3 Broadcom B43 wireless driver
4 IEEE 802.11a PHY driver
6 Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
7 Copyright (c) 2005-2007 Stefano Brivio <stefano.brivio@polimi.it>
8 Copyright (c) 2005-2008 Michael Buesch <mb@bu3sch.de>
9 Copyright (c) 2005, 2006 Danny van Dyk <kugelfang@gentoo.org>
10 Copyright (c) 2005, 2006 Andreas Jaggi <andreas.jaggi@waterwave.ch>
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; see the file COPYING. If not, write to
24 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
25 Boston, MA 02110-1301, USA.
29 #include <linux/slab.h>
33 #include "phy_common.h"
39 /* Get the freq, as it has to be written to the device. */
40 static inline u16
channel2freq_a(u8 channel
)
42 B43_WARN_ON(channel
> 200);
44 return (5000 + 5 * channel
);
47 static inline u16
freq_r3A_value(u16 frequency
)
53 else if (frequency
< 5321)
55 else if (frequency
< 5806)
64 /* This function converts a TSSI value to dBm in Q5.2 */
65 static s8
b43_aphy_estimate_power_out(struct b43_wldev
*dev
, s8 tssi
)
67 struct b43_phy
*phy
= &dev
->phy
;
68 struct b43_phy_a
*aphy
= phy
->a
;
72 tmp
= (aphy
->tgt_idle_tssi
- aphy
->cur_idle_tssi
+ tssi
);
74 tmp
= clamp_val(tmp
, 0x00, 0xFF);
75 dbm
= aphy
->tssi2dbm
[tmp
];
76 //TODO: There's a FIXME on the specs
82 static void b43_radio_set_tx_iq(struct b43_wldev
*dev
)
84 static const u8 data_high
[5] = { 0x00, 0x40, 0x80, 0x90, 0xD0 };
85 static const u8 data_low
[5] = { 0x00, 0x01, 0x05, 0x06, 0x0A };
86 u16 tmp
= b43_radio_read16(dev
, 0x001E);
89 for (i
= 0; i
< 5; i
++) {
90 for (j
= 0; j
< 5; j
++) {
91 if (tmp
== (data_high
[i
] << 4 | data_low
[j
])) {
92 b43_phy_write(dev
, 0x0069,
93 (i
- j
) << 8 | 0x00C0);
100 static void aphy_channel_switch(struct b43_wldev
*dev
, unsigned int channel
)
104 freq
= channel2freq_a(channel
);
106 r8
= b43_radio_read16(dev
, 0x0008);
107 b43_write16(dev
, 0x03F0, freq
);
108 b43_radio_write16(dev
, 0x0008, r8
);
110 //TODO: write max channel TX power? to Radio 0x2D
111 tmp
= b43_radio_read16(dev
, 0x002E);
113 //TODO: OR tmp with the Power out estimation for this channel?
114 b43_radio_write16(dev
, 0x002E, tmp
);
116 if (freq
>= 4920 && freq
<= 5500) {
118 * r8 = (((freq * 15 * 0xE1FC780F) >> 32) / 29) & 0x0F;
119 * = (freq * 0.025862069
121 r8
= 3 * freq
/ 116; /* is equal to r8 = freq * 0.025862 */
123 b43_radio_write16(dev
, 0x0007, (r8
<< 4) | r8
);
124 b43_radio_write16(dev
, 0x0020, (r8
<< 4) | r8
);
125 b43_radio_write16(dev
, 0x0021, (r8
<< 4) | r8
);
126 b43_radio_maskset(dev
