1/*
2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
3 * Copyright (c) 2002-2004 Atheros Communications, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 * $FreeBSD: head/sys/dev/ath/ath_hal/ar5210/ar5210_reset.c 264899 2014-04-24 23:11:18Z adrian $
18 */
19#include "opt_ah.h"
20
21#include "ah.h"
22#include "ah_internal.h"
23
24#include "ar5210/ar5210.h"
25#include "ar5210/ar5210reg.h"
26#include "ar5210/ar5210phy.h"
27
28#include "ah_eeprom_v1.h"
29
30typedef struct {
31 uint32_t Offset;
32 uint32_t Value;
33} REGISTER_VAL;
34
35static const REGISTER_VAL ar5k0007_init[] = {
36#include "ar5210/ar5k_0007.ini"
37};
38
39/* Default Power Settings for channels outside of EEPROM range */
40static const uint8_t ar5k0007_pwrSettings[17] = {
41/* gain delta pc dac */
42/* 54 48 36 24 18 12 9 54 48 36 24 18 12 9 6 ob db */
43 9, 9, 0, 0, 0, 0, 0, 2, 2, 6, 6, 6, 6, 6, 6, 2, 2
44};
45
46/*
47 * The delay, in usecs, between writing AR_RC with a reset
48 * request and waiting for the chip to settle. If this is
49 * too short then the chip does not come out of sleep state.
50 * Note this value was empirically derived and may be dependent
51 * on the host machine (don't know--the problem was identified
52 * on an IBM 570e laptop; 10us delays worked on other systems).
53 */
54#define AR_RC_SETTLE_TIME 20000
55
56static HAL_BOOL ar5210SetResetReg(struct ath_hal *,
57 uint32_t resetMask, u_int delay);
58static HAL_BOOL ar5210SetChannel(struct ath_hal *, struct ieee80211_channel *);
59static void ar5210SetOperatingMode(struct ath_hal *, int opmode);
60
61/*
62 * Places the device in and out of reset and then places sane
63 * values in the registers based on EEPROM config, initialization
64 * vectors (as determined by the mode), and station configuration
65 *
66 * bChannelChange is used to preserve DMA/PCU registers across
67 * a HW Reset during channel change.
68 */
69HAL_BOOL
70ar5210Reset(struct ath_hal *ah, HAL_OPMODE opmode,
71 struct ieee80211_channel *chan, HAL_BOOL bChannelChange,
72 HAL_STATUS *status)
73{
74#define N(a) (sizeof (a) /sizeof (a[0]))
75#define FAIL(_code) do { ecode = _code; goto bad; } while (0)
76 struct ath_hal_5210 *ahp = AH5210(ah);
77 const HAL_EEPROM_v1 *ee = AH_PRIVATE(ah)->ah_eeprom;
78 HAL_CHANNEL_INTERNAL *ichan;
79 HAL_STATUS ecode;
80 uint32_t ledstate;
81 int i, q;
82
83 HALDEBUG(ah, HAL_DEBUG_RESET,
84 "%s: opmode %u channel %u/0x%x %s channel\n", __func__,
85 opmode, chan->ic_freq, chan->ic_flags,
86 bChannelChange ? "change" : "same");
87
88 if (!IEEE80211_IS_CHAN_5GHZ(chan)) {
89 /* Only 11a mode */
90 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: channel not 5GHz\n", __func__);
91 FAIL(HAL_EINVAL);
92 }
93 /*
94 * Map public channel to private.
95 */
96 ichan = ath_hal_checkchannel(ah, chan);
97 if (ichan == AH_NULL) {
98 HALDEBUG(ah, HAL_DEBUG_ANY,
99 "%s: invalid channel %u/0x%x; no mapping\n",
100 __func__, chan->ic_freq, chan->ic_flags);
101 FAIL(HAL_EINVAL);
102 }
103 switch (opmode) {
104 case HAL_M_STA:
105 case HAL_M_IBSS:
106 case HAL_M_HOSTAP:
107 case HAL_M_MONITOR:
108 break;
109 default:
110 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid operating mode %u\n",
111 __func__, opmode);
112 FAIL(HAL_EINVAL);
113 break;
114 }
115
116 ledstate = OS_REG_READ(ah, AR_PCICFG) &
117 (AR_PCICFG_LED_PEND | AR_PCICFG_LED_ACT);
118
119 if (!ar5210ChipReset(ah, chan)) {
120 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: chip reset failed\n",
121 __func__);
122 FAIL(HAL_EIO);
123 }
124
125 OS_REG_WRITE(ah, AR_STA_ID0, LE_READ_4(ahp->ah_macaddr));
126 OS_REG_WRITE(ah, AR_STA_ID1, LE_READ_2(ahp->ah_macaddr + 4));
127 ar5210SetOperatingMode(ah, opmode);
128
129 switch (opmode) {
130 case HAL_M_HOSTAP:
131 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG);
132 OS_REG_WRITE(ah, AR_PCICFG,
133 AR_PCICFG_LED_ACT | AR_PCICFG_LED_BCTL);
134 break;
135 case HAL_M_IBSS:
136 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG | AR_BCR_BCMD);
137 OS_REG_WRITE(ah, AR_PCICFG,
138 AR_PCICFG_CLKRUNEN | AR_PCICFG_LED_PEND | AR_PCICFG_LED_BCTL);
139 break;
140 case HAL_M_STA:
141 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG);
142 OS_REG_WRITE(ah, AR_PCICFG,
143 AR_PCICFG_CLKRUNEN | AR_PCICFG_LED_PEND | AR_PCICFG_LED_BCTL);
144 break;
145 case HAL_M_MONITOR:
146 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG);
147 OS_REG_WRITE(ah, AR_PCICFG,
148 AR_PCICFG_LED_ACT | AR_PCICFG_LED_BCTL);
149 break;
150 }
151
152 /* Restore previous led state */
153 OS_REG_WRITE(ah, AR_PCICFG, OS_REG_READ(ah, AR_PCICFG) | ledstate);
154
155#if 0
156 OS_REG_WRITE(ah, AR_BSS_ID0, LE_READ_4(ahp->ah_bssid));
157 OS_REG_WRITE(ah, AR_BSS_ID1, LE_READ_2(ahp->ah_bssid + 4));
158#endif
159 /* BSSID, association id, ps-poll */
160 ar5210WriteAssocid(ah, ahp->ah_bssid, ahp->ah_associd);
161
162 OS_REG_WRITE(ah, AR_TXDP0, 0);
163 OS_REG_WRITE(ah, AR_TXDP1, 0);
164 OS_REG_WRITE(ah, AR_RXDP, 0);
165
166 /*
167 * Initialize interrupt state.
168 */
169 (void) OS_REG_READ(ah, AR_ISR); /* cleared on read */
170 OS_REG_WRITE(ah, AR_IMR, 0);
171 OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
172 ahp->ah_maskReg = 0;
173
174 (void) OS_REG_READ(ah, AR_BSR); /* cleared on read */
175 OS_REG_WRITE(ah, AR_TXCFG, AR_DMASIZE_128B);
176 OS_REG_WRITE(ah, AR_RXCFG, AR_DMASIZE_128B);
177
178 OS_REG_WRITE(ah, AR_TOPS, 8); /* timeout prescale */
179 OS_REG_WRITE(ah, AR_RXNOFRM, 8); /* RX no frame timeout */
180 OS_REG_WRITE(ah, AR_RPGTO, 0); /* RX frame gap timeout */
181 OS_REG_WRITE(ah, AR_TXNOFRM, 0); /* TX no frame timeout */
182
183 OS_REG_WRITE(ah, AR_SFR, 0);
184 OS_REG_WRITE(ah, AR_MIBC, 0); /* unfreeze ctrs + clr state */
185 OS_REG_WRITE(ah, AR_RSSI_THR, ahp->ah_rssiThr);
186 OS_REG_WRITE(ah, AR_CFP_DUR, 0);
187
188 ar5210SetRxFilter(ah, 0); /* nothing for now */
189 OS_REG_WRITE(ah, AR_MCAST_FIL0, 0); /* multicast filter */
190 OS_REG_WRITE(ah, AR_MCAST_FIL1, 0); /* XXX was 2 */
191
192 OS_REG_WRITE(ah, AR_TX_MASK0, 0);
193 OS_REG_WRITE(ah, AR_TX_MASK1, 0);
194 OS_REG_WRITE(ah, AR_CLR_TMASK, 1);
195 OS_REG_WRITE(ah, AR_TRIG_LEV, 1); /* minimum */
196
197 ar5210UpdateDiagReg(ah, 0);
198
199 OS_REG_WRITE(ah, AR_CFP_PERIOD, 0);
200 OS_REG_WRITE(ah, AR_TIMER0, 0); /* next beacon time */
201 OS_REG_WRITE(ah, AR_TSF_L32, 0); /* local clock */
202 OS_REG_WRITE(ah, AR_TIMER1, ~0); /* next DMA beacon alert */
203 OS_REG_WRITE(ah, AR_TIMER2, ~0); /* next SW beacon alert */
204 OS_REG_WRITE(ah, AR_TIMER3, 1); /* next ATIM window */
205
206 /* Write the INI values for PHYreg initialization */
207 for (i = 0; i < N(ar5k0007_init); i++) {
208 uint32_t reg = ar5k0007_init[i].Offset;
209 /* On channel change, don't reset the PCU registers */
210 if (!(bChannelChange && (0x8000 <= reg && reg < 0x9000)))
211 OS_REG_WRITE(ah, reg, ar5k0007_init[i].Value);
212 }
213
214 /* Setup the transmit power values for cards since 0x0[0-2]05 */
215 if (!ar5210SetTransmitPower(ah, chan)) {
216 HALDEBUG(ah, HAL_DEBUG_ANY,
217 "%s: error init'ing transmit power\n", __func__);
218 FAIL(HAL_EIO);
219 }
220
221 OS_REG_WRITE(ah, AR_PHY(10),
222 (OS_REG_READ(ah, AR_PHY(10)) & 0xFFFF00FF) |
223 (ee->ee_xlnaOn << 8));
224 OS_REG_WRITE(ah, AR_PHY(13),
225 (ee->ee_xpaOff << 24) | (ee->ee_xpaOff << 16) |
226 (ee->ee_xpaOn << 8) | ee->ee_xpaOn);
227 OS_REG_WRITE(ah, AR_PHY(17),
228 (OS_REG_READ(ah, AR_PHY(17)) & 0xFFFFC07F) |
229 ((ee->ee_antenna >> 1) & 0x3F80));
230 OS_REG_WRITE(ah, AR_PHY(18),
231 (OS_REG_READ(ah, AR_PHY(18)) & 0xFFFC0FFF) |
232 ((ee->ee_antenna << 10) & 0x3F000));
233 OS_REG_WRITE(ah, AR_PHY(25),
234 (OS_REG_READ(ah, AR_PHY(25)) & 0xFFF80FFF) |
235 ((ee->ee_thresh62 << 12) & 0x7F000));
236 OS_REG_WRITE(ah, AR_PHY(68),
237 (OS_REG_READ(ah, AR_PHY(68)) & 0xFFFFFFFC) |
238 (ee->ee_antenna & 0x3));
239
240 if (!ar5210SetChannel(ah, chan)) {
241 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unable to set channel\n",
242 __func__);
243 FAIL(HAL_EIO);
244 }
245 if (bChannelChange && !IEEE80211_IS_CHAN_DFS(chan))
246 chan->ic_state &= ~IEEE80211_CHANSTATE_CWINT;
247
248 /* Activate the PHY */
249 OS_REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ENABLE);
250
251 OS_DELAY(1000); /* Wait a bit (1 msec) */
252
253 /* calibrate the HW and poll the bit going to 0 for completion */
254 OS_REG_WRITE(ah, AR_PHY_AGCCTL,
255 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_CAL);
256 (void) ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_CAL, 0);
257
258 /* Perform noise floor calibration and set status */
259 if (!ar5210CalNoiseFloor(ah, ichan)) {
260 chan->ic_state |= IEEE80211_CHANSTATE_CWINT;
261 HALDEBUG(ah, HAL_DEBUG_ANY,
262 "%s: noise floor calibration failed\n", __func__);
263 FAIL(HAL_EIO);
264 }
265
266 for (q = 0; q < HAL_NUM_TX_QUEUES; q++)
267 ar5210ResetTxQueue(ah, q);
268
269 if (AH_PRIVATE(ah)->ah_rfkillEnabled)
270 ar5210EnableRfKill(ah);
271
272 /*
273 * Writing to AR_BEACON will start timers. Hence it should be
274 * the last register to be written. Do not reset tsf, do not
275 * enable beacons at this point, but preserve other values
276 * like beaconInterval.
