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 <net/mac80211.h>
  23 #include <linux/moduleparam.h>
  24 #include <linux/firmware.h>
  25 #include <linux/workqueue.h>
  26
  27 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  28 #define MWL8K_NAME      KBUILD_MODNAME
  29 #define MWL8K_VERSION   "0.12"
  30
  31 /* Register definitions */
  32 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  33 #define  MWL8K_MODE_STA                          0x0000005a
  34 #define  MWL8K_MODE_AP                           0x000000a5
  35 #define MWL8K_HIU_INT_CODE                      0x00000c14
  36 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  37 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  38 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  39 #define MWL8K_HIU_SCRATCH                       0x00000c40
  40
  41 /* Host->device communications */
  42 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  43 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  44 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  45 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  46 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  47 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  48 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  49 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  50 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  51
  52 /* Device->host communications */
  53 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  54 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  55 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  56 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  57 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  58 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  59 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  60 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  61 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  62 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  63 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  64 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  65 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  66 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  67 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  68
  69 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  70                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  71                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  72                                  MWL8K_A2H_INT_RADAR_DETECT | \
  73                                  MWL8K_A2H_INT_RADIO_ON | \
  74                                  MWL8K_A2H_INT_RADIO_OFF | \
  75                                  MWL8K_A2H_INT_MAC_EVENT | \
  76                                  MWL8K_A2H_INT_OPC_DONE | \
  77                                  MWL8K_A2H_INT_RX_READY | \
  78                                  MWL8K_A2H_INT_TX_DONE)
  79
  80 #define MWL8K_RX_QUEUES         1
  81 #define MWL8K_TX_QUEUES         4
  82
  83 struct rxd_ops {
  84         int rxd_size;
  85         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
  86         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
  87         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
  88                            __le16 *qos);
  89 };
  90
  91 struct mwl8k_device_info {
  92         char *part_name;
  93         char *helper_image;
  94         char *fw_image;
  95         struct rxd_ops *ap_rxd_ops;
  96 };
  97
  98 struct mwl8k_rx_queue {
  99         int rxd_count;
 100
 101         /* hw receives here */
 102         int head;
 103
 104         /* refill descs here */
 105         int tail;
 106
 107         void *rxd;
 108         dma_addr_t rxd_dma;
 109         struct {
 110                 struct sk_buff *skb;
 111                 DECLARE_PCI_UNMAP_ADDR(dma)
 112         } *buf;
 113 };
 114
 115 struct mwl8k_tx_queue {
 116         /* hw transmits here */
 117         int head;
 118
 119         /* sw appends here */
 120         int tail;
 121
 122         unsigned int len;
 123         struct mwl8k_tx_desc *txd;
 124         dma_addr_t txd_dma;
 125         struct sk_buff **skb;
 126 };
 127
 128 struct mwl8k_priv {
 129         struct ieee80211_hw *hw;
 130         struct pci_dev *pdev;
 131
 132         struct mwl8k_device_info *device_info;
 133
 134         void __iomem *sram;
 135         void __iomem *regs;
 136
 137         /* firmware */
 138         struct firmware *fw_helper;
 139         struct firmware *fw_ucode;
 140
 141         /* hardware/firmware parameters */
 142         bool ap_fw;
 143         struct rxd_ops *rxd_ops;
 144         struct ieee80211_supported_band band_24;
 145         struct ieee80211_channel channels_24[14];
 146         struct ieee80211_rate rates_24[14];
 147         struct ieee80211_supported_band band_50;
 148         struct ieee80211_channel channels_50[4];
 149         struct ieee80211_rate rates_50[9];
 150         u32 ap_macids_supported;
 151         u32 sta_macids_supported;
 152
 153         /* firmware access */
 154         struct mutex fw_mutex;
 155         struct task_struct *fw_mutex_owner;
 156         int fw_mutex_depth;
 157         struct completion *hostcmd_wait;
 158
 159         /* lock held over TX and TX reap */
 160         spinlock_t tx_lock;
 161
 162         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 163         struct completion *tx_wait;
 164
 165         /* List of interfaces.  */
 166         u32 macids_used;
 167         struct list_head vif_list;
 168
 169         /* power management status cookie from firmware */
 170         u32 *cookie;
 171         dma_addr_t cookie_dma;
 172
 173         u16 num_mcaddrs;
 174         u8 hw_rev;
 175         u32 fw_rev;
 176
 177         /*
 178          * Running count of TX packets in flight, to avoid
 179          * iterating over the transmit rings each time.
 180          */
 181         int pending_tx_pkts;
 182
 183         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 184         struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
 185
 186         bool radio_on;
 187         bool radio_short_preamble;
 188         bool sniffer_enabled;
 189         bool wmm_enabled;
 190
 191         /* XXX need to convert this to handle multiple interfaces */
 192         bool capture_beacon;
 193         u8 capture_bssid[ETH_ALEN];
 194         struct sk_buff *beacon_skb;
 195
 196         /*
 197          * This FJ worker has to be global as it is scheduled from the
 198          * RX handler.  At this point we don't know which interface it
 199          * belongs to until the list of bssids waiting to complete join
 200          * is checked.
 201          */
 202         struct work_struct finalize_join_worker;
 203
 204         /* Tasklet to perform TX reclaim.  */
 205         struct tasklet_struct poll_tx_task;
 206
 207         /* Tasklet to perform RX.  */
 208         struct tasklet_struct poll_rx_task;
 209 };
 210
 211 /* Per interface specific private data */
 212 struct mwl8k_vif {
 213         struct list_head list;
 214         struct ieee80211_vif *vif;
 215
 216         /* Firmware macid for this vif.  */
 217         int macid;
 218
 219         /* Non AMPDU sequence number assigned by driver.  */
 220         u16 seqno;
 221 };
 222 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 223
 224 struct mwl8k_sta {
 225         /* Index into station database. Returned by UPDATE_STADB.  */
 226         u8 peer_id;
 227 };
 228 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 229
 230 static const struct ieee80211_channel mwl8k_channels_24[] = {
 231         { .center_freq = 2412, .hw_value = 1, },
 232         { .center_freq = 2417, .hw_value = 2, },
 233         { .center_freq = 2422, .hw_value = 3, },
 234         { .center_freq = 2427, .hw_value = 4, },
 235         { .center_freq = 2432, .hw_value = 5, },
 236         { .center_freq = 2437, .hw_value = 6, },
 237         { .center_freq = 2442, .hw_value = 7, },
 238         { .center_freq = 2447, .hw_value = 8, },
 239         { .center_freq = 2452, .hw_value = 9, },
 240         { .center_freq = 2457, .hw_value = 10, },
 241         { .center_freq = 2462, .hw_value = 11, },
 242         { .center_freq = 2467, .hw_value = 12, },
 243         { .center_freq = 2472, .hw_value = 13, },
 244         { .center_freq = 2484, .hw_value = 14, },
 245 };
 246
 247 static const struct ieee80211_rate mwl8k_rates_24[] = {
 248         { .bitrate = 10, .hw_value = 2, },
 249         { .bitrate = 20, .hw_value = 4, },
 250         { .bitrate = 55, .hw_value = 11, },
 251         { .bitrate = 110, .hw_value = 22, },
 252         { .bitrate = 220, .hw_value = 44, },
 253         { .bitrate = 60, .hw_value = 12, },
 254         { .bitrate = 90, .hw_value = 18, },
 255         { .bitrate = 120, .hw_value = 24, },
 256         { .bitrate = 180, .hw_value = 36, },
 257         { .bitrate = 240, .hw_value = 48, },
 258         { .bitrate = 360, .hw_value = 72, },
 259         { .bitrate = 480, .hw_value = 96, },
 260         { .bitrate = 540, .hw_value = 108, },
 261         { .bitrate = 720, .hw_value = 144, },
 262 };
 263
 264 static const struct ieee80211_channel mwl8k_channels_50[] = {
 265         { .center_freq = 5180, .hw_value = 36, },
 266         { .center_freq = 5200, .hw_value = 40, },
 267         { .center_freq = 5220, .hw_value = 44, },
 268         { .center_freq = 5240, .hw_value = 48, },
 269 };
 270
 271 static const struct ieee80211_rate mwl8k_rates_50[] = {
 272         { .bitrate = 60, .hw_value = 12, },
 273         { .bitrate = 90, .hw_value = 18, },
 274         { .bitrate = 120, .hw_value = 24, },
 275         { .bitrate = 180, .hw_value = 36, },
 276         { .bitrate = 240, .hw_value = 48, },
 277         { .bitrate = 360, .hw_value = 72, },
 278         { .bitrate = 480, .hw_value = 96, },
 279         { .bitrate = 540, .hw_value = 108, },
 280         { .bitrate = 720, .hw_value = 144, },
 281 };
 282
 283 /* Set or get info from Firmware */
 284 #define MWL8K_CMD_SET                   0x0001
 285 #define MWL8K_CMD_GET                   0x0000
 286
 287 /* Firmware command codes */
 288 #define MWL8K_CMD_CODE_DNLD             0x0001
 289 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 290 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 291 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 292 #define MWL8K_CMD_GET_STAT              0x0014
 293 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 294 #define MWL8K_CMD_RF_TX_POWER           0x001e
 295 #define MWL8K_CMD_RF_ANTENNA            0x0020
 296 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 297 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 298 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 299 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 300 #define MWL8K_CMD_SET_AID               0x010d
 301 #define MWL8K_CMD_SET_RATE              0x0110
 302 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 303 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 304 #define MWL8K_CMD_SET_SLOT              0x0114
 305 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 306 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 307 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 308 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 309 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 310 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 311 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 312 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 313 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 314 #define MWL8K_CMD_UPDATE_STADB          0x1123
 315
 316 static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
 317 {
 318 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 319                                         snprintf(buf, bufsize, "%s", #x);\
 320                                         return buf;\
 321                                         } while (0)
 322         switch (cmd & ~0x8000) {
 323                 MWL8K_CMDNAME(CODE_DNLD);
 324                 MWL8K_CMDNAME(GET_HW_SPEC);
 325                 MWL8K_CMDNAME(SET_HW_SPEC);
 326                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 327                 MWL8K_CMDNAME(GET_STAT);
 328                 MWL8K_CMDNAME(RADIO_CONTROL);
 329                 MWL8K_CMDNAME(RF_TX_POWER);
 330                 MWL8K_CMDNAME(RF_ANTENNA);
 331                 MWL8K_CMDNAME(SET_BEACON);
 332                 MWL8K_CMDNAME(SET_PRE_SCAN);
 333                 MWL8K_CMDNAME(SET_POST_SCAN);
 334                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 335                 MWL8K_CMDNAME(SET_AID);
 336                 MWL8K_CMDNAME(SET_RATE);
 337                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 338                 MWL8K_CMDNAME(RTS_THRESHOLD);
 339                 MWL8K_CMDNAME(SET_SLOT);
 340                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 341                 MWL8K_CMDNAME(SET_WMM_MODE);
 342                 MWL8K_CMDNAME(MIMO_CONFIG);
 343                 MWL8K_CMDNAME(USE_FIXED_RATE);
 344                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 345                 MWL8K_CMDNAME(SET_MAC_ADDR);
 346                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 347                 MWL8K_CMDNAME(BSS_START);
 348                 MWL8K_CMDNAME(SET_NEW_STN);
 349                 MWL8K_CMDNAME(UPDATE_STADB);
 350         default:
 351                 snprintf(buf, bufsize, "0x%x", cmd);
 352         }
 353 #undef MWL8K_CMDNAME
 354
 355         return buf;
 356 }
 357
 358 /* Hardware and firmware reset */
 359 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 360 {
 361         iowrite32(MWL8K_H2A_INT_RESET,
 362                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 363         iowrite32(MWL8K_H2A_INT_RESET,
 364                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 365         msleep(20);
 366 }
 367
 368 /* Release fw image */
 369 static void mwl8k_release_fw(struct firmware **fw)
 370 {
 371         if (*fw == NULL)
 372                 return;
 373         release_firmware(*fw);
 374         *fw = NULL;
 375 }
 376
 377 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 378 {
 379         mwl8k_release_fw(&priv->fw_ucode);
 380         mwl8k_release_fw(&priv->fw_helper);
 381 }
 382
 383 /* Request fw image */
 384 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 385                             const char *fname, struct firmware **fw)
 386 {
 387         /* release current image */
 388         if (*fw != NULL)
 389                 mwl8k_release_fw(fw);
 390
 391         return request_firmware((const struct firmware **)fw,
 392                                 fname, &priv->pdev->dev);
 393 }
 394
 395 static int mwl8k_request_firmware(struct mwl8k_priv *priv)
 396 {
 397         struct mwl8k_device_info *di = priv->device_info;
 398         int rc;
 399
 400         if (di->helper_image != NULL) {
 401                 rc = mwl8k_request_fw(priv, di->helper_image, &priv->fw_helper);
 402                 if (rc) {
 403                         printk(KERN_ERR "%s: Error requesting helper "
 404                                "firmware file %s\n", pci_name(priv->pdev),
 405                                di->helper_image);
 406                         return rc;
 407                 }
 408         }
 409
 410         rc = mwl8k_request_fw(priv, di->fw_image, &priv->fw_ucode);
 411         if (rc) {
 412                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 413                        pci_name(priv->pdev), di->fw_image);
 414                 mwl8k_release_fw(&priv->fw_helper);
 415                 return rc;
 416         }
 417
 418         return 0;
 419 }
 420
 421 struct mwl8k_cmd_pkt {
 422         __le16  code;
 423         __le16  length;
 424         __u8    seq_num;
 425         __u8    macid;
 426         __le16  result;
 427         char    payload[0];
 428 } __attribute__((packed));
 429
 430 /*
 431  * Firmware loading.
