1/* $FreeBSD: stable/11/sys/dev/ral/rt2560.c 343976 2019-02-10 21:00:02Z avos $ */ 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: stable/11/sys/dev/ral/rt2560.c 343976 2019-02-10 21:00:02Z avos $"); 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_var.h> 49#include <net/if_arp.h> 50#include <net/ethernet.h> 51#include <net/if_dl.h> 52#include <net/if_media.h> 53#include <net/if_types.h> 54 55#include <net80211/ieee80211_var.h> 56#include <net80211/ieee80211_radiotap.h> 57#include <net80211/ieee80211_regdomain.h> 58#include <net80211/ieee80211_ratectl.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 [IFNAMSIZ], int, enum ieee80211_opmode, 90 int, const uint8_t [IEEE80211_ADDR_LEN], 91 const uint8_t [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 int rt2560_newstate(struct ieee80211vap *, 108 enum ieee80211_state, int); 109static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 110static void rt2560_encryption_intr(struct rt2560_softc *); 111static void rt2560_tx_intr(struct rt2560_softc *); 112static void rt2560_prio_intr(struct rt2560_softc *); 113static void rt2560_decryption_intr(struct rt2560_softc *); 114static void rt2560_rx_intr(struct rt2560_softc *); 115static void rt2560_beacon_update(struct ieee80211vap *, int item); 116static void rt2560_beacon_expire(struct rt2560_softc *); 117static void rt2560_wakeup_expire(struct rt2560_softc *); 118static void rt2560_scan_start(struct ieee80211com *); 119static void rt2560_scan_end(struct ieee80211com *); 120static void rt2560_getradiocaps(struct ieee80211com *, int, int *, 121 struct ieee80211_channel[]); 122static void rt2560_set_channel(struct ieee80211com *); 123static void rt2560_setup_tx_desc(struct rt2560_softc *, 124 struct rt2560_tx_desc *, uint32_t, int, int, int, 125 bus_addr_t); 126static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 129 struct ieee80211_node *); 130static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 131 struct ieee80211_node *); 132static int rt2560_transmit(struct ieee80211com *, struct mbuf *); 133static void rt2560_start(struct rt2560_softc *); 134static void rt2560_watchdog(void *); 135static void rt2560_parent(struct ieee80211com *); 136static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 137 uint8_t); 138static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 139static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 140 uint32_t); 141static void rt2560_set_chan(struct rt2560_softc *, 142 struct ieee80211_channel *); 143#if 0 144static void rt2560_disable_rf_tune(struct rt2560_softc *); 145#endif 146static void rt2560_enable_tsf_sync(struct rt2560_softc *); 147static void rt2560_enable_tsf(struct rt2560_softc *); 148static void rt2560_update_plcp(struct rt2560_softc *); 149static void rt2560_update_slot(struct ieee80211com *); 150static void rt2560_set_basicrates(struct rt2560_softc *, 151 const struct ieee80211_rateset *); 152static void rt2560_update_led(struct rt2560_softc *, int, int); 153static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 154static void rt2560_set_macaddr(struct rt2560_softc *, 155 const uint8_t *); 156static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 157static void rt2560_update_promisc(struct ieee80211com *); 158static const char *rt2560_get_rf(int); 159static void rt2560_read_config(struct rt2560_softc *); 160static int rt2560_bbp_init(struct rt2560_softc *); 161static void rt2560_set_txantenna(struct rt2560_softc *, int); 162static void rt2560_set_rxantenna(struct rt2560_softc *, int); 163static void rt2560_init_locked(struct rt2560_softc *); 164static void rt2560_init(void *); 165static void rt2560_stop_locked(struct rt2560_softc *); 166static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 167 const struct ieee80211_bpf_params *); 168 169static const struct { 170 uint32_t reg; 171 uint32_t val; 172} rt2560_def_mac[] = { 173 RT2560_DEF_MAC 174}; 175 176static const struct { 177 uint8_t reg; 178 uint8_t val; 179} rt2560_def_bbp[] = { 180 RT2560_DEF_BBP 181}; 182 183static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 184static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 185static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 186static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 187static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 188static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 189static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 190static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 191 192static const uint8_t rt2560_chan_5ghz[] = 193 { 36, 40, 44, 48, 52, 56, 60, 64, 194 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 195 149, 153, 157, 161 }; 196 197static const struct { 198 uint8_t chan; 199 uint32_t r1, r2, r4; 200} rt2560_rf5222[] = { 201 RT2560_RF5222 202}; 203 204int 205rt2560_attach(device_t dev, int id) 206{ 207 struct rt2560_softc *sc = device_get_softc(dev); 208 struct ieee80211com *ic = &sc->sc_ic; 209 int error; 210 211 sc->sc_dev = dev; 212 213 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 214 MTX_DEF | MTX_RECURSE); 215 216 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 217 mbufq_init(&sc->sc_snd, ifqmaxlen); 218 219 /* retrieve RT2560 rev. no */ 220 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 221 222 /* retrieve RF rev. no and various other things from EEPROM */ 223 rt2560_read_config(sc); 224 225 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 226 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 227 228 /* 229 * Allocate Tx and Rx rings. 230 */ 231 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 232 if (error != 0) { 233 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 234 goto fail1; 235 } 236 237 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 238 if (error != 0) { 239 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 240 goto fail2; 241 } 242 243 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 244 if (error != 0) { 245 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 246 goto fail3; 247 } 248 249 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 250 if (error != 0) { 251 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 252 goto fail4; 253 } 254 255 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 256 if (error != 0) { 257 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 258 goto fail5; 259 } 260 261 /* retrieve MAC address */ 262 rt2560_get_macaddr(sc, ic->ic_macaddr); 263 264 ic->ic_softc = sc; 265 ic->ic_name = device_get_nameunit(dev); 266 ic->ic_opmode = IEEE80211_M_STA; 267 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 268 269 /* set device capabilities */ 270 ic->ic_caps = 271 IEEE80211_C_STA /* station mode */ 272 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 273 | IEEE80211_C_HOSTAP /* hostap mode */ 274 | IEEE80211_C_MONITOR /* monitor mode */ 275 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 276 | IEEE80211_C_WDS /* 4-address traffic works */ 277 | IEEE80211_C_MBSS /* mesh point link mode */ 278 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 279 | IEEE80211_C_SHSLOT /* short slot time supported */ 280 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 281 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 282#ifdef notyet 283 | IEEE80211_C_TXFRAG /* handle tx frags */ 284#endif 285 ; 286 287 rt2560_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 288 ic->ic_channels); 289 290 ieee80211_ifattach(ic); 291 ic->ic_raw_xmit = rt2560_raw_xmit; 292 ic->ic_updateslot = rt2560_update_slot; 293 ic->ic_update_promisc = rt2560_update_promisc; 294 ic->ic_scan_start = rt2560_scan_start; 295 ic->ic_scan_end = rt2560_scan_end; 296 ic->ic_getradiocaps = rt2560_getradiocaps; 297 ic->ic_set_channel = rt2560_set_channel; 298 299 ic->ic_vap_create = rt2560_vap_create; 300 ic->ic_vap_delete = rt2560_vap_delete; 301 ic->ic_parent = rt2560_parent; 302 ic->ic_transmit = rt2560_transmit; 303 304 ieee80211_radiotap_attach(ic, 305 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 306 RT2560_TX_RADIOTAP_PRESENT, 307 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 308 RT2560_RX_RADIOTAP_PRESENT); 309 310 /* 311 * Add a few sysctl knobs. 312 */ 313#ifdef RAL_DEBUG 314 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 315 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 316 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 317#endif 318 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 319 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 320 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 321 322 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 323 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 324 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 325 326 if (bootverbose) 327 ieee80211_announce(ic); 328 329 return 0; 330 331fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 332fail4: rt2560_free_tx_ring(sc, &sc->prioq); 333fail3: rt2560_free_tx_ring(sc, &sc->atimq); 334fail2: rt2560_free_tx_ring(sc, &sc->txq); 335fail1: mtx_destroy(&sc->sc_mtx); 336 337 return ENXIO; 338} 339 340int 341rt2560_detach(void *xsc) 342{ 343 struct rt2560_softc *sc = xsc; 344 struct ieee80211com *ic = &sc->sc_ic; 345 346 rt2560_stop(sc); 347 348 ieee80211_ifdetach(ic); 349 mbufq_drain(&sc->sc_snd); 350 351 rt2560_free_tx_ring(sc, &sc->txq); 352 rt2560_free_tx_ring(sc, &sc->atimq); 353 rt2560_free_tx_ring(sc, &sc->prioq); 354 rt2560_free_tx_ring(sc, &sc->bcnq); 355 rt2560_free_rx_ring(sc, &sc->rxq); 356 357 mtx_destroy(&sc->sc_mtx); 358 359 return 0; 360} 361 362static struct ieee80211vap * 363rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 364 enum ieee80211_opmode opmode, int flags, 365 const uint8_t bssid[IEEE80211_ADDR_LEN], 366 const uint8_t mac[IEEE80211_ADDR_LEN]) 367{ 368 struct rt2560_softc *sc = ic->ic_softc; 369 struct rt2560_vap *rvp; 370 struct ieee80211vap *vap; 371 372 switch (opmode) { 373 case IEEE80211_M_STA: 374 case IEEE80211_M_IBSS: 375 case IEEE80211_M_AHDEMO: 376 case IEEE80211_M_MONITOR: 377 case IEEE80211_M_HOSTAP: 378 case IEEE80211_M_MBSS: 379 /* XXXRP: TBD */ 380 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 381 device_printf(sc->sc_dev, "only 1 vap supported\n"); 382 return NULL; 383 } 384 if (opmode == IEEE80211_M_STA) 385 flags |= IEEE80211_CLONE_NOBEACONS; 386 break; 387 case IEEE80211_M_WDS: 388 if (TAILQ_EMPTY(&ic->ic_vaps) || 389 ic->ic_opmode != IEEE80211_M_HOSTAP) { 390 device_printf(sc->sc_dev, 391 "wds only supported in ap mode\n"); 392 return NULL; 393 } 394 /* 395 * Silently remove any request for a unique 396 * bssid; WDS vap's always share the local 397 * mac address. 