rtw.c revision 1.104
1 /* $NetBSD: rtw.c,v 1.104 2008/03/15 00:21:12 dyoung Exp $ */ 2 /*- 3 * Copyright (c) 2004, 2005, 2006, 2007 David Young. All rights 4 * reserved. 5 * 6 * Programmed for NetBSD by David Young. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of David Young may not be used to endorse or promote 17 * products derived from this software without specific prior 18 * written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY 21 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 23 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David 24 * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 26 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 31 * OF SUCH DAMAGE. 32 */ 33 /* 34 * Device driver for the Realtek RTL8180 802.11 MAC/BBP. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: rtw.c,v 1.104 2008/03/15 00:21:12 dyoung Exp $"); 39 40 #include "bpfilter.h" 41 42 #include <sys/param.h> 43 #include <sys/sysctl.h> 44 #include <sys/systm.h> 45 #include <sys/callout.h> 46 #include <sys/mbuf.h> 47 #include <sys/malloc.h> 48 #include <sys/kernel.h> 49 #include <sys/time.h> 50 #include <sys/types.h> 51 #include <sys/device.h> 52 53 #include <machine/endian.h> 54 #include <sys/bus.h> 55 #include <sys/intr.h> /* splnet */ 56 57 #include <uvm/uvm_extern.h> 58 59 #include <net/if.h> 60 #include <net/if_media.h> 61 #include <net/if_ether.h> 62 63 #include <net80211/ieee80211_netbsd.h> 64 #include <net80211/ieee80211_var.h> 65 #include <net80211/ieee80211_radiotap.h> 66 67 #if NBPFILTER > 0 68 #include <net/bpf.h> 69 #endif 70 71 #include <dev/ic/rtwreg.h> 72 #include <dev/ic/rtwvar.h> 73 #include <dev/ic/rtwphyio.h> 74 #include <dev/ic/rtwphy.h> 75 76 #include <dev/ic/smc93cx6var.h> 77 78 static int rtw_rfprog_fallback = 0; 79 static int rtw_host_rfio = 0; 80 81 #ifdef RTW_DEBUG 82 int rtw_debug = 0; 83 static int rtw_rxbufs_limit = RTW_RXQLEN; 84 #endif /* RTW_DEBUG */ 85 86 #define NEXT_ATTACH_STATE(sc, state) do { \ 87 DPRINTF(sc, RTW_DEBUG_ATTACH, \ 88 ("%s: attach state %s\n", __func__, #state)); \ 89 sc->sc_attach_state = state; \ 90 } while (0) 91 92 int rtw_dwelltime = 200; /* milliseconds */ 93 static struct ieee80211_cipher rtw_cipher_wep; 94 95 static void rtw_disable_interrupts(struct rtw_regs *); 96 static void rtw_enable_interrupts(struct rtw_softc *); 97 98 static int rtw_init(struct ifnet *); 99 100 static void rtw_start(struct ifnet *); 101 static void rtw_reset_oactive(struct rtw_softc *); 102 static struct mbuf *rtw_beacon_alloc(struct rtw_softc *, 103 struct ieee80211_node *); 104 static u_int rtw_txring_next(struct rtw_regs *, struct rtw_txdesc_blk *); 105 106 static void rtw_io_enable(struct rtw_softc *, uint8_t, int); 107 static int rtw_key_delete(struct ieee80211com *, const struct ieee80211_key *); 108 static int rtw_key_set(struct ieee80211com *, const struct ieee80211_key *, 109 const u_int8_t[IEEE80211_ADDR_LEN]); 110 static void rtw_key_update_end(struct ieee80211com *); 111 static void rtw_key_update_begin(struct ieee80211com *); 112 static int rtw_wep_decap(struct ieee80211_key *, struct mbuf *, int); 113 static void rtw_wep_setkeys(struct rtw_softc *, struct ieee80211_key *, int); 114 115 static void rtw_led_attach(struct rtw_led_state *, void *); 116 static void rtw_led_detach(struct rtw_led_state *); 117 static void rtw_led_init(struct rtw_regs *); 118 static void rtw_led_slowblink(void *); 119 static void rtw_led_fastblink(void *); 120 static void rtw_led_set(struct rtw_led_state *, struct rtw_regs *, int); 121 122 static int rtw_sysctl_verify_rfio(SYSCTLFN_PROTO); 123 static int rtw_sysctl_verify_rfprog(SYSCTLFN_PROTO); 124 #ifdef RTW_DEBUG 125 static void rtw_dump_rings(struct rtw_softc *sc); 126 static void rtw_print_txdesc(struct rtw_softc *, const char *, 127 struct rtw_txsoft *, struct rtw_txdesc_blk *, int); 128 static int rtw_sysctl_verify_debug(SYSCTLFN_PROTO); 129 static int rtw_sysctl_verify_rxbufs_limit(SYSCTLFN_PROTO); 130 #endif /* RTW_DEBUG */ 131 #ifdef RTW_DIAG 132 static void rtw_txring_fixup(struct rtw_softc *sc, const char *fn, int ln); 133 #endif /* RTW_DIAG */ 134 135 /* 136 * Setup sysctl(3) MIB, hw.rtw.* 137 * 138 * TBD condition CTLFLAG_PERMANENT on being an LKM or not 139 */ 140 SYSCTL_SETUP(sysctl_rtw, "sysctl rtw(4) subtree setup") 141 { 142 int rc; 143 const struct sysctlnode *cnode, *rnode; 144 145 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 146 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 147 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 148 goto err; 149 150 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 151 CTLFLAG_PERMANENT, CTLTYPE_NODE, "rtw", 152 "Realtek RTL818x 802.11 controls", 153 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 154 goto err; 155 156 #ifdef RTW_DEBUG 157 /* control debugging printfs */ 158 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 159 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 160 "debug", SYSCTL_DESCR("Enable RTL818x debugging output"), 161 rtw_sysctl_verify_debug, 0, &rtw_debug, 0, 162 CTL_CREATE, CTL_EOL)) != 0) 163 goto err; 164 165 /* Limit rx buffers, for simulating resource exhaustion. */ 166 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 167 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 168 "rxbufs_limit", 169 SYSCTL_DESCR("Set rx buffers limit"), 170 rtw_sysctl_verify_rxbufs_limit, 0, &rtw_rxbufs_limit, 0, 171 CTL_CREATE, CTL_EOL)) != 0) 172 goto err; 173 174 #endif /* RTW_DEBUG */ 175 /* set fallback RF programming method */ 176 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 177 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 178 "rfprog_fallback", 179 SYSCTL_DESCR("Set fallback RF programming method"), 180 rtw_sysctl_verify_rfprog, 0, &rtw_rfprog_fallback, 0, 181 CTL_CREATE, CTL_EOL)) != 0) 182 goto err; 183 184 /* force host to control RF I/O bus */ 185 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 186 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 187 "host_rfio", SYSCTL_DESCR("Enable host control of RF I/O"), 188 rtw_sysctl_verify_rfio, 0, &rtw_host_rfio, 0, 189 CTL_CREATE, CTL_EOL)) != 0) 190 goto err; 191 192 return; 193 err: 194 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 195 } 196 197 static int 198 rtw_sysctl_verify(SYSCTLFN_ARGS, int lower, int upper) 199 { 200 int error, t; 201 struct sysctlnode node; 202 203 node = *rnode; 204 t = *(int*)rnode->sysctl_data; 205 node.sysctl_data = &t; 206 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 207 if (error || newp == NULL) 208 return (error); 209 210 if (t < lower || t > upper) 211 return (EINVAL); 212 213 *(int*)rnode->sysctl_data = t; 214 215 return (0); 216 } 217 218 static int 219 rtw_sysctl_verify_rfprog(SYSCTLFN_ARGS) 220 { 221 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 0, 222 __SHIFTOUT(RTW_CONFIG4_RFTYPE_MASK, RTW_CONFIG4_RFTYPE_MASK)); 223 } 224 225 static int 226 rtw_sysctl_verify_rfio(SYSCTLFN_ARGS) 227 { 228 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 0, 1); 229 } 230 231 #ifdef RTW_DEBUG 232 static int 233 rtw_sysctl_verify_debug(SYSCTLFN_ARGS) 234 { 235 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 236 0, RTW_DEBUG_MAX); 237 } 238 239 static int 240 rtw_sysctl_verify_rxbufs_limit(SYSCTLFN_ARGS) 241 { 242 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 243 0, RTW_RXQLEN); 244 } 245 246 static void 247 rtw_print_regs(struct rtw_regs *regs, const char *dvname, const char *where) 248 { 249 #define PRINTREG32(sc, reg) \ 250 RTW_DPRINTF(RTW_DEBUG_REGDUMP, \ 251 ("%s: reg[ " #reg " / %03x ] = %08x\n", \ 252 dvname, reg, RTW_READ(regs, reg))) 253 254 #define PRINTREG16(sc, reg) \ 255 RTW_DPRINTF(RTW_DEBUG_REGDUMP, \ 256 ("%s: reg[ " #reg " / %03x ] = %04x\n", \ 257 dvname, reg, RTW_READ16(regs, reg))) 258 259 #define PRINTREG8(sc, reg) \ 260 RTW_DPRINTF(RTW_DEBUG_REGDUMP, \ 261 ("%s: reg[ " #reg " / %03x ] = %02x\n", \ 262 dvname, reg, RTW_READ8(regs, reg))) 263 264 RTW_DPRINTF(RTW_DEBUG_REGDUMP, ("%s: %s\n", dvname, where)); 265 266 PRINTREG32(regs, RTW_IDR0); 267 PRINTREG32(regs, RTW_IDR1); 268 PRINTREG32(regs, RTW_MAR0); 269 PRINTREG32(regs, RTW_MAR1); 270 PRINTREG32(regs, RTW_TSFTRL); 271 PRINTREG32(regs, RTW_TSFTRH); 272 PRINTREG32(regs, RTW_TLPDA); 273 PRINTREG32(regs, RTW_TNPDA); 274 PRINTREG32(regs, RTW_THPDA); 275 PRINTREG32(regs, RTW_TCR); 276 PRINTREG32(regs, RTW_RCR); 277 PRINTREG32(regs, RTW_TINT); 278 PRINTREG32(regs, RTW_TBDA); 279 PRINTREG32(regs, RTW_ANAPARM); 280 PRINTREG32(regs, RTW_BB); 281 PRINTREG32(regs, RTW_PHYCFG); 282 PRINTREG32(regs, RTW_WAKEUP0L); 283 PRINTREG32(regs, RTW_WAKEUP0H); 284 PRINTREG32(regs, RTW_WAKEUP1L); 285 PRINTREG32(regs, RTW_WAKEUP1H); 286 PRINTREG32(regs, RTW_WAKEUP2LL); 287 PRINTREG32(regs, RTW_WAKEUP2LH); 288 PRINTREG32(regs, RTW_WAKEUP2HL); 289 PRINTREG32(regs, RTW_WAKEUP2HH); 290 PRINTREG32(regs, RTW_WAKEUP3LL); 291 PRINTREG32(regs, RTW_WAKEUP3LH); 292 PRINTREG32(regs, RTW_WAKEUP3HL); 293 PRINTREG32(regs, RTW_WAKEUP3HH); 294 PRINTREG32(regs, RTW_WAKEUP4LL); 295 PRINTREG32(regs, RTW_WAKEUP4LH); 296 PRINTREG32(regs, RTW_WAKEUP4HL); 297 PRINTREG32(regs, RTW_WAKEUP4HH); 298 PRINTREG32(regs, RTW_DK0); 299 PRINTREG32(regs, RTW_DK1); 300 PRINTREG32(regs, RTW_DK2); 301 PRINTREG32(regs, RTW_DK3); 302 PRINTREG32(regs, RTW_RETRYCTR); 303 PRINTREG32(regs, RTW_RDSAR); 304 PRINTREG32(regs, RTW_FER); 305 PRINTREG32(regs, RTW_FEMR); 306 PRINTREG32(regs, RTW_FPSR); 307 PRINTREG32(regs, RTW_FFER); 308 309 /* 16-bit registers */ 310 PRINTREG16(regs, RTW_BRSR); 311 PRINTREG16(regs, RTW_IMR); 312 PRINTREG16(regs, RTW_ISR); 313 PRINTREG16(regs, RTW_BCNITV); 314 PRINTREG16(regs, RTW_ATIMWND); 315 PRINTREG16(regs, RTW_BINTRITV); 316 PRINTREG16(regs, RTW_ATIMTRITV); 317 PRINTREG16(regs, RTW_CRC16ERR); 318 PRINTREG16(regs, RTW_CRC0); 319 PRINTREG16(regs, RTW_CRC1); 320 PRINTREG16(regs, RTW_CRC2); 321 PRINTREG16(regs, RTW_CRC3); 322 PRINTREG16(regs, RTW_CRC4); 323 PRINTREG16(regs, RTW_CWR); 324 325 /* 8-bit registers */ 326 PRINTREG8(regs, RTW_CR); 327 PRINTREG8(regs, RTW_9346CR); 328 PRINTREG8(regs, RTW_CONFIG0); 329 PRINTREG8(regs, RTW_CONFIG1); 330 PRINTREG8(regs, RTW_CONFIG2); 331 PRINTREG8(regs, RTW_MSR); 332 PRINTREG8(regs, RTW_CONFIG3); 333 PRINTREG8(regs, RTW_CONFIG4); 334 PRINTREG8(regs, RTW_TESTR); 335 PRINTREG8(regs, RTW_PSR); 336 PRINTREG8(regs, RTW_SCR); 337 PRINTREG8(regs, RTW_PHYDELAY); 338 PRINTREG8(regs, RTW_CRCOUNT); 339 PRINTREG8(regs, RTW_PHYADDR); 340 PRINTREG8(regs, RTW_PHYDATAW); 341 PRINTREG8(regs, RTW_PHYDATAR); 342 PRINTREG8(regs, RTW_CONFIG5); 343 PRINTREG8(regs, RTW_TPPOLL); 344 345 PRINTREG16(regs, RTW_BSSID16); 346 PRINTREG32(regs, RTW_BSSID32); 347 #undef PRINTREG32 348 #undef PRINTREG16 349 #undef PRINTREG8 350 } 351 #endif /* RTW_DEBUG */ 352 353 void 354 rtw_continuous_tx_enable(struct rtw_softc *sc, int enable) 355 { 356 struct rtw_regs *regs = &sc->sc_regs; 357 358 uint32_t tcr; 359 tcr = RTW_READ(regs, RTW_TCR); 360 tcr &= ~RTW_TCR_LBK_MASK; 361 if (enable) 362 tcr |= RTW_TCR_LBK_CONT; 363 else 364 tcr |= RTW_TCR_LBK_NORMAL; 365 RTW_WRITE(regs, RTW_TCR, tcr); 366 RTW_SYNC(regs, RTW_TCR, RTW_TCR); 367 rtw_set_access(regs, RTW_ACCESS_ANAPARM); 368 rtw_txdac_enable(sc, !enable); 369 rtw_set_access(regs, RTW_ACCESS_ANAPARM);/* XXX Voodoo from Linux. */ 370 rtw_set_access(regs, RTW_ACCESS_NONE); 371 } 372 373 #ifdef RTW_DEBUG 374 static const char * 375 rtw_access_string(enum rtw_access access) 376 { 377 switch (access) { 378 case RTW_ACCESS_NONE: 379 return "none"; 380 case RTW_ACCESS_CONFIG: 381 return "config"; 382 case RTW_ACCESS_ANAPARM: 383 return "anaparm"; 384 default: 385 return "unknown"; 386 } 387 } 388 #endif /* RTW_DEBUG */ 389 390 static void 391 rtw_set_access1(struct rtw_regs *regs, enum rtw_access naccess) 392 { 393 KASSERT(/* naccess >= RTW_ACCESS_NONE && */ 394 naccess <= RTW_ACCESS_ANAPARM); 395 KASSERT(/* regs->r_access >= RTW_ACCESS_NONE && */ 396 regs->r_access <= RTW_ACCESS_ANAPARM); 397 398 if (naccess == regs->r_access) 399 return; 400 401 switch (naccess) { 402 case RTW_ACCESS_NONE: 403 switch (regs->r_access) { 404 case RTW_ACCESS_ANAPARM: 405 rtw_anaparm_enable(regs, 0); 406 /*FALLTHROUGH*/ 407 case RTW_ACCESS_CONFIG: 408 rtw_config0123_enable(regs, 0); 409 /*FALLTHROUGH*/ 410 case RTW_ACCESS_NONE: 411 break; 412 } 413 break; 414 case RTW_ACCESS_CONFIG: 415 switch (regs->r_access) { 416 case RTW_ACCESS_NONE: 417 rtw_config0123_enable(regs, 1); 418 /*FALLTHROUGH*/ 419 case RTW_ACCESS_CONFIG: 420 break; 421 case RTW_ACCESS_ANAPARM: 422 rtw_anaparm_enable(regs, 0); 423 break; 424 } 425 break; 426 case RTW_ACCESS_ANAPARM: 427 switch (regs->r_access) { 428 case RTW_ACCESS_NONE: 429 rtw_config0123_enable(regs, 1); 430 /*FALLTHROUGH*/ 431 case RTW_ACCESS_CONFIG: 432 rtw_anaparm_enable(regs, 1); 433 /*FALLTHROUGH*/ 434 case RTW_ACCESS_ANAPARM: 435 break; 436 } 437 break; 438 } 439 } 440 441 void 442 rtw_set_access(struct rtw_regs *regs, enum rtw_access access) 443 { 444 rtw_set_access1(regs, access); 445 RTW_DPRINTF(RTW_DEBUG_ACCESS, 446 ("%s: access %s -> %s\n", __func__, 447 rtw_access_string(regs->r_access), 448 rtw_access_string(access))); 449 regs->r_access = access; 450 } 451 452 /* 453 * Enable registers, switch register banks. 