atw.c revision 1.73
1 /* $NetBSD: atw.c,v 1.73 2004/07/23 10:15:13 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2002, 2003, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by David Young, by Jason R. Thorpe, and by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Device driver for the ADMtek ADM8211 802.11 MAC/BBP. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: atw.c,v 1.73 2004/07/23 10:15:13 mycroft Exp $"); 45 46 #include "bpfilter.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/callout.h> 51 #include <sys/mbuf.h> 52 #include <sys/malloc.h> 53 #include <sys/kernel.h> 54 #include <sys/socket.h> 55 #include <sys/ioctl.h> 56 #include <sys/errno.h> 57 #include <sys/device.h> 58 #include <sys/time.h> 59 60 #include <machine/endian.h> 61 62 #include <uvm/uvm_extern.h> 63 64 #include <net/if.h> 65 #include <net/if_dl.h> 66 #include <net/if_media.h> 67 #include <net/if_ether.h> 68 69 #include <net80211/ieee80211_var.h> 70 #include <net80211/ieee80211_compat.h> 71 #include <net80211/ieee80211_radiotap.h> 72 73 #if NBPFILTER > 0 74 #include <net/bpf.h> 75 #endif 76 77 #include <machine/bus.h> 78 #include <machine/intr.h> 79 80 #include <dev/ic/atwreg.h> 81 #include <dev/ic/rf3000reg.h> 82 #include <dev/ic/si4136reg.h> 83 #include <dev/ic/atwvar.h> 84 #include <dev/ic/smc93cx6var.h> 85 86 /* XXX TBD open questions 87 * 88 * 89 * When should I set DSSS PAD in reg 0x15 of RF3000? In 1-2Mbps 90 * modes only, or all modes (5.5-11 Mbps CCK modes, too?) Does the MAC 91 * handle this for me? 92 * 93 */ 94 /* device attachment 95 * 96 * print TOFS[012] 97 * 98 * device initialization 99 * 100 * clear ATW_FRCTL_MAXPSP to disable max power saving 101 * set ATW_TXBR_ALCUPDATE to enable ALC 102 * set TOFS[012]? (hope not) 103 * disable rx/tx 104 * set ATW_PAR_SWR (software reset) 105 * wait for ATW_PAR_SWR clear 106 * disable interrupts 107 * ack status register 108 * enable interrupts 109 * 110 * rx/tx initialization 111 * 112 * disable rx/tx w/ ATW_NAR_SR, ATW_NAR_ST 113 * allocate and init descriptor rings 114 * write ATW_PAR_DSL (descriptor skip length) 115 * write descriptor base addrs: ATW_TDBD, ATW_TDBP, write ATW_RDB 116 * write ATW_NAR_SQ for one/both transmit descriptor rings 117 * write ATW_NAR_SQ for one/both transmit descriptor rings 118 * enable rx/tx w/ ATW_NAR_SR, ATW_NAR_ST 119 * 120 * rx/tx end 121 * 122 * stop DMA 123 * disable rx/tx w/ ATW_NAR_SR, ATW_NAR_ST 124 * flush tx w/ ATW_NAR_HF 125 * 126 * scan 127 * 128 * initialize rx/tx 129 * 130 * BSS join: (re)association response 131 * 132 * set ATW_FRCTL_AID 133 * 134 * optimizations ??? 135 * 136 */ 137 138 #define ATW_REFSLAVE /* slavishly do what the reference driver does */ 139 140 #define VOODOO_DUR_11_ROUNDING 0x01 /* necessary */ 141 #define VOODOO_DUR_2_4_SPECIALCASE 0x02 /* NOT necessary */ 142 int atw_voodoo = VOODOO_DUR_11_ROUNDING; 143 144 int atw_pseudo_milli = 1; 145 int atw_magic_delay1 = 100 * 1000; 146 int atw_magic_delay2 = 100 * 1000; 147 /* more magic multi-millisecond delays (units: microseconds) */ 148 int atw_nar_delay = 20 * 1000; 149 int atw_magic_delay4 = 10 * 1000; 150 int atw_rf_delay1 = 10 * 1000; 151 int atw_rf_delay2 = 5 * 1000; 152 int atw_plcphd_delay = 2 * 1000; 153 int atw_bbp_io_enable_delay = 20 * 1000; 154 int atw_bbp_io_disable_delay = 2 * 1000; 155 int atw_writewep_delay = 1000; 156 int atw_beacon_len_adjust = 4; 157 int atw_dwelltime = 200; 158 int atw_xindiv2 = 0; 159 160 #ifdef ATW_DEBUG 161 int atw_debug = 0; 162 163 #define ATW_DPRINTF(x) if (atw_debug > 0) printf x 164 #define ATW_DPRINTF2(x) if (atw_debug > 1) printf x 165 #define ATW_DPRINTF3(x) if (atw_debug > 2) printf x 166 #define DPRINTF(sc, x) if ((sc)->sc_ic.ic_if.if_flags & IFF_DEBUG) printf x 167 #define DPRINTF2(sc, x) if ((sc)->sc_ic.ic_if.if_flags & IFF_DEBUG) ATW_DPRINTF2(x) 168 #define DPRINTF3(sc, x) if ((sc)->sc_ic.ic_if.if_flags & IFF_DEBUG) ATW_DPRINTF3(x) 169 170 static void atw_print_regs(struct atw_softc *, const char *); 171 static void atw_dump_pkt(struct ifnet *, struct mbuf *); 172 173 /* Note well: I never got atw_rf3000_read or atw_si4126_read to work. */ 174 # ifdef ATW_BBPDEBUG 175 static int atw_rf3000_read(struct atw_softc *sc, u_int, u_int *); 176 static void atw_rf3000_print(struct atw_softc *); 177 # endif /* ATW_BBPDEBUG */ 178 179 # ifdef ATW_SYNDEBUG 180 static int atw_si4126_read(struct atw_softc *, u_int, u_int *); 181 static void atw_si4126_print(struct atw_softc *); 182 # endif /* ATW_SYNDEBUG */ 183 184 #else 185 #define ATW_DPRINTF(x) 186 #define ATW_DPRINTF2(x) 187 #define ATW_DPRINTF3(x) 188 #define DPRINTF(sc, x) /* nothing */ 189 #define DPRINTF2(sc, x) /* nothing */ 190 #define DPRINTF3(sc, x) /* nothing */ 191 #endif 192 193 /* ifnet methods */ 194 void atw_start(struct ifnet *); 195 void atw_watchdog(struct ifnet *); 196 int atw_ioctl(struct ifnet *, u_long, caddr_t); 197 int atw_init(struct ifnet *); 198 void atw_stop(struct ifnet *, int); 199 200 /* Device attachment */ 201 void atw_attach(struct atw_softc *); 202 int atw_detach(struct atw_softc *); 203 204 /* Rx/Tx process */ 205 void atw_rxdrain(struct atw_softc *); 206 void atw_txdrain(struct atw_softc *); 207 int atw_add_rxbuf(struct atw_softc *, int); 208 void atw_idle(struct atw_softc *, u_int32_t); 209 210 /* Device (de)activation and power state */ 211 int atw_enable(struct atw_softc *); 212 void atw_disable(struct atw_softc *); 213 void atw_power(int, void *); 214 void atw_shutdown(void *); 215 void atw_reset(struct atw_softc *); 216 217 /* Interrupt handlers */ 218 void atw_rxintr(struct atw_softc *); 219 void atw_txintr(struct atw_softc *); 220 void atw_linkintr(struct atw_softc *, u_int32_t); 221 222 /* 802.11 state machine */ 223 static int atw_newstate(struct ieee80211com *, enum ieee80211_state, int); 224 static int atw_tune(struct atw_softc *); 225 static void atw_recv_mgmt(struct ieee80211com *, struct mbuf *, 226 struct ieee80211_node *, int, int, u_int32_t); 227 228 /* Device initialization */ 229 static void atw_wcsr_init(struct atw_softc *); 230 static void atw_cmdr_init(struct atw_softc *); 231 static void atw_tofs2_init(struct atw_softc *); 232 static void atw_txlmt_init(struct atw_softc *); 233 static void atw_test1_init(struct atw_softc *); 234 static void atw_rf_reset(struct atw_softc *); 235 static void atw_cfp_init(struct atw_softc *); 236 static void atw_tofs0_init(struct atw_softc *); 237 static void atw_ifs_init(struct atw_softc *); 238 static void atw_response_times_init(struct atw_softc *); 239 static void atw_bbp_io_init(struct atw_softc *); 240 241 /* RAM/ROM utilities */ 242 static void atw_clear_sram(struct atw_softc *); 243 static void atw_write_sram(struct atw_softc *, u_int, u_int8_t *, u_int); 244 static int atw_read_srom(struct atw_softc *); 245 246 /* BSS setup */ 247 static void atw_tsf(struct atw_softc *); 248 static void atw_start_beacon(struct atw_softc *, int); 249 static void atw_write_bssid(struct atw_softc *); 250 static void atw_write_ssid(struct atw_softc *); 251 static void atw_write_sup_rates(struct atw_softc *); 252 static void atw_write_wep(struct atw_softc *); 253 254 /* Media */ 255 static int atw_media_change(struct ifnet *); 256 static void atw_media_status(struct ifnet *, struct ifmediareq *); 257 258 static void atw_filter_setup(struct atw_softc *); 259 260 /* 802.11 utilities */ 261 static void atw_frame_setdurs(struct atw_softc *, 262 struct atw_frame *, int, int); 263 static struct ieee80211_node *atw_node_alloc(struct ieee80211com *); 264 static void atw_node_free(struct ieee80211com *, 265 struct ieee80211_node *); 266 static void atw_recv_beacon(struct ieee80211com *, struct mbuf *, 267 struct ieee80211_node *, int, int, 268 u_int32_t); 269 static __inline uint32_t atw_last_even_tsft(uint32_t, uint32_t, 270 uint32_t); 271 static __inline void atw_tsft(struct atw_softc *, uint32_t *, 272 uint32_t *); 273 274 /* 275 * Tuner/transceiver/modem 276 */ 277 static void atw_bbp_io_enable(struct atw_softc *, int); 278 279 /* RFMD RF3000 Baseband Processor */ 280 static int atw_rf3000_init(struct atw_softc *); 281 static int atw_rf3000_tune(struct atw_softc *, u_int); 282 static int atw_rf3000_write(struct atw_softc *, u_int, u_int); 283 284 /* Silicon Laboratories Si4126 RF/IF Synthesizer */ 285 static void atw_si4126_tune(struct atw_softc *, u_int); 286 static void atw_si4126_write(struct atw_softc *, u_int, u_int); 287 288 const struct atw_txthresh_tab atw_txthresh_tab_lo[] = ATW_TXTHRESH_TAB_LO_RATE; 289 const struct atw_txthresh_tab atw_txthresh_tab_hi[] = ATW_TXTHRESH_TAB_HI_RATE; 290 291 const char *atw_tx_state[] = { 292 "STOPPED", 293 "RUNNING - read descriptor", 294 "RUNNING - transmitting", 295 "RUNNING - filling fifo", /* XXX */ 296 "SUSPENDED", 297 "RUNNING -- write descriptor", 298 "RUNNING -- write last descriptor", 299 "RUNNING - fifo full" 300 }; 301 302 const char *atw_rx_state[] = { 303 "STOPPED", 304 "RUNNING - read descriptor", 305 "RUNNING - check this packet, pre-fetch next", 306 "RUNNING - wait for reception", 307 "SUSPENDED", 308 "RUNNING - write descriptor", 309 "RUNNING - flush fifo", 310 "RUNNING - fifo drain" 311 }; 312 313 int 314 atw_activate(struct device *self, enum devact act) 315 { 316 struct atw_softc *sc = (struct atw_softc *)self; 317 int rv = 0, s; 318 319 s = splnet(); 320 switch (act) { 321 case DVACT_ACTIVATE: 322 rv = EOPNOTSUPP; 323 break; 324 325 case DVACT_DEACTIVATE: 326 if_deactivate(&sc->sc_ic.ic_if); 327 break; 328 } 329 splx(s); 330 return rv; 331 } 332 333 /* 334 * atw_enable: 335 * 336 * Enable the ADM8211 chip. 337 */ 338 int 339 atw_enable(struct atw_softc *sc) 340 { 341 342 if (ATW_IS_ENABLED(sc) == 0) { 343 if (sc->sc_enable != NULL && (*sc->sc_enable)(sc) != 0) { 344 printf("%s: device enable failed\n", 345 sc->sc_dev.dv_xname); 346 return (EIO); 347 } 348 sc->sc_flags |= ATWF_ENABLED; 349 } 350 return (0); 351 } 352 353 /* 354 * atw_disable: 355 * 356 * Disable the ADM8211 chip. 357 */ 358 void 359 atw_disable(struct atw_softc *sc) 360 { 361 if (!ATW_IS_ENABLED(sc)) 362 return; 363 if (sc->sc_disable != NULL) 364 (*sc->sc_disable)(sc); 365 sc->sc_flags &= ~ATWF_ENABLED; 366 } 367 368 /* Returns -1 on failure. */ 369 static int 370 atw_read_srom(struct atw_softc *sc) 371 { 372 struct seeprom_descriptor sd; 373 uint32_t test0, fail_bits; 374 375 (void)memset(&sd, 0, sizeof(sd)); 376 377 test0 = ATW_READ(sc, ATW_TEST0); 378 379 switch (sc->sc_rev) { 380 case ATW_REVISION_BA: 381 case ATW_REVISION_CA: 382 fail_bits = ATW_TEST0_EPNE; 383 break; 384 default: 385 fail_bits = ATW_TEST0_EPNE|ATW_TEST0_EPSNM; 386 break; 387 } 388 if ((test0 & fail_bits) != 0) { 389 printf("%s: bad or missing/bad SROM\n", sc->sc_dev.dv_xname); 390 return -1; 391 } 392 393 switch (test0 & ATW_TEST0_EPTYP_MASK) { 394 case ATW_TEST0_EPTYP_93c66: 395 ATW_DPRINTF(("%s: 93c66 SROM\n", sc->sc_dev.dv_xname)); 396 sc->sc_sromsz = 512; 397 sd.sd_chip = C56_66; 398 break; 399 case ATW_TEST0_EPTYP_93c46: 400 ATW_DPRINTF(("%s: 93c46 SROM\n", sc->sc_dev.dv_xname)); 401 sc->sc_sromsz = 128; 402 sd.sd_chip = C46; 403 break; 404 default: 405 printf("%s: unknown SROM type %d\n", sc->sc_dev.dv_xname, 406 MASK_AND_RSHIFT(test0, ATW_TEST0_EPTYP_MASK)); 407 return -1; 408 } 409 410 sc->sc_srom = malloc(sc->sc_sromsz, M_DEVBUF, M_NOWAIT); 411 412 if (sc->sc_srom == NULL) { 413 printf("%s: unable to allocate SROM buffer\n", 414 sc->sc_dev.dv_xname); 415 return -1; 416 } 417 418 (void)memset(sc->sc_srom, 0, sc->sc_sromsz); 419 420 /* ADM8211 has a single 32-bit register for controlling the 421 * 93cx6 SROM. Bit SRS enables the serial port. There is no 422 * "ready" bit. The ADM8211 input/output sense is the reverse 423 * of read_seeprom's. 424 */ 425 sd.sd_tag = sc->sc_st; 426 sd.sd_bsh = sc->sc_sh; 427 sd.sd_regsize = 4; 428 sd.sd_control_offset = ATW_SPR; 429 sd.sd_status_offset = ATW_SPR; 430 sd.sd_dataout_offset = ATW_SPR; 431 sd.sd_CK = ATW_SPR_SCLK; 432 sd.sd_CS = ATW_SPR_SCS; 433 sd.sd_DI = ATW_SPR_SDO; 434 sd.sd_DO = ATW_SPR_SDI; 435 sd.sd_MS = ATW_SPR_SRS; 436 sd.sd_RDY = 0; 437 438 if (!read_seeprom(&sd, sc->sc_srom, 0, sc->sc_sromsz/2)) { 439 printf("%s: could not read SROM\n", sc->sc_dev.dv_xname); 440 free(sc->sc_srom, M_DEVBUF); 441 return -1; 442 } 443 #ifdef ATW_DEBUG 444 { 445 int i; 446 ATW_DPRINTF(("\nSerial EEPROM:\n\t")); 447 for (i = 0; i < sc->sc_sromsz/2; i = i + 1) { 448 if (((i % 8) == 0) && (i != 0)) { 449 ATW_DPRINTF(("\n\t")); 450 } 451 ATW_DPRINTF((" 0x%x", sc->sc_srom[i])); 452 } 453 ATW_DPRINTF(("\n")); 454 } 455 #endif /* ATW_DEBUG */ 456 return 0; 457 } 458 459 #ifdef ATW_DEBUG 460 static void 461 atw_print_regs(struct atw_softc *sc, const char *where) 462 { 463 #define PRINTREG(sc, reg) \ 464 ATW_DPRINTF2(("%s: reg[ " #reg " / %03x ] = %08x\n", \ 465 sc->sc_dev.dv_xname, reg, ATW_READ(sc, reg))) 466 467 ATW_DPRINTF2(("%s: %s\n", sc->sc_dev.dv_xname, where)); 468 469 PRINTREG(sc, ATW_PAR); 470 PRINTREG(sc, ATW_FRCTL); 471 PRINTREG(sc, ATW_TDR); 472 PRINTREG(sc, ATW_WTDP); 473 PRINTREG(sc, ATW_RDR); 474 PRINTREG(sc, ATW_WRDP); 475 PRINTREG(sc, ATW_RDB); 476 PRINTREG(sc, ATW_CSR3A); 477 PRINTREG(sc, ATW_TDBD); 478 PRINTREG(sc, ATW_TDBP); 479 PRINTREG(sc, ATW_STSR); 480 PRINTREG(sc, ATW_CSR5A); 481 PRINTREG(sc, ATW_NAR); 482 PRINTREG(sc, ATW_CSR6A); 483 PRINTREG(sc, ATW_IER); 484 PRINTREG(sc, ATW_CSR7A); 485 PRINTREG(sc, ATW_LPC); 486 PRINTREG(sc, ATW_TEST1); 487 PRINTREG(sc, ATW_SPR); 488 PRINTREG(sc, ATW_TEST0); 489 PRINTREG(sc, ATW_WCSR); 490 PRINTREG(sc, ATW_WPDR); 491 PRINTREG(sc, ATW_GPTMR); 492 PRINTREG(sc, ATW_GPIO); 493 PRINTREG(sc, ATW_BBPCTL); 494 PRINTREG(sc, ATW_SYNCTL); 495 PRINTREG(sc, ATW_PLCPHD); 496 PRINTREG(sc, ATW_MMIWADDR); 497 PRINTREG(sc, ATW_MMIRADDR1); 498 PRINTREG(sc, ATW_MMIRADDR2); 499 PRINTREG(sc, ATW_TXBR); 500 PRINTREG(sc, ATW_CSR15A); 501 PRINTREG(sc, ATW_ALCSTAT); 502 PRINTREG(sc, ATW_TOFS2); 503 PRINTREG(sc, ATW_CMDR); 504 PRINTREG(sc, ATW_PCIC); 505 PRINTREG(sc, ATW_PMCSR); 506 PRINTREG(sc, ATW_PAR0); 507 PRINTREG(sc, ATW_PAR1); 508 PRINTREG(sc, ATW_MAR0); 509 PRINTREG(sc, ATW_MAR1); 510 PRINTREG(sc, ATW_ATIMDA0); 511 PRINTREG(sc, ATW_ABDA1); 512 PRINTREG(sc, ATW_BSSID0); 513 PRINTREG(sc, ATW_TXLMT); 514 PRINTREG(sc, ATW_MIBCNT); 515 PRINTREG(sc, ATW_BCNT); 516 PRINTREG(sc, ATW_TSFTH); 517 PRINTREG(sc, ATW_TSC); 518 PRINTREG(sc, ATW_SYNRF); 519 PRINTREG(sc, ATW_BPLI); 520 PRINTREG(sc, ATW_CAP0); 521 PRINTREG(sc, ATW_CAP1); 522 PRINTREG(sc, ATW_RMD); 523 PRINTREG(sc, ATW_CFPP); 524 PRINTREG(sc, ATW_TOFS0); 525 PRINTREG(sc, ATW_TOFS1); 526 