rt2560.c revision 179643
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 179643 2008-06-07 18:38:02Z 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 179643 2008-06-07 18:38:02Z 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; 205 206 sc->sc_dev = dev; 207 208 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 209 MTX_DEF | MTX_RECURSE); 210 211 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 212 213 /* retrieve RT2560 rev. no */ 214 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 215 216 /* retrieve RF rev. no and various other things from EEPROM */ 217 rt2560_read_config(sc); 218 219 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 220 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 221 222 /* 223 * Allocate Tx and Rx rings. 224 */ 225 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 226 if (error != 0) { 227 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 228 goto fail1; 229 } 230 231 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 232 if (error != 0) { 233 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 234 goto fail2; 235 } 236 237 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 238 if (error != 0) { 239 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 240 goto fail3; 241 } 242 243 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 244 if (error != 0) { 245 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 246 goto fail4; 247 } 248 249 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 250 if (error != 0) { 251 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 252 goto fail5; 253 } 254 255 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 256 if (ifp == NULL) { 257 device_printf(sc->sc_dev, "can not if_alloc()\n"); 258 goto fail6; 259 } 260 ic = ifp->if_l2com; 261 262 /* retrieve MAC address */ 263 rt2560_get_macaddr(sc, ic->ic_myaddr); 264 265 ifp->if_softc = sc; 266 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 267 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 268 ifp->if_init = rt2560_init; 269 ifp->if_ioctl = rt2560_ioctl; 270 ifp->if_start = rt2560_start; 271 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 272 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 273 IFQ_SET_READY(&ifp->if_snd); 274 275 ic->ic_ifp = ifp; 276 ic->ic_opmode = IEEE80211_M_STA; 277 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 278 279 /* set device capabilities */ 280 ic->ic_caps = 281 IEEE80211_C_STA /* station mode */ 282 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 283 | IEEE80211_C_HOSTAP /* hostap mode */ 284 | IEEE80211_C_MONITOR /* monitor mode */ 285 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 286 | IEEE80211_C_WDS /* 4-address traffic works */ 287 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 288 | IEEE80211_C_SHSLOT /* short slot time supported */ 289 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 290 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 291#ifdef notyet 292 | IEEE80211_C_TXFRAG /* handle tx frags */ 293#endif 294 ; 295 296 bands = 0; 297 setbit(&bands, IEEE80211_MODE_11B); 298 setbit(&bands, IEEE80211_MODE_11G); 299 if (sc->rf_rev == RT2560_RF_5222) 300 setbit(&bands, IEEE80211_MODE_11A); 301 ieee80211_init_channels(ic, NULL, &bands); 302 303 ieee80211_ifattach(ic); 304 ic->ic_newassoc = rt2560_newassoc; 305 ic->ic_raw_xmit = rt2560_raw_xmit; 306 ic->ic_updateslot = rt2560_update_slot; 307 ic->ic_update_promisc = rt2560_update_promisc; 308 ic->ic_node_alloc = rt2560_node_alloc; 309 ic->ic_scan_start = rt2560_scan_start; 310 ic->ic_scan_end = rt2560_scan_end; 311 ic->ic_set_channel = rt2560_set_channel; 312 313 ic->ic_vap_create = rt2560_vap_create; 314 ic->ic_vap_delete = rt2560_vap_delete; 315 316 bpfattach(ifp, DLT_IEEE802_11_RADIO, 317 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 318 319 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 320 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 321 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT); 322 323 sc->sc_txtap_len = sizeof sc->sc_txtap; 324 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 325 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT); 326 327 /* 328 * Add a few sysctl knobs. 329 */ 330#ifdef RAL_DEBUG 331 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 333 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 334#endif 335 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 336 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 337 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 338 339 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 340 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 341 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 342 343 if (bootverbose) 344 ieee80211_announce(ic); 345 346 return 0; 347 348fail6: rt2560_free_rx_ring(sc, &sc->rxq); 349fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 350fail4: rt2560_free_tx_ring(sc, &sc->prioq); 351fail3: rt2560_free_tx_ring(sc, &sc->atimq); 352fail2: rt2560_free_tx_ring(sc, &sc->txq); 353fail1: mtx_destroy(&sc->sc_mtx); 354 355 return ENXIO; 356} 357 358int 359rt2560_detach(void *xsc) 360{ 361 struct rt2560_softc *sc = xsc; 362 struct ifnet *ifp = sc->sc_ifp; 363 struct ieee80211com *ic = ifp->if_l2com; 364 365 rt2560_stop(sc); 366 367 bpfdetach(ifp); 368 ieee80211_ifdetach(ic); 369 370 rt2560_free_tx_ring(sc, &sc->txq); 371 rt2560_free_tx_ring(sc, &sc->atimq); 372 rt2560_free_tx_ring(sc, &sc->prioq); 373 rt2560_free_tx_ring(sc, &sc->bcnq); 374 rt2560_free_rx_ring(sc, &sc->rxq); 375 376 if_free(ifp); 377 378 mtx_destroy(&sc->sc_mtx); 379 380 return 0; 381} 382 383static struct ieee80211vap * 384rt2560_vap_create(struct ieee80211com *ic, 385 const char name[IFNAMSIZ], int unit, int opmode, int flags, 386 const uint8_t bssid[IEEE80211_ADDR_LEN], 387 const uint8_t mac[IEEE80211_ADDR_LEN]) 388{ 389 struct ifnet *ifp = ic->ic_ifp; 390 struct rt2560_vap *rvp; 391 struct ieee80211vap *vap; 392 393 switch (opmode) { 394 case IEEE80211_M_STA: 395 case IEEE80211_M_IBSS: 396 case IEEE80211_M_AHDEMO: 397 case IEEE80211_M_MONITOR: 398 case IEEE80211_M_HOSTAP: 399 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 400 if_printf(ifp, "only 1 vap supported\n"); 401 return NULL; 402 } 403 if (opmode == IEEE80211_M_STA) 404 flags |= IEEE80211_CLONE_NOBEACONS; 405 break; 406 case IEEE80211_M_WDS: 407 if (TAILQ_EMPTY(&ic->ic_vaps) || 408 ic->ic_opmode != IEEE80211_M_HOSTAP) { 409 if_printf(ifp, "wds only supported in ap mode\n"); 410 return NULL; 411 } 412 /* 413 * Silently remove any request for a unique 414 * bssid; WDS vap's always share the local 415 * mac address. 416 */ 417 flags &= ~IEEE80211_CLONE_BSSID; 418 break; 419 default: 420 if_printf(ifp, "unknown opmode %d\n", opmode); 421 return NULL; 422 } 423 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 424 M_80211_VAP, M_NOWAIT | M_ZERO); 425 if (rvp == NULL) 426 return NULL; 427 vap = &rvp->ral_vap; 428 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 429 430 /* override state transition machine */ 431 rvp->ral_newstate = vap->iv_newstate; 432 vap->iv_newstate = rt2560_newstate; 433 vap->iv_update_beacon = rt2560_beacon_update; 434 435 ieee80211_amrr_init(&rvp->amrr, vap, 436 IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD, 437 IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD, 438 500 /* ms */); 439 440 /* complete setup */ 441 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 442 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 443 ic->ic_opmode = opmode; 444 return vap; 445} 446 447static void 448rt2560_vap_delete(struct ieee80211vap *vap) 449{ 450 struct rt2560_vap *rvp = RT2560_VAP(vap); 451 452 ieee80211_amrr_cleanup(&rvp->amrr); 453 ieee80211_vap_detach(vap); 454 free(rvp, M_80211_VAP); 455} 456 457void 458rt2560_resume(void *xsc) 459{ 460 struct rt2560_softc *sc = xsc; 461 struct ifnet *ifp = sc->sc_ifp; 462 463 if (ifp->if_flags & IFF_UP) 464 rt2560_init(sc); 465} 466 467static void 468rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 469{ 470 if (error != 0) 471 return; 472 473 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 474 475 *(bus_addr_t *)arg = segs[0].ds_addr; 476} 477 478static int 479rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 480 int count) 481{ 482 int i, error; 483 484 ring->count = count; 485 ring->queued = 0; 486 ring->cur = ring->next = 0; 487 ring->cur_encrypt = ring->next_encrypt = 0; 488 489 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 490 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 491 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 492 0, NULL, NULL, &ring->desc_dmat); 493 if (error != 0) { 494 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 495 goto fail; 496 } 497 498 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 499 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 500 if (error != 0) { 501 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 502 goto fail; 503 } 504 505 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 506 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 507 0); 508 if (error != 0) { 509 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 510 goto fail; 511 } 512 513 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 514 M_NOWAIT | M_ZERO); 515 if (ring->data == NULL) { 516 device_printf(sc->sc_dev, "could not allocate soft data\n"); 517 error = ENOMEM; 518 goto fail; 519 } 520 521 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 522 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 