rt2560.c revision 206358
1/* $FreeBSD: head/sys/dev/ral/rt2560.c 206358 2010-04-07 15:29:13Z 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 206358 2010-04-07 15:29:13Z 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 ni = NULL; 1012 1013 /* descriptor is no longer valid */ 1014 desc->flags &= ~htole32(RT2560_TX_VALID); 1015 1016 DPRINTFN(sc, 15, "tx done idx=%u\n", sc->txq.next); 1017 1018 sc->txq.queued--; 1019 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1020 } 1021 1022 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1023 BUS_DMASYNC_PREWRITE); 1024 1025 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1026 sc->sc_tx_timer = 0; 1027 1028 if (sc->txq.queued < RT2560_TX_RING_COUNT - 1) { 1029 sc->sc_flags &= ~RT2560_F_DATA_OACTIVE; 1030 if ((sc->sc_flags & 1031 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1032 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1033 rt2560_start_locked(ifp); 1034 } 1035} 1036 1037static void 1038rt2560_prio_intr(struct rt2560_softc *sc) 1039{ 1040 struct ifnet *ifp = sc->sc_ifp; 1041 struct rt2560_tx_desc *desc; 1042 struct rt2560_tx_data *data; 1043 struct ieee80211_node *ni; 1044 struct mbuf *m; 1045 int flags; 1046 1047 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1048 BUS_DMASYNC_POSTREAD); 1049 1050 for (;;) { 1051 desc = &sc->prioq.desc[sc->prioq.next]; 1052 data = &sc->prioq.data[sc->prioq.next]; 1053 1054 flags = le32toh(desc->flags); 1055 if ((flags & RT2560_TX_BUSY) || (flags & RT2560_TX_VALID) == 0) 1056 break; 1057 1058 switch (flags & RT2560_TX_RESULT_MASK) { 1059 case RT2560_TX_SUCCESS: 1060 DPRINTFN(sc, 10, "%s\n", "mgt frame sent successfully"); 1061 break; 1062 1063 case RT2560_TX_SUCCESS_RETRY: 1064 DPRINTFN(sc, 9, "mgt frame sent after %u retries\n", 1065 (flags >> 5) & 0x7); 1066 break; 1067 1068 case RT2560_TX_FAIL_RETRY: 1069 DPRINTFN(sc, 9, "%s\n", 1070 "sending mgt frame failed (too much retries)"); 1071 break; 1072 1073 case RT2560_TX_FAIL_INVALID: 1074 case RT2560_TX_FAIL_OTHER: 1075 default: 1076 device_printf(sc->sc_dev, "sending mgt frame failed " 1077 "0x%08x\n", flags); 1078 break; 1079 } 1080 1081 bus_dmamap_sync(sc->prioq.data_dmat, data->map, 1082 BUS_DMASYNC_POSTWRITE); 1083 bus_dmamap_unload(sc->prioq.data_dmat, data->map); 1084 1085 m = data->m; 1086 data->m = NULL; 1087 ni = data->ni; 1088 data->ni = NULL; 1089 1090 /* descriptor is no longer valid */ 1091 desc->flags &= ~htole32(RT2560_TX_VALID); 1092 1093 DPRINTFN(sc, 15, "prio done idx=%u\n", sc->prioq.next); 1094 1095 sc->prioq.queued--; 1096 sc->prioq.next = (sc->prioq.next + 1) % RT2560_PRIO_RING_COUNT; 1097 1098 if (m->m_flags & M_TXCB) 1099 ieee80211_process_callback(ni, m, 1100 (flags & RT2560_TX_RESULT_MASK) &~ 1101 (RT2560_TX_SUCCESS | RT2560_TX_SUCCESS_RETRY)); 1102 m_freem(m); 1103 ieee80211_free_node(ni); 1104 } 1105 1106 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1107 BUS_DMASYNC_PREWRITE); 1108 1109 if (sc->prioq.queued == 0 && sc->txq.queued == 0) 1110 sc->sc_tx_timer = 0; 1111 1112 if (sc->prioq.queued < RT2560_PRIO_RING_COUNT) { 1113 sc->sc_flags &= ~RT2560_F_PRIO_OACTIVE; 1114 if ((sc->sc_flags & 1115 (RT2560_F_DATA_OACTIVE | RT2560_F_PRIO_OACTIVE)) == 0) 1116 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1117 rt2560_start_locked(ifp); 1118 } 1119} 1120 1121/* 1122 * Some frames were processed by the hardware cipher engine and are ready for 1123 * handoff to the IEEE802.11 layer. 1124 */ 1125static void 1126rt2560_decryption_intr(struct rt2560_softc *sc) 1127{ 1128 struct ifnet *ifp = sc->sc_ifp; 1129 struct ieee80211com *ic = ifp->if_l2com; 1130 struct rt2560_rx_desc *desc; 1131 struct rt2560_rx_data *data; 1132 bus_addr_t physaddr; 1133 struct ieee80211_frame *wh; 1134 struct ieee80211_node *ni; 1135 struct mbuf *mnew, *m; 1136 int hw, error; 1137 int8_t rssi, nf; 1138 1139 /* retrieve last decriptor index processed by cipher engine */ 1140 hw = RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr; 1141 hw /= RT2560_RX_DESC_SIZE; 1142 1143 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1144 BUS_DMASYNC_POSTREAD); 1145 1146 for (; sc->rxq.cur_decrypt != hw;) { 1147 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1148 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1149 1150 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1151 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1152 break; 1153 1154 if (data->drop) { 1155 ifp->if_ierrors++; 1156 goto skip; 1157 } 1158 1159 if ((le32toh(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1160 (le32toh(desc->flags) & RT2560_RX_ICV_ERROR)) { 1161 ifp->if_ierrors++; 1162 goto skip; 1163 } 1164 1165 /* 1166 * Try to allocate a new mbuf for this ring element and load it 1167 * before processing the current mbuf. If the ring element 1168 * cannot be loaded, drop the received packet and reuse the old 1169 * mbuf. In the unlikely case that the old mbuf can't be 1170 * reloaded either, explicitly panic. 1171 */ 1172 mnew = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1173 if (mnew == NULL) { 1174 ifp->if_ierrors++; 1175 goto skip; 1176 } 1177 1178 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1179 BUS_DMASYNC_POSTREAD); 1180 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1181 1182 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1183 mtod(mnew, void *), MCLBYTES, rt2560_dma_map_addr, 1184 &physaddr, 0); 1185 if (error != 0) { 1186 m_freem(mnew); 1187 1188 /* try to reload the old mbuf */ 1189 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1190 mtod(data->m, void *), MCLBYTES, 1191 rt2560_dma_map_addr, &physaddr, 0); 1192 if (error != 0) { 1193 /* very unlikely that it will fail... */ 1194 panic("%s: could not load old rx mbuf", 1195 device_get_name(sc->sc_dev)); 1196 } 1197 ifp->if_ierrors++; 1198 goto skip; 1199 } 1200 1201 /* 1202 * New mbuf successfully loaded, update Rx ring and continue 1203 * processing. 