rt2560.c revision 287197
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 287197 2015-08-27 08:56:39Z glebius $ */ 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 287197 2015-08-27 08:56:39Z glebius $"); 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_set_channel(struct ieee80211com *); 121static void rt2560_setup_tx_desc(struct rt2560_softc *, 122 struct rt2560_tx_desc *, uint32_t, int, int, int, 123 bus_addr_t); 124static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 125 struct ieee80211_node *); 126static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 129 struct ieee80211_node *); 130static int rt2560_transmit(struct ieee80211com *, struct mbuf *); 131static void rt2560_start(struct rt2560_softc *); 132static void rt2560_watchdog(void *); 133static void rt2560_parent(struct ieee80211com *); 134static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 135 uint8_t); 136static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 137static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 138 uint32_t); 139static void rt2560_set_chan(struct rt2560_softc *, 140 struct ieee80211_channel *); 141#if 0 142static void rt2560_disable_rf_tune(struct rt2560_softc *); 143#endif 144static void rt2560_enable_tsf_sync(struct rt2560_softc *); 145static void rt2560_enable_tsf(struct rt2560_softc *); 146static void rt2560_update_plcp(struct rt2560_softc *); 147static void rt2560_update_slot(struct ieee80211com *); 148static void rt2560_set_basicrates(struct rt2560_softc *, 149 const struct ieee80211_rateset *); 150static void rt2560_update_led(struct rt2560_softc *, int, int); 151static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 152static void rt2560_set_macaddr(struct rt2560_softc *, 153 const uint8_t *); 154static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 155static void rt2560_update_promisc(struct ieee80211com *); 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 = &sc->sc_ic; 202 uint8_t bands; 203 int error; 204 205 sc->sc_dev = dev; 206 207 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 208 MTX_DEF | MTX_RECURSE); 209 210 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 211 mbufq_init(&sc->sc_snd, ifqmaxlen); 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 /* retrieve MAC address */ 256 rt2560_get_macaddr(sc, ic->ic_macaddr); 257 258 ic->ic_softc = sc; 259 ic->ic_name = device_get_nameunit(dev); 260 ic->ic_opmode = IEEE80211_M_STA; 261 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 262 263 /* set device capabilities */ 264 ic->ic_caps = 265 IEEE80211_C_STA /* station mode */ 266 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 267 | IEEE80211_C_HOSTAP /* hostap mode */ 268 | IEEE80211_C_MONITOR /* monitor mode */ 269 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 270 | IEEE80211_C_WDS /* 4-address traffic works */ 271 | IEEE80211_C_MBSS /* mesh point link mode */ 272 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 273 | IEEE80211_C_SHSLOT /* short slot time supported */ 274 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 275 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 276#ifdef notyet 277 | IEEE80211_C_TXFRAG /* handle tx frags */ 278#endif 279 ; 280 281 bands = 0; 282 setbit(&bands, IEEE80211_MODE_11B); 283 setbit(&bands, IEEE80211_MODE_11G); 284 if (sc->rf_rev == RT2560_RF_5222) 285 setbit(&bands, IEEE80211_MODE_11A); 286 ieee80211_init_channels(ic, NULL, &bands); 287 288 ieee80211_ifattach(ic); 289 ic->ic_raw_xmit = rt2560_raw_xmit; 290 ic->ic_updateslot = rt2560_update_slot; 291 ic->ic_update_promisc = rt2560_update_promisc; 292 ic->ic_scan_start = rt2560_scan_start; 293 ic->ic_scan_end = rt2560_scan_end; 294 ic->ic_set_channel = rt2560_set_channel; 295 296 ic->ic_vap_create = rt2560_vap_create; 297 ic->ic_vap_delete = rt2560_vap_delete; 298 ic->ic_parent = rt2560_parent; 299 ic->ic_transmit = rt2560_transmit; 300 301 ieee80211_radiotap_attach(ic, 302 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 303 RT2560_TX_RADIOTAP_PRESENT, 304 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 305 RT2560_RX_RADIOTAP_PRESENT); 306 307 /* 308 * Add a few sysctl knobs. 309 */ 310#ifdef RAL_DEBUG 311 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 312 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 313 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 314#endif 315 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 316 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 317 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 318 319 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 320 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 321 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 322 323 if (bootverbose) 324 ieee80211_announce(ic); 325 326 return 0; 327 328fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 329fail4: rt2560_free_tx_ring(sc, &sc->prioq); 330fail3: rt2560_free_tx_ring(sc, &sc->atimq); 331fail2: rt2560_free_tx_ring(sc, &sc->txq); 332fail1: mtx_destroy(&sc->sc_mtx); 333 334 return ENXIO; 335} 336 337int 338rt2560_detach(void *xsc) 339{ 340 struct rt2560_softc *sc = xsc; 341 struct ieee80211com *ic = &sc->sc_ic; 342 343 rt2560_stop(sc); 344 345 ieee80211_ifdetach(ic); 346 mbufq_drain(&sc->sc_snd); 347 348 rt2560_free_tx_ring(sc, &sc->txq); 349 rt2560_free_tx_ring(sc, &sc->atimq); 350 rt2560_free_tx_ring(sc, &sc->prioq); 351 rt2560_free_tx_ring(sc, &sc->bcnq); 352 rt2560_free_rx_ring(sc, &sc->rxq); 353 354 mtx_destroy(&sc->sc_mtx); 355 356 return 0; 357} 358 359static struct ieee80211vap * 360rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 361 enum ieee80211_opmode opmode, int flags, 362 const uint8_t bssid[IEEE80211_ADDR_LEN], 363 const uint8_t mac[IEEE80211_ADDR_LEN]) 364{ 365 struct rt2560_softc *sc = ic->ic_softc; 366 struct rt2560_vap *rvp; 367 struct ieee80211vap *vap; 368 369 switch (opmode) { 370 case IEEE80211_M_STA: 371 case IEEE80211_M_IBSS: 372 case IEEE80211_M_AHDEMO: 373 case IEEE80211_M_MONITOR: 374 case IEEE80211_M_HOSTAP: 375 case IEEE80211_M_MBSS: 376 /* XXXRP: TBD */ 377 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 378 device_printf(sc->sc_dev, "only 1 vap supported\n"); 379 return NULL; 380 } 381 if (opmode == IEEE80211_M_STA) 382 flags |= IEEE80211_CLONE_NOBEACONS; 383 break; 384 case IEEE80211_M_WDS: 385 if (TAILQ_EMPTY(&ic->ic_vaps) || 386 ic->ic_opmode != IEEE80211_M_HOSTAP) { 387 device_printf(sc->sc_dev, 388 "wds only supported in ap mode\n"); 389 return NULL; 390 } 391 /* 392 * Silently remove any request for a unique 393 * bssid; WDS vap's always share the local 394 * mac address. 