1 /*
2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Sepherosa Ziehau <sepherosa@gmail.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $DragonFly: src/sys/dev/netif/bwi/bwirf.c,v 1.9 2008/08/21 12:19:33 swildner Exp $
35 */
36
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
39
40 #include "opt_inet.h"
41 #include "opt_bwi.h"
42 #include "opt_wlan.h"
43
44 #include <sys/param.h>
45 #include <sys/endian.h>
46 #include <sys/kernel.h>
47 #include <sys/bus.h>
48 #include <sys/malloc.h>
49 #include <sys/proc.h>
50 #include <sys/rman.h>
51 #include <sys/socket.h>
52 #include <sys/sockio.h>
53 #include <sys/sysctl.h>
54 #include <sys/systm.h>
55
56 #include <net/if.h>
57 #include <net/if_var.h>
58 #include <net/if_dl.h>
59 #include <net/if_media.h>
60 #include <net/if_types.h>
61 #include <net/if_arp.h>
62 #include <net/ethernet.h>
63 #include <net/if_llc.h>
64
65 #include <net80211/ieee80211_var.h>
66 #include <net80211/ieee80211_radiotap.h>
67 #include <net80211/ieee80211_amrr.h>
68
69 #include <machine/bus.h>
70
71 #include <dev/bwi/bitops.h>
72 #include <dev/bwi/if_bwireg.h>
73 #include <dev/bwi/if_bwivar.h>
74 #include <dev/bwi/bwimac.h>
75 #include <dev/bwi/bwirf.h>
76 #include <dev/bwi/bwiphy.h>
77
78 #define RF_LO_WRITE(mac, lo) bwi_rf_lo_write((mac), (lo))
79
80 #define BWI_RF_2GHZ_CHAN(chan) \
81 (ieee80211_ieee2mhz((chan), IEEE80211_CHAN_2GHZ) - 2400)
82
83 #define BWI_DEFAULT_IDLE_TSSI 52
84
85 struct rf_saveregs {
86 uint16_t phy_01;
87 uint16_t phy_03;
88 uint16_t phy_0a;
89 uint16_t phy_15;
90 uint16_t phy_2a;
91 uint16_t phy_30;
92 uint16_t phy_35;
93 uint16_t phy_60;
94 uint16_t phy_429;
95 uint16_t phy_802;
96 uint16_t phy_811;
97 uint16_t phy_812;
98 uint16_t phy_814;
99 uint16_t phy_815;
100
101 uint16_t rf_43;
102 uint16_t rf_52;
103 uint16_t rf_7a;
104 };
105
106 #define SAVE_RF_REG(mac, regs, n) (regs)->rf_##n = RF_READ((mac), 0x##n)
107 #define RESTORE_RF_REG(mac, regs, n) RF_WRITE((mac), 0x##n, (regs)->rf_##n)
108
109 #define SAVE_PHY_REG(mac, regs, n) (regs)->phy_##n = PHY_READ((mac), 0x##n)
110 #define RESTORE_PHY_REG(mac, regs, n) PHY_WRITE((mac), 0x##n, (regs)->phy_##n)
111
112 static int bwi_rf_calc_txpower(int8_t *, uint8_t, const int16_t[]);
113 static void bwi_rf_work_around(struct bwi_mac *, u_int);
114 static int bwi_rf_gain_max_reached(struct bwi_mac *, int);
115 static uint16_t bwi_rf_calibval(struct bwi_mac *);
116 static uint16_t bwi_rf_get_tp_ctrl2(struct bwi_mac *);
117
118 static void bwi_rf_lo_update_11b(struct bwi_mac *);
119 static uint16_t bwi_rf_lo_measure_11b(struct bwi_mac *);
120
121 static void bwi_rf_lo_update_11g(struct bwi_mac *);
122 static uint32_t bwi_rf_lo_devi_measure(struct bwi_mac *, uint16_t);
123 static void bwi_rf_lo_measure_11g(struct bwi_mac *,
124 const struct bwi_rf_lo *, struct bwi_rf_lo *, uint8_t);
125 static uint8_t _bwi_rf_lo_update_11g(struct bwi_mac *, uint16_t);
126 static void bwi_rf_lo_write(struct bwi_mac *, const struct bwi_rf_lo *);
127
128 static void bwi_rf_set_nrssi_ofs_11g(struct bwi_mac *);
129 static void bwi_rf_calc_nrssi_slope_11b(struct bwi_mac *);
130 static void bwi_rf_calc_nrssi_slope_11g(struct bwi_mac *);
131 static void bwi_rf_set_nrssi_thr_11b(struct bwi_mac *);
132 static void bwi_rf_set_nrssi_thr_11g(struct bwi_mac *);
133
134 static void bwi_rf_init_sw_nrssi_table(struct bwi_mac *);
135
136 static int bwi_rf_calc_rssi_bcm2050(struct bwi_mac *,
137 const struct bwi_rxbuf_hdr *);
138 static int bwi_rf_calc_rssi_bcm2053(struct bwi_mac *,
139 const struct bwi_rxbuf_hdr *);
140 static int bwi_rf_calc_rssi_bcm2060(struct bwi_mac *,
141 const struct bwi_rxbuf_hdr *);
142 static int bwi_rf_calc_noise_bcm2050(struct bwi_mac *);
143 static int bwi_rf_calc_noise_bcm2053(struct bwi_mac *);
144 static int bwi_rf_calc_noise_bcm2060(struct bwi_mac *);
145
146 static void bwi_rf_on_11a(struct bwi_mac *);
147 static void bwi_rf_on_11bg(struct bwi_mac *);
148
149 static void bwi_rf_off_11a(struct bwi_mac *);
150 static void bwi_rf_off_11bg(struct bwi_mac *);
151 static void bwi_rf_off_11g_rev5(struct bwi_mac *);
152
153 static const int8_t bwi_txpower_map_11b[BWI_TSSI_MAX] =
154 { BWI_TXPOWER_MAP_11B };
155 static const int8_t bwi_txpower_map_11g[BWI_TSSI_MAX] =
156 { BWI_TXPOWER_MAP_11G };
157
158 static __inline int16_t
bwi_nrssi_11g(struct bwi_mac * mac)159 bwi_nrssi_11g(struct bwi_mac *mac)
160 {
161 int16_t val;
162
163 #define NRSSI_11G_MASK __BITS(13, 8)
164
165 val = (int16_t)__SHIFTOUT(PHY_READ(mac, 0x47f), NRSSI_11G_MASK);
166 if (val >= 32)
167 val -= 64;
168 return val;
169
170 #undef NRSSI_11G_MASK
171 }
172
173 static __inline struct bwi_rf_lo *
bwi_get_rf_lo(struct bwi_mac * mac,uint16_t rf_atten,uint16_t bbp_atten)174 bwi_get_rf_lo(struct bwi_mac *mac, uint16_t rf_atten, uint16_t bbp_atten)
175 {
176 int n;
177
178 n = rf_atten + (14 * (bbp_atten / 2));
179 KASSERT(n < BWI_RFLO_MAX, ("n %d", n));
180
181 return &mac->mac_rf.rf_lo[n];
182 }
183
184 static __inline int
bwi_rf_lo_isused(struct bwi_mac * mac,const struct bwi_rf_lo * lo)185 bwi_rf_lo_isused(struct bwi_mac *mac, const struct bwi_rf_lo *lo)
186 {
187 struct bwi_rf *rf = &mac->mac_rf;
188 int idx;
189
190 idx = lo - rf->rf_lo;
191 KASSERT(idx >= 0 && idx < BWI_RFLO_MAX, ("idx %d", idx));
192
193 return isset(rf->rf_lo_used, idx);
194 }
195
196 void
bwi_rf_write(struct bwi_mac * mac,uint16_t ctrl,uint16_t data)197 bwi_rf_write(struct bwi_mac *mac, uint16_t ctrl, uint16_t data)
198 {
199 struct bwi_softc *sc = mac->mac_sc;
200
201 CSR_WRITE_2(sc, BWI_RF_CTRL, ctrl);
202 CSR_WRITE_2(sc, BWI_RF_DATA_LO, data);
203 }
204
205 uint16_t
bwi_rf_read(struct bwi_mac * mac,uint16_t ctrl)206 bwi_rf_read(struct bwi_mac *mac, uint16_t ctrl)
207 {
208 struct bwi_rf *rf = &mac->mac_rf;
209 struct bwi_softc *sc = mac->mac_sc;
210
211 ctrl |= rf->rf_ctrl_rd;
212 if (rf->rf_ctrl_adj) {
213 /* XXX */
214 if (ctrl < 0x70)
215 ctrl += 0x80;
216 else if (ctrl < 0x80)
217 ctrl += 0x70;
218 }
219
220 CSR_WRITE_2(sc, BWI_RF_CTRL, ctrl);
221 return CSR_READ_2(sc, BWI_RF_DATA_LO);
222 }
223
224 int
bwi_rf_attach(struct bwi_mac * mac)225 bwi_rf_attach(struct bwi_mac *mac)
226 {
227 struct bwi_softc *sc = mac->mac_sc;
228 struct bwi_phy *phy = &mac->mac_phy;
229 struct bwi_rf *rf = &mac->mac_rf;
230 uint16_t type, manu;
231 uint8_t rev;
232
233 /*
234 * Get RF manufacture/type/revision
235 */
236 if (sc->sc_bbp_id == BWI_BBPID_BCM4317) {
237 /*
238 * Fake a BCM2050 RF
239 */
240 manu = BWI_RF_MANUFACT_BCM;
241 type = BWI_RF_T_BCM2050;
242 if (sc->sc_bbp_rev == 0)
243 rev = 3;
244 else if (sc->sc_bbp_rev == 1)
245 rev = 4;
246 else
247 rev = 5;
248 } else {
249 uint32_t val;
250
251 CSR_WRITE_2(sc, BWI_RF_CTRL, BWI_RF_CTRL_RFINFO);
252 val = CSR_READ_2(sc, BWI_RF_DATA_HI);
253 val <<= 16;
254
255 CSR_WRITE_2(sc, BWI_RF_CTRL, BWI_RF_CTRL_RFINFO);
256 val |= CSR_READ_2(sc, BWI_RF_DATA_LO);
257
258 manu = __SHIFTOUT(val, BWI_RFINFO_MANUFACT_MASK);
259 type = __SHIFTOUT(val, BWI_RFINFO_TYPE_MASK);
260 rev = __SHIFTOUT(val, BWI_RFINFO_REV_MASK);
261 }
262 device_printf(sc->sc_dev, "RF: manu 0x%03x, type 0x%04x, rev %u\n",
263 manu, type, rev);
264
265 /*
266 * Verify whether the RF is supported
267 */
268 rf->rf_ctrl_rd = 0;
269 rf->rf_ctrl_adj = 0;
270 switch (phy->phy_mode) {
271 case IEEE80211_MODE_11A:
272 if (manu != BWI_RF_MANUFACT_BCM ||
273 type != BWI_RF_T_BCM2060 ||
274 rev != 1) {
275 device_printf(sc->sc_dev, "only BCM2060 rev 1 RF "
276 "is supported for 11A PHY\n");
277 return ENXIO;
278 }
279 rf->rf_ctrl_rd = BWI_RF_CTRL_RD_11A;
280 rf->rf_on = bwi_rf_on_11a;
281 rf->rf_off = bwi_rf_off_11a;
282 rf->rf_calc_rssi = bwi_rf_calc_rssi_bcm2060;
283 rf->rf_calc_noise = bwi_rf_calc_noise_bcm2060;
284 break;
285 case IEEE80211_MODE_11B:
286 if (type == BWI_RF_T_BCM2050) {
287 rf->rf_ctrl_rd = BWI_RF_CTRL_RD_11BG;
288 rf->rf_calc_rssi = bwi_rf_calc_rssi_bcm2050;
289 rf->rf_calc_noise = bwi_rf_calc_noise_bcm2050;
290 } else if (type == BWI_RF_T_BCM2053) {
291 rf->rf_ctrl_adj = 1;
292 rf->rf_calc_rssi = bwi_rf_calc_rssi_bcm2053;
293 rf->rf_calc_noise = bwi_rf_calc_noise_bcm2053;
294 } else {
295 device_printf(sc->sc_dev, "only BCM2050/BCM2053 RF "
296 "is supported for 11B PHY\n");
297 return ENXIO;
298 }
299 rf->rf_on = bwi_rf_on_11bg;
300 rf->rf_off = bwi_rf_off_11bg;
301 rf->rf_calc_nrssi_slope = bwi_rf_calc_nrssi_slope_11b;
302 rf->rf_set_nrssi_thr = bwi_rf_set_nrssi_thr_11b;
303 if (phy->phy_rev == 6)
304 rf->rf_lo_update = bwi_rf_lo_update_11g;
305 else
306 rf->rf_lo_update = bwi_rf_lo_update_11b;
307 break;
308 case IEEE80211_MODE_11G:
309 if (type != BWI_RF_T_BCM2050) {
310 device_printf(sc->sc_dev, "only BCM2050 RF "
311 "is supported for 11G PHY\n");
312 return ENXIO;
313 }
314 rf->rf_ctrl_rd = BWI_RF_CTRL_RD_11BG;
315 rf->rf_on = bwi_rf_on_11bg;
316 if (mac->mac_rev >= 5)
317 rf->rf_off = bwi_rf_off_11g_rev5;
318 else
319 rf->rf_off = bwi_rf_off_11bg;
320 rf->rf_calc_nrssi_slope = bwi_rf_calc_nrssi_slope_11g;
321 rf->rf_set_nrssi_thr = bwi_rf_set_nrssi_thr_11g;
322 rf->rf_calc_rssi = bwi_rf_calc_rssi_bcm2050;
323 rf->rf_calc_noise = bwi_rf_calc_noise_bcm2050;
324 rf->rf_lo_update = bwi_rf_lo_update_11g;
325 break;
326 default:
327 device_printf(sc->sc_dev, "unsupported PHY mode\n");
328 return ENXIO;
329 }
330
331 rf->rf_type = type;
332 rf->rf_rev = rev;
333 rf->rf_manu = manu;
334 rf->rf_curchan = IEEE80211_CHAN_ANY;
335 rf->rf_ant_mode = BWI_ANT_MODE_AUTO;
336 return 0;
337 }
338
339 void
bwi_rf_set_chan(struct bwi_mac * mac,u_int chan,int work_around)340 bwi_rf_set_chan(struct bwi_mac *mac, u_int chan, int work_around)
341 {
342 struct bwi_softc *sc = mac->mac_sc;
343
344 if (chan == IEEE80211_CHAN_ANY)
345 return;
346
347 MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_CHAN, chan);
348
349 /* TODO: 11A */
350
351 if (work_around)
352 bwi_rf_work_around(mac, chan);
353
354 CSR_WRITE_2(sc, BWI_RF_CHAN, BWI_RF_2GHZ_CHAN(chan));
355
356 if (chan == 14) {
357 if (sc->sc_locale == BWI_SPROM_LOCALE_JAPAN)
358 HFLAGS_CLRBITS(mac, BWI_HFLAG_NOT_JAPAN);
359 else
360 HFLAGS_SETBITS(mac, BWI_HFLAG_NOT_JAPAN);
361 CSR_SETBITS_2(sc, BWI_RF_CHAN_EX, (1 << 11)); /* XXX */
