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_arp.h> 49 #include <net/ethernet.h> 50 #include <net/if_dl.h> 51 #include <net/if_media.h> 52 #include <net/if_types.h> 53 54 #include <net80211/ieee80211_var.h> 55 #include <net80211/ieee80211_phy.h> 56 #include <net80211/ieee80211_radiotap.h> 57 #include <net80211/ieee80211_regdomain.h> 58 #include <net80211/ieee80211_amrr.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 name[IFNAMSIZ], int unit, int opmode, 90 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 91 const uint8_t mac[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 struct ieee80211_node *rt2560_node_alloc( 108 struct ieee80211_node_table *); 109 static void rt2560_newassoc(struct ieee80211_node *, int); 110 static int rt2560_newstate(struct ieee80211vap *, 111 enum ieee80211_state, int); 112 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 113 static void rt2560_encryption_intr(struct rt2560_softc *); 114 static void rt2560_tx_intr(struct rt2560_softc *); 115 static void rt2560_prio_intr(struct rt2560_softc *); 116 static void rt2560_decryption_intr(struct rt2560_softc *); 117 static void rt2560_rx_intr(struct rt2560_softc *); 118 static void rt2560_beacon_update(struct ieee80211vap *, int item); 119 static void rt2560_beacon_expire(struct rt2560_softc *); 120 static void rt2560_wakeup_expire(struct rt2560_softc *); 121 static void rt2560_scan_start(struct ieee80211com *); 122 static void rt2560_scan_end(struct ieee80211com *); 123 static void rt2560_set_channel(struct ieee80211com *); 124 static void rt2560_setup_tx_desc(struct rt2560_softc *, 125 struct rt2560_tx_desc *, uint32_t, int, int, int, 126 bus_addr_t); 127 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 128 struct ieee80211_node *); 129 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 130 struct ieee80211_node *); 131 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 132 struct ieee80211_node *); 133 static void rt2560_start_locked(struct ifnet *); 134 static void rt2560_start(struct ifnet *); 135 static void rt2560_watchdog(void *); 136 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 137 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 138 uint8_t); 139 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 140 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 141 uint32_t); 142 static void rt2560_set_chan(struct rt2560_softc *, 143 struct ieee80211_channel *); 144 #if 0 145 static void rt2560_disable_rf_tune(struct rt2560_softc *); 146 #endif 147 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 148 static void rt2560_update_plcp(struct rt2560_softc *); 149 static void rt2560_update_slot(struct ifnet *); 150 static void rt2560_set_basicrates(struct rt2560_softc *); 151 static void rt2560_update_led(struct rt2560_softc *, int, int); 152 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 153 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 154 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 155 static void rt2560_update_promisc(struct ifnet *); 156 static const char *rt2560_get_rf(int); 157 static void rt2560_read_config(struct rt2560_softc *); 158 static int rt2560_bbp_init(struct rt2560_softc *); 159 static void rt2560_set_txantenna(struct rt2560_softc *, int); 160 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 161 static void rt2560_init_locked(struct rt2560_softc *); 162 static void rt2560_init(void *); 163 static void rt2560_stop_locked(struct rt2560_softc *); 164 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 165 const struct ieee80211_bpf_params *); 166 167 static const struct { 168 uint32_t reg; 169 uint32_t val; 170 } rt2560_def_mac[] = { 171 RT2560_DEF_MAC 172 }; 173 174 static const struct { 175 uint8_t reg; 176 uint8_t val; 177 } rt2560_def_bbp[] = { 178 RT2560_DEF_BBP 179 }; 180 181 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 182 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 183 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 184 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 185 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 186 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 187 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 188 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 189 190 static const struct { 191 uint8_t chan; 192 uint32_t r1, r2, r4; 193 } rt2560_rf5222[] = { 194 RT2560_RF5222 195 }; 196 197 int 198 rt2560_attach(device_t dev, int id) 199 { 200 struct rt2560_softc *sc = device_get_softc(dev); 201 struct ieee80211com *ic; 202 struct ifnet *ifp; 203 int error; 204 uint8_t bands; 205 206 sc->sc_dev = dev; 207 208 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 209 MTX_DEF | MTX_RECURSE); 210 211 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 212 213 /* retrieve RT2560 rev. no */ 214 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 215 216 /* retrieve RF rev. no and various other things from EEPROM */ 217 rt2560_read_config(sc); 218 219 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 220 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 221 222 /* 223 * Allocate Tx and Rx rings. 224 */ 225 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 226 if (error != 0) { 227 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 228 goto fail1; 229 } 230 231 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 232 if (error != 0) { 233 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 234 goto fail2; 235 } 236 237 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 238 if (error != 0) { 239 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 240 goto fail3; 241 } 242 243 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 244 if (error != 0) { 245 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 246 goto fail4; 247 } 248 249 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 250 if (error != 0) { 251 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 252 goto fail5; 253 } 254 255 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 256 if (ifp == NULL) { 257 device_printf(sc->sc_dev, "can not if_alloc()\n"); 258 goto fail6; 259 } 260 ic = ifp->if_l2com; 261 262 /* retrieve MAC address */ 263 rt2560_get_macaddr(sc, ic->ic_myaddr); 264 265 ifp->if_softc = sc; 266 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 267 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 268 ifp->if_init = rt2560_init; 269 ifp->if_ioctl = rt2560_ioctl; 270 ifp->if_start = rt2560_start; 271 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 272 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 273 IFQ_SET_READY(&ifp->if_snd); 274 275 ic->ic_ifp = ifp; 276 ic->ic_opmode = IEEE80211_M_STA; 277 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 278 279 /* set device capabilities */ 280 ic->ic_caps = 281 IEEE80211_C_STA /* station mode */ 282 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 283 | IEEE80211_C_HOSTAP /* hostap mode */ 284 | IEEE80211_C_MONITOR /* monitor mode */ 285 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 286 | IEEE80211_C_WDS /* 4-address traffic works */ 287 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 288 | IEEE80211_C_SHSLOT /* short slot time supported */ 289 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 290 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 291 #ifdef notyet 292 | IEEE80211_C_TXFRAG /* handle tx frags */ 293 #endif 294 ; 295 296 bands = 0; 297 setbit(&bands, IEEE80211_MODE_11B); 298 setbit(&bands, IEEE80211_MODE_11G); 299 if (sc->rf_rev == RT2560_RF_5222) 300 setbit(&bands, IEEE80211_MODE_11A); 301 ieee80211_init_channels(ic, NULL, &bands); 302 303 ieee80211_ifattach(ic); 304 ic->ic_newassoc = rt2560_newassoc; 305 ic->ic_raw_xmit = rt2560_raw_xmit; 306 ic->ic_updateslot = rt2560_update_slot; 307 ic->ic_update_promisc = rt2560_update_promisc; 308 ic->ic_node_alloc = rt2560_node_alloc; 309 ic->ic_scan_start = rt2560_scan_start; 310 ic->ic_scan_end = rt2560_scan_end; 311 ic->ic_set_channel = rt2560_set_channel; 312 313 ic->ic_vap_create = rt2560_vap_create; 314 ic->ic_vap_delete = rt2560_vap_delete; 315 316 bpfattach(ifp, DLT_IEEE802_11_RADIO, 317 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 318 319 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 320 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 321 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT); 322 323 sc->sc_txtap_len = sizeof sc->sc_txtap; 324 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 325 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT); 326 327 /* 328 * Add a few sysctl knobs. 329 */ 330 #ifdef RAL_DEBUG 331 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 333 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 334 #endif 335 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 336 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 337 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 338 339 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 340 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 341 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 342 343 if (bootverbose) 344 ieee80211_announce(ic); 345 346 return 0; 347 348 fail6: rt2560_free_rx_ring(sc, &sc->rxq); 349 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 350 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 351 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 352 fail2: rt2560_free_tx_ring(sc, &sc->txq); 353 fail1: mtx_destroy(&sc->sc_mtx); 354 355 return ENXIO; 356 } 357 358 int 359 rt2560_detach(void *xsc) 360 { 361 struct rt2560_softc *sc = xsc; 362 struct ifnet *ifp = sc->sc_ifp; 363 struct ieee80211com *ic = ifp->if_l2com; 364 365 rt2560_stop(sc); 366 367 bpfdetach(ifp); 368 ieee80211_ifdetach(ic); 369 370 rt2560_free_tx_ring(sc, &sc->txq); 371 rt2560_free_tx_ring(sc, &sc->atimq); 372 rt2560_free_tx_ring(sc, &sc->prioq); 373 rt2560_free_tx_ring(sc, &sc->bcnq); 374 rt2560_free_rx_ring(sc, &sc->rxq); 375 376 if_free(ifp); 377 378 mtx_destroy(&sc->sc_mtx); 379 380 return 0; 381 } 382 383 static struct ieee80211vap * 384 rt2560_vap_create(struct ieee80211com *ic, 385 const char name[IFNAMSIZ], int unit, int opmode, int flags, 386 const uint8_t bssid[IEEE80211_ADDR_LEN], 387 const uint8_t mac[IEEE80211_ADDR_LEN]) 388 { 389 struct ifnet *ifp = ic->ic_ifp; 390 struct rt2560_vap *rvp; 391 struct ieee80211vap *vap; 392 393 switch (opmode) { 394 case IEEE80211_M_STA: 395 case IEEE80211_M_IBSS: 396 case IEEE80211_M_AHDEMO: 397 case IEEE80211_M_MONITOR: 398 case IEEE80211_M_HOSTAP: 399 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 400 if_printf(ifp, "only 1 vap supported\n"); 401 return NULL; 402 } 403 if (opmode == IEEE80211_M_STA) 404 flags |= IEEE80211_CLONE_NOBEACONS; 405 break; 406 case IEEE80211_M_WDS: 407 if (TAILQ_EMPTY(&ic->ic_vaps) || 408 ic->ic_opmode != IEEE80211_M_HOSTAP) { 409 if_printf(ifp, "wds only supported in ap mode\n"); 410 return NULL; 411 } 412 /* 413 * Silently remove any request for a unique 414 * bssid; WDS vap's always share the local 415 * mac address. 