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sys/dev/ral/rt2560.c
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1 /* $FreeBSD: releng/8.0/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 20 #include <sys/cdefs.h> 21 __FBSDID("$FreeBSD: releng/8.0/sys/dev/ral/rt2560.c 195618 2009-07-11 15:02:45Z rpaulo $"); 22 23 /*- 24 * Ralink Technology RT2560 chipset driver 25 * http://www.ralinktech.com/ 26 */ 27 28 #include <sys/param.h> 29 #include <sys/sysctl.h> 30 #include <sys/sockio.h> 31 #include <sys/mbuf.h> 32 #include <sys/kernel.h> 33 #include <sys/socket.h> 34 #include <sys/systm.h> 35 #include <sys/malloc.h> 36 #include <sys/lock.h> 37 #include <sys/mutex.h> 38 #include <sys/module.h> 39 #include <sys/bus.h> 40 #include <sys/endian.h> 41 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 46 #include <net/bpf.h> 47 #include <net/if.h> 48 #include <net/if_arp.h> 49 #include <net/ethernet.h> 50 #include <net/if_dl.h> 51 #include <net/if_media.h> 52 #include <net/if_types.h> 53 54 #include <net80211/ieee80211_var.h> 55 #include <net80211/ieee80211_radiotap.h> 56 #include <net80211/ieee80211_regdomain.h> 57 #include <net80211/ieee80211_amrr.h> 58 59 #include <netinet/in.h> 60 #include <netinet/in_systm.h> 61 #include <netinet/in_var.h> 62 #include <netinet/ip.h> 63 #include <netinet/if_ether.h> 64 65 #include <dev/ral/rt2560reg.h> 66 #include <dev/ral/rt2560var.h> 67 68 #define RT2560_RSSI(sc, rssi) \ 69 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 70 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 71 72 #define RAL_DEBUG 73 #ifdef RAL_DEBUG 74 #define DPRINTF(sc, fmt, ...) do { \ 75 if (sc->sc_debug > 0) \ 76 printf(fmt, __VA_ARGS__); \ 77 } while (0) 78 #define DPRINTFN(sc, n, fmt, ...) do { \ 79 if (sc->sc_debug >= (n)) \ 80 printf(fmt, __VA_ARGS__); \ 81 } while (0) 82 #else 83 #define DPRINTF(sc, fmt, ...) 84 #define DPRINTFN(sc, n, fmt, ...) 85 #endif 86 87 static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 88 const char name[IFNAMSIZ], int unit, int opmode, 89 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 90 const uint8_t mac[IEEE80211_ADDR_LEN]); 91 static void rt2560_vap_delete(struct ieee80211vap *); 92 static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 93 int); 94 static int rt2560_alloc_tx_ring(struct rt2560_softc *, 95 struct rt2560_tx_ring *, int); 96 static void rt2560_reset_tx_ring(struct rt2560_softc *, 97 struct rt2560_tx_ring *); 98 static void rt2560_free_tx_ring(struct rt2560_softc *, 99 struct rt2560_tx_ring *); 100 static int rt2560_alloc_rx_ring(struct rt2560_softc *, 101 struct rt2560_rx_ring *, int); 102 static void rt2560_reset_rx_ring(struct rt2560_softc *, 103 struct rt2560_rx_ring *); 104 static void rt2560_free_rx_ring(struct rt2560_softc *, 105 struct rt2560_rx_ring *); 106 static struct ieee80211_node *rt2560_node_alloc(struct ieee80211vap *, 107 const uint8_t [IEEE80211_ADDR_LEN]); 108 static void rt2560_newassoc(struct ieee80211_node *, int); 109 static int rt2560_newstate(struct ieee80211vap *, 110 enum ieee80211_state, int); 111 static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 112 static void rt2560_encryption_intr(struct rt2560_softc *); 113 static void rt2560_tx_intr(struct rt2560_softc *); 114 static void rt2560_prio_intr(struct rt2560_softc *); 115 static void rt2560_decryption_intr(struct rt2560_softc *); 116 static void rt2560_rx_intr(struct rt2560_softc *); 117 static void rt2560_beacon_update(struct ieee80211vap *, int item); 118 static void rt2560_beacon_expire(struct rt2560_softc *); 119 static void rt2560_wakeup_expire(struct rt2560_softc *); 120 static void rt2560_scan_start(struct ieee80211com *); 121 static void rt2560_scan_end(struct ieee80211com *); 122 static void rt2560_set_channel(struct ieee80211com *); 123 static void rt2560_setup_tx_desc(struct rt2560_softc *, 124 struct rt2560_tx_desc *, uint32_t, int, int, int, 125 bus_addr_t); 126 static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128 static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 129 struct ieee80211_node *); 130 static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 131 struct ieee80211_node *); 132 static void rt2560_start_locked(struct ifnet *); 133 static void rt2560_start(struct ifnet *); 134 static void rt2560_watchdog(void *); 135 static int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 136 static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 137 uint8_t); 138 static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 139 static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 140 uint32_t); 141 static void rt2560_set_chan(struct rt2560_softc *, 142 struct ieee80211_channel *); 143 #if 0 144 static void rt2560_disable_rf_tune(struct rt2560_softc *); 145 #endif 146 static void rt2560_enable_tsf_sync(struct rt2560_softc *); 147 static void rt2560_enable_tsf(struct rt2560_softc *); 148 static void rt2560_update_plcp(struct rt2560_softc *); 149 static void rt2560_update_slot(struct ifnet *); 150 static void rt2560_set_basicrates(struct rt2560_softc *); 151 static void rt2560_update_led(struct rt2560_softc *, int, int); 152 static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 153 static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 154 static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 155 static void rt2560_update_promisc(struct ifnet *); 156 static const char *rt2560_get_rf(int); 157 static void rt2560_read_config(struct rt2560_softc *); 158 static int rt2560_bbp_init(struct rt2560_softc *); 159 static void rt2560_set_txantenna(struct rt2560_softc *, int); 160 static void rt2560_set_rxantenna(struct rt2560_softc *, int); 161 static void rt2560_init_locked(struct rt2560_softc *); 162 static void rt2560_init(void *); 163 static void rt2560_stop_locked(struct rt2560_softc *); 164 static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 165 const struct ieee80211_bpf_params *); 166 167 static const struct { 168 uint32_t reg; 169 uint32_t val; 170 } rt2560_def_mac[] = { 171 RT2560_DEF_MAC 172 }; 173 174 static const struct { 175 uint8_t reg; 176 uint8_t val; 177 } rt2560_def_bbp[] = { 178 RT2560_DEF_BBP 179 }; 180 181 static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 182 static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 183 static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 184 static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 185 static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 186 static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 187 static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 188 static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 189 190 static const struct { 191 uint8_t chan; 192 uint32_t r1, r2, r4; 193 } rt2560_rf5222[] = { 194 RT2560_RF5222 195 }; 196 197 int 198 rt2560_attach(device_t dev, int id) 199 { 200 struct rt2560_softc *sc = device_get_softc(dev); 201 struct ieee80211com *ic; 202 struct ifnet *ifp; 203 int error; 204 uint8_t bands; 205 uint8_t macaddr[IEEE80211_ADDR_LEN]; 206 207 sc->sc_dev = dev; 208 209 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 210 MTX_DEF | MTX_RECURSE); 211 212 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 213 214 /* retrieve RT2560 rev. no */ 215 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 216 217 /* retrieve RF rev. no and various other things from EEPROM */ 218 rt2560_read_config(sc); 219 220 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 221 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 222 223 /* 224 * Allocate Tx and Rx rings. 225 */ 226 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 227 if (error != 0) { 228 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 229 goto fail1; 230 } 231 232 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 233 if (error != 0) { 234 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 235 goto fail2; 236 } 237 238 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 239 if (error != 0) { 240 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 241 goto fail3; 242 } 243 244 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 245 if (error != 0) { 246 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 247 goto fail4; 248 } 249 250 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 251 if (error != 0) { 252 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 253 goto fail5; 254 } 255 256 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 257 if (ifp == NULL) { 258 device_printf(sc->sc_dev, "can not if_alloc()\n"); 259 goto fail6; 260 } 261 ic = ifp->if_l2com; 262 263 /* retrieve MAC address */ 264 rt2560_get_macaddr(sc, macaddr); 265 266 ifp->if_softc = sc; 267 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 268 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 269 ifp->if_init = rt2560_init; 270 ifp->if_ioctl = rt2560_ioctl; 271 ifp->if_start = rt2560_start; 272 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 273 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 274 IFQ_SET_READY(&ifp->if_snd); 275 276 ic->ic_ifp = ifp; 277 ic->ic_opmode = IEEE80211_M_STA; 278 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 279 280 /* set device capabilities */ 281 ic->ic_caps = 282 IEEE80211_C_STA /* station mode */ 283 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 284 | IEEE80211_C_HOSTAP /* hostap mode */ 285 | IEEE80211_C_MONITOR /* monitor mode */ 286 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 287 | IEEE80211_C_WDS /* 4-address traffic works */ 288 | IEEE80211_C_MBSS /* mesh point link mode */ 289 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 290 | IEEE80211_C_SHSLOT /* short slot time supported */ 291 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 292 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 293 #ifdef notyet 294 | IEEE80211_C_TXFRAG /* handle tx frags */ 295 #endif 296 ; 297 298 bands = 0; 299 setbit(&bands, IEEE80211_MODE_11B); 300 setbit(&bands, IEEE80211_MODE_11G); 301 if (sc->rf_rev == RT2560_RF_5222) 302 setbit(&bands, IEEE80211_MODE_11A); 303 ieee80211_init_channels(ic, NULL, &bands); 304 305 ieee80211_ifattach(ic, macaddr); 306 ic->ic_newassoc = rt2560_newassoc; 307 ic->ic_raw_xmit = rt2560_raw_xmit; 308 ic->ic_updateslot = rt2560_update_slot; 309 ic->ic_update_promisc = rt2560_update_promisc; 310 ic->ic_node_alloc = rt2560_node_alloc; 311 ic->ic_scan_start = rt2560_scan_start; 312 ic->ic_scan_end = rt2560_scan_end; 313 ic->ic_set_channel = rt2560_set_channel; 314 315 ic->ic_vap_create = rt2560_vap_create; 316 ic->ic_vap_delete = rt2560_vap_delete; 317 318 ieee80211_radiotap_attach(ic, 319 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 320 RT2560_TX_RADIOTAP_PRESENT, 321 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 322 RT2560_RX_RADIOTAP_PRESENT); 323 324 /* 325 * Add a few sysctl knobs. 