1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __FBSDID("$FreeBSD$"); 22 23 /*- 24 * Ralink Technology RT2560 chipset driver 25 * http://www.ralinktech.com/ 26 */ 27 28 #include <sys/param.h> 29 #include <sys/sysctl.h> 30 #include <sys/sockio.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/endian.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 46 #include <net/bpf.h> 47 #include <net/if.h> 48 #include <net/if_var.h> 49 #include <net/if_arp.h> 50 #include <net/ethernet.h> 51 #include <net/if_dl.h> 52 #include <net/if_media.h> 53 #include <net/if_types.h> 54 55 #include <net80211/ieee80211_var.h> 56 #include <net80211/ieee80211_radiotap.h> 57 #include <net80211/ieee80211_regdomain.h> 58 #include <net80211/ieee80211_ratectl.h> 59 60 #include <netinet/in.h> 61 #include <netinet/in_systm.h> 62 #include <netinet/in_var.h> 63 #include <netinet/ip.h> 64 #include <netinet/if_ether.h> 65 66 #include <dev/ral/rt2560reg.h> 67 #include <dev/ral/rt2560var.h> 68 69 #define RT2560_RSSI(sc, rssi) \ 70 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 71 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 72 73 #define RAL_DEBUG 74 #ifdef RAL_DEBUG 75 #define DPRINTF(sc, fmt, ...) do { \ 76 if (sc->sc_debug > 0) \ 77 printf(fmt, __VA_ARGS__); \ 78 } while (0) 79 #define DPRINTFN(sc, n, fmt, ...) do { \ 80 if (sc->sc_debug >= (n)) \ 81 printf(fmt, __VA_ARGS__); \ 82 } while (0) 83 #else 84 #define DPRINTF(sc, fmt, ...) 85 #define DPRINTFN(sc, n, fmt, ...) 86 #endif 87 88 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 89 const char [IFNAMSIZ], int, enum ieee80211_opmode, 90 int, const uint8_t [IEEE80211_ADDR_LEN], 91 const uint8_t [IEEE80211_ADDR_LEN]); 92 static void rt2560_vap_delete(struct ieee80211vap *); 93 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 94 int); 95 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 96 struct rt2560_tx_ring *, int); 97 static void rt2560_reset_tx_ring(struct rt2560_softc *, 98 struct rt2560_tx_ring *); 99 static void rt2560_free_tx_ring(struct rt2560_softc *, 100 struct rt2560_tx_ring *); 101 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 102 struct rt2560_rx_ring *, int); 103 static void rt2560_reset_rx_ring(struct rt2560_softc *, 104 struct rt2560_rx_ring *); 105 static void rt2560_free_rx_ring(struct rt2560_softc *, 106 struct rt2560_rx_ring *); 107 static int rt2560_newstate(struct ieee80211vap *, 108 enum ieee80211_state, int); 109 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 110 static void rt2560_encryption_intr(struct rt2560_softc *); 111 static void rt2560_tx_intr(struct rt2560_softc *); 112 static void rt2560_prio_intr(struct rt2560_softc *); 113 static void rt2560_decryption_intr(struct rt2560_softc *); 114 static void rt2560_rx_intr(struct rt2560_softc *); 115 static void rt2560_beacon_update(struct ieee80211vap *, int item); 116 static void rt2560_beacon_expire(struct rt2560_softc *); 117 static void rt2560_wakeup_expire(struct rt2560_softc *); 118 static void rt2560_scan_start(struct ieee80211com *); 119 static void rt2560_scan_end(struct ieee80211com *); 120 static void rt2560_getradiocaps(struct ieee80211com *, int, int *, 121 struct ieee80211_channel[]); 122 static void rt2560_set_channel(struct ieee80211com *); 123 static void rt2560_setup_tx_desc(struct rt2560_softc *, 124 struct rt2560_tx_desc *, uint32_t, int, int, int, 125 bus_addr_t); 126 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 129 struct ieee80211_node *); 130 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 131 struct ieee80211_node *); 132 static int rt2560_transmit(struct ieee80211com *, struct mbuf *); 133 static void rt2560_start(struct rt2560_softc *); 134 static void rt2560_watchdog(void *); 135 static void rt2560_parent(struct ieee80211com *); 136 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 137 uint8_t); 138 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 139 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 140 uint32_t); 141 static void rt2560_set_chan(struct rt2560_softc *, 142 struct ieee80211_channel *); 143 #if 0 144 static void rt2560_disable_rf_tune(struct rt2560_softc *); 145 #endif 146 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 147 static void rt2560_enable_tsf(struct rt2560_softc *); 148 static void rt2560_update_plcp(struct rt2560_softc *); 149 static void rt2560_update_slot(struct ieee80211com *); 150 static void rt2560_set_basicrates(struct rt2560_softc *, 151 const struct ieee80211_rateset *); 152 static void rt2560_update_led(struct rt2560_softc *, int, int); 153 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 154 static void rt2560_set_macaddr(struct rt2560_softc *, 155 const uint8_t *); 156 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 157 static void rt2560_update_promisc(struct ieee80211com *); 158 static const char *rt2560_get_rf(int); 159 static void rt2560_read_config(struct rt2560_softc *); 160 static int rt2560_bbp_init(struct rt2560_softc *); 161 static void rt2560_set_txantenna(struct rt2560_softc *, int); 162 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 163 static void rt2560_init_locked(struct rt2560_softc *); 164 static void rt2560_init(void *); 165 static void rt2560_stop_locked(struct rt2560_softc *); 166 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 167 const struct ieee80211_bpf_params *); 168 169 static const struct { 170 uint32_t reg; 171 uint32_t val; 172 } rt2560_def_mac[] = { 173 RT2560_DEF_MAC 174 }; 175 176 static const struct { 177 uint8_t reg; 178 uint8_t val; 179 } rt2560_def_bbp[] = { 180 RT2560_DEF_BBP 181 }; 182 183 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 184 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 185 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 186 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 187 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 188 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 189 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 190 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 191 192 static const uint8_t rt2560_chan_2ghz[] = 193 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }; 194 195 static const uint8_t rt2560_chan_5ghz[] = 196 { 36, 40, 44, 48, 52, 56, 60, 64, 197 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 198 149, 153, 157, 161 }; 199 200 static const struct { 201 uint8_t chan; 202 uint32_t r1, r2, r4; 203 } rt2560_rf5222[] = { 204 RT2560_RF5222 205 }; 206 207 int 208 rt2560_attach(device_t dev, int id) 209 { 210 struct rt2560_softc *sc = device_get_softc(dev); 211 struct ieee80211com *ic = &sc->sc_ic; 212 int error; 213 214 sc->sc_dev = dev; 215 216 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 217 MTX_DEF | MTX_RECURSE); 218 219 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 220 mbufq_init(&sc->sc_snd, ifqmaxlen); 221 222 /* retrieve RT2560 rev. no */ 223 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 224 225 /* retrieve RF rev. no and various other things from EEPROM */ 226 rt2560_read_config(sc); 227 228 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 229 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 230 231 /* 232 * Allocate Tx and Rx rings. 233 */ 234 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 235 if (error != 0) { 236 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 237 goto fail1; 238 } 239 240 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 241 if (error != 0) { 242 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 243 goto fail2; 244 } 245 246 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 247 if (error != 0) { 248 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 249 goto fail3; 250 } 251 252 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 253 if (error != 0) { 254 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 255 goto fail4; 256 } 257 258 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 259 if (error != 0) { 260 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 261 goto fail5; 262 } 263 264 /* retrieve MAC address */ 265 rt2560_get_macaddr(sc, ic->ic_macaddr); 266 267 ic->ic_softc = sc; 268 ic->ic_name = device_get_nameunit(dev); 269 ic->ic_opmode = IEEE80211_M_STA; 270 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 271 272 /* set device capabilities */ 273 ic->ic_caps = 274 IEEE80211_C_STA /* station mode */ 275 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 276 | IEEE80211_C_HOSTAP /* hostap mode */ 277 | IEEE80211_C_MONITOR /* monitor mode */ 278 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 279 | IEEE80211_C_WDS /* 4-address traffic works */ 280 | IEEE80211_C_MBSS /* mesh point link mode */ 281 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 282 | IEEE80211_C_SHSLOT /* short slot time supported */ 283 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 284 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 285 #ifdef notyet 286 | IEEE80211_C_TXFRAG /* handle tx frags */ 287 #endif 288 ; 289 290 rt2560_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 291 ic->ic_channels); 292 293 ieee80211_ifattach(ic); 294 ic->ic_raw_xmit = rt2560_raw_xmit; 295 ic->ic_updateslot = rt2560_update_slot; 296 ic->ic_update_promisc = rt2560_update_promisc; 297 ic->ic_scan_start = rt2560_scan_start; 298 ic->ic_scan_end = rt2560_scan_end; 299 ic->ic_getradiocaps = rt2560_getradiocaps; 300 ic->ic_set_channel = rt2560_set_channel; 301 302 ic->ic_vap_create = rt2560_vap_create; 303 ic->ic_vap_delete = rt2560_vap_delete; 304 ic->ic_parent = rt2560_parent; 305 ic->ic_transmit = rt2560_transmit; 306 307 ieee80211_radiotap_attach(ic, 308 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 309 RT2560_TX_RADIOTAP_PRESENT, 310 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 311 RT2560_RX_RADIOTAP_PRESENT); 312 313 /* 314 * Add a few sysctl knobs. 