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/etherdevice.h> 25 #include <linux/file.h> 26 #include "device.h" 27 #include "card.h" 28 #include "baseband.h" 29 #include "mac.h" 30 #include "power.h" 31 #include "wcmd.h" 32 #include "rxtx.h" 33 #include "dpc.h" 34 #include "rf.h" 35 #include "firmware.h" 36 #include "usbpipe.h" 37 #include "channel.h" 38 #include "int.h" 39 40 /* 41 * define module options 42 */ 43 44 /* version information */ 45 #define DRIVER_AUTHOR \ 46 "VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>" 47 MODULE_AUTHOR(DRIVER_AUTHOR); 48 MODULE_LICENSE("GPL"); 49 MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM); 50 51 #define RX_DESC_DEF0 64 52 static int vnt_rx_buffers = RX_DESC_DEF0; 53 module_param_named(rx_buffers, vnt_rx_buffers, int, 0644); 54 MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers"); 55 56 #define TX_DESC_DEF0 64 57 static int vnt_tx_buffers = TX_DESC_DEF0; 58 module_param_named(tx_buffers, vnt_tx_buffers, int, 0644); 59 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers"); 60 61 #define RTS_THRESH_DEF 2347 62 #define FRAG_THRESH_DEF 2346 63 #define SHORT_RETRY_DEF 8 64 #define LONG_RETRY_DEF 4 65 66 /* BasebandType[] baseband type selected 67 * 0: indicate 802.11a type 68 * 1: indicate 802.11b type 69 * 2: indicate 802.11g type 70 */ 71 72 #define BBP_TYPE_DEF 2 73 74 /* 75 * Static vars definitions 76 */ 77 78 static const struct usb_device_id vt6656_table[] = { 79 {USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)}, 80 {} 81 }; 82 83 static void vnt_set_options(struct vnt_private *priv) 84 { 85 /* Set number of TX buffers */ 86 if (vnt_tx_buffers < CB_MIN_TX_DESC || vnt_tx_buffers > CB_MAX_TX_DESC) 87 priv->num_tx_context = TX_DESC_DEF0; 88 else 89 priv->num_tx_context = vnt_tx_buffers; 90 91 /* Set number of RX buffers */ 92 if (vnt_rx_buffers < CB_MIN_RX_DESC || vnt_rx_buffers > CB_MAX_RX_DESC) 93 priv->num_rcb = RX_DESC_DEF0; 94 else 95 priv->num_rcb = vnt_rx_buffers; 96 97 priv->short_retry_limit = SHORT_RETRY_DEF; 98 priv->long_retry_limit = LONG_RETRY_DEF; 99 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED; 100 priv->bb_type = BBP_TYPE_DEF; 101 priv->packet_type = priv->bb_type; 102 priv->auto_fb_ctrl = AUTO_FB_0; 103 priv->preamble_type = 0; 104 priv->exist_sw_net_addr = false; 105 } 106 107 /* 108 * initialization of MAC & BBP registers 109 */ 110 static int vnt_init_registers(struct vnt_private *priv) 111 { 112 struct vnt_cmd_card_init *init_cmd = &priv->init_command; 113 struct vnt_rsp_card_init *init_rsp = &priv->init_response; 114 u8 antenna; 115 int ii; 116 int status = STATUS_SUCCESS; 117 u8 tmp; 118 u8 calib_tx_iq = 0, calib_tx_dc = 0, calib_rx_iq = 0; 119 120 dev_dbg(&priv->usb->dev, "---->INIbInitAdapter. [%d][%d]\n", 121 DEVICE_INIT_COLD, priv->packet_type); 122 123 if (!vnt_check_firmware_version(priv)) { 124 if (vnt_download_firmware(priv) == true) { 125 if (vnt_firmware_branch_to_sram(priv) == false) { 126 dev_dbg(&priv->usb->dev, 127 " vnt_firmware_branch_to_sram fail\n"); 128 return false; 129 } 130 } else { 131 dev_dbg(&priv->usb->dev, "FIRMWAREbDownload fail\n"); 132 return false; 133 } 134 } 135 136 if (!vnt_vt3184_init(priv)) { 137 dev_dbg(&priv->usb->dev, "vnt_vt3184_init fail\n"); 138 return false; 139 } 140 141 init_cmd->init_class = DEVICE_INIT_COLD; 142 init_cmd->exist_sw_net_addr = priv->exist_sw_net_addr; 143 for (ii = 0; ii < 6; ii++) 144 init_cmd->sw_net_addr[ii] = priv->current_net_addr[ii]; 145 init_cmd->short_retry_limit = priv->short_retry_limit; 146 init_cmd->long_retry_limit = priv->long_retry_limit; 147 148 /* issue card_init command to device */ 149 status = vnt_control_out(priv, MESSAGE_TYPE_CARDINIT, 0, 0, 150 sizeof(struct vnt_cmd_card_init), 151 (u8 *)init_cmd); 152 if (status != STATUS_SUCCESS) { 153 dev_dbg(&priv->usb->dev, "Issue Card init fail\n"); 154 return false; 155 } 156 157 status = vnt_control_in(priv, MESSAGE_TYPE_INIT_RSP, 0, 0, 158 sizeof(struct vnt_rsp_card_init), 159 (u8 *)init_rsp); 160 if (status != STATUS_SUCCESS) { 161 dev_dbg(&priv->usb->dev, 162 "Cardinit request in status fail!\n"); 163 return false; 164 } 165 166 /* local ID for AES functions */ 167 status = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_LOCALID, 168 MESSAGE_REQUEST_MACREG, 1, &priv->local_id); 169 if (status != STATUS_SUCCESS) 170 return false; 171 172 /* do MACbSoftwareReset in MACvInitialize */ 173 174 priv->top_ofdm_basic_rate = RATE_24M; 175 priv->top_cck_basic_rate = RATE_1M; 176 177 /* target to IF pin while programming to RF chip */ 178 priv->power = 0xFF; 179 180 priv->cck_pwr = priv->eeprom[EEP_OFS_PWR_CCK]; 181 priv->ofdm_pwr_g = priv->eeprom[EEP_OFS_PWR_OFDMG]; 182 /* load power table */ 183 for (ii = 0; ii < 14; ii++) { 184 priv->cck_pwr_tbl[ii] = 185 priv->eeprom[ii + EEP_OFS_CCK_PWR_TBL]; 186 if (priv->cck_pwr_tbl[ii] == 0) 187 priv->cck_pwr_tbl[ii] = priv->cck_pwr; 188 189 priv->ofdm_pwr_tbl[ii] = 190 priv->eeprom[ii + EEP_OFS_OFDM_PWR_TBL]; 191 if (priv->ofdm_pwr_tbl[ii] == 0) 192 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_g; 193 } 194 195 /* 196 * original zonetype is USA, but custom zonetype is Europe, 197 * then need to recover 12, 13, 14 channels with 11 channel 198 */ 199 for (ii = 11; ii < 14; ii++) { 200 priv->cck_pwr_tbl[ii] = priv->cck_pwr_tbl[10]; 201 priv->ofdm_pwr_tbl[ii] = priv->ofdm_pwr_tbl[10]; 202 } 203 204 priv->ofdm_pwr_a = 0x34; /* same as RFbMA2829SelectChannel */ 205 206 /* load OFDM A power table */ 207 for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) { 208 priv->ofdm_a_pwr_tbl[ii] = 209 priv->eeprom[ii + EEP_OFS_OFDMA_PWR_TBL]; 210 211 if (priv->ofdm_a_pwr_tbl[ii] == 0) 212 priv->ofdm_a_pwr_tbl[ii] = priv->ofdm_pwr_a; 213 } 214 215 antenna = priv->eeprom[EEP_OFS_ANTENNA]; 216 217 if (antenna & EEP_ANTINV) 218 priv->tx_rx_ant_inv = true; 219 else 220 priv->tx_rx_ant_inv = false; 221 222 antenna &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN); 223 224 if (antenna == 0) /* if not set default is both */ 225 antenna = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN); 226 227 if (antenna == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) { 228 priv->tx_antenna_mode = ANT_B; 229 priv->rx_antenna_sel = 1; 230 231 if (priv->tx_rx_ant_inv) 232 priv->rx_antenna_mode = ANT_A; 233 else 234 priv->rx_antenna_mode = ANT_B; 235 } else { 236 priv->rx_antenna_sel = 0; 237 238 if (antenna & EEP_ANTENNA_AUX) { 239 priv->tx_antenna_mode = ANT_A; 240 241 if (priv->tx_rx_ant_inv) 242 priv->rx_antenna_mode = ANT_B; 243 else 244 priv->rx_antenna_mode = ANT_A; 245 } else { 246 priv->tx_antenna_mode = ANT_B; 247 248 if (priv->tx_rx_ant_inv) 249 priv->rx_antenna_mode = ANT_A; 250 else 251 priv->rx_antenna_mode = ANT_B; 252 } 253 } 254 255 /* Set initial antenna mode */ 256 vnt_set_antenna_mode(priv, priv->rx_antenna_mode); 257 258 /* get Auto Fall Back type */ 259 priv->auto_fb_ctrl = AUTO_FB_0; 260 261 /* default Auto Mode */ 262 priv->bb_type = BB_TYPE_11G; 263 264 /* get RFType */ 265 priv->rf_type = init_rsp->rf_type; 266 267 /* load vt3266 calibration parameters in EEPROM */ 268 if (priv->rf_type == RF_VT3226D0) { 269 if ((priv->eeprom[EEP_OFS_MAJOR_VER] == 0x1) && 270 (priv->eeprom[EEP_OFS_MINOR_VER] >= 0x4)) { 271 calib_tx_iq = priv->eeprom[EEP_OFS_CALIB_TX_IQ]; 272 calib_tx_dc = priv->eeprom[EEP_OFS_CALIB_TX_DC]; 273 calib_rx_iq = priv->eeprom[EEP_OFS_CALIB_RX_IQ]; 274 if (calib_tx_iq || calib_tx_dc || calib_rx_iq) { 275 /* CR255, enable TX/RX IQ and 276 * DC compensation mode 277 */ 278 vnt_control_out_u8(priv, 279 MESSAGE_REQUEST_BBREG, 280 0xff, 281 0x03); 282 /* CR251, TX I/Q Imbalance Calibration */ 283 vnt_control_out_u8(priv, 284 MESSAGE_REQUEST_BBREG, 285 0xfb, 286 calib_tx_iq); 287 /* CR252, TX DC-Offset Calibration */ 288 vnt_control_out_u8(priv, 289 MESSAGE_REQUEST_BBREG, 290 0xfC, 291 calib_tx_dc); 292 /* CR253, RX I/Q Imbalance Calibration */ 293 vnt_control_out_u8(priv, 294 MESSAGE_REQUEST_BBREG, 295 0xfd, 296 calib_rx_iq); 297 } else { 298 /* CR255, turn off 299 * BB Calibration compensation 300 */ 301 vnt_control_out_u8(priv, 302 MESSAGE_REQUEST_BBREG, 303 0xff, 304 0x0); 305 } 306 } 307 } 308 309 /* get permanent network address */ 310 memcpy(priv->permanent_net_addr, init_rsp->net_addr, 6); 311 ether_addr_copy(priv->current_net_addr, priv->permanent_net_addr); 312 313 /* if exist SW network address, use it */ 314 dev_dbg(&priv->usb->dev, "Network address = %pM\n", 315 priv->current_net_addr); 316 317 /* 318 * set BB and packet type at the same time 319 * set Short Slot Time, xIFS, and RSPINF 320 */ 321 if (priv->bb_type == BB_TYPE_11A) 322 priv->short_slot_time = true; 323 else 324 priv->short_slot_time = false; 325 326 vnt_set_short_slot_time(priv); 327 328 priv->radio_ctl = priv->eeprom[EEP_OFS_RADIOCTL]; 329 330 if ((priv->radio_ctl & EEP_RADIOCTL_ENABLE) != 0) { 331 status = vnt_control_in(priv, MESSAGE_TYPE_READ, 332 MAC_REG_GPIOCTL1, 333 MESSAGE_REQUEST_MACREG, 1, &tmp); 334 335 if (status != STATUS_SUCCESS) 336 return false; 337 338 if ((tmp & GPIO3_DATA) == 0) 339 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, 340 GPIO3_INTMD); 341 else 342 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, 343 GPIO3_INTMD); 344 } 345 346 vnt_mac_set_led(priv, LEDSTS_TMLEN, 0x38); 347 348 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW); 349 350 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL0, 0x01); 351 352 vnt_radio_power_on(priv); 353 354 dev_dbg(&priv->usb->dev, "<----INIbInitAdapter Exit\n"); 355 356 return true; 357 } 358 359 static void vnt_free_tx_bufs(struct vnt_private *priv) 360 { 361 struct vnt_usb_send_context *tx_context; 362 int ii; 363 364 for (ii = 0; ii < priv->num_tx_context; ii++) { 365 tx_context = priv->tx_context[ii]; 366 /* deallocate URBs */ 367 if (tx_context->urb) { 368 usb_kill_urb(tx_context->urb); 369 usb_free_urb(tx_context->urb); 370 } 371 372 kfree(tx_context); 373 } 374 } 375 376 static void vnt_free_rx_bufs(struct vnt_private *priv) 377 { 378 struct vnt_rcb *rcb; 379 int ii; 380 381 for (ii = 0; ii < priv->num_rcb; ii++) { 382 rcb = priv->rcb[ii]; 383 if (!rcb) 384 continue; 385 386 /* deallocate URBs */ 387 if (rcb->urb) { 388 usb_kill_urb(rcb->urb); 389 usb_free_urb(rcb->urb); 390 } 391 392 /* deallocate skb */ 393 if (rcb->skb) 394 dev_kfree_skb(rcb->skb); 395 396 kfree(rcb); 397 } 398 } 399 400 static void vnt_free_int_bufs(struct vnt_private *priv) 401 { 402 kfree(priv->int_buf.data_buf); 403 } 404 405 static bool vnt_alloc_bufs(struct vnt_private *priv) 406 { 407 struct vnt_usb_send_context *tx_context; 408 struct vnt_rcb *rcb; 409 int ii; 410 411 for (ii = 0; ii < priv->num_tx_context; ii++) { 412 tx_context = kmalloc(sizeof(*tx_context), GFP_KERNEL); 413 if (!tx_context) 414 goto free_tx; 415 416 priv->tx_context[ii] = tx_context; 417 tx_context->priv = priv; 418 tx_context->pkt_no = ii; 419 420 /* allocate URBs */ 421 tx_context->urb = usb_alloc_urb(0, GFP_KERNEL); 422 if (!tx_context->urb) 423 goto free_tx; 424 425 tx_context->in_use = false; 426 } 427 428 for (ii = 0; ii < priv->num_rcb; ii++) { 429 priv->rcb[ii] = kzalloc(sizeof(*priv->rcb[ii]), GFP_KERNEL); 430 if (!priv->rcb[ii]) 431 goto free_rx_tx; 432 433 rcb = priv->rcb[ii]; 434 435 rcb->priv = priv; 436 437 /* allocate URBs */ 438 rcb->urb = usb_alloc_urb(0, GFP_KERNEL); 439 if (!rcb->urb) 440 goto free_rx_tx; 441 442 rcb->skb = dev_alloc_skb(priv->rx_buf_sz); 443 if (!rcb->skb) 444 goto free_rx_tx; 445 446 rcb->in_use = false; 447 448 /* submit rx urb */ 449 if (vnt_submit_rx_urb(priv, rcb)) 450 goto free_rx_tx; 451 } 452 453 priv->interrupt_urb = usb_alloc_urb(0, GFP_KERNEL); 454 if (!priv->interrupt_urb) 455 goto free_rx_tx; 456 457 priv->int_buf.data_buf = kmalloc(MAX_INTERRUPT_SIZE, GFP_KERNEL); 458 if (!priv->int_buf.data_buf) { 459 usb_free_urb(priv->interrupt_urb); 460 goto free_rx_tx; 461 } 462 463 return true; 464 465 free_rx_tx: 466 vnt_free_rx_bufs(priv); 467 468 free_tx: 469 vnt_free_tx_bufs(priv); 470 471 return false; 472 } 473 474 static void vnt_tx_80211(struct ieee80211_hw *hw, 475 struct ieee80211_tx_control *control, 476 struct sk_buff *skb) 477 { 478 struct vnt_private *priv = hw->priv; 479 480 if (vnt_tx_packet(priv, skb)) 481 ieee80211_free_txskb(hw, skb); 482 } 483 484 static int vnt_start(struct ieee80211_hw *hw) 485 { 486 struct vnt_private *priv = hw->priv; 487 488 priv->rx_buf_sz = MAX_TOTAL_SIZE_WITH_ALL_HEADERS; 489 490 if (!vnt_alloc_bufs(priv)) { 491 dev_dbg(&priv->usb->dev, "vnt_alloc_bufs fail...\n"); 492 return -ENOMEM; 493 } 494 495 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags); 496 497 if (vnt_init_registers(priv) == false) { 498 dev_dbg(&priv->usb->dev, " init register fail\n"); 499 goto free_all; 500 } 501 502 if (vnt_key_init_table(priv)) 503 goto free_all; 504 505 priv->int_interval = 1; /* bInterval is set to 1 */ 506 507 vnt_int_start_interrupt(priv); 508 509 ieee80211_wake_queues(hw); 510 511 return 0; 512 513 free_all: 514 vnt_free_rx_bufs(priv); 515 vnt_free_tx_bufs(priv); 516 vnt_free_int_bufs(priv); 517 518 usb_kill_urb(priv->interrupt_urb); 519 usb_free_urb(priv->interrupt_urb); 520 521 return -ENOMEM; 522 } 523 524 static void vnt_stop(struct ieee80211_hw *hw) 525 { 526 struct