4 * Copyright (c) 2004-2007 Reyk Floeter <reyk@openbsd.org>
5 * Copyright (c) 2006-2009 Nick Kossifidis <mickflemm@gmail.com>
6 * Copyright (c) 2007-2008 Jiri Slaby <jirislaby@gmail.com>
7 * Copyright (c) 2008-2009 Felix Fietkau <nbd@openwrt.org>
9 * Permission to use, copy, modify, and distribute this software for any
10 * purpose with or without fee is hereby granted, provided that the above
11 * copyright notice and this permission notice appear in all copies.
13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 #include <linux/delay.h>
24 #include <linux/slab.h>
25 #include <asm/unaligned.h>
39 * Get the PHY Chip revision
41 u16
ath5k_hw_radio_revision(struct ath5k_hw
*ah
, unsigned int chan
)
48 * Set the radio chip access register
52 ath5k_hw_reg_write(ah
, AR5K_PHY_SHIFT_2GHZ
, AR5K_PHY(0));
55 ath5k_hw_reg_write(ah
, AR5K_PHY_SHIFT_5GHZ
, AR5K_PHY(0));
63 /* ...wait until PHY is ready and read the selected radio revision */
64 ath5k_hw_reg_write(ah
, 0x00001c16, AR5K_PHY(0x34));
66 for (i
= 0; i
< 8; i
++)
67 ath5k_hw_reg_write(ah
, 0x00010000, AR5K_PHY(0x20));
69 if (ah
->ah_version
== AR5K_AR5210
) {
70 srev
= ath5k_hw_reg_read(ah
, AR5K_PHY(256) >> 28) & 0xf;
71 ret
= (u16
)ath5k_hw_bitswap(srev
, 4) + 1;
73 srev
= (ath5k_hw_reg_read(ah
, AR5K_PHY(0x100)) >> 24) & 0xff;
74 ret
= (u16
)ath5k_hw_bitswap(((srev
& 0xf0) >> 4) |
75 ((srev
& 0x0f) << 4), 8);
78 /* Reset to the 5GHz mode */
79 ath5k_hw_reg_write(ah
, AR5K_PHY_SHIFT_5GHZ
, AR5K_PHY(0));
85 * Check if a channel is supported
87 bool ath5k_channel_ok(struct ath5k_hw
*ah
, u16 freq
, unsigned int flags
)
89 /* Check if the channel is in our supported range */
90 if (flags
& CHANNEL_2GHZ
) {
91 if ((freq
>= ah
->ah_capabilities
.cap_range
.range_2ghz_min
) &&
92 (freq
<= ah
->ah_capabilities
.cap_range
.range_2ghz_max
))
94 } else if (flags
& CHANNEL_5GHZ
)
95 if ((freq
>= ah
->ah_capabilities
.cap_range
.range_5ghz_min
) &&
96 (freq
<= ah
->ah_capabilities
.cap_range
.range_5ghz_max
))
102 bool ath5k_hw_chan_has_spur_noise(struct ath5k_hw
*ah
,
103 struct ieee80211_channel
*channel
)
107 if ((ah
->ah_radio
== AR5K_RF5112
) ||
108 (ah
->ah_radio
== AR5K_RF5413
) ||
109 (ah
->ah_radio
== AR5K_RF2413
) ||
110 (ah
->ah_mac_version
== (AR5K_SREV_AR2417
>> 4)))
115 if ((channel
->center_freq
% refclk_freq
!= 0) &&
116 ((channel
->center_freq
% refclk_freq
< 10) ||
117 (channel
->center_freq
% refclk_freq
> 22)))
124 * Used to modify RF Banks before writing them to AR5K_RF_BUFFER
126 static unsigned int ath5k_hw_rfb_op(struct ath5k_hw
*ah
,
127 const struct ath5k_rf_reg
*rf_regs
,
128 u32 val
, u8 reg_id
, bool set
)
130 const struct ath5k_rf_reg
*rfreg
= NULL
;
131 u8 offset
, bank
, num_bits
, col
, position
;
133 u32 mask
, data
, last_bit
, bits_shifted
, first_bit
;
139 rfb
= ah
->ah_rf_banks
;
141 for (i
= 0; i
< ah
->ah_rf_regs_count
; i
++) {
142 if (rf_regs
[i
].index
== reg_id
) {
148 if (rfb
== NULL
|| rfreg
== NULL
) {
149 ATH5K_PRINTF("Rf register not found!\n");
150 /* should not happen */
155 num_bits
= rfreg
->field
.len
;
156 first_bit
= rfreg
->field
.pos
;
157 col
= rfreg
->field
.col
;
159 /* first_bit is an offset from bank's
160 * start. Since we have all banks on
161 * the same array, we use this offset
162 * to mark each bank's start */
163 offset
= ah
->ah_offset
[bank
];
166 if (!(col
<= 3 && num_bits
<= 32 && first_bit
+ num_bits
<= 319)) {
167 ATH5K_PRINTF("invalid values at offset %u\n", offset
);
171 entry
= ((first_bit
- 1) / 8) + offset
;
172 position
= (first_bit
- 1) % 8;
175 data
= ath5k_hw_bitswap(val
, num_bits
);
177 for (bits_shifted
= 0, bits_left
= num_bits
; bits_left
> 0;
178 position
= 0, entry
++) {
180 last_bit
= (position
+ bits_left
> 8) ? 8 :
181 position
+ bits_left
;
183 mask
= (((1 << last_bit
) - 1) ^ ((1 << position
) - 1)) <<
188 rfb
[entry
] |= ((data
<< position
) << (col
* 8)) & mask
;
189 data
>>= (8 - position
);
191 data
|= (((rfb
[entry
] & mask
) >> (col
* 8)) >> position
)
193 bits_shifted
+= last_bit
- position
;
196 bits_left
-= 8 - position
;
199 data
= set
? 1 : ath5k_hw_bitswap(data
, num_bits
);
205 * ath5k_hw_write_ofdm_timings - set OFDM timings on AR5212
207 * @ah: the &struct ath5k_hw
208 * @channel: the currently set channel upon reset
210 * Write the delta slope coefficient (used on pilot tracking ?) for OFDM
211 * operation on the AR5212 upon reset. This is a helper for ath5k_hw_phy_init.
213 * Since delta slope is floating point we split it on its exponent and
214 * mantissa and provide these values on hw.
216 * For more infos i think this patent is related
217 * http://www.freepatentsonline.com/7184495.html
219 static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw
*ah
,
220 struct ieee80211_channel
*channel
)
222 /* Get exponent and mantissa and set it */
223 u32 coef_scaled
, coef_exp
, coef_man
,
224 ds_coef_exp
, ds_coef_man
, clock
;
226 BUG_ON(!(ah
->ah_version
== AR5K_AR5212
) ||
227 !(channel
->hw_value
& CHANNEL_OFDM
));
230 * ALGO: coef = (5 * clock / carrier_freq) / 2
231 * we scale coef by shifting clock value by 24 for
232 * better precision since we use integers */
233 switch (ah
->ah_bwmode
) {
234 case AR5K_BWMODE_40MHZ
:
237 case AR5K_BWMODE_10MHZ
:
240 case AR5K_BWMODE_5MHZ
:
247 coef_scaled
= ((5 * (clock
<< 24)) / 2) / channel
->center_freq
;
250 * ALGO: coef_exp = 14 - highest set bit position */
251 coef_exp
= ilog2(coef_scaled
);
253 /* Doesn't make sense if it's zero*/
254 if (!coef_scaled
|| !coef_exp
)
257 /* Note: we've shifted coef_scaled by 24 */
258 coef_exp
= 14 - (coef_exp
- 24);
261 /* Get mantissa (significant digits)
262 * ALGO: coef_mant = floor(coef_scaled* 2^coef_exp+0.5) */
263 coef_man
= coef_scaled
+
264 (1 << (24 - coef_exp
- 1));
266 /* Calculate delta slope coefficient exponent
267 * and mantissa (remove scaling) and set them on hw */
268 ds_coef_man
= coef_man
>> (24 - coef_exp
);
269 ds_coef_exp
= coef_exp
- 16;
271 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_TIMING_3
,
272 AR5K_PHY_TIMING_3_DSC_MAN
, ds_coef_man
);
273 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_TIMING_3
,
274 AR5K_PHY_TIMING_3_DSC_EXP
, ds_coef_exp
);
279 int ath5k_hw_phy_disable(struct ath5k_hw
*ah
)
282 ath5k_hw_reg_write(ah
, AR5K_PHY_ACT_DISABLE
, AR5K_PHY_ACT
);
288 * Wait for synth to settle
290 static void ath5k_hw_wait_for_synth(struct ath5k_hw
*ah
,
291 struct ieee80211_channel
*channel
)
294 * On 5211+ read activation -> rx delay
295 * and use it (100ns steps).
297 if (ah
->ah_version
!= AR5K_AR5210
) {
299 delay
= ath5k_hw_reg_read(ah
, AR5K_PHY_RX_DELAY
) &
301 delay
= (channel
->hw_value
& CHANNEL_CCK
) ?
302 ((delay
<< 2) / 22) : (delay
/ 10);
303 if (ah
->ah_bwmode
== AR5K_BWMODE_10MHZ
)
305 if (ah
->ah_bwmode
== AR5K_BWMODE_5MHZ
)
307 /* XXX: /2 on turbo ? Let's be safe
316 /**********************\
317 * RF Gain optimization *
318 \**********************/
321 * This code is used to optimize RF gain on different environments
322 * (temperature mostly) based on feedback from a power detector.
324 * It's only used on RF5111 and RF5112, later RF chips seem to have
325 * auto adjustment on hw -notice they have a much smaller BANK 7 and
326 * no gain optimization ladder-.
328 * For more infos check out this patent doc
329 * http://www.freepatentsonline.com/7400691.html
331 * This paper describes power drops as seen on the receiver due to
333 * http://www.cnri.dit.ie/publications/ICT08%20-%20Practical%20Issues
334 * %20of%20Power%20Control.pdf
336 * And this is the MadWiFi bug entry related to the above
337 * http://madwifi-project.org/ticket/1659
338 * with various measurements and diagrams
340 * TODO: Deal with power drops due to probes by setting an appropriate
341 * tx power on the probe packets ! Make this part of the calibration process.
344 /* Initialize ah_gain during attach */
345 int ath5k_hw_rfgain_opt_init(struct ath5k_hw
*ah
)
347 /* Initialize the gain optimization values */
348 switch (ah
->ah_radio
) {
350 ah
->ah_gain
.g_step_idx
= rfgain_opt_5111
.go_default
;
351 ah
->ah_gain
.g_low
= 20;
352 ah
->ah_gain
.g_high
= 35;
353 ah
->ah_gain
.g_state
= AR5K_RFGAIN_ACTIVE
;
356 ah
->ah_gain
.g_step_idx
= rfgain_opt_5112
.go_default
;
357 ah
->ah_gain
.g_low
= 20;
358 ah
->ah_gain
.g_high
= 85;
359 ah
->ah_gain
.g_state
= AR5K_RFGAIN_ACTIVE
;
368 /* Schedule a gain probe check on the next transmitted packet.
369 * That means our next packet is going to be sent with lower
370 * tx power and a Peak to Average Power Detector (PAPD) will try
371 * to measure the gain.
373 * XXX: How about forcing a tx packet (bypassing PCU arbitrator etc)
374 * just after we enable the probe so that we don't mess with
375 * standard traffic ? Maybe it's time to use sw interrupts and
376 * a probe tasklet !!!
