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 const 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, MESSAGE_TYPE_CARDINIT, 0, 0,
 160                                  sizeof(struct vnt_cmd_card_init),
 161                                  (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),
 169                                 (u8 *)init_rsp);
 170         if (status != STATUS_SUCCESS) {
 171                 dev_dbg(&priv->usb->dev,
 172                         "Cardinit request in status fail!\n");
 173                 return false;
 174         }
 175
 176         /* local ID for AES functions */
 177         status = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
 178                                 MESSAGE_REQUEST_MACREG, 1, &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)
 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)
 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)
 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                         calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
 282                         calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
 283                         calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
 284                         if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
 285                                 /* CR255, enable TX/RX IQ and
 286                                  * DC compensation mode
 287                                  */
 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                                  */
 311                                 vnt_control_out_u8(priv,
 312                                                    MESSAGE_REQUEST_BBREG,
 313                                                    0xff,
 314                                                    0x0);
 315                         }
 316                 }
 317         }
 318
 319         /* get permanent network address */
 320         memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
 321         ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
 322
 323         /* if exist SW network address, use it */
 324         dev_dbg(&priv->usb->dev, "Network address = %pM\n",
 325                 priv->current_net_addr);
 326
 327         /*
 328          * set BB and packet type at the same time
 329          * set Short Slot Time, xIFS, and RSPINF
 330          */
 331         if (priv->bb_type == BB_TYPE_11A)
 332                 priv->short_slot_time = true;
 333         else
 334                 priv->short_slot_time = false;
 335
 336         vnt_set_short_slot_time(priv);
 337
 338         priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
 339
 340         if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
 341                 status = vnt_control_in(priv, MESSAGE_TYPE_READ,
 342                                         MAC_REG_GPIOCTL1,
 343                                         MESSAGE_REQUEST_MACREG, 1, &tmp);
 344
 345                 if (status != STATUS_SUCCESS)
 346                         return false;
 347
 348                 if ((tmp & GPIO3_DATA) == 0)
 349                         vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
 350                                             GPIO3_INTMD);
 351                 else
 352                         vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
 353                                              GPIO3_INTMD);
 354         }
 355
 356         vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
 357
 358         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 359
 360         vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01);
 361
 362         vnt_radio_power_on(priv);
 363
 364         dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
 365
 366         return true;
 367 }
 368
 369 static void vnt_free_tx_bufs(struct vnt_private *priv)
 370 {
 371         struct vnt_usb_send_context *tx_context;
 372         int ii;
 373
 374         for (ii = 0; ii < priv->num_tx_context; ii++) {
 375                 tx_context = priv->tx_context[ii];
 376                 /* deallocate URBs */
 377                 if (tx_context->urb) {
 378                         usb_kill_urb(tx_context->urb);
 379                         usb_free_urb(tx_context->urb);
 380                 }
 381
 382                 kfree(tx_context);
 383         }
 384 }
 385
 386 static void vnt_free_rx_bufs(struct vnt_private *priv)
 387 {
 388         struct vnt_rcb *rcb;
 389         int ii;
 390
 391         for (ii = 0; ii < priv->num_rcb; ii++) {
 392                 rcb = priv->rcb[ii];
 393                 if (!rcb)
 394                         continue;
 395
 396                 /* deallocate URBs */
 397                 if (rcb->urb) {
 398                         usb_kill_urb(rcb->urb);
 399                         usb_free_urb(rcb->urb);
 400                 }
 401
 402                 /* deallocate skb */
 403                 if (rcb->skb)
 404                         dev_kfree_skb(rcb->skb);
 405
 406                 kfree(rcb);
 407         }
 408 }
 409
 410 static void vnt_free_int_bufs(struct vnt_private *priv)
 411 {
 412         kfree(priv->int_buf.data_buf);
 413 }
 414
 415 static bool vnt_alloc_bufs(struct vnt_private *priv)
 416 {
 417         struct vnt_usb_send_context *tx_context;
 418         struct vnt_rcb *rcb;
 419         int ii;
 420
 421         for (ii = 0; ii < priv->num_tx_context; ii++) {