395 */ 396 flags &= ~IEEE80211_CLONE_BSSID; 397 break; 398 default: 399 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 400 return NULL; 401 } 402 rvp = malloc(sizeof(struct rt2560_vap), M_80211_VAP, M_WAITOK | M_ZERO); 403 vap = &rvp->ral_vap; 404 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 405 406 /* override state transition machine */ 407 rvp->ral_newstate = vap->iv_newstate; 408 vap->iv_newstate = rt2560_newstate; 409 vap->iv_update_beacon = rt2560_beacon_update; 410 411 ieee80211_ratectl_init(vap); 412 /* complete setup */ 413 ieee80211_vap_attach(vap, ieee80211_media_change, 414 ieee80211_media_status, mac); 415 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 416 ic->ic_opmode = opmode; 417 return vap; 418} 419 420static void 421rt2560_vap_delete(struct ieee80211vap *vap) 422{ 423 struct rt2560_vap *rvp = RT2560_VAP(vap); 424 425 ieee80211_ratectl_deinit(vap); 426 ieee80211_vap_detach(vap); 427 free(rvp, M_80211_VAP); 428} 429 430void 431rt2560_resume(void *xsc) 432{ 433 struct rt2560_softc *sc = xsc; 434 435 if (sc->sc_ic.ic_nrunning > 0) 436 rt2560_init(sc); 437} 438 439static void 440rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 441{ 442 if (error != 0) 443 return; 444 445 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 446 447 *(bus_addr_t *)arg = segs[0].ds_addr; 448} 449 450static int 451rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 452 int count) 453{ 454 int i, error; 455 456 ring->count = count; 457 ring->queued = 0; 458 ring->cur = ring->next = 0; 459 ring->cur_encrypt = ring->next_encrypt = 0; 460 461 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 462 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 463 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 464 0, NULL, NULL, &ring->desc_dmat); 465 if (error != 0) { 466 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 467 goto fail; 468 } 469 470 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 471 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 472 if (error != 0) { 473 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 474 goto fail; 475 } 476 477 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 478 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 479 0); 480 if (error != 0) { 481 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 482 goto fail; 483 } 484 485 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 486 M_NOWAIT | M_ZERO); 487 if (ring->data == NULL) { 488 device_printf(sc->sc_dev, "could not allocate soft data\n"); 489 error = ENOMEM; 490 goto fail; 491 } 492 493 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 494 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 495 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 496 &ring->data_dmat); 497 if (error != 0) { 498 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 499 goto fail; 500 } 501 502 for (i = 0; i < count; i++) { 503 error = bus_dmamap_create(ring->data_dmat, 0, 504 &ring->data[i].map); 505 if (error != 0) { 506 device_printf(sc->sc_dev, "could not create DMA map\n"); 507 goto fail; 508 } 509 } 510 511 return 0; 512 513fail: rt2560_free_tx_ring(sc, ring); 514 return error; 515} 516 517static void 518rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 519{ 520 struct rt2560_tx_desc *desc; 521 struct rt2560_tx_data *data; 522 int i; 523 524 for (i = 0; i < ring->count; i++) { 525 desc = &ring->desc[i]; 526 data = &ring->data[i]; 527 528 if (data->m != NULL) { 529 bus_dmamap_sync(ring->data_dmat, data->map, 530 BUS_DMASYNC_POSTWRITE); 531 bus_dmamap_unload(ring->data_dmat, data->map); 532 m_freem(data->m); 533 data->m = NULL; 534 } 535 536 if (data->ni != NULL) { 537 ieee80211_free_node(data->ni); 538 data->ni = NULL; 539 } 540 541 desc->flags = 0; 542 } 543 544 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 545 546 ring->queued = 0; 547 ring->cur = ring->next = 0; 548 ring->cur_encrypt = ring->next_encrypt = 0; 549} 550 551static void 552rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 553{ 554 struct rt2560_tx_data *data; 555 int i; 556 557 if (ring->desc != NULL) { 558 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 559 BUS_DMASYNC_POSTWRITE); 560 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 561 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 562 } 563 564 if (ring->desc_dmat != NULL) 565 bus_dma_tag_destroy(ring->desc_dmat); 566 567 if (ring->data != NULL) { 568 for (i = 0; i < ring->count; i++) { 569 data = &ring->data[i]; 570 571 if (data->m != NULL) { 572 bus_dmamap_sync(ring->data_dmat, data->map, 573 BUS_DMASYNC_POSTWRITE); 574 bus_dmamap_unload(ring->data_dmat, data->map); 575 m_freem(data->m); 576 } 577 578 if (data->ni != NULL) 579 ieee80211_free_node(data->ni); 580 581 if (data->map != NULL) 582 bus_dmamap_destroy(ring->data_dmat, data->map); 583 } 584 585 free(ring->data, M_DEVBUF); 586 } 587 588 if (ring->data_dmat != NULL) 589 bus_dma_tag_destroy(ring->data_dmat); 590} 591 592static int 593rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 594 int count) 595{ 596 struct rt2560_rx_desc *desc; 597 struct rt2560_rx_data *data; 598 bus_addr_t physaddr; 599 int i, error; 600 601 ring->count = count; 602 ring->cur = ring->next = 0; 603 ring->cur_decrypt = 0; 604 605 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 606 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 607 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 608 0, NULL, NULL, &ring->desc_dmat); 609 if (error != 0) { 610 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 611 goto fail; 612 } 613 614 