378 static void ath5k_hw_request_rfgain_probe(struct ath5k_hw
*ah
)
381 /* Skip if gain calibration is inactive or
382 * we already handle a probe request */
383 if (ah
->ah_gain
.g_state
!= AR5K_RFGAIN_ACTIVE
)
386 /* Send the packet with 2dB below max power as
387 * patent doc suggest */
388 ath5k_hw_reg_write(ah
, AR5K_REG_SM(ah
->ah_txpower
.txp_ofdm
- 4,
389 AR5K_PHY_PAPD_PROBE_TXPOWER
) |
390 AR5K_PHY_PAPD_PROBE_TX_NEXT
, AR5K_PHY_PAPD_PROBE
);
392 ah
->ah_gain
.g_state
= AR5K_RFGAIN_READ_REQUESTED
;
396 /* Calculate gain_F measurement correction
397 * based on the current step for RF5112 rev. 2 */
398 static u32
ath5k_hw_rf_gainf_corr(struct ath5k_hw
*ah
)
402 const struct ath5k_gain_opt
*go
;
403 const struct ath5k_gain_opt_step
*g_step
;
404 const struct ath5k_rf_reg
*rf_regs
;
406 /* Only RF5112 Rev. 2 supports it */
407 if ((ah
->ah_radio
!= AR5K_RF5112
) ||
408 (ah
->ah_radio_5ghz_revision
<= AR5K_SREV_RAD_5112A
))
411 go
= &rfgain_opt_5112
;
412 rf_regs
= rf_regs_5112a
;
413 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5112a
);
415 g_step
= &go
->go_step
[ah
->ah_gain
.g_step_idx
];
417 if (ah
->ah_rf_banks
== NULL
)
420 rf
= ah
->ah_rf_banks
;
421 ah
->ah_gain
.g_f_corr
= 0;
423 /* No VGA (Variable Gain Amplifier) override, skip */
424 if (ath5k_hw_rfb_op(ah
, rf_regs
, 0, AR5K_RF_MIXVGA_OVR
, false) != 1)
427 /* Mix gain stepping */
428 step
= ath5k_hw_rfb_op(ah
, rf_regs
, 0, AR5K_RF_MIXGAIN_STEP
, false);
430 /* Mix gain override */
431 mix
= g_step
->gos_param
[0];
435 ah
->ah_gain
.g_f_corr
= step
* 2;
438 ah
->ah_gain
.g_f_corr
= (step
- 5) * 2;
441 ah
->ah_gain
.g_f_corr
= step
;
444 ah
->ah_gain
.g_f_corr
= 0;
448 return ah
->ah_gain
.g_f_corr
;
451 /* Check if current gain_F measurement is in the range of our
452 * power detector windows. If we get a measurement outside range
453 * we know it's not accurate (detectors can't measure anything outside
454 * their detection window) so we must ignore it */
455 static bool ath5k_hw_rf_check_gainf_readback(struct ath5k_hw
*ah
)
457 const struct ath5k_rf_reg
*rf_regs
;
458 u32 step
, mix_ovr
, level
[4];
461 if (ah
->ah_rf_banks
== NULL
)
464 rf
= ah
->ah_rf_banks
;
466 if (ah
->ah_radio
== AR5K_RF5111
) {
468 rf_regs
= rf_regs_5111
;
469 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5111
);
471 step
= ath5k_hw_rfb_op(ah
, rf_regs
, 0, AR5K_RF_RFGAIN_STEP
,
475 level
[1] = (step
== 63) ? 50 : step
+ 4;
476 level
[2] = (step
!= 63) ? 64 : level
[0];
477 level
[3] = level
[2] + 50;
479 ah
->ah_gain
.g_high
= level
[3] -
480 (step
== 63 ? AR5K_GAIN_DYN_ADJUST_HI_MARGIN
: -5);
481 ah
->ah_gain
.g_low
= level
[0] +
482 (step
== 63 ? AR5K_GAIN_DYN_ADJUST_LO_MARGIN
: 0);
485 rf_regs
= rf_regs_5112
;
486 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5112
);
488 mix_ovr
= ath5k_hw_rfb_op(ah
, rf_regs
, 0, AR5K_RF_MIXVGA_OVR
,
491 level
[0] = level
[2] = 0;
494 level
[1] = level
[3] = 83;
496 level
[1] = level
[3] = 107;
497 ah
->ah_gain
.g_high
= 55;
501 return (ah
->ah_gain
.g_current
>= level
[0] &&
502 ah
->ah_gain
.g_current
<= level
[1]) ||
503 (ah
->ah_gain
.g_current
>= level
[2] &&
504 ah
->ah_gain
.g_current
<= level
[3]);
507 /* Perform gain_F adjustment by choosing the right set
508 * of parameters from RF gain optimization ladder */
509 static s8
ath5k_hw_rf_gainf_adjust(struct ath5k_hw
*ah
)
511 const struct ath5k_gain_opt
*go
;
512 const struct ath5k_gain_opt_step
*g_step
;
515 switch (ah
->ah_radio
) {
517 go
= &rfgain_opt_5111
;
520 go
= &rfgain_opt_5112
;
526 g_step
= &go
->go_step
[ah
->ah_gain
.g_step_idx
];
528 if (ah
->ah_gain
.g_current
>= ah
->ah_gain
.g_high
) {
530 /* Reached maximum */
531 if (ah
->ah_gain
.g_step_idx
== 0)
534 for (ah
->ah_gain
.g_target
= ah
->ah_gain
.g_current
;
535 ah
->ah_gain
.g_target
>= ah
->ah_gain
.g_high
&&
536 ah
->ah_gain
.g_step_idx
> 0;
537 g_step
= &go
->go_step
[ah
->ah_gain
.g_step_idx
])
538 ah
->ah_gain
.g_target
-= 2 *
539 (go
->go_step
[--(ah
->ah_gain
.g_step_idx
)].gos_gain
-
546 if (ah
->ah_gain
.g_current
<= ah
->ah_gain
.g_low
) {
548 /* Reached minimum */
549 if (ah
->ah_gain
.g_step_idx
== (go
->go_steps_count
- 1))
552 for (ah
->ah_gain
.g_target
= ah
->ah_gain
.g_current
;
553 ah
->ah_gain
.g_target
<= ah
->ah_gain
.g_low
&&
554 ah
->ah_gain
.g_step_idx
< go
->go_steps_count
- 1;
555 g_step
= &go
->go_step
[ah
->ah_gain
.g_step_idx
])
556 ah
->ah_gain
.g_target
-= 2 *
557 (go
->go_step
[++ah
->ah_gain
.g_step_idx
].gos_gain
-
565 ATH5K_DBG(ah
, ATH5K_DEBUG_CALIBRATE
,
566 "ret %d, gain step %u, current gain %u, target gain %u\n",
567 ret
, ah
->ah_gain
.g_step_idx
, ah
->ah_gain
.g_current
,
568 ah
->ah_gain
.g_target
);
573 /* Main callback for thermal RF gain calibration engine
574 * Check for a new gain reading and schedule an adjustment
577 * TODO: Use sw interrupt to schedule reset if gain_F needs
579 enum ath5k_rfgain
ath5k_hw_gainf_calibrate(struct ath5k_hw
*ah
)
582 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
584 if (ah
->ah_rf_banks
== NULL
||
585 ah
->ah_gain
.g_state
== AR5K_RFGAIN_INACTIVE
)
586 return AR5K_RFGAIN_INACTIVE
;
588 /* No check requested, either engine is inactive
589 * or an adjustment is already requested */
590 if (ah
->ah_gain
.g_state
!= AR5K_RFGAIN_READ_REQUESTED
)
593 /* Read the PAPD (Peak to Average Power Detector)
595 data
= ath5k_hw_reg_read(ah
, AR5K_PHY_PAPD_PROBE
);
597 /* No probe is scheduled, read gain_F measurement */
598 if (!(data
& AR5K_PHY_PAPD_PROBE_TX_NEXT
)) {
599 ah
->ah_gain
.g_current
= data
>> AR5K_PHY_PAPD_PROBE_GAINF_S
;
600 type
= AR5K_REG_MS(data
, AR5K_PHY_PAPD_PROBE_TYPE
);
602 /* If tx packet is CCK correct the gain_F measurement
603 * by cck ofdm gain delta */
604 if (type
== AR5K_PHY_PAPD_PROBE_TYPE_CCK
) {
605 if (ah
->ah_radio_5ghz_revision
>= AR5K_SREV_RAD_5112A
)
606 ah
->ah_gain
.g_current
+=
607 ee
->ee_cck_ofdm_gain_delta
;
609 ah
->ah_gain
.g_current
+=
610 AR5K_GAIN_CCK_PROBE_CORR
;
613 /* Further correct gain_F measurement for
615 if (ah
->ah_radio_5ghz_revision
>= AR5K_SREV_RAD_5112A
) {
616 ath5k_hw_rf_gainf_corr(ah
);
617 ah
->ah_gain
.g_current
=
618 ah
->ah_gain
.g_current
>= ah
->ah_gain
.g_f_corr
?
619 (ah
->ah_gain
.g_current
- ah
->ah_gain
.g_f_corr
) :
623 /* Check if measurement is ok and if we need
624 * to adjust gain, schedule a gain adjustment,
625 * else switch back to the active state */
626 if (ath5k_hw_rf_check_gainf_readback(ah
) &&
627 AR5K_GAIN_CHECK_ADJUST(&ah
->ah_gain
) &&
628 ath5k_hw_rf_gainf_adjust(ah
)) {
629 ah
->ah_gain
.g_state
= AR5K_RFGAIN_NEED_CHANGE
;
631 ah
->ah_gain
.g_state
= AR5K_RFGAIN_ACTIVE
;
636 return ah
->ah_gain
.g_state
;
639 /* Write initial RF gain table to set the RF sensitivity
640 * this one works on all RF chips and has nothing to do
641 * with gain_F calibration */
642 static int ath5k_hw_rfgain_init(struct ath5k_hw
*ah
, enum ieee80211_band band
)
644 const struct ath5k_ini_rfgain
*ath5k_rfg
;
645 unsigned int i
, size
, index
;
647 switch (ah
->ah_radio
) {
649 ath5k_rfg
= rfgain_5111
;
650 size
= ARRAY_SIZE(rfgain_5111
);
653 ath5k_rfg
= rfgain_5112
;
654 size
= ARRAY_SIZE(rfgain_5112
);
657 ath5k_rfg
= rfgain_2413
;
658 size
= ARRAY_SIZE(rfgain_2413
);
661 ath5k_rfg
= rfgain_2316
;
662 size
= ARRAY_SIZE(rfgain_2316
);
665 ath5k_rfg
= rfgain_5413
;
666 size
= ARRAY_SIZE(rfgain_5413
);
670 ath5k_rfg
= rfgain_2425
;
671 size
= ARRAY_SIZE(rfgain_2425
);
677 index
= (band
== IEEE80211_BAND_2GHZ
) ? 1 : 0;
679 for (i
= 0; i
< size
; i
++) {
681 ath5k_hw_reg_write(ah
, ath5k_rfg
[i
].rfg_value
[index
],
682 (u32
)ath5k_rfg
[i
].rfg_register
);
690 /********************\
691 * RF Registers setup *
692 \********************/
695 * Setup RF registers by writing RF buffer on hw
697 static int ath5k_hw_rfregs_init(struct ath5k_hw
*ah
,
698 struct ieee80211_channel
*channel
, unsigned int mode
)
700 const struct ath5k_rf_reg
*rf_regs
;
701 const struct ath5k_ini_rfbuffer
*ini_rfb
;
702 const struct ath5k_gain_opt
*go
= NULL
;
703 const struct ath5k_gain_opt_step
*g_step
;
704 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
707 int i
, obdb
= -1, bank
= -1;
709 switch (ah
->ah_radio
) {
711 rf_regs
= rf_regs_5111
;
712 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5111
);
714 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_5111
);
715 go
= &rfgain_opt_5111
;
718 if (ah
->ah_radio_5ghz_revision
>= AR5K_SREV_RAD_5112A
) {
719 rf_regs
= rf_regs_5112a
;
720 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5112a
);
722 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_5112a
);
724 rf_regs
= rf_regs_5112
;
725 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5112
);
727 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_5112
);
729 go
= &rfgain_opt_5112
;
732 rf_regs
= rf_regs_2413
;
733 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_2413
);
735 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_2413
);
738 rf_regs
= rf_regs_2316
;
739 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_2316
);
741 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_2316
);
744 rf_regs
= rf_regs_5413
;
745 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_5413
);
747 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_5413
);
750 rf_regs
= rf_regs_2425
;
751 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_2425
);
753 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_2317
);
756 rf_regs
= rf_regs_2425
;
757 ah
->ah_rf_regs_count
= ARRAY_SIZE(rf_regs_2425
);
758 if (ah
->ah_mac_srev
< AR5K_SREV_AR2417
) {
760 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_2425
);
763 ah
->ah_rf_banks_size
= ARRAY_SIZE(rfb_2417
);
770 /* If it's the first time we set RF buffer, allocate
771 * ah->ah_rf_banks based on ah->ah_rf_banks_size
773 if (ah
->ah_rf_banks
== NULL
) {
774 ah
->ah_rf_banks
= kmalloc(sizeof(u32
) * ah
->ah_rf_banks_size
,
776 if (ah
->ah_rf_banks
== NULL
) {
777 ATH5K_ERR(ah
, "out of memory\n");
782 /* Copy values to modify them */
783 rfb
= ah
->ah_rf_banks
;
785 for (i
= 0; i
< ah
->ah_rf_banks_size
; i
++) {
786 if (ini_rfb
[i
].rfb_bank
>= AR5K_MAX_RF_BANKS
) {
787 ATH5K_ERR(ah
, "invalid bank\n");
791 /* Bank changed, write down the offset */
792 if (bank
!= ini_rfb
[i
].rfb_bank
) {
793 bank
= ini_rfb
[i
].rfb_bank
;
794 ah
->ah_offset
[bank
] = i
;
797 rfb
[i
] = ini_rfb
[i
].rfb_mode_data
[mode
];
800 /* Set Output and Driver bias current (OB/DB) */
801 if (channel
->hw_value
& CHANNEL_2GHZ
) {
803 if (channel
->hw_value
& CHANNEL_CCK
)
804 ee_mode
= AR5K_EEPROM_MODE_11B
;
806 ee_mode
= AR5K_EEPROM_MODE_11G
;
808 /* For RF511X/RF211X combination we
809 * use b_OB and b_DB parameters stored
810 * in eeprom on ee->ee_ob[ee_mode][0]
812 * For all other chips we use OB/DB for 2GHz
813 * stored in the b/g modal section just like
814 * 802.11a on ee->ee_ob[ee_mode][1] */
815 if ((ah
->ah_radio
== AR5K_RF5111
) ||
816 (ah
->ah_radio
== AR5K_RF5112
))
821 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_ob
[ee_mode
][obdb
],
822 AR5K_RF_OB_2GHZ
, true);
824 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_db
[ee_mode
][obdb
],
825 AR5K_RF_DB_2GHZ
, true);
827 /* RF5111 always needs OB/DB for 5GHz, even if we use 2GHz */
828 } else if ((channel
->hw_value
& CHANNEL_5GHZ
) ||
829 (ah
->ah_radio
== AR5K_RF5111
)) {
831 /* For 11a, Turbo and XR we need to choose
832 * OB/DB based on frequency range */
833 ee_mode
= AR5K_EEPROM_MODE_11A
;
834 obdb
= channel
->center_freq
>= 5725 ? 3 :
835 (channel
->center_freq
>= 5500 ? 2 :
836 (channel
->center_freq
>= 5260 ? 1 :
837 (channel
->center_freq
> 4000 ? 0 : -1)));
842 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_ob
[ee_mode
][obdb
],
843 AR5K_RF_OB_5GHZ
, true);
845 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_db
[ee_mode
][obdb
],
846 AR5K_RF_DB_5GHZ
, true);
849 g_step
= &go
->go_step
[ah
->ah_gain
.g_step_idx
];
851 /* Set turbo mode (N/A on RF5413) */
852 if ((ah
->ah_bwmode
== AR5K_BWMODE_40MHZ
) &&
853 (ah
->ah_radio
!= AR5K_RF5413
))
854 ath5k_hw_rfb_op(ah
, rf_regs
, 1, AR5K_RF_TURBO
, false);
856 /* Bank Modifications (chip-specific) */
857 if (ah
->ah_radio
== AR5K_RF5111
) {
859 /* Set gain_F settings according to current step */
860 if (channel
->hw_value
& CHANNEL_OFDM
) {
862 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_FRAME_CTL
,
863 AR5K_PHY_FRAME_CTL_TX_CLIP
,
864 g_step
->gos_param
[0]);
866 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[1],
867 AR5K_RF_PWD_90
, true);
869 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[2],
870 AR5K_RF_PWD_84
, true);
872 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[3],
873 AR5K_RF_RFGAIN_SEL
, true);
875 /* We programmed gain_F parameters, switch back
877 ah
->ah_gain
.g_state
= AR5K_RFGAIN_ACTIVE
;
883 ath5k_hw_rfb_op(ah
, rf_regs
, !ee
->ee_xpd
[ee_mode
],
884 AR5K_RF_PWD_XPD
, true);
886 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_x_gain
[ee_mode
],
887 AR5K_RF_XPD_GAIN
, true);
889 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_i_gain
[ee_mode
],
890 AR5K_RF_GAIN_I
, true);
892 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_xpd
[ee_mode
],
893 AR5K_RF_PLO_SEL
, true);
895 /* Tweak power detectors for half/quarter rate support */
896 if (ah
->ah_bwmode
== AR5K_BWMODE_5MHZ
||
897 ah
->ah_bwmode
== AR5K_BWMODE_10MHZ
) {
900 ath5k_hw_rfb_op(ah
, rf_regs
, 0x1f,
901 AR5K_RF_WAIT_S
, true);
903 wait_i
= (ah
->ah_bwmode
== AR5K_BWMODE_5MHZ
) ?