416 */ 417 flags &= ~IEEE80211_CLONE_BSSID; 418 break; 419 default: 420 if_printf(ifp, "unknown opmode %d\n", opmode); 421 return NULL; 422 } 423 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 424 M_80211_VAP, M_NOWAIT | M_ZERO); 425 if (rvp == NULL) 426 return NULL; 427 vap = &rvp->ral_vap; 428 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 429 430 /* override state transition machine */ 431 rvp->ral_newstate = vap->iv_newstate; 432 vap->iv_newstate = rt2560_newstate; 433 vap->iv_update_beacon = rt2560_beacon_update; 434 435 ieee80211_amrr_init(&rvp->amrr, vap, 436 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 437 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 438 500 /* ms */); 439 440 /* complete setup */ 441 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 442 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 443 ic->ic_opmode = opmode; 444 return vap; 445 } 446 447 static void 448 rt2560_vap_delete(struct ieee80211vap *vap) 449 { 450 struct rt2560_vap *rvp = RT2560_VAP(vap); 451 452 ieee80211_amrr_cleanup(&rvp->amrr); 453 ieee80211_vap_detach(vap); 454 free(rvp, M_80211_VAP); 455 } 456 457 void 458 rt2560_resume(void *xsc) 459 { 460 struct rt2560_softc *sc = xsc; 461 struct ifnet *ifp = sc->sc_ifp; 462 463 if (ifp->if_flags & IFF_UP) 464 rt2560_init(sc); 465 } 466 467 static void 468 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 469 { 470 if (error != 0) 471 return; 472 473 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 474 475 *(bus_addr_t *)arg = segs[0].ds_addr; 476 } 477 478 static int 479 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 480 int count) 481 { 482 int i, error; 483 484 ring->count = count; 485 ring->queued = 0; 486 ring->cur = ring->next = 0; 487 ring->cur_encrypt = ring->next_encrypt = 0; 488 489 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 490 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 491 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 492 0, NULL, NULL, &ring->desc_dmat); 493 if (error != 0) { 494 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 495 goto fail; 496 } 497 498 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 499 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 500 if (error != 0) { 501 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 502 goto fail; 503 } 504 505 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 506 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 507 0); 508 if (error != 0) { 509 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 510 goto fail; 511 } 512 513 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 514 M_NOWAIT | M_ZERO); 515 if (ring->data == NULL) { 516 device_printf(sc->sc_dev, "could not allocate soft data\n"); 517 error = ENOMEM; 518 goto fail; 519 } 520 521 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 522 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 523 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 524 &ring->data_dmat); 525 if (error != 0) { 526 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 527 goto fail; 528 } 529 530 for (i = 0; i < count; i++) { 531 error = bus_dmamap_create(ring->data_dmat, 0, 532 &ring->data[i].map); 533 if (error != 0) { 534 device_printf(sc->sc_dev, "could not create DMA map\n"); 535 goto fail; 536 } 537 } 538 539 return 0; 540 541 fail: rt2560_free_tx_ring(sc, ring); 542 return error; 543 } 544 545 static void 546 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 547 { 548 struct rt2560_tx_desc *desc; 549 struct rt2560_tx_data *data; 550 int i; 551 552 for (i = 0; i < ring->count; i++) { 553 desc = &ring->desc[i]; 554 data = &ring->data[i]; 555 556 if (data->m != NULL) { 557 bus_dmamap_sync(ring->data_dmat, data->map, 558 BUS_DMASYNC_POSTWRITE); 559 bus_dmamap_unload(ring->data_dmat, data->map); 560 m_freem(data->m); 561 data->m = NULL; 562 } 563 564 if (data->ni != NULL) { 565 ieee80211_free_node(data->ni); 566 data->ni = NULL; 567 } 568 569 desc->flags = 0; 570 } 571 572 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 573 574 ring->queued = 0; 575 ring->cur = ring->next = 0; 576 ring->cur_encrypt = ring->next_encrypt = 0; 577 } 578 579 static void 580 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 581 { 582 struct rt2560_tx_data *data; 583 int i; 584 585 if (ring->desc != NULL) { 586 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 587 BUS_DMASYNC_POSTWRITE); 588 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 589 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 590 } 591 592 if (ring->desc_dmat != NULL) 593 bus_dma_tag_destroy(ring->desc_dmat); 594 595 if (ring->data != NULL) { 596 for (i = 0; i < ring->count; i++) { 597 data = &ring->data[i]; 598 599 if (data->m != NULL) { 600 bus_dmamap_sync(ring->data_dmat, data->map, 601 BUS_DMASYNC_POSTWRITE); 602 bus_dmamap_unload(ring->data_dmat, data->map); 603 m_freem(data->m); 604 } 605 606 if (data->ni != NULL) 607 ieee80211_free_node(data->ni); 608 609 if (data->map != NULL) 610 bus_dmamap_destroy(ring->data_dmat, data->map); 611 } 612 613 free(ring->data, M_DEVBUF); 614 } 615 616 if (ring->data_dmat != NULL) 617 bus_dma_tag_destroy(ring->data_dmat); 618 } 619 620 static int 621 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 622 int count) 623 { 624 struct rt2560_rx_desc *desc; 625 struct rt2560_rx_data *data; 626 bus_addr_t physaddr; 627 int i, error; 628 629 ring->count = count; 630 ring->cur = ring->next = 0; 631 ring->cur_decrypt = 0; 632 633 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 634 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 635 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 636 0, NULL, NULL, &ring->desc_dmat); 637 if (error != 0) { 638 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 639 goto fail; 640 } 641 642 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 643 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 644 if (error != 0) { 645 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 646 goto fail; 647 } 648 649 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 650 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 651 0); 652 if (error != 0) { 653 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 654 goto fail; 655 } 656 657 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 658 M_NOWAIT | M_ZERO); 659 if (ring->data == NULL) { 660 device_printf(sc->sc_dev, "could not allocate soft data\n"); 661 error = ENOMEM; 662 goto fail; 663 } 664 665 /* 666 * Pre-allocate Rx buffers and populate Rx ring. 667 */ 668 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 669 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 670 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 671 if (error != 0) { 672 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 673 goto fail; 674 } 675 676 for (i = 0; i < count; i++) { 677 desc = &sc->rxq.desc[i]; 678 data = &sc->rxq.data[i]; 679 680 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 681 if (error != 0) { 682 device_printf(sc->sc_dev, "could not create DMA map\n"); 683 goto fail; 684 } 685 686 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 687 if (data->m == NULL) { 688 device_printf(sc->sc_dev, 689 "could not allocate rx mbuf\n"); 690 error = ENOMEM; 691 goto fail; 692 } 693 694 error = bus_dmamap_load(ring->data_dmat, data->map, 695 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 696 &physaddr, 0); 697 if (error != 0) { 698 device_printf(sc->sc_dev, 699 "could not load rx buf DMA map"); 700 goto fail; 701 } 702 703 desc->flags = htole32(RT2560_RX_BUSY); 704 desc->physaddr = htole32(physaddr); 705 } 706 707 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 708 709 return 0; 710 711 fail: rt2560_free_rx_ring(sc, ring); 712 return error; 713 } 714 715 static void 716 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 717 { 718 int i; 719 720 for (i = 0; i < ring->count; i++) { 721 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 722 ring->data[i].drop = 0; 723 } 724 725 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 726 727 ring->cur = ring->next = 0; 728 ring->cur_decrypt = 0; 729 } 730 731 static void 732 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 733 { 734 struct rt2560_rx_data *data; 735 int i; 736 737 if (ring->desc != NULL) { 738 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 739 BUS_DMASYNC_POSTWRITE); 740 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 741 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 742 } 743 744 if (ring->desc_dmat != NULL) 745 bus_dma_tag_destroy(ring->desc_dmat); 746 747 if (ring->data != NULL) { 748 for (i = 0; i < ring->count; i++) { 749 data = &ring->data[i]; 750 751 if (data->m != NULL) { 752 bus_dmamap_sync(ring->data_dmat, data->map, 753 BUS_DMASYNC_POSTREAD); 754 bus_dmamap_unload(ring->data_dmat, data->map); 755 m_freem(data->m); 756 } 757 758 if (data->map != NULL) 759 bus_dmamap_destroy(ring->data_dmat, data->map); 760 } 761 762 free(ring->data, M_DEVBUF); 763 } 764 765 if (ring->data_dmat != NULL) 766 bus_dma_tag_destroy(ring->data_dmat); 767 } 768 769 static struct ieee80211_node * 770 rt2560_node_alloc(struct ieee80211_node_table *nt) 771 { 772 struct rt2560_node *rn; 773 774 