315 */ 316 #ifdef RAL_DEBUG 317 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 318 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 319 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 320 #endif 321 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 322 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 323 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 324 325 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 326 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 327 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 328 329 if (bootverbose) 330 ieee80211_announce(ic); 331 332 return 0; 333 334 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 335 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 336 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 337 fail2: rt2560_free_tx_ring(sc, &sc->txq); 338 fail1: mtx_destroy(&sc->sc_mtx); 339 340 return ENXIO; 341 } 342 343 int 344 rt2560_detach(void *xsc) 345 { 346 struct rt2560_softc *sc = xsc; 347 struct ieee80211com *ic = &sc->sc_ic; 348 349 rt2560_stop(sc); 350 351 ieee80211_ifdetach(ic); 352 mbufq_drain(&sc->sc_snd); 353 354 rt2560_free_tx_ring(sc, &sc->txq); 355 rt2560_free_tx_ring(sc, &sc->atimq); 356 rt2560_free_tx_ring(sc, &sc->prioq); 357 rt2560_free_tx_ring(sc, &sc->bcnq); 358 rt2560_free_rx_ring(sc, &sc->rxq); 359 360 mtx_destroy(&sc->sc_mtx); 361 362 return 0; 363 } 364 365 static struct ieee80211vap * 366 rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 367 enum ieee80211_opmode opmode, int flags, 368 const uint8_t bssid[IEEE80211_ADDR_LEN], 369 const uint8_t mac[IEEE80211_ADDR_LEN]) 370 { 371 struct rt2560_softc *sc = ic->ic_softc; 372 struct rt2560_vap *rvp; 373 struct ieee80211vap *vap; 374 375 switch (opmode) { 376 case IEEE80211_M_STA: 377 case IEEE80211_M_IBSS: 378 case IEEE80211_M_AHDEMO: 379 case IEEE80211_M_MONITOR: 380 case IEEE80211_M_HOSTAP: 381 case IEEE80211_M_MBSS: 382 /* XXXRP: TBD */ 383 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 384 device_printf(sc->sc_dev, "only 1 vap supported\n"); 385 return NULL; 386 } 387 if (opmode == IEEE80211_M_STA) 388 flags |= IEEE80211_CLONE_NOBEACONS; 389 break; 390 case IEEE80211_M_WDS: 391 if (TAILQ_EMPTY(&ic->ic_vaps) || 392 ic->ic_opmode != IEEE80211_M_HOSTAP) { 393 device_printf(sc->sc_dev, 394 "wds only supported in ap mode\n"); 395 return NULL; 396 } 397 /* 398 * Silently remove any request for a unique 399 * bssid; WDS vap's always share the local 400 * mac address. 401 */ 402 flags &= ~IEEE80211_CLONE_BSSID; 403 break; 404 default: 405 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 406 return NULL; 407 } 408 rvp = malloc(sizeof(struct rt2560_vap), M_80211_VAP, M_WAITOK | M_ZERO); 409 vap = &rvp->ral_vap; 410 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 411 412 /* override state transition machine */ 413 rvp->ral_newstate = vap->iv_newstate; 414 vap->iv_newstate = rt2560_newstate; 415 vap->iv_update_beacon = rt2560_beacon_update; 416 417 ieee80211_ratectl_init(vap); 418 /* complete setup */ 419 ieee80211_vap_attach(vap, ieee80211_media_change, 420 ieee80211_media_status, mac); 421 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 422 ic->ic_opmode = opmode; 423 return vap; 424 } 425 426 static void 427 rt2560_vap_delete(struct ieee80211vap *vap) 428 { 429 struct rt2560_vap *rvp = RT2560_VAP(vap); 430 431 ieee80211_ratectl_deinit(vap); 432 ieee80211_vap_detach(vap); 433 free(rvp, M_80211_VAP); 434 } 435 436 void 437 rt2560_resume(void *xsc) 438 { 439 struct rt2560_softc *sc = xsc; 440 441 if (sc->sc_ic.ic_nrunning > 0) 442 rt2560_init(sc); 443 } 444 445 static void 446 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 447 { 448 if (error != 0) 449 return; 450 451 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 452 453 *(bus_addr_t *)arg = segs[0].ds_addr; 454 } 455 456 static int 457 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 458 int count) 459 { 460 int i, error; 461 462 ring->count = count; 463 ring->queued = 0; 464 ring->cur = ring->next = 0; 465 ring->cur_encrypt = ring->next_encrypt = 0; 466 467 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 468 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 469 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 470 0, NULL, NULL, &ring->desc_dmat); 471 if (error != 0) { 472 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 473 goto fail; 474 } 475 476 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 477 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 478 if (error != 0) { 479 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 480 goto fail; 481 } 482 483 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 484 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 485 0); 486 if (error != 0) { 487 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 488 goto fail; 489 } 490 491 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 492 M_NOWAIT | M_ZERO); 493 if (ring->data == NULL) { 494 device_printf(sc->sc_dev, "could not allocate soft data\n"); 495 error = ENOMEM; 496 goto fail; 497 } 498 499 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 500 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 501 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 502 &ring->data_dmat); 503 if (error != 0) { 504 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 505 goto fail; 506 } 507 508 for (i = 0; i < count; i++) { 509 error = bus_dmamap_create(ring->data_dmat, 0, 510 &ring->data[i].map); 511 if (error != 0) { 512 device_printf(sc->sc_dev, "could not create DMA map\n"); 513 goto fail; 514 } 515 } 516 517 return 0; 518 519 fail: rt2560_free_tx_ring(sc, ring); 520 return error; 521 } 522 523 static void 524 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 525 { 526 struct rt2560_tx_desc *desc; 527 struct rt2560_tx_data *data; 528 int i; 529 530 for (i = 0; i < ring->count; i++) { 531 desc = &ring->desc[i]; 532 data = &ring->data[i]; 533 534 if (data->m != NULL) { 535 bus_dmamap_sync(ring->data_dmat, data->map, 536 BUS_DMASYNC_POSTWRITE); 537 bus_dmamap_unload(ring->data_dmat, data->map); 538 m_freem(data->m); 539 data->m = NULL; 540 } 541 542 if (data->ni != NULL) { 543 ieee80211_free_node(data->ni); 544 data->ni = NULL; 545 } 546 547 desc->flags = 0; 548 } 549 550 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 551 552 ring->queued = 0; 553 ring->cur = ring->next = 0; 554 ring->cur_encrypt = ring->next_encrypt = 0; 555 } 556 557 static void 558 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 559 { 560 struct rt2560_tx_data *data; 561 int i; 562 563 if (ring->desc != NULL) { 564 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 565 BUS_DMASYNC_POSTWRITE); 566 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 567 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 568 } 569 570 if (ring->desc_dmat != NULL) 571 bus_dma_tag_destroy(ring->desc_dmat); 572 573 if (ring->data != NULL) { 574 for (i = 0; i < ring->count; i++) { 575 data = &ring->data[i]; 576 577 if (data->m != NULL) { 578 bus_dmamap_sync(ring->data_dmat, data->map, 579 BUS_DMASYNC_POSTWRITE); 580 bus_dmamap_unload(ring->data_dmat, data->map); 581 m_freem(data->m); 582 } 583 584 if (data->ni != NULL) 585 ieee80211_free_node(data->ni); 586 587 if (data->map != NULL) 588 bus_dmamap_destroy(ring->data_dmat, data->map); 589 } 590 591 free(ring->data, M_DEVBUF); 592 } 593 594 if (ring->data_dmat != NULL) 595 bus_dma_tag_destroy(ring->data_dmat); 596 } 597 598 static int 599 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 600 int count) 601 { 602 struct rt2560_rx_desc *desc; 603 struct rt2560_rx_data *data; 604 bus_addr_t physaddr; 605 int i, error; 606 607 ring->count = count; 608 ring->cur = ring->next = 0; 609 ring->cur_decrypt = 0; 610 611 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 612 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 613 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 614 0, NULL, NULL, &ring->desc_dmat); 615 if (error != 0) { 616 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 617 goto fail; 618 } 619 620 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 621 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 622 if (error != 0) { 623 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 624 goto fail; 625 } 626 627 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 628 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 629 0); 630 if (error != 0) { 631 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 632 goto fail; 633 } 634 635 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 636 M_NOWAIT | M_ZERO); 637 if (ring->data == NULL) { 638 device_printf(sc->sc_dev, "could not allocate soft data\n"); 639 error = ENOMEM; 640 goto fail; 641 } 642 643 /* 644 * Pre-allocate Rx buffers and populate Rx ring. 645 */ 646 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 647 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 648 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 649 if (error != 0) { 650 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 651 goto fail; 652 } 653 654 for (i = 0; i < count; i++) { 655 desc = &sc->rxq.desc[i]; 656 data = &sc->rxq.data[i]; 657 658 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 659 if (error != 0) { 660 device_printf(sc->sc_dev, "could not create DMA map\n"); 661 goto fail; 662 } 663 664 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 665 if (data->m == NULL) { 666 device_printf(sc->sc_dev, 667 "could not allocate rx mbuf\n"); 668 error = ENOMEM; 669 goto fail; 670 } 671 672 error = bus_dmamap_load(ring->data_dmat, data->map, 673 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 674 &physaddr, 0); 675 if (error != 0) { 676 device_printf(sc->sc_dev, 677 "could not load rx buf DMA map"); 678 goto fail; 679 } 680 681 desc->flags = htole32(RT2560_RX_BUSY); 682 desc->physaddr = htole32(physaddr); 683 } 684 685 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 686 687 return 