rt2560.c revision 283527
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 283527 2015-05-25 13:51:13Z glebius $ */ 2 3/*- 4 * Copyright (c) 2005, 2006 5 * Damien Bergamini <damien.bergamini@free.fr> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20#include <sys/cdefs.h> 21__FBSDID("$FreeBSD: head/sys/dev/ral/rt2560.c 283527 2015-05-25 13:51:13Z glebius $"); 22 23/*- 24 * Ralink Technology RT2560 chipset driver 25 * http://www.ralinktech.com/ 26 */ 27 28#include <sys/param.h> 29#include <sys/sysctl.h> 30#include <sys/sockio.h> 31#include <sys/mbuf.h> 32#include <sys/kernel.h> 33#include <sys/socket.h> 34#include <sys/systm.h> 35#include <sys/malloc.h> 36#include <sys/lock.h> 37#include <sys/mutex.h> 38#include <sys/module.h> 39#include <sys/bus.h> 40#include <sys/endian.h> 41 42#include <machine/bus.h> 43#include <machine/resource.h> 44#include <sys/rman.h> 45 46#include <net/bpf.h> 47#include <net/if.h> 48#include <net/if_var.h> 49#include <net/if_arp.h> 50#include <net/ethernet.h> 51#include <net/if_dl.h> 52#include <net/if_media.h> 53#include <net/if_types.h> 54 55#include <net80211/ieee80211_var.h> 56#include <net80211/ieee80211_radiotap.h> 57#include <net80211/ieee80211_regdomain.h> 58#include <net80211/ieee80211_ratectl.h> 59 60#include <netinet/in.h> 61#include <netinet/in_systm.h> 62#include <netinet/in_var.h> 63#include <netinet/ip.h> 64#include <netinet/if_ether.h> 65 66#include <dev/ral/rt2560reg.h> 67#include <dev/ral/rt2560var.h> 68 69#define RT2560_RSSI(sc, rssi) \ 70 ((rssi) > (RT2560_NOISE_FLOOR + (sc)->rssi_corr) ? \ 71 ((rssi) - RT2560_NOISE_FLOOR - (sc)->rssi_corr) : 0) 72 73#define RAL_DEBUG 74#ifdef RAL_DEBUG 75#define DPRINTF(sc, fmt, ...) do { \ 76 if (sc->sc_debug > 0) \ 77 printf(fmt, __VA_ARGS__); \ 78} while (0) 79#define DPRINTFN(sc, n, fmt, ...) do { \ 80 if (sc->sc_debug >= (n)) \ 81 printf(fmt, __VA_ARGS__); \ 82} while (0) 83#else 84#define DPRINTF(sc, fmt, ...) 85#define DPRINTFN(sc, n, fmt, ...) 86#endif 87 88static struct ieee80211vap *rt2560_vap_create(struct ieee80211com *, 89 const char [IFNAMSIZ], int, enum ieee80211_opmode, 90 int, const uint8_t [IEEE80211_ADDR_LEN], 91 const uint8_t [IEEE80211_ADDR_LEN]); 92static void rt2560_vap_delete(struct ieee80211vap *); 93static void rt2560_dma_map_addr(void *, bus_dma_segment_t *, int, 94 int); 95static int rt2560_alloc_tx_ring(struct rt2560_softc *, 96 struct rt2560_tx_ring *, int); 97static void rt2560_reset_tx_ring(struct rt2560_softc *, 98 struct rt2560_tx_ring *); 99static void rt2560_free_tx_ring(struct rt2560_softc *, 100 struct rt2560_tx_ring *); 101static int rt2560_alloc_rx_ring(struct rt2560_softc *, 102 struct rt2560_rx_ring *, int); 103static void rt2560_reset_rx_ring(struct rt2560_softc *, 104 struct rt2560_rx_ring *); 105static void rt2560_free_rx_ring(struct rt2560_softc *, 106 struct rt2560_rx_ring *); 107static int rt2560_newstate(struct ieee80211vap *, 108 enum ieee80211_state, int); 109static uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 110static void rt2560_encryption_intr(struct rt2560_softc *); 111static void rt2560_tx_intr(struct rt2560_softc *); 112static void rt2560_prio_intr(struct rt2560_softc *); 113static void rt2560_decryption_intr(struct rt2560_softc *); 114static void rt2560_rx_intr(struct rt2560_softc *); 115static void rt2560_beacon_update(struct ieee80211vap *, int item); 116static void rt2560_beacon_expire(struct rt2560_softc *); 117static void rt2560_wakeup_expire(struct rt2560_softc *); 118static void rt2560_scan_start(struct ieee80211com *); 119static void rt2560_scan_end(struct ieee80211com *); 120static void rt2560_set_channel(struct ieee80211com *); 121static void rt2560_setup_tx_desc(struct rt2560_softc *, 122 struct rt2560_tx_desc *, uint32_t, int, int, int, 123 bus_addr_t); 124static int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 125 struct ieee80211_node *); 126static int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 127 struct ieee80211_node *); 128static int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 129 struct ieee80211_node *); 130static void rt2560_start_locked(struct ifnet *); 131static void rt2560_start(struct ifnet *); 132static void rt2560_watchdog(void *); 133static int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 134static void rt2560_bbp_write(struct rt2560_softc *, uint8_t, 135 uint8_t); 136static uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 137static void rt2560_rf_write(struct rt2560_softc *, uint8_t, 138 uint32_t); 139static void rt2560_set_chan(struct rt2560_softc *, 140 struct ieee80211_channel *); 141#if 0 142static void rt2560_disable_rf_tune(struct rt2560_softc *); 143#endif 144static void rt2560_enable_tsf_sync(struct rt2560_softc *); 145static void rt2560_enable_tsf(struct rt2560_softc *); 146static void rt2560_update_plcp(struct rt2560_softc *); 147static void rt2560_update_slot(struct ifnet *); 148static void rt2560_set_basicrates(struct rt2560_softc *, 149 const struct ieee80211_rateset *); 150static void rt2560_update_led(struct rt2560_softc *, int, int); 151static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 152static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 153static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 154static void rt2560_update_promisc(struct ifnet *); 155static const char *rt2560_get_rf(int); 156static void rt2560_read_config(struct rt2560_softc *); 157static int rt2560_bbp_init(struct rt2560_softc *); 158static void rt2560_set_txantenna(struct rt2560_softc *, int); 159static void rt2560_set_rxantenna(struct rt2560_softc *, int); 160static void rt2560_init_locked(struct rt2560_softc *); 161static void rt2560_init(void *); 162static void rt2560_stop_locked(struct rt2560_softc *); 163static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 164 const struct ieee80211_bpf_params *); 165 166static const struct { 167 uint32_t reg; 168 uint32_t val; 169} rt2560_def_mac[] = { 170 RT2560_DEF_MAC 171}; 172 173static const struct { 174 uint8_t reg; 175 uint8_t val; 176} rt2560_def_bbp[] = { 177 RT2560_DEF_BBP 178}; 179 180static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 181static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 182static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 183static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 184static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 185static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 186static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 187static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 188 189static const struct { 190 uint8_t chan; 191 uint32_t r1, r2, r4; 192} rt2560_rf5222[] = { 193 RT2560_RF5222 194}; 195 196int 197rt2560_attach(device_t dev, int id) 198{ 199 struct rt2560_softc *sc = device_get_softc(dev); 200 struct ieee80211com *ic; 201 struct ifnet *ifp; 202 int error; 203 uint8_t bands; 204 uint8_t macaddr[IEEE80211_ADDR_LEN]; 205 206 sc->sc_dev = dev; 207 208 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 209 MTX_DEF | MTX_RECURSE); 210 211 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 212 213 /* retrieve RT2560 rev. no */ 214 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 215 216 /* retrieve RF rev. no and various other things from EEPROM */ 217 rt2560_read_config(sc); 218 219 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 220 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 221 222 /* 223 * Allocate Tx and Rx rings. 224 */ 225 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 226 if (error != 0) { 227 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 228 goto fail1; 229 } 230 231 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 232 if (error != 0) { 233 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 234 goto fail2; 235 } 236 237 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 238 if (error != 0) { 239 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 240 goto fail3; 241 } 242 243 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 244 if (error != 0) { 245 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 246 goto fail4; 247 } 248 249 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 250 if (error != 0) { 251 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 252 goto fail5; 253 } 254 255 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 256 if (ifp == NULL) { 257 device_printf(sc->sc_dev, "can not if_alloc()\n"); 258 goto fail6; 259 } 260 ic = ifp->if_l2com; 261 262 /* retrieve MAC address */ 263 rt2560_get_macaddr(sc, macaddr); 264 265 ifp->if_softc = sc; 266 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 267 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 268 ifp->if_init = rt2560_init; 269 ifp->if_ioctl = rt2560_ioctl; 270 ifp->if_start = rt2560_start; 271 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 272 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 273 IFQ_SET_READY(&ifp->if_snd); 274 275 ic->ic_ifp = ifp; 276 ic->ic_name = device_get_nameunit(dev); 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#endif 296 ; 297 298 bands = 0; 299 setbit(&bands, IEEE80211_MODE_11B); 300 setbit(&bands, IEEE80211_MODE_11G); 301 if (sc->rf_rev == RT2560_RF_5222) 302 setbit(&bands, IEEE80211_MODE_11A); 303 ieee80211_init_channels(ic, NULL, &bands); 304 305 ieee80211_ifattach(ic, macaddr); 306 ic->ic_raw_xmit = rt2560_raw_xmit; 307 ic->ic_updateslot = rt2560_update_slot; 308 ic->ic_update_promisc = rt2560_update_promisc; 309 ic->ic_scan_start = rt2560_scan_start; 310 ic->ic_scan_end = rt2560_scan_end; 311 ic->ic_set_channel = rt2560_set_channel; 312 313 ic->ic_vap_create = rt2560_vap_create; 314 ic->ic_vap_delete = rt2560_vap_delete; 315 316 ieee80211_radiotap_attach(ic, 317 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 318 RT2560_TX_RADIOTAP_PRESENT, 319 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 320 RT2560_RX_RADIOTAP_PRESENT); 321 322 /* 323 * Add a few sysctl knobs. 