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE, 775 M_NOWAIT | M_ZERO); 776 777 return (rn != NULL) ? &rn->ni : NULL; 778 } 779 780 static void 781 rt2560_newassoc(struct ieee80211_node *ni, int isnew) 782 { 783 struct ieee80211vap *vap = ni->ni_vap; 784 785 ieee80211_amrr_node_init(&RT2560_VAP(vap)->amrr, 786 &RT2560_NODE(ni)->amrr, ni); 787 } 788 789 static int 790 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 791 { 792 struct rt2560_vap *rvp = RT2560_VAP(vap); 793 struct ifnet *ifp = vap->iv_ic->ic_ifp; 794 struct rt2560_softc *sc = ifp->if_softc; 795 int error; 796 797 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 798 /* abort TSF synchronization */ 799 RAL_WRITE(sc, RT2560_CSR14, 0); 800 801 /* turn association led off */ 802 rt2560_update_led(sc, 0, 0); 803 } 804 805 error = rvp->ral_newstate(vap, nstate, arg); 806 807 if (error == 0 && nstate == IEEE80211_S_RUN) { 808 struct ieee80211_node *ni = vap->iv_bss; 809 struct mbuf *m; 810 811 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 812 rt2560_update_plcp(sc); 813 rt2560_set_basicrates(sc); 814 rt2560_set_bssid(sc, ni->ni_bssid); 815 } 816 817 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 818 vap->iv_opmode == IEEE80211_M_IBSS) { 819 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 820 if (m == NULL) { 821 if_printf(ifp, "could not allocate beacon\n"); 822 return ENOBUFS; 823 } 824 ieee80211_ref_node(ni); 825 error = rt2560_tx_bcn(sc, m, ni); 826 if (error != 0) 827 return error; 828 } 829 830 /* turn assocation led on */ 831 rt2560_update_led(sc, 1, 0); 832 833 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 834 if (vap->iv_opmode == IEEE80211_M_STA) { 835 /* fake a join to init the tx rate */ 836 rt2560_newassoc(ni, 1); 837 } 838 rt2560_enable_tsf_sync(sc); 839 } 840 } 841 return error; 842 } 843 844 /* 845 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 846 * 93C66). 847 */ 848 static uint16_t 849 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 850 { 851 uint32_t tmp; 852 uint16_t val; 853 int n; 854 855 /* clock C once before the first command */ 856 RT2560_EEPROM_CTL(sc, 0); 857 858 RT2560_EEPROM_CTL(sc, RT2560_S); 859 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 860 RT2560_EEPROM_CTL(sc, RT2560_S); 861 862 /* write start bit (1) */ 863 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 864 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 865 866 /* write READ opcode (10) */ 867 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 868 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 869 RT2560_EEPROM_CTL(sc, RT2560_S); 870 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 871 872 /* write address (A5-A0 or A7-A0) */ 873 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 874 for (; n >= 0; n--) { 875 RT2560_EEPROM_CTL(sc, RT2560_S | 876 (((addr >> n) & 1) << RT2560_SHIFT_D)); 877 RT2560_EEPROM_CTL(sc, RT2560_S | 878 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 879 } 880 881 RT2560_EEPROM_CTL(sc, RT2560_S); 882 883 /* read data Q15-Q0 */ 884 val = 0; 885 for (n = 15; n >= 0; n--) { 886 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 887 tmp = RAL_READ(sc, RT2560_CSR21); 888 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 889 RT2560_EEPROM_CTL(sc, RT2560_S); 890 } 891 892 RT2560_EEPROM_CTL(sc, 0); 893 894 /* clear Chip Select and clock C */ 895 RT2560_EEPROM_CTL(sc, RT2560_S); 896 RT2560_EEPROM_CTL(sc, 0); 897 RT2560_EEPROM_CTL(sc, RT2560_C); 898 899 return val; 900 } 901 902 /* 903 * Some frames were processed by the hardware cipher engine and are ready for 904 * transmission. 905 */ 906 static void 907 rt2560_encryption_intr(struct rt2560_softc *sc) 908 { 909 struct rt2560_tx_desc *desc; 910 int hw; 911 912 /* retrieve last descriptor index processed by cipher engine */ 913 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 914 hw /= RT2560_TX_DESC_SIZE; 915 916 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 917 BUS_DMASYNC_POSTREAD); 918 919 while (sc->txq.next_encrypt != hw) { 920 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 921 printf("hw encrypt %d, cur_encrypt %d\n", hw, 922 sc->txq.cur_encrypt); 923 break; 924 } 925 926 desc = &sc->txq.desc[sc->txq.next_encrypt]; 927 928 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 929 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 930 break; 931 932 /* for TKIP, swap eiv field to fix a bug in ASIC */ 933 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 934 RT2560_TX_CIPHER_TKIP) 935 desc->eiv = bswap32(desc->eiv); 936 937 /* mark the frame ready for transmission */ 938 desc->flags |= htole32(RT2560_TX_VALID); 939 desc->flags |= htole32(RT2560_TX_BUSY); 940 941 DPRINTFN(sc, 15, "encryption done idx=%u\n", 942 sc->txq.next_encrypt); 943 944 sc->txq.next_encrypt = 945 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 946 } 947 948 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 949 BUS_DMASYNC_PREWRITE); 950 951 /* kick Tx */ 952 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 953 } 954 955 static void 956 rt2560_tx_intr(struct rt2560_softc *sc) 957 { 958 struct ifnet *ifp = sc->sc_ifp; 959 struct rt2560_tx_desc *desc; 960 struct rt2560_tx_data *data; 961 struct rt2560_node *rn; 962 struct mbuf *m; 963 uint32_t flags; 964 int retrycnt; 965 966 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 967 BUS_DMASYNC_POSTREAD); 968 969 for (;;) { 970 desc = &sc->txq.desc[sc->txq.next]; 971 data = &sc->txq.data[sc->txq.next]; 972 973 flags = le32toh(desc->flags); 974 if ((flags & RT2560_TX_BUSY) || 975 (flags & RT2560_TX_CIPHER_BUSY) || 976 !(flags & RT2560_TX_VALID)) 977 break; 978 979 rn = (struct rt2560_node *)data->ni; 980 m = data->m; 981 982 switch (flags & RT2560_TX_RESULT_MASK) { 983 case RT2560_TX_SUCCESS: 984 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 985 if (data->rix != IEEE80211_FIXED_RATE_NONE) 986 ieee80211_amrr_tx_complete(&rn->amrr, 987 IEEE80211_AMRR_SUCCESS, 0); 988 ifp->if_opackets++; 989 break; 990 991 case RT2560_TX_SUCCESS_RETRY: 992 retrycnt = RT2560_TX_RETRYCNT(flags); 993 994 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 995 retrycnt); 996 if (data->rix != IEEE80211_FIXED_RATE_NONE) 997 ieee80211_amrr_tx_complete(&rn->amrr, 998 IEEE80211_AMRR_SUCCESS, retrycnt); 999 ifp->if_opackets++; 1000 break; 1001 1002 case RT2560_TX_FAIL_RETRY: 1003 retrycnt = RT2560_TX_RETRYCNT(flags); 1004 1005 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 1006 retrycnt); 1007 if (data->rix != IEEE80211_FIXED_RATE_NONE) 1008 ieee80211_amrr_tx_complete(&rn->amrr, 1009 IEEE80211_AMRR_FAILURE, retrycnt); 1010 ifp->if_oerrors++; 1011 break; 1012 1013 case RT2560_TX_FAIL_INVALID: 1014 case RT2560_TX_FAIL_OTHER: 1015 default: 1016 device_printf(sc->sc_dev, "sending data frame failed " 1017 "0x%08x\n", flags); 1018 ifp->if_oerrors++; 1019 } 1020 1021 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1022 BUS_DMASYNC_POSTWRITE); 1023 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1024 m_freem(m); 1025 data->m = NULL; 1026 ieee80211_free_node(data->ni); 1027 data->ni = NULL; 1028 1029 /* descriptor is no longer valid */ 1030 desc->flags &= ~htole32(RT2560_TX_VALID); 1031 1032 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1033 1034 sc->txq.queued--; 1035 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1036 } 1037 1038 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1039 BUS_DMASYNC_PREWRITE); 1040 1041 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1042 sc->sc_tx_timer = 0; 1043 1044 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1045 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1046 if ((sc->sc_flags & 1047 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1048 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1049 rt2560_start_locked(ifp); 1050 } 1051 } 1052 1053 static void 1054 rt2560_prio_intr(struct rt2560_softc *sc) 1055 { 1056 struct ifnet *ifp = sc->sc_ifp; 1057 struct rt2560_tx_desc *desc; 1058 struct rt2560_tx_data *data; 1059 struct ieee80211_node *ni; 1060 struct mbuf *m; 1061 int flags; 1062 1063 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1064 BUS_DMASYNC_POSTREAD); 1065 1066 for (;;) { 1067 desc = &sc->prioq.desc[sc->prioq.next]; 1068 data = &sc->prioq.data[sc->prioq.next]; 1069 1070 flags = le32toh(desc->flags); 1071 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1072 break; 1073 1074 switch (flags & RT2560_TX_RESULT_MASK) { 1075 case RT2560_TX_SUCCESS: 1076 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1077 break; 1078 1079 case RT2560_TX_SUCCESS_RETRY: 1080 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1081 (flags >> 5) & 0x7); 1082 break; 1083 1084 case RT2560_TX_FAIL_RETRY: 1085 DPRINTFN(sc, 9, "%s\n", 1086 "sending mgt frame failed (too much retries)"); 1087 break; 1088 1089 case RT2560_TX_FAIL_INVALID: 1090 case RT2560_TX_FAIL_OTHER: 1091 default: 1092 device_printf(sc->sc_dev, "sending mgt frame failed " 1093 "0x%08x\n", flags); 1094 break; 1095 } 1096 1097 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1098 BUS_DMASYNC_POSTWRITE); 1099 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1100 1101 m = data->m; 1102 data->m = NULL; 1103 ni = data->ni; 1104 data->ni = NULL; 1105 1106 /* descriptor is no longer valid */ 1107 desc->flags &= ~htole32(RT2560_TX_VALID); 1108 1109 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1110 1111 sc->prioq.queued--; 1112 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1113 1114 if (m->m_flags & M_TXCB) 1115 ieee80211_process_callback(ni, m, 1116 (flags & RT2560_TX_RESULT_MASK) &~ 1117 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1118 m_freem(m); 1119 ieee80211_free_node(ni); 1120 } 1121 1122 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1123 BUS_DMASYNC_PREWRITE); 1124 1125 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1126 sc->sc_tx_timer = 0; 1127 1128 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1129 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1130 if ((sc->sc_flags & 1131 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1132 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1133 rt2560_start_locked(ifp); 1134 } 1135 } 1136 1137 /* 1138 * Some frames were processed by the hardware cipher engine and are ready for 1139 * handoff to the IEEE802.11 layer. 