1 /* $FreeBSD$ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/cdefs.h> 21 __FBSDID("$FreeBSD$"); 22 23 /*- 24 * Ralink Technology RT2560 chipset driver 25 * http://www.ralinktech.com/ 26 */ 27 28 #include <sys/param.h> 29 #include <sys/sysctl.h> 30 #include <sys/sockio.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/endian.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 46 #include <net/bpf.h> 47 #include <net/if.h> 48 #include <net/if_var.h> 49 #include <net/if_arp.h> 50 #include <net/ethernet.h> 51 #include <net/if_dl.h> 52 #include <net/if_media.h> 53 #include <net/if_types.h> 54 55 #include <net80211/ieee80211_var.h> 56 #include <net80211/ieee80211_radiotap.h> 57 #include <net80211/ieee80211_regdomain.h> 58 #include <net80211/ieee80211_ratectl.h> 59 60 #include <netinet/in.h> 61 #include <netinet/in_systm.h> 62 #include <netinet/in_var.h> 63 #include <netinet/ip.h> 64 #include <netinet/if_ether.h> 65 66 #include <dev/ral/rt2560reg.h> 67 #include <dev/ral/rt2560var.h> 68 69 #define RT2560_RSSI(sc, rssi) \ 70 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 71 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 72 73 #define RAL_DEBUG 74 #ifdef RAL_DEBUG 75 #define DPRINTF(sc, fmt, ...) do { \ 76 if (sc->sc_debug > 0) \ 77 printf(fmt, __VA_ARGS__); \ 78 } while (0) 79 #define DPRINTFN(sc, n, fmt, ...) do { \ 80 if (sc->sc_debug >= (n)) \ 81 printf(fmt, __VA_ARGS__); \ 82 } while (0) 83 #else 84 #define DPRINTF(sc, fmt, ...) 85 #define DPRINTFN(sc, n, fmt, ...) 86 #endif 87 88 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 89 const char [IFNAMSIZ], int, enum ieee80211_opmode, 90 int, const uint8_t [IEEE80211_ADDR_LEN], 91 const uint8_t [IEEE80211_ADDR_LEN]); 92 static void rt2560_vap_delete(struct ieee80211vap *); 93 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 94 int); 95 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 96 struct rt2560_tx_ring *, int); 97 static void rt2560_reset_tx_ring(struct rt2560_softc *, 98 struct rt2560_tx_ring *); 99 static void rt2560_free_tx_ring(struct rt2560_softc *, 100 struct rt2560_tx_ring *); 101 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 102 struct rt2560_rx_ring *, int); 103 static void rt2560_reset_rx_ring(struct rt2560_softc *, 104 struct rt2560_rx_ring *); 105 static void rt2560_free_rx_ring(struct rt2560_softc *, 106 struct rt2560_rx_ring *); 107 static int rt2560_newstate(struct ieee80211vap *, 108 enum ieee80211_state, int); 109 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 110 static void rt2560_encryption_intr(struct rt2560_softc *); 111 static void rt2560_tx_intr(struct rt2560_softc *); 112 static void rt2560_prio_intr(struct rt2560_softc *); 113 static void rt2560_decryption_intr(struct rt2560_softc *); 114 static void rt2560_rx_intr(struct rt2560_softc *); 115 static void rt2560_beacon_update(struct ieee80211vap *, int item); 116 static void rt2560_beacon_expire(struct rt2560_softc *); 117 static void rt2560_wakeup_expire(struct rt2560_softc *); 118 static void rt2560_scan_start(struct ieee80211com *); 119 static void rt2560_scan_end(struct ieee80211com *); 120 static void rt2560_set_channel(struct ieee80211com *); 121 static void rt2560_setup_tx_desc(struct rt2560_softc *, 122 struct rt2560_tx_desc *, uint32_t, int, int, int, 123 bus_addr_t); 124 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 125 struct ieee80211_node *); 126 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 129 struct ieee80211_node *); 130 static void rt2560_start_locked(struct ifnet *); 131 static void rt2560_start(struct ifnet *); 132 static void rt2560_watchdog(void *); 133 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 134 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 135 uint8_t); 136 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 137 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 138 uint32_t); 139 static void rt2560_set_chan(struct rt2560_softc *, 140 struct ieee80211_channel *); 141 #if 0 142 static void rt2560_disable_rf_tune(struct rt2560_softc *); 143 #endif 144 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 145 static void rt2560_enable_tsf(struct rt2560_softc *); 146 static void rt2560_update_plcp(struct rt2560_softc *); 147 static void rt2560_update_slot(struct ieee80211com *); 148 static void rt2560_set_basicrates(struct rt2560_softc *, 149 const struct ieee80211_rateset *); 150 static void rt2560_update_led(struct rt2560_softc *, int, int); 151 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 152 static void rt2560_set_macaddr(struct rt2560_softc *, 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 struct { 190 uint8_t chan; 191 uint32_t r1, r2, r4; 192 } rt2560_rf5222[] = { 193 RT2560_RF5222 194 }; 195 196 int 197 rt2560_attach(device_t dev, int id) 198 { 199 struct rt2560_softc *sc = device_get_softc(dev); 200 struct ieee80211com *ic; 201 struct ifnet *ifp; 202 int error; 203 uint8_t bands; 204 uint8_t macaddr[IEEE80211_ADDR_LEN]; 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, macaddr); 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, ifqmaxlen); 272 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 273 IFQ_SET_READY(&ifp->if_snd); 274 275 ic->ic_ifp = ifp; 276 ic->ic_softc = sc; 277 ic->ic_name = device_get_nameunit(dev); 278 ic->ic_opmode = IEEE80211_M_STA; 279 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 280 281 /* set device capabilities */ 282 ic->ic_caps = 283 IEEE80211_C_STA /* station mode */ 284 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 285 | IEEE80211_C_HOSTAP /* hostap mode */ 286 | IEEE80211_C_MONITOR /* monitor mode */ 287 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 288 | IEEE80211_C_WDS /* 4-address traffic works */ 289 | IEEE80211_C_MBSS /* mesh point link mode */ 290 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 291 | IEEE80211_C_SHSLOT /* short slot time supported */ 292 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 293 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 294 #ifdef notyet 295 | IEEE80211_C_TXFRAG /* handle tx frags */ 296 #endif 297 ; 298 299 bands = 0; 300 setbit(&bands, IEEE80211_MODE_11B); 301 setbit(&bands, IEEE80211_MODE_11G); 302 if (sc->rf_rev == RT2560_RF_5222) 303 setbit(&bands, IEEE80211_MODE_11A); 304 ieee80211_init_channels(ic, NULL, &bands); 305 306 ieee80211_ifattach(ic, macaddr); 307 ic->ic_raw_xmit = rt2560_raw_xmit; 308 ic->ic_updateslot = rt2560_update_slot; 309 ic->ic_update_promisc = rt2560_update_promisc; 310 ic->ic_scan_start = rt2560_scan_start; 311 ic->ic_scan_end = rt2560_scan_end; 312 ic->ic_set_channel = rt2560_set_channel; 313 314 ic->ic_vap_create = rt2560_vap_create; 315 ic->ic_vap_delete = rt2560_vap_delete; 316 317 ieee80211_radiotap_attach(ic, 318 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 319 RT2560_TX_RADIOTAP_PRESENT, 320 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 321 RT2560_RX_RADIOTAP_PRESENT); 322 323 /* 324 * Add a few sysctl knobs. 325 */ 326 #ifdef RAL_DEBUG 327 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 328 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 329 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 330 #endif 331 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 333 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 334 335 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 336 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 337 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 338 339 if (bootverbose) 340 ieee80211_announce(ic); 341 342 return 0; 343 344 fail6: rt2560_free_rx_ring(sc, &sc->rxq); 345 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 346 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 347 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 348 fail2: rt2560_free_tx_ring(sc, &sc->txq); 349 fail1: mtx_destroy(&sc->sc_mtx); 350 351 return ENXIO; 352 } 353 354 int 355 rt2560_detach(void *xsc) 356 { 357 struct rt2560_softc *sc = xsc; 358 struct ifnet *ifp = sc->sc_ifp; 359 struct ieee80211com *ic = ifp->if_l2com; 360 361 rt2560_stop(sc); 362 363 ieee80211_ifdetach(ic); 364 365 rt2560_free_tx_ring(sc, &sc->txq); 366 rt2560_free_tx_ring(sc, &sc->atimq); 367 rt2560_free_tx_ring(sc, &sc->prioq); 368 rt2560_free_tx_ring(sc, &sc->bcnq); 369 rt2560_free_rx_ring(sc, &sc->rxq); 370 371 if_free(ifp); 372 373 mtx_destroy(&sc->sc_mtx); 374 375 return 0; 376 } 377 378 static struct ieee80211vap * 379 rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 380 enum ieee80211_opmode opmode, int flags, 381 const uint8_t bssid[IEEE80211_ADDR_LEN], 382 const uint8_t mac[IEEE80211_ADDR_LEN]) 383 { 384 struct ifnet *ifp = ic->ic_ifp; 385 struct rt2560_vap *rvp; 386 struct ieee80211vap *vap; 387 388 switch (opmode) { 389 case IEEE80211_M_STA: 390 case IEEE80211_M_IBSS: 391 case IEEE80211_M_AHDEMO: 392 case IEEE80211_M_MONITOR: 393 case IEEE80211_M_HOSTAP: 394 case IEEE80211_M_MBSS: 395 /* XXXRP: TBD */ 396 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 397 if_printf(ifp, "only 1 vap supported\n"); 398 return NULL; 399 } 400 if (opmode == IEEE80211_M_STA) 401 flags |= IEEE80211_CLONE_NOBEACONS; 402 break; 403 case IEEE80211_M_WDS: 404 if (TAILQ_EMPTY(&ic->ic_vaps) || 405 ic->ic_opmode != IEEE80211_M_HOSTAP) { 406 if_printf(ifp, "wds only supported in ap mode\n"); 407 return NULL; 408 } 409 /* 410 * Silently remove any request for a unique 411 * bssid; WDS vap's always share the local 412 * mac address. 