326 */ 327 #ifdef RAL_DEBUG 328 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 329 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 330 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 331 #endif 332 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 333 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 334 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 335 336 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 337 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 338 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 339 340 if (bootverbose) 341 ieee80211_announce(ic); 342 343 return 0; 344 345 fail6: rt2560_free_rx_ring(sc, &sc->rxq); 346 fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 347 fail4: rt2560_free_tx_ring(sc, &sc->prioq); 348 fail3: rt2560_free_tx_ring(sc, &sc->atimq); 349 fail2: rt2560_free_tx_ring(sc, &sc->txq); 350 fail1: mtx_destroy(&sc->sc_mtx); 351 352 return ENXIO; 353 } 354 355 int 356 rt2560_detach(void *xsc) 357 { 358 struct rt2560_softc *sc = xsc; 359 struct ifnet *ifp = sc->sc_ifp; 360 struct ieee80211com *ic = ifp->if_l2com; 361 362 rt2560_stop(sc); 363 364 ieee80211_ifdetach(ic); 365 366 rt2560_free_tx_ring(sc, &sc->txq); 367 rt2560_free_tx_ring(sc, &sc->atimq); 368 rt2560_free_tx_ring(sc, &sc->prioq); 369 rt2560_free_tx_ring(sc, &sc->bcnq); 370 rt2560_free_rx_ring(sc, &sc->rxq); 371 372 if_free(ifp); 373 374 mtx_destroy(&sc->sc_mtx); 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 *) malloc(sizeof(struct rt2560_vap), 422 M_80211_VAP, M_NOWAIT | 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_amrr_init(&rvp->amrr, vap, 434 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 435 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 436 500 /* ms */); 437 438 /* complete setup */ 439 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 440 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 441 ic->ic_opmode = opmode; 442 return vap; 443 } 444 445 static void 446 rt2560_vap_delete(struct ieee80211vap *vap) 447 { 448 struct rt2560_vap *rvp = RT2560_VAP(vap); 449 450 ieee80211_amrr_cleanup(&rvp->amrr); 451 ieee80211_vap_detach(vap); 452 free(rvp, M_80211_VAP); 453 } 454 455 void 456 rt2560_resume(void *xsc) 457 { 458 struct rt2560_softc *sc = xsc; 459 struct ifnet *ifp = sc->sc_ifp; 460 461 if (ifp->if_flags & IFF_UP) 462 rt2560_init(sc); 463 } 464 465 static void 466 rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 467 { 468 if (error != 0) 469 return; 470 471 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 472 473 *(bus_addr_t *)arg = segs[0].ds_addr; 474 } 475 476 static int 477 rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 478 int count) 479 { 480 int i, error; 481 482 ring->count = count; 483 ring->queued = 0; 484 ring->cur = ring->next = 0; 485 ring->cur_encrypt = ring->next_encrypt = 0; 486 487 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 488 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 489 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 490 0, NULL, NULL, &ring->desc_dmat); 491 if (error != 0) { 492 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 493 goto fail; 494 } 495 496 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 497 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 498 if (error != 0) { 499 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 500 goto fail; 501 } 502 503 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 504 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 505 0); 506 if (error != 0) { 507 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 508 goto fail; 509 } 510 511 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 512 M_NOWAIT | M_ZERO); 513 if (ring->data == NULL) { 514 device_printf(sc->sc_dev, "could not allocate soft data\n"); 515 error = ENOMEM; 516 goto fail; 517 } 518 519 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 520 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 521 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 522 &ring->data_dmat); 523 if (error != 0) { 524 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 525 goto fail; 526 } 527 528 for (i = 0; i < count; i++) { 529 error = bus_dmamap_create(ring->data_dmat, 0, 530 &ring->data[i].map); 531 if (error != 0) { 532 device_printf(sc->sc_dev, "could not create DMA map\n"); 533 goto fail; 534 } 535 } 536 537 return 0; 538 539 fail: rt2560_free_tx_ring(sc, ring); 540 return error; 541 } 542 543 static void 544 rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 545 { 546 struct rt2560_tx_desc *desc; 547 struct rt2560_tx_data *data; 548 int i; 549 550 for (i = 0; i < ring->count; i++) { 551 desc = &ring->desc[i]; 552 data = &ring->data[i]; 553 554 if (data->m != NULL) { 555 bus_dmamap_sync(ring->data_dmat, data->map, 556 BUS_DMASYNC_POSTWRITE); 557 bus_dmamap_unload(ring->data_dmat, data->map); 558 m_freem(data->m); 559 data->m = NULL; 560 } 561 562 if (data->ni != NULL) { 563 ieee80211_free_node(data->ni); 564 data->ni = NULL; 565 } 566 567 desc->flags = 0; 568 } 569 570 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 571 572 ring->queued = 0; 573 ring->cur = ring->next = 0; 574 ring->cur_encrypt = ring->next_encrypt = 0; 575 } 576 577 static void 578 rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 579 { 580 struct rt2560_tx_data *data; 581 int i; 582 583 if (ring->desc != NULL) { 584 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 585 BUS_DMASYNC_POSTWRITE); 586 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 587 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 588 } 589 590 if (ring->desc_dmat != NULL) 591 bus_dma_tag_destroy(ring->desc_dmat); 592 593 if (ring->data != NULL) { 594 for (i = 0; i < ring->count; i++) { 595 data = &ring->data[i]; 596 597 if (data->m != NULL) { 598 bus_dmamap_sync(ring->data_dmat, data->map, 599 BUS_DMASYNC_POSTWRITE); 600 bus_dmamap_unload(ring->data_dmat, data->map); 601 m_freem(data->m); 602 } 603 604 if (data->ni != NULL) 605 ieee80211_free_node(data->ni); 606 607 if (data->map != NULL) 608 bus_dmamap_destroy(ring->data_dmat, data->map); 609 } 610 611 free(ring->data, M_DEVBUF); 612 } 613 614 if (ring->data_dmat != NULL) 615 bus_dma_tag_destroy(ring->data_dmat); 616 } 617 618 static int 619 rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 620 int count) 621 { 622 struct rt2560_rx_desc *desc; 623 struct rt2560_rx_data *data; 624 bus_addr_t physaddr; 625 int i, error; 626 627 ring->count = count; 628 ring->cur = ring->next = 0; 629 ring->cur_decrypt = 0; 630 631 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 632 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 633 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 634 0, NULL, NULL, &ring->desc_dmat); 635 if (error != 0) { 636 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 637 goto fail; 638 } 639 640 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 641 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 642 if (error != 0) { 643 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 644 goto fail; 645 } 646 647 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 648 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 649 0); 650 if (error != 0) { 651 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 652 goto fail; 653 } 654 655 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 656 M_NOWAIT | M_ZERO); 657 if (ring->data == NULL) { 658 device_printf(sc->sc_dev, "could not allocate soft data\n"); 659 error = ENOMEM; 660 goto fail; 661 } 662 663 /* 664 * Pre-allocate Rx buffers and populate Rx ring. 665 */ 666 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 667 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 668 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 669 if (error != 0) { 670 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 671 goto fail; 672 } 673 674 for (i = 0; i < count; i++) { 675 desc = &sc->rxq.desc[i]; 676 data = &sc->rxq.data[i]; 677 678 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 679 if (error != 0) { 680 device_printf(sc->sc_dev, "could not create DMA map\n"); 681 goto fail; 682 } 683 684 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 685 if (data->m == NULL) { 686 device_printf(sc->sc_dev, 687 "could not allocate rx mbuf\n"); 688 error = ENOMEM; 689 goto fail; 690 } 691 692 error = bus_dmamap_load(ring->data_dmat, data->map, 693 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 694 &physaddr, 0); 695 if (error != 0) { 696 device_printf(sc->sc_dev, 697 "could not load rx buf DMA map"); 698 goto fail; 699 } 700 701 desc->flags = htole32(RT2560_RX_BUSY); 702 desc->physaddr = htole32(physaddr); 703 } 704 705 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 706 707 return 0; 708 709 fail: rt2560_free_rx_ring(sc, ring); 710 return error; 711 } 712 713 static void 714 rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 715 { 716 int i; 717 718 for (i = 0; i < ring->count; i++) { 719 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 720 ring->data[i].drop = 0; 721 } 722 723 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 724 725 ring->cur = ring->next = 0; 726 ring->cur_decrypt = 0; 727 } 728 729 static void 730 rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 731 { 732 struct rt2560_rx_data *data; 733 int i; 734 735 if (ring->desc != NULL) { 736 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 737 BUS_DMASYNC_POSTWRITE); 738 