454 */ 455 void 456 rtw_config0123_enable(struct rtw_regs *regs, int enable) 457 { 458 uint8_t ecr; 459 ecr = RTW_READ8(regs, RTW_9346CR); 460 ecr &= ~(RTW_9346CR_EEM_MASK | RTW_9346CR_EECS | RTW_9346CR_EESK); 461 if (enable) 462 ecr |= RTW_9346CR_EEM_CONFIG; 463 else { 464 RTW_WBW(regs, RTW_9346CR, MAX(RTW_CONFIG0, RTW_CONFIG3)); 465 ecr |= RTW_9346CR_EEM_NORMAL; 466 } 467 RTW_WRITE8(regs, RTW_9346CR, ecr); 468 RTW_SYNC(regs, RTW_9346CR, RTW_9346CR); 469 } 470 471 /* requires rtw_config0123_enable(, 1) */ 472 void 473 rtw_anaparm_enable(struct rtw_regs *regs, int enable) 474 { 475 uint8_t cfg3; 476 477 cfg3 = RTW_READ8(regs, RTW_CONFIG3); 478 cfg3 |= RTW_CONFIG3_CLKRUNEN; 479 if (enable) 480 cfg3 |= RTW_CONFIG3_PARMEN; 481 else 482 cfg3 &= ~RTW_CONFIG3_PARMEN; 483 RTW_WRITE8(regs, RTW_CONFIG3, cfg3); 484 RTW_SYNC(regs, RTW_CONFIG3, RTW_CONFIG3); 485 } 486 487 /* requires rtw_anaparm_enable(, 1) */ 488 void 489 rtw_txdac_enable(struct rtw_softc *sc, int enable) 490 { 491 uint32_t anaparm; 492 struct rtw_regs *regs = &sc->sc_regs; 493 494 anaparm = RTW_READ(regs, RTW_ANAPARM); 495 if (enable) 496 anaparm &= ~RTW_ANAPARM_TXDACOFF; 497 else 498 anaparm |= RTW_ANAPARM_TXDACOFF; 499 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 500 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 501 } 502 503 static inline int 504 rtw_chip_reset1(struct rtw_regs *regs, device_t dev) 505 { 506 uint8_t cr; 507 int i; 508 509 RTW_WRITE8(regs, RTW_CR, RTW_CR_RST); 510 511 RTW_WBR(regs, RTW_CR, RTW_CR); 512 513 for (i = 0; i < 1000; i++) { 514 if ((cr = RTW_READ8(regs, RTW_CR) & RTW_CR_RST) == 0) { 515 RTW_DPRINTF(RTW_DEBUG_RESET, 516 ("%s: reset in %dus\n", device_xname(dev), i)); 517 return 0; 518 } 519 RTW_RBR(regs, RTW_CR, RTW_CR); 520 DELAY(10); /* 10us */ 521 } 522 523 aprint_error_dev(dev, "reset failed\n"); 524 return ETIMEDOUT; 525 } 526 527 static inline int 528 rtw_chip_reset(struct rtw_regs *regs, device_t dev) 529 { 530 uint32_t tcr; 531 532 /* from Linux driver */ 533 tcr = RTW_TCR_CWMIN | RTW_TCR_MXDMA_2048 | 534 __SHIFTIN(7, RTW_TCR_SRL_MASK) | __SHIFTIN(7, RTW_TCR_LRL_MASK); 535 536 RTW_WRITE(regs, RTW_TCR, tcr); 537 538 RTW_WBW(regs, RTW_CR, RTW_TCR); 539 540 return rtw_chip_reset1(regs, dev); 541 } 542 543 static int 544 rtw_wep_decap(struct ieee80211_key *k, struct mbuf *m, int hdrlen) 545 { 546 struct ieee80211_key keycopy; 547 548 RTW_DPRINTF(RTW_DEBUG_KEY, ("%s:\n", __func__)); 549 550 keycopy = *k; 551 keycopy.wk_flags &= ~IEEE80211_KEY_SWCRYPT; 552 553 return (*ieee80211_cipher_wep.ic_decap)(&keycopy, m, hdrlen); 554 } 555 556 static int 557 rtw_key_delete(struct ieee80211com *ic, const struct ieee80211_key *k) 558 { 559 struct rtw_softc *sc = ic->ic_ifp->if_softc; 560 561 DPRINTF(sc, RTW_DEBUG_KEY, ("%s: delete key %u\n", __func__, 562 k->wk_keyix)); 563 564 KASSERT(k->wk_keyix < IEEE80211_WEP_NKID); 565 566 if (k->wk_keylen != 0 && 567 k->wk_cipher->ic_cipher == IEEE80211_CIPHER_WEP) 568 sc->sc_flags &= ~RTW_F_DK_VALID; 569 570 return 1; 571 } 572 573 static int 574 rtw_key_set(struct ieee80211com *ic, const struct ieee80211_key *k, 575 const u_int8_t mac[IEEE80211_ADDR_LEN]) 576 { 577 struct rtw_softc *sc = ic->ic_ifp->if_softc; 578 579 DPRINTF(sc, RTW_DEBUG_KEY, ("%s: set key %u\n", __func__, k->wk_keyix)); 580 581 KASSERT(k->wk_keyix < IEEE80211_WEP_NKID); 582 583 sc->sc_flags &= ~RTW_F_DK_VALID; 584 585 return 1; 586 } 587 588 static void 589 rtw_key_update_begin(struct ieee80211com *ic) 590 { 591 #ifdef RTW_DEBUG 592 struct ifnet *ifp = ic->ic_ifp; 593 struct rtw_softc *sc = ifp->if_softc; 594 #endif 595 596 DPRINTF(sc, RTW_DEBUG_KEY, ("%s:\n", __func__)); 597 } 598 599 static void 600 rtw_tx_kick(struct rtw_regs *regs, uint8_t ringsel) 601 { 602 uint8_t tppoll; 603 604 tppoll = RTW_READ8(regs, RTW_TPPOLL); 605 tppoll &= ~RTW_TPPOLL_SALL; 606 tppoll |= ringsel & RTW_TPPOLL_ALL; 607 RTW_WRITE8(regs, RTW_TPPOLL, tppoll); 608 RTW_SYNC(regs, RTW_TPPOLL, RTW_TPPOLL); 609 } 610 611 static void 612 rtw_key_update_end(struct ieee80211com *ic) 613 { 614 struct ifnet *ifp = ic->ic_ifp; 615 struct rtw_softc *sc = ifp->if_softc; 616 617 DPRINTF(sc, RTW_DEBUG_KEY, ("%s:\n", __func__)); 618 619 if ((sc->sc_flags & RTW_F_DK_VALID) != 0 || 620 !device_is_active(sc->sc_dev)) 621 return; 622 623 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 624 rtw_wep_setkeys(sc, ic->ic_nw_keys, ic->ic_def_txkey); 625 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 626 (ifp->if_flags & IFF_RUNNING) != 0); 627 } 628 629 static bool 630 rtw_key_hwsupp(uint32_t flags, const struct ieee80211_key *k) 631 { 632 if (k->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 633 return false; 634 635 return ((flags & RTW_C_RXWEP_40) != 0 && k->wk_keylen == 5) || 636 ((flags & RTW_C_RXWEP_104) != 0 && k->wk_keylen == 13); 637 } 638 639 static void 640 rtw_wep_setkeys(struct rtw_softc *sc, struct ieee80211_key *wk, int txkey) 641 { 642 uint8_t psr, scr; 643 int i, keylen = 0; 644 struct rtw_regs *regs; 645 union rtw_keys *rk; 646 647 regs = &sc->sc_regs; 648 rk = &sc->sc_keys; 649 650 (void)memset(rk, 0, sizeof(rk)); 651 652 /* Temporarily use software crypto for all keys. */ 653 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 654 if (wk[i].wk_cipher == &rtw_cipher_wep) 655 wk[i].wk_cipher = &ieee80211_cipher_wep; 656 } 657 658 rtw_set_access(regs, RTW_ACCESS_CONFIG); 659 660 psr = RTW_READ8(regs, RTW_PSR); 661 scr = RTW_READ8(regs, RTW_SCR); 662 scr &= ~(RTW_SCR_KM_MASK | RTW_SCR_TXSECON | RTW_SCR_RXSECON); 663 664 if ((sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) == 0) 665 goto out; 666 667 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 668 if (!rtw_key_hwsupp(sc->sc_flags, &wk[i])) 669 continue; 670 if (i == txkey) { 671 keylen = wk[i].wk_keylen; 672 break; 673 } 674 keylen = MAX(keylen, wk[i].wk_keylen); 675 } 676 677 if (keylen == 5) 678 scr |= RTW_SCR_KM_WEP40 | RTW_SCR_RXSECON; 679 else if (keylen == 13) 680 scr |= RTW_SCR_KM_WEP104 | RTW_SCR_RXSECON; 681 682 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 683 if (wk[i].wk_keylen != keylen || 684 wk[i].wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 685 continue; 686 /* h/w will decrypt, s/w still strips headers */ 687 wk[i].wk_cipher = &rtw_cipher_wep; 688 (void)memcpy(rk->rk_keys[i], wk[i].wk_key, wk[i].wk_keylen); 689 } 690 691 out: 692 RTW_WRITE8(regs, RTW_PSR, psr & ~RTW_PSR_PSEN); 693 694 bus_space_write_region_stream_4(regs->r_bt, regs->r_bh, 695 RTW_DK0, rk->rk_words, __arraycount(rk->rk_words)); 696 697 bus_space_barrier(regs->r_bt, regs->r_bh, RTW_DK0, sizeof(rk->rk_words), 698 BUS_SPACE_BARRIER_SYNC); 699 700 RTW_DPRINTF(RTW_DEBUG_KEY, 701 ("%s.%d: scr %02" PRIx8 ", keylen %d\n", __func__, __LINE__, scr, 702 keylen)); 703 704 RTW_WBW(regs, RTW_DK0, RTW_PSR); 705 RTW_WRITE8(regs, RTW_PSR, psr); 706 RTW_WBW(regs, RTW_PSR, RTW_SCR); 707 RTW_WRITE8(regs, RTW_SCR, scr); 708 RTW_SYNC(regs, RTW_SCR, RTW_SCR); 709 rtw_set_access(regs, RTW_ACCESS_NONE); 710 sc->sc_flags |= RTW_F_DK_VALID; 711 } 712 713 static inline int 714 rtw_recall_eeprom(struct rtw_regs *regs, device_t dev) 715 { 716 int i; 717 uint8_t ecr; 718 719 ecr = RTW_READ8(regs, RTW_9346CR); 720 ecr = (ecr & ~RTW_9346CR_EEM_MASK) | RTW_9346CR_EEM_AUTOLOAD; 721 RTW_WRITE8(regs, RTW_9346CR, ecr); 722 723 RTW_WBR(regs, RTW_9346CR, RTW_9346CR); 724 725 /* wait 25ms for completion */ 726 for (i = 0; i < 250; i++) { 727 ecr = RTW_READ8(regs, RTW_9346CR); 728 if ((ecr & RTW_9346CR_EEM_MASK) == RTW_9346CR_EEM_NORMAL) { 729 RTW_DPRINTF(RTW_DEBUG_RESET, 730 ("%s: recall EEPROM in %dus\n", device_xname(dev), 731 i * 100)); 732 return 0; 733 } 734 RTW_RBR(regs, RTW_9346CR, RTW_9346CR); 735 DELAY(100); 736 } 737 aprint_error_dev(dev, "recall EEPROM failed\n"); 738 return ETIMEDOUT; 739 } 740 741 static inline int 742 rtw_reset(struct rtw_softc *sc) 743 { 744 int rc; 745 uint8_t config1; 746 747 sc->sc_flags &= ~RTW_F_DK_VALID; 748 749 if ((rc = rtw_chip_reset(&sc->sc_regs, sc->sc_dev)) != 0) 750 return rc; 751 752 rc = rtw_recall_eeprom(&sc->sc_regs, sc->sc_dev); 753 754 config1 = RTW_READ8(&sc->sc_regs, RTW_CONFIG1); 755 RTW_WRITE8(&sc->sc_regs, RTW_CONFIG1, config1 & ~RTW_CONFIG1_PMEN); 756 /* TBD turn off maximum power saving? */ 757 758 return 0; 759 } 760 761 static inline int 762 rtw_txdesc_dmamaps_create(bus_dma_tag_t dmat, struct rtw_txsoft *descs, 763 u_int ndescs) 764 { 765 int i, rc = 0; 766 for (i = 0; i < ndescs; i++) { 767 rc = bus_dmamap_create(dmat, MCLBYTES, RTW_MAXPKTSEGS, MCLBYTES, 768 0, 0, &descs[i].ts_dmamap); 769 if (rc != 0) 770 break; 771 } 772 return rc; 773 } 774 775 static inline int 776 rtw_rxdesc_dmamaps_create(bus_dma_tag_t dmat, struct rtw_rxsoft *descs, 777 u_int ndescs) 778 { 779 int i, rc = 0; 780 for (i = 0; i < ndescs; i++) { 781 rc = bus_dmamap_create(dmat, MCLBYTES, 1, MCLBYTES, 0, 0, 782 &descs[i].rs_dmamap); 783 if (rc != 0) 784 break; 785 } 786 return rc; 787 } 788 789 static inline void 790 rtw_rxdesc_dmamaps_destroy(bus_dma_tag_t dmat, struct rtw_rxsoft *descs, 791 u_int ndescs) 792 { 793 int i; 794 for (i = 0; i < ndescs; i++) { 795 if (descs[i].rs_dmamap != NULL) 796 bus_dmamap_destroy(dmat, descs[i].rs_dmamap); 797 } 798 } 799 800 static inline void 801 rtw_txdesc_dmamaps_destroy(bus_dma_tag_t dmat, struct rtw_txsoft *descs, 802 u_int ndescs) 803 { 804 int i; 805 for (i = 0; i < ndescs; i++) { 806 if (descs[i].ts_dmamap != NULL) 807 bus_dmamap_destroy(dmat, descs[i].ts_dmamap); 808 } 809 } 810 811 static inline void 812 rtw_srom_free(struct rtw_srom *sr) 813 { 814 sr->sr_size = 0; 815 if (sr->sr_content == NULL) 816 return; 817 free(sr->sr_content, M_DEVBUF); 818 sr->sr_content = NULL; 819 } 820 821 static void 822 rtw_srom_defaults(struct rtw_srom *sr, uint32_t *flags, 823 uint8_t *cs_threshold, enum rtw_rfchipid *rfchipid, uint32_t *rcr) 824 { 825 *flags |= (RTW_F_DIGPHY|RTW_F_ANTDIV); 826 *cs_threshold = RTW_SR_ENERGYDETTHR_DEFAULT; 827 *rcr |= RTW_RCR_ENCS1; 828 *rfchipid = RTW_RFCHIPID_PHILIPS; 829 } 830 831 static int 832 rtw_srom_parse(struct rtw_srom *sr, uint32_t *flags, uint8_t *cs_threshold, 833 enum rtw_rfchipid *rfchipid, uint32_t *rcr, enum rtw_locale *locale, 834 device_t dev) 835 { 836 int i; 837 const char *rfname, *paname; 838 char scratch[sizeof("unknown 0xXX")]; 839 uint16_t srom_version; 840 uint8_t mac[IEEE80211_ADDR_LEN]; 841 842 *flags &= ~(RTW_F_DIGPHY|RTW_F_DFLANTB|RTW_F_ANTDIV); 843 *rcr &= ~(RTW_RCR_ENCS1 | RTW_RCR_ENCS2); 844 845 srom_version = RTW_SR_GET16(sr, RTW_SR_VERSION); 846 847 if (srom_version <= 0x0101) { 848 aprint_error_dev(dev, 849 "SROM version %d.%d is not understood, " 850 "limping along with defaults\n", 851 srom_version >> 8, srom_version & 0xff); 852 rtw_srom_defaults(sr, flags, cs_threshold, rfchipid, rcr); 853 return 0; 854 } else { 855 aprint_verbose_dev(dev, "SROM version %d.%d", 856 srom_version >> 8, srom_version & 0xff); 857 } 858 859 for (i = 0; i < IEEE80211_ADDR_LEN; i++) 860 mac[i] = RTW_SR_GET(sr, RTW_SR_MAC + i); 861 862 RTW_DPRINTF(RTW_DEBUG_ATTACH, 863 ("%s: EEPROM MAC %s\n", device_xname(dev), ether_sprintf(mac))); 864 865 *cs_threshold = RTW_SR_GET(sr, RTW_SR_ENERGYDETTHR); 866 867 if ((RTW_SR_GET(sr, RTW_SR_CONFIG2) & RTW_CONFIG2_ANT) != 0) 868 *flags |= RTW_F_ANTDIV; 869 870 /* Note well: the sense of the RTW_SR_RFPARM_DIGPHY bit seems 871 * to be reversed. 872 */ 873 if ((RTW_SR_GET(sr, RTW_SR_RFPARM) & RTW_SR_RFPARM_DIGPHY) == 0) 874 *flags |= RTW_F_DIGPHY; 875 if ((RTW_SR_GET(sr, RTW_SR_RFPARM) & RTW_SR_RFPARM_DFLANTB) != 0) 876 *flags |= RTW_F_DFLANTB; 877 878 *rcr |= __SHIFTIN(__SHIFTOUT(RTW_SR_GET(sr, RTW_SR_RFPARM), 879 RTW_SR_RFPARM_CS_MASK), RTW_RCR_ENCS1); 880 881 if ((RTW_SR_GET(sr, RTW_SR_CONFIG0) & RTW_CONFIG0_WEP104) != 0) 882 *flags |= RTW_C_RXWEP_104; 883 884 *flags |= RTW_C_RXWEP_40; /* XXX */ 885 886 *rfchipid = RTW_SR_GET(sr, RTW_SR_RFCHIPID); 887 switch (*rfchipid) { 888 case RTW_RFCHIPID_GCT: /* this combo seen in the wild */ 889 rfname = "GCT GRF5101"; 890 paname = "Winspring WS9901"; 891 break; 892 case RTW_RFCHIPID_MAXIM: 893 rfname = "Maxim MAX2820"; /* guess */ 894 paname = "Maxim MAX2422"; /* guess */ 895 break; 896 case RTW_RFCHIPID_INTERSIL: 897 rfname = "Intersil HFA3873"; /* guess */ 898 paname = "Intersil <unknown>"; 899 break; 900 case RTW_RFCHIPID_PHILIPS: /* this combo seen in the wild */ 901 rfname = "Philips SA2400A"; 902 paname = "Philips SA2411"; 903 break; 904 case RTW_RFCHIPID_RFMD: 905 /* this is the same front-end as an atw(4)! */ 906 rfname = "RFMD RF2948B, " /* mentioned in Realtek docs */ 907 "LNA: RFMD RF2494, " /* mentioned in Realtek docs */ 908 "SYN: Silicon Labs Si4126"; /* inferred from 909 * reference driver 910 */ 911 paname = "RFMD RF2189"; /* mentioned in Realtek docs */ 912 break; 913 case RTW_RFCHIPID_RESERVED: 914 rfname = paname = "reserved"; 915 break; 916 default: 917 snprintf(scratch, sizeof(scratch), "unknown 0x%02x", *rfchipid); 918 rfname = paname = scratch; 919 } 920 aprint_normal_dev(dev, "RF: %s, PA: %s\n", rfname, paname); 921 922 switch (RTW_SR_GET(sr, RTW_SR_CONFIG0) & RTW_CONFIG0_GL_MASK) { 923 case RTW_CONFIG0_GL_USA: 924 case _RTW_CONFIG0_GL_USA: 925 *locale = RTW_LOCALE_USA; 926 break; 927 case RTW_CONFIG0_GL_EUROPE: 928 *locale = RTW_LOCALE_EUROPE; 929 break; 930 case RTW_CONFIG0_GL_JAPAN: 931 *locale = RTW_LOCALE_JAPAN; 932 break; 933 default: 934 *locale = RTW_LOCALE_UNKNOWN; 935 break; 936 } 937 return 0; 938 } 939 940 /* Returns -1 on failure. */ 941 static int 942 rtw_srom_read(struct rtw_regs *regs, uint32_t flags, struct rtw_srom *sr, 943 device_t dev) 944 { 945 int rc; 946 struct seeprom_descriptor sd; 947 uint8_t ecr; 948 949 (void)memset(&sd, 0, sizeof(sd)); 950 951 ecr = RTW_READ8(regs, RTW_9346CR); 952 953 if ((flags & RTW_F_9356SROM) != 0) { 954 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: 93c56 SROM\n", 955 device_xname(dev))); 956 sr->sr_size = 256; 957 sd.sd_chip = C56_66; 958 } else { 959 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: 93c46 SROM\n", 960 device_xname(dev))); 961 sr->sr_size = 128; 962 sd.sd_chip = C46; 963 } 964 965 ecr &= ~(RTW_9346CR_EEDI | RTW_9346CR_EEDO | RTW_9346CR_EESK | 966 RTW_9346CR_EEM_MASK | RTW_9346CR_EECS); 967 ecr |= RTW_9346CR_EEM_PROGRAM; 968 969 RTW_WRITE8(regs, RTW_9346CR, ecr); 970 971 sr->sr_content = malloc(sr->sr_size, M_DEVBUF, M_NOWAIT); 972 973 if (sr->sr_content == NULL) { 974 aprint_error_dev(dev, "unable to allocate SROM buffer\n"); 975 return ENOMEM; 976 } 977 978 (void)memset(sr->sr_content, 0, sr->sr_size); 979 980 /* RTL8180 has a single 8-bit register for controlling the 981 * 93cx6 SROM. There is no "ready" bit. The RTL8180 982 * input/output sense is the reverse of read_seeprom's. 983 */ 984 sd.sd_tag = regs->r_bt; 985 sd.sd_bsh = regs->r_bh; 986 sd.sd_regsize = 1; 987 sd.sd_control_offset = RTW_9346CR; 988 sd.sd_status_offset = RTW_9346CR; 989 sd.sd_dataout_offset = RTW_9346CR; 990 sd.sd_CK = RTW_9346CR_EESK; 991 sd.sd_CS = RTW_9346CR_EECS; 992 sd.sd_DI = RTW_9346CR_EEDO; 993 sd.sd_DO = RTW_9346CR_EEDI; 994 /* make read_seeprom enter EEPROM read/write mode */ 995 sd.sd_MS = ecr; 996 sd.sd_RDY = 0; 997 998 /* TBD bus barriers */ 999 if (!read_seeprom(&sd, sr->sr_content, 0, sr->sr_size/2)) { 1000 aprint_error_dev(dev, "could not read SROM\n"); 1001 free(sr->sr_content, M_DEVBUF); 1002 sr->sr_content = NULL; 1003 return -1; /* XXX */ 1004 } 1005 1006 /* end EEPROM read/write mode */ 1007 RTW_WRITE8(regs, RTW_9346CR, 1008 (ecr & ~RTW_9346CR_EEM_MASK) | RTW_9346CR_EEM_NORMAL); 1009 RTW_WBRW(regs, RTW_9346CR, RTW_9346CR); 1010 1011 if ((rc = rtw_recall_eeprom(regs, dev)) != 0) 1012 return rc; 1013 1014 #ifdef RTW_DEBUG 1015 { 1016 int i; 1017 RTW_DPRINTF(RTW_DEBUG_ATTACH, 1018 ("\n%s: serial ROM:\n\t", device_xname(dev))); 1019 for (i = 0; i < sr->sr_size/2; i++) { 1020 if (((i % 8) == 0) && (i != 0)) 1021 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("\n\t")); 1022 RTW_DPRINTF(RTW_DEBUG_ATTACH, 1023 (" %04x", sr->sr_content[i])); 1024 } 1025 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("\n")); 1026 } 1027 #endif /* RTW_DEBUG */ 1028 return 0; 1029 } 1030 1031 static void 1032 rtw_set_rfprog(struct rtw_regs *regs, enum rtw_rfchipid rfchipid, 1033 device_t dev) 1034 { 1035 uint8_t cfg4; 1036 const char *method; 1037 1038 cfg4 = RTW_READ8(regs, RTW_CONFIG4) & ~RTW_CONFIG4_RFTYPE_MASK; 1039 1040 switch (rfchipid) { 1041 default: 1042 cfg4 |= __SHIFTIN(rtw_rfprog_fallback, RTW_CONFIG4_RFTYPE_MASK); 1043 method = "fallback"; 1044 break; 1045 case RTW_RFCHIPID_INTERSIL: 1046 cfg4 |= RTW_CONFIG4_RFTYPE_INTERSIL; 1047 method = "Intersil"; 1048 break; 1049 case RTW_RFCHIPID_PHILIPS: 1050 cfg4 |= RTW_CONFIG4_RFTYPE_PHILIPS; 1051 method = "Philips"; 1052 break; 1053 case RTW_RFCHIPID_GCT: /* XXX a guess */ 1054 case RTW_RFCHIPID_RFMD: 1055 cfg4 |= RTW_CONFIG4_RFTYPE_RFMD; 1056 method = "RFMD"; 1057 break; 1058 } 1059 1060 RTW_WRITE8(regs, RTW_CONFIG4, cfg4); 1061 1062 RTW_WBR(regs, RTW_CONFIG4, RTW_CONFIG4); 1063 1064 RTW_DPRINTF(RTW_DEBUG_INIT, 1065 ("%s: %s RF programming method, %#02x\n", device_xname(dev), method, 1066 RTW_READ8(regs, RTW_CONFIG4))); 1067 } 1068 1069 static inline void 1070 rtw_init_channels(enum rtw_locale locale, 1071 struct ieee80211_channel (*chans)[IEEE80211_CHAN_MAX+1], device_t dev) 1072 { 1073 int i; 1074 const char *name = NULL; 1075 #define ADD_CHANNEL(_chans, _chan) do { \ 1076 (*_chans)[_chan].ic_flags = IEEE80211_CHAN_B; \ 1077 (*_chans)[_chan].ic_freq = \ 1078 ieee80211_ieee2mhz(_chan, (*_chans)[_chan].ic_flags);\ 1079 } while (0) 1080 1081 switch (locale) { 1082 case RTW_LOCALE_USA: /* 1-11 */ 1083 name = "USA"; 1084 for (i = 1; i <= 11; i++) 1085 ADD_CHANNEL(chans, i); 1086 break; 1087 case RTW_LOCALE_JAPAN: /* 1-14 */ 1088 name = "Japan"; 1089 ADD_CHANNEL(chans, 14); 1090 for (i = 1; i <= 14; i++) 1091 ADD_CHANNEL(chans, i); 1092 break; 1093 case RTW_LOCALE_EUROPE: /* 1-13 */ 1094 name = "Europe"; 1095 for (i = 1; i <= 13; i++) 1096 ADD_CHANNEL(chans, i); 1097 break; 1098 default: /* 10-11 allowed by most countries */ 1099 name = "<unknown>"; 1100 for (i = 10; i <= 11; i++) 1101 ADD_CHANNEL(chans, i); 1102 break; 1103 } 1104 aprint_normal_dev(dev, "Geographic Location %s\n", name); 1105 #undef ADD_CHANNEL 1106 } 1107 1108 1109 static inline void 1110 rtw_identify_country(struct rtw_regs *regs, enum rtw_locale *locale) 1111 { 1112 uint8_t cfg0 = RTW_READ8(regs, RTW_CONFIG0); 1113 1114 switch (cfg0 & RTW_CONFIG0_GL_MASK) { 1115 case RTW_CONFIG0_GL_USA: 1116 case _RTW_CONFIG0_GL_USA: 1117 *locale = RTW_LOCALE_USA; 1118 break; 1119 case RTW_CONFIG0_GL_JAPAN: 1120 *locale = RTW_LOCALE_JAPAN; 1121 break; 1122 case RTW_CONFIG0_GL_EUROPE: 1123 *locale = RTW_LOCALE_EUROPE; 1124 break; 1125 default: 1126 *locale = RTW_LOCALE_UNKNOWN; 1127 break; 1128 } 1129 } 1130 1131 static inline int 1132 rtw_identify_sta(struct rtw_regs *regs, uint8_t (*addr)[IEEE80211_ADDR_LEN], 1133 device_t dev) 1134 { 1135 static const uint8_t empty_macaddr[IEEE80211_ADDR_LEN] = { 1136 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 1137 }; 1138 uint32_t idr0 = RTW_READ(regs, RTW_IDR0), 1139 idr1 = RTW_READ(regs, RTW_IDR1); 1140 1141 (*addr)[0] = __SHIFTOUT(idr0, __BITS(0, 7)); 1142 (*addr)[1] = __SHIFTOUT(idr0, __BITS(8, 15)); 1143 (*addr)[2] = __SHIFTOUT(idr0, __BITS(16, 23)); 1144 (*addr)[3] = __SHIFTOUT(idr0, __BITS(24 ,31)); 1145 1146 (*addr)[4] = __SHIFTOUT(idr1, __BITS(0, 7)); 1147 (*addr)[5] = __SHIFTOUT(idr1, __BITS(8, 15)); 1148 1149 if (IEEE80211_ADDR_EQ(addr, empty_macaddr)) { 1150 aprint_error_dev(dev, 1151 "could not get mac address, attach failed\n"); 1152 return ENXIO; 1153 } 1154 1155 aprint_normal_dev(dev, "802.11 address %s\n", ether_sprintf(*addr)); 1156 1157 return 0; 1158 } 1159 1160 static uint8_t 1161 rtw_chan2txpower(struct rtw_srom *sr, struct ieee80211com *ic, 1162 struct ieee80211_channel *chan) 1163 { 1164 u_int idx = RTW_SR_TXPOWER1 + ieee80211_chan2ieee(ic, chan) - 1; 1165 KASSERT(idx >= RTW_SR_TXPOWER1 && idx <= RTW_SR_TXPOWER14); 1166 return RTW_SR_GET(sr, idx); 1167 } 1168 1169 static void 1170 rtw_txdesc_blk_init_all(struct rtw_txdesc_blk *tdb) 1171 { 1172 int pri; 1173 /* nfree: the number of free descriptors in each ring. 1174 * The beacon ring is a special case: I do not let the 1175 * driver use all of the descriptors on the beacon ring. 1176 * The reasons are two-fold: 1177 * 1178 * (1) A BEACON descriptor's OWN bit is (apparently) not 1179 * updated, so the driver cannot easily know if the descriptor 1180 * belongs to it, or if it is racing the NIC. If the NIC 1181 * does not OWN every descriptor, then the driver can safely 1182 * update the descriptors when RTW_TBDA points at tdb_next. 1183 * 1184 * (2) I hope that the NIC will process more than one BEACON 1185 * descriptor in a single beacon interval, since that will 1186 * enable multiple-BSS support. Since the NIC does not 1187 * clear the OWN bit, there is no natural place for it to 1188 * stop processing BEACON desciptors. Maybe it will *not* 1189 * stop processing them! I do not want to chance the NIC 1190 * looping around and around a saturated beacon ring, so 1191 * I will leave one descriptor unOWNed at all times. 1192 */ 1193 u_int nfree[RTW_NTXPRI] = 1194 {RTW_NTXDESCLO, RTW_NTXDESCMD, RTW_NTXDESCHI, 1195 RTW_NTXDESCBCN - 1}; 1196 1197 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1198 tdb[pri].tdb_nfree = nfree[pri]; 1199 tdb[pri].tdb_next = 0; 1200 } 1201 } 1202 1203 static int 1204 rtw_txsoft_blk_init(struct rtw_txsoft_blk *tsb) 1205 { 1206 int i; 1207 struct rtw_txsoft *ts; 1208 1209 SIMPLEQ_INIT(&tsb->tsb_dirtyq); 1210 SIMPLEQ_INIT(&tsb->tsb_freeq); 1211 for (i = 0; i < tsb->tsb_ndesc; i++) { 1212 ts = &tsb->tsb_desc[i]; 1213 ts->ts_mbuf = NULL; 1214 SIMPLEQ_INSERT_TAIL(&tsb->tsb_freeq, ts, ts_q); 1215 } 1216 tsb->tsb_tx_timer = 0; 1217 return 0; 1218 } 1219 1220 static void 1221 rtw_txsoft_blk_init_all(struct rtw_txsoft_blk *tsb) 1222 { 1223 int pri; 1224 for (pri = 0; pri < RTW_NTXPRI; pri++) 1225 rtw_txsoft_blk_init(&tsb[pri]); 1226 } 1227 1228 static inline void 1229 rtw_rxdescs_sync(struct rtw_rxdesc_blk *rdb, int desc0, int nsync, int ops) 1230 { 1231 KASSERT(nsync <= rdb->rdb_ndesc); 1232 /* sync to end of ring */ 1233 if (desc0 + nsync > rdb->rdb_ndesc) { 1234 bus_dmamap_sync(rdb->rdb_dmat, rdb->rdb_dmamap, 1235 offsetof(struct rtw_descs, hd_rx[desc0]), 1236 sizeof(struct rtw_rxdesc) * (rdb->rdb_ndesc - desc0), ops); 1237 nsync -= (rdb->rdb_ndesc - desc0); 1238 desc0 = 0; 1239 } 1240 1241 KASSERT(desc0 < rdb->rdb_ndesc); 1242 KASSERT(nsync <= rdb->rdb_ndesc); 1243 KASSERT(desc0 + nsync <= rdb->rdb_ndesc); 1244 1245 /* sync what remains */ 1246 bus_dmamap_sync(rdb->rdb_dmat, rdb->rdb_dmamap, 1247 offsetof(struct rtw_descs, hd_rx[desc0]), 1248 sizeof(struct rtw_rxdesc) * nsync, ops); 1249 } 1250 1251 static void 1252 rtw_txdescs_sync(struct rtw_txdesc_blk *tdb, u_int desc0, u_int nsync, int ops) 1253 { 1254 /* sync to end of ring */ 1255 if (desc0 + nsync > tdb->tdb_ndesc) { 1256 bus_dmamap_sync(tdb->tdb_dmat, tdb->tdb_dmamap, 1257 tdb->tdb_ofs + sizeof(struct rtw_txdesc) * desc0, 1258 sizeof(struct rtw_txdesc) * (tdb->tdb_ndesc - desc0), 1259 ops); 1260 nsync -= (tdb->tdb_ndesc - desc0); 1261 desc0 = 0; 1262 } 1263 1264 /* sync what remains */ 1265 bus_dmamap_sync(tdb->tdb_dmat, tdb->tdb_dmamap, 1266 tdb->tdb_ofs + sizeof(struct rtw_txdesc) * desc0, 1267 sizeof(struct rtw_txdesc) * nsync, ops); 1268 } 1269 1270 static void 1271 rtw_txdescs_sync_all(struct rtw_txdesc_blk *tdb) 1272 { 1273 int pri; 1274 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1275 rtw_txdescs_sync(&tdb[pri], 0, tdb[pri].tdb_ndesc, 1276 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1277 } 1278 } 1279 1280 static void 1281 rtw_rxbufs_release(bus_dma_tag_t dmat, struct rtw_rxsoft *desc) 1282 { 1283 int i; 1284 struct rtw_rxsoft *rs; 1285 1286 for (i = 0; i < RTW_RXQLEN; i++) { 1287 rs = &desc[i]; 1288 if (rs->rs_mbuf == NULL) 1289 continue; 1290 bus_dmamap_sync(dmat, rs->rs_dmamap, 0, 1291 rs->rs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1292 bus_dmamap_unload(dmat, rs->rs_dmamap); 1293 m_freem(rs->rs_mbuf); 1294 rs->rs_mbuf = NULL; 1295 } 1296 } 1297 1298 static inline int 1299 rtw_rxsoft_alloc(bus_dma_tag_t dmat, struct rtw_rxsoft *rs) 1300 { 1301 int rc; 1302 struct mbuf *m; 1303 1304 MGETHDR(m, M_DONTWAIT, MT_DATA); 1305 if (m == NULL) 1306 return ENOBUFS; 1307 1308 MCLGET(m, M_DONTWAIT); 1309 if ((m->m_flags & M_EXT) == 0) { 1310 m_freem(m); 1311 return ENOBUFS; 1312 } 1313 1314 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size; 1315 1316 if (rs->rs_mbuf != NULL) 1317 bus_dmamap_unload(dmat, rs->rs_dmamap); 1318 1319 rs->rs_mbuf = NULL; 1320 1321 rc = bus_dmamap_load_mbuf(dmat, rs->rs_dmamap, m, BUS_DMA_NOWAIT); 1322 if (rc != 0) { 1323 m_freem(m); 1324 return -1; 1325 } 1326 1327 rs->rs_mbuf = m; 1328 1329 return 0; 1330 } 1331 1332 static int 1333 rtw_rxsoft_init_all(bus_dma_tag_t dmat, struct rtw_rxsoft *desc, 1334 int *ndesc, device_t dev) 1335 { 1336 int i, rc = 0; 1337 struct rtw_rxsoft *rs; 1338 1339 for (i = 0; i < RTW_RXQLEN; i++) { 1340 rs = &desc[i]; 1341 /* we're in rtw_init, so there should be no mbufs allocated */ 1342 KASSERT(rs->rs_mbuf == NULL); 1343 #ifdef RTW_DEBUG 1344 if (i == rtw_rxbufs_limit) { 1345 aprint_error_dev(dev, "TEST hit %d-buffer limit\n", i); 1346 rc = ENOBUFS; 1347 break; 1348 } 1349 #endif /* RTW_DEBUG */ 1350 if ((rc = rtw_rxsoft_alloc(dmat, rs)) != 0) { 1351 aprint_error_dev(dev, 1352 "rtw_rxsoft_alloc failed, %d buffers, rc %d\n", 1353 i, rc); 1354 break; 1355 } 1356 } 1357 *ndesc = i; 1358 return rc; 1359 } 1360 1361 static inline void 1362 rtw_rxdesc_init(struct rtw_rxdesc_blk *rdb, struct rtw_rxsoft *rs, 1363 int idx, int kick) 1364 { 1365 int is_last = (idx == rdb->rdb_ndesc - 1); 1366 uint32_t ctl, octl, obuf; 1367 struct rtw_rxdesc *rd = &rdb->rdb_desc[idx]; 1368 1369 /* sync the mbuf before the descriptor */ 1370 bus_dmamap_sync(rdb->rdb_dmat, rs->rs_dmamap, 0, 1371 rs->rs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 1372 1373 obuf = rd->rd_buf; 1374 rd->rd_buf = htole32(rs->rs_dmamap->dm_segs[0].ds_addr); 1375 1376 ctl = __SHIFTIN(rs->rs_mbuf->m_len, RTW_RXCTL_LENGTH_MASK) | 1377 RTW_RXCTL_OWN | RTW_RXCTL_FS | RTW_RXCTL_LS; 1378 1379 if (is_last) 1380 ctl |= RTW_RXCTL_EOR; 1381 1382 octl = rd->rd_ctl; 1383 rd->rd_ctl = htole32(ctl); 1384 1385 RTW_DPRINTF( 1386 kick ? (RTW_DEBUG_RECV_DESC | RTW_DEBUG_IO_KICK) 1387 : RTW_DEBUG_RECV_DESC, 1388 ("%s: rd %p buf %08x -> %08x ctl %08x -> %08x\n", __func__, rd, 1389 le32toh(obuf), le32toh(rd->rd_buf), le32toh(octl), 1390 le32toh(rd->rd_ctl))); 1391 1392 /* sync the descriptor */ 1393 bus_dmamap_sync(rdb->rdb_dmat, rdb->rdb_dmamap, 1394 RTW_DESC_OFFSET(hd_rx, idx), sizeof(struct rtw_rxdesc), 1395 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1396 } 1397 1398 static void 1399 rtw_rxdesc_init_all(struct rtw_rxdesc_blk *rdb, struct rtw_rxsoft *ctl, int kick) 1400 { 1401 int i; 1402 struct rtw_rxdesc *rd; 1403 struct rtw_rxsoft *rs; 1404 1405 for (i = 0; i < rdb->rdb_ndesc; i++) { 1406 rd = &rdb->rdb_desc[i]; 1407 rs = &ctl[i]; 1408 rtw_rxdesc_init(rdb, rs, i, kick); 1409 } 1410 } 1411 1412 static void 1413 rtw_io_enable(struct rtw_softc *sc, uint8_t flags, int enable) 1414 { 1415 struct rtw_regs *regs = &sc->sc_regs; 1416 uint8_t cr; 1417 1418 RTW_DPRINTF(RTW_DEBUG_IOSTATE, ("%s: %s 0x%02x\n", __func__, 1419 enable ? "enable" : "disable", flags)); 1420 1421 cr = RTW_READ8(regs, RTW_CR); 1422 1423 /* XXX reference source does not enable MULRW */ 1424 /* enable PCI Read/Write Multiple */ 1425 cr |= RTW_CR_MULRW; 1426 1427 /* The receive engine will always start at RDSAR. */ 1428 if (enable && (flags & ~cr & RTW_CR_RE)) { 1429 struct rtw_rxdesc_blk *rdb; 1430 rdb = &sc->sc_rxdesc_blk; 1431 rdb->rdb_next = 0; 1432 } 1433 1434 RTW_RBW(regs, RTW_CR, RTW_CR); /* XXX paranoia? */ 1435 if (enable) 1436 cr |= flags; 1437 else 1438 cr &= ~flags; 1439 RTW_WRITE8(regs, RTW_CR, cr); 1440 RTW_SYNC(regs, RTW_CR, RTW_CR); 1441 1442 #ifdef RTW_DIAG 1443 if (cr & RTW_CR_TE) 1444 rtw_txring_fixup(sc, __func__, __LINE__); 1445 #endif 1446 if (cr & RTW_CR_TE) { 1447 rtw_tx_kick(&sc->sc_regs, 1448 RTW_TPPOLL_HPQ | RTW_TPPOLL_NPQ | RTW_TPPOLL_LPQ); 1449 } 1450 } 1451 1452 static void 1453 rtw_intr_rx(struct rtw_softc *sc, uint16_t isr) 1454 { 1455 #define IS_BEACON(__fc0) \ 1456 ((__fc0 & (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==\ 1457 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_BEACON)) 1458 1459 static const int ratetbl[4] = {2, 4, 11, 22}; /* convert rates: 1460 * hardware -> net80211 1461 */ 1462 u_int next, nproc = 0; 1463 int hwrate, len, rate, rssi, sq; 1464 uint32_t hrssi, hstat, htsfth, htsftl; 1465 struct rtw_rxdesc *rd; 1466 struct rtw_rxsoft *rs; 1467 struct rtw_rxdesc_blk *rdb; 1468 struct mbuf *m; 1469 struct ifnet *ifp = &sc->sc_if; 1470 1471 struct ieee80211_node *ni; 1472 struct ieee80211_frame_min *wh; 1473 1474 rdb = &sc->sc_rxdesc_blk; 1475 1476 for (next = rdb->rdb_next; ; next = rdb->rdb_next) { 1477 KASSERT(next < rdb->rdb_ndesc); 1478 1479 rtw_rxdescs_sync(rdb, next, 1, 1480 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1481 rd = &rdb->rdb_desc[next]; 1482 rs = &sc->sc_rxsoft[next]; 1483 1484 hstat = le32toh(rd->rd_stat); 1485 hrssi = le32toh(rd->rd_rssi); 1486 htsfth = le32toh(rd->rd_tsfth); 1487 htsftl = le32toh(rd->rd_tsftl); 1488 1489 RTW_DPRINTF(RTW_DEBUG_RECV_DESC, 1490 ("%s: rxdesc[%d] hstat %08x hrssi %08x htsft %08x%08x\n", 1491 __func__, next, hstat, hrssi, htsfth, htsftl)); 1492 1493 ++nproc; 1494 1495 /* still belongs to NIC */ 1496 if ((hstat & RTW_RXSTAT_OWN) != 0) { 1497 rtw_rxdescs_sync(rdb, next, 1, BUS_DMASYNC_PREREAD); 1498 break; 1499 } 1500 1501 /* ieee80211_input() might reset the receive engine 1502 * (e.g. by indirectly calling rtw_tune()), so save 1503 * the next pointer here and retrieve it again on 1504 * the next round. 1505 */ 1506 rdb->rdb_next = (next + 1) % rdb->rdb_ndesc; 1507 1508 #ifdef RTW_DEBUG 1509 #define PRINTSTAT(flag) do { \ 1510 if ((hstat & flag) != 0) { \ 1511 printf("%s" #flag, delim); \ 1512 delim = ","; \ 1513 } \ 1514 } while (0) 1515 if ((rtw_debug & RTW_DEBUG_RECV_DESC) != 0) { 1516 const char *delim = "<"; 1517 printf("%s: ", device_xname(sc->sc_dev)); 1518 if ((hstat & RTW_RXSTAT_DEBUG) != 0) { 1519 printf("status %08x", hstat); 1520 PRINTSTAT(RTW_RXSTAT_SPLCP); 1521 PRINTSTAT(RTW_RXSTAT_MAR); 1522 PRINTSTAT(RTW_RXSTAT_PAR); 1523 PRINTSTAT(RTW_RXSTAT_BAR); 1524 PRINTSTAT(RTW_RXSTAT_PWRMGT); 1525 PRINTSTAT(RTW_RXSTAT_CRC32); 1526 PRINTSTAT(RTW_RXSTAT_ICV); 1527 printf(">, "); 1528 } 1529 } 1530 #endif /* RTW_DEBUG */ 1531 1532 if ((hstat & RTW_RXSTAT_IOERROR) != 0) { 1533 aprint_error_dev(sc->sc_dev, 1534 "DMA error/FIFO overflow %08" PRIx32 ", " 1535 "rx descriptor %d\n", hstat, next); 1536 ifp->if_ierrors++; 1537 goto next; 1538 } 1539 1540 len = __SHIFTOUT(hstat, RTW_RXSTAT_LENGTH_MASK); 1541 if (len < IEEE80211_MIN_LEN) { 1542 sc->sc_ic.ic_stats.is_rx_tooshort++; 1543 goto next; 1544 } 1545 if (len > rs->rs_mbuf->m_len) { 1546 aprint_error_dev(sc->sc_dev, 1547 "rx frame too long, %d > %d, %08" PRIx32 1548 ", desc %d\n", 1549 len, rs->rs_mbuf->m_len, hstat, next); 1550 ifp->if_ierrors++; 1551 goto next; 1552 } 1553 1554 hwrate = __SHIFTOUT(hstat, RTW_RXSTAT_RATE_MASK); 1555 if (hwrate >= __arraycount(ratetbl)) { 1556 aprint_error_dev(sc->sc_dev, 1557 "unknown rate #%" __PRIuBITS "\n", 1558 __SHIFTOUT(hstat, RTW_RXSTAT_RATE_MASK)); 1559 ifp->if_ierrors++; 1560 goto next; 1561 } 1562 rate = ratetbl[hwrate]; 1563 1564 #ifdef RTW_DEBUG 1565 RTW_DPRINTF(RTW_DEBUG_RECV_DESC, 1566 ("rate %d.%d Mb/s, time %08x%08x\n", (rate * 5) / 10, 1567 (rate * 5) % 10, htsfth, htsftl)); 1568 #endif /* RTW_DEBUG */ 1569 1570 /* if bad flags, skip descriptor */ 1571 if ((hstat & RTW_RXSTAT_ONESEG) != RTW_RXSTAT_ONESEG) { 1572 aprint_error_dev(sc->sc_dev, "too many rx segments, " 1573 "next=%d, %08" PRIx32 "\n", next, hstat); 1574 goto next; 1575 } 1576 1577 bus_dmamap_sync(sc->sc_dmat, rs->rs_dmamap, 0, 1578 rs->rs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1579 1580 m = rs->rs_mbuf; 1581 1582 /* if temporarily out of memory, re-use mbuf */ 1583 switch (rtw_rxsoft_alloc(sc->sc_dmat, rs)) { 1584 case 0: 1585 break; 1586 case ENOBUFS: 1587 aprint_error_dev(sc->sc_dev, 1588 "rtw_rxsoft_alloc(, %d) failed, dropping packet\n", 1589 next); 1590 goto next; 1591 default: 1592 /* XXX shorten rx ring, instead? */ 1593 aprint_error_dev(sc->sc_dev, 1594 "could not load DMA map\n"); 1595 } 1596 1597 sq = __SHIFTOUT(hrssi, RTW_RXRSSI_SQ); 1598 1599 if (sc->sc_rfchipid == RTW_RFCHIPID_PHILIPS) 1600 rssi = UINT8_MAX - sq; 1601 else { 1602 rssi = __SHIFTOUT(hrssi, RTW_RXRSSI_IMR_RSSI); 1603 /* TBD find out each front-end's LNA gain in the 1604 * front-end's units 1605 */ 1606 if ((hrssi & RTW_RXRSSI_IMR_LNA) == 0) 1607 rssi |= 0x80; 1608 } 1609 1610 /* Note well: now we cannot recycle the rs_mbuf unless 1611 * we restore its original length. 