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.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 * Purpose: Provide functions to setup NIC operation mode
22 * vnt_set_rspinf - Set RSPINF
23 * vnt_update_ifs - Update slotTime,SIFS,DIFS, and EIFS
24 * vnt_update_top_rates - Update BasicTopRate
25 * vnt_add_basic_rate - Add to BasicRateSet
26 * vnt_ofdm_min_rate - Check if any OFDM rate is in BasicRateSet
27 * vnt_get_tsf_offset - Calculate TSFOffset
28 * vnt_get_current_tsf - Read Current NIC TSF counter
29 * vnt_get_next_tbtt - Calculate Next Beacon TSF counter
30 * vnt_reset_next_tbtt - Set NIC Beacon time
31 * vnt_update_next_tbtt - Sync. NIC Beacon time
32 * vnt_radio_power_off - Turn Off NIC Radio Power
33 * vnt_radio_power_on - Turn On NIC Radio Power
36 * 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.
37 * 08-26-2003 Kyle Hsu: Modify the definition type of dwIoBase.
38 * 09-01-2003 Bryan YC Fan: Add vnt_update_ifs().
52 /* const u16 cwRXBCNTSFOff[MAX_RATE] =
53 {17, 34, 96, 192, 34, 23, 17, 11, 8, 5, 4, 3}; */
55 static const u16 cwRXBCNTSFOff[MAX_RATE] = {
56 192, 96, 34, 17, 34, 23, 17, 11, 8, 5, 4, 3
60 * Description: Set NIC media channel
64 * pDevice - The adapter to be set
65 * connection_channel - Channel to be set
69 void vnt_set_channel(struct vnt_private *priv, u32 connection_channel)
72 if (connection_channel > CB_MAX_CHANNEL || !connection_channel)
76 vnt_mac_reg_bits_on(priv, MAC_REG_MACCR, MACCR_CLRNAV);
78 /* Set Channel[7] = 0 to tell H/W channel is changing now. */
79 vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL, 0xb0);
81 vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,
82 connection_channel, 0, 0, NULL);
84 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,
85 (u8)(connection_channel|0x80));
89 * Description: Get CCK mode basic rate
93 * priv - The adapter to be set
94 * rate_idx - Receiving data rate
98 * Return Value: response Control frame rate
101 static u16 vnt_get_cck_rate(struct vnt_private *priv, u16 rate_idx)
105 while (ui > RATE_1M) {
106 if (priv->basic_rates & (1 << ui))
115 * Description: Get OFDM mode basic rate
119 * priv - The adapter to be set
120 * rate_idx - Receiving data rate
124 * Return Value: response Control frame rate
127 static u16 vnt_get_ofdm_rate(struct vnt_private *priv, u16 rate_idx)
131 dev_dbg(&priv->usb->dev, "%s basic rate: %d\n",
132 __func__, priv->basic_rates);
134 if (!vnt_ofdm_min_rate(priv)) {
135 dev_dbg(&priv->usb->dev, "%s (NO OFDM) %d\n",
137 if (rate_idx > RATE_24M)
142 while (ui > RATE_11M) {
143 if (priv->basic_rates & (1 << ui)) {
144 dev_dbg(&priv->usb->dev, "%s rate: %d\n",
151 dev_dbg(&priv->usb->dev, "%s basic rate: 24M\n", __func__);
157 * Description: Calculate TxRate and RsvTime fields for RSPINF in OFDM mode.
162 * bb_type - Tx Packet type
164 * tx_rate - pointer to RSPINF TxRate field
165 * rsv_time- pointer to RSPINF RsvTime field
170 static void vnt_calculate_ofdm_rate(u16 rate, u8 bb_type,
171 u8 *tx_rate, u8 *rsv_time)
176 if (bb_type == BB_TYPE_11A) {
185 if (bb_type == BB_TYPE_11A) {
194 if (bb_type == BB_TYPE_11A) {
203 if (bb_type == BB_TYPE_11A) {
212 if (bb_type == BB_TYPE_11A) {
221 if (bb_type == BB_TYPE_11A) {
230 if (bb_type == BB_TYPE_11A) {
240 if (bb_type == BB_TYPE_11A) {
252 * Description: Set RSPINF
256 * pDevice - The adapter to be set
260 * Return Value: None.
