rt2560.c revision 206372
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 206372 2010-04-07 17:52:32Z rpaulo $ */ 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 206372 2010-04-07 17:52:32Z rpaulo $"); 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 void rt2560_newassoc(struct ieee80211_node *, int); 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 *); 149static void rt2560_update_led(struct rt2560_softc *, int, int); 150static void rt2560_set_bssid(struct rt2560_softc *, const uint8_t *); 151static void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 152static void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 153static void rt2560_update_promisc(struct ifnet *); 154static const char *rt2560_get_rf(int); 155static void rt2560_read_config(struct rt2560_softc *); 156static int rt2560_bbp_init(struct rt2560_softc *); 157static void rt2560_set_txantenna(struct rt2560_softc *, int); 158static void rt2560_set_rxantenna(struct rt2560_softc *, int); 159static void rt2560_init_locked(struct rt2560_softc *); 160static void rt2560_init(void *); 161static void rt2560_stop_locked(struct rt2560_softc *); 162static int rt2560_raw_xmit(struct ieee80211_node *, struct mbuf *, 163 const struct ieee80211_bpf_params *); 164 165static const struct { 166 uint32_t reg; 167 uint32_t val; 168} rt2560_def_mac[] = { 169 RT2560_DEF_MAC 170}; 171 172static const struct { 173 uint8_t reg; 174 uint8_t val; 175} rt2560_def_bbp[] = { 176 RT2560_DEF_BBP 177}; 178 179static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 180static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 181static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 182static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 183static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 184static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 185static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 186static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 187 188static const struct { 189 uint8_t chan; 190 uint32_t r1, r2, r4; 191} rt2560_rf5222[] = { 192 RT2560_RF5222 193}; 194 195int 196rt2560_attach(device_t dev, int id) 197{ 198 struct rt2560_softc *sc = device_get_softc(dev); 199 struct ieee80211com *ic; 200 struct ifnet *ifp; 201 int error; 202 uint8_t bands; 203 uint8_t macaddr[IEEE80211_ADDR_LEN]; 204 205 sc->sc_dev = dev; 206 207 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 208 MTX_DEF | MTX_RECURSE); 209 210 callout_init_mtx(&sc->watchdog_ch, &sc->sc_mtx, 0); 211 212 /* retrieve RT2560 rev. no */ 213 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 214 215 /* retrieve RF rev. no and various other things from EEPROM */ 216 rt2560_read_config(sc); 217 218 device_printf(dev, "MAC/BBP RT2560 (rev 0x%02x), RF %s\n", 219 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 220 221 /* 222 * Allocate Tx and Rx rings. 223 */ 224 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 225 if (error != 0) { 226 device_printf(sc->sc_dev, "could not allocate Tx ring\n"); 227 goto fail1; 228 } 229 230 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 231 if (error != 0) { 232 device_printf(sc->sc_dev, "could not allocate ATIM ring\n"); 233 goto fail2; 234 } 235 236 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 237 if (error != 0) { 238 device_printf(sc->sc_dev, "could not allocate Prio ring\n"); 239 goto fail3; 240 } 241 242 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 243 if (error != 0) { 244 device_printf(sc->sc_dev, "could not allocate Beacon ring\n"); 245 goto fail4; 246 } 247 248 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 249 if (error != 0) { 250 device_printf(sc->sc_dev, "could not allocate Rx ring\n"); 251 goto fail5; 252 } 253 254 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 255 if (ifp == NULL) { 256 device_printf(sc->sc_dev, "can not if_alloc()\n"); 257 goto fail6; 258 } 259 ic = ifp->if_l2com; 260 261 /* retrieve MAC address */ 262 rt2560_get_macaddr(sc, macaddr); 263 264 ifp->if_softc = sc; 265 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 266 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 267 ifp->if_init = rt2560_init; 268 ifp->if_ioctl = rt2560_ioctl; 269 ifp->if_start = rt2560_start; 270 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 271 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 272 IFQ_SET_READY(&ifp->if_snd); 273 274 ic->ic_ifp = ifp; 275 ic->ic_opmode = IEEE80211_M_STA; 276 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 277 278 /* set device capabilities */ 279 ic->ic_caps = 280 IEEE80211_C_STA /* station mode */ 281 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */ 282 | IEEE80211_C_HOSTAP /* hostap mode */ 283 | IEEE80211_C_MONITOR /* monitor mode */ 284 | IEEE80211_C_AHDEMO /* adhoc demo mode */ 285 | IEEE80211_C_WDS /* 4-address traffic works */ 286 | IEEE80211_C_MBSS /* mesh point link mode */ 287 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 288 | IEEE80211_C_SHSLOT /* short slot time supported */ 289 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 290 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 291#ifdef notyet 292 | IEEE80211_C_TXFRAG /* handle tx frags */ 293#endif 294 ; 295 296 bands = 0; 297 setbit(&bands, IEEE80211_MODE_11B); 298 setbit(&bands, IEEE80211_MODE_11G); 299 if (sc->rf_rev == RT2560_RF_5222) 300 setbit(&bands, IEEE80211_MODE_11A); 301 ieee80211_init_channels(ic, NULL, &bands); 302 303 ieee80211_ifattach(ic, macaddr); 304 ic->ic_newassoc = rt2560_newassoc; 305 ic->ic_raw_xmit = rt2560_raw_xmit; 306 ic->ic_updateslot = rt2560_update_slot; 307 ic->ic_update_promisc = rt2560_update_promisc; 308 ic->ic_scan_start = rt2560_scan_start; 309 ic->ic_scan_end = rt2560_scan_end; 310 ic->ic_set_channel = rt2560_set_channel; 311 312 ic->ic_vap_create = rt2560_vap_create; 313 ic->ic_vap_delete = rt2560_vap_delete; 314 315 ieee80211_radiotap_attach(ic, 316 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 317 RT2560_TX_RADIOTAP_PRESENT, 318 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 319 RT2560_RX_RADIOTAP_PRESENT); 320 321 /* 322 * Add a few sysctl knobs. 323 */ 324#ifdef RAL_DEBUG 325 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 326 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 327 "debug", CTLFLAG_RW, &sc->sc_debug, 0, "debug msgs"); 328#endif 329 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 330 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 331 "txantenna", CTLFLAG_RW, &sc->tx_ant, 0, "tx antenna (0=auto)"); 332 333 SYSCTL_ADD_INT(device_get_sysctl_ctx(dev), 334 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 335 "rxantenna", CTLFLAG_RW, &sc->rx_ant, 0, "rx antenna (0=auto)"); 336 337 if (bootverbose) 338 ieee80211_announce(ic); 339 340 return 0; 341 342fail6: rt2560_free_rx_ring(sc, &sc->rxq); 343fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 344fail4: rt2560_free_tx_ring(sc, &sc->prioq); 345fail3: rt2560_free_tx_ring(sc, &sc->atimq); 346fail2: rt2560_free_tx_ring(sc, &sc->txq); 347fail1: mtx_destroy(&sc->sc_mtx); 348 349 return ENXIO; 350} 351 352int 353rt2560_detach(void *xsc) 354{ 355 struct rt2560_softc *sc = xsc; 356 struct ifnet *ifp = sc->sc_ifp; 357 struct ieee80211com *ic = ifp->if_l2com; 358 359 rt2560_stop(sc); 360 361 ieee80211_ifdetach(ic); 362 363 rt2560_free_tx_ring(sc, &sc->txq); 364 rt2560_free_tx_ring(sc, &sc->atimq); 365 rt2560_free_tx_ring(sc, &sc->prioq); 366 rt2560_free_tx_ring(sc, &sc->bcnq); 367 rt2560_free_rx_ring(sc, &sc->rxq); 368 369 if_free(ifp); 370 371 mtx_destroy(&sc->sc_mtx); 372 373 return 0; 374} 375 376static struct ieee80211vap * 377rt2560_vap_create(struct ieee80211com *ic, 378 const char name[IFNAMSIZ], int unit, int opmode, int flags, 379 const uint8_t bssid[IEEE80211_ADDR_LEN], 380 const uint8_t mac[IEEE80211_ADDR_LEN]) 381{ 382 struct ifnet *ifp = ic->ic_ifp; 383 struct rt2560_vap *rvp; 384 struct ieee80211vap *vap; 385 386 switch (opmode) { 387 case IEEE80211_M_STA: 388 case IEEE80211_M_IBSS: 389 case IEEE80211_M_AHDEMO: 390 case IEEE80211_M_MONITOR: 391 case IEEE80211_M_HOSTAP: 392 case IEEE80211_M_MBSS: 393 /* XXXRP: TBD */ 394 if (!TAILQ_EMPTY(&ic->ic_vaps)) { 395 if_printf(ifp, "only 1 vap supported\n"); 396 return NULL; 397 } 398 if (opmode == IEEE80211_M_STA) 399 flags |= IEEE80211_CLONE_NOBEACONS; 400 break; 401 case IEEE80211_M_WDS: 402 if (TAILQ_EMPTY(&ic->ic_vaps) || 403 ic->ic_opmode != IEEE80211_M_HOSTAP) { 404 if_printf(ifp, "wds only supported in ap mode\n"); 405 return NULL; 406 } 407 /* 408 * Silently remove any request for a unique 409 * bssid; WDS vap's always share the local 410 * mac address. 