413 */ 414 flags &= ~IEEE80211_CLONE_BSSID; 415 break; 416 default: 417 if_printf(ifp, "unknown opmode %d\n", opmode); 418 return NULL; 419 } 420 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 421 M_80211_VAP, M_NOWAIT | M_ZERO); 422 if (rvp == NULL) 423 return NULL; 424 vap = &rvp->ral_vap; 425 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 426 427 /* override state transition machine */ 428 rvp->ral_newstate = vap->iv_newstate; 429 vap->iv_newstate = rt2560_newstate; 430 vap->iv_update_beacon = rt2560_beacon_update; 431 432 ieee80211_ratectl_init(vap); 433 /* complete setup */ 434 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 435 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 436 ic->ic_opmode = opmode; 437 return vap; 438 } 439 440 static void 441 rt2560_vap_delete(struct ieee80211vap *vap) 442 { 443 struct rt2560_vap *rvp = RT2560_VAP(vap); 444 445 ieee80211_ratectl_deinit(vap); 446 ieee80211_vap_detach(vap); 447 free(rvp, M_80211_VAP); 448 } 449 450 void 451 rt2560_resume(void *xsc) 452 { 453 struct rt2560_softc *sc = xsc; 454 struct ifnet *ifp = sc->sc_ifp; 455 456 if (ifp->if_flags & IFF_UP) 457 rt2560_init(sc); 458 } 459 460 static void 461 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 462 { 463 if (error != 0) 464 return; 465 466 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 467 468 *(bus_addr_t *)arg = segs[0].ds_addr; 469 } 470 471 static int 472 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 473 int count) 474 { 475 int i, error; 476 477 ring->count = count; 478 ring->queued = 0; 479 ring->cur = ring->next = 0; 480 ring->cur_encrypt = ring->next_encrypt = 0; 481 482 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 483 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 484 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 485 0, NULL, NULL, &ring->desc_dmat); 486 if (error != 0) { 487 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 488 goto fail; 489 } 490 491 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 492 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 493 if (error != 0) { 494 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 495 goto fail; 496 } 497 498 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 499 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 500 0); 501 if (error != 0) { 502 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 503 goto fail; 504 } 505 506 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 507 M_NOWAIT | M_ZERO); 508 if (ring->data == NULL) { 509 device_printf(sc->sc_dev, "could not allocate soft data\n"); 510 error = ENOMEM; 511 goto fail; 512 } 513 514 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 515 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 516 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 517 &ring->data_dmat); 518 if (error != 0) { 519 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 520 goto fail; 521 } 522 523 for (i = 0; i < count; i++) { 524 error = bus_dmamap_create(ring->data_dmat, 0, 525 &ring->data[i].map); 526 if (error != 0) { 527 device_printf(sc->sc_dev, "could not create DMA map\n"); 528 goto fail; 529 } 530 } 531 532 return 0; 533 534 fail: rt2560_free_tx_ring(sc, ring); 535 return error; 536 } 537 538 static void 539 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 540 { 541 struct rt2560_tx_desc *desc; 542 struct rt2560_tx_data *data; 543 int i; 544 545 for (i = 0; i < ring->count; i++) { 546 desc = &ring->desc[i]; 547 data = &ring->data[i]; 548 549 if (data->m != NULL) { 550 bus_dmamap_sync(ring->data_dmat, data->map, 551 BUS_DMASYNC_POSTWRITE); 552 bus_dmamap_unload(ring->data_dmat, data->map); 553 m_freem(data->m); 554 data->m = NULL; 555 } 556 557 if (data->ni != NULL) { 558 ieee80211_free_node(data->ni); 559 data->ni = NULL; 560 } 561 562 desc->flags = 0; 563 } 564 565 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 566 567 ring->queued = 0; 568 ring->cur = ring->next = 0; 569 ring->cur_encrypt = ring->next_encrypt = 0; 570 } 571 572 static void 573 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 574 { 575 struct rt2560_tx_data *data; 576 int i; 577 578 if (ring->desc != NULL) { 579 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 580 BUS_DMASYNC_POSTWRITE); 581 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 582 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 583 } 584 585 if (ring->desc_dmat != NULL) 586 bus_dma_tag_destroy(ring->desc_dmat); 587 588 if (ring->data != NULL) { 589 for (i = 0; i < ring->count; i++) { 590 data = &ring->data[i]; 591 592 if (data->m != NULL) { 593 bus_dmamap_sync(ring->data_dmat, data->map, 594 BUS_DMASYNC_POSTWRITE); 595 bus_dmamap_unload(ring->data_dmat, data->map); 596 m_freem(data->m); 597 } 598 599 if (data->ni != NULL) 600 ieee80211_free_node(data->ni); 601 602 if (data->map != NULL) 603 bus_dmamap_destroy(ring->data_dmat, data->map); 604 } 605 606 free(ring->data, M_DEVBUF); 607 } 608 609 if (ring->data_dmat != NULL) 610 bus_dma_tag_destroy(ring->data_dmat); 611 } 612 613 static int 614 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 615 int count) 616 { 617 struct rt2560_rx_desc *desc; 618 struct rt2560_rx_data *data; 619 bus_addr_t physaddr; 620 int i, error; 621 622 ring->count = count; 623 ring->cur = ring->next = 0; 624 ring->cur_decrypt = 0; 625 626 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 627 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 628 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 629 0, NULL, NULL, &ring->desc_dmat); 630 if (error != 0) { 631 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 632 goto fail; 633 } 634 635 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 636 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 637 if (error != 0) { 638 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 639 goto fail; 640 } 641 642 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 643 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 644 0); 645 if (error != 0) { 646 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 647 goto fail; 648 } 649 650 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 651 M_NOWAIT | M_ZERO); 652 if (ring->data == NULL) { 653 device_printf(sc->sc_dev, "could not allocate soft data\n"); 654 error = ENOMEM; 655 goto fail; 656 } 657 658 /* 659 * Pre-allocate Rx buffers and populate Rx ring. 660 */ 661 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 662 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 663 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 664 if (error != 0) { 665 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 666 goto fail; 667 } 668 669 for (i = 0; i < count; i++) { 670 desc = &sc->rxq.desc[i]; 671 data = &sc->rxq.data[i]; 672 673 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 674 if (error != 0) { 675 device_printf(sc->sc_dev, "could not create DMA map\n"); 676 goto fail; 677 } 678 679 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 680 if (data->m == NULL) { 681 device_printf(sc->sc_dev, 682 "could not allocate rx mbuf\n"); 683 error = ENOMEM; 684 goto fail; 685 } 686 687 error = bus_dmamap_load(ring->data_dmat, data->map, 688 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 689 &physaddr, 0); 690 if (error != 0) { 691 device_printf(sc->sc_dev, 692 "could not load rx buf DMA map"); 693 goto fail; 694 } 695 696 desc->flags = htole32(RT2560_RX_BUSY); 697 desc->physaddr = htole32(physaddr); 698 } 699 700 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 701 702 return 0; 703 704 fail: rt2560_free_rx_ring(sc, ring); 705 return error; 706 } 707 708 static void 709 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 710 { 711 int i; 712 713 for (i = 0; i < ring->count; i++) { 714 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 715 ring->data[i].drop = 0; 716 } 717 718 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 719 720 ring->cur = ring->next = 0; 721 ring->cur_decrypt = 0; 722 } 723 724 static void 725 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 726 { 727 struct rt2560_rx_data *data; 728 int i; 729 730 if (ring->desc != NULL) { 731 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 732 BUS_DMASYNC_POSTWRITE); 733 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 734 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 735 } 736 737 if (ring->desc_dmat != NULL) 738 bus_dma_tag_destroy(ring->desc_dmat); 739 740 if (ring->data != NULL) { 741 for (i = 0; i < ring->count; i++) { 742 data = &ring->data[i]; 743 744 if (data->m != NULL) { 745 bus_dmamap_sync(ring->data_dmat, data->map, 746 BUS_DMASYNC_POSTREAD); 747 bus_dmamap_unload(ring->data_dmat, data->map); 748 m_freem(data->m); 749 } 750 751 if (data->map != NULL) 752 bus_dmamap_destroy(ring->data_dmat, data->map); 753 } 754 755 free(ring->data, M_DEVBUF); 756 } 757 758 if (ring->data_dmat != NULL) 759 bus_dma_tag_destroy(ring->data_dmat); 760 } 761 762 static int 763 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 764 { 765 struct rt2560_vap *rvp = RT2560_VAP(vap); 766 struct ifnet *ifp = vap->iv_ic->ic_ifp; 767 struct rt2560_softc *sc = ifp->if_softc; 768 int error; 769 770 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 771 /* abort TSF synchronization */ 772 RAL_WRITE(sc, RT2560_CSR14, 0); 773 774 /* turn association led off */ 775 rt2560_update_led(sc, 0, 0); 776 } 777 778 error = rvp->ral_newstate(vap, nstate, arg); 779 780 if (error == 0 && nstate == IEEE80211_S_RUN) { 781 struct ieee80211_node *ni = vap->iv_bss; 782 struct mbuf *m; 783 784 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 785 rt2560_update_plcp(sc); 786 rt2560_set_basicrates(sc, &ni->ni_rates); 787 rt2560_set_bssid(sc, ni->ni_bssid); 788 } 789 790 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 791 vap->iv_opmode == IEEE80211_M_IBSS || 792 vap->iv_opmode == IEEE80211_M_MBSS) { 793 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 794 if (m == NULL) { 795 if_printf(ifp, "could not allocate beacon\n"); 796 return ENOBUFS; 797 } 798 ieee80211_ref_node(ni); 799 error = rt2560_tx_bcn(sc, m, ni); 800 if (error != 0) 801 return error; 802 } 803 804 /* turn assocation led on */ 805 rt2560_update_led(sc, 1, 0); 806 807 if (vap->iv_opmode != IEEE80211_M_MONITOR) 808 rt2560_enable_tsf_sync(sc); 809 else 810 rt2560_enable_tsf(sc); 811 } 812 return error; 813 } 814 815 /* 816 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 817 * 93C66). 