1 /* $FreeBSD: head/sys/dev/ral/rt2560.c 195618 2009-07-11 15:02:45Z rpaulo $ */ 2 3 /*- 4 * Copyright (c) 2005, 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 * 19 * $FreeBSD: head/sys/dev/ral/rt2560.c 195618 2009-07-11 15:02:45Z rpaulo $ 20 */ 21 22 23 /*- 24 * Ralink Technology RT2560 chipset driver 25 * http://www.ralinktech.com/ 26 */ 27 28 #include <sys/param.h> 29 #include <sys/sysctl.h> 30 #include <sys/sockio.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/endian.h> 41 #include <sys/rman.h> 42 43 #include <net/bpf.h> 44 #include <net/if.h> 45 #include <net/if_arp.h> 46 #include <net/ethernet.h> 47 #include <net/if_dl.h> 48 #include <net/if_media.h> 49 #include <net/if_types.h> 50 #include <net/ifq_var.h> 51 52 #include <netproto/802_11/ieee80211_var.h> 53 #include <netproto/802_11/ieee80211_radiotap.h> 54 #include <netproto/802_11/ieee80211_regdomain.h> 55 #include <netproto/802_11/ieee80211_ratectl.h> 56 57 #include <netinet/in.h> 58 #include <netinet/in_systm.h> 59 #include <netinet/in_var.h> 60 #include <netinet/ip.h> 61 #include <netinet/if_ether.h> 62 63 #include <dev/netif/ral/rt2560reg.h> 64 #include <dev/netif/ral/rt2560var.h> 65 66 #define RT2560_RSSI(sc, rssi) \ 67 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 68 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 69 70 #define RAL_DEBUG 71 #ifdef RAL_DEBUG 72 #define DPRINTF(sc, fmt, ...) do { \ 73 if (sc->sc_debug > 0) \ 74 kprintf(fmt, __VA_ARGS__); \ 75 } while (0) 76 #define DPRINTFN(sc, n, fmt, ...) do { \ 77 if (sc->sc_debug >= (n)) \ 78 kprintf(fmt, __VA_ARGS__); \ 79 } while (0) 80 #else 81 #define DPRINTF(sc, fmt, ...) 82 #define DPRINTFN(sc, n, fmt, ...) 83 #endif 84 85 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 86 const char name[IFNAMSIZ], int unit, 87 enum ieee80211_opmode opmode, 88 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 89 const uint8_t mac[IEEE80211_ADDR_LEN]); 90 static void rt2560_vap_delete(struct ieee80211vap *); 91 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 92 int); 93 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 94 struct rt2560_tx_ring *, int); 95 static void rt2560_reset_tx_ring(struct rt2560_softc *, 96 struct rt2560_tx_ring *); 97 static void rt2560_free_tx_ring(struct rt2560_softc *, 98 struct rt2560_tx_ring *); 99 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 100 struct rt2560_rx_ring *, int); 101 static void rt2560_reset_rx_ring(struct rt2560_softc *, 102 struct rt2560_rx_ring *); 103 static void rt2560_free_rx_ring(struct rt2560_softc *, 104 struct rt2560_rx_ring *); 105 static int rt2560_newstate(struct ieee80211vap *, 106 enum ieee80211_state, int); 107 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 108 static void rt2560_encryption_intr(struct rt2560_softc *); 109 static void rt2560_tx_intr(struct rt2560_softc *); 110 static void rt2560_prio_intr(struct rt2560_softc *); 111 static void rt2560_decryption_intr(struct rt2560_softc *); 112 static void rt2560_rx_intr(struct rt2560_softc *); 113 static void rt2560_beacon_update(struct ieee80211vap *, int item); 114 static void rt2560_beacon_expire(struct rt2560_softc *); 115 static void rt2560_wakeup_expire(struct rt2560_softc *); 116 static void rt2560_scan_start(struct ieee80211com *); 117 static void rt2560_scan_end(struct ieee80211com *); 118 static void rt2560_set_channel(struct ieee80211com *); 119 static void rt2560_setup_tx_desc(struct rt2560_softc *, 120 struct rt2560_tx_desc *, uint32_t, int, int, int, 121 bus_addr_t); 122 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 123 struct ieee80211_node *); 124 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 125 struct ieee80211_node *); 126 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128 static void rt2560_start_locked(struct ifnet *); 129 static void rt2560_start(struct ifnet *, struct ifaltq_subque *); 130 static void rt2560_watchdog_callout(void *); 131 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t, 132 struct ucred *); 133 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 134 uint8_t); 135 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 136 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 137 uint32_t); 138 static void rt2560_set_chan(struct rt2560_softc *, 139 struct ieee80211_channel *); 140 #if 0 141 static void rt2560_disable_rf_tune(struct rt2560_softc *); 142 #endif 143 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 144 static void rt2560_enable_tsf(struct rt2560_softc *); 145 static void rt2560_update_plcp(struct rt2560_softc *); 146 static void rt2560_update_slot(struct ifnet *); 147 static void rt2560_set_basicrates(struct rt2560_softc *); 148 static void rt2560_update_led(struct rt2560_softc *, int, int); 149 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 150 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 151 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 152 static void rt2560_update_promisc(struct ifnet *); 153 static const char *rt2560_get_rf(int); 154 static void rt2560_read_config(struct rt2560_softc *); 155 static int rt2560_bbp_init(struct rt2560_softc *); 156 static void rt2560_set_txantenna(struct rt2560_softc *, int); 157 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 158 static void rt2560_init_locked(struct rt2560_softc *); 159 static void rt2560_init(void *); 160 static void rt2560_stop_locked(struct rt2560_softc *); 161 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 162 const struct ieee80211_bpf_params *); 163 164 static const struct { 165 uint32_t reg; 166 uint32_t val; 167 } rt2560_def_mac[] = { 168 RT2560_DEF_MAC 169 }; 170 171 static const struct { 172 uint8_t reg; 173 uint8_t val; 174 } rt2560_def_bbp[] = { 175 RT2560_DEF_BBP 176 }; 177 178 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 179 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 180 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 181 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 182 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 183 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 184 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 185 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 186 187 static const struct { 188 uint8_t chan; 189 uint32_t r1, r2, r4; 190 } rt2560_rf5222[] = { 191 RT2560_RF5222 192 }; 193 194 int 195 rt2560_attach(device_t dev, int id) 196 { 197 struct rt2560_softc *sc = device_get_softc(dev); 198 struct ieee80211com *ic; 199 struct ifnet *ifp; 200 int error; 201 uint8_t bands; 202 uint8_t macaddr[IEEE80211_ADDR_LEN]; 203 struct sysctl_ctx_list *ctx; 204 struct sysctl_oid *tree; 205 206 sc->sc_dev = dev; 207 208 callout_init(&sc->watchdog_ch); 209 210 /* retrieve RT2560 rev. no */ 211 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 212 213 /* retrieve RF rev. no and various other things from EEPROM */ 214 rt2560_read_config(sc); 215 216 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 217 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 218 219 /* 220 * Allocate Tx and Rx rings. 221 */ 222 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 223 if (error != 0) { 224 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 225 goto fail1; 226 } 227 228 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 229 if (error != 0) { 230 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 231 goto fail2; 232 } 233 234 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 235 if (error != 0) { 236 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 237 goto fail3; 238 } 239 240 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 241 if (error != 0) { 242 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 243 goto fail4; 244 } 245 246 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 247 if (error != 0) { 248 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 249 goto fail5; 250 } 251 252 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 253 if (ifp == NULL) { 254 device_printf(sc->sc_dev, "can not if_alloc()\n"); 255 goto fail6; 256 } 257 ic = ifp->if_l2com; 258 259 /* retrieve MAC address */ 260 rt2560_get_macaddr(sc, macaddr); 261 262 ifp->if_softc = sc; 263 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 264 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 265 ifp->if_init = rt2560_init; 266 ifp->if_ioctl = rt2560_ioctl; 267 ifp->if_start = rt2560_start; 268 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); 269 #ifdef notyet 270 ifq_set_ready(&ifp->if_snd); 271 #endif 272 273 ic->ic_ifp = ifp; 274 ic->ic_opmode = IEEE80211_M_STA; 275 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 276 277 /* set device capabilities */ 278 ic->ic_caps = 279 IEEE80211_C_STA /* station mode */ 280 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 281 | IEEE80211_C_HOSTAP /* hostap mode */ 282 | IEEE80211_C_MONITOR /* monitor mode */ 283 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 284 | IEEE80211_C_WDS /* 4-address traffic works */ 285 | IEEE80211_C_MBSS /* mesh point link mode */ 286 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 287 | IEEE80211_C_SHSLOT /* short slot time supported */ 288 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 289 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 290 #ifdef notyet 291 | IEEE80211_C_TXFRAG /* handle tx frags */ 292 #endif 293 ; 294 295 bands = 0; 296 setbit(&bands, IEEE80211_MODE_11B); 297 setbit(&bands, IEEE80211_MODE_11G); 298 if (sc->rf_rev == RT2560_RF_5222) 299 setbit(&bands, IEEE80211_MODE_11A); 300 ieee80211_init_channels(ic, NULL, &bands); 301 302 ieee80211_ifattach(ic, macaddr); 303 ic->ic_raw_xmit = rt2560_raw_xmit; 304 ic->ic_updateslot = rt2560_update_slot; 305 ic->ic_update_promisc = rt2560_update_promisc; 306 ic->ic_scan_start = rt2560_scan_start; 307 ic->ic_scan_end = rt2560_scan_end; 308 ic->ic_set_channel = rt2560_set_channel; 309 310 ic->ic_vap_create = rt2560_vap_create; 311 ic->ic_vap_delete = rt2560_vap_delete; 312 313 ieee80211_radiotap_attach(ic, 314 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 315 RT2560_TX_RADIOTAP_PRESENT, 316 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 317 RT2560_RX_RADIOTAP_PRESENT); 318 319 /* 320 * Add a few sysctl knobs. 