411 */ 412 flags &= ~IEEE80211_CLONE_BSSID; 413 break; 414 default: 415 if_printf(ifp, "unknown opmode %d\n", opmode); 416 return NULL; 417 } 418 rvp = (struct rt2560_vap *) malloc(sizeof(struct rt2560_vap), 419 M_80211_VAP, M_NOWAIT | M_ZERO); 420 if (rvp == NULL) 421 return NULL; 422 vap = &rvp->ral_vap; 423 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 424 425 /* override state transition machine */ 426 rvp->ral_newstate = vap->iv_newstate; 427 vap->iv_newstate = rt2560_newstate; 428 vap->iv_update_beacon = rt2560_beacon_update; 429 430 ieee80211_ratectl_init(vap); 431 /* complete setup */ 432 ieee80211_vap_attach(vap, ieee80211_media_change, ieee80211_media_status); 433 if (TAILQ_FIRST(&ic->ic_vaps) == vap) 434 ic->ic_opmode = opmode; 435 return vap; 436} 437 438static void 439rt2560_vap_delete(struct ieee80211vap *vap) 440{ 441 struct rt2560_vap *rvp = RT2560_VAP(vap); 442 443 ieee80211_ratectl_deinit(vap); 444 ieee80211_vap_detach(vap); 445 free(rvp, M_80211_VAP); 446} 447 448void 449rt2560_resume(void *xsc) 450{ 451 struct rt2560_softc *sc = xsc; 452 struct ifnet *ifp = sc->sc_ifp; 453 454 if (ifp->if_flags & IFF_UP) 455 rt2560_init(sc); 456} 457 458static void 459rt2560_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 460{ 461 if (error != 0) 462 return; 463 464 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 465 466 *(bus_addr_t *)arg = segs[0].ds_addr; 467} 468 469static int 470rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 471 int count) 472{ 473 int i, error; 474 475 ring->count = count; 476 ring->queued = 0; 477 ring->cur = ring->next = 0; 478 ring->cur_encrypt = ring->next_encrypt = 0; 479 480 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 481 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 482 count * RT2560_TX_DESC_SIZE, 1, count * RT2560_TX_DESC_SIZE, 483 0, NULL, NULL, &ring->desc_dmat); 484 if (error != 0) { 485 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 486 goto fail; 487 } 488 489 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 490 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 491 if (error != 0) { 492 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 493 goto fail; 494 } 495 496 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 497 count * RT2560_TX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 498 0); 499 if (error != 0) { 500 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 501 goto fail; 502 } 503 504 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 505 M_NOWAIT | M_ZERO); 506 if (ring->data == NULL) { 507 device_printf(sc->sc_dev, "could not allocate soft data\n"); 508 error = ENOMEM; 509 goto fail; 510 } 511 512 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 513 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 514 MCLBYTES, RT2560_MAX_SCATTER, MCLBYTES, 0, NULL, NULL, 515 &ring->data_dmat); 516 if (error != 0) { 517 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 518 goto fail; 519 } 520 521 for (i = 0; i < count; i++) { 522 error = bus_dmamap_create(ring->data_dmat, 0, 523 &ring->data[i].map); 524 if (error != 0) { 525 device_printf(sc->sc_dev, "could not create DMA map\n"); 526 goto fail; 527 } 528 } 529 530 return 0; 531 532fail: rt2560_free_tx_ring(sc, ring); 533 return error; 534} 535 536static void 537rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 538{ 539 struct rt2560_tx_desc *desc; 540 struct rt2560_tx_data *data; 541 int i; 542 543 for (i = 0; i < ring->count; i++) { 544 desc = &ring->desc[i]; 545 data = &ring->data[i]; 546 547 if (data->m != NULL) { 548 bus_dmamap_sync(ring->data_dmat, data->map, 549 BUS_DMASYNC_POSTWRITE); 550 bus_dmamap_unload(ring->data_dmat, data->map); 551 m_freem(data->m); 552 data->m = NULL; 553 } 554 555 if (data->ni != NULL) { 556 ieee80211_free_node(data->ni); 557 data->ni = NULL; 558 } 559 560 desc->flags = 0; 561 } 562 563 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 564 565 ring->queued = 0; 566 ring->cur = ring->next = 0; 567 ring->cur_encrypt = ring->next_encrypt = 0; 568} 569 570static void 571rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 572{ 573 struct rt2560_tx_data *data; 574 int i; 575 576 if (ring->desc != NULL) { 577 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 578 BUS_DMASYNC_POSTWRITE); 579 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 580 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 581 } 582 583 if (ring->desc_dmat != NULL) 584 bus_dma_tag_destroy(ring->desc_dmat); 585 586 if (ring->data != NULL) { 587 for (i = 0; i < ring->count; i++) { 588 data = &ring->data[i]; 589 590 if (data->m != NULL) { 591 bus_dmamap_sync(ring->data_dmat, data->map, 592 BUS_DMASYNC_POSTWRITE); 593 bus_dmamap_unload(ring->data_dmat, data->map); 594 m_freem(data->m); 595 } 596 597 if (data->ni != NULL) 598 ieee80211_free_node(data->ni); 599 600 if (data->map != NULL) 601 bus_dmamap_destroy(ring->data_dmat, data->map); 602 } 603 604 free(ring->data, M_DEVBUF); 605 } 606 607 if (ring->data_dmat != NULL) 608 bus_dma_tag_destroy(ring->data_dmat); 609} 610 611static int 612rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 613 int count) 614{ 615 struct rt2560_rx_desc *desc; 616 struct rt2560_rx_data *data; 617 bus_addr_t physaddr; 618 int i, error; 619 620 ring->count = count; 621 ring->cur = ring->next = 0; 622 ring->cur_decrypt = 0; 623 624 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 625 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 626 count * RT2560_RX_DESC_SIZE, 1, count * RT2560_RX_DESC_SIZE, 627 0, NULL, NULL, &ring->desc_dmat); 628 if (error != 0) { 629 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 630 goto fail; 631 } 632 633 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 634 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 635 if (error != 0) { 636 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 637 goto fail; 638 } 639 640 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 641 count * RT2560_RX_DESC_SIZE, rt2560_dma_map_addr, &ring->physaddr, 642 0); 643 if (error != 0) { 644 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 645 goto fail; 646 } 647 648 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 649 M_NOWAIT | M_ZERO); 650 if (ring->data == NULL) { 651 device_printf(sc->sc_dev, "could not allocate soft data\n"); 652 error = ENOMEM; 653 goto fail; 654 } 655 656 /* 657 * Pre-allocate Rx buffers and populate Rx ring. 658 */ 659 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 660 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 661 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 662 if (error != 0) { 663 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 664 goto fail; 665 } 666 667 for (i = 0; i < count; i++) { 668 desc = &sc->rxq.desc[i]; 669 data = &sc->rxq.data[i]; 670 671 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 672 if (error != 0) { 673 device_printf(sc->sc_dev, "could not create DMA map\n"); 674 goto fail; 675 } 676 677 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 678 if (data->m == NULL) { 679 device_printf(sc->sc_dev, 680 "could not allocate rx mbuf\n"); 681 error = ENOMEM; 682 goto fail; 683 } 684 685 error = bus_dmamap_load(ring->data_dmat, data->map, 686 mtod(data->m, void *), MCLBYTES, rt2560_dma_map_addr, 687 &physaddr, 0); 688 if (error != 0) { 689 device_printf(sc->sc_dev, 690 "could not load rx buf DMA map"); 691 goto fail; 692 } 693 694 desc->flags = htole32(RT2560_RX_BUSY); 695 desc->physaddr = htole32(physaddr); 696 } 697 698 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 699 700 return 0; 701 702fail: rt2560_free_rx_ring(sc, ring); 703 return error; 704} 705 706static void 707rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 708{ 709 int i; 710 711 for (i = 0; i < ring->count; i++) { 712 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 713 ring->data[i].drop = 0; 714 } 715 716 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, BUS_DMASYNC_PREWRITE); 717 718 ring->cur = ring->next = 0; 719 ring->cur_decrypt = 0; 720} 721 722static void 723rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 724{ 725 struct rt2560_rx_data *data; 726 int i; 727 728 if (ring->desc != NULL) { 729 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 730 BUS_DMASYNC_POSTWRITE); 731 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 732 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 733 } 734 735 if (ring->desc_dmat != NULL) 736 bus_dma_tag_destroy(ring->desc_dmat); 737 738 if (ring->data != NULL) { 739 for (i = 0; i < ring->count; i++) { 740 data = &ring->data[i]; 741 742 if (data->m != NULL) { 743 bus_dmamap_sync(ring->data_dmat, data->map, 744 BUS_DMASYNC_POSTREAD); 745 bus_dmamap_unload(ring->data_dmat, data->map); 746 m_freem(data->m); 747 } 748 749 if (data->map != NULL) 750 bus_dmamap_destroy(ring->data_dmat, data->map); 751 } 752 753 free(ring->data, M_DEVBUF); 754 } 755 756 if (ring->data_dmat != NULL) 757 bus_dma_tag_destroy(ring->data_dmat); 758} 759 760static void 761rt2560_newassoc(struct ieee80211_node *ni, int isnew) 762{ 763 /* XXX move */ 764 ieee80211_ratectl_node_init(ni); 765} 766 767static int 768rt2560_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 769{ 770 struct rt2560_vap *rvp = RT2560_VAP(vap); 771 struct ifnet *ifp = vap->iv_ic->ic_ifp; 772 struct rt2560_softc *sc = ifp->if_softc; 773 int error; 774 775 if (nstate == IEEE80211_S_INIT && vap->iv_state == IEEE80211_S_RUN) { 776 /* abort TSF synchronization */ 777 RAL_WRITE(sc, RT2560_CSR14, 0); 778 779 /* turn association led off */ 780 rt2560_update_led(sc, 0, 0); 781 } 782 783 error = rvp->ral_newstate(vap, nstate, arg); 784 785 if (error == 0 && nstate == IEEE80211_S_RUN) { 786 struct ieee80211_node *ni = vap->iv_bss; 787 struct mbuf *m; 788 789 if (vap->iv_opmode != IEEE80211_M_MONITOR) { 790 rt2560_update_plcp(sc); 791 rt2560_set_basicrates(sc); 792 rt2560_set_bssid(sc, ni->ni_bssid); 793 } 794 795 if (vap->iv_opmode == IEEE80211_M_HOSTAP || 796 vap->iv_opmode == IEEE80211_M_IBSS || 797 vap->iv_opmode == IEEE80211_M_MBSS) { 798 m = ieee80211_beacon_alloc(ni, &rvp->ral_bo); 799 if (m == NULL) { 800 if_printf(ifp, "could not allocate beacon\n"); 801 return ENOBUFS; 802 } 803 ieee80211_ref_node(ni); 804 error = rt2560_tx_bcn(sc, m, ni); 805 if (error != 0) 806 return error; 807 } 808 809 /* turn assocation led on */ 810 rt2560_update_led(sc, 1, 0); 811 812 if (vap->iv_opmode != IEEE80211_M_MONITOR) 813 rt2560_enable_tsf_sync(sc); 814 else 815 rt2560_enable_tsf(sc); 816 } 817 return error; 818} 819 820/* 821 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 822 * 93C66). 