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 739 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 740 } 741 742 if (ring->desc_dmat != NULL) 743 bus_dma_tag_destroy(ring->desc_dmat); 744 745 if (ring->data != NULL) { 746 for (i = 0; i < ring->count; i++) { 747 data = &ring->data[i]; 748 749 if (data->m != NULL) { 750 bus_dmamap_sync(ring->data_dmat, data->map, 751 BUS_DMASYNC_POSTREAD); 752 bus_dmamap_unload(ring->data_dmat, data->map); 753 m_freem(data->m); 754 } 755 756 if (data->map != NULL) 757 bus_dmamap_destroy(ring->data_dmat, data->map); 758 } 759 760 free(ring->data, M_DEVBUF); 761 } 762 763 if (ring->data_dmat != NULL) 764 bus_dma_tag_destroy(ring->data_dmat); 765 } 766 767 static struct ieee80211_node * 768 rt2560_node_alloc(struct ieee80211vap *vap, 769 const uint8_t mac[IEEE80211_ADDR_LEN]) 770 { 771 struct rt2560_node *rn; 772 773 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE, 774 M_NOWAIT | M_ZERO); 775 776 return (rn != NULL) ? &rn->ni : NULL; 777 } 778 779 static void 780 rt2560_newassoc(struct ieee80211_node *ni, int isnew) 781 { 782 struct ieee80211vap *vap = ni->ni_vap; 783 784 ieee80211_amrr_node_init(&RT2560_VAP(vap)->amrr, 785 &RT2560_NODE(ni)->amrr, ni); 786 } 787 788 static int 789 rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 790 { 791 struct rt2560_vap *rvp = RT2560_VAP(vap); 792 struct ifnet *ifp = vap->iv_ic->ic_ifp; 793 struct rt2560_softc *sc = ifp->if_softc; 794 int error; 795 796 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 797 /* abort TSF synchronization */ 798 RAL_WRITE(sc, RT2560_CSR14, 0); 799 800 /* turn association led off */ 801 rt2560_update_led(sc, 0, 0); 802 } 803 804 error = rvp->ral_newstate(vap, nstate, arg); 805 806 if (error == 0 && nstate == IEEE80211_S_RUN) { 807 struct ieee80211_node *ni = vap->iv_bss; 808 struct mbuf *m; 809 810 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 811 rt2560_update_plcp(sc); 812 rt2560_set_basicrates(sc); 813 rt2560_set_bssid(sc, ni->ni_bssid); 814 } 815 816 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 817 vap->iv_opmode == IEEE80211_M_IBSS || 818 vap->iv_opmode == IEEE80211_M_MBSS) { 819 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 820 if (m == NULL) { 821 if_printf(ifp, "could not allocate beacon\n"); 822 return ENOBUFS; 823 } 824 ieee80211_ref_node(ni); 825 error = rt2560_tx_bcn(sc, m, ni); 826 if (error != 0) 827 return error; 828 } 829 830 /* turn assocation led on */ 831 rt2560_update_led(sc, 1, 0); 832 833 if (vap->iv_opmode != IEEE80211_M_MONITOR) 834 rt2560_enable_tsf_sync(sc); 835 else 836 rt2560_enable_tsf(sc); 837 } 838 return error; 839 } 840 841 /* 842 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 843 * 93C66). 844 */ 845 static uint16_t 846 rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 847 { 848 uint32_t tmp; 849 uint16_t val; 850 int n; 851 852 /* clock C once before the first command */ 853 RT2560_EEPROM_CTL(sc, 0); 854 855 RT2560_EEPROM_CTL(sc, RT2560_S); 856 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 857 RT2560_EEPROM_CTL(sc, RT2560_S); 858 859 /* write start bit (1) */ 860 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 861 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 862 863 /* write READ opcode (10) */ 864 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 865 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 866 RT2560_EEPROM_CTL(sc, RT2560_S); 867 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 868 869 /* write address (A5-A0 or A7-A0) */ 870 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 871 for (; n >= 0; n--) { 872 RT2560_EEPROM_CTL(sc, RT2560_S | 873 (((addr >> n) & 1) << RT2560_SHIFT_D)); 874 RT2560_EEPROM_CTL(sc, RT2560_S | 875 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 876 } 877 878 RT2560_EEPROM_CTL(sc, RT2560_S); 879 880 /* read data Q15-Q0 */ 881 val = 0; 882 for (n = 15; n >= 0; n--) { 883 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 884 tmp = RAL_READ(sc, RT2560_CSR21); 885 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 886 RT2560_EEPROM_CTL(sc, RT2560_S); 887 } 888 889 RT2560_EEPROM_CTL(sc, 0); 890 891 /* clear Chip Select and clock C */ 892 RT2560_EEPROM_CTL(sc, RT2560_S); 893 RT2560_EEPROM_CTL(sc, 0); 894 RT2560_EEPROM_CTL(sc, RT2560_C); 895 896 return val; 897 } 898 899 /* 900 * Some frames were processed by the hardware cipher engine and are ready for 901 * transmission. 902 */ 903 static void 904 rt2560_encryption_intr(struct rt2560_softc *sc) 905 { 906 struct rt2560_tx_desc *desc; 907 int hw; 908 909 /* retrieve last descriptor index processed by cipher engine */ 910 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 911 hw /= RT2560_TX_DESC_SIZE; 912 913 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 914 BUS_DMASYNC_POSTREAD); 915 916 while (sc->txq.next_encrypt != hw) { 917 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 918 printf("hw encrypt %d, cur_encrypt %d\n", hw, 919 sc->txq.cur_encrypt); 920 break; 921 } 922 923 desc = &sc->txq.desc[sc->txq.next_encrypt]; 924 925 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 926 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 927 break; 928 929 /* for TKIP, swap eiv field to fix a bug in ASIC */ 930 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 931 RT2560_TX_CIPHER_TKIP) 932 desc->eiv = bswap32(desc->eiv); 933 934 /* mark the frame ready for transmission */ 935 desc->flags |= htole32(RT2560_TX_VALID); 936 desc->flags |= htole32(RT2560_TX_BUSY); 937 938 DPRINTFN(sc, 15, "encryption done idx=%u\n", 939 sc->txq.next_encrypt); 940 941 sc->txq.next_encrypt = 942 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 943 } 944 945 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 946 BUS_DMASYNC_PREWRITE); 947 948 /* kick Tx */ 949 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 950 } 951 952 static void 953 rt2560_tx_intr(struct rt2560_softc *sc) 954 { 955 struct ifnet *ifp = sc->sc_ifp; 956 struct rt2560_tx_desc *desc; 957 struct rt2560_tx_data *data; 958 struct rt2560_node *rn; 959 struct mbuf *m; 960 uint32_t flags; 961 int retrycnt; 962 963 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 964 BUS_DMASYNC_POSTREAD); 965 966 for (;;) { 967 desc = &sc->txq.desc[sc->txq.next]; 968 data = &sc->txq.data[sc->txq.next]; 969 970 flags = le32toh(desc->flags); 971 if ((flags & RT2560_TX_BUSY) || 972 (flags & RT2560_TX_CIPHER_BUSY) || 973 !(flags & RT2560_TX_VALID)) 974 break; 975 976 rn = (struct rt2560_node *)data->ni; 977 m = data->m; 978 979 switch (flags & RT2560_TX_RESULT_MASK) { 980 case RT2560_TX_SUCCESS: 981 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 982 if (data->rix != IEEE80211_FIXED_RATE_NONE) 983 ieee80211_amrr_tx_complete(&rn->amrr, 984 IEEE80211_AMRR_SUCCESS, 0); 985 ifp->if_opackets++; 986 break; 987 988 case RT2560_TX_SUCCESS_RETRY: 989 retrycnt = RT2560_TX_RETRYCNT(flags); 990 991 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 992 retrycnt); 993 if (data->rix != IEEE80211_FIXED_RATE_NONE) 994 ieee80211_amrr_tx_complete(&rn->amrr, 995 IEEE80211_AMRR_SUCCESS, retrycnt); 996 ifp->if_opackets++; 997 break; 998 999 case RT2560_TX_FAIL_RETRY: 1000 retrycnt = RT2560_TX_RETRYCNT(flags); 1001 1002 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 1003 retrycnt); 1004 if (data->rix != IEEE80211_FIXED_RATE_NONE) 1005 ieee80211_amrr_tx_complete(&rn->amrr, 1006 IEEE80211_AMRR_FAILURE, retrycnt); 1007 ifp->if_oerrors++; 1008 break; 1009 1010 case RT2560_TX_FAIL_INVALID: 1011 case RT2560_TX_FAIL_OTHER: 1012 default: 1013 device_printf(sc->sc_dev, "sending data frame failed " 1014 "0x%08x\n", flags); 1015 ifp->if_oerrors++; 1016 } 1017 1018 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1019 BUS_DMASYNC_POSTWRITE); 1020 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1021 m_freem(m); 1022 data->m = NULL; 1023 ieee80211_free_node(data->ni); 1024 data->ni = NULL; 1025 1026 /* descriptor is no longer valid */ 1027 desc->flags &= ~htole32(RT2560_TX_VALID); 1028 1029 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1030 1031 sc->txq.queued--; 1032 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1033 } 1034 1035 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1036 BUS_DMASYNC_PREWRITE); 1037 1038 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1039 sc->sc_tx_timer = 0; 1040 1041 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1042 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1043 if ((sc->sc_flags & 1044 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1045 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1046 rt2560_start_locked(ifp); 1047 } 1048 } 1049 1050 static void 1051 rt2560_prio_intr(struct rt2560_softc *sc) 1052 { 1053 struct ifnet *ifp = sc->sc_ifp; 1054 struct rt2560_tx_desc *desc; 1055 struct rt2560_tx_data *data; 1056 struct ieee80211_node *ni; 1057 struct mbuf *m; 1058 int flags; 1059 1060 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1061 BUS_DMASYNC_POSTREAD); 1062 1063 for (;;) { 1064 desc = &sc->prioq.desc[sc->prioq.next]; 1065 data = &sc->prioq.data[sc->prioq.next]; 1066 1067 flags = le32toh(desc->flags); 1068 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1069 break; 1070 1071 switch (flags & RT2560_TX_RESULT_MASK) { 1072 case RT2560_TX_SUCCESS: 1073 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1074 break; 1075 1076 case RT2560_TX_SUCCESS_RETRY: 1077 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1078 (flags >> 5) & 0x7); 1079 break; 1080 1081 case RT2560_TX_FAIL_RETRY: 1082 DPRINTFN(sc, 9, "%s\n", 1083 "sending mgt frame failed (too much retries)"); 1084 break; 1085 1086 case RT2560_TX_FAIL_INVALID: 1087 case RT2560_TX_FAIL_OTHER: 1088 default: 1089 device_printf(sc->sc_dev, "sending mgt frame failed " 1090 "0x%08x\n", flags); 1091 break; 1092 } 1093 1094 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1095 BUS_DMASYNC_POSTWRITE); 1096 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1097 1098 m = data->m; 1099 data->m = NULL; 1100 ni = data->ni; 1101 data->ni = NULL; 1102 1103 /* descriptor is no longer valid */ 1104 desc->flags &= ~htole32(RT2560_TX_VALID); 1105 1106 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1107 1108 sc->prioq.queued--; 1109 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1110 1111 if (m->m_flags & M_TXCB) 1112 ieee80211_process_callback(ni, m, 1113 (flags & RT2560_TX_RESULT_MASK) &~ 1114 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1115 m_freem(m); 1116 ieee80211_free_node(ni); 1117 } 1118 1119 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1120 BUS_DMASYNC_PREWRITE); 1121 1122 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1123 sc->sc_tx_timer = 0; 1124 1125 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1126 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1127 if ((sc->sc_flags & 1128 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1129 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1130 rt2560_start_locked(ifp); 1131 } 1132 } 1133 1134 /* 1135 * Some frames were processed by the hardware cipher engine and are ready for 1136 * handoff to the IEEE802.11 layer. 