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 * $DragonFly$ 21 */ 22 23 24 /*- 25 * Ralink Technology RT2560 chipset driver 26 * http://www.ralinktech.com/ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/sysctl.h> 31 #include <sys/sockio.h> 32 #include <sys/mbuf.h> 33 #include <sys/kernel.h> 34 #include <sys/socket.h> 35 #include <sys/systm.h> 36 #include <sys/malloc.h> 37 #include <sys/lock.h> 38 #include <sys/mutex.h> 39 #include <sys/module.h> 40 #include <sys/bus.h> 41 #include <sys/endian.h> 42 #include <sys/rman.h> 43 44 #include <net/bpf.h> 45 #include <net/if.h> 46 #include <net/if_arp.h> 47 #include <net/ethernet.h> 48 #include <net/if_dl.h> 49 #include <net/if_media.h> 50 #include <net/if_types.h> 51 #include <net/ifq_var.h> 52 53 #include <netproto/802_11/ieee80211_var.h> 54 #include <netproto/802_11/ieee80211_radiotap.h> 55 #include <netproto/802_11/ieee80211_regdomain.h> 56 #include <netproto/802_11/ieee80211_ratectl.h> 57 58 #include <netinet/in.h> 59 #include <netinet/in_systm.h> 60 #include <netinet/in_var.h> 61 #include <netinet/ip.h> 62 #include <netinet/if_ether.h> 63 64 #include <dev/netif/ral/rt2560reg.h> 65 #include <dev/netif/ral/rt2560var.h> 66 67 #define RT2560_RSSI(sc, rssi) \ 68 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 69 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 70 71 #define RAL_DEBUG 72 #ifdef RAL_DEBUG 73 #define DPRINTF(sc, fmt, ...) do { \ 74 if (sc->sc_debug > 0) \ 75 kprintf(fmt, __VA_ARGS__); \ 76 } while (0) 77 #define DPRINTFN(sc, n, fmt, ...) do { \ 78 if (sc->sc_debug >= (n)) \ 79 kprintf(fmt, __VA_ARGS__); \ 80 } while (0) 81 #else 82 #define DPRINTF(sc, fmt, ...) 83 #define DPRINTFN(sc, n, fmt, ...) 84 #endif 85 86 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 87 const char name[IFNAMSIZ], int unit, int 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 *); 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 ifq_set_ready(&ifp->if_snd); 270 271 ic->ic_ifp = ifp; 272 ic->ic_opmode = IEEE80211_M_STA; 273 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 274 275 /* set device capabilities */ 276 ic->ic_caps = 277 IEEE80211_C_STA /* station mode */ 278 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 279 | IEEE80211_C_HOSTAP /* hostap mode */ 280 | IEEE80211_C_MONITOR /* monitor mode */ 281 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 282 | IEEE80211_C_WDS /* 4-address traffic works */ 283 | IEEE80211_C_MBSS /* mesh point link mode */ 284 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 285 | IEEE80211_C_SHSLOT /* short slot time supported */ 286 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 287 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 288 #ifdef notyet 289 | IEEE80211_C_TXFRAG /* handle tx frags */ 290 #endif 291 ; 292 293 bands = 0; 294 setbit(&bands, IEEE80211_MODE_11B); 295 setbit(&bands, IEEE80211_MODE_11G); 296 if (sc->rf_rev == RT2560_RF_5222) 297 setbit(&bands, IEEE80211_MODE_11A); 298 ieee80211_init_channels(ic, NULL, &bands); 299 300 ieee80211_ifattach(ic, macaddr); 301 ic->ic_raw_xmit = rt2560_raw_xmit; 302 ic->ic_updateslot = rt2560_update_slot; 303 ic->ic_update_promisc = rt2560_update_promisc; 304 ic->ic_scan_start = rt2560_scan_start; 305 ic->ic_scan_end = rt2560_scan_end; 306 ic->ic_set_channel = rt2560_set_channel; 307 308 ic->ic_vap_create = rt2560_vap_create; 309 ic->ic_vap_delete = rt2560_vap_delete; 310 311 ieee80211_radiotap_attach(ic, 312 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 313 RT2560_TX_RADIOTAP_PRESENT, 314 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 315 RT2560_RX_RADIOTAP_PRESENT); 316 317 /* 318 * Add a few sysctl knobs. 319 */ 320 ctx = &sc->sc_sysctl_ctx; 321 sysctl_ctx_init(ctx); 322 tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), 323 OID_AUTO, 324 device_get_nameunit(sc->sc_dev), 325 CTLFLAG_RD, 0, ""); 326 if (tree == NULL) { 327 device_printf(sc->sc_dev, "can't add sysctl node\n"); 328 goto fail6; 329 } 330 331 #ifdef RAL_DEBUG 332 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 333 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 334 #endif 335 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 336 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 337 338 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 339 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 340 341 if (bootverbose) 342 ieee80211_announce(ic); 343 344 return 0; 345 346 fail6: rt2560_free_rx_ring(sc, &sc->rxq); 347 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 348 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 349 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 350 fail2: rt2560_free_tx_ring(sc, &sc->txq); 351 fail1: 352 353 return ENXIO; 354 } 355 356 int 357 rt2560_detach(void *xsc) 358 { 359 struct rt2560_softc *sc = xsc; 360 struct ifnet *ifp = sc->sc_ifp; 361 struct ieee80211com *ic = ifp->if_l2com; 362 363 rt2560_stop(sc); 364 365 ieee80211_ifdetach(ic); 366 367 rt2560_free_tx_ring(sc, &sc->txq); 368 rt2560_free_tx_ring(sc, &sc->atimq); 369 rt2560_free_tx_ring(sc, &sc->prioq); 370 rt2560_free_tx_ring(sc, &sc->bcnq); 371 rt2560_free_rx_ring(sc, &sc->rxq); 372 373 if_free(ifp); 374 375 return 0; 376 } 377 378 static struct ieee80211vap * 379 rt2560_vap_create(struct ieee80211com *ic, 380 const char name[IFNAMSIZ], int unit, int 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 *) kmalloc(sizeof(struct rt2560_vap), 421 M_80211_VAP, M_INTWAIT | 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 kfree(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(ring->desc_dmat, 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, &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 = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 507 M_INTWAIT | 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(ring->data_dmat, 1, 0, 515 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 516 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, &ring->data_dmat); 517 if (error != 0) { 518 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 519 goto fail; 520 } 521 522 for (i = 0; i < count; i++) { 523 error = bus_dmamap_create(ring->data_dmat, 0, 524 &ring->data[i].map); 525 if (error != 0) { 526 device_printf(sc->sc_dev, "could not create DMA map\n"); 527 goto fail; 528 } 529 } 530 531 return 0; 532 533 fail: rt2560_free_tx_ring(sc, ring); 534 return error; 535 } 536 537 static void 538 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 539 { 540 struct rt2560_tx_desc *desc; 541 struct rt2560_tx_data *data; 542 int i; 543 544 for (i = 0; i < ring->count; i++) { 545 desc = &ring->desc[i]; 546 data = &ring->data[i]; 547 548 if (data->m != NULL) { 549 bus_dmamap_sync(ring->data_dmat, data->map, 550 BUS_DMASYNC_POSTWRITE); 551 bus_dmamap_unload(ring->data_dmat, data->map); 552 m_freem(data->m); 553 data->m = NULL; 554 } 555 556 if (data->ni != NULL) { 557 ieee80211_free_node(data->ni); 558 data->ni = NULL; 559 } 560 561 desc->flags = 0; 562 } 563 564 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 565 566 ring->queued = 0; 567 ring->cur = ring->next = 0; 568 ring->cur_encrypt = ring->next_encrypt = 0; 569 } 570 571 static void 572 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 573 { 574 struct rt2560_tx_data *data; 575 int i; 576 577 if (ring->desc != NULL) { 578 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 579 BUS_DMASYNC_POSTWRITE); 580 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 581 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 582 } 583 584 if (ring->desc_dmat != NULL) 585 bus_dma_tag_destroy(ring->desc_dmat); 586 587 if (ring->data != NULL) { 588 for (i = 0; i < ring->count; i++) { 589 data = &ring->data[i]; 590 591 if (data->m != NULL) { 592 bus_dmamap_sync(ring->data_dmat, data->map, 593 BUS_DMASYNC_POSTWRITE); 594 bus_dmamap_unload(ring->data_dmat, data->map); 595 m_freem(data->m); 596 } 597 598 if (data->ni != NULL) 599 ieee80211_free_node(data->ni); 600 601 if (data->map != NULL) 602 bus_dmamap_destroy(ring->data_dmat, data->map); 603 } 604 605 kfree(ring->data, M_DEVBUF); 