277 */
278 OS_REG_WRITE(ah, AR_BEACON,
279 (OS_REG_READ(ah, AR_BEACON) &
280 ~(AR_BEACON_EN | AR_BEACON_RESET_TSF)));
281
282 /* Restore user-specified slot time and timeouts */
283 if (ahp->ah_sifstime != (u_int) -1)
284 ar5210SetSifsTime(ah, ahp->ah_sifstime);
285 if (ahp->ah_slottime != (u_int) -1)
286 ar5210SetSlotTime(ah, ahp->ah_slottime);
287 if (ahp->ah_acktimeout != (u_int) -1)
288 ar5210SetAckTimeout(ah, ahp->ah_acktimeout);
289 if (ahp->ah_ctstimeout != (u_int) -1)
290 ar5210SetCTSTimeout(ah, ahp->ah_ctstimeout);
291 if (AH_PRIVATE(ah)->ah_diagreg != 0)
292 ar5210UpdateDiagReg(ah, AH_PRIVATE(ah)->ah_diagreg);
293
294 AH_PRIVATE(ah)->ah_opmode = opmode; /* record operating mode */
295
296 HALDEBUG(ah, HAL_DEBUG_RESET, "%s: done\n", __func__);
297
298 return AH_TRUE;
299bad:
300 if (status != AH_NULL)
301 *status = ecode;
302 return AH_FALSE;
303#undef FAIL
304#undef N
305}
306
307static void
308ar5210SetOperatingMode(struct ath_hal *ah, int opmode)
309{
310 struct ath_hal_5210 *ahp = AH5210(ah);
311 uint32_t val;
312
313 val = OS_REG_READ(ah, AR_STA_ID1) & 0xffff;
314 switch (opmode) {
315 case HAL_M_HOSTAP:
316 OS_REG_WRITE(ah, AR_STA_ID1, val
317 | AR_STA_ID1_AP
318 | AR_STA_ID1_NO_PSPOLL
319 | AR_STA_ID1_DESC_ANTENNA
320 | ahp->ah_staId1Defaults);
321 break;
322 case HAL_M_IBSS:
323 OS_REG_WRITE(ah, AR_STA_ID1, val
324 | AR_STA_ID1_ADHOC
325 | AR_STA_ID1_NO_PSPOLL
326 | AR_STA_ID1_DESC_ANTENNA
327 | ahp->ah_staId1Defaults);
328 break;
329 case HAL_M_STA:
330 OS_REG_WRITE(ah, AR_STA_ID1, val
331 | AR_STA_ID1_NO_PSPOLL
332 | AR_STA_ID1_PWR_SV
333 | ahp->ah_staId1Defaults);
334 break;
335 case HAL_M_MONITOR:
336 OS_REG_WRITE(ah, AR_STA_ID1, val
337 | AR_STA_ID1_NO_PSPOLL
338 | ahp->ah_staId1Defaults);
339 break;
340 }
341}
342
343void
344ar5210SetPCUConfig(struct ath_hal *ah)
345{
346 ar5210SetOperatingMode(ah, AH_PRIVATE(ah)->ah_opmode);
347}
348
349/*
350 * Places the PHY and Radio chips into reset. A full reset
351 * must be called to leave this state. The PCI/MAC/PCU are
352 * not placed into reset as we must receive interrupt to
353 * re-enable the hardware.
354 */
355HAL_BOOL
356ar5210PhyDisable(struct ath_hal *ah)
357{
358 return ar5210SetResetReg(ah, AR_RC_RPHY, 10);
359}
360
361/*
362 * Places all of hardware into reset
363 */
364HAL_BOOL
365ar5210Disable(struct ath_hal *ah)
366{
367#define AR_RC_HW (AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC)
368 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE))
369 return AH_FALSE;
370
371 /*
372 * Reset the HW - PCI must be reset after the rest of the
373 * device has been reset
374 */
375 if (!ar5210SetResetReg(ah, AR_RC_HW, AR_RC_SETTLE_TIME))
376 return AH_FALSE;
377 OS_DELAY(1000);
378 (void) ar5210SetResetReg(ah, AR_RC_HW | AR_RC_RPCI, AR_RC_SETTLE_TIME);
379 OS_DELAY(2100); /* 8245 @ 96Mhz hangs with 2000us. */
380
381 return AH_TRUE;
382#undef AR_RC_HW
383}
384
385/*
386 * Places the hardware into reset and then pulls it out of reset
387 */
388HAL_BOOL
389ar5210ChipReset(struct ath_hal *ah, struct ieee80211_channel *chan)
390{
391#define AR_RC_HW (AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC)
392
393 HALDEBUG(ah, HAL_DEBUG_RESET, "%s turbo %s\n", __func__,
394 chan && IEEE80211_IS_CHAN_TURBO(chan) ?
395 "enabled" : "disabled");
396
397 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE))
398 return AH_FALSE;
399
400 /* Place chip in turbo before reset to cleanly reset clocks */
401 OS_REG_WRITE(ah, AR_PHY_FRCTL,
402 chan && IEEE80211_IS_CHAN_TURBO(chan) ? AR_PHY_TURBO_MODE : 0);
403
404 /*
405 * Reset the HW.
406 * PCI must be reset after the rest of the device has been reset.
407 */
408 if (!ar5210SetResetReg(ah, AR_RC_HW, AR_RC_SETTLE_TIME))
409 return AH_FALSE;
410 OS_DELAY(1000);
411 if (!ar5210SetResetReg(ah, AR_RC_HW | AR_RC_RPCI, AR_RC_SETTLE_TIME))
412 return AH_FALSE;
413 OS_DELAY(2100); /* 8245 @ 96Mhz hangs with 2000us. */
414
415 /*
416 * Bring out of sleep mode (AGAIN)
417 *
418 * WARNING WARNING WARNING
419 *
420 * There is a problem with the chip where it doesn't always indicate
421 * that it's awake, so initializePowerUp() will fail.
422 */
423 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE))
424 return AH_FALSE;
425
426 /* Clear warm reset reg */
427 return ar5210SetResetReg(ah, 0, 10);
428#undef AR_RC_HW
429}
430
431enum {
432 FIRPWR_M = 0x03fc0000,
433 FIRPWR_S = 18,
434 KCOARSEHIGH_M = 0x003f8000,
435 KCOARSEHIGH_S = 15,
436 KCOARSELOW_M = 0x00007f80,
437 KCOARSELOW_S = 7,
438 ADCSAT_ICOUNT_M = 0x0001f800,
439 ADCSAT_ICOUNT_S = 11,
440 ADCSAT_THRESH_M = 0x000007e0,
441 ADCSAT_THRESH_S = 5
442};
443
444/*
445 * Recalibrate the lower PHY chips to account for temperature/environment
446 * changes.
447 */
448HAL_BOOL
449ar5210PerCalibrationN(struct ath_hal *ah,
450 struct ieee80211_channel *chan, u_int chainMask,
451 HAL_BOOL longCal, HAL_BOOL *isCalDone)
452{
453 uint32_t regBeacon;
454 uint32_t reg9858, reg985c, reg9868;
455 HAL_CHANNEL_INTERNAL *ichan;
456
457 ichan = ath_hal_checkchannel(ah, chan);
458 if (ichan == AH_NULL)
459 return AH_FALSE;
460 /* Disable tx and rx */
461 ar5210UpdateDiagReg(ah,
462 OS_REG_READ(ah, AR_DIAG_SW) | (AR_DIAG_SW_DIS_TX | AR_DIAG_SW_DIS_RX));
463
464 /* Disable Beacon Enable */
465 regBeacon = OS_REG_READ(ah, AR_BEACON);
466 OS_REG_WRITE(ah, AR_BEACON, regBeacon & ~AR_BEACON_EN);
467
468 /* Delay 4ms to ensure that all tx and rx activity has ceased */
469 OS_DELAY(4000);
470
471 /* Disable AGC to radio traffic */
472 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) | 0x08000000);
473 /* Wait for the AGC traffic to cease. */
474 OS_DELAY(10);
475
476 /* Change Channel to relock synth */
477 if (!ar5210SetChannel(ah, chan))
478 return AH_FALSE;
479
480 /* wait for the synthesizer lock to stabilize */
481 OS_DELAY(1000);
482
483 /* Re-enable AGC to radio traffic */
484 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) & (~0x08000000));
485
486 /*
487 * Configure the AGC so that it is highly unlikely (if not
488 * impossible) for it to send any gain changes to the analog
489 * chip. We store off the current values so that they can
490 * be rewritten below. Setting the following values:
491 * firpwr = -1
492 * Kcoursehigh = -1
493 * Kcourselow = -127
494 * ADCsat_icount = 2
495 * ADCsat_thresh = 12
496 */
497 reg9858 = OS_REG_READ(ah, 0x9858);
498 reg985c = OS_REG_READ(ah, 0x985c);
499 reg9868 = OS_REG_READ(ah, 0x9868);
500
501 OS_REG_WRITE(ah, 0x9858, (reg9858 & ~FIRPWR_M) |
502 ((-1 << FIRPWR_S) & FIRPWR_M));
503 OS_REG_WRITE(ah, 0x985c,
504 (reg985c & ~(KCOARSEHIGH_M | KCOARSELOW_M)) |
505 ((-1 << KCOARSEHIGH_S) & KCOARSEHIGH_M) |
506 ((-127 << KCOARSELOW_S) & KCOARSELOW_M));
507 OS_REG_WRITE(ah, 0x9868,
508 (reg9868 & ~(ADCSAT_ICOUNT_M | ADCSAT_THRESH_M)) |
509 ((2 << ADCSAT_ICOUNT_S) & ADCSAT_ICOUNT_M) |
510 ((12 << ADCSAT_THRESH_S) & ADCSAT_THRESH_M));
511
512 /* Wait for AGC changes to be enacted */
513 OS_DELAY(20);
514
515 /*
516 * We disable RF mix/gain stages for the PGA to avoid a
517 * race condition that will occur with receiving a frame
518 * and performing the AGC calibration. This will be
519 * re-enabled at the end of offset cal. We turn off AGC
520 * writes during this write as it will go over the analog bus.