PRINTREG(sc, ATW_IFST); 527 PRINTREG(sc, ATW_RSPT); 528 PRINTREG(sc, ATW_TSFTL); 529 PRINTREG(sc, ATW_WEPCTL); 530 PRINTREG(sc, ATW_WESK); 531 PRINTREG(sc, ATW_WEPCNT); 532 PRINTREG(sc, ATW_MACTEST); 533 PRINTREG(sc, ATW_FER); 534 PRINTREG(sc, ATW_FEMR); 535 PRINTREG(sc, ATW_FPSR); 536 PRINTREG(sc, ATW_FFER); 537 #undef PRINTREG 538 } 539 #endif /* ATW_DEBUG */ 540 541 /* 542 * Finish attaching an ADMtek ADM8211 MAC. Called by bus-specific front-end. 543 */ 544 void 545 atw_attach(struct atw_softc *sc) 546 { 547 static const u_int8_t empty_macaddr[IEEE80211_ADDR_LEN] = { 548 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 549 }; 550 struct ieee80211com *ic = &sc->sc_ic; 551 struct ifnet *ifp = &ic->ic_if; 552 int country_code, error, i, nrate, srom_major; 553 u_int32_t reg; 554 static const char *type_strings[] = {"Intersil (not supported)", 555 "RFMD", "Marvel (not supported)"}; 556 557 sc->sc_txth = atw_txthresh_tab_lo; 558 559 SIMPLEQ_INIT(&sc->sc_txfreeq); 560 SIMPLEQ_INIT(&sc->sc_txdirtyq); 561 562 #ifdef ATW_DEBUG 563 atw_print_regs(sc, "atw_attach"); 564 #endif /* ATW_DEBUG */ 565 566 /* 567 * Allocate the control data structures, and create and load the 568 * DMA map for it. 569 */ 570 if ((error = bus_dmamem_alloc(sc->sc_dmat, 571 sizeof(struct atw_control_data), PAGE_SIZE, 0, &sc->sc_cdseg, 572 1, &sc->sc_cdnseg, 0)) != 0) { 573 printf("%s: unable to allocate control data, error = %d\n", 574 sc->sc_dev.dv_xname, error); 575 goto fail_0; 576 } 577 578 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_cdseg, sc->sc_cdnseg, 579 sizeof(struct atw_control_data), (caddr_t *)&sc->sc_control_data, 580 BUS_DMA_COHERENT)) != 0) { 581 printf("%s: unable to map control data, error = %d\n", 582 sc->sc_dev.dv_xname, error); 583 goto fail_1; 584 } 585 586 if ((error = bus_dmamap_create(sc->sc_dmat, 587 sizeof(struct atw_control_data), 1, 588 sizeof(struct atw_control_data), 0, 0, &sc->sc_cddmamap)) != 0) { 589 printf("%s: unable to create control data DMA map, " 590 "error = %d\n", sc->sc_dev.dv_xname, error); 591 goto fail_2; 592 } 593 594 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_cddmamap, 595 sc->sc_control_data, sizeof(struct atw_control_data), NULL, 596 0)) != 0) { 597 printf("%s: unable to load control data DMA map, error = %d\n", 598 sc->sc_dev.dv_xname, error); 599 goto fail_3; 600 } 601 602 /* 603 * Create the transmit buffer DMA maps. 604 */ 605 sc->sc_ntxsegs = ATW_NTXSEGS; 606 for (i = 0; i < ATW_TXQUEUELEN; i++) { 607 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 608 sc->sc_ntxsegs, MCLBYTES, 0, 0, 609 &sc->sc_txsoft[i].txs_dmamap)) != 0) { 610 printf("%s: unable to create tx DMA map %d, " 611 "error = %d\n", sc->sc_dev.dv_xname, i, error); 612 goto fail_4; 613 } 614 } 615 616 /* 617 * Create the receive buffer DMA maps. 618 */ 619 for (i = 0; i < ATW_NRXDESC; i++) { 620 if ((error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, 621 MCLBYTES, 0, 0, &sc->sc_rxsoft[i].rxs_dmamap)) != 0) { 622 printf("%s: unable to create rx DMA map %d, " 623 "error = %d\n", sc->sc_dev.dv_xname, i, error); 624 goto fail_5; 625 } 626 } 627 for (i = 0; i < ATW_NRXDESC; i++) { 628 sc->sc_rxsoft[i].rxs_mbuf = NULL; 629 } 630 631 switch (sc->sc_rev) { 632 case ATW_REVISION_AB: 633 case ATW_REVISION_AF: 634 sc->sc_sramlen = ATW_SRAM_A_SIZE; 635 break; 636 case ATW_REVISION_BA: 637 case ATW_REVISION_CA: 638 sc->sc_sramlen = ATW_SRAM_B_SIZE; 639 break; 640 } 641 642 /* Reset the chip to a known state. */ 643 atw_reset(sc); 644 645 if (atw_read_srom(sc) == -1) 646 return; 647 648 sc->sc_rftype = MASK_AND_RSHIFT(sc->sc_srom[ATW_SR_CSR20], 649 ATW_SR_RFTYPE_MASK); 650 651 sc->sc_bbptype = MASK_AND_RSHIFT(sc->sc_srom[ATW_SR_CSR20], 652 ATW_SR_BBPTYPE_MASK); 653 654 if (sc->sc_rftype > sizeof(type_strings)/sizeof(type_strings[0])) { 655 printf("%s: unknown RF\n", sc->sc_dev.dv_xname); 656 return; 657 } 658 if (sc->sc_bbptype > sizeof(type_strings)/sizeof(type_strings[0])) { 659 printf("%s: unknown BBP\n", sc->sc_dev.dv_xname); 660 return; 661 } 662 663 printf("%s: %s RF, %s BBP", sc->sc_dev.dv_xname, 664 type_strings[sc->sc_rftype], type_strings[sc->sc_bbptype]); 665 666 /* XXX There exists a Linux driver which seems to use RFType = 0 for 667 * MARVEL. My bug, or theirs? 668 */ 669 670 reg = LSHIFT(sc->sc_rftype, ATW_SYNCTL_RFTYPE_MASK); 671 672 switch (sc->sc_rftype) { 673 case ATW_RFTYPE_INTERSIL: 674 reg |= ATW_SYNCTL_CS1; 675 break; 676 case ATW_RFTYPE_RFMD: 677 reg |= ATW_SYNCTL_CS0; 678 break; 679 case ATW_RFTYPE_MARVEL: 680 break; 681 } 682 683 sc->sc_synctl_rd = reg | ATW_SYNCTL_RD; 684 sc->sc_synctl_wr = reg | ATW_SYNCTL_WR; 685 686 reg = LSHIFT(sc->sc_bbptype, ATW_BBPCTL_TYPE_MASK); 687 688 switch (sc->sc_bbptype) { 689 case ATW_BBPTYPE_INTERSIL: 690 reg |= ATW_BBPCTL_TWI; 691 break; 692 case ATW_BBPTYPE_RFMD: 693 reg |= ATW_BBPCTL_RF3KADDR_ADDR | ATW_BBPCTL_NEGEDGE_DO | 694 ATW_BBPCTL_CCA_ACTLO; 695 break; 696 case ATW_BBPTYPE_MARVEL: 697 break; 698 case ATW_C_BBPTYPE_RFMD: 699 printf("%s: ADM8211C MAC/RFMD BBP not supported yet.\n", 700 sc->sc_dev.dv_xname); 701 break; 702 } 703 704 sc->sc_bbpctl_wr = reg | ATW_BBPCTL_WR; 705 sc->sc_bbpctl_rd = reg | ATW_BBPCTL_RD; 706 707 /* 708 * From this point forward, the attachment cannot fail. A failure 709 * before this point releases all resources that may have been 710 * allocated. 711 */ 712 sc->sc_flags |= ATWF_ATTACHED /* | ATWF_RTSCTS */; 713 714 ATW_DPRINTF((" SROM MAC %04x%04x%04x", 715 htole16(sc->sc_srom[ATW_SR_MAC00]), 716 htole16(sc->sc_srom[ATW_SR_MAC01]), 717 htole16(sc->sc_srom[ATW_SR_MAC10]))); 718 719 srom_major = MASK_AND_RSHIFT(sc->sc_srom[ATW_SR_FORMAT_VERSION], 720 ATW_SR_MAJOR_MASK); 721 722 if (srom_major < 2) 723 sc->sc_rf3000_options1 = 0; 724 else if (sc->sc_rev == ATW_REVISION_BA) { 725 sc->sc_rf3000_options1 = 726 MASK_AND_RSHIFT(sc->sc_srom[ATW_SR_CR28_CR03], 727 ATW_SR_CR28_MASK); 728 } else 729 sc->sc_rf3000_options1 = 0; 730 731 sc->sc_rf3000_options2 = MASK_AND_RSHIFT(sc->sc_srom[ATW_SR_CTRY_CR29], 732 ATW_SR_CR29_MASK); 733 734 country_code = MASK_AND_RSHIFT(sc->sc_srom[ATW_SR_CTRY_CR29], 735 ATW_SR_CTRY_MASK); 736 737 #define ADD_CHANNEL(_ic, _chan) do { \ 738 _ic->ic_channels[_chan].ic_flags = IEEE80211_CHAN_B; \ 739 _ic->ic_channels[_chan].ic_freq = \ 740 ieee80211_ieee2mhz(_chan, _ic->ic_channels[_chan].ic_flags);\ 741 } while (0) 742 743 /* Find available channels */ 744 switch (country_code) { 745 case COUNTRY_MMK2: /* 1-14 */ 746 ADD_CHANNEL(ic, 14); 747 /*FALLTHROUGH*/ 748 case COUNTRY_ETSI: /* 1-13 */ 749 for (i = 1; i <= 13; i++) 750 ADD_CHANNEL(ic, i); 751 break; 752 case COUNTRY_FCC: /* 1-11 */ 753 case COUNTRY_IC: /* 1-11 */ 754 for (i = 1; i <= 11; i++) 755 ADD_CHANNEL(ic, i); 756 break; 757 case COUNTRY_MMK: /* 14 */ 758 ADD_CHANNEL(ic, 14); 759 break; 760 case COUNTRY_FRANCE: /* 10-13 */ 761 for (i = 10; i <= 13; i++) 762 ADD_CHANNEL(ic, i); 763 break; 764 default: /* assume channels 10-11 */ 765 case COUNTRY_SPAIN: /* 10-11 */ 766 for (i = 10; i <= 11; i++) 767 ADD_CHANNEL(ic, i); 768 break; 769 } 770 771 /* Read the MAC address. */ 772 reg = ATW_READ(sc, ATW_PAR0); 773 ic->ic_myaddr[0] = MASK_AND_RSHIFT(reg, ATW_PAR0_PAB0_MASK); 774 ic->ic_myaddr[1] = MASK_AND_RSHIFT(reg, ATW_PAR0_PAB1_MASK); 775 ic->ic_myaddr[2] = MASK_AND_RSHIFT(reg, ATW_PAR0_PAB2_MASK); 776 ic->ic_myaddr[3] = MASK_AND_RSHIFT(reg, ATW_PAR0_PAB3_MASK); 777 reg = ATW_READ(sc, ATW_PAR1); 778 ic->ic_myaddr[4] = MASK_AND_RSHIFT(reg, ATW_PAR1_PAB4_MASK); 779 ic->ic_myaddr[5] = MASK_AND_RSHIFT(reg, ATW_PAR1_PAB5_MASK); 780 781 if (IEEE80211_ADDR_EQ(ic->ic_myaddr, empty_macaddr)) { 782 printf(" could not get mac address, attach failed\n"); 783 return; 784 } 785 786 printf(" 802.11 address %s\n", ether_sprintf(ic->ic_myaddr)); 787 788 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 789 ifp->if_softc = sc; 790 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST | 791 IFF_NOTRAILERS; 792 ifp->if_ioctl = atw_ioctl; 793 ifp->if_start = atw_start; 794 ifp->if_watchdog = atw_watchdog; 795 ifp->if_init = atw_init; 796 ifp->if_stop = atw_stop; 797 IFQ_SET_READY(&ifp->if_snd); 798 799 ic->ic_phytype = IEEE80211_T_DS; 800 ic->ic_opmode = IEEE80211_M_STA; 801 ic->ic_caps = IEEE80211_C_PMGT | IEEE80211_C_IBSS | 802 IEEE80211_C_HOSTAP | IEEE80211_C_MONITOR | IEEE80211_C_WEP; 803 804 nrate = 0; 805 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 2; 806 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 4; 807 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 11; 808 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 22; 809 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_nrates = nrate; 810 811 /* 812 * Call MI attach routines. 813 */ 814 815 if_attach(ifp); 816 ieee80211_ifattach(ifp); 817 818 sc->sc_newstate = ic->ic_newstate; 819 ic->ic_newstate = atw_newstate; 820 821 sc->sc_recv_mgmt = ic->ic_recv_mgmt; 822 ic->ic_recv_mgmt = atw_recv_mgmt; 823 824 sc->sc_node_free = ic->ic_node_free; 825 ic->ic_node_free = atw_node_free; 826 827 sc->sc_node_alloc = ic->ic_node_alloc; 828 ic->ic_node_alloc = atw_node_alloc; 829 830 /* possibly we should fill in our own sc_send_prresp, since 831 * the ADM8211 is probably sending probe responses in ad hoc 832 * mode. 833 */ 834 835 /* complete initialization */ 836 ieee80211_media_init(ifp, atw_media_change, atw_media_status); 837 callout_init(&sc->sc_scan_ch); 838 839 #if NBPFILTER > 0 840 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 841 sizeof(struct ieee80211_frame) + 64, &sc->sc_radiobpf); 842 #endif 843 844 /* 845 * Make sure the interface is shutdown during reboot. 846 */ 847 sc->sc_sdhook = shutdownhook_establish(atw_shutdown, sc); 848 if (sc->sc_sdhook == NULL) 849 printf("%s: WARNING: unable to establish shutdown hook\n", 850 sc->sc_dev.dv_xname); 851 852 /* 853 * Add a suspend hook to make sure we come back up after a 854 * resume. 855 */ 856 sc->sc_powerhook = powerhook_establish(atw_power, sc); 857 if (sc->sc_powerhook == NULL) 858 printf("%s: WARNING: unable to establish power hook\n", 859 sc->sc_dev.dv_xname); 860 861 memset(&sc->sc_rxtapu, 0, sizeof(sc->sc_rxtapu)); 862 sc->sc_rxtap.ar_ihdr.it_len = sizeof(sc->sc_rxtapu); 863 sc->sc_rxtap.ar_ihdr.it_present = ATW_RX_RADIOTAP_PRESENT; 864 865 memset(&sc->sc_txtapu, 0, sizeof(sc->sc_txtapu)); 866 sc->sc_txtap.at_ihdr.it_len = sizeof(sc->sc_txtapu); 867 sc->sc_txtap.at_ihdr.it_present = ATW_TX_RADIOTAP_PRESENT; 868 869 return; 870 871 /* 872 * Free any resources we've allocated during the failed attach 873 * attempt. Do this in reverse order and fall through. 874 */ 875 fail_5: 876 for (i = 0; i < ATW_NRXDESC; i++) { 877 if (sc->sc_rxsoft[i].rxs_dmamap == NULL) 878 continue; 879 bus_dmamap_destroy(sc->sc_dmat, sc->sc_rxsoft[i].rxs_dmamap); 880 } 881 fail_4: 882 for (i = 0; i < ATW_TXQUEUELEN; i++) { 883 if (sc->sc_txsoft[i].txs_dmamap == NULL) 884 continue; 885 bus_dmamap_destroy(sc->sc_dmat, sc->sc_txsoft[i].txs_dmamap); 886 } 887 bus_dmamap_unload(sc->sc_dmat, sc->sc_cddmamap); 888 fail_3: 889 bus_dmamap_destroy(sc->sc_dmat, sc->sc_cddmamap); 890 fail_2: 891 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_control_data, 892 sizeof(struct atw_control_data)); 893 fail_1: 894 bus_dmamem_free(sc->sc_dmat, &sc->sc_cdseg, sc->sc_cdnseg); 895 fail_0: 896 return; 897 } 898 899 static struct ieee80211_node * 900 atw_node_alloc(struct ieee80211com *ic) 901 { 902 struct atw_softc *sc = (struct atw_softc *)ic->ic_if.if_softc; 903 struct ieee80211_node *ni = (*sc->sc_node_alloc)(ic); 904 905 DPRINTF(sc, ("%s: alloc node %p\n", sc->sc_dev.dv_xname, ni)); 906 return ni; 907 } 908 909 static void 910 atw_node_free(struct ieee80211com *ic, struct ieee80211_node *ni) 911 { 912 struct atw_softc *sc = (struct atw_softc *)ic->ic_if.if_softc; 913 914 DPRINTF(sc, ("%s: freeing node %p %s\n", sc->sc_dev.dv_xname, ni, 915 ether_sprintf(ni->ni_bssid))); 916 (*sc->sc_node_free)(ic, ni); 917 } 918 919 920 static void 921 atw_test1_reset(struct atw_softc *sc) 922 { 923 switch (sc->sc_rev) { 924 case ATW_REVISION_BA: 925 if (1 /* XXX condition on transceiver type */) { 926 ATW_SET(sc, ATW_TEST1, ATW_TEST1_TESTMODE_MONITOR); 927 } 928 break; 929 case ATW_REVISION_CA: 930 ATW_CLR(sc, ATW_TEST1, ATW_TEST1_TESTMODE_MASK); 931 break; 932 default: 933 break; 934 } 935 } 936 937 /* 938 * atw_reset: 939 * 940 * Perform a soft reset on the ADM8211. 941 */ 942 void 943 atw_reset(struct atw_softc *sc) 944 { 945 int i; 946 uint32_t lpc; 947 948 ATW_WRITE(sc, ATW_NAR, 0x0); 949 DELAY(atw_nar_delay); 950 951 /* Reference driver has a cryptic remark indicating that this might 952 * power-on the chip. I know that it turns off power-saving.... 953 */ 954 ATW_WRITE(sc, ATW_FRCTL, 0x0); 955 956 ATW_WRITE(sc, ATW_PAR, ATW_PAR_SWR); 957 958 for (i = 0; i < 50000 / atw_pseudo_milli; i++) { 959 if (ATW_READ(sc, ATW_PAR) == 0) 960 break; 961 DELAY(atw_pseudo_milli); 962 } 963 964 /* ... and then pause 100ms longer for good measure. */ 965 DELAY(atw_magic_delay1); 966 967 DPRINTF2(sc, ("%s: atw_reset %d iterations\n", sc->sc_dev.dv_xname, i)); 968 969 if (ATW_ISSET(sc, ATW_PAR, ATW_PAR_SWR)) 970 printf("%s: reset failed to complete\n", sc->sc_dev.dv_xname); 971 972 atw_test1_reset(sc); 973 /* 974 * Initialize the PCI Access Register. 975 */ 976 sc->sc_busmode = ATW_PAR_PBL_8DW; 977 978 ATW_WRITE(sc, ATW_PAR, sc->sc_busmode); 979 DPRINTF(sc, ("%s: ATW_PAR %08x busmode %08x\n", sc->sc_dev.dv_xname, 980 ATW_READ(sc, ATW_PAR), sc->sc_busmode)); 981 982 /* Turn off maximum power saving, etc. 983 * 984 * XXX Following example of reference driver, should I set 985 * an AID of 1? It didn't seem to help.... 986 */ 987 ATW_WRITE(sc, ATW_FRCTL, 0x0); 988 989 DELAY(atw_magic_delay2); 990 991 /* Recall EEPROM. */ 992 ATW_SET(sc, ATW_TEST0, ATW_TEST0_EPRLD); 993 994 DELAY(atw_magic_delay4); 995 996 lpc = ATW_READ(sc, ATW_LPC); 997 998 DPRINTF(sc, ("%s: ATW_LPC %#08x\n", __func__, lpc)); 999 1000 /* A reset seems to affect the SRAM contents, so put them into 1001 * a known state. 