606 } 607 608 if (ring->data_dmat != NULL) 609 bus_dma_tag_destroy(ring->data_dmat); 610 } 611 612 static int 613 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 614 int count) 615 { 616 struct rt2560_rx_desc *desc; 617 struct rt2560_rx_data *data; 618 bus_addr_t physaddr; 619 int i, error; 620 621 ring->count = count; 622 ring->cur = ring->next = 0; 623 ring->cur_decrypt = 0; 624 625 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 626 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 627 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 628 0, &ring->desc_dmat); 629 if (error != 0) { 630 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 631 goto fail; 632 } 633 634 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 635 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 636 if (error != 0) { 637 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 638 goto fail; 639 } 640 641 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 642 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 643 0); 644 if (error != 0) { 645 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 646 goto fail; 647 } 648 649 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 650 M_INTWAIT | M_ZERO); 651 if (ring->data == NULL) { 652 device_printf(sc->sc_dev, "could not allocate soft data\n"); 653 error = ENOMEM; 654 goto fail; 655 } 656 657 /* 658 * Pre-allocate Rx buffers and populate Rx ring. 659 */ 660 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 661 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 662 1, MCLBYTES, 0, &ring->data_dmat); 663 if (error != 0) { 664 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 665 goto fail; 666 } 667 668 for (i = 0; i < count; i++) { 669 desc = &sc->rxq.desc[i]; 670 data = &sc->rxq.data[i]; 671 672 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 673 if (error != 0) { 674 device_printf(sc->sc_dev, "could not create DMA map\n"); 675 goto fail; 676 } 677 678 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 679 if (data->m == NULL) { 680 device_printf(sc->sc_dev, 681 "could not allocate rx mbuf\n"); 682 error = ENOMEM; 683 goto fail; 684 } 685 686 error = bus_dmamap_load(ring->data_dmat, data->map, 687 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 688 &physaddr, 0); 689 if (error != 0) { 690 device_printf(sc->sc_dev, 691 "could not load rx buf DMA map"); 692 goto fail; 693 } 694 695 desc->flags = htole32(RT2560_RX_BUSY); 696 desc->physaddr = htole32(physaddr); 697 } 698 699 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 700 701 return 0; 702 703 fail: rt2560_free_rx_ring(sc, ring); 704 return error; 705 } 706 707 static void 708 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 709 { 710 int i; 711 712 for (i = 0; i < ring->count; i++) { 713 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 714 ring->data[i].drop = 0; 715 } 716 717 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 718 719 ring->cur = ring->next = 0; 720 ring->cur_decrypt = 0; 721 } 722 723 static void 724 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 725 { 726 struct rt2560_rx_data *data; 727 int i; 728 729 if (ring->desc != NULL) { 730 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 731 BUS_DMASYNC_POSTWRITE); 732 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 733 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 734 } 735 736 if (ring->desc_dmat != NULL) 737 bus_dma_tag_destroy(ring->desc_dmat); 738 739 if (ring->data != NULL) { 740 for (i = 0; i < ring->count; i++) { 741 data = &ring->data[i]; 742 743 if (data->m != NULL) { 744 bus_dmamap_sync(ring->data_dmat, data->map, 745 BUS_DMASYNC_POSTREAD); 746 bus_dmamap_unload(ring->data_dmat, data->map); 747 m_freem(data->m); 748 } 749 750 if (data->map != NULL) 751 bus_dmamap_destroy(ring->data_dmat, data->map); 752 } 753 754 kfree(ring->data, M_DEVBUF); 755 } 756 757 if (ring->data_dmat != NULL) 758 bus_dma_tag_destroy(ring->data_dmat); 759 } 760 761 static int 762 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 763 { 764 struct rt2560_vap *rvp = RT2560_VAP(vap); 765 struct ifnet *ifp = vap->iv_ic->ic_ifp; 766 struct rt2560_softc *sc = ifp->if_softc; 767 int error; 768 769 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 770 /* abort TSF synchronization */ 771 RAL_WRITE(sc, RT2560_CSR14, 0); 772 773 /* turn association led off */ 774 rt2560_update_led(sc, 0, 0); 775 } 776 777 error = rvp->ral_newstate(vap, nstate, arg); 778 779 if (error == 0 && nstate == IEEE80211_S_RUN) { 780 struct ieee80211_node *ni = vap->iv_bss; 781 struct mbuf *m; 782 783 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 784 rt2560_update_plcp(sc); 785 rt2560_set_basicrates(sc); 786 rt2560_set_bssid(sc, ni->ni_bssid); 787 } 788 789 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 790 vap->iv_opmode == IEEE80211_M_IBSS || 791 vap->iv_opmode == IEEE80211_M_MBSS) { 792 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 793 if (m == NULL) { 794 if_printf(ifp, "could not allocate beacon\n"); 795 return ENOBUFS; 796 } 797 ieee80211_ref_node(ni); 798 error = rt2560_tx_bcn(sc, m, ni); 799 if (error != 0) 800 return error; 801 } 802 803 /* turn assocation led on */ 804 rt2560_update_led(sc, 1, 0); 805 806 if (vap->iv_opmode != IEEE80211_M_MONITOR) 807 rt2560_enable_tsf_sync(sc); 808 else 809 rt2560_enable_tsf(sc); 810 } 811 return error; 812 } 813 814 /* 815 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 816 * 93C66). 817 */ 818 static uint16_t 819 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 820 { 821 uint32_t tmp; 822 uint16_t val; 823 int n; 824 825 /* clock C once before the first command */ 826 RT2560_EEPROM_CTL(sc, 0); 827 828 RT2560_EEPROM_CTL(sc, RT2560_S); 829 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 830 RT2560_EEPROM_CTL(sc, RT2560_S); 831 832 /* write start bit (1) */ 833 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 835 836 /* write READ opcode (10) */ 837 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 839 RT2560_EEPROM_CTL(sc, RT2560_S); 840 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 841 842 /* write address (A5-A0 or A7-A0) */ 843 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 844 for (; n >= 0; n--) { 845 RT2560_EEPROM_CTL(sc, RT2560_S | 846 (((addr >> n) & 1) << RT2560_SHIFT_D)); 847 RT2560_EEPROM_CTL(sc, RT2560_S | 848 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 849 } 850 851 RT2560_EEPROM_CTL(sc, RT2560_S); 852 853 /* read data Q15-Q0 */ 854 val = 0; 855 for (n = 15; n >= 0; n--) { 856 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 857 tmp = RAL_READ(sc, RT2560_CSR21); 858 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 859 RT2560_EEPROM_CTL(sc, RT2560_S); 860 } 861 862 RT2560_EEPROM_CTL(sc, 0); 863 864 /* clear Chip Select and clock C */ 865 RT2560_EEPROM_CTL(sc, RT2560_S); 866 RT2560_EEPROM_CTL(sc, 0); 867 RT2560_EEPROM_CTL(sc, RT2560_C); 868 869 return val; 870 } 871 872 /* 873 * Some frames were processed by the hardware cipher engine and are ready for 874 * transmission. 875 */ 876 static void 877 rt2560_encryption_intr(struct rt2560_softc *sc) 878 { 879 struct rt2560_tx_desc *desc; 880 int hw; 881 882 /* retrieve last descriptor index processed by cipher engine */ 883 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 884 hw /= RT2560_TX_DESC_SIZE; 885 886 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 887 BUS_DMASYNC_POSTREAD); 888 889 while (sc->txq.next_encrypt != hw) { 890 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 891 kprintf("hw encrypt %d, cur_encrypt %d\n", hw, 892 sc->txq.cur_encrypt); 893 break; 894 } 895 896 desc = &sc->txq.desc[sc->txq.next_encrypt]; 897 898 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 899 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 900 break; 901 902 /* for TKIP, swap eiv field to fix a bug in ASIC */ 903 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 904 RT2560_TX_CIPHER_TKIP) 905 desc->eiv = bswap32(desc->eiv); 906 907 /* mark the frame ready for transmission */ 908 desc->flags |= htole32(RT2560_TX_VALID); 909 desc->flags |= htole32(RT2560_TX_BUSY); 910 911 DPRINTFN(sc, 15, "encryption done idx=%u\n", 912 sc->txq.next_encrypt); 913 914 sc->txq.next_encrypt = 915 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 916 } 917 918 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 919 BUS_DMASYNC_PREWRITE); 920 921 /* kick Tx */ 922 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 923 } 924 925 static void 926 rt2560_tx_intr(struct rt2560_softc *sc) 927 { 928 struct ifnet *ifp = sc->sc_ifp; 929 struct rt2560_tx_desc *desc; 930 struct rt2560_tx_data *data; 931 struct mbuf *m; 932 uint32_t flags; 933 int retrycnt; 934 struct ieee80211vap *vap; 935 struct ieee80211_node *ni; 936 937 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 938 BUS_DMASYNC_POSTREAD); 939 940 for (;;) { 941 desc = &sc->txq.desc[sc->txq.next]; 942 data = &sc->txq.data[sc->txq.next]; 943 944 flags = le32toh(desc->flags); 945 if ((flags & RT2560_TX_BUSY) || 946 (flags & RT2560_TX_CIPHER_BUSY) || 947 !