vnt_private *priv = hw->priv; 527 int i; 528 529 if (!priv) 530 return; 531 532 for (i = 0; i < MAX_KEY_TABLE; i++) 533 vnt_mac_disable_keyentry(priv, i); 534 535 /* clear all keys */ 536 priv->key_entry_inuse = 0; 537 538 if (!test_bit(DEVICE_FLAGS_UNPLUG, &priv->flags)) 539 vnt_mac_shutdown(priv); 540 541 ieee80211_stop_queues(hw); 542 543 set_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags); 544 545 cancel_delayed_work_sync(&priv->run_command_work); 546 547 priv->cmd_running = false; 548 549 vnt_free_tx_bufs(priv); 550 vnt_free_rx_bufs(priv); 551 vnt_free_int_bufs(priv); 552 553 usb_kill_urb(priv->interrupt_urb); 554 usb_free_urb(priv->interrupt_urb); 555 } 556 557 static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 558 { 559 struct vnt_private *priv = hw->priv; 560 561 priv->vif = vif; 562 563 switch (vif->type) { 564 case NL80211_IFTYPE_STATION: 565 break; 566 case NL80211_IFTYPE_ADHOC: 567 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST); 568 569 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC); 570 571 break; 572 case NL80211_IFTYPE_AP: 573 vnt_mac_reg_bits_off(priv, MAC_REG_RCR, RCR_UNICAST); 574 575 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_AP); 576 577 break; 578 default: 579 return -EOPNOTSUPP; 580 } 581 582 priv->op_mode = vif->type; 583 584 vnt_set_bss_mode(priv); 585 586 /* LED blink on TX */ 587 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_INTER); 588 589 return 0; 590 } 591 592 static void vnt_remove_interface(struct ieee80211_hw *hw, 593 struct ieee80211_vif *vif) 594 { 595 struct vnt_private *priv = hw->priv; 596 597 switch (vif->type) { 598 case NL80211_IFTYPE_STATION: 599 break; 600 case NL80211_IFTYPE_ADHOC: 601 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX); 602 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN); 603 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_ADHOC); 604 break; 605 case NL80211_IFTYPE_AP: 606 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX); 607 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN); 608 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_AP); 609 break; 610 default: 611 break; 612 } 613 614 vnt_radio_power_off(priv); 615 616 priv->op_mode = NL80211_IFTYPE_UNSPECIFIED; 617 618 /* LED slow blink */ 619 vnt_mac_set_led(priv, LEDSTS_STS, LEDSTS_SLOW); 620 } 621 622 static int vnt_config(struct ieee80211_hw *hw, u32 changed) 623 { 624 struct vnt_private *priv = hw->priv; 625 struct ieee80211_conf *conf = &hw->conf; 626 627 if (changed & IEEE80211_CONF_CHANGE_PS) { 628 if (conf->flags & IEEE80211_CONF_PS) 629 vnt_enable_power_saving(priv, conf->listen_interval); 630 else 631 vnt_disable_power_saving(priv); 632 } 633 634 if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || 635 (conf->flags & IEEE80211_CONF_OFFCHANNEL)) { 636 vnt_set_channel(priv, conf->chandef.chan->hw_value); 637 638 if (conf->chandef.chan->band == NL80211_BAND_5GHZ) 639 priv->bb_type = BB_TYPE_11A; 640 else 641 priv->bb_type = BB_TYPE_11G; 642 } 643 644 if (changed & IEEE80211_CONF_CHANGE_POWER) { 645 if (priv->bb_type == BB_TYPE_11B) 646 priv->current_rate = RATE_1M; 647 else 648 priv->current_rate = RATE_54M; 649 650 vnt_rf_setpower(priv, priv->current_rate, 651 conf->chandef.chan->hw_value); 652 } 653 654 return 0; 655 } 656 657 