324 */ 325#ifdef RAL_DEBUG 326 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 327 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 328 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 329#endif 330 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 331 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 332 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 333 334 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 335 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 336 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 337 338 if (bootverbose) 339 ieee80211_announce(ic); 340 341 return 0; 342 343fail6: rt2560_free_rx_ring(sc, &sc->rxq); 344fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 345fail4: rt2560_free_tx_ring(sc, &sc->prioq); 346fail3: rt2560_free_tx_ring(sc, &sc->atimq); 347fail2: rt2560_free_tx_ring(sc, &sc->txq); 348fail1: mtx_destroy(&sc->sc_mtx); 349 350 return ENXIO; 351} 352 353int 354rt2560_detach(void *xsc) 355{ 356 struct rt2560_softc *sc = xsc; 357 struct ifnet *ifp = sc->sc_ifp; 358 struct ieee80211com *ic = ifp->if_l2com; 359 360 rt2560_stop(sc); 361 362 ieee80211_ifdetach(ic); 363 364 rt2560_free_tx_ring(sc, &sc->txq); 365 rt2560_free_tx_ring(sc, &sc->atimq); 366 rt2560_free_tx_ring(sc, &sc->prioq); 367 rt2560_free_tx_ring(sc, &sc->bcnq); 368 rt2560_free_rx_ring(sc, &sc->rxq); 369 370 if_free(ifp); 371 372 mtx_destroy(&sc->sc_mtx); 373 374 return 0; 375} 376 377static struct ieee80211vap * 378rt2560_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 379 enum ieee80211_opmode opmode, int flags, 380 const uint8_t bssid[IEEE80211_ADDR_LEN], 381 const uint8_t mac[IEEE80211_ADDR_LEN]) 382{ 383 struct ifnet *ifp = ic->ic_ifp; 384 struct rt2560_vap *rvp; 385 struct ieee80211vap *vap; 386 387 switch (opmode) { 388 case IEEE80211_M_STA: 389 case IEEE80211_M_IBSS: 390 case IEEE80211_M_AHDEMO: 391 case IEEE80211_M_MONITOR: 392 case IEEE80211_M_HOSTAP: 393 case IEEE80211_M_MBSS: 394 /* XXXRP: TBD */ 395 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 396 if_printf(ifp, "only 1 vap supported\n"); 397 return NULL; 398 } 399 if (opmode == IEEE80211_M_STA) 400 flags |= IEEE80211_CLONE_NOBEACONS; 401 break; 402 case IEEE80211_M_WDS: 403 if (TAILQ_EMPTY(&ic->ic_vaps) || 404 ic->ic_opmode != IEEE80211_M_HOSTAP) { 405 if_printf(ifp, "wds only supported in ap mode\n"); 406 return NULL; 407 } 408 /* 409 * Silently remove any request for a unique 410 * bssid; WDS vap's always share the local 411 * mac address. 412 */ 413 flags &= ~IEEE80211_CLONE_BSSID; 414 break; 415 default: 416 if_printf(ifp, "unknown opmode %d\n", opmode); 417 return NULL; 418 } 419 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 420 M_80211_VAP, M_NOWAIT | M_ZERO); 421 if (rvp == NULL) 422 return NULL; 423 vap = &rvp->ral_vap; 424 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 425 426 /* override state transition machine */ 427 rvp->ral_newstate = vap->iv_newstate; 428 vap->iv_newstate = rt2560_newstate; 429 vap->iv_update_beacon = rt2560_beacon_update; 430 431 ieee80211_ratectl_init(vap); 432 /* complete setup */ 433 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 434 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 435 ic->ic_opmode = opmode; 436 return vap; 437} 438 439static void 440rt2560_vap_delete(struct ieee80211vap *vap) 441{ 442 struct rt2560_vap *rvp = RT2560_VAP(vap); 443 444 ieee80211_ratectl_deinit(vap); 445 ieee80211_vap_detach(vap); 446 free(rvp, M_80211_VAP); 447} 448 449void 450rt2560_resume(void *xsc) 451{ 452 struct rt2560_softc *sc = xsc; 453 struct ifnet *ifp = sc->sc_ifp; 454 455 if (ifp->if_flags & IFF_UP) 456 rt2560_init(sc); 457} 458 459static void 460rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 461{ 462 if (error != 0) 463 return; 464 465 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 466 467 *(bus_addr_t *)arg = segs[0].ds_addr; 468} 469 470static int 471rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 472 int count) 473{ 474 int i, error; 475 476 ring->count = count; 477 ring->queued = 0; 478 ring->cur = ring->next = 0; 479 ring->cur_encrypt = ring->next_encrypt = 0; 480 481 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 482 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 483 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 484 0, NULL, NULL, &ring->desc_dmat); 485 if (error != 0) { 486 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 487 goto fail; 488 } 489 490 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 491 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 492 if (error != 0) { 493 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 494 goto fail; 495 } 496 497 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 498 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 499 0); 500 if (error != 0) { 501 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 502 goto fail; 503 } 504 505 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 506 M_NOWAIT | M_ZERO); 507 if (ring->data == NULL) { 508 device_printf(sc->sc_dev, "could not allocate soft data\n"); 509 error = ENOMEM; 510 goto fail; 511 } 512 513 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 514 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 515 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 516 &ring->data_dmat); 517 if (error != 0) { 518 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 519 goto fail; 520 } 521 522 for (i = 0; i < count; i++) { 523 error = bus_dmamap_create(ring->data_dmat, 0, 524 &ring->data[i].map); 525 if (error != 0) { 526 device_printf(sc->sc_dev, "could not create DMA map\n"); 527 goto fail; 528 } 529 } 530 531 return 0; 532 533fail: rt2560_free_tx_ring(sc, ring); 534 return error; 535} 536 537static void 538rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 539{ 540 struct rt2560_tx_desc *desc; 541 struct rt2560_tx_data *data; 542 int i; 543 544 for (i = 0; i < ring->count; i++) { 545 desc = &ring->desc[i]; 546 data = &ring->data[i]; 547 548 if (data->m != NULL) { 549 bus_dmamap_sync(ring->data_dmat, data->map, 550 BUS_DMASYNC_POSTWRITE); 551 bus_dmamap_unload(ring->data_dmat, data->map); 552 m_freem(data->m); 553 data->m = NULL; 554 } 555 556 if (data->ni != NULL) { 557 ieee80211_free_node(data->ni); 558 data->ni = NULL; 559 } 560 561 desc->flags = 0; 562 } 563 564 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 565 566 ring->queued = 0; 567 ring->cur = ring->next = 0; 568 ring->cur_encrypt = ring->next_encrypt = 0; 569} 570 571static void 572rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 573{ 574 struct rt2560_tx_data *data; 575 int i; 576 577 if (ring->desc != NULL) { 578 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 579 BUS_DMASYNC_POSTWRITE); 580 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 581 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 582 } 583 584 if (ring->desc_dmat != NULL) 585 bus_dma_tag_destroy(ring->desc_dmat); 586 587 if (ring->data != NULL) { 588 for (i = 0; i < ring->count; i++) { 589 data = &ring->data[i]; 590 591 if (data->m != NULL) { 592 bus_dmamap_sync(ring->data_dmat, data->map, 593 BUS_DMASYNC_POSTWRITE); 594 bus_dmamap_unload(ring->data_dmat, data->map); 595 m_freem(data->m); 596 } 597 598 if (data->ni != NULL) 599 ieee80211_free_node(data->ni); 600 601 if (data->map != NULL) 602 bus_dmamap_destroy(ring->data_dmat, data->map); 603 } 604 605 free(ring->data, M_DEVBUF); 606 } 607 608 if (ring->data_dmat != NULL) 609 bus_dma_tag_destroy(ring->data_dmat); 610} 611 612static int 613rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 614 int count) 615{ 616 struct rt2560_rx_desc *desc; 617 struct rt2560_rx_data *data; 618 bus_addr_t physaddr; 619 int i, error; 620 621 ring->count = count; 622 ring->cur = ring->next = 0; 623 ring->cur_decrypt = 0; 624 625 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 626 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 627 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 628 0, NULL, NULL, &ring->desc_dmat); 629 if (error != 0) { 630 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 631 goto fail; 632 } 633 634 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 635 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 636 if (error != 0) { 637 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 638 goto fail; 639 } 640 641 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 642 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 643 0); 644 if (error != 0) { 645 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 646 goto fail; 647 } 648 649 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 650 M_NOWAIT | M_ZERO); 651 if (ring->data == NULL) { 652 device_printf(sc->sc_dev, "could not allocate soft data\n"); 653 error = ENOMEM; 654 goto fail; 655 } 656 657 /* 658 * Pre-allocate Rx buffers and populate Rx ring. 659 */ 660 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 661 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 662 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 663 if (error != 0) { 664 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 665 goto fail; 666 } 667 668 for (i = 0; i < count; i++) { 669 desc = &sc->rxq.desc[i]; 670 data = &sc->rxq.data[i]; 671 672 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 673 if (error != 0) { 674 device_printf(sc->sc_dev, "could not create DMA map\n"); 675 goto fail; 676 } 677 678 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 679 if (data->m == NULL) { 680 device_printf(sc->sc_dev, 681 "could not allocate rx mbuf\n"); 682 error = ENOMEM; 683 goto fail; 684 } 685 686 error = bus_dmamap_load(ring->data_dmat, data->map, 687 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 688 &physaddr, 0); 689 if (error != 0) { 690 device_printf(sc->sc_dev, 691 "could not load rx buf DMA map"); 692 goto fail; 693 } 694 695 desc->flags = htole32(RT2560_RX_BUSY); 696 desc->physaddr = htole32(physaddr); 697 } 698 699 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 700 701 return 0; 702 703fail: rt2560_free_rx_ring(sc, ring); 704 return error; 705} 706 707static void 708rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 709{ 710 int i; 711 712 for (i = 0; i < ring->count; i++) { 713 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 714 ring->data[i].drop = 0; 715 } 716 717 