drivers/staging/vt6656/main_usb.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  *
  16  * File: main_usb.c
  17  *
  18  * Purpose: driver entry for initial, open, close, tx and rx.
  19  *
  20  * Author: Lyndon Chen
  21  *
  22  * Date: Dec 8, 2005
  23  *
  24  * Functions:
  25  *
  26  *   vt6656_probe - module initial (insmod) driver entry
  27  *   vnt_free_tx_bufs - free tx buffer function
  28  *   vnt_init_registers- initial MAC & BBP & RF internal registers.
  29  *
  30  * Revision History:
  31  */
  32 #undef __NO_VERSION__
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/file.h>
  36 #include "device.h"
  37 #include "card.h"
  38 #include "baseband.h"
  39 #include "mac.h"
  40 #include "power.h"
  41 #include "wcmd.h"
  42 #include "rxtx.h"
  43 #include "dpc.h"
  44 #include "rf.h"
  45 #include "firmware.h"
  46 #include "usbpipe.h"
  47 #include "channel.h"
  48 #include "int.h"
  49
  50 /*
  51  * define module options
  52  */
  53
  54 /* version information */
  55 #define DRIVER_AUTHOR \
  56         "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
  57 MODULE_AUTHOR(DRIVER_AUTHOR);
  58 MODULE_LICENSE("GPL");
  59 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
  60
  61 #define RX_DESC_DEF0 64
  62 static int vnt_rx_buffers = RX_DESC_DEF0;
  63 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
  64 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
  65
  66 #define TX_DESC_DEF0 64
  67 static int vnt_tx_buffers = TX_DESC_DEF0;
  68 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
  69 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
  70
  71 #define RTS_THRESH_DEF     2347
  72 #define FRAG_THRESH_DEF     2346
  73 #define SHORT_RETRY_DEF     8
  74 #define LONG_RETRY_DEF     4
  75
  76 /* BasebandType[] baseband type selected
  77    0: indicate 802.11a type
  78    1: indicate 802.11b type
  79    2: indicate 802.11g type
  80 */
  81
  82 #define BBP_TYPE_DEF     2
  83
  84 /*
  85  * Static vars definitions
  86  */
  87
  88 static struct usb_device_id vt6656_table[] = {
  89         {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
  90         {}
  91 };
  92
  93 static void vnt_set_options(struct vnt_private *priv)
  94 {
  95         /* Set number of TX buffers */
  96         if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
  97                 priv->num_tx_context = TX_DESC_DEF0;
  98         else
  99                 priv->num_tx_context = vnt_tx_buffers;
 100
 101         /* Set number of RX buffers */
 102         if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
 103                 priv->num_rcb = RX_DESC_DEF0;
 104         else
 105                 priv->num_rcb = vnt_rx_buffers;
 106
 107         priv->short_retry_limit = SHORT_RETRY_DEF;
 108         priv->long_retry_limit = LONG_RETRY_DEF;
 109         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 110         priv->bb_type = BBP_TYPE_DEF;
 111         priv->packet_type = priv->bb_type;
 112         priv->auto_fb_ctrl = AUTO_FB_0;
 113         priv->preamble_type = 0;
 114         priv->exist_sw_net_addr = false;
 115 }
 116
 117 /*
 118  * initialization of MAC & BBP registers
 119  */
 120 static int vnt_init_registers(struct vnt_private *priv)
 121 {
 122         struct vnt_cmd_card_init *init_cmd = &priv->init_command;
 123         struct vnt_rsp_card_init *init_rsp = &priv->init_response;
 124         u8 antenna;
 125         int ii;
 126         int status = STATUS_SUCCESS;
 127         u8 tmp;
 128         u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
 129
 130         dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
 131                                 DEVICE_INIT_COLD, priv->packet_type);
 132
 133         if (!vnt_check_firmware_version(priv)) {
 134                 if (vnt_download_firmware(priv) == true) {
 135                         if (vnt_firmware_branch_to_sram(priv) == false) {
 136                                 dev_dbg(&priv->usb->dev,
 137                                         " vnt_firmware_branch_to_sram fail\n");
 138                                 return false;
 139                         }
 140                 } else {
 141                         dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n");
 142                         return false;
 143                 }
 144         }
 145
 146         if (!vnt_vt3184_init(priv)) {
 147                 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
 148                 return false;
 149         }
 150
 151         init_cmd->init_class = DEVICE_INIT_COLD;
 152         init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
 153         for (ii = 0; ii < 6; ii++)
 154                 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
