status, 0, sizeof(*status));
 913
 914         status->signal = -rxd->rssi;
 915         *noise = -rxd->noise_level;
 916         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 917         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
 918
 919         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
 920                 status->flag |= RX_FLAG_SHORTPRE;
 921         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
 922                 status->flag |= RX_FLAG_40MHZ;
 923         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
 924                 status->flag |= RX_FLAG_SHORT_GI;
 925         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
 926                 status->flag |= RX_FLAG_HT;
 927
 928         if (rxd->channel > 14) {
 929                 status->band = IEEE80211_BAND_5GHZ;
 930                 if (!(status->flag & RX_FLAG_HT))
 931                         status->rate_idx -= 5;
 932         } else {
 933                 status->band = IEEE80211_BAND_2GHZ;
 934         }
 935         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 936
 937         *qos = rxd->qos_control;
 938
 939         return le16_to_cpu(rxd->pkt_len);
 940 }
 941
 942 static struct rxd_ops rxd_sta_ops = {
 943         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
 944         .rxd_init       = mwl8k_rxd_sta_init,
 945         .rxd_refill     = mwl8k_rxd_sta_refill,
 946         .rxd_process    = mwl8k_rxd_sta_process,
 947 };
 948
 949
 950 #define MWL8K_RX_DESCS          256
 951 #define MWL8K_RX_MAXSZ          3800
 952
 953 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 954 {
 955         struct mwl8k_priv *priv = hw->priv;
 956         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 957         int size;
 958         int i;
 959
 960         rxq->rxd_count = 0;
 961         rxq->head = 0;
 962         rxq->tail = 0;
 963
 964         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 965
 966         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 967         if (rxq->rxd == NULL) {
 968                 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
 969                 return -ENOMEM;
 970         }
 971         memset(rxq->rxd, 0, size);
 972
 973         rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
 974         if (rxq->buf == NULL) {
 975                 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
 976                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
 977                 return -ENOMEM;
 978         }
 979         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
 980
 981         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 982                 int desc_size;
 983                 void *rxd;
 984                 int nexti;
 985                 dma_addr_t next_dma_addr;
 986
 987                 desc_size = priv->rxd_ops->rxd_size;
 988                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
 989
 990                 nexti = i + 1;
 991                 if (nexti == MWL8K_RX_DESCS)
 992                         nexti = 0;
 993                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
 994
 995                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
 996         }
 997
 998         return 0;
 999 }
1000
1001 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1002 {
1003         struct mwl8k_priv *priv = hw->priv;
1004         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1005         int refilled;
1006
1007         refilled = 0;
1008         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1009                 struct sk_buff *skb;
1010                 dma_addr_t addr;
1011                 int rx;
1012                 void *rxd;
1013
1014                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1015                 if (skb == NULL)
1016                         break;
1017
1018                 addr = pci_map_single(priv->pdev, skb->data,
1019                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1020
1021                 rxq->rxd_count++;
1022                 rx = rxq->tail++;
1023                 if (rxq->tail == MWL8K_RX_DESCS)
1024                         rxq->tail = 0;
1025                 rxq->buf[rx].skb = skb;
1026                 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1027
1028                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1029                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1030
1031                 refilled++;
1032         }
1033
1034         return refilled;
1035 }
1036
1037 /* Must be called only when the card's reception is completely halted */
1038 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1039 {
1040         struct mwl8k_priv *priv = hw->priv;
1041         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1042         int i;
1043
1044         for (i = 0; i < MWL8K_RX_DESCS; i++) {
1045                 if (rxq->buf[i].skb != NULL) {
1046                         pci_unmap_single(priv->pdev,
1047                                          dma_unmap_addr(&rxq->buf[i], dma),
1048                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1049                         dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1050
1051                         kfree_skb(rxq->buf[i].skb);
1052                         rxq->buf[i].skb = NULL;
1053                 }
1054         }
1055
1056         kfree(rxq->buf);
1057         rxq->buf = NULL;
1058
1059         pci_free_consistent(priv->pdev,
1060                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1061                             rxq->rxd, rxq->rxd_dma);
1062         rxq->rxd = NULL;
1063 }
1064
1065
1066 /*
1067  * Scan a list of BSSIDs to process for finalize join.
1068  * Allows for extension to process multiple BSSIDs.
1069  */
1070 static inline int
1071 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1072 {
1073         return priv->capture_beacon &&
1074                 ieee80211_is_beacon(wh->frame_control) &&
1075                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1076 }
1077
1078 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1079                                      struct sk_buff *skb)
1080 {
1081         struct mwl8k_priv *priv = hw->priv;
1082
1083         priv->capture_beacon = false;
1084         memset(priv->capture_bssid, 0, ETH_ALEN);
1085
1086         /*
1087          * Use GFP_ATOMIC as rxq_process is called from
1088          * the primary interrupt handler, memory allocation call
1089          * must not sleep.
1090          */
1091         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1092         if (priv->beacon_skb != NULL)
1093                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1094 }
1095
1096 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1097 {
1098         struct mwl8k_priv *priv = hw->priv;
1099         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1100         int processed;
1101
1102         processed = 0;
1103         while (rxq->rxd_count && limit--) {
1104                 struct sk_buff *skb;
1105                 void *rxd;
1106                 int pkt_len;
1107                 struct ieee80211_rx_status status;
1108                 __le16 qos;
1109
1110                 skb = rxq->buf[rxq->head].skb;
1111                 if (skb == NULL)
1112                         break;
1113
1114                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1115
1116                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1117                                                         &priv->noise);
1118                 if (pkt_len < 0)
1119                         break;
1120
1121                 rxq->buf[rxq->head].skb = NULL;
1122
1123                 pci_unmap_single(priv->pdev,
1124                                  dma_unmap_addr(&rxq->buf[rxq->head], dma),
1125                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1126                 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1127
1128                 rxq->head++;
1129                 if (rxq->head == MWL8K_RX_DESCS)
1130                         rxq->head = 0;
1131
1132                 rxq->rxd_count--;
1133
1134                 skb_put(skb, pkt_len);
1135                 mwl8k_remove_dma_header(skb, qos);
1136
1137                 /*
1138                  * Check for a pending join operation.  Save a
1139                  * copy of the beacon and schedule a tasklet to
1140                  * send a FINALIZE_JOIN command to the firmware.
1141                  */
1142                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1143                         mwl8k_save_beacon(hw, skb);
1144
1145                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1146                 ieee80211_rx_irqsafe(hw, skb);
1147
1148                 processed++;
1149         }
1150
1151         return processed;
1152 }
1153
1154
1155 /*
1156  * Packet transmission.
1157  */
1158
1159 #define MWL8K_TXD_STATUS_OK                     0x00000001
1160 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1161 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1162 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1163 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1164
1165 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1166 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1167 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1168 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1169 #define MWL8K_QOS_EOSP                          0x0010
1170
1171 struct mwl8k_tx_desc {
1172         __le32 status;
1173         __u8 data_rate;
1174         __u8 tx_priority;
1175         __le16 qos_control;
1176         __le32 pkt_phys_addr;
1177         __le16 pkt_len;
1178         __u8 dest_MAC_addr[ETH_ALEN];
1179         __le32 next_txd_phys_addr;
1180         __le32 reserved;
1181         __le16 rate_info;
1182         __u8 peer_id;
1183         __u8 tx_frag_cnt;
1184 } __packed;
1185
1186 #define MWL8K_TX_DESCS          128
1187
1188 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1189 {
1190         struct mwl8k_priv *priv = hw->priv;
1191         struct mwl8k_tx_queue *txq = priv->txq + index;
1192         int size;
1193         int i;
1194
1195         txq->len = 0;
1196         txq->head = 0;
1197         txq->tail = 0;
1198
1199         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1200
1201         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1202         if (txq->txd == NULL) {
1203                 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1204                 return -ENOMEM;
1205         }
1206         memset(txq->txd, 0, size);
1207
1208         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1209         if (txq->skb == NULL) {
1210                 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1211                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1212                 return -ENOMEM;
1213         }
1214         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1215
1216         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1217                 struct mwl8k_tx_desc *tx_desc;
1218                 int nexti;
1219
1220                 tx_desc = txq->txd + i;
1221                 nexti = (i + 1) % MWL8K_TX_DESCS;
1222
1223                 tx_desc->status = 0;
1224                 tx_desc->next_txd_phys_addr =
1225                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1226         }
1227
1228         return 0;
1229 }
1230
1231 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1232 {
1233         iowrite32(MWL8K_H2A_INT_PPA_READY,
1234                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1235         iowrite32(MWL8K_H2A_INT_DUMMY,
1236                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1237         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1238 }
1239
1240 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1241 {
1242         struct mwl8k_priv *priv = hw->priv;
1243         int i;
1244
1245         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1246                 struct mwl8k_tx_queue *txq = priv->txq + i;
1247                 int fw_owned = 0;
1248                 int drv_owned = 0;
1249                 int unused = 0;
1250                 int desc;
1251
1252                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1253                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1254                         u32 status;
1255
1256                         status = le32_to_cpu(tx_desc->status);
1257                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1258                                 fw_owned++;
1259                         else
1260                                 drv_owned++;
1261
1262                         if (tx_desc->pkt_len == 0)
1263                                 unused++;
1264                 }
1265
1266                 wiphy_err(hw->wiphy,
1267                           "txq[%d] len=%d head=%d tail=%d "
1268                           "fw_owned=%d drv_owned=%d unused=%d\n",
1269                           i,
1270                           txq->len, txq->head, txq->tail,
1271                           fw_owned, drv_owned, unused);
1272         }
1273 }
1274
1275 /*
1276  * Must be called with priv->fw_mutex held and tx queues stopped.
1277  */
1278 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1279
1280 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1281 {
1282         struct mwl8k_priv *priv = hw->priv;
1283         DECLARE_COMPLETION_ONSTACK(tx_wait);
1284         int retry;
1285         int rc;
1286
1287         might_sleep();
1288
1289         /*
1290          * The TX queues are stopped at this point, so this test
1291          * doesn't need to take ->tx_lock.