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 718 719 ring->cur = ring->next = 0; 720 ring->cur_decrypt = 0; 721} 722 723static void 724rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 725{ 726 struct rt2560_rx_data *data; 727 int i; 728 729 if (ring->desc != NULL) { 730 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 731 BUS_DMASYNC_POSTWRITE); 732 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 733 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 734 } 735 736 if (ring->desc_dmat != NULL) 737 bus_dma_tag_destroy(ring->desc_dmat); 738 739 if (ring->data != NULL) { 740 for (i = 0; i < ring->count; i++) { 741 data = &ring->data[i]; 742 743 if (data->m != NULL) { 744 bus_dmamap_sync(ring->data_dmat, data->map, 745 BUS_DMASYNC_POSTREAD); 746 bus_dmamap_unload(ring->data_dmat, data->map); 747 m_freem(data->m); 748 } 749 750 if (data->map != NULL) 751 bus_dmamap_destroy(ring->data_dmat, data->map); 752 } 753 754 free(ring->data, M_DEVBUF); 755 } 756 757 if (ring->data_dmat != NULL) 758 bus_dma_tag_destroy(ring->data_dmat); 759} 760 761static int 762rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 763{ 764 struct rt2560_vap *rvp = RT2560_VAP(vap); 765 struct ifnet *ifp = vap->iv_ic->ic_ifp; 766 struct rt2560_softc *sc = ifp->if_softc; 767 int error; 768 769 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 770 /* abort TSF synchronization */ 771 RAL_WRITE(sc, RT2560_CSR14, 0); 772 773 /* turn association led off */ 774 rt2560_update_led(sc, 0, 0); 775 } 776 777 error = rvp->ral_newstate(vap, nstate, arg); 778 779 if (error == 0 && nstate == IEEE80211_S_RUN) { 780 struct ieee80211_node *ni = vap->iv_bss; 781 struct mbuf *m; 782 783 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 784 rt2560_update_plcp(sc); 785 rt2560_set_basicrates(sc, &ni->ni_rates); 786 rt2560_set_bssid(sc, ni->ni_bssid); 787 } 788 789 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 790 vap->iv_opmode == IEEE80211_M_IBSS || 791 vap->iv_opmode == IEEE80211_M_MBSS) { 792 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 793 if (m == NULL) { 794 if_printf(ifp, "could not allocate beacon\n"); 795 return ENOBUFS; 796 } 797 ieee80211_ref_node(ni); 798 error = rt2560_tx_bcn(sc, m, ni); 799 if (error != 0) 800 return error; 801 } 802 803 /* turn assocation led on */ 804 rt2560_update_led(sc, 1, 0); 805 806 if (vap->iv_opmode != IEEE80211_M_MONITOR) 807 rt2560_enable_tsf_sync(sc); 808 else 809 rt2560_enable_tsf(sc); 810 } 811 return error; 812} 813 814/* 815 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 816 * 93C66). 817 */ 818static uint16_t 819rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 820{ 821 uint32_t tmp; 822 uint16_t val; 823 int n; 824 825 /* clock C once before the first command */ 826 RT2560_EEPROM_CTL(sc, 0); 827 828 RT2560_EEPROM_CTL(sc, RT2560_S); 829 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 830 RT2560_EEPROM_CTL(sc, RT2560_S); 831 832 /* write start bit (1) */ 833 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 834 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 835 836 /* write READ opcode (10) */ 837 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 838 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 839 RT2560_EEPROM_CTL(sc, RT2560_S); 840 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 841 842 /* write address (A5-A0 or A7-A0) */ 843 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 844 for (; n >= 0; n--) { 845 RT2560_EEPROM_CTL(sc, RT2560_S | 846 (((addr >> n) & 1) << RT2560_SHIFT_D)); 847 RT2560_EEPROM_CTL(sc, RT2560_S | 848 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 849 } 850 851 RT2560_EEPROM_CTL(sc, RT2560_S); 852 853 /* read data Q15-Q0 */ 854 val = 0; 855 for (n = 15; n >= 0; n--) { 856 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 857 tmp = RAL_READ(sc, RT2560_CSR21); 858 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 859 RT2560_EEPROM_CTL(sc, RT2560_S); 860 } 861 862 RT2560_EEPROM_CTL(sc, 0); 863 864 /* clear Chip Select and clock C */ 865 RT2560_EEPROM_CTL(sc, RT2560_S); 866 RT2560_EEPROM_CTL(sc, 0); 867 RT2560_EEPROM_CTL(sc, RT2560_C); 868 869 return val; 870} 871 872/* 873 * Some frames were processed by the hardware cipher engine and are ready for 874 * transmission. 875 */ 876static void 877rt2560_encryption_intr(struct rt2560_softc *sc) 878{ 879 struct rt2560_tx_desc *desc; 880 int hw; 881 882 /* retrieve last descriptor index processed by cipher engine */ 883 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 884 hw /= RT2560_TX_DESC_SIZE; 885 886 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 887 BUS_DMASYNC_POSTREAD); 888 889 while (sc->txq.next_encrypt != hw) { 890 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 891 printf("hw encrypt %d, cur_encrypt %d\n", hw, 892 sc->txq.cur_encrypt); 893 break; 894 } 895 896 desc = &sc->txq.desc[sc->txq.next_encrypt]; 897 898 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 899 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 900 break; 901 902 /* for TKIP, swap eiv field to fix a bug in ASIC */ 903 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 904 RT2560_TX_CIPHER_TKIP) 905 desc->eiv = bswap32(desc->eiv); 906 907 /* mark the frame ready for transmission */ 908 desc->flags |= htole32(RT2560_TX_VALID); 909 desc->flags |= htole32(RT2560_TX_BUSY); 910 911 DPRINTFN(sc, 15, "encryption done idx=%u\n", 912 sc->txq.next_encrypt); 913 914 sc->txq.next_encrypt = 915 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 916 } 917 918 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 919 BUS_DMASYNC_PREWRITE); 920 921 /* kick Tx */ 922 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 923} 924 925static void 926rt2560_tx_intr(struct rt2560_softc *sc) 927{ 928 struct ifnet *ifp = sc->sc_ifp; 929 struct rt2560_tx_desc *desc; 930 struct rt2560_tx_data *data; 931 struct mbuf *m; 932 uint32_t flags; 933 int retrycnt; 934 struct ieee80211vap *vap; 935 struct ieee80211_node *ni; 936 937 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 938 BUS_DMASYNC_POSTREAD); 939 940 for (;;) { 941 desc = &sc->txq.desc[sc->txq.next]; 942 data = &sc->txq.data[sc->txq.next]; 943 944 flags = le32toh(desc->flags); 945 if ((flags & RT2560_TX_BUSY) || 946 (flags & RT2560_TX_CIPHER_BUSY) || 947 !(flags & RT2560_TX_VALID)) 948 break; 949 950 m = data->m; 951 ni = data->ni; 952 vap = ni->ni_vap; 953 954 switch (flags & RT2560_TX_RESULT_MASK) { 955 case RT2560_TX_SUCCESS: 956 retrycnt = 0; 957 958 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 959 if (data->rix != IEEE80211_FIXED_RATE_NONE) 960 ieee80211_ratectl_tx_complete(vap, ni, 961 IEEE80211_RATECTL_TX_SUCCESS, 962 &retrycnt, NULL); 963 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 964 break; 965 966 case RT2560_TX_SUCCESS_RETRY: 967 retrycnt = RT2560_TX_RETRYCNT(flags); 968 969 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 970 retrycnt); 971 if (data->rix != IEEE80211_FIXED_RATE_NONE) 972 ieee80211_ratectl_tx_complete(vap, ni, 973 IEEE80211_RATECTL_TX_SUCCESS, 974 &retrycnt, NULL); 975 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 976 break; 977 978 case RT2560_TX_FAIL_RETRY: 979 retrycnt = RT2560_TX_RETRYCNT(flags); 980 981 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 982 retrycnt); 983 if (data->rix != IEEE80211_FIXED_RATE_NONE) 984 ieee80211_ratectl_tx_complete(vap, ni, 985 IEEE80211_RATECTL_TX_FAILURE, 986 &retrycnt, NULL); 987 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 988 break; 989 990 case RT2560_TX_FAIL_INVALID: 991 case RT2560_TX_FAIL_OTHER: 992 default: 993 device_printf(sc->sc_dev, "sending data frame failed " 994 "0x%08x\n", flags); 995 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 996 } 997 998 bus_dmamap_sync(sc->txq.data_dmat, data->map, 999 BUS_DMASYNC_POSTWRITE); 1000 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1001 m_freem(m); 1002 data->m = NULL; 1003 ieee80211_free_node(data->ni); 1004 data->ni = NULL; 1005 1006 /* descriptor is no longer valid */ 1007 desc->flags &= ~htole32(RT2560_TX_VALID); 1008 1009 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1010 1011 sc->txq.queued--; 1012 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1013 } 1014 1015 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1016 BUS_DMASYNC_PREWRITE); 1017 1018 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1019 sc->sc_tx_timer = 0; 1020 1021 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1022 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1023 if ((sc->sc_flags & 1024 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1025 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1026 rt2560_start_locked(ifp); 1027 } 1028} 1029 1030static void 1031rt2560_prio_intr(struct rt2560_softc *sc) 1032{ 1033 struct ifnet *ifp = sc->sc_ifp; 1034 struct rt2560_tx_desc *desc; 1035 struct rt2560_tx_data *data; 1036 struct ieee80211_node *ni; 1037 struct mbuf *m; 1038 int flags; 1039 1040 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1041 BUS_DMASYNC_POSTREAD); 1042 1043 for (;;) { 1044 desc = &sc->prioq.desc[sc->prioq.next]; 1045 data = &sc->prioq.data[sc->prioq.next]; 1046 1047 flags = le32toh(desc->flags); 1048 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1049 break; 1050 1051 switch (flags & RT2560_TX_RESULT_MASK) { 1052 case RT2560_TX_SUCCESS: 1053 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1054 break; 1055 1056 case RT2560_TX_SUCCESS_RETRY: 1057 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1058 (flags >> 5) & 0x7); 1059 break; 1060 1061 case RT2560_TX_FAIL_RETRY: 1062 DPRINTFN(sc, 9, "%s\n", 1063 "sending mgt frame failed (too much retries)"); 1064 break; 1065 1066 case RT2560_TX_FAIL_INVALID: 1067 case RT2560_TX_FAIL_OTHER: 1068 default: 1069 device_printf(sc->sc_dev, "sending mgt frame failed " 1070 "0x%08x\n", flags); 1071 break; 1072 } 1073 1074 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1075 BUS_DMASYNC_POSTWRITE); 1076 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1077 1078 m = data->m; 1079 data->m = NULL; 1080 ni = data->ni; 1081 data->ni = NULL; 1082 1083 /* descriptor is no longer valid */ 1084 desc->flags &= ~htole32(RT2560_TX_VALID); 1085 1086 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1087 1088 sc->prioq.queued--; 1089 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1090 1091 if (m->m_flags & M_TXCB) 1092 ieee80211_process_callback(ni, m, 1093 (flags & RT2560_TX_RESULT_MASK) &~ 1094 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1095 m_freem(m); 1096 ieee80211_free_node(ni); 1097 } 1098 1099 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1100 BUS_DMASYNC_PREWRITE); 1101 1102 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1103 sc->sc_tx_timer = 0; 1104 1105 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1106 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1107 if ((sc->sc_flags & 1108 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1109 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1110 rt2560_start_locked(ifp); 1111 } 1112} 1113 1114/* 1115 * Some frames were processed by the hardware cipher engine and are ready for 1116 * handoff to the IEEE802.11 layer. 