823 */ 824static uint16_t 825rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 826{ 827 uint32_t tmp; 828 uint16_t val; 829 int n; 830 831 /* clock C once before the first command */ 832 RT2560_EEPROM_CTL(sc, 0); 833 834 RT2560_EEPROM_CTL(sc, RT2560_S); 835 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 836 RT2560_EEPROM_CTL(sc, RT2560_S); 837 838 /* write start bit (1) */ 839 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 840 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 841 842 /* write READ opcode (10) */ 843 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 844 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 845 RT2560_EEPROM_CTL(sc, RT2560_S); 846 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 847 848 /* write address (A5-A0 or A7-A0) */ 849 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 850 for (; n >= 0; n--) { 851 RT2560_EEPROM_CTL(sc, RT2560_S | 852 (((addr >> n) & 1) << RT2560_SHIFT_D)); 853 RT2560_EEPROM_CTL(sc, RT2560_S | 854 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 855 } 856 857 RT2560_EEPROM_CTL(sc, RT2560_S); 858 859 /* read data Q15-Q0 */ 860 val = 0; 861 for (n = 15; n >= 0; n--) { 862 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 863 tmp = RAL_READ(sc, RT2560_CSR21); 864 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 865 RT2560_EEPROM_CTL(sc, RT2560_S); 866 } 867 868 RT2560_EEPROM_CTL(sc, 0); 869 870 /* clear Chip Select and clock C */ 871 RT2560_EEPROM_CTL(sc, RT2560_S); 872 RT2560_EEPROM_CTL(sc, 0); 873 RT2560_EEPROM_CTL(sc, RT2560_C); 874 875 return val; 876} 877 878/* 879 * Some frames were processed by the hardware cipher engine and are ready for 880 * transmission. 881 */ 882static void 883rt2560_encryption_intr(struct rt2560_softc *sc) 884{ 885 struct rt2560_tx_desc *desc; 886 int hw; 887 888 /* retrieve last descriptor index processed by cipher engine */ 889 hw = RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr; 890 hw /= RT2560_TX_DESC_SIZE; 891 892 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 893 BUS_DMASYNC_POSTREAD); 894 895 while (sc->txq.next_encrypt != hw) { 896 if (sc->txq.next_encrypt == sc->txq.cur_encrypt) { 897 printf("hw encrypt %d, cur_encrypt %d\n", hw, 898 sc->txq.cur_encrypt); 899 break; 900 } 901 902 desc = &sc->txq.desc[sc->txq.next_encrypt]; 903 904 if ((le32toh(desc->flags) & RT2560_TX_BUSY) || 905 (le32toh(desc->flags) & RT2560_TX_CIPHER_BUSY)) 906 break; 907 908 /* for TKIP, swap eiv field to fix a bug in ASIC */ 909 if ((le32toh(desc->flags) & RT2560_TX_CIPHER_MASK) == 910 RT2560_TX_CIPHER_TKIP) 911 desc->eiv = bswap32(desc->eiv); 912 913 /* mark the frame ready for transmission */ 914 desc->flags |= htole32(RT2560_TX_VALID); 915 desc->flags |= htole32(RT2560_TX_BUSY); 916 917 DPRINTFN(sc, 15, "encryption done idx=%u\n", 918 sc->txq.next_encrypt); 919 920 sc->txq.next_encrypt = 921 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 922 } 923 924 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 925 BUS_DMASYNC_PREWRITE); 926 927 /* kick Tx */ 928 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 929} 930 931static void 932rt2560_tx_intr(struct rt2560_softc *sc) 933{ 934 struct ifnet *ifp = sc->sc_ifp; 935 struct rt2560_tx_desc *desc; 936 struct rt2560_tx_data *data; 937 struct mbuf *m; 938 uint32_t flags; 939 int retrycnt; 940 struct ieee80211vap *vap; 941 struct ieee80211_node *ni; 942 943 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 944 BUS_DMASYNC_POSTREAD); 945 946 for (;;) { 947 desc = &sc->txq.desc[sc->txq.next]; 948 data = &sc->txq.data[sc->txq.next]; 949 950 flags = le32toh(desc->flags); 951 if ((flags & RT2560_TX_BUSY) || 952 (flags & RT2560_TX_CIPHER_BUSY) || 953 !(flags & RT2560_TX_VALID)) 954 break; 955 956 m = data->m; 957 ni = data->ni; 958 vap = ni->ni_vap; 959 960 switch (flags & RT2560_TX_RESULT_MASK) { 961 case RT2560_TX_SUCCESS: 962 retrycnt = 0; 963 964 DPRINTFN(sc, 10, "%s\n", "data frame sent successfully"); 965 if (data->rix != IEEE80211_FIXED_RATE_NONE) 966 ieee80211_ratectl_tx_complete(vap, ni, 967 IEEE80211_RATECTL_TX_SUCCESS, 968 &retrycnt, NULL); 969 ifp->if_opackets++; 970 break; 971 972 case RT2560_TX_SUCCESS_RETRY: 973 retrycnt = RT2560_TX_RETRYCNT(flags); 974 975 DPRINTFN(sc, 9, "data frame sent after %u retries\n", 976 retrycnt); 977 if (data->rix != IEEE80211_FIXED_RATE_NONE) 978 ieee80211_ratectl_tx_complete(vap, ni, 979 IEEE80211_RATECTL_TX_SUCCESS, 980 &retrycnt, NULL); 981 ifp->if_opackets++; 982 break; 983 984 case RT2560_TX_FAIL_RETRY: 985 retrycnt = RT2560_TX_RETRYCNT(flags); 986 987 DPRINTFN(sc, 9, "data frame failed after %d retries\n", 988 retrycnt); 989 if (data->rix != IEEE80211_FIXED_RATE_NONE) 990 ieee80211_ratectl_tx_complete(vap, ni, 991 IEEE80211_RATECTL_TX_FAILURE, 992 &retrycnt, NULL); 993 ifp->if_oerrors++; 994 break; 995 996 case RT2560_TX_FAIL_INVALID: 997 case RT2560_TX_FAIL_OTHER: 998 default: 999 device_printf(sc->sc_dev, "sending data frame failed " 1000 "0x%08x\n", flags); 1001 ifp->if_oerrors++; 1002 } 1003 1004 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1005 BUS_DMASYNC_POSTWRITE); 1006 bus_dmamap_unload(sc->txq.data_dmat, data->map); 1007 m_freem(m); 1008 data->m = NULL; 1009 ieee80211_free_node(data->ni); 1010 data->ni = NULL; 1011 1012 /* descriptor is no longer valid */ 1013 desc->flags &= ~htole32(RT2560_TX_VALID); 1014 1015 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1016 1017 sc->txq.queued--; 1018 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1019 } 1020 1021 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1022 BUS_DMASYNC_PREWRITE); 1023 1024 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1025 sc->sc_tx_timer = 0; 1026 1027 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1028 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1029 if ((sc->sc_flags & 1030 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1031 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1032 rt2560_start_locked(ifp); 1033 } 1034} 1035 1036static void 1037rt2560_prio_intr(struct rt2560_softc *sc) 1038{ 1039 struct ifnet *ifp = sc->sc_ifp; 1040 struct rt2560_tx_desc *desc; 1041 struct rt2560_tx_data *data; 1042 struct ieee80211_node *ni; 1043 struct mbuf *m; 1044 int flags; 1045 1046 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1047 BUS_DMASYNC_POSTREAD); 1048 1049 for (;;) { 1050 desc = &sc->prioq.desc[sc->prioq.next]; 1051 data = &sc->prioq.data[sc->prioq.next]; 1052 1053 flags = le32toh(desc->flags); 1054 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1055 break; 1056 1057 switch (flags & RT2560_TX_RESULT_MASK) { 1058 case RT2560_TX_SUCCESS: 1059 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1060 break; 1061 1062 case RT2560_TX_SUCCESS_RETRY: 1063 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1064 (flags >> 5) & 0x7); 1065 break; 1066 1067 case RT2560_TX_FAIL_RETRY: 1068 DPRINTFN(sc, 9, "%s\n", 1069 "sending mgt frame failed (too much retries)"); 1070 break; 1071 1072 case RT2560_TX_FAIL_INVALID: 1073 case RT2560_TX_FAIL_OTHER: 1074 default: 1075 device_printf(sc->sc_dev, "sending mgt frame failed " 1076 "0x%08x\n", flags); 1077 break; 1078 } 1079 1080 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1081 BUS_DMASYNC_POSTWRITE); 1082 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1083 1084 m = data->m; 1085 data->m = NULL; 1086 ni = data->ni; 1087 data->ni = NULL; 1088 1089 /* descriptor is no longer valid */ 1090 desc->flags &= ~htole32(RT2560_TX_VALID); 1091 1092 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1093 1094 sc->prioq.queued--; 1095 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1096 1097 if (m->m_flags & M_TXCB) 1098 ieee80211_process_callback(ni, m, 1099 (flags & RT2560_TX_RESULT_MASK) &~ 1100 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1101 m_freem(m); 1102 ieee80211_free_node(ni); 1103 } 1104 1105 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1106 BUS_DMASYNC_PREWRITE); 1107 1108 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1109 sc->sc_tx_timer = 0; 1110 1111 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1112 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1113 if ((sc->sc_flags & 1114 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1115 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1116 rt2560_start_locked(ifp); 1117 } 1118} 1119 1120/* 1121 * Some frames were processed by the hardware cipher engine and are ready for 1122 * handoff to the IEEE802.11 layer. 