rt2560.c revision 1.19
1/* $OpenBSD: rt2560.c,v 1.19 2006/06/14 19:31:47 damien Exp $ */ 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/*- 21 * Ralink Technology RT2560 chipset driver 22 * http://www.ralinktech.com/ 23 */ 24 25#include "bpfilter.h" 26 27#include <sys/param.h> 28#include <sys/sockio.h> 29#include <sys/sysctl.h> 30#include <sys/mbuf.h> 31#include <sys/kernel.h> 32#include <sys/socket.h> 33#include <sys/systm.h> 34#include <sys/malloc.h> 35#include <sys/timeout.h> 36#include <sys/conf.h> 37#include <sys/device.h> 38 39#include <machine/bus.h> 40#include <machine/endian.h> 41#include <machine/intr.h> 42 43#if NBPFILTER > 0 44#include <net/bpf.h> 45#endif 46#include <net/if.h> 47#include <net/if_arp.h> 48#include <net/if_dl.h> 49#include <net/if_media.h> 50#include <net/if_types.h> 51 52#include <netinet/in.h> 53#include <netinet/in_systm.h> 54#include <netinet/in_var.h> 55#include <netinet/if_ether.h> 56#include <netinet/ip.h> 57 58#include <net80211/ieee80211_var.h> 59#include <net80211/ieee80211_rssadapt.h> 60#include <net80211/ieee80211_radiotap.h> 61 62#include <dev/ic/rt2560reg.h> 63#include <dev/ic/rt2560var.h> 64 65#include <dev/pci/pcireg.h> 66#include <dev/pci/pcivar.h> 67#include <dev/pci/pcidevs.h> 68 69#ifdef RAL_DEBUG 70#define DPRINTF(x) do { if (rt2560_debug > 0) printf x; } while (0) 71#define DPRINTFN(n, x) do { if (rt2560_debug >= (n)) printf x; } while (0) 72int rt2560_debug = 1; 73#else 74#define DPRINTF(x) 75#define DPRINTFN(n, x) 76#endif 77 78int rt2560_alloc_tx_ring(struct rt2560_softc *, 79 struct rt2560_tx_ring *, int); 80void rt2560_reset_tx_ring(struct rt2560_softc *, 81 struct rt2560_tx_ring *); 82void rt2560_free_tx_ring(struct rt2560_softc *, 83 struct rt2560_tx_ring *); 84int rt2560_alloc_rx_ring(struct rt2560_softc *, 85 struct rt2560_rx_ring *, int); 86void rt2560_reset_rx_ring(struct rt2560_softc *, 87 struct rt2560_rx_ring *); 88void rt2560_free_rx_ring(struct rt2560_softc *, 89 struct rt2560_rx_ring *); 90struct ieee80211_node *rt2560_node_alloc(struct ieee80211com *); 91void rt2560_node_copy(struct ieee80211com *ic, 92 struct ieee80211_node *, const struct ieee80211_node *); 93int rt2560_media_change(struct ifnet *); 94void rt2560_next_scan(void *); 95void rt2560_iter_func(void *, struct ieee80211_node *); 96void rt2560_rssadapt_updatestats(void *); 97int rt2560_newstate(struct ieee80211com *, enum ieee80211_state, 98 int); 99uint16_t rt2560_eeprom_read(struct rt2560_softc *, uint8_t); 100void rt2560_encryption_intr(struct rt2560_softc *); 101void rt2560_tx_intr(struct rt2560_softc *); 102void rt2560_prio_intr(struct rt2560_softc *); 103void rt2560_decryption_intr(struct rt2560_softc *); 104void rt2560_rx_intr(struct rt2560_softc *); 105void rt2560_beacon_expire(struct rt2560_softc *); 106void rt2560_wakeup_expire(struct rt2560_softc *); 107#if NBPFILTER > 0 108uint8_t rt2560_rxrate(struct rt2560_rx_desc *); 109#endif 110int rt2560_ack_rate(struct ieee80211com *, int); 111uint16_t rt2560_txtime(int, int, uint32_t); 112uint8_t rt2560_plcp_signal(int); 113void rt2560_setup_tx_desc(struct rt2560_softc *, 114 struct rt2560_tx_desc *, uint32_t, int, int, int, 115 bus_addr_t); 116int rt2560_tx_bcn(struct rt2560_softc *, struct mbuf *, 117 struct ieee80211_node *); 118int rt2560_tx_mgt(struct rt2560_softc *, struct mbuf *, 119 struct ieee80211_node *); 120struct mbuf *rt2560_get_rts(struct rt2560_softc *, 121 struct ieee80211_frame *, uint16_t); 122int rt2560_tx_data(struct rt2560_softc *, struct mbuf *, 123 struct ieee80211_node *); 124void rt2560_start(struct ifnet *); 125void rt2560_watchdog(struct ifnet *); 126int rt2560_ioctl(struct ifnet *, u_long, caddr_t); 127void rt2560_bbp_write(struct rt2560_softc *, uint8_t, uint8_t); 128uint8_t rt2560_bbp_read(struct rt2560_softc *, uint8_t); 129void rt2560_rf_write(struct rt2560_softc *, uint8_t, uint32_t); 130void rt2560_set_chan(struct rt2560_softc *, 131 struct ieee80211_channel *); 132void rt2560_disable_rf_tune(struct rt2560_softc *); 133void rt2560_enable_tsf_sync(struct rt2560_softc *); 134void rt2560_update_plcp(struct rt2560_softc *); 135void rt2560_update_slot(struct rt2560_softc *); 136void rt2560_set_basicrates(struct rt2560_softc *); 137void rt2560_update_led(struct rt2560_softc *, int, int); 138void rt2560_set_bssid(struct rt2560_softc *, uint8_t *); 139void rt2560_set_macaddr(struct rt2560_softc *, uint8_t *); 140void rt2560_get_macaddr(struct rt2560_softc *, uint8_t *); 141void rt2560_update_promisc(struct rt2560_softc *); 142void rt2560_set_txantenna(struct rt2560_softc *, int); 143void rt2560_set_rxantenna(struct rt2560_softc *, int); 144const char *rt2560_get_rf(int); 145void rt2560_read_eeprom(struct rt2560_softc *); 146int rt2560_bbp_init(struct rt2560_softc *); 147int rt2560_init(struct ifnet *); 148void rt2560_stop(struct ifnet *, int); 149void rt2560_power(int, void *); 150 151/* 