1140 */ 1141 static void 1142 rt2560_decryption_intr(struct rt2560_softc *sc) 1143 { 1144 struct ifnet *ifp = sc->sc_ifp; 1145 struct ieee80211com *ic = ifp->if_l2com; 1146 struct rt2560_rx_desc *desc; 1147 struct rt2560_rx_data *data; 1148 bus_addr_t physaddr; 1149 struct ieee80211_frame *wh; 1150 struct ieee80211_node *ni; 1151 struct mbuf *mnew, *m; 1152 int hw, error; 1153 1154 /* retrieve last decriptor index processed by cipher engine */ 1155 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1156 hw /= RT2560_RX_DESC_SIZE; 1157 1158 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1159 BUS_DMASYNC_POSTREAD); 1160 1161 for (; sc->rxq.cur_decrypt != hw;) { 1162 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1163 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1164 1165 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1166 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1167 break; 1168 1169 if (data->drop) { 1170 ifp->if_ierrors++; 1171 goto skip; 1172 } 1173 1174 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1175 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1176 ifp->if_ierrors++; 1177 goto skip; 1178 } 1179 1180 /* 1181 * Try to allocate a new mbuf for this ring element and load it 1182 * before processing the current mbuf. If the ring element 1183 * cannot be loaded, drop the received packet and reuse the old 1184 * mbuf. In the unlikely case that the old mbuf can't be 1185 * reloaded either, explicitly panic. 1186 */ 1187 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1188 if (mnew == NULL) { 1189 ifp->if_ierrors++; 1190 goto skip; 1191 } 1192 1193 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1194 BUS_DMASYNC_POSTREAD); 1195 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1196 1197 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1198 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1199 &physaddr, 0); 1200 if (error != 0) { 1201 m_freem(mnew); 1202 1203 /* try to reload the old mbuf */ 1204 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1205 mtod(data->m, void *), MCLBYTES, 1206 rt2560_dma_map_addr, &physaddr, 0); 1207 if (error != 0) { 1208 /* very unlikely that it will fail... */ 1209 panic("%s: could not load old rx mbuf", 1210 device_get_name(sc->sc_dev)); 1211 } 1212 ifp->if_ierrors++; 1213 goto skip; 1214 } 1215 1216 /* 1217 * New mbuf successfully loaded, update Rx ring and continue 1218 * processing. 1219 */ 1220 m = data->m; 1221 data->m = mnew; 1222 desc->physaddr = htole32(physaddr); 1223 1224 /* finalize mbuf */ 1225 m->m_pkthdr.rcvif = ifp; 1226 m->m_pkthdr.len = m->m_len = 1227 (le32toh(desc->flags) >> 16) & 0xfff; 1228 1229 if (bpf_peers_present(ifp->if_bpf)) { 1230 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1231 uint32_t tsf_lo, tsf_hi; 1232 1233 /* get timestamp (low and high 32 bits) */ 1234 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1235 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1236 1237 tap->wr_tsf = 1238 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1239 tap->wr_flags = 0; 1240 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1241 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1242 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1243 tap->wr_antenna = sc->rx_ant; 1244 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi); 1245 1246 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1247 } 1248 1249 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1250 RAL_UNLOCK(sc); 1251 wh = mtod(m, struct ieee80211_frame *); 1252 ni = ieee80211_find_rxnode(ic, 1253 (struct ieee80211_frame_min *)wh); 1254 if (ni != NULL) { 1255 (void) ieee80211_input(ni, m, 1256 RT2560_RSSI(sc, desc->rssi), RT2560_NOISE_FLOOR, 0); 1257 ieee80211_free_node(ni); 1258 } else 1259 (void) ieee80211_input_all(ic, m, 1260 RT2560_RSSI(sc, desc->rssi), RT2560_NOISE_FLOOR, 0); 1261 1262 RAL_LOCK(sc); 1263 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1264 skip: desc->flags = htole32(RT2560_RX_BUSY); 1265 1266 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1267 1268 sc->rxq.cur_decrypt = 1269 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1270 } 1271 1272 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1273 BUS_DMASYNC_PREWRITE); 1274 } 1275 1276 /* 1277 * Some frames were received. Pass them to the hardware cipher engine before 1278 * sending them to the 802.11 layer. 1279 */ 1280 static void 1281 rt2560_rx_intr(struct rt2560_softc *sc) 1282 { 1283 struct rt2560_rx_desc *desc; 1284 struct rt2560_rx_data *data; 1285 1286 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1287 BUS_DMASYNC_POSTREAD); 1288 1289 for (;;) { 1290 desc = &sc->rxq.desc[sc->rxq.cur]; 1291 data = &sc->rxq.data[sc->rxq.cur]; 1292 1293 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1294 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1295 break; 1296 1297 data->drop = 0; 1298 1299 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1300 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1301 /* 1302 * This should not happen since we did not request 1303 * to receive those frames when we filled RXCSR0. 1304 */ 1305 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1306 le32toh(desc->flags)); 1307 data->drop = 1; 1308 } 1309 1310 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1311 DPRINTFN(sc, 5, "%s\n", "bad length"); 1312 data->drop = 1; 1313 } 1314 1315 /* mark the frame for decryption */ 1316 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1317 1318 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1319 1320 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1321 } 1322 1323 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1324 BUS_DMASYNC_PREWRITE); 1325 1326 /* kick decrypt */ 1327 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1328 } 1329 1330 static void 1331 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1332 { 1333 struct rt2560_vap *rvp = RT2560_VAP(vap); 1334 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1335 1336 setbit(bo->bo_flags, item); 1337 } 1338 1339 /* 1340 * This function is called periodically in IBSS mode when a new beacon must be 1341 * sent out. 1342 */ 1343 static void 1344 rt2560_beacon_expire(struct rt2560_softc *sc) 1345 { 1346 struct ifnet *ifp = sc->sc_ifp; 1347 struct ieee80211com *ic = ifp->if_l2com; 1348 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1349 struct rt2560_vap *rvp = RT2560_VAP(vap); 1350 struct rt2560_tx_data *data; 1351 1352 if (ic->ic_opmode != IEEE80211_M_IBSS && 1353 ic->ic_opmode != IEEE80211_M_HOSTAP) 1354 return; 1355 1356 data = &sc->bcnq.data[sc->bcnq.next]; 1357 /* 1358 * Don't send beacon if bsschan isn't set 1359 */ 1360 if (data->ni == NULL) 1361 return; 1362 1363 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1364 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1365 1366 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1367 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1368 1369 rt2560_tx_bcn(sc, data->m, data->ni); 1370 1371 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1372 1373 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1374 } 1375 1376 /* ARGSUSED */ 1377 static void 1378 rt2560_wakeup_expire(struct rt2560_softc *sc) 1379 { 1380 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1381 } 1382 1383 void 1384 rt2560_intr(void *arg) 1385 { 1386 struct rt2560_softc *sc = arg; 1387 struct ifnet *ifp = sc->sc_ifp; 1388 uint32_t r; 1389 1390 RAL_LOCK(sc); 1391 1392 /* disable interrupts */ 1393 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1394 1395 /* don't re-enable interrupts if we're shutting down */ 1396 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1397 RAL_UNLOCK(sc); 1398 return; 1399 } 1400 1401 r = RAL_READ(sc, RT2560_CSR7); 1402 RAL_WRITE(sc, RT2560_CSR7, r); 1403 1404 if (r & RT2560_BEACON_EXPIRE) 1405 rt2560_beacon_expire(sc); 1406 1407 if (r & RT2560_WAKEUP_EXPIRE) 1408 rt2560_wakeup_expire(sc); 1409 1410 if (r & RT2560_ENCRYPTION_DONE) 1411 rt2560_encryption_intr(sc); 1412 1413 if (r & RT2560_TX_DONE) 1414 rt2560_tx_intr(sc); 1415 1416 if (r & RT2560_PRIO_DONE) 1417 rt2560_prio_intr(sc); 1418 1419 if (r & RT2560_DECRYPTION_DONE) 1420 rt2560_decryption_intr(sc); 1421 1422 if (r & RT2560_RX_DONE) { 1423 rt2560_rx_intr(sc); 1424 rt2560_encryption_intr(sc); 1425 } 1426 1427 /* re-enable interrupts */ 1428 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1429 1430 RAL_UNLOCK(sc); 1431 } 1432 1433 #define RAL_SIFS 10 /* us */ 1434 1435 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1436 1437 static uint8_t 1438 rt2560_plcp_signal(int rate) 1439 { 1440 switch (rate) { 1441 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1442 case 12: return 0xb; 1443 case 18: return 0xf; 1444 case 24: return 0xa; 1445 case 36: return 0xe; 1446 case 48: return 0x9; 1447 case 72: return 0xd; 1448 case 96: return 0x8; 1449 case 108: return 0xc; 1450 1451 /* CCK rates (NB: not IEEE std, device-specific) */ 1452 case 2: return 0x0; 1453 case 4: return 0x1; 1454 case 11: return 0x2; 1455 case 22: return 0x3; 1456 } 1457 return 0xff; /* XXX unsupported/unknown rate */ 1458 } 1459 1460 static void 1461 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1462 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1463 { 1464 struct ifnet *ifp = sc->sc_ifp; 1465 struct ieee80211com *ic = ifp->if_l2com; 1466 uint16_t plcp_length; 1467 int remainder; 1468 1469 desc->flags = htole32(flags); 1470 desc->flags |= htole32(len << 16); 1471 1472 desc->physaddr = htole32(physaddr); 1473 desc->wme = htole16( 1474 RT2560_AIFSN(2) | 1475 RT2560_LOGCWMIN(3) | 1476 RT2560_LOGCWMAX(8)); 1477 1478 /* setup PLCP fields */ 1479 desc->plcp_signal = rt2560_plcp_signal(rate); 1480 desc->plcp_service = 4; 1481 1482 len += IEEE80211_CRC_LEN; 1483 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) { 1484 desc->flags |= htole32(RT2560_TX_OFDM); 1485 1486 plcp_length = len & 0xfff; 1487 desc->plcp_length_hi = plcp_length >> 6; 1488 desc->plcp_length_lo = plcp_length & 0x3f; 1489 } else { 1490 plcp_length = (16 * len + rate - 1) / rate; 1491 if (rate == 22) { 1492 remainder = (16 * len) % 22; 1493 if (remainder != 0 && remainder < 7) 1494 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1495 } 1496 desc->plcp_length_hi = plcp_length >> 8; 1497 desc->plcp_length_lo = plcp_length & 0xff; 1498 1499 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1500 desc->plcp_signal |= 0x08; 1501 } 1502 1503 if (!encrypt) 1504 desc->flags |= htole32(RT2560_TX_VALID); 1505 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1506 : htole32(RT2560_TX_BUSY); 1507 } 1508 1509 static int 1510 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1511 struct ieee80211_node *ni) 1512 { 1513 struct ieee80211vap *vap = ni->ni_vap; 1514 struct ieee80211com *ic = ni->ni_ic; 1515 struct ifnet *ifp = sc->sc_ifp; 1516 struct rt2560_tx_desc *desc; 1517 struct rt2560_tx_data *data; 1518 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1519 int nsegs, rate, error; 1520 1521 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1522 data = &sc->bcnq.data[sc->bcnq.cur]; 1523 1524 /* XXX maybe a separate beacon rate? */ 1525 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1526 1527 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1528 segs, &nsegs, BUS_DMA_NOWAIT); 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 (bpf_peers_present(ifp->if_bpf)) { 1537 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1538 1539 tap->wt_flags = 0; 1540 tap->wt_rate = rate; 1541 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1542 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1543 tap->wt_antenna = sc->tx_ant; 1544 1545 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1546 } 1547 1548 data->m = m0; 1549 data->ni = ni; 1550 1551 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1552 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1553 1554 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1555 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1556 1557 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1558 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1559 BUS_DMASYNC_PREWRITE); 1560 1561 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1562 1563 return 0; 1564 } 1565 1566 static int 1567 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1568 struct ieee80211_node *ni) 1569 { 1570 struct ieee80211vap *vap = ni->ni_vap; 1571 struct ieee80211com *ic = ni->ni_ic; 1572 struct ifnet *ifp = sc->sc_ifp; 1573 struct rt2560_tx_desc *desc; 1574 struct rt2560_tx_data *data; 1575 struct ieee80211_frame *wh; 1576 struct ieee80211_key *k; 1577 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1578 uint16_t dur; 1579 uint32_t flags = 0; 1580 int nsegs, rate, error; 1581 1582 desc = &sc->prioq.desc[sc->prioq.cur]; 1583 data = &sc->prioq.data[sc->prioq.cur]; 1584 1585 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1586 1587 wh = mtod(m0, struct ieee80211_frame *); 1588 1589 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1590 k = ieee80211_crypto_encap(ni, m0); 1591 if (k == NULL) { 1592 m_freem(m0); 1593 return ENOBUFS; 1594 } 1595 } 1596 1597 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1598 segs, &nsegs, 0); 1599 if (error != 0) { 1600 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1601 error); 1602 m_freem(m0); 1603 return error; 1604 } 1605 1606 if (bpf_peers_present(ifp->if_bpf)) { 1607 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1608 1609 tap->wt_flags = 0; 1610 tap->wt_rate = rate; 1611 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1612 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1613 tap->wt_antenna = sc->tx_ant; 1614 1615 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1616 } 1617 1618 data->m = m0; 1619 data->ni = ni; 1620 /* management frames are not taken into account for amrr */ 1621 data->rix = IEEE80211_FIXED_RATE_NONE; 1622 1623 wh = mtod(m0, struct ieee80211_frame *); 1624 1625 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1626 flags |= RT2560_TX_ACK; 1627 1628 dur = ieee80211_ack_duration(sc->sc_rates, 1629 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1630 *(uint16_t *)wh->i_dur = htole16(dur); 1631 1632 /* tell hardware to add timestamp for probe responses */ 1633 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1634 IEEE80211_FC0_TYPE_MGT && 1635 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1636 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1637 flags |= RT2560_TX_TIMESTAMP; 1638 } 1639 1640 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1641 segs->ds_addr); 1642 1643 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1644 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1645 BUS_DMASYNC_PREWRITE); 1646 1647 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1648 m0->m_pkthdr.len, sc->prioq.cur, rate); 1649 1650 /* kick prio */ 1651 sc->prioq.queued++; 1652 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1653 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1654 1655 return 0; 1656 } 1657 1658 static int 1659 rt2560_sendprot(struct rt2560_softc *sc, 1660 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1661 { 1662 struct ieee80211com *ic = ni->ni_ic; 1663 const struct ieee80211_frame *wh; 1664 struct rt2560_tx_desc *desc; 1665 struct rt2560_tx_data *data; 1666 struct mbuf *mprot; 1667 int protrate, ackrate, pktlen, flags, isshort, error; 1668 uint16_t dur; 1669 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1670 int nsegs; 1671 1672 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1673 ("protection %d", prot)); 1674 1675 wh = mtod(m, const struct ieee80211_frame *); 1676 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1677 1678 protrate = ieee80211_ctl_rate(sc->sc_rates, rate); 1679 ackrate = ieee80211_ack_rate(sc->sc_rates, rate); 1680 1681 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1682 dur = ieee80211_compute_duration(sc->sc_rates, pktlen, rate, isshort) 1683 + ieee80211_ack_duration(sc->sc_rates, rate, isshort); 1684 flags = RT2560_TX_MORE_FRAG; 1685 if (prot == IEEE80211_PROT_RTSCTS) { 1686 /* NB: CTS is the same size as an ACK */ 1687 dur += ieee80211_ack_duration(sc->sc_rates, rate, isshort); 1688 flags |= RT2560_TX_ACK; 1689 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1690 } else { 1691 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1692 } 1693 if (mprot == NULL) { 1694 /* XXX stat + msg */ 1695 return ENOBUFS; 1696 } 1697 1698 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1699 data = &sc->txq.data[sc->txq.cur_encrypt]; 1700 1701 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1702 mprot, segs, &nsegs, 0); 1703 if (error != 0) { 1704 device_printf(sc->sc_dev, 1705 "could not map mbuf (error %d)\n", error); 1706 m_freem(mprot); 1707 return error; 1708 } 1709 1710 data->m = mprot; 1711 data->ni = ieee80211_ref_node(ni); 1712 /* ctl frames are not taken into account for amrr */ 1713 data->rix = IEEE80211_FIXED_RATE_NONE; 1714 1715 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1716 segs->ds_addr); 1717 1718 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1719 BUS_DMASYNC_PREWRITE); 1720 1721 sc->txq.queued++; 1722 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1723 1724 return 0; 1725 } 1726 1727 static int 1728 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1729 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1730 { 1731 struct ifnet *ifp = sc->sc_ifp; 1732 struct ieee80211com *ic = ifp->if_l2com; 1733 struct rt2560_tx_desc *desc; 1734 struct rt2560_tx_data *data; 1735 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1736 uint32_t flags; 1737 int nsegs, rate, error; 1738 1739 desc = &sc->prioq.desc[sc->prioq.cur]; 1740 data = &sc->prioq.data[sc->prioq.cur]; 1741 1742 rate = params->ibp_rate0 & IEEE80211_RATE_VAL; 1743 /* XXX validate */ 1744 if (rate == 0) { 1745 /* XXX fall back to mcast/mgmt rate? */ 1746 m_freem(m0); 1747 return EINVAL; 1748 } 1749 1750 flags = 0; 1751 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1752 flags |= RT2560_TX_ACK; 1753 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1754 error = rt2560_sendprot(sc, m0, ni, 1755 params->ibp_flags & IEEE80211_BPF_RTS ? 1756 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1757 rate); 1758 if (error) { 1759 m_freem(m0); 1760 return error; 1761 } 1762 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1763 } 1764 1765 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1766 segs, &nsegs, 0); 1767 if (error != 0) { 1768 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1769 error); 1770 m_freem(m0); 1771 return error; 1772 } 1773 1774 if (bpf_peers_present(ifp->if_bpf)) { 1775 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1776 1777 tap->wt_flags = 0; 1778 tap->wt_rate = rate; 1779 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1780 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1781 tap->wt_antenna = sc->tx_ant; 1782 1783 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1784 } 1785 1786 data->m = m0; 1787 data->ni = ni; 1788 1789 /* XXX need to setup descriptor ourself */ 1790 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1791 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1792 segs->ds_addr); 1793 1794 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1795 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1796 BUS_DMASYNC_PREWRITE); 1797 1798 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1799 m0->m_pkthdr.len, sc->prioq.cur, rate); 1800 1801 /* kick prio */ 1802 sc->prioq.queued++; 1803 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1804 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1805 1806 return 0; 1807 } 1808 1809 static int 1810 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1811 struct ieee80211_node *ni) 1812 { 1813 struct ieee80211vap *vap = ni->ni_vap; 1814 struct ieee80211com *ic = ni->ni_ic; 1815 struct ifnet *ifp = sc->sc_ifp; 1816 struct rt2560_tx_desc *desc; 1817 struct rt2560_tx_data *data; 1818 struct ieee80211_frame *wh; 1819 const struct ieee80211_txparam *tp; 1820 struct ieee80211_key *k; 1821 struct mbuf *mnew; 1822 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1823 uint16_t dur; 1824 uint32_t flags; 1825 int nsegs, rate, error; 1826 1827 wh = mtod(m0, struct ieee80211_frame *); 1828 1829 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1830 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1831 rate = tp->mcastrate; 1832 } else if (m0->m_flags & M_EAPOL) { 1833 rate = tp->mgmtrate; 1834 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1835 rate = tp->ucastrate; 1836 } else { 1837 (void) ieee80211_amrr_choose(ni, &RT2560_NODE(ni)->amrr); 1838 rate = ni->ni_txrate; 1839 } 1840 1841 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1842 k = ieee80211_crypto_encap(ni, m0); 1843 if (k == NULL) { 1844 m_freem(m0); 1845 return ENOBUFS; 1846 } 1847 1848 /* packet header may have moved, reset our local pointer */ 1849 wh = mtod(m0, struct ieee80211_frame *); 1850 } 1851 1852 flags = 0; 1853 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1854 int prot = IEEE80211_PROT_NONE; 1855 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1856 prot = IEEE80211_PROT_RTSCTS; 1857 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1858 ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) 1859 prot = ic->ic_protmode; 1860 if (prot != IEEE80211_PROT_NONE) { 1861 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1862 if (error) { 1863 m_freem(m0); 1864 return error; 1865 } 1866 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1867 } 1868 } 1869 1870 data = &sc->txq.data[sc->txq.cur_encrypt]; 1871 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1872 1873 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1874 segs, &nsegs, 0); 1875 if (error != 0 && error != EFBIG) { 1876 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1877 error); 1878 m_freem(m0); 1879 return error; 1880 } 1881 if (error != 0) { 1882 mnew = m_defrag(m0, M_DONTWAIT); 1883 if (mnew == NULL) { 1884 device_printf(sc->sc_dev, 1885 "could not defragment mbuf\n"); 1886 m_freem(m0); 1887 return ENOBUFS; 1888 } 1889 m0 = mnew; 1890 1891 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1892 m0, segs, &nsegs, 0); 1893 if (error != 0) { 1894 device_printf(sc->sc_dev, 1895 "could not map mbuf (error %d)\n", error); 1896 m_freem(m0); 1897 return error; 1898 } 1899 1900 /* packet header may have moved, reset our local pointer */ 1901 wh = mtod(m0, struct ieee80211_frame *); 1902 } 1903 1904 if (bpf_peers_present(ifp->if_bpf)) { 1905 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1906 1907 tap->wt_flags = 0; 1908 tap->wt_rate = rate; 1909 tap->wt_antenna = sc->tx_ant; 1910 1911 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1912 } 1913 1914 data->m = m0; 1915 data->ni = ni; 1916 1917 /* remember link conditions for rate adaptation algorithm */ 1918 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1919 data->rix = ni->ni_txrate; 1920 /* XXX probably need last rssi value and not avg */ 1921 data->rssi = ic->ic_node_getrssi(ni); 1922 } else 1923 data->rix = IEEE80211_FIXED_RATE_NONE; 1924 1925 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1926 flags |= RT2560_TX_ACK; 1927 1928 dur = ieee80211_ack_duration(sc->sc_rates, 1929 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1930 *(uint16_t *)wh->i_dur = htole16(dur); 1931 } 1932 1933 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1934 segs->ds_addr); 1935 1936 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1937 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1938 BUS_DMASYNC_PREWRITE); 1939 1940 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1941 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1942 1943 /* kick encrypt */ 1944 sc->txq.queued++; 1945 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1946 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1947 1948 return 0; 1949 } 1950 1951 static void 1952 rt2560_start_locked(struct ifnet *ifp) 1953 { 1954 struct rt2560_softc *sc = ifp->if_softc; 1955 struct mbuf *m; 1956 struct ieee80211_node *ni; 1957 1958 RAL_LOCK_ASSERT(sc); 1959 1960 for (;;) { 1961 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1962 if (m == NULL) 1963 break; 1964 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1965 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1966 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1967 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1968 break; 1969 } 1970 1971 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1972 m = ieee80211_encap(ni, m); 1973 if (m == NULL) { 1974 ieee80211_free_node(ni); 1975 ifp->if_oerrors++; 1976 continue; 1977 } 1978 1979 if (rt2560_tx_data(sc, m, ni) != 0) { 1980 ieee80211_free_node(ni); 1981 ifp->if_oerrors++; 1982 break; 1983 } 1984 1985 sc->sc_tx_timer = 5; 1986 } 1987 } 1988 1989 static void 1990 rt2560_start(struct ifnet *ifp) 1991 { 1992 struct rt2560_softc *sc = ifp->if_softc; 1993 1994 RAL_LOCK(sc); 1995 rt2560_start_locked(ifp); 1996 RAL_UNLOCK(sc); 1997 } 1998 1999 static void 2000 rt2560_watchdog(void *arg) 2001 { 2002 struct rt2560_softc *sc = arg; 2003 struct ifnet *ifp = sc->sc_ifp; 2004 2005 RAL_LOCK_ASSERT(sc); 2006 2007 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 2008 2009 if (sc->sc_invalid) /* card ejected */ 2010 return; 2011 2012 rt2560_encryption_intr(sc); 2013 rt2560_tx_intr(sc); 2014 2015 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 2016 if_printf(ifp, "device timeout\n"); 2017 rt2560_init_locked(sc); 2018 ifp->if_oerrors++; 2019 /* NB: callout is reset in rt2560_init() */ 2020 return; 2021 } 2022 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2023 } 2024 2025 static int 2026 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2027 { 2028 struct rt2560_softc *sc = ifp->if_softc; 2029 struct ieee80211com *ic = ifp->if_l2com; 2030 struct ifreq *ifr = (struct ifreq *) data; 2031 int error = 0, startall = 0; 2032 2033 switch (cmd) { 2034 case SIOCSIFFLAGS: 2035 RAL_LOCK(sc); 2036 if (ifp->if_flags & IFF_UP) { 2037 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2038 rt2560_init_locked(sc); 2039 startall = 1; 2040 } else 2041 rt2560_update_promisc(ifp); 2042 } else { 2043 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2044 rt2560_stop_locked(sc); 2045 } 2046 RAL_UNLOCK(sc); 2047 if (startall) 2048 ieee80211_start_all(ic); 2049 break; 2050 case SIOCGIFMEDIA: 2051 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2052 break; 2053 case SIOCGIFADDR: 2054 error = ether_ioctl(ifp, cmd, data); 2055 break; 2056 default: 2057 error = EINVAL; 2058 break; 2059 } 2060 return error; 2061 } 2062 2063 static void 2064 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2065 { 2066 uint32_t tmp; 2067 int ntries; 2068 2069 for (ntries = 0; ntries < 100; ntries++) { 2070 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2071 break; 2072 DELAY(1); 2073 } 2074 if (ntries == 100) { 2075 device_printf(sc->sc_dev, "could not write to BBP\n"); 2076 return; 2077 } 2078 2079 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2080 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2081 2082 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2083 } 2084 2085 static uint8_t 2086 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2087 { 2088 uint32_t val; 2089 int ntries; 2090 2091 for (ntries = 0; ntries < 100; ntries++) { 2092 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2093 break; 2094 DELAY(1); 2095 } 2096 if (ntries == 100) { 2097 device_printf(sc->sc_dev, "could not read from BBP\n"); 2098 return 0; 2099 } 2100 2101 val = RT2560_BBP_BUSY | reg << 8; 2102 RAL_WRITE(sc, RT2560_BBPCSR, val); 2103 2104 for (ntries = 0; ntries < 100; ntries++) { 2105 val = RAL_READ(sc, RT2560_BBPCSR); 2106 if (!(val & RT2560_BBP_BUSY)) 2107 return val & 0xff; 2108 DELAY(1); 2109 } 2110 2111 device_printf(sc->sc_dev, "could not read from BBP\n"); 2112 return 0; 2113 } 2114 2115 static void 2116 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2117 { 2118 uint32_t tmp; 2119 int ntries; 2120 2121 for (ntries = 0; ntries < 100; ntries++) { 2122 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2123 break; 2124 DELAY(1); 2125 } 2126 if (ntries == 100) { 2127 device_printf(sc->sc_dev, "could not write to RF\n"); 2128 return; 2129 } 2130 2131 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2132 (reg & 0x3); 2133 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2134 2135 /* remember last written value in sc */ 2136 sc->rf_regs[reg] = val; 2137 2138 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2139 } 2140 2141 static void 2142 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2143 { 2144 struct ifnet *ifp = sc->sc_ifp; 2145 struct ieee80211com *ic = ifp->if_l2com; 2146 uint8_t power, tmp; 2147 u_int i, chan; 2148 2149 chan = ieee80211_chan2ieee(ic, c); 2150 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2151 2152 sc->sc_rates = ieee80211_get_ratetable(c); 2153 2154 if (IEEE80211_IS_CHAN_2GHZ(c)) 2155 power = min(sc->txpow[chan - 1], 31); 2156 else 2157 power = 31; 2158 2159 /* adjust txpower using ifconfig settings */ 2160 power -= (100 - ic->ic_txpowlimit) / 8; 2161 2162 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2163 2164 switch (sc->rf_rev) { 2165 case RT2560_RF_2522: 2166 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2167 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2168 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2169 break; 2170 2171 case RT2560_RF_2523: 2172 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2173 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2174 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2175 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2176 break; 2177 2178 case RT2560_RF_2524: 2179 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2180 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2181 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2182 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2183 break; 2184 2185 case RT2560_RF_2525: 2186 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2187 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2188 