(flags & RT2560_TX_VALID)) 948 break; 949 950 m = data->m; 951 ni = data->ni; 952 vap = ni->ni_vap; 953 954 switch (flags & RT2560_TX_RESULT_MASK) { 955 case RT2560_TX_SUCCESS: 956 retrycnt = 0; 957 958 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 959 if (data->rix != IEEE80211_FIXED_RATE_NONE) 960 ieee80211_ratectl_tx_complete(vap, ni, 961 IEEE80211_RATECTL_TX_SUCCESS, 962 &retrycnt, NULL); 963 ifp->if_opackets++; 964 break; 965 966 case RT2560_TX_SUCCESS_RETRY: 967 retrycnt = RT2560_TX_RETRYCNT(flags); 968 969 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 970 retrycnt); 971 if (data->rix != IEEE80211_FIXED_RATE_NONE) 972 ieee80211_ratectl_tx_complete(vap, ni, 973 IEEE80211_RATECTL_TX_SUCCESS, 974 &retrycnt, NULL); 975 ifp->if_opackets++; 976 break; 977 978 case RT2560_TX_FAIL_RETRY: 979 retrycnt = RT2560_TX_RETRYCNT(flags); 980 981 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 982 retrycnt); 983 if (data->rix != IEEE80211_FIXED_RATE_NONE) 984 ieee80211_ratectl_tx_complete(vap, ni, 985 IEEE80211_RATECTL_TX_FAILURE, 986 &retrycnt, NULL); 987 ifp->if_oerrors++; 988 break; 989 990 case RT2560_TX_FAIL_INVALID: 991 case RT2560_TX_FAIL_OTHER: 992 default: 993 device_printf(sc->sc_dev, "sending data frame failed " 994 "0x%08x\n", flags); 995 ifp->if_oerrors++; 996 } 997 998 bus_dmamap_sync(sc->txq.data_dmat, data->map, 999 BUS_DMASYNC_POSTWRITE); 1000 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1001 m_freem(m); 1002 data->m = NULL; 1003 ieee80211_free_node(data->ni); 1004 data->ni = NULL; 1005 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_flags &= ~IFF_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_flags &= ~IFF_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 ifp->if_ierrors++; 1150 goto skip; 1151 } 1152 1153 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1154 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1155 ifp->if_ierrors++; 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(MB_DONTWAIT, MT_DATA, M_PKTHDR); 1167 if (mnew == NULL) { 1168 ifp->if_ierrors++; 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 ifp->if_ierrors++; 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 wh = mtod(m, struct ieee80211_frame *); 1231 ni = ieee80211_find_rxnode(ic, 1232 (struct ieee80211_frame_min *)wh); 1233 if (ni != NULL) { 1234 (void) ieee80211_input(ni, m, rssi, nf); 1235 ieee80211_free_node(ni); 1236 } else 1237 (void) ieee80211_input_all(ic, m, rssi, nf); 1238 1239 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1240 skip: desc->flags = htole32(RT2560_RX_BUSY); 1241 1242 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1243 1244 sc->rxq.cur_decrypt = 1245 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1246 } 1247 1248 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1249 BUS_DMASYNC_PREWRITE); 1250 } 1251 1252 /* 1253 * Some frames were received. Pass them to the hardware cipher engine before 1254 * sending them to the 802.11 layer. 1255 */ 1256 static void 1257 rt2560_rx_intr(struct rt2560_softc *sc) 1258 { 1259 struct rt2560_rx_desc *desc; 1260 struct rt2560_rx_data *data; 1261 1262 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1263 BUS_DMASYNC_POSTREAD); 1264 1265 for (;;) { 1266 desc = &sc->rxq.desc[sc->rxq.cur]; 1267 data = &sc->rxq.data[sc->rxq.cur]; 1268 1269 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1270 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1271 break; 1272 1273 data->drop = 0; 1274 1275 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1276 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1277 /* 1278 * This should not happen since we did not request 1279 * to receive those frames when we filled RXCSR0. 1280 */ 1281 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1282 le32toh(desc->flags)); 1283 data->drop = 1; 1284 } 1285 1286 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1287 DPRINTFN(sc, 5, "%s\n", "bad length"); 1288 data->drop = 1; 1289 } 1290 1291 /* mark the frame for decryption */ 1292 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1293 1294 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1295 1296 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1297 } 1298 1299 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1300 BUS_DMASYNC_PREWRITE); 1301 1302 /* kick decrypt */ 1303 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1304 } 1305 1306 static void 1307 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1308 { 1309 struct rt2560_vap *rvp = RT2560_VAP(vap); 1310 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1311 1312 setbit(bo->bo_flags, item); 1313 } 1314 1315 /* 1316 * This function is called periodically in IBSS mode when a new beacon must be 1317 * sent out. 1318 */ 1319 static void 1320 rt2560_beacon_expire(struct rt2560_softc *sc) 1321 { 1322 struct ifnet *ifp = sc->sc_ifp; 1323 struct ieee80211com *ic = ifp->if_l2com; 1324 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1325 struct rt2560_vap *rvp = RT2560_VAP(vap); 1326 struct rt2560_tx_data *data; 1327 1328 if (ic->ic_opmode != IEEE80211_M_IBSS && 1329 ic->ic_opmode != IEEE80211_M_HOSTAP && 1330 ic->ic_opmode != IEEE80211_M_MBSS) 1331 return; 1332 1333 data = &sc->bcnq.data[sc->bcnq.next]; 1334 /* 1335 * Don't send beacon if bsschan isn't set 1336 */ 1337 if (data->ni == NULL) 1338 return; 1339 1340 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1341 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1342 1343 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1344 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1345 1346 rt2560_tx_bcn(sc, data->m, data->ni); 1347 1348 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1349 1350 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1351 } 1352 1353 /* ARGSUSED */ 1354 static void 1355 rt2560_wakeup_expire(struct rt2560_softc *sc) 1356 { 1357 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1358 } 1359 1360 void 1361 rt2560_intr(void *arg) 1362 { 1363 struct rt2560_softc *sc = arg; 1364 struct ifnet *ifp = sc->sc_ifp; 1365 uint32_t r; 1366 1367 /* disable interrupts */ 1368 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1369 1370 /* don't re-enable interrupts if we're shutting down */ 1371 if (!