398 */ 399 flags &= ~IEEE80211_CLONE_BSSID; 400 break; 401 default: 402 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 403 return NULL; 404 } 405 rvp = malloc(sizeof(struct rt2560_vap), M_80211_VAP, M_WAITOK | M_ZERO); 406 vap = &rvp->ral_vap; 407 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 408 409 /* override state transition machine */ 410 rvp->ral_newstate = vap->iv_newstate; 411 vap->iv_newstate = rt2560_newstate; 412 vap->iv_update_beacon = rt2560_beacon_update; 413 414 ieee80211_ratectl_init(vap); 415 /* complete setup */ 416 ieee80211_vap_attach(vap, ieee80211_media_change, 417 ieee80211_media_status, mac); 418 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 419 ic->ic_opmode = opmode; 420 return vap; 421} 422 423static void 424rt2560_vap_delete(struct ieee80211vap *vap) 425{ 426 struct rt2560_vap *rvp = RT2560_VAP(vap); 427 428 ieee80211_ratectl_deinit(vap); 429 ieee80211_vap_detach(vap); 430 free(rvp, M_80211_VAP); 431} 432 433void 434rt2560_resume(void *xsc) 435{ 436 struct rt2560_softc *sc = xsc; 437 438 if (sc->sc_ic.ic_nrunning > 0) 439 rt2560_init(sc); 440} 441 442static void 443rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 444{ 445 if (error != 0) 446 return; 447 448 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 449 450 *(bus_addr_t *)arg = segs[0].ds_addr; 451} 452 453static int 454rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 455 int count) 456{ 457 int i, error; 458 459 ring->count = count; 460 ring->queued = 0; 461 ring->cur = ring->next = 0; 462 ring->cur_encrypt = ring->next_encrypt = 0; 463 464 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 465 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 466 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 467 0, NULL, NULL, &ring->desc_dmat); 468 if (error != 0) { 469 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 470 goto fail; 471 } 472 473 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 474 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 475 if (error != 0) { 476 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 477 goto fail; 478 } 479 480 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 481 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 482 0); 483 if (error != 0) { 484 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 485 goto fail; 486 } 487 488 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 489 M_NOWAIT | M_ZERO); 490 if (ring->data == NULL) { 491 device_printf(sc->sc_dev, "could not allocate soft data\n"); 492 error = ENOMEM; 493 goto fail; 494 } 495 496 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 497 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 498 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 499 &ring->data_dmat); 500 if (error != 0) { 501 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 502 goto fail; 503 } 504 505 for (i = 0; i < count; i++) { 506 error = bus_dmamap_create(ring->data_dmat, 0, 507 &ring->data[i].map); 508 if (error != 0) { 509 device_printf(sc->sc_dev, "could not create DMA map\n"); 510 goto fail; 511 } 512 } 513 514 return 0; 515 516fail: rt2560_free_tx_ring(sc, ring); 517 return error; 518} 519 520static void 521rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 522{ 523 struct rt2560_tx_desc *desc; 524 struct rt2560_tx_data *data; 525 int i; 526 527 for (i = 0; i < ring->count; i++) { 528 desc = &ring->desc[i]; 529 data = &ring->data[i]; 530 531 if (data->m != NULL) { 532 bus_dmamap_sync(ring->data_dmat, data->map, 533 BUS_DMASYNC_POSTWRITE); 534 bus_dmamap_unload(ring->data_dmat, data->map); 535 m_freem(data->m); 536 data->m = NULL; 537 } 538 539 if (data->ni != NULL) { 540 ieee80211_free_node(data->ni); 541 data->ni = NULL; 542 } 543 544 desc->flags = 0; 545 } 546 547 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 548 549 ring->queued = 0; 550 ring->cur = ring->next = 0; 551 ring->cur_encrypt = ring->next_encrypt = 0; 552} 553 554static void 555rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 556{ 557 struct rt2560_tx_data *data; 558 int i; 559 560 if (ring->desc != NULL) { 561 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 562 BUS_DMASYNC_POSTWRITE); 563 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 564 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 565 } 566 567 if (ring->desc_dmat != NULL) 568 bus_dma_tag_destroy(ring->desc_dmat); 569 570 if (ring->data != NULL) { 571 for (i = 0; i < ring->count; i++) { 572 data = &ring->data[i]; 573 574 if (data->m != NULL) { 575 bus_dmamap_sync(ring->data_dmat, data->map, 576 BUS_DMASYNC_POSTWRITE); 577 bus_dmamap_unload(ring->data_dmat, data->map); 578 m_freem(data->m); 579 } 580 581 if (data->ni != NULL) 582 ieee80211_free_node(data->ni); 583 584 if (data->map != NULL) 585 bus_dmamap_destroy(ring->data_dmat, data->map); 586 } 587 588 free(ring->data, M_DEVBUF); 589 } 590 591 if (ring->data_dmat != NULL) 592 bus_dma_tag_destroy(ring->data_dmat); 593} 594 595static int 596rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 597 int count) 598{ 599 struct rt2560_rx_desc *desc; 600 struct rt2560_rx_data *data; 601 bus_addr_t physaddr; 602 int i, error; 603 604 ring->count = count; 605 ring->cur = ring->next = 0; 606 ring->cur_decrypt = 0; 607 608 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 609 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 610 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 611 0, NULL, NULL, &ring->desc_dmat); 612 if (error != 0) { 613 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 614 goto fail; 615 } 616 617 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 618 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 619 if (error != 0) { 620 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 621 goto fail; 622 } 623 624 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 625 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 626 0); 627 if (error != 0) { 628 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 629 goto fail; 630 } 631 632 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 633 M_NOWAIT | M_ZERO); 634 if (ring->data == NULL) { 635 device_printf(sc->sc_dev, "could not allocate soft data\n"); 636 error = ENOMEM; 637 goto fail; 638 } 639 640 /* 641 * Pre-allocate Rx buffers and populate Rx ring. 642 */ 643 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 644 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 645 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 646 if (error != 0) { 647 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 648 goto fail; 649 } 650 651 for (i = 0; i < count; i++) { 652 desc = &sc->rxq.desc[i]; 653 data = &sc->rxq.data[i]; 654 655 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 656 if (error != 0) { 657 device_printf(sc->sc_dev, "could not create DMA map\n"); 658 goto fail; 659 } 660 661 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 662 if (data->m == NULL) { 663 device_printf(sc->sc_dev, 664 "could not allocate rx mbuf\n"); 665 error = ENOMEM; 666 goto fail; 667 } 668 669 error = bus_dmamap_load(ring->data_dmat, data->map, 670 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 671 &physaddr, 0); 672 if (error != 0) { 673 device_printf(sc->sc_dev, 674 "could not load rx buf DMA map"); 675 goto fail; 676 } 677 678 desc->flags = htole32(RT2560_RX_BUSY); 679 desc->physaddr = htole32(physaddr); 680 } 681 682 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 683 684 return 0; 685 686fail: rt2560_free_rx_ring(sc, ring); 687 return error; 688} 689 690static void 691rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 692{ 693 int i; 694 695 for (i = 0; i < ring->count; i++) { 696 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 697 ring->data[i].drop = 0; 698 } 699 700 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 701 702 ring->cur = ring->next = 0; 703 ring->cur_decrypt = 0; 704} 705 706static void 707rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 708{ 709 struct rt2560_rx_data *data; 710 int i; 711 712 if (ring->desc != NULL) { 713 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 714 BUS_DMASYNC_POSTWRITE); 715 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 716 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 717 } 718 719 if (ring->desc_dmat != NULL) 720 bus_dma_tag_destroy(ring->desc_dmat); 721 722 if (ring->data != NULL) { 723 for (i = 0; i < ring->count; i++) { 724 data = &ring->data[i]; 725 726 if (data->m != NULL) { 727 bus_dmamap_sync(ring->data_dmat, data->map, 728 BUS_DMASYNC_POSTREAD); 729 bus_dmamap_unload(ring->data_dmat, data->map); 730 m_freem(data->m); 731 } 732 733 if (data->map != NULL) 