SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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
 754         if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
 755                 status->flag |= RX_FLAG_HT;
 756                 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
 757                         status->flag |= RX_FLAG_40MHZ;
 758                 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
 759         } else {
 760                 int i;
 761
 762                 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
 763                         if (mwl8k_rates_24[i].hw_value == rxd->rate) {
 764                                 status->rate_idx = i;
 765                                 break;
 766                         }
 767                 }
 768         }
 769
 770         if (rxd->channel > 14) {
 771                 status->band = IEEE80211_BAND_5GHZ;
 772                 if (!(status->flag & RX_FLAG_HT))
 773                         status->rate_idx -= 5;
 774         } else {
 775                 status->band = IEEE80211_BAND_2GHZ;
 776         }
 777         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 778
 779         *qos = rxd->qos_control;
 780
 781         return le16_to_cpu(rxd->pkt_len);
 782 }
 783
 784 static struct rxd_ops rxd_8366_ap_ops = {
 785         .rxd_size       = sizeof(struct mwl8k_rxd_8366_ap),
 786         .rxd_init       = mwl8k_rxd_8366_ap_init,
 787         .rxd_refill     = mwl8k_rxd_8366_ap_refill,
 788         .rxd_process    = mwl8k_rxd_8366_ap_process,
 789 };
 790
 791 /*
 792  * Packet reception for STA firmware.
 793  */
 794 struct mwl8k_rxd_sta {
 795         __le16 pkt_len;
 796         __u8 link_quality;
 797         __u8 noise_level;
 798         __le32 pkt_phys_addr;
 799         __le32 next_rxd_phys_addr;
 800         __le16 qos_control;
 801         __le16 rate_info;
 802         __le32 pad0[4];
 803         __u8 rssi;
 804         __u8 channel;
 805         __le16 pad1;
 806         __u8 rx_ctrl;
 807         __u8 rx_status;
 808         __u8 pad2[2];
 809 } __attribute__((packed));
 810
 811 #define MWL8K_STA_RATE_INFO_SHORTPRE            0x8000
 812 #define MWL8K_STA_RATE_INFO_ANTSELECT(x)        (((x) >> 11) & 0x3)
 813 #define MWL8K_STA_RATE_INFO_RATEID(x)           (((x) >> 3) & 0x3f)
 814 #define MWL8K_STA_RATE_INFO_40MHZ               0x0004
 815 #define MWL8K_STA_RATE_INFO_SHORTGI             0x0002
 816 #define MWL8K_STA_RATE_INFO_MCS_FORMAT          0x0001
 817
 818 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST         0x02
 819
 820 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
 821 {
 822         struct mwl8k_rxd_sta *rxd = _rxd;
 823
 824         rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
 825         rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
 826 }
 827
 828 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
 829 {
 830         struct mwl8k_rxd_sta *rxd = _rxd;
 831
 832         rxd->pkt_len = cpu_to_le16(len);
 833         rxd->pkt_phys_addr = cpu_to_le32(addr);
 834         wmb();
 835         rxd->rx_ctrl = 0;
 836 }
 837
 838 static int
 839 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
 840                        __le16 *qos)
 841 {
 842         struct mwl8k_rxd_sta *rxd = _rxd;
 843         u16 rate_info;
 844
 845         if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
 846                 return -1;
 847         rmb();
 848
 849         rate_info = le16_to_cpu(rxd->rate_info);
 850
 851         memset(status, 0, sizeof(*status));
 852
 853         status->signal = -rxd->rssi;
 854         status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
 855         status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
 856
 857         if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
 858                 status->flag |= RX_FLAG_SHORTPRE;
 859         if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
 860                 status->flag |= RX_FLAG_40MHZ;
 861         if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
 862                 status->flag |= RX_FLAG_SHORT_GI;
 863         if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
 864                 status->flag |= RX_FLAG_HT;
 865
 866         if (rxd->channel > 14) {
 867                 status->band = IEEE80211_BAND_5GHZ;
 868                 if (!(status->flag & RX_FLAG_HT))
 869                         status->rate_idx -= 5;
 870         } else {
 871                 status->band = IEEE80211_BAND_2GHZ;
 872         }
 873         status->freq = ieee80211_channel_to_frequency(rxd->channel);
 874
 875         *qos = rxd->qos_control;
 876
 877         return le16_to_cpu(rxd->pkt_len);
 878 }
 879
 880 static struct rxd_ops rxd_sta_ops = {
 881         .rxd_size       = sizeof(struct mwl8k_rxd_sta),
 882         .rxd_init       = mwl8k_rxd_sta_init,
 883         .rxd_refill     = mwl8k_rxd_sta_refill,
 884         .rxd_process    = mwl8k_rxd_sta_process,
 885 };
 886
 887
 888 #define MWL8K_RX_DESCS          256
 889 #define MWL8K_RX_MAXSZ          3800
 890
 891 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
 892 {
 893         struct mwl8k_priv *priv = hw->priv;
 894         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 895         int size;
 896         int i;
 897
 898         rxq->rxd_count = 0;
 899         rxq->head = 0;
 900         rxq->tail = 0;
 901
 902         size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
 903
 904         rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
 905         if (rxq->rxd == NULL) {
 906                 printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
 907                        wiphy_name(hw->wiphy));
 908                 return -ENOMEM;
 909         }
 910         memset(rxq->rxd, 0, size);
 911
 912         rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
 913         if (rxq->buf == NULL) {
 914                 printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
 915                        wiphy_name(hw->wiphy));
 916                 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
 917                 return -ENOMEM;
 918         }
 919         memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
 920
 921         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 922                 int desc_size;
 923                 void *rxd;
 924                 int nexti;
 925                 dma_addr_t next_dma_addr;
 926
 927                 desc_size = priv->rxd_ops->rxd_size;
 928                 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
 929
 930                 nexti = i + 1;
 931                 if (nexti == MWL8K_RX_DESCS)
 932                         nexti = 0;
 933                 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
 934
 935                 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
 936         }
 937
 938         return 0;
 939 }
 940
 941 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
 942 {
 943         struct mwl8k_priv *priv = hw->priv;
 944         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 945         int refilled;
 946
 947         refilled = 0;
 948         while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
 949                 struct sk_buff *skb;
 950                 dma_addr_t addr;
 951                 int rx;
 952                 void *rxd;
 953
 954                 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
 955                 if (skb == NULL)
 956                         break;
 957
 958                 addr = pci_map_single(priv->pdev, skb->data,
 959                                       MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
 960
 961                 rxq->rxd_count++;
 962                 rx = rxq->tail++;
 963                 if (rxq->tail == MWL8K_RX_DESCS)
 964                         rxq->tail = 0;
 965                 rxq->buf[rx].skb = skb;
 966                 pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
 967
 968                 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
 969                 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
 970
 971                 refilled++;
 972         }
 973
 974         return refilled;
 975 }
 976
 977 /* Must be called only when the card's reception is completely halted */
 978 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
 979 {
 980         struct mwl8k_priv *priv = hw->priv;
 981         struct mwl8k_rx_queue *rxq = priv->rxq + index;
 982         int i;
 983
 984         for (i = 0; i < MWL8K_RX_DESCS; i++) {
 985                 if (rxq->buf[i].skb != NULL) {
 986                         pci_unmap_single(priv->pdev,
 987                                          pci_unmap_addr(&rxq->buf[i], dma),
 988                                          MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
 989                         pci_unmap_addr_set(&rxq->buf[i], dma, 0);
 990
 991                         kfree_skb(rxq->buf[i].skb);
 992                         rxq->buf[i].skb = NULL;
 993                 }
 994         }
 995
 996         kfree(rxq->buf);
 997         rxq->buf = NULL;
 998
 999         pci_free_consistent(priv->pdev,
1000                             MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1001                             rxq->rxd, rxq->rxd_dma);
1002         rxq->rxd = NULL;
1003 }
1004
1005
1006 /*
1007  * Scan a list of BSSIDs to process for finalize join.
1008  * Allows for extension to process multiple BSSIDs.
1009  */
1010 static inline int
1011 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1012 {
1013         return priv->capture_beacon &&
1014                 ieee80211_is_beacon(wh->frame_control) &&
1015                 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1016 }
1017
1018 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1019                                      struct sk_buff *skb)
1020 {
1021         struct mwl8k_priv *priv = hw->priv;
1022
1023         priv->capture_beacon = false;
1024         memset(priv->capture_bssid, 0, ETH_ALEN);
1025
1026         /*
1027          * Use GFP_ATOMIC as rxq_process is called from
1028          * the primary interrupt handler, memory allocation call
1029          * must not sleep.
1030          */
1031         priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1032         if (priv->beacon_skb != NULL)
1033                 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1034 }
1035
1036 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1037 {
1038         struct mwl8k_priv *priv = hw->priv;
1039         struct mwl8k_rx_queue *rxq = priv->rxq + index;
1040         int processed;
1041
1042         processed = 0;
1043         while (rxq->rxd_count && limit--) {
1044                 struct sk_buff *skb;
1045                 void *rxd;
1046                 int pkt_len;
1047                 struct ieee80211_rx_status status;
1048                 __le16 qos;
1049
1050                 skb = rxq->buf[rxq->head].skb;
1051                 if (skb == NULL)
1052                         break;
1053
1054                 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1055
1056                 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1057                 if (pkt_len < 0)
1058                         break;
1059
1060                 rxq->buf[rxq->head].skb = NULL;
1061
1062                 pci_unmap_single(priv->pdev,
1063                                  pci_unmap_addr(&rxq->buf[rxq->head], dma),
1064                                  MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1065                 pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1066
1067                 rxq->head++;
1068                 if (rxq->head == MWL8K_RX_DESCS)
1069                         rxq->head = 0;
1070
1071                 rxq->rxd_count--;
1072
1073                 skb_put(skb, pkt_len);
1074                 mwl8k_remove_dma_header(skb, qos);
1075
1076                 /*
1077                  * Check for a pending join operation.  Save a
1078                  * copy of the beacon and schedule a tasklet to
1079                  * send a FINALIZE_JOIN command to the firmware.
1080                  */
1081                 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1082                         mwl8k_save_beacon(hw, skb);
1083
1084                 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1085                 ieee80211_rx_irqsafe(hw, skb);
1086
1087                 processed++;
1088         }
1089
1090         return processed;
1091 }
1092
1093
1094 /*
1095  * Packet transmission.
1096  */
1097
1098 #define MWL8K_TXD_STATUS_OK                     0x00000001
1099 #define MWL8K_TXD_STATUS_OK_RETRY               0x00000002
1100 #define MWL8K_TXD_STATUS_OK_MORE_RETRY          0x00000004
1101 #define MWL8K_TXD_STATUS_MULTICAST_TX           0x00000008
1102 #define MWL8K_TXD_STATUS_FW_OWNED               0x80000000
1103
1104 #define MWL8K_QOS_QLEN_UNSPEC                   0xff00
1105 #define MWL8K_QOS_ACK_POLICY_MASK               0x0060
1106 #define MWL8K_QOS_ACK_POLICY_NORMAL             0x0000
1107 #define MWL8K_QOS_ACK_POLICY_BLOCKACK           0x0060
1108 #define MWL8K_QOS_EOSP                          0x0010
1109
1110 struct mwl8k_tx_desc {
1111         __le32 status;
1112         __u8 data_rate;
1113         __u8 tx_priority;
1114         __le16 qos_control;
1115         __le32 pkt_phys_addr;
1116         __le16 pkt_len;
1117         __u8 dest_MAC_addr[ETH_ALEN];
1118         __le32 next_txd_phys_addr;
1119         __le32 reserved;
1120         __le16 rate_info;
1121         __u8 peer_id;
1122         __u8 tx_frag_cnt;
1123 } __attribute__((packed));
1124
1125 #define MWL8K_TX_DESCS          128
1126
1127 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1128 {
1129         struct mwl8k_priv *priv = hw->priv;
1130         struct mwl8k_tx_queue *txq = priv->txq + index;
1131         int size;
1132         int i;
1133
1134         txq->len = 0;
1135         txq->head = 0;
1136         txq->tail = 0;
1137
1138         size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1139
1140         txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1141         if (txq->txd == NULL) {
1142                 printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
1143                        wiphy_name(hw->wiphy));
1144                 return -ENOMEM;
1145         }
1146         memset(txq->txd, 0, size);
1147
1148         txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1149         if (txq->skb == NULL) {
1150                 printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
1151                        wiphy_name(hw->wiphy));
1152                 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1153                 return -ENOMEM;
1154         }
1155         memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1156
1157         for (i = 0; i < MWL8K_TX_DESCS; i++) {
1158                 struct mwl8k_tx_desc *tx_desc;
1159                 int nexti;
1160
1161                 tx_desc = txq->txd + i;
1162                 nexti = (i + 1) % MWL8K_TX_DESCS;
1163
1164                 tx_desc->status = 0;
1165                 tx_desc->next_txd_phys_addr =
1166                         cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1167         }
1168
1169         return 0;
1170 }
1171
1172 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1173 {
1174         iowrite32(MWL8K_H2A_INT_PPA_READY,
1175                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1176         iowrite32(MWL8K_H2A_INT_DUMMY,
1177                 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1178         ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1179 }
1180
1181 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1182 {
1183         struct mwl8k_priv *priv = hw->priv;
1184         int i;
1185
1186         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1187                 struct mwl8k_tx_queue *txq = priv->txq + i;
1188                 int fw_owned = 0;
1189                 int drv_owned = 0;
1190                 int unused = 0;
1191                 int desc;
1192
1193                 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1194                         struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1195                         u32 status;
1196
1197                         status = le32_to_cpu(tx_desc->status);
1198                         if (status & MWL8K_TXD_STATUS_FW_OWNED)
1199                                 fw_owned++;
1200                         else
1201                                 drv_owned++;
1202
1203                         if (tx_desc->pkt_len == 0)
1204                                 unused++;
1205                 }
1206
1207                 printk(KERN_ERR "%s: txq[%d] len=%d head=%d tail=%d "
1208                        "fw_owned=%d drv_owned=%d unused=%d\n",
1209                        wiphy_name(hw->wiphy), i,
1210                        txq->len, txq->head, txq->tail,
1211                        fw_owned, drv_owned, unused);
1212         }
1213 }
1214
1215 /*
1216  * Must be called with priv->fw_mutex held and tx queues stopped.
