2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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.
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.
17 * Purpose: Provide functions to setup NIC operation mode
19 * vnt_set_rspinf - Set RSPINF
20 * vnt_update_ifs - Update slotTime,SIFS,DIFS, and EIFS
21 * vnt_update_top_rates - Update BasicTopRate
22 * vnt_add_basic_rate - Add to BasicRateSet
23 * vnt_ofdm_min_rate - Check if any OFDM rate is in BasicRateSet
24 * vnt_get_tsf_offset - Calculate TSFOffset
25 * vnt_get_current_tsf - Read Current NIC TSF counter
26 * vnt_get_next_tbtt - Calculate Next Beacon TSF counter
27 * vnt_reset_next_tbtt - Set NIC Beacon time
28 * vnt_update_next_tbtt - Sync. NIC Beacon time
29 * vnt_radio_power_off - Turn Off NIC Radio Power
30 * vnt_radio_power_on - Turn On NIC Radio Power
33 * 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.
34 * 08-26-2003 Kyle Hsu: Modify the definition type of dwIoBase.
35 * 09-01-2003 Bryan YC Fan: Add vnt_update_ifs().
49 /* const u16 cw_rxbcntsf_off[MAX_RATE] =
50 * {17, 34, 96, 192, 34, 23, 17, 11, 8, 5, 4, 3};
53 static const u16 cw_rxbcntsf_off[MAX_RATE] = {
54 192, 96, 34, 17, 34, 23, 17, 11, 8, 5, 4, 3
58 * Description: Set NIC media channel
62 * pDevice - The adapter to be set
63 * connection_channel - Channel to be set
67 void vnt_set_channel(struct vnt_private *priv, u32 connection_channel)
69 if (connection_channel > CB_MAX_CHANNEL || !connection_channel)
73 vnt_mac_reg_bits_on(priv, MAC_REG_MACCR, MACCR_CLRNAV);
75 /* Set Channel[7] = 0 to tell H/W channel is changing now. */
76 vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL, 0xb0);
78 vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,
79 connection_channel, 0, 0, NULL);
81 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,
82 (u8)(connection_channel | 0x80));
86 * Description: Get CCK mode basic rate
90 * priv - The adapter to be set
91 * rate_idx - Receiving data rate
95 * Return Value: response Control frame rate
98 static u16 vnt_get_cck_rate(struct vnt_private *priv, u16 rate_idx)
102 while (ui > RATE_1M) {
103 if (priv->basic_rates & (1 << ui))
112 * Description: Get OFDM mode basic rate
116 * priv - The adapter to be set
117 * rate_idx - Receiving data rate
121 * Return Value: response Control frame rate
124 static u16 vnt_get_ofdm_rate(struct vnt_private *priv, u16 rate_idx)
128 dev_dbg(&priv->usb->dev, "%s basic rate: %d\n",
129 __func__, priv->basic_rates);
131 if (!vnt_ofdm_min_rate(priv)) {
132 dev_dbg(&priv->usb->dev, "%s (NO OFDM) %d\n",
134 if (rate_idx > RATE_24M)
139 while (ui > RATE_11M) {
140 if (priv->basic_rates & (1 << ui)) {
141 dev_dbg(&priv->usb->dev, "%s rate: %d\n",
148 dev_dbg(&priv->usb->dev, "%s basic rate: 24M\n", __func__);
154 * Description: Calculate TxRate and RsvTime fields for RSPINF in OFDM mode.
159 * bb_type - Tx Packet type
161 * tx_rate - pointer to RSPINF TxRate field
162 * rsv_time- pointer to RSPINF RsvTime field
167 static void vnt_calculate_ofdm_rate(u16 rate, u8 bb_type,
168 u8 *tx_rate, u8 *rsv_time)
172 if (bb_type == BB_TYPE_11A) {
181 if (bb_type == BB_TYPE_11A) {
190 if (bb_type == BB_TYPE_11A) {
199 if (bb_type == BB_TYPE_11A) {
208 if (bb_type == BB_TYPE_11A) {
217 if (bb_type == BB_TYPE_11A) {
226 if (bb_type == BB_TYPE_11A) {
236 if (bb_type == BB_TYPE_11A) {
248 * Description: Set RSPINF
252 * pDevice - The adapter to be set
256 * Return Value: None.
