rt2560.c revision 300752
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 300752 2016-05-26 16:05:19Z 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: head/sys/dev/ral/rt2560.c 300752 2016-05-26 16:05:19Z 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_2ghz[] = 193 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 }; 194 195static const uint8_t rt2560_chan_5ghz[] = 196 { 36, 40, 44, 48, 52, 56, 60, 64, 197 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 198 149, 153, 157, 161 }; 199 200static const struct { 201 uint8_t chan; 202 uint32_t r1, r2, r4; 203} rt2560_rf5222[] = { 204 RT2560_RF5222 205}; 206 207int 208rt2560_attach(device_t dev, int id) 209{ 210 struct rt2560_softc *sc = device_get_softc(dev); 211 struct ieee80211com *ic = &sc->sc_ic; 212 int error; 213 214 sc->sc_dev = dev; 215 216 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 217 MTX_DEF | MTX_RECURSE); 218 219 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 220 mbufq_init(&sc->sc_snd, ifqmaxlen); 221 222 /* retrieve RT2560 rev. no */ 223 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 224 225 /* retrieve RF rev. no and various other things from EEPROM */ 226 rt2560_read_config(sc); 227 228 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 229 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 230 231 /* 232 * Allocate Tx and Rx rings. 233 */ 234 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 235 if (error != 0) { 236 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 237 goto fail1; 238 } 239 240 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 241 if (error != 0) { 242 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 243 goto fail2; 244 } 245 246 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 247 if (error != 0) { 248 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 249 goto fail3; 250 } 251 252 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 253 if (error != 0) { 254 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 255 goto fail4; 256 } 257 258 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 259 if (error != 0) { 260 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 261 goto fail5; 262 } 263 264 /* retrieve MAC address */ 265 rt2560_get_macaddr(sc, ic->ic_macaddr); 266 267 ic->ic_softc = sc; 268 ic->ic_name = device_get_nameunit(dev); 269 ic->ic_opmode = IEEE80211_M_STA; 270 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 271 272 /* set device capabilities */ 273 ic->ic_caps = 274 IEEE80211_C_STA /* station mode */ 275 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 276 | IEEE80211_C_HOSTAP /* hostap mode */ 277 | IEEE80211_C_MONITOR /* monitor mode */ 278 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 279 | IEEE80211_C_WDS /* 4-address traffic works */ 280 | IEEE80211_C_MBSS /* mesh point link mode */ 281 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 282 | IEEE80211_C_SHSLOT /* short slot time supported */ 283 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 284 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 285#ifdef notyet 286 | IEEE80211_C_TXFRAG /* handle tx frags */ 287#endif 288 ; 289 290 rt2560_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans, 291 ic->ic_channels); 292 293 ieee80211_ifattach(ic); 294 ic->ic_raw_xmit = rt2560_raw_xmit; 295 ic->ic_updateslot = rt2560_update_slot; 296 ic->ic_update_promisc = rt2560_update_promisc; 297 ic->ic_scan_start = rt2560_scan_start; 298 ic->ic_scan_end = rt2560_scan_end; 299 ic->ic_getradiocaps = rt2560_getradiocaps; 300 ic->ic_set_channel = rt2560_set_channel; 301 302 ic->ic_vap_create = rt2560_vap_create; 303 ic->ic_vap_delete = rt2560_vap_delete; 304 ic->ic_parent = rt2560_parent; 305 ic->ic_transmit = rt2560_transmit; 306 307 ieee80211_radiotap_attach(ic, 308 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 309 RT2560_TX_RADIOTAP_PRESENT, 310 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 311 RT2560_RX_RADIOTAP_PRESENT); 312 313 /* 314 * Add a few sysctl knobs. 315 */ 316#ifdef RAL_DEBUG 317 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 318 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 319 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 320#endif 321 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 322 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 323 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 324 325 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 326 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 327 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 328 329 if (bootverbose) 330 ieee80211_announce(ic); 331 332 return 0; 333 334fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 335fail4: rt2560_free_tx_ring(sc, &sc->prioq); 336fail3: rt2560_free_tx_ring(sc, &sc->atimq); 337fail2: rt2560_free_tx_ring(sc, &sc->txq); 338fail1: mtx_destroy(&sc->sc_mtx); 339 340 return ENXIO; 341} 342 343int 344rt2560_detach(void *xsc) 345{ 346 struct rt2560_softc *sc = xsc; 347 struct ieee80211com *ic = &sc->sc_ic; 348 349 rt2560_stop(sc); 350 351 ieee80211_ifdetach(ic); 352 mbufq_drain(&sc->sc_snd); 353 354 rt2560_free_tx_ring(sc, &sc->txq); 355 rt2560_free_tx_ring(sc, &sc->atimq); 356 rt2560_free_tx_ring(sc, &sc->prioq); 357 rt2560_free_tx_ring(sc, &sc->bcnq); 358 rt2560_free_rx_ring(sc, &sc->rxq); 359 360 mtx_destroy(&sc->sc_mtx); 361 362 return 0; 363} 364 365static struct ieee80211vap * 366rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 367 enum ieee80211_opmode opmode, int flags, 368 const uint8_t bssid[IEEE80211_ADDR_LEN], 369 const uint8_t mac[IEEE80211_ADDR_LEN]) 370{ 371 struct rt2560_softc *sc = ic->ic_softc; 372 struct rt2560_vap *rvp; 373 struct ieee80211vap *vap; 374 375 switch (opmode) { 376 case IEEE80211_M_STA: 377 case IEEE80211_M_IBSS: 378 case IEEE80211_M_AHDEMO: 379 case IEEE80211_M_MONITOR: 380 case IEEE80211_M_HOSTAP: 381 case IEEE80211_M_MBSS: 382 /* XXXRP: TBD */ 383 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 384 device_printf(sc->sc_dev, "only 1 vap supported\n"); 385 return NULL; 386 } 387 if (opmode == IEEE80211_M_STA) 388 flags |= IEEE80211_CLONE_NOBEACONS; 389 break; 390 case IEEE80211_M_WDS: 391 if (TAILQ_EMPTY(&ic->ic_vaps) || 392 ic->ic_opmode != IEEE80211_M_HOSTAP) { 393 device_printf(sc->sc_dev, 394 "wds only supported in ap mode\n"); 395 return NULL; 396 } 397 /* 398 * Silently remove any request for a unique 399 * bssid; WDS vap's always share the local 400 * mac address. 401 */ 402 flags &= ~IEEE80211_CLONE_BSSID; 403 break; 404 default: 405 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 406 return NULL; 407 } 408 rvp = malloc(sizeof(struct rt2560_vap), M_80211_VAP, M_WAITOK | M_ZERO); 409 vap = &rvp->ral_vap; 410 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid); 411 412 /* override state transition machine */ 413 rvp->ral_newstate = vap->iv_newstate; 414 vap->iv_newstate = rt2560_newstate; 415 vap->iv_update_beacon = rt2560_beacon_update; 416 417 ieee80211_ratectl_init(vap); 418 /* complete setup */ 419 ieee80211_vap_attach(vap, ieee80211_media_change, 420 ieee80211_media_status, mac); 421 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 422 ic->ic_opmode = opmode; 423 return vap; 424} 425 426static void 427rt2560_vap_delete(struct ieee80211vap *vap) 428{ 429 struct rt2560_vap *rvp = RT2560_VAP(vap); 430 431 ieee80211_ratectl_deinit(vap); 432 ieee80211_vap_detach(vap); 433 free(rvp, M_80211_VAP); 434} 435 436void 437rt2560_resume(void *xsc) 438{ 439 struct rt2560_softc *sc = xsc; 440 441 if (sc->sc_ic.ic_nrunning > 0) 442 rt2560_init(sc); 443} 444 445static void 446rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 447{ 448 if (error != 0) 449 return; 450 451 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 452 453 *(bus_addr_t *)arg = segs[0].ds_addr; 454} 455 456static int 457rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 458 int count) 459{ 460 int i, error; 461 462 ring->count = count; 463 ring->queued = 0; 464 ring->cur = ring->next = 0; 465 ring->cur_encrypt = ring->next_encrypt = 0; 466 467 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 468 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 469 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 470 0, NULL, NULL, &ring->desc_dmat); 471 if (error != 0) { 472 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 473 goto fail; 474 } 475 476 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 477 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 478 if (error != 0) { 479 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 480 goto fail; 481 } 482 483 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 484 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 485 0); 486 if (error != 0) { 487 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 488 goto fail; 489 } 490 491 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 492 M_NOWAIT | M_ZERO); 493 if (ring->data == NULL) { 494 device_printf(sc->sc_dev, "could not allocate soft data\n"); 495 error = ENOMEM; 496 goto fail; 497 } 498 499 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 500 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 