1612 */ 1613 m->m_pkthdr.rcvif = ifp; 1614 m->m_pkthdr.len = m->m_len = len; 1615 1616 wh = mtod(m, struct ieee80211_frame_min *); 1617 1618 if (!IS_BEACON(wh->i_fc[0])) 1619 sc->sc_led_state.ls_event |= RTW_LED_S_RX; 1620 1621 sc->sc_tsfth = htsfth; 1622 1623 #ifdef RTW_DEBUG 1624 if ((ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == 1625 (IFF_DEBUG|IFF_LINK2)) { 1626 ieee80211_dump_pkt(mtod(m, uint8_t *), m->m_pkthdr.len, 1627 rate, rssi); 1628 } 1629 #endif /* RTW_DEBUG */ 1630 1631 #if NBPFILTER > 0 1632 if (sc->sc_radiobpf != NULL) { 1633 struct rtw_rx_radiotap_header *rr = &sc->sc_rxtap; 1634 1635 rr->rr_tsft = 1636 htole64(((uint64_t)htsfth << 32) | htsftl); 1637 1638 rr->rr_flags = IEEE80211_RADIOTAP_F_FCS; 1639 1640 if ((hstat & RTW_RXSTAT_SPLCP) != 0) 1641 rr->rr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1642 if ((hstat & RTW_RXSTAT_CRC32) != 0) 1643 rr->rr_flags |= IEEE80211_RADIOTAP_F_BADFCS; 1644 1645 rr->rr_rate = rate; 1646 1647 if (sc->sc_rfchipid == RTW_RFCHIPID_PHILIPS) 1648 rr->rr_u.u_philips.p_antsignal = rssi; 1649 else { 1650 rr->rr_u.u_other.o_antsignal = rssi; 1651 rr->rr_u.u_other.o_barker_lock = 1652 htole16(UINT8_MAX - sq); 1653 } 1654 1655 bpf_mtap2(sc->sc_radiobpf, rr, 1656 sizeof(sc->sc_rxtapu), m); 1657 } 1658 #endif /* NBPFILTER > 0 */ 1659 1660 if ((hstat & RTW_RXSTAT_RES) != 0) { 1661 m_freem(m); 1662 goto next; 1663 } 1664 1665 /* CRC is included with the packet; trim it off. */ 1666 m_adj(m, -IEEE80211_CRC_LEN); 1667 1668 /* TBD use _MAR, _BAR, _PAR flags as hints to _find_rxnode? */ 1669 ni = ieee80211_find_rxnode(&sc->sc_ic, wh); 1670 ieee80211_input(&sc->sc_ic, m, ni, rssi, htsftl); 1671 ieee80211_free_node(ni); 1672 next: 1673 rtw_rxdesc_init(rdb, rs, next, 0); 1674 } 1675 #undef IS_BEACON 1676 } 1677 1678 static void 1679 rtw_txsoft_release(bus_dma_tag_t dmat, struct ieee80211com *ic, 1680 struct rtw_txsoft *ts) 1681 { 1682 struct mbuf *m; 1683 struct ieee80211_node *ni; 1684 1685 m = ts->ts_mbuf; 1686 ni = ts->ts_ni; 1687 KASSERT(m != NULL); 1688 KASSERT(ni != NULL); 1689 ts->ts_mbuf = NULL; 1690 ts->ts_ni = NULL; 1691 1692 bus_dmamap_sync(dmat, ts->ts_dmamap, 0, ts->ts_dmamap->dm_mapsize, 1693 BUS_DMASYNC_POSTWRITE); 1694 bus_dmamap_unload(dmat, ts->ts_dmamap); 1695 m_freem(m); 1696 ieee80211_free_node(ni); 1697 } 1698 1699 static void 1700 rtw_txsofts_release(bus_dma_tag_t dmat, struct ieee80211com *ic, 1701 struct rtw_txsoft_blk *tsb) 1702 { 1703 struct rtw_txsoft *ts; 1704 1705 while ((ts = SIMPLEQ_FIRST(&tsb->tsb_dirtyq)) != NULL) { 1706 rtw_txsoft_release(dmat, ic, ts); 1707 SIMPLEQ_REMOVE_HEAD(&tsb->tsb_dirtyq, ts_q); 1708 SIMPLEQ_INSERT_TAIL(&tsb->tsb_freeq, ts, ts_q); 1709 } 1710 tsb->tsb_tx_timer = 0; 1711 } 1712 1713 static inline void 1714 rtw_collect_txpkt(struct rtw_softc *sc, struct rtw_txdesc_blk *tdb, 1715 struct rtw_txsoft *ts, int ndesc) 1716 { 1717 uint32_t hstat; 1718 int data_retry, rts_retry; 1719 struct rtw_txdesc *tdn; 1720 const char *condstring; 1721 struct ifnet *ifp = &sc->sc_if; 1722 1723 rtw_txsoft_release(sc->sc_dmat, &sc->sc_ic, ts); 1724 1725 tdb->tdb_nfree += ndesc; 1726 1727 tdn = &tdb->tdb_desc[ts->ts_last]; 1728 1729 hstat = le32toh(tdn->td_stat); 1730 rts_retry = __SHIFTOUT(hstat, RTW_TXSTAT_RTSRETRY_MASK); 1731 data_retry = __SHIFTOUT(hstat, RTW_TXSTAT_DRC_MASK); 1732 1733 ifp->if_collisions += rts_retry + data_retry; 1734 1735 if ((hstat & RTW_TXSTAT_TOK) != 0) 1736 condstring = "ok"; 1737 else { 1738 ifp->if_oerrors++; 1739 condstring = "error"; 1740 } 1741 1742 DPRINTF(sc, RTW_DEBUG_XMIT_DESC, 1743 ("%s: ts %p txdesc[%d, %d] %s tries rts %u data %u\n", 1744 device_xname(sc->sc_dev), ts, ts->ts_first, ts->ts_last, 1745 condstring, rts_retry, data_retry)); 1746 } 1747 1748 static void 1749 rtw_reset_oactive(struct rtw_softc *sc) 1750 { 1751 short oflags; 1752 int pri; 1753 struct rtw_txsoft_blk *tsb; 1754 struct rtw_txdesc_blk *tdb; 1755 oflags = sc->sc_if.if_flags; 1756 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1757 tsb = &sc->sc_txsoft_blk[pri]; 1758 tdb = &sc->sc_txdesc_blk[pri]; 1759 if (!SIMPLEQ_EMPTY(&tsb->tsb_freeq) && tdb->tdb_nfree > 0) 1760 sc->sc_if.if_flags &= ~IFF_OACTIVE; 1761 } 1762 if (oflags != sc->sc_if.if_flags) { 1763 DPRINTF(sc, RTW_DEBUG_OACTIVE, 1764 ("%s: reset OACTIVE\n", __func__)); 1765 } 1766 } 1767 1768 /* Collect transmitted packets. */ 1769 static void 1770 rtw_collect_txring(struct rtw_softc *sc, struct rtw_txsoft_blk *tsb, 1771 struct rtw_txdesc_blk *tdb, int force) 1772 { 1773 int ndesc; 1774 struct rtw_txsoft *ts; 1775 1776 #ifdef RTW_DEBUG 1777 rtw_dump_rings(sc); 1778 #endif 1779 1780 while ((ts = SIMPLEQ_FIRST(&tsb->tsb_dirtyq)) != NULL) { 1781 /* If we're clearing a failed transmission, only clear 1782 up to the last packet the hardware has processed. */ 1783 if (ts->ts_first == rtw_txring_next(&sc->sc_regs, tdb)) 1784 break; 1785 1786 ndesc = 1 + ts->ts_last - ts->ts_first; 1787 if (ts->ts_last < ts->ts_first) 1788 ndesc += tdb->tdb_ndesc; 1789 1790 KASSERT(ndesc > 0); 1791 1792 rtw_txdescs_sync(tdb, ts->ts_first, ndesc, 1793 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1794 1795 if (force) { 1796 int next; 1797 #ifdef RTW_DIAG 1798 printf("%s: clearing packet, stats", __func__); 1799 #endif 1800 for (next = ts->ts_first; ; 1801 next = RTW_NEXT_IDX(tdb, next)) { 1802 #ifdef RTW_DIAG 1803 printf(" %" PRIx32 "/%" PRIx32 "/%" PRIx32 "/%" PRIu32 "/%" PRIx32, le32toh(tdb->tdb_desc[next].td_stat), le32toh(tdb->tdb_desc[next].td_ctl1), le32toh(tdb->tdb_desc[next].td_buf), le32toh(tdb->tdb_desc[next].td_len), le32toh(tdb->tdb_desc[next].td_next)); 1804 #endif 1805 tdb->tdb_desc[next].td_stat &= 1806 ~htole32(RTW_TXSTAT_OWN); 1807 if (next == ts->ts_last) 1808 break; 1809 } 1810 rtw_txdescs_sync(tdb, ts->ts_first, ndesc, 1811 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1812 #ifdef RTW_DIAG 1813 next = RTW_NEXT_IDX(tdb, next); 1814 printf(" -> end %u stat %" PRIx32 ", was %u\n", next, 1815 le32toh(tdb->tdb_desc[next].td_stat), 1816 rtw_txring_next(&sc->sc_regs, tdb)); 1817 #endif 1818 } else if ((tdb->tdb_desc[ts->ts_last].td_stat & 1819 htole32(RTW_TXSTAT_OWN)) != 0) { 1820 rtw_txdescs_sync(tdb, ts->ts_last, 1, 1821 BUS_DMASYNC_PREREAD); 1822 break; 1823 } 1824 1825 rtw_collect_txpkt(sc, tdb, ts, ndesc); 1826 SIMPLEQ_REMOVE_HEAD(&tsb->tsb_dirtyq, ts_q); 1827 SIMPLEQ_INSERT_TAIL(&tsb->tsb_freeq, ts, ts_q); 1828 } 1829 1830 /* no more pending transmissions, cancel watchdog */ 1831 if (ts == NULL) 1832 tsb->tsb_tx_timer = 0; 1833 rtw_reset_oactive(sc); 1834 } 1835 1836 static void 1837 rtw_intr_tx(struct rtw_softc *sc, uint16_t isr) 1838 { 1839 int pri; 1840 struct rtw_txsoft_blk *tsb; 1841 struct rtw_txdesc_blk *tdb; 1842 struct ifnet *ifp = &sc->sc_if; 1843 1844 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1845 tsb = &sc->sc_txsoft_blk[pri]; 1846 tdb = &sc->sc_txdesc_blk[pri]; 1847 rtw_collect_txring(sc, tsb, tdb, 0); 1848 } 1849 1850 if ((isr & RTW_INTR_TX) != 0) 1851 rtw_start(ifp); 1852 1853 return; 1854 } 1855 1856 static void 1857 rtw_intr_beacon(struct rtw_softc *sc, uint16_t isr) 1858 { 1859 u_int next; 1860 uint32_t tsfth, tsftl; 1861 struct ieee80211com *ic; 1862 struct rtw_txdesc_blk *tdb = &sc->sc_txdesc_blk[RTW_TXPRIBCN]; 1863 struct rtw_txsoft_blk *tsb = &sc->sc_txsoft_blk[RTW_TXPRIBCN]; 1864 struct mbuf *m; 1865 1866 tsfth = RTW_READ(&sc->sc_regs, RTW_TSFTRH); 1867 tsftl = RTW_READ(&sc->sc_regs, RTW_TSFTRL); 1868 1869 if ((isr & (RTW_INTR_TBDOK|RTW_INTR_TBDER)) != 0) { 1870 next = rtw_txring_next(&sc->sc_regs, tdb); 1871 RTW_DPRINTF(RTW_DEBUG_BEACON, 1872 ("%s: beacon ring %sprocessed, isr = %#04" PRIx16 1873 ", next %u expected %u, %" PRIu64 "\n", __func__, 1874 (next == tdb->tdb_next) ? "" : "un", isr, next, 1875 tdb->tdb_next, (uint64_t)tsfth << 32 | tsftl)); 1876 if ((RTW_READ8(&sc->sc_regs, RTW_TPPOLL) & RTW_TPPOLL_BQ) == 0) 1877 rtw_collect_txring(sc, tsb, tdb, 1); 1878 } 1879 /* Start beacon transmission. */ 1880 1881 if ((isr & RTW_INTR_BCNINT) != 0 && 1882 sc->sc_ic.ic_state == IEEE80211_S_RUN && 1883 SIMPLEQ_EMPTY(&tsb->tsb_dirtyq)) { 1884 RTW_DPRINTF(RTW_DEBUG_BEACON, 1885 ("%s: beacon prep. time, isr = %#04" PRIx16 1886 ", %16" PRIu64 "\n", __func__, isr, 1887 (uint64_t)tsfth << 32 | tsftl)); 1888 ic = &sc->sc_ic; 1889 m = rtw_beacon_alloc(sc, ic->ic_bss); 1890 1891 if (m == NULL) { 1892 aprint_error_dev(sc->sc_dev, 1893 "could not allocate beacon\n"); 1894 return; 1895 } 1896 m->m_pkthdr.rcvif = (void *)ieee80211_ref_node(ic->ic_bss); 1897 IF_ENQUEUE(&sc->sc_beaconq, m); 1898 rtw_start(&sc->sc_if); 1899 } 1900 } 1901 1902 static void 1903 rtw_intr_atim(struct rtw_softc *sc) 1904 { 1905 /* TBD */ 1906 return; 1907 } 1908 1909 #ifdef RTW_DEBUG 1910 static void 1911 rtw_dump_rings(struct rtw_softc *sc) 1912 { 1913 struct rtw_txdesc_blk *tdb; 1914 struct rtw_rxdesc *rd; 1915 struct rtw_rxdesc_blk *rdb; 1916 int desc, pri; 1917 1918 if ((rtw_debug & RTW_DEBUG_IO_KICK) == 0) 1919 return; 1920 1921 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1922 tdb = &sc->sc_txdesc_blk[pri]; 1923 printf("%s: txpri %d ndesc %d nfree %d\n", __func__, pri, 1924 tdb->tdb_ndesc, tdb->tdb_nfree); 1925 for (desc = 0; desc < tdb->tdb_ndesc; desc++) 1926 rtw_print_txdesc(sc, ".", NULL, tdb, desc); 1927 } 1928 1929 rdb = &sc->sc_rxdesc_blk; 1930 1931 for (desc = 0; desc < RTW_RXQLEN; desc++) { 1932 rd = &rdb->rdb_desc[desc]; 1933 printf("%s: %sctl %08x rsvd0/rssi %08x buf/tsftl %08x " 1934 "rsvd1/tsfth %08x\n", __func__, 1935 (desc >= rdb->rdb_ndesc) ? "UNUSED " : "", 1936 le32toh(rd->rd_ctl), le32toh(rd->rd_rssi), 1937 le32toh(rd->rd_buf), le32toh(rd->rd_tsfth)); 1938 } 1939 } 1940 #endif /* RTW_DEBUG */ 1941 1942 static void 1943 rtw_hwring_setup(struct rtw_softc *sc) 1944 { 1945 int pri; 1946 struct rtw_regs *regs = &sc->sc_regs; 1947 struct rtw_txdesc_blk *tdb; 1948 1949 sc->sc_txdesc_blk[RTW_TXPRILO].tdb_basereg = RTW_TLPDA; 1950 sc->sc_txdesc_blk[RTW_TXPRILO].tdb_base = RTW_RING_BASE(sc, hd_txlo); 1951 sc->sc_txdesc_blk[RTW_TXPRIMD].tdb_basereg = RTW_TNPDA; 1952 sc->sc_txdesc_blk[RTW_TXPRIMD].tdb_base = RTW_RING_BASE(sc, hd_txmd); 1953 sc->sc_txdesc_blk[RTW_TXPRIHI].tdb_basereg = RTW_THPDA; 1954 sc->sc_txdesc_blk[RTW_TXPRIHI].tdb_base = RTW_RING_BASE(sc, hd_txhi); 1955 sc->sc_txdesc_blk[RTW_TXPRIBCN].tdb_basereg = RTW_TBDA; 1956 sc->sc_txdesc_blk[RTW_TXPRIBCN].tdb_base = RTW_RING_BASE(sc, hd_bcn); 1957 1958 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1959 tdb = &sc->sc_txdesc_blk[pri]; 1960 RTW_WRITE(regs, tdb->tdb_basereg, tdb->tdb_base); 1961 RTW_DPRINTF(RTW_DEBUG_XMIT_DESC, 1962 ("%s: reg[tdb->tdb_basereg] <- %" PRIxPTR "\n", __func__, 1963 (uintptr_t)tdb->tdb_base)); 1964 } 1965 1966 RTW_WRITE(regs, RTW_RDSAR, RTW_RING_BASE(sc, hd_rx)); 1967 1968 RTW_DPRINTF(RTW_DEBUG_RECV_DESC, 1969 ("%s: reg[RDSAR] <- %" PRIxPTR "\n", __func__, 1970 (uintptr_t)RTW_RING_BASE(sc, hd_rx))); 1971 1972 RTW_SYNC(regs, RTW_TLPDA, RTW_RDSAR); 1973 1974 } 1975 1976 static int 1977 rtw_swring_setup(struct rtw_softc *sc) 1978 { 1979 int rc; 1980 struct rtw_rxdesc_blk *rdb; 1981 1982 rtw_txdesc_blk_init_all(&sc->sc_txdesc_blk[0]); 1983 1984 rtw_txsoft_blk_init_all(&sc->sc_txsoft_blk[0]); 1985 1986 rdb = &sc->sc_rxdesc_blk; 1987 if ((rc = rtw_rxsoft_init_all(sc->sc_dmat, sc->sc_rxsoft, &rdb->rdb_ndesc, 1988 sc->sc_dev)) != 0 && rdb->rdb_ndesc == 0) { 1989 aprint_error_dev(sc->sc_dev, "could not allocate rx buffers\n"); 1990 return rc; 1991 } 1992 1993 rdb = &sc->sc_rxdesc_blk; 1994 rtw_rxdescs_sync(rdb, 0, rdb->rdb_ndesc, 1995 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1996 rtw_rxdesc_init_all(rdb, sc->sc_rxsoft, 1); 1997 rdb->rdb_next = 0; 1998 1999 rtw_txdescs_sync_all(&sc->sc_txdesc_blk[0]); 2000 return 0; 2001 } 2002 2003 static void 2004 rtw_txdesc_blk_init(struct rtw_txdesc_blk *tdb) 2005 { 2006 int i; 2007 2008 (void)memset(tdb->tdb_desc, 0, 2009 sizeof(tdb->tdb_desc[0]) * tdb->tdb_ndesc); 2010 for (i = 0; i < tdb->tdb_ndesc; i++) 2011 tdb->tdb_desc[i].td_next = htole32(RTW_NEXT_DESC(tdb, i)); 2012 } 2013 2014 static u_int 2015 rtw_txring_next(struct rtw_regs *regs, struct rtw_txdesc_blk *tdb) 2016 { 2017 return (le32toh(RTW_READ(regs, tdb->tdb_basereg)) - tdb->tdb_base) / 2018 sizeof(struct rtw_txdesc); 2019 } 2020 2021 #ifdef RTW_DIAG 2022 static void 2023 rtw_txring_fixup(struct rtw_softc *sc, const char *fn, int ln) 2024 { 2025 int pri; 2026 u_int next; 2027 struct rtw_txdesc_blk *tdb; 2028 struct rtw_regs *regs = &sc->sc_regs; 2029 2030 for (pri = 0; pri < RTW_NTXPRI; pri++) { 2031 int i; 2032 tdb = &sc->sc_txdesc_blk[pri]; 2033 next = rtw_txring_next(regs, tdb); 2034 if (tdb->tdb_next == next) 2035 continue; 2036 for (i = 0; next != tdb->tdb_next; 2037 next = RTW_NEXT_IDX(tdb, next), i++) { 2038 if ((tdb->tdb_desc[next].td_stat & htole32(RTW_TXSTAT_OWN)) == 0) 2039 break; 2040 } 2041 printf("%s:%d: tx-ring %d expected next %u, read %u+%d -> %s\n", fn, 2042 ln, pri, tdb->tdb_next, next, i, tdb->tdb_next == next ? "okay" : "BAD"); 2043 if (tdb->tdb_next == next) 2044 continue; 2045 tdb->tdb_next = MIN(next, tdb->tdb_ndesc - 1); 2046 } 2047 } 2048 #endif 2049 2050 static void 2051 rtw_txdescs_reset(struct rtw_softc *sc) 2052 { 2053 int pri; 2054 struct rtw_txsoft_blk *tsb; 2055 struct rtw_txdesc_blk *tdb; 2056 2057 for (pri = 0; pri < RTW_NTXPRI; pri++) { 2058 tsb = &sc->sc_txsoft_blk[pri]; 2059 tdb = &sc->sc_txdesc_blk[pri]; 2060 rtw_collect_txring(sc, tsb, tdb, 1); 2061 #ifdef RTW_DIAG 2062 if (!SIMPLEQ_EMPTY(&tsb->tsb_dirtyq)) 2063 printf("%s: packets left in ring %d\n", __func__, pri); 2064 #endif 2065 } 2066 } 2067 2068 static void 2069 rtw_intr_ioerror(struct rtw_softc *sc, uint16_t isr) 2070 { 2071 aprint_error_dev(sc->sc_dev, "tx fifo underflow\n"); 2072 2073 RTW_DPRINTF(RTW_DEBUG_BUGS, ("%s: cleaning up xmit, isr %" PRIx16 2074 "\n", device_xname(sc->sc_dev), isr)); 2075 2076 #ifdef RTW_DEBUG 2077 rtw_dump_rings(sc); 2078 #endif /* RTW_DEBUG */ 2079 2080 /* Collect tx'd packets. XXX let's hope this stops the transmit 2081 * timeouts. 