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.
31 #include "phy_common.h"
37 /* Get the freq, as it has to be written to the device. */
38 static inline u16 channel2freq_a(u8 channel)
40 B43_WARN_ON(channel > 200);
42 return (5000 + 5 * channel);
45 static inline u16 freq_r3A_value(u16 frequency)
51 else if (frequency < 5321)
53 else if (frequency < 5806)
62 /* This function converts a TSSI value to dBm in Q5.2 */
63 static s8 b43_aphy_estimate_power_out(struct b43_wldev *dev, s8 tssi)
65 struct b43_phy *phy = &dev->phy;
66 struct b43_phy_a *aphy = phy->a;
70 tmp = (aphy->tgt_idle_tssi - aphy->cur_idle_tssi + tssi);
72 tmp = clamp_val(tmp, 0x00, 0xFF);
73 dbm = aphy->tssi2dbm[tmp];
74 //TODO: There's a FIXME on the specs
80 static void b43_radio_set_tx_iq(struct b43_wldev *dev)
82 static const u8 data_high[5] = { 0x00, 0x40, 0x80, 0x90, 0xD0 };
83 static const u8 data_low[5] = { 0x00, 0x01, 0x05, 0x06, 0x0A };
84 u16 tmp = b43_radio_read16(dev, 0x001E);
87 for (i = 0; i < 5; i++) {
88 for (j = 0; j < 5; j++) {
89 if (tmp == (data_high[i] << 4 | data_low[j])) {
90 b43_phy_write(dev, 0x0069,
91 (i - j) << 8 | 0x00C0);
98 static void aphy_channel_switch(struct b43_wldev *dev, unsigned int channel)
102 freq = channel2freq_a(channel);
104 r8 = b43_radio_read16(dev, 0x0008);
105 b43_write16(dev, 0x03F0, freq);
106 b43_radio_write16(dev, 0x0008, r8);
108 //TODO: write max channel TX power? to Radio 0x2D
109 tmp = b43_radio_read16(dev, 0x002E);
111 //TODO: OR tmp with the Power out estimation for this channel?
112 b43_radio_write16(dev, 0x002E, tmp);
114 if (freq >= 4920 && freq <= 5500) {
116 * r8 = (((freq * 15 * 0xE1FC780F) >> 32) / 29) & 0x0F;
117 * = (freq * 0.025862069
119 r8 = 3 * freq / 116; /* is equal to r8 = freq * 0.025862 */
121 b43_radio_write16(dev, 0x0007, (r8 << 4) | r8);
122 b43_radio_write16(dev, 0x0020, (r8 << 4) | r8);
123 b43_radio_write16(dev, 0x0021, (r8 << 4) | r8);
124 b43_radio_maskset(dev, 0x0022, 0x000F, (r8 << 4));
125 b43_radio_write16(dev, 0x002A, (r8 << 4));
126 b43_radio_write16(dev, 0x002B, (r8 << 4));
127 b43_radio_maskset(dev, 0x0008, 0x00F0, (r8 << 4));
128 b43_radio_maskset(dev, 0x0029, 0xFF0F, 0x00B0);
129 b43_radio_write16(dev, 0x0035, 0x00AA);
130 b43_radio_write16(dev, 0x0036, 0x0085);
131 b43_radio_maskset(dev, 0x003A, 0xFF20, freq_r3A_value(freq));
132 b43_radio_mask(dev, 0x003D, 0x00FF);
133 b43_radio_maskset(dev, 0x0081, 0xFF7F, 0x0080);
134 b43_radio_mask(dev, 0x0035, 0xFFEF);
135 b43_radio_maskset(dev, 0x0035, 0xFFEF, 0x0010);
136 b43_radio_set_tx_iq(dev);
137 //TODO: TSSI2dbm workaround
138 //FIXME b43_phy_xmitpower(dev);
141 static void b43_radio_init2060(struct b43_wldev *dev)
143 b43_radio_write16(dev, 0x0004, 0x00C0);
144 b43_radio_write16(dev, 0x0005, 0x0008);
145 b43_radio_write16(dev, 0x0009, 0x0040);
146 b43_radio_write16(dev, 0x0005, 0x00AA);
147 b43_radio_write16(dev, 0x0032, 0x008F);
148 b43_radio_write16(dev, 0x0006, 0x008F);
149 b43_radio_write16(dev, 0x0034, 0x008F);
150 b43_radio_write16(dev, 0x002C, 0x0007);
151 b43_radio_write16(dev, 0x0082, 0x0080);