 432  */
 433 static int
 434 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 435 {
 436         void __iomem *regs = priv->regs;
 437         dma_addr_t dma_addr;
 438         int loops;
 439
 440         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 441         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 442                 return -ENOMEM;
 443
 444         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 445         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 446         iowrite32(MWL8K_H2A_INT_DOORBELL,
 447                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 448         iowrite32(MWL8K_H2A_INT_DUMMY,
 449                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 450
 451         loops = 1000;
 452         do {
 453                 u32 int_code;
 454
 455                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 456                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 457                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 458                         break;
 459                 }
 460
 461                 cond_resched();
 462                 udelay(1);
 463         } while (--loops);
 464
 465         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 466
 467         return loops ? 0 : -ETIMEDOUT;
 468 }
 469
 470 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 471                                 const u8 *data, size_t length)
 472 {
 473         struct mwl8k_cmd_pkt *cmd;
 474         int done;
 475         int rc = 0;
 476
 477         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 478         if (cmd == NULL)
 479                 return -ENOMEM;
 480
 481         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 482         cmd->seq_num = 0;
 483         cmd->macid = 0;
 484         cmd->result = 0;
 485
 486         done = 0;
 487         while (length) {
 488                 int block_size = length > 256 ? 256 : length;
 489
 490                 memcpy(cmd->payload, data + done, block_size);
 491                 cmd->length = cpu_to_le16(block_size);
 492
 493                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 494                                                 sizeof(*cmd) + block_size);
 495                 if (rc)
 496                         break;
 497
 498                 done += block_size;
 499                 length -= block_size;
 500         }
 501
 502         if (!rc) {
 503                 cmd->length = 0;
 504                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 505         }
 506
 507         kfree(cmd);
 508
 509         return rc;
 510 }
 511
 512 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 513                                 const u8 *data, size_t length)
 514 {
 515         unsigned char *buffer;
 516         int may_continue, rc = 0;
 517         u32 done, prev_block_size;
 518
 519         buffer = kmalloc(1024, GFP_KERNEL);
 520         if (buffer == NULL)
 521                 return -ENOMEM;
 522
 523         done = 0;
 524         prev_block_size = 0;
 525         may_continue = 1000;
 526         while (may_continue > 0) {
 527                 u32 block_size;
 528
 529                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 530                 if (block_size & 1) {
 531                         block_size &= ~1;
 532                         may_continue--;
 533                 } else {
 534                         done += prev_block_size;
 535                         length -= prev_block_size;
 536                 }
 537
 538                 if (block_size > 1024 || block_size > length) {
 539                         rc = -EOVERFLOW;
 540                         break;
 541                 }
 542
 543                 if (length == 0) {
 544                         rc = 0;
 545                         break;
 546                 }
 547
 548                 if (block_size == 0) {
 549                         rc = -EPROTO;
 550                         may_continue--;
 551                         udelay(1);
 552                         continue;
 553                 }
 554
 555                 prev_block_size = block_size;
 556                 memcpy(buffer, data + done, block_size);
 557
 558                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 559                 if (rc)
 560                         break;
 561         }
 562
 563         if (!rc && length != 0)
 564                 rc = -EREMOTEIO;
 565
 566         kfree(buffer);
 567
 568         return rc;
 569 }
 570
 571 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 572 {
 573         struct mwl8k_priv *priv = hw->priv;
 574         struct firmware *fw = priv->fw_ucode;
 575         int rc;
 576         int loops;
 577
 578         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 579                 struct firmware *helper = priv->fw_helper;
 580
 581                 if (helper == NULL) {
 582                         printk(KERN_ERR "%s: helper image needed but none "
 583                                "given\n", pci_name(priv->pdev));
 584                         return -EINVAL;
 585                 }
 586
 587                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 588                 if (rc) {
 589                         printk(KERN_ERR "%s: unable to load firmware "
 590                                "helper image\n", pci_name(priv->pdev));
 591                         return rc;
 592                 }
 593                 msleep(5);
 594
 595                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 596         } else {
 597                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 598         }
 599
 600         if (rc) {
 601                 printk(KERN_ERR "%s: unable to load firmware image\n",
 602                        pci_name(priv->pdev));
 603                 return rc;
 604         }
 605
 606         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 607
 608         loops = 500000;
 609         do {
 610                 u32 ready_code;
 611
 612                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 613                 if (ready_code == MWL8K_FWAP_READY) {
 614                         priv->ap_fw = 1;
 615                         break;
 616                 } else if (ready_code == MWL8K_FWSTA_READY) {
 617                         priv->ap_fw = 0;
 618                         break;
 619                 }
 620
 621                 cond_resched();
 622                 udelay(1);
 623         } while (--loops);
 624
 625         return loops ? 0 : -ETIMEDOUT;
 626 }
 627
 628
 629 /* DMA header used by firmware and hardware.  */
 630 struct mwl8k_dma_data {
 631         __le16 fwlen;
 632         struct ieee80211_hdr wh;
 633         char data[0];
 634 } __attribute__((packed));
 635
 636 /* Routines to add/remove DMA header from skb.  */
 637 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 638 {
 639         struct mwl8k_dma_data *tr;
 640         int hdrlen;
 641
 642         tr = (struct mwl8k_dma_data *)skb->data;
 643         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 644
 645         if (hdrlen != sizeof(tr->wh)) {
 646                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 647                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 648                         *((__le16 *)(tr->data - 2)) = qos;
 649                 } else {
 650                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 651                 }
 652         }
 653
 654         if (hdrlen != sizeof(*tr))
 655                 skb_pull(skb, sizeof(*tr) - hdrlen);
 656 }
 657
 658 static inline void mwl8k_add_dma_header(struct sk_buff *skb)
 659 {
 660         struct ieee80211_hdr *wh;
 661         int hdrlen;
 662         struct mwl8k_dma_data *tr;
 663
 664         /*
 665          * Add a firmware DMA header; the firmware requires that we
 666          * present a 2-byte payload length followed by a 4-address
 667          * header (without QoS field), followed (optionally) by any
 668          * WEP/ExtIV header (but only filled in for CCMP).
 669          */
 670         wh = (struct ieee80211_hdr *)skb->data;
 671
 672         hdrlen = ieee80211_hdrlen(wh->frame_control);
 673         if (hdrlen != sizeof(*tr))
 674                 skb_push(skb, sizeof(*tr) - hdrlen);
 675
 676         if (ieee80211_is_data_qos(wh->frame_control))
 677                 hdrlen -= 2;
 678
 679         tr = (struct mwl8k_dma_data *)skb->data;
 680         if (wh != &tr->wh)
 681                 memmove(&tr->wh, wh, hdrlen);
 682         if (hdrlen != sizeof(tr->wh))
 683                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 684
 685         /*
 686          * Firmware length is the length of the fully formed "802.11
 687          * payload".  That is, everything except for the 802.11 header.
 688          * This includes all crypto material including the MIC.
 689          */
 690         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
 691 }
 692
 693
 694 /*
 695  * Packet reception for 88w8366 AP firmware.
 696  */
 697 struct mwl8k_rxd_8366_ap {
 698         __le16 pkt_len;
 699         __u8 sq2;
 700         __u8 rate;
 701         __le32 pkt_phys_addr;
 702         __le32 next_rxd_phys_addr;
 703         __le16 qos_control;
 704         __le16 htsig2;
 705         __le32 hw_rssi_info;
 706         __le32 hw_noise_floor_info;
 707         __u8 noise_floor;
 708         __u8 pad0[3];
 709         __u8 rssi;
 710         __u8 rx_status;
 711         __u8 channel;
 712         __u8 rx_ctrl;
 713 } __attribute__((packed));
 714
 715 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 716 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 717 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 718
 719 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 720
 721 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 722 {
 723         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 724
 725         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 726         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 727 }
 728
 729 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 730 {
 731         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 732
 733         rxd->pkt_len = cpu_to_le16(len);
 734         rxd->pkt_phys_addr = cpu_to_le32(addr);
 735         wmb();
 736         rxd->rx_ctrl = 0;
 737 }
 738
 739 static int
 740 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 741                           __le16 *qos)
 742 {
 743         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 744
 745         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 746                 return -1;
 747         rmb();
 748
 749         memset(status, 0, sizeof(*status));
 750
 751         status->signal = -rxd->rssi;
 752         status->noise = -rxd->noise_floor;
 753
 754         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 755                 status->flag |= RX_FLAG_HT;
 756                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 757                         status->flag |= RX_FLAG_40MHZ;
 758                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 759         } else {
 760                 int i;
 761
 762                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 763                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 764                                 status->rate_idx = i;
 765                                 break;
 766                         }
 767                 }
 768         }
 769
 770         if (rxd->channel > 14) {
 771                 status->band = IEEE80211_BAND_5GHZ;
 772                 if (!(status->flag & RX_FLAG_HT))
 773                         status->rate_idx -= 5;
 774         } else {
 775                 status->band = IEEE80211_BAND_2GHZ;
 776         }
 777         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 778
 779         *qos = rxd->qos_control;
 780
 781         return le16_to_cpu(rxd->pkt_len);
 782 }
 783
 784 static struct rxd_ops rxd_8366_ap_ops = {
 785         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 786         .rxd_init       = mwl8k_rxd_8366_ap_init,
 787         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 788         .rxd_process    = mwl8k_rxd_8366_ap_process,
 789 };
 790
 791 /*
 792  * Packet reception for STA firmware.
 793  */
 794 struct mwl8k_rxd_sta {
 795         __le16 pkt_len;
 796         __u8 link_quality;
 797         __u8 noise_level;
 798         __le32 pkt_phys_addr;
 799         __le32 next_rxd_phys_addr;
 800         __le16 qos_control;
 801         __le16 rate_info;
 802         __le32 pad0[4];
 803         __u8 rssi;
 804         __u8 channel;
 805         __le16 pad1;
 806         __u8 rx_ctrl;
 807         __u8 rx_status;
 808         __u8 pad2[2];
 809 } __attribute__((packed));
 810
 811 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 812 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 813 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 814 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 815 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 816 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 817
 818 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 819
 820 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 821 {
 822         struct mwl8k_rxd_sta *rxd = _rxd;
 823
 824         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 825         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 826 }
 827
 828 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 829 {
 830         struct mwl8k_rxd_sta *rxd = _rxd;
 831
 832         rxd->pkt_len = cpu_to_le16(len);
 833         rxd->pkt_phys_addr = cpu_to_le32(addr);
 834         wmb();
 835         rxd->rx_ctrl = 0;
 836 }
 837
 838 static int
 839 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 840                        __le16 *qos)
 841 {
 842         struct mwl8k_rxd_sta *rxd = _rxd;
 843         u16 rate_info;
 844
 845         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 846                 return -1;
 847         rmb();
 848
 849         rate_info = le16_to_cpu(rxd->rate_info);
 850
 851         memset(status, 0, sizeof(*status));
 852
 853         status->signal = -rxd->rssi;
 854         status->noise = -rxd->noise_level;
 855         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 856         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
 857
 858         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
 859                 status->flag |= RX_FLAG_SHORTPRE;
 860         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
 861                 status->flag |= RX_FLAG_40MHZ;
 862         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
 863                 status->flag |= RX_FLAG_SHORT_GI;
 864         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
 865                 status->flag |= RX_FLAG_HT;
 866
 867         if (rxd->channel > 14) {
 868                 status->band = IEEE80211_BAND_5GHZ;
 869                 if (!(status->flag & RX_FLAG_HT))
 870                         status->rate_idx -= 5;
 871         } else {
 872                 status->band = IEEE80211_BAND_2GHZ;
 873         }
 874         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 875
 876         *qos = rxd->qos_control;
 877
 878         return le16_to_cpu(rxd->pkt_len);
 879 }
 880
 881 static struct rxd_ops rxd_sta_ops = {
 882         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
 883         .rxd_init       = mwl8k_rxd_sta_init,
 884         .rxd_refill     = mwl8k_rxd_sta_refill,
 885         .rxd_process    = mwl8k_rxd_sta_process,
 886 };
 887
 888
 889 #define MWL8K_RX_DESCS          256
 890 #define MWL8K_RX_MAXSZ          3800
 891
 892 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 893 {
 894         struct mwl8k_priv *priv = hw->priv;
 895         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 896         int size;
 897         int i;
 898
 899         rxq->rxd_count = 0;
 900         rxq->head = 0;
 901         rxq->tail = 0;
 902
 903         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 904
 905         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 906         if (rxq->rxd == NULL) {
 907                 printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
 908                        wiphy_name(hw->wiphy));
 909                 return -ENOMEM;
 910         }
 911         memset(rxq->rxd, 0, size);
 912
 913         rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
 914         if (rxq->buf == NULL) {
 915                 printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
 916                        wiphy_name(hw->wiphy));
 917                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
 918                 return -ENOMEM;
 919         }
 920         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
 921
 922         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 923                 int desc_size;
 924                 void *rxd;
 925                 int nexti;
 926                 dma_addr_t next_dma_addr;
 927
 928                 desc_size = priv->rxd_ops->rxd_size;
 929                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
 930
 931                 nexti = i + 1;
 932                 if (nexti == MWL8K_RX_DESCS)
 933                         nexti = 0;
 934                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
 935
 936                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
 937         }
 938
 939         return 0;
 940 }
 941
 942 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
 943 {
 944         struct mwl8k_priv *priv = hw->priv;
 945         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 946         int refilled;
 947
 948         refilled = 0;
 949         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
 950                 struct sk_buff *skb;
 951                 dma_addr_t addr;
 952                 int rx;
 953                 void *rxd;
 954
 955                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
 956                 if (skb == NULL)
 957                         break;
 958
 959                 addr = pci_map_single(priv->pdev, skb->data,
 960                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
 961
 962                 rxq->rxd_count++;
 963                 rx = rxq->tail++;
 964                 if (rxq->tail == MWL8K_RX_DESCS)
 965                         rxq->tail = 0;
 966                 rxq->buf[rx].skb = skb;
 967                 pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
 968
 969                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
 970                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
 971
 972                 refilled++;
 973         }
 974
 975         return refilled;
 976 }
 977
 978 /* Must be called only when the card's reception is completely halted */
 979 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
 980 {
 981         struct mwl8k_priv *priv = hw->priv;
 982         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 983         int i;
 984
 985         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 986                 if (rxq->buf[i].skb != NULL) {
 987                         pci_unmap_single(priv->pdev,
 988                                          pci_unmap_addr(&rxq->buf[i], dma),
 989                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
 990                         pci_unmap_addr_set(&rxq->buf[i], dma, 0);
 991
 992                         kfree_skb(rxq->buf[i].skb);
 993                         rxq->buf[i].skb = NULL;
 994                 }
 995         }
 996
 997         kfree(rxq->buf);
 998         rxq->buf = NULL;
 999
1000         pci_free_consistent(priv->pdev,
1001                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1002                             rxq->rxd, rxq->rxd_dma);
1003         rxq->rxd = NULL;
1004 }
1005
1006
1007 /*
1008  * Scan a list of BSSIDs to process for finalize join.
1009  * Allows for extension to process multiple BSSIDs.
1010  */
1011 static inline int
1012 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1013 {
1014         return priv->capture_beacon &&
1015                 ieee80211_is_beacon(wh->frame_control) &&
1016                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1017 }
1018
1019 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1020                                      struct sk_buff *skb)
1021 {
1022         struct mwl8k_priv *priv = hw->priv;
1023
1024         priv->capture_beacon = false;
1025         memset(priv->capture_bssid, 0, ETH_ALEN);
1026
1027         /*
1028          * Use GFP_ATOMIC as rxq_process is called from
1029          * the primary interrupt handler, memory allocation call
1030          * must not sleep.