1123 */ 1124static void 1125rt2560_decryption_intr(struct rt2560_softc *sc) 1126{ 1127 struct ifnet *ifp = sc->sc_ifp; 1128 struct ieee80211com *ic = ifp->if_l2com; 1129 struct rt2560_rx_desc *desc; 1130 struct rt2560_rx_data *data; 1131 bus_addr_t physaddr; 1132 struct ieee80211_frame *wh; 1133 struct ieee80211_node *ni; 1134 struct mbuf *mnew, *m; 1135 int hw, error; 1136 int8_t rssi, nf; 1137 1138 /* retrieve last decriptor index processed by cipher engine */ 1139 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1140 hw /= RT2560_RX_DESC_SIZE; 1141 1142 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1143 BUS_DMASYNC_POSTREAD); 1144 1145 for (; sc->rxq.cur_decrypt != hw;) { 1146 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1147 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1148 1149 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1150 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1151 break; 1152 1153 if (data->drop) { 1154 ifp->if_ierrors++; 1155 goto skip; 1156 } 1157 1158 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1159 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1160 ifp->if_ierrors++; 1161 goto skip; 1162 } 1163 1164 /* 1165 * Try to allocate a new mbuf for this ring element and load it 1166 * before processing the current mbuf. If the ring element 1167 * cannot be loaded, drop the received packet and reuse the old 1168 * mbuf. In the unlikely case that the old mbuf can't be 1169 * reloaded either, explicitly panic. 1170 */ 1171 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1172 if (mnew == NULL) { 1173 ifp->if_ierrors++; 1174 goto skip; 1175 } 1176 1177 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1178 BUS_DMASYNC_POSTREAD); 1179 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1180 1181 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1182 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1183 &physaddr, 0); 1184 if (error != 0) { 1185 m_freem(mnew); 1186 1187 /* try to reload the old mbuf */ 1188 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1189 mtod(data->m, void *), MCLBYTES, 1190 rt2560_dma_map_addr, &physaddr, 0); 1191 if (error != 0) { 1192 /* very unlikely that it will fail... */ 1193 panic("%s: could not load old rx mbuf", 1194 device_get_name(sc->sc_dev)); 1195 } 1196 ifp->if_ierrors++; 1197 goto skip; 1198 } 1199 1200 /* 1201 * New mbuf successfully loaded, update Rx ring and continue 1202 * processing. 1203 */ 1204 m = data->m; 1205 data->m = mnew; 1206 desc->physaddr = htole32(physaddr); 1207 1208 /* finalize mbuf */ 1209 m->m_pkthdr.rcvif = ifp; 1210 m->m_pkthdr.len = m->m_len = 1211 (le32toh(desc->flags) >> 16) & 0xfff; 1212 1213 rssi = RT2560_RSSI(sc, desc->rssi); 1214 nf = RT2560_NOISE_FLOOR; 1215 if (ieee80211_radiotap_active(ic)) { 1216 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1217 uint32_t tsf_lo, tsf_hi; 1218 1219 /* get timestamp (low and high 32 bits) */ 1220 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1221 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1222 1223 tap->wr_tsf = 1224 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1225 tap->wr_flags = 0; 1226 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1227 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1228 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1229 tap->wr_antenna = sc->rx_ant; 1230 tap->wr_antsignal = nf + rssi; 1231 tap->wr_antnoise = nf; 1232 } 1233 1234 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1235 RAL_UNLOCK(sc); 1236 wh = mtod(m, struct ieee80211_frame *); 1237 ni = ieee80211_find_rxnode(ic, 1238 (struct ieee80211_frame_min *)wh); 1239 if (ni != NULL) { 1240 (void) ieee80211_input(ni, m, rssi, nf); 1241 ieee80211_free_node(ni); 1242 } else 1243 (void) ieee80211_input_all(ic, m, rssi, nf); 1244 1245 RAL_LOCK(sc); 1246 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1247skip: desc->flags = htole32(RT2560_RX_BUSY); 1248 1249 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1250 1251 sc->rxq.cur_decrypt = 1252 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1253 } 1254 1255 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1256 BUS_DMASYNC_PREWRITE); 1257} 1258 1259/* 1260 * Some frames were received. Pass them to the hardware cipher engine before 1261 * sending them to the 802.11 layer. 1262 */ 1263static void 1264rt2560_rx_intr(struct rt2560_softc *sc) 1265{ 1266 struct rt2560_rx_desc *desc; 1267 struct rt2560_rx_data *data; 1268 1269 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1270 BUS_DMASYNC_POSTREAD); 1271 1272 for (;;) { 1273 desc = &sc->rxq.desc[sc->rxq.cur]; 1274 data = &sc->rxq.data[sc->rxq.cur]; 1275 1276 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1277 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1278 break; 1279 1280 data->drop = 0; 1281 1282 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1283 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1284 /* 1285 * This should not happen since we did not request 1286 * to receive those frames when we filled RXCSR0. 1287 */ 1288 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1289 le32toh(desc->flags)); 1290 data->drop = 1; 1291 } 1292 1293 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1294 DPRINTFN(sc, 5, "%s\n", "bad length"); 1295 data->drop = 1; 1296 } 1297 1298 /* mark the frame for decryption */ 1299 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1300 1301 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1302 1303 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1304 } 1305 1306 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1307 BUS_DMASYNC_PREWRITE); 1308 1309 /* kick decrypt */ 1310 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1311} 1312 1313static void 1314rt2560_beacon_update(struct ieee80211vap *vap, int item) 1315{ 1316 struct rt2560_vap *rvp = RT2560_VAP(vap); 1317 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1318 1319 setbit(bo->bo_flags, item); 1320} 1321 1322/* 1323 * This function is called periodically in IBSS mode when a new beacon must be 1324 * sent out. 1325 */ 1326static void 1327rt2560_beacon_expire(struct rt2560_softc *sc) 1328{ 1329 struct ifnet *ifp = sc->sc_ifp; 1330 struct ieee80211com *ic = ifp->if_l2com; 1331 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1332 struct rt2560_vap *rvp = RT2560_VAP(vap); 1333 struct rt2560_tx_data *data; 1334 1335 if (ic->ic_opmode != IEEE80211_M_IBSS && 1336 ic->ic_opmode != IEEE80211_M_HOSTAP && 1337 ic->ic_opmode != IEEE80211_M_MBSS) 1338 return; 1339 1340 data = &sc->bcnq.data[sc->bcnq.next]; 1341 /* 1342 * Don't send beacon if bsschan isn't set 1343 */ 1344 if (data->ni == NULL) 1345 return; 1346 1347 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1348 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1349 1350 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1351 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1352 1353 rt2560_tx_bcn(sc, data->m, data->ni); 1354 1355 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1356 1357 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1358} 1359 1360/* ARGSUSED */ 1361static void 1362rt2560_wakeup_expire(struct rt2560_softc *sc) 1363{ 1364 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1365} 1366 1367void 1368rt2560_intr(void *arg) 1369{ 1370 struct rt2560_softc *sc = arg; 1371 struct ifnet *ifp = sc->sc_ifp; 1372 uint32_t r; 1373 1374 RAL_LOCK(sc); 1375 1376 /* disable interrupts */ 1377 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1378 1379 /* don't re-enable interrupts if we're shutting down */ 1380 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1381 RAL_UNLOCK(sc); 1382 return; 1383 } 1384 1385 r = RAL_READ(sc, RT2560_CSR7); 1386 RAL_WRITE(sc, RT2560_CSR7, r); 1387 1388 if (r & RT2560_BEACON_EXPIRE) 1389 rt2560_beacon_expire(sc); 1390 1391 if (r & RT2560_WAKEUP_EXPIRE) 1392 rt2560_wakeup_expire(sc); 1393 1394 if (r & RT2560_ENCRYPTION_DONE) 1395 rt2560_encryption_intr(sc); 1396 1397 if (r & RT2560_TX_DONE) 1398 rt2560_tx_intr(sc); 1399 1400 if (r & RT2560_PRIO_DONE) 1401 rt2560_prio_intr(sc); 1402 1403 if (r & RT2560_DECRYPTION_DONE) 1404 rt2560_decryption_intr(sc); 1405 1406 if (r & RT2560_RX_DONE) { 1407 rt2560_rx_intr(sc); 1408 rt2560_encryption_intr(sc); 1409 } 1410 1411 /* re-enable interrupts */ 1412 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1413 1414 RAL_UNLOCK(sc); 1415} 1416 1417#define RAL_SIFS 10 /* us */ 1418 1419#define RT2560_TXRX_TURNAROUND 10 /* us */ 1420 1421static uint8_t 1422rt2560_plcp_signal(int rate) 1423{ 1424 switch (rate) { 1425 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1426 case 12: return 0xb; 1427 case 18: return 0xf; 1428 case 24: return 0xa; 1429 case 36: return 0xe; 1430 case 48: return 0x9; 1431 case 72: return 0xd; 1432 case 96: return 0x8; 1433 case 108: return 0xc; 1434 1435 /* CCK rates (NB: not IEEE std, device-specific) */ 1436 case 2: return 0x0; 1437 case 4: return 0x1; 1438 case 11: return 0x2; 1439 case 22: return 0x3; 1440 } 1441 return 0xff; /* XXX unsupported/unknown rate */ 1442} 1443 1444static void 1445rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1446 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1447{ 1448 struct ifnet *ifp = sc->sc_ifp; 1449 struct ieee80211com *ic = ifp->if_l2com; 1450 uint16_t plcp_length; 1451 int remainder; 1452 1453 desc->flags = htole32(flags); 1454 desc->flags |= htole32(len << 16); 1455 1456 desc->physaddr = htole32(physaddr); 1457 desc->wme = htole16( 1458 RT2560_AIFSN(2) | 1459 RT2560_LOGCWMIN(3) | 1460 RT2560_LOGCWMAX(8)); 1461 1462 /* setup PLCP fields */ 1463 desc->plcp_signal = rt2560_plcp_signal(rate); 1464 desc->plcp_service = 4; 1465 1466 len += IEEE80211_CRC_LEN; 1467 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1468 desc->flags |= htole32(RT2560_TX_OFDM); 1469 1470 plcp_length = len & 0xfff; 1471 desc->plcp_length_hi = plcp_length >> 6; 1472 desc->plcp_length_lo = plcp_length & 0x3f; 1473 } else { 1474 plcp_length = (16 * len + rate - 1) / rate; 1475 if (rate == 22) { 1476 remainder = (16 * len) % 22; 1477 if (remainder != 0 && remainder < 7) 1478 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1479 } 1480 desc->plcp_length_hi = plcp_length >> 8; 1481 desc->plcp_length_lo = plcp_length & 0xff; 1482 1483 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1484 desc->plcp_signal |= 0x08; 1485 } 1486 1487 if (!encrypt) 1488 desc->flags |= htole32(RT2560_TX_VALID); 1489 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1490 : htole32(RT2560_TX_BUSY); 1491} 1492 1493static int 1494rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1495 struct ieee80211_node *ni) 1496{ 1497 struct ieee80211vap *vap = ni->ni_vap; 1498 struct rt2560_tx_desc *desc; 1499 struct rt2560_tx_data *data; 1500 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1501 int nsegs, rate, error; 1502 1503 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1504 data = &sc->bcnq.data[sc->bcnq.cur]; 1505 1506 /* XXX maybe a separate beacon rate? */ 1507 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1508 1509 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1510 segs, &nsegs, BUS_DMA_NOWAIT); 1511 if (error != 0) { 1512 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1513 error); 1514 m_freem(m0); 1515 return error; 1516 } 1517 1518 if (ieee80211_radiotap_active_vap(vap)) { 1519 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1520 1521 tap->wt_flags = 0; 1522 tap->wt_rate = rate; 1523 tap->wt_antenna = sc->tx_ant; 1524 1525 ieee80211_radiotap_tx(vap, m0); 1526 } 1527 1528 data->m = m0; 1529 data->ni = ni; 1530 1531 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1532 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1533 1534 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1535 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1536 1537 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1538 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1539 BUS_DMASYNC_PREWRITE); 1540 1541 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1542 1543 return 0; 1544} 1545 1546static int 1547rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1548 struct ieee80211_node *ni) 1549{ 1550 struct ieee80211vap *vap = ni->ni_vap; 1551 struct ieee80211com *ic = ni->ni_ic; 1552 struct rt2560_tx_desc *desc; 1553 struct rt2560_tx_data *data; 1554 struct ieee80211_frame *wh; 1555 struct ieee80211_key *k; 1556 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1557 uint16_t dur; 1558 uint32_t flags = 0; 1559 int nsegs, rate, error; 1560 1561 desc = &sc->prioq.desc[sc->prioq.cur]; 1562 data = &sc->prioq.data[sc->prioq.cur]; 1563 1564 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1565 1566 wh = mtod(m0, struct ieee80211_frame *); 1567 1568 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1569 k = ieee80211_crypto_encap(ni, m0); 1570 if (k == NULL) { 1571 m_freem(m0); 1572 return ENOBUFS; 1573 } 1574 } 1575 1576 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1577 segs, &nsegs, 0); 1578 if (error != 0) { 1579 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1580 error); 1581 m_freem(m0); 1582 return error; 1583 } 1584 1585 if (ieee80211_radiotap_active_vap(vap)) { 1586 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1587 1588 tap->wt_flags = 0; 1589 tap->wt_rate = rate; 1590 tap->wt_antenna = sc->tx_ant; 1591 1592 ieee80211_radiotap_tx(vap, m0); 1593 } 1594 1595 data->m = m0; 1596 data->ni = ni; 1597 /* management frames are not taken into account for amrr */ 1598 data->rix = IEEE80211_FIXED_RATE_NONE; 1599 1600 wh = mtod(m0, struct ieee80211_frame *); 1601 1602 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1603 flags |= RT2560_TX_ACK; 1604 1605 dur = ieee80211_ack_duration(ic->ic_rt, 1606 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1607 *(uint16_t *)wh->i_dur = htole16(dur); 1608 1609 /* tell hardware to add timestamp for probe responses */ 1610 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1611 IEEE80211_FC0_TYPE_MGT && 1612 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1613 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1614 flags |= RT2560_TX_TIMESTAMP; 1615 } 1616 1617 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1618 segs->ds_addr); 1619 1620 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1621 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1622 BUS_DMASYNC_PREWRITE); 1623 1624 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1625 m0->m_pkthdr.len, sc->prioq.cur, rate); 1626 1627 /* kick prio */ 1628 sc->prioq.queued++; 1629 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1630 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1631 1632 return 0; 1633} 1634 1635static int 1636rt2560_sendprot(struct rt2560_softc *sc, 1637 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1638{ 1639 struct ieee80211com *ic = ni->ni_ic; 1640 const struct ieee80211_frame *wh; 1641 struct rt2560_tx_desc *desc; 1642 struct rt2560_tx_data *data; 1643 struct mbuf *mprot; 1644 int protrate, ackrate, pktlen, flags, isshort, error; 1645 uint16_t dur; 1646 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1647 int nsegs; 1648 1649 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1650 ("protection %d", prot)); 1651 1652 wh = mtod(m, const struct ieee80211_frame *); 1653 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1654 1655 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1656 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1657 1658 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1659 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1660 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1661 flags = RT2560_TX_MORE_FRAG; 1662 if (prot == IEEE80211_PROT_RTSCTS) { 1663 /* NB: CTS is the same size as an ACK */ 1664 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1665 flags |= RT2560_TX_ACK; 1666 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1667 } else { 1668 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1669 } 1670 if (mprot == NULL) { 1671 /* XXX stat + msg */ 1672 return ENOBUFS; 1673 } 1674 1675 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1676 data = &sc->txq.data[sc->txq.cur_encrypt]; 1677 1678 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1679 mprot, segs, &nsegs, 0); 1680 if (error != 0) { 1681 device_printf(sc->sc_dev, 1682 "could not map mbuf (error %d)\n", error); 1683 m_freem(mprot); 1684 return error; 1685 } 1686 1687 data->m = mprot; 1688 data->ni = ieee80211_ref_node(ni); 1689 /* ctl frames are not taken into account for amrr */ 1690 data->rix = IEEE80211_FIXED_RATE_NONE; 1691 1692 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1693 segs->ds_addr); 1694 1695 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1696 BUS_DMASYNC_PREWRITE); 1697 1698 sc->txq.queued++; 1699 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1700 1701 return 0; 1702} 1703 1704static int 1705rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1706 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1707{ 1708 struct ieee80211vap *vap = ni->ni_vap; 1709 struct ieee80211com *ic = ni->ni_ic; 1710 struct rt2560_tx_desc *desc; 1711 struct rt2560_tx_data *data; 1712 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1713 uint32_t flags; 1714 int nsegs, rate, error; 1715 1716 desc = &sc->prioq.desc[sc->prioq.cur]; 1717 data = &sc->prioq.data[sc->prioq.cur]; 1718 1719 rate = params->ibp_rate0; 1720 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1721 /* XXX fall back to mcast/mgmt rate? */ 1722 m_freem(m0); 1723 return EINVAL; 1724 } 1725 1726 flags = 0; 1727 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1728 flags |= RT2560_TX_ACK; 1729 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1730 error = rt2560_sendprot(sc, m0, ni, 1731 params->ibp_flags & IEEE80211_BPF_RTS ? 