(ifp->if_flags & IFF_RUNNING)) { 1372 return; 1373 } 1374 1375 r = RAL_READ(sc, RT2560_CSR7); 1376 RAL_WRITE(sc, RT2560_CSR7, r); 1377 1378 if (r & RT2560_BEACON_EXPIRE) 1379 rt2560_beacon_expire(sc); 1380 1381 if (r & RT2560_WAKEUP_EXPIRE) 1382 rt2560_wakeup_expire(sc); 1383 1384 if (r & RT2560_ENCRYPTION_DONE) 1385 rt2560_encryption_intr(sc); 1386 1387 if (r & RT2560_TX_DONE) 1388 rt2560_tx_intr(sc); 1389 1390 if (r & RT2560_PRIO_DONE) 1391 rt2560_prio_intr(sc); 1392 1393 if (r & RT2560_DECRYPTION_DONE) 1394 rt2560_decryption_intr(sc); 1395 1396 if (r & RT2560_RX_DONE) { 1397 rt2560_rx_intr(sc); 1398 rt2560_encryption_intr(sc); 1399 } 1400 1401 /* re-enable interrupts */ 1402 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1403 } 1404 1405 #define RAL_SIFS 10 /* us */ 1406 1407 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1408 1409 static uint8_t 1410 rt2560_plcp_signal(int rate) 1411 { 1412 switch (rate) { 1413 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1414 case 12: return 0xb; 1415 case 18: return 0xf; 1416 case 24: return 0xa; 1417 case 36: return 0xe; 1418 case 48: return 0x9; 1419 case 72: return 0xd; 1420 case 96: return 0x8; 1421 case 108: return 0xc; 1422 1423 /* CCK rates (NB: not IEEE std, device-specific) */ 1424 case 2: return 0x0; 1425 case 4: return 0x1; 1426 case 11: return 0x2; 1427 case 22: return 0x3; 1428 } 1429 return 0xff; /* XXX unsupported/unknown rate */ 1430 } 1431 1432 static void 1433 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1434 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1435 { 1436 struct ifnet *ifp = sc->sc_ifp; 1437 struct ieee80211com *ic = ifp->if_l2com; 1438 uint16_t plcp_length; 1439 int remainder; 1440 1441 desc->flags = htole32(flags); 1442 desc->flags |= htole32(len << 16); 1443 1444 desc->physaddr = htole32(physaddr); 1445 desc->wme = htole16( 1446 RT2560_AIFSN(2) | 1447 RT2560_LOGCWMIN(3) | 1448 RT2560_LOGCWMAX(8)); 1449 1450 /* setup PLCP fields */ 1451 desc->plcp_signal = rt2560_plcp_signal(rate); 1452 desc->plcp_service = 4; 1453 1454 len += IEEE80211_CRC_LEN; 1455 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1456 desc->flags |= htole32(RT2560_TX_OFDM); 1457 1458 plcp_length = len & 0xfff; 1459 desc->plcp_length_hi = plcp_length >> 6; 1460 desc->plcp_length_lo = plcp_length & 0x3f; 1461 } else { 1462 plcp_length = (16 * len + rate - 1) / rate; 1463 if (rate == 22) { 1464 remainder = (16 * len) % 22; 1465 if (remainder != 0 && remainder < 7) 1466 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1467 } 1468 desc->plcp_length_hi = plcp_length >> 8; 1469 desc->plcp_length_lo = plcp_length & 0xff; 1470 1471 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1472 desc->plcp_signal |= 0x08; 1473 } 1474 1475 if (!encrypt) 1476 desc->flags |= htole32(RT2560_TX_VALID); 1477 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1478 : htole32(RT2560_TX_BUSY); 1479 } 1480 1481 static int 1482 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1483 struct ieee80211_node *ni) 1484 { 1485 struct ieee80211vap *vap = ni->ni_vap; 1486 struct rt2560_tx_desc *desc; 1487 struct rt2560_tx_data *data; 1488 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1489 int nsegs, rate, error; 1490 1491 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1492 data = &sc->bcnq.data[sc->bcnq.cur]; 1493 1494 /* XXX maybe a separate beacon rate? */ 1495 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1496 1497 error = bus_dmamap_load_mbuf_segment(sc->bcnq.data_dmat, data->map, m0, 1498 segs, 1, &nsegs, BUS_DMA_NOWAIT); 1499 if (error != 0) { 1500 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1501 error); 1502 m_freem(m0); 1503 return error; 1504 } 1505 1506 if (ieee80211_radiotap_active_vap(vap)) { 1507 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1508 1509 tap->wt_flags = 0; 1510 tap->wt_rate = rate; 1511 tap->wt_antenna = sc->tx_ant; 1512 1513 ieee80211_radiotap_tx(vap, m0); 1514 } 1515 1516 data->m = m0; 1517 data->ni = ni; 1518 1519 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1520 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1521 1522 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1523 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1524 1525 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1526 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1527 BUS_DMASYNC_PREWRITE); 1528 1529 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1530 1531 return 0; 1532 } 1533 1534 static int 1535 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1536 struct ieee80211_node *ni) 1537 { 1538 struct ieee80211vap *vap = ni->ni_vap; 1539 struct ieee80211com *ic = ni->ni_ic; 1540 struct rt2560_tx_desc *desc; 1541 struct rt2560_tx_data *data; 1542 struct ieee80211_frame *wh; 1543 struct ieee80211_key *k; 1544 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1545 uint16_t dur; 1546 uint32_t flags = 0; 1547 int nsegs, rate, error; 1548 1549 desc = &sc->prioq.desc[sc->prioq.cur]; 1550 data = &sc->prioq.data[sc->prioq.cur]; 1551 1552 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1553 1554 wh = mtod(m0, struct ieee80211_frame *); 1555 1556 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1557 k = ieee80211_crypto_encap(ni, m0); 1558 if (k == NULL) { 1559 m_freem(m0); 1560 return ENOBUFS; 1561 } 1562 } 1563 1564 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1565 segs, 1, &nsegs, 0); 1566 if (error != 0) { 1567 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1568 error); 1569 m_freem(m0); 1570 return error; 1571 } 1572 1573 if (ieee80211_radiotap_active_vap(vap)) { 1574 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1575 1576 tap->wt_flags = 0; 1577 tap->wt_rate = rate; 1578 tap->wt_antenna = sc->tx_ant; 1579 1580 ieee80211_radiotap_tx(vap, m0); 1581 } 1582 1583 data->m = m0; 1584 data->ni = ni; 1585 /* management frames are not taken into account for amrr */ 1586 data->rix = IEEE80211_FIXED_RATE_NONE; 1587 1588 wh = mtod(m0, struct ieee80211_frame *); 1589 1590 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1591 flags |= RT2560_TX_ACK; 1592 1593 dur = ieee80211_ack_duration(ic->ic_rt, 1594 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1595 *(uint16_t *)wh->i_dur = htole16(dur); 1596 1597 /* tell hardware to add timestamp for probe responses */ 1598 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1599 IEEE80211_FC0_TYPE_MGT && 1600 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1601 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1602 flags |= RT2560_TX_TIMESTAMP; 1603 } 1604 1605 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1606 segs->ds_addr); 1607 1608 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1609 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1610 BUS_DMASYNC_PREWRITE); 1611 1612 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1613 m0->m_pkthdr.len, sc->prioq.cur, rate); 1614 1615 /* kick prio */ 1616 sc->prioq.queued++; 1617 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1618 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1619 1620 return 0; 1621 } 1622 1623 static int 1624 rt2560_sendprot(struct rt2560_softc *sc, 1625 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1626 { 1627 struct ieee80211com *ic = ni->ni_ic; 1628 const struct ieee80211_frame *wh; 1629 struct rt2560_tx_desc *desc; 1630 struct rt2560_tx_data *data; 1631 struct mbuf *mprot; 1632 int protrate, ackrate, pktlen, flags, isshort, error; 1633 uint16_t dur; 1634 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1635 int nsegs; 1636 1637 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1638 ("protection %d", prot)); 1639 1640 wh = mtod(m, const struct ieee80211_frame *); 1641 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1642 1643 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1644 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1645 1646 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1647 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1648 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1649 flags = RT2560_TX_MORE_FRAG; 1650 if (prot == IEEE80211_PROT_RTSCTS) { 1651 /* NB: CTS is the same size as an ACK */ 1652 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1653 flags |= RT2560_TX_ACK; 1654 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1655 } else { 1656 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1657 } 1658 if (mprot == NULL) { 1659 /* XXX stat + msg */ 1660 return ENOBUFS; 1661 } 1662 1663 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1664 data = &sc->txq.data[sc->txq.cur_encrypt]; 1665 1666 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1667 mprot, segs, 1, &nsegs, 0); 1668 if (error != 0) { 1669 device_printf(sc->sc_dev, 1670 "could not map mbuf (error %d)\n", error); 1671 m_freem(mprot); 1672 return error; 1673 } 1674 1675 data->m = mprot; 1676 data->ni = ieee80211_ref_node(ni); 1677 /* ctl frames are not taken into account for amrr */ 