1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
4 * All rights reserved.
5 *
6 * Purpose: Provide functions to setup NIC operation mode
7 * Functions:
8 * s_vSafeResetTx - Rest Tx
9 * CARDvSetRSPINF - Set RSPINF
10 * CARDvUpdateBasicTopRate - Update BasicTopRate
11 * CARDbAddBasicRate - Add to BasicRateSet
12 * CARDbIsOFDMinBasicRate - Check if any OFDM rate is in BasicRateSet
13 * CARDqGetTSFOffset - Calculate TSFOffset
14 * vt6655_get_current_tsf - Read Current NIC TSF counter
15 * CARDqGetNextTBTT - Calculate Next Beacon TSF counter
16 * CARDvSetFirstNextTBTT - Set NIC Beacon time
17 * CARDvUpdateNextTBTT - Sync. NIC Beacon time
18 * CARDbRadioPowerOff - Turn Off NIC Radio Power
19 *
20 * Revision History:
21 * 06-10-2003 Bryan YC Fan: Re-write codes to support VT3253 spec.
22 * 08-26-2003 Kyle Hsu: Modify the definition type of iobase.
23 * 09-01-2003 Bryan YC Fan: Add vUpdateIFS().
24 *
25 */
26
27 #include "card.h"
28 #include "baseband.h"
29 #include "mac.h"
30 #include "desc.h"
31 #include "rf.h"
32 #include "power.h"
33
34 /*--------------------- Static Definitions -------------------------*/
35
36 #define C_SIFS_A 16 /* micro sec. */
37 #define C_SIFS_BG 10
38
39 #define C_EIFS 80 /* micro sec. */
40
41 #define C_SLOT_SHORT 9 /* micro sec. */
42 #define C_SLOT_LONG 20
43
44 #define C_CWMIN_A 15 /* slot time */
45 #define C_CWMIN_B 31
46
47 #define C_CWMAX 1023 /* slot time */
48
49 #define WAIT_BEACON_TX_DOWN_TMO 3 /* Times */
50
51 /*--------------------- Static Variables --------------------------*/
52
53 static const unsigned short cwRXBCNTSFOff[MAX_RATE] = {
54 17, 17, 17, 17, 34, 23, 17, 11, 8, 5, 4, 3};
55
56 /*--------------------- Static Functions --------------------------*/
57
vt6655_mac_set_bb_type(void __iomem * iobase,u32 mask)58 static void vt6655_mac_set_bb_type(void __iomem *iobase, u32 mask)
59 {
60 u32 reg_value;
61
62 reg_value = ioread32(iobase + MAC_REG_ENCFG);
63 reg_value = reg_value & ~ENCFG_BBTYPE_MASK;
64 reg_value = reg_value | mask;
65 iowrite32(reg_value, iobase + MAC_REG_ENCFG);
66 }
67
68 /*--------------------- Export Functions --------------------------*/
69
70 /*
71 * Description: Calculate TxRate and RsvTime fields for RSPINF in OFDM mode.
