1 2 /*- 3 * Copyright (c) 2005, 2006 4 * Damien Bergamini <damien.bergamini@free.fr> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/cdefs.h> 20 /*- 21 * Ralink Technology RT2560 chipset driver 22 * http://www.ralinktech.com/ 23 */ 24 25 #include <sys/param.h> 26 #include <sys/sysctl.h> 27 #include <sys/sockio.h> 28 #include <sys/mbuf.h> 29 #include <sys/kernel.h> 30 #include <sys/socket.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/lock.h> 34 #include <sys/mutex.h> 35 #include <sys/module.h> 36 #include <sys/bus.h> 37 #include <sys/endian.h> 38 39 #include <machine/bus.h> 40 #include <machine/resource.h> 41 #include <sys/rman.h> 42 43 #include <net/bpf.h> 44 #include <net/if.h> 45 #include <net/if_var.h> 46 #include <net/if_arp.h> 47 #include <net/ethernet.h> 48 #include <net/if_dl.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 52 #include <net80211/ieee80211_var.h> 53 #include <net80211/ieee80211_radiotap.h> 54 #include <net80211/ieee80211_regdomain.h> 55 #include <net80211/ieee80211_ratectl.h> 56 57 #include <netinet/in.h> 58 #include <netinet/in_systm.h> 59 #include <netinet/in_var.h> 60 #include <netinet/ip.h> 61 #include <netinet/if_ether.h> 62 63 #include <dev/ral/rt2560reg.h> 64 #include <dev/ral/rt2560var.h> 65 66 #define RT2560_RSSI(sc, rssi) \ 67 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 68 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 69 70 #define RAL_DEBUG 71 #ifdef RAL_DEBUG 72 #define DPRINTF(sc, fmt, ...) do { \ 73 if (sc->sc_debug > 0) \ 74 printf(fmt, __VA_ARGS__); \ 75 } while (0) 76 #define DPRINTFN(sc, n, fmt, ...) do { \ 77 if (sc->sc_debug >= (n)) \ 78 printf(fmt, __VA_ARGS__); \ 79 } while (0) 80 #else 81 #define DPRINTF(sc, fmt, ...) 82 #define DPRINTFN(sc, n, fmt, ...) 83 #endif 84 85 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 86 const char [IFNAMSIZ], int, enum ieee80211_opmode, 87 int, const uint8_t [IEEE80211_ADDR_LEN], 88 const uint8_t [IEEE80211_ADDR_LEN]); 89 static void rt2560_vap_delete(struct ieee80211vap *); 90 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 91 int); 92 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 93 struct rt2560_tx_ring *, int); 94 static void rt2560_reset_tx_ring(struct rt2560_softc *, 95 struct rt2560_tx_ring *); 96 static void rt2560_free_tx_ring(struct rt2560_softc *, 97 struct rt2560_tx_ring *); 98 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 99 struct rt2560_rx_ring *, int); 100 static void rt2560_reset_rx_ring(struct rt2560_softc *, 101 struct rt2560_rx_ring *); 102 static void rt2560_free_rx_ring(struct rt2560_softc *, 103 struct rt2560_rx_ring *); 104 static int rt2560_newstate(struct ieee80211vap *, 105 enum ieee80211_state, int); 106 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 107 static void rt2560_encryption_intr(struct rt2560_softc *); 108 static void rt2560_tx_intr(struct rt2560_softc *); 109 static void rt2560_prio_intr(struct rt2560_softc *); 110 static void rt2560_decryption_intr(struct rt2560_softc *); 111 static void rt2560_rx_intr(struct rt2560_softc *); 112 static void rt2560_beacon_update(struct ieee80211vap *, int item); 113 static void rt2560_beacon_expire(struct rt2560_softc *); 114 static void rt2560_wakeup_expire(struct rt2560_softc *); 115 static void rt2560_scan_start(struct ieee80211com *); 116 static void rt2560_scan_end(struct ieee80211com *); 117 static void rt2560_getradiocaps(struct ieee80211com *, int, int *, 118 struct ieee80211_channel[]); 119 static void rt2560_set_channel(struct ieee80211com *); 120 static void rt2560_setup_tx_desc(struct rt2560_softc *, 121 struct rt2560_tx_desc *, uint32_t, int, int, int, 122 bus_addr_t); 123 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 124 struct ieee80211_node *); 125 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 126 struct ieee80211_node *); 127 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 128 struct ieee80211_node *); 129 static int rt2560_transmit(struct ieee80211com *, struct mbuf *); 130 static void rt2560_start(struct rt2560_softc *); 131 static void rt2560_watchdog(void *); 132 static void rt2560_parent(struct ieee80211com *); 133 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 134 uint8_t); 135 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 136 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 137 uint32_t); 138 static void rt2560_set_chan(struct rt2560_softc *, 139 struct ieee80211_channel *); 140 #if 0 141 static void rt2560_disable_rf_tune(struct rt2560_softc *); 142 #endif 143 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 144 static void rt2560_enable_tsf(struct rt2560_softc *); 145 static void rt2560_update_plcp(struct rt2560_softc *); 146 static void rt2560_update_slot(struct ieee80211com *); 147 static void rt2560_set_basicrates(struct rt2560_softc *, 148 const struct ieee80211_rateset *); 149 static void rt2560_update_led(struct rt2560_softc *, int, int); 150 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 151 static void rt2560_set_macaddr(struct rt2560_softc *, 152 const uint8_t *); 153 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 154 static void rt2560_update_promisc(struct ieee80211com *); 155 static const char *rt2560_get_rf(int); 156 static void rt2560_read_config(struct rt2560_softc *); 157 static int rt2560_bbp_init(struct rt2560_softc *); 158 static void rt2560_set_txantenna(struct rt2560_softc *, int); 159 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 160 static void rt2560_init_locked(struct rt2560_softc *); 161 static void rt2560_init(void *); 162 static void rt2560_stop_locked(struct rt2560_softc *); 163 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 164 const struct ieee80211_bpf_params *); 165 166 static const struct { 167 uint32_t reg; 168 uint32_t val; 169 } rt2560_def_mac[] = { 170 RT2560_DEF_MAC 171 }; 172 173 static const struct { 174 uint8_t reg; 175 uint8_t val; 176 } rt2560_def_bbp[] = { 177 RT2560_DEF_BBP 178 }; 179 180 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 181 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 182 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 183 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 184 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 185 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 186 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 187 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 188 189 static const uint8_t rt2560_chan_5ghz[] = 190 { 36, 40, 44, 48, 52, 56, 60, 64, 191 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 192 149, 153, 157, 161 }; 193 194 static const struct { 195 uint8_t chan; 196 uint32_t r1, r2, r4; 197 } rt2560_rf5222[] = { 198 RT2560_RF5222 199 }; 200 201 int 202 rt2560_attach(device_t dev, int id) 203 { 204 struct rt2560_softc *sc = device_get_softc(dev); 205 struct ieee80211com *ic = &sc->sc_ic; 206 int error; 207 208 sc->sc_dev = dev; 209 210 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 211 MTX_DEF | MTX_RECURSE); 212 213 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 214 mbufq_init(&sc->sc_snd, ifqmaxlen); 215 216 /* retrieve RT2560 rev. no */ 217 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 218 219 /* retrieve RF rev. no and various other things from EEPROM */ 220 rt2560_read_config(sc); 221 222 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 223 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 224 225 /* 226 * Allocate Tx and Rx rings. 227 */ 228 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 229 if (error != 0) { 230 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 231 goto fail1; 232 } 233 234 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 235 if (error != 0) { 236 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 237 goto fail2; 238 } 239 240 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 241 if (error != 0) { 242 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 243 goto fail3; 244 } 245 246 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 247 if (error != 0) { 248 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 249 goto fail4; 250 } 251 252 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 253 if (error != 0) { 254 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 255 goto fail5; 256 } 257 258 /* retrieve MAC address */ 259 rt2560_get_macaddr(sc, ic->ic_macaddr); 260 261 ic->ic_softc = sc; 262 ic->ic_name = device_get_nameunit(dev); 263 ic->ic_opmode = IEEE80211_M_STA; 264 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 265 266 /* set device capabilities */ 267 ic->ic_caps = 268 IEEE80211_C_STA /* station mode */ 269 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 270 | IEEE80211_C_HOSTAP /* hostap mode */ 271 | IEEE80211_C_MONITOR /* monitor mode */ 272 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 273 | IEEE80211_C_WDS /* 4-address traffic works */ 274 | IEEE80211_C_MBSS /* mesh point link mode */ 275 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 276 | IEEE80211_C_SHSLOT /* short slot time supported */ 277 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 278 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 279 #ifdef notyet 280 | IEEE80211_C_TXFRAG /* handle tx frags */ 281 #endif 282 ; 283 284 rt2560_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 285 ic->ic_channels); 286 287 ieee80211_ifattach(ic); 288 ic->ic_raw_xmit = rt2560_raw_xmit; 289 ic->ic_updateslot = rt2560_update_slot; 290 ic->ic_update_promisc = rt2560_update_promisc; 291 ic->ic_scan_start = rt2560_scan_start; 292 ic->ic_scan_end = rt2560_scan_end; 293 ic->ic_getradiocaps = rt2560_getradiocaps; 294 ic->ic_set_channel = rt2560_set_channel; 295 296 ic->ic_vap_create = rt2560_vap_create; 297 ic->ic_vap_delete = rt2560_vap_delete; 298 ic->ic_parent = rt2560_parent; 299 ic->ic_transmit = rt2560_transmit; 300 301 ieee80211_radiotap_attach(ic, 302 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 303 RT2560_TX_RADIOTAP_PRESENT, 304 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 305 RT2560_RX_RADIOTAP_PRESENT); 306 307 /* 308 * Add a few sysctl knobs. 