818 */ 819 static uint16_t 820 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 821 { 822 uint32_t tmp; 823 uint16_t val; 824 int n; 825 826 /* clock C once before the first command */ 827 RT2560_EEPROM_CTL(sc, 0); 828 829 RT2560_EEPROM_CTL(sc, RT2560_S); 830 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 831 RT2560_EEPROM_CTL(sc, RT2560_S); 832 833 /* write start bit (1) */ 834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 835 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 836 837 /* write READ opcode (10) */ 838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 840 RT2560_EEPROM_CTL(sc, RT2560_S); 841 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 842 843 /* write address (A5-A0 or A7-A0) */ 844 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 845 for (; n >= 0; n--) { 846 RT2560_EEPROM_CTL(sc, RT2560_S | 847 (((addr >> n) & 1) << RT2560_SHIFT_D)); 848 RT2560_EEPROM_CTL(sc, RT2560_S | 849 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 850 } 851 852 RT2560_EEPROM_CTL(sc, RT2560_S); 853 854 /* read data Q15-Q0 */ 855 val = 0; 856 for (n = 15; n >= 0; n--) { 857 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 858 tmp = RAL_READ(sc, RT2560_CSR21); 859 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 860 RT2560_EEPROM_CTL(sc, RT2560_S); 861 } 862 863 RT2560_EEPROM_CTL(sc, 0); 864 865 /* clear Chip Select and clock C */ 866 RT2560_EEPROM_CTL(sc, RT2560_S); 867 RT2560_EEPROM_CTL(sc, 0); 868 RT2560_EEPROM_CTL(sc, RT2560_C); 869 870 return val; 871 } 872 873 /* 874 * Some frames were processed by the hardware cipher engine and are ready for 875 * transmission. 876 */ 877 static void 878 rt2560_encryption_intr(struct rt2560_softc *sc) 879 { 880 struct rt2560_tx_desc *desc; 881 int hw; 882 883 /* retrieve last descriptor index processed by cipher engine */ 884 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 885 hw /= RT2560_TX_DESC_SIZE; 886 887 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 888 BUS_DMASYNC_POSTREAD); 889 890 while (sc->txq.next_encrypt != hw) { 891 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 892 printf("hw encrypt %d, cur_encrypt %d\n", hw, 893 sc->txq.cur_encrypt); 894 break; 895 } 896 897 desc = &sc->txq.desc[sc->txq.next_encrypt]; 898 899 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 900 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 901 break; 902 903 /* for TKIP, swap eiv field to fix a bug in ASIC */ 904 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 905 RT2560_TX_CIPHER_TKIP) 906 desc->eiv = bswap32(desc->eiv); 907 908 /* mark the frame ready for transmission */ 909 desc->flags |= htole32(RT2560_TX_VALID); 910 desc->flags |= htole32(RT2560_TX_BUSY); 911 912 DPRINTFN(sc, 15, "encryption done idx=%u\n", 913 sc->txq.next_encrypt); 914 915 sc->txq.next_encrypt = 916 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 917 } 918 919 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 920 BUS_DMASYNC_PREWRITE); 921 922 /* kick Tx */ 923 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 924 } 925 926 static void 927 rt2560_tx_intr(struct rt2560_softc *sc) 928 { 929 struct ifnet *ifp = sc->sc_ifp; 930 struct rt2560_tx_desc *desc; 931 struct rt2560_tx_data *data; 932 struct mbuf *m; 933 uint32_t flags; 934 int retrycnt; 935 struct ieee80211vap *vap; 936 struct ieee80211_node *ni; 937 938 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 939 BUS_DMASYNC_POSTREAD); 940 941 for (;;) { 942 desc = &sc->txq.desc[sc->txq.next]; 943 data = &sc->txq.data[sc->txq.next]; 944 945 flags = le32toh(desc->flags); 946 if ((flags & RT2560_TX_BUSY) || 947 (flags & RT2560_TX_CIPHER_BUSY) || 948 !(flags & RT2560_TX_VALID)) 949 break; 950 951 m = data->m; 952 ni = data->ni; 953 vap = ni->ni_vap; 954 955 switch (flags & RT2560_TX_RESULT_MASK) { 956 case RT2560_TX_SUCCESS: 957 retrycnt = 0; 958 959 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 960 if (data->rix != IEEE80211_FIXED_RATE_NONE) 961 ieee80211_ratectl_tx_complete(vap, ni, 962 IEEE80211_RATECTL_TX_SUCCESS, 963 &retrycnt, NULL); 964 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 965 break; 966 967 case RT2560_TX_SUCCESS_RETRY: 968 retrycnt = RT2560_TX_RETRYCNT(flags); 969 970 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 971 retrycnt); 972 if (data->rix != IEEE80211_FIXED_RATE_NONE) 973 ieee80211_ratectl_tx_complete(vap, ni, 974 IEEE80211_RATECTL_TX_SUCCESS, 975 &retrycnt, NULL); 976 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 977 break; 978 979 case RT2560_TX_FAIL_RETRY: 980 retrycnt = RT2560_TX_RETRYCNT(flags); 981 982 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 983 retrycnt); 984 if (data->rix != IEEE80211_FIXED_RATE_NONE) 985 ieee80211_ratectl_tx_complete(vap, ni, 986 IEEE80211_RATECTL_TX_FAILURE, 987 &retrycnt, NULL); 988 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 989 break; 990 991 case RT2560_TX_FAIL_INVALID: 992 case RT2560_TX_FAIL_OTHER: 993 default: 994 device_printf(sc->sc_dev, "sending data frame failed " 995 "0x%08x\n", flags); 996 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 997 } 998 999 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1000 BUS_DMASYNC_POSTWRITE); 1001 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1002 m_freem(m); 1003 data->m = NULL; 1004 ieee80211_free_node(data->ni); 1005 data->ni = NULL; 1006 1007 /* descriptor is no longer valid */ 1008 desc->flags &= ~htole32(RT2560_TX_VALID); 1009 1010 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1011 1012 sc->txq.queued--; 1013 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1014 } 1015 1016 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1017 BUS_DMASYNC_PREWRITE); 1018 1019 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1020 sc->sc_tx_timer = 0; 1021 1022 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1023 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1024 if ((sc->sc_flags & 1025 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1026 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1027 rt2560_start_locked(ifp); 1028 } 1029 } 1030 1031 static void 1032 rt2560_prio_intr(struct rt2560_softc *sc) 1033 { 1034 struct ifnet *ifp = sc->sc_ifp; 1035 struct rt2560_tx_desc *desc; 1036 struct rt2560_tx_data *data; 1037 struct ieee80211_node *ni; 1038 struct mbuf *m; 1039 int flags; 1040 1041 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1042 BUS_DMASYNC_POSTREAD); 1043 1044 for (;;) { 1045 desc = &sc->prioq.desc[sc->prioq.next]; 1046 data = &sc->prioq.data[sc->prioq.next]; 1047 1048 flags = le32toh(desc->flags); 1049 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1050 break; 1051 1052 switch (flags & RT2560_TX_RESULT_MASK) { 1053 case RT2560_TX_SUCCESS: 1054 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1055 break; 1056 1057 case RT2560_TX_SUCCESS_RETRY: 1058 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1059 (flags >> 5) & 0x7); 1060 break; 1061 1062 case RT2560_TX_FAIL_RETRY: 1063 DPRINTFN(sc, 9, "%s\n", 1064 "sending mgt frame failed (too much retries)"); 1065 break; 1066 1067 case RT2560_TX_FAIL_INVALID: 1068 case RT2560_TX_FAIL_OTHER: 1069 default: 1070 device_printf(sc->sc_dev, "sending mgt frame failed " 1071 "0x%08x\n", flags); 1072 break; 1073 } 1074 1075 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1076 BUS_DMASYNC_POSTWRITE); 1077 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1078 1079 m = data->m; 1080 data->m = NULL; 1081 ni = data->ni; 1082 data->ni = NULL; 1083 1084 /* descriptor is no longer valid */ 1085 desc->flags &= ~htole32(RT2560_TX_VALID); 1086 1087 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1088 1089 sc->prioq.queued--; 1090 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1091 1092 if (m->m_flags & M_TXCB) 1093 ieee80211_process_callback(ni, m, 1094 (flags & RT2560_TX_RESULT_MASK) &~ 1095 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1096 m_freem(m); 1097 ieee80211_free_node(ni); 1098 } 1099 1100 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1101 BUS_DMASYNC_PREWRITE); 1102 1103 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1104 sc->sc_tx_timer = 0; 1105 1106 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1107 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1108 if ((sc->sc_flags & 1109 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1110 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1111 rt2560_start_locked(ifp); 1112 } 1113 } 1114 1115 /* 1116 * Some frames were processed by the hardware cipher engine and are ready for 1117 * handoff to the IEEE802.11 layer. 1118 */ 1119 static void 1120 rt2560_decryption_intr(struct rt2560_softc *sc) 1121 { 1122 struct ifnet *ifp = sc->sc_ifp; 1123 struct ieee80211com *ic = ifp->if_l2com; 1124 struct rt2560_rx_desc *desc; 1125 struct rt2560_rx_data *data; 1126 bus_addr_t physaddr; 1127 struct ieee80211_frame *wh; 1128 struct ieee80211_node *ni; 1129 struct mbuf *mnew, *m; 1130 int hw, error; 1131 int8_t rssi, nf; 1132 1133 /* retrieve last decriptor index processed by cipher engine */ 1134 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1135 hw /= RT2560_RX_DESC_SIZE; 1136 1137 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1138 BUS_DMASYNC_POSTREAD); 1139 1140 for (; sc->rxq.cur_decrypt != hw;) { 1141 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1142 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1143 1144 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1145 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1146 break; 1147 1148 if (data->drop) { 1149 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1150 goto skip; 1151 } 1152 1153 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1154 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1155 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1156 goto skip; 1157 } 1158 1159 /* 1160 * Try to allocate a new mbuf for this ring element and load it 1161 * before processing the current mbuf. If the ring element 1162 * cannot be loaded, drop the received packet and reuse the old 1163 * mbuf. In the unlikely case that the old mbuf can't be 1164 * reloaded either, explicitly panic. 