1 /* $FreeBSD: head/sys/dev/ral/rt2560.c 195618 2009-07-11 15:02:45Z rpaulo $ */ 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 * $FreeBSD: head/sys/dev/ral/rt2560.c 195618 2009-07-11 15:02:45Z rpaulo $ 20 */ 21 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 #include <sys/rman.h> 42 43 #include <net/bpf.h> 44 #include <net/if.h> 45 #include <net/if_arp.h> 46 #include <net/ethernet.h> 47 #include <net/if_dl.h> 48 #include <net/if_media.h> 49 #include <net/if_types.h> 50 #include <net/ifq_var.h> 51 52 #include <netproto/802_11/ieee80211_var.h> 53 #include <netproto/802_11/ieee80211_radiotap.h> 54 #include <netproto/802_11/ieee80211_regdomain.h> 55 #include <netproto/802_11/ieee80211_ratectl.h> 56 57 #include <netinet/in.h> 58 #include <netinet/in_systm.h> 59 #include <netinet/in_var.h> 60 #include <netinet/ip.h> 61 #include <netinet/if_ether.h> 62 63 #include <dev/netif/ral/rt2560reg.h> 64 #include <dev/netif/ral/rt2560var.h> 65 66 #define RT2560_RSSI(sc, rssi) \ 67 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 68 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 69 70 #define RAL_DEBUG 71 #ifdef RAL_DEBUG 72 #define DPRINTF(sc, fmt, ...) do { \ 73 if (sc->sc_debug > 0) \ 74 kprintf(fmt, __VA_ARGS__); \ 75 } while (0) 76 #define DPRINTFN(sc, n, fmt, ...) do { \ 77 if (sc->sc_debug >= (n)) \ 78 kprintf(fmt, __VA_ARGS__); \ 79 } while (0) 80 #else 81 #define DPRINTF(sc, fmt, ...) 82 #define DPRINTFN(sc, n, fmt, ...) 83 #endif 84 85 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 86 const char name[IFNAMSIZ], int unit, 87 enum ieee80211_opmode opmode, 88 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 89 const uint8_t mac[IEEE80211_ADDR_LEN]); 90 static void rt2560_vap_delete(struct ieee80211vap *); 91 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 92 int); 93 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 94 struct rt2560_tx_ring *, int); 95 static void rt2560_reset_tx_ring(struct rt2560_softc *, 96 struct rt2560_tx_ring *); 97 static void rt2560_free_tx_ring(struct rt2560_softc *, 98 struct rt2560_tx_ring *); 99 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 100 struct rt2560_rx_ring *, int); 101 static void rt2560_reset_rx_ring(struct rt2560_softc *, 102 struct rt2560_rx_ring *); 103 static void rt2560_free_rx_ring(struct rt2560_softc *, 104 struct rt2560_rx_ring *); 105 static int rt2560_newstate(struct ieee80211vap *, 106 enum ieee80211_state, int); 107 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 108 static void rt2560_encryption_intr(struct rt2560_softc *); 109 static void rt2560_tx_intr(struct rt2560_softc *); 110 static void rt2560_prio_intr(struct rt2560_softc *); 111 static void rt2560_decryption_intr(struct rt2560_softc *); 112 static void rt2560_rx_intr(struct rt2560_softc *); 113 static void rt2560_beacon_update(struct ieee80211vap *, int item); 114 static void rt2560_beacon_expire(struct rt2560_softc *); 115 static void rt2560_wakeup_expire(struct rt2560_softc *); 116 static void rt2560_scan_start(struct ieee80211com *); 117 static void rt2560_scan_end(struct ieee80211com *); 118 static void rt2560_set_channel(struct ieee80211com *); 119 static void rt2560_setup_tx_desc(struct rt2560_softc *, 120 struct rt2560_tx_desc *, uint32_t, int, int, int, 121 bus_addr_t); 122 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 123 struct ieee80211_node *); 124 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 125 struct ieee80211_node *); 126 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128 static void rt2560_start_locked(struct ifnet *); 129 static void rt2560_start(struct ifnet *, struct ifaltq_subque *); 130 static void rt2560_watchdog_callout(void *); 131 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t, 132 struct ucred *); 133 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 134 uint8_t); 135 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 136 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 137 uint32_t); 138 static void rt2560_set_chan(struct rt2560_softc *, 139 struct ieee80211_channel *); 140 #if 0 141 static void rt2560_disable_rf_tune(struct rt2560_softc *); 142 #endif 143 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 144 static void rt2560_enable_tsf(struct rt2560_softc *); 145 static void rt2560_update_plcp(struct rt2560_softc *); 146 static void rt2560_update_slot(struct ifnet *); 147 static void rt2560_set_basicrates(struct rt2560_softc *); 148 static void rt2560_update_led(struct rt2560_softc *, int, int); 149 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 150 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 151 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 152 static void rt2560_update_promisc(struct ifnet *); 153 static const char *rt2560_get_rf(int); 154 static void rt2560_read_config(struct rt2560_softc *); 155 static int rt2560_bbp_init(struct rt2560_softc *); 156 static void rt2560_set_txantenna(struct rt2560_softc *, int); 157 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 158 static void rt2560_init_locked(struct rt2560_softc *); 159 static void rt2560_init(void *); 160 static void rt2560_stop_locked(struct rt2560_softc *); 161 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 162 const struct ieee80211_bpf_params *); 163 164 static const struct { 165 uint32_t reg; 166 uint32_t val; 167 } rt2560_def_mac[] = { 168 RT2560_DEF_MAC 169 }; 170 171 static const struct { 172 uint8_t reg; 173 uint8_t val; 174 } rt2560_def_bbp[] = { 175 RT2560_DEF_BBP 176 }; 177 178 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 179 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 180 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 181 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 182 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 183 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 184 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 185 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 186 187 static const struct { 188 uint8_t chan; 189 uint32_t r1, r2, r4; 190 } rt2560_rf5222[] = { 191 RT2560_RF5222 192 }; 193 194 int 195 rt2560_attach(device_t dev, int id) 196 { 197 struct rt2560_softc *sc = device_get_softc(dev); 198 struct ieee80211com *ic; 199 struct ifnet *ifp; 200 int error; 201 uint8_t bands; 202 uint8_t macaddr[IEEE80211_ADDR_LEN]; 203 struct sysctl_ctx_list *ctx; 204 struct sysctl_oid *tree; 205 206 sc->sc_dev = dev; 207 208 callout_init(&sc->watchdog_ch); 209 210 /* retrieve RT2560 rev. no */ 211 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 212 213 /* retrieve RF rev. no and various other things from EEPROM */ 214 rt2560_read_config(sc); 215 216 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 217 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 218 219 /* 220 * Allocate Tx and Rx rings. 221 */ 222 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 223 if (error != 0) { 224 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 225 goto fail1; 226 } 227 228 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 229 if (error != 0) { 230 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 231 goto fail2; 232 } 233 234 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 235 if (error != 0) { 236 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 237 goto fail3; 238 } 239 240 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 241 if (error != 0) { 242 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 243 goto fail4; 244 } 245 246 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 247 if (error != 0) { 248 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 249 goto fail5; 250 } 251 252 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 253 if (ifp == NULL) { 254 device_printf(sc->sc_dev, "can not if_alloc()\n"); 255 goto fail6; 256 } 257 ic = ifp->if_l2com; 258 259 /* retrieve MAC address */ 260 rt2560_get_macaddr(sc, macaddr); 261 262 ifp->if_softc = sc; 263 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 264 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 265 ifp->if_init = rt2560_init; 266 ifp->if_ioctl = rt2560_ioctl; 267 ifp->if_start = rt2560_start; 268 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); 269 #ifdef notyet 270 ifq_set_ready(&ifp->if_snd); 271 #endif 272 273 ic->ic_ifp = ifp; 274 ic->ic_opmode = IEEE80211_M_STA; 275 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 276 277 /* set device capabilities */ 278 ic->ic_caps = 279 IEEE80211_C_STA /* station mode */ 280 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 281 | IEEE80211_C_HOSTAP /* hostap mode */ 282 | IEEE80211_C_MONITOR /* monitor mode */ 283 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 284 | IEEE80211_C_WDS /* 4-address traffic works */ 285 | IEEE80211_C_MBSS /* mesh point link mode */ 286 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 287 | IEEE80211_C_SHSLOT /* short slot time supported */ 288 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 289 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 290 #ifdef notyet 291 | IEEE80211_C_TXFRAG /* handle tx frags */ 292 #endif 293 ; 294 295 bands = 0; 296 setbit(&bands, IEEE80211_MODE_11B); 297 setbit(&bands, IEEE80211_MODE_11G); 298 if (sc->rf_rev == RT2560_RF_5222) 299 setbit(&bands, IEEE80211_MODE_11A); 300 ieee80211_init_channels(ic, NULL, &bands); 301 302 ieee80211_ifattach(ic, macaddr); 303 ic->ic_raw_xmit = rt2560_raw_xmit; 304 ic->ic_updateslot = rt2560_update_slot; 305 ic->ic_update_promisc = rt2560_update_promisc; 306 ic->ic_scan_start = rt2560_scan_start; 307 ic->ic_scan_end = rt2560_scan_end; 308 ic->ic_set_channel = rt2560_set_channel; 309 310 ic->ic_vap_create = rt2560_vap_create; 311 ic->ic_vap_delete = rt2560_vap_delete; 312 313 ieee80211_radiotap_attach(ic, 314 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 315 RT2560_TX_RADIOTAP_PRESENT, 316 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 317 RT2560_RX_RADIOTAP_PRESENT); 318 319 /* 320 * Add a few sysctl knobs. 