rt2560.c revision 190526
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 190526 2009-03-29 17:59:14Z sam $ */ 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: head/sys/dev/ral/rt2560.c 190526 2009-03-29 17:59:14Z sam $"); 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_phy.h> 56#include <net80211/ieee80211_radiotap.h> 57#include <net80211/ieee80211_regdomain.h> 58#include <net80211/ieee80211_amrr.h> 59 60#include <netinet/in.h> 61#include <netinet/in_systm.h> 62#include <netinet/in_var.h> 63#include <netinet/ip.h> 64#include <netinet/if_ether.h> 65 66#include <dev/ral/rt2560reg.h> 67#include <dev/ral/rt2560var.h> 68 69#define RT2560_RSSI(sc, rssi) \ 70 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 71 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 72 73#define RAL_DEBUG 74#ifdef RAL_DEBUG 75#define DPRINTF(sc, fmt, ...) do { \ 76 if (sc->sc_debug > 0) \ 77 printf(fmt, __VA_ARGS__); \ 78} while (0) 79#define DPRINTFN(sc, n, fmt, ...) do { \ 80 if (sc->sc_debug >= (n)) \ 81 printf(fmt, __VA_ARGS__); \ 82} while (0) 83#else 84#define DPRINTF(sc, fmt, ...) 85#define DPRINTFN(sc, n, fmt, ...) 86#endif 87 88static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 89 const char name[IFNAMSIZ], int unit, int opmode, 90 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 91 const uint8_t mac[IEEE80211_ADDR_LEN]); 92static void rt2560_vap_delete(struct ieee80211vap *); 93static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 94 int); 95static int rt2560_alloc_tx_ring(struct rt2560_softc *, 96 struct rt2560_tx_ring *, int); 97static void rt2560_reset_tx_ring(struct rt2560_softc *, 98 struct rt2560_tx_ring *); 99static void rt2560_free_tx_ring(struct rt2560_softc *, 100 struct rt2560_tx_ring *); 101static int rt2560_alloc_rx_ring(struct rt2560_softc *, 102 struct rt2560_rx_ring *, int); 103static void rt2560_reset_rx_ring(struct rt2560_softc *, 104 struct rt2560_rx_ring *); 105static void rt2560_free_rx_ring(struct rt2560_softc *, 106 struct rt2560_rx_ring *); 107static struct ieee80211_node *rt2560_node_alloc(struct ieee80211vap *, 108 const uint8_t [IEEE80211_ADDR_LEN]); 109static void rt2560_newassoc(struct ieee80211_node *, int); 110static int rt2560_newstate(struct ieee80211vap *, 111 enum ieee80211_state, int); 112static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 113static void rt2560_encryption_intr(struct rt2560_softc *); 114static void rt2560_tx_intr(struct rt2560_softc *); 115static void rt2560_prio_intr(struct rt2560_softc *); 116static void rt2560_decryption_intr(struct rt2560_softc *); 117static void rt2560_rx_intr(struct rt2560_softc *); 118static void rt2560_beacon_update(struct ieee80211vap *, int item); 119static void rt2560_beacon_expire(struct rt2560_softc *); 120static void rt2560_wakeup_expire(struct rt2560_softc *); 121static void rt2560_scan_start(struct ieee80211com *); 122static void rt2560_scan_end(struct ieee80211com *); 123static void rt2560_set_channel(struct ieee80211com *); 124static void rt2560_setup_tx_desc(struct rt2560_softc *, 125 struct rt2560_tx_desc *, uint32_t, int, int, int, 126 bus_addr_t); 127static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 128 struct ieee80211_node *); 129static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 130 struct ieee80211_node *); 131static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 132 struct ieee80211_node *); 133static void rt2560_start_locked(struct ifnet *); 134static void rt2560_start(struct ifnet *); 135static void rt2560_watchdog(void *); 136static int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 137static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 138 uint8_t); 139static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 140static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 141 uint32_t); 142static void rt2560_set_chan(struct rt2560_softc *, 143 struct ieee80211_channel *); 144#if 0 145static void rt2560_disable_rf_tune(struct rt2560_softc *); 146#endif 147static void rt2560_enable_tsf_sync(struct rt2560_softc *); 148static void rt2560_update_plcp(struct rt2560_softc *); 149static void rt2560_update_slot(struct ifnet *); 150static void rt2560_set_basicrates(struct rt2560_softc *); 151static void rt2560_update_led(struct rt2560_softc *, int, int); 152static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 153static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 154static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 155static void rt2560_update_promisc(struct ifnet *); 156static const char *rt2560_get_rf(int); 157static void rt2560_read_config(struct rt2560_softc *); 158static int rt2560_bbp_init(struct rt2560_softc *); 159static void rt2560_set_txantenna(struct rt2560_softc *, int); 160static void rt2560_set_rxantenna(struct rt2560_softc *, int); 161static void rt2560_init_locked(struct rt2560_softc *); 162static void rt2560_init(void *); 163static void rt2560_stop_locked(struct rt2560_softc *); 164static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 165 const struct ieee80211_bpf_params *); 166 167static const struct { 168 uint32_t reg; 169 uint32_t val; 170} rt2560_def_mac[] = { 171 RT2560_DEF_MAC 172}; 173 174static const struct { 175 uint8_t reg; 176 uint8_t val; 177} rt2560_def_bbp[] = { 178 RT2560_DEF_BBP 179}; 180 181static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 182static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 183static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 184static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 185static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 186static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 187static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 188static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 189 190static const struct { 191 uint8_t chan; 192 uint32_t r1, r2, r4; 193} rt2560_rf5222[] = { 194 RT2560_RF5222 195}; 196 197int 198rt2560_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_SHPREAMBLE /* short preamble supported */ 289 | IEEE80211_C_SHSLOT /* short slot time supported */ 290 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 291 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 292#ifdef notyet 293 | IEEE80211_C_TXFRAG /* handle tx frags */ 294#endif 295 ; 296 297 bands = 0; 298 setbit(&bands, IEEE80211_MODE_11B); 299 setbit(&bands, IEEE80211_MODE_11G); 300 if (sc->rf_rev == RT2560_RF_5222) 301 setbit(&bands, IEEE80211_MODE_11A); 302 ieee80211_init_channels(ic, NULL, &bands); 303 304 ieee80211_ifattach(ic, macaddr); 305 ic->ic_newassoc = rt2560_newassoc; 306 ic->ic_raw_xmit = rt2560_raw_xmit; 307 ic->ic_updateslot = rt2560_update_slot; 308 ic->ic_update_promisc = rt2560_update_promisc; 309 ic->ic_node_alloc = rt2560_node_alloc; 310 ic->ic_scan_start = rt2560_scan_start; 311 ic->ic_scan_end = rt2560_scan_end; 312 ic->ic_set_channel = rt2560_set_channel; 313 314 ic->ic_vap_create = rt2560_vap_create; 315 ic->ic_vap_delete = rt2560_vap_delete; 316 317 bpfattach(ifp, DLT_IEEE802_11_RADIO, 318 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 319 320 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 321 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 322 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT); 323 324 sc->sc_txtap_len = sizeof sc->sc_txtap; 325 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 326 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT); 327 328 /* 329 * Add a few sysctl knobs. 