521 */
522 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) | 0x08000000);
523 OS_DELAY(10); /* wait for the AGC traffic to cease */
524 OS_REG_WRITE(ah, 0x98D4, 0x21);
525 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) & (~0x08000000));
526
527 /* wait to make sure that additional AGC traffic has quiesced */
528 OS_DELAY(1000);
529
530 /* AGC calibration (this was added to make the NF threshold check work) */
531 OS_REG_WRITE(ah, AR_PHY_AGCCTL,
532 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_CAL);
533 if (!ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_CAL, 0)) {
534 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: AGC calibration timeout\n",
535 __func__);
536 }
537
538 /* Rewrite our AGC values we stored off earlier (return AGC to normal operation) */
539 OS_REG_WRITE(ah, 0x9858, reg9858);
540 OS_REG_WRITE(ah, 0x985c, reg985c);
541 OS_REG_WRITE(ah, 0x9868, reg9868);
542
543 /* Perform noise floor and set status */
544 if (!ar5210CalNoiseFloor(ah, ichan)) {
545 /*
546 * Delay 5ms before retrying the noise floor -
547 * just to make sure. We're in an error
548 * condition here
549 */
550 HALDEBUG(ah, HAL_DEBUG_NFCAL | HAL_DEBUG_PERCAL,
551 "%s: Performing 2nd Noise Cal\n", __func__);
552 OS_DELAY(5000);
553 if (!ar5210CalNoiseFloor(ah, ichan))
554 chan->ic_state |= IEEE80211_CHANSTATE_CWINT;
555 }
556
557 /* Clear tx and rx disable bit */
558 ar5210UpdateDiagReg(ah,
559 OS_REG_READ(ah, AR_DIAG_SW) & ~(AR_DIAG_SW_DIS_TX | AR_DIAG_SW_DIS_RX));
560
561 /* Re-enable Beacons */
562 OS_REG_WRITE(ah, AR_BEACON, regBeacon);
563
564 *isCalDone = AH_TRUE;
565
566 return AH_TRUE;
567}
568
569HAL_BOOL
570ar5210PerCalibration(struct ath_hal *ah, struct ieee80211_channel *chan,
571 HAL_BOOL *isIQdone)
572{
573 return ar5210PerCalibrationN(ah, chan, 0x1, AH_TRUE, isIQdone);
574}
575
576HAL_BOOL
577ar5210ResetCalValid(struct ath_hal *ah, const struct ieee80211_channel *chan)
578{
579 return AH_TRUE;
580}
581
582/*
583 * Writes the given reset bit mask into the reset register
584 */
585static HAL_BOOL
586ar5210SetResetReg(struct ath_hal *ah, uint32_t resetMask, u_int delay)
587{
588 uint32_t mask = resetMask ? resetMask : ~0;
589 HAL_BOOL rt;
590
591 OS_REG_WRITE(ah, AR_RC, resetMask);
592 /* need to wait at least 128 clocks when reseting PCI before read */
593 OS_DELAY(delay);
594
595 resetMask &= AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC;
596 mask &= AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC;
597 rt = ath_hal_wait(ah, AR_RC, mask, resetMask);
598 if ((resetMask & AR_RC_RMAC) == 0) {
599 if (isBigEndian()) {
600 /*
601 * Set CFG, little-endian for descriptor accesses.
602 */
603 mask = INIT_CONFIG_STATUS | AR_CFG_SWTD | AR_CFG_SWRD;
604 OS_REG_WRITE(ah, AR_CFG, mask);
605 } else
606 OS_REG_WRITE(ah, AR_CFG, INIT_CONFIG_STATUS);
607 }
608 return rt;
609}
610
611
612/*
613 * Returns: the pcdac value
614 */
615static uint8_t
616getPcdac(struct ath_hal *ah, const struct tpcMap *pRD, uint8_t dBm)
617{
618 int32_t i;
619 int useNextEntry = AH_FALSE;
620 uint32_t interp;
621
622 for (i = AR_TP_SCALING_ENTRIES - 1; i >= 0; i--) {
623 /* Check for exact entry */
624 if (dBm == AR_I2DBM(i)) {
625 if (pRD->pcdac[i] != 63)
626 return pRD->pcdac[i];
627 useNextEntry = AH_TRUE;
628 } else if (dBm + 1 == AR_I2DBM(i) && i > 0) {
629 /* Interpolate for between entry with a logish scale */
630 if (pRD->pcdac[i] != 63 && pRD->pcdac[i-1] != 63) {
631 interp = (350 * (pRD->pcdac[i] - pRD->pcdac[i-1])) + 999;
632 interp = (interp / 1000) + pRD->pcdac[i-1];
633 return interp;
634 }
635 useNextEntry = AH_TRUE;
636 } else if (useNextEntry == AH_TRUE) {
637 /* Grab the next lowest */
638 if (pRD->pcdac[i] != 63)
639 return pRD->pcdac[i];
640 }
641 }
642
643 /* Return the lowest Entry if we haven't returned */
644 for (i = 0; i < AR_TP_SCALING_ENTRIES; i++)
645 if (pRD->pcdac[i] != 63)
646 return pRD->pcdac[i];
647
648 /* No value to return from table */
649#ifdef AH_DEBUG
650 ath_hal_printf(ah, "%s: empty transmit power table?\n", __func__);
651#endif
652 return 1;
653}
654
655/*
656 * Find or interpolates the gainF value from the table ptr.
657 */
658static uint8_t
659getGainF(struct ath_hal *ah, const struct tpcMap *pRD,
660 uint8_t pcdac, uint8_t *dBm)
661{
662 uint32_t interp;
663 int low, high, i;
664
665 low = high = -1;
666
667 for (i = 0; i < AR_TP_SCALING_ENTRIES; i++) {
668 if(pRD->pcdac[i] == 63)
669 continue;
670 if (pcdac == pRD->pcdac[i]) {
671 *dBm = AR_I2DBM(i);
672 return pRD->gainF[i]; /* Exact Match */
673 }
674 if (pcdac > pRD->pcdac[i])
675 low = i;
676 if (pcdac < pRD->pcdac[i]) {
677 high = i;
678 if (low == -1) {
679 *dBm = AR_I2DBM(i);
680 /* PCDAC is lower than lowest setting */
681 return pRD->gainF[i];
682 }
683 break;
684 }
685 }
686 if (i >= AR_TP_SCALING_ENTRIES && low == -1) {
687 /* No settings were found */
688#ifdef AH_DEBUG
689 ath_hal_printf(ah,
690 "%s: no valid entries in the pcdac table: %d\n",
691 __func__, pcdac);
692#endif
693 return 63;
694 }
695 if (i >= AR_TP_SCALING_ENTRIES) {
696 /* PCDAC setting was above the max setting in the table */
697 *dBm = AR_I2DBM(low);
698 return pRD->gainF[low];
699 }
700 /* Only exact if table has no missing entries */
701 *dBm = (low + high) + 3;
702
703 /*
704 * Perform interpolation between low and high values to find gainF
705 * linearly scale the pcdac between low and high
706 */
707 interp = ((pcdac - pRD->pcdac[low]) * 1000) /
708 (pRD->pcdac[high] - pRD->pcdac[low]);
709 /*
710 * Multiply the scale ratio by the gainF difference
711 * (plus a rnd up factor)
712 */
713 interp = ((interp * (pRD->gainF[high] - pRD->gainF[low])) + 999) / 1000;
714
715 /* Add ratioed gain_f to low gain_f value */
716 return interp + pRD->gainF[low];
717}
718
719HAL_BOOL
720ar5210SetTxPowerLimit(struct ath_hal *ah, uint32_t limit)
721{
722 AH_PRIVATE(ah)->ah_powerLimit = AH_MIN(limit, AR5210_MAX_RATE_POWER);
723 /* XXX flush to h/w */
724 return AH_TRUE;
725}
726
727/*
728 * Get TXPower values and set them in the radio
729 */
730static HAL_BOOL
731setupPowerSettings(struct ath_hal *ah, const struct ieee80211_channel *chan,
732 uint8_t cp[17])
733{
734 uint16_t freq = ath_hal_gethwchannel(ah, chan);
735 const HAL_EEPROM_v1 *ee = AH_PRIVATE(ah)->ah_eeprom;
736 uint8_t gainFRD, gainF36, gainF48, gainF54;
737 uint8_t dBmRD, dBm36, dBm48, dBm54, dontcare;
738 uint32_t rd, group;
739 const struct tpcMap *pRD;
740
741 /* Set OB/DB Values regardless of channel */
742 cp[15] = (ee->ee_biasCurrents >> 4) & 0x7;
743 cp[16] = ee->ee_biasCurrents & 0x7;
744
745 if (freq < 5170 || freq > 5320) {
746 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel %u\n",
747 __func__, freq);
748 return AH_FALSE;
749 }
750
751 HALASSERT(ee->ee_version >= AR_EEPROM_VER1 &&
752 ee->ee_version < AR_EEPROM_VER3);
753
754 /* Match regulatory domain */
755 for (rd = 0; rd < AR_REG_DOMAINS_MAX; rd++)
756 if (AH_PRIVATE(ah)->ah_currentRD == ee->ee_regDomain[rd])
757 break;
758 if (rd == AR_REG_DOMAINS_MAX) {
759#ifdef AH_DEBUG
760 ath_hal_printf(ah,
761 "%s: no calibrated regulatory domain matches the "
762 "current regularly domain (0x%0x)\n", __func__,
763 AH_PRIVATE(ah)->ah_currentRD);
764#endif
765 return AH_FALSE;
766 }
767 group = ((freq - 5170) / 10);
768
769 if (group > 11) {