321 */ 322 ctx = &sc->sc_sysctl_ctx; 323 sysctl_ctx_init(ctx); 324 tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), 325 OID_AUTO, 326 device_get_nameunit(sc->sc_dev), 327 CTLFLAG_RD, 0, ""); 328 if (tree == NULL) { 329 device_printf(sc->sc_dev, "can't add sysctl node\n"); 330 goto fail6; 331 } 332 333 #ifdef RAL_DEBUG 334 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 335 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 336 #endif 337 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 338 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 339 340 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), 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: 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 ieee80211_ifdetach(ic); 368 369 rt2560_free_tx_ring(sc, &sc->txq); 370 rt2560_free_tx_ring(sc, &sc->atimq); 371 rt2560_free_tx_ring(sc, &sc->prioq); 372 rt2560_free_tx_ring(sc, &sc->bcnq); 373 rt2560_free_rx_ring(sc, &sc->rxq); 374 375 if_free(ifp); 376 377 return 0; 378 } 379 380 static struct ieee80211vap * 381 rt2560_vap_create(struct ieee80211com *ic, 382 const char name[IFNAMSIZ], int unit, 383 enum ieee80211_opmode opmode, int flags, 384 const uint8_t bssid[IEEE80211_ADDR_LEN], 385 const uint8_t mac[IEEE80211_ADDR_LEN]) 386 { 387 struct ifnet *ifp = ic->ic_ifp; 388 struct rt2560_vap *rvp; 389 struct ieee80211vap *vap; 390 391 switch (opmode) { 392 case IEEE80211_M_STA: 393 case IEEE80211_M_IBSS: 394 case IEEE80211_M_AHDEMO: 395 case IEEE80211_M_MONITOR: 396 case IEEE80211_M_HOSTAP: 397 case IEEE80211_M_MBSS: 398 /* XXXRP: TBD */ 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 *) kmalloc(sizeof(struct rt2560_vap), 424 M_80211_VAP, M_INTWAIT | 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_ratectl_init(vap); 436 /* complete setup */ 437 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 438 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 439 ic->ic_opmode = opmode; 440 return vap; 441 } 442 443 static void 444 rt2560_vap_delete(struct ieee80211vap *vap) 445 { 446 struct rt2560_vap *rvp = RT2560_VAP(vap); 447 448 ieee80211_ratectl_deinit(vap); 449 ieee80211_vap_detach(vap); 450 kfree(rvp, M_80211_VAP); 451 } 452 453 void 454 rt2560_resume(void *xsc) 455 { 456 struct rt2560_softc *sc = xsc; 457 struct ifnet *ifp = sc->sc_ifp; 458 459 if (ifp->if_flags & IFF_UP) 460 rt2560_init(sc); 461 } 462 463 static void 464 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 465 { 466 if (error != 0) 467 return; 468 469 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 470 471 *(bus_addr_t *)arg = segs[0].ds_addr; 472 } 473 474 static int 475 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 476 int count) 477 { 478 int i, error; 479 480 ring->count = count; 481 ring->queued = 0; 482 ring->cur = ring->next = 0; 483 ring->cur_encrypt = ring->next_encrypt = 0; 484 485 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 486 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 487 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 488 0, &ring->desc_dmat); 489 if (error != 0) { 490 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 491 goto fail; 492 } 493 494 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 495 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 496 if (error != 0) { 497 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 498 goto fail; 499 } 500 501 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 502 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 503 0); 504 if (error != 0) { 505 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 506 goto fail; 507 } 508 509 ring->data = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 510 M_INTWAIT | M_ZERO); 511 if (ring->data == NULL) { 512 device_printf(sc->sc_dev, "could not allocate soft data\n"); 513 error = ENOMEM; 514 goto fail; 515 } 516 517 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 518 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 519 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, &ring->data_dmat); 520 if (error != 0) { 521 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 522 goto fail; 523 } 524 525 for (i = 0; i < count; i++) { 526 error = bus_dmamap_create(ring->data_dmat, 0, 527 &ring->data[i].map); 528 if (error != 0) { 529 device_printf(sc->sc_dev, "could not create DMA map\n"); 530 goto fail; 531 } 532 } 533 534 return 0; 535 536 fail: rt2560_free_tx_ring(sc, ring); 537 return error; 538 } 539 540 static void 541 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 542 { 543 struct rt2560_tx_desc *desc; 544 struct rt2560_tx_data *data; 545 int i; 546 547 for (i = 0; i < ring->count; i++) { 548 desc = &ring->desc[i]; 549 data = &ring->data[i]; 550 551 if (data->m != NULL) { 552 bus_dmamap_sync(ring->data_dmat, data->map, 553 BUS_DMASYNC_POSTWRITE); 554 bus_dmamap_unload(ring->data_dmat, data->map); 555 m_freem(data->m); 556 data->m = NULL; 557 } 558 559 if (data->ni != NULL) { 560 ieee80211_free_node(data->ni); 561 data->ni = NULL; 562 } 563 564 desc->flags = 0; 565 } 566 567 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 568 569 ring->queued = 0; 570 ring->cur = ring->next = 0; 571 ring->cur_encrypt = ring->next_encrypt = 0; 572 } 573 574 static void 575 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 576 { 577 struct rt2560_tx_data *data; 578 int i; 579 580 if (ring->desc != NULL) { 581 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 582 BUS_DMASYNC_POSTWRITE); 583 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 584 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 585 } 586 587 if (ring->desc_dmat != NULL) 588 bus_dma_tag_destroy(ring->desc_dmat); 589 590 if (ring->data != NULL) { 591 for (i = 0; i < ring->count; i++) { 592 data = &ring->data[i]; 593 594 if (data->m != NULL) { 595 bus_dmamap_sync(ring->data_dmat, data->map, 596 BUS_DMASYNC_POSTWRITE); 597 bus_dmamap_unload(ring->data_dmat, data->map); 598 m_freem(data->m); 599 } 600 601 if (data->ni != NULL) 602 ieee80211_free_node(data->ni); 603 604 if (data->map != NULL) 605 bus_dmamap_destroy(ring->data_dmat, data->map); 606 } 607 608 kfree(ring->data, M_DEVBUF); 609 } 610 611 if (ring->data_dmat != NULL) 612 bus_dma_tag_destroy(ring->data_dmat); 613 } 614 615 static int 616 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 617 int count) 618 { 619 struct rt2560_rx_desc *desc; 620 struct rt2560_rx_data *data; 621 bus_addr_t physaddr; 622 int i, error; 623 624 ring->count = count; 625 ring->cur = ring->next = 0; 626 ring->cur_decrypt = 0; 627 628 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 629 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 630 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 631 0, &ring->desc_dmat); 632 if (error != 0) { 633 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 634 goto fail; 635 } 636 637 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 638 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 639 if (error != 0) { 640 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 641 goto fail; 642 } 643 644 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 645 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 646 0); 647 if (error != 0) { 648 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 649 goto fail; 650 } 651 652 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 653 M_INTWAIT | M_ZERO); 654 if (ring->data == NULL) { 655 device_printf(sc->sc_dev, "could not allocate soft data\n"); 656 error = ENOMEM; 657 goto fail; 658 } 659 660 /* 661 * Pre-allocate Rx buffers and populate Rx ring. 662 */ 663 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 664 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 665 1, MCLBYTES, 0, &ring->data_dmat); 666 if (error != 0) { 667 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 668 goto fail; 669 } 670 671 for (i = 0; i < count; i++) { 672 desc = &sc->rxq.desc[i]; 673 data = &sc->rxq.data[i]; 674 675 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 676 if (error != 0) { 677 device_printf(sc->sc_dev, "could not create DMA map\n"); 678 goto fail; 679 } 680 681 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 682 if (data->m == NULL) { 683 device_printf(sc->sc_dev, 684 "could not allocate rx mbuf\n"); 685 error = ENOMEM; 686 goto fail; 687 } 688 689 error = bus_dmamap_load(ring->data_dmat, data->map, 690 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 691 &physaddr, 0); 692 if (error != 0) { 693 device_printf(sc->sc_dev, 694 "could not load rx buf DMA map"); 695 goto fail; 696 } 697 698 desc->flags = htole32(RT2560_RX_BUSY); 699 desc->physaddr = htole32(physaddr); 700 } 701 702 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 703 704 return 0; 705 706 fail: rt2560_free_rx_ring(sc, ring); 707 return error; 708 } 709 710 static void 711 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 712 { 713 int i; 714 715 for (i = 0; i < ring->count; i++) { 716 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 717 ring->data[i].drop = 0; 718 } 719 720 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 721 722 ring->cur = ring->next = 0; 723 ring->cur_decrypt = 0; 724 } 725 726 static void 727 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 728 { 729 struct rt2560_rx_data *data; 730 int i; 731 732 if (ring->desc != NULL) { 733 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 734 BUS_DMASYNC_POSTWRITE); 735 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 736 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 737 } 738 739 if (ring->desc_dmat != NULL) 740 bus_dma_tag_destroy(ring->desc_dmat); 741 742 if (ring->data != NULL) { 743 for (i = 0; i < ring->count; i++) { 744 data = &ring->data[i]; 745 746 if (data->m != NULL) { 747 bus_dmamap_sync(ring->data_dmat, data->map, 748 BUS_DMASYNC_POSTREAD); 749 bus_dmamap_unload(ring->data_dmat, data->map); 