rtw.c revision 1.133
1 /* $NetBSD: rtw.c,v 1.133 2019/05/28 07:41:48 msaitoh 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 * 17 * THIS SOFTWARE IS PROVIDED BY David Young ``AS IS'' AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 20 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL David 21 * Young BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 28 * OF SUCH DAMAGE. 29 */ 30 /* 31 * Device driver for the Realtek RTL8180 802.11 MAC/BBP. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: rtw.c,v 1.133 2019/05/28 07:41:48 msaitoh Exp $"); 36 37 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 #include <sys/systm.h> 41 #include <sys/callout.h> 42 #include <sys/mbuf.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> 45 #include <sys/time.h> 46 #include <sys/types.h> 47 #include <sys/device.h> 48 #include <sys/sockio.h> 49 50 #include <machine/endian.h> 51 #include <sys/bus.h> 52 #include <sys/intr.h> /* splnet */ 53 54 #include <net/if.h> 55 #include <net/if_media.h> 56 #include <net/if_ether.h> 57 58 #include <net80211/ieee80211_netbsd.h> 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_radiotap.h> 61 62 #include <net/bpf.h> 63 64 #include <dev/ic/rtwreg.h> 65 #include <dev/ic/rtwvar.h> 66 #include <dev/ic/rtwphyio.h> 67 #include <dev/ic/rtwphy.h> 68 69 #include <dev/ic/smc93cx6var.h> 70 71 static int rtw_rfprog_fallback = 0; 72 static int rtw_host_rfio = 0; 73 74 #ifdef RTW_DEBUG 75 int rtw_debug = 0; 76 static int rtw_rxbufs_limit = RTW_RXQLEN; 77 #endif /* RTW_DEBUG */ 78 79 #define NEXT_ATTACH_STATE(sc, state) do { \ 80 DPRINTF(sc, RTW_DEBUG_ATTACH, \ 81 ("%s: attach state %s\n", __func__, #state)); \ 82 sc->sc_attach_state = state; \ 83 } while (0) 84 85 int rtw_dwelltime = 200; /* milliseconds */ 86 static struct ieee80211_cipher rtw_cipher_wep; 87 88 static void rtw_disable_interrupts(struct rtw_regs *); 89 static void rtw_enable_interrupts(struct rtw_softc *); 90 91 static int rtw_init(struct ifnet *); 92 static void rtw_softintr(void *); 93 94 static void rtw_start(struct ifnet *); 95 static void rtw_reset_oactive(struct rtw_softc *); 96 static struct mbuf *rtw_beacon_alloc(struct rtw_softc *, 97 struct ieee80211_node *); 98 static u_int rtw_txring_next(struct rtw_regs *, struct rtw_txdesc_blk *); 99 100 static void rtw_io_enable(struct rtw_softc *, uint8_t, int); 101 static int rtw_key_delete(struct ieee80211com *, const struct ieee80211_key *); 102 static int rtw_key_set(struct ieee80211com *, const struct ieee80211_key *, 103 const uint8_t[IEEE80211_ADDR_LEN]); 104 static void rtw_key_update_end(struct ieee80211com *); 105 static void rtw_key_update_begin(struct ieee80211com *); 106 static int rtw_wep_decap(struct ieee80211_key *, struct mbuf *, int); 107 static void rtw_wep_setkeys(struct rtw_softc *, struct ieee80211_key *, int); 108 109 static void rtw_led_attach(struct rtw_led_state *, void *); 110 static void rtw_led_detach(struct rtw_led_state *); 111 static void rtw_led_init(struct rtw_regs *); 112 static void rtw_led_slowblink(void *); 113 static void rtw_led_fastblink(void *); 114 static void rtw_led_set(struct rtw_led_state *, struct rtw_regs *, int); 115 116 static int rtw_sysctl_verify_rfio(SYSCTLFN_PROTO); 117 static int rtw_sysctl_verify_rfprog(SYSCTLFN_PROTO); 118 #ifdef RTW_DEBUG 119 static void rtw_dump_rings(struct rtw_softc *sc); 120 static void rtw_print_txdesc(struct rtw_softc *, const char *, 121 struct rtw_txsoft *, struct rtw_txdesc_blk *, int); 122 static int rtw_sysctl_verify_debug(SYSCTLFN_PROTO); 123 static int rtw_sysctl_verify_rxbufs_limit(SYSCTLFN_PROTO); 124 #endif /* RTW_DEBUG */ 125 #ifdef RTW_DIAG 126 static void rtw_txring_fixup(struct rtw_softc *sc, const char *fn, int ln); 127 #endif /* RTW_DIAG */ 128 129 /* 130 * Setup sysctl(3) MIB, hw.rtw.* 131 * 132 * TBD condition CTLFLAG_PERMANENT on being a module or not 133 */ 134 SYSCTL_SETUP(sysctl_rtw, "sysctl rtw(4) subtree setup") 135 { 136 int rc; 137 const struct sysctlnode *cnode, *rnode; 138 139 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 140 CTLFLAG_PERMANENT, CTLTYPE_NODE, "rtw", 141 "Realtek RTL818x 802.11 controls", 142 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) 143 goto err; 144 145 #ifdef RTW_DEBUG 146 /* control debugging printfs */ 147 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 148 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 149 "debug", SYSCTL_DESCR("Enable RTL818x debugging output"), 150 rtw_sysctl_verify_debug, 0, &rtw_debug, 0, 151 CTL_CREATE, CTL_EOL)) != 0) 152 goto err; 153 154 /* Limit rx buffers, for simulating resource exhaustion. */ 155 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 156 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 157 "rxbufs_limit", 158 SYSCTL_DESCR("Set rx buffers limit"), 159 rtw_sysctl_verify_rxbufs_limit, 0, &rtw_rxbufs_limit, 0, 160 CTL_CREATE, CTL_EOL)) != 0) 161 goto err; 162 163 #endif /* RTW_DEBUG */ 164 /* set fallback RF programming method */ 165 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 166 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 167 "rfprog_fallback", 168 SYSCTL_DESCR("Set fallback RF programming method"), 169 rtw_sysctl_verify_rfprog, 0, &rtw_rfprog_fallback, 0, 170 CTL_CREATE, CTL_EOL)) != 0) 171 goto err; 172 173 /* force host to control RF I/O bus */ 174 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 175 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 176 "host_rfio", SYSCTL_DESCR("Enable host control of RF I/O"), 177 rtw_sysctl_verify_rfio, 0, &rtw_host_rfio, 0, 178 CTL_CREATE, CTL_EOL)) != 0) 179 goto err; 180 181 return; 182 err: 183 printf("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 184 } 185 186 static int 187 rtw_sysctl_verify(SYSCTLFN_ARGS, int lower, int upper) 188 { 189 int error, t; 190 struct sysctlnode node; 191 192 node = *rnode; 193 t = *(int*)rnode->sysctl_data; 194 node.sysctl_data = &t; 195 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 196 if (error || newp == NULL) 197 return (error); 198 199 if (t < lower || t > upper) 200 return (EINVAL); 201 202 *(int*)rnode->sysctl_data = t; 203 204 return (0); 205 } 206 207 static int 208 rtw_sysctl_verify_rfprog(SYSCTLFN_ARGS) 209 { 210 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 0, 211 __SHIFTOUT(RTW_CONFIG4_RFTYPE_MASK, RTW_CONFIG4_RFTYPE_MASK)); 212 } 213 214 static int 215 rtw_sysctl_verify_rfio(SYSCTLFN_ARGS) 216 { 217 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 0, 1); 218 } 219 220 #ifdef RTW_DEBUG 221 static int 222 rtw_sysctl_verify_debug(SYSCTLFN_ARGS) 223 { 224 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 225 0, RTW_DEBUG_MAX); 226 } 227 228 static int 229 rtw_sysctl_verify_rxbufs_limit(SYSCTLFN_ARGS) 230 { 231 return rtw_sysctl_verify(SYSCTLFN_CALL(__UNCONST(rnode)), 232 0, RTW_RXQLEN); 233 } 234 235 static void 236 rtw_print_regs(struct rtw_regs *regs, const char *dvname, const char *where) 237 { 238 #define PRINTREG32(sc, reg) \ 239 RTW_DPRINTF(RTW_DEBUG_REGDUMP, \ 240 ("%s: reg[ " #reg " / %03x ] = %08x\n", \ 241 dvname, reg, RTW_READ(regs, reg))) 242 243 #define PRINTREG16(sc, reg) \ 244 RTW_DPRINTF(RTW_DEBUG_REGDUMP, \ 245 ("%s: reg[ " #reg " / %03x ] = %04x\n", \ 246 dvname, reg, RTW_READ16(regs, reg))) 247 248 #define PRINTREG8(sc, reg) \ 249 RTW_DPRINTF(RTW_DEBUG_REGDUMP, \ 250 ("%s: reg[ " #reg " / %03x ] = %02x\n", \ 251 dvname, reg, RTW_READ8(regs, reg))) 252 253 RTW_DPRINTF(RTW_DEBUG_REGDUMP, ("%s: %s\n", dvname, where)); 254 255 PRINTREG32(regs, RTW_IDR0); 256 PRINTREG32(regs, RTW_IDR1); 257 PRINTREG32(regs, RTW_MAR0); 258 PRINTREG32(regs, RTW_MAR1); 259 PRINTREG32(regs, RTW_TSFTRL); 260 PRINTREG32(regs, RTW_TSFTRH); 261 PRINTREG32(regs, RTW_TLPDA); 262 PRINTREG32(regs, RTW_TNPDA); 263 PRINTREG32(regs, RTW_THPDA); 264 PRINTREG32(regs, RTW_TCR); 265 PRINTREG32(regs, RTW_RCR); 266 PRINTREG32(regs, RTW_TINT); 267 PRINTREG32(regs, RTW_TBDA); 268 PRINTREG32(regs, RTW_ANAPARM); 269 PRINTREG32(regs, RTW_BB); 270 PRINTREG32(regs, RTW_PHYCFG); 271 PRINTREG32(regs, RTW_WAKEUP0L); 272 PRINTREG32(regs, RTW_WAKEUP0H); 273 PRINTREG32(regs, RTW_WAKEUP1L); 274 PRINTREG32(regs, RTW_WAKEUP1H); 275 PRINTREG32(regs, RTW_WAKEUP2LL); 276 PRINTREG32(regs, RTW_WAKEUP2LH); 277 PRINTREG32(regs, RTW_WAKEUP2HL); 278 PRINTREG32(regs, RTW_WAKEUP2HH); 279 PRINTREG32(regs, RTW_WAKEUP3LL); 280 PRINTREG32(regs, RTW_WAKEUP3LH); 281 PRINTREG32(regs, RTW_WAKEUP3HL); 282 PRINTREG32(regs, RTW_WAKEUP3HH); 283 PRINTREG32(regs, RTW_WAKEUP4LL); 284 PRINTREG32(regs, RTW_WAKEUP4LH); 285 PRINTREG32(regs, RTW_WAKEUP4HL); 286 PRINTREG32(regs, RTW_WAKEUP4HH); 287 PRINTREG32(regs, RTW_DK0); 288 PRINTREG32(regs, RTW_DK1); 289 PRINTREG32(regs, RTW_DK2); 290 PRINTREG32(regs, RTW_DK3); 291 PRINTREG32(regs, RTW_RETRYCTR); 292 PRINTREG32(regs, RTW_RDSAR); 293 PRINTREG32(regs, RTW_FER); 294 PRINTREG32(regs, RTW_FEMR); 295 PRINTREG32(regs, RTW_FPSR); 296 PRINTREG32(regs, RTW_FFER); 297 298 /* 16-bit registers */ 299 PRINTREG16(regs, RTW_BRSR); 300 PRINTREG16(regs, RTW_IMR); 301 PRINTREG16(regs, RTW_ISR); 302 PRINTREG16(regs, RTW_BCNITV); 303 PRINTREG16(regs, RTW_ATIMWND); 304 PRINTREG16(regs, RTW_BINTRITV); 305 PRINTREG16(regs, RTW_ATIMTRITV); 306 PRINTREG16(regs, RTW_CRC16ERR); 307 PRINTREG16(regs, RTW_CRC0); 308 PRINTREG16(regs, RTW_CRC1); 309 PRINTREG16(regs, RTW_CRC2); 310 PRINTREG16(regs, RTW_CRC3); 311 PRINTREG16(regs, RTW_CRC4); 312 PRINTREG16(regs, RTW_CWR); 313 314 /* 8-bit registers */ 315 PRINTREG8(regs, RTW_CR); 316 PRINTREG8(regs, RTW_9346CR); 317 PRINTREG8(regs, RTW_CONFIG0); 318 PRINTREG8(regs, RTW_CONFIG1); 319 PRINTREG8(regs, RTW_CONFIG2); 320 PRINTREG8(regs, RTW_MSR); 321 PRINTREG8(regs, RTW_CONFIG3); 322 PRINTREG8(regs, RTW_CONFIG4); 323 PRINTREG8(regs, RTW_TESTR); 324 PRINTREG8(regs, RTW_PSR); 325 PRINTREG8(regs, RTW_SCR); 326 PRINTREG8(regs, RTW_PHYDELAY); 327 PRINTREG8(regs, RTW_CRCOUNT); 328 PRINTREG8(regs, RTW_PHYADDR); 329 PRINTREG8(regs, RTW_PHYDATAW); 330 PRINTREG8(regs, RTW_PHYDATAR); 331 PRINTREG8(regs, RTW_CONFIG5); 332 PRINTREG8(regs, RTW_TPPOLL); 333 334 PRINTREG16(regs, RTW_BSSID16); 335 PRINTREG32(regs, RTW_BSSID32); 336 #undef PRINTREG32 337 #undef PRINTREG16 338 #undef PRINTREG8 339 } 340 #endif /* RTW_DEBUG */ 341 342 void 343 rtw_continuous_tx_enable(struct rtw_softc *sc, int enable) 344 { 345 struct rtw_regs *regs = &sc->sc_regs; 346 347 uint32_t tcr; 348 tcr = RTW_READ(regs, RTW_TCR); 349 tcr &= ~RTW_TCR_LBK_MASK; 350 if (enable) 351 tcr |= RTW_TCR_LBK_CONT; 352 else 353 tcr |= RTW_TCR_LBK_NORMAL; 354 RTW_WRITE(regs, RTW_TCR, tcr); 355 RTW_SYNC(regs, RTW_TCR, RTW_TCR); 356 rtw_set_access(regs, RTW_ACCESS_ANAPARM); 357 rtw_txdac_enable(sc, !enable); 358 rtw_set_access(regs, RTW_ACCESS_ANAPARM);/* XXX Voodoo from Linux. */ 359 rtw_set_access(regs, RTW_ACCESS_NONE); 360 } 361 362 #ifdef RTW_DEBUG 363 static const char * 364 rtw_access_string(enum rtw_access access) 365 { 366 switch (access) { 367 case RTW_ACCESS_NONE: 368 return "none"; 369 case RTW_ACCESS_CONFIG: 370 return "config"; 371 case RTW_ACCESS_ANAPARM: 372 return "anaparm"; 373 default: 374 return "unknown"; 375 } 376 } 377 #endif /* RTW_DEBUG */ 378 379 static void 380 rtw_set_access1(struct rtw_regs *regs, enum rtw_access naccess) 381 { 382 KASSERT(/* naccess >= RTW_ACCESS_NONE && */ 383 naccess <= RTW_ACCESS_ANAPARM); 384 KASSERT(/* regs->r_access >= RTW_ACCESS_NONE && */ 385 regs->r_access <= RTW_ACCESS_ANAPARM); 386 387 if (naccess == regs->r_access) 388 return; 389 390 switch (naccess) { 391 case RTW_ACCESS_NONE: 392 switch (regs->r_access) { 393 case RTW_ACCESS_ANAPARM: 394 rtw_anaparm_enable(regs, 0); 395 /*FALLTHROUGH*/ 396 case RTW_ACCESS_CONFIG: 397 rtw_config0123_enable(regs, 0); 398 /*FALLTHROUGH*/ 399 case RTW_ACCESS_NONE: 400 break; 401 } 402 break; 403 case RTW_ACCESS_CONFIG: 404 switch (regs->r_access) { 405 case RTW_ACCESS_NONE: 406 rtw_config0123_enable(regs, 1); 407 /*FALLTHROUGH*/ 408 case RTW_ACCESS_CONFIG: 409 break; 410 case RTW_ACCESS_ANAPARM: 411 rtw_anaparm_enable(regs, 0); 412 break; 413 } 414 break; 415 case RTW_ACCESS_ANAPARM: 416 switch (regs->r_access) { 417 case RTW_ACCESS_NONE: 418 rtw_config0123_enable(regs, 1); 419 /*FALLTHROUGH*/ 420 case RTW_ACCESS_CONFIG: 421 rtw_anaparm_enable(regs, 1); 422 /*FALLTHROUGH*/ 423 case RTW_ACCESS_ANAPARM: 424 break; 425 } 426 break; 427 } 428 } 429 430 void 431 rtw_set_access(struct rtw_regs *regs, enum rtw_access access) 432 { 433 rtw_set_access1(regs, access); 434 RTW_DPRINTF(RTW_DEBUG_ACCESS, 435 ("%s: access %s -> %s\n", __func__, 436 rtw_access_string(regs->r_access), 437 rtw_access_string(access))); 438 regs->r_access = access; 439 } 440 441 /* 442 * Enable registers, switch register banks. 443 */ 444 void 445 rtw_config0123_enable(struct rtw_regs *regs, int enable) 446 { 447 uint8_t ecr; 448 ecr = RTW_READ8(regs, RTW_9346CR); 449 ecr &= ~(RTW_9346CR_EEM_MASK | RTW_9346CR_EECS | RTW_9346CR_EESK); 450 if (enable) 451 ecr |= RTW_9346CR_EEM_CONFIG; 452 else { 453 RTW_WBW(regs, RTW_9346CR, MAX(RTW_CONFIG0, RTW_CONFIG3)); 454 ecr |= RTW_9346CR_EEM_NORMAL; 455 } 456 RTW_WRITE8(regs, RTW_9346CR, ecr); 457 RTW_SYNC(regs, RTW_9346CR, RTW_9346CR); 458 } 459 460 /* requires rtw_config0123_enable(, 1) */ 461 void 462 rtw_anaparm_enable(struct rtw_regs *regs, int enable) 463 { 464 uint8_t cfg3; 465 466 cfg3 = RTW_READ8(regs, RTW_CONFIG3); 467 cfg3 |= RTW_CONFIG3_CLKRUNEN; 468 if (enable) 469 cfg3 |= RTW_CONFIG3_PARMEN; 470 else 471 cfg3 &= ~RTW_CONFIG3_PARMEN; 472 RTW_WRITE8(regs, RTW_CONFIG3, cfg3); 473 RTW_SYNC(regs, RTW_CONFIG3, RTW_CONFIG3); 474 } 475 476 /* requires rtw_anaparm_enable(, 1) */ 477 void 478 rtw_txdac_enable(struct rtw_softc *sc, int enable) 479 { 480 uint32_t anaparm; 481 struct rtw_regs *regs = &sc->sc_regs; 482 483 anaparm = RTW_READ(regs, RTW_ANAPARM); 484 if (enable) 485 anaparm &= ~RTW_ANAPARM_TXDACOFF; 486 else 487 anaparm |= RTW_ANAPARM_TXDACOFF; 488 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 489 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 490 } 491 492 static inline int 493 rtw_chip_reset1(struct rtw_regs *regs, device_t dev) 494 { 495 uint8_t cr; 496 int i; 497 498 RTW_WRITE8(regs, RTW_CR, RTW_CR_RST); 499 500 RTW_WBR(regs, RTW_CR, RTW_CR); 501 502 for (i = 0; i < 1000; i++) { 503 if ((cr = RTW_READ8(regs, RTW_CR) & RTW_CR_RST) == 0) { 504 RTW_DPRINTF(RTW_DEBUG_RESET, 505 ("%s: reset in %dus\n", device_xname(dev), i)); 506 return 0; 507 } 508 RTW_RBR(regs, RTW_CR, RTW_CR); 509 DELAY(10); /* 10us */ 510 } 511 512 aprint_error_dev(dev, "reset failed\n"); 513 return ETIMEDOUT; 514 } 515 516 static inline int 517 rtw_chip_reset(struct rtw_regs *regs, device_t dev) 518 { 519 uint32_t tcr; 520 521 /* from Linux driver */ 522 tcr = RTW_TCR_CWMIN | RTW_TCR_MXDMA_2048 | 523 __SHIFTIN(7, RTW_TCR_SRL_MASK) | __SHIFTIN(7, RTW_TCR_LRL_MASK); 524 525 RTW_WRITE(regs, RTW_TCR, tcr); 526 527 RTW_WBW(regs, RTW_CR, RTW_TCR); 528 529 return rtw_chip_reset1(regs, dev); 530 } 531 532 static int 533 rtw_wep_decap(struct ieee80211_key *k, struct mbuf *m, int hdrlen) 534 { 535 struct ieee80211_key keycopy; 536 537 RTW_DPRINTF(RTW_DEBUG_KEY, ("%s:\n", __func__)); 538 539 keycopy = *k; 540 keycopy.wk_flags &= ~IEEE80211_KEY_SWCRYPT; 541 542 return (*ieee80211_cipher_wep.ic_decap)(&keycopy, m, hdrlen); 543 } 544 545 static int 546 rtw_key_delete(struct ieee80211com *ic, const struct ieee80211_key *k) 547 { 548 struct rtw_softc *sc = ic->ic_ifp->if_softc; 549 550 DPRINTF(sc, RTW_DEBUG_KEY, ("%s: delete key %u\n", __func__, 551 