152 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 153 */ 154static const struct ieee80211_rateset rt2560_rateset_11a = 155 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 156 157static const struct ieee80211_rateset rt2560_rateset_11b = 158 { 4, { 2, 4, 11, 22 } }; 159 160static const struct ieee80211_rateset rt2560_rateset_11g = 161 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 162 163static const struct { 164 uint32_t reg; 165 uint32_t val; 166} rt2560_def_mac[] = { 167 RT2560_DEF_MAC 168}; 169 170static const struct { 171 uint8_t reg; 172 uint8_t val; 173} rt2560_def_bbp[] = { 174 RT2560_DEF_BBP 175}; 176 177static const uint32_t rt2560_rf2522_r2[] = RT2560_RF2522_R2; 178static const uint32_t rt2560_rf2523_r2[] = RT2560_RF2523_R2; 179static const uint32_t rt2560_rf2524_r2[] = RT2560_RF2524_R2; 180static const uint32_t rt2560_rf2525_r2[] = RT2560_RF2525_R2; 181static const uint32_t rt2560_rf2525_hi_r2[] = RT2560_RF2525_HI_R2; 182static const uint32_t rt2560_rf2525e_r2[] = RT2560_RF2525E_R2; 183static const uint32_t rt2560_rf2526_r2[] = RT2560_RF2526_R2; 184static const uint32_t rt2560_rf2526_hi_r2[] = RT2560_RF2526_HI_R2; 185 186static const struct { 187 uint8_t chan; 188 uint32_t r1, r2, r4; 189} rt2560_rf5222[] = { 190 RT2560_RF5222 191}; 192 193int 194rt2560_attach(void *xsc, int id) 195{ 196 struct rt2560_softc *sc = xsc; 197 struct ieee80211com *ic = &sc->sc_ic; 198 struct ifnet *ifp = &ic->ic_if; 199 int error, i; 200 201 timeout_set(&sc->scan_ch, rt2560_next_scan, sc); 202 timeout_set(&sc->rssadapt_ch, rt2560_rssadapt_updatestats, sc); 203 204 /* retrieve RT2560 rev. no */ 205 sc->asic_rev = RAL_READ(sc, RT2560_CSR0); 206 207 /* retrieve MAC address */ 208 rt2560_get_macaddr(sc, ic->ic_myaddr); 209 printf(", address %s\n", ether_sprintf(ic->ic_myaddr)); 210 211 /* retrieve RF rev. no and various other things from EEPROM */ 212 rt2560_read_eeprom(sc); 213 214 printf("%s: MAC/BBP RT2560 (rev 0x%02x), RF %s\n", sc->sc_dev.dv_xname, 215 sc->asic_rev, rt2560_get_rf(sc->rf_rev)); 216 217 /* 218 * Allocate Tx and Rx rings. 219 */ 220 error = rt2560_alloc_tx_ring(sc, &sc->txq, RT2560_TX_RING_COUNT); 221 if (error != 0) { 222 printf("%s: could not allocate Tx ring\n", 223 sc->sc_dev.dv_xname); 224 goto fail1; 225 } 226 227 error = rt2560_alloc_tx_ring(sc, &sc->atimq, RT2560_ATIM_RING_COUNT); 228 if (error != 0) { 229 printf("%s: could not allocate ATIM ring\n", 230 sc->sc_dev.dv_xname); 231 goto fail2; 232 } 233 234 error = rt2560_alloc_tx_ring(sc, &sc->prioq, RT2560_PRIO_RING_COUNT); 235 if (error != 0) { 236 printf("%s: could not allocate Prio ring\n", 237 sc->sc_dev.dv_xname); 238 goto fail3; 239 } 240 241 error = rt2560_alloc_tx_ring(sc, &sc->bcnq, RT2560_BEACON_RING_COUNT); 242 if (error != 0) { 243 printf("%s: could not allocate Beacon ring\n", 244 sc->sc_dev.dv_xname); 245 goto fail4; 246 } 247 248 error = rt2560_alloc_rx_ring(sc, &sc->rxq, RT2560_RX_RING_COUNT); 249 if (error != 0) { 250 printf("%s: could not allocate Rx ring\n", 251 sc->sc_dev.dv_xname); 252 goto fail5; 253 } 254 255 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 256 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 257 ic->ic_state = IEEE80211_S_INIT; 258 259 /* set device capabilities */ 260 ic->ic_caps = 261 IEEE80211_C_IBSS | /* IBSS mode supported */ 262 IEEE80211_C_MONITOR | /* monitor mode supported */ 263 IEEE80211_C_HOSTAP | /* HostAp mode supported */ 264 IEEE80211_C_TXPMGT | /* tx power management */ 265 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 266 IEEE80211_C_SHSLOT | /* short slot time supported */ 267 IEEE80211_C_WEP; /* s/w WEP */ 268 269 if (sc->rf_rev == RT2560_RF_5222) { 270 /* set supported .11a rates */ 271 ic->ic_sup_rates[IEEE80211_MODE_11A] = rt2560_rateset_11a; 272 273 /* set supported .11a channels */ 274 for (i = 36; i <= 64; i += 4) { 275 ic->ic_channels[i].ic_freq = 276 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 277 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 278 } 279 for (i = 100; i <= 140; i += 4) { 280 ic->ic_channels[i].ic_freq = 281 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 282 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 283 } 284 for (i = 149; i <= 161; i += 4) { 285 ic->ic_channels[i].ic_freq = 286 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 287 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 288 } 289 } 290 291 /* set supported .11b and .11g rates */ 292 ic->ic_sup_rates[IEEE80211_MODE_11B] = rt2560_rateset_11b; 293 ic->ic_sup_rates[IEEE80211_MODE_11G] = rt2560_rateset_11g; 294 295 /* set supported .11b and .11g channels (1 through 14) */ 296 for (i = 1; i <= 14; i++) { 297 ic->ic_channels[i].ic_freq = 298 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 299 ic->ic_channels[i].ic_flags = 300 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 301 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 