906 ath5k_hw_rfb_op(ah
, rf_regs
, wait_i
,
907 AR5K_RF_WAIT_I
, true);
908 ath5k_hw_rfb_op(ah
, rf_regs
, 3,
909 AR5K_RF_MAX_TIME
, true);
914 if (ah
->ah_radio
== AR5K_RF5112
) {
916 /* Set gain_F settings according to current step */
917 if (channel
->hw_value
& CHANNEL_OFDM
) {
919 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[0],
920 AR5K_RF_MIXGAIN_OVR
, true);
922 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[1],
923 AR5K_RF_PWD_138
, true);
925 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[2],
926 AR5K_RF_PWD_137
, true);
928 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[3],
929 AR5K_RF_PWD_136
, true);
931 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[4],
932 AR5K_RF_PWD_132
, true);
934 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[5],
935 AR5K_RF_PWD_131
, true);
937 ath5k_hw_rfb_op(ah
, rf_regs
, g_step
->gos_param
[6],
938 AR5K_RF_PWD_130
, true);
940 /* We programmed gain_F parameters, switch back
942 ah
->ah_gain
.g_state
= AR5K_RFGAIN_ACTIVE
;
947 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_xpd
[ee_mode
],
948 AR5K_RF_XPD_SEL
, true);
950 if (ah
->ah_radio_5ghz_revision
< AR5K_SREV_RAD_5112A
) {
951 /* Rev. 1 supports only one xpd */
952 ath5k_hw_rfb_op(ah
, rf_regs
,
953 ee
->ee_x_gain
[ee_mode
],
954 AR5K_RF_XPD_GAIN
, true);
957 u8
*pdg_curve_to_idx
= ee
->ee_pdc_to_idx
[ee_mode
];
958 if (ee
->ee_pd_gains
[ee_mode
] > 1) {
959 ath5k_hw_rfb_op(ah
, rf_regs
,
961 AR5K_RF_PD_GAIN_LO
, true);
962 ath5k_hw_rfb_op(ah
, rf_regs
,
964 AR5K_RF_PD_GAIN_HI
, true);
966 ath5k_hw_rfb_op(ah
, rf_regs
,
968 AR5K_RF_PD_GAIN_LO
, true);
969 ath5k_hw_rfb_op(ah
, rf_regs
,
971 AR5K_RF_PD_GAIN_HI
, true);
974 /* Lower synth voltage on Rev 2 */
975 if (ah
->ah_radio
== AR5K_RF5112
&&
976 (ah
->ah_radio_5ghz_revision
& AR5K_SREV_REV
) > 0) {
977 ath5k_hw_rfb_op(ah
, rf_regs
, 2,
978 AR5K_RF_HIGH_VC_CP
, true);
980 ath5k_hw_rfb_op(ah
, rf_regs
, 2,
981 AR5K_RF_MID_VC_CP
, true);
983 ath5k_hw_rfb_op(ah
, rf_regs
, 2,
984 AR5K_RF_LOW_VC_CP
, true);
986 ath5k_hw_rfb_op(ah
, rf_regs
, 2,
987 AR5K_RF_PUSH_UP
, true);
990 /* Decrease power consumption on 5213+ BaseBand */
991 if (ah
->ah_phy_revision
>= AR5K_SREV_PHY_5212A
) {
992 ath5k_hw_rfb_op(ah
, rf_regs
, 1,
993 AR5K_RF_PAD2GND
, true);
995 ath5k_hw_rfb_op(ah
, rf_regs
, 1,
996 AR5K_RF_XB2_LVL
, true);
998 ath5k_hw_rfb_op(ah
, rf_regs
, 1,
999 AR5K_RF_XB5_LVL
, true);
1001 ath5k_hw_rfb_op(ah
, rf_regs
, 1,
1002 AR5K_RF_PWD_167
, true);
1004 ath5k_hw_rfb_op(ah
, rf_regs
, 1,
1005 AR5K_RF_PWD_166
, true);
1009 ath5k_hw_rfb_op(ah
, rf_regs
, ee
->ee_i_gain
[ee_mode
],
1010 AR5K_RF_GAIN_I
, true);
1012 /* Tweak power detector for half/quarter rates */
1013 if (ah
->ah_bwmode
== AR5K_BWMODE_5MHZ
||
1014 ah
->ah_bwmode
== AR5K_BWMODE_10MHZ
) {
1017 pd_delay
= (ah
->ah_bwmode
== AR5K_BWMODE_5MHZ
) ?
1020 ath5k_hw_rfb_op(ah
, rf_regs
, pd_delay
,
1021 AR5K_RF_PD_PERIOD_A
, true);
1022 ath5k_hw_rfb_op(ah
, rf_regs
, 0xf,
1023 AR5K_RF_PD_DELAY_A
, true);
1028 if (ah
->ah_radio
== AR5K_RF5413
&&
1029 channel
->hw_value
& CHANNEL_2GHZ
) {
1031 ath5k_hw_rfb_op(ah
, rf_regs
, 1, AR5K_RF_DERBY_CHAN_SEL_MODE
,
1034 /* Set optimum value for early revisions (on pci-e chips) */
1035 if (ah
->ah_mac_srev
>= AR5K_SREV_AR5424
&&
1036 ah
->ah_mac_srev
< AR5K_SREV_AR5413
)
1037 ath5k_hw_rfb_op(ah
, rf_regs
, ath5k_hw_bitswap(6, 3),
1038 AR5K_RF_PWD_ICLOBUF_2G
, true);
1042 /* Write RF banks on hw */
1043 for (i
= 0; i
< ah
->ah_rf_banks_size
; i
++) {
1045 ath5k_hw_reg_write(ah
, rfb
[i
], ini_rfb
[i
].rfb_ctrl_register
);
1052 /**************************\
1053 PHY/RF channel functions
1054 \**************************/
1057 * Conversion needed for RF5110
1059 static u32
ath5k_hw_rf5110_chan2athchan(struct ieee80211_channel
*channel
)
1064 * Convert IEEE channel/MHz to an internal channel value used
1065 * by the AR5210 chipset. This has not been verified with
1066 * newer chipsets like the AR5212A who have a completely
1067 * different RF/PHY part.
1069 athchan
= (ath5k_hw_bitswap(
1070 (ieee80211_frequency_to_channel(
1071 channel
->center_freq
) - 24) / 2, 5)
1072 << 1) | (1 << 6) | 0x1;
1077 * Set channel on RF5110
1079 static int ath5k_hw_rf5110_channel(struct ath5k_hw
*ah
,
1080 struct ieee80211_channel
*channel
)
1085 * Set the channel and wait
1087 data
= ath5k_hw_rf5110_chan2athchan(channel
);
1088 ath5k_hw_reg_write(ah
, data
, AR5K_RF_BUFFER
);
1089 ath5k_hw_reg_write(ah
, 0, AR5K_RF_BUFFER_CONTROL_0
);
1096 * Conversion needed for 5111
1098 static int ath5k_hw_rf5111_chan2athchan(unsigned int ieee
,
1099 struct ath5k_athchan_2ghz
*athchan
)
1103 /* Cast this value to catch negative channel numbers (>= -19) */
1104 channel
= (int)ieee
;
1107 * Map 2GHz IEEE channel to 5GHz Atheros channel
1109 if (channel
<= 13) {
1110 athchan
->a2_athchan
= 115 + channel
;
1111 athchan
->a2_flags
= 0x46;
1112 } else if (channel
== 14) {
1113 athchan
->a2_athchan
= 124;
1114 athchan
->a2_flags
= 0x44;
1115 } else if (channel
>= 15 && channel
<= 26) {
1116 athchan
->a2_athchan
= ((channel
- 14) * 4) + 132;
1117 athchan
->a2_flags
= 0x46;
1125 * Set channel on 5111
1127 static int ath5k_hw_rf5111_channel(struct ath5k_hw
*ah
,
1128 struct ieee80211_channel
*channel
)
1130 struct ath5k_athchan_2ghz ath5k_channel_2ghz
;
1131 unsigned int ath5k_channel
=
1132 ieee80211_frequency_to_channel(channel
->center_freq
);
1133 u32 data0
, data1
, clock
;
1137 * Set the channel on the RF5111 radio
1141 if (channel
->hw_value
& CHANNEL_2GHZ
) {
1142 /* Map 2GHz channel to 5GHz Atheros channel ID */
1143 ret
= ath5k_hw_rf5111_chan2athchan(
1144 ieee80211_frequency_to_channel(channel
->center_freq
),
1145 &ath5k_channel_2ghz
);
1149 ath5k_channel
= ath5k_channel_2ghz
.a2_athchan
;
1150 data0
= ((ath5k_hw_bitswap(ath5k_channel_2ghz
.a2_flags
, 8) & 0xff)
1154 if (ath5k_channel
< 145 || !(ath5k_channel
& 1)) {
1156 data1
= ((ath5k_hw_bitswap(ath5k_channel
- 24, 8) & 0xff) << 2) |
1157 (clock
<< 1) | (1 << 10) | 1;
1160 data1
= ((ath5k_hw_bitswap((ath5k_channel
- 24) / 2, 8) & 0xff)
1161 << 2) | (clock
<< 1) | (1 << 10) | 1;
1164 ath5k_hw_reg_write(ah
, (data1
& 0xff) | ((data0
& 0xff) << 8),
1166 ath5k_hw_reg_write(ah
, ((data1
>> 8) & 0xff) | (data0
& 0xff00),
1167 AR5K_RF_BUFFER_CONTROL_3
);
1173 * Set channel on 5112 and newer
1175 static int ath5k_hw_rf5112_channel(struct ath5k_hw
*ah
,
1176 struct ieee80211_channel
*channel
)
1178 u32 data
, data0
, data1
, data2
;
1181 data
= data0
= data1
= data2
= 0;
1182 c
= channel
->center_freq
;
1185 if (!((c
- 2224) % 5)) {
1186 data0
= ((2 * (c
- 704)) - 3040) / 10;
1188 } else if (!((c
- 2192) % 5)) {
1189 data0
= ((2 * (c
- 672)) - 3040) / 10;
1194 data0
= ath5k_hw_bitswap((data0
<< 2) & 0xff, 8);
1195 } else if ((c
% 5) != 2 || c
> 5435) {
1196 if (!(c
% 20) && c
>= 5120) {
1197 data0
= ath5k_hw_bitswap(((c
- 4800) / 20 << 2), 8);
1198 data2
= ath5k_hw_bitswap(3, 2);
1199 } else if (!(c
% 10)) {
1200 data0
= ath5k_hw_bitswap(((c
- 4800) / 10 << 1), 8);
1201 data2
= ath5k_hw_bitswap(2, 2);
1202 } else if (!(c
% 5)) {
1203 data0
= ath5k_hw_bitswap((c
- 4800) / 5, 8);
1204 data2
= ath5k_hw_bitswap(1, 2);
1208 data0
= ath5k_hw_bitswap((10 * (c
- 2 - 4800)) / 25 + 1, 8);
1209 data2
= ath5k_hw_bitswap(0, 2);
1212 data
= (data0
<< 4) | (data1
<< 1) | (data2
<< 2) | 0x1001;
1214 ath5k_hw_reg_write(ah
, data
& 0xff, AR5K_RF_BUFFER
);
1215 ath5k_hw_reg_write(ah
, (data
>> 8) & 0x7f, AR5K_RF_BUFFER_CONTROL_5
);
1221 * Set the channel on the RF2425
1223 static int ath5k_hw_rf2425_channel(struct ath5k_hw
*ah
,
1224 struct ieee80211_channel
*channel
)
1226 u32 data
, data0
, data2
;
1229 data
= data0
= data2
= 0;
1230 c
= channel
->center_freq
;
1233 data0
= ath5k_hw_bitswap((c
- 2272), 8);
1236 } else if ((c
% 5) != 2 || c
> 5435) {
1237 if (!(c
% 20) && c
< 5120)
1238 data0
= ath5k_hw_bitswap(((c
- 4800) / 20 << 2), 8);
1240 data0
= ath5k_hw_bitswap(((c
- 4800) / 10 << 1), 8);
1242 data0
= ath5k_hw_bitswap((c
- 4800) / 5, 8);
1245 data2
= ath5k_hw_bitswap(1, 2);
1247 data0
= ath5k_hw_bitswap((10 * (c
- 2 - 4800)) / 25 + 1, 8);
1248 data2
= ath5k_hw_bitswap(0, 2);
1251 data
= (data0
<< 4) | data2
<< 2 | 0x1001;
1253 ath5k_hw_reg_write(ah
, data
& 0xff, AR5K_RF_BUFFER
);
1254 ath5k_hw_reg_write(ah
, (data
>> 8) & 0x7f, AR5K_RF_BUFFER_CONTROL_5
);
1260 * Set a channel on the radio chip
1262 static int ath5k_hw_channel(struct ath5k_hw
*ah
,
1263 struct ieee80211_channel
*channel
)
1267 * Check bounds supported by the PHY (we don't care about regulatory
1268 * restrictions at this point). Note: hw_value already has the band
1269 * (CHANNEL_2GHZ, or CHANNEL_5GHZ) so we inform ath5k_channel_ok()
1270 * of the band by that */
1271 if (!ath5k_channel_ok(ah
, channel
->center_freq
, channel
->hw_value
)) {
1273 "channel frequency (%u MHz) out of supported "
1275 channel
->center_freq
);
1280 * Set the channel and wait
1282 switch (ah
->ah_radio
) {
1284 ret
= ath5k_hw_rf5110_channel(ah
, channel
);
1287 ret
= ath5k_hw_rf5111_channel(ah
, channel
);
1291 ret
= ath5k_hw_rf2425_channel(ah
, channel
);
1294 ret
= ath5k_hw_rf5112_channel(ah
, channel
);
1301 /* Set JAPAN setting for channel 14 */
1302 if (channel
->center_freq
== 2484) {
1303 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_CCKTXCTL
,
1304 AR5K_PHY_CCKTXCTL_JAPAN
);
1306 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_CCKTXCTL
,
1307 AR5K_PHY_CCKTXCTL_WORLD
);
1310 ah
->ah_current_channel
= channel
;
1319 static s32
ath5k_hw_read_measured_noise_floor(struct ath5k_hw
*ah
)
1323 val
= ath5k_hw_reg_read(ah
, AR5K_PHY_NF
);
1324 return sign_extend32(AR5K_REG_MS(val
, AR5K_PHY_NF_MINCCA_PWR
), 8);
1327 void ath5k_hw_init_nfcal_hist(struct ath5k_hw
*ah
)
1331 ah
->ah_nfcal_hist
.index
= 0;
1332 for (i
= 0; i
< ATH5K_NF_CAL_HIST_MAX
; i
++)
1333 ah
->ah_nfcal_hist
.nfval
[i
] = AR5K_TUNE_CCA_MAX_GOOD_VALUE
;
1336 static void ath5k_hw_update_nfcal_hist(struct ath5k_hw
*ah
, s16 noise_floor
)
1338 struct ath5k_nfcal_hist
*hist
= &ah
->ah_nfcal_hist
;
1339 hist
->index
= (hist
->index
+ 1) & (ATH5K_NF_CAL_HIST_MAX
- 1);
1340 hist
->nfval
[hist
->index
] = noise_floor
;
1343 static s16
ath5k_hw_get_median_noise_floor(struct ath5k_hw
*ah
)
1345 s16 sort
[ATH5K_NF_CAL_HIST_MAX
];
1349 memcpy(sort
, ah
->ah_nfcal_hist
.nfval
, sizeof(sort
));
1350 for (i
= 0; i
< ATH5K_NF_CAL_HIST_MAX
- 1; i
++) {
1351 for (j
= 1; j
< ATH5K_NF_CAL_HIST_MAX
- i
; j
++) {
1352 if (sort
[j
] > sort
[j
- 1]) {
1354 sort
[j
] = sort
[j
- 1];
1359 for (i
= 0; i
< ATH5K_NF_CAL_HIST_MAX
; i
++) {
1360 ATH5K_DBG(ah
, ATH5K_DEBUG_CALIBRATE
,
1361 "cal %d:%d\n", i
, sort
[i
]);
1363 return sort
[(ATH5K_NF_CAL_HIST_MAX
- 1) / 2];
1367 * When we tell the hardware to perform a noise floor calibration
1368 * by setting the AR5K_PHY_AGCCTL_NF bit, it will periodically
1369 * sample-and-hold the minimum noise level seen at the antennas.
1370 * This value is then stored in a ring buffer of recently measured
1371 * noise floor values so we have a moving window of the last few
1374 * The median of the values in the history is then loaded into the
1375 * hardware for its own use for RSSI and CCA measurements.