2082 */ 2083 rtw_txdescs_reset(sc); 2084 2085 #ifdef RTW_DEBUG 2086 rtw_dump_rings(sc); 2087 #endif /* RTW_DEBUG */ 2088 } 2089 2090 static inline void 2091 rtw_suspend_ticks(struct rtw_softc *sc) 2092 { 2093 RTW_DPRINTF(RTW_DEBUG_TIMEOUT, 2094 ("%s: suspending ticks\n", device_xname(sc->sc_dev))); 2095 sc->sc_do_tick = 0; 2096 } 2097 2098 static inline void 2099 rtw_resume_ticks(struct rtw_softc *sc) 2100 { 2101 uint32_t tsftrl0, tsftrl1, next_tick; 2102 2103 tsftrl0 = RTW_READ(&sc->sc_regs, RTW_TSFTRL); 2104 2105 tsftrl1 = RTW_READ(&sc->sc_regs, RTW_TSFTRL); 2106 next_tick = tsftrl1 + 1000000; 2107 RTW_WRITE(&sc->sc_regs, RTW_TINT, next_tick); 2108 2109 sc->sc_do_tick = 1; 2110 2111 RTW_DPRINTF(RTW_DEBUG_TIMEOUT, 2112 ("%s: resume ticks delta %#08x now %#08x next %#08x\n", 2113 device_xname(sc->sc_dev), tsftrl1 - tsftrl0, tsftrl1, next_tick)); 2114 } 2115 2116 static void 2117 rtw_intr_timeout(struct rtw_softc *sc) 2118 { 2119 RTW_DPRINTF(RTW_DEBUG_TIMEOUT, ("%s: timeout\n", device_xname(sc->sc_dev))); 2120 if (sc->sc_do_tick) 2121 rtw_resume_ticks(sc); 2122 return; 2123 } 2124 2125 int 2126 rtw_intr(void *arg) 2127 { 2128 int i; 2129 struct rtw_softc *sc = arg; 2130 struct rtw_regs *regs = &sc->sc_regs; 2131 uint16_t isr; 2132 struct ifnet *ifp = &sc->sc_if; 2133 2134 /* 2135 * If the interface isn't running, the interrupt couldn't 2136 * possibly have come from us. 2137 */ 2138 if ((ifp->if_flags & IFF_RUNNING) == 0 || 2139 !device_is_active(sc->sc_dev)) { 2140 RTW_DPRINTF(RTW_DEBUG_INTR, ("%s: stray interrupt\n", 2141 device_xname(sc->sc_dev))); 2142 return (0); 2143 } 2144 2145 for (i = 0; i < 10; i++) { 2146 isr = RTW_READ16(regs, RTW_ISR); 2147 2148 RTW_WRITE16(regs, RTW_ISR, isr); 2149 RTW_WBR(regs, RTW_ISR, RTW_ISR); 2150 2151 if (sc->sc_intr_ack != NULL) 2152 (*sc->sc_intr_ack)(regs); 2153 2154 if (isr == 0) 2155 break; 2156 2157 #ifdef RTW_DEBUG 2158 #define PRINTINTR(flag) do { \ 2159 if ((isr & flag) != 0) { \ 2160 printf("%s" #flag, delim); \ 2161 delim = ","; \ 2162 } \ 2163 } while (0) 2164 2165 if ((rtw_debug & RTW_DEBUG_INTR) != 0 && isr != 0) { 2166 const char *delim = "<"; 2167 2168 printf("%s: reg[ISR] = %x", device_xname(sc->sc_dev), 2169 isr); 2170 2171 PRINTINTR(RTW_INTR_TXFOVW); 2172 PRINTINTR(RTW_INTR_TIMEOUT); 2173 PRINTINTR(RTW_INTR_BCNINT); 2174 PRINTINTR(RTW_INTR_ATIMINT); 2175 PRINTINTR(RTW_INTR_TBDER); 2176 PRINTINTR(RTW_INTR_TBDOK); 2177 PRINTINTR(RTW_INTR_THPDER); 2178 PRINTINTR(RTW_INTR_THPDOK); 2179 PRINTINTR(RTW_INTR_TNPDER); 2180 PRINTINTR(RTW_INTR_TNPDOK); 2181 PRINTINTR(RTW_INTR_RXFOVW); 2182 PRINTINTR(RTW_INTR_RDU); 2183 PRINTINTR(RTW_INTR_TLPDER); 2184 PRINTINTR(RTW_INTR_TLPDOK); 2185 PRINTINTR(RTW_INTR_RER); 2186 PRINTINTR(RTW_INTR_ROK); 2187 2188 printf(">\n"); 2189 } 2190 #undef PRINTINTR 2191 #endif /* RTW_DEBUG */ 2192 2193 if ((isr & RTW_INTR_RX) != 0) 2194 rtw_intr_rx(sc, isr); 2195 if ((isr & RTW_INTR_TX) != 0) 2196 rtw_intr_tx(sc, isr); 2197 if ((isr & RTW_INTR_BEACON) != 0) 2198 rtw_intr_beacon(sc, isr); 2199 if ((isr & RTW_INTR_ATIMINT) != 0) 2200 rtw_intr_atim(sc); 2201 if ((isr & RTW_INTR_IOERROR) != 0) 2202 rtw_intr_ioerror(sc, isr); 2203 if ((isr & RTW_INTR_TIMEOUT) != 0) 2204 rtw_intr_timeout(sc); 2205 } 2206 2207 return 1; 2208 } 2209 2210 /* Must be called at splnet. */ 2211 static void 2212 rtw_stop(struct ifnet *ifp, int disable) 2213 { 2214 int pri; 2215 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 2216 struct ieee80211com *ic = &sc->sc_ic; 2217 struct rtw_regs *regs = &sc->sc_regs; 2218 2219 rtw_suspend_ticks(sc); 2220 2221 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2222 2223 if (device_has_power(sc->sc_dev)) { 2224 /* Disable interrupts. */ 2225 RTW_WRITE16(regs, RTW_IMR, 0); 2226 2227 RTW_WBW(regs, RTW_TPPOLL, RTW_IMR); 2228 2229 /* Stop the transmit and receive processes. First stop DMA, 2230 * then disable receiver and transmitter. 2231 */ 2232 RTW_WRITE8(regs, RTW_TPPOLL, RTW_TPPOLL_SALL); 2233 2234 RTW_SYNC(regs, RTW_TPPOLL, RTW_IMR); 2235 2236 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 2237 } 2238 2239 for (pri = 0; pri < RTW_NTXPRI; pri++) { 2240 rtw_txsofts_release(sc->sc_dmat, &sc->sc_ic, 2241 &sc->sc_txsoft_blk[pri]); 2242 } 2243 2244 rtw_rxbufs_release(sc->sc_dmat, &sc->sc_rxsoft[0]); 2245 2246 /* Mark the interface as not running. Cancel the watchdog timer. */ 2247 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2248 ifp->if_timer = 0; 2249 2250 if (disable) 2251 pmf_device_suspend_self(sc->sc_dev); 2252 2253 return; 2254 } 2255 2256 const char * 2257 rtw_pwrstate_string(enum rtw_pwrstate power) 2258 { 2259 switch (power) { 2260 case RTW_ON: 2261 return "on"; 2262 case RTW_SLEEP: 2263 return "sleep"; 2264 case RTW_OFF: 2265 return "off"; 2266 default: 2267 return "unknown"; 2268 } 2269 } 2270 2271 /* XXX For Maxim, I am using the RFMD settings gleaned from the 2272 * reference driver, plus a magic Maxim "ON" value that comes from 2273 * the Realtek document "Windows PG for Rtl8180." 2274 */ 2275 static void 2276 rtw_maxim_pwrstate(struct rtw_regs *regs, enum rtw_pwrstate power, 2277 int before_rf, int digphy) 2278 { 2279 uint32_t anaparm; 2280 2281 anaparm = RTW_READ(regs, RTW_ANAPARM); 2282 anaparm &= ~(RTW_ANAPARM_RFPOW_MASK | RTW_ANAPARM_TXDACOFF); 2283 2284 switch (power) { 2285 case RTW_OFF: 2286 if (before_rf) 2287 return; 2288 anaparm |= RTW_ANAPARM_RFPOW_MAXIM_OFF; 2289 anaparm |= RTW_ANAPARM_TXDACOFF; 2290 break; 2291 case RTW_SLEEP: 2292 if (!before_rf) 2293 return; 2294 anaparm |= RTW_ANAPARM_RFPOW_MAXIM_SLEEP; 2295 anaparm |= RTW_ANAPARM_TXDACOFF; 2296 break; 2297 case RTW_ON: 2298 if (!before_rf) 2299 return; 2300 anaparm |= RTW_ANAPARM_RFPOW_MAXIM_ON; 2301 break; 2302 } 2303 RTW_DPRINTF(RTW_DEBUG_PWR, 2304 ("%s: power state %s, %s RF, reg[ANAPARM] <- %08x\n", 2305 __func__, rtw_pwrstate_string(power), 2306 (before_rf) ? "before" : "after", anaparm)); 2307 2308 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 2309 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 2310 } 2311 2312 /* XXX I am using the RFMD settings gleaned from the reference 2313 * driver. They agree 2314 */ 2315 static void 2316 rtw_rfmd_pwrstate(struct rtw_regs *regs, enum rtw_pwrstate power, 2317 int before_rf, int digphy) 2318 { 2319 uint32_t anaparm; 2320 2321 anaparm = RTW_READ(regs, RTW_ANAPARM); 2322 anaparm &= ~(RTW_ANAPARM_RFPOW_MASK | RTW_ANAPARM_TXDACOFF); 2323 2324 switch (power) { 2325 case RTW_OFF: 2326 if (before_rf) 2327 return; 2328 anaparm |= RTW_ANAPARM_RFPOW_RFMD_OFF; 2329 anaparm |= RTW_ANAPARM_TXDACOFF; 2330 break; 2331 case RTW_SLEEP: 2332 if (!before_rf) 2333 return; 2334 anaparm |= RTW_ANAPARM_RFPOW_RFMD_SLEEP; 2335 anaparm |= RTW_ANAPARM_TXDACOFF; 2336 break; 2337 case RTW_ON: 2338 if (!before_rf) 2339 return; 2340 anaparm |= RTW_ANAPARM_RFPOW_RFMD_ON; 2341 break; 2342 } 2343 RTW_DPRINTF(RTW_DEBUG_PWR, 2344 ("%s: power state %s, %s RF, reg[ANAPARM] <- %08x\n", 2345 __func__, rtw_pwrstate_string(power), 2346 (before_rf) ? "before" : "after", anaparm)); 2347 2348 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 2349 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 2350 } 2351 2352 static void 2353 rtw_philips_pwrstate(struct rtw_regs *regs, enum rtw_pwrstate power, 2354 int before_rf, int digphy) 2355 { 2356 uint32_t anaparm; 2357 2358 anaparm = RTW_READ(regs, RTW_ANAPARM); 2359 anaparm &= ~(RTW_ANAPARM_RFPOW_MASK | RTW_ANAPARM_TXDACOFF); 2360 2361 switch (power) { 2362 case RTW_OFF: 2363 if (before_rf) 2364 return; 2365 anaparm |= RTW_ANAPARM_RFPOW_PHILIPS_OFF; 2366 anaparm |= RTW_ANAPARM_TXDACOFF; 2367 break; 2368 case RTW_SLEEP: 2369 if (!before_rf) 2370 return; 2371 anaparm |= RTW_ANAPARM_RFPOW_PHILIPS_SLEEP; 2372 anaparm |= RTW_ANAPARM_TXDACOFF; 2373 break; 2374 case RTW_ON: 2375 if (!before_rf) 2376 return; 2377 if (digphy) { 2378 anaparm |= RTW_ANAPARM_RFPOW_DIG_PHILIPS_ON; 2379 /* XXX guess */ 2380 anaparm |= RTW_ANAPARM_TXDACOFF; 2381 } else 2382 anaparm |= RTW_ANAPARM_RFPOW_ANA_PHILIPS_ON; 2383 break; 2384 } 2385 RTW_DPRINTF(RTW_DEBUG_PWR, 2386 ("%s: power state %s, %s RF, reg[ANAPARM] <- %08x\n", 2387 __func__, rtw_pwrstate_string(power), 2388 (before_rf) ? "before" : "after", anaparm)); 2389 2390 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 2391 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 2392 } 2393 2394 static void 2395 rtw_pwrstate0(struct rtw_softc *sc, enum rtw_pwrstate power, int before_rf, 2396 int digphy) 2397 { 2398 struct rtw_regs *regs = &sc->sc_regs; 2399 2400 rtw_set_access(regs, RTW_ACCESS_ANAPARM); 2401 2402 (*sc->sc_pwrstate_cb)(regs, power, before_rf, digphy); 2403 2404 rtw_set_access(regs, RTW_ACCESS_NONE); 2405 2406 return; 2407 } 2408 2409 static int 2410 rtw_pwrstate(struct rtw_softc *sc, enum rtw_pwrstate power) 2411 { 2412 int rc; 2413 2414 RTW_DPRINTF(RTW_DEBUG_PWR, 2415 ("%s: %s->%s\n", __func__, 2416 rtw_pwrstate_string(sc->sc_pwrstate), rtw_pwrstate_string(power))); 2417 2418 if (sc->sc_pwrstate == power) 2419 return 0; 2420 2421 rtw_pwrstate0(sc, power, 1, sc->sc_flags & RTW_F_DIGPHY); 2422 rc = rtw_rf_pwrstate(sc->sc_rf, power); 2423 rtw_pwrstate0(sc, power, 0, sc->sc_flags & RTW_F_DIGPHY); 2424 2425 switch (power) { 2426 case RTW_ON: 2427 /* TBD set LEDs */ 2428 break; 2429 case RTW_SLEEP: 2430 /* TBD */ 2431 break; 2432 case RTW_OFF: 2433 /* TBD */ 2434 break; 2435 } 2436 if (rc == 0) 2437 sc->sc_pwrstate = power; 2438 else 2439 sc->sc_pwrstate = RTW_OFF; 2440 return rc; 2441 } 2442 2443 static int 2444 rtw_tune(struct rtw_softc *sc) 2445 { 2446 struct ieee80211com *ic = &sc->sc_ic; 2447 struct rtw_tx_radiotap_header *rt = &sc->sc_txtap; 2448 struct rtw_rx_radiotap_header *rr = &sc->sc_rxtap; 2449 u_int chan; 2450 int rc; 2451 int antdiv = sc->sc_flags & RTW_F_ANTDIV, 2452 dflantb = sc->sc_flags & RTW_F_DFLANTB; 2453 2454 chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 2455 KASSERT(chan != IEEE80211_CHAN_ANY); 2456 2457 rt->rt_chan_freq = htole16(ic->ic_curchan->ic_freq); 2458 rt->rt_chan_flags = htole16(ic->ic_curchan->ic_flags); 2459 2460 rr->rr_chan_freq = htole16(ic->ic_curchan->ic_freq); 2461 rr->rr_chan_flags = htole16(ic->ic_curchan->ic_flags); 2462 2463 if (chan == sc->sc_cur_chan) { 2464 RTW_DPRINTF(RTW_DEBUG_TUNE, 2465 ("%s: already tuned chan #%d\n", __func__, chan)); 2466 return 0; 2467 } 2468 2469 rtw_suspend_ticks(sc); 2470 2471 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 2472 2473 /* TBD wait for Tx to complete */ 2474 2475 KASSERT(device_has_power(sc->sc_dev)); 2476 2477 if ((rc = rtw_phy_init(&sc->sc_regs, sc->sc_rf, 2478 rtw_chan2txpower(&sc->sc_srom, ic, ic->ic_curchan), sc->sc_csthr, 2479 ic->ic_curchan->ic_freq, antdiv, dflantb, RTW_ON)) != 0) { 2480 /* XXX condition on powersaving */ 2481 aprint_error_dev(sc->sc_dev, "phy init failed\n"); 2482 } 2483 2484 sc->sc_cur_chan = chan; 2485 2486 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 2487 2488 rtw_resume_ticks(sc); 2489 2490 return rc; 2491 } 2492 2493 bool 2494 rtw_suspend(device_t self PMF_FN_ARGS) 2495 { 2496 int rc; 2497 struct rtw_softc *sc = device_private(self); 2498 2499 sc->sc_flags &= ~RTW_F_DK_VALID; 2500 2501 if (!device_has_power(self)) 2502 return false; 2503 2504 /* turn off PHY */ 2505 if ((rc = rtw_pwrstate(sc, RTW_OFF)) != 0) { 2506 aprint_error_dev(self, "failed to turn off PHY (%d)\n", rc); 2507 return false; 2508 } 2509 2510 rtw_disable_interrupts(&sc->sc_regs); 2511 2512 return true; 2513 } 2514 2515 bool 2516 rtw_resume(device_t self PMF_FN_ARGS) 2517 { 2518 struct rtw_softc *sc = device_private(self); 2519 2520 /* Power may have been removed, resetting WEP keys. 2521 */ 2522 sc->sc_flags &= ~RTW_F_DK_VALID; 2523 rtw_enable_interrupts(sc); 2524 2525 return true; 2526 } 2527 2528 static void 2529 rtw_transmit_config(struct rtw_regs *regs) 2530 { 2531 uint32_t tcr; 2532 2533 tcr = RTW_READ(regs, RTW_TCR); 2534 2535 tcr |= RTW_TCR_CWMIN; 2536 tcr &= ~RTW_TCR_MXDMA_MASK; 2537 tcr |= RTW_TCR_MXDMA_256; 2538 tcr |= RTW_TCR_SAT; /* send ACK as fast as possible */ 2539 tcr &= ~RTW_TCR_LBK_MASK; 2540 tcr |= RTW_TCR_LBK_NORMAL; /* normal operating mode */ 2541 2542 /* set short/long retry limits */ 2543 tcr &= ~(RTW_TCR_SRL_MASK|RTW_TCR_LRL_MASK); 2544 tcr |= __SHIFTIN(4, RTW_TCR_SRL_MASK) | __SHIFTIN(4, RTW_TCR_LRL_MASK); 2545 2546 tcr &= ~RTW_TCR_CRC; /* NIC appends CRC32 */ 2547 2548 RTW_WRITE(regs, RTW_TCR, tcr); 2549 RTW_SYNC(regs, RTW_TCR, RTW_TCR); 2550 } 2551 2552 static void 2553 rtw_disable_interrupts(struct rtw_regs *regs) 2554 { 2555 RTW_WRITE16(regs, RTW_IMR, 0); 2556 RTW_WBW(regs, RTW_IMR, RTW_ISR); 2557 RTW_WRITE16(regs, RTW_ISR, 0xffff); 2558 RTW_SYNC(regs, RTW_IMR, RTW_ISR); 2559 } 2560 2561 static void 2562 rtw_enable_interrupts(struct rtw_softc *sc) 2563 { 2564 struct rtw_regs *regs = &sc->sc_regs; 2565 2566 sc->sc_inten = RTW_INTR_RX|RTW_INTR_TX|RTW_INTR_BEACON|RTW_INTR_ATIMINT; 2567 sc->sc_inten |= RTW_INTR_IOERROR|RTW_INTR_TIMEOUT; 2568 2569 RTW_WRITE16(regs, RTW_IMR, sc->sc_inten); 2570 RTW_WBW(regs, RTW_IMR, RTW_ISR); 2571 RTW_WRITE16(regs, RTW_ISR, 0xffff); 2572 RTW_SYNC(regs, RTW_IMR, RTW_ISR); 2573 2574 /* XXX necessary? */ 2575 if (sc->sc_intr_ack != NULL) 2576 (*sc->sc_intr_ack)(regs); 2577 } 2578 2579 static void 2580 rtw_set_nettype(struct rtw_softc *sc, enum ieee80211_opmode opmode) 2581 { 2582 uint8_t msr; 2583 2584 /* I'm guessing that MSR is protected as CONFIG[0123] are. */ 2585 rtw_set_access(&sc->sc_regs, RTW_ACCESS_CONFIG); 2586 2587 msr = RTW_READ8(&sc->sc_regs, RTW_MSR) & ~RTW_MSR_NETYPE_MASK; 2588 2589 switch (opmode) { 2590 case IEEE80211_M_AHDEMO: 2591 case IEEE80211_M_IBSS: 2592 msr |= RTW_MSR_NETYPE_ADHOC_OK; 2593 break; 2594 case IEEE80211_M_HOSTAP: 2595 msr |= RTW_MSR_NETYPE_AP_OK; 2596 break; 2597 case IEEE80211_M_MONITOR: 2598 /* XXX */ 2599 msr |= RTW_MSR_NETYPE_NOLINK; 2600 break; 2601 case IEEE80211_M_STA: 2602 msr |= RTW_MSR_NETYPE_INFRA_OK; 2603 break; 2604 } 2605 RTW_WRITE8(&sc->sc_regs, RTW_MSR, msr); 2606 2607 rtw_set_access(&sc->sc_regs, RTW_ACCESS_NONE); 2608 } 2609 2610 #define rtw_calchash(addr) \ 2611 (ether_crc32_be((addr), IEEE80211_ADDR_LEN) >> 26) 2612 2613 static void 2614 rtw_pktfilt_load(struct rtw_softc *sc) 2615 { 2616 struct rtw_regs *regs = &sc->sc_regs; 2617 struct ieee80211com *ic = &sc->sc_ic; 2618 struct ethercom *ec = &sc->sc_ec; 2619 struct ifnet *ifp = &sc->sc_if; 2620 int hash; 2621 uint32_t hashes[2] = { 0, 0 }; 2622 struct ether_multi *enm; 2623 struct ether_multistep step; 2624 2625 /* XXX might be necessary to stop Rx/Tx engines while setting filters */ 2626 2627 sc->sc_rcr &= ~RTW_RCR_PKTFILTER_MASK; 2628 sc->sc_rcr &= ~(RTW_RCR_MXDMA_MASK | RTW_RCR_RXFTH_MASK); 2629 2630 sc->sc_rcr |= RTW_RCR_PKTFILTER_DEFAULT; 2631 /* MAC auto-reset PHY (huh?) */ 2632 sc->sc_rcr |= RTW_RCR_ENMARP; 2633 /* DMA whole Rx packets, only. Set Tx DMA burst size to 1024 bytes. */ 2634 sc->sc_rcr |= RTW_RCR_MXDMA_1024 | RTW_RCR_RXFTH_WHOLE; 2635 2636 switch (ic->ic_opmode) { 2637 case IEEE80211_M_MONITOR: 2638 sc->sc_rcr |= RTW_RCR_MONITOR; 2639 break; 2640 case IEEE80211_M_AHDEMO: 2641 case IEEE80211_M_IBSS: 2642 /* receive broadcasts in our BSS */ 2643 sc->sc_rcr |= RTW_RCR_ADD3; 2644 break; 2645 default: 2646 break; 2647 } 2648 2649 ifp->if_flags &= ~IFF_ALLMULTI; 2650 2651 /* 2652 * Program the 64-bit multicast hash filter. 