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};
53 static const u16 cwRXBCNTSFOff[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)
70 if (connection_channel > CB_MAX_CHANNEL || !connection_channel)
74 vnt_mac_reg_bits_on(priv, MAC_REG_MACCR, MACCR_CLRNAV);
76 /* Set Channel[7] = 0 to tell H/W channel is changing now. */
77 vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL, 0xb0);
79 vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,
80 connection_channel, 0, 0, NULL);
82 vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,
83 (u8)(connection_channel | 0x80));
87 * Description: Get CCK mode basic rate
91 * priv - The adapter to be set
92 * rate_idx - Receiving data rate
96 * Return Value: response Control frame rate
99 static u16 vnt_get_cck_rate(struct vnt_private *priv, u16 rate_idx)
103 while (ui > RATE_1M) {
104 if (priv->basic_rates & (1 << ui))
113 * Description: Get OFDM mode basic rate
117 * priv - The adapter to be set
118 * rate_idx - Receiving data rate
122 * Return Value: response Control frame rate
125 static u16 vnt_get_ofdm_rate(struct vnt_private *priv, u16 rate_idx)
129 dev_dbg(&priv->usb->dev, "%s basic rate: %d\n",
130 __func__, priv->basic_rates);
132 if (!vnt_ofdm_min_rate(priv)) {
133 dev_dbg(&priv->usb->dev, "%s (NO OFDM) %d\n",
135 if (rate_idx > RATE_24M)
140 while (ui > RATE_11M) {
141 if (priv->basic_rates & (1 << ui)) {
142 dev_dbg(&priv->usb->dev, "%s rate: %d\n",
149 dev_dbg(&priv->usb->dev, "%s basic rate: 24M\n", __func__);
155 * Description: Calculate TxRate and RsvTime fields for RSPINF in OFDM mode.
160 * bb_type - Tx Packet type
162 * tx_rate - pointer to RSPINF TxRate field
163 * rsv_time- pointer to RSPINF RsvTime field
168 static void vnt_calculate_ofdm_rate(u16 rate, u8 bb_type,
169 u8 *tx_rate, u8 *rsv_time)
174 if (bb_type == BB_TYPE_11A) {
183 if (bb_type == BB_TYPE_11A) {
192 if (bb_type == BB_TYPE_11A) {
201 if (bb_type == BB_TYPE_11A) {
210 if (bb_type == BB_TYPE_11A) {
219 if (bb_type == BB_TYPE_11A) {
228 if (bb_type == BB_TYPE_11A) {
238 if (bb_type == BB_TYPE_11A) {
250 * Description: Set RSPINF
254 * pDevice - The adapter to be set
258 * Return Value: None.
262 void vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)
264 struct vnt_phy_field phy[4];
265 u8 tx_rate[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0}; /* For OFDM */
266 u8 rsv_time[9] = {0, 0, 0, 0, 0, 0, 0, 0, 0};
271 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_1M),
272 PK_TYPE_11B, &phy[0]);
275 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_2M),
276 PK_TYPE_11B, &phy[1]);
279 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_5M),
280 PK_TYPE_11B, &phy[2]);
283 vnt_get_phy_field(priv, 14, vnt_get_cck_rate(priv, RATE_11M),
284 PK_TYPE_11B, &phy[3]);
287 vnt_calculate_ofdm_rate(RATE_6M, bb_type, &tx_rate[0], &rsv_time[0]);
290 vnt_calculate_ofdm_rate(RATE_9M, bb_type, &tx_rate[1], &rsv_time[1]);
293 vnt_calculate_ofdm_rate(RATE_12M, bb_type, &tx_rate[2], &rsv_time[2]);
296 vnt_calculate_ofdm_rate(RATE_18M, bb_type, &tx_rate[3], &rsv_time[3]);
299 vnt_calculate_ofdm_rate(RATE_24M, bb_type, &tx_rate[4], &rsv_time[4]);
302 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_36M),
303 bb_type, &tx_rate[5], &rsv_time[5]);
306 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_48M),
307 bb_type, &tx_rate[6], &rsv_time[6]);
310 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
311 bb_type, &tx_rate[7], &rsv_time[7]);
314 vnt_calculate_ofdm_rate(vnt_get_ofdm_rate(priv, RATE_54M),
315 bb_type, &tx_rate[8], &rsv_time[8]);
317 put_unaligned(phy[0].len, (u16 *)&data[0]);
318 data[2] = phy[0].signal;
319 data[3] = phy[0].service;
321 put_unaligned(phy[1].len, (u16 *)&data[4]);
322 data[6] = phy[1].signal;
323 data[7] = phy[1].service;
325 put_unaligned(phy[2].len, (u16 *)&data[8]);
326 data[10] = phy[2].signal;
327 data[11] = phy[2].service;
329 put_unaligned(phy[3].len, (u16 *)&data[12]);
330 data[14] = phy[3].signal;
331 data[15] = phy[3].service;
333 for (i = 0; i < 9; i++) {
334 data[16 + i * 2] = tx_rate[i];
335 data[16 + i * 2 + 1] = rsv_time[i];
338 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_B_1,
339 MESSAGE_REQUEST_MACREG, 34, &data[0]);
343 * Description: Update IFS
347 * priv - The adapter to be set
351 * Return Value: None.