1165 */ 1166 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1167 if (mnew == NULL) { 1168 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1169 goto skip; 1170 } 1171 1172 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1173 BUS_DMASYNC_POSTREAD); 1174 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1175 1176 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1177 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1178 &physaddr, 0); 1179 if (error != 0) { 1180 m_freem(mnew); 1181 1182 /* try to reload the old mbuf */ 1183 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1184 mtod(data->m, void *), MCLBYTES, 1185 rt2560_dma_map_addr, &physaddr, 0); 1186 if (error != 0) { 1187 /* very unlikely that it will fail... */ 1188 panic("%s: could not load old rx mbuf", 1189 device_get_name(sc->sc_dev)); 1190 } 1191 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1192 goto skip; 1193 } 1194 1195 /* 1196 * New mbuf successfully loaded, update Rx ring and continue 1197 * processing. 1198 */ 1199 m = data->m; 1200 data->m = mnew; 1201 desc->physaddr = htole32(physaddr); 1202 1203 /* finalize mbuf */ 1204 m->m_pkthdr.rcvif = ifp; 1205 m->m_pkthdr.len = m->m_len = 1206 (le32toh(desc->flags) >> 16) & 0xfff; 1207 1208 rssi = RT2560_RSSI(sc, desc->rssi); 1209 nf = RT2560_NOISE_FLOOR; 1210 if (ieee80211_radiotap_active(ic)) { 1211 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1212 uint32_t tsf_lo, tsf_hi; 1213 1214 /* get timestamp (low and high 32 bits) */ 1215 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1216 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1217 1218 tap->wr_tsf = 1219 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1220 tap->wr_flags = 0; 1221 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1222 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1223 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1224 tap->wr_antenna = sc->rx_ant; 1225 tap->wr_antsignal = nf + rssi; 1226 tap->wr_antnoise = nf; 1227 } 1228 1229 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1230 RAL_UNLOCK(sc); 1231 wh = mtod(m, struct ieee80211_frame *); 1232 ni = ieee80211_find_rxnode(ic, 1233 (struct ieee80211_frame_min *)wh); 1234 if (ni != NULL) { 1235 (void) ieee80211_input(ni, m, rssi, nf); 1236 ieee80211_free_node(ni); 1237 } else 1238 (void) ieee80211_input_all(ic, m, rssi, nf); 1239 1240 RAL_LOCK(sc); 1241 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1242 skip: desc->flags = htole32(RT2560_RX_BUSY); 1243 1244 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1245 1246 sc->rxq.cur_decrypt = 1247 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1248 } 1249 1250 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1251 BUS_DMASYNC_PREWRITE); 1252 } 1253 1254 /* 1255 * Some frames were received. Pass them to the hardware cipher engine before 1256 * sending them to the 802.11 layer. 1257 */ 1258 static void 1259 rt2560_rx_intr(struct rt2560_softc *sc) 1260 { 1261 struct rt2560_rx_desc *desc; 1262 struct rt2560_rx_data *data; 1263 1264 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1265 BUS_DMASYNC_POSTREAD); 1266 1267 for (;;) { 1268 desc = &sc->rxq.desc[sc->rxq.cur]; 1269 data = &sc->rxq.data[sc->rxq.cur]; 1270 1271 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1272 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1273 break; 1274 1275 data->drop = 0; 1276 1277 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1278 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1279 /* 1280 * This should not happen since we did not request 1281 * to receive those frames when we filled RXCSR0. 1282 */ 1283 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1284 le32toh(desc->flags)); 1285 data->drop = 1; 1286 } 1287 1288 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1289 DPRINTFN(sc, 5, "%s\n", "bad length"); 1290 data->drop = 1; 1291 } 1292 1293 /* mark the frame for decryption */ 1294 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1295 1296 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1297 1298 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1299 } 1300 1301 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1302 BUS_DMASYNC_PREWRITE); 1303 1304 /* kick decrypt */ 1305 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1306 } 1307 1308 static void 1309 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1310 { 1311 struct rt2560_vap *rvp = RT2560_VAP(vap); 1312 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1313 1314 setbit(bo->bo_flags, item); 1315 } 1316 1317 /* 1318 * This function is called periodically in IBSS mode when a new beacon must be 1319 * sent out. 1320 */ 1321 static void 1322 rt2560_beacon_expire(struct rt2560_softc *sc) 1323 { 1324 struct ifnet *ifp = sc->sc_ifp; 1325 struct ieee80211com *ic = ifp->if_l2com; 1326 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1327 struct rt2560_vap *rvp = RT2560_VAP(vap); 1328 struct rt2560_tx_data *data; 1329 1330 if (ic->ic_opmode != IEEE80211_M_IBSS && 1331 ic->ic_opmode != IEEE80211_M_HOSTAP && 1332 ic->ic_opmode != IEEE80211_M_MBSS) 1333 return; 1334 1335 data = &sc->bcnq.data[sc->bcnq.next]; 1336 /* 1337 * Don't send beacon if bsschan isn't set 1338 */ 1339 if (data->ni == NULL) 1340 return; 1341 1342 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1343 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1344 1345 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1346 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1347 1348 rt2560_tx_bcn(sc, data->m, data->ni); 1349 1350 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1351 1352 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1353 } 1354 1355 /* ARGSUSED */ 1356 static void 1357 rt2560_wakeup_expire(struct rt2560_softc *sc) 1358 { 1359 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1360 } 1361 1362 void 1363 rt2560_intr(void *arg) 1364 { 1365 struct rt2560_softc *sc = arg; 1366 struct ifnet *ifp = sc->sc_ifp; 1367 uint32_t r; 1368 1369 RAL_LOCK(sc); 1370 1371 /* disable interrupts */ 1372 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1373 1374 /* don't re-enable interrupts if we're shutting down */ 1375 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1376 RAL_UNLOCK(sc); 1377 return; 1378 } 1379 1380 r = RAL_READ(sc, RT2560_CSR7); 1381 RAL_WRITE(sc, RT2560_CSR7, r); 1382 1383 if (r & RT2560_BEACON_EXPIRE) 1384 rt2560_beacon_expire(sc); 1385 1386 if (r & RT2560_WAKEUP_EXPIRE) 1387 rt2560_wakeup_expire(sc); 1388 1389 if (r & RT2560_ENCRYPTION_DONE) 1390 rt2560_encryption_intr(sc); 1391 1392 if (r & RT2560_TX_DONE) 1393 rt2560_tx_intr(sc); 1394 1395 if (r & RT2560_PRIO_DONE) 1396 rt2560_prio_intr(sc); 1397 1398 if (r & RT2560_DECRYPTION_DONE) 1399 rt2560_decryption_intr(sc); 1400 1401 if (r & RT2560_RX_DONE) { 1402 rt2560_rx_intr(sc); 1403 rt2560_encryption_intr(sc); 1404 } 1405 1406 /* re-enable interrupts */ 1407 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1408 1409 RAL_UNLOCK(sc); 1410 } 1411 1412 #define RAL_SIFS 10 /* us */ 1413 1414 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1415 1416 static uint8_t 1417 rt2560_plcp_signal(int rate) 1418 { 1419 switch (rate) { 1420 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1421 case 12: return 0xb; 1422 case 18: return 0xf; 1423 case 24: return 0xa; 1424 case 36: return 0xe; 1425 case 48: return 0x9; 1426 case 72: return 0xd; 1427 case 96: return 0x8; 1428 case 108: return 0xc; 1429 1430 /* CCK rates (NB: not IEEE std, device-specific) */ 1431 case 2: return 0x0; 1432 case 4: return 0x1; 1433 case 11: return 0x2; 1434 case 22: return 0x3; 1435 } 1436 return 0xff; /* XXX unsupported/unknown rate */ 1437 } 1438 1439 static void 1440 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1441 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1442 { 1443 struct ifnet *ifp = sc->sc_ifp; 1444 struct ieee80211com *ic = ifp->if_l2com; 1445 uint16_t plcp_length; 1446 int remainder; 1447 1448 desc->flags = htole32(flags); 1449 desc->flags |= htole32(len << 16); 1450 1451 desc->physaddr = htole32(physaddr); 1452 desc->wme = htole16( 1453 RT2560_AIFSN(2) | 1454 RT2560_LOGCWMIN(3) | 1455 RT2560_LOGCWMAX(8)); 1456 1457 /* setup PLCP fields */ 1458 desc->plcp_signal = rt2560_plcp_signal(rate); 1459 desc->plcp_service = 4; 1460 1461 len += IEEE80211_CRC_LEN; 1462 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1463 desc->flags |= htole32(RT2560_TX_OFDM); 1464 1465 plcp_length = len & 0xfff; 1466 desc->plcp_length_hi = plcp_length >> 6; 1467 desc->plcp_length_lo = plcp_length & 0x3f; 1468 } else { 1469 plcp_length = (16 * len + rate - 1) / rate; 1470 if (rate == 22) { 1471 remainder = (16 * len) % 22; 1472 if (remainder != 0 && remainder < 7) 1473 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1474 } 1475 desc->plcp_length_hi = plcp_length >> 8; 1476 desc->plcp_length_lo = plcp_length & 0xff; 1477 1478 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1479 desc->plcp_signal |= 0x08; 1480 } 1481 1482 if (!encrypt) 1483 desc->flags |= htole32(RT2560_TX_VALID); 1484 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1485 : htole32(RT2560_TX_BUSY); 1486 } 1487 