1678 data->rix = IEEE80211_FIXED_RATE_NONE; 1679 1680 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1681 segs->ds_addr); 1682 1683 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1684 BUS_DMASYNC_PREWRITE); 1685 1686 sc->txq.queued++; 1687 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1688 1689 return 0; 1690 } 1691 1692 static int 1693 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1694 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1695 { 1696 struct ieee80211vap *vap = ni->ni_vap; 1697 struct ieee80211com *ic = ni->ni_ic; 1698 struct rt2560_tx_desc *desc; 1699 struct rt2560_tx_data *data; 1700 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1701 uint32_t flags; 1702 int nsegs, rate, error; 1703 1704 desc = &sc->prioq.desc[sc->prioq.cur]; 1705 data = &sc->prioq.data[sc->prioq.cur]; 1706 1707 rate = params->ibp_rate0; 1708 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1709 /* XXX fall back to mcast/mgmt rate? */ 1710 m_freem(m0); 1711 return EINVAL; 1712 } 1713 1714 flags = 0; 1715 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1716 flags |= RT2560_TX_ACK; 1717 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1718 error = rt2560_sendprot(sc, m0, ni, 1719 params->ibp_flags & IEEE80211_BPF_RTS ? 1720 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1721 rate); 1722 if (error) { 1723 m_freem(m0); 1724 return error; 1725 } 1726 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1727 } 1728 1729 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1730 segs, 1, &nsegs, 0); 1731 if (error != 0) { 1732 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1733 error); 1734 m_freem(m0); 1735 return error; 1736 } 1737 1738 if (ieee80211_radiotap_active_vap(vap)) { 1739 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1740 1741 tap->wt_flags = 0; 1742 tap->wt_rate = rate; 1743 tap->wt_antenna = sc->tx_ant; 1744 1745 ieee80211_radiotap_tx(ni->ni_vap, m0); 1746 } 1747 1748 data->m = m0; 1749 data->ni = ni; 1750 1751 /* XXX need to setup descriptor ourself */ 1752 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1753 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1754 segs->ds_addr); 1755 1756 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1757 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1758 BUS_DMASYNC_PREWRITE); 1759 1760 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1761 m0->m_pkthdr.len, sc->prioq.cur, rate); 1762 1763 /* kick prio */ 1764 sc->prioq.queued++; 1765 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1766 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1767 1768 return 0; 1769 } 1770 1771 static int 1772 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1773 struct ieee80211_node *ni) 1774 { 1775 struct ieee80211vap *vap = ni->ni_vap; 1776 struct ieee80211com *ic = ni->ni_ic; 1777 struct rt2560_tx_desc *desc; 1778 struct rt2560_tx_data *data; 1779 struct ieee80211_frame *wh; 1780 const struct ieee80211_txparam *tp; 1781 struct ieee80211_key *k; 1782 struct mbuf *mnew; 1783 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1784 uint16_t dur; 1785 uint32_t flags; 1786 int nsegs, rate, error; 1787 1788 wh = mtod(m0, struct ieee80211_frame *); 1789 1790 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1791 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1792 rate = tp->mcastrate; 1793 } else if (m0->m_flags & M_EAPOL) { 1794 rate = tp->mgmtrate; 1795 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1796 rate = tp->ucastrate; 1797 } else { 1798 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1799 rate = ni->ni_txrate; 1800 } 1801 1802 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1803 k = ieee80211_crypto_encap(ni, m0); 1804 if (k == NULL) { 1805 m_freem(m0); 1806 return ENOBUFS; 1807 } 1808 1809 /* packet header may have moved, reset our local pointer */ 1810 wh = mtod(m0, struct ieee80211_frame *); 1811 } 1812 1813 flags = 0; 1814 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1815 int prot = IEEE80211_PROT_NONE; 1816 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1817 prot = IEEE80211_PROT_RTSCTS; 1818 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1819 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1820 prot = ic->ic_protmode; 1821 if (prot != IEEE80211_PROT_NONE) { 1822 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1823 if (error) { 1824 m_freem(m0); 1825 return error; 1826 } 1827 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1828 } 1829 } 1830 1831 data = &sc->txq.data[sc->txq.cur_encrypt]; 1832 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1833 1834 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, m0, 1835 segs, 1, &nsegs, 0); 1836 if (error != 0 && error != EFBIG) { 1837 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1838 error); 1839 m_freem(m0); 1840 return error; 1841 } 1842 if (error != 0) { 1843 mnew = m_defrag(m0, MB_DONTWAIT); 1844 if (mnew == NULL) { 1845 device_printf(sc->sc_dev, 1846 "could not defragment mbuf\n"); 1847 m_freem(m0); 1848 return ENOBUFS; 1849 } 1850 m0 = mnew; 1851 1852 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1853 m0, segs, 1, &nsegs, 0); 1854 if (error != 0) { 1855 device_printf(sc->sc_dev, 1856 "could not map mbuf (error %d)\n", error); 1857 m_freem(m0); 1858 return error; 1859 } 1860 1861 /* packet header may have moved, reset our local pointer */ 1862 wh = mtod(m0, struct ieee80211_frame *); 1863 } 1864 1865 if (ieee80211_radiotap_active_vap(vap)) { 1866 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1867 1868 tap->wt_flags = 0; 1869 tap->wt_rate = rate; 1870 tap->wt_antenna = sc->tx_ant; 1871 1872 ieee80211_radiotap_tx(vap, m0); 1873 } 1874 1875 data->m = m0; 1876 data->ni = ni; 1877 1878 /* remember link conditions for rate adaptation algorithm */ 1879 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1880 data->rix = ni->ni_txrate; 1881 /* XXX probably need last rssi value and not avg */ 1882 data->rssi = ic->ic_node_getrssi(ni); 1883 } else 1884 data->rix = IEEE80211_FIXED_RATE_NONE; 1885 1886 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1887 flags |= RT2560_TX_ACK; 1888 1889 dur = ieee80211_ack_duration(ic->ic_rt, 1890 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1891 *(uint16_t *)wh->i_dur = htole16(dur); 1892 } 1893 1894 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1895 segs->ds_addr); 1896 1897 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1898 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1899 BUS_DMASYNC_PREWRITE); 1900 1901 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1902 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1903 1904 /* kick encrypt */ 1905 sc->txq.queued++; 1906 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1907 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1908 1909 return 0; 1910 } 1911 1912 static void 1913 rt2560_start_locked(struct ifnet *ifp) 1914 { 1915 struct rt2560_softc *sc = ifp->if_softc; 1916 struct mbuf *m; 1917 struct ieee80211_node *ni; 1918 1919 for (;;) { 1920 IF_DEQUEUE(&ifp->if_snd, m); 1921 if (m == NULL) 1922 break; 1923 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1924 IF_PREPEND(&ifp->if_snd, m); 1925 ifp->if_flags |= IFF_OACTIVE; 1926 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1927 break; 1928 } 1929 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1930 if (rt2560_tx_data(sc, m, ni) != 0) { 1931 ieee80211_free_node(ni); 1932 ifp->if_oerrors++; 1933 break; 1934 } 1935 1936 sc->sc_tx_timer = 5; 1937 } 1938 } 1939 1940 static void 1941 rt2560_start(struct ifnet *ifp) 1942 { 1943 rt2560_start_locked(ifp); 1944 } 1945 1946 static void 1947 rt2560_watchdog_callout(void *arg) 1948 { 1949 struct rt2560_softc *sc = arg; 1950 struct ifnet *ifp = sc->sc_ifp; 1951 1952 KASSERT(ifp->if_flags & IFF_RUNNING, ("not running")); 1953 1954 if (sc->sc_invalid) /* card ejected */ 1955 return; 1956 1957 rt2560_encryption_intr(sc); 1958 rt2560_tx_intr(sc); 1959 1960 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1961 if_printf(ifp, "device timeout\n"); 1962 rt2560_init_locked(sc); 