309 */ 310 #ifdef RAL_DEBUG 311 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 312 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 313 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 314 #endif 315 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 316 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 317 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 318 319 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 320 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 321 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 322 323 if (bootverbose) 324 ieee80211_announce(ic); 325 326 return 0; 327 328 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 329 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 330 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 331 fail2: rt2560_free_tx_ring(sc, &sc->txq); 332 fail1: mtx_destroy(&sc->sc_mtx); 333 334 return ENXIO; 335 } 336 337 int 338 rt2560_detach(void *xsc) 339 { 340 struct rt2560_softc *sc = xsc; 341 struct ieee80211com *ic = &sc->sc_ic; 342 343 rt2560_stop(sc); 344 345 ieee80211_ifdetach(ic); 346 mbufq_drain(&sc->sc_snd); 347 348 rt2560_free_tx_ring(sc, &sc->txq); 349 rt2560_free_tx_ring(sc, &sc->atimq); 350 rt2560_free_tx_ring(sc, &sc->prioq); 351 rt2560_free_tx_ring(sc, &sc->bcnq); 352 rt2560_free_rx_ring(sc, &sc->rxq); 353 354 mtx_destroy(&sc->sc_mtx); 355 356 return 0; 357 } 358 359 static struct ieee80211vap * 360 rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 361 enum ieee80211_opmode opmode, int flags, 362 const uint8_t bssid[IEEE80211_ADDR_LEN], 363 const uint8_t mac[IEEE80211_ADDR_LEN]) 364 { 365 struct rt2560_softc *sc = ic->ic_softc; 366 struct rt2560_vap *rvp; 367 struct ieee80211vap *vap; 368 369 switch (opmode) { 370 case IEEE80211_M_STA: 371 case IEEE80211_M_IBSS: 372 case IEEE80211_M_AHDEMO: 373 case IEEE80211_M_MONITOR: 374 case IEEE80211_M_HOSTAP: 375 case IEEE80211_M_MBSS: 376 /* XXXRP: TBD */ 377 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 378 device_printf(sc->sc_dev, "only 1 vap supported\n"); 379 return NULL; 380 } 381 if (opmode == IEEE80211_M_STA) 382 flags |= IEEE80211_CLONE_NOBEACONS; 383 break; 384 case IEEE80211_M_WDS: 385 if (TAILQ_EMPTY(&ic->ic_vaps) || 386 ic->ic_opmode != IEEE80211_M_HOSTAP) { 387 device_printf(sc->sc_dev, 388 "wds only supported in ap mode\n"); 389 return NULL; 390 } 391 /* 392 * Silently remove any request for a unique 393 * bssid; WDS vap's always share the local 394 * mac address. 395 */ 396 flags &= ~IEEE80211_CLONE_BSSID; 397 break; 398 default: 399 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 400 return NULL; 401 } 402 rvp = malloc(sizeof(struct rt2560_vap), M_80211_VAP, M_WAITOK | M_ZERO); 403 vap = &rvp->ral_vap; 404 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 405 406 /* override state transition machine */ 407 rvp->ral_newstate = vap->iv_newstate; 408 vap->iv_newstate = rt2560_newstate; 409 vap->iv_update_beacon = rt2560_beacon_update; 410 411 ieee80211_ratectl_init(vap); 412 /* complete setup */ 413 ieee80211_vap_attach(vap, ieee80211_media_change, 414 ieee80211_media_status, mac); 415 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 416 ic->ic_opmode = opmode; 417 return vap; 418 } 419 420 static void 421 rt2560_vap_delete(struct ieee80211vap *vap) 422 { 423 struct rt2560_vap *rvp = RT2560_VAP(vap); 424 425 ieee80211_ratectl_deinit(vap); 426 ieee80211_vap_detach(vap); 427 free(rvp, M_80211_VAP); 428 } 429 430 void 431 rt2560_resume(void *xsc) 432 { 433 struct rt2560_softc *sc = xsc; 434 435 if (sc->sc_ic.ic_nrunning > 0) 436 rt2560_init(sc); 437 } 438 439 static void 440 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 441 { 442 if (error != 0) 443 return; 444 445 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 446 447 *(bus_addr_t *)arg = segs[0].ds_addr; 448 } 449 450 static int 451 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 452 int count) 453 { 454 int i, error; 455 456 ring->count = count; 457 ring->queued = 0; 458 ring->cur = ring->next = 0; 459 ring->cur_encrypt = ring->next_encrypt = 0; 460 461 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 462 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 463 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 464 0, NULL, NULL, &ring->desc_dmat); 465 if (error != 0) { 466 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 467 goto fail; 468 } 469 470 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 471 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 472 if (error != 0) { 473 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 474 goto fail; 475 } 476 477 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 478 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 479 0); 480 if (error != 0) { 481 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 482 goto fail; 483 } 484 485 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 486 M_NOWAIT | M_ZERO); 487 if (ring->data == NULL) { 488 device_printf(sc->sc_dev, "could not allocate soft data\n"); 489 error = ENOMEM; 490 goto fail; 491 } 492 493 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 494 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 495 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 496 &ring->data_dmat); 497 if (error != 0) { 498 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 499 goto fail; 500 } 501 502 for (i = 0; i < count; i++) { 503 error = bus_dmamap_create(ring->data_dmat, 0, 504 &ring->data[i].map); 505 if (error != 0) { 506 device_printf(sc->sc_dev, "could not create DMA map\n"); 507 goto fail; 508 } 509 } 510 511 return 0; 512 513 fail: rt2560_free_tx_ring(sc, ring); 514 return error; 515 } 516 517 static void 518 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 519 { 520 struct rt2560_tx_desc *desc; 521 struct rt2560_tx_data *data; 522 int i; 523 524 for (i = 0; i < ring->count; i++) { 525 desc = &ring->desc[i]; 526 data = &ring->data[i]; 527 528 if (data->m != NULL) { 529 bus_dmamap_sync(ring->data_dmat, data->map, 530 BUS_DMASYNC_POSTWRITE); 531 bus_dmamap_unload(ring->data_dmat, data->map); 532 m_freem(data->m); 533 data->m = NULL; 534 } 535 536 if (data->ni != NULL) { 537 ieee80211_free_node(data->ni); 538 data->ni = NULL; 539 } 540 541 desc->flags = 0; 542 } 543 544 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 545 546 ring->queued = 0; 547 ring->cur = ring->next = 0; 548 ring->cur_encrypt = ring->next_encrypt = 0; 549 } 550 551 static void 552 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 553 { 554 struct rt2560_tx_data *data; 555 int i; 556 557 if (ring->desc != NULL) { 558 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 559 BUS_DMASYNC_POSTWRITE); 560 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 561 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 562 } 563 564 if (ring->desc_dmat != NULL) 565 bus_dma_tag_destroy(ring->desc_dmat); 566 567 if (ring->data != NULL) { 568 for (i = 0; i < ring->count; i++) { 569 data = &ring->data[i]; 570 571 if (data->m != NULL) { 572 bus_dmamap_sync(ring->data_dmat, data->map, 573 BUS_DMASYNC_POSTWRITE); 574 bus_dmamap_unload(ring->data_dmat, data->map); 575 m_freem(data->m); 576 } 577 578 if (data->ni != NULL) 579 ieee80211_free_node(data->ni); 580 581 if (data->map != NULL) 582 bus_dmamap_destroy(ring->data_dmat, data->map); 583 } 584 585 free(ring->data, M_DEVBUF); 586 } 587 588 if (ring->data_dmat != NULL) 589 bus_dma_tag_destroy(ring->data_dmat); 590 } 591 592 static int 593 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 594 int count) 595 { 596 struct rt2560_rx_desc *desc; 597 struct rt2560_rx_data *data; 598 bus_addr_t physaddr; 599 int i, error; 600 601 ring->count = count; 602 ring->cur = ring->next = 0; 603 ring->cur_decrypt = 0; 604 605 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 606 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 607 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 608 0, NULL, NULL, &ring->desc_dmat); 609 if (error != 0) { 610 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 611 goto fail; 612 } 613 614 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 615 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 616 if (error != 0) { 617 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 618 goto fail; 619 } 620 621 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 622 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 623 0); 624 if (error != 0) { 625 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 626 goto fail; 627 } 628 629 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 630 M_NOWAIT | M_ZERO); 631 if (ring->data == NULL) { 632 device_printf(sc->sc_dev, "could not allocate soft data\n"); 633 error = ENOMEM; 634 goto fail; 635 } 636 637 /* 638 * Pre-allocate Rx buffers and populate Rx ring. 639 */ 640 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 641 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 642 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 643 if (error != 0) { 644 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 645 goto fail; 646 } 647 648 for (i = 0; i < count; i++) { 649 desc = &sc->rxq.desc[i]; 650 data = &sc->rxq.data[i]; 651 652 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not create DMA map\n"); 655 goto fail; 656 } 657 658 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 659 if (data->m == NULL) { 660 device_printf(sc->sc_dev, 661 "could not allocate rx mbuf\n"); 662 error = ENOMEM; 663 goto fail; 664 } 665 666 error = bus_dmamap_load(ring->data_dmat, data->map, 667 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 