362 } else {
363 CSR_CLRBITS_2(sc, BWI_RF_CHAN_EX, 0x840); /* XXX */
364 }
365 DELAY(8000); /* DELAY(2000); */
366
367 mac->mac_rf.rf_curchan = chan;
368 }
369
370 void
bwi_rf_get_gains(struct bwi_mac * mac)371 bwi_rf_get_gains(struct bwi_mac *mac)
372 {
373 #define SAVE_PHY_MAX 15
374 #define SAVE_RF_MAX 3
375
376 static const uint16_t save_rf_regs[SAVE_RF_MAX] =
377 { 0x52, 0x43, 0x7a };
378 static const uint16_t save_phy_regs[SAVE_PHY_MAX] = {
379 0x0429, 0x0001, 0x0811, 0x0812,
380 0x0814, 0x0815, 0x005a, 0x0059,
381 0x0058, 0x000a, 0x0003, 0x080f,
382 0x0810, 0x002b, 0x0015
383 };
384
385 struct bwi_softc *sc = mac->mac_sc;
386 struct bwi_phy *phy = &mac->mac_phy;
387 struct bwi_rf *rf = &mac->mac_rf;
388 uint16_t save_phy[SAVE_PHY_MAX];
389 uint16_t save_rf[SAVE_RF_MAX];
390 uint16_t trsw;
391 int i, j, loop1_max, loop1, loop2;
392
393 /*
394 * Save PHY/RF registers for later restoration
395 */
396 for (i = 0; i < SAVE_PHY_MAX; ++i)
397 save_phy[i] = PHY_READ(mac, save_phy_regs[i]);
398 PHY_READ(mac, 0x2d); /* dummy read */
399
400 for (i = 0; i < SAVE_RF_MAX; ++i)
401 save_rf[i] = RF_READ(mac, save_rf_regs[i]);
402
403 PHY_CLRBITS(mac, 0x429, 0xc000);
404 PHY_SETBITS(mac, 0x1, 0x8000);
405
406 PHY_SETBITS(mac, 0x811, 0x2);
407 PHY_CLRBITS(mac, 0x812, 0x2);
408 PHY_SETBITS(mac, 0x811, 0x1);
409 PHY_CLRBITS(mac, 0x812, 0x1);
410
411 PHY_SETBITS(mac, 0x814, 0x1);
412 PHY_CLRBITS(mac, 0x815, 0x1);
413 PHY_SETBITS(mac, 0x814, 0x2);
414 PHY_CLRBITS(mac, 0x815, 0x2);
415
416 PHY_SETBITS(mac, 0x811, 0xc);
417 PHY_SETBITS(mac, 0x812, 0xc);
418 PHY_SETBITS(mac, 0x811, 0x30);
419 PHY_FILT_SETBITS(mac, 0x812, 0xffcf, 0x10);
420
421 PHY_WRITE(mac, 0x5a, 0x780);
422 PHY_WRITE(mac, 0x59, 0xc810);
423 PHY_WRITE(mac, 0x58, 0xd);
424 PHY_SETBITS(mac, 0xa, 0x2000);
425
426 PHY_SETBITS(mac, 0x814, 0x4);
427 PHY_CLRBITS(mac, 0x815, 0x4);
428
429 PHY_FILT_SETBITS(mac, 0x3, 0xff9f, 0x40);
430
431 if (rf->rf_rev == 8) {
432 loop1_max = 15;
433 RF_WRITE(mac, 0x43, loop1_max);
434 } else {
435 loop1_max = 9;
436 RF_WRITE(mac, 0x52, 0x0);
437 RF_FILT_SETBITS(mac, 0x43, 0xfff0, loop1_max);
438 }
439
440 bwi_phy_set_bbp_atten(mac, 11);
441
442 if (phy->phy_rev >= 3)
443 PHY_WRITE(mac, 0x80f, 0xc020);
444 else
445 PHY_WRITE(mac, 0x80f, 0x8020);
446 PHY_WRITE(mac, 0x810, 0);
447
448 PHY_FILT_SETBITS(mac, 0x2b, 0xffc0, 0x1);
449 PHY_FILT_SETBITS(mac, 0x2b, 0xc0ff, 0x800);
450 PHY_SETBITS(mac, 0x811, 0x100);
451 PHY_CLRBITS(mac, 0x812, 0x3000);
452
453 if ((sc->sc_card_flags & BWI_CARD_F_EXT_LNA) &&
454 phy->phy_rev >= 7) {
455 PHY_SETBITS(mac, 0x811, 0x800);
456 PHY_SETBITS(mac, 0x812, 0x8000);
457 }
458 RF_CLRBITS(mac, 0x7a, 0xff08);
459
460 /*
461 * Find out 'loop1/loop2', which will be used to calculate
462 * max loopback gain later
463 */
464 j = 0;
465 for (i = 0; i < loop1_max; ++i) {
466 for (j = 0; j < 16; ++j) {
467 RF_WRITE(mac, 0x43, i);
468
469 if (bwi_rf_gain_max_reached(mac, j))
470 goto loop1_exit;
471 }
472 }
473 loop1_exit:
474 loop1 = i;
475 loop2 = j;
476
477 /*
478 * Find out 'trsw', which will be used to calculate
479 * TRSW(TX/RX switch) RX gain later
480 */
481 if (loop2 >= 8) {
482 PHY_SETBITS(mac, 0x812, 0x30);
483 trsw = 0x1b;
484 for (i = loop2 - 8; i < 16; ++i) {
485 trsw -= 3;
486 if (bwi_rf_gain_max_reached(mac, i))
487 break;
488 }
489 } else {
490 trsw = 0x18;
491 }
492
493 /*
494 * Restore saved PHY/RF registers
495 */
496 /* First 4 saved PHY registers need special processing */
497 for (i = 4; i < SAVE_PHY_MAX; ++i)
498 PHY_WRITE(mac, save_phy_regs[i], save_phy[i]);
499
500 bwi_phy_set_bbp_atten(mac, mac->mac_tpctl.bbp_atten);
501
502 for (i = 0; i < SAVE_RF_MAX; ++i)
503 RF_WRITE(mac, save_rf_regs[i], save_rf[i]);
504
505 PHY_WRITE(mac, save_phy_regs[2], save_phy[2] | 0x3);
506 DELAY(10);
507 PHY_WRITE(mac, save_phy_regs[2], save_phy[2]);
508 PHY_WRITE(mac, save_phy_regs[3], save_phy[3]);
509 PHY_WRITE(mac, save_phy_regs[0], save_phy[0]);
510 PHY_WRITE(mac, save_phy_regs[1], save_phy[1]);
511
512 /*
513 * Calculate gains
514 */
515 rf->rf_lo_gain = (loop2 * 6) - (loop1 * 4) - 11;
516 rf->rf_rx_gain = trsw * 2;
517 DPRINTF(mac->mac_sc, BWI_DBG_RF | BWI_DBG_INIT,
518 "lo gain: %u, rx gain: %u\n",
519 rf->rf_lo_gain, rf->rf_rx_gain);
520
521 #undef SAVE_RF_MAX
522 #undef SAVE_PHY_MAX
523 }
524
525 void
bwi_rf_init(struct bwi_mac * mac)526 bwi_rf_init(struct bwi_mac *mac)
527 {
528 struct bwi_rf *rf = &mac->mac_rf;
529
530 if (rf->rf_type == BWI_RF_T_BCM2060) {
531 /* TODO: 11A */
532 } else {
533 if (rf->rf_flags & BWI_RF_F_INITED)
534 RF_WRITE(mac, 0x78, rf->rf_calib);
535 else
536 bwi_rf_init_bcm2050(mac);
537 }
538 }
539
540 static void
bwi_rf_off_11a(struct bwi_mac * mac)541 bwi_rf_off_11a(struct bwi_mac *mac)
542 {
543 RF_WRITE(mac, 0x4, 0xff);
544 RF_WRITE(mac, 0x5, 0xfb);
545
546 PHY_SETBITS(mac, 0x10, 0x8);
547 PHY_SETBITS(mac, 0x11, 0x8);
548
549 PHY_WRITE(mac, 0x15, 0xaa00);
550 }
551
552 static void
bwi_rf_off_11bg(struct bwi_mac * mac)553 bwi_rf_off_11bg(struct bwi_mac *mac)
554 {
555 PHY_WRITE(mac, 0x15, 0xaa00);
556 }
557
558 static void
bwi_rf_off_11g_rev5(struct bwi_mac * mac)559 bwi_rf_off_11g_rev5(struct bwi_mac *mac)
560 {
561 PHY_SETBITS(mac, 0x811, 0x8c);
562 PHY_CLRBITS(mac, 0x812, 0x8c);
563 }
564
565 static void
bwi_rf_work_around(struct bwi_mac * mac,u_int chan)566 bwi_rf_work_around(struct bwi_mac *mac, u_int chan)
567 {
568 struct bwi_softc *sc = mac->mac_sc;
569 struct bwi_rf *rf = &mac->mac_rf;
570
571 if (chan == IEEE80211_CHAN_ANY) {
572 device_printf(sc->sc_dev, "%s invalid channel!!\n", __func__);
573 return;
574 }
575
576 if (rf->rf_type != BWI_RF_T_BCM2050 || rf->rf_rev >= 6)
577 return;
578
579 if (chan <= 10)
580 CSR_WRITE_2(sc, BWI_RF_CHAN, BWI_RF_2GHZ_CHAN(chan + 4));
581 else
582 CSR_WRITE_2(sc, BWI_RF_CHAN, BWI_RF_2GHZ_CHAN(1));
583 DELAY(1000);
584 CSR_WRITE_2(sc, BWI_RF_CHAN, BWI_RF_2GHZ_CHAN(chan));
585 }
586
587 static __inline struct bwi_rf_lo *
bwi_rf_lo_find(struct bwi_mac * mac,const struct bwi_tpctl * tpctl)588 bwi_rf_lo_find(struct bwi_mac *mac, const struct bwi_tpctl *tpctl)
589 {
590 uint16_t rf_atten, bbp_atten;
591 int remap_rf_atten;
592
593 remap_rf_atten = 1;
594 if (tpctl == NULL) {
595 bbp_atten = 2;
596 rf_atten = 3;
597 } else {
598 if (tpctl->tp_ctrl1 == 3)
599 remap_rf_atten = 0;
600
601 bbp_atten = tpctl->bbp_atten;
602 rf_atten = tpctl->rf_atten;
603
604 if (bbp_atten > 6)
605 bbp_atten = 6;
606 }
607
608 if (remap_rf_atten) {
609 #define MAP_MAX 10
610 static const uint16_t map[MAP_MAX] =
611 { 11, 10, 11, 12, 13, 12, 13, 12, 13, 12 };
612
613 #if 0
614 KASSERT(rf_atten < MAP_MAX, ("rf_atten %d", rf_atten));
615 rf_atten = map[rf_atten];
616 #else
617 if (rf_atten >= MAP_MAX) {
618 rf_atten = 0; /* XXX */
619 } else {
620 rf_atten = map[rf_atten];
621 }
622 #endif
623 #undef MAP_MAX
624 }
625
626 return bwi_get_rf_lo(mac, rf_atten, bbp_atten);
627 }
628
629 void
bwi_rf_lo_adjust(struct bwi_mac * mac,const struct bwi_tpctl * tpctl)630 bwi_rf_lo_adjust(struct bwi_mac *mac, const struct bwi_tpctl *tpctl)
631 {
632 const struct bwi_rf_lo *lo;
633
634 lo = bwi_rf_lo_find(mac, tpctl);
635 RF_LO_WRITE(mac, lo);
636 }
637
638 static void
bwi_rf_lo_write(struct bwi_mac * mac,const struct bwi_rf_lo * lo)639 bwi_rf_lo_write(struct bwi_mac *mac, const struct bwi_rf_lo *lo)
640 {
641 uint16_t val;
642
643 val = (uint8_t)lo->ctrl_lo;
644 val |= ((uint8_t)lo->ctrl_hi) << 8;
645
646 PHY_WRITE(mac, BWI_PHYR_RF_LO, val);
647 }
648
649 static int
bwi_rf_gain_max_reached(struct bwi_mac * mac,int idx)650 bwi_rf_gain_max_reached(struct bwi_mac *mac, int idx)
651 {
652 PHY_FILT_SETBITS(mac, 0x812, 0xf0ff, idx << 8);
653 PHY_FILT_SETBITS(mac, 0x15, 0xfff, 0xa000);
654 PHY_SETBITS(mac, 0x15, 0xf000);
655
656 DELAY(20);
657
658 return (PHY_READ(mac, 0x2d) >= 0xdfc);
659 }
660
661 /* XXX use bitmap array */
662 static __inline uint16_t
bitswap4(uint16_t val)663 bitswap4(uint16_t val)
664 {
665 uint16_t ret;
666
667 ret = (val & 0x8) >> 3;
668 ret |= (val & 0x4) >> 1;
669 ret |= (val & 0x2) << 1;
670 ret |= (val & 0x1) << 3;
671 return ret;
672 }
673
674 static __inline uint16_t
bwi_phy812_value(struct bwi_mac * mac,uint16_t lpd)675 bwi_phy812_value(struct bwi_mac *mac, uint16_t lpd)
676 {
677 struct bwi_softc *sc = mac->mac_sc;
678 struct bwi_phy *phy = &mac->mac_phy;
679 struct bwi_rf *rf = &mac->mac_rf;
680 uint16_t lo_gain, ext_lna, loop;
681
682 if ((phy->phy_flags & BWI_PHY_F_LINKED) == 0)
683 return 0;
684
685 lo_gain = rf->rf_lo_gain;
686 if (rf->rf_rev == 8)
687 lo_gain += 0x3e;
688 else
689 lo_gain += 0x26;
690
691 if (lo_gain >= 0x46) {
692 lo_gain -= 0x46;
693 ext_lna = 0x3000;
694 } else if (lo_gain >= 0x3a) {
695 lo_gain -= 0x3a;
696 ext_lna = 0x1000;
697 } else if (lo_gain >= 0x2e) {
698 lo_gain -= 0x2e;
699 ext_lna = 0x2000;
700 } else {
701 lo_gain -= 0x10;
702 ext_lna = 0;
703 }
704
705 for (loop = 0; loop < 16; ++loop) {
706 lo_gain -= (6 * loop);
707 if (lo_gain < 6)
708 break;
709 }
710
711 if (phy->phy_rev >= 7 && (sc->sc_card_flags & BWI_CARD_F_EXT_LNA)) {
712 if (ext_lna)
713 ext_lna |= 0x8000;
714 ext_lna |= (loop << 8);
715 switch (lpd) {
716 case 0x011:
717 return 0x8f92;
718 case 0x001:
719 return (0x8092 | ext_lna);
720 case 0x101:
721 return (0x2092 | ext_lna);
722 case 0x100:
723 return (0x2093 | ext_lna);
724 default:
725 panic("unsupported lpd\n");
726 }
727 } else {
728 ext_lna |= (loop << 8);
729 switch (lpd) {
730 case 0x011:
731 return 0xf92;
732 case 0x001:
733 case 0x101:
734 return (0x92 | ext_lna);
735 case 0x100:
736 return (0x93 | ext_lna);
737 default:
738 panic("unsupported lpd\n");
739 }
740 }
741
742 panic("never reached\n");
743 return 0;
744 }
745
746 void
bwi_rf_init_bcm2050(struct bwi_mac * mac)747 bwi_rf_init_bcm2050(struct bwi_mac *mac)
748 {
749 #define SAVE_RF_MAX 3
750 #define SAVE_PHY_COMM_MAX 4
751 #define SAVE_PHY_11G_MAX 6
752
753 static const uint16_t save_rf_regs[SAVE_RF_MAX] =
754 { 0x0043, 0x0051, 0x0052 };
755 static const uint16_t save_phy_regs_comm[SAVE_PHY_COMM_MAX] =
756 { 0x0015, 0x005a, 0x0059, 0x0058 };
757 static const uint16_t save_phy_regs_11g[SAVE_PHY_11G_MAX] =
