rt2560.c revision 217511
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 217511 2011-01-17 20:15:15Z bschmidt $ */ 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 217511 2011-01-17 20:15:15Z bschmidt $"); 22 23/*- 24 * Ralink Technology RT2560 chipset driver 25 * http://www.ralinktech.com/ 26 */ 27 28#include <sys/param.h> 29#include <sys/sysctl.h> 30#include <sys/sockio.h> 31#include <sys/mbuf.h> 32#include <sys/kernel.h> 33#include <sys/socket.h> 34#include <sys/systm.h> 35#include <sys/malloc.h> 36#include <sys/lock.h> 37#include <sys/mutex.h> 38#include <sys/module.h> 39#include <sys/bus.h> 40#include <sys/endian.h> 41 42#include <machine/bus.h> 43#include <machine/resource.h> 44#include <sys/rman.h> 45 46#include <net/bpf.h> 47#include <net/if.h> 48#include <net/if_arp.h> 49#include <net/ethernet.h> 50#include <net/if_dl.h> 51#include <net/if_media.h> 52#include <net/if_types.h> 53 54#include <net80211/ieee80211_var.h> 55#include <net80211/ieee80211_radiotap.h> 56#include <net80211/ieee80211_regdomain.h> 57#include <net80211/ieee80211_ratectl.h> 58 59#include <netinet/in.h> 60#include <netinet/in_systm.h> 61#include <netinet/in_var.h> 62#include <netinet/ip.h> 63#include <netinet/if_ether.h> 64 65#include <dev/ral/rt2560reg.h> 66#include <dev/ral/rt2560var.h> 67 68#define RT2560_RSSI(sc, rssi) \ 69 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 70 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 71 72#define RAL_DEBUG 73#ifdef RAL_DEBUG 74#define DPRINTF(sc, fmt, ...) do { \ 75 if (sc->sc_debug > 0) \ 76 printf(fmt, __VA_ARGS__); \ 77} while (0) 78#define DPRINTFN(sc, n, fmt, ...) do { \ 79 if (sc->sc_debug >= (n)) \ 80 printf(fmt, __VA_ARGS__); \ 81} while (0) 82#else 83#define DPRINTF(sc, fmt, ...) 84#define DPRINTFN(sc, n, fmt, ...) 85#endif 86 87static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 88 const char name[IFNAMSIZ], int unit, int opmode, 89 int flags, const uint8_t bssid[IEEE80211_ADDR_LEN], 90 const uint8_t mac[IEEE80211_ADDR_LEN]); 91static void rt2560_vap_delete(struct ieee80211vap *); 92static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 93 int); 94static int rt2560_alloc_tx_ring(struct rt2560_softc *, 95 struct rt2560_tx_ring *, int); 96static void rt2560_reset_tx_ring(struct rt2560_softc *, 97 struct rt2560_tx_ring *); 98static void rt2560_free_tx_ring(struct rt2560_softc *, 99 struct rt2560_tx_ring *); 100static int rt2560_alloc_rx_ring(struct rt2560_softc *, 101 struct rt2560_rx_ring *, int); 102static void rt2560_reset_rx_ring(struct rt2560_softc *, 103 struct rt2560_rx_ring *); 104static void rt2560_free_rx_ring(struct rt2560_softc *, 105 struct rt2560_rx_ring *); 106static int rt2560_newstate(struct ieee80211vap *, 107 enum ieee80211_state, int); 108static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 109static void rt2560_encryption_intr(struct rt2560_softc *); 110static void rt2560_tx_intr(struct rt2560_softc *); 111static void rt2560_prio_intr(struct rt2560_softc *); 112static void rt2560_decryption_intr(struct rt2560_softc *); 113static void rt2560_rx_intr(struct rt2560_softc *); 114static void rt2560_beacon_update(struct ieee80211vap *, int item); 115static void rt2560_beacon_expire(struct rt2560_softc *); 116static void rt2560_wakeup_expire(struct rt2560_softc *); 117static void rt2560_scan_start(struct ieee80211com *); 118static void rt2560_scan_end(struct ieee80211com *); 119static void rt2560_set_channel(struct ieee80211com *); 120static void rt2560_setup_tx_desc(struct rt2560_softc *, 121 struct rt2560_tx_desc *, uint32_t, int, int, int, 122 bus_addr_t); 123static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 124 struct ieee80211_node *); 125static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 126 struct ieee80211_node *); 127static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 128 struct ieee80211_node *); 129static void rt2560_start_locked(struct ifnet *); 130static void rt2560_start(struct ifnet *); 131static void rt2560_watchdog(void *); 132static int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 133static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 134 uint8_t); 135static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 136static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 137 uint32_t); 138static void rt2560_set_chan(struct rt2560_softc *, 139 struct ieee80211_channel *); 140#if 0 141static void rt2560_disable_rf_tune(struct rt2560_softc *); 142#endif 143static void rt2560_enable_tsf_sync(struct rt2560_softc *); 144static void rt2560_enable_tsf(struct rt2560_softc *); 145static void rt2560_update_plcp(struct rt2560_softc *); 146static void rt2560_update_slot(struct ifnet *); 147static void rt2560_set_basicrates(struct rt2560_softc *); 148static void rt2560_update_led(struct rt2560_softc *, int, int); 149static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 150static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 151static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 152static void rt2560_update_promisc(struct ifnet *); 153static const char *rt2560_get_rf(int); 154static void rt2560_read_config(struct rt2560_softc *); 155static int rt2560_bbp_init(struct rt2560_softc *); 156static void rt2560_set_txantenna(struct rt2560_softc *, int); 157static void rt2560_set_rxantenna(struct rt2560_softc *, int); 158static void rt2560_init_locked(struct rt2560_softc *); 159static void rt2560_init(void *); 160static void rt2560_stop_locked(struct rt2560_softc *); 161static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 162 const struct ieee80211_bpf_params *); 163 164static const struct { 165 uint32_t reg; 166 uint32_t val; 167} rt2560_def_mac[] = { 168 RT2560_DEF_MAC 169}; 170 171static const struct { 172 uint8_t reg; 173 uint8_t val; 174} rt2560_def_bbp[] = { 175 RT2560_DEF_BBP 176}; 177 178static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 179static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 180static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 181static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 182static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 183static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 184static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 185static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 186 187static const struct { 188 uint8_t chan; 189 uint32_t r1, r2, r4; 190} rt2560_rf5222[] = { 191 RT2560_RF5222 192}; 193 194int 195rt2560_attach(device_t dev, int id) 196{ 197 struct rt2560_softc *sc = device_get_softc(dev); 198 struct ieee80211com *ic; 199 struct ifnet *ifp; 200 int error; 201 uint8_t bands; 202 uint8_t macaddr[IEEE80211_ADDR_LEN]; 203 204 sc->sc_dev = dev; 205 206 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 207 MTX_DEF | MTX_RECURSE); 208 209 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 210 211 /* retrieve RT2560 rev. no */ 212 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 213 214 /* retrieve RF rev. no and various other things from EEPROM */ 215 rt2560_read_config(sc); 216 217 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 218 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 219 220 /* 221 * Allocate Tx and Rx rings. 222 */ 223 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 224 if (error != 0) { 225 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 226 goto fail1; 227 } 228 229 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 230 if (error != 0) { 231 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 232 goto fail2; 233 } 234 235 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 236 if (error != 0) { 237 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 238 goto fail3; 239 } 240 241 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 242 if (error != 0) { 243 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 244 goto fail4; 245 } 246 247 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 248 if (error != 0) { 249 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 250 goto fail5; 251 } 252 253 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 254 if (ifp == NULL) { 255 device_printf(sc->sc_dev, "can not if_alloc()\n"); 256 goto fail6; 257 } 258 ic = ifp->if_l2com; 259 260 /* retrieve MAC address */ 261 rt2560_get_macaddr(sc, macaddr); 262 263 ifp->if_softc = sc; 264 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 265 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 266 ifp->if_init = rt2560_init; 267 ifp->if_ioctl = rt2560_ioctl; 268 ifp->if_start = rt2560_start; 269 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 270 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 271 IFQ_SET_READY(&ifp->if_snd); 272 273 ic->ic_ifp = ifp; 274 ic->ic_opmode = IEEE80211_M_STA; 275 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 276 277 /* set device capabilities */ 278 ic->ic_caps = 279 IEEE80211_C_STA /* station mode */ 280 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 281 | IEEE80211_C_HOSTAP /* hostap mode */ 282 | IEEE80211_C_MONITOR /* monitor mode */ 283 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 284 | IEEE80211_C_WDS /* 4-address traffic works */ 285 | IEEE80211_C_MBSS /* mesh point link mode */ 286 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 287 | IEEE80211_C_SHSLOT /* short slot time supported */ 288 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 289 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 290#ifdef notyet 291 | IEEE80211_C_TXFRAG /* handle tx frags */ 292#endif 293 ; 294 295 bands = 0; 296 setbit(&bands, IEEE80211_MODE_11B); 297 setbit(&bands, IEEE80211_MODE_11G); 298 if (sc->rf_rev == RT2560_RF_5222) 299 setbit(&bands, IEEE80211_MODE_11A); 300 ieee80211_init_channels(ic, NULL, &bands); 301 302 ieee80211_ifattach(ic, macaddr); 303 ic->ic_raw_xmit = rt2560_raw_xmit; 304 ic->ic_updateslot = rt2560_update_slot; 305 ic->ic_update_promisc = rt2560_update_promisc; 306 ic->ic_scan_start = rt2560_scan_start; 307 ic->ic_scan_end = rt2560_scan_end; 308 ic->ic_set_channel = rt2560_set_channel; 309 310 ic->ic_vap_create = rt2560_vap_create; 311 ic->ic_vap_delete = rt2560_vap_delete; 312 313 ieee80211_radiotap_attach(ic, 314 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 315 RT2560_TX_RADIOTAP_PRESENT, 316 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 317 RT2560_RX_RADIOTAP_PRESENT); 318 319 /* 320 * Add a few sysctl knobs. 