0; 688 689 fail: rt2560_free_rx_ring(sc, ring); 690 return error; 691 } 692 693 static void 694 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 695 { 696 int i; 697 698 for (i = 0; i < ring->count; i++) { 699 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 700 ring->data[i].drop = 0; 701 } 702 703 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 704 705 ring->cur = ring->next = 0; 706 ring->cur_decrypt = 0; 707 } 708 709 static void 710 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 711 { 712 struct rt2560_rx_data *data; 713 int i; 714 715 if (ring->desc != NULL) { 716 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 717 BUS_DMASYNC_POSTWRITE); 718 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 719 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 720 } 721 722 if (ring->desc_dmat != NULL) 723 bus_dma_tag_destroy(ring->desc_dmat); 724 725 if (ring->data != NULL) { 726 for (i = 0; i < ring->count; i++) { 727 data = &ring->data[i]; 728 729 if (data->m != NULL) { 730 bus_dmamap_sync(ring->data_dmat, data->map, 731 BUS_DMASYNC_POSTREAD); 732 bus_dmamap_unload(ring->data_dmat, data->map); 733 m_freem(data->m); 734 } 735 736 if (data->map != NULL) 737 bus_dmamap_destroy(ring->data_dmat, data->map); 738 } 739 740 free(ring->data, M_DEVBUF); 741 } 742 743 if (ring->data_dmat != NULL) 744 bus_dma_tag_destroy(ring->data_dmat); 745 } 746 747 static int 748 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 749 { 750 struct rt2560_vap *rvp = RT2560_VAP(vap); 751 struct rt2560_softc *sc = vap->iv_ic->ic_softc; 752 int error; 753 754 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 755 /* abort TSF synchronization */ 756 RAL_WRITE(sc, RT2560_CSR14, 0); 757 758 /* turn association led off */ 759 rt2560_update_led(sc, 0, 0); 760 } 761 762 error = rvp->ral_newstate(vap, nstate, arg); 763 764 if (error == 0 && nstate == IEEE80211_S_RUN) { 765 struct ieee80211_node *ni = vap->iv_bss; 766 struct mbuf *m; 767 768 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 769 rt2560_update_plcp(sc); 770 rt2560_set_basicrates(sc, &ni->ni_rates); 771 rt2560_set_bssid(sc, ni->ni_bssid); 772 } 773 774 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 775 vap->iv_opmode == IEEE80211_M_IBSS || 776 vap->iv_opmode == IEEE80211_M_MBSS) { 777 m = ieee80211_beacon_alloc(ni); 778 if (m == NULL) { 779 device_printf(sc->sc_dev, 780 "could not allocate beacon\n"); 781 return ENOBUFS; 782 } 783 ieee80211_ref_node(ni); 784 error = rt2560_tx_bcn(sc, m, ni); 785 if (error != 0) 786 return error; 787 } 788 789 /* turn association led on */ 790 rt2560_update_led(sc, 1, 0); 791 792 if (vap->iv_opmode != IEEE80211_M_MONITOR) 793 rt2560_enable_tsf_sync(sc); 794 else 795 rt2560_enable_tsf(sc); 796 } 797 return error; 798 } 799 800 /* 801 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 802 * 93C66). 803 */ 804 static uint16_t 805 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 806 { 807 uint32_t tmp; 808 uint16_t val; 809 int n; 810 811 /* clock C once before the first command */ 812 RT2560_EEPROM_CTL(sc, 0); 813 814 RT2560_EEPROM_CTL(sc, RT2560_S); 815 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 816 RT2560_EEPROM_CTL(sc, RT2560_S); 817 818 /* write start bit (1) */ 819 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 820 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 821 822 /* write READ opcode (10) */ 823 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 824 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 825 RT2560_EEPROM_CTL(sc, RT2560_S); 826 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 827 828 /* write address (A5-A0 or A7-A0) */ 829 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 830 for (; n >= 0; n--) { 831 RT2560_EEPROM_CTL(sc, RT2560_S | 832 (((addr >> n) & 1) << RT2560_SHIFT_D)); 833 RT2560_EEPROM_CTL(sc, RT2560_S | 834 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 835 } 836 837 RT2560_EEPROM_CTL(sc, RT2560_S); 838 839 /* read data Q15-Q0 */ 840 val = 0; 841 for (n = 15; n >= 0; n--) { 842 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 843 tmp = RAL_READ(sc, RT2560_CSR21); 844 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 845 RT2560_EEPROM_CTL(sc, RT2560_S); 846 } 847 848 RT2560_EEPROM_CTL(sc, 0); 849 850 /* clear Chip Select and clock C */ 851 RT2560_EEPROM_CTL(sc, RT2560_S); 852 RT2560_EEPROM_CTL(sc, 0); 853 RT2560_EEPROM_CTL(sc, RT2560_C); 854 855 return val; 856 } 857 858 /* 859 * Some frames were processed by the hardware cipher engine and are ready for 860 * transmission. 861 */ 862 static void 863 rt2560_encryption_intr(struct rt2560_softc *sc) 864 { 865 struct rt2560_tx_desc *desc; 866 int hw; 867 868 /* retrieve last descriptor index processed by cipher engine */ 869 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 870 hw /= RT2560_TX_DESC_SIZE; 871 872 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 873 BUS_DMASYNC_POSTREAD); 874 875 while (sc->txq.next_encrypt != hw) { 876 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 877 printf("hw encrypt %d, cur_encrypt %d\n", hw, 878 sc->txq.cur_encrypt); 879 break; 880 } 881 882 desc = &sc->txq.desc[sc->txq.next_encrypt]; 883 884 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 885 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 886 break; 887 888 /* for TKIP, swap eiv field to fix a bug in ASIC */ 889 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 890 RT2560_TX_CIPHER_TKIP) 891 desc->eiv = bswap32(desc->eiv); 892 893 /* mark the frame ready for transmission */ 894 desc->flags |= htole32(RT2560_TX_VALID); 895 desc->flags |= htole32(RT2560_TX_BUSY); 896 897 DPRINTFN(sc, 15, "encryption done idx=%u\n", 898 sc->txq.next_encrypt); 899 900 sc->txq.next_encrypt = 901 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 902 } 903 904 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 905 BUS_DMASYNC_PREWRITE); 906 907 /* kick Tx */ 908 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 909 } 910 911 static void 912 rt2560_tx_intr(struct rt2560_softc *sc) 913 { 914 struct ieee80211_ratectl_tx_status *txs = &sc->sc_txs; 915 struct rt2560_tx_desc *desc; 916 struct rt2560_tx_data *data; 917 struct mbuf *m; 918 struct ieee80211_node *ni; 919 uint32_t flags; 920 int status; 921 922 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 923 BUS_DMASYNC_POSTREAD); 924 925 txs->flags = IEEE80211_RATECTL_STATUS_LONG_RETRY; 926 for (;;) { 927 desc = &sc->txq.desc[sc->txq.next]; 928 data = &sc->txq.data[sc->txq.next]; 929 930 flags = le32toh(desc->flags); 931 if ((flags & RT2560_TX_BUSY) || 932 (flags & RT2560_TX_CIPHER_BUSY) || 933 !(flags & RT2560_TX_VALID)) 934 break; 935 936 m = data->m; 937 ni = data->ni; 938 939 switch (flags & RT2560_TX_RESULT_MASK) { 940 case RT2560_TX_SUCCESS: 941 txs->status = IEEE80211_RATECTL_TX_SUCCESS; 942 txs->long_retries = 0; 943 944 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 945 if (data->rix != IEEE80211_FIXED_RATE_NONE) 946 ieee80211_ratectl_tx_complete(ni, txs); 947 status = 0; 948 break; 949 950 case RT2560_TX_SUCCESS_RETRY: 951 txs->status = IEEE80211_RATECTL_TX_SUCCESS; 952 txs->long_retries = RT2560_TX_RETRYCNT(flags); 953 954 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 955 txs->long_retries); 956 if (data->rix != IEEE80211_FIXED_RATE_NONE) 957 ieee80211_ratectl_tx_complete(ni, txs); 958 status = 0; 959 break; 960 961 case RT2560_TX_FAIL_RETRY: 962 txs->status = IEEE80211_RATECTL_TX_FAIL_LONG; 963 txs->long_retries = RT2560_TX_RETRYCNT(flags); 964 965 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 966 txs->long_retries); 967 if (data->rix != IEEE80211_FIXED_RATE_NONE) 968 ieee80211_ratectl_tx_complete(ni, txs); 969 status = 1; 970 break; 971 972 case RT2560_TX_FAIL_INVALID: 973 case RT2560_TX_FAIL_OTHER: 974 default: 975 device_printf(sc->sc_dev, "sending data frame failed " 976 "0x%08x\n", flags); 977 status = 1; 978 } 979 980 bus_dmamap_sync(sc->txq.data_dmat, data->map, 981 BUS_DMASYNC_POSTWRITE); 982 bus_dmamap_unload(sc->txq.data_dmat, data->map); 983 984 ieee80211_tx_complete(ni, m, status); 985 data->ni = NULL; 986 data->m = NULL; 987 988 /* descriptor is no longer valid */ 989 desc->flags &= ~htole32(RT2560_TX_VALID); 990 991 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 992 993 sc->txq.queued--; 994 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 995 } 996 997 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 998 BUS_DMASYNC_PREWRITE); 999 1000 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1001 sc->sc_tx_timer = 0; 1002 1003 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) 1004 rt2560_start(sc); 1005 } 1006 1007 static void 1008 rt2560_prio_intr(struct rt2560_softc *sc) 1009 { 1010 struct rt2560_tx_desc *desc; 1011 struct rt2560_tx_data *data; 1012 struct ieee80211_node *ni; 1013 struct mbuf *m; 1014 int flags; 1015 1016 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1017 BUS_DMASYNC_POSTREAD); 1018 1019 for (;;) { 1020 desc = &sc->prioq.desc[sc->prioq.next]; 1021 data = &sc->prioq.data[sc->prioq.next]; 1022 1023 flags = le32toh(desc->flags); 1024 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1025 break; 1026 1027 switch (flags & RT2560_TX_RESULT_MASK) { 1028 case RT2560_TX_SUCCESS: 1029 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1030 break; 1031 1032 case RT2560_TX_SUCCESS_RETRY: 1033 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1034 (flags >> 5) & 0x7); 1035 break; 1036 1037 case RT2560_TX_FAIL_RETRY: 1038 DPRINTFN(sc, 9, "%s\n", 1039 "sending mgt frame failed (too much retries)"); 1040 break; 1041 1042 case RT2560_TX_FAIL_INVALID: 1043 case RT2560_TX_FAIL_OTHER: 1044 default: 1045 device_printf(sc->sc_dev, "sending mgt frame failed " 1046 "0x%08x\n", flags); 1047 break; 1048 } 1049 1050 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1051 BUS_DMASYNC_POSTWRITE); 1052 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1053 1054 m = data->m; 1055 data->m = NULL; 1056 ni = data->ni; 1057 data->ni = NULL; 1058 1059 /* descriptor is no longer valid */ 1060 desc->flags &= ~htole32(RT2560_TX_VALID); 1061 1062 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1063 1064 sc->prioq.queued--; 1065 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1066 1067 if (m->m_flags & M_TXCB) 1068 ieee80211_process_callback(ni, m, 1069 (flags & RT2560_TX_RESULT_MASK) &~ 1070 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1071 m_freem(m); 1072 ieee80211_free_node(ni); 1073 } 1074 1075 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1076 BUS_DMASYNC_PREWRITE); 1077 1078 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1079 sc->sc_tx_timer = 0; 1080 1081 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) 1082 rt2560_start(sc); 1083 } 1084 1085 /* 1086 * Some frames were processed by the hardware cipher engine and are ready for 1087 * handoff to the IEEE802.11 layer. 