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 <m@bues.ch>
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 b43_phy *phy = &dev->phy;
270 /* This lowlevel A-PHY init is also called from G-PHY init.
271 * So we must not access phy->a, if called from G-PHY code.
273 B43_WARN_ON((phy->type != B43_PHYTYPE_A) &&
274 (phy->type != B43_PHYTYPE_G));
279 if (phy->type == B43_PHYTYPE_A)
280 b43_phy_mask(dev, B43_PHY_OFDM(0x1B), ~0x1000);
281 if (b43_phy_read(dev, B43_PHY_ENCORE) & B43_PHY_ENCORE_EN)
282 b43_phy_set(dev, B43_PHY_ENCORE, 0x0010);
284 b43_phy_mask(dev, B43_PHY_ENCORE, ~0x1010);
289 if (phy->type == B43_PHYTYPE_A) {
290 if (phy->gmode && (phy->rev < 3))
291 b43_phy_set(dev, 0x0034, 0x0001);
292 b43_phy_rssiagc(dev, 0);
294 b43_phy_set(dev, B43_PHY_CRS0, B43_PHY_CRS0_EN);
296 b43_radio_init2060(dev);
298 if ((dev->dev->board_vendor == SSB_BOARDVENDOR_BCM) &&
299 ((dev->dev->board_type == SSB_BOARD_BU4306) ||
300 (dev->dev->board_type == SSB_BOARD_BU4309))) {
307 hardware_pctl_init_aphy(dev);
309 //TODO: radar detection
312 if ((phy->type == B43_PHYTYPE_G) &&
313 (dev->dev->bus_sprom->boardflags_lo & B43_BFL_PACTRL)) {
314 b43_phy_maskset(dev, B43_PHY_OFDM(0x6E), 0xE000, 0x3CF);
318 /* Initialise the TSSI->dBm lookup table */
319 static int b43_aphy_init_tssi2dbm_table(struct b43_wldev *dev)
321 struct b43_phy *phy = &dev->phy;
322 struct b43_phy_a *aphy = phy->a;
323 s16 pab0, pab1, pab2;
325 pab0 = (s16) (dev->dev->bus_sprom->pa1b0);
326 pab1 = (s16) (dev->dev->bus_sprom->pa1b1);
327 pab2 = (s16) (dev->dev->bus_sprom->pa1b2);
329 if (pab0 != 0 && pab1 != 0 && pab2 != 0 &&
330 pab0 != -1 && pab1 != -1 && pab2 != -1) {
331 /* The pabX values are set in SPROM. Use them. */
332 if ((s8) dev->dev->bus_sprom->itssi_a != 0 &&
333 (s8) dev->dev->bus_sprom->itssi_a != -1)
334 aphy->tgt_idle_tssi =
335 (s8) (dev->dev->bus_sprom->itssi_a);
337 aphy->tgt_idle_tssi = 62;
338 aphy->tssi2dbm = b43_generate_dyn_tssi2dbm_tab(dev, pab0,
343 /* pabX values not set in SPROM,
344 * but APHY needs a generated table. */
345 aphy->tssi2dbm = NULL;
346 b43err(dev->wl, "Could not generate tssi2dBm "
347 "table (wrong SPROM info)!\n");
354 static int b43_aphy_op_allocate(struct b43_wldev *dev)
356 struct b43_phy_a *aphy;
359 aphy = kzalloc(sizeof(*aphy), GFP_KERNEL);
364 err = b43_aphy_init_tssi2dbm_table(dev);
377 static void b43_aphy_op_prepare_structs(struct b43_wldev *dev)
379 struct b43_phy *phy = &dev->phy;
380 struct b43_phy_a *aphy = phy->a;
381 const void *tssi2dbm;
384 /* tssi2dbm table is constant, so it is initialized at alloc time.
385 * Save a copy of the pointer. */
386 tssi2dbm = aphy->tssi2dbm;
387 tgt_idle_tssi = aphy->tgt_idle_tssi;
389 /* Zero out the whole PHY structure. */
390 memset(aphy, 0, sizeof(*aphy));
392 aphy->tssi2dbm = tssi2dbm;
393 aphy->tgt_idle_tssi = tgt_idle_tssi;
395 //TODO init struct b43_phy_a
399 static void b43_aphy_op_free(struct b43_wldev *dev)
401 struct b43_phy *phy = &dev->phy;
402 struct b43_phy_a *aphy = phy->a;
404 kfree(aphy->tssi2dbm);
405 aphy->tssi2dbm = NULL;
411 static int b43_aphy_op_init(struct b43_wldev *dev)
418 static inline u16 adjust_phyreg(struct b43_wldev *dev, u16 offset)
420 /* OFDM registers are base-registers for the A-PHY. */
421 if ((offset & B43_PHYROUTE) == B43_PHYROUTE_OFDM_GPHY) {
422 offset &= ~B43_PHYROUTE;
423 offset |= B43_PHYROUTE_BASE;
427 if ((offset & B43_PHYROUTE) == B43_PHYROUTE_EXT_GPHY) {
428 /* Ext-G registers are only available on G-PHYs */
429 b43err(dev->wl, "Invalid EXT-G PHY access at "
430 "0x%04X on A-PHY\n", offset);
433 if ((offset & B43_PHYROUTE) == B43_PHYROUTE_N_BMODE) {
434 /* N-BMODE registers are only available on N-PHYs */
435 b43err(dev->wl, "Invalid N-BMODE PHY access at "
436 "0x%04X on A-PHY\n", offset);
439 #endif /* B43_DEBUG */
444 static u16 b43_aphy_op_read(struct b43_wldev *dev, u16 reg)
446 reg = adjust_phyreg(dev, reg);