321 */ 322#ifdef RAL_DEBUG 323 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 324 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 325 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 326#endif 327 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 328 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 329 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 330 331 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 333 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 334 335 if (bootverbose) 336 ieee80211_announce(ic); 337 338 return 0; 339 340fail6: rt2560_free_rx_ring(sc, &sc->rxq); 341fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 342fail4: rt2560_free_tx_ring(sc, &sc->prioq); 343fail3: rt2560_free_tx_ring(sc, &sc->atimq); 344fail2: rt2560_free_tx_ring(sc, &sc->txq); 345fail1: mtx_destroy(&sc->sc_mtx); 346 347 return ENXIO; 348} 349 350int 351rt2560_detach(void *xsc) 352{ 353 struct rt2560_softc *sc = xsc; 354 struct ifnet *ifp = sc->sc_ifp; 355 struct ieee80211com *ic = ifp->if_l2com; 356 357 rt2560_stop(sc); 358 359 ieee80211_ifdetach(ic); 360 361 rt2560_free_tx_ring(sc, &sc->txq); 362 rt2560_free_tx_ring(sc, &sc->atimq); 363 rt2560_free_tx_ring(sc, &sc->prioq); 364 rt2560_free_tx_ring(sc, &sc->bcnq); 365 rt2560_free_rx_ring(sc, &sc->rxq); 366 367 if_free(ifp); 368 369 mtx_destroy(&sc->sc_mtx); 370 371 return 0; 372} 373 374static struct ieee80211vap * 375rt2560_vap_create(struct ieee80211com *ic, 376 const char name[IFNAMSIZ], int unit, int opmode, int flags, 377 const uint8_t bssid[IEEE80211_ADDR_LEN], 378 const uint8_t mac[IEEE80211_ADDR_LEN]) 379{ 380 struct ifnet *ifp = ic->ic_ifp; 381 struct rt2560_vap *rvp; 382 struct ieee80211vap *vap; 383 384 switch (opmode) { 385 case IEEE80211_M_STA: 386 case IEEE80211_M_IBSS: 387 case IEEE80211_M_AHDEMO: 388 case IEEE80211_M_MONITOR: 389 case IEEE80211_M_HOSTAP: 390 case IEEE80211_M_MBSS: 391 /* XXXRP: TBD */ 392 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 393 if_printf(ifp, "only 1 vap supported\n"); 394 return NULL; 395 } 396 if (opmode == IEEE80211_M_STA) 397 flags |= IEEE80211_CLONE_NOBEACONS; 398 break; 399 case IEEE80211_M_WDS: 400 if (TAILQ_EMPTY(&ic->ic_vaps) || 401 ic->ic_opmode != IEEE80211_M_HOSTAP) { 402 if_printf(ifp, "wds only supported in ap mode\n"); 403 return NULL; 404 } 405 /* 406 * Silently remove any request for a unique 407 * bssid; WDS vap's always share the local 408 * mac address. 409 */ 410 flags &= ~IEEE80211_CLONE_BSSID; 411 break; 412 default: 413 if_printf(ifp, "unknown opmode %d\n", opmode); 414 return NULL; 415 } 416 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 417 M_80211_VAP, M_NOWAIT | M_ZERO); 418 if (rvp == NULL) 419 return NULL; 420 vap = &rvp->ral_vap; 421 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 422 423 /* override state transition machine */ 424 rvp->ral_newstate = vap->iv_newstate; 425 vap->iv_newstate = rt2560_newstate; 426 vap->iv_update_beacon = rt2560_beacon_update; 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 437rt2560_vap_delete(struct ieee80211vap *vap) 438{ 439 struct rt2560_vap *rvp = RT2560_VAP(vap); 440 441 ieee80211_ratectl_deinit(vap); 442 ieee80211_vap_detach(vap); 443 free(rvp, M_80211_VAP); 444} 445 446void 447rt2560_resume(void *xsc) 448{ 449 struct rt2560_softc *sc = xsc; 450 struct ifnet *ifp = sc->sc_ifp; 451 452 if (ifp->if_flags & IFF_UP) 453 rt2560_init(sc); 454} 455 456static void 457rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 458{ 459 if (error != 0) 460 return; 461 462 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 463 464 *(bus_addr_t *)arg = segs[0].ds_addr; 465} 466 467static int 468rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 469 int count) 470{ 471 int i, error; 472 473 ring->count = count; 474 ring->queued = 0; 475 ring->cur = ring->next = 0; 476 ring->cur_encrypt = ring->next_encrypt = 0; 477 478 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 479 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 480 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 481 0, NULL, NULL, &ring->desc_dmat); 482 if (error != 0) { 483 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 484 goto fail; 485 } 486 487 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 488 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 489 if (error != 0) { 490 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 491 goto fail; 492 } 493 494 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 495 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 496 0); 497 if (error != 0) { 498 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 499 goto fail; 500 } 501 502 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 503 M_NOWAIT | M_ZERO); 504 if (ring->data == NULL) { 505 device_printf(sc->sc_dev, "could not allocate soft data\n"); 506 error = ENOMEM; 507 goto fail; 508 } 509 510 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 511 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 512 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 513 &ring->data_dmat); 514 if (error != 0) { 515 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 516 goto fail; 517 } 518 519 for (i = 0; i < count; i++) { 520 error = bus_dmamap_create(ring->data_dmat, 0, 521 &ring->data[i].map); 522 if (error != 0) { 523 device_printf(sc->sc_dev, "could not create DMA map\n"); 524 goto fail; 525 } 526 } 527 528 return 0; 529 530fail: rt2560_free_tx_ring(sc, ring); 531 return error; 532} 533 534static void 535rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 536{ 537 struct rt2560_tx_desc *desc; 538 struct rt2560_tx_data *data; 539 int i; 540 541 for (i = 0; i < ring->count; i++) { 542 desc = &ring->desc[i]; 543 data = &ring->data[i]; 544 545 if (data->m != NULL) { 546 bus_dmamap_sync(ring->data_dmat, data->map, 547 BUS_DMASYNC_POSTWRITE); 548 bus_dmamap_unload(ring->data_dmat, data->map); 549 m_freem(data->m); 550 data->m = NULL; 551 } 552 553 if (data->ni != NULL) { 554 ieee80211_free_node(data->ni); 555 data->ni = NULL; 556 } 557 558 desc->flags = 0; 559 } 560 561 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 562 563 ring->queued = 0; 564 ring->cur = ring->next = 0; 565 ring->cur_encrypt = ring->next_encrypt = 0; 566} 567 568static void 569rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 570{ 571 struct rt2560_tx_data *data; 572 int i; 573 574 if (ring->desc != NULL) { 575 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 576 BUS_DMASYNC_POSTWRITE); 577 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 578 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 579 } 580 581 if (ring->desc_dmat != NULL) 582 bus_dma_tag_destroy(ring->desc_dmat); 583 584 if (ring->data != NULL) { 585 for (i = 0; i < ring->count; i++) { 586 data = &ring->data[i]; 587 588 if (data->m != NULL) { 589 bus_dmamap_sync(ring->data_dmat, data->map, 590 BUS_DMASYNC_POSTWRITE); 591 bus_dmamap_unload(ring->data_dmat, data->map); 592 m_freem(data->m); 593 } 594 595 if (data->ni != NULL) 596 ieee80211_free_node(data->ni); 597 598 if (data->map != NULL) 599 bus_dmamap_destroy(ring->data_dmat, data->map); 600 } 601 602 free(ring->data, M_DEVBUF); 603 } 604 605 if (ring->data_dmat != NULL) 606 bus_dma_tag_destroy(ring->data_dmat); 607} 608 609static int 610rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 611 int count) 612{ 613 struct rt2560_rx_desc *desc; 614 struct rt2560_rx_data *data; 615 bus_addr_t physaddr; 616 int i, error; 617 618 ring->count = count; 619 ring->cur = ring->next = 0; 620 ring->cur_decrypt = 0; 621 622 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 623 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 624 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 625 0, NULL, NULL, &ring->desc_dmat); 626 if (error != 0) { 627 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 628 goto fail; 629 } 630 631 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 632 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 633 if (error != 0) { 634 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 635 goto fail; 636 } 637 638 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 639 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 640 0); 641 if (error != 0) { 642 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 643 goto fail; 644 } 645 646 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 647 M_NOWAIT | M_ZERO); 648 if (ring->data == NULL) { 649 device_printf(sc->sc_dev, "could not allocate soft data\n"); 650 error = ENOMEM; 651 goto fail; 652 } 653 654 /* 655 * Pre-allocate Rx buffers and populate Rx ring. 656 */ 657 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 658 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 659 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 660 if (error != 0) { 661 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 662 goto fail; 663 } 664 665 for (i = 0; i < count; i++) { 666 desc = &sc->rxq.desc[i]; 667 data = &sc->rxq.data[i]; 668 669 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 670 if (error != 0) { 671 device_printf(sc->sc_dev, "could not create DMA map\n"); 672 goto fail; 673 } 674 675 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 676 if (data->m == NULL) { 677 device_printf(sc->sc_dev, 678 "could not allocate rx mbuf\n"); 679 error = ENOMEM; 680 goto fail; 681 } 682 683 error = bus_dmamap_load(ring->data_dmat, data->map, 684 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 685 &physaddr, 0); 686 if (error != 0) { 687 device_printf(sc->sc_dev, 688 "could not load rx buf DMA map"); 689 goto fail; 690 } 691 692 desc->flags = htole32(RT2560_RX_BUSY); 693 desc->physaddr = htole32(physaddr); 694 } 695 696 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 697 698 return 0; 699 700fail: rt2560_free_rx_ring(sc, ring); 701 