523 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 524 &ring->data_dmat); 525 if (error != 0) { 526 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 527 goto fail; 528 } 529 530 for (i = 0; i < count; i++) { 531 error = bus_dmamap_create(ring->data_dmat, 0, 532 &ring->data[i].map); 533 if (error != 0) { 534 device_printf(sc->sc_dev, "could not create DMA map\n"); 535 goto fail; 536 } 537 } 538 539 return 0; 540 541fail: rt2560_free_tx_ring(sc, ring); 542 return error; 543} 544 545static void 546rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 547{ 548 struct rt2560_tx_desc *desc; 549 struct rt2560_tx_data *data; 550 int i; 551 552 for (i = 0; i < ring->count; i++) { 553 desc = &ring->desc[i]; 554 data = &ring->data[i]; 555 556 if (data->m != NULL) { 557 bus_dmamap_sync(ring->data_dmat, data->map, 558 BUS_DMASYNC_POSTWRITE); 559 bus_dmamap_unload(ring->data_dmat, data->map); 560 m_freem(data->m); 561 data->m = NULL; 562 } 563 564 if (data->ni != NULL) { 565 ieee80211_free_node(data->ni); 566 data->ni = NULL; 567 } 568 569 desc->flags = 0; 570 } 571 572 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 573 574 ring->queued = 0; 575 ring->cur = ring->next = 0; 576 ring->cur_encrypt = ring->next_encrypt = 0; 577} 578 579static void 580rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 581{ 582 struct rt2560_tx_data *data; 583 int i; 584 585 if (ring->desc != NULL) { 586 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 587 BUS_DMASYNC_POSTWRITE); 588 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 589 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 590 } 591 592 if (ring->desc_dmat != NULL) 593 bus_dma_tag_destroy(ring->desc_dmat); 594 595 if (ring->data != NULL) { 596 for (i = 0; i < ring->count; i++) { 597 data = &ring->data[i]; 598 599 if (data->m != NULL) { 600 bus_dmamap_sync(ring->data_dmat, data->map, 601 BUS_DMASYNC_POSTWRITE); 602 bus_dmamap_unload(ring->data_dmat, data->map); 603 m_freem(data->m); 604 } 605 606 if (data->ni != NULL) 607 ieee80211_free_node(data->ni); 608 609 if (data->map != NULL) 610 bus_dmamap_destroy(ring->data_dmat, data->map); 611 } 612 613 free(ring->data, M_DEVBUF); 614 } 615 616 if (ring->data_dmat != NULL) 617 bus_dma_tag_destroy(ring->data_dmat); 618} 619 620static int 621rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 622 int count) 623{ 624 struct rt2560_rx_desc *desc; 625 struct rt2560_rx_data *data; 626 bus_addr_t physaddr; 627 int i, error; 628 629 ring->count = count; 630 ring->cur = ring->next = 0; 631 ring->cur_decrypt = 0; 632 633 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 634 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 635 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 636 0, NULL, NULL, &ring->desc_dmat); 637 if (error != 0) { 638 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 639 goto fail; 640 } 641 642 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 643 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 644 if (error != 0) { 645 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 646 goto fail; 647 } 648 649 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 650 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 651 0); 652 if (error != 0) { 653 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 654 goto fail; 655 } 656 657 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 658 M_NOWAIT | M_ZERO); 659 if (ring->data == NULL) { 660 device_printf(sc->sc_dev, "could not allocate soft data\n"); 661 error = ENOMEM; 662 goto fail; 663 } 664 665 /* 666 * Pre-allocate Rx buffers and populate Rx ring. 667 */ 668 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 669 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 670 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 671 if (error != 0) { 672 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 673 goto fail; 674 } 675 676 for (i = 0; i < count; i++) { 677 desc = &sc->rxq.desc[i]; 678 data = &sc->rxq.data[i]; 679 680 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 681 if (error != 0) { 682 device_printf(sc->sc_dev, "could not create DMA map\n"); 683 goto fail; 684 } 685 686 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 687 if (data->m == NULL) { 688 device_printf(sc->sc_dev, 689 "could not allocate rx mbuf\n"); 690 error = ENOMEM; 691 goto fail; 692 } 693 694 error = bus_dmamap_load(ring->data_dmat, data->map, 695 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 696 &physaddr, 0); 697 if (error != 0) { 698 device_printf(sc->sc_dev, 699 "could not load rx buf DMA map"); 700 goto fail; 701 } 702 703 desc->flags = htole32(RT2560_RX_BUSY); 704 desc->physaddr = htole32(physaddr); 705 } 706 707 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 708 709 return 0; 710 711fail: rt2560_free_rx_ring(sc, ring); 712 return error; 713} 714 715static void 716rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 717{ 718 int i; 719 720 for (i = 0; i < ring->count; i++) { 721 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 722 ring->data[i].drop = 0; 723 } 724 725 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 726 727 ring->cur = ring->next = 0; 728 ring->cur_decrypt = 0; 729} 730 731static void 732rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 733{ 734 struct rt2560_rx_data *data; 735 int i; 736 737 if (ring->desc != NULL) { 738 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 739 BUS_DMASYNC_POSTWRITE); 740 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 741 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 742 } 743 744 if (ring->desc_dmat != NULL) 745 bus_dma_tag_destroy(ring->desc_dmat); 746 747 if (ring->data != NULL) { 748 for (i = 0; i < ring->count; i++) { 749 data = &ring->data[i]; 750 751 if (data->m != NULL) { 752 bus_dmamap_sync(ring->data_dmat, data->map, 753 BUS_DMASYNC_POSTREAD); 754 bus_dmamap_unload(ring->data_dmat, data->map); 755 m_freem(data->m); 756 } 757 758 if (data->map != NULL) 759 bus_dmamap_destroy(ring->data_dmat, data->map); 760 } 761 762 free(ring->data, M_DEVBUF); 763 } 764 765 if (ring->data_dmat != NULL) 766 bus_dma_tag_destroy(ring->data_dmat); 767} 768 769static struct ieee80211_node * 770rt2560_node_alloc(struct ieee80211vap *vap, 771 const uint8_t mac[IEEE80211_ADDR_LEN]) 772{ 773 struct rt2560_node *rn; 774 775 rn = malloc(sizeof (struct rt2560_node), M_80211_NODE, 776 M_NOWAIT | M_ZERO); 777 778 return (rn != NULL) ? &rn->ni : NULL; 779} 780 781static void 782rt2560_newassoc(struct ieee80211_node *ni, int isnew) 783{ 784 struct ieee80211vap *vap = ni->ni_vap; 785 786 ieee80211_amrr_node_init(&RT2560_VAP(vap)->amrr, 787 &RT2560_NODE(ni)->amrr, ni); 788} 789 790static int 791rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 792{ 793 struct rt2560_vap *rvp = RT2560_VAP(vap); 794 struct ifnet *ifp = vap->iv_ic->ic_ifp; 795 struct rt2560_softc *sc = ifp->if_softc; 796 int error; 797 798 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 799 /* abort TSF synchronization */ 800 RAL_WRITE(sc, RT2560_CSR14, 0); 801 802 /* turn association led off */ 803 rt2560_update_led(sc, 0, 0); 804 } 805 806 error = rvp->ral_newstate(vap, nstate, arg); 807 808 if (error == 0 && nstate == IEEE80211_S_RUN) { 809 struct ieee80211_node *ni = vap->iv_bss; 810 struct mbuf *m; 811 812 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 813 rt2560_update_plcp(sc); 814 rt2560_set_basicrates(sc); 815 rt2560_set_bssid(sc, ni->ni_bssid); 816 } 817 818 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 819 vap->iv_opmode == IEEE80211_M_IBSS) { 820 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 821 if (m == NULL) { 822 if_printf(ifp, "could not allocate beacon\n"); 823 return ENOBUFS; 824 } 825 ieee80211_ref_node(ni); 826 error = rt2560_tx_bcn(sc, m, ni); 827 if (error != 0) 828 return error; 829 } 830 831 /* turn assocation led on */ 832 rt2560_update_led(sc, 1, 0); 833 834 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 835 if (vap->iv_opmode == IEEE80211_M_STA) { 836 /* fake a join to init the tx rate */ 837 rt2560_newassoc(ni, 1); 838 } 839 rt2560_enable_tsf_sync(sc); 840 } 841 } 842 return error; 843} 844 845/* 846 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 847 * 93C66). 848 */ 849static uint16_t 850rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 851{ 852 uint32_t tmp; 853 uint16_t val; 854 int n; 855 856 /* clock C once before the first command */ 857 RT2560_EEPROM_CTL(sc, 0); 858 859 RT2560_EEPROM_CTL(sc, RT2560_S); 860 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 861 RT2560_EEPROM_CTL(sc, RT2560_S); 862 863 /* write start bit (1) */ 864 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 865 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 866 867 /* write READ opcode (10) */ 868 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 869 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 870 RT2560_EEPROM_CTL(sc, RT2560_S); 871 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 872 873 /* write address (A5-A0 or A7-A0) */ 874 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 875 for (; n >= 0; n--) { 876 RT2560_EEPROM_CTL(sc, RT2560_S | 877 (((addr >> n) & 1) << RT2560_SHIFT_D)); 878 RT2560_EEPROM_CTL(sc, RT2560_S | 879 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 880 } 881 882 RT2560_EEPROM_CTL(sc, RT2560_S); 883 884 /* read data Q15-Q0 */ 885 val = 0; 886 for (n = 15; n >= 0; n--) { 887 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 888 tmp = RAL_READ(sc, RT2560_CSR21); 889 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 890 RT2560_EEPROM_CTL(sc, RT2560_S); 891 } 892 893 RT2560_EEPROM_CTL(sc, 0); 894 895 /* clear Chip Select and clock C */ 896 RT2560_EEPROM_CTL(sc, RT2560_S); 897 RT2560_EEPROM_CTL(sc, 0); 898 RT2560_EEPROM_CTL(sc, RT2560_C); 899 900 return val; 901} 902 903/* 904 * Some frames were processed by the hardware cipher engine and are ready for 905 * transmission. 