758 { 0x0811, 0x0812, 0x0814, 0x0815, 0x0429, 0x0802 };
759
760 uint16_t save_rf[SAVE_RF_MAX];
761 uint16_t save_phy_comm[SAVE_PHY_COMM_MAX];
762 uint16_t save_phy_11g[SAVE_PHY_11G_MAX];
763 uint16_t phyr_35, phyr_30 = 0, rfr_78, phyr_80f = 0, phyr_810 = 0;
764 uint16_t bphy_ctrl = 0, bbp_atten, rf_chan_ex;
765 uint16_t phy812_val;
766 uint16_t calib;
767 uint32_t test_lim, test;
768 struct bwi_softc *sc = mac->mac_sc;
769 struct bwi_phy *phy = &mac->mac_phy;
770 struct bwi_rf *rf = &mac->mac_rf;
771 int i;
772
773 /*
774 * Save registers for later restoring
775 */
776 for (i = 0; i < SAVE_RF_MAX; ++i)
777 save_rf[i] = RF_READ(mac, save_rf_regs[i]);
778 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i)
779 save_phy_comm[i] = PHY_READ(mac, save_phy_regs_comm[i]);
780
781 if (phy->phy_mode == IEEE80211_MODE_11B) {
782 phyr_30 = PHY_READ(mac, 0x30);
783 bphy_ctrl = CSR_READ_2(sc, BWI_BPHY_CTRL);
784
785 PHY_WRITE(mac, 0x30, 0xff);
786 CSR_WRITE_2(sc, BWI_BPHY_CTRL, 0x3f3f);
787 } else if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
788 for (i = 0; i < SAVE_PHY_11G_MAX; ++i) {
789 save_phy_11g[i] =
790 PHY_READ(mac, save_phy_regs_11g[i]);
791 }
792
793 PHY_SETBITS(mac, 0x814, 0x3);
794 PHY_CLRBITS(mac, 0x815, 0x3);
795 PHY_CLRBITS(mac, 0x429, 0x8000);
796 PHY_CLRBITS(mac, 0x802, 0x3);
797
798 phyr_80f = PHY_READ(mac, 0x80f);
799 phyr_810 = PHY_READ(mac, 0x810);
800
801 if (phy->phy_rev >= 3)
802 PHY_WRITE(mac, 0x80f, 0xc020);
803 else
804 PHY_WRITE(mac, 0x80f, 0x8020);
805 PHY_WRITE(mac, 0x810, 0);
806
807 phy812_val = bwi_phy812_value(mac, 0x011);
808 PHY_WRITE(mac, 0x812, phy812_val);
809 if (phy->phy_rev < 7 ||
810 (sc->sc_card_flags & BWI_CARD_F_EXT_LNA) == 0)
811 PHY_WRITE(mac, 0x811, 0x1b3);
812 else
813 PHY_WRITE(mac, 0x811, 0x9b3);
814 }
815 CSR_SETBITS_2(sc, BWI_RF_ANTDIV, 0x8000);
816
817 phyr_35 = PHY_READ(mac, 0x35);
818 PHY_CLRBITS(mac, 0x35, 0x80);
819
820 bbp_atten = CSR_READ_2(sc, BWI_BBP_ATTEN);
821 rf_chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX);
822
823 if (phy->phy_version == 0) {
824 CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0x122);
825 } else {
826 if (phy->phy_version >= 2)
827 PHY_FILT_SETBITS(mac, 0x3, 0xffbf, 0x40);
828 CSR_SETBITS_2(sc, BWI_RF_CHAN_EX, 0x2000);
829 }
830
831 calib = bwi_rf_calibval(mac);
832
833 if (phy->phy_mode == IEEE80211_MODE_11B)
834 RF_WRITE(mac, 0x78, 0x26);
835
836 if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
837 phy812_val = bwi_phy812_value(mac, 0x011);
838 PHY_WRITE(mac, 0x812, phy812_val);
839 }
840
841 PHY_WRITE(mac, 0x15, 0xbfaf);
842 PHY_WRITE(mac, 0x2b, 0x1403);
843
844 if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
845 phy812_val = bwi_phy812_value(mac, 0x001);
846 PHY_WRITE(mac, 0x812, phy812_val);
847 }
848
849 PHY_WRITE(mac, 0x15, 0xbfa0);
850
851 RF_SETBITS(mac, 0x51, 0x4);
852 if (rf->rf_rev == 8) {
853 RF_WRITE(mac, 0x43, 0x1f);
854 } else {
855 RF_WRITE(mac, 0x52, 0);
856 RF_FILT_SETBITS(mac, 0x43, 0xfff0, 0x9);
857 }
858
859 test_lim = 0;
860 PHY_WRITE(mac, 0x58, 0);
861 for (i = 0; i < 16; ++i) {
862 PHY_WRITE(mac, 0x5a, 0x480);
863 PHY_WRITE(mac, 0x59, 0xc810);
864
865 PHY_WRITE(mac, 0x58, 0xd);
866 if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
867 phy812_val = bwi_phy812_value(mac, 0x101);
868 PHY_WRITE(mac, 0x812, phy812_val);
869 }
870 PHY_WRITE(mac, 0x15, 0xafb0);
871 DELAY(10);
872
873 if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
874 phy812_val = bwi_phy812_value(mac, 0x101);
875 PHY_WRITE(mac, 0x812, phy812_val);
876 }
877 PHY_WRITE(mac, 0x15, 0xefb0);
878 DELAY(10);
879
880 if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
881 phy812_val = bwi_phy812_value(mac, 0x100);
882 PHY_WRITE(mac, 0x812, phy812_val);
883 }
884 PHY_WRITE(mac, 0x15, 0xfff0);
885 DELAY(20);
886
887 test_lim += PHY_READ(mac, 0x2d);
888
889 PHY_WRITE(mac, 0x58, 0);
890 if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
891 phy812_val = bwi_phy812_value(mac, 0x101);
892 PHY_WRITE(mac, 0x812, phy812_val);
893 }
894 PHY_WRITE(mac, 0x15, 0xafb0);
895 }
896 ++test_lim;
897 test_lim >>= 9;
898
899 DELAY(10);
900
901 test = 0;
902 PHY_WRITE(mac, 0x58, 0);
903 for (i = 0; i < 16; ++i) {
904 int j;
905
906 rfr_78 = (bitswap4(i) << 1) | 0x20;
907 RF_WRITE(mac, 0x78, rfr_78);
908 DELAY(10);
909
910 /* NB: This block is slight different than the above one */
911 for (j = 0; j < 16; ++j) {
912 PHY_WRITE(mac, 0x5a, 0xd80);
913 PHY_WRITE(mac, 0x59, 0xc810);
914
915 PHY_WRITE(mac, 0x58, 0xd);
916 if ((phy->phy_flags & BWI_PHY_F_LINKED) ||
917 phy->phy_rev >= 2) {
918 phy812_val = bwi_phy812_value(mac, 0x101);
919 PHY_WRITE(mac, 0x812, phy812_val);
920 }
921 PHY_WRITE(mac, 0x15, 0xafb0);
922 DELAY(10);
923
924 if ((phy->phy_flags & BWI_PHY_F_LINKED) ||
925 phy->phy_rev >= 2) {
926 phy812_val = bwi_phy812_value(mac, 0x101);
927 PHY_WRITE(mac, 0x812, phy812_val);
928 }
929 PHY_WRITE(mac, 0x15, 0xefb0);
930 DELAY(10);
931
932 if ((phy->phy_flags & BWI_PHY_F_LINKED) ||
933 phy->phy_rev >= 2) {
934 phy812_val = bwi_phy812_value(mac, 0x100);
935 PHY_WRITE(mac, 0x812, phy812_val);
936 }
937 PHY_WRITE(mac, 0x15, 0xfff0);
938 DELAY(10);
939
940 test += PHY_READ(mac, 0x2d);
941
942 PHY_WRITE(mac, 0x58, 0);
943 if ((phy->phy_flags & BWI_PHY_F_LINKED) ||
944 phy->phy_rev >= 2) {
945 phy812_val = bwi_phy812_value(mac, 0x101);
946 PHY_WRITE(mac, 0x812, phy812_val);
947 }
948 PHY_WRITE(mac, 0x15, 0xafb0);
949 }
950
951 ++test;
952 test >>= 8;
953
954 if (test > test_lim)
955 break;
956 }
957 if (i > 15)
958 rf->rf_calib = rfr_78;
959 else
960 rf->rf_calib = calib;
961 if (rf->rf_calib != 0xffff) {
962 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_INIT,
963 "RF calibration value: 0x%04x\n", rf->rf_calib);
964 rf->rf_flags |= BWI_RF_F_INITED;
965 }
966
967 /*
968 * Restore trashes registers
969 */
970 PHY_WRITE(mac, save_phy_regs_comm[0], save_phy_comm[0]);
971
972 for (i = 0; i < SAVE_RF_MAX; ++i) {
973 int pos = (i + 1) % SAVE_RF_MAX;
974
975 RF_WRITE(mac, save_rf_regs[pos], save_rf[pos]);
976 }
977 for (i = 1; i < SAVE_PHY_COMM_MAX; ++i)
978 PHY_WRITE(mac, save_phy_regs_comm[i], save_phy_comm[i]);
979
980 CSR_WRITE_2(sc, BWI_BBP_ATTEN, bbp_atten);
981 if (phy->phy_version != 0)
982 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, rf_chan_ex);
983
984 PHY_WRITE(mac, 0x35, phyr_35);
985 bwi_rf_work_around(mac, rf->rf_curchan);
986
987 if (phy->phy_mode == IEEE80211_MODE_11B) {
988 PHY_WRITE(mac, 0x30, phyr_30);
989 CSR_WRITE_2(sc, BWI_BPHY_CTRL, bphy_ctrl);
990 } else if ((phy->phy_flags & BWI_PHY_F_LINKED) || phy->phy_rev >= 2) {
991 /* XXX Spec only says when PHY is linked (gmode) */
992 CSR_CLRBITS_2(sc, BWI_RF_ANTDIV, 0x8000);
993
994 for (i = 0; i < SAVE_PHY_11G_MAX; ++i) {
995 PHY_WRITE(mac, save_phy_regs_11g[i],
996 save_phy_11g[i]);
997 }
998
999 PHY_WRITE(mac, 0x80f, phyr_80f);
1000 PHY_WRITE(mac, 0x810, phyr_810);
1001 }
1002
1003 #undef SAVE_PHY_11G_MAX
1004 #undef SAVE_PHY_COMM_MAX
1005 #undef SAVE_RF_MAX
1006 }
1007
1008 static uint16_t
bwi_rf_calibval(struct bwi_mac * mac)1009 bwi_rf_calibval(struct bwi_mac *mac)
1010 {
1011 /* http://bcm-specs.sipsolutions.net/RCCTable */
1012 static const uint16_t rf_calibvals[] = {
1013 0x2, 0x3, 0x1, 0xf, 0x6, 0x7, 0x5, 0xf,
1014 0xa, 0xb, 0x9, 0xf, 0xe, 0xf, 0xd, 0xf
1015 };
1016 uint16_t val, calib;
1017 int idx;
1018
1019 val = RF_READ(mac, BWI_RFR_BBP_ATTEN);
1020 idx = __SHIFTOUT(val, BWI_RFR_BBP_ATTEN_CALIB_IDX);
1021 KASSERT(idx < (int)(sizeof(rf_calibvals) / sizeof(rf_calibvals[0])),
1022 ("idx %d", idx));
1023
1024 calib = rf_calibvals[idx] << 1;
1025 if (val & BWI_RFR_BBP_ATTEN_CALIB_BIT)
1026 calib |= 0x1;
1027 calib |= 0x20;
1028
1029 return calib;
1030 }
1031
1032 static __inline int32_t
_bwi_adjust_devide(int32_t num,int32_t den)1033 _bwi_adjust_devide(int32_t num, int32_t den)
1034 {
1035 if (num < 0)
1036 return (num / den);
1037 else
1038 return (num + den / 2) / den;
1039 }
1040
1041 /*
1042 * http://bcm-specs.sipsolutions.net/TSSI_to_DBM_Table
1043 * "calculating table entries"
1044 */
1045 static int
bwi_rf_calc_txpower(int8_t * txpwr,uint8_t idx,const int16_t pa_params[])1046 bwi_rf_calc_txpower(int8_t *txpwr, uint8_t idx, const int16_t pa_params[])
1047 {
1048 int32_t m1, m2, f, dbm;
1049 int i;
1050
1051 m1 = _bwi_adjust_devide(16 * pa_params[0] + idx * pa_params[1], 32);
1052 m2 = imax(_bwi_adjust_devide(32768 + idx * pa_params[2], 256), 1);
1053
1054 #define ITER_MAX 16
1055
1056 f = 256;
1057 for (i = 0; i < ITER_MAX; ++i) {
1058 int32_t q, d;
1059
1060 q = _bwi_adjust_devide(
1061 f * 4096 - _bwi_adjust_devide(m2 * f, 16) * f, 2048);
1062 d = abs(q - f);
1063 f = q;
1064
1065 if (d < 2)
1066 break;
1067 }
1068 if (i == ITER_MAX)
1069 return EINVAL;
1070
1071 #undef ITER_MAX
1072
1073 dbm = _bwi_adjust_devide(m1 * f, 8192);
1074 if (dbm < -127)
1075 dbm = -127;
1076 else if (dbm > 128)
1077 dbm = 128;
1078
1079 *txpwr = dbm;
1080 return 0;
1081 }
1082
1083 int
bwi_rf_map_txpower(struct bwi_mac * mac)1084 bwi_rf_map_txpower(struct bwi_mac *mac)
1085 {
1086 struct bwi_softc *sc = mac->mac_sc;
1087 struct bwi_rf *rf = &mac->mac_rf;
1088 struct bwi_phy *phy = &mac->mac_phy;
1089 uint16_t sprom_ofs, val, mask;
1090 int16_t pa_params[3];
1091 int error = 0, i, ant_gain, reg_txpower_max;
1092
1093 /*
1094 * Find out max TX power
1095 */
1096 val = bwi_read_sprom(sc, BWI_SPROM_MAX_TXPWR);
1097 if (phy->phy_mode == IEEE80211_MODE_11A) {
1098 rf->rf_txpower_max = __SHIFTOUT(val,
1099 BWI_SPROM_MAX_TXPWR_MASK_11A);
1100 } else {
1101 rf->rf_txpower_max = __SHIFTOUT(val,
1102 BWI_SPROM_MAX_TXPWR_MASK_11BG);
1103
1104 if ((sc->sc_card_flags & BWI_CARD_F_PA_GPIO9) &&
1105 phy->phy_mode == IEEE80211_MODE_11G)
1106 rf->rf_txpower_max -= 3;
1107 }
1108 if (rf->rf_txpower_max <= 0) {
1109 device_printf(sc->sc_dev, "invalid max txpower in sprom\n");
1110 rf->rf_txpower_max = 74;
1111 }
1112 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1113 "max txpower from sprom: %d dBm\n", rf->rf_txpower_max);
1114
1115 /*
1116 * Find out region/domain max TX power, which is adjusted
1117 * by antenna gain and 1.5 dBm fluctuation as mentioned
1118 * in v3 spec.