734 bus_dmamap_destroy(ring->data_dmat, data->map); 735 } 736 737 free(ring->data, M_DEVBUF); 738 } 739 740 if (ring->data_dmat != NULL) 741 bus_dma_tag_destroy(ring->data_dmat); 742} 743 744static int 745rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 746{ 747 struct rt2560_vap *rvp = RT2560_VAP(vap); 748 struct rt2560_softc *sc = vap->iv_ic->ic_softc; 749 int error; 750 751 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 752 /* abort TSF synchronization */ 753 RAL_WRITE(sc, RT2560_CSR14, 0); 754 755 /* turn association led off */ 756 rt2560_update_led(sc, 0, 0); 757 } 758 759 error = rvp->ral_newstate(vap, nstate, arg); 760 761 if (error == 0 && nstate == IEEE80211_S_RUN) { 762 struct ieee80211_node *ni = vap->iv_bss; 763 struct mbuf *m; 764 765 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 766 rt2560_update_plcp(sc); 767 rt2560_set_basicrates(sc, &ni->ni_rates); 768 rt2560_set_bssid(sc, ni->ni_bssid); 769 } 770 771 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 772 vap->iv_opmode == IEEE80211_M_IBSS || 773 vap->iv_opmode == IEEE80211_M_MBSS) { 774 m = ieee80211_beacon_alloc(ni); 775 if (m == NULL) { 776 device_printf(sc->sc_dev, 777 "could not allocate beacon\n"); 778 return ENOBUFS; 779 } 780 ieee80211_ref_node(ni); 781 error = rt2560_tx_bcn(sc, m, ni); 782 if (error != 0) 783 return error; 784 } 785 786 /* turn association led on */ 787 rt2560_update_led(sc, 1, 0); 788 789 if (vap->iv_opmode != IEEE80211_M_MONITOR) 790 rt2560_enable_tsf_sync(sc); 791 else 792 rt2560_enable_tsf(sc); 793 } 794 return error; 795} 796 797/* 798 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 799 * 93C66). 800 */ 801static uint16_t 802rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 803{ 804 uint32_t tmp; 805 uint16_t val; 806 int n; 807 808 /* clock C once before the first command */ 809 RT2560_EEPROM_CTL(sc, 0); 810 811 RT2560_EEPROM_CTL(sc, RT2560_S); 812 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 813 RT2560_EEPROM_CTL(sc, RT2560_S); 814 815 /* write start bit (1) */ 816 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 817 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 818 819 /* write READ opcode (10) */ 820 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 821 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 822 RT2560_EEPROM_CTL(sc, RT2560_S); 823 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 824 825 /* write address (A5-A0 or A7-A0) */ 826 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 827 for (; n >= 0; n--) { 828 RT2560_EEPROM_CTL(sc, RT2560_S | 829 (((addr >> n) & 1) << RT2560_SHIFT_D)); 830 RT2560_EEPROM_CTL(sc, RT2560_S | 831 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 832 } 833 834 RT2560_EEPROM_CTL(sc, RT2560_S); 835 836 /* read data Q15-Q0 */ 837 val = 0; 838 for (n = 15; n >= 0; n--) { 839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 840 tmp = RAL_READ(sc, RT2560_CSR21); 841 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 842 RT2560_EEPROM_CTL(sc, RT2560_S); 843 } 844 845 RT2560_EEPROM_CTL(sc, 0); 846 847 /* clear Chip Select and clock C */ 848 RT2560_EEPROM_CTL(sc, RT2560_S); 849 RT2560_EEPROM_CTL(sc, 0); 850 RT2560_EEPROM_CTL(sc, RT2560_C); 851 852 return val; 853} 854 855/* 856 * Some frames were processed by the hardware cipher engine and are ready for 857 * transmission. 858 */ 859static void 860rt2560_encryption_intr(struct rt2560_softc *sc) 861{ 862 struct rt2560_tx_desc *desc; 863 int hw; 864 865 /* retrieve last descriptor index processed by cipher engine */ 866 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 867 hw /= RT2560_TX_DESC_SIZE; 868 869 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 870 BUS_DMASYNC_POSTREAD); 871 872 while (sc->txq.next_encrypt != hw) { 873 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 874 printf("hw encrypt %d, cur_encrypt %d\n", hw, 875 sc->txq.cur_encrypt); 876 break; 877 } 878 879 desc = &sc->txq.desc[sc->txq.next_encrypt]; 880 881 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 882 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 883 break; 884 885 /* for TKIP, swap eiv field to fix a bug in ASIC */ 886 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 887 RT2560_TX_CIPHER_TKIP) 888 desc->eiv = bswap32(desc->eiv); 889 890 /* mark the frame ready for transmission */ 891 desc->flags |= htole32(RT2560_TX_VALID); 892 desc->flags |= htole32(RT2560_TX_BUSY); 893 894 DPRINTFN(sc, 15, "encryption done idx=%u\n", 895 sc->txq.next_encrypt); 896 897 sc->txq.next_encrypt = 898 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 899 } 900 901 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 902 BUS_DMASYNC_PREWRITE); 903 904 /* kick Tx */ 905 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 906} 907 908static void 909rt2560_tx_intr(struct rt2560_softc *sc) 910{ 911 struct rt2560_tx_desc *desc; 912 struct rt2560_tx_data *data; 913 struct mbuf *m; 914 struct ieee80211vap *vap; 915 struct ieee80211_node *ni; 916 uint32_t flags; 917 int retrycnt, status; 918 919 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 920 BUS_DMASYNC_POSTREAD); 921 922 for (;;) { 923 desc = &sc->txq.desc[sc->txq.next]; 924 data = &sc->txq.data[sc->txq.next]; 925 926 flags = le32toh(desc->flags); 927 if ((flags & RT2560_TX_BUSY) || 928 (flags & RT2560_TX_CIPHER_BUSY) || 929 !(flags & RT2560_TX_VALID)) 930 break; 931 932 m = data->m; 933 ni = data->ni; 934 vap = ni->ni_vap; 935 936 switch (flags & RT2560_TX_RESULT_MASK) { 937 case RT2560_TX_SUCCESS: 938 retrycnt = 0; 939 940 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 941 if (data->rix != IEEE80211_FIXED_RATE_NONE) 942 ieee80211_ratectl_tx_complete(vap, ni, 943 IEEE80211_RATECTL_TX_SUCCESS, 944 &retrycnt, NULL); 945 status = 0; 946 break; 947 948 case RT2560_TX_SUCCESS_RETRY: 949 retrycnt = RT2560_TX_RETRYCNT(flags); 950 951 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 952 retrycnt); 953 if (data->rix != IEEE80211_FIXED_RATE_NONE) 954 ieee80211_ratectl_tx_complete(vap, ni, 955 IEEE80211_RATECTL_TX_SUCCESS, 956 &retrycnt, NULL); 957 status = 0; 958 break; 959 960 case RT2560_TX_FAIL_RETRY: 961 retrycnt = RT2560_TX_RETRYCNT(flags); 962 963 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 964 retrycnt); 965 if (data->rix != IEEE80211_FIXED_RATE_NONE) 966 ieee80211_ratectl_tx_complete(vap, ni, 967 IEEE80211_RATECTL_TX_FAILURE, 968 &retrycnt, NULL); 969 status = 1; 970 break; 971 972 case RT2560_TX_FAIL_INVALID: 973 case RT2560_TX_FAIL_OTHER: 974 default: 975 device_printf(sc->sc_dev, "sending data frame failed " 976 "0x%08x\n", flags); 977 status = 1; 978 } 979 980 bus_dmamap_sync(sc->txq.data_dmat, data->map, 981 BUS_DMASYNC_POSTWRITE); 982 bus_dmamap_unload(sc->txq.data_dmat, data->map); 983 984 ieee80211_tx_complete(ni, m, status); 985 data->ni = NULL; 986 data->m = NULL; 987 988 /* descriptor is no longer valid */ 989 desc->flags &= ~htole32(RT2560_TX_VALID); 990 991 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 992 993 sc->txq.queued--; 994 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 995 } 996 997 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 998 BUS_DMASYNC_PREWRITE); 999 1000 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1001 sc->sc_tx_timer = 0; 1002 1003 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) 1004 rt2560_start(sc); 1005} 1006 1007static void 1008rt2560_prio_intr(struct rt2560_softc *sc) 1009{ 1010 struct rt2560_tx_desc *desc; 1011 struct rt2560_tx_data *data; 1012 struct ieee80211_node *ni; 1013 struct mbuf *m; 1014 int flags; 1015 1016 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1017 BUS_DMASYNC_POSTREAD); 1018 1019 for (;;) { 1020 desc = &sc->prioq.desc[sc->prioq.next]; 1021 data = &sc->prioq.data[sc->prioq.next]; 1022 1023 flags = le32toh(desc->flags); 1024 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1025 break; 1026 1027 switch (flags & RT2560_TX_RESULT_MASK) { 1028 case RT2560_TX_SUCCESS: 1029 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1030 break; 1031 1032 case RT2560_TX_SUCCESS_RETRY: 1033 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1034 (flags >> 5) & 0x7); 1035 break; 1036 1037 case RT2560_TX_FAIL_RETRY: 1038 DPRINTFN(sc, 9, "%s\n", 1039 "sending mgt frame failed (too much retries)"); 1040 break; 1041 1042 case RT2560_TX_FAIL_INVALID: 1043 case RT2560_TX_FAIL_OTHER: 1044 default: 1045 device_printf(sc->sc_dev, "sending mgt frame failed " 1046 "0x%08x\n", flags); 1047 break; 1048 } 1049 1050 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1051 BUS_DMASYNC_POSTWRITE); 1052 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1053 1054 m = data->m; 1055 data->m = NULL; 1056 ni = data->ni; 1057 data->ni = NULL; 1058 1059 /* descriptor is no longer valid */ 1060 desc->flags &= ~htole32(RT2560_TX_VALID); 1061 1062 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1063 1064 sc->prioq.queued--; 1065 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1066 1067 if (m->m_flags & M_TXCB) 1068 ieee80211_process_callback(ni, m, 1069 (flags & RT2560_TX_RESULT_MASK) &~ 1070 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1071 m_freem(m); 1072 ieee80211_free_node(ni); 1073 } 1074 1075 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1076 BUS_DMASYNC_PREWRITE); 1077 1078 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1079 sc->sc_tx_timer = 0; 1080 1081 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) 1082 rt2560_start(sc); 1083} 1084 1085/* 1086 * Some frames were processed by the hardware cipher engine and are ready for 1087 * handoff to the IEEE802.11 layer. 