906 */ 907static void 908rt2560_encryption_intr(struct rt2560_softc *sc) 909{ 910 struct rt2560_tx_desc *desc; 911 int hw; 912 913 /* retrieve last descriptor index processed by cipher engine */ 914 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 915 hw /= RT2560_TX_DESC_SIZE; 916 917 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 918 BUS_DMASYNC_POSTREAD); 919 920 while (sc->txq.next_encrypt != hw) { 921 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 922 printf("hw encrypt %d, cur_encrypt %d\n", hw, 923 sc->txq.cur_encrypt); 924 break; 925 } 926 927 desc = &sc->txq.desc[sc->txq.next_encrypt]; 928 929 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 930 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 931 break; 932 933 /* for TKIP, swap eiv field to fix a bug in ASIC */ 934 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 935 RT2560_TX_CIPHER_TKIP) 936 desc->eiv = bswap32(desc->eiv); 937 938 /* mark the frame ready for transmission */ 939 desc->flags |= htole32(RT2560_TX_VALID); 940 desc->flags |= htole32(RT2560_TX_BUSY); 941 942 DPRINTFN(sc, 15, "encryption done idx=%u\n", 943 sc->txq.next_encrypt); 944 945 sc->txq.next_encrypt = 946 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 947 } 948 949 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 950 BUS_DMASYNC_PREWRITE); 951 952 /* kick Tx */ 953 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 954} 955 956static void 957rt2560_tx_intr(struct rt2560_softc *sc) 958{ 959 struct ifnet *ifp = sc->sc_ifp; 960 struct rt2560_tx_desc *desc; 961 struct rt2560_tx_data *data; 962 struct rt2560_node *rn; 963 struct mbuf *m; 964 uint32_t flags; 965 int retrycnt; 966 967 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 968 BUS_DMASYNC_POSTREAD); 969 970 for (;;) { 971 desc = &sc->txq.desc[sc->txq.next]; 972 data = &sc->txq.data[sc->txq.next]; 973 974 flags = le32toh(desc->flags); 975 if ((flags & RT2560_TX_BUSY) || 976 (flags & RT2560_TX_CIPHER_BUSY) || 977 !(flags & RT2560_TX_VALID)) 978 break; 979 980 rn = (struct rt2560_node *)data->ni; 981 m = data->m; 982 983 switch (flags & RT2560_TX_RESULT_MASK) { 984 case RT2560_TX_SUCCESS: 985 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 986 if (data->rix != IEEE80211_FIXED_RATE_NONE) 987 ieee80211_amrr_tx_complete(&rn->amrr, 988 IEEE80211_AMRR_SUCCESS, 0); 989 ifp->if_opackets++; 990 break; 991 992 case RT2560_TX_SUCCESS_RETRY: 993 retrycnt = RT2560_TX_RETRYCNT(flags); 994 995 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 996 retrycnt); 997 if (data->rix != IEEE80211_FIXED_RATE_NONE) 998 ieee80211_amrr_tx_complete(&rn->amrr, 999 IEEE80211_AMRR_SUCCESS, retrycnt); 1000 ifp->if_opackets++; 1001 break; 1002 1003 case RT2560_TX_FAIL_RETRY: 1004 retrycnt = RT2560_TX_RETRYCNT(flags); 1005 1006 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 1007 retrycnt); 1008 if (data->rix != IEEE80211_FIXED_RATE_NONE) 1009 ieee80211_amrr_tx_complete(&rn->amrr, 1010 IEEE80211_AMRR_FAILURE, retrycnt); 1011 ifp->if_oerrors++; 1012 break; 1013 1014 case RT2560_TX_FAIL_INVALID: 1015 case RT2560_TX_FAIL_OTHER: 1016 default: 1017 device_printf(sc->sc_dev, "sending data frame failed " 1018 "0x%08x\n", flags); 1019 ifp->if_oerrors++; 1020 } 1021 1022 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1023 BUS_DMASYNC_POSTWRITE); 1024 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1025 m_freem(m); 1026 data->m = NULL; 1027 ieee80211_free_node(data->ni); 1028 data->ni = NULL; 1029 1030 /* descriptor is no longer valid */ 1031 desc->flags &= ~htole32(RT2560_TX_VALID); 1032 1033 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1034 1035 sc->txq.queued--; 1036 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1037 } 1038 1039 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1040 BUS_DMASYNC_PREWRITE); 1041 1042 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1043 sc->sc_tx_timer = 0; 1044 1045 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1046 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1047 if ((sc->sc_flags & 1048 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1049 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1050 rt2560_start_locked(ifp); 1051 } 1052} 1053 1054static void 1055rt2560_prio_intr(struct rt2560_softc *sc) 1056{ 1057 struct ifnet *ifp = sc->sc_ifp; 1058 struct rt2560_tx_desc *desc; 1059 struct rt2560_tx_data *data; 1060 struct ieee80211_node *ni; 1061 struct mbuf *m; 1062 int flags; 1063 1064 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1065 BUS_DMASYNC_POSTREAD); 1066 1067 for (;;) { 1068 desc = &sc->prioq.desc[sc->prioq.next]; 1069 data = &sc->prioq.data[sc->prioq.next]; 1070 1071 flags = le32toh(desc->flags); 1072 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1073 break; 1074 1075 switch (flags & RT2560_TX_RESULT_MASK) { 1076 case RT2560_TX_SUCCESS: 1077 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1078 break; 1079 1080 case RT2560_TX_SUCCESS_RETRY: 1081 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1082 (flags >> 5) & 0x7); 1083 break; 1084 1085 case RT2560_TX_FAIL_RETRY: 1086 DPRINTFN(sc, 9, "%s\n", 1087 "sending mgt frame failed (too much retries)"); 1088 break; 1089 1090 case RT2560_TX_FAIL_INVALID: 1091 case RT2560_TX_FAIL_OTHER: 1092 default: 1093 device_printf(sc->sc_dev, "sending mgt frame failed " 1094 "0x%08x\n", flags); 1095 break; 1096 } 1097 1098 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1099 BUS_DMASYNC_POSTWRITE); 1100 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1101 1102 m = data->m; 1103 data->m = NULL; 1104 ni = data->ni; 1105 data->ni = NULL; 1106 1107 /* descriptor is no longer valid */ 1108 desc->flags &= ~htole32(RT2560_TX_VALID); 1109 1110 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1111 1112 sc->prioq.queued--; 1113 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1114 1115 if (m->m_flags & M_TXCB) 1116 ieee80211_process_callback(ni, m, 1117 (flags & RT2560_TX_RESULT_MASK) &~ 1118 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1119 m_freem(m); 1120 ieee80211_free_node(ni); 1121 } 1122 1123 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1124 BUS_DMASYNC_PREWRITE); 1125 1126 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1127 sc->sc_tx_timer = 0; 1128 1129 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1130 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1131 if ((sc->sc_flags & 1132 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1133 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1134 rt2560_start_locked(ifp); 1135 } 1136} 1137 1138/* 1139 * Some frames were processed by the hardware cipher engine and are ready for 1140 * handoff to the IEEE802.11 layer. 1141 */ 1142static void 1143rt2560_decryption_intr(struct rt2560_softc *sc) 1144{ 1145 struct ifnet *ifp = sc->sc_ifp; 1146 struct ieee80211com *ic = ifp->if_l2com; 1147 struct rt2560_rx_desc *desc; 1148 struct rt2560_rx_data *data; 1149 bus_addr_t physaddr; 1150 struct ieee80211_frame *wh; 1151 struct ieee80211_node *ni; 1152 struct mbuf *mnew, *m; 1153 int hw, error; 1154 1155 /* retrieve last decriptor index processed by cipher engine */ 1156 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1157 hw /= RT2560_RX_DESC_SIZE; 1158 1159 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1160 BUS_DMASYNC_POSTREAD); 1161 1162 for (; sc->rxq.cur_decrypt != hw;) { 1163 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1164 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1165 1166 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1167 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1168 break; 1169 1170 if (data->drop) { 1171 ifp->if_ierrors++; 1172 goto skip; 1173 } 1174 1175 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1176 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1177 ifp->if_ierrors++; 1178 goto skip; 1179 } 1180 1181 /* 1182 * Try to allocate a new mbuf for this ring element and load it 1183 * before processing the current mbuf. If the ring element 1184 * cannot be loaded, drop the received packet and reuse the old 1185 * mbuf. In the unlikely case that the old mbuf can't be 1186 * reloaded either, explicitly panic. 1187 */ 1188 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1189 if (mnew == NULL) { 1190 ifp->if_ierrors++; 1191 goto skip; 1192 } 1193 1194 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1195 BUS_DMASYNC_POSTREAD); 1196 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1197 1198 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1199 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1200 &physaddr, 0); 1201 if (error != 0) { 1202 m_freem(mnew); 1203 1204 /* try to reload the old mbuf */ 1205 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1206 mtod(data->m, void *), MCLBYTES, 1207 rt2560_dma_map_addr, &physaddr, 0); 1208 if (error != 0) { 1209 /* very unlikely that it will fail... */ 1210 panic("%s: could not load old rx mbuf", 1211 device_get_name(sc->sc_dev)); 1212 } 1213 ifp->if_ierrors++; 1214 goto skip; 1215 } 1216 1217 /* 1218 * New mbuf successfully loaded, update Rx ring and continue 1219 * processing. 