1119 */
1120 val = bwi_read_sprom(sc, BWI_SPROM_ANT_GAIN);
1121 if (phy->phy_mode == IEEE80211_MODE_11A)
1122 ant_gain = __SHIFTOUT(val, BWI_SPROM_ANT_GAIN_MASK_11A);
1123 else
1124 ant_gain = __SHIFTOUT(val, BWI_SPROM_ANT_GAIN_MASK_11BG);
1125 if (ant_gain == 0xff) {
1126 device_printf(sc->sc_dev, "invalid antenna gain in sprom\n");
1127 ant_gain = 2;
1128 }
1129 ant_gain *= 4;
1130 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1131 "ant gain %d dBm\n", ant_gain);
1132
1133 reg_txpower_max = 90 - ant_gain - 6; /* XXX magic number */
1134 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1135 "region/domain max txpower %d dBm\n", reg_txpower_max);
1136
1137 /*
1138 * Force max TX power within region/domain TX power limit
1139 */
1140 if (rf->rf_txpower_max > reg_txpower_max)
1141 rf->rf_txpower_max = reg_txpower_max;
1142 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1143 "max txpower %d dBm\n", rf->rf_txpower_max);
1144
1145 /*
1146 * Create TSSI to TX power mapping
1147 */
1148
1149 if (sc->sc_bbp_id == BWI_BBPID_BCM4301 &&
1150 rf->rf_type != BWI_RF_T_BCM2050) {
1151 rf->rf_idle_tssi0 = BWI_DEFAULT_IDLE_TSSI;
1152 bcopy(bwi_txpower_map_11b, rf->rf_txpower_map0,
1153 sizeof(rf->rf_txpower_map0));
1154 goto back;
1155 }
1156
1157 #define IS_VALID_PA_PARAM(p) ((p) != 0 && (p) != -1)
1158
1159 /*
1160 * Extract PA parameters
1161 */
1162 if (phy->phy_mode == IEEE80211_MODE_11A)
1163 sprom_ofs = BWI_SPROM_PA_PARAM_11A;
1164 else
1165 sprom_ofs = BWI_SPROM_PA_PARAM_11BG;
1166 for (i = 0; i < nitems(pa_params); ++i)
1167 pa_params[i] = (int16_t)bwi_read_sprom(sc, sprom_ofs + (i * 2));
1168
1169 for (i = 0; i < nitems(pa_params); ++i) {
1170 /*
1171 * If one of the PA parameters from SPROM is not valid,
1172 * fall back to the default values, if there are any.
1173 */
1174 if (!IS_VALID_PA_PARAM(pa_params[i])) {
1175 const int8_t *txpower_map;
1176
1177 if (phy->phy_mode == IEEE80211_MODE_11A) {
1178 device_printf(sc->sc_dev,
1179 "no tssi2dbm table for 11a PHY\n");
1180 return ENXIO;
1181 }
1182
1183 if (phy->phy_mode == IEEE80211_MODE_11G) {
1184 DPRINTF(sc,
1185 BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1186 "%s\n", "use default 11g TSSI map");
1187 txpower_map = bwi_txpower_map_11g;
1188 } else {
1189 DPRINTF(sc,
1190 BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1191 "%s\n", "use default 11b TSSI map");
1192 txpower_map = bwi_txpower_map_11b;
1193 }
1194
1195 rf->rf_idle_tssi0 = BWI_DEFAULT_IDLE_TSSI;
1196 bcopy(txpower_map, rf->rf_txpower_map0,
1197 sizeof(rf->rf_txpower_map0));
1198 goto back;
1199 }
1200 }
1201
1202 /*
1203 * All of the PA parameters from SPROM are valid.
1204 */
1205
1206 /*
1207 * Extract idle TSSI from SPROM.
1208 */
1209 val = bwi_read_sprom(sc, BWI_SPROM_IDLE_TSSI);
1210 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1211 "sprom idle tssi: 0x%04x\n", val);
1212
1213 if (phy->phy_mode == IEEE80211_MODE_11A)
1214 mask = BWI_SPROM_IDLE_TSSI_MASK_11A;
1215 else
1216 mask = BWI_SPROM_IDLE_TSSI_MASK_11BG;
1217
1218 rf->rf_idle_tssi0 = (int)__SHIFTOUT(val, mask);
1219 if (!IS_VALID_PA_PARAM(rf->rf_idle_tssi0))
1220 rf->rf_idle_tssi0 = 62;
1221
1222 #undef IS_VALID_PA_PARAM
1223
1224 /*
1225 * Calculate TX power map, which is indexed by TSSI
1226 */
1227 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER,
1228 "%s\n", "TSSI-TX power map:");
1229 for (i = 0; i < BWI_TSSI_MAX; ++i) {
1230 error = bwi_rf_calc_txpower(&rf->rf_txpower_map0[i], i,
1231 pa_params);
1232 if (error) {
1233 device_printf(sc->sc_dev,
1234 "bwi_rf_calc_txpower failed\n");
1235 break;
1236 }
1237
1238 #ifdef BWI_DEBUG
1239 if (i != 0 && i % 8 == 0) {
1240 _DPRINTF(sc,
1241 BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER,
1242 "%s\n", "");
1243 }
1244 #endif
1245 _DPRINTF(sc, BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER,
1246 "%d ", rf->rf_txpower_map0[i]);
1247 }
1248 _DPRINTF(sc, BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER,
1249 "%s\n", "");
1250 back:
1251 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH,
1252 "idle tssi0: %d\n", rf->rf_idle_tssi0);
1253 return error;
1254 }
1255
1256 static void
bwi_rf_lo_update_11g(struct bwi_mac * mac)1257 bwi_rf_lo_update_11g(struct bwi_mac *mac)
1258 {
1259 struct bwi_softc *sc = mac->mac_sc;
1260 struct bwi_rf *rf = &mac->mac_rf;
1261 struct bwi_phy *phy = &mac->mac_phy;
1262 struct bwi_tpctl *tpctl = &mac->mac_tpctl;
1263 struct rf_saveregs regs;
1264 uint16_t ant_div, chan_ex;
1265 uint8_t devi_ctrl;
1266 u_int orig_chan;
1267
1268 /*
1269 * Save RF/PHY registers for later restoration
1270 */
1271 orig_chan = rf->rf_curchan;
1272 bzero(®s, sizeof(regs));
1273
1274 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1275 SAVE_PHY_REG(mac, ®s, 429);
1276 SAVE_PHY_REG(mac, ®s, 802);
1277
1278 PHY_WRITE(mac, 0x429, regs.phy_429 & 0x7fff);
1279 PHY_WRITE(mac, 0x802, regs.phy_802 & 0xfffc);
1280 }
1281
1282 ant_div = CSR_READ_2(sc, BWI_RF_ANTDIV);
1283 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div | 0x8000);
1284 chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX);
1285
1286 SAVE_PHY_REG(mac, ®s, 15);
1287 SAVE_PHY_REG(mac, ®s, 2a);
1288 SAVE_PHY_REG(mac, ®s, 35);
1289 SAVE_PHY_REG(mac, ®s, 60);
1290 SAVE_RF_REG(mac, ®s, 43);
1291 SAVE_RF_REG(mac, ®s, 7a);
1292 SAVE_RF_REG(mac, ®s, 52);
1293 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1294 SAVE_PHY_REG(mac, ®s, 811);
1295 SAVE_PHY_REG(mac, ®s, 812);
1296 SAVE_PHY_REG(mac, ®s, 814);
1297 SAVE_PHY_REG(mac, ®s, 815);
1298 }
1299
1300 /* Force to channel 6 */
1301 bwi_rf_set_chan(mac, 6, 0);
1302
1303 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1304 PHY_WRITE(mac, 0x429, regs.phy_429 & 0x7fff);
1305 PHY_WRITE(mac, 0x802, regs.phy_802 & 0xfffc);
1306 bwi_mac_dummy_xmit(mac);
1307 }
1308 RF_WRITE(mac, 0x43, 0x6);
1309
1310 bwi_phy_set_bbp_atten(mac, 2);
1311
1312 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, 0);
1313
1314 PHY_WRITE(mac, 0x2e, 0x7f);
1315 PHY_WRITE(mac, 0x80f, 0x78);
1316 PHY_WRITE(mac, 0x35, regs.phy_35 & 0xff7f);
1317 RF_WRITE(mac, 0x7a, regs.rf_7a & 0xfff0);
1318 PHY_WRITE(mac, 0x2b, 0x203);
1319 PHY_WRITE(mac, 0x2a, 0x8a3);
1320
1321 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1322 PHY_WRITE(mac, 0x814, regs.phy_814 | 0x3);
1323 PHY_WRITE(mac, 0x815, regs.phy_815 & 0xfffc);
1324 PHY_WRITE(mac, 0x811, 0x1b3);
1325 PHY_WRITE(mac, 0x812, 0xb2);
1326 }
1327
1328 if ((sc->sc_flags & BWI_F_RUNNING) == 0)
1329 tpctl->tp_ctrl2 = bwi_rf_get_tp_ctrl2(mac);
1330 PHY_WRITE(mac, 0x80f, 0x8078);
1331
1332 /*
1333 * Measure all RF LO
1334 */
1335 devi_ctrl = _bwi_rf_lo_update_11g(mac, regs.rf_7a);
1336
1337 /*
1338 * Restore saved RF/PHY registers
1339 */
1340 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1341 PHY_WRITE(mac, 0x15, 0xe300);
1342 PHY_WRITE(mac, 0x812, (devi_ctrl << 8) | 0xa0);
1343 DELAY(5);
1344 PHY_WRITE(mac, 0x812, (devi_ctrl << 8) | 0xa2);
1345 DELAY(2);
1346 PHY_WRITE(mac, 0x812, (devi_ctrl << 8) | 0xa3);
1347 } else {
1348 PHY_WRITE(mac, 0x15, devi_ctrl | 0xefa0);
1349 }
1350
1351 if ((sc->sc_flags & BWI_F_RUNNING) == 0)
1352 tpctl = NULL;
1353 bwi_rf_lo_adjust(mac, tpctl);
1354
1355 PHY_WRITE(mac, 0x2e, 0x807f);
1356 if (phy->phy_flags & BWI_PHY_F_LINKED)
1357 PHY_WRITE(mac, 0x2f, 0x202);
1358 else
1359 PHY_WRITE(mac, 0x2f, 0x101);
1360
1361 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, chan_ex);
1362
1363 RESTORE_PHY_REG(mac, ®s, 15);
1364 RESTORE_PHY_REG(mac, ®s, 2a);
1365 RESTORE_PHY_REG(mac, ®s, 35);
1366 RESTORE_PHY_REG(mac, ®s, 60);
1367
1368 RESTORE_RF_REG(mac, ®s, 43);
1369 RESTORE_RF_REG(mac, ®s, 7a);
1370
1371 regs.rf_52 &= 0xf0;
1372 regs.rf_52 |= (RF_READ(mac, 0x52) & 0xf);
1373 RF_WRITE(mac, 0x52, regs.rf_52);
1374
1375 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div);
1376
1377 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1378 RESTORE_PHY_REG(mac, ®s, 811);
1379 RESTORE_PHY_REG(mac, ®s, 812);
1380 RESTORE_PHY_REG(mac, ®s, 814);
1381 RESTORE_PHY_REG(mac, ®s, 815);
1382 RESTORE_PHY_REG(mac, ®s, 429);
1383 RESTORE_PHY_REG(mac, ®s, 802);
1384 }
1385
1386 bwi_rf_set_chan(mac, orig_chan, 1);
1387 }
1388
1389 static uint32_t
bwi_rf_lo_devi_measure(struct bwi_mac * mac,uint16_t ctrl)1390 bwi_rf_lo_devi_measure(struct bwi_mac *mac, uint16_t ctrl)
1391 {
1392 struct bwi_phy *phy = &mac->mac_phy;
1393 uint32_t devi = 0;
1394 int i;
1395
1396 if (phy->phy_flags & BWI_PHY_F_LINKED)
1397 ctrl <<= 8;
1398
1399 for (i = 0; i < 8; ++i) {
1400 if (phy->phy_flags & BWI_PHY_F_LINKED) {
1401 PHY_WRITE(mac, 0x15, 0xe300);
1402 PHY_WRITE(mac, 0x812, ctrl | 0xb0);
1403 DELAY(5);