1377 void ath5k_hw_update_noise_floor(struct ath5k_hw
*ah
)
1379 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
1384 /* keep last value if calibration hasn't completed */
1385 if (ath5k_hw_reg_read(ah
, AR5K_PHY_AGCCTL
) & AR5K_PHY_AGCCTL_NF
) {
1386 ATH5K_DBG(ah
, ATH5K_DEBUG_CALIBRATE
,
1387 "NF did not complete in calibration window\n");
1392 ee_mode
= ath5k_eeprom_mode_from_channel(ah
->ah_current_channel
);
1394 /* completed NF calibration, test threshold */
1395 nf
= ath5k_hw_read_measured_noise_floor(ah
);
1396 threshold
= ee
->ee_noise_floor_thr
[ee_mode
];
1398 if (nf
> threshold
) {
1399 ATH5K_DBG(ah
, ATH5K_DEBUG_CALIBRATE
,
1400 "noise floor failure detected; "
1401 "read %d, threshold %d\n",
1404 nf
= AR5K_TUNE_CCA_MAX_GOOD_VALUE
;
1407 ath5k_hw_update_nfcal_hist(ah
, nf
);
1408 nf
= ath5k_hw_get_median_noise_floor(ah
);
1410 /* load noise floor (in .5 dBm) so the hardware will use it */
1411 val
= ath5k_hw_reg_read(ah
, AR5K_PHY_NF
) & ~AR5K_PHY_NF_M
;
1412 val
|= (nf
* 2) & AR5K_PHY_NF_M
;
1413 ath5k_hw_reg_write(ah
, val
, AR5K_PHY_NF
);
1415 AR5K_REG_MASKED_BITS(ah
, AR5K_PHY_AGCCTL
, AR5K_PHY_AGCCTL_NF
,
1416 ~(AR5K_PHY_AGCCTL_NF_EN
| AR5K_PHY_AGCCTL_NF_NOUPDATE
));
1418 ath5k_hw_register_timeout(ah
, AR5K_PHY_AGCCTL
, AR5K_PHY_AGCCTL_NF
,
1422 * Load a high max CCA Power value (-50 dBm in .5 dBm units)
1423 * so that we're not capped by the median we just loaded.
1424 * This will be used as the initial value for the next noise
1425 * floor calibration.
1427 val
= (val
& ~AR5K_PHY_NF_M
) | ((-50 * 2) & AR5K_PHY_NF_M
);
1428 ath5k_hw_reg_write(ah
, val
, AR5K_PHY_NF
);
1429 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGCCTL
,
1430 AR5K_PHY_AGCCTL_NF_EN
|
1431 AR5K_PHY_AGCCTL_NF_NOUPDATE
|
1432 AR5K_PHY_AGCCTL_NF
);
1434 ah
->ah_noise_floor
= nf
;
1436 ATH5K_DBG(ah
, ATH5K_DEBUG_CALIBRATE
,
1437 "noise floor calibrated: %d\n", nf
);
1441 * Perform a PHY calibration on RF5110
1442 * -Fix BPSK/QAM Constellation (I/Q correction)
1444 static int ath5k_hw_rf5110_calibrate(struct ath5k_hw
*ah
,
1445 struct ieee80211_channel
*channel
)
1447 u32 phy_sig
, phy_agc
, phy_sat
, beacon
;
1451 * Disable beacons and RX/TX queues, wait
1453 AR5K_REG_ENABLE_BITS(ah
, AR5K_DIAG_SW_5210
,
1454 AR5K_DIAG_SW_DIS_TX_5210
| AR5K_DIAG_SW_DIS_RX_5210
);
1455 beacon
= ath5k_hw_reg_read(ah
, AR5K_BEACON_5210
);
1456 ath5k_hw_reg_write(ah
, beacon
& ~AR5K_BEACON_ENABLE
, AR5K_BEACON_5210
);
1461 * Set the channel (with AGC turned off)
1463 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGC
, AR5K_PHY_AGC_DISABLE
);
1465 ret
= ath5k_hw_channel(ah
, channel
);
1468 * Activate PHY and wait
1470 ath5k_hw_reg_write(ah
, AR5K_PHY_ACT_ENABLE
, AR5K_PHY_ACT
);
1473 AR5K_REG_DISABLE_BITS(ah
, AR5K_PHY_AGC
, AR5K_PHY_AGC_DISABLE
);
1479 * Calibrate the radio chip
1482 /* Remember normal state */
1483 phy_sig
= ath5k_hw_reg_read(ah
, AR5K_PHY_SIG
);
1484 phy_agc
= ath5k_hw_reg_read(ah
, AR5K_PHY_AGCCOARSE
);
1485 phy_sat
= ath5k_hw_reg_read(ah
, AR5K_PHY_ADCSAT
);
1487 /* Update radio registers */
1488 ath5k_hw_reg_write(ah
, (phy_sig
& ~(AR5K_PHY_SIG_FIRPWR
)) |
1489 AR5K_REG_SM(-1, AR5K_PHY_SIG_FIRPWR
), AR5K_PHY_SIG
);
1491 ath5k_hw_reg_write(ah
, (phy_agc
& ~(AR5K_PHY_AGCCOARSE_HI
|
1492 AR5K_PHY_AGCCOARSE_LO
)) |
1493 AR5K_REG_SM(-1, AR5K_PHY_AGCCOARSE_HI
) |
1494 AR5K_REG_SM(-127, AR5K_PHY_AGCCOARSE_LO
), AR5K_PHY_AGCCOARSE
);
1496 ath5k_hw_reg_write(ah
, (phy_sat
& ~(AR5K_PHY_ADCSAT_ICNT
|
1497 AR5K_PHY_ADCSAT_THR
)) |
1498 AR5K_REG_SM(2, AR5K_PHY_ADCSAT_ICNT
) |
1499 AR5K_REG_SM(12, AR5K_PHY_ADCSAT_THR
), AR5K_PHY_ADCSAT
);
1503 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGC
, AR5K_PHY_AGC_DISABLE
);
1505 ath5k_hw_reg_write(ah
, AR5K_PHY_RFSTG_DISABLE
, AR5K_PHY_RFSTG
);
1506 AR5K_REG_DISABLE_BITS(ah
, AR5K_PHY_AGC
, AR5K_PHY_AGC_DISABLE
);
1511 * Enable calibration and wait until completion
1513 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGCCTL
, AR5K_PHY_AGCCTL_CAL
);
1515 ret
= ath5k_hw_register_timeout(ah
, AR5K_PHY_AGCCTL
,
1516 AR5K_PHY_AGCCTL_CAL
, 0, false);
1518 /* Reset to normal state */
1519 ath5k_hw_reg_write(ah
, phy_sig
, AR5K_PHY_SIG
);
1520 ath5k_hw_reg_write(ah
, phy_agc
, AR5K_PHY_AGCCOARSE
);
1521 ath5k_hw_reg_write(ah
, phy_sat
, AR5K_PHY_ADCSAT
);
1524 ATH5K_ERR(ah
, "calibration timeout (%uMHz)\n",
1525 channel
->center_freq
);
1530 * Re-enable RX/TX and beacons
1532 AR5K_REG_DISABLE_BITS(ah
, AR5K_DIAG_SW_5210
,
1533 AR5K_DIAG_SW_DIS_TX_5210
| AR5K_DIAG_SW_DIS_RX_5210
);
1534 ath5k_hw_reg_write(ah
, beacon
, AR5K_BEACON_5210
);
1540 * Perform I/Q calibration on RF5111/5112 and newer chips
1543 ath5k_hw_rf511x_iq_calibrate(struct ath5k_hw
*ah
)
1546 s32 iq_corr
, i_coff
, i_coffd
, q_coff
, q_coffd
;
1549 if (!ah
->ah_calibration
||
1550 ath5k_hw_reg_read(ah
, AR5K_PHY_IQ
) & AR5K_PHY_IQ_RUN
)
1553 /* Calibration has finished, get the results and re-run */
1554 /* work around empty results which can apparently happen on 5212 */
1555 for (i
= 0; i
<= 10; i
++) {
1556 iq_corr
= ath5k_hw_reg_read(ah
, AR5K_PHY_IQRES_CAL_CORR
);
1557 i_pwr
= ath5k_hw_reg_read(ah
, AR5K_PHY_IQRES_CAL_PWR_I
);
1558 q_pwr
= ath5k_hw_reg_read(ah
, AR5K_PHY_IQRES_CAL_PWR_Q
);
1559 ATH5K_DBG_UNLIMIT(ah
, ATH5K_DEBUG_CALIBRATE
,
1560 "iq_corr:%x i_pwr:%x q_pwr:%x", iq_corr
, i_pwr
, q_pwr
);
1565 i_coffd
= ((i_pwr
>> 1) + (q_pwr
>> 1)) >> 7;
1567 if (ah
->ah_version
== AR5K_AR5211
)
1568 q_coffd
= q_pwr
>> 6;
1570 q_coffd
= q_pwr
>> 7;
1572 /* protect against divide by 0 and loss of sign bits */
1573 if (i_coffd
== 0 || q_coffd
< 2)
1576 i_coff
= (-iq_corr
) / i_coffd
;
1577 i_coff
= clamp(i_coff
, -32, 31); /* signed 6 bit */
1579 if (ah
->ah_version
== AR5K_AR5211
)
1580 q_coff
= (i_pwr
/ q_coffd
) - 64;
1582 q_coff
= (i_pwr
/ q_coffd
) - 128;
1583 q_coff
= clamp(q_coff
, -16, 15); /* signed 5 bit */
1585 ATH5K_DBG_UNLIMIT(ah
, ATH5K_DEBUG_CALIBRATE
,
1586 "new I:%d Q:%d (i_coffd:%x q_coffd:%x)",
1587 i_coff
, q_coff
, i_coffd
, q_coffd
);
1589 /* Commit new I/Q values (set enable bit last to match HAL sources) */
1590 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_IQ
, AR5K_PHY_IQ_CORR_Q_I_COFF
, i_coff
);
1591 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_IQ
, AR5K_PHY_IQ_CORR_Q_Q_COFF
, q_coff
);
1592 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_IQ
, AR5K_PHY_IQ_CORR_ENABLE
);
1594 /* Re-enable calibration -if we don't we'll commit
1595 * the same values again and again */
1596 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_IQ
,
1597 AR5K_PHY_IQ_CAL_NUM_LOG_MAX
, 15);
1598 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_IQ
, AR5K_PHY_IQ_RUN
);
1604 * Perform a PHY calibration
1606 int ath5k_hw_phy_calibrate(struct ath5k_hw
*ah
,
1607 struct ieee80211_channel
*channel
)
1611 if (ah
->ah_radio
== AR5K_RF5110
)
1612 return ath5k_hw_rf5110_calibrate(ah
, channel
);
1614 ret
= ath5k_hw_rf511x_iq_calibrate(ah
);
1616 if ((ah
->ah_radio
== AR5K_RF5111
|| ah
->ah_radio
== AR5K_RF5112
) &&
1617 (channel
->hw_value
& CHANNEL_OFDM
))
1618 ath5k_hw_request_rfgain_probe(ah
);
1624 /***************************\
1625 * Spur mitigation functions *
1626 \***************************/
1629 ath5k_hw_set_spur_mitigation_filter(struct ath5k_hw
*ah
,
1630 struct ieee80211_channel
*channel
)
1632 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
1633 u32 mag_mask
[4] = {0, 0, 0, 0};
1634 u32 pilot_mask
[2] = {0, 0};
1635 /* Note: fbin values are scaled up by 2 */
1636 u16 spur_chan_fbin
, chan_fbin
, symbol_width
, spur_detection_window
;
1637 s32 spur_delta_phase
, spur_freq_sigma_delta
;
1638 s32 spur_offset
, num_symbols_x16
;
1639 u8 num_symbol_offsets
, i
, freq_band
;
1641 /* Convert current frequency to fbin value (the same way channels
1642 * are stored on EEPROM, check out ath5k_eeprom_bin2freq) and scale
1643 * up by 2 so we can compare it later */
1644 if (channel
->hw_value
& CHANNEL_2GHZ
) {
1645 chan_fbin
= (channel
->center_freq
- 2300) * 10;
1646 freq_band
= AR5K_EEPROM_BAND_2GHZ
;
1648 chan_fbin
= (channel
->center_freq
- 4900) * 10;
1649 freq_band
= AR5K_EEPROM_BAND_5GHZ
;
1652 /* Check if any spur_chan_fbin from EEPROM is
1653 * within our current channel's spur detection range */
1654 spur_chan_fbin
= AR5K_EEPROM_NO_SPUR
;
1655 spur_detection_window
= AR5K_SPUR_CHAN_WIDTH
;
1656 /* XXX: Half/Quarter channels ?*/
1657 if (ah
->ah_bwmode
== AR5K_BWMODE_40MHZ
)
1658 spur_detection_window
*= 2;
1660 for (i
= 0; i
< AR5K_EEPROM_N_SPUR_CHANS
; i
++) {
1661 spur_chan_fbin
= ee
->ee_spur_chans
[i
][freq_band
];
1663 /* Note: mask cleans AR5K_EEPROM_NO_SPUR flag
1664 * so it's zero if we got nothing from EEPROM */
1665 if (spur_chan_fbin
== AR5K_EEPROM_NO_SPUR
) {
1666 spur_chan_fbin
&= AR5K_EEPROM_SPUR_CHAN_MASK
;
1670 if ((chan_fbin
- spur_detection_window
<=
1671 (spur_chan_fbin
& AR5K_EEPROM_SPUR_CHAN_MASK
)) &&
1672 (chan_fbin
+ spur_detection_window
>=
1673 (spur_chan_fbin
& AR5K_EEPROM_SPUR_CHAN_MASK
))) {
1674 spur_chan_fbin
&= AR5K_EEPROM_SPUR_CHAN_MASK
;
1679 /* We need to enable spur filter for this channel */
1680 if (spur_chan_fbin
) {
1681 spur_offset
= spur_chan_fbin
- chan_fbin
;
1684 * spur_freq_sigma_delta -> spur_offset / sample_freq << 21
1685 * spur_delta_phase -> spur_offset / chip_freq << 11
1686 * Note: Both values have 100Hz resolution
1688 switch (ah
->ah_bwmode
) {
1689 case AR5K_BWMODE_40MHZ
:
1690 /* Both sample_freq and chip_freq are 80MHz */
1691 spur_delta_phase
= (spur_offset
<< 16) / 25;
1692 spur_freq_sigma_delta
= (spur_delta_phase
>> 10);
1693 symbol_width
= AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz
* 2;
1695 case AR5K_BWMODE_10MHZ
:
1696 /* Both sample_freq and chip_freq are 20MHz (?) */
1697 spur_delta_phase
= (spur_offset
<< 18) / 25;
1698 spur_freq_sigma_delta
= (spur_delta_phase
>> 10);
1699 symbol_width
= AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz
/ 2;
1700 case AR5K_BWMODE_5MHZ
:
1701 /* Both sample_freq and chip_freq are 10MHz (?) */
1702 spur_delta_phase
= (spur_offset
<< 19) / 25;
1703 spur_freq_sigma_delta
= (spur_delta_phase
>> 10);
1704 symbol_width
= AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz
/ 4;
1706 if (channel
->hw_value
== CHANNEL_A
) {
1707 /* Both sample_freq and chip_freq are 40MHz */
1708 spur_delta_phase
= (spur_offset
<< 17) / 25;
1709 spur_freq_sigma_delta
=
1710 (spur_delta_phase
>> 10);
1712 AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz
;
1714 /* sample_freq -> 40MHz chip_freq -> 44MHz
1715 * (for b compatibility) */
1716 spur_delta_phase
= (spur_offset
<< 17) / 25;
1717 spur_freq_sigma_delta
=
1718 (spur_offset
<< 8) / 55;
1720 AR5K_SPUR_SYMBOL_WIDTH_BASE_100Hz
;
1725 /* Calculate pilot and magnitude masks */
1727 /* Scale up spur_offset by 1000 to switch to 100HZ resolution
1728 * and divide by symbol_width to find how many symbols we have
1729 * Note: number of symbols is scaled up by 16 */
1730 num_symbols_x16
= ((spur_offset
* 1000) << 4) / symbol_width
;