, 0x0022, 0x000F, (r8
<< 4));
127 b43_radio_write16(dev
, 0x002A, (r8
<< 4));
128 b43_radio_write16(dev
, 0x002B, (r8
<< 4));
129 b43_radio_maskset(dev
, 0x0008, 0x00F0, (r8
<< 4));
130 b43_radio_maskset(dev
, 0x0029, 0xFF0F, 0x00B0);
131 b43_radio_write16(dev
, 0x0035, 0x00AA);
132 b43_radio_write16(dev
, 0x0036, 0x0085);
133 b43_radio_maskset(dev
, 0x003A, 0xFF20, freq_r3A_value(freq
));
134 b43_radio_mask(dev
, 0x003D, 0x00FF);
135 b43_radio_maskset(dev
, 0x0081, 0xFF7F, 0x0080);
136 b43_radio_mask(dev
, 0x0035, 0xFFEF);
137 b43_radio_maskset(dev
, 0x0035, 0xFFEF, 0x0010);
138 b43_radio_set_tx_iq(dev
);
139 //TODO: TSSI2dbm workaround
140 //FIXME b43_phy_xmitpower(dev);
143 static void b43_radio_init2060(struct b43_wldev
*dev
)
145 b43_radio_write16(dev
, 0x0004, 0x00C0);
146 b43_radio_write16(dev
, 0x0005, 0x0008);
147 b43_radio_write16(dev
, 0x0009, 0x0040);
148 b43_radio_write16(dev
, 0x0005, 0x00AA);
149 b43_radio_write16(dev
, 0x0032, 0x008F);
150 b43_radio_write16(dev
, 0x0006, 0x008F);
151 b43_radio_write16(dev
, 0x0034, 0x008F);
152 b43_radio_write16(dev
, 0x002C, 0x0007);
153 b43_radio_write16(dev
, 0x0082, 0x0080);
154 b43_radio_write16(dev
, 0x0080, 0x0000);
155 b43_radio_write16(dev
, 0x003F, 0x00DA);
156 b43_radio_mask(dev
, 0x0005, ~0x0008);
157 b43_radio_mask(dev
, 0x0081, ~0x0010);
158 b43_radio_mask(dev
, 0x0081, ~0x0020);
159 b43_radio_mask(dev
, 0x0081, ~0x0020);
160 msleep(1); /* delay 400usec */
162 b43_radio_maskset(dev
, 0x0081, ~0x0020, 0x0010);
163 msleep(1); /* delay 400usec */
165 b43_radio_maskset(dev
, 0x0005, ~0x0008, 0x0008);
166 b43_radio_mask(dev
, 0x0085, ~0x0010);
167 b43_radio_mask(dev
, 0x0005, ~0x0008);
168 b43_radio_mask(dev
, 0x0081, ~0x0040);
169 b43_radio_maskset(dev
, 0x0081, ~0x0040, 0x0040);
170 b43_radio_write16(dev
, 0x0005,
171 (b43_radio_read16(dev
, 0x0081) & ~0x0008) | 0x0008);
172 b43_phy_write(dev
, 0x0063, 0xDDC6);
173 b43_phy_write(dev
, 0x0069, 0x07BE);
174 b43_phy_write(dev
, 0x006A, 0x0000);
176 aphy_channel_switch(dev
, dev
->phy
.ops
->get_default_chan(dev
));
181 static void b43_phy_rssiagc(struct b43_wldev
*dev
, u8 enable
)
185 if (dev
->phy
.rev
< 3) {
187 for (i
= 0; i
< B43_TAB_RSSIAGC1_SIZE
; i
++) {
188 b43_ofdmtab_write16(dev
,
189 B43_OFDMTAB_LNAHPFGAIN1
, i
, 0xFFF8);
190 b43_ofdmtab_write16(dev
,
191 B43_OFDMTAB_WRSSI
, i
, 0xFFF8);
194 for (i
= 0; i
< B43_TAB_RSSIAGC1_SIZE
; i
++) {
195 b43_ofdmtab_write16(dev
,
196 B43_OFDMTAB_LNAHPFGAIN1
, i
, b43_tab_rssiagc1
[i
]);
197 b43_ofdmtab_write16(dev