1031          */
1032         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1033         if (priv->beacon_skb != NULL)
1034                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1035 }
1036
1037 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1038 {
1039         struct mwl8k_priv *priv = hw->priv;
1040         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1041         int processed;
1042
1043         processed = 0;
1044         while (rxq->rxd_count && limit--) {
1045                 struct sk_buff *skb;
1046                 void *rxd;
1047                 int pkt_len;
1048                 struct ieee80211_rx_status status;
1049                 __le16 qos;
1050
1051                 skb = rxq->buf[rxq->head].skb;
1052                 if (skb == NULL)
1053                         break;
1054
1055                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1056
1057                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1058                 if (pkt_len < 0)
1059                         break;
1060
1061                 rxq->buf[rxq->head].skb = NULL;
1062
1063                 pci_unmap_single(priv->pdev,
1064                                  pci_unmap_addr(&rxq->buf[rxq->head], dma),
1065                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1066                 pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1067
1068                 rxq->head++;
1069                 if (rxq->head == MWL8K_RX_DESCS)
1070                         rxq->head = 0;
1071
1072                 rxq->rxd_count--;
1073
1074                 skb_put(skb, pkt_len);
1075                 mwl8k_remove_dma_header(skb, qos);
1076
1077                 /*
1078                  * Check for a pending join operation.  Save a
1079                  * copy of the beacon and schedule a tasklet to
1080                  * send a FINALIZE_JOIN command to the firmware.
1081                  */
1082                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1083                         mwl8k_save_beacon(hw, skb);
1084
1085                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1086                 ieee80211_rx_irqsafe(hw, skb);
1087
1088                 processed++;
1089         }
1090
1091         return processed;
1092 }
1093
1094
1095 /*
1096  * Packet transmission.
1097  */
1098
1099 #define MWL8K_TXD_STATUS_OK                     0x00000001
1100 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1101 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1102 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1103 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1104
1105 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1106 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1107 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1108 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1109 #define MWL8K_QOS_EOSP                          0x0010
1110
1111 struct mwl8k_tx_desc {
1112         __le32 status;
1113         __u8 data_rate;
1114         __u8 tx_priority;
1115         __le16 qos_control;
1116         __le32 pkt_phys_addr;
1117         __le16 pkt_len;
1118         __u8 dest_MAC_addr[ETH_ALEN];
1119         __le32 next_txd_phys_addr;
1120         __le32 reserved;
1121         __le16 rate_info;
1122         __u8 peer_id;
1123         __u8 tx_frag_cnt;
1124 } __attribute__((packed));
1125
1126 #define MWL8K_TX_DESCS          128
1127
1128 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1129 {
1130         struct mwl8k_priv *priv = hw->priv;
1131         struct mwl8k_tx_queue *txq = priv->txq + index;
1132         int size;
1133         int i;
1134
1135         txq->len = 0;
1136         txq->head = 0;
1137         txq->tail = 0;
1138
1139         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1140
1141         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1142         if (txq->txd == NULL) {
1143                 printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
1144                        wiphy_name(hw->wiphy));
1145                 return -ENOMEM;
1146         }
1147         memset(txq->txd, 0, size);
1148
1149         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1150         if (txq->skb == NULL) {
1151                 printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
1152                        wiphy_name(hw->wiphy));
1153                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1154                 return -ENOMEM;
1155         }
1156         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1157
1158         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1159                 struct mwl8k_tx_desc *tx_desc;
1160                 int nexti;
1161
1162                 tx_desc = txq->txd + i;
1163                 nexti = (i + 1) % MWL8K_TX_DESCS;
1164
1165                 tx_desc->status = 0;
1166                 tx_desc->next_txd_phys_addr =
1167                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1168         }
1169
1170         return 0;
1171 }
1172
1173 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1174 {
1175         iowrite32(MWL8K_H2A_INT_PPA_READY,
1176                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1177         iowrite32(MWL8K_H2A_INT_DUMMY,
1178                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1179         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1180 }
1181
1182 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1183 {
1184         struct mwl8k_priv *priv = hw->priv;
1185         int i;
1186
1187         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1188                 struct mwl8k_tx_queue *txq = priv->txq + i;
1189                 int fw_owned = 0;
1190                 int drv_owned = 0;
1191                 int unused = 0;
1192                 int desc;
1193
1194                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1195                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1196                         u32 status;
1197
1198                         status = le32_to_cpu(tx_desc->status);
1199                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1200                                 fw_owned++;
1201                         else
1202                                 drv_owned++;
1203
1204                         if (tx_desc->pkt_len == 0)
1205                                 unused++;
1206                 }
1207
1208                 printk(KERN_ERR "%s: txq[%d] len=%d head=%d tail=%d "
1209                        "fw_owned=%d drv_owned=%d unused=%d\n",
1210                        wiphy_name(hw->wiphy), i,
1211                        txq->len, txq->head, txq->tail,
1212                        fw_owned, drv_owned, unused);
1213         }
1214 }
1215
1216 /*
1217  * Must be called with priv->fw_mutex held and tx queues stopped.
1218  */
1219 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1220
1221 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1222 {
1223         struct mwl8k_priv *priv = hw->priv;
1224         DECLARE_COMPLETION_ONSTACK(tx_wait);
1225         int retry;
1226         int rc;
1227
1228         might_sleep();
1229
1230         /*
1231          * The TX queues are stopped at this point, so this test
1232          * doesn't need to take ->tx_lock.
1233          */
1234         if (!priv->pending_tx_pkts)
1235                 return 0;
1236
1237         retry = 0;
1238         rc = 0;
1239
1240         spin_lock_bh(&priv->tx_lock);
1241         priv->tx_wait = &tx_wait;
1242         while (!rc) {
1243                 int oldcount;
1244                 unsigned long timeout;
1245
1246                 oldcount = priv->pending_tx_pkts;
1247
1248                 spin_unlock_bh(&priv->tx_lock);
1249                 timeout = wait_for_completion_timeout(&tx_wait,
1250                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1251                 spin_lock_bh(&priv->tx_lock);
1252
1253                 if (timeout) {
1254                         WARN_ON(priv->pending_tx_pkts);
1255                         if (retry) {
1256                                 printk(KERN_NOTICE "%s: tx rings drained\n",
1257                                        wiphy_name(hw->wiphy));
1258                         }
1259                         break;
1260                 }
1261
1262                 if (priv->pending_tx_pkts < oldcount) {
1263                         printk(KERN_NOTICE "%s: waiting for tx rings "
1264                                "to drain (%d -> %d pkts)\n",
1265                                wiphy_name(hw->wiphy), oldcount,
1266                                priv->pending_tx_pkts);
1267                         retry = 1;
1268                         continue;
1269                 }
1270
1271                 priv->tx_wait = NULL;
1272
1273                 printk(KERN_ERR "%s: tx rings stuck for %d ms\n",
1274                        wiphy_name(hw->wiphy), MWL8K_TX_WAIT_TIMEOUT_MS);
1275                 mwl8k_dump_tx_rings(hw);
1276
1277                 rc = -ETIMEDOUT;
1278         }
1279         spin_unlock_bh(&priv->tx_lock);
1280
1281         return rc;
1282 }
1283
1284 #define MWL8K_TXD_SUCCESS(status)                               \
1285         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1286                      MWL8K_TXD_STATUS_OK_RETRY |                \
1287                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1288
1289 static int
1290 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1291 {
1292         struct mwl8k_priv *priv = hw->priv;
1293         struct mwl8k_tx_queue *txq = priv->txq + index;
1294         int processed;
1295
1296         processed = 0;
1297         while (txq->len > 0 && limit--) {
1298                 int tx;
1299                 struct mwl8k_tx_desc *tx_desc;
1300                 unsigned long addr;
1301                 int size;
1302                 struct sk_buff *skb;
1303                 struct ieee80211_tx_info *info;
1304                 u32 status;
1305
1306                 tx = txq->head;
1307                 tx_desc = txq->txd + tx;
1308
1309                 status = le32_to_cpu(tx_desc->status);
1310
1311                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1312                         if (!force)
1313                                 break;
1314                         tx_desc->status &=
1315                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1316                 }
1317
1318                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1319                 BUG_ON(txq->len == 0);
1320                 txq->len--;
1321                 priv->pending_tx_pkts--;
1322
1323                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1324                 size = le16_to_cpu(tx_desc->pkt_len);
1325                 skb = txq->skb[tx];
1326                 txq->skb[tx] = NULL;
1327
1328                 BUG_ON(skb == NULL);
1329                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1330
1331                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1332
1333                 /* Mark descriptor as unused */
1334                 tx_desc->pkt_phys_addr = 0;
1335                 tx_desc->pkt_len = 0;
1336
1337                 info = IEEE80211_SKB_CB(skb);
1338                 ieee80211_tx_info_clear_status(info);
1339                 if (MWL8K_TXD_SUCCESS(status))
1340                         info->flags |= IEEE80211_TX_STAT_ACK;
1341
1342                 ieee80211_tx_status_irqsafe(hw, skb);
1343
1344                 processed++;
1345         }
1346
1347         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1348                 ieee80211_wake_queue(hw, index);
1349
1350         return processed;
1351 }
1352
1353 /* must be called only when the card's transmit is completely halted */
1354 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1355 {
1356         struct mwl8k_priv *priv = hw->priv;
1357         struct mwl8k_tx_queue *txq = priv->txq + index;
1358
1359         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1360
1361         kfree(txq->skb);
1362         txq->skb = NULL;
1363
1364         pci_free_consistent(priv->pdev,
1365                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1366                             txq->txd, txq->txd_dma);
1367         txq->txd = NULL;
1368 }
1369
1370 static int
1371 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1372 {
1373         struct mwl8k_priv *priv = hw->priv;
1374         struct ieee80211_tx_info *tx_info;
1375         struct mwl8k_vif *mwl8k_vif;
1376         struct ieee80211_hdr *wh;
1377         struct mwl8k_tx_queue *txq;
1378         struct mwl8k_tx_desc *tx;
1379         dma_addr_t dma;
1380         u32 txstatus;
1381         u8 txdatarate;
1382         u16 qos;
1383
1384         wh = (struct ieee80211_hdr *)skb->data;
1385         if (ieee80211_is_data_qos(wh->frame_control))
1386                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1387         else
1388                 qos = 0;
1389
1390         mwl8k_add_dma_header(skb);
1391         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1392
1393         tx_info = IEEE80211_SKB_CB(skb);
1394         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1395
1396         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1397                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1398                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1399                 mwl8k_vif->seqno += 0x10;
1400         }
1401
1402         /* Setup firmware control bit fields for each frame type.  */
1403         txstatus = 0;
1404         txdatarate = 0;
1405         if (ieee80211_is_mgmt(wh->frame_control) ||
1406             ieee80211_is_ctl(wh->frame_control)) {
1407                 txdatarate = 0;
1408                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1409         } else if (ieee80211_is_data(wh->frame_control)) {
1410                 txdatarate = 1;
1411                 if (is_multicast_ether_addr(wh->addr1))
1412                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1413
1414                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1415                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1416                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1417                 else
1418                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1419         }
1420
1421         dma = pci_map_single(priv->pdev, skb->data,
1422                                 skb->len, PCI_DMA_TODEVICE);
1423
1424         if (pci_dma_mapping_error(priv->pdev, dma)) {
1425                 printk(KERN_DEBUG "%s: failed to dma map skb, "
1426                        "dropping TX frame.\n", wiphy_name(hw->wiphy));
1427                 dev_kfree_skb(skb);
1428                 return NETDEV_TX_OK;
1429         }
1430
1431         spin_lock_bh(&priv->tx_lock);
1432
1433         txq = priv->txq + index;
1434
1435         BUG_ON(txq->skb[txq->tail] != NULL);
1436         txq->skb[txq->tail] = skb;
1437
1438         tx = txq->txd + txq->tail;
1439         tx->data_rate = txdatarate;
1440         tx->tx_priority = index;
1441         tx->qos_control = cpu_to_le16(qos);
1442         tx->pkt_phys_addr = cpu_to_le32(dma);
1443         tx->pkt_len = cpu_to_le16(skb->len);
1444         tx->rate_info = 0;
1445         if (!priv->ap_fw && tx_info->control.sta != NULL)
1446                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1447         else
1448                 tx->peer_id = 0;
1449         wmb();
1450         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1451
1452         txq->len++;
1453         priv->pending_tx_pkts++;
1454
1455         txq->tail++;
1456         if (txq->tail == MWL8K_TX_DESCS)
1457                 txq->tail = 0;
1458
1459         if (txq->head == txq->tail)
1460                 ieee80211_stop_queue(hw, index);
1461
1462         mwl8k_tx_start(priv);
1463
1464         spin_unlock_bh(&priv->tx_lock);
1465
1466         return NETDEV_TX_OK;
1467 }
1468
1469
1470 /*
1471  * Firmware access.
1472  *
1473  * We have the following requirements for issuing firmware commands:
1474  * - Some commands require that the packet transmit path is idle when
1475  *   the command is issued.  (For simplicity, we'll just quiesce the
1476  *   transmit path for every command.)
1477  * - There are certain sequences of commands that need to be issued to
1478  *   the hardware sequentially, with no other intervening commands.
1479  *
1480  * This leads to an implementation of a "firmware lock" as a mutex that
1481  * can be taken recursively, and which is taken by both the low-level
1482  * command submission function (mwl8k_post_cmd) as well as any users of
1483  * that function that require issuing of an atomic sequence of commands,
1484  * and quiesces the transmit path whenever it's taken.
1485  */
1486 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1487 {
1488         struct mwl8k_priv *priv = hw->priv;
1489
1490         if (priv->fw_mutex_owner != current) {
1491                 int rc;
1492
1493                 mutex_lock(&priv->fw_mutex);
1494                 ieee80211_stop_queues(hw);
1495
1496                 rc = mwl8k_tx_wait_empty(hw);
1497                 if (rc) {
1498                         ieee80211_wake_queues(hw);
1499                         mutex_unlock(&priv->fw_mutex);
1500
1501                         return rc;
1502                 }
1503
1504                 priv->fw_mutex_owner = current;
1505         }
1506
1507         priv->fw_mutex_depth++;
1508
1509         return 0;
1510 }
1511
1512 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1513 {
1514         struct mwl8k_priv *priv = hw->priv;
1515
1516         if (!--priv->fw_mutex_depth) {
1517                 ieee80211_wake_queues(hw);
1518                 priv->fw_mutex_owner = NULL;
1519                 mutex_unlock(&priv->fw_mutex);
1520         }
1521 }
1522
1523
1524 /*
1525  * Command processing.