354 void vnt_update_ifs(struct vnt_private *priv)
359 if (priv->packet_type == PK_TYPE_11A) {
360 priv->slot = C_SLOT_SHORT;
361 priv->sifs = C_SIFS_A;
362 priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;
364 } else if (priv->packet_type == PK_TYPE_11B) {
365 priv->slot = C_SLOT_LONG;
366 priv->sifs = C_SIFS_BG;
367 priv->difs = C_SIFS_BG + 2 * C_SLOT_LONG;
369 } else {/* PK_TYPE_11GA & PK_TYPE_11GB */
370 bool ofdm_rate = false;
373 priv->sifs = C_SIFS_BG;
375 if (priv->short_slot_time)
376 priv->slot = C_SLOT_SHORT;
378 priv->slot = C_SLOT_LONG;
380 priv->difs = C_SIFS_BG + 2 * priv->slot;
382 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
383 if (priv->basic_rates & ((u32)(0x1 << ii))) {
397 switch (priv->rf_type) {
399 if (priv->bb_type != BB_TYPE_11B) {
407 if (priv->bb_type != BB_TYPE_11B)
416 if (priv->bb_type == BB_TYPE_11A) {
427 data[0] = (u8)priv->sifs;
428 data[1] = (u8)priv->difs;
429 data[2] = (u8)priv->eifs;
430 data[3] = (u8)priv->slot;
432 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,
433 MESSAGE_REQUEST_MACREG, 4, &data[0]);
437 vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,
438 MESSAGE_REQUEST_MACREG, 1, &max_min);
441 void vnt_update_top_rates(struct vnt_private *priv)
443 u8 top_ofdm = RATE_24M, top_cck = RATE_1M;
446 /*Determines the highest basic rate.*/
447 for (i = RATE_54M; i >= RATE_6M; i--) {
448 if (priv->basic_rates & (u16)(1 << i)) {
454 priv->top_ofdm_basic_rate = top_ofdm;
456 for (i = RATE_11M;; i--) {
457 if (priv->basic_rates & (u16)(1 << i)) {
465 priv->top_cck_basic_rate = top_cck;
468 int vnt_ofdm_min_rate(struct vnt_private *priv)
472 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
473 if ((priv->basic_rates) & ((u16)BIT(ii)))
480 u8 vnt_get_pkt_type(struct vnt_private *priv)
483 if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)
484 return (u8)priv->bb_type;
485 else if (vnt_ofdm_min_rate(priv))
491 * Description: Calculate TSF offset of two TSF input
492 * Get TSF Offset from RxBCN's TSF and local TSF
497 * tsf1 - Rx BCN's TSF
502 * Return Value: TSF Offset value
505 u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)
510 rx_bcn_offset = cwRXBCNTSFOff[rx_rate % MAX_RATE];
512 tsf2 += (u64)rx_bcn_offset;
514 tsf_offset = tsf1 - tsf2;
520 * Description: Sync. TSF counter to BSS
521 * Get TSF offset and write to HW
525 * priv - The adapter to be sync.