1488 static int 1489 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1490 struct ieee80211_node *ni) 1491 { 1492 struct ieee80211vap *vap = ni->ni_vap; 1493 struct rt2560_tx_desc *desc; 1494 struct rt2560_tx_data *data; 1495 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1496 int nsegs, rate, error; 1497 1498 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1499 data = &sc->bcnq.data[sc->bcnq.cur]; 1500 1501 /* XXX maybe a separate beacon rate? */ 1502 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1503 1504 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1505 segs, &nsegs, BUS_DMA_NOWAIT); 1506 if (error != 0) { 1507 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1508 error); 1509 m_freem(m0); 1510 return error; 1511 } 1512 1513 if (ieee80211_radiotap_active_vap(vap)) { 1514 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1515 1516 tap->wt_flags = 0; 1517 tap->wt_rate = rate; 1518 tap->wt_antenna = sc->tx_ant; 1519 1520 ieee80211_radiotap_tx(vap, m0); 1521 } 1522 1523 data->m = m0; 1524 data->ni = ni; 1525 1526 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1527 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1528 1529 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1530 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1531 1532 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1533 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1534 BUS_DMASYNC_PREWRITE); 1535 1536 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1537 1538 return 0; 1539 } 1540 1541 static int 1542 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1543 struct ieee80211_node *ni) 1544 { 1545 struct ieee80211vap *vap = ni->ni_vap; 1546 struct ieee80211com *ic = ni->ni_ic; 1547 struct rt2560_tx_desc *desc; 1548 struct rt2560_tx_data *data; 1549 struct ieee80211_frame *wh; 1550 struct ieee80211_key *k; 1551 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1552 uint16_t dur; 1553 uint32_t flags = 0; 1554 int nsegs, rate, error; 1555 1556 desc = &sc->prioq.desc[sc->prioq.cur]; 1557 data = &sc->prioq.data[sc->prioq.cur]; 1558 1559 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1560 1561 wh = mtod(m0, struct ieee80211_frame *); 1562 1563 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1564 k = ieee80211_crypto_encap(ni, m0); 1565 if (k == NULL) { 1566 m_freem(m0); 1567 return ENOBUFS; 1568 } 1569 } 1570 1571 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1572 segs, &nsegs, 0); 1573 if (error != 0) { 1574 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1575 error); 1576 m_freem(m0); 1577 return error; 1578 } 1579 1580 if (ieee80211_radiotap_active_vap(vap)) { 1581 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1582 1583 tap->wt_flags = 0; 1584 tap->wt_rate = rate; 1585 tap->wt_antenna = sc->tx_ant; 1586 1587 ieee80211_radiotap_tx(vap, m0); 1588 } 1589 1590 data->m = m0; 1591 data->ni = ni; 1592 /* management frames are not taken into account for amrr */ 1593 data->rix = IEEE80211_FIXED_RATE_NONE; 1594 1595 wh = mtod(m0, struct ieee80211_frame *); 1596 1597 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1598 flags |= RT2560_TX_ACK; 1599 1600 dur = ieee80211_ack_duration(ic->ic_rt, 1601 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1602 *(uint16_t *)wh->i_dur = htole16(dur); 1603 1604 /* tell hardware to add timestamp for probe responses */ 1605 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1606 IEEE80211_FC0_TYPE_MGT && 1607 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1608 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1609 flags |= RT2560_TX_TIMESTAMP; 1610 } 1611 1612 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1613 segs->ds_addr); 1614 1615 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1616 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1617 BUS_DMASYNC_PREWRITE); 1618 1619 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1620 m0->m_pkthdr.len, sc->prioq.cur, rate); 1621 1622 /* kick prio */ 1623 sc->prioq.queued++; 1624 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1625 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1626 1627 return 0; 1628 } 1629 1630 static int 1631 rt2560_sendprot(struct rt2560_softc *sc, 1632 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1633 { 1634 struct ieee80211com *ic = ni->ni_ic; 1635 const struct ieee80211_frame *wh; 1636 struct rt2560_tx_desc *desc; 1637 struct rt2560_tx_data *data; 1638 struct mbuf *mprot; 1639 int protrate, ackrate, pktlen, flags, isshort, error; 1640 uint16_t dur; 1641 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1642 int nsegs; 1643 1644 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1645 ("protection %d", prot)); 1646 1647 wh = mtod(m, const struct ieee80211_frame *); 1648 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1649 1650 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1651 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1652 1653 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1654 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1655 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1656 flags = RT2560_TX_MORE_FRAG; 1657 if (prot == IEEE80211_PROT_RTSCTS) { 1658 /* NB: CTS is the same size as an ACK */ 1659 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1660 flags |= RT2560_TX_ACK; 1661 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1662 } else { 1663 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1664 } 1665 if (mprot == NULL) { 1666 /* XXX stat + msg */ 1667 return ENOBUFS; 1668 } 1669 1670 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1671 data = &sc->txq.data[sc->txq.cur_encrypt]; 1672 1673 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1674 mprot, segs, &nsegs, 0); 1675 if (error != 0) { 1676 device_printf(sc->sc_dev, 1677 "could not map mbuf (error %d)\n", error); 1678 m_freem(mprot); 1679 return error; 1680 } 1681 1682 data->m = mprot; 1683 data->ni = ieee80211_ref_node(ni); 1684 /* ctl frames are not taken into account for amrr */ 1685 data->rix = IEEE80211_FIXED_RATE_NONE; 1686 1687 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1688 segs->ds_addr); 1689 1690 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1691 BUS_DMASYNC_PREWRITE); 1692 1693 sc->txq.queued++; 1694 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1695 1696 return 0; 1697 } 1698 1699 static int 1700 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1701 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1702 { 1703 struct ieee80211vap *vap = ni->ni_vap; 1704 struct ieee80211com *ic = ni->ni_ic; 1705 struct rt2560_tx_desc *desc; 1706 struct rt2560_tx_data *data; 1707 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1708 uint32_t flags; 1709 int nsegs, rate, error; 1710 1711 desc = &sc->prioq.desc[sc->prioq.cur]; 1712 data = &sc->prioq.data[sc->prioq.cur]; 1713 1714 rate = params->ibp_rate0; 1715 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1716 /* XXX fall back to mcast/mgmt rate? */ 1717 m_freem(m0); 1718 return EINVAL; 1719 } 1720 1721 flags = 0; 1722 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1723 flags |= RT2560_TX_ACK; 1724 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1725 error = rt2560_sendprot(sc, m0, ni, 1726 params->ibp_flags & IEEE80211_BPF_RTS ? 1727 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1728 rate); 1729 if (error) { 1730 m_freem(m0); 1731 return error; 1732 } 1733 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1734 } 1735 1736 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1737 segs, &nsegs, 0); 1738 if (error != 0) { 1739 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1740 error); 1741 m_freem(m0); 1742 return error; 1743 } 1744 1745 if (ieee80211_radiotap_active_vap(vap)) { 1746 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1747 1748 tap->wt_flags = 0; 1749 tap->wt_rate = rate; 1750 tap->wt_antenna = sc->tx_ant; 1751 1752 ieee80211_radiotap_tx(ni->ni_vap, m0); 1753 } 1754 1755 data->m = m0; 1756 data->ni = ni; 1757 1758 /* XXX need to setup descriptor ourself */ 1759 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1760 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1761 segs->ds_addr); 1762 1763 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1764 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1765 BUS_DMASYNC_PREWRITE); 1766 1767 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1768 m0->m_pkthdr.len, sc->prioq.cur, rate); 1769 1770 /* kick prio */ 1771 sc->prioq.queued++; 1772 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1773 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1774 1775 return 0; 1776 } 1777 1778 static int 1779 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1780 struct ieee80211_node *ni) 1781 { 1782 struct ieee80211vap *vap = ni->ni_vap; 1783 struct ieee80211com *ic = ni->ni_ic; 1784 struct rt2560_tx_desc *desc; 1785 struct rt2560_tx_data *data; 1786 struct ieee80211_frame *wh; 1787 const struct ieee80211_txparam *tp; 1788 struct ieee80211_key *k; 1789 struct mbuf *mnew; 1790 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1791 uint16_t dur; 1792 uint32_t flags; 1793 int nsegs, rate, error; 1794 1795 wh = mtod(m0, struct ieee80211_frame *); 1796 1797 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1798 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1799 rate = tp->mcastrate; 1800 } else if (m0->m_flags & M_EAPOL) { 1801 rate = tp->mgmtrate; 1802 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1803 rate = tp->ucastrate; 1804 } else { 1805 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1806 rate = ni->ni_txrate; 1807 } 1808 1809 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1810 k = ieee80211_crypto_encap(ni, m0); 1811 if (k == NULL) { 1812 m_freem(m0); 1813 return