321 */ 322 ctx = device_get_sysctl_ctx(sc->sc_dev); 323 tree = device_get_sysctl_tree(sc->sc_dev); 324 #ifdef RAL_DEBUG 325 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 326 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 327 #endif 328 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 329 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 330 331 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 332 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 333 334 if (bootverbose) 335 ieee80211_announce(ic); 336 337 return 0; 338 339 fail6: rt2560_free_rx_ring(sc, &sc->rxq); 340 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 341 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 342 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 343 fail2: rt2560_free_tx_ring(sc, &sc->txq); 344 fail1: 345 346 return ENXIO; 347 } 348 349 int 350 rt2560_detach(void *xsc) 351 { 352 struct rt2560_softc *sc = xsc; 353 struct ifnet *ifp = sc->sc_ifp; 354 struct ieee80211com *ic = ifp->if_l2com; 355 356 rt2560_stop(sc); 357 358 ieee80211_ifdetach(ic); 359 360 rt2560_free_tx_ring(sc, &sc->txq); 361 rt2560_free_tx_ring(sc, &sc->atimq); 362 rt2560_free_tx_ring(sc, &sc->prioq); 363 rt2560_free_tx_ring(sc, &sc->bcnq); 364 rt2560_free_rx_ring(sc, &sc->rxq); 365 366 if_free(ifp); 367 368 return 0; 369 } 370 371 static struct ieee80211vap * 372 rt2560_vap_create(struct ieee80211com *ic, 373 const char name[IFNAMSIZ], int unit, 374 enum ieee80211_opmode opmode, int flags, 375 const uint8_t bssid[IEEE80211_ADDR_LEN], 376 const uint8_t mac[IEEE80211_ADDR_LEN]) 377 { 378 struct ifnet *ifp = ic->ic_ifp; 379 struct rt2560_vap *rvp; 380 struct ieee80211vap *vap; 381 382 switch (opmode) { 383 case IEEE80211_M_STA: 384 case IEEE80211_M_IBSS: 385 case IEEE80211_M_AHDEMO: 386 case IEEE80211_M_MONITOR: 387 case IEEE80211_M_HOSTAP: 388 case IEEE80211_M_MBSS: 389 /* XXXRP: TBD */ 390 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 391 if_printf(ifp, "only 1 vap supported\n"); 392 return NULL; 393 } 394 if (opmode == IEEE80211_M_STA) 395 flags |= IEEE80211_CLONE_NOBEACONS; 396 break; 397 case IEEE80211_M_WDS: 398 if (TAILQ_EMPTY(&ic->ic_vaps) || 399 ic->ic_opmode != IEEE80211_M_HOSTAP) { 400 if_printf(ifp, "wds only supported in ap mode\n"); 401 return NULL; 402 } 403 /* 404 * Silently remove any request for a unique 405 * bssid; WDS vap's always share the local 406 * mac address. 407 */ 408 flags &= ~IEEE80211_CLONE_BSSID; 409 break; 410 default: 411 if_printf(ifp, "unknown opmode %d\n", opmode); 412 return NULL; 413 } 414 rvp = (struct rt2560_vap *) kmalloc(sizeof(struct rt2560_vap), 415 M_80211_VAP, M_INTWAIT | M_ZERO); 416 if (rvp == NULL) 417 return NULL; 418 vap = &rvp->ral_vap; 419 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 420 421 /* override state transition machine */ 422 rvp->ral_newstate = vap->iv_newstate; 423 vap->iv_newstate = rt2560_newstate; 424 vap->iv_update_beacon = rt2560_beacon_update; 425 426 ieee80211_ratectl_init(vap); 427 /* complete setup */ 428 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 429 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 430 ic->ic_opmode = opmode; 431 return vap; 432 } 433 434 static void 435 rt2560_vap_delete(struct ieee80211vap *vap) 436 { 437 struct rt2560_vap *rvp = RT2560_VAP(vap); 438 439 ieee80211_ratectl_deinit(vap); 440 ieee80211_vap_detach(vap); 441 kfree(rvp, M_80211_VAP); 442 } 443 444 void 445 rt2560_resume(void *xsc) 446 { 447 struct rt2560_softc *sc = xsc; 448 struct ifnet *ifp = sc->sc_ifp; 449 450 if (ifp->if_flags & IFF_UP) 451 rt2560_init(sc); 452 } 453 454 static void 455 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 456 { 457 if (error != 0) 458 return; 459 460 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 461 462 *(bus_addr_t *)arg = segs[0].ds_addr; 463 } 464 465 static int 466 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 467 int count) 468 { 469 int i, error; 470 471 ring->count = count; 472 ring->queued = 0; 473 ring->cur = ring->next = 0; 474 ring->cur_encrypt = ring->next_encrypt = 0; 475 476 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 477 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 478 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 479 0, &ring->desc_dmat); 480 if (error != 0) { 481 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 482 goto fail; 483 } 484 485 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 486 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 487 if (error != 0) { 488 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 489 goto fail; 490 } 491 492 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 493 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 494 0); 495 if (error != 0) { 496 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 497 goto fail; 498 } 499 500 ring->data = kmalloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 501 M_INTWAIT | M_ZERO); 502 if (ring->data == NULL) { 503 device_printf(sc->sc_dev, "could not allocate soft data\n"); 504 error = ENOMEM; 505 goto fail; 506 } 507 508 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 509 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 510 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, &ring->data_dmat); 511 if (error != 0) { 512 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 513 goto fail; 514 } 515 516 for (i = 0; i < count; i++) { 517 error = bus_dmamap_create(ring->data_dmat, 0, 518 &ring->data[i].map); 519 if (error != 0) { 520 device_printf(sc->sc_dev, "could not create DMA map\n"); 521 goto fail; 522 } 523 } 524 525 return 0; 526 527 fail: rt2560_free_tx_ring(sc, ring); 528 return error; 529 } 530 531 static void 532 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 533 { 534 struct rt2560_tx_desc *desc; 535 struct rt2560_tx_data *data; 536 int i; 537 538 for (i = 0; i < ring->count; i++) { 539 desc = &ring->desc[i]; 540 data = &ring->data[i]; 541 542 if (data->m != NULL) { 543 bus_dmamap_sync(ring->data_dmat, data->map, 544 BUS_DMASYNC_POSTWRITE); 545 bus_dmamap_unload(ring->data_dmat, data->map); 546 m_freem(data->m); 547 data->m = NULL; 548 } 549 550 if (data->ni != NULL) { 551 ieee80211_free_node(data->ni); 552 data->ni = NULL; 553 } 554 555 desc->flags = 0; 556 } 557 558 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 559 560 ring->queued = 0; 561 ring->cur = ring->next = 0; 562 ring->cur_encrypt = ring->next_encrypt = 0; 563 } 564 565 static void 566 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 567 { 568 struct rt2560_tx_data *data; 569 int i; 570 571 if (ring->desc != NULL) { 572 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 573 BUS_DMASYNC_POSTWRITE); 574 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 575 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 576 } 577 578 if (ring->desc_dmat != NULL) 579 bus_dma_tag_destroy(ring->desc_dmat); 580 581 if (ring->data != NULL) { 582 for (i = 0; i < ring->count; i++) { 583 data = &ring->data[i]; 584 585 if (data->m != NULL) { 586 bus_dmamap_sync(ring->data_dmat, data->map, 587 BUS_DMASYNC_POSTWRITE); 588 bus_dmamap_unload(ring->data_dmat, data->map); 589 m_freem(data->m); 590 } 591 592 if (data->ni != NULL) 593 ieee80211_free_node(data->ni); 594 595 if (data->map != NULL) 596 bus_dmamap_destroy(ring->data_dmat, data->map); 597 } 598 599 kfree(ring->data, M_DEVBUF); 600 } 601 602 if (ring->data_dmat != NULL) 603 bus_dma_tag_destroy(ring->data_dmat); 604 } 605 606 static int 607 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 608 int count) 609 { 610 struct rt2560_rx_desc *desc; 611 struct rt2560_rx_data *data; 612 bus_addr_t physaddr; 613 int i, error; 614 615 ring->count = count; 616 ring->cur = ring->next = 0; 617 ring->cur_decrypt = 0; 618 619 error = bus_dma_tag_create(ring->desc_dmat, 4, 0, 620 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 621 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 622 0, &ring->desc_dmat); 623 if (error != 0) { 624 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 625 goto fail; 626 } 627 628 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 629 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 630 if (error != 0) { 631 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 632 goto fail; 633 } 634 635 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 636 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 637 0); 638 if (error != 0) { 639 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 640 goto fail; 641 } 642 643 ring->data = kmalloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 644 M_INTWAIT | M_ZERO); 645 if (ring->data == NULL) { 646 device_printf(sc->sc_dev, "could not allocate soft data\n"); 647 error = ENOMEM; 648 goto fail; 649 } 650 651 /* 652 * Pre-allocate Rx buffers and populate Rx ring. 653 */ 654 error = bus_dma_tag_create(ring->data_dmat, 1, 0, 655 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 656 1, MCLBYTES, 0, &ring->data_dmat); 657 if (error != 0) { 658 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 659 goto fail; 660 } 661 662 for (i = 0; i < count; i++) { 663 desc = &sc->rxq.desc[i]; 664 data = &sc->rxq.data[i]; 665 666 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 667 if (error != 0) { 668 device_printf(sc->sc_dev, "could not create DMA map\n"); 669 goto fail; 670 } 671 672 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 673 if (data->m == NULL) { 674 device_printf(sc->sc_dev, 675 "could not allocate rx mbuf\n"); 676 error = ENOMEM; 677 goto fail; 678 } 679 680 error = bus_dmamap_load(ring->data_dmat, data->map, 681 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 682 &physaddr, 0); 683 if (error != 0) { 684 device_printf(sc->sc_dev, 685 "could not load rx buf DMA map"); 686 goto fail; 687 } 688 689 desc->flags = htole32(RT2560_RX_BUSY); 690 desc->physaddr = htole32(physaddr); 691 } 692 693 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 694 695 return 0; 696 697 