526 * time_stamp - Rx BCN's TSF
527 * local_tsf - Local TSF
534 void vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,
535 u64 time_stamp, u64 local_tsf)
540 tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);
542 data[0] = (u8)tsf_offset;
543 data[1] = (u8)(tsf_offset >> 8);
544 data[2] = (u8)(tsf_offset >> 16);
545 data[3] = (u8)(tsf_offset >> 24);
546 data[4] = (u8)(tsf_offset >> 32);
547 data[5] = (u8)(tsf_offset >> 40);
548 data[6] = (u8)(tsf_offset >> 48);
549 data[7] = (u8)(tsf_offset >> 56);
551 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
552 MESSAGE_REQUEST_TSF, 0, 8, data);
555 * Description: Read NIC TSF counter
556 * Get local TSF counter
560 * priv - The adapter to be read
562 * current_tsf - Current TSF counter
564 * Return Value: true if success; otherwise false
567 bool vnt_get_current_tsf(struct vnt_private *priv, u64 *current_tsf)
570 *current_tsf = priv->current_tsf;
576 * Description: Clear NIC TSF counter
577 * Clear local TSF counter
581 * priv - The adapter to be read
583 * Return Value: true if success; otherwise false
586 bool vnt_clear_current_tsf(struct vnt_private *priv)
589 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
591 priv->current_tsf = 0;
597 * Description: Read NIC TSF counter
598 * Get NEXTTBTT from adjusted TSF and Beacon Interval
602 * tsf - Current TSF counter
603 * beacon_interval - Beacon Interval
605 * tsf - Current TSF counter
607 * Return Value: TSF value of next Beacon
610 u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)
614 beacon_int = beacon_interval * 1024;
617 * ((local_current_TSF / beacon_interval) + 1) * beacon_interval
620 do_div(tsf, beacon_int);
629 * Description: Set NIC TSF counter for first Beacon time
630 * Get NEXTTBTT from adjusted TSF and Beacon Interval
635 * beacon_interval - Beacon Interval
642 void vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)
647 vnt_clear_current_tsf(priv);
649 next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);
651 data[0] = (u8)next_tbtt;
652 data[1] = (u8)(next_tbtt >> 8);
653 data[2] = (u8)(next_tbtt >> 16);
654 data[3] = (u8)(next_tbtt >> 24);
655 data[4] = (u8)(next_tbtt >> 32);
656 data[5] = (u8)(next_tbtt >> 40);
657 data[6] = (u8)(next_tbtt >> 48);
658 data[7] = (u8)(next_tbtt >> 56);
660 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
661 MESSAGE_REQUEST_TBTT, 0, 8, data);
665 * Description: Sync NIC TSF counter for Beacon time
666 * Get NEXTTBTT and write to HW
670 * priv - The adapter to be set
671 * tsf - Current TSF counter
672 * beacon_interval - Beacon Interval
679 void vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,
684 tsf = vnt_get_next_tbtt(tsf, beacon_interval);
687 data[1] = (u8)(tsf >> 8);
688 data[2] = (u8)(tsf >> 16);
689 data[3] = (u8)(tsf >> 24);
690 data[4] = (u8)(tsf >> 32);
691 data[5] = (u8)(tsf >> 40);
692 data[6] = (u8)(tsf >> 48);
693 data[7] = (u8)(tsf >> 56);
695 vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
696 MESSAGE_REQUEST_TBTT, 0, 8, data);
698 dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);
702 * Description: Turn off Radio power
706 * priv - The adapter to be turned off
710 * Return Value: true if success; otherwise false
713 int vnt_radio_power_off(struct vnt_private *priv)
717 switch (priv->rf_type) {
724 vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,
725 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
729 vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
731 vnt_set_deep_sleep(priv);
733 vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
739 * Description: Turn on Radio power
743 * priv - The adapter to be turned on
747 * Return Value: true if success; otherwise false
750 int vnt_radio_power_on(struct vnt_private *priv)
754 vnt_exit_deep_sleep(priv);
756 vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
758 switch (priv->rf_type) {
765 vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
766 (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
770 vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
775 void vnt_set_bss_mode(struct vnt_private *priv)
777 if (priv->rf_type == RF_AIROHA7230 && priv->bb_type == BB_TYPE_11A)
778 vnt_mac_set_bb_type(priv, BB_TYPE_11G);
780 vnt_mac_set_bb_type(priv, priv->bb_type);
782 priv->packet_type = vnt_get_pkt_type(priv);
784 if (priv->bb_type == BB_TYPE_11A)
785 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x03);
786 else if (priv->bb_type == BB_TYPE_11B)
787 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x02);
788 else if (priv->bb_type == BB_TYPE_11G)
789 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG, 0x88, 0x08);
791 vnt_update_ifs(priv);
792 vnt_set_rspinf(priv, (u8)priv->bb_type);
794 if (priv->bb_type == BB_TYPE_11A) {
795 if (priv->rf_type == RF_AIROHA7230) {
796 priv->bb_vga[0] = 0x20;
798 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
799 0xe7, priv->bb_vga[0]);
802 priv->bb_vga[2] = 0x10;
803 priv->bb_vga[3] = 0x10;
805 if (priv->rf_type == RF_AIROHA7230) {
806 priv->bb_vga[0] = 0x1c;
808 vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
809 0xe7, priv->bb_vga[0]);
812 priv->bb_vga[2] = 0x0;
813 priv->bb_vga[3] = 0x0;
816 vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);