330 */ 331#ifdef RAL_DEBUG 332 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 333 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 334 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 335#endif 336 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 337 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 338 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 339 340 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 341 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 342 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 343 344 if (bootverbose) 345 ieee80211_announce(ic); 346 347 return 0; 348 349fail6: rt2560_free_rx_ring(sc, &sc->rxq); 350fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 351fail4: rt2560_free_tx_ring(sc, &sc->prioq); 352fail3: rt2560_free_tx_ring(sc, &sc->atimq); 353fail2: rt2560_free_tx_ring(sc, &sc->txq); 354fail1: mtx_destroy(&sc->sc_mtx); 355 356 return ENXIO; 357} 358 359int 360rt2560_detach(void *xsc) 361{ 362 struct rt2560_softc *sc = xsc; 363 struct ifnet *ifp = sc->sc_ifp; 364 struct ieee80211com *ic = ifp->if_l2com; 365 366 rt2560_stop(sc); 367 368 bpfdetach(ifp); 369 ieee80211_ifdetach(ic); 370 371 rt2560_free_tx_ring(sc, &sc->txq); 372 rt2560_free_tx_ring(sc, &sc->atimq); 373 rt2560_free_tx_ring(sc, &sc->prioq); 374 rt2560_free_tx_ring(sc, &sc->bcnq); 375 rt2560_free_rx_ring(sc, &sc->rxq); 376 377 if_free(ifp); 378 379 mtx_destroy(&sc->sc_mtx); 380 381 return 0; 382} 383 384static struct ieee80211vap * 385rt2560_vap_create(struct ieee80211com *ic, 386 const char name[IFNAMSIZ], int unit, int opmode, int flags, 387 const uint8_t bssid[IEEE80211_ADDR_LEN], 388 const uint8_t mac[IEEE80211_ADDR_LEN]) 389{ 390 struct ifnet *ifp = ic->ic_ifp; 391 struct rt2560_vap *rvp; 392 struct ieee80211vap *vap; 393 394 switch (opmode) { 395 case IEEE80211_M_STA: 396 case IEEE80211_M_IBSS: 397 case IEEE80211_M_AHDEMO: 398 case IEEE80211_M_MONITOR: 399 case IEEE80211_M_HOSTAP: 400 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 401 if_printf(ifp, "only 1 vap supported\n"); 402 return NULL; 403 } 404 if (opmode == IEEE80211_M_STA) 405 flags |= IEEE80211_CLONE_NOBEACONS; 406 break; 407 case IEEE80211_M_WDS: 408 if (TAILQ_EMPTY(&ic->ic_vaps) || 409 ic->ic_opmode != IEEE80211_M_HOSTAP) { 410 if_printf(ifp, "wds only supported in ap mode\n"); 411 return NULL; 412 } 413 /* 414 * Silently remove any request for a unique 415 * bssid; WDS vap's always share the local 416 * mac address. 417 */ 418 flags &= ~IEEE80211_CLONE_BSSID; 419 break; 420 default: 421 if_printf(ifp, "unknown opmode %d\n", opmode); 422 return NULL; 423 } 424 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 425 M_80211_VAP, M_NOWAIT | M_ZERO); 426 if (rvp == NULL) 427 return NULL; 428 vap = &rvp->ral_vap; 429 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 430 431 /* override state transition machine */ 432 rvp->ral_newstate = vap->iv_newstate; 433 vap->iv_newstate = rt2560_newstate; 434 vap->iv_update_beacon = rt2560_beacon_update; 435 436 ieee80211_amrr_init(&rvp->amrr, vap, 437 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 438 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 439 500 /* ms */); 440 441 /* complete setup */ 442 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 443 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 444 ic->ic_opmode = opmode; 445 return vap; 446} 447 448static void 449rt2560_vap_delete(struct ieee80211vap *vap) 450{ 451 struct rt2560_vap *rvp = RT2560_VAP(vap); 452 453 ieee80211_amrr_cleanup(&rvp->amrr); 454 ieee80211_vap_detach(vap); 455 free(rvp, M_80211_VAP); 456} 457 458void 459rt2560_resume(void *xsc) 460{ 461 struct rt2560_softc *sc = xsc; 462 struct ifnet *ifp = sc->sc_ifp; 463 464 if (ifp->if_flags & IFF_UP) 465 rt2560_init(sc); 466} 467 468static void 469rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 470{ 471 if (error != 0) 472 return; 473 474 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 475 476 *(bus_addr_t *)arg = segs[0].ds_addr; 477} 478 479static int 480rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 481 int count) 482{ 483 int i, error; 484 485 ring->count = count; 486 ring->queued = 0; 487 ring->cur = ring->next = 0; 488 ring->cur_encrypt = ring->next_encrypt = 0; 489 490 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 491 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 492 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 493 0, NULL, NULL, &ring->desc_dmat); 494 if (error != 0) { 495 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 496 goto fail; 497 } 498 499 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 500 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 501 if (error != 0) { 502 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 503 goto fail; 504 } 505 506 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 507 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 508 0); 509 if (error != 0) { 510 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 511 goto fail; 512 } 513 514 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 515 M_NOWAIT | M_ZERO); 516 if (ring->data == NULL) { 517 device_printf(sc->sc_dev, "could not allocate soft data\n"); 518 error = ENOMEM; 519 goto fail; 520 } 521 522 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 523 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 524 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 525 &ring->data_dmat); 526 if (error != 0) { 527 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 528 goto fail; 529 } 530 531 for (i = 0; i < count; i++) { 532 error = bus_dmamap_create(ring->data_dmat, 0, 533 &ring->data[i].map); 534 if (error != 0) { 535 device_printf(sc->sc_dev, "could not create DMA map\n"); 536 goto fail; 537 } 538 } 539 540 return 0; 541 542fail: rt2560_free_tx_ring(sc, ring); 543 return error; 544} 545 546static void 547rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 548{ 549 struct rt2560_tx_desc *desc; 550 struct rt2560_tx_data *data; 551 int i; 552 553 for (i = 0; i < ring->count; i++) { 554 desc = &ring->desc[i]; 555 data = &ring->data[i]; 556 557 if (data->m != NULL) { 558 bus_dmamap_sync(ring->data_dmat, data->map, 559 BUS_DMASYNC_POSTWRITE); 560 bus_dmamap_unload(ring->data_dmat, data->map); 561 m_freem(data->m); 562 data->m = NULL; 563 } 564 565 if (data->ni != NULL) { 566 ieee80211_free_node(data->ni); 567 data->ni = NULL; 568 } 569 570 desc->flags = 0; 571 } 572 573 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 574 575 ring->queued = 0; 576 ring->cur = ring->next = 0; 577 ring->cur_encrypt = ring->next_encrypt = 0; 578} 579 580static void 581rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 582{ 583 struct rt2560_tx_data *data; 584 int i; 585 586 if (ring->desc != NULL) { 587 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 588 BUS_DMASYNC_POSTWRITE); 589 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 590 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 591 } 592 593 if (ring->desc_dmat != NULL) 594 bus_dma_tag_destroy(ring->desc_dmat); 595 596 if (ring->data != NULL) { 597 for (i = 0; i < ring->count; i++) { 598 data = &ring->data[i]; 599 600 if (data->m != NULL) { 601 bus_dmamap_sync(ring->data_dmat, data->map, 602 BUS_DMASYNC_POSTWRITE); 603 bus_dmamap_unload(ring->data_dmat, data->map); 604 m_freem(data->m); 605 } 606 607 if (data->ni != NULL) 608 ieee80211_free_node(data->ni); 609 610 if (data->map != NULL) 611 bus_dmamap_destroy(ring->data_dmat, data->map); 612 } 613 614 free(ring->data, M_DEVBUF); 615 } 616 617 if (ring->data_dmat != NULL) 618 bus_dma_tag_destroy(ring->data_dmat); 619} 620 621static int 622rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 623 int count) 624{ 625 struct rt2560_rx_desc *desc; 626 struct rt2560_rx_data *data; 627 bus_addr_t physaddr; 628 int i, error; 629 630 ring->count = count; 631 ring->cur = ring->next = 0; 632 ring->cur_decrypt = 0; 633 634 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 635 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 636 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 637 0, NULL, NULL, &ring->desc_dmat); 638 if (error != 0) { 639 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 640 goto fail; 641 } 642 643 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 644 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 645 if (error != 0) { 646 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 647 goto fail; 648 } 649 650 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 651 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 652 0); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 655 goto fail; 656 } 657 658 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 659 M_NOWAIT | M_ZERO); 660 if (ring->data == NULL) { 661 device_printf(sc->sc_dev, "could not allocate soft data\n"); 662 error = ENOMEM; 663 goto fail; 664 } 665 666 /* 667 * Pre-allocate Rx buffers and populate Rx ring. 668 */ 669 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 670 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 671 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 672 if (error != 0) { 673 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 674 goto fail; 675 } 676 677 for (i = 0; i < count; i++) { 678 desc = &sc->rxq.desc[i]; 679 data = &sc->rxq.data[i]; 680 681 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 682 if (error != 0) { 683 device_printf(sc->sc_dev, "could not create DMA map\n"); 684 goto fail; 685 } 686 687 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 688 if (data->m == NULL) { 689 device_printf(sc->sc_dev, 690 "could not allocate rx mbuf\n"); 691 error = ENOMEM; 692 goto fail; 693 } 694 695 error = bus_dmamap_load(ring->data_dmat, data->map, 