750 m_freem(data->m); 751 } 752 753 if (data->map != NULL) 754 bus_dmamap_destroy(ring->data_dmat, data->map); 755 } 756 757 kfree(ring->data, M_DEVBUF); 758 } 759 760 if (ring->data_dmat != NULL) 761 bus_dma_tag_destroy(ring->data_dmat); 762 } 763 764 static int 765 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 766 { 767 struct rt2560_vap *rvp = RT2560_VAP(vap); 768 struct ifnet *ifp = vap->iv_ic->ic_ifp; 769 struct rt2560_softc *sc = ifp->if_softc; 770 int error; 771 772 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 773 /* abort TSF synchronization */ 774 RAL_WRITE(sc, RT2560_CSR14, 0); 775 776 /* turn association led off */ 777 rt2560_update_led(sc, 0, 0); 778 } 779 780 error = rvp->ral_newstate(vap, nstate, arg); 781 782 if (error == 0 && nstate == IEEE80211_S_RUN) { 783 struct ieee80211_node *ni = vap->iv_bss; 784 struct mbuf *m; 785 786 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 787 rt2560_update_plcp(sc); 788 rt2560_set_basicrates(sc); 789 rt2560_set_bssid(sc, ni->ni_bssid); 790 } 791 792 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 793 vap->iv_opmode == IEEE80211_M_IBSS || 794 vap->iv_opmode == IEEE80211_M_MBSS) { 795 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 796 if (m == NULL) { 797 if_printf(ifp, "could not allocate beacon\n"); 798 return ENOBUFS; 799 } 800 ieee80211_ref_node(ni); 801 error = rt2560_tx_bcn(sc, m, ni); 802 if (error != 0) 803 return error; 804 } 805 806 /* turn assocation led on */ 807 rt2560_update_led(sc, 1, 0); 808 809 if (vap->iv_opmode != IEEE80211_M_MONITOR) 810 rt2560_enable_tsf_sync(sc); 811 else 812 rt2560_enable_tsf(sc); 813 } 814 return error; 815 } 816 817 /* 818 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 819 * 93C66). 820 */ 821 static uint16_t 822 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 823 { 824 uint32_t tmp; 825 uint16_t val; 826 int n; 827 828 /* clock C once before the first command */ 829 RT2560_EEPROM_CTL(sc, 0); 830 831 RT2560_EEPROM_CTL(sc, RT2560_S); 832 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 833 RT2560_EEPROM_CTL(sc, RT2560_S); 834 835 /* write start bit (1) */ 836 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 837 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 838 839 /* write READ opcode (10) */ 840 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 841 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 842 RT2560_EEPROM_CTL(sc, RT2560_S); 843 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 844 845 /* write address (A5-A0 or A7-A0) */ 846 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 847 for (; n >= 0; n--) { 848 RT2560_EEPROM_CTL(sc, RT2560_S | 849 (((addr >> n) & 1) << RT2560_SHIFT_D)); 850 RT2560_EEPROM_CTL(sc, RT2560_S | 851 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 852 } 853 854 RT2560_EEPROM_CTL(sc, RT2560_S); 855 856 /* read data Q15-Q0 */ 857 val = 0; 858 for (n = 15; n >= 0; n--) { 859 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 860 tmp = RAL_READ(sc, RT2560_CSR21); 861 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 862 RT2560_EEPROM_CTL(sc, RT2560_S); 863 } 864 865 RT2560_EEPROM_CTL(sc, 0); 866 867 /* clear Chip Select and clock C */ 868 RT2560_EEPROM_CTL(sc, RT2560_S); 869 RT2560_EEPROM_CTL(sc, 0); 870 RT2560_EEPROM_CTL(sc, RT2560_C); 871 872 return val; 873 } 874 875 /* 876 * Some frames were processed by the hardware cipher engine and are ready for 877 * transmission. 878 */ 879 static void 880 rt2560_encryption_intr(struct rt2560_softc *sc) 881 { 882 struct rt2560_tx_desc *desc; 883 int hw; 884 885 /* retrieve last descriptor index processed by cipher engine */ 886 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 887 hw /= RT2560_TX_DESC_SIZE; 888 889 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 890 BUS_DMASYNC_POSTREAD); 891 892 while (sc->txq.next_encrypt != hw) { 893 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 894 kprintf("hw encrypt %d, cur_encrypt %d\n", hw, 895 sc->txq.cur_encrypt); 896 break; 897 } 898 899 desc = &sc->txq.desc[sc->txq.next_encrypt]; 900 901 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 902 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 903 break; 904 905 /* for TKIP, swap eiv field to fix a bug in ASIC */ 906 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 907 RT2560_TX_CIPHER_TKIP) 908 desc->eiv = bswap32(desc->eiv); 909 910 /* mark the frame ready for transmission */ 911 desc->flags |= htole32(RT2560_TX_VALID); 912 desc->flags |= htole32(RT2560_TX_BUSY); 913 914 DPRINTFN(sc, 15, "encryption done idx=%u\n", 915 sc->txq.next_encrypt); 916 917 sc->txq.next_encrypt = 918 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 919 } 920 921 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 922 BUS_DMASYNC_PREWRITE); 923 924 /* kick Tx */ 925 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 926 } 927 928 static void 929 rt2560_tx_intr(struct rt2560_softc *sc) 930 { 931 struct ifnet *ifp = sc->sc_ifp; 932 struct rt2560_tx_desc *desc; 933 struct rt2560_tx_data *data; 934 struct mbuf *m; 935 uint32_t flags; 936 int retrycnt; 937 struct ieee80211vap *vap; 938 struct ieee80211_node *ni; 939 940 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 941 BUS_DMASYNC_POSTREAD); 942 943 for (;;) { 944 desc = &sc->txq.desc[sc->txq.next]; 945 data = &sc->txq.data[sc->txq.next]; 946 947 flags = le32toh(desc->flags); 948 if ((flags & RT2560_TX_BUSY) || 949 (flags & RT2560_TX_CIPHER_BUSY) || 950 !(flags & RT2560_TX_VALID)) 951 break; 952 953 m = data->m; 954 ni = data->ni; 955 vap = ni->ni_vap; 956 957 switch (flags & RT2560_TX_RESULT_MASK) { 958 case RT2560_TX_SUCCESS: 959 retrycnt = 0; 960 961 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 962 if (data->rix != IEEE80211_FIXED_RATE_NONE) 963 ieee80211_ratectl_tx_complete(vap, ni, 964 IEEE80211_RATECTL_TX_SUCCESS, 965 &retrycnt, NULL); 966 IFNET_STAT_INC(ifp, opackets, 1); 967 break; 968 969 case RT2560_TX_SUCCESS_RETRY: 970 retrycnt = RT2560_TX_RETRYCNT(flags); 971 972 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 973 retrycnt); 974 if (data->rix != IEEE80211_FIXED_RATE_NONE) 975 ieee80211_ratectl_tx_complete(vap, ni, 976 IEEE80211_RATECTL_TX_SUCCESS, 977 &retrycnt, NULL); 978 IFNET_STAT_INC(ifp, opackets, 1); 979 break; 980 981 case RT2560_TX_FAIL_RETRY: 982 retrycnt = RT2560_TX_RETRYCNT(flags); 983 984 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 985 retrycnt); 986 if (data->rix != IEEE80211_FIXED_RATE_NONE) 987 ieee80211_ratectl_tx_complete(vap, ni, 988 IEEE80211_RATECTL_TX_FAILURE, 989 &retrycnt, NULL); 990 IFNET_STAT_INC(ifp, oerrors, 1); 991 break; 992 993 case RT2560_TX_FAIL_INVALID: 994 case RT2560_TX_FAIL_OTHER: 995 default: 996 device_printf(sc->sc_dev, "sending data frame failed " 997 "0x%08x\n", flags); 998 IFNET_STAT_INC(ifp, oerrors, 1); 999 } 1000 1001 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1002 BUS_DMASYNC_POSTWRITE); 1003 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1004 m_freem(m); 1005 data->m = NULL; 1006 ieee80211_free_node(data->ni); 1007 data->ni = NULL; 1008 ni = NULL; 1009 1010 /* descriptor is no longer valid */ 1011 desc->flags &= ~htole32(RT2560_TX_VALID); 1012 1013 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1014 1015 sc->txq.queued--; 1016 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1017 } 1018 1019 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1020 BUS_DMASYNC_PREWRITE); 1021 1022 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1023 sc->sc_tx_timer = 0; 1024 1025 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1026 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1027 if ((sc->sc_flags & 1028 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1029 ifq_clr_oactive(&ifp->if_snd); 1030 rt2560_start_locked(ifp); 1031 } 1032 } 1033 1034 static void 1035 rt2560_prio_intr(struct rt2560_softc *sc) 1036 { 1037 struct ifnet *ifp = sc->sc_ifp; 1038 struct rt2560_tx_desc *desc; 1039 struct rt2560_tx_data *data; 1040 struct ieee80211_node *ni; 1041 struct mbuf *m; 1042 int flags; 1043 1044 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1045 BUS_DMASYNC_POSTREAD); 1046 1047 for (;;) { 1048 desc = &sc->prioq.desc[sc->prioq.next]; 1049 data = &sc->prioq.data[sc->prioq.next]; 1050 1051 flags = le32toh(desc->flags); 1052 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1053 break; 1054 1055 switch (flags & RT2560_TX_RESULT_MASK) { 1056 case RT2560_TX_SUCCESS: 1057 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1058 break; 1059 1060 case RT2560_TX_SUCCESS_RETRY: 1061 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1062 (flags >> 5) & 0x7); 1063 break; 1064 1065 case RT2560_TX_FAIL_RETRY: 1066 DPRINTFN(sc, 9, "%s\n", 1067 "sending mgt frame failed (too much retries)"); 1068 break; 1069 1070 case RT2560_TX_FAIL_INVALID: 1071 case RT2560_TX_FAIL_OTHER: 1072 default: 1073 device_printf(sc->sc_dev, "sending mgt frame failed " 1074 "0x%08x\n", flags); 1075 break; 1076 } 1077 1078 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1079 BUS_DMASYNC_POSTWRITE); 1080 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1081 1082 m = data->m; 1083 data->m = NULL; 1084 ni = data->ni; 1085 data->ni = NULL; 1086 1087 /* descriptor is no longer valid */ 1088 desc->flags &= ~htole32(RT2560_TX_VALID); 1089 1090 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1091 1092 sc->prioq.queued--; 1093 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1094 1095 if (m->m_flags & M_TXCB) 1096 ieee80211_process_callback(ni, m, 1097 (flags & RT2560_TX_RESULT_MASK) &~ 1098 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1099 m_freem(m); 1100 ieee80211_free_node(ni); 1101 } 1102 1103 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1104 BUS_DMASYNC_PREWRITE); 1105 1106 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1107 sc->sc_tx_timer = 0; 1108 1109 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1110 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1111 if ((sc->sc_flags & 1112 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1113 ifq_clr_oactive(&ifp->if_snd); 1114 rt2560_start_locked(ifp); 1115 } 1116 } 1117 1118 /* 1119 * Some frames were processed by the hardware cipher engine and are ready for 1120 * handoff to the IEEE802.11 layer. 