501 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 502 &ring->data_dmat); 503 if (error != 0) { 504 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 505 goto fail; 506 } 507 508 for (i = 0; i < count; i++) { 509 error = bus_dmamap_create(ring->data_dmat, 0, 510 &ring->data[i].map); 511 if (error != 0) { 512 device_printf(sc->sc_dev, "could not create DMA map\n"); 513 goto fail; 514 } 515 } 516 517 return 0; 518 519fail: rt2560_free_tx_ring(sc, ring); 520 return error; 521} 522 523static void 524rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 525{ 526 struct rt2560_tx_desc *desc; 527 struct rt2560_tx_data *data; 528 int i; 529 530 for (i = 0; i < ring->count; i++) { 531 desc = &ring->desc[i]; 532 data = &ring->data[i]; 533 534 if (data->m != NULL) { 535 bus_dmamap_sync(ring->data_dmat, data->map, 536 BUS_DMASYNC_POSTWRITE); 537 bus_dmamap_unload(ring->data_dmat, data->map); 538 m_freem(data->m); 539 data->m = NULL; 540 } 541 542 if (data->ni != NULL) { 543 ieee80211_free_node(data->ni); 544 data->ni = NULL; 545 } 546 547 desc->flags = 0; 548 } 549 550 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 551 552 ring->queued = 0; 553 ring->cur = ring->next = 0; 554 ring->cur_encrypt = ring->next_encrypt = 0; 555} 556 557static void 558rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 559{ 560 struct rt2560_tx_data *data; 561 int i; 562 563 if (ring->desc != NULL) { 564 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 565 BUS_DMASYNC_POSTWRITE); 566 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 567 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 568 } 569 570 if (ring->desc_dmat != NULL) 571 bus_dma_tag_destroy(ring->desc_dmat); 572 573 if (ring->data != NULL) { 574 for (i = 0; i < ring->count; i++) { 575 data = &ring->data[i]; 576 577 if (data->m != NULL) { 578 bus_dmamap_sync(ring->data_dmat, data->map, 579 BUS_DMASYNC_POSTWRITE); 580 bus_dmamap_unload(ring->data_dmat, data->map); 581 m_freem(data->m); 582 } 583 584 if (data->ni != NULL) 585 ieee80211_free_node(data->ni); 586 587 if (data->map != NULL) 588 bus_dmamap_destroy(ring->data_dmat, data->map); 589 } 590 591 free(ring->data, M_DEVBUF); 592 } 593 594 if (ring->data_dmat != NULL) 595 bus_dma_tag_destroy(ring->data_dmat); 596} 597 598static int 599rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 600 int count) 601{ 602 struct rt2560_rx_desc *desc; 603 struct rt2560_rx_data *data; 604 bus_addr_t physaddr; 605 int i, error; 606 607 ring->count = count; 608 ring->cur = ring->next = 0; 609 ring->cur_decrypt = 0; 610 611 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 612 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 613 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 614 0, NULL, NULL, &ring->desc_dmat); 615 if (error != 0) { 616 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 617 goto fail; 618 } 619 620 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 621 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 622 if (error != 0) { 623 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 624 goto fail; 625 } 626 627 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 628 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 629 0); 630 if (error != 0) { 631 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 632 goto fail; 633 } 634 635 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 636 M_NOWAIT | M_ZERO); 637 if (ring->data == NULL) { 638 device_printf(sc->sc_dev, "could not allocate soft data\n"); 639 error = ENOMEM; 640 goto fail; 641 } 642 643 /* 644 * Pre-allocate Rx buffers and populate Rx ring. 645 */ 646 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 647 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 648 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 649 if (error != 0) { 650 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 651 goto fail; 652 } 653 654 for (i = 0; i < count; i++) { 655 desc = &sc->rxq.desc[i]; 656 data = &sc->rxq.data[i]; 657 658 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 659 if (error != 0) { 660 device_printf(sc->sc_dev, "could not create DMA map\n"); 661 goto fail; 662 } 663 664 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 665 if (data->m == NULL) { 666 device_printf(sc->sc_dev, 667 "could not allocate rx mbuf\n"); 668 error = ENOMEM; 669 goto fail; 670 } 671 672 error = bus_dmamap_load(ring->data_dmat, data->map, 673 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 674 &physaddr, 0); 675 if (error != 0) { 676 device_printf(sc->sc_dev, 677 "could not load rx buf DMA map"); 678 goto fail; 679 } 680 681 desc->flags = htole32(RT2560_RX_BUSY); 682 desc->physaddr = htole32(physaddr); 683 } 684 685 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 686 687 return 0; 688 689fail: rt2560_free_rx_ring(sc, ring); 690 return error; 691} 692 693static void 694rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 695{ 696 int i; 697 698 for (i = 0; i < ring->count; i++) { 699 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 700 ring->data[i].drop = 0; 701 } 702 703 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 704 705 ring->cur = ring->next = 0; 706 ring->cur_decrypt = 0; 707} 708 709static void 710rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 711{ 712 struct rt2560_rx_data *data; 713 int i; 714 715 if (ring->desc != NULL) { 716 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 717 BUS_DMASYNC_POSTWRITE); 718 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 719 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 720 } 721 722 if (ring->desc_dmat != NULL) 723 bus_dma_tag_destroy(ring->desc_dmat); 724 725 if (ring->data != NULL) { 726 for (i = 0; i < ring->count; i++) { 727 data = &ring->data[i]; 728 729 if (data->m != NULL) { 730 bus_dmamap_sync(ring->data_dmat, data->map, 731 BUS_DMASYNC_POSTREAD); 732 bus_dmamap_unload(ring->data_dmat, data->map); 733 m_freem(data->m); 734 } 735 736 if (data->map != NULL) 737 bus_dmamap_destroy(ring->data_dmat, data->map); 738 } 739 740 free(ring->data, M_DEVBUF); 741 } 742 743 if (ring->data_dmat != NULL) 744 bus_dma_tag_destroy(ring->data_dmat); 745} 746 747static int 748rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 749{ 750 struct rt2560_vap *rvp = RT2560_VAP(vap); 751 struct rt2560_softc *sc = vap->iv_ic->ic_softc; 752 int error; 753 754 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 755 /* abort TSF synchronization */ 756 RAL_WRITE(sc, RT2560_CSR14, 0); 757 758 /* turn association led off */ 759 rt2560_update_led(sc, 0, 0); 760 } 761 762 error = rvp->ral_newstate(vap, nstate, arg); 763 764 if (error == 0 && nstate == IEEE80211_S_RUN) { 765 struct ieee80211_node *ni = vap->iv_bss; 766 struct mbuf *m; 767 768 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 769 rt2560_update_plcp(sc); 770 rt2560_set_basicrates(sc, &ni->ni_rates); 771 rt2560_set_bssid(sc, ni->ni_bssid); 772 } 773 774 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 775 vap->iv_opmode == IEEE80211_M_IBSS || 776 vap->iv_opmode == IEEE80211_M_MBSS) { 777 m = ieee80211_beacon_alloc(ni); 778 if (m == NULL) { 779 device_printf(sc->sc_dev, 780 "could not allocate beacon\n"); 781 return ENOBUFS; 782 } 783 ieee80211_ref_node(ni); 784 error = rt2560_tx_bcn(sc, m, ni); 785 if (error != 0) 786 return error; 787 } 788 789 /* turn association led on */ 790 rt2560_update_led(sc, 1, 0); 791 792 if (vap->iv_opmode != IEEE80211_M_MONITOR) 793 rt2560_enable_tsf_sync(sc); 794 else 795 rt2560_enable_tsf(sc); 796 } 797 return error; 798} 799 800/* 801 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 802 * 93C66). 803 */ 804static uint16_t 805rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 806{ 807 uint32_t tmp; 808 uint16_t val; 809 int n; 810 811 /* clock C once before the first command */ 812 RT2560_EEPROM_CTL(sc, 0); 813 814 RT2560_EEPROM_CTL(sc, RT2560_S); 815 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 816 RT2560_EEPROM_CTL(sc, RT2560_S); 817 818 /* write start bit (1) */ 819 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 820 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 821 822 /* write READ opcode (10) */ 823 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 824 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 825 RT2560_EEPROM_CTL(sc, RT2560_S); 826 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 827 828 /* write address (A5-A0 or A7-A0) */ 829 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 830 for (; n >= 0; n--) { 831 RT2560_EEPROM_CTL(sc, RT2560_S | 832 (((addr >> n) & 1) << RT2560_SHIFT_D)); 833 RT2560_EEPROM_CTL(sc, RT2560_S | 834 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 835 } 836 837 RT2560_EEPROM_CTL(sc, RT2560_S); 838 839 /* read data Q15-Q0 */ 840 val = 0; 841 for (n = 15; n >= 0; n--) { 842 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 843 tmp = RAL_READ(sc, RT2560_CSR21); 844 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 845 RT2560_EEPROM_CTL(sc, RT2560_S); 846 } 847 848 RT2560_EEPROM_CTL(sc, 0); 849 850 /* clear Chip Select and clock C */ 851 RT2560_EEPROM_CTL(sc, RT2560_S); 852 RT2560_EEPROM_CTL(sc, 0); 853 RT2560_EEPROM_CTL(sc, RT2560_C); 854 855 return val; 856} 857 858/* 859 * Some frames were processed by the hardware cipher engine and are ready for 860 * transmission. 