static void vnt_bss_info_changed(struct ieee80211_hw *hw, 658 struct ieee80211_vif *vif, 659 struct ieee80211_bss_conf *conf, u32 changed) 660 { 661 struct vnt_private *priv = hw->priv; 662 663 priv->current_aid = conf->aid; 664 665 if (changed & BSS_CHANGED_BSSID && conf->bssid) 666 vnt_mac_set_bssid_addr(priv, (u8 *)conf->bssid); 667 668 if (changed & BSS_CHANGED_BASIC_RATES) { 669 priv->basic_rates = conf->basic_rates; 670 671 vnt_update_top_rates(priv); 672 vnt_set_bss_mode(priv); 673 674 dev_dbg(&priv->usb->dev, "basic rates %x\n", conf->basic_rates); 675 } 676 677 if (changed & BSS_CHANGED_ERP_PREAMBLE) { 678 if (conf->use_short_preamble) { 679 vnt_mac_enable_barker_preamble_mode(priv); 680 priv->preamble_type = true; 681 } else { 682 vnt_mac_disable_barker_preamble_mode(priv); 683 priv->preamble_type = false; 684 } 685 } 686 687 if (changed & BSS_CHANGED_ERP_CTS_PROT) { 688 if (conf->use_cts_prot) 689 vnt_mac_enable_protect_mode(priv); 690 else 691 vnt_mac_disable_protect_mode(priv); 692 } 693 694 if (changed & BSS_CHANGED_ERP_SLOT) { 695 if (conf->use_short_slot) 696 priv->short_slot_time = true; 697 else 698 priv->short_slot_time = false; 699 700 vnt_set_short_slot_time(priv); 701 vnt_update_ifs(priv); 702 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]); 703 vnt_update_pre_ed_threshold(priv, false); 704 } 705 706 if (changed & BSS_CHANGED_TXPOWER) 707 vnt_rf_setpower(priv, priv->current_rate, 708 conf->chandef.chan->hw_value); 709 710 if (changed & BSS_CHANGED_BEACON_ENABLED) { 711 dev_dbg(&priv->usb->dev, 712 "Beacon enable %d\n", conf->enable_beacon); 713 714 if (conf->enable_beacon) { 715 vnt_beacon_enable(priv, vif, conf); 716 717 vnt_mac_reg_bits_on(priv, MAC_REG_TCR, TCR_AUTOBCNTX); 718 } else { 719 vnt_mac_reg_bits_off(priv, MAC_REG_TCR, TCR_AUTOBCNTX); 720 } 721 } 722 723 if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) && 724 priv->op_mode != NL80211_IFTYPE_AP) { 725 if (conf->assoc && conf->beacon_rate) { 726 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, 727 TFTCTL_TSFCNTREN); 728 729 vnt_adjust_tsf(priv, conf->beacon_rate->hw_value, 730 conf->sync_tsf, priv->current_tsf); 731 732 vnt_mac_set_beacon_interval(priv, conf->beacon_int); 733 734 vnt_reset_next_tbtt(priv, conf->beacon_int); 735 } else { 736 vnt_clear_current_tsf(priv); 737 738 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, 739 TFTCTL_TSFCNTREN); 740 } 741 } 742 } 743 744 static u64 vnt_prepare_multicast(struct ieee80211_hw *hw, 745 struct netdev_hw_addr_list *mc_list) 746 { 747 struct vnt_private *priv = hw->priv; 748 struct netdev_hw_addr *ha; 749 u64 mc_filter = 0; 750 u32 bit_nr = 0; 751 752 netdev_hw_addr_list_for_each(ha, mc_list) { 753 bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; 754 755 mc_filter |= 1ULL << (bit_nr & 0x3f); 756 } 757 758 priv->mc_list_count = mc_list->count; 759 760 return mc_filter; 761 } 762 763 static void vnt_configure(struct ieee80211_hw *hw, 764 unsigned int changed_flags, 765 unsigned int *total_flags, u64 multicast) 766 { 767 struct vnt_private *priv = hw->priv; 768 u8 rx_mode = 0; 769 int rc; 770 771 *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC; 772 773 rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR, 774 MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode); 775 776 