1732 /* Spur is on a symbol if num_symbols_x16 % 16 is zero */
1733 if (!(num_symbols_x16
& 0xF))
1735 num_symbol_offsets
= 3;
1738 num_symbol_offsets
= 4;
1740 for (i
= 0; i
< num_symbol_offsets
; i
++) {
1742 /* Calculate pilot mask */
1744 (num_symbols_x16
/ 16) + i
+ 25;
1746 /* Pilot magnitude mask seems to be a way to
1747 * declare the boundaries for our detection
1748 * window or something, it's 2 for the middle
1749 * value(s) where the symbol is expected to be
1750 * and 1 on the boundary values */
1752 (i
== 0 || i
== (num_symbol_offsets
- 1))
1755 if (curr_sym_off
>= 0 && curr_sym_off
<= 32) {
1756 if (curr_sym_off
<= 25)
1757 pilot_mask
[0] |= 1 << curr_sym_off
;
1758 else if (curr_sym_off
>= 27)
1759 pilot_mask
[0] |= 1 << (curr_sym_off
- 1);
1760 } else if (curr_sym_off
>= 33 && curr_sym_off
<= 52)
1761 pilot_mask
[1] |= 1 << (curr_sym_off
- 33);
1763 /* Calculate magnitude mask (for viterbi decoder) */
1764 if (curr_sym_off
>= -1 && curr_sym_off
<= 14)
1766 plt_mag_map
<< (curr_sym_off
+ 1) * 2;
1767 else if (curr_sym_off
>= 15 && curr_sym_off
<= 30)
1769 plt_mag_map
<< (curr_sym_off
- 15) * 2;
1770 else if (curr_sym_off
>= 31 && curr_sym_off
<= 46)
1772 plt_mag_map
<< (curr_sym_off
- 31) * 2;
1773 else if (curr_sym_off
>= 47 && curr_sym_off
<= 53)
1775 plt_mag_map
<< (curr_sym_off
- 47) * 2;
1779 /* Write settings on hw to enable spur filter */
1780 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_BIN_MASK_CTL
,
1781 AR5K_PHY_BIN_MASK_CTL_RATE
, 0xff);
1782 /* XXX: Self correlator also ? */
1783 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_IQ
,
1784 AR5K_PHY_IQ_PILOT_MASK_EN
|
1785 AR5K_PHY_IQ_CHAN_MASK_EN
|
1786 AR5K_PHY_IQ_SPUR_FILT_EN
);
1788 /* Set delta phase and freq sigma delta */
1789 ath5k_hw_reg_write(ah
,
1790 AR5K_REG_SM(spur_delta_phase
,
1791 AR5K_PHY_TIMING_11_SPUR_DELTA_PHASE
) |
1792 AR5K_REG_SM(spur_freq_sigma_delta
,
1793 AR5K_PHY_TIMING_11_SPUR_FREQ_SD
) |
1794 AR5K_PHY_TIMING_11_USE_SPUR_IN_AGC
,
1795 AR5K_PHY_TIMING_11
);
1797 /* Write pilot masks */
1798 ath5k_hw_reg_write(ah
, pilot_mask
[0], AR5K_PHY_TIMING_7
);
1799 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_TIMING_8
,
1800 AR5K_PHY_TIMING_8_PILOT_MASK_2
,
1803 ath5k_hw_reg_write(ah
, pilot_mask
[0], AR5K_PHY_TIMING_9
);
1804 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_TIMING_10
,
1805 AR5K_PHY_TIMING_10_PILOT_MASK_2
,
1808 /* Write magnitude masks */
1809 ath5k_hw_reg_write(ah
, mag_mask
[0], AR5K_PHY_BIN_MASK_1
);
1810 ath5k_hw_reg_write(ah
, mag_mask
[1], AR5K_PHY_BIN_MASK_2
);
1811 ath5k_hw_reg_write(ah
, mag_mask
[2], AR5K_PHY_BIN_MASK_3
);
1812 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_BIN_MASK_CTL
,
1813 AR5K_PHY_BIN_MASK_CTL_MASK_4
,
1816 ath5k_hw_reg_write(ah
, mag_mask
[0], AR5K_PHY_BIN_MASK2_1
);
1817 ath5k_hw_reg_write(ah
, mag_mask
[1], AR5K_PHY_BIN_MASK2_2
);
1818 ath5k_hw_reg_write(ah
, mag_mask
[2], AR5K_PHY_BIN_MASK2_3
);
1819 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_BIN_MASK2_4
,
1820 AR5K_PHY_BIN_MASK2_4_MASK_4
,
1823 } else if (ath5k_hw_reg_read(ah
, AR5K_PHY_IQ
) &
1824 AR5K_PHY_IQ_SPUR_FILT_EN
) {
1825 /* Clean up spur mitigation settings and disable filter */
1826 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_BIN_MASK_CTL
,
1827 AR5K_PHY_BIN_MASK_CTL_RATE
, 0);
1828 AR5K_REG_DISABLE_BITS(ah
, AR5K_PHY_IQ
,
1829 AR5K_PHY_IQ_PILOT_MASK_EN
|
1830 AR5K_PHY_IQ_CHAN_MASK_EN
|
1831 AR5K_PHY_IQ_SPUR_FILT_EN
);
1832 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_TIMING_11
);
1834 /* Clear pilot masks */
1835 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_TIMING_7
);
1836 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_TIMING_8
,
1837 AR5K_PHY_TIMING_8_PILOT_MASK_2
,
1840 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_TIMING_9
);
1841 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_TIMING_10
,
1842 AR5K_PHY_TIMING_10_PILOT_MASK_2
,
1845 /* Clear magnitude masks */
1846 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_BIN_MASK_1
);
1847 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_BIN_MASK_2
);
1848 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_BIN_MASK_3
);
1849 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_BIN_MASK_CTL
,
1850 AR5K_PHY_BIN_MASK_CTL_MASK_4
,
1853 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_BIN_MASK2_1
);
1854 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_BIN_MASK2_2
);
1855 ath5k_hw_reg_write(ah
, 0, AR5K_PHY_BIN_MASK2_3
);
1856 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_BIN_MASK2_4
,
1857 AR5K_PHY_BIN_MASK2_4_MASK_4
,
1867 static void /*TODO:Boundary check*/
1868 ath5k_hw_set_def_antenna(struct ath5k_hw
*ah
, u8 ant
)
1870 if (ah
->ah_version
!= AR5K_AR5210
)
1871 ath5k_hw_reg_write(ah
, ant
& 0x7, AR5K_DEFAULT_ANTENNA
);
1875 * Enable/disable fast rx antenna diversity
1878 ath5k_hw_set_fast_div(struct ath5k_hw
*ah
, u8 ee_mode
, bool enable
)
1881 case AR5K_EEPROM_MODE_11G
:
1882 /* XXX: This is set to
1883 * disabled on initvals !!! */
1884 case AR5K_EEPROM_MODE_11A
:
1886 AR5K_REG_DISABLE_BITS(ah
, AR5K_PHY_AGCCTL
,
1887 AR5K_PHY_AGCCTL_OFDM_DIV_DIS
);
1889 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGCCTL
,
1890 AR5K_PHY_AGCCTL_OFDM_DIV_DIS
);
1892 case AR5K_EEPROM_MODE_11B
:
1893 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGCCTL
,
1894 AR5K_PHY_AGCCTL_OFDM_DIV_DIS
);
1901 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_RESTART
,
1902 AR5K_PHY_RESTART_DIV_GC
, 4);
1904 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_FAST_ANT_DIV
,
1905 AR5K_PHY_FAST_ANT_DIV_EN
);
1907 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_RESTART
,
1908 AR5K_PHY_RESTART_DIV_GC
, 0);
1910 AR5K_REG_DISABLE_BITS(ah
, AR5K_PHY_FAST_ANT_DIV
,
1911 AR5K_PHY_FAST_ANT_DIV_EN
);
1916 ath5k_hw_set_antenna_switch(struct ath5k_hw
*ah
, u8 ee_mode
)
1921 * In case a fixed antenna was set as default
1922 * use the same switch table twice.
1924 if (ah
->ah_ant_mode
== AR5K_ANTMODE_FIXED_A
)
1925 ant0
= ant1
= AR5K_ANT_SWTABLE_A
;
1926 else if (ah
->ah_ant_mode
== AR5K_ANTMODE_FIXED_B
)
1927 ant0
= ant1
= AR5K_ANT_SWTABLE_B
;
1929 ant0
= AR5K_ANT_SWTABLE_A
;
1930 ant1
= AR5K_ANT_SWTABLE_B
;
1933 /* Set antenna idle switch table */
1934 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_ANT_CTL
,
1935 AR5K_PHY_ANT_CTL_SWTABLE_IDLE
,
1936 (ah
->ah_ant_ctl
[ee_mode
][AR5K_ANT_CTL
] |
1937 AR5K_PHY_ANT_CTL_TXRX_EN
));
1939 /* Set antenna switch tables */
1940 ath5k_hw_reg_write(ah
, ah
->ah_ant_ctl
[ee_mode
][ant0
],
1941 AR5K_PHY_ANT_SWITCH_TABLE_0
);
1942 ath5k_hw_reg_write(ah
, ah
->ah_ant_ctl
[ee_mode
][ant1
],
1943 AR5K_PHY_ANT_SWITCH_TABLE_1
);
1947 * Set antenna operating mode
1950 ath5k_hw_set_antenna_mode(struct ath5k_hw
*ah
, u8 ant_mode
)
1952 struct ieee80211_channel
*channel
= ah
->ah_current_channel
;
1953 bool use_def_for_tx
, update_def_on_tx
, use_def_for_rts
, fast_div
;
1954 bool use_def_for_sg
;
1959 /* if channel is not initialized yet we can't set the antennas
1960 * so just store the mode. it will be set on the next reset */
1961 if (channel
== NULL
) {
1962 ah
->ah_ant_mode
= ant_mode
;
1966 def_ant
= ah
->ah_def_ant
;
1968 ee_mode
= ath5k_eeprom_mode_from_channel(channel
);
1971 "invalid channel: %d\n", channel
->center_freq
);
1976 case AR5K_ANTMODE_DEFAULT
:
1978 use_def_for_tx
= false;
1979 update_def_on_tx
= false;
1980 use_def_for_rts
= false;
1981 use_def_for_sg
= false;
1984 case AR5K_ANTMODE_FIXED_A
:
1987 use_def_for_tx
= true;
1988 update_def_on_tx
= false;
1989 use_def_for_rts
= true;
1990 use_def_for_sg
= true;
1993 case AR5K_ANTMODE_FIXED_B
:
1996 use_def_for_tx
= true;
1997 update_def_on_tx
= false;
1998 use_def_for_rts
= true;
1999 use_def_for_sg
= true;
2002 case AR5K_ANTMODE_SINGLE_AP
:
2003 def_ant
= 1; /* updated on tx */
2005 use_def_for_tx
= true;
2006 update_def_on_tx
= true;
2007 use_def_for_rts
= true;
2008 use_def_for_sg
= true;
2011 case AR5K_ANTMODE_SECTOR_AP
:
2012 tx_ant
= 1; /* variable */
2013 use_def_for_tx
= false;
2014 update_def_on_tx
= false;
2015 use_def_for_rts
= true;
2016 use_def_for_sg
= false;
2019 case AR5K_ANTMODE_SECTOR_STA
:
2020 tx_ant
= 1; /* variable */
2021 use_def_for_tx
= true;
2022 update_def_on_tx
= false;
2023 use_def_for_rts
= true;
2024 use_def_for_sg
= false;
2027 case AR5K_ANTMODE_DEBUG
:
2030 use_def_for_tx
= false;
2031 update_def_on_tx
= false;
2032 use_def_for_rts
= false;
2033 use_def_for_sg
= false;
2040 ah
->ah_tx_ant
= tx_ant
;
2041 ah
->ah_ant_mode
= ant_mode
;
2042 ah
->ah_def_ant
= def_ant
;
2044 sta_id1
|= use_def_for_tx
? AR5K_STA_ID1_DEFAULT_ANTENNA
: 0;
2045 sta_id1
|= update_def_on_tx
? AR5K_STA_ID1_DESC_ANTENNA
: 0;
2046 sta_id1
|= use_def_for_rts
? AR5K_STA_ID1_RTS_DEF_ANTENNA
: 0;
2047 sta_id1
|= use_def_for_sg
? AR5K_STA_ID1_SELFGEN_DEF_ANT
: 0;
2049 AR5K_REG_DISABLE_BITS(ah
, AR5K_STA_ID1
, AR5K_STA_ID1_ANTENNA_SETTINGS
);
2052 AR5K_REG_ENABLE_BITS(ah
, AR5K_STA_ID1
, sta_id1
);
2054 ath5k_hw_set_antenna_switch(ah
, ee_mode
);
2055 /* Note: set diversity before default antenna
2056 * because it won't work correctly */
2057 ath5k_hw_set_fast_div(ah
, ee_mode
, fast_div
);
2058 ath5k_hw_set_def_antenna(ah
, def_ant
);
2071 * Do linear interpolation between two given (x, y) points
2074 ath5k_get_interpolated_value(s16 target
, s16 x_left
, s16 x_right
,
2075 s16 y_left
, s16 y_right
)
2079 /* Avoid divide by zero and skip interpolation
2080 * if we have the same point */
2081 if ((x_left
== x_right
) || (y_left
== y_right
))
2085 * Since we use ints and not fps, we need to scale up in
2086 * order to get a sane ratio value (or else we 'll eg. get
2087 * always 1 instead of 1.25, 1.75 etc). We scale up by 100
2088 * to have some accuracy both for 0.5 and 0.25 steps.
2090 ratio
= ((100 * y_right
- 100 * y_left
) / (x_right
- x_left
));
2092 /* Now scale down to be in range */
2093 result
= y_left
+ (ratio
* (target
- x_left
) / 100);
2099 * Find vertical boundary (min pwr) for the linear PCDAC curve.
2101 * Since we have the top of the curve and we draw the line below
2102 * until we reach 1 (1 pcdac step) we need to know which point
2103 * (x value) that is so that we don't go below y axis and have negative
2104 * pcdac values when creating the curve, or fill the table with zeroes.
2107 ath5k_get_linear_pcdac_min(const u8
*stepL
, const u8
*stepR
,
2108 const s16
*pwrL
, const s16
*pwrR
)
2111 s16 min_pwrL
, min_pwrR
;
2114 /* Some vendors write the same pcdac value twice !!! */
2115 if (stepL
[0] == stepL
[1] || stepR
[0] == stepR
[1])
2116 return max(pwrL
[0], pwrR
[0]);
2118 if (pwrL
[0] == pwrL
[1])
2124 tmp
= (s8
) ath5k_get_interpolated_value(pwr_i
,
2126 stepL
[0], stepL
[1]);
2132 if (pwrR
[0] == pwrR
[1])
2138 tmp
= (s8
) ath5k_get_interpolated_value(pwr_i
,
2140 stepR
[0], stepR
[1]);
2146 /* Keep the right boundary so that it works for both curves */
2147 return max(min_pwrL
, min_pwrR
);
2151 * Interpolate (pwr,vpd) points to create a Power to PDADC or a
2152 * Power to PCDAC curve.