302 } 303 304 ifp->if_softc = sc; 305 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 306 ifp->if_init = rt2560_init; 307 ifp->if_ioctl = rt2560_ioctl; 308 ifp->if_start = rt2560_start; 309 ifp->if_watchdog = rt2560_watchdog; 310 IFQ_SET_READY(&ifp->if_snd); 311 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 312 313 if_attach(ifp); 314 ieee80211_ifattach(ifp); 315 ic->ic_node_alloc = rt2560_node_alloc; 316 ic->ic_node_copy = rt2560_node_copy; 317 318 /* override state transition machine */ 319 sc->sc_newstate = ic->ic_newstate; 320 ic->ic_newstate = rt2560_newstate; 321 ieee80211_media_init(ifp, rt2560_media_change, ieee80211_media_status); 322 323#if NBPFILTER > 0 324 bpfattach(&sc->sc_drvbpf, ifp, DLT_IEEE802_11_RADIO, 325 sizeof (struct ieee80211_frame) + 64); 326 327 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 328 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 329 sc->sc_rxtap.wr_ihdr.it_present = htole32(RT2560_RX_RADIOTAP_PRESENT); 330 331 sc->sc_txtap_len = sizeof sc->sc_txtapu; 332 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 333 sc->sc_txtap.wt_ihdr.it_present = htole32(RT2560_TX_RADIOTAP_PRESENT); 334#endif 335 336 /* 337 * Make sure the interface is shutdown during reboot. 338 */ 339 sc->sc_sdhook = shutdownhook_establish(rt2560_shutdown, sc); 340 if (sc->sc_sdhook == NULL) 341 printf(": WARNING: unable to establish shutdown hook\n"); 342 sc->sc_powerhook = powerhook_establish(rt2560_power, sc); 343 if (sc->sc_powerhook == NULL) 344 printf(": WARNING: unable to establish power hook\n"); 345 346 return 0; 347 348fail5: rt2560_free_tx_ring(sc, &sc->bcnq); 349fail4: rt2560_free_tx_ring(sc, &sc->prioq); 350fail3: rt2560_free_tx_ring(sc, &sc->atimq); 351fail2: rt2560_free_tx_ring(sc, &sc->txq); 352fail1: return ENXIO; 353} 354 355int 356rt2560_detach(void *xsc) 357{ 358 struct rt2560_softc *sc = xsc; 359 struct ifnet *ifp = &sc->sc_ic.ic_if; 360 361 timeout_del(&sc->scan_ch); 362 timeout_del(&sc->rssadapt_ch); 363 364 ieee80211_ifdetach(ifp); /* free all nodes */ 365 if_detach(ifp); 366 367 if (sc->sc_powerhook != NULL) 368 powerhook_disestablish(sc->sc_powerhook); 369 if (sc->sc_sdhook != NULL) 370 shutdownhook_disestablish(sc->sc_sdhook); 371 372 rt2560_free_tx_ring(sc, &sc->txq); 373 rt2560_free_tx_ring(sc, &sc->atimq); 374 rt2560_free_tx_ring(sc, &sc->prioq); 375 rt2560_free_tx_ring(sc, &sc->bcnq); 376 rt2560_free_rx_ring(sc, &sc->rxq); 377 378 return 0; 379} 380 381int 382rt2560_alloc_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring, 383 int count) 384{ 385 int i, nsegs, error; 386 387 ring->count = count; 388 ring->queued = 0; 389 ring->cur = ring->next = 0; 390 ring->cur_encrypt = ring->next_encrypt = 0; 391 392 error = bus_dmamap_create(sc->sc_dmat, count * RT2560_TX_DESC_SIZE, 1, 393 count * RT2560_TX_DESC_SIZE, 0, BUS_DMA_NOWAIT, &ring->map); 394 if (error != 0) { 395 printf("%s: could not create desc DMA map\n", 396 sc->sc_dev.dv_xname); 397 goto fail; 398 } 399 400 error = bus_dmamem_alloc(sc->sc_dmat, count * RT2560_TX_DESC_SIZE, 401 PAGE_SIZE, 0, &ring->seg, 1, &nsegs, BUS_DMA_NOWAIT); 402 if (error != 0) { 403 printf("%s: could not allocate DMA memory\n", 404 sc->sc_dev.dv_xname); 405 goto fail; 406 } 407 408 error = bus_dmamem_map(sc->sc_dmat, &ring->seg, nsegs, 409 count * RT2560_TX_DESC_SIZE, (caddr_t *)&ring->desc, 410 BUS_DMA_NOWAIT); 411 if (error != 0) { 412 printf("%s: could not map desc DMA memory\n", 413 sc->sc_dev.dv_xname); 414 goto fail; 415 } 416 417 error = bus_dmamap_load(sc->sc_dmat, ring->map, ring->desc, 418 count * RT2560_TX_DESC_SIZE, NULL, BUS_DMA_NOWAIT); 419 if (error != 0) { 420 printf("%s: could not load desc DMA map\n", 421 sc->sc_dev.dv_xname); 422 goto fail; 423 } 424 425 memset(ring->desc, 0, count * RT2560_TX_DESC_SIZE); 426 ring->physaddr = ring->map->dm_segs->ds_addr; 427 428 ring->data = malloc(count * sizeof (struct rt2560_tx_data), M_DEVBUF, 429 M_NOWAIT); 430 if (ring->data == NULL) { 431 printf("%s: could not allocate soft data\n", 432 sc->sc_dev.dv_xname); 433 error = ENOMEM; 434 goto fail; 435 } 436 437 memset(ring->data, 0, count * sizeof (struct rt2560_tx_data)); 438 for (i = 0; i < count; i++) { 439 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 440 RT2560_MAX_SCATTER, MCLBYTES, 0, BUS_DMA_NOWAIT, 441 &ring->data[i].map); 442 if (error != 0) { 443 printf("%s: could not create DMA map\n", 444 sc->sc_dev.dv_xname); 445 goto fail; 446 } 447 } 448 449 return 0; 450 451fail: rt2560_free_tx_ring(sc, ring); 452 return error; 453} 454 455void 456rt2560_reset_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 457{ 458 struct rt2560_tx_desc *desc; 459 struct rt2560_tx_data *data; 460 int i; 461 462 for (i = 0; i < ring->count; i++) { 463 desc = &ring->desc[i]; 464 data = &ring->data[i]; 465 466 if (data->m != NULL) { 467 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 