668 &physaddr, 0); 669 if (error != 0) { 670 device_printf(sc->sc_dev, 671 "could not load rx buf DMA map"); 672 goto fail; 673 } 674 675 desc->flags = htole32(RT2560_RX_BUSY); 676 desc->physaddr = htole32(physaddr); 677 } 678 679 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 680 681 return 0; 682 683 fail: rt2560_free_rx_ring(sc, ring); 684 return error; 685 } 686 687 static void 688 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 689 { 690 int i; 691 692 for (i = 0; i < ring->count; i++) { 693 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 694 ring->data[i].drop = 0; 695 } 696 697 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 698 699 ring->cur = ring->next = 0; 700 ring->cur_decrypt = 0; 701 } 702 703 static void 704 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 705 { 706 struct rt2560_rx_data *data; 707 int i; 708 709 if (ring->desc != NULL) { 710 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 711 BUS_DMASYNC_POSTWRITE); 712 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 713 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 714 } 715 716 if (ring->desc_dmat != NULL) 717 bus_dma_tag_destroy(ring->desc_dmat); 718 719 if (ring->data != NULL) { 720 for (i = 0; i < ring->count; i++) { 721 data = &ring->data[i]; 722 723 if (data->m != NULL) { 724 bus_dmamap_sync(ring->data_dmat, data->map, 725 BUS_DMASYNC_POSTREAD); 726 bus_dmamap_unload(ring->data_dmat, data->map); 727 m_freem(data->m); 728 } 729 730 if (data->map != NULL) 731 bus_dmamap_destroy(ring->data_dmat, data->map); 732 } 733 734 free(ring->data, M_DEVBUF); 735 } 736 737 if (ring->data_dmat != NULL) 738 bus_dma_tag_destroy(ring->data_dmat); 739 } 740 741 static int 742 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 743 { 744 struct rt2560_vap *rvp = RT2560_VAP(vap); 745 struct rt2560_softc *sc = vap->iv_ic->ic_softc; 746 int error; 747 748 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 749 /* abort TSF synchronization */ 750 RAL_WRITE(sc, RT2560_CSR14, 0); 751 752 /* turn association led off */ 753 rt2560_update_led(sc, 0, 0); 754 } 755 756 error = rvp->ral_newstate(vap, nstate, arg); 757 758 if (error == 0 && nstate == IEEE80211_S_RUN) { 759 struct ieee80211_node *ni = vap->iv_bss; 760 struct mbuf *m; 761 762 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 763 rt2560_update_plcp(sc); 764 rt2560_set_basicrates(sc, &ni->ni_rates); 765 rt2560_set_bssid(sc, ni->ni_bssid); 766 } 767 768 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 769 vap->iv_opmode == IEEE80211_M_IBSS || 770 vap->iv_opmode == IEEE80211_M_MBSS) { 771 m = ieee80211_beacon_alloc(ni); 772 if (m == NULL) { 773 device_printf(sc->sc_dev, 774 "could not allocate beacon\n"); 775 return ENOBUFS; 776 } 777 ieee80211_ref_node(ni); 778 error = rt2560_tx_bcn(sc, m, ni); 779 if (error != 0) 780 return error; 781 } 782 783 /* turn association led on */ 784 rt2560_update_led(sc, 1, 0); 785 786 if (vap->iv_opmode != IEEE80211_M_MONITOR) 787 rt2560_enable_tsf_sync(sc); 788 else 789 rt2560_enable_tsf(sc); 790 } 791 return error; 792 } 793 794 /* 795 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 796 * 93C66). 797 */ 798 static uint16_t 799 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 800 { 801 uint32_t tmp; 802 uint16_t val; 803 int n; 804 805 /* clock C once before the first command */ 806 RT2560_EEPROM_CTL(sc, 0); 807 808 RT2560_EEPROM_CTL(sc, RT2560_S); 809 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 810 RT2560_EEPROM_CTL(sc, RT2560_S); 811 812 /* write start bit (1) */ 813 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 814 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 815 816 /* write READ opcode (10) */ 817 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 818 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 819 RT2560_EEPROM_CTL(sc, RT2560_S); 820 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 821 822 /* write address (A5-A0 or A7-A0) */ 823 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 824 for (; n >= 0; n--) { 825 RT2560_EEPROM_CTL(sc, RT2560_S | 826 (((addr >> n) & 1) << RT2560_SHIFT_D)); 827 RT2560_EEPROM_CTL(sc, RT2560_S | 828 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 829 } 830 831 RT2560_EEPROM_CTL(sc, RT2560_S); 832 833 /* read data Q15-Q0 */ 834 val = 0; 835 for (n = 15; n >= 0; n--) { 836 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 837 tmp = RAL_READ(sc, RT2560_CSR21); 838 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 839 RT2560_EEPROM_CTL(sc, RT2560_S); 840 } 841 842 RT2560_EEPROM_CTL(sc, 0); 843 844 /* clear Chip Select and clock C */ 845 RT2560_EEPROM_CTL(sc, RT2560_S); 846 RT2560_EEPROM_CTL(sc, 0); 847 RT2560_EEPROM_CTL(sc, RT2560_C); 848 849 return val; 850 } 851 852 /* 853 * Some frames were processed by the hardware cipher engine and are ready for 854 * transmission. 855 */ 856 static void 857 rt2560_encryption_intr(struct rt2560_softc *sc) 858 { 859 struct rt2560_tx_desc *desc; 860 int hw; 861 862 /* retrieve last descriptor index processed by cipher engine */ 863 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 864 hw /= RT2560_TX_DESC_SIZE; 865 866 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 867 BUS_DMASYNC_POSTREAD); 868 869 while (sc->txq.next_encrypt != hw) { 870 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 871 printf("hw encrypt %d, cur_encrypt %d\n", hw, 872 sc->txq.cur_encrypt); 873 break; 874 } 875 876 desc = &sc->txq.desc[sc->txq.next_encrypt]; 877 878 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 879 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 880 break; 881 882 /* for TKIP, swap eiv field to fix a bug in ASIC */ 883 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 884 RT2560_TX_CIPHER_TKIP) 885 desc->eiv = bswap32(desc->eiv); 886 887 /* mark the frame ready for transmission */ 888 desc->flags |= htole32(RT2560_TX_VALID); 889 desc->flags |= htole32(RT2560_TX_BUSY); 890 891 DPRINTFN(sc, 15, "encryption done idx=%u\n", 892 sc->txq.next_encrypt); 893 894 sc->txq.next_encrypt = 895 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 896 } 897 898 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 899 BUS_DMASYNC_PREWRITE); 900 901 /* kick Tx */ 902 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 903 } 904 905 static void 906 rt2560_tx_intr(struct rt2560_softc *sc) 907 { 908 struct ieee80211_ratectl_tx_status *txs = &sc->sc_txs; 909 struct rt2560_tx_desc *desc; 910 struct rt2560_tx_data *data; 911 struct mbuf *m; 912 struct ieee80211_node *ni; 913 uint32_t flags; 914 int status; 915 916 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 917 BUS_DMASYNC_POSTREAD); 918 919 txs->flags = IEEE80211_RATECTL_STATUS_LONG_RETRY; 920 for (;;) { 921 desc = &sc->txq.desc[sc->txq.next]; 922 data = &sc->txq.data[sc->txq.next]; 923 924 flags = le32toh(desc->flags); 925 if ((flags & RT2560_TX_BUSY) || 926 (flags & RT2560_TX_CIPHER_BUSY) || 927 !(flags & RT2560_TX_VALID)) 928 break; 929 930 m = data->m; 931 ni = data->ni; 932 933 switch (flags & RT2560_TX_RESULT_MASK) { 934 case RT2560_TX_SUCCESS: 935 txs->status = IEEE80211_RATECTL_TX_SUCCESS; 936 txs->long_retries = 0; 937 938 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 939 if (data->rix != IEEE80211_FIXED_RATE_NONE) 940 ieee80211_ratectl_tx_complete(ni, txs); 941 status = 0; 942 break; 943 944 case RT2560_TX_SUCCESS_RETRY: 945 txs->status = IEEE80211_RATECTL_TX_SUCCESS; 946 txs->long_retries = RT2560_TX_RETRYCNT(flags); 947 948 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 949 txs->long_retries); 950 if (data->rix != IEEE80211_FIXED_RATE_NONE) 951 ieee80211_ratectl_tx_complete(ni, txs); 952 status = 0; 953 break; 954 955 case RT2560_TX_FAIL_RETRY: 956 txs->status = IEEE80211_RATECTL_TX_FAIL_LONG; 957 txs->long_retries = RT2560_TX_RETRYCNT(flags); 958 959 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 960 txs->long_retries); 961 if (data->rix != IEEE80211_FIXED_RATE_NONE) 962 ieee80211_ratectl_tx_complete(ni, txs); 963 status = 1; 964 break; 965 966 case RT2560_TX_FAIL_INVALID: 967 case RT2560_TX_FAIL_OTHER: 968 default: 969 device_printf(sc->sc_dev, "sending data frame failed " 970 "0x%08x\n", flags); 971 status = 1; 972 } 973 974 bus_dmamap_sync(sc->txq.data_dmat, data->map, 975 BUS_DMASYNC_POSTWRITE); 976 bus_dmamap_unload(sc->txq.data_dmat, data->map); 977 978 ieee80211_tx_complete(ni, m, status); 979 data->ni = NULL; 980 data->m = NULL; 981 982 /* descriptor is no longer valid */ 983 desc->flags &= ~htole32(RT2560_TX_VALID); 984 985 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 986 987 sc->txq.queued--; 988 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 989 } 990 991 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 992 BUS_DMASYNC_PREWRITE); 993 994 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 995 sc->sc_tx_timer = 0; 996 997 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) 998 rt2560_start(sc); 999 } 1000 1001 static void 1002 rt2560_prio_intr(struct rt2560_softc *sc) 1003 { 1004 struct rt2560_tx_desc *desc; 1005 struct rt2560_tx_data *data; 1006 struct ieee80211_node *ni; 1007 struct mbuf *m; 1008 int flags; 1009 1010 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1011 BUS_DMASYNC_POSTREAD); 1012 1013 for (;;) { 1014 desc = &sc->prioq.desc[sc->prioq.next]; 1015 data = &sc->prioq.data[sc->prioq.next]; 1016 1017 flags = le32toh(desc->flags); 1018 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1019 break; 1020 1021 switch (flags & RT2560_TX_RESULT_MASK) { 1022 case RT2560_TX_SUCCESS: 1023 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1024 break; 1025 1026 case RT2560_TX_SUCCESS_RETRY: 1027 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1028 (flags >> 5) & 0x7); 1029 break; 1030 1031 case RT2560_TX_FAIL_RETRY: 1032 DPRINTFN(sc, 9, "%s\n", 1033 "sending mgt frame failed (too much retries)"); 1034 break; 1035 1036 case RT2560_TX_FAIL_INVALID: 1037 case RT2560_TX_FAIL_OTHER: 1038 default: 1039 device_printf(sc->sc_dev, "sending mgt frame failed " 1040 "0x%08x\n", flags); 1041 break; 1042 } 1043 1044 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1045 BUS_DMASYNC_POSTWRITE); 1046 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1047 1048 m = data->m; 1049 data->m = NULL; 1050 ni = data->ni; 1051 data->ni = NULL; 1052 1053 /* descriptor is no longer valid */ 1054 desc->flags &= ~htole32(RT2560_TX_VALID); 1055 1056 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1057 1058 sc->prioq.queued--; 1059 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1060 1061 if (m->m_flags & M_TXCB) 1062 ieee80211_process_callback(ni, m, 1063 (flags & RT2560_TX_RESULT_MASK) &~ 1064 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1065 m_freem(m); 1066 ieee80211_free_node(ni); 1067 } 1068 1069 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1070 BUS_DMASYNC_PREWRITE); 1071 1072 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1073 sc->sc_tx_timer = 0; 1074 1075 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) 1076 rt2560_start(sc); 1077 } 1078 1079 /* 1080 * Some frames were processed by the hardware cipher engine and are ready for 1081 * handoff to the IEEE802.11 layer. 