2154 * Each curve has power on x axis (in 0.5dB units) and PCDAC/PDADC
2155 * steps (offsets) on y axis. Power can go up to 31.5dB and max
2156 * PCDAC/PDADC step for each curve is 64 but we can write more than
2157 * one curves on hw so we can go up to 128 (which is the max step we
2158 * can write on the final table).
2160 * We write y values (PCDAC/PDADC steps) on hw.
2163 ath5k_create_power_curve(s16 pmin
, s16 pmax
,
2164 const s16
*pwr
, const u8
*vpd
,
2166 u8
*vpd_table
, u8 type
)
2168 u8 idx
[2] = { 0, 1 };
2169 s16 pwr_i
= 2 * pmin
;
2175 /* We want the whole line, so adjust boundaries
2176 * to cover the entire power range. Note that
2177 * power values are already 0.25dB so no need
2178 * to multiply pwr_i by 2 */
2179 if (type
== AR5K_PWRTABLE_LINEAR_PCDAC
) {
2185 /* Find surrounding turning points (TPs)
2186 * and interpolate between them */
2187 for (i
= 0; (i
<= (u16
) (pmax
- pmin
)) &&
2188 (i
< AR5K_EEPROM_POWER_TABLE_SIZE
); i
++) {
2190 /* We passed the right TP, move to the next set of TPs
2191 * if we pass the last TP, extrapolate above using the last
2192 * two TPs for ratio */
2193 if ((pwr_i
> pwr
[idx
[1]]) && (idx
[1] < num_points
- 1)) {
2198 vpd_table
[i
] = (u8
) ath5k_get_interpolated_value(pwr_i
,
2199 pwr
[idx
[0]], pwr
[idx
[1]],
2200 vpd
[idx
[0]], vpd
[idx
[1]]);
2202 /* Increase by 0.5dB
2203 * (0.25 dB units) */
2209 * Get the surrounding per-channel power calibration piers
2210 * for a given frequency so that we can interpolate between
2211 * them and come up with an appropriate dataset for our current
2215 ath5k_get_chan_pcal_surrounding_piers(struct ath5k_hw
*ah
,
2216 struct ieee80211_channel
*channel
,
2217 struct ath5k_chan_pcal_info
**pcinfo_l
,
2218 struct ath5k_chan_pcal_info
**pcinfo_r
)
2220 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
2221 struct ath5k_chan_pcal_info
*pcinfo
;
2224 u32 target
= channel
->center_freq
;
2229 if (!(channel
->hw_value
& CHANNEL_OFDM
)) {
2230 pcinfo
= ee
->ee_pwr_cal_b
;
2231 mode
= AR5K_EEPROM_MODE_11B
;
2232 } else if (channel
->hw_value
& CHANNEL_2GHZ
) {
2233 pcinfo
= ee
->ee_pwr_cal_g
;
2234 mode
= AR5K_EEPROM_MODE_11G
;
2236 pcinfo
= ee
->ee_pwr_cal_a
;
2237 mode
= AR5K_EEPROM_MODE_11A
;
2239 max
= ee
->ee_n_piers
[mode
] - 1;
2241 /* Frequency is below our calibrated
2242 * range. Use the lowest power curve
2244 if (target
< pcinfo
[0].freq
) {
2249 /* Frequency is above our calibrated
2250 * range. Use the highest power curve
2252 if (target
> pcinfo
[max
].freq
) {
2253 idx_l
= idx_r
= max
;
2257 /* Frequency is inside our calibrated
2258 * channel range. Pick the surrounding
2259 * calibration piers so that we can
2261 for (i
= 0; i
<= max
; i
++) {
2263 /* Frequency matches one of our calibration
2264 * piers, no need to interpolate, just use
2265 * that calibration pier */
2266 if (pcinfo
[i
].freq
== target
) {
2271 /* We found a calibration pier that's above
2272 * frequency, use this pier and the previous
2273 * one to interpolate */
2274 if (target
< pcinfo
[i
].freq
) {
2282 *pcinfo_l
= &pcinfo
[idx_l
];
2283 *pcinfo_r
= &pcinfo
[idx_r
];
2287 * Get the surrounding per-rate power calibration data
2288 * for a given frequency and interpolate between power
2289 * values to set max target power supported by hw for
2293 ath5k_get_rate_pcal_data(struct ath5k_hw
*ah
,
2294 struct ieee80211_channel
*channel
,
2295 struct ath5k_rate_pcal_info
*rates
)
2297 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
2298 struct ath5k_rate_pcal_info
*rpinfo
;
2301 u32 target
= channel
->center_freq
;
2306 if (!(channel
->hw_value
& CHANNEL_OFDM
)) {
2307 rpinfo
= ee
->ee_rate_tpwr_b
;
2308 mode
= AR5K_EEPROM_MODE_11B
;
2309 } else if (channel
->hw_value
& CHANNEL_2GHZ
) {
2310 rpinfo
= ee
->ee_rate_tpwr_g
;
2311 mode
= AR5K_EEPROM_MODE_11G
;
2313 rpinfo
= ee
->ee_rate_tpwr_a
;
2314 mode
= AR5K_EEPROM_MODE_11A
;
2316 max
= ee
->ee_rate_target_pwr_num
[mode
] - 1;
2318 /* Get the surrounding calibration
2319 * piers - same as above */
2320 if (target
< rpinfo
[0].freq
) {
2325 if (target
> rpinfo
[max
].freq
) {
2326 idx_l
= idx_r
= max
;
2330 for (i
= 0; i
<= max
; i
++) {
2332 if (rpinfo
[i
].freq
== target
) {
2337 if (target
< rpinfo
[i
].freq
) {
2345 /* Now interpolate power value, based on the frequency */
2346 rates
->freq
= target
;
2348 rates
->target_power_6to24
=
2349 ath5k_get_interpolated_value(target
, rpinfo
[idx_l
].freq
,
2351 rpinfo
[idx_l
].target_power_6to24
,
2352 rpinfo
[idx_r
].target_power_6to24
);
2354 rates
->target_power_36
=
2355 ath5k_get_interpolated_value(target
, rpinfo
[idx_l
].freq
,
2357 rpinfo
[idx_l
].target_power_36
,
2358 rpinfo
[idx_r
].target_power_36
);
2360 rates
->target_power_48
=
2361 ath5k_get_interpolated_value(target
, rpinfo
[idx_l
].freq
,
2363 rpinfo
[idx_l
].target_power_48
,
2364 rpinfo
[idx_r
].target_power_48
);
2366 rates
->target_power_54
=
2367 ath5k_get_interpolated_value(target
, rpinfo
[idx_l
].freq
,
2369 rpinfo
[idx_l
].target_power_54
,
2370 rpinfo
[idx_r
].target_power_54
);
2374 * Get the max edge power for this channel if
2375 * we have such data from EEPROM's Conformance Test
2376 * Limits (CTL), and limit max power if needed.
2379 ath5k_get_max_ctl_power(struct ath5k_hw
*ah
,
2380 struct ieee80211_channel
*channel
)
2382 struct ath_regulatory
*regulatory
= ath5k_hw_regulatory(ah
);
2383 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
2384 struct ath5k_edge_power
*rep
= ee
->ee_ctl_pwr
;
2385 u8
*ctl_val
= ee
->ee_ctl
;
2386 s16 max_chan_pwr
= ah
->ah_txpower
.txp_max_pwr
/ 4;
2391 u32 target
= channel
->center_freq
;
2393 ctl_mode
= ath_regd_get_band_ctl(regulatory
, channel
->band
);
2395 switch (channel
->hw_value
& CHANNEL_MODES
) {
2397 if (ah
->ah_bwmode
== AR5K_BWMODE_40MHZ
)
2398 ctl_mode
|= AR5K_CTL_TURBO
;
2400 ctl_mode
|= AR5K_CTL_11A
;
2403 if (ah
->ah_bwmode
== AR5K_BWMODE_40MHZ
)
2404 ctl_mode
|= AR5K_CTL_TURBOG
;
2406 ctl_mode
|= AR5K_CTL_11G
;
2409 ctl_mode
|= AR5K_CTL_11B
;
2417 for (i
= 0; i
< ee
->ee_ctls
; i
++) {
2418 if (ctl_val
[i
] == ctl_mode
) {
2424 /* If we have a CTL dataset available grab it and find the
2425 * edge power for our frequency */
2426 if (ctl_idx
== 0xFF)
2429 /* Edge powers are sorted by frequency from lower
2430 * to higher. Each CTL corresponds to 8 edge power
2432 rep_idx
= ctl_idx
* AR5K_EEPROM_N_EDGES
;
2434 /* Don't do boundaries check because we
2435 * might have more that one bands defined
2438 /* Get the edge power that's closer to our
2440 for (i
= 0; i
< AR5K_EEPROM_N_EDGES
; i
++) {
2442 if (target
<= rep
[rep_idx
].freq
)
2443 edge_pwr
= (s16
) rep
[rep_idx
].edge
;
2447 ah
->ah_txpower
.txp_max_pwr
= 4 * min(edge_pwr
, max_chan_pwr
);
2452 * Power to PCDAC table functions
2456 * Fill Power to PCDAC table on RF5111
2458 * No further processing is needed for RF5111, the only thing we have to
2459 * do is fill the values below and above calibration range since eeprom data
2460 * may not cover the entire PCDAC table.
2463 ath5k_fill_pwr_to_pcdac_table(struct ath5k_hw
*ah
, s16
* table_min
,
2466 u8
*pcdac_out
= ah
->ah_txpower
.txp_pd_table
;
2467 u8
*pcdac_tmp
= ah
->ah_txpower
.tmpL
[0];
2468 u8 pcdac_0
, pcdac_n
, pcdac_i
, pwr_idx
, i
;
2469 s16 min_pwr
, max_pwr
;
2471 /* Get table boundaries */
2472 min_pwr
= table_min
[0];
2473 pcdac_0
= pcdac_tmp
[0];
2475 max_pwr
= table_max
[0];
2476 pcdac_n
= pcdac_tmp
[table_max
[0] - table_min
[0]];
2478 /* Extrapolate below minimum using pcdac_0 */
2480 for (i
= 0; i
< min_pwr
; i
++)
2481 pcdac_out
[pcdac_i
++] = pcdac_0
;
2483 /* Copy values from pcdac_tmp */
2485 for (i
= 0; pwr_idx
<= max_pwr
&&
2486 pcdac_i
< AR5K_EEPROM_POWER_TABLE_SIZE
; i
++) {
2487 pcdac_out
[pcdac_i
++] = pcdac_tmp
[i
];
2491 /* Extrapolate above maximum */
2492 while (pcdac_i
< AR5K_EEPROM_POWER_TABLE_SIZE
)
2493 pcdac_out
[pcdac_i
++] = pcdac_n
;
2498 * Combine available XPD Curves and fill Linear Power to PCDAC table
2501 * RFX112 can have up to 2 curves (one for low txpower range and one for
2502 * higher txpower range). We need to put them both on pcdac_out and place
2503 * them in the correct location. In case we only have one curve available
2504 * just fit it on pcdac_out (it's supposed to cover the entire range of
2505 * available pwr levels since it's always the higher power curve). Extrapolate
2506 * below and above final table if needed.
2509 ath5k_combine_linear_pcdac_curves(struct ath5k_hw
*ah
, s16
* table_min
,
2510 s16
*table_max
, u8 pdcurves
)
2512 u8
*pcdac_out
= ah
->ah_txpower
.txp_pd_table
;
2519 s16 mid_pwr_idx
= 0;
2520 /* Edge flag turns on the 7nth bit on the PCDAC
2521 * to declare the higher power curve (force values
2522 * to be greater than 64). If we only have one curve
2523 * we don't need to set this, if we have 2 curves and
2524 * fill the table backwards this can also be used to
2525 * switch from higher power curve to lower power curve */
2529 /* When we have only one curve available
2530 * that's the higher power curve. If we have
2531 * two curves the first is the high power curve
2532 * and the next is the low power curve. */
2534 pcdac_low_pwr
= ah
->ah_txpower
.tmpL
[1];
2535 pcdac_high_pwr
= ah
->ah_txpower
.tmpL
[0];
2536 mid_pwr_idx
= table_max
[1] - table_min
[1] - 1;
2537 max_pwr_idx
= (table_max
[0] - table_min
[0]) / 2;
2539 /* If table size goes beyond 31.5dB, keep the
2540 * upper 31.5dB range when setting tx power.
2541 * Note: 126 = 31.5 dB in quarter dB steps */
2542 if (table_max
[0] - table_min
[1] > 126)
2543 min_pwr_idx
= table_max
[0] - 126;
2545 min_pwr_idx
= table_min
[1];
2547 /* Since we fill table backwards
2548 * start from high power curve */
2549 pcdac_tmp
= pcdac_high_pwr
;
2553 pcdac_low_pwr
= ah
->ah_txpower
.tmpL
[1]; /* Zeroed */
2554 pcdac_high_pwr
= ah
->ah_txpower
.tmpL
[0];
2555 min_pwr_idx
= table_min
[0];
2556 max_pwr_idx
= (table_max
[0] - table_min
[0]) / 2;
2557 pcdac_tmp
= pcdac_high_pwr
;
2561 /* This is used when setting tx power*/
2562 ah
->ah_txpower
.txp_min_idx
= min_pwr_idx
/ 2;
2564 /* Fill Power to PCDAC table backwards */
2566 for (i
= 63; i
>= 0; i
--) {
2567 /* Entering lower power range, reset
2568 * edge flag and set pcdac_tmp to lower
2570 if (edge_flag
== 0x40 &&
2571 (2 * pwr
<= (table_max
[1] - table_min
[0]) || pwr
== 0)) {
2573 pcdac_tmp
= pcdac_low_pwr
;
2574 pwr
= mid_pwr_idx
/ 2;
2577 /* Don't go below 1, extrapolate below if we have
2578 * already switched to the lower power curve -or
2579 * we only have one curve and edge_flag is zero
2581 if (pcdac_tmp
[pwr
] < 1 && (edge_flag
== 0x00)) {
2583 pcdac_out
[i
] = pcdac_out
[i
+ 1];
2589 pcdac_out
[i
] = pcdac_tmp
[pwr
] | edge_flag
;
2591 /* Extrapolate above if pcdac is greater than
2592 * 126 -this can happen because we OR pcdac_out
2593 * value with edge_flag on high power curve */
2594 if (pcdac_out
[i
] > 126)
2597 /* Decrease by a 0.5dB step */
2602 /* Write PCDAC values on hw */
2604 ath5k_write_pcdac_table(struct ath5k_hw
*ah
)
2606 u8
*pcdac_out
= ah
->ah_txpower
.txp_pd_table
;
2610 * Write TX power values
2612 for (i
= 0; i
< (AR5K_EEPROM_POWER_TABLE_SIZE
/ 2); i
++) {
2613 ath5k_hw_reg_write(ah
,
2614 (((pcdac_out
[2 * i
+ 0] << 8 | 0xff) & 0xffff) << 0) |
2615 (((pcdac_out
[2 * i
+ 1] << 8 | 0xff) & 0xffff) << 16),
2616 AR5K_PHY_PCDAC_TXPOWER(i
));
2622 * Power to PDADC table functions
2626 * Set the gain boundaries and create final Power to PDADC table
2628 * We can have up to 4 pd curves, we need to do a similar process
2629 * as we do for RF5112. This time we don't have an edge_flag but we
2630 * set the gain boundaries on a separate register.
