drivers/net/wireless/mwl8k.c

   1 /*
   2  * drivers/net/wireless/mwl8k.c
   3  * Driver for Marvell TOPDOG 802.11 Wireless cards
   4  *
   5  * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
   6  *
   7  * This file is licensed under the terms of the GNU General Public
   8  * License version 2.  This program is licensed "as is" without any
   9  * warranty of any kind, whether express or implied.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/sched.h>
  16 #include <linux/spinlock.h>
  17 #include <linux/list.h>
  18 #include <linux/pci.h>
  19 #include <linux/delay.h>
  20 #include <linux/completion.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/slab.h>
  23 #include <net/mac80211.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/firmware.h>
  26 #include <linux/workqueue.h>
  27
  28 #define MWL8K_DESC      "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
  29 #define MWL8K_NAME      KBUILD_MODNAME
  30 #define MWL8K_VERSION   "0.12"
  31
  32 /* Register definitions */
  33 #define MWL8K_HIU_GEN_PTR                       0x00000c10
  34 #define  MWL8K_MODE_STA                          0x0000005a
  35 #define  MWL8K_MODE_AP                           0x000000a5
  36 #define MWL8K_HIU_INT_CODE                      0x00000c14
  37 #define  MWL8K_FWSTA_READY                       0xf0f1f2f4
  38 #define  MWL8K_FWAP_READY                        0xf1f2f4a5
  39 #define  MWL8K_INT_CODE_CMD_FINISHED             0x00000005
  40 #define MWL8K_HIU_SCRATCH                       0x00000c40
  41
  42 /* Host->device communications */
  43 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS          0x00000c18
  44 #define MWL8K_HIU_H2A_INTERRUPT_STATUS          0x00000c1c
  45 #define MWL8K_HIU_H2A_INTERRUPT_MASK            0x00000c20
  46 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL       0x00000c24
  47 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK     0x00000c28
  48 #define  MWL8K_H2A_INT_DUMMY                     (1 << 20)
  49 #define  MWL8K_H2A_INT_RESET                     (1 << 15)
  50 #define  MWL8K_H2A_INT_DOORBELL                  (1 << 1)
  51 #define  MWL8K_H2A_INT_PPA_READY                 (1 << 0)
  52
  53 /* Device->host communications */
  54 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS          0x00000c2c
  55 #define MWL8K_HIU_A2H_INTERRUPT_STATUS          0x00000c30
  56 #define MWL8K_HIU_A2H_INTERRUPT_MASK            0x00000c34
  57 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL       0x00000c38
  58 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK     0x00000c3c
  59 #define  MWL8K_A2H_INT_DUMMY                     (1 << 20)
  60 #define  MWL8K_A2H_INT_CHNL_SWITCHED             (1 << 11)
  61 #define  MWL8K_A2H_INT_QUEUE_EMPTY               (1 << 10)
  62 #define  MWL8K_A2H_INT_RADAR_DETECT              (1 << 7)
  63 #define  MWL8K_A2H_INT_RADIO_ON                  (1 << 6)
  64 #define  MWL8K_A2H_INT_RADIO_OFF                 (1 << 5)
  65 #define  MWL8K_A2H_INT_MAC_EVENT                 (1 << 3)
  66 #define  MWL8K_A2H_INT_OPC_DONE                  (1 << 2)
  67 #define  MWL8K_A2H_INT_RX_READY                  (1 << 1)
  68 #define  MWL8K_A2H_INT_TX_DONE                   (1 << 0)
  69
  70 #define MWL8K_A2H_EVENTS        (MWL8K_A2H_INT_DUMMY | \
  71                                  MWL8K_A2H_INT_CHNL_SWITCHED | \
  72                                  MWL8K_A2H_INT_QUEUE_EMPTY | \
  73                                  MWL8K_A2H_INT_RADAR_DETECT | \
  74                                  MWL8K_A2H_INT_RADIO_ON | \
  75                                  MWL8K_A2H_INT_RADIO_OFF | \
  76                                  MWL8K_A2H_INT_MAC_EVENT | \
  77                                  MWL8K_A2H_INT_OPC_DONE | \
  78                                  MWL8K_A2H_INT_RX_READY | \
  79                                  MWL8K_A2H_INT_TX_DONE)
  80
  81 #define MWL8K_RX_QUEUES         1
  82 #define MWL8K_TX_QUEUES         4
  83
  84 struct rxd_ops {
  85         int rxd_size;
  86         void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
  87         void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
  88         int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
  89                            __le16 *qos);
  90 };
  91
  92 struct mwl8k_device_info {
  93         char *part_name;
  94         char *helper_image;
  95         char *fw_image;
  96         struct rxd_ops *ap_rxd_ops;
  97 };
  98
  99 struct mwl8k_rx_queue {
 100         int rxd_count;
 101
 102         /* hw receives here */
 103         int head;
 104
 105         /* refill descs here */
 106         int tail;
 107
 108         void *rxd;
 109         dma_addr_t rxd_dma;
 110         struct {
 111                 struct sk_buff *skb;
 112                 DECLARE_PCI_UNMAP_ADDR(dma)
 113         } *buf;
 114 };
 115
 116 struct mwl8k_tx_queue {
 117         /* hw transmits here */
 118         int head;
 119
 120         /* sw appends here */
 121         int tail;
 122
 123         unsigned int len;
 124         struct mwl8k_tx_desc *txd;
 125         dma_addr_t txd_dma;
 126         struct sk_buff **skb;
 127 };
 128
 129 struct mwl8k_priv {
 130         struct ieee80211_hw *hw;
 131         struct pci_dev *pdev;
 132
 133         struct mwl8k_device_info *device_info;
 134
 135         void __iomem *sram;
 136         void __iomem *regs;
 137
 138         /* firmware */
 139         struct firmware *fw_helper;
 140         struct firmware *fw_ucode;
 141
 142         /* hardware/firmware parameters */
 143         bool ap_fw;
 144         struct rxd_ops *rxd_ops;
 145         struct ieee80211_supported_band band_24;
 146         struct ieee80211_channel channels_24[14];
 147         struct ieee80211_rate rates_24[14];
 148         struct ieee80211_supported_band band_50;
 149         struct ieee80211_channel channels_50[4];
 150         struct ieee80211_rate rates_50[9];
 151         u32 ap_macids_supported;
 152         u32 sta_macids_supported;
 153
 154         /* firmware access */
 155         struct mutex fw_mutex;
 156         struct task_struct *fw_mutex_owner;
 157         int fw_mutex_depth;
 158         struct completion *hostcmd_wait;
 159
 160         /* lock held over TX and TX reap */
 161         spinlock_t tx_lock;
 162
 163         /* TX quiesce completion, protected by fw_mutex and tx_lock */
 164         struct completion *tx_wait;
 165
 166         /* List of interfaces.  */
 167         u32 macids_used;
 168         struct list_head vif_list;
 169
 170         /* power management status cookie from firmware */
 171         u32 *cookie;
 172         dma_addr_t cookie_dma;
 173
 174         u16 num_mcaddrs;
 175         u8 hw_rev;
 176         u32 fw_rev;
 177
 178         /*
 179          * Running count of TX packets in flight, to avoid
 180          * iterating over the transmit rings each time.
 181          */
 182         int pending_tx_pkts;
 183
 184         struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
 185         struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
 186
 187         bool radio_on;
 188         bool radio_short_preamble;
 189         bool sniffer_enabled;
 190         bool wmm_enabled;
 191
 192         /* XXX need to convert this to handle multiple interfaces */
 193         bool capture_beacon;
 194         u8 capture_bssid[ETH_ALEN];
 195         struct sk_buff *beacon_skb;
 196
 197         /*
 198          * This FJ worker has to be global as it is scheduled from the
 199          * RX handler.  At this point we don't know which interface it
 200          * belongs to until the list of bssids waiting to complete join
 201          * is checked.
 202          */
 203         struct work_struct finalize_join_worker;
 204
 205         /* Tasklet to perform TX reclaim.  */
 206         struct tasklet_struct poll_tx_task;
 207
 208         /* Tasklet to perform RX.  */
 209         struct tasklet_struct poll_rx_task;
 210 };
 211
 212 /* Per interface specific private data */
 213 struct mwl8k_vif {
 214         struct list_head list;
 215         struct ieee80211_vif *vif;
 216
 217         /* Firmware macid for this vif.  */
 218         int macid;
 219
 220         /* Non AMPDU sequence number assigned by driver.  */
 221         u16 seqno;
 222 };
 223 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
 224
 225 struct mwl8k_sta {
 226         /* Index into station database. Returned by UPDATE_STADB.  */
 227         u8 peer_id;
 228 };
 229 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
 230
 231 static const struct ieee80211_channel mwl8k_channels_24[] = {
 232         { .center_freq = 2412, .hw_value = 1, },
 233         { .center_freq = 2417, .hw_value = 2, },
 234         { .center_freq = 2422, .hw_value = 3, },
 235         { .center_freq = 2427, .hw_value = 4, },
 236         { .center_freq = 2432, .hw_value = 5, },
 237         { .center_freq = 2437, .hw_value = 6, },
 238         { .center_freq = 2442, .hw_value = 7, },
 239         { .center_freq = 2447, .hw_value = 8, },
 240         { .center_freq = 2452, .hw_value = 9, },
 241         { .center_freq = 2457, .hw_value = 10, },
 242         { .center_freq = 2462, .hw_value = 11, },
 243         { .center_freq = 2467, .hw_value = 12, },
 244         { .center_freq = 2472, .hw_value = 13, },
 245         { .center_freq = 2484, .hw_value = 14, },
 246 };
 247
 248 static const struct ieee80211_rate mwl8k_rates_24[] = {
 249         { .bitrate = 10, .hw_value = 2, },
 250         { .bitrate = 20, .hw_value = 4, },
 251         { .bitrate = 55, .hw_value = 11, },
 252         { .bitrate = 110, .hw_value = 22, },
 253         { .bitrate = 220, .hw_value = 44, },
 254         { .bitrate = 60, .hw_value = 12, },
 255         { .bitrate = 90, .hw_value = 18, },
 256         { .bitrate = 120, .hw_value = 24, },
 257         { .bitrate = 180, .hw_value = 36, },
 258         { .bitrate = 240, .hw_value = 48, },
 259         { .bitrate = 360, .hw_value = 72, },
 260         { .bitrate = 480, .hw_value = 96, },
 261         { .bitrate = 540, .hw_value = 108, },
 262         { .bitrate = 720, .hw_value = 144, },
 263 };
 264
 265 static const struct ieee80211_channel mwl8k_channels_50[] = {
 266         { .center_freq = 5180, .hw_value = 36, },
 267         { .center_freq = 5200, .hw_value = 40, },
 268         { .center_freq = 5220, .hw_value = 44, },
 269         { .center_freq = 5240, .hw_value = 48, },
 270 };
 271
 272 static const struct ieee80211_rate mwl8k_rates_50[] = {
 273         { .bitrate = 60, .hw_value = 12, },
 274         { .bitrate = 90, .hw_value = 18, },
 275         { .bitrate = 120, .hw_value = 24, },
 276         { .bitrate = 180, .hw_value = 36, },
 277         { .bitrate = 240, .hw_value = 48, },
 278         { .bitrate = 360, .hw_value = 72, },
 279         { .bitrate = 480, .hw_value = 96, },
 280         { .bitrate = 540, .hw_value = 108, },
 281         { .bitrate = 720, .hw_value = 144, },
 282 };
 283
 284 /* Set or get info from Firmware */
 285 #define MWL8K_CMD_SET                   0x0001
 286 #define MWL8K_CMD_GET                   0x0000
 287
 288 /* Firmware command codes */
 289 #define MWL8K_CMD_CODE_DNLD             0x0001
 290 #define MWL8K_CMD_GET_HW_SPEC           0x0003
 291 #define MWL8K_CMD_SET_HW_SPEC           0x0004
 292 #define MWL8K_CMD_MAC_MULTICAST_ADR     0x0010
 293 #define MWL8K_CMD_GET_STAT              0x0014
 294 #define MWL8K_CMD_RADIO_CONTROL         0x001c
 295 #define MWL8K_CMD_RF_TX_POWER           0x001e
 296 #define MWL8K_CMD_RF_ANTENNA            0x0020
 297 #define MWL8K_CMD_SET_BEACON            0x0100          /* per-vif */
 298 #define MWL8K_CMD_SET_PRE_SCAN          0x0107
 299 #define MWL8K_CMD_SET_POST_SCAN         0x0108
 300 #define MWL8K_CMD_SET_RF_CHANNEL        0x010a
 301 #define MWL8K_CMD_SET_AID               0x010d
 302 #define MWL8K_CMD_SET_RATE              0x0110
 303 #define MWL8K_CMD_SET_FINALIZE_JOIN     0x0111
 304 #define MWL8K_CMD_RTS_THRESHOLD         0x0113
 305 #define MWL8K_CMD_SET_SLOT              0x0114
 306 #define MWL8K_CMD_SET_EDCA_PARAMS       0x0115
 307 #define MWL8K_CMD_SET_WMM_MODE          0x0123
 308 #define MWL8K_CMD_MIMO_CONFIG           0x0125
 309 #define MWL8K_CMD_USE_FIXED_RATE        0x0126
 310 #define MWL8K_CMD_ENABLE_SNIFFER        0x0150
 311 #define MWL8K_CMD_SET_MAC_ADDR          0x0202          /* per-vif */
 312 #define MWL8K_CMD_SET_RATEADAPT_MODE    0x0203
 313 #define MWL8K_CMD_BSS_START             0x1100          /* per-vif */
 314 #define MWL8K_CMD_SET_NEW_STN           0x1111          /* per-vif */
 315 #define MWL8K_CMD_UPDATE_STADB          0x1123
 316
 317 static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
 318 {
 319 #define MWL8K_CMDNAME(x)        case MWL8K_CMD_##x: do {\
 320                                         snprintf(buf, bufsize, "%s", #x);\
 321                                         return buf;\
 322                                         } while (0)
 323         switch (cmd & ~0x8000) {
 324                 MWL8K_CMDNAME(CODE_DNLD);
 325                 MWL8K_CMDNAME(GET_HW_SPEC);
 326                 MWL8K_CMDNAME(SET_HW_SPEC);
 327                 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
 328                 MWL8K_CMDNAME(GET_STAT);
 329                 MWL8K_CMDNAME(RADIO_CONTROL);
 330                 MWL8K_CMDNAME(RF_TX_POWER);
 331                 MWL8K_CMDNAME(RF_ANTENNA);
 332                 MWL8K_CMDNAME(SET_BEACON);
 333                 MWL8K_CMDNAME(SET_PRE_SCAN);
 334                 MWL8K_CMDNAME(SET_POST_SCAN);
 335                 MWL8K_CMDNAME(SET_RF_CHANNEL);
 336                 MWL8K_CMDNAME(SET_AID);
 337                 MWL8K_CMDNAME(SET_RATE);
 338                 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
 339                 MWL8K_CMDNAME(RTS_THRESHOLD);
 340                 MWL8K_CMDNAME(SET_SLOT);
 341                 MWL8K_CMDNAME(SET_EDCA_PARAMS);
 342                 MWL8K_CMDNAME(SET_WMM_MODE);
 343                 MWL8K_CMDNAME(MIMO_CONFIG);
 344                 MWL8K_CMDNAME(USE_FIXED_RATE);
 345                 MWL8K_CMDNAME(ENABLE_SNIFFER);
 346                 MWL8K_CMDNAME(SET_MAC_ADDR);
 347                 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
 348                 MWL8K_CMDNAME(BSS_START);
 349                 MWL8K_CMDNAME(SET_NEW_STN);
 350                 MWL8K_CMDNAME(UPDATE_STADB);
 351         default:
 352                 snprintf(buf, bufsize, "0x%x", cmd);
 353         }
 354 #undef MWL8K_CMDNAME
 355
 356         return buf;
 357 }
 358
 359 /* Hardware and firmware reset */
 360 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
 361 {
 362         iowrite32(MWL8K_H2A_INT_RESET,
 363                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 364         iowrite32(MWL8K_H2A_INT_RESET,
 365                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 366         msleep(20);
 367 }
 368
 369 /* Release fw image */
 370 static void mwl8k_release_fw(struct firmware **fw)
 371 {
 372         if (*fw == NULL)
 373                 return;
 374         release_firmware(*fw);
 375         *fw = NULL;
 376 }
 377
 378 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
 379 {
 380         mwl8k_release_fw(&priv->fw_ucode);
 381         mwl8k_release_fw(&priv->fw_helper);
 382 }
 383
 384 /* Request fw image */
 385 static int mwl8k_request_fw(struct mwl8k_priv *priv,
 386                             const char *fname, struct firmware **fw)
 387 {
 388         /* release current image */
 389         if (*fw != NULL)
 390                 mwl8k_release_fw(fw);
 391
 392         return request_firmware((const struct firmware **)fw,
 393                                 fname, &priv->pdev->dev);
 394 }
 395
 396 static int mwl8k_request_firmware(struct mwl8k_priv *priv)
 397 {
 398         struct mwl8k_device_info *di = priv->device_info;
 399         int rc;
 400
 401         if (di->helper_image != NULL) {
 402                 rc = mwl8k_request_fw(priv, di->helper_image, &priv->fw_helper);
 403                 if (rc) {
 404                         printk(KERN_ERR "%s: Error requesting helper "
 405                                "firmware file %s\n", pci_name(priv->pdev),
 406                                di->helper_image);
 407                         return rc;
 408                 }
 409         }
 410
 411         rc = mwl8k_request_fw(priv, di->fw_image, &priv->fw_ucode);
 412         if (rc) {
 413                 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
 414                        pci_name(priv->pdev), di->fw_image);
 415                 mwl8k_release_fw(&priv->fw_helper);
 416                 return rc;
 417         }
 418
 419         return 0;
 420 }
 421
 422 struct mwl8k_cmd_pkt {
 423         __le16  code;
 424         __le16  length;
 425         __u8    seq_num;
 426         __u8    macid;
 427         __le16  result;
 428         char    payload[0];
 429 } __attribute__((packed));
 430
 431 /*
 432  * Firmware loading.