 155         init_cmd->short_retry_limit = priv->short_retry_limit;
 156         init_cmd->long_retry_limit = priv->long_retry_limit;
 157
 158         /* issue card_init command to device */
 159         status = vnt_control_out(priv,
 160                 MESSAGE_TYPE_CARDINIT, 0, 0,
 161                 sizeof(struct vnt_cmd_card_init), (u8 *)init_cmd);
 162         if (status != STATUS_SUCCESS) {
 163                 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
 164                 return false;
 165         }
 166
 167         status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
 168                 sizeof(struct vnt_rsp_card_init), (u8 *)init_rsp);
 169         if (status != STATUS_SUCCESS) {
 170                 dev_dbg(&priv->usb->dev,
 171                         "Cardinit request in status fail!\n");
 172                 return false;
 173         }
 174
 175         /* local ID for AES functions */
 176         status = vnt_control_in(priv, MESSAGE_TYPE_READ,
 177                 MAC_REG_LOCALID, MESSAGE_REQUEST_MACREG, 1,
 178                         &priv->local_id);
 179         if (status != STATUS_SUCCESS)
 180                 return false;
 181
 182         /* do MACbSoftwareReset in MACvInitialize */
 183
 184         priv->top_ofdm_basic_rate = RATE_24M;
 185         priv->top_cck_basic_rate = RATE_1M;
 186
 187         /* target to IF pin while programming to RF chip */
 188         priv->power = 0xFF;
 189
 190         priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
 191         priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
 192         /* load power table */
 193         for (ii = 0; ii < 14; ii++) {
 194                 priv->cck_pwr_tbl[ii] =
 195                         priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
 196                 if (priv->cck_pwr_tbl[ii] == 0)
 197                         priv->cck_pwr_tbl[ii] = priv->cck_pwr;
 198
 199                 priv->ofdm_pwr_tbl[ii] =
 200                                 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
 201                 if (priv->ofdm_pwr_tbl[ii] == 0)
 202                         priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
 203         }
 204
 205         /*
 206          * original zonetype is USA, but custom zonetype is Europe,
 207          * then need to recover 12, 13, 14 channels with 11 channel
 208          */
 209         for (ii = 11; ii < 14; ii++) {
 210                 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
 211                 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
 212         }
 213
 214         priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
 215
 216         /* load OFDM A power table */
 217         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 218                 priv->ofdm_a_pwr_tbl[ii] =
 219                         priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
 220
 221                 if (priv->ofdm_a_pwr_tbl[ii] == 0)
 222                         priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
 223         }
 224
 225         antenna = priv->eeprom[EEP_OFS_ANTENNA];
 226
 227         if (antenna & EEP_ANTINV)
 228                 priv->tx_rx_ant_inv = true;
 229         else
 230                 priv->tx_rx_ant_inv = false;
 231
 232         antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 233
 234         if (antenna == 0) /* if not set default is both */
 235                 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 236
 237         if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 238                 priv->tx_antenna_mode = ANT_B;
 239                 priv->rx_antenna_sel = 1;
 240
 241                 if (priv->tx_rx_ant_inv == true)
 242                         priv->rx_antenna_mode = ANT_A;
 243                 else
 244                         priv->rx_antenna_mode = ANT_B;
 245         } else  {
 246                 priv->rx_antenna_sel = 0;
 247
 248                 if (antenna & EEP_ANTENNA_AUX) {
 249                         priv->tx_antenna_mode = ANT_A;
 250
 251                         if (priv->tx_rx_ant_inv == true)
 252                                 priv->rx_antenna_mode = ANT_B;
 253                         else
 254                                 priv->rx_antenna_mode = ANT_A;
 255                 } else {
 256                         priv->tx_antenna_mode = ANT_B;
 257
 258                 if (priv->tx_rx_ant_inv == true)
 259                         priv->rx_antenna_mode = ANT_A;
 260                 else
 261                         priv->rx_antenna_mode = ANT_B;
 262                 }
 263         }
 264
 265         /* Set initial antenna mode */
