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sys/dev/bwi/bwirf.c
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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: releng/11.2/sys/dev/bwi/bwirf.c 331722 2018-03-29 02:50:57Z eadler $"); 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 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 * 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 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 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 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 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 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 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 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 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 553 bwi_rf_off_11bg(struct bwi_mac *mac) 554 { 555 PHY_WRITE(mac, 0x15, 0xaa00); 556 } 557 558 static void 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 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 * 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 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 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 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 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 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 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 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)nitems(rf_calibvals), ("idx %d", idx)); 1022 1023 calib = rf_calibvals[idx] << 1; 1024 if (val & BWI_RFR_BBP_ATTEN_CALIB_BIT) 1025 calib |= 0x1; 1026 calib |= 0x20; 1027 1028 return calib; 1029 } 1030 1031 static __inline int32_t 1032 _bwi_adjust_devide(int32_t num, int32_t den) 1033 { 1034 if (num < 0) 1035 return (num / den); 1036 else 1037 return (num + den / 2) / den; 1038 } 1039 1040 /* 1041 * http://bcm-specs.sipsolutions.net/TSSI_to_DBM_Table 1042 * "calculating table entries" 1043 */ 1044 static int 1045 bwi_rf_calc_txpower(int8_t *txpwr, uint8_t idx, const int16_t pa_params[]) 1046 { 1047 int32_t m1, m2, f, dbm; 1048 int i; 1049 1050 m1 = _bwi_adjust_devide(16 * pa_params[0] + idx * pa_params[1], 32); 1051 m2 = imax(_bwi_adjust_devide(32768 + idx * pa_params[2], 256), 1); 1052 1053 #define ITER_MAX 16 1054 1055 f = 256; 1056 for (i = 0; i < ITER_MAX; ++i) { 1057 int32_t q, d; 1058 1059 q = _bwi_adjust_devide( 1060 f * 4096 - _bwi_adjust_devide(m2 * f, 16) * f, 2048); 1061 d = abs(q - f); 1062 f = q; 1063 1064 if (d < 2) 1065 break; 1066 } 1067 if (i == ITER_MAX) 1068 return EINVAL; 1069 1070 #undef ITER_MAX 1071 1072 dbm = _bwi_adjust_devide(m1 * f, 8192); 1073 if (dbm < -127) 1074 dbm = -127; 1075 else if (dbm > 128) 1076 dbm = 128; 1077 1078 *txpwr = dbm; 1079 return 0; 1080 } 1081 1082 int 1083 bwi_rf_map_txpower(struct bwi_mac *mac) 1084 { 1085 struct bwi_softc *sc = mac->mac_sc; 1086 struct bwi_rf *rf = &mac->mac_rf; 1087 struct bwi_phy *phy = &mac->mac_phy; 1088 uint16_t sprom_ofs, val, mask; 1089 int16_t pa_params[3]; 1090 int error = 0, i, ant_gain, reg_txpower_max; 1091 1092 /* 1093 * Find out max TX power 1094 */ 1095 val = bwi_read_sprom(sc, BWI_SPROM_MAX_TXPWR); 1096 if (phy->phy_mode == IEEE80211_MODE_11A) { 1097 rf->rf_txpower_max = __SHIFTOUT(val, 1098 BWI_SPROM_MAX_TXPWR_MASK_11A); 1099 } else { 1100 rf->rf_txpower_max = __SHIFTOUT(val, 1101 BWI_SPROM_MAX_TXPWR_MASK_11BG); 1102 1103 if ((sc->sc_card_flags & BWI_CARD_F_PA_GPIO9) && 1104 phy->phy_mode == IEEE80211_MODE_11G) 1105 rf->rf_txpower_max -= 3; 1106 } 1107 if (rf->rf_txpower_max <= 0) { 1108 device_printf(sc->sc_dev, "invalid max txpower in sprom\n"); 1109 rf->rf_txpower_max = 74; 1110 } 1111 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1112 "max txpower from sprom: %d dBm\n", rf->rf_txpower_max); 1113 1114 /* 1115 * Find out region/domain max TX power, which is adjusted 1116 * by antenna gain and 1.5 dBm fluctuation as mentioned 1117 * in v3 spec. 1118 */ 1119 val = bwi_read_sprom(sc, BWI_SPROM_ANT_GAIN); 1120 if (phy->phy_mode == IEEE80211_MODE_11A) 1121 ant_gain = __SHIFTOUT(val, BWI_SPROM_ANT_GAIN_MASK_11A); 1122 else 1123 ant_gain = __SHIFTOUT(val, BWI_SPROM_ANT_GAIN_MASK_11BG); 1124 if (ant_gain == 0xff) { 1125 device_printf(sc->sc_dev, "invalid antenna gain in sprom\n"); 1126 ant_gain = 2; 1127 } 1128 ant_gain *= 4; 1129 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1130 "ant gain %d dBm\n", ant_gain); 1131 1132 reg_txpower_max = 90 - ant_gain - 6; /* XXX magic number */ 1133 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1134 "region/domain max txpower %d dBm\n", reg_txpower_max); 1135 1136 /* 1137 * Force max TX power within region/domain TX power limit 1138 */ 1139 if (rf->rf_txpower_max > reg_txpower_max) 1140 rf->rf_txpower_max = reg_txpower_max; 1141 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1142 "max txpower %d dBm\n", rf->rf_txpower_max); 1143 1144 /* 1145 * Create TSSI to TX power mapping 1146 */ 1147 1148 if (sc->sc_bbp_id == BWI_BBPID_BCM4301 && 1149 rf->rf_type != BWI_RF_T_BCM2050) { 1150 rf->rf_idle_tssi0 = BWI_DEFAULT_IDLE_TSSI; 1151 bcopy(bwi_txpower_map_11b, rf->rf_txpower_map0, 1152 sizeof(rf->rf_txpower_map0)); 1153 goto back; 1154 } 1155 1156 #define IS_VALID_PA_PARAM(p) ((p) != 0 && (p) != -1) 1157 1158 /* 1159 * Extract PA parameters 1160 */ 1161 if (phy->phy_mode == IEEE80211_MODE_11A) 1162 sprom_ofs = BWI_SPROM_PA_PARAM_11A; 1163 else 1164 sprom_ofs = BWI_SPROM_PA_PARAM_11BG; 1165 for (i = 0; i < nitems(pa_params); ++i) 1166 pa_params[i] = (int16_t)bwi_read_sprom(sc, sprom_ofs + (i * 2)); 1167 1168 for (i = 0; i < nitems(pa_params); ++i) { 1169 /* 1170 * If one of