696 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 697 &physaddr, 0); 698 if (error != 0) { 699 device_printf(sc->sc_dev, 700 "could not load rx buf DMA map"); 701 goto fail; 702 } 703 704 desc->flags = htole32(RT2560_RX_BUSY); 705 desc->physaddr = htole32(physaddr); 706 } 707 708 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 709 710 return 0; 711 712fail: rt2560_free_rx_ring(sc, ring); 713 return error; 714} 715 716static void 717rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 718{ 719 int i; 720 721 for (i = 0; i < ring->count; i++) { 722 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 723 ring->data[i].drop = 0; 724 } 725 726 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 727 728 ring->cur = ring->next = 0; 729 ring->cur_decrypt = 0; 730} 731 732static void 733rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 734{ 735 struct rt2560_rx_data *data; 736 int i; 737 738 if (ring->desc != NULL) { 739 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 740 BUS_DMASYNC_POSTWRITE); 741 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 742 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 743 } 744 745 if (ring->desc_dmat != NULL) 746 bus_dma_tag_destroy(ring->desc_dmat); 747 748 if (ring->data != NULL) { 749 for (i = 0; i < ring->count; i++) { 750 data = &ring->data[i]; 751 752 if (data->m != NULL) { 753 bus_dmamap_sync(ring->data_dmat, data->map, 754 BUS_DMASYNC_POSTREAD); 755 bus_dmamap_unload(ring->data_dmat, data->map); 756 m_freem(data->m); 757 } 758 759 if (data->map != NULL) 760 bus_dmamap_destroy(ring->data_dmat, data->map); 761 } 762 763 free(ring->data, M_DEVBUF); 764 } 765 766 if (ring->data_dmat != NULL) 767 bus_dma_tag_destroy(ring->data_dmat); 768} 769 770static struct ieee80211_node * 771rt2560_node_alloc(struct ieee80211vap *vap, 772 const uint8_t mac[IEEE80211_ADDR_LEN]) 773{ 774 struct rt2560_node *rn; 775 776 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE, 777 M_NOWAIT | M_ZERO); 778 779 return (rn != NULL) ? &rn->ni : NULL; 780} 781 782static void 783rt2560_newassoc(struct ieee80211_node *ni, int isnew) 784{ 785 struct ieee80211vap *vap = ni->ni_vap; 786 787 ieee80211_amrr_node_init(&RT2560_VAP(vap)->amrr, 788 &RT2560_NODE(ni)->amrr, ni); 789} 790 791static int 792rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 793{ 794 struct rt2560_vap *rvp = RT2560_VAP(vap); 795 struct ifnet *ifp = vap->iv_ic->ic_ifp; 796 struct rt2560_softc *sc = ifp->if_softc; 797 int error; 798 799 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 800 /* abort TSF synchronization */ 801 RAL_WRITE(sc, RT2560_CSR14, 0); 802 803 /* turn association led off */ 804 rt2560_update_led(sc, 0, 0); 805 } 806 807 error = rvp->ral_newstate(vap, nstate, arg); 808 809 if (error == 0 && nstate == IEEE80211_S_RUN) { 810 struct ieee80211_node *ni = vap->iv_bss; 811 struct mbuf *m; 812 813 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 814 rt2560_update_plcp(sc); 815 rt2560_set_basicrates(sc); 816 rt2560_set_bssid(sc, ni->ni_bssid); 817 } 818 819 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 820 vap->iv_opmode == IEEE80211_M_IBSS) { 821 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 822 if (m == NULL) { 823 if_printf(ifp, "could not allocate beacon\n"); 824 return ENOBUFS; 825 } 826 ieee80211_ref_node(ni); 827 error = rt2560_tx_bcn(sc, m, ni); 828 if (error != 0) 829 return error; 830 } 831 832 /* turn assocation led on */ 833 rt2560_update_led(sc, 1, 0); 834 835 if (vap->iv_opmode != IEEE80211_M_MONITOR) 836 rt2560_enable_tsf_sync(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 */ 845static uint16_t 846rt2560_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 */ 903static void 904rt2560_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 952static void 953rt2560_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 1050static void 1051rt2560_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 */ 1138static void 1139rt2560_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 1151 /* retrieve last decriptor index processed by cipher engine */ 1152 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1153 hw /= RT2560_RX_DESC_SIZE; 1154 1155 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1156 BUS_DMASYNC_POSTREAD); 1157 1158 for (; sc->rxq.cur_decrypt != hw;) { 1159 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1160 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1161 1162 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1163 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1164 break; 1165 1166 if (data->drop) { 1167 ifp->if_ierrors++; 1168 goto skip; 1169 } 1170 1171 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1172 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1173 ifp->if_ierrors++; 1174 goto skip; 1175 } 1176 1177 /* 1178 * Try to allocate a new mbuf for this ring element and load it 1179 * before processing the current mbuf. If the ring element 1180 * cannot be loaded, drop the received packet and reuse the old 1181 * mbuf. In the unlikely case that the old mbuf can't be 1182 * reloaded either, explicitly panic. 1183 */ 1184 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1185 if (mnew == NULL) { 1186 ifp->if_ierrors++; 1187 goto skip; 1188 } 1189 1190 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1191 BUS_DMASYNC_POSTREAD); 1192 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1193 1194 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1195 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1196 &physaddr, 0); 1197 if (error != 0) { 1198 m_freem(mnew); 1199 1200 /* try to reload the old mbuf */ 1201 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1202 mtod(data->m, void *), MCLBYTES, 1203 rt2560_dma_map_addr, &physaddr, 0); 1204 if (error != 0) { 1205 /* very unlikely that it will fail... */ 1206 panic("%s: could not load old rx mbuf", 1207 device_get_name(sc->sc_dev)); 1208 } 1209 ifp->if_ierrors++; 1210 goto skip; 1211 } 1212 1213 /* 1214 * New mbuf successfully loaded, update Rx ring and continue 1215 * processing. 1216 */ 1217 m = data->m; 1218 data->m = mnew; 1219 desc->physaddr = htole32(physaddr); 1220 1221 /* finalize mbuf */ 1222 m->m_pkthdr.rcvif = ifp; 1223 m->m_pkthdr.len = m->m_len = 1224 (le32toh(desc->flags) >> 16) & 0xfff; 1225 1226 if (bpf_peers_present(ifp->if_bpf)) { 1227 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1228 uint32_t tsf_lo, tsf_hi; 1229 1230 /* get timestamp (low and high 32 bits) */ 1231 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1232 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1233 1234 tap->wr_tsf = 1235 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1236 tap->wr_flags = 0; 1237 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1238 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1239 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1240 tap->wr_antenna = sc->rx_ant; 1241 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi); 1242 1243 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1244 } 1245 1246 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1247 RAL_UNLOCK(sc); 1248 wh = mtod(m, struct ieee80211_frame *); 1249 ni = ieee80211_find_rxnode(ic, 1250 (struct ieee80211_frame_min *)wh); 1251 if (ni != NULL) { 1252 (void) ieee80211_input(ni, m, 1253 RT2560_RSSI(sc, desc->rssi), RT2560_NOISE_FLOOR, 0); 1254 ieee80211_free_node(ni); 1255 } else 1256 (void) ieee80211_input_all(ic, m, 1257 RT2560_RSSI(sc, desc->rssi), RT2560_NOISE_FLOOR, 0); 1258 1259 RAL_LOCK(sc); 1260 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1261skip: 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 */ 1277static void 1278rt2560_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 1327static void 1328rt2560_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 */ 1340static void 1341rt2560_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 return; 1352 1353 data = &sc->bcnq.data[sc->bcnq.next]; 1354 /* 1355 * Don't send beacon if bsschan isn't set 1356 */ 1357 if (data->ni == NULL) 1358 return; 1359 1360 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1361 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1362 1363 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1364 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1365 1366 rt2560_tx_bcn(sc, data->m, data->ni); 1367 1368 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1369 1370 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1371} 1372 1373/* ARGSUSED */ 1374static void 1375rt2560_wakeup_expire(struct rt2560_softc *sc) 1376{ 1377 