 433  */
 434 static int
 435 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
 436 {
 437         void __iomem *regs = priv->regs;
 438         dma_addr_t dma_addr;
 439         int loops;
 440
 441         dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
 442         if (pci_dma_mapping_error(priv->pdev, dma_addr))
 443                 return -ENOMEM;
 444
 445         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
 446         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 447         iowrite32(MWL8K_H2A_INT_DOORBELL,
 448                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 449         iowrite32(MWL8K_H2A_INT_DUMMY,
 450                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
 451
 452         loops = 1000;
 453         do {
 454                 u32 int_code;
 455
 456                 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
 457                 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
 458                         iowrite32(0, regs + MWL8K_HIU_INT_CODE);
 459                         break;
 460                 }
 461
 462                 cond_resched();
 463                 udelay(1);
 464         } while (--loops);
 465
 466         pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
 467
 468         return loops ? 0 : -ETIMEDOUT;
 469 }
 470
 471 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
 472                                 const u8 *data, size_t length)
 473 {
 474         struct mwl8k_cmd_pkt *cmd;
 475         int done;
 476         int rc = 0;
 477
 478         cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
 479         if (cmd == NULL)
 480                 return -ENOMEM;
 481
 482         cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
 483         cmd->seq_num = 0;
 484         cmd->macid = 0;
 485         cmd->result = 0;
 486
 487         done = 0;
 488         while (length) {
 489                 int block_size = length > 256 ? 256 : length;
 490
 491                 memcpy(cmd->payload, data + done, block_size);
 492                 cmd->length = cpu_to_le16(block_size);
 493
 494                 rc = mwl8k_send_fw_load_cmd(priv, cmd,
 495                                                 sizeof(*cmd) + block_size);
 496                 if (rc)
 497                         break;
 498
 499                 done += block_size;
 500                 length -= block_size;
 501         }
 502
 503         if (!rc) {
 504                 cmd->length = 0;
 505                 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
 506         }
 507
 508         kfree(cmd);
 509
 510         return rc;
 511 }
 512
 513 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
 514                                 const u8 *data, size_t length)
 515 {
 516         unsigned char *buffer;
 517         int may_continue, rc = 0;
 518         u32 done, prev_block_size;
 519
 520         buffer = kmalloc(1024, GFP_KERNEL);
 521         if (buffer == NULL)
 522                 return -ENOMEM;
 523
 524         done = 0;
 525         prev_block_size = 0;
 526         may_continue = 1000;
 527         while (may_continue > 0) {
 528                 u32 block_size;
 529
 530                 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
 531                 if (block_size & 1) {
 532                         block_size &= ~1;
 533                         may_continue--;
 534                 } else {
 535                         done += prev_block_size;
 536                         length -= prev_block_size;
 537                 }
 538
 539                 if (block_size > 1024 || block_size > length) {
 540                         rc = -EOVERFLOW;
 541                         break;
 542                 }
 543
 544                 if (length == 0) {
 545                         rc = 0;
 546                         break;
 547                 }
 548
 549                 if (block_size == 0) {
 550                         rc = -EPROTO;
 551                         may_continue--;
 552                         udelay(1);
 553                         continue;
 554                 }
 555
 556                 prev_block_size = block_size;
 557                 memcpy(buffer, data + done, block_size);
 558
 559                 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
 560                 if (rc)
 561                         break;
 562         }
 563
 564         if (!rc && length != 0)
 565                 rc = -EREMOTEIO;
 566
 567         kfree(buffer);
 568
 569         return rc;
 570 }
 571
 572 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
 573 {
 574         struct mwl8k_priv *priv = hw->priv;
 575         struct firmware *fw = priv->fw_ucode;
 576         int rc;
 577         int loops;
 578
 579         if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
 580                 struct firmware *helper = priv->fw_helper;
 581
 582                 if (helper == NULL) {
 583                         printk(KERN_ERR "%s: helper image needed but none "
 584                                "given\n", pci_name(priv->pdev));
 585                         return -EINVAL;
 586                 }
 587
 588                 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
 589                 if (rc) {
 590                         printk(KERN_ERR "%s: unable to load firmware "
 591                                "helper image\n", pci_name(priv->pdev));
 592                         return rc;
 593                 }
 594                 msleep(5);
 595
 596                 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
 597         } else {
 598                 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
 599         }
 600
 601         if (rc) {
 602                 printk(KERN_ERR "%s: unable to load firmware image\n",
 603                        pci_name(priv->pdev));
 604                 return rc;
 605         }
 606
 607         iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
 608
 609         loops = 500000;
 610         do {
 611                 u32 ready_code;
 612
 613                 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
 614                 if (ready_code == MWL8K_FWAP_READY) {
 615                         priv->ap_fw = 1;
 616                         break;
 617                 } else if (ready_code == MWL8K_FWSTA_READY) {
 618                         priv->ap_fw = 0;
 619                         break;
 620                 }
 621
 622                 cond_resched();
 623                 udelay(1);
 624         } while (--loops);
 625
 626         return loops ? 0 : -ETIMEDOUT;
 627 }
 628
 629
 630 /* DMA header used by firmware and hardware.  */
 631 struct mwl8k_dma_data {
 632         __le16 fwlen;
 633         struct ieee80211_hdr wh;
 634         char data[0];
 635 } __attribute__((packed));
 636
 637 /* Routines to add/remove DMA header from skb.  */
 638 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
 639 {
 640         struct mwl8k_dma_data *tr;
 641         int hdrlen;
 642
 643         tr = (struct mwl8k_dma_data *)skb->data;
 644         hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
 645
 646         if (hdrlen != sizeof(tr->wh)) {
 647                 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
 648                         memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
 649                         *((__le16 *)(tr->data - 2)) = qos;
 650                 } else {
 651                         memmove(tr->data - hdrlen, &tr->wh, hdrlen);
 652                 }
 653         }
 654
 655         if (hdrlen != sizeof(*tr))
 656                 skb_pull(skb, sizeof(*tr) - hdrlen);
 657 }
 658
 659 static inline void mwl8k_add_dma_header(struct sk_buff *skb)
 660 {
 661         struct ieee80211_hdr *wh;
 662         int hdrlen;
 663         struct mwl8k_dma_data *tr;
 664
 665         /*
 666          * Add a firmware DMA header; the firmware requires that we
 667          * present a 2-byte payload length followed by a 4-address
 668          * header (without QoS field), followed (optionally) by any
 669          * WEP/ExtIV header (but only filled in for CCMP).
 670          */
 671         wh = (struct ieee80211_hdr *)skb->data;
 672
 673         hdrlen = ieee80211_hdrlen(wh->frame_control);
 674         if (hdrlen != sizeof(*tr))
 675                 skb_push(skb, sizeof(*tr) - hdrlen);
 676
 677         if (ieee80211_is_data_qos(wh->frame_control))
 678                 hdrlen -= 2;
 679
 680         tr = (struct mwl8k_dma_data *)skb->data;
 681         if (wh != &tr->wh)
 682                 memmove(&tr->wh, wh, hdrlen);
 683         if (hdrlen != sizeof(tr->wh))
 684                 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
 685
 686         /*
 687          * Firmware length is the length of the fully formed "802.11
 688          * payload".  That is, everything except for the 802.11 header.
 689          * This includes all crypto material including the MIC.
 690          */
 691         tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
 692 }
 693
 694
 695 /*
 696  * Packet reception for 88w8366 AP firmware.
 697  */
 698 struct mwl8k_rxd_8366_ap {
 699         __le16 pkt_len;
 700         __u8 sq2;
 701         __u8 rate;
 702         __le32 pkt_phys_addr;
 703         __le32 next_rxd_phys_addr;
 704         __le16 qos_control;
 705         __le16 htsig2;
 706         __le32 hw_rssi_info;
 707         __le32 hw_noise_floor_info;
 708         __u8 noise_floor;
 709         __u8 pad0[3];
 710         __u8 rssi;
 711         __u8 rx_status;
 712         __u8 channel;
 713         __u8 rx_ctrl;
 714 } __attribute__((packed));
 715
 716 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT      0x80
 717 #define MWL8K_8366_AP_RATE_INFO_40MHZ           0x40
 718 #define MWL8K_8366_AP_RATE_INFO_RATEID(x)       ((x) & 0x3f)
 719
 720 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST     0x80
 721
 722 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
 723 {
 724         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 725
 726         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 727         rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
 728 }
 729
 730 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
 731 {
 732         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 733
 734         rxd->pkt_len = cpu_to_le16(len);
 735         rxd->pkt_phys_addr = cpu_to_le32(addr);
 736         wmb();
 737         rxd->rx_ctrl = 0;
 738 }
 739
 740 static int
 741 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
 742                           __le16 *qos)
 743 {
 744         struct mwl8k_rxd_8366_ap *rxd = _rxd;
 745
 746         if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
 747                 return -1;
 748         rmb();
 749
 750         memset(status, 0, sizeof(*status));
 751
 752         status->signal = -rxd->rssi;
 753         status->noise = -rxd->noise_floor;
 754
 755         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 756                 status->flag |= RX_FLAG_HT;
 757                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 758                         status->flag |= RX_FLAG_40MHZ;
 759                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 760         } else {
 761                 int i;
 762
 763                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 764                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 765                                 status->rate_idx = i;
 766                                 break;
 767                         }
 768                 }
 769         }
 770
 771         if (rxd->channel > 14) {
 772                 status->band = IEEE80211_BAND_5GHZ;
 773                 if (!(status->flag & RX_FLAG_HT))
 774                         status->rate_idx -= 5;
 775         } else {
 776                 status->band = IEEE80211_BAND_2GHZ;
 777         }
 778         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 779
 780         *qos = rxd->qos_control;
 781
 782         return le16_to_cpu(rxd->pkt_len);
 783 }
 784
 785 static struct rxd_ops rxd_8366_ap_ops = {
 786         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 787         .rxd_init       = mwl8k_rxd_8366_ap_init,
 788         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 789         .rxd_process    = mwl8k_rxd_8366_ap_process,
 790 };
 791
 792 /*
 793  * Packet reception for STA firmware.