72 *
73 * Parameters:
74 * In:
75 * wRate - Tx Rate
76 * byPktType - Tx Packet type
77 * Out:
78 * pbyTxRate - pointer to RSPINF TxRate field
79 * pbyRsvTime - pointer to RSPINF RsvTime field
80 *
81 * Return Value: none
82 */
s_vCalculateOFDMRParameter(unsigned char rate,u8 bb_type,unsigned char * pbyTxRate,unsigned char * pbyRsvTime)83 static void s_vCalculateOFDMRParameter(unsigned char rate,
84 u8 bb_type,
85 unsigned char *pbyTxRate,
86 unsigned char *pbyRsvTime)
87 {
88 switch (rate) {
89 case RATE_6M:
90 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
91 *pbyTxRate = 0x9B;
92 *pbyRsvTime = 44;
93 } else {
94 *pbyTxRate = 0x8B;
95 *pbyRsvTime = 50;
96 }
97 break;
98
99 case RATE_9M:
100 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
101 *pbyTxRate = 0x9F;
102 *pbyRsvTime = 36;
103 } else {
104 *pbyTxRate = 0x8F;
105 *pbyRsvTime = 42;
106 }
107 break;
108
109 case RATE_12M:
110 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
111 *pbyTxRate = 0x9A;
112 *pbyRsvTime = 32;
113 } else {
114 *pbyTxRate = 0x8A;
115 *pbyRsvTime = 38;
116 }
117 break;
118
119 case RATE_18M:
120 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
121 *pbyTxRate = 0x9E;
122 *pbyRsvTime = 28;
123 } else {
124 *pbyTxRate = 0x8E;
125 *pbyRsvTime = 34;
126 }
127 break;
128
129 case RATE_36M:
130 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
131 *pbyTxRate = 0x9D;
132 *pbyRsvTime = 24;
133 } else {
134 *pbyTxRate = 0x8D;
135 *pbyRsvTime = 30;
136 }
137 break;
138
139 case RATE_48M:
140 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
141 *pbyTxRate = 0x98;
142 *pbyRsvTime = 24;
143 } else {
144 *pbyTxRate = 0x88;
145 *pbyRsvTime = 30;
146 }
147 break;
148
149 case RATE_54M:
150 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
151 *pbyTxRate = 0x9C;
152 *pbyRsvTime = 24;
153 } else {
154 *pbyTxRate = 0x8C;
155 *pbyRsvTime = 30;
156 }
157 break;
158
159 case RATE_24M:
160 default:
161 if (bb_type == BB_TYPE_11A) { /* 5GHZ */
162 *pbyTxRate = 0x99;
163 *pbyRsvTime = 28;
164 } else {
165 *pbyTxRate = 0x89;
166 *pbyRsvTime = 34;
167 }
168 break;
169 }
170 }
171
172 /*--------------------- Export Functions --------------------------*/
173
174 /*
175 * Description: Update IFS
176 *
177 * Parameters:
178 * In:
179 * priv - The adapter to be set
180 * Out:
181 * none
182 *
183 * Return Value: None.
184 */
CARDbSetPhyParameter(struct vnt_private * priv,u8 bb_type)185 bool CARDbSetPhyParameter(struct vnt_private *priv, u8 bb_type)
186 {
187 unsigned char byCWMaxMin = 0;
188 unsigned char bySlot = 0;
189 unsigned char bySIFS = 0;
190 unsigned char byDIFS = 0;
191 int i;
192
193 /* Set SIFS, DIFS, EIFS, SlotTime, CwMin */
194 if (bb_type == BB_TYPE_11A) {
195 vt6655_mac_set_bb_type(priv->port_offset, BB_TYPE_11A);
196 bb_write_embedded(priv, 0x88, 0x03);
197 bySlot = C_SLOT_SHORT;
198 bySIFS = C_SIFS_A;
199 byDIFS = C_SIFS_A + 2 * C_SLOT_SHORT;
200 byCWMaxMin = 0xA4;
201 } else if (bb_type == BB_TYPE_11B) {
202 vt6655_mac_set_bb_type(priv->port_offset, BB_TYPE_11B);
203 bb_write_embedded(priv, 0x88, 0x02);
204 bySlot = C_SLOT_LONG;
205 bySIFS = C_SIFS_BG;
206 byDIFS = C_SIFS_BG + 2 * C_SLOT_LONG;
207 byCWMaxMin = 0xA5;
208 } else { /* PK_TYPE_11GA & PK_TYPE_11GB */
209 vt6655_mac_set_bb_type(priv->port_offset, BB_TYPE_11G);
210 bb_write_embedded(priv, 0x88, 0x08);
211 bySIFS = C_SIFS_BG;
212
213 if (priv->short_slot_time) {
214 bySlot = C_SLOT_SHORT;
215 byDIFS = C_SIFS_BG + 2 * C_SLOT_SHORT;
216 } else {
217 bySlot = C_SLOT_LONG;
218 byDIFS = C_SIFS_BG + 2 * C_SLOT_LONG;
219 }
220
221 byCWMaxMin = 0xa4;
222
223 for (i = RATE_54M; i >= RATE_6M; i--) {
224 if (priv->basic_rates & ((u32)(0x1 << i))) {
225 byCWMaxMin |= 0x1;
226 break;
227 }
228 }
229 }
230
231 if (priv->byRFType == RF_RFMD2959) {
232 /*
233 * bcs TX_PE will reserve 3 us hardware's processing
234 * time here is 2 us.