the PA parameters from SPROM is not valid, 1171 * fall back to the default values, if there are any. 1172 */ 1173 if (!IS_VALID_PA_PARAM(pa_params[i])) { 1174 const int8_t *txpower_map; 1175 1176 if (phy->phy_mode == IEEE80211_MODE_11A) { 1177 device_printf(sc->sc_dev, 1178 "no tssi2dbm table for 11a PHY\n"); 1179 return ENXIO; 1180 } 1181 1182 if (phy->phy_mode == IEEE80211_MODE_11G) { 1183 DPRINTF(sc, 1184 BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1185 "%s\n", "use default 11g TSSI map"); 1186 txpower_map = bwi_txpower_map_11g; 1187 } else { 1188 DPRINTF(sc, 1189 BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1190 "%s\n", "use default 11b TSSI map"); 1191 txpower_map = bwi_txpower_map_11b; 1192 } 1193 1194 rf->rf_idle_tssi0 = BWI_DEFAULT_IDLE_TSSI; 1195 bcopy(txpower_map, rf->rf_txpower_map0, 1196 sizeof(rf->rf_txpower_map0)); 1197 goto back; 1198 } 1199 } 1200 1201 /* 1202 * All of the PA parameters from SPROM are valid. 1203 */ 1204 1205 /* 1206 * Extract idle TSSI from SPROM. 1207 */ 1208 val = bwi_read_sprom(sc, BWI_SPROM_IDLE_TSSI); 1209 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1210 "sprom idle tssi: 0x%04x\n", val); 1211 1212 if (phy->phy_mode == IEEE80211_MODE_11A) 1213 mask = BWI_SPROM_IDLE_TSSI_MASK_11A; 1214 else 1215 mask = BWI_SPROM_IDLE_TSSI_MASK_11BG; 1216 1217 rf->rf_idle_tssi0 = (int)__SHIFTOUT(val, mask); 1218 if (!IS_VALID_PA_PARAM(rf->rf_idle_tssi0)) 1219 rf->rf_idle_tssi0 = 62; 1220 1221 #undef IS_VALID_PA_PARAM 1222 1223 /* 1224 * Calculate TX power map, which is indexed by TSSI 1225 */ 1226 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER, 1227 "%s\n", "TSSI-TX power map:"); 1228 for (i = 0; i < BWI_TSSI_MAX; ++i) { 1229 error = bwi_rf_calc_txpower(&rf->rf_txpower_map0[i], i, 1230 pa_params); 1231 if (error) { 1232 device_printf(sc->sc_dev, 1233 "bwi_rf_calc_txpower failed\n"); 1234 break; 1235 } 1236 1237 #ifdef BWI_DEBUG 1238 if (i != 0 && i % 8 == 0) { 1239 _DPRINTF(sc, 1240 BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER, 1241 "%s\n", ""); 1242 } 1243 #endif 1244 _DPRINTF(sc, BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER, 1245 "%d ", rf->rf_txpower_map0[i]); 1246 } 1247 _DPRINTF(sc, BWI_DBG_RF | BWI_DBG_ATTACH | BWI_DBG_TXPOWER, 1248 "%s\n", ""); 1249 back: 1250 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_TXPOWER | BWI_DBG_ATTACH, 1251 "idle tssi0: %d\n", rf->rf_idle_tssi0); 1252 return error; 1253 } 1254 1255 static void 1256 bwi_rf_lo_update_11g(struct bwi_mac *mac) 1257 { 1258 struct bwi_softc *sc = mac->mac_sc; 1259 struct bwi_rf *rf = &mac->mac_rf; 1260 struct bwi_phy *phy = &mac->mac_phy; 1261 struct bwi_tpctl *tpctl = &mac->mac_tpctl; 1262 struct rf_saveregs regs; 1263 uint16_t ant_div, chan_ex; 1264 uint8_t devi_ctrl; 1265 u_int orig_chan; 1266 1267 /* 1268 * Save RF/PHY registers for later restoration 1269 */ 1270 orig_chan = rf->rf_curchan; 1271 bzero(®s, sizeof(regs)); 1272 1273 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1274 SAVE_PHY_REG(mac, ®s, 429); 1275 SAVE_PHY_REG(mac, ®s, 802); 1276 1277 PHY_WRITE(mac, 0x429, regs.phy_429 & 0x7fff); 1278 PHY_WRITE(mac, 0x802, regs.phy_802 & 0xfffc); 1279 } 1280 1281 ant_div = CSR_READ_2(sc, BWI_RF_ANTDIV); 1282 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div | 0x8000); 1283 chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX); 1284 1285 SAVE_PHY_REG(mac, ®s, 15); 1286 SAVE_PHY_REG(mac, ®s, 2a); 1287 SAVE_PHY_REG(mac, ®s, 35); 1288 SAVE_PHY_REG(mac, ®s, 60); 1289 SAVE_RF_REG(mac, ®s, 43); 1290 SAVE_RF_REG(mac, ®s, 7a); 1291 SAVE_RF_REG(mac, ®s, 52); 1292 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1293 SAVE_PHY_REG(mac, ®s, 811); 1294 SAVE_PHY_REG(mac, ®s, 812); 1295 SAVE_PHY_REG(mac, ®s, 814); 1296 SAVE_PHY_REG(mac, ®s, 815); 1297 } 1298 1299 /* Force to channel 6 */ 1300 bwi_rf_set_chan(mac, 6, 0); 1301 1302 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1303 PHY_WRITE(mac, 0x429, regs.phy_429 & 0x7fff); 1304 PHY_WRITE(mac, 0x802, regs.phy_802 & 0xfffc); 1305 bwi_mac_dummy_xmit(mac); 1306 } 1307 RF_WRITE(mac, 0x43, 0x6); 1308 1309 bwi_phy_set_bbp_atten(mac, 2); 1310 1311 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, 0); 1312 1313 PHY_WRITE(mac, 0x2e, 0x7f); 1314 PHY_WRITE(mac, 0x80f, 0x78); 1315 PHY_WRITE(mac, 0x35, regs.phy_35 & 0xff7f); 1316 RF_WRITE(mac, 0x7a, regs.rf_7a & 0xfff0); 1317 PHY_WRITE(mac, 0x2b, 0x203); 1318 PHY_WRITE(mac, 0x2a, 0x8a3); 1319 1320 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1321 PHY_WRITE(mac, 0x814, regs.phy_814 | 0x3); 1322 PHY_WRITE(mac, 0x815, regs.phy_815 & 0xfffc); 1323 PHY_WRITE(mac, 0x811, 0x1b3); 1324 PHY_WRITE(mac, 0x812, 0xb2); 1325 } 1326 1327 if ((sc->sc_flags & BWI_F_RUNNING) == 0) 1328 tpctl->tp_ctrl2 = bwi_rf_get_tp_ctrl2(mac); 1329 PHY_WRITE(mac, 0x80f, 0x8078); 1330 1331 /* 1332 * Measure all RF LO 1333 */ 1334 devi_ctrl = _bwi_rf_lo_update_11g(mac, regs.rf_7a); 1335 1336 /* 1337 * Restore saved RF/PHY registers 1338 */ 1339 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1340 PHY_WRITE(mac, 0x15, 0xe300); 1341 PHY_WRITE(mac, 0x812, (devi_ctrl << 8) | 0xa0); 1342 DELAY(5); 1343 PHY_WRITE(mac, 0x812, (devi_ctrl << 8) | 0xa2); 1344 DELAY(2); 1345 PHY_WRITE(mac, 0x812, (devi_ctrl << 8) | 0xa3); 1346 } else { 1347 PHY_WRITE(mac, 0x15, devi_ctrl | 0xefa0); 1348 } 1349 1350 if ((sc->sc_flags & BWI_F_RUNNING) == 0) 1351 tpctl = NULL; 1352 bwi_rf_lo_adjust(mac, tpctl); 1353 1354 PHY_WRITE(mac, 0x2e, 0x807f); 1355 if (phy->phy_flags & BWI_PHY_F_LINKED) 1356 PHY_WRITE(mac, 0x2f, 0x202); 1357 else 1358 PHY_WRITE(mac, 0x2f, 0x101); 1359 1360 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, chan_ex); 1361 1362 RESTORE_PHY_REG(mac, ®s, 