468 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 469 bus_dmamap_unload(sc->sc_dmat, data->map); 470 m_freem(data->m); 471 data->m = NULL; 472 } 473 474 /* 475 * The node has already been freed at that point so don't call 476 * ieee80211_release_node() here. 477 */ 478 data->ni = NULL; 479 480 desc->flags = 0; 481 } 482 483 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, ring->map->dm_mapsize, 484 BUS_DMASYNC_PREWRITE); 485 486 ring->queued = 0; 487 ring->cur = ring->next = 0; 488 ring->cur_encrypt = ring->next_encrypt = 0; 489} 490 491void 492rt2560_free_tx_ring(struct rt2560_softc *sc, struct rt2560_tx_ring *ring) 493{ 494 struct rt2560_tx_data *data; 495 int i; 496 497 if (ring->desc != NULL) { 498 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, 499 ring->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 500 bus_dmamap_unload(sc->sc_dmat, ring->map); 501 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 502 ring->count * RT2560_TX_DESC_SIZE); 503 bus_dmamem_free(sc->sc_dmat, &ring->seg, 1); 504 } 505 506 if (ring->data != NULL) { 507 for (i = 0; i < ring->count; i++) { 508 data = &ring->data[i]; 509 510 if (data->m != NULL) { 511 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 512 data->map->dm_mapsize, 513 BUS_DMASYNC_POSTWRITE); 514 bus_dmamap_unload(sc->sc_dmat, data->map); 515 m_freem(data->m); 516 } 517 518 /* 519 * The node has already been freed at that point so 520 * don't call ieee80211_release_node() here. 521 */ 522 data->ni = NULL; 523 524 if (data->map != NULL) 525 bus_dmamap_destroy(sc->sc_dmat, data->map); 526 } 527 free(ring->data, M_DEVBUF); 528 } 529} 530 531int 532rt2560_alloc_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring, 533 int count) 534{ 535 struct rt2560_rx_desc *desc; 536 struct rt2560_rx_data *data; 537 int i, nsegs, error; 538 539 ring->count = count; 540 ring->cur = ring->next = 0; 541 ring->cur_decrypt = 0; 542 543 error = bus_dmamap_create(sc->sc_dmat, count * RT2560_RX_DESC_SIZE, 1, 544 count * RT2560_RX_DESC_SIZE, 0, BUS_DMA_NOWAIT, &ring->map); 545 if (error != 0) { 546 printf("%s: could not create desc DMA map\n", 547 sc->sc_dev.dv_xname); 548 goto fail; 549 } 550 551 error = bus_dmamem_alloc(sc->sc_dmat, count * RT2560_RX_DESC_SIZE, 552 PAGE_SIZE, 0, &ring->seg, 1, &nsegs, BUS_DMA_NOWAIT); 553 if (error != 0) { 554 printf("%s: could not allocate DMA memory\n", 555 sc->sc_dev.dv_xname); 556 goto fail; 557 } 558 559 error = bus_dmamem_map(sc->sc_dmat, &ring->seg, nsegs, 560 count * RT2560_RX_DESC_SIZE, (caddr_t *)&ring->desc, 561 BUS_DMA_NOWAIT); 562 if (error != 0) { 563 printf("%s: could not map desc DMA memory\n", 564 sc->sc_dev.dv_xname); 565 goto fail; 566 } 567 568 error = bus_dmamap_load(sc->sc_dmat, ring->map, ring->desc, 569 count * RT2560_RX_DESC_SIZE, NULL, BUS_DMA_NOWAIT); 570 if (error != 0) { 571 printf("%s: could not load desc DMA map\n", 572 sc->sc_dev.dv_xname); 573 goto fail; 574 } 575 576 memset(ring->desc, 0, count * RT2560_RX_DESC_SIZE); 577 ring->physaddr = ring->map->dm_segs->ds_addr; 578 579 ring->data = malloc(count * sizeof (struct rt2560_rx_data), M_DEVBUF, 580 M_NOWAIT); 581 if (ring->data == NULL) { 582 printf("%s: could not allocate soft data\n", 583 sc->sc_dev.dv_xname); 584 error = ENOMEM; 585 goto fail; 586 } 587 588 /* 589 * Pre-allocate Rx buffers and populate Rx ring. 590 */ 591 memset(ring->data, 0, count * sizeof (struct rt2560_rx_data)); 592 for (i = 0; i < count; i++) { 593 desc = &sc->rxq.desc[i]; 594 data = &sc->rxq.data[i]; 595 596 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 597 0, BUS_DMA_NOWAIT, &data->map); 598 if (error != 0) { 599 printf("%s: could not create DMA map\n", 600 sc->sc_dev.dv_xname); 601 goto fail; 602 } 603 604 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 605 if (data->m == NULL) { 606 printf("%s: could not allocate rx mbuf\n", 607 sc->sc_dev.dv_xname); 608 error = ENOMEM; 609 goto fail; 610 } 611 612 MCLGET(data->m, M_DONTWAIT); 613 if (!(data->m->m_flags & M_EXT)) { 614 printf("%s: could not allocate rx mbuf cluster\n", 615 sc->sc_dev.dv_xname); 616 error = ENOMEM; 617 goto fail; 618 } 619 620 error = bus_dmamap_load(sc->sc_dmat, data->map, 621 mtod(data->m, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 622 if (error != 0) { 623 printf("%s: could not load rx buf DMA map", 624 sc->sc_dev.dv_xname); 625 goto fail; 626 } 627 628 desc->flags = htole32(RT2560_RX_BUSY); 629 desc->physaddr = htole32(data->map->dm_segs->ds_addr); 630 } 631 632 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, ring->map->dm_mapsize, 633 BUS_DMASYNC_PREWRITE); 634 635 return 0; 636 637fail: rt2560_free_rx_ring(sc, ring); 638 return error; 639} 640 641void 642rt2560_reset_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 643{ 644 int i; 645 646 for (i = 0; i < ring->count; i++) { 647 ring->desc[i].flags = htole32(RT2560_RX_BUSY); 648 