861 */ 862static void 863rt2560_encryption_intr(struct rt2560_softc *sc) 864{ 865 struct rt2560_tx_desc *desc; 866 int hw; 867 868 /* retrieve last descriptor index processed by cipher engine */ 869 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 870 hw /= RT2560_TX_DESC_SIZE; 871 872 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 873 BUS_DMASYNC_POSTREAD); 874 875 while (sc->txq.next_encrypt != hw) { 876 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 877 printf("hw encrypt %d, cur_encrypt %d\n", hw, 878 sc->txq.cur_encrypt); 879 break; 880 } 881 882 desc = &sc->txq.desc[sc->txq.next_encrypt]; 883 884 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 885 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 886 break; 887 888 /* for TKIP, swap eiv field to fix a bug in ASIC */ 889 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 890 RT2560_TX_CIPHER_TKIP) 891 desc->eiv = bswap32(desc->eiv); 892 893 /* mark the frame ready for transmission */ 894 desc->flags |= htole32(RT2560_TX_VALID); 895 desc->flags |= htole32(RT2560_TX_BUSY); 896 897 DPRINTFN(sc, 15, "encryption done idx=%u\n", 898 sc->txq.next_encrypt); 899 900 sc->txq.next_encrypt = 901 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 902 } 903 904 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 905 BUS_DMASYNC_PREWRITE); 906 907 /* kick Tx */ 908 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 909} 910 911static void 912rt2560_tx_intr(struct rt2560_softc *sc) 913{ 914 struct rt2560_tx_desc *desc; 915 struct rt2560_tx_data *data; 916 struct mbuf *m; 917 struct ieee80211vap *vap; 918 struct ieee80211_node *ni; 919 uint32_t flags; 920 int retrycnt, status; 921 922 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 923 BUS_DMASYNC_POSTREAD); 924 925 for (;;) { 926 desc = &sc->txq.desc[sc->txq.next]; 927 data = &sc->txq.data[sc->txq.next]; 928 929 flags = le32toh(desc->flags); 930 if ((flags & RT2560_TX_BUSY) || 931 (flags & RT2560_TX_CIPHER_BUSY) || 932 !(flags & RT2560_TX_VALID)) 933 break; 934 935 m = data->m; 936 ni = data->ni; 937 vap = ni->ni_vap; 938 939 switch (flags & RT2560_TX_RESULT_MASK) { 940 case RT2560_TX_SUCCESS: 941 retrycnt = 0; 942 943 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 944 if (data->rix != IEEE80211_FIXED_RATE_NONE) 945 ieee80211_ratectl_tx_complete(vap, ni, 946 IEEE80211_RATECTL_TX_SUCCESS, 947 &retrycnt, NULL); 948 status = 0; 949 break; 950 951 case RT2560_TX_SUCCESS_RETRY: 952 retrycnt = RT2560_TX_RETRYCNT(flags); 953 954 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 955 retrycnt); 956 if (data->rix != IEEE80211_FIXED_RATE_NONE) 957 ieee80211_ratectl_tx_complete(vap, ni, 958 IEEE80211_RATECTL_TX_SUCCESS, 959 &retrycnt, NULL); 960 status = 0; 961 break; 962 963 case RT2560_TX_FAIL_RETRY: 964 retrycnt = RT2560_TX_RETRYCNT(flags); 965 966 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 967 retrycnt); 968 if (data->rix != IEEE80211_FIXED_RATE_NONE) 969 ieee80211_ratectl_tx_complete(vap, ni, 970 IEEE80211_RATECTL_TX_FAILURE, 971 &retrycnt, NULL); 972 status = 1; 973 break; 974 975 case RT2560_TX_FAIL_INVALID: 976 case RT2560_TX_FAIL_OTHER: 977 default: 978 device_printf(sc->sc_dev, "sending data frame failed " 979 "0x%08x\n", flags); 980 status = 1; 981 } 982 983 bus_dmamap_sync(sc->txq.data_dmat, data->map, 984 BUS_DMASYNC_POSTWRITE); 985 bus_dmamap_unload(sc->txq.data_dmat, data->map); 986 987 ieee80211_tx_complete(ni, m, status); 988 data->ni = NULL; 989 data->m = NULL; 990 991 /* descriptor is no longer valid */ 992 desc->flags &= ~htole32(RT2560_TX_VALID); 993 994 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 995 996 sc->txq.queued--; 997 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 998 } 999 1000 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1001 BUS_DMASYNC_PREWRITE); 1002 1003 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1004 sc->sc_tx_timer = 0; 1005 1006 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) 1007 rt2560_start(sc); 1008} 1009 1010static void 1011rt2560_prio_intr(struct rt2560_softc *sc) 1012{ 1013 struct rt2560_tx_desc *desc; 1014 struct rt2560_tx_data *data; 1015 struct ieee80211_node *ni; 1016 struct mbuf *m; 1017 int flags; 1018 1019 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1020 BUS_DMASYNC_POSTREAD); 1021 1022 for (;;) { 1023 desc = &sc->prioq.desc[sc->prioq.next]; 1024 data = &sc->prioq.data[sc->prioq.next]; 1025 1026 flags = le32toh(desc->flags); 1027 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1028 break; 1029 1030 switch (flags & RT2560_TX_RESULT_MASK) { 1031 case RT2560_TX_SUCCESS: 1032 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1033 break; 1034 1035 case RT2560_TX_SUCCESS_RETRY: 1036 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1037 (flags >> 5) & 0x7); 1038 break; 1039 1040 case RT2560_TX_FAIL_RETRY: 1041 DPRINTFN(sc, 9, "%s\n", 1042 "sending mgt frame failed (too much retries)"); 1043 break; 1044 1045 case RT2560_TX_FAIL_INVALID: 1046 case RT2560_TX_FAIL_OTHER: 1047 default: 1048 device_printf(sc->sc_dev, "sending mgt frame failed " 1049 "0x%08x\n", flags); 1050 break; 1051 } 1052 1053 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1054 BUS_DMASYNC_POSTWRITE); 1055 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1056 1057 m = data->m; 1058 data->m = NULL; 1059 ni = data->ni; 1060 data->ni = NULL; 1061 1062 /* descriptor is no longer valid */ 1063 desc->flags &= ~htole32(RT2560_TX_VALID); 1064 1065 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1066 1067 sc->prioq.queued--; 1068 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1069 1070 if (m->m_flags & M_TXCB) 1071 ieee80211_process_callback(ni, m, 1072 (flags & RT2560_TX_RESULT_MASK) &~ 1073 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1074 m_freem(m); 1075 ieee80211_free_node(ni); 1076 } 1077 1078 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1079 BUS_DMASYNC_PREWRITE); 1080 1081 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1082 sc->sc_tx_timer = 0; 1083 1084 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) 1085 rt2560_start(sc); 1086} 1087 1088/* 1089 * Some frames were processed by the hardware cipher engine and are ready for 1090 * handoff to the IEEE802.11 layer. 1091 */ 1092static void 1093rt2560_decryption_intr(struct rt2560_softc *sc) 1094{ 1095 struct ieee80211com *ic = &sc->sc_ic; 1096 struct rt2560_rx_desc *desc; 1097 struct rt2560_rx_data *data; 1098 bus_addr_t physaddr; 1099 struct ieee80211_frame *wh; 1100 struct ieee80211_node *ni; 1101 struct mbuf *mnew, *m; 1102 int hw, error; 1103 int8_t rssi, nf; 1104 1105 /* retrieve last descriptor index processed by cipher engine */ 1106 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1107 hw /= RT2560_RX_DESC_SIZE; 1108 1109 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1110 BUS_DMASYNC_POSTREAD); 1111 1112 for (; sc->rxq.cur_decrypt != hw;) { 1113 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1114 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1115 1116 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1117 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1118 break; 1119 1120 if (data->drop) { 1121 counter_u64_add(ic->ic_ierrors, 1); 1122 goto skip; 1123 } 1124 1125 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1126 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1127 counter_u64_add(ic->ic_ierrors, 1); 1128 goto skip; 1129 } 1130 1131 /* 1132 * Try to allocate a new mbuf for this ring element and load it 1133 * before processing the current mbuf. If the ring element 1134 * cannot be loaded, drop the received packet and reuse the old 1135 * mbuf. In the unlikely case that the old mbuf can't be 1136 * reloaded either, explicitly panic. 1137 */ 1138 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1139 if (mnew == NULL) { 1140 counter_u64_add(ic->ic_ierrors, 1); 1141 goto skip; 1142 } 1143 1144 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1145 BUS_DMASYNC_POSTREAD); 1146 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1147 1148 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1149 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1150 &physaddr, 0); 1151 if (error != 0) { 1152 m_freem(mnew); 1153 1154 /* try to reload the old mbuf */ 1155 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1156 mtod(data->m, void *), MCLBYTES, 1157 rt2560_dma_map_addr, &physaddr, 0); 1158 if (error != 0) { 1159 /* very unlikely that it will fail... */ 1160 panic("%s: could not load old rx mbuf", 1161 device_get_name(sc->sc_dev)); 1162 } 1163 counter_u64_add(ic->ic_ierrors, 1); 1164 goto skip; 1165 } 1166 1167 /* 1168 * New mbuf successfully loaded, update Rx ring and continue 1169 * processing. 