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, int opmode, 87 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 88 const uint8_t mac[IEEE80211_ADDR_LEN]); 89 static void rt2560_vap_delete(struct ieee80211vap *); 90 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 91 int); 92 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 93 struct rt2560_tx_ring *, int); 94 static void rt2560_reset_tx_ring(struct rt2560_softc *, 95 struct rt2560_tx_ring *); 96 static void rt2560_free_tx_ring(struct rt2560_softc *, 97 struct rt2560_tx_ring *); 98 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 99 struct rt2560_rx_ring *, int); 100 static void rt2560_reset_rx_ring(struct rt2560_softc *, 101 struct rt2560_rx_ring *); 102 static void rt2560_free_rx_ring(struct rt2560_softc *, 103 struct rt2560_rx_ring *); 104 static int rt2560_newstate(struct ieee80211vap *, 105 enum ieee80211_state, int); 106 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 107 static void rt2560_encryption_intr(struct rt2560_softc *); 108 static void rt2560_tx_intr(struct rt2560_softc *); 109 static void rt2560_prio_intr(struct rt2560_softc *); 110 static void rt2560_decryption_intr(struct rt2560_softc *); 111 static void rt2560_rx_intr(struct rt2560_softc *); 112 static void rt2560_beacon_update(struct ieee80211vap *, int item); 113 static void rt2560_beacon_expire(struct rt2560_softc *); 114 static void rt2560_wakeup_expire(struct rt2560_softc *); 115 static void rt2560_scan_start(struct ieee80211com *); 116 static void rt2560_scan_end(struct ieee80211com *); 117 static void rt2560_set_channel(struct ieee80211com *); 118 static void rt2560_setup_tx_desc(struct rt2560_softc *, 119 struct rt2560_tx_desc *, uint32_t, int, int, int, 120 bus_addr_t); 121 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 122 struct ieee80211_node *); 123 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 124 struct ieee80211_node *); 125 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 126 struct ieee80211_node *); 127 static void rt2560_start_locked(struct ifnet *); 128 static void rt2560_start(struct ifnet *, struct ifaltq_subque *); 129 static void rt2560_watchdog_callout(void *); 130 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t, 131 struct ucred *); 132 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 133 uint8_t); 134 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 135 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 136 uint32_t); 137 static void rt2560_set_chan(struct rt2560_softc *, 138 struct ieee80211_channel *); 139 #if 0 140 static void rt2560_disable_rf_tune(struct rt2560_softc *); 141 #endif 142 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 143 static void rt2560_enable_tsf(struct rt2560_softc *); 144 static void rt2560_update_plcp(struct rt2560_softc *); 145 static void rt2560_update_slot(struct ifnet *); 146 static void rt2560_set_basicrates(struct rt2560_softc *); 147 static void rt2560_update_led(struct rt2560_softc *, int, int); 148 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 149 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 150 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 151 static void rt2560_update_promisc(struct ifnet *); 152 static const char *rt2560_get_rf(int); 153 static void rt2560_read_config(struct rt2560_softc *); 154 static int rt2560_bbp_init(struct rt2560_softc *); 155 static void rt2560_set_txantenna(struct rt2560_softc *, int); 156 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 157 static void rt2560_init_locked(struct rt2560_softc *); 158 static void rt2560_init(void *); 159 static void rt2560_stop_locked(struct rt2560_softc *); 160 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 161 const struct ieee80211_bpf_params *); 162 163 static const struct { 164 uint32_t reg; 165 uint32_t val; 166 } rt2560_def_mac[] = { 167 RT2560_DEF_MAC 168 }; 169 170 static const struct { 171 uint8_t reg; 172 uint8_t val; 173 } rt2560_def_bbp[] = { 174 RT2560_DEF_BBP 175 }; 176 177 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 178 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 179 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 180 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 181 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 182 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 183 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 184 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 185 186 static const struct { 187 uint8_t chan; 188 uint32_t r1, r2, r4; 189 } rt2560_rf5222[] = { 190 RT2560_RF5222 191 }; 192 193 int 194 rt2560_attach(device_t dev, int id) 195 { 196 struct rt2560_softc *sc = device_get_softc(dev); 197 struct ieee80211com *ic; 198 struct ifnet *ifp; 199 int error; 200 uint8_t bands; 201 uint8_t macaddr[IEEE80211_ADDR_LEN]; 202 struct sysctl_ctx_list *ctx; 203 struct sysctl_oid *tree; 204 205 sc->sc_dev = dev; 206 207 callout_init(&sc->watchdog_ch); 208 209 /* retrieve RT2560 rev. no */ 210 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 211 212 /* retrieve RF rev. no and various other things from EEPROM */ 213 rt2560_read_config(sc); 214 215 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 216 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 217 218 /* 219 * Allocate Tx and Rx rings. 220 */ 221 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 222 if (error != 0) { 223 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 224 goto fail1; 225 } 226 227 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 228 if (error != 0) { 229 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 230 goto fail2; 231 } 232 233 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 234 if (error != 0) { 235 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 236 goto fail3; 237 } 238 239 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 240 if (error != 0) { 241 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 242 goto fail4; 243 } 244 245 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 246 if (error != 0) { 247 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 248 goto fail5; 249 } 250 251 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 252 if (ifp == NULL) { 253 device_printf(sc->sc_dev, "can not if_alloc()\n"); 254 goto fail6; 255 } 256 ic = ifp->if_l2com; 257 258 /* retrieve MAC address */ 259 rt2560_get_macaddr(sc, macaddr); 260 261 ifp->if_softc = sc; 262 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 263 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 264 ifp->if_init = rt2560_init; 265 ifp->if_ioctl = rt2560_ioctl; 266 ifp->if_start = rt2560_start; 267 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); 268 #ifdef notyet 269 ifq_set_ready(&ifp->if_snd); 270 #endif 271 272 ic->ic_ifp = ifp; 273 ic->ic_opmode = IEEE80211_M_STA; 274 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 275 276 /* set device capabilities */ 277 ic->ic_caps = 278 IEEE80211_C_STA /* station mode */ 279 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 280 | IEEE80211_C_HOSTAP /* hostap mode */ 281 | IEEE80211_C_MONITOR /* monitor mode */ 282 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 283 | IEEE80211_C_WDS /* 4-address traffic works */ 284 | IEEE80211_C_MBSS /* mesh point link mode */ 285 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 286 | IEEE80211_C_SHSLOT /* short slot time supported */ 287 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 288 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 289 #ifdef notyet 290 | IEEE80211_C_TXFRAG /* handle tx frags */ 291 #endif 292 ; 293 294 bands = 0; 295 setbit(&bands, IEEE80211_MODE_11B); 296 setbit(&bands, IEEE80211_MODE_11G); 297 if (sc->rf_rev == RT2560_RF_5222) 298 setbit(&bands, IEEE80211_MODE_11A); 299 ieee80211_init_channels(ic, NULL, &bands); 300 301 ieee80211_ifattach(ic, macaddr); 302 ic->ic_raw_xmit = rt2560_raw_xmit; 303 ic->ic_updateslot = rt2560_update_slot; 304 ic->ic_update_promisc = rt2560_update_promisc; 305 ic->ic_scan_start = rt2560_scan_start; 306 ic->ic_scan_end = rt2560_scan_end; 307 ic->ic_set_channel = rt2560_set_channel; 308 309 ic->ic_vap_create = rt2560_vap_create; 310 ic->ic_vap_delete = rt2560_vap_delete; 311 312 ieee80211_radiotap_attach(ic, 313 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 314 RT2560_TX_RADIOTAP_PRESENT, 315 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 316 RT2560_RX_RADIOTAP_PRESENT); 317 318 /* 319 * Add a few sysctl knobs. 320 */ 321 ctx = &sc->sc_sysctl_ctx; 322 sysctl_ctx_init(ctx); 323 tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), 324 OID_AUTO, 325 device_get_nameunit(sc->sc_dev), 326 CTLFLAG_RD, 0, ""); 327 if (tree == NULL) { 328 device_printf(sc->sc_dev, "can't add sysctl node\n"); 329 goto fail6; 330 } 331 332 #ifdef RAL_DEBUG 333 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 334 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 335 #endif 336 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 337 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 338 339 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 340 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 341 342 if (bootverbose) 343 ieee80211_announce(ic); 344 345 return 0; 346 347 fail6: rt2560_free_rx_ring(sc, &sc->rxq); 348 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 349 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 350 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 351 fail2: rt2560_free_tx_ring(sc, &sc->txq); 352 fail1: 353 354 return ENXIO; 355 } 356 357 int 358 rt2560_detach(void *xsc) 359 { 360 struct rt2560_softc *sc = xsc; 361 struct ifnet *ifp = sc->sc_ifp; 362 struct ieee80211com *ic = ifp->if_l2com; 363 364 rt2560_stop(sc); 365 366 ieee80211_ifdetach(ic); 367 368 rt2560_free_tx_ring(sc, &sc->txq); 369 rt2560_free_tx_ring(sc, &sc->atimq); 370 rt2560_free_tx_ring(sc, &sc->prioq); 371 rt2560_free_tx_ring(sc, &sc->bcnq); 372 rt2560_free_rx_ring(sc, &sc->rxq); 373 374 if_free(ifp); 375 376 return 0; 377 } 378 379 static struct ieee80211vap * 380 rt2560_vap_create(struct ieee80211com *ic, 381 const char name[IFNAMSIZ], int unit, int opmode, int flags, 382 const uint8_t bssid[IEEE80211_ADDR_LEN], 383 const uint8_t mac[IEEE80211_ADDR_LEN]) 384 { 385 struct ifnet *ifp = ic->ic_ifp; 386 struct rt2560_vap *rvp; 387 struct ieee80211vap *vap; 388 389 switch (opmode) { 390 case IEEE80211_M_STA: 391 case IEEE80211_M_IBSS: 392 case IEEE80211_M_AHDEMO: 393 case IEEE80211_M_MONITOR: 394 case IEEE80211_M_HOSTAP: 395 case IEEE80211_M_MBSS: 396 /* XXXRP: TBD */ 397 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 398 if_printf(ifp, "only 1 vap supported\n"); 399 return NULL; 400 } 401 if (opmode == IEEE80211_M_STA) 402 flags |= IEEE80211_CLONE_NOBEACONS; 403 break; 404 case IEEE80211_M_WDS: 405 if (TAILQ_EMPTY(&ic->ic_vaps) || 406 ic->ic_opmode != IEEE80211_M_HOSTAP) { 407 if_printf(ifp, "wds only supported in ap mode\n"); 408 return NULL; 409 } 410 /* 411 * Silently remove any request for a unique 412 * bssid; WDS vap's always share the local 413 * mac address. 