fail: rt2560_free_rx_ring(sc, ring); 698 return error; 699 } 700 701 static void 702 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 703 { 704 int i; 705 706 for (i = 0; i < ring->count; i++) { 707 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 708 ring->data[i].drop = 0; 709 } 710 711 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 712 713 ring->cur = ring->next = 0; 714 ring->cur_decrypt = 0; 715 } 716 717 static void 718 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 719 { 720 struct rt2560_rx_data *data; 721 int i; 722 723 if (ring->desc != NULL) { 724 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 725 BUS_DMASYNC_POSTWRITE); 726 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 727 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 728 } 729 730 if (ring->desc_dmat != NULL) 731 bus_dma_tag_destroy(ring->desc_dmat); 732 733 if (ring->data != NULL) { 734 for (i = 0; i < ring->count; i++) { 735 data = &ring->data[i]; 736 737 if (data->m != NULL) { 738 bus_dmamap_sync(ring->data_dmat, data->map, 739 BUS_DMASYNC_POSTREAD); 740 bus_dmamap_unload(ring->data_dmat, data->map); 741 m_freem(data->m); 742 } 743 744 if (data->map != NULL) 745 bus_dmamap_destroy(ring->data_dmat, data->map); 746 } 747 748 kfree(ring->data, M_DEVBUF); 749 } 750 751 if (ring->data_dmat != NULL) 752 bus_dma_tag_destroy(ring->data_dmat); 753 } 754 755 static int 756 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 757 { 758 struct rt2560_vap *rvp = RT2560_VAP(vap); 759 struct ifnet *ifp = vap->iv_ic->ic_ifp; 760 struct rt2560_softc *sc = ifp->if_softc; 761 int error; 762 763 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 764 /* abort TSF synchronization */ 765 RAL_WRITE(sc, RT2560_CSR14, 0); 766 767 /* turn association led off */ 768 rt2560_update_led(sc, 0, 0); 769 } 770 771 error = rvp->ral_newstate(vap, nstate, arg); 772 773 if (error == 0 && nstate == IEEE80211_S_RUN) { 774 struct ieee80211_node *ni = vap->iv_bss; 775 struct mbuf *m; 776 777 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 778 rt2560_update_plcp(sc); 779 rt2560_set_basicrates(sc); 780 rt2560_set_bssid(sc, ni->ni_bssid); 781 } 782 783 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 784 vap->iv_opmode == IEEE80211_M_IBSS || 785 vap->iv_opmode == IEEE80211_M_MBSS) { 786 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 787 if (m == NULL) { 788 if_printf(ifp, "could not allocate beacon\n"); 789 return ENOBUFS; 790 } 791 ieee80211_ref_node(ni); 792 error = rt2560_tx_bcn(sc, m, ni); 793 if (error != 0) 794 return error; 795 } 796 797 /* turn assocation led on */ 798 rt2560_update_led(sc, 1, 0); 799 800 if (vap->iv_opmode != IEEE80211_M_MONITOR) 801 rt2560_enable_tsf_sync(sc); 802 else 803 rt2560_enable_tsf(sc); 804 } 805 return error; 806 } 807 808 /* 809 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 810 * 93C66). 811 */ 812 static uint16_t 813 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 814 { 815 uint32_t tmp; 816 uint16_t val; 817 int n; 818 819 /* clock C once before the first command */ 820 RT2560_EEPROM_CTL(sc, 0); 821 822 RT2560_EEPROM_CTL(sc, RT2560_S); 823 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 824 RT2560_EEPROM_CTL(sc, RT2560_S); 825 826 /* write start bit (1) */ 827 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 828 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 829 830 /* write READ opcode (10) */ 831 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 832 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 833 RT2560_EEPROM_CTL(sc, RT2560_S); 834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 835 836 /* write address (A5-A0 or A7-A0) */ 837 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 838 for (; n >= 0; n--) { 839 RT2560_EEPROM_CTL(sc, RT2560_S | 840 (((addr >> n) & 1) << RT2560_SHIFT_D)); 841 RT2560_EEPROM_CTL(sc, RT2560_S | 842 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 843 } 844 845 RT2560_EEPROM_CTL(sc, RT2560_S); 846 847 /* read data Q15-Q0 */ 848 val = 0; 849 for (n = 15; n >= 0; n--) { 850 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 851 tmp = RAL_READ(sc, RT2560_CSR21); 852 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 853 RT2560_EEPROM_CTL(sc, RT2560_S); 854 } 855 856 RT2560_EEPROM_CTL(sc, 0); 857 858 /* clear Chip Select and clock C */ 859 RT2560_EEPROM_CTL(sc, RT2560_S); 860 RT2560_EEPROM_CTL(sc, 0); 861 RT2560_EEPROM_CTL(sc, RT2560_C); 862 863 return val; 864 } 865 866 /* 867 * Some frames were processed by the hardware cipher engine and are ready for 868 * transmission. 869 */ 870 static void 871 rt2560_encryption_intr(struct rt2560_softc *sc) 872 { 873 struct rt2560_tx_desc *desc; 874 int hw; 875 876 /* retrieve last descriptor index processed by cipher engine */ 877 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 878 hw /= RT2560_TX_DESC_SIZE; 879 880 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 881 BUS_DMASYNC_POSTREAD); 882 883 while (sc->txq.next_encrypt != hw) { 884 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 885 kprintf("hw encrypt %d, cur_encrypt %d\n", hw, 886 sc->txq.cur_encrypt); 887 break; 888 } 889 890 desc = &sc->txq.desc[sc->txq.next_encrypt]; 891 892 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 893 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 894 break; 895 896 /* for TKIP, swap eiv field to fix a bug in ASIC */ 897 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 898 RT2560_TX_CIPHER_TKIP) 899 desc->eiv = bswap32(desc->eiv); 900 901 /* mark the frame ready for transmission */ 902 desc->flags |= htole32(RT2560_TX_VALID); 903 desc->flags |= htole32(RT2560_TX_BUSY); 904 905 DPRINTFN(sc, 15, "encryption done idx=%u\n", 906 sc->txq.next_encrypt); 907 908 sc->txq.next_encrypt = 909 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 910 } 911 912 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 913 BUS_DMASYNC_PREWRITE); 914 915 /* kick Tx */ 916 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 917 } 918 919 static void 920 rt2560_tx_intr(struct rt2560_softc *sc) 921 { 922 struct ifnet *ifp = sc->sc_ifp; 923 struct rt2560_tx_desc *desc; 924 struct rt2560_tx_data *data; 925 struct mbuf *m; 926 uint32_t flags; 927 int retrycnt; 928 struct ieee80211vap *vap; 929 struct ieee80211_node *ni; 930 931 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 932 BUS_DMASYNC_POSTREAD); 933 934 for (;;) { 935 desc = &sc->txq.desc[sc->txq.next]; 936 data = &sc->txq.data[sc->txq.next]; 937 938 flags = le32toh(desc->flags); 939 if ((flags & RT2560_TX_BUSY) || 940 (flags & RT2560_TX_CIPHER_BUSY) || 941 !(flags & RT2560_TX_VALID)) 942 break; 943 944 m = data->m; 945 ni = data->ni; 946 vap = ni->ni_vap; 947 948 switch (flags & RT2560_TX_RESULT_MASK) { 949 case RT2560_TX_SUCCESS: 950 retrycnt = 0; 951 952 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 953 if (data->rix != IEEE80211_FIXED_RATE_NONE) 954 ieee80211_ratectl_tx_complete(vap, ni, 955 IEEE80211_RATECTL_TX_SUCCESS, 956 &retrycnt, NULL); 957 IFNET_STAT_INC(ifp, opackets, 1); 958 break; 959 960 case RT2560_TX_SUCCESS_RETRY: 961 retrycnt = RT2560_TX_RETRYCNT(flags); 962 963 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 964 retrycnt); 965 if (data->rix != IEEE80211_FIXED_RATE_NONE) 966 ieee80211_ratectl_tx_complete(vap, ni, 967 IEEE80211_RATECTL_TX_SUCCESS, 968 &retrycnt, NULL); 969 IFNET_STAT_INC(ifp, opackets, 1); 970 break; 971 972 case RT2560_TX_FAIL_RETRY: 973 retrycnt = RT2560_TX_RETRYCNT(flags); 974 975 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 976 retrycnt); 977 if (data->rix != IEEE80211_FIXED_RATE_NONE) 978 ieee80211_ratectl_tx_complete(vap, ni, 979 IEEE80211_RATECTL_TX_FAILURE, 980 &retrycnt, NULL); 981 IFNET_STAT_INC(ifp, oerrors, 1); 982 break; 983 984 case RT2560_TX_FAIL_INVALID: 985 case RT2560_TX_FAIL_OTHER: 986 default: 987 device_printf(sc->sc_dev, "sending data frame failed " 988 "0x%08x\n", flags); 989 IFNET_STAT_INC(ifp, oerrors, 1); 990 } 991 992 bus_dmamap_sync(sc->txq.data_dmat, data->map, 993 BUS_DMASYNC_POSTWRITE); 994 bus_dmamap_unload(sc->txq.data_dmat, data->map); 995 m_freem(m); 996 data->m = NULL; 997 ieee80211_free_node(data->ni); 998 data->ni = NULL; 999 ni = NULL; 1000 1001 /* descriptor is no longer valid */ 1002 desc->flags &= ~htole32(RT2560_TX_VALID); 1003 1004 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1005 1006 sc->txq.queued--; 1007 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1008 } 1009 1010 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1011 BUS_DMASYNC_PREWRITE); 1012 1013 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1014 sc->sc_tx_timer = 0; 1015 1016 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1017 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1018 if ((sc->sc_flags & 1019 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1020 ifq_clr_oactive(&ifp->if_snd); 1021 rt2560_start_locked(ifp); 1022 } 1023 } 1024 1025 static void 1026 rt2560_prio_intr(struct rt2560_softc *sc) 1027 { 1028 struct ifnet *ifp = sc->sc_ifp; 1029 struct rt2560_tx_desc *desc; 1030 struct rt2560_tx_data *data; 1031 struct ieee80211_node *ni; 1032 struct mbuf *m; 1033 int flags; 1034 1035 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1036 BUS_DMASYNC_POSTREAD); 1037 1038 for (;;) { 1039 desc = &sc->prioq.desc[sc->prioq.next]; 1040 data = &sc->prioq.data[sc->prioq.next]; 1041 1042 flags = le32toh(desc->flags); 1043 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1044 break; 1045 1046 switch (flags & RT2560_TX_RESULT_MASK) { 1047 case RT2560_TX_SUCCESS: 1048 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1049 break; 1050 1051 case RT2560_TX_SUCCESS_RETRY: 1052 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1053 (flags >> 5) & 0x7); 1054 break; 1055 1056 case RT2560_TX_FAIL_RETRY: 1057 DPRINTFN(sc, 9, "%s\n", 1058 "sending mgt frame failed (too much retries)"); 1059 break; 1060 1061 case RT2560_TX_FAIL_INVALID: 1062 case RT2560_TX_FAIL_OTHER: 1063 default: 1064 device_printf(sc->sc_dev, "sending mgt frame failed " 1065 "0x%08x\n", flags); 1066 break; 1067 } 1068 1069 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1070 BUS_DMASYNC_POSTWRITE); 1071 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1072 1073 m = data->m; 1074 data->m = NULL; 1075 ni = data->ni; 1076 data->ni = NULL; 1077 1078 /* descriptor is no longer valid */ 1079 desc->flags &= ~htole32(RT2560_TX_VALID); 1080 1081 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1082 1083 sc->prioq.queued--; 1084 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1085 1086 if (m->m_flags & M_TXCB) 1087 ieee80211_process_callback(ni, m, 1088 (flags & RT2560_TX_RESULT_MASK) &~ 1089 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1090 m_freem(m); 1091 ieee80211_free_node(ni); 1092 } 1093 1094 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1095 BUS_DMASYNC_PREWRITE); 1096 1097 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1098 sc->sc_tx_timer = 0; 1099 1100 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1101 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1102 if ((sc->sc_flags & 1103 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1104 ifq_clr_oactive(&ifp->if_snd); 1105 rt2560_start_locked(ifp); 1106 } 1107 } 1108 1109 /* 1110 * Some frames were processed by the hardware cipher engine and are ready for 1111 * handoff to the IEEE802.11 layer. 