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 615 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 616 if (error != 0) { 617 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 618 goto fail; 619 } 620 621 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 622 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 623 0); 624 if (error != 0) { 625 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 626 goto fail; 627 } 628 629 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 630 M_NOWAIT | M_ZERO); 631 if (ring->data == NULL) { 632 device_printf(sc->sc_dev, "could not allocate soft data\n"); 633 error = ENOMEM; 634 goto fail; 635 } 636 637 /* 638 * Pre-allocate Rx buffers and populate Rx ring. 639 */ 640 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 641 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 642 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 643 if (error != 0) { 644 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 645 goto fail; 646 } 647 648 for (i = 0; i < count; i++) { 649 desc = &sc->rxq.desc[i]; 650 data = &sc->rxq.data[i]; 651 652 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not create DMA map\n"); 655 goto fail; 656 } 657 658 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 659 if (data->m == NULL) { 660 device_printf(sc->sc_dev, 661 "could not allocate rx mbuf\n"); 662 error = ENOMEM; 663 goto fail; 664 } 665 666 error = bus_dmamap_load(ring->data_dmat, data->map, 667 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 668 &physaddr, 0); 669 if (error != 0) { 670 device_printf(sc->sc_dev, 671 "could not load rx buf DMA map"); 672 goto fail; 673 } 674 675 desc->flags = htole32(RT2560_RX_BUSY); 676 desc->physaddr = htole32(physaddr); 677 } 678 679 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 680 681 return 0; 682 683fail: rt2560_free_rx_ring(sc, ring); 684 return error; 685} 686 687static void 688rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 689{ 690 int i; 691 692 for (i = 0; i < ring->count; i++) { 693 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 694 ring->data[i].drop = 0; 695 } 696 697 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 698 699 ring->cur = ring->next = 0; 700 ring->cur_decrypt = 0; 701} 702 703static void 704rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 705{ 706 struct rt2560_rx_data *data; 707 int i; 708 709 if (ring->desc != NULL) { 710 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 711 BUS_DMASYNC_POSTWRITE); 712 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 713 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 714 } 715 716 if (ring->desc_dmat != NULL) 717 bus_dma_tag_destroy(ring->desc_dmat); 718 719 if (ring->data != NULL) { 720 for (i = 0; i < ring->count; i++) { 721 data = &ring->data[i]; 722 723 if (data->m != NULL) { 724 bus_dmamap_sync(ring->data_dmat, data->map, 725 BUS_DMASYNC_POSTREAD); 726 bus_dmamap_unload(ring->data_dmat, data->map); 727 m_freem(data->m); 728 } 729 730 if (data->map != NULL) 731 bus_dmamap_destroy(ring->data_dmat, data->map); 732 } 733 734 free(ring->data, M_DEVBUF); 735 } 736 737 if (ring->data_dmat != NULL) 738 bus_dma_tag_destroy(ring->data_dmat); 739} 740 741static int 742rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 743{ 744 struct rt2560_vap *rvp = RT2560_VAP(vap); 745 struct rt2560_softc *sc = vap->iv_ic->ic_softc; 746 int error; 747 748 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 749 /* abort TSF synchronization */ 750 RAL_WRITE(sc, RT2560_CSR14, 0); 751 752 /* turn association led off */ 753 rt2560_update_led(sc, 0, 0); 754 } 755 756 error = rvp->ral_newstate(vap, nstate, arg); 757 758 if (error == 0 && nstate == IEEE80211_S_RUN) { 759 struct ieee80211_node *ni = vap->iv_bss; 760 struct mbuf *m; 761 762 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 763 rt2560_update_plcp(sc); 764 rt2560_set_basicrates(sc, &ni->ni_rates); 765 rt2560_set_bssid(sc, ni->ni_bssid); 766 } 767 768 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 769 vap->iv_opmode == IEEE80211_M_IBSS || 770 vap->iv_opmode == IEEE80211_M_MBSS) { 771 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 772 if (m == NULL) { 773 device_printf(sc->sc_dev, 774 "could not allocate beacon\n"); 775 return ENOBUFS; 776 } 777 ieee80211_ref_node(ni); 778 error = rt2560_tx_bcn(sc, m, ni); 779 if (error != 0) 780 return error; 781 } 782 783 /* turn assocation led on */ 784 rt2560_update_led(sc, 1, 0); 785 786 if (vap->iv_opmode != IEEE80211_M_MONITOR) 787 rt2560_enable_tsf_sync(sc); 788 else 789 rt2560_enable_tsf(sc); 790 } 791 return error; 792} 793 794/* 795 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 796 * 93C66). 797 */ 798static uint16_t 799rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 800{ 801 uint32_t tmp; 802 uint16_t val; 803 int n; 804 805 /* clock C once before the first command */ 806 RT2560_EEPROM_CTL(sc, 0); 807 808 RT2560_EEPROM_CTL(sc, RT2560_S); 809 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 810 RT2560_EEPROM_CTL(sc, RT2560_S); 811 812 /* write start bit (1) */ 813 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 814 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 815 816 /* write READ opcode (10) */ 817 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 818 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 819 RT2560_EEPROM_CTL(sc, RT2560_S); 820 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 821 822 /* write address (A5-A0 or A7-A0) */ 823 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 824 for (; n >= 0; n--) { 825 RT2560_EEPROM_CTL(sc, RT2560_S | 826 (((addr >> n) & 1) << RT2560_SHIFT_D)); 827 RT2560_EEPROM_CTL(sc, RT2560_S | 828 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 829 } 830 831 RT2560_EEPROM_CTL(sc, RT2560_S); 832 833 /* read data Q15-Q0 */ 834 val = 0; 835 for (n = 15; n >= 0; n--) { 836 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 837 tmp = RAL_READ(sc, RT2560_CSR21); 838 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 839 RT2560_EEPROM_CTL(sc, RT2560_S); 840 } 841 842 RT2560_EEPROM_CTL(sc, 0); 843 844 /* clear Chip Select and clock C */ 845 RT2560_EEPROM_CTL(sc, RT2560_S); 846 RT2560_EEPROM_CTL(sc, 0); 847 RT2560_EEPROM_CTL(sc, RT2560_C); 848 849 return val; 850} 851 852/* 853 * Some frames were processed by the hardware cipher engine and are ready for 854 * transmission. 