1002 */ 1003 atw_clear_sram(sc); 1004 1005 memset(sc->sc_bssid, 0xff, sizeof(sc->sc_bssid)); 1006 } 1007 1008 static void 1009 atw_clear_sram(struct atw_softc *sc) 1010 { 1011 memset(sc->sc_sram, 0, sizeof(sc->sc_sram)); 1012 /* XXX not for revision 0x20. */ 1013 atw_write_sram(sc, 0, sc->sc_sram, sc->sc_sramlen); 1014 } 1015 1016 /* TBD atw_init 1017 * 1018 * set MAC based on ic->ic_bss->myaddr 1019 * write WEP keys 1020 * set TX rate 1021 */ 1022 1023 /* Tell the ADM8211 to raise ATW_INTR_LINKOFF if 7 beacon intervals pass 1024 * without receiving a beacon with the preferred BSSID & SSID. 1025 * atw_write_bssid & atw_write_ssid set the BSSID & SSID. 1026 */ 1027 static void 1028 atw_wcsr_init(struct atw_softc *sc) 1029 { 1030 uint32_t wcsr; 1031 1032 wcsr = ATW_READ(sc, ATW_WCSR); 1033 wcsr &= ~(ATW_WCSR_BLN_MASK|ATW_WCSR_LSOE|ATW_WCSR_MPRE|ATW_WCSR_LSOE); 1034 wcsr |= LSHIFT(7, ATW_WCSR_BLN_MASK); 1035 ATW_WRITE(sc, ATW_WCSR, wcsr); /* XXX resets wake-up status bits */ 1036 1037 DPRINTF(sc, ("%s: %s reg[WCSR] = %08x\n", 1038 sc->sc_dev.dv_xname, __func__, ATW_READ(sc, ATW_WCSR))); 1039 } 1040 1041 /* Turn off power management. Set Rx store-and-forward mode. */ 1042 static void 1043 atw_cmdr_init(struct atw_softc *sc) 1044 { 1045 uint32_t cmdr; 1046 cmdr = ATW_READ(sc, ATW_CMDR); 1047 cmdr &= ~ATW_CMDR_APM; 1048 cmdr |= ATW_CMDR_RTE; 1049 cmdr &= ~ATW_CMDR_DRT_MASK; 1050 cmdr |= ATW_CMDR_DRT_SF; 1051 1052 ATW_WRITE(sc, ATW_CMDR, cmdr); 1053 } 1054 1055 static void 1056 atw_tofs2_init(struct atw_softc *sc) 1057 { 1058 uint32_t tofs2; 1059 /* XXX this magic can probably be figured out from the RFMD docs */ 1060 #ifndef ATW_REFSLAVE 1061 tofs2 = LSHIFT(4, ATW_TOFS2_PWR1UP_MASK) | /* 8 ms = 4 * 2 ms */ 1062 LSHIFT(13, ATW_TOFS2_PWR0PAPE_MASK) | /* 13 us */ 1063 LSHIFT(8, ATW_TOFS2_PWR1PAPE_MASK) | /* 8 us */ 1064 LSHIFT(5, ATW_TOFS2_PWR0TRSW_MASK) | /* 5 us */ 1065 LSHIFT(12, ATW_TOFS2_PWR1TRSW_MASK) | /* 12 us */ 1066 LSHIFT(13, ATW_TOFS2_PWR0PE2_MASK) | /* 13 us */ 1067 LSHIFT(4, ATW_TOFS2_PWR1PE2_MASK) | /* 4 us */ 1068 LSHIFT(5, ATW_TOFS2_PWR0TXPE_MASK); /* 5 us */ 1069 #else 1070 /* XXX new magic from reference driver source */ 1071 tofs2 = LSHIFT(8, ATW_TOFS2_PWR1UP_MASK) | /* 8 ms = 4 * 2 ms */ 1072 LSHIFT(8, ATW_TOFS2_PWR0PAPE_MASK) | /* 13 us */ 1073 LSHIFT(1, ATW_TOFS2_PWR1PAPE_MASK) | /* 8 us */ 1074 LSHIFT(5, ATW_TOFS2_PWR0TRSW_MASK) | /* 5 us */ 1075 LSHIFT(12, ATW_TOFS2_PWR1TRSW_MASK) | /* 12 us */ 1076 LSHIFT(13, ATW_TOFS2_PWR0PE2_MASK) | /* 13 us */ 1077 LSHIFT(1, ATW_TOFS2_PWR1PE2_MASK) | /* 4 us */ 1078 LSHIFT(8, ATW_TOFS2_PWR0TXPE_MASK); /* 5 us */ 1079 #endif 1080 ATW_WRITE(sc, ATW_TOFS2, tofs2); 1081 } 1082 1083 static void 1084 atw_nar_init(struct atw_softc *sc) 1085 { 1086 ATW_WRITE(sc, ATW_NAR, ATW_NAR_SF|ATW_NAR_PB); 1087 } 1088 1089 static void 1090 atw_txlmt_init(struct atw_softc *sc) 1091 { 1092 ATW_WRITE(sc, ATW_TXLMT, LSHIFT(512, ATW_TXLMT_MTMLT_MASK) | 1093 LSHIFT(1, ATW_TXLMT_SRTYLIM_MASK)); 1094 } 1095 1096 static void 1097 atw_test1_init(struct atw_softc *sc) 1098 { 1099 uint32_t test1; 1100 1101 test1 = ATW_READ(sc, ATW_TEST1); 1102 test1 &= ~(ATW_TEST1_DBGREAD_MASK|ATW_TEST1_CONTROL); 1103 /* XXX magic 0x1 */ 1104 test1 |= LSHIFT(0x1, ATW_TEST1_DBGREAD_MASK) | ATW_TEST1_CONTROL; 1105 ATW_WRITE(sc, ATW_TEST1, test1); 1106 } 1107 1108 static void 1109 atw_rf_reset(struct atw_softc *sc) 1110 { 1111 /* XXX this resets an Intersil RF front-end? */ 1112 /* TBD condition on Intersil RFType? */ 1113 ATW_WRITE(sc, ATW_SYNRF, ATW_SYNRF_INTERSIL_EN); 1114 DELAY(atw_rf_delay1); 1115 ATW_WRITE(sc, ATW_SYNRF, 0); 1116 DELAY(atw_rf_delay2); 1117 } 1118 1119 /* Set 16 TU max duration for the contention-free period (CFP). */ 1120 static void 1121 atw_cfp_init(struct atw_softc *sc) 1122 { 1123 uint32_t cfpp; 1124 1125 cfpp = ATW_READ(sc, ATW_CFPP); 1126 cfpp &= ~ATW_CFPP_CFPMD; 1127 cfpp |= LSHIFT(16, ATW_CFPP_CFPMD); 1128 ATW_WRITE(sc, ATW_CFPP, cfpp); 1129 } 1130 1131 static void 1132 atw_tofs0_init(struct atw_softc *sc) 1133 { 1134 /* XXX I guess that the Cardbus clock is 22MHz? 1135 * I am assuming that the role of ATW_TOFS0_USCNT is 1136 * to divide the bus clock to get a 1MHz clock---the datasheet is not 1137 * very clear on this point. It says in the datasheet that it is 1138 * possible for the ADM8211 to accomodate bus speeds between 22MHz 1139 * and 33MHz; maybe this is the way? I see a binary-only driver write 1140 * these values. These values are also the power-on default. 1141 */ 1142 ATW_WRITE(sc, ATW_TOFS0, 1143 LSHIFT(22, ATW_TOFS0_USCNT_MASK) | 1144 ATW_TOFS0_TUCNT_MASK /* set all bits in TUCNT */); 1145 } 1146 1147 /* Initialize interframe spacing: 802.11b slot time, SIFS, DIFS, EIFS. */ 1148 static void 1149 atw_ifs_init(struct atw_softc *sc) 1150 { 1151 uint32_t ifst; 1152 /* XXX EIFS=0x64, SIFS=110 are used by the reference driver. 1153 * Go figure. 1154 */ 1155 ifst = LSHIFT(IEEE80211_DUR_DS_SLOT, ATW_IFST_SLOT_MASK) | 1156 LSHIFT(22 * 5 /* IEEE80211_DUR_DS_SIFS */ /* # of 22MHz cycles */, 1157 ATW_IFST_SIFS_MASK) | 1158 LSHIFT(IEEE80211_DUR_DS_DIFS, ATW_IFST_DIFS_MASK) | 1159 LSHIFT(0x64 /* IEEE80211_DUR_DS_EIFS */, ATW_IFST_EIFS_MASK); 1160 1161 ATW_WRITE(sc, ATW_IFST, ifst); 1162 } 1163 1164 static void 1165 atw_response_times_init(struct atw_softc *sc) 1166 { 1167 /* XXX More magic. Relates to ACK timing? The datasheet seems to 1168 * indicate that the MAC expects at least SIFS + MIRT microseconds 1169 * to pass after it transmits a frame that requires a response; 1170 * it waits at most SIFS + MART microseconds for the response. 1171 * Surely this is not the ACK timeout? 1172 */ 1173 ATW_WRITE(sc, ATW_RSPT, LSHIFT(0xffff, ATW_RSPT_MART_MASK) | 1174 LSHIFT(0xff, ATW_RSPT_MIRT_MASK)); 1175 } 1176 1177 /* Set up the MMI read/write addresses for the baseband. The Tx/Rx 1178 * engines read and write baseband registers after Rx and before 1179 * Tx, respectively. 1180 */ 1181 static void 1182 atw_bbp_io_init(struct atw_softc *sc) 1183 { 1184 uint32_t mmiraddr2; 1185 1186 /* XXX The reference driver does this, but is it *really* 1187 * necessary? 1188 */ 1189 switch (sc->sc_rev) { 1190 case ATW_REVISION_AB: 1191 case ATW_REVISION_AF: 1192 mmiraddr2 = 0x0; 1193 break; 1194 default: 1195 mmiraddr2 = ATW_READ(sc, ATW_MMIRADDR2); 1196 mmiraddr2 &= 1197 ~(ATW_MMIRADDR2_PROREXT|ATW_MMIRADDR2_PRORLEN_MASK); 1198 break; 1199 } 1200 1201 switch (sc->sc_bbptype) { 1202 case ATW_BBPTYPE_INTERSIL: 1203 ATW_WRITE(sc, ATW_MMIWADDR, ATW_MMIWADDR_INTERSIL); 1204 ATW_WRITE(sc, ATW_MMIRADDR1, ATW_MMIRADDR1_INTERSIL); 1205 mmiraddr2 |= ATW_MMIRADDR2_INTERSIL; 1206 break; 1207 case ATW_BBPTYPE_MARVEL: 1208 /* TBD find out the Marvel settings. */ 1209 break; 1210 case ATW_BBPTYPE_RFMD: 1211 default: 1212 ATW_WRITE(sc, ATW_MMIWADDR, ATW_MMIWADDR_RFMD); 1213 ATW_WRITE(sc, ATW_MMIRADDR1, ATW_MMIRADDR1_RFMD); 1214 mmiraddr2 |= ATW_MMIRADDR2_RFMD; 1215 break; 1216 } 1217 ATW_WRITE(sc, ATW_MMIRADDR2, mmiraddr2); 1218 ATW_WRITE(sc, ATW_MACTEST, ATW_MACTEST_MMI_USETXCLK); 1219 } 1220 1221 /* 1222 * atw_init: [ ifnet interface function ] 1223 * 1224 * Initialize the interface. Must be called at splnet(). 1225 */ 1226 int 1227 atw_init(struct ifnet *ifp) 1228 { 1229 struct atw_softc *sc = ifp->if_softc; 1230 struct ieee80211com *ic = &sc->sc_ic; 1231 struct atw_txsoft *txs; 1232 struct atw_rxsoft *rxs; 1233 int i, error = 0; 1234 1235 if ((error = atw_enable(sc)) != 0) 1236 goto out; 1237 1238 /* 1239 * Cancel any pending I/O. This also resets. 1240 */ 1241 atw_stop(ifp, 0); 1242 1243 ic->ic_bss->ni_chan = ic->ic_ibss_chan; 1244 DPRINTF(sc, ("%s: channel %d freq %d flags 0x%04x\n", 1245 __func__, ieee80211_chan2ieee(ic, ic->ic_bss->ni_chan), 1246 ic->ic_bss->ni_chan->ic_freq, ic->ic_bss->ni_chan->ic_flags)); 1247 1248 atw_wcsr_init(sc); 1249 1250 atw_cmdr_init(sc); 1251 1252 /* Set data rate for PLCP Signal field, 1Mbps = 10 x 100Kb/s. 1253 * 1254 * XXX Set transmit power for ATIM, RTS, Beacon. 1255 */ 1256 ATW_WRITE(sc, ATW_PLCPHD, LSHIFT(10, ATW_PLCPHD_SIGNAL_MASK) | 1257 LSHIFT(0xb0, ATW_PLCPHD_SERVICE_MASK)); 1258 1259 atw_tofs2_init(sc); 1260 1261 atw_nar_init(sc); 1262 1263 atw_txlmt_init(sc); 1264 1265 atw_test1_init(sc); 1266 1267 atw_rf_reset(sc); 1268 1269 atw_cfp_init(sc); 1270 1271 atw_tofs0_init(sc); 1272 1273 atw_ifs_init(sc); 1274 1275 /* XXX Fall asleep after one second of inactivity. 1276 * XXX A frame may only dribble in for 65536us. 1277 */ 1278 ATW_WRITE(sc, ATW_RMD, 1279 LSHIFT(1, ATW_RMD_PCNT) | LSHIFT(0xffff, ATW_RMD_RMRD_MASK)); 1280 1281 atw_response_times_init(sc); 1282 1283 atw_bbp_io_init(sc); 1284 1285 ATW_WRITE(sc, ATW_STSR, 0xffffffff); 1286 1287 if ((error = atw_rf3000_init(sc)) != 0) 1288 goto out; 1289 1290 ATW_WRITE(sc, ATW_PAR, sc->sc_busmode); 1291 DPRINTF(sc, ("%s: ATW_PAR %08x busmode %08x\n", sc->sc_dev.dv_xname, 1292 ATW_READ(sc, ATW_PAR), sc->sc_busmode)); 1293 1294 /* 1295 * Initialize the transmit descriptor ring. 1296 */ 1297 memset(sc->sc_txdescs, 0, sizeof(sc->sc_txdescs)); 1298 for (i = 0; i < ATW_NTXDESC; i++) { 1299 sc->sc_txdescs[i].at_ctl = 0; 1300 /* no transmit chaining */ 1301 sc->sc_txdescs[i].at_flags = 0 /* ATW_TXFLAG_TCH */; 1302 sc->sc_txdescs[i].at_buf2 = 1303 htole32(ATW_CDTXADDR(sc, ATW_NEXTTX(i))); 1304 } 1305 /* use ring mode */ 1306 sc->sc_txdescs[ATW_NTXDESC - 1].at_flags |= htole32(ATW_TXFLAG_TER); 1307 ATW_CDTXSYNC(sc, 0, ATW_NTXDESC, 1308 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1309 sc->sc_txfree = ATW_NTXDESC; 1310 sc->sc_txnext = 0; 1311 1312 /* 1313 * Initialize the transmit job descriptors. 1314 */ 1315 SIMPLEQ_INIT(&sc->sc_txfreeq); 1316 SIMPLEQ_INIT(&sc->sc_txdirtyq); 1317 for (i = 0; i < ATW_TXQUEUELEN; i++) { 1318 txs = &sc->sc_txsoft[i]; 1319 txs->txs_mbuf = NULL; 1320 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 1321 } 1322 1323 /* 1324 * Initialize the receive descriptor and receive job 1325 * descriptor rings. 1326 */ 1327 for (i = 0; i < ATW_NRXDESC; i++) { 1328 rxs = &sc->sc_rxsoft[i]; 1329 if (rxs->rxs_mbuf == NULL) { 1330 if ((error = atw_add_rxbuf(sc, i)) != 0) { 1331 printf("%s: unable to allocate or map rx " 1332 "buffer %d, error = %d\n", 1333 sc->sc_dev.dv_xname, i, error); 1334 /* 1335 * XXX Should attempt to run with fewer receive 1336 * XXX buffers instead of just failing. 1337 */ 1338 atw_rxdrain(sc); 1339 goto out; 1340 } 1341 } else 1342 ATW_INIT_RXDESC(sc, i); 1343 } 1344 sc->sc_rxptr = 0; 1345 1346 /* 1347 * Initialize the interrupt mask and enable interrupts. 1348 */ 1349 /* normal interrupts */ 1350 sc->sc_inten = ATW_INTR_TCI | ATW_INTR_TDU | ATW_INTR_RCI | 1351 ATW_INTR_NISS | ATW_INTR_LINKON | ATW_INTR_BCNTC; 1352 1353 /* abnormal interrupts */ 1354 sc->sc_inten |= ATW_INTR_TPS | ATW_INTR_TLT | ATW_INTR_TRT | 1355 ATW_INTR_TUF | ATW_INTR_RDU | ATW_INTR_RPS | ATW_INTR_AISS | 1356 ATW_INTR_FBE | ATW_INTR_LINKOFF | ATW_INTR_TSFTF | ATW_INTR_TSCZ; 1357 1358 sc->sc_linkint_mask = ATW_INTR_LINKON | ATW_INTR_LINKOFF | 1359 ATW_INTR_BCNTC | ATW_INTR_TSFTF | ATW_INTR_TSCZ; 1360 sc->sc_rxint_mask = ATW_INTR_RCI | ATW_INTR_RDU; 1361 sc->sc_txint_mask = ATW_INTR_TCI | ATW_INTR_TUF | ATW_INTR_TLT | 1362 ATW_INTR_TRT; 1363 1364 sc->sc_linkint_mask &= sc->sc_inten; 1365 sc->sc_rxint_mask &= sc->sc_inten; 1366 sc->sc_txint_mask &= sc->sc_inten; 1367 1368 ATW_WRITE(sc, ATW_IER, sc->sc_inten); 1369 ATW_WRITE(sc, ATW_STSR, 0xffffffff); 1370 1371 DPRINTF(sc, ("%s: ATW_IER %08x, inten %08x\n", 1372 sc->sc_dev.dv_xname, ATW_READ(sc, ATW_IER), sc->sc_inten)); 1373 1374 /* 1375 * Give the transmit and receive rings to the ADM8211. 1376 */ 1377 ATW_WRITE(sc, ATW_RDB, ATW_CDRXADDR(sc, sc->sc_rxptr)); 1378 ATW_WRITE(sc, ATW_TDBD, ATW_CDTXADDR(sc, sc->sc_txnext)); 1379 1380 sc->sc_txthresh = 0; 1381 sc->sc_opmode = ATW_NAR_SR | ATW_NAR_ST | 1382 sc->sc_txth[sc->sc_txthresh].txth_opmode; 1383 1384 /* common 802.11 configuration */ 1385 ic->ic_flags &= ~IEEE80211_F_IBSSON; 1386 switch (ic->ic_opmode) { 1387 case IEEE80211_M_STA: 1388 break; 1389 case IEEE80211_M_AHDEMO: /* XXX */ 1390 case IEEE80211_M_IBSS: 1391 ic->ic_flags |= IEEE80211_F_IBSSON; 1392 /*FALLTHROUGH*/ 1393 case IEEE80211_M_HOSTAP: /* XXX */ 1394 break; 1395 case IEEE80211_M_MONITOR: /* XXX */ 1396 break; 1397 } 1398 1399 switch (ic->ic_opmode) { 1400 case IEEE80211_M_AHDEMO: 1401 case IEEE80211_M_HOSTAP: 1402 ic->ic_bss->ni_intval = ic->ic_lintval; 1403 ic->ic_bss->ni_rssi = 0; 1404 ic->ic_bss->ni_rstamp = 0; 1405 break; 1406 default: /* XXX */ 1407 break; 1408 } 1409 1410 sc->sc_wepctl = 0; 1411 1412 atw_write_ssid(sc); 1413 atw_write_sup_rates(sc); 1414 if (ic->ic_caps & IEEE80211_C_WEP) 1415 atw_write_wep(sc); 1416 1417 ic->ic_state = IEEE80211_S_INIT; 1418 1419 /* 1420 * Set the receive filter. This will start the transmit and 1421 * receive processes. 1422 */ 1423 atw_filter_setup(sc); 1424 1425 /* 1426 * Start the receive process. 1427 */ 1428 ATW_WRITE(sc, ATW_RDR, 0x1); 1429 1430 /* 1431 * Note that the interface is now running. 1432 */ 1433 ifp->if_flags |= IFF_RUNNING; 1434 ifp->if_flags &= ~IFF_OACTIVE; 1435 1436 /* send no beacons, yet. */ 1437 atw_start_beacon(sc, 0); 1438 1439 if (ic->ic_opmode == IEEE80211_M_MONITOR) 1440 error = ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1441 else 1442 error = ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 1443 out: 1444 if (error) { 1445 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1446 ifp->if_timer = 0; 1447 printf("%s: interface not running\n", sc->sc_dev.dv_xname); 1448 } 1449 #ifdef ATW_DEBUG 1450 atw_print_regs(sc, "end of init"); 1451 #endif /* ATW_DEBUG */ 1452 1453 return (error); 1454 } 1455 1456 /* enable == 1: host control of RF3000/Si4126 through ATW_SYNCTL. 1457 * 0: MAC control of RF3000/Si4126. 1458 * 1459 * Applies power, or selects RF front-end? Sets reset condition. 1460 * 1461 * TBD support non-RFMD BBP, non-SiLabs synth. 1462 */ 1463 static void 1464 atw_bbp_io_enable(struct atw_softc *sc, int enable) 1465 { 1466 if (enable) { 1467 ATW_WRITE(sc, ATW_SYNRF, 1468 ATW_SYNRF_SELRF|ATW_SYNRF_PE1|ATW_SYNRF_PHYRST); 1469 DELAY(atw_bbp_io_enable_delay); 1470 } else { 1471 ATW_WRITE(sc, ATW_SYNRF, 0); 1472 DELAY(atw_bbp_io_disable_delay); /* shorter for some reason */ 1473 } 1474 } 1475 1476 static int 1477 atw_tune(struct atw_softc *sc) 1478 { 1479 int rc; 1480 u_int chan; 1481 struct ieee80211com *ic = &sc->sc_ic; 1482 1483 chan = ieee80211_chan2ieee(ic, ic->ic_bss->ni_chan); 1484 if (chan == IEEE80211_CHAN_ANY) 1485 panic("%s: chan == IEEE80211_CHAN_ANY\n", __func__); 1486 1487 if (chan == sc->sc_cur_chan) 1488 return 0; 1489 1490 DPRINTF(sc, ("%s: chan %d -> %d\n", sc->sc_dev.dv_xname, 1491 sc->sc_cur_chan, chan)); 1492 1493 atw_idle(sc, ATW_NAR_SR|ATW_NAR_ST); 1494 1495 atw_si4126_tune(sc, chan); 1496 if ((rc = atw_rf3000_tune(sc, chan)) != 0) 1497 printf("%s: failed to tune channel %d\n", sc->sc_dev.dv_xname, 1498 chan); 1499 1500 ATW_WRITE(sc, ATW_NAR, sc->sc_opmode); 1501 DELAY(atw_nar_delay); 1502 ATW_WRITE(sc, ATW_RDR, 0x1); 1503 1504 if (rc == 0) 1505 sc->sc_cur_chan = chan; 1506 1507 return rc; 1508 } 1509 1510 #ifdef ATW_SYNDEBUG 1511 static void 1512 atw_si4126_print(struct atw_softc *sc) 1513 { 1514 struct ifnet *ifp = &sc->sc_ic.ic_if; 1515 u_int addr, val; 1516 1517 if (atw_debug < 3 || (ifp->if_flags & IFF_DEBUG) == 0) 1518 return; 1519 1520 for (addr = 0; addr <= 8; addr++) { 1521 printf("%s: synth[%d] = ", sc->sc_dev.dv_xname, addr); 1522 if (atw_si4126_read(sc, addr, &val) == 0) { 1523 printf("<unknown> (quitting print-out)\n"); 1524 break; 1525 } 1526 printf("%05x\n", val); 1527 } 1528 } 1529 #endif /* ATW_SYNDEBUG */ 1530 1531 /* Tune to channel chan by adjusting the Si4126 RF/IF synthesizer. 