1112 */ 1113 static void 1114 rt2560_decryption_intr(struct rt2560_softc *sc) 1115 { 1116 struct ifnet *ifp = sc->sc_ifp; 1117 struct ieee80211com *ic = ifp->if_l2com; 1118 struct rt2560_rx_desc *desc; 1119 struct rt2560_rx_data *data; 1120 bus_addr_t physaddr; 1121 struct ieee80211_frame *wh; 1122 struct ieee80211_node *ni; 1123 struct mbuf *mnew, *m; 1124 int hw, error; 1125 int8_t rssi, nf; 1126 1127 /* retrieve last decriptor index processed by cipher engine */ 1128 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1129 hw /= RT2560_RX_DESC_SIZE; 1130 1131 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1132 BUS_DMASYNC_POSTREAD); 1133 1134 for (; sc->rxq.cur_decrypt != hw;) { 1135 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1136 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1137 1138 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1139 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1140 break; 1141 1142 if (data->drop) { 1143 IFNET_STAT_INC(ifp, ierrors, 1); 1144 goto skip; 1145 } 1146 1147 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1148 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1149 IFNET_STAT_INC(ifp, ierrors, 1); 1150 goto skip; 1151 } 1152 1153 /* 1154 * Try to allocate a new mbuf for this ring element and load it 1155 * before processing the current mbuf. If the ring element 1156 * cannot be loaded, drop the received packet and reuse the old 1157 * mbuf. In the unlikely case that the old mbuf can't be 1158 * reloaded either, explicitly panic. 1159 */ 1160 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 1161 if (mnew == NULL) { 1162 IFNET_STAT_INC(ifp, ierrors, 1); 1163 goto skip; 1164 } 1165 1166 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1167 BUS_DMASYNC_POSTREAD); 1168 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1169 1170 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1171 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1172 &physaddr, 0); 1173 if (error != 0) { 1174 m_freem(mnew); 1175 1176 /* try to reload the old mbuf */ 1177 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1178 mtod(data->m, void *), MCLBYTES, 1179 rt2560_dma_map_addr, &physaddr, 0); 1180 if (error != 0) { 1181 /* very unlikely that it will fail... */ 1182 panic("%s: could not load old rx mbuf", 1183 device_get_name(sc->sc_dev)); 1184 } 1185 IFNET_STAT_INC(ifp, ierrors, 1); 1186 goto skip; 1187 } 1188 1189 /* 1190 * New mbuf successfully loaded, update Rx ring and continue 1191 * processing. 1192 */ 1193 m = data->m; 1194 data->m = mnew; 1195 desc->physaddr = htole32(physaddr); 1196 1197 /* finalize mbuf */ 1198 m->m_pkthdr.rcvif = ifp; 1199 m->m_pkthdr.len = m->m_len = 1200 (le32toh(desc->flags) >> 16) & 0xfff; 1201 1202 rssi = RT2560_RSSI(sc, desc->rssi); 1203 nf = RT2560_NOISE_FLOOR; 1204 if (ieee80211_radiotap_active(ic)) { 1205 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1206 uint32_t tsf_lo, tsf_hi; 1207 1208 /* get timestamp (low and high 32 bits) */ 1209 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1210 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1211 1212 tap->wr_tsf = 1213 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1214 tap->wr_flags = 0; 1215 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1216 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1217 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1218 tap->wr_antenna = sc->rx_ant; 1219 tap->wr_antsignal = nf + rssi; 1220 tap->wr_antnoise = nf; 1221 } 1222 1223 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1224 wh = mtod(m, struct ieee80211_frame *); 1225 ni = ieee80211_find_rxnode(ic, 1226 (struct ieee80211_frame_min *)wh); 1227 if (ni != NULL) { 1228 (void) ieee80211_input(ni, m, rssi, nf); 1229 ieee80211_free_node(ni); 1230 } else 1231 (void) ieee80211_input_all(ic, m, rssi, nf); 1232 1233 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1234 skip: desc->flags = htole32(RT2560_RX_BUSY); 1235 1236 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1237 1238 sc->rxq.cur_decrypt = 1239 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1240 } 1241 1242 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1243 BUS_DMASYNC_PREWRITE); 1244 } 1245 1246 /* 1247 * Some frames were received. Pass them to the hardware cipher engine before 1248 * sending them to the 802.11 layer. 1249 */ 1250 static void 1251 rt2560_rx_intr(struct rt2560_softc *sc) 1252 { 1253 struct rt2560_rx_desc *desc; 1254 struct rt2560_rx_data *data; 1255 1256 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1257 BUS_DMASYNC_POSTREAD); 1258 1259 for (;;) { 1260 desc = &sc->rxq.desc[sc->rxq.cur]; 1261 data = &sc->rxq.data[sc->rxq.cur]; 1262 1263 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1264 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1265 break; 1266 1267 data->drop = 0; 1268 1269 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1270 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1271 /* 1272 * This should not happen since we did not request 1273 * to receive those frames when we filled RXCSR0. 1274 */ 1275 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1276 le32toh(desc->flags)); 1277 data->drop = 1; 1278 } 1279 1280 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1281 DPRINTFN(sc, 5, "%s\n", "bad length"); 1282 data->drop = 1; 1283 } 1284 1285 /* mark the frame for decryption */ 1286 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1287 1288 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1289 1290 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1291 } 1292 1293 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1294 BUS_DMASYNC_PREWRITE); 1295 1296 /* kick decrypt */ 1297 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1298 } 1299 1300 static void 1301 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1302 { 1303 struct rt2560_vap *rvp = RT2560_VAP(vap); 1304 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1305 1306 setbit(bo->bo_flags, item); 1307 } 1308 1309 /* 1310 * This function is called periodically in IBSS mode when a new beacon must be 1311 * sent out. 1312 */ 1313 static void 1314 rt2560_beacon_expire(struct rt2560_softc *sc) 1315 { 1316 struct ifnet *ifp = sc->sc_ifp; 1317 struct ieee80211com *ic = ifp->if_l2com; 1318 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1319 struct rt2560_vap *rvp = RT2560_VAP(vap); 1320 struct rt2560_tx_data *data; 1321 1322 if (ic->ic_opmode != IEEE80211_M_IBSS && 1323 ic->ic_opmode != IEEE80211_M_HOSTAP && 1324 ic->ic_opmode != IEEE80211_M_MBSS) 1325 return; 1326 1327 data = &sc->bcnq.data[sc->bcnq.next]; 1328 /* 1329 * Don't send beacon if bsschan isn't set 1330 */ 1331 if (data->ni == NULL) 1332 return; 1333 1334 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1335 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1336 1337 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1338 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1339 1340 rt2560_tx_bcn(sc, data->m, data->ni); 1341 1342 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1343 1344 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1345 } 1346 1347 /* ARGSUSED */ 1348 static void 1349 rt2560_wakeup_expire(struct rt2560_softc *sc) 1350 { 1351 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1352 } 1353 1354 void 1355 rt2560_intr(void *arg) 1356 { 1357 struct rt2560_softc *sc = arg; 1358 struct ifnet *ifp = sc->sc_ifp; 1359 uint32_t r; 1360 1361 /* disable interrupts */ 1362 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1363 1364 /* don't re-enable interrupts if we're shutting down */ 1365 if (!