1732 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1733 rate); 1734 if (error) { 1735 m_freem(m0); 1736 return error; 1737 } 1738 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1739 } 1740 1741 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1742 segs, &nsegs, 0); 1743 if (error != 0) { 1744 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1745 error); 1746 m_freem(m0); 1747 return error; 1748 } 1749 1750 if (ieee80211_radiotap_active_vap(vap)) { 1751 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1752 1753 tap->wt_flags = 0; 1754 tap->wt_rate = rate; 1755 tap->wt_antenna = sc->tx_ant; 1756 1757 ieee80211_radiotap_tx(ni->ni_vap, m0); 1758 } 1759 1760 data->m = m0; 1761 data->ni = ni; 1762 1763 /* XXX need to setup descriptor ourself */ 1764 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1765 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1766 segs->ds_addr); 1767 1768 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1769 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1770 BUS_DMASYNC_PREWRITE); 1771 1772 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1773 m0->m_pkthdr.len, sc->prioq.cur, rate); 1774 1775 /* kick prio */ 1776 sc->prioq.queued++; 1777 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1778 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1779 1780 return 0; 1781} 1782 1783static int 1784rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1785 struct ieee80211_node *ni) 1786{ 1787 struct ieee80211vap *vap = ni->ni_vap; 1788 struct ieee80211com *ic = ni->ni_ic; 1789 struct rt2560_tx_desc *desc; 1790 struct rt2560_tx_data *data; 1791 struct ieee80211_frame *wh; 1792 const struct ieee80211_txparam *tp; 1793 struct ieee80211_key *k; 1794 struct mbuf *mnew; 1795 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1796 uint16_t dur; 1797 uint32_t flags; 1798 int nsegs, rate, error; 1799 1800 wh = mtod(m0, struct ieee80211_frame *); 1801 1802 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1803 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1804 rate = tp->mcastrate; 1805 } else if (m0->m_flags & M_EAPOL) { 1806 rate = tp->mgmtrate; 1807 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1808 rate = tp->ucastrate; 1809 } else { 1810 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1811 rate = ni->ni_txrate; 1812 } 1813 1814 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1815 k = ieee80211_crypto_encap(ni, m0); 1816 if (k == NULL) { 1817 m_freem(m0); 1818 return ENOBUFS; 1819 } 1820 1821 /* packet header may have moved, reset our local pointer */ 1822 wh = mtod(m0, struct ieee80211_frame *); 1823 } 1824 1825 flags = 0; 1826 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1827 int prot = IEEE80211_PROT_NONE; 1828 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1829 prot = IEEE80211_PROT_RTSCTS; 1830 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1831 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1832 prot = ic->ic_protmode; 1833 if (prot != IEEE80211_PROT_NONE) { 1834 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1835 if (error) { 1836 m_freem(m0); 1837 return error; 1838 } 1839 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1840 } 1841 } 1842 1843 data = &sc->txq.data[sc->txq.cur_encrypt]; 1844 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1845 1846 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1847 segs, &nsegs, 0); 1848 if (error != 0 && error != EFBIG) { 1849 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1850 error); 1851 m_freem(m0); 1852 return error; 1853 } 1854 if (error != 0) { 1855 mnew = m_defrag(m0, M_DONTWAIT); 1856 if (mnew == NULL) { 1857 device_printf(sc->sc_dev, 1858 "could not defragment mbuf\n"); 1859 m_freem(m0); 1860 return ENOBUFS; 1861 } 1862 m0 = mnew; 1863 1864 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1865 m0, segs, &nsegs, 0); 1866 if (error != 0) { 1867 device_printf(sc->sc_dev, 1868 "could not map mbuf (error %d)\n", error); 1869 m_freem(m0); 1870 return error; 1871 } 1872 1873 /* packet header may have moved, reset our local pointer */ 1874 wh = mtod(m0, struct ieee80211_frame *); 1875 } 1876 1877 if (ieee80211_radiotap_active_vap(vap)) { 1878 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1879 1880 tap->wt_flags = 0; 1881 tap->wt_rate = rate; 1882 tap->wt_antenna = sc->tx_ant; 1883 1884 ieee80211_radiotap_tx(vap, m0); 1885 } 1886 1887 data->m = m0; 1888 data->ni = ni; 1889 1890 /* remember link conditions for rate adaptation algorithm */ 1891 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1892 data->rix = ni->ni_txrate; 1893 /* XXX probably need last rssi value and not avg */ 1894 data->rssi = ic->ic_node_getrssi(ni); 1895 } else 1896 data->rix = IEEE80211_FIXED_RATE_NONE; 1897 1898 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1899 flags |= RT2560_TX_ACK; 1900 1901 dur = ieee80211_ack_duration(ic->ic_rt, 1902 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1903 *(uint16_t *)wh->i_dur = htole16(dur); 1904 } 1905 1906 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1907 segs->ds_addr); 1908 1909 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1910 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1911 BUS_DMASYNC_PREWRITE); 1912 1913 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1914 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1915 1916 /* kick encrypt */ 1917 sc->txq.queued++; 1918 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1919 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1920 1921 return 0; 1922} 1923 1924static void 1925rt2560_start_locked(struct ifnet *ifp) 1926{ 1927 struct rt2560_softc *sc = ifp->if_softc; 1928 struct mbuf *m; 1929 struct ieee80211_node *ni; 1930 1931 RAL_LOCK_ASSERT(sc); 1932 1933 for (;;) { 1934 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1935 if (m == NULL) 1936 break; 1937 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1938 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1939 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1940 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1941 break; 1942 } 1943 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1944 if (rt2560_tx_data(sc, m, ni) != 0) { 1945 ieee80211_free_node(ni); 1946 ifp->if_oerrors++; 1947 break; 1948 } 1949 1950 sc->sc_tx_timer = 5; 1951 } 1952} 1953 1954static void 1955rt2560_start(struct ifnet *ifp) 1956{ 1957 struct rt2560_softc *sc = ifp->if_softc; 1958 1959 RAL_LOCK(sc); 1960 rt2560_start_locked(ifp); 1961 RAL_UNLOCK(sc); 1962} 1963 1964static void 1965rt2560_watchdog(void *arg) 1966{ 1967 struct rt2560_softc *sc = arg; 1968 struct ifnet *ifp = sc->sc_ifp; 1969 1970 RAL_LOCK_ASSERT(sc); 1971 1972 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1973 1974 if (sc->sc_invalid) /* card ejected */ 1975 return; 1976 1977 rt2560_encryption_intr(sc); 1978 rt2560_tx_intr(sc); 1979 1980 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1981 if_printf(ifp, "device timeout\n"); 1982 rt2560_init_locked(sc); 1983 ifp->if_oerrors++; 1984 /* NB: callout is reset in rt2560_init() */ 1985 return; 1986 } 1987 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1988} 1989 1990static int 1991rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1992{ 1993 struct rt2560_softc *sc = ifp->if_softc; 1994 struct ieee80211com *ic = ifp->if_l2com; 1995 struct ifreq *ifr = (struct ifreq *) data; 1996 int error = 0, startall = 0; 1997 1998 switch (cmd) { 1999 case SIOCSIFFLAGS: 2000 RAL_LOCK(sc); 2001 if (ifp->if_flags & IFF_UP) { 2002 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2003 rt2560_init_locked(sc); 2004 startall = 1; 2005 } else 2006 rt2560_update_promisc(ifp); 2007 } else { 2008 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2009 rt2560_stop_locked(sc); 2010 } 2011 RAL_UNLOCK(sc); 2012 if (startall) 2013 ieee80211_start_all(ic); 2014 break; 2015 case SIOCGIFMEDIA: 2016 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2017 break; 2018 case SIOCGIFADDR: 2019 error = ether_ioctl(ifp, cmd, data); 2020 break; 2021 default: 2022 error = EINVAL; 2023 break; 2024 } 2025 return error; 2026} 2027 2028static void 2029rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2030{ 2031 uint32_t tmp; 2032 int ntries; 2033 2034 for (ntries = 0; ntries < 100; ntries++) { 2035 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2036 break; 2037 DELAY(1); 2038 } 2039 if (ntries == 100) { 2040 device_printf(sc->sc_dev, "could not write to BBP\n"); 2041 return; 2042 } 2043 2044 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2045 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2046 2047 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2048} 2049 2050static uint8_t 2051rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2052{ 2053 uint32_t val; 2054 int ntries; 2055 2056 for (ntries = 0; ntries < 100; ntries++) { 2057 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2058 break; 2059 DELAY(1); 2060 } 2061 if (ntries == 100) { 2062 device_printf(sc->sc_dev, "could not read from BBP\n"); 2063 return 0; 2064 } 2065 2066 val = RT2560_BBP_BUSY | reg << 8; 2067 RAL_WRITE(sc, RT2560_BBPCSR, val); 2068 2069 for (ntries = 0; ntries < 100; ntries++) { 2070 val = RAL_READ(sc, RT2560_BBPCSR); 2071 if (!