drivers/staging/vt6656/main_usb.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   4  * All rights reserved.
   5  *
   6  * File: main_usb.c
   7  *
   8  * Purpose: driver entry for initial, open, close, tx and rx.
   9  *
  10  * Author: Lyndon Chen
  11  *
  12  * Date: Dec 8, 2005
  13  *
  14  * Functions:
  15  *
  16  *   vt6656_probe - module initial (insmod) driver entry
  17  *   vnt_free_tx_bufs - free tx buffer function
  18  *   vnt_init_registers- initial MAC & BBP & RF internal registers.
  19  *
  20  * Revision History:
  21  */
  22 #undef __NO_VERSION__
  23
  24 #include <linux/bits.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/file.h>
  27 #include <linux/kernel.h>
  28 #include "device.h"
  29 #include "card.h"
  30 #include "baseband.h"
  31 #include "mac.h"
  32 #include "power.h"
  33 #include "wcmd.h"
  34 #include "rxtx.h"
  35 #include "rf.h"
  36 #include "usbpipe.h"
  37 #include "channel.h"
  38
  39 /*
  40  * define module options
  41  */
  42
  43 /* version information */
  44 #define DRIVER_AUTHOR \
  45         "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>"
  46 MODULE_AUTHOR(DRIVER_AUTHOR);
  47 MODULE_LICENSE("GPL");
  48 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);
  49
  50 #define RX_DESC_DEF0 64
  51 static int vnt_rx_buffers = RX_DESC_DEF0;
  52 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644);
  53 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
  54
  55 #define TX_DESC_DEF0 64
  56 static int vnt_tx_buffers = TX_DESC_DEF0;
  57 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
  58 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
  59
  60 #define RTS_THRESH_DEF     2347
  61 #define FRAG_THRESH_DEF     2346
  62
  63 /* BasebandType[] baseband type selected
  64  * 0: indicate 802.11a type
  65  * 1: indicate 802.11b type
  66  * 2: indicate 802.11g type
  67  */
  68
  69 #define BBP_TYPE_DEF     2
  70
  71 /*
  72  * Static vars definitions
  73  */
  74
  75 static const struct usb_device_id vt6656_table[] = {
  76         {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
  77         {}
  78 };
  79
  80 static void vnt_set_options(struct vnt_private *priv)
  81 {
  82         /* Set number of TX buffers */
  83         if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC)
  84                 priv->num_tx_context = TX_DESC_DEF0;
  85         else
  86                 priv->num_tx_context = vnt_tx_buffers;
  87
  88         /* Set number of RX buffers */
  89         if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC)
  90                 priv->num_rcb = RX_DESC_DEF0;
  91         else
  92                 priv->num_rcb = vnt_rx_buffers;
  93
  94         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
  95         priv->bb_type = BBP_TYPE_DEF;
  96         priv->packet_type = priv->bb_type;
  97         priv->preamble_type = PREAMBLE_LONG;
  98         priv->exist_sw_net_addr = false;
  99 }
 100
 101 static int vnt_download_firmware(struct vnt_private *priv)
 102 {
 103         struct device *dev = &priv->usb->dev;
 104         const struct firmware *fw;
 105         u16 length;
 106         int ii;
 107         int ret = 0;
 108
 109         dev_dbg(dev, "---->Download firmware\n");
 110
 111         ret = request_firmware(&fw, FIRMWARE_NAME, dev);
 112         if (ret) {
 113                 dev_err(dev, "firmware file %s request failed (%d)\n",
 114                         FIRMWARE_NAME, ret);
 115                 goto end;
 116         }
 117
 118         for (ii = 0; ii < fw->size; ii += FIRMWARE_CHUNK_SIZE) {
 119                 length = min_t(int, fw->size - ii, FIRMWARE_CHUNK_SIZE);
 120
 121                 ret = vnt_control_out(priv, 0, 0x1200 + ii, 0x0000, length,
 122                                       fw->data + ii);
 123                 if (ret)
 124                         goto free_fw;
 125
 126                 dev_dbg(dev, "Download firmware...%d %zu\n", ii, fw->size);
 127         }
 128
 129 free_fw:
 130         release_firmware(fw);
 131 end:
 132         return ret;
 133 }
 134
 135 static int vnt_firmware_branch_to_sram(struct vnt_private *priv)
 136 {
 137         dev_dbg(&priv->usb->dev, "---->Branch to Sram\n");
 138
 139         return vnt_control_out(priv, 1, 0x1200, 0x0000, 0, NULL);
 140 }
 141
 142 static int vnt_check_firmware_version(struct vnt_private *priv)
 143 {
 144         int ret = 0;
 145
 146         ret = vnt_control_in(priv, MESSAGE_TYPE_READ, 0,
 147                              MESSAGE_REQUEST_VERSION, 2,
 148                              (u8 *)&priv->firmware_version);
 149         if (ret) {
 150                 dev_dbg(&priv->usb->dev,
 151                         "Could not get firmware version: %d.\n", ret);
 152                 goto end;
 153         }
 154
 155         dev_dbg(&priv->usb->dev, "Firmware Version [%04x]\n",
 156                 priv->firmware_version);
 157
 158         if (priv->firmware_version == 0xFFFF) {
 159                 dev_dbg(&priv->usb->dev, "In Loader.\n");
 160                 ret = -EINVAL;
