457 lines · c
1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.4 * All rights reserved.5 *6 * Purpose: Provide functions to setup NIC operation mode7 * Functions:8 * vnt_set_rspinf - Set RSPINF9 * vnt_update_ifs - Update slotTime,SIFS,DIFS, and EIFS10 * vnt_update_top_rates - Update BasicTopRate11 * vnt_add_basic_rate - Add to BasicRateSet12 * vnt_ofdm_min_rate - Check if any OFDM rate is in BasicRateSet13 * vnt_get_tsf_offset - Calculate TSFOffset14 * vnt_get_next_tbtt - Calculate Next Beacon TSF counter15 * vnt_reset_next_tbtt - Set NIC Beacon time16 * vnt_update_next_tbtt - Sync. NIC Beacon time17 * vnt_radio_power_off - Turn Off NIC Radio Power18 * vnt_radio_power_on - Turn On NIC Radio Power19 *20 * Revision History:21 * 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.22 * 08-26-2003 Kyle Hsu: Modify the definition type of dwIoBase.23 * 09-01-2003 Bryan YC Fan: Add vnt_update_ifs().24 *25 */26 27#include <linux/bitops.h>28#include <linux/errno.h>29#include "device.h"30#include "card.h"31#include "baseband.h"32#include "mac.h"33#include "desc.h"34#include "rf.h"35#include "power.h"36#include "key.h"37#include "usbpipe.h"38 39/* const u16 cw_rxbcntsf_off[MAX_RATE] =40 * {17, 34, 96, 192, 34, 23, 17, 11, 8, 5, 4, 3};41 */42 43static const u16 cw_rxbcntsf_off[MAX_RATE] = {44 192, 96, 34, 17, 34, 23, 17, 11, 8, 5, 4, 345};46 47int vnt_set_channel(struct vnt_private *priv, u32 connection_channel)48{49 int ret;50 51 if (connection_channel > CB_MAX_CHANNEL || !connection_channel)52 return -EINVAL;53 54 /* clear NAV */55 vnt_mac_reg_bits_on(priv, MAC_REG_MACCR, MACCR_CLRNAV);56 57 /* Set Channel[7] = 0 to tell H/W channel is changing now. */58 vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL,59 (BIT(7) | BIT(5) | BIT(4)));60 61 ret = vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,62 connection_channel, 0, 0, NULL);63 if (ret)64 return ret;65 66 return vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,67 (u8)(connection_channel | 0x80));68}69 70static const u8 vnt_rspinf_b_short_table[] = {71 0x70, 0x00, 0x00, 0x00, 0x38, 0x00, 0x09, 0x00,72 0x15, 0x00, 0x0a, 0x00, 0x0b, 0x00, 0x0b, 0x8073};74 75static const u8 vnt_rspinf_b_long_table[] = {76 0x70, 0x00, 0x00, 0x00, 0x38, 0x00, 0x01, 0x00,77 0x15, 0x00, 0x02, 0x00, 0x0b, 0x00, 0x03, 0x8078};79 80static const u8 vnt_rspinf_a_table[] = {81 0x9b, 0x18, 0x9f, 0x10, 0x9a, 0x0a, 0x9e, 0x08, 0x99,82 0x08, 0x9d, 0x04, 0x98, 0x04, 0x9c, 0x04, 0x9c, 0x0483};84 85static const u8 vnt_rspinf_gb_table[] = {86 0x8b, 0x1e, 0x8f, 0x16, 0x8a, 0x12, 0x8e, 0x0e, 0x89,87 0x0e, 0x8d, 0x0a, 0x88, 0x0a, 0x8c, 0x0a, 0x8c, 0x0a88};89 90int vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)91{92 const u8 *data;93 u16 len;94 int ret;95 96 if (priv->preamble_type) {97 data = vnt_rspinf_b_short_table;98 len = ARRAY_SIZE(vnt_rspinf_b_short_table);99 } else {100 data = vnt_rspinf_b_long_table;101 len = ARRAY_SIZE(vnt_rspinf_b_long_table);102 }103 104 /* RSPINF_b_1 to RSPINF_b_11 */105 ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_B_1,106 MESSAGE_REQUEST_MACREG, len, data);107 if (ret)108 return ret;109 110 if (bb_type == BB_TYPE_11A) {111 data = vnt_rspinf_a_table;112 len = ARRAY_SIZE(vnt_rspinf_a_table);113 } else {114 data = vnt_rspinf_gb_table;115 len = ARRAY_SIZE(vnt_rspinf_gb_table);116 }117 118 /* RSPINF_a_6 to RSPINF_a_72 */119 return vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_A_6,120 MESSAGE_REQUEST_MACREG, len, data);121}122 123int vnt_update_ifs(struct vnt_private *priv)124{125 u8 max_min = 0;126 u8 data[4];127 int ret;128 129 if (priv->packet_type == PK_TYPE_11A) {130 