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2189 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2190 2191 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2192 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2193 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2194 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2195 break; 2196 2197 case RT2560_RF_2525E: 2198 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2199 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2200 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2201 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2202 break; 2203 2204 case RT2560_RF_2526: 2205 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2206 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2207 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2208 2209 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2210 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2211 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2212 break; 2213 2214 /* dual-band RF */ 2215 case RT2560_RF_5222: 2216 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2217 2218 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2219 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2220 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2221 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2222 break; 2223 default: 2224 printf("unknown ral rev=%d\n", sc->rf_rev); 2225 } 2226 2227 /* XXX */ 2228 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2229 /* set Japan filter bit for channel 14 */ 2230 tmp = rt2560_bbp_read(sc, 70); 2231 2232 tmp &= ~RT2560_JAPAN_FILTER; 2233 if (chan == 14) 2234 tmp |= RT2560_JAPAN_FILTER; 2235 2236 rt2560_bbp_write(sc, 70, tmp); 2237 2238 /* clear CRC errors */ 2239 RAL_READ(sc, RT2560_CNT0); 2240 } 2241 } 2242 2243 static void 2244 rt2560_set_channel(struct ieee80211com *ic) 2245 { 2246 struct ifnet *ifp = ic->ic_ifp; 2247 struct rt2560_softc *sc = ifp->if_softc; 2248 2249 RAL_LOCK(sc); 2250 rt2560_set_chan(sc, ic->ic_curchan); 2251 2252 sc->sc_txtap.wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 2253 sc->sc_txtap.wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 2254 sc->sc_rxtap.wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 2255 sc->sc_rxtap.wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 2256 RAL_UNLOCK(sc); 2257 2258 } 2259 2260 #if 0 2261 /* 2262 * Disable RF auto-tuning. 2263 */ 2264 static void 2265 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2266 { 2267 uint32_t tmp; 2268 2269 if (sc->rf_rev != RT2560_RF_2523) { 2270 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2271 rt2560_rf_write(sc, RAL_RF1, tmp); 2272 } 2273 2274 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2275 rt2560_rf_write(sc, RAL_RF3, tmp); 2276 2277 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2278 } 2279 #endif 2280 2281 /* 2282 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2283 * synchronization. 2284 */ 2285 static void 2286 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2287 { 2288 struct ifnet *ifp = sc->sc_ifp; 2289 struct ieee80211com *ic = ifp->if_l2com; 2290 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2291 uint16_t logcwmin, preload; 2292 uint32_t tmp; 2293 2294 /* first, disable TSF synchronization */ 2295 RAL_WRITE(sc, RT2560_CSR14, 0); 2296 2297 tmp = 16 * vap->iv_bss->ni_intval; 2298 RAL_WRITE(sc, RT2560_CSR12, tmp); 2299 2300 RAL_WRITE(sc, RT2560_CSR13, 0); 2301 2302 logcwmin = 5; 2303 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2304 tmp = logcwmin << 16 | preload; 2305 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2306 2307 /* finally, enable TSF synchronization */ 2308 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2309 if (ic->ic_opmode == IEEE80211_M_STA) 2310 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2311 else 2312 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2313 RT2560_ENABLE_BEACON_GENERATOR; 2314 RAL_WRITE(sc, RT2560_CSR14, tmp); 2315 2316 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2317 } 2318 2319 static void 2320 rt2560_update_plcp(struct rt2560_softc *sc) 2321 { 2322 struct ifnet *ifp = sc->sc_ifp; 2323 struct ieee80211com *ic = ifp->if_l2com; 2324 2325 /* no short preamble for 1Mbps */ 2326 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2327 2328 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2329 /* values taken from the reference driver */ 2330 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2331 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2332 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2333 } else { 2334 /* same values as above or'ed 0x8 */ 2335 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2336 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2337 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2338 } 2339 2340 DPRINTF(sc, "updating PLCP for %s preamble\n", 2341 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2342 } 2343 2344 /* 2345 * This function can be called by ieee80211_set_shortslottime(). Refer to 2346 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2347 */ 2348 static void 2349 rt2560_update_slot(struct ifnet *ifp) 2350 { 2351 struct rt2560_softc *sc = ifp->if_softc; 2352 struct ieee80211com *ic = ifp->if_l2com; 2353 uint8_t slottime; 2354 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2355 uint32_t tmp; 2356 2357 #ifndef FORCE_SLOTTIME 2358 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2359 #else 2360 /* 2361 * Setting slot time according to "short slot time" capability 2362 * in beacon/probe_resp seems to cause problem to acknowledge 2363 * certain AP's data frames transimitted at CCK/DS rates: the 2364 * problematic AP keeps retransmitting data frames, probably 2365 * because MAC level acks are not received by hardware. 2366 * So we cheat a little bit here by claiming we are capable of 2367 * "short slot time" but setting hardware slot time to the normal 2368 * slot time. ral(4) does not seem to have trouble to receive 2369 * frames transmitted using short slot time even if hardware 2370 * slot time is set to normal slot time. If we didn't use this 2371 * trick, we would have to claim that short slot time is not 2372 * supported; this would give relative poor RX performance 2373 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2374 * slot time. 2375 */ 2376 slottime = 20; 2377 #endif 2378 2379 /* update the MAC slot boundaries */ 2380 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2381 tx_pifs = tx_sifs + slottime; 2382 tx_difs = tx_sifs + 2 * slottime; 2383 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2384 2385 tmp = RAL_READ(sc, RT2560_CSR11); 2386 tmp = (tmp & ~0x1f00) | slottime << 8; 2387 RAL_WRITE(sc, RT2560_CSR11, tmp); 2388 2389 tmp = tx_pifs << 16 | tx_sifs; 2390 RAL_WRITE(sc, RT2560_CSR18, tmp); 2391 2392 tmp = eifs << 16 | tx_difs; 2393 RAL_WRITE(sc, RT2560_CSR19, tmp); 2394 2395 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2396 } 2397 2398 static void 2399 rt2560_set_basicrates(struct rt2560_softc *sc) 2400 { 2401 struct ifnet *ifp = sc->sc_ifp; 2402 struct ieee80211com *ic = ifp->if_l2com; 2403 2404 /* update basic rate set */ 2405 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2406 /* 11b basic rates: 1, 2Mbps */ 2407 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2408 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2409 /* 11a basic rates: 6, 12, 24Mbps */ 2410 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2411 } else { 2412 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2413 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2414 } 2415 } 2416 2417 static void 2418 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2419 { 2420 uint32_t tmp; 2421 2422 /* set ON period to 70ms and OFF period to 30ms */ 2423 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2424 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2425 } 2426 2427 static void 2428 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2429 { 2430 uint32_t tmp; 2431 2432 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2433 RAL_WRITE(sc, RT2560_CSR5, tmp); 2434 2435 tmp = bssid[4] | bssid[5] << 8; 2436 RAL_WRITE(sc, RT2560_CSR6, tmp); 2437 2438 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2439 } 2440 2441 static void 2442 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2443 { 2444 uint32_t tmp; 2445 2446 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2447 RAL_WRITE(sc, RT2560_CSR3, tmp); 2448 2449 tmp = addr[4] | addr[5] << 8; 2450 RAL_WRITE(sc, RT2560_CSR4, tmp); 2451 2452 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2453 } 2454 2455 static void 2456 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2457 { 2458 uint32_t tmp; 2459 2460 tmp = RAL_READ(sc, RT2560_CSR3); 2461 addr[0] = tmp & 0xff; 2462 addr[1] = (tmp >> 8) & 0xff; 2463 addr[2] = (tmp >> 16) & 0xff; 2464 addr[3] = (tmp >> 24); 2465 2466 tmp = RAL_READ(sc, RT2560_CSR4); 2467 addr[4] = tmp & 0xff; 2468 addr[5] = (tmp >> 8) & 0xff; 2469 } 2470 2471 static void 2472 rt2560_update_promisc(struct ifnet *ifp) 2473 { 2474 struct rt2560_softc *sc = ifp->if_softc; 2475 uint32_t tmp; 2476 2477 tmp = RAL_READ(sc, RT2560_RXCSR0); 2478 2479 tmp &= ~RT2560_DROP_NOT_TO_ME; 2480 if (!