15); 1363 RESTORE_PHY_REG(mac, ®s, 2a); 1364 RESTORE_PHY_REG(mac, ®s, 35); 1365 RESTORE_PHY_REG(mac, ®s, 60); 1366 1367 RESTORE_RF_REG(mac, ®s, 43); 1368 RESTORE_RF_REG(mac, ®s, 7a); 1369 1370 regs.rf_52 &= 0xf0; 1371 regs.rf_52 |= (RF_READ(mac, 0x52) & 0xf); 1372 RF_WRITE(mac, 0x52, regs.rf_52); 1373 1374 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div); 1375 1376 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1377 RESTORE_PHY_REG(mac, ®s, 811); 1378 RESTORE_PHY_REG(mac, ®s, 812); 1379 RESTORE_PHY_REG(mac, ®s, 814); 1380 RESTORE_PHY_REG(mac, ®s, 815); 1381 RESTORE_PHY_REG(mac, ®s, 429); 1382 RESTORE_PHY_REG(mac, ®s, 802); 1383 } 1384 1385 bwi_rf_set_chan(mac, orig_chan, 1); 1386 } 1387 1388 static uint32_t 1389 bwi_rf_lo_devi_measure(struct bwi_mac *mac, uint16_t ctrl) 1390 { 1391 struct bwi_phy *phy = &mac->mac_phy; 1392 uint32_t devi = 0; 1393 int i; 1394 1395 if (phy->phy_flags & BWI_PHY_F_LINKED) 1396 ctrl <<= 8; 1397 1398 for (i = 0; i < 8; ++i) { 1399 if (phy->phy_flags & BWI_PHY_F_LINKED) { 1400 PHY_WRITE(mac, 0x15, 0xe300); 1401 PHY_WRITE(mac, 0x812, ctrl | 0xb0); 1402 DELAY(5); 1403 PHY_WRITE(mac, 0x812, ctrl | 0xb2); 1404 DELAY(2); 1405 PHY_WRITE(mac, 0x812, ctrl | 0xb3); 1406 DELAY(4); 1407 PHY_WRITE(mac, 0x15, 0xf300); 1408 } else { 1409 PHY_WRITE(mac, 0x15, ctrl | 0xefa0); 1410 DELAY(2); 1411 PHY_WRITE(mac, 0x15, ctrl | 0xefe0); 1412 DELAY(4); 1413 PHY_WRITE(mac, 0x15, ctrl | 0xffe0); 1414 } 1415 DELAY(8); 1416 devi += PHY_READ(mac, 0x2d); 1417 } 1418 return devi; 1419 } 1420 1421 static uint16_t 1422 bwi_rf_get_tp_ctrl2(struct bwi_mac *mac) 1423 { 1424 uint32_t devi_min; 1425 uint16_t tp_ctrl2 = 0; 1426 int i; 1427 1428 RF_WRITE(mac, 0x52, 0); 1429 DELAY(10); 1430 devi_min = bwi_rf_lo_devi_measure(mac, 0); 1431 1432 for (i = 0; i < 16; ++i) { 1433 uint32_t devi; 1434 1435 RF_WRITE(mac, 0x52, i); 1436 DELAY(10); 1437 devi = bwi_rf_lo_devi_measure(mac, 0); 1438 1439 if (devi < devi_min) { 1440 devi_min = devi; 1441 tp_ctrl2 = i; 1442 } 1443 } 1444 return tp_ctrl2; 1445 } 1446 1447 static uint8_t 1448 _bwi_rf_lo_update_11g(struct bwi_mac *mac, uint16_t orig_rf7a) 1449 { 1450 #define RF_ATTEN_LISTSZ 14 1451 #define BBP_ATTEN_MAX 4 /* half */ 1452 1453 static const int rf_atten_list[RF_ATTEN_LISTSZ] = 1454 { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8, 1, 2, 3, 4 }; 1455 static const int rf_atten_init_list[RF_ATTEN_LISTSZ] = 1456 { 0, 3, 1, 5, 7, 3, 2, 0, 4, 6, -1, -1, -1, -1 }; 1457 static const int rf_lo_measure_order[RF_ATTEN_LISTSZ] = 1458 { 3, 1, 5, 7, 9, 2, 0, 4, 6, 8, 10, 11, 12, 13 }; 1459 1460 struct bwi_softc *sc = mac->mac_sc; 1461 struct bwi_rf_lo lo_save, *lo; 1462 uint8_t devi_ctrl = 0; 1463 int idx, adj_rf7a = 0; 1464 1465 bzero(&lo_save, sizeof(lo_save)); 1466 for (idx = 0; idx < RF_ATTEN_LISTSZ; ++idx) { 1467 int init_rf_atten = rf_atten_init_list[idx]; 1468 int rf_atten = rf_atten_list[idx]; 1469 int bbp_atten; 1470 1471 for (bbp_atten = 0; bbp_atten < BBP_ATTEN_MAX; ++bbp_atten) { 1472 uint16_t tp_ctrl2, rf7a; 1473 1474 if ((sc->sc_flags & BWI_F_RUNNING) == 0) { 1475 if (idx == 0) { 1476 bzero(&lo_save, sizeof(lo_save)); 1477 } else if (init_rf_atten < 0) { 1478 lo = bwi_get_rf_lo(mac, 1479 rf_atten, 2 * bbp_atten); 1480 bcopy(lo, &lo_save, sizeof(lo_save)); 1481 } else { 1482 lo = bwi_get_rf_lo(mac, 1483 init_rf_atten, 0); 1484 bcopy(lo, &lo_save, sizeof(lo_save)); 1485 } 1486 1487 devi_ctrl = 0; 1488 adj_rf7a = 0; 1489 1490 /* 1491 * XXX 1492 * Linux driver overflows 'val' 1493 */ 1494 if (init_rf_atten >= 0) { 1495 int val; 1496 1497 val = rf_atten * 2 + bbp_atten; 1498 if (val > 14) { 1499 adj_rf7a = 1; 1500 if (val > 17) 1501 devi_ctrl = 1; 1502 if (val > 19) 1503 devi_ctrl = 2; 1504 } 1505 } 1506 } else { 1507 lo = bwi_get_rf_lo(mac, 1508 rf_atten, 2 * bbp_atten); 1509 if (!bwi_rf_lo_isused(mac, lo)) 1510 continue; 1511 bcopy(lo, &lo_save, sizeof(lo_save)); 1512 1513 devi_ctrl = 3; 1514 adj_rf7a = 0; 1515 } 1516 1517 RF_WRITE(mac, BWI_RFR_ATTEN, rf_atten); 1518 1519 tp_ctrl2 = mac->mac_tpctl.tp_ctrl2; 1520 if (init_rf_atten < 0) 1521 tp_ctrl2 |= (3 << 4); 1522 RF_WRITE(mac, BWI_RFR_TXPWR, tp_ctrl2); 1523 1524 DELAY(10); 1525 1526 bwi_phy_set_bbp_atten(mac, bbp_atten * 2); 1527 1528 rf7a = orig_rf7a & 0xfff0; 1529 if (adj_rf7a) 1530 rf7a |= 0x8; 1531 RF_WRITE(mac, 0x7a, rf7a); 1532 1533 lo = bwi_get_rf_lo(mac, 1534 rf_lo_measure_order[idx], bbp_atten * 2); 1535 bwi_rf_lo_measure_11g(mac, &lo_save, lo, devi_ctrl); 1536 } 1537 } 1538 return devi_ctrl; 1539 1540 #undef RF_ATTEN_LISTSZ 1541 #undef BBP_ATTEN_MAX 1542 } 1543 1544 static void 1545 bwi_rf_lo_measure_11g(struct bwi_mac *mac, const struct bwi_rf_lo *src_lo, 1546 struct bwi_rf_lo *dst_lo, uint8_t devi_ctrl) 1547 { 1548 #define LO_ADJUST_MIN 1 1549 #define LO_ADJUST_MAX 8 1550 #define LO_ADJUST(hi, lo) { .ctrl_hi = hi, .ctrl_lo = lo } 1551 static const struct bwi_rf_lo rf_lo_adjust[LO_ADJUST_MAX] = { 1552 LO_ADJUST(1, 1), 1553 LO_ADJUST(1, 0), 1554 LO_ADJUST(1, -1), 1555 LO_ADJUST(0, -1), 1556 LO_ADJUST(-1, -1), 1557 LO_ADJUST(-1, 0), 1558 LO_ADJUST(-1, 1), 1559 LO_ADJUST(0, 1) 1560 }; 1561 #undef LO_ADJUST 1562 1563 struct bwi_rf_lo lo_min; 1564 uint32_t devi_min; 1565 int found, loop_count, adjust_state; 1566 1567 bcopy(src_lo, &lo_min, sizeof(lo_min)); 1568 RF_LO_WRITE(mac, &lo_min); 1569 devi_min = bwi_rf_lo_devi_measure(mac, devi_ctrl); 1570 1571 loop_count = 12; /* XXX */ 1572 adjust_state = 0; 1573 do { 1574 struct bwi_rf_lo lo_base; 1575 int i, fin; 1576 1577 found = 0; 1578 if (adjust_state == 0) { 1579 i = LO_ADJUST_MIN; 1580 fin = LO_ADJUST_MAX; 1581 } else if (adjust_state % 2 == 0) { 1582 i = adjust_state - 1; 1583 fin = adjust_state + 1; 