1526  */
1527
1528 /* Timeout firmware commands after 10s */
1529 #define MWL8K_CMD_TIMEOUT_MS    10000
1530
1531 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1532 {
1533         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1534         struct mwl8k_priv *priv = hw->priv;
1535         void __iomem *regs = priv->regs;
1536         dma_addr_t dma_addr;
1537         unsigned int dma_size;
1538         int rc;
1539         unsigned long timeout = 0;
1540         u8 buf[32];
1541
1542         cmd->result = 0xffff;
1543         dma_size = le16_to_cpu(cmd->length);
1544         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1545                                   PCI_DMA_BIDIRECTIONAL);
1546         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1547                 return -ENOMEM;
1548
1549         rc = mwl8k_fw_lock(hw);
1550         if (rc) {
1551                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1552                                                 PCI_DMA_BIDIRECTIONAL);
1553                 return rc;
1554         }
1555
1556         priv->hostcmd_wait = &cmd_wait;
1557         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1558         iowrite32(MWL8K_H2A_INT_DOORBELL,
1559                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1560         iowrite32(MWL8K_H2A_INT_DUMMY,
1561                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1562
1563         timeout = wait_for_completion_timeout(&cmd_wait,
1564                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1565
1566         priv->hostcmd_wait = NULL;
1567
1568         mwl8k_fw_unlock(hw);
1569
1570         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1571                                         PCI_DMA_BIDIRECTIONAL);
1572
1573         if (!timeout) {
1574                 printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
1575                        wiphy_name(hw->wiphy),
1576                        mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1577                        MWL8K_CMD_TIMEOUT_MS);
1578                 rc = -ETIMEDOUT;
1579         } else {
1580                 int ms;
1581
1582                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1583
1584                 rc = cmd->result ? -EINVAL : 0;
1585                 if (rc)
1586                         printk(KERN_ERR "%s: Command %s error 0x%x\n",
1587                                wiphy_name(hw->wiphy),
1588                                mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1589                                le16_to_cpu(cmd->result));
1590                 else if (ms > 2000)
1591                         printk(KERN_NOTICE "%s: Command %s took %d ms\n",
1592                                wiphy_name(hw->wiphy),
1593                                mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1594                                ms);
1595         }
1596
1597         return rc;
1598 }
1599
1600 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1601                                  struct ieee80211_vif *vif,
1602                                  struct mwl8k_cmd_pkt *cmd)
1603 {
1604         if (vif != NULL)
1605                 cmd->macid = MWL8K_VIF(vif)->macid;
1606         return mwl8k_post_cmd(hw, cmd);
1607 }
1608
1609 /*
1610  * Setup code shared between STA and AP firmware images.
1611  */
1612 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1613 {
1614         struct mwl8k_priv *priv = hw->priv;
1615
1616         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1617         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1618
1619         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1620         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1621
1622         priv->band_24.band = IEEE80211_BAND_2GHZ;
1623         priv->band_24.channels = priv->channels_24;
1624         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1625         priv->band_24.bitrates = priv->rates_24;
1626         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1627
1628         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1629 }
1630
1631 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1632 {
1633         struct mwl8k_priv *priv = hw->priv;
1634
1635         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1636         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1637
1638         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1639         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1640
1641         priv->band_50.band = IEEE80211_BAND_5GHZ;
1642         priv->band_50.channels = priv->channels_50;
1643         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1644         priv->band_50.bitrates = priv->rates_50;
1645         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1646
1647         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1648 }
1649
1650 /*
1651  * CMD_GET_HW_SPEC (STA version).
1652  */
1653 struct mwl8k_cmd_get_hw_spec_sta {
1654         struct mwl8k_cmd_pkt header;
1655         __u8 hw_rev;
1656         __u8 host_interface;
1657         __le16 num_mcaddrs;
1658         __u8 perm_addr[ETH_ALEN];
1659         __le16 region_code;
1660         __le32 fw_rev;
1661         __le32 ps_cookie;
1662         __le32 caps;
1663         __u8 mcs_bitmap[16];
1664         __le32 rx_queue_ptr;
1665         __le32 num_tx_queues;
1666         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1667         __le32 caps2;
1668         __le32 num_tx_desc_per_queue;
1669         __le32 total_rxd;
1670 } __attribute__((packed));
1671
1672 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1673 #define MWL8K_CAP_GREENFIELD            0x08000000
1674 #define MWL8K_CAP_AMPDU                 0x04000000
1675 #define MWL8K_CAP_RX_STBC               0x01000000
1676 #define MWL8K_CAP_TX_STBC               0x00800000
1677 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1678 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1679 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1680 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1681 #define MWL8K_CAP_DELAY_BA              0x00003000
1682 #define MWL8K_CAP_MIMO                  0x00000200
1683 #define MWL8K_CAP_40MHZ                 0x00000100
1684 #define MWL8K_CAP_BAND_MASK             0x00000007
1685 #define MWL8K_CAP_5GHZ                  0x00000004
1686 #define MWL8K_CAP_2GHZ4                 0x00000001
1687
1688 static void
1689 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1690                   struct ieee80211_supported_band *band, u32 cap)
1691 {
1692         int rx_streams;
1693         int tx_streams;
1694
1695         band->ht_cap.ht_supported = 1;
1696
1697         if (cap & MWL8K_CAP_MAX_AMSDU)
1698                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1699         if (cap & MWL8K_CAP_GREENFIELD)
1700                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1701         if (cap & MWL8K_CAP_AMPDU) {
1702                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1703                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1704                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1705         }
1706         if (cap & MWL8K_CAP_RX_STBC)
1707                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1708         if (cap & MWL8K_CAP_TX_STBC)
1709                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1710         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1711                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1712         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1713                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1714         if (cap & MWL8K_CAP_DELAY_BA)
1715                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1716         if (cap & MWL8K_CAP_40MHZ)
1717                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1718
1719         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1720         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1721
1722         band->ht_cap.mcs.rx_mask[0] = 0xff;
1723         if (rx_streams >= 2)
1724                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1725         if (rx_streams >= 3)
1726                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1727         band->ht_cap.mcs.rx_mask[4] = 0x01;
1728         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1729
1730         if (rx_streams != tx_streams) {
1731                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1732                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1733                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1734         }
1735 }
1736
1737 static void
1738 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1739 {
1740         struct mwl8k_priv *priv = hw->priv;
1741
1742         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1743                 mwl8k_setup_2ghz_band(hw);
1744                 if (caps & MWL8K_CAP_MIMO)
1745                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1746         }
1747
1748         if (caps & MWL8K_CAP_5GHZ) {
1749                 mwl8k_setup_5ghz_band(hw);
1750                 if (caps & MWL8K_CAP_MIMO)
1751                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1752         }
1753 }
1754
1755 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1756 {
1757         struct mwl8k_priv *priv = hw->priv;
1758         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1759         int rc;
1760         int i;
1761
1762         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1763         if (cmd == NULL)
1764                 return -ENOMEM;
1765
1766         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1767         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1768
1769         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1770         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1771         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1772         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1773         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1774                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1775         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1776         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1777
1778         rc = mwl8k_post_cmd(hw, &cmd->header);
1779
1780         if (!rc) {
1781                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1782                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1783                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1784                 priv->hw_rev = cmd->hw_rev;
1785                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1786                 priv->ap_macids_supported = 0x00000000;
1787                 priv->sta_macids_supported = 0x00000001;
1788         }
1789
1790         kfree(cmd);
1791         return rc;
1792 }
1793
1794 /*
1795  * CMD_GET_HW_SPEC (AP version).
1796  */
1797 struct mwl8k_cmd_get_hw_spec_ap {
1798         struct mwl8k_cmd_pkt header;
1799         __u8 hw_rev;
1800         __u8 host_interface;
1801         __le16 num_wcb;
1802         __le16 num_mcaddrs;
1803         __u8 perm_addr[ETH_ALEN];
1804         __le16 region_code;
1805         __le16 num_antenna;
1806         __le32 fw_rev;
1807         __le32 wcbbase0;
1808         __le32 rxwrptr;
1809         __le32 rxrdptr;
1810         __le32 ps_cookie;
1811         __le32 wcbbase1;
1812         __le32 wcbbase2;
1813         __le32 wcbbase3;
1814 } __attribute__((packed));
1815
1816 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1817 {
1818         struct mwl8k_priv *priv = hw->priv;
1819         struct mwl8k_cmd_get_hw_spec_ap *cmd;
1820         int rc;
1821
1822         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1823         if (cmd == NULL)
1824                 return -ENOMEM;
1825
1826         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1827         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1828
1829         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1830         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1831
1832         rc = mwl8k_post_cmd(hw, &cmd->header);
1833
1834         if (!rc) {
1835                 int off;
1836
1837                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1838                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1839                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1840                 priv->hw_rev = cmd->hw_rev;
1841                 mwl8k_setup_2ghz_band(hw);
1842                 priv->ap_macids_supported = 0x000000ff;
1843                 priv->sta_macids_supported = 0x00000000;
1844
1845                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1846                 iowrite32(cpu_to_le32(priv->txq[0].txd_dma), priv->sram + off);
1847
1848                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1849                 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1850
1851                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1852                 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1853
1854                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1855                 iowrite32(cpu_to_le32(priv->txq[1].txd_dma), priv->sram + off);
1856
1857                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1858                 iowrite32(cpu_to_le32(priv->txq[2].txd_dma), priv->sram + off);
1859
1860                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1861                 iowrite32(cpu_to_le32(priv->txq[3].txd_dma), priv->sram + off);
1862         }
1863
1864         kfree(cmd);
1865         return rc;
1866 }
1867
1868 /*
1869  * CMD_SET_HW_SPEC.
1870  */
1871 struct mwl8k_cmd_set_hw_spec {
1872         struct mwl8k_cmd_pkt header;
1873         __u8 hw_rev;
1874         __u8 host_interface;
1875         __le16 num_mcaddrs;
1876         __u8 perm_addr[ETH_ALEN];
1877         __le16 region_code;
1878         __le32 fw_rev;
1879         __le32 ps_cookie;
1880         __le32 caps;
1881         __le32 rx_queue_ptr;
1882         __le32 num_tx_queues;
1883         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1884         __le32 flags;
1885         __le32 num_tx_desc_per_queue;
1886         __le32 total_rxd;
1887 } __attribute__((packed));
1888
1889 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
1890 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
1891 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
1892
1893 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1894 {
1895         struct mwl8k_priv *priv = hw->priv;
1896         struct mwl8k_cmd_set_hw_spec *cmd;
1897         int rc;
1898         int i;
1899
1900         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1901         if (cmd == NULL)
1902                 return -ENOMEM;
1903
1904         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1905         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1906
1907         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1908         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1909         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1910         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1911                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1912         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
1913                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
1914                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
1915         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1916         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1917
1918         rc = mwl8k_post_cmd(hw, &cmd->header);
1919         kfree(cmd);
1920
1921         return rc;
1922 }
1923
1924 /*
1925  * CMD_MAC_MULTICAST_ADR.
1926  */
1927 struct mwl8k_cmd_mac_multicast_adr {
1928         struct mwl8k_cmd_pkt header;
1929         __le16 action;
1930         __le16 numaddr;
1931         __u8 addr[0][ETH_ALEN];
1932 };
1933
1934 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
1935 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
1936 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
1937 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
1938
1939 static struct mwl8k_cmd_pkt *
1940 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1941                               int mc_count, struct dev_addr_list *mclist)
1942 {
1943         struct mwl8k_priv *priv = hw->priv;
1944         struct mwl8k_cmd_mac_multicast_adr *cmd;
1945         int size;
1946
1947         if (allmulti || mc_count > priv->num_mcaddrs) {
1948                 allmulti = 1;
1949                 mc_count = 0;
1950         }
1951
1952         size = sizeof(*cmd) + mc_count * ETH_ALEN;
1953
1954         cmd = kzalloc(size, GFP_ATOMIC);
1955         if (cmd == NULL)
1956                 return NULL;
1957
1958         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
1959         cmd->header.length = cpu_to_le16(size);
1960         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
1961                                   MWL8K_ENABLE_RX_BROADCAST);
1962
1963         if (allmulti) {
1964                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
1965         } else if (mc_count) {
1966                 int i;
1967
1968                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
1969                 cmd->numaddr = cpu_to_le16(mc_count);
1970                 for (i = 0; i < mc_count && mclist; i++) {
1971                         if (mclist->da_addrlen != ETH_ALEN) {
1972                                 kfree(cmd);
1973                                 return NULL;
1974                         }
1975                         memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
1976                         mclist = mclist->next;
1977                 }
1978         }
1979
1980         return &cmd->header;
1981 }
1982
1983 /*
1984  * CMD_GET_STAT.
1985  */
1986 struct mwl8k_cmd_get_stat {
1987         struct mwl8k_cmd_pkt header;
1988         __le32 stats[64];
1989 } __attribute__((packed));
1990
1991 #define MWL8K_STAT_ACK_FAILURE  9
1992 #define MWL8K_STAT_RTS_FAILURE  12
1993 #define MWL8K_STAT_FCS_ERROR    24
1994 #define MWL8K_STAT_RTS_SUCCESS  11
1995
1996 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
1997                               struct ieee80211_low_level_stats *stats)
1998 {
1999         struct mwl8k_cmd_get_stat *cmd;
2000         int rc;
2001
2002         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2003         if (cmd == NULL)
2004                 return -ENOMEM;
2005
2006         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2007         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2008
2009         rc = mwl8k_post_cmd(hw, &cmd->header);
2010         if (!rc) {
2011                 stats->dot11ACKFailureCount =
2012                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2013                 stats->dot11RTSFailureCount =
2014                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2015                 stats->dot11FCSErrorCount =
2016                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2017                 stats->dot11RTSSuccessCount =
2018                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2019         }
2020         kfree(cmd);
2021
2022         return rc;
2023 }
2024
2025 /*
2026  * CMD_RADIO_CONTROL.
2027  */
2028 struct mwl8k_cmd_radio_control {
2029         struct mwl8k_cmd_pkt header;
2030         __le16 action;
2031         __le16 control;
2032         __le16 radio_on;
2033 } __attribute__((packed));
2034
2035 static int
2036 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2037 {
2038         struct mwl8k_priv *priv = hw->priv;
2039         struct mwl8k_cmd_radio_control *cmd;
2040         int rc;
2041
2042         if (enable == priv->radio_on && !force)
2043                 return 0;
2044
2045         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2046         if (cmd == NULL)
2047                 return -ENOMEM;
2048
2049         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2050         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2051         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2052         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2053         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2054
2055         rc = mwl8k_post_cmd(hw, &cmd->header);
2056         kfree(cmd);
2057
2058         if (!rc)
2059                 priv->radio_on = enable;
2060
2061         return rc;
2062 }
2063
2064 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2065 {
2066         return mwl8k_cmd_radio_control(hw, 0, 0);
2067 }
2068
2069 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2070 {
2071         return mwl8k_cmd_radio_control(hw, 1, 0);
2072 }
2073
2074 static int
2075 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2076 {
2077         struct mwl8k_priv *priv = hw->priv;
2078
2079         priv->radio_short_preamble = short_preamble;
2080
2081         return mwl8k_cmd_radio_control(hw, 1, 1);
2082 }
2083
2084 /*
2085  * CMD_RF_TX_POWER.