1963 ifp->if_oerrors++; 1964 /* NB: callout is reset in rt2560_init() */ 1965 return; 1966 } 1967 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 1968 } 1969 1970 static int 1971 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred) 1972 { 1973 struct rt2560_softc *sc = ifp->if_softc; 1974 struct ieee80211com *ic = ifp->if_l2com; 1975 struct ifreq *ifr = (struct ifreq *) data; 1976 int error = 0, startall = 0; 1977 1978 switch (cmd) { 1979 case SIOCSIFFLAGS: 1980 if (ifp->if_flags & IFF_UP) { 1981 if ((ifp->if_flags & IFF_RUNNING) == 0) { 1982 rt2560_init_locked(sc); 1983 startall = 1; 1984 } else 1985 rt2560_update_promisc(ifp); 1986 } else { 1987 if (ifp->if_flags & IFF_RUNNING) 1988 rt2560_stop_locked(sc); 1989 } 1990 if (startall) 1991 ieee80211_start_all(ic); 1992 break; 1993 case SIOCGIFMEDIA: 1994 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1995 break; 1996 case SIOCGIFADDR: 1997 error = ether_ioctl(ifp, cmd, data); 1998 break; 1999 default: 2000 error = EINVAL; 2001 break; 2002 } 2003 return error; 2004 } 2005 2006 static void 2007 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2008 { 2009 uint32_t tmp; 2010 int ntries; 2011 2012 for (ntries = 0; ntries < 100; ntries++) { 2013 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2014 break; 2015 DELAY(1); 2016 } 2017 if (ntries == 100) { 2018 device_printf(sc->sc_dev, "could not write to BBP\n"); 2019 return; 2020 } 2021 2022 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2023 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2024 2025 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2026 } 2027 2028 static uint8_t 2029 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2030 { 2031 uint32_t val; 2032 int ntries; 2033 2034 for (ntries = 0; ntries < 100; ntries++) { 2035 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2036 break; 2037 DELAY(1); 2038 } 2039 if (ntries == 100) { 2040 device_printf(sc->sc_dev, "could not read from BBP\n"); 2041 return 0; 2042 } 2043 2044 val = RT2560_BBP_BUSY | reg << 8; 2045 RAL_WRITE(sc, RT2560_BBPCSR, val); 2046 2047 for (ntries = 0; ntries < 100; ntries++) { 2048 val = RAL_READ(sc, RT2560_BBPCSR); 2049 if (!(val & RT2560_BBP_BUSY)) 2050 return val & 0xff; 2051 DELAY(1); 2052 } 2053 2054 device_printf(sc->sc_dev, "could not read from BBP\n"); 2055 return 0; 2056 } 2057 2058 static void 2059 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2060 { 2061 uint32_t tmp; 2062 int ntries; 2063 2064 for (ntries = 0; ntries < 100; ntries++) { 2065 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2066 break; 2067 DELAY(1); 2068 } 2069 if (ntries == 100) { 2070 device_printf(sc->sc_dev, "could not write to RF\n"); 2071 return; 2072 } 2073 2074 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2075 (reg & 0x3); 2076 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2077 2078 /* remember last written value in sc */ 2079 sc->rf_regs[reg] = val; 2080 2081 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2082 } 2083 2084 static void 2085 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2086 { 2087 struct ifnet *ifp = sc->sc_ifp; 2088 struct ieee80211com *ic = ifp->if_l2com; 2089 uint8_t power, tmp; 2090 u_int i, chan; 2091 2092 chan = ieee80211_chan2ieee(ic, c); 2093 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2094 2095 if (IEEE80211_IS_CHAN_2GHZ(c)) 2096 power = min(sc->txpow[chan - 1], 31); 2097 else 2098 power = 31; 2099 2100 /* adjust txpower using ifconfig settings */ 2101 power -= (100 - ic->ic_txpowlimit) / 8; 2102 2103 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2104 2105 switch (sc->rf_rev) { 2106 case RT2560_RF_2522: 2107 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2108 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2109 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2110 break; 2111 2112 case RT2560_RF_2523: 2113 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2114 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2115 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2116 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2117 break; 2118 2119 case RT2560_RF_2524: 2120 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2121 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2122 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2123 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2124 break; 2125 2126 case RT2560_RF_2525: 2127 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2128 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2129 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2130 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2131 2132 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2133 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2134 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2135 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2136 break; 2137 2138 case RT2560_RF_2525E: 2139 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2140 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2141 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2142 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2143 break; 2144 2145 case RT2560_RF_2526: 2146 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2147 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2148 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2149 2150 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2151 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2152 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2153 break; 2154 2155 /* dual-band RF */ 2156 case RT2560_RF_5222: 2157 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2158 2159 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2160 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2161 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2162 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2163 break; 2164 default: 2165 kprintf("unknown ral rev=%d\n", sc->rf_rev); 2166 } 2167 2168 /* XXX */ 2169 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2170 /* set Japan filter bit for channel 14 */ 2171 tmp = rt2560_bbp_read(sc, 70); 2172 2173 tmp &= ~RT2560_JAPAN_FILTER; 2174 if (chan == 14) 2175 tmp |= RT2560_JAPAN_FILTER; 2176 2177 rt2560_bbp_write(sc, 70, tmp); 2178 2179 /* clear CRC errors */ 2180 RAL_READ(sc, RT2560_CNT0); 2181 } 2182 } 2183 2184 static void 2185 rt2560_set_channel(struct ieee80211com *ic) 2186 { 2187 struct ifnet *ifp = ic->ic_ifp; 2188 struct rt2560_softc *sc = ifp->if_softc; 2189 2190 rt2560_set_chan(sc, ic->ic_curchan); 2191 2192 } 2193 2194 #if 0 2195 /* 2196 * Disable RF auto-tuning. 2197 */ 2198 static void 2199 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2200 { 2201 uint32_t tmp; 2202 2203 if (sc->rf_rev != RT2560_RF_2523) { 2204 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2205 rt2560_rf_write(sc, RAL_RF1, tmp); 2206 } 2207 2208 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2209 rt2560_rf_write(sc, RAL_RF3, tmp); 2210 2211 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2212 } 2213 #endif 2214 2215 /* 2216 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2217 * synchronization. 