1584 } else { 1585 i = adjust_state - 2; 1586 fin = adjust_state + 2; 1587 } 1588 1589 if (i < LO_ADJUST_MIN) 1590 i += LO_ADJUST_MAX; 1591 KASSERT(i <= LO_ADJUST_MAX && i >= LO_ADJUST_MIN, ("i %d", i)); 1592 1593 if (fin > LO_ADJUST_MAX) 1594 fin -= LO_ADJUST_MAX; 1595 KASSERT(fin <= LO_ADJUST_MAX && fin >= LO_ADJUST_MIN, 1596 ("fin %d", fin)); 1597 1598 bcopy(&lo_min, &lo_base, sizeof(lo_base)); 1599 for (;;) { 1600 struct bwi_rf_lo lo; 1601 1602 lo.ctrl_hi = lo_base.ctrl_hi + 1603 rf_lo_adjust[i - 1].ctrl_hi; 1604 lo.ctrl_lo = lo_base.ctrl_lo + 1605 rf_lo_adjust[i - 1].ctrl_lo; 1606 1607 if (abs(lo.ctrl_lo) < 9 && abs(lo.ctrl_hi) < 9) { 1608 uint32_t devi; 1609 1610 RF_LO_WRITE(mac, &lo); 1611 devi = bwi_rf_lo_devi_measure(mac, devi_ctrl); 1612 if (devi < devi_min) { 1613 devi_min = devi; 1614 adjust_state = i; 1615 found = 1; 1616 bcopy(&lo, &lo_min, sizeof(lo_min)); 1617 } 1618 } 1619 if (i == fin) 1620 break; 1621 if (i == LO_ADJUST_MAX) 1622 i = LO_ADJUST_MIN; 1623 else 1624 ++i; 1625 } 1626 } while (loop_count-- && found); 1627 1628 bcopy(&lo_min, dst_lo, sizeof(*dst_lo)); 1629 1630 #undef LO_ADJUST_MIN 1631 #undef LO_ADJUST_MAX 1632 } 1633 1634 static void 1635 bwi_rf_calc_nrssi_slope_11b(struct bwi_mac *mac) 1636 { 1637 #define SAVE_RF_MAX 3 1638 #define SAVE_PHY_MAX 8 1639 1640 static const uint16_t save_rf_regs[SAVE_RF_MAX] = 1641 { 0x7a, 0x52, 0x43 }; 1642 static const uint16_t save_phy_regs[SAVE_PHY_MAX] = 1643 { 0x30, 0x26, 0x15, 0x2a, 0x20, 0x5a, 0x59, 0x58 }; 1644 1645 struct bwi_softc *sc = mac->mac_sc; 1646 struct bwi_rf *rf = &mac->mac_rf; 1647 struct bwi_phy *phy = &mac->mac_phy; 1648 uint16_t save_rf[SAVE_RF_MAX]; 1649 uint16_t save_phy[SAVE_PHY_MAX]; 1650 uint16_t ant_div, bbp_atten, chan_ex; 1651 int16_t nrssi[2]; 1652 int i; 1653 1654 /* 1655 * Save RF/PHY registers for later restoration 1656 */ 1657 for (i = 0; i < SAVE_RF_MAX; ++i) 1658 save_rf[i] = RF_READ(mac, save_rf_regs[i]); 1659 for (i = 0; i < SAVE_PHY_MAX; ++i) 1660 save_phy[i] = PHY_READ(mac, save_phy_regs[i]); 1661 1662 ant_div = CSR_READ_2(sc, BWI_RF_ANTDIV); 1663 bbp_atten = CSR_READ_2(sc, BWI_BBP_ATTEN); 1664 chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX); 1665 1666 /* 1667 * Calculate nrssi0 1668 */ 1669 if (phy->phy_rev >= 5) 1670 RF_CLRBITS(mac, 0x7a, 0xff80); 1671 else 1672 RF_CLRBITS(mac, 0x7a, 0xfff0); 1673 PHY_WRITE(mac, 0x30, 0xff); 1674 1675 CSR_WRITE_2(sc, BWI_BPHY_CTRL, 0x7f7f); 1676 1677 PHY_WRITE(mac, 0x26, 0); 1678 PHY_SETBITS(mac, 0x15, 0x20); 1679 PHY_WRITE(mac, 0x2a, 0x8a3); 1680 RF_SETBITS(mac, 0x7a, 0x80); 1681 1682 nrssi[0] = (int16_t)PHY_READ(mac, 0x27); 1683 1684 /* 1685 * Calculate nrssi1 1686 */ 1687 RF_CLRBITS(mac, 0x7a, 0xff80); 1688 if (phy->phy_version >= 2) 1689 CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0x40); 1690 else if (phy->phy_version == 0) 1691 CSR_WRITE_2(sc, BWI_BBP_ATTEN, 0x122); 1692 else 1693 CSR_CLRBITS_2(sc, BWI_RF_CHAN_EX, 0xdfff); 1694 1695 PHY_WRITE(mac, 0x20, 0x3f3f); 1696 PHY_WRITE(mac, 0x15, 0xf330); 1697 1698 RF_WRITE(mac, 0x5a, 0x60); 1699 RF_CLRBITS(mac, 0x43, 0xff0f); 1700 1701 PHY_WRITE(mac, 0x5a, 0x480); 1702 PHY_WRITE(mac, 0x59, 0x810); 1703 PHY_WRITE(mac, 0x58, 0xd); 1704 1705 DELAY(20); 1706 1707 nrssi[1] = (int16_t)PHY_READ(mac, 0x27); 1708 1709 /* 1710 * Restore saved RF/PHY registers 1711 */ 1712 PHY_WRITE(mac, save_phy_regs[0], save_phy[0]); 1713 RF_WRITE(mac, save_rf_regs[0], save_rf[0]); 1714 1715 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div); 1716 1717 for (i = 1; i < 4; ++i) 1718 PHY_WRITE(mac, save_phy_regs[i], save_phy[i]); 1719 1720 bwi_rf_work_around(mac, rf->rf_curchan); 1721 1722 if (phy->phy_version != 0) 1723 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, chan_ex); 1724 1725 for (; i < SAVE_PHY_MAX; ++i) 1726 PHY_WRITE(mac, save_phy_regs[i], save_phy[i]); 1727 1728 for (i = 1; i < SAVE_RF_MAX; ++i) 1729 RF_WRITE(mac, save_rf_regs[i], save_rf[i]); 1730 1731 /* 1732 * Install calculated narrow RSSI values 1733 */ 1734 if (nrssi[0] == nrssi[1]) 1735 rf->rf_nrssi_slope = 0x10000; 1736 else 1737 rf->rf_nrssi_slope = 0x400000 / (nrssi[0] - nrssi[1]); 1738 if (nrssi[0] <= -4) { 1739 rf->rf_nrssi[0] = nrssi[0]; 1740 rf->rf_nrssi[1] = nrssi[1]; 1741 } 1742 1743 #undef SAVE_RF_MAX 1744 #undef SAVE_PHY_MAX 1745 } 1746 1747 static void 1748 bwi_rf_set_nrssi_ofs_11g(struct bwi_mac *mac) 1749 { 1750 #define SAVE_RF_MAX 2 1751 #define SAVE_PHY_COMM_MAX 10 1752 #define SAVE_PHY6_MAX 8 1753 1754 static const uint16_t save_rf_regs[SAVE_RF_MAX] = 1755 { 0x7a, 0x43 }; 1756 static const uint16_t save_phy_comm_regs[SAVE_PHY_COMM_MAX] = { 1757 0x0001, 0x0811, 0x0812, 0x0814, 1758 0x0815, 0x005a, 0x0059, 0x0058, 1759 0x000a, 0x0003 1760 }; 1761 static const uint16_t save_phy6_regs[SAVE_PHY6_MAX] = { 1762 0x002e, 0x002f, 0x080f, 0x0810, 1763 0x0801, 0x0060, 0x0014, 0x0478 1764 }; 1765 1766 struct bwi_phy *phy = &mac->mac_phy; 1767 uint16_t save_rf[SAVE_RF_MAX]; 1768 uint16_t save_phy_comm[SAVE_PHY_COMM_MAX]; 1769 uint16_t save_phy6[SAVE_PHY6_MAX]; 1770 uint16_t rf7b = 0xffff; 1771 int16_t nrssi; 1772 int i, phy6_idx = 0; 1773 1774 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i) 1775 save_phy_comm[i] = PHY_READ(mac, save_phy_comm_regs[i]); 1776 for (i = 0; i < SAVE_RF_MAX; ++i) 1777 save_rf[i] = RF_READ(mac, save_rf_regs[i]); 1778 1779 PHY_CLRBITS(mac, 0x429, 0x8000); 1780 PHY_FILT_SETBITS(mac, 0x1, 0x3fff, 0x4000); 1781 PHY_SETBITS(mac, 0x811, 0xc); 1782 PHY_FILT_SETBITS(mac, 0x812, 0xfff3, 0x4); 1783 PHY_CLRBITS(mac, 0x802, 0x3); 1784 1785 if (phy->phy_rev >= 6) { 1786 for (i = 0; i < SAVE_PHY6_MAX; ++i) 1787 save_phy6[i] = PHY_READ(mac, save_phy6_regs[i]); 1788 1789 PHY_WRITE(mac, 0x2e, 