1088 */ 1089static void 1090rt2560_decryption_intr(struct rt2560_softc *sc) 1091{ 1092 struct ieee80211com *ic = &sc->sc_ic; 1093 struct rt2560_rx_desc *desc; 1094 struct rt2560_rx_data *data; 1095 bus_addr_t physaddr; 1096 struct ieee80211_frame *wh; 1097 struct ieee80211_node *ni; 1098 struct mbuf *mnew, *m; 1099 int hw, error; 1100 int8_t rssi, nf; 1101 1102 /* retrieve last descriptor index processed by cipher engine */ 1103 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1104 hw /= RT2560_RX_DESC_SIZE; 1105 1106 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1107 BUS_DMASYNC_POSTREAD); 1108 1109 for (; sc->rxq.cur_decrypt != hw;) { 1110 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1111 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1112 1113 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1114 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1115 break; 1116 1117 if (data->drop) { 1118 counter_u64_add(ic->ic_ierrors, 1); 1119 goto skip; 1120 } 1121 1122 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1123 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1124 counter_u64_add(ic->ic_ierrors, 1); 1125 goto skip; 1126 } 1127 1128 /* 1129 * Try to allocate a new mbuf for this ring element and load it 1130 * before processing the current mbuf. If the ring element 1131 * cannot be loaded, drop the received packet and reuse the old 1132 * mbuf. In the unlikely case that the old mbuf can't be 1133 * reloaded either, explicitly panic. 1134 */ 1135 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1136 if (mnew == NULL) { 1137 counter_u64_add(ic->ic_ierrors, 1); 1138 goto skip; 1139 } 1140 1141 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1142 BUS_DMASYNC_POSTREAD); 1143 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1144 1145 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1146 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1147 &physaddr, 0); 1148 if (error != 0) { 1149 m_freem(mnew); 1150 1151 /* try to reload the old mbuf */ 1152 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1153 mtod(data->m, void *), MCLBYTES, 1154 rt2560_dma_map_addr, &physaddr, 0); 1155 if (error != 0) { 1156 /* very unlikely that it will fail... */ 1157 panic("%s: could not load old rx mbuf", 1158 device_get_name(sc->sc_dev)); 1159 } 1160 counter_u64_add(ic->ic_ierrors, 1); 1161 goto skip; 1162 } 1163 1164 /* 1165 * New mbuf successfully loaded, update Rx ring and continue 1166 * processing. 1167 */ 1168 m = data->m; 1169 data->m = mnew; 1170 desc->physaddr = htole32(physaddr); 1171 1172 /* finalize mbuf */ 1173 m->m_pkthdr.len = m->m_len = 1174 (le32toh(desc->flags) >> 16) & 0xfff; 1175 1176 rssi = RT2560_RSSI(sc, desc->rssi); 1177 nf = RT2560_NOISE_FLOOR; 1178 if (ieee80211_radiotap_active(ic)) { 1179 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1180 uint32_t tsf_lo, tsf_hi; 1181 1182 /* get timestamp (low and high 32 bits) */ 1183 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1184 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1185 1186 tap->wr_tsf = 1187 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1188 tap->wr_flags = 0; 1189 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1190 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1191 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1192 tap->wr_antenna = sc->rx_ant; 1193 tap->wr_antsignal = nf + rssi; 1194 tap->wr_antnoise = nf; 1195 } 1196 1197 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1198 RAL_UNLOCK(sc); 1199 wh = mtod(m, struct ieee80211_frame *); 1200 ni = ieee80211_find_rxnode(ic, 1201 (struct ieee80211_frame_min *)wh); 1202 if (ni != NULL) { 1203 (void) ieee80211_input(ni, m, rssi, nf); 1204 ieee80211_free_node(ni); 1205 } else 1206 (void) ieee80211_input_all(ic, m, rssi, nf); 1207 1208 RAL_LOCK(sc); 1209 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1210skip: desc->flags = htole32(RT2560_RX_BUSY); 1211 1212 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1213 1214 sc->rxq.cur_decrypt = 1215 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1216 } 1217 1218 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1219 BUS_DMASYNC_PREWRITE); 1220} 1221 1222/* 1223 * Some frames were received. Pass them to the hardware cipher engine before 1224 * sending them to the 802.11 layer. 1225 */ 1226static void 1227rt2560_rx_intr(struct rt2560_softc *sc) 1228{ 1229 struct rt2560_rx_desc *desc; 1230 struct rt2560_rx_data *data; 1231 1232 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1233 BUS_DMASYNC_POSTREAD); 1234 1235 for (;;) { 1236 desc = &sc->rxq.desc[sc->rxq.cur]; 1237 data = &sc->rxq.data[sc->rxq.cur]; 1238 1239 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1240 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1241 break; 1242 1243 data->drop = 0; 1244 1245 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1246 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1247 /* 1248 * This should not happen since we did not request 1249 * to receive those frames when we filled RXCSR0. 1250 */ 1251 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1252 le32toh(desc->flags)); 1253 data->drop = 1; 1254 } 1255 1256 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1257 DPRINTFN(sc, 5, "%s\n", "bad length"); 1258 data->drop = 1; 1259 } 1260 1261 /* mark the frame for decryption */ 1262 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1263 1264 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1265 1266 sc->rxq.cur = (sc->rxq.cur + 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 /* kick decrypt */ 1273 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1274} 1275 1276static void 1277rt2560_beacon_update(struct ieee80211vap *vap, int item) 1278{ 1279 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 1280 1281 setbit(bo->bo_flags, item); 1282} 1283 1284/* 1285 * This function is called periodically in IBSS mode when a new beacon must be 1286 * sent out. 1287 */ 1288static void 1289rt2560_beacon_expire(struct rt2560_softc *sc) 1290{ 1291 struct ieee80211com *ic = &sc->sc_ic; 1292 struct rt2560_tx_data *data; 1293 1294 if (ic->ic_opmode != IEEE80211_M_IBSS && 1295 ic->ic_opmode != IEEE80211_M_HOSTAP && 1296 ic->ic_opmode != IEEE80211_M_MBSS) 1297 return; 1298 1299 data = &sc->bcnq.data[sc->bcnq.next]; 1300 /* 1301 * Don't send beacon if bsschan isn't set 1302 */ 1303 if (data->ni == NULL) 1304 return; 1305 1306 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1307 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1308 1309 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1310 ieee80211_beacon_update(data->ni, data->m, 1); 1311 1312 rt2560_tx_bcn(sc, data->m, data->ni); 1313 1314 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1315 1316 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1317} 1318 1319/* ARGSUSED */ 1320static void 1321rt2560_wakeup_expire(struct rt2560_softc *sc) 1322{ 1323 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1324} 1325 1326void 1327rt2560_intr(void *arg) 1328{ 1329 struct rt2560_softc *sc = arg; 1330 uint32_t r; 1331 1332 RAL_LOCK(sc); 1333 1334 /* disable interrupts */ 1335 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1336 1337 /* don't re-enable interrupts if we're shutting down */ 1338 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 1339 RAL_UNLOCK(sc); 1340 return; 1341 } 1342 1343 r = RAL_READ(sc, RT2560_CSR7); 1344 RAL_WRITE(sc, RT2560_CSR7, r); 1345 1346 if (r & RT2560_BEACON_EXPIRE) 1347 rt2560_beacon_expire(sc); 1348 1349 if (r & RT2560_WAKEUP_EXPIRE) 1350 rt2560_wakeup_expire(sc); 1351 1352 if (r & RT2560_ENCRYPTION_DONE) 1353 rt2560_encryption_intr(sc); 1354 1355 if (r & RT2560_TX_DONE) 1356 rt2560_tx_intr(sc); 1357 1358 if (r & RT2560_PRIO_DONE) 1359 rt2560_prio_intr(sc); 1360 1361 if (r & RT2560_DECRYPTION_DONE) 1362 rt2560_decryption_intr(sc); 1363 1364 if (r & RT2560_RX_DONE) { 1365 rt2560_rx_intr(sc); 1366 rt2560_encryption_intr(sc); 1367 } 1368 1369 /* re-enable interrupts */ 1370 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1371 1372 RAL_UNLOCK(sc); 1373} 1374 1375#define RAL_SIFS 10 /* us */ 1376 1377#define RT2560_TXRX_TURNAROUND 10 /* us */ 1378 1379static uint8_t 1380rt2560_plcp_signal(int rate) 1381{ 1382 switch (rate) { 1383 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1384 case 12: return 0xb; 1385 case 18: return 0xf; 1386 case 24: return 0xa; 1387 case 36: return 0xe; 1388 case 48: return 0x9; 1389 case 72: return 0xd; 1390 case 96: return 0x8; 1391 case 108: return 0xc; 1392 1393 /* CCK rates (NB: not IEEE std, device-specific) */ 1394 case 2: return 0x0; 1395 case 4: return 0x1; 1396 case 11: return 0x2; 1397 case 22: return 0x3; 1398 } 1399 return 0xff; /* XXX unsupported/unknown rate */ 1400} 1401 1402static void 1403rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1404 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1405{ 1406 struct ieee80211com *ic = &sc->sc_ic; 1407 uint16_t plcp_length; 1408 int remainder; 1409 1410 desc->flags = htole32(flags); 1411 desc->flags |= htole32(len << 16); 1412 1413 desc->physaddr = htole32(physaddr); 1414 desc->wme = htole16( 1415 RT2560_AIFSN(2) | 1416 RT2560_LOGCWMIN(3) | 1417 RT2560_LOGCWMAX(8)); 1418 1419 /* setup PLCP fields */ 1420 desc->plcp_signal = rt2560_plcp_signal(rate); 1421 desc->plcp_service = 4; 1422 1423 len += IEEE80211_CRC_LEN; 1424 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1425 desc->flags |= htole32(RT2560_TX_OFDM); 1426 1427 plcp_length = len & 0xfff; 1428 desc->plcp_length_hi = plcp_length >> 6; 1429 desc->plcp_length_lo = plcp_length & 0x3f; 1430 } else { 1431 plcp_length = howmany(16 * len, rate); 1432 if (rate == 22) { 1433 remainder = (16 * len) % 