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 cwRXBCNTSFOff[MAX_RATE] =
50 {17, 34, 96, 192, 34, 23, 17, 11, 8, 5, 4, 3}; */
52 static const u16 cwRXBCNTSFOff[MAX_RATE] = {
53 192, 96, 34, 17, 34, 23, 17, 11, 8, 5, 4, 3
57 * Description: Set NIC media channel
61 * pDevice - The adapter to be set
62 * connection_channel - Channel to be set
66 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)
173 if (bb_type == BB_TYPE_11A) {
182 if (bb_type == BB_TYPE_11A) {
191 if (bb_type == BB_TYPE_11A) {
200 if (bb_type == BB_TYPE_11A) {
209 if (bb_type == BB_TYPE_11A) {
218 if (bb_type == BB_TYPE_11A) {
227 if (bb_type == BB_TYPE_11A) {
237 if (bb_type == BB_TYPE_11A) {
249 * Description: Set RSPINF
253 * pDevice - The adapter to be set
257 * Return Value: None.
261 void vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)
263 struct vnt_phy_field phy[4];
264 u8 tx_rate[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0}; /* For OFDM */
265 u8 rsv_time[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
270 vnt_get_phy_field(priv, 14,
271 vnt_get_cck_rate(priv, RATE_1M), PK_TYPE_11B, &phy[0]);
274 vnt_get_phy_field(priv, 14,
275 vnt_get_cck_rate(priv, RATE_2M), PK_TYPE_11B, &phy[1]);
278 vnt_get_phy_field(priv, 14,
279 vnt_get_cck_rate(priv, RATE_5M), PK_TYPE_11B, &phy[2]);
282 vnt_get_phy_field(priv, 14,
283 vnt_get_cck_rate(priv, RATE_11M), PK_TYPE_11B, &phy[3]);
286 vnt_calculate_ofdm_rate(RATE_6M, bb_type, &tx_rate[0], &rsv_time[0]);
289 vnt_calculate_ofdm_rate(RATE_9M, bb_type, &tx_rate[1], &rsv_time[1]);
292 vnt_calculate_ofdm_rate(RATE_12M, bb_type, &tx_rate[2], &rsv_time[2]);
295 vnt_calculate_ofdm_rate(RATE_18M, bb_type, &tx_rate[3], &rsv_time[3]);
298 vnt_calculate_ofdm_rate(RATE_24M, bb_type, &tx_rate[4], &rsv_time[4]);
301 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_36M),
302 bb_type, &tx_rate[5], &rsv_time[5]);
305 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_48M),
306 bb_type, &tx_rate[6], &rsv_time[6]);
309 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
310 bb_type, &tx_rate[7], &rsv_time[7]);
313 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
314 bb_type, &tx_rate[8], &rsv_time[8]);
316 put_unaligned(phy[0].len, (u16 *)&data[0]);
317 data[2] = phy[0].signal;
318 data[3] = phy[0].service;
320 put_unaligned(phy[1].len, (u16 *)&data[4]);
321 data[6] = phy[1].signal;
322 data[7] = phy[1].service;
324 put_unaligned(phy[2].len, (u16 *)&data[8]);
325 data[10] = phy[2].signal;
326 data[11] = phy[2].service;
328 put_unaligned(phy[3].len, (u16 *)&data[12]);
329 data[14] = phy[3].signal;
330 data[15] = phy[3].service;
332 for (i = 0; i < 9; i++) {
333 data[16 + i * 2] = tx_rate[i];
334 data[16 + i * 2 + 1] = rsv_time[i];
337 vnt_control_out(priv, MESSAGE_TYPE_WRITE,
338 MAC_REG_RSPINF_B_1, MESSAGE_REQUEST_MACREG, 34, &data[0]);
342 * Description: Update IFS
346 * priv - The adapter to be set
350 * Return Value: None.