(ifp->if_flags & IFF_RUNNING)) { 1366 return; 1367 } 1368 1369 r = RAL_READ(sc, RT2560_CSR7); 1370 RAL_WRITE(sc, RT2560_CSR7, r); 1371 1372 if (r & RT2560_BEACON_EXPIRE) 1373 rt2560_beacon_expire(sc); 1374 1375 if (r & RT2560_WAKEUP_EXPIRE) 1376 rt2560_wakeup_expire(sc); 1377 1378 if (r & RT2560_ENCRYPTION_DONE) 1379 rt2560_encryption_intr(sc); 1380 1381 if (r & RT2560_TX_DONE) 1382 rt2560_tx_intr(sc); 1383 1384 if (r & RT2560_PRIO_DONE) 1385 rt2560_prio_intr(sc); 1386 1387 if (r & RT2560_DECRYPTION_DONE) 1388 rt2560_decryption_intr(sc); 1389 1390 if (r & RT2560_RX_DONE) { 1391 rt2560_rx_intr(sc); 1392 rt2560_encryption_intr(sc); 1393 } 1394 1395 /* re-enable interrupts */ 1396 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1397 } 1398 1399 #define RAL_SIFS 10 /* us */ 1400 1401 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1402 1403 static uint8_t 1404 rt2560_plcp_signal(int rate) 1405 { 1406 switch (rate) { 1407 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1408 case 12: return 0xb; 1409 case 18: return 0xf; 1410 case 24: return 0xa; 1411 case 36: return 0xe; 1412 case 48: return 0x9; 1413 case 72: return 0xd; 1414 case 96: return 0x8; 1415 case 108: return 0xc; 1416 1417 /* CCK rates (NB: not IEEE std, device-specific) */ 1418 case 2: return 0x0; 1419 case 4: return 0x1; 1420 case 11: return 0x2; 1421 case 22: return 0x3; 1422 } 1423 return 0xff; /* XXX unsupported/unknown rate */ 1424 } 1425 1426 static void 1427 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1428 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1429 { 1430 struct ifnet *ifp = sc->sc_ifp; 1431 struct ieee80211com *ic = ifp->if_l2com; 1432 uint16_t plcp_length; 1433 int remainder; 1434 1435 desc->flags = htole32(flags); 1436 desc->flags |= htole32(len << 16); 1437 1438 desc->physaddr = htole32(physaddr); 1439 desc->wme = htole16( 1440 RT2560_AIFSN(2) | 1441 RT2560_LOGCWMIN(3) | 1442 RT2560_LOGCWMAX(8)); 1443 1444 /* setup PLCP fields */ 1445 desc->plcp_signal = rt2560_plcp_signal(rate); 1446 desc->plcp_service = 4; 1447 1448 len += IEEE80211_CRC_LEN; 1449 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1450 desc->flags |= htole32(RT2560_TX_OFDM); 1451 1452 plcp_length = len & 0xfff; 1453 desc->plcp_length_hi = plcp_length >> 6; 1454 desc->plcp_length_lo = plcp_length & 0x3f; 1455 } else { 1456 plcp_length = (16 * len + rate - 1) / rate; 1457 if (rate == 22) { 1458 remainder = (16 * len) % 22; 1459 if (remainder != 0 && remainder < 7) 1460 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1461 } 1462 desc->plcp_length_hi = plcp_length >> 8; 1463 desc->plcp_length_lo = plcp_length & 0xff; 1464 1465 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1466 desc->plcp_signal |= 0x08; 1467 } 1468 1469 if (!encrypt) 1470 desc->flags |= htole32(RT2560_TX_VALID); 1471 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1472 : htole32(RT2560_TX_BUSY); 1473 } 1474 1475 static int 1476 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1477 struct ieee80211_node *ni) 1478 { 1479 struct ieee80211vap *vap = ni->ni_vap; 1480 struct rt2560_tx_desc *desc; 1481 struct rt2560_tx_data *data; 1482 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1483 int nsegs, rate, error; 1484 1485 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1486 data = &sc->bcnq.data[sc->bcnq.cur]; 1487 1488 /* XXX maybe a separate beacon rate? */ 1489 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1490 1491 error = bus_dmamap_load_mbuf_segment(sc->bcnq.data_dmat, data->map, m0, 1492 segs, 1, &nsegs, BUS_DMA_NOWAIT); 1493 if (error != 0) { 1494 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1495 error); 1496 m_freem(m0); 1497 return error; 1498 } 1499 1500 if (ieee80211_radiotap_active_vap(vap)) { 1501 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1502 1503 tap->wt_flags = 0; 1504 tap->wt_rate = rate; 1505 tap->wt_antenna = sc->tx_ant; 1506 1507 ieee80211_radiotap_tx(vap, m0); 1508 } 1509 1510 data->m = m0; 1511 data->ni = ni; 1512 1513 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1514 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1515 1516 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1517 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1518 1519 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1520 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1521 BUS_DMASYNC_PREWRITE); 1522 1523 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1524 1525 return 0; 1526 } 1527 1528 static int 1529 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1530 struct ieee80211_node *ni) 1531 { 1532 struct ieee80211vap *vap = ni->ni_vap; 1533 struct ieee80211com *ic = ni->ni_ic; 1534 struct rt2560_tx_desc *desc; 1535 struct rt2560_tx_data *data; 1536 struct ieee80211_frame *wh; 1537 struct ieee80211_key *k; 1538 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1539 uint16_t dur; 1540 uint32_t flags = 0; 1541 int nsegs, rate, error; 1542 1543 desc = &sc->prioq.desc[sc->prioq.cur]; 1544 data = &sc->prioq.data[sc->prioq.cur]; 1545 1546 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1547 1548 wh = mtod(m0, struct ieee80211_frame *); 1549 1550 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1551 k = ieee80211_crypto_encap(ni, m0); 1552 if (k == NULL) { 1553 m_freem(m0); 1554 return ENOBUFS; 1555 } 1556 } 1557 1558 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1559 segs, 1, &nsegs, 0); 1560 if (error != 0) { 1561 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1562 error); 1563 m_freem(m0); 1564 return error; 1565 } 1566 1567 if (ieee80211_radiotap_active_vap(vap)) { 1568 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1569 1570 tap->wt_flags = 0; 1571 tap->wt_rate = rate; 1572 tap->wt_antenna = sc->tx_ant; 1573 1574 ieee80211_radiotap_tx(vap, m0); 1575 } 1576 1577 data->m = m0; 1578 data->ni = ni; 1579 /* management frames are not taken into account for amrr */ 1580 data->rix = IEEE80211_FIXED_RATE_NONE; 1581 1582 wh = mtod(m0, struct ieee80211_frame *); 1583 1584 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1585 flags |= RT2560_TX_ACK; 1586 1587 dur = ieee80211_ack_duration(ic->ic_rt, 1588 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1589 *(uint16_t *)wh->i_dur = htole16(dur); 1590 1591 /* tell hardware to add timestamp for probe responses */ 1592 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1593 IEEE80211_FC0_TYPE_MGT && 1594 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1595 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1596 flags |= RT2560_TX_TIMESTAMP; 1597 } 1598 1599 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1600 segs->ds_addr); 1601 1602 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1603 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1604 BUS_DMASYNC_PREWRITE); 1605 1606 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1607 m0->m_pkthdr.len, sc->prioq.cur, rate); 1608 1609 /* kick prio */ 1610 sc->prioq.queued++; 1611 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1612 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1613 1614 return 0; 1615 } 1616 1617 static int 1618 rt2560_sendprot(struct rt2560_softc *sc, 1619 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1620 { 1621 struct ieee80211com *ic = ni->ni_ic; 1622 const struct ieee80211_frame *wh; 1623 struct rt2560_tx_desc *desc; 1624 struct rt2560_tx_data *data; 1625 struct mbuf *mprot; 1626 int protrate, pktlen, flags, isshort, error; 1627 uint16_t dur; 1628 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1629 int nsegs; 1630 1631 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1632 ("protection %d", prot)); 1633 1634 wh = mtod(m, const struct ieee80211_frame *); 1635 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1636 1637 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1638 ieee80211_ack_rate(ic->ic_rt, rate); 1639 1640 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1641 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1642 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1643 flags = RT2560_TX_MORE_FRAG; 1644 if (prot == IEEE80211_PROT_RTSCTS) { 1645 /* NB: CTS is the same size as an ACK */ 1646 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1647 flags |= RT2560_TX_ACK; 1648 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1649 } else { 1650 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1651 } 1652 if (mprot == NULL) { 1653 /* XXX stat + msg */ 1654 return ENOBUFS; 1655 } 1656 1657 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1658 data = &sc->txq.data[sc->txq.cur_encrypt]; 1659 1660 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1661 mprot, segs, 1, &nsegs, 0); 1662 if (error != 0) { 1663 device_printf(sc->sc_dev, 1664 "could not map mbuf (error %d)\n", error); 1665 m_freem(mprot); 1666 return error; 1667 } 1668 1669 data->m = mprot; 1670 data->ni = ieee80211_ref_node(ni); 1671 /* ctl frames are not taken into account for amrr */ 1672 data->rix = IEEE80211_FIXED_RATE_NONE; 1673 1674 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1675 segs->ds_addr); 1676 1677 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1678 BUS_DMASYNC_PREWRITE); 1679 1680 sc->txq.queued++; 1681 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1682 1683 return 0; 1684 } 1685 1686 static int 1687 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1688 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1689 { 1690 struct ieee80211vap *vap = ni->ni_vap; 1691 struct ieee80211com *ic = ni->ni_ic; 1692 struct rt2560_tx_desc *desc; 1693 struct rt2560_tx_data *data; 1694 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1695 uint32_t flags; 1696 int nsegs, rate, error; 1697 1698 desc = &sc->prioq.desc[sc->prioq.cur]; 1699 data = &sc->prioq.data[sc->prioq.cur]; 1700 1701 rate = params->ibp_rate0; 1702 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1703 /* XXX fall back to mcast/mgmt rate? */ 1704 m_freem(m0); 1705 return EINVAL; 1706 } 1707 1708 flags = 0; 1709 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1710 flags |= RT2560_TX_ACK; 1711 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1712 error = rt2560_sendprot(sc, m0, ni, 1713 params->ibp_flags & IEEE80211_BPF_RTS ? 