 422                 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
 423                 if (!tx_context)
 424                         goto free_tx;
 425
 426                 priv->tx_context[ii] = tx_context;
 427                 tx_context->priv = priv;
 428                 tx_context->pkt_no = ii;
 429
 430                 /* allocate URBs */
 431                 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL);
 432                 if (!tx_context->urb)
 433                         goto free_tx;
 434
 435                 tx_context->in_use = false;
 436         }
 437
 438         for (ii = 0; ii < priv->num_rcb; ii++) {
 439                 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
 440                 if (!priv->rcb[ii]) {
 441                         dev_err(&priv->usb->dev,
 442                                 "failed to allocate rcb no %d\n", ii);
 443                         goto free_rx_tx;
 444                 }
 445
 446                 rcb = priv->rcb[ii];
 447
 448                 rcb->priv = priv;
 449
 450                 /* allocate URBs */
 451                 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
 452                 if (!rcb->urb)
 453                         goto free_rx_tx;
 454
 455                 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
 456                 if (!rcb->skb)
 457                         goto free_rx_tx;
 458
 459                 rcb->in_use = false;
 460
 461                 /* submit rx urb */
 462                 if (vnt_submit_rx_urb(priv, rcb))
 463                         goto free_rx_tx;
 464         }
 465
 466         priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
 467         if (!priv->interrupt_urb)
 468                 goto free_rx_tx;
 469
 470         priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
 471         if (!priv->int_buf.data_buf) {
 472                 usb_free_urb(priv->interrupt_urb);
 473                 goto free_rx_tx;
 474         }
 475
 476         return true;
 477
 478 free_rx_tx:
 479         vnt_free_rx_bufs(priv);
 480
 481 free_tx:
 482         vnt_free_tx_bufs(priv);
 483
 484         return false;
 485 }
 486
 487 static void vnt_tx_80211(struct ieee80211_hw *hw,
 488                          struct ieee80211_tx_control *control,
 489                          struct sk_buff *skb)
 490 {
 491         struct vnt_private *priv = hw->priv;
 492
 493         if (vnt_tx_packet(priv, skb))
 494                 ieee80211_free_txskb(hw, skb);
 495 }
 496
 497 static int vnt_start(struct ieee80211_hw *hw)
 498 {
 499         struct vnt_private *priv = hw->priv;
 500
 501         priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
 502
 503         if (!vnt_alloc_bufs(priv)) {
 504                 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
 505                 return -ENOMEM;
 506         }
 507
 508         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 509
 510         if (vnt_init_registers(priv) == false) {
 511                 dev_dbg(&priv->usb->dev, " init register fail\n");
 512                 goto free_all;
 513         }
 514
 515         if (vnt_key_init_table(priv))
 516                 goto free_all;
 517
 518         priv->int_interval = 1;  /* bInterval is set to 1 */
 519
 520         vnt_int_start_interrupt(priv);
 521
 522         ieee80211_wake_queues(hw);
 523
 524         return 0;
 525
 526 free_all:
 527         vnt_free_rx_bufs(priv);
 528         vnt_free_tx_bufs(priv);
 529         vnt_free_int_bufs(priv);
 530
 531         usb_kill_urb(priv->interrupt_urb);
 532         usb_free_urb(priv->interrupt_urb);
 533
 534         return -ENOMEM;
 535 }
 536
 537 static void vnt_stop(struct ieee80211_hw *hw)
 538 {
 539         struct vnt_private *priv = hw->priv;
 540         int i;
 541
 542         if (!priv)
 543                 return;
 544
 545         for (i = 0; i < MAX_KEY_TABLE; i++)
 546                 vnt_mac_disable_keyentry(priv, i);
 547
 548         /* clear all keys */
 549         priv->key_entry_inuse = 0;
 550
 551         if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
 552                 vnt_mac_shutdown(priv);
 553
 554         ieee80211_stop_queues(hw);
 555
 556         set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 557
 558         cancel_delayed_work_sync(&priv->run_command_work);
 559
 560         priv->cmd_running = false;
 561
 562         vnt_free_tx_bufs(priv);
 563         vnt_free_rx_bufs(priv);
 564         vnt_free_int_bufs(priv);
 565
 566         usb_kill_urb(priv->interrupt_urb);
 567         usb_free_urb(priv->interrupt_urb);
 568 }
 569
 570 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 571 {
 572         struct vnt_private *priv = hw->priv;
 573
 574         priv->vif = vif;
 575
 576         switch (vif->type) {
 577         case NL80211_IFTYPE_STATION:
 578                 break;
 579         case NL80211_IFTYPE_ADHOC:
 580                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 581
 582                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 583
 584                 break;
 585         case NL80211_IFTYPE_AP:
 586                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 587
 588                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 589
 590                 break;
 591         default:
 592                 return -EOPNOTSUPP;
 593         }
 594