414 */ 415 flags &= ~IEEE80211_CLONE_BSSID; 416 break; 417 default: 418 if_printf(ifp, "unknown opmode %d\n", opmode); 419 return NULL; 420 } 421 rvp = (struct rt2560_vap *) kmalloc(sizeof(struct rt2560_vap), 422 M_80211_VAP, M_INTWAIT | M_ZERO); 423 if (rvp == NULL) 424 return NULL; 425 vap = &rvp->ral_vap; 426 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 427 428 /* override state transition machine */ 429 rvp->ral_newstate = vap->iv_newstate; 430 vap->iv_newstate = rt2560_newstate; 431 vap->iv_update_beacon = rt2560_beacon_update; 432 433 ieee80211_ratectl_init(vap); 434 /* complete setup */ 435 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 436 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 437 ic->ic_opmode = opmode; 438 return vap; 439 } 440 441 static void 442 rt2560_vap_delete(struct ieee80211vap *vap) 443 { 444 struct rt2560_vap *rvp = RT2560_VAP(vap); 445 446 ieee80211_ratectl_deinit(vap); 447 ieee80211_vap_detach(vap); 448 kfree(rvp, M_80211_VAP); 449 } 450 451 void 452 rt2560_resume(void *xsc) 453 { 454 struct rt2560_softc *sc = xsc; 455 struct ifnet *ifp = sc->sc_ifp; 456 457 if (ifp->if_flags & IFF_UP) 458 rt2560_init(sc); 459 } 460 461 static void 462 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 463 { 464 if (error != 0) 465 return; 466 467 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 468 469 *(bus_addr_t *)arg = segs[0].ds_addr; 470 } 471 472 static int 473 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 474 int count) 475 { 476 int i, error; 477 478 ring->count = count; 479 ring->queued = 0; 480 ring->cur = ring->next = 0; 481 ring->cur_encrypt = ring->next_encrypt = 0; 482 483 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 484 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 485 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 486 0, &ring->desc_dmat); 487 if (error != 0) { 488 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 489 goto fail; 490 } 491 492 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 493 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 494 if (error != 0) { 495 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 496 goto fail; 497 } 498 499 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 500 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 501 0); 502 if (error != 0) { 503 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 504 goto fail; 505 } 506 507 ring->data = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 508 M_INTWAIT | M_ZERO); 509 if (ring->data == NULL) { 510 device_printf(sc->sc_dev, "could not allocate soft data\n"); 511 error = ENOMEM; 512 goto fail; 513 } 514 515 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 516 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 517 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, &ring->data_dmat); 518 if (error != 0) { 519 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 520 goto fail; 521 } 522 523 for (i = 0; i < count; i++) { 524 error = bus_dmamap_create(ring->data_dmat, 0, 525 &ring->data[i].map); 526 if (error != 0) { 527 device_printf(sc->sc_dev, "could not create DMA map\n"); 528 goto fail; 529 } 530 } 531 532 return 0; 533 534 fail: rt2560_free_tx_ring(sc, ring); 535 return error; 536 } 537 538 static void 539 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 540 { 541 struct rt2560_tx_desc *desc; 542 struct rt2560_tx_data *data; 543 int i; 544 545 for (i = 0; i < ring->count; i++) { 546 desc = &ring->desc[i]; 547 data = &ring->data[i]; 548 549 if (data->m != NULL) { 550 bus_dmamap_sync(ring->data_dmat, data->map, 551 BUS_DMASYNC_POSTWRITE); 552 bus_dmamap_unload(ring->data_dmat, data->map); 553 m_freem(data->m); 554 data->m = NULL; 555 } 556 557 if (data->ni != NULL) { 558 ieee80211_free_node(data->ni); 559 data->ni = NULL; 560 } 561 562 desc->flags = 0; 563 } 564 565 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 566 567 ring->queued = 0; 568 ring->cur = ring->next = 0; 569 ring->cur_encrypt = ring->next_encrypt = 0; 570 } 571 572 static void 573 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 574 { 575 struct rt2560_tx_data *data; 576 int i; 577 578 if (ring->desc != NULL) { 579 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 580 BUS_DMASYNC_POSTWRITE); 581 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 582 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 583 } 584 585 if (ring->desc_dmat != NULL) 586 bus_dma_tag_destroy(ring->desc_dmat); 587 588 if (ring->data != NULL) { 589 for (i = 0; i < ring->count; i++) { 590 data = &ring->data[i]; 591 592 if (data->m != NULL) { 593 bus_dmamap_sync(ring->data_dmat, data->map, 594 BUS_DMASYNC_POSTWRITE); 595 bus_dmamap_unload(ring->data_dmat, data->map); 596 m_freem(data->m); 597 } 598 599 if (data->ni != NULL) 600 ieee80211_free_node(data->ni); 601 602 if (data->map != NULL) 603 bus_dmamap_destroy(ring->data_dmat, data->map); 604 } 605 606 kfree(ring->data, M_DEVBUF); 607 } 608 609 if (ring->data_dmat != NULL) 610 bus_dma_tag_destroy(ring->data_dmat); 611 } 612 613 static int 614 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 615 int count) 616 { 617 struct rt2560_rx_desc *desc; 618 struct rt2560_rx_data *data; 619 bus_addr_t physaddr; 620 int i, error; 621 622 ring->count = count; 623 ring->cur = ring->next = 0; 624 ring->cur_decrypt = 0; 625 626 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 627 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 628 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 629 0, &ring->desc_dmat); 630 if (error != 0) { 631 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 632 goto fail; 633 } 634 635 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 636 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 637 if (error != 0) { 638 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 639 goto fail; 640 } 641 642 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 643 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 644 0); 645 if (error != 0) { 646 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 647 goto fail; 648 } 649 650 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 651 M_INTWAIT | M_ZERO); 652 if (ring->data == NULL) { 653 device_printf(sc->sc_dev, "could not allocate soft data\n"); 654 error = ENOMEM; 655 goto fail; 656 } 657 658 /* 659 * Pre-allocate Rx buffers and populate Rx ring. 660 */ 661 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 662 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 663 1, MCLBYTES, 0, &ring->data_dmat); 664 if (error != 0) { 665 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 666 goto fail; 667 } 668 669 for (i = 0; i < count; i++) { 670 desc = &sc->rxq.desc[i]; 671 data = &sc->rxq.data[i]; 672 673 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 674 if (error != 0) { 675 device_printf(sc->sc_dev, "could not create DMA map\n"); 676 goto fail; 677 } 678 679 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 680 if (data->m == NULL) { 681 device_printf(sc->sc_dev, 682 "could not allocate rx mbuf\n"); 683 error = ENOMEM; 684 goto fail; 685 } 686 687 error = bus_dmamap_load(ring->data_dmat, data->map, 688 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 689 &physaddr, 0); 690 if (error != 0) { 691 device_printf(sc->sc_dev, 692 "could not load rx buf DMA map"); 693 goto fail; 694 } 695 696 desc->flags = htole32(RT2560_RX_BUSY); 697 desc->physaddr = htole32(physaddr); 698 } 699 700 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 701 702 return 0; 703 704 fail: rt2560_free_rx_ring(sc, ring); 705 return error; 706 } 707 708 static void 709 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 710 { 711 int i; 712 713 for (i = 0; i < ring->count; i++) { 714 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 715 ring->data[i].drop = 0; 716 } 717 718 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 719 720 ring->cur = ring->next = 0; 721 ring->cur_decrypt = 0; 722 } 723 724 static void 725 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 726 { 727 struct rt2560_rx_data *data; 728 int i; 729 730 if (ring->desc != NULL) { 731 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 732 BUS_DMASYNC_POSTWRITE); 733 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 734 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 735 } 736 737 if (ring->desc_dmat != NULL) 738 bus_dma_tag_destroy(ring->desc_dmat); 739 740 if (ring->data != NULL) { 741 for (i = 0; i < ring->count; i++) { 742 data = &ring->data[i]; 743 744 if (data->m != NULL) { 745 bus_dmamap_sync(ring->data_dmat, data->map, 746 BUS_DMASYNC_POSTREAD); 747 bus_dmamap_unload(ring->data_dmat, data->map); 748 m_freem(data->m); 749 } 750 751 if (data->map != NULL) 752 bus_dmamap_destroy(ring->data_dmat, data->map); 753 } 754 755 kfree(ring->data, M_DEVBUF); 756 } 757 758 if (ring->data_dmat != NULL) 759 bus_dma_tag_destroy(ring->data_dmat); 760 } 761 762 static int 763 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 764 { 765 struct rt2560_vap *rvp = RT2560_VAP(vap); 766 struct ifnet *ifp = vap->iv_ic->ic_ifp; 767 struct rt2560_softc *sc = ifp->if_softc; 768 int error; 769 770 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 771 /* abort TSF synchronization */ 772 RAL_WRITE(sc, RT2560_CSR14, 0); 773 774 /* turn association led off */ 775 rt2560_update_led(sc, 0, 0); 776 } 777 778 error = rvp->ral_newstate(vap, nstate, arg); 779 780 if (error == 0 && nstate == IEEE80211_S_RUN) { 781 struct ieee80211_node *ni = vap->iv_bss; 782 struct mbuf *m; 783 784 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 785 rt2560_update_plcp(sc); 786 rt2560_set_basicrates(sc); 787 rt2560_set_bssid(sc, ni->ni_bssid); 788 } 789 790 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 791 vap->iv_opmode == IEEE80211_M_IBSS || 792 vap->iv_opmode == IEEE80211_M_MBSS) { 793 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 794 if (m == NULL) { 795 if_printf(ifp, "could not allocate beacon\n"); 796 return ENOBUFS; 797 } 798 ieee80211_ref_node(ni); 799 error = rt2560_tx_bcn(sc, m, ni); 800 if (error != 0) 801 return error; 802 } 803 804 /* turn assocation led on */ 805 rt2560_update_led(sc, 1, 0); 806 807 if (vap->iv_opmode != IEEE80211_M_MONITOR) 808 rt2560_enable_tsf_sync(sc); 809 else 810 rt2560_enable_tsf(sc); 811 } 812 return error; 813 } 814 815 /* 816 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 817 * 93C66). 818 */ 819 static uint16_t 820 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 821 { 822 uint32_t tmp; 823 uint16_t val; 824 int n; 825 826 /* clock C once before the first command */ 827 RT2560_EEPROM_CTL(sc, 0); 828 829 RT2560_EEPROM_CTL(sc, RT2560_S); 830 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 831 RT2560_EEPROM_CTL(sc, RT2560_S); 832 833 /* write start bit (1) */ 834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 835 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 836 837 /* write READ opcode (10) */ 838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 840 RT2560_EEPROM_CTL(sc, RT2560_S); 841 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 842 843 /* write address (A5-A0 or A7-A0) */ 844 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 845 for (; n >= 0; n--) { 846 RT2560_EEPROM_CTL(sc, RT2560_S | 847 (((addr >> n) & 1) << RT2560_SHIFT_D)); 848 RT2560_EEPROM_CTL(sc, RT2560_S | 849 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 850 } 851 852 RT2560_EEPROM_CTL(sc, RT2560_S); 853 854 /* read data Q15-Q0 */ 855 val = 0; 856 for (n = 15; n >= 0; n--) { 857 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 858 tmp = RAL_READ(sc, RT2560_CSR21); 859 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 860 RT2560_EEPROM_CTL(sc, RT2560_S); 861 } 862 863 RT2560_EEPROM_CTL(sc, 0); 864 865 /* clear Chip Select and clock C */ 866 RT2560_EEPROM_CTL(sc, RT2560_S); 867 RT2560_EEPROM_CTL(sc, 0); 868 RT2560_EEPROM_CTL(sc, RT2560_C); 869 870 return val; 871 } 872 873 /* 874 * Some frames were processed by the hardware cipher engine and are ready for 875 * transmission. 876 */ 877 static void 878 rt2560_encryption_intr(struct rt2560_softc *sc) 879 { 880 struct rt2560_tx_desc *desc; 881 int hw; 882 883 /* retrieve last descriptor index processed by cipher engine */ 884 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 885 hw /= RT2560_TX_DESC_SIZE; 886 887 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 888 BUS_DMASYNC_POSTREAD); 889 890 while (sc->txq.next_encrypt != hw) { 891 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 892 kprintf("hw encrypt %d, cur_encrypt %d\n", hw, 893 sc->txq.cur_encrypt); 894 break; 895 } 896 897 desc = &sc->txq.desc[sc->txq.next_encrypt]; 898 899 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 900 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 901 break; 902 903 /* for TKIP, swap eiv field to fix a bug in ASIC */ 904 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 905 RT2560_TX_CIPHER_TKIP) 906 desc->eiv = bswap32(desc->eiv); 907 908 /* mark the frame ready for transmission */ 909 desc->flags |= htole32(RT2560_TX_VALID); 910 desc->flags |= htole32(RT2560_TX_BUSY); 911 912 DPRINTFN(sc, 15, "encryption done idx=%u\n", 913 sc->txq.next_encrypt); 914 915 sc->txq.next_encrypt = 916 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 917 } 918 919 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 920 BUS_DMASYNC_PREWRITE); 921 922 /* kick Tx */ 923 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 924 } 925 926 static void 927 rt2560_tx_intr(struct rt2560_softc *sc) 928 { 929 struct ifnet *ifp = sc->sc_ifp; 930 struct rt2560_tx_desc *desc; 931 struct rt2560_tx_data *data; 932 struct mbuf *m; 933 uint32_t flags; 934 int retrycnt; 935 struct ieee80211vap *vap; 936 struct ieee80211_node *ni; 937 938 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 939 BUS_DMASYNC_POSTREAD); 940 941 for (;;) { 942 desc = &sc->txq.desc[sc->txq.next]; 943 data = &sc->txq.data[sc->txq.next]; 944 945 flags = le32toh(desc->flags); 946 if ((flags & RT2560_TX_BUSY) || 947 (flags & RT2560_TX_CIPHER_BUSY) || 948 !(flags & RT2560_TX_VALID)) 949 break; 950 951 m = data->m; 952 ni = data->ni; 953 vap = ni->ni_vap; 954 955 switch (flags & RT2560_TX_RESULT_MASK) { 956 case RT2560_TX_SUCCESS: 957 retrycnt = 0; 958 959 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 960 if (data->rix != IEEE80211_FIXED_RATE_NONE) 961 ieee80211_ratectl_tx_complete(vap, ni, 962 IEEE80211_RATECTL_TX_SUCCESS, 963 &retrycnt, NULL); 964 IFNET_STAT_INC(ifp, opackets, 1); 965 break; 966 967 case RT2560_TX_SUCCESS_RETRY: 968 retrycnt = RT2560_TX_RETRYCNT(flags); 969 970 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 971 retrycnt); 972 if (data->rix != IEEE80211_FIXED_RATE_NONE) 973 ieee80211_ratectl_tx_complete(vap, ni, 974 IEEE80211_RATECTL_TX_SUCCESS, 975 &retrycnt, NULL); 976 IFNET_STAT_INC(ifp, opackets, 1); 977 break; 978 979 case RT2560_TX_FAIL_RETRY: 980 retrycnt = RT2560_TX_RETRYCNT(flags); 981 982 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 983 retrycnt); 984 if (data->rix != IEEE80211_FIXED_RATE_NONE) 985 ieee80211_ratectl_tx_complete(vap, ni, 986 IEEE80211_RATECTL_TX_FAILURE, 987 &retrycnt, NULL); 988 IFNET_STAT_INC(ifp, oerrors, 1); 989 break; 990 991 case RT2560_TX_FAIL_INVALID: 992 case RT2560_TX_FAIL_OTHER: 993 default: 994 device_printf(sc->sc_dev, "sending data frame failed " 995 "0x%08x\n", flags); 996 IFNET_STAT_INC(ifp, oerrors, 1); 997 } 998 999 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1000 BUS_DMASYNC_POSTWRITE); 1001 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1002 m_freem(m); 1003 data->m = NULL; 1004 ieee80211_free_node(data->ni); 1005 data->ni = NULL; 1006 ni = NULL; 1007 1008 /* descriptor is no longer valid */ 1009 desc->flags &= ~htole32(RT2560_TX_VALID); 1010 1011 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1012 1013 sc->txq.queued--; 1014 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1015 } 1016 1017 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1018 BUS_DMASYNC_PREWRITE); 1019 1020 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1021 sc->sc_tx_timer = 0; 1022 1023 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1024 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1025 if ((sc->sc_flags & 1026 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1027 ifq_clr_oactive(&ifp->if_snd); 1028 rt2560_start_locked(ifp); 1029 } 1030 } 1031 1032 static void 1033 rt2560_prio_intr(struct rt2560_softc *sc) 1034 { 1035 struct ifnet *ifp = sc->sc_ifp; 1036 struct rt2560_tx_desc *desc; 1037 struct rt2560_tx_data *data; 1038 struct ieee80211_node *ni; 1039 struct mbuf *m; 1040 int flags; 1041 1042 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1043 BUS_DMASYNC_POSTREAD); 1044 1045 for (;;) { 1046 desc = &sc->prioq.desc[sc->prioq.next]; 1047 data = &sc->prioq.data[sc->prioq.next]; 1048 1049 flags = le32toh(desc->flags); 1050 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1051 break; 1052 1053 switch (flags & RT2560_TX_RESULT_MASK) { 1054 case RT2560_TX_SUCCESS: 1055 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1056 break; 1057 1058 case RT2560_TX_SUCCESS_RETRY: 1059 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1060 (flags >> 5) & 0x7); 1061 break; 1062 1063 case RT2560_TX_FAIL_RETRY: 1064 DPRINTFN(sc, 9, "%s\n", 1065 "sending mgt frame failed (too much retries)"); 1066 break; 1067 1068 case RT2560_TX_FAIL_INVALID: 1069 case RT2560_TX_FAIL_OTHER: 1070 default: 1071 device_printf(sc->sc_dev, "sending mgt frame failed " 1072 "0x%08x\n", flags); 1073 break; 1074 } 1075 1076 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1077 BUS_DMASYNC_POSTWRITE); 1078 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1079 1080 m = data->m; 1081 data->m = NULL; 1082 ni = data->ni; 1083 data->ni = NULL; 1084 1085 /* descriptor is no longer valid */ 1086 desc->flags &= ~htole32(RT2560_TX_VALID); 1087 1088 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1089 1090 sc->prioq.queued--; 1091 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1092 1093 if (m->m_flags & M_TXCB) 1094 ieee80211_process_callback(ni, m, 1095 (flags & RT2560_TX_RESULT_MASK) &~ 1096 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1097 m_freem(m); 1098 ieee80211_free_node(ni); 1099 } 1100 1101 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1102 BUS_DMASYNC_PREWRITE); 1103 1104 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1105 sc->sc_tx_timer = 0; 1106 1107 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1108 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1109 if ((sc->sc_flags & 1110 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1111 ifq_clr_oactive(&ifp->if_snd); 1112 rt2560_start_locked(ifp); 1113 } 1114 } 1115 1116 /* 1117 * Some frames were processed by the hardware cipher engine and are ready for 1118 * handoff to the IEEE802.11 layer. 