rt2661.c revision 206358
1/* $FreeBSD: head/sys/dev/ral/rt2661.c 206358 2010-04-07 15:29:13Z rpaulo $ */ 2 3/*- 4 * Copyright (c) 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/rt2661.c 206358 2010-04-07 15:29:13Z rpaulo $"); 22 23/*- 24 * Ralink Technology RT2561, RT2561S and RT2661 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#include <sys/firmware.h> 42 43#include <machine/bus.h> 44#include <machine/resource.h> 45#include <sys/rman.h> 46 47#include <net/bpf.h> 48#include <net/if.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/rt2661reg.h> 67#include <dev/ral/rt2661var.h> 68 69#define RAL_DEBUG 70#ifdef RAL_DEBUG 71#define DPRINTF(sc, fmt, ...) do { \ 72 if (sc->sc_debug > 0) \ 73 printf(fmt, __VA_ARGS__); \ 74} while (0) 75#define DPRINTFN(sc, n, fmt, ...) do { \ 76 if (sc->sc_debug >= (n)) \ 77 printf(fmt, __VA_ARGS__); \ 78} while (0) 79#else 80#define DPRINTF(sc, fmt, ...) 81#define DPRINTFN(sc, n, fmt, ...) 82#endif 83 84static struct ieee80211vap *rt2661_vap_create(struct ieee80211com *, 85 const char name[IFNAMSIZ], int unit, int opmode, 86 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 87 const uint8_t mac[IEEE80211_ADDR_LEN]); 88static void rt2661_vap_delete(struct ieee80211vap *); 89static void rt2661_dma_map_addr(void *, bus_dma_segment_t *, int, 90 int); 91static int rt2661_alloc_tx_ring(struct rt2661_softc *, 92 struct rt2661_tx_ring *, int); 93static void rt2661_reset_tx_ring(struct rt2661_softc *, 94 struct rt2661_tx_ring *); 95static void rt2661_free_tx_ring(struct rt2661_softc *, 96 struct rt2661_tx_ring *); 97static int rt2661_alloc_rx_ring(struct rt2661_softc *, 98 struct rt2661_rx_ring *, int); 99static void rt2661_reset_rx_ring(struct rt2661_softc *, 100 struct rt2661_rx_ring *); 101static void rt2661_free_rx_ring(struct rt2661_softc *, 102 struct rt2661_rx_ring *); 103static void rt2661_newassoc(struct ieee80211_node *, int); 104static int rt2661_newstate(struct ieee80211vap *, 105 enum ieee80211_state, int); 106static uint16_t rt2661_eeprom_read(struct rt2661_softc *, uint8_t); 107static void rt2661_rx_intr(struct rt2661_softc *); 108static void rt2661_tx_intr(struct rt2661_softc *); 109static void rt2661_tx_dma_intr(struct rt2661_softc *, 110 struct rt2661_tx_ring *); 111static void rt2661_mcu_beacon_expire(struct rt2661_softc *); 112static void rt2661_mcu_wakeup(struct rt2661_softc *); 113static void rt2661_mcu_cmd_intr(struct rt2661_softc *); 114static void rt2661_scan_start(struct ieee80211com *); 115static void rt2661_scan_end(struct ieee80211com *); 116static void rt2661_set_channel(struct ieee80211com *); 117static void rt2661_setup_tx_desc(struct rt2661_softc *, 118 struct rt2661_tx_desc *, uint32_t, uint16_t, int, 119 int, const bus_dma_segment_t *, int, int); 120static int rt2661_tx_data(struct rt2661_softc *, struct mbuf *, 121 struct ieee80211_node *, int); 122static int rt2661_tx_mgt(struct rt2661_softc *, struct mbuf *, 123 struct ieee80211_node *); 124static void rt2661_start_locked(struct ifnet *); 125static void rt2661_start(struct ifnet *); 126static int rt2661_raw_xmit(struct ieee80211_node *, struct mbuf *, 127 const struct ieee80211_bpf_params *); 128static void rt2661_watchdog(void *); 129static int rt2661_ioctl(struct ifnet *, u_long, caddr_t); 130static void rt2661_bbp_write(struct rt2661_softc *, uint8_t, 131 uint8_t); 132static uint8_t rt2661_bbp_read(struct rt2661_softc *, uint8_t); 133static void rt2661_rf_write(struct rt2661_softc *, uint8_t, 134 uint32_t); 135static int rt2661_tx_cmd(struct rt2661_softc *, uint8_t, 136 uint16_t); 137static void rt2661_select_antenna(struct rt2661_softc *); 138static void rt2661_enable_mrr(struct rt2661_softc *); 139static void rt2661_set_txpreamble(struct rt2661_softc *); 140static void rt2661_set_basicrates(struct rt2661_softc *, 141 const struct ieee80211_rateset *); 142static void rt2661_select_band(struct rt2661_softc *, 143 struct ieee80211_channel *); 144static void rt2661_set_chan(struct rt2661_softc *, 145 struct ieee80211_channel *); 146static void rt2661_set_bssid(struct rt2661_softc *, 147 const uint8_t *); 148static void rt2661_set_macaddr(struct rt2661_softc *, 149 const uint8_t *); 150static void rt2661_update_promisc(struct ifnet *); 151static int rt2661_wme_update(struct ieee80211com *) __unused; 152static void rt2661_update_slot(struct ifnet *); 153static const char *rt2661_get_rf(int); 154static void rt2661_read_eeprom(struct rt2661_softc *, 155 uint8_t macaddr[IEEE80211_ADDR_LEN]); 156static int rt2661_bbp_init(struct rt2661_softc *); 157static void rt2661_init_locked(struct rt2661_softc *); 158static void rt2661_init(void *); 159static void rt2661_stop_locked(struct rt2661_softc *); 160static void rt2661_stop(void *); 161static int rt2661_load_microcode(struct rt2661_softc *); 162#ifdef notyet 163static void rt2661_rx_tune(struct rt2661_softc *); 164static void rt2661_radar_start(struct rt2661_softc *); 165static int rt2661_radar_stop(struct rt2661_softc *); 166#endif 167static int rt2661_prepare_beacon(struct rt2661_softc *, 168 struct ieee80211vap *); 169static void rt2661_enable_tsf_sync(struct rt2661_softc *); 170static void rt2661_enable_tsf(struct rt2661_softc *); 171static int rt2661_get_rssi(struct rt2661_softc *, uint8_t); 172 173static const struct { 174 uint32_t reg; 175 uint32_t val; 176} rt2661_def_mac[] = { 177 RT2661_DEF_MAC 178}; 179 180static const struct { 181 uint8_t reg; 182 uint8_t val; 183} rt2661_def_bbp[] = { 184 RT2661_DEF_BBP 185}; 186 187static const struct rfprog { 188 uint8_t chan; 189 uint32_t r1, r2, r3, r4; 190} rt2661_rf5225_1[] = { 191 RT2661_RF5225_1 192}, rt2661_rf5225_2[] = { 193 RT2661_RF5225_2 194}; 195 196int 197rt2661_attach(device_t dev, int id) 198{ 199 struct rt2661_softc *sc = device_get_softc(dev); 200 struct ieee80211com *ic; 201 struct ifnet *ifp; 202 uint32_t val; 203 int error, ac, ntries; 204 uint8_t bands; 205 uint8_t macaddr[IEEE80211_ADDR_LEN]; 206 207 sc->sc_id = id; 208 sc->sc_dev = dev; 209 210 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 211 if (ifp == NULL) { 212 device_printf(sc->sc_dev, "can not if_alloc()\n"); 213 return ENOMEM; 214 } 215 ic = ifp->if_l2com; 216 217 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 218 MTX_DEF | MTX_RECURSE); 219 220 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 221 222 /* wait for NIC to initialize */ 223 for (ntries = 0; ntries < 1000; ntries++) { 224 if ((val = RAL_READ(sc, RT2661_MAC_CSR0)) != 0) 225 break; 226 DELAY(1000); 227 } 228 if (ntries == 1000) { 229 device_printf(sc->sc_dev, 230 "timeout waiting for NIC to initialize\n"); 231 error = EIO; 232 goto fail1; 233 } 234 235 /* retrieve RF rev. no and various other things from EEPROM */ 236 rt2661_read_eeprom(sc, macaddr); 237 238 device_printf(dev, "MAC/BBP RT%X, RF %s\n", val, 239 rt2661_get_rf(sc->rf_rev)); 240 241 /* 242 * Allocate Tx and Rx rings. 243 */ 244 for (ac = 0; ac < 4; ac++) { 245 error = rt2661_alloc_tx_ring(sc, &sc->txq[ac], 246 RT2661_TX_RING_COUNT); 247 if (error != 0) { 248 device_printf(sc->sc_dev, 249 "could not allocate Tx ring %d\n", ac); 250 goto fail2; 251 } 252 } 253 254 error = rt2661_alloc_tx_ring(sc, &sc->mgtq, RT2661_MGT_RING_COUNT); 255 if (error != 0) { 256 device_printf(sc->sc_dev, "could not allocate Mgt ring\n"); 257 goto fail2; 258 } 259 260 error = rt2661_alloc_rx_ring(sc, &sc->rxq, RT2661_RX_RING_COUNT); 261 if (error != 0) { 262 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 263 goto fail3; 264 } 265 266 ifp->if_softc = sc; 267 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 268 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 269 ifp->if_init = rt2661_init; 270 ifp->if_ioctl = rt2661_ioctl; 271 ifp->if_start = rt2661_start; 272 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 273 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 274 IFQ_SET_READY(&ifp->if_snd); 275 276 ic->ic_ifp = ifp; 277 ic->ic_opmode = IEEE80211_M_STA; 278 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 279 280 /* set device capabilities */ 281 ic->ic_caps = 282 IEEE80211_C_STA /* station mode */ 283 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 284 | IEEE80211_C_HOSTAP /* hostap mode */ 285 | IEEE80211_C_MONITOR /* monitor mode */ 286 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 287 | IEEE80211_C_WDS /* 4-address traffic works */ 288 | IEEE80211_C_MBSS /* mesh point link mode */ 289 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 290 | IEEE80211_C_SHSLOT /* short slot time supported */ 291 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 292 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 293#ifdef notyet 294 | IEEE80211_C_TXFRAG /* handle tx frags */ 295 | IEEE80211_C_WME /* 802.11e */ 296#endif 297 ; 298 299 bands = 0; 300 setbit(&bands, IEEE80211_MODE_11B); 301 setbit(&bands, IEEE80211_MODE_11G); 302 if (sc->rf_rev == RT2661_RF_5225 || sc->rf_rev == RT2661_RF_5325) 303 setbit(&bands, IEEE80211_MODE_11A); 304 ieee80211_init_channels(ic, NULL, &bands); 305 306 ieee80211_ifattach(ic, macaddr); 307 ic->ic_newassoc = rt2661_newassoc; 308#if 0 309 ic->ic_wme.wme_update = rt2661_wme_update; 310#endif 311 ic->ic_scan_start = rt2661_scan_start; 312 ic->ic_scan_end = rt2661_scan_end; 313 ic->ic_set_channel = rt2661_set_channel; 314 ic->ic_updateslot = rt2661_update_slot; 315 ic->ic_update_promisc = rt2661_update_promisc; 316 ic->ic_raw_xmit = rt2661_raw_xmit; 317 318 ic->ic_vap_create = rt2661_vap_create; 319 ic->ic_vap_delete = rt2661_vap_delete; 320 321 ieee80211_radiotap_attach(ic, 322 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 323 RT2661_TX_RADIOTAP_PRESENT, 324 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 325 RT2661_RX_RADIOTAP_PRESENT); 326 327#ifdef RAL_DEBUG 328 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 329 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 330 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 331#endif 332 if (bootverbose) 333 ieee80211_announce(ic); 334 335 return 0; 336 337fail3: rt2661_free_tx_ring(sc, &sc->mgtq); 338fail2: while (--ac >= 0) 339 rt2661_free_tx_ring(sc, &sc->txq[ac]); 