1292          */
1293         if (!priv->pending_tx_pkts)
1294                 return 0;
1295
1296         retry = 0;
1297         rc = 0;
1298
1299         spin_lock_bh(&priv->tx_lock);
1300         priv->tx_wait = &tx_wait;
1301         while (!rc) {
1302                 int oldcount;
1303                 unsigned long timeout;
1304
1305                 oldcount = priv->pending_tx_pkts;
1306
1307                 spin_unlock_bh(&priv->tx_lock);
1308                 timeout = wait_for_completion_timeout(&tx_wait,
1309                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1310                 spin_lock_bh(&priv->tx_lock);
1311
1312                 if (timeout) {
1313                         WARN_ON(priv->pending_tx_pkts);
1314                         if (retry) {
1315                                 wiphy_notice(hw->wiphy, "tx rings drained\n");
1316                         }
1317                         break;
1318                 }
1319
1320                 if (priv->pending_tx_pkts < oldcount) {
1321                         wiphy_notice(hw->wiphy,
1322                                      "waiting for tx rings to drain (%d -> %d pkts)\n",
1323                                      oldcount, priv->pending_tx_pkts);
1324                         retry = 1;
1325                         continue;
1326                 }
1327
1328                 priv->tx_wait = NULL;
1329
1330                 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1331                           MWL8K_TX_WAIT_TIMEOUT_MS);
1332                 mwl8k_dump_tx_rings(hw);
1333
1334                 rc = -ETIMEDOUT;
1335         }
1336         spin_unlock_bh(&priv->tx_lock);
1337
1338         return rc;
1339 }
1340
1341 #define MWL8K_TXD_SUCCESS(status)                               \
1342         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1343                      MWL8K_TXD_STATUS_OK_RETRY |                \
1344                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1345
1346 static int
1347 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1348 {
1349         struct mwl8k_priv *priv = hw->priv;
1350         struct mwl8k_tx_queue *txq = priv->txq + index;
1351         int processed;
1352
1353         processed = 0;
1354         while (txq->len > 0 && limit--) {
1355                 int tx;
1356                 struct mwl8k_tx_desc *tx_desc;
1357                 unsigned long addr;
1358                 int size;
1359                 struct sk_buff *skb;
1360                 struct ieee80211_tx_info *info;
1361                 u32 status;
1362
1363                 tx = txq->head;
1364                 tx_desc = txq->txd + tx;
1365
1366                 status = le32_to_cpu(tx_desc->status);
1367
1368                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1369                         if (!force)
1370                                 break;
1371                         tx_desc->status &=
1372                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1373                 }
1374
1375                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1376                 BUG_ON(txq->len == 0);
1377                 txq->len--;
1378                 priv->pending_tx_pkts--;
1379
1380                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1381                 size = le16_to_cpu(tx_desc->pkt_len);
1382                 skb = txq->skb[tx];
1383                 txq->skb[tx] = NULL;
1384
1385                 BUG_ON(skb == NULL);
1386                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1387
1388                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1389
1390                 /* Mark descriptor as unused */
1391                 tx_desc->pkt_phys_addr = 0;
1392                 tx_desc->pkt_len = 0;
1393
1394                 info = IEEE80211_SKB_CB(skb);
1395                 ieee80211_tx_info_clear_status(info);
1396                 if (MWL8K_TXD_SUCCESS(status))
1397                         info->flags |= IEEE80211_TX_STAT_ACK;
1398
1399                 ieee80211_tx_status_irqsafe(hw, skb);
1400
1401                 processed++;
1402         }
1403
1404         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1405                 ieee80211_wake_queue(hw, index);
1406
1407         return processed;
1408 }
1409
1410 /* must be called only when the card's transmit is completely halted */
1411 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1412 {
1413         struct mwl8k_priv *priv = hw->priv;
1414         struct mwl8k_tx_queue *txq = priv->txq + index;
1415
1416         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1417
1418         kfree(txq->skb);
1419         txq->skb = NULL;
1420
1421         pci_free_consistent(priv->pdev,
1422                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1423                             txq->txd, txq->txd_dma);
1424         txq->txd = NULL;
1425 }
1426
1427 static int
1428 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1429 {
1430         struct mwl8k_priv *priv = hw->priv;
1431         struct ieee80211_tx_info *tx_info;
1432         struct mwl8k_vif *mwl8k_vif;
1433         struct ieee80211_hdr *wh;
1434         struct mwl8k_tx_queue *txq;
1435         struct mwl8k_tx_desc *tx;
1436         dma_addr_t dma;
1437         u32 txstatus;
1438         u8 txdatarate;
1439         u16 qos;
1440
1441         wh = (struct ieee80211_hdr *)skb->data;
1442         if (ieee80211_is_data_qos(wh->frame_control))
1443                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1444         else
1445                 qos = 0;
1446
1447         mwl8k_add_dma_header(skb);
1448         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1449
1450         tx_info = IEEE80211_SKB_CB(skb);
1451         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1452
1453         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1454                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1455                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1456                 mwl8k_vif->seqno += 0x10;
1457         }
1458
1459         /* Setup firmware control bit fields for each frame type.  */
1460         txstatus = 0;
1461         txdatarate = 0;
1462         if (ieee80211_is_mgmt(wh->frame_control) ||
1463             ieee80211_is_ctl(wh->frame_control)) {
1464                 txdatarate = 0;
1465                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1466         } else if (ieee80211_is_data(wh->frame_control)) {
1467                 txdatarate = 1;
1468                 if (is_multicast_ether_addr(wh->addr1))
1469                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1470
1471                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1472                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1473                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1474                 else
1475                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1476         }
1477
1478         dma = pci_map_single(priv->pdev, skb->data,
1479                                 skb->len, PCI_DMA_TODEVICE);
1480
1481         if (pci_dma_mapping_error(priv->pdev, dma)) {
1482                 wiphy_debug(hw->wiphy,
1483                             "failed to dma map skb, dropping TX frame.\n");
1484                 dev_kfree_skb(skb);
1485                 return NETDEV_TX_OK;
1486         }
1487
1488         spin_lock_bh(&priv->tx_lock);
1489
1490         txq = priv->txq + index;
1491
1492         BUG_ON(txq->skb[txq->tail] != NULL);
1493         txq->skb[txq->tail] = skb;
1494
1495         tx = txq->txd + txq->tail;
1496         tx->data_rate = txdatarate;
1497         tx->tx_priority = index;
1498         tx->qos_control = cpu_to_le16(qos);
1499         tx->pkt_phys_addr = cpu_to_le32(dma);
1500         tx->pkt_len = cpu_to_le16(skb->len);
1501         tx->rate_info = 0;
1502         if (!priv->ap_fw && tx_info->control.sta != NULL)
1503                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1504         else
1505                 tx->peer_id = 0;
1506         wmb();
1507         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1508
1509         txq->len++;
1510         priv->pending_tx_pkts++;
1511
1512         txq->tail++;
1513         if (txq->tail == MWL8K_TX_DESCS)
1514                 txq->tail = 0;
1515
1516         if (txq->head == txq->tail)
1517                 ieee80211_stop_queue(hw, index);
1518
1519         mwl8k_tx_start(priv);
1520
1521         spin_unlock_bh(&priv->tx_lock);
1522
1523         return NETDEV_TX_OK;
1524 }
1525
1526
1527 /*
1528  * Firmware access.
1529  *
1530  * We have the following requirements for issuing firmware commands:
1531  * - Some commands require that the packet transmit path is idle when
1532  *   the command is issued.  (For simplicity, we'll just quiesce the
1533  *   transmit path for every command.)
1534  * - There are certain sequences of commands that need to be issued to
1535  *   the hardware sequentially, with no other intervening commands.
1536  *
1537  * This leads to an implementation of a "firmware lock" as a mutex that
1538  * can be taken recursively, and which is taken by both the low-level
1539  * command submission function (mwl8k_post_cmd) as well as any users of
1540  * that function that require issuing of an atomic sequence of commands,
1541  * and quiesces the transmit path whenever it's taken.
1542  */
1543 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1544 {
1545         struct mwl8k_priv *priv = hw->priv;
1546
1547         if (priv->fw_mutex_owner != current) {
1548                 int rc;
1549
1550                 mutex_lock(&priv->fw_mutex);
1551                 ieee80211_stop_queues(hw);
1552
1553                 rc = mwl8k_tx_wait_empty(hw);
1554                 if (rc) {
1555                         ieee80211_wake_queues(hw);
1556                         mutex_unlock(&priv->fw_mutex);
1557
1558                         return rc;
1559                 }
1560
1561                 priv->fw_mutex_owner = current;
1562         }
1563
1564         priv->fw_mutex_depth++;
1565
1566         return 0;
1567 }
1568
1569 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1570 {
1571         struct mwl8k_priv *priv = hw->priv;
1572
1573         if (!--priv->fw_mutex_depth) {
1574                 ieee80211_wake_queues(hw);
1575                 priv->fw_mutex_owner = NULL;
1576                 mutex_unlock(&priv->fw_mutex);
1577         }
1578 }
1579
1580
1581 /*
1582  * Command processing.
1583  */
1584
1585 /* Timeout firmware commands after 10s */
1586 #define MWL8K_CMD_TIMEOUT_MS    10000
1587
1588 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1589 {
1590         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1591         struct mwl8k_priv *priv = hw->priv;
1592         void __iomem *regs = priv->regs;
1593         dma_addr_t dma_addr;
1594         unsigned int dma_size;
1595         int rc;
1596         unsigned long timeout = 0;
1597         u8 buf[32];
1598
1599         cmd->result = (__force __le16) 0xffff;
1600         dma_size = le16_to_cpu(cmd->length);
1601         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1602                                   PCI_DMA_BIDIRECTIONAL);
1603         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1604                 return -ENOMEM;
1605
1606         rc = mwl8k_fw_lock(hw);
1607         if (rc) {
1608                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1609                                                 PCI_DMA_BIDIRECTIONAL);
1610                 return rc;
1611         }
1612
1613         priv->hostcmd_wait = &cmd_wait;
1614         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1615         iowrite32(MWL8K_H2A_INT_DOORBELL,
1616                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1617         iowrite32(MWL8K_H2A_INT_DUMMY,
1618                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1619
1620         timeout = wait_for_completion_timeout(&cmd_wait,
1621                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1622
1623         priv->hostcmd_wait = NULL;
1624
1625         mwl8k_fw_unlock(hw);
1626
1627         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1628                                         PCI_DMA_BIDIRECTIONAL);
1629
1630         if (!timeout) {
1631                 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1632                           mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1633                           MWL8K_CMD_TIMEOUT_MS);
1634                 rc = -ETIMEDOUT;
1635         } else {
1636                 int ms;
1637
1638                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1639
1640                 rc = cmd->result ? -EINVAL : 0;
1641                 if (rc)
1642                         wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1643                                   mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1644                                   le16_to_cpu(cmd->result));
1645                 else if (ms > 2000)
1646                         wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1647                                      mwl8k_cmd_name(cmd->code,
1648                                                     buf, sizeof(buf)),
1649                                      ms);
1650         }
1651
1652         return rc;
1653 }
1654
1655 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1656                                  struct ieee80211_vif *vif,
1657                                  struct mwl8k_cmd_pkt *cmd)
1658 {
1659         if (vif != NULL)
1660                 cmd->macid = MWL8K_VIF(vif)->macid;
1661         return mwl8k_post_cmd(hw, cmd);
1662 }
1663
1664 /*
1665  * Setup code shared between STA and AP firmware images.
1666  */
1667 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1668 {
1669         struct mwl8k_priv *priv = hw->priv;
1670
1671         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1672         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1673
1674         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1675         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1676
1677         priv->band_24.band = IEEE80211_BAND_2GHZ;
1678         priv->band_24.channels = priv->channels_24;
1679         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1680         priv->band_24.bitrates = priv->rates_24;
1681         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1682
1683         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1684 }
1685
1686 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1687 {
1688         struct mwl8k_priv *priv = hw->priv;
1689
1690         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1691         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1692
1693         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1694         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1695
1696         priv->band_50.band = IEEE80211_BAND_5GHZ;
1697         priv->band_50.channels = priv->channels_50;
1698         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1699         priv->band_50.bitrates = priv->rates_50;
1700         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1701
1702         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1703 }
1704
1705 /*
1706  * CMD_GET_HW_SPEC (STA version).
1707  */
1708 struct mwl8k_cmd_get_hw_spec_sta {
1709         struct mwl8k_cmd_pkt header;
1710         __u8 hw_rev;
1711         __u8 host_interface;
1712         __le16 num_mcaddrs;
1713         __u8 perm_addr[ETH_ALEN];
1714         __le16 region_code;
1715         __le32 fw_rev;
1716         __le32 ps_cookie;
1717         __le32 caps;
1718         __u8 mcs_bitmap[16];
1719         __le32 rx_queue_ptr;
1720         __le32 num_tx_queues;
1721         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1722         __le32 caps2;
1723         __le32 num_tx_desc_per_queue;
1724         __le32 total_rxd;
1725 } __packed;
1726
1727 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1728 #define MWL8K_CAP_GREENFIELD            0x08000000
1729 #define MWL8K_CAP_AMPDU                 0x04000000
1730 #define MWL8K_CAP_RX_STBC               0x01000000
1731 #define MWL8K_CAP_TX_STBC               0x00800000
1732 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1733 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1734 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1735 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1736 #define MWL8K_CAP_DELAY_BA              0x00003000
1737 #define MWL8K_CAP_MIMO                  0x00000200
1738 #define MWL8K_CAP_40MHZ                 0x00000100
1739 #define MWL8K_CAP_BAND_MASK             0x00000007
1740 #define MWL8K_CAP_5GHZ                  0x00000004
1741 #define MWL8K_CAP_2GHZ4                 0x00000001
1742
1743 static void
1744 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1745                   struct ieee80211_supported_band *band, u32 cap)
1746 {
1747         int rx_streams;
1748         int tx_streams;
1749
1750         band->ht_cap.ht_supported = 1;
1751
1752         if (cap & MWL8K_CAP_MAX_AMSDU)
1753                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1754         if (cap & MWL8K_CAP_GREENFIELD)
1755                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1756         if (cap & MWL8K_CAP_AMPDU) {
1757                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1758                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1759                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1760         }
1761         if (cap & MWL8K_CAP_RX_STBC)
1762                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1763         if (cap & MWL8K_CAP_TX_STBC)
1764                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1765         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1766                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1767         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1768                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1769         if (cap & MWL8K_CAP_DELAY_BA)
1770                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1771         if (cap & MWL8K_CAP_40MHZ)
1772                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1773
1774         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1775         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1776
1777         band->ht_cap.mcs.rx_mask[0] = 0xff;
1778         if (rx_streams >= 2)
1779                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1780         if (rx_streams >= 3)
1781                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1782         band->ht_cap.mcs.rx_mask[4] = 0x01;
1783         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1784
1785         if (rx_streams != tx_streams) {
1786                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1787                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1788                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1789         }
1790 }
1791
1792 static void
1793 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1794 {
1795         struct mwl8k_priv *priv = hw->priv;
1796
1797         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1798                 mwl8k_setup_2ghz_band(hw);
1799                 if (caps & MWL8K_CAP_MIMO)
1800                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1801         }
1802
1803         if (caps & MWL8K_CAP_5GHZ) {
1804                 mwl8k_setup_5ghz_band(hw);
1805                 if (caps & MWL8K_CAP_MIMO)
1806                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1807         }
1808 }
1809
1810 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1811 {
1812         struct mwl8k_priv *priv = hw->priv;
1813         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1814         int rc;
1815         int i;
1816
1817         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1818         if (cmd == NULL)
1819                 return -ENOMEM;
1820
1821         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1822         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1823
1824         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1825         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1826         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1827         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1828         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1829                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1830         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1831         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1832
1833         rc = mwl8k_post_cmd(hw, &cmd->header);
1834
1835         if (!rc) {
1836                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1837                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1838                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1839                 priv->hw_rev = cmd->hw_rev;
1840                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1841                 priv->ap_macids_supported = 0x00000000;
1842                 priv->sta_macids_supported = 0x00000001;
1843         }
1844
1845         kfree(cmd);
1846         return rc;
1847 }
1848
1849 /*
1850  * CMD_GET_HW_SPEC (AP version).
