1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
7 * Purpose: Provide functions to setup NIC operation mode
9 * vnt_set_rspinf - Set RSPINF
10 * vnt_update_ifs - Update slotTime,SIFS,DIFS, and EIFS
11 * vnt_update_top_rates - Update BasicTopRate
12 * vnt_add_basic_rate - Add to BasicRateSet
13 * vnt_ofdm_min_rate - Check if any OFDM rate is in BasicRateSet
14 * vnt_get_tsf_offset - Calculate TSFOffset
15 * vnt_get_current_tsf - Read Current NIC TSF counter
16 * vnt_get_next_tbtt - Calculate Next Beacon TSF counter
17 * vnt_reset_next_tbtt - Set NIC Beacon time
18 * vnt_update_next_tbtt - Sync. NIC Beacon time
19 * vnt_radio_power_off - Turn Off NIC Radio Power
20 * vnt_radio_power_on - Turn On NIC Radio Power
23 * 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.
24 * 08-26-2003 Kyle Hsu: Modify the definition type of dwIoBase.
25 * 09-01-2003 Bryan YC Fan: Add vnt_update_ifs().
29 #include <linux/bitops.h>
30 #include <linux/errno.h>
41 /* const u16 cw_rxbcntsf_off[MAX_RATE] =
42 * {17, 34, 96, 192, 34, 23, 17, 11, 8, 5, 4, 3};
45 static const u16 cw_rxbcntsf_off[MAX_RATE] = {
46 192, 96, 34, 17, 34, 23, 17, 11, 8, 5, 4, 3
49 int vnt_set_channel(struct vnt_private *priv, u32 connection_channel)
53 if (connection_channel > CB_MAX_CHANNEL || !connection_channel)
57 vnt_mac_reg_bits_on(priv, MAC_REG_MACCR, MACCR_CLRNAV);
59 /* Set Channel[7] = 0 to tell H/W channel is changing now. */
60 vnt_mac_reg_bits_off(priv, MAC_REG_CHANNEL,
61 (BIT(7) | BIT(5) | BIT(4)));
63 ret = vnt_control_out(priv, MESSAGE_TYPE_SELECT_CHANNEL,
64 connection_channel, 0, 0, NULL);
68 return vnt_control_out_u8(priv, MESSAGE_REQUEST_MACREG, MAC_REG_CHANNEL,
69 (u8)(connection_channel | 0x80));
72 static const u8 vnt_rspinf_b_short_table[] = {
73 0x70, 0x00, 0x00, 0x00, 0x38, 0x00, 0x09, 0x00,
74 0x15, 0x00, 0x0a, 0x00, 0x0b, 0x00, 0x0b, 0x80
77 static const u8 vnt_rspinf_b_long_table[] = {
78 0x70, 0x00, 0x00, 0x00, 0x38, 0x00, 0x01, 0x00,
79 0x15, 0x00, 0x02, 0x00, 0x0b, 0x00, 0x03, 0x80
82 static const u8 vnt_rspinf_a_table[] = {
83 0x9b, 0x18, 0x9f, 0x10, 0x9a, 0x0a, 0x9e, 0x08, 0x99,
84 0x08, 0x9d, 0x04, 0x98, 0x04, 0x9c, 0x04, 0x9c, 0x04
87 static const u8 vnt_rspinf_gb_table[] = {
88 0x8b, 0x1e, 0x8f, 0x16, 0x8a, 0x12, 0x8e, 0x0e, 0x89,
89 0x0e, 0x8d, 0x0a, 0x88, 0x0a, 0x8c, 0x0a, 0x8c, 0x0a
92 int vnt_set_rspinf(struct vnt_private *priv, u8 bb_type)
98 if (priv->preamble_type) {
99 data = vnt_rspinf_b_short_table;
100 len = ARRAY_SIZE(vnt_rspinf_b_short_table);
102 data = vnt_rspinf_b_long_table;
103 len = ARRAY_SIZE(vnt_rspinf_b_long_table);
106 /* RSPINF_b_1 to RSPINF_b_11 */
107 ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_B_1,
108 MESSAGE_REQUEST_MACREG, len, data);
112 if (bb_type == BB_TYPE_11A) {
113 data = vnt_rspinf_a_table;
114 len = ARRAY_SIZE(vnt_rspinf_a_table);
116 data = vnt_rspinf_gb_table;
117 len = ARRAY_SIZE(vnt_rspinf_gb_table);
120 /* RSPINF_a_6 to RSPINF_a_72 */
121 return vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_RSPINF_A_6,
122 MESSAGE_REQUEST_MACREG, len, data);