,
198 B43_OFDMTAB_WRSSI
, i
, b43_tab_rssiagc1
[i
]);
202 for (i
= 0; i
< B43_TAB_RSSIAGC1_SIZE
; i
++)
203 b43_ofdmtab_write16(dev
,
204 B43_OFDMTAB_WRSSI
, i
, 0x0820);
206 for (i
= 0; i
< B43_TAB_RSSIAGC2_SIZE
; i
++)
207 b43_ofdmtab_write16(dev
,
208 B43_OFDMTAB_WRSSI
, i
, b43_tab_rssiagc2
[i
]);
212 static void b43_phy_ww(struct b43_wldev
*dev
)
214 u16 b
, curr_s
, best_s
= 0xFFFF;
217 b43_phy_mask(dev
, B43_PHY_CRS0
, ~B43_PHY_CRS0_EN
);
218 b43_phy_set(dev
, B43_PHY_OFDM(0x1B), 0x1000);
219 b43_phy_maskset(dev
, B43_PHY_OFDM(0x82), 0xF0FF, 0x0300);
220 b43_radio_set(dev
, 0x0009, 0x0080);
221 b43_radio_maskset(dev
, 0x0012, 0xFFFC, 0x0002);
222 b43_wa_initgains(dev
);
223 b43_phy_write(dev
, B43_PHY_OFDM(0xBA), 0x3ED5);
224 b
= b43_phy_read(dev
, B43_PHY_PWRDOWN
);
225 b43_phy_write(dev
, B43_PHY_PWRDOWN
, (b
& 0xFFF8) | 0x0005);
226 b43_radio_set(dev
, 0x0004, 0x0004);
227 for (i
= 0x10; i
<= 0x20; i
++) {
228 b43_radio_write16(dev
, 0x0013, i
);
229 curr_s
= b43_phy_read(dev
, B43_PHY_OTABLEQ
) & 0x00FF;
233 } else if (curr_s
>= 0x0080)
234 curr_s
= 0x0100 - curr_s
;
238 b43_phy_write(dev
, B43_PHY_PWRDOWN
, b
);
239 b43_radio_mask(dev
, 0x0004, 0xFFFB);
240 b43_radio_write16(dev
, 0x0013, best_s
);
241 b43_ofdmtab_write16(dev
, B43_OFDMTAB_AGC1_R1
, 0, 0xFFEC);
242 b43_phy_write(dev
, B43_PHY_OFDM(0xB7), 0x1E80);
243 b43_phy_write(dev
, B43_PHY_OFDM(0xB6), 0x1C00);
244 b43_phy_write(dev
, B43_PHY_OFDM(0xB5), 0x0EC0);
245 b43_phy_write(dev
, B43_PHY_OFDM(0xB2), 0x00C0);
246 b43_phy_write(dev
, B43_PHY_OFDM(0xB9), 0x1FFF);
247 b43_phy_maskset(dev
, B43_PHY_OFDM(0xBB), 0xF000, 0x0053);
248 b43_phy_maskset(dev
, B43_PHY_OFDM61
, 0xFE1F, 0x0120);
249 b43_phy_maskset(dev
, B43_PHY_OFDM(0x13), 0x0FFF, 0x3000);
250 b43_phy_maskset(dev
, B43_PHY_OFDM(0x14), 0x0FFF, 0x3000);
251 b43_ofdmtab_write16(dev
, B43_OFDMTAB_AGC1
, 6, 0x0017);
252 for (i
= 0; i
< 6; i
++)
253 b43_ofdmtab_write16(dev
, B43_OFDMTAB_AGC1
, i
, 0x000F);
254 b43_ofdmtab_write16(dev
, B43_OFDMTAB_AGC1
, 0x0D, 0x000E);
255 b43_ofdmtab_write16(dev
, B43_OFDMTAB_AGC1
, 0x0E, 0x0011);
256 b43_ofdmtab_write16(dev
, B43_OFDMTAB_AGC1
, 0x0F, 0x0013);
257 b43_phy_write(dev
, B43_PHY_OFDM(0x33), 0x5030);
258 b43_phy_set(dev
, B43_PHY_CRS0
, B43_PHY_CRS0_EN
);
261 static void hardware_pctl_init_aphy(struct b43_wldev
*dev
)
266 void b43_phy_inita(struct b43_wldev
*dev
)
268 struct ssb_bus
*bus
= dev
->dev
->bus
;
269 struct b43_phy
*phy
= &dev
->phy
;
271 /* This lowlevel A-PHY init is also called from G-PHY init.