1220 */ 1221 m = data->m; 1222 data->m = mnew; 1223 desc->physaddr = htole32(physaddr); 1224 1225 /* finalize mbuf */ 1226 m->m_pkthdr.rcvif = ifp; 1227 m->m_pkthdr.len = m->m_len = 1228 (le32toh(desc->flags) >> 16) & 0xfff; 1229 1230 if (bpf_peers_present(ifp->if_bpf)) { 1231 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1232 uint32_t tsf_lo, tsf_hi; 1233 1234 /* get timestamp (low and high 32 bits) */ 1235 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1236 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1237 1238 tap->wr_tsf = 1239 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1240 tap->wr_flags = 0; 1241 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1242 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1243 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1244 tap->wr_antenna = sc->rx_ant; 1245 tap->wr_antsignal = RT2560_RSSI(sc, desc->rssi); 1246 1247 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1248 } 1249 1250 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1251 RAL_UNLOCK(sc); 1252 wh = mtod(m, struct ieee80211_frame *); 1253 ni = ieee80211_find_rxnode(ic, 1254 (struct ieee80211_frame_min *)wh); 1255 if (ni != NULL) { 1256 (void) ieee80211_input(ni, m, 1257 RT2560_RSSI(sc, desc->rssi), RT2560_NOISE_FLOOR, 0); 1258 ieee80211_free_node(ni); 1259 } else 1260 (void) ieee80211_input_all(ic, m, 1261 RT2560_RSSI(sc, desc->rssi), RT2560_NOISE_FLOOR, 0); 1262 1263 RAL_LOCK(sc); 1264 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1265skip: desc->flags = htole32(RT2560_RX_BUSY); 1266 1267 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1268 1269 sc->rxq.cur_decrypt = 1270 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1271 } 1272 1273 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1274 BUS_DMASYNC_PREWRITE); 1275} 1276 1277/* 1278 * Some frames were received. Pass them to the hardware cipher engine before 1279 * sending them to the 802.11 layer. 1280 */ 1281static void 1282rt2560_rx_intr(struct rt2560_softc *sc) 1283{ 1284 struct rt2560_rx_desc *desc; 1285 struct rt2560_rx_data *data; 1286 1287 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1288 BUS_DMASYNC_POSTREAD); 1289 1290 for (;;) { 1291 desc = &sc->rxq.desc[sc->rxq.cur]; 1292 data = &sc->rxq.data[sc->rxq.cur]; 1293 1294 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1295 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1296 break; 1297 1298 data->drop = 0; 1299 1300 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1301 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1302 /* 1303 * This should not happen since we did not request 1304 * to receive those frames when we filled RXCSR0. 1305 */ 1306 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1307 le32toh(desc->flags)); 1308 data->drop = 1; 1309 } 1310 1311 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1312 DPRINTFN(sc, 5, "%s\n", "bad length"); 1313 data->drop = 1; 1314 } 1315 1316 /* mark the frame for decryption */ 1317 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1318 1319 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1320 1321 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1322 } 1323 1324 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1325 BUS_DMASYNC_PREWRITE); 1326 1327 /* kick decrypt */ 1328 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1329} 1330 1331static void 1332rt2560_beacon_update(struct ieee80211vap *vap, int item) 1333{ 1334 struct rt2560_vap *rvp = RT2560_VAP(vap); 1335 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1336 1337 setbit(bo->bo_flags, item); 1338} 1339 1340/* 1341 * This function is called periodically in IBSS mode when a new beacon must be 1342 * sent out. 1343 */ 1344static void 1345rt2560_beacon_expire(struct rt2560_softc *sc) 1346{ 1347 struct ifnet *ifp = sc->sc_ifp; 1348 struct ieee80211com *ic = ifp->if_l2com; 1349 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1350 struct rt2560_vap *rvp = RT2560_VAP(vap); 1351 struct rt2560_tx_data *data; 1352 1353 if (ic->ic_opmode != IEEE80211_M_IBSS && 1354 ic->ic_opmode != IEEE80211_M_HOSTAP) 1355 return; 1356 1357 data = &sc->bcnq.data[sc->bcnq.next]; 1358 /* 1359 * Don't send beacon if bsschan isn't set 1360 */ 1361 if (data->ni == NULL) 1362 return; 1363 1364 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1365 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1366 1367 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1368 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1369 1370 rt2560_tx_bcn(sc, data->m, data->ni); 1371 1372 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1373 1374 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1375} 1376 1377/* ARGSUSED */ 1378static void 1379rt2560_wakeup_expire(struct rt2560_softc *sc) 1380{ 1381 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1382} 1383 1384void 1385rt2560_intr(void *arg) 1386{ 1387 struct rt2560_softc *sc = arg; 1388 struct ifnet *ifp = sc->sc_ifp; 1389 uint32_t r; 1390 1391 RAL_LOCK(sc); 1392 1393 /* disable interrupts */ 1394 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1395 1396 /* don't re-enable interrupts if we're shutting down */ 1397 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1398 RAL_UNLOCK(sc); 1399 return; 1400 } 1401 1402 r = RAL_READ(sc, RT2560_CSR7); 1403 RAL_WRITE(sc, RT2560_CSR7, r); 1404 1405 if (r & RT2560_BEACON_EXPIRE) 1406 rt2560_beacon_expire(sc); 1407 1408 if (r & RT2560_WAKEUP_EXPIRE) 1409 rt2560_wakeup_expire(sc); 1410 1411 if (r & RT2560_ENCRYPTION_DONE) 1412 rt2560_encryption_intr(sc); 1413 1414 if (r & RT2560_TX_DONE) 1415 rt2560_tx_intr(sc); 1416 1417 if (r & RT2560_PRIO_DONE) 1418 rt2560_prio_intr(sc); 1419 1420 if (r & RT2560_DECRYPTION_DONE) 1421 rt2560_decryption_intr(sc); 1422 1423 if (r & RT2560_RX_DONE) { 1424 rt2560_rx_intr(sc); 1425 rt2560_encryption_intr(sc); 1426 } 1427 1428 /* re-enable interrupts */ 1429 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1430 1431 RAL_UNLOCK(sc); 1432} 1433 1434#define RAL_SIFS 10 /* us */ 1435 1436#define RT2560_TXRX_TURNAROUND 10 /* us */ 1437 1438static uint8_t 1439rt2560_plcp_signal(int rate) 1440{ 1441 switch (rate) { 1442 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1443 case 12: return 0xb; 1444 case 18: return 0xf; 1445 case 24: return 0xa; 1446 case 36: return 0xe; 1447 case 48: return 0x9; 1448 case 72: return 0xd; 1449 case 96: return 0x8; 1450 case 108: return 0xc; 1451 1452 /* CCK rates (NB: not IEEE std, device-specific) */ 1453 case 2: return 0x0; 1454 case 4: return 0x1; 1455 case 11: return 0x2; 1456 case 22: return 0x3; 1457 } 1458 return 0xff; /* XXX unsupported/unknown rate */ 1459} 1460 1461static void 1462rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1463 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1464{ 1465 struct ifnet *ifp = sc->sc_ifp; 1466 struct ieee80211com *ic = ifp->if_l2com; 1467 uint16_t plcp_length; 1468 int remainder; 1469 1470 desc->flags = htole32(flags); 1471 desc->flags |= htole32(len << 16); 1472 1473 desc->physaddr = htole32(physaddr); 1474 desc->wme = htole16( 1475 RT2560_AIFSN(2) | 1476 RT2560_LOGCWMIN(3) | 1477 RT2560_LOGCWMAX(8)); 1478 1479 /* setup PLCP fields */ 1480 desc->plcp_signal = rt2560_plcp_signal(rate); 1481 desc->plcp_service = 4; 1482 1483 len += IEEE80211_CRC_LEN; 1484 if (ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) { 1485 desc->flags |= htole32(RT2560_TX_OFDM); 1486 1487 plcp_length = len & 0xfff; 1488 desc->plcp_length_hi = plcp_length >> 6; 1489 desc->plcp_length_lo = plcp_length & 0x3f; 1490 } else { 1491 plcp_length = (16 * len + rate - 1) / rate; 1492 if (rate == 22) { 1493 remainder = (16 * len) % 22; 1494 if (remainder != 0 && remainder < 7) 1495 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1496 } 1497 desc->plcp_length_hi = plcp_length >> 8; 1498 desc->plcp_length_lo = plcp_length & 0xff; 1499 1500 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1501 desc->plcp_signal |= 0x08; 1502 } 1503 1504 if (!encrypt) 1505 desc->flags |= htole32(RT2560_TX_VALID); 1506 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1507 : htole32(RT2560_TX_BUSY); 1508} 1509 1510static int 1511rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1512 struct ieee80211_node *ni) 1513{ 1514 struct ieee80211vap *vap = ni->ni_vap; 1515 struct ieee80211com *ic = ni->ni_ic; 1516 struct ifnet *ifp = sc->sc_ifp; 1517 struct rt2560_tx_desc *desc; 1518 struct rt2560_tx_data *data; 1519 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1520 int nsegs, rate, error; 1521 1522 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1523 data = &sc->bcnq.data[sc->bcnq.cur]; 1524 1525 /* XXX maybe a separate beacon rate? */ 1526 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1527 1528 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1529 segs, &nsegs, BUS_DMA_NOWAIT); 1530 if (error != 0) { 1531 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1532 error); 1533 m_freem(m0); 1534 return error; 1535 } 1536 1537 if (bpf_peers_present(ifp->if_bpf)) { 1538 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1539 1540 tap->wt_flags = 0; 1541 tap->wt_rate = rate; 1542 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1543 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1544 tap->wt_antenna = sc->tx_ant; 1545 1546 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1547 } 1548 1549 data->m = m0; 1550 data->ni = ni; 1551 1552 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1553 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1554 1555 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1556 