22; 1434 if (remainder != 0 && remainder < 7) 1435 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1436 } 1437 desc->plcp_length_hi = plcp_length >> 8; 1438 desc->plcp_length_lo = plcp_length & 0xff; 1439 1440 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1441 desc->plcp_signal |= 0x08; 1442 } 1443 1444 if (!encrypt) 1445 desc->flags |= htole32(RT2560_TX_VALID); 1446 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1447 : htole32(RT2560_TX_BUSY); 1448} 1449 1450static int 1451rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1452 struct ieee80211_node *ni) 1453{ 1454 struct ieee80211vap *vap = ni->ni_vap; 1455 struct rt2560_tx_desc *desc; 1456 struct rt2560_tx_data *data; 1457 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1458 int nsegs, rate, error; 1459 1460 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1461 data = &sc->bcnq.data[sc->bcnq.cur]; 1462 1463 /* XXX maybe a separate beacon rate? */ 1464 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1465 1466 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1467 segs, &nsegs, BUS_DMA_NOWAIT); 1468 if (error != 0) { 1469 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1470 error); 1471 m_freem(m0); 1472 return error; 1473 } 1474 1475 if (ieee80211_radiotap_active_vap(vap)) { 1476 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1477 1478 tap->wt_flags = 0; 1479 tap->wt_rate = rate; 1480 tap->wt_antenna = sc->tx_ant; 1481 1482 ieee80211_radiotap_tx(vap, m0); 1483 } 1484 1485 data->m = m0; 1486 data->ni = ni; 1487 1488 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1489 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1490 1491 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1492 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1493 1494 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1495 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1496 BUS_DMASYNC_PREWRITE); 1497 1498 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1499 1500 return 0; 1501} 1502 1503static int 1504rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1505 struct ieee80211_node *ni) 1506{ 1507 struct ieee80211vap *vap = ni->ni_vap; 1508 struct ieee80211com *ic = ni->ni_ic; 1509 struct rt2560_tx_desc *desc; 1510 struct rt2560_tx_data *data; 1511 struct ieee80211_frame *wh; 1512 struct ieee80211_key *k; 1513 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1514 uint16_t dur; 1515 uint32_t flags = 0; 1516 int nsegs, rate, error; 1517 1518 desc = &sc->prioq.desc[sc->prioq.cur]; 1519 data = &sc->prioq.data[sc->prioq.cur]; 1520 1521 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1522 1523 wh = mtod(m0, struct ieee80211_frame *); 1524 1525 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1526 k = ieee80211_crypto_encap(ni, m0); 1527 if (k == NULL) { 1528 m_freem(m0); 1529 return ENOBUFS; 1530 } 1531 } 1532 1533 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1534 segs, &nsegs, 0); 1535 if (error != 0) { 1536 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1537 error); 1538 m_freem(m0); 1539 return error; 1540 } 1541 1542 if (ieee80211_radiotap_active_vap(vap)) { 1543 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1544 1545 tap->wt_flags = 0; 1546 tap->wt_rate = rate; 1547 tap->wt_antenna = sc->tx_ant; 1548 1549 ieee80211_radiotap_tx(vap, m0); 1550 } 1551 1552 data->m = m0; 1553 data->ni = ni; 1554 /* management frames are not taken into account for amrr */ 1555 data->rix = IEEE80211_FIXED_RATE_NONE; 1556 1557 wh = mtod(m0, struct ieee80211_frame *); 1558 1559 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1560 flags |= RT2560_TX_ACK; 1561 1562 dur = ieee80211_ack_duration(ic->ic_rt, 1563 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1564 *(uint16_t *)wh->i_dur = htole16(dur); 1565 1566 /* tell hardware to add timestamp for probe responses */ 1567 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1568 IEEE80211_FC0_TYPE_MGT && 1569 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1570 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1571 flags |= RT2560_TX_TIMESTAMP; 1572 } 1573 1574 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1575 segs->ds_addr); 1576 1577 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1578 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1579 BUS_DMASYNC_PREWRITE); 1580 1581 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1582 m0->m_pkthdr.len, sc->prioq.cur, rate); 1583 1584 /* kick prio */ 1585 sc->prioq.queued++; 1586 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1587 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1588 1589 return 0; 1590} 1591 1592static int 1593rt2560_sendprot(struct rt2560_softc *sc, 1594 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1595{ 1596 struct ieee80211com *ic = ni->ni_ic; 1597 const struct ieee80211_frame *wh; 1598 struct rt2560_tx_desc *desc; 1599 struct rt2560_tx_data *data; 1600 struct mbuf *mprot; 1601 int protrate, ackrate, pktlen, flags, isshort, error; 1602 uint16_t dur; 1603 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1604 int nsegs; 1605 1606 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1607 ("protection %d", prot)); 1608 1609 wh = mtod(m, const struct ieee80211_frame *); 1610 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1611 1612 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1613 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1614 1615 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1616 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1617 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1618 flags = RT2560_TX_MORE_FRAG; 1619 if (prot == IEEE80211_PROT_RTSCTS) { 1620 /* NB: CTS is the same size as an ACK */ 1621 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1622 flags |= RT2560_TX_ACK; 1623 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1624 } else { 1625 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1626 } 1627 if (mprot == NULL) { 1628 /* XXX stat + msg */ 1629 return ENOBUFS; 1630 } 1631 1632 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1633 data = &sc->txq.data[sc->txq.cur_encrypt]; 1634 1635 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1636 mprot, segs, &nsegs, 0); 1637 if (error != 0) { 1638 device_printf(sc->sc_dev, 1639 "could not map mbuf (error %d)\n", error); 1640 m_freem(mprot); 1641 return error; 1642 } 1643 1644 data->m = mprot; 1645 data->ni = ieee80211_ref_node(ni); 1646 /* ctl frames are not taken into account for amrr */ 1647 data->rix = IEEE80211_FIXED_RATE_NONE; 1648 1649 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1650 segs->ds_addr); 1651 1652 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1653 BUS_DMASYNC_PREWRITE); 1654 1655 sc->txq.queued++; 1656 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1657 1658 return 0; 1659} 1660 1661static int 1662rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1663 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1664{ 1665 struct ieee80211vap *vap = ni->ni_vap; 1666 struct ieee80211com *ic = ni->ni_ic; 1667 struct rt2560_tx_desc *desc; 1668 struct rt2560_tx_data *data; 1669 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1670 uint32_t flags; 1671 int nsegs, rate, error; 1672 1673 desc = &sc->prioq.desc[sc->prioq.cur]; 1674 data = &sc->prioq.data[sc->prioq.cur]; 1675 1676 rate = params->ibp_rate0; 1677 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1678 /* XXX fall back to mcast/mgmt rate? */ 1679 m_freem(m0); 1680 return EINVAL; 1681 } 1682 1683 flags = 0; 1684 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1685 flags |= RT2560_TX_ACK; 1686 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1687 error = rt2560_sendprot(sc, m0, ni, 1688 params->ibp_flags & IEEE80211_BPF_RTS ? 1689 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1690 rate); 1691 if (error) { 1692 m_freem(m0); 1693 return error; 1694 } 1695 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1696 } 1697 1698 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1699 segs, &nsegs, 0); 1700 if (error != 0) { 1701 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1702 error); 1703 m_freem(m0); 1704 return error; 1705 } 1706 1707 if (ieee80211_radiotap_active_vap(vap)) { 1708 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1709 1710 tap->wt_flags = 0; 1711 tap->wt_rate = rate; 1712 tap->wt_antenna = sc->tx_ant; 1713 1714 ieee80211_radiotap_tx(ni->ni_vap, m0); 1715 } 1716 1717 data->m = m0; 1718 data->ni = ni; 1719 1720 /* XXX need to setup descriptor ourself */ 1721 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1722 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1723 segs->ds_addr); 1724 1725 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1726 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1727 BUS_DMASYNC_PREWRITE); 1728 1729 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1730 m0->m_pkthdr.len, sc->prioq.cur, rate); 1731 1732 /* kick prio */ 1733 sc->prioq.queued++; 1734 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1735 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1736 1737 return 0; 1738} 1739 1740static int 1741rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1742 struct ieee80211_node *ni) 1743{ 1744 struct ieee80211vap *vap = ni->ni_vap; 1745 struct ieee80211com *ic = ni->ni_ic; 1746 struct rt2560_tx_desc *desc; 1747 struct rt2560_tx_data *data; 1748 struct ieee80211_frame *wh; 1749 const struct ieee80211_txparam *tp; 1750 struct ieee80211_key *k; 1751 struct mbuf *mnew; 1752 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1753 uint16_t dur; 1754 uint32_t flags; 1755 int nsegs, rate, error; 1756 