1121 */ 1122 static void 1123 rt2560_decryption_intr(struct rt2560_softc *sc) 1124 { 1125 struct ifnet *ifp = sc->sc_ifp; 1126 struct ieee80211com *ic = ifp->if_l2com; 1127 struct rt2560_rx_desc *desc; 1128 struct rt2560_rx_data *data; 1129 bus_addr_t physaddr; 1130 struct ieee80211_frame *wh; 1131 struct ieee80211_node *ni; 1132 struct mbuf *mnew, *m; 1133 int hw, error; 1134 int8_t rssi, nf; 1135 1136 /* retrieve last decriptor index processed by cipher engine */ 1137 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1138 hw /= RT2560_RX_DESC_SIZE; 1139 1140 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1141 BUS_DMASYNC_POSTREAD); 1142 1143 for (; sc->rxq.cur_decrypt != hw;) { 1144 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1145 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1146 1147 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1148 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1149 break; 1150 1151 if (data->drop) { 1152 IFNET_STAT_INC(ifp, ierrors, 1); 1153 goto skip; 1154 } 1155 1156 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1157 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1158 IFNET_STAT_INC(ifp, ierrors, 1); 1159 goto skip; 1160 } 1161 1162 /* 1163 * Try to allocate a new mbuf for this ring element and load it 1164 * before processing the current mbuf. If the ring element 1165 * cannot be loaded, drop the received packet and reuse the old 1166 * mbuf. In the unlikely case that the old mbuf can't be 1167 * reloaded either, explicitly panic. 1168 */ 1169 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 1170 if (mnew == NULL) { 1171 IFNET_STAT_INC(ifp, ierrors, 1); 1172 goto skip; 1173 } 1174 1175 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1176 BUS_DMASYNC_POSTREAD); 1177 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1178 1179 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1180 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1181 &physaddr, 0); 1182 if (error != 0) { 1183 m_freem(mnew); 1184 1185 /* try to reload the old mbuf */ 1186 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1187 mtod(data->m, void *), MCLBYTES, 1188 rt2560_dma_map_addr, &physaddr, 0); 1189 if (error != 0) { 1190 /* very unlikely that it will fail... */ 1191 panic("%s: could not load old rx mbuf", 1192 device_get_name(sc->sc_dev)); 1193 } 1194 IFNET_STAT_INC(ifp, ierrors, 1); 1195 goto skip; 1196 } 1197 1198 /* 1199 * New mbuf successfully loaded, update Rx ring and continue 1200 * processing. 1201 */ 1202 m = data->m; 1203 data->m = mnew; 1204 desc->physaddr = htole32(physaddr); 1205 1206 /* finalize mbuf */ 1207 m->m_pkthdr.rcvif = ifp; 1208 m->m_pkthdr.len = m->m_len = 1209 (le32toh(desc->flags) >> 16) & 0xfff; 1210 1211 rssi = RT2560_RSSI(sc, desc->rssi); 1212 nf = RT2560_NOISE_FLOOR; 1213 if (ieee80211_radiotap_active(ic)) { 1214 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1215 uint32_t tsf_lo, tsf_hi; 1216 1217 /* get timestamp (low and high 32 bits) */ 1218 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1219 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1220 1221 tap->wr_tsf = 1222 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1223 tap->wr_flags = 0; 1224 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1225 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1226 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1227 tap->wr_antenna = sc->rx_ant; 1228 tap->wr_antsignal = nf + rssi; 1229 tap->wr_antnoise = nf; 1230 } 1231 1232 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1233 wh = mtod(m, struct ieee80211_frame *); 1234 ni = ieee80211_find_rxnode(ic, 1235 (struct ieee80211_frame_min *)wh); 1236 if (ni != NULL) { 1237 (void) ieee80211_input(ni, m, rssi, nf); 1238 ieee80211_free_node(ni); 1239 } else 1240 (void) ieee80211_input_all(ic, m, rssi, nf); 1241 1242 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1243 skip: desc->flags = htole32(RT2560_RX_BUSY); 1244 1245 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1246 1247 sc->rxq.cur_decrypt = 1248 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1249 } 1250 1251 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1252 BUS_DMASYNC_PREWRITE); 1253 } 1254 1255 /* 1256 * Some frames were received. Pass them to the hardware cipher engine before 1257 * sending them to the 802.11 layer. 1258 */ 1259 static void 1260 rt2560_rx_intr(struct rt2560_softc *sc) 1261 { 1262 struct rt2560_rx_desc *desc; 1263 struct rt2560_rx_data *data; 1264 1265 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1266 BUS_DMASYNC_POSTREAD); 1267 1268 for (;;) { 1269 desc = &sc->rxq.desc[sc->rxq.cur]; 1270 data = &sc->rxq.data[sc->rxq.cur]; 1271 1272 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1273 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1274 break; 1275 1276 data->drop = 0; 1277 1278 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1279 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1280 /* 1281 * This should not happen since we did not request 1282 * to receive those frames when we filled RXCSR0. 1283 */ 1284 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1285 le32toh(desc->flags)); 1286 data->drop = 1; 1287 } 1288 1289 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1290 DPRINTFN(sc, 5, "%s\n", "bad length"); 1291 data->drop = 1; 1292 } 1293 1294 /* mark the frame for decryption */ 1295 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1296 1297 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1298 1299 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1300 } 1301 1302 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1303 BUS_DMASYNC_PREWRITE); 1304 1305 /* kick decrypt */ 1306 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1307 } 1308 1309 static void 1310 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1311 { 1312 struct rt2560_vap *rvp = RT2560_VAP(vap); 1313 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1314 1315 setbit(bo->bo_flags, item); 1316 } 1317 1318 /* 1319 * This function is called periodically in IBSS mode when a new beacon must be 1320 * sent out. 1321 */ 1322 static void 1323 rt2560_beacon_expire(struct rt2560_softc *sc) 1324 { 1325 struct ifnet *ifp = sc->sc_ifp; 1326 struct ieee80211com *ic = ifp->if_l2com; 1327 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1328 struct rt2560_vap *rvp = RT2560_VAP(vap); 1329 struct rt2560_tx_data *data; 1330 1331 if (ic->ic_opmode != IEEE80211_M_IBSS && 1332 ic->ic_opmode != IEEE80211_M_HOSTAP && 1333 ic->ic_opmode != IEEE80211_M_MBSS) 1334 return; 1335 1336 data = &sc->bcnq.data[sc->bcnq.next]; 1337 /* 1338 * Don't send beacon if bsschan isn't set 1339 */ 1340 if (data->ni == NULL) 1341 return; 1342 1343 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1344 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1345 1346 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1347 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1348 1349 rt2560_tx_bcn(sc, data->m, data->ni); 1350 1351 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1352 1353 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1354 } 1355 1356 /* ARGSUSED */ 1357 static void 1358 rt2560_wakeup_expire(struct rt2560_softc *sc) 1359 { 1360 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1361 } 1362 1363 void 1364 rt2560_intr(void *arg) 1365 { 1366 struct rt2560_softc *sc = arg; 1367 struct ifnet *ifp = sc->sc_ifp; 1368 uint32_t r; 1369 1370 /* disable interrupts */ 1371 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1372 1373 /* don't re-enable interrupts if we're shutting down */ 1374 if (!(ifp->if_flags & IFF_RUNNING)) { 1375 return; 1376 } 1377 1378 r = RAL_READ(sc, RT2560_CSR7); 1379 RAL_WRITE(sc, RT2560_CSR7, r); 1380 1381 if (r & RT2560_BEACON_EXPIRE) 1382 rt2560_beacon_expire(sc); 1383 1384 if (r & RT2560_WAKEUP_EXPIRE) 1385 rt2560_wakeup_expire(sc); 1386 1387 if (r & RT2560_ENCRYPTION_DONE) 1388 rt2560_encryption_intr(sc); 1389 1390 if (r & RT2560_TX_DONE) 1391 rt2560_tx_intr(sc); 1392 1393 if (r & RT2560_PRIO_DONE) 1394 rt2560_prio_intr(sc); 1395 1396 if (r & RT2560_DECRYPTION_DONE) 1397 rt2560_decryption_intr(sc); 1398 1399 if (r & RT2560_RX_DONE) { 1400 rt2560_rx_intr(sc); 1401 rt2560_encryption_intr(sc); 1402 } 1403 1404 /* re-enable interrupts */ 1405 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1406 } 1407 1408 #define RAL_SIFS 10 /* us */ 1409 1410 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1411 1412 static uint8_t 1413 rt2560_plcp_signal(int rate) 1414 { 1415 switch (rate) { 1416 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1417 case 12: return 0xb; 1418 case 18: return 0xf; 1419 case 24: return 0xa; 1420 case 36: return 0xe; 1421 case 48: return 0x9; 1422 case 72: return 0xd; 1423 case 96: return 0x8; 1424 case 108: return 0xc; 1425 1426 /* CCK rates (NB: not IEEE std, device-specific) */ 1427 case 2: return 0x0; 1428 case 4: return 0x1; 1429 case 11: return 0x2; 1430 case 22: return 0x3; 1431 } 1432 return 0xff; /* XXX unsupported/unknown rate */ 1433 } 1434 1435 static void 1436 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1437 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1438 { 1439 struct ifnet *ifp = sc->sc_ifp; 1440 struct ieee80211com *ic = ifp->if_l2com; 1441 uint16_t plcp_length; 1442 int remainder; 1443 1444 desc->flags = htole32(flags); 1445 desc->flags |= htole32(len << 16); 1446 1447 desc->physaddr = htole32(physaddr); 1448 desc->wme = htole16( 1449 RT2560_AIFSN(2) | 1450 RT2560_LOGCWMIN(3) | 1451 