1404 PHY_WRITE(mac, 0x812, ctrl | 0xb2);
1405 DELAY(2);
1406 PHY_WRITE(mac, 0x812, ctrl | 0xb3);
1407 DELAY(4);
1408 PHY_WRITE(mac, 0x15, 0xf300);
1409 } else {
1410 PHY_WRITE(mac, 0x15, ctrl | 0xefa0);
1411 DELAY(2);
1412 PHY_WRITE(mac, 0x15, ctrl | 0xefe0);
1413 DELAY(4);
1414 PHY_WRITE(mac, 0x15, ctrl | 0xffe0);
1415 }
1416 DELAY(8);
1417 devi += PHY_READ(mac, 0x2d);
1418 }
1419 return devi;
1420 }
1421
1422 static uint16_t
bwi_rf_get_tp_ctrl2(struct bwi_mac * mac)1423 bwi_rf_get_tp_ctrl2(struct bwi_mac *mac)
1424 {
1425 uint32_t devi_min;
1426 uint16_t tp_ctrl2 = 0;
1427 int i;
1428
1429 RF_WRITE(mac, 0x52, 0);
1430 DELAY(10);
1431 devi_min = bwi_rf_lo_devi_measure(mac, 0);
1432
1433 for (i = 0; i < 16; ++i) {
1434 uint32_t devi;
1435
1436 RF_WRITE(mac, 0x52, i);
1437 DELAY(10);
1438 devi = bwi_rf_lo_devi_measure(mac, 0);
1439
1440 if (devi < devi_min) {
1441 devi_min = devi;
1442 tp_ctrl2 = i;
1443 }
1444 }
1445 return tp_ctrl2;
1446 }
1447
1448 static uint8_t
_bwi_rf_lo_update_11g(struct bwi_mac * mac,uint16_t orig_rf7a)1449 _bwi_rf_lo_update_11g(struct bwi_mac *mac, uint16_t orig_rf7a)
1450 {
1451 #define RF_ATTEN_LISTSZ 14
1452 #define BBP_ATTEN_MAX 4 /* half */
1453
1454 static const int rf_atten_list[RF_ATTEN_LISTSZ] =
1455 { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8, 1, 2, 3, 4 };
1456 static const int rf_atten_init_list[RF_ATTEN_LISTSZ] =
1457 { 0, 3, 1, 5, 7, 3, 2, 0, 4, 6, -1, -1, -1, -1 };
1458 static const int rf_lo_measure_order[RF_ATTEN_LISTSZ] =
1459 { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8, 10, 11, 12, 13 };
1460
1461 struct bwi_softc *sc = mac->mac_sc;
1462 struct bwi_rf_lo lo_save, *lo;
1463 uint8_t devi_ctrl = 0;
1464 int idx, adj_rf7a = 0;
1465
1466 bzero(&lo_save, sizeof(lo_save));
1467 for (idx = 0; idx < RF_ATTEN_LISTSZ; ++idx) {
1468 int init_rf_atten = rf_atten_init_list[idx];
1469 int rf_atten = rf_atten_list[idx];
1470 int bbp_atten;
1471
1472 for (bbp_atten = 0; bbp_atten < BBP_ATTEN_MAX; ++bbp_atten) {
1473 uint16_t tp_ctrl2, rf7a;
1474
1475 if ((sc->sc_flags & BWI_F_RUNNING) == 0) {
1476 if (idx == 0) {
1477 bzero(&lo_save, sizeof(lo_save));
1478 } else if (init_rf_atten < 0) {
1479 lo = bwi_get_rf_lo(mac,
1480 rf_atten, 2 * bbp_atten);
1481 bcopy(lo, &lo_save, sizeof(lo_save));
1482 } else {
1483 lo = bwi_get_rf_lo(mac,
1484 init_rf_atten, 0);
1485 bcopy(lo, &lo_save, sizeof(lo_save));
1486 }
1487
1488 devi_ctrl = 0;
1489 adj_rf7a = 0;
1490
1491 /*
1492 * XXX
1493 * Linux driver overflows 'val'
1494 */
1495 if (init_rf_atten >= 0) {
1496 int val;
1497
1498 val = rf_atten * 2 + bbp_atten;
1499 if (val > 14) {
1500 adj_rf7a = 1;
1501 if (val > 17)
1502 devi_ctrl = 1;
1503 if (val > 19)
1504 devi_ctrl = 2;
1505 }
1506 }
1507 } else {
1508 lo = bwi_get_rf_lo(mac,
1509 rf_atten, 2 * bbp_atten);
1510 if (!bwi_rf_lo_isused(mac, lo))
1511 continue;
1512 bcopy(lo, &lo_save, sizeof(lo_save));
1513
1514 devi_ctrl = 3;
1515 adj_rf7a = 0;
1516 }
1517
1518 RF_WRITE(mac, BWI_RFR_ATTEN, rf_atten);
1519
1520 tp_ctrl2 = mac->mac_tpctl.tp_ctrl2;
1521 if (init_rf_atten < 0)
1522 tp_ctrl2 |= (3 << 4);
1523 RF_WRITE(mac, BWI_RFR_TXPWR, tp_ctrl2);
1524
1525 DELAY(10);
1526
1527 bwi_phy_set_bbp_atten(mac, bbp_atten * 2);
1528
1529 rf7a = orig_rf7a & 0xfff0;
1530 if (adj_rf7a)
1531 rf7a |= 0x8;
1532 RF_WRITE(mac, 0x7a, rf7a);
1533
1534 lo = bwi_get_rf_lo(mac,
1535 rf_lo_measure_order[idx], bbp_atten * 2);
1536 bwi_rf_lo_measure_11g(mac, &lo_save, lo, devi_ctrl);
1537 }
1538 }
1539 return devi_ctrl;
1540
1541 #undef RF_ATTEN_LISTSZ
1542 #undef BBP_ATTEN_MAX
1543 }
1544
1545 static void
bwi_rf_lo_measure_11g(struct bwi_mac * mac,const struct bwi_rf_lo * src_lo,struct bwi_rf_lo * dst_lo,uint8_t devi_ctrl)1546 bwi_rf_lo_measure_11g(struct bwi_mac *mac, const struct bwi_rf_lo *src_lo,
1547 struct bwi_rf_lo *dst_lo, uint8_t devi_ctrl)
1548 {
1549 #define LO_ADJUST_MIN 1
1550 #define LO_ADJUST_MAX 8
1551 #define LO_ADJUST(hi, lo) { .ctrl_hi = hi, .ctrl_lo = lo }
1552 static const struct bwi_rf_lo rf_lo_adjust[LO_ADJUST_MAX] = {
1553 LO_ADJUST(1, 1),
1554 LO_ADJUST(1, 0),
1555 LO_ADJUST(1, -1),
1556 LO_ADJUST(0, -1),
1557 LO_ADJUST(-1, -1),
1558 LO_ADJUST(-1, 0),
1559 LO_ADJUST(-1, 1),
1560 LO_ADJUST(0, 1)
1561 };
1562 #undef LO_ADJUST
1563
1564 struct bwi_rf_lo lo_min;
1565 uint32_t devi_min;
1566 int found, loop_count, adjust_state;
1567
1568 bcopy(src_lo, &lo_min, sizeof(lo_min));
1569 RF_LO_WRITE(mac, &lo_min);
1570 devi_min = bwi_rf_lo_devi_measure(mac, devi_ctrl);
1571
1572 loop_count = 12; /* XXX */
1573 adjust_state = 0;
1574 do {
1575 struct bwi_rf_lo lo_base;
1576 int i, fin;
1577
1578 found = 0;
1579 if (adjust_state == 0) {
1580 i = LO_ADJUST_MIN;
1581 fin = LO_ADJUST_MAX;
1582 } else if (adjust_state % 2 == 0) {
1583 i = adjust_state - 1;
1584 fin = adjust_state + 1;
1585 } else {
1586 i = adjust_state - 2;
1587 fin = adjust_state + 2;
1588 }
1589
1590 if (i < LO_ADJUST_MIN)
1591 i += LO_ADJUST_MAX;
1592 KASSERT(i <= LO_ADJUST_MAX && i >= LO_ADJUST_MIN, ("i %d", i));
1593
1594 if (fin > LO_ADJUST_MAX)
1595 fin -= LO_ADJUST_MAX;
1596 KASSERT(fin <= LO_ADJUST_MAX && fin >= LO_ADJUST_MIN,
1597 ("fin %d", fin));
1598
1599 bcopy(&lo_min, &lo_base, sizeof(lo_base));
1600 for (;;) {
1601 struct bwi_rf_lo lo;
1602
1603 lo.ctrl_hi = lo_base.ctrl_hi +
1604 rf_lo_adjust[i - 1].ctrl_hi;
1605 lo.ctrl_lo = lo_base.ctrl_lo +
1606 rf_lo_adjust[i - 1].ctrl_lo;
1607
1608 if (abs(lo.ctrl_lo) < 9 && abs(lo.ctrl_hi) < 9) {
1609 uint32_t devi;
1610
1611 RF_LO_WRITE(mac, &lo);
1612 devi = bwi_rf_lo_devi_measure(mac, devi_ctrl);
1613 if (devi < devi_min) {
1614 devi_min = devi;
1615 adjust_state = i;
1616 found = 1;
1617 bcopy(&lo, &lo_min, sizeof(lo_min));
1618 }
1619 }
1620 if (i == fin)
1621 break;
1622 if (i == LO_ADJUST_MAX)
1623 i = LO_ADJUST_MIN;
1624 else
1625 ++i;
1626 }
1627 } while (loop_count-- && found);
1628
1629 bcopy(&lo_min, dst_lo, sizeof(*dst_lo));
1630
1631 #undef LO_ADJUST_MIN
1632 #undef LO_ADJUST_MAX
1633 }
1634
1635 static void
bwi_rf_calc_nrssi_slope_11b(struct bwi_mac * mac)1636 bwi_rf_calc_nrssi_slope_11b(struct bwi_mac *mac)
1637 {
1638 #define SAVE_RF_MAX 3
1639 #define SAVE_PHY_MAX 8
1640
1641 static const uint16_t save_rf_regs[SAVE_RF_MAX] =
1642 { 0x7a, 0x52, 0x43 };
1643 static const uint16_t save_phy_regs[SAVE_PHY_MAX] =
1644 { 0x30, 0x26, 0x15, 0x2a, 0x20, 0x5a, 0x59, 0x58 };
1645
1646 struct bwi_softc *sc = mac->mac_sc;
1647 struct bwi_rf *rf = &mac->mac_rf;
1648 struct bwi_phy *phy = &mac->mac_phy;
1649 uint16_t save_rf[SAVE_RF_MAX];
1650 uint16_t save_phy[SAVE_PHY_MAX];
1651 uint16_t ant_div, bbp_atten, chan_ex;
1652 int16_t nrssi[2];
1653 int i;
1654
1655 /*
1656 * Save RF/PHY registers for later restoration
1657 */
1658 for (i = 0; i < SAVE_RF_MAX; ++i)
1659 save_rf[i] = RF_READ(mac, save_rf_regs[i]);
1660 for (i = 0; i < SAVE_PHY_MAX; ++i)
1661 save_phy[i] = PHY_READ(mac, save_phy_regs[i]);
1662
1663 ant_div = CSR_READ_2(sc, BWI_RF_ANTDIV);
1664 bbp_atten = CSR_READ_2(sc, BWI_BBP_ATTEN);
1665 chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX);
1666
1667 /*
1668 * Calculate nrssi0
1669 */
1670 if (phy->phy_rev >= 5)
1671 RF_CLRBITS(mac, 0x7a, 0xff80);
1672 else
1673 RF_CLRBITS(mac, 0x7a, 0xfff0);
1674 PHY_WRITE(mac, 0x30, 0xff);
1675
1676 CSR_WRITE_2(sc, BWI_BPHY_CTRL, 0x7f7f);
1677
1678 PHY_WRITE(mac, 0x26, 0);
1679 PHY_SETBITS(mac, 0x15, 0x20);
1680 PHY_WRITE(mac, 0x2a, 0x8a3);
1681 RF_SETBITS(mac, 0x7a, 0x80);
1682
1683 nrssi[0] = (int16_t)PHY_READ(mac, 0x27);
1684
1685 /*
1686 * Calculate nrssi1
1687 */
1688 RF_CLRBITS(mac, 0x7a, 0xff80);
1689 if (phy->phy_version >= 2)
1690 CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0x40);
1691 else if (phy->phy_version == 0)
1692 CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0x122);
1693 else
1694 CSR_CLRBITS_2(sc, BWI_RF_CHAN_EX, 0xdfff);
1695
1696 PHY_WRITE(mac, 0x20, 0x3f3f);
1697 PHY_WRITE(mac, 0x15, 0xf330);
1698
1699 RF_WRITE(mac, 0x5a, 0x60);
1700 RF_CLRBITS(mac, 0x43, 0xff0f);
1701
1702 PHY_WRITE(mac, 0x5a, 0x480);
1703 PHY_WRITE(mac, 0x59, 0x810);
1704 PHY_WRITE(mac, 0x58, 0xd);
1705
1706 DELAY(20);
1707
1708 nrssi[1] = (int16_t)PHY_READ(mac, 0x27);
1709
1710 /*
1711 * Restore saved RF/PHY registers
1712 */
1713 PHY_WRITE(mac, save_phy_regs[0], save_phy[0]);
1714 RF_WRITE(mac, save_rf_regs[0], save_rf[0]);
1715
1716 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div);
1717
1718 for (i = 1; i < 4; ++i)
1719 PHY_WRITE(mac, save_phy_regs[i], save_phy[i]);
1720
1721 bwi_rf_work_around(mac, rf->rf_curchan);
1722
1723 if (phy->phy_version != 0)
1724 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, chan_ex);