1532 * 1533 * The RF/IF synthesizer produces two reference frequencies for 1534 * the RF2948B transceiver. The first frequency the RF2948B requires 1535 * is two times the so-called "intermediate frequency" (IF). Since 1536 * a SAW filter on the radio fixes the IF at 374MHz, I program the 1537 * Si4126 to generate IF LO = 374MHz x 2 = 748MHz. The second 1538 * frequency required by the transceiver is the radio frequency 1539 * (RF). This is a superheterodyne transceiver; for f(chan) the 1540 * center frequency of the channel we are tuning, RF = f(chan) - 1541 * IF. 1542 * 1543 * XXX I am told by SiLabs that the Si4126 will accept a broader range 1544 * of XIN than the 2-25MHz mentioned by the datasheet, even *without* 1545 * XINDIV2 = 1. I've tried this (it is necessary to double R) and it 1546 * works, but I have still programmed for XINDIV2 = 1 to be safe. 1547 */ 1548 static void 1549 atw_si4126_tune(struct atw_softc *sc, u_int chan) 1550 { 1551 u_int mhz; 1552 u_int R; 1553 u_int32_t gpio; 1554 u_int16_t gain; 1555 1556 #ifdef ATW_SYNDEBUG 1557 atw_si4126_print(sc); 1558 #endif /* ATW_SYNDEBUG */ 1559 1560 if (chan == 14) 1561 mhz = 2484; 1562 else 1563 mhz = 2412 + 5 * (chan - 1); 1564 1565 /* Tune IF to 748MHz to suit the IF LO input of the 1566 * RF2494B, which is 2 x IF. No need to set an IF divider 1567 * because an IF in 526MHz - 952MHz is allowed. 1568 * 1569 * XIN is 44.000MHz, so divide it by two to get allowable 1570 * range of 2-25MHz. SiLabs tells me that this is not 1571 * strictly necessary. 1572 */ 1573 1574 if (atw_xindiv2) 1575 R = 44; 1576 else 1577 R = 88; 1578 1579 /* Power-up RF, IF synthesizers. */ 1580 atw_si4126_write(sc, SI4126_POWER, 1581 SI4126_POWER_PDIB|SI4126_POWER_PDRB); 1582 1583 /* set LPWR, too? */ 1584 atw_si4126_write(sc, SI4126_MAIN, 1585 (atw_xindiv2) ? SI4126_MAIN_XINDIV2 : 0); 1586 1587 /* Set the phase-locked loop gain. If RF2 N > 2047, then 1588 * set KP2 to 1. 1589 * 1590 * REFDIF This is different from the reference driver, which 1591 * always sets SI4126_GAIN to 0. 1592 */ 1593 gain = LSHIFT(((mhz - 374) > 2047) ? 1 : 0, SI4126_GAIN_KP2_MASK); 1594 1595 atw_si4126_write(sc, SI4126_GAIN, gain); 1596 1597 /* XIN = 44MHz. 1598 * 1599 * If XINDIV2 = 1, IF = N/(2 * R) * XIN. I choose N = 1496, 1600 * R = 44 so that 1496/(2 * 44) * 44MHz = 748MHz. 1601 * 1602 * If XINDIV2 = 0, IF = N/R * XIN. I choose N = 1496, R = 88 1603 * so that 1496/88 * 44MHz = 748MHz. 1604 */ 1605 atw_si4126_write(sc, SI4126_IFN, 1496); 1606 1607 atw_si4126_write(sc, SI4126_IFR, R); 1608 1609 #ifndef ATW_REFSLAVE 1610 /* Set RF1 arbitrarily. DO NOT configure RF1 after RF2, because 1611 * then RF1 becomes the active RF synthesizer, even on the Si4126, 1612 * which has no RF1! 1613 */ 1614 atw_si4126_write(sc, SI4126_RF1R, R); 1615 1616 atw_si4126_write(sc, SI4126_RF1N, mhz - 374); 1617 #endif 1618 1619 /* N/R * XIN = RF. XIN = 44MHz. We desire RF = mhz - IF, 1620 * where IF = 374MHz. Let's divide XIN to 1MHz. So R = 44. 1621 * Now let's multiply it to mhz. So mhz - IF = N. 1622 */ 1623 atw_si4126_write(sc, SI4126_RF2R, R); 1624 1625 atw_si4126_write(sc, SI4126_RF2N, mhz - 374); 1626 1627 /* wait 100us from power-up for RF, IF to settle */ 1628 DELAY(100); 1629 1630 gpio = ATW_READ(sc, ATW_GPIO); 1631 gpio &= ~(ATW_GPIO_EN_MASK|ATW_GPIO_O_MASK|ATW_GPIO_I_MASK); 1632 gpio |= LSHIFT(1, ATW_GPIO_EN_MASK); 1633 1634 if ((sc->sc_if.if_flags & IFF_LINK1) != 0 && chan != 14) { 1635 /* Set a Prism RF front-end to a special mode for channel 14? 1636 * 1637 * Apparently the SMC2635W needs this, although I don't think 1638 * it has a Prism RF. 1639 */ 1640 gpio |= LSHIFT(1, ATW_GPIO_O_MASK); 1641 } 1642 ATW_WRITE(sc, ATW_GPIO, gpio); 1643 1644 #ifdef ATW_SYNDEBUG 1645 atw_si4126_print(sc); 1646 #endif /* ATW_SYNDEBUG */ 1647 } 1648 1649 /* Baseline initialization of RF3000 BBP: set CCA mode and enable antenna 1650 * diversity. 1651 * 1652 * !!! 1653 * !!! Call this w/ Tx/Rx suspended, atw_idle(, ATW_NAR_ST|ATW_NAR_SR). 1654 * !!! 1655 */ 1656 static int 1657 atw_rf3000_init(struct atw_softc *sc) 1658 { 1659 int rc = 0; 1660 1661 atw_bbp_io_enable(sc, 1); 1662 1663 /* CCA is acquisition sensitive */ 1664 rc = atw_rf3000_write(sc, RF3000_CCACTL, 1665 LSHIFT(RF3000_CCACTL_MODE_BOTH, RF3000_CCACTL_MODE_MASK)); 1666 1667 if (rc != 0) 1668 goto out; 1669 1670 /* enable diversity */ 1671 rc = atw_rf3000_write(sc, RF3000_DIVCTL, RF3000_DIVCTL_ENABLE); 1672 1673 if (rc != 0) 1674 goto out; 1675 1676 /* sensible setting from a binary-only driver */ 1677 rc = atw_rf3000_write(sc, RF3000_GAINCTL, 1678 LSHIFT(0x1d, RF3000_GAINCTL_TXVGC_MASK)); 1679 1680 if (rc != 0) 1681 goto out; 1682 1683 /* magic from a binary-only driver */ 1684 rc = atw_rf3000_write(sc, RF3000_LOGAINCAL, 1685 LSHIFT(0x38, RF3000_LOGAINCAL_CAL_MASK)); 1686 1687 if (rc != 0) 1688 goto out; 1689 1690 rc = atw_rf3000_write(sc, RF3000_HIGAINCAL, RF3000_HIGAINCAL_DSSSPAD); 1691 1692 if (rc != 0) 1693 goto out; 1694 1695 /* XXX Reference driver remarks that Abocom sets this to 50. 1696 * Meaning 0x50, I think.... 50 = 0x32, which would set a bit 1697 * in the "reserved" area of register RF3000_OPTIONS1. 1698 */ 1699 rc = atw_rf3000_write(sc, RF3000_OPTIONS1, sc->sc_rf3000_options1); 1700 1701 if (rc != 0) 1702 goto out; 1703 1704 rc = atw_rf3000_write(sc, RF3000_OPTIONS2, sc->sc_rf3000_options2); 1705 1706 if (rc != 0) 1707 goto out; 1708 1709 out: 1710 atw_bbp_io_enable(sc, 0); 1711 return rc; 1712 } 1713 1714 #ifdef ATW_BBPDEBUG 1715 static void 1716 atw_rf3000_print(struct atw_softc *sc) 1717 { 1718 struct ifnet *ifp = &sc->sc_ic.ic_if; 1719 u_int addr, val; 1720 1721 if (atw_debug < 3 || (ifp->if_flags & IFF_DEBUG) == 0) 1722 return; 1723 1724 for (addr = 0x01; addr <= 0x15; addr++) { 1725 printf("%s: bbp[%d] = \n", sc->sc_dev.dv_xname, addr); 1726 if (atw_rf3000_read(sc, addr, &val) != 0) { 1727 printf("<unknown> (quitting print-out)\n"); 1728 break; 1729 } 1730 printf("%08x\n", val); 1731 } 1732 } 1733 #endif /* ATW_BBPDEBUG */ 1734 1735 /* Set the power settings on the BBP for channel `chan'. */ 1736 static int 1737 atw_rf3000_tune(struct atw_softc *sc, u_int chan) 1738 { 1739 int rc = 0; 1740 u_int32_t reg; 1741 u_int16_t txpower, lpf_cutoff, lna_gs_thresh; 1742 1743 txpower = sc->sc_srom[ATW_SR_TXPOWER(chan)]; 1744 lpf_cutoff = sc->sc_srom[ATW_SR_LPF_CUTOFF(chan)]; 1745 lna_gs_thresh = sc->sc_srom[ATW_SR_LNA_GS_THRESH(chan)]; 1746 1747 /* odd channels: LSB, even channels: MSB */ 1748 if (chan % 2 == 1) { 1749 txpower &= 0xFF; 1750 lpf_cutoff &= 0xFF; 1751 lna_gs_thresh &= 0xFF; 1752 } else { 1753 txpower >>= 8; 1754 lpf_cutoff >>= 8; 1755 lna_gs_thresh >>= 8; 1756 } 1757 1758 #ifdef ATW_BBPDEBUG 1759 atw_rf3000_print(sc); 1760 #endif /* ATW_BBPDEBUG */ 1761 1762 DPRINTF(sc, ("%s: chan %d txpower %02x, lpf_cutoff %02x, " 1763 "lna_gs_thresh %02x\n", 1764 sc->sc_dev.dv_xname, chan, txpower, lpf_cutoff, lna_gs_thresh)); 1765 1766 atw_bbp_io_enable(sc, 1); 1767 1768 if ((rc = atw_rf3000_write(sc, RF3000_GAINCTL, 1769 LSHIFT(txpower, RF3000_GAINCTL_TXVGC_MASK))) != 0) 1770 goto out; 1771 1772 if ((rc = atw_rf3000_write(sc, RF3000_LOGAINCAL, lpf_cutoff)) != 0) 1773 goto out; 1774 1775 if ((rc = atw_rf3000_write(sc, RF3000_HIGAINCAL, lna_gs_thresh)) != 0) 1776 goto out; 1777 1778 rc = atw_rf3000_write(sc, RF3000_OPTIONS1, 0x0); 1779 1780 if (rc != 0) 1781 goto out; 1782 1783 rc = atw_rf3000_write(sc, RF3000_OPTIONS2, RF3000_OPTIONS2_LNAGS_DELAY); 1784 1785 if (rc != 0) 1786 goto out; 1787 1788 #ifdef ATW_BBPDEBUG 1789 atw_rf3000_print(sc); 1790 #endif /* ATW_BBPDEBUG */ 1791 1792 out: 1793 atw_bbp_io_enable(sc, 0); 1794 1795 /* set beacon, rts, atim transmit power */ 1796 reg = ATW_READ(sc, ATW_PLCPHD); 1797 reg &= ~ATW_PLCPHD_SERVICE_MASK; 1798 reg |= LSHIFT(LSHIFT(txpower, RF3000_GAINCTL_TXVGC_MASK), 1799 ATW_PLCPHD_SERVICE_MASK); 1800 ATW_WRITE(sc, ATW_PLCPHD, reg); 1801 DELAY(atw_plcphd_delay); 1802 1803 return rc; 1804 } 1805 1806 /* Write a register on the RF3000 baseband processor using the 1807 * registers provided by the ADM8211 for this purpose. 1808 * 1809 * Return 0 on success. 1810 */ 1811 static int 1812 atw_rf3000_write(struct atw_softc *sc, u_int addr, u_int val) 1813 { 1814 u_int32_t reg; 1815 int i; 1816 1817 reg = sc->sc_bbpctl_wr | 1818 LSHIFT(val & 0xff, ATW_BBPCTL_DATA_MASK) | 1819 LSHIFT(addr & 0x7f, ATW_BBPCTL_ADDR_MASK); 1820 1821 for (i = 20000 / atw_pseudo_milli; --i >= 0; ) { 1822 ATW_WRITE(sc, ATW_BBPCTL, reg); 1823 DELAY(2 * atw_pseudo_milli); 1824 if (ATW_ISSET(sc, ATW_BBPCTL, ATW_BBPCTL_WR) == 0) 1825 break; 1826 } 1827 1828 if (i < 0) { 1829 printf("%s: BBPCTL still busy\n", sc->sc_dev.dv_xname); 1830 return ETIMEDOUT; 1831 } 1832 return 0; 1833 } 1834 1835 /* Read a register on the RF3000 baseband processor using the registers 1836 * the ADM8211 provides for this purpose. 1837 * 1838 * The 7-bit register address is addr. Record the 8-bit data in the register 1839 * in *val. 1840 * 1841 * Return 0 on success. 1842 * 1843 * XXX This does not seem to work. The ADM8211 must require more or 1844 * different magic to read the chip than to write it. Possibly some 1845 * of the magic I have derived from a binary-only driver concerns 1846 * the "chip address" (see the RF3000 manual). 1847 */ 1848 #ifdef ATW_BBPDEBUG 1849 static int 1850 atw_rf3000_read(struct atw_softc *sc, u_int addr, u_int *val) 1851 { 1852 u_int32_t reg; 1853 int i; 1854 1855 for (i = 1000; --i >= 0; ) { 1856 if (ATW_ISSET(sc, ATW_BBPCTL, ATW_BBPCTL_RD|ATW_BBPCTL_WR) == 0) 1857 break; 1858 DELAY(100); 1859 } 1860 1861 if (i < 0) { 1862 printf("%s: start atw_rf3000_read, BBPCTL busy\n", 1863 sc->sc_dev.dv_xname); 1864 return ETIMEDOUT; 1865 } 1866 1867 reg = sc->sc_bbpctl_rd | LSHIFT(addr & 0x7f, ATW_BBPCTL_ADDR_MASK); 1868 1869 ATW_WRITE(sc, ATW_BBPCTL, reg); 1870 1871 for (i = 1000; --i >= 0; ) { 1872 DELAY(100); 1873 if (ATW_ISSET(sc, ATW_BBPCTL, ATW_BBPCTL_RD) == 0) 1874 break; 1875 } 1876 1877 ATW_CLR(sc, ATW_BBPCTL, ATW_BBPCTL_RD); 1878 1879 if (i < 0) { 1880 printf("%s: atw_rf3000_read wrote %08x; BBPCTL still busy\n", 1881 sc->sc_dev.dv_xname, reg); 1882 return ETIMEDOUT; 1883 } 1884 if (val != NULL) 1885 *val = MASK_AND_RSHIFT(reg, ATW_BBPCTL_DATA_MASK); 1886 return 0; 1887 } 1888 #endif /* ATW_BBPDEBUG */ 1889 1890 /* Write a register on the Si4126 RF/IF synthesizer using the registers 1891 * provided by the ADM8211 for that purpose. 1892 * 1893 * val is 18 bits of data, and val is the 4-bit address of the register. 1894 * 1895 * Return 0 on success. 1896 */ 1897 static void 1898 atw_si4126_write(struct atw_softc *sc, u_int addr, u_int val) 1899 { 1900 uint32_t bits, mask, reg; 1901 const int nbits = 22; 1902 1903 KASSERT((addr & ~PRESHIFT(SI4126_TWI_ADDR_MASK)) == 0); 1904 KASSERT((val & ~PRESHIFT(SI4126_TWI_DATA_MASK)) == 0); 1905 1906 bits = LSHIFT(val, SI4126_TWI_DATA_MASK) | 1907 LSHIFT(addr, SI4126_TWI_ADDR_MASK); 1908 1909 reg = ATW_SYNRF_SELSYN; 1910 /* reference driver: reset Si4126 serial bus to initial 1911 * conditions? 1912 */ 1913 ATW_WRITE(sc, ATW_SYNRF, reg | ATW_SYNRF_LEIF); 1914 ATW_WRITE(sc, ATW_SYNRF, reg); 1915 1916 for (mask = BIT(nbits - 1); mask != 0; mask >>= 1) { 1917 if ((bits & mask) != 0) 1918 reg |= ATW_SYNRF_SYNDATA; 1919 else 1920 reg &= ~ATW_SYNRF_SYNDATA; 1921 ATW_WRITE(sc, ATW_SYNRF, reg); 1922 ATW_WRITE(sc, ATW_SYNRF, reg | ATW_SYNRF_SYNCLK); 1923 ATW_WRITE(sc, ATW_SYNRF, reg); 1924 } 1925 ATW_WRITE(sc, ATW_SYNRF, reg | ATW_SYNRF_LEIF); 1926 ATW_WRITE(sc, ATW_SYNRF, 0x0); 1927 } 1928 1929 /* Read 18-bit data from the 4-bit address addr in Si4126 1930 * RF synthesizer and write the data to *val. Return 0 on success. 1931 * 1932 * XXX This does not seem to work. The ADM8211 must require more or 1933 * different magic to read the chip than to write it. 1934 */ 1935 #ifdef ATW_SYNDEBUG 1936 static int 1937 atw_si4126_read(struct atw_softc *sc, u_int addr, u_int *val) 1938 { 1939 u_int32_t reg; 1940 int i; 1941 1942 KASSERT((addr & ~PRESHIFT(SI4126_TWI_ADDR_MASK)) == 0); 1943 1944 for (i = 1000; --i >= 0; ) { 1945 if (ATW_ISSET(sc, ATW_SYNCTL, ATW_SYNCTL_RD|ATW_SYNCTL_WR) == 0) 1946 break; 1947 DELAY(100); 1948 } 1949 1950 if (i < 0) { 1951 printf("%s: start atw_si4126_read, SYNCTL busy\n", 1952 sc->sc_dev.dv_xname); 1953 return ETIMEDOUT; 1954 } 1955 1956 reg = sc->sc_synctl_rd | LSHIFT(addr, ATW_SYNCTL_DATA_MASK); 1957 1958 ATW_WRITE(sc, ATW_SYNCTL, reg); 1959 1960 for (i = 1000; --i >= 0; ) { 1961 DELAY(100); 1962 if (ATW_ISSET(sc, ATW_SYNCTL, ATW_SYNCTL_RD) == 0) 1963 break; 1964 } 1965 1966 ATW_CLR(sc, ATW_SYNCTL, ATW_SYNCTL_RD); 1967 1968 if (i < 0) { 1969 printf("%s: atw_si4126_read wrote %#08x, SYNCTL still busy\n", 1970 sc->sc_dev.dv_xname, reg); 1971 return ETIMEDOUT; 1972 } 1973 if (val != NULL) 1974 *val = MASK_AND_RSHIFT(ATW_READ(sc, ATW_SYNCTL), 1975 ATW_SYNCTL_DATA_MASK); 1976 return 0; 1977 } 1978 #endif /* ATW_SYNDEBUG */ 1979 1980 /* XXX is the endianness correct? test. */ 1981 #define atw_calchash(addr) \ 1982 (ether_crc32_le((addr), IEEE80211_ADDR_LEN) & BITS(5, 0)) 1983 1984 /* 1985 * atw_filter_setup: 1986 * 1987 * Set the ADM8211's receive filter. 1988 */ 1989 static void 1990 atw_filter_setup(struct atw_softc *sc) 1991 { 1992 struct ieee80211com *ic = &sc->sc_ic; 1993 struct ethercom *ec = &ic->ic_ec; 1994 struct ifnet *ifp = &sc->sc_ic.ic_if; 1995 int hash; 1996 u_int32_t hashes[2]; 1997 struct ether_multi *enm; 1998 struct ether_multistep step; 1999 2000 /* According to comments in tlp_al981_filter_setup 2001 * (dev/ic/tulip.c) the ADMtek AL981 does not like for its 2002 * multicast filter to be set while it is running. Hopefully 2003 * the ADM8211 is not the same! 2004 */ 2005 if ((ifp->if_flags & IFF_RUNNING) != 0) 2006 atw_idle(sc, ATW_NAR_SR); 2007 2008 sc->sc_opmode &= ~(ATW_NAR_PR|ATW_NAR_MM); 2009 2010 /* XXX in scan mode, do not filter packets. Maybe this is 2011 * unnecessary. 