1137 */ 1138 static void 1139 rt2560_decryption_intr(struct rt2560_softc *sc) 1140 { 1141 struct ifnet *ifp = sc->sc_ifp; 1142 struct ieee80211com *ic = ifp->if_l2com; 1143 struct rt2560_rx_desc *desc; 1144 struct rt2560_rx_data *data; 1145 bus_addr_t physaddr; 1146 struct ieee80211_frame *wh; 1147 struct ieee80211_node *ni; 1148 struct mbuf *mnew, *m; 1149 int hw, error; 1150 int8_t rssi, nf; 1151 1152 /* retrieve last decriptor index processed by cipher engine */ 1153 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1154 hw /= RT2560_RX_DESC_SIZE; 1155 1156 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1157 BUS_DMASYNC_POSTREAD); 1158 1159 for (; sc->rxq.cur_decrypt != hw;) { 1160 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1161 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1162 1163 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1164 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1165 break; 1166 1167 if (data->drop) { 1168 ifp->if_ierrors++; 1169 goto skip; 1170 } 1171 1172 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1173 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1174 ifp->if_ierrors++; 1175 goto skip; 1176 } 1177 1178 /* 1179 * Try to allocate a new mbuf for this ring element and load it 1180 * before processing the current mbuf. If the ring element 1181 * cannot be loaded, drop the received packet and reuse the old 1182 * mbuf. In the unlikely case that the old mbuf can't be 1183 * reloaded either, explicitly panic. 1184 */ 1185 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1186 if (mnew == NULL) { 1187 ifp->if_ierrors++; 1188 goto skip; 1189 } 1190 1191 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1192 BUS_DMASYNC_POSTREAD); 1193 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1194 1195 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1196 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1197 &physaddr, 0); 1198 if (error != 0) { 1199 m_freem(mnew); 1200 1201 /* try to reload the old mbuf */ 1202 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1203 mtod(data->m, void *), MCLBYTES, 1204 rt2560_dma_map_addr, &physaddr, 0); 1205 if (error != 0) { 1206 /* very unlikely that it will fail... */ 1207 panic("%s: could not load old rx mbuf", 1208 device_get_name(sc->sc_dev)); 1209 } 1210 ifp->if_ierrors++; 1211 goto skip; 1212 } 1213 1214 /* 1215 * New mbuf successfully loaded, update Rx ring and continue 1216 * processing. 1217 */ 1218 m = data->m; 1219 data->m = mnew; 1220 desc->physaddr = htole32(physaddr); 1221 1222 /* finalize mbuf */ 1223 m->m_pkthdr.rcvif = ifp; 1224 m->m_pkthdr.len = m->m_len = 1225 (le32toh(desc->flags) >> 16) & 0xfff; 1226 1227 rssi = RT2560_RSSI(sc, desc->rssi); 1228 nf = RT2560_NOISE_FLOOR; 1229 if (ieee80211_radiotap_active(ic)) { 1230 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1231 uint32_t tsf_lo, tsf_hi; 1232 1233 /* get timestamp (low and high 32 bits) */ 1234 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1235 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1236 1237 tap->wr_tsf = 1238 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1239 tap->wr_flags = 0; 1240 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1241 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1242 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1243 tap->wr_antenna = sc->rx_ant; 1244 tap->wr_antsignal = nf + rssi; 1245 tap->wr_antnoise = nf; 1246 } 1247 1248 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1249 RAL_UNLOCK(sc); 1250 wh = mtod(m, struct ieee80211_frame *); 1251 ni = ieee80211_find_rxnode(ic, 1252 (struct ieee80211_frame_min *)wh); 1253 if (ni != NULL) { 1254 (void) ieee80211_input(ni, m, rssi, nf); 1255 ieee80211_free_node(ni); 1256 } else 1257 (void) ieee80211_input_all(ic, m, rssi, nf); 1258 1259 RAL_LOCK(sc); 1260 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1261 skip: desc->flags = htole32(RT2560_RX_BUSY); 1262 1263 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1264 1265 sc->rxq.cur_decrypt = 1266 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1267 } 1268 1269 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1270 BUS_DMASYNC_PREWRITE); 1271 } 1272 1273 /* 1274 * Some frames were received. Pass them to the hardware cipher engine before 1275 * sending them to the 802.11 layer. 1276 */ 1277 static void 1278 rt2560_rx_intr(struct rt2560_softc *sc) 1279 { 1280 struct rt2560_rx_desc *desc; 1281 struct rt2560_rx_data *data; 1282 1283 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1284 BUS_DMASYNC_POSTREAD); 1285 1286 for (;;) { 1287 desc = &sc->rxq.desc[sc->rxq.cur]; 1288 data = &sc->rxq.data[sc->rxq.cur]; 1289 1290 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1291 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1292 break; 1293 1294 data->drop = 0; 1295 1296 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1297 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1298 /* 1299 * This should not happen since we did not request 1300 * to receive those frames when we filled RXCSR0. 1301 */ 1302 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1303 le32toh(desc->flags)); 1304 data->drop = 1; 1305 } 1306 1307 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1308 DPRINTFN(sc, 5, "%s\n", "bad length"); 1309 data->drop = 1; 1310 } 1311 1312 /* mark the frame for decryption */ 1313 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1314 1315 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1316 1317 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1318 } 1319 1320 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1321 BUS_DMASYNC_PREWRITE); 1322 1323 /* kick decrypt */ 1324 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1325 } 1326 1327 static void 1328 rt2560_beacon_update(struct ieee80211vap *vap, int item) 1329 { 1330 struct rt2560_vap *rvp = RT2560_VAP(vap); 1331 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1332 1333 setbit(bo->bo_flags, item); 1334 } 1335 1336 /* 1337 * This function is called periodically in IBSS mode when a new beacon must be 1338 * sent out. 1339 */ 1340 static void 1341 rt2560_beacon_expire(struct rt2560_softc *sc) 1342 { 1343 struct ifnet *ifp = sc->sc_ifp; 1344 struct ieee80211com *ic = ifp->if_l2com; 1345 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1346 struct rt2560_vap *rvp = RT2560_VAP(vap); 1347 struct rt2560_tx_data *data; 1348 1349 if (ic->ic_opmode != IEEE80211_M_IBSS && 1350 ic->ic_opmode != IEEE80211_M_HOSTAP && 1351 ic->ic_opmode != IEEE80211_M_MBSS) 1352 return; 1353 1354 data = &sc->bcnq.data[sc->bcnq.next]; 1355 /* 1356 * Don't send beacon if bsschan isn't set 1357 */ 1358 if (data->ni == NULL) 1359 return; 1360 1361 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1362 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1363 1364 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1365 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1366 1367 rt2560_tx_bcn(sc, data->m, data->ni); 1368 1369 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1370 1371 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1372 } 1373 1374 /* ARGSUSED */ 1375 static void 1376 rt2560_wakeup_expire(struct rt2560_softc *sc) 1377 { 1378 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1379 } 1380 1381 void 1382 rt2560_intr(void *arg) 1383 { 1384 struct rt2560_softc *sc = arg; 1385 struct ifnet *ifp = sc->sc_ifp; 1386 uint32_t r; 1387 1388 RAL_LOCK(sc); 1389 1390 /* disable interrupts */ 1391 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1392 1393 /* don't re-enable interrupts if we're shutting down */ 1394 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1395 RAL_UNLOCK(sc); 1396 return; 1397 } 1398 1399 r = RAL_READ(sc, RT2560_CSR7); 1400 RAL_WRITE(sc, RT2560_CSR7, r); 1401 1402 if (r & RT2560_BEACON_EXPIRE) 1403 rt2560_beacon_expire(sc); 1404 1405 if (r & RT2560_WAKEUP_EXPIRE) 1406 rt2560_wakeup_expire(sc); 1407 1408 if (r & RT2560_ENCRYPTION_DONE) 1409 rt2560_encryption_intr(sc); 1410 1411 if (r & RT2560_TX_DONE) 1412 rt2560_tx_intr(sc); 1413 1414 if (r & RT2560_PRIO_DONE) 1415 rt2560_prio_intr(sc); 1416 1417 if (r & RT2560_DECRYPTION_DONE) 1418 rt2560_decryption_intr(sc); 1419 1420 if (r & RT2560_RX_DONE) { 1421 rt2560_rx_intr(sc); 1422 rt2560_encryption_intr(sc); 1423 } 1424 1425 /* re-enable interrupts */ 1426 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1427 1428 RAL_UNLOCK(sc); 1429 } 1430 1431 #define RAL_SIFS 10 /* us */ 1432 1433 #define RT2560_TXRX_TURNAROUND 10 /* us */ 1434 1435 static uint8_t 1436 rt2560_plcp_signal(int rate) 1437 { 1438 switch (rate) { 1439 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1440 case 12: return 0xb; 1441 case 18: return 0xf; 1442 case 24: return 0xa; 1443 case 36: return 0xe; 1444 case 48: return 0x9; 1445 case 72: return 0xd; 1446 case 96: return 0x8; 1447 case 108: return 0xc; 1448 1449 /* CCK rates (NB: not IEEE std, device-specific) */ 1450 case 2: return 0x0; 1451 case 4: return 0x1; 1452 case 11: return 0x2; 1453 case 22: return 0x3; 1454 } 1455 return 0xff; /* XXX unsupported/unknown rate */ 1456 } 1457 1458 static void 1459 rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1460 