RT2560_LOGCWMAX(8)); 1452 1453 /* setup PLCP fields */ 1454 desc->plcp_signal = rt2560_plcp_signal(rate); 1455 desc->plcp_service = 4; 1456 1457 len += IEEE80211_CRC_LEN; 1458 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1459 desc->flags |= htole32(RT2560_TX_OFDM); 1460 1461 plcp_length = len & 0xfff; 1462 desc->plcp_length_hi = plcp_length >> 6; 1463 desc->plcp_length_lo = plcp_length & 0x3f; 1464 } else { 1465 plcp_length = (16 * len + rate - 1) / rate; 1466 if (rate == 22) { 1467 remainder = (16 * len) % 22; 1468 if (remainder != 0 && remainder < 7) 1469 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1470 } 1471 desc->plcp_length_hi = plcp_length >> 8; 1472 desc->plcp_length_lo = plcp_length & 0xff; 1473 1474 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1475 desc->plcp_signal |= 0x08; 1476 } 1477 1478 if (!encrypt) 1479 desc->flags |= htole32(RT2560_TX_VALID); 1480 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1481 : htole32(RT2560_TX_BUSY); 1482 } 1483 1484 static int 1485 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1486 struct ieee80211_node *ni) 1487 { 1488 struct ieee80211vap *vap = ni->ni_vap; 1489 struct rt2560_tx_desc *desc; 1490 struct rt2560_tx_data *data; 1491 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1492 int nsegs, rate, error; 1493 1494 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1495 data = &sc->bcnq.data[sc->bcnq.cur]; 1496 1497 /* XXX maybe a separate beacon rate? */ 1498 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1499 1500 error = bus_dmamap_load_mbuf_segment(sc->bcnq.data_dmat, data->map, m0, 1501 segs, 1, &nsegs, BUS_DMA_NOWAIT); 1502 if (error != 0) { 1503 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1504 error); 1505 m_freem(m0); 1506 return error; 1507 } 1508 1509 if (ieee80211_radiotap_active_vap(vap)) { 1510 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1511 1512 tap->wt_flags = 0; 1513 tap->wt_rate = rate; 1514 tap->wt_antenna = sc->tx_ant; 1515 1516 ieee80211_radiotap_tx(vap, m0); 1517 } 1518 1519 data->m = m0; 1520 data->ni = ni; 1521 1522 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1523 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1524 1525 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1526 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1527 1528 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1529 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1530 BUS_DMASYNC_PREWRITE); 1531 1532 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1533 1534 return 0; 1535 } 1536 1537 static int 1538 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1539 struct ieee80211_node *ni) 1540 { 1541 struct ieee80211vap *vap = ni->ni_vap; 1542 struct ieee80211com *ic = ni->ni_ic; 1543 struct rt2560_tx_desc *desc; 1544 struct rt2560_tx_data *data; 1545 struct ieee80211_frame *wh; 1546 struct ieee80211_key *k; 1547 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1548 uint16_t dur; 1549 uint32_t flags = 0; 1550 int nsegs, rate, error; 1551 1552 desc = &sc->prioq.desc[sc->prioq.cur]; 1553 data = &sc->prioq.data[sc->prioq.cur]; 1554 1555 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1556 1557 wh = mtod(m0, struct ieee80211_frame *); 1558 1559 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1560 k = ieee80211_crypto_encap(ni, m0); 1561 if (k == NULL) { 1562 m_freem(m0); 1563 return ENOBUFS; 1564 } 1565 } 1566 1567 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1568 segs, 1, &nsegs, 0); 1569 if (error != 0) { 1570 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1571 error); 1572 m_freem(m0); 1573 return error; 1574 } 1575 1576 if (ieee80211_radiotap_active_vap(vap)) { 1577 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1578 1579 tap->wt_flags = 0; 1580 tap->wt_rate = rate; 1581 tap->wt_antenna = sc->tx_ant; 1582 1583 ieee80211_radiotap_tx(vap, m0); 1584 } 1585 1586 data->m = m0; 1587 data->ni = ni; 1588 /* management frames are not taken into account for amrr */ 1589 data->rix = IEEE80211_FIXED_RATE_NONE; 1590 1591 wh = mtod(m0, struct ieee80211_frame *); 1592 1593 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1594 flags |= RT2560_TX_ACK; 1595 1596 dur = ieee80211_ack_duration(ic->ic_rt, 1597 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1598 *(uint16_t *)wh->i_dur = htole16(dur); 1599 1600 /* tell hardware to add timestamp for probe responses */ 1601 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1602 IEEE80211_FC0_TYPE_MGT && 1603 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1604 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1605 flags |= RT2560_TX_TIMESTAMP; 1606 } 1607 1608 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1609 segs->ds_addr); 1610 1611 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1612 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1613 BUS_DMASYNC_PREWRITE); 1614 1615 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1616 m0->m_pkthdr.len, sc->prioq.cur, rate); 1617 1618 /* kick prio */ 1619 sc->prioq.queued++; 1620 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1621 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1622 1623 return 0; 1624 } 1625 1626 static int 1627 rt2560_sendprot(struct rt2560_softc *sc, 1628 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1629 { 1630 struct ieee80211com *ic = ni->ni_ic; 1631 const struct ieee80211_frame *wh; 1632 struct rt2560_tx_desc *desc; 1633 struct rt2560_tx_data *data; 1634 struct mbuf *mprot; 1635 int protrate, pktlen, flags, isshort, error; 1636 uint16_t dur; 1637 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1638 int nsegs; 1639 1640 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1641 ("protection %d", prot)); 1642 1643 wh = mtod(m, const struct ieee80211_frame *); 1644 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1645 1646 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1647 ieee80211_ack_rate(ic->ic_rt, rate); 1648 1649 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1650 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1651 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1652 flags = RT2560_TX_MORE_FRAG; 1653 if (prot == IEEE80211_PROT_RTSCTS) { 1654 /* NB: CTS is the same size as an ACK */ 1655 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1656 flags |= RT2560_TX_ACK; 1657 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1658 } else { 1659 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1660 } 1661 if (mprot == NULL) { 1662 /* XXX stat + msg */ 1663 return ENOBUFS; 1664 } 1665 1666 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1667 data = &sc->txq.data[sc->txq.cur_encrypt]; 1668 1669 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1670 mprot, segs, 1, &nsegs, 0); 1671 if (error != 0) { 1672 device_printf(sc->sc_dev, 1673 "could not map mbuf (error %d)\n", error); 1674 m_freem(mprot); 1675 return error; 1676 } 1677 1678 data->m = mprot; 1679 data->ni = ieee80211_ref_node(ni); 1680 /* ctl frames are not taken into account for amrr */ 1681 data->rix = IEEE80211_FIXED_RATE_NONE; 1682 1683 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1684 segs->ds_addr); 1685 1686 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1687 BUS_DMASYNC_PREWRITE); 1688 1689 sc->txq.queued++; 1690 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1691 1692 return 0; 1693 } 1694 1695 static int 1696 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1697 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1698 { 1699 struct ieee80211vap *vap = ni->ni_vap; 1700 struct ieee80211com *ic = ni->ni_ic; 1701 struct rt2560_tx_desc *desc; 1702 struct rt2560_tx_data *data; 1703 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1704 uint32_t flags; 1705 int nsegs, rate, error; 1706 1707 desc = &sc->prioq.desc[sc->prioq.cur]; 1708 data = &sc->prioq.data[sc->prioq.cur]; 1709 1710 rate = params->ibp_rate0; 1711 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1712 /* XXX fall back to mcast/mgmt rate? */ 1713 m_freem(m0); 1714 return EINVAL; 1715 } 1716 1717 flags = 0; 1718 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1719 flags |= RT2560_TX_ACK; 1720 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1721 error = rt2560_sendprot(sc, m0, ni, 1722 params->ibp_flags & IEEE80211_BPF_RTS ? 1723 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1724 rate); 1725 if (error) { 1726 m_freem(m0); 1727 return error; 1728 } 1729 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1730 } 1731 1732 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1733 segs, 1, &nsegs, 0); 1734 if (error != 0) { 1735 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1736 error); 1737 m_freem(m0); 1738 return error; 1739 } 1740 1741 if (ieee80211_radiotap_active_vap(vap)) { 1742 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1743 1744 tap->wt_flags = 0; 1745 tap->wt_rate = rate; 1746 tap->wt_antenna = sc->tx_ant; 1747 1748 ieee80211_radiotap_tx(ni->ni_vap, m0); 1749 } 1750 1751 data->m = m0; 1752 data->ni = ni; 1753 1754 /* XXX need to setup descriptor ourself */ 1755 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1756 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1757 segs->ds_addr); 1758 1759 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1760 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1761 BUS_DMASYNC_PREWRITE); 1762 1763 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1764 m0->m_pkthdr.len, sc->prioq.cur, rate); 1765 1766 /* kick prio */ 1767 sc->prioq.queued++; 1768 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1769 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1770 1771 return 0; 1772 } 1773 1774 static int 1775 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1776 struct ieee80211_node *ni) 1777 { 1778 struct ieee80211vap *vap = ni->ni_vap; 1779 struct ieee80211com *ic = ni->ni_ic; 1780 struct rt2560_tx_desc *desc; 1781 struct