1851  */
1852 struct mwl8k_cmd_get_hw_spec_ap {
1853         struct mwl8k_cmd_pkt header;
1854         __u8 hw_rev;
1855         __u8 host_interface;
1856         __le16 num_wcb;
1857         __le16 num_mcaddrs;
1858         __u8 perm_addr[ETH_ALEN];
1859         __le16 region_code;
1860         __le16 num_antenna;
1861         __le32 fw_rev;
1862         __le32 wcbbase0;
1863         __le32 rxwrptr;
1864         __le32 rxrdptr;
1865         __le32 ps_cookie;
1866         __le32 wcbbase1;
1867         __le32 wcbbase2;
1868         __le32 wcbbase3;
1869         __le32 fw_api_version;
1870 } __packed;
1871
1872 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1873 {
1874         struct mwl8k_priv *priv = hw->priv;
1875         struct mwl8k_cmd_get_hw_spec_ap *cmd;
1876         int rc;
1877         u32 api_version;
1878
1879         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1880         if (cmd == NULL)
1881                 return -ENOMEM;
1882
1883         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1884         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1885
1886         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1887         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1888
1889         rc = mwl8k_post_cmd(hw, &cmd->header);
1890
1891         if (!rc) {
1892                 int off;
1893
1894                 api_version = le32_to_cpu(cmd->fw_api_version);
1895                 if (priv->device_info->fw_api_ap != api_version) {
1896                         printk(KERN_ERR "%s: Unsupported fw API version for %s."
1897                                "  Expected %d got %d.\n", MWL8K_NAME,
1898                                priv->device_info->part_name,
1899                                priv->device_info->fw_api_ap,
1900                                api_version);
1901                         rc = -EINVAL;
1902                         goto done;
1903                 }
1904                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1905                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1906                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1907                 priv->hw_rev = cmd->hw_rev;
1908                 mwl8k_setup_2ghz_band(hw);
1909                 priv->ap_macids_supported = 0x000000ff;
1910                 priv->sta_macids_supported = 0x00000000;
1911
1912                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1913                 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
1914
1915                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1916                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
1917
1918                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1919                 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
1920
1921                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1922                 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
1923
1924                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1925                 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
1926
1927                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1928                 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
1929         }
1930
1931 done:
1932         kfree(cmd);
1933         return rc;
1934 }
1935
1936 /*
1937  * CMD_SET_HW_SPEC.
1938  */
1939 struct mwl8k_cmd_set_hw_spec {
1940         struct mwl8k_cmd_pkt header;
1941         __u8 hw_rev;
1942         __u8 host_interface;
1943         __le16 num_mcaddrs;
1944         __u8 perm_addr[ETH_ALEN];
1945         __le16 region_code;
1946         __le32 fw_rev;
1947         __le32 ps_cookie;
1948         __le32 caps;
1949         __le32 rx_queue_ptr;
1950         __le32 num_tx_queues;
1951         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1952         __le32 flags;
1953         __le32 num_tx_desc_per_queue;
1954         __le32 total_rxd;
1955 } __packed;
1956
1957 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
1958 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
1959 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
1960
1961 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1962 {
1963         struct mwl8k_priv *priv = hw->priv;
1964         struct mwl8k_cmd_set_hw_spec *cmd;
1965         int rc;
1966         int i;
1967
1968         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1969         if (cmd == NULL)
1970                 return -ENOMEM;
1971
1972         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1973         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1974
1975         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1976         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1977         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1978         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1979                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1980         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
1981                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
1982                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
1983         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1984         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1985
1986         rc = mwl8k_post_cmd(hw, &cmd->header);
1987         kfree(cmd);
1988
1989         return rc;
1990 }
1991
1992 /*
1993  * CMD_MAC_MULTICAST_ADR.
1994  */
1995 struct mwl8k_cmd_mac_multicast_adr {
1996         struct mwl8k_cmd_pkt header;
1997         __le16 action;
1998         __le16 numaddr;
1999         __u8 addr[0][ETH_ALEN];
2000 };
2001
2002 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
2003 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
2004 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
2005 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
2006
2007 static struct mwl8k_cmd_pkt *
2008 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2009                               struct netdev_hw_addr_list *mc_list)
2010 {
2011         struct mwl8k_priv *priv = hw->priv;
2012         struct mwl8k_cmd_mac_multicast_adr *cmd;
2013         int size;
2014         int mc_count = 0;
2015
2016         if (mc_list)
2017                 mc_count = netdev_hw_addr_list_count(mc_list);
2018
2019         if (allmulti || mc_count > priv->num_mcaddrs) {
2020                 allmulti = 1;
2021                 mc_count = 0;
2022         }
2023
2024         size = sizeof(*cmd) + mc_count * ETH_ALEN;
2025
2026         cmd = kzalloc(size, GFP_ATOMIC);
2027         if (cmd == NULL)
2028                 return NULL;
2029
2030         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2031         cmd->header.length = cpu_to_le16(size);
2032         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2033                                   MWL8K_ENABLE_RX_BROADCAST);
2034
2035         if (allmulti) {
2036                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2037         } else if (mc_count) {
2038                 struct netdev_hw_addr *ha;
2039                 int i = 0;
2040
2041                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2042                 cmd->numaddr = cpu_to_le16(mc_count);
2043                 netdev_hw_addr_list_for_each(ha, mc_list) {
2044                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2045                 }
2046         }
2047
2048         return &cmd->header;
2049 }
2050
2051 /*
2052  * CMD_GET_STAT.
2053  */
2054 struct mwl8k_cmd_get_stat {
2055         struct mwl8k_cmd_pkt header;
2056         __le32 stats[64];
2057 } __packed;
2058
2059 #define MWL8K_STAT_ACK_FAILURE  9
2060 #define MWL8K_STAT_RTS_FAILURE  12
2061 #define MWL8K_STAT_FCS_ERROR    24
2062 #define MWL8K_STAT_RTS_SUCCESS  11
2063
2064 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2065                               struct ieee80211_low_level_stats *stats)
2066 {
2067         struct mwl8k_cmd_get_stat *cmd;
2068         int rc;
2069
2070         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2071         if (cmd == NULL)
2072                 return -ENOMEM;
2073
2074         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2075         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2076
2077         rc = mwl8k_post_cmd(hw, &cmd->header);
2078         if (!rc) {
2079                 stats->dot11ACKFailureCount =
2080                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2081                 stats->dot11RTSFailureCount =
2082                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2083                 stats->dot11FCSErrorCount =
2084                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2085                 stats->dot11RTSSuccessCount =
2086                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2087         }
2088         kfree(cmd);
2089
2090         return rc;
2091 }
2092
2093 /*
2094  * CMD_RADIO_CONTROL.
2095  */
2096 struct mwl8k_cmd_radio_control {
2097         struct mwl8k_cmd_pkt header;
2098         __le16 action;
2099         __le16 control;
2100         __le16 radio_on;
2101 } __packed;
2102
2103 static int
2104 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2105 {
2106         struct mwl8k_priv *priv = hw->priv;
2107         struct mwl8k_cmd_radio_control *cmd;
2108         int rc;
2109
2110         if (enable == priv->radio_on && !force)
2111                 return 0;
2112
2113         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2114         if (cmd == NULL)
2115                 return -ENOMEM;
2116
2117         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2118         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2119         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2120         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2121         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2122
2123         rc = mwl8k_post_cmd(hw, &cmd->header);
2124         kfree(cmd);
2125
2126         if (!rc)
2127                 priv->radio_on = enable;
2128
2129         return rc;
2130 }
2131
2132 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2133 {
2134         return mwl8k_cmd_radio_control(hw, 0, 0);
2135 }
2136
2137 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2138 {
2139         return mwl8k_cmd_radio_control(hw, 1, 0);
2140 }
2141
2142 static int
2143 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2144 {
2145         struct mwl8k_priv *priv = hw->priv;
2146
2147         priv->radio_short_preamble = short_preamble;
2148
2149         return mwl8k_cmd_radio_control(hw, 1, 1);
2150 }
2151
2152 /*
2153  * CMD_RF_TX_POWER.
2154  */
2155 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL   8
2156
2157 struct mwl8k_cmd_rf_tx_power {
2158         struct mwl8k_cmd_pkt header;
2159         __le16 action;
2160         __le16 support_level;
2161         __le16 current_level;
2162         __le16 reserved;
2163         __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2164 } __packed;
2165
2166 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2167 {
2168         struct mwl8k_cmd_rf_tx_power *cmd;
2169         int rc;
2170
2171         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2172         if (cmd == NULL)
2173                 return -ENOMEM;
2174
2175         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2176         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2177         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2178         cmd->support_level = cpu_to_le16(dBm);
2179
2180         rc = mwl8k_post_cmd(hw, &cmd->header);
2181         kfree(cmd);
2182
2183         return rc;
2184 }
2185
2186 /*
2187  * CMD_TX_POWER.
2188  */
2189 #define MWL8K_TX_POWER_LEVEL_TOTAL      12
2190
2191 struct mwl8k_cmd_tx_power {
2192         struct mwl8k_cmd_pkt header;
2193         __le16 action;
2194         __le16 band;
2195         __le16 channel;
2196         __le16 bw;
2197         __le16 sub_ch;
2198         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2199 } __attribute__((packed));
2200
2201 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2202                                      struct ieee80211_conf *conf,
2203                                      unsigned short pwr)
2204 {
2205         struct ieee80211_channel *channel = conf->channel;
2206         struct mwl8k_cmd_tx_power *cmd;
2207         int rc;
2208         int i;
2209
2210         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2211         if (cmd == NULL)
2212                 return -ENOMEM;
2213
2214         cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2215         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2216         cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2217
2218         if (channel->band == IEEE80211_BAND_2GHZ)
2219                 cmd->band = cpu_to_le16(0x1);
2220         else if (channel->band == IEEE80211_BAND_5GHZ)
2221                 cmd->band = cpu_to_le16(0x4);
2222
2223         cmd->channel = channel->hw_value;
2224
2225         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2226             conf->channel_type == NL80211_CHAN_HT20) {
2227                 cmd->bw = cpu_to_le16(0x2);
2228         } else {
2229                 cmd->bw = cpu_to_le16(0x4);
2230                 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2231                         cmd->sub_ch = cpu_to_le16(0x3);
2232                 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2233                         cmd->sub_ch = cpu_to_le16(0x1);
2234         }
2235
2236         for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2237                 cmd->power_level_list[i] = cpu_to_le16(pwr);
2238
2239         rc = mwl8k_post_cmd(hw, &cmd->header);
2240         kfree(cmd);
2241
2242         return rc;
2243 }
2244
2245 /*
2246  * CMD_RF_ANTENNA.
2247  */
2248 struct mwl8k_cmd_rf_antenna {
2249         struct mwl8k_cmd_pkt header;
2250         __le16 antenna;
2251         __le16 mode;
2252 } __packed;
2253
2254 #define MWL8K_RF_ANTENNA_RX             1
2255 #define MWL8K_RF_ANTENNA_TX             2
2256
2257 static int
2258 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2259 {
2260         struct mwl8k_cmd_rf_antenna *cmd;
2261         int rc;
2262
2263         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2264         if (cmd == NULL)
2265                 return -ENOMEM;
2266
2267         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2268         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2269         cmd->antenna = cpu_to_le16(antenna);
2270         cmd->mode = cpu_to_le16(mask);
2271
2272         rc = mwl8k_post_cmd(hw, &cmd->header);
2273         kfree(cmd);
2274
2275         return rc;
2276 }
2277
2278 /*
2279  * CMD_SET_BEACON.