 794  */
 795 struct mwl8k_rxd_sta {
 796         __le16 pkt_len;
 797         __u8 link_quality;
 798         __u8 noise_level;
 799         __le32 pkt_phys_addr;
 800         __le32 next_rxd_phys_addr;
 801         __le16 qos_control;
 802         __le16 rate_info;
 803         __le32 pad0[4];
 804         __u8 rssi;
 805         __u8 channel;
 806         __le16 pad1;
 807         __u8 rx_ctrl;
 808         __u8 rx_status;
 809         __u8 pad2[2];
 810 } __attribute__((packed));
 811
 812 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 813 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 814 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 815 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 816 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 817 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 818
 819 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 820
 821 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 822 {
 823         struct mwl8k_rxd_sta *rxd = _rxd;
 824
 825         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 826         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 827 }
 828
 829 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 830 {
 831         struct mwl8k_rxd_sta *rxd = _rxd;
 832
 833         rxd->pkt_len = cpu_to_le16(len);
 834         rxd->pkt_phys_addr = cpu_to_le32(addr);
 835         wmb();
 836         rxd->rx_ctrl = 0;
 837 }
 838
 839 static int
 840 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 841                        __le16 *qos)
 842 {
 843         struct mwl8k_rxd_sta *rxd = _rxd;
 844         u16 rate_info;
 845
 846         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 847                 return -1;
 848         rmb();
 849
 850         rate_info = le16_to_cpu(rxd->rate_info);
 851
 852         memset(status, 0, sizeof(*status));
 853
 854         status->signal = -rxd->rssi;
 855         status->noise = -rxd->noise_level;
 856         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 857         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
 858
 859         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
 860                 status->flag |= RX_FLAG_SHORTPRE;
 861         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
 862                 status->flag |= RX_FLAG_40MHZ;
 863         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
 864                 status->flag |= RX_FLAG_SHORT_GI;
 865         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
 866                 status->flag |= RX_FLAG_HT;
 867
 868         if (rxd->channel > 14) {
 869                 status->band = IEEE80211_BAND_5GHZ;
 870                 if (!(status->flag & RX_FLAG_HT))
 871                         status->rate_idx -= 5;
 872         } else {
 873                 status->band = IEEE80211_BAND_2GHZ;
 874         }
 875         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 876
 877         *qos = rxd->qos_control;
 878
 879         return le16_to_cpu(rxd->pkt_len);
 880 }
 881
 882 static struct rxd_ops rxd_sta_ops = {
 883         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
 884         .rxd_init       = mwl8k_rxd_sta_init,
 885         .rxd_refill     = mwl8k_rxd_sta_refill,
 886         .rxd_process    = mwl8k_rxd_sta_process,
 887 };
 888
 889
 890 #define MWL8K_RX_DESCS          256
 891 #define MWL8K_RX_MAXSZ          3800
 892
 893 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 894 {
 895         struct mwl8k_priv *priv = hw->priv;
 896         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 897         int size;
 898         int i;
 899
 900         rxq->rxd_count = 0;
 901         rxq->head = 0;
 902         rxq->tail = 0;
 903
 904         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 905
 906         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 907         if (rxq->rxd == NULL) {
 908                 printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
 909                        wiphy_name(hw->wiphy));
 910                 return -ENOMEM;
 911         }
 912         memset(rxq->rxd, 0, size);
 913
 914         rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
 915         if (rxq->buf == NULL) {
 916                 printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
 917                        wiphy_name(hw->wiphy));
 918                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
 919                 return -ENOMEM;
 920         }
 921         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
 922
 923         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 924                 int desc_size;
 925                 void *rxd;
 926                 int nexti;
 927                 dma_addr_t next_dma_addr;
 928
 929                 desc_size = priv->rxd_ops->rxd_size;
 930                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
 931
 932                 nexti = i + 1;
 933                 if (nexti == MWL8K_RX_DESCS)
 934                         nexti = 0;
 935                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
 936
 937                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
 938         }
 939
 940         return 0;
 941 }
 942
 943 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
 944 {
 945         struct mwl8k_priv *priv = hw->priv;
 946         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 947         int refilled;
 948
 949         refilled = 0;
 950         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
 951                 struct sk_buff *skb;
 952                 dma_addr_t addr;
 953                 int rx;
 954                 void *rxd;
 955
 956                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
 957                 if (skb == NULL)
 958                         break;
 959
 960                 addr = pci_map_single(priv->pdev, skb->data,
 961                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
 962
 963                 rxq->rxd_count++;
 964                 rx = rxq->tail++;
 965                 if (rxq->tail == MWL8K_RX_DESCS)
 966                         rxq->tail = 0;
 967                 rxq->buf[rx].skb = skb;
 968                 pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
 969
 970                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
 971                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
 972
 973                 refilled++;
 974         }
 975
 976         return refilled;
 977 }
 978
 979 /* Must be called only when the card's reception is completely halted */
 980 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
 981 {
 982         struct mwl8k_priv *priv = hw->priv;
 983         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 984         int i;
 985
 986         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 987                 if (rxq->buf[i].skb != NULL) {
 988                         pci_unmap_single(priv->pdev,
 989                                          pci_unmap_addr(&rxq->buf[i], dma),
 990                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
 991                         pci_unmap_addr_set(&rxq->buf[i], dma, 0);
 992
 993                         kfree_skb(rxq->buf[i].skb);
 994                         rxq->buf[i].skb = NULL;
 995                 }
 996         }
 997
 998         kfree(rxq->buf);
 999         rxq->buf = NULL;
1000
1001         pci_free_consistent(priv->pdev,
1002                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1003                             rxq->rxd, rxq->rxd_dma);
1004         rxq->rxd = NULL;
1005 }
1006
1007
1008 /*
1009  * Scan a list of BSSIDs to process for finalize join.
1010  * Allows for extension to process multiple BSSIDs.
1011  */
1012 static inline int
1013 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1014 {
1015         return priv->capture_beacon &&
1016                 ieee80211_is_beacon(wh->frame_control) &&
1017                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1018 }
1019
1020 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1021                                      struct sk_buff *skb)
1022 {
1023         struct mwl8k_priv *priv = hw->priv;
1024
1025         priv->capture_beacon = false;
1026         memset(priv->capture_bssid, 0, ETH_ALEN);
1027
1028         /*
1029          * Use GFP_ATOMIC as rxq_process is called from
1030          * the primary interrupt handler, memory allocation call
1031          * must not sleep.
1032          */
1033         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1034         if (priv->beacon_skb != NULL)
1035                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1036 }
1037
1038 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1039 {
1040         struct mwl8k_priv *priv = hw->priv;
1041         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1042         int processed;
1043
1044         processed = 0;
1045         while (rxq->rxd_count && limit--) {
1046                 struct sk_buff *skb;
1047                 void *rxd;
1048                 int pkt_len;
1049                 struct ieee80211_rx_status status;
1050                 __le16 qos;
1051
1052                 skb = rxq->buf[rxq->head].skb;
1053                 if (skb == NULL)
1054                         break;
1055
1056                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1057
1058                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1059                 if (pkt_len < 0)
1060                         break;
1061
1062                 rxq->buf[rxq->head].skb = NULL;
1063
1064                 pci_unmap_single(priv->pdev,
1065                                  pci_unmap_addr(&rxq->buf[rxq->head], dma),
1066                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1067                 pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1068
1069                 rxq->head++;
1070                 if (rxq->head == MWL8K_RX_DESCS)
1071                         rxq->head = 0;
1072
1073                 rxq->rxd_count--;
1074
1075                 skb_put(skb, pkt_len);
1076                 mwl8k_remove_dma_header(skb, qos);
1077
1078                 /*
1079                  * Check for a pending join operation.  Save a
1080                  * copy of the beacon and schedule a tasklet to
1081                  * send a FINALIZE_JOIN command to the firmware.
1082                  */
1083                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1084                         mwl8k_save_beacon(hw, skb);
1085
1086                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1087                 ieee80211_rx_irqsafe(hw, skb);
1088
1089                 processed++;
1090         }
1091
1092         return processed;
1093 }
1094
1095
1096 /*
1097  * Packet transmission.
1098  */
1099
1100 #define MWL8K_TXD_STATUS_OK                     0x00000001
1101 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1102 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1103 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1104 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1105
1106 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1107 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1108 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1109 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1110 #define MWL8K_QOS_EOSP                          0x0010
1111
1112 struct mwl8k_tx_desc {
1113         __le32 status;
1114         __u8 data_rate;
1115         __u8 tx_priority;
1116         __le16 qos_control;
1117         __le32 pkt_phys_addr;
1118         __le16 pkt_len;
1119         __u8 dest_MAC_addr[ETH_ALEN];
1120         __le32 next_txd_phys_addr;
1121         __le32 reserved;
1122         __le16 rate_info;
1123         __u8 peer_id;
1124         __u8 tx_frag_cnt;
1125 } __attribute__((packed));
1126
1127 #define MWL8K_TX_DESCS          128
1128
1129 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1130 {
1131         struct mwl8k_priv *priv = hw->priv;
1132         struct mwl8k_tx_queue *txq = priv->txq + index;
1133         int size;
1134         int i;
1135
1136         txq->len = 0;
1137         txq->head = 0;
1138         txq->tail = 0;
1139
1140         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1141
1142         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1143         if (txq->txd == NULL) {
1144                 printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
1145                        wiphy_name(hw->wiphy));
1146                 return -ENOMEM;
1147         }
1148         memset(txq->txd, 0, size);
1149
1150         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1151         if (txq->skb == NULL) {
1152                 printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
1153                        wiphy_name(hw->wiphy));
1154                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1155                 return -ENOMEM;
1156         }
1157         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1158
1159         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1160                 struct mwl8k_tx_desc *tx_desc;
1161                 int nexti;
1162
1163                 tx_desc = txq->txd + i;
1164                 nexti = (i + 1) % MWL8K_TX_DESCS;
1165
1166                 tx_desc->status = 0;
1167                 tx_desc->next_txd_phys_addr =
1168                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1169         }
1170
1171         return 0;
1172 }
1173
1174 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1175 {
1176         iowrite32(MWL8K_H2A_INT_PPA_READY,
1177                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1178         iowrite32(MWL8K_H2A_INT_DUMMY,
1179                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1180         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1181 }
1182
1183 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1184 {
1185         struct mwl8k_priv *priv = hw->priv;
1186         int i;
1187
1188         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1189                 struct mwl8k_tx_queue *txq = priv->txq + i;
1190                 int fw_owned = 0;
1191                 int drv_owned = 0;
1192                 int unused = 0;
1193                 int desc;
1194
1195                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1196                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1197                         u32 status;
1198
1199                         status = le32_to_cpu(tx_desc->status);
1200                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1201                                 fw_owned++;
1202                         else
1203                                 drv_owned++;
1204
1205                         if (tx_desc->pkt_len == 0)
1206                                 unused++;
1207                 }
1208
1209                 printk(KERN_ERR "%s: txq[%d] len=%d head=%d tail=%d "
1210                        "fw_owned=%d drv_owned=%d unused=%d\n",
1211                        wiphy_name(hw->wiphy), i,
1212                        txq->len, txq->head, txq->tail,
1213                        fw_owned, drv_owned, unused);
1214         }
1215 }
1216
1217 /*
1218  * Must be called with priv->fw_mutex held and tx queues stopped.
1219  */
1220 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1221
1222 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1223 {
1224         struct mwl8k_priv *priv = hw->priv;
1225         DECLARE_COMPLETION_ONSTACK(tx_wait);
1226         int retry;
1227         int rc;
1228
1229         might_sleep();
1230
1231         /*
1232          * The TX queues are stopped at this point, so this test
1233          * doesn't need to take ->tx_lock.
1234          */
1235         if (!priv->pending_tx_pkts)
1236                 return 0;
1237
1238         retry = 0;
1239         rc = 0;
1240
1241         spin_lock_bh(&priv->tx_lock);
1242         priv->tx_wait = &tx_wait;
1243         while (!rc) {
1244                 int oldcount;
1245                 unsigned long timeout;
1246
1247                 oldcount = priv->pending_tx_pkts;
1248
1249                 spin_unlock_bh(&priv->tx_lock);
1250                 timeout = wait_for_completion_timeout(&tx_wait,
1251                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1252                 spin_lock_bh(&priv->tx_lock);
1253
1254                 if (timeout) {
1255                         WARN_ON(priv->pending_tx_pkts);
1256                         if (retry) {
1257                                 printk(KERN_NOTICE "%s: tx rings drained\n",
1258                                        wiphy_name(hw->wiphy));
1259                         }
1260                         break;
1261                 }
1262
1263                 if (priv->pending_tx_pkts < oldcount) {
1264                         printk(KERN_NOTICE "%s: waiting for tx rings "
1265                                "to drain (%d -> %d pkts)\n",
1266                                wiphy_name(hw->wiphy), oldcount,
1267                                priv->pending_tx_pkts);
1268                         retry = 1;
1269                         continue;
1270                 }
1271
1272                 priv->tx_wait = NULL;
1273
1274                 printk(KERN_ERR "%s: tx rings stuck for %d ms\n",
1275                        wiphy_name(hw->wiphy), MWL8K_TX_WAIT_TIMEOUT_MS);
1276                 mwl8k_dump_tx_rings(hw);
1277
1278                 rc = -ETIMEDOUT;
1279         }
1280         spin_unlock_bh(&priv->tx_lock);
1281
1282         return rc;
1283 }
1284
1285 #define MWL8K_TXD_SUCCESS(status)                               \
1286         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1287                      MWL8K_TXD_STATUS_OK_RETRY |                \
1288                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1289
1290 static int
1291 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1292 {
1293         struct mwl8k_priv *priv = hw->priv;
1294         struct mwl8k_tx_queue *txq = priv->txq + index;
1295         int processed;
1296
1297         processed = 0;
1298         while (txq->len > 0 && limit--) {
1299                 int tx;
1300                 struct mwl8k_tx_desc *tx_desc;
1301                 unsigned long addr;
1302                 int size;
1303                 struct sk_buff *skb;
1304                 struct ieee80211_tx_info *info;
1305                 u32 status;
1306
1307                 tx = txq->head;
1308                 tx_desc = txq->txd + tx;
1309
1310                 status = le32_to_cpu(tx_desc->status);
1311
1312                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1313                         if (!force)
1314                                 break;
1315                         tx_desc->status &=
1316                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1317                 }
1318
1319                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1320                 BUG_ON(txq->len == 0);
1321                 txq->len--;
1322                 priv->pending_tx_pkts--;
1323
1324                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1325                 size = le16_to_cpu(tx_desc->pkt_len);
1326                 skb = txq->skb[tx];
1327                 txq->skb[tx] = NULL;
1328
1329                 BUG_ON(skb == NULL);
1330                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1331
1332                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1333
1334                 /* Mark descriptor as unused */
1335                 tx_desc->pkt_phys_addr = 0;
1336                 tx_desc->pkt_len = 0;
1337
1338                 info = IEEE80211_SKB_CB(skb);
1339                 ieee80211_tx_info_clear_status(info);
1340                 if (MWL8K_TXD_SUCCESS(status))
1341                         info->flags |= IEEE80211_TX_STAT_ACK;
1342
1343                 ieee80211_tx_status_irqsafe(hw, skb);
1344
1345                 processed++;
1346         }
1347
1348         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1349                 ieee80211_wake_queue(hw, index);
1350
1351         return processed;
1352 }
1353
1354 /* must be called only when the card's transmit is completely halted */
1355 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1356 {
1357         struct mwl8k_priv *priv = hw->priv;
1358         struct mwl8k_tx_queue *txq = priv->txq + index;
1359
1360         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1361
1362         kfree(txq->skb);
1363         txq->skb = NULL;
1364
1365         pci_free_consistent(priv->pdev,
1366                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1367                             txq->txd, txq->txd_dma);
1368         txq->txd = NULL;
1369 }
1370
1371 static int
1372 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1373 {
1374         struct mwl8k_priv *priv = hw->priv;
1375         struct ieee80211_tx_info *tx_info;
1376         struct mwl8k_vif *mwl8k_vif;
1377         struct ieee80211_hdr *wh;
1378         struct mwl8k_tx_queue *txq;
1379         struct mwl8k_tx_desc *tx;
1380         dma_addr_t dma;
1381         u32 txstatus;
1382         u8 txdatarate;
1383         u16 qos;
1384
1385         wh = (struct ieee80211_hdr *)skb->data;
1386         if (ieee80211_is_data_qos(wh->frame_control))
1387                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1388         else
1389                 qos = 0;
1390
1391         mwl8k_add_dma_header(skb);
1392         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1393
1394         tx_info = IEEE80211_SKB_CB(skb);
1395         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1396
1397         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1398                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1399                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1400                 mwl8k_vif->seqno += 0x10;
1401         }
1402
1403         /* Setup firmware control bit fields for each frame type.  */
1404         txstatus = 0;
1405         txdatarate = 0;
1406         if (ieee80211_is_mgmt(wh->frame_control) ||
1407             ieee80211_is_ctl(wh->frame_control)) {
1408                 txdatarate = 0;
1409                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1410         } else if (ieee80211_is_data(wh->frame_control)) {
1411                 txdatarate = 1;
1412                 if (is_multicast_ether_addr(wh->addr1))
1413                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1414
1415                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1416                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1417                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1418                 else
1419                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1420         }
1421
1422         dma = pci_map_single(priv->pdev, skb->data,
1423                                 skb->len, PCI_DMA_TODEVICE);
1424
1425         if (pci_dma_mapping_error(priv->pdev, dma)) {
1426                 printk(KERN_DEBUG "%s: failed to dma map skb, "
1427                        "dropping TX frame.\n", wiphy_name(hw->wiphy));
1428                 dev_kfree_skb(skb);
1429                 return NETDEV_TX_OK;
1430         }
1431
1432         spin_lock_bh(&priv->tx_lock);
1433
1434         txq = priv->txq + index;
1435
1436         BUG_ON(txq->skb[txq->tail] != NULL);
1437         txq->skb[txq->tail] = skb;
1438
1439         tx = txq->txd + txq->tail;
1440         tx->data_rate = txdatarate;
1441         tx->tx_priority = index;
1442         tx->qos_control = cpu_to_le16(qos);
1443         tx->pkt_phys_addr = cpu_to_le32(dma);
1444         tx->pkt_len = cpu_to_le16(skb->len);
1445         tx->rate_info = 0;
1446         if (!priv->ap_fw && tx_info->control.sta != NULL)
1447                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1448         else
1449                 tx->peer_id = 0;
1450         wmb();
1451         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1452
1453         txq->len++;
1454         priv->pending_tx_pkts++;
1455
1456         txq->tail++;
1457         if (txq->tail == MWL8K_TX_DESCS)
1458                 txq->tail = 0;
1459
1460         if (txq->head == txq->tail)
1461                 ieee80211_stop_queue(hw, index);
1462
1463         mwl8k_tx_start(priv);
1464
1465         spin_unlock_bh(&priv->tx_lock);
1466
1467         return NETDEV_TX_OK;
1468 }
1469
1470
1471 /*
1472  * Firmware access.