855 */ 856static void 857rt2560_encryption_intr(struct rt2560_softc *sc) 858{ 859 struct rt2560_tx_desc *desc; 860 int hw; 861 862 /* retrieve last descriptor index processed by cipher engine */ 863 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 864 hw /= RT2560_TX_DESC_SIZE; 865 866 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 867 BUS_DMASYNC_POSTREAD); 868 869 while (sc->txq.next_encrypt != hw) { 870 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 871 printf("hw encrypt %d, cur_encrypt %d\n", hw, 872 sc->txq.cur_encrypt); 873 break; 874 } 875 876 desc = &sc->txq.desc[sc->txq.next_encrypt]; 877 878 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 879 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 880 break; 881 882 /* for TKIP, swap eiv field to fix a bug in ASIC */ 883 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 884 RT2560_TX_CIPHER_TKIP) 885 desc->eiv = bswap32(desc->eiv); 886 887 /* mark the frame ready for transmission */ 888 desc->flags |= htole32(RT2560_TX_VALID); 889 desc->flags |= htole32(RT2560_TX_BUSY); 890 891 DPRINTFN(sc, 15, "encryption done idx=%u\n", 892 sc->txq.next_encrypt); 893 894 sc->txq.next_encrypt = 895 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 896 } 897 898 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 899 BUS_DMASYNC_PREWRITE); 900 901 /* kick Tx */ 902 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 903} 904 905static void 906rt2560_tx_intr(struct rt2560_softc *sc) 907{ 908 struct rt2560_tx_desc *desc; 909 struct rt2560_tx_data *data; 910 struct mbuf *m; 911 struct ieee80211vap *vap; 912 struct ieee80211_node *ni; 913 uint32_t flags; 914 int retrycnt, status; 915 916 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 917 BUS_DMASYNC_POSTREAD); 918 919 for (;;) { 920 desc = &sc->txq.desc[sc->txq.next]; 921 data = &sc->txq.data[sc->txq.next]; 922 923 flags = le32toh(desc->flags); 924 if ((flags & RT2560_TX_BUSY) || 925 (flags & RT2560_TX_CIPHER_BUSY) || 926 !(flags & RT2560_TX_VALID)) 927 break; 928 929 m = data->m; 930 ni = data->ni; 931 vap = ni->ni_vap; 932 933 switch (flags & RT2560_TX_RESULT_MASK) { 934 case RT2560_TX_SUCCESS: 935 retrycnt = 0; 936 937 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 938 if (data->rix != IEEE80211_FIXED_RATE_NONE) 939 ieee80211_ratectl_tx_complete(vap, ni, 940 IEEE80211_RATECTL_TX_SUCCESS, 941 &retrycnt, NULL); 942 status = 0; 943 break; 944 945 case RT2560_TX_SUCCESS_RETRY: 946 retrycnt = RT2560_TX_RETRYCNT(flags); 947 948 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 949 retrycnt); 950 if (data->rix != IEEE80211_FIXED_RATE_NONE) 951 ieee80211_ratectl_tx_complete(vap, ni, 952 IEEE80211_RATECTL_TX_SUCCESS, 953 &retrycnt, NULL); 954 status = 0; 955 break; 956 957 case RT2560_TX_FAIL_RETRY: 958 retrycnt = RT2560_TX_RETRYCNT(flags); 959 960 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 961 retrycnt); 962 if (data->rix != IEEE80211_FIXED_RATE_NONE) 963 ieee80211_ratectl_tx_complete(vap, ni, 964 IEEE80211_RATECTL_TX_FAILURE, 965 &retrycnt, NULL); 966 status = 1; 967 break; 968 969 case RT2560_TX_FAIL_INVALID: 970 case RT2560_TX_FAIL_OTHER: 971 default: 972 device_printf(sc->sc_dev, "sending data frame failed " 973 "0x%08x\n", flags); 974 status = 1; 975 } 976 977 bus_dmamap_sync(sc->txq.data_dmat, data->map, 978 BUS_DMASYNC_POSTWRITE); 979 bus_dmamap_unload(sc->txq.data_dmat, data->map); 980 981 ieee80211_tx_complete(ni, m, status); 982 data->ni = NULL; 983 data->m = NULL; 984 985 /* descriptor is no longer valid */ 986 desc->flags &= ~htole32(RT2560_TX_VALID); 987 988 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 989 990 sc->txq.queued--; 991 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 992 } 993 994 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 995 BUS_DMASYNC_PREWRITE); 996 997 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 998 sc->sc_tx_timer = 0; 999 1000 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) 1001 rt2560_start(sc); 1002} 1003 1004static void 1005rt2560_prio_intr(struct rt2560_softc *sc) 1006{ 1007 struct rt2560_tx_desc *desc; 1008 struct rt2560_tx_data *data; 1009 struct ieee80211_node *ni; 1010 struct mbuf *m; 1011 int flags; 1012 1013 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1014 BUS_DMASYNC_POSTREAD); 1015 1016 for (;;) { 1017 desc = &sc->prioq.desc[sc->prioq.next]; 1018 data = &sc->prioq.data[sc->prioq.next]; 1019 1020 flags = le32toh(desc->flags); 1021 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1022 break; 1023 1024 switch (flags & RT2560_TX_RESULT_MASK) { 1025 case RT2560_TX_SUCCESS: 1026 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1027 break; 1028 1029 case RT2560_TX_SUCCESS_RETRY: 1030 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1031 (flags >> 5) & 0x7); 1032 break; 1033 1034 case RT2560_TX_FAIL_RETRY: 1035 DPRINTFN(sc, 9, "%s\n", 1036 "sending mgt frame failed (too much retries)"); 1037 break; 1038 1039 case RT2560_TX_FAIL_INVALID: 1040 case RT2560_TX_FAIL_OTHER: 1041 default: 1042 device_printf(sc->sc_dev, "sending mgt frame failed " 1043 "0x%08x\n", flags); 1044 break; 1045 } 1046 1047 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1048 BUS_DMASYNC_POSTWRITE); 1049 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1050 1051 m = data->m; 1052 data->m = NULL; 1053 ni = data->ni; 1054 data->ni = NULL; 1055 1056 /* descriptor is no longer valid */ 1057 desc->flags &= ~htole32(RT2560_TX_VALID); 1058 1059 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1060 1061 sc->prioq.queued--; 1062 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1063 1064 if (m->m_flags & M_TXCB) 1065 ieee80211_process_callback(ni, m, 1066 (flags & RT2560_TX_RESULT_MASK) &~ 1067 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1068 m_freem(m); 1069 ieee80211_free_node(ni); 1070 } 1071 1072 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1073 BUS_DMASYNC_PREWRITE); 1074 1075 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1076 sc->sc_tx_timer = 0; 1077 1078 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) 1079 rt2560_start(sc); 1080} 1081 1082/* 1083 * Some frames were processed by the hardware cipher engine and are ready for 1084 * handoff to the IEEE802.11 layer. 