340fail1: mtx_destroy(&sc->sc_mtx); 341 if_free(ifp); 342 return error; 343} 344 345int 346rt2661_detach(void *xsc) 347{ 348 struct rt2661_softc *sc = xsc; 349 struct ifnet *ifp = sc->sc_ifp; 350 struct ieee80211com *ic = ifp->if_l2com; 351 352 RAL_LOCK(sc); 353 rt2661_stop_locked(sc); 354 RAL_UNLOCK(sc); 355 356 ieee80211_ifdetach(ic); 357 358 rt2661_free_tx_ring(sc, &sc->txq[0]); 359 rt2661_free_tx_ring(sc, &sc->txq[1]); 360 rt2661_free_tx_ring(sc, &sc->txq[2]); 361 rt2661_free_tx_ring(sc, &sc->txq[3]); 362 rt2661_free_tx_ring(sc, &sc->mgtq); 363 rt2661_free_rx_ring(sc, &sc->rxq); 364 365 if_free(ifp); 366 367 mtx_destroy(&sc->sc_mtx); 368 369 return 0; 370} 371 372static struct ieee80211vap * 373rt2661_vap_create(struct ieee80211com *ic, 374 const char name[IFNAMSIZ], int unit, int opmode, int flags, 375 const uint8_t bssid[IEEE80211_ADDR_LEN], 376 const uint8_t mac[IEEE80211_ADDR_LEN]) 377{ 378 struct ifnet *ifp = ic->ic_ifp; 379 struct rt2661_vap *rvp; 380 struct ieee80211vap *vap; 381 382 switch (opmode) { 383 case IEEE80211_M_STA: 384 case IEEE80211_M_IBSS: 385 case IEEE80211_M_AHDEMO: 386 case IEEE80211_M_MONITOR: 387 case IEEE80211_M_HOSTAP: 388 case IEEE80211_M_MBSS: 389 /* XXXRP: TBD */ 390 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 391 if_printf(ifp, "only 1 vap supported\n"); 392 return NULL; 393 } 394 if (opmode == IEEE80211_M_STA) 395 flags |= IEEE80211_CLONE_NOBEACONS; 396 break; 397 case IEEE80211_M_WDS: 398 if (TAILQ_EMPTY(&ic->ic_vaps) || 399 ic->ic_opmode != IEEE80211_M_HOSTAP) { 400 if_printf(ifp, "wds only supported in ap mode\n"); 401 return NULL; 402 } 403 /* 404 * Silently remove any request for a unique 405 * bssid; WDS vap's always share the local 406 * mac address. 407 */ 408 flags &= ~IEEE80211_CLONE_BSSID; 409 break; 410 default: 411 if_printf(ifp, "unknown opmode %d\n", opmode); 412 return NULL; 413 } 414 rvp = (struct rt2661_vap *) malloc(sizeof(struct rt2661_vap), 415 M_80211_VAP, M_NOWAIT | M_ZERO); 416 if (rvp == NULL) 417 return NULL; 418 vap = &rvp->ral_vap; 419 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 420 421 /* override state transition machine */ 422 rvp->ral_newstate = vap->iv_newstate; 423 vap->iv_newstate = rt2661_newstate; 424#if 0 425 vap->iv_update_beacon = rt2661_beacon_update; 426#endif 427 428 ieee80211_ratectl_init(vap); 429 /* complete setup */ 430 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 431 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 432 ic->ic_opmode = opmode; 433 return vap; 434} 435 436static void 437rt2661_vap_delete(struct ieee80211vap *vap) 438{ 439 struct rt2661_vap *rvp = RT2661_VAP(vap); 440 441 ieee80211_ratectl_deinit(vap); 442 ieee80211_vap_detach(vap); 443 free(rvp, M_80211_VAP); 444} 445 446void 447rt2661_shutdown(void *xsc) 448{ 449 struct rt2661_softc *sc = xsc; 450 451 rt2661_stop(sc); 452} 453 454void 455rt2661_suspend(void *xsc) 456{ 457 struct rt2661_softc *sc = xsc; 458 459 rt2661_stop(sc); 460} 461 462void 463rt2661_resume(void *xsc) 464{ 465 struct rt2661_softc *sc = xsc; 466 struct ifnet *ifp = sc->sc_ifp; 467 468 if (ifp->if_flags & IFF_UP) 469 rt2661_init(sc); 470} 471 472static void 473rt2661_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 474{ 475 if (error != 0) 476 return; 477 478 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 479 480 *(bus_addr_t *)arg = segs[0].ds_addr; 481} 482 483static int 484rt2661_alloc_tx_ring(struct rt2661_softc *sc, struct rt2661_tx_ring *ring, 485 int count) 486{ 487 int i, error; 488 489 ring->count = count; 490 ring->queued = 0; 491 ring->cur = ring->next = ring->stat = 0; 492 493 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 494 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 495 count * RT2661_TX_DESC_SIZE, 1, count * RT2661_TX_DESC_SIZE, 496 0, NULL, NULL, &ring->desc_dmat); 497 if (error != 0) { 498 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 499 goto fail; 500 } 501 502 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 503 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 504 if (error != 0) { 505 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 506 goto fail; 507 } 508 509 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 510 count * RT2661_TX_DESC_SIZE, rt2661_dma_map_addr, &ring->physaddr, 511 0); 512 if (error != 0) { 513 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 514 goto fail; 515 } 516 517 ring->data = malloc(count * sizeof (struct rt2661_tx_data), M_DEVBUF, 518 M_NOWAIT | M_ZERO); 519 if (ring->data == NULL) { 520 device_printf(sc->sc_dev, "could not allocate soft data\n"); 521 error = ENOMEM; 522 goto fail; 523 } 524 525 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 526 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 527 RT2661_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 528 if (error != 0) { 529 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 530 goto fail; 531 } 532 533 for (i = 0; i < count; i++) { 534 error = bus_dmamap_create(ring->data_dmat, 0, 535 &ring->data[i].map); 536 if (error != 0) { 537 device_printf(sc->sc_dev, "could not create DMA map\n"); 538 goto fail; 539 } 540 } 541 542 return 0; 543 544fail: rt2661_free_tx_ring(sc, ring); 545 return error; 546} 547 548static void 549rt2661_reset_tx_ring(struct rt2661_softc *sc, struct rt2661_tx_ring *ring) 550{ 551 struct rt2661_tx_desc *desc; 552 struct rt2661_tx_data *data; 553 int i; 554 555 for (i = 0; i < ring->count; i++) { 556 desc = &ring->desc[i]; 557 data = &ring->data[i]; 558 559 if (data->m != NULL) { 560 bus_dmamap_sync(ring->data_dmat, data->map, 561 BUS_DMASYNC_POSTWRITE); 562 bus_dmamap_unload(ring->data_dmat, data->map); 563 m_freem(data->m); 564 data->m = NULL; 565 } 566 567 if (data->ni != NULL) { 568 ieee80211_free_node(data->ni); 569 data->ni = NULL; 570 } 571 572 desc->flags = 0; 573 } 574 575 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 576 577 ring->queued = 0; 578 ring->cur = ring->next = ring->stat = 0; 579} 580 581static void 582rt2661_free_tx_ring(struct rt2661_softc *sc, struct rt2661_tx_ring *ring) 583{ 584 struct rt2661_tx_data *data; 585 int i; 586 587 if (ring->desc != NULL) { 588 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 589 BUS_DMASYNC_POSTWRITE); 590 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 591 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 592 } 593 594 if (ring->desc_dmat != NULL) 595 bus_dma_tag_destroy(ring->desc_dmat); 596 597 if (ring->data != NULL) { 598 for (i = 0; i < ring->count; i++) { 599 data = &ring->data[i]; 600 601 if (data->m != NULL) { 602 bus_dmamap_sync(ring->data_dmat, data->map, 603 BUS_DMASYNC_POSTWRITE); 604 bus_dmamap_unload(ring->data_dmat, data->map); 605 m_freem(data->m); 606 } 607 608 if (data->ni != NULL) 609 ieee80211_free_node(data->ni); 610 611 if (data->map != NULL) 612 bus_dmamap_destroy(ring->data_dmat, data->map); 613 } 614 615 free(ring->data, M_DEVBUF); 616 } 617 618 if (ring->data_dmat != NULL) 619 bus_dma_tag_destroy(ring->data_dmat); 620} 621 622static int 623rt2661_alloc_rx_ring(struct rt2661_softc *sc, struct rt2661_rx_ring *ring, 624 int count) 625{ 626 struct rt2661_rx_desc *desc; 627 struct rt2661_rx_data *data; 628 bus_addr_t physaddr; 629 int i, error; 630 631 ring->count = count; 632 ring->cur = ring->next = 0; 633 634 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 635 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 636 count * RT2661_RX_DESC_SIZE, 1, count * RT2661_RX_DESC_SIZE, 637 0, NULL, NULL, &ring->desc_dmat); 638 if (error != 0) { 639 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 640 goto fail; 641 } 642 643 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 644 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 645 if (error != 0) { 646 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 647 goto fail; 648 } 649 650 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 651 count * RT2661_RX_DESC_SIZE, rt2661_dma_map_addr, &ring->physaddr, 652 0); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 655 goto fail; 656 } 657 658 ring->data = malloc(count * sizeof (struct rt2661_rx_data), M_DEVBUF, 659 M_NOWAIT | M_ZERO); 660 if (ring->data == NULL) { 661 device_printf(sc->sc_dev, "could not allocate soft data\n"); 662 error = ENOMEM; 663 goto fail; 664 } 665 666 /* 667 * Pre-allocate Rx buffers and populate Rx ring. 668 */ 669 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 670 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 671 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 672 if (error != 0) { 673 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 674 goto fail; 675 } 676 677 for (i = 0; i < count; i++) { 678 desc = &sc->rxq.desc[i]; 679 data = &sc->rxq.data[i]; 680 681 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 682 if (error != 0) { 683 device_printf(sc->sc_dev, "could not create DMA map\n"); 684 goto fail; 685 } 686 687 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 688 if (data->m == NULL) { 689 device_printf(sc->sc_dev, 690 "could not allocate rx mbuf\n"); 691 error = ENOMEM; 692 goto fail; 693 } 694 695 error = bus_dmamap_load(ring->data_dmat, data->map, 696 mtod(data->m, void *), MCLBYTES, rt2661_dma_map_addr, 697 &physaddr, 0); 698 if (error != 0) { 699 device_printf(sc->sc_dev, 700 "could not load rx buf DMA map"); 701 goto fail; 702 } 703 704 desc->flags = htole32(RT2661_RX_BUSY); 705 desc->physaddr = htole32(physaddr); 706 } 707 708 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 709 710 return 0; 711 712fail: rt2661_free_rx_ring(sc, ring); 713 return error; 714} 715 716static void 717rt2661_reset_rx_ring(struct rt2661_softc *sc, struct rt2661_rx_ring *ring) 718{ 719 int i; 720 721 for (i = 0; i < ring->count; i++) 722 ring->desc[i].flags = htole32(RT2661_RX_BUSY); 723 724 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 725 726 ring->cur = ring->next = 0; 727} 728 729static void 730rt2661_free_rx_ring(struct rt2661_softc *sc, struct rt2661_rx_ring *ring) 731{ 732 struct rt2661_rx_data *data; 733 int i; 734 735 if (ring->desc != NULL) { 736 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 