2012 */ 2013 if (ic->ic_state == IEEE80211_S_SCAN || 2014 (ifp->if_flags & IFF_PROMISC) != 0) { 2015 sc->sc_opmode |= ATW_NAR_PR; 2016 goto allmulti; 2017 } 2018 2019 hashes[0] = hashes[1] = 0x0; 2020 2021 /* 2022 * Program the 64-bit multicast hash filter. 2023 */ 2024 ETHER_FIRST_MULTI(step, ec, enm); 2025 while (enm != NULL) { 2026 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 2027 ETHER_ADDR_LEN) != 0) 2028 goto allmulti; 2029 2030 hash = atw_calchash(enm->enm_addrlo); 2031 hashes[hash >> 5] |= 1 << (hash & 0x1f); 2032 ETHER_NEXT_MULTI(step, enm); 2033 } 2034 ifp->if_flags &= ~IFF_ALLMULTI; 2035 goto setit; 2036 2037 allmulti: 2038 ifp->if_flags |= IFF_ALLMULTI; 2039 hashes[0] = hashes[1] = 0xffffffff; 2040 2041 setit: 2042 ATW_WRITE(sc, ATW_MAR0, hashes[0]); 2043 ATW_WRITE(sc, ATW_MAR1, hashes[1]); 2044 ATW_WRITE(sc, ATW_NAR, sc->sc_opmode); 2045 DELAY(atw_nar_delay); 2046 2047 DPRINTF(sc, ("%s: ATW_NAR %08x opmode %08x\n", sc->sc_dev.dv_xname, 2048 ATW_READ(sc, ATW_NAR), sc->sc_opmode)); 2049 } 2050 2051 /* Tell the ADM8211 our preferred BSSID. The ADM8211 must match 2052 * a beacon's BSSID and SSID against the preferred BSSID and SSID 2053 * before it will raise ATW_INTR_LINKON. When the ADM8211 receives 2054 * no beacon with the preferred BSSID and SSID in the number of 2055 * beacon intervals given in ATW_BPLI, then it raises ATW_INTR_LINKOFF. 2056 */ 2057 static void 2058 atw_write_bssid(struct atw_softc *sc) 2059 { 2060 struct ieee80211com *ic = &sc->sc_ic; 2061 u_int8_t *bssid; 2062 2063 bssid = ic->ic_bss->ni_bssid; 2064 2065 ATW_WRITE(sc, ATW_BSSID0, 2066 LSHIFT(bssid[0], ATW_BSSID0_BSSIDB0_MASK) | 2067 LSHIFT(bssid[1], ATW_BSSID0_BSSIDB1_MASK) | 2068 LSHIFT(bssid[2], ATW_BSSID0_BSSIDB2_MASK) | 2069 LSHIFT(bssid[3], ATW_BSSID0_BSSIDB3_MASK)); 2070 2071 ATW_WRITE(sc, ATW_ABDA1, 2072 (ATW_READ(sc, ATW_ABDA1) & 2073 ~(ATW_ABDA1_BSSIDB4_MASK|ATW_ABDA1_BSSIDB5_MASK)) | 2074 LSHIFT(bssid[4], ATW_ABDA1_BSSIDB4_MASK) | 2075 LSHIFT(bssid[5], ATW_ABDA1_BSSIDB5_MASK)); 2076 2077 DPRINTF(sc, ("%s: BSSID %s -> ", sc->sc_dev.dv_xname, 2078 ether_sprintf(sc->sc_bssid))); 2079 DPRINTF(sc, ("%s\n", ether_sprintf(bssid))); 2080 2081 memcpy(sc->sc_bssid, bssid, sizeof(sc->sc_bssid)); 2082 } 2083 2084 /* Write buflen bytes from buf to SRAM starting at the SRAM's ofs'th 2085 * 16-bit word. 2086 */ 2087 static void 2088 atw_write_sram(struct atw_softc *sc, u_int ofs, u_int8_t *buf, u_int buflen) 2089 { 2090 u_int i; 2091 u_int8_t *ptr; 2092 2093 memcpy(&sc->sc_sram[ofs], buf, buflen); 2094 2095 KASSERT(ofs % 2 == 0 && buflen % 2 == 0); 2096 2097 KASSERT(buflen + ofs <= sc->sc_sramlen); 2098 2099 ptr = &sc->sc_sram[ofs]; 2100 2101 for (i = 0; i < buflen; i += 2) { 2102 ATW_WRITE(sc, ATW_WEPCTL, ATW_WEPCTL_WR | 2103 LSHIFT((ofs + i) / 2, ATW_WEPCTL_TBLADD_MASK)); 2104 DELAY(atw_writewep_delay); 2105 2106 ATW_WRITE(sc, ATW_WESK, 2107 LSHIFT((ptr[i + 1] << 8) | ptr[i], ATW_WESK_DATA_MASK)); 2108 DELAY(atw_writewep_delay); 2109 } 2110 ATW_WRITE(sc, ATW_WEPCTL, sc->sc_wepctl); /* restore WEP condition */ 2111 2112 if (sc->sc_if.if_flags & IFF_DEBUG) { 2113 int n_octets = 0; 2114 printf("%s: wrote %d bytes at 0x%x wepctl 0x%08x\n", 2115 sc->sc_dev.dv_xname, buflen, ofs, sc->sc_wepctl); 2116 for (i = 0; i < buflen; i++) { 2117 printf(" %02x", ptr[i]); 2118 if (++n_octets % 24 == 0) 2119 printf("\n"); 2120 } 2121 if (n_octets % 24 != 0) 2122 printf("\n"); 2123 } 2124 } 2125 2126 /* Write WEP keys from the ieee80211com to the ADM8211's SRAM. */ 2127 static void 2128 atw_write_wep(struct atw_softc *sc) 2129 { 2130 struct ieee80211com *ic = &sc->sc_ic; 2131 /* SRAM shared-key record format: key0 flags key1 ... key12 */ 2132 u_int8_t buf[IEEE80211_WEP_NKID] 2133 [1 /* key[0] */ + 1 /* flags */ + 12 /* key[1 .. 12] */]; 2134 u_int32_t reg; 2135 int i; 2136 2137 sc->sc_wepctl = 0; 2138 ATW_WRITE(sc, ATW_WEPCTL, sc->sc_wepctl); 2139 2140 if ((ic->ic_flags & IEEE80211_F_PRIVACY) == 0) 2141 return; 2142 2143 memset(&buf[0][0], 0, sizeof(buf)); 2144 2145 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2146 if (ic->ic_nw_keys[i].wk_len > 5) { 2147 buf[i][1] = ATW_WEP_ENABLED | ATW_WEP_104BIT; 2148 } else if (ic->ic_nw_keys[i].wk_len != 0) { 2149 buf[i][1] = ATW_WEP_ENABLED; 2150 } else { 2151 buf[i][1] = 0; 2152 continue; 2153 } 2154 buf[i][0] = ic->ic_nw_keys[i].wk_key[0]; 2155 memcpy(&buf[i][2], &ic->ic_nw_keys[i].wk_key[1], 2156 ic->ic_nw_keys[i].wk_len - 1); 2157 } 2158 2159 reg = ATW_READ(sc, ATW_MACTEST); 2160 reg |= ATW_MACTEST_MMI_USETXCLK | ATW_MACTEST_FORCE_KEYID; 2161 reg &= ~ATW_MACTEST_KEYID_MASK; 2162 reg |= LSHIFT(ic->ic_wep_txkey, ATW_MACTEST_KEYID_MASK); 2163 ATW_WRITE(sc, ATW_MACTEST, reg); 2164 2165 sc->sc_wepctl = ATW_WEPCTL_WEPENABLE; 2166 2167 switch (sc->sc_rev) { 2168 case ATW_REVISION_AB: 2169 case ATW_REVISION_AF: 2170 /* Bypass WEP on Rx. */ 2171 sc->sc_wepctl |= ATW_WEPCTL_WEPRXBYP; 2172 break; 2173 default: 2174 break; 2175 } 2176 2177 atw_write_sram(sc, ATW_SRAM_ADDR_SHARED_KEY, (u_int8_t*)&buf[0][0], 2178 sizeof(buf)); 2179 } 2180 2181 const struct timeval atw_beacon_mininterval = {.tv_sec = 1, .tv_usec = 0}; 2182 2183 static void 2184 atw_recv_mgmt(struct ieee80211com *ic, struct mbuf *m, 2185 struct ieee80211_node *ni, int subtype, int rssi, u_int32_t rstamp) 2186 { 2187 struct atw_softc *sc = (struct atw_softc*)ic->ic_softc; 2188 2189 switch (subtype) { 2190 case IEEE80211_FC0_SUBTYPE_PROBE_REQ: 2191 /* do nothing: hardware answers probe request */ 2192 break; 2193 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 2194 case IEEE80211_FC0_SUBTYPE_BEACON: 2195 atw_recv_beacon(ic, m, ni, subtype, rssi, rstamp); 2196 break; 2197 default: 2198 (*sc->sc_recv_mgmt)(ic, m, ni, subtype, rssi, rstamp); 2199 break; 2200 } 2201 return; 2202 } 2203 2204 static int 2205 do_slow_print(struct atw_softc *sc, int *did_print) 2206 { 2207 if ((sc->sc_if.if_flags & IFF_LINK0) == 0) 2208 return 0; 2209 if (!*did_print && (sc->sc_if.if_flags & IFF_DEBUG) == 0 && 2210 !ratecheck(&sc->sc_last_beacon, &atw_beacon_mininterval)) 2211 return 0; 2212 2213 *did_print = 1; 2214 return 1; 2215 } 2216 2217 /* In ad hoc mode, atw_recv_beacon is responsible for the coalescence 2218 * of IBSSs with like SSID/channel but different BSSID. It joins the 2219 * oldest IBSS (i.e., with greatest TSF time), since that is the WECA 2220 * convention. Possibly the ADMtek chip does this for us; I will have 2221 * to test to find out. 2222 * 2223 * XXX we should add the duration field of the received beacon to 2224 * the TSF time it contains before comparing it with the ADM8211's 2225 * TSF. 2226 */ 2227 static void 2228 atw_recv_beacon(struct ieee80211com *ic, struct mbuf *m0, 2229 struct ieee80211_node *ni, int subtype, int rssi, u_int32_t rstamp) 2230 { 2231 struct atw_softc *sc; 2232 struct ieee80211_frame *wh; 2233 uint32_t tsftl, tsfth; 2234 uint32_t bcn_tsftl, bcn_tsfth; 2235 int did_print = 0, sign; 2236 union { 2237 uint32_t words[2]; 2238 uint8_t tstamp[8]; 2239 } u; 2240 2241 sc = (struct atw_softc*)ic->ic_if.if_softc; 2242 2243 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 2244 2245 if (ic->ic_state != IEEE80211_S_RUN) 2246 return; 2247 2248 atw_tsft(sc, &tsfth, &tsftl); 2249 2250 (void)memcpy(&u, &ni->ni_tstamp[0], sizeof(u)); 2251 bcn_tsftl = le32toh(u.words[0]); 2252 bcn_tsfth = le32toh(u.words[1]); 2253 2254 /* we are faster, let the other guy catch up */ 2255 if (bcn_tsfth < tsfth) 2256 sign = -1; 2257 else if (bcn_tsfth == tsfth && bcn_tsftl < tsftl) 2258 sign = -1; 2259 else 2260 sign = 1; 2261 2262 if (memcmp(ni->ni_bssid, ic->ic_bss->ni_bssid, 2263 IEEE80211_ADDR_LEN) == 0) { 2264 if (!do_slow_print(sc, &did_print)) 2265 return; 2266 printf("%s: tsft offset %s%" PRIu64 "\n", sc->sc_dev.dv_xname, 2267 (sign < 0) ? "-" : "", 2268 (sign < 0) 2269 ? ((((uint64_t)tsfth << 32) | tsftl) - 2270 (((uint64_t)bcn_tsfth << 32) | bcn_tsftl)) 2271 : ((((uint64_t)bcn_tsfth << 32) | bcn_tsftl) - 2272 (((uint64_t)tsfth << 32) | tsftl))); 2273 return; 2274 } 2275 2276 if (sign < 0) 2277 return; 2278 2279 if (ieee80211_match_bss(ic, ni) != 0) 2280 return; 2281 2282 if (do_slow_print(sc, &did_print)) { 2283 printf("%s: atw_recv_beacon: bssid mismatch %s\n", 2284 sc->sc_dev.dv_xname, ether_sprintf(ni->ni_bssid)); 2285 } 2286 2287 if (ic->ic_opmode != IEEE80211_M_IBSS) 2288 return; 2289 2290 if (do_slow_print(sc, &did_print)) { 2291 printf("%s: my tsft %" PRIu64 " beacon tsft %" PRIu64 "\n", 2292 sc->sc_dev.dv_xname, ((uint64_t)tsfth << 32) | tsftl, 2293 ((uint64_t)bcn_tsfth << 32) | bcn_tsftl); 2294 } 2295 2296 wh = mtod(m0, struct ieee80211_frame *); 2297 2298 if (do_slow_print(sc, &did_print)) { 2299 printf("%s: sync TSF with %s\n", 2300 sc->sc_dev.dv_xname, ether_sprintf(wh->i_addr2)); 2301 } 2302 2303 ic->ic_flags &= ~IEEE80211_F_SIBSS; 2304 2305 (void)memcpy(&ic->ic_bss->ni_tstamp[0], &u, sizeof(u)); 2306 2307 atw_tsf(sc); 2308 2309 /* negotiate rates with new IBSS */ 2310 ieee80211_fix_rate(ic, ni, IEEE80211_F_DOFRATE | 2311 IEEE80211_F_DONEGO | IEEE80211_F_DODEL); 2312 if (ni->ni_rates.rs_nrates == 0) { 2313 if (do_slow_print(sc, &did_print)) { 2314 printf("%s: rates mismatch, BSSID %s\n", 2315 sc->sc_dev.dv_xname, ether_sprintf(ni->ni_bssid)); 2316 } 2317 return; 2318 } 2319 2320 if (do_slow_print(sc, &did_print)) { 2321 printf("%s: sync BSSID %s -> ", 2322 sc->sc_dev.dv_xname, ether_sprintf(ic->ic_bss->ni_bssid)); 2323 printf("%s ", ether_sprintf(ni->ni_bssid)); 2324 printf("(from %s)\n", ether_sprintf(wh->i_addr2)); 2325 } 2326 2327 (*ic->ic_node_copy)(ic, ic->ic_bss, ni); 2328 2329 atw_write_bssid(sc); 2330 atw_start_beacon(sc, 1); 2331 } 2332 2333 /* Write the SSID in the ieee80211com to the SRAM on the ADM8211. 2334 * In ad hoc mode, the SSID is written to the beacons sent by the 2335 * ADM8211. In both ad hoc and infrastructure mode, beacons received 2336 * with matching SSID affect ATW_INTR_LINKON/ATW_INTR_LINKOFF 2337 * indications. 2338 */ 2339 static void 2340 atw_write_ssid(struct atw_softc *sc) 2341 { 2342 struct ieee80211com *ic = &sc->sc_ic; 2343 /* 34 bytes are reserved in ADM8211 SRAM for the SSID, but 2344 * it only expects the element length, not its ID. 2345 */ 2346 u_int8_t buf[roundup(1 /* length */ + IEEE80211_NWID_LEN, 2)]; 2347 2348 memset(buf, 0, sizeof(buf)); 2349 buf[0] = ic->ic_bss->ni_esslen; 2350 memcpy(&buf[1], ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen); 2351 2352 atw_write_sram(sc, ATW_SRAM_ADDR_SSID, buf, 2353 roundup(1 + ic->ic_bss->ni_esslen, 2)); 2354 } 2355 2356 /* Write the supported rates in the ieee80211com to the SRAM of the ADM8211. 2357 * In ad hoc mode, the supported rates are written to beacons sent by the 2358 * ADM8211. 2359 */ 2360 static void 2361 atw_write_sup_rates(struct atw_softc *sc) 2362 { 2363 struct ieee80211com *ic = &sc->sc_ic; 2364 /* 14 bytes are probably (XXX) reserved in the ADM8211 SRAM for 2365 * supported rates 2366 */ 2367 u_int8_t buf[roundup(1 /* length */ + IEEE80211_RATE_SIZE, 2)]; 2368 2369 memset(buf, 0, sizeof(buf)); 2370 2371 buf[0] = ic->ic_bss->ni_rates.rs_nrates; 2372 2373 memcpy(&buf[1], ic->ic_bss->ni_rates.rs_rates, 2374 ic->ic_bss->ni_rates.rs_nrates); 2375 2376 atw_write_sram(sc, ATW_SRAM_ADDR_SUPRATES, buf, sizeof(buf)); 2377 } 2378 2379 /* Start/stop sending beacons. */ 2380 void 2381 atw_start_beacon(struct atw_softc *sc, int start) 2382 { 2383 struct ieee80211com *ic = &sc->sc_ic; 2384 uint16_t chan; 2385 uint32_t bcnt, bpli, cap0, cap1, capinfo; 2386 size_t len; 2387 2388 if (ATW_IS_ENABLED(sc) == 0) 2389 return; 2390 2391 /* start beacons */ 2392 len = sizeof(struct ieee80211_frame) + 2393 8 /* timestamp */ + 2 /* beacon interval */ + 2394 2 /* capability info */ + 2395 2 + ic->ic_bss->ni_esslen /* SSID element */ + 2396 2 + ic->ic_bss->ni_rates.rs_nrates /* rates element */ + 2397 3 /* DS parameters */ + 2398 IEEE80211_CRC_LEN; 2399 2400 bcnt = ATW_READ(sc, ATW_BCNT) & ~ATW_BCNT_BCNT_MASK; 2401 cap0 = ATW_READ(sc, ATW_CAP0) & ~ATW_CAP0_CHN_MASK; 2402 cap1 = ATW_READ(sc, ATW_CAP1) & ~ATW_CAP1_CAPI_MASK; 2403 2404 ATW_WRITE(sc, ATW_BCNT, bcnt); 2405 ATW_WRITE(sc, ATW_CAP1, cap1); 2406 2407 if (!start) 2408 return; 2409 2410 /* TBD use ni_capinfo */ 2411 2412 capinfo = 0; 2413 if (sc->sc_flags & ATWF_SHORT_PREAMBLE) 2414 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2415 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2416 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2417 2418 switch (ic->ic_opmode) { 2419 case IEEE80211_M_IBSS: 2420 len += 4; /* IBSS parameters */ 2421 capinfo |= IEEE80211_CAPINFO_IBSS; 2422 break; 2423 case IEEE80211_M_HOSTAP: 2424 /* XXX 6-byte minimum TIM */ 2425 len += atw_beacon_len_adjust; 2426 capinfo |= IEEE80211_CAPINFO_ESS; 2427 break; 2428 default: 2429 return; 2430 } 2431 2432 /* set listen interval 2433 * XXX do software units agree w/ hardware? 2434 */ 2435 bpli = LSHIFT(ic->ic_bss->ni_intval, ATW_BPLI_BP_MASK) | 2436 LSHIFT(ic->ic_lintval / ic->ic_bss->ni_intval, ATW_BPLI_LI_MASK); 2437 2438 chan = ieee80211_chan2ieee(ic, ic->ic_bss->ni_chan); 2439 2440 bcnt |= LSHIFT(len, ATW_BCNT_BCNT_MASK); 2441 cap0 |= LSHIFT(chan, ATW_CAP0_CHN_MASK); 2442 cap1 |= LSHIFT(capinfo, ATW_CAP1_CAPI_MASK); 2443 2444 ATW_WRITE(sc, ATW_BCNT, bcnt); 2445 ATW_WRITE(sc, ATW_BPLI, bpli); 2446 ATW_WRITE(sc, ATW_CAP0, cap0); 2447 ATW_WRITE(sc, ATW_CAP1, cap1); 2448 2449 DPRINTF(sc, ("%s: atw_start_beacon reg[ATW_BCNT] = %08x\n", 2450 sc->sc_dev.dv_xname, bcnt)); 2451 2452 DPRINTF(sc, ("%s: atw_start_beacon reg[ATW_CAP1] = %08x\n", 2453 sc->sc_dev.dv_xname, cap1)); 2454 } 2455 2456 /* Return the 32 lsb of the last TSFT divisible by ival. */ 2457 static __inline uint32_t 2458 atw_last_even_tsft(uint32_t tsfth, uint32_t tsftl, uint32_t ival) 2459 { 2460 /* Following the reference driver's lead, I compute 2461 * 2462 * (uint32_t)((((uint64_t)tsfth << 32) | tsftl) % ival) 2463 * 2464 * without using 64-bit arithmetic, using the following 2465 * relationship: 2466 * 2467 * (0x100000000 * H + L) % m 2468 * = ((0x100000000 % m) * H + L) % m 2469 * = (((0xffffffff + 1) % m) * H + L) % m 2470 * = ((0xffffffff % m + 1 % m) * H + L) % m 2471 * = ((0xffffffff % m + 1) * H + L) % m 2472 */ 2473 return ((0xFFFFFFFF % ival + 1) * tsfth + tsftl) % ival; 2474 } 2475 2476 static __inline void 2477 atw_tsft(struct atw_softc *sc, uint32_t *tsfth, uint32_t *tsftl) 2478 { 2479 int i; 2480 for (i = 0; i < 2; i++) { 2481 *tsfth = ATW_READ(sc, ATW_TSFTH); 2482 *tsftl = ATW_READ(sc, ATW_TSFTL); 2483 if (ATW_READ(sc, ATW_TSFTH) == *tsfth) 2484 break; 2485 } 2486 } 2487 2488 /* If we've created an IBSS, write the TSF time in the ADM8211 to 2489 * the ieee80211com. 2490 * 2491 * Predict the next target beacon transmission time (TBTT) and 2492 * write it to the ADM8211. 