return error; 702} 703 704static void 705rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 706{ 707 int i; 708 709 for (i = 0; i < ring->count; i++) { 710 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 711 ring->data[i].drop = 0; 712 } 713 714 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 715 716 ring->cur = ring->next = 0; 717 ring->cur_decrypt = 0; 718} 719 720static void 721rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 722{ 723 struct rt2560_rx_data *data; 724 int i; 725 726 if (ring->desc != NULL) { 727 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 728 BUS_DMASYNC_POSTWRITE); 729 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 730 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 731 } 732 733 if (ring->desc_dmat != NULL) 734 bus_dma_tag_destroy(ring->desc_dmat); 735 736 if (ring->data != NULL) { 737 for (i = 0; i < ring->count; i++) { 738 data = &ring->data[i]; 739 740 if (data->m != NULL) { 741 bus_dmamap_sync(ring->data_dmat, data->map, 742 BUS_DMASYNC_POSTREAD); 743 bus_dmamap_unload(ring->data_dmat, data->map); 744 m_freem(data->m); 745 } 746 747 if (data->map != NULL) 748 bus_dmamap_destroy(ring->data_dmat, data->map); 749 } 750 751 free(ring->data, M_DEVBUF); 752 } 753 754 if (ring->data_dmat != NULL) 755 bus_dma_tag_destroy(ring->data_dmat); 756} 757 758static int 759rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 760{ 761 struct rt2560_vap *rvp = RT2560_VAP(vap); 762 struct ifnet *ifp = vap->iv_ic->ic_ifp; 763 struct rt2560_softc *sc = ifp->if_softc; 764 int error; 765 766 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 767 /* abort TSF synchronization */ 768 RAL_WRITE(sc, RT2560_CSR14, 0); 769 770 /* turn association led off */ 771 rt2560_update_led(sc, 0, 0); 772 } 773 774 error = rvp->ral_newstate(vap, nstate, arg); 775 776 if (error == 0 && nstate == IEEE80211_S_RUN) { 777 struct ieee80211_node *ni = vap->iv_bss; 778 struct mbuf *m; 779 780 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 781 rt2560_update_plcp(sc); 782 rt2560_set_basicrates(sc); 783 rt2560_set_bssid(sc, ni->ni_bssid); 784 } 785 786 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 787 vap->iv_opmode == IEEE80211_M_IBSS || 788 vap->iv_opmode == IEEE80211_M_MBSS) { 789 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 790 if (m == NULL) { 791 if_printf(ifp, "could not allocate beacon\n"); 792 return ENOBUFS; 793 } 794 ieee80211_ref_node(ni); 795 error = rt2560_tx_bcn(sc, m, ni); 796 if (error != 0) 797 return error; 798 } 799 800 /* turn assocation led on */ 801 rt2560_update_led(sc, 1, 0); 802 803 if (vap->iv_opmode != IEEE80211_M_MONITOR) 804 rt2560_enable_tsf_sync(sc); 805 else 806 rt2560_enable_tsf(sc); 807 } 808 return error; 809} 810 811/* 812 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 813 * 93C66). 814 */ 815static uint16_t 816rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 817{ 818 uint32_t tmp; 819 uint16_t val; 820 int n; 821 822 /* clock C once before the first command */ 823 RT2560_EEPROM_CTL(sc, 0); 824 825 RT2560_EEPROM_CTL(sc, RT2560_S); 826 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 827 RT2560_EEPROM_CTL(sc, RT2560_S); 828 829 /* write start bit (1) */ 830 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 831 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 832 833 /* write READ opcode (10) */ 834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 835 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 836 RT2560_EEPROM_CTL(sc, RT2560_S); 837 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 838 839 /* write address (A5-A0 or A7-A0) */ 840 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 841 for (; n >= 0; n--) { 842 RT2560_EEPROM_CTL(sc, RT2560_S | 843 (((addr >> n) & 1) << RT2560_SHIFT_D)); 844 RT2560_EEPROM_CTL(sc, RT2560_S | 845 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 846 } 847 848 RT2560_EEPROM_CTL(sc, RT2560_S); 849 850 /* read data Q15-Q0 */ 851 val = 0; 852 for (n = 15; n >= 0; n--) { 853 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 854 tmp = RAL_READ(sc, RT2560_CSR21); 855 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 856 RT2560_EEPROM_CTL(sc, RT2560_S); 857 } 858 859 RT2560_EEPROM_CTL(sc, 0); 860 861 /* clear Chip Select and clock C */ 862 RT2560_EEPROM_CTL(sc, RT2560_S); 863 RT2560_EEPROM_CTL(sc, 0); 864 RT2560_EEPROM_CTL(sc, RT2560_C); 865 866 return val; 867} 868 869/* 870 * Some frames were processed by the hardware cipher engine and are ready for 871 * transmission. 872 */ 873static void 874rt2560_encryption_intr(struct rt2560_softc *sc) 875{ 876 struct rt2560_tx_desc *desc; 877 int hw; 878 879 /* retrieve last descriptor index processed by cipher engine */ 880 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 881 hw /= RT2560_TX_DESC_SIZE; 882 883 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 884 BUS_DMASYNC_POSTREAD); 885 886 while (sc->txq.next_encrypt != hw) { 887 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 888 printf("hw encrypt %d, cur_encrypt %d\n", hw, 889 sc->txq.cur_encrypt); 890 break; 891 } 892 893 desc = &sc->txq.desc[sc->txq.next_encrypt]; 894 895 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 896 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 897 break; 898 899 /* for TKIP, swap eiv field to fix a bug in ASIC */ 900 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 901 RT2560_TX_CIPHER_TKIP) 902 desc->eiv = bswap32(desc->eiv); 903 904 /* mark the frame ready for transmission */ 905 desc->flags |= htole32(RT2560_TX_VALID); 906 desc->flags |= htole32(RT2560_TX_BUSY); 907 908 DPRINTFN(sc, 15, "encryption done idx=%u\n", 909 sc->txq.next_encrypt); 910 911 sc->txq.next_encrypt = 912 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 913 } 914 915 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 916 BUS_DMASYNC_PREWRITE); 917 918 /* kick Tx */ 919 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 920} 921 922static void 923rt2560_tx_intr(struct rt2560_softc *sc) 924{ 925 struct ifnet *ifp = sc->sc_ifp; 926 struct rt2560_tx_desc *desc; 927 struct rt2560_tx_data *data; 928 struct mbuf *m; 929 uint32_t flags; 930 int retrycnt; 931 struct ieee80211vap *vap; 932 struct ieee80211_node *ni; 933 934 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 935 BUS_DMASYNC_POSTREAD); 936 937 for (;;) { 938 desc = &sc->txq.desc[sc->txq.next]; 939 data = &sc->txq.data[sc->txq.next]; 940 941 flags = le32toh(desc->flags); 942 if ((flags & RT2560_TX_BUSY) || 943 (flags & RT2560_TX_CIPHER_BUSY) || 944 !(flags & RT2560_TX_VALID)) 945 break; 946 947 m = data->m; 948 ni = data->ni; 949 vap = ni->ni_vap; 950 951 switch (flags & RT2560_TX_RESULT_MASK) { 952 case RT2560_TX_SUCCESS: 953 retrycnt = 0; 954 955 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 956 if (data->rix != IEEE80211_FIXED_RATE_NONE) 957 ieee80211_ratectl_tx_complete(vap, ni, 958 IEEE80211_RATECTL_TX_SUCCESS, 959 &retrycnt, NULL); 960 ifp->if_opackets++; 961 break; 962 963 case RT2560_TX_SUCCESS_RETRY: 964 retrycnt = RT2560_TX_RETRYCNT(flags); 965 966 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 967 retrycnt); 968 if (data->rix != IEEE80211_FIXED_RATE_NONE) 969 ieee80211_ratectl_tx_complete(vap, ni, 970 IEEE80211_RATECTL_TX_SUCCESS, 971 &retrycnt, NULL); 972 ifp->if_opackets++; 973 break; 974 975 case RT2560_TX_FAIL_RETRY: 976 retrycnt = RT2560_TX_RETRYCNT(flags); 977 978 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 979 retrycnt); 980 if (data->rix != IEEE80211_FIXED_RATE_NONE) 981 ieee80211_ratectl_tx_complete(vap, ni, 982 IEEE80211_RATECTL_TX_FAILURE, 983 &retrycnt, NULL); 984 ifp->if_oerrors++; 985 break; 986 987 case RT2560_TX_FAIL_INVALID: 988 case RT2560_TX_FAIL_OTHER: 989 default: 990 device_printf(sc->sc_dev, "sending data frame failed " 991 "0x%08x\n", flags); 992 ifp->if_oerrors++; 993 } 994 995 bus_dmamap_sync(sc->txq.data_dmat, data->map, 996 BUS_DMASYNC_POSTWRITE); 997 bus_dmamap_unload(sc->txq.data_dmat, data->map); 998 m_freem(m); 999 data->m = NULL; 1000 ieee80211_free_node(data->ni); 1001 data->ni = NULL; 1002 1003 /* descriptor is no longer valid */ 1004 desc->flags &= ~htole32(RT2560_TX_VALID); 1005 1006 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1007 1008 sc->txq.queued--; 1009 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1010 } 1011 1012 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1013 BUS_DMASYNC_PREWRITE); 1014 1015 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1016 sc->sc_tx_timer = 0; 1017 1018 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1019 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1020 if ((sc->sc_flags & 1021 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1022 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1023 rt2560_start_locked(ifp); 1024 } 1025} 1026 1027static void 1028rt2560_prio_intr(struct rt2560_softc *sc) 1029{ 1030 struct ifnet *ifp = sc->sc_ifp; 1031 struct rt2560_tx_desc *desc; 1032 struct rt2560_tx_data *data; 1033 struct ieee80211_node *ni; 1034 struct mbuf *m; 1035 int flags; 1036 1037 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1038 BUS_DMASYNC_POSTREAD); 1039 1040 for (;;) { 1041 desc = &sc->prioq.desc[sc->prioq.next]; 1042 data = &sc->prioq.data[sc->prioq.next]; 1043 1044 flags = le32toh(desc->flags); 1045 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1046 break; 1047 1048 switch (flags & RT2560_TX_RESULT_MASK) { 1049 case RT2560_TX_SUCCESS: 1050 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1051 break; 1052 1053 case RT2560_TX_SUCCESS_RETRY: 1054 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1055 (flags >> 5) & 0x7); 1056 break; 1057 1058 case RT2560_TX_FAIL_RETRY: 1059 DPRINTFN(sc, 9, "%s\n", 1060 "sending mgt frame failed (too much retries)"); 1061 break; 1062 1063 case RT2560_TX_FAIL_INVALID: 1064 case RT2560_TX_FAIL_OTHER: 1065 default: 1066 device_printf(sc->sc_dev, "sending mgt frame failed " 1067 "0x%08x\n", flags); 1068 break; 1069 } 1070 1071 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1072 BUS_DMASYNC_POSTWRITE); 1073 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1074 1075 m = data->m; 1076 data->m = NULL; 1077 ni = data->ni; 1078 data->ni = NULL; 1079 1080 /* descriptor is no longer valid */ 1081 desc->flags &= ~htole32(RT2560_TX_VALID); 1082 1083 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1084 1085 sc->prioq.queued--; 1086 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1087 1088 if (m->m_flags & M_TXCB) 1089 ieee80211_process_callback(ni, m, 1090 (flags & RT2560_TX_RESULT_MASK) &~ 1091 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1092 m_freem(m); 1093 ieee80211_free_node(ni); 1094 } 1095 1096 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1097 BUS_DMASYNC_PREWRITE); 1098 1099 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1100 sc->sc_tx_timer = 0; 1101 1102 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1103 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1104 if ((sc->sc_flags & 1105 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1106 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1107 rt2560_start_locked(ifp); 1108 } 1109} 1110 1111/* 1112 * Some frames were processed by the hardware cipher engine and are ready for 1113 * handoff to the IEEE802.11 layer. 