1217  */
1218 #define MWL8K_TX_WAIT_TIMEOUT_MS        5000
1219
1220 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1221 {
1222         struct mwl8k_priv *priv = hw->priv;
1223         DECLARE_COMPLETION_ONSTACK(tx_wait);
1224         int retry;
1225         int rc;
1226
1227         might_sleep();
1228
1229         /*
1230          * The TX queues are stopped at this point, so this test
1231          * doesn't need to take ->tx_lock.
1232          */
1233         if (!priv->pending_tx_pkts)
1234                 return 0;
1235
1236         retry = 0;
1237         rc = 0;
1238
1239         spin_lock_bh(&priv->tx_lock);
1240         priv->tx_wait = &tx_wait;
1241         while (!rc) {
1242                 int oldcount;
1243                 unsigned long timeout;
1244
1245                 oldcount = priv->pending_tx_pkts;
1246
1247                 spin_unlock_bh(&priv->tx_lock);
1248                 timeout = wait_for_completion_timeout(&tx_wait,
1249                             msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1250                 spin_lock_bh(&priv->tx_lock);
1251
1252                 if (timeout) {
1253                         WARN_ON(priv->pending_tx_pkts);
1254                         if (retry) {
1255                                 printk(KERN_NOTICE "%s: tx rings drained\n",
1256                                        wiphy_name(hw->wiphy));
1257                         }
1258                         break;
1259                 }
1260
1261                 if (priv->pending_tx_pkts < oldcount) {
1262                         printk(KERN_NOTICE "%s: waiting for tx rings "
1263                                "to drain (%d -> %d pkts)\n",
1264                                wiphy_name(hw->wiphy), oldcount,
1265                                priv->pending_tx_pkts);
1266                         retry = 1;
1267                         continue;
1268                 }
1269
1270                 priv->tx_wait = NULL;
1271
1272                 printk(KERN_ERR "%s: tx rings stuck for %d ms\n",
1273                        wiphy_name(hw->wiphy), MWL8K_TX_WAIT_TIMEOUT_MS);
1274                 mwl8k_dump_tx_rings(hw);
1275
1276                 rc = -ETIMEDOUT;
1277         }
1278         spin_unlock_bh(&priv->tx_lock);
1279
1280         return rc;
1281 }
1282
1283 #define MWL8K_TXD_SUCCESS(status)                               \
1284         ((status) & (MWL8K_TXD_STATUS_OK |                      \
1285                      MWL8K_TXD_STATUS_OK_RETRY |                \
1286                      MWL8K_TXD_STATUS_OK_MORE_RETRY))
1287
1288 static int
1289 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1290 {
1291         struct mwl8k_priv *priv = hw->priv;
1292         struct mwl8k_tx_queue *txq = priv->txq + index;
1293         int processed;
1294
1295         processed = 0;
1296         while (txq->len > 0 && limit--) {
1297                 int tx;
1298                 struct mwl8k_tx_desc *tx_desc;
1299                 unsigned long addr;
1300                 int size;
1301                 struct sk_buff *skb;
1302                 struct ieee80211_tx_info *info;
1303                 u32 status;
1304
1305                 tx = txq->head;
1306                 tx_desc = txq->txd + tx;
1307
1308                 status = le32_to_cpu(tx_desc->status);
1309
1310                 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1311                         if (!force)
1312                                 break;
1313                         tx_desc->status &=
1314                                 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1315                 }
1316
1317                 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1318                 BUG_ON(txq->len == 0);
1319                 txq->len--;
1320                 priv->pending_tx_pkts--;
1321
1322                 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1323                 size = le16_to_cpu(tx_desc->pkt_len);
1324                 skb = txq->skb[tx];
1325                 txq->skb[tx] = NULL;
1326
1327                 BUG_ON(skb == NULL);
1328                 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1329
1330                 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1331
1332                 /* Mark descriptor as unused */
1333                 tx_desc->pkt_phys_addr = 0;
1334                 tx_desc->pkt_len = 0;
1335
1336                 info = IEEE80211_SKB_CB(skb);
1337                 ieee80211_tx_info_clear_status(info);
1338                 if (MWL8K_TXD_SUCCESS(status))
1339                         info->flags |= IEEE80211_TX_STAT_ACK;
1340
1341                 ieee80211_tx_status_irqsafe(hw, skb);
1342
1343                 processed++;
1344         }
1345
1346         if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1347                 ieee80211_wake_queue(hw, index);
1348
1349         return processed;
1350 }
1351
1352 /* must be called only when the card's transmit is completely halted */
1353 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1354 {
1355         struct mwl8k_priv *priv = hw->priv;
1356         struct mwl8k_tx_queue *txq = priv->txq + index;
1357
1358         mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1359
1360         kfree(txq->skb);
1361         txq->skb = NULL;
1362
1363         pci_free_consistent(priv->pdev,
1364                             MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1365                             txq->txd, txq->txd_dma);
1366         txq->txd = NULL;
1367 }
1368
1369 static int
1370 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1371 {
1372         struct mwl8k_priv *priv = hw->priv;
1373         struct ieee80211_tx_info *tx_info;
1374         struct mwl8k_vif *mwl8k_vif;
1375         struct ieee80211_hdr *wh;
1376         struct mwl8k_tx_queue *txq;
1377         struct mwl8k_tx_desc *tx;
1378         dma_addr_t dma;
1379         u32 txstatus;
1380         u8 txdatarate;
1381         u16 qos;
1382
1383         wh = (struct ieee80211_hdr *)skb->data;
1384         if (ieee80211_is_data_qos(wh->frame_control))
1385                 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1386         else
1387                 qos = 0;
1388
1389         mwl8k_add_dma_header(skb);
1390         wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1391
1392         tx_info = IEEE80211_SKB_CB(skb);
1393         mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1394
1395         if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1396                 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1397                 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1398                 mwl8k_vif->seqno += 0x10;
1399         }
1400
1401         /* Setup firmware control bit fields for each frame type.  */
1402         txstatus = 0;
1403         txdatarate = 0;
1404         if (ieee80211_is_mgmt(wh->frame_control) ||
1405             ieee80211_is_ctl(wh->frame_control)) {
1406                 txdatarate = 0;
1407                 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1408         } else if (ieee80211_is_data(wh->frame_control)) {
1409                 txdatarate = 1;
1410                 if (is_multicast_ether_addr(wh->addr1))
1411                         txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1412
1413                 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1414                 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1415                         qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1416                 else
1417                         qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1418         }
1419
1420         dma = pci_map_single(priv->pdev, skb->data,
1421                                 skb->len, PCI_DMA_TODEVICE);
1422
1423         if (pci_dma_mapping_error(priv->pdev, dma)) {
1424                 printk(KERN_DEBUG "%s: failed to dma map skb, "
1425                        "dropping TX frame.\n", wiphy_name(hw->wiphy));
1426                 dev_kfree_skb(skb);
1427                 return NETDEV_TX_OK;
1428         }
1429
1430         spin_lock_bh(&priv->tx_lock);
1431
1432         txq = priv->txq + index;
1433
1434         BUG_ON(txq->skb[txq->tail] != NULL);
1435         txq->skb[txq->tail] = skb;
1436
1437         tx = txq->txd + txq->tail;
1438         tx->data_rate = txdatarate;
1439         tx->tx_priority = index;
1440         tx->qos_control = cpu_to_le16(qos);
1441         tx->pkt_phys_addr = cpu_to_le32(dma);
1442         tx->pkt_len = cpu_to_le16(skb->len);
1443         tx->rate_info = 0;
1444         if (!priv->ap_fw && tx_info->control.sta != NULL)
1445                 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1446         else
1447                 tx->peer_id = 0;
1448         wmb();
1449         tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1450
1451         txq->len++;
1452         priv->pending_tx_pkts++;
1453
1454         txq->tail++;
1455         if (txq->tail == MWL8K_TX_DESCS)
1456                 txq->tail = 0;
1457
1458         if (txq->head == txq->tail)
1459                 ieee80211_stop_queue(hw, index);
1460
1461         mwl8k_tx_start(priv);
1462
1463         spin_unlock_bh(&priv->tx_lock);
1464
1465         return NETDEV_TX_OK;
1466 }
1467
1468
1469 /*
1470  * Firmware access.
1471  *
1472  * We have the following requirements for issuing firmware commands:
1473  * - Some commands require that the packet transmit path is idle when
1474  *   the command is issued.  (For simplicity, we'll just quiesce the
1475  *   transmit path for every command.)
1476  * - There are certain sequences of commands that need to be issued to
1477  *   the hardware sequentially, with no other intervening commands.
1478  *
1479  * This leads to an implementation of a "firmware lock" as a mutex that
1480  * can be taken recursively, and which is taken by both the low-level
1481  * command submission function (mwl8k_post_cmd) as well as any users of
1482  * that function that require issuing of an atomic sequence of commands,
1483  * and quiesces the transmit path whenever it's taken.
1484  */
1485 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1486 {
1487         struct mwl8k_priv *priv = hw->priv;
1488
1489         if (priv->fw_mutex_owner != current) {
1490                 int rc;
1491
1492                 mutex_lock(&priv->fw_mutex);
1493                 ieee80211_stop_queues(hw);
1494
1495                 rc = mwl8k_tx_wait_empty(hw);
1496                 if (rc) {
1497                         ieee80211_wake_queues(hw);
1498                         mutex_unlock(&priv->fw_mutex);
1499
1500                         return rc;
1501                 }
1502
1503                 priv->fw_mutex_owner = current;
1504         }
1505
1506         priv->fw_mutex_depth++;
1507
1508         return 0;
1509 }
1510
1511 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1512 {
1513         struct mwl8k_priv *priv = hw->priv;
1514
1515         if (!--priv->fw_mutex_depth) {
1516                 ieee80211_wake_queues(hw);
1517                 priv->fw_mutex_owner = NULL;
1518                 mutex_unlock(&priv->fw_mutex);
1519         }
1520 }
1521
1522
1523 /*
1524  * Command processing.