ring->data[i].drop = 0; 649 } 650 651 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, ring->map->dm_mapsize, 652 BUS_DMASYNC_PREWRITE); 653 654 ring->cur = ring->next = 0; 655 ring->cur_decrypt = 0; 656} 657 658void 659rt2560_free_rx_ring(struct rt2560_softc *sc, struct rt2560_rx_ring *ring) 660{ 661 struct rt2560_rx_data *data; 662 int i; 663 664 if (ring->desc != NULL) { 665 bus_dmamap_sync(sc->sc_dmat, ring->map, 0, 666 ring->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 667 bus_dmamap_unload(sc->sc_dmat, ring->map); 668 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 669 ring->count * RT2560_RX_DESC_SIZE); 670 bus_dmamem_free(sc->sc_dmat, &ring->seg, 1); 671 } 672 673 if (ring->data != NULL) { 674 for (i = 0; i < ring->count; i++) { 675 data = &ring->data[i]; 676 677 if (data->m != NULL) { 678 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 679 data->map->dm_mapsize, 680 BUS_DMASYNC_POSTREAD); 681 bus_dmamap_unload(sc->sc_dmat, data->map); 682 m_freem(data->m); 683 } 684 685 if (data->map != NULL) 686 bus_dmamap_destroy(sc->sc_dmat, data->map); 687 } 688 free(ring->data, M_DEVBUF); 689 } 690} 691 692struct ieee80211_node * 693rt2560_node_alloc(struct ieee80211com *ic) 694{ 695 struct rt2560_node *rn; 696 697 rn = malloc(sizeof (struct rt2560_node), M_DEVBUF, M_NOWAIT); 698 if (rn == NULL) 699 return NULL; 700 701 memset(rn, 0, sizeof (struct rt2560_node)); 702 703 return &rn->ni; 704} 705 706void 707rt2560_node_copy(struct ieee80211com *ic, struct ieee80211_node *dst, 708 const struct ieee80211_node *src) 709{ 710 *(struct rt2560_node *)dst = *(const struct rt2560_node *)src; 711} 712 713int 714rt2560_media_change(struct ifnet *ifp) 715{ 716 int error; 717 718 error = ieee80211_media_change(ifp); 719 if (error != ENETRESET) 720 return error; 721 722 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 723 rt2560_init(ifp); 724 725 return 0; 726} 727 728/* 729 * This function is called periodically (every 200ms) during scanning to 730 * switch from one channel to another. 731 */ 732void 733rt2560_next_scan(void *arg) 734{ 735 struct rt2560_softc *sc = arg; 736 struct ieee80211com *ic = &sc->sc_ic; 737 struct ifnet *ifp = &ic->ic_if; 738 739 if (ic->ic_state == IEEE80211_S_SCAN) 740 ieee80211_next_scan(ifp); 741} 742 743/* 744 * This function is called for each neighbor node. 745 */ 746void 747rt2560_iter_func(void *arg, struct ieee80211_node *ni) 748{ 749 struct rt2560_node *rn = (struct rt2560_node *)ni; 750 751 ieee80211_rssadapt_updatestats(&rn->rssadapt); 752} 753 754/* 755 * This function is called periodically (every 100ms) in RUN state to update 756 * the rate control statistics. 757 */ 758void 759rt2560_rssadapt_updatestats(void *arg) 760{ 761 struct rt2560_softc *sc = arg; 762 struct ieee80211com *ic = &sc->sc_ic; 763 764 ieee80211_iterate_nodes(ic, rt2560_iter_func, arg); 765 766 timeout_add(&sc->rssadapt_ch, hz / 10); 767} 768 769int 770rt2560_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 771{ 772 struct rt2560_softc *sc = ic->ic_if.if_softc; 773 enum ieee80211_state ostate; 774 struct ieee80211_node *ni; 775 struct mbuf *m; 776 int error = 0; 777 778 ostate = ic->ic_state; 779 timeout_del(&sc->scan_ch); 780 781 switch (nstate) { 782 case IEEE80211_S_INIT: 783 timeout_del(&sc->rssadapt_ch); 784 785 if (ostate == IEEE80211_S_RUN) { 786 /* abort TSF synchronization */ 787 RAL_WRITE(sc, RT2560_CSR14, 0); 788 789 /* turn association led off */ 790 rt2560_update_led(sc, 0, 0); 791 } 792 break; 793 794 case IEEE80211_S_SCAN: 795 rt2560_set_chan(sc, ic->ic_bss->ni_chan); 796 timeout_add(&sc->scan_ch, hz / 5); 797 break; 798 799 case IEEE80211_S_AUTH: 800 rt2560_set_chan(sc, ic->ic_bss->ni_chan); 801 break; 802 803 case IEEE80211_S_ASSOC: 804 rt2560_set_chan(sc, ic->ic_bss->ni_chan); 805 break; 806 807 case IEEE80211_S_RUN: 808 rt2560_set_chan(sc, ic->ic_bss->ni_chan); 809 810 ni = ic->ic_bss; 811 812 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 813 rt2560_update_slot(sc); 814 rt2560_set_basicrates(sc); 815 rt2560_set_bssid(sc, ni->ni_bssid); 816 } 817 818 if (ic->ic_opmode == IEEE80211_M_HOSTAP || 819 ic->ic_opmode == IEEE80211_M_IBSS) { 820 m = ieee80211_beacon_alloc(ic, ni); 821 if (m == NULL) { 822 printf("%s: could not allocate beacon\n", 823 sc->sc_dev.dv_xname); 824 error = ENOBUFS; 825 break; 826 } 827 828 error = rt2560_tx_bcn(sc, m, ni); 829 if (error != 0) 830 break; 831 } 832 833 /* turn assocation led on */ 834 rt2560_update_led(sc, 1, 0); 835 836 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 837 timeout_add(&sc->rssadapt_ch, hz / 10); 838 rt2560_enable_tsf_sync(sc); 839 } 840 break; 841 } 842 843 return (error != 0) ? error : sc->sc_newstate(ic, nstate, arg); 844} 845 846/* 847 * Read 16 bits at address 'addr' from the serial EEPROM (either 93C46 or 848 * 93C66). 