770 /* Pull 5.29 into the 5.27 group */
771 group--;
772 }
773
774 /* Integer divide will set group from 0 to 4 */
775 group = group / 3;
776 pRD = &ee->ee_tpc[group];
777
778 /* Set PC DAC Values */
779 cp[14] = pRD->regdmn[rd];
780 cp[9] = AH_MIN(pRD->regdmn[rd], pRD->rate36);
781 cp[8] = AH_MIN(pRD->regdmn[rd], pRD->rate48);
782 cp[7] = AH_MIN(pRD->regdmn[rd], pRD->rate54);
783
784 /* Find Corresponding gainF values for RD, 36, 48, 54 */
785 gainFRD = getGainF(ah, pRD, pRD->regdmn[rd], &dBmRD);
786 gainF36 = getGainF(ah, pRD, cp[9], &dBm36);
787 gainF48 = getGainF(ah, pRD, cp[8], &dBm48);
788 gainF54 = getGainF(ah, pRD, cp[7], &dBm54);
789
790 /* Power Scale if requested */
791 if (AH_PRIVATE(ah)->ah_tpScale != HAL_TP_SCALE_MAX) {
792 static const uint16_t tpcScaleReductionTable[5] =
793 { 0, 3, 6, 9, AR5210_MAX_RATE_POWER };
794 uint16_t tpScale;
795
796 tpScale = tpcScaleReductionTable[AH_PRIVATE(ah)->ah_tpScale];
797 if (dBmRD < tpScale+3)
798 dBmRD = 3; /* min */
799 else
800 dBmRD -= tpScale;
801 cp[14] = getPcdac(ah, pRD, dBmRD);
802 gainFRD = getGainF(ah, pRD, cp[14], &dontcare);
803 dBm36 = AH_MIN(dBm36, dBmRD);
804 cp[9] = getPcdac(ah, pRD, dBm36);
805 gainF36 = getGainF(ah, pRD, cp[9], &dontcare);
806 dBm48 = AH_MIN(dBm48, dBmRD);
807 cp[8] = getPcdac(ah, pRD, dBm48);
808 gainF48 = getGainF(ah, pRD, cp[8], &dontcare);
809 dBm54 = AH_MIN(dBm54, dBmRD);
810 cp[7] = getPcdac(ah, pRD, dBm54);
811 gainF54 = getGainF(ah, pRD, cp[7], &dontcare);
812 }
813 /* Record current dBm at rate 6 */
814 AH_PRIVATE(ah)->ah_maxPowerLevel = 2*dBmRD;
815
816 cp[13] = cp[12] = cp[11] = cp[10] = cp[14];
817
818 /* Set GainF Values */
819 cp[0] = gainFRD - gainF54;
820 cp[1] = gainFRD - gainF48;
821 cp[2] = gainFRD - gainF36;
822 /* 9, 12, 18, 24 have no gain_delta from 6 */
823 cp[3] = cp[4] = cp[5] = cp[6] = 0;
824 return AH_TRUE;
825}
826
827/*
828 * Places the device in and out of reset and then places sane
829 * values in the registers based on EEPROM config, initialization
830 * vectors (as determined by the mode), and station configuration
831 */
832HAL_BOOL
833ar5210SetTransmitPower(struct ath_hal *ah, const struct ieee80211_channel *chan)
834{
835#define N(a) (sizeof (a) / sizeof (a[0]))
836 static const uint32_t pwr_regs_start[17] = {
837 0x00000000, 0x00000000, 0x00000000,
838 0x00000000, 0x00000000, 0xf0000000,
839 0xcc000000, 0x00000000, 0x00000000,
840 0x00000000, 0x0a000000, 0x000000e2,
841 0x0a000020, 0x01000002, 0x01000018,
842 0x40000000, 0x00000418
843 };
844 uint16_t i;
845 uint8_t cp[sizeof(ar5k0007_pwrSettings)];
846 uint32_t pwr_regs[17];
847
848 OS_MEMCPY(pwr_regs, pwr_regs_start, sizeof(pwr_regs));
849 OS_MEMCPY(cp, ar5k0007_pwrSettings, sizeof(cp));
850
851 /* Check the EEPROM tx power calibration settings */
852 if (!setupPowerSettings(ah, chan, cp)) {
853#ifdef AH_DEBUG
854 ath_hal_printf(ah, "%s: unable to setup power settings\n",
855 __func__);
856#endif
857 return AH_FALSE;
858 }
859 if (cp[15] < 1 || cp[15] > 5) {
860#ifdef AH_DEBUG
861 ath_hal_printf(ah, "%s: OB out of range (%u)\n",
862 __func__, cp[15]);
863#endif
864 return AH_FALSE;
865 }
866 if (cp[16] < 1 || cp[16] > 5) {
867#ifdef AH_DEBUG
868 ath_hal_printf(ah, "%s: DB out of range (%u)\n",
869 __func__, cp[16]);
870#endif
871 return AH_FALSE;
872 }
873
874 /* reverse bits of the transmit power array */
875 for (i = 0; i < 7; i++)
876 cp[i] = ath_hal_reverseBits(cp[i], 5);
877 for (i = 7; i < 15; i++)
878 cp[i] = ath_hal_reverseBits(cp[i], 6);
879
880 /* merge transmit power values into the register - quite gross */
881 pwr_regs[0] |= ((cp[1] << 5) & 0xE0) | (cp[0] & 0x1F);
882 pwr_regs[1] |= ((cp[3] << 7) & 0x80) | ((cp[2] << 2) & 0x7C) |
883 ((cp[1] >> 3) & 0x03);
884 pwr_regs[2] |= ((cp[4] << 4) & 0xF0) | ((cp[3] >> 1) & 0x0F);
885 pwr_regs[3] |= ((cp[6] << 6) & 0xC0) | ((cp[5] << 1) & 0x3E) |
886 ((cp[4] >> 4) & 0x01);
887 pwr_regs[4] |= ((cp[7] << 3) & 0xF8) | ((cp[6] >> 2) & 0x07);
888 pwr_regs[5] |= ((cp[9] << 7) & 0x80) | ((cp[8] << 1) & 0x7E) |
889 ((cp[7] >> 5) & 0x01);
890 pwr_regs[6] |= ((cp[10] << 5) & 0xE0) | ((cp[9] >> 1) & 0x1F);
891 pwr_regs[7] |= ((cp[11] << 3) & 0xF8) | ((cp[10] >> 3) & 0x07);
892 pwr_regs[8] |= ((cp[12] << 1) & 0x7E) | ((cp[11] >> 5) & 0x01);
893 pwr_regs[9] |= ((cp[13] << 5) & 0xE0);
894 pwr_regs[10] |= ((cp[14] << 3) & 0xF8) | ((cp[13] >> 3) & 0x07);
895 pwr_regs[11] |= ((cp[14] >> 5) & 0x01);
896
897 /* Set OB */
898 pwr_regs[8] |= (ath_hal_reverseBits(cp[15], 3) << 7) & 0x80;
899 pwr_regs[9] |= (ath_hal_reverseBits(cp[15], 3) >> 1) & 0x03;
900
901 /* Set DB */
902 pwr_regs[9] |= (ath_hal_reverseBits(cp[16], 3) << 2) & 0x1C;
903
904 /* Write the registers */
905 for (i = 0; i < N(pwr_regs)-1; i++)
906 OS_REG_WRITE(ah, 0x0000989c, pwr_regs[i]);
907 /* last write is a flush */
908 OS_REG_WRITE(ah, 0x000098d4, pwr_regs[i]);
909
910 return AH_TRUE;
911#undef N
912}
913
914/*
915 * Takes the MHz channel value and sets the Channel value
916 *
917 * ASSUMES: Writes enabled to analog bus before AGC is active
918 * or by disabling the AGC.
919 */
920static HAL_BOOL
921ar5210SetChannel(struct ath_hal *ah, struct ieee80211_channel *chan)
922{
923 uint16_t freq = ath_hal_gethwchannel(ah, chan);
924 uint32_t data;
925
926 /* Set the Channel */
927 data = ath_hal_reverseBits((freq - 5120)/10, 5);
928 data = (data << 1) | 0x41;
929 OS_REG_WRITE(ah, AR_PHY(0x27), data);
930 OS_REG_WRITE(ah, AR_PHY(0x30), 0);
931 AH_PRIVATE(ah)->ah_curchan = chan;
932 return AH_TRUE;
933}
934
935int16_t
936ar5210GetNoiseFloor(struct ath_hal *ah)
937{
938 int16_t nf;
939
940 nf = (OS_REG_READ(ah, AR_PHY(25)) >> 19) & 0x1ff;
941 if (nf & 0x100)
942 nf = 0 - ((nf ^ 0x1ff) + 1);
943 return nf;
944}
945
946#define NORMAL_NF_THRESH (-72)
947/*
948 * Peform the noisefloor calibration and check for
949 * any constant channel interference
950 *
951 * Returns: TRUE for a successful noise floor calibration; else FALSE
952 */
953HAL_BOOL
954ar5210CalNoiseFloor(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *ichan)
955{
956 int32_t nf, nfLoops;
957
958 /* Calibrate the noise floor */
959 OS_REG_WRITE(ah, AR_PHY_AGCCTL,
960 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_NF);
961
962 /* Do not read noise floor until it has done the first update */
963 if (!ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_NF, 0)) {
964#ifdef ATH_HAL_DEBUG
965 ath_hal_printf(ah, " -PHY NF Reg state: 0x%x\n",
966 OS_REG_READ(ah, AR_PHY_AGCCTL));
967 ath_hal_printf(ah, " -MAC Reset Reg state: 0x%x\n",
968 OS_REG_READ(ah, AR_RC));
969 ath_hal_printf(ah, " -PHY Active Reg state: 0x%x\n",
970 OS_REG_READ(ah, AR_PHY_ACTIVE));
971#endif /* ATH_HAL_DEBUG */
972 return AH_FALSE;
973 }
974
975 nf = 0;
976 /* Keep checking until the floor is below the threshold or the nf is done */
977 for (nfLoops = 0; ((nfLoops < 21) && (nf > NORMAL_NF_THRESH)); nfLoops++) {
978 OS_DELAY(1000); /* Sleep for 1 ms */
979 nf = ar5210GetNoiseFloor(ah);
980 }
981
982 if (nf > NORMAL_NF_THRESH) {
983 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: Bad noise cal %d\n",
984 __func__, nf);
985 ichan->rawNoiseFloor = 0;
986 return AH_FALSE;
987 }
988 ichan->rawNoiseFloor = nf;
989 return AH_TRUE;
990}
991
992/*
993 * Adjust NF based on statistical values for 5GHz frequencies.