1725
1726 for (; i < SAVE_PHY_MAX; ++i)
1727 PHY_WRITE(mac, save_phy_regs[i], save_phy[i]);
1728
1729 for (i = 1; i < SAVE_RF_MAX; ++i)
1730 RF_WRITE(mac, save_rf_regs[i], save_rf[i]);
1731
1732 /*
1733 * Install calculated narrow RSSI values
1734 */
1735 if (nrssi[0] == nrssi[1])
1736 rf->rf_nrssi_slope = 0x10000;
1737 else
1738 rf->rf_nrssi_slope = 0x400000 / (nrssi[0] - nrssi[1]);
1739 if (nrssi[0] <= -4) {
1740 rf->rf_nrssi[0] = nrssi[0];
1741 rf->rf_nrssi[1] = nrssi[1];
1742 }
1743
1744 #undef SAVE_RF_MAX
1745 #undef SAVE_PHY_MAX
1746 }
1747
1748 static void
bwi_rf_set_nrssi_ofs_11g(struct bwi_mac * mac)1749 bwi_rf_set_nrssi_ofs_11g(struct bwi_mac *mac)
1750 {
1751 #define SAVE_RF_MAX 2
1752 #define SAVE_PHY_COMM_MAX 10
1753 #define SAVE_PHY6_MAX 8
1754
1755 static const uint16_t save_rf_regs[SAVE_RF_MAX] =
1756 { 0x7a, 0x43 };
1757 static const uint16_t save_phy_comm_regs[SAVE_PHY_COMM_MAX] = {
1758 0x0001, 0x0811, 0x0812, 0x0814,
1759 0x0815, 0x005a, 0x0059, 0x0058,
1760 0x000a, 0x0003
1761 };
1762 static const uint16_t save_phy6_regs[SAVE_PHY6_MAX] = {
1763 0x002e, 0x002f, 0x080f, 0x0810,
1764 0x0801, 0x0060, 0x0014, 0x0478
1765 };
1766
1767 struct bwi_phy *phy = &mac->mac_phy;
1768 uint16_t save_rf[SAVE_RF_MAX];
1769 uint16_t save_phy_comm[SAVE_PHY_COMM_MAX];
1770 uint16_t save_phy6[SAVE_PHY6_MAX];
1771 uint16_t rf7b = 0xffff;
1772 int16_t nrssi;
1773 int i, phy6_idx = 0;
1774
1775 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i)
1776 save_phy_comm[i] = PHY_READ(mac, save_phy_comm_regs[i]);
1777 for (i = 0; i < SAVE_RF_MAX; ++i)
1778 save_rf[i] = RF_READ(mac, save_rf_regs[i]);
1779
1780 PHY_CLRBITS(mac, 0x429, 0x8000);
1781 PHY_FILT_SETBITS(mac, 0x1, 0x3fff, 0x4000);
1782 PHY_SETBITS(mac, 0x811, 0xc);
1783 PHY_FILT_SETBITS(mac, 0x812, 0xfff3, 0x4);
1784 PHY_CLRBITS(mac, 0x802, 0x3);
1785
1786 if (phy->phy_rev >= 6) {
1787 for (i = 0; i < SAVE_PHY6_MAX; ++i)
1788 save_phy6[i] = PHY_READ(mac, save_phy6_regs[i]);
1789
1790 PHY_WRITE(mac, 0x2e, 0);
1791 PHY_WRITE(mac, 0x2f, 0);
1792 PHY_WRITE(mac, 0x80f, 0);
1793 PHY_WRITE(mac, 0x810, 0);
1794 PHY_SETBITS(mac, 0x478, 0x100);
1795 PHY_SETBITS(mac, 0x801, 0x40);
1796 PHY_SETBITS(mac, 0x60, 0x40);
1797 PHY_SETBITS(mac, 0x14, 0x200);
1798 }
1799
1800 RF_SETBITS(mac, 0x7a, 0x70);
1801 RF_SETBITS(mac, 0x7a, 0x80);
1802
1803 DELAY(30);
1804
1805 nrssi = bwi_nrssi_11g(mac);
1806 if (nrssi == 31) {
1807 for (i = 7; i >= 4; --i) {
1808 RF_WRITE(mac, 0x7b, i);
1809 DELAY(20);
1810 nrssi = bwi_nrssi_11g(mac);
1811 if (nrssi < 31 && rf7b == 0xffff)
1812 rf7b = i;
1813 }
1814 if (rf7b == 0xffff)
1815 rf7b = 4;
1816 } else {
1817 struct bwi_gains gains;
1818
1819 RF_CLRBITS(mac, 0x7a, 0xff80);
1820
1821 PHY_SETBITS(mac, 0x814, 0x1);
1822 PHY_CLRBITS(mac, 0x815, 0x1);
1823 PHY_SETBITS(mac, 0x811, 0xc);
1824 PHY_SETBITS(mac, 0x812, 0xc);
1825 PHY_SETBITS(mac, 0x811, 0x30);
1826 PHY_SETBITS(mac, 0x812, 0x30);
1827 PHY_WRITE(mac, 0x5a, 0x480);
1828 PHY_WRITE(mac, 0x59, 0x810);
1829 PHY_WRITE(mac, 0x58, 0xd);
1830 if (phy->phy_version == 0)
1831 PHY_WRITE(mac, 0x3, 0x122);
1832 else
1833 PHY_SETBITS(mac, 0xa, 0x2000);
1834 PHY_SETBITS(mac, 0x814, 0x4);
1835 PHY_CLRBITS(mac, 0x815, 0x4);
1836 PHY_FILT_SETBITS(mac, 0x3, 0xff9f, 0x40);
1837 RF_SETBITS(mac, 0x7a, 0xf);
1838
1839 bzero(&gains, sizeof(gains));
1840 gains.tbl_gain1 = 3;
1841 gains.tbl_gain2 = 0;
1842 gains.phy_gain = 1;
1843 bwi_set_gains(mac, &gains);
1844
1845 RF_FILT_SETBITS(mac, 0x43, 0xf0, 0xf);
1846 DELAY(30);
1847
1848 nrssi = bwi_nrssi_11g(mac);
1849 if (nrssi == -32) {
1850 for (i = 0; i < 4; ++i) {
1851 RF_WRITE(mac, 0x7b, i);
1852 DELAY(20);
1853 nrssi = bwi_nrssi_11g(mac);
1854 if (nrssi > -31 && rf7b == 0xffff)
1855 rf7b = i;
1856 }
1857 if (rf7b == 0xffff)
1858 rf7b = 3;
1859 } else {
1860 rf7b = 0;
1861 }
1862 }
1863 RF_WRITE(mac, 0x7b, rf7b);
1864
1865 /*
1866 * Restore saved RF/PHY registers
1867 */
1868 if (phy->phy_rev >= 6) {
1869 for (phy6_idx = 0; phy6_idx < 4; ++phy6_idx) {
1870 PHY_WRITE(mac, save_phy6_regs[phy6_idx],
1871 save_phy6[phy6_idx]);
1872 }
1873 }
1874
1875 /* Saved PHY registers 0, 1, 2 are handled later */
1876 for (i = 3; i < SAVE_PHY_COMM_MAX; ++i)
1877 PHY_WRITE(mac, save_phy_comm_regs[i], save_phy_comm[i]);
1878
1879 for (i = SAVE_RF_MAX - 1; i >= 0; --i)
1880 RF_WRITE(mac, save_rf_regs[i], save_rf[i]);
1881
1882 PHY_SETBITS(mac, 0x802, 0x3);
1883 PHY_SETBITS(mac, 0x429, 0x8000);
1884
1885 bwi_set_gains(mac, NULL);
1886
1887 if (phy->phy_rev >= 6) {
1888 for (; phy6_idx < SAVE_PHY6_MAX; ++phy6_idx) {
1889 PHY_WRITE(mac, save_phy6_regs[phy6_idx],
1890 save_phy6[phy6_idx]);
1891 }
1892 }
1893
1894 PHY_WRITE(mac, save_phy_comm_regs[0], save_phy_comm[0]);
1895 PHY_WRITE(mac, save_phy_comm_regs[2], save_phy_comm[2]);
1896 PHY_WRITE(mac, save_phy_comm_regs[1], save_phy_comm[1]);
1897
1898 #undef SAVE_RF_MAX
1899 #undef SAVE_PHY_COMM_MAX
1900 #undef SAVE_PHY6_MAX
1901 }
1902
1903 static void
bwi_rf_calc_nrssi_slope_11g(struct bwi_mac * mac)1904 bwi_rf_calc_nrssi_slope_11g(struct bwi_mac *mac)
1905 {
1906 #define SAVE_RF_MAX 3
1907 #define SAVE_PHY_COMM_MAX 4
1908 #define SAVE_PHY3_MAX 8
1909
1910 static const uint16_t save_rf_regs[SAVE_RF_MAX] =
1911 { 0x7a, 0x52, 0x43 };
1912 static const uint16_t save_phy_comm_regs[SAVE_PHY_COMM_MAX] =
1913 { 0x15, 0x5a, 0x59, 0x58 };
1914 static const uint16_t save_phy3_regs[SAVE_PHY3_MAX] = {
1915 0x002e, 0x002f, 0x080f, 0x0810,
1916 0x0801, 0x0060, 0x0014, 0x0478
1917 };
1918
1919 struct bwi_softc *sc = mac->mac_sc;
1920 struct bwi_phy *phy = &mac->mac_phy;
1921 struct bwi_rf *rf = &mac->mac_rf;
1922 uint16_t save_rf[SAVE_RF_MAX];
1923 uint16_t save_phy_comm[SAVE_PHY_COMM_MAX];
1924 uint16_t save_phy3[SAVE_PHY3_MAX];
1925 uint16_t ant_div, bbp_atten, chan_ex;
1926 struct bwi_gains gains;
1927 int16_t nrssi[2];
1928 int i, phy3_idx = 0;
1929
1930 if (rf->rf_rev >= 9)
1931 return;
1932 else if (rf->rf_rev == 8)
1933 bwi_rf_set_nrssi_ofs_11g(mac);
1934
1935 PHY_CLRBITS(mac, 0x429, 0x8000);
1936 PHY_CLRBITS(mac, 0x802, 0x3);
1937
1938 /*
1939 * Save RF/PHY registers for later restoration
1940 */
1941 ant_div = CSR_READ_2(sc, BWI_RF_ANTDIV);
1942 CSR_SETBITS_2(sc, BWI_RF_ANTDIV, 0x8000);
1943
1944 for (i = 0; i < SAVE_RF_MAX; ++i)
1945 save_rf[i] = RF_READ(mac, save_rf_regs[i]);
1946 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i)
1947 save_phy_comm[i] = PHY_READ(mac, save_phy_comm_regs[i]);
1948
1949 bbp_atten = CSR_READ_2(sc, BWI_BBP_ATTEN);
1950 chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX);
1951
1952 if (phy->phy_rev >= 3) {
1953 for (i = 0; i < SAVE_PHY3_MAX; ++i)
1954 save_phy3[i] = PHY_READ(mac, save_phy3_regs[i]);
1955
1956 PHY_WRITE(mac, 0x2e, 0);
1957 PHY_WRITE(mac, 0x810, 0);
1958
1959 if (phy->phy_rev == 4 || phy->phy_rev == 6 ||
1960 phy->phy_rev == 7) {
1961 PHY_SETBITS(mac, 0x478, 0x100);
1962 PHY_SETBITS(mac, 0x810, 0x40);
1963 } else if (phy->phy_rev == 3 || phy->phy_rev == 5) {
1964 PHY_CLRBITS(mac, 0x810, 0x40);
1965 }
1966
1967 PHY_SETBITS(mac, 0x60, 0x40);
1968 PHY_SETBITS(mac, 0x14, 0x200);
1969 }
1970
1971 /*
1972 * Calculate nrssi0
1973 */
1974 RF_SETBITS(mac, 0x7a, 0x70);
1975
1976 bzero(&gains, sizeof(gains));
1977 gains.tbl_gain1 = 0;
1978 gains.tbl_gain2 = 8;
1979 gains.phy_gain = 0;
1980 bwi_set_gains(mac, &gains);
1981
1982 RF_CLRBITS(mac, 0x7a, 0xff08);
1983 if (phy->phy_rev >= 2) {
1984 PHY_FILT_SETBITS(mac, 0x811, 0xffcf, 0x30);
1985 PHY_FILT_SETBITS(mac, 0x812, 0xffcf, 0x10);
1986 }
1987
1988 RF_SETBITS(mac, 0x7a, 0x80);
1989 DELAY(20);
1990 nrssi[0] = bwi_nrssi_11g(mac);
1991
1992 /*
1993 * Calculate nrssi1
1994 */
1995 RF_CLRBITS(mac, 0x7a, 0xff80);
1996 if (phy->phy_version >= 2)
1997 PHY_FILT_SETBITS(mac, 0x3, 0xff9f, 0x40);
1998 CSR_SETBITS_2(sc, BWI_RF_CHAN_EX, 0x2000);
1999
2000 RF_SETBITS(mac, 0x7a, 0xf);
2001 PHY_WRITE(mac, 0x15, 0xf330);
2002 if (phy->phy_rev >= 2) {
2003 PHY_FILT_SETBITS(mac, 0x812, 0xffcf, 0x20);
2004 PHY_FILT_SETBITS(mac, 0x811, 0xffcf, 0x20);
2005 }
2006
2007 bzero(&gains, sizeof(gains));
2008 gains.tbl_gain1 = 3;
2009 gains.tbl_gain2 = 0;
2010 gains.phy_gain = 1;
2011 bwi_set_gains(mac, &gains);
2012
2013 if (rf->rf_rev == 8) {
2014 RF_WRITE(mac, 0x43, 0x1f);
2015 } else {
2016 RF_FILT_SETBITS(mac, 0x52, 0xff0f, 0x60);
2017 RF_FILT_SETBITS(mac, 0x43, 0xfff0, 0x9);
2018 }
2019 PHY_WRITE(mac, 0x5a, 0x480);
2020 PHY_WRITE(mac, 0x59, 0x810);
2021 PHY_WRITE(mac, 0x58, 0xd);
2022 DELAY(20);
2023
2024 nrssi[1] = bwi_nrssi_11g(mac);
2025
2026 /*
2027 * Install calculated narrow RSSI values
2028 */
2029 if (nrssi[1] == nrssi[0])
2030 rf->rf_nrssi_slope = 0x10000;
2031 else