1082 */ 1083 static void 1084 rt2560_decryption_intr(struct rt2560_softc *sc) 1085 { 1086 struct ieee80211com *ic = &sc->sc_ic; 1087 struct rt2560_rx_desc *desc; 1088 struct rt2560_rx_data *data; 1089 bus_addr_t physaddr; 1090 struct ieee80211_frame *wh; 1091 struct ieee80211_node *ni; 1092 struct mbuf *mnew, *m; 1093 int hw, error; 1094 int8_t rssi, nf; 1095 1096 /* retrieve last descriptor index processed by cipher engine */ 1097 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1098 hw /= RT2560_RX_DESC_SIZE; 1099 1100 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1101 BUS_DMASYNC_POSTREAD); 1102 1103 for (; sc->rxq.cur_decrypt != hw;) { 1104 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1105 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1106 1107 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1108 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1109 break; 1110 1111 if (data->drop) { 1112 counter_u64_add(ic->ic_ierrors, 1); 1113 goto skip; 1114 } 1115 1116 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1117 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1118 counter_u64_add(ic->ic_ierrors, 1); 1119 goto skip; 1120 } 1121 1122 /* 1123 * Try to allocate a new mbuf for this ring element and load it 1124 * before processing the current mbuf. If the ring element 1125 * cannot be loaded, drop the received packet and reuse the old 1126 * mbuf. In the unlikely case that the old mbuf can't be 1127 * reloaded either, explicitly panic. 1128 */ 1129 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1130 if (mnew == NULL) { 1131 counter_u64_add(ic->ic_ierrors, 1); 1132 goto skip; 1133 } 1134 1135 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1136 BUS_DMASYNC_POSTREAD); 1137 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1138 1139 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1140 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1141 &physaddr, 0); 1142 if (error != 0) { 1143 m_freem(mnew); 1144 1145 /* try to reload the old mbuf */ 1146 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1147 mtod(data->m, void *), MCLBYTES, 1148 rt2560_dma_map_addr, &physaddr, 0); 1149 if (error != 0) { 1150 /* very unlikely that it will fail... */ 1151 panic("%s: could not load old rx mbuf", 1152 device_get_name(sc->sc_dev)); 1153 } 1154 counter_u64_add(ic->ic_ierrors, 1); 1155 goto skip; 1156 } 1157 1158 /* 1159 * New mbuf successfully loaded, update Rx ring and continue 1160 * processing. 1161 */ 1162 m = data->m; 1163 data->m = mnew; 1164 desc->physaddr = htole32(physaddr); 1165 1166 /* finalize mbuf */ 1167 m->m_pkthdr.len = m->m_len = 1168 (le32toh(desc->flags) >> 16) & 0xfff; 1169 1170 rssi = RT2560_RSSI(sc, desc->rssi); 1171 nf = RT2560_NOISE_FLOOR; 1172 if (ieee80211_radiotap_active(ic)) { 1173 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1174 uint32_t tsf_lo, tsf_hi; 1175 1176 /* get timestamp (low and high 32 bits) */ 1177 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1178 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1179 1180 tap->wr_tsf = 1181 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1182 tap->wr_flags = 0; 1183 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1184 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1185 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1186 tap->wr_antenna = sc->rx_ant; 1187 tap->wr_antsignal = nf + rssi; 1188 tap->wr_antnoise = nf; 1189 } 1190 1191 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1192 RAL_UNLOCK(sc); 1193 wh = mtod(m, struct ieee80211_frame *); 1194 ni = ieee80211_find_rxnode(ic, 1195 (struct ieee80211_frame_min *)wh); 1196 if (ni != NULL) { 1197 (void) ieee80211_input(ni, m, rssi, nf); 1198 ieee80211_free_node(ni); 1199 } else 1200 (void) ieee80211_input_all(ic, m, rssi, nf); 1201 1202 RAL_LOCK(sc); 1203 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1204 skip: desc->flags = htole32(RT2560_RX_BUSY); 1205 1206 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1207 1208 sc->rxq.cur_decrypt = 1209 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1210 } 1211 1212 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1213 BUS_DMASYNC_PREWRITE); 1214 } 1215 1216 /* 1217 * Some frames were received. Pass them to the hardware cipher engine before 1218 * sending them to the 802.11 layer. 1219 */ 1220 static void 1221 rt2560_rx_intr(struct rt2560_softc *sc) 1222 { 1223 struct rt2560_rx_desc *desc; 1224 struct rt2560_rx_data *data; 1225 1226 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1227 BUS_DMASYNC_POSTREAD); 1228 1229 for (;;) { 1230 desc = &sc->rxq.desc[sc->rxq.cur]; 1231 data = &sc->rxq.data[sc->rxq.cur]; 1232 1233 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1234 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1235 break; 1236 1237 data->drop = 0; 1238 1239 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1240 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1241 /* 1242 * This should not happen since we did not request 1243 * to receive those frames when we filled RXCSR0. 1244 */ 1245 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1246 le32toh(desc->flags)); 1247 data->drop = 1; 1248 } 1249 1250 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1251 DPRINTFN(sc, 5, "%s\n", "bad length"); 1252 data->drop = 1; 1253 } 1254 1255 /* mark the frame for decryption */ 1256 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1257 1258 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1259 1260 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1261 } 1262 1263 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1264 BUS_DMASYNC_PREWRITE); 1265 1266 /* kick decrypt */ 1267 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1268 } 1269 1270 static void 1271 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1272 { 1273 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 1274 1275 setbit(bo->bo_flags, item); 1276 } 1277 1278 /* 1279 * This function is called periodically in IBSS mode when a new beacon must be 1280 * sent out. 1281 */ 1282 static void 1283 rt2560_beacon_expire(struct rt2560_softc *sc) 1284 { 1285 struct ieee80211com *ic = &sc->sc_ic; 1286 struct rt2560_tx_data *data; 1287 1288 if (ic->ic_opmode != IEEE80211_M_IBSS && 1289 ic->ic_opmode != IEEE80211_M_HOSTAP && 1290 ic->ic_opmode != IEEE80211_M_MBSS) 1291 return; 1292 1293 data = &sc->bcnq.data[sc->bcnq.next]; 1294 /* 1295 * Don't send beacon if bsschan isn't set 1296 */ 1297 if (data->ni == NULL) 1298 return; 1299 1300 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1301 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1302 1303 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1304 ieee80211_beacon_update(data->ni, data->m, 1); 1305 1306 rt2560_tx_bcn(sc, data->m, data->ni); 1307 1308 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1309 1310 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1311 } 1312 1313 /* ARGSUSED */ 1314 static void 1315 rt2560_wakeup_expire(struct rt2560_softc *sc) 1316 { 1317 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1318 } 1319 1320 void 1321 rt2560_intr(void *arg) 1322 { 1323 struct rt2560_softc *sc = arg; 1324 uint32_t r; 1325 1326 RAL_LOCK(sc); 1327 1328 /* disable interrupts */ 1329 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1330 1331 /* don't re-enable interrupts if we're shutting down */ 1332 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 1333 RAL_UNLOCK(sc); 1334 return; 1335 } 1336 1337 r = RAL_READ(sc, RT2560_CSR7); 1338 RAL_WRITE(sc, RT2560_CSR7, r); 1339 1340 if (r & RT2560_BEACON_EXPIRE) 1341 rt2560_beacon_expire(sc); 1342 1343 if (r & RT2560_WAKEUP_EXPIRE) 1344 rt2560_wakeup_expire(sc); 1345 1346 if (r & RT2560_ENCRYPTION_DONE) 1347 rt2560_encryption_intr(sc); 1348 1349 if (r & RT2560_TX_DONE) 1350 rt2560_tx_intr(sc); 1351 1352 if (r & RT2560_PRIO_DONE) 1353 rt2560_prio_intr(sc); 1354 1355 if (r & RT2560_DECRYPTION_DONE) 1356 rt2560_decryption_intr(sc); 1357 1358 if (r & RT2560_RX_DONE) { 1359 rt2560_rx_intr(sc); 1360 rt2560_encryption_intr(sc); 1361 } 1362 1363 /* re-enable interrupts */ 1364 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1365 1366 RAL_UNLOCK(sc); 1367 } 1368 1369 #define RAL_SIFS 10 /* us */ 1370 1371 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1372 1373 static uint8_t 1374 rt2560_plcp_signal(int rate) 1375 { 1376 switch (rate) { 1377 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1378 case 12: return 0xb; 1379 case 18: return 0xf; 1380 case 24: return 0xa; 1381 case 