235 */
236 bySIFS -= 3;
237 byDIFS -= 3;
238 /*
239 * TX_PE will reserve 3 us for MAX2829 A mode only, it is for
240 * better TX throughput; MAC will need 2 us to process, so the
241 * SIFS, DIFS can be shorter by 2 us.
242 */
243 }
244
245 if (priv->bySIFS != bySIFS) {
246 priv->bySIFS = bySIFS;
247 iowrite8(priv->bySIFS, priv->port_offset + MAC_REG_SIFS);
248 }
249 if (priv->byDIFS != byDIFS) {
250 priv->byDIFS = byDIFS;
251 iowrite8(priv->byDIFS, priv->port_offset + MAC_REG_DIFS);
252 }
253 if (priv->byEIFS != C_EIFS) {
254 priv->byEIFS = C_EIFS;
255 iowrite8(priv->byEIFS, priv->port_offset + MAC_REG_EIFS);
256 }
257 if (priv->bySlot != bySlot) {
258 priv->bySlot = bySlot;
259 iowrite8(priv->bySlot, priv->port_offset + MAC_REG_SLOT);
260
261 bb_set_short_slot_time(priv);
262 }
263 if (priv->byCWMaxMin != byCWMaxMin) {
264 priv->byCWMaxMin = byCWMaxMin;
265 iowrite8(priv->byCWMaxMin, priv->port_offset + MAC_REG_CWMAXMIN0);
266 }
267
268 priv->byPacketType = CARDbyGetPktType(priv);
269
270 CARDvSetRSPINF(priv, bb_type);
271
272 return true;
273 }
274
275 /*
276 * Description: Sync. TSF counter to BSS
277 * Get TSF offset and write to HW
278 *
279 * Parameters:
280 * In:
281 * priv - The adapter to be sync.
282 * byRxRate - data rate of receive beacon
283 * qwBSSTimestamp - Rx BCN's TSF
284 * qwLocalTSF - Local TSF
285 * Out:
286 * none
287 *
288 * Return Value: none
289 */
CARDbUpdateTSF(struct vnt_private * priv,unsigned char byRxRate,u64 qwBSSTimestamp)290 bool CARDbUpdateTSF(struct vnt_private *priv, unsigned char byRxRate,
291 u64 qwBSSTimestamp)
292 {
293 u64 local_tsf;
294 u64 qwTSFOffset = 0;
295
296 local_tsf = vt6655_get_current_tsf(priv);
297
298 if (qwBSSTimestamp != local_tsf) {
299 qwTSFOffset = CARDqGetTSFOffset(byRxRate, qwBSSTimestamp,
300 local_tsf);
301 /* adjust TSF, HW's TSF add TSF Offset reg */
302 qwTSFOffset = le64_to_cpu(qwTSFOffset);
303 iowrite32((u32)qwTSFOffset, priv->port_offset + MAC_REG_TSFOFST);
304 iowrite32((u32)(qwTSFOffset >> 32), priv->port_offset + MAC_REG_TSFOFST + 4);
305 vt6655_mac_reg_bits_on(priv->port_offset, MAC_REG_TFTCTL, TFTCTL_TSFSYNCEN);
306 }
307 return true;
308 }
309
310 /*
311 * Description: Set NIC TSF counter for first Beacon time
312 * Get NEXTTBTT from adjusted TSF and Beacon Interval
313 *
314 * Parameters:
315 * In:
316 * priv - The adapter to be set.