1525  */
1526
1527 /* Timeout firmware commands after 10s */
1528 #define MWL8K_CMD_TIMEOUT_MS    10000
1529
1530 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1531 {
1532         DECLARE_COMPLETION_ONSTACK(cmd_wait);
1533         struct mwl8k_priv *priv = hw->priv;
1534         void __iomem *regs = priv->regs;
1535         dma_addr_t dma_addr;
1536         unsigned int dma_size;
1537         int rc;
1538         unsigned long timeout = 0;
1539         u8 buf[32];
1540
1541         cmd->result = 0xffff;
1542         dma_size = le16_to_cpu(cmd->length);
1543         dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1544                                   PCI_DMA_BIDIRECTIONAL);
1545         if (pci_dma_mapping_error(priv->pdev, dma_addr))
1546                 return -ENOMEM;
1547
1548         rc = mwl8k_fw_lock(hw);
1549         if (rc) {
1550                 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1551                                                 PCI_DMA_BIDIRECTIONAL);
1552                 return rc;
1553         }
1554
1555         priv->hostcmd_wait = &cmd_wait;
1556         iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1557         iowrite32(MWL8K_H2A_INT_DOORBELL,
1558                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1559         iowrite32(MWL8K_H2A_INT_DUMMY,
1560                 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1561
1562         timeout = wait_for_completion_timeout(&cmd_wait,
1563                                 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1564
1565         priv->hostcmd_wait = NULL;
1566
1567         mwl8k_fw_unlock(hw);
1568
1569         pci_unmap_single(priv->pdev, dma_addr, dma_size,
1570                                         PCI_DMA_BIDIRECTIONAL);
1571
1572         if (!timeout) {
1573                 printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
1574                        wiphy_name(hw->wiphy),
1575                        mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1576                        MWL8K_CMD_TIMEOUT_MS);
1577                 rc = -ETIMEDOUT;
1578         } else {
1579                 int ms;
1580
1581                 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1582
1583                 rc = cmd->result ? -EINVAL : 0;
1584                 if (rc)
1585                         printk(KERN_ERR "%s: Command %s error 0x%x\n",
1586                                wiphy_name(hw->wiphy),
1587                                mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1588                                le16_to_cpu(cmd->result));
1589                 else if (ms > 2000)
1590                         printk(KERN_NOTICE "%s: Command %s took %d ms\n",
1591                                wiphy_name(hw->wiphy),
1592                                mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1593                                ms);
1594         }
1595
1596         return rc;
1597 }
1598
1599 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1600                                  struct ieee80211_vif *vif,
1601                                  struct mwl8k_cmd_pkt *cmd)
1602 {
1603         if (vif != NULL)
1604                 cmd->macid = MWL8K_VIF(vif)->macid;
1605         return mwl8k_post_cmd(hw, cmd);
1606 }
1607
1608 /*
1609  * Setup code shared between STA and AP firmware images.
1610  */
1611 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1612 {
1613         struct mwl8k_priv *priv = hw->priv;
1614
1615         BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1616         memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1617
1618         BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1619         memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1620
1621         priv->band_24.band = IEEE80211_BAND_2GHZ;
1622         priv->band_24.channels = priv->channels_24;
1623         priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1624         priv->band_24.bitrates = priv->rates_24;
1625         priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1626
1627         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1628 }
1629
1630 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1631 {
1632         struct mwl8k_priv *priv = hw->priv;
1633
1634         BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1635         memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1636
1637         BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1638         memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1639
1640         priv->band_50.band = IEEE80211_BAND_5GHZ;
1641         priv->band_50.channels = priv->channels_50;
1642         priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1643         priv->band_50.bitrates = priv->rates_50;
1644         priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1645
1646         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1647 }
1648
1649 /*
1650  * CMD_GET_HW_SPEC (STA version).
1651  */
1652 struct mwl8k_cmd_get_hw_spec_sta {
1653         struct mwl8k_cmd_pkt header;
1654         __u8 hw_rev;
1655         __u8 host_interface;
1656         __le16 num_mcaddrs;
1657         __u8 perm_addr[ETH_ALEN];
1658         __le16 region_code;
1659         __le32 fw_rev;
1660         __le32 ps_cookie;
1661         __le32 caps;
1662         __u8 mcs_bitmap[16];
1663         __le32 rx_queue_ptr;
1664         __le32 num_tx_queues;
1665         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1666         __le32 caps2;
1667         __le32 num_tx_desc_per_queue;
1668         __le32 total_rxd;
1669 } __attribute__((packed));
1670
1671 #define MWL8K_CAP_MAX_AMSDU             0x20000000
1672 #define MWL8K_CAP_GREENFIELD            0x08000000
1673 #define MWL8K_CAP_AMPDU                 0x04000000
1674 #define MWL8K_CAP_RX_STBC               0x01000000
1675 #define MWL8K_CAP_TX_STBC               0x00800000
1676 #define MWL8K_CAP_SHORTGI_40MHZ         0x00400000
1677 #define MWL8K_CAP_SHORTGI_20MHZ         0x00200000
1678 #define MWL8K_CAP_RX_ANTENNA_MASK       0x000e0000
1679 #define MWL8K_CAP_TX_ANTENNA_MASK       0x0001c000
1680 #define MWL8K_CAP_DELAY_BA              0x00003000
1681 #define MWL8K_CAP_MIMO                  0x00000200
1682 #define MWL8K_CAP_40MHZ                 0x00000100
1683 #define MWL8K_CAP_BAND_MASK             0x00000007
1684 #define MWL8K_CAP_5GHZ                  0x00000004
1685 #define MWL8K_CAP_2GHZ4                 0x00000001
1686
1687 static void
1688 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1689                   struct ieee80211_supported_band *band, u32 cap)
1690 {
1691         int rx_streams;
1692         int tx_streams;
1693
1694         band->ht_cap.ht_supported = 1;
1695
1696         if (cap & MWL8K_CAP_MAX_AMSDU)
1697                 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1698         if (cap & MWL8K_CAP_GREENFIELD)
1699                 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1700         if (cap & MWL8K_CAP_AMPDU) {
1701                 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1702                 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1703                 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1704         }
1705         if (cap & MWL8K_CAP_RX_STBC)
1706                 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1707         if (cap & MWL8K_CAP_TX_STBC)
1708                 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1709         if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1710                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1711         if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1712                 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1713         if (cap & MWL8K_CAP_DELAY_BA)
1714                 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1715         if (cap & MWL8K_CAP_40MHZ)
1716                 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1717
1718         rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1719         tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1720
1721         band->ht_cap.mcs.rx_mask[0] = 0xff;
1722         if (rx_streams >= 2)
1723                 band->ht_cap.mcs.rx_mask[1] = 0xff;
1724         if (rx_streams >= 3)
1725                 band->ht_cap.mcs.rx_mask[2] = 0xff;
1726         band->ht_cap.mcs.rx_mask[4] = 0x01;
1727         band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1728
1729         if (rx_streams != tx_streams) {
1730                 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1731                 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1732                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1733         }
1734 }
1735
1736 static void
1737 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1738 {
1739         struct mwl8k_priv *priv = hw->priv;
1740
1741         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1742                 mwl8k_setup_2ghz_band(hw);
1743                 if (caps & MWL8K_CAP_MIMO)
1744                         mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1745         }
1746
1747         if (caps & MWL8K_CAP_5GHZ) {
1748                 mwl8k_setup_5ghz_band(hw);
1749                 if (caps & MWL8K_CAP_MIMO)
1750                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1751         }
1752 }
1753
1754 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1755 {
1756         struct mwl8k_priv *priv = hw->priv;
1757         struct mwl8k_cmd_get_hw_spec_sta *cmd;
1758         int rc;
1759         int i;
1760
1761         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1762         if (cmd == NULL)
1763                 return -ENOMEM;
1764
1765         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1766         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1767
1768         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1769         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1770         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1771         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1772         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1773                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1774         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1775         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1776
1777         rc = mwl8k_post_cmd(hw, &cmd->header);
1778
1779         if (!rc) {
1780                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1781                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1782                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1783                 priv->hw_rev = cmd->hw_rev;
1784                 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1785                 priv->ap_macids_supported = 0x00000000;
1786                 priv->sta_macids_supported = 0x00000001;
1787         }
1788
1789         kfree(cmd);
1790         return rc;
1791 }
1792
1793 /*
1794  * CMD_GET_HW_SPEC (AP version).
1795  */
1796 struct mwl8k_cmd_get_hw_spec_ap {
1797         struct mwl8k_cmd_pkt header;
1798         __u8 hw_rev;
1799         __u8 host_interface;
1800         __le16 num_wcb;
1801         __le16 num_mcaddrs;
1802         __u8 perm_addr[ETH_ALEN];
1803         __le16 region_code;
1804         __le16 num_antenna;
1805         __le32 fw_rev;
1806         __le32 wcbbase0;
1807         __le32 rxwrptr;
1808         __le32 rxrdptr;
1809         __le32 ps_cookie;
1810         __le32 wcbbase1;
1811         __le32 wcbbase2;
1812         __le32 wcbbase3;
1813 } __attribute__((packed));
1814
1815 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1816 {
1817         struct mwl8k_priv *priv = hw->priv;
1818         struct mwl8k_cmd_get_hw_spec_ap *cmd;
1819         int rc;
1820
1821         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1822         if (cmd == NULL)
1823                 return -ENOMEM;
1824
1825         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1826         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1827
1828         memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1829         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1830
1831         rc = mwl8k_post_cmd(hw, &cmd->header);
1832
1833         if (!rc) {
1834                 int off;
1835
1836                 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1837                 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1838                 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1839                 priv->hw_rev = cmd->hw_rev;
1840                 mwl8k_setup_2ghz_band(hw);
1841                 priv->ap_macids_supported = 0x000000ff;
1842                 priv->sta_macids_supported = 0x00000000;
1843
1844                 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1845                 iowrite32(cpu_to_le32(priv->txq[0].txd_dma), priv->sram + off);
1846
1847                 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1848                 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1849
1850                 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1851                 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1852
1853                 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1854                 iowrite32(cpu_to_le32(priv->txq[1].txd_dma), priv->sram + off);
1855
1856                 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1857                 iowrite32(cpu_to_le32(priv->txq[2].txd_dma), priv->sram + off);
1858
1859                 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1860                 iowrite32(cpu_to_le32(priv->txq[3].txd_dma), priv->sram + off);
1861         }
1862
1863         kfree(cmd);
1864         return rc;
1865 }
1866
1867 /*
1868  * CMD_SET_HW_SPEC.
1869  */
1870 struct mwl8k_cmd_set_hw_spec {
1871         struct mwl8k_cmd_pkt header;
1872         __u8 hw_rev;
1873         __u8 host_interface;
1874         __le16 num_mcaddrs;
1875         __u8 perm_addr[ETH_ALEN];
1876         __le16 region_code;
1877         __le32 fw_rev;
1878         __le32 ps_cookie;
1879         __le32 caps;
1880         __le32 rx_queue_ptr;
1881         __le32 num_tx_queues;
1882         __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1883         __le32 flags;
1884         __le32 num_tx_desc_per_queue;
1885         __le32 total_rxd;
1886 } __attribute__((packed));
1887
1888 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT           0x00000080
1889 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP       0x00000020
1890 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON          0x00000010
1891
1892 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1893 {
1894         struct mwl8k_priv *priv = hw->priv;
1895         struct mwl8k_cmd_set_hw_spec *cmd;
1896         int rc;
1897         int i;
1898
1899         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1900         if (cmd == NULL)
1901                 return -ENOMEM;
1902
1903         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1904         cmd->header.length = cpu_to_le16(sizeof(*cmd));
1905
1906         cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1907         cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1908         cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1909         for (i = 0; i < MWL8K_TX_QUEUES; i++)
1910                 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1911         cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
1912                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
1913                                  MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
1914         cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1915         cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1916
1917         rc = mwl8k_post_cmd(hw, &cmd->header);
1918         kfree(cmd);
1919
1920         return rc;
1921 }
1922
1923 /*
1924  * CMD_MAC_MULTICAST_ADR.
1925  */
1926 struct mwl8k_cmd_mac_multicast_adr {
1927         struct mwl8k_cmd_pkt header;
1928         __le16 action;
1929         __le16 numaddr;
1930         __u8 addr[0][ETH_ALEN];
1931 };
1932
1933 #define MWL8K_ENABLE_RX_DIRECTED        0x0001
1934 #define MWL8K_ENABLE_RX_MULTICAST       0x0002
1935 #define MWL8K_ENABLE_RX_ALL_MULTICAST   0x0004
1936 #define MWL8K_ENABLE_RX_BROADCAST       0x0008
1937
1938 static struct mwl8k_cmd_pkt *
1939 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1940                               struct netdev_hw_addr_list *mc_list)
1941 {
1942         struct mwl8k_priv *priv = hw->priv;
1943         struct mwl8k_cmd_mac_multicast_adr *cmd;
1944         int size;
1945         int mc_count = 0;
1946
1947         if (mc_list)
1948                 mc_count = netdev_hw_addr_list_count(mc_list);
1949
1950         if (allmulti || mc_count > priv->num_mcaddrs) {
1951                 allmulti = 1;
1952                 mc_count = 0;
1953         }
1954
1955         size = sizeof(*cmd) + mc_count * ETH_ALEN;
1956
1957         cmd = kzalloc(size, GFP_ATOMIC);
1958         if (cmd == NULL)
1959                 return NULL;
1960
1961         cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
1962         cmd->header.length = cpu_to_le16(size);
1963         cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
1964                                   MWL8K_ENABLE_RX_BROADCAST);
1965
1966         if (allmulti) {
1967                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
1968         } else if (mc_count) {
1969                 struct netdev_hw_addr *ha;
1970                 int i = 0;
1971
1972                 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
1973                 cmd->numaddr = cpu_to_le16(mc_count);
1974                 netdev_hw_addr_list_for_each(ha, mc_list) {
1975                         memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
1976                 }
1977         }
1978
1979         return &cmd->header;
1980 }
1981
1982 /*
1983  * CMD_GET_STAT.