152 b43_radio_write16(dev, 0x0080, 0x0000);
153 b43_radio_write16(dev, 0x003F, 0x00DA);
154 b43_radio_mask(dev, 0x0005, ~0x0008);
155 b43_radio_mask(dev, 0x0081, ~0x0010);
156 b43_radio_mask(dev, 0x0081, ~0x0020);
157 b43_radio_mask(dev, 0x0081, ~0x0020);
158 msleep(1); /* delay 400usec */
160 b43_radio_maskset(dev, 0x0081, ~0x0020, 0x0010);
161 msleep(1); /* delay 400usec */
163 b43_radio_maskset(dev, 0x0005, ~0x0008, 0x0008);
164 b43_radio_mask(dev, 0x0085, ~0x0010);
165 b43_radio_mask(dev, 0x0005, ~0x0008);
166 b43_radio_mask(dev, 0x0081, ~0x0040);
167 b43_radio_maskset(dev, 0x0081, ~0x0040, 0x0040);
168 b43_radio_write16(dev, 0x0005,
169 (b43_radio_read16(dev, 0x0081) & ~0x0008) | 0x0008);
170 b43_phy_write(dev, 0x0063, 0xDDC6);
171 b43_phy_write(dev, 0x0069, 0x07BE);
172 b43_phy_write(dev, 0x006A, 0x0000);
174 aphy_channel_switch(dev, dev->phy.ops->get_default_chan(dev));
179 static void b43_phy_rssiagc(struct b43_wldev *dev, u8 enable)
183 if (dev->phy.rev < 3) {
185 for (i = 0; i < B43_TAB_RSSIAGC1_SIZE; i++) {
186 b43_ofdmtab_write16(dev,
187 B43_OFDMTAB_LNAHPFGAIN1, i, 0xFFF8);
188 b43_ofdmtab_write16(dev,
189 B43_OFDMTAB_WRSSI, i, 0xFFF8);
192 for (i = 0; i < B43_TAB_RSSIAGC1_SIZE; i++) {
193 b43_ofdmtab_write16(dev,
194 B43_OFDMTAB_LNAHPFGAIN1, i, b43_tab_rssiagc1[i]);
195 b43_ofdmtab_write16(dev,
196 B43_OFDMTAB_WRSSI, i, b43_tab_rssiagc1[i]);
200 for (i = 0; i < B43_TAB_RSSIAGC1_SIZE; i++)
201 b43_ofdmtab_write16(dev,
202 B43_OFDMTAB_WRSSI, i, 0x0820);
204 for (i = 0; i < B43_TAB_RSSIAGC2_SIZE; i++)
205 b43_ofdmtab_write16(dev,
206 B43_OFDMTAB_WRSSI, i, b43_tab_rssiagc2[i]);
210 static void b43_phy_ww(struct b43_wldev *dev)
212 u16 b, curr_s, best_s = 0xFFFF;
215 b43_phy_mask(dev, B43_PHY_CRS0, ~B43_PHY_CRS0_EN);
216 b43_phy_set(dev, B43_PHY_OFDM(0x1B), 0x1000);
217 b43_phy_maskset(dev, B43_PHY_OFDM(0x82), 0xF0FF, 0x0300);
218 b43_radio_set(dev, 0x0009, 0x0080);
219 b43_radio_maskset(dev, 0x0012, 0xFFFC, 0x0002);
220 b43_wa_initgains(dev);
221 b43_phy_write(dev, B43_PHY_OFDM(0xBA), 0x3ED5);
222 b = b43_phy_read(dev, B43_PHY_PWRDOWN);
223 b43_phy_write(dev, B43_PHY_PWRDOWN, (b & 0xFFF8) | 0x0005);
224 b43_radio_set(dev, 0x0004, 0x0004);
225 for (i = 0x10; i <= 0x20; i++) {
226 b43_radio_write16(dev, 0x0013, i);
227 curr_s = b43_phy_read(dev, B43_PHY_OTABLEQ) & 0x00FF;
231 } else if (curr_s >= 0x0080)
232 curr_s = 0x0100 - curr_s;
236 b43_phy_write(dev, B43_PHY_PWRDOWN, b);
237 b43_radio_mask(dev, 0x0004, 0xFFFB);
238 b43_radio_write16(dev, 0x0013, best_s);
239 b43_ofdmtab_write16(dev, B43_OFDMTAB_AGC1_R1, 0, 0xFFEC);
240 b43_phy_write(dev, B43_PHY_OFDM(0xB7), 0x1E80);
241 b43_phy_write(dev, B43_PHY_OFDM(0xB6), 0x1C00);
242 b43_phy_write(dev, B43_PHY_OFDM(0xB5), 0x0EC0);
243 b43_phy_write(dev, B43_PHY_OFDM(0xB2), 0x00C0);
244 b43_phy_write(dev, B43_PHY_OFDM(0xB9), 0x1FFF);
245 b43_phy_maskset(dev, B43_PHY_OFDM(0xBB), 0xF000, 0x0053);
246 b43_phy_maskset(dev, B43_PHY_OFDM61, 0xFE1F, 0x0120);
247 b43_phy_maskset(dev, B43_PHY_OFDM(0x13), 0x0FFF, 0x3000);
248 b43_phy_maskset(dev, B43_PHY_OFDM(0x14), 0x0FFF, 0x3000);