1114 */ 1115static void 1116rt2560_decryption_intr(struct rt2560_softc *sc) 1117{ 1118 struct ifnet *ifp = sc->sc_ifp; 1119 struct ieee80211com *ic = ifp->if_l2com; 1120 struct rt2560_rx_desc *desc; 1121 struct rt2560_rx_data *data; 1122 bus_addr_t physaddr; 1123 struct ieee80211_frame *wh; 1124 struct ieee80211_node *ni; 1125 struct mbuf *mnew, *m; 1126 int hw, error; 1127 int8_t rssi, nf; 1128 1129 /* retrieve last decriptor index processed by cipher engine */ 1130 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1131 hw /= RT2560_RX_DESC_SIZE; 1132 1133 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1134 BUS_DMASYNC_POSTREAD); 1135 1136 for (; sc->rxq.cur_decrypt != hw;) { 1137 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1138 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1139 1140 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1141 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1142 break; 1143 1144 if (data->drop) { 1145 ifp->if_ierrors++; 1146 goto skip; 1147 } 1148 1149 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1150 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1151 ifp->if_ierrors++; 1152 goto skip; 1153 } 1154 1155 /* 1156 * Try to allocate a new mbuf for this ring element and load it 1157 * before processing the current mbuf. If the ring element 1158 * cannot be loaded, drop the received packet and reuse the old 1159 * mbuf. In the unlikely case that the old mbuf can't be 1160 * reloaded either, explicitly panic. 1161 */ 1162 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1163 if (mnew == NULL) { 1164 ifp->if_ierrors++; 1165 goto skip; 1166 } 1167 1168 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1169 BUS_DMASYNC_POSTREAD); 1170 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1171 1172 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1173 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1174 &physaddr, 0); 1175 if (error != 0) { 1176 m_freem(mnew); 1177 1178 /* try to reload the old mbuf */ 1179 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1180 mtod(data->m, void *), MCLBYTES, 1181 rt2560_dma_map_addr, &physaddr, 0); 1182 if (error != 0) { 1183 /* very unlikely that it will fail... */ 1184 panic("%s: could not load old rx mbuf", 1185 device_get_name(sc->sc_dev)); 1186 } 1187 ifp->if_ierrors++; 1188 goto skip; 1189 } 1190 1191 /* 1192 * New mbuf successfully loaded, update Rx ring and continue 1193 * processing. 1194 */ 1195 m = data->m; 1196 data->m = mnew; 1197 desc->physaddr = htole32(physaddr); 1198 1199 /* finalize mbuf */ 1200 m->m_pkthdr.rcvif = ifp; 1201 m->m_pkthdr.len = m->m_len = 1202 (le32toh(desc->flags) >> 16) & 0xfff; 1203 1204 rssi = RT2560_RSSI(sc, desc->rssi); 1205 nf = RT2560_NOISE_FLOOR; 1206 if (ieee80211_radiotap_active(ic)) { 1207 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1208 uint32_t tsf_lo, tsf_hi; 1209 1210 /* get timestamp (low and high 32 bits) */ 1211 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1212 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1213 1214 tap->wr_tsf = 1215 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1216 tap->wr_flags = 0; 1217 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1218 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1219 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1220 tap->wr_antenna = sc->rx_ant; 1221 tap->wr_antsignal = nf + rssi; 1222 tap->wr_antnoise = nf; 1223 } 1224 1225 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1226 RAL_UNLOCK(sc); 1227 wh = mtod(m, struct ieee80211_frame *); 1228 ni = ieee80211_find_rxnode(ic, 1229 (struct ieee80211_frame_min *)wh); 1230 if (ni != NULL) { 1231 (void) ieee80211_input(ni, m, rssi, nf); 1232 ieee80211_free_node(ni); 1233 } else 1234 (void) ieee80211_input_all(ic, m, rssi, nf); 1235 1236 RAL_LOCK(sc); 1237 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1238skip: desc->flags = htole32(RT2560_RX_BUSY); 1239 1240 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1241 1242 sc->rxq.cur_decrypt = 1243 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1244 } 1245 1246 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1247 BUS_DMASYNC_PREWRITE); 1248} 1249 1250/* 1251 * Some frames were received. Pass them to the hardware cipher engine before 1252 * sending them to the 802.11 layer. 1253 */ 1254static void 1255rt2560_rx_intr(struct rt2560_softc *sc) 1256{ 1257 struct rt2560_rx_desc *desc; 1258 struct rt2560_rx_data *data; 1259 1260 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1261 BUS_DMASYNC_POSTREAD); 1262 1263 for (;;) { 1264 desc = &sc->rxq.desc[sc->rxq.cur]; 1265 data = &sc->rxq.data[sc->rxq.cur]; 1266 1267 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1268 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1269 break; 1270 1271 data->drop = 0; 1272 1273 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1274 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1275 /* 1276 * This should not happen since we did not request 1277 * to receive those frames when we filled RXCSR0. 1278 */ 1279 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1280 le32toh(desc->flags)); 1281 data->drop = 1; 1282 } 1283 1284 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1285 DPRINTFN(sc, 5, "%s\n", "bad length"); 1286 data->drop = 1; 1287 } 1288 1289 /* mark the frame for decryption */ 1290 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1291 1292 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1293 1294 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1295 } 1296 1297 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1298 BUS_DMASYNC_PREWRITE); 1299 1300 /* kick decrypt */ 1301 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1302} 1303 1304static void 1305rt2560_beacon_update(struct ieee80211vap *vap, int item) 1306{ 1307 struct rt2560_vap *rvp = RT2560_VAP(vap); 1308 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1309 1310 setbit(bo->bo_flags, item); 1311} 1312 1313/* 1314 * This function is called periodically in IBSS mode when a new beacon must be 1315 * sent out. 1316 */ 1317static void 1318rt2560_beacon_expire(struct rt2560_softc *sc) 1319{ 1320 struct ifnet *ifp = sc->sc_ifp; 1321 struct ieee80211com *ic = ifp->if_l2com; 1322 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1323 struct rt2560_vap *rvp = RT2560_VAP(vap); 1324 struct rt2560_tx_data *data; 1325 1326 if (ic->ic_opmode != IEEE80211_M_IBSS && 1327 ic->ic_opmode != IEEE80211_M_HOSTAP && 1328 ic->ic_opmode != IEEE80211_M_MBSS) 1329 return; 1330 1331 data = &sc->bcnq.data[sc->bcnq.next]; 1332 /* 1333 * Don't send beacon if bsschan isn't set 1334 */ 1335 if (data->ni == NULL) 1336 return; 1337 1338 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1339 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1340 1341 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1342 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1343 1344 rt2560_tx_bcn(sc, data->m, data->ni); 1345 1346 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1347 1348 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1349} 1350 1351/* ARGSUSED */ 1352static void 1353rt2560_wakeup_expire(struct rt2560_softc *sc) 1354{ 1355 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1356} 1357 1358void 1359rt2560_intr(void *arg) 1360{ 1361 struct rt2560_softc *sc = arg; 1362 struct ifnet *ifp = sc->sc_ifp; 1363 uint32_t r; 1364 1365 RAL_LOCK(sc); 1366 1367 /* disable interrupts */ 1368 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1369 1370 /* don't re-enable interrupts if we're shutting down */ 1371 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1372 RAL_UNLOCK(sc); 1373 return; 1374 } 1375 1376 r = RAL_READ(sc, RT2560_CSR7); 1377 RAL_WRITE(sc, RT2560_CSR7, r); 1378 1379 if (r & RT2560_BEACON_EXPIRE) 1380 rt2560_beacon_expire(sc); 1381 1382 if (r & RT2560_WAKEUP_EXPIRE) 1383 rt2560_wakeup_expire(sc); 1384 1385 if (r & RT2560_ENCRYPTION_DONE) 1386 rt2560_encryption_intr(sc); 1387 1388 if (r & RT2560_TX_DONE) 1389 rt2560_tx_intr(sc); 1390 1391 if (r & RT2560_PRIO_DONE) 1392 rt2560_prio_intr(sc); 1393 1394 if (r & RT2560_DECRYPTION_DONE) 1395 rt2560_decryption_intr(sc); 1396 1397 if (r & RT2560_RX_DONE) { 1398 rt2560_rx_intr(sc); 1399 rt2560_encryption_intr(sc); 1400 } 1401 1402 /* re-enable interrupts */ 1403 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1404 1405 RAL_UNLOCK(sc); 1406} 1407 1408#define RAL_SIFS 10 /* us */ 1409 1410#define RT2560_TXRX_TURNAROUND 10 /* us */ 1411 1412static uint8_t 1413rt2560_plcp_signal(int rate) 1414{ 1415 switch (rate) { 1416 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1417 case 12: return 0xb; 1418 case 18: return 0xf; 1419 case 24: return 0xa; 1420 case 36: return 0xe; 1421 case 48: return 0x9; 1422 case 72: return 0xd; 1423 case 96: return 0x8; 1424 case 108: return 0xc; 1425 1426 /* CCK rates (NB: not IEEE std, device-specific) */ 1427 case 2: return 0x0; 1428 case 4: return 