1714 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1715 rate); 1716 if (error) { 1717 m_freem(m0); 1718 return error; 1719 } 1720 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1721 } 1722 1723 error = bus_dmamap_load_mbuf_segment(sc->prioq.data_dmat, data->map, m0, 1724 segs, 1, &nsegs, 0); 1725 if (error != 0) { 1726 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1727 error); 1728 m_freem(m0); 1729 return error; 1730 } 1731 1732 if (ieee80211_radiotap_active_vap(vap)) { 1733 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1734 1735 tap->wt_flags = 0; 1736 tap->wt_rate = rate; 1737 tap->wt_antenna = sc->tx_ant; 1738 1739 ieee80211_radiotap_tx(ni->ni_vap, m0); 1740 } 1741 1742 data->m = m0; 1743 data->ni = ni; 1744 1745 /* XXX need to setup descriptor ourself */ 1746 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1747 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1748 segs->ds_addr); 1749 1750 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1751 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1752 BUS_DMASYNC_PREWRITE); 1753 1754 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1755 m0->m_pkthdr.len, sc->prioq.cur, rate); 1756 1757 /* kick prio */ 1758 sc->prioq.queued++; 1759 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1760 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1761 1762 return 0; 1763 } 1764 1765 static int 1766 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1767 struct ieee80211_node *ni) 1768 { 1769 struct ieee80211vap *vap = ni->ni_vap; 1770 struct ieee80211com *ic = ni->ni_ic; 1771 struct rt2560_tx_desc *desc; 1772 struct rt2560_tx_data *data; 1773 struct ieee80211_frame *wh; 1774 const struct ieee80211_txparam *tp; 1775 struct ieee80211_key *k; 1776 struct mbuf *mnew; 1777 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1778 uint16_t dur; 1779 uint32_t flags; 1780 int nsegs, rate, error; 1781 1782 wh = mtod(m0, struct ieee80211_frame *); 1783 1784 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1785 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1786 rate = tp->mcastrate; 1787 } else if (m0->m_flags & M_EAPOL) { 1788 rate = tp->mgmtrate; 1789 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1790 rate = tp->ucastrate; 1791 } else { 1792 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1793 rate = ni->ni_txrate; 1794 } 1795 1796 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1797 k = ieee80211_crypto_encap(ni, m0); 1798 if (k == NULL) { 1799 m_freem(m0); 1800 return ENOBUFS; 1801 } 1802 1803 /* packet header may have moved, reset our local pointer */ 1804 wh = mtod(m0, struct ieee80211_frame *); 1805 } 1806 1807 flags = 0; 1808 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1809 int prot = IEEE80211_PROT_NONE; 1810 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1811 prot = IEEE80211_PROT_RTSCTS; 1812 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1813 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1814 prot = ic->ic_protmode; 1815 if (prot != IEEE80211_PROT_NONE) { 1816 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1817 if (error) { 1818 m_freem(m0); 1819 return error; 1820 } 1821 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1822 } 1823 } 1824 1825 data = &sc->txq.data[sc->txq.cur_encrypt]; 1826 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1827 1828 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, m0, 1829 segs, 1, &nsegs, 0); 1830 if (error != 0 && error != EFBIG) { 1831 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1832 error); 1833 m_freem(m0); 1834 return error; 1835 } 1836 if (error != 0) { 1837 mnew = m_defrag(m0, MB_DONTWAIT); 1838 if (mnew == NULL) { 1839 device_printf(sc->sc_dev, 1840 "could not defragment mbuf\n"); 1841 m_freem(m0); 1842 return ENOBUFS; 1843 } 1844 m0 = mnew; 1845 1846 error = bus_dmamap_load_mbuf_segment(sc->txq.data_dmat, data->map, 1847 m0, segs, 1, &nsegs, 0); 1848 if (error != 0) { 1849 device_printf(sc->sc_dev, 1850 "could not map mbuf (error %d)\n", error); 1851 m_freem(m0); 1852 return error; 1853 } 1854 1855 /* packet header may have moved, reset our local pointer */ 1856 wh = mtod(m0, struct ieee80211_frame *); 1857 } 1858 1859 if (ieee80211_radiotap_active_vap(vap)) { 1860 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1861 1862 tap->wt_flags = 0; 1863 tap->wt_rate = rate; 1864 tap->wt_antenna = sc->tx_ant; 1865 1866 ieee80211_radiotap_tx(vap, m0); 1867 } 1868 1869 data->m = m0; 1870 data->ni = ni; 1871 1872 /* remember link conditions for rate adaptation algorithm */ 1873 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1874 data->rix = ni->ni_txrate; 1875 /* XXX probably need last rssi value and not avg */ 1876 data->rssi = ic->ic_node_getrssi(ni); 1877 } else 1878 data->rix = IEEE80211_FIXED_RATE_NONE; 1879 1880 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1881 flags |= RT2560_TX_ACK; 1882 1883 dur = ieee80211_ack_duration(ic->ic_rt, 1884 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1885 *(uint16_t *)wh->i_dur = htole16(dur); 1886 } 1887 1888 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1889 segs->ds_addr); 1890 1891 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1892 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1893 BUS_DMASYNC_PREWRITE); 1894 1895 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1896 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1897 1898 /* kick encrypt */ 1899 sc->txq.queued++; 1900 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1901 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1902 1903 return 0; 1904 } 1905 1906 static void 1907 rt2560_start_locked(struct ifnet *ifp) 1908 { 1909 struct rt2560_softc *sc = ifp->if_softc; 1910 struct mbuf *m; 1911 struct ieee80211_node *ni; 1912 1913 for (;;) { 1914 m = ifq_dequeue(&ifp->if_snd); 1915 if (m == NULL) 1916 break; 1917 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1918 ifq_prepend(&ifp->if_snd, m); 1919 ifq_set_oactive(&ifp->if_snd); 1920 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1921 break; 1922 } 1923 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1924 if (rt2560_tx_data(sc, m, ni) != 0) { 1925 ieee80211_free_node(ni); 1926 IFNET_STAT_INC(ifp, oerrors, 1); 1927 break; 1928 } 1929 1930 sc->sc_tx_timer = 5; 1931 } 1932 } 1933 1934 static void 1935 rt2560_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1936 { 1937 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1938 rt2560_start_locked(ifp); 1939 } 1940 1941 static void 1942 rt2560_watchdog_callout(void *arg) 1943 { 1944 struct rt2560_softc *sc = arg; 1945 struct ifnet *ifp = sc->sc_ifp; 1946 1947 KASSERT(ifp->if_flags & IFF_RUNNING, ("not running")); 1948 1949 if (sc->sc_invalid) /* card ejected */ 1950 return; 1951 1952 rt2560_encryption_intr(sc); 1953 rt2560_tx_intr(sc); 1954 1955 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1956 if_printf(ifp, "device timeout\n"); 1957 rt2560_init_locked(sc); 1958 IFNET_STAT_INC(ifp, oerrors, 1); 1959 /* NB: callout is reset in rt2560_init() */ 1960 return; 1961 } 1962 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 1963 } 1964 1965 static int 1966 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred) 1967 { 1968 struct rt2560_softc *sc = ifp->if_softc; 1969 struct ieee80211com *ic = ifp->if_l2com; 1970 struct ifreq *ifr = (struct ifreq *) data; 1971 int error = 0, startall = 0; 1972 1973 switch (cmd) { 1974 case SIOCSIFFLAGS: 1975 if (ifp->if_flags & IFF_UP) { 1976 if ((ifp->if_flags & IFF_RUNNING) == 0) { 1977 rt2560_init_locked(sc); 1978 startall = 1; 1979 } else 1980 rt2560_update_promisc(ifp); 1981 } else { 1982 if (ifp->if_flags & IFF_RUNNING) 1983 rt2560_stop_locked(sc); 1984 } 1985 if (startall) 1986 ieee80211_start_all(ic); 1987 break; 1988 case SIOCGIFMEDIA: 1989 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1990 break; 1991 case SIOCGIFADDR: 1992 error = ether_ioctl(ifp, cmd, data); 1993 break; 1994 default: 1995 error = EINVAL; 1996 break; 1997 } 1998 return error; 1999 } 2000 2001 static void 2002 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2003 { 2004 uint32_t tmp; 2005 int ntries; 2006 2007 for (ntries = 0; ntries < 100; ntries++) { 2008 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2009 break; 2010 DELAY(1); 2011 } 2012 if (ntries == 100) { 2013 device_printf(sc->sc_dev, "could not write to BBP\n"); 2014 return; 2015 } 2016 2017 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2018 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2019 2020 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2021 } 2022 2023 static uint8_t 2024 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2025 { 2026 uint32_t val; 2027 int ntries; 2028 2029 for (ntries = 0; ntries < 100; ntries++) { 2030 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2031 break; 2032 DELAY(1); 2033 } 2034 if (ntries == 100) { 2035 device_printf(sc->sc_dev, "could not read from BBP\n"); 2036 return 0; 2037 } 2038 2039 val = RT2560_BBP_BUSY | reg << 8; 2040 RAL_WRITE(sc, RT2560_BBPCSR, val); 2041 2042 for (ntries = 0; ntries < 100; ntries++) { 2043 val = RAL_READ(sc, RT2560_BBPCSR); 2044 if (!(val & RT2560_BBP_BUSY)) 2045 return val & 0xff; 2046 DELAY(1); 2047 } 2048 2049 device_printf(sc->sc_dev, "could not read from BBP\n"); 2050 return 0; 2051 } 2052 2053 static void 2054 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2055 { 2056 uint32_t tmp; 2057 int ntries; 2058 2059 for (ntries = 0; ntries < 100; ntries++) { 2060 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2061 break; 2062 DELAY(1); 2063 } 2064 if (ntries == 100) { 2065 device_printf(sc->sc_dev, "could not write to RF\n"); 2066 return; 2067 } 2068 2069 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2070 (reg & 0x3); 2071 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2072 2073 /* remember last written value in sc */ 2074 sc->rf_regs[reg] = val; 2075 2076 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2077 } 2078 2079 static void 2080 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2081 { 2082 struct ifnet *ifp = sc->sc_ifp; 2083 struct ieee80211com *ic = ifp->if_l2com; 2084 uint8_t power, tmp; 2085 u_int i, chan; 2086 2087 chan = ieee80211_chan2ieee(ic, c); 2088 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2089 2090 if (IEEE80211_IS_CHAN_2GHZ(c)) 2091 power = min(sc->txpow[chan - 1], 31); 2092 else 2093 power = 31; 2094 2095 /* adjust txpower using ifconfig settings */ 2096 power -= (100 - ic->ic_txpowlimit) / 8; 2097 2098 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2099 2100 switch (sc->rf_rev) { 2101 case RT2560_RF_2522: 2102 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2103 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2104 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2105 break; 2106 2107 case RT2560_RF_2523: 2108 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2109 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2110 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2111 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2112 break; 2113 2114 case RT2560_RF_2524: 2115 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2116 