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1461 { 1462 struct ifnet *ifp = sc->sc_ifp; 1463 struct ieee80211com *ic = ifp->if_l2com; 1464 uint16_t plcp_length; 1465 int remainder; 1466 1467 desc->flags = htole32(flags); 1468 desc->flags |= htole32(len << 16); 1469 1470 desc->physaddr = htole32(physaddr); 1471 desc->wme = htole16( 1472 RT2560_AIFSN(2) | 1473 RT2560_LOGCWMIN(3) | 1474 RT2560_LOGCWMAX(8)); 1475 1476 /* setup PLCP fields */ 1477 desc->plcp_signal = rt2560_plcp_signal(rate); 1478 desc->plcp_service = 4; 1479 1480 len += IEEE80211_CRC_LEN; 1481 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1482 desc->flags |= htole32(RT2560_TX_OFDM); 1483 1484 plcp_length = len & 0xfff; 1485 desc->plcp_length_hi = plcp_length >> 6; 1486 desc->plcp_length_lo = plcp_length & 0x3f; 1487 } else { 1488 plcp_length = (16 * len + rate - 1) / rate; 1489 if (rate == 22) { 1490 remainder = (16 * len) % 22; 1491 if (remainder != 0 && remainder < 7) 1492 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1493 } 1494 desc->plcp_length_hi = plcp_length >> 8; 1495 desc->plcp_length_lo = plcp_length & 0xff; 1496 1497 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1498 desc->plcp_signal |= 0x08; 1499 } 1500 1501 if (!encrypt) 1502 desc->flags |= htole32(RT2560_TX_VALID); 1503 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1504 : htole32(RT2560_TX_BUSY); 1505 } 1506 1507 static int 1508 rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1509 struct ieee80211_node *ni) 1510 { 1511 struct ieee80211vap *vap = ni->ni_vap; 1512 struct rt2560_tx_desc *desc; 1513 struct rt2560_tx_data *data; 1514 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1515 int nsegs, rate, error; 1516 1517 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1518 data = &sc->bcnq.data[sc->bcnq.cur]; 1519 1520 /* XXX maybe a separate beacon rate? */ 1521 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1522 1523 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1524 segs, &nsegs, BUS_DMA_NOWAIT); 1525 if (error != 0) { 1526 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1527 error); 1528 m_freem(m0); 1529 return error; 1530 } 1531 1532 if (ieee80211_radiotap_active_vap(vap)) { 1533 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1534 1535 tap->wt_flags = 0; 1536 tap->wt_rate = rate; 1537 tap->wt_antenna = sc->tx_ant; 1538 1539 ieee80211_radiotap_tx(vap, m0); 1540 } 1541 1542 data->m = m0; 1543 data->ni = ni; 1544 1545 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1546 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1547 1548 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1549 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1550 1551 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1552 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1553 BUS_DMASYNC_PREWRITE); 1554 1555 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1556 1557 return 0; 1558 } 1559 1560 static int 1561 rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1562 struct ieee80211_node *ni) 1563 { 1564 struct ieee80211vap *vap = ni->ni_vap; 1565 struct ieee80211com *ic = ni->ni_ic; 1566 struct rt2560_tx_desc *desc; 1567 struct rt2560_tx_data *data; 1568 struct ieee80211_frame *wh; 1569 struct ieee80211_key *k; 1570 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1571 uint16_t dur; 1572 uint32_t flags = 0; 1573 int nsegs, rate, error; 1574 1575 desc = &sc->prioq.desc[sc->prioq.cur]; 1576 data = &sc->prioq.data[sc->prioq.cur]; 1577 1578 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1579 1580 wh = mtod(m0, struct ieee80211_frame *); 1581 1582 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1583 k = ieee80211_crypto_encap(ni, m0); 1584 if (k == NULL) { 1585 m_freem(m0); 1586 return ENOBUFS; 1587 } 1588 } 1589 1590 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1591 segs, &nsegs, 0); 1592 if (error != 0) { 1593 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1594 error); 1595 m_freem(m0); 1596 return error; 1597 } 1598 1599 if (ieee80211_radiotap_active_vap(vap)) { 1600 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1601 1602 tap->wt_flags = 0; 1603 tap->wt_rate = rate; 1604 tap->wt_antenna = sc->tx_ant; 1605 1606 ieee80211_radiotap_tx(vap, m0); 1607 } 1608 1609 data->m = m0; 1610 data->ni = ni; 1611 /* management frames are not taken into account for amrr */ 1612 data->rix = IEEE80211_FIXED_RATE_NONE; 1613 1614 wh = mtod(m0, struct ieee80211_frame *); 1615 1616 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1617 flags |= RT2560_TX_ACK; 1618 1619 dur = ieee80211_ack_duration(ic->ic_rt, 1620 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1621 *(uint16_t *)wh->i_dur = htole16(dur); 1622 1623 /* tell hardware to add timestamp for probe responses */ 1624 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1625 IEEE80211_FC0_TYPE_MGT && 1626 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1627 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1628 flags |= RT2560_TX_TIMESTAMP; 1629 } 1630 1631 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1632 segs->ds_addr); 1633 1634 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1635 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1636 BUS_DMASYNC_PREWRITE); 1637 1638 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1639 m0->m_pkthdr.len, sc->prioq.cur, rate); 1640 1641 /* kick prio */ 1642 sc->prioq.queued++; 1643 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1644 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1645 1646 return 0; 1647 } 1648 1649 static int 1650 rt2560_sendprot(struct rt2560_softc *sc, 1651 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1652 { 1653 struct ieee80211com *ic = ni->ni_ic; 1654 const struct ieee80211_frame *wh; 1655 struct rt2560_tx_desc *desc; 1656 struct rt2560_tx_data *data; 1657 struct mbuf *mprot; 1658 int protrate, ackrate, pktlen, flags, isshort, error; 1659 uint16_t dur; 1660 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1661 int nsegs; 1662 1663 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1664 ("protection %d", prot)); 1665 1666 wh = mtod(m, const struct ieee80211_frame *); 1667 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1668 1669 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1670 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1671 1672 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1673 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1674 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1675 flags = RT2560_TX_MORE_FRAG; 1676 if (prot == IEEE80211_PROT_RTSCTS) { 1677 /* NB: CTS is the same size as an ACK */ 1678 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1679 flags |= RT2560_TX_ACK; 1680 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1681 } else { 1682 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1683 } 1684 if (mprot == NULL) { 1685 /* XXX stat + msg */ 1686 return ENOBUFS; 1687 } 1688 1689 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1690 data = &sc->txq.data[sc->txq.cur_encrypt]; 1691 1692 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1693 mprot, segs, &nsegs, 0); 1694 if (error != 0) { 1695 device_printf(sc->sc_dev, 1696 "could not map mbuf (error %d)\n", error); 1697 m_freem(mprot); 1698 return error; 1699 } 1700 1701 data->m = mprot; 1702 data->ni = ieee80211_ref_node(ni); 1703 /* ctl frames are not taken into account for amrr */ 1704 data->rix = IEEE80211_FIXED_RATE_NONE; 1705 1706 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1707 segs->ds_addr); 1708 1709 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1710 BUS_DMASYNC_PREWRITE); 1711 1712 sc->txq.queued++; 1713 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1714 1715 return 0; 1716 } 1717 1718 static int 1719 rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1720 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1721 { 1722 struct ieee80211vap *vap = ni->ni_vap; 1723 struct ieee80211com *ic = ni->ni_ic; 1724 struct rt2560_tx_desc *desc; 1725 struct rt2560_tx_data *data; 1726 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1727 uint32_t flags; 1728 int nsegs, rate, error; 1729 1730 desc = &sc->prioq.desc[sc->prioq.cur]; 1731 data = &sc->prioq.data[sc->prioq.cur]; 1732 1733 rate = params->ibp_rate0; 1734 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1735 /* XXX fall back to mcast/mgmt rate? */ 1736 m_freem(m0); 1737 return EINVAL; 1738 } 1739 1740 flags = 0; 1741 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1742 flags |= RT2560_TX_ACK; 1743 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1744 error = rt2560_sendprot(sc, m0, ni, 1745 params->ibp_flags & IEEE80211_BPF_RTS ? 