1088 */ 1089 static void 1090 rt2560_decryption_intr(struct rt2560_softc *sc) 1091 { 1092 struct ieee80211com *ic = &sc->sc_ic; 1093 struct rt2560_rx_desc *desc; 1094 struct rt2560_rx_data *data; 1095 bus_addr_t physaddr; 1096 struct ieee80211_frame *wh; 1097 struct ieee80211_node *ni; 1098 struct mbuf *mnew, *m; 1099 int hw, error; 1100 int8_t rssi, nf; 1101 1102 /* retrieve last descriptor index processed by cipher engine */ 1103 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1104 hw /= RT2560_RX_DESC_SIZE; 1105 1106 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1107 BUS_DMASYNC_POSTREAD); 1108 1109 for (; sc->rxq.cur_decrypt != hw;) { 1110 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1111 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1112 1113 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1114 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1115 break; 1116 1117 if (data->drop) { 1118 counter_u64_add(ic->ic_ierrors, 1); 1119 goto skip; 1120 } 1121 1122 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1123 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1124 counter_u64_add(ic->ic_ierrors, 1); 1125 goto skip; 1126 } 1127 1128 /* 1129 * Try to allocate a new mbuf for this ring element and load it 1130 * before processing the current mbuf. If the ring element 1131 * cannot be loaded, drop the received packet and reuse the old 1132 * mbuf. In the unlikely case that the old mbuf can't be 1133 * reloaded either, explicitly panic. 1134 */ 1135 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1136 if (mnew == NULL) { 1137 counter_u64_add(ic->ic_ierrors, 1); 1138 goto skip; 1139 } 1140 1141 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1142 BUS_DMASYNC_POSTREAD); 1143 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1144 1145 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1146 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1147 &physaddr, 0); 1148 if (error != 0) { 1149 m_freem(mnew); 1150 1151 /* try to reload the old mbuf */ 1152 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1153 mtod(data->m, void *), MCLBYTES, 1154 rt2560_dma_map_addr, &physaddr, 0); 1155 if (error != 0) { 1156 /* very unlikely that it will fail... */ 1157 panic("%s: could not load old rx mbuf", 1158 device_get_name(sc->sc_dev)); 1159 } 1160 counter_u64_add(ic->ic_ierrors, 1); 1161 goto skip; 1162 } 1163 1164 /* 1165 * New mbuf successfully loaded, update Rx ring and continue 1166 * processing. 1167 */ 1168 m = data->m; 1169 data->m = mnew; 1170 desc->physaddr = htole32(physaddr); 1171 1172 /* finalize mbuf */ 1173 m->m_pkthdr.len = m->m_len = 1174 (le32toh(desc->flags) >> 16) & 0xfff; 1175 1176 rssi = RT2560_RSSI(sc, desc->rssi); 1177 nf = RT2560_NOISE_FLOOR; 1178 if (ieee80211_radiotap_active(ic)) { 1179 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1180 uint32_t tsf_lo, tsf_hi; 1181 1182 /* get timestamp (low and high 32 bits) */ 1183 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1184 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1185 1186 tap->wr_tsf = 1187 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1188 tap->wr_flags = 0; 1189 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1190 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1191 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1192 tap->wr_antenna = sc->rx_ant; 1193 tap->wr_antsignal = nf + rssi; 1194 tap->wr_antnoise = nf; 1195 } 1196 1197 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1198 RAL_UNLOCK(sc); 1199 wh = mtod(m, struct ieee80211_frame *); 1200 ni = ieee80211_find_rxnode(ic, 1201 (struct ieee80211_frame_min *)wh); 1202 if (ni != NULL) { 1203 (void) ieee80211_input(ni, m, rssi, nf); 1204 ieee80211_free_node(ni); 1205 } else 1206 (void) ieee80211_input_all(ic, m, rssi, nf); 1207 1208 RAL_LOCK(sc); 1209 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1210 skip: desc->flags = htole32(RT2560_RX_BUSY); 1211 1212 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1213 1214 sc->rxq.cur_decrypt = 1215 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1216 } 1217 1218 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1219 BUS_DMASYNC_PREWRITE); 1220 } 1221 1222 /* 1223 * Some frames were received. Pass them to the hardware cipher engine before 1224 * sending them to the 802.11 layer. 1225 */ 1226 static void 1227 rt2560_rx_intr(struct rt2560_softc *sc) 1228 { 1229 struct rt2560_rx_desc *desc; 1230 struct rt2560_rx_data *data; 1231 1232 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1233 BUS_DMASYNC_POSTREAD); 1234 1235 for (;;) { 1236 desc = &sc->rxq.desc[sc->rxq.cur]; 1237 data = &sc->rxq.data[sc->rxq.cur]; 1238 1239 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1240 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1241 break; 1242 1243 data->drop = 0; 1244 1245 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1246 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1247 /* 1248 * This should not happen since we did not request 1249 * to receive those frames when we filled RXCSR0. 1250 */ 1251 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1252 le32toh(desc->flags)); 1253 data->drop = 1; 1254 } 1255 1256 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1257 DPRINTFN(sc, 5, "%s\n", "bad length"); 1258 data->drop = 1; 1259 } 1260 1261 /* mark the frame for decryption */ 1262 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1263 1264 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1265 1266 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1267 } 1268 1269 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1270 BUS_DMASYNC_PREWRITE); 1271 1272 /* kick decrypt */ 1273 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1274 } 1275 1276 static void 1277 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1278 { 1279 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 1280 1281 setbit(bo->bo_flags, item); 1282 } 1283 1284 /* 1285 * This function is called periodically in IBSS mode when a new beacon must be 1286 * sent out. 1287 */ 1288 static void 1289 rt2560_beacon_expire(struct rt2560_softc *sc) 1290 { 1291 struct ieee80211com *ic = &sc->sc_ic; 1292 struct rt2560_tx_data *data; 1293 1294 if (ic->ic_opmode != IEEE80211_M_IBSS && 1295 ic->ic_opmode != IEEE80211_M_HOSTAP && 1296 ic->ic_opmode != IEEE80211_M_MBSS) 1297 return; 1298 1299 data = &sc->bcnq.data[sc->bcnq.next]; 1300 /* 1301 * Don't send beacon if bsschan isn't set 1302 */ 1303 if (data->ni == NULL) 1304 return; 1305 1306 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1307 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1308 1309 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1310 ieee80211_beacon_update(data->ni, data->m, 1); 1311 1312 rt2560_tx_bcn(sc, data->m, data->ni); 1313 1314 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1315 1316 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1317 } 1318 1319 /* ARGSUSED */ 1320 static void 1321 rt2560_wakeup_expire(struct rt2560_softc *sc) 1322 { 1323 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1324 } 1325 1326 void 1327 rt2560_intr(void *arg) 1328 { 1329 struct rt2560_softc *sc = arg; 1330 uint32_t r; 1331 1332 RAL_LOCK(sc); 1333 1334 /* disable interrupts */ 1335 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1336 1337 /* don't re-enable interrupts if we're shutting down */ 1338 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 1339 RAL_UNLOCK(sc); 1340 return; 1341 } 1342 1343 r = RAL_READ(sc, RT2560_CSR7); 1344 RAL_WRITE(sc, RT2560_CSR7, r); 1345 1346 if (r & RT2560_BEACON_EXPIRE) 1347 rt2560_beacon_expire(sc); 1348 1349 if (r & RT2560_WAKEUP_EXPIRE) 1350 rt2560_wakeup_expire(sc); 1351 1352 if (r & RT2560_ENCRYPTION_DONE) 1353 rt2560_encryption_intr(sc); 1354 1355 if (r & RT2560_TX_DONE) 1356 rt2560_tx_intr(sc); 1357 1358 if (r & RT2560_PRIO_DONE) 1359 rt2560_prio_intr(sc); 1360 1361 if (r & RT2560_DECRYPTION_DONE) 1362 rt2560_decryption_intr(sc); 1363 1364 if (r & RT2560_RX_DONE) { 1365 rt2560_rx_intr(sc); 1366 rt2560_encryption_intr(sc); 1367 } 1368 1369 /* re-enable interrupts */ 1370 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1371 1372 RAL_UNLOCK(sc); 1373 } 1374 1375 #define RAL_SIFS 10 /* us */ 1376 1377 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1378 1379 static uint8_t 1380 rt2560_plcp_signal(int rate) 1381 { 1382 switch (rate) { 1383 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1384 case 12: return 0xb; 1385 case 18: return 0xf; 1386 case 24: return 0xa; 1387 case 36: return 0xe; 1388 case 48: return 0x9; 1389 case 72: return 0xd; 1390 case 96: return 0x8; 1391 case 108: return 0xc; 1392 1393 /* CCK rates (NB: not IEEE std, device-specific) */ 1394 case 2: return 0x0; 1395 case 4: return 0x1; 1396 case 11: return 0x2; 1397 case 22: return 0x3; 1398 } 1399 return 0xff; /* XXX unsupported/unknown rate */ 1400 } 1401 1402 static void 1403 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1404 