1170 */ 1171 m = data->m; 1172 data->m = mnew; 1173 desc->physaddr = htole32(physaddr); 1174 1175 /* finalize mbuf */ 1176 m->m_pkthdr.len = m->m_len = 1177 (le32toh(desc->flags) >> 16) & 0xfff; 1178 1179 rssi = RT2560_RSSI(sc, desc->rssi); 1180 nf = RT2560_NOISE_FLOOR; 1181 if (ieee80211_radiotap_active(ic)) { 1182 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1183 uint32_t tsf_lo, tsf_hi; 1184 1185 /* get timestamp (low and high 32 bits) */ 1186 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1187 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1188 1189 tap->wr_tsf = 1190 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1191 tap->wr_flags = 0; 1192 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1193 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1194 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1195 tap->wr_antenna = sc->rx_ant; 1196 tap->wr_antsignal = nf + rssi; 1197 tap->wr_antnoise = nf; 1198 } 1199 1200 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1201 RAL_UNLOCK(sc); 1202 wh = mtod(m, struct ieee80211_frame *); 1203 ni = ieee80211_find_rxnode(ic, 1204 (struct ieee80211_frame_min *)wh); 1205 if (ni != NULL) { 1206 (void) ieee80211_input(ni, m, rssi, nf); 1207 ieee80211_free_node(ni); 1208 } else 1209 (void) ieee80211_input_all(ic, m, rssi, nf); 1210 1211 RAL_LOCK(sc); 1212 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1213skip: desc->flags = htole32(RT2560_RX_BUSY); 1214 1215 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1216 1217 sc->rxq.cur_decrypt = 1218 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1219 } 1220 1221 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1222 BUS_DMASYNC_PREWRITE); 1223} 1224 1225/* 1226 * Some frames were received. Pass them to the hardware cipher engine before 1227 * sending them to the 802.11 layer. 1228 */ 1229static void 1230rt2560_rx_intr(struct rt2560_softc *sc) 1231{ 1232 struct rt2560_rx_desc *desc; 1233 struct rt2560_rx_data *data; 1234 1235 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1236 BUS_DMASYNC_POSTREAD); 1237 1238 for (;;) { 1239 desc = &sc->rxq.desc[sc->rxq.cur]; 1240 data = &sc->rxq.data[sc->rxq.cur]; 1241 1242 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1243 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1244 break; 1245 1246 data->drop = 0; 1247 1248 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1249 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1250 /* 1251 * This should not happen since we did not request 1252 * to receive those frames when we filled RXCSR0. 1253 */ 1254 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1255 le32toh(desc->flags)); 1256 data->drop = 1; 1257 } 1258 1259 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1260 DPRINTFN(sc, 5, "%s\n", "bad length"); 1261 data->drop = 1; 1262 } 1263 1264 /* mark the frame for decryption */ 1265 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1266 1267 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1268 1269 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1270 } 1271 1272 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1273 BUS_DMASYNC_PREWRITE); 1274 1275 /* kick decrypt */ 1276 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1277} 1278 1279static void 1280rt2560_beacon_update(struct ieee80211vap *vap, int item) 1281{ 1282 struct ieee80211_beacon_offsets *bo = &vap->iv_bcn_off; 1283 1284 setbit(bo->bo_flags, item); 1285} 1286 1287/* 1288 * This function is called periodically in IBSS mode when a new beacon must be 1289 * sent out. 1290 */ 1291static void 1292rt2560_beacon_expire(struct rt2560_softc *sc) 1293{ 1294 struct ieee80211com *ic = &sc->sc_ic; 1295 struct rt2560_tx_data *data; 1296 1297 if (ic->ic_opmode != IEEE80211_M_IBSS && 1298 ic->ic_opmode != IEEE80211_M_HOSTAP && 1299 ic->ic_opmode != IEEE80211_M_MBSS) 1300 return; 1301 1302 data = &sc->bcnq.data[sc->bcnq.next]; 1303 /* 1304 * Don't send beacon if bsschan isn't set 1305 */ 1306 if (data->ni == NULL) 1307 return; 1308 1309 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1310 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1311 1312 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1313 ieee80211_beacon_update(data->ni, data->m, 1); 1314 1315 rt2560_tx_bcn(sc, data->m, data->ni); 1316 1317 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1318 1319 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1320} 1321 1322/* ARGSUSED */ 1323static void 1324rt2560_wakeup_expire(struct rt2560_softc *sc) 1325{ 1326 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1327} 1328 1329void 1330rt2560_intr(void *arg) 1331{ 1332 struct rt2560_softc *sc = arg; 1333 uint32_t r; 1334 1335 RAL_LOCK(sc); 1336 1337 /* disable interrupts */ 1338 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1339 1340 /* don't re-enable interrupts if we're shutting down */ 1341 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 1342 RAL_UNLOCK(sc); 1343 return; 1344 } 1345 1346 r = RAL_READ(sc, RT2560_CSR7); 1347 RAL_WRITE(sc, RT2560_CSR7, r); 1348 1349 if (r & RT2560_BEACON_EXPIRE) 1350 rt2560_beacon_expire(sc); 1351 1352 if (r & RT2560_WAKEUP_EXPIRE) 1353 rt2560_wakeup_expire(sc); 1354 1355 if (r & RT2560_ENCRYPTION_DONE) 1356 rt2560_encryption_intr(sc); 1357 1358 if (r & RT2560_TX_DONE) 1359 rt2560_tx_intr(sc); 1360 1361 if (r & RT2560_PRIO_DONE) 1362 rt2560_prio_intr(sc); 1363 1364 if (r & RT2560_DECRYPTION_DONE) 1365 rt2560_decryption_intr(sc); 1366 1367 if (r & RT2560_RX_DONE) { 1368 rt2560_rx_intr(sc); 1369 rt2560_encryption_intr(sc); 1370 } 1371 1372 /* re-enable interrupts */ 1373 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1374 1375 RAL_UNLOCK(sc); 1376} 1377 1378#define RAL_SIFS 10 /* us */ 1379 1380#define RT2560_TXRX_TURNAROUND 10 /* us */ 1381 1382static uint8_t 1383rt2560_plcp_signal(int rate) 1384{ 1385 switch (rate) { 1386 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1387 case 12: return 0xb; 1388 case 18: return 0xf; 1389 case 24: return 0xa; 1390 case 36: return 0xe; 1391 case 48: return 0x9; 1392 case 72: return 0xd; 1393 case 96: return 0x8; 1394 case 108: return 0xc; 1395 1396 /* CCK rates (NB: not IEEE std, device-specific) */ 1397 case 2: return 0x0; 1398 case 4: return 0x1; 1399 case 11: return 0x2; 1400 case 22: return 0x3; 1401 } 1402 return 0xff; /* XXX unsupported/unknown rate */ 1403} 1404 1405static void 1406rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1407 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1408{ 1409 struct ieee80211com *ic = &sc->sc_ic; 1410 uint16_t plcp_length; 1411 int remainder; 1412 1413 desc->flags = htole32(flags); 1414 desc->flags |= htole32(len << 16); 1415 1416 desc->physaddr = htole32(physaddr); 1417 desc->wme = htole16( 1418 RT2560_AIFSN(2) | 1419 RT2560_LOGCWMIN(3) | 1420 RT2560_LOGCWMAX(8)); 1421 1422 /* setup PLCP fields */ 1423 desc->plcp_signal = rt2560_plcp_signal(rate); 1424 desc->plcp_service = 4; 1425 1426 len += IEEE80211_CRC_LEN; 1427 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1428 desc->flags |= htole32(RT2560_TX_OFDM); 1429 1430 plcp_length = len & 0xfff; 1431 desc->plcp_length_hi = plcp_length >> 6; 1432 desc->plcp_length_lo = plcp_length & 0x3f; 1433 } else { 1434 plcp_length = howmany(16 * len, rate); 1435 if (rate == 22) { 1436 remainder = (16 * len) % 22; 1437 if (remainder != 0 && remainder < 7) 1438 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1439 } 1440 desc->plcp_length_hi = plcp_length >> 8; 1441 desc->plcp_length_lo = plcp_length & 0xff; 1442 1443 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1444 desc->plcp_signal |= 0x08; 1445 } 1446 1447 if (!encrypt) 1448 desc->flags |= htole32(RT2560_TX_VALID); 1449 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1450 : htole32(RT2560_TX_BUSY); 1451} 1452 1453static int 1454rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1455 struct ieee80211_node *ni) 1456{ 1457 struct ieee80211vap *vap = ni->ni_vap; 1458 struct rt2560_tx_desc *desc; 1459 struct rt2560_tx_data *data; 1460 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1461 int nsegs, rate, error; 1462 1463 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1464 data = &sc->bcnq.data[sc->bcnq.cur]; 1465 1466 /* XXX maybe a separate beacon rate? */ 1467 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1468 1469 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1470 segs, &nsegs, BUS_DMA_NOWAIT); 1471 if (error != 0) { 1472 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1473 error); 1474 m_freem(m0); 1475 return error; 1476 } 1477 1478 if (ieee80211_radiotap_active_vap(vap)) { 1479 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1480 1481 tap->wt_flags = 0; 1482 tap->wt_rate = rate; 1483 tap->wt_antenna = sc->tx_ant; 1484 1485 ieee80211_radiotap_tx(vap, m0); 1486 } 1487 1488 data->m = m0; 1489 data->ni = ni; 1490 1491 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1492 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1493 1494 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1495 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1496 1497 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1498 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1499 BUS_DMASYNC_PREWRITE); 1500 1501 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1502 1503 return 0; 1504} 1505 1506static int 1507rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1508 