1119 */ 1120 static void 1121 rt2560_decryption_intr(struct rt2560_softc *sc) 1122 { 1123 struct ifnet *ifp = sc->sc_ifp; 1124 struct ieee80211com *ic = ifp->if_l2com; 1125 struct rt2560_rx_desc *desc; 1126 struct rt2560_rx_data *data; 1127 bus_addr_t physaddr; 1128 struct ieee80211_frame *wh; 1129 struct ieee80211_node *ni; 1130 struct mbuf *mnew, *m; 1131 int hw, error; 1132 int8_t rssi, nf; 1133 1134 /* retrieve last decriptor index processed by cipher engine */ 1135 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1136 hw /= RT2560_RX_DESC_SIZE; 1137 1138 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1139 BUS_DMASYNC_POSTREAD); 1140 1141 for (; sc->rxq.cur_decrypt != hw;) { 1142 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1143 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1144 1145 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1146 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1147 break; 1148 1149 if (data->drop) { 1150 IFNET_STAT_INC(ifp, ierrors, 1); 1151 goto skip; 1152 } 1153 1154 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1155 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1156 IFNET_STAT_INC(ifp, ierrors, 1); 1157 goto skip; 1158 } 1159 1160 /* 1161 * Try to allocate a new mbuf for this ring element and load it 1162 * before processing the current mbuf. If the ring element 1163 * cannot be loaded, drop the received packet and reuse the old 1164 * mbuf. In the unlikely case that the old mbuf can't be 1165 * reloaded either, explicitly panic. 1166 */ 1167 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 1168 if (mnew == NULL) { 1169 IFNET_STAT_INC(ifp, ierrors, 1); 1170 goto skip; 1171 } 1172 1173 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1174 BUS_DMASYNC_POSTREAD); 1175 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1176 1177 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1178 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1179 &physaddr, 0); 1180 if (error != 0) { 1181 m_freem(mnew); 1182 1183 /* try to reload the old mbuf */ 1184 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1185 mtod(data->m, void *), MCLBYTES, 1186 rt2560_dma_map_addr, &physaddr, 0); 1187 if (error != 0) { 1188 /* very unlikely that it will fail... */ 1189 panic("%s: could not load old rx mbuf", 1190 device_get_name(sc->sc_dev)); 1191 } 1192 IFNET_STAT_INC(ifp, ierrors, 1); 1193 goto skip; 1194 } 1195 1196 /* 1197 * New mbuf successfully loaded, update Rx ring and continue 1198 * processing. 1199 */ 1200 m = data->m; 1201 data->m = mnew; 1202 desc->physaddr = htole32(physaddr); 1203 1204 /* finalize mbuf */ 1205 m->m_pkthdr.rcvif = ifp; 1206 m->m_pkthdr.len = m->m_len = 1207 (le32toh(desc->flags) >> 16) & 0xfff; 1208 1209 rssi = RT2560_RSSI(sc, desc->rssi); 1210 nf = RT2560_NOISE_FLOOR; 1211 if (ieee80211_radiotap_active(ic)) { 1212 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1213 uint32_t tsf_lo, tsf_hi; 1214 1215 /* get timestamp (low and high 32 bits) */ 1216 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1217 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1218 1219 tap->wr_tsf = 1220 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1221 tap->wr_flags = 0; 1222 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1223 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1224 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1225 tap->wr_antenna = sc->rx_ant; 1226 tap->wr_antsignal = nf + rssi; 1227 tap->wr_antnoise = nf; 1228 } 1229 1230 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1231 wh = mtod(m, struct ieee80211_frame *); 1232 ni = ieee80211_find_rxnode(ic, 1233 (struct ieee80211_frame_min *)wh); 1234 if (ni != NULL) { 1235 (void) ieee80211_input(ni, m, rssi, nf); 1236 ieee80211_free_node(ni); 1237 } else 1238 (void) ieee80211_input_all(ic, m, rssi, nf); 1239 1240 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1241 skip: desc->flags = htole32(RT2560_RX_BUSY); 1242 1243 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1244 1245 sc->rxq.cur_decrypt = 1246 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1247 } 1248 1249 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1250 BUS_DMASYNC_PREWRITE); 1251 } 1252 1253 /* 1254 * Some frames were received. Pass them to the hardware cipher engine before 1255 * sending them to the 802.11 layer. 1256 */ 1257 static void 1258 rt2560_rx_intr(struct rt2560_softc *sc) 1259 { 1260 struct rt2560_rx_desc *desc; 1261 struct rt2560_rx_data *data; 1262 1263 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1264 BUS_DMASYNC_POSTREAD); 1265 1266 for (;;) { 1267 desc = &sc->rxq.desc[sc->rxq.cur]; 1268 data = &sc->rxq.data[sc->rxq.cur]; 1269 1270 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1271 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1272 break; 1273 1274 data->drop = 0; 1275 1276 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1277 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1278 /* 1279 * This should not happen since we did not request 1280 * to receive those frames when we filled RXCSR0. 1281 */ 1282 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1283 le32toh(desc->flags)); 1284 data->drop = 1; 1285 } 1286 1287 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1288 DPRINTFN(sc, 5, "%s\n", "bad length"); 1289 data->drop = 1; 1290 } 1291 1292 /* mark the frame for decryption */ 1293 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1294 1295 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1296 1297 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1298 } 1299 1300 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1301 BUS_DMASYNC_PREWRITE); 1302 1303 /* kick decrypt */ 1304 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1305 } 1306 1307 static void 1308 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1309 { 1310 struct rt2560_vap *rvp = RT2560_VAP(vap); 1311 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1312 1313 setbit(bo->bo_flags, item); 1314 } 1315 1316 /* 1317 * This function is called periodically in IBSS mode when a new beacon must be 1318 * sent out. 1319 */ 1320 static void 1321 rt2560_beacon_expire(struct rt2560_softc *sc) 1322 { 1323 struct ifnet *ifp = sc->sc_ifp; 1324 struct ieee80211com *ic = ifp->if_l2com; 1325 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1326 struct rt2560_vap *rvp = RT2560_VAP(vap); 1327 struct rt2560_tx_data *data; 1328 1329 if (ic->ic_opmode != IEEE80211_M_IBSS && 1330 ic->ic_opmode != IEEE80211_M_HOSTAP && 1331 ic->ic_opmode != IEEE80211_M_MBSS) 1332 return; 1333 1334 data = &sc->bcnq.data[sc->bcnq.next]; 1335 /* 1336 * Don't send beacon if bsschan isn't set 1337 */ 1338 if (data->ni == NULL) 1339 return; 1340 1341 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1342 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1343 1344 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1345 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1346 1347 rt2560_tx_bcn(sc, data->m, data->ni); 1348 1349 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1350 1351 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1352 } 1353 1354 /* ARGSUSED */ 1355 static void 1356 rt2560_wakeup_expire(struct rt2560_softc *sc) 1357 { 1358 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1359 } 1360 1361 void 1362 rt2560_intr(void *arg) 1363 { 1364 struct rt2560_softc *sc = arg; 1365 struct ifnet *ifp = sc->sc_ifp; 1366 uint32_t r; 1367 1368 /* disable interrupts */ 1369 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1370 1371 /* don't re-enable interrupts if we're shutting down */ 1372 if (!(ifp->if_flags & IFF_RUNNING)) { 1373 return; 1374 } 1375 1376 r = RAL_READ(sc, RT2560_CSR7); 1377 RAL_WRITE(sc, RT2560_CSR7, r); 1378 1379 if (r & RT2560_BEACON_EXPIRE) 1380 rt2560_beacon_expire(sc); 1381 1382 if (r & RT2560_WAKEUP_EXPIRE) 1383 rt2560_wakeup_expire(sc); 1384 1385 if (r & RT2560_ENCRYPTION_DONE) 1386 rt2560_encryption_intr(sc); 1387 1388 if (r & RT2560_TX_DONE) 1389 rt2560_tx_intr(sc); 1390 1391 if (r & RT2560_PRIO_DONE) 1392 rt2560_prio_intr(sc); 1393 1394 if (r & RT2560_DECRYPTION_DONE) 1395 rt2560_decryption_intr(sc); 1396 1397 if (r & RT2560_RX_DONE) { 1398 rt2560_rx_intr(sc); 1399 rt2560_encryption_intr(sc); 1400 } 1401 1402 /* re-enable interrupts */ 1403 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1404 } 1405 1406 #define RAL_SIFS 10 /* us */ 1407 1408 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1409 1410 static uint8_t 1411 rt2560_plcp_signal(int rate) 1412 { 1413 switch (rate) { 1414 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1415 case 12: return 0xb; 1416 case 18: return 0xf; 1417 case 24: return 0xa; 1418 case 36: return 0xe; 1419 case 48: return 0x9; 1420 case 72: return 0xd; 1421 case 96: return 0x8; 1422 case 108: return 0xc; 1423 1424 /* CCK rates (NB: not IEEE std, device-specific) */ 1425 case 2: return 0x0; 1426 case 4: return 0x1; 1427 case 11: return 0x2; 1428 case 22: return 0x3; 1429 } 1430 return 0xff; /* XXX unsupported/unknown rate */ 1431 } 1432 1433 static void 1434 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1435 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1436 { 1437 struct ifnet *ifp = sc->sc_ifp; 1438 struct ieee80211com *ic = ifp->if_l2com; 1439 uint16_t plcp_length; 1440 int remainder; 1441 1442 desc->flags = htole32(flags); 1443 desc->flags |= htole32(len << 16); 1444 1445 desc->physaddr = htole32(physaddr); 1446 desc->wme = htole16( 1447 RT2560_AIFSN(2) | 1448 RT2560_LOGCWMIN(3) | 1449 RT2560_LOGCWMAX(8)); 1450 1451 /* setup PLCP fields */ 1452 desc->plcp_signal = rt2560_plcp_signal(rate); 1453 desc->plcp_service = 4; 1454 1455 len += IEEE80211_CRC_LEN; 1456 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1457 desc->flags |= htole32(RT2560_TX_OFDM); 1458 1459 plcp_length = len & 0xfff; 1460 desc->plcp_length_hi = plcp_length >> 6; 1461 desc->plcp_length_lo = plcp_length & 0x3f; 1462 } else { 1463 plcp_length = (16 * len + rate - 1) / rate; 1464 if (rate == 22) { 1465 remainder = (16 * len) % 22; 1466 if (remainder != 0 && remainder < 7) 1467 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1468 } 1469 desc->plcp_length_hi = plcp_length >> 8; 1470 desc->plcp_length_lo = plcp_length & 0xff; 1471 1472 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1473 desc->plcp_signal |= 0x08; 1474 } 1475 1476 if (!encrypt) 1477 desc->flags |= htole32(RT2560_TX_VALID); 1478 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1479 : htole32(RT2560_TX_BUSY); 1480 } 1481 1482 static int 1483 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1484 struct ieee80211_node *ni) 1485 { 1486 struct ieee80211vap *vap = ni->ni_vap; 1487 struct rt2560_tx_desc *desc; 1488 struct rt2560_tx_data *data; 1489 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1490 int nsegs, rate, error; 1491 1492 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1493 data = &sc->bcnq.data[sc->bcnq.cur]; 1494 1495 /* XXX maybe a separate beacon rate? */ 1496 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1497 1498 error = bus_dmamap_load_mbuf_segment(sc->bcnq.data_dmat, data->map, m0, 1499 segs, 1, &nsegs, BUS_DMA_NOWAIT); 1500 if (error != 0) { 1501 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1502 error); 1503 m_freem(m0); 1504 return error; 1505 } 1506 1507 if (ieee80211_radiotap_active_vap(vap)) { 1508 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1509 1510 tap->wt_flags = 0; 1511 tap->wt_rate = rate; 1512 tap->wt_antenna = sc->tx_ant; 1513 1514 ieee80211_radiotap_tx(vap, m0); 1515 } 1516 1517 data->m = m0; 1518 data->ni = ni; 1519 1520 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1521 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1522 1523 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1524 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1525 1526 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1527 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1528 BUS_DMASYNC_PREWRITE); 1529 1530 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1531 1532 return 0; 1533 } 1534 1535 static int 1536 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1537 struct ieee80211_node *ni) 1538 { 1539 struct ieee80211vap *vap = ni->ni_vap; 1540 struct ieee80211com *ic = ni->ni_ic; 1541 struct rt2560_tx_desc *desc; 1542 struct rt2560_tx_data *data; 1543 struct ieee80211_frame *wh; 1544 struct ieee80211_key *k; 1545 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1546 uint16_t dur; 1547 uint32_t flags = 0; 1548 int nsegs, rate, error; 1549 1550 desc = &sc->prioq.desc[sc->prioq.cur]; 1551 data = &sc->prioq.data[sc->prioq.cur]; 1552 1553 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1554 1555 wh = mtod(m0, struct ieee80211_frame *); 1556 1557 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1558 k = ieee80211_crypto_encap(ni, m0); 1559 if (k == NULL) { 1560 m_freem(m0); 1561 return ENOBUFS; 1562 } 1563 } 1564 1565 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1566 segs, 1, &nsegs, 0); 1567 if (error != 0) { 1568 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1569 error); 1570 m_freem(m0); 1571 return error; 1572 } 1573 1574 if (ieee80211_radiotap_active_vap(vap)) { 1575 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1576 1577 tap->wt_flags = 0; 1578 tap->wt_rate = rate; 1579 tap->wt_antenna = sc->tx_ant; 1580 1581 ieee80211_radiotap_tx(vap, m0); 1582 } 1583 1584 data->m = m0; 1585 data->ni = ni; 1586 /* management frames are not taken into account for amrr */ 1587 data->rix = IEEE80211_FIXED_RATE_NONE; 1588 1589 wh = mtod(m0, struct ieee80211_frame *); 1590 1591 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1592 flags |= RT2560_TX_ACK; 1593 1594 dur = ieee80211_ack_duration(ic->ic_rt, 1595 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1596 *(uint16_t *)wh->i_dur = htole16(dur); 1597 1598 /* tell hardware to add timestamp for probe responses */ 1599 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1600 IEEE80211_FC0_TYPE_MGT && 1601 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1602 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1603 flags |= RT2560_TX_TIMESTAMP; 1604 } 1605 1606 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1607 segs->ds_addr); 1608 1609 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1610 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1611 BUS_DMASYNC_PREWRITE); 1612 1613 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1614 m0->m_pkthdr.len, sc->prioq.cur, rate); 1615 1616 /* kick prio */ 1617 sc->prioq.queued++; 1618 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1619 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1620 1621 return 0; 1622 } 1623 1624 static int 1625 rt2560_sendprot(struct rt2560_softc *sc, 1626 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1627 { 1628 struct ieee80211com *ic = ni->ni_ic; 1629 const struct ieee80211_frame *wh; 1630 struct rt2560_tx_desc *desc; 1631 struct rt2560_tx_data *data; 1632 struct mbuf *mprot; 1633 int protrate, pktlen, flags, isshort, error; 1634 uint16_t dur; 1635 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1636 int nsegs; 1637 1638 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1639 ("protection %d", prot)); 1640 1641 wh = mtod(m, const struct ieee80211_frame *); 1642 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1643 1644 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1645 ieee80211_ack_rate(ic->ic_rt, rate); 1646 1647 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1648 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1649 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1650 flags = RT2560_TX_MORE_FRAG; 1651 if (prot == IEEE80211_PROT_RTSCTS) { 1652 /* NB: CTS is the same size as an ACK */ 1653 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1654 flags |= RT2560_TX_ACK; 1655 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1656 } else { 1657 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1658 } 1659 if (mprot == NULL) { 1660 /* XXX stat + msg */ 1661 return ENOBUFS; 1662 } 1663 1664 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1665 data = &sc->txq.data[sc->txq.cur_encrypt]; 1666 1667 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1668 mprot, segs, 1, &nsegs, 0); 1669 if (error != 0) { 1670 device_printf(sc->sc_dev, 1671 "could not map mbuf (error %d)\n", error); 1672 m_freem(mprot); 1673 return error; 1674 } 1675 1676 data->m = mprot; 1677 data->ni = ieee80211_ref_node(ni); 1678 /* ctl frames are not taken into account for amrr */ 1679 data->rix = IEEE80211_FIXED_RATE_NONE; 1680 1681 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1682 segs->ds_addr); 1683 1684 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1685 BUS_DMASYNC_PREWRITE); 1686 1687 sc->txq.queued++; 1688 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1689 1690 return 0; 1691 } 1692 1693 static int 1694 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1695 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1696 { 1697 struct ieee80211vap *vap = ni->ni_vap; 1698 struct ieee80211com *ic = ni->ni_ic; 1699 struct rt2560_tx_desc *desc; 1700 struct rt2560_tx_data *data; 1701 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1702 uint32_t flags; 1703 int nsegs, rate, error; 1704 1705 desc = &sc->prioq.desc[sc->prioq.cur]; 1706 data = &sc->prioq.data[sc->prioq.cur]; 1707 1708 rate = params->ibp_rate0; 1709 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1710 /* XXX fall back to mcast/mgmt rate? */ 1711 m_freem(m0); 1712 return EINVAL; 1713 } 1714 1715 flags = 0; 1716 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1717 flags |= RT2560_TX_ACK; 1718 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1719 error = rt2560_sendprot(sc, m0, ni, 1720 params->ibp_flags & IEEE80211_BPF_RTS ? 1721 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1722 rate); 1723 if (error) { 1724 m_freem(m0); 1725 return error; 1726 } 1727 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1728 } 1729 1730 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1731 segs, 1, &nsegs, 0); 1732 if (error != 0) { 1733 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1734 error); 1735 m_freem(m0); 1736 return error; 1737 } 1738 1739 if (ieee80211_radiotap_active_vap(vap)) { 1740 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1741 1742 tap->wt_flags = 0; 1743 tap->wt_rate = rate; 1744 tap->wt_antenna = sc->tx_ant; 1745 1746 ieee80211_radiotap_tx(ni->ni_vap, m0); 1747 } 1748 1749 data->m = m0; 1750 data->ni = ni; 1751 1752 /* XXX need to setup descriptor ourself */ 1753 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1754 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1755 segs->ds_addr); 1756 1757 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1758 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1759 BUS_DMASYNC_PREWRITE); 1760 1761 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1762 m0->m_pkthdr.len, sc->prioq.cur, rate); 1763 1764 /* kick prio */ 1765 sc->prioq.queued++; 1766 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1767 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1768 1769 return 0; 1770 } 1771 1772 static int 1773 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1774 struct ieee80211_node *ni) 1775 { 1776 struct ieee80211vap *vap = ni->ni_vap; 1777 struct ieee80211com *ic = ni->ni_ic; 1778 struct rt2560_tx_desc *desc; 1779 struct rt2560_tx_data *data; 1780 struct ieee80211_frame *wh; 1781 const