737 BUS_DMASYNC_POSTWRITE); 738 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 739 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 740 } 741 742 if (ring->desc_dmat != NULL) 743 bus_dma_tag_destroy(ring->desc_dmat); 744 745 if (ring->data != NULL) { 746 for (i = 0; i < ring->count; i++) { 747 data = &ring->data[i]; 748 749 if (data->m != NULL) { 750 bus_dmamap_sync(ring->data_dmat, data->map, 751 BUS_DMASYNC_POSTREAD); 752 bus_dmamap_unload(ring->data_dmat, data->map); 753 m_freem(data->m); 754 } 755 756 if (data->map != NULL) 757 bus_dmamap_destroy(ring->data_dmat, data->map); 758 } 759 760 free(ring->data, M_DEVBUF); 761 } 762 763 if (ring->data_dmat != NULL) 764 bus_dma_tag_destroy(ring->data_dmat); 765} 766 767static void 768rt2661_newassoc(struct ieee80211_node *ni, int isnew) 769{ 770 /* XXX move */ 771 ieee80211_ratectl_node_init(ni); 772} 773 774static int 775rt2661_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 776{ 777 struct rt2661_vap *rvp = RT2661_VAP(vap); 778 struct ieee80211com *ic = vap->iv_ic; 779 struct rt2661_softc *sc = ic->ic_ifp->if_softc; 780 int error; 781 782 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 783 uint32_t tmp; 784 785 /* abort TSF synchronization */ 786 tmp = RAL_READ(sc, RT2661_TXRX_CSR9); 787 RAL_WRITE(sc, RT2661_TXRX_CSR9, tmp & ~0x00ffffff); 788 } 789 790 error = rvp->ral_newstate(vap, nstate, arg); 791 792 if (error == 0 && nstate == IEEE80211_S_RUN) { 793 struct ieee80211_node *ni = vap->iv_bss; 794 795 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 796 rt2661_enable_mrr(sc); 797 rt2661_set_txpreamble(sc); 798 rt2661_set_basicrates(sc, &ni->ni_rates); 799 rt2661_set_bssid(sc, ni->ni_bssid); 800 } 801 802 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 803 vap->iv_opmode == IEEE80211_M_IBSS || 804 vap->iv_opmode == IEEE80211_M_MBSS) { 805 error = rt2661_prepare_beacon(sc, vap); 806 if (error != 0) 807 return error; 808 } 809 if (vap->iv_opmode != IEEE80211_M_MONITOR) 810 rt2661_enable_tsf_sync(sc); 811 else 812 rt2661_enable_tsf(sc); 813 } 814 return error; 815} 816 817/* 818 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 819 * 93C66). 820 */ 821static uint16_t 822rt2661_eeprom_read(struct rt2661_softc *sc, uint8_t addr) 823{ 824 uint32_t tmp; 825 uint16_t val; 826 int n; 827 828 /* clock C once before the first command */ 829 RT2661_EEPROM_CTL(sc, 0); 830 831 RT2661_EEPROM_CTL(sc, RT2661_S); 832 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_C); 833 RT2661_EEPROM_CTL(sc, RT2661_S); 834 835 /* write start bit (1) */ 836 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D); 837 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D | RT2661_C); 838 839 /* write READ opcode (10) */ 840 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D); 841 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_D | RT2661_C); 842 RT2661_EEPROM_CTL(sc, RT2661_S); 843 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_C); 844 845 /* write address (A5-A0 or A7-A0) */ 846 n = (RAL_READ(sc, RT2661_E2PROM_CSR) & RT2661_93C46) ? 5 : 7; 847 for (; n >= 0; n--) { 848 RT2661_EEPROM_CTL(sc, RT2661_S | 849 (((addr >> n) & 1) << RT2661_SHIFT_D)); 850 RT2661_EEPROM_CTL(sc, RT2661_S | 851 (((addr >> n) & 1) << RT2661_SHIFT_D) | RT2661_C); 852 } 853 854 RT2661_EEPROM_CTL(sc, RT2661_S); 855 856 /* read data Q15-Q0 */ 857 val = 0; 858 for (n = 15; n >= 0; n--) { 859 RT2661_EEPROM_CTL(sc, RT2661_S | RT2661_C); 860 tmp = RAL_READ(sc, RT2661_E2PROM_CSR); 861 val |= ((tmp & RT2661_Q) >> RT2661_SHIFT_Q) << n; 862 RT2661_EEPROM_CTL(sc, RT2661_S); 863 } 864 865 RT2661_EEPROM_CTL(sc, 0); 866 867 /* clear Chip Select and clock C */ 868 RT2661_EEPROM_CTL(sc, RT2661_S); 869 RT2661_EEPROM_CTL(sc, 0); 870 RT2661_EEPROM_CTL(sc, RT2661_C); 871 872 return val; 873} 874 875static void 876rt2661_tx_intr(struct rt2661_softc *sc) 877{ 878 struct ifnet *ifp = sc->sc_ifp; 879 struct rt2661_tx_ring *txq; 880 struct rt2661_tx_data *data; 881 uint32_t val; 882 int qid, retrycnt; 883 struct ieee80211vap *vap; 884 885 for (;;) { 886 struct ieee80211_node *ni; 887 struct mbuf *m; 888 889 val = RAL_READ(sc, RT2661_STA_CSR4); 890 if (!(val & RT2661_TX_STAT_VALID)) 891 break; 892 893 /* retrieve the queue in which this frame was sent */ 894 qid = RT2661_TX_QID(val); 895 txq = (qid <= 3) ? &sc->txq[qid] : &sc->mgtq; 896 897 /* retrieve rate control algorithm context */ 898 data = &txq->data[txq->stat]; 899 m = data->m; 900 data->m = NULL; 901 ni = data->ni; 902 data->ni = NULL; 903 vap = ni->ni_vap; 904 905 /* if no frame has been sent, ignore */ 906 if (ni == NULL) 907 continue; 908 909 switch (RT2661_TX_RESULT(val)) { 910 case RT2661_TX_SUCCESS: 911 retrycnt = RT2661_TX_RETRYCNT(val); 912 913 DPRINTFN(sc, 10, "data frame sent successfully after " 914 "%d retries\n", retrycnt); 915 if (data->rix != IEEE80211_FIXED_RATE_NONE) 916 ieee80211_ratectl_tx_complete(vap, ni, 917 IEEE80211_RATECTL_TX_SUCCESS, 918 &retrycnt, NULL); 919 ifp->if_opackets++; 920 break; 921 922 case RT2661_TX_RETRY_FAIL: 923 retrycnt = RT2661_TX_RETRYCNT(val); 924 925 DPRINTFN(sc, 9, "%s\n", 926 "sending data frame failed (too much retries)"); 927 if (data->rix != IEEE80211_FIXED_RATE_NONE) 928 ieee80211_ratectl_tx_complete(vap, ni, 929 IEEE80211_RATECTL_TX_FAILURE, 930 &retrycnt, NULL); 931 ifp->if_oerrors++; 932 break; 933 934 default: 935 /* other failure */ 936 device_printf(sc->sc_dev, 937 "sending data frame failed 0x%08x\n", val); 938 ifp->if_oerrors++; 939 } 940 941 DPRINTFN(sc, 15, "tx done q=%d idx=%u\n", qid, txq->stat); 942 943 txq->queued--; 944 if (++txq->stat >= txq->count) /* faster than % count */ 945 txq->stat = 0; 946 947 if (m->m_flags & M_TXCB) 948 ieee80211_process_callback(ni, m, 949 RT2661_TX_RESULT(val) != RT2661_TX_SUCCESS); 950 m_freem(m); 951 ieee80211_free_node(ni); 952 } 953 954 sc->sc_tx_timer = 0; 955 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 956 957 rt2661_start_locked(ifp); 958} 959 960static void 961rt2661_tx_dma_intr(struct rt2661_softc *sc, struct rt2661_tx_ring *txq) 962{ 963 struct rt2661_tx_desc *desc; 964 struct rt2661_tx_data *data; 965 966 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_POSTREAD); 967 968 for (;;) { 969 desc = &txq->desc[txq->next]; 970 data = &txq->data[txq->next]; 971 972 if ((le32toh(desc->flags) & RT2661_TX_BUSY) || 973 !(le32toh(desc->flags) & RT2661_TX_VALID)) 974 break; 975 976 bus_dmamap_sync(txq->data_dmat, data->map, 977 BUS_DMASYNC_POSTWRITE); 978 bus_dmamap_unload(txq->data_dmat, data->map); 979 980 /* descriptor is no longer valid */ 981 desc->flags &= ~htole32(RT2661_TX_VALID); 982 983 DPRINTFN(sc, 15, "tx dma done q=%p idx=%u\n", txq, txq->next); 984 985 if (++txq->next >= txq->count) /* faster than % count */ 986 txq->next = 0; 987 } 988 989 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 990} 991 992static void 993rt2661_rx_intr(struct rt2661_softc *sc) 994{ 995 struct ifnet *ifp = sc->sc_ifp; 996 struct ieee80211com *ic = ifp->if_l2com; 997 struct rt2661_rx_desc *desc; 998 struct rt2661_rx_data *data; 999 bus_addr_t physaddr; 1000 struct ieee80211_frame *wh; 1001 struct ieee80211_node *ni; 1002 struct mbuf *mnew, *m; 1003 int error; 1004 1005 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1006 BUS_DMASYNC_POSTREAD); 1007 1008 for (;;) { 1009 int8_t rssi, nf; 1010 1011 desc = &sc->rxq.desc[sc->rxq.cur]; 1012 data = &sc->rxq.data[sc->rxq.cur]; 1013 1014 if (le32toh(desc->flags) & RT2661_RX_BUSY) 1015 break; 1016 1017 if ((le32toh(desc->flags) & RT2661_RX_PHY_ERROR) || 1018 (le32toh(desc->flags) & RT2661_RX_CRC_ERROR)) { 1019 /* 1020 * This should not happen since we did not request 1021 * to receive those frames when we filled TXRX_CSR0. 1022 */ 1023 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1024 le32toh(desc->flags)); 1025 ifp->if_ierrors++; 1026 goto skip; 1027 } 1028 1029 if ((le32toh(desc->flags) & RT2661_RX_CIPHER_MASK) != 0) { 1030 ifp->if_ierrors++; 1031 goto skip; 1032 } 1033 1034 /* 1035 * Try to allocate a new mbuf for this ring element and load it 1036 * before processing the current mbuf. If the ring element 1037 * cannot be loaded, drop the received packet and reuse the old 1038 * mbuf. In the unlikely case that the old mbuf can't be 1039 * reloaded either, explicitly panic. 1040 */ 1041 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1042 if (mnew == NULL) { 1043 ifp->if_ierrors++; 1044 goto skip; 1045 } 1046 1047 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1048 BUS_DMASYNC_POSTREAD); 1049 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1050 1051 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1052 mtod(mnew, void *), MCLBYTES, rt2661_dma_map_addr, 1053 &physaddr, 0); 1054 if (error != 0) { 1055 m_freem(mnew); 1056 1057 /* try to reload the old mbuf */ 1058 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1059 mtod(data->m, void *), MCLBYTES, 1060 rt2661_dma_map_addr, &physaddr, 0); 1061 if (error != 0) { 1062 /* very unlikely that it will fail... */ 1063 panic("%s: could not load old rx mbuf", 1064 device_get_name(sc->sc_dev)); 1065 } 1066 ifp->if_ierrors++; 1067 goto skip; 1068 } 1069 1070 /* 1071 * New mbuf successfully loaded, update Rx ring and continue 1072 * processing. 1073 */ 1074 m = data->m; 1075 data->m = mnew; 1076 desc->physaddr = htole32(physaddr); 1077 1078 /* finalize mbuf */ 1079 m->m_pkthdr.rcvif = ifp; 1080 m->m_pkthdr.len = m->m_len = 1081 (le32toh(desc->flags) >> 16) & 0xfff; 1082 1083 rssi = rt2661_get_rssi(sc, desc->rssi); 1084 /* Error happened during RSSI conversion. */ 1085 if (rssi < 0) 1086 rssi = -30; /* XXX ignored by net80211 */ 1087 nf = RT2661_NOISE_FLOOR; 1088 1089 if (ieee80211_radiotap_active(ic)) { 1090 struct rt2661_rx_radiotap_header *tap = &sc->sc_rxtap; 1091 uint32_t tsf_lo, tsf_hi; 1092 1093 /* get timestamp (low and high 32 bits) */ 1094 tsf_hi = RAL_READ(sc, RT2661_TXRX_CSR13); 1095 tsf_lo = RAL_READ(sc, RT2661_TXRX_CSR12); 1096 1097 tap->wr_tsf = 1098 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1099 tap->wr_flags = 0; 1100 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1101 (desc->flags & htole32(RT2661_RX_OFDM)) ? 