(ifp->if_flags & IFF_PROMISC)) 2481 tmp |= RT2560_DROP_NOT_TO_ME; 2482 2483 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2484 2485 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2486 "entering" : "leaving"); 2487 } 2488 2489 static const char * 2490 rt2560_get_rf(int rev) 2491 { 2492 switch (rev) { 2493 case RT2560_RF_2522: return "RT2522"; 2494 case RT2560_RF_2523: return "RT2523"; 2495 case RT2560_RF_2524: return "RT2524"; 2496 case RT2560_RF_2525: return "RT2525"; 2497 case RT2560_RF_2525E: return "RT2525e"; 2498 case RT2560_RF_2526: return "RT2526"; 2499 case RT2560_RF_5222: return "RT5222"; 2500 default: return "unknown"; 2501 } 2502 } 2503 2504 static void 2505 rt2560_read_config(struct rt2560_softc *sc) 2506 { 2507 uint16_t val; 2508 int i; 2509 2510 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2511 sc->rf_rev = (val >> 11) & 0x7; 2512 sc->hw_radio = (val >> 10) & 0x1; 2513 sc->led_mode = (val >> 6) & 0x7; 2514 sc->rx_ant = (val >> 4) & 0x3; 2515 sc->tx_ant = (val >> 2) & 0x3; 2516 sc->nb_ant = val & 0x3; 2517 2518 /* read default values for BBP registers */ 2519 for (i = 0; i < 16; i++) { 2520 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2521 if (val == 0 || val == 0xffff) 2522 continue; 2523 2524 sc->bbp_prom[i].reg = val >> 8; 2525 sc->bbp_prom[i].val = val & 0xff; 2526 } 2527 2528 /* read Tx power for all b/g channels */ 2529 for (i = 0; i < 14 / 2; i++) { 2530 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2531 sc->txpow[i * 2] = val & 0xff; 2532 sc->txpow[i * 2 + 1] = val >> 8; 2533 } 2534 for (i = 0; i < 14; ++i) { 2535 if (sc->txpow[i] > 31) 2536 sc->txpow[i] = 24; 2537 } 2538 2539 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2540 if ((val & 0xff) == 0xff) 2541 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2542 else 2543 sc->rssi_corr = val & 0xff; 2544 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2545 sc->rssi_corr, val); 2546 } 2547 2548 2549 static void 2550 rt2560_scan_start(struct ieee80211com *ic) 2551 { 2552 struct ifnet *ifp = ic->ic_ifp; 2553 struct rt2560_softc *sc = ifp->if_softc; 2554 2555 /* abort TSF synchronization */ 2556 RAL_WRITE(sc, RT2560_CSR14, 0); 2557 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2558 } 2559 2560 static void 2561 rt2560_scan_end(struct ieee80211com *ic) 2562 { 2563 struct ifnet *ifp = ic->ic_ifp; 2564 struct rt2560_softc *sc = ifp->if_softc; 2565 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2566 2567 rt2560_enable_tsf_sync(sc); 2568 /* XXX keep local copy */ 2569 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2570 } 2571 2572 static int 2573 rt2560_bbp_init(struct rt2560_softc *sc) 2574 { 2575 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2576 int i, ntries; 2577 2578 /* wait for BBP to be ready */ 2579 for (ntries = 0; ntries < 100; ntries++) { 2580 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2581 break; 2582 DELAY(1); 2583 } 2584 if (ntries == 100) { 2585 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2586 return EIO; 2587 } 2588 2589 /* initialize BBP registers to default values */ 2590 for (i = 0; i < N(rt2560_def_bbp); i++) { 2591 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2592 rt2560_def_bbp[i].val); 2593 } 2594 2595 /* initialize BBP registers to values stored in EEPROM */ 2596 for (i = 0; i < 16; i++) { 2597 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2598 break; 2599 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2600 } 2601 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2602 2603 return 0; 2604 #undef N 2605 } 2606 2607 static void 2608 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2609 { 2610 uint32_t tmp; 2611 uint8_t tx; 2612 2613 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2614 if (antenna == 1) 2615 tx |= RT2560_BBP_ANTA; 2616 else if (antenna == 2) 2617 tx |= RT2560_BBP_ANTB; 2618 else 2619 tx |= RT2560_BBP_DIVERSITY; 2620 2621 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2622 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2623 sc->rf_rev == RT2560_RF_5222) 2624 tx |= RT2560_BBP_FLIPIQ; 2625 2626 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2627 2628 /* update values for CCK and OFDM in BBPCSR1 */ 2629 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2630 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2631 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2632 } 2633 2634 static void 2635 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2636 { 2637 uint8_t rx; 2638 2639 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2640 if (antenna == 1) 2641 rx |= RT2560_BBP_ANTA; 2642 else if (antenna == 2) 2643 rx |= RT2560_BBP_ANTB; 2644 else 2645 rx |= RT2560_BBP_DIVERSITY; 2646 2647 /* need to force no I/Q flip for RF 2525e and 2526 */ 2648 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2649 rx &= ~RT2560_BBP_FLIPIQ; 2650 2651 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2652 } 2653 2654 static void 2655 rt2560_init_locked(struct rt2560_softc *sc) 2656 { 2657 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2658 struct ifnet *ifp = sc->sc_ifp; 2659 struct ieee80211com *ic = ifp->if_l2com; 2660 uint32_t tmp; 2661 int i; 2662 2663 RAL_LOCK_ASSERT(sc); 2664 2665 rt2560_stop_locked(sc); 2666 2667 /* setup tx rings */ 2668 tmp = RT2560_PRIO_RING_COUNT << 24 | 2669 RT2560_ATIM_RING_COUNT << 16 | 2670 RT2560_TX_RING_COUNT << 8 | 2671 RT2560_TX_DESC_SIZE; 2672 2673 /* rings must be initialized in this exact order */ 2674 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2675 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2676 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2677 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2678 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2679 2680 /* setup rx ring */ 2681 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2682 2683 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2684 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2685 2686 /* initialize MAC registers to default values */ 2687 for (i = 0; i < N(rt2560_def_mac); i++) 2688 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2689 2690 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp)); 2691 rt2560_set_macaddr(sc, ic->ic_myaddr); 2692 2693 /* set basic rate set (will be updated later) */ 2694 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2695 2696 rt2560_update_slot(ifp); 2697 rt2560_update_plcp(sc); 2698 rt2560_update_led(sc, 0, 0); 2699 2700 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2701 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2702 2703 if (rt2560_bbp_init(sc) != 0) { 2704 rt2560_stop(sc); 2705 RAL_UNLOCK(sc); 2706 return; 2707 } 2708 2709 rt2560_set_txantenna(sc, sc->tx_ant); 2710 rt2560_set_rxantenna(sc, sc->rx_ant); 2711 2712 /* set default BSS channel */ 2713 rt2560_set_chan(sc, ic->ic_curchan); 2714 2715 /* kick Rx */ 2716 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2717 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2718 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2719 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2720 tmp |= RT2560_DROP_TODS; 2721 if (!(ifp->if_flags & IFF_PROMISC)) 2722 tmp |= RT2560_DROP_NOT_TO_ME; 2723 } 2724 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2725 2726 /* clear old FCS and Rx FIFO errors */ 2727 RAL_READ(sc, RT2560_CNT0); 2728 RAL_READ(sc, RT2560_CNT4); 2729 2730 /* clear any pending interrupts */ 2731 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2732 2733 /* enable interrupts */ 2734 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2735 2736 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2737 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2738 2739 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2740 #undef N 2741 } 2742 2743 static void 2744 rt2560_init(void *priv) 2745 { 2746 struct rt2560_softc *sc = priv; 2747 struct ifnet *ifp = sc->sc_ifp; 2748 struct ieee80211com *ic = ifp->if_l2com; 2749 2750 RAL_LOCK(sc); 2751 rt2560_init_locked(sc); 2752 RAL_UNLOCK(sc); 2753 2754 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2755 ieee80211_start_all(ic); /* start all vap's */ 2756 } 2757 2758 static void 2759 rt2560_stop_locked(struct rt2560_softc *sc) 2760 { 2761 struct ifnet *ifp = sc->sc_ifp; 2762 volatile int *flags = &sc->sc_flags; 2763 2764 RAL_LOCK_ASSERT(sc); 2765 2766 while (*flags & RT2560_F_INPUT_RUNNING) 2767 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2768 2769 callout_stop(&sc->watchdog_ch); 2770 sc->sc_tx_timer = 0; 2771 2772 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2773 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2774 2775 /* abort Tx */ 2776 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2777 2778 /* disable Rx */ 2779 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2780 2781 /* reset ASIC (imply reset BBP) */ 2782 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2783 RAL_WRITE(sc, RT2560_CSR1, 0); 2784 2785 /* disable interrupts */ 2786 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2787 2788 /* reset Tx and Rx rings */ 2789 rt2560_reset_tx_ring(sc, &sc->txq); 2790 rt2560_reset_tx_ring(sc, &sc->atimq); 2791 rt2560_reset_tx_ring(sc, &sc->prioq); 2792 rt2560_reset_tx_ring(sc, &sc->bcnq); 2793 rt2560_reset_rx_ring(sc, &sc->rxq); 2794 } 2795 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2796 } 2797 2798 void 2799 rt2560_stop(void *arg) 2800 { 2801 struct rt2560_softc *sc = arg; 2802 2803 RAL_LOCK(sc); 2804 rt2560_stop_locked(sc); 2805 RAL_UNLOCK(sc); 2806 } 2807 2808 static int 2809 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2810 const struct ieee80211_bpf_params *params) 2811 { 2812 struct ieee80211com *ic = ni->ni_ic; 2813 struct ifnet *ifp = ic->ic_ifp; 2814 struct rt2560_softc *sc = ifp->if_softc; 2815 2816 RAL_LOCK(sc); 2817 2818 /* prevent management frames from being sent if we're not ready */ 2819 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2820 RAL_UNLOCK(sc); 2821 m_freem(m); 2822 ieee80211_free_node(ni); 2823 return ENETDOWN; 2824 } 2825 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2826 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2827 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2828 RAL_UNLOCK(sc); 2829 m_freem(m); 2830 ieee80211_free_node(ni); 2831 return ENOBUFS; /* XXX */ 2832 } 2833 2834 ifp->if_opackets++; 2835 2836 if (params == NULL) { 2837 /* 2838 * Legacy path; interpret frame contents to decide 2839 * precisely how to send the frame. 2840 */ 2841 if (rt2560_tx_mgt(sc, m, ni) != 0) 2842 goto bad; 2843 } else { 2844 /* 2845 * Caller supplied explicit parameters to use in 2846 * sending the frame. 2847 */ 2848 if (rt2560_tx_raw(sc, m, ni, params)) 2849 goto bad; 2850 } 2851 sc->sc_tx_timer = 5; 2852 2853 RAL_UNLOCK(sc); 2854 2855 return 0; 2856 bad: 2857 ifp->if_oerrors++; 2858 ieee80211_free_node(ni); 2859 RAL_UNLOCK(sc); 2860 return EIO; /* XXX */ 2861 } 2862