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1378} 1379 1380void 1381rt2560_intr(void *arg) 1382{ 1383 struct rt2560_softc *sc = arg; 1384 struct ifnet *ifp = sc->sc_ifp; 1385 uint32_t r; 1386 1387 RAL_LOCK(sc); 1388 1389 /* disable interrupts */ 1390 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1391 1392 /* don't re-enable interrupts if we're shutting down */ 1393 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1394 RAL_UNLOCK(sc); 1395 return; 1396 } 1397 1398 r = RAL_READ(sc, RT2560_CSR7); 1399 RAL_WRITE(sc, RT2560_CSR7, r); 1400 1401 if (r & RT2560_BEACON_EXPIRE) 1402 rt2560_beacon_expire(sc); 1403 1404 if (r & RT2560_WAKEUP_EXPIRE) 1405 rt2560_wakeup_expire(sc); 1406 1407 if (r & RT2560_ENCRYPTION_DONE) 1408 rt2560_encryption_intr(sc); 1409 1410 if (r & RT2560_TX_DONE) 1411 rt2560_tx_intr(sc); 1412 1413 if (r & RT2560_PRIO_DONE) 1414 rt2560_prio_intr(sc); 1415 1416 if (r & RT2560_DECRYPTION_DONE) 1417 rt2560_decryption_intr(sc); 1418 1419 if (r & RT2560_RX_DONE) { 1420 rt2560_rx_intr(sc); 1421 rt2560_encryption_intr(sc); 1422 } 1423 1424 /* re-enable interrupts */ 1425 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1426 1427 RAL_UNLOCK(sc); 1428} 1429 1430#define RAL_SIFS 10 /* us */ 1431 1432#define RT2560_TXRX_TURNAROUND 10 /* us */ 1433 1434static uint8_t 1435rt2560_plcp_signal(int rate) 1436{ 1437 switch (rate) { 1438 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1439 case 12: return 0xb; 1440 case 18: return 0xf; 1441 case 24: return 0xa; 1442 case 36: return 0xe; 1443 case 48: return 0x9; 1444 case 72: return 0xd; 1445 case 96: return 0x8; 1446 case 108: return 0xc; 1447 1448 /* CCK rates (NB: not IEEE std, device-specific) */ 1449 case 2: return 0x0; 1450 case 4: return 0x1; 1451 case 11: return 0x2; 1452 case 22: return 0x3; 1453 } 1454 return 0xff; /* XXX unsupported/unknown rate */ 1455} 1456 1457static void 1458rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1459 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1460{ 1461 struct ifnet *ifp = sc->sc_ifp; 1462 struct ieee80211com *ic = ifp->if_l2com; 1463 uint16_t plcp_length; 1464 int remainder; 1465 1466 desc->flags = htole32(flags); 1467 desc->flags |= htole32(len << 16); 1468 1469 desc->physaddr = htole32(physaddr); 1470 desc->wme = htole16( 1471 RT2560_AIFSN(2) | 1472 RT2560_LOGCWMIN(3) | 1473 RT2560_LOGCWMAX(8)); 1474 1475 /* setup PLCP fields */ 1476 desc->plcp_signal = rt2560_plcp_signal(rate); 1477 desc->plcp_service = 4; 1478 1479 len += IEEE80211_CRC_LEN; 1480 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) { 1481 desc->flags |= htole32(RT2560_TX_OFDM); 1482 1483 plcp_length = len & 0xfff; 1484 desc->plcp_length_hi = plcp_length >> 6; 1485 desc->plcp_length_lo = plcp_length & 0x3f; 1486 } else { 1487 plcp_length = (16 * len + rate - 1) / rate; 1488 if (rate == 22) { 1489 remainder = (16 * len) % 22; 1490 if (remainder != 0 && remainder < 7) 1491 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1492 } 1493 desc->plcp_length_hi = plcp_length >> 8; 1494 desc->plcp_length_lo = plcp_length & 0xff; 1495 1496 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1497 desc->plcp_signal |= 0x08; 1498 } 1499 1500 if (!encrypt) 1501 desc->flags |= htole32(RT2560_TX_VALID); 1502 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1503 : htole32(RT2560_TX_BUSY); 1504} 1505 1506static int 1507rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1508 struct ieee80211_node *ni) 1509{ 1510 struct ieee80211vap *vap = ni->ni_vap; 1511 struct ieee80211com *ic = ni->ni_ic; 1512 struct ifnet *ifp = sc->sc_ifp; 1513 struct rt2560_tx_desc *desc; 1514 struct rt2560_tx_data *data; 1515 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1516 int nsegs, rate, error; 1517 1518 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1519 data = &sc->bcnq.data[sc->bcnq.cur]; 1520 1521 /* XXX maybe a separate beacon rate? */ 1522 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1523 1524 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1525 segs, &nsegs, BUS_DMA_NOWAIT); 1526 if (error != 0) { 1527 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1528 error); 1529 m_freem(m0); 1530 return error; 1531 } 1532 1533 if (bpf_peers_present(ifp->if_bpf)) { 1534 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1535 1536 tap->wt_flags = 0; 1537 tap->wt_rate = rate; 1538 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1539 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1540 tap->wt_antenna = sc->tx_ant; 1541 1542 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1543 } 1544 1545 data->m = m0; 1546 data->ni = ni; 1547 1548 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1549 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1550 1551 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1552 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1553 1554 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1555 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1556 BUS_DMASYNC_PREWRITE); 1557 1558 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1559 1560 return 0; 1561} 1562 1563static int 1564rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1565 struct ieee80211_node *ni) 1566{ 1567 struct ieee80211vap *vap = ni->ni_vap; 1568 struct ieee80211com *ic = ni->ni_ic; 1569 struct ifnet *ifp = sc->sc_ifp; 1570 struct rt2560_tx_desc *desc; 1571 struct rt2560_tx_data *data; 1572 struct ieee80211_frame *wh; 1573 struct ieee80211_key *k; 1574 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1575 uint16_t dur; 1576 uint32_t flags = 0; 1577 int nsegs, rate, error; 1578 1579 desc = &sc->prioq.desc[sc->prioq.cur]; 1580 data = &sc->prioq.data[sc->prioq.cur]; 1581 1582 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1583 1584 wh = mtod(m0, struct ieee80211_frame *); 1585 1586 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1587 k = ieee80211_crypto_encap(ni, m0); 1588 if (k == NULL) { 1589 m_freem(m0); 1590 return ENOBUFS; 1591 } 1592 } 1593 1594 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1595 segs, &nsegs, 0); 1596 if (error != 0) { 1597 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1598 error); 1599 m_freem(m0); 1600 return error; 1601 } 1602 1603 if (bpf_peers_present(ifp->if_bpf)) { 1604 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1605 1606 tap->wt_flags = 0; 1607 tap->wt_rate = rate; 1608 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1609 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1610 tap->wt_antenna = sc->tx_ant; 1611 1612 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1613 } 1614 1615 data->m = m0; 1616 data->ni = ni; 1617 /* management frames are not taken into account for amrr */ 1618 data->rix = IEEE80211_FIXED_RATE_NONE; 1619 1620 wh = mtod(m0, struct ieee80211_frame *); 1621 1622 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1623 flags |= RT2560_TX_ACK; 1624 1625 dur = ieee80211_ack_duration(sc->sc_rates, 1626 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1627 *(uint16_t *)wh->i_dur = htole16(dur); 1628 1629 /* tell hardware to add timestamp for probe responses */ 1630 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1631 IEEE80211_FC0_TYPE_MGT && 1632 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1633 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1634 flags |= RT2560_TX_TIMESTAMP; 1635 } 1636 1637 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1638 segs->ds_addr); 1639 1640 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1641 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1642 BUS_DMASYNC_PREWRITE); 1643 1644 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1645 m0->m_pkthdr.len, sc->prioq.cur, rate); 1646 1647 /* kick prio */ 1648 sc->prioq.queued++; 1649 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1650 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1651 1652 return 0; 1653} 1654 1655static int 1656rt2560_sendprot(struct rt2560_softc *sc, 1657 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1658{ 1659 struct ieee80211com *ic = ni->ni_ic; 1660 const struct ieee80211_frame *wh; 1661 struct rt2560_tx_desc *desc; 1662 struct rt2560_tx_data *data; 1663 struct mbuf *mprot; 1664 int protrate, ackrate, pktlen, flags, isshort, error; 1665 uint16_t dur; 1666 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1667 int nsegs; 1668 1669 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1670 ("protection %d", prot)); 1671 1672 wh = mtod(m, const struct ieee80211_frame *); 1673 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1674 1675 protrate = ieee80211_ctl_rate(sc->sc_rates, rate); 1676 ackrate = ieee80211_ack_rate(sc->sc_rates, rate); 1677 1678 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1679 dur = ieee80211_compute_duration(sc->sc_rates, pktlen, rate, isshort) 1680 + ieee80211_ack_duration(sc->sc_rates, rate, isshort); 1681 flags = RT2560_TX_MORE_FRAG; 1682 if (prot == IEEE80211_PROT_RTSCTS) { 1683 /* NB: CTS is the same size as an ACK */ 1684 dur += ieee80211_ack_duration(sc->sc_rates, rate, isshort); 1685 flags |= RT2560_TX_ACK; 1686 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1687 } else { 1688 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1689 } 1690 if (mprot == NULL) { 1691 /* XXX stat + msg */ 1692 return ENOBUFS; 1693 } 1694 1695 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1696 data = &sc->txq.data[sc->txq.cur_encrypt]; 1697 1698 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1699 mprot, segs, &nsegs, 0); 1700 if (error != 0) { 1701 device_printf(sc->sc_dev, 1702 "could not map mbuf (error %d)\n", error); 1703 m_freem(mprot); 1704 return error; 1705 } 1706 1707 data->m = mprot; 1708 data->ni = ieee80211_ref_node(ni); 1709 /* ctl frames are not taken into account for amrr */ 1710 data->rix = IEEE80211_FIXED_RATE_NONE; 1711 1712 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1713 segs->ds_addr); 1714 1715 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1716 BUS_DMASYNC_PREWRITE); 1717 1718 sc->txq.queued++; 1719 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1720 1721 return 0; 1722} 1723 1724static int 1725rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1726 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1727{ 1728 struct ifnet *ifp = sc->sc_ifp; 1729 struct ieee80211com *ic = ifp->if_l2com; 1730 struct rt2560_tx_desc *desc; 1731 struct rt2560_tx_data *data; 1732 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1733 uint32_t flags; 1734 int nsegs, rate, error; 1735 1736 desc = &sc->prioq.desc[sc->prioq.cur]; 1737 data = &sc->prioq.data[sc->prioq.cur]; 1738 1739 rate = params->ibp_rate0 & IEEE80211_RATE_VAL; 1740 /* XXX validate */ 1741 if (rate == 0) { 1742 /* XXX fall back to mcast/mgmt rate? */ 1743 m_freem(m0); 1744 return EINVAL; 1745 } 1746 1747 flags = 0; 1748 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1749 flags |= RT2560_TX_ACK; 1750 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1751 error = rt2560_sendprot(sc, m0, ni, 1752 params->ibp_flags & IEEE80211_BPF_RTS ? 1753 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1754 rate); 1755 if (error) { 1756 m_freem(m0); 1757 return error; 1758 } 1759 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1760 } 1761 1762 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1763 segs, &nsegs, 0); 1764 if (error != 0) { 1765 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1766 error); 1767 m_freem(m0); 1768 return error; 1769 } 1770 1771 if (bpf_peers_present(ifp->if_bpf)) { 1772 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1773 1774 tap->wt_flags = 0; 1775 tap->wt_rate = rate; 1776 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1777 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1778 tap->wt_antenna = sc->tx_ant; 1779 1780 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1781 } 1782 1783 data->m = m0; 1784 data->ni = ni; 1785 1786 /* XXX need to setup descriptor ourself */ 1787 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1788 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1789 segs->ds_addr); 1790 1791 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1792 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1793 BUS_DMASYNC_PREWRITE); 1794 1795 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1796 m0->m_pkthdr.len, sc->prioq.cur, rate); 1797 1798 /* kick prio */ 1799 sc->prioq.queued++; 1800 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1801 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1802 1803 return 0; 1804} 1805 1806static int 1807rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1808 struct ieee80211_node *ni) 1809{ 1810 struct ieee80211vap *vap = ni->ni_vap; 1811 struct ieee80211com *ic = ni->ni_ic; 1812 struct ifnet *ifp = sc->sc_ifp; 1813 struct rt2560_tx_desc *desc; 1814 struct rt2560_tx_data *data; 1815 struct ieee80211_frame *wh; 1816 const struct ieee80211_txparam *tp; 1817 struct ieee80211_key *k; 1818 struct mbuf *mnew; 1819 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1820 uint16_t dur; 1821 uint32_t flags; 1822 int nsegs, rate, error; 1823 1824 wh = mtod(m0, struct ieee80211_frame *); 1825 1826 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1827 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1828 rate = tp->mcastrate; 1829 } else if (m0->m_flags & M_EAPOL) { 1830 rate = tp->mgmtrate; 1831 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1832 rate = tp->ucastrate; 1833 } else { 1834 (void) ieee80211_amrr_choose(ni, &RT2560_NODE(ni)->amrr); 1835 rate = ni->ni_txrate; 1836 } 1837 1838 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1839 k = ieee80211_crypto_encap(ni, m0); 1840 if (k == NULL) { 1841 m_freem(m0); 1842 return ENOBUFS; 1843 } 1844 1845 /* packet header may have moved, reset our local pointer */ 1846 wh = mtod(m0, struct ieee80211_frame *); 1847 } 1848 1849 flags = 0; 1850 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1851 int prot = IEEE80211_PROT_NONE; 1852 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1853 prot = IEEE80211_PROT_RTSCTS; 1854 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1855 ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) 1856 prot = ic->ic_protmode; 1857 if (prot != IEEE80211_PROT_NONE) { 1858 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1859 if (error) { 1860 m_freem(m0); 1861 return error; 1862 } 1863 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1864 } 1865 } 1866 1867 data = &sc->txq.data[sc->txq.cur_encrypt]; 1868 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1869 1870 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1871 segs, &nsegs, 0); 1872 if (error != 0 && error != EFBIG) { 1873 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1874 error); 1875 m_freem(m0); 1876 return error; 1877 } 1878 if (error != 0) { 1879 mnew = m_defrag(m0, M_DONTWAIT); 1880 if (mnew == NULL) { 1881 device_printf(sc->sc_dev, 1882 "could not defragment mbuf\n"); 1883 m_freem(m0); 1884 return ENOBUFS; 1885 } 1886 m0 = mnew; 1887 1888 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1889 m0, segs, &nsegs, 0); 1890 if (error != 0) { 1891 device_printf(sc->sc_dev, 1892 "could not map mbuf (error %d)\n", error); 1893 m_freem(m0); 1894 return error; 1895 } 1896 1897 /* packet header may have moved, reset our local pointer */ 1898 wh = mtod(m0, struct ieee80211_frame *); 1899 } 1900 1901 if (bpf_peers_present(ifp->if_bpf)) { 1902 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1903 1904 tap->wt_flags = 0; 1905 tap->wt_rate = rate; 1906 tap->wt_antenna = sc->tx_ant; 1907 1908 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1909 } 1910 1911 data->m = m0; 1912 data->ni = ni; 1913 1914 /* remember link conditions for rate adaptation algorithm */ 1915 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1916 data->rix = ni->ni_txrate; 1917 /* XXX probably need last rssi value and not avg */ 1918 data->rssi = ic->ic_node_getrssi(ni); 1919 } else 1920 data->rix = IEEE80211_FIXED_RATE_NONE; 1921 1922 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1923 flags |= RT2560_TX_ACK; 1924 1925 dur = ieee80211_ack_duration(sc->sc_rates, 1926 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1927 *(uint16_t *)wh->i_dur = htole16(dur); 1928 } 1929 1930 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1931 segs->ds_addr); 1932 1933 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1934 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1935 BUS_DMASYNC_PREWRITE); 1936 1937 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1938 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1939 1940 /* kick encrypt */ 1941 sc->txq.queued++; 1942 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1943 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1944 1945 return 0; 1946} 1947 1948static void 1949rt2560_start_locked(struct ifnet *ifp) 1950{ 1951 struct rt2560_softc *sc = ifp->if_softc; 1952 struct mbuf *m; 1953 struct ieee80211_node *ni; 1954 1955 RAL_LOCK_ASSERT(sc); 1956 1957 for (;;) { 1958 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1959 if (m == NULL) 1960 break; 1961 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1962 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1963 