rt2560_tx_data *data; 1782 struct ieee80211_frame *wh; 1783 const struct ieee80211_txparam *tp; 1784 struct ieee80211_key *k; 1785 struct mbuf *mnew; 1786 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1787 uint16_t dur; 1788 uint32_t flags; 1789 int nsegs, rate, error; 1790 1791 wh = mtod(m0, struct ieee80211_frame *); 1792 1793 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1794 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1795 rate = tp->mcastrate; 1796 } else if (m0->m_flags & M_EAPOL) { 1797 rate = tp->mgmtrate; 1798 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1799 rate = tp->ucastrate; 1800 } else { 1801 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1802 rate = ni->ni_txrate; 1803 } 1804 1805 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1806 k = ieee80211_crypto_encap(ni, m0); 1807 if (k == NULL) { 1808 m_freem(m0); 1809 return ENOBUFS; 1810 } 1811 1812 /* packet header may have moved, reset our local pointer */ 1813 wh = mtod(m0, struct ieee80211_frame *); 1814 } 1815 1816 flags = 0; 1817 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1818 int prot = IEEE80211_PROT_NONE; 1819 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1820 prot = IEEE80211_PROT_RTSCTS; 1821 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1822 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1823 prot = ic->ic_protmode; 1824 if (prot != IEEE80211_PROT_NONE) { 1825 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1826 if (error) { 1827 m_freem(m0); 1828 return error; 1829 } 1830 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1831 } 1832 } 1833 1834 data = &sc->txq.data[sc->txq.cur_encrypt]; 1835 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1836 1837 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, m0, 1838 segs, 1, &nsegs, 0); 1839 if (error != 0 && error != EFBIG) { 1840 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1841 error); 1842 m_freem(m0); 1843 return error; 1844 } 1845 if (error != 0) { 1846 mnew = m_defrag(m0, MB_DONTWAIT); 1847 if (mnew == NULL) { 1848 device_printf(sc->sc_dev, 1849 "could not defragment mbuf\n"); 1850 m_freem(m0); 1851 return ENOBUFS; 1852 } 1853 m0 = mnew; 1854 1855 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1856 m0, segs, 1, &nsegs, 0); 1857 if (error != 0) { 1858 device_printf(sc->sc_dev, 1859 "could not map mbuf (error %d)\n", error); 1860 m_freem(m0); 1861 return error; 1862 } 1863 1864 /* packet header may have moved, reset our local pointer */ 1865 wh = mtod(m0, struct ieee80211_frame *); 1866 } 1867 1868 if (ieee80211_radiotap_active_vap(vap)) { 1869 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1870 1871 tap->wt_flags = 0; 1872 tap->wt_rate = rate; 1873 tap->wt_antenna = sc->tx_ant; 1874 1875 ieee80211_radiotap_tx(vap, m0); 1876 } 1877 1878 data->m = m0; 1879 data->ni = ni; 1880 1881 /* remember link conditions for rate adaptation algorithm */ 1882 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1883 data->rix = ni->ni_txrate; 1884 /* XXX probably need last rssi value and not avg */ 1885 data->rssi = ic->ic_node_getrssi(ni); 1886 } else 1887 data->rix = IEEE80211_FIXED_RATE_NONE; 1888 1889 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1890 flags |= RT2560_TX_ACK; 1891 1892 dur = ieee80211_ack_duration(ic->ic_rt, 1893 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1894 *(uint16_t *)wh->i_dur = htole16(dur); 1895 } 1896 1897 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1898 segs->ds_addr); 1899 1900 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1901 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1902 BUS_DMASYNC_PREWRITE); 1903 1904 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1905 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1906 1907 /* kick encrypt */ 1908 sc->txq.queued++; 1909 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1910 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1911 1912 return 0; 1913 } 1914 1915 static void 1916 rt2560_start_locked(struct ifnet *ifp) 1917 { 1918 struct rt2560_softc *sc = ifp->if_softc; 1919 struct mbuf *m; 1920 struct ieee80211_node *ni; 1921 1922 for (;;) { 1923 m = ifq_dequeue(&ifp->if_snd); 1924 if (m == NULL) 1925 break; 1926 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1927 ifq_prepend(&ifp->if_snd, m); 1928 ifq_set_oactive(&ifp->if_snd); 1929 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1930 break; 1931 } 1932 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1933 if (rt2560_tx_data(sc, m, ni) != 0) { 1934 ieee80211_free_node(ni); 1935 IFNET_STAT_INC(ifp, oerrors, 1); 1936 break; 1937 } 1938 1939 sc->sc_tx_timer = 5; 1940 } 1941 } 1942 1943 static void 1944 rt2560_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1945 { 1946 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1947 rt2560_start_locked(ifp); 1948 } 1949 1950 static void 1951 rt2560_watchdog_callout(void *arg) 1952 { 1953 struct rt2560_softc *sc = arg; 1954 struct ifnet *ifp = sc->sc_ifp; 1955 1956 KASSERT(ifp->if_flags & IFF_RUNNING, ("not running")); 1957 1958 if (sc->sc_invalid) /* card ejected */ 1959 return; 1960 1961 rt2560_encryption_intr(sc); 1962 rt2560_tx_intr(sc); 1963 1964 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1965 if_printf(ifp, "device timeout\n"); 1966 rt2560_init_locked(sc); 1967 IFNET_STAT_INC(ifp, oerrors, 1); 1968 /* NB: callout is reset in rt2560_init() */ 1969 return; 1970 } 1971 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 1972 } 1973 1974 static int 1975 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred) 1976 { 1977 struct rt2560_softc *sc = ifp->if_softc; 1978 struct ieee80211com *ic = ifp->if_l2com; 1979 struct ifreq *ifr = (struct ifreq *) data; 1980 int error = 0, startall = 0; 1981 1982 switch (cmd) { 1983 case SIOCSIFFLAGS: 1984 if (ifp->if_flags & IFF_UP) { 1985 if ((ifp->if_flags & IFF_RUNNING) == 0) { 1986 rt2560_init_locked(sc); 1987 startall = 1; 1988 } else 1989 rt2560_update_promisc(ifp); 1990 } else { 1991 if (ifp->if_flags & IFF_RUNNING) 1992 rt2560_stop_locked(sc); 1993 } 1994 if (startall) 1995 ieee80211_start_all(ic); 1996 break; 1997 case SIOCGIFMEDIA: 1998 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1999 break; 2000 case SIOCGIFADDR: 2001 error = ether_ioctl(ifp, cmd, data); 2002 break; 2003 default: 2004 error = EINVAL; 2005 break; 2006 } 2007 return error; 2008 } 2009 2010 static void 2011 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2012 { 2013 uint32_t tmp; 2014 int ntries; 2015 2016 for (ntries = 0; ntries < 100; ntries++) { 2017 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2018 break; 2019 DELAY(1); 2020 } 2021 if (ntries == 100) { 2022 device_printf(sc->sc_dev, "could not write to BBP\n"); 2023 return; 2024 } 2025 2026 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2027 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2028 2029 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2030 } 2031 2032 static uint8_t 2033 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2034 { 2035 uint32_t val; 2036 int ntries; 2037 2038 for (ntries = 0; ntries < 100; ntries++) { 2039 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2040 break; 2041 DELAY(1); 2042 } 2043 if (ntries == 100) { 2044 device_printf(sc->sc_dev, "could not read from BBP\n"); 2045 return 0; 2046 } 2047 2048 val = RT2560_BBP_BUSY | reg << 8; 2049 RAL_WRITE(sc, RT2560_BBPCSR, val); 2050 2051 for (ntries = 0; ntries < 100; ntries++) { 2052 val = RAL_READ(sc, RT2560_BBPCSR); 2053 if (!(val & RT2560_BBP_BUSY)) 2054 return val & 0xff; 2055 DELAY(1); 2056 } 2057 2058 device_printf(sc->sc_dev, "could not read from BBP\n"); 2059 return 0; 2060 } 2061 2062 static void 2063 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2064 { 2065 uint32_t tmp; 2066 int ntries; 2067 2068 for (ntries = 0; ntries < 100; ntries++) { 2069 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2070 break; 2071 DELAY(1); 2072 } 2073 if (ntries == 100) { 2074 device_printf(sc->sc_dev, "could not write to RF\n"); 2075 return; 2076 } 2077 2078 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2079 (reg & 0x3); 2080 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2081 2082 /* remember last written value in sc */ 2083 sc->rf_regs[reg] = val; 2084 2085 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2086 } 2087 2088 static void 2089 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2090 { 2091 struct ifnet *ifp = sc->sc_ifp; 2092 struct ieee80211com *ic = ifp->if_l2com; 2093 uint8_t power, tmp; 2094 u_int i, chan; 2095 2096 chan = ieee80211_chan2ieee(ic, c); 2097 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2098 2099 if (IEEE80211_IS_CHAN_2GHZ(c)) 2100 power = min(sc->txpow[chan - 1], 31); 2101 else 2102 power = 31; 2103 2104 /* adjust txpower using ifconfig settings */ 2105 power -= (100 - ic->ic_txpowlimit) / 8; 2106 2107 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2108 2109 switch (sc->rf_rev) { 2110 case RT2560_RF_2522: 2111 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2112 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2113 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2114 break; 2115 2116 case RT2560_RF_2523: 2117 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2118 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2119 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2120 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2121 break; 2122 2123 case RT2560_RF_2524: 2124 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2125 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2126 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2127 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2128 break; 2129 2130 case RT2560_RF_2525: 2131 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2132 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2133 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2134 