2493 */ 2494 static void 2495 atw_tsf(struct atw_softc *sc) 2496 { 2497 #define TBTTOFS 20 /* TU */ 2498 2499 struct ieee80211com *ic = &sc->sc_ic; 2500 uint32_t ival, past_even, tbtt, tsfth, tsftl; 2501 union { 2502 uint32_t words[2]; 2503 uint8_t tstamp[8]; 2504 } u; 2505 2506 if ((ic->ic_opmode == IEEE80211_M_HOSTAP) || 2507 ((ic->ic_opmode == IEEE80211_M_IBSS) && 2508 (ic->ic_flags & IEEE80211_F_SIBSS))) { 2509 atw_tsft(sc, &tsfth, &tsftl); 2510 u.words[0] = htole32(tsftl); 2511 u.words[1] = htole32(tsfth); 2512 (void)memcpy(&ic->ic_bss->ni_tstamp[0], &u, 2513 sizeof(ic->ic_bss->ni_tstamp)); 2514 } else { 2515 (void)memcpy(&u, &ic->ic_bss->ni_tstamp[0], sizeof(u)); 2516 tsftl = le32toh(u.words[0]); 2517 tsfth = le32toh(u.words[1]); 2518 } 2519 2520 ival = ic->ic_bss->ni_intval * IEEE80211_DUR_TU; 2521 2522 /* We sent/received the last beacon `past' microseconds 2523 * after the interval divided the TSF timer. 2524 */ 2525 past_even = tsftl - atw_last_even_tsft(tsfth, tsftl, ival); 2526 2527 /* Skip ten beacons so that the TBTT cannot pass before 2528 * we've programmed it. Ten is an arbitrary number. 2529 */ 2530 tbtt = past_even + ival * 10; 2531 2532 ATW_WRITE(sc, ATW_TOFS1, 2533 LSHIFT(1, ATW_TOFS1_TSFTOFSR_MASK) | 2534 LSHIFT(TBTTOFS, ATW_TOFS1_TBTTOFS_MASK) | 2535 LSHIFT(MASK_AND_RSHIFT(tbtt - TBTTOFS * IEEE80211_DUR_TU, 2536 ATW_TBTTPRE_MASK), ATW_TOFS1_TBTTPRE_MASK)); 2537 #undef TBTTOFS 2538 } 2539 2540 static void 2541 atw_next_scan(void *arg) 2542 { 2543 struct atw_softc *sc = arg; 2544 struct ieee80211com *ic = &sc->sc_ic; 2545 int s; 2546 2547 /* don't call atw_start w/o network interrupts blocked */ 2548 s = splnet(); 2549 if (ic->ic_state == IEEE80211_S_SCAN) 2550 ieee80211_next_scan(ic); 2551 splx(s); 2552 } 2553 2554 /* Synchronize the hardware state with the software state. */ 2555 static int 2556 atw_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 2557 { 2558 struct ifnet *ifp = &ic->ic_if; 2559 struct atw_softc *sc = ifp->if_softc; 2560 enum ieee80211_state ostate; 2561 int error; 2562 2563 ostate = ic->ic_state; 2564 2565 if (nstate == IEEE80211_S_INIT) { 2566 callout_stop(&sc->sc_scan_ch); 2567 sc->sc_cur_chan = IEEE80211_CHAN_ANY; 2568 atw_start_beacon(sc, 0); 2569 return (*sc->sc_newstate)(ic, nstate, arg); 2570 } 2571 2572 if ((error = atw_tune(sc)) != 0) 2573 return error; 2574 2575 switch (nstate) { 2576 case IEEE80211_S_ASSOC: 2577 break; 2578 case IEEE80211_S_INIT: 2579 panic("%s: unexpected state IEEE80211_S_INIT\n", __func__); 2580 break; 2581 case IEEE80211_S_SCAN: 2582 callout_reset(&sc->sc_scan_ch, atw_dwelltime * hz / 1000, 2583 atw_next_scan, sc); 2584 2585 break; 2586 case IEEE80211_S_RUN: 2587 if (ic->ic_opmode == IEEE80211_M_STA) 2588 break; 2589 /*FALLTHROUGH*/ 2590 case IEEE80211_S_AUTH: 2591 atw_write_bssid(sc); 2592 atw_write_ssid(sc); 2593 atw_write_sup_rates(sc); 2594 2595 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 2596 ic->ic_opmode == IEEE80211_M_MONITOR) 2597 break; 2598 2599 /* set listen interval 2600 * XXX do software units agree w/ hardware? 2601 */ 2602 ATW_WRITE(sc, ATW_BPLI, 2603 LSHIFT(ic->ic_bss->ni_intval, ATW_BPLI_BP_MASK) | 2604 LSHIFT(ic->ic_lintval / ic->ic_bss->ni_intval, 2605 ATW_BPLI_LI_MASK)); 2606 2607 DPRINTF(sc, ("%s: reg[ATW_BPLI] = %08x\n", 2608 sc->sc_dev.dv_xname, ATW_READ(sc, ATW_BPLI))); 2609 2610 atw_tsf(sc); 2611 break; 2612 } 2613 2614 if (nstate != IEEE80211_S_SCAN) 2615 callout_stop(&sc->sc_scan_ch); 2616 2617 if (nstate == IEEE80211_S_RUN && 2618 (ic->ic_opmode == IEEE80211_M_HOSTAP || 2619 ic->ic_opmode == IEEE80211_M_IBSS)) 2620 atw_start_beacon(sc, 1); 2621 else 2622 atw_start_beacon(sc, 0); 2623 2624 error = (*sc->sc_newstate)(ic, nstate, arg); 2625 2626 if (ostate == IEEE80211_S_INIT && nstate == IEEE80211_S_SCAN) 2627 atw_write_bssid(sc); 2628 2629 return error; 2630 } 2631 2632 /* 2633 * atw_add_rxbuf: 2634 * 2635 * Add a receive buffer to the indicated descriptor. 2636 */ 2637 int 2638 atw_add_rxbuf(struct atw_softc *sc, int idx) 2639 { 2640 struct atw_rxsoft *rxs = &sc->sc_rxsoft[idx]; 2641 struct mbuf *m; 2642 int error; 2643 2644 MGETHDR(m, M_DONTWAIT, MT_DATA); 2645 if (m == NULL) 2646 return (ENOBUFS); 2647 2648 MCLGET(m, M_DONTWAIT); 2649 if ((m->m_flags & M_EXT) == 0) { 2650 m_freem(m); 2651 return (ENOBUFS); 2652 } 2653 2654 if (rxs->rxs_mbuf != NULL) 2655 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2656 2657 rxs->rxs_mbuf = m; 2658 2659 error = bus_dmamap_load(sc->sc_dmat, rxs->rxs_dmamap, 2660 m->m_ext.ext_buf, m->m_ext.ext_size, NULL, 2661 BUS_DMA_READ|BUS_DMA_NOWAIT); 2662 if (error) { 2663 printf("%s: can't load rx DMA map %d, error = %d\n", 2664 sc->sc_dev.dv_xname, idx, error); 2665 panic("atw_add_rxbuf"); /* XXX */ 2666 } 2667 2668 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 2669 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 2670 2671 ATW_INIT_RXDESC(sc, idx); 2672 2673 return (0); 2674 } 2675 2676 /* 2677 * Release any queued transmit buffers. 2678 */ 2679 void 2680 atw_txdrain(struct atw_softc *sc) 2681 { 2682 struct atw_txsoft *txs; 2683 2684 while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 2685 SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 2686 if (txs->txs_mbuf != NULL) { 2687 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 2688 m_freem(txs->txs_mbuf); 2689 txs->txs_mbuf = NULL; 2690 } 2691 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 2692 } 2693 sc->sc_tx_timer = 0; 2694 } 2695 2696 /* 2697 * atw_stop: [ ifnet interface function ] 2698 * 2699 * Stop transmission on the interface. 2700 */ 2701 void 2702 atw_stop(struct ifnet *ifp, int disable) 2703 { 2704 struct atw_softc *sc = ifp->if_softc; 2705 struct ieee80211com *ic = &sc->sc_ic; 2706 2707 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2708 2709 /* Disable interrupts. */ 2710 ATW_WRITE(sc, ATW_IER, 0); 2711 2712 /* Stop the transmit and receive processes. */ 2713 sc->sc_opmode = 0; 2714 ATW_WRITE(sc, ATW_NAR, 0); 2715 DELAY(atw_nar_delay); 2716 ATW_WRITE(sc, ATW_TDBD, 0); 2717 ATW_WRITE(sc, ATW_TDBP, 0); 2718 ATW_WRITE(sc, ATW_RDB, 0); 2719 2720 atw_txdrain(sc); 2721 2722 if (disable) { 2723 atw_rxdrain(sc); 2724 atw_disable(sc); 2725 } 2726 2727 /* 2728 * Mark the interface down and cancel the watchdog timer. 2729 */ 2730 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2731 ifp->if_timer = 0; 2732 2733 if (!disable) 2734 atw_reset(sc); 2735 } 2736 2737 /* 2738 * atw_rxdrain: 2739 * 2740 * Drain the receive queue. 2741 */ 2742 void 2743 atw_rxdrain(struct atw_softc *sc) 2744 { 2745 struct atw_rxsoft *rxs; 2746 int i; 2747 2748 for (i = 0; i < ATW_NRXDESC; i++) { 2749 rxs = &sc->sc_rxsoft[i]; 2750 if (rxs->rxs_mbuf == NULL) 2751 continue; 2752 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2753 m_freem(rxs->rxs_mbuf); 2754 rxs->rxs_mbuf = NULL; 2755 } 2756 } 2757 2758 /* 2759 * atw_detach: 2760 * 2761 * Detach an ADM8211 interface. 2762 */ 2763 int 2764 atw_detach(struct atw_softc *sc) 2765 { 2766 struct ifnet *ifp = &sc->sc_ic.ic_if; 2767 struct atw_rxsoft *rxs; 2768 struct atw_txsoft *txs; 2769 int i; 2770 2771 /* 2772 * Succeed now if there isn't any work to do. 2773 */ 2774 if ((sc->sc_flags & ATWF_ATTACHED) == 0) 2775 return (0); 2776 2777 ieee80211_ifdetach(ifp); 2778 if_detach(ifp); 2779 2780 for (i = 0; i < ATW_NRXDESC; i++) { 2781 rxs = &sc->sc_rxsoft[i]; 2782 if (rxs->rxs_mbuf != NULL) { 2783 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 2784 m_freem(rxs->rxs_mbuf); 2785 rxs->rxs_mbuf = NULL; 2786 } 2787 bus_dmamap_destroy(sc->sc_dmat, rxs->rxs_dmamap); 2788 } 2789 for (i = 0; i < ATW_TXQUEUELEN; i++) { 2790 txs = &sc->sc_txsoft[i]; 2791 if (txs->txs_mbuf != NULL) { 2792 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 2793 m_freem(txs->txs_mbuf); 2794 txs->txs_mbuf = NULL; 2795 } 2796 bus_dmamap_destroy(sc->sc_dmat, txs->txs_dmamap); 2797 } 2798 bus_dmamap_unload(sc->sc_dmat, sc->sc_cddmamap); 2799 bus_dmamap_destroy(sc->sc_dmat, sc->sc_cddmamap); 2800 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->sc_control_data, 2801 sizeof(struct atw_control_data)); 2802 bus_dmamem_free(sc->sc_dmat, &sc->sc_cdseg, sc->sc_cdnseg); 2803 2804 shutdownhook_disestablish(sc->sc_sdhook); 2805 powerhook_disestablish(sc->sc_powerhook); 2806 2807 if (sc->sc_srom) 2808 free(sc->sc_srom, M_DEVBUF); 2809 2810 return (0); 2811 } 2812 2813 /* atw_shutdown: make sure the interface is stopped at reboot time. */ 2814 void 2815 atw_shutdown(void *arg) 2816 { 2817 struct atw_softc *sc = arg; 2818 2819 atw_stop(&sc->sc_ic.ic_if, 1); 2820 } 2821 2822 int 2823 atw_intr(void *arg) 2824 { 2825 struct atw_softc *sc = arg; 2826 struct ifnet *ifp = &sc->sc_ic.ic_if; 2827 u_int32_t status, rxstatus, txstatus, linkstatus; 2828 int handled = 0, txthresh; 2829 2830 #ifdef DEBUG 2831 if (ATW_IS_ENABLED(sc) == 0) 2832 panic("%s: atw_intr: not enabled", sc->sc_dev.dv_xname); 2833 #endif 2834 2835 /* 2836 * If the interface isn't running, the interrupt couldn't 2837 * possibly have come from us. 2838 */ 2839 if ((ifp->if_flags & IFF_RUNNING) == 0 || 2840 (sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 2841 return (0); 2842 2843 for (;;) { 2844 status = ATW_READ(sc, ATW_STSR); 2845 2846 if (status) 2847 ATW_WRITE(sc, ATW_STSR, status); 2848 2849 #ifdef ATW_DEBUG 2850 #define PRINTINTR(flag) do { \ 2851 if ((status & flag) != 0) { \ 2852 printf("%s" #flag, delim); \ 2853 delim = ","; \ 2854 } \ 2855 } while (0) 2856 2857 if (atw_debug > 1 && status) { 2858 const char *delim = "<"; 2859 2860 printf("%s: reg[STSR] = %x", 2861 sc->sc_dev.dv_xname, status); 2862 2863 PRINTINTR(ATW_INTR_FBE); 2864 PRINTINTR(ATW_INTR_LINKOFF); 2865 PRINTINTR(ATW_INTR_LINKON); 2866 PRINTINTR(ATW_INTR_RCI); 2867 PRINTINTR(ATW_INTR_RDU); 2868 PRINTINTR(ATW_INTR_REIS); 2869 PRINTINTR(ATW_INTR_RPS); 2870 PRINTINTR(ATW_INTR_TCI); 2871 PRINTINTR(ATW_INTR_TDU); 2872 PRINTINTR(ATW_INTR_TLT); 2873 PRINTINTR(ATW_INTR_TPS); 2874 PRINTINTR(ATW_INTR_TRT); 2875 PRINTINTR(ATW_INTR_TUF); 2876 PRINTINTR(ATW_INTR_BCNTC); 2877 PRINTINTR(ATW_INTR_ATIME); 2878 PRINTINTR(ATW_INTR_TBTT); 2879 PRINTINTR(ATW_INTR_TSCZ); 2880 PRINTINTR(ATW_INTR_TSFTF); 2881 printf(">\n"); 2882 } 2883 #undef PRINTINTR 2884 #endif /* ATW_DEBUG */ 2885 2886 if ((status & sc->sc_inten) == 0) 2887 break; 2888 2889 handled = 1; 2890 2891 rxstatus = status & sc->sc_rxint_mask; 2892 txstatus = status & sc->sc_txint_mask; 2893 linkstatus = status & sc->sc_linkint_mask; 2894 2895 if (linkstatus) { 2896 atw_linkintr(sc, linkstatus); 2897 } 2898 2899 if (rxstatus) { 2900 /* Grab any new packets. */ 2901 atw_rxintr(sc); 2902 2903 if (rxstatus & ATW_INTR_RDU) { 2904 printf("%s: receive ring overrun\n", 2905 sc->sc_dev.dv_xname); 2906 /* Get the receive process going again. */ 2907 ATW_WRITE(sc, ATW_RDR, 0x1); 2908 break; 2909 } 2910 } 2911 2912 if (txstatus) { 2913 /* Sweep up transmit descriptors. */ 2914 atw_txintr(sc); 2915 2916 if (txstatus & ATW_INTR_TLT) 2917 DPRINTF(sc, ("%s: tx lifetime exceeded\n", 2918 sc->sc_dev.dv_xname)); 2919 2920 if (txstatus & ATW_INTR_TRT) 2921 DPRINTF(sc, ("%s: tx retry limit exceeded\n", 2922 sc->sc_dev.dv_xname)); 2923 2924 /* If Tx under-run, increase our transmit threshold 2925 * if another is available. 2926 */ 2927 txthresh = sc->sc_txthresh + 1; 2928 if ((txstatus & ATW_INTR_TUF) && 2929 sc->sc_txth[txthresh].txth_name != NULL) { 2930 /* Idle the transmit process. */ 2931 atw_idle(sc, ATW_NAR_ST); 2932 2933 sc->sc_txthresh = txthresh; 2934 sc->sc_opmode &= ~(ATW_NAR_TR_MASK|ATW_NAR_SF); 2935 sc->sc_opmode |= 2936 sc->sc_txth[txthresh].txth_opmode; 2937 printf("%s: transmit underrun; new " 2938 "threshold: %s\n", sc->sc_dev.dv_xname, 2939 sc->sc_txth[txthresh].txth_name); 2940 2941 /* Set the new threshold and restart 2942 * the transmit process. 2943 */ 2944 ATW_WRITE(sc, ATW_NAR, sc->sc_opmode); 2945 DELAY(atw_nar_delay); 2946 ATW_WRITE(sc, ATW_RDR, 0x1); 2947 /* XXX Log every Nth underrun from 2948 * XXX now on? 2949 */ 2950 } 2951 } 2952 2953 if (status & (ATW_INTR_TPS|ATW_INTR_RPS)) { 2954 if (status & ATW_INTR_TPS) 2955 printf("%s: transmit process stopped\n", 2956 sc->sc_dev.dv_xname); 2957 if (status & ATW_INTR_RPS) 2958 printf("%s: receive process stopped\n", 2959 sc->sc_dev.dv_xname); 2960 (void)atw_init(ifp); 2961 break; 2962 } 2963 2964 if (status & ATW_INTR_FBE) { 2965 printf("%s: fatal bus error\n", sc->sc_dev.dv_xname); 2966 (void)atw_init(ifp); 2967 break; 2968 } 2969 2970 /* 2971 * Not handled: 2972 * 2973 * Transmit buffer unavailable -- normal 2974 * condition, nothing to do, really. 2975 * 2976 * Early receive interrupt -- not available on 2977 * all chips, we just use RI. We also only 2978 * use single-segment receive DMA, so this 2979 * is mostly useless. 2980 * 2981 * TBD others 2982 */ 2983 } 2984 2985 /* Try to get more packets going. */ 2986 atw_start(ifp); 2987 2988 return (handled); 2989 } 2990 2991 /* 2992 * atw_idle: 2993 * 2994 * Cause the transmit and/or receive processes to go idle. 2995 * 2996 * XXX It seems that the ADM8211 will not signal the end of the Rx/Tx 2997 * process in STSR if I clear SR or ST after the process has already 2998 * ceased. Fair enough. But the Rx process status bits in ATW_TEST0 2999 * do not seem to be too reliable. Perhaps I have the sense of the 3000 * Rx bits switched with the Tx bits? 3001 */ 3002 void 3003 atw_idle(struct atw_softc *sc, u_int32_t bits) 3004 { 3005 u_int32_t ackmask = 0, opmode, stsr, test0; 3006 int i, s; 3007 3008 s = splnet(); 3009 3010 opmode = sc->sc_opmode & ~bits; 3011 3012 if (bits & ATW_NAR_SR) 3013 ackmask |= ATW_INTR_RPS; 3014 3015 if (bits & ATW_NAR_ST) { 3016 ackmask |= ATW_INTR_TPS; 3017 /* set ATW_NAR_HF to flush TX FIFO. */ 3018 opmode |= ATW_NAR_HF; 3019 } 3020 3021 ATW_WRITE(sc, ATW_NAR, opmode); 3022 DELAY(atw_nar_delay); 3023 3024 for (i = 0; i < 1000; i++) { 3025 stsr = ATW_READ(sc, ATW_STSR); 3026 if ((stsr & ackmask) == ackmask) 3027 break; 3028 DELAY(10); 3029 } 3030 3031 ATW_WRITE(sc, ATW_STSR, stsr & ackmask); 3032 3033 if ((stsr & ackmask) == ackmask) 3034 goto out; 3035 3036 test0 = ATW_READ(sc, ATW_TEST0); 3037 3038 if ((bits & ATW_NAR_ST) != 0 && (stsr & ATW_INTR_TPS) == 0 && 3039 (test0 & ATW_TEST0_TS_MASK) != ATW_TEST0_TS_STOPPED) { 3040 printf("%s: transmit process not idle [%s]\n", 3041 sc->sc_dev.dv_xname, 3042 atw_tx_state[MASK_AND_RSHIFT(test0, ATW_TEST0_TS_MASK)]); 3043 printf("%s: bits %08x test0 %08x stsr %08x\n", 3044 sc->sc_dev.dv_xname, bits, test0, stsr); 3045 } 3046 3047 if ((bits & ATW_NAR_SR) != 0 && (stsr & ATW_INTR_RPS) == 0 && 3048 (test0 & ATW_TEST0_RS_MASK) != ATW_TEST0_RS_STOPPED) { 3049 DPRINTF2(sc, ("%s: receive process not idle [%s]\n", 3050 sc->sc_dev.dv_xname, 3051 atw_rx_state[MASK_AND_RSHIFT(test0, ATW_TEST0_RS_MASK)])); 3052 DPRINTF2(sc, ("%s: bits %08x test0 %08x stsr %08x\n", 3053 sc->sc_dev.dv_xname, bits, test0, stsr)); 3054 } 3055 out: 3056 if ((bits & ATW_NAR_ST) != 0) 3057 atw_txdrain(sc); 3058 splx(s); 3059 return; 3060 } 3061 3062 /* 3063 * atw_linkintr: 3064 * 3065 * Helper; handle link-status interrupts. 