 266         vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
 267
 268         /* get Auto Fall Back type */
 269         priv->auto_fb_ctrl = AUTO_FB_0;
 270
 271         /* default Auto Mode */
 272         priv->bb_type = BB_TYPE_11G;
 273
 274         /* get RFType */
 275         priv->rf_type = init_rsp->rf_type;
 276
 277         /* load vt3266 calibration parameters in EEPROM */
 278         if (priv->rf_type == RF_VT3226D0) {
 279                 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
 280                     (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
 281
 282                         calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
 283                         calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
 284                         calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
 285                         if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
 286                                 /* CR255, enable TX/RX IQ and
 287                                    DC compensation mode */
 288                                 vnt_control_out_u8(priv,
 289                                                    MESSAGE_REQUEST_BBREG,
 290                                                    0xff,
 291                                                    0x03);
 292                                 /* CR251, TX I/Q Imbalance Calibration */
 293                                 vnt_control_out_u8(priv,
 294                                                    MESSAGE_REQUEST_BBREG,
 295                                                    0xfb,
 296                                                    calib_tx_iq);
 297                                 /* CR252, TX DC-Offset Calibration */
 298                                 vnt_control_out_u8(priv,
 299                                                    MESSAGE_REQUEST_BBREG,
 300                                                    0xfC,
 301                                                    calib_tx_dc);
 302                                 /* CR253, RX I/Q Imbalance Calibration */
 303                                 vnt_control_out_u8(priv,
 304                                                    MESSAGE_REQUEST_BBREG,
 305                                                    0xfd,
 306                                                    calib_rx_iq);
 307                         } else {
 308                                 /* CR255, turn off
 309                                    BB Calibration compensation */
 310                                 vnt_control_out_u8(priv,
 311                                                    MESSAGE_REQUEST_BBREG,
 312                                                    0xff,
 313                                                    0x0);
 314                         }
 315                 }
 316         }
 317
 318         /* get permanent network address */
 319         memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
 320         ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
 321
 322         /* if exist SW network address, use it */
 323         dev_dbg(&priv->usb->dev, "Network address = %pM\n",
 324                 priv->current_net_addr);
 325
 326         /*
 327         * set BB and packet type at the same time
 328         * set Short Slot Time, xIFS, and RSPINF
 329         */
 330         if (priv->bb_type == BB_TYPE_11A)
 331                 priv->short_slot_time = true;
 332         else
 333                 priv->short_slot_time = false;
 334
 335         vnt_set_short_slot_time(priv);
 336
 337         priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
 338
 339         if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
 340                 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
 341                         MAC_REG_GPIOCTL1, MESSAGE_REQUEST_MACREG, 1, &tmp);
 342
 343                 if (status != STATUS_SUCCESS)
 344                         return false;
 345
 346                 if ((tmp & GPIO3_DATA) == 0)
 347                         vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
 348                                                                 GPIO3_INTMD);
 349                 else
 350                         vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
 351                                                                 GPIO3_INTMD);
 352         }
 353
 354         vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
 355
 356         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 357
 358         vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
 359
 360         vnt_radio_power_on(priv);
 361
 362         dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