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1557 1558 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1559 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1560 BUS_DMASYNC_PREWRITE); 1561 1562 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1563 1564 return 0; 1565} 1566 1567static int 1568rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1569 struct ieee80211_node *ni) 1570{ 1571 struct ieee80211vap *vap = ni->ni_vap; 1572 struct ieee80211com *ic = ni->ni_ic; 1573 struct ifnet *ifp = sc->sc_ifp; 1574 struct rt2560_tx_desc *desc; 1575 struct rt2560_tx_data *data; 1576 struct ieee80211_frame *wh; 1577 struct ieee80211_key *k; 1578 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1579 uint16_t dur; 1580 uint32_t flags = 0; 1581 int nsegs, rate, error; 1582 1583 desc = &sc->prioq.desc[sc->prioq.cur]; 1584 data = &sc->prioq.data[sc->prioq.cur]; 1585 1586 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1587 1588 wh = mtod(m0, struct ieee80211_frame *); 1589 1590 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1591 k = ieee80211_crypto_encap(ni, m0); 1592 if (k == NULL) { 1593 m_freem(m0); 1594 return ENOBUFS; 1595 } 1596 } 1597 1598 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1599 segs, &nsegs, 0); 1600 if (error != 0) { 1601 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1602 error); 1603 m_freem(m0); 1604 return error; 1605 } 1606 1607 if (bpf_peers_present(ifp->if_bpf)) { 1608 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1609 1610 tap->wt_flags = 0; 1611 tap->wt_rate = rate; 1612 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1613 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1614 tap->wt_antenna = sc->tx_ant; 1615 1616 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1617 } 1618 1619 data->m = m0; 1620 data->ni = ni; 1621 /* management frames are not taken into account for amrr */ 1622 data->rix = IEEE80211_FIXED_RATE_NONE; 1623 1624 wh = mtod(m0, struct ieee80211_frame *); 1625 1626 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1627 flags |= RT2560_TX_ACK; 1628 1629 dur = ieee80211_ack_duration(sc->sc_rates, 1630 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1631 *(uint16_t *)wh->i_dur = htole16(dur); 1632 1633 /* tell hardware to add timestamp for probe responses */ 1634 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1635 IEEE80211_FC0_TYPE_MGT && 1636 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1637 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1638 flags |= RT2560_TX_TIMESTAMP; 1639 } 1640 1641 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1642 segs->ds_addr); 1643 1644 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1645 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1646 BUS_DMASYNC_PREWRITE); 1647 1648 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1649 m0->m_pkthdr.len, sc->prioq.cur, rate); 1650 1651 /* kick prio */ 1652 sc->prioq.queued++; 1653 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1654 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1655 1656 return 0; 1657} 1658 1659static int 1660rt2560_sendprot(struct rt2560_softc *sc, 1661 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1662{ 1663 struct ieee80211com *ic = ni->ni_ic; 1664 const struct ieee80211_frame *wh; 1665 struct rt2560_tx_desc *desc; 1666 struct rt2560_tx_data *data; 1667 struct mbuf *mprot; 1668 int protrate, ackrate, pktlen, flags, isshort, error; 1669 uint16_t dur; 1670 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1671 int nsegs; 1672 1673 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1674 ("protection %d", prot)); 1675 1676 wh = mtod(m, const struct ieee80211_frame *); 1677 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1678 1679 protrate = ieee80211_ctl_rate(sc->sc_rates, rate); 1680 ackrate = ieee80211_ack_rate(sc->sc_rates, rate); 1681 1682 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1683 dur = ieee80211_compute_duration(sc->sc_rates, pktlen, rate, isshort) 1684 + ieee80211_ack_duration(sc->sc_rates, rate, isshort); 1685 flags = RT2560_TX_MORE_FRAG; 1686 if (prot == IEEE80211_PROT_RTSCTS) { 1687 /* NB: CTS is the same size as an ACK */ 1688 dur += ieee80211_ack_duration(sc->sc_rates, rate, isshort); 1689 flags |= RT2560_TX_ACK; 1690 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1691 } else { 1692 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1693 } 1694 if (mprot == NULL) { 1695 /* XXX stat + msg */ 1696 return ENOBUFS; 1697 } 1698 1699 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1700 data = &sc->txq.data[sc->txq.cur_encrypt]; 1701 1702 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1703 mprot, segs, &nsegs, 0); 1704 if (error != 0) { 1705 device_printf(sc->sc_dev, 1706 "could not map mbuf (error %d)\n", error); 1707 m_freem(mprot); 1708 return error; 1709 } 1710 1711 data->m = mprot; 1712 data->ni = ieee80211_ref_node(ni); 1713 /* ctl frames are not taken into account for amrr */ 1714 data->rix = IEEE80211_FIXED_RATE_NONE; 1715 1716 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1717 segs->ds_addr); 1718 1719 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1720 BUS_DMASYNC_PREWRITE); 1721 1722 sc->txq.queued++; 1723 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1724 1725 return 0; 1726} 1727 1728static int 1729rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1730 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1731{ 1732 struct ifnet *ifp = sc->sc_ifp; 1733 struct ieee80211com *ic = ifp->if_l2com; 1734 struct rt2560_tx_desc *desc; 1735 struct rt2560_tx_data *data; 1736 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1737 uint32_t flags; 1738 int nsegs, rate, error; 1739 1740 desc = &sc->prioq.desc[sc->prioq.cur]; 1741 data = &sc->prioq.data[sc->prioq.cur]; 1742 1743 rate = params->ibp_rate0 & IEEE80211_RATE_VAL; 1744 /* XXX validate */ 1745 if (rate == 0) { 1746 /* XXX fall back to mcast/mgmt rate? */ 1747 m_freem(m0); 1748 return EINVAL; 1749 } 1750 1751 flags = 0; 1752 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1753 flags |= RT2560_TX_ACK; 1754 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1755 error = rt2560_sendprot(sc, m0, ni, 1756 params->ibp_flags & IEEE80211_BPF_RTS ? 1757 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1758 rate); 1759 if (error) { 1760 m_freem(m0); 1761 return error; 1762 } 1763 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1764 } 1765 1766 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1767 segs, &nsegs, 0); 1768 if (error != 0) { 1769 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1770 error); 1771 m_freem(m0); 1772 return error; 1773 } 1774 1775 if (bpf_peers_present(ifp->if_bpf)) { 1776 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1777 1778 tap->wt_flags = 0; 1779 tap->wt_rate = rate; 1780 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1781 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1782 tap->wt_antenna = sc->tx_ant; 1783 1784 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1785 } 1786 1787 data->m = m0; 1788 data->ni = ni; 1789 1790 /* XXX need to setup descriptor ourself */ 1791 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1792 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1793 segs->ds_addr); 1794 1795 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1796 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1797 BUS_DMASYNC_PREWRITE); 1798 1799 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1800 m0->m_pkthdr.len, sc->prioq.cur, rate); 1801 1802 /* kick prio */ 1803 sc->prioq.queued++; 1804 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1805 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1806 1807 return 0; 1808} 1809 1810static int 1811rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1812 struct ieee80211_node *ni) 1813{ 1814 struct ieee80211vap *vap = ni->ni_vap; 1815 struct ieee80211com *ic = ni->ni_ic; 1816 struct ifnet *ifp = sc->sc_ifp; 1817 struct rt2560_tx_desc *desc; 1818 struct rt2560_tx_data *data; 1819 struct ieee80211_frame *wh; 1820 const struct ieee80211_txparam *tp; 1821 struct ieee80211_key *k; 1822 struct mbuf *mnew; 1823 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1824 uint16_t dur; 1825 uint32_t flags; 1826 int nsegs, rate, error; 1827 1828 wh = mtod(m0, struct ieee80211_frame *); 1829 1830 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1831 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1832 rate = tp->mcastrate; 1833 } else if (m0->m_flags & M_EAPOL) { 1834 rate = tp->mgmtrate; 1835 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1836 rate = tp->ucastrate; 1837 } else { 1838 (void) ieee80211_amrr_choose(ni, &RT2560_NODE(ni)->amrr); 1839 rate = ni->ni_txrate; 1840 } 1841 1842 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1843 k = ieee80211_crypto_encap(ni, m0); 1844 if (k == NULL) { 1845 m_freem(m0); 1846 return ENOBUFS; 1847 } 1848 1849 /* packet header may have moved, reset our local pointer */ 1850 wh = mtod(m0, struct ieee80211_frame *); 1851 } 1852 1853 flags = 0; 1854 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1855 int prot = IEEE80211_PROT_NONE; 1856 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1857 prot = IEEE80211_PROT_RTSCTS; 1858 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1859 ieee80211_rate2phytype(sc->sc_rates, rate) == IEEE80211_T_OFDM) 1860 prot = ic->ic_protmode; 1861 if (prot != IEEE80211_PROT_NONE) { 1862 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1863 if (error) { 1864 m_freem(m0); 