1204 */ 1205 m = data->m; 1206 data->m = mnew; 1207 desc->physaddr = htole32(physaddr); 1208 1209 /* finalize mbuf */ 1210 m->m_pkthdr.rcvif = ifp; 1211 m->m_pkthdr.len = m->m_len = 1212 (le32toh(desc->flags) >> 16) & 0xfff; 1213 1214 rssi = RT2560_RSSI(sc, desc->rssi); 1215 nf = RT2560_NOISE_FLOOR; 1216 if (ieee80211_radiotap_active(ic)) { 1217 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1218 uint32_t tsf_lo, tsf_hi; 1219 1220 /* get timestamp (low and high 32 bits) */ 1221 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1222 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1223 1224 tap->wr_tsf = 1225 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1226 tap->wr_flags = 0; 1227 tap->wr_rate = ieee80211_plcp2rate(desc->rate, 1228 (desc->flags & htole32(RT2560_RX_OFDM)) ? 1229 IEEE80211_T_OFDM : IEEE80211_T_CCK); 1230 tap->wr_antenna = sc->rx_ant; 1231 tap->wr_antsignal = nf + rssi; 1232 tap->wr_antnoise = nf; 1233 } 1234 1235 sc->sc_flags |= RT2560_F_INPUT_RUNNING; 1236 RAL_UNLOCK(sc); 1237 wh = mtod(m, struct ieee80211_frame *); 1238 ni = ieee80211_find_rxnode(ic, 1239 (struct ieee80211_frame_min *)wh); 1240 if (ni != NULL) { 1241 (void) ieee80211_input(ni, m, rssi, nf); 1242 ieee80211_free_node(ni); 1243 } else 1244 (void) ieee80211_input_all(ic, m, rssi, nf); 1245 1246 RAL_LOCK(sc); 1247 sc->sc_flags &= ~RT2560_F_INPUT_RUNNING; 1248skip: desc->flags = htole32(RT2560_RX_BUSY); 1249 1250 DPRINTFN(sc, 15, "decryption done idx=%u\n", sc->rxq.cur_decrypt); 1251 1252 sc->rxq.cur_decrypt = 1253 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1254 } 1255 1256 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1257 BUS_DMASYNC_PREWRITE); 1258} 1259 1260/* 1261 * Some frames were received. Pass them to the hardware cipher engine before 1262 * sending them to the 802.11 layer. 1263 */ 1264static void 1265rt2560_rx_intr(struct rt2560_softc *sc) 1266{ 1267 struct rt2560_rx_desc *desc; 1268 struct rt2560_rx_data *data; 1269 1270 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1271 BUS_DMASYNC_POSTREAD); 1272 1273 for (;;) { 1274 desc = &sc->rxq.desc[sc->rxq.cur]; 1275 data = &sc->rxq.data[sc->rxq.cur]; 1276 1277 if ((le32toh(desc->flags) & RT2560_RX_BUSY) || 1278 (le32toh(desc->flags) & RT2560_RX_CIPHER_BUSY)) 1279 break; 1280 1281 data->drop = 0; 1282 1283 if ((le32toh(desc->flags) & RT2560_RX_PHY_ERROR) || 1284 (le32toh(desc->flags) & RT2560_RX_CRC_ERROR)) { 1285 /* 1286 * This should not happen since we did not request 1287 * to receive those frames when we filled RXCSR0. 1288 */ 1289 DPRINTFN(sc, 5, "PHY or CRC error flags 0x%08x\n", 1290 le32toh(desc->flags)); 1291 data->drop = 1; 1292 } 1293 1294 if (((le32toh(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1295 DPRINTFN(sc, 5, "%s\n", "bad length"); 1296 data->drop = 1; 1297 } 1298 1299 /* mark the frame for decryption */ 1300 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1301 1302 DPRINTFN(sc, 15, "rx done idx=%u\n", sc->rxq.cur); 1303 1304 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1305 } 1306 1307 bus_dmamap_sync(sc->rxq.desc_dmat, sc->rxq.desc_map, 1308 BUS_DMASYNC_PREWRITE); 1309 1310 /* kick decrypt */ 1311 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1312} 1313 1314static void 1315rt2560_beacon_update(struct ieee80211vap *vap, int item) 1316{ 1317 struct rt2560_vap *rvp = RT2560_VAP(vap); 1318 struct ieee80211_beacon_offsets *bo = &rvp->ral_bo; 1319 1320 setbit(bo->bo_flags, item); 1321} 1322 1323/* 1324 * This function is called periodically in IBSS mode when a new beacon must be 1325 * sent out. 1326 */ 1327static void 1328rt2560_beacon_expire(struct rt2560_softc *sc) 1329{ 1330 struct ifnet *ifp = sc->sc_ifp; 1331 struct ieee80211com *ic = ifp->if_l2com; 1332 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1333 struct rt2560_vap *rvp = RT2560_VAP(vap); 1334 struct rt2560_tx_data *data; 1335 1336 if (ic->ic_opmode != IEEE80211_M_IBSS && 1337 ic->ic_opmode != IEEE80211_M_HOSTAP && 1338 ic->ic_opmode != IEEE80211_M_MBSS) 1339 return; 1340 1341 data = &sc->bcnq.data[sc->bcnq.next]; 1342 /* 1343 * Don't send beacon if bsschan isn't set 1344 */ 1345 if (data->ni == NULL) 1346 return; 1347 1348 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1349 bus_dmamap_unload(sc->bcnq.data_dmat, data->map); 1350 1351 /* XXX 1 =>'s mcast frames which means all PS sta's will wakeup! */ 1352 ieee80211_beacon_update(data->ni, &rvp->ral_bo, data->m, 1); 1353 1354 rt2560_tx_bcn(sc, data->m, data->ni); 1355 1356 DPRINTFN(sc, 15, "%s", "beacon expired\n"); 1357 1358 sc->bcnq.next = (sc->bcnq.next + 1) % RT2560_BEACON_RING_COUNT; 1359} 1360 1361/* ARGSUSED */ 1362static void 1363rt2560_wakeup_expire(struct rt2560_softc *sc) 1364{ 1365 DPRINTFN(sc, 2, "%s", "wakeup expired\n"); 1366} 1367 1368void 1369rt2560_intr(void *arg) 1370{ 1371 struct rt2560_softc *sc = arg; 1372 struct ifnet *ifp = sc->sc_ifp; 1373 uint32_t r; 1374 1375 RAL_LOCK(sc); 1376 1377 /* disable interrupts */ 1378 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1379 1380 /* don't re-enable interrupts if we're shutting down */ 1381 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 1382 RAL_UNLOCK(sc); 1383 return; 1384 } 1385 1386 r = RAL_READ(sc, RT2560_CSR7); 1387 RAL_WRITE(sc, RT2560_CSR7, r); 1388 1389 if (r & RT2560_BEACON_EXPIRE) 1390 rt2560_beacon_expire(sc); 1391 1392 if (r & RT2560_WAKEUP_EXPIRE) 1393 rt2560_wakeup_expire(sc); 