1102 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1103 tap->wr_antsignal = nf + rssi; 1104 tap->wr_antnoise = nf; 1105 } 1106 sc->sc_flags |= RAL_INPUT_RUNNING; 1107 RAL_UNLOCK(sc); 1108 wh = mtod(m, struct ieee80211_frame *); 1109 1110 /* send the frame to the 802.11 layer */ 1111 ni = ieee80211_find_rxnode(ic, 1112 (struct ieee80211_frame_min *)wh); 1113 if (ni != NULL) { 1114 (void) ieee80211_input(ni, m, rssi, nf); 1115 ieee80211_free_node(ni); 1116 } else 1117 (void) ieee80211_input_all(ic, m, rssi, nf); 1118 1119 RAL_LOCK(sc); 1120 sc->sc_flags &= ~RAL_INPUT_RUNNING; 1121 1122skip: desc->flags |= htole32(RT2661_RX_BUSY); 1123 1124 DPRINTFN(sc, 15, "rx intr idx=%u\n", sc->rxq.cur); 1125 1126 sc->rxq.cur = (sc->rxq.cur + 1) % RT2661_RX_RING_COUNT; 1127 } 1128 1129 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1130 BUS_DMASYNC_PREWRITE); 1131} 1132 1133/* ARGSUSED */ 1134static void 1135rt2661_mcu_beacon_expire(struct rt2661_softc *sc) 1136{ 1137 /* do nothing */ 1138} 1139 1140static void 1141rt2661_mcu_wakeup(struct rt2661_softc *sc) 1142{ 1143 RAL_WRITE(sc, RT2661_MAC_CSR11, 5 << 16); 1144 1145 RAL_WRITE(sc, RT2661_SOFT_RESET_CSR, 0x7); 1146 RAL_WRITE(sc, RT2661_IO_CNTL_CSR, 0x18); 1147 RAL_WRITE(sc, RT2661_PCI_USEC_CSR, 0x20); 1148 1149 /* send wakeup command to MCU */ 1150 rt2661_tx_cmd(sc, RT2661_MCU_CMD_WAKEUP, 0); 1151} 1152 1153static void 1154rt2661_mcu_cmd_intr(struct rt2661_softc *sc) 1155{ 1156 RAL_READ(sc, RT2661_M2H_CMD_DONE_CSR); 1157 RAL_WRITE(sc, RT2661_M2H_CMD_DONE_CSR, 0xffffffff); 1158} 1159 1160void 1161rt2661_intr(void *arg) 1162{ 1163 struct rt2661_softc *sc = arg; 1164 struct ifnet *ifp = sc->sc_ifp; 1165 uint32_t r1, r2; 1166 1167 RAL_LOCK(sc); 1168 1169 /* disable MAC and MCU interrupts */ 1170 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0xffffff7f); 1171 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0xffffffff); 1172 1173 /* don't re-enable interrupts if we're shutting down */ 1174 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1175 RAL_UNLOCK(sc); 1176 return; 1177 } 1178 1179 r1 = RAL_READ(sc, RT2661_INT_SOURCE_CSR); 1180 RAL_WRITE(sc, RT2661_INT_SOURCE_CSR, r1); 1181 1182 r2 = RAL_READ(sc, RT2661_MCU_INT_SOURCE_CSR); 1183 RAL_WRITE(sc, RT2661_MCU_INT_SOURCE_CSR, r2); 1184 1185 if (r1 & RT2661_MGT_DONE) 1186 rt2661_tx_dma_intr(sc, &sc->mgtq); 1187 1188 if (r1 & RT2661_RX_DONE) 1189 rt2661_rx_intr(sc); 1190 1191 if (r1 & RT2661_TX0_DMA_DONE) 1192 rt2661_tx_dma_intr(sc, &sc->txq[0]); 1193 1194 if (r1 & RT2661_TX1_DMA_DONE) 1195 rt2661_tx_dma_intr(sc, &sc->txq[1]); 1196 1197 if (r1 & RT2661_TX2_DMA_DONE) 1198 rt2661_tx_dma_intr(sc, &sc->txq[2]); 1199 1200 if (r1 & RT2661_TX3_DMA_DONE) 1201 rt2661_tx_dma_intr(sc, &sc->txq[3]); 1202 1203 if (r1 & RT2661_TX_DONE) 1204 rt2661_tx_intr(sc); 1205 1206 if (r2 & RT2661_MCU_CMD_DONE) 1207 rt2661_mcu_cmd_intr(sc); 1208 1209 if (r2 & RT2661_MCU_BEACON_EXPIRE) 1210 rt2661_mcu_beacon_expire(sc); 1211 1212 if (r2 & RT2661_MCU_WAKEUP) 1213 rt2661_mcu_wakeup(sc); 1214 1215 /* re-enable MAC and MCU interrupts */ 1216 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0x0000ff10); 1217 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0); 1218 1219 RAL_UNLOCK(sc); 1220} 1221 1222static uint8_t 1223rt2661_plcp_signal(int rate) 1224{ 1225 switch (rate) { 1226 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1227 case 12: return 0xb; 1228 case 18: return 0xf; 1229 case 24: return 0xa; 1230 case 36: return 0xe; 1231 case 48: return 0x9; 1232 case 72: return 0xd; 1233 case 96: return 0x8; 1234 case 108: return 0xc; 1235 1236 /* CCK rates (NB: not IEEE std, device-specific) */ 1237 case 2: return 0x0; 1238 case 4: return 0x1; 1239 case 11: return 0x2; 1240 case 22: return 0x3; 1241 } 1242 return 0xff; /* XXX unsupported/unknown rate */ 1243} 1244 1245static void 1246rt2661_setup_tx_desc(struct rt2661_softc *sc, struct rt2661_tx_desc *desc, 1247 uint32_t flags, uint16_t xflags, int len, int rate, 1248 const bus_dma_segment_t *segs, int nsegs, int ac) 1249{ 1250 struct ifnet *ifp = sc->sc_ifp; 1251 struct ieee80211com *ic = ifp->if_l2com; 1252 uint16_t plcp_length; 1253 int i, remainder; 1254 1255 desc->flags = htole32(flags); 1256 desc->flags |= htole32(len << 16); 1257 desc->flags |= htole32(RT2661_TX_BUSY | RT2661_TX_VALID); 1258 1259 desc->xflags = htole16(xflags); 1260 desc->xflags |= htole16(nsegs << 13); 1261 1262 desc->wme = htole16( 1263 RT2661_QID(ac) | 1264 RT2661_AIFSN(2) | 1265 RT2661_LOGCWMIN(4) | 1266 RT2661_LOGCWMAX(10)); 1267 1268 /* 1269 * Remember in which queue this frame was sent. This field is driver 1270 * private data only. It will be made available by the NIC in STA_CSR4 1271 * on Tx interrupts. 1272 */ 1273 desc->qid = ac; 1274 1275 /* setup PLCP fields */ 1276 desc->plcp_signal = rt2661_plcp_signal(rate); 1277 desc->plcp_service = 4; 1278 1279 len += IEEE80211_CRC_LEN; 1280 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1281 desc->flags |= htole32(RT2661_TX_OFDM); 1282 1283 plcp_length = len & 0xfff; 1284 desc->plcp_length_hi = plcp_length >> 6; 1285 desc->plcp_length_lo = plcp_length & 0x3f; 1286 } else { 1287 plcp_length = (16 * len + rate - 1) / rate; 1288 if (rate == 22) { 1289 remainder = (16 * len) % 22; 1290 if (remainder != 0 && remainder < 7) 1291 desc->plcp_service |= RT2661_PLCP_LENGEXT; 1292 } 1293 desc->plcp_length_hi = plcp_length >> 8; 1294 desc->plcp_length_lo = plcp_length & 0xff; 1295 1296 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1297 desc->plcp_signal |= 0x08; 1298 } 1299 1300 /* RT2x61 supports scatter with up to 5 segments */ 1301 for (i = 0; i < nsegs; i++) { 1302 desc->addr[i] = htole32(segs[i].ds_addr); 1303 desc->len [i] = htole16(segs[i].ds_len); 1304 } 1305} 1306 1307static int 1308rt2661_tx_mgt(struct rt2661_softc *sc, struct mbuf *m0, 1309 struct ieee80211_node *ni) 1310{ 1311 struct ieee80211vap *vap = ni->ni_vap; 1312 struct ieee80211com *ic = ni->ni_ic; 1313 struct rt2661_tx_desc *desc; 1314 struct rt2661_tx_data *data; 1315 struct ieee80211_frame *wh; 1316 struct ieee80211_key *k; 1317 bus_dma_segment_t segs[RT2661_MAX_SCATTER]; 1318 uint16_t dur; 1319 uint32_t flags = 0; /* XXX HWSEQ */ 1320 int nsegs, rate, error; 1321 1322 desc = &sc->mgtq.desc[sc->mgtq.cur]; 1323 data = &sc->mgtq.data[sc->mgtq.cur]; 1324 1325 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1326 1327 wh = mtod(m0, struct ieee80211_frame *); 1328 1329 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1330 k = ieee80211_crypto_encap(ni, m0); 1331 if (k == NULL) { 1332 m_freem(m0); 1333 return ENOBUFS; 1334 } 1335 } 1336 1337 error = bus_dmamap_load_mbuf_sg(sc->mgtq.data_dmat, data->map, m0, 1338 segs, &nsegs, 0); 1339 if (error != 0) { 1340 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1341 error); 1342 m_freem(m0); 1343 return error; 1344 } 1345 1346 if (ieee80211_radiotap_active_vap(vap)) { 1347 struct rt2661_tx_radiotap_header *tap = &sc->sc_txtap; 1348 1349 tap->wt_flags = 0; 1350 tap->wt_rate = rate; 1351 1352 ieee80211_radiotap_tx(vap, m0); 1353 } 1354 1355 data->m = m0; 1356 data->ni = ni; 1357 /* management frames are not taken into account for amrr */ 1358 data->rix = IEEE80211_FIXED_RATE_NONE; 1359 1360 wh = mtod(m0, struct ieee80211_frame *); 1361 1362 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1363 flags |= RT2661_TX_NEED_ACK; 1364 1365 dur = ieee80211_ack_duration(ic->ic_rt, 1366 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1367 *(uint16_t *)wh->i_dur = htole16(dur); 1368 1369 /* tell hardware to add timestamp in probe responses */ 1370 if ((wh->i_fc[0] & 1371 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1372 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1373 flags |= RT2661_TX_TIMESTAMP; 1374 } 1375 1376 rt2661_setup_tx_desc(sc, desc, flags, 0 /* XXX HWSEQ */, 1377 m0->m_pkthdr.len, rate, segs, nsegs, RT2661_QID_MGT); 1378 1379 bus_dmamap_sync(sc->mgtq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1380 bus_dmamap_sync(sc->mgtq.desc_dmat, sc->mgtq.desc_map, 1381 BUS_DMASYNC_PREWRITE); 1382 1383 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1384 m0->m_pkthdr.len, sc->mgtq.cur, rate); 1385 1386 /* kick mgt */ 1387 sc->mgtq.queued++; 1388 sc->mgtq.cur = (sc->mgtq.cur + 1) % RT2661_MGT_RING_COUNT; 1389 RAL_WRITE(sc, RT2661_TX_CNTL_CSR, RT2661_KICK_MGT); 1390 1391 return 0; 1392} 1393 1394static int 1395rt2661_sendprot(struct rt2661_softc *sc, int ac, 1396 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1397{ 1398 struct ieee80211com *ic = ni->ni_ic; 1399 struct rt2661_tx_ring *txq = &sc->txq[ac]; 1400 const struct ieee80211_frame *wh; 1401 struct rt2661_tx_desc *desc; 1402 struct rt2661_tx_data *data; 1403 struct mbuf *mprot; 1404 int protrate, ackrate, pktlen, flags, isshort, error; 1405 uint16_t dur; 1406 bus_dma_segment_t segs[RT2661_MAX_SCATTER]; 1407 int nsegs; 1408 1409 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1410 ("protection %d", prot)); 1411 1412 wh = mtod(m, const struct ieee80211_frame *); 1413 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1414 1415 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1416 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1417 1418 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1419 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1420 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1421 flags = RT2661_TX_MORE_FRAG; 1422 if (prot == IEEE80211_PROT_RTSCTS) { 1423 /* NB: CTS is the same size as an ACK */ 1424 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1425 flags |= RT2661_TX_NEED_ACK; 1426 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1427 } else { 1428 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1429 } 1430 if (mprot == NULL) { 1431 /* XXX stat + msg */ 1432 return ENOBUFS; 1433 } 1434 1435 data = &txq->data[txq->cur]; 1436 desc = &txq->desc[txq->cur]; 1437 1438 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, mprot, segs, 1439 &nsegs, 0); 1440 if (error != 0) { 1441 device_printf(sc->sc_dev, 1442 "could not map mbuf (error %d)\n", error); 1443 m_freem(mprot); 1444 