3066 */ 3067 void 3068 atw_linkintr(struct atw_softc *sc, u_int32_t linkstatus) 3069 { 3070 struct ieee80211com *ic = &sc->sc_ic; 3071 3072 if (ic->ic_state != IEEE80211_S_RUN) 3073 return; 3074 3075 if (linkstatus & ATW_INTR_LINKON) { 3076 DPRINTF(sc, ("%s: link on\n", sc->sc_dev.dv_xname)); 3077 sc->sc_rescan_timer = 0; 3078 } else if (linkstatus & ATW_INTR_LINKOFF) { 3079 DPRINTF(sc, ("%s: link off\n", sc->sc_dev.dv_xname)); 3080 if (ic->ic_opmode != IEEE80211_M_STA) 3081 return; 3082 sc->sc_rescan_timer = 3; 3083 ic->ic_if.if_timer = 1; 3084 } 3085 } 3086 3087 static __inline int 3088 atw_hw_decrypted(struct atw_softc *sc, struct ieee80211_frame *wh) 3089 { 3090 if ((sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) == 0) 3091 return 0; 3092 if ((wh->i_fc[1] & IEEE80211_FC1_WEP) == 0) 3093 return 0; 3094 return (sc->sc_wepctl & ATW_WEPCTL_WEPRXBYP) == 0; 3095 } 3096 3097 /* 3098 * atw_rxintr: 3099 * 3100 * Helper; handle receive interrupts. 3101 */ 3102 void 3103 atw_rxintr(struct atw_softc *sc) 3104 { 3105 static int rate_tbl[] = {2, 4, 11, 22, 44}; 3106 struct ieee80211com *ic = &sc->sc_ic; 3107 struct ieee80211_node *ni; 3108 struct ieee80211_frame *wh; 3109 struct ifnet *ifp = &ic->ic_if; 3110 struct atw_rxsoft *rxs; 3111 struct mbuf *m; 3112 u_int32_t rxstat; 3113 int i, len, rate, rate0; 3114 u_int32_t rssi, rssi0; 3115 3116 for (i = sc->sc_rxptr;; i = ATW_NEXTRX(i)) { 3117 rxs = &sc->sc_rxsoft[i]; 3118 3119 ATW_CDRXSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 3120 3121 rxstat = le32toh(sc->sc_rxdescs[i].ar_stat); 3122 rssi0 = le32toh(sc->sc_rxdescs[i].ar_rssi); 3123 rate0 = MASK_AND_RSHIFT(rxstat, ATW_RXSTAT_RXDR_MASK); 3124 3125 if (rxstat & ATW_RXSTAT_OWN) 3126 break; /* We have processed all receive buffers. */ 3127 3128 DPRINTF3(sc, 3129 ("%s: rx stat %08x rssi0 %08x buf1 %08x buf2 %08x\n", 3130 sc->sc_dev.dv_xname, 3131 rxstat, rssi0, 3132 le32toh(sc->sc_rxdescs[i].ar_buf1), 3133 le32toh(sc->sc_rxdescs[i].ar_buf2))); 3134 3135 /* 3136 * Make sure the packet fits in one buffer. This should 3137 * always be the case. 3138 */ 3139 if ((rxstat & (ATW_RXSTAT_FS|ATW_RXSTAT_LS)) != 3140 (ATW_RXSTAT_FS|ATW_RXSTAT_LS)) { 3141 printf("%s: incoming packet spilled, resetting\n", 3142 sc->sc_dev.dv_xname); 3143 (void)atw_init(ifp); 3144 return; 3145 } 3146 3147 /* 3148 * If an error occurred, update stats, clear the status 3149 * word, and leave the packet buffer in place. It will 3150 * simply be reused the next time the ring comes around. 3151 * If 802.1Q VLAN MTU is enabled, ignore the Frame Too Long 3152 * error. 3153 */ 3154 3155 if ((rxstat & ATW_RXSTAT_ES) != 0 && 3156 ((sc->sc_ic.ic_ec.ec_capenable & ETHERCAP_VLAN_MTU) == 0 || 3157 (rxstat & (ATW_RXSTAT_DE | ATW_RXSTAT_SFDE | 3158 ATW_RXSTAT_SIGE | ATW_RXSTAT_CRC16E | 3159 ATW_RXSTAT_RXTOE | ATW_RXSTAT_CRC32E | 3160 ATW_RXSTAT_ICVE)) != 0)) { 3161 #define PRINTERR(bit, str) \ 3162 if (rxstat & (bit)) \ 3163 printf("%s: receive error: %s\n", \ 3164 sc->sc_dev.dv_xname, str) 3165 ifp->if_ierrors++; 3166 PRINTERR(ATW_RXSTAT_DE, "descriptor error"); 3167 PRINTERR(ATW_RXSTAT_SFDE, "PLCP SFD error"); 3168 PRINTERR(ATW_RXSTAT_SIGE, "PLCP signal error"); 3169 PRINTERR(ATW_RXSTAT_CRC16E, "PLCP CRC16 error"); 3170 PRINTERR(ATW_RXSTAT_RXTOE, "time-out"); 3171 PRINTERR(ATW_RXSTAT_CRC32E, "FCS error"); 3172 PRINTERR(ATW_RXSTAT_ICVE, "WEP ICV error"); 3173 #undef PRINTERR 3174 ATW_INIT_RXDESC(sc, i); 3175 continue; 3176 } 3177 3178 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 3179 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 3180 3181 /* 3182 * No errors; receive the packet. Note the ADM8211 3183 * includes the CRC in promiscuous mode. 3184 */ 3185 len = MASK_AND_RSHIFT(rxstat, ATW_RXSTAT_FL_MASK); 3186 3187 /* 3188 * Allocate a new mbuf cluster. If that fails, we are 3189 * out of memory, and must drop the packet and recycle 3190 * the buffer that's already attached to this descriptor. 3191 */ 3192 m = rxs->rxs_mbuf; 3193 if (atw_add_rxbuf(sc, i) != 0) { 3194 ifp->if_ierrors++; 3195 ATW_INIT_RXDESC(sc, i); 3196 bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, 3197 rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 3198 continue; 3199 } 3200 3201 ifp->if_ipackets++; 3202 if (sc->sc_opmode & ATW_NAR_PR) 3203 m->m_flags |= M_HASFCS; 3204 m->m_pkthdr.rcvif = ifp; 3205 m->m_pkthdr.len = m->m_len = MIN(m->m_ext.ext_size, len); 3206 3207 if (rate0 >= sizeof(rate_tbl) / sizeof(rate_tbl[0])) 3208 rate = 0; 3209 else 3210 rate = rate_tbl[rate0]; 3211 3212 /* The RSSI comes straight from a register in the 3213 * baseband processor. I know that for the RF3000, 3214 * the RSSI register also contains the antenna-selection 3215 * bits. Mask those off. 3216 * 3217 * TBD Treat other basebands. 3218 */ 3219 if (sc->sc_bbptype == ATW_BBPTYPE_RFMD) 3220 rssi = rssi0 & RF3000_RSSI_MASK; 3221 else 3222 rssi = rssi0; 3223 3224 #if NBPFILTER > 0 3225 /* Pass this up to any BPF listeners. */ 3226 if (sc->sc_radiobpf != NULL) { 3227 struct atw_rx_radiotap_header *tap = &sc->sc_rxtap; 3228 3229 tap->ar_rate = rate; 3230 tap->ar_chan_freq = ic->ic_bss->ni_chan->ic_freq; 3231 tap->ar_chan_flags = ic->ic_bss->ni_chan->ic_flags; 3232 3233 /* TBD verify units are dB */ 3234 tap->ar_antsignal = (int)rssi; 3235 /* TBD tap->ar_flags */ 3236 3237 bpf_mtap2(sc->sc_radiobpf, (caddr_t)tap, 3238 tap->ar_ihdr.it_len, m); 3239 } 3240 #endif /* NPBFILTER > 0 */ 3241 3242 wh = mtod(m, struct ieee80211_frame *); 3243 ni = ieee80211_find_rxnode(ic, wh); 3244 if (atw_hw_decrypted(sc, wh)) 3245 wh->i_fc[1] &= ~IEEE80211_FC1_WEP; 3246 ieee80211_input(ifp, m, ni, (int)rssi, 0); 3247 /* 3248 * The frame may have caused the node to be marked for 3249 * reclamation (e.g. in response to a DEAUTH message) 3250 * so use free_node here instead of unref_node. 3251 */ 3252 if (ni == ic->ic_bss) 3253 ieee80211_unref_node(&ni); 3254 else 3255 ieee80211_free_node(ic, ni); 3256 } 3257 3258 /* Update the receive pointer. */ 3259 sc->sc_rxptr = i; 3260 } 3261 3262 /* 3263 * atw_txintr: 3264 * 3265 * Helper; handle transmit interrupts. 3266 */ 3267 void 3268 atw_txintr(struct atw_softc *sc) 3269 { 3270 #define TXSTAT_ERRMASK (ATW_TXSTAT_TUF | ATW_TXSTAT_TLT | ATW_TXSTAT_TRT | \ 3271 ATW_TXSTAT_TRO | ATW_TXSTAT_SOFBR) 3272 #define TXSTAT_FMT "\20\31ATW_TXSTAT_SOFBR\32ATW_TXSTAT_TRO\33ATW_TXSTAT_TUF" \ 3273 "\34ATW_TXSTAT_TRT\35ATW_TXSTAT_TLT" 3274 3275 static char txstat_buf[sizeof("ffffffff<>" TXSTAT_FMT)]; 3276 struct ifnet *ifp = &sc->sc_ic.ic_if; 3277 struct atw_txsoft *txs; 3278 u_int32_t txstat; 3279 3280 DPRINTF3(sc, ("%s: atw_txintr: sc_flags 0x%08x\n", 3281 sc->sc_dev.dv_xname, sc->sc_flags)); 3282 3283 ifp->if_flags &= ~IFF_OACTIVE; 3284 3285 /* 3286 * Go through our Tx list and free mbufs for those 3287 * frames that have been transmitted. 3288 */ 3289 while ((txs = SIMPLEQ_FIRST(&sc->sc_txdirtyq)) != NULL) { 3290 ATW_CDTXSYNC(sc, txs->txs_lastdesc, 1, 3291 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 3292 3293 #ifdef ATW_DEBUG 3294 if ((ifp->if_flags & IFF_DEBUG) != 0 && atw_debug > 2) { 3295 int i; 3296 printf(" txsoft %p transmit chain:\n", txs); 3297 ATW_CDTXSYNC(sc, txs->txs_firstdesc, 3298 txs->txs_ndescs - 1, 3299 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 3300 for (i = txs->txs_firstdesc;; i = ATW_NEXTTX(i)) { 3301 printf(" descriptor %d:\n", i); 3302 printf(" at_status: 0x%08x\n", 3303 le32toh(sc->sc_txdescs[i].at_stat)); 3304 printf(" at_flags: 0x%08x\n", 3305 le32toh(sc->sc_txdescs[i].at_flags)); 3306 printf(" at_buf1: 0x%08x\n", 3307 le32toh(sc->sc_txdescs[i].at_buf1)); 3308 printf(" at_buf2: 0x%08x\n", 3309 le32toh(sc->sc_txdescs[i].at_buf2)); 3310 if (i == txs->txs_lastdesc) 3311 break; 3312 } 3313 } 3314 #endif 3315 3316 txstat = le32toh(sc->sc_txdescs[txs->txs_lastdesc].at_stat); 3317 if (txstat & ATW_TXSTAT_OWN) 3318 break; 3319 3320 SIMPLEQ_REMOVE_HEAD(&sc->sc_txdirtyq, txs_q); 3321 3322 sc->sc_txfree += txs->txs_ndescs; 3323 3324 bus_dmamap_sync(sc->sc_dmat, txs->txs_dmamap, 3325 0, txs->txs_dmamap->dm_mapsize, 3326 BUS_DMASYNC_POSTWRITE); 3327 bus_dmamap_unload(sc->sc_dmat, txs->txs_dmamap); 3328 m_freem(txs->txs_mbuf); 3329 txs->txs_mbuf = NULL; 3330 3331 SIMPLEQ_INSERT_TAIL(&sc->sc_txfreeq, txs, txs_q); 3332 3333 if ((ifp->if_flags & IFF_DEBUG) != 0 && 3334 (txstat & TXSTAT_ERRMASK) != 0) { 3335 bitmask_snprintf(txstat & TXSTAT_ERRMASK, TXSTAT_FMT, 3336 txstat_buf, sizeof(txstat_buf)); 3337 printf("%s: txstat %s %d\n", sc->sc_dev.dv_xname, 3338 txstat_buf, 3339 MASK_AND_RSHIFT(txstat, ATW_TXSTAT_ARC_MASK)); 3340 } 3341 3342 /* 3343 * Check for errors and collisions. 3344 */ 3345 if (txstat & ATW_TXSTAT_TUF) 3346 sc->sc_stats.ts_tx_tuf++; 3347 if (txstat & ATW_TXSTAT_TLT) 3348 sc->sc_stats.ts_tx_tlt++; 3349 if (txstat & ATW_TXSTAT_TRT) 3350 sc->sc_stats.ts_tx_trt++; 3351 if (txstat & ATW_TXSTAT_TRO) 3352 sc->sc_stats.ts_tx_tro++; 3353 if (txstat & ATW_TXSTAT_SOFBR) { 3354 sc->sc_stats.ts_tx_sofbr++; 3355 } 3356 3357 if ((txstat & ATW_TXSTAT_ES) == 0) 3358 ifp->if_collisions += 3359 MASK_AND_RSHIFT(txstat, ATW_TXSTAT_ARC_MASK); 3360 else 3361 ifp->if_oerrors++; 3362 3363 ifp->if_opackets++; 3364 } 3365 3366 /* 3367 * If there are no more pending transmissions, cancel the watchdog 3368 * timer. 3369 */ 3370 if (txs == NULL) 3371 sc->sc_tx_timer = 0; 3372 #undef TXSTAT_ERRMASK 3373 #undef TXSTAT_FMT 3374 } 3375 3376 /* 3377 * atw_watchdog: [ifnet interface function] 3378 * 3379 * Watchdog timer handler. 3380 */ 3381 void 3382 atw_watchdog(struct ifnet *ifp) 3383 { 3384 struct atw_softc *sc = ifp->if_softc; 3385 struct ieee80211com *ic = &sc->sc_ic; 3386 3387 ifp->if_timer = 0; 3388 if (ATW_IS_ENABLED(sc) == 0) 3389 return; 3390 3391 if (sc->sc_rescan_timer) { 3392 if (--sc->sc_rescan_timer == 0) 3393 (void)ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 3394 } 3395 if (sc->sc_tx_timer) { 3396 if (--sc->sc_tx_timer == 0 && 3397 !SIMPLEQ_EMPTY(&sc->sc_txdirtyq)) { 3398 printf("%s: transmit timeout\n", ifp->if_xname); 3399 ifp->if_oerrors++; 3400 (void)atw_init(ifp); 3401 atw_start(ifp); 3402 } 3403 } 3404 if (sc->sc_tx_timer != 0 || sc->sc_rescan_timer != 0) 3405 ifp->if_timer = 1; 3406 ieee80211_watchdog(ifp); 3407 } 3408 3409 /* Compute the 802.11 Duration field and the PLCP Length fields for 3410 * a len-byte frame (HEADER + PAYLOAD + FCS) sent at rate * 500Kbps. 3411 * Write the fields to the ADM8211 Tx header, frm. 3412 * 3413 * TBD use the fragmentation threshold to find the right duration for 3414 * the first & last fragments. 3415 * 3416 * TBD make certain of the duration fields applied by the ADM8211 to each 3417 * fragment. I think that the ADM8211 knows how to subtract the CTS 3418 * duration when ATW_HDRCTL_RTSCTS is clear; that is why I add it regardless. 3419 * I also think that the ADM8211 does *some* arithmetic for us, because 3420 * otherwise I think we would have to set a first duration for CTS/first 3421 * fragment, a second duration for fragments between the first and the 3422 * last, and a third duration for the last fragment. 3423 * 3424 * TBD make certain that duration fields reflect addition of FCS/WEP 3425 * and correct duration arithmetic as necessary. 3426 */ 3427 static void 3428 atw_frame_setdurs(struct atw_softc *sc, struct atw_frame *frm, int rate, 3429 int len) 3430 { 3431 int remainder; 3432 3433 /* deal also with encrypted fragments */ 3434 if (frm->atw_hdrctl & htole16(ATW_HDRCTL_WEP)) { 3435 DPRINTF2(sc, ("%s: atw_frame_setdurs len += 8\n", 3436 sc->sc_dev.dv_xname)); 3437 len += IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + 3438 IEEE80211_WEP_CRCLEN; 3439 } 3440 3441 /* 802.11 Duration Field for CTS/Data/ACK sequence minus FCS & WEP 3442 * duration (XXX added by MAC?). 3443 */ 3444 frm->atw_head_dur = (16 * (len - IEEE80211_CRC_LEN)) / rate; 3445 remainder = (16 * (len - IEEE80211_CRC_LEN)) % rate; 3446 3447 if (rate <= 4) 3448 /* 1-2Mbps WLAN: send ACK/CTS at 1Mbps */ 3449 frm->atw_head_dur += 3 * (IEEE80211_DUR_DS_SIFS + 3450 IEEE80211_DUR_DS_SHORT_PREAMBLE + 3451 IEEE80211_DUR_DS_FAST_PLCPHDR) + 3452 IEEE80211_DUR_DS_SLOW_CTS + IEEE80211_DUR_DS_SLOW_ACK; 3453 else 3454 /* 5-11Mbps WLAN: send ACK/CTS at 2Mbps */ 3455 frm->atw_head_dur += 3 * (IEEE80211_DUR_DS_SIFS + 3456 IEEE80211_DUR_DS_SHORT_PREAMBLE + 3457 IEEE80211_DUR_DS_FAST_PLCPHDR) + 3458 IEEE80211_DUR_DS_FAST_CTS + IEEE80211_DUR_DS_FAST_ACK; 3459 3460 /* lengthen duration if long preamble */ 3461 if ((sc->sc_flags & ATWF_SHORT_PREAMBLE) == 0) 3462 frm->atw_head_dur += 3463 3 * (IEEE80211_DUR_DS_LONG_PREAMBLE - 3464 IEEE80211_DUR_DS_SHORT_PREAMBLE) + 3465 3 * (IEEE80211_DUR_DS_SLOW_PLCPHDR - 3466 IEEE80211_DUR_DS_FAST_PLCPHDR); 3467 3468 if (remainder != 0) 3469 frm->atw_head_dur++; 3470 3471 if ((atw_voodoo & VOODOO_DUR_2_4_SPECIALCASE) && 3472 (rate == 2 || rate == 4)) { 3473 /* derived from Linux: how could this be right? */ 3474 frm->atw_head_plcplen = frm->atw_head_dur; 3475 } else { 3476 frm->atw_head_plcplen = (16 * len) / rate; 3477 remainder = (80 * len) % (rate * 5); 3478 3479 if (remainder != 0) { 3480 frm->atw_head_plcplen++; 3481 3482 /* XXX magic */ 3483 if ((atw_voodoo & VOODOO_DUR_11_ROUNDING) && 3484 rate == 22 && remainder <= 30) 3485 frm->atw_head_plcplen |= 0x8000; 3486 } 3487 } 3488 frm->atw_tail_plcplen = frm->atw_head_plcplen = 3489 htole16(frm->atw_head_plcplen); 3490 frm->atw_tail_dur = frm->atw_head_dur = htole16(frm->atw_head_dur); 3491 } 3492 3493 #ifdef ATW_DEBUG 3494 static void 3495 atw_dump_pkt(struct ifnet *ifp, struct mbuf *m0) 3496 { 3497 struct atw_softc *sc = ifp->if_softc; 3498 struct mbuf *m; 3499 int i, noctets = 0; 3500 3501 printf("%s: %d-byte packet\n", sc->sc_dev.dv_xname, 3502 m0->m_pkthdr.len); 3503 3504 for (m = m0; m; m = m->m_next) { 3505 if (m->m_len == 0) 3506 continue; 3507 for (i = 0; i < m->m_len; i++) { 3508 printf(" %02x", ((u_int8_t*)m->m_data)[i]); 3509 if (++noctets % 24 == 0) 3510 printf("\n"); 3511 } 3512 } 3513 printf("%s%s: %d bytes emitted\n", 3514 (noctets % 24 != 0) ? "\n" : "", sc->sc_dev.dv_xname, noctets); 3515 } 3516 #endif /* ATW_DEBUG */ 3517 3518 /* 3519 * atw_start: [ifnet interface function] 3520 * 3521 * Start packet transmission on the interface. 