125 int vnt_update_ifs(struct vnt_private *priv)
131 if (priv->packet_type == PK_TYPE_11A) {
132 priv->slot = C_SLOT_SHORT;
133 priv->sifs = C_SIFS_A;
134 priv->difs = C_SIFS_A + 2 * C_SLOT_SHORT;
137 priv->sifs = C_SIFS_BG;
139 if (priv->short_slot_time) {
140 priv->slot = C_SLOT_SHORT;
143 priv->slot = C_SLOT_LONG;
147 priv->difs = C_SIFS_BG + 2 * priv->slot;
152 data[0] = (u8)priv->sifs;
153 data[1] = (u8)priv->difs;
154 data[2] = (u8)priv->eifs;
155 data[3] = (u8)priv->slot;
157 ret = vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_SIFS,
158 MESSAGE_REQUEST_MACREG, 4, &data[0]);
164 return vnt_control_out(priv, MESSAGE_TYPE_WRITE, MAC_REG_CWMAXMIN0,
165 MESSAGE_REQUEST_MACREG, 1, &max_min);
168 void vnt_update_top_rates(struct vnt_private *priv)
172 pos = fls(priv->basic_rates & GENMASK(RATE_54M, RATE_6M));
173 priv->top_ofdm_basic_rate = pos ? (pos - 1) : RATE_24M;
175 pos = fls(priv->basic_rates & GENMASK(RATE_11M, RATE_1M));
176 priv->top_cck_basic_rate = pos ? (pos - 1) : RATE_1M;
179 bool vnt_ofdm_min_rate(struct vnt_private *priv)
181 return priv->basic_rates & GENMASK(RATE_54M, RATE_6M) ? true : false;
184 u8 vnt_get_pkt_type(struct vnt_private *priv)
186 if (priv->bb_type == BB_TYPE_11A || priv->bb_type == BB_TYPE_11B)
187 return (u8)priv->bb_type;
188 else if (vnt_ofdm_min_rate(priv))
194 * Description: Calculate TSF offset of two TSF input
195 * Get TSF Offset from RxBCN's TSF and local TSF
200 * tsf1 - Rx BCN's TSF
205 * Return Value: TSF Offset value
208 u64 vnt_get_tsf_offset(u8 rx_rate, u64 tsf1, u64 tsf2)
210 return tsf1 - tsf2 - (u64)cw_rxbcntsf_off[rx_rate % MAX_RATE];
213 int vnt_adjust_tsf(struct vnt_private *priv, u8 rx_rate,
214 u64 time_stamp, u64 local_tsf)
219 tsf_offset = vnt_get_tsf_offset(rx_rate, time_stamp, local_tsf);
221 data[0] = (u8)tsf_offset;
222 data[1] = (u8)(tsf_offset >> 8);
223 data[2] = (u8)(tsf_offset >> 16);
224 data[3] = (u8)(tsf_offset >> 24);
225 data[4] = (u8)(tsf_offset >> 32);
226 data[5] = (u8)(tsf_offset >> 40);
227 data[6] = (u8)(tsf_offset >> 48);
228 data[7] = (u8)(tsf_offset >> 56);
230 return vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
231 MESSAGE_REQUEST_TSF, 0, 8, data);
235 * Description: Read NIC TSF counter
236 * Get local TSF counter
240 * priv - The adapter to be read
242 * current_tsf - Current TSF counter
244 * Return Value: true if success; otherwise false
247 bool vnt_get_current_tsf(struct vnt_private *priv, u64 *current_tsf)
249 *current_tsf = priv->current_tsf;
255 * Description: Clear NIC TSF counter
256 * Clear local TSF counter
260 * priv - The adapter to be read
262 * Return Value: true if success; otherwise false
265 bool vnt_clear_current_tsf(struct vnt_private *priv)
267 vnt_mac_reg_bits_on(priv, MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
269 priv->current_tsf = 0;
275 * Description: Read NIC TSF counter
276 * Get NEXTTBTT from adjusted TSF and Beacon Interval
280 * tsf - Current TSF counter
281 * beacon_interval - Beacon Interval
283 * tsf - Current TSF counter
285 * Return Value: TSF value of next Beacon