264 void vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)
266 struct vnt_phy_field phy[4];
267 u8 tx_rate[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0}; /* For OFDM */
268 u8 rsv_time[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
273 vnt_get_phy_field(priv, 14,
274 vnt_get_cck_rate(priv, RATE_1M), PK_TYPE_11B, &phy[0]);
277 vnt_get_phy_field(priv, 14,
278 vnt_get_cck_rate(priv, RATE_2M), PK_TYPE_11B, &phy[1]);
281 vnt_get_phy_field(priv, 14,
282 vnt_get_cck_rate(priv, RATE_5M), PK_TYPE_11B, &phy[2]);
285 vnt_get_phy_field(priv, 14,
286 vnt_get_cck_rate(priv, RATE_11M), PK_TYPE_11B, &phy[3]);
290 vnt_calculate_ofdm_rate(RATE_6M, bb_type, &tx_rate[0], &rsv_time[0]);
293 vnt_calculate_ofdm_rate(RATE_9M, bb_type, &tx_rate[1], &rsv_time[1]);
296 vnt_calculate_ofdm_rate(RATE_12M, bb_type, &tx_rate[2], &rsv_time[2]);
299 vnt_calculate_ofdm_rate(RATE_18M, bb_type, &tx_rate[3], &rsv_time[3]);
302 vnt_calculate_ofdm_rate(RATE_24M, bb_type, &tx_rate[4], &rsv_time[4]);
305 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_36M),
306 bb_type, &tx_rate[5], &rsv_time[5]);
309 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_48M),
310 bb_type, &tx_rate[6], &rsv_time[6]);
313 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
314 bb_type, &tx_rate[7], &rsv_time[7]);
317 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
318 bb_type, &tx_rate[8], &rsv_time[8]);
320 put_unaligned(phy[0].len, (u16 *)&data[0]);
321 data[2] = phy[0].signal;
322 data[3] = phy[0].service;
324 put_unaligned(phy[1].len, (u16 *)&data[4]);
325 data[6] = phy[1].signal;
326 data[7] = phy[1].service;
328 put_unaligned(phy[2].len, (u16 *)&data[8]);
329 data[10] = phy[2].signal;
330 data[11] = phy[2].service;
332 put_unaligned(phy[3].len, (u16 *)&data[12]);
333 data[14] = phy[3].signal;
334 data[15] = phy[3].service;
336 for (i = 0; i < 9; i++) {
337 data[16 + i * 2] = tx_rate[i];
338 data[16 + i * 2 + 1] = rsv_time[i];
341 vnt_control_out(priv, MESSAGE_TYPE_WRITE,
342 MAC_REG_RSPINF_B_1, MESSAGE_REQUEST_MACREG, 34, &data[0]);
346 * Description: Update IFS
350 * priv - The adapter to be set
354 * Return Value: None.