317 * wBeaconInterval - Beacon Interval
318 * Out:
319 * none
320 *
321 * Return Value: true if succeed; otherwise false
322 */
CARDbSetBeaconPeriod(struct vnt_private * priv,unsigned short wBeaconInterval)323 bool CARDbSetBeaconPeriod(struct vnt_private *priv,
324 unsigned short wBeaconInterval)
325 {
326 u64 qwNextTBTT;
327
328 qwNextTBTT = vt6655_get_current_tsf(priv); /* Get Local TSF counter */
329
330 qwNextTBTT = CARDqGetNextTBTT(qwNextTBTT, wBeaconInterval);
331
332 /* set HW beacon interval */
333 iowrite16(wBeaconInterval, priv->port_offset + MAC_REG_BI);
334 priv->wBeaconInterval = wBeaconInterval;
335 /* Set NextTBTT */
336 qwNextTBTT = le64_to_cpu(qwNextTBTT);
337 iowrite32((u32)qwNextTBTT, priv->port_offset + MAC_REG_NEXTTBTT);
338 iowrite32((u32)(qwNextTBTT >> 32), priv->port_offset + MAC_REG_NEXTTBTT + 4);
339 vt6655_mac_reg_bits_on(priv->port_offset, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
340
341 return true;
342 }
343
344 /*
345 * Description: Turn off Radio power
346 *
347 * Parameters:
348 * In:
349 * priv - The adapter to be turned off
350 * Out:
351 * none
352 *
353 */
CARDbRadioPowerOff(struct vnt_private * priv)354 void CARDbRadioPowerOff(struct vnt_private *priv)
355 {
356 if (priv->radio_off)
357 return;
358
359 switch (priv->byRFType) {
360 case RF_RFMD2959:
361 vt6655_mac_word_reg_bits_off(priv->port_offset, MAC_REG_SOFTPWRCTL,
362 SOFTPWRCTL_TXPEINV);
363 vt6655_mac_word_reg_bits_on(priv->port_offset, MAC_REG_SOFTPWRCTL,
364 SOFTPWRCTL_SWPE1);
365 break;
366
367 case RF_AIROHA:
368 case RF_AL2230S:
369 vt6655_mac_word_reg_bits_off(priv->port_offset, MAC_REG_SOFTPWRCTL,
370 SOFTPWRCTL_SWPE2);
371 vt6655_mac_word_reg_bits_off(priv->port_offset, MAC_REG_SOFTPWRCTL,
372 SOFTPWRCTL_SWPE3);
373 break;
374 }
375
376 vt6655_mac_reg_bits_off(priv->port_offset, MAC_REG_HOSTCR, HOSTCR_RXON);
377
378 bb_set_deep_sleep(priv, priv->local_id);
379
380 priv->radio_off = true;
381 pr_debug("chester power off\n");
382 vt6655_mac_reg_bits_on(priv->port_offset, MAC_REG_GPIOCTL0, LED_ACTSET); /* LED issue */
383 }
384
CARDvSafeResetTx(struct vnt_private * priv)385 void CARDvSafeResetTx(struct vnt_private *priv)
386 {
387 unsigned int uu;
388 struct vnt_tx_desc *pCurrTD;
389
390 /* initialize TD index */
391 priv->apTailTD[0] = &priv->apTD0Rings[0];
392 priv->apCurrTD[0] = &priv->apTD0Rings[0];
393
394 priv->apTailTD[1] = &priv->apTD1Rings[0];
395 priv->apCurrTD[1] = &priv->apTD1Rings[0];
396
397 for (uu = 0; uu < TYPE_MAXTD; uu++)
398 priv->iTDUsed[uu] = 0;
399
400 for (uu = 0; uu < priv->opts.tx_descs[0]; uu++) {
401 pCurrTD = &priv->apTD0Rings[uu];
402 pCurrTD->td0.owner = OWNED_BY_HOST;
403 /* init all Tx Packet pointer to NULL */
404 }
405 for (uu = 0; uu < priv->opts.tx_descs[1]; uu++) {
406 pCurrTD = &priv->apTD1Rings[uu];
407 pCurrTD->td0.owner = OWNED_BY_HOST;
408 /* init all Tx Packet pointer to NULL */
409 }
410
411 /* set MAC TD pointer */
412 vt6655_mac_set_curr_tx_desc_addr(TYPE_TXDMA0, priv, priv->td0_pool_dma);
413
414 vt6655_mac_set_curr_tx_desc_addr(TYPE_AC0DMA, priv, priv->td1_pool_dma);
415
416 /* set MAC Beacon TX pointer */
417 iowrite32((u32)priv->tx_beacon_dma, priv->port_offset + MAC_REG_BCNDMAPTR);