1865 return error; 1866 } 1867 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1868 } 1869 } 1870 1871 data = &sc->txq.data[sc->txq.cur_encrypt]; 1872 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1873 1874 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1875 segs, &nsegs, 0); 1876 if (error != 0 && error != EFBIG) { 1877 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1878 error); 1879 m_freem(m0); 1880 return error; 1881 } 1882 if (error != 0) { 1883 mnew = m_defrag(m0, M_DONTWAIT); 1884 if (mnew == NULL) { 1885 device_printf(sc->sc_dev, 1886 "could not defragment mbuf\n"); 1887 m_freem(m0); 1888 return ENOBUFS; 1889 } 1890 m0 = mnew; 1891 1892 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1893 m0, segs, &nsegs, 0); 1894 if (error != 0) { 1895 device_printf(sc->sc_dev, 1896 "could not map mbuf (error %d)\n", error); 1897 m_freem(m0); 1898 return error; 1899 } 1900 1901 /* packet header may have moved, reset our local pointer */ 1902 wh = mtod(m0, struct ieee80211_frame *); 1903 } 1904 1905 if (bpf_peers_present(ifp->if_bpf)) { 1906 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1907 1908 tap->wt_flags = 0; 1909 tap->wt_rate = rate; 1910 tap->wt_antenna = sc->tx_ant; 1911 1912 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1913 } 1914 1915 data->m = m0; 1916 data->ni = ni; 1917 1918 /* remember link conditions for rate adaptation algorithm */ 1919 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1920 data->rix = ni->ni_txrate; 1921 /* XXX probably need last rssi value and not avg */ 1922 data->rssi = ic->ic_node_getrssi(ni); 1923 } else 1924 data->rix = IEEE80211_FIXED_RATE_NONE; 1925 1926 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1927 flags |= RT2560_TX_ACK; 1928 1929 dur = ieee80211_ack_duration(sc->sc_rates, 1930 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1931 *(uint16_t *)wh->i_dur = htole16(dur); 1932 } 1933 1934 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1935 segs->ds_addr); 1936 1937 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1938 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1939 BUS_DMASYNC_PREWRITE); 1940 1941 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1942 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1943 1944 /* kick encrypt */ 1945 sc->txq.queued++; 1946 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1947 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1948 1949 return 0; 1950} 1951 1952static void 1953rt2560_start_locked(struct ifnet *ifp) 1954{ 1955 struct rt2560_softc *sc = ifp->if_softc; 1956 struct mbuf *m; 1957 struct ieee80211_node *ni; 1958 1959 RAL_LOCK_ASSERT(sc); 1960 1961 for (;;) { 1962 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1963 if (m == NULL) 1964 break; 1965 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1966 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1967 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1968 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1969 break; 1970 } 1971 1972 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1973 m = ieee80211_encap(ni, m); 1974 if (m == NULL) { 1975 ieee80211_free_node(ni); 1976 ifp->if_oerrors++; 1977 continue; 1978 } 1979 1980 if (rt2560_tx_data(sc, m, ni) != 0) { 1981 ieee80211_free_node(ni); 1982 ifp->if_oerrors++; 1983 break; 1984 } 1985 1986 sc->sc_tx_timer = 5; 1987 } 1988} 1989 1990static void 1991rt2560_start(struct ifnet *ifp) 1992{ 1993 struct rt2560_softc *sc = ifp->if_softc; 1994 1995 RAL_LOCK(sc); 1996 rt2560_start_locked(ifp); 1997 RAL_UNLOCK(sc); 1998} 1999 2000static void 2001rt2560_watchdog(void *arg) 2002{ 2003 struct rt2560_softc *sc = arg; 2004 struct ifnet *ifp = sc->sc_ifp; 2005 2006 RAL_LOCK_ASSERT(sc); 2007 2008 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 2009 2010 if (sc->sc_invalid) /* card ejected */ 2011 return; 2012 2013 rt2560_encryption_intr(sc); 2014 rt2560_tx_intr(sc); 2015 2016 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 2017 if_printf(ifp, "device timeout\n"); 2018 rt2560_init_locked(sc); 2019 ifp->if_oerrors++; 2020 /* NB: callout is reset in rt2560_init() */ 2021 return; 2022 } 2023 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2024} 2025 2026static int 2027rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2028{ 2029 struct rt2560_softc *sc = ifp->if_softc; 2030 struct ieee80211com *ic = ifp->if_l2com; 2031 struct ifreq *ifr = (struct ifreq *) data; 2032 int error = 0, startall = 0; 2033 2034 switch (cmd) { 2035 case SIOCSIFFLAGS: 2036 RAL_LOCK(sc); 2037 if (ifp->if_flags & IFF_UP) { 2038 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2039 rt2560_init_locked(sc); 2040 startall = 1; 2041 } else 2042 rt2560_update_promisc(ifp); 2043 } else { 2044 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2045 rt2560_stop_locked(sc); 2046 } 2047 RAL_UNLOCK(sc); 2048 if (startall) 2049 ieee80211_start_all(ic); 2050 break; 2051 case SIOCGIFMEDIA: 2052 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2053 break; 2054 case SIOCGIFADDR: 2055 error = ether_ioctl(ifp, cmd, data); 2056 break; 2057 default: 2058 error = EINVAL; 2059 break; 2060 } 2061 return error; 2062} 2063 2064static void 2065rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2066{ 2067 uint32_t tmp; 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 write to BBP\n"); 2077 return; 2078 } 2079 2080 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2081 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2082 2083 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2084} 2085 2086static uint8_t 2087rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2088{ 2089 uint32_t val; 2090 int ntries; 2091 2092 for (ntries = 0; ntries < 100; ntries++) { 2093 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2094 break; 2095 DELAY(1); 2096 } 2097 if (ntries == 100) { 2098 device_printf(sc->sc_dev, "could not read from BBP\n"); 2099 return 0; 2100 } 2101 2102 val = RT2560_BBP_BUSY | reg << 8; 2103 RAL_WRITE(sc, RT2560_BBPCSR, val); 2104 2105 for (ntries = 0; ntries < 100; ntries++) { 2106 val = RAL_READ(sc, RT2560_BBPCSR); 2107 if (!(val & RT2560_BBP_BUSY)) 2108 return val & 0xff; 2109 DELAY(1); 2110 } 2111 2112 device_printf(sc->sc_dev, "could not read from BBP\n"); 2113 return 0; 2114} 2115 2116static void 2117rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2118{ 2119 uint32_t tmp; 2120 int ntries; 2121 2122 for (ntries = 0; ntries < 100; ntries++) { 2123 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2124 break; 2125 DELAY(1); 2126 } 2127 if (ntries == 100) { 2128 device_printf(sc->sc_dev, "could not write to RF\n"); 2129 return; 2130 } 2131 2132 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2133 (reg & 0x3); 2134 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2135 2136 /* remember last written value in sc */ 2137 sc->rf_regs[reg] = val; 2138 2139 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2140} 2141 2142static void 2143rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2144{ 2145 struct ifnet *ifp = sc->sc_ifp; 2146 struct ieee80211com *ic = ifp->if_l2com; 2147 uint8_t power, tmp; 2148 u_int i, chan; 2149 2150 chan = ieee80211_chan2ieee(ic, c); 2151 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2152 2153 sc->sc_rates = ieee80211_get_ratetable(c); 2154 2155 if (IEEE80211_IS_CHAN_2GHZ(c)) 2156 power = min(sc->txpow[chan - 1], 31); 2157 else 2158 power = 31; 2159 2160 /* adjust txpower using ifconfig settings */ 2161 power -= (100 - ic->ic_txpowlimit) / 8; 2162 2163 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2164 2165 switch (sc->rf_rev) { 2166 case RT2560_RF_2522: 2167 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2168 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2169 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2170 break; 2171 2172 case RT2560_RF_2523: 2173 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2174 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2175 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2176 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2177 break; 2178 2179 case RT2560_RF_2524: 2180 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2181 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2182 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2183 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2184 break; 2185 2186 case RT2560_RF_2525: 2187 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2188 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2189 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2190 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2191 2192 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2193 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2194 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2195 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2196 break; 2197 2198 case RT2560_RF_2525E: 2199 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2200 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2201 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2202 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2203 break; 2204 2205 case RT2560_RF_2526: 2206 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2207 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2208 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2209 2210 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2211 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2212 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2213 break; 2214 2215 /* dual-band RF */ 2216 case RT2560_RF_5222: 2217 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2218 2219 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2220 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2221 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2222 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2223 break; 2224 default: 2225 printf("unknown ral rev=%d\n", sc->rf_rev); 2226 } 2227 2228 /* XXX */ 2229 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2230 /* set Japan filter bit for channel 14 */ 2231 tmp = rt2560_bbp_read(sc, 70); 2232 2233 tmp &= ~RT2560_JAPAN_FILTER; 2234 if (chan == 14) 2235 tmp |= RT2560_JAPAN_FILTER; 2236 2237 rt2560_bbp_write(sc, 70, tmp); 2238 2239 /* clear CRC errors */ 2240 RAL_READ(sc, RT2560_CNT0); 2241 } 2242} 2243 2244static void 2245rt2560_set_channel(struct ieee80211com *ic) 2246{ 2247 struct ifnet *ifp = ic->ic_ifp; 2248 struct rt2560_softc *sc = ifp->if_softc; 2249 2250 RAL_LOCK(sc); 2251 rt2560_set_chan(sc, ic->ic_curchan); 2252 2253 sc->sc_txtap.wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 2254 sc->sc_txtap.wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 2255 sc->sc_rxtap.wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 2256 sc->sc_rxtap.wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 2257 RAL_UNLOCK(sc); 2258 2259} 2260 2261#if 0 2262/* 2263 * Disable RF auto-tuning. 