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1964 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1965 break; 1966 } 1967 1968 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1969 m = ieee80211_encap(ni, m); 1970 if (m == NULL) { 1971 ieee80211_free_node(ni); 1972 ifp->if_oerrors++; 1973 continue; 1974 } 1975 1976 if (rt2560_tx_data(sc, m, ni) != 0) { 1977 ieee80211_free_node(ni); 1978 ifp->if_oerrors++; 1979 break; 1980 } 1981 1982 sc->sc_tx_timer = 5; 1983 } 1984} 1985 1986static void 1987rt2560_start(struct ifnet *ifp) 1988{ 1989 struct rt2560_softc *sc = ifp->if_softc; 1990 1991 RAL_LOCK(sc); 1992 rt2560_start_locked(ifp); 1993 RAL_UNLOCK(sc); 1994} 1995 1996static void 1997rt2560_watchdog(void *arg) 1998{ 1999 struct rt2560_softc *sc = arg; 2000 struct ifnet *ifp = sc->sc_ifp; 2001 2002 RAL_LOCK_ASSERT(sc); 2003 2004 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 2005 2006 if (sc->sc_invalid) /* card ejected */ 2007 return; 2008 2009 rt2560_encryption_intr(sc); 2010 rt2560_tx_intr(sc); 2011 2012 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 2013 if_printf(ifp, "device timeout\n"); 2014 rt2560_init_locked(sc); 2015 ifp->if_oerrors++; 2016 /* NB: callout is reset in rt2560_init() */ 2017 return; 2018 } 2019 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2020} 2021 2022static int 2023rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2024{ 2025 struct rt2560_softc *sc = ifp->if_softc; 2026 struct ieee80211com *ic = ifp->if_l2com; 2027 struct ifreq *ifr = (struct ifreq *) data; 2028 int error = 0, startall = 0; 2029 2030 switch (cmd) { 2031 case SIOCSIFFLAGS: 2032 RAL_LOCK(sc); 2033 if (ifp->if_flags & IFF_UP) { 2034 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2035 rt2560_init_locked(sc); 2036 startall = 1; 2037 } else 2038 rt2560_update_promisc(ifp); 2039 } else { 2040 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2041 rt2560_stop_locked(sc); 2042 } 2043 RAL_UNLOCK(sc); 2044 if (startall) 2045 ieee80211_start_all(ic); 2046 break; 2047 case SIOCGIFMEDIA: 2048 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2049 break; 2050 case SIOCGIFADDR: 2051 error = ether_ioctl(ifp, cmd, data); 2052 break; 2053 default: 2054 error = EINVAL; 2055 break; 2056 } 2057 return error; 2058} 2059 2060static void 2061rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2062{ 2063 uint32_t tmp; 2064 int ntries; 2065 2066 for (ntries = 0; ntries < 100; ntries++) { 2067 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2068 break; 2069 DELAY(1); 2070 } 2071 if (ntries == 100) { 2072 device_printf(sc->sc_dev, "could not write to BBP\n"); 2073 return; 2074 } 2075 2076 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2077 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2078 2079 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2080} 2081 2082static uint8_t 2083rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2084{ 2085 uint32_t val; 2086 int ntries; 2087 2088 for (ntries = 0; ntries < 100; ntries++) { 2089 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2090 break; 2091 DELAY(1); 2092 } 2093 if (ntries == 100) { 2094 device_printf(sc->sc_dev, "could not read from BBP\n"); 2095 return 0; 2096 } 2097 2098 val = RT2560_BBP_BUSY | reg << 8; 2099 RAL_WRITE(sc, RT2560_BBPCSR, val); 2100 2101 for (ntries = 0; ntries < 100; ntries++) { 2102 val = RAL_READ(sc, RT2560_BBPCSR); 2103 if (!(val & RT2560_BBP_BUSY)) 2104 return val & 0xff; 2105 DELAY(1); 2106 } 2107 2108 device_printf(sc->sc_dev, "could not read from BBP\n"); 2109 return 0; 2110} 2111 2112static void 2113rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2114{ 2115 uint32_t tmp; 2116 int ntries; 2117 2118 for (ntries = 0; ntries < 100; ntries++) { 2119 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2120 break; 2121 DELAY(1); 2122 } 2123 if (ntries == 100) { 2124 device_printf(sc->sc_dev, "could not write to RF\n"); 2125 return; 2126 } 2127 2128 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2129 (reg & 0x3); 2130 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2131 2132 /* remember last written value in sc */ 2133 sc->rf_regs[reg] = val; 2134 2135 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2136} 2137 2138static void 2139rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2140{ 2141 struct ifnet *ifp = sc->sc_ifp; 2142 struct ieee80211com *ic = ifp->if_l2com; 2143 uint8_t power, tmp; 2144 u_int i, chan; 2145 2146 chan = ieee80211_chan2ieee(ic, c); 2147 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2148 2149 sc->sc_rates = ieee80211_get_ratetable(c); 2150 2151 if (IEEE80211_IS_CHAN_2GHZ(c)) 2152 power = min(sc->txpow[chan - 1], 31); 2153 else 2154 power = 31; 2155 2156 /* adjust txpower using ifconfig settings */ 2157 power -= (100 - ic->ic_txpowlimit) / 8; 2158 2159 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2160 2161 switch (sc->rf_rev) { 2162 case RT2560_RF_2522: 2163 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2164 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2165 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2166 break; 2167 2168 case RT2560_RF_2523: 2169 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2170 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2171 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2172 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2173 break; 2174 2175 case RT2560_RF_2524: 2176 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2177 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2178 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2179 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2180 break; 2181 2182 case RT2560_RF_2525: 2183 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2184 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2185 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2186 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2187 2188 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2189 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2190 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2191 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2192 break; 2193 2194 case RT2560_RF_2525E: 2195 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2196 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2197 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2198 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2199 break; 2200 2201 case RT2560_RF_2526: 2202 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2203 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2204 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2205 2206 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2207 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2208 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2209 break; 2210 2211 /* dual-band RF */ 2212 case RT2560_RF_5222: 2213 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2214 2215 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2216 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2217 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2218 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2219 break; 2220 default: 2221 printf("unknown ral rev=%d\n", sc->rf_rev); 2222 } 2223 2224 /* XXX */ 2225 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2226 /* set Japan filter bit for channel 14 */ 2227 tmp = rt2560_bbp_read(sc, 70); 2228 2229 tmp &= ~RT2560_JAPAN_FILTER; 2230 if (chan == 14) 2231 tmp |= RT2560_JAPAN_FILTER; 2232 2233 rt2560_bbp_write(sc, 70, tmp); 2234 2235 /* clear CRC errors */ 2236 RAL_READ(sc, RT2560_CNT0); 2237 } 2238} 2239 2240static void 2241rt2560_set_channel(struct ieee80211com *ic) 2242{ 2243 struct ifnet *ifp = ic->ic_ifp; 2244 struct rt2560_softc *sc = ifp->if_softc; 2245 2246 RAL_LOCK(sc); 2247 rt2560_set_chan(sc, ic->ic_curchan); 2248 2249 sc->sc_txtap.wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 2250 sc->sc_txtap.wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 2251 sc->sc_rxtap.wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 2252 sc->sc_rxtap.wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 2253 RAL_UNLOCK(sc); 2254 2255} 2256 2257#if 0 2258/* 2259 * Disable RF auto-tuning. 2260 */ 2261static void 2262rt2560_disable_rf_tune(struct rt2560_softc *sc) 2263{ 2264 uint32_t tmp; 2265 2266 if (sc->rf_rev != RT2560_RF_2523) { 2267 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2268 rt2560_rf_write(sc, RAL_RF1, tmp); 2269 } 2270 2271 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2272 rt2560_rf_write(sc, RAL_RF3, tmp); 2273 2274 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2275} 2276#endif 2277 2278/* 2279 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2280 * synchronization. 