2653 */ 2654 ETHER_FIRST_MULTI(step, ec, enm); 2655 while (enm != NULL) { 2656 /* XXX */ 2657 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 2658 ETHER_ADDR_LEN) != 0) { 2659 ifp->if_flags |= IFF_ALLMULTI; 2660 break; 2661 } 2662 2663 hash = rtw_calchash(enm->enm_addrlo); 2664 hashes[hash >> 5] |= (1 << (hash & 0x1f)); 2665 ETHER_NEXT_MULTI(step, enm); 2666 } 2667 2668 /* XXX accept all broadcast if scanning */ 2669 if ((ifp->if_flags & IFF_BROADCAST) != 0) 2670 sc->sc_rcr |= RTW_RCR_AB; /* accept all broadcast */ 2671 2672 if (ifp->if_flags & IFF_PROMISC) { 2673 sc->sc_rcr |= RTW_RCR_AB; /* accept all broadcast */ 2674 sc->sc_rcr |= RTW_RCR_ACRC32; /* accept frames failing CRC */ 2675 sc->sc_rcr |= RTW_RCR_AICV; /* accept frames failing ICV */ 2676 ifp->if_flags |= IFF_ALLMULTI; 2677 } 2678 2679 if (ifp->if_flags & IFF_ALLMULTI) 2680 hashes[0] = hashes[1] = 0xffffffff; 2681 2682 if ((hashes[0] | hashes[1]) != 0) 2683 sc->sc_rcr |= RTW_RCR_AM; /* accept multicast */ 2684 2685 RTW_WRITE(regs, RTW_MAR0, hashes[0]); 2686 RTW_WRITE(regs, RTW_MAR1, hashes[1]); 2687 RTW_WRITE(regs, RTW_RCR, sc->sc_rcr); 2688 RTW_SYNC(regs, RTW_MAR0, RTW_RCR); /* RTW_MAR0 < RTW_MAR1 < RTW_RCR */ 2689 2690 DPRINTF(sc, RTW_DEBUG_PKTFILT, 2691 ("%s: RTW_MAR0 %08x RTW_MAR1 %08x RTW_RCR %08x\n", 2692 device_xname(sc->sc_dev), RTW_READ(regs, RTW_MAR0), 2693 RTW_READ(regs, RTW_MAR1), RTW_READ(regs, RTW_RCR))); 2694 } 2695 2696 static struct mbuf * 2697 rtw_beacon_alloc(struct rtw_softc *sc, struct ieee80211_node *ni) 2698 { 2699 struct ieee80211com *ic = &sc->sc_ic; 2700 struct mbuf *m; 2701 struct ieee80211_beacon_offsets boff; 2702 2703 if ((m = ieee80211_beacon_alloc(ic, ni, &boff)) != NULL) { 2704 RTW_DPRINTF(RTW_DEBUG_BEACON, 2705 ("%s: m %p len %u\n", __func__, m, m->m_len)); 2706 } 2707 return m; 2708 } 2709 2710 /* Must be called at splnet. */ 2711 static int 2712 rtw_init(struct ifnet *ifp) 2713 { 2714 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 2715 struct ieee80211com *ic = &sc->sc_ic; 2716 struct rtw_regs *regs = &sc->sc_regs; 2717 int rc; 2718 2719 if (device_is_active(sc->sc_dev)) { 2720 /* Cancel pending I/O and reset. */ 2721 rtw_stop(ifp, 0); 2722 } else if (!pmf_device_resume_self(sc->sc_dev)) 2723 return 0; /* XXX error? */ 2724 2725 DPRINTF(sc, RTW_DEBUG_TUNE, ("%s: channel %d freq %d flags 0x%04x\n", 2726 __func__, ieee80211_chan2ieee(ic, ic->ic_curchan), 2727 ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags)); 2728 2729 if ((rc = rtw_pwrstate(sc, RTW_OFF)) != 0) 2730 goto out; 2731 2732 if ((rc = rtw_swring_setup(sc)) != 0) 2733 goto out; 2734 2735 rtw_transmit_config(regs); 2736 2737 rtw_set_access(regs, RTW_ACCESS_CONFIG); 2738 2739 RTW_WRITE8(regs, RTW_MSR, 0x0); /* no link */ 2740 RTW_WBW(regs, RTW_MSR, RTW_BRSR); 2741 2742 /* long PLCP header, 1Mb/2Mb basic rate */ 2743 RTW_WRITE16(regs, RTW_BRSR, RTW_BRSR_MBR8180_2MBPS); 2744 RTW_SYNC(regs, RTW_BRSR, RTW_BRSR); 2745 2746 rtw_set_access(regs, RTW_ACCESS_ANAPARM); 2747 rtw_set_access(regs, RTW_ACCESS_NONE); 2748 2749 /* XXX from reference sources */ 2750 RTW_WRITE(regs, RTW_FEMR, 0xffff); 2751 RTW_SYNC(regs, RTW_FEMR, RTW_FEMR); 2752 2753 rtw_set_rfprog(regs, sc->sc_rfchipid, sc->sc_dev); 2754 2755 RTW_WRITE8(regs, RTW_PHYDELAY, sc->sc_phydelay); 2756 /* from Linux driver */ 2757 RTW_WRITE8(regs, RTW_CRCOUNT, RTW_CRCOUNT_MAGIC); 2758 2759 RTW_SYNC(regs, RTW_PHYDELAY, RTW_CRCOUNT); 2760 2761 rtw_enable_interrupts(sc); 2762 2763 rtw_pktfilt_load(sc); 2764 2765 rtw_hwring_setup(sc); 2766 2767 rtw_wep_setkeys(sc, ic->ic_nw_keys, ic->ic_def_txkey); 2768 2769 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 2770 2771 ifp->if_flags |= IFF_RUNNING; 2772 ic->ic_state = IEEE80211_S_INIT; 2773 2774 RTW_WRITE16(regs, RTW_BSSID16, 0x0); 2775 RTW_WRITE(regs, RTW_BSSID32, 0x0); 2776 2777 rtw_resume_ticks(sc); 2778 2779 rtw_set_nettype(sc, IEEE80211_M_MONITOR); 2780 2781 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2782 return ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2783 else 2784 return ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2785 2786 out: 2787 aprint_error_dev(sc->sc_dev, "interface not running\n"); 2788 return rc; 2789 } 2790 2791 static inline void 2792 rtw_led_init(struct rtw_regs *regs) 2793 { 2794 uint8_t cfg0, cfg1; 2795 2796 rtw_set_access(regs, RTW_ACCESS_CONFIG); 2797 2798 cfg0 = RTW_READ8(regs, RTW_CONFIG0); 2799 cfg0 |= RTW_CONFIG0_LEDGPOEN; 2800 RTW_WRITE8(regs, RTW_CONFIG0, cfg0); 2801 2802 cfg1 = RTW_READ8(regs, RTW_CONFIG1); 2803 RTW_DPRINTF(RTW_DEBUG_LED, 2804 ("%s: read %" PRIx8 " from reg[CONFIG1]\n", __func__, cfg1)); 2805 2806 cfg1 &= ~RTW_CONFIG1_LEDS_MASK; 2807 cfg1 |= RTW_CONFIG1_LEDS_TX_RX; 2808 RTW_WRITE8(regs, RTW_CONFIG1, cfg1); 2809 2810 rtw_set_access(regs, RTW_ACCESS_NONE); 2811 } 2812 2813 /* 2814 * IEEE80211_S_INIT: LED1 off 2815 * 2816 * IEEE80211_S_AUTH, 2817 * IEEE80211_S_ASSOC, 2818 * IEEE80211_S_SCAN: LED1 blinks @ 1 Hz, blinks at 5Hz for tx/rx 2819 * 2820 * IEEE80211_S_RUN: LED1 on, blinks @ 5Hz for tx/rx 2821 */ 2822 static void 2823 rtw_led_newstate(struct rtw_softc *sc, enum ieee80211_state nstate) 2824 { 2825 struct rtw_led_state *ls; 2826 2827 ls = &sc->sc_led_state; 2828 2829 switch (nstate) { 2830 case IEEE80211_S_INIT: 2831 rtw_led_init(&sc->sc_regs); 2832 aprint_debug_dev(sc->sc_dev, "stopping blink\n"); 2833 callout_stop(&ls->ls_slow_ch); 2834 callout_stop(&ls->ls_fast_ch); 2835 ls->ls_slowblink = 0; 2836 ls->ls_actblink = 0; 2837 ls->ls_default = 0; 2838 break; 2839 case IEEE80211_S_SCAN: 2840 aprint_debug_dev(sc->sc_dev, "scheduling blink\n"); 2841 callout_schedule(&ls->ls_slow_ch, RTW_LED_SLOW_TICKS); 2842 callout_schedule(&ls->ls_fast_ch, RTW_LED_FAST_TICKS); 2843 /*FALLTHROUGH*/ 2844 case IEEE80211_S_AUTH: 2845 case IEEE80211_S_ASSOC: 2846 ls->ls_default = RTW_LED1; 2847 ls->ls_actblink = RTW_LED1; 2848 ls->ls_slowblink = RTW_LED1; 2849 break; 2850 case IEEE80211_S_RUN: 2851 ls->ls_slowblink = 0; 2852 break; 2853 } 2854 rtw_led_set(ls, &sc->sc_regs, sc->sc_hwverid); 2855 } 2856 2857 static void 2858 rtw_led_set(struct rtw_led_state *ls, struct rtw_regs *regs, int hwverid) 2859 { 2860 uint8_t led_condition; 2861 bus_size_t ofs; 2862 uint8_t mask, newval, val; 2863 2864 led_condition = ls->ls_default; 2865 2866 if (ls->ls_state & RTW_LED_S_SLOW) 2867 led_condition ^= ls->ls_slowblink; 2868 if (ls->ls_state & (RTW_LED_S_RX|RTW_LED_S_TX)) 2869 led_condition ^= ls->ls_actblink; 2870 2871 RTW_DPRINTF(RTW_DEBUG_LED, 2872 ("%s: LED condition %" PRIx8 "\n", __func__, led_condition)); 2873 2874 switch (hwverid) { 2875 default: 2876 case 'F': 2877 ofs = RTW_PSR; 2878 newval = mask = RTW_PSR_LEDGPO0 | RTW_PSR_LEDGPO1; 2879 if (led_condition & RTW_LED0) 2880 newval &= ~RTW_PSR_LEDGPO0; 2881 if (led_condition & RTW_LED1) 2882 newval &= ~RTW_PSR_LEDGPO1; 2883 break; 2884 case 'D': 2885 ofs = RTW_9346CR; 2886 mask = RTW_9346CR_EEM_MASK | RTW_9346CR_EEDI | RTW_9346CR_EECS; 2887 newval = RTW_9346CR_EEM_PROGRAM; 2888 if (led_condition & RTW_LED0) 2889 newval |= RTW_9346CR_EEDI; 2890 if (led_condition & RTW_LED1) 2891 newval |= RTW_9346CR_EECS; 2892 break; 2893 } 2894 val = RTW_READ8(regs, ofs); 2895 RTW_DPRINTF(RTW_DEBUG_LED, 2896 ("%s: read %" PRIx8 " from reg[%#02" PRIxPTR "]\n", __func__, val, 2897 (uintptr_t)ofs)); 2898 val &= ~mask; 2899 val |= newval; 2900 RTW_WRITE8(regs, ofs, val); 2901 RTW_DPRINTF(RTW_DEBUG_LED, 2902 ("%s: wrote %" PRIx8 " to reg[%#02" PRIxPTR "]\n", __func__, val, 2903 (uintptr_t)ofs)); 2904 RTW_SYNC(regs, ofs, ofs); 2905 } 2906 2907 static void 2908 rtw_led_fastblink(void *arg) 2909 { 2910 int ostate, s; 2911 struct rtw_softc *sc = (struct rtw_softc *)arg; 2912 struct rtw_led_state *ls = &sc->sc_led_state; 2913 2914 s = splnet(); 2915 ostate = ls->ls_state; 2916 ls->ls_state ^= ls->ls_event; 2917 2918 if ((ls->ls_event & RTW_LED_S_TX) == 0) 2919 ls->ls_state &= ~RTW_LED_S_TX; 2920 2921 if ((ls->ls_event & RTW_LED_S_RX) == 0) 2922 ls->ls_state &= ~RTW_LED_S_RX; 2923 2924 ls->ls_event = 0; 2925 2926 if (ostate != ls->ls_state) 2927 rtw_led_set(ls, &sc->sc_regs, sc->sc_hwverid); 2928 splx(s); 2929 2930 aprint_debug_dev(sc->sc_dev, "scheduling fast blink\n"); 2931 callout_schedule(&ls->ls_fast_ch, RTW_LED_FAST_TICKS); 2932 } 2933 2934 static void 2935 rtw_led_slowblink(void *arg) 2936 { 2937 int s; 2938 struct rtw_softc *sc = (struct rtw_softc *)arg; 2939 struct rtw_led_state *ls = &sc->sc_led_state; 2940 2941 s = splnet(); 2942 ls->ls_state ^= RTW_LED_S_SLOW; 2943 rtw_led_set(ls, &sc->sc_regs, sc->sc_hwverid); 2944 splx(s); 2945 aprint_debug_dev(sc->sc_dev, "scheduling slow blink\n"); 2946 callout_schedule(&ls->ls_slow_ch, RTW_LED_SLOW_TICKS); 2947 } 2948 2949 static void 2950 rtw_led_detach(struct rtw_led_state *ls) 2951 { 2952 callout_destroy(&ls->ls_fast_ch); 2953 callout_destroy(&ls->ls_slow_ch); 2954 } 2955 2956 static void 2957 rtw_led_attach(struct rtw_led_state *ls, void *arg) 2958 { 2959 callout_init(&ls->ls_fast_ch, 0); 2960 callout_init(&ls->ls_slow_ch, 0); 2961 callout_setfunc(&ls->ls_fast_ch, rtw_led_fastblink, arg); 2962 callout_setfunc(&ls->ls_slow_ch, rtw_led_slowblink, arg); 2963 } 2964 2965 static int 2966 rtw_ioctl(struct ifnet *ifp, u_long cmd, void *data) 2967 { 2968 int rc = 0, s; 2969 struct rtw_softc *sc = ifp->if_softc; 2970 2971 s = splnet(); 2972 if (cmd == SIOCSIFFLAGS) { 2973 if ((ifp->if_flags & IFF_UP) != 0) { 2974 if (device_is_active(sc->sc_dev)) 2975 rtw_pktfilt_load(sc); 2976 else 2977 rc = rtw_init(ifp); 2978 RTW_PRINT_REGS(&sc->sc_regs, ifp->if_xname, __func__); 2979 } else if (device_is_active(sc->sc_dev)) { 2980 RTW_PRINT_REGS(&sc->sc_regs, ifp->if_xname, __func__); 2981 rtw_stop(ifp, 1); 2982 } 2983 } else if ((rc = ieee80211_ioctl(&sc->sc_ic, cmd, data)) != ENETRESET) 2984 ; /* nothing to do */ 2985 else if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) { 2986 /* reload packet filter if running */ 2987 if (ifp->if_flags & IFF_RUNNING) 2988 rtw_pktfilt_load(sc); 2989 rc = 0; 2990 } else if ((ifp->if_flags & IFF_UP) != 0) 2991 rc = rtw_init(ifp); 2992 else 2993 rc = 0; 2994 splx(s); 2995 return rc; 2996 } 2997 2998 /* Select a transmit ring with at least one h/w and s/w descriptor free. 2999 * Return 0 on success, -1 on failure. 3000 */ 3001 static inline int 3002 rtw_txring_choose(struct rtw_softc *sc, struct rtw_txsoft_blk **tsbp, 3003 struct rtw_txdesc_blk **tdbp, int pri) 3004 { 3005 struct rtw_txsoft_blk *tsb; 3006 struct rtw_txdesc_blk *tdb; 3007 3008 KASSERT(pri >= 0 && pri < RTW_NTXPRI); 3009 3010 tsb = &sc->sc_txsoft_blk[pri]; 3011 tdb = &sc->sc_txdesc_blk[pri]; 3012 3013 if (SIMPLEQ_EMPTY(&tsb->tsb_freeq) || tdb->tdb_nfree == 0) { 3014 if (tsb->tsb_tx_timer == 0) 3015 tsb->tsb_tx_timer = 5; 3016 *tsbp = NULL; 3017 *tdbp = NULL; 3018 return -1; 3019 } 3020 *tsbp = tsb; 3021 *tdbp = tdb; 3022 return 0; 3023 } 3024 3025 static inline struct mbuf * 3026 rtw_80211_dequeue(struct rtw_softc *sc, struct ifqueue *ifq, int pri, 3027 struct rtw_txsoft_blk **tsbp, struct rtw_txdesc_blk **tdbp, 3028 struct ieee80211_node **nip, short *if_flagsp) 3029 { 3030 struct mbuf *m; 3031 3032 if (IF_IS_EMPTY(ifq)) 3033 return NULL; 3034 if (rtw_txring_choose(sc, tsbp, tdbp, pri) == -1) { 3035 DPRINTF(sc, RTW_DEBUG_XMIT_RSRC, ("%s: no ring %d descriptor\n", 3036 __func__, pri)); 3037 *if_flagsp |= IFF_OACTIVE; 3038 sc->sc_if.if_timer = 1; 3039 return NULL; 3040 } 3041 IF_DEQUEUE(ifq, m); 3042 *nip = (struct ieee80211_node *)m->m_pkthdr.rcvif; 3043 m->m_pkthdr.rcvif = NULL; 3044 KASSERT(*nip != NULL); 3045 return m; 3046 } 3047 3048 /* Point *mp at the next 802.11 frame to transmit. Point *tsbp 3049 * at the driver's selection of transmit control block for the packet. 3050 */ 3051 static inline int 3052 rtw_dequeue(struct ifnet *ifp, struct rtw_txsoft_blk **tsbp, 3053 struct rtw_txdesc_blk **tdbp, struct mbuf **mp, 3054 struct ieee80211_node **nip) 3055 { 3056 int pri; 3057 struct ether_header *eh; 3058 struct mbuf *m0; 3059 struct rtw_softc *sc; 3060 short *if_flagsp; 3061 3062 *mp = NULL; 3063 3064 sc = (struct rtw_softc *)ifp->if_softc; 3065 3066 DPRINTF(sc, RTW_DEBUG_XMIT, 3067 ("%s: enter %s\n", device_xname(sc->sc_dev), __func__)); 3068 3069 if_flagsp = &ifp->if_flags; 3070 3071 if (sc->sc_ic.ic_state == IEEE80211_S_RUN && 3072 (*mp = rtw_80211_dequeue(sc, &sc->sc_beaconq, RTW_TXPRIBCN, tsbp, 3073 tdbp, nip, if_flagsp)) != NULL) { 3074 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: dequeue beacon frame\n", 3075 __func__)); 3076 return 0; 3077 } 3078 3079 if ((*mp = rtw_80211_dequeue(sc, &sc->sc_ic.ic_mgtq, RTW_TXPRIMD, tsbp, 3080 tdbp, nip, if_flagsp)) != NULL) { 3081 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: dequeue mgt frame\n", 3082 __func__)); 3083 return 0; 3084 } 3085 3086 if (sc->sc_ic.ic_state != IEEE80211_S_RUN) { 3087 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: not running\n", __func__)); 3088 return 0; 3089 } 3090 3091 IFQ_POLL(&ifp->if_snd, m0); 3092 if (m0 == NULL) { 3093 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: no frame ready\n", 3094 __func__)); 3095 return 0; 3096 } 3097 3098 pri = ((m0->m_flags & M_PWR_SAV) != 0) ? RTW_TXPRIHI : RTW_TXPRIMD; 3099 3100 if (rtw_txring_choose(sc, tsbp, tdbp, pri) == -1) { 3101 DPRINTF(sc, RTW_DEBUG_XMIT_RSRC, ("%s: no ring %d descriptor\n", 3102 __func__, pri)); 3103 *if_flagsp |= IFF_OACTIVE; 3104 sc->sc_if.if_timer = 1; 3105 return 0; 3106 } 3107 3108 IFQ_DEQUEUE(&ifp->if_snd, m0); 3109 if (m0 == NULL) { 3110 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: no frame ready\n", 3111 __func__)); 3112 return 0; 3113 } 3114 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: dequeue data frame\n", __func__)); 3115 ifp->if_opackets++; 3116 #if NBPFILTER > 0 3117 if (ifp->if_bpf) 3118 bpf_mtap(ifp->if_bpf, m0); 3119 #endif 3120 eh = mtod(m0, struct ether_header *); 3121 *nip = ieee80211_find_txnode(&sc->sc_ic, eh->ether_dhost); 3122 if (*nip == NULL) { 3123 /* NB: ieee80211_find_txnode does stat+msg */ 3124 m_freem(m0); 3125 return -1; 3126 } 3127 if ((m0 = ieee80211_encap(&sc->sc_ic, m0, *nip)) == NULL) { 3128 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: encap error\n", __func__)); 3129 ifp->if_oerrors++; 3130 return -1; 3131 } 3132 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: leave\n", __func__)); 3133 *mp = m0; 3134 return 0; 3135 } 3136 3137 static int 3138 rtw_seg_too_short(bus_dmamap_t dmamap) 3139 { 3140 int i; 3141 for (i = 0; i < dmamap->dm_nsegs; i++) { 3142 if (dmamap->dm_segs[i].ds_len < 4) 3143 return 1; 3144 } 3145 return 0; 3146 } 3147 3148 /* TBD factor with atw_start */ 3149 static struct mbuf * 3150 rtw_dmamap_load_txbuf(bus_dma_tag_t dmat, bus_dmamap_t dmam, struct mbuf *chain, 3151 u_int ndescfree, device_t dev) 3152 { 3153 int first, rc; 3154 struct mbuf *m, *m0; 3155 3156 m0 = chain; 3157 3158 /* 3159 * Load the DMA map. Copy and try (once) again if the packet 3160 * didn't fit in the alloted number of segments. 