1757 wh = mtod(m0, struct ieee80211_frame *); 1758 1759 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1760 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1761 rate = tp->mcastrate; 1762 } else if (m0->m_flags & M_EAPOL) { 1763 rate = tp->mgmtrate; 1764 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1765 rate = tp->ucastrate; 1766 } else { 1767 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1768 rate = ni->ni_txrate; 1769 } 1770 1771 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1772 k = ieee80211_crypto_encap(ni, m0); 1773 if (k == NULL) { 1774 m_freem(m0); 1775 return ENOBUFS; 1776 } 1777 1778 /* packet header may have moved, reset our local pointer */ 1779 wh = mtod(m0, struct ieee80211_frame *); 1780 } 1781 1782 flags = 0; 1783 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1784 int prot = IEEE80211_PROT_NONE; 1785 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1786 prot = IEEE80211_PROT_RTSCTS; 1787 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1788 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1789 prot = ic->ic_protmode; 1790 if (prot != IEEE80211_PROT_NONE) { 1791 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1792 if (error) { 1793 m_freem(m0); 1794 return error; 1795 } 1796 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1797 } 1798 } 1799 1800 data = &sc->txq.data[sc->txq.cur_encrypt]; 1801 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1802 1803 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1804 segs, &nsegs, 0); 1805 if (error != 0 && error != EFBIG) { 1806 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1807 error); 1808 m_freem(m0); 1809 return error; 1810 } 1811 if (error != 0) { 1812 mnew = m_defrag(m0, M_NOWAIT); 1813 if (mnew == NULL) { 1814 device_printf(sc->sc_dev, 1815 "could not defragment mbuf\n"); 1816 m_freem(m0); 1817 return ENOBUFS; 1818 } 1819 m0 = mnew; 1820 1821 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1822 m0, segs, &nsegs, 0); 1823 if (error != 0) { 1824 device_printf(sc->sc_dev, 1825 "could not map mbuf (error %d)\n", error); 1826 m_freem(m0); 1827 return error; 1828 } 1829 1830 /* packet header may have moved, reset our local pointer */ 1831 wh = mtod(m0, struct ieee80211_frame *); 1832 } 1833 1834 if (ieee80211_radiotap_active_vap(vap)) { 1835 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1836 1837 tap->wt_flags = 0; 1838 tap->wt_rate = rate; 1839 tap->wt_antenna = sc->tx_ant; 1840 1841 ieee80211_radiotap_tx(vap, m0); 1842 } 1843 1844 data->m = m0; 1845 data->ni = ni; 1846 1847 /* remember link conditions for rate adaptation algorithm */ 1848 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1849 data->rix = ni->ni_txrate; 1850 /* XXX probably need last rssi value and not avg */ 1851 data->rssi = ic->ic_node_getrssi(ni); 1852 } else 1853 data->rix = IEEE80211_FIXED_RATE_NONE; 1854 1855 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1856 flags |= RT2560_TX_ACK; 1857 1858 dur = ieee80211_ack_duration(ic->ic_rt, 1859 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1860 *(uint16_t *)wh->i_dur = htole16(dur); 1861 } 1862 1863 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1864 segs->ds_addr); 1865 1866 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1867 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1868 BUS_DMASYNC_PREWRITE); 1869 1870 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1871 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1872 1873 /* kick encrypt */ 1874 sc->txq.queued++; 1875 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1876 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1877 1878 return 0; 1879} 1880 1881static int 1882rt2560_transmit(struct ieee80211com *ic, struct mbuf *m) 1883{ 1884 struct rt2560_softc *sc = ic->ic_softc; 1885 int error; 1886 1887 RAL_LOCK(sc); 1888 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1889 RAL_UNLOCK(sc); 1890 return (ENXIO); 1891 } 1892 error = mbufq_enqueue(&sc->sc_snd, m); 1893 if (error) { 1894 RAL_UNLOCK(sc); 1895 return (error); 1896 } 1897 rt2560_start(sc); 1898 RAL_UNLOCK(sc); 1899 1900 return (0); 1901} 1902 1903static void 1904rt2560_start(struct rt2560_softc *sc) 1905{ 1906 struct ieee80211_node *ni; 1907 struct mbuf *m; 1908 1909 RAL_LOCK_ASSERT(sc); 1910 1911 while (sc->txq.queued < RT2560_TX_RING_COUNT - 1 && 1912 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1913 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1914 if (rt2560_tx_data(sc, m, ni) != 0) { 1915 if_inc_counter(ni->ni_vap->iv_ifp, 1916 IFCOUNTER_OERRORS, 1); 1917 ieee80211_free_node(ni); 1918 break; 1919 } 1920 sc->sc_tx_timer = 5; 1921 } 1922} 1923 1924static void 1925rt2560_watchdog(void *arg) 1926{ 1927 struct rt2560_softc *sc = arg; 1928 1929 RAL_LOCK_ASSERT(sc); 1930 1931 KASSERT(sc->sc_flags & RT2560_F_RUNNING, ("not running")); 1932 1933 if (sc->sc_invalid) /* card ejected */ 1934 return; 1935 1936 rt2560_encryption_intr(sc); 1937 rt2560_tx_intr(sc); 1938 1939 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1940 device_printf(sc->sc_dev, "device timeout\n"); 1941 rt2560_init_locked(sc); 1942 counter_u64_add(sc->sc_ic.ic_oerrors, 1); 1943 /* NB: callout is reset in rt2560_init() */ 1944 return; 1945 } 1946 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1947} 1948 1949static void 1950rt2560_parent(struct ieee80211com *ic) 1951{ 1952 struct rt2560_softc *sc = ic->ic_softc; 1953 int startall = 0; 1954 1955 RAL_LOCK(sc); 1956 if (ic->ic_nrunning > 0) { 1957 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1958 rt2560_init_locked(sc); 1959 startall = 1; 1960 } else 1961 rt2560_update_promisc(ic); 1962 } else if (sc->sc_flags & RT2560_F_RUNNING) 1963 rt2560_stop_locked(sc); 1964 RAL_UNLOCK(sc); 1965 if (startall) 1966 ieee80211_start_all(ic); 1967} 1968 1969static void 1970rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 1971{ 1972 uint32_t tmp; 1973 int ntries; 1974 1975 for (ntries = 0; ntries < 100; ntries++) { 1976 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1977 break; 1978 DELAY(1); 1979 } 1980 if (ntries == 100) { 1981 device_printf(sc->sc_dev, "could not write to BBP\n"); 1982 return; 1983 } 1984 1985 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 1986 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 1987 1988 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 1989} 1990 1991static uint8_t 1992rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 1993{ 1994 uint32_t val; 1995 int ntries; 1996 1997 for (ntries = 0; ntries < 100; ntries++) { 1998 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1999 break; 2000 DELAY(1); 2001 } 2002 if (ntries == 100) { 2003 device_printf(sc->sc_dev, "could not read from BBP\n"); 2004 return 0; 2005 } 2006 2007 val = RT2560_BBP_BUSY | reg << 8; 2008 RAL_WRITE(sc, RT2560_BBPCSR, val); 2009 2010 for (ntries = 0; ntries < 100; ntries++) { 2011 val = RAL_READ(sc, RT2560_BBPCSR); 2012 if (!(val & RT2560_BBP_BUSY)) 2013 return val & 0xff; 2014 DELAY(1); 2015 } 2016 2017 device_printf(sc->sc_dev, "could not read from BBP\n"); 2018 return 0; 2019} 2020 2021static void 2022rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2023{ 2024 uint32_t tmp; 2025 int ntries; 2026 2027 for (ntries = 0; ntries < 100; ntries++) { 2028 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2029 break; 2030 DELAY(1); 2031 } 2032 if (ntries == 100) { 2033 device_printf(sc->sc_dev, "could not write to RF\n"); 2034 return; 2035 } 2036 2037 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2038 (reg & 0x3); 2039 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2040 2041 /* remember last written value in sc */ 2042 sc->rf_regs[reg] = val; 2043 2044 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2045} 2046 2047static void 2048rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2049{ 2050 struct ieee80211com *ic = &sc->sc_ic; 2051 uint8_t power, tmp; 2052 u_int i, chan; 2053 2054 chan = ieee80211_chan2ieee(ic, c); 2055 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2056 2057 if (IEEE80211_IS_CHAN_2GHZ(c)) 2058 power = min(sc->txpow[chan - 1], 31); 2059 else 2060 power = 31; 2061 2062 /* adjust txpower using ifconfig settings */ 2063 power -= (100 - ic->ic_txpowlimit) / 8; 2064 2065 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2066 2067 switch (sc->rf_rev) { 2068 case RT2560_RF_2522: 2069 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2070 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2071 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2072 break; 2073 2074 case RT2560_RF_2523: 2075 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2076 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2077 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2078 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2079 break; 2080 2081 case RT2560_RF_2524: 2082 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2083 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2084 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2085 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2086 break; 2087 2088 case RT2560_RF_2525: 2089 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2090 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2091 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2092 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2093 2094 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2095 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2096 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2097 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2098 break; 2099 2100 case RT2560_RF_2525E: 2101 