1085 */ 1086static void 1087rt2560_decryption_intr(struct rt2560_softc *sc) 1088{ 1089 struct ieee80211com *ic = &sc->sc_ic; 1090 struct rt2560_rx_desc *desc; 1091 struct rt2560_rx_data *data; 1092 bus_addr_t physaddr; 1093 struct ieee80211_frame *wh; 1094 struct ieee80211_node *ni; 1095 struct mbuf *mnew, *m; 1096 int hw, error; 1097 int8_t rssi, nf; 1098 1099 /* retrieve last decriptor index processed by cipher engine */ 1100 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1101 hw /= RT2560_RX_DESC_SIZE; 1102 1103 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1104 BUS_DMASYNC_POSTREAD); 1105 1106 for (; sc->rxq.cur_decrypt != hw;) { 1107 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1108 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1109 1110 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1111 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1112 break; 1113 1114 if (data->drop) { 1115 counter_u64_add(ic->ic_ierrors, 1); 1116 goto skip; 1117 } 1118 1119 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1120 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1121 counter_u64_add(ic->ic_ierrors, 1); 1122 goto skip; 1123 } 1124 1125 /* 1126 * Try to allocate a new mbuf for this ring element and load it 1127 * before processing the current mbuf. If the ring element 1128 * cannot be loaded, drop the received packet and reuse the old 1129 * mbuf. In the unlikely case that the old mbuf can't be 1130 * reloaded either, explicitly panic. 1131 */ 1132 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1133 if (mnew == NULL) { 1134 counter_u64_add(ic->ic_ierrors, 1); 1135 goto skip; 1136 } 1137 1138 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1139 BUS_DMASYNC_POSTREAD); 1140 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1141 1142 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1143 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1144 &physaddr, 0); 1145 if (error != 0) { 1146 m_freem(mnew); 1147 1148 /* try to reload the old mbuf */ 1149 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1150 mtod(data->m, void *), MCLBYTES, 1151 rt2560_dma_map_addr, &physaddr, 0); 1152 if (error != 0) { 1153 /* very unlikely that it will fail... */ 1154 panic("%s: could not load old rx mbuf", 1155 device_get_name(sc->sc_dev)); 1156 } 1157 counter_u64_add(ic->ic_ierrors, 1); 1158 goto skip; 1159 } 1160 1161 /* 1162 * New mbuf successfully loaded, update Rx ring and continue 1163 * processing. 1164 */ 1165 m = data->m; 1166 data->m = mnew; 1167 desc->physaddr = htole32(physaddr); 1168 1169 /* finalize mbuf */ 1170 m->m_pkthdr.len = m->m_len = 1171 (le32toh(desc->flags) >> 16) & 0xfff; 1172 1173 rssi = RT2560_RSSI(sc, desc->rssi); 1174 nf = RT2560_NOISE_FLOOR; 1175 if (ieee80211_radiotap_active(ic)) { 1176 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1177 uint32_t tsf_lo, tsf_hi; 1178 1179 /* get timestamp (low and high 32 bits) */ 1180 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1181 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1182 1183 tap->wr_tsf = 1184 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1185 tap->wr_flags = 0; 1186 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1187 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1188 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1189 tap->wr_antenna = sc->rx_ant; 1190 tap->wr_antsignal = nf + rssi; 1191 tap->wr_antnoise = nf; 1192 } 1193 1194 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1195 RAL_UNLOCK(sc); 1196 wh = mtod(m, struct ieee80211_frame *); 1197 ni = ieee80211_find_rxnode(ic, 1198 (struct ieee80211_frame_min *)wh); 1199 if (ni != NULL) { 1200 (void) ieee80211_input(ni, m, rssi, nf); 1201 ieee80211_free_node(ni); 1202 } else 1203 (void) ieee80211_input_all(ic, m, rssi, nf); 1204 1205 RAL_LOCK(sc); 1206 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1207skip: desc->flags = htole32(RT2560_RX_BUSY); 1208 1209 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1210 1211 sc->rxq.cur_decrypt = 1212 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1213 } 1214 1215 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1216 BUS_DMASYNC_PREWRITE); 1217} 1218 1219/* 1220 * Some frames were received. Pass them to the hardware cipher engine before 1221 * sending them to the 802.11 layer. 1222 */ 1223static void 1224rt2560_rx_intr(struct rt2560_softc *sc) 1225{ 1226 struct rt2560_rx_desc *desc; 1227 struct rt2560_rx_data *data; 1228 1229 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1230 BUS_DMASYNC_POSTREAD); 1231 1232 for (;;) { 1233 desc = &sc->rxq.desc[sc->rxq.cur]; 1234 data = &sc->rxq.data[sc->rxq.cur]; 1235 1236 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1237 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1238 break; 1239 1240 data->drop = 0; 1241 1242 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1243 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1244 /* 1245 * This should not happen since we did not request 1246 * to receive those frames when we filled RXCSR0. 