k->wk_keyix)); 552 553 KASSERT(k->wk_keyix < IEEE80211_WEP_NKID); 554 555 if (k->wk_keylen != 0 && 556 k->wk_cipher->ic_cipher == IEEE80211_CIPHER_WEP) 557 sc->sc_flags &= ~RTW_F_DK_VALID; 558 559 return 1; 560 } 561 562 static int 563 rtw_key_set(struct ieee80211com *ic, const struct ieee80211_key *k, 564 const uint8_t mac[IEEE80211_ADDR_LEN]) 565 { 566 struct rtw_softc *sc = ic->ic_ifp->if_softc; 567 568 DPRINTF(sc, RTW_DEBUG_KEY, ("%s: set key %u\n", __func__, k->wk_keyix)); 569 570 KASSERT(k->wk_keyix < IEEE80211_WEP_NKID); 571 572 sc->sc_flags &= ~RTW_F_DK_VALID; 573 574 return 1; 575 } 576 577 static void 578 rtw_key_update_begin(struct ieee80211com *ic) 579 { 580 #ifdef RTW_DEBUG 581 struct ifnet *ifp = ic->ic_ifp; 582 struct rtw_softc *sc = ifp->if_softc; 583 #endif 584 585 DPRINTF(sc, RTW_DEBUG_KEY, ("%s:\n", __func__)); 586 } 587 588 static void 589 rtw_tx_kick(struct rtw_regs *regs, uint8_t ringsel) 590 { 591 uint8_t tppoll; 592 593 tppoll = RTW_READ8(regs, RTW_TPPOLL); 594 tppoll &= ~RTW_TPPOLL_SALL; 595 tppoll |= ringsel & RTW_TPPOLL_ALL; 596 RTW_WRITE8(regs, RTW_TPPOLL, tppoll); 597 RTW_SYNC(regs, RTW_TPPOLL, RTW_TPPOLL); 598 } 599 600 static void 601 rtw_key_update_end(struct ieee80211com *ic) 602 { 603 struct ifnet *ifp = ic->ic_ifp; 604 struct rtw_softc *sc = ifp->if_softc; 605 606 DPRINTF(sc, RTW_DEBUG_KEY, ("%s:\n", __func__)); 607 608 if ((sc->sc_flags & RTW_F_DK_VALID) != 0 || 609 !device_is_active(sc->sc_dev)) 610 return; 611 612 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 613 rtw_wep_setkeys(sc, ic->ic_nw_keys, ic->ic_def_txkey); 614 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 615 (ifp->if_flags & IFF_RUNNING) != 0); 616 } 617 618 static bool 619 rtw_key_hwsupp(uint32_t flags, const struct ieee80211_key *k) 620 { 621 if (k->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 622 return false; 623 624 return ((flags & RTW_C_RXWEP_40) != 0 && k->wk_keylen == 5) || 625 ((flags & RTW_C_RXWEP_104) != 0 && k->wk_keylen == 13); 626 } 627 628 static void 629 rtw_wep_setkeys(struct rtw_softc *sc, struct ieee80211_key *wk, int txkey) 630 { 631 uint8_t psr, scr; 632 int i, keylen = 0; 633 struct rtw_regs *regs; 634 union rtw_keys *rk; 635 636 regs = &sc->sc_regs; 637 rk = &sc->sc_keys; 638 639 (void)memset(rk, 0, sizeof(*rk)); 640 641 /* Temporarily use software crypto for all keys. */ 642 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 643 if (wk[i].wk_cipher == &rtw_cipher_wep) 644 wk[i].wk_cipher = &ieee80211_cipher_wep; 645 } 646 647 rtw_set_access(regs, RTW_ACCESS_CONFIG); 648 649 psr = RTW_READ8(regs, RTW_PSR); 650 scr = RTW_READ8(regs, RTW_SCR); 651 scr &= ~(RTW_SCR_KM_MASK | RTW_SCR_TXSECON | RTW_SCR_RXSECON); 652 653 if ((sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) == 0) 654 goto out; 655 656 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 657 if (!rtw_key_hwsupp(sc->sc_flags, &wk[i])) 658 continue; 659 if (i == txkey) { 660 keylen = wk[i].wk_keylen; 661 break; 662 } 663 keylen = MAX(keylen, wk[i].wk_keylen); 664 } 665 666 if (keylen == 5) 667 scr |= RTW_SCR_KM_WEP40 | RTW_SCR_RXSECON; 668 else if (keylen == 13) 669 scr |= RTW_SCR_KM_WEP104 | RTW_SCR_RXSECON; 670 671 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 672 if (wk[i].wk_keylen != keylen || 673 wk[i].wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP) 674 continue; 675 /* h/w will decrypt, s/w still strips headers */ 676 wk[i].wk_cipher = &rtw_cipher_wep; 677 (void)memcpy(rk->rk_keys[i], wk[i].wk_key, wk[i].wk_keylen); 678 } 679 680 out: 681 RTW_WRITE8(regs, RTW_PSR, psr & ~RTW_PSR_PSEN); 682 683 bus_space_write_region_stream_4(regs->r_bt, regs->r_bh, 684 RTW_DK0, rk->rk_words, __arraycount(rk->rk_words)); 685 686 bus_space_barrier(regs->r_bt, regs->r_bh, RTW_DK0, sizeof(rk->rk_words), 687 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 688 689 RTW_DPRINTF(RTW_DEBUG_KEY, 690 ("%s.%d: scr %02" PRIx8 ", keylen %d\n", __func__, __LINE__, scr, 691 keylen)); 692 693 RTW_WBW(regs, RTW_DK0, RTW_PSR); 694 RTW_WRITE8(regs, RTW_PSR, psr); 695 RTW_WBW(regs, RTW_PSR, RTW_SCR); 696 RTW_WRITE8(regs, RTW_SCR, scr); 697 RTW_SYNC(regs, RTW_SCR, RTW_SCR); 698 rtw_set_access(regs, RTW_ACCESS_NONE); 699 sc->sc_flags |= RTW_F_DK_VALID; 700 } 701 702 static inline int 703 rtw_recall_eeprom(struct rtw_regs *regs, device_t dev) 704 { 705 int i; 706 uint8_t ecr; 707 708 ecr = RTW_READ8(regs, RTW_9346CR); 709 ecr = (ecr & ~RTW_9346CR_EEM_MASK) | RTW_9346CR_EEM_AUTOLOAD; 710 RTW_WRITE8(regs, RTW_9346CR, ecr); 711 712 RTW_WBR(regs, RTW_9346CR, RTW_9346CR); 713 714 /* wait 25ms for completion */ 715 for (i = 0; i < 250; i++) { 716 ecr = RTW_READ8(regs, RTW_9346CR); 717 if ((ecr & RTW_9346CR_EEM_MASK) == RTW_9346CR_EEM_NORMAL) { 718 RTW_DPRINTF(RTW_DEBUG_RESET, 719 ("%s: recall EEPROM in %dus\n", device_xname(dev), 720 i * 100)); 721 return 0; 722 } 723 RTW_RBR(regs, RTW_9346CR, RTW_9346CR); 724 DELAY(100); 725 } 726 aprint_error_dev(dev, "recall EEPROM failed\n"); 727 return ETIMEDOUT; 728 } 729 730 static inline int 731 rtw_reset(struct rtw_softc *sc) 732 { 733 int rc; 734 uint8_t config1; 735 736 sc->sc_flags &= ~RTW_F_DK_VALID; 737 738 if ((rc = rtw_chip_reset(&sc->sc_regs, sc->sc_dev)) != 0) 739 return rc; 740 741 rc = rtw_recall_eeprom(&sc->sc_regs, sc->sc_dev); 742 743 config1 = RTW_READ8(&sc->sc_regs, RTW_CONFIG1); 744 RTW_WRITE8(&sc->sc_regs, RTW_CONFIG1, config1 & ~RTW_CONFIG1_PMEN); 745 /* TBD turn off maximum power saving? */ 746 747 return 0; 748 } 749 750 static inline int 751 rtw_txdesc_dmamaps_create(bus_dma_tag_t dmat, struct rtw_txsoft *descs, 752 u_int ndescs) 753 { 754 int i, rc = 0; 755 for (i = 0; i < ndescs; i++) { 756 rc = bus_dmamap_create(dmat, MCLBYTES, RTW_MAXPKTSEGS, MCLBYTES, 757 0, 0, &descs[i].ts_dmamap); 758 if (rc != 0) 759 break; 760 } 761 return rc; 762 } 763 764 static inline int 765 rtw_rxdesc_dmamaps_create(bus_dma_tag_t dmat, struct rtw_rxsoft *descs, 766 u_int ndescs) 767 { 768 int i, rc = 0; 769 for (i = 0; i < ndescs; i++) { 770 rc = bus_dmamap_create(dmat, MCLBYTES, 1, MCLBYTES, 0, 0, 771 &descs[i].rs_dmamap); 772 if (rc != 0) 773 break; 774 } 775 return rc; 776 } 777 778 static inline void 779 rtw_rxdesc_dmamaps_destroy(bus_dma_tag_t dmat, struct rtw_rxsoft *descs, 780 u_int ndescs) 781 { 782 int i; 783 for (i = 0; i < ndescs; i++) { 784 if (descs[i].rs_dmamap != NULL) 785 bus_dmamap_destroy(dmat, descs[i].rs_dmamap); 786 } 787 } 788 789 static inline void 790 rtw_txdesc_dmamaps_destroy(bus_dma_tag_t dmat, struct rtw_txsoft *descs, 791 u_int ndescs) 792 { 793 int i; 794 for (i = 0; i < ndescs; i++) { 795 if (descs[i].ts_dmamap != NULL) 796 bus_dmamap_destroy(dmat, descs[i].ts_dmamap); 797 } 798 } 799 800 static inline void 801 rtw_srom_free(struct rtw_srom *sr) 802 { 803 sr->sr_size = 0; 804 if (sr->sr_content == NULL) 805 return; 806 free(sr->sr_content, M_DEVBUF); 807 sr->sr_content = NULL; 808 } 809 810 static void 811 rtw_srom_defaults(struct rtw_srom *sr, uint32_t *flags, 812 uint8_t *cs_threshold, enum rtw_rfchipid *rfchipid, uint32_t *rcr) 813 { 814 *flags |= (RTW_F_DIGPHY | RTW_F_ANTDIV); 815 *cs_threshold = RTW_SR_ENERGYDETTHR_DEFAULT; 816 *rcr |= RTW_RCR_ENCS1; 817 *rfchipid = RTW_RFCHIPID_PHILIPS; 818 } 819 820 static int 821 rtw_srom_parse(struct rtw_srom *sr, uint32_t *flags, uint8_t *cs_threshold, 822 enum rtw_rfchipid *rfchipid, uint32_t *rcr, enum rtw_locale *locale, 823 device_t dev) 824 { 825 int i; 826 const char *rfname, *paname; 827 char scratch[sizeof("unknown 0xXX")]; 828 uint16_t srom_version; 829 830 *flags &= ~(RTW_F_DIGPHY | RTW_F_DFLANTB | RTW_F_ANTDIV); 831 *rcr &= ~(RTW_RCR_ENCS1 | RTW_RCR_ENCS2); 832 833 srom_version = RTW_SR_GET16(sr, RTW_SR_VERSION); 834 835 if (srom_version <= 0x0101) { 836 aprint_error_dev(dev, 837 "SROM version %d.%d is not understood, " 838 "limping along with defaults\n", 839 srom_version >> 8, srom_version & 0xff); 840 rtw_srom_defaults(sr, flags, cs_threshold, rfchipid, rcr); 841 return 0; 842 } else { 843 aprint_verbose_dev(dev, "SROM version %d.%d\n", 844 srom_version >> 8, srom_version & 0xff); 845 } 846 847 uint8_t mac[IEEE80211_ADDR_LEN]; 848 for (i = 0; i < IEEE80211_ADDR_LEN; i++) 849 mac[i] = RTW_SR_GET(sr, RTW_SR_MAC + i); 850 __USE(mac); 851 852 RTW_DPRINTF(RTW_DEBUG_ATTACH, 853 ("%s: EEPROM MAC %s\n", device_xname(dev), ether_sprintf(mac))); 854 855 *cs_threshold = RTW_SR_GET(sr, RTW_SR_ENERGYDETTHR); 856 857 if ((RTW_SR_GET(sr, RTW_SR_CONFIG2) & RTW_CONFIG2_ANT) != 0) 858 *flags |= RTW_F_ANTDIV; 859 860 /* Note well: the sense of the RTW_SR_RFPARM_DIGPHY bit seems 861 * to be reversed. 862 */ 863 if ((RTW_SR_GET(sr, RTW_SR_RFPARM) & RTW_SR_RFPARM_DIGPHY) == 0) 864 *flags |= RTW_F_DIGPHY; 865 if ((RTW_SR_GET(sr, RTW_SR_RFPARM) & RTW_SR_RFPARM_DFLANTB) != 0) 866 *flags |= RTW_F_DFLANTB; 867 868 *rcr |= __SHIFTIN(__SHIFTOUT(RTW_SR_GET(sr, RTW_SR_RFPARM), 869 RTW_SR_RFPARM_CS_MASK), RTW_RCR_ENCS1); 870 871 if ((RTW_SR_GET(sr, RTW_SR_CONFIG0) & RTW_CONFIG0_WEP104) != 0) 872 *flags |= RTW_C_RXWEP_104; 873 874 *flags |= RTW_C_RXWEP_40; /* XXX */ 875 876 *rfchipid = RTW_SR_GET(sr, RTW_SR_RFCHIPID); 877 switch (*rfchipid) { 878 case RTW_RFCHIPID_GCT: /* this combo seen in the wild */ 879 rfname = "GCT GRF5101"; 880 paname = "Winspring WS9901"; 881 break; 882 case RTW_RFCHIPID_MAXIM: 883 rfname = "Maxim MAX2820"; /* guess */ 884 paname = "Maxim MAX2422"; /* guess */ 885 break; 886 case RTW_RFCHIPID_INTERSIL: 887 rfname = "Intersil HFA3873"; /* guess */ 888 paname = "Intersil <unknown>"; 889 break; 890 case RTW_RFCHIPID_PHILIPS: /* this combo seen in the wild */ 891 rfname = "Philips SA2400A"; 892 paname = "Philips SA2411"; 893 break; 894 case RTW_RFCHIPID_RFMD: 895 /* this is the same front-end as an atw(4)! */ 896 rfname = "RFMD RF2948B, " /* mentioned in Realtek docs */ 897 "LNA: RFMD RF2494, " /* mentioned in Realtek docs */ 898 "SYN: Silicon Labs Si4126"; /* inferred from 899 * reference driver 900 */ 901 paname = "RFMD RF2189"; /* mentioned in Realtek docs */ 902 break; 903 case RTW_RFCHIPID_RESERVED: 904 rfname = paname = "reserved"; 905 break; 906 default: 907 snprintf(scratch, sizeof(scratch), "unknown 0x%02x", *rfchipid); 908 rfname = paname = scratch; 909 } 910 aprint_normal_dev(dev, "RF: %s, PA: %s\n", rfname, paname); 911 912 switch (RTW_SR_GET(sr, RTW_SR_CONFIG0) & RTW_CONFIG0_GL_MASK) { 913 case RTW_CONFIG0_GL_USA: 914 case _RTW_CONFIG0_GL_USA: 915 *locale = RTW_LOCALE_USA; 916 break; 917 case RTW_CONFIG0_GL_EUROPE: 918 *locale = RTW_LOCALE_EUROPE; 919 break; 920 case RTW_CONFIG0_GL_JAPAN: 921 *locale = RTW_LOCALE_JAPAN; 922 break; 923 default: 924 *locale = RTW_LOCALE_UNKNOWN; 925 break; 926 } 927 return 0; 928 } 929 930 /* Returns -1 on failure. */ 931 static int 932 rtw_srom_read(struct rtw_regs *regs, uint32_t flags, struct rtw_srom *sr, 933 device_t dev) 934 { 935 int rc; 936 struct seeprom_descriptor sd; 937 uint8_t ecr; 938 939 (void)memset(&sd, 0, sizeof(sd)); 940 941 ecr = RTW_READ8(regs, RTW_9346CR); 942 943 if ((flags & RTW_F_9356SROM) != 0) { 944 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: 93c56 SROM\n", 945 device_xname(dev))); 946 sr->sr_size = 256; 947 sd.sd_chip = C56_66; 948 } else { 949 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("%s: 93c46 SROM\n", 950 device_xname(dev))); 951 sr->sr_size = 128; 952 sd.sd_chip = C46; 953 } 954 955 ecr &= ~(RTW_9346CR_EEDI | RTW_9346CR_EEDO | RTW_9346CR_EESK | 956 RTW_9346CR_EEM_MASK | RTW_9346CR_EECS); 957 ecr |= RTW_9346CR_EEM_PROGRAM; 958 959 RTW_WRITE8(regs, RTW_9346CR, ecr); 960 961 sr->sr_content = malloc(sr->sr_size, M_DEVBUF, M_NOWAIT); 962 963 if (sr->sr_content == NULL) { 964 aprint_error_dev(dev, "unable to allocate SROM buffer\n"); 965 return ENOMEM; 966 } 967 968 (void)memset(sr->sr_content, 0, sr->sr_size); 969 970 /* RTL8180 has a single 8-bit register for controlling the 971 * 93cx6 SROM. There is no "ready" bit. The RTL8180 972 * input/output sense is the reverse of read_seeprom's. 973 */ 974 sd.sd_tag = regs->r_bt; 975 sd.sd_bsh = regs->r_bh; 976 sd.sd_regsize = 1; 977 sd.sd_control_offset = RTW_9346CR; 978 sd.sd_status_offset = RTW_9346CR; 979 sd.sd_dataout_offset = RTW_9346CR; 980 sd.sd_CK = RTW_9346CR_EESK; 981 sd.sd_CS = RTW_9346CR_EECS; 982 sd.sd_DI = RTW_9346CR_EEDO; 983 sd.sd_DO = RTW_9346CR_EEDI; 984 /* make read_seeprom enter EEPROM read/write mode */ 985 sd.sd_MS = ecr; 986 sd.sd_RDY = 0; 987 988 /* TBD bus barriers */ 989 if (!read_seeprom(&sd, sr->sr_content, 0, sr->sr_size/2)) { 990 aprint_error_dev(dev, "could not read SROM\n"); 991 free(sr->sr_content, M_DEVBUF); 992 sr->sr_content = NULL; 993 return -1; /* XXX */ 994 } 995 996 /* end EEPROM read/write mode */ 997 RTW_WRITE8(regs, RTW_9346CR, 998 (ecr & ~RTW_9346CR_EEM_MASK) | RTW_9346CR_EEM_NORMAL); 999 RTW_WBRW(regs, RTW_9346CR, RTW_9346CR); 1000 1001 if ((rc = rtw_recall_eeprom(regs, dev)) != 0) 1002 return rc; 1003 1004 #ifdef RTW_DEBUG 1005 { 1006 int i; 1007 RTW_DPRINTF(RTW_DEBUG_ATTACH, 1008 ("\n%s: serial ROM:\n\t", device_xname(dev))); 1009 for (i = 0; i < sr->sr_size/2; i++) { 1010 if (((i % 8) == 0) && (i != 0)) 1011 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("\n\t")); 1012 RTW_DPRINTF(RTW_DEBUG_ATTACH, 1013 (" %04x", sr->sr_content[i])); 1014 } 1015 RTW_DPRINTF(RTW_DEBUG_ATTACH, ("\n")); 1016 } 1017 #endif /* RTW_DEBUG */ 1018 return 0; 1019 } 1020 1021 static void 1022 rtw_set_rfprog(struct rtw_regs *regs, enum rtw_rfchipid rfchipid, 1023 device_t dev) 1024 { 1025 uint8_t cfg4; 1026 const char *method; 1027 1028 cfg4 = RTW_READ8(regs, RTW_CONFIG4) & ~RTW_CONFIG4_RFTYPE_MASK; 1029 1030 switch (rfchipid) { 1031 default: 1032 cfg4 |= __SHIFTIN(rtw_rfprog_fallback, RTW_CONFIG4_RFTYPE_MASK); 1033 method = "fallback"; 1034 break; 1035 case RTW_RFCHIPID_INTERSIL: 1036 cfg4 |= RTW_CONFIG4_RFTYPE_INTERSIL; 1037 method = "Intersil"; 1038 break; 1039 case RTW_RFCHIPID_PHILIPS: 1040 cfg4 |= RTW_CONFIG4_RFTYPE_PHILIPS; 1041 method = "Philips"; 1042 break; 1043 case RTW_RFCHIPID_GCT: /* XXX a guess */ 1044 case RTW_RFCHIPID_RFMD: 1045 cfg4 |= RTW_CONFIG4_RFTYPE_RFMD; 1046 method = "RFMD"; 1047 break; 1048 } 1049 1050 RTW_WRITE8(regs, RTW_CONFIG4, cfg4); 1051 1052 RTW_WBR(regs, RTW_CONFIG4, RTW_CONFIG4); 1053 1054 #ifdef RTW_DEBUG 1055 RTW_DPRINTF(RTW_DEBUG_INIT, 1056 ("%s: %s RF programming method, %#02x\n", device_xname(dev), method, 1057 RTW_READ8(regs, RTW_CONFIG4))); 1058 #else 1059 __USE(method); 1060 #endif 1061 } 1062 1063 static inline void 1064 rtw_init_channels(enum rtw_locale locale, 1065 struct ieee80211_channel (*chans)[IEEE80211_CHAN_MAX+1], device_t dev) 1066 { 1067 int i; 1068 const char *name = NULL; 1069 #define ADD_CHANNEL(_chans, _chan) do { \ 1070 (*_chans)[_chan].ic_flags = IEEE80211_CHAN_B; \ 1071 (*_chans)[_chan].ic_freq = \ 1072 ieee80211_ieee2mhz(_chan, (*_chans)[_chan].ic_flags);\ 1073 } while (0) 1074 1075 switch (locale) { 1076 case RTW_LOCALE_USA: /* 1-11 */ 1077 name = "USA"; 1078 for (i = 1; i <= 11; i++) 1079 ADD_CHANNEL(chans, i); 1080 break; 1081 case RTW_LOCALE_JAPAN: /* 1-14 */ 1082 name = "Japan"; 1083 ADD_CHANNEL(chans, 14); 1084 for (i = 1; i <= 14; i++) 1085 ADD_CHANNEL(chans, i); 1086 break; 1087 case RTW_LOCALE_EUROPE: /* 1-13 */ 1088 name = "Europe"; 1089 for (i = 1; i <= 13; i++) 1090 ADD_CHANNEL(chans, i); 1091 break; 1092 default: /* 10-11 allowed by most countries */ 1093 name = "<unknown>"; 1094 for (i = 10; i <= 11; i++) 1095 ADD_CHANNEL(chans, i); 1096 break; 1097 } 1098 aprint_normal_dev(dev, "Geographic Location %s\n", name); 1099 #undef ADD_CHANNEL 1100 } 1101 1102 1103 static inline void 1104 rtw_identify_country(struct rtw_regs *regs, enum rtw_locale *locale) 1105 { 1106 uint8_t cfg0 = RTW_READ8(regs, RTW_CONFIG0); 1107 1108 switch (cfg0 & RTW_CONFIG0_GL_MASK) { 1109 case RTW_CONFIG0_GL_USA: 1110 case _RTW_CONFIG0_GL_USA: 1111 *locale = RTW_LOCALE_USA; 1112 break; 1113 case RTW_CONFIG0_GL_JAPAN: 1114 *locale = RTW_LOCALE_JAPAN; 1115 break; 1116 case RTW_CONFIG0_GL_EUROPE: 1117 *locale = RTW_LOCALE_EUROPE; 1118 break; 1119 default: 1120 *locale = RTW_LOCALE_UNKNOWN; 1121 break; 1122 } 1123 } 1124 1125 static inline int 1126 rtw_identify_sta(struct rtw_regs *regs, uint8_t (*addr)[IEEE80211_ADDR_LEN], 1127 device_t dev) 1128 { 1129 static const uint8_t empty_macaddr[IEEE80211_ADDR_LEN] = { 1130 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 1131 }; 1132 uint32_t idr0 = RTW_READ(regs, RTW_IDR0), 1133 idr1 = RTW_READ(regs, RTW_IDR1); 1134 1135 (*addr)[0] = __SHIFTOUT(idr0, __BITS(0, 7)); 1136 (*addr)[1] = __SHIFTOUT(idr0, __BITS(8, 15)); 1137 (*addr)[2] = __SHIFTOUT(idr0, __BITS(16, 23)); 1138 (*addr)[3] = __SHIFTOUT(idr0, __BITS(24, 31)); 1139 1140 (*addr)[4] = __SHIFTOUT(idr1, __BITS(0, 7)); 1141 (*addr)[5] = __SHIFTOUT(idr1, __BITS(8, 15)); 1142 1143 if (IEEE80211_ADDR_EQ(addr, empty_macaddr)) { 1144 aprint_error_dev(dev, 1145 "could not get mac address, attach failed\n"); 1146 return ENXIO; 1147 } 1148 1149 aprint_normal_dev(dev, "802.11 address %s\n", ether_sprintf(*addr)); 1150 1151 return 0; 1152 } 1153 1154 static uint8_t 1155 rtw_chan2txpower(struct rtw_srom *sr, struct ieee80211com *ic, 1156 struct ieee80211_channel *chan) 1157 { 1158 u_int idx = RTW_SR_TXPOWER1 + ieee80211_chan2ieee(ic, chan) - 1; 1159 KASSERT(idx >= RTW_SR_TXPOWER1 && idx <= RTW_SR_TXPOWER14); 1160 return RTW_SR_GET(sr, idx); 1161 } 1162 1163 static void 1164 rtw_txdesc_blk_init_all(struct rtw_txdesc_blk *tdb) 1165 { 1166 int pri; 1167 /* nfree: the number of free descriptors in each ring. 1168 * The beacon ring is a special case: I do not let the 1169 * driver use all of the descriptors on the beacon ring. 1170 * The reasons are two-fold: 1171 * 1172 * (1) A BEACON descriptor's OWN bit is (apparently) not 1173 * updated, so the driver cannot easily know if the descriptor 1174 * belongs to it, or if it is racing the NIC. If the NIC 1175 * does not OWN every descriptor, then the driver can safely 1176 * update the descriptors when RTW_TBDA points at tdb_next. 1177 * 1178 * (2) I hope that the NIC will process more than one BEACON 1179 * descriptor in a single beacon interval, since that will 1180 * enable multiple-BSS support. Since the NIC does not 1181 * clear the OWN bit, there is no natural place for it to 1182 * stop processing BEACON desciptors. Maybe it will *not* 1183 * stop processing them! I do not want to chance the NIC 1184 * looping around and around a saturated beacon ring, so 1185 * I will leave one descriptor unOWNed at all times. 1186 */ 1187 u_int nfree[RTW_NTXPRI] = 1188 {RTW_NTXDESCLO, RTW_NTXDESCMD, RTW_NTXDESCHI, 1189 RTW_NTXDESCBCN - 1}; 1190 1191 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1192 tdb[pri].tdb_nfree = nfree[pri]; 1193 tdb[pri].tdb_next = 0; 1194 } 1195 } 1196 1197 static int 1198 rtw_txsoft_blk_init(struct rtw_txsoft_blk *tsb) 1199 { 1200 int i; 1201 struct rtw_txsoft *ts; 1202 1203 SIMPLEQ_INIT(&tsb->tsb_dirtyq); 1204 SIMPLEQ_INIT(&tsb->tsb_freeq); 1205 for (i = 0; i < tsb->tsb_ndesc; i++) { 1206 ts = &tsb->tsb_desc[i]; 1207 ts->ts_mbuf = NULL; 1208 SIMPLEQ_INSERT_TAIL(&tsb->tsb_freeq, ts, ts_q); 1209 } 1210 tsb->tsb_tx_timer = 0; 1211 return 0; 1212 } 1213 1214 static void 1215 rtw_txsoft_blk_init_all(struct rtw_txsoft_blk *tsb) 1216 { 1217 int pri; 1218 for (pri = 0; pri < RTW_NTXPRI; pri++) 1219 rtw_txsoft_blk_init(&tsb[pri]); 1220 } 1221 1222 static inline void 1223 rtw_rxdescs_sync(struct rtw_rxdesc_blk *rdb, int desc0, int nsync, int ops) 1224 { 1225 KASSERT(nsync <= rdb->rdb_ndesc); 1226 /* sync to end of ring */ 1227 if (desc0 + nsync > rdb->rdb_ndesc) { 1228 bus_dmamap_sync(rdb->rdb_dmat, rdb->rdb_dmamap, 1229 offsetof(struct rtw_descs, hd_rx[desc0]), 1230 sizeof(struct rtw_rxdesc) * (rdb->rdb_ndesc - desc0), ops); 1231 nsync -= (rdb->rdb_ndesc - desc0); 1232 desc0 = 0; 1233 } 1234 1235 KASSERT(desc0 < rdb->rdb_ndesc); 1236 KASSERT(nsync <= rdb->rdb_ndesc); 1237 KASSERT(desc0 + nsync <= rdb->rdb_ndesc); 1238 1239 /* sync what remains */ 1240 bus_dmamap_sync(rdb->rdb_dmat, rdb->rdb_dmamap, 1241 offsetof(struct rtw_descs, hd_rx[desc0]), 1242 sizeof(struct rtw_rxdesc) * nsync, ops); 1243 } 1244 1245 static void 1246 rtw_txdescs_sync(struct rtw_txdesc_blk *tdb, u_int desc0, u_int nsync, int ops) 1247 { 1248 /* sync to end of ring */ 1249 if (desc0 + nsync > tdb->tdb_ndesc) { 1250 bus_dmamap_sync(tdb->tdb_dmat, tdb->tdb_dmamap, 1251 tdb->tdb_ofs + sizeof(struct rtw_txdesc) * desc0, 1252 sizeof(struct rtw_txdesc) * (tdb->tdb_ndesc - desc0), 1253 ops); 1254 nsync -= (tdb->tdb_ndesc - desc0); 1255 desc0 = 0; 1256 } 1257 1258 /* sync what remains */ 1259 bus_dmamap_sync(tdb->tdb_dmat, tdb->tdb_dmamap, 1260 tdb->tdb_ofs + sizeof(struct rtw_txdesc) * desc0, 1261 sizeof(struct rtw_txdesc) * nsync, ops); 1262 } 1263 1264 static void 1265 rtw_txdescs_sync_all(struct rtw_txdesc_blk *tdb) 1266 { 1267 int pri; 1268 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1269 rtw_txdescs_sync(&tdb[pri], 0, tdb[pri].tdb_ndesc, 1270 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1271 } 1272 } 1273 1274 static void 1275 rtw_rxbufs_release(bus_dma_tag_t dmat, struct rtw_rxsoft *desc) 1276 { 1277 int i; 1278 struct rtw_rxsoft *rs; 1279 1280 for (i = 0; i < RTW_RXQLEN; i++) { 1281 rs = &desc[i]; 1282 if (rs->rs_mbuf == NULL) 1283 continue; 1284 bus_dmamap_sync(dmat, rs->rs_dmamap, 0, 1285 rs->rs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1286 bus_dmamap_unload(dmat, rs->rs_dmamap); 1287 m_freem(rs->rs_mbuf); 1288 rs->rs_mbuf = NULL; 1289 } 1290 } 1291 1292 static inline int 1293 rtw_rxsoft_alloc(bus_dma_tag_t dmat, struct rtw_rxsoft *rs) 1294 { 1295 int rc; 1296 struct mbuf *m; 1297 1298 MGETHDR(m, M_DONTWAIT, MT_DATA); 1299 if (m == NULL) 1300 return ENOBUFS; 1301 1302 MCLGET(m, M_DONTWAIT); 1303 if ((m->m_flags & M_EXT) == 0) { 1304 m_freem(m); 1305 return ENOBUFS; 1306 } 1307 1308 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size; 1309 1310 if (rs->rs_mbuf != NULL) 1311 bus_dmamap_unload(dmat, rs->rs_dmamap); 1312 1313 rs->rs_mbuf = NULL; 1314 1315 rc = bus_dmamap_load_mbuf(dmat, rs->rs_dmamap, m, BUS_DMA_NOWAIT); 1316 if (rc != 0) { 1317 m_freem(m); 1318 return -1; 1319 } 1320 1321 rs->rs_mbuf = m; 1322 1323 return 0; 1324 } 1325 1326 static int 1327 rtw_rxsoft_init_all(bus_dma_tag_t dmat, struct rtw_rxsoft *desc, 1328 int *ndesc, device_t dev) 1329 { 1330 int i, rc = 0; 1331 struct rtw_rxsoft *rs; 1332 1333 for (i = 0; i < RTW_RXQLEN; i++) { 1334 rs = &desc[i]; 1335 /* we're in rtw_init, so there should be no mbufs allocated */ 1336 KASSERT(rs->rs_mbuf == NULL); 1337 #ifdef RTW_DEBUG 1338 if (i == rtw_rxbufs_limit) { 1339 aprint_error_dev(dev, "TEST hit %d-buffer limit\n", i); 1340 rc = ENOBUFS; 1341 break; 1342 } 1343 #endif /* RTW_DEBUG */ 1344 if ((rc = rtw_rxsoft_alloc(dmat, rs)) != 0) { 1345 aprint_error_dev(dev, 1346 "rtw_rxsoft_alloc failed, %d buffers, rc %d\n", 1347 i, rc); 1348 break; 1349 } 1350 } 1351 *ndesc = i; 1352 return rc; 1353 } 1354 1355 static inline void 1356 rtw_rxdesc_init(struct rtw_rxdesc_blk *rdb, struct rtw_rxsoft *rs, 1357 int idx, int kick) 1358 { 1359 int is_last = (idx == rdb->rdb_ndesc - 1); 1360 uint32_t ctl, octl, obuf; 1361 struct rtw_rxdesc *rd = &rdb->rdb_desc[idx]; 1362 1363 /* sync the mbuf before the descriptor */ 1364 bus_dmamap_sync(rdb->rdb_dmat, rs->rs_dmamap, 0, 1365 rs->rs_dmamap->dm_mapsize, BUS_DMASYNC_PREREAD); 1366 1367 obuf = rd->rd_buf; 1368 rd->rd_buf = htole32(rs->rs_dmamap->dm_segs[0].ds_addr); 1369 1370 ctl = __SHIFTIN(rs->rs_mbuf->m_len, RTW_RXCTL_LENGTH_MASK) | 1371 RTW_RXCTL_OWN | RTW_RXCTL_FS | RTW_RXCTL_LS; 1372 1373 if (is_last) 1374 ctl |= RTW_RXCTL_EOR; 1375 1376 octl = rd->rd_ctl; 1377 rd->rd_ctl = htole32(ctl); 1378 1379 #ifdef RTW_DEBUG 1380 RTW_DPRINTF( 1381 kick ? (RTW_DEBUG_RECV_DESC | RTW_DEBUG_IO_KICK) 1382 : RTW_DEBUG_RECV_DESC, 1383 ("%s: rd %p buf %08x -> %08x ctl %08x -> %08x\n", __func__, rd, 1384 le32toh(obuf), le32toh(rd->rd_buf), le32toh(octl), 1385 le32toh(rd->rd_ctl))); 1386 #else 1387 __USE(octl); 1388 __USE(obuf); 1389 #endif 1390 1391 /* sync the descriptor */ 1392 bus_dmamap_sync(rdb->rdb_dmat, rdb->rdb_dmamap, 1393 RTW_DESC_OFFSET(hd_rx, idx), sizeof(struct rtw_rxdesc), 1394 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1395 } 1396 1397 static void 1398 rtw_rxdesc_init_all(struct rtw_rxdesc_blk *rdb, struct rtw_rxsoft *ctl, int kick) 1399 { 1400 int i; 1401 struct rtw_rxsoft *rs; 1402 1403 for (i = 0; i < rdb->rdb_ndesc; i++) { 1404 rs = &ctl[i]; 1405 rtw_rxdesc_init(rdb, rs, i, kick); 1406 } 1407 } 1408 1409 static void 1410 rtw_io_enable(struct rtw_softc *sc, uint8_t flags, int enable) 1411 { 1412 struct rtw_regs *regs = &sc->sc_regs; 1413 uint8_t cr; 1414 1415 RTW_DPRINTF(RTW_DEBUG_IOSTATE, ("%s: %s 0x%02x\n", __func__, 1416 enable ? "enable" : "disable", flags)); 1417 1418 cr = RTW_READ8(regs, RTW_CR); 1419 1420 /* XXX reference source does not enable MULRW */ 1421 /* enable PCI Read/Write Multiple */ 1422 cr |= RTW_CR_MULRW; 1423 1424 /* The receive engine will always start at RDSAR. */ 1425 if (enable && (flags & ~cr & RTW_CR_RE)) { 1426 struct rtw_rxdesc_blk *rdb; 1427 rdb = &sc->sc_rxdesc_blk; 1428 rdb->rdb_next = 0; 1429 } 1430 1431 RTW_RBW(regs, RTW_CR, RTW_CR); /* XXX paranoia? */ 1432 if (enable) 1433 cr |= flags; 1434 else 1435 cr &= ~flags; 1436 RTW_WRITE8(regs, RTW_CR, cr); 1437 RTW_SYNC(regs, RTW_CR, RTW_CR); 1438 1439 #ifdef RTW_DIAG 1440 if (cr & RTW_CR_TE) 1441 rtw_txring_fixup(sc, __func__, __LINE__); 1442 #endif 1443 if (cr & RTW_CR_TE) { 1444 rtw_tx_kick(&sc->sc_regs, 1445 RTW_TPPOLL_HPQ | RTW_TPPOLL_NPQ | RTW_TPPOLL_LPQ); 1446 } 1447 } 1448 1449 static void 1450 rtw_intr_rx(struct rtw_softc *sc, uint16_t isr) 1451 { 1452 #define IS_BEACON(__fc0) \ 1453 ((__fc0 & (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) ==\ 1454 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_BEACON)) 1455 1456 static const int ratetbl[4] = {2, 4, 11, 22}; /* convert rates: 1457 * hardware -> net80211 1458 */ 1459 u_int next, nproc = 0; 1460 int hwrate, len, rate, rssi, sq, s; 1461 uint32_t hrssi, hstat, htsfth, htsftl; 1462 struct rtw_rxdesc *rd; 1463 struct rtw_rxsoft *rs; 1464 struct rtw_rxdesc_blk *rdb; 1465 struct mbuf *m; 1466 struct ifnet *ifp = &sc->sc_if; 1467 1468 struct ieee80211_node *ni; 1469 struct ieee80211_frame_min *wh; 1470 1471 rdb = &sc->sc_rxdesc_blk; 1472 1473 for (next = rdb->rdb_next; ; next = rdb->rdb_next) { 1474 KASSERT(next < rdb->rdb_ndesc); 1475 1476 rtw_rxdescs_sync(rdb, next, 1, 1477 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1478 rd = &rdb->rdb_desc[next]; 1479 rs = &sc->sc_rxsoft[next]; 1480 1481 hstat = le32toh(rd->rd_stat); 1482 hrssi = le32toh(rd->rd_rssi); 1483 htsfth = le32toh(rd->rd_tsfth); 1484 htsftl = le32toh(rd->rd_tsftl); 1485 1486 RTW_DPRINTF(RTW_DEBUG_RECV_DESC, 1487 ("%s: rxdesc[%d] hstat %08x hrssi %08x htsft %08x%08x\n", 1488 __func__, next, hstat, hrssi, htsfth, htsftl)); 1489 1490 ++nproc; 1491 1492 /* still belongs to NIC */ 1493 if ((hstat & RTW_RXSTAT_OWN) != 0) { 1494 rtw_rxdescs_sync(rdb, next, 1, BUS_DMASYNC_PREREAD); 1495 break; 1496 } 1497 1498 /* ieee80211_input() might reset the receive engine 1499 * (e.g. by indirectly calling rtw_tune()), so save 1500 * the next pointer here and retrieve it again on 1501 * the next round. 1502 */ 1503 rdb->rdb_next = (next + 1) % rdb->rdb_ndesc; 1504 1505 #ifdef RTW_DEBUG 1506 #define PRINTSTAT(flag) do { \ 1507 if ((hstat & flag) != 0) { \ 1508 printf("%s" #flag, delim); \ 1509 delim = ","; \ 1510 } \ 1511 } while (0) 1512 if ((rtw_debug & RTW_DEBUG_RECV_DESC) != 0) { 1513 const char *delim = "<"; 1514 printf("%s: ", device_xname(sc->sc_dev)); 1515 if ((hstat & RTW_RXSTAT_DEBUG) != 0) { 1516 printf("status %08x", hstat); 1517 PRINTSTAT(RTW_RXSTAT_SPLCP); 1518 PRINTSTAT(RTW_RXSTAT_MAR); 1519 PRINTSTAT(RTW_RXSTAT_PAR); 1520 PRINTSTAT(RTW_RXSTAT_BAR); 1521 PRINTSTAT(RTW_RXSTAT_PWRMGT); 1522 PRINTSTAT(RTW_RXSTAT_CRC32); 1523 PRINTSTAT(RTW_RXSTAT_ICV); 1524 printf(">, "); 1525 } 1526 } 1527 #endif /* RTW_DEBUG */ 1528 1529 if ((hstat & RTW_RXSTAT_IOERROR) != 0) { 1530 aprint_error_dev(sc->sc_dev, 1531 "DMA error/FIFO overflow %08" PRIx32 ", " 1532 "rx descriptor %d\n", hstat, next); 1533 ifp->if_ierrors++; 1534 goto next; 1535 } 1536 1537 len = __SHIFTOUT(hstat, RTW_RXSTAT_LENGTH_MASK); 1538 if (len < IEEE80211_MIN_LEN) { 1539 sc->sc_ic.ic_stats.is_rx_tooshort++; 1540 goto next; 1541 } 1542 if (len > rs->rs_mbuf->m_len) { 1543 aprint_error_dev(sc->sc_dev, 1544 "rx frame too long, %d > %d, %08" PRIx32 1545 ", desc %d\n", 1546 len, rs->rs_mbuf->m_len, hstat, next); 1547 ifp->if_ierrors++; 1548 goto next; 1549 } 1550 1551 hwrate = __SHIFTOUT(hstat, RTW_RXSTAT_RATE_MASK); 1552 if (hwrate >= __arraycount(ratetbl)) { 1553 aprint_error_dev(sc->sc_dev, 1554 "unknown rate #%" __PRIuBITS "\n", 1555 __SHIFTOUT(hstat, RTW_RXSTAT_RATE_MASK)); 1556 ifp->if_ierrors++; 1557 goto next; 1558 } 1559 rate = ratetbl[hwrate]; 1560 1561 #ifdef RTW_DEBUG 1562 RTW_DPRINTF(RTW_DEBUG_RECV_DESC, 1563 ("rate %d.%d Mb/s, time %08x%08x\n", (rate * 5) / 10, 1564 (rate * 5) % 10, htsfth, htsftl)); 1565 #endif /* RTW_DEBUG */ 1566 1567 /* if bad flags, skip descriptor */ 1568 if ((hstat & RTW_RXSTAT_ONESEG) != RTW_RXSTAT_ONESEG) { 1569 aprint_error_dev(sc->sc_dev, "too many rx segments, " 1570 "next=%d, %08" PRIx32 "\n", next, hstat); 1571 goto next; 1572 } 1573 1574 bus_dmamap_sync(sc->sc_dmat, rs->rs_dmamap, 0, 1575 rs->rs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1576 1577 m = rs->rs_mbuf; 1578 1579 /* if temporarily out of memory, re-use mbuf */ 1580 switch (rtw_rxsoft_alloc(sc->sc_dmat, rs)) { 1581 case 0: 1582 break; 1583 case ENOBUFS: 1584 aprint_error_dev(sc->sc_dev, 1585 "rtw_rxsoft_alloc(, %d) failed, dropping packet\n", 1586 next); 1587 goto next; 1588 default: 1589 /* XXX shorten rx ring, instead? */ 1590 aprint_error_dev(sc->sc_dev, 1591 "could not load DMA map\n"); 1592 } 1593 1594 sq = __SHIFTOUT(hrssi, RTW_RXRSSI_SQ); 1595 1596 if (sc->sc_rfchipid == RTW_RFCHIPID_PHILIPS) 1597 rssi = UINT8_MAX - sq; 1598 else { 1599 rssi = __SHIFTOUT(hrssi, RTW_RXRSSI_IMR_RSSI); 1600 /* TBD find out each front-end's LNA gain in the 1601 * front-end's units 1602 */ 1603 if ((hrssi & RTW_RXRSSI_IMR_LNA) == 0) 1604 rssi |= 0x80; 1605 } 1606 1607 /* Note well: now we cannot recycle the rs_mbuf unless 1608 * we restore its original length. 