2086  */
2087 #define MWL8K_TX_POWER_LEVEL_TOTAL      8
2088
2089 struct mwl8k_cmd_rf_tx_power {
2090         struct mwl8k_cmd_pkt header;
2091         __le16 action;
2092         __le16 support_level;
2093         __le16 current_level;
2094         __le16 reserved;
2095         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2096 } __attribute__((packed));
2097
2098 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2099 {
2100         struct mwl8k_cmd_rf_tx_power *cmd;
2101         int rc;
2102
2103         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2104         if (cmd == NULL)
2105                 return -ENOMEM;
2106
2107         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2108         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2109         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2110         cmd->support_level = cpu_to_le16(dBm);
2111
2112         rc = mwl8k_post_cmd(hw, &cmd->header);
2113         kfree(cmd);
2114
2115         return rc;
2116 }
2117
2118 /*
2119  * CMD_RF_ANTENNA.
2120  */
2121 struct mwl8k_cmd_rf_antenna {
2122         struct mwl8k_cmd_pkt header;
2123         __le16 antenna;
2124         __le16 mode;
2125 } __attribute__((packed));
2126
2127 #define MWL8K_RF_ANTENNA_RX             1
2128 #define MWL8K_RF_ANTENNA_TX             2
2129
2130 static int
2131 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2132 {
2133         struct mwl8k_cmd_rf_antenna *cmd;
2134         int rc;
2135
2136         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2137         if (cmd == NULL)
2138                 return -ENOMEM;
2139
2140         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2141         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2142         cmd->antenna = cpu_to_le16(antenna);
2143         cmd->mode = cpu_to_le16(mask);
2144
2145         rc = mwl8k_post_cmd(hw, &cmd->header);
2146         kfree(cmd);
2147
2148         return rc;
2149 }
2150
2151 /*
2152  * CMD_SET_BEACON.
2153  */
2154 struct mwl8k_cmd_set_beacon {
2155         struct mwl8k_cmd_pkt header;
2156         __le16 beacon_len;
2157         __u8 beacon[0];
2158 };
2159
2160 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2161                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2162 {
2163         struct mwl8k_cmd_set_beacon *cmd;
2164         int rc;
2165
2166         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2167         if (cmd == NULL)
2168                 return -ENOMEM;
2169
2170         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2171         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2172         cmd->beacon_len = cpu_to_le16(len);
2173         memcpy(cmd->beacon, beacon, len);
2174
2175         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2176         kfree(cmd);
2177
2178         return rc;
2179 }
2180
2181 /*
2182  * CMD_SET_PRE_SCAN.
2183  */
2184 struct mwl8k_cmd_set_pre_scan {
2185         struct mwl8k_cmd_pkt header;
2186 } __attribute__((packed));
2187
2188 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2189 {
2190         struct mwl8k_cmd_set_pre_scan *cmd;
2191         int rc;
2192
2193         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2194         if (cmd == NULL)
2195                 return -ENOMEM;
2196
2197         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2198         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2199
2200         rc = mwl8k_post_cmd(hw, &cmd->header);
2201         kfree(cmd);
2202
2203         return rc;
2204 }
2205
2206 /*
2207  * CMD_SET_POST_SCAN.
2208  */
2209 struct mwl8k_cmd_set_post_scan {
2210         struct mwl8k_cmd_pkt header;
2211         __le32 isibss;
2212         __u8 bssid[ETH_ALEN];
2213 } __attribute__((packed));
2214
2215 static int
2216 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2217 {
2218         struct mwl8k_cmd_set_post_scan *cmd;
2219         int rc;
2220
2221         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2222         if (cmd == NULL)
2223                 return -ENOMEM;
2224
2225         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2226         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2227         cmd->isibss = 0;
2228         memcpy(cmd->bssid, mac, ETH_ALEN);
2229
2230         rc = mwl8k_post_cmd(hw, &cmd->header);
2231         kfree(cmd);
2232
2233         return rc;
2234 }
2235
2236 /*
2237  * CMD_SET_RF_CHANNEL.
2238  */
2239 struct mwl8k_cmd_set_rf_channel {
2240         struct mwl8k_cmd_pkt header;
2241         __le16 action;
2242         __u8 current_channel;
2243         __le32 channel_flags;
2244 } __attribute__((packed));
2245
2246 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2247                                     struct ieee80211_conf *conf)
2248 {
2249         struct ieee80211_channel *channel = conf->channel;
2250         struct mwl8k_cmd_set_rf_channel *cmd;
2251         int rc;
2252
2253         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2254         if (cmd == NULL)
2255                 return -ENOMEM;
2256
2257         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2258         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2259         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2260         cmd->current_channel = channel->hw_value;
2261
2262         if (channel->band == IEEE80211_BAND_2GHZ)
2263                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2264         else if (channel->band == IEEE80211_BAND_5GHZ)
2265                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2266
2267         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2268             conf->channel_type == NL80211_CHAN_HT20)
2269                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2270         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2271                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2272         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2273                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2274
2275         rc = mwl8k_post_cmd(hw, &cmd->header);
2276         kfree(cmd);
2277
2278         return rc;
2279 }
2280
2281 /*
2282  * CMD_SET_AID.
2283  */
2284 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2285 #define MWL8K_FRAME_PROT_11G                            0x07
2286 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2287 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2288
2289 struct mwl8k_cmd_update_set_aid {
2290         struct  mwl8k_cmd_pkt header;
2291         __le16  aid;
2292
2293          /* AP's MAC address (BSSID) */
2294         __u8    bssid[ETH_ALEN];
2295         __le16  protection_mode;
2296         __u8    supp_rates[14];
2297 } __attribute__((packed));
2298
2299 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2300 {
2301         int i;
2302         int j;
2303
2304         /*
2305          * Clear nonstandard rates 4 and 13.
2306          */
2307         mask &= 0x1fef;
2308
2309         for (i = 0, j = 0; i < 14; i++) {
2310                 if (mask & (1 << i))
2311                         rates[j++] = mwl8k_rates_24[i].hw_value;
2312         }
2313 }
2314
2315 static int
2316 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2317                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2318 {
2319         struct mwl8k_cmd_update_set_aid *cmd;
2320         u16 prot_mode;
2321         int rc;
2322
2323         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2324         if (cmd == NULL)
2325                 return -ENOMEM;
2326
2327         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2328         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2329         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2330         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2331
2332         if (vif->bss_conf.use_cts_prot) {
2333                 prot_mode = MWL8K_FRAME_PROT_11G;
2334         } else {
2335                 switch (vif->bss_conf.ht_operation_mode &
2336                         IEEE80211_HT_OP_MODE_PROTECTION) {
2337                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2338                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2339                         break;
2340                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2341                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2342                         break;
2343                 default:
2344                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2345                         break;
2346                 }
2347         }
2348         cmd->protection_mode = cpu_to_le16(prot_mode);
2349
2350         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2351
2352         rc = mwl8k_post_cmd(hw, &cmd->header);
2353         kfree(cmd);
2354
2355         return rc;
2356 }
2357
2358 /*
2359  * CMD_SET_RATE.
2360  */
2361 struct mwl8k_cmd_set_rate {
2362         struct  mwl8k_cmd_pkt header;
2363         __u8    legacy_rates[14];
2364
2365         /* Bitmap for supported MCS codes.  */
2366         __u8    mcs_set[16];
2367         __u8    reserved[16];
2368 } __attribute__((packed));
2369
2370 static int
2371 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2372                    u32 legacy_rate_mask, u8 *mcs_rates)
2373 {
2374         struct mwl8k_cmd_set_rate *cmd;
2375         int rc;
2376
2377         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2378         if (cmd == NULL)
2379                 return -ENOMEM;
2380
2381         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2382         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2383         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2384         memcpy(cmd->mcs_set, mcs_rates, 16);
2385
2386         rc = mwl8k_post_cmd(hw, &cmd->header);
2387         kfree(cmd);
2388
2389         return rc;
2390 }
2391
2392 /*
2393  * CMD_FINALIZE_JOIN.
2394  */
2395 #define MWL8K_FJ_BEACON_MAXLEN  128
2396
2397 struct mwl8k_cmd_finalize_join {
2398         struct mwl8k_cmd_pkt header;
2399         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2400         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2401 } __attribute__((packed));
2402
2403 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2404                                    int framelen, int dtim)
2405 {
2406         struct mwl8k_cmd_finalize_join *cmd;
2407         struct ieee80211_mgmt *payload = frame;
2408         int payload_len;
2409         int rc;
2410
2411         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2412         if (cmd == NULL)
2413                 return -ENOMEM;
2414
2415         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2416         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2417         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2418
2419         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2420         if (payload_len < 0)
2421                 payload_len = 0;
2422         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2423                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2424
2425         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2426
2427         rc = mwl8k_post_cmd(hw, &cmd->header);
2428         kfree(cmd);
2429
2430         return rc;
2431 }
2432
2433 /*
2434  * CMD_SET_RTS_THRESHOLD.
2435  */
2436 struct mwl8k_cmd_set_rts_threshold {
2437         struct mwl8k_cmd_pkt header;
2438         __le16 action;
2439         __le16 threshold;
2440 } __attribute__((packed));
2441
2442 static int
2443 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2444 {
2445         struct mwl8k_cmd_set_rts_threshold *cmd;
2446         int rc;
2447
2448         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2449         if (cmd == NULL)
2450                 return -ENOMEM;
2451
2452         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2453         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2454         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2455         cmd->threshold = cpu_to_le16(rts_thresh);
2456
2457         rc = mwl8k_post_cmd(hw, &cmd->header);
2458         kfree(cmd);
2459
2460         return rc;
2461 }
2462
2463 /*
2464  * CMD_SET_SLOT.
2465  */
2466 struct mwl8k_cmd_set_slot {
2467         struct mwl8k_cmd_pkt header;
2468         __le16 action;
2469         __u8 short_slot;
2470 } __attribute__((packed));
2471
2472 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2473 {
2474         struct mwl8k_cmd_set_slot *cmd;
2475         int rc;
2476
2477         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2478         if (cmd == NULL)
2479                 return -ENOMEM;
2480
2481         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2482         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2483         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2484         cmd->short_slot = short_slot_time;
2485
2486         rc = mwl8k_post_cmd(hw, &cmd->header);
2487         kfree(cmd);
2488
2489         return rc;
2490 }
2491
2492 /*
2493  * CMD_SET_EDCA_PARAMS.
2494  */
2495 struct mwl8k_cmd_set_edca_params {
2496         struct mwl8k_cmd_pkt header;
2497
2498         /* See MWL8K_SET_EDCA_XXX below */
2499         __le16 action;
2500
2501         /* TX opportunity in units of 32 us */
2502         __le16 txop;
2503
2504         union {
2505                 struct {
2506                         /* Log exponent of max contention period: 0...15 */
2507                         __le32 log_cw_max;
2508
2509                         /* Log exponent of min contention period: 0...15 */
2510                         __le32 log_cw_min;
2511
2512                         /* Adaptive interframe spacing in units of 32us */
2513                         __u8 aifs;
2514
2515                         /* TX queue to configure */
2516                         __u8 txq;
2517                 } ap;
2518                 struct {
2519                         /* Log exponent of max contention period: 0...15 */
2520                         __u8 log_cw_max;
2521
2522                         /* Log exponent of min contention period: 0...15 */
2523                         __u8 log_cw_min;
2524
2525                         /* Adaptive interframe spacing in units of 32us */
2526                         __u8 aifs;
2527
2528                         /* TX queue to configure */
2529                         __u8 txq;
2530                 } sta;
2531         };
2532 } __attribute__((packed));
2533
2534 #define MWL8K_SET_EDCA_CW       0x01
2535 #define MWL8K_SET_EDCA_TXOP     0x02
2536 #define MWL8K_SET_EDCA_AIFS     0x04
2537
2538 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2539                                  MWL8K_SET_EDCA_TXOP | \
2540                                  MWL8K_SET_EDCA_AIFS)
2541
2542 static int
2543 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2544                           __u16 cw_min, __u16 cw_max,
2545                           __u8 aifs, __u16 txop)
2546 {
2547         struct mwl8k_priv *priv = hw->priv;
2548         struct mwl8k_cmd_set_edca_params *cmd;
2549         int rc;
2550
2551         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2552         if (cmd == NULL)
2553                 return -ENOMEM;
2554
2555         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2556         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2557         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2558         cmd->txop = cpu_to_le16(txop);
2559         if (priv->ap_fw) {
2560                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2561                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2562                 cmd->ap.aifs = aifs;
2563                 cmd->ap.txq = qnum;
2564         } else {
2565                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2566                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2567                 cmd->sta.aifs = aifs;
2568                 cmd->sta.txq = qnum;
2569         }
2570
2571         rc = mwl8k_post_cmd(hw, &cmd->header);
2572         kfree(cmd);
2573
2574         return rc;
2575 }
2576
2577 /*
2578  * CMD_SET_WMM_MODE.
2579  */
2580 struct mwl8k_cmd_set_wmm_mode {
2581         struct mwl8k_cmd_pkt header;
2582         __le16 action;
2583 } __attribute__((packed));
2584
2585 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2586 {
2587         struct mwl8k_priv *priv = hw->priv;
2588         struct mwl8k_cmd_set_wmm_mode *cmd;
2589         int rc;
2590
2591         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2592         if (cmd == NULL)
2593                 return -ENOMEM;
2594
2595         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2596         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2597         cmd->action = cpu_to_le16(!!enable);
2598
2599         rc = mwl8k_post_cmd(hw, &cmd->header);
2600         kfree(cmd);
2601
2602         if (!rc)
2603                 priv->wmm_enabled = enable;
2604
2605         return rc;
2606 }
2607
2608 /*
2609  * CMD_MIMO_CONFIG.
2610  */
2611 struct mwl8k_cmd_mimo_config {
2612         struct mwl8k_cmd_pkt header;
2613         __le32 action;
2614         __u8 rx_antenna_map;
2615         __u8 tx_antenna_map;
2616 } __attribute__((packed));
2617
2618 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2619 {
2620         struct mwl8k_cmd_mimo_config *cmd;
2621         int rc;
2622
2623         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2624         if (cmd == NULL)
2625                 return -ENOMEM;
2626
2627         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2628         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2629         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2630         cmd->rx_antenna_map = rx;
2631         cmd->tx_antenna_map = tx;
2632
2633         rc = mwl8k_post_cmd(hw, &cmd->header);
2634         kfree(cmd);
2635
2636         return rc;
2637 }
2638
2639 /*
2640  * CMD_USE_FIXED_RATE (STA version).