 161                 goto end;
 162         }
 163
 164         if (priv->firmware_version < FIRMWARE_VERSION) {
 165                 /* branch to loader for download new firmware */
 166                 ret = vnt_firmware_branch_to_sram(priv);
 167                 if (ret) {
 168                         dev_dbg(&priv->usb->dev,
 169                                 "Could not branch to SRAM: %d.\n", ret);
 170                 } else {
 171                         ret = -EINVAL;
 172                 }
 173         }
 174
 175 end:
 176         return ret;
 177 }
 178
 179 /*
 180  * initialization of MAC & BBP registers
 181  */
 182 static int vnt_init_registers(struct vnt_private *priv)
 183 {
 184         int ret;
 185         struct vnt_cmd_card_init *init_cmd = &priv->init_command;
 186         struct vnt_rsp_card_init *init_rsp = &priv->init_response;
 187         u8 antenna;
 188         int ii;
 189         u8 tmp;
 190         u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0;
 191
 192         dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n",
 193                 DEVICE_INIT_COLD, priv->packet_type);
 194
 195         ret = vnt_check_firmware_version(priv);
 196         if (ret) {
 197                 ret = vnt_download_firmware(priv);
 198                 if (ret) {
 199                         dev_dbg(&priv->usb->dev,
 200                                 "Could not download firmware: %d.\n", ret);
 201                         goto end;
 202                 }
 203
 204                 ret = vnt_firmware_branch_to_sram(priv);
 205                 if (ret) {
 206                         dev_dbg(&priv->usb->dev,
 207                                 "Could not branch to SRAM: %d.\n", ret);
 208                         goto end;
 209                 }
 210         }
 211
 212         ret = vnt_vt3184_init(priv);
 213         if (ret) {
 214                 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n");
 215                 goto end;
 216         }
 217
 218         init_cmd->init_class = DEVICE_INIT_COLD;
 219         init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr;
 220         for (ii = 0; ii < ARRAY_SIZE(init_cmd->sw_net_addr); ii++)
 221                 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii];
 222         init_cmd->short_retry_limit = priv->hw->wiphy->retry_short;
 223         init_cmd->long_retry_limit = priv->hw->wiphy->retry_long;
 224
 225         /* issue card_init command to device */
 226         ret = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0,
 227                               sizeof(struct vnt_cmd_card_init),
 228                               (u8 *)init_cmd);
 229         if (ret) {
 230                 dev_dbg(&priv->usb->dev, "Issue Card init fail\n");
 231                 goto end;
 232         }
 233
 234         ret = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0,
 235                              sizeof(struct vnt_rsp_card_init),
 236                              (u8 *)init_rsp);
 237         if (ret) {
 238                 dev_dbg(&priv->usb->dev, "Cardinit request in status fail!\n");
 239                 goto end;
 240         }
 241
 242         /* local ID for AES functions */
 243         ret = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID,
 244                              MESSAGE_REQUEST_MACREG, 1, &priv->local_id);
 245         if (ret)
 246                 goto end;
 247
 248         /* do MACbSoftwareReset in MACvInitialize */
 249
 250         priv->top_ofdm_basic_rate = RATE_24M;
 251         priv->top_cck_basic_rate = RATE_1M;
 252
 253         /* target to IF pin while programming to RF chip */
 254         priv->power = 0xFF;
 255
 256         priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK];
 257         priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG];
 258         /* load power table */
 259         for (ii = 0; ii < ARRAY_SIZE(priv->cck_pwr_tbl); ii++) {
 260                 priv->cck_pwr_tbl[ii] =
 261                         priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL];
 262                 if (priv->cck_pwr_tbl[ii] == 0)
 263                         priv->cck_pwr_tbl[ii] = priv->cck_pwr;
 264
 265                 priv->ofdm_pwr_tbl[ii] =
 266                                 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL];
 267                 if (priv->ofdm_pwr_tbl[ii] == 0)
 268                         priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g;
 269         }
 270
 271         /*
 272          * original zonetype is USA, but custom zonetype is Europe,
 273          * then need to recover 12, 13, 14 channels with 11 channel
 274          */
 275         for (ii = 11; ii < ARRAY_SIZE(priv->cck_pwr_tbl); ii++) {
 276                 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10];
 277                 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10];
 278         }
 279
 280         priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */
 281
 282         /* load OFDM A power table */