2280  */
2281 struct mwl8k_cmd_set_beacon {
2282         struct mwl8k_cmd_pkt header;
2283         __le16 beacon_len;
2284         __u8 beacon[0];
2285 };
2286
2287 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2288                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2289 {
2290         struct mwl8k_cmd_set_beacon *cmd;
2291         int rc;
2292
2293         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2294         if (cmd == NULL)
2295                 return -ENOMEM;
2296
2297         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2298         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2299         cmd->beacon_len = cpu_to_le16(len);
2300         memcpy(cmd->beacon, beacon, len);
2301
2302         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2303         kfree(cmd);
2304
2305         return rc;
2306 }
2307
2308 /*
2309  * CMD_SET_PRE_SCAN.
2310  */
2311 struct mwl8k_cmd_set_pre_scan {
2312         struct mwl8k_cmd_pkt header;
2313 } __packed;
2314
2315 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2316 {
2317         struct mwl8k_cmd_set_pre_scan *cmd;
2318         int rc;
2319
2320         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2321         if (cmd == NULL)
2322                 return -ENOMEM;
2323
2324         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2325         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2326
2327         rc = mwl8k_post_cmd(hw, &cmd->header);
2328         kfree(cmd);
2329
2330         return rc;
2331 }
2332
2333 /*
2334  * CMD_SET_POST_SCAN.
2335  */
2336 struct mwl8k_cmd_set_post_scan {
2337         struct mwl8k_cmd_pkt header;
2338         __le32 isibss;
2339         __u8 bssid[ETH_ALEN];
2340 } __packed;
2341
2342 static int
2343 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2344 {
2345         struct mwl8k_cmd_set_post_scan *cmd;
2346         int rc;
2347
2348         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2349         if (cmd == NULL)
2350                 return -ENOMEM;
2351
2352         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2353         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2354         cmd->isibss = 0;
2355         memcpy(cmd->bssid, mac, ETH_ALEN);
2356
2357         rc = mwl8k_post_cmd(hw, &cmd->header);
2358         kfree(cmd);
2359
2360         return rc;
2361 }
2362
2363 /*
2364  * CMD_SET_RF_CHANNEL.
2365  */
2366 struct mwl8k_cmd_set_rf_channel {
2367         struct mwl8k_cmd_pkt header;
2368         __le16 action;
2369         __u8 current_channel;
2370         __le32 channel_flags;
2371 } __packed;
2372
2373 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2374                                     struct ieee80211_conf *conf)
2375 {
2376         struct ieee80211_channel *channel = conf->channel;
2377         struct mwl8k_cmd_set_rf_channel *cmd;
2378         int rc;
2379
2380         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2381         if (cmd == NULL)
2382                 return -ENOMEM;
2383
2384         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2385         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2386         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2387         cmd->current_channel = channel->hw_value;
2388
2389         if (channel->band == IEEE80211_BAND_2GHZ)
2390                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2391         else if (channel->band == IEEE80211_BAND_5GHZ)
2392                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2393
2394         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2395             conf->channel_type == NL80211_CHAN_HT20)
2396                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2397         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2398                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2399         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2400                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2401
2402         rc = mwl8k_post_cmd(hw, &cmd->header);
2403         kfree(cmd);
2404
2405         return rc;
2406 }
2407
2408 /*
2409  * CMD_SET_AID.
2410  */
2411 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2412 #define MWL8K_FRAME_PROT_11G                            0x07
2413 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2414 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2415
2416 struct mwl8k_cmd_update_set_aid {
2417         struct  mwl8k_cmd_pkt header;
2418         __le16  aid;
2419
2420          /* AP's MAC address (BSSID) */
2421         __u8    bssid[ETH_ALEN];
2422         __le16  protection_mode;
2423         __u8    supp_rates[14];
2424 } __packed;
2425
2426 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2427 {
2428         int i;
2429         int j;
2430
2431         /*
2432          * Clear nonstandard rates 4 and 13.
2433          */
2434         mask &= 0x1fef;
2435
2436         for (i = 0, j = 0; i < 14; i++) {
2437                 if (mask & (1 << i))
2438                         rates[j++] = mwl8k_rates_24[i].hw_value;
2439         }
2440 }
2441
2442 static int
2443 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2444                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2445 {
2446         struct mwl8k_cmd_update_set_aid *cmd;
2447         u16 prot_mode;
2448         int rc;
2449
2450         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2451         if (cmd == NULL)
2452                 return -ENOMEM;
2453
2454         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2455         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2456         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2457         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2458
2459         if (vif->bss_conf.use_cts_prot) {
2460                 prot_mode = MWL8K_FRAME_PROT_11G;
2461         } else {
2462                 switch (vif->bss_conf.ht_operation_mode &
2463                         IEEE80211_HT_OP_MODE_PROTECTION) {
2464                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2465                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2466                         break;
2467                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2468                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2469                         break;
2470                 default:
2471                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2472                         break;
2473                 }
2474         }
2475         cmd->protection_mode = cpu_to_le16(prot_mode);
2476
2477         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2478
2479         rc = mwl8k_post_cmd(hw, &cmd->header);
2480         kfree(cmd);
2481
2482         return rc;
2483 }
2484
2485 /*
2486  * CMD_SET_RATE.
2487  */
2488 struct mwl8k_cmd_set_rate {
2489         struct  mwl8k_cmd_pkt header;
2490         __u8    legacy_rates[14];
2491
2492         /* Bitmap for supported MCS codes.  */
2493         __u8    mcs_set[16];
2494         __u8    reserved[16];
2495 } __packed;
2496
2497 static int
2498 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2499                    u32 legacy_rate_mask, u8 *mcs_rates)
2500 {
2501         struct mwl8k_cmd_set_rate *cmd;
2502         int rc;
2503
2504         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2505         if (cmd == NULL)
2506                 return -ENOMEM;
2507
2508         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2509         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2510         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2511         memcpy(cmd->mcs_set, mcs_rates, 16);
2512
2513         rc = mwl8k_post_cmd(hw, &cmd->header);
2514         kfree(cmd);
2515
2516         return rc;
2517 }
2518
2519 /*
2520  * CMD_FINALIZE_JOIN.
2521  */
2522 #define MWL8K_FJ_BEACON_MAXLEN  128
2523
2524 struct mwl8k_cmd_finalize_join {
2525         struct mwl8k_cmd_pkt header;
2526         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2527         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2528 } __packed;
2529
2530 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2531                                    int framelen, int dtim)
2532 {
2533         struct mwl8k_cmd_finalize_join *cmd;
2534         struct ieee80211_mgmt *payload = frame;
2535         int payload_len;
2536         int rc;
2537
2538         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2539         if (cmd == NULL)
2540                 return -ENOMEM;
2541
2542         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2543         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2544         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2545
2546         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2547         if (payload_len < 0)
2548                 payload_len = 0;
2549         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2550                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2551
2552         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2553
2554         rc = mwl8k_post_cmd(hw, &cmd->header);
2555         kfree(cmd);
2556
2557         return rc;
2558 }
2559
2560 /*
2561  * CMD_SET_RTS_THRESHOLD.
2562  */
2563 struct mwl8k_cmd_set_rts_threshold {
2564         struct mwl8k_cmd_pkt header;
2565         __le16 action;
2566         __le16 threshold;
2567 } __packed;
2568
2569 static int
2570 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2571 {
2572         struct mwl8k_cmd_set_rts_threshold *cmd;
2573         int rc;
2574
2575         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2576         if (cmd == NULL)
2577                 return -ENOMEM;
2578
2579         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2580         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2581         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2582         cmd->threshold = cpu_to_le16(rts_thresh);
2583
2584         rc = mwl8k_post_cmd(hw, &cmd->header);
2585         kfree(cmd);
2586
2587         return rc;
2588 }
2589
2590 /*
2591  * CMD_SET_SLOT.
2592  */
2593 struct mwl8k_cmd_set_slot {
2594         struct mwl8k_cmd_pkt header;
2595         __le16 action;
2596         __u8 short_slot;
2597 } __packed;
2598
2599 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2600 {
2601         struct mwl8k_cmd_set_slot *cmd;
2602         int rc;
2603
2604         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2605         if (cmd == NULL)
2606                 return -ENOMEM;
2607
2608         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2609         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2610         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2611         cmd->short_slot = short_slot_time;
2612
2613         rc = mwl8k_post_cmd(hw, &cmd->header);
2614         kfree(cmd);
2615
2616         return rc;
2617 }
2618
2619 /*
2620  * CMD_SET_EDCA_PARAMS.
2621  */
2622 struct mwl8k_cmd_set_edca_params {
2623         struct mwl8k_cmd_pkt header;
2624
2625         /* See MWL8K_SET_EDCA_XXX below */
2626         __le16 action;
2627
2628         /* TX opportunity in units of 32 us */
2629         __le16 txop;
2630
2631         union {
2632                 struct {
2633                         /* Log exponent of max contention period: 0...15 */
2634                         __le32 log_cw_max;
2635
2636                         /* Log exponent of min contention period: 0...15 */
2637                         __le32 log_cw_min;
2638
2639                         /* Adaptive interframe spacing in units of 32us */
2640                         __u8 aifs;
2641
2642                         /* TX queue to configure */
2643                         __u8 txq;
2644                 } ap;
2645                 struct {
2646                         /* Log exponent of max contention period: 0...15 */
2647                         __u8 log_cw_max;
2648
2649                         /* Log exponent of min contention period: 0...15 */
2650                         __u8 log_cw_min;
2651
2652                         /* Adaptive interframe spacing in units of 32us */
2653                         __u8 aifs;
2654
2655                         /* TX queue to configure */
2656                         __u8 txq;
2657                 } sta;
2658         };
2659 } __packed;
2660
2661 #define MWL8K_SET_EDCA_CW       0x01
2662 #define MWL8K_SET_EDCA_TXOP     0x02
2663 #define MWL8K_SET_EDCA_AIFS     0x04
2664
2665 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2666                                  MWL8K_SET_EDCA_TXOP | \
2667                                  MWL8K_SET_EDCA_AIFS)
2668
2669 static int
2670 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2671                           __u16 cw_min, __u16 cw_max,
2672                           __u8 aifs, __u16 txop)
2673 {
2674         struct mwl8k_priv *priv = hw->priv;
2675         struct mwl8k_cmd_set_edca_params *cmd;
2676         int rc;
2677
2678         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2679         if (cmd == NULL)
2680                 return -ENOMEM;
2681
2682         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2683         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2684         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2685         cmd->txop = cpu_to_le16(txop);
2686         if (priv->ap_fw) {
2687                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2688                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2689                 cmd->ap.aifs = aifs;
2690                 cmd->ap.txq = qnum;
2691         } else {
2692                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2693                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2694                 cmd->sta.aifs = aifs;
2695                 cmd->sta.txq = qnum;
2696         }
2697
2698         rc = mwl8k_post_cmd(hw, &cmd->header);
2699         kfree(cmd);
2700
2701         return rc;
2702 }
2703
2704 /*
2705  * CMD_SET_WMM_MODE.
2706  */
2707 struct mwl8k_cmd_set_wmm_mode {
2708         struct mwl8k_cmd_pkt header;
2709         __le16 action;
2710 } __packed;
2711
2712 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2713 {
2714         struct mwl8k_priv *priv = hw->priv;
2715         struct mwl8k_cmd_set_wmm_mode *cmd;
2716         int rc;
2717
2718         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2719         if (cmd == NULL)
2720                 return -ENOMEM;
2721
2722         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2723         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2724         cmd->action = cpu_to_le16(!!enable);
2725
2726         rc = mwl8k_post_cmd(hw, &cmd->header);
2727         kfree(cmd);
2728
2729         if (!rc)
2730                 priv->wmm_enabled = enable;
2731
2732         return rc;
2733 }
2734
2735 /*
2736  * CMD_MIMO_CONFIG.
2737  */
2738 struct mwl8k_cmd_mimo_config {
2739         struct mwl8k_cmd_pkt header;
2740         __le32 action;
2741         __u8 rx_antenna_map;
2742         __u8 tx_antenna_map;
2743 } __packed;
2744
2745 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2746 {
2747         struct mwl8k_cmd_mimo_config *cmd;
2748         int rc;
2749
2750         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2751         if (cmd == NULL)
2752                 return -ENOMEM;
2753
2754         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2755         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2756         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2757         cmd->rx_antenna_map = rx;
2758         cmd->tx_antenna_map = tx;
2759
2760         rc = mwl8k_post_cmd(hw, &cmd->header);
2761         kfree(cmd);
2762
2763         return rc;
2764 }
2765
2766 /*
2767  * CMD_USE_FIXED_RATE (STA version).