1394 1395 if (r & RT2560_ENCRYPTION_DONE) 1396 rt2560_encryption_intr(sc); 1397 1398 if (r & RT2560_TX_DONE) 1399 rt2560_tx_intr(sc); 1400 1401 if (r & RT2560_PRIO_DONE) 1402 rt2560_prio_intr(sc); 1403 1404 if (r & RT2560_DECRYPTION_DONE) 1405 rt2560_decryption_intr(sc); 1406 1407 if (r & RT2560_RX_DONE) { 1408 rt2560_rx_intr(sc); 1409 rt2560_encryption_intr(sc); 1410 } 1411 1412 /* re-enable interrupts */ 1413 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1414 1415 RAL_UNLOCK(sc); 1416} 1417 1418#define RAL_SIFS 10 /* us */ 1419 1420#define RT2560_TXRX_TURNAROUND 10 /* us */ 1421 1422static uint8_t 1423rt2560_plcp_signal(int rate) 1424{ 1425 switch (rate) { 1426 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1427 case 12: return 0xb; 1428 case 18: return 0xf; 1429 case 24: return 0xa; 1430 case 36: return 0xe; 1431 case 48: return 0x9; 1432 case 72: return 0xd; 1433 case 96: return 0x8; 1434 case 108: return 0xc; 1435 1436 /* CCK rates (NB: not IEEE std, device-specific) */ 1437 case 2: return 0x0; 1438 case 4: return 0x1; 1439 case 11: return 0x2; 1440 case 22: return 0x3; 1441 } 1442 return 0xff; /* XXX unsupported/unknown rate */ 1443} 1444 1445static void 1446rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1447 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1448{ 1449 struct ifnet *ifp = sc->sc_ifp; 1450 struct ieee80211com *ic = ifp->if_l2com; 1451 uint16_t plcp_length; 1452 int remainder; 1453 1454 desc->flags = htole32(flags); 1455 desc->flags |= htole32(len << 16); 1456 1457 desc->physaddr = htole32(physaddr); 1458 desc->wme = htole16( 1459 RT2560_AIFSN(2) | 1460 RT2560_LOGCWMIN(3) | 1461 RT2560_LOGCWMAX(8)); 1462 1463 /* setup PLCP fields */ 1464 desc->plcp_signal = rt2560_plcp_signal(rate); 1465 desc->plcp_service = 4; 1466 1467 len += IEEE80211_CRC_LEN; 1468 if (ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) { 1469 desc->flags |= htole32(RT2560_TX_OFDM); 1470 1471 plcp_length = len & 0xfff; 1472 desc->plcp_length_hi = plcp_length >> 6; 1473 desc->plcp_length_lo = plcp_length & 0x3f; 1474 } else { 1475 plcp_length = (16 * len + rate - 1) / rate; 1476 if (rate == 22) { 1477 remainder = (16 * len) % 22; 1478 if (remainder != 0 && remainder < 7) 1479 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1480 } 1481 desc->plcp_length_hi = plcp_length >> 8; 1482 desc->plcp_length_lo = plcp_length & 0xff; 1483 1484 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1485 desc->plcp_signal |= 0x08; 1486 } 1487 1488 if (!encrypt) 1489 desc->flags |= htole32(RT2560_TX_VALID); 1490 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) 1491 : htole32(RT2560_TX_BUSY); 1492} 1493 1494static int 1495rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1496 struct ieee80211_node *ni) 1497{ 1498 struct ieee80211vap *vap = ni->ni_vap; 1499 struct rt2560_tx_desc *desc; 1500 struct rt2560_tx_data *data; 1501 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1502 int nsegs, rate, error; 1503 1504 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1505 data = &sc->bcnq.data[sc->bcnq.cur]; 1506 1507 /* XXX maybe a separate beacon rate? */ 1508 rate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].mgmtrate; 1509 1510 error = bus_dmamap_load_mbuf_sg(sc->bcnq.data_dmat, data->map, m0, 1511 segs, &nsegs, BUS_DMA_NOWAIT); 1512 if (error != 0) { 1513 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1514 error); 1515 m_freem(m0); 1516 return error; 1517 } 1518 1519 if (ieee80211_radiotap_active_vap(vap)) { 1520 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1521 1522 tap->wt_flags = 0; 1523 tap->wt_rate = rate; 1524 tap->wt_antenna = sc->tx_ant; 1525 1526 ieee80211_radiotap_tx(vap, m0); 1527 } 1528 1529 data->m = m0; 1530 data->ni = ni; 1531 1532 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1533 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, segs->ds_addr); 1534 1535 DPRINTFN(sc, 10, "sending beacon frame len=%u idx=%u rate=%u\n", 1536 m0->m_pkthdr.len, sc->bcnq.cur, rate); 1537 1538 bus_dmamap_sync(sc->bcnq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1539 bus_dmamap_sync(sc->bcnq.desc_dmat, sc->bcnq.desc_map, 1540 BUS_DMASYNC_PREWRITE); 1541 1542 sc->bcnq.cur = (sc->bcnq.cur + 1) % RT2560_BEACON_RING_COUNT; 1543 1544 return 0; 1545} 1546 1547static int 1548rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1549 struct ieee80211_node *ni) 1550{ 1551 struct ieee80211vap *vap = ni->ni_vap; 1552 struct ieee80211com *ic = ni->ni_ic; 1553 struct rt2560_tx_desc *desc; 1554 struct rt2560_tx_data *data; 1555 struct ieee80211_frame *wh; 1556 struct ieee80211_key *k; 1557 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1558 uint16_t dur; 1559 uint32_t flags = 0; 1560 int nsegs, rate, error; 1561 1562 desc = &sc->prioq.desc[sc->prioq.cur]; 1563 data = &sc->prioq.data[sc->prioq.cur]; 1564 1565 rate = vap->iv_txparms[ieee80211_chan2mode(ic->ic_curchan)].mgmtrate; 1566 1567 wh = mtod(m0, struct ieee80211_frame *); 1568 1569 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1570 k = ieee80211_crypto_encap(ni, m0); 1571 if (k == NULL) { 1572 m_freem(m0); 1573 return ENOBUFS; 1574 } 1575 } 1576 1577 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1578 segs, &nsegs, 0); 1579 if (error != 0) { 1580 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1581 error); 1582 m_freem(m0); 1583 return error; 1584 } 1585 1586 if (ieee80211_radiotap_active_vap(vap)) { 1587 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1588 1589 tap->wt_flags = 0; 1590 tap->wt_rate = rate; 1591 tap->wt_antenna = sc->tx_ant; 1592 1593 ieee80211_radiotap_tx(vap, m0); 1594 } 1595 1596 data->m = m0; 1597 data->ni = ni; 