353 void vnt_update_ifs(struct vnt_private *priv)
358 if (priv->packet_type == PK_TYPE_11A) {
359 priv->slot = C_SLOT_SHORT;
360 priv->sifs = C_SIFS_A;
361 priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;
363 } else if (priv->packet_type == PK_TYPE_11B) {
364 priv->slot = C_SLOT_LONG;
365 priv->sifs = C_SIFS_BG;
366 priv->difs = C_SIFS_BG + 2 * C_SLOT_LONG;
368 } else {/* PK_TYPE_11GA & PK_TYPE_11GB */
369 bool ofdm_rate = false;
372 priv->sifs = C_SIFS_BG;
374 if (priv->short_slot_time)
375 priv->slot = C_SLOT_SHORT;
377 priv->slot = C_SLOT_LONG;
379 priv->difs = C_SIFS_BG + 2 * priv->slot;
381 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
382 if (priv->basic_rates & ((u32)(0x1 << ii))) {
396 switch (priv->rf_type) {
398 if (priv->bb_type != BB_TYPE_11B) {
406 if (priv->bb_type != BB_TYPE_11B)
415 if (priv->bb_type == BB_TYPE_11A) {
426 data[0] = (u8)priv->sifs;
427 data[1] = (u8)priv->difs;
428 data[2] = (u8)priv->eifs;
429 data[3] = (u8)priv->slot;
431 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,
432 MESSAGE_REQUEST_MACREG, 4, &data[0]);
436 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,
437 MESSAGE_REQUEST_MACREG, 1, &max_min);
440 void vnt_update_top_rates(struct vnt_private *priv)
442 u8 top_ofdm = RATE_24M, top_cck = RATE_1M;
445 /*Determines the highest basic rate.*/
446 for (i = RATE_54M; i >= RATE_6M; i--) {
447 if (priv->basic_rates & (u16)(1 << i)) {
453 priv->top_ofdm_basic_rate = top_ofdm;
455 for (i = RATE_11M;; i--) {
456 if (priv->basic_rates & (u16)(1 << i)) {
464 priv->top_cck_basic_rate = top_cck;
467 int vnt_ofdm_min_rate(struct vnt_private *priv)
471 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
472 if ((priv->basic_rates) & ((u16)BIT(ii)))
479 u8 vnt_get_pkt_type(struct vnt_private *priv)
482 if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)
483 return (u8)priv->bb_type;
484 else if (vnt_ofdm_min_rate(priv))
490 * Description: Calculate TSF offset of two TSF input
491 * Get TSF Offset from RxBCN's TSF and local TSF
496 * tsf1 - Rx BCN's TSF
501 * Return Value: TSF Offset value
504 u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)
509 rx_bcn_offset = cwRXBCNTSFOff[rx_rate % MAX_RATE];
511 tsf2 += (u64)rx_bcn_offset;
513 tsf_offset = tsf1 - tsf2;
519 * Description: Sync. TSF counter to BSS
520 * Get TSF offset and write to HW
524 * priv - The adapter to be sync.
525 * time_stamp - Rx BCN's TSF
526 * local_tsf - Local TSF
533 void vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,
534 u64 time_stamp, u64 local_tsf)
539 tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);
541 data[0] = (u8)tsf_offset;
542 data[1] = (u8)(tsf_offset >> 8);
543 data[2] = (u8)(tsf_offset >> 16);
544 data[3] = (u8)(tsf_offset >> 24);
545 data[4] = (u8)(tsf_offset >> 32);
546 data[5] = (u8)(tsf_offset >> 40);
547 data[6] = (u8)(tsf_offset >> 48);
548 data[7] = (u8)(tsf_offset >> 56);
550 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
551 MESSAGE_REQUEST_TSF, 0, 8, data);
554 * Description: Read NIC TSF counter
555 * Get local TSF counter
559 * priv - The adapter to be read
561 * current_tsf - Current TSF counter
563 * Return Value: true if success; otherwise false
566 bool vnt_get_current_tsf(struct vnt_private *priv, u64 *current_tsf)
569 *current_tsf = priv->current_tsf;
575 * Description: Clear NIC TSF counter
576 * Clear local TSF counter
580 * priv - The adapter to be read
582 * Return Value: true if success; otherwise false
585 bool vnt_clear_current_tsf(struct vnt_private *priv)
588 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
590 priv->current_tsf = 0;
596 * Description: Read NIC TSF counter
597 * Get NEXTTBTT from adjusted TSF and Beacon Interval
601 * tsf - Current TSF counter
602 * beacon_interval - Beacon Interval