 283         for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
 284                 priv->ofdm_a_pwr_tbl[ii] =
 285                         priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL];
 286
 287                 if (priv->ofdm_a_pwr_tbl[ii] == 0)
 288                         priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a;
 289         }
 290
 291         antenna = priv->eeprom[EEP_OFS_ANTENNA];
 292
 293         if (antenna & EEP_ANTINV)
 294                 priv->tx_rx_ant_inv = true;
 295         else
 296                 priv->tx_rx_ant_inv = false;
 297
 298         antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 299
 300         if (antenna == 0) /* if not set default is both */
 301                 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
 302
 303         if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
 304                 priv->tx_antenna_mode = ANT_B;
 305                 priv->rx_antenna_sel = 1;
 306
 307                 if (priv->tx_rx_ant_inv)
 308                         priv->rx_antenna_mode = ANT_A;
 309                 else
 310                         priv->rx_antenna_mode = ANT_B;
 311         } else  {
 312                 priv->rx_antenna_sel = 0;
 313
 314                 if (antenna & EEP_ANTENNA_AUX) {
 315                         priv->tx_antenna_mode = ANT_A;
 316
 317                         if (priv->tx_rx_ant_inv)
 318                                 priv->rx_antenna_mode = ANT_B;
 319                         else
 320                                 priv->rx_antenna_mode = ANT_A;
 321                 } else {
 322                         priv->tx_antenna_mode = ANT_B;
 323
 324                         if (priv->tx_rx_ant_inv)
 325                                 priv->rx_antenna_mode = ANT_A;
 326                         else
 327                                 priv->rx_antenna_mode = ANT_B;
 328                 }
 329         }
 330
 331         /* Set initial antenna mode */
 332         ret = vnt_set_antenna_mode(priv, priv->rx_antenna_mode);
 333         if (ret)
 334                 goto end;
 335
 336         /* default Auto Mode */
 337         priv->bb_type = BB_TYPE_11G;
 338
 339         /* get RFType */
 340         priv->rf_type = init_rsp->rf_type;
 341
 342         /* load vt3266 calibration parameters in EEPROM */
 343         if (priv->rf_type == RF_VT3226D0) {
 344                 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) &&
 345                     (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) {
 346                         calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ];
 347                         calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC];
 348                         calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ];
 349                         if (calib_tx_iq || calib_tx_dc || calib_rx_iq) {
 350                                 /* CR255, enable TX/RX IQ and
 351                                  * DC compensation mode
 352                                  */
 353                                 ret = vnt_control_out_u8(priv,
 354                                                          MESSAGE_REQUEST_BBREG,
 355                                                          0xff, 0x03);
 356                                 if (ret)
 357                                         goto end;
 358
 359                                 /* CR251, TX I/Q Imbalance Calibration */
 360                                 ret = vnt_control_out_u8(priv,
 361                                                          MESSAGE_REQUEST_BBREG,
 362                                                          0xfb, calib_tx_iq);
 363                                 if (ret)
 364                                         goto end;
 365
 366                                 /* CR252, TX DC-Offset Calibration */
 367                                 ret = vnt_control_out_u8(priv,
 368                                                          MESSAGE_REQUEST_BBREG,
 369                                                          0xfC, calib_tx_dc);
 370                                 if (ret)
 371                                         goto end;
 372
 373                                 /* CR253, RX I/Q Imbalance Calibration */
 374                                 ret = vnt_control_out_u8(priv,
 375                                                          MESSAGE_REQUEST_BBREG,
 376                                                          0xfd, calib_rx_iq);
 377                                 if (ret)
 378                                         goto end;
 379                         } else {
 380                                 /* CR255, turn off
 381                                  * BB Calibration compensation
 382                                  */
 383                                 ret = vnt_control_out_u8(priv,
 384                                                          MESSAGE_REQUEST_BBREG,
 385                                                          0xff, 0x0);