1984  */
1985 struct mwl8k_cmd_get_stat {
1986         struct mwl8k_cmd_pkt header;
1987         __le32 stats[64];
1988 } __attribute__((packed));
1989
1990 #define MWL8K_STAT_ACK_FAILURE  9
1991 #define MWL8K_STAT_RTS_FAILURE  12
1992 #define MWL8K_STAT_FCS_ERROR    24
1993 #define MWL8K_STAT_RTS_SUCCESS  11
1994
1995 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
1996                               struct ieee80211_low_level_stats *stats)
1997 {
1998         struct mwl8k_cmd_get_stat *cmd;
1999         int rc;
2000
2001         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2002         if (cmd == NULL)
2003                 return -ENOMEM;
2004
2005         cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2006         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2007
2008         rc = mwl8k_post_cmd(hw, &cmd->header);
2009         if (!rc) {
2010                 stats->dot11ACKFailureCount =
2011                         le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2012                 stats->dot11RTSFailureCount =
2013                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2014                 stats->dot11FCSErrorCount =
2015                         le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2016                 stats->dot11RTSSuccessCount =
2017                         le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2018         }
2019         kfree(cmd);
2020
2021         return rc;
2022 }
2023
2024 /*
2025  * CMD_RADIO_CONTROL.
2026  */
2027 struct mwl8k_cmd_radio_control {
2028         struct mwl8k_cmd_pkt header;
2029         __le16 action;
2030         __le16 control;
2031         __le16 radio_on;
2032 } __attribute__((packed));
2033
2034 static int
2035 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2036 {
2037         struct mwl8k_priv *priv = hw->priv;
2038         struct mwl8k_cmd_radio_control *cmd;
2039         int rc;
2040
2041         if (enable == priv->radio_on && !force)
2042                 return 0;
2043
2044         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2045         if (cmd == NULL)
2046                 return -ENOMEM;
2047
2048         cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2049         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2050         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2051         cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2052         cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2053
2054         rc = mwl8k_post_cmd(hw, &cmd->header);
2055         kfree(cmd);
2056
2057         if (!rc)
2058                 priv->radio_on = enable;
2059
2060         return rc;
2061 }
2062
2063 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2064 {
2065         return mwl8k_cmd_radio_control(hw, 0, 0);
2066 }
2067
2068 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2069 {
2070         return mwl8k_cmd_radio_control(hw, 1, 0);
2071 }
2072
2073 static int
2074 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2075 {
2076         struct mwl8k_priv *priv = hw->priv;
2077
2078         priv->radio_short_preamble = short_preamble;
2079
2080         return mwl8k_cmd_radio_control(hw, 1, 1);
2081 }
2082
2083 /*
2084  * CMD_RF_TX_POWER.
2085  */
2086 #define MWL8K_TX_POWER_LEVEL_TOTAL      8
2087
2088 struct mwl8k_cmd_rf_tx_power {
2089         struct mwl8k_cmd_pkt header;
2090         __le16 action;
2091         __le16 support_level;
2092         __le16 current_level;
2093         __le16 reserved;
2094         __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2095 } __attribute__((packed));
2096
2097 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2098 {
2099         struct mwl8k_cmd_rf_tx_power *cmd;
2100         int rc;
2101
2102         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2103         if (cmd == NULL)
2104                 return -ENOMEM;
2105
2106         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2107         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2108         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2109         cmd->support_level = cpu_to_le16(dBm);
2110
2111         rc = mwl8k_post_cmd(hw, &cmd->header);
2112         kfree(cmd);
2113
2114         return rc;
2115 }
2116
2117 /*
2118  * CMD_RF_ANTENNA.
2119  */
2120 struct mwl8k_cmd_rf_antenna {
2121         struct mwl8k_cmd_pkt header;
2122         __le16 antenna;
2123         __le16 mode;
2124 } __attribute__((packed));
2125
2126 #define MWL8K_RF_ANTENNA_RX             1
2127 #define MWL8K_RF_ANTENNA_TX             2
2128
2129 static int
2130 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2131 {
2132         struct mwl8k_cmd_rf_antenna *cmd;
2133         int rc;
2134
2135         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2136         if (cmd == NULL)
2137                 return -ENOMEM;
2138
2139         cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2140         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2141         cmd->antenna = cpu_to_le16(antenna);
2142         cmd->mode = cpu_to_le16(mask);
2143
2144         rc = mwl8k_post_cmd(hw, &cmd->header);
2145         kfree(cmd);
2146
2147         return rc;
2148 }
2149
2150 /*
2151  * CMD_SET_BEACON.
2152  */
2153 struct mwl8k_cmd_set_beacon {
2154         struct mwl8k_cmd_pkt header;
2155         __le16 beacon_len;
2156         __u8 beacon[0];
2157 };
2158
2159 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2160                                 struct ieee80211_vif *vif, u8 *beacon, int len)
2161 {
2162         struct mwl8k_cmd_set_beacon *cmd;
2163         int rc;
2164
2165         cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2166         if (cmd == NULL)
2167                 return -ENOMEM;
2168
2169         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2170         cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2171         cmd->beacon_len = cpu_to_le16(len);
2172         memcpy(cmd->beacon, beacon, len);
2173
2174         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2175         kfree(cmd);
2176
2177         return rc;
2178 }
2179
2180 /*
2181  * CMD_SET_PRE_SCAN.
2182  */
2183 struct mwl8k_cmd_set_pre_scan {
2184         struct mwl8k_cmd_pkt header;
2185 } __attribute__((packed));
2186
2187 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2188 {
2189         struct mwl8k_cmd_set_pre_scan *cmd;
2190         int rc;
2191
2192         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2193         if (cmd == NULL)
2194                 return -ENOMEM;
2195
2196         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2197         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2198
2199         rc = mwl8k_post_cmd(hw, &cmd->header);
2200         kfree(cmd);
2201
2202         return rc;
2203 }
2204
2205 /*
2206  * CMD_SET_POST_SCAN.
2207  */
2208 struct mwl8k_cmd_set_post_scan {
2209         struct mwl8k_cmd_pkt header;
2210         __le32 isibss;
2211         __u8 bssid[ETH_ALEN];
2212 } __attribute__((packed));
2213
2214 static int
2215 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2216 {
2217         struct mwl8k_cmd_set_post_scan *cmd;
2218         int rc;
2219
2220         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2221         if (cmd == NULL)
2222                 return -ENOMEM;
2223
2224         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2225         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2226         cmd->isibss = 0;
2227         memcpy(cmd->bssid, mac, ETH_ALEN);
2228
2229         rc = mwl8k_post_cmd(hw, &cmd->header);
2230         kfree(cmd);
2231
2232         return rc;
2233 }
2234
2235 /*
2236  * CMD_SET_RF_CHANNEL.
2237  */
2238 struct mwl8k_cmd_set_rf_channel {
2239         struct mwl8k_cmd_pkt header;
2240         __le16 action;
2241         __u8 current_channel;
2242         __le32 channel_flags;
2243 } __attribute__((packed));
2244
2245 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2246                                     struct ieee80211_conf *conf)
2247 {
2248         struct ieee80211_channel *channel = conf->channel;
2249         struct mwl8k_cmd_set_rf_channel *cmd;
2250         int rc;
2251
2252         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2253         if (cmd == NULL)
2254                 return -ENOMEM;
2255
2256         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2257         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2258         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2259         cmd->current_channel = channel->hw_value;
2260
2261         if (channel->band == IEEE80211_BAND_2GHZ)
2262                 cmd->channel_flags |= cpu_to_le32(0x00000001);
2263         else if (channel->band == IEEE80211_BAND_5GHZ)
2264                 cmd->channel_flags |= cpu_to_le32(0x00000004);
2265
2266         if (conf->channel_type == NL80211_CHAN_NO_HT ||
2267             conf->channel_type == NL80211_CHAN_HT20)
2268                 cmd->channel_flags |= cpu_to_le32(0x00000080);
2269         else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2270                 cmd->channel_flags |= cpu_to_le32(0x000001900);
2271         else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2272                 cmd->channel_flags |= cpu_to_le32(0x000000900);
2273
2274         rc = mwl8k_post_cmd(hw, &cmd->header);
2275         kfree(cmd);
2276
2277         return rc;
2278 }
2279
2280 /*
2281  * CMD_SET_AID.
2282  */
2283 #define MWL8K_FRAME_PROT_DISABLED                       0x00
2284 #define MWL8K_FRAME_PROT_11G                            0x07
2285 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY              0x02
2286 #define MWL8K_FRAME_PROT_11N_HT_ALL                     0x06
2287
2288 struct mwl8k_cmd_update_set_aid {
2289         struct  mwl8k_cmd_pkt header;
2290         __le16  aid;
2291
2292          /* AP's MAC address (BSSID) */
2293         __u8    bssid[ETH_ALEN];
2294         __le16  protection_mode;
2295         __u8    supp_rates[14];
2296 } __attribute__((packed));
2297
2298 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2299 {
2300         int i;
2301         int j;
2302
2303         /*
2304          * Clear nonstandard rates 4 and 13.
2305          */
2306         mask &= 0x1fef;
2307
2308         for (i = 0, j = 0; i < 14; i++) {
2309                 if (mask & (1 << i))
2310                         rates[j++] = mwl8k_rates_24[i].hw_value;
2311         }
2312 }
2313
2314 static int
2315 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2316                   struct ieee80211_vif *vif, u32 legacy_rate_mask)
2317 {
2318         struct mwl8k_cmd_update_set_aid *cmd;
2319         u16 prot_mode;
2320         int rc;
2321
2322         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2323         if (cmd == NULL)
2324                 return -ENOMEM;
2325
2326         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2327         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2328         cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2329         memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2330
2331         if (vif->bss_conf.use_cts_prot) {
2332                 prot_mode = MWL8K_FRAME_PROT_11G;
2333         } else {
2334                 switch (vif->bss_conf.ht_operation_mode &
2335                         IEEE80211_HT_OP_MODE_PROTECTION) {
2336                 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2337                         prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2338                         break;
2339                 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2340                         prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2341                         break;
2342                 default:
2343                         prot_mode = MWL8K_FRAME_PROT_DISABLED;
2344                         break;
2345                 }
2346         }
2347         cmd->protection_mode = cpu_to_le16(prot_mode);
2348
2349         legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2350
2351         rc = mwl8k_post_cmd(hw, &cmd->header);
2352         kfree(cmd);
2353
2354         return rc;
2355 }
2356
2357 /*
2358  * CMD_SET_RATE.
2359  */
2360 struct mwl8k_cmd_set_rate {
2361         struct  mwl8k_cmd_pkt header;
2362         __u8    legacy_rates[14];
2363
2364         /* Bitmap for supported MCS codes.  */
2365         __u8    mcs_set[16];
2366         __u8    reserved[16];
2367 } __attribute__((packed));
2368
2369 static int
2370 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2371                    u32 legacy_rate_mask, u8 *mcs_rates)
2372 {
2373         struct mwl8k_cmd_set_rate *cmd;
2374         int rc;
2375
2376         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2377         if (cmd == NULL)
2378                 return -ENOMEM;
2379
2380         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2381         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2382         legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2383         memcpy(cmd->mcs_set, mcs_rates, 16);
2384
2385         rc = mwl8k_post_cmd(hw, &cmd->header);
2386         kfree(cmd);
2387
2388         return rc;
2389 }
2390
2391 /*
2392  * CMD_FINALIZE_JOIN.
2393  */
2394 #define MWL8K_FJ_BEACON_MAXLEN  128
2395
2396 struct mwl8k_cmd_finalize_join {
2397         struct mwl8k_cmd_pkt header;
2398         __le32 sleep_interval;  /* Number of beacon periods to sleep */
2399         __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2400 } __attribute__((packed));
2401
2402 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2403                                    int framelen, int dtim)
2404 {
2405         struct mwl8k_cmd_finalize_join *cmd;
2406         struct ieee80211_mgmt *payload = frame;
2407         int payload_len;
2408         int rc;
2409
2410         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2411         if (cmd == NULL)
2412                 return -ENOMEM;
2413
2414         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2415         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2416         cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2417
2418         payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2419         if (payload_len < 0)
2420                 payload_len = 0;
2421         else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2422                 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2423
2424         memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2425
2426         rc = mwl8k_post_cmd(hw, &cmd->header);
2427         kfree(cmd);
2428
2429         return rc;
2430 }
2431
2432 /*
2433  * CMD_SET_RTS_THRESHOLD.