0x1; 1429 case 11: return 0x2; 1430 case 22: return 0x3; 1431 } 1432 return 0xff; /* XXX unsupported/unknown rate */ 1433} 1434 1435static void 1436rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1437 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1438{ 1439 struct ifnet *ifp = sc->sc_ifp; 1440 struct ieee80211com *ic = ifp->if_l2com; 1441 uint16_t plcp_length; 1442 int remainder; 1443 1444 desc->flags = htole32(flags); 1445 desc->flags |= htole32(len << 16); 1446 1447 desc->physaddr = htole32(physaddr); 1448 desc->wme = htole16( 1449 RT2560_AIFSN(2) | 1450 RT2560_LOGCWMIN(3) | 1451 RT2560_LOGCWMAX(8)); 1452 1453 /* setup PLCP fields */ 1454 desc->plcp_signal = rt2560_plcp_signal(rate); 1455 desc->plcp_service = 4; 1456 1457 len += IEEE80211_CRC_LEN; 1458 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1459 desc->flags |= htole32(RT2560_TX_OFDM); 1460 1461 plcp_length = len & 0xfff; 1462 desc->plcp_length_hi = plcp_length >> 6; 1463 desc->plcp_length_lo = plcp_length & 0x3f; 1464 } else { 1465 plcp_length = (16 * len + rate - 1) / rate; 1466 if (rate == 22) { 1467 remainder = (16 * len) % 22; 1468 if (remainder != 0 && remainder < 7) 1469 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1470 } 1471 desc->plcp_length_hi = plcp_length >> 8; 1472 desc->plcp_length_lo = plcp_length & 0xff; 1473 1474 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1475 desc->plcp_signal |= 0x08; 1476 } 1477 1478 if (!encrypt) 1479 desc->flags |= htole32(RT2560_TX_VALID); 1480 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1481 : htole32(RT2560_TX_BUSY); 1482} 1483 1484static int 1485rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1486 struct ieee80211_node *ni) 1487{ 1488 struct ieee80211vap *vap = ni->ni_vap; 1489 struct rt2560_tx_desc *desc; 1490 struct rt2560_tx_data *data; 1491 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1492 int nsegs, rate, error; 1493 1494 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1495 data = &sc->bcnq.data[sc->bcnq.cur]; 1496 1497 /* XXX maybe a separate beacon rate? */ 1498 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1499 1500 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1501 segs, &nsegs, BUS_DMA_NOWAIT); 1502 if (error != 0) { 1503 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1504 error); 1505 m_freem(m0); 1506 return error; 1507 } 1508 1509 if (ieee80211_radiotap_active_vap(vap)) { 1510 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1511 1512 tap->wt_flags = 0; 1513 tap->wt_rate = rate; 1514 tap->wt_antenna = sc->tx_ant; 1515 1516 ieee80211_radiotap_tx(vap, m0); 1517 } 1518 1519 data->m = m0; 1520 data->ni = ni; 1521 1522 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1523 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1524 1525 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1526 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1527 1528 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1529 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1530 BUS_DMASYNC_PREWRITE); 1531 1532 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1533 1534 return 0; 1535} 1536 1537static int 1538rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1539 struct ieee80211_node *ni) 1540{ 1541 struct ieee80211vap *vap = ni->ni_vap; 1542 struct ieee80211com *ic = ni->ni_ic; 1543 struct rt2560_tx_desc *desc; 1544 struct rt2560_tx_data *data; 1545 struct ieee80211_frame *wh; 1546 struct ieee80211_key *k; 1547 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1548 uint16_t dur; 1549 uint32_t flags = 0; 1550 int nsegs, rate, error; 1551 1552 desc = &sc->prioq.desc[sc->prioq.cur]; 1553 data = &sc->prioq.data[sc->prioq.cur]; 1554 1555 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1556 1557 wh = mtod(m0, struct ieee80211_frame *); 1558 1559 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1560 k = ieee80211_crypto_encap(ni, m0); 1561 if (k == NULL) { 1562 m_freem(m0); 1563 return ENOBUFS; 1564 } 1565 } 1566 1567 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1568 segs, &nsegs, 0); 1569 if (error != 0) { 1570 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1571 error); 1572 m_freem(m0); 1573 return error; 1574 } 1575 1576 if (ieee80211_radiotap_active_vap(vap)) { 1577 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1578 1579 tap->wt_flags = 0; 1580 tap->wt_rate = rate; 1581 tap->wt_antenna = sc->tx_ant; 1582 1583 ieee80211_radiotap_tx(vap, m0); 1584 } 1585 1586 data->m = m0; 1587 data->ni = ni; 1588 /* management frames are not taken into account for amrr */ 1589 data->rix = IEEE80211_FIXED_RATE_NONE; 1590 1591 wh = mtod(m0, struct ieee80211_frame *); 1592 1593 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1594 flags |= RT2560_TX_ACK; 1595 1596 dur = ieee80211_ack_duration(ic->ic_rt, 1597 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1598 *(uint16_t *)wh->i_dur = htole16(dur); 1599 1600 /* tell hardware to add timestamp for probe responses */ 1601 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1602 IEEE80211_FC0_TYPE_MGT && 1603 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1604 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1605 flags |= RT2560_TX_TIMESTAMP; 1606 } 1607 1608 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1609 segs->ds_addr); 1610 1611 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1612 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1613 BUS_DMASYNC_PREWRITE); 1614 1615 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1616 m0->m_pkthdr.len, sc->prioq.cur, rate); 1617 1618 /* kick prio */ 1619 sc->prioq.queued++; 1620 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1621 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1622 1623 return 0; 1624} 1625 1626static int 1627rt2560_sendprot(struct rt2560_softc *sc, 1628 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1629{ 1630 struct ieee80211com *ic = ni->ni_ic; 1631 const struct ieee80211_frame *wh; 1632 struct rt2560_tx_desc *desc; 1633 struct rt2560_tx_data *data; 1634 struct mbuf *mprot; 1635 int protrate, ackrate, pktlen, flags, isshort, error; 1636 uint16_t dur; 1637 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1638 int nsegs; 1639 1640 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1641 ("protection %d", prot)); 1642 1643 wh = mtod(m, const struct ieee80211_frame *); 1644 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1645 1646 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1647 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1648 1649 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1650 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1651 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1652 flags = RT2560_TX_MORE_FRAG; 1653 if (prot == IEEE80211_PROT_RTSCTS) { 1654 /* NB: CTS is the same size as an ACK */ 1655 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1656 flags |= RT2560_TX_ACK; 1657 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1658 } else { 1659 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1660 } 1661 if (mprot == NULL) { 1662 /* XXX stat + msg */ 1663 return ENOBUFS; 1664 } 1665 1666 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1667 data = &sc->txq.data[sc->txq.cur_encrypt]; 1668 1669 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1670 mprot, segs, &nsegs, 0); 1671 if (error != 0) { 1672 device_printf(sc->sc_dev, 1673 "could not map mbuf (error %d)\n", error); 1674 m_freem(mprot); 1675 return error; 1676 } 1677 1678 data->m = mprot; 1679 data->ni = ieee80211_ref_node(ni); 1680 /* ctl frames are not taken into account for amrr */ 1681 data->rix = IEEE80211_FIXED_RATE_NONE; 1682 1683 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1684 segs->ds_addr); 1685 1686 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1687 BUS_DMASYNC_PREWRITE); 1688 1689 sc->txq.queued++; 1690 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1691 1692 return 0; 1693} 1694 1695static int 1696rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1697 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1698{ 1699 struct ieee80211vap *vap = ni->ni_vap; 1700 struct ieee80211com *ic = ni->ni_ic; 1701 struct rt2560_tx_desc *desc; 1702 struct rt2560_tx_data *data; 1703 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1704 uint32_t flags; 1705 int nsegs, rate, error; 1706 1707 desc = &sc->prioq.desc[sc->prioq.cur]; 1708 data = &sc->prioq.data[sc->prioq.cur]; 1709 1710 rate = params->ibp_rate0; 1711 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1712 /* XXX fall back to mcast/mgmt rate? */ 1713 m_freem(m0); 1714 return EINVAL; 1715 } 1716 1717 flags = 0; 1718 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1719 flags |= RT2560_TX_ACK; 1720 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1721 error = rt2560_sendprot(sc, m0, ni, 1722 params->ibp_flags & IEEE80211_BPF_RTS ? 