1473  *
1474  * We have the following requirements for issuing firmware commands:
1475  * - Some commands require that the packet transmit path is idle when
1476  *   the command is issued.  (For simplicity, we'll just quiesce the
1477  *   transmit path for every command.)
1478  * - There are certain sequences of commands that need to be issued to
1479  *   the hardware sequentially, with no other intervening commands.
1480  *
1481  * This leads to an implementation of a "firmware lock" as a mutex that
1482  * can be taken recursively, and which is taken by both the low-level
1483  * command submission function (mwl8k_post_cmd) as well as any users of
1484  * that function that require issuing of an atomic sequence of commands,
1485  * and quiesces the transmit path whenever it's taken.
1486  */
1487 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1488 {
1489         struct mwl8k_priv *priv = hw->priv;
1490
1491         if (priv->fw_mutex_owner != current) {
1492                 int rc;
1493
1494                 mutex_lock(&priv->fw_mutex);
1495                 ieee80211_stop_queues(hw);
1496
1497                 rc = mwl8k_tx_wait_empty(hw);
1498                 if (rc) {
1499                         ieee80211_wake_queues(hw);
1500                         mutex_unlock(&priv->fw_mutex);
1501
1502                         return rc;
1503                 }
1504
1505                 priv->fw_mutex_owner = current;
1506         }
1507
1508         priv->fw_mutex_depth++;
1509
1510         return 0;
1511 }
1512
1513 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1514 {
1515         struct mwl8k_priv *priv = hw->priv;
1516
1517         if (!--priv->fw_mutex_depth) {
1518                 ieee80211_wake_queues(hw);
1519                 priv->fw_mutex_owner = NULL;
1520                 mutex_unlock(&priv->fw_mutex);
1521         }
1522 }
1523
1524
1525 /*
1526  * Command processing.
1527  */
1528
1529 /* Timeout firmware commands after 10s */
1530 #define MWL8K_CMD_TIMEOUT_MS    10000
1531
1532 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1533 {
1534         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1535         struct mwl8k_priv *priv = hw->priv;
1536         void __iomem *regs = priv->regs;
1537         dma_addr_t dma_addr;
1538         unsigned int dma_size;
1539         int rc;
1540         unsigned long timeout = 0;
1541         u8 buf[32];
1542
1543         cmd->result = 0xffff;
1544         dma_size = le16_to_cpu(cmd->length);
1545         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1546                                   PCI_DMA_BIDIRECTIONAL);
1547         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1548                 return -ENOMEM;
1549
1550         rc = mwl8k_fw_lock(hw);
1551         if (rc) {
1552                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1553                                                 PCI_DMA_BIDIRECTIONAL);
1554                 return rc;
1555         }
1556
1557         priv->hostcmd_wait = &cmd_wait;
1558         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1559         iowrite32(MWL8K_H2A_INT_DOORBELL,
1560                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1561         iowrite32(MWL8K_H2A_INT_DUMMY,
1562                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1563
1564         timeout = wait_for_completion_timeout(&cmd_wait,
1565                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1566
1567         priv->hostcmd_wait = NULL;
1568
1569         mwl8k_fw_unlock(hw);
1570
1571         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1572                                         PCI_DMA_BIDIRECTIONAL);
1573
1574         if (!timeout) {
1575                 printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
1576                        wiphy_name(hw->wiphy),
1577                        mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1578                        MWL8K_CMD_TIMEOUT_MS);
1579                 rc = -ETIMEDOUT;
1580         } else {
1581                 int ms;
1582
1583                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1584
1585                 rc = cmd->result ? -EINVAL : 0;
1586                 if (rc)
1587                         printk(KERN_ERR "%s: Command %s error 0x%x\n",
1588                                wiphy_name(hw->wiphy),
1589                                mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1590                                le16_to_cpu(cmd->result));
1591                 else if (ms > 2000)
1592                         printk(KERN_NOTICE "%s: Command %s took %d ms\n",
1593                                wiphy_name(hw->wiphy),
1594                                mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1595                                ms);
1596         }
1597
1598         return rc;
1599 }
1600
1601 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1602                                  struct ieee80211_vif *vif,
1603                                  struct mwl8k_cmd_pkt *cmd)
1604 {
1605         if (vif != NULL)
1606                 cmd->macid = MWL8K_VIF(vif)->macid;
1607         return mwl8k_post_cmd(hw, cmd);
1608 }
1609
1610 /*
1611  * Setup code shared between STA and AP firmware images.
1612  */
1613 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1614 {
1615         struct mwl8k_priv *priv = hw->priv;
1616
1617         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1618         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1619
1620         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1621         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1622
1623         priv->band_24.band = IEEE80211_BAND_2GHZ;
1624         priv->band_24.channels = priv->channels_24;
1625         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1626         priv->band_24.bitrates = priv->rates_24;
1627         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1628
1629         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1630 }
1631
1632 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1633 {
1634         struct mwl8k_priv *priv = hw->priv;
1635
1636         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1637         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1638
1639         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1640         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1641
1642         priv->band_50.band = IEEE80211_BAND_5GHZ;
1643         priv->band_50.channels = priv->channels_50;
1644         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1645         priv->band_50.bitrates = priv->rates_50;
1646         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1647
1648         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1649 }
1650
1651 /*
1652  * CMD_GET_HW_SPEC (STA version).
1653  */
1654 struct mwl8k_cmd_get_hw_spec_sta {
1655         struct mwl8k_cmd_pkt header;
1656         __u8 hw_rev;
1657         __u8 host_interface;
1658         __le16 num_mcaddrs;
1659         __u8 perm_addr[ETH_ALEN];
1660         __le16 region_code;
1661         __le32 fw_rev;
1662         __le32 ps_cookie;
1663         __le32 caps;
1664         __u8 mcs_bitmap[16];
1665         __le32 rx_queue_ptr;
1666         __le32 num_tx_queues;
1667         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1668         __le32 caps2;
1669         __le32 num_tx_desc_per_queue;
1670         __le32 total_rxd;
1671 } __attribute__((packed));
1672
1673 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1674 #define MWL8K_CAP_GREENFIELD            0x08000000
1675 #define MWL8K_CAP_AMPDU                 0x04000000
1676 #define MWL8K_CAP_RX_STBC               0x01000000
1677 #define MWL8K_CAP_TX_STBC               0x00800000
1678 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1679 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1680 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1681 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1682 #define MWL8K_CAP_DELAY_BA              0x00003000
1683 #define MWL8K_CAP_MIMO                  0x00000200
1684 #define MWL8K_CAP_40MHZ                 0x00000100
1685 #define MWL8K_CAP_BAND_MASK             0x00000007
1686 #define MWL8K_CAP_5GHZ                  0x00000004
1687 #define MWL8K_CAP_2GHZ4                 0x00000001
1688
1689 static void
1690 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1691                   struct ieee80211_supported_band *band, u32 cap)
1692 {
1693         int rx_streams;
1694         int tx_streams;
1695
1696         band->ht_cap.ht_supported = 1;
1697
1698         if (cap & MWL8K_CAP_MAX_AMSDU)
1699                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1700         if (cap & MWL8K_CAP_GREENFIELD)
1701                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1702         if (cap & MWL8K_CAP_AMPDU) {
1703                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1704                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1705                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1706         }
1707         if (cap & MWL8K_CAP_RX_STBC)
1708                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1709         if (cap & MWL8K_CAP_TX_STBC)
1710                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1711         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1712                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1713         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1714                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1715         if (cap & MWL8K_CAP_DELAY_BA)
1716                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1717         if (cap & MWL8K_CAP_40MHZ)
1718                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1719
1720         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1721         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1722
1723         band->ht_cap.mcs.rx_mask[0] = 0xff;
1724         if (rx_streams >= 2)
1725                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1726         if (rx_streams >= 3)
1727                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1728         band->ht_cap.mcs.rx_mask[4] = 0x01;
1729         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1730
1731         if (rx_streams != tx_streams) {
1732                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1733                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1734                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1735         }
1736 }
1737
1738 static void
1739 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1740 {
1741         struct mwl8k_priv *priv = hw->priv;
1742
1743         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1744                 mwl8k_setup_2ghz_band(hw);
1745                 if (caps & MWL8K_CAP_MIMO)
1746                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1747         }
1748
1749         if (caps & MWL8K_CAP_5GHZ) {
1750                 mwl8k_setup_5ghz_band(hw);
1751                 if (caps & MWL8K_CAP_MIMO)
1752                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1753         }
1754 }
1755
1756 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1757 {
1758         struct mwl8k_priv *priv = hw->priv;
1759         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1760         int rc;
1761         int i;
1762
1763         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1764         if (cmd == NULL)
1765                 return -ENOMEM;
1766
1767         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1768         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1769
1770         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1771         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1772         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1773         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1774         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1775                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1776         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1777         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1778
1779         rc = mwl8k_post_cmd(hw, &cmd->header);
1780
1781         if (!rc) {
1782                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1783                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1784                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1785                 priv->hw_rev = cmd->hw_rev;
1786                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1787                 priv->ap_macids_supported = 0x00000000;
1788                 priv->sta_macids_supported = 0x00000001;
1789         }
1790
1791         kfree(cmd);
1792         return rc;
1793 }
1794
1795 /*
1796  * CMD_GET_HW_SPEC (AP version).
1797  */
1798 struct mwl8k_cmd_get_hw_spec_ap {
1799         struct mwl8k_cmd_pkt header;
1800         __u8 hw_rev;
1801         __u8 host_interface;
1802         __le16 num_wcb;
1803         __le16 num_mcaddrs;
1804         __u8 perm_addr[ETH_ALEN];
1805         __le16 region_code;
1806         __le16 num_antenna;
1807         __le32 fw_rev;
1808         __le32 wcbbase0;
1809         __le32 rxwrptr;
1810         __le32 rxrdptr;
1811         __le32 ps_cookie;
1812         __le32 wcbbase1;
1813         __le32 wcbbase2;
1814         __le32 wcbbase3;
1815 } __attribute__((packed));
1816
1817 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1818 {
1819         struct mwl8k_priv *priv = hw->priv;
1820         struct mwl8k_cmd_get_hw_spec_ap *cmd;
1821         int rc;
1822
1823         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1824         if (cmd == NULL)
1825                 return -ENOMEM;
1826
1827         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1828         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1829
1830         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1831         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1832
1833         rc = mwl8k_post_cmd(hw, &cmd->header);
1834
1835         if (!rc) {
1836                 int off;
1837
1838                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1839                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1840                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1841                 priv->hw_rev = cmd->hw_rev;
1842                 mwl8k_setup_2ghz_band(hw);
1843                 priv->ap_macids_supported = 0x000000ff;
1844                 priv->sta_macids_supported = 0x00000000;
1845
1846                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1847                 iowrite32(cpu_to_le32(priv->txq[0].txd_dma), priv->sram + off);
1848
1849                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1850                 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1851
1852                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1853                 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1854
1855                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1856                 iowrite32(cpu_to_le32(priv->txq[1].txd_dma), priv->sram + off);
1857
1858                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1859                 iowrite32(cpu_to_le32(priv->txq[2].txd_dma), priv->sram + off);
1860
1861                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1862                 iowrite32(cpu_to_le32(priv->txq[3].txd_dma), priv->sram + off);
1863         }
1864
1865         kfree(cmd);
1866         return rc;
1867 }
1868
1869 /*
1870  * CMD_SET_HW_SPEC.
1871  */
1872 struct mwl8k_cmd_set_hw_spec {
1873         struct mwl8k_cmd_pkt header;
1874         __u8 hw_rev;
1875         __u8 host_interface;
1876         __le16 num_mcaddrs;
1877         __u8 perm_addr[ETH_ALEN];
1878         __le16 region_code;
1879         __le32 fw_rev;
1880         __le32 ps_cookie;
1881         __le32 caps;
1882         __le32 rx_queue_ptr;
1883         __le32 num_tx_queues;
1884         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1885         __le32 flags;
1886         __le32 num_tx_desc_per_queue;
1887         __le32 total_rxd;
1888 } __attribute__((packed));
1889
1890 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
1891 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
1892 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
1893
1894 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1895 {
1896         struct mwl8k_priv *priv = hw->priv;
1897         struct mwl8k_cmd_set_hw_spec *cmd;
1898         int rc;
1899         int i;
1900
1901         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1902         if (cmd == NULL)
1903                 return -ENOMEM;
1904
1905         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1906         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1907
1908         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1909         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1910         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1911         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1912                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1913         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
1914                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
1915                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
1916         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1917         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1918
1919         rc = mwl8k_post_cmd(hw, &cmd->header);
1920         kfree(cmd);
1921
1922         return rc;
1923 }
1924
1925 /*
1926  * CMD_MAC_MULTICAST_ADR.
1927  */
1928 struct mwl8k_cmd_mac_multicast_adr {
1929         struct mwl8k_cmd_pkt header;
1930         __le16 action;
1931         __le16 numaddr;
1932         __u8 addr[0][ETH_ALEN];
1933 };
1934
1935 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
1936 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
1937 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
1938 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
1939
1940 static struct mwl8k_cmd_pkt *
1941 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1942                               int mc_count, struct dev_addr_list *mclist)
1943 {
1944         struct mwl8k_priv *priv = hw->priv;
1945         struct mwl8k_cmd_mac_multicast_adr *cmd;
1946         int size;
1947
1948         if (allmulti || mc_count > priv->num_mcaddrs) {
1949                 allmulti = 1;
1950                 mc_count = 0;
1951         }
1952
1953         size = sizeof(*cmd) + mc_count * ETH_ALEN;
1954
1955         cmd = kzalloc(size, GFP_ATOMIC);
1956         if (cmd == NULL)
1957                 return NULL;
1958
1959         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
1960         cmd->header.length = cpu_to_le16(size);
1961         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
1962                                   MWL8K_ENABLE_RX_BROADCAST);
1963
1964         if (allmulti) {
1965                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
1966         } else if (mc_count) {
1967                 int i;
1968
1969                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
1970                 cmd->numaddr = cpu_to_le16(mc_count);
1971                 for (i = 0; i < mc_count && mclist; i++) {
1972                         if (mclist->da_addrlen != ETH_ALEN) {
1973                                 kfree(cmd);
1974                                 return NULL;
1975                         }
1976                         memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
1977                         mclist = mclist->next;
1978                 }
1979         }
1980
1981         return &cmd->header;
1982 }
1983
1984 /*
1985  * CMD_GET_STAT.