return error; 1445 } 1446 1447 data->m = mprot; 1448 data->ni = ieee80211_ref_node(ni); 1449 /* ctl frames are not taken into account for amrr */ 1450 data->rix = IEEE80211_FIXED_RATE_NONE; 1451 1452 rt2661_setup_tx_desc(sc, desc, flags, 0, mprot->m_pkthdr.len, 1453 protrate, segs, 1, ac); 1454 1455 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1456 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 1457 1458 txq->queued++; 1459 txq->cur = (txq->cur + 1) % RT2661_TX_RING_COUNT; 1460 1461 return 0; 1462} 1463 1464static int 1465rt2661_tx_data(struct rt2661_softc *sc, struct mbuf *m0, 1466 struct ieee80211_node *ni, int ac) 1467{ 1468 struct ieee80211vap *vap = ni->ni_vap; 1469 struct ifnet *ifp = sc->sc_ifp; 1470 struct ieee80211com *ic = ifp->if_l2com; 1471 struct rt2661_tx_ring *txq = &sc->txq[ac]; 1472 struct rt2661_tx_desc *desc; 1473 struct rt2661_tx_data *data; 1474 struct ieee80211_frame *wh; 1475 const struct ieee80211_txparam *tp; 1476 struct ieee80211_key *k; 1477 const struct chanAccParams *cap; 1478 struct mbuf *mnew; 1479 bus_dma_segment_t segs[RT2661_MAX_SCATTER]; 1480 uint16_t dur; 1481 uint32_t flags; 1482 int error, nsegs, rate, noack = 0; 1483 1484 wh = mtod(m0, struct ieee80211_frame *); 1485 1486 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1487 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1488 rate = tp->mcastrate; 1489 } else if (m0->m_flags & M_EAPOL) { 1490 rate = tp->mgmtrate; 1491 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1492 rate = tp->ucastrate; 1493 } else { 1494 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1495 rate = ni->ni_txrate; 1496 } 1497 rate &= IEEE80211_RATE_VAL; 1498 1499 if (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) { 1500 cap = &ic->ic_wme.wme_chanParams; 1501 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1502 } 1503 1504 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1505 k = ieee80211_crypto_encap(ni, m0); 1506 if (k == NULL) { 1507 m_freem(m0); 1508 return ENOBUFS; 1509 } 1510 1511 /* packet header may have moved, reset our local pointer */ 1512 wh = mtod(m0, struct ieee80211_frame *); 1513 } 1514 1515 flags = 0; 1516 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1517 int prot = IEEE80211_PROT_NONE; 1518 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1519 prot = IEEE80211_PROT_RTSCTS; 1520 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1521 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1522 prot = ic->ic_protmode; 1523 if (prot != IEEE80211_PROT_NONE) { 1524 error = rt2661_sendprot(sc, ac, m0, ni, prot, rate); 1525 if (error) { 1526 m_freem(m0); 1527 return error; 1528 } 1529 flags |= RT2661_TX_LONG_RETRY | RT2661_TX_IFS; 1530 } 1531 } 1532 1533 data = &txq->data[txq->cur]; 1534 desc = &txq->desc[txq->cur]; 1535 1536 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs, 1537 &nsegs, 0); 1538 if (error != 0 && error != EFBIG) { 1539 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1540 error); 1541 m_freem(m0); 1542 return error; 1543 } 1544 if (error != 0) { 1545 mnew = m_defrag(m0, M_DONTWAIT); 1546 if (mnew == NULL) { 1547 device_printf(sc->sc_dev, 1548 "could not defragment mbuf\n"); 1549 m_freem(m0); 1550 return ENOBUFS; 1551 } 1552 m0 = mnew; 1553 1554 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, 1555 segs, &nsegs, 0); 1556 if (error != 0) { 1557 device_printf(sc->sc_dev, 1558 "could not map mbuf (error %d)\n", error); 1559 m_freem(m0); 1560 return error; 1561 } 1562 1563 /* packet header have moved, reset our local pointer */ 1564 wh = mtod(m0, struct ieee80211_frame *); 1565 } 1566 1567 if (ieee80211_radiotap_active_vap(vap)) { 1568 struct rt2661_tx_radiotap_header *tap = &sc->sc_txtap; 1569 1570 tap->wt_flags = 0; 1571 tap->wt_rate = rate; 1572 1573 ieee80211_radiotap_tx(vap, m0); 1574 } 1575 1576 data->m = m0; 1577 data->ni = ni; 1578 1579 /* remember link conditions for rate adaptation algorithm */ 1580 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1581 data->rix = ni->ni_txrate; 1582 /* XXX probably need last rssi value and not avg */ 1583 data->rssi = ic->ic_node_getrssi(ni); 1584 } else 1585 data->rix = IEEE80211_FIXED_RATE_NONE; 1586 1587 if (!noack && !IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1588 flags |= RT2661_TX_NEED_ACK; 1589 1590 dur = ieee80211_ack_duration(ic->ic_rt, 1591 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1592 *(uint16_t *)wh->i_dur = htole16(dur); 1593 } 1594 1595 rt2661_setup_tx_desc(sc, desc, flags, 0, m0->m_pkthdr.len, rate, segs, 1596 nsegs, ac); 1597 1598 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1599 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 1600 1601 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1602 m0->m_pkthdr.len, txq->cur, rate); 1603 1604 /* kick Tx */ 1605 txq->queued++; 1606 txq->cur = (txq->cur + 1) % RT2661_TX_RING_COUNT; 1607 RAL_WRITE(sc, RT2661_TX_CNTL_CSR, 1 << ac); 1608 1609 return 0; 1610} 1611 1612static void 1613rt2661_start_locked(struct ifnet *ifp) 1614{ 1615 struct rt2661_softc *sc = ifp->if_softc; 1616 struct mbuf *m; 1617 struct ieee80211_node *ni; 1618 int ac; 1619 1620 RAL_LOCK_ASSERT(sc); 1621 1622 /* prevent management frames from being sent if we're not ready */ 1623 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING) || sc->sc_invalid) 1624 return; 1625 1626 for (;;) { 1627 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1628 if (m == NULL) 1629 break; 1630 1631 ac = M_WME_GETAC(m); 1632 if (sc->txq[ac].queued >= RT2661_TX_RING_COUNT - 1) { 1633 /* there is no place left in this ring */ 1634 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1635 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1636 break; 1637 } 1638 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1639 if (rt2661_tx_data(sc, m, ni, ac) != 0) { 1640 ieee80211_free_node(ni); 1641 ifp->if_oerrors++; 1642 break; 1643 } 1644 1645 sc->sc_tx_timer = 5; 1646 } 1647} 1648 1649static void 1650rt2661_start(struct ifnet *ifp) 1651{ 1652 struct rt2661_softc *sc = ifp->if_softc; 1653 1654 RAL_LOCK(sc); 1655 rt2661_start_locked(ifp); 1656 RAL_UNLOCK(sc); 1657} 1658 1659static int 1660rt2661_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1661 const struct ieee80211_bpf_params *params) 1662{ 1663 struct ieee80211com *ic = ni->ni_ic; 1664 struct ifnet *ifp = ic->ic_ifp; 1665 struct rt2661_softc *sc = ifp->if_softc; 1666 1667 RAL_LOCK(sc); 1668 1669 /* prevent management frames from being sent if we're not ready */ 1670 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1671 RAL_UNLOCK(sc); 1672 m_freem(m); 1673 ieee80211_free_node(ni); 1674 return ENETDOWN; 1675 } 1676 if (sc->mgtq.queued >= RT2661_MGT_RING_COUNT) { 1677 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1678 RAL_UNLOCK(sc); 1679 m_freem(m); 1680 ieee80211_free_node(ni); 1681 return ENOBUFS; /* XXX */ 1682 } 1683 1684 ifp->if_opackets++; 1685 1686 /* 1687 * Legacy path; interpret frame contents to decide 1688 * precisely how to send the frame. 1689 * XXX raw path 1690 */ 1691 if (rt2661_tx_mgt(sc, m, ni) != 0) 1692 goto bad; 1693 sc->sc_tx_timer = 5; 1694 1695 RAL_UNLOCK(sc); 1696 1697 return 0; 1698bad: 1699 ifp->if_oerrors++; 1700 ieee80211_free_node(ni); 1701 RAL_UNLOCK(sc); 1702 return EIO; /* XXX */ 1703} 1704 1705static void 1706rt2661_watchdog(void *arg) 1707{ 1708 struct rt2661_softc *sc = (struct rt2661_softc *)arg; 1709 struct ifnet *ifp = sc->sc_ifp; 1710 1711 RAL_LOCK_ASSERT(sc); 1712 1713 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1714 1715 if (sc->sc_invalid) /* card ejected */ 1716 return; 1717 1718 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1719 if_printf(ifp, "device timeout\n"); 1720 rt2661_init_locked(sc); 1721 ifp->if_oerrors++; 1722 /* NB: callout is reset in rt2661_init() */ 1723 return; 1724 } 1725 callout_reset(&sc->watchdog_ch, hz, rt2661_watchdog, sc); 1726} 1727 1728static int 1729rt2661_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1730{ 1731 struct rt2661_softc *sc = ifp->if_softc; 1732 struct ieee80211com *ic = ifp->if_l2com; 1733 struct ifreq *ifr = (struct ifreq *) data; 1734 int error = 0, startall = 0; 1735 1736 switch (cmd) { 1737 case SIOCSIFFLAGS: 1738 RAL_LOCK(sc); 1739 if (ifp->if_flags & IFF_UP) { 1740 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1741 rt2661_init_locked(sc); 1742 startall = 1; 1743 } else 1744 rt2661_update_promisc(ifp); 1745 } else { 1746 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 1747 rt2661_stop_locked(sc); 1748 } 1749 RAL_UNLOCK(sc); 1750 if (startall) 1751 ieee80211_start_all(ic); 1752 break; 1753 case SIOCGIFMEDIA: 1754 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 1755 break; 1756 case SIOCGIFADDR: 1757 error = ether_ioctl(ifp, cmd, data); 1758 break; 1759 default: 1760 error = EINVAL; 1761 break; 1762 } 1763 return error; 1764} 1765 1766static void 1767rt2661_bbp_write(struct rt2661_softc *sc, uint8_t reg, uint8_t val) 1768{ 1769 uint32_t tmp; 1770 int ntries; 1771 1772 for (ntries = 0; ntries < 100; ntries++) { 1773 if (!(RAL_READ(sc, RT2661_PHY_CSR3) & RT2661_BBP_BUSY)) 1774 break; 1775 DELAY(1); 1776 } 1777 if (ntries == 100) { 1778 device_printf(sc->sc_dev, "could not write to BBP\n"); 1779 return; 1780 } 1781 1782 tmp = RT2661_BBP_BUSY | (reg & 0x7f) << 8 | val; 1783 RAL_WRITE(sc, RT2661_PHY_CSR3, tmp); 1784 1785 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 1786} 1787 1788static uint8_t 1789rt2661_bbp_read(struct rt2661_softc *sc, uint8_t reg) 1790{ 1791 uint32_t val; 1792 int ntries; 1793 1794 for (ntries = 0; ntries < 100; ntries++) { 1795 if (!(RAL_READ(sc, RT2661_PHY_CSR3) & RT2661_BBP_BUSY)) 1796 break; 1797 DELAY(1); 1798 } 1799 if (ntries == 100) { 1800 device_printf(sc->sc_dev, "could not read from BBP\n"); 1801 return 0; 1802 } 1803 1804 val = RT2661_BBP_BUSY | RT2661_BBP_READ | reg << 8; 1805 RAL_WRITE(sc, RT2661_PHY_CSR3, val); 1806 1807 for (ntries = 0; ntries < 100; ntries++) { 1808 val = RAL_READ(sc, RT2661_PHY_CSR3); 1809 if (!