447 b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
448 return b43_read16(dev, B43_MMIO_PHY_DATA);
451 static void b43_aphy_op_write(struct b43_wldev *dev, u16 reg, u16 value)
453 reg = adjust_phyreg(dev, reg);
454 b43_write16(dev, B43_MMIO_PHY_CONTROL, reg);
455 b43_write16(dev, B43_MMIO_PHY_DATA, value);
458 static u16 b43_aphy_op_radio_read(struct b43_wldev *dev, u16 reg)
460 /* Register 1 is a 32-bit register. */
461 B43_WARN_ON(reg == 1);
462 /* A-PHY needs 0x40 for read access */
465 b43_write16(dev, B43_MMIO_RADIO_CONTROL, reg);
466 return b43_read16(dev, B43_MMIO_RADIO_DATA_LOW);
469 static void b43_aphy_op_radio_write(struct b43_wldev *dev, u16 reg, u16 value)
471 /* Register 1 is a 32-bit register. */
472 B43_WARN_ON(reg == 1);
474 b43_write16(dev, B43_MMIO_RADIO_CONTROL, reg);
475 b43_write16(dev, B43_MMIO_RADIO_DATA_LOW, value);
478 static bool b43_aphy_op_supports_hwpctl(struct b43_wldev *dev)
480 return (dev->phy.rev >= 5);
483 static void b43_aphy_op_software_rfkill(struct b43_wldev *dev,
486 struct b43_phy *phy = &dev->phy;
491 b43_radio_write16(dev, 0x0004, 0x00C0);
492 b43_radio_write16(dev, 0x0005, 0x0008);
493 b43_phy_mask(dev, 0x0010, 0xFFF7);
494 b43_phy_mask(dev, 0x0011, 0xFFF7);
495 b43_radio_init2060(dev);
497 b43_radio_write16(dev, 0x0004, 0x00FF);
498 b43_radio_write16(dev, 0x0005, 0x00FB);
499 b43_phy_set(dev, 0x0010, 0x0008);
500 b43_phy_set(dev, 0x0011, 0x0008);
504 static int b43_aphy_op_switch_channel(struct b43_wldev *dev,
505 unsigned int new_channel)
507 if (new_channel > 200)
509 aphy_channel_switch(dev, new_channel);
514 static unsigned int b43_aphy_op_get_default_chan(struct b43_wldev *dev)
516 return 36; /* Default to channel 36 */
519 static void b43_aphy_op_set_rx_antenna(struct b43_wldev *dev, int antenna)
521 struct b43_phy *phy = &dev->phy;
525 if (antenna == B43_ANTENNA_AUTO0 || antenna == B43_ANTENNA_AUTO1)
528 b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_ANTDIVHELP);
530 b43_phy_maskset(dev, B43_PHY_BBANDCFG, ~B43_PHY_BBANDCFG_RXANT,
531 (autodiv ? B43_ANTENNA_AUTO1 : antenna) <<
532 B43_PHY_BBANDCFG_RXANT_SHIFT);
535 tmp = b43_phy_read(dev, B43_PHY_ANTDWELL);
536 if (antenna == B43_ANTENNA_AUTO1)
537 tmp &= ~B43_PHY_ANTDWELL_AUTODIV1;
539 tmp |= B43_PHY_ANTDWELL_AUTODIV1;
540 b43_phy_write(dev, B43_PHY_ANTDWELL, tmp);
543 b43_phy_maskset(dev, B43_PHY_ANTDWELL, 0xFF00, 0x24);
545 b43_phy_set(dev, B43_PHY_OFDM61, 0x10);
547 b43_phy_write(dev, B43_PHY_CLIPPWRDOWNT, 0x1D);
548 b43_phy_write(dev, B43_PHY_ADIVRELATED, 8);
550 b43_phy_write(dev, B43_PHY_CLIPPWRDOWNT, 0x3A);
551 b43_phy_maskset(dev, B43_PHY_ADIVRELATED, 0xFF00, 8);
555 b43_hf_write(dev, b43_hf_read(dev) | B43_HF_ANTDIVHELP);
558 static void b43_aphy_op_adjust_txpower(struct b43_wldev *dev)
562 static enum b43_txpwr_result b43_aphy_op_recalc_txpower(struct b43_wldev *dev,
565 return B43_TXPWR_RES_DONE;
568 static void b43_aphy_op_pwork_15sec(struct b43_wldev *dev)
572 static void b43_aphy_op_pwork_60sec(struct b43_wldev *dev)
576 const struct b43_phy_operations b43_phyops_a = {
577 .allocate = b43_aphy_op_allocate,
578 .free = b43_aphy_op_free,
579 .prepare_structs = b43_aphy_op_prepare_structs,
580 .init = b43_aphy_op_init,
581 .phy_read = b43_aphy_op_read,
582 .phy_write = b43_aphy_op_write,
583 .radio_read = b43_aphy_op_radio_read,
584 .radio_write = b43_aphy_op_radio_write,
585 .supports_hwpctl = b43_aphy_op_supports_hwpctl,
586 .software_rfkill = b43_aphy_op_software_rfkill,
587 .switch_analog = b43_phyop_switch_analog_generic,
588 .switch_channel = b43_aphy_op_switch_channel,
589 .get_default_chan = b43_aphy_op_get_default_chan,
590 .set_rx_antenna = b43_aphy_op_set_rx_antenna,
591 .recalc_txpower = b43_aphy_op_recalc_txpower,
592 .adjust_txpower = b43_aphy_op_adjust_txpower,
593 .pwork_15sec = b43_aphy_op_pwork_15sec,
594 .pwork_60sec = b43_aphy_op_pwork_60sec,