struct ieee80211_txparam *tp; 1782 struct ieee80211_key *k; 1783 struct mbuf *mnew; 1784 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1785 uint16_t dur; 1786 uint32_t flags; 1787 int nsegs, rate, error; 1788 1789 wh = mtod(m0, struct ieee80211_frame *); 1790 1791 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1792 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1793 rate = tp->mcastrate; 1794 } else if (m0->m_flags & M_EAPOL) { 1795 rate = tp->mgmtrate; 1796 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1797 rate = tp->ucastrate; 1798 } else { 1799 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1800 rate = ni->ni_txrate; 1801 } 1802 1803 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1804 k = ieee80211_crypto_encap(ni, m0); 1805 if (k == NULL) { 1806 m_freem(m0); 1807 return ENOBUFS; 1808 } 1809 1810 /* packet header may have moved, reset our local pointer */ 1811 wh = mtod(m0, struct ieee80211_frame *); 1812 } 1813 1814 flags = 0; 1815 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1816 int prot = IEEE80211_PROT_NONE; 1817 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1818 prot = IEEE80211_PROT_RTSCTS; 1819 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1820 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1821 prot = ic->ic_protmode; 1822 if (prot != IEEE80211_PROT_NONE) { 1823 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1824 if (error) { 1825 m_freem(m0); 1826 return error; 1827 } 1828 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1829 } 1830 } 1831 1832 data = &sc->txq.data[sc->txq.cur_encrypt]; 1833 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1834 1835 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, m0, 1836 segs, 1, &nsegs, 0); 1837 if (error != 0 && error != EFBIG) { 1838 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1839 error); 1840 m_freem(m0); 1841 return error; 1842 } 1843 if (error != 0) { 1844 mnew = m_defrag(m0, MB_DONTWAIT); 1845 if (mnew == NULL) { 1846 device_printf(sc->sc_dev, 1847 "could not defragment mbuf\n"); 1848 m_freem(m0); 1849 return ENOBUFS; 1850 } 1851 m0 = mnew; 1852 1853 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1854 m0, segs, 1, &nsegs, 0); 1855 if (error != 0) { 1856 device_printf(sc->sc_dev, 1857 "could not map mbuf (error %d)\n", error); 1858 m_freem(m0); 1859 return error; 1860 } 1861 1862 /* packet header may have moved, reset our local pointer */ 1863 wh = mtod(m0, struct ieee80211_frame *); 1864 } 1865 1866 if (ieee80211_radiotap_active_vap(vap)) { 1867 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1868 1869 tap->wt_flags = 0; 1870 tap->wt_rate = rate; 1871 tap->wt_antenna = sc->tx_ant; 1872 1873 ieee80211_radiotap_tx(vap, m0); 1874 } 1875 1876 data->m = m0; 1877 data->ni = ni; 1878 1879 /* remember link conditions for rate adaptation algorithm */ 1880 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1881 data->rix = ni->ni_txrate; 1882 /* XXX probably need last rssi value and not avg */ 1883 data->rssi = ic->ic_node_getrssi(ni); 1884 } else 1885 data->rix = IEEE80211_FIXED_RATE_NONE; 1886 1887 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1888 flags |= RT2560_TX_ACK; 1889 1890 dur = ieee80211_ack_duration(ic->ic_rt, 1891 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1892 *(uint16_t *)wh->i_dur = htole16(dur); 1893 } 1894 1895 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1896 segs->ds_addr); 1897 1898 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1899 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1900 BUS_DMASYNC_PREWRITE); 1901 1902 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1903 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1904 1905 /* kick encrypt */ 1906 sc->txq.queued++; 1907 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1908 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1909 1910 return 0; 1911 } 1912 1913 static void 1914 rt2560_start_locked(struct ifnet *ifp) 1915 { 1916 struct rt2560_softc *sc = ifp->if_softc; 1917 struct mbuf *m; 1918 struct ieee80211_node *ni; 1919 1920 for (;;) { 1921 m = ifq_dequeue(&ifp->if_snd); 1922 if (m == NULL) 1923 break; 1924 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1925 ifq_prepend(&ifp->if_snd, m); 1926 ifq_set_oactive(&ifp->if_snd); 1927 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1928 break; 1929 } 1930 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1931 if (rt2560_tx_data(sc, m, ni) != 0) { 1932 ieee80211_free_node(ni); 1933 IFNET_STAT_INC(ifp, oerrors, 1); 1934 break; 1935 } 1936 1937 sc->sc_tx_timer = 5; 1938 } 1939 } 1940 1941 static void 1942 rt2560_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1943 { 1944 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1945 rt2560_start_locked(ifp); 1946 } 1947 1948 static void 1949 rt2560_watchdog_callout(void *arg) 1950 { 1951 struct rt2560_softc *sc = arg; 1952 struct ifnet *ifp = sc->sc_ifp; 1953 1954 KASSERT(ifp->if_flags & IFF_RUNNING, ("not running")); 1955 1956 if (sc->sc_invalid) /* card ejected */ 1957 return; 1958 1959 rt2560_encryption_intr(sc); 1960 rt2560_tx_intr(sc); 1961 1962 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1963 if_printf(ifp, "device timeout\n"); 1964 rt2560_init_locked(sc); 1965 IFNET_STAT_INC(ifp, oerrors, 1); 1966 /* NB: callout is reset in rt2560_init() */ 1967 return; 1968 } 1969 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 1970 } 1971 1972 static int 1973 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred) 1974 { 1975 struct rt2560_softc *sc = ifp->if_softc; 1976 struct ieee80211com *ic = ifp->if_l2com; 1977 struct ifreq *ifr = (struct ifreq *) data; 1978 int error = 0, startall = 0; 1979 1980 switch (cmd) { 1981 case SIOCSIFFLAGS: 1982 if (ifp->if_flags & IFF_UP) { 1983 if ((ifp->if_flags & IFF_RUNNING) == 0) { 1984 rt2560_init_locked(sc); 1985 startall = 1; 1986 } else 1987 rt2560_update_promisc(ifp); 1988 } else { 1989 if (ifp->if_flags & IFF_RUNNING) 1990 rt2560_stop_locked(sc); 1991 } 1992 if (startall) 1993 ieee80211_start_all(ic); 1994 break; 1995 case SIOCGIFMEDIA: 1996 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1997 break; 1998 case SIOCGIFADDR: 1999 error = ether_ioctl(ifp, cmd, data); 2000 break; 2001 default: 2002 error = EINVAL; 2003 break; 2004 } 2005 return error; 2006 } 2007 2008 static void 2009 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2010 { 2011 uint32_t tmp; 2012 int ntries; 2013 2014 for (ntries = 0; ntries < 100; ntries++) { 2015 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2016 break; 2017 DELAY(1); 2018 } 2019 if (ntries == 100) { 2020 device_printf(sc->sc_dev, "could not write to BBP\n"); 2021 return; 2022 } 2023 2024 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2025 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2026 2027 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2028 } 2029 2030 static uint8_t 2031 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2032 { 2033 uint32_t val; 2034 int ntries; 2035 2036 for (ntries = 0; ntries < 100; ntries++) { 2037 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2038 break; 2039 DELAY(1); 2040 } 2041 if (ntries == 100) { 2042 device_printf(sc->sc_dev, "could not read from BBP\n"); 2043 return 0; 2044 } 2045 2046 val = RT2560_BBP_BUSY | reg << 8; 2047 RAL_WRITE(sc, RT2560_BBPCSR, val); 2048 2049 for (ntries = 0; ntries < 100; ntries++) { 2050 val = RAL_READ(sc, RT2560_BBPCSR); 2051 if (!(val & RT2560_BBP_BUSY)) 2052 return val & 0xff; 2053 DELAY(1); 2054 } 2055 2056 device_printf(sc->sc_dev, "could not read from BBP\n"); 2057 return 0; 2058 } 2059 2060 static void 2061 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2062 { 2063 uint32_t tmp; 2064 int ntries; 2065 2066 for (ntries = 0; ntries < 100; ntries++) { 2067 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2068 break; 2069 DELAY(1); 2070 } 2071 if (ntries == 100) { 2072 device_printf(sc->sc_dev, "could not write to RF\n"); 2073 return; 2074 } 2075 2076 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2077 (reg & 0x3); 2078 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2079 2080 /* remember last written value in sc */ 2081 sc->rf_regs[reg] = val; 2082 2083 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2084 } 2085 2086 static void 2087 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2088 { 2089 struct ifnet *ifp = sc->sc_ifp; 2090 struct ieee80211com *ic = ifp->if_l2com; 2091 uint8_t power, tmp; 2092 u_int i, chan; 2093 2094 chan = ieee80211_chan2ieee(ic, c); 2095 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2096 2097 if (IEEE80211_IS_CHAN_2GHZ(c)) 2098 power = min(sc->txpow[chan - 1], 31); 2099 else 2100 power = 31; 2101 2102 /* adjust txpower using ifconfig settings */ 2103 power -= (100 - ic->ic_txpowlimit) / 8; 2104 2105 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2106 2107 switch (sc->rf_rev) { 2108 case RT2560_RF_2522: 2109 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2110 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2111 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2112 break; 2113 2114 case RT2560_RF_2523: 2115 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2116 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2117 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2118 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2119 break; 2120 2121 case RT2560_RF_2524: 2122 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2123 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2124 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2125 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2126 break; 2127 2128 case RT2560_RF_2525: 2129 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2130 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2131 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2132 