2633 ath5k_combine_pwr_to_pdadc_curves(struct ath5k_hw
*ah
,
2634 s16
*pwr_min
, s16
*pwr_max
, u8 pdcurves
)
2636 u8 gain_boundaries
[AR5K_EEPROM_N_PD_GAINS
];
2637 u8
*pdadc_out
= ah
->ah_txpower
.txp_pd_table
;
2640 u8 pdadc_i
, pdadc_n
, pwr_step
, pdg
, max_idx
, table_size
;
2643 /* Note: Register value is initialized on initvals
2644 * there is no feedback from hw.
2645 * XXX: What about pd_gain_overlap from EEPROM ? */
2646 pd_gain_overlap
= (u8
) ath5k_hw_reg_read(ah
, AR5K_PHY_TPC_RG5
) &
2647 AR5K_PHY_TPC_RG5_PD_GAIN_OVERLAP
;
2649 /* Create final PDADC table */
2650 for (pdg
= 0, pdadc_i
= 0; pdg
< pdcurves
; pdg
++) {
2651 pdadc_tmp
= ah
->ah_txpower
.tmpL
[pdg
];
2653 if (pdg
== pdcurves
- 1)
2654 /* 2 dB boundary stretch for last
2655 * (higher power) curve */
2656 gain_boundaries
[pdg
] = pwr_max
[pdg
] + 4;
2658 /* Set gain boundary in the middle
2659 * between this curve and the next one */
2660 gain_boundaries
[pdg
] =
2661 (pwr_max
[pdg
] + pwr_min
[pdg
+ 1]) / 2;
2663 /* Sanity check in case our 2 db stretch got out of
2665 if (gain_boundaries
[pdg
] > AR5K_TUNE_MAX_TXPOWER
)
2666 gain_boundaries
[pdg
] = AR5K_TUNE_MAX_TXPOWER
;
2668 /* For the first curve (lower power)
2669 * start from 0 dB */
2673 /* For the other curves use the gain overlap */
2674 pdadc_0
= (gain_boundaries
[pdg
- 1] - pwr_min
[pdg
]) -
2677 /* Force each power step to be at least 0.5 dB */
2678 if ((pdadc_tmp
[1] - pdadc_tmp
[0]) > 1)
2679 pwr_step
= pdadc_tmp
[1] - pdadc_tmp
[0];
2683 /* If pdadc_0 is negative, we need to extrapolate
2684 * below this pdgain by a number of pwr_steps */
2685 while ((pdadc_0
< 0) && (pdadc_i
< 128)) {
2686 s16 tmp
= pdadc_tmp
[0] + pdadc_0
* pwr_step
;
2687 pdadc_out
[pdadc_i
++] = (tmp
< 0) ? 0 : (u8
) tmp
;
2691 /* Set last pwr level, using gain boundaries */
2692 pdadc_n
= gain_boundaries
[pdg
] + pd_gain_overlap
- pwr_min
[pdg
];
2693 /* Limit it to be inside pwr range */
2694 table_size
= pwr_max
[pdg
] - pwr_min
[pdg
];
2695 max_idx
= (pdadc_n
< table_size
) ? pdadc_n
: table_size
;
2697 /* Fill pdadc_out table */
2698 while (pdadc_0
< max_idx
&& pdadc_i
< 128)
2699 pdadc_out
[pdadc_i
++] = pdadc_tmp
[pdadc_0
++];
2701 /* Need to extrapolate above this pdgain? */
2702 if (pdadc_n
<= max_idx
)
2705 /* Force each power step to be at least 0.5 dB */
2706 if ((pdadc_tmp
[table_size
- 1] - pdadc_tmp
[table_size
- 2]) > 1)
2707 pwr_step
= pdadc_tmp
[table_size
- 1] -
2708 pdadc_tmp
[table_size
- 2];
2712 /* Extrapolate above */
2713 while ((pdadc_0
< (s16
) pdadc_n
) &&
2714 (pdadc_i
< AR5K_EEPROM_POWER_TABLE_SIZE
* 2)) {
2715 s16 tmp
= pdadc_tmp
[table_size
- 1] +
2716 (pdadc_0
- max_idx
) * pwr_step
;
2717 pdadc_out
[pdadc_i
++] = (tmp
> 127) ? 127 : (u8
) tmp
;
2722 while (pdg
< AR5K_EEPROM_N_PD_GAINS
) {
2723 gain_boundaries
[pdg
] = gain_boundaries
[pdg
- 1];
2727 while (pdadc_i
< AR5K_EEPROM_POWER_TABLE_SIZE
* 2) {
2728 pdadc_out
[pdadc_i
] = pdadc_out
[pdadc_i
- 1];
2732 /* Set gain boundaries */
2733 ath5k_hw_reg_write(ah
,
2734 AR5K_REG_SM(pd_gain_overlap
,
2735 AR5K_PHY_TPC_RG5_PD_GAIN_OVERLAP
) |
2736 AR5K_REG_SM(gain_boundaries
[0],
2737 AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_1
) |
2738 AR5K_REG_SM(gain_boundaries
[1],
2739 AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_2
) |
2740 AR5K_REG_SM(gain_boundaries
[2],
2741 AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_3
) |
2742 AR5K_REG_SM(gain_boundaries
[3],
2743 AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_4
),
2746 /* Used for setting rate power table */
2747 ah
->ah_txpower
.txp_min_idx
= pwr_min
[0];
2751 /* Write PDADC values on hw */
2753 ath5k_write_pwr_to_pdadc_table(struct ath5k_hw
*ah
, u8 ee_mode
)
2755 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
2756 u8
*pdadc_out
= ah
->ah_txpower
.txp_pd_table
;
2757 u8
*pdg_to_idx
= ee
->ee_pdc_to_idx
[ee_mode
];
2758 u8 pdcurves
= ee
->ee_pd_gains
[ee_mode
];
2762 /* Select the right pdgain curves */
2764 /* Clear current settings */
2765 reg
= ath5k_hw_reg_read(ah
, AR5K_PHY_TPC_RG1
);
2766 reg
&= ~(AR5K_PHY_TPC_RG1_PDGAIN_1
|
2767 AR5K_PHY_TPC_RG1_PDGAIN_2
|
2768 AR5K_PHY_TPC_RG1_PDGAIN_3
|
2769 AR5K_PHY_TPC_RG1_NUM_PD_GAIN
);
2772 * Use pd_gains curve from eeprom
2774 * This overrides the default setting from initvals
2775 * in case some vendors (e.g. Zcomax) don't use the default
2776 * curves. If we don't honor their settings we 'll get a
2777 * 5dB (1 * gain overlap ?) drop.
2779 reg
|= AR5K_REG_SM(pdcurves
, AR5K_PHY_TPC_RG1_NUM_PD_GAIN
);
2783 reg
|= AR5K_REG_SM(pdg_to_idx
[2], AR5K_PHY_TPC_RG1_PDGAIN_3
);
2786 reg
|= AR5K_REG_SM(pdg_to_idx
[1], AR5K_PHY_TPC_RG1_PDGAIN_2
);
2789 reg
|= AR5K_REG_SM(pdg_to_idx
[0], AR5K_PHY_TPC_RG1_PDGAIN_1
);
2792 ath5k_hw_reg_write(ah
, reg
, AR5K_PHY_TPC_RG1
);
2795 * Write TX power values
2797 for (i
= 0; i
< (AR5K_EEPROM_POWER_TABLE_SIZE
/ 2); i
++) {
2798 u32 val
= get_unaligned_le32(&pdadc_out
[4 * i
]);
2799 ath5k_hw_reg_write(ah
, val
, AR5K_PHY_PDADC_TXPOWER(i
));
2805 * Common code for PCDAC/PDADC tables
2809 * This is the main function that uses all of the above
2810 * to set PCDAC/PDADC table on hw for the current channel.
2811 * This table is used for tx power calibration on the baseband,
2812 * without it we get weird tx power levels and in some cases
2813 * distorted spectral mask
2816 ath5k_setup_channel_powertable(struct ath5k_hw
*ah
,
2817 struct ieee80211_channel
*channel
,
2818 u8 ee_mode
, u8 type
)
2820 struct ath5k_pdgain_info
*pdg_L
, *pdg_R
;
2821 struct ath5k_chan_pcal_info
*pcinfo_L
;
2822 struct ath5k_chan_pcal_info
*pcinfo_R
;
2823 struct ath5k_eeprom_info
*ee
= &ah
->ah_capabilities
.cap_eeprom
;
2824 u8
*pdg_curve_to_idx
= ee
->ee_pdc_to_idx
[ee_mode
];
2825 s16 table_min
[AR5K_EEPROM_N_PD_GAINS
];
2826 s16 table_max
[AR5K_EEPROM_N_PD_GAINS
];
2829 u32 target
= channel
->center_freq
;
2832 /* Get surrounding freq piers for this channel */
2833 ath5k_get_chan_pcal_surrounding_piers(ah
, channel
,
2837 /* Loop over pd gain curves on
2838 * surrounding freq piers by index */
2839 for (pdg
= 0; pdg
< ee
->ee_pd_gains
[ee_mode
]; pdg
++) {
2841 /* Fill curves in reverse order
2842 * from lower power (max gain)
2843 * to higher power. Use curve -> idx
2844 * backmapping we did on eeprom init */
2845 u8 idx
= pdg_curve_to_idx
[pdg
];
2847 /* Grab the needed curves by index */
2848 pdg_L
= &pcinfo_L
->pd_curves
[idx
];
2849 pdg_R
= &pcinfo_R
->pd_curves
[idx
];
2851 /* Initialize the temp tables */
2852 tmpL
= ah
->ah_txpower
.tmpL
[pdg
];
2853 tmpR
= ah
->ah_txpower
.tmpR
[pdg
];
2855 /* Set curve's x boundaries and create
2856 * curves so that they cover the same
2857 * range (if we don't do that one table
2858 * will have values on some range and the
2859 * other one won't have any so interpolation
2861 table_min
[pdg
] = min(pdg_L
->pd_pwr
[0],
2862 pdg_R
->pd_pwr
[0]) / 2;
2864 table_max
[pdg
] = max(pdg_L
->pd_pwr
[pdg_L
->pd_points
- 1],
2865 pdg_R
->pd_pwr
[pdg_R
->pd_points
- 1]) / 2;
2867 /* Now create the curves on surrounding channels
2868 * and interpolate if needed to get the final
2869 * curve for this gain on this channel */
2871 case AR5K_PWRTABLE_LINEAR_PCDAC
:
2872 /* Override min/max so that we don't loose
2873 * accuracy (don't divide by 2) */
2874 table_min
[pdg
] = min(pdg_L
->pd_pwr
[0],
2878 max(pdg_L
->pd_pwr
[pdg_L
->pd_points
- 1],
2879 pdg_R
->pd_pwr
[pdg_R
->pd_points
- 1]);
2881 /* Override minimum so that we don't get
2882 * out of bounds while extrapolating
2883 * below. Don't do this when we have 2
2884 * curves and we are on the high power curve
2885 * because table_min is ok in this case */
2886 if (!(ee
->ee_pd_gains
[ee_mode
] > 1 && pdg
== 0)) {
2889 ath5k_get_linear_pcdac_min(pdg_L
->pd_step
,
2894 /* Don't go too low because we will
2895 * miss the upper part of the curve.
2896 * Note: 126 = 31.5dB (max power supported)
2897 * in 0.25dB units */
2898 if (table_max
[pdg
] - table_min
[pdg
] > 126)
2899 table_min
[pdg
] = table_max
[pdg
] - 126;
2903 case AR5K_PWRTABLE_PWR_TO_PCDAC
:
2904 case AR5K_PWRTABLE_PWR_TO_PDADC
:
2906 ath5k_create_power_curve(table_min
[pdg
],
2910 pdg_L
->pd_points
, tmpL
, type
);
2912 /* We are in a calibration
2913 * pier, no need to interpolate
2914 * between freq piers */
2915 if (pcinfo_L
== pcinfo_R
)
2918 ath5k_create_power_curve(table_min
[pdg
],
2922 pdg_R
->pd_points
, tmpR
, type
);
2928 /* Interpolate between curves
2929 * of surrounding freq piers to
2930 * get the final curve for this
2931 * pd gain. Re-use tmpL for interpolation
2933 for (i
= 0; (i
< (u16
) (table_max
[pdg
] - table_min
[pdg
])) &&
2934 (i
< AR5K_EEPROM_POWER_TABLE_SIZE
); i
++) {
2935 tmpL
[i
] = (u8
) ath5k_get_interpolated_value(target
,
2936 (s16
) pcinfo_L
->freq
,
2937 (s16
) pcinfo_R
->freq
,
2943 /* Now we have a set of curves for this
2944 * channel on tmpL (x range is table_max - table_min
2945 * and y values are tmpL[pdg][]) sorted in the same
2946 * order as EEPROM (because we've used the backmapping).
2947 * So for RF5112 it's from higher power to lower power
2948 * and for RF2413 it's from lower power to higher power.
2949 * For RF5111 we only have one curve. */
2951 /* Fill min and max power levels for this
2952 * channel by interpolating the values on
2953 * surrounding channels to complete the dataset */
2954 ah
->ah_txpower
.txp_min_pwr
= ath5k_get_interpolated_value(target
,
2955 (s16
) pcinfo_L
->freq
,
2956 (s16
) pcinfo_R
->freq
,
2957 pcinfo_L
->min_pwr
, pcinfo_R
->min_pwr
);
2959 ah
->ah_txpower
.txp_max_pwr
= ath5k_get_interpolated_value(target
,
2960 (s16
) pcinfo_L
->freq
,
2961 (s16
) pcinfo_R
->freq
,
2962 pcinfo_L
->max_pwr
, pcinfo_R
->max_pwr
);
2964 /* Fill PCDAC/PDADC table */
2966 case AR5K_PWRTABLE_LINEAR_PCDAC
:
2967 /* For RF5112 we can have one or two curves
2968 * and each curve covers a certain power lvl
2969 * range so we need to do some more processing */
2970 ath5k_combine_linear_pcdac_curves(ah
, table_min
, table_max
,
2971 ee
->ee_pd_gains
[ee_mode
]);
2973 /* Set txp.offset so that we can
2974 * match max power value with max
2976 ah
->ah_txpower
.txp_offset
= 64 - (table_max
[0] / 2);
2978 case AR5K_PWRTABLE_PWR_TO_PCDAC
:
2979 /* We are done for RF5111 since it has only
2980 * one curve, just fit the curve on the table */
2981 ath5k_fill_pwr_to_pcdac_table(ah
, table_min
, table_max
);
2983 /* No rate powertable adjustment for RF5111 */
2984 ah
->ah_txpower
.txp_min_idx
= 0;
2985 ah
->ah_txpower
.txp_offset
= 0;
2987 case AR5K_PWRTABLE_PWR_TO_PDADC
:
2988 /* Set PDADC boundaries and fill
2989 * final PDADC table */
2990 ath5k_combine_pwr_to_pdadc_curves(ah
, table_min
, table_max
,
2991 ee
->ee_pd_gains
[ee_mode
]);
2993 /* Set txp.offset, note that table_min
2994 * can be negative */
2995 ah
->ah_txpower
.txp_offset
= table_min
[0];
3001 ah
->ah_txpower
.txp_setup
= true;
3006 /* Write power table for current channel to hw */
3008 ath5k_write_channel_powertable(struct ath5k_hw
*ah
, u8 ee_mode
, u8 type
)
3010 if (type
== AR5K_PWRTABLE_PWR_TO_PDADC
)
3011 ath5k_write_pwr_to_pdadc_table(ah
, ee_mode
);
3013 ath5k_write_pcdac_table(ah
);
3017 * Per-rate tx power setting
3019 * This is the code that sets the desired tx power (below
3020 * maximum) on hw for each rate (we also have TPC that sets
3021 * power per packet). We do that by providing an index on the
3022 * PCDAC/PDADC table we set up.