418 }
419
420 /*
421 * Description:
422 * Reset Rx
423 *
424 * Parameters:
425 * In:
426 * priv - Pointer to the adapter
427 * Out:
428 * none
429 *
430 * Return Value: none
431 */
CARDvSafeResetRx(struct vnt_private * priv)432 void CARDvSafeResetRx(struct vnt_private *priv)
433 {
434 unsigned int uu;
435 struct vnt_rx_desc *pDesc;
436
437 /* initialize RD index */
438 priv->pCurrRD[0] = &priv->aRD0Ring[0];
439 priv->pCurrRD[1] = &priv->aRD1Ring[0];
440
441 /* init state, all RD is chip's */
442 for (uu = 0; uu < priv->opts.rx_descs0; uu++) {
443 pDesc = &priv->aRD0Ring[uu];
444 pDesc->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
445 pDesc->rd0.owner = OWNED_BY_NIC;
446 pDesc->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
447 }
448
449 /* init state, all RD is chip's */
450 for (uu = 0; uu < priv->opts.rx_descs1; uu++) {
451 pDesc = &priv->aRD1Ring[uu];
452 pDesc->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
453 pDesc->rd0.owner = OWNED_BY_NIC;
454 pDesc->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
455 }
456
457 /* set perPkt mode */
458 iowrite32(RX_PERPKT, priv->port_offset + MAC_REG_RXDMACTL0);
459 iowrite32(RX_PERPKT, priv->port_offset + MAC_REG_RXDMACTL1);
460 /* set MAC RD pointer */
461 vt6655_mac_set_curr_rx_0_desc_addr(priv, priv->rd0_pool_dma);
462
463 vt6655_mac_set_curr_rx_1_desc_addr(priv, priv->rd1_pool_dma);
464 }
465
466 /*
467 * Description: Get response Control frame rate in CCK mode
468 *
469 * Parameters:
470 * In:
471 * priv - The adapter to be set
472 * wRateIdx - Receiving data rate
473 * Out:
474 * none
475 *
476 * Return Value: response Control frame rate
477 */
CARDwGetCCKControlRate(struct vnt_private * priv,unsigned short wRateIdx)478 static unsigned short CARDwGetCCKControlRate(struct vnt_private *priv,
479 unsigned short wRateIdx)
480 {
481 unsigned int ui = (unsigned int)wRateIdx;
482
483 while (ui > RATE_1M) {
484 if (priv->basic_rates & ((u32)0x1 << ui))
485 return (unsigned short)ui;
486
487 ui--;
488 }
489 return (unsigned short)RATE_1M;
490 }
491
492 /*
493 * Description: Get response Control frame rate in OFDM mode
494 *
495 * Parameters:
496 * In:
497 * priv - The adapter to be set
498 * wRateIdx - Receiving data rate
499 * Out:
500 * none
501 *
502 * Return Value: response Control frame rate
503 */
CARDwGetOFDMControlRate(struct vnt_private * priv,unsigned short wRateIdx)504 static unsigned short CARDwGetOFDMControlRate(struct vnt_private *priv,
505 unsigned short wRateIdx)
506 {
507 unsigned int ui = (unsigned int)wRateIdx;
508
509 pr_debug("BASIC RATE: %X\n", priv->basic_rates);
510
511 if (!CARDbIsOFDMinBasicRate((void *)priv)) {
512 pr_debug("%s:(NO OFDM) %d\n", __func__, wRateIdx);
513 if (wRateIdx > RATE_24M)
514 wRateIdx = RATE_24M;
515 return wRateIdx;
516 }
517 while (ui > RATE_11M) {
518 if (priv->basic_rates & ((u32)0x1 << ui)) {
519 pr_debug("%s : %d\n", __func__, ui);
520 return (unsigned short)ui;
521 }
522 ui--;
523 }
524 pr_debug("%s: 6M\n", __func__);
525 return (unsigned short)RATE_24M;
526 }
527
528 /*
529 * Description: Set RSPINF
530 *
531 * Parameters:
532 * In:
533 * priv - The adapter to be set
534 * Out:
535 * none
536 *
537 * Return Value: None.