1746 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1747 rate); 1748 if (error) { 1749 m_freem(m0); 1750 return error; 1751 } 1752 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1753 } 1754 1755 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1756 segs, &nsegs, 0); 1757 if (error != 0) { 1758 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1759 error); 1760 m_freem(m0); 1761 return error; 1762 } 1763 1764 if (ieee80211_radiotap_active_vap(vap)) { 1765 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1766 1767 tap->wt_flags = 0; 1768 tap->wt_rate = rate; 1769 tap->wt_antenna = sc->tx_ant; 1770 1771 ieee80211_radiotap_tx(ni->ni_vap, m0); 1772 } 1773 1774 data->m = m0; 1775 data->ni = ni; 1776 1777 /* XXX need to setup descriptor ourself */ 1778 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1779 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1780 segs->ds_addr); 1781 1782 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1783 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1784 BUS_DMASYNC_PREWRITE); 1785 1786 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1787 m0->m_pkthdr.len, sc->prioq.cur, rate); 1788 1789 /* kick prio */ 1790 sc->prioq.queued++; 1791 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1792 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1793 1794 return 0; 1795 } 1796 1797 static int 1798 rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1799 struct ieee80211_node *ni) 1800 { 1801 struct ieee80211vap *vap = ni->ni_vap; 1802 struct ieee80211com *ic = ni->ni_ic; 1803 struct rt2560_tx_desc *desc; 1804 struct rt2560_tx_data *data; 1805 struct ieee80211_frame *wh; 1806 const struct ieee80211_txparam *tp; 1807 struct ieee80211_key *k; 1808 struct mbuf *mnew; 1809 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1810 uint16_t dur; 1811 uint32_t flags; 1812 int nsegs, rate, error; 1813 1814 wh = mtod(m0, struct ieee80211_frame *); 1815 1816 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1817 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1818 rate = tp->mcastrate; 1819 } else if (m0->m_flags & M_EAPOL) { 1820 rate = tp->mgmtrate; 1821 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1822 rate = tp->ucastrate; 1823 } else { 1824 (void) ieee80211_amrr_choose(ni, &RT2560_NODE(ni)->amrr); 1825 rate = ni->ni_txrate; 1826 } 1827 1828 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1829 k = ieee80211_crypto_encap(ni, m0); 1830 if (k == NULL) { 1831 m_freem(m0); 1832 return ENOBUFS; 1833 } 1834 1835 /* packet header may have moved, reset our local pointer */ 1836 wh = mtod(m0, struct ieee80211_frame *); 1837 } 1838 1839 flags = 0; 1840 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1841 int prot = IEEE80211_PROT_NONE; 1842 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1843 prot = IEEE80211_PROT_RTSCTS; 1844 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1845 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1846 prot = ic->ic_protmode; 1847 if (prot != IEEE80211_PROT_NONE) { 1848 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1849 if (error) { 1850 m_freem(m0); 1851 return error; 1852 } 1853 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1854 } 1855 } 1856 1857 data = &sc->txq.data[sc->txq.cur_encrypt]; 1858 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1859 1860 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1861 segs, &nsegs, 0); 1862 if (error != 0 && error != EFBIG) { 1863 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1864 error); 1865 m_freem(m0); 1866 return error; 1867 } 1868 if (error != 0) { 1869 mnew = m_defrag(m0, M_DONTWAIT); 1870 if (mnew == NULL) { 1871 device_printf(sc->sc_dev, 1872 "could not defragment mbuf\n"); 1873 m_freem(m0); 1874 return ENOBUFS; 1875 } 1876 m0 = mnew; 1877 1878 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1879 m0, segs, &nsegs, 0); 1880 if (error != 0) { 1881 device_printf(sc->sc_dev, 1882 "could not map mbuf (error %d)\n", error); 1883 m_freem(m0); 1884 return error; 1885 } 1886 1887 /* packet header may have moved, reset our local pointer */ 1888 wh = mtod(m0, struct ieee80211_frame *); 1889 } 1890 1891 if (ieee80211_radiotap_active_vap(vap)) { 1892 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1893 1894 tap->wt_flags = 0; 1895 tap->wt_rate = rate; 1896 tap->wt_antenna = sc->tx_ant; 1897 1898 ieee80211_radiotap_tx(vap, m0); 1899 } 1900 1901 data->m = m0; 1902 data->ni = ni; 1903 1904 /* remember link conditions for rate adaptation algorithm */ 1905 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1906 data->rix = ni->ni_txrate; 1907 /* XXX probably need last rssi value and not avg */ 1908 data->rssi = ic->ic_node_getrssi(ni); 1909 } else 1910 data->rix = IEEE80211_FIXED_RATE_NONE; 1911 1912 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1913 flags |= RT2560_TX_ACK; 1914 1915 dur = ieee80211_ack_duration(ic->ic_rt, 1916 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1917 *(uint16_t *)wh->i_dur = htole16(dur); 1918 } 1919 1920 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1921 segs->ds_addr); 1922 1923 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1924 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1925 BUS_DMASYNC_PREWRITE); 1926 1927 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1928 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1929 1930 /* kick encrypt */ 1931 sc->txq.queued++; 1932 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1933 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1934 1935 return 0; 1936 } 1937 1938 static void 1939 rt2560_start_locked(struct ifnet *ifp) 1940 { 1941 struct rt2560_softc *sc = ifp->if_softc; 1942 struct mbuf *m; 1943 struct ieee80211_node *ni; 1944 1945 RAL_LOCK_ASSERT(sc); 1946 1947 for (;;) { 1948 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1949 if (m == NULL) 1950 break; 1951 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1952 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1953 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1954 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1955 break; 1956 } 1957 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1958 if (rt2560_tx_data(sc, m, ni) != 0) { 1959 ieee80211_free_node(ni); 1960 ifp->if_oerrors++; 1961 break; 1962 } 1963 1964 sc->sc_tx_timer = 5; 1965 } 1966 } 1967 1968 static void 1969 rt2560_start(struct ifnet *ifp) 1970 { 1971 struct rt2560_softc *sc = ifp->if_softc; 1972 1973 RAL_LOCK(sc); 1974 rt2560_start_locked(ifp); 1975 RAL_UNLOCK(sc); 1976 } 1977 1978 static void 1979 rt2560_watchdog(void *arg) 1980 { 1981 struct rt2560_softc *sc = arg; 1982 struct ifnet *ifp = sc->sc_ifp; 1983 1984 RAL_LOCK_ASSERT(sc); 1985 1986 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1987 1988 if (sc->sc_invalid) /* card ejected */ 1989 return; 1990 1991 rt2560_encryption_intr(sc); 1992 rt2560_tx_intr(sc); 1993 1994 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1995 if_printf(ifp, "device timeout\n"); 1996 rt2560_init_locked(sc); 1997 ifp->if_oerrors++; 1998 /* NB: callout is reset in rt2560_init() */ 1999 return; 2000 } 2001 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2002 } 2003 2004 static int 2005 rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2006 { 2007 struct rt2560_softc *sc = ifp->if_softc; 2008 struct ieee80211com *ic = ifp->if_l2com; 2009 struct ifreq *ifr = (struct ifreq *) data; 2010 int error = 0, startall = 0; 2011 2012 switch (cmd) { 2013 case SIOCSIFFLAGS: 2014 RAL_LOCK(sc); 2015 if (ifp->if_flags & IFF_UP) { 2016 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2017 rt2560_init_locked(sc); 2018 startall = 1; 2019 } else 2020 rt2560_update_promisc(ifp); 2021 } else { 2022 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2023 rt2560_stop_locked(sc); 2024 } 2025 RAL_UNLOCK(sc); 2026 if (startall) 2027 ieee80211_start_all(ic); 2028 break; 2029 case SIOCGIFMEDIA: 2030 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2031 break; 2032 case SIOCGIFADDR: 2033 error = ether_ioctl(ifp, cmd, data); 2034 break; 2035 default: 2036 error = EINVAL; 2037 break; 2038 } 2039 return error; 2040 } 2041 2042 static void 2043 rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2044 { 2045 uint32_t tmp; 2046 int ntries; 2047 2048 for (ntries = 0; ntries < 100; ntries++) { 2049 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2050 break; 2051 DELAY(1); 2052 } 2053 if (ntries == 100) { 2054 device_printf(sc->sc_dev, "could not write to BBP\n"); 2055 return; 2056 } 2057 2058 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2059 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2060 2061 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2062 } 2063 2064 static uint8_t 2065 rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2066 { 2067 uint32_t val; 2068 int ntries; 2069 2070 for (ntries = 0; ntries < 100; ntries++) { 2071 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2072 break; 2073 DELAY(1); 2074 } 2075 if (ntries == 100) { 2076 device_printf(sc->sc_dev, "could not read from BBP\n"); 2077 return 0; 2078 } 2079 2080 val = RT2560_BBP_BUSY | reg << 8; 2081 RAL_WRITE(sc, RT2560_BBPCSR, val); 2082 2083 for (ntries = 0; ntries < 100; ntries++) { 2084 val = RAL_READ(sc, RT2560_BBPCSR); 2085 if (!(val & RT2560_BBP_BUSY)) 2086 return val & 0xff; 2087 DELAY(1); 2088 } 2089 2090 device_printf(sc->sc_dev, "could not read from BBP\n"); 2091 return 0; 2092 } 2093 2094 static void 2095 rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2096 { 2097 uint32_t tmp; 2098 int ntries; 2099 2100 for (ntries = 0; ntries < 100; ntries++) { 2101 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2102 break; 2103 DELAY(1); 2104 } 2105 if (ntries == 100) { 2106 device_printf(sc->sc_dev, "could not write to RF\n"); 2107 return; 2108 } 2109 2110 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2111 (reg & 0x3); 2112 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2113 2114 /* remember last written value in sc */ 2115 sc->rf_regs[reg] = val; 2116 2117 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2118 } 2119 2120 static void 2121 rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2122 { 2123 struct ifnet *ifp = sc->sc_ifp; 2124 struct ieee80211com *ic = ifp->if_l2com; 2125 uint8_t power, tmp; 2126 u_int i, chan; 2127 2128 chan = ieee80211_chan2ieee(ic, c); 2129 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2130 2131 if (IEEE80211_IS_CHAN_2GHZ(c)) 2132 power = min(sc->txpow[chan - 1], 31); 2133 else 2134 power = 31; 2135 2136 /* adjust txpower using ifconfig settings */ 2137 power -= (100 - ic->ic_txpowlimit) / 8; 2138 2139 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2140 2141 switch (sc->rf_rev) { 2142 case RT2560_RF_2522: 2143 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2144 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2145 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2146 break; 2147 2148 case RT2560_RF_2523: 2149 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2150 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2151 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2152 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2153 break; 2154 2155 case RT2560_RF_2524: 2156 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2157 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2158 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2159 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2160 break; 2161 2162 case RT2560_RF_2525: 2163 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2164 