 595         priv->op_mode = vif->type;
 596
 597         /* LED blink on TX */
 598         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
 599
 600         return 0;
 601 }
 602
 603 static void vnt_remove_interface(struct ieee80211_hw *hw,
 604                                  struct ieee80211_vif *vif)
 605 {
 606         struct vnt_private *priv = hw->priv;
 607
 608         switch (vif->type) {
 609         case NL80211_IFTYPE_STATION:
 610                 break;
 611         case NL80211_IFTYPE_ADHOC:
 612                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 613                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 614                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 615                 break;
 616         case NL80211_IFTYPE_AP:
 617                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 618                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 619                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 620                 break;
 621         default:
 622                 break;
 623         }
 624
 625         vnt_radio_power_off(priv);
 626
 627         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 628
 629         /* LED slow blink */
 630         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 631 }
 632
 633 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 634 {
 635         struct vnt_private *priv = hw->priv;
 636         struct ieee80211_conf *conf = &hw->conf;
 637
 638         if (changed & IEEE80211_CONF_CHANGE_PS) {
 639                 if (conf->flags & IEEE80211_CONF_PS)
 640                         vnt_enable_power_saving(priv, conf->listen_interval);
 641                 else
 642                         vnt_disable_power_saving(priv);
 643         }
 644
 645         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
 646             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
 647                 vnt_set_channel(priv, conf->chandef.chan->hw_value);
 648
 649                 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
 650                         priv->bb_type = BB_TYPE_11A;
 651                 else
 652                         priv->bb_type = BB_TYPE_11G;
 653         }
 654
 655         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 656                 if (priv->bb_type == BB_TYPE_11B)
 657                         priv->current_rate = RATE_1M;
 658                 else
 659                         priv->current_rate = RATE_54M;
 660
 661                 vnt_rf_setpower(priv, priv->current_rate,
 662                                 conf->chandef.chan->hw_value);
 663         }
 664
 665         return 0;
 666 }
 667
 668 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 669                                  struct ieee80211_vif *vif,
 670                                  struct ieee80211_bss_conf *conf, u32 changed)
 671 {
 672         struct vnt_private *priv = hw->priv;
 673
 674         priv->current_aid = conf->aid;
 675
 676         if (changed & BSS_CHANGED_BSSID && conf->bssid)
 677                 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
 678
 679         if (changed & BSS_CHANGED_BASIC_RATES) {
 680                 priv->basic_rates = conf->basic_rates;
 681
 682                 vnt_update_top_rates(priv);
 683
 684                 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
 685         }
 686
 687         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 688                 if (conf->use_short_preamble) {
 689                         vnt_mac_enable_barker_preamble_mode(priv);
 690                         priv->preamble_type = true;
 691                 } else {
 692                         vnt_mac_disable_barker_preamble_mode(priv);
 693                         priv->preamble_type = false;
 694                 }
 695         }
 696
 697         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 698                 if (conf->use_cts_prot)
 699                         vnt_mac_enable_protect_mode(priv);
 700                 else
 701                         vnt_mac_disable_protect_mode(priv);
 702         }
 703
 704         if (changed & BSS_CHANGED_ERP_SLOT) {
 705                 if (conf->use_short_slot)
 706                         priv->short_slot_time = true;
 707                 else
 708                         priv->short_slot_time = false;
 709
 710                 vnt_set_short_slot_time(priv);
 711                 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
 712                 vnt_update_pre_ed_threshold(priv, false);
 713         }
 714
 715         if (changed & (BSS_CHANGED_BASIC_RATES | BSS_CHANGED_ERP_PREAMBLE |
 716                        BSS_CHANGED_ERP_SLOT))
 717                 vnt_set_bss_mode(priv);
 718
 719         if (changed & BSS_CHANGED_TXPOWER)
 720                 vnt_rf_setpower(priv, priv->current_rate,
 721                                 conf->chandef.chan->hw_value);
 722
 723         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 724                 dev_dbg(&priv->usb->dev,
 725                         "Beacon enable %d\n", conf->enable_beacon);
 726
 727                 if (conf->enable_beacon) {
 728                         vnt_beacon_enable(priv, vif, conf);
 729
 730                         vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 731                 } else {