 386                                 if (ret)
 387                                         goto end;
 388                         }
 389                 }
 390         }
 391
 392         /* get permanent network address */
 393         memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6);
 394         ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr);
 395
 396         /* if exist SW network address, use it */
 397         dev_dbg(&priv->usb->dev, "Network address = %pM\n",
 398                 priv->current_net_addr);
 399
 400         priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL];
 401
 402         if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) {
 403                 ret = vnt_control_in(priv, MESSAGE_TYPE_READ,
 404                                      MAC_REG_GPIOCTL1, MESSAGE_REQUEST_MACREG,
 405                                      1, &tmp);
 406                 if (ret)
 407                         goto end;
 408
 409                 if ((tmp & GPIO3_DATA) == 0) {
 410                         ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1,
 411                                                   GPIO3_INTMD);
 412                 } else {
 413                         ret = vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1,
 414                                                    GPIO3_INTMD);
 415                 }
 416
 417                 if (ret)
 418                         goto end;
 419         }
 420
 421         ret = vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38);
 422         if (ret)
 423                 goto end;
 424
 425         ret = vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 426         if (ret)
 427                 goto end;
 428
 429         ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, BIT(0));
 430         if (ret)
 431                 goto end;
 432
 433         ret = vnt_radio_power_on(priv);
 434         if (ret)
 435                 goto end;
 436
 437         dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n");
 438
 439 end:
 440         return ret;
 441 }
 442
 443 static void vnt_free_tx_bufs(struct vnt_private *priv)
 444 {
 445         struct vnt_usb_send_context *tx_context;
 446         int ii;
 447
 448         usb_kill_anchored_urbs(&priv->tx_submitted);
 449
 450         for (ii = 0; ii < priv->num_tx_context; ii++) {
 451                 tx_context = priv->tx_context[ii];
 452                 if (!tx_context)
 453                         continue;
 454
 455                 kfree(tx_context);
 456         }
 457 }
 458
 459 static void vnt_free_rx_bufs(struct vnt_private *priv)
 460 {
 461         struct vnt_rcb *rcb;
 462         int ii;
 463
 464         for (ii = 0; ii < priv->num_rcb; ii++) {
 465                 rcb = priv->rcb[ii];
 466                 if (!rcb)
 467                         continue;
 468
 469                 /* deallocate URBs */
 470                 if (rcb->urb) {
 471                         usb_kill_urb(rcb->urb);
 472                         usb_free_urb(rcb->urb);
 473                 }
 474
 475                 /* deallocate skb */
 476                 if (rcb->skb)
 477                         dev_kfree_skb(rcb->skb);
 478
 479                 kfree(rcb);
 480         }
 481 }
 482
 483 static void vnt_free_int_bufs(struct vnt_private *priv)
 484 {
 485         kfree(priv->int_buf.data_buf);
 486 }
 487
 488 static int vnt_alloc_bufs(struct vnt_private *priv)
 489 {
 490         int ret;
 491         struct vnt_usb_send_context *tx_context;
 492         struct vnt_rcb *rcb;
 493         int ii;
 494
 495         init_usb_anchor(&priv->tx_submitted);
 496
 497         for (ii = 0; ii < priv->num_tx_context; ii++) {
 498                 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL);
 499                 if (!tx_context) {
 500                         ret = -ENOMEM;
 501                         goto free_tx;
 502                 }
 503
 504                 priv->tx_context[ii] = tx_context;
 505                 tx_context->priv = priv;
 506                 tx_context->pkt_no = ii;
 507                 tx_context->in_use = false;
 508         }
 509
 510         for (ii = 0; ii < priv->num_rcb; ii++) {
 511                 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL);
 512                 if (!priv->rcb[ii]) {
 513                         ret = -ENOMEM;
 514                         goto free_rx_tx;
 515                 }
 516
 517                 rcb = priv->rcb[ii];
 518
 519                 rcb->priv = priv;
 520
 521                 /* allocate URBs */
 522                 rcb->urb = usb_alloc_urb(0, GFP_KERNEL);
 523                 if (!rcb->urb) {
 524                         ret = -ENOMEM;
 525                         goto free_rx_tx;
 526                 }
 527
 528                 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
 529                 if (!rcb->skb) {
 530                         ret = -ENOMEM;
 531                         goto free_rx_tx;
 532                 }
 533                 /* submit rx urb */