2218 */ 2219 static void 2220 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2221 { 2222 struct ifnet *ifp = sc->sc_ifp; 2223 struct ieee80211com *ic = ifp->if_l2com; 2224 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2225 uint16_t logcwmin, preload; 2226 uint32_t tmp; 2227 2228 /* first, disable TSF synchronization */ 2229 RAL_WRITE(sc, RT2560_CSR14, 0); 2230 2231 tmp = 16 * vap->iv_bss->ni_intval; 2232 RAL_WRITE(sc, RT2560_CSR12, tmp); 2233 2234 RAL_WRITE(sc, RT2560_CSR13, 0); 2235 2236 logcwmin = 5; 2237 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2238 tmp = logcwmin << 16 | preload; 2239 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2240 2241 /* finally, enable TSF synchronization */ 2242 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2243 if (ic->ic_opmode == IEEE80211_M_STA) 2244 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2245 else 2246 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2247 RT2560_ENABLE_BEACON_GENERATOR; 2248 RAL_WRITE(sc, RT2560_CSR14, tmp); 2249 2250 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2251 } 2252 2253 static void 2254 rt2560_enable_tsf(struct rt2560_softc *sc) 2255 { 2256 RAL_WRITE(sc, RT2560_CSR14, 0); 2257 RAL_WRITE(sc, RT2560_CSR14, 2258 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2259 } 2260 2261 static void 2262 rt2560_update_plcp(struct rt2560_softc *sc) 2263 { 2264 struct ifnet *ifp = sc->sc_ifp; 2265 struct ieee80211com *ic = ifp->if_l2com; 2266 2267 /* no short preamble for 1Mbps */ 2268 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2269 2270 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2271 /* values taken from the reference driver */ 2272 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2273 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2274 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2275 } else { 2276 /* same values as above or'ed 0x8 */ 2277 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2278 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2279 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2280 } 2281 2282 DPRINTF(sc, "updating PLCP for %s preamble\n", 2283 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2284 } 2285 2286 /* 2287 * This function can be called by ieee80211_set_shortslottime(). Refer to 2288 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2289 */ 2290 static void 2291 rt2560_update_slot(struct ifnet *ifp) 2292 { 2293 struct rt2560_softc *sc = ifp->if_softc; 2294 struct ieee80211com *ic = ifp->if_l2com; 2295 uint8_t slottime; 2296 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2297 uint32_t tmp; 2298 2299 #ifndef FORCE_SLOTTIME 2300 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2301 #else 2302 /* 2303 * Setting slot time according to "short slot time" capability 2304 * in beacon/probe_resp seems to cause problem to acknowledge 2305 * certain AP's data frames transimitted at CCK/DS rates: the 2306 * problematic AP keeps retransmitting data frames, probably 2307 * because MAC level acks are not received by hardware. 2308 * So we cheat a little bit here by claiming we are capable of 2309 * "short slot time" but setting hardware slot time to the normal 2310 * slot time. ral(4) does not seem to have trouble to receive 2311 * frames transmitted using short slot time even if hardware 2312 * slot time is set to normal slot time. If we didn't use this 2313 * trick, we would have to claim that short slot time is not 2314 * supported; this would give relative poor RX performance 2315 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2316 * slot time. 2317 */ 2318 slottime = 20; 2319 #endif 2320 2321 /* update the MAC slot boundaries */ 2322 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2323 tx_pifs = tx_sifs + slottime; 2324 tx_difs = tx_sifs + 2 * slottime; 2325 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2326 2327 tmp = RAL_READ(sc, RT2560_CSR11); 2328 tmp = (tmp & ~0x1f00) | slottime << 8; 2329 RAL_WRITE(sc, RT2560_CSR11, tmp); 2330 2331 tmp = tx_pifs << 16 | tx_sifs; 2332 RAL_WRITE(sc, RT2560_CSR18, tmp); 2333 2334 tmp = eifs << 16 | tx_difs; 2335 RAL_WRITE(sc, RT2560_CSR19, tmp); 2336 2337 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2338 } 2339 2340 static void 2341 rt2560_set_basicrates(struct rt2560_softc *sc) 2342 { 2343 struct ifnet *ifp = sc->sc_ifp; 2344 struct ieee80211com *ic = ifp->if_l2com; 2345 2346 /* update basic rate set */ 2347 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2348 /* 11b basic rates: 1, 2Mbps */ 2349 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2350 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2351 /* 11a basic rates: 6, 12, 24Mbps */ 2352 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2353 } else { 2354 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2355 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2356 } 2357 } 2358 2359 static void 2360 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2361 { 2362 uint32_t tmp; 2363 2364 /* set ON period to 70ms and OFF period to 30ms */ 2365 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2366 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2367 } 2368 2369 static void 2370 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2371 { 2372 uint32_t tmp; 2373 2374 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2375 RAL_WRITE(sc, RT2560_CSR5, tmp); 2376 2377 tmp = bssid[4] | bssid[5] << 8; 2378 RAL_WRITE(sc, RT2560_CSR6, tmp); 2379 2380 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2381 } 2382 2383 static void 2384 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2385 { 2386 uint32_t tmp; 2387 2388 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2389 RAL_WRITE(sc, RT2560_CSR3, tmp); 2390 2391 tmp = addr[4] | addr[5] << 8; 2392 RAL_WRITE(sc, RT2560_CSR4, tmp); 2393 2394 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2395 } 2396 2397 static void 2398 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2399 { 2400 uint32_t tmp; 2401 2402 tmp = RAL_READ(sc, RT2560_CSR3); 2403 addr[0] = tmp & 0xff; 2404 addr[1] = (tmp >> 8) & 0xff; 2405 addr[2] = (tmp >> 16) & 0xff; 2406 addr[3] = (tmp >> 24); 2407 2408 tmp = RAL_READ(sc, RT2560_CSR4); 2409 addr[4] = tmp & 0xff; 2410 addr[5] = (tmp >> 8) & 0xff; 2411 } 2412 2413 static void 2414 rt2560_update_promisc(struct ifnet *ifp) 2415 { 2416 struct rt2560_softc *sc = ifp->if_softc; 2417 uint32_t tmp; 2418 2419 tmp = RAL_READ(sc, RT2560_RXCSR0); 2420 2421 tmp &= ~RT2560_DROP_NOT_TO_ME; 2422 if (!(ifp->if_flags & IFF_PROMISC)) 2423 tmp |= RT2560_DROP_NOT_TO_ME; 2424 2425 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2426 2427 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2428 "entering" : "leaving"); 2429 } 2430 2431 static const char * 2432 rt2560_get_rf(int rev) 2433 { 2434 switch (rev) { 2435 case RT2560_RF_2522: return "RT2522"; 2436 case RT2560_RF_2523: return "RT2523"; 2437 case RT2560_RF_2524: return "RT2524"; 2438 case RT2560_RF_2525: return "RT2525"; 2439 case RT2560_RF_2525E: return "RT2525e"; 2440 case RT2560_RF_2526: return "RT2526"; 2441 case RT2560_RF_5222: return "RT5222"; 2442 default: return "unknown"; 2443 } 2444 } 2445 2446 static void 2447 rt2560_read_config(struct rt2560_softc *sc) 2448 { 2449 uint16_t val; 2450 int i; 2451 2452 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2453 sc->rf_rev = (val >> 11) & 0x7; 2454 sc->hw_radio = (val >> 10) & 0x1; 2455 sc->led_mode = (val >> 6) & 0x7; 2456 sc->rx_ant = (val >> 4) & 0x3; 2457 sc->tx_ant = (val >> 2) & 0x3; 2458 sc->nb_ant = val & 0x3; 2459 2460 /* read default values for BBP registers */ 2461 for (i = 0; i < 16; i++) { 2462 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2463 if (val == 0 || val == 0xffff) 2464 continue; 2465 2466 sc->bbp_prom[i].reg = val >> 8; 2467 sc->bbp_prom[i].val = val & 0xff; 2468 } 2469 2470 /* read Tx power for all b/g channels */ 2471 for (i = 0; i < 14 / 2; i++) { 2472 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2473 sc->txpow[i * 2] = val & 0xff; 2474 sc->txpow[i * 2 + 1] = val >> 8; 2475 } 2476 for (i = 0; i < 14; ++i) { 2477 if (sc->txpow[i] > 31) 2478 sc->txpow[i] = 24; 2479 } 2480 2481 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2482 if ((val & 0xff) == 0xff) 2483 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2484 else 2485 sc->rssi_corr = val & 0xff; 2486 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2487 sc->rssi_corr, val); 2488 } 2489 2490 2491 static void 2492 rt2560_scan_start(struct ieee80211com *ic) 2493 { 2494 struct ifnet *ifp = ic->ic_ifp; 2495 struct rt2560_softc *sc = ifp->if_softc; 2496 2497 /* abort TSF synchronization */ 2498 RAL_WRITE(sc, RT2560_CSR14, 0); 2499 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2500 } 2501 2502 static void 2503 rt2560_scan_end(struct ieee80211com *ic) 2504 { 2505 struct ifnet *ifp = ic->ic_ifp; 2506 struct rt2560_softc *sc = ifp->if_softc; 2507 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2508 