struct ieee80211_node *ni) 1509{ 1510 struct ieee80211vap *vap = ni->ni_vap; 1511 struct ieee80211com *ic = ni->ni_ic; 1512 struct rt2560_tx_desc *desc; 1513 struct rt2560_tx_data *data; 1514 struct ieee80211_frame *wh; 1515 struct ieee80211_key *k; 1516 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1517 uint16_t dur; 1518 uint32_t flags = 0; 1519 int nsegs, rate, error; 1520 1521 desc = &sc->prioq.desc[sc->prioq.cur]; 1522 data = &sc->prioq.data[sc->prioq.cur]; 1523 1524 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1525 1526 wh = mtod(m0, struct ieee80211_frame *); 1527 1528 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1529 k = ieee80211_crypto_encap(ni, m0); 1530 if (k == NULL) { 1531 m_freem(m0); 1532 return ENOBUFS; 1533 } 1534 } 1535 1536 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1537 segs, &nsegs, 0); 1538 if (error != 0) { 1539 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1540 error); 1541 m_freem(m0); 1542 return error; 1543 } 1544 1545 if (ieee80211_radiotap_active_vap(vap)) { 1546 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1547 1548 tap->wt_flags = 0; 1549 tap->wt_rate = rate; 1550 tap->wt_antenna = sc->tx_ant; 1551 1552 ieee80211_radiotap_tx(vap, m0); 1553 } 1554 1555 data->m = m0; 1556 data->ni = ni; 1557 /* management frames are not taken into account for amrr */ 1558 data->rix = IEEE80211_FIXED_RATE_NONE; 1559 1560 wh = mtod(m0, struct ieee80211_frame *); 1561 1562 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1563 flags |= RT2560_TX_ACK; 1564 1565 dur = ieee80211_ack_duration(ic->ic_rt, 1566 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1567 *(uint16_t *)wh->i_dur = htole16(dur); 1568 1569 /* tell hardware to add timestamp for probe responses */ 1570 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1571 IEEE80211_FC0_TYPE_MGT && 1572 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1573 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1574 flags |= RT2560_TX_TIMESTAMP; 1575 } 1576 1577 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1578 segs->ds_addr); 1579 1580 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1581 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1582 BUS_DMASYNC_PREWRITE); 1583 1584 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1585 m0->m_pkthdr.len, sc->prioq.cur, rate); 1586 1587 /* kick prio */ 1588 sc->prioq.queued++; 1589 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1590 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1591 1592 return 0; 1593} 1594 1595static int 1596rt2560_sendprot(struct rt2560_softc *sc, 1597 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1598{ 1599 struct ieee80211com *ic = ni->ni_ic; 1600 const struct ieee80211_frame *wh; 1601 struct rt2560_tx_desc *desc; 1602 struct rt2560_tx_data *data; 1603 struct mbuf *mprot; 1604 int protrate, ackrate, pktlen, flags, isshort, error; 1605 uint16_t dur; 1606 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1607 int nsegs; 1608 1609 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1610 ("protection %d", prot)); 1611 1612 wh = mtod(m, const struct ieee80211_frame *); 1613 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1614 1615 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1616 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1617 1618 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1619 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1620 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1621 flags = RT2560_TX_MORE_FRAG; 1622 if (prot == IEEE80211_PROT_RTSCTS) { 1623 /* NB: CTS is the same size as an ACK */ 1624 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1625 flags |= RT2560_TX_ACK; 1626 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1627 } else { 1628 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1629 } 1630 if (mprot == NULL) { 1631 /* XXX stat + msg */ 1632 return ENOBUFS; 1633 } 1634 1635 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1636 data = &sc->txq.data[sc->txq.cur_encrypt]; 1637 1638 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1639 mprot, segs, &nsegs, 0); 1640 if (error != 0) { 1641 device_printf(sc->sc_dev, 1642 "could not map mbuf (error %d)\n", error); 1643 m_freem(mprot); 1644 return error; 1645 } 1646 1647 data->m = mprot; 1648 data->ni = ieee80211_ref_node(ni); 1649 /* ctl frames are not taken into account for amrr */ 1650 data->rix = IEEE80211_FIXED_RATE_NONE; 1651 1652 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1653 segs->ds_addr); 1654 1655 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1656 BUS_DMASYNC_PREWRITE); 1657 1658 sc->txq.queued++; 1659 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1660 1661 return 0; 1662} 1663 1664static int 1665rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1666 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1667{ 1668 struct ieee80211vap *vap = ni->ni_vap; 1669 struct ieee80211com *ic = ni->ni_ic; 1670 struct rt2560_tx_desc *desc; 1671 struct rt2560_tx_data *data; 1672 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1673 uint32_t flags; 1674 int nsegs, rate, error; 1675 1676 desc = &sc->prioq.desc[sc->prioq.cur]; 1677 data = &sc->prioq.data[sc->prioq.cur]; 1678 1679 rate = params->ibp_rate0; 1680 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1681 /* XXX fall back to mcast/mgmt rate? */ 1682 m_freem(m0); 1683 return EINVAL; 1684 } 1685 1686 flags = 0; 1687 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1688 flags |= RT2560_TX_ACK; 1689 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1690 error = rt2560_sendprot(sc, m0, ni, 1691 params->ibp_flags & IEEE80211_BPF_RTS ? 1692 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1693 rate); 1694 if (error) { 1695 m_freem(m0); 1696 return error; 1697 } 1698 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1699 } 1700 1701 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1702 segs, &nsegs, 0); 1703 if (error != 0) { 1704 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1705 error); 1706 m_freem(m0); 1707 return error; 1708 } 1709 1710 if (ieee80211_radiotap_active_vap(vap)) { 1711 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1712 1713 tap->wt_flags = 0; 1714 tap->wt_rate = rate; 1715 tap->wt_antenna = sc->tx_ant; 1716 1717 ieee80211_radiotap_tx(ni->ni_vap, m0); 1718 } 1719 1720 data->m = m0; 1721 data->ni = ni; 1722 1723 /* XXX need to setup descriptor ourself */ 1724 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1725 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1726 segs->ds_addr); 1727 1728 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1729 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1730 BUS_DMASYNC_PREWRITE); 1731 1732 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1733 m0->m_pkthdr.len, sc->prioq.cur, rate); 1734 1735 /* kick prio */ 1736 sc->prioq.queued++; 1737 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1738 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1739 1740 return 0; 1741} 1742 1743static int 1744rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1745 struct ieee80211_node *ni) 1746{ 1747 struct ieee80211vap *vap = ni->ni_vap; 1748 struct ieee80211com *ic = ni->ni_ic; 1749 struct rt2560_tx_desc *desc; 1750 struct rt2560_tx_data *data; 1751 struct ieee80211_frame *wh; 1752 const struct ieee80211_txparam *tp; 1753 struct ieee80211_key *k; 1754 struct mbuf *mnew; 1755 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1756 uint16_t dur; 1757 uint32_t flags; 1758 int nsegs, rate, error; 1759 1760 wh = mtod(m0, struct ieee80211_frame *); 1761 1762 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1763 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1764 rate = tp->mcastrate; 1765 } else if (m0->m_flags & M_EAPOL) { 1766 rate = tp->mgmtrate; 1767 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1768 rate = tp->ucastrate; 1769 } else { 1770 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1771 rate = ni->ni_txrate; 1772 } 1773 1774 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1775 k = ieee80211_crypto_encap(ni, m0); 1776 if (k == NULL) { 1777 m_freem(m0); 1778 return ENOBUFS; 1779 } 1780 1781 /* packet header may have moved, reset our local pointer */ 1782 wh = mtod(m0, struct ieee80211_frame *); 1783 } 1784 1785 flags = 0; 1786 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1787 int prot = IEEE80211_PROT_NONE; 1788 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1789 prot = IEEE80211_PROT_RTSCTS; 1790 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1791 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1792 prot = ic->ic_protmode; 1793 if (prot != IEEE80211_PROT_NONE) { 1794 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1795 if (error) { 1796 m_freem(m0); 1797 return error; 1798 } 1799 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1800 } 1801 } 1802 1803 data = &sc->txq.data[sc->txq.cur_encrypt]; 1804 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1805 1806 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1807 segs, &nsegs, 0); 1808 if (error != 0 && error != EFBIG) { 1809 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1810 error); 1811 m_freem(m0); 1812 return error; 1813 } 1814 if (error != 0) { 1815 mnew = m_defrag(m0, M_NOWAIT); 1816 if (mnew == NULL) { 1817 device_printf(sc->sc_dev, 1818 "could not defragment mbuf\n"); 1819 m_freem(m0); 1820 return ENOBUFS; 1821 } 1822 m0 = mnew; 1823 1824 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1825 m0, segs, &nsegs, 0); 1826 if (error != 0) { 1827 device_printf(sc->sc_dev, 1828 "could not map mbuf (error %d)\n", error); 1829 m_freem(m0); 1830 return error; 1831 } 1832 1833 /* packet header may have moved, reset our local pointer */ 1834 wh = mtod(m0, struct ieee80211_frame *); 1835 } 1836 1837 if (ieee80211_radiotap_active_vap(vap)) { 1838 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1839 1840 tap->wt_flags = 0; 1841 tap->wt_rate = rate; 1842 tap->wt_antenna = sc->tx_ant; 1843 1844 ieee80211_radiotap_tx(vap, m0); 1845 } 1846 1847 data->m = m0; 1848 data->ni = ni; 1849 1850 /* remember link conditions for rate adaptation algorithm */ 1851 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1852 data->rix = ni->ni_txrate; 1853 /* XXX probably need last rssi value and not avg */ 1854 data->rssi = ic->ic_node_getrssi(ni); 1855 } else 1856 data->rix = IEEE80211_FIXED_RATE_NONE; 1857 1858 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1859 flags |= RT2560_TX_ACK; 1860 1861 dur = ieee80211_ack_duration(ic->ic_rt, 1862 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1863 *(uint16_t *)wh->i_dur = htole16(dur); 1864 } 1865 1866 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1867 segs->ds_addr); 1868 1869 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1870 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1871 BUS_DMASYNC_PREWRITE); 1872 1873 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1874 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1875 1876 /* kick encrypt */ 1877 sc->txq.queued++; 1878 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1879 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1880 1881 return 0; 1882} 1883 1884static int 1885rt2560_transmit(struct ieee80211com *ic, struct mbuf *m) 1886{ 1887 struct rt2560_softc *sc = ic->ic_softc; 1888 int error; 1889 1890 RAL_LOCK(sc); 1891 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1892 RAL_UNLOCK(sc); 1893 return (ENXIO); 1894 } 1895 error = mbufq_enqueue(&sc->sc_snd, m); 1896 if (error) { 1897 RAL_UNLOCK(sc); 1898 return (error); 1899 } 1900 rt2560_start(sc); 1901 RAL_UNLOCK(sc); 1902 1903 return (0); 1904} 1905 1906static void 1907rt2560_start(struct rt2560_softc *sc) 1908{ 1909 struct ieee80211_node *ni; 1910 struct mbuf *m; 1911 1912 RAL_LOCK_ASSERT(sc); 1913 1914 while (sc->txq.queued < RT2560_TX_RING_COUNT - 1 && 1915 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1916 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1917 if (rt2560_tx_data(sc, m, ni) != 0) { 1918 if_inc_counter(ni->ni_vap->iv_ifp, 1919 IFCOUNTER_OERRORS, 1); 1920 ieee80211_free_node(ni); 1921 break; 1922 } 1923 sc->sc_tx_timer = 5; 1924 } 1925} 1926 1927static void 1928rt2560_watchdog(void *arg) 1929{ 1930 struct rt2560_softc *sc = arg; 1931 1932 RAL_LOCK_ASSERT(sc); 1933 1934 KASSERT(sc->sc_flags & RT2560_F_RUNNING, ("not running")); 1935 1936 if (sc->sc_invalid) /* card ejected */ 1937 return; 1938 1939 rt2560_encryption_intr(sc); 1940 rt2560_tx_intr(sc); 1941 1942 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1943 device_printf(sc->sc_dev, "device timeout\n"); 1944 rt2560_init_locked(sc); 1945 counter_u64_add(sc->sc_ic.ic_oerrors, 1); 1946 /* NB: callout is reset in rt2560_init() */ 1947 return; 1948 } 1949 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1950} 1951 1952static void 1953rt2560_parent(struct ieee80211com *ic) 1954{ 1955 struct rt2560_softc *sc = ic->ic_softc; 1956 int startall = 0; 1957 1958 RAL_LOCK(sc); 1959 if (ic->ic_nrunning > 0) { 1960 if ((sc->sc_flags & RT2560_F_RUNNING) == 0) { 1961 rt2560_init_locked(sc); 1962 startall = 1; 1963 } else 1964 rt2560_update_promisc(ic); 1965 } else if (sc->sc_flags & RT2560_F_RUNNING) 1966 rt2560_stop_locked(sc); 1967 RAL_UNLOCK(sc); 1968 if (startall) 1969 ieee80211_start_all(ic); 1970} 1971 1972static void 1973rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 1974{ 1975 uint32_t tmp; 1976 int ntries; 1977 1978 for (ntries = 0; ntries < 100; ntries++) { 1979 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 1980 break; 1981 DELAY(1); 1982 } 1983 if (ntries == 100) { 1984 device_printf(sc->sc_dev, "could not write to BBP\n"); 1985 return; 1986 } 1987 1988 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 1989 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 1990 1991 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 1992} 1993 1994static uint8_t 1995rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 1996{ 1997 uint32_t val; 1998 int ntries; 1999 2000 for (ntries = 0; ntries < 100; ntries++) { 2001 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2002 break; 2003 DELAY(1); 2004 } 2005 if (ntries == 100) { 2006 device_printf(sc->sc_dev, "could not read from BBP\n"); 2007 return 0; 2008 } 2009 2010 val = RT2560_BBP_BUSY | reg << 8; 2011 RAL_WRITE(sc, RT2560_BBPCSR, val); 2012 2013 for (ntries = 0; ntries < 100; ntries++) { 2014 val = RAL_READ(sc, RT2560_BBPCSR); 2015 if (!(val & RT2560_BBP_BUSY)) 2016 return val & 0xff; 2017 DELAY(1); 2018 } 2019 2020 device_printf(sc->sc_dev, "could not read from BBP\n"); 2021 return 0; 2022} 2023 2024static void 2025rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2026{ 2027 uint32_t tmp; 2028 int ntries; 2029 2030 for (ntries = 0; ntries < 100; ntries++) { 2031 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2032 break; 2033 DELAY(1); 2034 } 2035 if (ntries == 100) { 2036 device_printf(sc->sc_dev, "could not write to RF\n"); 2037 return; 2038 } 2039 2040 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2041 (reg & 0x3); 2042 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2043 2044 /* remember last written value in sc */ 2045 sc->rf_regs[reg] = val; 2046 2047 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2048} 2049 2050static void 2051rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2052{ 2053 struct ieee80211com *ic = &sc->sc_ic; 2054 uint8_t power, tmp; 2055 u_int i, chan; 2056 2057 chan = ieee80211_chan2ieee(ic, c); 2058 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2059 2060 if (IEEE80211_IS_CHAN_2GHZ(c)) 2061 power = min(sc->txpow[chan - 1], 31); 2062 else 2063 power = 31; 2064 2065 /* adjust txpower using ifconfig settings */ 2066 power -= (100 - ic->ic_txpowlimit) / 8; 2067 2068 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2069 2070 switch (sc->rf_rev) { 2071 case RT2560_RF_2522: 2072 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2073 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2074 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2075 break; 2076 2077 case RT2560_RF_2523: 2078 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2079 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2080 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2081 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2082 break; 2083 2084 case RT2560_RF_2524: 2085 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2086 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2087 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2088 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2089 break; 2090 2091 case RT2560_RF_2525: 2092 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2093 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2094 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2095 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2096 2097 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2098 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2099 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2100 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2101 break; 2102 2103 case RT2560_RF_2525E: 2104 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2105 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2106 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2107 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2108 break; 2109 2110 case RT2560_RF_2526: 2111 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2112 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2113 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2114 2115 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2116 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2117 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2118 break; 2119 2120 /* dual-band RF */ 2121 case RT2560_RF_5222: 2122 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2123 2124 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2125 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2126 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2127 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2128 break; 2129 default: 2130 printf("unknown ral rev=%d\n", sc->rf_rev); 2131 } 2132 2133 /* XXX */ 2134 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2135 /* set Japan filter bit for channel 14 */ 2136 tmp = rt2560_bbp_read(sc, 70); 2137 2138 tmp &= ~RT2560_JAPAN_FILTER; 2139 if (chan == 14) 2140 tmp |= RT2560_JAPAN_FILTER; 2141 2142 rt2560_bbp_write(sc, 70, tmp); 2143 2144 /* clear CRC errors */ 2145 RAL_READ(sc, RT2560_CNT0); 2146 } 2147} 2148 2149static void 2150rt2560_getradiocaps(struct ieee80211com *ic, 2151 int maxchans, int *nchans, struct ieee80211_channel chans[]) 2152{ 2153 struct rt2560_softc *sc = ic->ic_softc; 2154 uint8_t bands[IEEE80211_MODE_BYTES]; 2155 2156 memset(bands, 0, sizeof(bands)); 2157 setbit(bands, IEEE80211_MODE_11B); 2158 setbit(bands, IEEE80211_MODE_11G); 2159 ieee80211_add_channel_list_2ghz(chans, maxchans, nchans, 2160 rt2560_chan_2ghz, nitems(rt2560_chan_2ghz), bands, 0); 2161 2162 if (sc->rf_rev == RT2560_RF_5222) { 2163 setbit(bands, IEEE80211_MODE_11A); 2164 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans, 2165 rt2560_chan_5ghz, nitems(rt2560_chan_5ghz), bands, 0); 2166 } 2167} 2168 2169static void 2170rt2560_set_channel(struct ieee80211com *ic) 2171{ 2172 struct rt2560_softc *sc = ic->ic_softc; 2173 2174 RAL_LOCK(sc); 2175 rt2560_set_chan(sc, ic->ic_curchan); 2176 RAL_UNLOCK(sc); 2177 2178} 2179 2180#if 0 2181/* 2182 * Disable RF auto-tuning. 