 534                 ret = vnt_submit_rx_urb(priv, rcb);
 535                 if (ret)
 536                         goto free_rx_tx;
 537         }
 538
 539         priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL);
 540         if (!priv->interrupt_urb) {
 541                 ret = -ENOMEM;
 542                 goto free_rx_tx;
 543         }
 544
 545         priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL);
 546         if (!priv->int_buf.data_buf) {
 547                 ret = -ENOMEM;
 548                 goto free_rx_tx_urb;
 549         }
 550
 551         return 0;
 552
 553 free_rx_tx_urb:
 554         usb_free_urb(priv->interrupt_urb);
 555 free_rx_tx:
 556         vnt_free_rx_bufs(priv);
 557 free_tx:
 558         vnt_free_tx_bufs(priv);
 559         return ret;
 560 }
 561
 562 static void vnt_tx_80211(struct ieee80211_hw *hw,
 563                          struct ieee80211_tx_control *control,
 564                          struct sk_buff *skb)
 565 {
 566         struct vnt_private *priv = hw->priv;
 567
 568         if (vnt_tx_packet(priv, skb))
 569                 ieee80211_free_txskb(hw, skb);
 570 }
 571
 572 static int vnt_start(struct ieee80211_hw *hw)
 573 {
 574         int ret;
 575         struct vnt_private *priv = hw->priv;
 576
 577         priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS;
 578
 579         ret = vnt_alloc_bufs(priv);
 580         if (ret) {
 581                 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n");
 582                 goto err;
 583         }
 584
 585         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 586
 587         ret = vnt_init_registers(priv);
 588         if (ret) {
 589                 dev_dbg(&priv->usb->dev, " init register fail\n");
 590                 goto free_all;
 591         }
 592
 593         ret = vnt_key_init_table(priv);
 594         if (ret)
 595                 goto free_all;
 596
 597         priv->int_interval = 1;  /* bInterval is set to 1 */
 598
 599         ret = vnt_start_interrupt_urb(priv);
 600         if (ret)
 601                 goto free_all;
 602
 603         ieee80211_wake_queues(hw);
 604
 605         return 0;
 606
 607 free_all:
 608         vnt_free_rx_bufs(priv);
 609         vnt_free_tx_bufs(priv);
 610         vnt_free_int_bufs(priv);
 611
 612         usb_kill_urb(priv->interrupt_urb);
 613         usb_free_urb(priv->interrupt_urb);
 614 err:
 615         return ret;
 616 }
 617
 618 static void vnt_stop(struct ieee80211_hw *hw)
 619 {
 620         struct vnt_private *priv = hw->priv;
 621         int i;
 622
 623         if (!priv)
 624                 return;
 625
 626         for (i = 0; i < MAX_KEY_TABLE; i++)
 627                 vnt_mac_disable_keyentry(priv, i);
 628
 629         /* clear all keys */
 630         priv->key_entry_inuse = 0;
 631
 632         if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags))
 633                 vnt_mac_shutdown(priv);
 634
 635         ieee80211_stop_queues(hw);
 636
 637         set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
 638
 639         cancel_delayed_work_sync(&priv->run_command_work);
 640
 641         priv->cmd_running = false;
 642
 643         vnt_free_tx_bufs(priv);
 644         vnt_free_rx_bufs(priv);
 645         vnt_free_int_bufs(priv);
 646
 647         usb_kill_urb(priv->interrupt_urb);
 648         usb_free_urb(priv->interrupt_urb);
 649 }
 650
 651 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 652 {
 653         struct vnt_private *priv = hw->priv;
 654
 655         priv->vif = vif;
 656
 657         switch (vif->type) {
 658         case NL80211_IFTYPE_STATION:
 659                 break;
 660         case NL80211_IFTYPE_ADHOC:
 661                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 662
 663                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 664
 665                 break;
 666         case NL80211_IFTYPE_AP:
 667                 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST);
 668
 669                 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 670
 671                 break;
 672         default:
 673                 return -EOPNOTSUPP;
 674         }
 675
 676         priv->op_mode = vif->type;
 677
 678         /* LED blink on TX */
 679         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER);
 680
 681         return 0;
 682 }
 683
 684 static void vnt_remove_interface(struct ieee80211_hw *hw,
 685                                  struct ieee80211_vif *vif)
 686 {
 687         struct vnt_private *priv = hw->priv;
 688
 689         switch (vif->type) {
 690         case NL80211_IFTYPE_STATION:
 691                 break;
 692         case NL80211_IFTYPE_ADHOC:
 693                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 694                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 695                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC);
 696                 break;
 697         case NL80211_IFTYPE_AP:
 698                 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 699                 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 700                 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP);
 701                 break;
 702         default:
 703                 break;
 704         }
 705
 706         vnt_radio_power_off(priv);
 707
 708         priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
 709
 710         /* LED slow blink */
 711         vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW);
 712 }
 713
 714 static int vnt_config(struct ieee80211_hw *hw, u32 changed)
 715 {
 716         struct vnt_private *priv = hw->priv;
 717         struct ieee80211_conf *conf = &hw->conf;
 718
 719         if (changed & IEEE80211_CONF_CHANGE_PS) {
 720                 if (conf->flags & IEEE80211_CONF_PS)
 721                         vnt_enable_power_saving(priv, conf->listen_interval);
 722                 else
 723                         vnt_disable_power_saving(priv);
 724         }
 725
 726         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
 727             (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
 728                 vnt_set_channel(priv, conf->chandef.chan->hw_value);
 729
 730                 if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
 731                         priv->bb_type = BB_TYPE_11A;
 732                 else
 733                         priv->bb_type = BB_TYPE_11G;
 734         }
 735
 736         if (changed & IEEE80211_CONF_CHANGE_POWER)
 737                 vnt_rf_setpower(priv, conf->chandef.chan);
 738
 739         if (conf->flags & (IEEE80211_CONF_OFFCHANNEL | IEEE80211_CONF_IDLE))
 740                 /* Set max sensitivity*/
 741                 vnt_update_pre_ed_threshold(priv, true);
 742         else
 743                 vnt_update_pre_ed_threshold(priv, false);
 744
 745         return 0;
 746 }
 747
 748 static void vnt_bss_info_changed(struct ieee80211_hw *hw,
 749                                  struct ieee80211_vif *vif,
 750                                  struct ieee80211_bss_conf *conf, u32 changed)
 751 {
 752         struct vnt_private *priv = hw->priv;
 753
 754         priv->current_aid = conf->aid;
 755
 756         if (changed & BSS_CHANGED_BSSID && conf->bssid)
 757                 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid);
 758
 759         if (changed & BSS_CHANGED_BASIC_RATES) {
 760                 priv->basic_rates = conf->basic_rates;
 761
 762                 vnt_update_top_rates(priv);
 763
 764                 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates);
 765         }
 766
 767         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
 768                 if (conf->use_short_preamble) {
 769                         vnt_mac_enable_barker_preamble_mode(priv);
 770                         priv->preamble_type = PREAMBLE_SHORT;
 771                 } else {
 772                         vnt_mac_disable_barker_preamble_mode(priv);
 773                         priv->preamble_type = PREAMBLE_LONG;
 774                 }
 775         }
 776
 777         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 778                 if (conf->use_cts_prot)
 779                         vnt_mac_enable_protect_mode(priv);
 780                 else
 781                         vnt_mac_disable_protect_mode(priv);
 782         }
 783
 784         if (changed & BSS_CHANGED_ERP_SLOT) {
 785                 if (conf->use_short_slot)
 786                         priv->short_slot_time = true;
 787                 else
 788                         priv->short_slot_time = false;
 789
 790                 vnt_set_short_slot_time(priv);
 791                 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);
 792         }
 793
 794         if (changed & (BSS_CHANGED_BASIC_RATES | BSS_CHANGED_ERP_PREAMBLE |
 795                        BSS_CHANGED_ERP_SLOT))
 796                 vnt_set_bss_mode(priv);
 797
 798         if (changed & (BSS_CHANGED_TXPOWER | BSS_CHANGED_BANDWIDTH))
 799                 vnt_rf_setpower(priv, conf->chandef.chan);
 800
 801         if (changed & BSS_CHANGED_BEACON_ENABLED) {
 802                 dev_dbg(&priv->usb->dev,
 803                         "Beacon enable %d\n", conf->enable_beacon);
 804
 805                 if (conf->enable_beacon) {
 806                         vnt_beacon_enable(priv, vif, conf);
 807
 808                         vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 809                 } else {
 810                         vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX);
 811                 }
 812         }
 813
 814         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
 815             priv->op_mode != NL80211_IFTYPE_AP) {
 816                 if (conf->assoc && conf->beacon_rate) {
 817                         u16 ps_beacon_int = conf->beacon_int;
 818
 819                         if (conf->dtim_period)
 820                                 ps_beacon_int *= conf->dtim_period;
 821                         else if (hw->conf.listen_interval)