2434  */
2435 struct mwl8k_cmd_set_rts_threshold {
2436         struct mwl8k_cmd_pkt header;
2437         __le16 action;
2438         __le16 threshold;
2439 } __attribute__((packed));
2440
2441 static int
2442 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2443 {
2444         struct mwl8k_cmd_set_rts_threshold *cmd;
2445         int rc;
2446
2447         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2448         if (cmd == NULL)
2449                 return -ENOMEM;
2450
2451         cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2452         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2453         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2454         cmd->threshold = cpu_to_le16(rts_thresh);
2455
2456         rc = mwl8k_post_cmd(hw, &cmd->header);
2457         kfree(cmd);
2458
2459         return rc;
2460 }
2461
2462 /*
2463  * CMD_SET_SLOT.
2464  */
2465 struct mwl8k_cmd_set_slot {
2466         struct mwl8k_cmd_pkt header;
2467         __le16 action;
2468         __u8 short_slot;
2469 } __attribute__((packed));
2470
2471 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2472 {
2473         struct mwl8k_cmd_set_slot *cmd;
2474         int rc;
2475
2476         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2477         if (cmd == NULL)
2478                 return -ENOMEM;
2479
2480         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2481         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2482         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2483         cmd->short_slot = short_slot_time;
2484
2485         rc = mwl8k_post_cmd(hw, &cmd->header);
2486         kfree(cmd);
2487
2488         return rc;
2489 }
2490
2491 /*
2492  * CMD_SET_EDCA_PARAMS.
2493  */
2494 struct mwl8k_cmd_set_edca_params {
2495         struct mwl8k_cmd_pkt header;
2496
2497         /* See MWL8K_SET_EDCA_XXX below */
2498         __le16 action;
2499
2500         /* TX opportunity in units of 32 us */
2501         __le16 txop;
2502
2503         union {
2504                 struct {
2505                         /* Log exponent of max contention period: 0...15 */
2506                         __le32 log_cw_max;
2507
2508                         /* Log exponent of min contention period: 0...15 */
2509                         __le32 log_cw_min;
2510
2511                         /* Adaptive interframe spacing in units of 32us */
2512                         __u8 aifs;
2513
2514                         /* TX queue to configure */
2515                         __u8 txq;
2516                 } ap;
2517                 struct {
2518                         /* Log exponent of max contention period: 0...15 */
2519                         __u8 log_cw_max;
2520
2521                         /* Log exponent of min contention period: 0...15 */
2522                         __u8 log_cw_min;
2523
2524                         /* Adaptive interframe spacing in units of 32us */
2525                         __u8 aifs;
2526
2527                         /* TX queue to configure */
2528                         __u8 txq;
2529                 } sta;
2530         };
2531 } __attribute__((packed));
2532
2533 #define MWL8K_SET_EDCA_CW       0x01
2534 #define MWL8K_SET_EDCA_TXOP     0x02
2535 #define MWL8K_SET_EDCA_AIFS     0x04
2536
2537 #define MWL8K_SET_EDCA_ALL      (MWL8K_SET_EDCA_CW | \
2538                                  MWL8K_SET_EDCA_TXOP | \
2539                                  MWL8K_SET_EDCA_AIFS)
2540
2541 static int
2542 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2543                           __u16 cw_min, __u16 cw_max,
2544                           __u8 aifs, __u16 txop)
2545 {
2546         struct mwl8k_priv *priv = hw->priv;
2547         struct mwl8k_cmd_set_edca_params *cmd;
2548         int rc;
2549
2550         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2551         if (cmd == NULL)
2552                 return -ENOMEM;
2553
2554         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2555         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2556         cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2557         cmd->txop = cpu_to_le16(txop);
2558         if (priv->ap_fw) {
2559                 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2560                 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2561                 cmd->ap.aifs = aifs;
2562                 cmd->ap.txq = qnum;
2563         } else {
2564                 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2565                 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2566                 cmd->sta.aifs = aifs;
2567                 cmd->sta.txq = qnum;
2568         }
2569
2570         rc = mwl8k_post_cmd(hw, &cmd->header);
2571         kfree(cmd);
2572
2573         return rc;
2574 }
2575
2576 /*
2577  * CMD_SET_WMM_MODE.
2578  */
2579 struct mwl8k_cmd_set_wmm_mode {
2580         struct mwl8k_cmd_pkt header;
2581         __le16 action;
2582 } __attribute__((packed));
2583
2584 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2585 {
2586         struct mwl8k_priv *priv = hw->priv;
2587         struct mwl8k_cmd_set_wmm_mode *cmd;
2588         int rc;
2589
2590         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2591         if (cmd == NULL)
2592                 return -ENOMEM;
2593
2594         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2595         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2596         cmd->action = cpu_to_le16(!!enable);
2597
2598         rc = mwl8k_post_cmd(hw, &cmd->header);
2599         kfree(cmd);
2600
2601         if (!rc)
2602                 priv->wmm_enabled = enable;
2603
2604         return rc;
2605 }
2606
2607 /*
2608  * CMD_MIMO_CONFIG.
2609  */
2610 struct mwl8k_cmd_mimo_config {
2611         struct mwl8k_cmd_pkt header;
2612         __le32 action;
2613         __u8 rx_antenna_map;
2614         __u8 tx_antenna_map;
2615 } __attribute__((packed));
2616
2617 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2618 {
2619         struct mwl8k_cmd_mimo_config *cmd;
2620         int rc;
2621
2622         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2623         if (cmd == NULL)
2624                 return -ENOMEM;
2625
2626         cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2627         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2628         cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2629         cmd->rx_antenna_map = rx;
2630         cmd->tx_antenna_map = tx;
2631
2632         rc = mwl8k_post_cmd(hw, &cmd->header);
2633         kfree(cmd);
2634
2635         return rc;
2636 }
2637
2638 /*
2639  * CMD_USE_FIXED_RATE (STA version).
2640  */
2641 struct mwl8k_cmd_use_fixed_rate_sta {
2642         struct mwl8k_cmd_pkt header;
2643         __le32 action;
2644         __le32 allow_rate_drop;
2645         __le32 num_rates;
2646         struct {
2647                 __le32 is_ht_rate;
2648                 __le32 enable_retry;
2649                 __le32 rate;
2650                 __le32 retry_count;
2651         } rate_entry[8];
2652         __le32 rate_type;
2653         __le32 reserved1;
2654         __le32 reserved2;
2655 } __attribute__((packed));
2656
2657 #define MWL8K_USE_AUTO_RATE     0x0002
2658 #define MWL8K_UCAST_RATE        0
2659
2660 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2661 {
2662         struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2663         int rc;
2664
2665         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2666         if (cmd == NULL)
2667                 return -ENOMEM;
2668
2669         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2670         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2671         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2672         cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2673
2674         rc = mwl8k_post_cmd(hw, &cmd->header);
2675         kfree(cmd);
2676
2677         return rc;
2678 }
2679
2680 /*
2681  * CMD_USE_FIXED_RATE (AP version).
2682  */
2683 struct mwl8k_cmd_use_fixed_rate_ap {
2684         struct mwl8k_cmd_pkt header;
2685         __le32 action;
2686         __le32 allow_rate_drop;
2687         __le32 num_rates;
2688         struct mwl8k_rate_entry_ap {
2689                 __le32 is_ht_rate;
2690                 __le32 enable_retry;
2691                 __le32 rate;
2692                 __le32 retry_count;
2693         } rate_entry[4];
2694         u8 multicast_rate;
2695         u8 multicast_rate_type;
2696         u8 management_rate;
2697 } __attribute__((packed));
2698
2699 static int
2700 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2701 {
2702         struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2703         int rc;
2704
2705         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2706         if (cmd == NULL)
2707                 return -ENOMEM;
2708
2709         cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2710         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2711         cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2712         cmd->multicast_rate = mcast;
2713         cmd->management_rate = mgmt;
2714
2715         rc = mwl8k_post_cmd(hw, &cmd->header);
2716         kfree(cmd);
2717
2718         return rc;
2719 }
2720
2721 /*
2722  * CMD_ENABLE_SNIFFER.
2723  */
2724 struct mwl8k_cmd_enable_sniffer {
2725         struct mwl8k_cmd_pkt header;
2726         __le32 action;
2727 } __attribute__((packed));
2728
2729 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2730 {
2731         struct mwl8k_cmd_enable_sniffer *cmd;
2732         int rc;
2733
2734         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2735         if (cmd == NULL)
2736                 return -ENOMEM;
2737
2738         cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2739         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2740         cmd->action = cpu_to_le32(!!enable);
2741
2742         rc = mwl8k_post_cmd(hw, &cmd->header);
2743         kfree(cmd);
2744
2745         return rc;
2746 }
2747
2748 /*
2749  * CMD_SET_MAC_ADDR.
2750  */
2751 struct mwl8k_cmd_set_mac_addr {
2752         struct mwl8k_cmd_pkt header;
2753         union {
2754                 struct {
2755                         __le16 mac_type;
2756                         __u8 mac_addr[ETH_ALEN];
2757                 } mbss;
2758                 __u8 mac_addr[ETH_ALEN];
2759         };
2760 } __attribute__((packed));
2761
2762 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT           0
2763 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT         1
2764 #define MWL8K_MAC_TYPE_PRIMARY_AP               2
2765 #define MWL8K_MAC_TYPE_SECONDARY_AP             3
2766
2767 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
2768                                   struct ieee80211_vif *vif, u8 *mac)
2769 {
2770         struct mwl8k_priv *priv = hw->priv;
2771         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2772         struct mwl8k_cmd_set_mac_addr *cmd;
2773         int mac_type;
2774         int rc;
2775
2776         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2777         if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
2778                 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
2779                         mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
2780                 else
2781                         mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
2782         } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
2783                 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
2784                         mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
2785                 else
2786                         mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
2787         }
2788
2789         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2790         if (cmd == NULL)
2791                 return -ENOMEM;
2792
2793         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2794         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2795         if (priv->ap_fw) {
2796                 cmd->mbss.mac_type = cpu_to_le16(mac_type);
2797                 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2798         } else {
2799                 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2800         }
2801
2802         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2803         kfree(cmd);
2804
2805         return rc;
2806 }
2807
2808 /*
2809  * CMD_SET_RATEADAPT_MODE.
2810  */
2811 struct mwl8k_cmd_set_rate_adapt_mode {
2812         struct mwl8k_cmd_pkt header;
2813         __le16 action;
2814         __le16 mode;
2815 } __attribute__((packed));
2816
2817 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2818 {
2819         struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2820         int rc;
2821
2822         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2823         if (cmd == NULL)
2824                 return -ENOMEM;
2825
2826         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2827         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2828         cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2829         cmd->mode = cpu_to_le16(mode);
2830
2831         rc = mwl8k_post_cmd(hw, &cmd->header);
2832         kfree(cmd);
2833
2834         return rc;
2835 }
2836
2837 /*
2838  * CMD_BSS_START.
2839  */
2840 struct mwl8k_cmd_bss_start {
2841         struct mwl8k_cmd_pkt header;
2842         __le32 enable;
2843 } __attribute__((packed));
2844
2845 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
2846                                struct ieee80211_vif *vif, int enable)
2847 {
2848         struct mwl8k_cmd_bss_start *cmd;
2849         int rc;
2850
2851         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2852         if (cmd == NULL)
2853                 return -ENOMEM;
2854
2855         cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
2856         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2857         cmd->enable = cpu_to_le32(enable);
2858
2859         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2860         kfree(cmd);
2861
2862         return rc;
2863 }
2864
2865 /*
2866  * CMD_SET_NEW_STN.