1117 */ 1118static void 1119rt2560_decryption_intr(struct rt2560_softc *sc) 1120{ 1121 struct ifnet *ifp = sc->sc_ifp; 1122 struct ieee80211com *ic = ifp->if_l2com; 1123 struct rt2560_rx_desc *desc; 1124 struct rt2560_rx_data *data; 1125 bus_addr_t physaddr; 1126 struct ieee80211_frame *wh; 1127 struct ieee80211_node *ni; 1128 struct mbuf *mnew, *m; 1129 int hw, error; 1130 int8_t rssi, nf; 1131 1132 /* retrieve last decriptor index processed by cipher engine */ 1133 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1134 hw /= RT2560_RX_DESC_SIZE; 1135 1136 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1137 BUS_DMASYNC_POSTREAD); 1138 1139 for (; sc->rxq.cur_decrypt != hw;) { 1140 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1141 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1142 1143 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1144 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1145 break; 1146 1147 if (data->drop) { 1148 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1149 goto skip; 1150 } 1151 1152 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1153 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1154 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1155 goto skip; 1156 } 1157 1158 /* 1159 * Try to allocate a new mbuf for this ring element and load it 1160 * before processing the current mbuf. If the ring element 1161 * cannot be loaded, drop the received packet and reuse the old 1162 * mbuf. In the unlikely case that the old mbuf can't be 1163 * reloaded either, explicitly panic. 1164 */ 1165 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1166 if (mnew == NULL) { 1167 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1168 goto skip; 1169 } 1170 1171 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1172 BUS_DMASYNC_POSTREAD); 1173 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1174 1175 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1176 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1177 &physaddr, 0); 1178 if (error != 0) { 1179 m_freem(mnew); 1180 1181 /* try to reload the old mbuf */ 1182 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1183 mtod(data->m, void *), MCLBYTES, 1184 rt2560_dma_map_addr, &physaddr, 0); 1185 if (error != 0) { 1186 /* very unlikely that it will fail... */ 1187 panic("%s: could not load old rx mbuf", 1188 device_get_name(sc->sc_dev)); 1189 } 1190 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1191 goto skip; 1192 } 1193 1194 /* 1195 * New mbuf successfully loaded, update Rx ring and continue 1196 * processing. 1197 */ 1198 m = data->m; 1199 data->m = mnew; 1200 desc->physaddr = htole32(physaddr); 1201 1202 /* finalize mbuf */ 1203 m->m_pkthdr.rcvif = ifp; 1204 m->m_pkthdr.len = m->m_len = 1205 (le32toh(desc->flags) >> 16) & 0xfff; 1206 1207 rssi = RT2560_RSSI(sc, desc->rssi); 1208 nf = RT2560_NOISE_FLOOR; 1209 if (ieee80211_radiotap_active(ic)) { 1210 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1211 uint32_t tsf_lo, tsf_hi; 1212 1213 /* get timestamp (low and high 32 bits) */ 1214 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1215 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1216 1217 tap->wr_tsf = 1218 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1219 tap->wr_flags = 0; 1220 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1221 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1222 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1223 tap->wr_antenna = sc->rx_ant; 1224 tap->wr_antsignal = nf + rssi; 1225 tap->wr_antnoise = nf; 1226 } 1227 1228 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1229 RAL_UNLOCK(sc); 1230 wh = mtod(m, struct ieee80211_frame *); 1231 ni = ieee80211_find_rxnode(ic, 1232 (struct ieee80211_frame_min *)wh); 1233 if (ni != NULL) { 1234 (void) ieee80211_input(ni, m, rssi, nf); 1235 ieee80211_free_node(ni); 1236 } else 1237 (void) ieee80211_input_all(ic, m, rssi, nf); 1238 1239 RAL_LOCK(sc); 1240 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1241skip: desc->flags = htole32(RT2560_RX_BUSY); 1242 1243 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1244 1245 sc->rxq.cur_decrypt = 1246 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1247 } 1248 1249 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1250 BUS_DMASYNC_PREWRITE); 1251} 1252 1253/* 1254 * Some frames were received. Pass them to the hardware cipher engine before 1255 * sending them to the 802.11 layer. 1256 */ 1257static void 1258rt2560_rx_intr(struct rt2560_softc *sc) 1259{ 1260 struct rt2560_rx_desc *desc; 1261 struct rt2560_rx_data *data; 1262 1263 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1264 BUS_DMASYNC_POSTREAD); 1265 1266 for (;;) { 1267 desc = &sc->rxq.desc[sc->rxq.cur]; 1268 data = &sc->rxq.data[sc->rxq.cur]; 1269 1270 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1271 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1272 break; 1273 1274 data->drop = 0; 1275 1276 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1277 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1278 /* 1279 * This should not happen since we did not request 1280 * to receive those frames when we filled RXCSR0. 1281 */ 1282 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1283 le32toh(desc->flags)); 1284 data->drop = 1; 1285 } 1286 1287 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1288 DPRINTFN(sc, 5, "%s\n", "bad length"); 1289 data->drop = 1; 1290 } 1291 1292 /* mark the frame for decryption */ 1293 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1294 1295 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1296 1297 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1298 } 1299 1300 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1301 BUS_DMASYNC_PREWRITE); 1302 1303 /* kick decrypt */ 1304 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1305} 1306 1307static void 1308rt2560_beacon_update(struct ieee80211vap *vap, int item) 1309{ 1310 struct rt2560_vap *rvp = RT2560_VAP(vap); 1311 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1312 1313 setbit(bo->bo_flags, item); 1314} 1315 1316/* 1317 * This function is called periodically in IBSS mode when a new beacon must be 1318 * sent out. 1319 */ 1320static void 1321rt2560_beacon_expire(struct rt2560_softc *sc) 1322{ 1323 struct ifnet *ifp = sc->sc_ifp; 1324 struct ieee80211com *ic = ifp->if_l2com; 1325 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1326 struct rt2560_vap *rvp = RT2560_VAP(vap); 1327 struct rt2560_tx_data *data; 1328 1329 if (ic->ic_opmode != IEEE80211_M_IBSS && 1330 ic->ic_opmode != IEEE80211_M_HOSTAP && 1331 ic->ic_opmode != IEEE80211_M_MBSS) 1332 return; 1333 1334 data = &sc->bcnq.data[sc->bcnq.next]; 1335 /* 1336 * Don't send beacon if bsschan isn't set 1337 */ 1338 if (data->ni == NULL) 1339 return; 1340 1341 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1342 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1343 1344 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1345 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1346 1347 rt2560_tx_bcn(sc, data->m, data->ni); 1348 1349 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1350 1351 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1352} 1353 1354/* ARGSUSED */ 1355static void 1356rt2560_wakeup_expire(struct rt2560_softc *sc) 1357{ 1358 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1359} 1360 1361void 1362rt2560_intr(void *arg) 1363{ 1364 struct rt2560_softc *sc = arg; 1365 struct ifnet *ifp = sc->sc_ifp; 1366 uint32_t r; 1367 1368 RAL_LOCK(sc); 1369 1370 /* disable interrupts */ 1371 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1372 1373 /* don't re-enable interrupts if we're shutting down */ 1374 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1375 RAL_UNLOCK(sc); 1376 return; 1377 } 1378 1379 r = RAL_READ(sc, RT2560_CSR7); 1380 RAL_WRITE(sc, RT2560_CSR7, r); 1381 1382 if (r & RT2560_BEACON_EXPIRE) 1383 rt2560_beacon_expire(sc); 1384 1385 if (r & RT2560_WAKEUP_EXPIRE) 1386 rt2560_wakeup_expire(sc); 1387 1388 if (r & RT2560_ENCRYPTION_DONE) 1389 rt2560_encryption_intr(sc); 1390 1391 if (r & RT2560_TX_DONE) 1392 rt2560_tx_intr(sc); 1393 1394 if (r & RT2560_PRIO_DONE) 1395 rt2560_prio_intr(sc); 1396 1397 if (r & RT2560_DECRYPTION_DONE) 1398 rt2560_decryption_intr(sc); 1399 1400 if (r & RT2560_RX_DONE) { 1401 rt2560_rx_intr(sc); 1402 rt2560_encryption_intr(sc); 1403 } 1404 1405 /* re-enable interrupts */ 1406 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1407 1408 RAL_UNLOCK(sc); 1409} 1410 1411#define RAL_SIFS 10 /* us */ 1412 1413#define RT2560_TXRX_TURNAROUND 10 /* us */ 1414 1415static uint8_t 1416rt2560_plcp_signal(int rate) 1417{ 1418 switch (rate) { 1419 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1420 case 12: return 0xb; 1421 case 18: return 0xf; 1422 case 24: return 0xa; 1423 case 36: return 0xe; 1424 case 48: return 0x9; 1425 case 72: return 0xd; 1426 case 96: return 0x8; 1427 case 108: return 0xc; 1428 1429 /* CCK rates (NB: not IEEE std, device-specific) */ 1430 case 2: return 0x0; 1431 case 4: return 0x1; 1432 case 11: return 0x2; 1433 