1598 /* management frames are not taken into account for amrr */ 1599 data->rix = IEEE80211_FIXED_RATE_NONE; 1600 1601 wh = mtod(m0, struct ieee80211_frame *); 1602 1603 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1604 flags |= RT2560_TX_ACK; 1605 1606 dur = ieee80211_ack_duration(ic->ic_rt, 1607 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1608 *(uint16_t *)wh->i_dur = htole16(dur); 1609 1610 /* tell hardware to add timestamp for probe responses */ 1611 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 1612 IEEE80211_FC0_TYPE_MGT && 1613 (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) == 1614 IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1615 flags |= RT2560_TX_TIMESTAMP; 1616 } 1617 1618 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1619 segs->ds_addr); 1620 1621 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1622 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1623 BUS_DMASYNC_PREWRITE); 1624 1625 DPRINTFN(sc, 10, "sending mgt frame len=%u idx=%u rate=%u\n", 1626 m0->m_pkthdr.len, sc->prioq.cur, rate); 1627 1628 /* kick prio */ 1629 sc->prioq.queued++; 1630 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1631 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1632 1633 return 0; 1634} 1635 1636static int 1637rt2560_sendprot(struct rt2560_softc *sc, 1638 const struct mbuf *m, struct ieee80211_node *ni, int prot, int rate) 1639{ 1640 struct ieee80211com *ic = ni->ni_ic; 1641 const struct ieee80211_frame *wh; 1642 struct rt2560_tx_desc *desc; 1643 struct rt2560_tx_data *data; 1644 struct mbuf *mprot; 1645 int protrate, ackrate, pktlen, flags, isshort, error; 1646 uint16_t dur; 1647 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1648 int nsegs; 1649 1650 KASSERT(prot == IEEE80211_PROT_RTSCTS || prot == IEEE80211_PROT_CTSONLY, 1651 ("protection %d", prot)); 1652 1653 wh = mtod(m, const struct ieee80211_frame *); 1654 pktlen = m->m_pkthdr.len + IEEE80211_CRC_LEN; 1655 1656 protrate = ieee80211_ctl_rate(ic->ic_rt, rate); 1657 ackrate = ieee80211_ack_rate(ic->ic_rt, rate); 1658 1659 isshort = (ic->ic_flags & IEEE80211_F_SHPREAMBLE) != 0; 1660 dur = ieee80211_compute_duration(ic->ic_rt, pktlen, rate, isshort) 1661 + ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1662 flags = RT2560_TX_MORE_FRAG; 1663 if (prot == IEEE80211_PROT_RTSCTS) { 1664 /* NB: CTS is the same size as an ACK */ 1665 dur += ieee80211_ack_duration(ic->ic_rt, rate, isshort); 1666 flags |= RT2560_TX_ACK; 1667 mprot = ieee80211_alloc_rts(ic, wh->i_addr1, wh->i_addr2, dur); 1668 } else { 1669 mprot = ieee80211_alloc_cts(ic, ni->ni_vap->iv_myaddr, dur); 1670 } 1671 if (mprot == NULL) { 1672 /* XXX stat + msg */ 1673 return ENOBUFS; 1674 } 1675 1676 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1677 data = &sc->txq.data[sc->txq.cur_encrypt]; 1678 1679 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1680 mprot, segs, &nsegs, 0); 1681 if (error != 0) { 1682 device_printf(sc->sc_dev, 1683 "could not map mbuf (error %d)\n", error); 1684 m_freem(mprot); 1685 return error; 1686 } 1687 1688 data->m = mprot; 1689 data->ni = ieee80211_ref_node(ni); 1690 /* ctl frames are not taken into account for amrr */ 1691 data->rix = IEEE80211_FIXED_RATE_NONE; 1692 1693 rt2560_setup_tx_desc(sc, desc, flags, mprot->m_pkthdr.len, protrate, 1, 1694 segs->ds_addr); 1695 1696 bus_dmamap_sync(sc->txq.data_dmat, data->map, 1697 BUS_DMASYNC_PREWRITE); 1698 1699 sc->txq.queued++; 1700 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1701 1702 return 0; 1703} 1704 1705static int 1706rt2560_tx_raw(struct rt2560_softc *sc, struct mbuf *m0, 1707 struct ieee80211_node *ni, const struct ieee80211_bpf_params *params) 1708{ 1709 struct ieee80211vap *vap = ni->ni_vap; 1710 struct ieee80211com *ic = ni->ni_ic; 1711 struct rt2560_tx_desc *desc; 1712 struct rt2560_tx_data *data; 1713 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1714 uint32_t flags; 1715 int nsegs, rate, error; 1716 1717 desc = &sc->prioq.desc[sc->prioq.cur]; 1718 data = &sc->prioq.data[sc->prioq.cur]; 1719 1720 rate = params->ibp_rate0; 1721 if (!ieee80211_isratevalid(ic->ic_rt, rate)) { 1722 /* XXX fall back to mcast/mgmt rate? */ 1723 m_freem(m0); 1724 return EINVAL; 1725 } 1726 1727 flags = 0; 1728 if ((params->ibp_flags & IEEE80211_BPF_NOACK) == 0) 1729 flags |= RT2560_TX_ACK; 1730 if (params->ibp_flags & (IEEE80211_BPF_RTS|IEEE80211_BPF_CTS)) { 1731 error = rt2560_sendprot(sc, m0, ni, 1732 params->ibp_flags & IEEE80211_BPF_RTS ? 1733 IEEE80211_PROT_RTSCTS : IEEE80211_PROT_CTSONLY, 1734 rate); 1735 if (error) { 1736 m_freem(m0); 1737 return error; 1738 } 1739 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1740 } 1741 1742 error = bus_dmamap_load_mbuf_sg(sc->prioq.data_dmat, data->map, m0, 1743 segs, &nsegs, 0); 1744 if (error != 0) { 1745 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1746 error); 1747 m_freem(m0); 1748 return error; 1749 } 1750 1751 if (ieee80211_radiotap_active_vap(vap)) { 1752 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1753 1754 tap->wt_flags = 0; 1755 tap->wt_rate = rate; 1756 tap->wt_antenna = sc->tx_ant; 1757 1758 ieee80211_radiotap_tx(ni->ni_vap, m0); 1759 } 1760 1761 data->m = m0; 1762 data->ni = ni; 1763 1764 /* XXX need to setup descriptor ourself */ 1765 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, 1766 rate, (params->ibp_flags & IEEE80211_BPF_CRYPTO) != 0, 1767 segs->ds_addr); 1768 1769 bus_dmamap_sync(sc->prioq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1770 bus_dmamap_sync(sc->prioq.desc_dmat, sc->prioq.desc_map, 1771 BUS_DMASYNC_PREWRITE); 1772 1773 DPRINTFN(sc, 10, "sending raw frame len=%u idx=%u