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2135 2136 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2137 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2138 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2139 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2140 break; 2141 2142 case RT2560_RF_2525E: 2143 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2144 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2145 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2146 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2147 break; 2148 2149 case RT2560_RF_2526: 2150 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2151 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2152 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2153 2154 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2155 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2156 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2157 break; 2158 2159 /* dual-band RF */ 2160 case RT2560_RF_5222: 2161 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2162 2163 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2164 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2165 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2166 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2167 break; 2168 default: 2169 kprintf("unknown ral rev=%d\n", sc->rf_rev); 2170 } 2171 2172 /* XXX */ 2173 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2174 /* set Japan filter bit for channel 14 */ 2175 tmp = rt2560_bbp_read(sc, 70); 2176 2177 tmp &= ~RT2560_JAPAN_FILTER; 2178 if (chan == 14) 2179 tmp |= RT2560_JAPAN_FILTER; 2180 2181 rt2560_bbp_write(sc, 70, tmp); 2182 2183 /* clear CRC errors */ 2184 RAL_READ(sc, RT2560_CNT0); 2185 } 2186 } 2187 2188 static void 2189 rt2560_set_channel(struct ieee80211com *ic) 2190 { 2191 struct ifnet *ifp = ic->ic_ifp; 2192 struct rt2560_softc *sc = ifp->if_softc; 2193 2194 rt2560_set_chan(sc, ic->ic_curchan); 2195 2196 } 2197 2198 #if 0 2199 /* 2200 * Disable RF auto-tuning. 2201 */ 2202 static void 2203 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2204 { 2205 uint32_t tmp; 2206 2207 if (sc->rf_rev != RT2560_RF_2523) { 2208 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2209 rt2560_rf_write(sc, RAL_RF1, tmp); 2210 } 2211 2212 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2213 rt2560_rf_write(sc, RAL_RF3, tmp); 2214 2215 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2216 } 2217 #endif 2218 2219 /* 2220 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2221 * synchronization. 2222 */ 2223 static void 2224 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2225 { 2226 struct ifnet *ifp = sc->sc_ifp; 2227 struct ieee80211com *ic = ifp->if_l2com; 2228 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2229 uint16_t logcwmin, preload; 2230 uint32_t tmp; 2231 2232 /* first, disable TSF synchronization */ 2233 RAL_WRITE(sc, RT2560_CSR14, 0); 2234 2235 tmp = 16 * vap->iv_bss->ni_intval; 2236 RAL_WRITE(sc, RT2560_CSR12, tmp); 2237 2238 RAL_WRITE(sc, RT2560_CSR13, 0); 2239 2240 logcwmin = 5; 2241 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2242 tmp = logcwmin << 16 | preload; 2243 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2244 2245 /* finally, enable TSF synchronization */ 2246 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2247 if (ic->ic_opmode == IEEE80211_M_STA) 2248 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2249 else 2250 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2251 RT2560_ENABLE_BEACON_GENERATOR; 2252 RAL_WRITE(sc, RT2560_CSR14, tmp); 2253 2254 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2255 } 2256 2257 static void 2258 rt2560_enable_tsf(struct rt2560_softc *sc) 2259 { 2260 RAL_WRITE(sc, RT2560_CSR14, 0); 2261 RAL_WRITE(sc, RT2560_CSR14, 2262 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2263 } 2264 2265 static void 2266 rt2560_update_plcp(struct rt2560_softc *sc) 2267 { 2268 struct ifnet *ifp = sc->sc_ifp; 2269 struct ieee80211com *ic = ifp->if_l2com; 2270 2271 /* no short preamble for 1Mbps */ 2272 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2273 2274 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2275 /* values taken from the reference driver */ 2276 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2277 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2278 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2279 } else { 2280 /* same values as above or'ed 0x8 */ 2281 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2282 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2283 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2284 } 2285 2286 DPRINTF(sc, "updating PLCP for %s preamble\n", 2287 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2288 } 2289 2290 /* 2291 * This function can be called by ieee80211_set_shortslottime(). Refer to 2292 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2293 */ 2294 static void 2295 rt2560_update_slot(struct ifnet *ifp) 2296 { 2297 struct rt2560_softc *sc = ifp->if_softc; 2298 struct ieee80211com *ic = ifp->if_l2com; 2299 uint8_t slottime; 2300 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2301 uint32_t tmp; 2302 2303 #ifndef FORCE_SLOTTIME 2304 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2305 #else 2306 /* 2307 * Setting slot time according to "short slot time" capability 2308 * in beacon/probe_resp seems to cause problem to acknowledge 2309 * certain AP's data frames transimitted at CCK/DS rates: the 2310 * problematic AP keeps retransmitting data frames, probably 2311 * because MAC level acks are not received by hardware. 2312 * So we cheat a little bit here by claiming we are capable of 2313 * "short slot time" but setting hardware slot time to the normal 2314 * slot time. ral(4) does not seem to have trouble to receive 2315 * frames transmitted using short slot time even if hardware 2316 * slot time is set to normal slot time. If we didn't use this 2317 * trick, we would have to claim that short slot time is not 2318 * supported; this would give relative poor RX performance 2319 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2320 * slot time. 2321 */ 2322 slottime = 20; 2323 #endif 2324 2325 /* update the MAC slot boundaries */ 2326 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2327 tx_pifs = tx_sifs + slottime; 2328 tx_difs = tx_sifs + 2 * slottime; 2329 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2330 2331 tmp = RAL_READ(sc, RT2560_CSR11); 2332 tmp = (tmp & ~0x1f00) | slottime << 8; 2333 RAL_WRITE(sc, RT2560_CSR11, tmp); 2334 2335 tmp = tx_pifs << 16 | tx_sifs; 2336 RAL_WRITE(sc, RT2560_CSR18, tmp); 2337 2338 tmp = eifs << 16 | tx_difs; 2339 RAL_WRITE(sc, RT2560_CSR19, tmp); 2340 2341 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2342 } 2343 2344 static void 2345 rt2560_set_basicrates(struct rt2560_softc *sc) 2346 { 2347 struct ifnet *ifp = sc->sc_ifp; 2348 struct ieee80211com *ic = ifp->if_l2com; 2349 2350 /* update basic rate set */ 2351 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2352 /* 11b basic rates: 1, 2Mbps */ 2353 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2354 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2355 /* 11a basic rates: 6, 12, 24Mbps */ 2356 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2357 } else { 2358 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2359 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2360 } 2361 } 2362 2363 static void 2364 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2365 { 2366 uint32_t tmp; 2367 2368 /* set ON period to 70ms and OFF period to 30ms */ 2369 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2370 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2371 } 2372 2373 static void 2374 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2375 { 2376 uint32_t tmp; 2377 char ethstr[ETHER_ADDRSTRLEN + 1]; 2378 2379 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2380 RAL_WRITE(sc, RT2560_CSR5, tmp); 2381 2382 tmp = bssid[4] | bssid[5] << 8; 2383 RAL_WRITE(sc, RT2560_CSR6, tmp); 2384 2385 DPRINTF(sc, "setting BSSID to %s\n", kether_ntoa(bssid, ethstr)); 2386 } 2387 2388 static void 2389 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2390 { 2391 uint32_t tmp; 2392 char ethstr[ETHER_ADDRSTRLEN + 1]; 2393 2394 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2395 RAL_WRITE(sc, RT2560_CSR3, tmp); 2396 2397 tmp = addr[4] | addr[5] << 8; 2398 RAL_WRITE(sc, RT2560_CSR4, tmp); 2399 2400 DPRINTF(sc, "setting MAC address to %s\n", kether_ntoa(addr, ethstr)); 2401 } 2402 2403 static void 2404 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2405 { 2406 uint32_t tmp; 2407 2408 tmp = RAL_READ(sc, RT2560_CSR3); 2409 addr[0] = tmp & 0xff; 2410 addr[1] = (tmp >> 8) & 0xff; 2411 addr[2] = (tmp >> 16) & 0xff; 2412 addr[3] = (tmp >> 24); 2413 2414 tmp = RAL_READ(sc, RT2560_CSR4); 2415 addr[4] = tmp & 0xff; 2416 addr[5] = (tmp >> 8) & 0xff; 2417 } 2418 2419 static void 2420 rt2560_update_promisc(struct ifnet *ifp) 2421 { 2422 struct rt2560_softc *sc = ifp->if_softc; 2423 uint32_t tmp; 2424 2425 tmp = RAL_READ(sc, RT2560_RXCSR0); 2426 2427 tmp &= ~RT2560_DROP_NOT_TO_ME; 2428 if (!