 363
 364         return true;
 365 }
 366
 367 static void vnt_free_tx_bufs(struct vnt_private *priv)
 368 {
 369         struct vnt_usb_send_context *tx_context;
 370         int ii;
 371
 372         for (ii = 0; ii < priv->num_tx_context; ii++) {
 373                 tx_context = priv->tx_context[ii];
 374                 /* deallocate URBs */
 375                 if (tx_context->urb) {
 376                         usb_kill_urb(tx_context->urb);
 377                         usb_free_urb(tx_context->urb);
 378                 }
 379
 380                 kfree(tx_context);
 381         }
 382 }
 383
 384 static void vnt_free_rx_bufs(struct vnt_private *priv)
 385 {
 386         struct vnt_rcb *rcb;
 387         int ii;
 388
 389         for (ii = 0; ii < priv->num_rcb; ii++) {
 390                 rcb = priv->rcb[ii];
 391                 if (!rcb)
 392                         continue;
 393
 394                 /* deallocate URBs */
 395                 if (rcb->urb) {
 396                         usb_kill_urb(rcb->urb);
 397                         usb_free_urb(rcb->urb);
 398                 }
 399
 400                 /* deallocate skb */
 401                 if (rcb->skb)
 402                         dev_kfree_skb(rcb->skb);
 403
 404                 kfree(rcb);
 405         }
 406 }
 407
 408 static void usb_device_reset(struct vnt_private *priv)
 409 {
 410         int status;
 411
 412         status = usb_reset_device(priv->usb);
 413         if (status)
 414                 dev_warn(&priv->usb->dev,
 415                          "usb_device_reset fail status=%d\n", status);
 416 }
 417
 418 static void vnt_free_int_bufs(struct vnt_private *priv)
 419 {
 420         kfree(priv->int_buf.data_buf);
 421 }
 422
 423 static bool vnt_alloc_bufs(struct vnt_private *priv)
 424 {
 425         struct vnt_usb_send_context *tx_context;
 426         struct vnt_rcb *rcb;
 427         int ii;
 428
 429         for (ii = 0; ii < priv->num_tx_context; ii++) {
 430                 tx_context = kmalloc(sizeof(struct vnt_usb_send_context),
 431                                                                 GFP_KERNEL);
 432                 if (tx_context == NULL)
 433                         goto free_tx;
 434
 435                 priv->tx_context[ii] = tx_context;
 436                 tx_context->priv = priv;
 437                 tx_context->pkt_no = ii;
 438
 439                 /* allocate URBs */
 440                 tx_context->urb = usb_alloc_urb(0, GFP_ATOMIC);
 441                 if (!tx_context->urb) {
 442                         dev_err(&priv->usb->dev, "alloc tx urb failed\n");
 443                         goto free_tx;
 444                 }
 445
 446                 tx_context->in_use = false;
 447         }
 448
 449         for (ii = 0; ii < priv->num_rcb; ii++) {
 450                 priv->rcb[ii] = kzalloc(sizeof(struct vnt_rcb), GFP_KERNEL);
 451                 if (!priv->rcb[ii]) {
 452                         dev_err(&priv->usb->dev,
 453                                         "failed to allocate rcb no %d\n", ii);
 454                         goto free_rx_tx;
 455                 }
 456
 457                 rcb = priv->rcb[ii];
 458
 459                 rcb->priv = priv;
 460
 461                 /* allocate URBs */
 462                 rcb->urb = usb_alloc_urb(0, GFP_ATOMIC);
 463                 if (rcb->urb == NULL) {
 464                         dev_err(&priv->usb->dev, "Failed to alloc rx urb\n");
 465                         goto free_rx_tx;
 466                 }
 467
 468                 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
 469                 if (rcb->skb == NULL)
 470                         goto free_rx_tx;
 471
 472                 rcb->in_use = false;
 473
 474                 /* submit rx urb */
 475                 if (vnt_submit_rx_urb(priv, rcb))
 476                         goto free_rx_tx;
 477         }
 478
 479         priv->interrupt_urb = usb_alloc_urb(0, GFP_ATOMIC);
 480         if (priv->interrupt_urb == NULL) {
 481                 dev_err(&priv->usb->dev, "Failed to alloc int urb\n");
 482                 goto free_rx_tx;
 483         }
 484
 485         priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
 486         if (priv->int_buf.data_buf == NULL) {
 487                 usb_free_urb(priv->interrupt_urb);
 488                 goto free_rx_tx;
 489         }
 490
 491         return true;
 492
 493 free_rx_tx:
 494         vnt_free_rx_bufs(priv);
 495
 496 free_tx:
 497         vnt_free_tx_bufs(priv);
 498
 499         return false;
 500 }
 501
 502 static void vnt_tx_80211(struct ieee80211_hw *hw,
 503         struct ieee80211_tx_control *control, struct sk_buff *skb)
 504 {