ENOBUFS; 1814 } 1815 1816 /* packet header may have moved, reset our local pointer */ 1817 wh = mtod(m0, struct ieee80211_frame *); 1818 } 1819 1820 flags = 0; 1821 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1822 int prot = IEEE80211_PROT_NONE; 1823 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1824 prot = IEEE80211_PROT_RTSCTS; 1825 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1826 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1827 prot = ic->ic_protmode; 1828 if (prot != IEEE80211_PROT_NONE) { 1829 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1830 if (error) { 1831 m_freem(m0); 1832 return error; 1833 } 1834 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1835 } 1836 } 1837 1838 data = &sc->txq.data[sc->txq.cur_encrypt]; 1839 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1840 1841 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1842 segs, &nsegs, 0); 1843 if (error != 0 && error != EFBIG) { 1844 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1845 error); 1846 m_freem(m0); 1847 return error; 1848 } 1849 if (error != 0) { 1850 mnew = m_defrag(m0, M_NOWAIT); 1851 if (mnew == NULL) { 1852 device_printf(sc->sc_dev, 1853 "could not defragment mbuf\n"); 1854 m_freem(m0); 1855 return ENOBUFS; 1856 } 1857 m0 = mnew; 1858 1859 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1860 m0, segs, &nsegs, 0); 1861 if (error != 0) { 1862 device_printf(sc->sc_dev, 1863 "could not map mbuf (error %d)\n", error); 1864 m_freem(m0); 1865 return error; 1866 } 1867 1868 /* packet header may have moved, reset our local pointer */ 1869 wh = mtod(m0, struct ieee80211_frame *); 1870 } 1871 1872 if (ieee80211_radiotap_active_vap(vap)) { 1873 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1874 1875 tap->wt_flags = 0; 1876 tap->wt_rate = rate; 1877 tap->wt_antenna = sc->tx_ant; 1878 1879 ieee80211_radiotap_tx(vap, m0); 1880 } 1881 1882 data->m = m0; 1883 data->ni = ni; 1884 1885 /* remember link conditions for rate adaptation algorithm */ 1886 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1887 data->rix = ni->ni_txrate; 1888 /* XXX probably need last rssi value and not avg */ 1889 data->rssi = ic->ic_node_getrssi(ni); 1890 } else 1891 data->rix = IEEE80211_FIXED_RATE_NONE; 1892 1893 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1894 flags |= RT2560_TX_ACK; 1895 1896 dur = ieee80211_ack_duration(ic->ic_rt, 1897 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1898 *(uint16_t *)wh->i_dur = htole16(dur); 1899 } 1900 1901 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1902 segs->ds_addr); 1903 1904 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1905 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1906 BUS_DMASYNC_PREWRITE); 1907 1908 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1909 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1910 1911 /* kick encrypt */ 1912 sc->txq.queued++; 1913 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1914 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1915 1916 return 0; 1917 } 1918 1919 static void 1920 rt2560_start_locked(struct ifnet *ifp) 1921 { 1922 struct rt2560_softc *sc = ifp->if_softc; 1923 struct mbuf *m; 1924 struct ieee80211_node *ni; 1925 1926 RAL_LOCK_ASSERT(sc); 1927 1928 for (;;) { 1929 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1930 if (m == NULL) 1931 break; 1932 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1933 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1934 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1935 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1936 break; 1937 } 1938 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1939 if (rt2560_tx_data(sc, m, ni) != 0) { 1940 ieee80211_free_node(ni); 1941 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1942 break; 1943 } 1944 1945 sc->sc_tx_timer = 5; 1946 } 1947 } 1948 1949 static void 1950 rt2560_start(struct ifnet *ifp) 1951 { 1952 struct rt2560_softc *sc = ifp->if_softc; 1953 1954 RAL_LOCK(sc); 1955 rt2560_start_locked(ifp); 1956 RAL_UNLOCK(sc); 1957 } 1958 1959 static void 1960 rt2560_watchdog(void *arg) 1961 { 1962 struct rt2560_softc *sc = arg; 1963 struct ifnet *ifp = sc->sc_ifp; 1964 1965 RAL_LOCK_ASSERT(sc); 1966 1967 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1968 1969 if (sc->sc_invalid) /* card ejected */ 1970 return; 1971 1972 rt2560_encryption_intr(sc); 1973 rt2560_tx_intr(sc); 1974 1975 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1976 if_printf(ifp, "device timeout\n"); 1977 rt2560_init_locked(sc); 1978 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1979 /* NB: callout is reset in rt2560_init() */ 1980 return; 1981 } 1982 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1983 } 1984 1985 static int 1986 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1987 { 1988 struct rt2560_softc *sc = ifp->if_softc; 1989 struct ieee80211com *ic = ifp->if_l2com; 1990 struct ifreq *ifr = (struct ifreq *) data; 1991 int error = 0, startall = 0; 1992 1993 switch (cmd) { 1994 case SIOCSIFFLAGS: 1995 RAL_LOCK(sc); 1996 if (ifp->if_flags & IFF_UP) { 1997 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1998 rt2560_init_locked(sc); 1999 startall = 1; 2000 } else 2001 rt2560_update_promisc(ic); 2002 } else { 2003 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2004 rt2560_stop_locked(sc); 2005 } 2006 RAL_UNLOCK(sc); 2007 if (startall) 2008 ieee80211_start_all(ic); 2009 break; 2010 case SIOCGIFMEDIA: 2011 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2012 break; 2013 case SIOCGIFADDR: 2014 error = ether_ioctl(ifp, cmd, data); 2015 break; 2016 default: 2017 error = EINVAL; 2018 break; 2019 } 2020 return error; 2021 } 2022 2023 static void 2024 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2025 { 2026 uint32_t tmp; 2027 int ntries; 2028 2029 for (ntries = 0; ntries < 100; ntries++) { 2030 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2031 break; 2032 DELAY(1); 2033 } 2034 if (ntries == 100) { 2035 device_printf(sc->sc_dev, "could not write to BBP\n"); 2036 return; 2037 } 2038 2039 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2040 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2041 2042 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2043 } 2044 2045 static uint8_t 2046 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2047 { 2048 uint32_t val; 2049 int ntries; 2050 2051 for (ntries = 0; ntries < 100; ntries++) { 2052 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2053 break; 2054 DELAY(1); 2055 } 2056 if (ntries == 100) { 2057 device_printf(sc->sc_dev, "could not read from BBP\n"); 2058 return 0; 2059 } 2060 2061 val = RT2560_BBP_BUSY | reg << 8; 2062 RAL_WRITE(sc, RT2560_BBPCSR, val); 2063 2064 for (ntries = 0; ntries < 100; ntries++) { 2065 val = RAL_READ(sc, RT2560_BBPCSR); 2066 if (!(val & RT2560_BBP_BUSY)) 2067 return val & 0xff; 2068 DELAY(1); 2069 } 2070 2071 device_printf(sc->sc_dev, "could not read from BBP\n"); 2072 return 0; 2073 } 2074 2075 static void 2076 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2077 { 2078 uint32_t tmp; 2079 int ntries; 2080 2081 for (ntries = 0; ntries < 100; ntries++) { 2082 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2083 break; 2084 DELAY(1); 2085 } 2086 if (ntries == 100) { 2087 device_printf(sc->sc_dev, "could not write to RF\n"); 2088 return; 2089 } 2090 2091 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2092 (reg & 0x3); 2093 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2094 2095 /* remember last written value in sc */ 2096 sc->rf_regs[reg] = val; 2097 2098 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2099 } 2100 2101 static void 2102 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2103 { 2104 struct ifnet *ifp = sc->sc_ifp; 2105 struct ieee80211com *ic = ifp->if_l2com; 2106 uint8_t power, tmp; 2107 u_int i, chan; 2108 2109 chan = ieee80211_chan2ieee(ic, c); 2110 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2111 2112 if (IEEE80211_IS_CHAN_2GHZ(c)) 2113 power = min(sc->txpow[chan - 1], 31); 2114 else 2115 power = 31; 2116 2117 /* adjust txpower using ifconfig settings */ 2118 power -= (100 - ic->ic_txpowlimit) / 8; 2119 2120 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2121 2122 switch (sc->rf_rev) { 2123 case RT2560_RF_2522: 2124 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2125 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2126 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2127 break; 2128 2129 case RT2560_RF_2523: 2130 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2131 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2132 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2133 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2134 break; 2135 2136 case RT2560_RF_2524: 2137 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2138 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2139 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2140 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2141 break; 2142 2143 case RT2560_RF_2525: 2144 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2145 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2146 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2147 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2148 2149 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2150 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2151 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2152 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2153 break; 2154 2155 case RT2560_RF_2525E: 2156 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2157 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2158 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2159 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2160 