36: return 0xe; 1382 case 48: return 0x9; 1383 case 72: return 0xd; 1384 case 96: return 0x8; 1385 case 108: return 0xc; 1386 1387 /* CCK rates (NB: not IEEE std, device-specific) */ 1388 case 2: return 0x0; 1389 case 4: return 0x1; 1390 case 11: return 0x2; 1391 case 22: return 0x3; 1392 } 1393 return 0xff; /* XXX unsupported/unknown rate */ 1394 } 1395 1396 static void 1397 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1398 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1399 { 1400 struct ieee80211com *ic = &sc->sc_ic; 1401 uint16_t plcp_length; 1402 int remainder; 1403 1404 desc->flags = htole32(flags); 1405 desc->flags |= htole32(len << 16); 1406 1407 desc->physaddr = htole32(physaddr); 1408 desc->wme = htole16( 1409 RT2560_AIFSN(2) | 1410 RT2560_LOGCWMIN(3) | 1411 RT2560_LOGCWMAX(8)); 1412 1413 /* setup PLCP fields */ 1414 desc->plcp_signal = rt2560_plcp_signal(rate); 1415 desc->plcp_service = 4; 1416 1417 len += IEEE80211_CRC_LEN; 1418 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1419 desc->flags |= htole32(RT2560_TX_OFDM); 1420 1421 plcp_length = len & 0xfff; 1422 desc->plcp_length_hi = plcp_length >> 6; 1423 desc->plcp_length_lo = plcp_length & 0x3f; 1424 } else { 1425 plcp_length = howmany(16 * len, rate); 1426 if (rate == 22) { 1427 remainder = (16 * len) % 22; 1428 if (remainder != 0 && remainder < 7) 1429 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1430 } 1431 desc->plcp_length_hi = plcp_length >> 8; 1432 desc->plcp_length_lo = plcp_length & 0xff; 1433 1434 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1435 desc->plcp_signal |= 0x08; 1436 } 1437 1438 if (!encrypt) 1439 desc->flags |= htole32(RT2560_TX_VALID); 1440 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1441 : htole32(RT2560_TX_BUSY); 1442 } 1443 1444 static int 1445 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1446 struct ieee80211_node *ni) 1447 { 1448 struct ieee80211vap *vap = ni->ni_vap; 1449 struct rt2560_tx_desc *desc; 1450 struct rt2560_tx_data *data; 1451 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1452 int nsegs, rate, error; 1453 1454 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1455 data = &sc->bcnq.data[sc->bcnq.cur]; 1456 1457 /* XXX maybe a separate beacon rate? */ 1458 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1459 1460 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1461 segs, &nsegs, BUS_DMA_NOWAIT); 1462 if (error != 0) { 1463 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1464 error); 1465 m_freem(m0); 1466 return error; 1467 } 1468 1469 if (ieee80211_radiotap_active_vap(vap)) { 1470 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1471 1472 tap->wt_flags = 0; 1473 tap->wt_rate = rate; 1474 tap->wt_antenna = sc->tx_ant; 1475 1476 ieee80211_radiotap_tx(vap, m0); 1477 } 1478 1479 data->m = m0; 1480 data->ni = ni; 1481 1482 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1483 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1484 1485 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1486 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1487 1488 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1489 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1490 BUS_DMASYNC_PREWRITE); 1491 1492 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1493 1494 return 0; 1495 } 1496 1497 static int 1498 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1499 struct ieee80211_node *ni) 1500 { 1501 struct ieee80211vap *vap = ni->ni_vap; 1502 struct ieee80211com *ic = ni->ni_ic; 1503 struct rt2560_tx_desc *desc; 1504 struct rt2560_tx_data *data; 1505 struct ieee80211_frame *wh; 1506 struct ieee80211_key *k; 1507 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1508 uint16_t dur; 1509 uint32_t flags = 0; 1510 int nsegs, rate, error; 1511 1512 desc = &sc->prioq.desc[sc->prioq.cur]; 1513 data = &sc->prioq.data[sc->prioq.cur]; 1514 1515 rate = ni->ni_txparms->mgmtrate; 1516 1517 wh = mtod(m0, struct ieee80211_frame *); 1518 1519 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1520 k = ieee80211_crypto_encap(ni, m0); 1521 if (k == NULL) { 1522 m_freem(m0); 1523 return ENOBUFS; 1524 } 1525 } 1526 1527 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1528 segs, &nsegs, 0); 1529 if (error != 0) { 1530 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1531 error); 1532 m_freem(m0); 1533 return error; 1534 } 1535 1536 if (ieee80211_radiotap_active_vap(vap)) { 1537 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1538 1539 tap->wt_flags = 0; 1540 tap->wt_rate = rate; 1541 tap->wt_antenna = sc->tx_ant; 1542 1543 ieee80211_radiotap_tx(vap, m0); 1544 } 1545 1546 data->m = m0; 1547 data->ni = ni; 1548 /* management frames are not taken into account for amrr */ 1549 data->rix = IEEE80211_FIXED_RATE_NONE; 1550 1551 wh = mtod(m0, struct ieee80211_frame *); 1552 1553 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1554 flags |= RT2560_TX_ACK; 1555 1556 dur = ieee80211_ack_duration(ic->ic_rt, 1557 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1558 *(uint16_t *)wh->i_dur = htole16(dur); 1559 1560 /* tell hardware to add timestamp for probe responses */ 1561 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1562 IEEE80211_FC0_TYPE_MGT && 1563 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1564 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1565 flags |= RT2560_TX_TIMESTAMP; 1566 } 1567 1568 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1569 segs->ds_addr); 1570 1571 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1572 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1573 BUS_DMASYNC_PREWRITE); 1574 1575 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1576 m0->m_pkthdr.len, sc->prioq.cur, rate); 1577 1578 /* kick prio */ 1579 sc->prioq.queued++; 1580 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1581 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1582 1583 return 0; 1584 } 1585 1586 static int 1587 rt2560_sendprot(struct rt2560_softc *sc, 1588 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1589 { 1590 struct ieee80211com *ic = ni->ni_ic; 1591 struct rt2560_tx_desc *desc; 1592 struct rt2560_tx_data *data; 1593 struct mbuf *mprot; 1594 int protrate, flags, error; 1595 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1596 int nsegs; 1597 1598 mprot = ieee80211_alloc_prot(ni, m, rate, prot); 1599 if (mprot == NULL) { 1600 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1); 1601 device_printf(sc->sc_dev, 1602 "could not allocate mbuf for protection mode %d\n", prot); 1603 return ENOBUFS; 1604 } 1605 1606 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1607 data = &sc->txq.data[sc->txq.cur_encrypt]; 1608 1609 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1610 mprot, segs, &nsegs, 0); 1611 if (error != 0) { 1612 device_printf(sc->sc_dev, 1613 "could not map mbuf (error %d)\n", error); 1614 m_freem(mprot); 1615 return error; 1616 } 1617 1618 data->m = mprot; 1619 data->ni = ieee80211_ref_node(ni); 1620 /* ctl frames are not taken into account for amrr */ 1621 data->rix = IEEE80211_FIXED_RATE_NONE; 1622 1623 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1624 flags = RT2560_TX_MORE_FRAG; 1625 if (prot == IEEE80211_PROT_RTSCTS) 1626 flags |= RT2560_TX_ACK; 1627 1628 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1629 segs->ds_addr); 1630 1631 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1632 BUS_DMASYNC_PREWRITE); 1633 1634 sc->txq.queued++; 1635 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1636 1637 return 0; 1638 } 1639 1640 static int 1641 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1642 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1643 { 1644 struct ieee80211vap *vap = ni->ni_vap; 1645 struct ieee80211com *ic = ni->ni_ic; 1646 struct rt2560_tx_desc *desc; 1647 struct rt2560_tx_data *data; 1648 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1649 uint32_t flags; 1650 int nsegs, rate, error; 1651 1652 desc = &sc->prioq.desc[sc->prioq.cur]; 1653 data = &sc->prioq.data[sc->prioq.cur]; 1654 1655 rate = params->ibp_rate0; 1656 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1657 /* XXX fall back to mcast/mgmt rate? */ 1658 m_freem(m0); 1659 return EINVAL; 1660 } 1661 1662 flags = 0; 1663 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1664 flags |= RT2560_TX_ACK; 1665 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1666 error = rt2560_sendprot(sc, m0, ni, 1667 params->ibp_flags & IEEE80211_BPF_RTS ? 