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2133 2134 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2135 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2136 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2137 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2138 break; 2139 2140 case RT2560_RF_2525E: 2141 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2142 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2143 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2144 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2145 break; 2146 2147 case RT2560_RF_2526: 2148 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2149 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2150 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2151 2152 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2153 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2154 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2155 break; 2156 2157 /* dual-band RF */ 2158 case RT2560_RF_5222: 2159 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2160 2161 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2162 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2163 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2164 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2165 break; 2166 default: 2167 kprintf("unknown ral rev=%d\n", sc->rf_rev); 2168 } 2169 2170 /* XXX */ 2171 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2172 /* set Japan filter bit for channel 14 */ 2173 tmp = rt2560_bbp_read(sc, 70); 2174 2175 tmp &= ~RT2560_JAPAN_FILTER; 2176 if (chan == 14) 2177 tmp |= RT2560_JAPAN_FILTER; 2178 2179 rt2560_bbp_write(sc, 70, tmp); 2180 2181 /* clear CRC errors */ 2182 RAL_READ(sc, RT2560_CNT0); 2183 } 2184 } 2185 2186 static void 2187 rt2560_set_channel(struct ieee80211com *ic) 2188 { 2189 struct ifnet *ifp = ic->ic_ifp; 2190 struct rt2560_softc *sc = ifp->if_softc; 2191 2192 rt2560_set_chan(sc, ic->ic_curchan); 2193 2194 } 2195 2196 #if 0 2197 /* 2198 * Disable RF auto-tuning. 2199 */ 2200 static void 2201 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2202 { 2203 uint32_t tmp; 2204 2205 if (sc->rf_rev != RT2560_RF_2523) { 2206 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2207 rt2560_rf_write(sc, RAL_RF1, tmp); 2208 } 2209 2210 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2211 rt2560_rf_write(sc, RAL_RF3, tmp); 2212 2213 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2214 } 2215 #endif 2216 2217 /* 2218 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2219 * synchronization. 2220 */ 2221 static void 2222 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2223 { 2224 struct ifnet *ifp = sc->sc_ifp; 2225 struct ieee80211com *ic = ifp->if_l2com; 2226 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2227 uint16_t logcwmin, preload; 2228 uint32_t tmp; 2229 2230 /* first, disable TSF synchronization */ 2231 RAL_WRITE(sc, RT2560_CSR14, 0); 2232 2233 tmp = 16 * vap->iv_bss->ni_intval; 2234 RAL_WRITE(sc, RT2560_CSR12, tmp); 2235 2236 RAL_WRITE(sc, RT2560_CSR13, 0); 2237 2238 logcwmin = 5; 2239 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2240 tmp = logcwmin << 16 | preload; 2241 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2242 2243 /* finally, enable TSF synchronization */ 2244 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2245 if (ic->ic_opmode == IEEE80211_M_STA) 2246 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2247 else 2248 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2249 RT2560_ENABLE_BEACON_GENERATOR; 2250 RAL_WRITE(sc, RT2560_CSR14, tmp); 2251 2252 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2253 } 2254 2255 static void 2256 rt2560_enable_tsf(struct rt2560_softc *sc) 2257 { 2258 RAL_WRITE(sc, RT2560_CSR14, 0); 2259 RAL_WRITE(sc, RT2560_CSR14, 2260 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2261 } 2262 2263 static void 2264 rt2560_update_plcp(struct rt2560_softc *sc) 2265 { 2266 struct ifnet *ifp = sc->sc_ifp; 2267 struct ieee80211com *ic = ifp->if_l2com; 2268 2269 /* no short preamble for 1Mbps */ 2270 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2271 2272 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2273 /* values taken from the reference driver */ 2274 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2275 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2276 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2277 } else { 2278 /* same values as above or'ed 0x8 */ 2279 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2280 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2281 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2282 } 2283 2284 DPRINTF(sc, "updating PLCP for %s preamble\n", 2285 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2286 } 2287 2288 /* 2289 * This function can be called by ieee80211_set_shortslottime(). Refer to 2290 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2291 */ 2292 static void 2293 rt2560_update_slot(struct ifnet *ifp) 2294 { 2295 struct rt2560_softc *sc = ifp->if_softc; 2296 struct ieee80211com *ic = ifp->if_l2com; 2297 uint8_t slottime; 2298 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2299 uint32_t tmp; 2300 2301 #ifndef FORCE_SLOTTIME 2302 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2303 #else 2304 /* 2305 * Setting slot time according to "short slot time" capability 2306 * in beacon/probe_resp seems to cause problem to acknowledge 2307 * certain AP's data frames transimitted at CCK/DS rates: the 2308 * problematic AP keeps retransmitting data frames, probably 2309 * because MAC level acks are not received by hardware. 2310 * So we cheat a little bit here by claiming we are capable of 2311 * "short slot time" but setting hardware slot time to the normal 2312 * slot time. ral(4) does not seem to have trouble to receive 2313 * frames transmitted using short slot time even if hardware 2314 * slot time is set to normal slot time. If we didn't use this 2315 * trick, we would have to claim that short slot time is not 2316 * supported; this would give relative poor RX performance 2317 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2318 * slot time. 2319 */ 2320 slottime = 20; 2321 #endif 2322 2323 /* update the MAC slot boundaries */ 2324 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2325 tx_pifs = tx_sifs + slottime; 2326 tx_difs = tx_sifs + 2 * slottime; 2327 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2328 2329 tmp = RAL_READ(sc, RT2560_CSR11); 2330 tmp = (tmp & ~0x1f00) | slottime << 8; 2331 RAL_WRITE(sc, RT2560_CSR11, tmp); 2332 2333 tmp = tx_pifs << 16 | tx_sifs; 2334 RAL_WRITE(sc, RT2560_CSR18, tmp); 2335 2336 tmp = eifs << 16 | tx_difs; 2337 RAL_WRITE(sc, RT2560_CSR19, tmp); 2338 2339 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2340 } 2341 2342 static void 2343 rt2560_set_basicrates(struct rt2560_softc *sc) 2344 { 2345 struct ifnet *ifp = sc->sc_ifp; 2346 struct ieee80211com *ic = ifp->if_l2com; 2347 2348 /* update basic rate set */ 2349 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2350 /* 11b basic rates: 1, 2Mbps */ 2351 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2352 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2353 /* 11a basic rates: 6, 12, 24Mbps */ 2354 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2355 } else { 2356 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2357 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2358 } 2359 } 2360 2361 static void 2362 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2363 { 2364 uint32_t tmp; 2365 2366 /* set ON period to 70ms and OFF period to 30ms */ 2367 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2368 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2369 } 2370 2371 static void 2372 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2373 { 2374 uint32_t tmp; 2375 char ethstr[ETHER_ADDRSTRLEN + 1]; 2376 2377 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2378 RAL_WRITE(sc, RT2560_CSR5, tmp); 2379 2380 tmp = bssid[4] | bssid[5] << 8; 2381 RAL_WRITE(sc, RT2560_CSR6, tmp); 2382 2383 DPRINTF(sc, "setting BSSID to %s\n", kether_ntoa(bssid, ethstr)); 2384 } 2385 2386 static void 2387 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2388 { 2389 uint32_t tmp; 2390 char ethstr[ETHER_ADDRSTRLEN + 1]; 2391 2392 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2393 RAL_WRITE(sc, RT2560_CSR3, tmp); 2394 2395 tmp = addr[4] | addr[5] << 8; 2396 RAL_WRITE(sc, RT2560_CSR4, tmp); 2397 2398 DPRINTF(sc, "setting MAC address to %s\n", kether_ntoa(addr, ethstr)); 2399 } 2400 2401 static void 2402 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2403 { 2404 uint32_t tmp; 2405 2406 tmp = RAL_READ(sc, RT2560_CSR3); 2407 addr[0] = tmp & 0xff; 2408 addr[1] = (tmp >> 8) & 0xff; 2409 addr[2] = (tmp >> 16) & 0xff; 2410 addr[3] = (tmp >> 24); 2411 2412 tmp = RAL_READ(sc, RT2560_CSR4); 2413 addr[4] = tmp & 0xff; 2414 addr[5] = (tmp >> 8) & 0xff; 2415 } 2416 2417 static void 2418 rt2560_update_promisc(struct ifnet *ifp) 2419 { 2420 struct rt2560_softc *sc = ifp->if_softc; 2421 uint32_t tmp; 2422 2423 tmp = RAL_READ(sc, RT2560_RXCSR0); 2424 2425 tmp &= ~RT2560_DROP_NOT_TO_ME; 2426 if (!