357 void vnt_update_ifs(struct vnt_private *priv)
362 if (priv->packet_type == PK_TYPE_11A) {
363 priv->slot = C_SLOT_SHORT;
364 priv->sifs = C_SIFS_A;
365 priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;
367 } else if (priv->packet_type == PK_TYPE_11B) {
368 priv->slot = C_SLOT_LONG;
369 priv->sifs = C_SIFS_BG;
370 priv->difs = C_SIFS_BG + 2 * C_SLOT_LONG;
372 } else {/* PK_TYPE_11GA & PK_TYPE_11GB */
373 bool ofdm_rate = false;
376 priv->sifs = C_SIFS_BG;
378 if (priv->short_slot_time)
379 priv->slot = C_SLOT_SHORT;
381 priv->slot = C_SLOT_LONG;
383 priv->difs = C_SIFS_BG + 2 * priv->slot;
385 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
386 if (priv->basic_rates & ((u32)(0x1 << ii))) {
392 if (ofdm_rate == true)
400 switch (priv->rf_type) {
402 if (priv->bb_type != BB_TYPE_11B) {
410 if (priv->bb_type != BB_TYPE_11B)
419 if (priv->bb_type == BB_TYPE_11A) {
430 data[0] = (u8)priv->sifs;
431 data[1] = (u8)priv->difs;
432 data[2] = (u8)priv->eifs;
433 data[3] = (u8)priv->slot;
435 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,
436 MESSAGE_REQUEST_MACREG, 4, &data[0]);
440 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,
441 MESSAGE_REQUEST_MACREG, 1, &max_min);
444 void vnt_update_top_rates(struct vnt_private *priv)
446 u8 top_ofdm = RATE_24M, top_cck = RATE_1M;
449 /*Determines the highest basic rate.*/
450 for (i = RATE_54M; i >= RATE_6M; i--) {
451 if (priv->basic_rates & (u16)(1 << i)) {
457 priv->top_ofdm_basic_rate = top_ofdm;
459 for (i = RATE_11M;; i--) {
460 if (priv->basic_rates & (u16)(1 << i)) {
468 priv->top_cck_basic_rate = top_cck;
471 int vnt_ofdm_min_rate(struct vnt_private *priv)
475 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
476 if ((priv->basic_rates) & ((u16)(1 << ii)))
483 u8 vnt_get_pkt_type(struct vnt_private *priv)
486 if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)
487 return (u8)priv->bb_type;
488 else if (vnt_ofdm_min_rate(priv))
494 * Description: Calculate TSF offset of two TSF input
495 * Get TSF Offset from RxBCN's TSF and local TSF
500 * tsf1 - Rx BCN's TSF
505 * Return Value: TSF Offset value
508 u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)
511 u16 rx_bcn_offset = 0;
513 rx_bcn_offset = cwRXBCNTSFOff[rx_rate % MAX_RATE];
515 tsf2 += (u64)rx_bcn_offset;
517 tsf_offset = tsf1 - tsf2;
523 * Description: Sync. TSF counter to BSS
524 * Get TSF offset and write to HW
528 * priv - The adapter to be sync.
529 * time_stamp - Rx BCN's TSF
530 * local_tsf - Local TSF
537 void vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,
538 u64 time_stamp, u64 local_tsf)
543 tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);
545 data[0] = (u8)tsf_offset;
546 data[1] = (u8)(tsf_offset >> 8);
547 data[2] = (u8)(tsf_offset >> 16);
548 data[3] = (u8)(tsf_offset >> 24);
549 data[4] = (u8)(tsf_offset >> 32);
550 data[5] = (u8)(tsf_offset >> 40);
551 data[6] = (u8)(tsf_offset >> 48);
552 data[7] = (u8)(tsf_offset >> 56);
554 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
555 MESSAGE_REQUEST_TSF, 0, 8, data);
558 * Description: Read NIC TSF counter
559 * Get local TSF counter
563 * priv - The adapter to be read
565 * current_tsf - Current TSF counter
567 * Return Value: true if success; otherwise false
570 bool vnt_get_current_tsf(struct vnt_private *priv, u64 *current_tsf)
573 *current_tsf = priv->current_tsf;
579 * Description: Clear NIC TSF counter
580 * Clear local TSF counter
584 * priv - The adapter to be read
586 * Return Value: true if success; otherwise false
589 bool vnt_clear_current_tsf(struct vnt_private *priv)
592 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
594 priv->current_tsf = 0;
600 * Description: Read NIC TSF counter
601 * Get NEXTTBTT from adjusted TSF and Beacon Interval
605 * tsf - Current TSF counter
606 * beacon_interval - Beacon Interval