994 */
995int16_t
996ar5210GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c)
997{
998 return 0;
999}
1000
1001HAL_RFGAIN
1002ar5210GetRfgain(struct ath_hal *ah)
1003{
1004 return HAL_RFGAIN_INACTIVE;
1005}
2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
3 * Copyright (c) 2002-2004 Atheros Communications, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 *
17 * $FreeBSD: head/sys/dev/ath/ath_hal/ar5210/ar5210_reset.c 264899 2014-04-24 23:11:18Z adrian $
18 */
19#include "opt_ah.h"
20
21#include "ah.h"
22#include "ah_internal.h"
23
24#include "ar5210/ar5210.h"
25#include "ar5210/ar5210reg.h"
26#include "ar5210/ar5210phy.h"
27
28#include "ah_eeprom_v1.h"
29
30typedef struct {
31 uint32_t Offset;
32 uint32_t Value;
33} REGISTER_VAL;
34
35static const REGISTER_VAL ar5k0007_init[] = {
36#include "ar5210/ar5k_0007.ini"
37};
38
39/* Default Power Settings for channels outside of EEPROM range */
40static const uint8_t ar5k0007_pwrSettings[17] = {
41/* gain delta pc dac */
42/* 54 48 36 24 18 12 9 54 48 36 24 18 12 9 6 ob db */
43 9, 9, 0, 0, 0, 0, 0, 2, 2, 6, 6, 6, 6, 6, 6, 2, 2
44};
45
46/*
47 * The delay, in usecs, between writing AR_RC with a reset
48 * request and waiting for the chip to settle. If this is
49 * too short then the chip does not come out of sleep state.
50 * Note this value was empirically derived and may be dependent
51 * on the host machine (don't know--the problem was identified
52 * on an IBM 570e laptop; 10us delays worked on other systems).
53 */
54#define AR_RC_SETTLE_TIME 20000
55
56static HAL_BOOL ar5210SetResetReg(struct ath_hal *,
57 uint32_t resetMask, u_int delay);
58static HAL_BOOL ar5210SetChannel(struct ath_hal *, struct ieee80211_channel *);
59static void ar5210SetOperatingMode(struct ath_hal *, int opmode);
60
61/*
62 * Places the device in and out of reset and then places sane
63 * values in the registers based on EEPROM config, initialization
64 * vectors (as determined by the mode), and station configuration
65 *
66 * bChannelChange is used to preserve DMA/PCU registers across
67 * a HW Reset during channel change.
68 */
69HAL_BOOL
70ar5210Reset(struct ath_hal *ah, HAL_OPMODE opmode,
71 struct ieee80211_channel *chan, HAL_BOOL bChannelChange,
72 HAL_STATUS *status)
73{
74#define N(a) (sizeof (a) /sizeof (a[0]))
75#define FAIL(_code) do { ecode = _code; goto bad; } while (0)
76 struct ath_hal_5210 *ahp = AH5210(ah);
77 const HAL_EEPROM_v1 *ee = AH_PRIVATE(ah)->ah_eeprom;
78 HAL_CHANNEL_INTERNAL *ichan;
79 HAL_STATUS ecode;
80 uint32_t ledstate;
81 int i, q;
82
83 HALDEBUG(ah, HAL_DEBUG_RESET,
84 "%s: opmode %u channel %u/0x%x %s channel\n", __func__,
85 opmode, chan->ic_freq, chan->ic_flags,
86 bChannelChange ? "change" : "same");
87
88 if (!IEEE80211_IS_CHAN_5GHZ(chan)) {
89 /* Only 11a mode */
90 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: channel not 5GHz\n", __func__);
91 FAIL(HAL_EINVAL);
92 }
93 /*
94 * Map public channel to private.
95 */
96 ichan = ath_hal_checkchannel(ah, chan);
97 if (ichan == AH_NULL) {
98 HALDEBUG(ah, HAL_DEBUG_ANY,
99 "%s: invalid channel %u/0x%x; no mapping\n",
100 __func__, chan->ic_freq, chan->ic_flags);
101 FAIL(HAL_EINVAL);
102 }
103 switch (opmode) {
104 case HAL_M_STA:
105 case HAL_M_IBSS:
106 case HAL_M_HOSTAP:
107 case HAL_M_MONITOR:
108 break;
109 default:
110 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid operating mode %u\n",
111 __func__, opmode);
112 FAIL(HAL_EINVAL);
113 break;
114 }
115
116 ledstate = OS_REG_READ(ah, AR_PCICFG) &
117 (AR_PCICFG_LED_PEND | AR_PCICFG_LED_ACT);
118
119 if (!ar5210ChipReset(ah, chan)) {
120 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: chip reset failed\n",
121 __func__);
122 FAIL(HAL_EIO);
123 }
124
125 OS_REG_WRITE(ah, AR_STA_ID0, LE_READ_4(ahp->ah_macaddr));
126 OS_REG_WRITE(ah, AR_STA_ID1, LE_READ_2(ahp->ah_macaddr + 4));
127 ar5210SetOperatingMode(ah, opmode);
128
129 switch (opmode) {
130 case HAL_M_HOSTAP:
131 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG);
132 OS_REG_WRITE(ah, AR_PCICFG,
133 AR_PCICFG_LED_ACT | AR_PCICFG_LED_BCTL);
134 break;
135 case HAL_M_IBSS:
136 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG | AR_BCR_BCMD);
137 OS_REG_WRITE(ah, AR_PCICFG,
138 AR_PCICFG_CLKRUNEN | AR_PCICFG_LED_PEND | AR_PCICFG_LED_BCTL);
139 break;
140 case HAL_M_STA:
141 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG);
142 OS_REG_WRITE(ah, AR_PCICFG,
143 AR_PCICFG_CLKRUNEN | AR_PCICFG_LED_PEND | AR_PCICFG_LED_BCTL);
144 break;
145 case HAL_M_MONITOR:
146 OS_REG_WRITE(ah, AR_BCR, INIT_BCON_CNTRL_REG);
147 OS_REG_WRITE(ah, AR_PCICFG,
148 AR_PCICFG_LED_ACT | AR_PCICFG_LED_BCTL);
149 break;
150 }
151
152 /* Restore previous led state */
153 OS_REG_WRITE(ah, AR_PCICFG, OS_REG_READ(ah, AR_PCICFG) | ledstate);
154
155#if 0
156 OS_REG_WRITE(ah, AR_BSS_ID0, LE_READ_4(ahp->ah_bssid));
157 OS_REG_WRITE(ah, AR_BSS_ID1, LE_READ_2(ahp->ah_bssid + 4));
158#endif
159 /* BSSID, association id, ps-poll */
160 ar5210WriteAssocid(ah, ahp->ah_bssid, ahp->ah_associd);
161
162 OS_REG_WRITE(ah, AR_TXDP0, 0);
163 OS_REG_WRITE(ah, AR_TXDP1, 0);
164 OS_REG_WRITE(ah, AR_RXDP, 0);
165
166 /*
167 * Initialize interrupt state.
168 */
169 (void) OS_REG_READ(ah, AR_ISR); /* cleared on read */
170 OS_REG_WRITE(ah, AR_IMR, 0);
171 OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
172 ahp->ah_maskReg = 0;
173
174 (void) OS_REG_READ(ah, AR_BSR); /* cleared on read */
175 OS_REG_WRITE(ah, AR_TXCFG, AR_DMASIZE_128B);
176 OS_REG_WRITE(ah, AR_RXCFG, AR_DMASIZE_128B);
177
178 OS_REG_WRITE(ah, AR_TOPS, 8); /* timeout prescale */
179 OS_REG_WRITE(ah, AR_RXNOFRM, 8); /* RX no frame timeout */
180 OS_REG_WRITE(ah, AR_RPGTO, 0); /* RX frame gap timeout */
181 OS_REG_WRITE(ah, AR_TXNOFRM, 0); /* TX no frame timeout */
182
183 OS_REG_WRITE(ah, AR_SFR, 0);
184 OS_REG_WRITE(ah, AR_MIBC, 0); /* unfreeze ctrs + clr state */
185 OS_REG_WRITE(ah, AR_RSSI_THR, ahp->ah_rssiThr);
186 OS_REG_WRITE(ah, AR_CFP_DUR, 0);
187
188 ar5210SetRxFilter(ah, 0); /* nothing for now */
189 OS_REG_WRITE(ah, AR_MCAST_FIL0, 0); /* multicast filter */
190 OS_REG_WRITE(ah, AR_MCAST_FIL1, 0); /* XXX was 2 */
191
192 OS_REG_WRITE(ah, AR_TX_MASK0, 0);
193 OS_REG_WRITE(ah, AR_TX_MASK1, 0);
194 OS_REG_WRITE(ah, AR_CLR_TMASK, 1);
195 OS_REG_WRITE(ah, AR_TRIG_LEV, 1); /* minimum */
196
197 ar5210UpdateDiagReg(ah, 0);
198
199 OS_REG_WRITE(ah, AR_CFP_PERIOD, 0);
200 OS_REG_WRITE(ah, AR_TIMER0, 0); /* next beacon time */
201 OS_REG_WRITE(ah, AR_TSF_L32, 0); /* local clock */
202 OS_REG_WRITE(ah, AR_TIMER1, ~0); /* next DMA beacon alert */
203 OS_REG_WRITE(ah, AR_TIMER2, ~0); /* next SW beacon alert */
204 OS_REG_WRITE(ah, AR_TIMER3, 1); /* next ATIM window */
205
206 /* Write the INI values for PHYreg initialization */
207 for (i = 0; i < N(ar5k0007_init); i++) {
208 uint32_t reg = ar5k0007_init[i].Offset;
209 /* On channel change, don't reset the PCU registers */
210 if (!(bChannelChange && (0x8000 <= reg && reg < 0x9000)))
211 OS_REG_WRITE(ah, reg, ar5k0007_init[i].Value);
212 }
213
214 /* Setup the transmit power values for cards since 0x0[0-2]05 */
215 if (!ar5210SetTransmitPower(ah, chan)) {
216 HALDEBUG(ah, HAL_DEBUG_ANY,
217 "%s: error init'ing transmit power\n", __func__);
218 FAIL(HAL_EIO);
219 }
220
221 OS_REG_WRITE(ah, AR_PHY(10),
222 (OS_REG_READ(ah, AR_PHY(10)) & 0xFFFF00FF) |
223 (ee->ee_xlnaOn << 8));
224 OS_REG_WRITE(ah, AR_PHY(13),
225 (ee->ee_xpaOff << 24) | (ee->ee_xpaOff << 16) |
226 (ee->ee_xpaOn << 8) | ee->ee_xpaOn);
227 OS_REG_WRITE(ah, AR_PHY(17),
228 (OS_REG_READ(ah, AR_PHY(17)) & 0xFFFFC07F) |
229 ((ee->ee_antenna >> 1) & 0x3F80));
230 OS_REG_WRITE(ah, AR_PHY(18),
231 (OS_REG_READ(ah, AR_PHY(18)) & 0xFFFC0FFF) |
232 ((ee->ee_antenna << 10) & 0x3F000));
233 OS_REG_WRITE(ah, AR_PHY(25),
234 (OS_REG_READ(ah, AR_PHY(25)) & 0xFFF80FFF) |
235 ((ee->ee_thresh62 << 12) & 0x7F000));
236 OS_REG_WRITE(ah, AR_PHY(68),
237 (OS_REG_READ(ah, AR_PHY(68)) & 0xFFFFFFFC) |
238 (ee->ee_antenna & 0x3));
239
240 if (!ar5210SetChannel(ah, chan)) {
241 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: unable to set channel\n",
242 __func__);
243 FAIL(HAL_EIO);
244 }
245 if (bChannelChange && !IEEE80211_IS_CHAN_DFS(chan))
246 chan->ic_state &= ~IEEE80211_CHANSTATE_CWINT;
247
248 /* Activate the PHY */
249 OS_REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ENABLE);
250
251 OS_DELAY(1000); /* Wait a bit (1 msec) */
252
253 /* calibrate the HW and poll the bit going to 0 for completion */
254 OS_REG_WRITE(ah, AR_PHY_AGCCTL,
255 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_CAL);
256 (void) ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_CAL, 0);
257
258 /* Perform noise floor calibration and set status */
259 if (!ar5210CalNoiseFloor(ah, ichan)) {
260 chan->ic_state |= IEEE80211_CHANSTATE_CWINT;
261 HALDEBUG(ah, HAL_DEBUG_ANY,
262 "%s: noise floor calibration failed\n", __func__);
263 FAIL(HAL_EIO);
264 }
265
266 for (q = 0; q < HAL_NUM_TX_QUEUES; q++)
267 ar5210ResetTxQueue(ah, q);
268
269 if (AH_PRIVATE(ah)->ah_rfkillEnabled)
270 ar5210EnableRfKill(ah);
271
272 /*
273 * Writing to AR_BEACON will start timers. Hence it should be
274 * the last register to be written. Do not reset tsf, do not
275 * enable beacons at this point, but preserve other values
276 * like beaconInterval.