249 b43_ofdmtab_write16(dev, B43_OFDMTAB_AGC1, 6, 0x0017);
250 for (i = 0; i < 6; i++)
251 b43_ofdmtab_write16(dev, B43_OFDMTAB_AGC1, i, 0x000F);
252 b43_ofdmtab_write16(dev, B43_OFDMTAB_AGC1, 0x0D, 0x000E);
253 b43_ofdmtab_write16(dev, B43_OFDMTAB_AGC1, 0x0E, 0x0011);
254 b43_ofdmtab_write16(dev, B43_OFDMTAB_AGC1, 0x0F, 0x0013);
255 b43_phy_write(dev, B43_PHY_OFDM(0x33), 0x5030);
256 b43_phy_set(dev, B43_PHY_CRS0, B43_PHY_CRS0_EN);
259 static void hardware_pctl_init_aphy(struct b43_wldev *dev)
264 void b43_phy_inita(struct b43_wldev *dev)
266 struct ssb_bus *bus = dev->dev->bus;
267 struct b43_phy *phy = &dev->phy;
269 /* This lowlevel A-PHY init is also called from G-PHY init.
270 * So we must not access phy->a, if called from G-PHY code.
272 B43_WARN_ON((phy->type != B43_PHYTYPE_A) &&
273 (phy->type != B43_PHYTYPE_G));
278 if (phy->type == B43_PHYTYPE_A)
279 b43_phy_mask(dev, B43_PHY_OFDM(0x1B), ~0x1000);
280 if (b43_phy_read(dev, B43_PHY_ENCORE) & B43_PHY_ENCORE_EN)
281 b43_phy_set(dev, B43_PHY_ENCORE, 0x0010);
283 b43_phy_mask(dev, B43_PHY_ENCORE, ~0x1010);
288 if (phy->type == B43_PHYTYPE_A) {
289 if (phy->gmode && (phy->rev < 3))
290 b43_phy_set(dev, 0x0034, 0x0001);
291 b43_phy_rssiagc(dev, 0);
293 b43_phy_set(dev, B43_PHY_CRS0, B43_PHY_CRS0_EN);
295 b43_radio_init2060(dev);
297 if ((bus->boardinfo.vendor == SSB_BOARDVENDOR_BCM) &&
298 ((bus->boardinfo.type == SSB_BOARD_BU4306) ||
299 (bus->boardinfo.type == SSB_BOARD_BU4309))) {
306 hardware_pctl_init_aphy(dev);
308 //TODO: radar detection
311 if ((phy->type == B43_PHYTYPE_G) &&
312 (dev->dev->bus->sprom.boardflags_lo & B43_BFL_PACTRL)) {
313 b43_phy_maskset(dev, B43_PHY_OFDM(0x6E), 0xE000, 0x3CF);
317 /* Initialise the TSSI->dBm lookup table */
318 static int b43_aphy_init_tssi2dbm_table(struct b43_wldev *dev)
320 struct b43_phy *phy = &dev->phy;
321 struct b43_phy_a *aphy = phy->a;
322 s16 pab0, pab1, pab2;
324 pab0 = (s16) (dev->dev->bus->sprom.pa1b0);
325 pab1 = (s16) (dev->dev->bus->sprom.pa1b1);
326 pab2 = (s16) (dev->dev->bus->sprom.pa1b2);
328 if (pab0 != 0 && pab1 != 0 && pab2 != 0 &&
329 pab0 != -1 && pab1 != -1 && pab2 != -1) {
330 /* The pabX values are set in SPROM. Use them. */
331 if ((s8) dev->dev->bus->sprom.itssi_a != 0 &&
332 (s8) dev->dev->bus->sprom.itssi_a != -1)
333 aphy->tgt_idle_tssi =
334 (s8) (dev->dev->bus->sprom.itssi_a);
336 aphy->tgt_idle_tssi = 62;
337 aphy->tssi2dbm = b43_generate_dyn_tssi2dbm_tab(dev, pab0,
342 /* pabX values not set in SPROM,
343 * but APHY needs a generated table. */
344 aphy->tssi2dbm = NULL;
345 b43err(dev->wl, "Could not generate tssi2dBm "
346 "table (wrong SPROM info)!\n");
353 static int b43_aphy_op_allocate(struct b43_wldev *dev)
355 struct b43_phy_a *aphy;
358 aphy = kzalloc(sizeof(*aphy), GFP_KERNEL);
363 err = b43_aphy_init_tssi2dbm_table(dev);
376 static void b43_aphy_op_prepare_structs(struct b43_wldev *dev)
378 struct b43_phy *phy = &dev->phy;
379 struct b43_phy_a *aphy = phy->a;
380 const void *tssi2dbm;
383 /* tssi2dbm table is constant, so it is initialized at alloc time.