1723 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1724 rate); 1725 if (error) { 1726 m_freem(m0); 1727 return error; 1728 } 1729 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1730 } 1731 1732 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1733 segs, &nsegs, 0); 1734 if (error != 0) { 1735 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1736 error); 1737 m_freem(m0); 1738 return error; 1739 } 1740 1741 if (ieee80211_radiotap_active_vap(vap)) { 1742 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1743 1744 tap->wt_flags = 0; 1745 tap->wt_rate = rate; 1746 tap->wt_antenna = sc->tx_ant; 1747 1748 ieee80211_radiotap_tx(ni->ni_vap, m0); 1749 } 1750 1751 data->m = m0; 1752 data->ni = ni; 1753 1754 /* XXX need to setup descriptor ourself */ 1755 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1756 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1757 segs->ds_addr); 1758 1759 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1760 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1761 BUS_DMASYNC_PREWRITE); 1762 1763 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1764 m0->m_pkthdr.len, sc->prioq.cur, rate); 1765 1766 /* kick prio */ 1767 sc->prioq.queued++; 1768 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1769 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1770 1771 return 0; 1772} 1773 1774static int 1775rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1776 struct ieee80211_node *ni) 1777{ 1778 struct ieee80211vap *vap = ni->ni_vap; 1779 struct ieee80211com *ic = ni->ni_ic; 1780 struct rt2560_tx_desc *desc; 1781 struct rt2560_tx_data *data; 1782 struct ieee80211_frame *wh; 1783 const struct ieee80211_txparam *tp; 1784 struct ieee80211_key *k; 1785 struct mbuf *mnew; 1786 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1787 uint16_t dur; 1788 uint32_t flags; 1789 int nsegs, rate, error; 1790 1791 wh = mtod(m0, struct ieee80211_frame *); 1792 1793 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1794 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1795 rate = tp->mcastrate; 1796 } else if (m0->m_flags & M_EAPOL) { 1797 rate = tp->mgmtrate; 1798 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1799 rate = tp->ucastrate; 1800 } else { 1801 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1802 rate = ni->ni_txrate; 1803 } 1804 1805 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1806 k = ieee80211_crypto_encap(ni, m0); 1807 if (k == NULL) { 1808 m_freem(m0); 1809 return ENOBUFS; 1810 } 1811 1812 /* packet header may have moved, reset our local pointer */ 1813 wh = mtod(m0, struct ieee80211_frame *); 1814 } 1815 1816 flags = 0; 1817 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1818 int prot = IEEE80211_PROT_NONE; 1819 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1820 prot = IEEE80211_PROT_RTSCTS; 1821 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1822 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1823 prot = ic->ic_protmode; 1824 if (prot != IEEE80211_PROT_NONE) { 1825 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1826 if (error) { 1827 m_freem(m0); 1828 return error; 1829 } 1830 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1831 } 1832 } 1833 1834 data = &sc->txq.data[sc->txq.cur_encrypt]; 1835 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1836 1837 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1838 segs, &nsegs, 0); 1839 if (error != 0 && error != EFBIG) { 1840 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1841 error); 1842 m_freem(m0); 1843 return error; 1844 } 1845 if (error != 0) { 1846 mnew = m_defrag(m0, M_DONTWAIT); 1847 if (mnew == NULL) { 1848 device_printf(sc->sc_dev, 1849 "could not defragment mbuf\n"); 1850 m_freem(m0); 1851 return ENOBUFS; 1852 } 1853 m0 = mnew; 1854 1855 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1856 m0, segs, &nsegs, 0); 1857 if (error != 0) { 1858 device_printf(sc->sc_dev, 1859 "could not map mbuf (error %d)\n", error); 1860 m_freem(m0); 1861 return error; 1862 } 1863 1864 /* packet header may have moved, reset our local pointer */ 1865 wh = mtod(m0, struct ieee80211_frame *); 1866 } 1867 1868 if (ieee80211_radiotap_active_vap(vap)) { 1869 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1870 1871 tap->wt_flags = 0; 1872 tap->wt_rate = rate; 1873 tap->wt_antenna = sc->tx_ant; 1874 1875 ieee80211_radiotap_tx(vap, m0); 1876 } 1877 1878 data->m = m0; 1879 data->ni = ni; 1880 1881 /* remember link conditions for rate adaptation algorithm */ 1882 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1883 data->rix = ni->ni_txrate; 1884 /* XXX probably need last rssi value and not avg */ 1885 data->rssi = ic->ic_node_getrssi(ni); 1886 } else 1887 data->rix = IEEE80211_FIXED_RATE_NONE; 1888 1889 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1890 flags |= RT2560_TX_ACK; 1891 1892 dur = ieee80211_ack_duration(ic->ic_rt, 1893 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1894 *(uint16_t *)wh->i_dur = htole16(dur); 1895 } 1896 1897 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1898 segs->ds_addr); 1899 1900 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1901 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1902 BUS_DMASYNC_PREWRITE); 1903 1904 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1905 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1906 1907 /* kick encrypt */ 1908 sc->txq.queued++; 1909 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1910 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1911 1912 return 0; 1913} 1914 1915static void 1916rt2560_start_locked(struct ifnet *ifp) 1917{ 1918 struct rt2560_softc *sc = ifp->if_softc; 1919 struct mbuf *m; 1920 struct ieee80211_node *ni; 1921 1922 RAL_LOCK_ASSERT(sc); 1923 1924 for (;;) { 1925 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1926 if (m == NULL) 1927 break; 1928 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1929 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1930 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1931 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1932 break; 1933 } 1934 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1935 if (rt2560_tx_data(sc, m, ni) != 0) { 1936 ieee80211_free_node(ni); 1937 ifp->if_oerrors++; 1938 break; 1939 } 1940 1941 sc->sc_tx_timer = 5; 1942 } 1943} 1944 1945static void 1946rt2560_start(struct ifnet *ifp) 1947{ 1948 struct rt2560_softc *sc = ifp->if_softc; 1949 1950 RAL_LOCK(sc); 1951 rt2560_start_locked(ifp); 1952 RAL_UNLOCK(sc); 1953} 1954 1955static void 1956rt2560_watchdog(void *arg) 1957{ 1958 struct rt2560_softc *sc = arg; 1959 struct ifnet *ifp = sc->sc_ifp; 1960 1961 RAL_LOCK_ASSERT(sc); 1962 1963 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1964 1965 if (sc->sc_invalid) /* card ejected */ 1966 return; 1967 1968 rt2560_encryption_intr(sc); 1969 rt2560_tx_intr(sc); 1970 1971 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1972 if_printf(ifp, "device timeout\n"); 1973 rt2560_init_locked(sc); 1974 ifp->if_oerrors++; 1975 /* NB: callout is reset in rt2560_init() */ 1976 return; 1977 } 1978 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1979} 1980 1981static int 1982rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1983{ 1984 struct rt2560_softc *sc = ifp->if_softc; 1985 struct ieee80211com *ic = ifp->if_l2com; 1986 struct ifreq *ifr = (struct ifreq *) data; 1987 int error = 0, startall = 0; 1988 1989 switch (cmd) { 1990 case SIOCSIFFLAGS: 1991 RAL_LOCK(sc); 1992 if (ifp->if_flags & IFF_UP) { 1993 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1994 rt2560_init_locked(sc); 1995 startall = 1; 1996 } else 1997 rt2560_update_promisc(ifp); 1998 } else { 1999 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2000 rt2560_stop_locked(sc); 2001 } 2002 RAL_UNLOCK(sc); 2003 if (startall) 2004 ieee80211_start_all(ic); 2005 break; 2006 case SIOCGIFMEDIA: 2007 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2008 break; 2009 case SIOCGIFADDR: 2010 error = ether_ioctl(ifp, cmd, data); 2011 break; 2012 default: 2013 error = EINVAL; 2014 break; 2015 } 2016 return error; 2017} 2018 2019static void 2020rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2021{ 2022 uint32_t tmp; 2023 int ntries; 2024 2025 for (ntries = 0; ntries < 100; ntries++) { 2026 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2027 break; 2028 DELAY(1); 2029 } 2030 if (ntries == 100) { 2031 device_printf(sc->sc_dev, "could not write to BBP\n"); 2032 return; 2033 } 2034 2035 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2036 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2037 2038 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2039} 2040 2041static uint8_t 2042rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2043{ 2044 uint32_t val; 2045 int ntries; 2046 2047 for (ntries = 0; ntries < 100; ntries++) { 2048 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2049 break; 2050 DELAY(1); 2051 } 2052 if (ntries == 100) { 2053 device_printf(sc->sc_dev, "could not read from BBP\n"); 2054 return 0; 2055 } 2056 2057 val = RT2560_BBP_BUSY | reg << 8; 2058 RAL_WRITE(sc, RT2560_BBPCSR, val); 2059 2060 for (ntries = 0; ntries < 100; ntries++) { 2061 val = RAL_READ(sc, RT2560_BBPCSR); 2062 if (!(val & RT2560_BBP_BUSY)) 2063 return val & 0xff; 2064 DELAY(1); 2065 } 2066 2067 device_printf(sc->sc_dev, "could not read from BBP\n"); 2068 return 0; 2069} 2070 2071static void 2072rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2073{ 2074 uint32_t tmp; 2075 int ntries; 2076 2077 for (ntries = 0; ntries < 100; ntries++) { 2078 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2079 break; 2080 DELAY(1); 2081 } 2082 if (ntries == 100) { 2083 device_printf(sc->sc_dev, "could not write to RF\n"); 2084 return; 2085 } 2086 2087 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2088 (reg & 0x3); 2089 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2090 2091 /* remember last written value in sc */ 2092 sc->rf_regs[reg] = val; 2093 2094 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2095} 2096 2097static void 2098rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2099{ 2100 struct ifnet *ifp = sc->sc_ifp; 2101 struct ieee80211com *ic = ifp->if_l2com; 2102 uint8_t power, tmp; 2103 u_int i, chan; 2104 2105 chan = ieee80211_chan2ieee(ic, c); 2106 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2107 2108 if (IEEE80211_IS_CHAN_2GHZ(c)) 2109 power = min(sc->txpow[chan - 1], 31); 2110 else 2111 power = 31; 2112 2113 /* adjust txpower using ifconfig settings */ 2114 power -= (100 - ic->ic_txpowlimit) / 8; 2115 2116 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2117 2118 switch (sc->rf_rev) { 2119 case RT2560_RF_2522: 2120 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2121 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2122 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2123 break; 2124 2125 case RT2560_RF_2523: 2126 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2127 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2128 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2129 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2130 break; 2131 2132 case RT2560_RF_2524: 2133 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2134 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2135 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2136 