2641  */
2642 struct mwl8k_cmd_use_fixed_rate_sta {
2643         struct mwl8k_cmd_pkt header;
2644         __le32 action;
2645         __le32 allow_rate_drop;
2646         __le32 num_rates;
2647         struct {
2648                 __le32 is_ht_rate;
2649                 __le32 enable_retry;
2650                 __le32 rate;
2651                 __le32 retry_count;
2652         } rate_entry[8];
2653         __le32 rate_type;
2654         __le32 reserved1;
2655         __le32 reserved2;
2656 } __attribute__((packed));
2657
2658 #define MWL8K_USE_AUTO_RATE     0x0002
2659 #define MWL8K_UCAST_RATE        0
2660
2661 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2662 {
2663         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2664         int rc;
2665
2666         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2667         if (cmd == NULL)
2668                 return -ENOMEM;
2669
2670         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2671         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2672         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2673         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2674
2675         rc = mwl8k_post_cmd(hw, &cmd->header);
2676         kfree(cmd);
2677
2678         return rc;
2679 }
2680
2681 /*
2682  * CMD_USE_FIXED_RATE (AP version).
2683  */
2684 struct mwl8k_cmd_use_fixed_rate_ap {
2685         struct mwl8k_cmd_pkt header;
2686         __le32 action;
2687         __le32 allow_rate_drop;
2688         __le32 num_rates;
2689         struct mwl8k_rate_entry_ap {
2690                 __le32 is_ht_rate;
2691                 __le32 enable_retry;
2692                 __le32 rate;
2693                 __le32 retry_count;
2694         } rate_entry[4];
2695         u8 multicast_rate;
2696         u8 multicast_rate_type;
2697         u8 management_rate;
2698 } __attribute__((packed));
2699
2700 static int
2701 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2702 {
2703         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2704         int rc;
2705
2706         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2707         if (cmd == NULL)
2708                 return -ENOMEM;
2709
2710         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2711         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2712         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2713         cmd->multicast_rate = mcast;
2714         cmd->management_rate = mgmt;
2715
2716         rc = mwl8k_post_cmd(hw, &cmd->header);
2717         kfree(cmd);
2718
2719         return rc;
2720 }
2721
2722 /*
2723  * CMD_ENABLE_SNIFFER.
2724  */
2725 struct mwl8k_cmd_enable_sniffer {
2726         struct mwl8k_cmd_pkt header;
2727         __le32 action;
2728 } __attribute__((packed));
2729
2730 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2731 {
2732         struct mwl8k_cmd_enable_sniffer *cmd;
2733         int rc;
2734
2735         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2736         if (cmd == NULL)
2737                 return -ENOMEM;
2738
2739         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2740         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2741         cmd->action = cpu_to_le32(!!enable);
2742
2743         rc = mwl8k_post_cmd(hw, &cmd->header);
2744         kfree(cmd);
2745
2746         return rc;
2747 }
2748
2749 /*
2750  * CMD_SET_MAC_ADDR.
2751  */
2752 struct mwl8k_cmd_set_mac_addr {
2753         struct mwl8k_cmd_pkt header;
2754         union {
2755                 struct {
2756                         __le16 mac_type;
2757                         __u8 mac_addr[ETH_ALEN];
2758                 } mbss;
2759                 __u8 mac_addr[ETH_ALEN];
2760         };
2761 } __attribute__((packed));
2762
2763 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
2764 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
2765 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
2766 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
2767
2768 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
2769                                   struct ieee80211_vif *vif, u8 *mac)
2770 {
2771         struct mwl8k_priv *priv = hw->priv;
2772         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2773         struct mwl8k_cmd_set_mac_addr *cmd;
2774         int mac_type;
2775         int rc;
2776
2777         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2778         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
2779                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
2780                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
2781                 else
2782                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
2783         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
2784                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
2785                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2786                 else
2787                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
2788         }
2789
2790         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2791         if (cmd == NULL)
2792                 return -ENOMEM;
2793
2794         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2795         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2796         if (priv->ap_fw) {
2797                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
2798                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2799         } else {
2800                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2801         }
2802
2803         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2804         kfree(cmd);
2805
2806         return rc;
2807 }
2808
2809 /*
2810  * CMD_SET_RATEADAPT_MODE.
2811  */
2812 struct mwl8k_cmd_set_rate_adapt_mode {
2813         struct mwl8k_cmd_pkt header;
2814         __le16 action;
2815         __le16 mode;
2816 } __attribute__((packed));
2817
2818 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2819 {
2820         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2821         int rc;
2822
2823         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2824         if (cmd == NULL)
2825                 return -ENOMEM;
2826
2827         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2828         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2829         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2830         cmd->mode = cpu_to_le16(mode);
2831
2832         rc = mwl8k_post_cmd(hw, &cmd->header);
2833         kfree(cmd);
2834
2835         return rc;
2836 }
2837
2838 /*
2839  * CMD_BSS_START.
2840  */
2841 struct mwl8k_cmd_bss_start {
2842         struct mwl8k_cmd_pkt header;
2843         __le32 enable;
2844 } __attribute__((packed));
2845
2846 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
2847                                struct ieee80211_vif *vif, int enable)
2848 {
2849         struct mwl8k_cmd_bss_start *cmd;
2850         int rc;
2851
2852         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2853         if (cmd == NULL)
2854                 return -ENOMEM;
2855
2856         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
2857         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2858         cmd->enable = cpu_to_le32(enable);
2859
2860         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2861         kfree(cmd);
2862
2863         return rc;
2864 }
2865
2866 /*
2867  * CMD_SET_NEW_STN.
2868  */
2869 struct mwl8k_cmd_set_new_stn {
2870         struct mwl8k_cmd_pkt header;
2871         __le16 aid;
2872         __u8 mac_addr[6];
2873         __le16 stn_id;
2874         __le16 action;
2875         __le16 rsvd;
2876         __le32 legacy_rates;
2877         __u8 ht_rates[4];
2878         __le16 cap_info;
2879         __le16 ht_capabilities_info;
2880         __u8 mac_ht_param_info;
2881         __u8 rev;
2882         __u8 control_channel;
2883         __u8 add_channel;
2884         __le16 op_mode;
2885         __le16 stbc;
2886         __u8 add_qos_info;
2887         __u8 is_qos_sta;
2888         __le32 fw_sta_ptr;
2889 } __attribute__((packed));
2890
2891 #define MWL8K_STA_ACTION_ADD            0
2892 #define MWL8K_STA_ACTION_REMOVE         2
2893
2894 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
2895                                      struct ieee80211_vif *vif,
2896                                      struct ieee80211_sta *sta)
2897 {
2898         struct mwl8k_cmd_set_new_stn *cmd;
2899         u32 rates;
2900         int rc;
2901
2902         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2903         if (cmd == NULL)
2904                 return -ENOMEM;
2905
2906         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2907         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2908         cmd->aid = cpu_to_le16(sta->aid);
2909         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
2910         cmd->stn_id = cpu_to_le16(sta->aid);
2911         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
2912         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
2913                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
2914         else
2915                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
2916         cmd->legacy_rates = cpu_to_le32(rates);
2917         if (sta->ht_cap.ht_supported) {
2918                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
2919                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
2920                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
2921                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
2922                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
2923                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
2924                         ((sta->ht_cap.ampdu_density & 7) << 2);
2925                 cmd->is_qos_sta = 1;
2926         }
2927
2928         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2929         kfree(cmd);
2930
2931         return rc;
2932 }
2933
2934 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
2935                                           struct ieee80211_vif *vif)
2936 {
2937         struct mwl8k_cmd_set_new_stn *cmd;
2938         int rc;
2939
2940         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2941         if (cmd == NULL)
2942                 return -ENOMEM;
2943
2944         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2945         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2946         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
2947
2948         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2949         kfree(cmd);
2950
2951         return rc;
2952 }
2953
2954 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
2955                                      struct ieee80211_vif *vif, u8 *addr)
2956 {
2957         struct mwl8k_cmd_set_new_stn *cmd;
2958         int rc;
2959
2960         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2961         if (cmd == NULL)
2962                 return -ENOMEM;
2963
2964         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2965         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2966         memcpy(cmd->mac_addr, addr, ETH_ALEN);
2967         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
2968
2969         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2970         kfree(cmd);
2971
2972         return rc;
2973 }
2974
2975 /*
2976  * CMD_UPDATE_STADB.
2977  */
2978 struct ewc_ht_info {
2979         __le16  control1;
2980         __le16  control2;
2981         __le16  control3;
2982 } __attribute__((packed));
2983
2984 struct peer_capability_info {
2985         /* Peer type - AP vs. STA.  */
2986         __u8    peer_type;
2987
2988         /* Basic 802.11 capabilities from assoc resp.  */
2989         __le16  basic_caps;
2990
2991         /* Set if peer supports 802.11n high throughput (HT).  */
2992         __u8    ht_support;
2993
2994         /* Valid if HT is supported.  */
2995         __le16  ht_caps;
2996         __u8    extended_ht_caps;
2997         struct ewc_ht_info      ewc_info;
2998
2999         /* Legacy rate table. Intersection of our rates and peer rates.  */
3000         __u8    legacy_rates[12];
3001
3002         /* HT rate table. Intersection of our rates and peer rates.  */
3003         __u8    ht_rates[16];
3004         __u8    pad[16];
3005
3006         /* If set, interoperability mode, no proprietary extensions.  */
3007         __u8    interop;
3008         __u8    pad2;
3009         __u8    station_id;
3010         __le16  amsdu_enabled;
3011 } __attribute__((packed));
3012
3013 struct mwl8k_cmd_update_stadb {
3014         struct mwl8k_cmd_pkt header;
3015
3016         /* See STADB_ACTION_TYPE */
3017         __le32  action;
3018
3019         /* Peer MAC address */
3020         __u8    peer_addr[ETH_ALEN];
3021
3022         __le32  reserved;
3023
3024         /* Peer info - valid during add/update.  */
3025         struct peer_capability_info     peer_info;
3026 } __attribute__((packed));
3027
3028 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3029 #define MWL8K_STA_DB_DEL_ENTRY          2
3030
3031 /* Peer Entry flags - used to define the type of the peer node */
3032 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3033
3034 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3035                                       struct ieee80211_vif *vif,
3036                                       struct ieee80211_sta *sta)
3037 {
3038         struct mwl8k_cmd_update_stadb *cmd;
3039         struct peer_capability_info *p;
3040         u32 rates;
3041         int rc;
3042
3043         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3044         if (cmd == NULL)
3045                 return -ENOMEM;
3046
3047         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3048         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3049         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3050         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3051
3052         p = &cmd->peer_info;
3053         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3054         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3055         p->ht_support = sta->ht_cap.ht_supported;
3056         p->ht_caps = sta->ht_cap.cap;
3057         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3058                 ((sta->ht_cap.ampdu_density & 7) << 2);
3059         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3060                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3061         else
3062                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3063         legacy_rate_mask_to_array(p->legacy_rates, rates);
3064         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3065         p->interop = 1;
3066         p->amsdu_enabled = 0;
3067
3068         rc = mwl8k_post_cmd(hw, &cmd->header);
3069         kfree(cmd);
3070
3071         return rc ? rc : p->station_id;
3072 }
3073
3074 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3075                                       struct ieee80211_vif *vif, u8 *addr)
3076 {
3077         struct mwl8k_cmd_update_stadb *cmd;
3078         int rc;
3079
3080         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3081         if (cmd == NULL)
3082                 return -ENOMEM;
3083
3084         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3085         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3086         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3087         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3088
3089         rc = mwl8k_post_cmd(hw, &cmd->header);
3090         kfree(cmd);
3091
3092         return rc;
3093 }
3094
3095
3096 /*
3097  * Interrupt handling.
3098  */
3099 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3100 {
3101         struct ieee80211_hw *hw = dev_id;
3102         struct mwl8k_priv *priv = hw->priv;
3103         u32 status;
3104
3105         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3106         if (!status)
3107                 return IRQ_NONE;
3108
3109         if (status & MWL8K_A2H_INT_TX_DONE) {
3110                 status &= ~MWL8K_A2H_INT_TX_DONE;
3111                 tasklet_schedule(&priv->poll_tx_task);
3112         }
3113
3114         if (status & MWL8K_A2H_INT_RX_READY) {
3115                 status &= ~MWL8K_A2H_INT_RX_READY;
3116                 tasklet_schedule(&priv->poll_rx_task);
3117         }
3118
3119         if (status)
3120                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3121
3122         if (status & MWL8K_A2H_INT_OPC_DONE) {
3123                 if (priv->hostcmd_wait != NULL)
3124                         complete(priv->hostcmd_wait);
3125         }
3126
3127         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3128                 if (!mutex_is_locked(&priv->fw_mutex) &&
3129                     priv->radio_on && priv->pending_tx_pkts)
3130                         mwl8k_tx_start(priv);
3131         }
3132
3133         return IRQ_HANDLED;
3134 }
3135
3136 static void mwl8k_tx_poll(unsigned long data)
3137 {
3138         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3139         struct mwl8k_priv *priv = hw->priv;
3140         int limit;
3141         int i;
3142
3143         limit = 32;
3144
3145         spin_lock_bh(&priv->tx_lock);
3146
3147         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3148                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3149
3150         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3151                 complete(priv->tx_wait);
3152                 priv->tx_wait = NULL;
3153         }
3154
3155         spin_unlock_bh(&priv->tx_lock);
3156
3157         if (limit) {
3158                 writel(~MWL8K_A2H_INT_TX_DONE,
3159                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3160         } else {
3161                 tasklet_schedule(&priv->poll_tx_task);
3162         }
3163 }
3164
3165 static void mwl8k_rx_poll(unsigned long data)
3166 {
3167         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3168         struct mwl8k_priv *priv = hw->priv;
3169         int limit;
3170
3171         limit = 32;
3172         limit -= rxq_process(hw, 0, limit);
3173         limit -= rxq_refill(hw, 0, limit);
3174
3175         if (limit) {
3176                 writel(~MWL8K_A2H_INT_RX_READY,
3177                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3178         } else {
3179                 tasklet_schedule(&priv->poll_rx_task);
3180         }
3181 }
3182
3183
3184 /*
3185  * Core driver operations.