2768  */
2769 struct mwl8k_cmd_use_fixed_rate_sta {
2770         struct mwl8k_cmd_pkt header;
2771         __le32 action;
2772         __le32 allow_rate_drop;
2773         __le32 num_rates;
2774         struct {
2775                 __le32 is_ht_rate;
2776                 __le32 enable_retry;
2777                 __le32 rate;
2778                 __le32 retry_count;
2779         } rate_entry[8];
2780         __le32 rate_type;
2781         __le32 reserved1;
2782         __le32 reserved2;
2783 } __packed;
2784
2785 #define MWL8K_USE_AUTO_RATE     0x0002
2786 #define MWL8K_UCAST_RATE        0
2787
2788 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2789 {
2790         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2791         int rc;
2792
2793         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2794         if (cmd == NULL)
2795                 return -ENOMEM;
2796
2797         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2798         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2799         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2800         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2801
2802         rc = mwl8k_post_cmd(hw, &cmd->header);
2803         kfree(cmd);
2804
2805         return rc;
2806 }
2807
2808 /*
2809  * CMD_USE_FIXED_RATE (AP version).
2810  */
2811 struct mwl8k_cmd_use_fixed_rate_ap {
2812         struct mwl8k_cmd_pkt header;
2813         __le32 action;
2814         __le32 allow_rate_drop;
2815         __le32 num_rates;
2816         struct mwl8k_rate_entry_ap {
2817                 __le32 is_ht_rate;
2818                 __le32 enable_retry;
2819                 __le32 rate;
2820                 __le32 retry_count;
2821         } rate_entry[4];
2822         u8 multicast_rate;
2823         u8 multicast_rate_type;
2824         u8 management_rate;
2825 } __packed;
2826
2827 static int
2828 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2829 {
2830         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2831         int rc;
2832
2833         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2834         if (cmd == NULL)
2835                 return -ENOMEM;
2836
2837         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2838         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2839         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2840         cmd->multicast_rate = mcast;
2841         cmd->management_rate = mgmt;
2842
2843         rc = mwl8k_post_cmd(hw, &cmd->header);
2844         kfree(cmd);
2845
2846         return rc;
2847 }
2848
2849 /*
2850  * CMD_ENABLE_SNIFFER.
2851  */
2852 struct mwl8k_cmd_enable_sniffer {
2853         struct mwl8k_cmd_pkt header;
2854         __le32 action;
2855 } __packed;
2856
2857 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2858 {
2859         struct mwl8k_cmd_enable_sniffer *cmd;
2860         int rc;
2861
2862         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2863         if (cmd == NULL)
2864                 return -ENOMEM;
2865
2866         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2867         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2868         cmd->action = cpu_to_le32(!!enable);
2869
2870         rc = mwl8k_post_cmd(hw, &cmd->header);
2871         kfree(cmd);
2872
2873         return rc;
2874 }
2875
2876 /*
2877  * CMD_SET_MAC_ADDR.
2878  */
2879 struct mwl8k_cmd_set_mac_addr {
2880         struct mwl8k_cmd_pkt header;
2881         union {
2882                 struct {
2883                         __le16 mac_type;
2884                         __u8 mac_addr[ETH_ALEN];
2885                 } mbss;
2886                 __u8 mac_addr[ETH_ALEN];
2887         };
2888 } __packed;
2889
2890 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
2891 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
2892 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
2893 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
2894
2895 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
2896                                   struct ieee80211_vif *vif, u8 *mac)
2897 {
2898         struct mwl8k_priv *priv = hw->priv;
2899         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2900         struct mwl8k_cmd_set_mac_addr *cmd;
2901         int mac_type;
2902         int rc;
2903
2904         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2905         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
2906                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
2907                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
2908                 else
2909                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
2910         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
2911                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
2912                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2913                 else
2914                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
2915         }
2916
2917         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2918         if (cmd == NULL)
2919                 return -ENOMEM;
2920
2921         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2922         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2923         if (priv->ap_fw) {
2924                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
2925                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2926         } else {
2927                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2928         }
2929
2930         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2931         kfree(cmd);
2932
2933         return rc;
2934 }
2935
2936 /*
2937  * CMD_SET_RATEADAPT_MODE.
2938  */
2939 struct mwl8k_cmd_set_rate_adapt_mode {
2940         struct mwl8k_cmd_pkt header;
2941         __le16 action;
2942         __le16 mode;
2943 } __packed;
2944
2945 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2946 {
2947         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2948         int rc;
2949
2950         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2951         if (cmd == NULL)
2952                 return -ENOMEM;
2953
2954         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2955         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2956         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2957         cmd->mode = cpu_to_le16(mode);
2958
2959         rc = mwl8k_post_cmd(hw, &cmd->header);
2960         kfree(cmd);
2961
2962         return rc;
2963 }
2964
2965 /*
2966  * CMD_BSS_START.
2967  */
2968 struct mwl8k_cmd_bss_start {
2969         struct mwl8k_cmd_pkt header;
2970         __le32 enable;
2971 } __packed;
2972
2973 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
2974                                struct ieee80211_vif *vif, int enable)
2975 {
2976         struct mwl8k_cmd_bss_start *cmd;
2977         int rc;
2978
2979         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2980         if (cmd == NULL)
2981                 return -ENOMEM;
2982
2983         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
2984         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2985         cmd->enable = cpu_to_le32(enable);
2986
2987         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2988         kfree(cmd);
2989
2990         return rc;
2991 }
2992
2993 /*
2994  * CMD_SET_NEW_STN.
2995  */
2996 struct mwl8k_cmd_set_new_stn {
2997         struct mwl8k_cmd_pkt header;
2998         __le16 aid;
2999         __u8 mac_addr[6];
3000         __le16 stn_id;
3001         __le16 action;
3002         __le16 rsvd;
3003         __le32 legacy_rates;
3004         __u8 ht_rates[4];
3005         __le16 cap_info;
3006         __le16 ht_capabilities_info;
3007         __u8 mac_ht_param_info;
3008         __u8 rev;
3009         __u8 control_channel;
3010         __u8 add_channel;
3011         __le16 op_mode;
3012         __le16 stbc;
3013         __u8 add_qos_info;
3014         __u8 is_qos_sta;
3015         __le32 fw_sta_ptr;
3016 } __packed;
3017
3018 #define MWL8K_STA_ACTION_ADD            0
3019 #define MWL8K_STA_ACTION_REMOVE         2
3020
3021 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3022                                      struct ieee80211_vif *vif,
3023                                      struct ieee80211_sta *sta)
3024 {
3025         struct mwl8k_cmd_set_new_stn *cmd;
3026         u32 rates;
3027         int rc;
3028
3029         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3030         if (cmd == NULL)
3031                 return -ENOMEM;
3032
3033         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3034         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3035         cmd->aid = cpu_to_le16(sta->aid);
3036         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3037         cmd->stn_id = cpu_to_le16(sta->aid);
3038         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3039         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3040                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3041         else
3042                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3043         cmd->legacy_rates = cpu_to_le32(rates);
3044         if (sta->ht_cap.ht_supported) {
3045                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3046                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3047                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3048                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3049                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3050                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3051                         ((sta->ht_cap.ampdu_density & 7) << 2);
3052                 cmd->is_qos_sta = 1;
3053         }
3054
3055         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3056         kfree(cmd);
3057
3058         return rc;
3059 }
3060
3061 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3062                                           struct ieee80211_vif *vif)
3063 {
3064         struct mwl8k_cmd_set_new_stn *cmd;
3065         int rc;
3066
3067         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3068         if (cmd == NULL)
3069                 return -ENOMEM;
3070
3071         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3072         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3073         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3074
3075         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3076         kfree(cmd);
3077
3078         return rc;
3079 }
3080
3081 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3082                                      struct ieee80211_vif *vif, u8 *addr)
3083 {
3084         struct mwl8k_cmd_set_new_stn *cmd;
3085         int rc;
3086
3087         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3088         if (cmd == NULL)
3089                 return -ENOMEM;
3090
3091         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3092         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3093         memcpy(cmd->mac_addr, addr, ETH_ALEN);
3094         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3095
3096         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3097         kfree(cmd);
3098
3099         return rc;
3100 }
3101
3102 /*
3103  * CMD_UPDATE_STADB.
3104  */
3105 struct ewc_ht_info {
3106         __le16  control1;
3107         __le16  control2;
3108         __le16  control3;
3109 } __packed;
3110
3111 struct peer_capability_info {
3112         /* Peer type - AP vs. STA.  */
3113         __u8    peer_type;
3114
3115         /* Basic 802.11 capabilities from assoc resp.  */
3116         __le16  basic_caps;
3117
3118         /* Set if peer supports 802.11n high throughput (HT).  */
3119         __u8    ht_support;
3120
3121         /* Valid if HT is supported.  */
3122         __le16  ht_caps;
3123         __u8    extended_ht_caps;
3124         struct ewc_ht_info      ewc_info;
3125
3126         /* Legacy rate table. Intersection of our rates and peer rates.  */
3127         __u8    legacy_rates[12];
3128
3129         /* HT rate table. Intersection of our rates and peer rates.  */
3130         __u8    ht_rates[16];
3131         __u8    pad[16];
3132
3133         /* If set, interoperability mode, no proprietary extensions.  */
3134         __u8    interop;
3135         __u8    pad2;
3136         __u8    station_id;
3137         __le16  amsdu_enabled;
3138 } __packed;
3139
3140 struct mwl8k_cmd_update_stadb {
3141         struct mwl8k_cmd_pkt header;
3142
3143         /* See STADB_ACTION_TYPE */
3144         __le32  action;
3145
3146         /* Peer MAC address */
3147         __u8    peer_addr[ETH_ALEN];
3148
3149         __le32  reserved;
3150
3151         /* Peer info - valid during add/update.  */
3152         struct peer_capability_info     peer_info;
3153 } __packed;
3154
3155 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3156 #define MWL8K_STA_DB_DEL_ENTRY          2
3157
3158 /* Peer Entry flags - used to define the type of the peer node */
3159 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3160
3161 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3162                                       struct ieee80211_vif *vif,
3163                                       struct ieee80211_sta *sta)
3164 {
3165         struct mwl8k_cmd_update_stadb *cmd;
3166         struct peer_capability_info *p;
3167         u32 rates;
3168         int rc;
3169
3170         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3171         if (cmd == NULL)
3172                 return -ENOMEM;
3173
3174         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3175         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3176         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3177         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3178
3179         p = &cmd->peer_info;
3180         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3181         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3182         p->ht_support = sta->ht_cap.ht_supported;
3183         p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3184         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3185                 ((sta->ht_cap.ampdu_density & 7) << 2);
3186         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3187                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3188         else
3189                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3190         legacy_rate_mask_to_array(p->legacy_rates, rates);
3191         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3192         p->interop = 1;
3193         p->amsdu_enabled = 0;
3194
3195         rc = mwl8k_post_cmd(hw, &cmd->header);
3196         kfree(cmd);
3197
3198         return rc ? rc : p->station_id;
3199 }
3200
3201 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3202                                       struct ieee80211_vif *vif, u8 *addr)
3203 {
3204         struct mwl8k_cmd_update_stadb *cmd;
3205         int rc;
3206
3207         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3208         if (cmd == NULL)
3209                 return -ENOMEM;
3210
3211         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3212         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3213         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3214         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3215
3216         rc = mwl8k_post_cmd(hw, &cmd->header);
3217         kfree(cmd);
3218
3219         return rc;
3220 }
3221
3222
3223 /*
3224  * Interrupt handling.