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2117 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2118 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2119 break; 2120 2121 case RT2560_RF_2525: 2122 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2123 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2124 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2125 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2126 2127 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2128 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_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 break; 2132 2133 case RT2560_RF_2525E: 2134 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2135 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2136 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2137 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2138 break; 2139 2140 case RT2560_RF_2526: 2141 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2142 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2143 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2144 2145 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2146 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2147 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2148 break; 2149 2150 /* dual-band RF */ 2151 case RT2560_RF_5222: 2152 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2153 2154 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2155 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2156 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2157 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2158 break; 2159 default: 2160 kprintf("unknown ral rev=%d\n", sc->rf_rev); 2161 } 2162 2163 /* XXX */ 2164 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2165 /* set Japan filter bit for channel 14 */ 2166 tmp = rt2560_bbp_read(sc, 70); 2167 2168 tmp &= ~RT2560_JAPAN_FILTER; 2169 if (chan == 14) 2170 tmp |= RT2560_JAPAN_FILTER; 2171 2172 rt2560_bbp_write(sc, 70, tmp); 2173 2174 /* clear CRC errors */ 2175 RAL_READ(sc, RT2560_CNT0); 2176 } 2177 } 2178 2179 static void 2180 rt2560_set_channel(struct ieee80211com *ic) 2181 { 2182 struct ifnet *ifp = ic->ic_ifp; 2183 struct rt2560_softc *sc = ifp->if_softc; 2184 2185 rt2560_set_chan(sc, ic->ic_curchan); 2186 2187 } 2188 2189 #if 0 2190 /* 2191 * Disable RF auto-tuning. 2192 */ 2193 static void 2194 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2195 { 2196 uint32_t tmp; 2197 2198 if (sc->rf_rev != RT2560_RF_2523) { 2199 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2200 rt2560_rf_write(sc, RAL_RF1, tmp); 2201 } 2202 2203 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2204 rt2560_rf_write(sc, RAL_RF3, tmp); 2205 2206 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2207 } 2208 #endif 2209 2210 /* 2211 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2212 * synchronization. 2213 */ 2214 static void 2215 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2216 { 2217 struct ifnet *ifp = sc->sc_ifp; 2218 struct ieee80211com *ic = ifp->if_l2com; 2219 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2220 uint16_t logcwmin, preload; 2221 uint32_t tmp; 2222 2223 /* first, disable TSF synchronization */ 2224 RAL_WRITE(sc, RT2560_CSR14, 0); 2225 2226 tmp = 16 * vap->iv_bss->ni_intval; 2227 RAL_WRITE(sc, RT2560_CSR12, tmp); 2228 2229 RAL_WRITE(sc, RT2560_CSR13, 0); 2230 2231 logcwmin = 5; 2232 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2233 tmp = logcwmin << 16 | preload; 2234 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2235 2236 /* finally, enable TSF synchronization */ 2237 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2238 if (ic->ic_opmode == IEEE80211_M_STA) 2239 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2240 else 2241 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2242 RT2560_ENABLE_BEACON_GENERATOR; 2243 RAL_WRITE(sc, RT2560_CSR14, tmp); 2244 2245 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2246 } 2247 2248 static void 2249 rt2560_enable_tsf(struct rt2560_softc *sc) 2250 { 2251 RAL_WRITE(sc, RT2560_CSR14, 0); 2252 RAL_WRITE(sc, RT2560_CSR14, 2253 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2254 } 2255 2256 static void 2257 rt2560_update_plcp(struct rt2560_softc *sc) 2258 { 2259 struct ifnet *ifp = sc->sc_ifp; 2260 struct ieee80211com *ic = ifp->if_l2com; 2261 2262 /* no short preamble for 1Mbps */ 2263 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2264 2265 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2266 /* values taken from the reference driver */ 2267 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2268 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2269 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2270 } else { 2271 /* same values as above or'ed 0x8 */ 2272 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2273 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2274 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2275 } 2276 2277 DPRINTF(sc, "updating PLCP for %s preamble\n", 2278 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2279 } 2280 2281 /* 2282 * This function can be called by ieee80211_set_shortslottime(). Refer to 2283 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2284 */ 2285 static void 2286 rt2560_update_slot(struct ifnet *ifp) 2287 { 2288 struct rt2560_softc *sc = ifp->if_softc; 2289 struct ieee80211com *ic = ifp->if_l2com; 2290 uint8_t slottime; 2291 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2292 uint32_t tmp; 2293 2294 #ifndef FORCE_SLOTTIME 2295 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2296 #else 2297 /* 2298 * Setting slot time according to "short slot time" capability 2299 * in beacon/probe_resp seems to cause problem to acknowledge 2300 * certain AP's data frames transimitted at CCK/DS rates: the 2301 * problematic AP keeps retransmitting data frames, probably 2302 * because MAC level acks are not received by hardware. 2303 * So we cheat a little bit here by claiming we are capable of 2304 * "short slot time" but setting hardware slot time to the normal 2305 * slot time. ral(4) does not seem to have trouble to receive 2306 * frames transmitted using short slot time even if hardware 2307 * slot time is set to normal slot time. If we didn't use this 2308 * trick, we would have to claim that short slot time is not 2309 * supported; this would give relative poor RX performance 2310 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2311 * slot time. 2312 */ 2313 slottime = 20; 2314 #endif 2315 2316 /* update the MAC slot boundaries */ 2317 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2318 tx_pifs = tx_sifs + slottime; 2319 tx_difs = tx_sifs + 2 * slottime; 2320 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2321 2322 tmp = RAL_READ(sc, RT2560_CSR11); 2323 tmp = (tmp & ~0x1f00) | slottime << 8; 2324 RAL_WRITE(sc, RT2560_CSR11, tmp); 2325 2326 tmp = tx_pifs << 16 | tx_sifs; 2327 RAL_WRITE(sc, RT2560_CSR18, tmp); 2328 2329 tmp = eifs << 16 | tx_difs; 2330 RAL_WRITE(sc, RT2560_CSR19, tmp); 2331 2332 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2333 } 2334 2335 static void 2336 rt2560_set_basicrates(struct rt2560_softc *sc) 2337 { 2338 struct ifnet *ifp = sc->sc_ifp; 2339 struct ieee80211com *ic = ifp->if_l2com; 2340 2341 /* update basic rate set */ 2342 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2343 /* 11b basic rates: 1, 2Mbps */ 2344 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2345 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2346 /* 11a basic rates: 6, 12, 24Mbps */ 2347 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2348 } else { 2349 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2350 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2351 } 2352 } 2353 2354 static void 2355 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2356 { 2357 uint32_t tmp; 2358 2359 /* set ON period to 70ms and OFF period to 30ms */ 2360 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2361 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2362 } 2363 2364 static void 2365 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2366 { 2367 uint32_t tmp; 2368 char ethstr[ETHER_ADDRSTRLEN + 1]; 2369 2370 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2371 RAL_WRITE(sc, RT2560_CSR5, tmp); 2372 2373 tmp = bssid[4] | bssid[5] << 8; 2374 RAL_WRITE(sc, RT2560_CSR6, tmp); 2375 2376 DPRINTF(sc, "setting BSSID to %s\n", kether_ntoa(bssid, ethstr)); 2377 } 2378 2379 static void 2380 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2381 { 2382 uint32_t tmp; 2383 char ethstr[ETHER_ADDRSTRLEN + 1]; 2384 2385 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2386 RAL_WRITE(sc, RT2560_CSR3, tmp); 2387 2388 tmp = addr[4] | addr[5] << 8; 2389 RAL_WRITE(sc, RT2560_CSR4, tmp); 2390 2391 DPRINTF(sc, "setting MAC address to %s\n", kether_ntoa(addr, ethstr)); 2392 } 2393 2394 static void 2395 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2396 { 2397 uint32_t tmp; 2398 2399 tmp = RAL_READ(sc, RT2560_CSR3); 2400 addr[0] = tmp & 0xff; 2401 addr[1] = (tmp >> 8) & 0xff; 2402 addr[2] = (tmp >> 16) & 0xff; 2403 addr[3] = (tmp >> 24); 2404 2405 tmp = RAL_READ(sc, RT2560_CSR4); 2406 addr[4] = tmp & 0xff; 2407 addr[5] = (tmp >> 8) & 0xff; 2408 } 2409 2410 static void 2411 rt2560_update_promisc(struct ifnet *ifp) 2412 { 2413 struct rt2560_softc *sc = ifp->if_softc; 2414 uint32_t tmp; 2415 2416 tmp = RAL_READ(sc, RT2560_RXCSR0); 2417 2418 tmp &= ~RT2560_DROP_NOT_TO_ME; 2419 if (!