(val & RT2560_BBP_BUSY)) 2072 return val & 0xff; 2073 DELAY(1); 2074 } 2075 2076 device_printf(sc->sc_dev, "could not read from BBP\n"); 2077 return 0; 2078} 2079 2080static void 2081rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2082{ 2083 uint32_t tmp; 2084 int ntries; 2085 2086 for (ntries = 0; ntries < 100; ntries++) { 2087 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2088 break; 2089 DELAY(1); 2090 } 2091 if (ntries == 100) { 2092 device_printf(sc->sc_dev, "could not write to RF\n"); 2093 return; 2094 } 2095 2096 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2097 (reg & 0x3); 2098 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2099 2100 /* remember last written value in sc */ 2101 sc->rf_regs[reg] = val; 2102 2103 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2104} 2105 2106static void 2107rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2108{ 2109 struct ifnet *ifp = sc->sc_ifp; 2110 struct ieee80211com *ic = ifp->if_l2com; 2111 uint8_t power, tmp; 2112 u_int i, chan; 2113 2114 chan = ieee80211_chan2ieee(ic, c); 2115 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2116 2117 if (IEEE80211_IS_CHAN_2GHZ(c)) 2118 power = min(sc->txpow[chan - 1], 31); 2119 else 2120 power = 31; 2121 2122 /* adjust txpower using ifconfig settings */ 2123 power -= (100 - ic->ic_txpowlimit) / 8; 2124 2125 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2126 2127 switch (sc->rf_rev) { 2128 case RT2560_RF_2522: 2129 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2130 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2131 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2132 break; 2133 2134 case RT2560_RF_2523: 2135 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2136 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2137 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2138 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2139 break; 2140 2141 case RT2560_RF_2524: 2142 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2143 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2144 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2145 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2146 break; 2147 2148 case RT2560_RF_2525: 2149 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2150 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2151 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2152 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2153 2154 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2155 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2156 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2157 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2158 break; 2159 2160 case RT2560_RF_2525E: 2161 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2162 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2163 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2164 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2165 break; 2166 2167 case RT2560_RF_2526: 2168 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2169 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2170 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2171 2172 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2173 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2174 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2175 break; 2176 2177 /* dual-band RF */ 2178 case RT2560_RF_5222: 2179 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2180 2181 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2182 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2183 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2184 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2185 break; 2186 default: 2187 printf("unknown ral rev=%d\n", sc->rf_rev); 2188 } 2189 2190 /* XXX */ 2191 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2192 /* set Japan filter bit for channel 14 */ 2193 tmp = rt2560_bbp_read(sc, 70); 2194 2195 tmp &= ~RT2560_JAPAN_FILTER; 2196 if (chan == 14) 2197 tmp |= RT2560_JAPAN_FILTER; 2198 2199 rt2560_bbp_write(sc, 70, tmp); 2200 2201 /* clear CRC errors */ 2202 RAL_READ(sc, RT2560_CNT0); 2203 } 2204} 2205 2206static void 2207rt2560_set_channel(struct ieee80211com *ic) 2208{ 2209 struct ifnet *ifp = ic->ic_ifp; 2210 struct rt2560_softc *sc = ifp->if_softc; 2211 2212 RAL_LOCK(sc); 2213 rt2560_set_chan(sc, ic->ic_curchan); 2214 RAL_UNLOCK(sc); 2215 2216} 2217 2218#if 0 2219/* 2220 * Disable RF auto-tuning. 2221 */ 2222static void 2223rt2560_disable_rf_tune(struct rt2560_softc *sc) 2224{ 2225 uint32_t tmp; 2226 2227 if (sc->rf_rev != RT2560_RF_2523) { 2228 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2229 rt2560_rf_write(sc, RAL_RF1, tmp); 2230 } 2231 2232 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2233 rt2560_rf_write(sc, RAL_RF3, tmp); 2234 2235 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2236} 2237#endif 2238 2239/* 2240 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2241 * synchronization. 2242 */ 2243static void 2244rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2245{ 2246 struct ifnet *ifp = sc->sc_ifp; 2247 struct ieee80211com *ic = ifp->if_l2com; 2248 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2249 uint16_t logcwmin, preload; 2250 uint32_t tmp; 2251 2252 /* first, disable TSF synchronization */ 2253 RAL_WRITE(sc, RT2560_CSR14, 0); 2254 2255 tmp = 16 * vap->iv_bss->ni_intval; 2256 RAL_WRITE(sc, RT2560_CSR12, tmp); 2257 2258 RAL_WRITE(sc, RT2560_CSR13, 0); 2259 2260 logcwmin = 5; 2261 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2262 tmp = logcwmin << 16 | preload; 2263 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2264 2265 /* finally, enable TSF synchronization */ 2266 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2267 if (ic->ic_opmode == IEEE80211_M_STA) 2268 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2269 else 2270 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2271 RT2560_ENABLE_BEACON_GENERATOR; 2272 RAL_WRITE(sc, RT2560_CSR14, tmp); 2273 2274 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2275} 2276 2277static void 2278rt2560_enable_tsf(struct rt2560_softc *sc) 2279{ 2280 RAL_WRITE(sc, RT2560_CSR14, 0); 2281 RAL_WRITE(sc, RT2560_CSR14, 2282 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2283} 2284 2285static void 2286rt2560_update_plcp(struct rt2560_softc *sc) 2287{ 2288 struct ifnet *ifp = sc->sc_ifp; 2289 struct ieee80211com *ic = ifp->if_l2com; 2290 2291 /* no short preamble for 1Mbps */ 2292 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2293 2294 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2295 /* values taken from the reference driver */ 2296 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2297 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2298 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2299 } else { 2300 /* same values as above or'ed 0x8 */ 2301 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2302 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2303 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2304 } 2305 2306 DPRINTF(sc, "updating PLCP for %s preamble\n", 2307 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2308} 2309 2310/* 2311 * This function can be called by ieee80211_set_shortslottime(). Refer to 2312 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2313 */ 2314static void 2315rt2560_update_slot(struct ifnet *ifp) 2316{ 2317 struct rt2560_softc *sc = ifp->if_softc; 2318 struct ieee80211com *ic = ifp->if_l2com; 2319 uint8_t slottime; 2320 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2321 uint32_t tmp; 2322 2323#ifndef FORCE_SLOTTIME 2324 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2325#else 2326 /* 2327 * Setting slot time according to "short slot time" capability 2328 * in beacon/probe_resp seems to cause problem to acknowledge 2329 * certain AP's data frames transimitted at CCK/DS rates: the 2330 * problematic AP keeps retransmitting data frames, probably 2331 * because MAC level acks are not received by hardware. 