(ifp->if_flags & IFF_PROMISC)) 2427 tmp |= RT2560_DROP_NOT_TO_ME; 2428 2429 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2430 2431 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2432 "entering" : "leaving"); 2433 } 2434 2435 static const char * 2436 rt2560_get_rf(int rev) 2437 { 2438 switch (rev) { 2439 case RT2560_RF_2522: return "RT2522"; 2440 case RT2560_RF_2523: return "RT2523"; 2441 case RT2560_RF_2524: return "RT2524"; 2442 case RT2560_RF_2525: return "RT2525"; 2443 case RT2560_RF_2525E: return "RT2525e"; 2444 case RT2560_RF_2526: return "RT2526"; 2445 case RT2560_RF_5222: return "RT5222"; 2446 default: return "unknown"; 2447 } 2448 } 2449 2450 static void 2451 rt2560_read_config(struct rt2560_softc *sc) 2452 { 2453 uint16_t val; 2454 int i; 2455 2456 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2457 sc->rf_rev = (val >> 11) & 0x7; 2458 sc->hw_radio = (val >> 10) & 0x1; 2459 sc->led_mode = (val >> 6) & 0x7; 2460 sc->rx_ant = (val >> 4) & 0x3; 2461 sc->tx_ant = (val >> 2) & 0x3; 2462 sc->nb_ant = val & 0x3; 2463 2464 /* read default values for BBP registers */ 2465 for (i = 0; i < 16; i++) { 2466 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2467 if (val == 0 || val == 0xffff) 2468 continue; 2469 2470 sc->bbp_prom[i].reg = val >> 8; 2471 sc->bbp_prom[i].val = val & 0xff; 2472 } 2473 2474 /* read Tx power for all b/g channels */ 2475 for (i = 0; i < 14 / 2; i++) { 2476 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2477 sc->txpow[i * 2] = val & 0xff; 2478 sc->txpow[i * 2 + 1] = val >> 8; 2479 } 2480 for (i = 0; i < 14; ++i) { 2481 if (sc->txpow[i] > 31) 2482 sc->txpow[i] = 24; 2483 } 2484 2485 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2486 if ((val & 0xff) == 0xff) 2487 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2488 else 2489 sc->rssi_corr = val & 0xff; 2490 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2491 sc->rssi_corr, val); 2492 } 2493 2494 2495 static void 2496 rt2560_scan_start(struct ieee80211com *ic) 2497 { 2498 struct ifnet *ifp = ic->ic_ifp; 2499 struct rt2560_softc *sc = ifp->if_softc; 2500 2501 /* abort TSF synchronization */ 2502 RAL_WRITE(sc, RT2560_CSR14, 0); 2503 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2504 } 2505 2506 static void 2507 rt2560_scan_end(struct ieee80211com *ic) 2508 { 2509 struct ifnet *ifp = ic->ic_ifp; 2510 struct rt2560_softc *sc = ifp->if_softc; 2511 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2512 2513 rt2560_enable_tsf_sync(sc); 2514 /* XXX keep local copy */ 2515 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2516 } 2517 2518 static int 2519 rt2560_bbp_init(struct rt2560_softc *sc) 2520 { 2521 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2522 int i, ntries; 2523 2524 /* wait for BBP to be ready */ 2525 for (ntries = 0; ntries < 100; ntries++) { 2526 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2527 break; 2528 DELAY(1); 2529 } 2530 if (ntries == 100) { 2531 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2532 return EIO; 2533 } 2534 2535 /* initialize BBP registers to default values */ 2536 for (i = 0; i < N(rt2560_def_bbp); i++) { 2537 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2538 rt2560_def_bbp[i].val); 2539 } 2540 2541 /* initialize BBP registers to values stored in EEPROM */ 2542 for (i = 0; i < 16; i++) { 2543 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2544 break; 2545 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2546 } 2547 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2548 2549 return 0; 2550 #undef N 2551 } 2552 2553 static void 2554 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2555 { 2556 uint32_t tmp; 2557 uint8_t tx; 2558 2559 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2560 if (antenna == 1) 2561 tx |= RT2560_BBP_ANTA; 2562 else if (antenna == 2) 2563 tx |= RT2560_BBP_ANTB; 2564 else 2565 tx |= RT2560_BBP_DIVERSITY; 2566 2567 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2568 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2569 sc->rf_rev == RT2560_RF_5222) 2570 tx |= RT2560_BBP_FLIPIQ; 2571 2572 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2573 2574 /* update values for CCK and OFDM in BBPCSR1 */ 2575 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2576 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2577 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2578 } 2579 2580 static void 2581 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2582 { 2583 uint8_t rx; 2584 2585 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2586 if (antenna == 1) 2587 rx |= RT2560_BBP_ANTA; 2588 else if (antenna == 2) 2589 rx |= RT2560_BBP_ANTB; 2590 else 2591 rx |= RT2560_BBP_DIVERSITY; 2592 2593 /* need to force no I/Q flip for RF 2525e and 2526 */ 2594 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2595 rx &= ~RT2560_BBP_FLIPIQ; 2596 2597 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2598 } 2599 2600 static void 2601 rt2560_init_locked(struct rt2560_softc *sc) 2602 { 2603 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2604 struct ifnet *ifp = sc->sc_ifp; 2605 struct ieee80211com *ic = ifp->if_l2com; 2606 uint32_t tmp; 2607 int i; 2608 2609 rt2560_stop_locked(sc); 2610 2611 /* setup tx rings */ 2612 tmp = RT2560_PRIO_RING_COUNT << 24 | 2613 RT2560_ATIM_RING_COUNT << 16 | 2614 RT2560_TX_RING_COUNT << 8 | 2615 RT2560_TX_DESC_SIZE; 2616 2617 /* rings must be initialized in this exact order */ 2618 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2619 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2620 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2621 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2622 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2623 2624 /* setup rx ring */ 2625 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2626 2627 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2628 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2629 2630 /* initialize MAC registers to default values */ 2631 for (i = 0; i < N(rt2560_def_mac); i++) 2632 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2633 2634 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2635 2636 /* set basic rate set (will be updated later) */ 2637 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2638 2639 rt2560_update_slot(ifp); 2640 rt2560_update_plcp(sc); 2641 rt2560_update_led(sc, 0, 0); 2642 2643 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2644 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2645 2646 if (rt2560_bbp_init(sc) != 0) { 2647 rt2560_stop(sc); 2648 return; 2649 } 2650 2651 rt2560_set_txantenna(sc, sc->tx_ant); 2652 rt2560_set_rxantenna(sc, sc->rx_ant); 2653 2654 /* set default BSS channel */ 2655 rt2560_set_chan(sc, ic->ic_curchan); 2656 2657 /* kick Rx */ 2658 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2659 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2660 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2661 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2662 ic->ic_opmode != IEEE80211_M_MBSS) 2663 tmp |= RT2560_DROP_TODS; 2664 if (!(ifp->if_flags & IFF_PROMISC)) 2665 tmp |= RT2560_DROP_NOT_TO_ME; 2666 } 2667 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2668 2669 /* clear old FCS and Rx FIFO errors */ 2670 RAL_READ(sc, RT2560_CNT0); 2671 RAL_READ(sc, RT2560_CNT4); 2672 2673 /* clear any pending interrupts */ 2674 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2675 2676 /* enable interrupts */ 2677 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2678 2679 ifq_clr_oactive(&ifp->if_snd); 2680 ifp->if_flags |= IFF_RUNNING; 2681 2682 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 2683 #undef N 2684 } 2685 2686 static void 2687 rt2560_init(void *priv) 2688 { 2689 struct rt2560_softc *sc = priv; 2690 struct ifnet *ifp = sc->sc_ifp; 2691 struct ieee80211com *ic = ifp->if_l2com; 2692 2693 rt2560_init_locked(sc); 2694 2695 if (ifp->if_flags & IFF_RUNNING) 2696 ieee80211_start_all(ic); /* start all vap's */ 2697 } 2698 2699 static void 2700 rt2560_stop_locked(struct rt2560_softc *sc) 2701 { 2702 struct ifnet *ifp = sc->sc_ifp; 2703 volatile int *flags = &sc->sc_flags; 2704 2705 while (*flags & RT2560_F_INPUT_RUNNING) 2706 zsleep(sc, &wlan_global_serializer, 0, "ralrunning", hz/10); 2707 2708 callout_stop(&sc->watchdog_ch); 2709 sc->sc_tx_timer = 0; 2710 2711 if (ifp->if_flags & IFF_RUNNING) { 2712 ifp->if_flags &= ~IFF_RUNNING; 2713 ifq_clr_oactive(&ifp->if_snd); 2714 2715 /* abort Tx */ 2716 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2717 2718 /* disable Rx */ 2719 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2720 2721 /* reset ASIC (imply reset BBP) */ 2722 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2723 RAL_WRITE(sc, RT2560_CSR1, 0); 2724 2725 /* disable interrupts */ 2726 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2727 2728 /* reset Tx and Rx rings */ 2729 rt2560_reset_tx_ring(sc, &sc->txq); 2730 rt2560_reset_tx_ring(sc, &sc->atimq); 2731 rt2560_reset_tx_ring(sc, &sc->prioq); 2732 rt2560_reset_tx_ring(sc, &sc->bcnq); 2733 rt2560_reset_rx_ring(sc, &sc->rxq); 2734 } 2735 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2736 } 2737 2738 void 2739 rt2560_stop(void *arg) 2740 { 2741 struct rt2560_softc *sc = arg; 2742 2743 rt2560_stop_locked(sc); 2744 } 2745 2746 static int 2747 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2748 const struct ieee80211_bpf_params *params) 2749 { 2750 struct ieee80211com *ic = ni->ni_ic; 2751 struct ifnet *ifp = ic->ic_ifp; 2752 struct rt2560_softc *sc = ifp->if_softc; 2753 2754 /* prevent management frames from being sent if we're not ready */ 2755 if (!(ifp->if_flags & IFF_RUNNING)) { 2756 m_freem(m); 2757 ieee80211_free_node(ni); 2758 return ENETDOWN; 2759 } 2760 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2761 ifq_set_oactive(&ifp->if_snd); 2762 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2763 m_freem(m); 2764 ieee80211_free_node(ni); 2765 return ENOBUFS; /* XXX */ 2766 } 2767 2768 IFNET_STAT_INC(ifp, opackets, 1); 2769 2770 if (params == NULL) { 2771 /* 2772 * Legacy path; interpret frame contents to decide 2773 * precisely how to send the frame. 2774 */ 2775 if (rt2560_tx_mgt(sc, m, ni) != 0) 2776 goto bad; 2777 } else { 2778 /* 2779 * Caller supplied explicit parameters to use in 2780 * sending the frame. 2781 */ 2782 if (rt2560_tx_raw(sc, m, ni, params)) 2783 goto bad; 2784 } 2785 sc->sc_tx_timer = 5; 2786 2787 return 0; 2788 bad: 2789 IFNET_STAT_INC(ifp, oerrors, 1); 2790 ieee80211_free_node(ni); 2791 return EIO; /* XXX */ 2792 } 2793