case 22: return 0x3; 1434 } 1435 return 0xff; /* XXX unsupported/unknown rate */ 1436} 1437 1438static void 1439rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1440 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1441{ 1442 struct ifnet *ifp = sc->sc_ifp; 1443 struct ieee80211com *ic = ifp->if_l2com; 1444 uint16_t plcp_length; 1445 int remainder; 1446 1447 desc->flags = htole32(flags); 1448 desc->flags |= htole32(len << 16); 1449 1450 desc->physaddr = htole32(physaddr); 1451 desc->wme = htole16( 1452 RT2560_AIFSN(2) | 1453 RT2560_LOGCWMIN(3) | 1454 RT2560_LOGCWMAX(8)); 1455 1456 /* setup PLCP fields */ 1457 desc->plcp_signal = rt2560_plcp_signal(rate); 1458 desc->plcp_service = 4; 1459 1460 len += IEEE80211_CRC_LEN; 1461 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1462 desc->flags |= htole32(RT2560_TX_OFDM); 1463 1464 plcp_length = len & 0xfff; 1465 desc->plcp_length_hi = plcp_length >> 6; 1466 desc->plcp_length_lo = plcp_length & 0x3f; 1467 } else { 1468 plcp_length = (16 * len + rate - 1) / rate; 1469 if (rate == 22) { 1470 remainder = (16 * len) % 22; 1471 if (remainder != 0 && remainder < 7) 1472 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1473 } 1474 desc->plcp_length_hi = plcp_length >> 8; 1475 desc->plcp_length_lo = plcp_length & 0xff; 1476 1477 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1478 desc->plcp_signal |= 0x08; 1479 } 1480 1481 if (!encrypt) 1482 desc->flags |= htole32(RT2560_TX_VALID); 1483 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1484 : htole32(RT2560_TX_BUSY); 1485} 1486 1487static int 1488rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1489 struct ieee80211_node *ni) 1490{ 1491 struct ieee80211vap *vap = ni->ni_vap; 1492 struct rt2560_tx_desc *desc; 1493 struct rt2560_tx_data *data; 1494 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1495 int nsegs, rate, error; 1496 1497 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1498 data = &sc->bcnq.data[sc->bcnq.cur]; 1499 1500 /* XXX maybe a separate beacon rate? */ 1501 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1502 1503 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1504 segs, &nsegs, BUS_DMA_NOWAIT); 1505 if (error != 0) { 1506 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1507 error); 1508 m_freem(m0); 1509 return error; 1510 } 1511 1512 if (ieee80211_radiotap_active_vap(vap)) { 1513 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1514 1515 tap->wt_flags = 0; 1516 tap->wt_rate = rate; 1517 tap->wt_antenna = sc->tx_ant; 1518 1519 ieee80211_radiotap_tx(vap, m0); 1520 } 1521 1522 data->m = m0; 1523 data->ni = ni; 1524 1525 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1526 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1527 1528 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1529 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1530 1531 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1532 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1533 BUS_DMASYNC_PREWRITE); 1534 1535 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1536 1537 return 0; 1538} 1539 1540static int 1541rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1542 struct ieee80211_node *ni) 1543{ 1544 struct ieee80211vap *vap = ni->ni_vap; 1545 struct ieee80211com *ic = ni->ni_ic; 1546 struct rt2560_tx_desc *desc; 1547 struct rt2560_tx_data *data; 1548 struct ieee80211_frame *wh; 1549 struct ieee80211_key *k; 1550 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1551 uint16_t dur; 1552 uint32_t flags = 0; 1553 int nsegs, rate, error; 1554 1555 desc = &sc->prioq.desc[sc->prioq.cur]; 1556 data = &sc->prioq.data[sc->prioq.cur]; 1557 1558 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1559 1560 wh = mtod(m0, struct ieee80211_frame *); 1561 1562 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1563 k = ieee80211_crypto_encap(ni, m0); 1564 if (k == NULL) { 1565 m_freem(m0); 1566 return ENOBUFS; 1567 } 1568 } 1569 1570 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1571 segs, &nsegs, 0); 1572 if (error != 0) { 1573 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1574 error); 1575 m_freem(m0); 1576 return error; 1577 } 1578 1579 if (ieee80211_radiotap_active_vap(vap)) { 1580 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1581 1582 tap->wt_flags = 0; 1583 tap->wt_rate = rate; 1584 tap->wt_antenna = sc->tx_ant; 1585 1586 ieee80211_radiotap_tx(vap, m0); 1587 } 1588 1589 data->m = m0; 1590 data->ni = ni; 1591 /* management frames are not taken into account for amrr */ 1592 data->rix = IEEE80211_FIXED_RATE_NONE; 1593 1594 wh = mtod(m0, struct ieee80211_frame *); 1595 1596 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1597 flags |= RT2560_TX_ACK; 1598 1599 dur = ieee80211_ack_duration(ic->ic_rt, 1600 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1601 *(uint16_t *)wh->i_dur = htole16(dur); 1602 1603 /* tell hardware to add timestamp for probe responses */ 1604 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1605 IEEE80211_FC0_TYPE_MGT && 1606 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1607 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1608 flags |= RT2560_TX_TIMESTAMP; 1609 } 1610 1611 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1612 segs->ds_addr); 1613 1614 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1615 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1616 BUS_DMASYNC_PREWRITE); 1617 1618 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1619 m0->m_pkthdr.len, sc->prioq.cur, rate); 1620 1621 /* kick prio */ 1622 sc->prioq.queued++; 1623 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1624 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1625 1626 return 0; 1627} 1628 1629static int 1630rt2560_sendprot(struct rt2560_softc *sc, 1631 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1632{ 1633 struct ieee80211com *ic = ni->ni_ic; 1634 const struct ieee80211_frame *wh; 1635 struct rt2560_tx_desc *desc; 1636 struct rt2560_tx_data *data; 1637 struct mbuf *mprot; 1638 int protrate, ackrate, pktlen, flags, isshort, error; 1639 uint16_t dur; 1640 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1641 int nsegs; 1642 1643 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1644 ("protection %d", prot)); 1645 1646 wh = mtod(m, const struct ieee80211_frame *); 1647 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1648 1649 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1650 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1651 1652 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1653 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1654 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1655 flags = RT2560_TX_MORE_FRAG; 1656 if (prot == IEEE80211_PROT_RTSCTS) { 1657 /* NB: CTS is the same size as an ACK */ 1658 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1659 flags |= RT2560_TX_ACK; 1660 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1661 } else { 1662 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1663 } 1664 if (mprot == NULL) { 1665 /* XXX stat + msg */ 1666 return ENOBUFS; 1667 } 1668 1669 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1670 data = &sc->txq.data[sc->txq.cur_encrypt]; 1671 1672 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1673 mprot, segs, &nsegs, 0); 1674 if (error != 0) { 1675 device_printf(sc->sc_dev, 1676 "could not map mbuf (error %d)\n", error); 1677 m_freem(mprot); 1678 return error; 1679 } 1680 1681 data->m = mprot; 1682 data->ni = ieee80211_ref_node(ni); 1683 /* ctl frames are not taken into account for amrr */ 1684 data->rix = IEEE80211_FIXED_RATE_NONE; 1685 1686 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1687 segs->ds_addr); 1688 1689 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1690 BUS_DMASYNC_PREWRITE); 1691 1692 sc->txq.queued++; 1693 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1694 1695 return 0; 1696} 1697 1698static int 1699rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1700 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1701{ 1702 struct ieee80211vap *vap = ni->ni_vap; 1703 struct ieee80211com *ic = ni->ni_ic; 1704 struct rt2560_tx_desc *desc; 1705 struct rt2560_tx_data *data; 1706 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1707 uint32_t flags; 1708 int nsegs, rate, error; 1709 1710 desc = &sc->prioq.desc[sc->prioq.cur]; 1711 data = &sc->prioq.data[sc->prioq.cur]; 1712 1713 rate = params->ibp_rate0; 1714 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1715 /* XXX fall back to mcast/mgmt rate? */ 1716 m_freem(m0); 1717 return EINVAL; 1718 } 1719 1720 flags = 0; 1721 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1722 flags |= RT2560_TX_ACK; 1723 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1724 error = rt2560_sendprot(sc, m0, ni, 1725 params->ibp_flags & IEEE80211_BPF_RTS ? 