2032 rf->rf_nrssi_slope = 0x400000 / (nrssi[0] - nrssi[1]);
2033 if (nrssi[0] >= -4) {
2034 rf->rf_nrssi[0] = nrssi[1];
2035 rf->rf_nrssi[1] = nrssi[0];
2036 }
2037
2038 /*
2039 * Restore saved RF/PHY registers
2040 */
2041 if (phy->phy_rev >= 3) {
2042 for (phy3_idx = 0; phy3_idx < 4; ++phy3_idx) {
2043 PHY_WRITE(mac, save_phy3_regs[phy3_idx],
2044 save_phy3[phy3_idx]);
2045 }
2046 }
2047 if (phy->phy_rev >= 2) {
2048 PHY_CLRBITS(mac, 0x812, 0x30);
2049 PHY_CLRBITS(mac, 0x811, 0x30);
2050 }
2051
2052 for (i = 0; i < SAVE_RF_MAX; ++i)
2053 RF_WRITE(mac, save_rf_regs[i], save_rf[i]);
2054
2055 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div);
2056 CSR_WRITE_2(sc, BWI_BBP_ATTEN, bbp_atten);
2057 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, chan_ex);
2058
2059 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i)
2060 PHY_WRITE(mac, save_phy_comm_regs[i], save_phy_comm[i]);
2061
2062 bwi_rf_work_around(mac, rf->rf_curchan);
2063 PHY_SETBITS(mac, 0x802, 0x3);
2064 bwi_set_gains(mac, NULL);
2065 PHY_SETBITS(mac, 0x429, 0x8000);
2066
2067 if (phy->phy_rev >= 3) {
2068 for (; phy3_idx < SAVE_PHY3_MAX; ++phy3_idx) {
2069 PHY_WRITE(mac, save_phy3_regs[phy3_idx],
2070 save_phy3[phy3_idx]);
2071 }
2072 }
2073
2074 bwi_rf_init_sw_nrssi_table(mac);
2075 bwi_rf_set_nrssi_thr_11g(mac);
2076
2077 #undef SAVE_RF_MAX
2078 #undef SAVE_PHY_COMM_MAX
2079 #undef SAVE_PHY3_MAX
2080 }
2081
2082 static void
bwi_rf_init_sw_nrssi_table(struct bwi_mac * mac)2083 bwi_rf_init_sw_nrssi_table(struct bwi_mac *mac)
2084 {
2085 struct bwi_rf *rf = &mac->mac_rf;
2086 int d, i;
2087
2088 d = 0x1f - rf->rf_nrssi[0];
2089 for (i = 0; i < BWI_NRSSI_TBLSZ; ++i) {
2090 int val;
2091
2092 val = (((i - d) * rf->rf_nrssi_slope) / 0x10000) + 0x3a;
2093 if (val < 0)
2094 val = 0;
2095 else if (val > 0x3f)
2096 val = 0x3f;
2097
2098 rf->rf_nrssi_table[i] = val;
2099 }
2100 }
2101
2102 void
bwi_rf_init_hw_nrssi_table(struct bwi_mac * mac,uint16_t adjust)2103 bwi_rf_init_hw_nrssi_table(struct bwi_mac *mac, uint16_t adjust)
2104 {
2105 int i;
2106
2107 for (i = 0; i < BWI_NRSSI_TBLSZ; ++i) {
2108 int16_t val;
2109
2110 val = bwi_nrssi_read(mac, i);
2111
2112 val -= adjust;
2113 if (val < -32)
2114 val = -32;
2115 else if (val > 31)
2116 val = 31;
2117
2118 bwi_nrssi_write(mac, i, val);
2119 }
2120 }
2121
2122 static void
bwi_rf_set_nrssi_thr_11b(struct bwi_mac * mac)2123 bwi_rf_set_nrssi_thr_11b(struct bwi_mac *mac)
2124 {
2125 struct bwi_rf *rf = &mac->mac_rf;
2126 int32_t thr;
2127
2128 if (rf->rf_type != BWI_RF_T_BCM2050 ||
2129 (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) == 0)
2130 return;
2131
2132 /*
2133 * Calculate nrssi threshold
2134 */
2135 if (rf->rf_rev >= 6) {
2136 thr = (rf->rf_nrssi[1] - rf->rf_nrssi[0]) * 32;
2137 thr += 20 * (rf->rf_nrssi[0] + 1);
2138 thr /= 40;
2139 } else {
2140 thr = rf->rf_nrssi[1] - 5;
2141 }
2142 if (thr < 0)
2143 thr = 0;
2144 else if (thr > 0x3e)
2145 thr = 0x3e;
2146
2147 PHY_READ(mac, BWI_PHYR_NRSSI_THR_11B); /* dummy read */
2148 PHY_WRITE(mac, BWI_PHYR_NRSSI_THR_11B, (((uint16_t)thr) << 8) | 0x1c);
2149
2150 if (rf->rf_rev >= 6) {
2151 PHY_WRITE(mac, 0x87, 0xe0d);
2152 PHY_WRITE(mac, 0x86, 0xc0b);
2153 PHY_WRITE(mac, 0x85, 0xa09);
2154 PHY_WRITE(mac, 0x84, 0x808);
2155 PHY_WRITE(mac, 0x83, 0x808);
2156 PHY_WRITE(mac, 0x82, 0x604);
2157 PHY_WRITE(mac, 0x81, 0x302);
2158 PHY_WRITE(mac, 0x80, 0x100);
2159 }
2160 }
2161
2162 static __inline int32_t
_nrssi_threshold(const struct bwi_rf * rf,int32_t val)2163 _nrssi_threshold(const struct bwi_rf *rf, int32_t val)
2164 {
2165 val *= (rf->rf_nrssi[1] - rf->rf_nrssi[0]);
2166 val += (rf->rf_nrssi[0] << 6);
2167 if (val < 32)
2168 val += 31;
2169 else
2170 val += 32;
2171 val >>= 6;
2172 if (val < -31)
2173 val = -31;
2174 else if (val > 31)
2175 val = 31;
2176 return val;
2177 }
2178
2179 static void
bwi_rf_set_nrssi_thr_11g(struct bwi_mac * mac)2180 bwi_rf_set_nrssi_thr_11g(struct bwi_mac *mac)
2181 {
2182 int32_t thr1, thr2;
2183 uint16_t thr;
2184
2185 /*
2186 * Find the two nrssi thresholds
2187 */
2188 if ((mac->mac_phy.phy_flags & BWI_PHY_F_LINKED) == 0 ||
2189 (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) == 0) {
2190 int16_t nrssi;
2191
2192 nrssi = bwi_nrssi_read(mac, 0x20);
2193 if (nrssi >= 32)
2194 nrssi -= 64;
2195
2196 if (nrssi < 3) {
2197 thr1 = 0x2b;
2198 thr2 = 0x27;
2199 } else {
2200 thr1 = 0x2d;
2201 thr2 = 0x2b;
2202 }
2203 } else {
2204 /* TODO Interfere mode */
2205 thr1 = _nrssi_threshold(&mac->mac_rf, 0x11);
2206 thr2 = _nrssi_threshold(&mac->mac_rf, 0xe);
2207 }
2208
2209 #define NRSSI_THR1_MASK __BITS(5, 0)
2210 #define NRSSI_THR2_MASK __BITS(11, 6)
2211
2212 thr = __SHIFTIN((uint32_t)thr1, NRSSI_THR1_MASK) |
2213 __SHIFTIN((uint32_t)thr2, NRSSI_THR2_MASK);
2214 PHY_FILT_SETBITS(mac, BWI_PHYR_NRSSI_THR_11G, 0xf000, thr);
2215
2216 #undef NRSSI_THR1_MASK
2217 #undef NRSSI_THR2_MASK
2218 }
2219
2220 void
bwi_rf_clear_tssi(struct bwi_mac * mac)2221 bwi_rf_clear_tssi(struct bwi_mac *mac)
2222 {
2223 /* XXX use function pointer */
2224 if (mac->mac_phy.phy_mode == IEEE80211_MODE_11A) {
2225 /* TODO:11A */
2226 } else {
2227 uint16_t val;
2228 int i;
2229
2230 val = __SHIFTIN(BWI_INVALID_TSSI, BWI_LO_TSSI_MASK) |
2231 __SHIFTIN(BWI_INVALID_TSSI, BWI_HI_TSSI_MASK);
2232
2233 for (i = 0; i < 2; ++i) {
2234 MOBJ_WRITE_2(mac, BWI_COMM_MOBJ,
2235 BWI_COMM_MOBJ_TSSI_DS + (i * 2), val);
2236 }
2237
2238 for (i = 0; i < 2; ++i) {
2239 MOBJ_WRITE_2(mac, BWI_COMM_MOBJ,
2240 BWI_COMM_MOBJ_TSSI_OFDM + (i * 2), val);
2241 }
2242 }
2243 }
2244
2245 void
bwi_rf_clear_state(struct bwi_rf * rf)2246 bwi_rf_clear_state(struct bwi_rf *rf)
2247 {
2248 int i;
2249
2250 rf->rf_flags &= ~BWI_RF_CLEAR_FLAGS;
2251 bzero(rf->rf_lo, sizeof(rf->rf_lo));
2252 bzero(rf->rf_lo_used, sizeof(rf->rf_lo_used));
2253
2254 rf->rf_nrssi_slope = 0;
2255 rf->rf_nrssi[0] = BWI_INVALID_NRSSI;
2256 rf->rf_nrssi[1] = BWI_INVALID_NRSSI;
2257
2258 for (i = 0; i < BWI_NRSSI_TBLSZ; ++i)
2259 rf->rf_nrssi_table[i] = i;
2260
2261 rf->rf_lo_gain = 0;
2262 rf->rf_rx_gain = 0;
2263
2264 bcopy(rf->rf_txpower_map0, rf->rf_txpower_map,
2265 sizeof(rf->rf_txpower_map));
2266 rf->rf_idle_tssi = rf->rf_idle_tssi0;
2267 }
2268
2269 static void
bwi_rf_on_11a(struct bwi_mac * mac)2270 bwi_rf_on_11a(struct bwi_mac *mac)
2271 {
2272 /* TODO:11A */
2273 }
2274
2275 static void
bwi_rf_on_11bg(struct bwi_mac * mac)2276 bwi_rf_on_11bg(struct bwi_mac *mac)
2277 {
2278 struct bwi_phy *phy = &mac->mac_phy;
2279
2280 PHY_WRITE(mac, 0x15, 0x8000);
2281 PHY_WRITE(mac, 0x15, 0xcc00);
2282 if (phy->phy_flags & BWI_PHY_F_LINKED)
2283 PHY_WRITE(mac, 0x15, 0xc0);
2284 else
2285 PHY_WRITE(mac, 0x15, 0);
2286
2287 bwi_rf_set_chan(mac, 6 /* XXX */, 1);
2288 }
2289
2290 void
bwi_rf_set_ant_mode(struct bwi_mac * mac,int ant_mode)2291 bwi_rf_set_ant_mode(struct bwi_mac *mac, int ant_mode)
2292 {
2293 struct bwi_softc *sc = mac->mac_sc;
2294 struct bwi_phy *phy = &mac->mac_phy;
2295 uint16_t val;
2296
2297 KASSERT(ant_mode == BWI_ANT_MODE_0 ||
2298 ant_mode == BWI_ANT_MODE_1 ||
2299 ant_mode == BWI_ANT_MODE_AUTO, ("ant_mode %d", ant_mode));
2300
2301 HFLAGS_CLRBITS(mac, BWI_HFLAG_AUTO_ANTDIV);
2302
2303 if (phy->phy_mode == IEEE80211_MODE_11B) {
2304 /* NOTE: v4/v3 conflicts, take v3 */
2305 if (mac->mac_rev == 2)
2306 val = BWI_ANT_MODE_AUTO;
2307 else
2308 val = ant_mode;
2309 val <<= 7;
2310 PHY_FILT_SETBITS(mac, 0x3e2, 0xfe7f, val);
2311 } else { /* 11a/g */
2312 /* XXX reg/value naming */
2313 val = ant_mode << 7;
2314 PHY_FILT_SETBITS(mac, 0x401, 0x7e7f, val);
2315
2316 if (ant_mode == BWI_ANT_MODE_AUTO)
2317 PHY_CLRBITS(mac, 0x42b, 0x100);
2318
2319 if (phy->phy_mode == IEEE80211_MODE_11A) {
2320 /* TODO:11A */
2321 } else { /* 11g */
2322 if (ant_mode == BWI_ANT_MODE_AUTO)
2323 PHY_SETBITS(mac, 0x48c, 0x2000);
2324 else
2325 PHY_CLRBITS(mac, 0x48c, 0x2000);
2326
2327 if (phy->phy_rev >= 2) {
2328 PHY_SETBITS(mac, 0x461, 0x10);
2329 PHY_FILT_SETBITS(mac, 0x4ad, 0xff00, 0x15);
2330 if (phy->phy_rev == 2) {
2331 PHY_WRITE(mac, 0x427, 0x8);
2332 } else {
2333 PHY_FILT_SETBITS(mac, 0x427,
2334 0xff00, 0x8);
2335 }
2336
2337 if (phy->phy_rev >= 6)
2338 PHY_WRITE(mac, 0x49b, 0xdc);
2339 }
2340 }
2341 }
2342
2343 /* XXX v4 set AUTO_ANTDIV unconditionally */
2344 if (ant_mode == BWI_ANT_MODE_AUTO)
2345 HFLAGS_SETBITS(mac, BWI_HFLAG_AUTO_ANTDIV);
2346
2347 val = ant_mode << 8;
2348 MOBJ_FILT_SETBITS_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_TX_BEACON,
2349 0xfc3f, val);
2350 MOBJ_FILT_SETBITS_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_TX_ACK,
2351 0xfc3f, val);
2352 MOBJ_FILT_SETBITS_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_TX_PROBE_RESP,