0); 1790 PHY_WRITE(mac, 0x2f, 0); 1791 PHY_WRITE(mac, 0x80f, 0); 1792 PHY_WRITE(mac, 0x810, 0); 1793 PHY_SETBITS(mac, 0x478, 0x100); 1794 PHY_SETBITS(mac, 0x801, 0x40); 1795 PHY_SETBITS(mac, 0x60, 0x40); 1796 PHY_SETBITS(mac, 0x14, 0x200); 1797 } 1798 1799 RF_SETBITS(mac, 0x7a, 0x70); 1800 RF_SETBITS(mac, 0x7a, 0x80); 1801 1802 DELAY(30); 1803 1804 nrssi = bwi_nrssi_11g(mac); 1805 if (nrssi == 31) { 1806 for (i = 7; i >= 4; --i) { 1807 RF_WRITE(mac, 0x7b, i); 1808 DELAY(20); 1809 nrssi = bwi_nrssi_11g(mac); 1810 if (nrssi < 31 && rf7b == 0xffff) 1811 rf7b = i; 1812 } 1813 if (rf7b == 0xffff) 1814 rf7b = 4; 1815 } else { 1816 struct bwi_gains gains; 1817 1818 RF_CLRBITS(mac, 0x7a, 0xff80); 1819 1820 PHY_SETBITS(mac, 0x814, 0x1); 1821 PHY_CLRBITS(mac, 0x815, 0x1); 1822 PHY_SETBITS(mac, 0x811, 0xc); 1823 PHY_SETBITS(mac, 0x812, 0xc); 1824 PHY_SETBITS(mac, 0x811, 0x30); 1825 PHY_SETBITS(mac, 0x812, 0x30); 1826 PHY_WRITE(mac, 0x5a, 0x480); 1827 PHY_WRITE(mac, 0x59, 0x810); 1828 PHY_WRITE(mac, 0x58, 0xd); 1829 if (phy->phy_version == 0) 1830 PHY_WRITE(mac, 0x3, 0x122); 1831 else 1832 PHY_SETBITS(mac, 0xa, 0x2000); 1833 PHY_SETBITS(mac, 0x814, 0x4); 1834 PHY_CLRBITS(mac, 0x815, 0x4); 1835 PHY_FILT_SETBITS(mac, 0x3, 0xff9f, 0x40); 1836 RF_SETBITS(mac, 0x7a, 0xf); 1837 1838 bzero(&gains, sizeof(gains)); 1839 gains.tbl_gain1 = 3; 1840 gains.tbl_gain2 = 0; 1841 gains.phy_gain = 1; 1842 bwi_set_gains(mac, &gains); 1843 1844 RF_FILT_SETBITS(mac, 0x43, 0xf0, 0xf); 1845 DELAY(30); 1846 1847 nrssi = bwi_nrssi_11g(mac); 1848 if (nrssi == -32) { 1849 for (i = 0; i < 4; ++i) { 1850 RF_WRITE(mac, 0x7b, i); 1851 DELAY(20); 1852 nrssi = bwi_nrssi_11g(mac); 1853 if (nrssi > -31 && rf7b == 0xffff) 1854 rf7b = i; 1855 } 1856 if (rf7b == 0xffff) 1857 rf7b = 3; 1858 } else { 1859 rf7b = 0; 1860 } 1861 } 1862 RF_WRITE(mac, 0x7b, rf7b); 1863 1864 /* 1865 * Restore saved RF/PHY registers 1866 */ 1867 if (phy->phy_rev >= 6) { 1868 for (phy6_idx = 0; phy6_idx < 4; ++phy6_idx) { 1869 PHY_WRITE(mac, save_phy6_regs[phy6_idx], 1870 save_phy6[phy6_idx]); 1871 } 1872 } 1873 1874 /* Saved PHY registers 0, 1, 2 are handled later */ 1875 for (i = 3; i < SAVE_PHY_COMM_MAX; ++i) 1876 PHY_WRITE(mac, save_phy_comm_regs[i], save_phy_comm[i]); 1877 1878 for (i = SAVE_RF_MAX - 1; i >= 0; --i) 1879 RF_WRITE(mac, save_rf_regs[i], save_rf[i]); 1880 1881 PHY_SETBITS(mac, 0x802, 0x3); 1882 PHY_SETBITS(mac, 0x429, 0x8000); 1883 1884 bwi_set_gains(mac, NULL); 1885 1886 if (phy->phy_rev >= 6) { 1887 for (; phy6_idx < SAVE_PHY6_MAX; ++phy6_idx) { 1888 PHY_WRITE(mac, save_phy6_regs[phy6_idx], 1889 save_phy6[phy6_idx]); 1890 } 1891 } 1892 1893 PHY_WRITE(mac, save_phy_comm_regs[0], save_phy_comm[0]); 1894 PHY_WRITE(mac, save_phy_comm_regs[2], save_phy_comm[2]); 1895 PHY_WRITE(mac, save_phy_comm_regs[1], save_phy_comm[1]); 1896 1897 #undef SAVE_RF_MAX 1898 #undef SAVE_PHY_COMM_MAX 1899 #undef SAVE_PHY6_MAX 1900 } 1901 1902 static void 1903 bwi_rf_calc_nrssi_slope_11g(struct bwi_mac *mac) 1904 { 1905 #define SAVE_RF_MAX 3 1906 #define SAVE_PHY_COMM_MAX 4 1907 #define SAVE_PHY3_MAX 8 1908 1909 static const uint16_t save_rf_regs[SAVE_RF_MAX] = 1910 { 0x7a, 0x52, 0x43 }; 1911 static const uint16_t save_phy_comm_regs[SAVE_PHY_COMM_MAX] = 1912 { 0x15, 0x5a, 0x59, 0x58 }; 1913 static const uint16_t save_phy3_regs[SAVE_PHY3_MAX] = { 1914 0x002e, 0x002f, 0x080f, 0x0810, 1915 0x0801, 0x0060, 0x0014, 0x0478 1916 }; 1917 1918 struct bwi_softc *sc = mac->mac_sc; 1919 struct bwi_phy *phy = &mac->mac_phy; 1920 struct bwi_rf *rf = &mac->mac_rf; 1921 uint16_t save_rf[SAVE_RF_MAX]; 1922 uint16_t save_phy_comm[SAVE_PHY_COMM_MAX]; 1923 uint16_t save_phy3[SAVE_PHY3_MAX]; 1924 uint16_t ant_div, bbp_atten, chan_ex; 1925 struct bwi_gains gains; 1926 int16_t nrssi[2]; 1927 int i, phy3_idx = 0; 1928 1929 if (rf->rf_rev >= 9) 1930 return; 1931 else if (rf->rf_rev == 8) 1932 bwi_rf_set_nrssi_ofs_11g(mac); 1933 1934 PHY_CLRBITS(mac, 0x429, 0x8000); 1935 PHY_CLRBITS(mac, 0x802, 0x3); 1936 1937 /* 1938 * Save RF/PHY registers for later restoration 1939 */ 1940 ant_div = CSR_READ_2(sc, BWI_RF_ANTDIV); 1941 CSR_SETBITS_2(sc, BWI_RF_ANTDIV, 0x8000); 1942 1943 for (i = 0; i < SAVE_RF_MAX; ++i) 1944 save_rf[i] = RF_READ(mac, save_rf_regs[i]); 1945 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i) 1946 save_phy_comm[i] = PHY_READ(mac, save_phy_comm_regs[i]); 1947 1948 bbp_atten = CSR_READ_2(sc, BWI_BBP_ATTEN); 1949 chan_ex = CSR_READ_2(sc, BWI_RF_CHAN_EX); 1950 1951 if (phy->phy_rev >= 3) { 1952 for (i = 0; i < SAVE_PHY3_MAX; ++i) 1953 save_phy3[i] = PHY_READ(mac, save_phy3_regs[i]); 1954 1955 PHY_WRITE(mac, 0x2e, 0); 1956 PHY_WRITE(mac, 0x810, 0); 1957 1958 if (phy->phy_rev == 4 || phy->phy_rev == 6 || 1959 phy->phy_rev == 7) { 1960 PHY_SETBITS(mac, 0x478, 0x100); 1961 PHY_SETBITS(mac, 0x810, 0x40); 1962 } else if (phy->phy_rev == 3 || phy->phy_rev == 5) { 1963 PHY_CLRBITS(mac, 0x810, 0x40); 1964 } 1965 1966 PHY_SETBITS(mac, 0x60, 0x40); 1967 PHY_SETBITS(mac, 0x14, 0x200); 1968 } 1969 1970 /* 1971 * Calculate nrssi0 1972 */ 1973 RF_SETBITS(mac, 0x7a, 0x70); 1974 1975 bzero(&gains, sizeof(gains)); 1976 gains.tbl_gain1 = 0; 1977 gains.tbl_gain2 = 8; 1978 gains.phy_gain = 0; 1979 bwi_set_gains(mac, &gains); 1980 1981 RF_CLRBITS(mac, 0x7a, 0xff08); 1982 if (phy->phy_rev >= 2) { 1983 PHY_FILT_SETBITS(mac, 0x811, 0xffcf, 0x30); 1984 PHY_FILT_SETBITS(mac, 0x812, 0xffcf, 0x10); 1985 } 1986 1987 RF_SETBITS(mac, 0x7a, 0x80); 1988 DELAY(20); 1989 nrssi[0] = bwi_nrssi_11g(mac); 1990 1991 /* 1992 * Calculate nrssi1 1993 */ 1994 RF_CLRBITS(mac, 0x7a, 0xff80); 1995 if (phy->phy_version >= 2) 1996 PHY_FILT_SETBITS(mac, 0x3, 0xff9f, 0x40); 1997 CSR_SETBITS_2(sc, BWI_RF_CHAN_EX, 