2264 */ 2265static void 2266rt2560_disable_rf_tune(struct rt2560_softc *sc) 2267{ 2268 uint32_t tmp; 2269 2270 if (sc->rf_rev != RT2560_RF_2523) { 2271 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2272 rt2560_rf_write(sc, RAL_RF1, tmp); 2273 } 2274 2275 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2276 rt2560_rf_write(sc, RAL_RF3, tmp); 2277 2278 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2279} 2280#endif 2281 2282/* 2283 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2284 * synchronization. 2285 */ 2286static void 2287rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2288{ 2289 struct ifnet *ifp = sc->sc_ifp; 2290 struct ieee80211com *ic = ifp->if_l2com; 2291 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2292 uint16_t logcwmin, preload; 2293 uint32_t tmp; 2294 2295 /* first, disable TSF synchronization */ 2296 RAL_WRITE(sc, RT2560_CSR14, 0); 2297 2298 tmp = 16 * vap->iv_bss->ni_intval; 2299 RAL_WRITE(sc, RT2560_CSR12, tmp); 2300 2301 RAL_WRITE(sc, RT2560_CSR13, 0); 2302 2303 logcwmin = 5; 2304 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2305 tmp = logcwmin << 16 | preload; 2306 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2307 2308 /* finally, enable TSF synchronization */ 2309 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2310 if (ic->ic_opmode == IEEE80211_M_STA) 2311 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2312 else 2313 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2314 RT2560_ENABLE_BEACON_GENERATOR; 2315 RAL_WRITE(sc, RT2560_CSR14, tmp); 2316 2317 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2318} 2319 2320static void 2321rt2560_update_plcp(struct rt2560_softc *sc) 2322{ 2323 struct ifnet *ifp = sc->sc_ifp; 2324 struct ieee80211com *ic = ifp->if_l2com; 2325 2326 /* no short preamble for 1Mbps */ 2327 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2328 2329 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2330 /* values taken from the reference driver */ 2331 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2332 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2333 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2334 } else { 2335 /* same values as above or'ed 0x8 */ 2336 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2337 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2338 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2339 } 2340 2341 DPRINTF(sc, "updating PLCP for %s preamble\n", 2342 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2343} 2344 2345/* 2346 * This function can be called by ieee80211_set_shortslottime(). Refer to 2347 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2348 */ 2349static void 2350rt2560_update_slot(struct ifnet *ifp) 2351{ 2352 struct rt2560_softc *sc = ifp->if_softc; 2353 struct ieee80211com *ic = ifp->if_l2com; 2354 uint8_t slottime; 2355 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2356 uint32_t tmp; 2357 2358#ifndef FORCE_SLOTTIME 2359 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2360#else 2361 /* 2362 * Setting slot time according to "short slot time" capability 2363 * in beacon/probe_resp seems to cause problem to acknowledge 2364 * certain AP's data frames transimitted at CCK/DS rates: the 2365 * problematic AP keeps retransmitting data frames, probably 2366 * because MAC level acks are not received by hardware. 2367 * So we cheat a little bit here by claiming we are capable of 2368 * "short slot time" but setting hardware slot time to the normal 2369 * slot time. ral(4) does not seem to have trouble to receive 2370 * frames transmitted using short slot time even if hardware 2371 * slot time is set to normal slot time. If we didn't use this 2372 * trick, we would have to claim that short slot time is not 2373 * supported; this would give relative poor RX performance 2374 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2375 * slot time. 2376 */ 2377 slottime = 20; 2378#endif 2379 2380 /* update the MAC slot boundaries */ 2381 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2382 tx_pifs = tx_sifs + slottime; 2383 tx_difs = tx_sifs + 2 * slottime; 2384 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2385 2386 tmp = RAL_READ(sc, RT2560_CSR11); 2387 tmp = (tmp & ~0x1f00) | slottime << 8; 2388 RAL_WRITE(sc, RT2560_CSR11, tmp); 2389 2390 tmp = tx_pifs << 16 | tx_sifs; 2391 RAL_WRITE(sc, RT2560_CSR18, tmp); 2392 2393 tmp = eifs << 16 | tx_difs; 2394 RAL_WRITE(sc, RT2560_CSR19, tmp); 2395 2396 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2397} 2398 2399static void 2400rt2560_set_basicrates(struct rt2560_softc *sc) 2401{ 2402 struct ifnet *ifp = sc->sc_ifp; 2403 struct ieee80211com *ic = ifp->if_l2com; 2404 2405 /* update basic rate set */ 2406 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2407 /* 11b basic rates: 1, 2Mbps */ 2408 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2409 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2410 /* 11a basic rates: 6, 12, 24Mbps */ 2411 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2412 } else { 2413 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2414 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2415 } 2416} 2417 2418static void 2419rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2420{ 2421 uint32_t tmp; 2422 2423 /* set ON period to 70ms and OFF period to 30ms */ 2424 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2425 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2426} 2427 2428static void 2429rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2430{ 2431 uint32_t tmp; 2432 2433 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2434 RAL_WRITE(sc, RT2560_CSR5, tmp); 2435 2436 tmp = bssid[4] | bssid[5] << 8; 2437 RAL_WRITE(sc, RT2560_CSR6, tmp); 2438 2439 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2440} 2441 2442static void 2443rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2444{ 2445 uint32_t tmp; 2446 2447 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2448 RAL_WRITE(sc, RT2560_CSR3, tmp); 2449 2450 tmp = addr[4] | addr[5] << 8; 2451 RAL_WRITE(sc, RT2560_CSR4, tmp); 2452 2453 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2454} 2455 2456static void 2457rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2458{ 2459 uint32_t tmp; 2460 2461 tmp = RAL_READ(sc, RT2560_CSR3); 2462 addr[0] = tmp & 0xff; 2463 addr[1] = (tmp >> 8) & 0xff; 2464 addr[2] = (tmp >> 16) & 0xff; 2465 addr[3] = (tmp >> 24); 2466 2467 tmp = RAL_READ(sc, RT2560_CSR4); 2468 addr[4] = tmp & 0xff; 2469 addr[5] = (tmp >> 8) & 0xff; 2470} 2471 2472static void 2473rt2560_update_promisc(struct ifnet *ifp) 2474{ 2475 struct rt2560_softc *sc = ifp->if_softc; 2476 uint32_t tmp; 2477 2478 tmp = RAL_READ(sc, RT2560_RXCSR0); 2479 2480 tmp &= ~RT2560_DROP_NOT_TO_ME; 2481 if (!