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2102 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2103 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2104 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2105 break; 2106 2107 case RT2560_RF_2526: 2108 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2109 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2110 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2111 2112 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2113 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2114 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2115 break; 2116 2117 /* dual-band RF */ 2118 case RT2560_RF_5222: 2119 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2120 2121 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2122 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2123 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2124 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2125 break; 2126 default: 2127 printf("unknown ral rev=%d\n", sc->rf_rev); 2128 } 2129 2130 /* XXX */ 2131 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2132 /* set Japan filter bit for channel 14 */ 2133 tmp = rt2560_bbp_read(sc, 70); 2134 2135 tmp &= ~RT2560_JAPAN_FILTER; 2136 if (chan == 14) 2137 tmp |= RT2560_JAPAN_FILTER; 2138 2139 rt2560_bbp_write(sc, 70, tmp); 2140 2141 /* clear CRC errors */ 2142 RAL_READ(sc, RT2560_CNT0); 2143 } 2144} 2145 2146static void 2147rt2560_getradiocaps(struct ieee80211com *ic, 2148 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2149{ 2150 struct rt2560_softc *sc = ic->ic_softc; 2151 uint8_t bands[IEEE80211_MODE_BYTES]; 2152 2153 memset(bands, 0, sizeof(bands)); 2154 setbit(bands, IEEE80211_MODE_11B); 2155 setbit(bands, IEEE80211_MODE_11G); 2156 ieee80211_add_channels_default_2ghz(chans, maxchans, nchans, bands, 0); 2157 2158 if (sc->rf_rev == RT2560_RF_5222) { 2159 setbit(bands, IEEE80211_MODE_11A); 2160 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans, 2161 rt2560_chan_5ghz, nitems(rt2560_chan_5ghz), bands, 0); 2162 } 2163} 2164 2165static void 2166rt2560_set_channel(struct ieee80211com *ic) 2167{ 2168 struct rt2560_softc *sc = ic->ic_softc; 2169 2170 RAL_LOCK(sc); 2171 rt2560_set_chan(sc, ic->ic_curchan); 2172 RAL_UNLOCK(sc); 2173 2174} 2175 2176#if 0 2177/* 2178 * Disable RF auto-tuning. 2179 */ 2180static void 2181rt2560_disable_rf_tune(struct rt2560_softc *sc) 2182{ 2183 uint32_t tmp; 2184 2185 if (sc->rf_rev != RT2560_RF_2523) { 2186 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2187 rt2560_rf_write(sc, RAL_RF1, tmp); 2188 } 2189 2190 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2191 rt2560_rf_write(sc, RAL_RF3, tmp); 2192 2193 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2194} 2195#endif 2196 2197/* 2198 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2199 * synchronization. 2200 */ 2201static void 2202rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2203{ 2204 struct ieee80211com *ic = &sc->sc_ic; 2205 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2206 uint16_t logcwmin, preload; 2207 uint32_t tmp; 2208 2209 /* first, disable TSF synchronization */ 2210 RAL_WRITE(sc, RT2560_CSR14, 0); 2211 2212 tmp = 16 * vap->iv_bss->ni_intval; 2213 RAL_WRITE(sc, RT2560_CSR12, tmp); 2214 2215 RAL_WRITE(sc, RT2560_CSR13, 0); 2216 2217 logcwmin = 5; 2218 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2219 tmp = logcwmin << 16 | preload; 2220 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2221 2222 /* finally, enable TSF synchronization */ 2223 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2224 if (ic->ic_opmode == IEEE80211_M_STA) 2225 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2226 else 2227 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2228 RT2560_ENABLE_BEACON_GENERATOR; 2229 RAL_WRITE(sc, RT2560_CSR14, tmp); 2230 2231 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2232} 2233 2234static void 2235rt2560_enable_tsf(struct rt2560_softc *sc) 2236{ 2237 RAL_WRITE(sc, RT2560_CSR14, 0); 2238 RAL_WRITE(sc, RT2560_CSR14, 2239 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2240} 2241 2242static void 2243rt2560_update_plcp(struct rt2560_softc *sc) 2244{ 2245 struct ieee80211com *ic = &sc->sc_ic; 2246 2247 /* no short preamble for 1Mbps */ 2248 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2249 2250 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2251 /* values taken from the reference driver */ 2252 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2253 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2254 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2255 } else { 2256 /* same values as above or'ed 0x8 */ 2257 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2258 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2259 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2260 } 2261 2262 DPRINTF(sc, "updating PLCP for %s preamble\n", 2263 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2264} 2265 2266/* 2267 * This function can be called by ieee80211_set_shortslottime(). Refer to 2268 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2269 */ 2270static void 2271rt2560_update_slot(struct ieee80211com *ic) 2272{ 2273 struct rt2560_softc *sc = ic->ic_softc; 2274 uint8_t slottime; 2275 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2276 uint32_t tmp; 2277 2278#ifndef FORCE_SLOTTIME 2279 slottime = IEEE80211_GET_SLOTTIME(ic); 2280#else 2281 /* 2282 * Setting slot time according to "short slot time" capability 2283 * in beacon/probe_resp seems to cause problem to acknowledge 2284 * certain AP's data frames transimitted at CCK/DS rates: the 2285 * problematic AP keeps retransmitting data frames, probably 2286 * because MAC level acks are not received by hardware. 2287 * So we cheat a little bit here by claiming we are capable of 2288 * "short slot time" but setting hardware slot time to the normal 2289 * slot time. ral(4) does not seem to have trouble to receive 2290 * frames transmitted using short slot time even if hardware 2291 * slot time is set to normal slot time. If we didn't use this 2292 * trick, we would have to claim that short slot time is not 2293 * supported; this would give relative poor RX performance 2294 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2295 * slot time. 2296 */ 2297 slottime = IEEE80211_DUR_SLOT; 2298#endif 2299 2300 /* update the MAC slot boundaries */ 2301 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2302 tx_pifs = tx_sifs + slottime; 2303 tx_difs = IEEE80211_DUR_DIFS(tx_sifs, slottime); 2304 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2305 2306 tmp = RAL_READ(sc, RT2560_CSR11); 2307 tmp = (tmp & ~0x1f00) | slottime << 8; 2308 RAL_WRITE(sc, RT2560_CSR11, tmp); 2309 2310 tmp = tx_pifs << 16 | tx_sifs; 2311 RAL_WRITE(sc, RT2560_CSR18, tmp); 2312 2313 tmp = eifs << 16 | tx_difs; 2314 RAL_WRITE(sc, RT2560_CSR19, tmp); 2315 2316 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2317} 2318 2319static void 2320rt2560_set_basicrates(struct rt2560_softc *sc, 2321 const struct ieee80211_rateset *rs) 2322{ 2323 struct ieee80211com *ic = &sc->sc_ic; 2324 uint32_t mask = 0; 2325 uint8_t rate; 2326 int i; 2327 2328 for (i = 0; i < rs->rs_nrates; i++) { 2329 rate = rs->rs_rates[i]; 2330 2331 if (!(rate & IEEE80211_RATE_BASIC)) 2332 continue; 2333 2334 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, 2335 IEEE80211_RV(rate)); 2336 } 2337 2338 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2339 2340 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2341} 2342 2343static void 2344rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2345{ 2346 uint32_t tmp; 2347 2348 /* set ON period to 70ms and OFF period to 30ms */ 2349 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2350 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2351} 2352 2353static void 2354rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2355{ 2356 uint32_t tmp; 2357 2358 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2359 RAL_WRITE(sc, RT2560_CSR5, tmp); 2360 2361 tmp = bssid[4] | bssid[5] << 8; 2362 RAL_WRITE(sc, RT2560_CSR6, tmp); 2363 2364 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2365} 2366 2367static void 2368rt2560_set_macaddr(struct rt2560_softc *sc, const uint8_t *addr) 2369{ 2370 uint32_t tmp; 2371 2372 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2373 RAL_WRITE(sc, RT2560_CSR3, tmp); 2374 2375 tmp = addr[4] | addr[5] << 8; 2376 RAL_WRITE(sc, RT2560_CSR4, tmp); 2377 2378 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2379} 2380 2381static void 2382rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2383{ 2384 uint32_t tmp; 2385 2386 tmp = RAL_READ(sc, RT2560_CSR3); 2387 addr[0] = tmp & 0xff; 2388 addr[1] = (tmp >> 8) & 0xff; 2389 addr[2] = (tmp >> 16) & 0xff; 2390 addr[3] = (tmp >> 24); 2391 2392 tmp = RAL_READ(sc, RT2560_CSR4); 2393 addr[4] = tmp & 0xff; 2394 addr[5] = (tmp >> 8) & 0xff; 2395} 2396 2397static void 2398rt2560_update_promisc(struct ieee80211com *ic) 2399{ 2400 struct rt2560_softc *sc = ic->ic_softc; 2401 uint32_t tmp; 2402 2403 tmp = RAL_READ(sc, RT2560_RXCSR0); 2404 2405 tmp &= ~RT2560_DROP_NOT_TO_ME; 2406 if (ic->ic_promisc == 0) 2407 tmp |= RT2560_DROP_NOT_TO_ME; 2408 2409 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2410 2411 DPRINTF(sc, "%s promiscuous mode\n", 2412 (ic->ic_promisc > 0) ? "entering" : "leaving"); 2413} 2414 2415static const char * 2416rt2560_get_rf(int rev) 2417{ 2418 switch (rev) { 2419 case RT2560_RF_2522: return "RT2522"; 2420 case RT2560_RF_2523: return "RT2523"; 2421 case RT2560_RF_2524: return "RT2524"; 2422 case RT2560_RF_2525: return "RT2525"; 2423 case RT2560_RF_2525E: return "RT2525e"; 2424 case RT2560_RF_2526: return "RT2526"; 2425 case RT2560_RF_5222: return "RT5222"; 2426 default: return "unknown"; 2427 } 2428} 2429 2430static void 2431rt2560_read_config(struct rt2560_softc *sc) 2432{ 2433 uint16_t val; 2434 int i; 2435 2436 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2437 sc->rf_rev = (val >> 11) & 0x7; 2438 sc->hw_radio = (val >> 10) & 0x1; 2439 sc->led_mode = (val >> 6) & 0x7; 2440 sc->rx_ant = (val >> 4) & 0x3; 2441 sc->tx_ant = (val >> 2) & 0x3; 2442 sc->nb_ant = val & 0x3; 2443 2444 /* read default values for BBP registers */ 2445 for (i = 0; i < 16; i++) { 2446 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2447 if (val == 0 || val == 0xffff) 2448 continue; 2449 2450 sc->bbp_prom[i].reg = val >> 8; 2451 sc->bbp_prom[i].val = val & 0xff; 2452 } 2453 2454 /* read Tx power for all b/g channels */ 2455 for (i = 0; i < 14 / 2; i++) { 2456 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2457 sc->txpow[i * 2] = val & 0xff; 2458 sc->txpow[i * 2 + 1] = val >> 8; 2459 } 2460 for (i = 0; i < 14; ++i) { 2461 if (sc->txpow[i] > 31) 2462 sc->txpow[i] = 24; 2463 } 2464 2465 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2466 if ((val & 0xff) == 0xff) 2467 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2468 else 2469 sc->rssi_corr = val & 0xff; 2470 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2471 sc->rssi_corr, val); 2472} 2473 2474 2475static void 2476rt2560_scan_start(struct ieee80211com *ic) 2477{ 2478 struct rt2560_softc *sc = ic->ic_softc; 2479 2480 /* abort TSF synchronization */ 2481 RAL_WRITE(sc, RT2560_CSR14, 0); 2482 rt2560_set_bssid(sc, ieee80211broadcastaddr); 2483} 2484 2485static void 2486rt2560_scan_end(struct ieee80211com *ic) 2487{ 2488 struct rt2560_softc *sc = ic->ic_softc; 2489 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2490 2491 rt2560_enable_tsf_sync(sc); 2492 /* XXX keep local copy */ 2493 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2494} 2495 2496static int 2497rt2560_bbp_init(struct rt2560_softc *sc) 2498{ 2499 int i, ntries; 2500 2501 /* wait for BBP to be ready */ 2502 for (ntries = 0; ntries < 100; ntries++) { 2503 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2504 break; 2505 DELAY(1); 2506 } 2507 if (ntries == 100) { 2508 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2509 return EIO; 2510 } 2511 2512 /* initialize BBP registers to default values */ 2513 for (i = 0; i < nitems(rt2560_def_bbp); i++) { 2514 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2515 rt2560_def_bbp[i].val); 2516 } 2517 2518 /* initialize BBP registers to values stored in EEPROM */ 2519 for (i = 0; i < 16; i++) { 2520 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2521 break; 2522 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2523 } 2524 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2525 2526 return 0; 2527} 2528 2529static void 2530rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2531{ 2532 uint32_t tmp; 2533 uint8_t tx; 2534 2535 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2536 if (antenna == 1) 2537 tx |= RT2560_BBP_ANTA; 2538 else if (antenna == 2) 2539 tx |= RT2560_BBP_ANTB; 2540 else 2541 tx |= RT2560_BBP_DIVERSITY; 2542 2543 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2544 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2545 sc->rf_rev == RT2560_RF_5222) 2546 tx |= RT2560_BBP_FLIPIQ; 2547 2548 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2549 2550 /* update values for CCK and OFDM in BBPCSR1 */ 2551 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2552 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2553 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2554} 2555 2556static void 2557rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2558{ 2559 uint8_t rx; 2560 2561 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2562 if (antenna == 1) 2563 rx |= RT2560_BBP_ANTA; 2564 else if (antenna == 2) 2565 rx |= RT2560_BBP_ANTB; 2566 else 2567 rx |= RT2560_BBP_DIVERSITY; 2568 2569 /* need to force no I/Q flip for RF 2525e and 2526 */ 2570 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2571 rx &= ~RT2560_BBP_FLIPIQ; 2572 2573 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2574} 2575 2576static void 2577rt2560_init_locked(struct rt2560_softc *sc) 2578{ 2579 struct ieee80211com *ic = &sc->sc_ic; 2580 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2581 uint32_t tmp; 2582 int i; 2583 2584 RAL_LOCK_ASSERT(sc); 2585 2586 rt2560_stop_locked(sc); 2587 2588 /* setup tx rings */ 2589 tmp = RT2560_PRIO_RING_COUNT << 24 | 2590 RT2560_ATIM_RING_COUNT << 16 | 2591 RT2560_TX_RING_COUNT << 8 | 2592 RT2560_TX_DESC_SIZE; 2593 2594 /* rings must be initialized in this exact order */ 2595 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2596 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2597 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2598 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2599 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2600 2601 /* setup rx ring */ 2602 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2603 2604 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2605 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2606 2607 /* initialize MAC registers to default values */ 2608 for (i = 0; i < nitems(rt2560_def_mac); i++) 2609 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2610 2611 rt2560_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr); 2612 2613 /* set basic rate set (will be updated later) */ 2614 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2615 2616 rt2560_update_slot(ic); 2617 rt2560_update_plcp(sc); 2618 rt2560_update_led(sc, 0, 0); 2619 2620 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2621 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2622 2623 if (rt2560_bbp_init(sc) != 0) { 2624 rt2560_stop_locked(sc); 2625 return; 2626 } 2627 2628 rt2560_set_txantenna(sc, sc->tx_ant); 2629 rt2560_set_rxantenna(sc, sc->rx_ant); 2630 2631 /* set default BSS channel */ 2632 rt2560_set_chan(sc, ic->ic_curchan); 2633 2634 /* kick Rx */ 2635 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2636 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2637 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2638 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2639 ic->ic_opmode != IEEE80211_M_MBSS) 2640 tmp |= RT2560_DROP_TODS; 2641 if (ic->ic_promisc == 0) 2642 tmp |= RT2560_DROP_NOT_TO_ME; 2643 } 2644 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2645 2646 /* clear old FCS and Rx FIFO errors */ 2647 RAL_READ(sc, RT2560_CNT0); 2648 RAL_READ(sc, RT2560_CNT4); 2649 2650 /* clear any pending interrupts */ 2651 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2652 2653 /* enable interrupts */ 2654 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2655 2656 sc->sc_flags |= RT2560_F_RUNNING; 2657 2658 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2659} 2660 2661static void 2662rt2560_init(void *priv) 2663{ 2664 struct rt2560_softc *sc = priv; 2665 struct ieee80211com *ic = &sc->sc_ic; 2666 2667 RAL_LOCK(sc); 2668 rt2560_init_locked(sc); 2669 RAL_UNLOCK(sc); 2670 2671 if (sc->sc_flags & RT2560_F_RUNNING) 2672 ieee80211_start_all(ic); /* start all vap's */ 2673} 2674 2675static void 2676rt2560_stop_locked(struct rt2560_softc *sc) 2677{ 2678 volatile int *flags = &sc->sc_flags; 2679 2680 RAL_LOCK_ASSERT(sc); 2681 2682 while (*flags & RT2560_F_INPUT_RUNNING) 2683 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2684 2685 callout_stop(&sc->watchdog_ch); 2686 sc->sc_tx_timer = 0; 2687 2688 if (sc->sc_flags & RT2560_F_RUNNING) { 2689 sc->sc_flags &= ~RT2560_F_RUNNING; 2690 2691 /* abort Tx */ 2692 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2693 2694 /* disable Rx */ 2695 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2696 2697 /* reset ASIC (imply reset BBP) */ 2698 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2699 RAL_WRITE(sc, RT2560_CSR1, 0); 2700 2701 /* disable interrupts */ 2702 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2703 2704 /* reset Tx and Rx rings */ 2705 rt2560_reset_tx_ring(sc, &sc->txq); 2706 rt2560_reset_tx_ring(sc, &sc->atimq); 2707 rt2560_reset_tx_ring(sc, &sc->prioq); 2708 rt2560_reset_tx_ring(sc, &sc->bcnq); 2709 rt2560_reset_rx_ring(sc, &sc->rxq); 2710 } 2711} 2712 2713void 2714rt2560_stop(void *arg) 2715{ 2716 struct rt2560_softc *sc = arg; 2717 2718 RAL_LOCK(sc); 2719 rt2560_stop_locked(sc); 2720 RAL_UNLOCK(sc); 2721} 2722 2723static int 2724rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2725 const struct ieee80211_bpf_params *params) 2726{ 2727 struct ieee80211com *ic = ni->ni_ic; 2728 struct rt2560_softc *sc = ic->ic_softc; 2729 2730 RAL_LOCK(sc); 2731 2732 /* prevent management frames from being sent if we're not ready */ 2733 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 2734 RAL_UNLOCK(sc); 2735 m_freem(m); 2736 return ENETDOWN; 2737 } 2738 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2739 RAL_UNLOCK(sc); 2740 m_freem(m); 2741 return ENOBUFS; /* XXX */ 2742 } 2743 2744 if (params == NULL) { 2745 /* 2746 * Legacy path; interpret frame contents to decide 2747 * precisely how to send the frame. 2748 */ 2749 if (rt2560_tx_mgt(sc, m, ni) != 0) 2750 goto bad; 2751 } else { 2752 /* 2753 * Caller supplied explicit parameters to use in 2754 * sending the frame. 2755 */ 2756 if (rt2560_tx_raw(sc, m, ni, params)) 2757 goto bad; 2758 } 2759 sc->sc_tx_timer = 5; 2760 2761 RAL_UNLOCK(sc); 2762 2763 return 0; 2764bad: 2765 RAL_UNLOCK(sc); 2766 return EIO; /* XXX */ 2767} 2768