1726 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1727 rate); 1728 if (error) { 1729 m_freem(m0); 1730 return error; 1731 } 1732 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1733 } 1734 1735 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1736 segs, &nsegs, 0); 1737 if (error != 0) { 1738 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1739 error); 1740 m_freem(m0); 1741 return error; 1742 } 1743 1744 if (ieee80211_radiotap_active_vap(vap)) { 1745 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1746 1747 tap->wt_flags = 0; 1748 tap->wt_rate = rate; 1749 tap->wt_antenna = sc->tx_ant; 1750 1751 ieee80211_radiotap_tx(ni->ni_vap, m0); 1752 } 1753 1754 data->m = m0; 1755 data->ni = ni; 1756 1757 /* XXX need to setup descriptor ourself */ 1758 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1759 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1760 segs->ds_addr); 1761 1762 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1763 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1764 BUS_DMASYNC_PREWRITE); 1765 1766 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1767 m0->m_pkthdr.len, sc->prioq.cur, rate); 1768 1769 /* kick prio */ 1770 sc->prioq.queued++; 1771 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1772 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1773 1774 return 0; 1775} 1776 1777static int 1778rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1779 struct ieee80211_node *ni) 1780{ 1781 struct ieee80211vap *vap = ni->ni_vap; 1782 struct ieee80211com *ic = ni->ni_ic; 1783 struct rt2560_tx_desc *desc; 1784 struct rt2560_tx_data *data; 1785 struct ieee80211_frame *wh; 1786 const struct ieee80211_txparam *tp; 1787 struct ieee80211_key *k; 1788 struct mbuf *mnew; 1789 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1790 uint16_t dur; 1791 uint32_t flags; 1792 int nsegs, rate, error; 1793 1794 wh = mtod(m0, struct ieee80211_frame *); 1795 1796 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1797 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1798 rate = tp->mcastrate; 1799 } else if (m0->m_flags & M_EAPOL) { 1800 rate = tp->mgmtrate; 1801 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1802 rate = tp->ucastrate; 1803 } else { 1804 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1805 rate = ni->ni_txrate; 1806 } 1807 1808 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1809 k = ieee80211_crypto_encap(ni, m0); 1810 if (k == NULL) { 1811 m_freem(m0); 1812 return ENOBUFS; 1813 } 1814 1815 /* packet header may have moved, reset our local pointer */ 1816 wh = mtod(m0, struct ieee80211_frame *); 1817 } 1818 1819 flags = 0; 1820 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1821 int prot = IEEE80211_PROT_NONE; 1822 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1823 prot = IEEE80211_PROT_RTSCTS; 1824 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1825 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1826 prot = ic->ic_protmode; 1827 if (prot != IEEE80211_PROT_NONE) { 1828 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1829 if (error) { 1830 m_freem(m0); 1831 return error; 1832 } 1833 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1834 } 1835 } 1836 1837 data = &sc->txq.data[sc->txq.cur_encrypt]; 1838 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1839 1840 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1841 segs, &nsegs, 0); 1842 if (error != 0 && error != EFBIG) { 1843 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1844 error); 1845 m_freem(m0); 1846 return error; 1847 } 1848 if (error != 0) { 1849 mnew = m_defrag(m0, M_NOWAIT); 1850 if (mnew == NULL) { 1851 device_printf(sc->sc_dev, 1852 "could not defragment mbuf\n"); 1853 m_freem(m0); 1854 return ENOBUFS; 1855 } 1856 m0 = mnew; 1857 1858 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1859 m0, segs, &nsegs, 0); 1860 if (error != 0) { 1861 device_printf(sc->sc_dev, 1862 "could not map mbuf (error %d)\n", error); 1863 m_freem(m0); 1864 return error; 1865 } 1866 1867 /* packet header may have moved, reset our local pointer */ 1868 wh = mtod(m0, struct ieee80211_frame *); 1869 } 1870 1871 if (ieee80211_radiotap_active_vap(vap)) { 1872 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1873 1874 tap->wt_flags = 0; 1875 tap->wt_rate = rate; 1876 tap->wt_antenna = sc->tx_ant; 1877 1878 ieee80211_radiotap_tx(vap, m0); 1879 } 1880 1881 data->m = m0; 1882 data->ni = ni; 1883 1884 /* remember link conditions for rate adaptation algorithm */ 1885 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1886 data->rix = ni->ni_txrate; 1887 /* XXX probably need last rssi value and not avg */ 1888 data->rssi = ic->ic_node_getrssi(ni); 1889 } else 1890 data->rix = IEEE80211_FIXED_RATE_NONE; 1891 1892 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1893 flags |= RT2560_TX_ACK; 1894 1895 dur = ieee80211_ack_duration(ic->ic_rt, 1896 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1897 *(uint16_t *)wh->i_dur = htole16(dur); 1898 } 1899 1900 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1901 segs->ds_addr); 1902 1903 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1904 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1905 BUS_DMASYNC_PREWRITE); 1906 1907 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1908 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1909 1910 /* kick encrypt */ 1911 sc->txq.queued++; 1912 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1913 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1914 1915 return 0; 1916} 1917 1918static void 1919rt2560_start_locked(struct ifnet *ifp) 1920{ 1921 struct rt2560_softc *sc = ifp->if_softc; 1922 struct mbuf *m; 1923 struct ieee80211_node *ni; 1924 1925 RAL_LOCK_ASSERT(sc); 1926 1927 for (;;) { 1928 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1929 if (m == NULL) 1930 break; 1931 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1932 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1933 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1934 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1935 break; 1936 } 1937 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1938 if (rt2560_tx_data(sc, m, ni) != 0) { 1939 ieee80211_free_node(ni); 1940 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1941 break; 1942 } 1943 1944 sc->sc_tx_timer = 5; 1945 } 1946} 1947 1948static void 1949rt2560_start(struct ifnet *ifp) 1950{ 1951 struct rt2560_softc *sc = ifp->if_softc; 1952 1953 RAL_LOCK(sc); 1954 rt2560_start_locked(ifp); 1955 RAL_UNLOCK(sc); 1956} 1957 1958static void 1959rt2560_watchdog(void *arg) 1960{ 1961 struct rt2560_softc *sc = arg; 1962 struct ifnet *ifp = sc->sc_ifp; 1963 1964 RAL_LOCK_ASSERT(sc); 1965 1966 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1967 1968 if (sc->sc_invalid) /* card ejected */ 1969 return; 1970 1971 rt2560_encryption_intr(sc); 1972 rt2560_tx_intr(sc); 1973 1974 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1975 if_printf(ifp, "device timeout\n"); 1976 rt2560_init_locked(sc); 1977 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1978 /* NB: callout is reset in rt2560_init() */ 1979 return; 1980 } 1981 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1982} 1983 1984static int 1985rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1986{ 1987 struct rt2560_softc *sc = ifp->if_softc; 1988 struct ieee80211com *ic = ifp->if_l2com; 1989 struct ifreq *ifr = (struct ifreq *) data; 1990 int error = 0, startall = 0; 1991 1992 switch (cmd) { 1993 case SIOCSIFFLAGS: 1994 RAL_LOCK(sc); 1995 if (ifp->if_flags & IFF_UP) { 1996 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1997 rt2560_init_locked(sc); 1998 startall = 1; 1999 } else 2000 rt2560_update_promisc(ifp); 2001 } else { 2002 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2003 rt2560_stop_locked(sc); 2004 } 2005 RAL_UNLOCK(sc); 2006 if (startall) 2007 ieee80211_start_all(ic); 2008 break; 2009 case SIOCGIFMEDIA: 2010 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2011 break; 2012 case SIOCGIFADDR: 2013 error = ether_ioctl(ifp, cmd, data); 2014 break; 2015 default: 2016 error = EINVAL; 2017 break; 2018 } 2019 return error; 2020} 2021 2022static void 2023rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2024{ 2025 uint32_t tmp; 2026 int ntries; 2027 2028 for (ntries = 0; ntries < 100; ntries++) { 2029 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2030 break; 2031 DELAY(1); 2032 } 2033 if (ntries == 100) { 2034 device_printf(sc->sc_dev, "could not write to BBP\n"); 2035 return; 2036 } 2037 2038 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2039 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2040 2041 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2042} 2043 2044static uint8_t 2045rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2046{ 2047 uint32_t val; 2048 int ntries; 2049 2050 for (ntries = 0; ntries < 100; ntries++) { 2051 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2052 break; 2053 DELAY(1); 2054 } 2055 if (ntries == 100) { 2056 device_printf(sc->sc_dev, "could not read from BBP\n"); 2057 return 0; 2058 } 2059 2060 val = RT2560_BBP_BUSY | reg << 8; 2061 RAL_WRITE(sc, RT2560_BBPCSR, val); 2062 2063 for (ntries = 0; ntries < 100; ntries++) { 2064 val = RAL_READ(sc, RT2560_BBPCSR); 2065 if (!(val & RT2560_BBP_BUSY)) 2066 return val & 0xff; 2067 DELAY(1); 2068 } 2069 2070 device_printf(sc->sc_dev, "could not read from BBP\n"); 2071 return 0; 2072} 2073 2074static void 2075rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2076{ 2077 uint32_t tmp; 2078 int ntries; 2079 2080 for (ntries = 0; ntries < 100; ntries++) { 2081 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2082 break; 2083 DELAY(1); 2084 } 2085 if (ntries == 100) { 2086 device_printf(sc->sc_dev, "could not write to RF\n"); 2087 return; 2088 } 2089 2090 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2091 (reg & 0x3); 2092 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2093 2094 /* remember last written value in sc */ 2095 sc->rf_regs[reg] = val; 2096 2097 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2098} 2099 2100static void 2101rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2102{ 2103 struct ifnet *ifp = sc->sc_ifp; 2104 struct ieee80211com *ic = ifp->if_l2com; 2105 uint8_t power, tmp; 2106 u_int i, chan; 2107 2108 chan = ieee80211_chan2ieee(ic, c); 2109 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2110 2111 if (IEEE80211_IS_CHAN_2GHZ(c)) 2112 power = min(sc->txpow[chan - 1], 31); 2113 else 2114 power = 31; 2115 2116 /* adjust txpower using ifconfig settings */ 2117 power -= (100 - ic->ic_txpowlimit) / 8; 2118 2119 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2120 2121 switch (sc->rf_rev) { 2122 case RT2560_RF_2522: 2123 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2124 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2125 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2126 break; 2127 2128 case RT2560_RF_2523: 2129 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2130 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2131 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2132 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2133 break; 2134 2135 case RT2560_RF_2524: 2136 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2137 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2138 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2139 