2332 * So we cheat a little bit here by claiming we are capable of 2333 * "short slot time" but setting hardware slot time to the normal 2334 * slot time. ral(4) does not seem to have trouble to receive 2335 * frames transmitted using short slot time even if hardware 2336 * slot time is set to normal slot time. If we didn't use this 2337 * trick, we would have to claim that short slot time is not 2338 * supported; this would give relative poor RX performance 2339 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2340 * slot time. 2341 */ 2342 slottime = 20; 2343#endif 2344 2345 /* update the MAC slot boundaries */ 2346 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2347 tx_pifs = tx_sifs + slottime; 2348 tx_difs = tx_sifs + 2 * slottime; 2349 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2350 2351 tmp = RAL_READ(sc, RT2560_CSR11); 2352 tmp = (tmp & ~0x1f00) | slottime << 8; 2353 RAL_WRITE(sc, RT2560_CSR11, tmp); 2354 2355 tmp = tx_pifs << 16 | tx_sifs; 2356 RAL_WRITE(sc, RT2560_CSR18, tmp); 2357 2358 tmp = eifs << 16 | tx_difs; 2359 RAL_WRITE(sc, RT2560_CSR19, tmp); 2360 2361 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2362} 2363 2364static void 2365rt2560_set_basicrates(struct rt2560_softc *sc) 2366{ 2367 struct ifnet *ifp = sc->sc_ifp; 2368 struct ieee80211com *ic = ifp->if_l2com; 2369 2370 /* update basic rate set */ 2371 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2372 /* 11b basic rates: 1, 2Mbps */ 2373 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2374 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2375 /* 11a basic rates: 6, 12, 24Mbps */ 2376 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2377 } else { 2378 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2379 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2380 } 2381} 2382 2383static void 2384rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2385{ 2386 uint32_t tmp; 2387 2388 /* set ON period to 70ms and OFF period to 30ms */ 2389 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2390 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2391} 2392 2393static void 2394rt2560_set_bssid(struct rt2560_softc *sc, const uint8_t *bssid) 2395{ 2396 uint32_t tmp; 2397 2398 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2399 RAL_WRITE(sc, RT2560_CSR5, tmp); 2400 2401 tmp = bssid[4] | bssid[5] << 8; 2402 RAL_WRITE(sc, RT2560_CSR6, tmp); 2403 2404 DPRINTF(sc, "setting BSSID to %6D\n", bssid, ":"); 2405} 2406 2407static void 2408rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2409{ 2410 uint32_t tmp; 2411 2412 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2413 RAL_WRITE(sc, RT2560_CSR3, tmp); 2414 2415 tmp = addr[4] | addr[5] << 8; 2416 RAL_WRITE(sc, RT2560_CSR4, tmp); 2417 2418 DPRINTF(sc, "setting MAC address to %6D\n", addr, ":"); 2419} 2420 2421static void 2422rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2423{ 2424 uint32_t tmp; 2425 2426 tmp = RAL_READ(sc, RT2560_CSR3); 2427 addr[0] = tmp & 0xff; 2428 addr[1] = (tmp >> 8) & 0xff; 2429 addr[2] = (tmp >> 16) & 0xff; 2430 addr[3] = (tmp >> 24); 2431 2432 tmp = RAL_READ(sc, RT2560_CSR4); 2433 addr[4] = tmp & 0xff; 2434 addr[5] = (tmp >> 8) & 0xff; 2435} 2436 2437static void 2438rt2560_update_promisc(struct ifnet *ifp) 2439{ 2440 struct rt2560_softc *sc = ifp->if_softc; 2441 uint32_t tmp; 2442 2443 tmp = RAL_READ(sc, RT2560_RXCSR0); 2444 2445 tmp &= ~RT2560_DROP_NOT_TO_ME; 2446 if (!(ifp->if_flags & IFF_PROMISC)) 2447 tmp |= RT2560_DROP_NOT_TO_ME; 2448 2449 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2450 2451 DPRINTF(sc, "%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2452 "entering" : "leaving"); 2453} 2454 2455static const char * 2456rt2560_get_rf(int rev) 2457{ 2458 switch (rev) { 2459 case RT2560_RF_2522: return "RT2522"; 2460 case RT2560_RF_2523: return "RT2523"; 2461 case RT2560_RF_2524: return "RT2524"; 2462 case RT2560_RF_2525: return "RT2525"; 2463 case RT2560_RF_2525E: return "RT2525e"; 2464 case RT2560_RF_2526: return "RT2526"; 2465 case RT2560_RF_5222: return "RT5222"; 2466 default: return "unknown"; 2467 } 2468} 2469 2470static void 2471rt2560_read_config(struct rt2560_softc *sc) 2472{ 2473 uint16_t val; 2474 int i; 2475 2476 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2477 sc->rf_rev = (val >> 11) & 0x7; 2478 sc->hw_radio = (val >> 10) & 0x1; 2479 sc->led_mode = (val >> 6) & 0x7; 2480 sc->rx_ant = (val >> 4) & 0x3; 2481 sc->tx_ant = (val >> 2) & 0x3; 2482 sc->nb_ant = val & 0x3; 2483 2484 /* read default values for BBP registers */ 2485 for (i = 0; i < 16; i++) { 2486 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2487 if (val == 0 || val == 0xffff) 2488 continue; 2489 2490 sc->bbp_prom[i].reg = val >> 8; 2491 sc->bbp_prom[i].val = val & 0xff; 2492 } 2493 2494 /* read Tx power for all b/g channels */ 2495 for (i = 0; i < 14 / 2; i++) { 2496 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2497 sc->txpow[i * 2] = val & 0xff; 2498 sc->txpow[i * 2 + 1] = val >> 8; 2499 } 2500 for (i = 0; i < 14; ++i) { 2501 if (sc->txpow[i] > 31) 2502 sc->txpow[i] = 24; 2503 } 2504 2505 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CALIBRATE); 2506 if ((val & 0xff) == 0xff) 2507 sc->rssi_corr = RT2560_DEFAULT_RSSI_CORR; 2508 else 2509 sc->rssi_corr = val & 0xff; 2510 DPRINTF(sc, "rssi correction %d, calibrate 0x%02x\n", 2511 sc->rssi_corr, val); 2512} 2513 2514 2515static void 2516rt2560_scan_start(struct ieee80211com *ic) 2517{ 2518 struct ifnet *ifp = ic->ic_ifp; 2519 struct rt2560_softc *sc = ifp->if_softc; 2520 2521 /* abort TSF synchronization */ 2522 RAL_WRITE(sc, RT2560_CSR14, 0); 2523 rt2560_set_bssid(sc, ifp->if_broadcastaddr); 2524} 2525 2526static void 2527rt2560_scan_end(struct ieee80211com *ic) 2528{ 2529 struct ifnet *ifp = ic->ic_ifp; 2530 struct rt2560_softc *sc = ifp->if_softc; 2531 struct ieee80211vap *vap = ic->ic_scan->ss_vap; 2532 2533 rt2560_enable_tsf_sync(sc); 2534 /* XXX keep local copy */ 2535 rt2560_set_bssid(sc, vap->iv_bss->ni_bssid); 2536} 2537 2538static int 2539rt2560_bbp_init(struct rt2560_softc *sc) 2540{ 2541#define N(a) (sizeof (a) / sizeof ((a)[0])) 2542 int i, ntries; 2543 2544 /* wait for BBP to be ready */ 2545 for (ntries = 0; ntries < 100; ntries++) { 2546 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2547 break; 2548 DELAY(1); 2549 } 2550 if (ntries == 100) { 2551 device_printf(sc->sc_dev, "timeout waiting for BBP\n"); 2552 return EIO; 2553 } 2554 2555 /* initialize BBP registers to default values */ 2556 for (i = 0; i < N(rt2560_def_bbp); i++) { 2557 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2558 rt2560_def_bbp[i].val); 2559 } 2560 2561 /* initialize BBP registers to values stored in EEPROM */ 2562 for (i = 0; i < 16; i++) { 2563 if (sc->bbp_prom[i].reg == 0 && sc->bbp_prom[i].val == 0) 2564 break; 2565 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2566 } 2567 rt2560_bbp_write(sc, 17, 0x48); /* XXX restore bbp17 */ 2568 2569 return 0; 2570#undef N 2571} 2572 2573static void 2574rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2575{ 2576 uint32_t tmp; 2577 uint8_t tx; 2578 2579 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2580 if (antenna == 1) 2581 tx |= RT2560_BBP_ANTA; 2582 else if (antenna == 2) 2583 tx |= RT2560_BBP_ANTB; 2584 else 2585 tx |= RT2560_BBP_DIVERSITY; 2586 2587 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2588 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2589 sc->rf_rev == RT2560_RF_5222) 2590 tx |= RT2560_BBP_FLIPIQ; 2591 2592 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2593 2594 /* update values for CCK and OFDM in BBPCSR1 */ 2595 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2596 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2597 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2598} 2599 2600static void 2601rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2602{ 2603 uint8_t rx; 2604 2605 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2606 if (antenna == 1) 2607 rx |= RT2560_BBP_ANTA; 2608 else if (antenna == 2) 2609 rx |= RT2560_BBP_ANTB; 2610 else 2611 rx |= RT2560_BBP_DIVERSITY; 2612 2613 /* need to force no I/Q flip for RF 2525e and 2526 */ 2614 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2615 rx &= ~RT2560_BBP_FLIPIQ; 2616 2617 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2618} 2619 2620static void 2621rt2560_init_locked(struct rt2560_softc *sc) 2622{ 2623#define N(a) (sizeof (a) / sizeof ((a)[0])) 2624 struct ifnet *ifp = sc->sc_ifp; 2625 struct ieee80211com *ic = ifp->if_l2com; 2626 uint32_t tmp; 2627 int i; 2628 2629 RAL_LOCK_ASSERT(sc); 2630 2631 rt2560_stop_locked(sc); 2632 2633 /* setup tx rings */ 2634 tmp = RT2560_PRIO_RING_COUNT << 24 | 2635 RT2560_ATIM_RING_COUNT << 16 | 2636 RT2560_TX_RING_COUNT << 8 | 2637 RT2560_TX_DESC_SIZE; 2638 2639 /* rings must be initialized in this exact order */ 2640 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2641 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2642 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2643 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2644 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2645 2646 /* setup rx ring */ 2647 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2648 2649 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2650 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2651 2652 /* initialize MAC registers to default values */ 2653 for (i = 0; i < N(rt2560_def_mac); i++) 2654 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2655 2656 rt2560_set_macaddr(sc, IF_LLADDR(ifp)); 2657 2658 /* set basic rate set (will be updated later) */ 2659 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2660 2661 rt2560_update_slot(ifp); 2662 rt2560_update_plcp(sc); 2663 rt2560_update_led(sc, 0, 0); 2664 2665 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2666 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2667 2668 if (rt2560_bbp_init(sc) != 0) { 2669 rt2560_stop(sc); 2670 RAL_UNLOCK(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 ifp->if_opackets++; 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 ifp->if_oerrors++; 2824 ieee80211_free_node(ni); 2825 RAL_UNLOCK(sc); 2826 return EIO; /* XXX */ 2827} 2828