1609 */ 1610 m_set_rcvif(m, ifp); 1611 m->m_pkthdr.len = m->m_len = len; 1612 1613 wh = mtod(m, struct ieee80211_frame_min *); 1614 1615 s = splnet(); 1616 1617 if (!IS_BEACON(wh->i_fc[0])) 1618 sc->sc_led_state.ls_event |= RTW_LED_S_RX; 1619 1620 sc->sc_tsfth = htsfth; 1621 1622 #ifdef RTW_DEBUG 1623 if ((ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == 1624 (IFF_DEBUG | IFF_LINK2)) { 1625 ieee80211_dump_pkt(mtod(m, uint8_t *), m->m_pkthdr.len, 1626 rate, rssi); 1627 } 1628 #endif /* RTW_DEBUG */ 1629 1630 if (sc->sc_radiobpf != NULL) { 1631 struct rtw_rx_radiotap_header *rr = &sc->sc_rxtap; 1632 1633 rr->rr_tsft = 1634 htole64(((uint64_t)htsfth << 32) | htsftl); 1635 1636 rr->rr_flags = IEEE80211_RADIOTAP_F_FCS; 1637 1638 if ((hstat & RTW_RXSTAT_SPLCP) != 0) 1639 rr->rr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 1640 if ((hstat & RTW_RXSTAT_CRC32) != 0) 1641 rr->rr_flags |= IEEE80211_RADIOTAP_F_BADFCS; 1642 1643 rr->rr_rate = rate; 1644 1645 if (sc->sc_rfchipid == RTW_RFCHIPID_PHILIPS) 1646 rr->rr_u.u_philips.p_antsignal = rssi; 1647 else { 1648 rr->rr_u.u_other.o_antsignal = rssi; 1649 rr->rr_u.u_other.o_barker_lock = 1650 htole16(UINT8_MAX - sq); 1651 } 1652 1653 bpf_mtap2(sc->sc_radiobpf, 1654 rr, sizeof(sc->sc_rxtapu), m, BPF_D_IN); 1655 } 1656 1657 if ((hstat & RTW_RXSTAT_RES) != 0) { 1658 m_freem(m); 1659 splx(s); 1660 goto next; 1661 } 1662 1663 /* CRC is included with the packet; trim it off. */ 1664 m_adj(m, -IEEE80211_CRC_LEN); 1665 1666 /* TBD use _MAR, _BAR, _PAR flags as hints to _find_rxnode? */ 1667 ni = ieee80211_find_rxnode(&sc->sc_ic, wh); 1668 ieee80211_input(&sc->sc_ic, m, ni, rssi, htsftl); 1669 ieee80211_free_node(ni); 1670 splx(s); 1671 next: 1672 rtw_rxdesc_init(rdb, rs, next, 0); 1673 } 1674 #undef IS_BEACON 1675 } 1676 1677 static void 1678 rtw_txsoft_release(bus_dma_tag_t dmat, struct ieee80211com *ic, 1679 struct rtw_txsoft *ts) 1680 { 1681 struct mbuf *m; 1682 struct ieee80211_node *ni; 1683 1684 m = ts->ts_mbuf; 1685 ni = ts->ts_ni; 1686 KASSERT(m != NULL); 1687 KASSERT(ni != NULL); 1688 ts->ts_mbuf = NULL; 1689 ts->ts_ni = NULL; 1690 1691 bus_dmamap_sync(dmat, ts->ts_dmamap, 0, ts->ts_dmamap->dm_mapsize, 1692 BUS_DMASYNC_POSTWRITE); 1693 bus_dmamap_unload(dmat, ts->ts_dmamap); 1694 m_freem(m); 1695 ieee80211_free_node(ni); 1696 } 1697 1698 static void 1699 rtw_txsofts_release(bus_dma_tag_t dmat, struct ieee80211com *ic, 1700 struct rtw_txsoft_blk *tsb) 1701 { 1702 struct rtw_txsoft *ts; 1703 1704 while ((ts = SIMPLEQ_FIRST(&tsb->tsb_dirtyq)) != NULL) { 1705 rtw_txsoft_release(dmat, ic, ts); 1706 SIMPLEQ_REMOVE_HEAD(&tsb->tsb_dirtyq, ts_q); 1707 SIMPLEQ_INSERT_TAIL(&tsb->tsb_freeq, ts, ts_q); 1708 } 1709 tsb->tsb_tx_timer = 0; 1710 } 1711 1712 static inline void 1713 rtw_collect_txpkt(struct rtw_softc *sc, struct rtw_txdesc_blk *tdb, 1714 struct rtw_txsoft *ts, int ndesc) 1715 { 1716 uint32_t hstat; 1717 int data_retry, rts_retry; 1718 struct rtw_txdesc *tdn; 1719 const char *condstring; 1720 struct ifnet *ifp = &sc->sc_if; 1721 1722 rtw_txsoft_release(sc->sc_dmat, &sc->sc_ic, ts); 1723 1724 tdb->tdb_nfree += ndesc; 1725 1726 tdn = &tdb->tdb_desc[ts->ts_last]; 1727 1728 hstat = le32toh(tdn->td_stat); 1729 rts_retry = __SHIFTOUT(hstat, RTW_TXSTAT_RTSRETRY_MASK); 1730 data_retry = __SHIFTOUT(hstat, RTW_TXSTAT_DRC_MASK); 1731 1732 ifp->if_collisions += rts_retry + data_retry; 1733 1734 if ((hstat & RTW_TXSTAT_TOK) != 0) 1735 condstring = "ok"; 1736 else { 1737 ifp->if_oerrors++; 1738 condstring = "error"; 1739 } 1740 1741 #ifdef RTW_DEBUG 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 #else 1747 __USE(condstring); 1748 #endif 1749 } 1750 1751 static void 1752 rtw_reset_oactive(struct rtw_softc *sc) 1753 { 1754 short oflags; 1755 int pri; 1756 struct rtw_txsoft_blk *tsb; 1757 struct rtw_txdesc_blk *tdb; 1758 oflags = sc->sc_if.if_flags; 1759 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1760 tsb = &sc->sc_txsoft_blk[pri]; 1761 tdb = &sc->sc_txdesc_blk[pri]; 1762 if (!SIMPLEQ_EMPTY(&tsb->tsb_freeq) && tdb->tdb_nfree > 0) 1763 sc->sc_if.if_flags &= ~IFF_OACTIVE; 1764 } 1765 if (oflags != sc->sc_if.if_flags) { 1766 DPRINTF(sc, RTW_DEBUG_OACTIVE, 1767 ("%s: reset OACTIVE\n", __func__)); 1768 } 1769 } 1770 1771 /* Collect transmitted packets. */ 1772 static bool 1773 rtw_collect_txring(struct rtw_softc *sc, struct rtw_txsoft_blk *tsb, 1774 struct rtw_txdesc_blk *tdb, int force) 1775 { 1776 bool collected = false; 1777 int ndesc; 1778 struct rtw_txsoft *ts; 1779 1780 #ifdef RTW_DEBUG 1781 rtw_dump_rings(sc); 1782 #endif 1783 1784 while ((ts = SIMPLEQ_FIRST(&tsb->tsb_dirtyq)) != NULL) { 1785 /* If we're clearing a failed transmission, only clear 1786 up to the last packet the hardware has processed. */ 1787 if (ts->ts_first == rtw_txring_next(&sc->sc_regs, tdb)) 1788 break; 1789 1790 ndesc = 1 + ts->ts_last - ts->ts_first; 1791 if (ts->ts_last < ts->ts_first) 1792 ndesc += tdb->tdb_ndesc; 1793 1794 KASSERT(ndesc > 0); 1795 1796 rtw_txdescs_sync(tdb, ts->ts_first, ndesc, 1797 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1798 1799 if (force) { 1800 int next; 1801 #ifdef RTW_DIAG 1802 printf("%s: clearing packet, stats", __func__); 1803 #endif 1804 for (next = ts->ts_first; ; 1805 next = RTW_NEXT_IDX(tdb, next)) { 1806 #ifdef RTW_DIAG 1807 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)); 1808 #endif 1809 tdb->tdb_desc[next].td_stat &= 1810 ~htole32(RTW_TXSTAT_OWN); 1811 if (next == ts->ts_last) 1812 break; 1813 } 1814 rtw_txdescs_sync(tdb, ts->ts_first, ndesc, 1815 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1816 #ifdef RTW_DIAG 1817 next = RTW_NEXT_IDX(tdb, next); 1818 printf(" -> end %u stat %" PRIx32 ", was %u\n", next, 1819 le32toh(tdb->tdb_desc[next].td_stat), 1820 rtw_txring_next(&sc->sc_regs, tdb)); 1821 #endif 1822 } else if ((tdb->tdb_desc[ts->ts_last].td_stat & 1823 htole32(RTW_TXSTAT_OWN)) != 0) { 1824 rtw_txdescs_sync(tdb, ts->ts_last, 1, 1825 BUS_DMASYNC_PREREAD); 1826 break; 1827 } 1828 1829 collected = true; 1830 1831 rtw_collect_txpkt(sc, tdb, ts, ndesc); 1832 SIMPLEQ_REMOVE_HEAD(&tsb->tsb_dirtyq, ts_q); 1833 SIMPLEQ_INSERT_TAIL(&tsb->tsb_freeq, ts, ts_q); 1834 } 1835 1836 /* no more pending transmissions, cancel watchdog */ 1837 if (ts == NULL) 1838 tsb->tsb_tx_timer = 0; 1839 rtw_reset_oactive(sc); 1840 1841 return collected; 1842 } 1843 1844 static void 1845 rtw_intr_tx(struct rtw_softc *sc, uint16_t isr) 1846 { 1847 int pri, s; 1848 struct rtw_txsoft_blk *tsb; 1849 struct rtw_txdesc_blk *tdb; 1850 struct ifnet *ifp = &sc->sc_if; 1851 1852 s = splnet(); 1853 1854 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1855 tsb = &sc->sc_txsoft_blk[pri]; 1856 tdb = &sc->sc_txdesc_blk[pri]; 1857 rtw_collect_txring(sc, tsb, tdb, 0); 1858 } 1859 1860 if ((isr & RTW_INTR_TX) != 0) 1861 rtw_start(ifp); /* in softint */ 1862 1863 splx(s); 1864 } 1865 1866 static void 1867 rtw_intr_beacon(struct rtw_softc *sc, uint16_t isr) 1868 { 1869 u_int next; 1870 uint32_t tsfth, tsftl; 1871 struct ieee80211com *ic; 1872 struct rtw_txdesc_blk *tdb = &sc->sc_txdesc_blk[RTW_TXPRIBCN]; 1873 struct rtw_txsoft_blk *tsb = &sc->sc_txsoft_blk[RTW_TXPRIBCN]; 1874 struct mbuf *m; 1875 int s; 1876 1877 s = splnet(); 1878 1879 tsfth = RTW_READ(&sc->sc_regs, RTW_TSFTRH); 1880 tsftl = RTW_READ(&sc->sc_regs, RTW_TSFTRL); 1881 1882 if ((isr & (RTW_INTR_TBDOK | RTW_INTR_TBDER)) != 0) { 1883 next = rtw_txring_next(&sc->sc_regs, tdb); 1884 #ifdef RTW_DEBUG 1885 RTW_DPRINTF(RTW_DEBUG_BEACON, 1886 ("%s: beacon ring %sprocessed, isr = %#04" PRIx16 1887 ", next %u expected %u, %" PRIu64 "\n", __func__, 1888 (next == tdb->tdb_next) ? "" : "un", isr, next, 1889 tdb->tdb_next, (uint64_t)tsfth << 32 | tsftl)); 1890 #else 1891 __USE(next); 1892 __USE(tsfth); 1893 __USE(tsftl); 1894 #endif 1895 if ((RTW_READ8(&sc->sc_regs, RTW_TPPOLL) & RTW_TPPOLL_BQ) == 0) 1896 rtw_collect_txring(sc, tsb, tdb, 1); 1897 } 1898 /* Start beacon transmission. */ 1899 1900 if ((isr & RTW_INTR_BCNINT) != 0 && 1901 sc->sc_ic.ic_state == IEEE80211_S_RUN && 1902 SIMPLEQ_EMPTY(&tsb->tsb_dirtyq)) { 1903 RTW_DPRINTF(RTW_DEBUG_BEACON, 1904 ("%s: beacon prep. time, isr = %#04" PRIx16 1905 ", %16" PRIu64 "\n", __func__, isr, 1906 (uint64_t)tsfth << 32 | tsftl)); 1907 ic = &sc->sc_ic; 1908 m = rtw_beacon_alloc(sc, ic->ic_bss); 1909 1910 if (m == NULL) { 1911 aprint_error_dev(sc->sc_dev, 1912 "could not allocate beacon\n"); 1913 splx(s); 1914 return; 1915 } 1916 M_SETCTX(m, ieee80211_ref_node(ic->ic_bss)); 1917 IF_ENQUEUE(&sc->sc_beaconq, m); 1918 rtw_start(&sc->sc_if); /* in softint */ 1919 } 1920 1921 splx(s); 1922 } 1923 1924 static void 1925 rtw_intr_atim(struct rtw_softc *sc) 1926 { 1927 /* TBD */ 1928 return; 1929 } 1930 1931 #ifdef RTW_DEBUG 1932 static void 1933 rtw_dump_rings(struct rtw_softc *sc) 1934 { 1935 struct rtw_txdesc_blk *tdb; 1936 struct rtw_rxdesc *rd; 1937 struct rtw_rxdesc_blk *rdb; 1938 int desc, pri; 1939 1940 if ((rtw_debug & RTW_DEBUG_IO_KICK) == 0) 1941 return; 1942 1943 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1944 tdb = &sc->sc_txdesc_blk[pri]; 1945 printf("%s: txpri %d ndesc %d nfree %d\n", __func__, pri, 1946 tdb->tdb_ndesc, tdb->tdb_nfree); 1947 for (desc = 0; desc < tdb->tdb_ndesc; desc++) 1948 rtw_print_txdesc(sc, ".", NULL, tdb, desc); 1949 } 1950 1951 rdb = &sc->sc_rxdesc_blk; 1952 1953 for (desc = 0; desc < RTW_RXQLEN; desc++) { 1954 rd = &rdb->rdb_desc[desc]; 1955 printf("%s: %sctl %08x rsvd0/rssi %08x buf/tsftl %08x " 1956 "rsvd1/tsfth %08x\n", __func__, 1957 (desc >= rdb->rdb_ndesc) ? "UNUSED " : "", 1958 le32toh(rd->rd_ctl), le32toh(rd->rd_rssi), 1959 le32toh(rd->rd_buf), le32toh(rd->rd_tsfth)); 1960 } 1961 } 1962 #endif /* RTW_DEBUG */ 1963 1964 static void 1965 rtw_hwring_setup(struct rtw_softc *sc) 1966 { 1967 int pri; 1968 struct rtw_regs *regs = &sc->sc_regs; 1969 struct rtw_txdesc_blk *tdb; 1970 1971 sc->sc_txdesc_blk[RTW_TXPRILO].tdb_basereg = RTW_TLPDA; 1972 sc->sc_txdesc_blk[RTW_TXPRILO].tdb_base = RTW_RING_BASE(sc, hd_txlo); 1973 sc->sc_txdesc_blk[RTW_TXPRIMD].tdb_basereg = RTW_TNPDA; 1974 sc->sc_txdesc_blk[RTW_TXPRIMD].tdb_base = RTW_RING_BASE(sc, hd_txmd); 1975 sc->sc_txdesc_blk[RTW_TXPRIHI].tdb_basereg = RTW_THPDA; 1976 sc->sc_txdesc_blk[RTW_TXPRIHI].tdb_base = RTW_RING_BASE(sc, hd_txhi); 1977 sc->sc_txdesc_blk[RTW_TXPRIBCN].tdb_basereg = RTW_TBDA; 1978 sc->sc_txdesc_blk[RTW_TXPRIBCN].tdb_base = RTW_RING_BASE(sc, hd_bcn); 1979 1980 for (pri = 0; pri < RTW_NTXPRI; pri++) { 1981 tdb = &sc->sc_txdesc_blk[pri]; 1982 RTW_WRITE(regs, tdb->tdb_basereg, tdb->tdb_base); 1983 RTW_DPRINTF(RTW_DEBUG_XMIT_DESC, 1984 ("%s: reg[tdb->tdb_basereg] <- %" PRIxPTR "\n", __func__, 1985 (uintptr_t)tdb->tdb_base)); 1986 } 1987 1988 RTW_WRITE(regs, RTW_RDSAR, RTW_RING_BASE(sc, hd_rx)); 1989 1990 RTW_DPRINTF(RTW_DEBUG_RECV_DESC, 1991 ("%s: reg[RDSAR] <- %" PRIxPTR "\n", __func__, 1992 (uintptr_t)RTW_RING_BASE(sc, hd_rx))); 1993 1994 RTW_SYNC(regs, RTW_TLPDA, RTW_RDSAR); 1995 1996 } 1997 1998 static int 1999 rtw_swring_setup(struct rtw_softc *sc) 2000 { 2001 int rc; 2002 struct rtw_rxdesc_blk *rdb; 2003 2004 rtw_txdesc_blk_init_all(&sc->sc_txdesc_blk[0]); 2005 2006 rtw_txsoft_blk_init_all(&sc->sc_txsoft_blk[0]); 2007 2008 rdb = &sc->sc_rxdesc_blk; 2009 if ((rc = rtw_rxsoft_init_all(sc->sc_dmat, sc->sc_rxsoft, &rdb->rdb_ndesc, 2010 sc->sc_dev)) != 0 && rdb->rdb_ndesc == 0) { 2011 aprint_error_dev(sc->sc_dev, "could not allocate rx buffers\n"); 2012 return rc; 2013 } 2014 2015 rdb = &sc->sc_rxdesc_blk; 2016 rtw_rxdescs_sync(rdb, 0, rdb->rdb_ndesc, 2017 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 2018 rtw_rxdesc_init_all(rdb, sc->sc_rxsoft, 1); 2019 rdb->rdb_next = 0; 2020 2021 rtw_txdescs_sync_all(&sc->sc_txdesc_blk[0]); 2022 return 0; 2023 } 2024 2025 static void 2026 rtw_txdesc_blk_init(struct rtw_txdesc_blk *tdb) 2027 { 2028 int i; 2029 2030 (void)memset(tdb->tdb_desc, 0, 2031 sizeof(tdb->tdb_desc[0]) * tdb->tdb_ndesc); 2032 for (i = 0; i < tdb->tdb_ndesc; i++) 2033 tdb->tdb_desc[i].td_next = htole32(RTW_NEXT_DESC(tdb, i)); 2034 } 2035 2036 static u_int 2037 rtw_txring_next(struct rtw_regs *regs, struct rtw_txdesc_blk *tdb) 2038 { 2039 return (le32toh(RTW_READ(regs, tdb->tdb_basereg)) - tdb->tdb_base) / 2040 sizeof(struct rtw_txdesc); 2041 } 2042 2043 #ifdef RTW_DIAG 2044 static void 2045 rtw_txring_fixup(struct rtw_softc *sc, const char *fn, int ln) 2046 { 2047 int pri; 2048 u_int next; 2049 struct rtw_txdesc_blk *tdb; 2050 struct rtw_regs *regs = &sc->sc_regs; 2051 2052 for (pri = 0; pri < RTW_NTXPRI; pri++) { 2053 int i; 2054 tdb = &sc->sc_txdesc_blk[pri]; 2055 next = rtw_txring_next(regs, tdb); 2056 if (tdb->tdb_next == next) 2057 continue; 2058 for (i = 0; next != tdb->tdb_next; 2059 next = RTW_NEXT_IDX(tdb, next), i++) { 2060 if ((tdb->tdb_desc[next].td_stat & htole32(RTW_TXSTAT_OWN)) == 0) 2061 break; 2062 } 2063 printf("%s:%d: tx-ring %d expected next %u, read %u+%d -> %s\n", fn, 2064 ln, pri, tdb->tdb_next, next, i, tdb->tdb_next == next ? "okay" : "BAD"); 2065 if (tdb->tdb_next == next) 2066 continue; 2067 tdb->tdb_next = MIN(next, tdb->tdb_ndesc - 1); 2068 } 2069 } 2070 #endif 2071 2072 static void 2073 rtw_txdescs_reset(struct rtw_softc *sc) 2074 { 2075 int pri; 2076 struct rtw_txsoft_blk *tsb; 2077 struct rtw_txdesc_blk *tdb; 2078 2079 for (pri = 0; pri < RTW_NTXPRI; pri++) { 2080 tsb = &sc->sc_txsoft_blk[pri]; 2081 tdb = &sc->sc_txdesc_blk[pri]; 2082 rtw_collect_txring(sc, tsb, tdb, 1); 2083 #ifdef RTW_DIAG 2084 if (!SIMPLEQ_EMPTY(&tsb->tsb_dirtyq)) 2085 printf("%s: packets left in ring %d\n", __func__, pri); 2086 #endif 2087 } 2088 } 2089 2090 static void 2091 rtw_intr_ioerror(struct rtw_softc *sc, uint16_t isr) 2092 { 2093 int s; 2094 2095 aprint_error_dev(sc->sc_dev, "tx fifo underflow\n"); 2096 2097 RTW_DPRINTF(RTW_DEBUG_BUGS, ("%s: cleaning up xmit, isr %" PRIx16 2098 "\n", device_xname(sc->sc_dev), isr)); 2099 2100 s = splnet(); 2101 2102 #ifdef RTW_DEBUG 2103 rtw_dump_rings(sc); 2104 #endif /* RTW_DEBUG */ 2105 2106 /* Collect tx'd packets. XXX let's hope this stops the transmit 2107 * timeouts. 