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2137 break; 2138 2139 case RT2560_RF_2525: 2140 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2141 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2142 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2143 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2144 2145 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2146 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2147 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2148 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2149 break; 2150 2151 case RT2560_RF_2525E: 2152 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2153 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2154 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2155 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2156 break; 2157 2158 case RT2560_RF_2526: 2159 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2160 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2161 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2162 2163 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2164 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2165 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2166 break; 2167 2168 /* dual-band RF */ 2169 case RT2560_RF_5222: 2170 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2171 2172 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2173 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2174 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2175 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2176 break; 2177 default: 2178 printf("unknown ral rev=%d\n", sc->rf_rev); 2179 } 2180 2181 /* XXX */ 2182 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2183 /* set Japan filter bit for channel 14 */ 2184 tmp = rt2560_bbp_read(sc, 70); 2185 2186 tmp &= ~RT2560_JAPAN_FILTER; 2187 if (chan == 14) 2188 tmp |= RT2560_JAPAN_FILTER; 2189 2190 rt2560_bbp_write(sc, 70, tmp); 2191 2192 /* clear CRC errors */ 2193 RAL_READ(sc, RT2560_CNT0); 2194 } 2195} 2196 2197static void 2198rt2560_set_channel(struct ieee80211com *ic) 2199{ 2200 struct ifnet *ifp = ic->ic_ifp; 2201 struct rt2560_softc *sc = ifp->if_softc; 2202 2203 RAL_LOCK(sc); 2204 rt2560_set_chan(sc, ic->ic_curchan); 2205 RAL_UNLOCK(sc); 2206 2207} 2208 2209#if 0 2210/* 2211 * Disable RF auto-tuning. 2212 */ 2213static void 2214rt2560_disable_rf_tune(struct rt2560_softc *sc) 2215{ 2216 uint32_t tmp; 2217 2218 if (sc->rf_rev != RT2560_RF_2523) { 2219 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2220 rt2560_rf_write(sc, RAL_RF1, tmp); 2221 } 2222 2223 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2224 rt2560_rf_write(sc, RAL_RF3, tmp); 2225 2226 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2227} 2228#endif 2229 2230/* 2231 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2232 * synchronization. 2233 */ 2234static void 2235rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2236{ 2237 struct ifnet *ifp = sc->sc_ifp; 2238 struct ieee80211com *ic = ifp->if_l2com; 2239 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2240 uint16_t logcwmin, preload; 2241 uint32_t tmp; 2242 2243 /* first, disable TSF synchronization */ 2244 RAL_WRITE(sc, RT2560_CSR14, 0); 2245 2246 tmp = 16 * vap->iv_bss->ni_intval; 2247 RAL_WRITE(sc, RT2560_CSR12, tmp); 2248 2249 RAL_WRITE(sc, RT2560_CSR13, 0); 2250 2251 logcwmin = 5; 2252 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2253 tmp = logcwmin << 16 | preload; 2254 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2255 2256 /* finally, enable TSF synchronization */ 2257 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2258 if (ic->ic_opmode == IEEE80211_M_STA) 2259 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2260 else 2261 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2262 RT2560_ENABLE_BEACON_GENERATOR; 2263 RAL_WRITE(sc, RT2560_CSR14, tmp); 2264 2265 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2266} 2267 2268static void 2269rt2560_enable_tsf(struct rt2560_softc *sc) 2270{ 2271 RAL_WRITE(sc, RT2560_CSR14, 0); 2272 RAL_WRITE(sc, RT2560_CSR14, 2273 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2274} 2275 2276static void 2277rt2560_update_plcp(struct rt2560_softc *sc) 2278{ 2279 struct ifnet *ifp = sc->sc_ifp; 2280 struct ieee80211com *ic = ifp->if_l2com; 2281 2282 /* no short preamble for 1Mbps */ 2283 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2284 2285 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2286 /* values taken from the reference driver */ 2287 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2288 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2289 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2290 } else { 2291 /* same values as above or'ed 0x8 */ 2292 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2293 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2294 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2295 } 2296 2297 DPRINTF(sc, "updating PLCP for %s preamble\n", 2298 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2299} 2300 2301/* 2302 * This function can be called by ieee80211_set_shortslottime(). Refer to 2303 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2304 */ 2305static void 2306rt2560_update_slot(struct ifnet *ifp) 2307{ 2308 struct rt2560_softc *sc = ifp->if_softc; 2309 struct ieee80211com *ic = ifp->if_l2com; 2310 uint8_t slottime; 2311 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2312 uint32_t tmp; 2313 2314#ifndef FORCE_SLOTTIME 2315 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2316#else 2317 /* 2318 * Setting slot time according to "short slot time" capability 2319 * in beacon/probe_resp seems to cause problem to acknowledge 2320 * certain AP's data frames transimitted at CCK/DS rates: the 2321 * problematic AP keeps retransmitting data frames, probably 2322 * because MAC level acks are not received by hardware. 2323 * So we cheat a little bit here by claiming we are capable of 2324 * "short slot time" but setting hardware slot time to the normal 2325 * slot time. ral(4) does not seem to have trouble to receive 2326 * frames transmitted using short slot time even if hardware 2327 * slot time is set to normal slot time. If we didn't use this 2328 * trick, we would have to claim that short slot time is not 2329 * supported; this would give relative poor RX performance 2330 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2331 * slot time. 2332 */ 2333 slottime = 20; 2334#endif 2335 2336 /* update the MAC slot boundaries */ 2337 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2338 tx_pifs = tx_sifs + slottime; 2339 tx_difs = tx_sifs + 2 * slottime; 2340 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2341 2342 tmp = RAL_READ(sc, RT2560_CSR11); 2343 tmp = (tmp & ~0x1f00) | slottime << 8; 2344 RAL_WRITE(sc, RT2560_CSR11, tmp); 2345 2346 tmp = tx_pifs << 16 | tx_sifs; 2347 RAL_WRITE(sc, RT2560_CSR18, tmp); 2348 2349 tmp = eifs << 16 | tx_difs; 2350 RAL_WRITE(sc, RT2560_CSR19, tmp); 2351 2352 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2353} 2354 2355static void 2356rt2560_set_basicrates(struct rt2560_softc *sc) 2357{ 2358 struct ifnet *ifp = sc->sc_ifp; 2359 struct ieee80211com *ic = ifp->if_l2com; 2360 2361 /* update basic rate set */ 2362 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2363 /* 11b basic rates: 1, 2Mbps */ 2364 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2365 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2366 /* 11a basic rates: 6, 12, 24Mbps */ 2367 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2368 } else { 2369 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2370 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2371 } 2372} 2373 2374static void 2375rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2376{ 2377 uint32_t tmp; 2378 2379 /* set ON period to 70ms and OFF period to 30ms */ 2380 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2381 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2382} 2383 2384static void 2385rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2386{ 2387 uint32_t tmp; 2388 2389 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2390 RAL_WRITE(sc, RT2560_CSR5, tmp); 2391 2392 tmp = bssid[4] | bssid[5] << 8; 2393 RAL_WRITE(sc, RT2560_CSR6, tmp); 2394 2395 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2396} 2397 2398static void 2399rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2400{ 2401 uint32_t tmp; 2402 2403 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2404 RAL_WRITE(sc, RT2560_CSR3, tmp); 2405 2406 tmp = addr[4] | addr[5] << 8; 2407 RAL_WRITE(sc, RT2560_CSR4, tmp); 2408 2409 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2410} 2411 2412static void 2413rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2414{ 2415 uint32_t tmp; 2416 2417 tmp = RAL_READ(sc, RT2560_CSR3); 2418 addr[0] = tmp & 0xff; 2419 addr[1] = (tmp >> 8) & 0xff; 2420 addr[2] = (tmp >> 16) & 0xff; 2421 addr[3] = (tmp >> 24); 2422 2423 tmp = RAL_READ(sc, RT2560_CSR4); 2424 addr[4] = tmp & 0xff; 2425 addr[5] = (tmp >> 8) & 0xff; 2426} 2427 2428static void 2429rt2560_update_promisc(struct ifnet *ifp) 2430{ 2431 struct rt2560_softc *sc = ifp->if_softc; 2432 uint32_t tmp; 2433 2434 tmp = RAL_READ(sc, RT2560_RXCSR0); 2435 2436 tmp &= ~RT2560_DROP_NOT_TO_ME; 2437 if (!