 505         struct vnt_private *priv = hw->priv;
 506
 507         if (vnt_tx_packet(priv, skb))
 508                 ieee80211_free_txskb(hw, skb);
 509 }
 510
 511 static int vnt_start(struct ieee80211_hw *hw)
 512 {
 513         struct vnt_private *priv = hw->priv;
 514
 515         priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
 516
 517         if (!vnt_alloc_bufs(priv)) {
 518                 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
 519                 return -ENOMEM;
 520         }
 521
 522         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 523
 524         if (vnt_init_registers(priv) == false) {
 525                 dev_dbg(&priv->usb->dev, " init register fail\n");
 526                 goto free_all;
 527         }
 528
 529         priv->int_interval = 1;  /* bInterval is set to 1 */
 530
 531         vnt_int_start_interrupt(priv);
 532
 533         ieee80211_wake_queues(hw);
 534
 535         return 0;
 536
 537 free_all:
 538         vnt_free_rx_bufs(priv);
 539         vnt_free_tx_bufs(priv);
 540         vnt_free_int_bufs(priv);
 541
 542         usb_kill_urb(priv->interrupt_urb);
 543         usb_free_urb(priv->interrupt_urb);
 544
 545         return -ENOMEM;
 546 }
 547
 548 static void vnt_stop(struct ieee80211_hw *hw)
 549 {
 550         struct vnt_private *priv = hw->priv;
 551         int i;
 552
 553         if (!priv)
 554                 return;
 555
 556         for (i = 0; i < MAX_KEY_TABLE; i++)
 557                 vnt_mac_disable_keyentry(priv, i);
 558
 559         /* clear all keys */
 560         priv->key_entry_inuse = 0;
 561
 562         if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
 563                 vnt_mac_shutdown(priv);
 564
 565         ieee80211_stop_queues(hw);
 566
 567         set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 568
 569         cancel_delayed_work_sync(&priv->run_command_work);
 570
 571         priv->cmd_running = false;
 572
 573         vnt_free_tx_bufs(priv);
 574         vnt_free_rx_bufs(priv);
 575         vnt_free_int_bufs(priv);
 576
 577         usb_kill_urb(priv->interrupt_urb);
 578         usb_free_urb(priv->interrupt_urb);
 579 }
 580
 581 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 582 {
 583         struct vnt_private *priv = hw->priv;
 584
 585         priv->vif = vif;
 586
 587         switch (vif->type) {
 588         case NL80211_IFTYPE_STATION:
 589                 break;
 590         case NL80211_IFTYPE_ADHOC:
 591                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 592
 593                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 594
 595                 break;
 596         case NL80211_IFTYPE_AP:
 597                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 598
 599                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 600
 601                 break;
 602         default:
 603                 return -EOPNOTSUPP;
 604         }
 605
 606         priv->op_mode = vif->type;
 607
 608         vnt_set_bss_mode(priv);
 609
 610         /* LED blink on TX */
 611         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
 612
 613         return 0;
 614 }
 615
 616 static void vnt_remove_interface(struct ieee80211_hw *hw,
 617                 struct ieee80211_vif *vif)
 618 {
 619         struct vnt_private *priv = hw->priv;
 620
 621         switch (vif->type) {
 622         case NL80211_IFTYPE_STATION:
 623                 break;
 624         case NL80211_IFTYPE_ADHOC:
 625                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 626                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 627                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 628                 break;
 629         case NL80211_IFTYPE_AP:
 630                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 631                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 632                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 633                 break;
 634         default:
 635                 break;
 636         }
 637
 638         vnt_radio_power_off(priv);
 639
 640         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 641
 642         /* LED slow blink */
 643         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 644 }
 645
 646 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 647 {
 648         struct vnt_private *priv = hw->priv;
 649         struct ieee80211_conf *conf = &hw->conf;
 650         u8 bb_type;
 651
 652         if (changed & IEEE80211_CONF_CHANGE_PS) {
 653                 if (conf->flags & IEEE80211_CONF_PS)
 654                         vnt_enable_power_saving(priv, conf->listen_interval);
 655                 else