2509 rt2560_enable_tsf_sync(sc); 2510 /* XXX keep local copy */ 2511 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2512 } 2513 2514 static int 2515 rt2560_bbp_init(struct rt2560_softc *sc) 2516 { 2517 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2518 int i, ntries; 2519 2520 /* wait for BBP to be ready */ 2521 for (ntries = 0; ntries < 100; ntries++) { 2522 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2523 break; 2524 DELAY(1); 2525 } 2526 if (ntries == 100) { 2527 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2528 return EIO; 2529 } 2530 2531 /* initialize BBP registers to default values */ 2532 for (i = 0; i < N(rt2560_def_bbp); i++) { 2533 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2534 rt2560_def_bbp[i].val); 2535 } 2536 2537 /* initialize BBP registers to values stored in EEPROM */ 2538 for (i = 0; i < 16; i++) { 2539 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2540 break; 2541 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2542 } 2543 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2544 2545 return 0; 2546 #undef N 2547 } 2548 2549 static void 2550 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2551 { 2552 uint32_t tmp; 2553 uint8_t tx; 2554 2555 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2556 if (antenna == 1) 2557 tx |= RT2560_BBP_ANTA; 2558 else if (antenna == 2) 2559 tx |= RT2560_BBP_ANTB; 2560 else 2561 tx |= RT2560_BBP_DIVERSITY; 2562 2563 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2564 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2565 sc->rf_rev == RT2560_RF_5222) 2566 tx |= RT2560_BBP_FLIPIQ; 2567 2568 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2569 2570 /* update values for CCK and OFDM in BBPCSR1 */ 2571 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2572 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2573 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2574 } 2575 2576 static void 2577 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2578 { 2579 uint8_t rx; 2580 2581 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2582 if (antenna == 1) 2583 rx |= RT2560_BBP_ANTA; 2584 else if (antenna == 2) 2585 rx |= RT2560_BBP_ANTB; 2586 else 2587 rx |= RT2560_BBP_DIVERSITY; 2588 2589 /* need to force no I/Q flip for RF 2525e and 2526 */ 2590 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2591 rx &= ~RT2560_BBP_FLIPIQ; 2592 2593 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2594 } 2595 2596 static void 2597 rt2560_init_locked(struct rt2560_softc *sc) 2598 { 2599 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2600 struct ifnet *ifp = sc->sc_ifp; 2601 struct ieee80211com *ic = ifp->if_l2com; 2602 uint32_t tmp; 2603 int i; 2604 2605 rt2560_stop_locked(sc); 2606 2607 /* setup tx rings */ 2608 tmp = RT2560_PRIO_RING_COUNT << 24 | 2609 RT2560_ATIM_RING_COUNT << 16 | 2610 RT2560_TX_RING_COUNT << 8 | 2611 RT2560_TX_DESC_SIZE; 2612 2613 /* rings must be initialized in this exact order */ 2614 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2615 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2616 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2617 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2618 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2619 2620 /* setup rx ring */ 2621 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2622 2623 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2624 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2625 2626 /* initialize MAC registers to default values */ 2627 for (i = 0; i < N(rt2560_def_mac); i++) 2628 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2629 2630 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2631 2632 /* set basic rate set (will be updated later) */ 2633 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2634 2635 rt2560_update_slot(ifp); 2636 rt2560_update_plcp(sc); 2637 rt2560_update_led(sc, 0, 0); 2638 2639 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2640 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2641 2642 if (rt2560_bbp_init(sc) != 0) { 2643 rt2560_stop(sc); 2644 return; 2645 } 2646 2647 rt2560_set_txantenna(sc, sc->tx_ant); 2648 rt2560_set_rxantenna(sc, sc->rx_ant); 2649 2650 /* set default BSS channel */ 2651 rt2560_set_chan(sc, ic->ic_curchan); 2652 2653 /* kick Rx */ 2654 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2655 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2656 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2657 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2658 ic->ic_opmode != IEEE80211_M_MBSS) 2659 tmp |= RT2560_DROP_TODS; 2660 if (!(ifp->if_flags & IFF_PROMISC)) 2661 tmp |= RT2560_DROP_NOT_TO_ME; 2662 } 2663 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2664 2665 /* clear old FCS and Rx FIFO errors */ 2666 RAL_READ(sc, RT2560_CNT0); 2667 RAL_READ(sc, RT2560_CNT4); 2668 2669 /* clear any pending interrupts */ 2670 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2671 2672 /* enable interrupts */ 2673 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2674 2675 ifp->if_flags &= ~IFF_OACTIVE; 2676 ifp->if_flags |= IFF_RUNNING; 2677 2678 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 2679 #undef N 2680 } 2681 2682 static void 2683 rt2560_init(void *priv) 2684 { 2685 struct rt2560_softc *sc = priv; 2686 struct ifnet *ifp = sc->sc_ifp; 2687 struct ieee80211com *ic = ifp->if_l2com; 2688 2689 rt2560_init_locked(sc); 2690 2691 if (ifp->if_flags & IFF_RUNNING) 2692 ieee80211_start_all(ic); /* start all vap's */ 2693 } 2694 2695 static void 2696 rt2560_stop_locked(struct rt2560_softc *sc) 2697 { 2698 struct ifnet *ifp = sc->sc_ifp; 2699 volatile int *flags = &sc->sc_flags; 2700 2701 while (*flags & RT2560_F_INPUT_RUNNING) 2702 zsleep(sc, &wlan_global_serializer, 0, "ralrunning", hz/10); 2703 2704 callout_stop(&sc->watchdog_ch); 2705 sc->sc_tx_timer = 0; 2706 2707 if (ifp->if_flags & IFF_RUNNING) { 2708 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2709 2710 /* abort Tx */ 2711 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2712 2713 /* disable Rx */ 2714 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2715 2716 /* reset ASIC (imply reset BBP) */ 2717 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2718 RAL_WRITE(sc, RT2560_CSR1, 0); 2719 2720 /* disable interrupts */ 2721 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2722 2723 /* reset Tx and Rx rings */ 2724 rt2560_reset_tx_ring(sc, &sc->txq); 2725 rt2560_reset_tx_ring(sc, &sc->atimq); 2726 rt2560_reset_tx_ring(sc, &sc->prioq); 2727 rt2560_reset_tx_ring(sc, &sc->bcnq); 2728 rt2560_reset_rx_ring(sc, &sc->rxq); 2729 } 2730 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2731 } 2732 2733 void 2734 rt2560_stop(void *arg) 2735 { 2736 struct rt2560_softc *sc = arg; 2737 2738 rt2560_stop_locked(sc); 2739 } 2740 2741 static int 2742 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2743 const struct ieee80211_bpf_params *params) 2744 { 2745 struct ieee80211com *ic = ni->ni_ic; 2746 struct ifnet *ifp = ic->ic_ifp; 2747 struct rt2560_softc *sc = ifp->if_softc; 2748 2749 /* prevent management frames from being sent if we're not ready */ 2750 if (!(ifp->if_flags & IFF_RUNNING)) { 2751 m_freem(m); 2752 ieee80211_free_node(ni); 2753 return ENETDOWN; 2754 } 2755 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2756 ifp->if_flags |= IFF_OACTIVE; 2757 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2758 m_freem(m); 2759 ieee80211_free_node(ni); 2760 return ENOBUFS; /* XXX */ 2761 } 2762 2763 ifp->if_opackets++; 2764 2765 if (params == NULL) { 2766 /* 2767 * Legacy path; interpret frame contents to decide 2768 * precisely how to send the frame. 2769 */ 2770 if (rt2560_tx_mgt(sc, m, ni) != 0) 2771 goto bad; 2772 } else { 2773 /* 2774 * Caller supplied explicit parameters to use in 2775 * sending the frame. 2776 */ 2777 if (rt2560_tx_raw(sc, m, ni, params)) 2778 goto bad; 2779 } 2780 sc->sc_tx_timer = 5; 2781 2782 return 0; 2783 bad: 2784 ifp->if_oerrors++; 2785 ieee80211_free_node(ni); 2786 return EIO; /* XXX */ 2787 } 2788