(ifp->if_flags & IFF_PROMISC)) 2438 tmp |= RT2560_DROP_NOT_TO_ME; 2439 2440 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2441 2442 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2443 "entering" : "leaving"); 2444} 2445 2446static const char * 2447rt2560_get_rf(int rev) 2448{ 2449 switch (rev) { 2450 case RT2560_RF_2522: return "RT2522"; 2451 case RT2560_RF_2523: return "RT2523"; 2452 case RT2560_RF_2524: return "RT2524"; 2453 case RT2560_RF_2525: return "RT2525"; 2454 case RT2560_RF_2525E: return "RT2525e"; 2455 case RT2560_RF_2526: return "RT2526"; 2456 case RT2560_RF_5222: return "RT5222"; 2457 default: return "unknown"; 2458 } 2459} 2460 2461static void 2462rt2560_read_config(struct rt2560_softc *sc) 2463{ 2464 uint16_t val; 2465 int i; 2466 2467 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2468 sc->rf_rev = (val >> 11) & 0x7; 2469 sc->hw_radio = (val >> 10) & 0x1; 2470 sc->led_mode = (val >> 6) & 0x7; 2471 sc->rx_ant = (val >> 4) & 0x3; 2472 sc->tx_ant = (val >> 2) & 0x3; 2473 sc->nb_ant = val & 0x3; 2474 2475 /* read default values for BBP registers */ 2476 for (i = 0; i < 16; i++) { 2477 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2478 if (val == 0 || val == 0xffff) 2479 continue; 2480 2481 sc->bbp_prom[i].reg = val >> 8; 2482 sc->bbp_prom[i].val = val & 0xff; 2483 } 2484 2485 /* read Tx power for all b/g channels */ 2486 for (i = 0; i < 14 / 2; i++) { 2487 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2488 sc->txpow[i * 2] = val & 0xff; 2489 sc->txpow[i * 2 + 1] = val >> 8; 2490 } 2491 for (i = 0; i < 14; ++i) { 2492 if (sc->txpow[i] > 31) 2493 sc->txpow[i] = 24; 2494 } 2495 2496 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2497 if ((val & 0xff) == 0xff) 2498 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2499 else 2500 sc->rssi_corr = val & 0xff; 2501 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2502 sc->rssi_corr, val); 2503} 2504 2505 2506static void 2507rt2560_scan_start(struct ieee80211com *ic) 2508{ 2509 struct ifnet *ifp = ic->ic_ifp; 2510 struct rt2560_softc *sc = ifp->if_softc; 2511 2512 /* abort TSF synchronization */ 2513 RAL_WRITE(sc, RT2560_CSR14, 0); 2514 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2515} 2516 2517static void 2518rt2560_scan_end(struct ieee80211com *ic) 2519{ 2520 struct ifnet *ifp = ic->ic_ifp; 2521 struct rt2560_softc *sc = ifp->if_softc; 2522 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2523 2524 rt2560_enable_tsf_sync(sc); 2525 /* XXX keep local copy */ 2526 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2527} 2528 2529static int 2530rt2560_bbp_init(struct rt2560_softc *sc) 2531{ 2532#define N(a) (sizeof (a) / sizeof ((a)[0])) 2533 int i, ntries; 2534 2535 /* wait for BBP to be ready */ 2536 for (ntries = 0; ntries < 100; ntries++) { 2537 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2538 break; 2539 DELAY(1); 2540 } 2541 if (ntries == 100) { 2542 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2543 return EIO; 2544 } 2545 2546 /* initialize BBP registers to default values */ 2547 for (i = 0; i < N(rt2560_def_bbp); i++) { 2548 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2549 rt2560_def_bbp[i].val); 2550 } 2551 2552 /* initialize BBP registers to values stored in EEPROM */ 2553 for (i = 0; i < 16; i++) { 2554 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2555 break; 2556 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2557 } 2558 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2559 2560 return 0; 2561#undef N 2562} 2563 2564static void 2565rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2566{ 2567 uint32_t tmp; 2568 uint8_t tx; 2569 2570 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2571 if (antenna == 1) 2572 tx |= RT2560_BBP_ANTA; 2573 else if (antenna == 2) 2574 tx |= RT2560_BBP_ANTB; 2575 else 2576 tx |= RT2560_BBP_DIVERSITY; 2577 2578 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2579 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2580 sc->rf_rev == RT2560_RF_5222) 2581 tx |= RT2560_BBP_FLIPIQ; 2582 2583 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2584 2585 /* update values for CCK and OFDM in BBPCSR1 */ 2586 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2587 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2588 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2589} 2590 2591static void 2592rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2593{ 2594 uint8_t rx; 2595 2596 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2597 if (antenna == 1) 2598 rx |= RT2560_BBP_ANTA; 2599 else if (antenna == 2) 2600 rx |= RT2560_BBP_ANTB; 2601 else 2602 rx |= RT2560_BBP_DIVERSITY; 2603 2604 /* need to force no I/Q flip for RF 2525e and 2526 */ 2605 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2606 rx &= ~RT2560_BBP_FLIPIQ; 2607 2608 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2609} 2610 2611static void 2612rt2560_init_locked(struct rt2560_softc *sc) 2613{ 2614#define N(a) (sizeof (a) / sizeof ((a)[0])) 2615 struct ifnet *ifp = sc->sc_ifp; 2616 struct ieee80211com *ic = ifp->if_l2com; 2617 uint32_t tmp; 2618 int i; 2619 2620 RAL_LOCK_ASSERT(sc); 2621 2622 rt2560_stop_locked(sc); 2623 2624 /* setup tx rings */ 2625 tmp = RT2560_PRIO_RING_COUNT << 24 | 2626 RT2560_ATIM_RING_COUNT << 16 | 2627 RT2560_TX_RING_COUNT << 8 | 2628 RT2560_TX_DESC_SIZE; 2629 2630 /* rings must be initialized in this exact order */ 2631 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2632 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2633 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2634 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2635 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2636 2637 /* setup rx ring */ 2638 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2639 2640 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2641 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2642 2643 /* initialize MAC registers to default values */ 2644 for (i = 0; i < N(rt2560_def_mac); i++) 2645 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2646 2647 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2648 2649 /* set basic rate set (will be updated later) */ 2650 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2651 2652 rt2560_update_slot(ifp); 2653 rt2560_update_plcp(sc); 2654 rt2560_update_led(sc, 0, 0); 2655 2656 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2657 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2658 2659 if (rt2560_bbp_init(sc) != 0) { 2660 rt2560_stop_locked(sc); 2661 return; 2662 } 2663 2664 rt2560_set_txantenna(sc, sc->tx_ant); 2665 rt2560_set_rxantenna(sc, sc->rx_ant); 2666 2667 /* set default BSS channel */ 2668 rt2560_set_chan(sc, ic->ic_curchan); 2669 2670 /* kick Rx */ 2671 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2672 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2673 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2674 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2675 ic->ic_opmode != IEEE80211_M_MBSS) 2676 tmp |= RT2560_DROP_TODS; 2677 if (!(ifp->if_flags & IFF_PROMISC)) 2678 tmp |= RT2560_DROP_NOT_TO_ME; 2679 } 2680 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2681 2682 /* clear old FCS and Rx FIFO errors */ 2683 RAL_READ(sc, RT2560_CNT0); 2684 RAL_READ(sc, RT2560_CNT4); 2685 2686 /* clear any pending interrupts */ 2687 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2688 2689 /* enable interrupts */ 2690 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2691 2692 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2693 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2694 2695 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2696#undef N 2697} 2698 2699static void 2700rt2560_init(void *priv) 2701{ 2702 struct rt2560_softc *sc = priv; 2703 struct ifnet *ifp = sc->sc_ifp; 2704 struct ieee80211com *ic = ifp->if_l2com; 2705 2706 RAL_LOCK(sc); 2707 rt2560_init_locked(sc); 2708 RAL_UNLOCK(sc); 2709 2710 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2711 ieee80211_start_all(ic); /* start all vap's */ 2712} 2713 2714static void 2715rt2560_stop_locked(struct rt2560_softc *sc) 2716{ 2717 struct ifnet *ifp = sc->sc_ifp; 2718 volatile int *flags = &sc->sc_flags; 2719 2720 RAL_LOCK_ASSERT(sc); 2721 2722 while (*flags & RT2560_F_INPUT_RUNNING) 2723 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2724 2725 callout_stop(&sc->watchdog_ch); 2726 sc->sc_tx_timer = 0; 2727 2728 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2729 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2730 2731 /* abort Tx */ 2732 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2733 2734 /* disable Rx */ 2735 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2736 2737 /* reset ASIC (imply reset BBP) */ 2738 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2739 RAL_WRITE(sc, RT2560_CSR1, 0); 2740 2741 /* disable interrupts */ 2742 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2743 2744 /* reset Tx and Rx rings */ 2745 rt2560_reset_tx_ring(sc, &sc->txq); 2746 rt2560_reset_tx_ring(sc, &sc->atimq); 2747 rt2560_reset_tx_ring(sc, &sc->prioq); 2748 rt2560_reset_tx_ring(sc, &sc->bcnq); 2749 rt2560_reset_rx_ring(sc, &sc->rxq); 2750 } 2751 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2752} 2753 2754void 2755rt2560_stop(void *arg) 2756{ 2757 struct rt2560_softc *sc = arg; 2758 2759 RAL_LOCK(sc); 2760 rt2560_stop_locked(sc); 2761 RAL_UNLOCK(sc); 2762} 2763 2764static int 2765rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2766 const struct ieee80211_bpf_params *params) 2767{ 2768 struct ieee80211com *ic = ni->ni_ic; 2769 struct ifnet *ifp = ic->ic_ifp; 2770 struct rt2560_softc *sc = ifp->if_softc; 2771 2772 RAL_LOCK(sc); 2773 2774 /* prevent management frames from being sent if we're not ready */ 2775 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2776 RAL_UNLOCK(sc); 2777 m_freem(m); 2778 ieee80211_free_node(ni); 2779 return ENETDOWN; 2780 } 2781 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2782 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2783 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2784 RAL_UNLOCK(sc); 2785 m_freem(m); 2786 ieee80211_free_node(ni); 2787 return ENOBUFS; /* XXX */ 2788 } 2789 2790 ifp->if_opackets++; 2791 2792 if (params == NULL) { 2793 /* 2794 * Legacy path; interpret frame contents to decide 2795 * precisely how to send the frame. 2796 */ 2797 if (rt2560_tx_mgt(sc, m, ni) != 0) 2798 goto bad; 2799 } else { 2800 /* 2801 * Caller supplied explicit parameters to use in 2802 * sending the frame. 2803 */ 2804 if (rt2560_tx_raw(sc, m, ni, params)) 2805 goto bad; 2806 } 2807 sc->sc_tx_timer = 5; 2808 2809 RAL_UNLOCK(sc); 2810 2811 return 0; 2812bad: 2813 ifp->if_oerrors++; 2814 ieee80211_free_node(ni); 2815 RAL_UNLOCK(sc); 2816 return EIO; /* XXX */ 2817} 2818