288 u64 vnt_get_next_tbtt(u64 tsf, u16 beacon_interval)
292 beacon_int = beacon_interval * 1024;
295 * ((local_current_TSF / beacon_interval) + 1) * beacon_interval
298 do_div(tsf, beacon_int);
306 int vnt_reset_next_tbtt(struct vnt_private *priv, u16 beacon_interval)
311 vnt_clear_current_tsf(priv);
313 next_tbtt = vnt_get_next_tbtt(next_tbtt, beacon_interval);
315 data[0] = (u8)next_tbtt;
316 data[1] = (u8)(next_tbtt >> 8);
317 data[2] = (u8)(next_tbtt >> 16);
318 data[3] = (u8)(next_tbtt >> 24);
319 data[4] = (u8)(next_tbtt >> 32);
320 data[5] = (u8)(next_tbtt >> 40);
321 data[6] = (u8)(next_tbtt >> 48);
322 data[7] = (u8)(next_tbtt >> 56);
324 return vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
325 MESSAGE_REQUEST_TBTT, 0, 8, data);
328 int vnt_update_next_tbtt(struct vnt_private *priv, u64 tsf,
334 tsf = vnt_get_next_tbtt(tsf, beacon_interval);
337 data[1] = (u8)(tsf >> 8);
338 data[2] = (u8)(tsf >> 16);
339 data[3] = (u8)(tsf >> 24);
340 data[4] = (u8)(tsf >> 32);
341 data[5] = (u8)(tsf >> 40);
342 data[6] = (u8)(tsf >> 48);
343 data[7] = (u8)(tsf >> 56);
345 ret = vnt_control_out(priv, MESSAGE_TYPE_SET_TSFTBTT,
346 MESSAGE_REQUEST_TBTT, 0, 8, data);
350 dev_dbg(&priv->usb->dev, "%s TBTT: %8llx\n", __func__, tsf);
355 * Description: Turn off Radio power
359 * priv - The adapter to be turned off
363 * Return Value: true if success; otherwise false
366 int vnt_radio_power_off(struct vnt_private *priv)
370 switch (priv->rf_type) {
377 ret = vnt_mac_reg_bits_off(priv, MAC_REG_SOFTPWRCTL,
386 ret = vnt_mac_reg_bits_off(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
390 ret = vnt_set_deep_sleep(priv);
394 ret = vnt_mac_reg_bits_on(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
401 * Description: Turn on Radio power
405 * priv - The adapter to be turned on
409 * Return Value: true if success; otherwise false
412 int vnt_radio_power_on(struct vnt_private *priv)
416 ret = vnt_exit_deep_sleep(priv);
420 ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
424 switch (priv->rf_type) {
431 ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
438 return vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
441 int vnt_set_bss_mode(struct vnt_private *priv)
444 unsigned char type = priv->bb_type;
445 unsigned char data = 0;
446 unsigned char bb_vga_0 = 0x1c;
447 unsigned char bb_vga_2_3 = 0x00;
449 if (priv->rf_type == RF_AIROHA7230 && priv->bb_type == BB_TYPE_11A)
452 ret = vnt_mac_set_bb_type(priv, type);
456 priv->packet_type = vnt_get_pkt_type(priv);
458 if (priv->bb_type == BB_TYPE_11A) {
462 } else if (priv->bb_type == BB_TYPE_11B) {
464 } else if (priv->bb_type == BB_TYPE_11G) {
469 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
475 ret = vnt_update_ifs(priv);
479 ret = vnt_set_rspinf(priv, priv->bb_type);
483 if (priv->rf_type == RF_AIROHA7230) {
484 priv->bb_vga[0] = bb_vga_0;
486 ret = vnt_control_out_u8(priv, MESSAGE_REQUEST_BBREG,
487 0xe7, priv->bb_vga[0]);
492 priv->bb_vga[2] = bb_vga_2_3;
493 priv->bb_vga[3] = bb_vga_2_3;
495 return vnt_set_vga_gain_offset(priv, priv->bb_vga[0]);