3225  */
3226 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3227 {
3228         struct ieee80211_hw *hw = dev_id;
3229         struct mwl8k_priv *priv = hw->priv;
3230         u32 status;
3231
3232         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3233         if (!status)
3234                 return IRQ_NONE;
3235
3236         if (status & MWL8K_A2H_INT_TX_DONE) {
3237                 status &= ~MWL8K_A2H_INT_TX_DONE;
3238                 tasklet_schedule(&priv->poll_tx_task);
3239         }
3240
3241         if (status & MWL8K_A2H_INT_RX_READY) {
3242                 status &= ~MWL8K_A2H_INT_RX_READY;
3243                 tasklet_schedule(&priv->poll_rx_task);
3244         }
3245
3246         if (status)
3247                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3248
3249         if (status & MWL8K_A2H_INT_OPC_DONE) {
3250                 if (priv->hostcmd_wait != NULL)
3251                         complete(priv->hostcmd_wait);
3252         }
3253
3254         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3255                 if (!mutex_is_locked(&priv->fw_mutex) &&
3256                     priv->radio_on && priv->pending_tx_pkts)
3257                         mwl8k_tx_start(priv);
3258         }
3259
3260         return IRQ_HANDLED;
3261 }
3262
3263 static void mwl8k_tx_poll(unsigned long data)
3264 {
3265         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3266         struct mwl8k_priv *priv = hw->priv;
3267         int limit;
3268         int i;
3269
3270         limit = 32;
3271
3272         spin_lock_bh(&priv->tx_lock);
3273
3274         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3275                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3276
3277         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3278                 complete(priv->tx_wait);
3279                 priv->tx_wait = NULL;
3280         }
3281
3282         spin_unlock_bh(&priv->tx_lock);
3283
3284         if (limit) {
3285                 writel(~MWL8K_A2H_INT_TX_DONE,
3286                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3287         } else {
3288                 tasklet_schedule(&priv->poll_tx_task);
3289         }
3290 }
3291
3292 static void mwl8k_rx_poll(unsigned long data)
3293 {
3294         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3295         struct mwl8k_priv *priv = hw->priv;
3296         int limit;
3297
3298         limit = 32;
3299         limit -= rxq_process(hw, 0, limit);
3300         limit -= rxq_refill(hw, 0, limit);
3301
3302         if (limit) {
3303                 writel(~MWL8K_A2H_INT_RX_READY,
3304                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3305         } else {
3306                 tasklet_schedule(&priv->poll_rx_task);
3307         }
3308 }
3309
3310
3311 /*
3312  * Core driver operations.
3313  */
3314 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3315 {
3316         struct mwl8k_priv *priv = hw->priv;
3317         int index = skb_get_queue_mapping(skb);
3318         int rc;
3319
3320         if (!priv->radio_on) {
3321                 wiphy_debug(hw->wiphy,
3322                             "dropped TX frame since radio disabled\n");
3323                 dev_kfree_skb(skb);
3324                 return NETDEV_TX_OK;
3325         }
3326
3327         rc = mwl8k_txq_xmit(hw, index, skb);
3328
3329         return rc;
3330 }
3331
3332 static int mwl8k_start(struct ieee80211_hw *hw)
3333 {
3334         struct mwl8k_priv *priv = hw->priv;
3335         int rc;
3336
3337         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3338                          IRQF_SHARED, MWL8K_NAME, hw);
3339         if (rc) {
3340                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3341                 return -EIO;
3342         }
3343
3344         /* Enable TX reclaim and RX tasklets.  */
3345         tasklet_enable(&priv->poll_tx_task);
3346         tasklet_enable(&priv->poll_rx_task);
3347
3348         /* Enable interrupts */
3349         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3350
3351         rc = mwl8k_fw_lock(hw);
3352         if (!rc) {
3353                 rc = mwl8k_cmd_radio_enable(hw);
3354
3355                 if (!priv->ap_fw) {
3356                         if (!rc)
3357                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3358
3359                         if (!rc)
3360                                 rc = mwl8k_cmd_set_pre_scan(hw);
3361
3362                         if (!rc)
3363                                 rc = mwl8k_cmd_set_post_scan(hw,
3364                                                 "\x00\x00\x00\x00\x00\x00");
3365                 }
3366
3367                 if (!rc)
3368                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3369
3370                 if (!rc)
3371                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3372
3373                 mwl8k_fw_unlock(hw);
3374         }
3375
3376         if (rc) {
3377                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3378                 free_irq(priv->pdev->irq, hw);
3379                 tasklet_disable(&priv->poll_tx_task);
3380                 tasklet_disable(&priv->poll_rx_task);
3381         }
3382
3383         return rc;
3384 }
3385
3386 static void mwl8k_stop(struct ieee80211_hw *hw)
3387 {
3388         struct mwl8k_priv *priv = hw->priv;
3389         int i;
3390
3391         mwl8k_cmd_radio_disable(hw);
3392
3393         ieee80211_stop_queues(hw);
3394
3395         /* Disable interrupts */
3396         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3397         free_irq(priv->pdev->irq, hw);
3398
3399         /* Stop finalize join worker */
3400         cancel_work_sync(&priv->finalize_join_worker);
3401         if (priv->beacon_skb != NULL)
3402                 dev_kfree_skb(priv->beacon_skb);
3403
3404         /* Stop TX reclaim and RX tasklets.  */
3405         tasklet_disable(&priv->poll_tx_task);
3406         tasklet_disable(&priv->poll_rx_task);
3407
3408         /* Return all skbs to mac80211 */
3409         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3410                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3411 }
3412
3413 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3414
3415 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3416                                struct ieee80211_vif *vif)
3417 {
3418         struct mwl8k_priv *priv = hw->priv;
3419         struct mwl8k_vif *mwl8k_vif;
3420         u32 macids_supported;
3421         int macid, rc;
3422         struct mwl8k_device_info *di;
3423
3424         /*
3425          * Reject interface creation if sniffer mode is active, as
3426          * STA operation is mutually exclusive with hardware sniffer
3427          * mode.  (Sniffer mode is only used on STA firmware.)
3428          */
3429         if (priv->sniffer_enabled) {
3430                 wiphy_info(hw->wiphy,
3431                            "unable to create STA interface because sniffer mode is enabled\n");
3432                 return -EINVAL;
3433         }
3434
3435         di = priv->device_info;
3436         switch (vif->type) {
3437         case NL80211_IFTYPE_AP:
3438                 if (!priv->ap_fw && di->fw_image_ap) {
3439                         /* we must load the ap fw to meet this request */
3440                         if (!list_empty(&priv->vif_list))
3441                                 return -EBUSY;
3442                         rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3443                         if (rc)
3444                                 return rc;
3445                 }
3446                 macids_supported = priv->ap_macids_supported;
3447                 break;
3448         case NL80211_IFTYPE_STATION:
3449                 if (priv->ap_fw && di->fw_image_sta) {
3450                         /* we must load the sta fw to meet this request */
3451                         if (!list_empty(&priv->vif_list))
3452                                 return -EBUSY;
3453                         rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3454                         if (rc)
3455                                 return rc;
3456                 }
3457                 macids_supported = priv->sta_macids_supported;
3458                 break;
3459         default:
3460                 return -EINVAL;
3461         }
3462
3463         macid = ffs(macids_supported & ~priv->macids_used);
3464         if (!macid--)
3465                 return -EBUSY;
3466
3467         /* Setup driver private area. */
3468         mwl8k_vif = MWL8K_VIF(vif);
3469         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3470         mwl8k_vif->vif = vif;
3471         mwl8k_vif->macid = macid;
3472         mwl8k_vif->seqno = 0;
3473
3474         /* Set the mac address.  */
3475         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3476
3477         if (priv->ap_fw)
3478                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3479
3480         priv->macids_used |= 1 << mwl8k_vif->macid;
3481         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3482
3483         return 0;
3484 }
3485
3486 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3487                                    struct ieee80211_vif *vif)
3488 {
3489         struct mwl8k_priv *priv = hw->priv;
3490         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3491
3492         if (priv->ap_fw)
3493                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3494
3495         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3496
3497         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3498         list_del(&mwl8k_vif->list);
3499 }
3500
3501 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3502 {
3503         struct ieee80211_conf *conf = &hw->conf;
3504         struct mwl8k_priv *priv = hw->priv;
3505         int rc;
3506
3507         if (conf->flags & IEEE80211_CONF_IDLE) {
3508                 mwl8k_cmd_radio_disable(hw);
3509                 return 0;
3510         }
3511
3512         rc = mwl8k_fw_lock(hw);
3513         if (rc)
3514                 return rc;
3515
3516         rc = mwl8k_cmd_radio_enable(hw);
3517         if (rc)
3518                 goto out;
3519
3520         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3521         if (rc)
3522                 goto out;
3523
3524         if (conf->power_level > 18)
3525                 conf->power_level = 18;
3526
3527         if (priv->ap_fw) {
3528                 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3529                 if (rc)
3530                         goto out;
3531
3532                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3533                 if (!rc)
3534                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3535         } else {
3536                 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3537                 if (rc)
3538                         goto out;
3539                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3540         }
3541
3542 out:
3543         mwl8k_fw_unlock(hw);
3544
3545         return rc;
3546 }
3547
3548 static void
3549 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3550                            struct ieee80211_bss_conf *info, u32 changed)
3551 {
3552         struct mwl8k_priv *priv = hw->priv;
3553         u32 ap_legacy_rates;
3554         u8 ap_mcs_rates[16];
3555         int rc;
3556
3557         if (mwl8k_fw_lock(hw))
3558                 return;
3559
3560         /*
3561          * No need to capture a beacon if we're no longer associated.
3562          */
3563         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3564                 priv->capture_beacon = false;
3565
3566         /*
3567          * Get the AP's legacy and MCS rates.
3568          */
3569         if (vif->bss_conf.assoc) {
3570                 struct ieee80211_sta *ap;
3571
3572                 rcu_read_lock();
3573
3574                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3575                 if (ap == NULL) {
3576                         rcu_read_unlock();
3577                         goto out;
3578                 }
3579
3580                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3581                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3582                 } else {
3583                         ap_legacy_rates =
3584                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3585                 }
3586                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3587
3588                 rcu_read_unlock();
3589         }
3590
3591         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3592                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3593                 if (rc)
3594                         goto out;
3595
3596                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
3597                 if (rc)
3598                         goto out;
3599         }
3600
3601         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3602                 rc = mwl8k_set_radio_preamble(hw,
3603                                 vif->bss_conf.use_short_preamble);
3604                 if (rc)
3605                         goto out;
3606         }
3607
3608         if (changed & BSS_CHANGED_ERP_SLOT) {
3609                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3610                 if (rc)
3611                         goto out;
3612         }
3613
3614         if (vif->bss_conf.assoc &&
3615             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
3616                         BSS_CHANGED_HT))) {
3617                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3618                 if (rc)
3619                         goto out;
3620         }
3621
3622         if (vif->bss_conf.assoc &&
3623             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3624                 /*
3625                  * Finalize the join.  Tell rx handler to process
3626                  * next beacon from our BSSID.
3627                  */
3628                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3629                 priv->capture_beacon = true;
3630         }
3631
3632 out:
3633         mwl8k_fw_unlock(hw);
3634 }
3635
3636 static void
3637 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3638                           struct ieee80211_bss_conf *info, u32 changed)
3639 {
3640         int rc;
3641
3642         if (mwl8k_fw_lock(hw))
3643                 return;
3644
3645         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3646                 rc = mwl8k_set_radio_preamble(hw,
3647                                 vif->bss_conf.use_short_preamble);
3648                 if (rc)
3649                         goto out;
3650         }
3651
3652         if (changed & BSS_CHANGED_BASIC_RATES) {
3653                 int idx;
3654                 int rate;
3655
3656                 /*
3657                  * Use lowest supported basic rate for multicasts
3658                  * and management frames (such as probe responses --
3659                  * beacons will always go out at 1 Mb/s).
3660                  */
3661                 idx = ffs(vif->bss_conf.basic_rates);
3662                 if (idx)
3663                         idx--;
3664
3665                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3666                         rate = mwl8k_rates_24[idx].hw_value;
3667                 else
3668                         rate = mwl8k_rates_50[idx].hw_value;
3669
3670                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
3671         }
3672
3673         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
3674                 struct sk_buff *skb;
3675
3676                 skb = ieee80211_beacon_get(hw, vif);
3677                 if (skb != NULL) {
3678                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
3679                         kfree_skb(skb);
3680                 }
3681         }
3682
3683         if (changed & BSS_CHANGED_BEACON_ENABLED)
3684                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
3685
3686 out:
3687         mwl8k_fw_unlock(hw);
3688 }
3689
3690 static void
3691 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3692                        struct ieee80211_bss_conf *info, u32 changed)
3693 {
3694         struct mwl8k_priv *priv = hw->priv;
3695
3696         if (!priv->ap_fw)
3697                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
3698         else
3699                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
3700 }
3701
3702 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3703                                    struct netdev_hw_addr_list *mc_list)
3704 {
3705         struct mwl8k_cmd_pkt *cmd;
3706
3707         /*
3708          * Synthesize and return a command packet that programs the
3709          * hardware multicast address filter.  At this point we don't
3710          * know whether FIF_ALLMULTI is being requested, but if it is,
3711          * we'll end up throwing this packet away and creating a new
3712          * one in mwl8k_configure_filter().
3713          */
3714         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
3715
3716         return (unsigned long)cmd;
3717 }
3718
3719 static int
3720 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3721                                unsigned int changed_flags,
3722                                unsigned int *total_flags)
3723 {
3724         struct mwl8k_priv *priv = hw->priv;
3725
3726         /*
3727          * Hardware sniffer mode is mutually exclusive with STA
3728          * operation, so refuse to enable sniffer mode if a STA
3729          * interface is active.