608 * tsf - Current TSF counter
610 * Return Value: TSF value of next Beacon
613 u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)
617 beacon_int = beacon_interval * 1024;
620 * ((local_current_TSF / beacon_interval) + 1) * beacon_interval
623 do_div(tsf, beacon_int);
632 * Description: Set NIC TSF counter for first Beacon time
633 * Get NEXTTBTT from adjusted TSF and Beacon Interval
638 * beacon_interval - Beacon Interval
645 void vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)
650 vnt_clear_current_tsf(priv);
652 next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);
654 data[0] = (u8)next_tbtt;
655 data[1] = (u8)(next_tbtt >> 8);
656 data[2] = (u8)(next_tbtt >> 16);
657 data[3] = (u8)(next_tbtt >> 24);
658 data[4] = (u8)(next_tbtt >> 32);
659 data[5] = (u8)(next_tbtt >> 40);
660 data[6] = (u8)(next_tbtt >> 48);
661 data[7] = (u8)(next_tbtt >> 56);
663 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
664 MESSAGE_REQUEST_TBTT, 0, 8, data);
668 * Description: Sync NIC TSF counter for Beacon time
669 * Get NEXTTBTT and write to HW
673 * priv - The adapter to be set
674 * tsf - Current TSF counter
675 * beacon_interval - Beacon Interval
682 void vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,
687 tsf = vnt_get_next_tbtt(tsf, beacon_interval);
690 data[1] = (u8)(tsf >> 8);
691 data[2] = (u8)(tsf >> 16);
692 data[3] = (u8)(tsf >> 24);
693 data[4] = (u8)(tsf >> 32);
694 data[5] = (u8)(tsf >> 40);
695 data[6] = (u8)(tsf >> 48);
696 data[7] = (u8)(tsf >> 56);
698 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
699 MESSAGE_REQUEST_TBTT, 0, 8, data);
701 dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);
705 * Description: Turn off Radio power
709 * priv - The adapter to be turned off
713 * Return Value: true if success; otherwise false
716 int vnt_radio_power_off(struct vnt_private *priv)
720 switch (priv->rf_type) {
727 vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,
728 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
732 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
734 vnt_set_deep_sleep(priv);
736 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
742 * Description: Turn on Radio power
746 * priv - The adapter to be turned on
750 * Return Value: true if success; otherwise false
753 int vnt_radio_power_on(struct vnt_private *priv)
757 vnt_exit_deep_sleep(priv);
759 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
761 switch (priv->rf_type) {
768 vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
769 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
773 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
778 void vnt_set_bss_mode(struct vnt_private *priv)
780 if (priv->rf_type == RF_AIROHA7230 && priv->bb_type == BB_TYPE_11A)
781 vnt_mac_set_bb_type(priv, BB_TYPE_11G);
783 vnt_mac_set_bb_type(priv, priv->bb_type);
785 priv->packet_type = vnt_get_pkt_type(priv);
787 if (priv->bb_type == BB_TYPE_11A)
788 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x03);
789 else if (priv->bb_type == BB_TYPE_11B)
790 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x02);
791 else if (priv->bb_type == BB_TYPE_11G)
792 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x08);
794 vnt_update_ifs(priv);
795 vnt_set_rspinf(priv, (u8)priv->bb_type);
797 if (priv->bb_type == BB_TYPE_11A) {
798 if (priv->rf_type == RF_AIROHA7230) {
799 priv->bb_vga[0] = 0x20;
801 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
802 0xe7, priv->bb_vga[0]);
805 priv->bb_vga[2] = 0x10;
806 priv->bb_vga[3] = 0x10;
808 if (priv->rf_type == RF_AIROHA7230) {
809 priv->bb_vga[0] = 0x1c;
811 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
812 0xe7, priv->bb_vga[0]);
815 priv->bb_vga[2] = 0x0;
816 priv->bb_vga[3] = 0x0;
819 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);