1986  */
1987 struct mwl8k_cmd_get_stat {
1988         struct mwl8k_cmd_pkt header;
1989         __le32 stats[64];
1990 } __attribute__((packed));
1991
1992 #define MWL8K_STAT_ACK_FAILURE  9
1993 #define MWL8K_STAT_RTS_FAILURE  12
1994 #define MWL8K_STAT_FCS_ERROR    24
1995 #define MWL8K_STAT_RTS_SUCCESS  11
1996
1997 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
1998                               struct ieee80211_low_level_stats *stats)
1999 {
2000         struct mwl8k_cmd_get_stat *cmd;
2001         int rc;
2002
2003         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2004         if (cmd == NULL)
2005                 return -ENOMEM;
2006
2007         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2008         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2009
2010         rc = mwl8k_post_cmd(hw, &cmd->header);
2011         if (!rc) {
2012                 stats->dot11ACKFailureCount =
2013                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2014                 stats->dot11RTSFailureCount =
2015                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2016                 stats->dot11FCSErrorCount =
2017                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2018                 stats->dot11RTSSuccessCount =
2019                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2020         }
2021         kfree(cmd);
2022
2023         return rc;
2024 }
2025
2026 /*
2027  * CMD_RADIO_CONTROL.
2028  */
2029 struct mwl8k_cmd_radio_control {
2030         struct mwl8k_cmd_pkt header;
2031         __le16 action;
2032         __le16 control;
2033         __le16 radio_on;
2034 } __attribute__((packed));
2035
2036 static int
2037 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2038 {
2039         struct mwl8k_priv *priv = hw->priv;
2040         struct mwl8k_cmd_radio_control *cmd;
2041         int rc;
2042
2043         if (enable == priv->radio_on && !force)
2044                 return 0;
2045
2046         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2047         if (cmd == NULL)
2048                 return -ENOMEM;
2049
2050         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2051         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2052         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2053         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2054         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2055
2056         rc = mwl8k_post_cmd(hw, &cmd->header);
2057         kfree(cmd);
2058
2059         if (!rc)
2060                 priv->radio_on = enable;
2061
2062         return rc;
2063 }
2064
2065 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2066 {
2067         return mwl8k_cmd_radio_control(hw, 0, 0);
2068 }
2069
2070 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2071 {
2072         return mwl8k_cmd_radio_control(hw, 1, 0);
2073 }
2074
2075 static int
2076 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2077 {
2078         struct mwl8k_priv *priv = hw->priv;
2079
2080         priv->radio_short_preamble = short_preamble;
2081
2082         return mwl8k_cmd_radio_control(hw, 1, 1);
2083 }
2084
2085 /*
2086  * CMD_RF_TX_POWER.
2087  */
2088 #define MWL8K_TX_POWER_LEVEL_TOTAL      8
2089
2090 struct mwl8k_cmd_rf_tx_power {
2091         struct mwl8k_cmd_pkt header;
2092         __le16 action;
2093         __le16 support_level;
2094         __le16 current_level;
2095         __le16 reserved;
2096         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2097 } __attribute__((packed));
2098
2099 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2100 {
2101         struct mwl8k_cmd_rf_tx_power *cmd;
2102         int rc;
2103
2104         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2105         if (cmd == NULL)
2106                 return -ENOMEM;
2107
2108         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2109         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2110         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2111         cmd->support_level = cpu_to_le16(dBm);
2112
2113         rc = mwl8k_post_cmd(hw, &cmd->header);
2114         kfree(cmd);
2115
2116         return rc;
2117 }
2118
2119 /*
2120  * CMD_RF_ANTENNA.
2121  */
2122 struct mwl8k_cmd_rf_antenna {
2123         struct mwl8k_cmd_pkt header;
2124         __le16 antenna;
2125         __le16 mode;
2126 } __attribute__((packed));
2127
2128 #define MWL8K_RF_ANTENNA_RX             1
2129 #define MWL8K_RF_ANTENNA_TX             2
2130
2131 static int
2132 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2133 {
2134         struct mwl8k_cmd_rf_antenna *cmd;
2135         int rc;
2136
2137         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2138         if (cmd == NULL)
2139                 return -ENOMEM;
2140
2141         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2142         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2143         cmd->antenna = cpu_to_le16(antenna);
2144         cmd->mode = cpu_to_le16(mask);
2145
2146         rc = mwl8k_post_cmd(hw, &cmd->header);
2147         kfree(cmd);
2148
2149         return rc;
2150 }
2151
2152 /*
2153  * CMD_SET_BEACON.
2154  */
2155 struct mwl8k_cmd_set_beacon {
2156         struct mwl8k_cmd_pkt header;
2157         __le16 beacon_len;
2158         __u8 beacon[0];
2159 };
2160
2161 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2162                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2163 {
2164         struct mwl8k_cmd_set_beacon *cmd;
2165         int rc;
2166
2167         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2168         if (cmd == NULL)
2169                 return -ENOMEM;
2170
2171         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2172         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2173         cmd->beacon_len = cpu_to_le16(len);
2174         memcpy(cmd->beacon, beacon, len);
2175
2176         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2177         kfree(cmd);
2178
2179         return rc;
2180 }
2181
2182 /*
2183  * CMD_SET_PRE_SCAN.
2184  */
2185 struct mwl8k_cmd_set_pre_scan {
2186         struct mwl8k_cmd_pkt header;
2187 } __attribute__((packed));
2188
2189 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2190 {
2191         struct mwl8k_cmd_set_pre_scan *cmd;
2192         int rc;
2193
2194         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2195         if (cmd == NULL)
2196                 return -ENOMEM;
2197
2198         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2199         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2200
2201         rc = mwl8k_post_cmd(hw, &cmd->header);
2202         kfree(cmd);
2203
2204         return rc;
2205 }
2206
2207 /*
2208  * CMD_SET_POST_SCAN.
2209  */
2210 struct mwl8k_cmd_set_post_scan {
2211         struct mwl8k_cmd_pkt header;
2212         __le32 isibss;
2213         __u8 bssid[ETH_ALEN];
2214 } __attribute__((packed));
2215
2216 static int
2217 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2218 {
2219         struct mwl8k_cmd_set_post_scan *cmd;
2220         int rc;
2221
2222         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2223         if (cmd == NULL)
2224                 return -ENOMEM;
2225
2226         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2227         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2228         cmd->isibss = 0;
2229         memcpy(cmd->bssid, mac, ETH_ALEN);
2230
2231         rc = mwl8k_post_cmd(hw, &cmd->header);
2232         kfree(cmd);
2233
2234         return rc;
2235 }
2236
2237 /*
2238  * CMD_SET_RF_CHANNEL.
2239  */
2240 struct mwl8k_cmd_set_rf_channel {
2241         struct mwl8k_cmd_pkt header;
2242         __le16 action;
2243         __u8 current_channel;
2244         __le32 channel_flags;
2245 } __attribute__((packed));
2246
2247 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2248                                     struct ieee80211_conf *conf)
2249 {
2250         struct ieee80211_channel *channel = conf->channel;
2251         struct mwl8k_cmd_set_rf_channel *cmd;
2252         int rc;
2253
2254         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2255         if (cmd == NULL)
2256                 return -ENOMEM;
2257
2258         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2259         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2260         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2261         cmd->current_channel = channel->hw_value;
2262
2263         if (channel->band == IEEE80211_BAND_2GHZ)
2264                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2265         else if (channel->band == IEEE80211_BAND_5GHZ)
2266                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2267
2268         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2269             conf->channel_type == NL80211_CHAN_HT20)
2270                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2271         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2272                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2273         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2274                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2275
2276         rc = mwl8k_post_cmd(hw, &cmd->header);
2277         kfree(cmd);
2278
2279         return rc;
2280 }
2281
2282 /*
2283  * CMD_SET_AID.
2284  */
2285 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2286 #define MWL8K_FRAME_PROT_11G                            0x07
2287 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2288 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2289
2290 struct mwl8k_cmd_update_set_aid {
2291         struct  mwl8k_cmd_pkt header;
2292         __le16  aid;
2293
2294          /* AP's MAC address (BSSID) */
2295         __u8    bssid[ETH_ALEN];
2296         __le16  protection_mode;
2297         __u8    supp_rates[14];
2298 } __attribute__((packed));
2299
2300 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2301 {
2302         int i;
2303         int j;
2304
2305         /*
2306          * Clear nonstandard rates 4 and 13.
2307          */
2308         mask &= 0x1fef;
2309
2310         for (i = 0, j = 0; i < 14; i++) {
2311                 if (mask & (1 << i))
2312                         rates[j++] = mwl8k_rates_24[i].hw_value;
2313         }
2314 }
2315
2316 static int
2317 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2318                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2319 {
2320         struct mwl8k_cmd_update_set_aid *cmd;
2321         u16 prot_mode;
2322         int rc;
2323
2324         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2325         if (cmd == NULL)
2326                 return -ENOMEM;
2327
2328         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2329         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2330         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2331         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2332
2333         if (vif->bss_conf.use_cts_prot) {
2334                 prot_mode = MWL8K_FRAME_PROT_11G;
2335         } else {
2336                 switch (vif->bss_conf.ht_operation_mode &
2337                         IEEE80211_HT_OP_MODE_PROTECTION) {
2338                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2339                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2340                         break;
2341                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2342                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2343                         break;
2344                 default:
2345                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2346                         break;
2347                 }
2348         }
2349         cmd->protection_mode = cpu_to_le16(prot_mode);
2350
2351         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2352
2353         rc = mwl8k_post_cmd(hw, &cmd->header);
2354         kfree(cmd);
2355
2356         return rc;
2357 }
2358
2359 /*
2360  * CMD_SET_RATE.
2361  */
2362 struct mwl8k_cmd_set_rate {
2363         struct  mwl8k_cmd_pkt header;
2364         __u8    legacy_rates[14];
2365
2366         /* Bitmap for supported MCS codes.  */
2367         __u8    mcs_set[16];
2368         __u8    reserved[16];
2369 } __attribute__((packed));
2370
2371 static int
2372 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2373                    u32 legacy_rate_mask, u8 *mcs_rates)
2374 {
2375         struct mwl8k_cmd_set_rate *cmd;
2376         int rc;
2377
2378         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2379         if (cmd == NULL)
2380                 return -ENOMEM;
2381
2382         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2383         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2384         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2385         memcpy(cmd->mcs_set, mcs_rates, 16);
2386
2387         rc = mwl8k_post_cmd(hw, &cmd->header);
2388         kfree(cmd);
2389
2390         return rc;
2391 }
2392
2393 /*
2394  * CMD_FINALIZE_JOIN.
2395  */
2396 #define MWL8K_FJ_BEACON_MAXLEN  128
2397
2398 struct mwl8k_cmd_finalize_join {
2399         struct mwl8k_cmd_pkt header;
2400         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2401         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2402 } __attribute__((packed));
2403
2404 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2405                                    int framelen, int dtim)
2406 {
2407         struct mwl8k_cmd_finalize_join *cmd;
2408         struct ieee80211_mgmt *payload = frame;
2409         int payload_len;
2410         int rc;
2411
2412         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2413         if (cmd == NULL)
2414                 return -ENOMEM;
2415
2416         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2417         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2418         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2419
2420         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2421         if (payload_len < 0)
2422                 payload_len = 0;
2423         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2424                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2425
2426         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2427
2428         rc = mwl8k_post_cmd(hw, &cmd->header);
2429         kfree(cmd);
2430
2431         return rc;
2432 }
2433
2434 /*
2435  * CMD_SET_RTS_THRESHOLD.
2436  */
2437 struct mwl8k_cmd_set_rts_threshold {
2438         struct mwl8k_cmd_pkt header;
2439         __le16 action;
2440         __le16 threshold;
2441 } __attribute__((packed));
2442
2443 static int
2444 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2445 {
2446         struct mwl8k_cmd_set_rts_threshold *cmd;
2447         int rc;
2448
2449         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2450         if (cmd == NULL)
2451                 return -ENOMEM;
2452
2453         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2454         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2455         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2456         cmd->threshold = cpu_to_le16(rts_thresh);
2457
2458         rc = mwl8k_post_cmd(hw, &cmd->header);
2459         kfree(cmd);
2460
2461         return rc;
2462 }
2463
2464 /*
2465  * CMD_SET_SLOT.
2466  */
2467 struct mwl8k_cmd_set_slot {
2468         struct mwl8k_cmd_pkt header;
2469         __le16 action;
2470         __u8 short_slot;
2471 } __attribute__((packed));
2472
2473 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2474 {
2475         struct mwl8k_cmd_set_slot *cmd;
2476         int rc;
2477
2478         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2479         if (cmd == NULL)
2480                 return -ENOMEM;
2481
2482         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2483         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2484         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2485         cmd->short_slot = short_slot_time;
2486
2487         rc = mwl8k_post_cmd(hw, &cmd->header);
2488         kfree(cmd);
2489
2490         return rc;
2491 }
2492
2493 /*
2494  * CMD_SET_EDCA_PARAMS.
2495  */
2496 struct mwl8k_cmd_set_edca_params {
2497         struct mwl8k_cmd_pkt header;
2498
2499         /* See MWL8K_SET_EDCA_XXX below */
2500         __le16 action;
2501
2502         /* TX opportunity in units of 32 us */
2503         __le16 txop;
2504
2505         union {
2506                 struct {
2507                         /* Log exponent of max contention period: 0...15 */
2508                         __le32 log_cw_max;
2509
2510                         /* Log exponent of min contention period: 0...15 */
2511                         __le32 log_cw_min;
2512
2513                         /* Adaptive interframe spacing in units of 32us */
2514                         __u8 aifs;
2515
2516                         /* TX queue to configure */
2517                         __u8 txq;
2518                 } ap;
2519                 struct {
2520                         /* Log exponent of max contention period: 0...15 */
2521                         __u8 log_cw_max;
2522
2523                         /* Log exponent of min contention period: 0...15 */
2524                         __u8 log_cw_min;
2525
2526                         /* Adaptive interframe spacing in units of 32us */
2527                         __u8 aifs;
2528
2529                         /* TX queue to configure */
2530                         __u8 txq;
2531                 } sta;
2532         };
2533 } __attribute__((packed));
2534
2535 #define MWL8K_SET_EDCA_CW       0x01
2536 #define MWL8K_SET_EDCA_TXOP     0x02
2537 #define MWL8K_SET_EDCA_AIFS     0x04
2538
2539 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2540                                  MWL8K_SET_EDCA_TXOP | \
2541                                  MWL8K_SET_EDCA_AIFS)
2542
2543 static int
2544 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2545                           __u16 cw_min, __u16 cw_max,
2546                           __u8 aifs, __u16 txop)
2547 {
2548         struct mwl8k_priv *priv = hw->priv;
2549         struct mwl8k_cmd_set_edca_params *cmd;
2550         int rc;
2551
2552         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2553         if (cmd == NULL)
2554                 return -ENOMEM;
2555
2556         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2557         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2558         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2559         cmd->txop = cpu_to_le16(txop);
2560         if (priv->ap_fw) {
2561                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2562                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2563                 cmd->ap.aifs = aifs;
2564                 cmd->ap.txq = qnum;
2565         } else {
2566                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2567                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2568                 cmd->sta.aifs = aifs;
2569                 cmd->sta.txq = qnum;
2570         }
2571
2572         rc = mwl8k_post_cmd(hw, &cmd->header);
2573         kfree(cmd);
2574
2575         return rc;
2576 }
2577
2578 /*
2579  * CMD_SET_WMM_MODE.