849 */ 850uint16_t 851rt2560_eeprom_read(struct rt2560_softc *sc, uint8_t addr) 852{ 853 uint32_t tmp; 854 uint16_t val; 855 int n; 856 857 /* clock C once before the first command */ 858 RT2560_EEPROM_CTL(sc, 0); 859 860 RT2560_EEPROM_CTL(sc, RT2560_S); 861 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 862 RT2560_EEPROM_CTL(sc, RT2560_S); 863 864 /* write start bit (1) */ 865 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 866 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 867 868 /* write READ opcode (10) */ 869 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D); 870 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_D | RT2560_C); 871 RT2560_EEPROM_CTL(sc, RT2560_S); 872 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 873 874 /* write address (A5-A0 or A7-A0) */ 875 n = (RAL_READ(sc, RT2560_CSR21) & RT2560_93C46) ? 5 : 7; 876 for (; n >= 0; n--) { 877 RT2560_EEPROM_CTL(sc, RT2560_S | 878 (((addr >> n) & 1) << RT2560_SHIFT_D)); 879 RT2560_EEPROM_CTL(sc, RT2560_S | 880 (((addr >> n) & 1) << RT2560_SHIFT_D) | RT2560_C); 881 } 882 883 RT2560_EEPROM_CTL(sc, RT2560_S); 884 885 /* read data Q15-Q0 */ 886 val = 0; 887 for (n = 15; n >= 0; n--) { 888 RT2560_EEPROM_CTL(sc, RT2560_S | RT2560_C); 889 tmp = RAL_READ(sc, RT2560_CSR21); 890 val |= ((tmp & RT2560_Q) >> RT2560_SHIFT_Q) << n; 891 RT2560_EEPROM_CTL(sc, RT2560_S); 892 } 893 894 RT2560_EEPROM_CTL(sc, 0); 895 896 /* clear Chip Select and clock C */ 897 RT2560_EEPROM_CTL(sc, RT2560_S); 898 RT2560_EEPROM_CTL(sc, 0); 899 RT2560_EEPROM_CTL(sc, RT2560_C); 900 901 return val; 902} 903 904/* 905 * Some frames were processed by the hardware cipher engine and are ready for 906 * transmission. 907 */ 908void 909rt2560_encryption_intr(struct rt2560_softc *sc) 910{ 911 struct rt2560_tx_desc *desc; 912 int hw; 913 914 /* retrieve last descriptor index processed by cipher engine */ 915 hw = (RAL_READ(sc, RT2560_SECCSR1) - sc->txq.physaddr) / 916 RT2560_TX_DESC_SIZE; 917 918 for (; sc->txq.next_encrypt != hw;) { 919 desc = &sc->txq.desc[sc->txq.next_encrypt]; 920 921 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 922 sc->txq.next_encrypt * RT2560_TX_DESC_SIZE, 923 RT2560_TX_DESC_SIZE, BUS_DMASYNC_POSTREAD); 924 925 if (letoh32(desc->flags) & 926 (RT2560_TX_BUSY | RT2560_TX_CIPHER_BUSY)) 927 break; 928 929 /* for TKIP, swap eiv field to fix a bug in ASIC */ 930 if ((letoh32(desc->flags) & RT2560_TX_CIPHER_MASK) == 931 RT2560_TX_CIPHER_TKIP) 932 desc->eiv = swap32(desc->eiv); 933 934 /* mark the frame ready for transmission */ 935 desc->flags |= htole32(RT2560_TX_BUSY | RT2560_TX_VALID); 936 937 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 938 sc->txq.next_encrypt * RT2560_TX_DESC_SIZE, 939 RT2560_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 940 941 DPRINTFN(15, ("encryption done idx=%u\n", 942 sc->txq.next_encrypt)); 943 944 sc->txq.next_encrypt = 945 (sc->txq.next_encrypt + 1) % RT2560_TX_RING_COUNT; 946 } 947 948 /* kick Tx */ 949 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_TX); 950} 951 952void 953rt2560_tx_intr(struct rt2560_softc *sc) 954{ 955 struct ieee80211com *ic = &sc->sc_ic; 956 struct ifnet *ifp = &ic->ic_if; 957 struct rt2560_tx_desc *desc; 958 struct rt2560_tx_data *data; 959 struct rt2560_node *rn; 960 961 for (;;) { 962 desc = &sc->txq.desc[sc->txq.next]; 963 data = &sc->txq.data[sc->txq.next]; 964 965 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 966 sc->txq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 967 BUS_DMASYNC_POSTREAD); 968 969 if ((letoh32(desc->flags) & RT2560_TX_BUSY) || 970 (letoh32(desc->flags) & RT2560_TX_CIPHER_BUSY) || 971 !(letoh32(desc->flags) & RT2560_TX_VALID)) 972 break; 973 974 rn = (struct rt2560_node *)data->ni; 975 976 switch (letoh32(desc->flags) & RT2560_TX_RESULT_MASK) { 977 case RT2560_TX_SUCCESS: 978 DPRINTFN(10, ("data frame sent successfully\n")); 979 if (data->id.id_node != NULL) { 980 ieee80211_rssadapt_raise_rate(ic, 981 &rn->rssadapt, &data->id); 982 } 983 ifp->if_opackets++; 984 break; 985 986 case RT2560_TX_SUCCESS_RETRY: 987 DPRINTFN(9, ("data frame sent after %u retries\n", 988 (letoh32(desc->flags) >> 5) & 0x7)); 989 ifp->if_opackets++; 990 break; 991 992 case RT2560_TX_FAIL_RETRY: 993 DPRINTFN(9, ("sending data frame failed (too much " 994 "retries)\n")); 995 if (data->id.id_node != NULL) { 996 ieee80211_rssadapt_lower_rate(ic, data->ni, 997 &rn->rssadapt, &data->id); 998 } 999 ifp->if_oerrors++; 1000 break; 1001 1002 case RT2560_TX_FAIL_INVALID: 1003 case RT2560_TX_FAIL_OTHER: 1004 default: 1005 printf("%s: sending data frame failed 0x%08x\n", 1006 sc->sc_dev.dv_xname, letoh32(desc->flags)); 1007 ifp->if_oerrors++; 1008 } 1009 1010 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1011 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1012 bus_dmamap_unload(sc->sc_dmat, data->map); 1013 m_freem(data->m); 1014 data->m = NULL; 1015 ieee80211_release_node(ic, data->ni); 1016 data->ni = NULL; 1017 1018 /* descriptor is no longer valid */ 1019 desc->flags &= ~htole32(RT2560_TX_VALID); 1020 1021 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1022 sc->txq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1023 BUS_DMASYNC_PREWRITE); 1024 1025 DPRINTFN(15, ("tx done idx=%u\n", sc->txq.next)); 1026 1027 sc->txq.queued--; 1028 sc->txq.next = (sc->txq.next + 1) % RT2560_TX_RING_COUNT; 1029 } 1030 1031 sc->sc_tx_timer = 0; 1032 ifp->if_flags &= ~IFF_OACTIVE; 1033 rt2560_start(ifp); 1034} 1035 1036void 1037rt2560_prio_intr(struct rt2560_softc *sc) 1038{ 1039 struct ieee80211com *ic = &sc->sc_ic; 1040 struct ifnet *ifp = &ic->ic_if; 1041 struct rt2560_tx_desc *desc; 1042 struct rt2560_tx_data *data; 1043 1044 for (;;) { 1045 desc = &sc->prioq.desc[sc->prioq.next]; 1046 data = &sc->prioq.data[sc->prioq.next]; 1047 1048 bus_dmamap_sync(sc->sc_dmat, sc->prioq.map, 1049 sc->prioq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1050 BUS_DMASYNC_POSTREAD); 1051 1052 if ((letoh32(desc->flags) & RT2560_TX_BUSY) || 1053 !(letoh32(desc->flags) & RT2560_TX_VALID)) 1054 break; 1055 1056 switch (letoh32(desc->flags) & RT2560_TX_RESULT_MASK) { 1057 case RT2560_TX_SUCCESS: 1058 DPRINTFN(10, ("mgt frame sent successfully\n")); 1059 break; 1060 1061 case RT2560_TX_SUCCESS_RETRY: 1062 DPRINTFN(9, ("mgt frame sent after %u retries\n", 1063 (letoh32(desc->flags) >> 5) & 0x7)); 1064 break; 1065 1066 case RT2560_TX_FAIL_RETRY: 1067 DPRINTFN(9, ("sending mgt frame failed (too much " 1068 "retries)\n")); 1069 break; 1070 1071 case RT2560_TX_FAIL_INVALID: 1072 case RT2560_TX_FAIL_OTHER: 1073 default: 1074 printf("%s: sending mgt frame failed 0x%08x\n", 1075 sc->sc_dev.dv_xname, letoh32(desc->flags)); 1076 } 1077 1078 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1079 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1080 bus_dmamap_unload(sc->sc_dmat, data->map); 1081 m_freem(data->m); 1082 data->m = NULL; 1083 ieee80211_release_node(ic, data->ni); 1084 data->ni = NULL; 1085 1086 /* descriptor is no longer valid */ 1087 desc->flags &= ~htole32(RT2560_TX_VALID); 1088 1089 bus_dmamap_sync(sc->sc_dmat, sc->prioq.map, 1090 sc->prioq.next * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1091 BUS_DMASYNC_PREWRITE); 1092 1093 DPRINTFN(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 1099 sc->sc_tx_timer = 0; 1100 ifp->if_flags &= ~IFF_OACTIVE; 1101 rt2560_start(ifp); 1102} 1103 1104/* 1105 * Some frames were processed by the hardware cipher engine and are ready for 1106 * transmission to the IEEE802.11 layer. 1107 */ 1108void 1109rt2560_decryption_intr(struct rt2560_softc *sc) 1110{ 1111 struct ieee80211com *ic = &sc->sc_ic; 1112 struct ifnet *ifp = &ic->ic_if; 1113 struct rt2560_rx_desc *desc; 1114 struct rt2560_rx_data *data; 1115 struct rt2560_node *rn; 1116 struct ieee80211_frame *wh; 1117 struct ieee80211_node *ni; 1118 struct mbuf *mnew, *m; 1119 int hw, error; 1120 1121 /* retrieve last decriptor index processed by cipher engine */ 1122 hw = (RAL_READ(sc, RT2560_SECCSR0) - sc->rxq.physaddr) / 1123 RT2560_RX_DESC_SIZE; 1124 1125 for (; sc->rxq.cur_decrypt != hw;) { 1126 desc = &sc->rxq.desc[sc->rxq.cur_decrypt]; 1127 data = &sc->rxq.data[sc->rxq.cur_decrypt]; 1128 1129 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1130 sc->rxq.cur_decrypt * RT2560_TX_DESC_SIZE, 1131 RT2560_TX_DESC_SIZE, BUS_DMASYNC_POSTREAD); 1132 1133 if (letoh32(desc->flags) & 1134 (RT2560_RX_BUSY | RT2560_RX_CIPHER_BUSY)) 1135 break; 1136 1137 if (data->drop) { 1138 ifp->if_ierrors++; 1139 goto skip; 1140 } 1141 1142 if ((letoh32(desc->flags) & RT2560_RX_CIPHER_MASK) != 0 && 1143 (letoh32(desc->flags) & RT2560_RX_ICV_ERROR)) { 1144 ifp->if_ierrors++; 1145 goto skip; 1146 } 1147 1148 /* 1149 * Try to allocate a new mbuf for this ring element and load it 1150 * before processing the current mbuf. If the ring element 1151 * cannot be loaded, drop the received packet and reuse the old 1152 * mbuf. In the unlikely case that the old mbuf can't be 1153 * reloaded either, explicitly panic. 1154 */ 1155 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1156 if (mnew == NULL) { 1157 ifp->if_ierrors++; 1158 goto skip; 1159 } 1160 1161 MCLGET(mnew, M_DONTWAIT); 1162 if (!(mnew->m_flags & M_EXT)) { 1163 m_freem(mnew); 1164 ifp->if_ierrors++; 1165 goto skip; 1166 } 1167 1168 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1169 data->map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1170 bus_dmamap_unload(sc->sc_dmat, data->map); 1171 1172 error = bus_dmamap_load(sc->sc_dmat, data->map, 1173 mtod(mnew, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 1174 if (error != 0) { 1175 m_freem(mnew); 1176 1177 /* try to reload the old mbuf */ 1178 error = bus_dmamap_load(sc->sc_dmat, data->map, 1179 mtod(data->m, void *), MCLBYTES, NULL, 1180 BUS_DMA_NOWAIT); 1181 if (error != 0) { 1182 /* very unlikely that it will fail... */ 1183 panic("%s: could not load old rx mbuf", 1184 sc->sc_dev.dv_xname); 1185 } 1186 ifp->if_ierrors++; 1187 goto skip; 1188 } 1189 1190 /* 1191 * New mbuf successfully loaded, update Rx ring and continue 1192 * processing. 