538 */
CARDvSetRSPINF(struct vnt_private * priv,u8 bb_type)539 void CARDvSetRSPINF(struct vnt_private *priv, u8 bb_type)
540 {
541 union vnt_phy_field_swap phy;
542 unsigned char byTxRate, byRsvTime; /* For OFDM */
543 unsigned long flags;
544
545 spin_lock_irqsave(&priv->lock, flags);
546
547 /* Set to Page1 */
548 VT6655_MAC_SELECT_PAGE1(priv->port_offset);
549
550 /* RSPINF_b_1 */
551 vnt_get_phy_field(priv, 14,
552 CARDwGetCCKControlRate(priv, RATE_1M),
553 PK_TYPE_11B, &phy.field_read);
554
555 /* swap over to get correct write order */
556 swap(phy.swap[0], phy.swap[1]);
557
558 iowrite32(phy.field_write, priv->port_offset + MAC_REG_RSPINF_B_1);
559
560 /* RSPINF_b_2 */
561 vnt_get_phy_field(priv, 14,
562 CARDwGetCCKControlRate(priv, RATE_2M),
563 PK_TYPE_11B, &phy.field_read);
564
565 swap(phy.swap[0], phy.swap[1]);
566
567 iowrite32(phy.field_write, priv->port_offset + MAC_REG_RSPINF_B_2);
568
569 /* RSPINF_b_5 */
570 vnt_get_phy_field(priv, 14,
571 CARDwGetCCKControlRate(priv, RATE_5M),
572 PK_TYPE_11B, &phy.field_read);
573
574 swap(phy.swap[0], phy.swap[1]);
575
576 iowrite32(phy.field_write, priv->port_offset + MAC_REG_RSPINF_B_5);
577
578 /* RSPINF_b_11 */
579 vnt_get_phy_field(priv, 14,
580 CARDwGetCCKControlRate(priv, RATE_11M),
581 PK_TYPE_11B, &phy.field_read);
582
583 swap(phy.swap[0], phy.swap[1]);
584
585 iowrite32(phy.field_write, priv->port_offset + MAC_REG_RSPINF_B_11);
586
587 /* RSPINF_a_6 */
588 s_vCalculateOFDMRParameter(RATE_6M,
589 bb_type,
590 &byTxRate,
591 &byRsvTime);
592 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_6);
593 /* RSPINF_a_9 */
594 s_vCalculateOFDMRParameter(RATE_9M,
595 bb_type,
596 &byTxRate,
597 &byRsvTime);
598 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_9);
599 /* RSPINF_a_12 */
600 s_vCalculateOFDMRParameter(RATE_12M,
601 bb_type,
602 &byTxRate,
603 &byRsvTime);
604 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_12);
605 /* RSPINF_a_18 */
606 s_vCalculateOFDMRParameter(RATE_18M,
607 bb_type,
608 &byTxRate,
609 &byRsvTime);
610 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_18);
611 /* RSPINF_a_24 */
612 s_vCalculateOFDMRParameter(RATE_24M,
613 bb_type,
614 &byTxRate,
615 &byRsvTime);
616 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_24);
617 /* RSPINF_a_36 */
618 s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
619 RATE_36M),
620 bb_type,
621 &byTxRate,
622 &byRsvTime);
623 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_36);
624 /* RSPINF_a_48 */
625 s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
626 RATE_48M),
627 bb_type,
628 &byTxRate,
629 &byRsvTime);
630 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_48);
631 /* RSPINF_a_54 */
632 s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
633 RATE_54M),
634 bb_type,
635 &byTxRate,
636 &byRsvTime);
637 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_54);