272 * So we must not access phy->a, if called from G-PHY code.
274 B43_WARN_ON((phy
->type
!= B43_PHYTYPE_A
) &&
275 (phy
->type
!= B43_PHYTYPE_G
));
280 if (phy
->type
== B43_PHYTYPE_A
)
281 b43_phy_mask(dev
, B43_PHY_OFDM(0x1B), ~0x1000);
282 if (b43_phy_read(dev
, B43_PHY_ENCORE
) & B43_PHY_ENCORE_EN
)
283 b43_phy_set(dev
, B43_PHY_ENCORE
, 0x0010);
285 b43_phy_mask(dev
, B43_PHY_ENCORE
, ~0x1010);
290 if (phy
->type
== B43_PHYTYPE_A
) {
291 if (phy
->gmode
&& (phy
->rev
< 3))
292 b43_phy_set(dev
, 0x0034, 0x0001);
293 b43_phy_rssiagc(dev
, 0);
295 b43_phy_set(dev
, B43_PHY_CRS0
, B43_PHY_CRS0_EN
);
297 b43_radio_init2060(dev
);
299 if ((bus
->boardinfo
.vendor
== SSB_BOARDVENDOR_BCM
) &&
300 ((bus
->boardinfo
.type
== SSB_BOARD_BU4306
) ||
301 (bus
->boardinfo
.type
== SSB_BOARD_BU4309
))) {
308 hardware_pctl_init_aphy(dev
);
310 //TODO: radar detection
313 if ((phy
->type
== B43_PHYTYPE_G
) &&
314 (dev
->dev
->bus
->sprom
.boardflags_lo
& B43_BFL_PACTRL
)) {
315 b43_phy_maskset(dev
, B43_PHY_OFDM(0x6E), 0xE000, 0x3CF);
319 /* Initialise the TSSI->dBm lookup table */
320 static int b43_aphy_init_tssi2dbm_table(struct b43_wldev
*dev
)
322 struct b43_phy
*phy
= &dev
->phy
;
323 struct b43_phy_a
*aphy
= phy
->a
;
324 s16 pab0
, pab1
, pab2
;
326 pab0
= (s16
) (dev
->dev
->bus
->sprom
.pa1b0
);
327 pab1
= (s16
) (dev
->dev
->bus
->sprom
.pa1b1
);
328 pab2
= (s16
) (dev
->dev
->bus
->sprom
.pa1b2
);
330 if (pab0
!= 0 && pab1
!= 0 && pab2
!= 0 &&
331 pab0
!= -1 && pab1
!= -1 && pab2
!= -1) {
332 /* The pabX values are set in SPROM. Use them. */
333 if ((s8
) dev
->dev
->bus
->sprom
.itssi_a
!= 0 &&
334 (s8
) dev
->dev
->bus
->sprom
.itssi_a
!= -1)
335 aphy
->tgt_idle_tssi
=
336 (s8
) (dev
->dev
->bus
->sprom
.itssi_a
);
338 aphy
->tgt_idle_tssi
= 62;
339 aphy
->tssi2dbm
= b43_generate_dyn_tssi2dbm_tab(dev
, pab0
,
344 /* pabX values not set in SPROM,
345 * but APHY needs a generated table. */
346 aphy
->tssi2dbm
= NULL
;
347 b43err(dev
->wl
, "Could not generate tssi2dBm "
348 "table (wrong SPROM info)!\n");
355 static int b43_aphy_op_allocate(struct b43_wldev
*dev
)
357 struct b43_phy_a
*aphy
;
360 aphy
= kzalloc(sizeof(*aphy
), GFP_KERNEL
);
365 err
= b43_aphy_init_tssi2dbm_table(dev
);
378 static void b43_aphy_op_prepare_structs(struct b43_wldev
*dev
)
380 struct b43_phy
*phy
= &dev
->phy
;
381 struct b43_phy_a
*aphy
= phy
->a
;
382 const void *tssi2dbm
;
385 /* tssi2dbm table is constant, so it is initialized at alloc time.