3730          */
3731         if (!list_empty(&priv->vif_list)) {
3732                 if (net_ratelimit())
3733                         wiphy_info(hw->wiphy,
3734                                    "not enabling sniffer mode because STA interface is active\n");
3735                 return 0;
3736         }
3737
3738         if (!priv->sniffer_enabled) {
3739                 if (mwl8k_cmd_enable_sniffer(hw, 1))
3740                         return 0;
3741                 priv->sniffer_enabled = true;
3742         }
3743
3744         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3745                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3746                         FIF_OTHER_BSS;
3747
3748         return 1;
3749 }
3750
3751 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
3752 {
3753         if (!list_empty(&priv->vif_list))
3754                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
3755
3756         return NULL;
3757 }
3758
3759 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3760                                    unsigned int changed_flags,
3761                                    unsigned int *total_flags,
3762                                    u64 multicast)
3763 {
3764         struct mwl8k_priv *priv = hw->priv;
3765         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3766
3767         /*
3768          * AP firmware doesn't allow fine-grained control over
3769          * the receive filter.
3770          */
3771         if (priv->ap_fw) {
3772                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3773                 kfree(cmd);
3774                 return;
3775         }
3776
3777         /*
3778          * Enable hardware sniffer mode if FIF_CONTROL or
3779          * FIF_OTHER_BSS is requested.
3780          */
3781         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3782             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3783                 kfree(cmd);
3784                 return;
3785         }
3786
3787         /* Clear unsupported feature flags */
3788         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3789
3790         if (mwl8k_fw_lock(hw)) {
3791                 kfree(cmd);
3792                 return;
3793         }
3794
3795         if (priv->sniffer_enabled) {
3796                 mwl8k_cmd_enable_sniffer(hw, 0);
3797                 priv->sniffer_enabled = false;
3798         }
3799
3800         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3801                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3802                         /*
3803                          * Disable the BSS filter.
3804                          */
3805                         mwl8k_cmd_set_pre_scan(hw);
3806                 } else {
3807                         struct mwl8k_vif *mwl8k_vif;
3808                         const u8 *bssid;
3809
3810                         /*
3811                          * Enable the BSS filter.
3812                          *
3813                          * If there is an active STA interface, use that
3814                          * interface's BSSID, otherwise use a dummy one
3815                          * (where the OUI part needs to be nonzero for
3816                          * the BSSID to be accepted by POST_SCAN).
3817                          */
3818                         mwl8k_vif = mwl8k_first_vif(priv);
3819                         if (mwl8k_vif != NULL)
3820                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
3821                         else
3822                                 bssid = "\x01\x00\x00\x00\x00\x00";
3823
3824                         mwl8k_cmd_set_post_scan(hw, bssid);
3825                 }
3826         }
3827
3828         /*
3829          * If FIF_ALLMULTI is being requested, throw away the command
3830          * packet that ->prepare_multicast() built and replace it with
3831          * a command packet that enables reception of all multicast
3832          * packets.
3833          */
3834         if (*total_flags & FIF_ALLMULTI) {
3835                 kfree(cmd);
3836                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
3837         }
3838
3839         if (cmd != NULL) {
3840                 mwl8k_post_cmd(hw, cmd);
3841                 kfree(cmd);
3842         }
3843
3844         mwl8k_fw_unlock(hw);
3845 }
3846
3847 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3848 {
3849         return mwl8k_cmd_set_rts_threshold(hw, value);
3850 }
3851
3852 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
3853                             struct ieee80211_vif *vif,
3854                             struct ieee80211_sta *sta)
3855 {
3856         struct mwl8k_priv *priv = hw->priv;
3857
3858         if (priv->ap_fw)
3859                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
3860         else
3861                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
3862 }
3863
3864 static int mwl8k_sta_add(struct ieee80211_hw *hw,
3865                          struct ieee80211_vif *vif,
3866                          struct ieee80211_sta *sta)
3867 {
3868         struct mwl8k_priv *priv = hw->priv;
3869         int ret;
3870
3871         if (!priv->ap_fw) {
3872                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
3873                 if (ret >= 0) {
3874                         MWL8K_STA(sta)->peer_id = ret;
3875                         return 0;
3876                 }
3877
3878                 return ret;
3879         }
3880
3881         return mwl8k_cmd_set_new_stn_add(hw, vif, sta);
3882 }
3883
3884 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3885                          const struct ieee80211_tx_queue_params *params)
3886 {
3887         struct mwl8k_priv *priv = hw->priv;
3888         int rc;
3889
3890         rc = mwl8k_fw_lock(hw);
3891         if (!rc) {
3892                 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
3893                 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
3894
3895                 if (!priv->wmm_enabled)
3896                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3897
3898                 if (!rc)
3899                         rc = mwl8k_cmd_set_edca_params(hw, queue,
3900                                                        params->cw_min,
3901                                                        params->cw_max,
3902                                                        params->aifs,
3903                                                        params->txop);
3904
3905                 mwl8k_fw_unlock(hw);
3906         }
3907
3908         return rc;
3909 }
3910
3911 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3912                            struct ieee80211_low_level_stats *stats)
3913 {
3914         return mwl8k_cmd_get_stat(hw, stats);
3915 }
3916
3917 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
3918                                 struct survey_info *survey)
3919 {
3920         struct mwl8k_priv *priv = hw->priv;
3921         struct ieee80211_conf *conf = &hw->conf;
3922
3923         if (idx != 0)
3924                 return -ENOENT;
3925
3926         survey->channel = conf->channel;
3927         survey->filled = SURVEY_INFO_NOISE_DBM;
3928         survey->noise = priv->noise;
3929
3930         return 0;
3931 }
3932
3933 static int
3934 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3935                    enum ieee80211_ampdu_mlme_action action,
3936                    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3937 {
3938         switch (action) {
3939         case IEEE80211_AMPDU_RX_START:
3940         case IEEE80211_AMPDU_RX_STOP:
3941                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
3942                         return -ENOTSUPP;
3943                 return 0;
3944         default:
3945                 return -ENOTSUPP;
3946         }
3947 }
3948
3949 static const struct ieee80211_ops mwl8k_ops = {
3950         .tx                     = mwl8k_tx,
3951         .start                  = mwl8k_start,
3952         .stop                   = mwl8k_stop,
3953         .add_interface          = mwl8k_add_interface,
3954         .remove_interface       = mwl8k_remove_interface,
3955         .config                 = mwl8k_config,
3956         .bss_info_changed       = mwl8k_bss_info_changed,
3957         .prepare_multicast      = mwl8k_prepare_multicast,
3958         .configure_filter       = mwl8k_configure_filter,
3959         .set_rts_threshold      = mwl8k_set_rts_threshold,
3960         .sta_add                = mwl8k_sta_add,
3961         .sta_remove             = mwl8k_sta_remove,
3962         .conf_tx                = mwl8k_conf_tx,
3963         .get_stats              = mwl8k_get_stats,
3964         .get_survey             = mwl8k_get_survey,
3965         .ampdu_action           = mwl8k_ampdu_action,
3966 };
3967
3968 static void mwl8k_finalize_join_worker(struct work_struct *work)
3969 {
3970         struct mwl8k_priv *priv =
3971                 container_of(work, struct mwl8k_priv, finalize_join_worker);
3972         struct sk_buff *skb = priv->beacon_skb;
3973         struct ieee80211_mgmt *mgmt = (void *)skb->data;
3974         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
3975         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
3976                                          mgmt->u.beacon.variable, len);
3977         int dtim_period = 1;
3978
3979         if (tim && tim[1] >= 2)
3980                 dtim_period = tim[3];
3981
3982         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
3983
3984         dev_kfree_skb(skb);
3985         priv->beacon_skb = NULL;
3986 }
3987
3988 enum {
3989         MWL8363 = 0,
3990         MWL8687,
3991         MWL8366,
3992 };
3993
3994 #define MWL8K_8366_AP_FW_API 1
3995 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
3996 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
3997
3998 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3999         [MWL8363] = {
4000                 .part_name      = "88w8363",
4001                 .helper_image   = "mwl8k/helper_8363.fw",
4002                 .fw_image_sta   = "mwl8k/fmimage_8363.fw",
4003         },
4004         [MWL8687] = {
4005                 .part_name      = "88w8687",
4006                 .helper_image   = "mwl8k/helper_8687.fw",
4007                 .fw_image_sta   = "mwl8k/fmimage_8687.fw",
4008         },
4009         [MWL8366] = {
4010                 .part_name      = "88w8366",
4011                 .helper_image   = "mwl8k/helper_8366.fw",
4012                 .fw_image_sta   = "mwl8k/fmimage_8366.fw",
4013                 .fw_image_ap    = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4014                 .fw_api_ap      = MWL8K_8366_AP_FW_API,
4015                 .ap_rxd_ops     = &rxd_8366_ap_ops,
4016         },
4017 };
4018
4019 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4020 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4021 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4022 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4023 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4024 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4025 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4026
4027 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4028         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4029         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4030         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4031         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4032         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4033         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4034         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4035         { },
4036 };
4037 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4038
4039 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4040 {
4041         int rc;
4042         printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4043                "Trying alternative firmware %s\n", pci_name(priv->pdev),
4044                priv->fw_pref, priv->fw_alt);
4045         rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4046         if (rc) {
4047                 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4048                        pci_name(priv->pdev), priv->fw_alt);
4049                 return rc;
4050         }
4051         return 0;
4052 }
4053
4054 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4055 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4056 {
4057         struct mwl8k_priv *priv = context;
4058         struct mwl8k_device_info *di = priv->device_info;
4059         int rc;
4060
4061         switch (priv->fw_state) {
4062         case FW_STATE_INIT:
4063                 if (!fw) {
4064                         printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4065                                pci_name(priv->pdev), di->helper_image);
4066                         goto fail;
4067                 }
4068                 priv->fw_helper = fw;
4069                 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4070                                       true);
4071                 if (rc && priv->fw_alt) {
4072                         rc = mwl8k_request_alt_fw(priv);
4073                         if (rc)
4074                                 goto fail;
4075                         priv->fw_state = FW_STATE_LOADING_ALT;
4076                 } else if (rc)
4077                         goto fail;
4078                 else
4079                         priv->fw_state = FW_STATE_LOADING_PREF;
4080                 break;
4081
4082         case FW_STATE_LOADING_PREF:
4083                 if (!fw) {
4084                         if (priv->fw_alt) {
4085                                 rc = mwl8k_request_alt_fw(priv);
4086                                 if (rc)
4087                                         goto fail;
4088                                 priv->fw_state = FW_STATE_LOADING_ALT;
4089                         } else
4090                                 goto fail;
4091                 } else {
4092                         priv->fw_ucode = fw;
4093                         rc = mwl8k_firmware_load_success(priv);
4094                         if (rc)
4095                                 goto fail;
4096                         else
4097                                 complete(&priv->firmware_loading_complete);
4098                 }
4099                 break;
4100
4101         case FW_STATE_LOADING_ALT:
4102                 if (!fw) {
4103                         printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4104                                pci_name(priv->pdev), di->helper_image);
4105                         goto fail;
4106                 }
4107                 priv->fw_ucode = fw;
4108                 rc = mwl8k_firmware_load_success(priv);
4109                 if (rc)
4110                         goto fail;
4111                 else
4112                         complete(&priv->firmware_loading_complete);
4113                 break;
4114
4115         default:
4116                 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4117                        MWL8K_NAME, priv->fw_state);
4118                 BUG_ON(1);
4119         }
4120
4121         return;
4122
4123 fail:
4124         priv->fw_state = FW_STATE_ERROR;
4125         complete(&priv->firmware_loading_complete);
4126         device_release_driver(&priv->pdev->dev);
4127         mwl8k_release_firmware(priv);
4128 }
4129
4130 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4131                                bool nowait)
4132 {
4133         struct mwl8k_priv *priv = hw->priv;
4134         int rc;
4135
4136         /* Reset firmware and hardware */
4137         mwl8k_hw_reset(priv);
4138
4139         /* Ask userland hotplug daemon for the device firmware */
4140         rc = mwl8k_request_firmware(priv, fw_image, nowait);
4141         if (rc) {
4142                 wiphy_err(hw->wiphy, "Firmware files not found\n");
4143                 return rc;
4144         }
4145
4146         if (nowait)
4147                 return rc;
4148
4149         /* Load firmware into hardware */
4150         rc = mwl8k_load_firmware(hw);
4151         if (rc)
4152                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4153
4154         /* Reclaim memory once firmware is successfully loaded */
4155         mwl8k_release_firmware(priv);
4156
4157         return rc;
4158 }
4159
4160 /* initialize hw after successfully loading a firmware image */
4161 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4162 {
4163         struct mwl8k_priv *priv = hw->priv;
4164         int rc = 0;
4165         int i;
4166
4167         if (priv->ap_fw) {
4168                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4169                 if (priv->rxd_ops == NULL) {
4170                         wiphy_err(hw->wiphy,
4171                                   "Driver does not have AP firmware image support for this hardware\n");
4172                         goto err_stop_firmware;
4173                 }
4174         } else {
4175                 priv->rxd_ops = &rxd_sta_ops;
4176         }
4177
4178         priv->sniffer_enabled = false;
4179         priv->wmm_enabled = false;
4180         priv->pending_tx_pkts = 0;
4181
4182         rc = mwl8k_rxq_init(hw, 0);
4183         if (rc)
4184                 goto err_stop_firmware;
4185         rxq_refill(hw, 0, INT_MAX);
4186
4187         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4188                 rc = mwl8k_txq_init(hw, i);
4189                 if (rc)
4190                         goto err_free_queues;
4191         }
4192
4193         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4194         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4195         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4196                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4197         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4198
4199         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4200                          IRQF_SHARED, MWL8K_NAME, hw);
4201         if (rc) {
4202                 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4203                 goto err_free_queues;
4204         }
4205
4206         /*
4207          * Temporarily enable interrupts.  Initial firmware host
4208          * commands use interrupts and avoid polling.  Disable
4209          * interrupts when done.