 732                         vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 733                 }
 734         }
 735
 736         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
 737             priv->op_mode != NL80211_IFTYPE_AP) {
 738                 if (conf->assoc && conf->beacon_rate) {
 739                         vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
 740                                             TFTCTL_TSFCNTREN);
 741
 742                         vnt_mac_set_beacon_interval(priv, conf->beacon_int);
 743
 744                         vnt_reset_next_tbtt(priv, conf->beacon_int);
 745
 746                         vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
 747                                        conf->sync_tsf, priv->current_tsf);
 748
 749                         vnt_update_next_tbtt(priv,
 750                                              conf->sync_tsf, conf->beacon_int);
 751                 } else {
 752                         vnt_clear_current_tsf(priv);
 753
 754                         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
 755                                              TFTCTL_TSFCNTREN);
 756                 }
 757         }
 758 }
 759
 760 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
 761                                  struct netdev_hw_addr_list *mc_list)
 762 {
 763         struct vnt_private *priv = hw->priv;
 764         struct netdev_hw_addr *ha;
 765         u64 mc_filter = 0;
 766         u32 bit_nr = 0;
 767
 768         netdev_hw_addr_list_for_each(ha, mc_list) {
 769                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
 770
 771                 mc_filter |= 1ULL << (bit_nr & 0x3f);
 772         }
 773
 774         priv->mc_list_count = mc_list->count;
 775
 776         return mc_filter;
 777 }
 778
 779 static void vnt_configure(struct ieee80211_hw *hw,
 780                           unsigned int changed_flags,
 781                           unsigned int *total_flags, u64 multicast)
 782 {
 783         struct vnt_private *priv = hw->priv;
 784         u8 rx_mode = 0;
 785
 786         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 787
 788         vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 789                        MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 790
 791         dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 792
 793         if (changed_flags & FIF_ALLMULTI) {
 794                 if (*total_flags & FIF_ALLMULTI) {
 795                         if (priv->mc_list_count > 2)
 796                                 vnt_mac_set_filter(priv, ~0);
 797                         else
 798                                 vnt_mac_set_filter(priv, multicast);
 799
 800                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 801                 } else {
 802                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
 803                 }
 804         }
 805
 806         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
 807                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
 808                         rx_mode &= ~RCR_BSSID;
 809                 else
 810                         rx_mode |= RCR_BSSID;
 811         }
 812
 813         vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
 814
 815         dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
 816 }
 817
 818 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 819                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 820                        struct ieee80211_key_conf *key)
 821 {
 822         struct vnt_private *priv = hw->priv;
 823
 824         switch (cmd) {
 825         case SET_KEY:
 826                 if (vnt_set_keys(hw, sta, vif, key))
 827                         return -EOPNOTSUPP;
 828                 break;
 829         case DISABLE_KEY:
 830                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse)) {
 831                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
 832
 833                         vnt_mac_disable_keyentry(priv, key->hw_key_idx);
 834                 }
 835
 836         default:
 837                 break;
 838         }
 839
 840         return 0;
 841 }
 842
 843 static void vnt_sw_scan_start(struct ieee80211_hw *hw,
 844                               struct ieee80211_vif *vif,
 845                               const u8 *addr)
 846 {
 847         struct vnt_private *priv = hw->priv;
 848
 849         /* Set max sensitivity*/
 850         vnt_update_pre_ed_threshold(priv, true);
 851 }
 852
 853 static void vnt_sw_scan_complete(struct ieee80211_hw *hw,
 854                                  struct ieee80211_vif *vif)
 855 {
 856         struct vnt_private *priv = hw->priv;
 857
 858         /* Return sensitivity to channel level*/
 859         vnt_update_pre_ed_threshold(priv, false);
 860 }
 861
 862 static int vnt_get_stats(struct ieee80211_hw *hw,
 863                          struct ieee80211_low_level_stats *stats)
 864 {
 865         struct vnt_private *priv = hw->priv;
 866
 867         memcpy(stats, &priv->low_stats, sizeof(*stats));
 868
 869         return 0;
 870 }
 871
 872 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 873 {
 874         struct vnt_private *priv = hw->priv;
 875
 876         return priv->current_tsf;
 877 }
 878
 879 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 880                         u64 tsf)
 881 {
 882         struct vnt_private *priv = hw->priv;