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1405 { 1406 struct ieee80211com *ic = &sc->sc_ic; 1407 uint16_t plcp_length; 1408 int remainder; 1409 1410 desc->flags = htole32(flags); 1411 desc->flags |= htole32(len << 16); 1412 1413 desc->physaddr = htole32(physaddr); 1414 desc->wme = htole16( 1415 RT2560_AIFSN(2) | 1416 RT2560_LOGCWMIN(3) | 1417 RT2560_LOGCWMAX(8)); 1418 1419 /* setup PLCP fields */ 1420 desc->plcp_signal = rt2560_plcp_signal(rate); 1421 desc->plcp_service = 4; 1422 1423 len += IEEE80211_CRC_LEN; 1424 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1425 desc->flags |= htole32(RT2560_TX_OFDM); 1426 1427 plcp_length = len & 0xfff; 1428 desc->plcp_length_hi = plcp_length >> 6; 1429 desc->plcp_length_lo = plcp_length & 0x3f; 1430 } else { 1431 plcp_length = howmany(16 * len, rate); 1432 if (rate == 22) { 1433 remainder = (16 * len) % 22; 1434 if (remainder != 0 && remainder < 7) 1435 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1436 } 1437 desc->plcp_length_hi = plcp_length >> 8; 1438 desc->plcp_length_lo = plcp_length & 0xff; 1439 1440 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1441 desc->plcp_signal |= 0x08; 1442 } 1443 1444 if (!encrypt) 1445 desc->flags |= htole32(RT2560_TX_VALID); 1446 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1447 : htole32(RT2560_TX_BUSY); 1448 } 1449 1450 static int 1451 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1452 struct ieee80211_node *ni) 1453 { 1454 struct ieee80211vap *vap = ni->ni_vap; 1455 struct rt2560_tx_desc *desc; 1456 struct rt2560_tx_data *data; 1457 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1458 int nsegs, rate, error; 1459 1460 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1461 data = &sc->bcnq.data[sc->bcnq.cur]; 1462 1463 /* XXX maybe a separate beacon rate? */ 1464 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1465 1466 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1467 segs, &nsegs, BUS_DMA_NOWAIT); 1468 if (error != 0) { 1469 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1470 error); 1471 m_freem(m0); 1472 return error; 1473 } 1474 1475 if (ieee80211_radiotap_active_vap(vap)) { 1476 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1477 1478 tap->wt_flags = 0; 1479 tap->wt_rate = rate; 1480 tap->wt_antenna = sc->tx_ant; 1481 1482 ieee80211_radiotap_tx(vap, m0); 1483 } 1484 1485 data->m = m0; 1486 data->ni = ni; 1487 1488 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1489 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1490 1491 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1492 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1493 1494 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1495 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1496 BUS_DMASYNC_PREWRITE); 1497 1498 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1499 1500 return 0; 1501 } 1502 1503 static int 1504 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1505 struct ieee80211_node *ni) 1506 { 1507 struct ieee80211vap *vap = ni->ni_vap; 1508 struct ieee80211com *ic = ni->ni_ic; 1509 struct rt2560_tx_desc *desc; 1510 struct rt2560_tx_data *data; 1511 struct ieee80211_frame *wh; 1512 struct ieee80211_key *k; 1513 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1514 uint16_t dur; 1515 uint32_t flags = 0; 1516 int nsegs, rate, error; 1517 1518 desc = &sc->prioq.desc[sc->prioq.cur]; 1519 data = &sc->prioq.data[sc->prioq.cur]; 1520 1521 rate = ni->ni_txparms->mgmtrate; 1522 1523 wh = mtod(m0, struct ieee80211_frame *); 1524 1525 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1526 k = ieee80211_crypto_encap(ni, m0); 1527 if (k == NULL) { 1528 m_freem(m0); 1529 return ENOBUFS; 1530 } 1531 } 1532 1533 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1534 segs, &nsegs, 0); 1535 if (error != 0) { 1536 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1537 error); 1538 m_freem(m0); 1539 return error; 1540 } 1541 1542 if (ieee80211_radiotap_active_vap(vap)) { 1543 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1544 1545 tap->wt_flags = 0; 1546 tap->wt_rate = rate; 1547 tap->wt_antenna = sc->tx_ant; 1548 1549 ieee80211_radiotap_tx(vap, m0); 1550 } 1551 1552 data->m = m0; 1553 data->ni = ni; 1554 /* management frames are not taken into account for amrr */ 1555 data->rix = IEEE80211_FIXED_RATE_NONE; 1556 1557 wh = mtod(m0, struct ieee80211_frame *); 1558 1559 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1560 flags |= RT2560_TX_ACK; 1561 1562 dur = ieee80211_ack_duration(ic->ic_rt, 1563 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1564 *(uint16_t *)wh->i_dur = htole16(dur); 1565 1566 /* tell hardware to add timestamp for probe responses */ 1567 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1568 IEEE80211_FC0_TYPE_MGT && 1569 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1570 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1571 flags |= RT2560_TX_TIMESTAMP; 1572 } 1573 1574 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1575 segs->ds_addr); 1576 1577 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1578 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1579 BUS_DMASYNC_PREWRITE); 1580 1581 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1582 m0->m_pkthdr.len, sc->prioq.cur, rate); 1583 1584 /* kick prio */ 1585 sc->prioq.queued++; 1586 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1587 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1588 1589 return 0; 1590 } 1591 1592 static int 1593 rt2560_sendprot(struct rt2560_softc *sc, 1594 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1595 { 1596 struct ieee80211com *ic = ni->ni_ic; 1597 const struct ieee80211_frame *wh; 1598 struct rt2560_tx_desc *desc; 1599 struct rt2560_tx_data *data; 1600 struct mbuf *mprot; 1601 int protrate, ackrate, pktlen, flags, isshort, error; 1602 uint16_t dur; 1603 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1604 int nsegs; 1605 1606 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1607 ("protection %d", prot)); 1608 1609 wh = mtod(m, const struct ieee80211_frame *); 1610 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1611 1612 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1613 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1614 1615 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1616 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1617 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1618 flags = RT2560_TX_MORE_FRAG; 1619 if (prot == IEEE80211_PROT_RTSCTS) { 1620 /* NB: CTS is the same size as an ACK */ 1621 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1622 flags |= RT2560_TX_ACK; 1623 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1624 } else { 1625 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1626 } 1627 if (mprot == NULL) { 1628 /* XXX stat + msg */ 1629 return ENOBUFS; 1630 } 1631 1632 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1633 data = &sc->txq.data[sc->txq.cur_encrypt]; 1634 1635 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1636 mprot, segs, &nsegs, 0); 1637 if (error != 0) { 1638 device_printf(sc->sc_dev, 1639 "could not map mbuf (error %d)\n", error); 1640 m_freem(mprot); 1641 return error; 1642 } 1643 1644 data->m = mprot; 1645 data->ni = ieee80211_ref_node(ni); 1646 /* ctl frames are not taken into account for amrr */ 1647 data->rix = IEEE80211_FIXED_RATE_NONE; 1648 1649 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1650 segs->ds_addr); 1651 1652 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1653 BUS_DMASYNC_PREWRITE); 1654 1655 sc->txq.queued++; 1656 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1657 1658 return 0; 1659 } 1660 1661 static int 1662 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1663 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1664 { 1665 struct ieee80211vap *vap = ni->ni_vap; 1666 struct ieee80211com *ic = ni->ni_ic; 1667 struct rt2560_tx_desc *desc; 1668 struct rt2560_tx_data *data; 1669 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1670 uint32_t flags; 1671 int nsegs, rate, error; 1672 1673 desc = &sc->prioq.desc[sc->prioq.cur]; 1674 data = &sc->prioq.data[sc->prioq.cur]; 1675 1676 rate = params->ibp_rate0; 1677 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1678 /* XXX fall back to mcast/mgmt rate? */ 1679 m_freem(m0); 1680 return EINVAL; 1681 } 1682 1683 flags = 0; 1684 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1685 flags |= RT2560_TX_ACK; 1686 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1687 error = rt2560_sendprot(sc, m0, ni, 1688 params->ibp_flags & IEEE80211_BPF_RTS ? 