(val & RT2661_BBP_BUSY)) 1810 return val & 0xff; 1811 DELAY(1); 1812 } 1813 1814 device_printf(sc->sc_dev, "could not read from BBP\n"); 1815 return 0; 1816} 1817 1818static void 1819rt2661_rf_write(struct rt2661_softc *sc, uint8_t reg, uint32_t val) 1820{ 1821 uint32_t tmp; 1822 int ntries; 1823 1824 for (ntries = 0; ntries < 100; ntries++) { 1825 if (!(RAL_READ(sc, RT2661_PHY_CSR4) & RT2661_RF_BUSY)) 1826 break; 1827 DELAY(1); 1828 } 1829 if (ntries == 100) { 1830 device_printf(sc->sc_dev, "could not write to RF\n"); 1831 return; 1832 } 1833 1834 tmp = RT2661_RF_BUSY | RT2661_RF_21BIT | (val & 0x1fffff) << 2 | 1835 (reg & 3); 1836 RAL_WRITE(sc, RT2661_PHY_CSR4, tmp); 1837 1838 /* remember last written value in sc */ 1839 sc->rf_regs[reg] = val; 1840 1841 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 3, val & 0x1fffff); 1842} 1843 1844static int 1845rt2661_tx_cmd(struct rt2661_softc *sc, uint8_t cmd, uint16_t arg) 1846{ 1847 if (RAL_READ(sc, RT2661_H2M_MAILBOX_CSR) & RT2661_H2M_BUSY) 1848 return EIO; /* there is already a command pending */ 1849 1850 RAL_WRITE(sc, RT2661_H2M_MAILBOX_CSR, 1851 RT2661_H2M_BUSY | RT2661_TOKEN_NO_INTR << 16 | arg); 1852 1853 RAL_WRITE(sc, RT2661_HOST_CMD_CSR, RT2661_KICK_CMD | cmd); 1854 1855 return 0; 1856} 1857 1858static void 1859rt2661_select_antenna(struct rt2661_softc *sc) 1860{ 1861 uint8_t bbp4, bbp77; 1862 uint32_t tmp; 1863 1864 bbp4 = rt2661_bbp_read(sc, 4); 1865 bbp77 = rt2661_bbp_read(sc, 77); 1866 1867 /* TBD */ 1868 1869 /* make sure Rx is disabled before switching antenna */ 1870 tmp = RAL_READ(sc, RT2661_TXRX_CSR0); 1871 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp | RT2661_DISABLE_RX); 1872 1873 rt2661_bbp_write(sc, 4, bbp4); 1874 rt2661_bbp_write(sc, 77, bbp77); 1875 1876 /* restore Rx filter */ 1877 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp); 1878} 1879 1880/* 1881 * Enable multi-rate retries for frames sent at OFDM rates. 1882 * In 802.11b/g mode, allow fallback to CCK rates. 1883 */ 1884static void 1885rt2661_enable_mrr(struct rt2661_softc *sc) 1886{ 1887 struct ifnet *ifp = sc->sc_ifp; 1888 struct ieee80211com *ic = ifp->if_l2com; 1889 uint32_t tmp; 1890 1891 tmp = RAL_READ(sc, RT2661_TXRX_CSR4); 1892 1893 tmp &= ~RT2661_MRR_CCK_FALLBACK; 1894 if (!IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan)) 1895 tmp |= RT2661_MRR_CCK_FALLBACK; 1896 tmp |= RT2661_MRR_ENABLED; 1897 1898 RAL_WRITE(sc, RT2661_TXRX_CSR4, tmp); 1899} 1900 1901static void 1902rt2661_set_txpreamble(struct rt2661_softc *sc) 1903{ 1904 struct ifnet *ifp = sc->sc_ifp; 1905 struct ieee80211com *ic = ifp->if_l2com; 1906 uint32_t tmp; 1907 1908 tmp = RAL_READ(sc, RT2661_TXRX_CSR4); 1909 1910 tmp &= ~RT2661_SHORT_PREAMBLE; 1911 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1912 tmp |= RT2661_SHORT_PREAMBLE; 1913 1914 RAL_WRITE(sc, RT2661_TXRX_CSR4, tmp); 1915} 1916 1917static void 1918rt2661_set_basicrates(struct rt2661_softc *sc, 1919 const struct ieee80211_rateset *rs) 1920{ 1921#define RV(r) ((r) & IEEE80211_RATE_VAL) 1922 struct ifnet *ifp = sc->sc_ifp; 1923 struct ieee80211com *ic = ifp->if_l2com; 1924 uint32_t mask = 0; 1925 uint8_t rate; 1926 int i, j; 1927 1928 for (i = 0; i < rs->rs_nrates; i++) { 1929 rate = rs->rs_rates[i]; 1930 1931 if (!(rate & IEEE80211_RATE_BASIC)) 1932 continue; 1933 1934 /* 1935 * Find h/w rate index. We know it exists because the rate 1936 * set has already been negotiated. 1937 */ 1938 for (j = 0; ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates[j] != RV(rate); j++); 1939 1940 mask |= 1 << j; 1941 } 1942 1943 RAL_WRITE(sc, RT2661_TXRX_CSR5, mask); 1944 1945 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 1946#undef RV 1947} 1948 1949/* 1950 * Reprogram MAC/BBP to switch to a new band. Values taken from the reference 1951 * driver. 1952 */ 1953static void 1954rt2661_select_band(struct rt2661_softc *sc, struct ieee80211_channel *c) 1955{ 1956 uint8_t bbp17, bbp35, bbp96, bbp97, bbp98, bbp104; 1957 uint32_t tmp; 1958 1959 /* update all BBP registers that depend on the band */ 1960 bbp17 = 0x20; bbp96 = 0x48; bbp104 = 0x2c; 1961 bbp35 = 0x50; bbp97 = 0x48; bbp98 = 0x48; 1962 if (IEEE80211_IS_CHAN_5GHZ(c)) { 1963 bbp17 += 0x08; bbp96 += 0x10; bbp104 += 0x0c; 1964 bbp35 += 0x10; bbp97 += 0x10; bbp98 += 0x10; 1965 } 1966 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1967 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1968 bbp17 += 0x10; bbp96 += 0x10; bbp104 += 0x10; 1969 } 1970 1971 rt2661_bbp_write(sc, 17, bbp17); 1972 rt2661_bbp_write(sc, 96, bbp96); 1973 rt2661_bbp_write(sc, 104, bbp104); 1974 1975 if ((IEEE80211_IS_CHAN_2GHZ(c) && sc->ext_2ghz_lna) || 1976 (IEEE80211_IS_CHAN_5GHZ(c) && sc->ext_5ghz_lna)) { 1977 rt2661_bbp_write(sc, 75, 0x80); 1978 rt2661_bbp_write(sc, 86, 0x80); 1979 rt2661_bbp_write(sc, 88, 0x80); 1980 } 1981 1982 rt2661_bbp_write(sc, 35, bbp35); 1983 rt2661_bbp_write(sc, 97, bbp97); 1984 rt2661_bbp_write(sc, 98, bbp98); 1985 1986 tmp = RAL_READ(sc, RT2661_PHY_CSR0); 1987 tmp &= ~(RT2661_PA_PE_2GHZ | RT2661_PA_PE_5GHZ); 1988 if (IEEE80211_IS_CHAN_2GHZ(c)) 1989 tmp |= RT2661_PA_PE_2GHZ; 1990 else 1991 tmp |= RT2661_PA_PE_5GHZ; 1992 RAL_WRITE(sc, RT2661_PHY_CSR0, tmp); 1993} 1994 1995static void 1996rt2661_set_chan(struct rt2661_softc *sc, struct ieee80211_channel *c) 1997{ 1998 struct ifnet *ifp = sc->sc_ifp; 1999 struct ieee80211com *ic = ifp->if_l2com; 2000 const struct rfprog *rfprog; 2001 uint8_t bbp3, bbp94 = RT2661_BBPR94_DEFAULT; 2002 int8_t power; 2003 u_int i, chan; 2004 2005 chan = ieee80211_chan2ieee(ic, c); 2006 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2007 2008 /* select the appropriate RF settings based on what EEPROM says */ 2009 rfprog = (sc->rfprog == 0) ? rt2661_rf5225_1 : rt2661_rf5225_2; 2010 2011 /* find the settings for this channel (we know it exists) */ 2012 for (i = 0; rfprog[i].chan != chan; i++); 2013 2014 power = sc->txpow[i]; 2015 if (power < 0) { 2016 bbp94 += power; 2017 power = 0; 2018 } else if (power > 31) { 2019 bbp94 += power - 31; 2020 power = 31; 2021 } 2022 2023 /* 2024 * If we are switching from the 2GHz band to the 5GHz band or 2025 * vice-versa, BBP registers need to be reprogrammed. 2026 */ 2027 if (c->ic_flags != sc->sc_curchan->ic_flags) { 2028 rt2661_select_band(sc, c); 2029 rt2661_select_antenna(sc); 2030 } 2031 sc->sc_curchan = c; 2032 2033 rt2661_rf_write(sc, RAL_RF1, rfprog[i].r1); 2034 rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2); 2035 rt2661_rf_write(sc, RAL_RF3, rfprog[i].r3 | power << 7); 2036 rt2661_rf_write(sc, RAL_RF4, rfprog[i].r4 | sc->rffreq << 10); 2037 2038 DELAY(200); 2039 2040 rt2661_rf_write(sc, RAL_RF1, rfprog[i].r1); 2041 rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2); 2042 rt2661_rf_write(sc, RAL_RF3, rfprog[i].r3 | power << 7 | 1); 2043 rt2661_rf_write(sc, RAL_RF4, rfprog[i].r4 | sc->rffreq << 10); 2044 2045 DELAY(200); 2046 2047 rt2661_rf_write(sc, RAL_RF1, rfprog[i].r1); 2048 rt2661_rf_write(sc, RAL_RF2, rfprog[i].r2); 2049 rt2661_rf_write(sc, RAL_RF3, rfprog[i].r3 | power << 7); 2050 rt2661_rf_write(sc, RAL_RF4, rfprog[i].r4 | sc->rffreq << 10); 2051 2052 /* enable smart mode for MIMO-capable RFs */ 2053 bbp3 = rt2661_bbp_read(sc, 3); 2054 2055 bbp3 &= ~RT2661_SMART_MODE; 2056 if (sc->rf_rev == RT2661_RF_5325 || sc->rf_rev == RT2661_RF_2529) 2057 bbp3 |= RT2661_SMART_MODE; 2058 2059 rt2661_bbp_write(sc, 3, bbp3); 2060 2061 if (bbp94 != RT2661_BBPR94_DEFAULT) 2062 rt2661_bbp_write(sc, 94, bbp94); 2063 2064 /* 5GHz radio needs a 1ms delay here */ 2065 if (IEEE80211_IS_CHAN_5GHZ(c)) 2066 DELAY(1000); 2067} 2068 2069static void 2070rt2661_set_bssid(struct rt2661_softc *sc, const uint8_t *bssid) 2071{ 2072 uint32_t tmp; 2073 2074 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2075 RAL_WRITE(sc, RT2661_MAC_CSR4, tmp); 2076 2077 tmp = bssid[4] | bssid[5] << 8 | RT2661_ONE_BSSID << 16; 2078 RAL_WRITE(sc, RT2661_MAC_CSR5, tmp); 2079} 2080 2081static void 2082rt2661_set_macaddr(struct rt2661_softc *sc, const uint8_t *addr) 2083{ 2084 uint32_t tmp; 2085 2086 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2087 RAL_WRITE(sc, RT2661_MAC_CSR2, tmp); 2088 2089 tmp = addr[4] | addr[5] << 8; 2090 RAL_WRITE(sc, RT2661_MAC_CSR3, tmp); 2091} 2092 2093static void 2094rt2661_update_promisc(struct ifnet *ifp) 2095{ 2096 struct rt2661_softc *sc = ifp->if_softc; 2097 uint32_t tmp; 2098 2099 tmp = RAL_READ(sc, RT2661_TXRX_CSR0); 2100 2101 tmp &= ~RT2661_DROP_NOT_TO_ME; 2102 if (!(ifp->if_flags & IFF_PROMISC)) 2103 tmp |= RT2661_DROP_NOT_TO_ME; 2104 2105 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp); 2106 2107 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2108 "entering" : "leaving"); 2109} 2110 2111/* 2112 * Update QoS (802.11e) settings for each h/w Tx ring. 2113 */ 2114static int 2115rt2661_wme_update(struct ieee80211com *ic) 2116{ 2117 struct rt2661_softc *sc = ic->ic_ifp->if_softc; 2118 const struct wmeParams *wmep; 2119 2120 wmep = ic->ic_wme.wme_chanParams.cap_wmeParams; 2121 2122 /* XXX: not sure about shifts. */ 2123 /* XXX: the reference driver plays with AC_VI settings too. */ 2124 2125 /* update TxOp */ 2126 RAL_WRITE(sc, RT2661_AC_TXOP_CSR0, 2127 wmep[WME_AC_BE].wmep_txopLimit << 16 | 2128 wmep[WME_AC_BK].wmep_txopLimit); 2129 RAL_WRITE(sc, RT2661_AC_TXOP_CSR1, 2130 wmep[WME_AC_VI].wmep_txopLimit << 16 | 2131 wmep[WME_AC_VO].wmep_txopLimit); 2132 2133 /* update CWmin */ 2134 RAL_WRITE(sc, RT2661_CWMIN_CSR, 2135 wmep[WME_AC_BE].wmep_logcwmin << 12 | 2136 wmep[WME_AC_BK].wmep_logcwmin << 8 | 2137 wmep[WME_AC_VI].wmep_logcwmin << 4 | 2138 wmep[WME_AC_VO].wmep_logcwmin); 2139 2140 /* update CWmax */ 2141 RAL_WRITE(sc, RT2661_CWMAX_CSR, 2142 wmep[WME_AC_BE].wmep_logcwmax << 12 | 2143 wmep[WME_AC_BK].wmep_logcwmax << 8 | 2144 wmep[WME_AC_VI].wmep_logcwmax << 4 | 2145 wmep[WME_AC_VO].wmep_logcwmax); 2146 2147 /* update Aifsn */ 2148 RAL_WRITE(sc, RT2661_AIFSN_CSR, 2149 wmep[WME_AC_BE].wmep_aifsn << 12 | 2150 wmep[WME_AC_BK].wmep_aifsn << 8 | 2151 wmep[WME_AC_VI].wmep_aifsn << 4 | 2152 wmep[WME_AC_VO].wmep_aifsn); 2153 2154 return 0; 2155} 2156 2157static void 2158rt2661_update_slot(struct ifnet *ifp) 2159{ 2160 struct rt2661_softc *sc = ifp->if_softc; 2161 struct ieee80211com *ic = ifp->if_l2com; 