 883
 884         vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
 885 }
 886
 887 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 888 {
 889         struct vnt_private *priv = hw->priv;
 890
 891         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 892
 893         vnt_clear_current_tsf(priv);
 894 }
 895
 896 static const struct ieee80211_ops vnt_mac_ops = {
 897         .tx                     = vnt_tx_80211,
 898         .start                  = vnt_start,
 899         .stop                   = vnt_stop,
 900         .add_interface          = vnt_add_interface,
 901         .remove_interface       = vnt_remove_interface,
 902         .config                 = vnt_config,
 903         .bss_info_changed       = vnt_bss_info_changed,
 904         .prepare_multicast      = vnt_prepare_multicast,
 905         .configure_filter       = vnt_configure,
 906         .set_key                = vnt_set_key,
 907         .sw_scan_start          = vnt_sw_scan_start,
 908         .sw_scan_complete       = vnt_sw_scan_complete,
 909         .get_stats              = vnt_get_stats,
 910         .get_tsf                = vnt_get_tsf,
 911         .set_tsf                = vnt_set_tsf,
 912         .reset_tsf              = vnt_reset_tsf,
 913 };
 914
 915 int vnt_init(struct vnt_private *priv)
 916 {
 917         if (!(vnt_init_registers(priv)))
 918                 return -EAGAIN;
 919
 920         SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
 921
 922         vnt_init_bands(priv);
 923
 924         if (ieee80211_register_hw(priv->hw))
 925                 return -ENODEV;
 926
 927         priv->mac_hw = true;
 928
 929         vnt_radio_power_off(priv);
 930
 931         return 0;
 932 }
 933
 934 static int
 935 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 936 {
 937         struct usb_device *udev;
 938         struct vnt_private *priv;
 939         struct ieee80211_hw *hw;
 940         struct wiphy *wiphy;
 941         int rc = 0;
 942
 943         udev = usb_get_dev(interface_to_usbdev(intf));
 944
 945         dev_notice(&udev->dev, "%s Ver. %s\n",
 946                    DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
 947         dev_notice(&udev->dev,
 948                    "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
 949
 950         hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
 951         if (!hw) {
 952                 dev_err(&udev->dev, "could not register ieee80211_hw\n");
 953                 rc = -ENOMEM;
 954                 goto err_nomem;
 955         }
 956
 957         priv = hw->priv;
 958         priv->hw = hw;
 959         priv->usb = udev;
 960         priv->intf = intf;
 961
 962         vnt_set_options(priv);
 963
 964         spin_lock_init(&priv->lock);
 965         mutex_init(&priv->usb_lock);
 966
 967         INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
 968
 969         usb_set_intfdata(intf, priv);
 970
 971         wiphy = priv->hw->wiphy;
 972
 973         wiphy->frag_threshold = FRAG_THRESH_DEF;
 974         wiphy->rts_threshold = RTS_THRESH_DEF;
 975         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 976                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
 977
 978         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
 979         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
 980         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
 981         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
 982         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
 983         ieee80211_hw_set(priv->hw, PS_NULLFUNC_STACK);
 984
 985         priv->hw->max_signal = 100;
 986
 987         SET_IEEE80211_DEV(priv->hw, &intf->dev);
 988
 989         rc = usb_reset_device(priv->usb);
 990         if (rc)
 991                 dev_warn(&priv->usb->dev,
 992                          "%s reset fail status=%d\n", __func__, rc);
 993
 994         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 995         vnt_reset_command_timer(priv);
 996
 997         vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
 998
 999         return 0;
1000
1001 err_nomem:
1002         usb_put_dev(udev);
1003
1004         return rc;
1005 }
1006
1007 static void vt6656_disconnect(struct usb_interface *intf)
1008 {
1009         struct vnt_private *priv = usb_get_intfdata(intf);
1010
1011         if (!priv)
1012                 return;
1013
1014         if (priv->mac_hw)
1015                 ieee80211_unregister_hw(priv->hw);
1016
1017         usb_set_intfdata(intf, NULL);
1018         usb_put_dev(interface_to_usbdev(intf));
1019
1020         set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1021
1022         ieee80211_free_hw(priv->hw);
1023 }
1024
1025 #ifdef CONFIG_PM
1026
1027 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1028 {
1029         return 0;
1030 }
1031
1032 static int vt6656_resume(struct usb_interface *intf)
1033 {
1034         return 0;
1035 }
1036
1037 #endif /* CONFIG_PM */
1038
1039 MODULE_DEVICE_TABLE(usb, vt6656_table);
1040
1041 static struct usb_driver vt6656_driver = {
1042         .name =         DEVICE_NAME,
1043         .probe =        vt6656_probe,
1044         .disconnect =   vt6656_disconnect,
1045         .id_table =     vt6656_table,
1046 #ifdef CONFIG_PM
1047         .suspend = vt6656_suspend,
1048         .resume = vt6656_resume,
1049 #endif /* CONFIG_PM */
1050 };
1051
1052 module_usb_driver(vt6656_driver);