rate=%u\n", 1774 m0->m_pkthdr.len, sc->prioq.cur, rate); 1775 1776 /* kick prio */ 1777 sc->prioq.queued++; 1778 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1779 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1780 1781 return 0; 1782} 1783 1784static int 1785rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1786 struct ieee80211_node *ni) 1787{ 1788 struct ieee80211vap *vap = ni->ni_vap; 1789 struct ieee80211com *ic = ni->ni_ic; 1790 struct rt2560_tx_desc *desc; 1791 struct rt2560_tx_data *data; 1792 struct ieee80211_frame *wh; 1793 const struct ieee80211_txparam *tp; 1794 struct ieee80211_key *k; 1795 struct mbuf *mnew; 1796 bus_dma_segment_t segs[RT2560_MAX_SCATTER]; 1797 uint16_t dur; 1798 uint32_t flags; 1799 int nsegs, rate, error; 1800 1801 wh = mtod(m0, struct ieee80211_frame *); 1802 1803 tp = &vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)]; 1804 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1805 rate = tp->mcastrate; 1806 } else if (m0->m_flags & M_EAPOL) { 1807 rate = tp->mgmtrate; 1808 } else if (tp->ucastrate != IEEE80211_FIXED_RATE_NONE) { 1809 rate = tp->ucastrate; 1810 } else { 1811 (void) ieee80211_ratectl_rate(ni, NULL, 0); 1812 rate = ni->ni_txrate; 1813 } 1814 1815 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1816 k = ieee80211_crypto_encap(ni, m0); 1817 if (k == NULL) { 1818 m_freem(m0); 1819 return ENOBUFS; 1820 } 1821 1822 /* packet header may have moved, reset our local pointer */ 1823 wh = mtod(m0, struct ieee80211_frame *); 1824 } 1825 1826 flags = 0; 1827 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1828 int prot = IEEE80211_PROT_NONE; 1829 if (m0->m_pkthdr.len + IEEE80211_CRC_LEN > vap->iv_rtsthreshold) 1830 prot = IEEE80211_PROT_RTSCTS; 1831 else if ((ic->ic_flags & IEEE80211_F_USEPROT) && 1832 ieee80211_rate2phytype(ic->ic_rt, rate) == IEEE80211_T_OFDM) 1833 prot = ic->ic_protmode; 1834 if (prot != IEEE80211_PROT_NONE) { 1835 error = rt2560_sendprot(sc, m0, ni, prot, rate); 1836 if (error) { 1837 m_freem(m0); 1838 return error; 1839 } 1840 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1841 } 1842 } 1843 1844 data = &sc->txq.data[sc->txq.cur_encrypt]; 1845 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1846 1847 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, m0, 1848 segs, &nsegs, 0); 1849 if (error != 0 && error != EFBIG) { 1850 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1851 error); 1852 m_freem(m0); 1853 return error; 1854 } 1855 if (error != 0) { 1856 mnew = m_defrag(m0, M_DONTWAIT); 1857 if (mnew == NULL) { 1858 device_printf(sc->sc_dev, 1859 "could not defragment mbuf\n"); 1860 m_freem(m0); 1861 return ENOBUFS; 1862 } 1863 m0 = mnew; 1864 1865 error = bus_dmamap_load_mbuf_sg(sc->txq.data_dmat, data->map, 1866 m0, segs, &nsegs, 0); 1867 if (error != 0) { 1868 device_printf(sc->sc_dev, 1869 "could not map mbuf (error %d)\n", error); 1870 m_freem(m0); 1871 return error; 1872 } 1873 1874 /* packet header may have moved, reset our local pointer */ 1875 wh = mtod(m0, struct ieee80211_frame *); 1876 } 1877 1878 if (ieee80211_radiotap_active_vap(vap)) { 1879 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1880 1881 tap->wt_flags = 0; 1882 tap->wt_rate = rate; 1883 tap->wt_antenna = sc->tx_ant; 1884 1885 ieee80211_radiotap_tx(vap, m0); 1886 } 1887 1888 data->m = m0; 1889 data->ni = ni; 1890 1891 /* remember link conditions for rate adaptation algorithm */ 1892 if (tp->ucastrate == IEEE80211_FIXED_RATE_NONE) { 1893 data->rix = ni->ni_txrate; 1894 /* XXX probably need last rssi value and not avg */ 1895 data->rssi = ic->ic_node_getrssi(ni); 1896 } else 1897 data->rix = IEEE80211_FIXED_RATE_NONE; 1898 1899 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1900 flags |= RT2560_TX_ACK; 1901 1902 dur = ieee80211_ack_duration(ic->ic_rt, 1903 rate, ic->ic_flags & IEEE80211_F_SHPREAMBLE); 1904 *(uint16_t *)wh->i_dur = htole16(dur); 1905 } 1906 1907 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1908 segs->ds_addr); 1909 1910 bus_dmamap_sync(sc->txq.data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1911 bus_dmamap_sync(sc->txq.desc_dmat, sc->txq.desc_map, 1912 BUS_DMASYNC_PREWRITE); 1913 1914 DPRINTFN(sc, 10, "sending data frame len=%u idx=%u rate=%u\n", 1915 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate); 1916 1917 /* kick encrypt */ 1918 sc->txq.queued++; 1919 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1920 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1921 1922 return 0; 1923} 1924 1925static void 1926rt2560_start_locked(struct ifnet *ifp) 1927{ 1928 struct rt2560_softc *sc = ifp->if_softc; 1929 struct mbuf *m; 1930 struct ieee80211_node *ni; 1931 1932 RAL_LOCK_ASSERT(sc); 1933 1934 for (;;) { 1935 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1936 if (m == NULL) 1937 break; 1938 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 1939 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1940 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1941 sc->sc_flags |= RT2560_F_DATA_OACTIVE; 1942 break; 1943 } 1944 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1945 if (rt2560_tx_data(sc, m, ni) != 0) { 1946 ieee80211_free_node(ni); 1947 ifp->if_oerrors++; 1948 break; 1949 } 1950 1951 sc->sc_tx_timer = 5; 1952 } 1953} 1954 1955static void 1956rt2560_start(struct ifnet *ifp) 1957{ 1958 struct rt2560_softc *sc = ifp->if_softc; 1959 1960 RAL_LOCK(sc); 1961 rt2560_start_locked(ifp); 1962 RAL_UNLOCK(sc); 1963} 1964 1965static void 1966rt2560_watchdog(void *arg) 1967{ 1968 struct rt2560_softc *sc = arg; 1969 struct ifnet *ifp = sc->sc_ifp; 1970 1971 RAL_LOCK_ASSERT(sc); 1972 1973 KASSERT(ifp->if_drv_flags & IFF_DRV_RUNNING, ("not running")); 1974 1975 if (sc->sc_invalid) /* card ejected */ 1976 return; 1977 1978 rt2560_encryption_intr(sc); 1979 rt2560_tx_intr(sc); 1980 1981 if (sc->sc_tx_timer > 0 && --sc->sc_tx_timer == 0) { 1982 if_printf(ifp, "device timeout\n"); 1983 rt2560_init_locked(sc); 1984 ifp->if_oerrors++; 1985 /* NB: callout is reset in rt2560_init() */ 1986 return; 1987 } 1988 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 1989} 1990 1991static int 1992rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1993{ 1994 struct rt2560_softc *sc = ifp->if_softc; 1995 struct ieee80211com *ic = ifp->if_l2com; 1996 struct ifreq *ifr = (struct ifreq *) data; 1997 int error = 0, startall = 0; 1998 1999 switch (cmd) { 2000 case SIOCSIFFLAGS: 2001 RAL_LOCK(sc); 2002 if (ifp->if_flags & IFF_UP) { 2003 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 2004 rt2560_init_locked(sc); 2005 startall = 1; 2006 } else 2007 rt2560_update_promisc(ifp); 2008 } else { 2009 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2010 rt2560_stop_locked(sc); 2011 } 2012 RAL_UNLOCK(sc); 2013 if (startall) 2014 ieee80211_start_all(ic); 2015 break; 2016 case SIOCGIFMEDIA: 2017 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2018 break; 2019 case SIOCGIFADDR: 2020 error = ether_ioctl(ifp, cmd, data); 2021 break; 2022 default: 2023 error = EINVAL; 2024 break; 2025 } 2026 return error; 2027} 2028 2029static void 2030rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2031{ 2032 uint32_t tmp; 2033 int ntries; 2034 2035 for (ntries = 0; ntries < 100; ntries++) { 2036 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2037 break; 2038 DELAY(1); 2039 } 2040 if (ntries == 100) { 2041 device_printf(sc->sc_dev, "could not write to BBP\n"); 2042 return; 2043 } 2044 2045 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2046 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2047 2048 DPRINTFN(sc, 15, "BBP R%u <- 0x%02x\n", reg, val); 2049} 2050 2051static uint8_t 2052rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2053{ 2054 uint32_t val; 2055 int ntries; 2056 2057 for (ntries = 0; ntries < 100; ntries++) { 2058 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2059 break; 2060 DELAY(1); 2061 } 2062 if (ntries == 100) { 2063 device_printf(sc->sc_dev, "could not read from BBP\n"); 2064 return 0; 2065 } 2066 2067 val = RT2560_BBP_BUSY | reg << 8; 2068 RAL_WRITE(sc, RT2560_BBPCSR, val); 2069 2070 for (ntries = 0; ntries < 100; ntries++) { 2071 val = RAL_READ(sc, RT2560_BBPCSR); 2072 if (!(val & RT2560_BBP_BUSY)) 2073 return val & 0xff; 2074 DELAY(1); 2075 } 2076 2077 device_printf(sc->sc_dev, "could not read from BBP\n"); 2078 return 0; 2079} 2080 2081static void 2082rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2083{ 2084 uint32_t tmp; 2085 int ntries; 2086 2087 for (ntries = 0; ntries < 100; ntries++) { 2088 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2089 break; 2090 DELAY(1); 2091 } 2092 if (ntries == 100) { 2093 device_printf(sc->sc_dev, "could not write to RF\n"); 2094 return; 2095 } 2096 2097 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2098 (reg & 0x3); 2099 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2100 2101 /* remember last written value in sc */ 2102 sc->rf_regs[reg] = val; 2103 2104 DPRINTFN(sc, 15, "RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff); 2105} 2106 2107static void 2108rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2109{ 2110 struct ifnet *ifp = sc->sc_ifp; 2111 struct ieee80211com *ic = ifp->if_l2com; 2112 uint8_t power, tmp; 2113 u_int i, chan; 2114 2115 chan = ieee80211_chan2ieee(ic, c); 2116 KASSERT(chan != 0 && chan != IEEE80211_CHAN_ANY, ("chan 0x%x", chan)); 2117 2118 if (IEEE80211_IS_CHAN_2GHZ(c)) 2119 power = min(sc->txpow[chan - 1], 31); 2120 else 2121 power = 31; 2122 2123 /* adjust txpower using ifconfig settings */ 2124 power -= (100 - ic->ic_txpowlimit) / 8; 2125 2126 DPRINTFN(sc, 2, "setting channel to %u, txpower to %u\n", chan, power); 2127 2128 switch (sc->rf_rev) { 2129 case RT2560_RF_2522: 2130 rt2560_rf_write(sc, RAL_RF1, 0x00814); 2131 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2522_r2[chan - 1]); 2132 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2133 break; 2134 2135 case RT2560_RF_2523: 2136 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2137 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2523_r2[chan - 1]); 2138 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x38044); 2139 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2140 break; 2141 2142 case RT2560_RF_2524: 2143 rt2560_rf_write(sc, RAL_RF1, 0x0c808); 2144 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2524_r2[chan - 1]); 2145 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2146 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2147 break; 2148 2149 case RT2560_RF_2525: 2150 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2151 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2152 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2153 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2154 2155 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2156 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525_r2[chan - 1]); 2157 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2158 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00280 : 0x00286); 2159 break; 2160 2161 case RT2560_RF_2525E: 2162 rt2560_rf_write(sc, RAL_RF1, 0x08808); 2163 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2525e_r2[chan - 1]); 2164 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2165 rt2560_rf_write(sc, RAL_RF4, (chan == 14) ? 