break; 2161 2162 case RT2560_RF_2526: 2163 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2164 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2165 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2166 2167 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2168 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2169 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2170 break; 2171 2172 /* dual-band RF */ 2173 case RT2560_RF_5222: 2174 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2175 2176 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2177 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2178 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2179 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2180 break; 2181 default: 2182 printf("unknown ral rev=%d\n", sc->rf_rev); 2183 } 2184 2185 /* XXX */ 2186 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2187 /* set Japan filter bit for channel 14 */ 2188 tmp = rt2560_bbp_read(sc, 70); 2189 2190 tmp &= ~RT2560_JAPAN_FILTER; 2191 if (chan == 14) 2192 tmp |= RT2560_JAPAN_FILTER; 2193 2194 rt2560_bbp_write(sc, 70, tmp); 2195 2196 /* clear CRC errors */ 2197 RAL_READ(sc, RT2560_CNT0); 2198 } 2199 } 2200 2201 static void 2202 rt2560_set_channel(struct ieee80211com *ic) 2203 { 2204 struct ifnet *ifp = ic->ic_ifp; 2205 struct rt2560_softc *sc = ifp->if_softc; 2206 2207 RAL_LOCK(sc); 2208 rt2560_set_chan(sc, ic->ic_curchan); 2209 RAL_UNLOCK(sc); 2210 2211 } 2212 2213 #if 0 2214 /* 2215 * Disable RF auto-tuning. 2216 */ 2217 static void 2218 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2219 { 2220 uint32_t tmp; 2221 2222 if (sc->rf_rev != RT2560_RF_2523) { 2223 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2224 rt2560_rf_write(sc, RAL_RF1, tmp); 2225 } 2226 2227 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2228 rt2560_rf_write(sc, RAL_RF3, tmp); 2229 2230 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2231 } 2232 #endif 2233 2234 /* 2235 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2236 * synchronization. 2237 */ 2238 static void 2239 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2240 { 2241 struct ifnet *ifp = sc->sc_ifp; 2242 struct ieee80211com *ic = ifp->if_l2com; 2243 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2244 uint16_t logcwmin, preload; 2245 uint32_t tmp; 2246 2247 /* first, disable TSF synchronization */ 2248 RAL_WRITE(sc, RT2560_CSR14, 0); 2249 2250 tmp = 16 * vap->iv_bss->ni_intval; 2251 RAL_WRITE(sc, RT2560_CSR12, tmp); 2252 2253 RAL_WRITE(sc, RT2560_CSR13, 0); 2254 2255 logcwmin = 5; 2256 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2257 tmp = logcwmin << 16 | preload; 2258 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2259 2260 /* finally, enable TSF synchronization */ 2261 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2262 if (ic->ic_opmode == IEEE80211_M_STA) 2263 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2264 else 2265 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2266 RT2560_ENABLE_BEACON_GENERATOR; 2267 RAL_WRITE(sc, RT2560_CSR14, tmp); 2268 2269 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2270 } 2271 2272 static void 2273 rt2560_enable_tsf(struct rt2560_softc *sc) 2274 { 2275 RAL_WRITE(sc, RT2560_CSR14, 0); 2276 RAL_WRITE(sc, RT2560_CSR14, 2277 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2278 } 2279 2280 static void 2281 rt2560_update_plcp(struct rt2560_softc *sc) 2282 { 2283 struct ifnet *ifp = sc->sc_ifp; 2284 struct ieee80211com *ic = ifp->if_l2com; 2285 2286 /* no short preamble for 1Mbps */ 2287 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2288 2289 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2290 /* values taken from the reference driver */ 2291 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2292 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2293 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2294 } else { 2295 /* same values as above or'ed 0x8 */ 2296 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2297 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2298 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2299 } 2300 2301 DPRINTF(sc, "updating PLCP for %s preamble\n", 2302 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2303 } 2304 2305 /* 2306 * This function can be called by ieee80211_set_shortslottime(). Refer to 2307 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2308 */ 2309 static void 2310 rt2560_update_slot(struct ieee80211com *ic) 2311 { 2312 struct rt2560_softc *sc = ic->ic_softc; 2313 uint8_t slottime; 2314 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2315 uint32_t tmp; 2316 2317 #ifndef FORCE_SLOTTIME 2318 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2319 #else 2320 /* 2321 * Setting slot time according to "short slot time" capability 2322 * in beacon/probe_resp seems to cause problem to acknowledge 2323 * certain AP's data frames transimitted at CCK/DS rates: the 2324 * problematic AP keeps retransmitting data frames, probably 2325 * because MAC level acks are not received by hardware. 2326 * So we cheat a little bit here by claiming we are capable of 2327 * "short slot time" but setting hardware slot time to the normal 2328 * slot time. ral(4) does not seem to have trouble to receive 2329 * frames transmitted using short slot time even if hardware 2330 * slot time is set to normal slot time. If we didn't use this 2331 * trick, we would have to claim that short slot time is not 2332 * supported; this would give relative poor RX performance 2333 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2334 * slot time. 2335 */ 2336 slottime = 20; 2337 #endif 2338 2339 /* update the MAC slot boundaries */ 2340 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2341 tx_pifs = tx_sifs + slottime; 2342 tx_difs = tx_sifs + 2 * slottime; 2343 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2344 2345 tmp = RAL_READ(sc, RT2560_CSR11); 2346 tmp = (tmp & ~0x1f00) | slottime << 8; 2347 RAL_WRITE(sc, RT2560_CSR11, tmp); 2348 2349 tmp = tx_pifs << 16 | tx_sifs; 2350 RAL_WRITE(sc, RT2560_CSR18, tmp); 2351 2352 tmp = eifs << 16 | tx_difs; 2353 RAL_WRITE(sc, RT2560_CSR19, tmp); 2354 2355 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2356 } 2357 2358 static void 2359 rt2560_set_basicrates(struct rt2560_softc *sc, 2360 const struct ieee80211_rateset *rs) 2361 { 2362 #define RV(r) ((r) & IEEE80211_RATE_VAL) 2363 struct ifnet *ifp = sc->sc_ifp; 2364 struct ieee80211com *ic = ifp->if_l2com; 2365 uint32_t mask = 0; 2366 uint8_t rate; 2367 int i; 2368 2369 for (i = 0; i < rs->rs_nrates; i++) { 2370 rate = rs->rs_rates[i]; 2371 2372 if (!(rate & IEEE80211_RATE_BASIC)) 2373 continue; 2374 2375 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, RV(rate)); 2376 } 2377 2378 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2379 2380 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2381 #undef RV 2382 } 2383 2384 static void 2385 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2386 { 2387 uint32_t tmp; 2388 2389 /* set ON period to 70ms and OFF period to 30ms */ 2390 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2391 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2392 } 2393 2394 static void 2395 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2396 { 2397 uint32_t tmp; 2398 2399 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2400 RAL_WRITE(sc, RT2560_CSR5, tmp); 2401 2402 tmp = bssid[4] | bssid[5] << 8; 2403 RAL_WRITE(sc, RT2560_CSR6, tmp); 2404 2405 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2406 } 2407 2408 static void 2409 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2410 { 2411 uint32_t tmp; 2412 2413 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2414 RAL_WRITE(sc, RT2560_CSR3, tmp); 2415 2416 tmp = addr[4] | addr[5] << 8; 2417 RAL_WRITE(sc, RT2560_CSR4, tmp); 2418 2419 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2420 } 2421 2422 static void 2423 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2424 { 2425 uint32_t tmp; 2426 2427 tmp = RAL_READ(sc, RT2560_CSR3); 2428 addr[0] = tmp & 0xff; 2429 addr[1] = (tmp >> 8) & 0xff; 2430 addr[2] = (tmp >> 16) & 0xff; 2431 addr[3] = (tmp >> 24); 2432 2433 tmp = RAL_READ(sc, RT2560_CSR4); 2434 addr[4] = tmp & 0xff; 2435 addr[5] = (tmp >> 8) & 0xff; 2436 } 2437 2438 static void 2439 rt2560_update_promisc(struct ieee80211com *ic) 2440 { 2441 struct rt2560_softc *sc = ic->ic_softc; 2442 uint32_t tmp; 2443 2444 tmp = RAL_READ(sc, RT2560_RXCSR0); 2445 2446 tmp &= ~RT2560_DROP_NOT_TO_ME; 2447 if (!