2353 0xfc3f, val);
2354
2355 /* XXX what's these */
2356 if (phy->phy_mode == IEEE80211_MODE_11B)
2357 CSR_SETBITS_2(sc, 0x5e, 0x4);
2358
2359 CSR_WRITE_4(sc, 0x100, 0x1000000);
2360 if (mac->mac_rev < 5)
2361 CSR_WRITE_4(sc, 0x10c, 0x1000000);
2362
2363 mac->mac_rf.rf_ant_mode = ant_mode;
2364 }
2365
2366 int
bwi_rf_get_latest_tssi(struct bwi_mac * mac,int8_t tssi[],uint16_t ofs)2367 bwi_rf_get_latest_tssi(struct bwi_mac *mac, int8_t tssi[], uint16_t ofs)
2368 {
2369 int i;
2370
2371 for (i = 0; i < 4; ) {
2372 uint16_t val;
2373
2374 val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, ofs + i);
2375 tssi[i++] = (int8_t)__SHIFTOUT(val, BWI_LO_TSSI_MASK);
2376 tssi[i++] = (int8_t)__SHIFTOUT(val, BWI_HI_TSSI_MASK);
2377 }
2378
2379 for (i = 0; i < 4; ++i) {
2380 if (tssi[i] == BWI_INVALID_TSSI)
2381 return EINVAL;
2382 }
2383 return 0;
2384 }
2385
2386 int
bwi_rf_tssi2dbm(struct bwi_mac * mac,int8_t tssi,int8_t * txpwr)2387 bwi_rf_tssi2dbm(struct bwi_mac *mac, int8_t tssi, int8_t *txpwr)
2388 {
2389 struct bwi_rf *rf = &mac->mac_rf;
2390 int pwr_idx;
2391
2392 pwr_idx = rf->rf_idle_tssi + (int)tssi - rf->rf_base_tssi;
2393 #if 0
2394 if (pwr_idx < 0 || pwr_idx >= BWI_TSSI_MAX)
2395 return EINVAL;
2396 #else
2397 if (pwr_idx < 0)
2398 pwr_idx = 0;
2399 else if (pwr_idx >= BWI_TSSI_MAX)
2400 pwr_idx = BWI_TSSI_MAX - 1;
2401 #endif
2402
2403 *txpwr = rf->rf_txpower_map[pwr_idx];
2404 return 0;
2405 }
2406
2407 static int
bwi_rf_calc_rssi_bcm2050(struct bwi_mac * mac,const struct bwi_rxbuf_hdr * hdr)2408 bwi_rf_calc_rssi_bcm2050(struct bwi_mac *mac, const struct bwi_rxbuf_hdr *hdr)
2409 {
2410 uint16_t flags1, flags3;
2411 int rssi, lna_gain;
2412
2413 rssi = hdr->rxh_rssi;
2414 flags1 = le16toh(hdr->rxh_flags1);
2415 flags3 = le16toh(hdr->rxh_flags3);
2416
2417 if (flags1 & BWI_RXH_F1_OFDM) {
2418 if (rssi > 127)
2419 rssi -= 256;
2420 if (flags3 & BWI_RXH_F3_BCM2050_RSSI)
2421 rssi += 17;
2422 else
2423 rssi -= 4;
2424 return rssi;
2425 }
2426
2427 if (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) {
2428 struct bwi_rf *rf = &mac->mac_rf;
2429
2430 if (rssi >= BWI_NRSSI_TBLSZ)
2431 rssi = BWI_NRSSI_TBLSZ - 1;
2432
2433 rssi = ((31 - (int)rf->rf_nrssi_table[rssi]) * -131) / 128;
2434 rssi -= 67;
2435 } else {
2436 rssi = ((31 - rssi) * -149) / 128;
2437 rssi -= 68;
2438 }
2439
2440 if (mac->mac_phy.phy_mode != IEEE80211_MODE_11G)
2441 return rssi;
2442
2443 if (flags3 & BWI_RXH_F3_BCM2050_RSSI)
2444 rssi += 20;
2445
2446 lna_gain = __SHIFTOUT(le16toh(hdr->rxh_phyinfo),
2447 BWI_RXH_PHYINFO_LNAGAIN);
2448 DPRINTF(mac->mac_sc, BWI_DBG_RF | BWI_DBG_RX,
2449 "lna_gain %d, phyinfo 0x%04x\n",
2450 lna_gain, le16toh(hdr->rxh_phyinfo));
2451 switch (lna_gain) {
2452 case 0:
2453 rssi += 27;
2454 break;
2455 case 1:
2456 rssi += 6;
2457 break;
2458 case 2:
2459 rssi += 12;
2460 break;
2461 case 3:
2462 /*
2463 * XXX
2464 * According to v3 spec, we should do _nothing_ here,
2465 * but it seems that the result RSSI will be too low
2466 * (relative to what ath(4) says). Raise it a little
2467 * bit.
2468 */
2469 rssi += 5;
2470 break;
2471 default:
2472 panic("impossible lna gain %d", lna_gain);
2473 }
2474 return rssi;
2475 }
2476
2477 static int
bwi_rf_calc_rssi_bcm2053(struct bwi_mac * mac,const struct bwi_rxbuf_hdr * hdr)2478 bwi_rf_calc_rssi_bcm2053(struct bwi_mac *mac, const struct bwi_rxbuf_hdr *hdr)
2479 {
2480 uint16_t flags1;
2481 int rssi;
2482
2483 rssi = (((int)hdr->rxh_rssi - 11) * 103) / 64;
2484
2485 flags1 = le16toh(hdr->rxh_flags1);
2486 if (flags1 & BWI_RXH_F1_BCM2053_RSSI)
2487 rssi -= 109;
2488 else
2489 rssi -= 83;
2490 return rssi;
2491 }
2492
2493 static int
bwi_rf_calc_rssi_bcm2060(struct bwi_mac * mac,const struct bwi_rxbuf_hdr * hdr)2494 bwi_rf_calc_rssi_bcm2060(struct bwi_mac *mac, const struct bwi_rxbuf_hdr *hdr)
2495 {
2496 int rssi;
2497
2498 rssi = hdr->rxh_rssi;
2499 if (rssi > 127)
2500 rssi -= 256;
2501 return rssi;
2502 }
2503
2504 static int
bwi_rf_calc_noise_bcm2050(struct bwi_mac * mac)2505 bwi_rf_calc_noise_bcm2050(struct bwi_mac *mac)
2506 {
2507 uint16_t val;
2508 int noise;
2509
2510 val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_RF_NOISE);
2511 noise = (int)val; /* XXX check bounds? */
2512
2513 if (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) {
2514 struct bwi_rf *rf = &mac->mac_rf;
2515
2516 if (noise >= BWI_NRSSI_TBLSZ)
2517 noise = BWI_NRSSI_TBLSZ - 1;
2518
2519 noise = ((31 - (int)rf->rf_nrssi_table[noise]) * -131) / 128;
2520 noise -= 67;
2521 } else {
2522 noise = ((31 - noise) * -149) / 128;
2523 noise -= 68;
2524 }
2525 return noise;
2526 }
2527
2528 static int
bwi_rf_calc_noise_bcm2053(struct bwi_mac * mac)2529 bwi_rf_calc_noise_bcm2053(struct bwi_mac *mac)
2530 {
2531 uint16_t val;
2532 int noise;
2533
2534 val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_RF_NOISE);
2535 noise = (int)val; /* XXX check bounds? */
2536
2537 noise = ((noise - 11) * 103) / 64;
2538 noise -= 109;
2539 return noise;
2540 }
2541
2542 static int
bwi_rf_calc_noise_bcm2060(struct bwi_mac * mac)2543 bwi_rf_calc_noise_bcm2060(struct bwi_mac *mac)
2544 {
2545 /* XXX Dont know how to calc */
2546 return (BWI_NOISE_FLOOR);
2547 }
2548
2549 static uint16_t
bwi_rf_lo_measure_11b(struct bwi_mac * mac)2550 bwi_rf_lo_measure_11b(struct bwi_mac *mac)
2551 {
2552 uint16_t val;
2553 int i;
2554
2555 val = 0;
2556 for (i = 0; i < 10; ++i) {
2557 PHY_WRITE(mac, 0x15, 0xafa0);
2558 DELAY(1);
2559 PHY_WRITE(mac, 0x15, 0xefa0);
2560 DELAY(10);
2561 PHY_WRITE(mac, 0x15, 0xffa0);
2562 DELAY(40);
2563
2564 val += PHY_READ(mac, 0x2c);
2565 }
2566 return val;
2567 }
2568
2569 static void
bwi_rf_lo_update_11b(struct bwi_mac * mac)2570 bwi_rf_lo_update_11b(struct bwi_mac *mac)
2571 {
2572 struct bwi_softc *sc = mac->mac_sc;
2573 struct bwi_rf *rf = &mac->mac_rf;
2574 struct rf_saveregs regs;
2575 uint16_t rf_val, phy_val, min_val, val;
2576 uint16_t rf52, bphy_ctrl;
2577 int i;
2578
2579 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_INIT, "%s enter\n", __func__);
2580
2581 bzero(®s, sizeof(regs));
2582 bphy_ctrl = 0;
2583
2584 /*
2585 * Save RF/PHY registers for later restoration
2586 */
2587 SAVE_PHY_REG(mac, ®s, 15);
2588 rf52 = RF_READ(mac, 0x52) & 0xfff0;
2589 if (rf->rf_type == BWI_RF_T_BCM2050) {
2590 SAVE_PHY_REG(mac, ®s, 0a);
2591 SAVE_PHY_REG(mac, ®s, 2a);
2592 SAVE_PHY_REG(mac, ®s, 35);
2593 SAVE_PHY_REG(mac, ®s, 03);
2594 SAVE_PHY_REG(mac, ®s, 01);
2595 SAVE_PHY_REG(mac, ®s, 30);
2596
2597 SAVE_RF_REG(mac, ®s, 43);
2598 SAVE_RF_REG(mac, ®s, 7a);
2599
2600 bphy_ctrl = CSR_READ_2(sc, BWI_BPHY_CTRL);
2601
2602 SAVE_RF_REG(mac, ®s, 52);
2603 regs.rf_52 &= 0xf0;
2604
2605 PHY_WRITE(mac, 0x30, 0xff);
2606 CSR_WRITE_2(sc, BWI_PHY_CTRL, 0x3f3f);
2607 PHY_WRITE(mac, 0x35, regs.phy_35 & 0xff7f);
2608 RF_WRITE(mac, 0x7a, regs.rf_7a & 0xfff0);
2609 }
2610
2611 PHY_WRITE(mac, 0x15, 0xb000);
2612
2613 if (rf->rf_type == BWI_RF_T_BCM2050) {
2614 PHY_WRITE(mac, 0x2b, 0x203);
2615 PHY_WRITE(mac, 0x2a, 0x8a3);
2616 } else {
2617 PHY_WRITE(mac, 0x2b, 0x1402);
2618 }
2619
2620 /*
2621 * Setup RF signal
2622 */
2623 rf_val = 0;
2624 min_val = UINT16_MAX;
2625
2626 for (i = 0; i < 4; ++i) {
2627 RF_WRITE(mac, 0x52, rf52 | i);
2628 bwi_rf_lo_measure_11b(mac); /* Ignore return value */
2629 }
2630 for (i = 0; i < 10; ++i) {
2631 RF_WRITE(mac, 0x52, rf52 | i);
2632
2633 val = bwi_rf_lo_measure_11b(mac) / 10;
2634 if (val < min_val) {
2635 min_val = val;
2636 rf_val = i;
2637 }
2638 }
2639 RF_WRITE(mac, 0x52, rf52 | rf_val);
2640
2641 /*
2642 * Setup PHY signal
2643 */
2644 phy_val = 0;
2645 min_val = UINT16_MAX;
2646
2647 for (i = -4; i < 5; i += 2) {
2648 int j;
2649
2650 for (j = -4; j < 5; j += 2) {
2651 uint16_t phy2f;
2652
2653 phy2f = (0x100 * i) + j;
2654 if (j < 0)
2655 phy2f += 0x100;
2656 PHY_WRITE(mac, 0x2f, phy2f);
2657
2658 val = bwi_rf_lo_measure_11b(mac) / 10;
2659 if (val < min_val) {
2660 min_val = val;
2661 phy_val = phy2f;
2662 }
2663 }
2664 }
2665 PHY_WRITE(mac, 0x2f, phy_val + 0x101);
2666
2667 /*
2668 * Restore saved RF/PHY registers
2669 */
2670 if (rf->rf_type == BWI_RF_T_BCM2050) {
2671 RESTORE_PHY_REG(mac, ®s, 0a);
2672 RESTORE_PHY_REG(mac, ®s, 2a);
2673 RESTORE_PHY_REG(mac, ®s, 35);
2674 RESTORE_PHY_REG(mac, ®s, 03);
2675 RESTORE_PHY_REG(mac, ®s, 01);
2676 RESTORE_PHY_REG(mac, ®s, 30);
2677
2678 RESTORE_RF_REG(mac, ®s, 43);
2679 RESTORE_RF_REG(mac, ®s, 7a);
2680
2681 RF_FILT_SETBITS(mac, 0x52, 0xf, regs.rf_52);
2682
2683 CSR_WRITE_2(sc, BWI_BPHY_CTRL, bphy_ctrl);
2684 }
2685 RESTORE_PHY_REG(mac, ®s, 15);
2686
2687 bwi_rf_work_around(mac, rf->rf_curchan);
2688 }
2689