2867  */
2868 struct mwl8k_cmd_set_new_stn {
2869         struct mwl8k_cmd_pkt header;
2870         __le16 aid;
2871         __u8 mac_addr[6];
2872         __le16 stn_id;
2873         __le16 action;
2874         __le16 rsvd;
2875         __le32 legacy_rates;
2876         __u8 ht_rates[4];
2877         __le16 cap_info;
2878         __le16 ht_capabilities_info;
2879         __u8 mac_ht_param_info;
2880         __u8 rev;
2881         __u8 control_channel;
2882         __u8 add_channel;
2883         __le16 op_mode;
2884         __le16 stbc;
2885         __u8 add_qos_info;
2886         __u8 is_qos_sta;
2887         __le32 fw_sta_ptr;
2888 } __attribute__((packed));
2889
2890 #define MWL8K_STA_ACTION_ADD            0
2891 #define MWL8K_STA_ACTION_REMOVE         2
2892
2893 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
2894                                      struct ieee80211_vif *vif,
2895                                      struct ieee80211_sta *sta)
2896 {
2897         struct mwl8k_cmd_set_new_stn *cmd;
2898         u32 rates;
2899         int rc;
2900
2901         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2902         if (cmd == NULL)
2903                 return -ENOMEM;
2904
2905         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2906         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2907         cmd->aid = cpu_to_le16(sta->aid);
2908         memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
2909         cmd->stn_id = cpu_to_le16(sta->aid);
2910         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
2911         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
2912                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
2913         else
2914                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
2915         cmd->legacy_rates = cpu_to_le32(rates);
2916         if (sta->ht_cap.ht_supported) {
2917                 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
2918                 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
2919                 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
2920                 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
2921                 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
2922                 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
2923                         ((sta->ht_cap.ampdu_density & 7) << 2);
2924                 cmd->is_qos_sta = 1;
2925         }
2926
2927         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2928         kfree(cmd);
2929
2930         return rc;
2931 }
2932
2933 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
2934                                           struct ieee80211_vif *vif)
2935 {
2936         struct mwl8k_cmd_set_new_stn *cmd;
2937         int rc;
2938
2939         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2940         if (cmd == NULL)
2941                 return -ENOMEM;
2942
2943         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2944         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2945         memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
2946
2947         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2948         kfree(cmd);
2949
2950         return rc;
2951 }
2952
2953 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
2954                                      struct ieee80211_vif *vif, u8 *addr)
2955 {
2956         struct mwl8k_cmd_set_new_stn *cmd;
2957         int rc;
2958
2959         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2960         if (cmd == NULL)
2961                 return -ENOMEM;
2962
2963         cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
2964         cmd->header.length = cpu_to_le16(sizeof(*cmd));
2965         memcpy(cmd->mac_addr, addr, ETH_ALEN);
2966         cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
2967
2968         rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2969         kfree(cmd);
2970
2971         return rc;
2972 }
2973
2974 /*
2975  * CMD_UPDATE_STADB.
2976  */
2977 struct ewc_ht_info {
2978         __le16  control1;
2979         __le16  control2;
2980         __le16  control3;
2981 } __attribute__((packed));
2982
2983 struct peer_capability_info {
2984         /* Peer type - AP vs. STA.  */
2985         __u8    peer_type;
2986
2987         /* Basic 802.11 capabilities from assoc resp.  */
2988         __le16  basic_caps;
2989
2990         /* Set if peer supports 802.11n high throughput (HT).  */
2991         __u8    ht_support;
2992
2993         /* Valid if HT is supported.  */
2994         __le16  ht_caps;
2995         __u8    extended_ht_caps;
2996         struct ewc_ht_info      ewc_info;
2997
2998         /* Legacy rate table. Intersection of our rates and peer rates.  */
2999         __u8    legacy_rates[12];
3000
3001         /* HT rate table. Intersection of our rates and peer rates.  */
3002         __u8    ht_rates[16];
3003         __u8    pad[16];
3004
3005         /* If set, interoperability mode, no proprietary extensions.  */
3006         __u8    interop;
3007         __u8    pad2;
3008         __u8    station_id;
3009         __le16  amsdu_enabled;
3010 } __attribute__((packed));
3011
3012 struct mwl8k_cmd_update_stadb {
3013         struct mwl8k_cmd_pkt header;
3014
3015         /* See STADB_ACTION_TYPE */
3016         __le32  action;
3017
3018         /* Peer MAC address */
3019         __u8    peer_addr[ETH_ALEN];
3020
3021         __le32  reserved;
3022
3023         /* Peer info - valid during add/update.  */
3024         struct peer_capability_info     peer_info;
3025 } __attribute__((packed));
3026
3027 #define MWL8K_STA_DB_MODIFY_ENTRY       1
3028 #define MWL8K_STA_DB_DEL_ENTRY          2
3029
3030 /* Peer Entry flags - used to define the type of the peer node */
3031 #define MWL8K_PEER_TYPE_ACCESSPOINT     2
3032
3033 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3034                                       struct ieee80211_vif *vif,
3035                                       struct ieee80211_sta *sta)
3036 {
3037         struct mwl8k_cmd_update_stadb *cmd;
3038         struct peer_capability_info *p;
3039         u32 rates;
3040         int rc;
3041
3042         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3043         if (cmd == NULL)
3044                 return -ENOMEM;
3045
3046         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3047         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3048         cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3049         memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3050
3051         p = &cmd->peer_info;
3052         p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3053         p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3054         p->ht_support = sta->ht_cap.ht_supported;
3055         p->ht_caps = sta->ht_cap.cap;
3056         p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3057                 ((sta->ht_cap.ampdu_density & 7) << 2);
3058         if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3059                 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3060         else
3061                 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3062         legacy_rate_mask_to_array(p->legacy_rates, rates);
3063         memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3064         p->interop = 1;
3065         p->amsdu_enabled = 0;
3066
3067         rc = mwl8k_post_cmd(hw, &cmd->header);
3068         kfree(cmd);
3069
3070         return rc ? rc : p->station_id;
3071 }
3072
3073 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3074                                       struct ieee80211_vif *vif, u8 *addr)
3075 {
3076         struct mwl8k_cmd_update_stadb *cmd;
3077         int rc;
3078
3079         cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3080         if (cmd == NULL)
3081                 return -ENOMEM;
3082
3083         cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3084         cmd->header.length = cpu_to_le16(sizeof(*cmd));
3085         cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3086         memcpy(cmd->peer_addr, addr, ETH_ALEN);
3087
3088         rc = mwl8k_post_cmd(hw, &cmd->header);
3089         kfree(cmd);
3090
3091         return rc;
3092 }
3093
3094
3095 /*
3096  * Interrupt handling.
3097  */
3098 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3099 {
3100         struct ieee80211_hw *hw = dev_id;
3101         struct mwl8k_priv *priv = hw->priv;
3102         u32 status;
3103
3104         status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3105         if (!status)
3106                 return IRQ_NONE;
3107
3108         if (status & MWL8K_A2H_INT_TX_DONE) {
3109                 status &= ~MWL8K_A2H_INT_TX_DONE;
3110                 tasklet_schedule(&priv->poll_tx_task);
3111         }
3112
3113         if (status & MWL8K_A2H_INT_RX_READY) {
3114                 status &= ~MWL8K_A2H_INT_RX_READY;
3115                 tasklet_schedule(&priv->poll_rx_task);
3116         }
3117
3118         if (status)
3119                 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3120
3121         if (status & MWL8K_A2H_INT_OPC_DONE) {
3122                 if (priv->hostcmd_wait != NULL)
3123                         complete(priv->hostcmd_wait);
3124         }
3125
3126         if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3127                 if (!mutex_is_locked(&priv->fw_mutex) &&
3128                     priv->radio_on && priv->pending_tx_pkts)
3129                         mwl8k_tx_start(priv);
3130         }
3131
3132         return IRQ_HANDLED;
3133 }
3134
3135 static void mwl8k_tx_poll(unsigned long data)
3136 {
3137         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3138         struct mwl8k_priv *priv = hw->priv;
3139         int limit;
3140         int i;
3141
3142         limit = 32;
3143
3144         spin_lock_bh(&priv->tx_lock);
3145
3146         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3147                 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3148
3149         if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3150                 complete(priv->tx_wait);
3151                 priv->tx_wait = NULL;
3152         }
3153
3154         spin_unlock_bh(&priv->tx_lock);
3155
3156         if (limit) {
3157                 writel(~MWL8K_A2H_INT_TX_DONE,
3158                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3159         } else {
3160                 tasklet_schedule(&priv->poll_tx_task);
3161         }
3162 }
3163
3164 static void mwl8k_rx_poll(unsigned long data)
3165 {
3166         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3167         struct mwl8k_priv *priv = hw->priv;
3168         int limit;
3169
3170         limit = 32;
3171         limit -= rxq_process(hw, 0, limit);
3172         limit -= rxq_refill(hw, 0, limit);
3173
3174         if (limit) {
3175                 writel(~MWL8K_A2H_INT_RX_READY,
3176                        priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3177         } else {
3178                 tasklet_schedule(&priv->poll_rx_task);
3179         }
3180 }
3181
3182
3183 /*
3184  * Core driver operations.
3185  */
3186 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3187 {
3188         struct mwl8k_priv *priv = hw->priv;
3189         int index = skb_get_queue_mapping(skb);
3190         int rc;
3191
3192         if (!priv->radio_on) {
3193                 printk(KERN_DEBUG "%s: dropped TX frame since radio "
3194                        "disabled\n", wiphy_name(hw->wiphy));
3195                 dev_kfree_skb(skb);
3196                 return NETDEV_TX_OK;
3197         }
3198
3199         rc = mwl8k_txq_xmit(hw, index, skb);
3200
3201         return rc;
3202 }
3203
3204 static int mwl8k_start(struct ieee80211_hw *hw)
3205 {
3206         struct mwl8k_priv *priv = hw->priv;
3207         int rc;
3208
3209         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3210                          IRQF_SHARED, MWL8K_NAME, hw);
3211         if (rc) {
3212                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
3213                        wiphy_name(hw->wiphy));
3214                 return -EIO;
3215         }
3216
3217         /* Enable TX reclaim and RX tasklets.  */
3218         tasklet_enable(&priv->poll_tx_task);
3219         tasklet_enable(&priv->poll_rx_task);
3220
3221         /* Enable interrupts */
3222         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3223
3224         rc = mwl8k_fw_lock(hw);
3225         if (!rc) {
3226                 rc = mwl8k_cmd_radio_enable(hw);
3227
3228                 if (!priv->ap_fw) {
3229                         if (!rc)
3230                                 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3231
3232                         if (!rc)
3233                                 rc = mwl8k_cmd_set_pre_scan(hw);
3234
3235                         if (!rc)
3236                                 rc = mwl8k_cmd_set_post_scan(hw,
3237                                                 "\x00\x00\x00\x00\x00\x00");
3238                 }
3239
3240                 if (!rc)
3241                         rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3242
3243                 if (!rc)
3244                         rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3245
3246                 mwl8k_fw_unlock(hw);
3247         }
3248
3249         if (rc) {
3250                 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3251                 free_irq(priv->pdev->irq, hw);
3252                 tasklet_disable(&priv->poll_tx_task);
3253                 tasklet_disable(&priv->poll_rx_task);
3254         }
3255
3256         return rc;
3257 }
3258
3259 static void mwl8k_stop(struct ieee80211_hw *hw)
3260 {
3261         struct mwl8k_priv *priv = hw->priv;
3262         int i;
3263
3264         mwl8k_cmd_radio_disable(hw);
3265
3266         ieee80211_stop_queues(hw);
3267
3268         /* Disable interrupts */
3269         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3270         free_irq(priv->pdev->irq, hw);
3271
3272         /* Stop finalize join worker */
3273         cancel_work_sync(&priv->finalize_join_worker);
3274         if (priv->beacon_skb != NULL)
3275                 dev_kfree_skb(priv->beacon_skb);
3276
3277         /* Stop TX reclaim and RX tasklets.  */
3278         tasklet_disable(&priv->poll_tx_task);
3279         tasklet_disable(&priv->poll_rx_task);
3280
3281         /* Return all skbs to mac80211 */
3282         for (i = 0; i < MWL8K_TX_QUEUES; i++)
3283                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3284 }
3285
3286 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3287                                struct ieee80211_vif *vif)
3288 {
3289         struct mwl8k_priv *priv = hw->priv;
3290         struct mwl8k_vif *mwl8k_vif;
3291         u32 macids_supported;
3292         int macid;
3293
3294         /*
3295          * Reject interface creation if sniffer mode is active, as
3296          * STA operation is mutually exclusive with hardware sniffer
3297          * mode.  (Sniffer mode is only used on STA firmware.)