1668 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1669 rate); 1670 if (error) { 1671 m_freem(m0); 1672 return error; 1673 } 1674 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1675 } 1676 1677 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1678 segs, &nsegs, 0); 1679 if (error != 0) { 1680 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1681 error); 1682 m_freem(m0); 1683 return error; 1684 } 1685 1686 if (ieee80211_radiotap_active_vap(vap)) { 1687 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1688 1689 tap->wt_flags = 0; 1690 tap->wt_rate = rate; 1691 tap->wt_antenna = sc->tx_ant; 1692 1693 ieee80211_radiotap_tx(ni->ni_vap, m0); 1694 } 1695 1696 data->m = m0; 1697 data->ni = ni; 1698 1699 /* XXX need to setup descriptor ourself */ 1700 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1701 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1702 segs->ds_addr); 1703 1704 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1705 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1706 BUS_DMASYNC_PREWRITE); 1707 1708 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1709 m0->m_pkthdr.len, sc->prioq.cur, rate); 1710 1711 /* kick prio */ 1712 sc->prioq.queued++; 1713 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1714 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1715 1716 return 0; 1717 } 1718 1719 static int 1720 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1721 struct ieee80211_node *ni) 1722 { 1723 struct ieee80211vap *vap = ni->ni_vap; 1724 struct ieee80211com *ic = ni->ni_ic; 1725 struct rt2560_tx_desc *desc; 1726 struct rt2560_tx_data *data; 1727 struct ieee80211_frame *wh; 1728 const struct ieee80211_txparam *tp = ni->ni_txparms; 1729 struct ieee80211_key *k; 1730 struct mbuf *mnew; 1731 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1732 uint16_t dur; 1733 uint32_t flags; 1734 int nsegs, rate, error; 1735 1736 wh = mtod(m0, struct ieee80211_frame *); 1737 1738 if (m0->m_flags & M_EAPOL) { 1739 rate = tp->mgmtrate; 1740 } else if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1741 rate = tp->mcastrate; 1742 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1743 rate = tp->ucastrate; 1744 } else { 1745 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1746 rate = ni->ni_txrate; 1747 } 1748 1749 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1750 k = ieee80211_crypto_encap(ni, m0); 1751 if (k == NULL) { 1752 m_freem(m0); 1753 return ENOBUFS; 1754 } 1755 1756 /* packet header may have moved, reset our local pointer */ 1757 wh = mtod(m0, struct ieee80211_frame *); 1758 } 1759 1760 flags = 0; 1761 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1762 int prot = IEEE80211_PROT_NONE; 1763 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1764 prot = IEEE80211_PROT_RTSCTS; 1765 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1766 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1767 prot = ic->ic_protmode; 1768 if (prot != IEEE80211_PROT_NONE) { 1769 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1770 if (error) { 1771 m_freem(m0); 1772 return error; 1773 } 1774 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1775 } 1776 } 1777 1778 data = &sc->txq.data[sc->txq.cur_encrypt]; 1779 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1780 1781 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1782 segs, &nsegs, 0); 1783 if (error != 0 && error != EFBIG) { 1784 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1785 error); 1786 m_freem(m0); 1787 return error; 1788 } 1789 if (error != 0) { 1790 mnew = m_defrag(m0, M_NOWAIT); 1791 if (mnew == NULL) { 1792 device_printf(sc->sc_dev, 1793 "could not defragment mbuf\n"); 1794 m_freem(m0); 1795 return ENOBUFS; 1796 } 1797 m0 = mnew; 1798 1799 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1800 m0, segs, &nsegs, 0); 1801 if (error != 0) { 1802 device_printf(sc->sc_dev, 1803 "could not map mbuf (error %d)\n", error); 1804 m_freem(m0); 1805 return error; 1806 } 1807 1808 /* packet header may have moved, reset our local pointer */ 1809 wh = mtod(m0, struct ieee80211_frame *); 1810 } 1811 1812 if (ieee80211_radiotap_active_vap(vap)) { 1813 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1814 1815 tap->wt_flags = 0; 1816 tap->wt_rate = rate; 1817 tap->wt_antenna = sc->tx_ant; 1818 1819 ieee80211_radiotap_tx(vap, m0); 1820 } 1821 1822 data->m = m0; 1823 data->ni = ni; 1824 1825 /* remember link conditions for rate adaptation algorithm */ 1826 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1827 data->rix = ni->ni_txrate; 1828 /* XXX probably need last rssi value and not avg */ 1829 data->rssi = ic->ic_node_getrssi(ni); 1830 } else 1831 data->rix = IEEE80211_FIXED_RATE_NONE; 1832 1833 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1834 flags |= RT2560_TX_ACK; 1835 1836 dur = ieee80211_ack_duration(ic->ic_rt, 1837 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1838 *(uint16_t *)wh->i_dur = htole16(dur); 1839 } 1840 1841 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1842 segs->ds_addr); 1843 1844 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1845 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1846 BUS_DMASYNC_PREWRITE); 1847 1848 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1849 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1850 1851 /* kick encrypt */ 1852 sc->txq.queued++; 1853 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1854 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1855 1856 return 0; 1857 } 1858 1859 static int 1860 rt2560_transmit(struct ieee80211com *ic, struct mbuf *m) 1861 { 1862 struct rt2560_softc *sc = ic->ic_softc; 1863 int error; 1864 1865 RAL_LOCK(sc); 1866 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1867 RAL_UNLOCK(sc); 1868 return (ENXIO); 1869 } 1870 error = mbufq_enqueue(&sc->sc_snd, m); 1871 if (error) { 1872 RAL_UNLOCK(sc); 1873 return (error); 1874 } 1875 rt2560_start(sc); 1876 RAL_UNLOCK(sc); 1877 1878 return (0); 1879 } 1880 1881 static void 1882 rt2560_start(struct rt2560_softc *sc) 1883 { 1884 struct ieee80211_node *ni; 1885 struct mbuf *m; 1886 1887 RAL_LOCK_ASSERT(sc); 1888 1889 while (sc->txq.queued < RT2560_TX_RING_COUNT - 1 && 1890 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1891 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1892 if (rt2560_tx_data(sc, m, ni) != 0) { 1893 if_inc_counter(ni->ni_vap->iv_ifp, 1894 IFCOUNTER_OERRORS, 1); 1895 ieee80211_free_node(ni); 1896 break; 1897 } 1898 sc->sc_tx_timer = 5; 1899 } 1900 } 1901 1902 static void 1903 rt2560_watchdog(void *arg) 1904 { 1905 struct rt2560_softc *sc = arg; 1906 1907 RAL_LOCK_ASSERT(sc); 1908 1909 KASSERT(sc->sc_flags & RT2560_F_RUNNING, ("not running")); 1910 1911 if (sc->sc_invalid) /* card ejected */ 1912 return; 1913 1914 rt2560_encryption_intr(sc); 1915 rt2560_tx_intr(sc); 1916 1917 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1918 device_printf(sc->sc_dev, "device timeout\n"); 1919 rt2560_init_locked(sc); 1920 counter_u64_add(sc->sc_ic.ic_oerrors, 1); 1921 /* NB: callout is reset in rt2560_init() */ 1922 return; 1923 } 1924 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1925 } 1926 1927 static void 1928 rt2560_parent(struct ieee80211com *ic) 1929 { 1930 struct rt2560_softc *sc = ic->ic_softc; 1931 int startall = 0; 1932 1933 RAL_LOCK(sc); 1934 if (ic->ic_nrunning > 0) { 1935 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1936 rt2560_init_locked(sc); 1937 startall = 1; 1938 } else 1939 rt2560_update_promisc(ic); 1940 } else if (sc->sc_flags & RT2560_F_RUNNING) 1941 rt2560_stop_locked(sc); 1942 RAL_UNLOCK(sc); 1943 if (startall) 1944 ieee80211_start_all(ic); 1945 } 1946 1947 static void 1948 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 1949 { 1950 uint32_t tmp; 1951 int ntries; 1952 1953 for (ntries = 0; ntries < 100; ntries++) { 1954 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1955 break; 1956 DELAY(1); 1957 } 1958 if (ntries == 100) { 1959 device_printf(sc->sc_dev, "could not write to BBP\n"); 1960 return; 1961 } 1962 1963 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 1964 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 1965 1966 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 1967 } 1968 1969 static uint8_t 1970 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 1971 { 1972 uint32_t val; 1973 int ntries; 1974 1975 for (ntries = 0; ntries < 100; ntries++) { 1976 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1977 break; 1978 DELAY(1); 1979 } 1980 if (ntries == 100) { 1981 device_printf(sc->sc_dev, "could not read from BBP\n"); 1982 return 0; 1983 } 1984 1985 val = RT2560_BBP_BUSY | reg << 8; 1986 RAL_WRITE(sc, RT2560_BBPCSR, val); 1987 1988 for (ntries = 0; ntries < 100; ntries++) { 1989 val = RAL_READ(sc, RT2560_BBPCSR); 1990 if (!(val & RT2560_BBP_BUSY)) 1991 return val & 0xff; 1992 DELAY(1); 1993 } 1994 1995 device_printf(sc->sc_dev, "could not read from BBP\n"); 1996 return 0; 1997 } 1998 1999 static void 2000 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2001 { 2002 uint32_t tmp; 2003 int ntries; 2004 2005 for (ntries = 0; ntries < 100; ntries++) { 2006 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2007 break; 2008 DELAY(1); 2009 } 2010 if (ntries == 100) { 2011 device_printf(sc->sc_dev, "could not write to RF\n"); 2012 return; 2013 } 2014 2015 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2016 (reg & 0x3); 2017 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2018 2019 /* remember last written value in sc */ 2020 sc->rf_regs[reg] = val; 2021 2022 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2023 } 2024 2025 static void 2026 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2027 { 2028 struct ieee80211com *ic = &sc->sc_ic; 2029 uint8_t power, tmp; 2030 u_int i, chan; 2031 2032 chan = ieee80211_chan2ieee(ic, c); 2033 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2034 2035 if (IEEE80211_IS_CHAN_2GHZ(c)) 2036 power = min(sc->txpow[chan - 1], 31); 2037 else 2038 power = 31; 2039 2040 /* adjust txpower using ifconfig settings */ 2041 power -= (100 - ic->ic_txpowlimit) / 8; 2042 2043 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2044 2045 switch (sc->rf_rev) { 2046 case RT2560_RF_2522: 2047 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2048 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2049 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2050 break; 2051 2052 case RT2560_RF_2523: 2053 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2054 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2055 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2056 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2057 break; 2058 2059 case RT2560_RF_2524: 2060 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2061 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2062 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2063 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2064 break; 2065 2066 case RT2560_RF_2525: 2067 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2068 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2069 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2070 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2071 