(ifp->if_flags & IFF_PROMISC)) 2429 tmp |= RT2560_DROP_NOT_TO_ME; 2430 2431 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2432 2433 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2434 "entering" : "leaving"); 2435 } 2436 2437 static const char * 2438 rt2560_get_rf(int rev) 2439 { 2440 switch (rev) { 2441 case RT2560_RF_2522: return "RT2522"; 2442 case RT2560_RF_2523: return "RT2523"; 2443 case RT2560_RF_2524: return "RT2524"; 2444 case RT2560_RF_2525: return "RT2525"; 2445 case RT2560_RF_2525E: return "RT2525e"; 2446 case RT2560_RF_2526: return "RT2526"; 2447 case RT2560_RF_5222: return "RT5222"; 2448 default: return "unknown"; 2449 } 2450 } 2451 2452 static void 2453 rt2560_read_config(struct rt2560_softc *sc) 2454 { 2455 uint16_t val; 2456 int i; 2457 2458 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2459 sc->rf_rev = (val >> 11) & 0x7; 2460 sc->hw_radio = (val >> 10) & 0x1; 2461 sc->led_mode = (val >> 6) & 0x7; 2462 sc->rx_ant = (val >> 4) & 0x3; 2463 sc->tx_ant = (val >> 2) & 0x3; 2464 sc->nb_ant = val & 0x3; 2465 2466 /* read default values for BBP registers */ 2467 for (i = 0; i < 16; i++) { 2468 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2469 if (val == 0 || val == 0xffff) 2470 continue; 2471 2472 sc->bbp_prom[i].reg = val >> 8; 2473 sc->bbp_prom[i].val = val & 0xff; 2474 } 2475 2476 /* read Tx power for all b/g channels */ 2477 for (i = 0; i < 14 / 2; i++) { 2478 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2479 sc->txpow[i * 2] = val & 0xff; 2480 sc->txpow[i * 2 + 1] = val >> 8; 2481 } 2482 for (i = 0; i < 14; ++i) { 2483 if (sc->txpow[i] > 31) 2484 sc->txpow[i] = 24; 2485 } 2486 2487 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2488 if ((val & 0xff) == 0xff) 2489 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2490 else 2491 sc->rssi_corr = val & 0xff; 2492 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2493 sc->rssi_corr, val); 2494 } 2495 2496 2497 static void 2498 rt2560_scan_start(struct ieee80211com *ic) 2499 { 2500 struct ifnet *ifp = ic->ic_ifp; 2501 struct rt2560_softc *sc = ifp->if_softc; 2502 2503 /* abort TSF synchronization */ 2504 RAL_WRITE(sc, RT2560_CSR14, 0); 2505 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2506 } 2507 2508 static void 2509 rt2560_scan_end(struct ieee80211com *ic) 2510 { 2511 struct ifnet *ifp = ic->ic_ifp; 2512 struct rt2560_softc *sc = ifp->if_softc; 2513 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2514 2515 rt2560_enable_tsf_sync(sc); 2516 /* XXX keep local copy */ 2517 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2518 } 2519 2520 static int 2521 rt2560_bbp_init(struct rt2560_softc *sc) 2522 { 2523 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2524 int i, ntries; 2525 2526 /* wait for BBP to be ready */ 2527 for (ntries = 0; ntries < 100; ntries++) { 2528 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2529 break; 2530 DELAY(1); 2531 } 2532 if (ntries == 100) { 2533 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2534 return EIO; 2535 } 2536 2537 /* initialize BBP registers to default values */ 2538 for (i = 0; i < N(rt2560_def_bbp); i++) { 2539 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2540 rt2560_def_bbp[i].val); 2541 } 2542 2543 /* initialize BBP registers to values stored in EEPROM */ 2544 for (i = 0; i < 16; i++) { 2545 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2546 break; 2547 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2548 } 2549 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2550 2551 return 0; 2552 #undef N 2553 } 2554 2555 static void 2556 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2557 { 2558 uint32_t tmp; 2559 uint8_t tx; 2560 2561 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2562 if (antenna == 1) 2563 tx |= RT2560_BBP_ANTA; 2564 else if (antenna == 2) 2565 tx |= RT2560_BBP_ANTB; 2566 else 2567 tx |= RT2560_BBP_DIVERSITY; 2568 2569 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2570 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2571 sc->rf_rev == RT2560_RF_5222) 2572 tx |= RT2560_BBP_FLIPIQ; 2573 2574 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2575 2576 /* update values for CCK and OFDM in BBPCSR1 */ 2577 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2578 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2579 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2580 } 2581 2582 static void 2583 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2584 { 2585 uint8_t rx; 2586 2587 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2588 if (antenna == 1) 2589 rx |= RT2560_BBP_ANTA; 2590 else if (antenna == 2) 2591 rx |= RT2560_BBP_ANTB; 2592 else 2593 rx |= RT2560_BBP_DIVERSITY; 2594 2595 /* need to force no I/Q flip for RF 2525e and 2526 */ 2596 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2597 rx &= ~RT2560_BBP_FLIPIQ; 2598 2599 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2600 } 2601 2602 static void 2603 rt2560_init_locked(struct rt2560_softc *sc) 2604 { 2605 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2606 struct ifnet *ifp = sc->sc_ifp; 2607 struct ieee80211com *ic = ifp->if_l2com; 2608 uint32_t tmp; 2609 int i; 2610 2611 rt2560_stop_locked(sc); 2612 2613 /* setup tx rings */ 2614 tmp = RT2560_PRIO_RING_COUNT << 24 | 2615 RT2560_ATIM_RING_COUNT << 16 | 2616 RT2560_TX_RING_COUNT << 8 | 2617 RT2560_TX_DESC_SIZE; 2618 2619 /* rings must be initialized in this exact order */ 2620 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2621 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2622 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2623 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2624 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2625 2626 /* setup rx ring */ 2627 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2628 2629 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2630 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2631 2632 /* initialize MAC registers to default values */ 2633 for (i = 0; i < N(rt2560_def_mac); i++) 2634 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2635 2636 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2637 2638 /* set basic rate set (will be updated later) */ 2639 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2640 2641 rt2560_update_slot(ifp); 2642 rt2560_update_plcp(sc); 2643 rt2560_update_led(sc, 0, 0); 2644 2645 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2646 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2647 2648 if (rt2560_bbp_init(sc) != 0) { 2649 rt2560_stop(sc); 2650 return; 2651 } 2652 2653 rt2560_set_txantenna(sc, sc->tx_ant); 2654 rt2560_set_rxantenna(sc, sc->rx_ant); 2655 2656 /* set default BSS channel */ 2657 rt2560_set_chan(sc, ic->ic_curchan); 2658 2659 /* kick Rx */ 2660 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2661 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2662 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2663 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2664 ic->ic_opmode != IEEE80211_M_MBSS) 2665 tmp |= RT2560_DROP_TODS; 2666 if (!(ifp->if_flags & IFF_PROMISC)) 2667 tmp |= RT2560_DROP_NOT_TO_ME; 2668 } 2669 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2670 2671 /* clear old FCS and Rx FIFO errors */ 2672 RAL_READ(sc, RT2560_CNT0); 2673 RAL_READ(sc, RT2560_CNT4); 2674 2675 /* clear any pending interrupts */ 2676 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2677 2678 /* enable interrupts */ 2679 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2680 2681 ifq_clr_oactive(&ifp->if_snd); 2682 ifp->if_flags |= IFF_RUNNING; 2683 2684 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 2685 #undef N 2686 } 2687 2688 static void 2689 rt2560_init(void *priv) 2690 { 2691 struct rt2560_softc *sc = priv; 2692 struct ifnet *ifp = sc->sc_ifp; 2693 struct ieee80211com *ic = ifp->if_l2com; 2694 2695 rt2560_init_locked(sc); 2696 2697 if (ifp->if_flags & IFF_RUNNING) 2698 ieee80211_start_all(ic); /* start all vap's */ 2699 } 2700 2701 static void 2702 rt2560_stop_locked(struct rt2560_softc *sc) 2703 { 2704 struct ifnet *ifp = sc->sc_ifp; 2705 volatile int *flags = &sc->sc_flags; 2706 2707 while (*flags & RT2560_F_INPUT_RUNNING) 2708 zsleep(sc, &wlan_global_serializer, 0, "ralrunning", hz/10); 2709 2710 callout_stop(&sc->watchdog_ch); 2711 sc->sc_tx_timer = 0; 2712 2713 if (ifp->if_flags & IFF_RUNNING) { 2714 ifp->if_flags &= ~IFF_RUNNING; 2715 ifq_clr_oactive(&ifp->if_snd); 2716 2717 /* abort Tx */ 2718 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2719 2720 /* disable Rx */ 2721 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2722 2723 /* reset ASIC (imply reset BBP) */ 2724 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2725 RAL_WRITE(sc, RT2560_CSR1, 0); 2726 2727 /* disable interrupts */ 2728 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2729 2730 /* reset Tx and Rx rings */ 2731 rt2560_reset_tx_ring(sc, &sc->txq); 2732 rt2560_reset_tx_ring(sc, &sc->atimq); 2733 rt2560_reset_tx_ring(sc, &sc->prioq); 2734 rt2560_reset_tx_ring(sc, &sc->bcnq); 2735 rt2560_reset_rx_ring(sc, &sc->rxq); 2736 } 2737 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2738 } 2739 2740 void 2741 rt2560_stop(void *arg) 2742 { 2743 struct rt2560_softc *sc = arg; 2744 2745 rt2560_stop_locked(sc); 2746 } 2747 2748 static int 2749 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2750 const struct ieee80211_bpf_params *params) 2751 { 2752 struct ieee80211com *ic = ni->ni_ic; 2753 struct ifnet *ifp = ic->ic_ifp; 2754 struct rt2560_softc *sc = ifp->if_softc; 2755 2756 /* prevent management frames from being sent if we're not ready */ 2757 if (!(ifp->if_flags & IFF_RUNNING)) { 2758 m_freem(m); 2759 ieee80211_free_node(ni); 2760 return ENETDOWN; 2761 } 2762 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2763 ifq_set_oactive(&ifp->if_snd); 2764 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2765 m_freem(m); 2766 ieee80211_free_node(ni); 2767 return ENOBUFS; /* XXX */ 2768 } 2769 2770 IFNET_STAT_INC(ifp, opackets, 1); 2771 2772 if (params == NULL) { 2773 /* 2774 * Legacy path; interpret frame contents to decide 2775 * precisely how to send the frame. 2776 */ 2777 if (rt2560_tx_mgt(sc, m, ni) != 0) 2778 goto bad; 2779 } else { 2780 /* 2781 * Caller supplied explicit parameters to use in 2782 * sending the frame. 2783 */ 2784 if (rt2560_tx_raw(sc, m, ni, params)) 2785 goto bad; 2786 } 2787 sc->sc_tx_timer = 5; 2788 2789 return 0; 2790 bad: 2791 IFNET_STAT_INC(ifp, oerrors, 1); 2792 ieee80211_free_node(ni); 2793 return EIO; /* XXX */ 2794 } 2795