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2165 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2166 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2167 2168 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2169 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2170 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2171 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2172 break; 2173 2174 case RT2560_RF_2525E: 2175 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2176 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2177 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2178 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2179 break; 2180 2181 case RT2560_RF_2526: 2182 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2183 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2184 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2185 2186 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2187 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2188 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2189 break; 2190 2191 /* dual-band RF */ 2192 case RT2560_RF_5222: 2193 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2194 2195 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2196 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2197 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2198 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2199 break; 2200 default: 2201 printf("unknown ral rev=%d\n", sc->rf_rev); 2202 } 2203 2204 /* XXX */ 2205 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2206 /* set Japan filter bit for channel 14 */ 2207 tmp = rt2560_bbp_read(sc, 70); 2208 2209 tmp &= ~RT2560_JAPAN_FILTER; 2210 if (chan == 14) 2211 tmp |= RT2560_JAPAN_FILTER; 2212 2213 rt2560_bbp_write(sc, 70, tmp); 2214 2215 /* clear CRC errors */ 2216 RAL_READ(sc, RT2560_CNT0); 2217 } 2218 } 2219 2220 static void 2221 rt2560_set_channel(struct ieee80211com *ic) 2222 { 2223 struct ifnet *ifp = ic->ic_ifp; 2224 struct rt2560_softc *sc = ifp->if_softc; 2225 2226 RAL_LOCK(sc); 2227 rt2560_set_chan(sc, ic->ic_curchan); 2228 RAL_UNLOCK(sc); 2229 2230 } 2231 2232 #if 0 2233 /* 2234 * Disable RF auto-tuning. 2235 */ 2236 static void 2237 rt2560_disable_rf_tune(struct rt2560_softc *sc) 2238 { 2239 uint32_t tmp; 2240 2241 if (sc->rf_rev != RT2560_RF_2523) { 2242 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2243 rt2560_rf_write(sc, RAL_RF1, tmp); 2244 } 2245 2246 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2247 rt2560_rf_write(sc, RAL_RF3, tmp); 2248 2249 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2250 } 2251 #endif 2252 2253 /* 2254 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2255 * synchronization. 2256 */ 2257 static void 2258 rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2259 { 2260 struct ifnet *ifp = sc->sc_ifp; 2261 struct ieee80211com *ic = ifp->if_l2com; 2262 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2263 uint16_t logcwmin, preload; 2264 uint32_t tmp; 2265 2266 /* first, disable TSF synchronization */ 2267 RAL_WRITE(sc, RT2560_CSR14, 0); 2268 2269 tmp = 16 * vap->iv_bss->ni_intval; 2270 RAL_WRITE(sc, RT2560_CSR12, tmp); 2271 2272 RAL_WRITE(sc, RT2560_CSR13, 0); 2273 2274 logcwmin = 5; 2275 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2276 tmp = logcwmin << 16 | preload; 2277 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2278 2279 /* finally, enable TSF synchronization */ 2280 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2281 if (ic->ic_opmode == IEEE80211_M_STA) 2282 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2283 else 2284 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2285 RT2560_ENABLE_BEACON_GENERATOR; 2286 RAL_WRITE(sc, RT2560_CSR14, tmp); 2287 2288 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2289 } 2290 2291 static void 2292 rt2560_enable_tsf(struct rt2560_softc *sc) 2293 { 2294 RAL_WRITE(sc, RT2560_CSR14, 0); 2295 RAL_WRITE(sc, RT2560_CSR14, 2296 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2297 } 2298 2299 static void 2300 rt2560_update_plcp(struct rt2560_softc *sc) 2301 { 2302 struct ifnet *ifp = sc->sc_ifp; 2303 struct ieee80211com *ic = ifp->if_l2com; 2304 2305 /* no short preamble for 1Mbps */ 2306 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2307 2308 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2309 /* values taken from the reference driver */ 2310 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2311 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2312 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2313 } else { 2314 /* same values as above or'ed 0x8 */ 2315 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2316 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2317 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2318 } 2319 2320 DPRINTF(sc, "updating PLCP for %s preamble\n", 2321 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2322 } 2323 2324 /* 2325 * This function can be called by ieee80211_set_shortslottime(). Refer to 2326 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2327 */ 2328 static void 2329 rt2560_update_slot(struct ifnet *ifp) 2330 { 2331 struct rt2560_softc *sc = ifp->if_softc; 2332 struct ieee80211com *ic = ifp->if_l2com; 2333 uint8_t slottime; 2334 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2335 uint32_t tmp; 2336 2337 #ifndef FORCE_SLOTTIME 2338 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2339 #else 2340 /* 2341 * Setting slot time according to "short slot time" capability 2342 * in beacon/probe_resp seems to cause problem to acknowledge 2343 * certain AP's data frames transimitted at CCK/DS rates: the 2344 * problematic AP keeps retransmitting data frames, probably 2345 * because MAC level acks are not received by hardware. 2346 * So we cheat a little bit here by claiming we are capable of 2347 * "short slot time" but setting hardware slot time to the normal 2348 * slot time. ral(4) does not seem to have trouble to receive 2349 * frames transmitted using short slot time even if hardware 2350 * slot time is set to normal slot time. If we didn't use this 2351 * trick, we would have to claim that short slot time is not 2352 * supported; this would give relative poor RX performance 2353 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2354 * slot time. 2355 */ 2356 slottime = 20; 2357 #endif 2358 2359 /* update the MAC slot boundaries */ 2360 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2361 tx_pifs = tx_sifs + slottime; 2362 tx_difs = tx_sifs + 2 * slottime; 2363 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2364 2365 tmp = RAL_READ(sc, RT2560_CSR11); 2366 tmp = (tmp & ~0x1f00) | slottime << 8; 2367 RAL_WRITE(sc, RT2560_CSR11, tmp); 2368 2369 tmp = tx_pifs << 16 | tx_sifs; 2370 RAL_WRITE(sc, RT2560_CSR18, tmp); 2371 2372 tmp = eifs << 16 | tx_difs; 2373 RAL_WRITE(sc, RT2560_CSR19, tmp); 2374 2375 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2376 } 2377 2378 static void 2379 rt2560_set_basicrates(struct rt2560_softc *sc) 2380 { 2381 struct ifnet *ifp = sc->sc_ifp; 2382 struct ieee80211com *ic = ifp->if_l2com; 2383 2384 /* update basic rate set */ 2385 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2386 /* 11b basic rates: 1, 2Mbps */ 2387 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2388 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2389 /* 11a basic rates: 6, 12, 24Mbps */ 2390 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2391 } else { 2392 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2393 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2394 } 2395 } 2396 2397 static void 2398 rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2399 { 2400 uint32_t tmp; 2401 2402 /* set ON period to 70ms and OFF period to 30ms */ 2403 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2404 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2405 } 2406 2407 static void 2408 rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2409 { 2410 uint32_t tmp; 2411 2412 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2413 RAL_WRITE(sc, RT2560_CSR5, tmp); 2414 2415 tmp = bssid[4] | bssid[5] << 8; 2416 RAL_WRITE(sc, RT2560_CSR6, tmp); 2417 2418 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2419 } 2420 2421 static void 2422 rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2423 { 2424 uint32_t tmp; 2425 2426 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2427 RAL_WRITE(sc, RT2560_CSR3, tmp); 2428 2429 tmp = addr[4] | addr[5] << 8; 2430 RAL_WRITE(sc, RT2560_CSR4, tmp); 2431 2432 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2433 } 2434 2435 static void 2436 rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2437 { 2438 uint32_t tmp; 2439 2440 tmp = RAL_READ(sc, RT2560_CSR3); 2441 addr[0] = tmp & 0xff; 2442 addr[1] = (tmp >> 8) & 0xff; 2443 addr[2] = (tmp >> 16) & 0xff; 2444 addr[3] = (tmp >> 24); 2445 2446 tmp = RAL_READ(sc, RT2560_CSR4); 2447 addr[4] = tmp & 0xff; 2448 addr[5] = (tmp >> 8) & 0xff; 2449 } 2450 2451 static void 2452 rt2560_update_promisc(struct ifnet *ifp) 2453 { 2454 struct rt2560_softc *sc = ifp->if_softc; 2455 uint32_t tmp; 2456 2457 tmp = RAL_READ(sc, RT2560_RXCSR0); 2458 2459 tmp &= ~RT2560_DROP_NOT_TO_ME; 2460 if (!