3298          */
3299         if (priv->sniffer_enabled) {
3300                 printk(KERN_INFO "%s: unable to create STA "
3301                        "interface due to sniffer mode being enabled\n",
3302                        wiphy_name(hw->wiphy));
3303                 return -EINVAL;
3304         }
3305
3306
3307         switch (vif->type) {
3308         case NL80211_IFTYPE_AP:
3309                 macids_supported = priv->ap_macids_supported;
3310                 break;
3311         case NL80211_IFTYPE_STATION:
3312                 macids_supported = priv->sta_macids_supported;
3313                 break;
3314         default:
3315                 return -EINVAL;
3316         }
3317
3318         macid = ffs(macids_supported & ~priv->macids_used);
3319         if (!macid--)
3320                 return -EBUSY;
3321
3322         /* Setup driver private area. */
3323         mwl8k_vif = MWL8K_VIF(vif);
3324         memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3325         mwl8k_vif->vif = vif;
3326         mwl8k_vif->macid = macid;
3327         mwl8k_vif->seqno = 0;
3328
3329         /* Set the mac address.  */
3330         mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3331
3332         if (priv->ap_fw)
3333                 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3334
3335         priv->macids_used |= 1 << mwl8k_vif->macid;
3336         list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3337
3338         return 0;
3339 }
3340
3341 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3342                                    struct ieee80211_vif *vif)
3343 {
3344         struct mwl8k_priv *priv = hw->priv;
3345         struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3346
3347         if (priv->ap_fw)
3348                 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3349
3350         mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3351
3352         priv->macids_used &= ~(1 << mwl8k_vif->macid);
3353         list_del(&mwl8k_vif->list);
3354 }
3355
3356 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3357 {
3358         struct ieee80211_conf *conf = &hw->conf;
3359         struct mwl8k_priv *priv = hw->priv;
3360         int rc;
3361
3362         if (conf->flags & IEEE80211_CONF_IDLE) {
3363                 mwl8k_cmd_radio_disable(hw);
3364                 return 0;
3365         }
3366
3367         rc = mwl8k_fw_lock(hw);
3368         if (rc)
3369                 return rc;
3370
3371         rc = mwl8k_cmd_radio_enable(hw);
3372         if (rc)
3373                 goto out;
3374
3375         rc = mwl8k_cmd_set_rf_channel(hw, conf);
3376         if (rc)
3377                 goto out;
3378
3379         if (conf->power_level > 18)
3380                 conf->power_level = 18;
3381         rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3382         if (rc)
3383                 goto out;
3384
3385         if (priv->ap_fw) {
3386                 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
3387                 if (!rc)
3388                         rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3389         } else {
3390                 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3391         }
3392
3393 out:
3394         mwl8k_fw_unlock(hw);
3395
3396         return rc;
3397 }
3398
3399 static void
3400 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3401                            struct ieee80211_bss_conf *info, u32 changed)
3402 {
3403         struct mwl8k_priv *priv = hw->priv;
3404         u32 ap_legacy_rates;
3405         u8 ap_mcs_rates[16];
3406         int rc;
3407
3408         if (mwl8k_fw_lock(hw))
3409                 return;
3410
3411         /*
3412          * No need to capture a beacon if we're no longer associated.
3413          */
3414         if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3415                 priv->capture_beacon = false;
3416
3417         /*
3418          * Get the AP's legacy and MCS rates.
3419          */
3420         if (vif->bss_conf.assoc) {
3421                 struct ieee80211_sta *ap;
3422
3423                 rcu_read_lock();
3424
3425                 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
3426                 if (ap == NULL) {
3427                         rcu_read_unlock();
3428                         goto out;
3429                 }
3430
3431                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
3432                         ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
3433                 } else {
3434                         ap_legacy_rates =
3435                                 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3436                 }
3437                 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
3438
3439                 rcu_read_unlock();
3440         }
3441
3442         if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
3443                 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
3444                 if (rc)
3445                         goto out;
3446
3447                 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
3448                 if (rc)
3449                         goto out;
3450         }
3451
3452         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3453                 rc = mwl8k_set_radio_preamble(hw,
3454                                 vif->bss_conf.use_short_preamble);
3455                 if (rc)
3456                         goto out;
3457         }
3458
3459         if (changed & BSS_CHANGED_ERP_SLOT) {
3460                 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
3461                 if (rc)
3462                         goto out;
3463         }
3464
3465         if (vif->bss_conf.assoc &&
3466             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
3467                         BSS_CHANGED_HT))) {
3468                 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
3469                 if (rc)
3470                         goto out;
3471         }
3472
3473         if (vif->bss_conf.assoc &&
3474             (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
3475                 /*
3476                  * Finalize the join.  Tell rx handler to process
3477                  * next beacon from our BSSID.
3478                  */
3479                 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
3480                 priv->capture_beacon = true;
3481         }
3482
3483 out:
3484         mwl8k_fw_unlock(hw);
3485 }
3486
3487 static void
3488 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3489                           struct ieee80211_bss_conf *info, u32 changed)
3490 {
3491         int rc;
3492
3493         if (mwl8k_fw_lock(hw))
3494                 return;
3495
3496         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3497                 rc = mwl8k_set_radio_preamble(hw,
3498                                 vif->bss_conf.use_short_preamble);
3499                 if (rc)
3500                         goto out;
3501         }
3502
3503         if (changed & BSS_CHANGED_BASIC_RATES) {
3504                 int idx;
3505                 int rate;
3506
3507                 /*
3508                  * Use lowest supported basic rate for multicasts
3509                  * and management frames (such as probe responses --
3510                  * beacons will always go out at 1 Mb/s).
3511                  */
3512                 idx = ffs(vif->bss_conf.basic_rates);
3513                 if (idx)
3514                         idx--;
3515
3516                 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3517                         rate = mwl8k_rates_24[idx].hw_value;
3518                 else
3519                         rate = mwl8k_rates_50[idx].hw_value;
3520
3521                 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
3522         }
3523
3524         if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
3525                 struct sk_buff *skb;
3526
3527                 skb = ieee80211_beacon_get(hw, vif);
3528                 if (skb != NULL) {
3529                         mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
3530                         kfree_skb(skb);
3531                 }
3532         }
3533
3534         if (changed & BSS_CHANGED_BEACON_ENABLED)
3535                 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
3536
3537 out:
3538         mwl8k_fw_unlock(hw);
3539 }
3540
3541 static void
3542 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3543                        struct ieee80211_bss_conf *info, u32 changed)
3544 {
3545         struct mwl8k_priv *priv = hw->priv;
3546
3547         if (!priv->ap_fw)
3548                 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
3549         else
3550                 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
3551 }
3552
3553 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3554                                    struct netdev_hw_addr_list *mc_list)
3555 {
3556         struct mwl8k_cmd_pkt *cmd;
3557
3558         /*
3559          * Synthesize and return a command packet that programs the
3560          * hardware multicast address filter.  At this point we don't
3561          * know whether FIF_ALLMULTI is being requested, but if it is,
3562          * we'll end up throwing this packet away and creating a new
3563          * one in mwl8k_configure_filter().
3564          */
3565         cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
3566
3567         return (unsigned long)cmd;
3568 }
3569
3570 static int
3571 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3572                                unsigned int changed_flags,
3573                                unsigned int *total_flags)
3574 {
3575         struct mwl8k_priv *priv = hw->priv;
3576
3577         /*
3578          * Hardware sniffer mode is mutually exclusive with STA
3579          * operation, so refuse to enable sniffer mode if a STA
3580          * interface is active.
3581          */
3582         if (!list_empty(&priv->vif_list)) {
3583                 if (net_ratelimit())
3584                         printk(KERN_INFO "%s: not enabling sniffer "
3585                                "mode because STA interface is active\n",
3586                                wiphy_name(hw->wiphy));
3587                 return 0;
3588         }
3589
3590         if (!priv->sniffer_enabled) {
3591                 if (mwl8k_cmd_enable_sniffer(hw, 1))
3592                         return 0;
3593                 priv->sniffer_enabled = true;
3594         }
3595
3596         *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3597                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3598                         FIF_OTHER_BSS;
3599
3600         return 1;
3601 }
3602
3603 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
3604 {
3605         if (!list_empty(&priv->vif_list))
3606                 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
3607
3608         return NULL;
3609 }
3610
3611 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3612                                    unsigned int changed_flags,
3613                                    unsigned int *total_flags,
3614                                    u64 multicast)
3615 {
3616         struct mwl8k_priv *priv = hw->priv;
3617         struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3618
3619         /*
3620          * AP firmware doesn't allow fine-grained control over
3621          * the receive filter.
3622          */
3623         if (priv->ap_fw) {
3624                 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3625                 kfree(cmd);
3626                 return;
3627         }
3628
3629         /*
3630          * Enable hardware sniffer mode if FIF_CONTROL or
3631          * FIF_OTHER_BSS is requested.
3632          */
3633         if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3634             mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3635                 kfree(cmd);
3636                 return;
3637         }
3638
3639         /* Clear unsupported feature flags */
3640         *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3641
3642         if (mwl8k_fw_lock(hw)) {
3643                 kfree(cmd);
3644                 return;
3645         }
3646
3647         if (priv->sniffer_enabled) {
3648                 mwl8k_cmd_enable_sniffer(hw, 0);
3649                 priv->sniffer_enabled = false;
3650         }
3651
3652         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3653                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3654                         /*
3655                          * Disable the BSS filter.
3656                          */
3657                         mwl8k_cmd_set_pre_scan(hw);
3658                 } else {
3659                         struct mwl8k_vif *mwl8k_vif;
3660                         const u8 *bssid;
3661
3662                         /*
3663                          * Enable the BSS filter.
3664                          *
3665                          * If there is an active STA interface, use that
3666                          * interface's BSSID, otherwise use a dummy one
3667                          * (where the OUI part needs to be nonzero for
3668                          * the BSSID to be accepted by POST_SCAN).
3669                          */
3670                         mwl8k_vif = mwl8k_first_vif(priv);
3671                         if (mwl8k_vif != NULL)
3672                                 bssid = mwl8k_vif->vif->bss_conf.bssid;
3673                         else
3674                                 bssid = "\x01\x00\x00\x00\x00\x00";
3675
3676                         mwl8k_cmd_set_post_scan(hw, bssid);
3677                 }
3678         }
3679
3680         /*
3681          * If FIF_ALLMULTI is being requested, throw away the command
3682          * packet that ->prepare_multicast() built and replace it with
3683          * a command packet that enables reception of all multicast
3684          * packets.