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2140 break; 2141 2142 case RT2560_RF_2525: 2143 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2144 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2145 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2146 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2147 2148 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2149 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2150 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2151 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2152 break; 2153 2154 case RT2560_RF_2525E: 2155 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2156 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2157 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2158 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2159 break; 2160 2161 case RT2560_RF_2526: 2162 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2163 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2164 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2165 2166 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2167 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2168 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2169 break; 2170 2171 /* dual-band RF */ 2172 case RT2560_RF_5222: 2173 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2174 2175 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2176 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2177 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2178 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2179 break; 2180 default: 2181 printf("unknown ral rev=%d\n", sc->rf_rev); 2182 } 2183 2184 /* XXX */ 2185 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2186 /* set Japan filter bit for channel 14 */ 2187 tmp = rt2560_bbp_read(sc, 70); 2188 2189 tmp &= ~RT2560_JAPAN_FILTER; 2190 if (chan == 14) 2191 tmp |= RT2560_JAPAN_FILTER; 2192 2193 rt2560_bbp_write(sc, 70, tmp); 2194 2195 /* clear CRC errors */ 2196 RAL_READ(sc, RT2560_CNT0); 2197 } 2198} 2199 2200static void 2201rt2560_set_channel(struct ieee80211com *ic) 2202{ 2203 struct ifnet *ifp = ic->ic_ifp; 2204 struct rt2560_softc *sc = ifp->if_softc; 2205 2206 RAL_LOCK(sc); 2207 rt2560_set_chan(sc, ic->ic_curchan); 2208 RAL_UNLOCK(sc); 2209 2210} 2211 2212#if 0 2213/* 2214 * Disable RF auto-tuning. 2215 */ 2216static void 2217rt2560_disable_rf_tune(struct rt2560_softc *sc) 2218{ 2219 uint32_t tmp; 2220 2221 if (sc->rf_rev != RT2560_RF_2523) { 2222 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2223 rt2560_rf_write(sc, RAL_RF1, tmp); 2224 } 2225 2226 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2227 rt2560_rf_write(sc, RAL_RF3, tmp); 2228 2229 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2230} 2231#endif 2232 2233/* 2234 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2235 * synchronization. 2236 */ 2237static void 2238rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2239{ 2240 struct ifnet *ifp = sc->sc_ifp; 2241 struct ieee80211com *ic = ifp->if_l2com; 2242 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2243 uint16_t logcwmin, preload; 2244 uint32_t tmp; 2245 2246 /* first, disable TSF synchronization */ 2247 RAL_WRITE(sc, RT2560_CSR14, 0); 2248 2249 tmp = 16 * vap->iv_bss->ni_intval; 2250 RAL_WRITE(sc, RT2560_CSR12, tmp); 2251 2252 RAL_WRITE(sc, RT2560_CSR13, 0); 2253 2254 logcwmin = 5; 2255 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2256 tmp = logcwmin << 16 | preload; 2257 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2258 2259 /* finally, enable TSF synchronization */ 2260 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2261 if (ic->ic_opmode == IEEE80211_M_STA) 2262 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2263 else 2264 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2265 RT2560_ENABLE_BEACON_GENERATOR; 2266 RAL_WRITE(sc, RT2560_CSR14, tmp); 2267 2268 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2269} 2270 2271static void 2272rt2560_enable_tsf(struct rt2560_softc *sc) 2273{ 2274 RAL_WRITE(sc, RT2560_CSR14, 0); 2275 RAL_WRITE(sc, RT2560_CSR14, 2276 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2277} 2278 2279static void 2280rt2560_update_plcp(struct rt2560_softc *sc) 2281{ 2282 struct ifnet *ifp = sc->sc_ifp; 2283 struct ieee80211com *ic = ifp->if_l2com; 2284 2285 /* no short preamble for 1Mbps */ 2286 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2287 2288 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2289 /* values taken from the reference driver */ 2290 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2291 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2292 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2293 } else { 2294 /* same values as above or'ed 0x8 */ 2295 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2296 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2297 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2298 } 2299 2300 DPRINTF(sc, "updating PLCP for %s preamble\n", 2301 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2302} 2303 2304/* 2305 * This function can be called by ieee80211_set_shortslottime(). Refer to 2306 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2307 */ 2308static void 2309rt2560_update_slot(struct ifnet *ifp) 2310{ 2311 struct rt2560_softc *sc = ifp->if_softc; 2312 struct ieee80211com *ic = ifp->if_l2com; 2313 uint8_t slottime; 2314 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2315 uint32_t tmp; 2316 2317#ifndef FORCE_SLOTTIME 2318 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2319#else 2320 /* 2321 * Setting slot time according to "short slot time" capability 2322 * in beacon/probe_resp seems to cause problem to acknowledge 2323 * certain AP's data frames transimitted at CCK/DS rates: the 2324 * problematic AP keeps retransmitting data frames, probably 2325 * because MAC level acks are not received by hardware. 2326 * So we cheat a little bit here by claiming we are capable of 2327 * "short slot time" but setting hardware slot time to the normal 2328 * slot time. ral(4) does not seem to have trouble to receive 2329 * frames transmitted using short slot time even if hardware 2330 * slot time is set to normal slot time. If we didn't use this 2331 * trick, we would have to claim that short slot time is not 2332 * supported; this would give relative poor RX performance 2333 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2334 * slot time. 2335 */ 2336 slottime = 20; 2337#endif 2338 2339 /* update the MAC slot boundaries */ 2340 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2341 tx_pifs = tx_sifs + slottime; 2342 tx_difs = tx_sifs + 2 * slottime; 2343 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2344 2345 tmp = RAL_READ(sc, RT2560_CSR11); 2346 tmp = (tmp & ~0x1f00) | slottime << 8; 2347 RAL_WRITE(sc, RT2560_CSR11, tmp); 2348 2349 tmp = tx_pifs << 16 | tx_sifs; 2350 RAL_WRITE(sc, RT2560_CSR18, tmp); 2351 2352 tmp = eifs << 16 | tx_difs; 2353 RAL_WRITE(sc, RT2560_CSR19, tmp); 2354 2355 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2356} 2357 2358static void 2359rt2560_set_basicrates(struct rt2560_softc *sc, 2360 const struct ieee80211_rateset *rs) 2361{ 2362#define RV(r) ((r) & IEEE80211_RATE_VAL) 2363 struct ifnet *ifp = sc->sc_ifp; 2364 struct ieee80211com *ic = ifp->if_l2com; 2365 uint32_t mask = 0; 2366 uint8_t rate; 2367 int i; 2368 2369 for (i = 0; i < rs->rs_nrates; i++) { 2370 rate = rs->rs_rates[i]; 2371 2372 if (!(rate & IEEE80211_RATE_BASIC)) 2373 continue; 2374 2375 mask |= 1 << ieee80211_legacy_rate_lookup(ic->ic_rt, RV(rate)); 2376 } 2377 2378 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, mask); 2379 2380 DPRINTF(sc, "Setting basic rate mask to 0x%x\n", mask); 2381#undef RV 2382} 2383 2384static void 2385rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2386{ 2387 uint32_t tmp; 2388 2389 /* set ON period to 70ms and OFF period to 30ms */ 2390 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2391 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2392} 2393 2394static void 2395rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2396{ 2397 uint32_t tmp; 2398 2399 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2400 RAL_WRITE(sc, RT2560_CSR5, tmp); 2401 2402 tmp = bssid[4] | bssid[5] << 8; 2403 RAL_WRITE(sc, RT2560_CSR6, tmp); 2404 2405 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2406} 2407 2408static void 2409rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2410{ 2411 uint32_t tmp; 2412 2413 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2414 RAL_WRITE(sc, RT2560_CSR3, tmp); 2415 2416 tmp = addr[4] | addr[5] << 8; 2417 RAL_WRITE(sc, RT2560_CSR4, tmp); 2418 2419 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2420} 2421 2422static void 2423rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2424{ 2425 uint32_t tmp; 2426 2427 tmp = RAL_READ(sc, RT2560_CSR3); 2428 addr[0] = tmp & 0xff; 2429 addr[1] = (tmp >> 8) & 0xff; 2430 addr[2] = (tmp >> 16) & 0xff; 2431 addr[3] = (tmp >> 24); 2432 2433 tmp = RAL_READ(sc, RT2560_CSR4); 2434 addr[4] = tmp & 0xff; 2435 addr[5] = (tmp >> 8) & 0xff; 2436} 2437 2438static void 2439rt2560_update_promisc(struct ifnet *ifp) 2440{ 2441 struct rt2560_softc *sc = ifp->if_softc; 2442 uint32_t tmp; 2443 2444 tmp = RAL_READ(sc, RT2560_RXCSR0); 2445 2446 tmp &= ~RT2560_DROP_NOT_TO_ME; 2447 if (!