384 * Save a copy of the pointer. */
385 tssi2dbm = aphy->tssi2dbm;
386 tgt_idle_tssi = aphy->tgt_idle_tssi;
388 /* Zero out the whole PHY structure. */
389 memset(aphy, 0, sizeof(*aphy));
391 aphy->tssi2dbm = tssi2dbm;
392 aphy->tgt_idle_tssi = tgt_idle_tssi;
394 //TODO init struct b43_phy_a
398 static void b43_aphy_op_free(struct b43_wldev *dev)
400 struct b43_phy *phy = &dev->phy;
401 struct b43_phy_a *aphy = phy->a;
403 kfree(aphy->tssi2dbm);
404 aphy->tssi2dbm = NULL;
410 static int b43_aphy_op_init(struct b43_wldev *dev)
417 static inline u16 adjust_phyreg(struct b43_wldev *dev, u16 offset)
419 /* OFDM registers are base-registers for the A-PHY. */
420 if ((offset & B43_PHYROUTE) == B43_PHYROUTE_OFDM_GPHY) {
421 offset &= ~B43_PHYROUTE;
422 offset |= B43_PHYROUTE_BASE;
426 if ((offset & B43_PHYROUTE) == B43_PHYROUTE_EXT_GPHY) {
427 /* Ext-G registers are only available on G-PHYs */
428 b43err(dev->wl, "Invalid EXT-G PHY access at "
429 "0x%04X on A-PHY\n", offset);
432 if ((offset & B43_PHYROUTE) == B43_PHYROUTE_N_BMODE) {
433 /* N-BMODE registers are only available on N-PHYs */
434 b43err(dev->wl, "Invalid N-BMODE PHY access at "
435 "0x%04X on A-PHY\n", offset);
438 #endif /* B43_DEBUG */
443 static u16 b43_aphy_op_read(struct b43_wldev *dev, u16 reg)
445 reg = adjust_phyreg(dev, reg);
446 b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
447 return b43_read16(dev, B43_MMIO_PHY_DATA);
450 static void b43_aphy_op_write(struct b43_wldev *dev, u16 reg, u16 value)
452 reg = adjust_phyreg(dev, reg);
453 b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
454 b43_write16(dev, B43_MMIO_PHY_DATA, value);
457 static u16 b43_aphy_op_radio_read(struct b43_wldev *dev, u16 reg)
459 /* Register 1 is a 32-bit register. */
460 B43_WARN_ON(reg == 1);
461 /* A-PHY needs 0x40 for read access */
464 b43_write16(dev, B43_MMIO_RADIO_CONTROL, reg);
465 return b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
468 static void b43_aphy_op_radio_write(struct b43_wldev *dev, u16 reg, u16 value)
470 /* Register 1 is a 32-bit register. */
471 B43_WARN_ON(reg == 1);
473 b43_write16(dev, B43_MMIO_RADIO_CONTROL, reg);
474 b43_write16(dev, B43_MMIO_RADIO_DATA_LOW, value);
477 static bool b43_aphy_op_supports_hwpctl(struct b43_wldev *dev)
479 return (dev->phy.rev >= 5);
482 static void b43_aphy_op_software_rfkill(struct b43_wldev *dev,
483 enum rfkill_state state)
485 struct b43_phy *phy = &dev->phy;
487 if (state == RFKILL_STATE_UNBLOCKED) {
490 b43_radio_write16(dev, 0x0004, 0x00C0);
491 b43_radio_write16(dev, 0x0005, 0x0008);
492 b43_phy_mask(dev, 0x0010, 0xFFF7);
493 b43_phy_mask(dev, 0x0011, 0xFFF7);
494 b43_radio_init2060(dev);
496 b43_radio_write16(dev, 0x0004, 0x00FF);
497 b43_radio_write16(dev, 0x0005, 0x00FB);