3685          */
3686         if (*total_flags & FIF_ALLMULTI) {
3687                 kfree(cmd);
3688                 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
3689         }
3690
3691         if (cmd != NULL) {
3692                 mwl8k_post_cmd(hw, cmd);
3693                 kfree(cmd);
3694         }
3695
3696         mwl8k_fw_unlock(hw);
3697 }
3698
3699 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3700 {
3701         return mwl8k_cmd_set_rts_threshold(hw, value);
3702 }
3703
3704 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
3705                             struct ieee80211_vif *vif,
3706                             struct ieee80211_sta *sta)
3707 {
3708         struct mwl8k_priv *priv = hw->priv;
3709
3710         if (priv->ap_fw)
3711                 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
3712         else
3713                 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
3714 }
3715
3716 static int mwl8k_sta_add(struct ieee80211_hw *hw,
3717                          struct ieee80211_vif *vif,
3718                          struct ieee80211_sta *sta)
3719 {
3720         struct mwl8k_priv *priv = hw->priv;
3721         int ret;
3722
3723         if (!priv->ap_fw) {
3724                 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
3725                 if (ret >= 0) {
3726                         MWL8K_STA(sta)->peer_id = ret;
3727                         return 0;
3728                 }
3729
3730                 return ret;
3731         }
3732
3733         return mwl8k_cmd_set_new_stn_add(hw, vif, sta);
3734 }
3735
3736 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3737                          const struct ieee80211_tx_queue_params *params)
3738 {
3739         struct mwl8k_priv *priv = hw->priv;
3740         int rc;
3741
3742         rc = mwl8k_fw_lock(hw);
3743         if (!rc) {
3744                 if (!priv->wmm_enabled)
3745                         rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3746
3747                 if (!rc)
3748                         rc = mwl8k_cmd_set_edca_params(hw, queue,
3749                                                        params->cw_min,
3750                                                        params->cw_max,
3751                                                        params->aifs,
3752                                                        params->txop);
3753
3754                 mwl8k_fw_unlock(hw);
3755         }
3756
3757         return rc;
3758 }
3759
3760 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3761                            struct ieee80211_low_level_stats *stats)
3762 {
3763         return mwl8k_cmd_get_stat(hw, stats);
3764 }
3765
3766 static int
3767 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3768                    enum ieee80211_ampdu_mlme_action action,
3769                    struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3770 {
3771         switch (action) {
3772         case IEEE80211_AMPDU_RX_START:
3773         case IEEE80211_AMPDU_RX_STOP:
3774                 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
3775                         return -ENOTSUPP;
3776                 return 0;
3777         default:
3778                 return -ENOTSUPP;
3779         }
3780 }
3781
3782 static const struct ieee80211_ops mwl8k_ops = {
3783         .tx                     = mwl8k_tx,
3784         .start                  = mwl8k_start,
3785         .stop                   = mwl8k_stop,
3786         .add_interface          = mwl8k_add_interface,
3787         .remove_interface       = mwl8k_remove_interface,
3788         .config                 = mwl8k_config,
3789         .bss_info_changed       = mwl8k_bss_info_changed,
3790         .prepare_multicast      = mwl8k_prepare_multicast,
3791         .configure_filter       = mwl8k_configure_filter,
3792         .set_rts_threshold      = mwl8k_set_rts_threshold,
3793         .sta_add                = mwl8k_sta_add,
3794         .sta_remove             = mwl8k_sta_remove,
3795         .conf_tx                = mwl8k_conf_tx,
3796         .get_stats              = mwl8k_get_stats,
3797         .ampdu_action           = mwl8k_ampdu_action,
3798 };
3799
3800 static void mwl8k_finalize_join_worker(struct work_struct *work)
3801 {
3802         struct mwl8k_priv *priv =
3803                 container_of(work, struct mwl8k_priv, finalize_join_worker);
3804         struct sk_buff *skb = priv->beacon_skb;
3805         struct ieee80211_mgmt *mgmt = (void *)skb->data;
3806         int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
3807         const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
3808                                          mgmt->u.beacon.variable, len);
3809         int dtim_period = 1;
3810
3811         if (tim && tim[1] >= 2)
3812                 dtim_period = tim[3];
3813
3814         mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
3815
3816         dev_kfree_skb(skb);
3817         priv->beacon_skb = NULL;
3818 }
3819
3820 enum {
3821         MWL8363 = 0,
3822         MWL8687,
3823         MWL8366,
3824 };
3825
3826 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3827         [MWL8363] = {
3828                 .part_name      = "88w8363",
3829                 .helper_image   = "mwl8k/helper_8363.fw",
3830                 .fw_image       = "mwl8k/fmimage_8363.fw",
3831         },
3832         [MWL8687] = {
3833                 .part_name      = "88w8687",
3834                 .helper_image   = "mwl8k/helper_8687.fw",
3835                 .fw_image       = "mwl8k/fmimage_8687.fw",
3836         },
3837         [MWL8366] = {
3838                 .part_name      = "88w8366",
3839                 .helper_image   = "mwl8k/helper_8366.fw",
3840                 .fw_image       = "mwl8k/fmimage_8366.fw",
3841                 .ap_rxd_ops     = &rxd_8366_ap_ops,
3842         },
3843 };
3844
3845 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
3846 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
3847 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
3848 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
3849 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
3850 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
3851
3852 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3853         { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
3854         { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
3855         { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
3856         { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
3857         { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
3858         { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
3859         { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
3860         { },
3861 };
3862 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
3863
3864 static int __devinit mwl8k_probe(struct pci_dev *pdev,
3865                                  const struct pci_device_id *id)
3866 {
3867         static int printed_version = 0;
3868         struct ieee80211_hw *hw;
3869         struct mwl8k_priv *priv;
3870         int rc;
3871         int i;
3872
3873         if (!printed_version) {
3874                 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
3875                 printed_version = 1;
3876         }
3877
3878
3879         rc = pci_enable_device(pdev);
3880         if (rc) {
3881                 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
3882                        MWL8K_NAME);
3883                 return rc;
3884         }
3885
3886         rc = pci_request_regions(pdev, MWL8K_NAME);
3887         if (rc) {
3888                 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
3889                        MWL8K_NAME);
3890                 goto err_disable_device;
3891         }
3892
3893         pci_set_master(pdev);
3894
3895
3896         hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
3897         if (hw == NULL) {
3898                 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
3899                 rc = -ENOMEM;
3900                 goto err_free_reg;
3901         }
3902
3903         SET_IEEE80211_DEV(hw, &pdev->dev);
3904         pci_set_drvdata(pdev, hw);
3905
3906         priv = hw->priv;
3907         priv->hw = hw;
3908         priv->pdev = pdev;
3909         priv->device_info = &mwl8k_info_tbl[id->driver_data];
3910
3911
3912         priv->sram = pci_iomap(pdev, 0, 0x10000);
3913         if (priv->sram == NULL) {
3914                 printk(KERN_ERR "%s: Cannot map device SRAM\n",
3915                        wiphy_name(hw->wiphy));
3916                 goto err_iounmap;
3917         }
3918
3919         /*
3920          * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
3921          * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
3922          */
3923         priv->regs = pci_iomap(pdev, 1, 0x10000);
3924         if (priv->regs == NULL) {
3925                 priv->regs = pci_iomap(pdev, 2, 0x10000);
3926                 if (priv->regs == NULL) {
3927                         printk(KERN_ERR "%s: Cannot map device registers\n",
3928                                wiphy_name(hw->wiphy));
3929                         goto err_iounmap;
3930                 }
3931         }
3932
3933
3934         /* Reset firmware and hardware */
3935         mwl8k_hw_reset(priv);
3936
3937         /* Ask userland hotplug daemon for the device firmware */
3938         rc = mwl8k_request_firmware(priv);
3939         if (rc) {
3940                 printk(KERN_ERR "%s: Firmware files not found\n",
3941                        wiphy_name(hw->wiphy));
3942                 goto err_stop_firmware;
3943         }
3944
3945         /* Load firmware into hardware */
3946         rc = mwl8k_load_firmware(hw);
3947         if (rc) {
3948                 printk(KERN_ERR "%s: Cannot start firmware\n",
3949                        wiphy_name(hw->wiphy));
3950                 goto err_stop_firmware;
3951         }
3952
3953         /* Reclaim memory once firmware is successfully loaded */
3954         mwl8k_release_firmware(priv);
3955
3956
3957         if (priv->ap_fw) {
3958                 priv->rxd_ops = priv->device_info->ap_rxd_ops;
3959                 if (priv->rxd_ops == NULL) {
3960                         printk(KERN_ERR "%s: Driver does not have AP "
3961                                "firmware image support for this hardware\n",
3962                                wiphy_name(hw->wiphy));
3963                         goto err_stop_firmware;
3964                 }
3965         } else {
3966                 priv->rxd_ops = &rxd_sta_ops;
3967         }
3968
3969         priv->sniffer_enabled = false;
3970         priv->wmm_enabled = false;
3971         priv->pending_tx_pkts = 0;
3972
3973
3974         /*
3975          * Extra headroom is the size of the required DMA header
3976          * minus the size of the smallest 802.11 frame (CTS frame).
3977          */
3978         hw->extra_tx_headroom =
3979                 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
3980
3981         hw->channel_change_time = 10;
3982
3983         hw->queues = MWL8K_TX_QUEUES;
3984
3985         /* Set rssi values to dBm */
3986         hw->flags |= IEEE80211_HW_SIGNAL_DBM;
3987         hw->vif_data_size = sizeof(struct mwl8k_vif);
3988         hw->sta_data_size = sizeof(struct mwl8k_sta);
3989
3990         priv->macids_used = 0;
3991         INIT_LIST_HEAD(&priv->vif_list);
3992
3993         /* Set default radio state and preamble */
3994         priv->radio_on = 0;
3995         priv->radio_short_preamble = 0;
3996
3997         /* Finalize join worker */
3998         INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
3999
4000         /* TX reclaim and RX tasklets.  */
4001         tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4002         tasklet_disable(&priv->poll_tx_task);
4003         tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4004         tasklet_disable(&priv->poll_rx_task);
4005
4006         /* Power management cookie */
4007         priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4008         if (priv->cookie == NULL)
4009                 goto err_stop_firmware;
4010
4011         rc = mwl8k_rxq_init(hw, 0);
4012         if (rc)
4013                 goto err_free_cookie;
4014         rxq_refill(hw, 0, INT_MAX);
4015
4016         mutex_init(&priv->fw_mutex);
4017         priv->fw_mutex_owner = NULL;
4018         priv->fw_mutex_depth = 0;
4019         priv->hostcmd_wait = NULL;
4020
4021         spin_lock_init(&priv->tx_lock);
4022
4023         priv->tx_wait = NULL;
4024
4025         for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4026                 rc = mwl8k_txq_init(hw, i);
4027                 if (rc)
4028                         goto err_free_queues;
4029         }
4030
4031         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4032         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4033         iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4034                   priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4035         iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4036
4037         rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4038                          IRQF_SHARED, MWL8K_NAME, hw);
4039         if (rc) {
4040                 printk(KERN_ERR "%s: failed to register IRQ handler\n",
4041                        wiphy_name(hw->wiphy));
4042                 goto err_free_queues;
4043         }
4044
4045         /*
4046          * Temporarily enable interrupts.  Initial firmware host
4047          * commands use interrupts and avoid polling.  Disable
4048          * interrupts when done.
4049          */
4050         iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4051
4052         /* Get config data, mac addrs etc */
4053         if (priv->ap_fw) {
4054                 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4055                 if (!rc)
4056                         rc = mwl8k_cmd_set_hw_spec(hw);
4057         } else {
4058                 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4059         }
4060         if (rc) {
4061                 printk(KERN_ERR "%s: Cannot initialise firmware\n",
4062                        wiphy_name(hw->wiphy));
4063                 goto err_free_irq;
4064         }
4065
4066         hw->wiphy->interface_modes = 0;
4067         if (priv->ap_macids_supported)
4068                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4069         if (priv->sta_macids_supported)
4070                 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4071
4072
4073         /* Turn radio off */
4074         rc = mwl8k_cmd_radio_disable(hw);
4075         if (rc) {
4076                 printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
4077                 goto err_free_irq;
4078         }
4079
4080         /* Clear MAC address */
4081         rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4082         if (rc) {
4083                 printk(KERN_ERR "%s: Cannot clear MAC address\n",
4084                        wiphy_name(hw->wiphy));
4085                 goto err_free_irq;
4086         }
4087
4088         /* Disable interrupts */
4089         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4090         free_irq(priv->pdev->irq, hw);
4091
4092         rc = ieee80211_register_hw(hw);
4093         if (rc) {
4094                 printk(KERN_ERR "%s: Cannot register device\n",
4095                        wiphy_name(hw->wiphy));
4096                 goto err_free_queues;
4097         }
4098
4099         printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
4100                wiphy_name(hw->wiphy), priv->device_info->part_name,
4101                priv->hw_rev, hw->wiphy->perm_addr,
4102                priv->ap_fw ? "AP" : "STA",
4103                (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4104                (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4105
4106         return 0;
4107
4108 err_free_irq:
4109         iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4110         free_irq(priv->pdev->irq, hw);
4111
4112 err_free_queues:
4113         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4114                 mwl8k_txq_deinit(hw, i);
4115         mwl8k_rxq_deinit(hw, 0);
4116
4117 err_free_cookie:
4118         if (priv->cookie != NULL)
4119                 pci_free_consistent(priv->pdev, 4,
4120                                 priv->cookie, priv->cookie_dma);
4121
4122 err_stop_firmware:
4123         mwl8k_hw_reset(priv);
4124         mwl8k_release_firmware(priv);
4125
4126 err_iounmap:
4127         if (priv->regs != NULL)
4128                 pci_iounmap(pdev, priv->regs);
4129
4130         if (priv->sram != NULL)
4131                 pci_iounmap(pdev, priv->sram);
4132
4133         pci_set_drvdata(pdev, NULL);
4134         ieee80211_free_hw(hw);
4135
4136 err_free_reg:
4137         pci_release_regions(pdev);
4138
4139 err_disable_device:
4140         pci_disable_device(pdev);
4141
4142         return rc;
4143 }
4144
4145 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4146 {
4147         printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4148 }
4149
4150 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4151 {
4152         struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4153         struct mwl8k_priv *priv;
4154         int i;
4155
4156         if (hw == NULL)
4157                 return;
4158         priv = hw->priv;
4159
4160         ieee80211_stop_queues(hw);
4161
4162         ieee80211_unregister_hw(hw);
4163
4164         /* Remove TX reclaim and RX tasklets.  */
4165         tasklet_kill(&priv->poll_tx_task);
4166         tasklet_kill(&priv->poll_rx_task);
4167
4168         /* Stop hardware */
4169         mwl8k_hw_reset(priv);
4170
4171         /* Return all skbs to mac80211 */
4172         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4173                 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4174
4175         for (i = 0; i < MWL8K_TX_QUEUES; i++)
4176                 mwl8k_txq_deinit(hw, i);
4177
4178         mwl8k_rxq_deinit(hw, 0);
4179
4180         pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
4181
4182         pci_iounmap(pdev, priv->regs);
4183         pci_iounmap(pdev, priv->sram);
4184         pci_set_drvdata(pdev, NULL);
4185         ieee80211_free_hw(hw);
4186         pci_release_regions(pdev);
4187         pci_disable_device(pdev);
4188 }
4189
4190 static struct pci_driver mwl8k_driver = {
4191         .name           = MWL8K_NAME,
4192         .id_table       = mwl8k_pci_id_table,
4193         .probe          = mwl8k_probe,
4194         .remove         = __devexit_p(mwl8k_remove),
4195         .shutdown       = __devexit_p(mwl8k_shutdown),
4196 };
4197
4198 static int __init mwl8k_init(void)
4199 {
4200         return pci_register_driver(&mwl8k_driver);
4201 }
4202
4203 static void __exit mwl8k_exit(void)
4204 {
4205         pci_unregister_driver(&mwl8k_driver);
4206 }
4207
4208 module_init(mwl8k_init);
4209 module_exit(mwl8k_exit);
4210
4211 MODULE_DESCRIPTION(MWL8K_DESC);
4212 MODULE_VERSION(MWL8K_VERSION);
4213 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
4214 MODULE_LICENSE("GPL");