 656                         vnt_disable_power_saving(priv);
 657         }
 658
 659         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
 660                         (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
 661                 vnt_set_channel(priv, conf->chandef.chan->hw_value);
 662
 663                 if (conf->chandef.chan->band == IEEE80211_BAND_5GHZ)
 664                         bb_type = BB_TYPE_11A;
 665                 else
 666                         bb_type = BB_TYPE_11G;
 667
 668                 if (priv->bb_type != bb_type) {
 669                         priv->bb_type = bb_type;
 670
 671                         vnt_set_bss_mode(priv);
 672                 }
 673         }
 674
 675         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 676                 if (priv->bb_type == BB_TYPE_11B)
 677                         priv->current_rate = RATE_1M;
 678                 else
 679                         priv->current_rate = RATE_54M;
 680
 681                 vnt_rf_setpower(priv, priv->current_rate,
 682                                 conf->chandef.chan->hw_value);
 683         }
 684
 685         return 0;
 686 }
 687
 688 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 689                 struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
 690                 u32 changed)
 691 {
 692         struct vnt_private *priv = hw->priv;
 693
 694         priv->current_aid = conf->aid;
 695
 696         if (changed & BSS_CHANGED_BSSID && conf->bssid)
 697                 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
 698
 699
 700         if (changed & BSS_CHANGED_BASIC_RATES) {
 701                 priv->basic_rates = conf->basic_rates;
 702
 703                 vnt_update_top_rates(priv);
 704
 705                 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
 706         }
 707
 708         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 709                 if (conf->use_short_preamble) {
 710                         vnt_mac_enable_barker_preamble_mode(priv);
 711                         priv->preamble_type = true;
 712                 } else {
 713                         vnt_mac_disable_barker_preamble_mode(priv);
 714                         priv->preamble_type = false;
 715                 }
 716         }
 717
 718         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 719                 if (conf->use_cts_prot)
 720                         vnt_mac_enable_protect_mode(priv);
 721                 else
 722                         vnt_mac_disable_protect_mode(priv);
 723         }
 724
 725         if (changed & BSS_CHANGED_ERP_SLOT) {
 726                 if (conf->use_short_slot)
 727                         priv->short_slot_time = true;
 728                 else
 729                         priv->short_slot_time = false;
 730
 731                 vnt_set_short_slot_time(priv);
 732                 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
 733                 vnt_update_pre_ed_threshold(priv, false);
 734         }
 735
 736         if (changed & BSS_CHANGED_TXPOWER)
 737                 vnt_rf_setpower(priv, priv->current_rate,
 738                                         conf->chandef.chan->hw_value);
 739
 740         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 741                 dev_dbg(&priv->usb->dev,
 742                                 "Beacon enable %d\n", conf->enable_beacon);
 743
 744                 if (conf->enable_beacon) {
 745                         vnt_beacon_enable(priv, vif, conf);
 746
 747                         vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 748                 } else {
 749                         vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 750                 }
 751         }
 752
 753         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
 754             priv->op_mode != NL80211_IFTYPE_AP) {
 755                 if (conf->assoc && conf->beacon_rate) {
 756                         vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
 757                                             TFTCTL_TSFCNTREN);
 758
 759                         vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
 760                                        conf->sync_tsf, priv->current_tsf);
 761
 762                         vnt_mac_set_beacon_interval(priv, conf->beacon_int);
 763
 764                         vnt_reset_next_tbtt(priv, conf->beacon_int);
 765                 } else {
 766                         vnt_clear_current_tsf(priv);
 767
 768                         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
 769                                              TFTCTL_TSFCNTREN);
 770                 }