2580  */
2581 struct mwl8k_cmd_set_wmm_mode {
2582         struct mwl8k_cmd_pkt header;
2583         __le16 action;
2584 } __attribute__((packed));
2585
2586 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2587 {
2588         struct mwl8k_priv *priv = hw->priv;
2589         struct mwl8k_cmd_set_wmm_mode *cmd;
2590         int rc;
2591
2592         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2593         if (cmd == NULL)
2594                 return -ENOMEM;
2595
2596         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2597         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2598         cmd->action = cpu_to_le16(!!enable);
2599
2600         rc = mwl8k_post_cmd(hw, &cmd->header);
2601         kfree(cmd);
2602
2603         if (!rc)
2604                 priv->wmm_enabled = enable;
2605
2606         return rc;
2607 }
2608
2609 /*
2610  * CMD_MIMO_CONFIG.
2611  */
2612 struct mwl8k_cmd_mimo_config {
2613         struct mwl8k_cmd_pkt header;
2614         __le32 action;
2615         __u8 rx_antenna_map;
2616         __u8 tx_antenna_map;
2617 } __attribute__((packed));
2618
2619 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2620 {
2621         struct mwl8k_cmd_mimo_config *cmd;
2622         int rc;
2623
2624         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2625         if (cmd == NULL)
2626                 return -ENOMEM;
2627
2628         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2629         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2630         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2631         cmd->rx_antenna_map = rx;
2632         cmd->tx_antenna_map = tx;
2633
2634         rc = mwl8k_post_cmd(hw, &cmd->header);
2635         kfree(cmd);
2636
2637         return rc;
2638 }
2639
2640 /*
2641  * CMD_USE_FIXED_RATE (STA version).
2642  */
2643 struct mwl8k_cmd_use_fixed_rate_sta {
2644         struct mwl8k_cmd_pkt header;
2645         __le32 action;
2646         __le32 allow_rate_drop;
2647         __le32 num_rates;
2648         struct {
2649                 __le32 is_ht_rate;
2650                 __le32 enable_retry;
2651                 __le32 rate;
2652                 __le32 retry_count;
2653         } rate_entry[8];
2654         __le32 rate_type;
2655         __le32 reserved1;
2656         __le32 reserved2;
2657 } __attribute__((packed));
2658
2659 #define MWL8K_USE_AUTO_RATE     0x0002
2660 #define MWL8K_UCAST_RATE        0
2661
2662 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2663 {
2664         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2665         int rc;
2666
2667         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2668         if (cmd == NULL)
2669                 return -ENOMEM;
2670
2671         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2672         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2673         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2674         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2675
2676         rc = mwl8k_post_cmd(hw, &cmd->header);
2677         kfree(cmd);
2678
2679         return rc;
2680 }
2681
2682 /*
2683  * CMD_USE_FIXED_RATE (AP version).
2684  */
2685 struct mwl8k_cmd_use_fixed_rate_ap {
2686         struct mwl8k_cmd_pkt header;
2687         __le32 action;
2688         __le32 allow_rate_drop;
2689         __le32 num_rates;
2690         struct mwl8k_rate_entry_ap {
2691                 __le32 is_ht_rate;
2692                 __le32 enable_retry;
2693                 __le32 rate;
2694                 __le32 retry_count;
2695         } rate_entry[4];
2696         u8 multicast_rate;
2697         u8 multicast_rate_type;
2698         u8 management_rate;
2699 } __attribute__((packed));
2700
2701 static int
2702 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2703 {
2704         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2705         int rc;
2706
2707         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2708         if (cmd == NULL)
2709                 return -ENOMEM;
2710
2711         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2712         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2713         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2714         cmd->multicast_rate = mcast;
2715         cmd->management_rate = mgmt;
2716
2717         rc = mwl8k_post_cmd(hw, &cmd->header);
2718         kfree(cmd);
2719
2720         return rc;
2721 }
2722
2723 /*
2724  * CMD_ENABLE_SNIFFER.
2725  */
2726 struct mwl8k_cmd_enable_sniffer {
2727         struct mwl8k_cmd_pkt header;
2728         __le32 action;
2729 } __attribute__((packed));
2730
2731 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2732 {
2733         struct mwl8k_cmd_enable_sniffer *cmd;
2734         int rc;
2735
2736         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2737         if (cmd == NULL)
2738                 return -ENOMEM;
2739
2740         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2741         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2742         cmd->action = cpu_to_le32(!!enable);
2743
2744         rc = mwl8k_post_cmd(hw, &cmd->header);
2745         kfree(cmd);
2746
2747         return rc;
2748 }
2749
2750 /*
2751  * CMD_SET_MAC_ADDR.
2752  */
2753 struct mwl8k_cmd_set_mac_addr {
2754         struct mwl8k_cmd_pkt header;
2755         union {
2756                 struct {
2757                         __le16 mac_type;
2758                         __u8 mac_addr[ETH_ALEN];
2759                 } mbss;
2760                 __u8 mac_addr[ETH_ALEN];
2761         };
2762 } __attribute__((packed));
2763
2764 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
2765 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
2766 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
2767 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
2768
2769 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
2770                                   struct ieee80211_vif *vif, u8 *mac)
2771 {
2772         struct mwl8k_priv *priv = hw->priv;
2773         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2774         struct mwl8k_cmd_set_mac_addr *cmd;
2775         int mac_type;
2776         int rc;
2777
2778         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2779         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
2780                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
2781                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
2782                 else
2783                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
2784         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
2785                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
2786                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2787                 else
2788                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
2789         }
2790
2791         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2792         if (cmd == NULL)
2793                 return -ENOMEM;
2794
2795         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2796         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2797         if (priv->ap_fw) {
2798                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
2799                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2800         } else {
2801                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2802         }
2803
2804         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2805         kfree(cmd);
2806
2807         return rc;
2808 }
2809
2810 /*
2811  * CMD_SET_RATEADAPT_MODE.
2812  */
2813 struct mwl8k_cmd_set_rate_adapt_mode {
2814         struct mwl8k_cmd_pkt header;
2815         __le16 action;
2816         __le16 mode;
2817 } __attribute__((packed));
2818
2819 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2820 {
2821         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2822         int rc;
2823
2824         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2825         if (cmd == NULL)
2826                 return -ENOMEM;
2827
2828         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2829         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2830         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2831         cmd->mode = cpu_to_le16(mode);
2832
2833         rc = mwl8k_post_cmd(hw, &cmd->header);
2834         kfree(cmd);
2835
2836         return rc;
2837 }
2838
2839 /*
2840  * CMD_BSS_START.
2841  */
2842 struct mwl8k_cmd_bss_start {
2843         struct mwl8k_cmd_pkt header;
2844         __le32 enable;
2845 } __attribute__((packed));
2846
2847 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
2848                                struct ieee80211_vif *vif, int enable)
2849 {
2850         struct mwl8k_cmd_bss_start *cmd;
2851         int rc;
2852
2853         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2854         if (cmd == NULL)
2855                 return -ENOMEM;
2856
2857         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
2858         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2859         cmd->enable = cpu_to_le32(enable);
2860
2861         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2862         kfree(cmd);
2863
2864         return rc;
2865 }
2866
2867 /*
2868  * CMD_SET_NEW_STN.
2869  */
2870 struct mwl8k_cmd_set_new_stn {
2871         struct mwl8k_cmd_pkt header;
2872         __le16 aid;
2873         __u8 mac_addr[6];
2874         __le16 stn_id;
2875         __le16 action;
2876         __le16 rsvd;
2877         __le32 legacy_rates;
2878         __u8 ht_rates[4];
2879         __le16 cap_info;
2880         __le16 ht_capabilities_info;
2881         __u8 mac_ht_param_info;
2882         __u8 rev;
2883         __u8 control_channel;
2884         __u8 add_channel;
2885         __le16 op_mode;
2886         __le16 stbc;
2887         __u8 add_qos_info;
2888         __u8 is_qos_sta;
2889         __le32 fw_sta_ptr;
2890 } __attribute__((packed));
2891
2892 #define MWL8K_STA_ACTION_ADD            0
2893 #define MWL8K_STA_ACTION_REMOVE         2
2894
2895 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
2896                                      struct ieee80211_vif *vif,
2897                                      struct ieee80211_sta *sta)
2898 {
2899         struct mwl8k_cmd_set_new_stn *cmd;
2900         u32 rates;
2901         int rc;
2902
2903         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2904         if (cmd == NULL)
2905                 return -ENOMEM;
2906
2907         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2908         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2909         cmd->aid = cpu_to_le16(sta->aid);
2910         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
2911         cmd->stn_id = cpu_to_le16(sta->aid);
2912         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
2913         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
2914                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
2915         else
2916                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
2917         cmd->legacy_rates = cpu_to_le32(rates);
2918         if (sta->ht_cap.ht_supported) {
2919                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
2920                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
2921                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
2922                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
2923                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
2924                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
2925                         ((sta->ht_cap.ampdu_density & 7) << 2);
2926                 cmd->is_qos_sta = 1;
2927         }
2928
2929         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2930         kfree(cmd);
2931
2932         return rc;
2933 }
2934
2935 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
2936                                           struct ieee80211_vif *vif)
2937 {
2938         struct mwl8k_cmd_set_new_stn *cmd;
2939         int rc;
2940
2941         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2942         if (cmd == NULL)
2943                 return -ENOMEM;
2944
2945         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2946         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2947         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
2948
2949         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2950         kfree(cmd);
2951
2952         return rc;
2953 }
2954
2955 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
2956                                      struct ieee80211_vif *vif, u8 *addr)
2957 {
2958         struct mwl8k_cmd_set_new_stn *cmd;
2959         int rc;
2960
2961         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2962         if (cmd == NULL)
2963                 return -ENOMEM;
2964
2965         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2966         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2967         memcpy(cmd->mac_addr, addr, ETH_ALEN);
2968         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
2969
2970         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2971         kfree(cmd);
2972
2973         return rc;
2974 }
2975
2976 /*
2977  * CMD_UPDATE_STADB.
2978  */
2979 struct ewc_ht_info {
2980         __le16  control1;
2981         __le16  control2;
2982         __le16  control3;
2983 } __attribute__((packed));
2984
2985 struct peer_capability_info {
2986         /* Peer type - AP vs. STA.  */
2987         __u8    peer_type;
2988
2989         /* Basic 802.11 capabilities from assoc resp.  */
2990         __le16  basic_caps;
2991
2992         /* Set if peer supports 802.11n high throughput (HT).  */
2993         __u8    ht_support;
2994
2995         /* Valid if HT is supported.  */
2996         __le16  ht_caps;
2997         __u8    extended_ht_caps;
2998         struct ewc_ht_info      ewc_info;
2999
3000         /* Legacy rate table. Intersection of our rates and peer rates.  */
3001         __u8    legacy_rates[12];
3002
3003         /* HT rate table. Intersection of our rates and peer rates.  */
3004         __u8    ht_rates[16];
3005         __u8    pad[16];
3006
3007         /* If set, interoperability mode, no proprietary extensions.  */
3008         __u8    interop;
3009         __u8    pad2;
3010         __u8    station_id;
3011         __le16  amsdu_enabled;
3012 } __attribute__((packed));
3013
3014 struct mwl8k_cmd_update_stadb {
3015         struct mwl8k_cmd_pkt header;
3016
3017         /* See STADB_ACTION_TYPE */
3018         __le32  action;
3019
3020         /* Peer MAC address */
3021         __u8    peer_addr[ETH_ALEN];
3022
3023         __le32  reserved;
3024
3025         /* Peer info - valid during add/update.  */
3026         struct peer_capability_info     peer_info;
3027 } __attribute__((packed));
3028
3029 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3030 #define MWL8K_STA_DB_DEL_ENTRY          2
3031
3032 /* Peer Entry flags - used to define the type of the peer node */
3033 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3034
3035 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3036                                       struct ieee80211_vif *vif,
3037                                       struct ieee80211_sta *sta)
3038 {
3039         struct mwl8k_cmd_update_stadb *cmd;
3040         struct peer_capability_info *p;
3041         u32 rates;
3042         int rc;
3043
3044         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3045         if (cmd == NULL)
3046                 return -ENOMEM;
3047
3048         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3049         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3050         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3051         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3052
3053         p = &cmd->peer_info;
3054         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3055         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3056         p->ht_support = sta->ht_cap.ht_supported;
3057         p->ht_caps = sta->ht_cap.cap;
3058         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3059                 ((sta->ht_cap.ampdu_density & 7) << 2);
3060         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3061                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3062         else
3063                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3064         legacy_rate_mask_to_array(p->legacy_rates, rates);
3065         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3066         p->interop = 1;
3067         p->amsdu_enabled = 0;
3068
3069         rc = mwl8k_post_cmd(hw, &cmd->header);
3070         kfree(cmd);
3071
3072         return rc ? rc : p->station_id;
3073 }
3074
3075 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3076                                       struct ieee80211_vif *vif, u8 *addr)
3077 {
3078         struct mwl8k_cmd_update_stadb *cmd;
3079         int rc;
3080
3081         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3082         if (cmd == NULL)
3083                 return -ENOMEM;
3084
3085         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3086         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3087         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3088         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3089
3090         rc = mwl8k_post_cmd(hw, &cmd->header);
3091         kfree(cmd);
3092
3093         return rc;
3094 }
3095
3096
3097 /*
3098  * Interrupt handling.
3099  */
3100 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3101 {
3102         struct ieee80211_hw *hw = dev_id;
3103         struct mwl8k_priv *priv = hw->priv;
3104         u32 status;
3105
3106         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3107         if (!status)
3108                 return IRQ_NONE;
3109
3110         if (status & MWL8K_A2H_INT_TX_DONE) {
3111                 status &= ~MWL8K_A2H_INT_TX_DONE;
3112                 tasklet_schedule(&priv->poll_tx_task);
3113         }
3114
3115         if (status & MWL8K_A2H_INT_RX_READY) {
3116                 status &= ~MWL8K_A2H_INT_RX_READY;
3117                 tasklet_schedule(&priv->poll_rx_task);
3118         }
3119
3120         if (status)
3121                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3122
3123         if (status & MWL8K_A2H_INT_OPC_DONE) {
3124                 if (priv->hostcmd_wait != NULL)
3125                         complete(priv->hostcmd_wait);
3126         }
3127
3128         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3129                 if (!mutex_is_locked(&priv->fw_mutex) &&
3130                     priv->radio_on && priv->pending_tx_pkts)
3131                         mwl8k_tx_start(priv);
3132         }
3133
3134         return IRQ_HANDLED;
3135 }
3136
3137 static void mwl8k_tx_poll(unsigned long data)
3138 {
3139         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3140         struct mwl8k_priv *priv = hw->priv;
3141         int limit;
3142         int i;
3143
3144         limit = 32;
3145
3146         spin_lock_bh(&priv->tx_lock);
3147
3148         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3149                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3150
3151         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3152                 complete(priv->tx_wait);
3153                 priv->tx_wait = NULL;
3154         }
3155
3156         spin_unlock_bh(&priv->tx_lock);
3157
3158         if (limit) {
3159                 writel(~MWL8K_A2H_INT_TX_DONE,
3160                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3161         } else {
3162                 tasklet_schedule(&priv->poll_tx_task);
3163         }
3164 }
3165
3166 static void mwl8k_rx_poll(unsigned long data)
3167 {
3168         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3169         struct mwl8k_priv *priv = hw->priv;
3170         int limit;
3171
3172         limit = 32;
3173         limit -= rxq_process(hw, 0, limit);
3174         limit -= rxq_refill(hw, 0, limit);
3175
3176         if (limit) {
3177                 writel(~MWL8K_A2H_INT_RX_READY,
3178                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3179         } else {
3180                 tasklet_schedule(&priv->poll_rx_task);
3181         }
3182 }
3183
3184
3185 /*
3186  * Core driver operations.