3186  */
3187 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3188 {
3189         struct mwl8k_priv *priv = hw->priv;
3190         int index = skb_get_queue_mapping(skb);
3191         int rc;
3192
3193         if (!priv->radio_on) {
3194                 printk(KERN_DEBUG "%s: dropped TX frame since radio "
3195                        "disabled\n", wiphy_name(hw->wiphy));
3196                 dev_kfree_skb(skb);
3197                 return NETDEV_TX_OK;
3198         }
3199
3200         rc = mwl8k_txq_xmit(hw, index, skb);
3201
3202         return rc;
3203 }
3204
3205 static int mwl8k_start(struct ieee80211_hw *hw)
3206 {
3207         struct mwl8k_priv *priv = hw->priv;
3208         int rc;
3209
3210         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3211                          IRQF_SHARED, MWL8K_NAME, hw);
3212         if (rc) {
3213                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
3214                        wiphy_name(hw->wiphy));
3215                 return -EIO;
3216         }
3217
3218         /* Enable TX reclaim and RX tasklets.  */
3219         tasklet_enable(&priv->poll_tx_task);
3220         tasklet_enable(&priv->poll_rx_task);
3221
3222         /* Enable interrupts */
3223         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3224
3225         rc = mwl8k_fw_lock(hw);
3226         if (!rc) {
3227                 rc = mwl8k_cmd_radio_enable(hw);
3228
3229                 if (!priv->ap_fw) {
3230                         if (!rc)
3231                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3232
3233                         if (!rc)
3234                                 rc = mwl8k_cmd_set_pre_scan(hw);
3235
3236                         if (!rc)
3237                                 rc = mwl8k_cmd_set_post_scan(hw,
3238                                                 "\x00\x00\x00\x00\x00\x00");
3239                 }
3240
3241                 if (!rc)
3242                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3243
3244                 if (!rc)
3245                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3246
3247                 mwl8k_fw_unlock(hw);
3248         }
3249
3250         if (rc) {
3251                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3252                 free_irq(priv->pdev->irq, hw);
3253                 tasklet_disable(&priv->poll_tx_task);
3254                 tasklet_disable(&priv->poll_rx_task);
3255         }
3256
3257         return rc;
3258 }
3259
3260 static void mwl8k_stop(struct ieee80211_hw *hw)
3261 {
3262         struct mwl8k_priv *priv = hw->priv;
3263         int i;
3264
3265         mwl8k_cmd_radio_disable(hw);
3266
3267         ieee80211_stop_queues(hw);
3268
3269         /* Disable interrupts */
3270         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3271         free_irq(priv->pdev->irq, hw);
3272
3273         /* Stop finalize join worker */
3274         cancel_work_sync(&priv->finalize_join_worker);
3275         if (priv->beacon_skb != NULL)
3276                 dev_kfree_skb(priv->beacon_skb);
3277
3278         /* Stop TX reclaim and RX tasklets.  */
3279         tasklet_disable(&priv->poll_tx_task);
3280         tasklet_disable(&priv->poll_rx_task);
3281
3282         /* Return all skbs to mac80211 */
3283         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3284                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3285 }
3286
3287 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3288                                struct ieee80211_vif *vif)
3289 {
3290         struct mwl8k_priv *priv = hw->priv;
3291         struct mwl8k_vif *mwl8k_vif;
3292         u32 macids_supported;
3293         int macid;
3294
3295         /*
3296          * Reject interface creation if sniffer mode is active, as
3297          * STA operation is mutually exclusive with hardware sniffer
3298          * mode.  (Sniffer mode is only used on STA firmware.)
3299          */
3300         if (priv->sniffer_enabled) {
3301                 printk(KERN_INFO "%s: unable to create STA "
3302                        "interface due to sniffer mode being enabled\n",
3303                        wiphy_name(hw->wiphy));
3304                 return -EINVAL;
3305         }
3306
3307
3308         switch (vif->type) {
3309         case NL80211_IFTYPE_AP:
3310                 macids_supported = priv->ap_macids_supported;
3311                 break;
3312         case NL80211_IFTYPE_STATION:
3313                 macids_supported = priv->sta_macids_supported;
3314                 break;
3315         default:
3316                 return -EINVAL;
3317         }
3318
3319         macid = ffs(macids_supported & ~priv->macids_used);
3320         if (!macid--)
3321                 return -EBUSY;
3322
3323         /* Setup driver private area. */
3324         mwl8k_vif = MWL8K_VIF(vif);
3325         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3326         mwl8k_vif->vif = vif;
3327         mwl8k_vif->macid = macid;
3328         mwl8k_vif->seqno = 0;
3329
3330         /* Set the mac address.  */
3331         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3332
3333         if (priv->ap_fw)
3334                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3335
3336         priv->macids_used |= 1 << mwl8k_vif->macid;
3337         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3338
3339         return 0;
3340 }
3341
3342 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3343                                    struct ieee80211_vif *vif)
3344 {
3345         struct mwl8k_priv *priv = hw->priv;
3346         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3347
3348         if (priv->ap_fw)
3349                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3350
3351         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3352
3353         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3354         list_del(&mwl8k_vif->list);
3355 }
3356
3357 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3358 {
3359         struct ieee80211_conf *conf = &hw->conf;
3360         struct mwl8k_priv *priv = hw->priv;
3361         int rc;
3362
3363         if (conf->flags & IEEE80211_CONF_IDLE) {
3364                 mwl8k_cmd_radio_disable(hw);
3365                 return 0;
3366         }
3367
3368         rc = mwl8k_fw_lock(hw);
3369         if (rc)
3370                 return rc;
3371
3372         rc = mwl8k_cmd_radio_enable(hw);
3373         if (rc)
3374                 goto out;
3375
3376         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3377         if (rc)
3378                 goto out;
3379
3380         if (conf->power_level > 18)
3381                 conf->power_level = 18;
3382         rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3383         if (rc)
3384                 goto out;
3385
3386         if (priv->ap_fw) {
3387                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3388                 if (!rc)
3389                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3390         } else {
3391                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3392         }
3393
3394 out:
3395         mwl8k_fw_unlock(hw);
3396
3397         return rc;
3398 }
3399
3400 static void
3401 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3402                            struct ieee80211_bss_conf *info, u32 changed)
3403 {
3404         struct mwl8k_priv *priv = hw->priv;
3405         u32 ap_legacy_rates;
3406         u8 ap_mcs_rates[16];
3407         int rc;
3408
3409         if (mwl8k_fw_lock(hw))
3410                 return;
3411
3412         /*
3413          * No need to capture a beacon if we're no longer associated.
3414          */
3415         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3416                 priv->capture_beacon = false;
3417
3418         /*
3419          * Get the AP's legacy and MCS rates.
3420          */
3421         if (vif->bss_conf.assoc) {
3422                 struct ieee80211_sta *ap;
3423
3424                 rcu_read_lock();
3425
3426                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3427                 if (ap == NULL) {
3428                         rcu_read_unlock();
3429                         goto out;
3430                 }
3431
3432                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3433                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3434                 } else {
3435                         ap_legacy_rates =
3436                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3437                 }
3438                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3439
3440                 rcu_read_unlock();
3441         }
3442
3443         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3444                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3445                 if (rc)
3446                         goto out;
3447
3448                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
3449                 if (rc)
3450                         goto out;
3451         }
3452
3453         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3454                 rc = mwl8k_set_radio_preamble(hw,
3455                                 vif->bss_conf.use_short_preamble);
3456                 if (rc)
3457                         goto out;
3458         }
3459
3460         if (changed & BSS_CHANGED_ERP_SLOT) {
3461                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3462                 if (rc)
3463                         goto out;
3464         }
3465
3466         if (vif->bss_conf.assoc &&
3467             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
3468                         BSS_CHANGED_HT))) {
3469                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3470                 if (rc)
3471                         goto out;
3472         }
3473
3474         if (vif->bss_conf.assoc &&
3475             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3476                 /*
3477                  * Finalize the join.  Tell rx handler to process
3478                  * next beacon from our BSSID.
3479                  */
3480                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3481                 priv->capture_beacon = true;
3482         }
3483
3484 out:
3485         mwl8k_fw_unlock(hw);
3486 }
3487
3488 static void
3489 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3490                           struct ieee80211_bss_conf *info, u32 changed)
3491 {
3492         int rc;
3493
3494         if (mwl8k_fw_lock(hw))
3495                 return;
3496
3497         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3498                 rc = mwl8k_set_radio_preamble(hw,
3499                                 vif->bss_conf.use_short_preamble);
3500                 if (rc)
3501                         goto out;
3502         }
3503
3504         if (changed & BSS_CHANGED_BASIC_RATES) {
3505                 int idx;
3506                 int rate;
3507
3508                 /*
3509                  * Use lowest supported basic rate for multicasts
3510                  * and management frames (such as probe responses --
3511                  * beacons will always go out at 1 Mb/s).
3512                  */
3513                 idx = ffs(vif->bss_conf.basic_rates);
3514                 if (idx)
3515                         idx--;
3516
3517                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3518                         rate = mwl8k_rates_24[idx].hw_value;
3519                 else
3520                         rate = mwl8k_rates_50[idx].hw_value;
3521
3522                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
3523         }
3524
3525         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
3526                 struct sk_buff *skb;
3527
3528                 skb = ieee80211_beacon_get(hw, vif);
3529                 if (skb != NULL) {
3530                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
3531                         kfree_skb(skb);
3532                 }
3533         }
3534
3535         if (changed & BSS_CHANGED_BEACON_ENABLED)
3536                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
3537
3538 out:
3539         mwl8k_fw_unlock(hw);
3540 }
3541
3542 static void
3543 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3544                        struct ieee80211_bss_conf *info, u32 changed)
3545 {
3546         struct mwl8k_priv *priv = hw->priv;
3547
3548         if (!priv->ap_fw)
3549                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
3550         else
3551                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
3552 }
3553
3554 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3555                                    int mc_count, struct dev_addr_list *mclist)
3556 {
3557         struct mwl8k_cmd_pkt *cmd;
3558
3559         /*
3560          * Synthesize and return a command packet that programs the
3561          * hardware multicast address filter.  At this point we don't
3562          * know whether FIF_ALLMULTI is being requested, but if it is,
3563          * we'll end up throwing this packet away and creating a new
3564          * one in mwl8k_configure_filter().
3565          */
3566         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_count, mclist);
3567
3568         return (unsigned long)cmd;
3569 }
3570
3571 static int
3572 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3573                                unsigned int changed_flags,
3574                                unsigned int *total_flags)
3575 {
3576         struct mwl8k_priv *priv = hw->priv;
3577
3578         /*
3579          * Hardware sniffer mode is mutually exclusive with STA
3580          * operation, so refuse to enable sniffer mode if a STA
3581          * interface is active.
3582          */
3583         if (!list_empty(&priv->vif_list)) {
3584                 if (net_ratelimit())
3585                         printk(KERN_INFO "%s: not enabling sniffer "
3586                                "mode because STA interface is active\n",
3587                                wiphy_name(hw->wiphy));
3588                 return 0;
3589         }
3590
3591         if (!priv->sniffer_enabled) {
3592                 if (mwl8k_cmd_enable_sniffer(hw, 1))
3593                         return 0;
3594                 priv->sniffer_enabled = true;
3595         }
3596
3597         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3598                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3599                         FIF_OTHER_BSS;
3600
3601         return 1;
3602 }
3603
3604 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
3605 {
3606         if (!list_empty(&priv->vif_list))
3607                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
3608
3609         return NULL;
3610 }
3611
3612 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3613                                    unsigned int changed_flags,
3614                                    unsigned int *total_flags,
3615                                    u64 multicast)
3616 {
3617         struct mwl8k_priv *priv = hw->priv;
3618         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3619
3620         /*
3621          * AP firmware doesn't allow fine-grained control over
3622          * the receive filter.
3623          */
3624         if (priv->ap_fw) {
3625                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3626                 kfree(cmd);
3627                 return;
3628         }
3629
3630         /*
3631          * Enable hardware sniffer mode if FIF_CONTROL or
3632          * FIF_OTHER_BSS is requested.
3633          */
3634         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3635             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3636                 kfree(cmd);
3637                 return;
3638         }
3639
3640         /* Clear unsupported feature flags */
3641         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3642
3643         if (mwl8k_fw_lock(hw)) {
3644                 kfree(cmd);
3645                 return;
3646         }
3647
3648         if (priv->sniffer_enabled) {
3649                 mwl8k_cmd_enable_sniffer(hw, 0);
3650                 priv->sniffer_enabled = false;
3651         }
3652
3653         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3654                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3655                         /*
3656                          * Disable the BSS filter.
3657                          */
3658                         mwl8k_cmd_set_pre_scan(hw);
3659                 } else {
3660                         struct mwl8k_vif *mwl8k_vif;
3661                         const u8 *bssid;
3662
3663                         /*
3664                          * Enable the BSS filter.
3665                          *
3666                          * If there is an active STA interface, use that
3667                          * interface's BSSID, otherwise use a dummy one
3668                          * (where the OUI part needs to be nonzero for
3669                          * the BSSID to be accepted by POST_SCAN).
3670                          */
3671                         mwl8k_vif = mwl8k_first_vif(priv);
3672                         if (mwl8k_vif != NULL)
3673                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
3674                         else
3675                                 bssid = "\x01\x00\x00\x00\x00\x00";
3676
3677                         mwl8k_cmd_set_post_scan(hw, bssid);
3678                 }
3679         }
3680
3681         /*
3682          * If FIF_ALLMULTI is being requested, throw away the command
3683          * packet that ->prepare_multicast() built and replace it with
3684          * a command packet that enables reception of all multicast
3685          * packets.