4210          */
4211         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4212
4213         /* Get config data, mac addrs etc */
4214         if (priv->ap_fw) {
4215                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4216                 if (!rc)
4217                         rc = mwl8k_cmd_set_hw_spec(hw);
4218         } else {
4219                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4220         }
4221         if (rc) {
4222                 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4223                 goto err_free_irq;
4224         }
4225
4226         /* Turn radio off */
4227         rc = mwl8k_cmd_radio_disable(hw);
4228         if (rc) {
4229                 wiphy_err(hw->wiphy, "Cannot disable\n");
4230                 goto err_free_irq;
4231         }
4232
4233         /* Clear MAC address */
4234         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4235         if (rc) {
4236                 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4237                 goto err_free_irq;
4238         }
4239
4240         /* Disable interrupts */
4241         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4242         free_irq(priv->pdev->irq, hw);
4243
4244         wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4245                    priv->device_info->part_name,
4246                    priv->hw_rev, hw->wiphy->perm_addr,
4247                    priv->ap_fw ? "AP" : "STA",
4248                    (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4249                    (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4250
4251         return 0;
4252
4253 err_free_irq:
4254         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4255         free_irq(priv->pdev->irq, hw);
4256
4257 err_free_queues:
4258         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4259                 mwl8k_txq_deinit(hw, i);
4260         mwl8k_rxq_deinit(hw, 0);
4261
4262 err_stop_firmware:
4263         mwl8k_hw_reset(priv);
4264
4265         return rc;
4266 }
4267
4268 /*
4269  * invoke mwl8k_reload_firmware to change the firmware image after the device
4270  * has already been registered
4271  */
4272 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4273 {
4274         int i, rc = 0;
4275         struct mwl8k_priv *priv = hw->priv;
4276
4277         mwl8k_stop(hw);
4278         mwl8k_rxq_deinit(hw, 0);
4279
4280         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4281                 mwl8k_txq_deinit(hw, i);
4282
4283         rc = mwl8k_init_firmware(hw, fw_image, false);
4284         if (rc)
4285                 goto fail;
4286
4287         rc = mwl8k_probe_hw(hw);
4288         if (rc)
4289                 goto fail;
4290
4291         rc = mwl8k_start(hw);
4292         if (rc)
4293                 goto fail;
4294
4295         rc = mwl8k_config(hw, ~0);
4296         if (rc)
4297                 goto fail;
4298
4299         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4300                 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4301                 if (rc)
4302                         goto fail;
4303         }
4304
4305         return rc;
4306
4307 fail:
4308         printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4309         return rc;
4310 }
4311
4312 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4313 {
4314         struct ieee80211_hw *hw = priv->hw;
4315         int i, rc;
4316
4317         rc = mwl8k_load_firmware(hw);
4318         mwl8k_release_firmware(priv);
4319         if (rc) {
4320                 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4321                 return rc;
4322         }
4323
4324         /*
4325          * Extra headroom is the size of the required DMA header
4326          * minus the size of the smallest 802.11 frame (CTS frame).
4327          */
4328         hw->extra_tx_headroom =
4329                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4330
4331         hw->channel_change_time = 10;
4332
4333         hw->queues = MWL8K_TX_QUEUES;
4334
4335         /* Set rssi values to dBm */
4336         hw->flags |= IEEE80211_HW_SIGNAL_DBM;
4337         hw->vif_data_size = sizeof(struct mwl8k_vif);
4338         hw->sta_data_size = sizeof(struct mwl8k_sta);
4339
4340         priv->macids_used = 0;
4341         INIT_LIST_HEAD(&priv->vif_list);
4342
4343         /* Set default radio state and preamble */
4344         priv->radio_on = 0;
4345         priv->radio_short_preamble = 0;
4346
4347         /* Finalize join worker */
4348         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4349
4350         /* TX reclaim and RX tasklets.  */
4351         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4352         tasklet_disable(&priv->poll_tx_task);
4353         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4354         tasklet_disable(&priv->poll_rx_task);
4355
4356         /* Power management cookie */
4357         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4358         if (priv->cookie == NULL)
4359                 return -ENOMEM;
4360
4361         mutex_init(&priv->fw_mutex);
4362         priv->fw_mutex_owner = NULL;
4363         priv->fw_mutex_depth = 0;
4364         priv->hostcmd_wait = NULL;
4365
4366         spin_lock_init(&priv->tx_lock);
4367
4368         priv->tx_wait = NULL;
4369
4370         rc = mwl8k_probe_hw(hw);
4371         if (rc)
4372                 goto err_free_cookie;
4373
4374         hw->wiphy->interface_modes = 0;
4375         if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4376                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4377         if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4378                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4379
4380         rc = ieee80211_register_hw(hw);
4381         if (rc) {
4382                 wiphy_err(hw->wiphy, "Cannot register device\n");
4383                 goto err_unprobe_hw;
4384         }
4385
4386         return 0;
4387
4388 err_unprobe_hw:
4389         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4390                 mwl8k_txq_deinit(hw, i);
4391         mwl8k_rxq_deinit(hw, 0);
4392
4393 err_free_cookie:
4394         if (priv->cookie != NULL)
4395                 pci_free_consistent(priv->pdev, 4,
4396                                 priv->cookie, priv->cookie_dma);
4397
4398         return rc;
4399 }
4400 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4401                                  const struct pci_device_id *id)
4402 {
4403         static int printed_version;
4404         struct ieee80211_hw *hw;
4405         struct mwl8k_priv *priv;
4406         struct mwl8k_device_info *di;
4407         int rc;
4408
4409         if (!printed_version) {
4410                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4411                 printed_version = 1;
4412         }
4413
4414
4415         rc = pci_enable_device(pdev);
4416         if (rc) {
4417                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4418                        MWL8K_NAME);
4419                 return rc;
4420         }
4421
4422         rc = pci_request_regions(pdev, MWL8K_NAME);
4423         if (rc) {
4424                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4425                        MWL8K_NAME);
4426                 goto err_disable_device;
4427         }
4428
4429         pci_set_master(pdev);
4430
4431
4432         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4433         if (hw == NULL) {
4434                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4435                 rc = -ENOMEM;
4436                 goto err_free_reg;
4437         }
4438
4439         SET_IEEE80211_DEV(hw, &pdev->dev);
4440         pci_set_drvdata(pdev, hw);
4441
4442         priv = hw->priv;
4443         priv->hw = hw;
4444         priv->pdev = pdev;
4445         priv->device_info = &mwl8k_info_tbl[id->driver_data];
4446
4447
4448         priv->sram = pci_iomap(pdev, 0, 0x10000);
4449         if (priv->sram == NULL) {
4450                 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4451                 goto err_iounmap;
4452         }
4453
4454         /*
4455          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4456          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4457          */
4458         priv->regs = pci_iomap(pdev, 1, 0x10000);
4459         if (priv->regs == NULL) {
4460                 priv->regs = pci_iomap(pdev, 2, 0x10000);
4461                 if (priv->regs == NULL) {
4462                         wiphy_err(hw->wiphy, "Cannot map device registers\n");
4463                         goto err_iounmap;
4464                 }
4465         }
4466
4467         /*
4468          * Choose the initial fw image depending on user input.  If a second
4469          * image is available, make it the alternative image that will be
4470          * loaded if the first one fails.
4471          */
4472         init_completion(&priv->firmware_loading_complete);
4473         di = priv->device_info;
4474         if (ap_mode_default && di->fw_image_ap) {
4475                 priv->fw_pref = di->fw_image_ap;
4476                 priv->fw_alt = di->fw_image_sta;
4477         } else if (!ap_mode_default && di->fw_image_sta) {
4478                 priv->fw_pref = di->fw_image_sta;
4479                 priv->fw_alt = di->fw_image_ap;
4480         } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4481                 printk(KERN_WARNING "AP fw is unavailable.  Using STA fw.");
4482                 priv->fw_pref = di->fw_image_sta;
4483         } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4484                 printk(KERN_WARNING "STA fw is unavailable.  Using AP fw.");
4485                 priv->fw_pref = di->fw_image_ap;
4486         }
4487         rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4488         if (rc)
4489                 goto err_stop_firmware;
4490         return rc;
4491
4492 err_stop_firmware:
4493         mwl8k_hw_reset(priv);
4494
4495 err_iounmap:
4496         if (priv->regs != NULL)
4497                 pci_iounmap(pdev, priv->regs);
4498
4499         if (priv->sram != NULL)
4500                 pci_iounmap(pdev, priv->sram);
4501
4502         pci_set_drvdata(pdev, NULL);
4503         ieee80211_free_hw(hw);
4504
4505 err_free_reg:
4506         pci_release_regions(pdev);
4507
4508 err_disable_device:
4509         pci_disable_device(pdev);
4510
4511         return rc;
4512 }
4513
4514 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4515 {
4516         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4517 }
4518
4519 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4520 {
4521         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4522         struct mwl8k_priv *priv;
4523         int i;
4524
4525         if (hw == NULL)
4526                 return;
4527         priv = hw->priv;
4528
4529         wait_for_completion(&priv->firmware_loading_complete);
4530
4531         if (priv->fw_state == FW_STATE_ERROR) {
4532                 mwl8k_hw_reset(priv);
4533                 goto unmap;
4534         }
4535
4536         ieee80211_stop_queues(hw);
4537
4538         ieee80211_unregister_hw(hw);
4539
4540         /* Remove TX reclaim and RX tasklets.  */
4541         tasklet_kill(&priv->poll_tx_task);
4542         tasklet_kill(&priv->poll_rx_task);
4543
4544         /* Stop hardware */
4545         mwl8k_hw_reset(priv);
4546
4547         /* Return all skbs to mac80211 */
4548         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4549                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4550
4551         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4552                 mwl8k_txq_deinit(hw, i);
4553
4554         mwl8k_rxq_deinit(hw, 0);
4555
4556         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4557
4558 unmap:
4559         pci_iounmap(pdev, priv->regs);
4560         pci_iounmap(pdev, priv->sram);
4561         pci_set_drvdata(pdev, NULL);
4562         ieee80211_free_hw(hw);
4563         pci_release_regions(pdev);
4564         pci_disable_device(pdev);
4565 }
4566
4567 static struct pci_driver mwl8k_driver = {
4568         .name           = MWL8K_NAME,
4569         .id_table       = mwl8k_pci_id_table,
4570         .probe          = mwl8k_probe,
4571         .remove         = __devexit_p(mwl8k_remove),
4572         .shutdown       = __devexit_p(mwl8k_shutdown),
4573 };
4574
4575 static int __init mwl8k_init(void)
4576 {
4577         return pci_register_driver(&mwl8k_driver);
4578 }
4579
4580 static void __exit mwl8k_exit(void)
4581 {
4582         pci_unregister_driver(&mwl8k_driver);
4583 }
4584
4585 module_init(mwl8k_init);
4586 module_exit(mwl8k_exit);
4587
4588 MODULE_DESCRIPTION(MWL8K_DESC);
4589 MODULE_VERSION(MWL8K_VERSION);
4590 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
4591 MODULE_LICENSE("GPL");