3161 */ 3162 for (first = 1; 3163 ((rc = bus_dmamap_load_mbuf(dmat, dmam, m0, 3164 BUS_DMA_WRITE|BUS_DMA_NOWAIT)) != 0 || 3165 dmam->dm_nsegs > ndescfree || rtw_seg_too_short(dmam)) && first; 3166 first = 0) { 3167 if (rc == 0) { 3168 #ifdef RTW_DIAGxxx 3169 if (rtw_seg_too_short(dmam)) { 3170 printf("%s: short segment, mbuf lengths:", __func__); 3171 for (m = m0; m; m = m->m_next) 3172 printf(" %d", m->m_len); 3173 printf("\n"); 3174 } 3175 #endif 3176 bus_dmamap_unload(dmat, dmam); 3177 } 3178 MGETHDR(m, M_DONTWAIT, MT_DATA); 3179 if (m == NULL) { 3180 aprint_error_dev(dev, "unable to allocate Tx mbuf\n"); 3181 break; 3182 } 3183 if (m0->m_pkthdr.len > MHLEN) { 3184 MCLGET(m, M_DONTWAIT); 3185 if ((m->m_flags & M_EXT) == 0) { 3186 aprint_error_dev(dev, 3187 "cannot allocate Tx cluster\n"); 3188 m_freem(m); 3189 break; 3190 } 3191 } 3192 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, void *)); 3193 m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; 3194 m_freem(m0); 3195 m0 = m; 3196 m = NULL; 3197 } 3198 if (rc != 0) { 3199 aprint_error_dev(dev, "cannot load Tx buffer, rc = %d\n", rc); 3200 m_freem(m0); 3201 return NULL; 3202 } else if (rtw_seg_too_short(dmam)) { 3203 aprint_error_dev(dev, 3204 "cannot load Tx buffer, segment too short\n"); 3205 bus_dmamap_unload(dmat, dmam); 3206 m_freem(m0); 3207 return NULL; 3208 } else if (dmam->dm_nsegs > ndescfree) { 3209 aprint_error_dev(dev, "too many tx segments\n"); 3210 bus_dmamap_unload(dmat, dmam); 3211 m_freem(m0); 3212 return NULL; 3213 } 3214 return m0; 3215 } 3216 3217 #ifdef RTW_DEBUG 3218 static void 3219 rtw_print_txdesc(struct rtw_softc *sc, const char *action, 3220 struct rtw_txsoft *ts, struct rtw_txdesc_blk *tdb, int desc) 3221 { 3222 struct rtw_txdesc *td = &tdb->tdb_desc[desc]; 3223 DPRINTF(sc, RTW_DEBUG_XMIT_DESC, ("%s: %p %s txdesc[%d] next %#08x " 3224 "buf %#08x ctl0 %#08x ctl1 %#08x len %#08x\n", 3225 device_xname(sc->sc_dev), ts, action, desc, 3226 le32toh(td->td_buf), le32toh(td->td_next), 3227 le32toh(td->td_ctl0), le32toh(td->td_ctl1), 3228 le32toh(td->td_len))); 3229 } 3230 #endif /* RTW_DEBUG */ 3231 3232 static void 3233 rtw_start(struct ifnet *ifp) 3234 { 3235 int desc, i, lastdesc, npkt, rate; 3236 uint32_t proto_ctl0, ctl0, ctl1; 3237 bus_dmamap_t dmamap; 3238 struct ieee80211com *ic; 3239 struct ieee80211_duration *d0; 3240 struct ieee80211_frame_min *wh; 3241 struct ieee80211_node *ni = NULL; /* XXX: GCC */ 3242 struct mbuf *m0; 3243 struct rtw_softc *sc; 3244 struct rtw_txsoft_blk *tsb = NULL; /* XXX: GCC */ 3245 struct rtw_txdesc_blk *tdb = NULL; /* XXX: GCC */ 3246 struct rtw_txsoft *ts; 3247 struct rtw_txdesc *td; 3248 struct ieee80211_key *k; 3249 3250 sc = (struct rtw_softc *)ifp->if_softc; 3251 ic = &sc->sc_ic; 3252 3253 DPRINTF(sc, RTW_DEBUG_XMIT, 3254 ("%s: enter %s\n", device_xname(sc->sc_dev), __func__)); 3255 3256 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 3257 goto out; 3258 3259 /* XXX do real rate control */ 3260 proto_ctl0 = RTW_TXCTL0_RTSRATE_1MBPS; 3261 3262 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0) 3263 proto_ctl0 |= RTW_TXCTL0_SPLCP; 3264 3265 for (;;) { 3266 if (rtw_dequeue(ifp, &tsb, &tdb, &m0, &ni) == -1) 3267 continue; 3268 if (m0 == NULL) 3269 break; 3270 3271 wh = mtod(m0, struct ieee80211_frame_min *); 3272 3273 if ((wh->i_fc[1] & IEEE80211_FC1_WEP) != 0 && 3274 (k = ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 3275 m_freem(m0); 3276 break; 3277 } else 3278 k = NULL; 3279 3280 ts = SIMPLEQ_FIRST(&tsb->tsb_freeq); 3281 3282 dmamap = ts->ts_dmamap; 3283 3284 m0 = rtw_dmamap_load_txbuf(sc->sc_dmat, dmamap, m0, 3285 tdb->tdb_nfree, sc->sc_dev); 3286 3287 if (m0 == NULL || dmamap->dm_nsegs == 0) { 3288 DPRINTF(sc, RTW_DEBUG_XMIT, 3289 ("%s: fail dmamap load\n", __func__)); 3290 goto post_dequeue_err; 3291 } 3292 3293 /* Note well: rtw_dmamap_load_txbuf may have created 3294 * a new chain, so we must find the header once 3295 * more. 3296 */ 3297 wh = mtod(m0, struct ieee80211_frame_min *); 3298 3299 /* XXX do real rate control */ 3300 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 3301 IEEE80211_FC0_TYPE_MGT) 3302 rate = 2; 3303 else 3304 rate = MAX(2, ieee80211_get_rate(ni)); 3305 3306 #ifdef RTW_DEBUG 3307 if ((ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == 3308 (IFF_DEBUG|IFF_LINK2)) { 3309 ieee80211_dump_pkt(mtod(m0, uint8_t *), 3310 (dmamap->dm_nsegs == 1) ? m0->m_pkthdr.len 3311 : sizeof(wh), 3312 rate, 0); 3313 } 3314 #endif /* RTW_DEBUG */ 3315 ctl0 = proto_ctl0 | 3316 __SHIFTIN(m0->m_pkthdr.len, RTW_TXCTL0_TPKTSIZE_MASK); 3317 3318 switch (rate) { 3319 default: 3320 case 2: 3321 ctl0 |= RTW_TXCTL0_RATE_1MBPS; 3322 break; 3323 case 4: 3324 ctl0 |= RTW_TXCTL0_RATE_2MBPS; 3325 break; 3326 case 11: 3327 ctl0 |= RTW_TXCTL0_RATE_5MBPS; 3328 break; 3329 case 22: 3330 ctl0 |= RTW_TXCTL0_RATE_11MBPS; 3331 break; 3332 } 3333 /* XXX >= ? Compare after fragmentation? */ 3334 if (m0->m_pkthdr.len > ic->ic_rtsthreshold) 3335 ctl0 |= RTW_TXCTL0_RTSEN; 3336 3337 /* XXX Sometimes writes a bogus keyid; h/w doesn't 3338 * seem to care, since we don't activate h/w Tx 3339 * encryption. 3340 */ 3341 if (k != NULL) { 3342 ctl0 |= __SHIFTIN(k->wk_keyix, RTW_TXCTL0_KEYID_MASK) & 3343 RTW_TXCTL0_KEYID_MASK; 3344 } 3345 3346 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 3347 IEEE80211_FC0_TYPE_MGT) { 3348 ctl0 &= ~(RTW_TXCTL0_SPLCP | RTW_TXCTL0_RTSEN); 3349 if ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 3350 IEEE80211_FC0_SUBTYPE_BEACON) 3351 ctl0 |= RTW_TXCTL0_BEACON; 3352 } 3353 3354 if (ieee80211_compute_duration(wh, k, m0->m_pkthdr.len, 3355 ic->ic_flags, ic->ic_fragthreshold, 3356 rate, &ts->ts_d0, &ts->ts_dn, &npkt, 3357 (ifp->if_flags & (IFF_DEBUG|IFF_LINK2)) == 3358 (IFF_DEBUG|IFF_LINK2)) == -1) { 3359 DPRINTF(sc, RTW_DEBUG_XMIT, 3360 ("%s: fail compute duration\n", __func__)); 3361 goto post_load_err; 3362 } 3363 3364 d0 = &ts->ts_d0; 3365 3366 *(uint16_t*)wh->i_dur = htole16(d0->d_data_dur); 3367 3368 ctl1 = __SHIFTIN(d0->d_plcp_len, RTW_TXCTL1_LENGTH_MASK) | 3369 __SHIFTIN(d0->d_rts_dur, RTW_TXCTL1_RTSDUR_MASK); 3370 3371 if (d0->d_residue) 3372 ctl1 |= RTW_TXCTL1_LENGEXT; 3373 3374 /* TBD fragmentation */ 3375 3376 ts->ts_first = tdb->tdb_next; 3377 3378 rtw_txdescs_sync(tdb, ts->ts_first, dmamap->dm_nsegs, 3379 BUS_DMASYNC_PREWRITE); 3380 3381 KASSERT(ts->ts_first < tdb->tdb_ndesc); 3382 3383 #if NBPFILTER > 0 3384 if (ic->ic_rawbpf != NULL) 3385 bpf_mtap((void *)ic->ic_rawbpf, m0); 3386 3387 if (sc->sc_radiobpf != NULL) { 3388 struct rtw_tx_radiotap_header *rt = &sc->sc_txtap; 3389 3390 rt->rt_rate = rate; 3391 3392 bpf_mtap2(sc->sc_radiobpf, (void *)rt, 3393 sizeof(sc->sc_txtapu), m0); 3394 } 3395 #endif /* NBPFILTER > 0 */ 3396 3397 for (i = 0, lastdesc = desc = ts->ts_first; 3398 i < dmamap->dm_nsegs; 3399 i++, desc = RTW_NEXT_IDX(tdb, desc)) { 3400 if (dmamap->dm_segs[i].ds_len > RTW_TXLEN_LENGTH_MASK) { 3401 DPRINTF(sc, RTW_DEBUG_XMIT_DESC, 3402 ("%s: seg too long\n", __func__)); 3403 goto post_load_err; 3404 } 3405 td = &tdb->tdb_desc[desc]; 3406 td->td_ctl0 = htole32(ctl0); 3407 td->td_ctl1 = htole32(ctl1); 3408 td->td_buf = htole32(dmamap->dm_segs[i].ds_addr); 3409 td->td_len = htole32(dmamap->dm_segs[i].ds_len); 3410 td->td_next = htole32(RTW_NEXT_DESC(tdb, desc)); 3411 if (i != 0) 3412 td->td_ctl0 |= htole32(RTW_TXCTL0_OWN); 3413 lastdesc = desc; 3414 #ifdef RTW_DEBUG 3415 rtw_print_txdesc(sc, "load", ts, tdb, desc); 3416 #endif /* RTW_DEBUG */ 3417 } 3418 3419 KASSERT(desc < tdb->tdb_ndesc); 3420 3421 ts->ts_ni = ni; 3422 KASSERT(ni != NULL); 3423 ts->ts_mbuf = m0; 3424 ts->ts_last = lastdesc; 3425 tdb->tdb_desc[ts->ts_last].td_ctl0 |= htole32(RTW_TXCTL0_LS); 3426 tdb->tdb_desc[ts->ts_first].td_ctl0 |= 3427 htole32(RTW_TXCTL0_FS); 3428 3429 #ifdef RTW_DEBUG 3430 rtw_print_txdesc(sc, "FS on", ts, tdb, ts->ts_first); 3431 rtw_print_txdesc(sc, "LS on", ts, tdb, ts->ts_last); 3432 #endif /* RTW_DEBUG */ 3433 3434 tdb->tdb_nfree -= dmamap->dm_nsegs; 3435 tdb->tdb_next = desc; 3436 3437 rtw_txdescs_sync(tdb, ts->ts_first, dmamap->dm_nsegs, 3438 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 3439 3440 tdb->tdb_desc[ts->ts_first].td_ctl0 |= 3441 htole32(RTW_TXCTL0_OWN); 3442 3443 #ifdef RTW_DEBUG 3444 rtw_print_txdesc(sc, "OWN on", ts, tdb, ts->ts_first); 3445 #endif /* RTW_DEBUG */ 3446 3447 rtw_txdescs_sync(tdb, ts->ts_first, 1, 3448 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 3449 3450 SIMPLEQ_REMOVE_HEAD(&tsb->tsb_freeq, ts_q); 3451 SIMPLEQ_INSERT_TAIL(&tsb->tsb_dirtyq, ts, ts_q); 3452 3453 if (tsb != &sc->sc_txsoft_blk[RTW_TXPRIBCN]) 3454 sc->sc_led_state.ls_event |= RTW_LED_S_TX; 3455 tsb->tsb_tx_timer = 5; 3456 ifp->if_timer = 1; 3457 rtw_tx_kick(&sc->sc_regs, tsb->tsb_poll); 3458 } 3459 out: 3460 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: leave\n", __func__)); 3461 return; 3462 post_load_err: 3463 bus_dmamap_unload(sc->sc_dmat, dmamap); 3464 m_freem(m0); 3465 post_dequeue_err: 3466 ieee80211_free_node(ni); 3467 return; 3468 } 3469 3470 static void 3471 rtw_idle(struct rtw_regs *regs) 3472 { 3473 int active; 3474 uint8_t tppoll; 3475 3476 /* request stop DMA; wait for packets to stop transmitting. */ 3477 3478 RTW_WRITE8(regs, RTW_TPPOLL, RTW_TPPOLL_SALL); 3479 RTW_WBR(regs, RTW_TPPOLL, RTW_TPPOLL); 3480 3481 for (active = 0; active < 300 && 3482 (tppoll = RTW_READ8(regs, RTW_TPPOLL) & RTW_TPPOLL_ACTIVE) != 0; 3483 active++) 3484 DELAY(10); 3485 printf("%s: transmit DMA idle in %dus, tppoll %02" PRIx8 "\n", __func__, 3486 active * 10, tppoll); 3487 } 3488 3489 static void 3490 rtw_watchdog(struct ifnet *ifp) 3491 { 3492 int pri, tx_timeouts = 0; 3493 struct rtw_softc *sc; 3494 struct rtw_txsoft_blk *tsb; 3495 3496 sc = ifp->if_softc; 3497 3498 ifp->if_timer = 0; 3499 3500 if (!device_is_active(sc->sc_dev)) 3501 return; 3502 3503 for (pri = 0; pri < RTW_NTXPRI; pri++) { 3504 tsb = &sc->sc_txsoft_blk[pri]; 3505 3506 if (tsb->tsb_tx_timer == 0) 3507 continue; 3508 else if (--tsb->tsb_tx_timer == 0) { 3509 if (SIMPLEQ_EMPTY(&tsb->tsb_dirtyq)) 3510 continue; 3511 printf("%s: transmit timeout, priority %d\n", 3512 ifp->if_xname, pri); 3513 ifp->if_oerrors++; 3514 if (pri != RTW_TXPRIBCN) 3515 tx_timeouts++; 3516 } else 3517 ifp->if_timer = 1; 3518 } 3519 3520 if (tx_timeouts > 0) { 3521 /* Stop Tx DMA, disable xmtr, flush Tx rings, enable xmtr, 3522 * reset s/w tx-ring pointers, and start transmission. 3523 * 3524 * TBD Stop/restart just the broken rings? 3525 */ 3526 rtw_idle(&sc->sc_regs); 3527 rtw_io_enable(sc, RTW_CR_TE, 0); 3528 rtw_txdescs_reset(sc); 3529 rtw_io_enable(sc, RTW_CR_TE, 1); 3530 rtw_start(ifp); 3531 } 3532 ieee80211_watchdog(&sc->sc_ic); 3533 return; 3534 } 3535 3536 static void 3537 rtw_next_scan(void *arg) 3538 { 3539 struct ieee80211com *ic = arg; 3540 int s; 3541 3542 /* don't call rtw_start w/o network interrupts blocked */ 3543 s = splnet(); 3544 if (ic->ic_state == IEEE80211_S_SCAN) 3545 ieee80211_next_scan(ic); 3546 splx(s); 3547 } 3548 3549 static void 3550 rtw_join_bss(struct rtw_softc *sc, uint8_t *bssid, uint16_t intval0) 3551 { 3552 uint16_t bcnitv, bintritv, intval; 3553 int i; 3554 struct rtw_regs *regs = &sc->sc_regs; 3555 3556 for (i = 0; i < IEEE80211_ADDR_LEN; i++) 3557 RTW_WRITE8(regs, RTW_BSSID + i, bssid[i]); 3558 3559 RTW_SYNC(regs, RTW_BSSID16, RTW_BSSID32); 3560 3561 rtw_set_access(regs, RTW_ACCESS_CONFIG); 3562 3563 intval = MIN(intval0, __SHIFTOUT_MASK(RTW_BCNITV_BCNITV_MASK)); 3564 3565 bcnitv = RTW_READ16(regs, RTW_BCNITV) & ~RTW_BCNITV_BCNITV_MASK; 3566 bcnitv |= __SHIFTIN(intval, RTW_BCNITV_BCNITV_MASK); 3567 RTW_WRITE16(regs, RTW_BCNITV, bcnitv); 3568 /* interrupt host 1ms before the TBTT */ 3569 bintritv = RTW_READ16(regs, RTW_BINTRITV) & ~RTW_BINTRITV_BINTRITV; 3570 bintritv |= __SHIFTIN(1000, RTW_BINTRITV_BINTRITV); 3571 RTW_WRITE16(regs, RTW_BINTRITV, bintritv); 3572 /* magic from Linux */ 3573 RTW_WRITE16(regs, RTW_ATIMWND, __SHIFTIN(1, RTW_ATIMWND_ATIMWND)); 3574 RTW_WRITE16(regs, RTW_ATIMTRITV, __SHIFTIN(2, RTW_ATIMTRITV_ATIMTRITV)); 3575 rtw_set_access(regs, RTW_ACCESS_NONE); 3576 3577 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 3578 } 3579 3580 /* Synchronize the hardware state with the software state. */ 3581 static int 3582 rtw_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 3583 { 3584 struct ifnet *ifp = ic->ic_ifp; 3585 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3586 enum ieee80211_state ostate; 3587 int error; 3588 3589 ostate = ic->ic_state; 3590 3591 aprint_debug_dev(sc->sc_dev, "%s: l.%d\n", __func__, __LINE__); 3592 rtw_led_newstate(sc, nstate); 3593 3594 aprint_debug_dev(sc->sc_dev, "%s: l.%d\n", __func__, __LINE__); 3595 if (nstate == IEEE80211_S_INIT) { 3596 callout_stop(&sc->sc_scan_ch); 3597 sc->sc_cur_chan = IEEE80211_CHAN_ANY; 3598 return (*sc->sc_mtbl.mt_newstate)(ic, nstate, arg); 3599 } 3600 3601 if (ostate == IEEE80211_S_INIT && nstate != IEEE80211_S_INIT) 3602 rtw_pwrstate(sc, RTW_ON); 3603 3604 if ((error = rtw_tune(sc)) != 0) 3605 return error; 3606 3607 switch (nstate) { 3608 case IEEE80211_S_INIT: 3609 panic("%s: unexpected state IEEE80211_S_INIT\n", __func__); 3610 break; 3611 case IEEE80211_S_SCAN: 3612 if (ostate != IEEE80211_S_SCAN) { 3613 (void)memset(ic->ic_bss->ni_bssid, 0, 3614 IEEE80211_ADDR_LEN); 3615 rtw_set_nettype(sc, IEEE80211_M_MONITOR); 3616 } 3617 3618 callout_reset(&sc->sc_scan_ch, rtw_dwelltime * hz / 1000, 3619 rtw_next_scan, ic); 3620 3621 break; 3622 case IEEE80211_S_RUN: 3623 switch (ic->ic_opmode) { 3624 case IEEE80211_M_HOSTAP: 3625 case IEEE80211_M_IBSS: 3626 rtw_set_nettype(sc, IEEE80211_M_MONITOR); 3627 /*FALLTHROUGH*/ 3628 case IEEE80211_M_AHDEMO: 3629 case IEEE80211_M_STA: 3630 rtw_join_bss(sc, ic->ic_bss->ni_bssid, 3631 ic->ic_bss->ni_intval); 3632 break; 3633 case IEEE80211_M_MONITOR: 3634 break; 3635 } 3636 rtw_set_nettype(sc, ic->ic_opmode); 3637 break; 3638 case IEEE80211_S_ASSOC: 3639 case IEEE80211_S_AUTH: 3640 break; 3641 } 3642 3643 if (nstate != IEEE80211_S_SCAN) 3644 callout_stop(&sc->sc_scan_ch); 3645 3646 return (*sc->sc_mtbl.mt_newstate)(ic, nstate, arg); 3647 } 3648 3649 /* Extend a 32-bit TSF timestamp to a 64-bit timestamp. */ 3650 static uint64_t 3651 rtw_tsf_extend(struct rtw_regs *regs, uint32_t rstamp) 3652 { 3653 uint32_t tsftl, tsfth; 3654 3655 tsfth = RTW_READ(regs, RTW_TSFTRH); 3656 tsftl = RTW_READ(regs, RTW_TSFTRL); 3657 if (tsftl < rstamp) /* Compensate for rollover. */ 3658 tsfth--; 3659 return ((uint64_t)tsfth << 32) | rstamp; 3660 } 3661 3662 static void 3663 rtw_recv_mgmt(struct ieee80211com *ic, struct mbuf *m, 3664 struct ieee80211_node *ni, int subtype, int rssi, uint32_t rstamp) 3665 { 3666 struct ifnet *ifp = ic->ic_ifp; 3667 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3668 3669 (*sc->sc_mtbl.mt_recv_mgmt)(ic, m, ni, subtype, rssi, rstamp); 3670 3671 switch (subtype) { 3672 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 3673 case IEEE80211_FC0_SUBTYPE_BEACON: 3674 if (ic->ic_opmode == IEEE80211_M_IBSS && 3675 ic->ic_state == IEEE80211_S_RUN && 3676 device_is_active(sc->sc_dev)) { 3677 uint64_t tsf = rtw_tsf_extend(&sc->sc_regs, rstamp); 3678 if (le64toh(ni->ni_tstamp.tsf) >= tsf) 3679 (void)ieee80211_ibss_merge(ni); 3680 } 3681 break; 3682 default: 3683 break; 3684 } 3685 return; 3686 } 3687 3688 static struct ieee80211_node * 3689 rtw_node_alloc(struct ieee80211_node_table *nt) 3690 { 3691 struct ifnet *ifp = nt->nt_ic->ic_ifp; 3692 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3693 struct ieee80211_node *ni = (*sc->sc_mtbl.mt_node_alloc)(nt); 3694 3695 DPRINTF(sc, RTW_DEBUG_NODE, 3696 ("%s: alloc node %p\n", device_xname(sc->sc_dev), ni)); 3697 return ni; 3698 } 3699 3700 static void 3701 rtw_node_free(struct ieee80211_node *ni) 3702 { 3703 struct ieee80211com *ic = ni->ni_ic; 3704 struct ifnet *ifp = ic->ic_ifp; 3705 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3706 3707 DPRINTF(sc, RTW_DEBUG_NODE, 3708 ("%s: freeing node %p %s\n", device_xname(sc->sc_dev), ni, 3709 ether_sprintf(ni->ni_bssid))); 3710 (*sc->sc_mtbl.mt_node_free)(ni); 3711 } 3712 3713 static int 3714 rtw_media_change(struct ifnet *ifp) 3715 { 3716 int error; 3717 3718 error = ieee80211_media_change(ifp); 3719 if (error == ENETRESET) { 3720 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == 3721 (IFF_RUNNING|IFF_UP)) 3722 rtw_init(ifp); /* XXX lose error */ 3723 error = 0; 3724 } 3725 return error; 3726 } 3727 3728 static void 3729 rtw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 