2162 uint8_t slottime; 2163 uint32_t tmp; 2164 2165 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2166 2167 tmp = RAL_READ(sc, RT2661_MAC_CSR9); 2168 tmp = (tmp & ~0xff) | slottime; 2169 RAL_WRITE(sc, RT2661_MAC_CSR9, tmp); 2170} 2171 2172static const char * 2173rt2661_get_rf(int rev) 2174{ 2175 switch (rev) { 2176 case RT2661_RF_5225: return "RT5225"; 2177 case RT2661_RF_5325: return "RT5325 (MIMO XR)"; 2178 case RT2661_RF_2527: return "RT2527"; 2179 case RT2661_RF_2529: return "RT2529 (MIMO XR)"; 2180 default: return "unknown"; 2181 } 2182} 2183 2184static void 2185rt2661_read_eeprom(struct rt2661_softc *sc, uint8_t macaddr[IEEE80211_ADDR_LEN]) 2186{ 2187 uint16_t val; 2188 int i; 2189 2190 /* read MAC address */ 2191 val = rt2661_eeprom_read(sc, RT2661_EEPROM_MAC01); 2192 macaddr[0] = val & 0xff; 2193 macaddr[1] = val >> 8; 2194 2195 val = rt2661_eeprom_read(sc, RT2661_EEPROM_MAC23); 2196 macaddr[2] = val & 0xff; 2197 macaddr[3] = val >> 8; 2198 2199 val = rt2661_eeprom_read(sc, RT2661_EEPROM_MAC45); 2200 macaddr[4] = val & 0xff; 2201 macaddr[5] = val >> 8; 2202 2203 val = rt2661_eeprom_read(sc, RT2661_EEPROM_ANTENNA); 2204 /* XXX: test if different from 0xffff? */ 2205 sc->rf_rev = (val >> 11) & 0x1f; 2206 sc->hw_radio = (val >> 10) & 0x1; 2207 sc->rx_ant = (val >> 4) & 0x3; 2208 sc->tx_ant = (val >> 2) & 0x3; 2209 sc->nb_ant = val & 0x3; 2210 2211 DPRINTF(sc, "RF revision=%d\n", sc->rf_rev); 2212 2213 val = rt2661_eeprom_read(sc, RT2661_EEPROM_CONFIG2); 2214 sc->ext_5ghz_lna = (val >> 6) & 0x1; 2215 sc->ext_2ghz_lna = (val >> 4) & 0x1; 2216 2217 DPRINTF(sc, "External 2GHz LNA=%d\nExternal 5GHz LNA=%d\n", 2218 sc->ext_2ghz_lna, sc->ext_5ghz_lna); 2219 2220 val = rt2661_eeprom_read(sc, RT2661_EEPROM_RSSI_2GHZ_OFFSET); 2221 if ((val & 0xff) != 0xff) 2222 sc->rssi_2ghz_corr = (int8_t)(val & 0xff); /* signed */ 2223 2224 /* Only [-10, 10] is valid */ 2225 if (sc->rssi_2ghz_corr < -10 || sc->rssi_2ghz_corr > 10) 2226 sc->rssi_2ghz_corr = 0; 2227 2228 val = rt2661_eeprom_read(sc, RT2661_EEPROM_RSSI_5GHZ_OFFSET); 2229 if ((val & 0xff) != 0xff) 2230 sc->rssi_5ghz_corr = (int8_t)(val & 0xff); /* signed */ 2231 2232 /* Only [-10, 10] is valid */ 2233 if (sc->rssi_5ghz_corr < -10 || sc->rssi_5ghz_corr > 10) 2234 sc->rssi_5ghz_corr = 0; 2235 2236 /* adjust RSSI correction for external low-noise amplifier */ 2237 if (sc->ext_2ghz_lna) 2238 sc->rssi_2ghz_corr -= 14; 2239 if (sc->ext_5ghz_lna) 2240 sc->rssi_5ghz_corr -= 14; 2241 2242 DPRINTF(sc, "RSSI 2GHz corr=%d\nRSSI 5GHz corr=%d\n", 2243 sc->rssi_2ghz_corr, sc->rssi_5ghz_corr); 2244 2245 val = rt2661_eeprom_read(sc, RT2661_EEPROM_FREQ_OFFSET); 2246 if ((val >> 8) != 0xff) 2247 sc->rfprog = (val >> 8) & 0x3; 2248 if ((val & 0xff) != 0xff) 2249 sc->rffreq = val & 0xff; 2250 2251 DPRINTF(sc, "RF prog=%d\nRF freq=%d\n", sc->rfprog, sc->rffreq); 2252 2253 /* read Tx power for all a/b/g channels */ 2254 for (i = 0; i < 19; i++) { 2255 val = rt2661_eeprom_read(sc, RT2661_EEPROM_TXPOWER + i); 2256 sc->txpow[i * 2] = (int8_t)(val >> 8); /* signed */ 2257 DPRINTF(sc, "Channel=%d Tx power=%d\n", 2258 rt2661_rf5225_1[i * 2].chan, sc->txpow[i * 2]); 2259 sc->txpow[i * 2 + 1] = (int8_t)(val & 0xff); /* signed */ 2260 DPRINTF(sc, "Channel=%d Tx power=%d\n", 2261 rt2661_rf5225_1[i * 2 + 1].chan, sc->txpow[i * 2 + 1]); 2262 } 2263 2264 /* read vendor-specific BBP values */ 2265 for (i = 0; i < 16; i++) { 2266 val = rt2661_eeprom_read(sc, RT2661_EEPROM_BBP_BASE + i); 2267 if (val == 0 || val == 0xffff) 2268 continue; /* skip invalid entries */ 2269 sc->bbp_prom[i].reg = val >> 8; 2270 sc->bbp_prom[i].val = val & 0xff; 2271 DPRINTF(sc, "BBP R%d=%02x\n", sc->bbp_prom[i].reg, 2272 sc->bbp_prom[i].val); 2273 } 2274} 2275 2276static int 2277rt2661_bbp_init(struct rt2661_softc *sc) 2278{ 2279#define N(a) (sizeof (a) / sizeof ((a)[0])) 2280 int i, ntries; 2281 uint8_t val; 2282 2283 /* wait for BBP to be ready */ 2284 for (ntries = 0; ntries < 100; ntries++) { 2285 val = rt2661_bbp_read(sc, 0); 2286 if (val != 0 && val != 0xff) 2287 break; 2288 DELAY(100); 2289 } 2290 if (ntries == 100) { 2291 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2292 return EIO; 2293 } 2294 2295 /* initialize BBP registers to default values */ 2296 for (i = 0; i < N(rt2661_def_bbp); i++) { 2297 rt2661_bbp_write(sc, rt2661_def_bbp[i].reg, 2298 rt2661_def_bbp[i].val); 2299 } 2300 2301 /* write vendor-specific BBP values (from EEPROM) */ 2302 for (i = 0; i < 16; i++) { 2303 if (sc->bbp_prom[i].reg == 0) 2304 continue; 2305 rt2661_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2306 } 2307 2308 return 0; 2309#undef N 2310} 2311 2312static void 2313rt2661_init_locked(struct rt2661_softc *sc) 2314{ 2315#define N(a) (sizeof (a) / sizeof ((a)[0])) 2316 struct ifnet *ifp = sc->sc_ifp; 2317 struct ieee80211com *ic = ifp->if_l2com; 2318 uint32_t tmp, sta[3]; 2319 int i, error, ntries; 2320 2321 RAL_LOCK_ASSERT(sc); 2322 2323 if ((sc->sc_flags & RAL_FW_LOADED) == 0) { 2324 error = rt2661_load_microcode(sc); 2325 if (error != 0) { 2326 if_printf(ifp, 2327 "%s: could not load 8051 microcode, error %d\n", 2328 __func__, error); 2329 return; 2330 } 2331 sc->sc_flags |= RAL_FW_LOADED; 2332 } 2333 2334 rt2661_stop_locked(sc); 2335 2336 /* initialize Tx rings */ 2337 RAL_WRITE(sc, RT2661_AC1_BASE_CSR, sc->txq[1].physaddr); 2338 RAL_WRITE(sc, RT2661_AC0_BASE_CSR, sc->txq[0].physaddr); 2339 RAL_WRITE(sc, RT2661_AC2_BASE_CSR, sc->txq[2].physaddr); 2340 RAL_WRITE(sc, RT2661_AC3_BASE_CSR, sc->txq[3].physaddr); 2341 2342 /* initialize Mgt ring */ 2343 RAL_WRITE(sc, RT2661_MGT_BASE_CSR, sc->mgtq.physaddr); 2344 2345 /* initialize Rx ring */ 2346 RAL_WRITE(sc, RT2661_RX_BASE_CSR, sc->rxq.physaddr); 2347 2348 /* initialize Tx rings sizes */ 2349 RAL_WRITE(sc, RT2661_TX_RING_CSR0, 2350 RT2661_TX_RING_COUNT << 24 | 2351 RT2661_TX_RING_COUNT << 16 | 2352 RT2661_TX_RING_COUNT << 8 | 2353 RT2661_TX_RING_COUNT); 2354 2355 RAL_WRITE(sc, RT2661_TX_RING_CSR1, 2356 RT2661_TX_DESC_WSIZE << 16 | 2357 RT2661_TX_RING_COUNT << 8 | /* XXX: HCCA ring unused */ 2358 RT2661_MGT_RING_COUNT); 2359 2360 /* initialize Rx rings */ 2361 RAL_WRITE(sc, RT2661_RX_RING_CSR, 2362 RT2661_RX_DESC_BACK << 16 | 2363 RT2661_RX_DESC_WSIZE << 8 | 2364 RT2661_RX_RING_COUNT); 2365 2366 /* XXX: some magic here */ 2367 RAL_WRITE(sc, RT2661_TX_DMA_DST_CSR, 0xaa); 2368 2369 /* load base addresses of all 5 Tx rings (4 data + 1 mgt) */ 2370 RAL_WRITE(sc, RT2661_LOAD_TX_RING_CSR, 0x1f); 2371 2372 /* load base address of Rx ring */ 2373 RAL_WRITE(sc, RT2661_RX_CNTL_CSR, 2); 2374 2375 /* initialize MAC registers to default values */ 2376 for (i = 0; i < N(rt2661_def_mac); i++) 2377 RAL_WRITE(sc, rt2661_def_mac[i].reg, rt2661_def_mac[i].val); 2378 2379 rt2661_set_macaddr(sc, IF_LLADDR(ifp)); 2380 2381 /* set host ready */ 2382 RAL_WRITE(sc, RT2661_MAC_CSR1, 3); 2383 RAL_WRITE(sc, RT2661_MAC_CSR1, 0); 2384 2385 /* wait for BBP/RF to wakeup */ 2386 for (ntries = 0; ntries < 1000; ntries++) { 2387 if (RAL_READ(sc, RT2661_MAC_CSR12) & 8) 2388 break; 2389 DELAY(1000); 2390 } 2391 if (ntries == 1000) { 2392 printf("timeout waiting for BBP/RF to wakeup\n"); 2393 rt2661_stop_locked(sc); 2394 return; 2395 } 2396 2397 if (rt2661_bbp_init(sc) != 0) { 2398 rt2661_stop_locked(sc); 2399 return; 2400 } 2401 2402 /* select default channel */ 2403 sc->sc_curchan = ic->ic_curchan; 2404 rt2661_select_band(sc, sc->sc_curchan); 2405 rt2661_select_antenna(sc); 2406 rt2661_set_chan(sc, sc->sc_curchan); 2407 2408 /* update Rx filter */ 2409 tmp = RAL_READ(sc, RT2661_TXRX_CSR0) & 0xffff; 2410 2411 tmp |= RT2661_DROP_PHY_ERROR | RT2661_DROP_CRC_ERROR; 2412 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2413 tmp |= RT2661_DROP_CTL | RT2661_DROP_VER_ERROR | 2414 RT2661_DROP_ACKCTS; 2415 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2416 ic->ic_opmode != IEEE80211_M_MBSS) 2417 tmp |= RT2661_DROP_TODS; 2418 if (!(ifp->if_flags & IFF_PROMISC)) 2419 tmp |= RT2661_DROP_NOT_TO_ME; 2420 } 2421 2422 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp); 2423 2424 /* clear STA registers */ 2425 RAL_READ_REGION_4(sc, RT2661_STA_CSR0, sta, N(sta)); 2426 2427 /* initialize ASIC */ 2428 RAL_WRITE(sc, RT2661_MAC_CSR1, 4); 2429 2430 /* clear any pending interrupt */ 2431 RAL_WRITE(sc, RT2661_INT_SOURCE_CSR, 0xffffffff); 2432 2433 /* enable interrupts */ 2434 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0x0000ff10); 2435 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0); 2436 2437 /* kick Rx */ 2438 RAL_WRITE(sc, RT2661_RX_CNTL_CSR, 1); 2439 2440 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2441 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2442 2443 callout_reset(&sc->watchdog_ch, hz, rt2661_watchdog, sc); 2444#undef N 2445} 2446 2447static void 2448rt2661_init(void *priv) 2449{ 2450 struct rt2661_softc *sc = priv; 2451 struct ifnet *ifp = sc->sc_ifp; 2452 struct ieee80211com *ic = ifp->if_l2com; 2453 2454 RAL_LOCK(sc); 2455 rt2661_init_locked(sc); 2456 RAL_UNLOCK(sc); 2457 2458 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2459 ieee80211_start_all(ic); /* start all vap's */ 2460} 2461 2462void 2463rt2661_stop_locked(struct rt2661_softc *sc) 2464{ 2465 struct ifnet *ifp = sc->sc_ifp; 2466 uint32_t tmp; 2467 volatile int *flags = &sc->sc_flags; 2468 2469 while (*flags & RAL_INPUT_RUNNING) 2470 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2471 2472 callout_stop(&sc->watchdog_ch); 2473 sc->sc_tx_timer = 0; 2474 2475 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2476 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2477 2478 /* abort Tx (for all 5 Tx rings) */ 2479 RAL_WRITE(sc, RT2661_TX_CNTL_CSR, 0x1f << 16); 2480 2481 /* disable Rx (value remains after reset!) */ 2482 tmp = RAL_READ(sc, RT2661_TXRX_CSR0); 2483 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp | RT2661_DISABLE_RX); 2484 2485 /* reset ASIC */ 2486 RAL_WRITE(sc, RT2661_MAC_CSR1, 3); 2487 RAL_WRITE(sc, RT2661_MAC_CSR1, 0); 2488 2489 /* disable interrupts */ 2490 RAL_WRITE(sc, RT2661_INT_MASK_CSR, 0xffffffff); 2491 RAL_WRITE(sc, RT2661_MCU_INT_MASK_CSR, 0xffffffff); 2492 2493 /* clear any pending