2108 */ 2109 rtw_txdescs_reset(sc); 2110 2111 #ifdef RTW_DEBUG 2112 rtw_dump_rings(sc); 2113 #endif /* RTW_DEBUG */ 2114 2115 splx(s); 2116 } 2117 2118 static inline void 2119 rtw_suspend_ticks(struct rtw_softc *sc) 2120 { 2121 RTW_DPRINTF(RTW_DEBUG_TIMEOUT, 2122 ("%s: suspending ticks\n", device_xname(sc->sc_dev))); 2123 sc->sc_do_tick = 0; 2124 } 2125 2126 static inline void 2127 rtw_resume_ticks(struct rtw_softc *sc) 2128 { 2129 uint32_t tsftrl0, tsftrl1, next_tint; 2130 2131 tsftrl0 = RTW_READ(&sc->sc_regs, RTW_TSFTRL); 2132 2133 tsftrl1 = RTW_READ(&sc->sc_regs, RTW_TSFTRL); 2134 next_tint = tsftrl1 + 1000000; 2135 RTW_WRITE(&sc->sc_regs, RTW_TINT, next_tint); 2136 2137 sc->sc_do_tick = 1; 2138 2139 #ifdef RTW_DEBUG 2140 RTW_DPRINTF(RTW_DEBUG_TIMEOUT, 2141 ("%s: resume ticks delta %#08x now %#08x next %#08x\n", 2142 device_xname(sc->sc_dev), tsftrl1 - tsftrl0, tsftrl1, next_tint)); 2143 #else 2144 __USE(tsftrl0); 2145 #endif 2146 } 2147 2148 static void 2149 rtw_intr_timeout(struct rtw_softc *sc) 2150 { 2151 int s; 2152 2153 s = splnet(); 2154 RTW_DPRINTF(RTW_DEBUG_TIMEOUT, ("%s: timeout\n", device_xname(sc->sc_dev))); 2155 if (sc->sc_do_tick) 2156 rtw_resume_ticks(sc); 2157 splx(s); 2158 } 2159 2160 int 2161 rtw_intr(void *arg) 2162 { 2163 struct rtw_softc *sc = arg; 2164 struct rtw_regs *regs = &sc->sc_regs; 2165 uint16_t isr; 2166 struct ifnet *ifp = &sc->sc_if; 2167 2168 /* 2169 * If the interface isn't running, the interrupt couldn't 2170 * possibly have come from us. 2171 */ 2172 if ((ifp->if_flags & IFF_RUNNING) == 0 || 2173 !device_activation(sc->sc_dev, DEVACT_LEVEL_DRIVER)) { 2174 RTW_DPRINTF(RTW_DEBUG_INTR, ("%s: stray interrupt\n", 2175 device_xname(sc->sc_dev))); 2176 return (0); 2177 } 2178 2179 isr = RTW_READ16(regs, RTW_ISR); 2180 if (isr == 0) 2181 return (0); 2182 2183 /* Disable interrupts. */ 2184 RTW_WRITE16(regs, RTW_IMR, 0); 2185 RTW_WBW(regs, RTW_IMR, RTW_IMR); 2186 2187 softint_schedule(sc->sc_soft_ih); 2188 return (1); 2189 } 2190 2191 static void 2192 rtw_softintr(void *arg) 2193 { 2194 int i; 2195 struct rtw_softc *sc = arg; 2196 struct rtw_regs *regs = &sc->sc_regs; 2197 uint16_t isr; 2198 struct ifnet *ifp = &sc->sc_if; 2199 2200 if ((ifp->if_flags & IFF_RUNNING) == 0 || 2201 !device_activation(sc->sc_dev, DEVACT_LEVEL_DRIVER)) { 2202 RTW_DPRINTF(RTW_DEBUG_INTR, ("%s: stray interrupt\n", 2203 device_xname(sc->sc_dev))); 2204 return; 2205 } 2206 2207 for (i = 0; i < 10; i++) { 2208 isr = RTW_READ16(regs, RTW_ISR); 2209 2210 RTW_WRITE16(regs, RTW_ISR, isr); 2211 RTW_WBR(regs, RTW_ISR, RTW_ISR); 2212 2213 if (sc->sc_intr_ack != NULL) 2214 (*sc->sc_intr_ack)(regs); 2215 2216 if (isr == 0) 2217 break; 2218 2219 #ifdef RTW_DEBUG 2220 #define PRINTINTR(flag) do { \ 2221 if ((isr & flag) != 0) { \ 2222 printf("%s" #flag, delim); \ 2223 delim = ","; \ 2224 } \ 2225 } while (0) 2226 2227 if ((rtw_debug & RTW_DEBUG_INTR) != 0 && isr != 0) { 2228 const char *delim = "<"; 2229 2230 printf("%s: reg[ISR] = %x", device_xname(sc->sc_dev), 2231 isr); 2232 2233 PRINTINTR(RTW_INTR_TXFOVW); 2234 PRINTINTR(RTW_INTR_TIMEOUT); 2235 PRINTINTR(RTW_INTR_BCNINT); 2236 PRINTINTR(RTW_INTR_ATIMINT); 2237 PRINTINTR(RTW_INTR_TBDER); 2238 PRINTINTR(RTW_INTR_TBDOK); 2239 PRINTINTR(RTW_INTR_THPDER); 2240 PRINTINTR(RTW_INTR_THPDOK); 2241 PRINTINTR(RTW_INTR_TNPDER); 2242 PRINTINTR(RTW_INTR_TNPDOK); 2243 PRINTINTR(RTW_INTR_RXFOVW); 2244 PRINTINTR(RTW_INTR_RDU); 2245 PRINTINTR(RTW_INTR_TLPDER); 2246 PRINTINTR(RTW_INTR_TLPDOK); 2247 PRINTINTR(RTW_INTR_RER); 2248 PRINTINTR(RTW_INTR_ROK); 2249 2250 printf(">\n"); 2251 } 2252 #undef PRINTINTR 2253 #endif /* RTW_DEBUG */ 2254 2255 if ((isr & RTW_INTR_RX) != 0) 2256 rtw_intr_rx(sc, isr); 2257 if ((isr & RTW_INTR_TX) != 0) 2258 rtw_intr_tx(sc, isr); 2259 if ((isr & RTW_INTR_BEACON) != 0) 2260 rtw_intr_beacon(sc, isr); 2261 if ((isr & RTW_INTR_ATIMINT) != 0) 2262 rtw_intr_atim(sc); 2263 if ((isr & RTW_INTR_IOERROR) != 0) 2264 rtw_intr_ioerror(sc, isr); 2265 if ((isr & RTW_INTR_TIMEOUT) != 0) 2266 rtw_intr_timeout(sc); 2267 } 2268 if (i == 10) 2269 softint_schedule(sc->sc_soft_ih); 2270 2271 /* Re-enable interrupts */ 2272 RTW_WRITE16(regs, RTW_IMR, sc->sc_inten); 2273 RTW_WBW(regs, RTW_IMR, RTW_IMR); 2274 } 2275 2276 /* Must be called at splnet. */ 2277 static void 2278 rtw_stop(struct ifnet *ifp, int disable) 2279 { 2280 int pri; 2281 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 2282 struct ieee80211com *ic = &sc->sc_ic; 2283 struct rtw_regs *regs = &sc->sc_regs; 2284 2285 rtw_suspend_ticks(sc); 2286 2287 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2288 2289 if (device_has_power(sc->sc_dev)) { 2290 /* Disable interrupts. */ 2291 RTW_WRITE16(regs, RTW_IMR, 0); 2292 2293 RTW_WBW(regs, RTW_TPPOLL, RTW_IMR); 2294 2295 /* Stop the transmit and receive processes. First stop DMA, 2296 * then disable receiver and transmitter. 2297 */ 2298 RTW_WRITE8(regs, RTW_TPPOLL, RTW_TPPOLL_SALL); 2299 2300 RTW_SYNC(regs, RTW_TPPOLL, RTW_IMR); 2301 2302 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 2303 } 2304 2305 for (pri = 0; pri < RTW_NTXPRI; pri++) { 2306 rtw_txsofts_release(sc->sc_dmat, &sc->sc_ic, 2307 &sc->sc_txsoft_blk[pri]); 2308 } 2309 2310 rtw_rxbufs_release(sc->sc_dmat, &sc->sc_rxsoft[0]); 2311 2312 /* Mark the interface as not running. Cancel the watchdog timer. */ 2313 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2314 ifp->if_timer = 0; 2315 2316 if (disable) 2317 pmf_device_suspend(sc->sc_dev, &sc->sc_qual); 2318 2319 return; 2320 } 2321 2322 const char * 2323 rtw_pwrstate_string(enum rtw_pwrstate power) 2324 { 2325 switch (power) { 2326 case RTW_ON: 2327 return "on"; 2328 case RTW_SLEEP: 2329 return "sleep"; 2330 case RTW_OFF: 2331 return "off"; 2332 default: 2333 return "unknown"; 2334 } 2335 } 2336 2337 /* XXX For Maxim, I am using the RFMD settings gleaned from the 2338 * reference driver, plus a magic Maxim "ON" value that comes from 2339 * the Realtek document "Windows PG for Rtl8180." 2340 */ 2341 static void 2342 rtw_maxim_pwrstate(struct rtw_regs *regs, enum rtw_pwrstate power, 2343 int before_rf, int digphy) 2344 { 2345 uint32_t anaparm; 2346 2347 anaparm = RTW_READ(regs, RTW_ANAPARM); 2348 anaparm &= ~(RTW_ANAPARM_RFPOW_MASK | RTW_ANAPARM_TXDACOFF); 2349 2350 switch (power) { 2351 case RTW_OFF: 2352 if (before_rf) 2353 return; 2354 anaparm |= RTW_ANAPARM_RFPOW_MAXIM_OFF; 2355 anaparm |= RTW_ANAPARM_TXDACOFF; 2356 break; 2357 case RTW_SLEEP: 2358 if (!before_rf) 2359 return; 2360 anaparm |= RTW_ANAPARM_RFPOW_MAXIM_SLEEP; 2361 anaparm |= RTW_ANAPARM_TXDACOFF; 2362 break; 2363 case RTW_ON: 2364 if (!before_rf) 2365 return; 2366 anaparm |= RTW_ANAPARM_RFPOW_MAXIM_ON; 2367 break; 2368 } 2369 RTW_DPRINTF(RTW_DEBUG_PWR, 2370 ("%s: power state %s, %s RF, reg[ANAPARM] <- %08x\n", 2371 __func__, rtw_pwrstate_string(power), 2372 (before_rf) ? "before" : "after", anaparm)); 2373 2374 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 2375 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 2376 } 2377 2378 /* XXX I am using the RFMD settings gleaned from the reference 2379 * driver. They agree 2380 */ 2381 static void 2382 rtw_rfmd_pwrstate(struct rtw_regs *regs, enum rtw_pwrstate power, 2383 int before_rf, int digphy) 2384 { 2385 uint32_t anaparm; 2386 2387 anaparm = RTW_READ(regs, RTW_ANAPARM); 2388 anaparm &= ~(RTW_ANAPARM_RFPOW_MASK | RTW_ANAPARM_TXDACOFF); 2389 2390 switch (power) { 2391 case RTW_OFF: 2392 if (before_rf) 2393 return; 2394 anaparm |= RTW_ANAPARM_RFPOW_RFMD_OFF; 2395 anaparm |= RTW_ANAPARM_TXDACOFF; 2396 break; 2397 case RTW_SLEEP: 2398 if (!before_rf) 2399 return; 2400 anaparm |= RTW_ANAPARM_RFPOW_RFMD_SLEEP; 2401 anaparm |= RTW_ANAPARM_TXDACOFF; 2402 break; 2403 case RTW_ON: 2404 if (!before_rf) 2405 return; 2406 anaparm |= RTW_ANAPARM_RFPOW_RFMD_ON; 2407 break; 2408 } 2409 RTW_DPRINTF(RTW_DEBUG_PWR, 2410 ("%s: power state %s, %s RF, reg[ANAPARM] <- %08x\n", 2411 __func__, rtw_pwrstate_string(power), 2412 (before_rf) ? "before" : "after", anaparm)); 2413 2414 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 2415 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 2416 } 2417 2418 static void 2419 rtw_philips_pwrstate(struct rtw_regs *regs, enum rtw_pwrstate power, 2420 int before_rf, int digphy) 2421 { 2422 uint32_t anaparm; 2423 2424 anaparm = RTW_READ(regs, RTW_ANAPARM); 2425 anaparm &= ~(RTW_ANAPARM_RFPOW_MASK | RTW_ANAPARM_TXDACOFF); 2426 2427 switch (power) { 2428 case RTW_OFF: 2429 if (before_rf) 2430 return; 2431 anaparm |= RTW_ANAPARM_RFPOW_PHILIPS_OFF; 2432 anaparm |= RTW_ANAPARM_TXDACOFF; 2433 break; 2434 case RTW_SLEEP: 2435 if (!before_rf) 2436 return; 2437 anaparm |= RTW_ANAPARM_RFPOW_PHILIPS_SLEEP; 2438 anaparm |= RTW_ANAPARM_TXDACOFF; 2439 break; 2440 case RTW_ON: 2441 if (!before_rf) 2442 return; 2443 if (digphy) { 2444 anaparm |= RTW_ANAPARM_RFPOW_DIG_PHILIPS_ON; 2445 /* XXX guess */ 2446 anaparm |= RTW_ANAPARM_TXDACOFF; 2447 } else 2448 anaparm |= RTW_ANAPARM_RFPOW_ANA_PHILIPS_ON; 2449 break; 2450 } 2451 RTW_DPRINTF(RTW_DEBUG_PWR, 2452 ("%s: power state %s, %s RF, reg[ANAPARM] <- %08x\n", 2453 __func__, rtw_pwrstate_string(power), 2454 (before_rf) ? "before" : "after", anaparm)); 2455 2456 RTW_WRITE(regs, RTW_ANAPARM, anaparm); 2457 RTW_SYNC(regs, RTW_ANAPARM, RTW_ANAPARM); 2458 } 2459 2460 static void 2461 rtw_pwrstate0(struct rtw_softc *sc, enum rtw_pwrstate power, int before_rf, 2462 int digphy) 2463 { 2464 struct rtw_regs *regs = &sc->sc_regs; 2465 2466 rtw_set_access(regs, RTW_ACCESS_ANAPARM); 2467 2468 (*sc->sc_pwrstate_cb)(regs, power, before_rf, digphy); 2469 2470 rtw_set_access(regs, RTW_ACCESS_NONE); 2471 2472 return; 2473 } 2474 2475 static int 2476 rtw_pwrstate(struct rtw_softc *sc, enum rtw_pwrstate power) 2477 { 2478 int rc; 2479 2480 RTW_DPRINTF(RTW_DEBUG_PWR, 2481 ("%s: %s->%s\n", __func__, 2482 rtw_pwrstate_string(sc->sc_pwrstate), rtw_pwrstate_string(power))); 2483 2484 if (sc->sc_pwrstate == power) 2485 return 0; 2486 2487 rtw_pwrstate0(sc, power, 1, sc->sc_flags & RTW_F_DIGPHY); 2488 rc = rtw_rf_pwrstate(sc->sc_rf, power); 2489 rtw_pwrstate0(sc, power, 0, sc->sc_flags & RTW_F_DIGPHY); 2490 2491 switch (power) { 2492 case RTW_ON: 2493 /* TBD set LEDs */ 2494 break; 2495 case RTW_SLEEP: 2496 /* TBD */ 2497 break; 2498 case RTW_OFF: 2499 /* TBD */ 2500 break; 2501 } 2502 if (rc == 0) 2503 sc->sc_pwrstate = power; 2504 else 2505 sc->sc_pwrstate = RTW_OFF; 2506 return rc; 2507 } 2508 2509 static int 2510 rtw_tune(struct rtw_softc *sc) 2511 { 2512 struct ieee80211com *ic = &sc->sc_ic; 2513 struct rtw_tx_radiotap_header *rt = &sc->sc_txtap; 2514 struct rtw_rx_radiotap_header *rr = &sc->sc_rxtap; 2515 u_int chan; 2516 int rc; 2517 int antdiv = sc->sc_flags & RTW_F_ANTDIV, 2518 dflantb = sc->sc_flags & RTW_F_DFLANTB; 2519 2520 chan = ieee80211_chan2ieee(ic, ic->ic_curchan); 2521 KASSERT(chan != IEEE80211_CHAN_ANY); 2522 2523 rt->rt_chan_freq = htole16(ic->ic_curchan->ic_freq); 2524 rt->rt_chan_flags = htole16(ic->ic_curchan->ic_flags); 2525 2526 rr->rr_chan_freq = htole16(ic->ic_curchan->ic_freq); 2527 rr->rr_chan_flags = htole16(ic->ic_curchan->ic_flags); 2528 2529 if (chan == sc->sc_cur_chan) { 2530 RTW_DPRINTF(RTW_DEBUG_TUNE, 2531 ("%s: already tuned chan #%d\n", __func__, chan)); 2532 return 0; 2533 } 2534 2535 rtw_suspend_ticks(sc); 2536 2537 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 2538 2539 /* TBD wait for Tx to complete */ 2540 2541 KASSERT(device_has_power(sc->sc_dev)); 2542 2543 if ((rc = rtw_phy_init(&sc->sc_regs, sc->sc_rf, 2544 rtw_chan2txpower(&sc->sc_srom, ic, ic->ic_curchan), sc->sc_csthr, 2545 ic->ic_curchan->ic_freq, antdiv, dflantb, RTW_ON)) != 0) { 2546 /* XXX condition on powersaving */ 2547 aprint_error_dev(sc->sc_dev, "phy init failed\n"); 2548 } 2549 2550 sc->sc_cur_chan = chan; 2551 2552 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 2553 2554 rtw_resume_ticks(sc); 2555 2556 return rc; 2557 } 2558 2559 bool 2560 rtw_suspend(device_t self, const pmf_qual_t *qual) 2561 { 2562 int rc; 2563 struct rtw_softc *sc = device_private(self); 2564 2565 sc->sc_flags &= ~RTW_F_DK_VALID; 2566 2567 if (!device_has_power(self)) 2568 return false; 2569 2570 /* turn off PHY */ 2571 if ((rc = rtw_pwrstate(sc, RTW_OFF)) != 0) { 2572 aprint_error_dev(self, "failed to turn off PHY (%d)\n", rc); 2573 return false; 2574 } 2575 2576 rtw_disable_interrupts(&sc->sc_regs); 2577 2578 return true; 2579 } 2580 2581 bool 2582 rtw_resume(device_t self, const pmf_qual_t *qual) 2583 { 2584 struct rtw_softc *sc = device_private(self); 2585 2586 /* Power may have been removed, resetting WEP keys. 2587 */ 2588 sc->sc_flags &= ~RTW_F_DK_VALID; 2589 rtw_enable_interrupts(sc); 2590 2591 return true; 2592 } 2593 2594 static void 2595 rtw_transmit_config(struct rtw_regs *regs) 2596 { 2597 uint32_t tcr; 2598 2599 tcr = RTW_READ(regs, RTW_TCR); 2600 2601 tcr |= RTW_TCR_CWMIN; 2602 tcr &= ~RTW_TCR_MXDMA_MASK; 2603 tcr |= RTW_TCR_MXDMA_256; 2604 tcr |= RTW_TCR_SAT; /* send ACK as fast as possible */ 2605 tcr &= ~RTW_TCR_LBK_MASK; 2606 tcr |= RTW_TCR_LBK_NORMAL; /* normal operating mode */ 2607 2608 /* set short/long retry limits */ 2609 tcr &= ~(RTW_TCR_SRL_MASK | RTW_TCR_LRL_MASK); 2610 tcr |= __SHIFTIN(4, RTW_TCR_SRL_MASK) | __SHIFTIN(4, RTW_TCR_LRL_MASK); 2611 2612 tcr &= ~RTW_TCR_CRC; /* NIC appends CRC32 */ 2613 2614 RTW_WRITE(regs, RTW_TCR, tcr); 2615 RTW_SYNC(regs, RTW_TCR, RTW_TCR); 2616 } 2617 2618 static void 2619 rtw_disable_interrupts(struct rtw_regs *regs) 2620 { 2621 RTW_WRITE16(regs, RTW_IMR, 0); 2622 RTW_WBW(regs, RTW_IMR, RTW_ISR); 2623 RTW_WRITE16(regs, RTW_ISR, 0xffff); 2624 RTW_SYNC(regs, RTW_IMR, RTW_ISR); 2625 } 2626 2627 static void 2628 rtw_enable_interrupts(struct rtw_softc *sc) 2629 { 2630 struct rtw_regs *regs = &sc->sc_regs; 2631 2632 sc->sc_inten = RTW_INTR_RX | RTW_INTR_TX | RTW_INTR_BEACON 2633 | RTW_INTR_ATIMINT; 2634 sc->sc_inten |= RTW_INTR_IOERROR | RTW_INTR_TIMEOUT; 2635 2636 RTW_WRITE16(regs, RTW_IMR, sc->sc_inten); 2637 RTW_WBW(regs, RTW_IMR, RTW_ISR); 2638 RTW_WRITE16(regs, RTW_ISR, 0xffff); 2639 RTW_SYNC(regs, RTW_IMR, RTW_ISR); 2640 2641 /* XXX necessary? */ 2642 if (sc->sc_intr_ack != NULL) 2643 (*sc->sc_intr_ack)(regs); 2644 } 2645 2646 static void 2647 rtw_set_nettype(struct rtw_softc *sc, enum ieee80211_opmode opmode) 2648 { 2649 uint8_t msr; 2650 2651 /* I'm guessing that MSR is protected as CONFIG[0123] are. */ 2652 rtw_set_access(&sc->sc_regs, RTW_ACCESS_CONFIG); 2653 2654 msr = RTW_READ8(&sc->sc_regs, RTW_MSR) & ~RTW_MSR_NETYPE_MASK; 2655 2656 switch (opmode) { 2657 case IEEE80211_M_AHDEMO: 2658 case IEEE80211_M_IBSS: 2659 msr |= RTW_MSR_NETYPE_ADHOC_OK; 2660 break; 2661 case IEEE80211_M_HOSTAP: 2662 msr |= RTW_MSR_NETYPE_AP_OK; 2663 break; 2664 case IEEE80211_M_MONITOR: 2665 /* XXX */ 2666 msr |= RTW_MSR_NETYPE_NOLINK; 2667 break; 2668 case IEEE80211_M_STA: 2669 msr |= RTW_MSR_NETYPE_INFRA_OK; 2670 break; 2671 } 2672 RTW_WRITE8(&sc->sc_regs, RTW_MSR, msr); 2673 2674 rtw_set_access(&sc->sc_regs, RTW_ACCESS_NONE); 2675 } 2676 2677 #define rtw_calchash(addr) \ 2678 (ether_crc32_be((addr), IEEE80211_ADDR_LEN) >> 26) 2679 2680 static void 2681 rtw_pktfilt_load(struct rtw_softc *sc) 2682 { 2683 struct rtw_regs *regs = &sc->sc_regs; 2684 struct ieee80211com *ic = &sc->sc_ic; 2685 struct ethercom *ec = &sc->sc_ec; 2686 struct ifnet *ifp = &sc->sc_if; 2687 int hash; 2688 uint32_t hashes[2] = { 0, 0 }; 2689 struct ether_multi *enm; 2690 struct ether_multistep step; 2691 2692 /* XXX might be necessary to stop Rx/Tx engines while setting filters */ 2693 2694 sc->sc_rcr &= ~RTW_RCR_PKTFILTER_MASK; 2695 sc->sc_rcr &= ~(RTW_RCR_MXDMA_MASK | RTW_RCR_RXFTH_MASK); 2696 2697 sc->sc_rcr |= RTW_RCR_PKTFILTER_DEFAULT; 2698 /* MAC auto-reset PHY (huh?) */ 2699 sc->sc_rcr |= RTW_RCR_ENMARP; 2700 /* DMA whole Rx packets, only. Set Tx DMA burst size to 1024 bytes. */ 2701 sc->sc_rcr |= RTW_RCR_MXDMA_1024 | RTW_RCR_RXFTH_WHOLE; 2702 2703 switch (ic->ic_opmode) { 2704 case IEEE80211_M_MONITOR: 2705 sc->sc_rcr |= RTW_RCR_MONITOR; 2706 break; 2707 case IEEE80211_M_AHDEMO: 2708 case IEEE80211_M_IBSS: 2709 /* receive broadcasts in our BSS */ 2710 sc->sc_rcr |= RTW_RCR_ADD3; 2711 break; 2712 default: 2713 break; 2714 } 2715 2716 ifp->if_flags &= ~IFF_ALLMULTI; 2717 2718 /* 2719 * Program the 64-bit multicast hash filter. 