1689 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1690 rate); 1691 if (error) { 1692 m_freem(m0); 1693 return error; 1694 } 1695 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1696 } 1697 1698 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1699 segs, &nsegs, 0); 1700 if (error != 0) { 1701 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1702 error); 1703 m_freem(m0); 1704 return error; 1705 } 1706 1707 if (ieee80211_radiotap_active_vap(vap)) { 1708 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1709 1710 tap->wt_flags = 0; 1711 tap->wt_rate = rate; 1712 tap->wt_antenna = sc->tx_ant; 1713 1714 ieee80211_radiotap_tx(ni->ni_vap, m0); 1715 } 1716 1717 data->m = m0; 1718 data->ni = ni; 1719 1720 /* XXX need to setup descriptor ourself */ 1721 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1722 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1723 segs->ds_addr); 1724 1725 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1726 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1727 BUS_DMASYNC_PREWRITE); 1728 1729 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1730 m0->m_pkthdr.len, sc->prioq.cur, rate); 1731 1732 /* kick prio */ 1733 sc->prioq.queued++; 1734 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1735 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1736 1737 return 0; 1738 } 1739 1740 static int 1741 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1742 struct ieee80211_node *ni) 1743 { 1744 struct ieee80211vap *vap = ni->ni_vap; 1745 struct ieee80211com *ic = ni->ni_ic; 1746 struct rt2560_tx_desc *desc; 1747 struct rt2560_tx_data *data; 1748 struct ieee80211_frame *wh; 1749 const struct ieee80211_txparam *tp = ni->ni_txparms; 1750 struct ieee80211_key *k; 1751 struct mbuf *mnew; 1752 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1753 uint16_t dur; 1754 uint32_t flags; 1755 int nsegs, rate, error; 1756 1757 wh = mtod(m0, struct ieee80211_frame *); 1758 1759 if (m0->m_flags & M_EAPOL) { 1760 rate = tp->mgmtrate; 1761 } else if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1762 rate = tp->mcastrate; 1763 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1764 rate = tp->ucastrate; 1765 } else { 1766 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1767 rate = ni->ni_txrate; 1768 } 1769 1770 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1771 k = ieee80211_crypto_encap(ni, m0); 1772 if (k == NULL) { 1773 m_freem(m0); 1774 return ENOBUFS; 1775 } 1776 1777 /* packet header may have moved, reset our local pointer */ 1778 wh = mtod(m0, struct ieee80211_frame *); 1779 } 1780 1781 flags = 0; 1782 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1783 int prot = IEEE80211_PROT_NONE; 1784 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1785 prot = IEEE80211_PROT_RTSCTS; 1786 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1787 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1788 prot = ic->ic_protmode; 1789 if (prot != IEEE80211_PROT_NONE) { 1790 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1791 if (error) { 1792 m_freem(m0); 1793 return error; 1794 } 1795 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1796 } 1797 } 1798 1799 data = &sc->txq.data[sc->txq.cur_encrypt]; 1800 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1801 1802 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1803 segs, &nsegs, 0); 1804 if (error != 0 && error != EFBIG) { 1805 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1806 error); 1807 m_freem(m0); 1808 return error; 1809 } 1810 if (error != 0) { 1811 mnew = m_defrag(m0, M_NOWAIT); 1812 if (mnew == NULL) { 1813 device_printf(sc->sc_dev, 1814 "could not defragment mbuf\n"); 1815 m_freem(m0); 1816 return ENOBUFS; 1817 } 1818 m0 = mnew; 1819 1820 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1821 m0, segs, &nsegs, 0); 1822 if (error != 0) { 1823 device_printf(sc->sc_dev, 1824 "could not map mbuf (error %d)\n", error); 1825 m_freem(m0); 1826 return error; 1827 } 1828 1829 /* packet header may have moved, reset our local pointer */ 1830 wh = mtod(m0, struct ieee80211_frame *); 1831 } 1832 1833 if (ieee80211_radiotap_active_vap(vap)) { 1834 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1835 1836 tap->wt_flags = 0; 1837 tap->wt_rate = rate; 1838 tap->wt_antenna = sc->tx_ant; 1839 1840 ieee80211_radiotap_tx(vap, m0); 1841 } 1842 1843 data->m = m0; 1844 data->ni = ni; 1845 1846 /* remember link conditions for rate adaptation algorithm */ 1847 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1848 data->rix = ni->ni_txrate; 1849 /* XXX probably need last rssi value and not avg */ 1850 data->rssi = ic->ic_node_getrssi(ni); 1851 } else 1852 data->rix = IEEE80211_FIXED_RATE_NONE; 1853 1854 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1855 flags |= RT2560_TX_ACK; 1856 1857 dur = ieee80211_ack_duration(ic->ic_rt, 1858 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1859 *(uint16_t *)wh->i_dur = htole16(dur); 1860 } 1861 1862 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1863 segs->ds_addr); 1864 1865 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1866 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1867 BUS_DMASYNC_PREWRITE); 1868 1869 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1870 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1871 1872 /* kick encrypt */ 1873 sc->txq.queued++; 1874 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1875 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1876 1877 return 0; 1878 } 1879 1880 static int 1881 rt2560_transmit(struct ieee80211com *ic, struct mbuf *m) 1882 { 1883 struct rt2560_softc *sc = ic->ic_softc; 1884 int error; 1885 1886 RAL_LOCK(sc); 1887 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1888 RAL_UNLOCK(sc); 1889 return (ENXIO); 1890 } 1891 error = mbufq_enqueue(&sc->sc_snd, m); 1892 if (error) { 1893 RAL_UNLOCK(sc); 1894 return (error); 1895 } 1896 rt2560_start(sc); 1897 RAL_UNLOCK(sc); 1898 1899 return (0); 1900 } 1901 1902 static void 1903 rt2560_start(struct rt2560_softc *sc) 1904 { 1905 struct ieee80211_node *ni; 1906 struct mbuf *m; 1907 1908 RAL_LOCK_ASSERT(sc); 1909 1910 while (sc->txq.queued < RT2560_TX_RING_COUNT - 1 && 1911 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1912 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1913 if (rt2560_tx_data(sc, m, ni) != 0) { 1914 if_inc_counter(ni->ni_vap->iv_ifp, 1915 IFCOUNTER_OERRORS, 1); 1916 ieee80211_free_node(ni); 1917 break; 1918 } 1919 sc->sc_tx_timer = 5; 1920 } 1921 } 1922 1923 static void 1924 rt2560_watchdog(void *arg) 1925 { 1926 struct rt2560_softc *sc = arg; 1927 1928 RAL_LOCK_ASSERT(sc); 1929 1930 KASSERT(sc->sc_flags & RT2560_F_RUNNING, ("not running")); 1931 1932 if (sc->sc_invalid) /* card ejected */ 1933 return; 1934 1935 rt2560_encryption_intr(sc); 1936 rt2560_tx_intr(sc); 1937 1938 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1939 device_printf(sc->sc_dev, "device timeout\n"); 1940 rt2560_init_locked(sc); 1941 counter_u64_add(sc->sc_ic.ic_oerrors, 1); 1942 /* NB: callout is reset in rt2560_init() */ 1943 return; 1944 } 1945 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1946 } 1947 1948 static void 1949 rt2560_parent(struct ieee80211com *ic) 1950 { 1951 struct rt2560_softc *sc = ic->ic_softc; 1952 int startall = 0; 1953 1954 RAL_LOCK(sc); 1955 if (ic->ic_nrunning > 0) { 1956 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1957 rt2560_init_locked(sc); 1958 startall = 1; 1959 } else 1960 rt2560_update_promisc(ic); 1961 } else if (sc->sc_flags & RT2560_F_RUNNING) 1962 rt2560_stop_locked(sc); 1963 RAL_UNLOCK(sc); 1964 if (startall) 1965 ieee80211_start_all(ic); 1966 } 1967 1968 static void 1969 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 1970 { 1971 uint32_t tmp; 1972 int ntries; 1973 1974 for (ntries = 0; ntries < 100; ntries++) { 1975 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1976 break; 1977 DELAY(1); 1978 } 1979 if (ntries == 100) { 1980 device_printf(sc->sc_dev, "could not write to BBP\n"); 1981 return; 1982 } 1983 1984 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 1985 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 1986 1987 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 1988 } 1989 1990 static uint8_t 1991 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 1992 { 1993 uint32_t val; 1994 int ntries; 1995 1996 for (ntries = 0; ntries < 100; ntries++) { 1997 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1998 break; 1999 DELAY(1); 2000 } 2001 if (ntries == 100) { 2002 device_printf(sc->sc_dev, "could not read from BBP\n"); 2003 return 0; 2004 } 2005 2006 val = RT2560_BBP_BUSY | reg << 8; 2007 RAL_WRITE(sc, RT2560_BBPCSR, val); 2008 2009 for (ntries = 0; ntries < 100; ntries++) { 2010 val = RAL_READ(sc, RT2560_BBPCSR); 2011 if (!(val & RT2560_BBP_BUSY)) 2012 return val & 0xff; 2013 DELAY(1); 2014 } 2015 2016 device_printf(sc->sc_dev, "could not read from BBP\n"); 2017 return 0; 2018 } 2019 2020 static void 2021 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2022 { 2023 uint32_t tmp; 2024 int ntries; 2025 2026 for (ntries = 0; ntries < 100; ntries++) { 2027 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2028 break; 2029 DELAY(1); 2030 } 2031 if (ntries == 100) { 2032 device_printf(sc->sc_dev, "could not write to RF\n"); 2033 return; 2034 } 2035 2036 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2037 (reg & 0x3); 2038 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2039 2040 /* remember last written value in sc */ 2041 sc->rf_regs[reg] = val; 2042 2043 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2044 } 2045 2046 static void 2047 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2048 { 2049 struct ieee80211com *ic = &sc->sc_ic; 2050 uint8_t power, tmp; 2051 u_int i, chan; 2052 2053 chan = ieee80211_chan2ieee(ic, c); 2054 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2055 2056 if (IEEE80211_IS_CHAN_2GHZ(c)) 2057 power = min(sc->txpow[chan - 1], 31); 2058 else 2059 power = 31; 2060 2061 /* adjust txpower using ifconfig settings */ 2062 power -= (100 - ic->ic_txpowlimit) / 8; 2063 2064 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2065 2066 switch (sc->rf_rev) { 2067 case RT2560_RF_2522: 2068 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2069 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2070 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2071 break; 2072 2073 case RT2560_RF_2523: 2074 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2075 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2076 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2077 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2078 break; 2079 2080 case RT2560_RF_2524: 2081 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2082 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2083 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2084 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2085 break; 2086 2087 case RT2560_RF_2525: 2088 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2089 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2090 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2091 