(ifp->if_flags & IFF_PROMISC)) 2482 tmp |= RT2560_DROP_NOT_TO_ME; 2483 2484 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2485 2486 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2487 "entering" : "leaving"); 2488} 2489 2490static const char * 2491rt2560_get_rf(int rev) 2492{ 2493 switch (rev) { 2494 case RT2560_RF_2522: return "RT2522"; 2495 case RT2560_RF_2523: return "RT2523"; 2496 case RT2560_RF_2524: return "RT2524"; 2497 case RT2560_RF_2525: return "RT2525"; 2498 case RT2560_RF_2525E: return "RT2525e"; 2499 case RT2560_RF_2526: return "RT2526"; 2500 case RT2560_RF_5222: return "RT5222"; 2501 default: return "unknown"; 2502 } 2503} 2504 2505static void 2506rt2560_read_config(struct rt2560_softc *sc) 2507{ 2508 uint16_t val; 2509 int i; 2510 2511 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2512 sc->rf_rev = (val >> 11) & 0x7; 2513 sc->hw_radio = (val >> 10) & 0x1; 2514 sc->led_mode = (val >> 6) & 0x7; 2515 sc->rx_ant = (val >> 4) & 0x3; 2516 sc->tx_ant = (val >> 2) & 0x3; 2517 sc->nb_ant = val & 0x3; 2518 2519 /* read default values for BBP registers */ 2520 for (i = 0; i < 16; i++) { 2521 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2522 if (val == 0 || val == 0xffff) 2523 continue; 2524 2525 sc->bbp_prom[i].reg = val >> 8; 2526 sc->bbp_prom[i].val = val & 0xff; 2527 } 2528 2529 /* read Tx power for all b/g channels */ 2530 for (i = 0; i < 14 / 2; i++) { 2531 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2532 sc->txpow[i * 2] = val & 0xff; 2533 sc->txpow[i * 2 + 1] = val >> 8; 2534 } 2535 for (i = 0; i < 14; ++i) { 2536 if (sc->txpow[i] > 31) 2537 sc->txpow[i] = 24; 2538 } 2539 2540 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2541 if ((val & 0xff) == 0xff) 2542 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2543 else 2544 sc->rssi_corr = val & 0xff; 2545 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2546 sc->rssi_corr, val); 2547} 2548 2549 2550static void 2551rt2560_scan_start(struct ieee80211com *ic) 2552{ 2553 struct ifnet *ifp = ic->ic_ifp; 2554 struct rt2560_softc *sc = ifp->if_softc; 2555 2556 /* abort TSF synchronization */ 2557 RAL_WRITE(sc, RT2560_CSR14, 0); 2558 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2559} 2560 2561static void 2562rt2560_scan_end(struct ieee80211com *ic) 2563{ 2564 struct ifnet *ifp = ic->ic_ifp; 2565 struct rt2560_softc *sc = ifp->if_softc; 2566 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2567 2568 rt2560_enable_tsf_sync(sc); 2569 /* XXX keep local copy */ 2570 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2571} 2572 2573static int 2574rt2560_bbp_init(struct rt2560_softc *sc) 2575{ 2576#define N(a) (sizeof (a) / sizeof ((a)[0])) 2577 int i, ntries; 2578 2579 /* wait for BBP to be ready */ 2580 for (ntries = 0; ntries < 100; ntries++) { 2581 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2582 break; 2583 DELAY(1); 2584 } 2585 if (ntries == 100) { 2586 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2587 return EIO; 2588 } 2589 2590 /* initialize BBP registers to default values */ 2591 for (i = 0; i < N(rt2560_def_bbp); i++) { 2592 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2593 rt2560_def_bbp[i].val); 2594 } 2595 2596 /* initialize BBP registers to values stored in EEPROM */ 2597 for (i = 0; i < 16; i++) { 2598 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2599 break; 2600 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2601 } 2602 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2603 2604 return 0; 2605#undef N 2606} 2607 2608static void 2609rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2610{ 2611 uint32_t tmp; 2612 uint8_t tx; 2613 2614 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2615 if (antenna == 1) 2616 tx |= RT2560_BBP_ANTA; 2617 else if (antenna == 2) 2618 tx |= RT2560_BBP_ANTB; 2619 else 2620 tx |= RT2560_BBP_DIVERSITY; 2621 2622 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2623 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2624 sc->rf_rev == RT2560_RF_5222) 2625 tx |= RT2560_BBP_FLIPIQ; 2626 2627 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2628 2629 /* update values for CCK and OFDM in BBPCSR1 */ 2630 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2631 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2632 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2633} 2634 2635static void 2636rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2637{ 2638 uint8_t rx; 2639 2640 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2641 if (antenna == 1) 2642 rx |= RT2560_BBP_ANTA; 2643 else if (antenna == 2) 2644 rx |= RT2560_BBP_ANTB; 2645 else 2646 rx |= RT2560_BBP_DIVERSITY; 2647 2648 /* need to force no I/Q flip for RF 2525e and 2526 */ 2649 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2650 rx &= ~RT2560_BBP_FLIPIQ; 2651 2652 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2653} 2654 2655static void 2656rt2560_init_locked(struct rt2560_softc *sc) 2657{ 2658#define N(a) (sizeof (a) / sizeof ((a)[0])) 2659 struct ifnet *ifp = sc->sc_ifp; 2660 struct ieee80211com *ic = ifp->if_l2com; 2661 uint32_t tmp; 2662 int i; 2663 2664 RAL_LOCK_ASSERT(sc); 2665 2666 rt2560_stop_locked(sc); 2667 2668 /* setup tx rings */ 2669 tmp = RT2560_PRIO_RING_COUNT << 24 | 2670 RT2560_ATIM_RING_COUNT << 16 | 2671 RT2560_TX_RING_COUNT << 8 | 2672 RT2560_TX_DESC_SIZE; 2673 2674 /* rings must be initialized in this exact order */ 2675 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2676 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2677 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2678 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2679 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2680 2681 /* setup rx ring */ 2682 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2683 2684 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2685 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2686 2687 /* initialize MAC registers to default values */ 2688 for (i = 0; i < N(rt2560_def_mac); i++) 2689 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2690 2691 IEEE80211_ADDR_COPY(ic->ic_myaddr, IF_LLADDR(ifp)); 2692 rt2560_set_macaddr(sc, ic->ic_myaddr); 2693 2694 /* set basic rate set (will be updated later) */ 2695 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2696 2697 rt2560_update_slot(ifp); 2698 rt2560_update_plcp(sc); 2699 rt2560_update_led(sc, 0, 0); 2700 2701 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2702 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2703 2704 if (rt2560_bbp_init(sc) != 0) { 2705 rt2560_stop(sc); 2706 RAL_UNLOCK(sc); 2707 return; 2708 } 2709 2710 rt2560_set_txantenna(sc, sc->tx_ant); 2711 rt2560_set_rxantenna(sc, sc->rx_ant); 2712 2713 /* set default BSS channel */ 2714 rt2560_set_chan(sc, ic->ic_curchan); 2715 2716 /* kick Rx */ 2717 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2718 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2719 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2720 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2721 tmp |= RT2560_DROP_TODS; 2722 if (!(ifp->if_flags & IFF_PROMISC)) 2723 tmp |= RT2560_DROP_NOT_TO_ME; 2724 } 2725 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2726 2727 /* clear old FCS and Rx FIFO errors */ 2728 RAL_READ(sc, RT2560_CNT0); 2729 RAL_READ(sc, RT2560_CNT4); 2730 2731 /* clear any pending interrupts */ 2732 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2733 2734 /* enable interrupts */ 2735 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2736 2737 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2738 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2739 2740 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2741#undef N 2742} 2743 2744static void 2745rt2560_init(void *priv) 2746{ 2747 struct rt2560_softc *sc = priv; 2748 struct ifnet *ifp = sc->sc_ifp; 2749 struct ieee80211com *ic = ifp->if_l2com; 2750 2751 RAL_LOCK(sc); 2752 rt2560_init_locked(sc); 2753 RAL_UNLOCK(sc); 2754 2755 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2756 ieee80211_start_all(ic); /* start all vap's */ 2757} 2758 2759static void 2760rt2560_stop_locked(struct rt2560_softc *sc) 2761{ 2762 struct ifnet *ifp = sc->sc_ifp; 2763 volatile int *flags = &sc->sc_flags; 2764 2765 RAL_LOCK_ASSERT(sc); 2766 2767 while (*flags & RT2560_F_INPUT_RUNNING) 2768 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2769 2770 callout_stop(&sc->watchdog_ch); 2771 sc->sc_tx_timer = 0; 2772 2773 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2774 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2775 2776 /* abort Tx */ 2777 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2778 2779 /* disable Rx */ 2780 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2781 2782 /* reset ASIC (imply reset BBP) */ 2783 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2784 RAL_WRITE(sc, RT2560_CSR1, 0); 2785 2786 /* disable interrupts */ 2787 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2788 2789 /* reset Tx and Rx rings */ 2790 rt2560_reset_tx_ring(sc, &sc->txq); 2791 rt2560_reset_tx_ring(sc, &sc->atimq); 2792 rt2560_reset_tx_ring(sc, &sc->prioq); 2793 rt2560_reset_tx_ring(sc, &sc->bcnq); 2794 rt2560_reset_rx_ring(sc, &sc->rxq); 2795 } 2796 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2797} 2798 2799void 2800rt2560_stop(void *arg) 2801{ 2802 struct rt2560_softc *sc = arg; 2803 2804 RAL_LOCK(sc); 2805 rt2560_stop_locked(sc); 2806 RAL_UNLOCK(sc); 2807} 2808 2809static int 2810rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2811 const struct ieee80211_bpf_params *params) 2812{ 2813 struct ieee80211com *ic = ni->ni_ic; 2814 struct ifnet *ifp = ic->ic_ifp; 2815 struct rt2560_softc *sc = ifp->if_softc; 2816 2817 RAL_LOCK(sc); 2818 2819 /* prevent management frames from being sent if we're not ready */ 2820 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2821 RAL_UNLOCK(sc); 2822 m_freem(m); 2823 ieee80211_free_node(ni); 2824 return ENETDOWN; 2825 } 2826 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2827 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2828 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2829 RAL_UNLOCK(sc); 2830 m_freem(m); 2831 ieee80211_free_node(ni); 2832 return ENOBUFS; /* XXX */ 2833 } 2834 2835 ifp->if_opackets++; 2836 2837 if (params == NULL) { 2838 /* 2839 * Legacy path; interpret frame contents to decide 2840 * precisely how to send the frame. 2841 */ 2842 if (rt2560_tx_mgt(sc, m, ni) != 0) 2843 goto bad; 2844 } else { 2845 /* 2846 * Caller supplied explicit parameters to use in 2847 * sending the frame. 2848 */ 2849 if (rt2560_tx_raw(sc, m, ni, params)) 2850 goto bad; 2851 } 2852 sc->sc_tx_timer = 5; 2853 2854 RAL_UNLOCK(sc); 2855 2856 return 0; 2857bad: 2858 ifp->if_oerrors++; 2859 ieee80211_free_node(ni); 2860 RAL_UNLOCK(sc); 2861 return EIO; /* XXX */ 2862} 2863