(ifp->if_flags & IFF_PROMISC)) 2448 tmp |= RT2560_DROP_NOT_TO_ME; 2449 2450 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2451 2452 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2453 "entering" : "leaving"); 2454} 2455 2456static const char * 2457rt2560_get_rf(int rev) 2458{ 2459 switch (rev) { 2460 case RT2560_RF_2522: return "RT2522"; 2461 case RT2560_RF_2523: return "RT2523"; 2462 case RT2560_RF_2524: return "RT2524"; 2463 case RT2560_RF_2525: return "RT2525"; 2464 case RT2560_RF_2525E: return "RT2525e"; 2465 case RT2560_RF_2526: return "RT2526"; 2466 case RT2560_RF_5222: return "RT5222"; 2467 default: return "unknown"; 2468 } 2469} 2470 2471static void 2472rt2560_read_config(struct rt2560_softc *sc) 2473{ 2474 uint16_t val; 2475 int i; 2476 2477 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2478 sc->rf_rev = (val >> 11) & 0x7; 2479 sc->hw_radio = (val >> 10) & 0x1; 2480 sc->led_mode = (val >> 6) & 0x7; 2481 sc->rx_ant = (val >> 4) & 0x3; 2482 sc->tx_ant = (val >> 2) & 0x3; 2483 sc->nb_ant = val & 0x3; 2484 2485 /* read default values for BBP registers */ 2486 for (i = 0; i < 16; i++) { 2487 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2488 if (val == 0 || val == 0xffff) 2489 continue; 2490 2491 sc->bbp_prom[i].reg = val >> 8; 2492 sc->bbp_prom[i].val = val & 0xff; 2493 } 2494 2495 /* read Tx power for all b/g channels */ 2496 for (i = 0; i < 14 / 2; i++) { 2497 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2498 sc->txpow[i * 2] = val & 0xff; 2499 sc->txpow[i * 2 + 1] = val >> 8; 2500 } 2501 for (i = 0; i < 14; ++i) { 2502 if (sc->txpow[i] > 31) 2503 sc->txpow[i] = 24; 2504 } 2505 2506 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2507 if ((val & 0xff) == 0xff) 2508 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2509 else 2510 sc->rssi_corr = val & 0xff; 2511 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2512 sc->rssi_corr, val); 2513} 2514 2515 2516static void 2517rt2560_scan_start(struct ieee80211com *ic) 2518{ 2519 struct ifnet *ifp = ic->ic_ifp; 2520 struct rt2560_softc *sc = ifp->if_softc; 2521 2522 /* abort TSF synchronization */ 2523 RAL_WRITE(sc, RT2560_CSR14, 0); 2524 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2525} 2526 2527static void 2528rt2560_scan_end(struct ieee80211com *ic) 2529{ 2530 struct ifnet *ifp = ic->ic_ifp; 2531 struct rt2560_softc *sc = ifp->if_softc; 2532 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2533 2534 rt2560_enable_tsf_sync(sc); 2535 /* XXX keep local copy */ 2536 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2537} 2538 2539static int 2540rt2560_bbp_init(struct rt2560_softc *sc) 2541{ 2542#define N(a) (sizeof (a) / sizeof ((a)[0])) 2543 int i, ntries; 2544 2545 /* wait for BBP to be ready */ 2546 for (ntries = 0; ntries < 100; ntries++) { 2547 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2548 break; 2549 DELAY(1); 2550 } 2551 if (ntries == 100) { 2552 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2553 return EIO; 2554 } 2555 2556 /* initialize BBP registers to default values */ 2557 for (i = 0; i < N(rt2560_def_bbp); i++) { 2558 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2559 rt2560_def_bbp[i].val); 2560 } 2561 2562 /* initialize BBP registers to values stored in EEPROM */ 2563 for (i = 0; i < 16; i++) { 2564 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2565 break; 2566 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2567 } 2568 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2569 2570 return 0; 2571#undef N 2572} 2573 2574static void 2575rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2576{ 2577 uint32_t tmp; 2578 uint8_t tx; 2579 2580 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2581 if (antenna == 1) 2582 tx |= RT2560_BBP_ANTA; 2583 else if (antenna == 2) 2584 tx |= RT2560_BBP_ANTB; 2585 else 2586 tx |= RT2560_BBP_DIVERSITY; 2587 2588 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2589 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2590 sc->rf_rev == RT2560_RF_5222) 2591 tx |= RT2560_BBP_FLIPIQ; 2592 2593 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2594 2595 /* update values for CCK and OFDM in BBPCSR1 */ 2596 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2597 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2598 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2599} 2600 2601static void 2602rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2603{ 2604 uint8_t rx; 2605 2606 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2607 if (antenna == 1) 2608 rx |= RT2560_BBP_ANTA; 2609 else if (antenna == 2) 2610 rx |= RT2560_BBP_ANTB; 2611 else 2612 rx |= RT2560_BBP_DIVERSITY; 2613 2614 /* need to force no I/Q flip for RF 2525e and 2526 */ 2615 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2616 rx &= ~RT2560_BBP_FLIPIQ; 2617 2618 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2619} 2620 2621static void 2622rt2560_init_locked(struct rt2560_softc *sc) 2623{ 2624#define N(a) (sizeof (a) / sizeof ((a)[0])) 2625 struct ifnet *ifp = sc->sc_ifp; 2626 struct ieee80211com *ic = ifp->if_l2com; 2627 uint32_t tmp; 2628 int i; 2629 2630 RAL_LOCK_ASSERT(sc); 2631 2632 rt2560_stop_locked(sc); 2633 2634 /* setup tx rings */ 2635 tmp = RT2560_PRIO_RING_COUNT << 24 | 2636 RT2560_ATIM_RING_COUNT << 16 | 2637 RT2560_TX_RING_COUNT << 8 | 2638 RT2560_TX_DESC_SIZE; 2639 2640 /* rings must be initialized in this exact order */ 2641 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2642 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2643 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2644 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2645 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2646 2647 /* setup rx ring */ 2648 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2649 2650 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2651 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2652 2653 /* initialize MAC registers to default values */ 2654 for (i = 0; i < N(rt2560_def_mac); i++) 2655 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2656 2657 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2658 2659 /* set basic rate set (will be updated later) */ 2660 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2661 2662 rt2560_update_slot(ifp); 2663 rt2560_update_plcp(sc); 2664 rt2560_update_led(sc, 0, 0); 2665 2666 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2667 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2668 2669 if (rt2560_bbp_init(sc) != 0) { 2670 rt2560_stop_locked(sc); 2671 return; 2672 } 2673 2674 rt2560_set_txantenna(sc, sc->tx_ant); 2675 rt2560_set_rxantenna(sc, sc->rx_ant); 2676 2677 /* set default BSS channel */ 2678 rt2560_set_chan(sc, ic->ic_curchan); 2679 2680 /* kick Rx */ 2681 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2682 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2683 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2684 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2685 ic->ic_opmode != IEEE80211_M_MBSS) 2686 tmp |= RT2560_DROP_TODS; 2687 if (!(ifp->if_flags & IFF_PROMISC)) 2688 tmp |= RT2560_DROP_NOT_TO_ME; 2689 } 2690 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2691 2692 /* clear old FCS and Rx FIFO errors */ 2693 RAL_READ(sc, RT2560_CNT0); 2694 RAL_READ(sc, RT2560_CNT4); 2695 2696 /* clear any pending interrupts */ 2697 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2698 2699 /* enable interrupts */ 2700 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2701 2702 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2703 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2704 2705 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2706#undef N 2707} 2708 2709static void 2710rt2560_init(void *priv) 2711{ 2712 struct rt2560_softc *sc = priv; 2713 struct ifnet *ifp = sc->sc_ifp; 2714 struct ieee80211com *ic = ifp->if_l2com; 2715 2716 RAL_LOCK(sc); 2717 rt2560_init_locked(sc); 2718 RAL_UNLOCK(sc); 2719 2720 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2721 ieee80211_start_all(ic); /* start all vap's */ 2722} 2723 2724static void 2725rt2560_stop_locked(struct rt2560_softc *sc) 2726{ 2727 struct ifnet *ifp = sc->sc_ifp; 2728 volatile int *flags = &sc->sc_flags; 2729 2730 RAL_LOCK_ASSERT(sc); 2731 2732 while (*flags & RT2560_F_INPUT_RUNNING) 2733 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2734 2735 callout_stop(&sc->watchdog_ch); 2736 sc->sc_tx_timer = 0; 2737 2738 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2739 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2740 2741 /* abort Tx */ 2742 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2743 2744 /* disable Rx */ 2745 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2746 2747 /* reset ASIC (imply reset BBP) */ 2748 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2749 RAL_WRITE(sc, RT2560_CSR1, 0); 2750 2751 /* disable interrupts */ 2752 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2753 2754 /* reset Tx and Rx rings */ 2755 rt2560_reset_tx_ring(sc, &sc->txq); 2756 rt2560_reset_tx_ring(sc, &sc->atimq); 2757 rt2560_reset_tx_ring(sc, &sc->prioq); 2758 rt2560_reset_tx_ring(sc, &sc->bcnq); 2759 rt2560_reset_rx_ring(sc, &sc->rxq); 2760 } 2761 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2762} 2763 2764void 2765rt2560_stop(void *arg) 2766{ 2767 struct rt2560_softc *sc = arg; 2768 2769 RAL_LOCK(sc); 2770 rt2560_stop_locked(sc); 2771 RAL_UNLOCK(sc); 2772} 2773 2774static int 2775rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2776 const struct ieee80211_bpf_params *params) 2777{ 2778 struct ieee80211com *ic = ni->ni_ic; 2779 struct ifnet *ifp = ic->ic_ifp; 2780 struct rt2560_softc *sc = ifp->if_softc; 2781 2782 RAL_LOCK(sc); 2783 2784 /* prevent management frames from being sent if we're not ready */ 2785 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2786 RAL_UNLOCK(sc); 2787 m_freem(m); 2788 ieee80211_free_node(ni); 2789 return ENETDOWN; 2790 } 2791 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2792 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2793 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2794 RAL_UNLOCK(sc); 2795 m_freem(m); 2796 ieee80211_free_node(ni); 2797 return ENOBUFS; /* XXX */ 2798 } 2799 2800 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 2801 2802 if (params == NULL) { 2803 /* 2804 * Legacy path; interpret frame contents to decide 2805 * precisely how to send the frame. 2806 */ 2807 if (rt2560_tx_mgt(sc, m, ni) != 0) 2808 goto bad; 2809 } else { 2810 /* 2811 * Caller supplied explicit parameters to use in 2812 * sending the frame. 2813 */ 2814 if (rt2560_tx_raw(sc, m, ni, params)) 2815 goto bad; 2816 } 2817 sc->sc_tx_timer = 5; 2818 2819 RAL_UNLOCK(sc); 2820 2821 return 0; 2822bad: 2823 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 2824 ieee80211_free_node(ni); 2825 RAL_UNLOCK(sc); 2826 return EIO; /* XXX */ 2827} 2828