2072 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2073 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2074 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2075 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2076 break; 2077 2078 case RT2560_RF_2525E: 2079 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2080 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2081 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2082 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2083 break; 2084 2085 case RT2560_RF_2526: 2086 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2087 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2088 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2089 2090 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2091 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2092 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2093 break; 2094 2095 /* dual-band RF */ 2096 case RT2560_RF_5222: 2097 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2098 2099 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2100 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2101 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2102 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2103 break; 2104 default: 2105 printf("unknown ral rev=%d\n", sc->rf_rev); 2106 } 2107 2108 /* XXX */ 2109 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2110 /* set Japan filter bit for channel 14 */ 2111 tmp = rt2560_bbp_read(sc, 70); 2112 2113 tmp &= ~RT2560_JAPAN_FILTER; 2114 if (chan == 14) 2115 tmp |= RT2560_JAPAN_FILTER; 2116 2117 rt2560_bbp_write(sc, 70, tmp); 2118 2119 /* clear CRC errors */ 2120 RAL_READ(sc, RT2560_CNT0); 2121 } 2122 } 2123 2124 static void 2125 rt2560_getradiocaps(struct ieee80211com *ic, 2126 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2127 { 2128 struct rt2560_softc *sc = ic->ic_softc; 2129 uint8_t bands[IEEE80211_MODE_BYTES]; 2130 2131 memset(bands, 0, sizeof(bands)); 2132 setbit(bands, IEEE80211_MODE_11B); 2133 setbit(bands, IEEE80211_MODE_11G); 2134 ieee80211_add_channels_default_2ghz(chans, maxchans, nchans, bands, 0); 2135 2136 if (sc->rf_rev == RT2560_RF_5222) { 2137 setbit(bands, IEEE80211_MODE_11A); 2138 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans, 2139 rt2560_chan_5ghz, nitems(rt2560_chan_5ghz), bands, 0); 2140 } 2141 } 2142 2143 static void 2144 rt2560_set_channel(struct ieee80211com *ic) 2145 { 2146 struct rt2560_softc *sc = ic->ic_softc; 2147 2148 RAL_LOCK(sc); 2149 rt2560_set_chan(sc, ic->ic_curchan); 2150 RAL_UNLOCK(sc); 2151 2152 } 2153 2154 #if 0 2155 /* 2156 * Disable RF auto-tuning. 2157 */ 2158 static void 2159 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2160 { 2161 uint32_t tmp; 2162 2163 if (sc->rf_rev != RT2560_RF_2523) { 2164 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2165 rt2560_rf_write(sc, RAL_RF1, tmp); 2166 } 2167 2168 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2169 rt2560_rf_write(sc, RAL_RF3, tmp); 2170 2171 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2172 } 2173 #endif 2174 2175 /* 2176 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2177 * synchronization. 2178 */ 2179 static void 2180 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2181 { 2182 struct ieee80211com *ic = &sc->sc_ic; 2183 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2184 uint16_t logcwmin, preload; 2185 uint32_t tmp; 2186 2187 /* first, disable TSF synchronization */ 2188 RAL_WRITE(sc, RT2560_CSR14, 0); 2189 2190 tmp = 16 * vap->iv_bss->ni_intval; 2191 RAL_WRITE(sc, RT2560_CSR12, tmp); 2192 2193 RAL_WRITE(sc, RT2560_CSR13, 0); 2194 2195 logcwmin = 5; 2196 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2197 tmp = logcwmin << 16 | preload; 2198 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2199 2200 /* finally, enable TSF synchronization */ 2201 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2202 if (ic->ic_opmode == IEEE80211_M_STA) 2203 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2204 else 2205 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2206 RT2560_ENABLE_BEACON_GENERATOR; 2207 RAL_WRITE(sc, RT2560_CSR14, tmp); 2208 2209 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2210 } 2211 2212 static void 2213 rt2560_enable_tsf(struct rt2560_softc *sc) 2214 { 2215 RAL_WRITE(sc, RT2560_CSR14, 0); 2216 RAL_WRITE(sc, RT2560_CSR14, 2217 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2218 } 2219 2220 static void 2221 rt2560_update_plcp(struct rt2560_softc *sc) 2222 { 2223 struct ieee80211com *ic = &sc->sc_ic; 2224 2225 /* no short preamble for 1Mbps */ 2226 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2227 2228 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2229 /* values taken from the reference driver */ 2230 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2231 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2232 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2233 } else { 2234 /* same values as above or'ed 0x8 */ 2235 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2236 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2237 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2238 } 2239 2240 DPRINTF(sc, "updating PLCP for %s preamble\n", 2241 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2242 } 2243 2244 /* 2245 * This function can be called by ieee80211_set_shortslottime(). Refer to 2246 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2247 */ 2248 static void 2249 rt2560_update_slot(struct ieee80211com *ic) 2250 { 2251 struct rt2560_softc *sc = ic->ic_softc; 2252 uint8_t slottime; 2253 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2254 uint32_t tmp; 2255 2256 #ifndef FORCE_SLOTTIME 2257 slottime = IEEE80211_GET_SLOTTIME(ic); 2258 #else 2259 /* 2260 * Setting slot time according to "short slot time" capability 2261 * in beacon/probe_resp seems to cause problem to acknowledge 2262 * certain AP's data frames transimitted at CCK/DS rates: the 2263 * problematic AP keeps retransmitting data frames, probably 2264 * because MAC level acks are not received by hardware. 2265 * So we cheat a little bit here by claiming we are capable of 2266 * "short slot time" but setting hardware slot time to the normal 2267 * slot time. ral(4) does not seem to have trouble to receive 2268 * frames transmitted using short slot time even if hardware 2269 * slot time is set to normal slot time. If we didn't use this 2270 * trick, we would have to claim that short slot time is not 2271 * supported; this would give relative poor RX performance 2272 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2273 * slot time. 2274 */ 2275 slottime = IEEE80211_DUR_SLOT; 2276 #endif 2277 2278 /* update the MAC slot boundaries */ 2279 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2280 tx_pifs = tx_sifs + slottime; 2281 tx_difs = IEEE80211_DUR_DIFS(tx_sifs, slottime); 2282 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2283 2284 tmp = RAL_READ(sc, RT2560_CSR11); 2285 tmp = (tmp & ~0x1f00) | slottime << 8; 2286 RAL_WRITE(sc, RT2560_CSR11, tmp); 2287 2288 tmp = tx_pifs << 16 | tx_sifs; 2289 RAL_WRITE(sc, RT2560_CSR18, tmp); 2290 2291 tmp = eifs << 16 | tx_difs; 2292 RAL_WRITE(sc, RT2560_CSR19, tmp); 2293 2294 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2295 } 2296 2297 static void 2298 rt2560_set_basicrates(struct rt2560_softc *sc, 2299 const struct ieee80211_rateset *rs) 2300 { 2301 struct ieee80211com *ic = &sc->sc_ic; 2302 uint32_t mask = 0; 2303 uint8_t rate; 2304 int i; 2305 2306 for (i = 0; i < rs->rs_nrates; i++) { 2307 rate = rs->rs_rates[i]; 2308 2309 if (!(rate & IEEE80211_RATE_BASIC)) 2310 continue; 2311 2312 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, 2313 IEEE80211_RV(rate)); 2314 } 2315 2316 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2317 2318 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2319 } 2320 2321 static void 2322 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2323 { 2324 uint32_t tmp; 2325 2326 /* set ON period to 70ms and OFF period to 30ms */ 2327 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2328 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2329 } 2330 2331 static void 2332 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2333 { 2334 uint32_t tmp; 2335 2336 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2337 RAL_WRITE(sc, RT2560_CSR5, tmp); 2338 2339 tmp = bssid[4] | bssid[5] << 8; 2340 RAL_WRITE(sc, RT2560_CSR6, tmp); 2341 2342 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2343 } 2344 2345 static void 2346 rt2560_set_macaddr(struct rt2560_softc *sc, const uint8_t *addr) 2347 { 2348 uint32_t tmp; 2349 2350 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2351 RAL_WRITE(sc, RT2560_CSR3, tmp); 2352 2353 tmp = addr[4] | addr[5] << 8; 2354 RAL_WRITE(sc, RT2560_CSR4, tmp); 2355 2356 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2357 } 2358 2359 static void 2360 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2361 { 2362 uint32_t tmp; 2363 2364 tmp = RAL_READ(sc, RT2560_CSR3); 2365 addr[0] = tmp & 0xff; 2366 addr[1] = (tmp >> 8) & 0xff; 2367 addr[2] = (tmp >> 16) & 0xff; 2368 addr[3] = (tmp >> 24); 2369 2370 tmp = RAL_READ(sc, RT2560_CSR4); 2371 addr[4] = tmp & 0xff; 2372 addr[5] = (tmp >> 8) & 0xff; 2373 } 2374 2375 static void 2376 rt2560_update_promisc(struct ieee80211com *ic) 2377 { 2378 struct rt2560_softc *sc = ic->ic_softc; 2379 uint32_t tmp; 2380 2381 tmp = RAL_READ(sc, RT2560_RXCSR0); 2382 2383 tmp &= ~RT2560_DROP_NOT_TO_ME; 2384 if (ic->ic_promisc == 0) 2385 tmp |= RT2560_DROP_NOT_TO_ME; 2386 2387 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2388 2389 DPRINTF(sc, "%s promiscuous mode\n", 2390 (ic->ic_promisc > 0) ? "entering" : "leaving"); 2391 } 2392 2393 static const char * 2394 rt2560_get_rf(int rev) 2395 { 2396 