277 */
278 OS_REG_WRITE(ah, AR_BEACON,
279 (OS_REG_READ(ah, AR_BEACON) &
280 ~(AR_BEACON_EN | AR_BEACON_RESET_TSF)));
281
282 /* Restore user-specified slot time and timeouts */
283 if (ahp->ah_sifstime != (u_int) -1)
284 ar5210SetSifsTime(ah, ahp->ah_sifstime);
285 if (ahp->ah_slottime != (u_int) -1)
286 ar5210SetSlotTime(ah, ahp->ah_slottime);
287 if (ahp->ah_acktimeout != (u_int) -1)
288 ar5210SetAckTimeout(ah, ahp->ah_acktimeout);
289 if (ahp->ah_ctstimeout != (u_int) -1)
290 ar5210SetCTSTimeout(ah, ahp->ah_ctstimeout);
291 if (AH_PRIVATE(ah)->ah_diagreg != 0)
292 ar5210UpdateDiagReg(ah, AH_PRIVATE(ah)->ah_diagreg);
293
294 AH_PRIVATE(ah)->ah_opmode = opmode; /* record operating mode */
295
296 HALDEBUG(ah, HAL_DEBUG_RESET, "%s: done\n", __func__);
297
298 return AH_TRUE;
299bad:
300 if (status != AH_NULL)
301 *status = ecode;
302 return AH_FALSE;
303#undef FAIL
304#undef N
305}
306
307static void
308ar5210SetOperatingMode(struct ath_hal *ah, int opmode)
309{
310 struct ath_hal_5210 *ahp = AH5210(ah);
311 uint32_t val;
312
313 val = OS_REG_READ(ah, AR_STA_ID1) & 0xffff;
314 switch (opmode) {
315 case HAL_M_HOSTAP:
316 OS_REG_WRITE(ah, AR_STA_ID1, val
317 | AR_STA_ID1_AP
318 | AR_STA_ID1_NO_PSPOLL
319 | AR_STA_ID1_DESC_ANTENNA
320 | ahp->ah_staId1Defaults);
321 break;
322 case HAL_M_IBSS:
323 OS_REG_WRITE(ah, AR_STA_ID1, val
324 | AR_STA_ID1_ADHOC
325 | AR_STA_ID1_NO_PSPOLL
326 | AR_STA_ID1_DESC_ANTENNA
327 | ahp->ah_staId1Defaults);
328 break;
329 case HAL_M_STA:
330 OS_REG_WRITE(ah, AR_STA_ID1, val
331 | AR_STA_ID1_NO_PSPOLL
332 | AR_STA_ID1_PWR_SV
333 | ahp->ah_staId1Defaults);
334 break;
335 case HAL_M_MONITOR:
336 OS_REG_WRITE(ah, AR_STA_ID1, val
337 | AR_STA_ID1_NO_PSPOLL
338 | ahp->ah_staId1Defaults);
339 break;
340 }
341}
342
343void
344ar5210SetPCUConfig(struct ath_hal *ah)
345{
346 ar5210SetOperatingMode(ah, AH_PRIVATE(ah)->ah_opmode);
347}
348
349/*
350 * Places the PHY and Radio chips into reset. A full reset
351 * must be called to leave this state. The PCI/MAC/PCU are
352 * not placed into reset as we must receive interrupt to
353 * re-enable the hardware.
354 */
355HAL_BOOL
356ar5210PhyDisable(struct ath_hal *ah)
357{
358 return ar5210SetResetReg(ah, AR_RC_RPHY, 10);
359}
360
361/*
362 * Places all of hardware into reset
363 */
364HAL_BOOL
365ar5210Disable(struct ath_hal *ah)
366{
367#define AR_RC_HW (AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC)
368 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE))
369 return AH_FALSE;
370
371 /*
372 * Reset the HW - PCI must be reset after the rest of the
373 * device has been reset
374 */
375 if (!ar5210SetResetReg(ah, AR_RC_HW, AR_RC_SETTLE_TIME))
376 return AH_FALSE;
377 OS_DELAY(1000);
378 (void) ar5210SetResetReg(ah, AR_RC_HW | AR_RC_RPCI, AR_RC_SETTLE_TIME);
379 OS_DELAY(2100); /* 8245 @ 96Mhz hangs with 2000us. */
380
381 return AH_TRUE;
382#undef AR_RC_HW
383}
384
385/*
386 * Places the hardware into reset and then pulls it out of reset
387 */
388HAL_BOOL
389ar5210ChipReset(struct ath_hal *ah, struct ieee80211_channel *chan)
390{
391#define AR_RC_HW (AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC)
392
393 HALDEBUG(ah, HAL_DEBUG_RESET, "%s turbo %s\n", __func__,
394 chan && IEEE80211_IS_CHAN_TURBO(chan) ?
395 "enabled" : "disabled");
396
397 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE))
398 return AH_FALSE;
399
400 /* Place chip in turbo before reset to cleanly reset clocks */
401 OS_REG_WRITE(ah, AR_PHY_FRCTL,
402 chan && IEEE80211_IS_CHAN_TURBO(chan) ? AR_PHY_TURBO_MODE : 0);
403
404 /*
405 * Reset the HW.
406 * PCI must be reset after the rest of the device has been reset.
407 */
408 if (!ar5210SetResetReg(ah, AR_RC_HW, AR_RC_SETTLE_TIME))
409 return AH_FALSE;
410 OS_DELAY(1000);
411 if (!ar5210SetResetReg(ah, AR_RC_HW | AR_RC_RPCI, AR_RC_SETTLE_TIME))
412 return AH_FALSE;
413 OS_DELAY(2100); /* 8245 @ 96Mhz hangs with 2000us. */
414
415 /*
416 * Bring out of sleep mode (AGAIN)
417 *
418 * WARNING WARNING WARNING
419 *
420 * There is a problem with the chip where it doesn't always indicate
421 * that it's awake, so initializePowerUp() will fail.
422 */
423 if (!ar5210SetPowerMode(ah, HAL_PM_AWAKE, AH_TRUE))
424 return AH_FALSE;
425
426 /* Clear warm reset reg */
427 return ar5210SetResetReg(ah, 0, 10);
428#undef AR_RC_HW
429}
430
431enum {
432 FIRPWR_M = 0x03fc0000,
433 FIRPWR_S = 18,
434 KCOARSEHIGH_M = 0x003f8000,
435 KCOARSEHIGH_S = 15,
436 KCOARSELOW_M = 0x00007f80,
437 KCOARSELOW_S = 7,
438 ADCSAT_ICOUNT_M = 0x0001f800,
439 ADCSAT_ICOUNT_S = 11,
440 ADCSAT_THRESH_M = 0x000007e0,
441 ADCSAT_THRESH_S = 5
442};
443
444/*
445 * Recalibrate the lower PHY chips to account for temperature/environment
446 * changes.
447 */
448HAL_BOOL
449ar5210PerCalibrationN(struct ath_hal *ah,
450 struct ieee80211_channel *chan, u_int chainMask,
451 HAL_BOOL longCal, HAL_BOOL *isCalDone)
452{
453 uint32_t regBeacon;
454 uint32_t reg9858, reg985c, reg9868;
455 HAL_CHANNEL_INTERNAL *ichan;
456
457 ichan = ath_hal_checkchannel(ah, chan);
458 if (ichan == AH_NULL)
459 return AH_FALSE;
460 /* Disable tx and rx */
461 ar5210UpdateDiagReg(ah,
462 OS_REG_READ(ah, AR_DIAG_SW) | (AR_DIAG_SW_DIS_TX | AR_DIAG_SW_DIS_RX));
463
464 /* Disable Beacon Enable */
465 regBeacon = OS_REG_READ(ah, AR_BEACON);
466 OS_REG_WRITE(ah, AR_BEACON, regBeacon & ~AR_BEACON_EN);
467
468 /* Delay 4ms to ensure that all tx and rx activity has ceased */
469 OS_DELAY(4000);
470
471 /* Disable AGC to radio traffic */
472 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) | 0x08000000);
473 /* Wait for the AGC traffic to cease. */
474 OS_DELAY(10);
475
476 /* Change Channel to relock synth */
477 if (!ar5210SetChannel(ah, chan))
478 return AH_FALSE;
479
480 /* wait for the synthesizer lock to stabilize */
481 OS_DELAY(1000);
482
483 /* Re-enable AGC to radio traffic */
484 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) & (~0x08000000));
485
486 /*
487 * Configure the AGC so that it is highly unlikely (if not
488 * impossible) for it to send any gain changes to the analog
489 * chip. We store off the current values so that they can
490 * be rewritten below. Setting the following values:
491 * firpwr = -1
492 * Kcoursehigh = -1
493 * Kcourselow = -127
494 * ADCsat_icount = 2
495 * ADCsat_thresh = 12
496 */
497 reg9858 = OS_REG_READ(ah, 0x9858);
498 reg985c = OS_REG_READ(ah, 0x985c);
499 reg9868 = OS_REG_READ(ah, 0x9868);
500
501 OS_REG_WRITE(ah, 0x9858, (reg9858 & ~FIRPWR_M) |
502 ((-1 << FIRPWR_S) & FIRPWR_M));
503 OS_REG_WRITE(ah, 0x985c,
504 (reg985c & ~(KCOARSEHIGH_M | KCOARSELOW_M)) |
505 ((-1 << KCOARSEHIGH_S) & KCOARSEHIGH_M) |
506 ((-127 << KCOARSELOW_S) & KCOARSELOW_M));
507 OS_REG_WRITE(ah, 0x9868,
508 (reg9868 & ~(ADCSAT_ICOUNT_M | ADCSAT_THRESH_M)) |
509 ((2 << ADCSAT_ICOUNT_S) & ADCSAT_ICOUNT_M) |
510 ((12 << ADCSAT_THRESH_S) & ADCSAT_THRESH_M));
511
512 /* Wait for AGC changes to be enacted */
513 OS_DELAY(20);
514
515 /*
516 * We disable RF mix/gain stages for the PGA to avoid a
517 * race condition that will occur with receiving a frame
518 * and performing the AGC calibration. This will be
519 * re-enabled at the end of offset cal. We turn off AGC
520 * writes during this write as it will go over the analog bus.