0x00286 : 0x00282); 2166 break; 2167 2168 case RT2560_RF_2526: 2169 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2170 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2171 rt2560_rf_write(sc, RAL_RF1, 0x08804); 2172 2173 rt2560_rf_write(sc, RAL_RF2, rt2560_rf2526_r2[chan - 1]); 2174 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x18044); 2175 rt2560_rf_write(sc, RAL_RF4, (chan & 1) ? 0x00386 : 0x00381); 2176 break; 2177 2178 /* dual-band RF */ 2179 case RT2560_RF_5222: 2180 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2181 2182 rt2560_rf_write(sc, RAL_RF1, rt2560_rf5222[i].r1); 2183 rt2560_rf_write(sc, RAL_RF2, rt2560_rf5222[i].r2); 2184 rt2560_rf_write(sc, RAL_RF3, power << 7 | 0x00040); 2185 rt2560_rf_write(sc, RAL_RF4, rt2560_rf5222[i].r4); 2186 break; 2187 default: 2188 printf("unknown ral rev=%d\n", sc->rf_rev); 2189 } 2190 2191 /* XXX */ 2192 if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) { 2193 /* set Japan filter bit for channel 14 */ 2194 tmp = rt2560_bbp_read(sc, 70); 2195 2196 tmp &= ~RT2560_JAPAN_FILTER; 2197 if (chan == 14) 2198 tmp |= RT2560_JAPAN_FILTER; 2199 2200 rt2560_bbp_write(sc, 70, tmp); 2201 2202 /* clear CRC errors */ 2203 RAL_READ(sc, RT2560_CNT0); 2204 } 2205} 2206 2207static void 2208rt2560_set_channel(struct ieee80211com *ic) 2209{ 2210 struct ifnet *ifp = ic->ic_ifp; 2211 struct rt2560_softc *sc = ifp->if_softc; 2212 2213 RAL_LOCK(sc); 2214 rt2560_set_chan(sc, ic->ic_curchan); 2215 RAL_UNLOCK(sc); 2216 2217} 2218 2219#if 0 2220/* 2221 * Disable RF auto-tuning. 2222 */ 2223static void 2224rt2560_disable_rf_tune(struct rt2560_softc *sc) 2225{ 2226 uint32_t tmp; 2227 2228 if (sc->rf_rev != RT2560_RF_2523) { 2229 tmp = sc->rf_regs[RAL_RF1] & ~RAL_RF1_AUTOTUNE; 2230 rt2560_rf_write(sc, RAL_RF1, tmp); 2231 } 2232 2233 tmp = sc->rf_regs[RAL_RF3] & ~RAL_RF3_AUTOTUNE; 2234 rt2560_rf_write(sc, RAL_RF3, tmp); 2235 2236 DPRINTFN(sc, 2, "%s", "disabling RF autotune\n"); 2237} 2238#endif 2239 2240/* 2241 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2242 * synchronization. 2243 */ 2244static void 2245rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2246{ 2247 struct ifnet *ifp = sc->sc_ifp; 2248 struct ieee80211com *ic = ifp->if_l2com; 2249 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2250 uint16_t logcwmin, preload; 2251 uint32_t tmp; 2252 2253 /* first, disable TSF synchronization */ 2254 RAL_WRITE(sc, RT2560_CSR14, 0); 2255 2256 tmp = 16 * vap->iv_bss->ni_intval; 2257 RAL_WRITE(sc, RT2560_CSR12, tmp); 2258 2259 RAL_WRITE(sc, RT2560_CSR13, 0); 2260 2261 logcwmin = 5; 2262 preload = (vap->iv_opmode == IEEE80211_M_STA) ? 384 : 1024; 2263 tmp = logcwmin << 16 | preload; 2264 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2265 2266 /* finally, enable TSF synchronization */ 2267 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2268 if (ic->ic_opmode == IEEE80211_M_STA) 2269 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2270 else 2271 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2272 RT2560_ENABLE_BEACON_GENERATOR; 2273 RAL_WRITE(sc, RT2560_CSR14, tmp); 2274 2275 DPRINTF(sc, "%s", "enabling TSF synchronization\n"); 2276} 2277 2278static void 2279rt2560_enable_tsf(struct rt2560_softc *sc) 2280{ 2281 RAL_WRITE(sc, RT2560_CSR14, 0); 2282 RAL_WRITE(sc, RT2560_CSR14, 2283 RT2560_ENABLE_TSF_SYNC(2) | RT2560_ENABLE_TSF); 2284} 2285 2286static void 2287rt2560_update_plcp(struct rt2560_softc *sc) 2288{ 2289 struct ifnet *ifp = sc->sc_ifp; 2290 struct ieee80211com *ic = ifp->if_l2com; 2291 2292 /* no short preamble for 1Mbps */ 2293 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2294 2295 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2296 /* values taken from the reference driver */ 2297 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2298 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2299 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2300 } else { 2301 /* same values as above or'ed 0x8 */ 2302 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2303 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2304 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2305 } 2306 2307 DPRINTF(sc, "updating PLCP for %s preamble\n", 2308 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long"); 2309} 2310 2311/* 2312 * This function can be called by ieee80211_set_shortslottime(). Refer to 2313 * IEEE Std 802.11-1999 pp. 85 to know how these values are computed. 2314 */ 2315static void 2316rt2560_update_slot(struct ifnet *ifp) 2317{ 2318 struct rt2560_softc *sc = ifp->if_softc; 2319 struct ieee80211com *ic = ifp->if_l2com; 2320 uint8_t slottime; 2321 uint16_t tx_sifs, tx_pifs, tx_difs, eifs; 2322 uint32_t tmp; 2323 2324#ifndef FORCE_SLOTTIME 2325 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2326#else 2327 /* 2328 * Setting slot time according to "short slot time" capability 2329 * in beacon/probe_resp seems to cause problem to acknowledge 2330 * certain AP's data frames transimitted at CCK/DS rates: the 2331 * problematic AP keeps retransmitting data frames, probably 2332 * because MAC level acks are not received by hardware. 