386 * Save a copy of the pointer. */
387 tssi2dbm
= aphy
->tssi2dbm
;
388 tgt_idle_tssi
= aphy
->tgt_idle_tssi
;
390 /* Zero out the whole PHY structure. */
391 memset(aphy
, 0, sizeof(*aphy
));
393 aphy
->tssi2dbm
= tssi2dbm
;
394 aphy
->tgt_idle_tssi
= tgt_idle_tssi
;
396 //TODO init struct b43_phy_a
400 static void b43_aphy_op_free(struct b43_wldev
*dev
)
402 struct b43_phy
*phy
= &dev
->phy
;
403 struct b43_phy_a
*aphy
= phy
->a
;
405 kfree(aphy
->tssi2dbm
);
406 aphy
->tssi2dbm
= NULL
;
412 static int b43_aphy_op_init(struct b43_wldev
*dev
)
419 static inline u16
adjust_phyreg(struct b43_wldev
*dev
, u16 offset
)
421 /* OFDM registers are base-registers for the A-PHY. */
422 if ((offset
& B43_PHYROUTE
) == B43_PHYROUTE_OFDM_GPHY
) {
423 offset
&= ~B43_PHYROUTE
;
424 offset
|= B43_PHYROUTE_BASE
;
428 if ((offset
& B43_PHYROUTE
) == B43_PHYROUTE_EXT_GPHY
) {
429 /* Ext-G registers are only available on G-PHYs */
430 b43err(dev
->wl
, "Invalid EXT-G PHY access at "
431 "0x%04X on A-PHY\n", offset
);
434 if ((offset
& B43_PHYROUTE
) == B43_PHYROUTE_N_BMODE
) {
435 /* N-BMODE registers are only available on N-PHYs */
436 b43err(dev
->wl
, "Invalid N-BMODE PHY access at "
437 "0x%04X on A-PHY\n", offset
);
440 #endif /* B43_DEBUG */
445 static u16
b43_aphy_op_read(struct b43_wldev
*dev
, u16 reg
)
447 reg
= adjust_phyreg(dev
, reg
);
448 b43_write16(dev
, B43_MMIO_PHY_CONTROL
, reg
);
449 return b43_read16(dev
, B43_MMIO_PHY_DATA
);
452 static void b43_aphy_op_write(struct b43_wldev
*dev
, u16 reg
, u16 value
)
454 reg
= adjust_phyreg(dev
, reg
);
455 b43_write16(dev
, B43_MMIO_PHY_CONTROL
, reg
);
456 b43_write16(dev
, B43_MMIO_PHY_DATA
, value
);
459 static u16
b43_aphy_op_radio_read(struct b43_wldev
*dev
, u16 reg
)
461 /* Register 1 is a 32-bit register. */
462 B43_WARN_ON(reg
== 1);
463 /* A-PHY needs 0x40 for read access */
466 b43_write16(dev
, B43_MMIO_RADIO_CONTROL
, reg
);
467 return b43_read16(dev
, B43_MMIO_RADIO_DATA_LOW
);
470 static void b43_aphy_op_radio_write(struct b43_wldev
*dev
, u16 reg
, u16 value
)
472 /* Register 1 is a 32-bit register. */
473 B43_WARN_ON(reg
== 1);
475 b43_write16(dev
, B43_MMIO_RADIO_CONTROL
, reg
);
476 b43_write16(dev
, B43_MMIO_RADIO_DATA_LOW
, value
);
479 static bool b43_aphy_op_supports_hwpctl(struct b43_wldev
*dev
)
481 return (dev
->phy
.rev
>= 5);
484 static void b43_aphy_op_software_rfkill(struct b43_wldev
*dev
,
487 struct b43_phy
*phy
= &dev
->phy
;
492 b43_radio_write16(dev
, 0x0004, 0x00C0);
493 b43_radio_write16(dev
, 0x0005, 0x0008);
494 b43_phy_mask(dev
, 0x0010, 0xFFF7);
495 b43_phy_mask(dev
, 0x0011, 0xFFF7);
496 b43_radio_init2060(dev
);