2281 */ 2282static void 2283rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2284{ 2285 struct ifnet *ifp = sc->sc_ifp; 2286 struct ieee80211com *ic = ifp->if_l2com; 2287 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2288 uint16_t logcwmin, preload; 2289 uint32_t tmp; 2290 2291 /* first, disable TSF synchronization */ 2292 RAL_WRITE(sc, RT2560_CSR14, 0); 2293 2294 tmp = 16 * vap->iv_bss->ni_intval; 2295 RAL_WRITE(sc, RT2560_CSR12, tmp); 2296 2297 RAL_WRITE(sc, RT2560_CSR13, 0); 2298 2299 logcwmin = 5; 2300 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2301 tmp = logcwmin << 16 | preload; 2302 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2303 2304 /* finally, enable TSF synchronization */ 2305 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2306 if (ic->ic_opmode == IEEE80211_M_STA) 2307 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2308 else 2309 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2310 RT2560_ENABLE_BEACON_GENERATOR; 2311 RAL_WRITE(sc, RT2560_CSR14, tmp); 2312 2313 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2314} 2315 2316static void 2317rt2560_update_plcp(struct rt2560_softc *sc) 2318{ 2319 struct ifnet *ifp = sc->sc_ifp; 2320 struct ieee80211com *ic = ifp->if_l2com; 2321 2322 /* no short preamble for 1Mbps */ 2323 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2324 2325 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2326 /* values taken from the reference driver */ 2327 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2328 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2329 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2330 } else { 2331 /* same values as above or'ed 0x8 */ 2332 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2333 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2334 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2335 } 2336 2337 DPRINTF(sc, "updating PLCP for %s preamble\n", 2338 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2339} 2340 2341/* 2342 * This function can be called by ieee80211_set_shortslottime(). Refer to 2343 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2344 */ 2345static void 2346rt2560_update_slot(struct ifnet *ifp) 2347{ 2348 struct rt2560_softc *sc = ifp->if_softc; 2349 struct ieee80211com *ic = ifp->if_l2com; 2350 uint8_t slottime; 2351 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2352 uint32_t tmp; 2353 2354#ifndef FORCE_SLOTTIME 2355 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2356#else 2357 /* 2358 * Setting slot time according to "short slot time" capability 2359 * in beacon/probe_resp seems to cause problem to acknowledge 2360 * certain AP's data frames transimitted at CCK/DS rates: the 2361 * problematic AP keeps retransmitting data frames, probably 2362 * because MAC level acks are not received by hardware. 2363 * So we cheat a little bit here by claiming we are capable of 2364 * "short slot time" but setting hardware slot time to the normal 2365 * slot time. ral(4) does not seem to have trouble to receive 2366 * frames transmitted using short slot time even if hardware 2367 * slot time is set to normal slot time. If we didn't use this 2368 * trick, we would have to claim that short slot time is not 2369 * supported; this would give relative poor RX performance 2370 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2371 * slot time. 2372 */ 2373 slottime = 20; 2374#endif 2375 2376 /* update the MAC slot boundaries */ 2377 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2378 tx_pifs = tx_sifs + slottime; 2379 tx_difs = tx_sifs + 2 * slottime; 2380 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2381 2382 tmp = RAL_READ(sc, RT2560_CSR11); 2383 tmp = (tmp & ~0x1f00) | slottime << 8; 2384 RAL_WRITE(sc, RT2560_CSR11, tmp); 2385 2386 tmp = tx_pifs << 16 | tx_sifs; 2387 RAL_WRITE(sc, RT2560_CSR18, tmp); 2388 2389 tmp = eifs << 16 | tx_difs; 2390 RAL_WRITE(sc, RT2560_CSR19, tmp); 2391 2392 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2393} 2394 2395static void 2396rt2560_set_basicrates(struct rt2560_softc *sc) 2397{ 2398 struct ifnet *ifp = sc->sc_ifp; 2399 struct ieee80211com *ic = ifp->if_l2com; 2400 2401 /* update basic rate set */ 2402 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2403 /* 11b basic rates: 1, 2Mbps */ 2404 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2405 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2406 /* 11a basic rates: 6, 12, 24Mbps */ 2407 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2408 } else { 2409 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2410 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2411 } 2412} 2413 2414static void 2415rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2416{ 2417 uint32_t tmp; 2418 2419 /* set ON period to 70ms and OFF period to 30ms */ 2420 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2421 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2422} 2423 2424static void 2425rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2426{ 2427 uint32_t tmp; 2428 2429 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2430 RAL_WRITE(sc, RT2560_CSR5, tmp); 2431 2432 tmp = bssid[4] | bssid[5] << 8; 2433 RAL_WRITE(sc, RT2560_CSR6, tmp); 2434 2435 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2436} 2437 2438static void 2439rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2440{ 2441 uint32_t tmp; 2442 2443 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2444 RAL_WRITE(sc, RT2560_CSR3, tmp); 2445 2446 tmp = addr[4] | addr[5] << 8; 2447 RAL_WRITE(sc, RT2560_CSR4, tmp); 2448 2449 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2450} 2451 2452static void 2453rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2454{ 2455 uint32_t tmp; 2456 2457 tmp = RAL_READ(sc, RT2560_CSR3); 2458 addr[0] = tmp & 0xff; 2459 addr[1] = (tmp >> 8) & 0xff; 2460 addr[2] = (tmp >> 16) & 0xff; 2461 addr[3] = (tmp >> 24); 2462 2463 tmp = RAL_READ(sc, RT2560_CSR4); 2464 addr[4] = tmp & 0xff; 2465 addr[5] = (tmp >> 8) & 0xff; 2466} 2467 2468static void 2469rt2560_update_promisc(struct ifnet *ifp) 2470{ 2471 struct rt2560_softc *sc = ifp->if_softc; 2472 uint32_t tmp; 2473 2474 tmp = RAL_READ(sc, RT2560_RXCSR0); 2475 2476 tmp &= ~RT2560_DROP_NOT_TO_ME; 2477 if (!(ifp->if_flags & IFF_PROMISC)) 2478 tmp |= RT2560_DROP_NOT_TO_ME; 2479 2480 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2481 2482 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2483 "entering" : "leaving"); 2484} 2485 2486static const char * 2487rt2560_get_rf(int rev) 2488{ 2489 switch (rev) { 2490 case RT2560_RF_2522: return "RT2522"; 2491 case RT2560_RF_2523: return "RT2523"; 2492 case RT2560_RF_2524: return "RT2524"; 2493 case RT2560_RF_2525: return "RT2525"; 2494 case RT2560_RF_2525E: return "RT2525e"; 2495 case RT2560_RF_2526: return "RT2526"; 2496 case RT2560_RF_5222: return "RT5222"; 2497 default: return "unknown"; 2498 } 2499} 2500 2501static void 2502rt2560_read_config(struct rt2560_softc *sc) 2503{ 2504 uint16_t val; 2505 int i; 2506 2507 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2508 sc->rf_rev = (val >> 11) & 0x7; 2509 sc->hw_radio = (val >> 10) & 0x1; 2510 sc->led_mode = (val >> 6) & 0x7; 2511 sc->rx_ant = (val >> 4) & 0x3; 2512 sc->tx_ant = (val >> 2) & 0x3; 2513 sc->nb_ant = val & 0x3; 2514 2515 /* read default values for BBP registers */ 2516 for (i = 0; i < 16; i++) { 2517 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2518 if (val == 0 || val == 0xffff) 2519 continue; 2520 2521 sc->bbp_prom[i].reg = val >> 8; 2522 sc->bbp_prom[i].val = val & 0xff; 2523 } 2524 2525 /* read Tx power for all b/g channels */ 2526 for (i = 0; i < 14 / 2; i++) { 2527 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2528 sc->txpow[i * 2] = val & 0xff; 2529 sc->txpow[i * 2 + 1] = val >> 8; 2530 } 2531 for (i = 0; i < 14; ++i) { 2532 if (sc->txpow[i] > 31) 2533 sc->txpow[i] = 24; 2534 } 2535 2536 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2537 if ((val & 0xff) == 0xff) 2538 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2539 else 2540 sc->rssi_corr = val & 0xff; 2541 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2542 sc->rssi_corr, val); 2543} 2544 2545 2546static void 2547rt2560_scan_start(struct ieee80211com *ic) 2548{ 2549 struct ifnet *ifp = ic->ic_ifp; 2550 struct rt2560_softc *sc = ifp->if_softc; 2551 2552 /* abort TSF synchronization */ 2553 RAL_WRITE(sc, RT2560_CSR14, 0); 2554 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2555} 