if (!rc) 777 rx_mode = RCR_MULTICAST | RCR_BROADCAST; 778 779 dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode); 780 781 if (changed_flags & FIF_ALLMULTI) { 782 if (*total_flags & FIF_ALLMULTI) { 783 if (priv->mc_list_count > 2) 784 vnt_mac_set_filter(priv, ~0); 785 else 786 vnt_mac_set_filter(priv, multicast); 787 788 rx_mode |= RCR_MULTICAST | RCR_BROADCAST; 789 } else { 790 rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST); 791 } 792 } 793 794 if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) { 795 if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) 796 rx_mode &= ~RCR_BSSID; 797 else 798 rx_mode |= RCR_BSSID; 799 } 800 801 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_RCR, rx_mode); 802 803 dev_dbg(&priv->usb->dev, "rx mode out= %x\n", rx_mode); 804 } 805 806 static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 807 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 808 struct ieee80211_key_conf *key) 809 { 810 struct vnt_private *priv = hw->priv; 811 812 switch (cmd) { 813 case SET_KEY: 814 if (vnt_set_keys(hw, sta, vif, key)) 815 return -EOPNOTSUPP; 816 break; 817 case DISABLE_KEY: 818 if (test_bit(key->hw_key_idx, &priv->key_entry_inuse)) 819 clear_bit(key->hw_key_idx, &priv->key_entry_inuse); 820 default: 821 break; 822 } 823 824 return 0; 825 } 826 827 static void vnt_sw_scan_start(struct ieee80211_hw *hw, 828 struct ieee80211_vif *vif, 829 const u8 *addr) 830 { 831 struct vnt_private *priv = hw->priv; 832 833 /* Set max sensitivity*/ 834 vnt_update_pre_ed_threshold(priv, true); 835 } 836 837 static void vnt_sw_scan_complete(struct ieee80211_hw *hw, 838 struct ieee80211_vif *vif) 839 { 840 struct vnt_private *priv = hw->priv; 841 842 /* Return sensitivity to channel level*/ 843 vnt_update_pre_ed_threshold(priv, false); 844 } 845 846 static int vnt_get_stats(struct ieee80211_hw *hw, 847 struct ieee80211_low_level_stats *stats) 848 { 849 struct vnt_private *priv = hw->priv; 850 851 memcpy(stats, &priv->low_stats, sizeof(*stats)); 852 853 return 0; 854 } 855 856 static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 857 { 858 struct vnt_private *priv = hw->priv; 859 860 return priv->current_tsf; 861 } 862 863 static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 864 u64 tsf) 865 { 866 struct vnt_private *priv = hw->priv; 867 868 vnt_update_next_tbtt(priv, tsf, vif->bss_conf.beacon_int); 869 } 870 871 static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 872 { 873 struct vnt_private *priv = hw->priv; 874 875 vnt_mac_reg_bits_off(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTREN); 876 877 vnt_clear_current_tsf(priv); 878 } 879 880 static const struct ieee80211_ops vnt_mac_ops = { 881 .tx = vnt_tx_80211, 882 .start = vnt_start, 883 .stop = vnt_stop, 884 .add_interface = vnt_add_interface, 885 .remove_interface = vnt_remove_interface, 886 .config = vnt_config, 887 .bss_info_changed = vnt_bss_info_changed, 888 .prepare_multicast = vnt_prepare_multicast, 889 .configure_filter = vnt_configure, 890 .set_key = vnt_set_key, 891 .sw_scan_start = vnt_sw_scan_start, 892 .sw_scan_complete = vnt_sw_scan_complete, 893 .get_stats = vnt_get_stats, 894 .get_tsf = vnt_get_tsf, 895 .set_tsf = vnt_set_tsf, 896 .reset_tsf = vnt_reset_tsf, 897 }; 898 899 int vnt_init(struct vnt_private *priv) 900 { 901 if (!