0x2000); 1998 1999 RF_SETBITS(mac, 0x7a, 0xf); 2000 PHY_WRITE(mac, 0x15, 0xf330); 2001 if (phy->phy_rev >= 2) { 2002 PHY_FILT_SETBITS(mac, 0x812, 0xffcf, 0x20); 2003 PHY_FILT_SETBITS(mac, 0x811, 0xffcf, 0x20); 2004 } 2005 2006 bzero(&gains, sizeof(gains)); 2007 gains.tbl_gain1 = 3; 2008 gains.tbl_gain2 = 0; 2009 gains.phy_gain = 1; 2010 bwi_set_gains(mac, &gains); 2011 2012 if (rf->rf_rev == 8) { 2013 RF_WRITE(mac, 0x43, 0x1f); 2014 } else { 2015 RF_FILT_SETBITS(mac, 0x52, 0xff0f, 0x60); 2016 RF_FILT_SETBITS(mac, 0x43, 0xfff0, 0x9); 2017 } 2018 PHY_WRITE(mac, 0x5a, 0x480); 2019 PHY_WRITE(mac, 0x59, 0x810); 2020 PHY_WRITE(mac, 0x58, 0xd); 2021 DELAY(20); 2022 2023 nrssi[1] = bwi_nrssi_11g(mac); 2024 2025 /* 2026 * Install calculated narrow RSSI values 2027 */ 2028 if (nrssi[1] == nrssi[0]) 2029 rf->rf_nrssi_slope = 0x10000; 2030 else 2031 rf->rf_nrssi_slope = 0x400000 / (nrssi[0] - nrssi[1]); 2032 if (nrssi[0] >= -4) { 2033 rf->rf_nrssi[0] = nrssi[1]; 2034 rf->rf_nrssi[1] = nrssi[0]; 2035 } 2036 2037 /* 2038 * Restore saved RF/PHY registers 2039 */ 2040 if (phy->phy_rev >= 3) { 2041 for (phy3_idx = 0; phy3_idx < 4; ++phy3_idx) { 2042 PHY_WRITE(mac, save_phy3_regs[phy3_idx], 2043 save_phy3[phy3_idx]); 2044 } 2045 } 2046 if (phy->phy_rev >= 2) { 2047 PHY_CLRBITS(mac, 0x812, 0x30); 2048 PHY_CLRBITS(mac, 0x811, 0x30); 2049 } 2050 2051 for (i = 0; i < SAVE_RF_MAX; ++i) 2052 RF_WRITE(mac, save_rf_regs[i], save_rf[i]); 2053 2054 CSR_WRITE_2(sc, BWI_RF_ANTDIV, ant_div); 2055 CSR_WRITE_2(sc, BWI_BBP_ATTEN, bbp_atten); 2056 CSR_WRITE_2(sc, BWI_RF_CHAN_EX, chan_ex); 2057 2058 for (i = 0; i < SAVE_PHY_COMM_MAX; ++i) 2059 PHY_WRITE(mac, save_phy_comm_regs[i], save_phy_comm[i]); 2060 2061 bwi_rf_work_around(mac, rf->rf_curchan); 2062 PHY_SETBITS(mac, 0x802, 0x3); 2063 bwi_set_gains(mac, NULL); 2064 PHY_SETBITS(mac, 0x429, 0x8000); 2065 2066 if (phy->phy_rev >= 3) { 2067 for (; phy3_idx < SAVE_PHY3_MAX; ++phy3_idx) { 2068 PHY_WRITE(mac, save_phy3_regs[phy3_idx], 2069 save_phy3[phy3_idx]); 2070 } 2071 } 2072 2073 bwi_rf_init_sw_nrssi_table(mac); 2074 bwi_rf_set_nrssi_thr_11g(mac); 2075 2076 #undef SAVE_RF_MAX 2077 #undef SAVE_PHY_COMM_MAX 2078 #undef SAVE_PHY3_MAX 2079 } 2080 2081 static void 2082 bwi_rf_init_sw_nrssi_table(struct bwi_mac *mac) 2083 { 2084 struct bwi_rf *rf = &mac->mac_rf; 2085 int d, i; 2086 2087 d = 0x1f - rf->rf_nrssi[0]; 2088 for (i = 0; i < BWI_NRSSI_TBLSZ; ++i) { 2089 int val; 2090 2091 val = (((i - d) * rf->rf_nrssi_slope) / 0x10000) + 0x3a; 2092 if (val < 0) 2093 val = 0; 2094 else if (val > 0x3f) 2095 val = 0x3f; 2096 2097 rf->rf_nrssi_table[i] = val; 2098 } 2099 } 2100 2101 void 2102 bwi_rf_init_hw_nrssi_table(struct bwi_mac *mac, uint16_t adjust) 2103 { 2104 int i; 2105 2106 for (i = 0; i < BWI_NRSSI_TBLSZ; ++i) { 2107 int16_t val; 2108 2109 val = bwi_nrssi_read(mac, i); 2110 2111 val -= adjust; 2112 if (val < -32) 2113 val = -32; 2114 else if (val > 31) 2115 val = 31; 2116 2117 bwi_nrssi_write(mac, i, val); 2118 } 2119 } 2120 2121 static void 2122 bwi_rf_set_nrssi_thr_11b(struct bwi_mac *mac) 2123 { 2124 struct bwi_rf *rf = &mac->mac_rf; 2125 int32_t thr; 2126 2127 if (rf->rf_type != BWI_RF_T_BCM2050 || 2128 (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) == 0) 2129 return; 2130 2131 /* 2132 * Calculate nrssi threshold 2133 */ 2134 if (rf->rf_rev >= 6) { 2135 thr = (rf->rf_nrssi[1] - rf->rf_nrssi[0]) * 32; 2136 thr += 20 * (rf->rf_nrssi[0] + 1); 2137 thr /= 40; 2138 } else { 2139 thr = rf->rf_nrssi[1] - 5; 2140 } 2141 if (thr < 0) 2142 thr = 0; 2143 else if (thr > 0x3e) 2144 thr = 0x3e; 2145 2146 PHY_READ(mac, BWI_PHYR_NRSSI_THR_11B); /* dummy read */ 2147 PHY_WRITE(mac, BWI_PHYR_NRSSI_THR_11B, (((uint16_t)thr) << 8) | 0x1c); 2148 2149 if (rf->rf_rev >= 6) { 2150 PHY_WRITE(mac, 0x87, 0xe0d); 2151 PHY_WRITE(mac, 0x86, 0xc0b); 2152 PHY_WRITE(mac, 0x85, 0xa09); 2153 PHY_WRITE(mac, 0x84, 0x808); 2154 PHY_WRITE(mac, 0x83, 0x808); 2155 PHY_WRITE(mac, 0x82, 0x604); 2156 PHY_WRITE(mac, 0x81, 0x302); 2157 PHY_WRITE(mac, 0x80, 0x100); 2158 } 2159 } 2160 2161 static __inline int32_t 2162 _nrssi_threshold(const struct bwi_rf *rf, int32_t val) 2163 { 2164 val *= (rf->rf_nrssi[1] - rf->rf_nrssi[0]); 2165 val += (rf->rf_nrssi[0] << 6); 2166 if (val < 32) 2167 val += 31; 2168 else 2169 val += 32; 2170 val >>= 6; 2171 if (val < -31) 2172 val = -31; 2173 else if (val > 31) 2174 val = 31; 2175 return val; 2176 } 2177 2178 static void 2179 bwi_rf_set_nrssi_thr_11g(struct bwi_mac *mac) 2180 { 2181 int32_t thr1, thr2; 2182 uint16_t thr; 2183 2184 /* 2185 * Find the two nrssi thresholds 2186 */ 2187 if ((mac->mac_phy.phy_flags & BWI_PHY_F_LINKED) == 0 || 2188 (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) == 0) { 2189 int16_t nrssi; 2190 2191 nrssi = bwi_nrssi_read(mac, 0x20); 2192 if (nrssi >= 32) 2193 nrssi -= 64; 2194 2195 if (nrssi < 3) { 2196 thr1 = 0x2b; 2197 thr2 = 0x27; 2198 } else { 2199 thr1 = 0x2d; 2200 thr2 = 0x2b; 2201 } 2202 } else { 2203 /* TODO Interfere mode */ 2204 thr1 = _nrssi_threshold(&mac->mac_rf, 0x11); 2205 thr2 = _nrssi_threshold(&mac->mac_rf, 0xe); 2206 } 2207 2208 #define NRSSI_THR1_MASK __BITS(5, 0) 2209 #define NRSSI_THR2_MASK __BITS(11, 6) 2210 2211 thr = __SHIFTIN((uint32_t)thr1, NRSSI_THR1_MASK) | 2212 __SHIFTIN((uint32_t)thr2, NRSSI_THR2_MASK); 2213 PHY_FILT_SETBITS(mac, BWI_PHYR_NRSSI_THR_11G, 0xf000, thr); 2214 2215 #undef NRSSI_THR1_MASK 2216 #undef NRSSI_THR2_MASK 2217 } 2218 2219 void 2220 bwi_rf_clear_tssi(struct bwi_mac *mac) 2221 { 2222 /* XXX use function pointer */ 2223 if (mac->mac_phy.phy_mode == IEEE80211_MODE_11A) { 2224 /* TODO:11A */ 2225 } else { 2226 uint16_t val; 2227 int i; 2228 2229 val = __SHIFTIN(BWI_INVALID_TSSI, BWI_LO_TSSI_MASK) | 