604 * tsf - Current TSF counter
606 * Return Value: TSF value of next Beacon
609 u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)
613 beacon_int = beacon_interval * 1024;
616 * ((local_current_TSF / beacon_interval) + 1) * beacon_interval
619 do_div(tsf, beacon_int);
628 * Description: Set NIC TSF counter for first Beacon time
629 * Get NEXTTBTT from adjusted TSF and Beacon Interval
634 * beacon_interval - Beacon Interval
641 void vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)
646 vnt_clear_current_tsf(priv);
648 next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);
650 data[0] = (u8)next_tbtt;
651 data[1] = (u8)(next_tbtt >> 8);
652 data[2] = (u8)(next_tbtt >> 16);
653 data[3] = (u8)(next_tbtt >> 24);
654 data[4] = (u8)(next_tbtt >> 32);
655 data[5] = (u8)(next_tbtt >> 40);
656 data[6] = (u8)(next_tbtt >> 48);
657 data[7] = (u8)(next_tbtt >> 56);
659 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
660 MESSAGE_REQUEST_TBTT, 0, 8, data);
664 * Description: Sync NIC TSF counter for Beacon time
665 * Get NEXTTBTT and write to HW
669 * priv - The adapter to be set
670 * tsf - Current TSF counter
671 * beacon_interval - Beacon Interval
678 void vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,
683 tsf = vnt_get_next_tbtt(tsf, beacon_interval);
686 data[1] = (u8)(tsf >> 8);
687 data[2] = (u8)(tsf >> 16);
688 data[3] = (u8)(tsf >> 24);
689 data[4] = (u8)(tsf >> 32);
690 data[5] = (u8)(tsf >> 40);
691 data[6] = (u8)(tsf >> 48);
692 data[7] = (u8)(tsf >> 56);
694 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
695 MESSAGE_REQUEST_TBTT, 0, 8, data);
697 dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);
701 * Description: Turn off Radio power
705 * priv - The adapter to be turned off
709 * Return Value: true if success; otherwise false
712 int vnt_radio_power_off(struct vnt_private *priv)
716 switch (priv->rf_type) {
723 vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,
724 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
728 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
730 vnt_set_deep_sleep(priv);
732 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
738 * Description: Turn on Radio power
742 * priv - The adapter to be turned on
746 * Return Value: true if success; otherwise false
749 int vnt_radio_power_on(struct vnt_private *priv)
753 vnt_exit_deep_sleep(priv);
755 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
757 switch (priv->rf_type) {
764 vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
765 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
769 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
774 void vnt_set_bss_mode(struct vnt_private *priv)
776 if (priv->rf_type == RF_AIROHA7230 && priv->bb_type == BB_TYPE_11A)
777 vnt_mac_set_bb_type(priv, BB_TYPE_11G);
779 vnt_mac_set_bb_type(priv, priv->bb_type);
781 priv->packet_type = vnt_get_pkt_type(priv);
783 if (priv->bb_type == BB_TYPE_11A)
784 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x03);
785 else if (priv->bb_type == BB_TYPE_11B)
786 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x02);
787 else if (priv->bb_type == BB_TYPE_11G)
788 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x08);
790 vnt_update_ifs(priv);
791 vnt_set_rspinf(priv, (u8)priv->bb_type);
793 if (priv->bb_type == BB_TYPE_11A) {
794 if (priv->rf_type == RF_AIROHA7230) {
795 priv->bb_vga[0] = 0x20;
797 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
798 0xe7, priv->bb_vga[0]);
801 priv->bb_vga[2] = 0x10;
802 priv->bb_vga[3] = 0x10;
804 if (priv->rf_type == RF_AIROHA7230) {
805 priv->bb_vga[0] = 0x1c;
807 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
808 0xe7, priv->bb_vga[0]);
811 priv->bb_vga[2] = 0x0;
812 priv->bb_vga[3] = 0x0;
815 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);