498 b43_radio_write16(dev
, 0x0004, 0x00FF);
499 b43_radio_write16(dev
, 0x0005, 0x00FB);
500 b43_phy_set(dev
, 0x0010, 0x0008);
501 b43_phy_set(dev
, 0x0011, 0x0008);
505 static int b43_aphy_op_switch_channel(struct b43_wldev
*dev
,
506 unsigned int new_channel
)
508 if (new_channel
> 200)
510 aphy_channel_switch(dev
, new_channel
);
515 static unsigned int b43_aphy_op_get_default_chan(struct b43_wldev
*dev
)
517 return 36; /* Default to channel 36 */
520 static void b43_aphy_op_set_rx_antenna(struct b43_wldev
*dev
, int antenna
)
522 struct b43_phy
*phy
= &dev
->phy
;
526 if (antenna
== B43_ANTENNA_AUTO0
|| antenna
== B43_ANTENNA_AUTO1
)
529 b43_hf_write(dev
, b43_hf_read(dev
) & ~B43_HF_ANTDIVHELP
);
531 b43_phy_maskset(dev
, B43_PHY_BBANDCFG
, ~B43_PHY_BBANDCFG_RXANT
,
532 (autodiv
? B43_ANTENNA_AUTO1
: antenna
) <<
533 B43_PHY_BBANDCFG_RXANT_SHIFT
);
536 tmp
= b43_phy_read(dev
, B43_PHY_ANTDWELL
);
537 if (antenna
== B43_ANTENNA_AUTO1
)
538 tmp
&= ~B43_PHY_ANTDWELL_AUTODIV1
;
540 tmp
|= B43_PHY_ANTDWELL_AUTODIV1
;
541 b43_phy_write(dev
, B43_PHY_ANTDWELL
, tmp
);
544 b43_phy_maskset(dev
, B43_PHY_ANTDWELL
, 0xFF00, 0x24);
546 b43_phy_set(dev
, B43_PHY_OFDM61
, 0x10);
548 b43_phy_write(dev
, B43_PHY_CLIPPWRDOWNT
, 0x1D);
549 b43_phy_write(dev
, B43_PHY_ADIVRELATED
, 8);
551 b43_phy_write(dev
, B43_PHY_CLIPPWRDOWNT
, 0x3A);
552 b43_phy_maskset(dev
, B43_PHY_ADIVRELATED
, 0xFF00, 8);
556 b43_hf_write(dev
, b43_hf_read(dev
) | B43_HF_ANTDIVHELP
);
559 static void b43_aphy_op_adjust_txpower(struct b43_wldev
*dev
)
563 static enum b43_txpwr_result
b43_aphy_op_recalc_txpower(struct b43_wldev
*dev
,
566 return B43_TXPWR_RES_DONE
;
569 static void b43_aphy_op_pwork_15sec(struct b43_wldev
*dev
)
573 static void b43_aphy_op_pwork_60sec(struct b43_wldev
*dev
)
577 const struct b43_phy_operations b43_phyops_a
= {
578 .allocate
= b43_aphy_op_allocate
,
579 .free
= b43_aphy_op_free
,
580 .prepare_structs
= b43_aphy_op_prepare_structs
,
581 .init
= b43_aphy_op_init
,
582 .phy_read
= b43_aphy_op_read
,
583 .phy_write
= b43_aphy_op_write
,
584 .radio_read
= b43_aphy_op_radio_read
,
585 .radio_write
= b43_aphy_op_radio_write
,
586 .supports_hwpctl
= b43_aphy_op_supports_hwpctl
,
587 .software_rfkill
= b43_aphy_op_software_rfkill
,
588 .switch_analog
= b43_phyop_switch_analog_generic
,
589 .switch_channel
= b43_aphy_op_switch_channel
,
590 .get_default_chan
= b43_aphy_op_get_default_chan
,
591 .set_rx_antenna
= b43_aphy_op_set_rx_antenna
,
592 .recalc_txpower
= b43_aphy_op_recalc_txpower
,
593 .adjust_txpower
= b43_aphy_op_adjust_txpower
,
594 .pwork_15sec
= b43_aphy_op_pwork_15sec
,
595 .pwork_60sec
= b43_aphy_op_pwork_60sec
,