521 */
522 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) | 0x08000000);
523 OS_DELAY(10); /* wait for the AGC traffic to cease */
524 OS_REG_WRITE(ah, 0x98D4, 0x21);
525 OS_REG_WRITE(ah, 0x9808, OS_REG_READ(ah, 0x9808) & (~0x08000000));
526
527 /* wait to make sure that additional AGC traffic has quiesced */
528 OS_DELAY(1000);
529
530 /* AGC calibration (this was added to make the NF threshold check work) */
531 OS_REG_WRITE(ah, AR_PHY_AGCCTL,
532 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_CAL);
533 if (!ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_CAL, 0)) {
534 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: AGC calibration timeout\n",
535 __func__);
536 }
537
538 /* Rewrite our AGC values we stored off earlier (return AGC to normal operation) */
539 OS_REG_WRITE(ah, 0x9858, reg9858);
540 OS_REG_WRITE(ah, 0x985c, reg985c);
541 OS_REG_WRITE(ah, 0x9868, reg9868);
542
543 /* Perform noise floor and set status */
544 if (!ar5210CalNoiseFloor(ah, ichan)) {
545 /*
546 * Delay 5ms before retrying the noise floor -
547 * just to make sure. We're in an error
548 * condition here
549 */
550 HALDEBUG(ah, HAL_DEBUG_NFCAL | HAL_DEBUG_PERCAL,
551 "%s: Performing 2nd Noise Cal\n", __func__);
552 OS_DELAY(5000);
553 if (!ar5210CalNoiseFloor(ah, ichan))
554 chan->ic_state |= IEEE80211_CHANSTATE_CWINT;
555 }
556
557 /* Clear tx and rx disable bit */
558 ar5210UpdateDiagReg(ah,
559 OS_REG_READ(ah, AR_DIAG_SW) & ~(AR_DIAG_SW_DIS_TX | AR_DIAG_SW_DIS_RX));
560
561 /* Re-enable Beacons */
562 OS_REG_WRITE(ah, AR_BEACON, regBeacon);
563
564 *isCalDone = AH_TRUE;
565
566 return AH_TRUE;
567}
568
569HAL_BOOL
570ar5210PerCalibration(struct ath_hal *ah, struct ieee80211_channel *chan,
571 HAL_BOOL *isIQdone)
572{
573 return ar5210PerCalibrationN(ah, chan, 0x1, AH_TRUE, isIQdone);
574}
575
576HAL_BOOL
577ar5210ResetCalValid(struct ath_hal *ah, const struct ieee80211_channel *chan)
578{
579 return AH_TRUE;
580}
581
582/*
583 * Writes the given reset bit mask into the reset register
584 */
585static HAL_BOOL
586ar5210SetResetReg(struct ath_hal *ah, uint32_t resetMask, u_int delay)
587{
588 uint32_t mask = resetMask ? resetMask : ~0;
589 HAL_BOOL rt;
590
591 OS_REG_WRITE(ah, AR_RC, resetMask);
592 /* need to wait at least 128 clocks when reseting PCI before read */
593 OS_DELAY(delay);
594
595 resetMask &= AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC;
596 mask &= AR_RC_RPCU | AR_RC_RDMA | AR_RC_RPHY | AR_RC_RMAC;
597 rt = ath_hal_wait(ah, AR_RC, mask, resetMask);
598 if ((resetMask & AR_RC_RMAC) == 0) {
599 if (isBigEndian()) {
600 /*
601 * Set CFG, little-endian for descriptor accesses.
602 */
603 mask = INIT_CONFIG_STATUS | AR_CFG_SWTD | AR_CFG_SWRD;
604 OS_REG_WRITE(ah, AR_CFG, mask);
605 } else
606 OS_REG_WRITE(ah, AR_CFG, INIT_CONFIG_STATUS);
607 }
608 return rt;
609}
610
611
612/*
613 * Returns: the pcdac value
614 */
615static uint8_t
616getPcdac(struct ath_hal *ah, const struct tpcMap *pRD, uint8_t dBm)
617{
618 int32_t i;
619 int useNextEntry = AH_FALSE;
620 uint32_t interp;
621
622 for (i = AR_TP_SCALING_ENTRIES - 1; i >= 0; i--) {
623 /* Check for exact entry */
624 if (dBm == AR_I2DBM(i)) {
625 if (pRD->pcdac[i] != 63)
626 return pRD->pcdac[i];
627 useNextEntry = AH_TRUE;
628 } else if (dBm + 1 == AR_I2DBM(i) && i > 0) {
629 /* Interpolate for between entry with a logish scale */
630 if (pRD->pcdac[i] != 63 && pRD->pcdac[i-1] != 63) {
631 interp = (350 * (pRD->pcdac[i] - pRD->pcdac[i-1])) + 999;
632 interp = (interp / 1000) + pRD->pcdac[i-1];
633 return interp;
634 }
635 useNextEntry = AH_TRUE;
636 } else if (useNextEntry == AH_TRUE) {
637 /* Grab the next lowest */
638 if (pRD->pcdac[i] != 63)
639 return pRD->pcdac[i];
640 }
641 }
642
643 /* Return the lowest Entry if we haven't returned */
644 for (i = 0; i < AR_TP_SCALING_ENTRIES; i++)
645 if (pRD->pcdac[i] != 63)
646 return pRD->pcdac[i];
647
648 /* No value to return from table */
649#ifdef AH_DEBUG
650 ath_hal_printf(ah, "%s: empty transmit power table?\n", __func__);
651#endif
652 return 1;
653}
654
655/*
656 * Find or interpolates the gainF value from the table ptr.
657 */
658static uint8_t
659getGainF(struct ath_hal *ah, const struct tpcMap *pRD,
660 uint8_t pcdac, uint8_t *dBm)
661{
662 uint32_t interp;
663 int low, high, i;
664
665 low = high = -1;
666
667 for (i = 0; i < AR_TP_SCALING_ENTRIES; i++) {
668 if(pRD->pcdac[i] == 63)
669 continue;
670 if (pcdac == pRD->pcdac[i]) {
671 *dBm = AR_I2DBM(i);
672 return pRD->gainF[i]; /* Exact Match */
673 }
674 if (pcdac > pRD->pcdac[i])
675 low = i;
676 if (pcdac < pRD->pcdac[i]) {
677 high = i;
678 if (low == -1) {
679 *dBm = AR_I2DBM(i);
680 /* PCDAC is lower than lowest setting */
681 return pRD->gainF[i];
682 }
683 break;
684 }
685 }
686 if (i >= AR_TP_SCALING_ENTRIES && low == -1) {
687 /* No settings were found */
688#ifdef AH_DEBUG
689 ath_hal_printf(ah,
690 "%s: no valid entries in the pcdac table: %d\n",
691 __func__, pcdac);
692#endif
693 return 63;
694 }
695 if (i >= AR_TP_SCALING_ENTRIES) {
696 /* PCDAC setting was above the max setting in the table */
697 *dBm = AR_I2DBM(low);
698 return pRD->gainF[low];
699 }
700 /* Only exact if table has no missing entries */
701 *dBm = (low + high) + 3;
702
703 /*
704 * Perform interpolation between low and high values to find gainF
705 * linearly scale the pcdac between low and high
706 */
707 interp = ((pcdac - pRD->pcdac[low]) * 1000) /
708 (pRD->pcdac[high] - pRD->pcdac[low]);
709 /*
710 * Multiply the scale ratio by the gainF difference
711 * (plus a rnd up factor)
712 */
713 interp = ((interp * (pRD->gainF[high] - pRD->gainF[low])) + 999) / 1000;
714
715 /* Add ratioed gain_f to low gain_f value */
716 return interp + pRD->gainF[low];
717}
718
719HAL_BOOL
720ar5210SetTxPowerLimit(struct ath_hal *ah, uint32_t limit)
721{
722 AH_PRIVATE(ah)->ah_powerLimit = AH_MIN(limit, AR5210_MAX_RATE_POWER);
723 /* XXX flush to h/w */
724 return AH_TRUE;
725}
726
727/*
728 * Get TXPower values and set them in the radio
729 */
730static HAL_BOOL
731setupPowerSettings(struct ath_hal *ah, const struct ieee80211_channel *chan,
732 uint8_t cp[17])
733{
734 uint16_t freq = ath_hal_gethwchannel(ah, chan);
735 const HAL_EEPROM_v1 *ee = AH_PRIVATE(ah)->ah_eeprom;
736 uint8_t gainFRD, gainF36, gainF48, gainF54;
737 uint8_t dBmRD, dBm36, dBm48, dBm54, dontcare;
738 uint32_t rd, group;
739 const struct tpcMap *pRD;
740
741 /* Set OB/DB Values regardless of channel */
742 cp[15] = (ee->ee_biasCurrents >> 4) & 0x7;
743 cp[16] = ee->ee_biasCurrents & 0x7;
744
745 if (freq < 5170 || freq > 5320) {
746 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: invalid channel %u\n",
747 __func__, freq);
748 return AH_FALSE;
749 }
750
751 HALASSERT(ee->ee_version >= AR_EEPROM_VER1 &&
752 ee->ee_version < AR_EEPROM_VER3);
753
754 /* Match regulatory domain */
755 for (rd = 0; rd < AR_REG_DOMAINS_MAX; rd++)
756 if (AH_PRIVATE(ah)->ah_currentRD == ee->ee_regDomain[rd])
757 break;
758 if (rd == AR_REG_DOMAINS_MAX) {
759#ifdef AH_DEBUG
760 ath_hal_printf(ah,
761 "%s: no calibrated regulatory domain matches the "
762 "current regularly domain (0x%0x)\n", __func__,
763 AH_PRIVATE(ah)->ah_currentRD);
764#endif
765 return AH_FALSE;
766 }
767 group = ((freq - 5170) / 10);
768
769 if (group > 11) {
770 /* Pull 5.29 into the 5.27 group */
771 group--;
772 }
773