2556 2557static void 2558rt2560_scan_end(struct ieee80211com *ic) 2559{ 2560 struct ifnet *ifp = ic->ic_ifp; 2561 struct rt2560_softc *sc = ifp->if_softc; 2562 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2563 2564 rt2560_enable_tsf_sync(sc); 2565 /* XXX keep local copy */ 2566 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2567} 2568 2569static int 2570rt2560_bbp_init(struct rt2560_softc *sc) 2571{ 2572#define N(a) (sizeof (a) / sizeof ((a)[0])) 2573 int i, ntries; 2574 2575 /* wait for BBP to be ready */ 2576 for (ntries = 0; ntries < 100; ntries++) { 2577 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2578 break; 2579 DELAY(1); 2580 } 2581 if (ntries == 100) { 2582 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2583 return EIO; 2584 } 2585 2586 /* initialize BBP registers to default values */ 2587 for (i = 0; i < N(rt2560_def_bbp); i++) { 2588 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2589 rt2560_def_bbp[i].val); 2590 } 2591 2592 /* initialize BBP registers to values stored in EEPROM */ 2593 for (i = 0; i < 16; i++) { 2594 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2595 break; 2596 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2597 } 2598 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2599 2600 return 0; 2601#undef N 2602} 2603 2604static void 2605rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2606{ 2607 uint32_t tmp; 2608 uint8_t tx; 2609 2610 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2611 if (antenna == 1) 2612 tx |= RT2560_BBP_ANTA; 2613 else if (antenna == 2) 2614 tx |= RT2560_BBP_ANTB; 2615 else 2616 tx |= RT2560_BBP_DIVERSITY; 2617 2618 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2619 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2620 sc->rf_rev == RT2560_RF_5222) 2621 tx |= RT2560_BBP_FLIPIQ; 2622 2623 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2624 2625 /* update values for CCK and OFDM in BBPCSR1 */ 2626 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2627 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2628 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2629} 2630 2631static void 2632rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2633{ 2634 uint8_t rx; 2635 2636 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2637 if (antenna == 1) 2638 rx |= RT2560_BBP_ANTA; 2639 else if (antenna == 2) 2640 rx |= RT2560_BBP_ANTB; 2641 else 2642 rx |= RT2560_BBP_DIVERSITY; 2643 2644 /* need to force no I/Q flip for RF 2525e and 2526 */ 2645 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2646 rx &= ~RT2560_BBP_FLIPIQ; 2647 2648 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2649} 2650 2651static void 2652rt2560_init_locked(struct rt2560_softc *sc) 2653{ 2654#define N(a) (sizeof (a) / sizeof ((a)[0])) 2655 struct ifnet *ifp = sc->sc_ifp; 2656 struct ieee80211com *ic = ifp->if_l2com; 2657 uint32_t tmp; 2658 int i; 2659 2660 RAL_LOCK_ASSERT(sc); 2661 2662 rt2560_stop_locked(sc); 2663 2664 /* setup tx rings */ 2665 tmp = RT2560_PRIO_RING_COUNT << 24 | 2666 RT2560_ATIM_RING_COUNT << 16 | 2667 RT2560_TX_RING_COUNT << 8 | 2668 RT2560_TX_DESC_SIZE; 2669 2670 /* rings must be initialized in this exact order */ 2671 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2672 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2673 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2674 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2675 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2676 2677 /* setup rx ring */ 2678 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2679 2680 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2681 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2682 2683 /* initialize MAC registers to default values */ 2684 for (i = 0; i < N(rt2560_def_mac); i++) 2685 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2686 2687 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2688 2689 /* set basic rate set (will be updated later) */ 2690 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2691 2692 rt2560_update_slot(ifp); 2693 rt2560_update_plcp(sc); 2694 rt2560_update_led(sc, 0, 0); 2695 2696 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2697 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2698 2699 if (rt2560_bbp_init(sc) != 0) { 2700 rt2560_stop(sc); 2701 RAL_UNLOCK(sc); 2702 return; 2703 } 2704 2705 rt2560_set_txantenna(sc, sc->tx_ant); 2706 rt2560_set_rxantenna(sc, sc->rx_ant); 2707 2708 /* set default BSS channel */ 2709 rt2560_set_chan(sc, ic->ic_curchan); 2710 2711 /* kick Rx */ 2712 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2713 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2714 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2715 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2716 tmp |= RT2560_DROP_TODS; 2717 if (!(ifp->if_flags & IFF_PROMISC)) 2718 tmp |= RT2560_DROP_NOT_TO_ME; 2719 } 2720 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2721 2722 /* clear old FCS and Rx FIFO errors */ 2723 RAL_READ(sc, RT2560_CNT0); 2724 RAL_READ(sc, RT2560_CNT4); 2725 2726 /* clear any pending interrupts */ 2727 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2728 2729 /* enable interrupts */ 2730 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2731 2732 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2733 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2734 2735 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2736#undef N 2737} 2738 2739static void 2740rt2560_init(void *priv) 2741{ 2742 struct rt2560_softc *sc = priv; 2743 struct ifnet *ifp = sc->sc_ifp; 2744 struct ieee80211com *ic = ifp->if_l2com; 2745 2746 RAL_LOCK(sc); 2747 rt2560_init_locked(sc); 2748 RAL_UNLOCK(sc); 2749 2750 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2751 ieee80211_start_all(ic); /* start all vap's */ 2752} 2753 2754static void 2755rt2560_stop_locked(struct rt2560_softc *sc) 2756{ 2757 struct ifnet *ifp = sc->sc_ifp; 2758 volatile int *flags = &sc->sc_flags; 2759 2760 RAL_LOCK_ASSERT(sc); 2761 2762 while (*flags & RT2560_F_INPUT_RUNNING) 2763 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2764 2765 callout_stop(&sc->watchdog_ch); 2766 sc->sc_tx_timer = 0; 2767 2768 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2769 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2770 2771 /* abort Tx */ 2772 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2773 2774 /* disable Rx */ 2775 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2776 2777 /* reset ASIC (imply reset BBP) */ 2778 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2779 RAL_WRITE(sc, RT2560_CSR1, 0); 2780 2781 /* disable interrupts */ 2782 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2783 2784 /* reset Tx and Rx rings */ 2785 rt2560_reset_tx_ring(sc, &sc->txq); 2786 rt2560_reset_tx_ring(sc, &sc->atimq); 2787 rt2560_reset_tx_ring(sc, &sc->prioq); 2788 rt2560_reset_tx_ring(sc, &sc->bcnq); 2789 rt2560_reset_rx_ring(sc, &sc->rxq); 2790 } 2791 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2792} 2793 2794void 2795rt2560_stop(void *arg) 2796{ 2797 struct rt2560_softc *sc = arg; 2798 2799 RAL_LOCK(sc); 2800 rt2560_stop_locked(sc); 2801 RAL_UNLOCK(sc); 2802} 2803 2804static int 2805rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2806 const struct ieee80211_bpf_params *params) 2807{ 2808 struct ieee80211com *ic = ni->ni_ic; 2809 struct ifnet *ifp = ic->ic_ifp; 2810 struct rt2560_softc *sc = ifp->if_softc; 2811 2812 RAL_LOCK(sc); 2813 2814 /* prevent management frames from being sent if we're not ready */ 2815 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2816 RAL_UNLOCK(sc); 2817 m_freem(m); 2818 ieee80211_free_node(ni); 2819 return ENETDOWN; 2820 } 2821 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2822 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2823 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2824 RAL_UNLOCK(sc); 2825 m_freem(m); 2826 ieee80211_free_node(ni); 2827 return ENOBUFS; /* XXX */ 2828 } 2829 2830 ifp->if_opackets++; 2831 2832 if (params == NULL) { 2833 /* 2834 * Legacy path; interpret frame contents to decide 2835 * precisely how to send the frame. 2836 */ 2837 if (rt2560_tx_mgt(sc, m, ni) != 0) 2838 goto bad; 2839 } else { 2840 /* 2841 * Caller supplied explicit parameters to use in 2842 * sending the frame. 2843 */ 2844 if (rt2560_tx_raw(sc, m, ni, params)) 2845 goto bad; 2846 } 2847 sc->sc_tx_timer = 5; 2848 2849 RAL_UNLOCK(sc); 2850 2851 return 0; 2852bad: 2853 ifp->if_oerrors++; 2854 ieee80211_free_node(ni); 2855 RAL_UNLOCK(sc); 2856 return EIO; /* XXX */ 2857} 2858