3187  */
3188 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3189 {
3190         struct mwl8k_priv *priv = hw->priv;
3191         int index = skb_get_queue_mapping(skb);
3192         int rc;
3193
3194         if (!priv->radio_on) {
3195                 printk(KERN_DEBUG "%s: dropped TX frame since radio "
3196                        "disabled\n", wiphy_name(hw->wiphy));
3197                 dev_kfree_skb(skb);
3198                 return NETDEV_TX_OK;
3199         }
3200
3201         rc = mwl8k_txq_xmit(hw, index, skb);
3202
3203         return rc;
3204 }
3205
3206 static int mwl8k_start(struct ieee80211_hw *hw)
3207 {
3208         struct mwl8k_priv *priv = hw->priv;
3209         int rc;
3210
3211         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3212                          IRQF_SHARED, MWL8K_NAME, hw);
3213         if (rc) {
3214                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
3215                        wiphy_name(hw->wiphy));
3216                 return -EIO;
3217         }
3218
3219         /* Enable TX reclaim and RX tasklets.  */
3220         tasklet_enable(&priv->poll_tx_task);
3221         tasklet_enable(&priv->poll_rx_task);
3222
3223         /* Enable interrupts */
3224         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3225
3226         rc = mwl8k_fw_lock(hw);
3227         if (!rc) {
3228                 rc = mwl8k_cmd_radio_enable(hw);
3229
3230                 if (!priv->ap_fw) {
3231                         if (!rc)
3232                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3233
3234                         if (!rc)
3235                                 rc = mwl8k_cmd_set_pre_scan(hw);
3236
3237                         if (!rc)
3238                                 rc = mwl8k_cmd_set_post_scan(hw,
3239                                                 "\x00\x00\x00\x00\x00\x00");
3240                 }
3241
3242                 if (!rc)
3243                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3244
3245                 if (!rc)
3246                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3247
3248                 mwl8k_fw_unlock(hw);
3249         }
3250
3251         if (rc) {
3252                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3253                 free_irq(priv->pdev->irq, hw);
3254                 tasklet_disable(&priv->poll_tx_task);
3255                 tasklet_disable(&priv->poll_rx_task);
3256         }
3257
3258         return rc;
3259 }
3260
3261 static void mwl8k_stop(struct ieee80211_hw *hw)
3262 {
3263         struct mwl8k_priv *priv = hw->priv;
3264         int i;
3265
3266         mwl8k_cmd_radio_disable(hw);
3267
3268         ieee80211_stop_queues(hw);
3269
3270         /* Disable interrupts */
3271         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3272         free_irq(priv->pdev->irq, hw);
3273
3274         /* Stop finalize join worker */
3275         cancel_work_sync(&priv->finalize_join_worker);
3276         if (priv->beacon_skb != NULL)
3277                 dev_kfree_skb(priv->beacon_skb);
3278
3279         /* Stop TX reclaim and RX tasklets.  */
3280         tasklet_disable(&priv->poll_tx_task);
3281         tasklet_disable(&priv->poll_rx_task);
3282
3283         /* Return all skbs to mac80211 */
3284         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3285                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3286 }
3287
3288 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3289                                struct ieee80211_vif *vif)
3290 {
3291         struct mwl8k_priv *priv = hw->priv;
3292         struct mwl8k_vif *mwl8k_vif;
3293         u32 macids_supported;
3294         int macid;
3295
3296         /*
3297          * Reject interface creation if sniffer mode is active, as
3298          * STA operation is mutually exclusive with hardware sniffer
3299          * mode.  (Sniffer mode is only used on STA firmware.)
3300          */
3301         if (priv->sniffer_enabled) {
3302                 printk(KERN_INFO "%s: unable to create STA "
3303                        "interface due to sniffer mode being enabled\n",
3304                        wiphy_name(hw->wiphy));
3305                 return -EINVAL;
3306         }
3307
3308
3309         switch (vif->type) {
3310         case NL80211_IFTYPE_AP:
3311                 macids_supported = priv->ap_macids_supported;
3312                 break;
3313         case NL80211_IFTYPE_STATION:
3314                 macids_supported = priv->sta_macids_supported;
3315                 break;
3316         default:
3317                 return -EINVAL;
3318         }
3319
3320         macid = ffs(macids_supported & ~priv->macids_used);
3321         if (!macid--)
3322                 return -EBUSY;
3323
3324         /* Setup driver private area. */
3325         mwl8k_vif = MWL8K_VIF(vif);
3326         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3327         mwl8k_vif->vif = vif;
3328         mwl8k_vif->macid = macid;
3329         mwl8k_vif->seqno = 0;
3330
3331         /* Set the mac address.  */
3332         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3333
3334         if (priv->ap_fw)
3335                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3336
3337         priv->macids_used |= 1 << mwl8k_vif->macid;
3338         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3339
3340         return 0;
3341 }
3342
3343 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3344                                    struct ieee80211_vif *vif)
3345 {
3346         struct mwl8k_priv *priv = hw->priv;
3347         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3348
3349         if (priv->ap_fw)
3350                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3351
3352         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3353
3354         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3355         list_del(&mwl8k_vif->list);
3356 }
3357
3358 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3359 {
3360         struct ieee80211_conf *conf = &hw->conf;
3361         struct mwl8k_priv *priv = hw->priv;
3362         int rc;
3363
3364         if (conf->flags & IEEE80211_CONF_IDLE) {
3365                 mwl8k_cmd_radio_disable(hw);
3366                 return 0;
3367         }
3368
3369         rc = mwl8k_fw_lock(hw);
3370         if (rc)
3371                 return rc;
3372
3373         rc = mwl8k_cmd_radio_enable(hw);
3374         if (rc)
3375                 goto out;
3376
3377         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3378         if (rc)
3379                 goto out;
3380
3381         if (conf->power_level > 18)
3382                 conf->power_level = 18;
3383         rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3384         if (rc)
3385                 goto out;
3386
3387         if (priv->ap_fw) {
3388                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3389                 if (!rc)
3390                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3391         } else {
3392                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3393         }
3394
3395 out:
3396         mwl8k_fw_unlock(hw);
3397
3398         return rc;
3399 }
3400
3401 static void
3402 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3403                            struct ieee80211_bss_conf *info, u32 changed)
3404 {
3405         struct mwl8k_priv *priv = hw->priv;
3406         u32 ap_legacy_rates;
3407         u8 ap_mcs_rates[16];
3408         int rc;
3409
3410         if (mwl8k_fw_lock(hw))
3411                 return;
3412
3413         /*
3414          * No need to capture a beacon if we're no longer associated.
3415          */
3416         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3417                 priv->capture_beacon = false;
3418
3419         /*
3420          * Get the AP's legacy and MCS rates.
3421          */
3422         if (vif->bss_conf.assoc) {
3423                 struct ieee80211_sta *ap;
3424
3425                 rcu_read_lock();
3426
3427                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3428                 if (ap == NULL) {
3429                         rcu_read_unlock();
3430                         goto out;
3431                 }
3432
3433                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3434                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3435                 } else {
3436                         ap_legacy_rates =
3437                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3438                 }
3439                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3440
3441                 rcu_read_unlock();
3442         }
3443
3444         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3445                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3446                 if (rc)
3447                         goto out;
3448
3449                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
3450                 if (rc)
3451                         goto out;
3452         }
3453
3454         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3455                 rc = mwl8k_set_radio_preamble(hw,
3456                                 vif->bss_conf.use_short_preamble);
3457                 if (rc)
3458                         goto out;
3459         }
3460
3461         if (changed & BSS_CHANGED_ERP_SLOT) {
3462                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3463                 if (rc)
3464                         goto out;
3465         }
3466
3467         if (vif->bss_conf.assoc &&
3468             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
3469                         BSS_CHANGED_HT))) {
3470                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3471                 if (rc)
3472                         goto out;
3473         }
3474
3475         if (vif->bss_conf.assoc &&
3476             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3477                 /*
3478                  * Finalize the join.  Tell rx handler to process
3479                  * next beacon from our BSSID.
3480                  */
3481                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3482                 priv->capture_beacon = true;
3483         }
3484
3485 out:
3486         mwl8k_fw_unlock(hw);
3487 }
3488
3489 static void
3490 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3491                           struct ieee80211_bss_conf *info, u32 changed)
3492 {
3493         int rc;
3494
3495         if (mwl8k_fw_lock(hw))
3496                 return;
3497
3498         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3499                 rc = mwl8k_set_radio_preamble(hw,
3500                                 vif->bss_conf.use_short_preamble);
3501                 if (rc)
3502                         goto out;
3503         }
3504
3505         if (changed & BSS_CHANGED_BASIC_RATES) {
3506                 int idx;
3507                 int rate;
3508
3509                 /*
3510                  * Use lowest supported basic rate for multicasts
3511                  * and management frames (such as probe responses --
3512                  * beacons will always go out at 1 Mb/s).
3513                  */
3514                 idx = ffs(vif->bss_conf.basic_rates);
3515                 if (idx)
3516                         idx--;
3517
3518                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3519                         rate = mwl8k_rates_24[idx].hw_value;
3520                 else
3521                         rate = mwl8k_rates_50[idx].hw_value;
3522
3523                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
3524         }
3525
3526         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
3527                 struct sk_buff *skb;
3528
3529                 skb = ieee80211_beacon_get(hw, vif);
3530                 if (skb != NULL) {
3531                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
3532                         kfree_skb(skb);
3533                 }
3534         }
3535
3536         if (changed & BSS_CHANGED_BEACON_ENABLED)
3537                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
3538
3539 out:
3540         mwl8k_fw_unlock(hw);
3541 }
3542
3543 static void
3544 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3545                        struct ieee80211_bss_conf *info, u32 changed)
3546 {
3547         struct mwl8k_priv *priv = hw->priv;
3548
3549         if (!priv->ap_fw)
3550                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
3551         else
3552                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
3553 }
3554
3555 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3556                                    int mc_count, struct dev_addr_list *mclist)
3557 {
3558         struct mwl8k_cmd_pkt *cmd;
3559
3560         /*
3561          * Synthesize and return a command packet that programs the
3562          * hardware multicast address filter.  At this point we don't
3563          * know whether FIF_ALLMULTI is being requested, but if it is,
3564          * we'll end up throwing this packet away and creating a new
3565          * one in mwl8k_configure_filter().
3566          */
3567         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_count, mclist);
3568
3569         return (unsigned long)cmd;
3570 }
3571
3572 static int
3573 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3574                                unsigned int changed_flags,
3575                                unsigned int *total_flags)
3576 {
3577         struct mwl8k_priv *priv = hw->priv;
3578
3579         /*
3580          * Hardware sniffer mode is mutually exclusive with STA
3581          * operation, so refuse to enable sniffer mode if a STA
3582          * interface is active.
3583          */
3584         if (!list_empty(&priv->vif_list)) {
3585                 if (net_ratelimit())
3586                         printk(KERN_INFO "%s: not enabling sniffer "
3587                                "mode because STA interface is active\n",
3588                                wiphy_name(hw->wiphy));
3589                 return 0;
3590         }
3591
3592         if (!priv->sniffer_enabled) {
3593                 if (mwl8k_cmd_enable_sniffer(hw, 1))
3594                         return 0;
3595                 priv->sniffer_enabled = true;
3596         }
3597
3598         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3599                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3600                         FIF_OTHER_BSS;
3601
3602         return 1;
3603 }
3604
3605 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
3606 {
3607         if (!list_empty(&priv->vif_list))
3608                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
3609
3610         return NULL;
3611 }
3612
3613 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3614                                    unsigned int changed_flags,
3615                                    unsigned int *total_flags,
3616                                    u64 multicast)
3617 {
3618         struct mwl8k_priv *priv = hw->priv;
3619         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3620
3621         /*
3622          * AP firmware doesn't allow fine-grained control over
3623          * the receive filter.
3624          */
3625         if (priv->ap_fw) {
3626                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3627                 kfree(cmd);
3628                 return;
3629         }
3630
3631         /*
3632          * Enable hardware sniffer mode if FIF_CONTROL or
3633          * FIF_OTHER_BSS is requested.
3634          */
3635         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3636             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3637                 kfree(cmd);
3638                 return;
3639         }
3640
3641         /* Clear unsupported feature flags */
3642         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3643
3644         if (mwl8k_fw_lock(hw)) {
3645                 kfree(cmd);
3646                 return;
3647         }
3648
3649         if (priv->sniffer_enabled) {
3650                 mwl8k_cmd_enable_sniffer(hw, 0);
3651                 priv->sniffer_enabled = false;
3652         }
3653
3654         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3655                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3656                         /*
3657                          * Disable the BSS filter.
3658                          */
3659                         mwl8k_cmd_set_pre_scan(hw);
3660                 } else {
3661                         struct mwl8k_vif *mwl8k_vif;
3662                         const u8 *bssid;
3663
3664                         /*
3665                          * Enable the BSS filter.
3666                          *
3667                          * If there is an active STA interface, use that
3668                          * interface's BSSID, otherwise use a dummy one
3669                          * (where the OUI part needs to be nonzero for
3670                          * the BSSID to be accepted by POST_SCAN).
3671                          */
3672                         mwl8k_vif = mwl8k_first_vif(priv);
3673                         if (mwl8k_vif != NULL)
3674                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
3675                         else
3676                                 bssid = "\x01\x00\x00\x00\x00\x00";
3677
3678                         mwl8k_cmd_set_post_scan(hw, bssid);
3679                 }
3680         }
3681
3682         /*
3683          * If FIF_ALLMULTI is being requested, throw away the command
3684          * packet that ->prepare_multicast() built and replace it with
3685          * a command packet that enables reception of all multicast
3686          * packets.