 822                                 ps_beacon_int *= hw->conf.listen_interval;
 823
 824                         vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL,
 825                                             TFTCTL_TSFCNTREN);
 826
 827                         vnt_mac_set_beacon_interval(priv, ps_beacon_int);
 828
 829                         vnt_reset_next_tbtt(priv, conf->beacon_int);
 830
 831                         vnt_adjust_tsf(priv, conf->beacon_rate->hw_value,
 832                                        conf->sync_tsf, priv->current_tsf);
 833
 834                         vnt_update_next_tbtt(priv,
 835                                              conf->sync_tsf, ps_beacon_int);
 836                 } else {
 837                         vnt_clear_current_tsf(priv);
 838
 839                         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL,
 840                                              TFTCTL_TSFCNTREN);
 841                 }
 842         }
 843 }
 844
 845 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
 846                                  struct netdev_hw_addr_list *mc_list)
 847 {
 848         struct vnt_private *priv = hw->priv;
 849         struct netdev_hw_addr *ha;
 850         u64 mc_filter = 0;
 851         u32 bit_nr;
 852
 853         netdev_hw_addr_list_for_each(ha, mc_list) {
 854                 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
 855                 mc_filter |= BIT_ULL(bit_nr);
 856         }
 857
 858         priv->mc_list_count = mc_list->count;
 859
 860         return mc_filter;
 861 }
 862
 863 static void vnt_configure(struct ieee80211_hw *hw,
 864                           unsigned int changed_flags,
 865                           unsigned int *total_flags, u64 multicast)
 866 {
 867         struct vnt_private *priv = hw->priv;
 868         u8 rx_mode = 0;
 869
 870         *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 871
 872         vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 873                        MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 874
 875         dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 876
 877         if (changed_flags & FIF_ALLMULTI) {
 878                 if (*total_flags & FIF_ALLMULTI) {
 879                         if (priv->mc_list_count > 2)
 880                                 vnt_mac_set_filter(priv, ~0);
 881                         else
 882                                 vnt_mac_set_filter(priv, multicast);
 883
 884                         rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
 885                 } else {
 886                         rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
 887                 }
 888         }
 889
 890         if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
 891                 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
 892                         rx_mode &= ~RCR_BSSID;
 893                 else
 894                         rx_mode |= RCR_BSSID;
 895         }
 896
 897         vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode);
 898
 899         dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode);
 900 }
 901
 902 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 903                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 904                        struct ieee80211_key_conf *key)
 905 {
 906         struct vnt_private *priv = hw->priv;
 907
 908         switch (cmd) {
 909         case SET_KEY:
 910                 return vnt_set_keys(hw, sta, vif, key);
 911         case DISABLE_KEY:
 912                 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse)) {
 913                         clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
 914
 915                         vnt_mac_disable_keyentry(priv, key->hw_key_idx);
 916                 }
 917                 break;
 918
 919         default:
 920                 break;
 921         }
 922
 923         return 0;
 924 }
 925
 926 static int vnt_get_stats(struct ieee80211_hw *hw,
 927                          struct ieee80211_low_level_stats *stats)
 928 {
 929         struct vnt_private *priv = hw->priv;
 930
 931         memcpy(stats, &priv->low_stats, sizeof(*stats));
 932
 933         return 0;
 934 }
 935
 936 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 937 {
 938         struct vnt_private *priv = hw->priv;
 939
 940         return priv->current_tsf;
 941 }
 942
 943 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 944                         u64 tsf)
 945 {
 946         struct vnt_private *priv = hw->priv;
 947
 948         vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int);
 949 }
 950
 951 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 952 {
 953         struct vnt_private *priv = hw->priv;
 954
 955         vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
 956
 957         vnt_clear_current_tsf(priv);
 958 }
 959
 960 static const struct ieee80211_ops vnt_mac_ops = {
 961         .tx                     = vnt_tx_80211,