774 /* Integer divide will set group from 0 to 4 */
775 group = group / 3;
776 pRD = &ee->ee_tpc[group];
777
778 /* Set PC DAC Values */
779 cp[14] = pRD->regdmn[rd];
780 cp[9] = AH_MIN(pRD->regdmn[rd], pRD->rate36);
781 cp[8] = AH_MIN(pRD->regdmn[rd], pRD->rate48);
782 cp[7] = AH_MIN(pRD->regdmn[rd], pRD->rate54);
783
784 /* Find Corresponding gainF values for RD, 36, 48, 54 */
785 gainFRD = getGainF(ah, pRD, pRD->regdmn[rd], &dBmRD);
786 gainF36 = getGainF(ah, pRD, cp[9], &dBm36);
787 gainF48 = getGainF(ah, pRD, cp[8], &dBm48);
788 gainF54 = getGainF(ah, pRD, cp[7], &dBm54);
789
790 /* Power Scale if requested */
791 if (AH_PRIVATE(ah)->ah_tpScale != HAL_TP_SCALE_MAX) {
792 static const uint16_t tpcScaleReductionTable[5] =
793 { 0, 3, 6, 9, AR5210_MAX_RATE_POWER };
794 uint16_t tpScale;
795
796 tpScale = tpcScaleReductionTable[AH_PRIVATE(ah)->ah_tpScale];
797 if (dBmRD < tpScale+3)
798 dBmRD = 3; /* min */
799 else
800 dBmRD -= tpScale;
801 cp[14] = getPcdac(ah, pRD, dBmRD);
802 gainFRD = getGainF(ah, pRD, cp[14], &dontcare);
803 dBm36 = AH_MIN(dBm36, dBmRD);
804 cp[9] = getPcdac(ah, pRD, dBm36);
805 gainF36 = getGainF(ah, pRD, cp[9], &dontcare);
806 dBm48 = AH_MIN(dBm48, dBmRD);
807 cp[8] = getPcdac(ah, pRD, dBm48);
808 gainF48 = getGainF(ah, pRD, cp[8], &dontcare);
809 dBm54 = AH_MIN(dBm54, dBmRD);
810 cp[7] = getPcdac(ah, pRD, dBm54);
811 gainF54 = getGainF(ah, pRD, cp[7], &dontcare);
812 }
813 /* Record current dBm at rate 6 */
814 AH_PRIVATE(ah)->ah_maxPowerLevel = 2*dBmRD;
815
816 cp[13] = cp[12] = cp[11] = cp[10] = cp[14];
817
818 /* Set GainF Values */
819 cp[0] = gainFRD - gainF54;
820 cp[1] = gainFRD - gainF48;
821 cp[2] = gainFRD - gainF36;
822 /* 9, 12, 18, 24 have no gain_delta from 6 */
823 cp[3] = cp[4] = cp[5] = cp[6] = 0;
824 return AH_TRUE;
825}
826
827/*
828 * Places the device in and out of reset and then places sane
829 * values in the registers based on EEPROM config, initialization
830 * vectors (as determined by the mode), and station configuration
831 */
832HAL_BOOL
833ar5210SetTransmitPower(struct ath_hal *ah, const struct ieee80211_channel *chan)
834{
835#define N(a) (sizeof (a) / sizeof (a[0]))
836 static const uint32_t pwr_regs_start[17] = {
837 0x00000000, 0x00000000, 0x00000000,
838 0x00000000, 0x00000000, 0xf0000000,
839 0xcc000000, 0x00000000, 0x00000000,
840 0x00000000, 0x0a000000, 0x000000e2,
841 0x0a000020, 0x01000002, 0x01000018,
842 0x40000000, 0x00000418
843 };
844 uint16_t i;
845 uint8_t cp[sizeof(ar5k0007_pwrSettings)];
846 uint32_t pwr_regs[17];
847
848 OS_MEMCPY(pwr_regs, pwr_regs_start, sizeof(pwr_regs));
849 OS_MEMCPY(cp, ar5k0007_pwrSettings, sizeof(cp));
850
851 /* Check the EEPROM tx power calibration settings */
852 if (!setupPowerSettings(ah, chan, cp)) {
853#ifdef AH_DEBUG
854 ath_hal_printf(ah, "%s: unable to setup power settings\n",
855 __func__);
856#endif
857 return AH_FALSE;
858 }
859 if (cp[15] < 1 || cp[15] > 5) {
860#ifdef AH_DEBUG
861 ath_hal_printf(ah, "%s: OB out of range (%u)\n",
862 __func__, cp[15]);
863#endif
864 return AH_FALSE;
865 }
866 if (cp[16] < 1 || cp[16] > 5) {
867#ifdef AH_DEBUG
868 ath_hal_printf(ah, "%s: DB out of range (%u)\n",
869 __func__, cp[16]);
870#endif
871 return AH_FALSE;
872 }
873
874 /* reverse bits of the transmit power array */
875 for (i = 0; i < 7; i++)
876 cp[i] = ath_hal_reverseBits(cp[i], 5);
877 for (i = 7; i < 15; i++)
878 cp[i] = ath_hal_reverseBits(cp[i], 6);
879
880 /* merge transmit power values into the register - quite gross */
881 pwr_regs[0] |= ((cp[1] << 5) & 0xE0) | (cp[0] & 0x1F);
882 pwr_regs[1] |= ((cp[3] << 7) & 0x80) | ((cp[2] << 2) & 0x7C) |
883 ((cp[1] >> 3) & 0x03);
884 pwr_regs[2] |= ((cp[4] << 4) & 0xF0) | ((cp[3] >> 1) & 0x0F);
885 pwr_regs[3] |= ((cp[6] << 6) & 0xC0) | ((cp[5] << 1) & 0x3E) |
886 ((cp[4] >> 4) & 0x01);
887 pwr_regs[4] |= ((cp[7] << 3) & 0xF8) | ((cp[6] >> 2) & 0x07);
888 pwr_regs[5] |= ((cp[9] << 7) & 0x80) | ((cp[8] << 1) & 0x7E) |
889 ((cp[7] >> 5) & 0x01);
890 pwr_regs[6] |= ((cp[10] << 5) & 0xE0) | ((cp[9] >> 1) & 0x1F);
891 pwr_regs[7] |= ((cp[11] << 3) & 0xF8) | ((cp[10] >> 3) & 0x07);
892 pwr_regs[8] |= ((cp[12] << 1) & 0x7E) | ((cp[11] >> 5) & 0x01);
893 pwr_regs[9] |= ((cp[13] << 5) & 0xE0);
894 pwr_regs[10] |= ((cp[14] << 3) & 0xF8) | ((cp[13] >> 3) & 0x07);
895 pwr_regs[11] |= ((cp[14] >> 5) & 0x01);
896
897 /* Set OB */
898 pwr_regs[8] |= (ath_hal_reverseBits(cp[15], 3) << 7) & 0x80;
899 pwr_regs[9] |= (ath_hal_reverseBits(cp[15], 3) >> 1) & 0x03;
900
901 /* Set DB */
902 pwr_regs[9] |= (ath_hal_reverseBits(cp[16], 3) << 2) & 0x1C;
903
904 /* Write the registers */
905 for (i = 0; i < N(pwr_regs)-1; i++)
906 OS_REG_WRITE(ah, 0x0000989c, pwr_regs[i]);
907 /* last write is a flush */
908 OS_REG_WRITE(ah, 0x000098d4, pwr_regs[i]);
909
910 return AH_TRUE;
911#undef N
912}
913
914/*
915 * Takes the MHz channel value and sets the Channel value
916 *
917 * ASSUMES: Writes enabled to analog bus before AGC is active
918 * or by disabling the AGC.
919 */
920static HAL_BOOL
921ar5210SetChannel(struct ath_hal *ah, struct ieee80211_channel *chan)
922{
923 uint16_t freq = ath_hal_gethwchannel(ah, chan);
924 uint32_t data;
925
926 /* Set the Channel */
927 data = ath_hal_reverseBits((freq - 5120)/10, 5);
928 data = (data << 1) | 0x41;
929 OS_REG_WRITE(ah, AR_PHY(0x27), data);
930 OS_REG_WRITE(ah, AR_PHY(0x30), 0);
931 AH_PRIVATE(ah)->ah_curchan = chan;
932 return AH_TRUE;
933}
934
935int16_t
936ar5210GetNoiseFloor(struct ath_hal *ah)
937{
938 int16_t nf;
939
940 nf = (OS_REG_READ(ah, AR_PHY(25)) >> 19) & 0x1ff;
941 if (nf & 0x100)
942 nf = 0 - ((nf ^ 0x1ff) + 1);
943 return nf;
944}
945
946#define NORMAL_NF_THRESH (-72)
947/*
948 * Peform the noisefloor calibration and check for
949 * any constant channel interference
950 *
951 * Returns: TRUE for a successful noise floor calibration; else FALSE
952 */
953HAL_BOOL
954ar5210CalNoiseFloor(struct ath_hal *ah, HAL_CHANNEL_INTERNAL *ichan)
955{
956 int32_t nf, nfLoops;
957
958 /* Calibrate the noise floor */
959 OS_REG_WRITE(ah, AR_PHY_AGCCTL,
960 OS_REG_READ(ah, AR_PHY_AGCCTL) | AR_PHY_AGC_NF);
961
962 /* Do not read noise floor until it has done the first update */
963 if (!ath_hal_wait(ah, AR_PHY_AGCCTL, AR_PHY_AGC_NF, 0)) {
964#ifdef ATH_HAL_DEBUG
965 ath_hal_printf(ah, " -PHY NF Reg state: 0x%x\n",
966 OS_REG_READ(ah, AR_PHY_AGCCTL));
967 ath_hal_printf(ah, " -MAC Reset Reg state: 0x%x\n",
968 OS_REG_READ(ah, AR_RC));
969 ath_hal_printf(ah, " -PHY Active Reg state: 0x%x\n",
970 OS_REG_READ(ah, AR_PHY_ACTIVE));
971#endif /* ATH_HAL_DEBUG */
972 return AH_FALSE;
973 }
974
975 nf = 0;
976 /* Keep checking until the floor is below the threshold or the nf is done */
977 for (nfLoops = 0; ((nfLoops < 21) && (nf > NORMAL_NF_THRESH)); nfLoops++) {
978 OS_DELAY(1000); /* Sleep for 1 ms */
979 nf = ar5210GetNoiseFloor(ah);
980 }
981
982 if (nf > NORMAL_NF_THRESH) {
983 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: Bad noise cal %d\n",
984 __func__, nf);
985 ichan->rawNoiseFloor = 0;
986 return AH_FALSE;
987 }
988 ichan->rawNoiseFloor = nf;
989 return AH_TRUE;
990}
991
992/*
993 * Adjust NF based on statistical values for 5GHz frequencies.
994 */
995int16_t
996ar5210GetNfAdjust(struct ath_hal *ah, const HAL_CHANNEL_INTERNAL *c)
997{
998 return 0;
999}
1000
1001HAL_RFGAIN
1002ar5210GetRfgain(struct ath_hal *ah)
1003{
1004 return HAL_RFGAIN_INACTIVE;
1005}