260 void vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)
262 struct vnt_phy_field phy[4];
263 u8 tx_rate[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0}; /* For OFDM */
264 u8 rsv_time[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
269 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_1M),
270 PK_TYPE_11B, &phy[0]);
273 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_2M),
274 PK_TYPE_11B, &phy[1]);
277 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_5M),
278 PK_TYPE_11B, &phy[2]);
281 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_11M),
282 PK_TYPE_11B, &phy[3]);
285 vnt_calculate_ofdm_rate(RATE_6M, bb_type, &tx_rate[0], &rsv_time[0]);
288 vnt_calculate_ofdm_rate(RATE_9M, bb_type, &tx_rate[1], &rsv_time[1]);
291 vnt_calculate_ofdm_rate(RATE_12M, bb_type, &tx_rate[2], &rsv_time[2]);
294 vnt_calculate_ofdm_rate(RATE_18M, bb_type, &tx_rate[3], &rsv_time[3]);
297 vnt_calculate_ofdm_rate(RATE_24M, bb_type, &tx_rate[4], &rsv_time[4]);
300 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_36M),
301 bb_type, &tx_rate[5], &rsv_time[5]);
304 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_48M),
305 bb_type, &tx_rate[6], &rsv_time[6]);
308 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
309 bb_type, &tx_rate[7], &rsv_time[7]);
312 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
313 bb_type, &tx_rate[8], &rsv_time[8]);
315 put_unaligned(phy[0].len, (u16 *)&data[0]);
316 data[2] = phy[0].signal;
317 data[3] = phy[0].service;
319 put_unaligned(phy[1].len, (u16 *)&data[4]);
320 data[6] = phy[1].signal;
321 data[7] = phy[1].service;
323 put_unaligned(phy[2].len, (u16 *)&data[8]);
324 data[10] = phy[2].signal;
325 data[11] = phy[2].service;
327 put_unaligned(phy[3].len, (u16 *)&data[12]);
328 data[14] = phy[3].signal;
329 data[15] = phy[3].service;
331 for (i = 0; i < 9; i++) {
332 data[16 + i * 2] = tx_rate[i];
333 data[16 + i * 2 + 1] = rsv_time[i];
336 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_B_1,
337 MESSAGE_REQUEST_MACREG, 34, &data[0]);
341 * Description: Update IFS
345 * priv - The adapter to be set
349 * Return Value: None.
352 void vnt_update_ifs(struct vnt_private *priv)
357 if (priv->packet_type == PK_TYPE_11A) {
358 priv->slot = C_SLOT_SHORT;
359 priv->sifs = C_SIFS_A;
360 priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;
363 priv->sifs = C_SIFS_BG;
365 if (priv->short_slot_time) {
366 priv->slot = C_SLOT_SHORT;
369 priv->slot = C_SLOT_LONG;
373 priv->difs = C_SIFS_BG + 2 * priv->slot;
378 switch (priv->rf_type) {
380 if (priv->bb_type != BB_TYPE_11B) {
388 if (priv->bb_type != BB_TYPE_11B)
397 if (priv->bb_type == BB_TYPE_11A) {
408 data[0] = (u8)priv->sifs;
409 data[1] = (u8)priv->difs;
410 data[2] = (u8)priv->eifs;
411 data[3] = (u8)priv->slot;
413 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,
414 MESSAGE_REQUEST_MACREG, 4, &data[0]);
418 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,
419 MESSAGE_REQUEST_MACREG, 1, &max_min);
422 void vnt_update_top_rates(struct vnt_private *priv)
424 u8 top_ofdm = RATE_24M, top_cck = RATE_1M;
427 /*Determines the highest basic rate.*/
428 for (i = RATE_54M; i >= RATE_6M; i--) {
429 if (priv->basic_rates & (u16)(1 << i)) {
435 priv->top_ofdm_basic_rate = top_ofdm;
437 for (i = RATE_11M;; i--) {
438 if (priv->basic_rates & (u16)(1 << i)) {
446 priv->top_cck_basic_rate = top_cck;
449 int vnt_ofdm_min_rate(struct vnt_private *priv)
453 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
454 if ((priv->basic_rates) & ((u16)BIT(ii)))
461 u8 vnt_get_pkt_type(struct vnt_private *priv)
463 if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)
464 return (u8)priv->bb_type;
465 else if (vnt_ofdm_min_rate(priv))
471 * Description: Calculate TSF offset of two TSF input
472 * Get TSF Offset from RxBCN's TSF and local TSF
477 * tsf1 - Rx BCN's TSF
482 * Return Value: TSF Offset value
485 u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)
487 return tsf1 - tsf2 - (u64)cw_rxbcntsf_off[rx_rate % MAX_RATE];
491 * Description: Sync. TSF counter to BSS
492 * Get TSF offset and write to HW
496 * priv - The adapter to be sync.