 962         .start                  = vnt_start,
 963         .stop                   = vnt_stop,
 964         .add_interface          = vnt_add_interface,
 965         .remove_interface       = vnt_remove_interface,
 966         .config                 = vnt_config,
 967         .bss_info_changed       = vnt_bss_info_changed,
 968         .prepare_multicast      = vnt_prepare_multicast,
 969         .configure_filter       = vnt_configure,
 970         .set_key                = vnt_set_key,
 971         .get_stats              = vnt_get_stats,
 972         .get_tsf                = vnt_get_tsf,
 973         .set_tsf                = vnt_set_tsf,
 974         .reset_tsf              = vnt_reset_tsf,
 975 };
 976
 977 int vnt_init(struct vnt_private *priv)
 978 {
 979         if (vnt_init_registers(priv))
 980                 return -EAGAIN;
 981
 982         SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr);
 983
 984         vnt_init_bands(priv);
 985
 986         if (ieee80211_register_hw(priv->hw))
 987                 return -ENODEV;
 988
 989         priv->mac_hw = true;
 990
 991         vnt_radio_power_off(priv);
 992
 993         return 0;
 994 }
 995
 996 static int
 997 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id)
 998 {
 999         struct usb_device *udev;
1000         struct vnt_private *priv;
1001         struct ieee80211_hw *hw;
1002         struct wiphy *wiphy;
1003         int rc;
1004
1005         udev = usb_get_dev(interface_to_usbdev(intf));
1006
1007         dev_notice(&udev->dev, "%s Ver. %s\n",
1008                    DEVICE_FULL_DRV_NAM, DEVICE_VERSION);
1009         dev_notice(&udev->dev,
1010                    "Copyright (c) 2004 VIA Networking Technologies, Inc.\n");
1011
1012         hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops);
1013         if (!hw) {
1014                 dev_err(&udev->dev, "could not register ieee80211_hw\n");
1015                 rc = -ENOMEM;
1016                 goto err_nomem;
1017         }
1018
1019         priv = hw->priv;
1020         priv->hw = hw;
1021         priv->usb = udev;
1022         priv->intf = intf;
1023
1024         vnt_set_options(priv);
1025
1026         spin_lock_init(&priv->lock);
1027         mutex_init(&priv->usb_lock);
1028
1029         INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command);
1030
1031         usb_set_intfdata(intf, priv);
1032
1033         wiphy = priv->hw->wiphy;
1034
1035         wiphy->frag_threshold = FRAG_THRESH_DEF;
1036         wiphy->rts_threshold = RTS_THRESH_DEF;
1037         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1038                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);
1039
1040         ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
1041         ieee80211_hw_set(priv->hw, SIGNAL_DBM);
1042         ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
1043         ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
1044         ieee80211_hw_set(priv->hw, SUPPORTS_PS);
1045         ieee80211_hw_set(priv->hw, PS_NULLFUNC_STACK);
1046
1047         priv->hw->extra_tx_headroom =
1048                 sizeof(struct vnt_tx_buffer) + sizeof(struct vnt_tx_usb_header);
1049         priv->hw->max_signal = 100;
1050
1051         SET_IEEE80211_DEV(priv->hw, &intf->dev);
1052
1053         rc = usb_reset_device(priv->usb);
1054         if (rc)
1055                 dev_warn(&priv->usb->dev,
1056                          "%s reset fail status=%d\n", __func__, rc);
1057
1058         clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags);
1059         vnt_reset_command_timer(priv);
1060
1061         vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211);
1062
1063         return 0;
1064
1065 err_nomem:
1066         usb_put_dev(udev);
1067
1068         return rc;
1069 }
1070
1071 static void vt6656_disconnect(struct usb_interface *intf)
1072 {
1073         struct vnt_private *priv = usb_get_intfdata(intf);
1074
1075         if (!priv)
1076                 return;
1077
1078         if (priv->mac_hw)
1079                 ieee80211_unregister_hw(priv->hw);
1080
1081         usb_set_intfdata(intf, NULL);
1082         usb_put_dev(interface_to_usbdev(intf));
1083
1084         set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags);
1085
1086         ieee80211_free_hw(priv->hw);
1087 }
1088
1089 #ifdef CONFIG_PM
1090
1091 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message)
1092 {
1093         return 0;
1094 }
1095
1096 static int vt6656_resume(struct usb_interface *intf)
1097 {
1098         return 0;
1099 }
1100
1101 #endif /* CONFIG_PM */
1102
1103 MODULE_DEVICE_TABLE(usb, vt6656_table);
1104
1105 static struct usb_driver vt6656_driver = {
1106         .name =         DEVICE_NAME,
1107         .probe =        vt6656_probe,
1108         .disconnect =   vt6656_disconnect,
1109         .id_table =     vt6656_table,
1110 #ifdef CONFIG_PM
1111         .suspend = vt6656_suspend,
1112         .resume = vt6656_resume,
1113 #endif /* CONFIG_PM */
1114 };
1115
1116 module_usb_driver(vt6656_driver);
1117
1118 MODULE_FIRMWARE(FIRMWARE_NAME);