(vnt_init_registers(priv))) 902 return -EAGAIN; 903 904 SET_IEEE80211_PERM_ADDR(priv->hw, priv->permanent_net_addr); 905 906 vnt_init_bands(priv); 907 908 if (ieee80211_register_hw(priv->hw)) 909 return -ENODEV; 910 911 priv->mac_hw = true; 912 913 vnt_radio_power_off(priv); 914 915 return 0; 916 } 917 918 static int 919 vt6656_probe(struct usb_interface *intf, const struct usb_device_id *id) 920 { 921 struct usb_device *udev; 922 struct vnt_private *priv; 923 struct ieee80211_hw *hw; 924 struct wiphy *wiphy; 925 int rc = 0; 926 927 udev = usb_get_dev(interface_to_usbdev(intf)); 928 929 dev_notice(&udev->dev, "%s Ver. %s\n", 930 DEVICE_FULL_DRV_NAM, DEVICE_VERSION); 931 dev_notice(&udev->dev, 932 "Copyright (c) 2004 VIA Networking Technologies, Inc.\n"); 933 934 hw = ieee80211_alloc_hw(sizeof(struct vnt_private), &vnt_mac_ops); 935 if (!hw) { 936 dev_err(&udev->dev, "could not register ieee80211_hw\n"); 937 rc = -ENOMEM; 938 goto err_nomem; 939 } 940 941 priv = hw->priv; 942 priv->hw = hw; 943 priv->usb = udev; 944 945 vnt_set_options(priv); 946 947 spin_lock_init(&priv->lock); 948 mutex_init(&priv->usb_lock); 949 950 INIT_DELAYED_WORK(&priv->run_command_work, vnt_run_command); 951 952 usb_set_intfdata(intf, priv); 953 954 wiphy = priv->hw->wiphy; 955 956 wiphy->frag_threshold = FRAG_THRESH_DEF; 957 wiphy->rts_threshold = RTS_THRESH_DEF; 958 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 959 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP); 960 961 ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY); 962 ieee80211_hw_set(priv->hw, SIGNAL_DBM); 963 ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS); 964 ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS); 965 ieee80211_hw_set(priv->hw, SUPPORTS_PS); 966 967 priv->hw->max_signal = 100; 968 969 SET_IEEE80211_DEV(priv->hw, &intf->dev); 970 971 rc = usb_reset_device(priv->usb); 972 if (rc) 973 dev_warn(&priv->usb->dev, 974 "%s reset fail status=%d\n", __func__, rc); 975 976 clear_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags); 977 vnt_reset_command_timer(priv); 978 979 vnt_schedule_command(priv, WLAN_CMD_INIT_MAC80211); 980 981 return 0; 982 983 err_nomem: 984 usb_put_dev(udev); 985 986 return rc; 987 } 988 989 static void vt6656_disconnect(struct usb_interface *intf) 990 { 991 struct vnt_private *priv = usb_get_intfdata(intf); 992 993 if (!priv) 994 return; 995 996 if (priv->mac_hw) 997 ieee80211_unregister_hw(priv->hw); 998 999 usb_set_intfdata(intf, NULL); 1000 usb_put_dev(interface_to_usbdev(intf)); 1001 1002 set_bit(DEVICE_FLAGS_UNPLUG, &priv->flags); 1003 1004 ieee80211_free_hw(priv->hw); 1005 } 1006 1007 #ifdef CONFIG_PM 1008 1009 static int vt6656_suspend(struct usb_interface *intf, pm_message_t message) 1010 { 1011 return 0; 1012 } 1013 1014 static int vt6656_resume(struct usb_interface *intf) 1015 { 1016 return 0; 1017 } 1018 1019 #endif /* CONFIG_PM */ 1020 1021 MODULE_DEVICE_TABLE(usb, vt6656_table); 1022 1023 static struct usb_driver vt6656_driver = { 1024 .name = DEVICE_NAME, 1025 .probe = vt6656_probe, 1026 .disconnect = vt6656_disconnect, 1027 .id_table = vt6656_table, 1028 #ifdef CONFIG_PM 1029 .suspend = vt6656_suspend, 1030 .resume = vt6656_resume, 1031 #endif /* CONFIG_PM */ 1032 }; 1033 1034 module_usb_driver(vt6656_driver); 1035