3730 { 3731 struct rtw_softc *sc = ifp->if_softc; 3732 3733 if (!device_is_active(sc->sc_dev)) { 3734 imr->ifm_active = IFM_IEEE80211 | IFM_NONE; 3735 imr->ifm_status = 0; 3736 return; 3737 } 3738 ieee80211_media_status(ifp, imr); 3739 } 3740 3741 static inline void 3742 rtw_setifprops(struct ifnet *ifp, const char *dvname, void *softc) 3743 { 3744 (void)strlcpy(ifp->if_xname, dvname, IFNAMSIZ); 3745 ifp->if_softc = softc; 3746 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST | 3747 IFF_NOTRAILERS; 3748 ifp->if_ioctl = rtw_ioctl; 3749 ifp->if_start = rtw_start; 3750 ifp->if_watchdog = rtw_watchdog; 3751 ifp->if_init = rtw_init; 3752 ifp->if_stop = rtw_stop; 3753 } 3754 3755 static inline void 3756 rtw_set80211props(struct ieee80211com *ic) 3757 { 3758 int nrate; 3759 ic->ic_phytype = IEEE80211_T_DS; 3760 ic->ic_opmode = IEEE80211_M_STA; 3761 ic->ic_caps = IEEE80211_C_PMGT | IEEE80211_C_IBSS | 3762 IEEE80211_C_HOSTAP | IEEE80211_C_MONITOR; 3763 3764 nrate = 0; 3765 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 3766 IEEE80211_RATE_BASIC | 2; 3767 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 3768 IEEE80211_RATE_BASIC | 4; 3769 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 11; 3770 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 22; 3771 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_nrates = nrate; 3772 } 3773 3774 static inline void 3775 rtw_set80211methods(struct rtw_mtbl *mtbl, struct ieee80211com *ic) 3776 { 3777 mtbl->mt_newstate = ic->ic_newstate; 3778 ic->ic_newstate = rtw_newstate; 3779 3780 mtbl->mt_recv_mgmt = ic->ic_recv_mgmt; 3781 ic->ic_recv_mgmt = rtw_recv_mgmt; 3782 3783 mtbl->mt_node_free = ic->ic_node_free; 3784 ic->ic_node_free = rtw_node_free; 3785 3786 mtbl->mt_node_alloc = ic->ic_node_alloc; 3787 ic->ic_node_alloc = rtw_node_alloc; 3788 3789 ic->ic_crypto.cs_key_delete = rtw_key_delete; 3790 ic->ic_crypto.cs_key_set = rtw_key_set; 3791 ic->ic_crypto.cs_key_update_begin = rtw_key_update_begin; 3792 ic->ic_crypto.cs_key_update_end = rtw_key_update_end; 3793 } 3794 3795 static inline void 3796 rtw_init_radiotap(struct rtw_softc *sc) 3797 { 3798 uint32_t present; 3799 3800 memset(&sc->sc_rxtapu, 0, sizeof(sc->sc_rxtapu)); 3801 sc->sc_rxtap.rr_ihdr.it_len = htole16(sizeof(sc->sc_rxtapu)); 3802 3803 if (sc->sc_rfchipid == RTW_RFCHIPID_PHILIPS) 3804 present = htole32(RTW_PHILIPS_RX_RADIOTAP_PRESENT); 3805 else 3806 present = htole32(RTW_RX_RADIOTAP_PRESENT); 3807 sc->sc_rxtap.rr_ihdr.it_present = present; 3808 3809 memset(&sc->sc_txtapu, 0, sizeof(sc->sc_txtapu)); 3810 sc->sc_txtap.rt_ihdr.it_len = htole16(sizeof(sc->sc_txtapu)); 3811 sc->sc_txtap.rt_ihdr.it_present = htole32(RTW_TX_RADIOTAP_PRESENT); 3812 } 3813 3814 static int 3815 rtw_txsoft_blk_setup(struct rtw_txsoft_blk *tsb, u_int qlen) 3816 { 3817 SIMPLEQ_INIT(&tsb->tsb_dirtyq); 3818 SIMPLEQ_INIT(&tsb->tsb_freeq); 3819 tsb->tsb_ndesc = qlen; 3820 tsb->tsb_desc = malloc(qlen * sizeof(*tsb->tsb_desc), M_DEVBUF, 3821 M_NOWAIT); 3822 if (tsb->tsb_desc == NULL) 3823 return ENOMEM; 3824 return 0; 3825 } 3826 3827 static void 3828 rtw_txsoft_blk_cleanup_all(struct rtw_softc *sc) 3829 { 3830 int pri; 3831 struct rtw_txsoft_blk *tsb; 3832 3833 for (pri = 0; pri < RTW_NTXPRI; pri++) { 3834 tsb = &sc->sc_txsoft_blk[pri]; 3835 free(tsb->tsb_desc, M_DEVBUF); 3836 tsb->tsb_desc = NULL; 3837 } 3838 } 3839 3840 static int 3841 rtw_txsoft_blk_setup_all(struct rtw_softc *sc) 3842 { 3843 int pri, rc = 0; 3844 int qlen[RTW_NTXPRI] = 3845 {RTW_TXQLENLO, RTW_TXQLENMD, RTW_TXQLENHI, RTW_TXQLENBCN}; 3846 struct rtw_txsoft_blk *tsbs; 3847 3848 tsbs = sc->sc_txsoft_blk; 3849 3850 for (pri = 0; pri < RTW_NTXPRI; pri++) { 3851 rc = rtw_txsoft_blk_setup(&tsbs[pri], qlen[pri]); 3852 if (rc != 0) 3853 break; 3854 } 3855 tsbs[RTW_TXPRILO].tsb_poll = RTW_TPPOLL_LPQ | RTW_TPPOLL_SLPQ; 3856 tsbs[RTW_TXPRIMD].tsb_poll = RTW_TPPOLL_NPQ | RTW_TPPOLL_SNPQ; 3857 tsbs[RTW_TXPRIHI].tsb_poll = RTW_TPPOLL_HPQ | RTW_TPPOLL_SHPQ; 3858 tsbs[RTW_TXPRIBCN].tsb_poll = RTW_TPPOLL_BQ | RTW_TPPOLL_SBQ; 3859 return rc; 3860 } 3861 3862 static void 3863 rtw_txdesc_blk_setup(struct rtw_txdesc_blk *tdb, struct rtw_txdesc *desc, 3864 u_int ndesc, bus_addr_t ofs, bus_addr_t physbase) 3865 { 3866 tdb->tdb_ndesc = ndesc; 3867 tdb->tdb_desc = desc; 3868 tdb->tdb_physbase = physbase; 3869 tdb->tdb_ofs = ofs; 3870 3871 (void)memset(tdb->tdb_desc, 0, 3872 sizeof(tdb->tdb_desc[0]) * tdb->tdb_ndesc); 3873 3874 rtw_txdesc_blk_init(tdb); 3875 tdb->tdb_next = 0; 3876 } 3877 3878 static void 3879 rtw_txdesc_blk_setup_all(struct rtw_softc *sc) 3880 { 3881 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRILO], 3882 &sc->sc_descs->hd_txlo[0], RTW_NTXDESCLO, 3883 RTW_RING_OFFSET(hd_txlo), RTW_RING_BASE(sc, hd_txlo)); 3884 3885 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRIMD], 3886 &sc->sc_descs->hd_txmd[0], RTW_NTXDESCMD, 3887 RTW_RING_OFFSET(hd_txmd), RTW_RING_BASE(sc, hd_txmd)); 3888 3889 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRIHI], 3890 &sc->sc_descs->hd_txhi[0], RTW_NTXDESCHI, 3891 RTW_RING_OFFSET(hd_txhi), RTW_RING_BASE(sc, hd_txhi)); 3892 3893 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRIBCN], 3894 &sc->sc_descs->hd_bcn[0], RTW_NTXDESCBCN, 3895 RTW_RING_OFFSET(hd_bcn), RTW_RING_BASE(sc, hd_bcn)); 3896 } 3897 3898 static struct rtw_rf * 3899 rtw_rf_attach(struct rtw_softc *sc, enum rtw_rfchipid rfchipid, int digphy) 3900 { 3901 rtw_rf_write_t rf_write; 3902 struct rtw_rf *rf; 3903 3904 switch (rfchipid) { 3905 default: 3906 rf_write = rtw_rf_hostwrite; 3907 break; 3908 case RTW_RFCHIPID_INTERSIL: 3909 case RTW_RFCHIPID_PHILIPS: 3910 case RTW_RFCHIPID_GCT: /* XXX a guess */ 3911 case RTW_RFCHIPID_RFMD: 3912 rf_write = (rtw_host_rfio) ? rtw_rf_hostwrite : rtw_rf_macwrite; 3913 break; 3914 } 3915 3916 switch (rfchipid) { 3917 case RTW_RFCHIPID_GCT: 3918 rf = rtw_grf5101_create(&sc->sc_regs, rf_write, 0); 3919 sc->sc_pwrstate_cb = rtw_maxim_pwrstate; 3920 break; 3921 case RTW_RFCHIPID_MAXIM: 3922 rf = rtw_max2820_create(&sc->sc_regs, rf_write, 0); 3923 sc->sc_pwrstate_cb = rtw_maxim_pwrstate; 3924 break; 3925 case RTW_RFCHIPID_PHILIPS: 3926 rf = rtw_sa2400_create(&sc->sc_regs, rf_write, digphy); 3927 sc->sc_pwrstate_cb = rtw_philips_pwrstate; 3928 break; 3929 case RTW_RFCHIPID_RFMD: 3930 /* XXX RFMD has no RF constructor */ 3931 sc->sc_pwrstate_cb = rtw_rfmd_pwrstate; 3932 /*FALLTHROUGH*/ 3933 default: 3934 return NULL; 3935 } 3936 rf->rf_continuous_tx_cb = 3937 (rtw_continuous_tx_cb_t)rtw_continuous_tx_enable; 3938 rf->rf_continuous_tx_arg = (void *)sc; 3939 return rf; 3940 } 3941 3942 /* Revision C and later use a different PHY delay setting than 3943 * revisions A and B. 3944 */ 3945 static uint8_t 3946 rtw_check_phydelay(struct rtw_regs *regs, uint32_t old_rcr) 3947 { 3948 #define REVAB (RTW_RCR_MXDMA_UNLIMITED | RTW_RCR_AICV) 3949 #define REVC (REVAB | RTW_RCR_RXFTH_WHOLE) 3950 3951 uint8_t phydelay = __SHIFTIN(0x6, RTW_PHYDELAY_PHYDELAY); 3952 3953 RTW_WRITE(regs, RTW_RCR, REVAB); 3954 RTW_WBW(regs, RTW_RCR, RTW_RCR); 3955 RTW_WRITE(regs, RTW_RCR, REVC); 3956 3957 RTW_WBR(regs, RTW_RCR, RTW_RCR); 3958 if ((RTW_READ(regs, RTW_RCR) & REVC) == REVC) 3959 phydelay |= RTW_PHYDELAY_REVC_MAGIC; 3960 3961 RTW_WRITE(regs, RTW_RCR, old_rcr); /* restore RCR */ 3962 RTW_SYNC(regs, RTW_RCR, RTW_RCR); 3963 3964 return phydelay; 3965 #undef REVC 3966 } 3967 3968 void 3969 rtw_attach(struct rtw_softc *sc) 3970 { 3971 struct ifnet *ifp = &sc->sc_if; 3972 struct ieee80211com *ic = &sc->sc_ic; 3973 struct rtw_txsoft_blk *tsb; 3974 int pri, rc; 3975 3976 rtw_cipher_wep = ieee80211_cipher_wep; 3977 rtw_cipher_wep.ic_decap = rtw_wep_decap; 3978 3979 NEXT_ATTACH_STATE(sc, DETACHED); 3980 3981 switch (RTW_READ(&sc->sc_regs, RTW_TCR) & RTW_TCR_HWVERID_MASK) { 3982 case RTW_TCR_HWVERID_F: 3983 sc->sc_hwverid = 'F'; 3984 break; 3985 case RTW_TCR_HWVERID_D: 3986 sc->sc_hwverid = 'D'; 3987 break; 3988 default: 3989 sc->sc_hwverid = '?'; 3990 break; 3991 } 3992 aprint_verbose_dev(sc->sc_dev, "hardware version %c\n", 3993 sc->sc_hwverid); 3994 3995 rc = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct rtw_descs), 3996 RTW_DESC_ALIGNMENT, 0, &sc->sc_desc_segs, 1, &sc->sc_desc_nsegs, 3997 0); 3998 3999 if (rc != 0) { 4000 aprint_error_dev(sc->sc_dev, 4001 "could not allocate hw descriptors, error %d\n", rc); 4002 goto err; 4003 } 4004 4005 NEXT_ATTACH_STATE(sc, FINISH_DESC_ALLOC); 4006 4007 rc = bus_dmamem_map(sc->sc_dmat, &sc->sc_desc_segs, 4008 sc->sc_desc_nsegs, sizeof(struct rtw_descs), 4009 (void **)&sc->sc_descs, BUS_DMA_COHERENT); 4010 4011 if (rc != 0) { 4012 aprint_error_dev(sc->sc_dev, 4013 "could not map hw descriptors, error %d\n", rc); 4014 goto err; 4015 } 4016 NEXT_ATTACH_STATE(sc, FINISH_DESC_MAP); 4017 4018 rc = bus_dmamap_create(sc->sc_dmat, sizeof(struct rtw_descs), 1, 4019 sizeof(struct rtw_descs), 0, 0, &sc->sc_desc_dmamap); 4020 4021 if (rc != 0) { 4022 aprint_error_dev(sc->sc_dev, 4023 "could not create DMA map for hw descriptors, error %d\n", 4024 rc); 4025 goto err; 4026 } 4027 NEXT_ATTACH_STATE(sc, FINISH_DESCMAP_CREATE); 4028 4029 sc->sc_rxdesc_blk.rdb_dmat = sc->sc_dmat; 4030 sc->sc_rxdesc_blk.rdb_dmamap = sc->sc_desc_dmamap; 4031 4032 for (pri = 0; pri < RTW_NTXPRI; pri++) { 4033 sc->sc_txdesc_blk[pri].tdb_dmat = sc->sc_dmat; 4034 sc->sc_txdesc_blk[pri].tdb_dmamap = sc->sc_desc_dmamap; 4035 } 4036 4037 rc = bus_dmamap_load(sc->sc_dmat, sc->sc_desc_dmamap, sc->sc_descs, 4038 sizeof(struct rtw_descs), NULL, 0); 4039 4040 if (rc != 0) { 4041 aprint_error_dev(sc->sc_dev, 4042 "could not load DMA map for hw descriptors, error %d\n", 4043 rc); 4044 goto err; 4045 } 4046 NEXT_ATTACH_STATE(sc, FINISH_DESCMAP_LOAD); 4047 4048 if (rtw_txsoft_blk_setup_all(sc) != 0) 4049 goto err; 4050 NEXT_ATTACH_STATE(sc, FINISH_TXCTLBLK_SETUP); 4051 4052 rtw_txdesc_blk_setup_all(sc); 4053 4054 NEXT_ATTACH_STATE(sc, FINISH_TXDESCBLK_SETUP); 4055 4056 sc->sc_rxdesc_blk.rdb_desc = &sc->sc_descs->hd_rx[0]; 4057 4058 for (pri = 0; pri < RTW_NTXPRI; pri++) { 4059 tsb = &sc->sc_txsoft_blk[pri]; 4060 4061 if ((rc = rtw_txdesc_dmamaps_create(sc->sc_dmat, 4062 &tsb->tsb_desc[0], tsb->tsb_ndesc)) != 0) { 4063 aprint_error_dev(sc->sc_dev, 4064 "could not load DMA map for hw tx descriptors, " 4065 "error %d\n", rc); 4066 goto err; 4067 } 4068 } 4069 4070 NEXT_ATTACH_STATE(sc, FINISH_TXMAPS_CREATE); 4071 if ((rc = rtw_rxdesc_dmamaps_create(sc->sc_dmat, &sc->sc_rxsoft[0], 4072 RTW_RXQLEN)) != 0) { 4073 aprint_error_dev(sc->sc_dev, 4074 "could not load DMA map for hw rx descriptors, error %d\n", 4075 rc); 4076 goto err; 4077 } 4078 NEXT_ATTACH_STATE(sc, FINISH_RXMAPS_CREATE); 4079 4080 /* Reset the chip to a known state. */ 4081 if (rtw_reset(sc) != 0) 4082 goto err; 4083 NEXT_ATTACH_STATE(sc, FINISH_RESET); 4084 4085 sc->sc_rcr = RTW_READ(&sc->sc_regs, RTW_RCR); 4086 4087 if ((sc->sc_rcr & RTW_RCR_9356SEL) != 0) 4088 sc->sc_flags |= RTW_F_9356SROM; 4089 4090 if (rtw_srom_read(&sc->sc_regs, sc->sc_flags, &sc->sc_srom, 4091 sc->sc_dev) != 0) 4092 goto err; 4093 4094 NEXT_ATTACH_STATE(sc, FINISH_READ_SROM); 4095 4096 if (rtw_srom_parse(&sc->sc_srom, &sc->sc_flags, &sc->sc_csthr, 4097 &sc->sc_rfchipid, &sc->sc_rcr, &sc->sc_locale, 4098 sc->sc_dev) != 0) { 4099 aprint_error_dev(sc->sc_dev, 4100 "attach failed, malformed serial ROM\n"); 4101 goto err; 4102 } 4103 4104 aprint_verbose_dev(sc->sc_dev, "%s PHY\n", 4105 ((sc->sc_flags & RTW_F_DIGPHY) != 0) ? "digital" : "analog"); 4106 4107 aprint_verbose_dev(sc->sc_dev, "carrier-sense threshold %u\n", 4108 sc->sc_csthr); 4109 4110 NEXT_ATTACH_STATE(sc, FINISH_PARSE_SROM); 4111 4112 sc->sc_rf = rtw_rf_attach(sc, sc->sc_rfchipid, 4113 sc->sc_flags & RTW_F_DIGPHY); 4114 4115 if (sc->sc_rf == NULL) { 4116 aprint_verbose_dev(sc->sc_dev, 4117 "attach failed, could not attach RF\n"); 4118 goto err; 4119 } 4120 4121 NEXT_ATTACH_STATE(sc, FINISH_RF_ATTACH); 4122 4123 sc->sc_phydelay = rtw_check_phydelay(&sc->sc_regs, sc->sc_rcr); 4124 4125 RTW_DPRINTF(RTW_DEBUG_ATTACH, 4126 ("%s: PHY delay %d\n", device_xname(sc->sc_dev), sc->sc_phydelay)); 4127 4128 if (sc->sc_locale == RTW_LOCALE_UNKNOWN) 4129 rtw_identify_country(&sc->sc_regs, &sc->sc_locale); 4130 4131 rtw_init_channels(sc->sc_locale, &sc->sc_ic.ic_channels, sc->sc_dev); 4132 4133 if (rtw_identify_sta(&sc->sc_regs, &sc->sc_ic.ic_myaddr, 4134 sc->sc_dev) != 0) 4135 goto err; 4136 NEXT_ATTACH_STATE(sc, FINISH_ID_STA); 4137 4138 rtw_setifprops(ifp, device_xname(sc->sc_dev), (void*)sc); 4139 4140 IFQ_SET_READY(&ifp->if_snd); 4141 4142 sc->sc_ic.ic_ifp = ifp; 4143 rtw_set80211props(&sc->sc_ic); 4144 4145 rtw_led_attach(&sc->sc_led_state, (void *)sc); 4146 4147 /* 4148 * Call MI attach routines. 4149 */ 4150 if_attach(ifp); 4151 ieee80211_ifattach(&sc->sc_ic); 4152 4153 rtw_set80211methods(&sc->sc_mtbl, &sc->sc_ic); 4154 4155 /* possibly we should fill in our own sc_send_prresp, since 4156 * the RTL8180 is probably sending probe responses in ad hoc 4157 * mode. 4158 */ 4159 4160 /* complete initialization */ 4161 ieee80211_media_init(&sc->sc_ic, rtw_media_change, rtw_media_status); 4162 callout_init(&sc->sc_scan_ch, 0); 4163 4164 rtw_init_radiotap(sc); 4165 4166 #if NBPFILTER > 0 4167 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 4168 sizeof(struct ieee80211_frame) + 64, &sc->sc_radiobpf); 4169 #endif 4170 4171 NEXT_ATTACH_STATE(sc, FINISHED); 4172 4173 ieee80211_announce(ic); 4174 return; 4175 err: 4176 rtw_detach(sc); 4177 return; 4178 } 4179 4180 int 4181 rtw_detach(struct rtw_softc *sc) 4182 { 4183 struct ifnet *ifp = &sc->sc_if; 4184 int pri, s; 4185 4186 s = splnet(); 4187 4188 switch (sc->sc_attach_state) { 4189 case FINISHED: 4190 rtw_stop(ifp, 1); 4191 4192 pmf_device_deregister(sc->sc_dev); 4193 callout_stop(&sc->sc_scan_ch); 4194 ieee80211_ifdetach(&sc->sc_ic); 4195 if_detach(ifp); 4196 rtw_led_detach(&sc->sc_led_state); 4197 /*FALLTHROUGH*/ 4198 case FINISH_ID_STA: 4199 case FINISH_RF_ATTACH: 4200 rtw_rf_destroy(sc->sc_rf); 4201 sc->sc_rf = NULL; 4202 /*FALLTHROUGH*/ 4203 case FINISH_PARSE_SROM: 4204 case FINISH_READ_SROM: 4205 rtw_srom_free(&sc->sc_srom); 4206 /*FALLTHROUGH*/ 4207 case FINISH_RESET: 4208 case FINISH_RXMAPS_CREATE: 4209 rtw_rxdesc_dmamaps_destroy(sc->sc_dmat, &sc->sc_rxsoft[0], 4210 RTW_RXQLEN); 4211 /*FALLTHROUGH*/ 4212 case FINISH_TXMAPS_CREATE: 4213 for (pri = 0; pri < RTW_NTXPRI; pri++) { 4214 rtw_txdesc_dmamaps_destroy(sc->sc_dmat, 4215 sc->sc_txsoft_blk[pri].tsb_desc, 4216 sc->sc_txsoft_blk[pri].tsb_ndesc); 4217 } 4218 /*FALLTHROUGH*/ 4219 case FINISH_TXDESCBLK_SETUP: 4220 case FINISH_TXCTLBLK_SETUP: 4221 rtw_txsoft_blk_cleanup_all(sc); 4222 /*FALLTHROUGH*/ 4223 case FINISH_DESCMAP_LOAD: 4224 bus_dmamap_unload(sc->sc_dmat, sc->sc_desc_dmamap); 4225 /*FALLTHROUGH*/ 4226 case FINISH_DESCMAP_CREATE: 4227 bus_dmamap_destroy(sc->sc_dmat, sc->sc_desc_dmamap); 4228 /*FALLTHROUGH*/ 4229 case FINISH_DESC_MAP: 4230 bus_dmamem_unmap(sc->sc_dmat, (void *)sc->sc_descs, 4231 sizeof(struct rtw_descs)); 4232 /*FALLTHROUGH*/ 4233 case FINISH_DESC_ALLOC: 4234 bus_dmamem_free(sc->sc_dmat, &sc->sc_desc_segs, 4235 sc->sc_desc_nsegs); 4236 /*FALLTHROUGH*/ 4237 case DETACHED: 4238 NEXT_ATTACH_STATE(sc, DETACHED); 4239 break; 4240 } 4241 splx(s); 4242 return 0; 4243 } 4244
Indexes created Mon Sep 29 03:10:08 GMT 2025