2183 */ 2184static void 2185rt2560_disable_rf_tune(struct rt2560_softc *sc) 2186{ 2187 uint32_t tmp; 2188 2189 if (sc->rf_rev != RT2560_RF_2523) { 2190 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2191 rt2560_rf_write(sc, RAL_RF1, tmp); 2192 } 2193 2194 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2195 rt2560_rf_write(sc, RAL_RF3, tmp); 2196 2197 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2198} 2199#endif 2200 2201/* 2202 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2203 * synchronization. 2204 */ 2205static void 2206rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2207{ 2208 struct ieee80211com *ic = &sc->sc_ic; 2209 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2210 uint16_t logcwmin, preload; 2211 uint32_t tmp; 2212 2213 /* first, disable TSF synchronization */ 2214 RAL_WRITE(sc, RT2560_CSR14, 0); 2215 2216 tmp = 16 * vap->iv_bss->ni_intval; 2217 RAL_WRITE(sc, RT2560_CSR12, tmp); 2218 2219 RAL_WRITE(sc, RT2560_CSR13, 0); 2220 2221 logcwmin = 5; 2222 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2223 tmp = logcwmin << 16 | preload; 2224 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2225 2226 /* finally, enable TSF synchronization */ 2227 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2228 if (ic->ic_opmode == IEEE80211_M_STA) 2229 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2230 else 2231 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2232 RT2560_ENABLE_BEACON_GENERATOR; 2233 RAL_WRITE(sc, RT2560_CSR14, tmp); 2234 2235 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2236} 2237 2238static void 2239rt2560_enable_tsf(struct rt2560_softc *sc) 2240{ 2241 RAL_WRITE(sc, RT2560_CSR14, 0); 2242 RAL_WRITE(sc, RT2560_CSR14, 2243 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2244} 2245 2246static void 2247rt2560_update_plcp(struct rt2560_softc *sc) 2248{ 2249 struct ieee80211com *ic = &sc->sc_ic; 2250 2251 /* no short preamble for 1Mbps */ 2252 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2253 2254 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2255 /* values taken from the reference driver */ 2256 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2257 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2258 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2259 } else { 2260 /* same values as above or'ed 0x8 */ 2261 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2262 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2263 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2264 } 2265 2266 DPRINTF(sc, "updating PLCP for %s preamble\n", 2267 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2268} 2269 2270/* 2271 * This function can be called by ieee80211_set_shortslottime(). Refer to 2272 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2273 */ 2274static void 2275rt2560_update_slot(struct ieee80211com *ic) 2276{ 2277 struct rt2560_softc *sc = ic->ic_softc; 2278 uint8_t slottime; 2279 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2280 uint32_t tmp; 2281 2282#ifndef FORCE_SLOTTIME 2283 slottime = IEEE80211_GET_SLOTTIME(ic); 2284#else 2285 /* 2286 * Setting slot time according to "short slot time" capability 2287 * in beacon/probe_resp seems to cause problem to acknowledge 2288 * certain AP's data frames transimitted at CCK/DS rates: the 2289 * problematic AP keeps retransmitting data frames, probably 2290 * because MAC level acks are not received by hardware. 2291 * So we cheat a little bit here by claiming we are capable of 2292 * "short slot time" but setting hardware slot time to the normal 2293 * slot time. ral(4) does not seem to have trouble to receive 2294 * frames transmitted using short slot time even if hardware 2295 * slot time is set to normal slot time. If we didn't use this 2296 * trick, we would have to claim that short slot time is not 2297 * supported; this would give relative poor RX performance 2298 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2299 * slot time. 2300 */ 2301 slottime = IEEE80211_DUR_SLOT; 2302#endif 2303 2304 /* update the MAC slot boundaries */ 2305 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2306 tx_pifs = tx_sifs + slottime; 2307 tx_difs = IEEE80211_DUR_DIFS(tx_sifs, slottime); 2308 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2309 2310 tmp = RAL_READ(sc, RT2560_CSR11); 2311 tmp = (tmp & ~0x1f00) | slottime << 8; 2312 RAL_WRITE(sc, RT2560_CSR11, tmp); 2313 2314 tmp = tx_pifs << 16 | tx_sifs; 2315 RAL_WRITE(sc, RT2560_CSR18, tmp); 2316 2317 tmp = eifs << 16 | tx_difs; 2318 RAL_WRITE(sc, RT2560_CSR19, tmp); 2319 2320 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2321} 2322 2323static void 2324rt2560_set_basicrates(struct rt2560_softc *sc, 2325 const struct ieee80211_rateset *rs) 2326{ 2327 struct ieee80211com *ic = &sc->sc_ic; 2328 uint32_t mask = 0; 2329 uint8_t rate; 2330 int i; 2331 2332 for (i = 0; i < rs->rs_nrates; i++) { 2333 rate = rs->rs_rates[i]; 2334 2335 if (!(rate & IEEE80211_RATE_BASIC)) 2336 continue; 2337 2338 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, 2339 IEEE80211_RV(rate)); 2340 } 2341 2342 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2343 2344 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2345} 2346 2347static void 2348rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2349{ 2350 uint32_t tmp; 2351 2352 /* set ON period to 70ms and OFF period to 30ms */ 2353 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2354 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2355} 2356 2357static void 2358rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2359{ 2360 uint32_t tmp; 2361 2362 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2363 RAL_WRITE(sc, RT2560_CSR5, tmp); 2364 2365 tmp = bssid[4] | bssid[5] << 8; 2366 RAL_WRITE(sc, RT2560_CSR6, tmp); 2367 2368 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2369} 2370 2371static void 2372rt2560_set_macaddr(struct rt2560_softc *sc, const uint8_t *addr) 2373{ 2374 uint32_t tmp; 2375 2376 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2377 RAL_WRITE(sc, RT2560_CSR3, tmp); 2378 2379 tmp = addr[4] | addr[5] << 8; 2380 RAL_WRITE(sc, RT2560_CSR4, tmp); 2381 2382 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2383} 2384 2385static void 2386rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2387{ 2388 uint32_t tmp; 2389 2390 tmp = RAL_READ(sc, RT2560_CSR3); 2391 addr[0] = tmp & 0xff; 2392 addr[1] = (tmp >> 8) & 0xff; 2393 addr[2] = (tmp >> 16) & 0xff; 2394 addr[3] = (tmp >> 24); 2395 2396 tmp = RAL_READ(sc, RT2560_CSR4); 2397 addr[4] = tmp & 0xff; 2398 addr[5] = (tmp >> 8) & 0xff; 2399} 2400 2401static void 2402rt2560_update_promisc(struct ieee80211com *ic) 2403{ 2404 struct rt2560_softc *sc = ic->ic_softc; 2405 uint32_t tmp; 2406 2407 tmp = RAL_READ(sc, RT2560_RXCSR0); 2408 2409 tmp &= ~RT2560_DROP_NOT_TO_ME; 2410 if (ic->ic_promisc == 0) 2411 tmp |= RT2560_DROP_NOT_TO_ME; 2412 2413 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2414 2415 DPRINTF(sc, "%s promiscuous mode\n", 2416 (ic->ic_promisc > 0) ? "entering" : "leaving"); 2417} 2418 2419static const char * 2420rt2560_get_rf(int rev) 2421{ 2422 switch (rev) { 2423 case RT2560_RF_2522: return "RT2522"; 2424 case RT2560_RF_2523: return "RT2523"; 2425 case RT2560_RF_2524: return "RT2524"; 2426 case RT2560_RF_2525: return "RT2525"; 2427 case RT2560_RF_2525E: return "RT2525e"; 2428 case RT2560_RF_2526: return "RT2526"; 2429 case RT2560_RF_5222: return "RT5222"; 2430 default: return "unknown"; 2431 } 2432} 2433 2434static void 2435rt2560_read_config(struct rt2560_softc *sc) 2436{ 2437 uint16_t val; 2438 int i; 2439 2440 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2441 sc->rf_rev = (val >> 11) & 0x7; 2442 sc->hw_radio = (val >> 10) & 0x1; 2443 sc->led_mode = (val >> 6) & 0x7; 2444 sc->rx_ant = (val >> 4) & 0x3; 2445 sc->tx_ant = (val >> 2) & 0x3; 2446 sc->nb_ant = val & 0x3; 2447 2448 /* read default values for BBP registers */ 2449 for (i = 0; i < 16; i++) { 2450 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2451 if (val == 0 || val == 0xffff) 2452 continue; 2453 2454 sc->bbp_prom[i].reg = val >> 8; 2455 sc->bbp_prom[i].val = val & 0xff; 2456 } 2457 2458 /* read Tx power for all b/g channels */ 2459 for (i = 0; i < 14 / 2; i++) { 2460 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2461 sc->txpow[i * 2] = val & 0xff; 2462 sc->txpow[i * 2 + 1] = val >> 8; 2463 } 2464 for (i = 0; i < 14; ++i) { 2465 if (sc->txpow[i] > 31) 2466 sc->txpow[i] = 24; 2467 } 2468 2469 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2470 if ((val & 0xff) == 0xff) 2471 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2472 else 2473 sc->rssi_corr = val & 0xff; 2474 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2475 sc->rssi_corr, val); 2476} 2477 2478 2479static void 2480rt2560_scan_start(struct ieee80211com *ic) 2481{ 2482 struct rt2560_softc *sc = ic->ic_softc; 2483 2484 /* abort TSF synchronization */ 2485 RAL_WRITE(sc, RT2560_CSR14, 0); 2486 rt2560_set_bssid(sc, ieee80211broadcastaddr); 2487} 2488 2489static void 2490rt2560_scan_end(struct ieee80211com *ic) 2491{ 2492 struct rt2560_softc *sc = ic->ic_softc; 2493 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2494 2495 rt2560_enable_tsf_sync(sc); 2496 /* XXX keep local copy */ 2497 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2498} 2499 2500static int 2501rt2560_bbp_init(struct rt2560_softc *sc) 2502{ 2503 int i, ntries; 2504 2505 /* wait for BBP to be ready */ 2506 for (ntries = 0; ntries < 100; ntries++) { 2507 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2508 break; 2509 DELAY(1); 2510 } 2511 if (ntries == 100) { 2512 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2513 return EIO; 2514 } 2515 2516 /* initialize BBP registers to default values */ 2517 for (i = 0; i < nitems(rt2560_def_bbp); i++) { 2518 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2519 rt2560_def_bbp[i].val); 2520 } 2521 2522 /* initialize BBP registers to values stored in EEPROM */ 2523 for (i = 0; i < 16; i++) { 2524 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2525 break; 2526 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2527 } 2528 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2529 2530 return 0; 2531} 2532 2533static void 2534rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2535{ 2536 uint32_t tmp; 2537 uint8_t tx; 2538 2539 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2540 if (antenna == 1) 2541 tx |= RT2560_BBP_ANTA; 2542 else if (antenna == 2) 2543 tx |= RT2560_BBP_ANTB; 2544 else 2545 tx |= RT2560_BBP_DIVERSITY; 2546 2547 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2548 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2549 sc->rf_rev == RT2560_RF_5222) 2550 tx |= RT2560_BBP_FLIPIQ; 2551 2552 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2553 2554 /* update values for CCK and OFDM in BBPCSR1 */ 2555 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2556 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2557 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2558} 2559 2560static void 2561rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2562{ 2563 uint8_t rx; 2564 2565 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2566 if (antenna == 1) 2567 rx |= RT2560_BBP_ANTA; 2568 else if (antenna == 2) 2569 rx |= RT2560_BBP_ANTB; 2570 else 2571 rx |= RT2560_BBP_DIVERSITY; 2572 2573 /* need to force no I/Q flip for RF 2525e and 2526 */ 2574 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2575 rx &= ~RT2560_BBP_FLIPIQ; 2576 2577 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2578} 2579 2580static void 2581rt2560_init_locked(struct rt2560_softc *sc) 2582{ 2583 struct ieee80211com *ic = &sc->sc_ic; 2584 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2585 uint32_t tmp; 2586 int i; 2587 2588 RAL_LOCK_ASSERT(sc); 2589 2590 rt2560_stop_locked(sc); 2591 2592 /* setup tx rings */ 2593 tmp = RT2560_PRIO_RING_COUNT << 24 | 2594 RT2560_ATIM_RING_COUNT << 16 | 2595 RT2560_TX_RING_COUNT << 8 | 2596 RT2560_TX_DESC_SIZE; 2597 2598 /* rings must be initialized in this exact order */ 2599 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2600 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2601 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2602 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2603 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2604 2605 /* setup rx ring */ 2606 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2607 2608 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2609 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2610 2611 /* initialize MAC registers to default values */ 2612 for (i = 0; i < nitems(rt2560_def_mac); i++) 2613 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2614 2615 rt2560_set_macaddr(sc, vap ? vap->iv_myaddr : ic->ic_macaddr); 2616 2617 /* set basic rate set (will be updated later) */ 2618 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2619 2620 rt2560_update_slot(ic); 2621 rt2560_update_plcp(sc); 2622 rt2560_update_led(sc, 0, 0); 2623 2624 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2625 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2626 2627 if (rt2560_bbp_init(sc) != 0) { 2628 rt2560_stop_locked(sc); 2629 return; 2630 } 2631 2632 rt2560_set_txantenna(sc, sc->tx_ant); 2633 rt2560_set_rxantenna(sc, sc->rx_ant); 2634 2635 /* set default BSS channel */ 2636 rt2560_set_chan(sc, ic->ic_curchan); 2637 2638 /* kick Rx */ 2639 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2640 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2641 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2642 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2643 ic->ic_opmode != IEEE80211_M_MBSS) 2644 tmp |= RT2560_DROP_TODS; 2645 if (ic->ic_promisc == 0) 2646 tmp |= RT2560_DROP_NOT_TO_ME; 2647 } 2648 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2649 2650 /* clear old FCS and Rx FIFO errors */ 2651 RAL_READ(sc, RT2560_CNT0); 2652 RAL_READ(sc, RT2560_CNT4); 2653 2654 /* clear any pending interrupts */ 2655 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2656 2657 /* enable interrupts */ 2658 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2659 2660 sc->sc_flags |= RT2560_F_RUNNING; 2661 2662 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2663} 2664 2665static void 2666rt2560_init(void *priv) 2667{ 2668 struct rt2560_softc *sc = priv; 2669 struct ieee80211com *ic = &sc->sc_ic; 2670 2671 RAL_LOCK(sc); 2672 rt2560_init_locked(sc); 2673 RAL_UNLOCK(sc); 2674 2675 if (sc->sc_flags & RT2560_F_RUNNING) 2676 ieee80211_start_all(ic); /* start all vap's */ 2677} 2678 2679static void 2680rt2560_stop_locked(struct rt2560_softc *sc) 2681{ 2682 volatile int *flags = &sc->sc_flags; 2683 2684 RAL_LOCK_ASSERT(sc); 2685 2686 while (*flags & RT2560_F_INPUT_RUNNING) 2687 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2688 2689 callout_stop(&sc->watchdog_ch); 2690 sc->sc_tx_timer = 0; 2691 2692 if (sc->sc_flags & RT2560_F_RUNNING) { 2693 sc->sc_flags &= ~RT2560_F_RUNNING; 2694 2695 /* abort Tx */ 2696 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2697 2698 /* disable Rx */ 2699 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2700 2701 /* reset ASIC (imply reset BBP) */ 2702 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2703 RAL_WRITE(sc, RT2560_CSR1, 0); 2704 2705 /* disable interrupts */ 2706 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2707 2708 /* reset Tx and Rx rings */ 2709 rt2560_reset_tx_ring(sc, &sc->txq); 2710 rt2560_reset_tx_ring(sc, &sc->atimq); 2711 rt2560_reset_tx_ring(sc, &sc->prioq); 2712 rt2560_reset_tx_ring(sc, &sc->bcnq); 2713 rt2560_reset_rx_ring(sc, &sc->rxq); 2714 } 2715} 2716 2717void 2718rt2560_stop(void *arg) 2719{ 2720 struct rt2560_softc *sc = arg; 2721 2722 RAL_LOCK(sc); 2723 rt2560_stop_locked(sc); 2724 RAL_UNLOCK(sc); 2725} 2726 2727static int 2728rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2729 const struct ieee80211_bpf_params *params) 2730{ 2731 struct ieee80211com *ic = ni->ni_ic; 2732 struct rt2560_softc *sc = ic->ic_softc; 2733 2734 RAL_LOCK(sc); 2735 2736 /* prevent management frames from being sent if we're not ready */ 2737 if (!(sc->sc_flags & RT2560_F_RUNNING)) { 2738 RAL_UNLOCK(sc); 2739 m_freem(m); 2740 return ENETDOWN; 2741 } 2742 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2743 RAL_UNLOCK(sc); 2744 m_freem(m); 2745 return ENOBUFS; /* XXX */ 2746 } 2747 2748 if (params == NULL) { 2749 /* 2750 * Legacy path; interpret frame contents to decide 2751 * precisely how to send the frame. 2752 */ 2753 if (rt2560_tx_mgt(sc, m, ni) != 0) 2754 goto bad; 2755 } else { 2756 /* 2757 * Caller supplied explicit parameters to use in 2758 * sending the frame. 2759 */ 2760 if (rt2560_tx_raw(sc, m, ni, params)) 2761 goto bad; 2762 } 2763 sc->sc_tx_timer = 5; 2764 2765 RAL_UNLOCK(sc); 2766 2767 return 0; 2768bad: 2769 RAL_UNLOCK(sc); 2770 return EIO; /* XXX */ 2771} 2772