switch (rev) { 2397 case RT2560_RF_2522: return "RT2522"; 2398 case RT2560_RF_2523: return "RT2523"; 2399 case RT2560_RF_2524: return "RT2524"; 2400 case RT2560_RF_2525: return "RT2525"; 2401 case RT2560_RF_2525E: return "RT2525e"; 2402 case RT2560_RF_2526: return "RT2526"; 2403 case RT2560_RF_5222: return "RT5222"; 2404 default: return "unknown"; 2405 } 2406 } 2407 2408 static void 2409 rt2560_read_config(struct rt2560_softc *sc) 2410 { 2411 uint16_t val; 2412 int i; 2413 2414 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2415 sc->rf_rev = (val >> 11) & 0x7; 2416 sc->hw_radio = (val >> 10) & 0x1; 2417 sc->led_mode = (val >> 6) & 0x7; 2418 sc->rx_ant = (val >> 4) & 0x3; 2419 sc->tx_ant = (val >> 2) & 0x3; 2420 sc->nb_ant = val & 0x3; 2421 2422 /* read default values for BBP registers */ 2423 for (i = 0; i < 16; i++) { 2424 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2425 if (val == 0 || val == 0xffff) 2426 continue; 2427 2428 sc->bbp_prom[i].reg = val >> 8; 2429 sc->bbp_prom[i].val = val & 0xff; 2430 } 2431 2432 /* read Tx power for all b/g channels */ 2433 for (i = 0; i < 14 / 2; i++) { 2434 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2435 sc->txpow[i * 2] = val & 0xff; 2436 sc->txpow[i * 2 + 1] = val >> 8; 2437 } 2438 for (i = 0; i < 14; ++i) { 2439 if (sc->txpow[i] > 31) 2440 sc->txpow[i] = 24; 2441 } 2442 2443 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2444 if ((val & 0xff) == 0xff) 2445 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2446 else 2447 sc->rssi_corr = val & 0xff; 2448 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2449 sc->rssi_corr, val); 2450 } 2451 2452 static void 2453 rt2560_scan_start(struct ieee80211com *ic) 2454 { 2455 struct rt2560_softc *sc = ic->ic_softc; 2456 2457 /* abort TSF synchronization */ 2458 RAL_WRITE(sc, RT2560_CSR14, 0); 2459 rt2560_set_bssid(sc, ieee80211broadcastaddr); 2460 } 2461 2462 static void 2463 rt2560_scan_end(struct ieee80211com *ic) 2464 { 2465 struct rt2560_softc *sc = ic->ic_softc; 2466 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2467 2468 rt2560_enable_tsf_sync(sc); 2469 /* XXX keep local copy */ 2470 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2471 } 2472 2473 static int 2474 rt2560_bbp_init(struct rt2560_softc *sc) 2475 { 2476 int i, ntries; 2477 2478 /* wait for BBP to be ready */ 2479 for (ntries = 0; ntries < 100; ntries++) { 2480 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2481 break; 2482 DELAY(1); 2483 } 2484 if (ntries == 100) { 2485 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2486 return EIO; 2487 } 2488 2489 /* initialize BBP registers to default values */ 2490 for (i = 0; i < nitems(rt2560_def_bbp); i++) { 2491 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2492 rt2560_def_bbp[i].val); 2493 } 2494 2495 /* initialize BBP registers to values stored in EEPROM */ 2496 for (i = 0; i < 16; i++) { 2497 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2498 break; 2499 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2500 } 2501 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2502 2503 return 0; 2504 } 2505 2506 static void 2507 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2508 { 2509 uint32_t tmp; 2510 uint8_t tx; 2511 2512 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2513 if (antenna == 1) 2514 tx |= RT2560_BBP_ANTA; 2515 else if (antenna == 2) 2516 tx |= RT2560_BBP_ANTB; 2517 else 2518 tx |= RT2560_BBP_DIVERSITY; 2519 2520 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2521 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2522 sc->rf_rev == RT2560_RF_5222) 2523 tx |= RT2560_BBP_FLIPIQ; 2524 2525 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2526 2527 /* update values for CCK and OFDM in BBPCSR1 */ 2528 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2529 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2530 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2531 } 2532 2533 static void 2534 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2535 { 2536 uint8_t rx; 2537 2538 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2539 if (antenna == 1) 2540 rx |= RT2560_BBP_ANTA; 2541 else if (antenna == 2) 2542 rx |= RT2560_BBP_ANTB; 2543 else 2544 rx |= RT2560_BBP_DIVERSITY; 2545 2546 /* need to force no I/Q flip for RF 2525e and 2526 */ 2547 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2548 rx &= ~RT2560_BBP_FLIPIQ; 2549 2550 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2551 } 2552 2553 static void 2554 rt2560_init_locked(struct rt2560_softc *sc) 2555 { 2556 struct ieee80211com *ic = &sc->sc_ic; 2557 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2558 uint32_t tmp; 2559 int i; 2560 2561 RAL_LOCK_ASSERT(sc); 2562 2563 rt2560_stop_locked(sc); 2564 2565 /* setup tx rings */ 2566 tmp = RT2560_PRIO_RING_COUNT << 24 | 2567 RT2560_ATIM_RING_COUNT << 16 | 2568 RT2560_TX_RING_COUNT << 8 | 2569 RT2560_TX_DESC_SIZE; 2570 2571 /* rings must be initialized in this exact order */ 2572 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2573 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2574 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2575 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2576 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2577 2578 /* setup rx ring */ 2579 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2580 2581 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2582 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2583 2584 /* initialize MAC registers to default values */ 2585 for (i = 0; i < nitems(rt2560_def_mac); i++) 2586 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2587 2588 rt2560_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr); 2589 2590 /* set basic rate set (will be updated later) */ 2591 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2592 2593 rt2560_update_slot(ic); 2594 rt2560_update_plcp(sc); 2595 rt2560_update_led(sc, 0, 0); 2596 2597 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2598 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2599 2600 if (rt2560_bbp_init(sc) != 0) { 2601 rt2560_stop_locked(sc); 2602 return; 2603 } 2604 2605 rt2560_set_txantenna(sc, sc->tx_ant); 2606 rt2560_set_rxantenna(sc, sc->rx_ant); 2607 2608 /* set default BSS channel */ 2609 rt2560_set_chan(sc, ic->ic_curchan); 2610 2611 /* kick Rx */ 2612 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2613 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2614 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2615 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2616 ic->ic_opmode != IEEE80211_M_MBSS) 2617 tmp |= RT2560_DROP_TODS; 2618 if (ic->ic_promisc == 0) 2619 tmp |= RT2560_DROP_NOT_TO_ME; 2620 } 2621 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2622 2623 /* clear old FCS and Rx FIFO errors */ 2624 RAL_READ(sc, RT2560_CNT0); 2625 RAL_READ(sc, RT2560_CNT4); 2626 2627 /* clear any pending interrupts */ 2628 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2629 2630 /* enable interrupts */ 2631 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2632 2633 sc->sc_flags |= RT2560_F_RUNNING; 2634 2635 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2636 } 2637 2638 static void 2639 rt2560_init(void *priv) 2640 { 2641 struct rt2560_softc *sc = priv; 2642 struct ieee80211com *ic = &sc->sc_ic; 2643 2644 RAL_LOCK(sc); 2645 rt2560_init_locked(sc); 2646 RAL_UNLOCK(sc); 2647 2648 if (sc->sc_flags & RT2560_F_RUNNING) 2649 ieee80211_start_all(ic); /* start all vap's */ 2650 } 2651 2652 static void 2653 rt2560_stop_locked(struct rt2560_softc *sc) 2654 { 2655 volatile int *flags = &sc->sc_flags; 2656 2657 RAL_LOCK_ASSERT(sc); 2658 2659 while (*flags & RT2560_F_INPUT_RUNNING) 2660 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2661 2662 callout_stop(&sc->watchdog_ch); 2663 sc->sc_tx_timer = 0; 2664 2665 if (sc->sc_flags & RT2560_F_RUNNING) { 2666 sc->sc_flags &= ~RT2560_F_RUNNING; 2667 2668 /* abort Tx */ 2669 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2670 2671 /* disable Rx */ 2672 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2673 2674 /* reset ASIC (imply reset BBP) */ 2675 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2676 RAL_WRITE(sc, RT2560_CSR1, 0); 2677 2678 /* disable interrupts */ 2679 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2680 2681 /* reset Tx and Rx rings */ 2682 rt2560_reset_tx_ring(sc, &sc->txq); 2683 rt2560_reset_tx_ring(sc, &sc->atimq); 2684 rt2560_reset_tx_ring(sc, &sc->prioq); 2685 rt2560_reset_tx_ring(sc, &sc->bcnq); 2686 rt2560_reset_rx_ring(sc, &sc->rxq); 2687 } 2688 } 2689 2690 void 2691 rt2560_stop(void *arg) 2692 { 2693 struct rt2560_softc *sc = arg; 2694 2695 RAL_LOCK(sc); 2696 rt2560_stop_locked(sc); 2697 RAL_UNLOCK(sc); 2698 } 2699 2700 static int 2701 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2702 const struct ieee80211_bpf_params *params) 2703 { 2704 struct ieee80211com *ic = ni->ni_ic; 2705 struct rt2560_softc *sc = ic->ic_softc; 2706 2707 RAL_LOCK(sc); 2708 2709 /* prevent management frames from being sent if we're not ready */ 2710 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 2711 RAL_UNLOCK(sc); 2712 m_freem(m); 2713 return ENETDOWN; 2714 } 2715 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2716 RAL_UNLOCK(sc); 2717 m_freem(m); 2718 return ENOBUFS; /* XXX */ 2719 } 2720 2721 if (params == NULL) { 2722 /* 2723 * Legacy path; interpret frame contents to decide 2724 * precisely how to send the frame. 2725 */ 2726 if (rt2560_tx_mgt(sc, m, ni) != 0) 2727 goto bad; 2728 } else { 2729 /* 2730 * Caller supplied explicit parameters to use in 2731 * sending the frame. 2732 */ 2733 if (rt2560_tx_raw(sc, m, ni, params)) 2734 goto bad; 2735 } 2736 sc->sc_tx_timer = 5; 2737 2738 RAL_UNLOCK(sc); 2739 2740 return 0; 2741 bad: 2742 RAL_UNLOCK(sc); 2743 return EIO; /* XXX */ 2744 } 2745