638 /* RSPINF_a_72 */
639 s_vCalculateOFDMRParameter(CARDwGetOFDMControlRate((void *)priv,
640 RATE_54M),
641 bb_type,
642 &byTxRate,
643 &byRsvTime);
644 iowrite16(MAKEWORD(byTxRate, byRsvTime), priv->port_offset + MAC_REG_RSPINF_A_72);
645 /* Set to Page0 */
646 VT6655_MAC_SELECT_PAGE0(priv->port_offset);
647
648 spin_unlock_irqrestore(&priv->lock, flags);
649 }
650
CARDvUpdateBasicTopRate(struct vnt_private * priv)651 void CARDvUpdateBasicTopRate(struct vnt_private *priv)
652 {
653 unsigned char byTopOFDM = RATE_24M, byTopCCK = RATE_1M;
654 unsigned char ii;
655
656 /* Determines the highest basic rate. */
657 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
658 if ((priv->basic_rates) & ((u32)(1 << ii))) {
659 byTopOFDM = ii;
660 break;
661 }
662 }
663 priv->byTopOFDMBasicRate = byTopOFDM;
664
665 for (ii = RATE_11M;; ii--) {
666 if ((priv->basic_rates) & ((u32)(1 << ii))) {
667 byTopCCK = ii;
668 break;
669 }
670 if (ii == RATE_1M)
671 break;
672 }
673 priv->byTopCCKBasicRate = byTopCCK;
674 }
675
CARDbIsOFDMinBasicRate(struct vnt_private * priv)676 bool CARDbIsOFDMinBasicRate(struct vnt_private *priv)
677 {
678 int ii;
679
680 for (ii = RATE_54M; ii >= RATE_6M; ii--) {
681 if ((priv->basic_rates) & ((u32)BIT(ii)))
682 return true;
683 }
684 return false;
685 }
686
CARDbyGetPktType(struct vnt_private * priv)687 unsigned char CARDbyGetPktType(struct vnt_private *priv)
688 {
689 if (priv->byBBType == BB_TYPE_11A || priv->byBBType == BB_TYPE_11B)
690 return (unsigned char)priv->byBBType;
691 else if (CARDbIsOFDMinBasicRate((void *)priv))
692 return PK_TYPE_11GA;
693 else
694 return PK_TYPE_11GB;
695 }
696
697 /*
698 * Description: Calculate TSF offset of two TSF input
699 * Get TSF Offset from RxBCN's TSF and local TSF
700 *
701 * Parameters:
702 * In:
703 * priv - The adapter to be sync.
704 * qwTSF1 - Rx BCN's TSF
705 * qwTSF2 - Local TSF
706 * Out:
707 * none
708 *
709 * Return Value: TSF Offset value
710 */
CARDqGetTSFOffset(unsigned char byRxRate,u64 qwTSF1,u64 qwTSF2)711 u64 CARDqGetTSFOffset(unsigned char byRxRate, u64 qwTSF1, u64 qwTSF2)
712 {
713 unsigned short wRxBcnTSFOffst;
714
715 wRxBcnTSFOffst = cwRXBCNTSFOff[byRxRate % MAX_RATE];
716
717 qwTSF2 += (u64)wRxBcnTSFOffst;
718
719 return qwTSF1 - qwTSF2;
720 }
721
722 /*
723 * Description: Read NIC TSF counter
724 * Get local TSF counter
725 *
726 * Parameters:
727 * In:
728 * priv - The adapter to be read
729 * Out:
730 * none
731 *
732 * Return Value: Current TSF counter
733 */
vt6655_get_current_tsf(struct vnt_private * priv)734 u64 vt6655_get_current_tsf(struct vnt_private *priv)
735 {
736 void __iomem *iobase = priv->port_offset;
737 unsigned short ww;
738 unsigned char data;
739 u32 low, high;
740
741 vt6655_mac_reg_bits_on(iobase, MAC_REG_TFTCTL, TFTCTL_TSFCNTRRD);
742 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