(ic->ic_ifp->if_flags & IFF_PROMISC)) 2448 tmp |= RT2560_DROP_NOT_TO_ME; 2449 2450 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2451 2452 DPRINTF(sc, "%s promiscuous mode\n", 2453 (ic->ic_ifp->if_flags & IFF_PROMISC) ? "entering" : "leaving"); 2454 } 2455 2456 static const char * 2457 rt2560_get_rf(int rev) 2458 { 2459 switch (rev) { 2460 case RT2560_RF_2522: return "RT2522"; 2461 case RT2560_RF_2523: return "RT2523"; 2462 case RT2560_RF_2524: return "RT2524"; 2463 case RT2560_RF_2525: return "RT2525"; 2464 case RT2560_RF_2525E: return "RT2525e"; 2465 case RT2560_RF_2526: return "RT2526"; 2466 case RT2560_RF_5222: return "RT5222"; 2467 default: return "unknown"; 2468 } 2469 } 2470 2471 static void 2472 rt2560_read_config(struct rt2560_softc *sc) 2473 { 2474 uint16_t val; 2475 int i; 2476 2477 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2478 sc->rf_rev = (val >> 11) & 0x7; 2479 sc->hw_radio = (val >> 10) & 0x1; 2480 sc->led_mode = (val >> 6) & 0x7; 2481 sc->rx_ant = (val >> 4) & 0x3; 2482 sc->tx_ant = (val >> 2) & 0x3; 2483 sc->nb_ant = val & 0x3; 2484 2485 /* read default values for BBP registers */ 2486 for (i = 0; i < 16; i++) { 2487 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2488 if (val == 0 || val == 0xffff) 2489 continue; 2490 2491 sc->bbp_prom[i].reg = val >> 8; 2492 sc->bbp_prom[i].val = val & 0xff; 2493 } 2494 2495 /* read Tx power for all b/g channels */ 2496 for (i = 0; i < 14 / 2; i++) { 2497 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2498 sc->txpow[i * 2] = val & 0xff; 2499 sc->txpow[i * 2 + 1] = val >> 8; 2500 } 2501 for (i = 0; i < 14; ++i) { 2502 if (sc->txpow[i] > 31) 2503 sc->txpow[i] = 24; 2504 } 2505 2506 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2507 if ((val & 0xff) == 0xff) 2508 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2509 else 2510 sc->rssi_corr = val & 0xff; 2511 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2512 sc->rssi_corr, val); 2513 } 2514 2515 2516 static void 2517 rt2560_scan_start(struct ieee80211com *ic) 2518 { 2519 struct ifnet *ifp = ic->ic_ifp; 2520 struct rt2560_softc *sc = ifp->if_softc; 2521 2522 /* abort TSF synchronization */ 2523 RAL_WRITE(sc, RT2560_CSR14, 0); 2524 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2525 } 2526 2527 static void 2528 rt2560_scan_end(struct ieee80211com *ic) 2529 { 2530 struct ifnet *ifp = ic->ic_ifp; 2531 struct rt2560_softc *sc = ifp->if_softc; 2532 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2533 2534 rt2560_enable_tsf_sync(sc); 2535 /* XXX keep local copy */ 2536 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2537 } 2538 2539 static int 2540 rt2560_bbp_init(struct rt2560_softc *sc) 2541 { 2542 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2543 int i, ntries; 2544 2545 /* wait for BBP to be ready */ 2546 for (ntries = 0; ntries < 100; ntries++) { 2547 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2548 break; 2549 DELAY(1); 2550 } 2551 if (ntries == 100) { 2552 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2553 return EIO; 2554 } 2555 2556 /* initialize BBP registers to default values */ 2557 for (i = 0; i < N(rt2560_def_bbp); i++) { 2558 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2559 rt2560_def_bbp[i].val); 2560 } 2561 2562 /* initialize BBP registers to values stored in EEPROM */ 2563 for (i = 0; i < 16; i++) { 2564 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2565 break; 2566 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2567 } 2568 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2569 2570 return 0; 2571 #undef N 2572 } 2573 2574 static void 2575 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2576 { 2577 uint32_t tmp; 2578 uint8_t tx; 2579 2580 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2581 if (antenna == 1) 2582 tx |= RT2560_BBP_ANTA; 2583 else if (antenna == 2) 2584 tx |= RT2560_BBP_ANTB; 2585 else 2586 tx |= RT2560_BBP_DIVERSITY; 2587 2588 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2589 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2590 sc->rf_rev == RT2560_RF_5222) 2591 tx |= RT2560_BBP_FLIPIQ; 2592 2593 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2594 2595 /* update values for CCK and OFDM in BBPCSR1 */ 2596 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2597 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2598 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2599 } 2600 2601 static void 2602 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2603 { 2604 uint8_t rx; 2605 2606 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2607 if (antenna == 1) 2608 rx |= RT2560_BBP_ANTA; 2609 else if (antenna == 2) 2610 rx |= RT2560_BBP_ANTB; 2611 else 2612 rx |= RT2560_BBP_DIVERSITY; 2613 2614 /* need to force no I/Q flip for RF 2525e and 2526 */ 2615 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2616 rx &= ~RT2560_BBP_FLIPIQ; 2617 2618 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2619 } 2620 2621 static void 2622 rt2560_init_locked(struct rt2560_softc *sc) 2623 { 2624 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2625 struct ifnet *ifp = sc->sc_ifp; 2626 struct ieee80211com *ic = ifp->if_l2com; 2627 uint32_t tmp; 2628 int i; 2629 2630 RAL_LOCK_ASSERT(sc); 2631 2632 rt2560_stop_locked(sc); 2633 2634 /* setup tx rings */ 2635 tmp = RT2560_PRIO_RING_COUNT << 24 | 2636 RT2560_ATIM_RING_COUNT << 16 | 2637 RT2560_TX_RING_COUNT << 8 | 2638 RT2560_TX_DESC_SIZE; 2639 2640 /* rings must be initialized in this exact order */ 2641 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2642 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2643 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2644 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2645 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2646 2647 /* setup rx ring */ 2648 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2649 2650 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2651 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2652 2653 /* initialize MAC registers to default values */ 2654 for (i = 0; i < N(rt2560_def_mac); i++) 2655 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2656 2657 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2658 2659 /* set basic rate set (will be updated later) */ 2660 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2661 2662 rt2560_update_slot(ic); 2663 rt2560_update_plcp(sc); 2664 rt2560_update_led(sc, 0, 0); 2665 2666 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2667 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2668 2669 if (rt2560_bbp_init(sc) != 0) { 2670 rt2560_stop_locked(sc); 2671 return; 2672 } 2673 2674 rt2560_set_txantenna(sc, sc->tx_ant); 2675 rt2560_set_rxantenna(sc, sc->rx_ant); 2676 2677 /* set default BSS channel */ 2678 rt2560_set_chan(sc, ic->ic_curchan); 2679 2680 /* kick Rx */ 2681 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2682 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2683 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2684 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2685 ic->ic_opmode != IEEE80211_M_MBSS) 2686 tmp |= RT2560_DROP_TODS; 2687 if (!(ifp->if_flags & IFF_PROMISC)) 2688 tmp |= RT2560_DROP_NOT_TO_ME; 2689 } 2690 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2691 2692 /* clear old FCS and Rx FIFO errors */ 2693 RAL_READ(sc, RT2560_CNT0); 2694 RAL_READ(sc, RT2560_CNT4); 2695 2696 /* clear any pending interrupts */ 2697 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2698 2699 /* enable interrupts */ 2700 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2701 2702 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2703 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2704 2705 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2706 #undef N 2707 } 2708 2709 static void 2710 rt2560_init(void *priv) 2711 { 2712 struct rt2560_softc *sc = priv; 2713 struct ifnet *ifp = sc->sc_ifp; 2714 struct ieee80211com *ic = ifp->if_l2com; 2715 2716 RAL_LOCK(sc); 2717 rt2560_init_locked(sc); 2718 RAL_UNLOCK(sc); 2719 2720 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2721 ieee80211_start_all(ic); /* start all vap's */ 2722 } 2723 2724 static void 2725 rt2560_stop_locked(struct rt2560_softc *sc) 2726 { 2727 struct ifnet *ifp = sc->sc_ifp; 2728 volatile int *flags = &sc->sc_flags; 2729 2730 RAL_LOCK_ASSERT(sc); 2731 2732 while (*flags & RT2560_F_INPUT_RUNNING) 2733 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2734 2735 callout_stop(&sc->watchdog_ch); 2736 sc->sc_tx_timer = 0; 2737 2738 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2739 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2740 2741 /* abort Tx */ 2742 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2743 2744 /* disable Rx */ 2745 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2746 2747 /* reset ASIC (imply reset BBP) */ 2748 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2749 RAL_WRITE(sc, RT2560_CSR1, 0); 2750 2751 /* disable interrupts */ 2752 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2753 2754 /* reset Tx and Rx rings */ 2755 rt2560_reset_tx_ring(sc, &sc->txq); 2756 rt2560_reset_tx_ring(sc, &sc->atimq); 2757 rt2560_reset_tx_ring(sc, &sc->prioq); 2758 rt2560_reset_tx_ring(sc, &sc->bcnq); 2759 rt2560_reset_rx_ring(sc, &sc->rxq); 2760 } 2761 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2762 } 2763 2764 void 2765 rt2560_stop(void *arg) 2766 { 2767 struct rt2560_softc *sc = arg; 2768 2769 RAL_LOCK(sc); 2770 rt2560_stop_locked(sc); 2771 RAL_UNLOCK(sc); 2772 } 2773 2774 static int 2775 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2776 const struct ieee80211_bpf_params *params) 2777 { 2778 struct ieee80211com *ic = ni->ni_ic; 2779 struct ifnet *ifp = ic->ic_ifp; 2780 struct rt2560_softc *sc = ifp->if_softc; 2781 2782 RAL_LOCK(sc); 2783 2784 /* prevent management frames from being sent if we're not ready */ 2785 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2786 RAL_UNLOCK(sc); 2787 m_freem(m); 2788 ieee80211_free_node(ni); 2789 return ENETDOWN; 2790 } 2791 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2792 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2793 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2794 RAL_UNLOCK(sc); 2795 m_freem(m); 2796 ieee80211_free_node(ni); 2797 return ENOBUFS; /* XXX */ 2798 } 2799 2800 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2801 2802 if (params == NULL) { 2803 /* 2804 * Legacy path; interpret frame contents to decide 2805 * precisely how to send the frame. 2806 */ 2807 if (rt2560_tx_mgt(sc, m, ni) != 0) 2808 goto bad; 2809 } else { 2810 /* 2811 * Caller supplied explicit parameters to use in 2812 * sending the frame. 2813 */ 2814 if (rt2560_tx_raw(sc, m, ni, params)) 2815 goto bad; 2816 } 2817 sc->sc_tx_timer = 5; 2818 2819 RAL_UNLOCK(sc); 2820 2821 return 0; 2822 bad: 2823 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2824 ieee80211_free_node(ni); 2825 RAL_UNLOCK(sc); 2826 return EIO; /* XXX */ 2827 } 2828