2720 */ 2721 ETHER_LOCK(ec); 2722 ETHER_FIRST_MULTI(step, ec, enm); 2723 while (enm != NULL) { 2724 /* XXX */ 2725 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 2726 ETHER_ADDR_LEN) != 0) { 2727 ifp->if_flags |= IFF_ALLMULTI; 2728 break; 2729 } 2730 2731 hash = rtw_calchash(enm->enm_addrlo); 2732 hashes[hash >> 5] |= (1 << (hash & 0x1f)); 2733 ETHER_NEXT_MULTI(step, enm); 2734 } 2735 ETHER_UNLOCK(ec); 2736 2737 /* XXX accept all broadcast if scanning */ 2738 if ((ifp->if_flags & IFF_BROADCAST) != 0) 2739 sc->sc_rcr |= RTW_RCR_AB; /* accept all broadcast */ 2740 2741 if (ifp->if_flags & IFF_PROMISC) { 2742 sc->sc_rcr |= RTW_RCR_AB; /* accept all broadcast */ 2743 sc->sc_rcr |= RTW_RCR_ACRC32; /* accept frames failing CRC */ 2744 sc->sc_rcr |= RTW_RCR_AICV; /* accept frames failing ICV */ 2745 ifp->if_flags |= IFF_ALLMULTI; 2746 } 2747 2748 if (ifp->if_flags & IFF_ALLMULTI) 2749 hashes[0] = hashes[1] = 0xffffffff; 2750 2751 if ((hashes[0] | hashes[1]) != 0) 2752 sc->sc_rcr |= RTW_RCR_AM; /* accept multicast */ 2753 2754 RTW_WRITE(regs, RTW_MAR0, hashes[0]); 2755 RTW_WRITE(regs, RTW_MAR1, hashes[1]); 2756 RTW_WRITE(regs, RTW_RCR, sc->sc_rcr); 2757 RTW_SYNC(regs, RTW_MAR0, RTW_RCR); /* RTW_MAR0 < RTW_MAR1 < RTW_RCR */ 2758 2759 DPRINTF(sc, RTW_DEBUG_PKTFILT, 2760 ("%s: RTW_MAR0 %08x RTW_MAR1 %08x RTW_RCR %08x\n", 2761 device_xname(sc->sc_dev), RTW_READ(regs, RTW_MAR0), 2762 RTW_READ(regs, RTW_MAR1), RTW_READ(regs, RTW_RCR))); 2763 } 2764 2765 static struct mbuf * 2766 rtw_beacon_alloc(struct rtw_softc *sc, struct ieee80211_node *ni) 2767 { 2768 struct ieee80211com *ic = &sc->sc_ic; 2769 struct mbuf *m; 2770 struct ieee80211_beacon_offsets boff; 2771 2772 if ((m = ieee80211_beacon_alloc(ic, ni, &boff)) != NULL) { 2773 RTW_DPRINTF(RTW_DEBUG_BEACON, 2774 ("%s: m %p len %u\n", __func__, m, m->m_len)); 2775 } 2776 return m; 2777 } 2778 2779 /* Must be called at splnet. */ 2780 static int 2781 rtw_init(struct ifnet *ifp) 2782 { 2783 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 2784 struct ieee80211com *ic = &sc->sc_ic; 2785 struct rtw_regs *regs = &sc->sc_regs; 2786 int rc; 2787 2788 if (device_is_active(sc->sc_dev)) { 2789 /* Cancel pending I/O and reset. */ 2790 rtw_stop(ifp, 0); 2791 } else if (!pmf_device_resume(sc->sc_dev, &sc->sc_qual) || 2792 !device_is_active(sc->sc_dev)) 2793 return 0; 2794 2795 DPRINTF(sc, RTW_DEBUG_TUNE, ("%s: channel %d freq %d flags 0x%04x\n", 2796 __func__, ieee80211_chan2ieee(ic, ic->ic_curchan), 2797 ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags)); 2798 2799 if ((rc = rtw_pwrstate(sc, RTW_OFF)) != 0) 2800 goto out; 2801 2802 if ((rc = rtw_swring_setup(sc)) != 0) 2803 goto out; 2804 2805 rtw_transmit_config(regs); 2806 2807 rtw_set_access(regs, RTW_ACCESS_CONFIG); 2808 2809 RTW_WRITE8(regs, RTW_MSR, 0x0); /* no link */ 2810 RTW_WBW(regs, RTW_MSR, RTW_BRSR); 2811 2812 /* long PLCP header, 1Mb/2Mb basic rate */ 2813 RTW_WRITE16(regs, RTW_BRSR, RTW_BRSR_MBR8180_2MBPS); 2814 RTW_SYNC(regs, RTW_BRSR, RTW_BRSR); 2815 2816 rtw_set_access(regs, RTW_ACCESS_ANAPARM); 2817 rtw_set_access(regs, RTW_ACCESS_NONE); 2818 2819 /* XXX from reference sources */ 2820 RTW_WRITE(regs, RTW_FEMR, 0xffff); 2821 RTW_SYNC(regs, RTW_FEMR, RTW_FEMR); 2822 2823 rtw_set_rfprog(regs, sc->sc_rfchipid, sc->sc_dev); 2824 2825 RTW_WRITE8(regs, RTW_PHYDELAY, sc->sc_phydelay); 2826 /* from Linux driver */ 2827 RTW_WRITE8(regs, RTW_CRCOUNT, RTW_CRCOUNT_MAGIC); 2828 2829 RTW_SYNC(regs, RTW_PHYDELAY, RTW_CRCOUNT); 2830 2831 rtw_enable_interrupts(sc); 2832 2833 rtw_pktfilt_load(sc); 2834 2835 rtw_hwring_setup(sc); 2836 2837 rtw_wep_setkeys(sc, ic->ic_nw_keys, ic->ic_def_txkey); 2838 2839 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 2840 2841 ifp->if_flags |= IFF_RUNNING; 2842 ic->ic_state = IEEE80211_S_INIT; 2843 2844 RTW_WRITE16(regs, RTW_BSSID16, 0x0); 2845 RTW_WRITE(regs, RTW_BSSID32, 0x0); 2846 2847 rtw_resume_ticks(sc); 2848 2849 rtw_set_nettype(sc, IEEE80211_M_MONITOR); 2850 2851 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2852 return ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2853 else 2854 return ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2855 2856 out: 2857 aprint_error_dev(sc->sc_dev, "interface not running\n"); 2858 return rc; 2859 } 2860 2861 static inline void 2862 rtw_led_init(struct rtw_regs *regs) 2863 { 2864 uint8_t cfg0, cfg1; 2865 2866 rtw_set_access(regs, RTW_ACCESS_CONFIG); 2867 2868 cfg0 = RTW_READ8(regs, RTW_CONFIG0); 2869 cfg0 |= RTW_CONFIG0_LEDGPOEN; 2870 RTW_WRITE8(regs, RTW_CONFIG0, cfg0); 2871 2872 cfg1 = RTW_READ8(regs, RTW_CONFIG1); 2873 RTW_DPRINTF(RTW_DEBUG_LED, 2874 ("%s: read %" PRIx8 " from reg[CONFIG1]\n", __func__, cfg1)); 2875 2876 cfg1 &= ~RTW_CONFIG1_LEDS_MASK; 2877 cfg1 |= RTW_CONFIG1_LEDS_TX_RX; 2878 RTW_WRITE8(regs, RTW_CONFIG1, cfg1); 2879 2880 rtw_set_access(regs, RTW_ACCESS_NONE); 2881 } 2882 2883 /* 2884 * IEEE80211_S_INIT: LED1 off 2885 * 2886 * IEEE80211_S_AUTH, 2887 * IEEE80211_S_ASSOC, 2888 * IEEE80211_S_SCAN: LED1 blinks @ 1 Hz, blinks at 5Hz for tx/rx 2889 * 2890 * IEEE80211_S_RUN: LED1 on, blinks @ 5Hz for tx/rx 2891 */ 2892 static void 2893 rtw_led_newstate(struct rtw_softc *sc, enum ieee80211_state nstate) 2894 { 2895 struct rtw_led_state *ls; 2896 2897 ls = &sc->sc_led_state; 2898 2899 switch (nstate) { 2900 case IEEE80211_S_INIT: 2901 rtw_led_init(&sc->sc_regs); 2902 aprint_debug_dev(sc->sc_dev, "stopping blink\n"); 2903 callout_stop(&ls->ls_slow_ch); 2904 callout_stop(&ls->ls_fast_ch); 2905 ls->ls_slowblink = 0; 2906 ls->ls_actblink = 0; 2907 ls->ls_default = 0; 2908 break; 2909 case IEEE80211_S_SCAN: 2910 aprint_debug_dev(sc->sc_dev, "scheduling blink\n"); 2911 callout_schedule(&ls->ls_slow_ch, RTW_LED_SLOW_TICKS); 2912 callout_schedule(&ls->ls_fast_ch, RTW_LED_FAST_TICKS); 2913 /*FALLTHROUGH*/ 2914 case IEEE80211_S_AUTH: 2915 case IEEE80211_S_ASSOC: 2916 ls->ls_default = RTW_LED1; 2917 ls->ls_actblink = RTW_LED1; 2918 ls->ls_slowblink = RTW_LED1; 2919 break; 2920 case IEEE80211_S_RUN: 2921 ls->ls_slowblink = 0; 2922 break; 2923 } 2924 rtw_led_set(ls, &sc->sc_regs, sc->sc_hwverid); 2925 } 2926 2927 static void 2928 rtw_led_set(struct rtw_led_state *ls, struct rtw_regs *regs, int hwverid) 2929 { 2930 uint8_t led_condition; 2931 bus_size_t ofs; 2932 uint8_t mask, newval, val; 2933 2934 led_condition = ls->ls_default; 2935 2936 if (ls->ls_state & RTW_LED_S_SLOW) 2937 led_condition ^= ls->ls_slowblink; 2938 if (ls->ls_state & (RTW_LED_S_RX | RTW_LED_S_TX)) 2939 led_condition ^= ls->ls_actblink; 2940 2941 RTW_DPRINTF(RTW_DEBUG_LED, 2942 ("%s: LED condition %" PRIx8 "\n", __func__, led_condition)); 2943 2944 switch (hwverid) { 2945 default: 2946 case 'F': 2947 ofs = RTW_PSR; 2948 newval = mask = RTW_PSR_LEDGPO0 | RTW_PSR_LEDGPO1; 2949 if (led_condition & RTW_LED0) 2950 newval &= ~RTW_PSR_LEDGPO0; 2951 if (led_condition & RTW_LED1) 2952 newval &= ~RTW_PSR_LEDGPO1; 2953 break; 2954 case 'D': 2955 ofs = RTW_9346CR; 2956 mask = RTW_9346CR_EEM_MASK | RTW_9346CR_EEDI | RTW_9346CR_EECS; 2957 newval = RTW_9346CR_EEM_PROGRAM; 2958 if (led_condition & RTW_LED0) 2959 newval |= RTW_9346CR_EEDI; 2960 if (led_condition & RTW_LED1) 2961 newval |= RTW_9346CR_EECS; 2962 break; 2963 } 2964 val = RTW_READ8(regs, ofs); 2965 RTW_DPRINTF(RTW_DEBUG_LED, 2966 ("%s: read %" PRIx8 " from reg[%#02" PRIxPTR "]\n", __func__, val, 2967 (uintptr_t)ofs)); 2968 val &= ~mask; 2969 val |= newval; 2970 RTW_WRITE8(regs, ofs, val); 2971 RTW_DPRINTF(RTW_DEBUG_LED, 2972 ("%s: wrote %" PRIx8 " to reg[%#02" PRIxPTR "]\n", __func__, val, 2973 (uintptr_t)ofs)); 2974 RTW_SYNC(regs, ofs, ofs); 2975 } 2976 2977 static void 2978 rtw_led_fastblink(void *arg) 2979 { 2980 int ostate, s; 2981 struct rtw_softc *sc = (struct rtw_softc *)arg; 2982 struct rtw_led_state *ls = &sc->sc_led_state; 2983 2984 s = splnet(); 2985 ostate = ls->ls_state; 2986 ls->ls_state ^= ls->ls_event; 2987 2988 if ((ls->ls_event & RTW_LED_S_TX) == 0) 2989 ls->ls_state &= ~RTW_LED_S_TX; 2990 2991 if ((ls->ls_event & RTW_LED_S_RX) == 0) 2992 ls->ls_state &= ~RTW_LED_S_RX; 2993 2994 ls->ls_event = 0; 2995 2996 if (ostate != ls->ls_state) 2997 rtw_led_set(ls, &sc->sc_regs, sc->sc_hwverid); 2998 splx(s); 2999 3000 aprint_debug_dev(sc->sc_dev, "scheduling fast blink\n"); 3001 callout_schedule(&ls->ls_fast_ch, RTW_LED_FAST_TICKS); 3002 } 3003 3004 static void 3005 rtw_led_slowblink(void *arg) 3006 { 3007 int s; 3008 struct rtw_softc *sc = (struct rtw_softc *)arg; 3009 struct rtw_led_state *ls = &sc->sc_led_state; 3010 3011 s = splnet(); 3012 ls->ls_state ^= RTW_LED_S_SLOW; 3013 rtw_led_set(ls, &sc->sc_regs, sc->sc_hwverid); 3014 splx(s); 3015 aprint_debug_dev(sc->sc_dev, "scheduling slow blink\n"); 3016 callout_schedule(&ls->ls_slow_ch, RTW_LED_SLOW_TICKS); 3017 } 3018 3019 static void 3020 rtw_led_detach(struct rtw_led_state *ls) 3021 { 3022 callout_destroy(&ls->ls_fast_ch); 3023 callout_destroy(&ls->ls_slow_ch); 3024 } 3025 3026 static void 3027 rtw_led_attach(struct rtw_led_state *ls, void *arg) 3028 { 3029 callout_init(&ls->ls_fast_ch, 0); 3030 callout_init(&ls->ls_slow_ch, 0); 3031 callout_setfunc(&ls->ls_fast_ch, rtw_led_fastblink, arg); 3032 callout_setfunc(&ls->ls_slow_ch, rtw_led_slowblink, arg); 3033 } 3034 3035 static int 3036 rtw_ioctl(struct ifnet *ifp, u_long cmd, void *data) 3037 { 3038 int rc = 0, s; 3039 struct rtw_softc *sc = ifp->if_softc; 3040 3041 s = splnet(); 3042 if (cmd == SIOCSIFFLAGS) { 3043 if ((rc = ifioctl_common(ifp, cmd, data)) != 0) 3044 ; 3045 else switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { 3046 case IFF_UP: 3047 rc = rtw_init(ifp); 3048 RTW_PRINT_REGS(&sc->sc_regs, ifp->if_xname, __func__); 3049 break; 3050 case IFF_UP | IFF_RUNNING: 3051 if (device_activation(sc->sc_dev, DEVACT_LEVEL_DRIVER)) 3052 rtw_pktfilt_load(sc); 3053 RTW_PRINT_REGS(&sc->sc_regs, ifp->if_xname, __func__); 3054 break; 3055 case IFF_RUNNING: 3056 RTW_PRINT_REGS(&sc->sc_regs, ifp->if_xname, __func__); 3057 rtw_stop(ifp, 1); 3058 break; 3059 default: 3060 break; 3061 } 3062 } else if ((rc = ieee80211_ioctl(&sc->sc_ic, cmd, data)) != ENETRESET) 3063 ; /* nothing to do */ 3064 else if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) { 3065 /* reload packet filter if running */ 3066 if (ifp->if_flags & IFF_RUNNING) 3067 rtw_pktfilt_load(sc); 3068 rc = 0; 3069 } else if ((ifp->if_flags & IFF_UP) != 0) 3070 rc = rtw_init(ifp); 3071 else 3072 rc = 0; 3073 splx(s); 3074 return rc; 3075 } 3076 3077 /* Select a transmit ring with at least one h/w and s/w descriptor free. 3078 * Return 0 on success, -1 on failure. 3079 */ 3080 static inline int 3081 rtw_txring_choose(struct rtw_softc *sc, struct rtw_txsoft_blk **tsbp, 3082 struct rtw_txdesc_blk **tdbp, int pri) 3083 { 3084 struct rtw_txsoft_blk *tsb; 3085 struct rtw_txdesc_blk *tdb; 3086 3087 KASSERT(pri >= 0 && pri < RTW_NTXPRI); 3088 3089 tsb = &sc->sc_txsoft_blk[pri]; 3090 tdb = &sc->sc_txdesc_blk[pri]; 3091 3092 if (SIMPLEQ_EMPTY(&tsb->tsb_freeq) || tdb->tdb_nfree == 0) { 3093 if (tsb->tsb_tx_timer == 0) 3094 tsb->tsb_tx_timer = 5; 3095 *tsbp = NULL; 3096 *tdbp = NULL; 3097 return -1; 3098 } 3099 *tsbp = tsb; 3100 *tdbp = tdb; 3101 return 0; 3102 } 3103 3104 static inline struct mbuf * 3105 rtw_80211_dequeue(struct rtw_softc *sc, struct ifqueue *ifq, int pri, 3106 struct rtw_txsoft_blk **tsbp, struct rtw_txdesc_blk **tdbp, 3107 struct ieee80211_node **nip, short *if_flagsp) 3108 { 3109 struct mbuf *m; 3110 3111 if (IF_IS_EMPTY(ifq)) 3112 return NULL; 3113 if (rtw_txring_choose(sc, tsbp, tdbp, pri) == -1) { 3114 DPRINTF(sc, RTW_DEBUG_XMIT_RSRC, ("%s: no ring %d descriptor\n", 3115 __func__, pri)); 3116 *if_flagsp |= IFF_OACTIVE; 3117 sc->sc_if.if_timer = 1; 3118 return NULL; 3119 } 3120 IF_DEQUEUE(ifq, m); 3121 *nip = M_GETCTX(m, struct ieee80211_node *); 3122 M_SETCTX(m, NULL); 3123 KASSERT(*nip != NULL); 3124 return m; 3125 } 3126 3127 /* Point *mp at the next 802.11 frame to transmit. Point *tsbp 3128 * at the driver's selection of transmit control block for the packet. 3129 */ 3130 static inline int 3131 rtw_dequeue(struct ifnet *ifp, struct rtw_txsoft_blk **tsbp, 3132 struct rtw_txdesc_blk **tdbp, struct mbuf **mp, 3133 struct ieee80211_node **nip) 3134 { 3135 int pri; 3136 struct ether_header *eh; 3137 struct mbuf *m0; 3138 struct rtw_softc *sc; 3139 short *if_flagsp; 3140 3141 *mp = NULL; 3142 3143 sc = (struct rtw_softc *)ifp->if_softc; 3144 3145 DPRINTF(sc, RTW_DEBUG_XMIT, 3146 ("%s: enter %s\n", device_xname(sc->sc_dev), __func__)); 3147 3148 if_flagsp = &ifp->if_flags; 3149 3150 if (sc->sc_ic.ic_state == IEEE80211_S_RUN && 3151 (*mp = rtw_80211_dequeue(sc, &sc->sc_beaconq, RTW_TXPRIBCN, tsbp, 3152 tdbp, nip, if_flagsp)) != NULL) { 3153 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: dequeue beacon frame\n", 3154 __func__)); 3155 return 0; 3156 } 3157 3158 if ((*mp = rtw_80211_dequeue(sc, &sc->sc_ic.ic_mgtq, RTW_TXPRIMD, tsbp, 3159 tdbp, nip, if_flagsp)) != NULL) { 3160 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: dequeue mgt frame\n", 3161 __func__)); 3162 return 0; 3163 } 3164 3165 if (sc->sc_ic.ic_state != IEEE80211_S_RUN) { 3166 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: not running\n", __func__)); 3167 return 0; 3168 } 3169 3170 IFQ_POLL(&ifp->if_snd, m0); 3171 if (m0 == NULL) { 3172 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: no frame ready\n", 3173 __func__)); 3174 return 0; 3175 } 3176 3177 pri = ((m0->m_flags & M_PWR_SAV) != 0) ? RTW_TXPRIHI : RTW_TXPRIMD; 3178 3179 if (rtw_txring_choose(sc, tsbp, tdbp, pri) == -1) { 3180 DPRINTF(sc, RTW_DEBUG_XMIT_RSRC, ("%s: no ring %d descriptor\n", 3181 __func__, pri)); 3182 *if_flagsp |= IFF_OACTIVE; 3183 sc->sc_if.if_timer = 1; 3184 return 0; 3185 } 3186 3187 IFQ_DEQUEUE(&ifp->if_snd, m0); 3188 if (m0 == NULL) { 3189 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: no frame ready\n", 3190 __func__)); 3191 return 0; 3192 } 3193 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: dequeue data frame\n", __func__)); 3194 ifp->if_opackets++; 3195 bpf_mtap(ifp, m0, BPF_D_OUT); 3196 eh = mtod(m0, struct ether_header *); 3197 *nip = ieee80211_find_txnode(&sc->sc_ic, eh->ether_dhost); 3198 if (*nip == NULL) { 3199 /* NB: ieee80211_find_txnode does stat+msg */ 3200 m_freem(m0); 3201 return -1; 3202 } 3203 if ((m0 = ieee80211_encap(&sc->sc_ic, m0, *nip)) == NULL) { 3204 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: encap error\n", __func__)); 3205 ifp->if_oerrors++; 3206 return -1; 3207 } 3208 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: leave\n", __func__)); 3209 *mp = m0; 3210 return 0; 3211 } 3212 3213 static int 3214 rtw_seg_too_short(bus_dmamap_t dmamap) 3215 { 3216 int i; 3217 for (i = 0; i < dmamap->dm_nsegs; i++) { 3218 if (dmamap->dm_segs[i].ds_len < 4) 3219 return 1; 3220 } 3221 return 0; 3222 } 3223 3224 /* TBD factor with atw_start */ 3225 static struct mbuf * 3226 rtw_dmamap_load_txbuf(bus_dma_tag_t dmat, bus_dmamap_t dmam, struct mbuf *chain, 3227 u_int ndescfree, device_t dev) 3228 { 3229 int first, rc; 3230 struct mbuf *m, *m0; 3231 3232 m0 = chain; 3233 3234 /* 3235 * Load the DMA map. Copy and try (once) again if the packet 3236 * didn't fit in the alloted number of segments. 