3687          */
3688         if (*total_flags & FIF_ALLMULTI) {
3689                 kfree(cmd);
3690                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, 0, NULL);
3691         }
3692
3693         if (cmd != NULL) {
3694                 mwl8k_post_cmd(hw, cmd);
3695                 kfree(cmd);
3696         }
3697
3698         mwl8k_fw_unlock(hw);
3699 }
3700
3701 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3702 {
3703         return mwl8k_cmd_set_rts_threshold(hw, value);
3704 }
3705
3706 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
3707                             struct ieee80211_vif *vif,
3708                             struct ieee80211_sta *sta)
3709 {
3710         struct mwl8k_priv *priv = hw->priv;
3711
3712         if (priv->ap_fw)
3713                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
3714         else
3715                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
3716 }
3717
3718 static int mwl8k_sta_add(struct ieee80211_hw *hw,
3719                          struct ieee80211_vif *vif,
3720                          struct ieee80211_sta *sta)
3721 {
3722         struct mwl8k_priv *priv = hw->priv;
3723         int ret;
3724
3725         if (!priv->ap_fw) {
3726                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
3727                 if (ret >= 0) {
3728                         MWL8K_STA(sta)->peer_id = ret;
3729                         return 0;
3730                 }
3731
3732                 return ret;
3733         }
3734
3735         return mwl8k_cmd_set_new_stn_add(hw, vif, sta);
3736 }
3737
3738 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3739                          const struct ieee80211_tx_queue_params *params)
3740 {
3741         struct mwl8k_priv *priv = hw->priv;
3742         int rc;
3743
3744         rc = mwl8k_fw_lock(hw);
3745         if (!rc) {
3746                 if (!priv->wmm_enabled)
3747                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3748
3749                 if (!rc)
3750                         rc = mwl8k_cmd_set_edca_params(hw, queue,
3751                                                        params->cw_min,
3752                                                        params->cw_max,
3753                                                        params->aifs,
3754                                                        params->txop);
3755
3756                 mwl8k_fw_unlock(hw);
3757         }
3758
3759         return rc;
3760 }
3761
3762 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3763                            struct ieee80211_low_level_stats *stats)
3764 {
3765         return mwl8k_cmd_get_stat(hw, stats);
3766 }
3767
3768 static int
3769 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3770                    enum ieee80211_ampdu_mlme_action action,
3771                    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3772 {
3773         switch (action) {
3774         case IEEE80211_AMPDU_RX_START:
3775         case IEEE80211_AMPDU_RX_STOP:
3776                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
3777                         return -ENOTSUPP;
3778                 return 0;
3779         default:
3780                 return -ENOTSUPP;
3781         }
3782 }
3783
3784 static const struct ieee80211_ops mwl8k_ops = {
3785         .tx                     = mwl8k_tx,
3786         .start                  = mwl8k_start,
3787         .stop                   = mwl8k_stop,
3788         .add_interface          = mwl8k_add_interface,
3789         .remove_interface       = mwl8k_remove_interface,
3790         .config                 = mwl8k_config,
3791         .bss_info_changed       = mwl8k_bss_info_changed,
3792         .prepare_multicast      = mwl8k_prepare_multicast,
3793         .configure_filter       = mwl8k_configure_filter,
3794         .set_rts_threshold      = mwl8k_set_rts_threshold,
3795         .sta_add                = mwl8k_sta_add,
3796         .sta_remove             = mwl8k_sta_remove,
3797         .conf_tx                = mwl8k_conf_tx,
3798         .get_stats              = mwl8k_get_stats,
3799         .ampdu_action           = mwl8k_ampdu_action,
3800 };
3801
3802 static void mwl8k_finalize_join_worker(struct work_struct *work)
3803 {
3804         struct mwl8k_priv *priv =
3805                 container_of(work, struct mwl8k_priv, finalize_join_worker);
3806         struct sk_buff *skb = priv->beacon_skb;
3807         struct ieee80211_mgmt *mgmt = (void *)skb->data;
3808         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
3809         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
3810                                          mgmt->u.beacon.variable, len);
3811         int dtim_period = 1;
3812
3813         if (tim && tim[1] >= 2)
3814                 dtim_period = tim[3];
3815
3816         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
3817
3818         dev_kfree_skb(skb);
3819         priv->beacon_skb = NULL;
3820 }
3821
3822 enum {
3823         MWL8363 = 0,
3824         MWL8687,
3825         MWL8366,
3826 };
3827
3828 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3829         [MWL8363] = {
3830                 .part_name      = "88w8363",
3831                 .helper_image   = "mwl8k/helper_8363.fw",
3832                 .fw_image       = "mwl8k/fmimage_8363.fw",
3833         },
3834         [MWL8687] = {
3835                 .part_name      = "88w8687",
3836                 .helper_image   = "mwl8k/helper_8687.fw",
3837                 .fw_image       = "mwl8k/fmimage_8687.fw",
3838         },
3839         [MWL8366] = {
3840                 .part_name      = "88w8366",
3841                 .helper_image   = "mwl8k/helper_8366.fw",
3842                 .fw_image       = "mwl8k/fmimage_8366.fw",
3843                 .ap_rxd_ops     = &rxd_8366_ap_ops,
3844         },
3845 };
3846
3847 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
3848 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
3849 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
3850 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
3851 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
3852 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
3853
3854 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3855         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
3856         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
3857         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
3858         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
3859         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
3860         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
3861         { },
3862 };
3863 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
3864
3865 static int __devinit mwl8k_probe(struct pci_dev *pdev,
3866                                  const struct pci_device_id *id)
3867 {
3868         static int printed_version = 0;
3869         struct ieee80211_hw *hw;
3870         struct mwl8k_priv *priv;
3871         int rc;
3872         int i;
3873
3874         if (!printed_version) {
3875                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
3876                 printed_version = 1;
3877         }
3878
3879
3880         rc = pci_enable_device(pdev);
3881         if (rc) {
3882                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
3883                        MWL8K_NAME);
3884                 return rc;
3885         }
3886
3887         rc = pci_request_regions(pdev, MWL8K_NAME);
3888         if (rc) {
3889                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
3890                        MWL8K_NAME);
3891                 goto err_disable_device;
3892         }
3893
3894         pci_set_master(pdev);
3895
3896
3897         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
3898         if (hw == NULL) {
3899                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
3900                 rc = -ENOMEM;
3901                 goto err_free_reg;
3902         }
3903
3904         SET_IEEE80211_DEV(hw, &pdev->dev);
3905         pci_set_drvdata(pdev, hw);
3906
3907         priv = hw->priv;
3908         priv->hw = hw;
3909         priv->pdev = pdev;
3910         priv->device_info = &mwl8k_info_tbl[id->driver_data];
3911
3912
3913         priv->sram = pci_iomap(pdev, 0, 0x10000);
3914         if (priv->sram == NULL) {
3915                 printk(KERN_ERR "%s: Cannot map device SRAM\n",
3916                        wiphy_name(hw->wiphy));
3917                 goto err_iounmap;
3918         }
3919
3920         /*
3921          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
3922          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
3923          */
3924         priv->regs = pci_iomap(pdev, 1, 0x10000);
3925         if (priv->regs == NULL) {
3926                 priv->regs = pci_iomap(pdev, 2, 0x10000);
3927                 if (priv->regs == NULL) {
3928                         printk(KERN_ERR "%s: Cannot map device registers\n",
3929                                wiphy_name(hw->wiphy));
3930                         goto err_iounmap;
3931                 }
3932         }
3933
3934
3935         /* Reset firmware and hardware */
3936         mwl8k_hw_reset(priv);
3937
3938         /* Ask userland hotplug daemon for the device firmware */
3939         rc = mwl8k_request_firmware(priv);
3940         if (rc) {
3941                 printk(KERN_ERR "%s: Firmware files not found\n",
3942                        wiphy_name(hw->wiphy));
3943                 goto err_stop_firmware;
3944         }
3945
3946         /* Load firmware into hardware */
3947         rc = mwl8k_load_firmware(hw);
3948         if (rc) {
3949                 printk(KERN_ERR "%s: Cannot start firmware\n",
3950                        wiphy_name(hw->wiphy));
3951                 goto err_stop_firmware;
3952         }
3953
3954         /* Reclaim memory once firmware is successfully loaded */
3955         mwl8k_release_firmware(priv);
3956
3957
3958         if (priv->ap_fw) {
3959                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
3960                 if (priv->rxd_ops == NULL) {
3961                         printk(KERN_ERR "%s: Driver does not have AP "
3962                                "firmware image support for this hardware\n",
3963                                wiphy_name(hw->wiphy));
3964                         goto err_stop_firmware;
3965                 }
3966         } else {
3967                 priv->rxd_ops = &rxd_sta_ops;
3968         }
3969
3970         priv->sniffer_enabled = false;
3971         priv->wmm_enabled = false;
3972         priv->pending_tx_pkts = 0;
3973
3974
3975         /*
3976          * Extra headroom is the size of the required DMA header
3977          * minus the size of the smallest 802.11 frame (CTS frame).
3978          */
3979         hw->extra_tx_headroom =
3980                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
3981
3982         hw->channel_change_time = 10;
3983
3984         hw->queues = MWL8K_TX_QUEUES;
3985
3986         /* Set rssi and noise values to dBm */
3987         hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3988         hw->vif_data_size = sizeof(struct mwl8k_vif);
3989         hw->sta_data_size = sizeof(struct mwl8k_sta);
3990
3991         priv->macids_used = 0;
3992         INIT_LIST_HEAD(&priv->vif_list);
3993
3994         /* Set default radio state and preamble */
3995         priv->radio_on = 0;
3996         priv->radio_short_preamble = 0;
3997
3998         /* Finalize join worker */
3999         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4000
4001         /* TX reclaim and RX tasklets.  */
4002         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4003         tasklet_disable(&priv->poll_tx_task);
4004         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4005         tasklet_disable(&priv->poll_rx_task);
4006
4007         /* Power management cookie */
4008         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4009         if (priv->cookie == NULL)
4010                 goto err_stop_firmware;
4011
4012         rc = mwl8k_rxq_init(hw, 0);
4013         if (rc)
4014                 goto err_free_cookie;
4015         rxq_refill(hw, 0, INT_MAX);
4016
4017         mutex_init(&priv->fw_mutex);
4018         priv->fw_mutex_owner = NULL;
4019         priv->fw_mutex_depth = 0;
4020         priv->hostcmd_wait = NULL;
4021
4022         spin_lock_init(&priv->tx_lock);
4023
4024         priv->tx_wait = NULL;
4025
4026         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4027                 rc = mwl8k_txq_init(hw, i);
4028                 if (rc)
4029                         goto err_free_queues;
4030         }
4031
4032         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4033         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4034         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4035                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4036         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4037
4038         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4039                          IRQF_SHARED, MWL8K_NAME, hw);
4040         if (rc) {
4041                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
4042                        wiphy_name(hw->wiphy));
4043                 goto err_free_queues;
4044         }
4045
4046         /*
4047          * Temporarily enable interrupts.  Initial firmware host
4048          * commands use interrupts and avoid polling.  Disable
4049          * interrupts when done.
4050          */
4051         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4052
4053         /* Get config data, mac addrs etc */
4054         if (priv->ap_fw) {
4055                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4056                 if (!rc)
4057                         rc = mwl8k_cmd_set_hw_spec(hw);
4058         } else {
4059                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4060         }
4061         if (rc) {
4062                 printk(KERN_ERR "%s: Cannot initialise firmware\n",
4063                        wiphy_name(hw->wiphy));
4064                 goto err_free_irq;
4065         }
4066
4067         hw->wiphy->interface_modes = 0;
4068         if (priv->ap_macids_supported)
4069                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4070         if (priv->sta_macids_supported)
4071                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4072
4073
4074         /* Turn radio off */
4075         rc = mwl8k_cmd_radio_disable(hw);
4076         if (rc) {
4077                 printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
4078                 goto err_free_irq;
4079         }
4080
4081         /* Clear MAC address */
4082         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4083         if (rc) {
4084                 printk(KERN_ERR "%s: Cannot clear MAC address\n",
4085                        wiphy_name(hw->wiphy));
4086                 goto err_free_irq;
4087         }
4088
4089         /* Disable interrupts */
4090         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4091         free_irq(priv->pdev->irq, hw);
4092
4093         rc = ieee80211_register_hw(hw);
4094         if (rc) {
4095                 printk(KERN_ERR "%s: Cannot register device\n",
4096                        wiphy_name(hw->wiphy));
4097                 goto err_free_queues;
4098         }
4099
4100         printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
4101                wiphy_name(hw->wiphy), priv->device_info->part_name,
4102                priv->hw_rev, hw->wiphy->perm_addr,
4103                priv->ap_fw ? "AP" : "STA",
4104                (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4105                (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4106
4107         return 0;
4108
4109 err_free_irq:
4110         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4111         free_irq(priv->pdev->irq, hw);
4112
4113 err_free_queues:
4114         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4115                 mwl8k_txq_deinit(hw, i);
4116         mwl8k_rxq_deinit(hw, 0);
4117
4118 err_free_cookie:
4119         if (priv->cookie != NULL)
4120                 pci_free_consistent(priv->pdev, 4,
4121                                 priv->cookie, priv->cookie_dma);
4122
4123 err_stop_firmware:
4124         mwl8k_hw_reset(priv);
4125         mwl8k_release_firmware(priv);
4126
4127 err_iounmap:
4128         if (priv->regs != NULL)
4129                 pci_iounmap(pdev, priv->regs);
4130
4131         if (priv->sram != NULL)
4132                 pci_iounmap(pdev, priv->sram);
4133
4134         pci_set_drvdata(pdev, NULL);
4135         ieee80211_free_hw(hw);
4136
4137 err_free_reg:
4138         pci_release_regions(pdev);
4139
4140 err_disable_device:
4141         pci_disable_device(pdev);
4142
4143         return rc;
4144 }
4145
4146 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4147 {
4148         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4149 }
4150
4151 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4152 {
4153         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4154         struct mwl8k_priv *priv;
4155         int i;
4156
4157         if (hw == NULL)
4158                 return;
4159         priv = hw->priv;
4160
4161         ieee80211_stop_queues(hw);
4162
4163         ieee80211_unregister_hw(hw);
4164
4165         /* Remove TX reclaim and RX tasklets.  */
4166         tasklet_kill(&priv->poll_tx_task);
4167         tasklet_kill(&priv->poll_rx_task);
4168
4169         /* Stop hardware */
4170         mwl8k_hw_reset(priv);
4171
4172         /* Return all skbs to mac80211 */
4173         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4174                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4175
4176         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4177                 mwl8k_txq_deinit(hw, i);
4178
4179         mwl8k_rxq_deinit(hw, 0);
4180
4181         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4182
4183         pci_iounmap(pdev, priv->regs);
4184         pci_iounmap(pdev, priv->sram);
4185         pci_set_drvdata(pdev, NULL);
4186         ieee80211_free_hw(hw);
4187         pci_release_regions(pdev);
4188         pci_disable_device(pdev);
4189 }
4190
4191 static struct pci_driver mwl8k_driver = {
4192         .name           = MWL8K_NAME,
4193         .id_table       = mwl8k_pci_id_table,
4194         .probe          = mwl8k_probe,
4195         .remove         = __devexit_p(mwl8k_remove),
4196         .shutdown       = __devexit_p(mwl8k_shutdown),
4197 };
4198
4199 static int __init mwl8k_init(void)
4200 {
4201         return pci_register_driver(&mwl8k_driver);
4202 }
4203
4204 static void __exit mwl8k_exit(void)
4205 {
4206         pci_unregister_driver(&mwl8k_driver);
4207 }
4208
4209 module_init(mwl8k_init);
4210 module_exit(mwl8k_exit);
4211
4212 MODULE_DESCRIPTION(MWL8K_DESC);
4213 MODULE_VERSION(MWL8K_VERSION);
4214 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
4215 MODULE_LICENSE("GPL");