497 * time_stamp - Rx BCN's TSF
498 * local_tsf - Local TSF
505 void vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,
506 u64 time_stamp, u64 local_tsf)
511 tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);
513 data[0] = (u8)tsf_offset;
514 data[1] = (u8)(tsf_offset >> 8);
515 data[2] = (u8)(tsf_offset >> 16);
516 data[3] = (u8)(tsf_offset >> 24);
517 data[4] = (u8)(tsf_offset >> 32);
518 data[5] = (u8)(tsf_offset >> 40);
519 data[6] = (u8)(tsf_offset >> 48);
520 data[7] = (u8)(tsf_offset >> 56);
522 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
523 MESSAGE_REQUEST_TSF, 0, 8, data);
527 * Description: Read NIC TSF counter
528 * Get local TSF counter
532 * priv - The adapter to be read
534 * current_tsf - Current TSF counter
536 * Return Value: true if success; otherwise false
539 bool vnt_get_current_tsf(struct vnt_private *priv, u64 *current_tsf)
541 *current_tsf = priv->current_tsf;
547 * Description: Clear NIC TSF counter
548 * Clear local TSF counter
552 * priv - The adapter to be read
554 * Return Value: true if success; otherwise false
557 bool vnt_clear_current_tsf(struct vnt_private *priv)
559 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
561 priv->current_tsf = 0;
567 * Description: Read NIC TSF counter
568 * Get NEXTTBTT from adjusted TSF and Beacon Interval
572 * tsf - Current TSF counter
573 * beacon_interval - Beacon Interval
575 * tsf - Current TSF counter
577 * Return Value: TSF value of next Beacon
580 u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)
584 beacon_int = beacon_interval * 1024;
587 * ((local_current_TSF / beacon_interval) + 1) * beacon_interval
590 do_div(tsf, beacon_int);
599 * Description: Set NIC TSF counter for first Beacon time
600 * Get NEXTTBTT from adjusted TSF and Beacon Interval
605 * beacon_interval - Beacon Interval
612 void vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)
617 vnt_clear_current_tsf(priv);
619 next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);
621 data[0] = (u8)next_tbtt;
622 data[1] = (u8)(next_tbtt >> 8);
623 data[2] = (u8)(next_tbtt >> 16);
624 data[3] = (u8)(next_tbtt >> 24);
625 data[4] = (u8)(next_tbtt >> 32);
626 data[5] = (u8)(next_tbtt >> 40);
627 data[6] = (u8)(next_tbtt >> 48);
628 data[7] = (u8)(next_tbtt >> 56);
630 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
631 MESSAGE_REQUEST_TBTT, 0, 8, data);
635 * Description: Sync NIC TSF counter for Beacon time
636 * Get NEXTTBTT and write to HW
640 * priv - The adapter to be set
641 * tsf - Current TSF counter
642 * beacon_interval - Beacon Interval
649 void vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,
654 tsf = vnt_get_next_tbtt(tsf, beacon_interval);
657 data[1] = (u8)(tsf >> 8);
658 data[2] = (u8)(tsf >> 16);
659 data[3] = (u8)(tsf >> 24);
660 data[4] = (u8)(tsf >> 32);
661 data[5] = (u8)(tsf >> 40);
662 data[6] = (u8)(tsf >> 48);
663 data[7] = (u8)(tsf >> 56);
665 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
666 MESSAGE_REQUEST_TBTT, 0, 8, data);
668 dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);
672 * Description: Turn off Radio power
676 * priv - The adapter to be turned off
680 * Return Value: true if success; otherwise false
683 int vnt_radio_power_off(struct vnt_private *priv)
687 switch (priv->rf_type) {
694 vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,
695 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
699 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
701 vnt_set_deep_sleep(priv);
703 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
709 * Description: Turn on Radio power
713 * priv - The adapter to be turned on
717 * Return Value: true if success; otherwise false
720 int vnt_radio_power_on(struct vnt_private *priv)
724 vnt_exit_deep_sleep(priv);
726 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
728 switch (priv->rf_type) {
735 vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
736 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
740 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
745 void vnt_set_bss_mode(struct vnt_private *priv)
747 if (priv->rf_type == RF_AIROHA7230 && priv->bb_type == BB_TYPE_11A)
748 vnt_mac_set_bb_type(priv, BB_TYPE_11G);
750 vnt_mac_set_bb_type(priv, priv->bb_type);
752 priv->packet_type = vnt_get_pkt_type(priv);
754 if (priv->bb_type == BB_TYPE_11A)
755 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x03);
756 else if (priv->bb_type == BB_TYPE_11B)
757 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x02);
758 else if (priv->bb_type == BB_TYPE_11G)
759 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x08);
761 vnt_update_ifs(priv);
762 vnt_set_rspinf(priv, (u8)priv->bb_type);
764 if (priv->bb_type == BB_TYPE_11A) {
765 if (priv->rf_type == RF_AIROHA7230) {
766 priv->bb_vga[0] = 0x20;
768 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
769 0xe7, priv->bb_vga[0]);
772 priv->bb_vga[2] = 0x10;
773 priv->bb_vga[3] = 0x10;
775 if (priv->rf_type == RF_AIROHA7230) {
776 priv->bb_vga[0] = 0x1c;
778 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
779 0xe7, priv->bb_vga[0]);
782 priv->bb_vga[2] = 0x0;
783 priv->bb_vga[3] = 0x0;
786 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);