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2092 2093 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2094 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2095 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2096 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2097 break; 2098 2099 case RT2560_RF_2525E: 2100 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2101 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2102 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2103 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2104 break; 2105 2106 case RT2560_RF_2526: 2107 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2108 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2109 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2110 2111 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2112 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2113 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2114 break; 2115 2116 /* dual-band RF */ 2117 case RT2560_RF_5222: 2118 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2119 2120 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2121 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2122 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2123 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2124 break; 2125 default: 2126 printf("unknown ral rev=%d\n", sc->rf_rev); 2127 } 2128 2129 /* XXX */ 2130 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2131 /* set Japan filter bit for channel 14 */ 2132 tmp = rt2560_bbp_read(sc, 70); 2133 2134 tmp &= ~RT2560_JAPAN_FILTER; 2135 if (chan == 14) 2136 tmp |= RT2560_JAPAN_FILTER; 2137 2138 rt2560_bbp_write(sc, 70, tmp); 2139 2140 /* clear CRC errors */ 2141 RAL_READ(sc, RT2560_CNT0); 2142 } 2143 } 2144 2145 static void 2146 rt2560_getradiocaps(struct ieee80211com *ic, 2147 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2148 { 2149 struct rt2560_softc *sc = ic->ic_softc; 2150 uint8_t bands[IEEE80211_MODE_BYTES]; 2151 2152 memset(bands, 0, sizeof(bands)); 2153 setbit(bands, IEEE80211_MODE_11B); 2154 setbit(bands, IEEE80211_MODE_11G); 2155 ieee80211_add_channel_list_2ghz(chans, maxchans, nchans, 2156 rt2560_chan_2ghz, nitems(rt2560_chan_2ghz), bands, 0); 2157 2158 if (sc->rf_rev == RT2560_RF_5222) { 2159 setbit(bands, IEEE80211_MODE_11A); 2160 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans, 2161 rt2560_chan_5ghz, nitems(rt2560_chan_5ghz), bands, 0); 2162 } 2163 } 2164 2165 static void 2166 rt2560_set_channel(struct ieee80211com *ic) 2167 { 2168 struct rt2560_softc *sc = ic->ic_softc; 2169 2170 RAL_LOCK(sc); 2171 rt2560_set_chan(sc, ic->ic_curchan); 2172 RAL_UNLOCK(sc); 2173 2174 } 2175 2176 #if 0 2177 /* 2178 * Disable RF auto-tuning. 2179 */ 2180 static void 2181 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2182 { 2183 uint32_t tmp; 2184 2185 if (sc->rf_rev != RT2560_RF_2523) { 2186 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2187 rt2560_rf_write(sc, RAL_RF1, tmp); 2188 } 2189 2190 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2191 rt2560_rf_write(sc, RAL_RF3, tmp); 2192 2193 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2194 } 2195 #endif 2196 2197 /* 2198 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2199 * synchronization. 2200 */ 2201 static void 2202 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2203 { 2204 struct ieee80211com *ic = &sc->sc_ic; 2205 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2206 uint16_t logcwmin, preload; 2207 uint32_t tmp; 2208 2209 /* first, disable TSF synchronization */ 2210 RAL_WRITE(sc, RT2560_CSR14, 0); 2211 2212 tmp = 16 * vap->iv_bss->ni_intval; 2213 RAL_WRITE(sc, RT2560_CSR12, tmp); 2214 2215 RAL_WRITE(sc, RT2560_CSR13, 0); 2216 2217 logcwmin = 5; 2218 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2219 tmp = logcwmin << 16 | preload; 2220 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2221 2222 /* finally, enable TSF synchronization */ 2223 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2224 if (ic->ic_opmode == IEEE80211_M_STA) 2225 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2226 else 2227 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2228 RT2560_ENABLE_BEACON_GENERATOR; 2229 RAL_WRITE(sc, RT2560_CSR14, tmp); 2230 2231 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2232 } 2233 2234 static void 2235 rt2560_enable_tsf(struct rt2560_softc *sc) 2236 { 2237 RAL_WRITE(sc, RT2560_CSR14, 0); 2238 RAL_WRITE(sc, RT2560_CSR14, 2239 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2240 } 2241 2242 static void 2243 rt2560_update_plcp(struct rt2560_softc *sc) 2244 { 2245 struct ieee80211com *ic = &sc->sc_ic; 2246 2247 /* no short preamble for 1Mbps */ 2248 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2249 2250 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2251 /* values taken from the reference driver */ 2252 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2253 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2254 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2255 } else { 2256 /* same values as above or'ed 0x8 */ 2257 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2258 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2259 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2260 } 2261 2262 DPRINTF(sc, "updating PLCP for %s preamble\n", 2263 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2264 } 2265 2266 /* 2267 * This function can be called by ieee80211_set_shortslottime(). Refer to 2268 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2269 */ 2270 static void 2271 rt2560_update_slot(struct ieee80211com *ic) 2272 { 2273 struct rt2560_softc *sc = ic->ic_softc; 2274 uint8_t slottime; 2275 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2276 uint32_t tmp; 2277 2278 #ifndef FORCE_SLOTTIME 2279 slottime = IEEE80211_GET_SLOTTIME(ic); 2280 #else 2281 /* 2282 * Setting slot time according to "short slot time" capability 2283 * in beacon/probe_resp seems to cause problem to acknowledge 2284 * certain AP's data frames transimitted at CCK/DS rates: the 2285 * problematic AP keeps retransmitting data frames, probably 2286 * because MAC level acks are not received by hardware. 2287 * So we cheat a little bit here by claiming we are capable of 2288 * "short slot time" but setting hardware slot time to the normal 2289 * slot time. ral(4) does not seem to have trouble to receive 2290 * frames transmitted using short slot time even if hardware 2291 * slot time is set to normal slot time. If we didn't use this 2292 * trick, we would have to claim that short slot time is not 2293 * supported; this would give relative poor RX performance 2294 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2295 * slot time. 2296 */ 2297 slottime = IEEE80211_DUR_SLOT; 2298 #endif 2299 2300 /* update the MAC slot boundaries */ 2301 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2302 tx_pifs = tx_sifs + slottime; 2303 tx_difs = IEEE80211_DUR_DIFS(tx_sifs, slottime); 2304 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2305 2306 tmp = RAL_READ(sc, RT2560_CSR11); 2307 tmp = (tmp & ~0x1f00) | slottime << 8; 2308 RAL_WRITE(sc, RT2560_CSR11, tmp); 2309 2310 tmp = tx_pifs << 16 | tx_sifs; 2311 RAL_WRITE(sc, RT2560_CSR18, tmp); 2312 2313 tmp = eifs << 16 | tx_difs; 2314 RAL_WRITE(sc, RT2560_CSR19, tmp); 2315 2316 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2317 } 2318 2319 static void 2320 rt2560_set_basicrates(struct rt2560_softc *sc, 2321 const struct ieee80211_rateset *rs) 2322 { 2323 struct ieee80211com *ic = &sc->sc_ic; 2324 uint32_t mask = 0; 2325 uint8_t rate; 2326 int i; 2327 2328 for (i = 0; i < rs->rs_nrates; i++) { 2329 rate = rs->rs_rates[i]; 2330 2331 if (!(rate & IEEE80211_RATE_BASIC)) 2332 continue; 2333 2334 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, 2335 IEEE80211_RV(rate)); 2336 } 2337 2338 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2339 2340 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2341 } 2342 2343 static void 2344 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2345 { 2346 uint32_t tmp; 2347 2348 /* set ON period to 70ms and OFF period to 30ms */ 2349 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2350 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2351 } 2352 2353 static void 2354 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2355 { 2356 uint32_t tmp; 2357 2358 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2359 RAL_WRITE(sc, RT2560_CSR5, tmp); 2360 2361 tmp = bssid[4] | bssid[5] << 8; 2362 RAL_WRITE(sc, RT2560_CSR6, tmp); 2363 2364 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2365 } 2366 2367 static void 2368 rt2560_set_macaddr(struct rt2560_softc *sc, const uint8_t *addr) 2369 { 2370 uint32_t tmp; 2371 2372 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2373 RAL_WRITE(sc, RT2560_CSR3, tmp); 2374 2375 tmp = addr[4] | addr[5] << 8; 2376 RAL_WRITE(sc, RT2560_CSR4, tmp); 2377 2378 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2379 } 2380 2381 static void 2382 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2383 { 2384 uint32_t tmp; 2385 2386 tmp = RAL_READ(sc, RT2560_CSR3); 2387 addr[0] = tmp & 0xff; 2388 addr[1] = (tmp >> 8) & 0xff; 2389 addr[2] = (tmp >> 16) & 0xff; 2390 addr[3] = (tmp >> 24); 2391 2392 tmp = RAL_READ(sc, RT2560_CSR4); 2393 addr[4] = tmp & 0xff; 2394 addr[5] = (tmp >> 8) & 0xff; 2395 } 2396 2397 static void 2398 rt2560_update_promisc(struct ieee80211com *ic) 2399 { 2400 struct rt2560_softc *sc = ic->ic_softc; 2401 uint32_t tmp; 2402 2403 tmp = RAL_READ(sc, RT2560_RXCSR0); 2404 2405 tmp &= ~RT2560_DROP_NOT_TO_ME; 2406 if (ic->ic_promisc == 0) 2407 tmp |= RT2560_DROP_NOT_TO_ME; 2408 2409 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2410 2411 DPRINTF(sc, "%s promiscuous mode\n", 2412 (ic->ic_promisc > 0) ? "entering" : "leaving"); 2413 } 2414 2415 static const