priv->slot = C_SLOT_SHORT;131 priv->sifs = C_SIFS_A;132 priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;133 max_min = 4;134 } else {135 priv->sifs = C_SIFS_BG;136 137 if (priv->short_slot_time) {138 priv->slot = C_SLOT_SHORT;139 max_min = 4;140 } else {141 priv->slot = C_SLOT_LONG;142 max_min = 5;143 }144 145 priv->difs = C_SIFS_BG + 2 * priv->slot;146 }147 148 priv->eifs = C_EIFS;149 150 data[0] = (u8)priv->sifs;151 data[1] = (u8)priv->difs;152 data[2] = (u8)priv->eifs;153 data[3] = (u8)priv->slot;154 155 ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,156 MESSAGE_REQUEST_MACREG, 4, &data[0]);157 if (ret)158 return ret;159 160 max_min |= 0xa0;161 162 return vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,163 MESSAGE_REQUEST_MACREG, 1, &max_min);164}165 166void vnt_update_top_rates(struct vnt_private *priv)167{168 int pos;169 170 pos = fls(priv->basic_rates & GENMASK(RATE_54M, RATE_6M));171 priv->top_ofdm_basic_rate = pos ? (pos - 1) : RATE_24M;172 173 pos = fls(priv->basic_rates & GENMASK(RATE_11M, RATE_1M));174 priv->top_cck_basic_rate = pos ? (pos - 1) : RATE_1M;175}176 177bool vnt_ofdm_min_rate(struct vnt_private *priv)178{179 return priv->basic_rates & GENMASK(RATE_54M, RATE_6M) ? true : false;180}181 182u8 vnt_get_pkt_type(struct vnt_private *priv)183{184 if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)185 return (u8)priv->bb_type;186 else if (vnt_ofdm_min_rate(priv))187 return PK_TYPE_11GA;188 return PK_TYPE_11GB;189}190 191/*192 * Description: Calculate TSF offset of two TSF input193 * Get TSF Offset from RxBCN's TSF and local TSF194 *195 * Parameters:196 * In:197 * rx_rate - rx rate.198 * tsf1 - Rx BCN's TSF199 * tsf2 - Local TSF200 * Out:201 * none202 *203 * Return Value: TSF Offset value204 *205 */206u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)207{208 return tsf1 - tsf2 - (u64)cw_rxbcntsf_off[rx_rate % MAX_RATE];209}210 211int vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,212 u64 time_stamp, u64 local_tsf)213{214 u64 tsf_offset = 0;215 u8 data[8];216 217 tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);218 219 data[0] = (u8)tsf_offset;220 data[1] = (u8)(tsf_offset >> 8);221 data[2] = (u8)(tsf_offset >> 16);222 data[3] = (u8)(tsf_offset >> 24);223 data[4] = (u8)(tsf_offset >> 32);224 data[5] = (u8)(tsf_offset >> 40);225 data[6] = (u8)(tsf_offset >> 48);226 data[7] = (u8)(tsf_offset >> 56);227 228 return vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,229 MESSAGE_REQUEST_TSF, 0, 8, data);230}231 232/*233 * Description: Clear NIC TSF counter234 * Clear local TSF counter235 *236 * Parameters:237 * In:238 * priv - The adapter to be read239 *240 * Return Value: true if success; otherwise false241 *242 */243bool vnt_clear_current_tsf(struct vnt_private *priv)244{245 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);246 247 priv->current_tsf = 0;248 249 return true;250}251 252/*253 * Description: Read NIC TSF counter254 * Get NEXTTBTT from adjusted TSF and Beacon Interval255 *256 * Parameters:257 * In:258 * tsf - Current TSF counter259 * beacon_interval - Beacon Interval260 * Out:261 * tsf - Current TSF counter262 *263 * Return Value: TSF value of next Beacon264 *265 */266u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)267{268 u32 beacon_int;269 270 beacon_int = beacon_interval * 1024;271 272 /* Next TBTT =273 * ((local_current_TSF / beacon_interval) + 1) * beacon_interval274 */275 if (beacon_int) {276 do_div(tsf, beacon_int);277 tsf += 1;278 tsf *= beacon_int;279 }280 281 return tsf;282}283 284int vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)285{286 u64 next_tbtt = 0;287 u8 data[8];288 289 vnt_clear_current_tsf(priv);290 291 next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);292 293 data[0] = (u8)next_tbtt;294 data[1] = (u8)(next_tbtt >> 8);295 data[2] = (u8)(next_tbtt >> 16);296 data[3] = (u8)(next_tbtt >> 24);297 data[4] = (u8)(next_tbtt >> 32);298 data[5] = (u8)(next_tbtt >> 40);299 data[6] = (u8)(next_tbtt >> 48);300 data[7] = (u8)(next_tbtt >> 56);301 302 return vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,303 MESSAGE_REQUEST_TBTT, 0, 8, data);304}305 306int vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,307 u16 beacon_interval)308{309 u8 data[8];310 int ret;311 312 tsf = vnt_get_next_tbtt(tsf, beacon_interval);313 314 data[0] = (u8)tsf;315 data[1] = (u8)(tsf >> 8);316 data[2] = (u8)(tsf >> 16);317 data[3] = (u8)(tsf >> 24);318 data[4] = (u8)(tsf >> 32);319 data[5] = (u8)(tsf >> 40);320 data[6] = (u8)(tsf >> 48);321 data[7] = (u8)(tsf >> 56);322 323 ret = vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,324 MESSAGE_REQUEST_TBTT, 0, 8, data);325 if (ret)326 return ret;327 328 dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);329 return 0;330}331 332/*333 * Description: Turn off Radio power334 *335 * Parameters:336 * In:337 * priv - The adapter to be turned off338 * Out:339 * none340 *341 * Return Value: true if success; otherwise false342 *343 */344int vnt_radio_power_off(struct vnt_private *priv)345{346 int ret = 0;347 348 switch (priv->rf_type) {349 case RF_AL2230:350 case RF_AL2230S:351 case RF_VT3226:352 case RF_VT3226D0:353 ret = vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,354 (SOFTPWRCTL_SWPE2 |355 SOFTPWRCTL_SWPE3));356 break;357 }358 359 if (ret)360 goto end;361 362 ret = vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);363 if (ret)364 goto end;365 366 ret = vnt_set_deep_sleep(priv);367 if (ret)368 goto end;369 370 ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);371 372end:373 return ret;374}375 376/*377 * Description: Turn on Radio power378 *379 * Parameters:380 * In:381 * priv - The adapter to be turned on382 * Out:383 * none384 *385 * Return Value: true if success; otherwise false386 *387 */388int vnt_radio_power_on(struct vnt_private *priv)389{390 int ret = 0;391 392 ret = vnt_exit_deep_sleep(priv);393 if (ret)394 return ret;395 396 ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);397 if (ret)398 return ret;399 400 switch (priv->rf_type) {401 case RF_AL2230:402 case RF_AL2230S:403 case RF_VT3226:404 case RF_VT3226D0:405 ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,406 (SOFTPWRCTL_SWPE2 |407 SOFTPWRCTL_SWPE3));408 if (ret)409 return ret;410 }411 412 return vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);413}414 415int vnt_set_bss_mode(struct vnt_private *priv)416{417 int ret;418 unsigned char type = priv->bb_type;419 unsigned char data = 0;420 unsigned char bb_vga_2_3 = 0x00;421 422 ret = vnt_mac_set_bb_type(priv, type);423 if (ret)424 return ret;425 426 priv->packet_type = vnt_get_pkt_type(priv);427 428 if (priv->bb_type == BB_TYPE_11A) {429 data = 0x03;430 bb_vga_2_3 = 0x10;431 } else if (priv->bb_type == BB_TYPE_11B) {432 data = 0x02;433 } else if (priv->bb_type == BB_TYPE_11G) {434 data = 0x08;435 }436 437 if (data) {438 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,439 0x88, data);440 if (ret)441 return ret;442 }443 444 ret = vnt_update_ifs(priv);445 if (ret)446 return ret;447 448 ret = vnt_set_rspinf(priv, priv->bb_type);449 if (ret)450 return ret;451 452 priv->bb_vga[2] = bb_vga_2_3;453 priv->bb_vga[3] = bb_vga_2_3;454 455 return vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);456}457