2333 * So we cheat a little bit here by claiming we are capable of 2334 * "short slot time" but setting hardware slot time to the normal 2335 * slot time. ral(4) does not seem to have trouble to receive 2336 * frames transmitted using short slot time even if hardware 2337 * slot time is set to normal slot time. If we didn't use this 2338 * trick, we would have to claim that short slot time is not 2339 * supported; this would give relative poor RX performance 2340 * (-1Mb~-2Mb lower) and the _whole_ BSS would stop using short 2341 * slot time. 2342 */ 2343 slottime = 20; 2344#endif 2345 2346 /* update the MAC slot boundaries */ 2347 tx_sifs = RAL_SIFS - RT2560_TXRX_TURNAROUND; 2348 tx_pifs = tx_sifs + slottime; 2349 tx_difs = tx_sifs + 2 * slottime; 2350 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2351 2352 tmp = RAL_READ(sc, RT2560_CSR11); 2353 tmp = (tmp & ~0x1f00) | slottime << 8; 2354 RAL_WRITE(sc, RT2560_CSR11, tmp); 2355 2356 tmp = tx_pifs << 16 | tx_sifs; 2357 RAL_WRITE(sc, RT2560_CSR18, tmp); 2358 2359 tmp = eifs << 16 | tx_difs; 2360 RAL_WRITE(sc, RT2560_CSR19, tmp); 2361 2362 DPRINTF(sc, "setting slottime to %uus\n", slottime); 2363} 2364 2365static void 2366rt2560_set_basicrates(struct rt2560_softc *sc) 2367{ 2368 struct ifnet *ifp = sc->sc_ifp; 2369 struct ieee80211com *ic = ifp->if_l2com; 2370 2371 /* update basic rate set */ 2372 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2373 /* 11b basic rates: 1, 2Mbps */ 2374 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2375 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_curchan)) { 2376 /* 11a basic rates: 6, 12, 24Mbps */ 2377 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2378 } else { 2379 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2380 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2381 } 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(sc); 2671 RAL_UNLOCK(sc); 2672 return; 2673 } 2674 2675 rt2560_set_txantenna(sc, sc->tx_ant); 2676 rt2560_set_rxantenna(sc, sc->rx_ant); 2677 2678 /* set default BSS channel */ 2679 rt2560_set_chan(sc, ic->ic_curchan); 2680 2681 /* kick Rx */ 2682 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2683 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2684 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2685 if (ic->ic_opmode != IEEE80211_M_HOSTAP && 2686 ic->ic_opmode != IEEE80211_M_MBSS) 2687 tmp |= RT2560_DROP_TODS; 2688 if (!(ifp->if_flags & IFF_PROMISC)) 2689 tmp |= RT2560_DROP_NOT_TO_ME; 2690 } 2691 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2692 2693 /* clear old FCS and Rx FIFO errors */ 2694 RAL_READ(sc, RT2560_CNT0); 2695 RAL_READ(sc, RT2560_CNT4); 2696 2697 /* clear any pending interrupts */ 2698 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2699 2700 /* enable interrupts */ 2701 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2702 2703 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2704 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2705 2706 callout_reset(&sc->watchdog_ch, hz, rt2560_watchdog, sc); 2707#undef N 2708} 2709 2710static void 2711rt2560_init(void *priv) 2712{ 2713 struct rt2560_softc *sc = priv; 2714 struct ifnet *ifp = sc->sc_ifp; 2715 struct ieee80211com *ic = ifp->if_l2com; 2716 2717 RAL_LOCK(sc); 2718 rt2560_init_locked(sc); 2719 RAL_UNLOCK(sc); 2720 2721 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2722 ieee80211_start_all(ic); /* start all vap's */ 2723} 2724 2725static void 2726rt2560_stop_locked(struct rt2560_softc *sc) 2727{ 2728 struct ifnet *ifp = sc->sc_ifp; 2729 volatile int *flags = &sc->sc_flags; 2730 2731 RAL_LOCK_ASSERT(sc); 2732 2733 while (*flags & RT2560_F_INPUT_RUNNING) 2734 msleep(sc, &sc->sc_mtx, 0, "ralrunning", hz/10); 2735 2736 callout_stop(&sc->watchdog_ch); 2737 sc->sc_tx_timer = 0; 2738 2739 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2740 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2741 2742 /* abort Tx */ 2743 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_ABORT_TX); 2744 2745 /* disable Rx */ 2746 RAL_WRITE(sc, RT2560_RXCSR0, RT2560_DISABLE_RX); 2747 2748 /* reset ASIC (imply reset BBP) */ 2749 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2750 RAL_WRITE(sc, RT2560_CSR1, 0); 2751 2752 /* disable interrupts */ 2753 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 2754 2755 /* reset Tx and Rx rings */ 2756 rt2560_reset_tx_ring(sc, &sc->txq); 2757 rt2560_reset_tx_ring(sc, &sc->atimq); 2758 rt2560_reset_tx_ring(sc, &sc->prioq); 2759 rt2560_reset_tx_ring(sc, &sc->bcnq); 2760 rt2560_reset_rx_ring(sc, &sc->rxq); 2761 } 2762 sc->sc_flags &= ~(RT2560_F_PRIO_OACTIVE | RT2560_F_DATA_OACTIVE); 2763} 2764 2765void 2766rt2560_stop(void *arg) 2767{ 2768 struct rt2560_softc *sc = arg; 2769 2770 RAL_LOCK(sc); 2771 rt2560_stop_locked(sc); 2772 RAL_UNLOCK(sc); 2773} 2774 2775static int 2776rt2560_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 2777 const struct ieee80211_bpf_params *params) 2778{ 2779 struct ieee80211com *ic = ni->ni_ic; 2780 struct ifnet *ifp = ic->ic_ifp; 2781 struct rt2560_softc *sc = ifp->if_softc; 2782 2783 RAL_LOCK(sc); 2784 2785 /* prevent management frames from being sent if we're not ready */ 2786 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2787 RAL_UNLOCK(sc); 2788 m_freem(m); 2789 ieee80211_free_node(ni); 2790 return ENETDOWN; 2791 } 2792 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 2793 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2794 sc->sc_flags |= RT2560_F_PRIO_OACTIVE; 2795 RAL_UNLOCK(sc); 2796 m_freem(m); 2797 ieee80211_free_node(ni); 2798 return ENOBUFS; /* XXX */ 2799 } 2800 2801 ifp->if_opackets++; 2802 2803 if (params == NULL) { 2804 /* 2805 * Legacy path; interpret frame contents to decide 2806 * precisely how to send the frame. 2807 */ 2808 if (rt2560_tx_mgt(sc, m, ni) != 0) 2809 goto bad; 2810 } else { 2811 /* 2812 * Caller supplied explicit parameters to use in 2813 * sending the frame. 2814 */ 2815 if (rt2560_tx_raw(sc, m, ni, params)) 2816 goto bad; 2817 } 2818 sc->sc_tx_timer = 5; 2819 2820 RAL_UNLOCK(sc); 2821 2822 return 0; 2823bad: 2824 ifp->if_oerrors++; 2825 ieee80211_free_node(ni); 2826 RAL_UNLOCK(sc); 2827 return EIO; /* XXX */ 2828} 2829