3026 * Set rate power table
3028 * For now we only limit txpower based on maximum tx power
3029 * supported by hw (what's inside rate_info). We need to limit
3030 * this even more, based on regulatory domain etc.
3032 * Rate power table contains indices to PCDAC/PDADC table (0.5dB steps)
3033 * and is indexed as follows:
3034 * rates[0] - rates[7] -> OFDM rates
3035 * rates[8] - rates[14] -> CCK rates
3036 * rates[15] -> XR rates (they all have the same power)
3039 ath5k_setup_rate_powertable(struct ath5k_hw
*ah
, u16 max_pwr
,
3040 struct ath5k_rate_pcal_info
*rate_info
,
3046 /* max_pwr is power level we got from driver/user in 0.5dB
3047 * units, switch to 0.25dB units so we can compare */
3049 max_pwr
= min(max_pwr
, (u16
) ah
->ah_txpower
.txp_max_pwr
) / 2;
3051 /* apply rate limits */
3052 rates
= ah
->ah_txpower
.txp_rates_power_table
;
3054 /* OFDM rates 6 to 24Mb/s */
3055 for (i
= 0; i
< 5; i
++)
3056 rates
[i
] = min(max_pwr
, rate_info
->target_power_6to24
);
3058 /* Rest OFDM rates */
3059 rates
[5] = min(rates
[0], rate_info
->target_power_36
);
3060 rates
[6] = min(rates
[0], rate_info
->target_power_48
);
3061 rates
[7] = min(rates
[0], rate_info
->target_power_54
);
3065 rates
[8] = min(rates
[0], rate_info
->target_power_6to24
);
3067 rates
[9] = min(rates
[0], rate_info
->target_power_36
);
3069 rates
[10] = min(rates
[0], rate_info
->target_power_36
);
3071 rates
[11] = min(rates
[0], rate_info
->target_power_48
);
3073 rates
[12] = min(rates
[0], rate_info
->target_power_48
);
3075 rates
[13] = min(rates
[0], rate_info
->target_power_54
);
3077 rates
[14] = min(rates
[0], rate_info
->target_power_54
);
3080 rates
[15] = min(rates
[0], rate_info
->target_power_6to24
);
3082 /* CCK rates have different peak to average ratio
3083 * so we have to tweak their power so that gainf
3084 * correction works ok. For this we use OFDM to
3085 * CCK delta from eeprom */
3086 if ((ee_mode
== AR5K_EEPROM_MODE_11G
) &&
3087 (ah
->ah_phy_revision
< AR5K_SREV_PHY_5212A
))
3088 for (i
= 8; i
<= 15; i
++)
3089 rates
[i
] -= ah
->ah_txpower
.txp_cck_ofdm_gainf_delta
;
3091 /* Now that we have all rates setup use table offset to
3092 * match the power range set by user with the power indices
3093 * on PCDAC/PDADC table */
3094 for (i
= 0; i
< 16; i
++) {
3095 rates
[i
] += ah
->ah_txpower
.txp_offset
;
3096 /* Don't get out of bounds */
3101 /* Min/max in 0.25dB units */
3102 ah
->ah_txpower
.txp_min_pwr
= 2 * rates
[7];
3103 ah
->ah_txpower
.txp_cur_pwr
= 2 * rates
[0];
3104 ah
->ah_txpower
.txp_ofdm
= rates
[7];
3109 * Set transmission power
3112 ath5k_hw_txpower(struct ath5k_hw
*ah
, struct ieee80211_channel
*channel
,
3115 struct ath5k_rate_pcal_info rate_info
;
3116 struct ieee80211_channel
*curr_channel
= ah
->ah_current_channel
;
3121 if (txpower
> AR5K_TUNE_MAX_TXPOWER
) {
3122 ATH5K_ERR(ah
, "invalid tx power: %u\n", txpower
);
3126 ee_mode
= ath5k_eeprom_mode_from_channel(channel
);
3129 "invalid channel: %d\n", channel
->center_freq
);
3133 /* Initialize TX power table */
3134 switch (ah
->ah_radio
) {
3139 type
= AR5K_PWRTABLE_PWR_TO_PCDAC
;
3142 type
= AR5K_PWRTABLE_LINEAR_PCDAC
;
3149 type
= AR5K_PWRTABLE_PWR_TO_PDADC
;
3156 * If we don't change channel/mode skip tx powertable calculation
3157 * and use the cached one.
3159 if (!ah
->ah_txpower
.txp_setup
||
3160 (channel
->hw_value
!= curr_channel
->hw_value
) ||
3161 (channel
->center_freq
!= curr_channel
->center_freq
)) {
3162 /* Reset TX power values */
3163 memset(&ah
->ah_txpower
, 0, sizeof(ah
->ah_txpower
));
3164 ah
->ah_txpower
.txp_tpc
= AR5K_TUNE_TPC_TXPOWER
;
3166 /* Calculate the powertable */
3167 ret
= ath5k_setup_channel_powertable(ah
, channel
,
3173 /* Write table on hw */
3174 ath5k_write_channel_powertable(ah
, ee_mode
, type
);
3176 /* Limit max power if we have a CTL available */
3177 ath5k_get_max_ctl_power(ah
, channel
);
3179 /* FIXME: Antenna reduction stuff */
3181 /* FIXME: Limit power on turbo modes */
3183 /* FIXME: TPC scale reduction */
3185 /* Get surrounding channels for per-rate power table
3187 ath5k_get_rate_pcal_data(ah
, channel
, &rate_info
);
3189 /* Setup rate power table */
3190 ath5k_setup_rate_powertable(ah
, txpower
, &rate_info
, ee_mode
);
3192 /* Write rate power table on hw */
3193 ath5k_hw_reg_write(ah
, AR5K_TXPOWER_OFDM(3, 24) |
3194 AR5K_TXPOWER_OFDM(2, 16) | AR5K_TXPOWER_OFDM(1, 8) |
3195 AR5K_TXPOWER_OFDM(0, 0), AR5K_PHY_TXPOWER_RATE1
);
3197 ath5k_hw_reg_write(ah
, AR5K_TXPOWER_OFDM(7, 24) |
3198 AR5K_TXPOWER_OFDM(6, 16) | AR5K_TXPOWER_OFDM(5, 8) |
3199 AR5K_TXPOWER_OFDM(4, 0), AR5K_PHY_TXPOWER_RATE2
);
3201 ath5k_hw_reg_write(ah
, AR5K_TXPOWER_CCK(10, 24) |
3202 AR5K_TXPOWER_CCK(9, 16) | AR5K_TXPOWER_CCK(15, 8) |
3203 AR5K_TXPOWER_CCK(8, 0), AR5K_PHY_TXPOWER_RATE3
);
3205 ath5k_hw_reg_write(ah
, AR5K_TXPOWER_CCK(14, 24) |
3206 AR5K_TXPOWER_CCK(13, 16) | AR5K_TXPOWER_CCK(12, 8) |
3207 AR5K_TXPOWER_CCK(11, 0), AR5K_PHY_TXPOWER_RATE4
);
3209 /* FIXME: TPC support */
3210 if (ah
->ah_txpower
.txp_tpc
) {
3211 ath5k_hw_reg_write(ah
, AR5K_PHY_TXPOWER_RATE_MAX_TPC_ENABLE
|
3212 AR5K_TUNE_MAX_TXPOWER
, AR5K_PHY_TXPOWER_RATE_MAX
);
3214 ath5k_hw_reg_write(ah
,
3215 AR5K_REG_MS(AR5K_TUNE_MAX_TXPOWER
, AR5K_TPC_ACK
) |
3216 AR5K_REG_MS(AR5K_TUNE_MAX_TXPOWER
, AR5K_TPC_CTS
) |
3217 AR5K_REG_MS(AR5K_TUNE_MAX_TXPOWER
, AR5K_TPC_CHIRP
),
3220 ath5k_hw_reg_write(ah
, AR5K_PHY_TXPOWER_RATE_MAX
|
3221 AR5K_TUNE_MAX_TXPOWER
, AR5K_PHY_TXPOWER_RATE_MAX
);
3227 int ath5k_hw_set_txpower_limit(struct ath5k_hw
*ah
, u8 txpower
)
3229 ATH5K_DBG(ah
, ATH5K_DEBUG_TXPOWER
,
3230 "changing txpower to %d\n", txpower
);
3232 return ath5k_hw_txpower(ah
, ah
->ah_current_channel
, txpower
);
3239 int ath5k_hw_phy_init(struct ath5k_hw
*ah
, struct ieee80211_channel
*channel
,
3242 struct ieee80211_channel
*curr_channel
;
3248 * Sanity check for fast flag
3249 * Don't try fast channel change when changing modulation
3250 * mode/band. We check for chip compatibility on
3253 curr_channel
= ah
->ah_current_channel
;
3254 if (fast
&& (channel
->hw_value
!= curr_channel
->hw_value
))
3258 * On fast channel change we only set the synth parameters
3259 * while PHY is running, enable calibration and skip the rest.
3262 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_RFBUS_REQ
,
3263 AR5K_PHY_RFBUS_REQ_REQUEST
);
3264 for (i
= 0; i
< 100; i
++) {
3265 if (ath5k_hw_reg_read(ah
, AR5K_PHY_RFBUS_GRANT
))
3273 /* Set channel and wait for synth */
3274 ret
= ath5k_hw_channel(ah
, channel
);
3278 ath5k_hw_wait_for_synth(ah
, channel
);
3284 * Note: We need to do that before we set
3285 * RF buffer settings on 5211/5212+ so that we
3286 * properly set curve indices.
3288 ret
= ath5k_hw_txpower(ah
, channel
, ah
->ah_txpower
.txp_cur_pwr
?
3289 ah
->ah_txpower
.txp_cur_pwr
/ 2 : AR5K_TUNE_MAX_TXPOWER
);
3293 /* Write OFDM timings on 5212*/
3294 if (ah
->ah_version
== AR5K_AR5212
&&
3295 channel
->hw_value
& CHANNEL_OFDM
) {
3297 ret
= ath5k_hw_write_ofdm_timings(ah
, channel
);
3301 /* Spur info is available only from EEPROM versions
3302 * greater than 5.3, but the EEPROM routines will use
3303 * static values for older versions */
3304 if (ah
->ah_mac_srev
>= AR5K_SREV_AR5424
)
3305 ath5k_hw_set_spur_mitigation_filter(ah
,
3309 /* If we used fast channel switching
3310 * we are done, release RF bus and
3311 * fire up NF calibration.
3313 * Note: Only NF calibration due to
3314 * channel change, not AGC calibration
3315 * since AGC is still running !
3319 * Release RF Bus grant
3321 AR5K_REG_DISABLE_BITS(ah
, AR5K_PHY_RFBUS_REQ
,
3322 AR5K_PHY_RFBUS_REQ_REQUEST
);
3325 * Start NF calibration
3327 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGCCTL
,
3328 AR5K_PHY_AGCCTL_NF
);
3334 * For 5210 we do all initialization using
3335 * initvals, so we don't have to modify
3336 * any settings (5210 also only supports
3339 if (ah
->ah_version
!= AR5K_AR5210
) {
3342 * Write initial RF gain settings
3343 * This should work for both 5111/5112
3345 ret
= ath5k_hw_rfgain_init(ah
, channel
->band
);
3354 ret
= ath5k_hw_rfregs_init(ah
, channel
, mode
);
3358 /*Enable/disable 802.11b mode on 5111
3359 (enable 2111 frequency converter + CCK)*/
3360 if (ah
->ah_radio
== AR5K_RF5111
) {
3361 if (mode
== AR5K_MODE_11B
)
3362 AR5K_REG_ENABLE_BITS(ah
, AR5K_TXCFG
,
3365 AR5K_REG_DISABLE_BITS(ah
, AR5K_TXCFG
,
3369 } else if (ah
->ah_version
== AR5K_AR5210
) {
3371 /* Disable phy and wait */
3372 ath5k_hw_reg_write(ah
, AR5K_PHY_ACT_DISABLE
, AR5K_PHY_ACT
);
3376 /* Set channel on PHY */
3377 ret
= ath5k_hw_channel(ah
, channel
);
3382 * Enable the PHY and wait until completion
3383 * This includes BaseBand and Synthesizer
3386 ath5k_hw_reg_write(ah
, AR5K_PHY_ACT_ENABLE
, AR5K_PHY_ACT
);
3388 ath5k_hw_wait_for_synth(ah
, channel
);
3391 * Perform ADC test to see if baseband is ready
3392 * Set tx hold and check adc test register
3394 phy_tst1
= ath5k_hw_reg_read(ah
, AR5K_PHY_TST1
);
3395 ath5k_hw_reg_write(ah
, AR5K_PHY_TST1_TXHOLD
, AR5K_PHY_TST1
);
3396 for (i
= 0; i
<= 20; i
++) {
3397 if (!(ath5k_hw_reg_read(ah
, AR5K_PHY_ADC_TEST
) & 0x10))
3401 ath5k_hw_reg_write(ah
, phy_tst1
, AR5K_PHY_TST1
);
3404 * Start automatic gain control calibration
3406 * During AGC calibration RX path is re-routed to
3407 * a power detector so we don't receive anything.
3409 * This method is used to calibrate some static offsets
3410 * used together with on-the fly I/Q calibration (the
3411 * one performed via ath5k_hw_phy_calibrate), which doesn't
3412 * interrupt rx path.
3414 * While rx path is re-routed to the power detector we also
3415 * start a noise floor calibration to measure the
3416 * card's noise floor (the noise we measure when we are not
3417 * transmitting or receiving anything).
3419 * If we are in a noisy environment, AGC calibration may time
3420 * out and/or noise floor calibration might timeout.
3422 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_AGCCTL
,
3423 AR5K_PHY_AGCCTL_CAL
| AR5K_PHY_AGCCTL_NF
);
3425 /* At the same time start I/Q calibration for QAM constellation
3426 * -no need for CCK- */
3427 ah
->ah_calibration
= false;
3428 if (!(mode
== AR5K_MODE_11B
)) {
3429 ah
->ah_calibration
= true;
3430 AR5K_REG_WRITE_BITS(ah
, AR5K_PHY_IQ
,
3431 AR5K_PHY_IQ_CAL_NUM_LOG_MAX
, 15);
3432 AR5K_REG_ENABLE_BITS(ah
, AR5K_PHY_IQ
,
3436 /* Wait for gain calibration to finish (we check for I/Q calibration
3437 * during ath5k_phy_calibrate) */
3438 if (ath5k_hw_register_timeout(ah
, AR5K_PHY_AGCCTL
,
3439 AR5K_PHY_AGCCTL_CAL
, 0, false)) {
3440 ATH5K_ERR(ah
, "gain calibration timeout (%uMHz)\n",
3441 channel
->center_freq
);
3444 /* Restore antenna mode */
3445 ath5k_hw_set_antenna_mode(ah
, ah
->ah_ant_mode
);