1247 */ 1248 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1249 le32toh(desc->flags)); 1250 data->drop = 1; 1251 } 1252 1253 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1254 DPRINTFN(sc, 5, "%s\n", "bad length"); 1255 data->drop = 1; 1256 } 1257 1258 /* mark the frame for decryption */ 1259 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1260 1261 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1262 1263 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1264 } 1265 1266 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1267 BUS_DMASYNC_PREWRITE); 1268 1269 /* kick decrypt */ 1270 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1271} 1272 1273static void 1274rt2560_beacon_update(struct ieee80211vap *vap, int item) 1275{ 1276 struct rt2560_vap *rvp = RT2560_VAP(vap); 1277 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1278 1279 setbit(bo->bo_flags, item); 1280} 1281 1282/* 1283 * This function is called periodically in IBSS mode when a new beacon must be 1284 * sent out. 1285 */ 1286static void 1287rt2560_beacon_expire(struct rt2560_softc *sc) 1288{ 1289 struct ieee80211com *ic = &sc->sc_ic; 1290 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1291 struct rt2560_vap *rvp = RT2560_VAP(vap); 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, &rvp->ral_bo, 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 = (16 * len + rate - 1) / 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_set_channel(struct ieee80211com *ic) 2148{ 2149 struct rt2560_softc *sc = ic->ic_softc; 2150 2151 RAL_LOCK(sc); 2152 rt2560_set_chan(sc, ic->ic_curchan); 2153 RAL_UNLOCK(sc); 2154 2155} 2156 2157#if 0 2158/* 2159 * Disable RF auto-tuning. 2160 */ 2161static void 2162rt2560_disable_rf_tune(struct rt2560_softc *sc) 2163{ 2164 uint32_t tmp; 2165 2166 if (sc->rf_rev != RT2560_RF_2523) { 2167 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2168 rt2560_rf_write(sc, RAL_RF1, tmp); 2169 } 2170 2171 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2172 rt2560_rf_write(sc, RAL_RF3, tmp); 2173 2174 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2175} 2176#endif 2177 2178/* 2179 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2180 * synchronization. 2181 */ 2182static void 2183rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2184{ 2185 struct ieee80211com *ic = &sc->sc_ic; 2186 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2187 uint16_t logcwmin, preload; 2188 uint32_t tmp; 2189 2190 /* first, disable TSF synchronization */ 2191 RAL_WRITE(sc, RT2560_CSR14, 0); 2192 2193 tmp = 16 * vap->iv_bss->ni_intval; 2194 RAL_WRITE(sc, RT2560_CSR12, tmp); 2195 2196 RAL_WRITE(sc, RT2560_CSR13, 0); 2197 2198 logcwmin = 5; 2199 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2200 tmp = logcwmin << 16 | preload; 2201 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2202 2203 /* finally, enable TSF synchronization */ 2204 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2205 if (ic->ic_opmode == IEEE80211_M_STA) 2206 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2207 else 2208 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2209 RT2560_ENABLE_BEACON_GENERATOR; 2210 RAL_WRITE(sc, RT2560_CSR14, tmp); 2211 2212 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2213} 2214 2215static void 2216rt2560_enable_tsf(struct rt2560_softc *sc) 2217{ 2218 RAL_WRITE(sc, RT2560_CSR14, 0); 2219 RAL_WRITE(sc, RT2560_CSR14, 2220 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2221} 2222 2223static void 2224rt2560_update_plcp(struct rt2560_softc *sc) 2225{ 2226 struct ieee80211com *ic = &sc->sc_ic; 2227 2228 /* no short preamble for 1Mbps */ 2229 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2230 2231 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2232 /* values taken from the reference driver */ 2233 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2234 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2235 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2236 } else { 2237 /* same values as above or'ed 0x8 */ 2238 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2239 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2240 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2241 } 2242 2243 DPRINTF(sc, "updating PLCP for %s preamble\n", 2244 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2245} 2246 2247/* 2248 * This function can be called by ieee80211_set_shortslottime(). Refer to 2249 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2250 */ 2251static void 2252rt2560_update_slot(struct ieee80211com *ic) 2253{ 2254 struct rt2560_softc *sc = ic->ic_softc; 2255 uint8_t slottime; 2256 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2257 uint32_t tmp; 2258 2259#ifndef FORCE_SLOTTIME 2260 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2261#else 2262 /* 2263 * Setting slot time according to "short slot time" capability 2264 * in beacon/probe_resp seems to cause problem to acknowledge 2265 * certain AP's data frames transimitted at CCK/DS rates: the 2266 * problematic AP keeps retransmitting data frames, probably 2267 * because MAC level acks are not received by hardware. 2268 * So we cheat a little bit here by claiming we are capable of 2269 * "short slot time" but setting hardware slot time to the normal 2270 * slot time. ral(4) does not seem to have trouble to receive 2271 * frames transmitted using short slot time even if hardware 2272 * slot time is set to normal slot time. If we didn't use this 2273 * trick, we would have to claim that short slot time is not 2274 * supported; this would give relative poor RX performance 2275 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2276 * slot time. 2277 */ 2278 slottime = 20; 2279#endif 2280 2281 /* update the MAC slot boundaries */ 2282 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2283 tx_pifs = tx_sifs + slottime; 2284 tx_difs = tx_sifs + 2 * slottime; 2285 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2286 2287 tmp = RAL_READ(sc, RT2560_CSR11); 2288 tmp = (tmp & ~0x1f00) | slottime << 8; 2289 RAL_WRITE(sc, RT2560_CSR11, tmp); 2290 2291 tmp = tx_pifs << 16 | tx_sifs; 2292 RAL_WRITE(sc, RT2560_CSR18, tmp); 2293 2294 tmp = eifs << 16 | tx_difs; 2295 RAL_WRITE(sc, RT2560_CSR19, tmp); 2296 2297 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2298} 2299 2300static void 2301rt2560_set_basicrates(struct rt2560_softc *sc, 2302 const struct ieee80211_rateset *rs) 2303{ 2304#define RV(r) ((r) & IEEE80211_RATE_VAL) 2305 struct ieee80211com *ic = &sc->sc_ic; 2306 uint32_t mask = 0; 2307 uint8_t rate; 2308 int i; 2309 2310 for (i = 0; i < rs->rs_nrates; i++) { 2311 rate = rs->rs_rates[i]; 2312 2313 if (!