2230 __SHIFTIN(BWI_INVALID_TSSI, BWI_HI_TSSI_MASK); 2231 2232 for (i = 0; i < 2; ++i) { 2233 MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, 2234 BWI_COMM_MOBJ_TSSI_DS + (i * 2), val); 2235 } 2236 2237 for (i = 0; i < 2; ++i) { 2238 MOBJ_WRITE_2(mac, BWI_COMM_MOBJ, 2239 BWI_COMM_MOBJ_TSSI_OFDM + (i * 2), val); 2240 } 2241 } 2242 } 2243 2244 void 2245 bwi_rf_clear_state(struct bwi_rf *rf) 2246 { 2247 int i; 2248 2249 rf->rf_flags &= ~BWI_RF_CLEAR_FLAGS; 2250 bzero(rf->rf_lo, sizeof(rf->rf_lo)); 2251 bzero(rf->rf_lo_used, sizeof(rf->rf_lo_used)); 2252 2253 rf->rf_nrssi_slope = 0; 2254 rf->rf_nrssi[0] = BWI_INVALID_NRSSI; 2255 rf->rf_nrssi[1] = BWI_INVALID_NRSSI; 2256 2257 for (i = 0; i < BWI_NRSSI_TBLSZ; ++i) 2258 rf->rf_nrssi_table[i] = i; 2259 2260 rf->rf_lo_gain = 0; 2261 rf->rf_rx_gain = 0; 2262 2263 bcopy(rf->rf_txpower_map0, rf->rf_txpower_map, 2264 sizeof(rf->rf_txpower_map)); 2265 rf->rf_idle_tssi = rf->rf_idle_tssi0; 2266 } 2267 2268 static void 2269 bwi_rf_on_11a(struct bwi_mac *mac) 2270 { 2271 /* TODO:11A */ 2272 } 2273 2274 static void 2275 bwi_rf_on_11bg(struct bwi_mac *mac) 2276 { 2277 struct bwi_phy *phy = &mac->mac_phy; 2278 2279 PHY_WRITE(mac, 0x15, 0x8000); 2280 PHY_WRITE(mac, 0x15, 0xcc00); 2281 if (phy->phy_flags & BWI_PHY_F_LINKED) 2282 PHY_WRITE(mac, 0x15, 0xc0); 2283 else 2284 PHY_WRITE(mac, 0x15, 0); 2285 2286 bwi_rf_set_chan(mac, 6 /* XXX */, 1); 2287 } 2288 2289 void 2290 bwi_rf_set_ant_mode(struct bwi_mac *mac, int ant_mode) 2291 { 2292 struct bwi_softc *sc = mac->mac_sc; 2293 struct bwi_phy *phy = &mac->mac_phy; 2294 uint16_t val; 2295 2296 KASSERT(ant_mode == BWI_ANT_MODE_0 || 2297 ant_mode == BWI_ANT_MODE_1 || 2298 ant_mode == BWI_ANT_MODE_AUTO, ("ant_mode %d", ant_mode)); 2299 2300 HFLAGS_CLRBITS(mac, BWI_HFLAG_AUTO_ANTDIV); 2301 2302 if (phy->phy_mode == IEEE80211_MODE_11B) { 2303 /* NOTE: v4/v3 conflicts, take v3 */ 2304 if (mac->mac_rev == 2) 2305 val = BWI_ANT_MODE_AUTO; 2306 else 2307 val = ant_mode; 2308 val <<= 7; 2309 PHY_FILT_SETBITS(mac, 0x3e2, 0xfe7f, val); 2310 } else { /* 11a/g */ 2311 /* XXX reg/value naming */ 2312 val = ant_mode << 7; 2313 PHY_FILT_SETBITS(mac, 0x401, 0x7e7f, val); 2314 2315 if (ant_mode == BWI_ANT_MODE_AUTO) 2316 PHY_CLRBITS(mac, 0x42b, 0x100); 2317 2318 if (phy->phy_mode == IEEE80211_MODE_11A) { 2319 /* TODO:11A */ 2320 } else { /* 11g */ 2321 if (ant_mode == BWI_ANT_MODE_AUTO) 2322 PHY_SETBITS(mac, 0x48c, 0x2000); 2323 else 2324 PHY_CLRBITS(mac, 0x48c, 0x2000); 2325 2326 if (phy->phy_rev >= 2) { 2327 PHY_SETBITS(mac, 0x461, 0x10); 2328 PHY_FILT_SETBITS(mac, 0x4ad, 0xff00, 0x15); 2329 if (phy->phy_rev == 2) { 2330 PHY_WRITE(mac, 0x427, 0x8); 2331 } else { 2332 PHY_FILT_SETBITS(mac, 0x427, 2333 0xff00, 0x8); 2334 } 2335 2336 if (phy->phy_rev >= 6) 2337 PHY_WRITE(mac, 0x49b, 0xdc); 2338 } 2339 } 2340 } 2341 2342 /* XXX v4 set AUTO_ANTDIV unconditionally */ 2343 if (ant_mode == BWI_ANT_MODE_AUTO) 2344 HFLAGS_SETBITS(mac, BWI_HFLAG_AUTO_ANTDIV); 2345 2346 val = ant_mode << 8; 2347 MOBJ_FILT_SETBITS_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_TX_BEACON, 2348 0xfc3f, val); 2349 MOBJ_FILT_SETBITS_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_TX_ACK, 2350 0xfc3f, val); 2351 MOBJ_FILT_SETBITS_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_TX_PROBE_RESP, 2352 0xfc3f, val); 2353 2354 /* XXX what's these */ 2355 if (phy->phy_mode == IEEE80211_MODE_11B) 2356 CSR_SETBITS_2(sc, 0x5e, 0x4); 2357 2358 CSR_WRITE_4(sc, 0x100, 0x1000000); 2359 if (mac->mac_rev < 5) 2360 CSR_WRITE_4(sc, 0x10c, 0x1000000); 2361 2362 mac->mac_rf.rf_ant_mode = ant_mode; 2363 } 2364 2365 int 2366 bwi_rf_get_latest_tssi(struct bwi_mac *mac, int8_t tssi[], uint16_t ofs) 2367 { 2368 int i; 2369 2370 for (i = 0; i < 4; ) { 2371 uint16_t val; 2372 2373 val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, ofs + i); 2374 tssi[i++] = (int8_t)__SHIFTOUT(val, BWI_LO_TSSI_MASK); 2375 tssi[i++] = (int8_t)__SHIFTOUT(val, BWI_HI_TSSI_MASK); 2376 } 2377 2378 for (i = 0; i < 4; ++i) { 2379 if (tssi[i] == BWI_INVALID_TSSI) 2380 return EINVAL; 2381 } 2382 return 0; 2383 } 2384 2385 int 2386 bwi_rf_tssi2dbm(struct bwi_mac *mac, int8_t tssi, int8_t *txpwr) 2387 { 2388 struct bwi_rf *rf = &mac->mac_rf; 2389 int pwr_idx; 2390 2391 pwr_idx = rf->rf_idle_tssi + (int)tssi - rf->rf_base_tssi; 2392 #if 0 2393 if (pwr_idx < 0 || pwr_idx >= BWI_TSSI_MAX) 2394 return EINVAL; 2395 #else 2396 if (pwr_idx < 0) 2397 pwr_idx = 0; 2398 else if (pwr_idx >= BWI_TSSI_MAX) 2399 pwr_idx = BWI_TSSI_MAX - 1; 2400 #endif 2401 2402 *txpwr = rf->rf_txpower_map[pwr_idx]; 2403 return 0; 2404 } 2405 2406 static int 2407 bwi_rf_calc_rssi_bcm2050(struct bwi_mac *mac, const struct bwi_rxbuf_hdr *hdr) 2408 { 2409 uint16_t flags1, flags3; 2410 int rssi, lna_gain; 2411 2412 rssi = hdr->rxh_rssi; 2413 flags1 = le16toh(hdr->rxh_flags1); 2414 flags3 = le16toh(hdr->rxh_flags3); 2415 2416 if (flags1 & BWI_RXH_F1_OFDM) { 2417 if (rssi > 127) 2418 rssi -= 256; 2419 if (flags3 & BWI_RXH_F3_BCM2050_RSSI) 2420 rssi += 17; 2421 else 2422 rssi -= 4; 2423 return rssi; 2424 } 2425 2426 if (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) { 2427 struct bwi_rf *rf = &mac->mac_rf; 2428 2429 if (rssi >= BWI_NRSSI_TBLSZ) 2430 rssi = BWI_NRSSI_TBLSZ - 1; 2431 2432 rssi = ((31 - (int)rf->rf_nrssi_table[rssi]) * -131) / 128; 2433 rssi -= 67; 2434 } else { 2435 rssi = ((31 - rssi) * -149) / 128; 2436 rssi -= 68; 2437 } 2438 2439 if (mac->mac_phy.phy_mode != IEEE80211_MODE_11G) 2440 return rssi; 2441 2442 if (flags3 & BWI_RXH_F3_BCM2050_RSSI) 2443 rssi += 20; 2444 2445 lna_gain = __SHIFTOUT(le16toh(hdr->rxh_phyinfo), 2446 BWI_RXH_PHYINFO_LNAGAIN); 2447 DPRINTF(mac->mac_sc, BWI_DBG_RF | BWI_DBG_RX, 2448 "lna_gain %d, phyinfo 0x%04x\n", 2449 lna_gain, le16toh(hdr->rxh_phyinfo)); 2450 switch (lna_gain) { 2451 case 0: 2452 rssi += 27; 2453 break; 2454 case 1: 2455 rssi += 6; 2456 break; 2457 case 2: 2458 rssi += 12; 2459 break; 2460 case 3: 2461 /* 2462 * XXX 2463 * According to v3 spec, we should do _nothing_ here, 2464 * but it seems that the result RSSI will be too low 2465 * (relative to what ath(4) says). Raise it a little 2466 * bit. 2467 */ 2468 rssi += 5; 2469 break; 2470 default: 2471 panic("impossible lna gain %d", lna_gain); 2472 } 2473 return rssi; 2474 } 2475 2476 static int 2477 bwi_rf_calc_rssi_bcm2053(struct bwi_mac *mac, const struct bwi_rxbuf_hdr *hdr) 2478 { 2479 uint16_t flags1; 2480 int rssi; 2481 2482 rssi = (((int)hdr->rxh_rssi - 11) * 103) / 64; 2483 2484 flags1 = le16toh(hdr->rxh_flags1); 2485 if (flags1 & BWI_RXH_F1_BCM2053_RSSI) 2486 rssi -= 109; 2487 else 2488 rssi -= 83; 2489 return rssi; 2490 } 2491 2492 static int 2493 bwi_rf_calc_rssi_bcm2060(struct bwi_mac *mac, const struct bwi_rxbuf_hdr *hdr) 2494 { 2495 int rssi; 2496 2497 rssi = hdr->rxh_rssi; 2498 if (rssi > 127) 2499 rssi -= 256; 2500 return rssi; 2501 } 2502 2503 static int 2504 bwi_rf_calc_noise_bcm2050(struct bwi_mac *mac) 2505 { 2506 uint16_t val; 2507 int noise; 2508 2509 val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_RF_NOISE); 2510 noise = (int)val; /* XXX check bounds? */ 2511 2512 if (mac->mac_sc->sc_card_flags & BWI_CARD_F_SW_NRSSI) { 2513 struct bwi_rf *rf = &mac->mac_rf; 2514 2515 if (noise >= BWI_NRSSI_TBLSZ) 2516 noise = BWI_NRSSI_TBLSZ - 1; 2517 2518 noise = ((31 - (int)rf->rf_nrssi_table[noise]) * -131) / 128; 2519 noise -= 67; 2520 } else { 2521 noise = ((31 - noise) * -149) / 128; 2522 noise -= 68; 2523 } 2524 return noise; 2525 } 2526 2527 static int 2528 bwi_rf_calc_noise_bcm2053(struct bwi_mac *mac) 2529 { 2530 uint16_t val; 2531 int noise; 2532 2533 val = MOBJ_READ_2(mac, BWI_COMM_MOBJ, BWI_COMM_MOBJ_RF_NOISE); 2534 noise = (int)val; /* XXX check bounds? */ 2535 2536 noise = ((noise - 11) * 103) / 64; 2537 noise -= 109; 2538 return noise; 2539 } 2540 2541 static int 2542 bwi_rf_calc_noise_bcm2060(struct bwi_mac *mac) 2543 { 2544 /* XXX Dont know how to calc */ 2545 return (BWI_NOISE_FLOOR); 2546 } 2547 2548 static uint16_t 2549 bwi_rf_lo_measure_11b(struct bwi_mac *mac) 2550 { 2551 uint16_t val; 2552 int i; 2553 2554 val = 0; 2555 for (i = 0; i < 10; ++i) { 2556 PHY_WRITE(mac, 0x15, 0xafa0); 2557 DELAY(1); 2558 PHY_WRITE(mac, 0x15, 0xefa0); 2559 DELAY(10); 2560 PHY_WRITE(mac, 0x15, 0xffa0); 2561 DELAY(40); 2562 2563 val += PHY_READ(mac, 0x2c); 2564 } 2565 return val; 2566 } 2567 2568 static void 2569 bwi_rf_lo_update_11b(struct bwi_mac *mac) 2570 { 2571 struct bwi_softc *sc = mac->mac_sc; 2572 struct bwi_rf *rf = &mac->mac_rf; 2573 struct rf_saveregs regs; 2574 uint16_t rf_val, phy_val, min_val, val; 2575 uint16_t rf52, bphy_ctrl; 2576 int i; 2577 2578 DPRINTF(sc, BWI_DBG_RF | BWI_DBG_INIT, "%s enter\n", __func__); 2579 2580 bzero(®s, sizeof(regs)); 2581 bphy_ctrl = 0; 2582 2583 /* 2584 * Save RF/PHY registers for later restoration 2585 */ 2586 SAVE_PHY_REG(mac, ®s, 15); 2587 rf52 = RF_READ(mac, 0x52) & 0xfff0; 2588 if (rf->rf_type == BWI_RF_T_BCM2050) { 2589 SAVE_PHY_REG(mac, ®s, 0a); 2590 SAVE_PHY_REG(mac, ®s, 2a); 2591 SAVE_PHY_REG(mac, ®s, 35); 2592 SAVE_PHY_REG(mac, ®s, 03); 2593 SAVE_PHY_REG(mac, ®s, 01); 2594 SAVE_PHY_REG(mac, ®s, 30); 2595 2596 SAVE_RF_REG(mac, ®s, 43); 2597 SAVE_RF_REG(mac, ®s, 7a); 2598 2599 bphy_ctrl = CSR_READ_2(sc, BWI_BPHY_CTRL); 2600 2601 SAVE_RF_REG(mac, ®s, 52); 2602 regs.rf_52 &= 0xf0; 2603 2604 PHY_WRITE(mac, 0x30, 0xff); 2605 CSR_WRITE_2(sc, BWI_PHY_CTRL, 0x3f3f); 2606 PHY_WRITE(mac, 0x35, regs.phy_35 & 0xff7f); 2607 RF_WRITE(mac, 0x7a, regs.rf_7a & 0xfff0); 2608 } 2609 2610 PHY_WRITE(mac, 0x15, 0xb000); 2611 2612 if (rf->rf_type == BWI_RF_T_BCM2050) { 2613 PHY_WRITE(mac, 0x2b, 0x203); 2614 PHY_WRITE(mac, 0x2a, 0x8a3); 2615 } else { 2616 PHY_WRITE(mac, 0x2b, 0x1402); 2617 } 2618 2619 /* 2620 * Setup RF signal 2621 */ 2622 rf_val = 0; 2623 min_val = UINT16_MAX; 2624 2625 for (i = 0; i < 4; ++i) { 2626 RF_WRITE(mac, 0x52, rf52 | i); 2627 bwi_rf_lo_measure_11b(mac); /* Ignore return value */ 2628 } 2629 for (i = 0; i < 10; ++i) { 2630 RF_WRITE(mac, 0x52, rf52 | i); 2631 2632 val = bwi_rf_lo_measure_11b(mac) / 10; 2633 if (val < min_val) { 2634 min_val = val; 2635 rf_val = i; 2636 } 2637 } 2638 RF_WRITE(mac, 0x52, rf52 | rf_val); 2639 2640 /* 2641 * Setup PHY signal 2642 */ 2643 phy_val = 0; 2644 min_val = UINT16_MAX; 2645 2646 for (i = -4; i < 5; i += 2) { 2647 int j; 2648 2649 for (j = -4; j < 5; j += 2) { 2650 uint16_t phy2f; 2651 2652 phy2f = (0x100 * i) + j; 2653 if (j < 0) 2654 phy2f += 0x100; 2655 PHY_WRITE(mac, 0x2f, phy2f); 2656 2657 val = bwi_rf_lo_measure_11b(mac) / 10; 2658 if (val < min_val) { 2659 min_val = val; 2660 phy_val = phy2f; 2661 } 2662 } 2663 } 2664 PHY_WRITE(mac, 0x2f, phy_val + 0x101); 2665 2666 /* 2667 * Restore saved RF/PHY registers 2668 */ 2669 if (rf->rf_type == BWI_RF_T_BCM2050) { 2670 RESTORE_PHY_REG(mac, ®s, 0a); 2671 RESTORE_PHY_REG(mac, ®s, 2a); 2672 RESTORE_PHY_REG(mac, ®s, 35); 2673 RESTORE_PHY_REG(mac, ®s, 03); 2674 RESTORE_PHY_REG(mac, ®s, 01); 2675 RESTORE_PHY_REG(mac, ®s, 30); 2676 2677 RESTORE_RF_REG(mac, ®s, 43); 2678 RESTORE_RF_REG(mac, ®s, 7a); 2679 2680 RF_FILT_SETBITS(mac, 0x52, 0xf, regs.rf_52); 2681 2682 CSR_WRITE_2(sc, BWI_BPHY_CTRL, bphy_ctrl); 2683 } 2684 RESTORE_PHY_REG(mac, ®s, 15); 2685 2686 bwi_rf_work_around(mac, rf->rf_curchan); 2687 }
Cache object: 173bf38624472cda6c124a3e8c4413fc
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