3237 */ 3238 for (first = 1; 3239 ((rc = bus_dmamap_load_mbuf(dmat, dmam, m0, 3240 BUS_DMA_WRITE | BUS_DMA_NOWAIT)) != 0 || 3241 dmam->dm_nsegs > ndescfree || rtw_seg_too_short(dmam)) && first; 3242 first = 0) { 3243 if (rc == 0) { 3244 #ifdef RTW_DIAGxxx 3245 if (rtw_seg_too_short(dmam)) { 3246 printf("%s: short segment, mbuf lengths:", __func__); 3247 for (m = m0; m; m = m->m_next) 3248 printf(" %d", m->m_len); 3249 printf("\n"); 3250 } 3251 #endif 3252 bus_dmamap_unload(dmat, dmam); 3253 } 3254 MGETHDR(m, M_DONTWAIT, MT_DATA); 3255 if (m == NULL) { 3256 aprint_error_dev(dev, "unable to allocate Tx mbuf\n"); 3257 break; 3258 } 3259 if (m0->m_pkthdr.len > MHLEN) { 3260 MCLGET(m, M_DONTWAIT); 3261 if ((m->m_flags & M_EXT) == 0) { 3262 aprint_error_dev(dev, 3263 "cannot allocate Tx cluster\n"); 3264 m_freem(m); 3265 break; 3266 } 3267 } 3268 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(m, void *)); 3269 m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; 3270 m_freem(m0); 3271 m0 = m; 3272 m = NULL; 3273 } 3274 if (rc != 0) { 3275 aprint_error_dev(dev, "cannot load Tx buffer, rc = %d\n", rc); 3276 m_freem(m0); 3277 return NULL; 3278 } else if (rtw_seg_too_short(dmam)) { 3279 aprint_error_dev(dev, 3280 "cannot load Tx buffer, segment too short\n"); 3281 bus_dmamap_unload(dmat, dmam); 3282 m_freem(m0); 3283 return NULL; 3284 } else if (dmam->dm_nsegs > ndescfree) { 3285 aprint_error_dev(dev, "too many tx segments\n"); 3286 bus_dmamap_unload(dmat, dmam); 3287 m_freem(m0); 3288 return NULL; 3289 } 3290 return m0; 3291 } 3292 3293 #ifdef RTW_DEBUG 3294 static void 3295 rtw_print_txdesc(struct rtw_softc *sc, const char *action, 3296 struct rtw_txsoft *ts, struct rtw_txdesc_blk *tdb, int desc) 3297 { 3298 struct rtw_txdesc *td = &tdb->tdb_desc[desc]; 3299 DPRINTF(sc, RTW_DEBUG_XMIT_DESC, ("%s: %p %s txdesc[%d] next %#08x " 3300 "buf %#08x ctl0 %#08x ctl1 %#08x len %#08x\n", 3301 device_xname(sc->sc_dev), ts, action, desc, 3302 le32toh(td->td_buf), le32toh(td->td_next), 3303 le32toh(td->td_ctl0), le32toh(td->td_ctl1), 3304 le32toh(td->td_len))); 3305 } 3306 #endif /* RTW_DEBUG */ 3307 3308 static void 3309 rtw_start(struct ifnet *ifp) 3310 { 3311 int desc, i, lastdesc, npkt, rate; 3312 uint32_t proto_ctl0, ctl0, ctl1; 3313 bus_dmamap_t dmamap; 3314 struct ieee80211com *ic; 3315 struct ieee80211_duration *d0; 3316 struct ieee80211_frame_min *wh; 3317 struct ieee80211_node *ni = NULL; /* XXX: GCC */ 3318 struct mbuf *m0; 3319 struct rtw_softc *sc; 3320 struct rtw_txsoft_blk *tsb = NULL; /* XXX: GCC */ 3321 struct rtw_txdesc_blk *tdb = NULL; /* XXX: GCC */ 3322 struct rtw_txsoft *ts; 3323 struct rtw_txdesc *td; 3324 struct ieee80211_key *k; 3325 3326 sc = (struct rtw_softc *)ifp->if_softc; 3327 ic = &sc->sc_ic; 3328 3329 DPRINTF(sc, RTW_DEBUG_XMIT, 3330 ("%s: enter %s\n", device_xname(sc->sc_dev), __func__)); 3331 3332 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 3333 goto out; 3334 3335 /* XXX do real rate control */ 3336 proto_ctl0 = RTW_TXCTL0_RTSRATE_1MBPS; 3337 3338 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0) 3339 proto_ctl0 |= RTW_TXCTL0_SPLCP; 3340 3341 for (;;) { 3342 if (rtw_dequeue(ifp, &tsb, &tdb, &m0, &ni) == -1) 3343 continue; 3344 if (m0 == NULL) 3345 break; 3346 3347 wh = mtod(m0, struct ieee80211_frame_min *); 3348 3349 if ((wh->i_fc[1] & IEEE80211_FC1_WEP) != 0 && 3350 (k = ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 3351 m_freem(m0); 3352 break; 3353 } else 3354 k = NULL; 3355 3356 ts = SIMPLEQ_FIRST(&tsb->tsb_freeq); 3357 3358 dmamap = ts->ts_dmamap; 3359 3360 m0 = rtw_dmamap_load_txbuf(sc->sc_dmat, dmamap, m0, 3361 tdb->tdb_nfree, sc->sc_dev); 3362 3363 if (m0 == NULL || dmamap->dm_nsegs == 0) { 3364 DPRINTF(sc, RTW_DEBUG_XMIT, 3365 ("%s: fail dmamap load\n", __func__)); 3366 goto post_dequeue_err; 3367 } 3368 3369 /* Note well: rtw_dmamap_load_txbuf may have created 3370 * a new chain, so we must find the header once 3371 * more. 3372 */ 3373 wh = mtod(m0, struct ieee80211_frame_min *); 3374 3375 /* XXX do real rate control */ 3376 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 3377 IEEE80211_FC0_TYPE_MGT) 3378 rate = 2; 3379 else 3380 rate = MAX(2, ieee80211_get_rate(ni)); 3381 3382 #ifdef RTW_DEBUG 3383 if ((ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == 3384 (IFF_DEBUG | IFF_LINK2)) { 3385 ieee80211_dump_pkt(mtod(m0, uint8_t *), 3386 (dmamap->dm_nsegs == 1) ? m0->m_pkthdr.len 3387 : sizeof(wh), 3388 rate, 0); 3389 } 3390 #endif /* RTW_DEBUG */ 3391 ctl0 = proto_ctl0 | 3392 __SHIFTIN(m0->m_pkthdr.len, RTW_TXCTL0_TPKTSIZE_MASK); 3393 3394 switch (rate) { 3395 default: 3396 case 2: 3397 ctl0 |= RTW_TXCTL0_RATE_1MBPS; 3398 break; 3399 case 4: 3400 ctl0 |= RTW_TXCTL0_RATE_2MBPS; 3401 break; 3402 case 11: 3403 ctl0 |= RTW_TXCTL0_RATE_5MBPS; 3404 break; 3405 case 22: 3406 ctl0 |= RTW_TXCTL0_RATE_11MBPS; 3407 break; 3408 } 3409 /* XXX >= ? Compare after fragmentation? */ 3410 if (m0->m_pkthdr.len > ic->ic_rtsthreshold) 3411 ctl0 |= RTW_TXCTL0_RTSEN; 3412 3413 /* XXX Sometimes writes a bogus keyid; h/w doesn't 3414 * seem to care, since we don't activate h/w Tx 3415 * encryption. 3416 */ 3417 if (k != NULL && 3418 k->wk_cipher->ic_cipher == IEEE80211_CIPHER_WEP) { 3419 ctl0 |= __SHIFTIN(k->wk_keyix, RTW_TXCTL0_KEYID_MASK) & 3420 RTW_TXCTL0_KEYID_MASK; 3421 } 3422 3423 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 3424 IEEE80211_FC0_TYPE_MGT) { 3425 ctl0 &= ~(RTW_TXCTL0_SPLCP | RTW_TXCTL0_RTSEN); 3426 if ((wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 3427 IEEE80211_FC0_SUBTYPE_BEACON) 3428 ctl0 |= RTW_TXCTL0_BEACON; 3429 } 3430 3431 if (ieee80211_compute_duration(wh, k, m0->m_pkthdr.len, 3432 ic->ic_flags, ic->ic_fragthreshold, 3433 rate, &ts->ts_d0, &ts->ts_dn, &npkt, 3434 (ifp->if_flags & (IFF_DEBUG | IFF_LINK2)) == 3435 (IFF_DEBUG | IFF_LINK2)) == -1) { 3436 DPRINTF(sc, RTW_DEBUG_XMIT, 3437 ("%s: fail compute duration\n", __func__)); 3438 goto post_load_err; 3439 } 3440 3441 d0 = &ts->ts_d0; 3442 3443 *(uint16_t*)wh->i_dur = htole16(d0->d_data_dur); 3444 3445 ctl1 = __SHIFTIN(d0->d_plcp_len, RTW_TXCTL1_LENGTH_MASK) | 3446 __SHIFTIN(d0->d_rts_dur, RTW_TXCTL1_RTSDUR_MASK); 3447 3448 if (d0->d_residue) 3449 ctl1 |= RTW_TXCTL1_LENGEXT; 3450 3451 /* TBD fragmentation */ 3452 3453 ts->ts_first = tdb->tdb_next; 3454 3455 rtw_txdescs_sync(tdb, ts->ts_first, dmamap->dm_nsegs, 3456 BUS_DMASYNC_PREWRITE); 3457 3458 KASSERT(ts->ts_first < tdb->tdb_ndesc); 3459 3460 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 3461 3462 if (sc->sc_radiobpf != NULL) { 3463 struct rtw_tx_radiotap_header *rt = &sc->sc_txtap; 3464 3465 rt->rt_rate = rate; 3466 3467 bpf_mtap2(sc->sc_radiobpf, rt, sizeof(sc->sc_txtapu), 3468 m0, BPF_D_OUT); 3469 } 3470 3471 for (i = 0, lastdesc = desc = ts->ts_first; 3472 i < dmamap->dm_nsegs; 3473 i++, desc = RTW_NEXT_IDX(tdb, desc)) { 3474 if (dmamap->dm_segs[i].ds_len > RTW_TXLEN_LENGTH_MASK) { 3475 DPRINTF(sc, RTW_DEBUG_XMIT_DESC, 3476 ("%s: seg too long\n", __func__)); 3477 goto post_load_err; 3478 } 3479 td = &tdb->tdb_desc[desc]; 3480 td->td_ctl0 = htole32(ctl0); 3481 td->td_ctl1 = htole32(ctl1); 3482 td->td_buf = htole32(dmamap->dm_segs[i].ds_addr); 3483 td->td_len = htole32(dmamap->dm_segs[i].ds_len); 3484 td->td_next = htole32(RTW_NEXT_DESC(tdb, desc)); 3485 if (i != 0) 3486 td->td_ctl0 |= htole32(RTW_TXCTL0_OWN); 3487 lastdesc = desc; 3488 #ifdef RTW_DEBUG 3489 rtw_print_txdesc(sc, "load", ts, tdb, desc); 3490 #endif /* RTW_DEBUG */ 3491 } 3492 3493 KASSERT(desc < tdb->tdb_ndesc); 3494 3495 ts->ts_ni = ni; 3496 KASSERT(ni != NULL); 3497 ts->ts_mbuf = m0; 3498 ts->ts_last = lastdesc; 3499 tdb->tdb_desc[ts->ts_last].td_ctl0 |= htole32(RTW_TXCTL0_LS); 3500 tdb->tdb_desc[ts->ts_first].td_ctl0 |= 3501 htole32(RTW_TXCTL0_FS); 3502 3503 #ifdef RTW_DEBUG 3504 rtw_print_txdesc(sc, "FS on", ts, tdb, ts->ts_first); 3505 rtw_print_txdesc(sc, "LS on", ts, tdb, ts->ts_last); 3506 #endif /* RTW_DEBUG */ 3507 3508 tdb->tdb_nfree -= dmamap->dm_nsegs; 3509 tdb->tdb_next = desc; 3510 3511 rtw_txdescs_sync(tdb, ts->ts_first, dmamap->dm_nsegs, 3512 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3513 3514 tdb->tdb_desc[ts->ts_first].td_ctl0 |= 3515 htole32(RTW_TXCTL0_OWN); 3516 3517 #ifdef RTW_DEBUG 3518 rtw_print_txdesc(sc, "OWN on", ts, tdb, ts->ts_first); 3519 #endif /* RTW_DEBUG */ 3520 3521 rtw_txdescs_sync(tdb, ts->ts_first, 1, 3522 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 3523 3524 SIMPLEQ_REMOVE_HEAD(&tsb->tsb_freeq, ts_q); 3525 SIMPLEQ_INSERT_TAIL(&tsb->tsb_dirtyq, ts, ts_q); 3526 3527 if (tsb != &sc->sc_txsoft_blk[RTW_TXPRIBCN]) 3528 sc->sc_led_state.ls_event |= RTW_LED_S_TX; 3529 tsb->tsb_tx_timer = 5; 3530 ifp->if_timer = 1; 3531 rtw_tx_kick(&sc->sc_regs, tsb->tsb_poll); 3532 } 3533 out: 3534 DPRINTF(sc, RTW_DEBUG_XMIT, ("%s: leave\n", __func__)); 3535 return; 3536 post_load_err: 3537 bus_dmamap_unload(sc->sc_dmat, dmamap); 3538 m_freem(m0); 3539 post_dequeue_err: 3540 ieee80211_free_node(ni); 3541 return; 3542 } 3543 3544 static void 3545 rtw_idle(struct rtw_regs *regs) 3546 { 3547 int active; 3548 uint8_t tppoll; 3549 3550 /* request stop DMA; wait for packets to stop transmitting. */ 3551 3552 RTW_WRITE8(regs, RTW_TPPOLL, RTW_TPPOLL_SALL); 3553 RTW_WBR(regs, RTW_TPPOLL, RTW_TPPOLL); 3554 3555 for (active = 0; active < 300 && 3556 (tppoll = RTW_READ8(regs, RTW_TPPOLL) & RTW_TPPOLL_ACTIVE) != 0; 3557 active++) 3558 DELAY(10); 3559 printf("%s: transmit DMA idle in %dus, tppoll %02" PRIx8 "\n", __func__, 3560 active * 10, tppoll); 3561 } 3562 3563 static void 3564 rtw_watchdog(struct ifnet *ifp) 3565 { 3566 int pri, tx_timeouts = 0; 3567 struct rtw_softc *sc; 3568 struct rtw_txsoft_blk *tsb; 3569 3570 sc = ifp->if_softc; 3571 3572 ifp->if_timer = 0; 3573 3574 if (!device_is_active(sc->sc_dev)) 3575 return; 3576 3577 for (pri = 0; pri < RTW_NTXPRI; pri++) { 3578 tsb = &sc->sc_txsoft_blk[pri]; 3579 3580 if (tsb->tsb_tx_timer == 0) 3581 continue; 3582 else if (--tsb->tsb_tx_timer == 0) { 3583 if (SIMPLEQ_EMPTY(&tsb->tsb_dirtyq)) 3584 continue; 3585 else if (rtw_collect_txring(sc, tsb, 3586 &sc->sc_txdesc_blk[pri], 0)) 3587 continue; 3588 printf("%s: transmit timeout, priority %d\n", 3589 ifp->if_xname, pri); 3590 ifp->if_oerrors++; 3591 if (pri != RTW_TXPRIBCN) 3592 tx_timeouts++; 3593 } else 3594 ifp->if_timer = 1; 3595 } 3596 3597 if (tx_timeouts > 0) { 3598 /* Stop Tx DMA, disable xmtr, flush Tx rings, enable xmtr, 3599 * reset s/w tx-ring pointers, and start transmission. 3600 * 3601 * TBD Stop/restart just the broken rings? 3602 */ 3603 rtw_idle(&sc->sc_regs); 3604 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 0); 3605 rtw_txdescs_reset(sc); 3606 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 3607 rtw_start(ifp); 3608 } 3609 ieee80211_watchdog(&sc->sc_ic); 3610 return; 3611 } 3612 3613 static void 3614 rtw_next_scan(void *arg) 3615 { 3616 struct ieee80211com *ic = arg; 3617 int s; 3618 3619 /* don't call rtw_start w/o network interrupts blocked */ 3620 s = splnet(); 3621 if (ic->ic_state == IEEE80211_S_SCAN) 3622 ieee80211_next_scan(ic); 3623 splx(s); 3624 } 3625 3626 static void 3627 rtw_join_bss(struct rtw_softc *sc, uint8_t *bssid, uint16_t intval0) 3628 { 3629 uint16_t bcnitv, bintritv, intval; 3630 int i; 3631 struct rtw_regs *regs = &sc->sc_regs; 3632 3633 for (i = 0; i < IEEE80211_ADDR_LEN; i++) 3634 RTW_WRITE8(regs, RTW_BSSID + i, bssid[i]); 3635 3636 RTW_SYNC(regs, RTW_BSSID16, RTW_BSSID32); 3637 3638 rtw_set_access(regs, RTW_ACCESS_CONFIG); 3639 3640 intval = MIN(intval0, __SHIFTOUT_MASK(RTW_BCNITV_BCNITV_MASK)); 3641 3642 bcnitv = RTW_READ16(regs, RTW_BCNITV) & ~RTW_BCNITV_BCNITV_MASK; 3643 bcnitv |= __SHIFTIN(intval, RTW_BCNITV_BCNITV_MASK); 3644 RTW_WRITE16(regs, RTW_BCNITV, bcnitv); 3645 /* interrupt host 1ms before the TBTT */ 3646 bintritv = RTW_READ16(regs, RTW_BINTRITV) & ~RTW_BINTRITV_BINTRITV; 3647 bintritv |= __SHIFTIN(1000, RTW_BINTRITV_BINTRITV); 3648 RTW_WRITE16(regs, RTW_BINTRITV, bintritv); 3649 /* magic from Linux */ 3650 RTW_WRITE16(regs, RTW_ATIMWND, __SHIFTIN(1, RTW_ATIMWND_ATIMWND)); 3651 RTW_WRITE16(regs, RTW_ATIMTRITV, __SHIFTIN(2, RTW_ATIMTRITV_ATIMTRITV)); 3652 rtw_set_access(regs, RTW_ACCESS_NONE); 3653 3654 rtw_io_enable(sc, RTW_CR_RE | RTW_CR_TE, 1); 3655 } 3656 3657 /* Synchronize the hardware state with the software state. */ 3658 static int 3659 rtw_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 3660 { 3661 struct ifnet *ifp = ic->ic_ifp; 3662 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3663 enum ieee80211_state ostate; 3664 int error; 3665 3666 ostate = ic->ic_state; 3667 3668 aprint_debug_dev(sc->sc_dev, "%s: l.%d\n", __func__, __LINE__); 3669 rtw_led_newstate(sc, nstate); 3670 3671 aprint_debug_dev(sc->sc_dev, "%s: l.%d\n", __func__, __LINE__); 3672 if (nstate == IEEE80211_S_INIT) { 3673 callout_stop(&sc->sc_scan_ch); 3674 sc->sc_cur_chan = IEEE80211_CHAN_ANY; 3675 return (*sc->sc_mtbl.mt_newstate)(ic, nstate, arg); 3676 } 3677 3678 if (ostate == IEEE80211_S_INIT && nstate != IEEE80211_S_INIT) 3679 rtw_pwrstate(sc, RTW_ON); 3680 3681 if ((error = rtw_tune(sc)) != 0) 3682 return error; 3683 3684 switch (nstate) { 3685 case IEEE80211_S_INIT: 3686 panic("%s: unexpected state IEEE80211_S_INIT\n", __func__); 3687 break; 3688 case IEEE80211_S_SCAN: 3689 if (ostate != IEEE80211_S_SCAN) { 3690 (void)memset(ic->ic_bss->ni_bssid, 0, 3691 IEEE80211_ADDR_LEN); 3692 rtw_set_nettype(sc, IEEE80211_M_MONITOR); 3693 } 3694 3695 callout_reset(&sc->sc_scan_ch, rtw_dwelltime * hz / 1000, 3696 rtw_next_scan, ic); 3697 3698 break; 3699 case IEEE80211_S_RUN: 3700 switch (ic->ic_opmode) { 3701 case IEEE80211_M_HOSTAP: 3702 case IEEE80211_M_IBSS: 3703 rtw_set_nettype(sc, IEEE80211_M_MONITOR); 3704 /*FALLTHROUGH*/ 3705 case IEEE80211_M_AHDEMO: 3706 case IEEE80211_M_STA: 3707 rtw_join_bss(sc, ic->ic_bss->ni_bssid, 3708 ic->ic_bss->ni_intval); 3709 break; 3710 case IEEE80211_M_MONITOR: 3711 break; 3712 } 3713 rtw_set_nettype(sc, ic->ic_opmode); 3714 break; 3715 case IEEE80211_S_ASSOC: 3716 case IEEE80211_S_AUTH: 3717 break; 3718 } 3719 3720 if (nstate != IEEE80211_S_SCAN) 3721 callout_stop(&sc->sc_scan_ch); 3722 3723 return (*sc->sc_mtbl.mt_newstate)(ic, nstate, arg); 3724 } 3725 3726 /* Extend a 32-bit TSF timestamp to a 64-bit timestamp. */ 3727 static uint64_t 3728 rtw_tsf_extend(struct rtw_regs *regs, uint32_t rstamp) 3729 { 3730 uint32_t tsftl, tsfth; 3731 3732 tsfth = RTW_READ(regs, RTW_TSFTRH); 3733 tsftl = RTW_READ(regs, RTW_TSFTRL); 3734 if (tsftl < rstamp) /* Compensate for rollover. */ 3735 tsfth--; 3736 return ((uint64_t)tsfth << 32) | rstamp; 3737 } 3738 3739 static void 3740 rtw_recv_mgmt(struct ieee80211com *ic, struct mbuf *m, 3741 struct ieee80211_node *ni, int subtype, int rssi, uint32_t rstamp) 3742 { 3743 struct ifnet *ifp = ic->ic_ifp; 3744 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3745 3746 (*sc->sc_mtbl.mt_recv_mgmt)(ic, m, ni, subtype, rssi, rstamp); 3747 3748 switch (subtype) { 3749 case IEEE80211_FC0_SUBTYPE_PROBE_RESP: 3750 case IEEE80211_FC0_SUBTYPE_BEACON: 3751 if (ic->ic_opmode == IEEE80211_M_IBSS && 3752 ic->ic_state == IEEE80211_S_RUN && 3753 device_is_active(sc->sc_dev)) { 3754 uint64_t tsf = rtw_tsf_extend(&sc->sc_regs, rstamp); 3755 if (le64toh(ni->ni_tstamp.tsf) >= tsf) 3756 (void)ieee80211_ibss_merge(ni); 3757 } 3758 break; 3759 default: 3760 break; 3761 } 3762 return; 3763 } 3764 3765 static struct ieee80211_node * 3766 rtw_node_alloc(struct ieee80211_node_table *nt) 3767 { 3768 struct ifnet *ifp = nt->nt_ic->ic_ifp; 3769 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3770 struct ieee80211_node *ni = (*sc->sc_mtbl.mt_node_alloc)(nt); 3771 3772 DPRINTF(sc, RTW_DEBUG_NODE, 3773 ("%s: alloc node %p\n", device_xname(sc->sc_dev), ni)); 3774 return ni; 3775 } 3776 3777 static void 3778 rtw_node_free(struct ieee80211_node *ni) 3779 { 3780 struct ieee80211com *ic = ni->ni_ic; 3781 struct ifnet *ifp = ic->ic_ifp; 3782 struct rtw_softc *sc = (struct rtw_softc *)ifp->if_softc; 3783 3784 DPRINTF(sc, RTW_DEBUG_NODE, 3785 ("%s: freeing node %p %s\n", device_xname(sc->sc_dev), ni, 3786 ether_sprintf(ni->ni_bssid))); 3787 (*sc->sc_mtbl.mt_node_free)(ni); 3788 } 3789 3790 static int 3791 rtw_media_change(struct ifnet *ifp) 3792 { 3793 int error; 3794 3795 error = ieee80211_media_change(ifp); 3796 if (error == ENETRESET) { 3797 if ((ifp->if_flags & (IFF_RUNNING | IFF_UP)) == 3798 (IFF_RUNNING | IFF_UP)) 3799 rtw_init(ifp); /* XXX lose error */ 3800 error = 0; 3801 } 3802 return error; 3803 } 3804 3805 static void 3806 rtw_media_status(struct ifnet *ifp, struct ifmediareq *imr) 3807 { 3808 struct rtw_softc *sc = ifp->if_softc; 3809 3810 if (!device_is_active(sc->sc_dev)) { 3811 imr->ifm_active = IFM_IEEE80211 | IFM_NONE; 3812 imr->ifm_status = 0; 3813 return; 3814 } 3815 ieee80211_media_status(ifp, imr); 3816 } 3817 3818 static inline void 3819 rtw_setifprops(struct ifnet *ifp, const char *dvname, void *softc) 3820 { 3821 (void)strlcpy(ifp->if_xname, dvname, IFNAMSIZ); 3822 ifp->if_softc = softc; 3823 ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 3824 ifp->if_ioctl = rtw_ioctl; 3825 ifp->if_start = rtw_start; 3826 ifp->if_watchdog = rtw_watchdog; 3827 ifp->if_init = rtw_init; 3828 ifp->if_stop = rtw_stop; 3829 } 3830 3831 static inline void 3832 rtw_set80211props(struct ieee80211com *ic) 3833 { 3834 int nrate; 3835 ic->ic_phytype = IEEE80211_T_DS; 3836 ic->ic_opmode = IEEE80211_M_STA; 3837 ic->ic_caps = IEEE80211_C_PMGT | IEEE80211_C_IBSS | 3838 IEEE80211_C_HOSTAP | IEEE80211_C_MONITOR | IEEE80211_C_WEP; 3839 3840 nrate = 0; 3841 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 3842 IEEE80211_RATE_BASIC | 2; 3843 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 3844 IEEE80211_RATE_BASIC | 4; 3845 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 11; 3846 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_rates[nrate++] = 22; 3847 ic->ic_sup_rates[IEEE80211_MODE_11B].rs_nrates = nrate; 3848 } 3849 3850 static inline void 3851 rtw_set80211methods(struct rtw_mtbl *mtbl, struct ieee80211com *ic) 3852 { 3853 mtbl->mt_newstate = ic->ic_newstate; 3854 ic->ic_newstate = rtw_newstate; 3855 3856 mtbl->mt_recv_mgmt = ic->ic_recv_mgmt; 3857 ic->ic_recv_mgmt = rtw_recv_mgmt; 3858 3859 mtbl->mt_node_free = ic->ic_node_free; 3860 ic->ic_node_free = rtw_node_free; 3861 3862 mtbl->mt_node_alloc = ic->ic_node_alloc; 3863 ic->ic_node_alloc = rtw_node_alloc; 3864 3865 ic->ic_crypto.cs_key_delete = rtw_key_delete; 3866 ic->ic_crypto.cs_key_set = rtw_key_set; 3867 ic->ic_crypto.cs_key_update_begin = rtw_key_update_begin; 3868 ic->ic_crypto.cs_key_update_end = rtw_key_update_end; 3869 } 3870 3871 static inline void 3872 rtw_init_radiotap(struct rtw_softc *sc) 3873 { 3874 uint32_t present; 3875 3876 memset(&sc->sc_rxtapu, 0, sizeof(sc->sc_rxtapu)); 3877 sc->sc_rxtap.rr_ihdr.it_len = htole16(sizeof(sc->sc_rxtapu)); 3878 3879 if (sc->sc_rfchipid == RTW_RFCHIPID_PHILIPS) 3880 present = htole32(RTW_PHILIPS_RX_RADIOTAP_PRESENT); 3881 else 3882 present = htole32(RTW_RX_RADIOTAP_PRESENT); 3883 sc->sc_rxtap.rr_ihdr.it_present = present; 3884 3885 memset(&sc->sc_txtapu, 0, sizeof(sc->sc_txtapu)); 3886 sc->sc_txtap.rt_ihdr.it_len = htole16(sizeof(sc->sc_txtapu)); 3887 sc->sc_txtap.rt_ihdr.it_present = htole32(RTW_TX_RADIOTAP_PRESENT); 3888 } 3889 3890 static int 3891 rtw_txsoft_blk_setup(struct rtw_txsoft_blk *tsb, u_int qlen) 3892 { 3893 SIMPLEQ_INIT(&tsb->tsb_dirtyq); 3894 SIMPLEQ_INIT(&tsb->tsb_freeq); 3895 tsb->tsb_ndesc = qlen; 3896 tsb->tsb_desc = malloc(qlen * sizeof(*tsb->tsb_desc), M_DEVBUF, 3897 M_NOWAIT); 3898 if (tsb->tsb_desc == NULL) 3899 return ENOMEM; 3900 return 0; 3901 } 3902 3903 static void 3904 rtw_txsoft_blk_cleanup_all(struct rtw_softc *sc) 3905 { 3906 int pri; 3907 struct rtw_txsoft_blk *tsb; 3908 3909 for (pri = 0; pri < RTW_NTXPRI; pri++) { 3910 tsb = &sc->sc_txsoft_blk[pri]; 3911 free(tsb->tsb_desc, M_DEVBUF); 3912 tsb->tsb_desc = NULL; 3913 } 3914 } 3915 3916 static int 3917 rtw_txsoft_blk_setup_all(struct rtw_softc *sc) 3918 { 3919 int pri, rc = 0; 3920 int qlen[RTW_NTXPRI] = 3921 {RTW_TXQLENLO, RTW_TXQLENMD, RTW_TXQLENHI, RTW_TXQLENBCN}; 3922 struct rtw_txsoft_blk *tsbs; 3923 3924 tsbs = sc->sc_txsoft_blk; 3925 3926 for (pri = 0; pri < RTW_NTXPRI; pri++) { 3927 rc = rtw_txsoft_blk_setup(&tsbs[pri], qlen[pri]); 3928 if (rc != 0) 3929 break; 3930 } 3931 tsbs[RTW_TXPRILO].tsb_poll = RTW_TPPOLL_LPQ | RTW_TPPOLL_SLPQ; 3932 tsbs[RTW_TXPRIMD].tsb_poll = RTW_TPPOLL_NPQ | RTW_TPPOLL_SNPQ; 3933 tsbs[RTW_TXPRIHI].tsb_poll = RTW_TPPOLL_HPQ | RTW_TPPOLL_SHPQ; 3934 tsbs[RTW_TXPRIBCN].tsb_poll = RTW_TPPOLL_BQ | RTW_TPPOLL_SBQ; 3935 return rc; 3936 } 3937 3938 static void 3939 rtw_txdesc_blk_setup(struct rtw_txdesc_blk *tdb, struct rtw_txdesc *desc, 3940 u_int ndesc, bus_addr_t ofs, bus_addr_t physbase) 3941 { 3942 tdb->tdb_ndesc = ndesc; 3943 tdb->tdb_desc = desc; 3944 tdb->tdb_physbase = physbase; 3945 tdb->tdb_ofs = ofs; 3946 3947 (void)memset(tdb->tdb_desc, 0, 3948 sizeof(tdb->tdb_desc[0]) * tdb->tdb_ndesc); 3949 3950 rtw_txdesc_blk_init(tdb); 3951 tdb->tdb_next = 0; 3952 } 3953 3954 static void 3955 rtw_txdesc_blk_setup_all(struct rtw_softc *sc) 3956 { 3957 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRILO], 3958 &sc->sc_descs->hd_txlo[0], RTW_NTXDESCLO, 3959 RTW_RING_OFFSET(hd_txlo), RTW_RING_BASE(sc, hd_txlo)); 3960 3961 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRIMD], 3962 &sc->sc_descs->hd_txmd[0], RTW_NTXDESCMD, 3963 RTW_RING_OFFSET(hd_txmd), RTW_RING_BASE(sc, hd_txmd)); 3964 3965 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRIHI], 3966 &sc->sc_descs->hd_txhi[0], RTW_NTXDESCHI, 3967 RTW_RING_OFFSET(hd_txhi), RTW_RING_BASE(sc, hd_txhi)); 3968 3969 rtw_txdesc_blk_setup(&sc->sc_txdesc_blk[RTW_TXPRIBCN], 3970 &sc->sc_descs->hd_bcn[0], RTW_NTXDESCBCN, 3971 RTW_RING_OFFSET(hd_bcn), RTW_RING_BASE(sc, hd_bcn)); 3972 } 3973 3974 static struct rtw_rf * 3975 rtw_rf_attach(struct rtw_softc *sc, enum rtw_rfchipid rfchipid, int digphy) 3976 { 3977 rtw_rf_write_t rf_write; 3978 struct rtw_rf *rf; 3979 3980 switch (rfchipid) { 3981 default: 3982 rf_write = rtw_rf_hostwrite; 3983 break; 3984 case RTW_RFCHIPID_INTERSIL: 3985 case RTW_RFCHIPID_PHILIPS: 3986 case RTW_RFCHIPID_GCT: /* XXX a guess */ 3987 case RTW_RFCHIPID_RFMD: 3988 rf_write = (rtw_host_rfio) ? rtw_rf_hostwrite : rtw_rf_macwrite; 3989 break; 3990 } 3991 3992 switch (rfchipid) { 3993 case RTW_RFCHIPID_GCT: 3994 rf = rtw_grf5101_create(&sc->sc_regs, rf_write, 0); 3995 sc->sc_pwrstate_cb = rtw_maxim_pwrstate; 3996 break; 3997 case RTW_RFCHIPID_MAXIM: 3998 rf = rtw_max2820_create(&sc->sc_regs, rf_write, 0); 3999 sc->sc_pwrstate_cb = rtw_maxim_pwrstate; 4000 break; 4001 case RTW_RFCHIPID_PHILIPS: 4002 rf = rtw_sa2400_create(&sc->sc_regs, rf_write, digphy); 4003 sc->sc_pwrstate_cb = rtw_philips_pwrstate; 4004 break; 4005 case RTW_RFCHIPID_RFMD: 4006 /* XXX RFMD has no RF constructor */ 4007 sc->sc_pwrstate_cb = rtw_rfmd_pwrstate; 4008 /*FALLTHROUGH*/ 4009 default: 4010 return NULL; 4011 } 4012 rf->rf_continuous_tx_cb = 4013 (rtw_continuous_tx_cb_t)rtw_continuous_tx_enable; 4014 rf->rf_continuous_tx_arg = (void *)sc; 4015 return rf; 4016 } 4017 4018 /* Revision C and later use a different PHY delay setting than 4019 * revisions A and B. 4020 */ 4021 static uint8_t 4022 rtw_check_phydelay(struct rtw_regs *regs, uint32_t old_rcr) 4023 { 4024 #define REVAB (RTW_RCR_MXDMA_UNLIMITED | RTW_RCR_AICV) 4025 #define REVC (REVAB | RTW_RCR_RXFTH_WHOLE) 4026 4027 uint8_t phydelay = __SHIFTIN(0x6, RTW_PHYDELAY_PHYDELAY); 4028 4029 RTW_WRITE(regs, RTW_RCR, REVAB); 4030 RTW_WBW(regs, RTW_RCR, RTW_RCR); 4031 RTW_WRITE(regs, RTW_RCR, REVC); 4032 4033 RTW_WBR(regs, RTW_RCR, RTW_RCR); 4034 if ((RTW_READ(regs, RTW_RCR) & REVC) == REVC) 4035 phydelay |= RTW_PHYDELAY_REVC_MAGIC; 4036 4037 RTW_WRITE(regs, RTW_RCR, old_rcr); /* restore RCR */ 4038 RTW_SYNC(regs, RTW_RCR, RTW_RCR); 4039 4040 return phydelay; 4041 #undef REVC 4042 } 4043 4044 void 4045 rtw_attach(struct rtw_softc *sc) 4046 { 4047 struct ifnet *ifp = &sc->sc_if; 4048 struct ieee80211com *ic = &sc->sc_ic; 4049 struct rtw_txsoft_blk *tsb; 4050 int pri, rc; 4051 4052 pmf_self_suspensor_init(sc->sc_dev, &sc->sc_suspensor, &sc->sc_qual); 4053 4054 rtw_cipher_wep = ieee80211_cipher_wep; 4055 rtw_cipher_wep.ic_decap = rtw_wep_decap; 4056 4057 NEXT_ATTACH_STATE(sc, DETACHED); 4058 4059 sc->sc_soft_ih = softint_establish(SOFTINT_NET, rtw_softintr, sc); 4060 if (sc->sc_soft_ih == NULL) { 4061 aprint_error_dev(sc->sc_dev, "could not establish softint\n"); 4062 goto err; 4063 } 4064 4065 switch (RTW_READ(&sc->sc_regs, RTW_TCR) & RTW_TCR_HWVERID_MASK) { 4066 case RTW_TCR_HWVERID_F: 4067 sc->sc_hwverid = 'F'; 4068 break; 4069 case RTW_TCR_HWVERID_D: 4070 sc->sc_hwverid = 'D'; 4071 break; 4072 default: 4073 sc->sc_hwverid = '?'; 4074 break; 4075 } 4076 aprint_verbose_dev(sc->sc_dev, "hardware version %c\n", 4077 sc->sc_hwverid); 4078 4079 rc = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct rtw_descs), 4080 RTW_DESC_ALIGNMENT, 0, &sc->sc_desc_segs, 1, &sc->sc_desc_nsegs, 4081 0); 4082 4083 if (rc != 0) { 4084 aprint_error_dev(sc->sc_dev, 4085 "could not allocate hw descriptors, error %d\n", rc); 4086 goto err; 4087 } 4088 4089 NEXT_ATTACH_STATE(sc, FINISH_DESC_ALLOC); 4090 4091 rc = bus_dmamem_map(sc->sc_dmat, &sc->sc_desc_segs, 4092 sc->sc_desc_nsegs, sizeof(struct rtw_descs), 4093 (void **)&sc->sc_descs, BUS_DMA_COHERENT); 4094 4095 if (rc != 0) { 4096 aprint_error_dev(sc->sc_dev, 4097 "could not map hw descriptors, error %d\n", rc); 4098 goto err; 4099 } 4100 NEXT_ATTACH_STATE(sc, FINISH_DESC_MAP); 4101 4102 rc = bus_dmamap_create(sc->sc_dmat, sizeof(struct rtw_descs), 1, 4103 sizeof(struct rtw_descs), 0, 0, &sc->sc_desc_dmamap); 4104 4105 if (rc != 0) { 4106 aprint_error_dev(sc->sc_dev, 4107 "could not create DMA map for hw descriptors, error %d\n", 4108 rc); 4109 goto err; 4110 } 4111 NEXT_ATTACH_STATE(sc, FINISH_DESCMAP_CREATE); 4112 4113 sc->sc_rxdesc_blk.rdb_dmat = sc->sc_dmat; 4114 sc->sc_rxdesc_blk.rdb_dmamap = sc->sc_desc_dmamap; 4115 4116 for (pri = 0; pri < RTW_NTXPRI; pri++) { 4117 sc->sc_txdesc_blk[pri].tdb_dmat = sc->sc_dmat; 4118 sc->sc_txdesc_blk[pri].tdb_dmamap = sc->sc_desc_dmamap; 4119 } 4120 4121 rc = bus_dmamap_load(sc->sc_dmat, sc->sc_desc_dmamap, sc->sc_descs, 4122 sizeof(struct rtw_descs), NULL, 0); 4123 4124 if (rc != 0) { 4125 aprint_error_dev(sc->sc_dev, 4126 "could not load DMA map for hw descriptors, error %d\n", 4127 rc); 4128 goto err; 4129 } 4130 NEXT_ATTACH_STATE(sc, FINISH_DESCMAP_LOAD); 4131 4132 if (rtw_txsoft_blk_setup_all(sc) != 0) 4133 goto err; 4134 NEXT_ATTACH_STATE(sc, FINISH_TXCTLBLK_SETUP); 4135 4136 rtw_txdesc_blk_setup_all(sc); 4137 4138 NEXT_ATTACH_STATE(sc, FINISH_TXDESCBLK_SETUP); 4139 4140 sc->sc_rxdesc_blk.rdb_desc = &sc->sc_descs->hd_rx[0]; 4141 4142 for (pri = 0; pri < RTW_NTXPRI; pri++) { 4143 tsb = &sc->sc_txsoft_blk[pri]; 4144 4145 if ((rc = rtw_txdesc_dmamaps_create(sc->sc_dmat, 4146 &tsb->tsb_desc[0], tsb->tsb_ndesc)) != 0) { 4147 aprint_error_dev(sc->sc_dev, 4148 "could not load DMA map for hw tx descriptors, " 4149 "error %d\n", rc); 4150 goto err; 4151 } 4152 } 4153 4154 NEXT_ATTACH_STATE(sc, FINISH_TXMAPS_CREATE); 4155 if ((rc = rtw_rxdesc_dmamaps_create(sc->sc_dmat, &sc->sc_rxsoft[0], 4156 RTW_RXQLEN)) != 0) { 4157 aprint_error_dev(sc->sc_dev, 4158 "could not load DMA map for hw rx descriptors, error %d\n", 4159 rc); 4160 goto err; 4161 } 4162 NEXT_ATTACH_STATE(sc, FINISH_RXMAPS_CREATE); 4163 4164 /* Reset the chip to a known state. */ 4165 if (rtw_reset(sc) != 0) 4166 goto err; 4167 NEXT_ATTACH_STATE(sc, FINISH_RESET); 4168 4169 sc->sc_rcr = RTW_READ(&sc->sc_regs, RTW_RCR); 4170 4171 if ((sc->sc_rcr & RTW_RCR_9356SEL) != 0) 4172 sc->sc_flags |= RTW_F_9356SROM; 4173 4174 if (rtw_srom_read(&sc->sc_regs, sc->sc_flags, &sc->sc_srom, 4175 sc->sc_dev) != 0) 4176 goto err; 4177 4178 NEXT_ATTACH_STATE(sc, FINISH_READ_SROM); 4179 4180 if (rtw_srom_parse(&sc->sc_srom, &sc->sc_flags, &sc->sc_csthr, 4181 &sc->sc_rfchipid, &sc->sc_rcr, &sc->sc_locale, 4182 sc->sc_dev) != 0) { 4183 aprint_error_dev(sc->sc_dev, 4184 "attach failed, malformed serial ROM\n"); 4185 goto err; 4186 } 4187 4188 aprint_verbose_dev(sc->sc_dev, "%s PHY\n", 4189 ((sc->sc_flags & RTW_F_DIGPHY) != 0) ? "digital" : "analog"); 4190 4191 aprint_verbose_dev(sc->sc_dev, "carrier-sense threshold %u\n", 4192 sc->sc_csthr); 4193 4194 NEXT_ATTACH_STATE(sc, FINISH_PARSE_SROM); 4195 4196 sc->sc_rf = rtw_rf_attach(sc, sc->sc_rfchipid, 4197 sc->sc_flags & RTW_F_DIGPHY); 4198 4199 if (sc->sc_rf == NULL) { 4200 aprint_verbose_dev(sc->sc_dev, 4201 "attach failed, could not attach RF\n"); 4202 goto err; 4203 } 4204 4205 NEXT_ATTACH_STATE(sc, FINISH_RF_ATTACH); 4206 4207 sc->sc_phydelay = rtw_check_phydelay(&sc->sc_regs, sc->sc_rcr); 4208 4209 RTW_DPRINTF(RTW_DEBUG_ATTACH, 4210 ("%s: PHY delay %d\n", device_xname(sc->sc_dev), sc->sc_phydelay)); 4211 4212 if (sc->sc_locale == RTW_LOCALE_UNKNOWN) 4213 rtw_identify_country(&sc->sc_regs, &sc->sc_locale); 4214 4215 rtw_init_channels(sc->sc_locale, &sc->sc_ic.ic_channels, sc->sc_dev); 4216 4217 if (rtw_identify_sta(&sc->sc_regs, &sc->sc_ic.ic_myaddr, 4218 sc->sc_dev) != 0) 4219 goto err; 4220 NEXT_ATTACH_STATE(sc, FINISH_ID_STA); 4221 4222 rtw_setifprops(ifp, device_xname(sc->sc_dev), (void*)sc); 4223 4224 IFQ_SET_READY(&ifp->if_snd); 4225 4226 sc->sc_ic.ic_ifp = ifp; 4227 rtw_set80211props(&sc->sc_ic); 4228 4229 rtw_led_attach(&sc->sc_led_state, (void *)sc); 4230 NEXT_ATTACH_STATE(sc, FINISH_LED_ATTACH); 4231 4232 /* 4233 * Call MI attach routines. 4234 */ 4235 rc = if_initialize(ifp); 4236 if (rc != 0) { 4237 aprint_error_dev(sc->sc_dev, "if_initialize failed(%d)\n", rc); 4238 goto err; 4239 } 4240 ieee80211_ifattach(ic); 4241 /* Use common softint-based if_input */ 4242 ifp->if_percpuq = if_percpuq_create(ifp); 4243 if_register(ifp); 4244 4245 rtw_set80211methods(&sc->sc_mtbl, &sc->sc_ic); 4246 4247 /* possibly we should fill in our own sc_send_prresp, since 4248 * the RTL8180 is probably sending probe responses in ad hoc 4249 * mode. 4250 */ 4251 4252 /* complete initialization */ 4253 ieee80211_media_init(&sc->sc_ic, rtw_media_change, rtw_media_status); 4254 callout_init(&sc->sc_scan_ch, 0); 4255 4256 rtw_init_radiotap(sc); 4257 4258 bpf_attach2(ifp, DLT_IEEE802_11_RADIO, 4259 sizeof(struct ieee80211_frame) + 64, &sc->sc_radiobpf); 4260 4261 NEXT_ATTACH_STATE(sc, FINISHED); 4262 4263 ieee80211_announce(ic); 4264 return; 4265 err: 4266 rtw_detach(sc); 4267 return; 4268 } 4269 4270 int 4271 rtw_detach(struct rtw_softc *sc) 4272 { 4273 struct ifnet *ifp = &sc->sc_if; 4274 int pri, s; 4275 4276 s = splnet(); 4277 4278 switch (sc->sc_attach_state) { 4279 case FINISHED: 4280 rtw_stop(ifp, 1); 4281 4282 pmf_device_deregister(sc->sc_dev); 4283 callout_stop(&sc->sc_scan_ch); 4284 ieee80211_ifdetach(&sc->sc_ic); 4285 if_detach(ifp); 4286 /*FALLTHROUGH*/ 4287 case FINISH_LED_ATTACH: 4288 rtw_led_detach(&sc->sc_led_state); 4289 /*FALLTHROUGH*/ 4290 case FINISH_ID_STA: 4291 case FINISH_RF_ATTACH: 4292 rtw_rf_destroy(sc->sc_rf); 4293 sc->sc_rf = NULL; 4294 /*FALLTHROUGH*/ 4295 case FINISH_PARSE_SROM: 4296 case FINISH_READ_SROM: 4297 rtw_srom_free(&sc->sc_srom); 4298 /*FALLTHROUGH*/ 4299 case FINISH_RESET: 4300 case FINISH_RXMAPS_CREATE: 4301 rtw_rxdesc_dmamaps_destroy(sc->sc_dmat, &sc->sc_rxsoft[0], 4302 RTW_RXQLEN); 4303 /*FALLTHROUGH*/ 4304 case FINISH_TXMAPS_CREATE: 4305 for (pri = 0; pri < RTW_NTXPRI; pri++) { 4306 rtw_txdesc_dmamaps_destroy(sc->sc_dmat, 4307 sc->sc_txsoft_blk[pri].tsb_desc, 4308 sc->sc_txsoft_blk[pri].tsb_ndesc); 4309 } 4310 /*FALLTHROUGH*/ 4311 case FINISH_TXDESCBLK_SETUP: 4312 case FINISH_TXCTLBLK_SETUP: 4313 rtw_txsoft_blk_cleanup_all(sc); 4314 /*FALLTHROUGH*/ 4315 case FINISH_DESCMAP_LOAD: 4316 bus_dmamap_unload(sc->sc_dmat, sc->sc_desc_dmamap); 4317 /*FALLTHROUGH*/ 4318 case FINISH_DESCMAP_CREATE: 4319 bus_dmamap_destroy(sc->sc_dmat, sc->sc_desc_dmamap); 4320 /*FALLTHROUGH*/ 4321 case FINISH_DESC_MAP: 4322 bus_dmamem_unmap(sc->sc_dmat, (void *)sc->sc_descs, 4323 sizeof(struct rtw_descs)); 4324 /*FALLTHROUGH*/ 4325 case FINISH_DESC_ALLOC: 4326 bus_dmamem_free(sc->sc_dmat, &sc->sc_desc_segs, 4327 sc->sc_desc_nsegs); 4328 /*FALLTHROUGH*/ 4329 case DETACHED: 4330 if (sc->sc_soft_ih != NULL) { 4331 softint_disestablish(sc->sc_soft_ih); 4332 sc->sc_soft_ih = NULL; 4333 } 4334 NEXT_ATTACH_STATE(sc, DETACHED); 4335 break; 4336 } 4337 splx(s); 4338 return 0; 4339 } 4340
Indexes created Mon Sep 29 21:09:56 GMT 2025