char * 2416 rt2560_get_rf(int rev) 2417 { 2418 switch (rev) { 2419 case RT2560_RF_2522: return "RT2522"; 2420 case RT2560_RF_2523: return "RT2523"; 2421 case RT2560_RF_2524: return "RT2524"; 2422 case RT2560_RF_2525: return "RT2525"; 2423 case RT2560_RF_2525E: return "RT2525e"; 2424 case RT2560_RF_2526: return "RT2526"; 2425 case RT2560_RF_5222: return "RT5222"; 2426 default: return "unknown"; 2427 } 2428 } 2429 2430 static void 2431 rt2560_read_config(struct rt2560_softc *sc) 2432 { 2433 uint16_t val; 2434 int i; 2435 2436 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2437 sc->rf_rev = (val >> 11) & 0x7; 2438 sc->hw_radio = (val >> 10) & 0x1; 2439 sc->led_mode = (val >> 6) & 0x7; 2440 sc->rx_ant = (val >> 4) & 0x3; 2441 sc->tx_ant = (val >> 2) & 0x3; 2442 sc->nb_ant = val & 0x3; 2443 2444 /* read default values for BBP registers */ 2445 for (i = 0; i < 16; i++) { 2446 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2447 if (val == 0 || val == 0xffff) 2448 continue; 2449 2450 sc->bbp_prom[i].reg = val >> 8; 2451 sc->bbp_prom[i].val = val & 0xff; 2452 } 2453 2454 /* read Tx power for all b/g channels */ 2455 for (i = 0; i < 14 / 2; i++) { 2456 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2457 sc->txpow[i * 2] = val & 0xff; 2458 sc->txpow[i * 2 + 1] = val >> 8; 2459 } 2460 for (i = 0; i < 14; ++i) { 2461 if (sc->txpow[i] > 31) 2462 sc->txpow[i] = 24; 2463 } 2464 2465 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2466 if ((val & 0xff) == 0xff) 2467 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2468 else 2469 sc->rssi_corr = val & 0xff; 2470 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2471 sc->rssi_corr, val); 2472 } 2473 2474 2475 static void 2476 rt2560_scan_start(struct ieee80211com *ic) 2477 { 2478 struct rt2560_softc *sc = ic->ic_softc; 2479 2480 /* abort TSF synchronization */ 2481 RAL_WRITE(sc, RT2560_CSR14, 0); 2482 rt2560_set_bssid(sc, ieee80211broadcastaddr); 2483 } 2484 2485 static void 2486 rt2560_scan_end(struct ieee80211com *ic) 2487 { 2488 struct rt2560_softc *sc = ic->ic_softc; 2489 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2490 2491 rt2560_enable_tsf_sync(sc); 2492 /* XXX keep local copy */ 2493 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2494 } 2495 2496 static int 2497 rt2560_bbp_init(struct rt2560_softc *sc) 2498 { 2499 int i, ntries; 2500 2501 /* wait for BBP to be ready */ 2502 for (ntries = 0; ntries < 100; ntries++) { 2503 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2504 break; 2505 DELAY(1); 2506 } 2507 if (ntries == 100) { 2508 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2509 return EIO; 2510 } 2511 2512 /* initialize BBP registers to default values */ 2513 for (i = 0; i < nitems(rt2560_def_bbp); i++) { 2514 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2515 rt2560_def_bbp[i].val); 2516 } 2517 2518 /* initialize BBP registers to values stored in EEPROM */ 2519 for (i = 0; i < 16; i++) { 2520 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2521 break; 2522 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2523 } 2524 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2525 2526 return 0; 2527 } 2528 2529 static void 2530 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2531 { 2532 uint32_t tmp; 2533 uint8_t tx; 2534 2535 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2536 if (antenna == 1) 2537 tx |= RT2560_BBP_ANTA; 2538 else if (antenna == 2) 2539 tx |= RT2560_BBP_ANTB; 2540 else 2541 tx |= RT2560_BBP_DIVERSITY; 2542 2543 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2544 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2545 sc->rf_rev == RT2560_RF_5222) 2546 tx |= RT2560_BBP_FLIPIQ; 2547 2548 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2549 2550 /* update values for CCK and OFDM in BBPCSR1 */ 2551 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2552 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2553 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2554 } 2555 2556 static void 2557 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2558 { 2559 uint8_t rx; 2560 2561 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2562 if (antenna == 1) 2563 rx |= RT2560_BBP_ANTA; 2564 else if (antenna == 2) 2565 rx |= RT2560_BBP_ANTB; 2566 else 2567 rx |= RT2560_BBP_DIVERSITY; 2568 2569 /* need to force no I/Q flip for RF 2525e and 2526 */ 2570 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2571 rx &= ~RT2560_BBP_FLIPIQ; 2572 2573 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2574 } 2575 2576 static void 2577 rt2560_init_locked(struct rt2560_softc *sc) 2578 { 2579 struct ieee80211com *ic = &sc->sc_ic; 2580 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2581 uint32_t tmp; 2582 int i; 2583 2584 RAL_LOCK_ASSERT(sc); 2585 2586 rt2560_stop_locked(sc); 2587 2588 /* setup tx rings */ 2589 tmp = RT2560_PRIO_RING_COUNT << 24 | 2590 RT2560_ATIM_RING_COUNT << 16 | 2591 RT2560_TX_RING_COUNT << 8 | 2592 RT2560_TX_DESC_SIZE; 2593 2594 /* rings must be initialized in this exact order */ 2595 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2596 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2597 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2598 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2599 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2600 2601 /* setup rx ring */ 2602 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2603 2604 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2605 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2606 2607 /* initialize MAC registers to default values */ 2608 for (i = 0; i < nitems(rt2560_def_mac); i++) 2609 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2610 2611 rt2560_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr); 2612 2613 /* set basic rate set (will be updated later) */ 2614 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2615 2616 rt2560_update_slot(ic); 2617 rt2560_update_plcp(sc); 2618 rt2560_update_led(sc, 0, 0); 2619 2620 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2621 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2622 2623 if (rt2560_bbp_init(sc) != 0) { 2624 rt2560_stop_locked(sc); 2625 return; 2626 } 2627 2628 rt2560_set_txantenna(sc, sc->tx_ant); 2629 rt2560_set_rxantenna(sc, sc->rx_ant); 2630 2631 /* set default BSS channel */ 2632 rt2560_set_chan(sc, ic->ic_curchan); 2633 2634 /* kick Rx */ 2635 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2636 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2637 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2638 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2639 ic->ic_opmode != IEEE80211_M_MBSS) 2640 tmp |= RT2560_DROP_TODS; 2641 if (ic->ic_promisc == 0) 2642 tmp |= RT2560_DROP_NOT_TO_ME; 2643 } 2644 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2645 2646 /* clear old FCS and Rx FIFO errors */ 2647 RAL_READ(sc, RT2560_CNT0); 2648 RAL_READ(sc, RT2560_CNT4); 2649 2650 /* clear any pending interrupts */ 2651 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2652 2653 /* enable interrupts */ 2654 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2655 2656 sc->sc_flags |= RT2560_F_RUNNING; 2657 2658 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2659 } 2660 2661 static void 2662 rt2560_init(void *priv) 2663 { 2664 struct rt2560_softc *sc = priv; 2665 struct ieee80211com *ic = &sc->sc_ic; 2666 2667 RAL_LOCK(sc); 2668 rt2560_init_locked(sc); 2669 RAL_UNLOCK(sc); 2670 2671 if (sc->sc_flags & RT2560_F_RUNNING) 2672 ieee80211_start_all(ic); /* start all vap's */ 2673 } 2674 2675 static void 2676 rt2560_stop_locked(struct rt2560_softc *sc) 2677 { 2678 volatile int *flags = &sc->sc_flags; 2679 2680 RAL_LOCK_ASSERT(sc); 2681 2682 while (*flags & RT2560_F_INPUT_RUNNING) 2683 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2684 2685 callout_stop(&sc->watchdog_ch); 2686 sc->sc_tx_timer = 0; 2687 2688 if (sc->sc_flags & RT2560_F_RUNNING) { 2689 sc->sc_flags &= ~RT2560_F_RUNNING; 2690 2691 /* abort Tx */ 2692 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2693 2694 /* disable Rx */ 2695 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2696 2697 /* reset ASIC (imply reset BBP) */ 2698 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2699 RAL_WRITE(sc, RT2560_CSR1, 0); 2700 2701 /* disable interrupts */ 2702 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2703 2704 /* reset Tx and Rx rings */ 2705 rt2560_reset_tx_ring(sc, &sc->txq); 2706 rt2560_reset_tx_ring(sc, &sc->atimq); 2707 rt2560_reset_tx_ring(sc, &sc->prioq); 2708 rt2560_reset_tx_ring(sc, &sc->bcnq); 2709 rt2560_reset_rx_ring(sc, &sc->rxq); 2710 } 2711 } 2712 2713 void 2714 rt2560_stop(void *arg) 2715 { 2716 struct rt2560_softc *sc = arg; 2717 2718 RAL_LOCK(sc); 2719 rt2560_stop_locked(sc); 2720 RAL_UNLOCK(sc); 2721 } 2722 2723 static int 2724 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2725 const struct ieee80211_bpf_params *params) 2726 { 2727 struct ieee80211com *ic = ni->ni_ic; 2728 struct rt2560_softc *sc = ic->ic_softc; 2729 2730 RAL_LOCK(sc); 2731 2732 /* prevent management frames from being sent if we're not ready */ 2733 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 2734 RAL_UNLOCK(sc); 2735 m_freem(m); 2736 return ENETDOWN; 2737 } 2738 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2739 RAL_UNLOCK(sc); 2740 m_freem(m); 2741 return ENOBUFS; /* XXX */ 2742 } 2743 2744 if (params == NULL) { 2745 /* 2746 * Legacy path; interpret frame contents to decide 2747 * precisely how to send the frame. 2748 */ 2749 if (rt2560_tx_mgt(sc, m, ni) != 0) 2750 goto bad; 2751 } else { 2752 /* 2753 * Caller supplied explicit parameters to use in 2754 * sending the frame. 2755 */ 2756 if (rt2560_tx_raw(sc, m, ni, params)) 2757 goto bad; 2758 } 2759 sc->sc_tx_timer = 5; 2760 2761 RAL_UNLOCK(sc); 2762 2763 return 0; 2764 bad: 2765 RAL_UNLOCK(sc); 2766 return EIO; /* XXX */ 2767 } 2768