interrupt */ 2494 RAL_WRITE(sc, RT2661_INT_SOURCE_CSR, 0xffffffff); 2495 RAL_WRITE(sc, RT2661_MCU_INT_SOURCE_CSR, 0xffffffff); 2496 2497 /* reset Tx and Rx rings */ 2498 rt2661_reset_tx_ring(sc, &sc->txq[0]); 2499 rt2661_reset_tx_ring(sc, &sc->txq[1]); 2500 rt2661_reset_tx_ring(sc, &sc->txq[2]); 2501 rt2661_reset_tx_ring(sc, &sc->txq[3]); 2502 rt2661_reset_tx_ring(sc, &sc->mgtq); 2503 rt2661_reset_rx_ring(sc, &sc->rxq); 2504 } 2505} 2506 2507void 2508rt2661_stop(void *priv) 2509{ 2510 struct rt2661_softc *sc = priv; 2511 2512 RAL_LOCK(sc); 2513 rt2661_stop_locked(sc); 2514 RAL_UNLOCK(sc); 2515} 2516 2517static int 2518rt2661_load_microcode(struct rt2661_softc *sc) 2519{ 2520 struct ifnet *ifp = sc->sc_ifp; 2521 const struct firmware *fp; 2522 const char *imagename; 2523 int ntries, error; 2524 2525 RAL_LOCK_ASSERT(sc); 2526 2527 switch (sc->sc_id) { 2528 case 0x0301: imagename = "rt2561sfw"; break; 2529 case 0x0302: imagename = "rt2561fw"; break; 2530 case 0x0401: imagename = "rt2661fw"; break; 2531 default: 2532 if_printf(ifp, "%s: unexpected pci device id 0x%x, " 2533 "don't know how to retrieve firmware\n", 2534 __func__, sc->sc_id); 2535 return EINVAL; 2536 } 2537 RAL_UNLOCK(sc); 2538 fp = firmware_get(imagename); 2539 RAL_LOCK(sc); 2540 if (fp == NULL) { 2541 if_printf(ifp, "%s: unable to retrieve firmware image %s\n", 2542 __func__, imagename); 2543 return EINVAL; 2544 } 2545 2546 /* 2547 * Load 8051 microcode into NIC. 2548 */ 2549 /* reset 8051 */ 2550 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, RT2661_MCU_RESET); 2551 2552 /* cancel any pending Host to MCU command */ 2553 RAL_WRITE(sc, RT2661_H2M_MAILBOX_CSR, 0); 2554 RAL_WRITE(sc, RT2661_M2H_CMD_DONE_CSR, 0xffffffff); 2555 RAL_WRITE(sc, RT2661_HOST_CMD_CSR, 0); 2556 2557 /* write 8051's microcode */ 2558 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, RT2661_MCU_RESET | RT2661_MCU_SEL); 2559 RAL_WRITE_REGION_1(sc, RT2661_MCU_CODE_BASE, fp->data, fp->datasize); 2560 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, RT2661_MCU_RESET); 2561 2562 /* kick 8051's ass */ 2563 RAL_WRITE(sc, RT2661_MCU_CNTL_CSR, 0); 2564 2565 /* wait for 8051 to initialize */ 2566 for (ntries = 0; ntries < 500; ntries++) { 2567 if (RAL_READ(sc, RT2661_MCU_CNTL_CSR) & RT2661_MCU_READY) 2568 break; 2569 DELAY(100); 2570 } 2571 if (ntries == 500) { 2572 if_printf(ifp, "%s: timeout waiting for MCU to initialize\n", 2573 __func__); 2574 error = EIO; 2575 } else 2576 error = 0; 2577 2578 firmware_put(fp, FIRMWARE_UNLOAD); 2579 return error; 2580} 2581 2582#ifdef notyet 2583/* 2584 * Dynamically tune Rx sensitivity (BBP register 17) based on average RSSI and 2585 * false CCA count. This function is called periodically (every seconds) when 2586 * in the RUN state. Values taken from the reference driver. 2587 */ 2588static void 2589rt2661_rx_tune(struct rt2661_softc *sc) 2590{ 2591 uint8_t bbp17; 2592 uint16_t cca; 2593 int lo, hi, dbm; 2594 2595 /* 2596 * Tuning range depends on operating band and on the presence of an 2597 * external low-noise amplifier. 2598 */ 2599 lo = 0x20; 2600 if (IEEE80211_IS_CHAN_5GHZ(sc->sc_curchan)) 2601 lo += 0x08; 2602 if ((IEEE80211_IS_CHAN_2GHZ(sc->sc_curchan) && sc->ext_2ghz_lna) || 2603 (IEEE80211_IS_CHAN_5GHZ(sc->sc_curchan) && sc->ext_5ghz_lna)) 2604 lo += 0x10; 2605 hi = lo + 0x20; 2606 2607 /* retrieve false CCA count since last call (clear on read) */ 2608 cca = RAL_READ(sc, RT2661_STA_CSR1) & 0xffff; 2609 2610 if (dbm >= -35) { 2611 bbp17 = 0x60; 2612 } else if (dbm >= -58) { 2613 bbp17 = hi; 2614 } else if (dbm >= -66) { 2615 bbp17 = lo + 0x10; 2616 } else if (dbm >= -74) { 2617 bbp17 = lo + 0x08; 2618 } else { 2619 /* RSSI < -74dBm, tune using false CCA count */ 2620 2621 bbp17 = sc->bbp17; /* current value */ 2622 2623 hi -= 2 * (-74 - dbm); 2624 if (hi < lo) 2625 hi = lo; 2626 2627 if (bbp17 > hi) { 2628 bbp17 = hi; 2629 2630 } else if (cca > 512) { 2631 if (++bbp17 > hi) 2632 bbp17 = hi; 2633 } else if (cca < 100) { 2634 if (--bbp17 < lo) 2635 bbp17 = lo; 2636 } 2637 } 2638 2639 if (bbp17 != sc->bbp17) { 2640 rt2661_bbp_write(sc, 17, bbp17); 2641 sc->bbp17 = bbp17; 2642 } 2643} 2644 2645/* 2646 * Enter/Leave radar detection mode. 2647 * This is for 802.11h additional regulatory domains. 2648 */ 2649static void 2650rt2661_radar_start(struct rt2661_softc *sc) 2651{ 2652 uint32_t tmp; 2653 2654 /* disable Rx */ 2655 tmp = RAL_READ(sc, RT2661_TXRX_CSR0); 2656 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp | RT2661_DISABLE_RX); 2657 2658 rt2661_bbp_write(sc, 82, 0x20); 2659 rt2661_bbp_write(sc, 83, 0x00); 2660 rt2661_bbp_write(sc, 84, 0x40); 2661 2662 /* save current BBP registers values */ 2663 sc->bbp18 = rt2661_bbp_read(sc, 18); 2664 sc->bbp21 = rt2661_bbp_read(sc, 21); 2665 sc->bbp22 = rt2661_bbp_read(sc, 22); 2666 sc->bbp16 = rt2661_bbp_read(sc, 16); 2667 sc->bbp17 = rt2661_bbp_read(sc, 17); 2668 sc->bbp64 = rt2661_bbp_read(sc, 64); 2669 2670 rt2661_bbp_write(sc, 18, 0xff); 2671 rt2661_bbp_write(sc, 21, 0x3f); 2672 rt2661_bbp_write(sc, 22, 0x3f); 2673 rt2661_bbp_write(sc, 16, 0xbd); 2674 rt2661_bbp_write(sc, 17, sc->ext_5ghz_lna ? 0x44 : 0x34); 2675 rt2661_bbp_write(sc, 64, 0x21); 2676 2677 /* restore Rx filter */ 2678 RAL_WRITE(sc, RT2661_TXRX_CSR0, tmp); 2679} 2680 2681static int 2682rt2661_radar_stop(struct rt2661_softc *sc) 2683{ 2684 uint8_t bbp66; 2685 2686 /* read radar detection result */ 2687 bbp66 = rt2661_bbp_read(sc, 66); 2688 2689 /* restore BBP registers values */ 2690 rt2661_bbp_write(sc, 16, sc->bbp16); 2691 rt2661_bbp_write(sc, 17, sc->bbp17); 2692 rt2661_bbp_write(sc, 18, sc->bbp18); 2693 rt2661_bbp_write(sc, 21, sc->bbp21); 2694 rt2661_bbp_write(sc, 22, sc->bbp22); 2695 rt2661_bbp_write(sc, 64, sc->bbp64); 2696 2697 return bbp66 == 1; 2698} 2699#endif 2700 2701static int 2702rt2661_prepare_beacon(struct rt2661_softc *sc, struct ieee80211vap *vap) 2703{ 2704 struct ieee80211com *ic = vap->iv_ic; 2705 struct ieee80211_beacon_offsets bo; 2706 struct rt2661_tx_desc desc; 2707 struct mbuf *m0; 2708 int rate; 2709 2710 m0 = ieee80211_beacon_alloc(vap->iv_bss, &bo); 2711 if (m0 == NULL) { 2712 device_printf(sc->sc_dev, "could not allocate beacon frame\n"); 2713 return ENOBUFS; 2714 } 2715 2716 /* send beacons at the lowest available rate */ 2717 rate = IEEE80211_IS_CHAN_5GHZ(ic->ic_bsschan) ? 12 : 2; 2718 2719 rt2661_setup_tx_desc(sc, &desc, RT2661_TX_TIMESTAMP, RT2661_TX_HWSEQ, 2720 m0->m_pkthdr.len, rate, NULL, 0, RT2661_QID_MGT); 2721 2722 /* copy the first 24 bytes of Tx descriptor into NIC memory */ 2723 RAL_WRITE_REGION_1(sc, RT2661_HW_BEACON_BASE0, (uint8_t *)&desc, 24); 2724 2725 /* copy beacon header and payload into NIC memory */ 2726 RAL_WRITE_REGION_1(sc, RT2661_HW_BEACON_BASE0 + 24, 2727 mtod(m0, uint8_t *), m0->m_pkthdr.len); 2728 2729 m_freem(m0); 2730 2731 return 0; 2732} 2733 2734/* 2735 * Enable TSF synchronization and tell h/w to start sending beacons for IBSS 2736 * and HostAP operating modes. 2737 */ 2738static void 2739rt2661_enable_tsf_sync(struct rt2661_softc *sc) 2740{ 2741 struct ifnet *ifp = sc->sc_ifp; 2742 struct ieee80211com *ic = ifp->if_l2com; 2743 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2744 uint32_t tmp; 2745 2746 if (vap->iv_opmode != IEEE80211_M_STA) { 2747 /* 2748 * Change default 16ms TBTT adjustment to 8ms. 2749 * Must be done before enabling beacon generation. 2750 */ 2751 RAL_WRITE(sc, RT2661_TXRX_CSR10, 1 << 12 | 8); 2752 } 2753 2754 tmp = RAL_READ(sc, RT2661_TXRX_CSR9) & 0xff000000; 2755 2756 /* set beacon interval (in 1/16ms unit) */ 2757 tmp |= vap->iv_bss->ni_intval * 16; 2758 2759 tmp |= RT2661_TSF_TICKING | RT2661_ENABLE_TBTT; 2760 if (vap->iv_opmode == IEEE80211_M_STA) 2761 tmp |= RT2661_TSF_MODE(1); 2762 else 2763 tmp |= RT2661_TSF_MODE(2) | RT2661_GENERATE_BEACON; 2764 2765 RAL_WRITE(sc, RT2661_TXRX_CSR9, tmp); 2766} 2767 2768static void 2769rt2661_enable_tsf(struct rt2661_softc *sc) 2770{ 2771 RAL_WRITE(sc, RT2661_TXRX_CSR9, 2772 (RAL_READ(sc, RT2661_TXRX_CSR9) & 0xff000000) 2773 | RT2661_TSF_TICKING | RT2661_TSF_MODE(2)); 2774} 2775 2776/* 2777 * Retrieve the "Received Signal Strength Indicator" from the raw values 2778 * contained in Rx descriptors. The computation depends on which band the 2779 * frame was received. Correction values taken from the reference driver. 2780 */ 2781static int 2782rt2661_get_rssi(struct rt2661_softc *sc, uint8_t raw) 2783{ 2784 int lna, agc, rssi; 2785 2786 lna = (raw >> 5) & 0x3; 2787 agc = raw & 0x1f; 2788 2789 if (lna == 0) { 2790 /* 2791 * No mapping available. 2792 * 2793 * NB: Since RSSI is relative to noise floor, -1 is 2794 * adequate for caller to know error happened. 2795 */ 2796 return -1; 2797 } 2798 2799 rssi = (2 * agc) - RT2661_NOISE_FLOOR; 2800 2801 if (IEEE80211_IS_CHAN_2GHZ(sc->sc_curchan)) { 2802 rssi += sc->rssi_2ghz_corr; 2803 2804 if (lna == 1) 2805 rssi -= 64; 2806 else if (lna == 2) 2807 rssi -= 74; 2808 else if (lna == 3) 2809 rssi -= 90; 2810 } else { 2811 rssi += sc->rssi_5ghz_corr; 2812 2813 if (lna == 1) 2814 rssi -= 64; 2815 else if (lna == 2) 2816 rssi -= 86; 2817 else if (lna == 3) 2818 rssi -= 100; 2819 } 2820 return rssi; 2821} 2822 2823static void 2824rt2661_scan_start(struct ieee80211com *ic) 2825{ 2826 struct ifnet *ifp = ic->ic_ifp; 2827 struct rt2661_softc *sc = ifp->if_softc; 2828 uint32_t tmp; 2829 2830 /* abort TSF synchronization */ 2831 tmp = RAL_READ(sc, RT2661_TXRX_CSR9); 2832 RAL_WRITE(sc, RT2661_TXRX_CSR9, tmp & ~0xffffff); 2833 rt2661_set_bssid(sc, ifp->if_broadcastaddr); 2834} 2835 2836static void 2837rt2661_scan_end(struct ieee80211com *ic) 2838{ 2839 struct ifnet *ifp = ic->ic_ifp; 2840 struct rt2661_softc *sc = ifp->if_softc; 2841 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2842 2843 rt2661_enable_tsf_sync(sc); 2844 /* XXX keep local copy */ 2845 rt2661_set_bssid(sc, vap->iv_bss->ni_bssid); 2846} 2847 2848static void 2849rt2661_set_channel(struct ieee80211com *ic) 2850{ 2851 struct ifnet *ifp = ic->ic_ifp; 2852 struct rt2661_softc *sc = ifp->if_softc; 2853 2854 RAL_LOCK(sc); 2855 rt2661_set_chan(sc, ic->ic_curchan); 2856 RAL_UNLOCK(sc); 2857 2858} 2859