498 b43_phy_set(dev, 0x0010, 0x0008);
499 b43_phy_set(dev, 0x0011, 0x0008);
503 static int b43_aphy_op_switch_channel(struct b43_wldev *dev,
504 unsigned int new_channel)
506 if (new_channel > 200)
508 aphy_channel_switch(dev, new_channel);
513 static unsigned int b43_aphy_op_get_default_chan(struct b43_wldev *dev)
515 return 36; /* Default to channel 36 */
518 static void b43_aphy_op_set_rx_antenna(struct b43_wldev *dev, int antenna)
520 struct b43_phy *phy = &dev->phy;
525 if (antenna == B43_ANTENNA_AUTO0 || antenna == B43_ANTENNA_AUTO1)
528 hf = b43_hf_read(dev);
529 hf &= ~B43_HF_ANTDIVHELP;
530 b43_hf_write(dev, hf);
532 tmp = b43_phy_read(dev, B43_PHY_BBANDCFG);
533 tmp &= ~B43_PHY_BBANDCFG_RXANT;
534 tmp |= (autodiv ? B43_ANTENNA_AUTO0 : antenna)
535 << B43_PHY_BBANDCFG_RXANT_SHIFT;
536 b43_phy_write(dev, B43_PHY_BBANDCFG, tmp);
539 tmp = b43_phy_read(dev, B43_PHY_ANTDWELL);
540 if (antenna == B43_ANTENNA_AUTO0)
541 tmp &= ~B43_PHY_ANTDWELL_AUTODIV1;
543 tmp |= B43_PHY_ANTDWELL_AUTODIV1;
544 b43_phy_write(dev, B43_PHY_ANTDWELL, tmp);
547 tmp = b43_phy_read(dev, B43_PHY_ANTDWELL);
548 tmp = (tmp & 0xFF00) | 0x24;
549 b43_phy_write(dev, B43_PHY_ANTDWELL, tmp);
551 tmp = b43_phy_read(dev, B43_PHY_OFDM61);
553 b43_phy_write(dev, B43_PHY_OFDM61, tmp);
554 if (phy->analog == 3) {
555 b43_phy_write(dev, B43_PHY_CLIPPWRDOWNT,
557 b43_phy_write(dev, B43_PHY_ADIVRELATED,
560 b43_phy_write(dev, B43_PHY_CLIPPWRDOWNT,
564 B43_PHY_ADIVRELATED);
565 tmp = (tmp & 0xFF00) | 8;
566 b43_phy_write(dev, B43_PHY_ADIVRELATED,
571 hf |= B43_HF_ANTDIVHELP;
572 b43_hf_write(dev, hf);
575 static void b43_aphy_op_adjust_txpower(struct b43_wldev *dev)
579 static enum b43_txpwr_result b43_aphy_op_recalc_txpower(struct b43_wldev *dev,
582 return B43_TXPWR_RES_DONE;
585 static void b43_aphy_op_pwork_15sec(struct b43_wldev *dev)
589 static void b43_aphy_op_pwork_60sec(struct b43_wldev *dev)
593 const struct b43_phy_operations b43_phyops_a = {
594 .allocate = b43_aphy_op_allocate,
595 .free = b43_aphy_op_free,
596 .prepare_structs = b43_aphy_op_prepare_structs,
597 .init = b43_aphy_op_init,
598 .phy_read = b43_aphy_op_read,
599 .phy_write = b43_aphy_op_write,
600 .radio_read = b43_aphy_op_radio_read,
601 .radio_write = b43_aphy_op_radio_write,
602 .supports_hwpctl = b43_aphy_op_supports_hwpctl,
603 .software_rfkill = b43_aphy_op_software_rfkill,
604 .switch_analog = b43_phyop_switch_analog_generic,
605 .switch_channel = b43_aphy_op_switch_channel,
606 .get_default_chan = b43_aphy_op_get_default_chan,
607 .set_rx_antenna = b43_aphy_op_set_rx_antenna,
608 .recalc_txpower = b43_aphy_op_recalc_txpower,
609 .adjust_txpower = b43_aphy_op_adjust_txpower,
610 .pwork_15sec = b43_aphy_op_pwork_15sec,
611 .pwork_60sec = b43_aphy_op_pwork_60sec,