743 data = ioread8(iobase + MAC_REG_TFTCTL);
744 if (!(data & TFTCTL_TSFCNTRRD))
745 break;
746 }
747 if (ww == W_MAX_TIMEOUT)
748 return 0;
749 low = ioread32(iobase + MAC_REG_TSFCNTR);
750 high = ioread32(iobase + MAC_REG_TSFCNTR + 4);
751 return le64_to_cpu(low + ((u64)high << 32));
752 }
753
754 /*
755 * Description: Read NIC TSF counter
756 * Get NEXTTBTT from adjusted TSF and Beacon Interval
757 *
758 * Parameters:
759 * In:
760 * qwTSF - Current TSF counter
761 * wbeaconInterval - Beacon Interval
762 * Out:
763 * qwCurrTSF - Current TSF counter
764 *
765 * Return Value: TSF value of next Beacon
766 */
CARDqGetNextTBTT(u64 qwTSF,unsigned short wBeaconInterval)767 u64 CARDqGetNextTBTT(u64 qwTSF, unsigned short wBeaconInterval)
768 {
769 u32 beacon_int;
770
771 beacon_int = wBeaconInterval * 1024;
772 if (beacon_int) {
773 do_div(qwTSF, beacon_int);
774 qwTSF += 1;
775 qwTSF *= beacon_int;
776 }
777
778 return qwTSF;
779 }
780
781 /*
782 * Description: Set NIC TSF counter for first Beacon time
783 * Get NEXTTBTT from adjusted TSF and Beacon Interval
784 *
785 * Parameters:
786 * In:
787 * iobase - IO Base
788 * wBeaconInterval - Beacon Interval
789 * Out:
790 * none
791 *
792 * Return Value: none
793 */
CARDvSetFirstNextTBTT(struct vnt_private * priv,unsigned short wBeaconInterval)794 void CARDvSetFirstNextTBTT(struct vnt_private *priv,
795 unsigned short wBeaconInterval)
796 {
797 void __iomem *iobase = priv->port_offset;
798 u64 qwNextTBTT;
799
800 qwNextTBTT = vt6655_get_current_tsf(priv); /* Get Local TSF counter */
801
802 qwNextTBTT = CARDqGetNextTBTT(qwNextTBTT, wBeaconInterval);
803 /* Set NextTBTT */
804 qwNextTBTT = le64_to_cpu(qwNextTBTT);
805 iowrite32((u32)qwNextTBTT, iobase + MAC_REG_NEXTTBTT);
806 iowrite32((u32)(qwNextTBTT >> 32), iobase + MAC_REG_NEXTTBTT + 4);
807 vt6655_mac_reg_bits_on(iobase, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
808 }
809
810 /*
811 * Description: Sync NIC TSF counter for Beacon time
812 * Get NEXTTBTT and write to HW
813 *
814 * Parameters:
815 * In:
816 * priv - The adapter to be set
817 * qwTSF - Current TSF counter
818 * wBeaconInterval - Beacon Interval
819 * Out:
820 * none
821 *
822 * Return Value: none
823 */
CARDvUpdateNextTBTT(struct vnt_private * priv,u64 qwTSF,unsigned short wBeaconInterval)824 void CARDvUpdateNextTBTT(struct vnt_private *priv, u64 qwTSF,
825 unsigned short wBeaconInterval)
826 {
827 void __iomem *iobase = priv->port_offset;
828
829 qwTSF = CARDqGetNextTBTT(qwTSF, wBeaconInterval);
830 /* Set NextTBTT */
831 qwTSF = le64_to_cpu(qwTSF);
832 iowrite32((u32)qwTSF, iobase + MAC_REG_NEXTTBTT);
833 iowrite32((u32)(qwTSF >> 32), iobase + MAC_REG_NEXTTBTT + 4);
834 vt6655_mac_reg_bits_on(iobase, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
835 pr_debug("Card:Update Next TBTT[%8llx]\n", qwTSF);
836 }
837