 771         }
 772 }
 773
 774 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
 775         struct netdev_hw_addr_list *mc_list)
 776 {
 777         struct vnt_private *priv = hw->priv;
 778         struct netdev_hw_addr *ha;
 779         u64 mc_filter = 0;
 780         u32 bit_nr = 0;
 781
 782         netdev_hw_addr_list_for_each(ha, mc_list) {
 783                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
 784
 785                 mc_filter |= 1ULL << (bit_nr & 0x3f);
 786         }
 787
 788         priv->mc_list_count = mc_list->count;
 789
 790         return mc_filter;
 791 }
 792
 793 static void vnt_configure(struct ieee80211_hw *hw,
 794         unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
 795 {
 796         struct vnt_private *priv = hw->priv;
 797         u8 rx_mode = 0;
 798         int rc;
 799
 800         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 801
 802         rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 803                 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 804
 805         if (!rc)
 806                 rx_mode = RCR_MULTICAST | RCR_BROADCAST;
 807
 808         dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 809
 810         if (changed_flags & FIF_ALLMULTI) {
 811                 if (*total_flags & FIF_ALLMULTI) {
 812                         if (priv->mc_list_count > 2)
 813                                 vnt_mac_set_filter(priv, ~0);
 814                         else
 815                                 vnt_mac_set_filter(priv, multicast);
 816
 817                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 818                 } else {
 819                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
 820                 }
 821
 822         }
 823
 824         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
 825                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
 826                         rx_mode &= ~RCR_BSSID;
 827                 else
 828                         rx_mode |= RCR_BSSID;
 829         }
 830
 831         vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
 832
 833         dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
 834 }
 835
 836 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 837         struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 838                 struct ieee80211_key_conf *key)
 839 {
 840         struct vnt_private *priv = hw->priv;
 841
 842         switch (cmd) {
 843         case SET_KEY:
 844                 if (vnt_set_keys(hw, sta, vif, key))
 845                         return -EOPNOTSUPP;
 846                 break;
 847         case DISABLE_KEY:
 848                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
 849                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
 850         default:
 851                 break;
 852         }
 853
 854         return 0;
 855 }
 856
 857 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
 858                               struct ieee80211_vif *vif,
 859                               const u8 *addr)
 860 {
 861         struct vnt_private *priv = hw->priv;
 862
 863         vnt_set_bss_mode(priv);
 864         /* Set max sensitivity*/
 865         vnt_update_pre_ed_threshold(priv, true);
 866 }
 867
 868 static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
 869                                  struct ieee80211_vif *vif)
 870 {
 871         struct vnt_private *priv = hw->priv;
 872
 873         /* Return sensitivity to channel level*/
 874         vnt_update_pre_ed_threshold(priv, false);
 875 }
 876
 877 static int vnt_get_stats(struct ieee80211_hw *hw,
 878                                 struct ieee80211_low_level_stats *stats)
 879 {
 880         struct vnt_private *priv = hw->priv;
 881
 882         memcpy(stats, &priv->low_stats, sizeof(*stats));
 883
 884         return 0;
 885 }
 886
 887 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 888 {
 889         struct vnt_private *priv = hw->priv;
 890
 891         return priv->current_tsf;
 892 }
 893
 894 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 895                         u64 tsf)
 896 {
 897         struct vnt_private *priv = hw->priv;
 898
 899         vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
 900 }
 901
 902 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 903 {
 904         struct vnt_private *priv = hw->priv;
 905
 906         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 907
 908         vnt_clear_current_tsf(priv);
 909 }
 910
 911 static const struct ieee80211_ops vnt_mac_ops = {
 912         .tx                     = vnt_tx_80211,
 913         .start                  = vnt_start,