(rate & IEEE80211_RATE_BASIC)) 2314 continue; 2315 2316 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, RV(rate)); 2317 } 2318 2319 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2320 2321 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2322#undef RV 2323} 2324 2325static void 2326rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2327{ 2328 uint32_t tmp; 2329 2330 /* set ON period to 70ms and OFF period to 30ms */ 2331 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2332 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2333} 2334 2335static void 2336rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2337{ 2338 uint32_t tmp; 2339 2340 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2341 RAL_WRITE(sc, RT2560_CSR5, tmp); 2342 2343 tmp = bssid[4] | bssid[5] << 8; 2344 RAL_WRITE(sc, RT2560_CSR6, tmp); 2345 2346 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2347} 2348 2349static void 2350rt2560_set_macaddr(struct rt2560_softc *sc, const uint8_t *addr) 2351{ 2352 uint32_t tmp; 2353 2354 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2355 RAL_WRITE(sc, RT2560_CSR3, tmp); 2356 2357 tmp = addr[4] | addr[5] << 8; 2358 RAL_WRITE(sc, RT2560_CSR4, tmp); 2359 2360 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2361} 2362 2363static void 2364rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2365{ 2366 uint32_t tmp; 2367 2368 tmp = RAL_READ(sc, RT2560_CSR3); 2369 addr[0] = tmp & 0xff; 2370 addr[1] = (tmp >> 8) & 0xff; 2371 addr[2] = (tmp >> 16) & 0xff; 2372 addr[3] = (tmp >> 24); 2373 2374 tmp = RAL_READ(sc, RT2560_CSR4); 2375 addr[4] = tmp & 0xff; 2376 addr[5] = (tmp >> 8) & 0xff; 2377} 2378 2379static void 2380rt2560_update_promisc(struct ieee80211com *ic) 2381{ 2382 struct rt2560_softc *sc = ic->ic_softc; 2383 uint32_t tmp; 2384 2385 tmp = RAL_READ(sc, RT2560_RXCSR0); 2386 2387 tmp &= ~RT2560_DROP_NOT_TO_ME; 2388 if (ic->ic_promisc == 0) 2389 tmp |= RT2560_DROP_NOT_TO_ME; 2390 2391 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2392 2393 DPRINTF(sc, "%s promiscuous mode\n", 2394 (ic->ic_promisc > 0) ? "entering" : "leaving"); 2395} 2396 2397static const char * 2398rt2560_get_rf(int rev) 2399{ 2400 switch (rev) { 2401 case RT2560_RF_2522: return "RT2522"; 2402 case RT2560_RF_2523: return "RT2523"; 2403 case RT2560_RF_2524: return "RT2524"; 2404 case RT2560_RF_2525: return "RT2525"; 2405 case RT2560_RF_2525E: return "RT2525e"; 2406 case RT2560_RF_2526: return "RT2526"; 2407 case RT2560_RF_5222: return "RT5222"; 2408 default: return "unknown"; 2409 } 2410} 2411 2412static void 2413rt2560_read_config(struct rt2560_softc *sc) 2414{ 2415 uint16_t val; 2416 int i; 2417 2418 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2419 sc->rf_rev = (val >> 11) & 0x7; 2420 sc->hw_radio = (val >> 10) & 0x1; 2421 sc->led_mode = (val >> 6) & 0x7; 2422 sc->rx_ant = (val >> 4) & 0x3; 2423 sc->tx_ant = (val >> 2) & 0x3; 2424 sc->nb_ant = val & 0x3; 2425 2426 /* read default values for BBP registers */ 2427 for (i = 0; i < 16; i++) { 2428 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2429 if (val == 0 || val == 0xffff) 2430 continue; 2431 2432 sc->bbp_prom[i].reg = val >> 8; 2433 sc->bbp_prom[i].val = val & 0xff; 2434 } 2435 2436 /* read Tx power for all b/g channels */ 2437 for (i = 0; i < 14 / 2; i++) { 2438 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2439 sc->txpow[i * 2] = val & 0xff; 2440 sc->txpow[i * 2 + 1] = val >> 8; 2441 } 2442 for (i = 0; i < 14; ++i) { 2443 if (sc->txpow[i] > 31) 2444 sc->txpow[i] = 24; 2445 } 2446 2447 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2448 if ((val & 0xff) == 0xff) 2449 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2450 else 2451 sc->rssi_corr = val & 0xff; 2452 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2453 sc->rssi_corr, val); 2454} 2455 2456 2457static void 2458rt2560_scan_start(struct ieee80211com *ic) 2459{ 2460 struct rt2560_softc *sc = ic->ic_softc; 2461 2462 /* abort TSF synchronization */ 2463 RAL_WRITE(sc, RT2560_CSR14, 0); 2464 rt2560_set_bssid(sc, ieee80211broadcastaddr); 2465} 2466 2467static void 2468rt2560_scan_end(struct ieee80211com *ic) 2469{ 2470 struct rt2560_softc *sc = ic->ic_softc; 2471 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2472 2473 rt2560_enable_tsf_sync(sc); 2474 /* XXX keep local copy */ 2475 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2476} 2477 2478static int 2479rt2560_bbp_init(struct rt2560_softc *sc) 2480{ 2481#define N(a) (sizeof (a) / sizeof ((a)[0])) 2482 int i, ntries; 2483 2484 /* wait for BBP to be ready */ 2485 for (ntries = 0; ntries < 100; ntries++) { 2486 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2487 break; 2488 DELAY(1); 2489 } 2490 if (ntries == 100) { 2491 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2492 return EIO; 2493 } 2494 2495 /* initialize BBP registers to default values */ 2496 for (i = 0; i < N(rt2560_def_bbp); i++) { 2497 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2498 rt2560_def_bbp[i].val); 2499 } 2500 2501 /* initialize BBP registers to values stored in EEPROM */ 2502 for (i = 0; i < 16; i++) { 2503 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2504 break; 2505 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2506 } 2507 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2508 2509 return 0; 2510#undef N 2511} 2512 2513static void 2514rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2515{ 2516 uint32_t tmp; 2517 uint8_t tx; 2518 2519 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2520 if (antenna == 1) 2521 tx |= RT2560_BBP_ANTA; 2522 else if (antenna == 2) 2523 tx |= RT2560_BBP_ANTB; 2524 else 2525 tx |= RT2560_BBP_DIVERSITY; 2526 2527 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2528 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2529 sc->rf_rev == RT2560_RF_5222) 2530 tx |= RT2560_BBP_FLIPIQ; 2531 2532 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2533 2534 /* update values for CCK and OFDM in BBPCSR1 */ 2535 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2536 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2537 