(ifp->if_flags & IFF_PROMISC)) 2461 tmp |= RT2560_DROP_NOT_TO_ME; 2462 2463 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2464 2465 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2466 "entering" : "leaving"); 2467 } 2468 2469 static const char * 2470 rt2560_get_rf(int rev) 2471 { 2472 switch (rev) { 2473 case RT2560_RF_2522: return "RT2522"; 2474 case RT2560_RF_2523: return "RT2523"; 2475 case RT2560_RF_2524: return "RT2524"; 2476 case RT2560_RF_2525: return "RT2525"; 2477 case RT2560_RF_2525E: return "RT2525e"; 2478 case RT2560_RF_2526: return "RT2526"; 2479 case RT2560_RF_5222: return "RT5222"; 2480 default: return "unknown"; 2481 } 2482 } 2483 2484 static void 2485 rt2560_read_config(struct rt2560_softc *sc) 2486 { 2487 uint16_t val; 2488 int i; 2489 2490 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2491 sc->rf_rev = (val >> 11) & 0x7; 2492 sc->hw_radio = (val >> 10) & 0x1; 2493 sc->led_mode = (val >> 6) & 0x7; 2494 sc->rx_ant = (val >> 4) & 0x3; 2495 sc->tx_ant = (val >> 2) & 0x3; 2496 sc->nb_ant = val & 0x3; 2497 2498 /* read default values for BBP registers */ 2499 for (i = 0; i < 16; i++) { 2500 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2501 if (val == 0 || val == 0xffff) 2502 continue; 2503 2504 sc->bbp_prom[i].reg = val >> 8; 2505 sc->bbp_prom[i].val = val & 0xff; 2506 } 2507 2508 /* read Tx power for all b/g channels */ 2509 for (i = 0; i < 14 / 2; i++) { 2510 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2511 sc->txpow[i * 2] = val & 0xff; 2512 sc->txpow[i * 2 + 1] = val >> 8; 2513 } 2514 for (i = 0; i < 14; ++i) { 2515 if (sc->txpow[i] > 31) 2516 sc->txpow[i] = 24; 2517 } 2518 2519 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2520 if ((val & 0xff) == 0xff) 2521 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2522 else 2523 sc->rssi_corr = val & 0xff; 2524 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2525 sc->rssi_corr, val); 2526 } 2527 2528 2529 static void 2530 rt2560_scan_start(struct ieee80211com *ic) 2531 { 2532 struct ifnet *ifp = ic->ic_ifp; 2533 struct rt2560_softc *sc = ifp->if_softc; 2534 2535 /* abort TSF synchronization */ 2536 RAL_WRITE(sc, RT2560_CSR14, 0); 2537 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2538 } 2539 2540 static void 2541 rt2560_scan_end(struct ieee80211com *ic) 2542 { 2543 struct ifnet *ifp = ic->ic_ifp; 2544 struct rt2560_softc *sc = ifp->if_softc; 2545 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2546 2547 rt2560_enable_tsf_sync(sc); 2548 /* XXX keep local copy */ 2549 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2550 } 2551 2552 static int 2553 rt2560_bbp_init(struct rt2560_softc *sc) 2554 { 2555 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2556 int i, ntries; 2557 2558 /* wait for BBP to be ready */ 2559 for (ntries = 0; ntries < 100; ntries++) { 2560 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2561 break; 2562 DELAY(1); 2563 } 2564 if (ntries == 100) { 2565 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2566 return EIO; 2567 } 2568 2569 /* initialize BBP registers to default values */ 2570 for (i = 0; i < N(rt2560_def_bbp); i++) { 2571 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2572 rt2560_def_bbp[i].val); 2573 } 2574 2575 /* initialize BBP registers to values stored in EEPROM */ 2576 for (i = 0; i < 16; i++) { 2577 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2578 break; 2579 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2580 } 2581 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2582 2583 return 0; 2584 #undef N 2585 } 2586 2587 static void 2588 rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2589 { 2590 uint32_t tmp; 2591 uint8_t tx; 2592 2593 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2594 if (antenna == 1) 2595 tx |= RT2560_BBP_ANTA; 2596 else if (antenna == 2) 2597 tx |= RT2560_BBP_ANTB; 2598 else 2599 tx |= RT2560_BBP_DIVERSITY; 2600 2601 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2602 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2603 sc->rf_rev == RT2560_RF_5222) 2604 tx |= RT2560_BBP_FLIPIQ; 2605 2606 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2607 2608 /* update values for CCK and OFDM in BBPCSR1 */ 2609 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2610 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2611 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2612 } 2613 2614 static void 2615 rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2616 { 2617 uint8_t rx; 2618 2619 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2620 if (antenna == 1) 2621 rx |= RT2560_BBP_ANTA; 2622 else if (antenna == 2) 2623 rx |= RT2560_BBP_ANTB; 2624 else 2625 rx |= RT2560_BBP_DIVERSITY; 2626 2627 /* need to force no I/Q flip for RF 2525e and 2526 */ 2628 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2629 rx &= ~RT2560_BBP_FLIPIQ; 2630 2631 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2632 } 2633 2634 static void 2635 rt2560_init_locked(struct rt2560_softc *sc) 2636 { 2637 #define N(a) (sizeof (a) / sizeof ((a)[0])) 2638 struct ifnet *ifp = sc->sc_ifp; 2639 struct ieee80211com *ic = ifp->if_l2com; 2640 uint32_t tmp; 2641 int i; 2642 2643 RAL_LOCK_ASSERT(sc); 2644 2645 rt2560_stop_locked(sc); 2646 2647 /* setup tx rings */ 2648 tmp = RT2560_PRIO_RING_COUNT << 24 | 2649 RT2560_ATIM_RING_COUNT << 16 | 2650 RT2560_TX_RING_COUNT << 8 | 2651 RT2560_TX_DESC_SIZE; 2652 2653 /* rings must be initialized in this exact order */ 2654 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2655 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2656 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2657 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2658 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2659 2660 /* setup rx ring */ 2661 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2662 2663 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2664 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2665 2666 /* initialize MAC registers to default values */ 2667 for (i = 0; i < N(rt2560_def_mac); i++) 2668 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2669 2670 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2671 2672 /* set basic rate set (will be updated later) */ 2673 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2674 2675 rt2560_update_slot(ifp); 2676 rt2560_update_plcp(sc); 2677 rt2560_update_led(sc, 0, 0); 2678 2679 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2680 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2681 2682 if (rt2560_bbp_init(sc) != 0) { 2683 rt2560_stop(sc); 2684 RAL_UNLOCK(sc); 2685 return; 2686 } 2687 2688 rt2560_set_txantenna(sc, sc->tx_ant); 2689 rt2560_set_rxantenna(sc, sc->rx_ant); 2690 2691 /* set default BSS channel */ 2692 rt2560_set_chan(sc, ic->ic_curchan); 2693 2694 /* kick Rx */ 2695 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2696 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2697 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2698 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2699 ic->ic_opmode != IEEE80211_M_MBSS) 2700 tmp |= RT2560_DROP_TODS; 2701 if (!(ifp->if_flags & IFF_PROMISC)) 2702 tmp |= RT2560_DROP_NOT_TO_ME; 2703 } 2704 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2705 2706 /* clear old FCS and Rx FIFO errors */ 2707 RAL_READ(sc, RT2560_CNT0); 2708 RAL_READ(sc, RT2560_CNT4); 2709 2710 /* clear any pending interrupts */ 2711 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2712 2713 /* enable interrupts */ 2714 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2715 2716 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2717 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2718 2719 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2720 #undef N 2721 } 2722 2723 static void 2724 rt2560_init(void *priv) 2725 { 2726 struct rt2560_softc *sc = priv; 2727 struct ifnet *ifp = sc->sc_ifp; 2728 struct ieee80211com *ic = ifp->if_l2com; 2729 2730 RAL_LOCK(sc); 2731 rt2560_init_locked(sc); 2732 RAL_UNLOCK(sc); 2733 2734 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2735 ieee80211_start_all(ic); /* start all vap's */ 2736 } 2737 2738 static void 2739 rt2560_stop_locked(struct rt2560_softc *sc) 2740 { 2741 struct ifnet *ifp = sc->sc_ifp; 2742 volatile int *flags = &sc->sc_flags; 2743 2744 RAL_LOCK_ASSERT(sc); 2745 2746 while (*flags & RT2560_F_INPUT_RUNNING) 2747 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2748 2749 callout_stop(&sc->watchdog_ch); 2750 sc->sc_tx_timer = 0; 2751 2752 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2753 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2754 2755 /* abort Tx */ 2756 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2757 2758 /* disable Rx */ 2759 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2760 2761 /* reset ASIC (imply reset BBP) */ 2762 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2763 RAL_WRITE(sc, RT2560_CSR1, 0); 2764 2765 /* disable interrupts */ 2766 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2767 2768 /* reset Tx and Rx rings */ 2769 rt2560_reset_tx_ring(sc, &sc->txq); 2770 rt2560_reset_tx_ring(sc, &sc->atimq); 2771 rt2560_reset_tx_ring(sc, &sc->prioq); 2772 rt2560_reset_tx_ring(sc, &sc->bcnq); 2773 rt2560_reset_rx_ring(sc, &sc->rxq); 2774 } 2775 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2776 } 2777 2778 void 2779 rt2560_stop(void *arg) 2780 { 2781 struct rt2560_softc *sc = arg; 2782 2783 RAL_LOCK(sc); 2784 rt2560_stop_locked(sc); 2785 RAL_UNLOCK(sc); 2786 } 2787 2788 static int 2789 rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2790 const struct ieee80211_bpf_params *params) 2791 { 2792 struct ieee80211com *ic = ni->ni_ic; 2793 struct ifnet *ifp = ic->ic_ifp; 2794 struct rt2560_softc *sc = ifp->if_softc; 2795 2796 RAL_LOCK(sc); 2797 2798 /* prevent management frames from being sent if we're not ready */ 2799 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2800 RAL_UNLOCK(sc); 2801 m_freem(m); 2802 ieee80211_free_node(ni); 2803 return ENETDOWN; 2804 } 2805 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2806 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2807 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2808 RAL_UNLOCK(sc); 2809 m_freem(m); 2810 ieee80211_free_node(ni); 2811 return ENOBUFS; /* XXX */ 2812 } 2813 2814 ifp->if_opackets++; 2815 2816 if (params == NULL) { 2817 /* 2818 * Legacy path; interpret frame contents to decide 2819 * precisely how to send the frame. 2820 */ 2821 if (rt2560_tx_mgt(sc, m, ni) != 0) 2822 goto bad; 2823 } else { 2824 /* 2825 * Caller supplied explicit parameters to use in 2826 * sending the frame. 2827 */ 2828 if (rt2560_tx_raw(sc, m, ni, params)) 2829 goto bad; 2830 } 2831 sc->sc_tx_timer = 5; 2832 2833 RAL_UNLOCK(sc); 2834 2835 return 0; 2836 bad: 2837 ifp->if_oerrors++; 2838 ieee80211_free_node(ni); 2839 RAL_UNLOCK(sc); 2840 return EIO; /* XXX */ 2841 }
Cache object: f6e29e2dfd662d44b4032c75b15f00b0
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