 914         .stop                   = vnt_stop,
 915         .add_interface          = vnt_add_interface,
 916         .remove_interface       = vnt_remove_interface,
 917         .config                 = vnt_config,
 918         .bss_info_changed       = vnt_bss_info_changed,
 919         .prepare_multicast      = vnt_prepare_multicast,
 920         .configure_filter       = vnt_configure,
 921         .set_key                = vnt_set_key,
 922         .sw_scan_start          = vnt_sw_scan_start,
 923         .sw_scan_complete       = vnt_sw_scan_complete,
 924         .get_stats              = vnt_get_stats,
 925         .get_tsf                = vnt_get_tsf,
 926         .set_tsf                = vnt_set_tsf,
 927         .reset_tsf              = vnt_reset_tsf,
 928 };
 929
 930 int vnt_init(struct vnt_private *priv)
 931 {
 932
 933         if (!(vnt_init_registers(priv)))
 934                 return -EAGAIN;
 935
 936         SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
 937
 938         vnt_init_bands(priv);
 939
 940         if (ieee80211_register_hw(priv->hw))
 941                 return -ENODEV;
 942
 943         priv->mac_hw = true;
 944
 945         vnt_radio_power_off(priv);
 946
 947         return 0;
 948 }
 949
 950 static int
 951 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 952 {
 953         struct usb_device *udev;
 954         struct vnt_private *priv;
 955         struct ieee80211_hw *hw;
 956         struct wiphy *wiphy;
 957         int rc = 0;
 958
 959         udev = usb_get_dev(interface_to_usbdev(intf));
 960
 961         dev_notice(&udev->dev, "%s Ver. %s\n",
 962                                         DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
 963         dev_notice(&udev->dev,
 964                 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
 965
 966         hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
 967         if (!hw) {
 968                 dev_err(&udev->dev, "could not register ieee80211_hw\n");
 969                 rc = -ENOMEM;
 970                 goto err_nomem;
 971         }
 972
 973         priv = hw->priv;
 974         priv->hw = hw;
 975         priv->usb = udev;
 976
 977         vnt_set_options(priv);
 978
 979         spin_lock_init(&priv->lock);
 980         mutex_init(&priv->usb_lock);
 981
 982         INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
 983
 984         usb_set_intfdata(intf, priv);
 985
 986         wiphy = priv->hw->wiphy;
 987
 988         wiphy->frag_threshold = FRAG_THRESH_DEF;
 989         wiphy->rts_threshold = RTS_THRESH_DEF;
 990         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 991                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
 992
 993         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
 994         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
 995         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
 996         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
 997         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
 998
 999         priv->hw->max_signal = 100;
1000
1001         SET_IEEE80211_DEV(priv->hw, &intf->dev);
1002
1003         usb_device_reset(priv);
1004
1005         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
1006         vnt_reset_command_timer(priv);
1007
1008         vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
1009
1010         return 0;
1011
1012 err_nomem:
1013         usb_put_dev(udev);
1014
1015         return rc;
1016 }
1017
1018 static void vt6656_disconnect(struct usb_interface *intf)
1019 {
1020         struct vnt_private *priv = usb_get_intfdata(intf);
1021
1022         if (!priv)
1023                 return;
1024
1025         if (priv->mac_hw)
1026                 ieee80211_unregister_hw(priv->hw);
1027
1028         usb_set_intfdata(intf, NULL);
1029         usb_put_dev(interface_to_usbdev(intf));
1030
1031         set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1032
1033         ieee80211_free_hw(priv->hw);
1034 }
1035
1036 #ifdef CONFIG_PM
1037
1038 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1039 {
1040         return 0;
1041 }
1042
1043 static int vt6656_resume(struct usb_interface *intf)
1044 {
1045         return 0;
1046 }
1047
1048 #endif /* CONFIG_PM */
1049
1050 MODULE_DEVICE_TABLE(usb, vt6656_table);
1051
1052 static struct usb_driver vt6656_driver = {
1053         .name =         DEVICE_NAME,
1054         .probe =        vt6656_probe,
1055         .disconnect =   vt6656_disconnect,
1056         .id_table =     vt6656_table,
1057 #ifdef CONFIG_PM
1058         .suspend = vt6656_suspend,
1059         .resume = vt6656_resume,
1060 #endif /* CONFIG_PM */
1061 };
1062
1063 module_usb_driver(vt6656_driver);