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2538} 2539 2540static void 2541rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2542{ 2543 uint8_t rx; 2544 2545 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2546 if (antenna == 1) 2547 rx |= RT2560_BBP_ANTA; 2548 else if (antenna == 2) 2549 rx |= RT2560_BBP_ANTB; 2550 else 2551 rx |= RT2560_BBP_DIVERSITY; 2552 2553 /* need to force no I/Q flip for RF 2525e and 2526 */ 2554 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2555 rx &= ~RT2560_BBP_FLIPIQ; 2556 2557 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2558} 2559 2560static void 2561rt2560_init_locked(struct rt2560_softc *sc) 2562{ 2563#define N(a) (sizeof (a) / sizeof ((a)[0])) 2564 struct ieee80211com *ic = &sc->sc_ic; 2565 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2566 uint32_t tmp; 2567 int i; 2568 2569 RAL_LOCK_ASSERT(sc); 2570 2571 rt2560_stop_locked(sc); 2572 2573 /* setup tx rings */ 2574 tmp = RT2560_PRIO_RING_COUNT << 24 | 2575 RT2560_ATIM_RING_COUNT << 16 | 2576 RT2560_TX_RING_COUNT << 8 | 2577 RT2560_TX_DESC_SIZE; 2578 2579 /* rings must be initialized in this exact order */ 2580 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2581 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2582 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2583 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2584 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2585 2586 /* setup rx ring */ 2587 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2588 2589 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2590 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2591 2592 /* initialize MAC registers to default values */ 2593 for (i = 0; i < N(rt2560_def_mac); i++) 2594 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2595 2596 rt2560_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr); 2597 2598 /* set basic rate set (will be updated later) */ 2599 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2600 2601 rt2560_update_slot(ic); 2602 rt2560_update_plcp(sc); 2603 rt2560_update_led(sc, 0, 0); 2604 2605 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2606 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2607 2608 if (rt2560_bbp_init(sc) != 0) { 2609 rt2560_stop_locked(sc); 2610 return; 2611 } 2612 2613 rt2560_set_txantenna(sc, sc->tx_ant); 2614 rt2560_set_rxantenna(sc, sc->rx_ant); 2615 2616 /* set default BSS channel */ 2617 rt2560_set_chan(sc, ic->ic_curchan); 2618 2619 /* kick Rx */ 2620 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2621 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2622 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2623 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2624 ic->ic_opmode != IEEE80211_M_MBSS) 2625 tmp |= RT2560_DROP_TODS; 2626 if (ic->ic_promisc == 0) 2627 tmp |= RT2560_DROP_NOT_TO_ME; 2628 } 2629 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2630 2631 /* clear old FCS and Rx FIFO errors */ 2632 RAL_READ(sc, RT2560_CNT0); 2633 RAL_READ(sc, RT2560_CNT4); 2634 2635 /* clear any pending interrupts */ 2636 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2637 2638 /* enable interrupts */ 2639 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2640 2641 sc->sc_flags |= RT2560_F_RUNNING; 2642 2643 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2644#undef N 2645} 2646 2647static void 2648rt2560_init(void *priv) 2649{ 2650 struct rt2560_softc *sc = priv; 2651 struct ieee80211com *ic = &sc->sc_ic; 2652 2653 RAL_LOCK(sc); 2654 rt2560_init_locked(sc); 2655 RAL_UNLOCK(sc); 2656 2657 if (sc->sc_flags & RT2560_F_RUNNING) 2658 ieee80211_start_all(ic); /* start all vap's */ 2659} 2660 2661static void 2662rt2560_stop_locked(struct rt2560_softc *sc) 2663{ 2664 volatile int *flags = &sc->sc_flags; 2665 2666 RAL_LOCK_ASSERT(sc); 2667 2668 while (*flags & RT2560_F_INPUT_RUNNING) 2669 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2670 2671 callout_stop(&sc->watchdog_ch); 2672 sc->sc_tx_timer = 0; 2673 2674 if (sc->sc_flags & RT2560_F_RUNNING) { 2675 sc->sc_flags &= ~RT2560_F_RUNNING; 2676 2677 /* abort Tx */ 2678 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2679 2680 /* disable Rx */ 2681 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2682 2683 /* reset ASIC (imply reset BBP) */ 2684 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2685 RAL_WRITE(sc, RT2560_CSR1, 0); 2686 2687 /* disable interrupts */ 2688 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2689 2690 /* reset Tx and Rx rings */ 2691 rt2560_reset_tx_ring(sc, &sc->txq); 2692 rt2560_reset_tx_ring(sc, &sc->atimq); 2693 rt2560_reset_tx_ring(sc, &sc->prioq); 2694 rt2560_reset_tx_ring(sc, &sc->bcnq); 2695 rt2560_reset_rx_ring(sc, &sc->rxq); 2696 } 2697} 2698 2699void 2700rt2560_stop(void *arg) 2701{ 2702 struct rt2560_softc *sc = arg; 2703 2704 RAL_LOCK(sc); 2705 rt2560_stop_locked(sc); 2706 RAL_UNLOCK(sc); 2707} 2708 2709static int 2710rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2711 const struct ieee80211_bpf_params *params) 2712{ 2713 struct ieee80211com *ic = ni->ni_ic; 2714 struct rt2560_softc *sc = ic->ic_softc; 2715 2716 RAL_LOCK(sc); 2717 2718 /* prevent management frames from being sent if we're not ready */ 2719 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 2720 RAL_UNLOCK(sc); 2721 m_freem(m); 2722 ieee80211_free_node(ni); 2723 return ENETDOWN; 2724 } 2725 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2726 RAL_UNLOCK(sc); 2727 m_freem(m); 2728 ieee80211_free_node(ni); 2729 return ENOBUFS; /* XXX */ 2730 } 2731 2732 if (params == NULL) { 2733 /* 2734 * Legacy path; interpret frame contents to decide 2735 * precisely how to send the frame. 2736 */ 2737 if (rt2560_tx_mgt(sc, m, ni) != 0) 2738 goto bad; 2739 } else { 2740 /* 2741 * Caller supplied explicit parameters to use in 2742 * sending the frame. 2743 */ 2744 if (rt2560_tx_raw(sc, m, ni, params)) 2745 goto bad; 2746 } 2747 sc->sc_tx_timer = 5; 2748 2749 RAL_UNLOCK(sc); 2750 2751 return 0; 2752bad: 2753 ieee80211_free_node(ni); 2754 RAL_UNLOCK(sc); 2755 return EIO; /* XXX */ 2756} 2757