3686          */
3687         if (*total_flags & FIF_ALLMULTI) {
3688                 kfree(cmd);
3689                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, 0, NULL);
3690         }
3691
3692         if (cmd != NULL) {
3693                 mwl8k_post_cmd(hw, cmd);
3694                 kfree(cmd);
3695         }
3696
3697         mwl8k_fw_unlock(hw);
3698 }
3699
3700 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3701 {
3702         return mwl8k_cmd_set_rts_threshold(hw, value);
3703 }
3704
3705 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
3706                             struct ieee80211_vif *vif,
3707                             struct ieee80211_sta *sta)
3708 {
3709         struct mwl8k_priv *priv = hw->priv;
3710
3711         if (priv->ap_fw)
3712                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
3713         else
3714                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
3715 }
3716
3717 static int mwl8k_sta_add(struct ieee80211_hw *hw,
3718                          struct ieee80211_vif *vif,
3719                          struct ieee80211_sta *sta)
3720 {
3721         struct mwl8k_priv *priv = hw->priv;
3722         int ret;
3723
3724         if (!priv->ap_fw) {
3725                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
3726                 if (ret >= 0) {
3727                         MWL8K_STA(sta)->peer_id = ret;
3728                         return 0;
3729                 }
3730
3731                 return ret;
3732         }
3733
3734         return mwl8k_cmd_set_new_stn_add(hw, vif, sta);
3735 }
3736
3737 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3738                          const struct ieee80211_tx_queue_params *params)
3739 {
3740         struct mwl8k_priv *priv = hw->priv;
3741         int rc;
3742
3743         rc = mwl8k_fw_lock(hw);
3744         if (!rc) {
3745                 if (!priv->wmm_enabled)
3746                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3747
3748                 if (!rc)
3749                         rc = mwl8k_cmd_set_edca_params(hw, queue,
3750                                                        params->cw_min,
3751                                                        params->cw_max,
3752                                                        params->aifs,
3753                                                        params->txop);
3754
3755                 mwl8k_fw_unlock(hw);
3756         }
3757
3758         return rc;
3759 }
3760
3761 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3762                            struct ieee80211_low_level_stats *stats)
3763 {
3764         return mwl8k_cmd_get_stat(hw, stats);
3765 }
3766
3767 static int
3768 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3769                    enum ieee80211_ampdu_mlme_action action,
3770                    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3771 {
3772         switch (action) {
3773         case IEEE80211_AMPDU_RX_START:
3774         case IEEE80211_AMPDU_RX_STOP:
3775                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
3776                         return -ENOTSUPP;
3777                 return 0;
3778         default:
3779                 return -ENOTSUPP;
3780         }
3781 }
3782
3783 static const struct ieee80211_ops mwl8k_ops = {
3784         .tx                     = mwl8k_tx,
3785         .start                  = mwl8k_start,
3786         .stop                   = mwl8k_stop,
3787         .add_interface          = mwl8k_add_interface,
3788         .remove_interface       = mwl8k_remove_interface,
3789         .config                 = mwl8k_config,
3790         .bss_info_changed       = mwl8k_bss_info_changed,
3791         .prepare_multicast      = mwl8k_prepare_multicast,
3792         .configure_filter       = mwl8k_configure_filter,
3793         .set_rts_threshold      = mwl8k_set_rts_threshold,
3794         .sta_add                = mwl8k_sta_add,
3795         .sta_remove             = mwl8k_sta_remove,
3796         .conf_tx                = mwl8k_conf_tx,
3797         .get_stats              = mwl8k_get_stats,
3798         .ampdu_action           = mwl8k_ampdu_action,
3799 };
3800
3801 static void mwl8k_finalize_join_worker(struct work_struct *work)
3802 {
3803         struct mwl8k_priv *priv =
3804                 container_of(work, struct mwl8k_priv, finalize_join_worker);
3805         struct sk_buff *skb = priv->beacon_skb;
3806         struct ieee80211_mgmt *mgmt = (void *)skb->data;
3807         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
3808         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
3809                                          mgmt->u.beacon.variable, len);
3810         int dtim_period = 1;
3811
3812         if (tim && tim[1] >= 2)
3813                 dtim_period = tim[3];
3814
3815         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
3816
3817         dev_kfree_skb(skb);
3818         priv->beacon_skb = NULL;
3819 }
3820
3821 enum {
3822         MWL8363 = 0,
3823         MWL8687,
3824         MWL8366,
3825 };
3826
3827 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3828         [MWL8363] = {
3829                 .part_name      = "88w8363",
3830                 .helper_image   = "mwl8k/helper_8363.fw",
3831                 .fw_image       = "mwl8k/fmimage_8363.fw",
3832         },
3833         [MWL8687] = {
3834                 .part_name      = "88w8687",
3835                 .helper_image   = "mwl8k/helper_8687.fw",
3836                 .fw_image       = "mwl8k/fmimage_8687.fw",
3837         },
3838         [MWL8366] = {
3839                 .part_name      = "88w8366",
3840                 .helper_image   = "mwl8k/helper_8366.fw",
3841                 .fw_image       = "mwl8k/fmimage_8366.fw",
3842                 .ap_rxd_ops     = &rxd_8366_ap_ops,
3843         },
3844 };
3845
3846 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
3847 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
3848 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
3849 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
3850 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
3851 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
3852
3853 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3854         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
3855         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
3856         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
3857         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
3858         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
3859         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
3860         { },
3861 };
3862 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
3863
3864 static int __devinit mwl8k_probe(struct pci_dev *pdev,
3865                                  const struct pci_device_id *id)
3866 {
3867         static int printed_version = 0;
3868         struct ieee80211_hw *hw;
3869         struct mwl8k_priv *priv;
3870         int rc;
3871         int i;
3872
3873         if (!printed_version) {
3874                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
3875                 printed_version = 1;
3876         }
3877
3878
3879         rc = pci_enable_device(pdev);
3880         if (rc) {
3881                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
3882                        MWL8K_NAME);
3883                 return rc;
3884         }
3885
3886         rc = pci_request_regions(pdev, MWL8K_NAME);
3887         if (rc) {
3888                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
3889                        MWL8K_NAME);
3890                 goto err_disable_device;
3891         }
3892
3893         pci_set_master(pdev);
3894
3895
3896         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
3897         if (hw == NULL) {
3898                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
3899                 rc = -ENOMEM;
3900                 goto err_free_reg;
3901         }
3902
3903         SET_IEEE80211_DEV(hw, &pdev->dev);
3904         pci_set_drvdata(pdev, hw);
3905
3906         priv = hw->priv;
3907         priv->hw = hw;
3908         priv->pdev = pdev;
3909         priv->device_info = &mwl8k_info_tbl[id->driver_data];
3910
3911
3912         priv->sram = pci_iomap(pdev, 0, 0x10000);
3913         if (priv->sram == NULL) {
3914                 printk(KERN_ERR "%s: Cannot map device SRAM\n",
3915                        wiphy_name(hw->wiphy));
3916                 goto err_iounmap;
3917         }
3918
3919         /*
3920          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
3921          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
3922          */
3923         priv->regs = pci_iomap(pdev, 1, 0x10000);
3924         if (priv->regs == NULL) {
3925                 priv->regs = pci_iomap(pdev, 2, 0x10000);
3926                 if (priv->regs == NULL) {
3927                         printk(KERN_ERR "%s: Cannot map device registers\n",
3928                                wiphy_name(hw->wiphy));
3929                         goto err_iounmap;
3930                 }
3931         }
3932
3933
3934         /* Reset firmware and hardware */
3935         mwl8k_hw_reset(priv);
3936
3937         /* Ask userland hotplug daemon for the device firmware */
3938         rc = mwl8k_request_firmware(priv);
3939         if (rc) {
3940                 printk(KERN_ERR "%s: Firmware files not found\n",
3941                        wiphy_name(hw->wiphy));
3942                 goto err_stop_firmware;
3943         }
3944
3945         /* Load firmware into hardware */
3946         rc = mwl8k_load_firmware(hw);
3947         if (rc) {
3948                 printk(KERN_ERR "%s: Cannot start firmware\n",
3949                        wiphy_name(hw->wiphy));
3950                 goto err_stop_firmware;
3951         }
3952
3953         /* Reclaim memory once firmware is successfully loaded */
3954         mwl8k_release_firmware(priv);
3955
3956
3957         if (priv->ap_fw) {
3958                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
3959                 if (priv->rxd_ops == NULL) {
3960                         printk(KERN_ERR "%s: Driver does not have AP "
3961                                "firmware image support for this hardware\n",
3962                                wiphy_name(hw->wiphy));
3963                         goto err_stop_firmware;
3964                 }
3965         } else {
3966                 priv->rxd_ops = &rxd_sta_ops;
3967         }
3968
3969         priv->sniffer_enabled = false;
3970         priv->wmm_enabled = false;
3971         priv->pending_tx_pkts = 0;
3972
3973
3974         /*
3975          * Extra headroom is the size of the required DMA header
3976          * minus the size of the smallest 802.11 frame (CTS frame).
3977          */
3978         hw->extra_tx_headroom =
3979                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
3980
3981         hw->channel_change_time = 10;
3982
3983         hw->queues = MWL8K_TX_QUEUES;
3984
3985         /* Set rssi and noise values to dBm */
3986         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3987         hw->vif_data_size = sizeof(struct mwl8k_vif);
3988         hw->sta_data_size = sizeof(struct mwl8k_sta);
3989
3990         priv->macids_used = 0;
3991         INIT_LIST_HEAD(&priv->vif_list);
3992
3993         /* Set default radio state and preamble */
3994         priv->radio_on = 0;
3995         priv->radio_short_preamble = 0;
3996
3997         /* Finalize join worker */
3998         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
3999
4000         /* TX reclaim and RX tasklets.  */
4001         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4002         tasklet_disable(&priv->poll_tx_task);
4003         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4004         tasklet_disable(&priv->poll_rx_task);
4005
4006         /* Power management cookie */
4007         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4008         if (priv->cookie == NULL)
4009                 goto err_stop_firmware;
4010
4011         rc = mwl8k_rxq_init(hw, 0);
4012         if (rc)
4013                 goto err_free_cookie;
4014         rxq_refill(hw, 0, INT_MAX);
4015
4016         mutex_init(&priv->fw_mutex);
4017         priv->fw_mutex_owner = NULL;
4018         priv->fw_mutex_depth = 0;
4019         priv->hostcmd_wait = NULL;
4020
4021         spin_lock_init(&priv->tx_lock);
4022
4023         priv->tx_wait = NULL;
4024
4025         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4026                 rc = mwl8k_txq_init(hw, i);
4027                 if (rc)
4028                         goto err_free_queues;
4029         }
4030
4031         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4032         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4033         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4034                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4035         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4036
4037         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4038                          IRQF_SHARED, MWL8K_NAME, hw);
4039         if (rc) {
4040                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
4041                        wiphy_name(hw->wiphy));
4042                 goto err_free_queues;
4043         }
4044
4045         /*
4046          * Temporarily enable interrupts.  Initial firmware host
4047          * commands use interrupts and avoid polling.  Disable
4048          * interrupts when done.
4049          */
4050         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4051
4052         /* Get config data, mac addrs etc */
4053         if (priv->ap_fw) {
4054                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4055                 if (!rc)
4056                         rc = mwl8k_cmd_set_hw_spec(hw);
4057         } else {
4058                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4059         }
4060         if (rc) {
4061                 printk(KERN_ERR "%s: Cannot initialise firmware\n",
4062                        wiphy_name(hw->wiphy));
4063                 goto err_free_irq;
4064         }
4065
4066         hw->wiphy->interface_modes = 0;
4067         if (priv->ap_macids_supported)
4068                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4069         if (priv->sta_macids_supported)
4070                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4071
4072
4073         /* Turn radio off */
4074         rc = mwl8k_cmd_radio_disable(hw);
4075         if (rc) {
4076                 printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
4077                 goto err_free_irq;
4078         }
4079
4080         /* Clear MAC address */
4081         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4082         if (rc) {
4083                 printk(KERN_ERR "%s: Cannot clear MAC address\n",
4084                        wiphy_name(hw->wiphy));
4085                 goto err_free_irq;
4086         }
4087
4088         /* Disable interrupts */
4089         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4090         free_irq(priv->pdev->irq, hw);
4091
4092         rc = ieee80211_register_hw(hw);
4093         if (rc) {
4094                 printk(KERN_ERR "%s: Cannot register device\n",
4095                        wiphy_name(hw->wiphy));
4096                 goto err_free_queues;
4097         }
4098
4099         printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
4100                wiphy_name(hw->wiphy), priv->device_info->part_name,
4101                priv->hw_rev, hw->wiphy->perm_addr,
4102                priv->ap_fw ? "AP" : "STA",
4103                (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4104                (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4105
4106         return 0;
4107
4108 err_free_irq:
4109         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4110         free_irq(priv->pdev->irq, hw);
4111
4112 err_free_queues:
4113         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4114                 mwl8k_txq_deinit(hw, i);
4115         mwl8k_rxq_deinit(hw, 0);
4116
4117 err_free_cookie:
4118         if (priv->cookie != NULL)
4119                 pci_free_consistent(priv->pdev, 4,
4120                                 priv->cookie, priv->cookie_dma);
4121
4122 err_stop_firmware:
4123         mwl8k_hw_reset(priv);
4124         mwl8k_release_firmware(priv);
4125
4126 err_iounmap:
4127         if (priv->regs != NULL)
4128                 pci_iounmap(pdev, priv->regs);
4129
4130         if (priv->sram != NULL)
4131                 pci_iounmap(pdev, priv->sram);
4132
4133         pci_set_drvdata(pdev, NULL);
4134         ieee80211_free_hw(hw);
4135
4136 err_free_reg:
4137         pci_release_regions(pdev);
4138
4139 err_disable_device:
4140         pci_disable_device(pdev);
4141
4142         return rc;
4143 }
4144
4145 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4146 {
4147         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4148 }
4149
4150 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4151 {
4152         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4153         struct mwl8k_priv *priv;
4154         int i;
4155
4156         if (hw == NULL)
4157                 return;
4158         priv = hw->priv;
4159
4160         ieee80211_stop_queues(hw);
4161
4162         ieee80211_unregister_hw(hw);
4163
4164         /* Remove TX reclaim and RX tasklets.  */
4165         tasklet_kill(&priv->poll_tx_task);
4166         tasklet_kill(&priv->poll_rx_task);
4167
4168         /* Stop hardware */
4169         mwl8k_hw_reset(priv);
4170
4171         /* Return all skbs to mac80211 */
4172         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4173                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4174
4175         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4176                 mwl8k_txq_deinit(hw, i);
4177
4178         mwl8k_rxq_deinit(hw, 0);
4179
4180         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4181
4182         pci_iounmap(pdev, priv->regs);
4183         pci_iounmap(pdev, priv->sram);
4184         pci_set_drvdata(pdev, NULL);
4185         ieee80211_free_hw(hw);
4186         pci_release_regions(pdev);
4187         pci_disable_device(pdev);
4188 }
4189
4190 static struct pci_driver mwl8k_driver = {
4191         .name           = MWL8K_NAME,
4192         .id_table       = mwl8k_pci_id_table,
4193         .probe          = mwl8k_probe,
4194         .remove         = __devexit_p(mwl8k_remove),
4195         .shutdown       = __devexit_p(mwl8k_shutdown),
4196 };
4197
4198 static int __init mwl8k_init(void)
4199 {
4200         return pci_register_driver(&mwl8k_driver);
4201 }
4202
4203 static void __exit mwl8k_exit(void)
4204 {
4205         pci_unregister_driver(&mwl8k_driver);
4206 }
4207
4208 module_init(mwl8k_init);
4209 module_exit(mwl8k_exit);
4210
4211 MODULE_DESCRIPTION(MWL8K_DESC);
4212 MODULE_VERSION(MWL8K_VERSION);
4213 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
4214 MODULE_LICENSE("GPL");