(ifp->if_flags & IFF_PROMISC)) 2420 tmp |= RT2560_DROP_NOT_TO_ME; 2421 2422 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2423 2424 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2425 "entering" : "leaving"); 2426 } 2427 2428 static const char * 2429 rt2560_get_rf(int rev) 2430 { 2431 switch (rev) { 2432 case RT2560_RF_2522: return "RT2522"; 2433 case RT2560_RF_2523: return "RT2523"; 2434 case RT2560_RF_2524: return "RT2524"; 2435 case RT2560_RF_2525: return "RT2525"; 2436 case RT2560_RF_2525E: return "RT2525e"; 2437 case RT2560_RF_2526: return "RT2526"; 2438 case RT2560_RF_5222: return "RT5222"; 2439 default: return "unknown"; 2440 } 2441 } 2442 2443 static void 2444 rt2560_read_config(struct rt2560_softc *sc) 2445 { 2446 uint16_t val; 2447 int i; 2448 2449 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2450 sc->rf_rev = (val >> 11) & 0x7; 2451 sc->hw_radio = (val >> 10) & 0x1; 2452 sc->led_mode = (val >> 6) & 0x7; 2453 sc->rx_ant = (val >> 4) & 0x3; 2454 sc->tx_ant = (val >> 2) & 0x3; 2455 sc->nb_ant = val & 0x3; 2456 2457 /* read default values for BBP registers */ 2458 for (i = 0; i < 16; i++) { 2459 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2460 if (val == 0 || val == 0xffff) 2461 continue; 2462 2463 sc->bbp_prom[i].reg = val >> 8; 2464 sc->bbp_prom[i].val = val & 0xff; 2465 } 2466 2467 /* read Tx power for all b/g channels */ 2468 for (i = 0; i < 14 / 2; i++) { 2469 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2470 sc->txpow[i * 2] = val & 0xff; 2471 sc->txpow[i * 2 + 1] = val >> 8; 2472 } 2473 for (i = 0; i < 14; ++i) { 2474 if (sc->txpow[i] > 31) 2475 sc->txpow[i] = 24; 2476 } 2477 2478 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2479 if ((val & 0xff) == 0xff) 2480 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2481 else 2482 sc->rssi_corr = val & 0xff; 2483 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2484 sc->rssi_corr, val); 2485 } 2486 2487 2488 static void 2489 rt2560_scan_start(struct ieee80211com *ic) 2490 { 2491 struct ifnet *ifp = ic->ic_ifp; 2492 struct rt2560_softc *sc = ifp->if_softc; 2493 2494 /* abort TSF synchronization */ 2495 RAL_WRITE(sc, RT2560_CSR14, 0); 2496 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2497 } 2498 2499 static void 2500 rt2560_scan_end(struct ieee80211com *ic) 2501 { 2502 struct ifnet *ifp = ic->ic_ifp; 2503 struct rt2560_softc *sc = ifp->if_softc; 2504 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2505 2506 rt2560_enable_tsf_sync(sc); 2507 /* XXX keep local copy */ 2508 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2509 } 2510 2511 static int 2512 rt2560_bbp_init(struct rt2560_softc *sc) 2513 { 2514 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2515 int i, ntries; 2516 2517 /* wait for BBP to be ready */ 2518 for (ntries = 0; ntries < 100; ntries++) { 2519 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2520 break; 2521 DELAY(1); 2522 } 2523 if (ntries == 100) { 2524 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2525 return EIO; 2526 } 2527 2528 /* initialize BBP registers to default values */ 2529 for (i = 0; i < N(rt2560_def_bbp); i++) { 2530 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2531 rt2560_def_bbp[i].val); 2532 } 2533 2534 /* initialize BBP registers to values stored in EEPROM */ 2535 for (i = 0; i < 16; i++) { 2536 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2537 break; 2538 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2539 } 2540 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2541 2542 return 0; 2543 #undef N 2544 } 2545 2546 static void 2547 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2548 { 2549 uint32_t tmp; 2550 uint8_t tx; 2551 2552 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2553 if (antenna == 1) 2554 tx |= RT2560_BBP_ANTA; 2555 else if (antenna == 2) 2556 tx |= RT2560_BBP_ANTB; 2557 else 2558 tx |= RT2560_BBP_DIVERSITY; 2559 2560 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2561 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2562 sc->rf_rev == RT2560_RF_5222) 2563 tx |= RT2560_BBP_FLIPIQ; 2564 2565 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2566 2567 /* update values for CCK and OFDM in BBPCSR1 */ 2568 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2569 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2570 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2571 } 2572 2573 static void 2574 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2575 { 2576 uint8_t rx; 2577 2578 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2579 if (antenna == 1) 2580 rx |= RT2560_BBP_ANTA; 2581 else if (antenna == 2) 2582 rx |= RT2560_BBP_ANTB; 2583 else 2584 rx |= RT2560_BBP_DIVERSITY; 2585 2586 /* need to force no I/Q flip for RF 2525e and 2526 */ 2587 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2588 rx &= ~RT2560_BBP_FLIPIQ; 2589 2590 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2591 } 2592 2593 static void 2594 rt2560_init_locked(struct rt2560_softc *sc) 2595 { 2596 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2597 struct ifnet *ifp = sc->sc_ifp; 2598 struct ieee80211com *ic = ifp->if_l2com; 2599 uint32_t tmp; 2600 int i; 2601 2602 rt2560_stop_locked(sc); 2603 2604 /* setup tx rings */ 2605 tmp = RT2560_PRIO_RING_COUNT << 24 | 2606 RT2560_ATIM_RING_COUNT << 16 | 2607 RT2560_TX_RING_COUNT << 8 | 2608 RT2560_TX_DESC_SIZE; 2609 2610 /* rings must be initialized in this exact order */ 2611 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2612 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2613 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2614 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2615 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2616 2617 /* setup rx ring */ 2618 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2619 2620 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2621 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2622 2623 /* initialize MAC registers to default values */ 2624 for (i = 0; i < N(rt2560_def_mac); i++) 2625 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2626 2627 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2628 2629 /* set basic rate set (will be updated later) */ 2630 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2631 2632 rt2560_update_slot(ifp); 2633 rt2560_update_plcp(sc); 2634 rt2560_update_led(sc, 0, 0); 2635 2636 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2637 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2638 2639 if (rt2560_bbp_init(sc) != 0) { 2640 rt2560_stop(sc); 2641 return; 2642 } 2643 2644 rt2560_set_txantenna(sc, sc->tx_ant); 2645 rt2560_set_rxantenna(sc, sc->rx_ant); 2646 2647 /* set default BSS channel */ 2648 rt2560_set_chan(sc, ic->ic_curchan); 2649 2650 /* kick Rx */ 2651 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2652 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2653 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2654 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2655 ic->ic_opmode != IEEE80211_M_MBSS) 2656 tmp |= RT2560_DROP_TODS; 2657 if (!(ifp->if_flags & IFF_PROMISC)) 2658 tmp |= RT2560_DROP_NOT_TO_ME; 2659 } 2660 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2661 2662 /* clear old FCS and Rx FIFO errors */ 2663 RAL_READ(sc, RT2560_CNT0); 2664 RAL_READ(sc, RT2560_CNT4); 2665 2666 /* clear any pending interrupts */ 2667 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2668 2669 /* enable interrupts */ 2670 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2671 2672 ifq_clr_oactive(&ifp->if_snd); 2673 ifp->if_flags |= IFF_RUNNING; 2674 2675 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog_callout, sc); 2676 #undef N 2677 } 2678 2679 static void 2680 rt2560_init(void *priv) 2681 { 2682 struct rt2560_softc *sc = priv; 2683 struct ifnet *ifp = sc->sc_ifp; 2684 struct ieee80211com *ic = ifp->if_l2com; 2685 2686 rt2560_init_locked(sc); 2687 2688 if (ifp->if_flags & IFF_RUNNING) 2689 ieee80211_start_all(ic); /* start all vap's */ 2690 } 2691 2692 static void 2693 rt2560_stop_locked(struct rt2560_softc *sc) 2694 { 2695 struct ifnet *ifp = sc->sc_ifp; 2696 volatile int *flags = &sc->sc_flags; 2697 2698 while (*flags & RT2560_F_INPUT_RUNNING) 2699 zsleep(sc, &wlan_global_serializer, 0, "ralrunning", hz/10); 2700 2701 callout_stop(&sc->watchdog_ch); 2702 sc->sc_tx_timer = 0; 2703 2704 if (ifp->if_flags & IFF_RUNNING) { 2705 ifp->if_flags &= ~IFF_RUNNING; 2706 ifq_clr_oactive(&ifp->if_snd); 2707 2708 /* abort Tx */ 2709 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2710 2711 /* disable Rx */ 2712 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2713 2714 /* reset ASIC (imply reset BBP) */ 2715 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2716 RAL_WRITE(sc, RT2560_CSR1, 0); 2717 2718 /* disable interrupts */ 2719 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2720 2721 /* reset Tx and Rx rings */ 2722 rt2560_reset_tx_ring(sc, &sc->txq); 2723 rt2560_reset_tx_ring(sc, &sc->atimq); 2724 rt2560_reset_tx_ring(sc, &sc->prioq); 2725 rt2560_reset_tx_ring(sc, &sc->bcnq); 2726 rt2560_reset_rx_ring(sc, &sc->rxq); 2727 } 2728 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2729 } 2730 2731 void 2732 rt2560_stop(void *arg) 2733 { 2734 struct rt2560_softc *sc = arg; 2735 2736 rt2560_stop_locked(sc); 2737 } 2738 2739 static int 2740 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2741 const struct ieee80211_bpf_params *params) 2742 { 2743 struct ieee80211com *ic = ni->ni_ic; 2744 struct ifnet *ifp = ic->ic_ifp; 2745 struct rt2560_softc *sc = ifp->if_softc; 2746 2747 /* prevent management frames from being sent if we're not ready */ 2748 if (!(ifp->if_flags & IFF_RUNNING)) { 2749 m_freem(m); 2750 ieee80211_free_node(ni); 2751 return ENETDOWN; 2752 } 2753 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2754 ifq_set_oactive(&ifp->if_snd); 2755 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2756 m_freem(m); 2757 ieee80211_free_node(ni); 2758 return ENOBUFS; /* XXX */ 2759 } 2760 2761 IFNET_STAT_INC(ifp, opackets, 1); 2762 2763 if (params == NULL) { 2764 /* 2765 * Legacy path; interpret frame contents to decide 2766 * precisely how to send the frame. 2767 */ 2768 if (rt2560_tx_mgt(sc, m, ni) != 0) 2769 goto bad; 2770 } else { 2771 /* 2772 * Caller supplied explicit parameters to use in 2773 * sending the frame. 2774 */ 2775 if (rt2560_tx_raw(sc, m, ni, params)) 2776 goto bad; 2777 } 2778 sc->sc_tx_timer = 5; 2779 2780 return 0; 2781 bad: 2782 IFNET_STAT_INC(ifp, oerrors, 1); 2783 ieee80211_free_node(ni); 2784 return EIO; /* XXX */ 2785 } 2786