3522 */ 3523 void 3524 atw_start(struct ifnet *ifp) 3525 { 3526 struct atw_softc *sc = ifp->if_softc; 3527 struct ieee80211com *ic = &sc->sc_ic; 3528 struct ieee80211_node *ni; 3529 struct ieee80211_frame *wh; 3530 struct atw_frame *hh; 3531 struct mbuf *m0, *m; 3532 struct atw_txsoft *txs, *last_txs; 3533 struct atw_txdesc *txd; 3534 int do_encrypt, rate; 3535 bus_dmamap_t dmamap; 3536 int ctl, error, firsttx, nexttx, lasttx = -1, first, ofree, seg; 3537 3538 DPRINTF2(sc, ("%s: atw_start: sc_flags 0x%08x, if_flags 0x%08x\n", 3539 sc->sc_dev.dv_xname, sc->sc_flags, ifp->if_flags)); 3540 3541 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 3542 return; 3543 3544 /* 3545 * Remember the previous number of free descriptors and 3546 * the first descriptor we'll use. 3547 */ 3548 ofree = sc->sc_txfree; 3549 firsttx = sc->sc_txnext; 3550 3551 DPRINTF2(sc, ("%s: atw_start: txfree %d, txnext %d\n", 3552 sc->sc_dev.dv_xname, ofree, firsttx)); 3553 3554 /* 3555 * Loop through the send queue, setting up transmit descriptors 3556 * until we drain the queue, or use up all available transmit 3557 * descriptors. 3558 */ 3559 while ((txs = SIMPLEQ_FIRST(&sc->sc_txfreeq)) != NULL && 3560 sc->sc_txfree != 0) { 3561 3562 /* 3563 * Grab a packet off the management queue, if it 3564 * is not empty. Otherwise, from the data queue. 3565 */ 3566 IF_DEQUEUE(&ic->ic_mgtq, m0); 3567 if (m0 != NULL) { 3568 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 3569 m0->m_pkthdr.rcvif = NULL; 3570 } else { 3571 /* send no data packets until we are associated */ 3572 if (ic->ic_state != IEEE80211_S_RUN) 3573 break; 3574 IFQ_DEQUEUE(&ifp->if_snd, m0); 3575 if (m0 == NULL) 3576 break; 3577 #if NBPFILTER > 0 3578 if (ifp->if_bpf != NULL) 3579 bpf_mtap(ifp->if_bpf, m0); 3580 #endif /* NBPFILTER > 0 */ 3581 if ((m0 = ieee80211_encap(ifp, m0, &ni)) == NULL) { 3582 ifp->if_oerrors++; 3583 break; 3584 } 3585 } 3586 3587 rate = MAX(ieee80211_get_rate(ic), 2); 3588 3589 #if NBPFILTER > 0 3590 /* 3591 * Pass the packet to any BPF listeners. 3592 */ 3593 if (ic->ic_rawbpf != NULL) 3594 bpf_mtap((caddr_t)ic->ic_rawbpf, m0); 3595 3596 if (sc->sc_radiobpf != NULL) { 3597 struct atw_tx_radiotap_header *tap = &sc->sc_txtap; 3598 3599 tap->at_rate = rate; 3600 tap->at_chan_freq = ic->ic_bss->ni_chan->ic_freq; 3601 tap->at_chan_flags = ic->ic_bss->ni_chan->ic_flags; 3602 3603 /* TBD tap->at_flags */ 3604 3605 bpf_mtap2(sc->sc_radiobpf, (caddr_t)tap, 3606 tap->at_ihdr.it_len, m0); 3607 } 3608 #endif /* NBPFILTER > 0 */ 3609 3610 M_PREPEND(m0, offsetof(struct atw_frame, atw_ihdr), M_DONTWAIT); 3611 3612 if (ni != NULL && ni != ic->ic_bss) 3613 ieee80211_free_node(ic, ni); 3614 3615 if (m0 == NULL) { 3616 ifp->if_oerrors++; 3617 break; 3618 } 3619 3620 /* just to make sure. */ 3621 m0 = m_pullup(m0, sizeof(struct atw_frame)); 3622 3623 if (m0 == NULL) { 3624 ifp->if_oerrors++; 3625 break; 3626 } 3627 3628 hh = mtod(m0, struct atw_frame *); 3629 wh = &hh->atw_ihdr; 3630 3631 do_encrypt = ((wh->i_fc[1] & IEEE80211_FC1_WEP) != 0) ? 1 : 0; 3632 3633 /* Copy everything we need from the 802.11 header: 3634 * Frame Control; address 1, address 3, or addresses 3635 * 3 and 4. NIC fills in BSSID, SA. 3636 */ 3637 if (wh->i_fc[1] & IEEE80211_FC1_DIR_TODS) { 3638 if (wh->i_fc[1] & IEEE80211_FC1_DIR_FROMDS) 3639 panic("%s: illegal WDS frame", 3640 sc->sc_dev.dv_xname); 3641 memcpy(hh->atw_dst, wh->i_addr3, IEEE80211_ADDR_LEN); 3642 } else 3643 memcpy(hh->atw_dst, wh->i_addr1, IEEE80211_ADDR_LEN); 3644 3645 *(u_int16_t*)hh->atw_fc = *(u_int16_t*)wh->i_fc; 3646 3647 /* initialize remaining Tx parameters */ 3648 memset(&hh->u, 0, sizeof(hh->u)); 3649 3650 hh->atw_rate = rate * 5; 3651 /* XXX this could be incorrect if M_FCS. _encap should 3652 * probably strip FCS just in case it sticks around in 3653 * bridged packets. 3654 */ 3655 hh->atw_service = IEEE80211_PLCP_SERVICE; /* XXX guess */ 3656 hh->atw_paylen = htole16(m0->m_pkthdr.len - 3657 sizeof(struct atw_frame)); 3658 3659 hh->atw_fragthr = htole16(ATW_FRAGTHR_FRAGTHR_MASK); 3660 hh->atw_rtylmt = 3; 3661 hh->atw_hdrctl = htole16(ATW_HDRCTL_UNKNOWN1); 3662 if (do_encrypt) { 3663 hh->atw_hdrctl |= htole16(ATW_HDRCTL_WEP); 3664 hh->atw_keyid = ic->ic_wep_txkey; 3665 } 3666 3667 /* TBD 4-addr frames */ 3668 atw_frame_setdurs(sc, hh, rate, 3669 m0->m_pkthdr.len - sizeof(struct atw_frame) + 3670 sizeof(struct ieee80211_frame) + IEEE80211_CRC_LEN); 3671 3672 /* never fragment multicast frames */ 3673 if (IEEE80211_IS_MULTICAST(hh->atw_dst)) { 3674 hh->atw_fragthr = htole16(ATW_FRAGTHR_FRAGTHR_MASK); 3675 } else if (sc->sc_flags & ATWF_RTSCTS) { 3676 hh->atw_hdrctl |= htole16(ATW_HDRCTL_RTSCTS); 3677 } 3678 3679 #ifdef ATW_DEBUG 3680 hh->atw_fragnum = 0; 3681 3682 if ((ifp->if_flags & IFF_DEBUG) != 0 && atw_debug > 2) { 3683 printf("%s: dst = %s, rate = 0x%02x, " 3684 "service = 0x%02x, paylen = 0x%04x\n", 3685 sc->sc_dev.dv_xname, ether_sprintf(hh->atw_dst), 3686 hh->atw_rate, hh->atw_service, hh->atw_paylen); 3687 3688 printf("%s: fc[0] = 0x%02x, fc[1] = 0x%02x, " 3689 "dur1 = 0x%04x, dur2 = 0x%04x, " 3690 "dur3 = 0x%04x, rts_dur = 0x%04x\n", 3691 sc->sc_dev.dv_xname, hh->atw_fc[0], hh->atw_fc[1], 3692 hh->atw_tail_plcplen, hh->atw_head_plcplen, 3693 hh->atw_tail_dur, hh->atw_head_dur); 3694 3695 printf("%s: hdrctl = 0x%04x, fragthr = 0x%04x, " 3696 "fragnum = 0x%02x, rtylmt = 0x%04x\n", 3697 sc->sc_dev.dv_xname, hh->atw_hdrctl, 3698 hh->atw_fragthr, hh->atw_fragnum, hh->atw_rtylmt); 3699 3700 printf("%s: keyid = %d\n", 3701 sc->sc_dev.dv_xname, hh->atw_keyid); 3702 3703 atw_dump_pkt(ifp, m0); 3704 } 3705 #endif /* ATW_DEBUG */ 3706 3707 dmamap = txs->txs_dmamap; 3708 3709 /* 3710 * Load the DMA map. Copy and try (once) again if the packet 3711 * didn't fit in the alloted number of segments. 3712 */ 3713 for (first = 1; 3714 (error = bus_dmamap_load_mbuf(sc->sc_dmat, dmamap, m0, 3715 BUS_DMA_WRITE|BUS_DMA_NOWAIT)) != 0 && first; 3716 first = 0) { 3717 MGETHDR(m, M_DONTWAIT, MT_DATA); 3718 if (m == NULL) { 3719 printf("%s: unable to allocate Tx mbuf\n", 3720 sc->sc_dev.dv_xname); 3721 break; 3722 } 3723 if (m0->m_pkthdr.len > MHLEN) { 3724 MCLGET(m, M_DONTWAIT); 3725 if ((m->m_flags & M_EXT) == 0) { 3726 printf("%s: unable to allocate Tx " 3727 "cluster\n", sc->sc_dev.dv_xname); 3728 m_freem(m); 3729 break; 3730 } 3731 } 3732 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, caddr_t)); 3733 m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; 3734 m_freem(m0); 3735 m0 = m; 3736 m = NULL; 3737 } 3738 if (error != 0) { 3739 printf("%s: unable to load Tx buffer, " 3740 "error = %d\n", sc->sc_dev.dv_xname, error); 3741 m_freem(m0); 3742 break; 3743 } 3744 3745 /* 3746 * Ensure we have enough descriptors free to describe 3747 * the packet. 3748 */ 3749 if (dmamap->dm_nsegs > sc->sc_txfree) { 3750 /* 3751 * Not enough free descriptors to transmit 3752 * this packet. Unload the DMA map and 3753 * drop the packet. Notify the upper layer 3754 * that there are no more slots left. 3755 * 3756 * XXX We could allocate an mbuf and copy, but 3757 * XXX it is worth it? 3758 */ 3759 ifp->if_flags |= IFF_OACTIVE; 3760 bus_dmamap_unload(sc->sc_dmat, dmamap); 3761 m_freem(m0); 3762 break; 3763 } 3764 3765 /* 3766 * WE ARE NOW COMMITTED TO TRANSMITTING THE PACKET. 3767 */ 3768 3769 /* Sync the DMA map. */ 3770 bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize, 3771 BUS_DMASYNC_PREWRITE); 3772 3773 /* XXX arbitrary retry limit; 8 because I have seen it in 3774 * use already and maybe 0 means "no tries" ! 3775 */ 3776 ctl = htole32(LSHIFT(8, ATW_TXCTL_TL_MASK)); 3777 3778 DPRINTF2(sc, ("%s: TXDR <- max(10, %d)\n", 3779 sc->sc_dev.dv_xname, rate * 5)); 3780 ctl |= htole32(LSHIFT(MAX(10, rate * 5), ATW_TXCTL_TXDR_MASK)); 3781 3782 /* 3783 * Initialize the transmit descriptors. 3784 */ 3785 for (nexttx = sc->sc_txnext, seg = 0; 3786 seg < dmamap->dm_nsegs; 3787 seg++, nexttx = ATW_NEXTTX(nexttx)) { 3788 /* 3789 * If this is the first descriptor we're 3790 * enqueueing, don't set the OWN bit just 3791 * yet. That could cause a race condition. 3792 * We'll do it below. 3793 */ 3794 txd = &sc->sc_txdescs[nexttx]; 3795 txd->at_ctl = ctl | 3796 ((nexttx == firsttx) ? 0 : htole32(ATW_TXCTL_OWN)); 3797 3798 txd->at_buf1 = htole32(dmamap->dm_segs[seg].ds_addr); 3799 txd->at_flags = 3800 htole32(LSHIFT(dmamap->dm_segs[seg].ds_len, 3801 ATW_TXFLAG_TBS1_MASK)) | 3802 ((nexttx == (ATW_NTXDESC - 1)) 3803 ? htole32(ATW_TXFLAG_TER) : 0); 3804 lasttx = nexttx; 3805 } 3806 3807 IASSERT(lasttx != -1, ("bad lastx")); 3808 /* Set `first segment' and `last segment' appropriately. */ 3809 sc->sc_txdescs[sc->sc_txnext].at_flags |= 3810 htole32(ATW_TXFLAG_FS); 3811 sc->sc_txdescs[lasttx].at_flags |= htole32(ATW_TXFLAG_LS); 3812 3813 #ifdef ATW_DEBUG 3814 if ((ifp->if_flags & IFF_DEBUG) != 0 && atw_debug > 2) { 3815 printf(" txsoft %p transmit chain:\n", txs); 3816 for (seg = sc->sc_txnext;; seg = ATW_NEXTTX(seg)) { 3817 printf(" descriptor %d:\n", seg); 3818 printf(" at_ctl: 0x%08x\n", 3819 le32toh(sc->sc_txdescs[seg].at_ctl)); 3820 printf(" at_flags: 0x%08x\n", 3821 le32toh(sc->sc_txdescs[seg].at_flags)); 3822 printf(" at_buf1: 0x%08x\n", 3823 le32toh(sc->sc_txdescs[seg].at_buf1)); 3824 printf(" at_buf2: 0x%08x\n", 3825 le32toh(sc->sc_txdescs[seg].at_buf2)); 3826 if (seg == lasttx) 3827 break; 3828 } 3829 } 3830 #endif 3831 3832 /* Sync the descriptors we're using. */ 3833 ATW_CDTXSYNC(sc, sc->sc_txnext, dmamap->dm_nsegs, 3834 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 3835 3836 /* 3837 * Store a pointer to the packet so we can free it later, 3838 * and remember what txdirty will be once the packet is 3839 * done. 3840 */ 3841 txs->txs_mbuf = m0; 3842 txs->txs_firstdesc = sc->sc_txnext; 3843 txs->txs_lastdesc = lasttx; 3844 txs->txs_ndescs = dmamap->dm_nsegs; 3845 3846 /* Advance the tx pointer. */ 3847 sc->sc_txfree -= dmamap->dm_nsegs; 3848 sc->sc_txnext = nexttx; 3849 3850 SIMPLEQ_REMOVE_HEAD(&sc->sc_txfreeq, txs_q); 3851 SIMPLEQ_INSERT_TAIL(&sc->sc_txdirtyq, txs, txs_q); 3852 3853 last_txs = txs; 3854 } 3855 3856 if (txs == NULL || sc->sc_txfree == 0) { 3857 /* No more slots left; notify upper layer. */ 3858 ifp->if_flags |= IFF_OACTIVE; 3859 } 3860 3861 if (sc->sc_txfree != ofree) { 3862 DPRINTF2(sc, ("%s: packets enqueued, IC on %d, OWN on %d\n", 3863 sc->sc_dev.dv_xname, lasttx, firsttx)); 3864 /* 3865 * Cause a transmit interrupt to happen on the 3866 * last packet we enqueued. 3867 */ 3868 sc->sc_txdescs[lasttx].at_flags |= htole32(ATW_TXFLAG_IC); 3869 ATW_CDTXSYNC(sc, lasttx, 1, 3870 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 3871 3872 /* 3873 * The entire packet chain is set up. Give the 3874 * first descriptor to the chip now. 3875 */ 3876 sc->sc_txdescs[firsttx].at_ctl |= htole32(ATW_TXCTL_OWN); 3877 ATW_CDTXSYNC(sc, firsttx, 1, 3878 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 3879 3880 /* Wake up the transmitter. */ 3881 ATW_WRITE(sc, ATW_TDR, 0x1); 3882 3883 /* Set a watchdog timer in case the chip flakes out. */ 3884 sc->sc_tx_timer = 5; 3885 ifp->if_timer = 1; 3886 } 3887 } 3888 3889 /* 3890 * atw_power: 3891 * 3892 * Power management (suspend/resume) hook. 3893 */ 3894 void 3895 atw_power(int why, void *arg) 3896 { 3897 struct atw_softc *sc = arg; 3898 struct ifnet *ifp = &sc->sc_ic.ic_if; 3899 int s; 3900 3901 DPRINTF(sc, ("%s: atw_power(%d,)\n", sc->sc_dev.dv_xname, why)); 3902 3903 s = splnet(); 3904 switch (why) { 3905 case PWR_STANDBY: 3906 /* XXX do nothing. */ 3907 break; 3908 case PWR_SUSPEND: 3909 atw_stop(ifp, 0); 3910 if (sc->sc_power != NULL) 3911 (*sc->sc_power)(sc, why); 3912 break; 3913 case PWR_RESUME: 3914 if (ifp->if_flags & IFF_UP) { 3915 if (sc->sc_power != NULL) 3916 (*sc->sc_power)(sc, why); 3917 atw_init(ifp); 3918 } 3919 break; 3920 case PWR_SOFTSUSPEND: 3921 case PWR_SOFTSTANDBY: 3922 case PWR_SOFTRESUME: 3923 break; 3924 } 3925 splx(s); 3926 } 3927 3928 /* 3929 * atw_ioctl: [ifnet interface function] 3930 * 3931 * Handle control requests from the operator. 3932 */ 3933 int 3934 atw_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 3935 { 3936 struct atw_softc *sc = ifp->if_softc; 3937 struct ifreq *ifr = (struct ifreq *)data; 3938 int s, error = 0; 3939 3940 /* XXX monkey see, monkey do. comes from wi_ioctl. */ 3941 if ((sc->sc_dev.dv_flags & DVF_ACTIVE) == 0) 3942 return ENXIO; 3943 3944 s = splnet(); 3945 3946 switch (cmd) { 3947 case SIOCSIFFLAGS: 3948 if (ifp->if_flags & IFF_UP) { 3949 if (ATW_IS_ENABLED(sc)) { 3950 /* 3951 * To avoid rescanning another access point, 3952 * do not call atw_init() here. Instead, 3953 * only reflect media settings. 3954 */ 3955 atw_filter_setup(sc); 3956 } else 3957 error = atw_init(ifp); 3958 } else if (ATW_IS_ENABLED(sc)) 3959 atw_stop(ifp, 1); 3960 break; 3961 case SIOCADDMULTI: 3962 case SIOCDELMULTI: 3963 error = (cmd == SIOCADDMULTI) ? 3964 ether_addmulti(ifr, &sc->sc_ic.ic_ec) : 3965 ether_delmulti(ifr, &sc->sc_ic.ic_ec); 3966 if (error == ENETRESET) { 3967 if (ATW_IS_ENABLED(sc)) 3968 atw_filter_setup(sc); /* do not rescan */ 3969 error = 0; 3970 } 3971 break; 3972 default: 3973 error = ieee80211_ioctl(ifp, cmd, data); 3974 if (error == ENETRESET) { 3975 if (ATW_IS_ENABLED(sc)) 3976 error = atw_init(ifp); 3977 else 3978 error = 0; 3979 } 3980 break; 3981 } 3982 3983 /* Try to get more packets going. */ 3984 if (ATW_IS_ENABLED(sc)) 3985 atw_start(ifp); 3986 3987 splx(s); 3988 return (error); 3989 } 3990 3991 static int 3992 atw_media_change(struct ifnet *ifp) 3993 { 3994 int error; 3995 3996 error = ieee80211_media_change(ifp); 3997 if (error == ENETRESET) { 3998 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == 3999 (IFF_RUNNING|IFF_UP)) 4000 atw_init(ifp); /* XXX lose error */ 4001 error = 0; 4002 } 4003 return error; 4004 } 4005 4006 static void 4007 atw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 4008 { 4009 struct atw_softc *sc = ifp->if_softc; 4010 4011 if (ATW_IS_ENABLED(sc) == 0) { 4012 imr->ifm_active = IFM_IEEE80211 | IFM_NONE; 4013 imr->ifm_status = 0; 4014 return; 4015 } 4016 ieee80211_media_status(ifp, imr); 4017 } 4018
Indexes created Wed Sep 24 02:09:48 GMT 2025