1193 */ 1194 m = data->m; 1195 data->m = mnew; 1196 desc->physaddr = htole32(data->map->dm_segs->ds_addr); 1197 1198 /* finalize mbuf */ 1199 m->m_pkthdr.rcvif = ifp; 1200 m->m_pkthdr.len = m->m_len = 1201 (letoh32(desc->flags) >> 16) & 0xfff; 1202 1203#if NBPFILTER > 0 1204 if (sc->sc_drvbpf != NULL) { 1205 struct mbuf mb; 1206 struct rt2560_rx_radiotap_header *tap = &sc->sc_rxtap; 1207 uint32_t tsf_lo, tsf_hi; 1208 1209 /* get timestamp (low and high 32 bits) */ 1210 tsf_hi = RAL_READ(sc, RT2560_CSR17); 1211 tsf_lo = RAL_READ(sc, RT2560_CSR16); 1212 1213 tap->wr_tsf = 1214 htole64(((uint64_t)tsf_hi << 32) | tsf_lo); 1215 tap->wr_flags = 0; 1216 tap->wr_rate = rt2560_rxrate(desc); 1217 tap->wr_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1218 tap->wr_chan_flags = 1219 htole16(ic->ic_ibss_chan->ic_flags); 1220 tap->wr_antenna = sc->rx_ant; 1221 tap->wr_antsignal = desc->rssi; 1222 1223 M_DUP_PKTHDR(&mb, m); 1224 mb.m_data = (caddr_t)tap; 1225 mb.m_len = sc->sc_txtap_len; 1226 mb.m_next = m; 1227 mb.m_pkthdr.len += mb.m_len; 1228 bpf_mtap(sc->sc_drvbpf, &mb, BPF_DIRECTION_IN); 1229 } 1230#endif 1231 1232 wh = mtod(m, struct ieee80211_frame *); 1233 ni = ieee80211_find_rxnode(ic, wh); 1234 1235 /* send the frame to the 802.11 layer */ 1236 ieee80211_input(ifp, m, ni, desc->rssi, 0); 1237 1238 /* give rssi to the rate control algorithm */ 1239 rn = (struct rt2560_node *)ni; 1240 ieee80211_rssadapt_input(ic, ni, &rn->rssadapt, desc->rssi); 1241 1242 /* node is no longer needed */ 1243 ieee80211_release_node(ic, ni); 1244 1245skip: desc->flags = htole32(RT2560_RX_BUSY); 1246 1247 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1248 sc->rxq.cur_decrypt * RT2560_TX_DESC_SIZE, 1249 RT2560_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1250 1251 DPRINTFN(15, ("decryption done idx=%u\n", sc->rxq.cur_decrypt)); 1252 1253 sc->rxq.cur_decrypt = 1254 (sc->rxq.cur_decrypt + 1) % RT2560_RX_RING_COUNT; 1255 } 1256 1257 /* 1258 * In HostAP mode, ieee80211_input() will enqueue packets in if_snd 1259 * without calling if_start(). 1260 */ 1261 if (!IFQ_IS_EMPTY(&ifp->if_snd) && !(ifp->if_flags & IFF_OACTIVE)) 1262 rt2560_start(ifp); 1263} 1264 1265/* 1266 * Some frames were received. Pass them to the hardware cipher engine before 1267 * sending them to the 802.11 layer. 1268 */ 1269void 1270rt2560_rx_intr(struct rt2560_softc *sc) 1271{ 1272 struct rt2560_rx_desc *desc; 1273 struct rt2560_rx_data *data; 1274 1275 for (;;) { 1276 desc = &sc->rxq.desc[sc->rxq.cur]; 1277 data = &sc->rxq.data[sc->rxq.cur]; 1278 1279 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1280 sc->rxq.cur * RT2560_RX_DESC_SIZE, RT2560_RX_DESC_SIZE, 1281 BUS_DMASYNC_POSTREAD); 1282 1283 if (letoh32(desc->flags) & 1284 (RT2560_RX_BUSY | RT2560_RX_CIPHER_BUSY)) 1285 break; 1286 1287 data->drop = 0; 1288 1289 if (letoh32(desc->flags) & 1290 (RT2560_RX_PHY_ERROR | RT2560_RX_CRC_ERROR)) { 1291 /* 1292 * This should not happen since we did not request 1293 * to receive those frames when we filled RXCSR0. 1294 */ 1295 DPRINTFN(5, ("PHY or CRC error flags 0x%08x\n", 1296 letoh32(desc->flags))); 1297 data->drop = 1; 1298 } 1299 1300 if (((letoh32(desc->flags) >> 16) & 0xfff) > MCLBYTES) { 1301 DPRINTFN(5, ("bad length\n")); 1302 data->drop = 1; 1303 } 1304 1305 /* mark the frame for decryption */ 1306 desc->flags |= htole32(RT2560_RX_CIPHER_BUSY); 1307 1308 bus_dmamap_sync(sc->sc_dmat, sc->rxq.map, 1309 sc->rxq.cur * RT2560_RX_DESC_SIZE, RT2560_RX_DESC_SIZE, 1310 BUS_DMASYNC_PREWRITE); 1311 1312 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1313 1314 sc->rxq.cur = (sc->rxq.cur + 1) % RT2560_RX_RING_COUNT; 1315 } 1316 1317 /* kick decrypt */ 1318 RAL_WRITE(sc, RT2560_SECCSR0, RT2560_KICK_DECRYPT); 1319} 1320 1321/* 1322 * This function is called periodically in IBSS mode when a new beacon must be 1323 * sent out. 1324 */ 1325void 1326rt2560_beacon_expire(struct rt2560_softc *sc) 1327{ 1328 struct ieee80211com *ic = &sc->sc_ic; 1329 struct rt2560_tx_data *data; 1330 1331 if (ic->ic_opmode != IEEE80211_M_IBSS && 1332 ic->ic_opmode != IEEE80211_M_HOSTAP) 1333 return; 1334 1335 data = &sc->bcnq.data[sc->bcnq.next]; 1336 1337#if NBPFILTER > 0 1338 if (ic->ic_rawbpf != NULL) 1339 bpf_mtap(ic->ic_rawbpf, data->m, BPF_DIRECTION_OUT); 1340#endif 1341 1342 DPRINTFN(15, ("beacon expired\n")); 1343} 1344 1345void 1346rt2560_wakeup_expire(struct rt2560_softc *sc) 1347{ 1348 DPRINTFN(15, ("wakeup expired\n")); 1349} 1350 1351int 1352rt2560_intr(void *arg) 1353{ 1354 struct rt2560_softc *sc = arg; 1355 struct ifnet *ifp = &sc->sc_ic.ic_if; 1356 uint32_t r; 1357 1358 /* disable interrupts */ 1359 RAL_WRITE(sc, RT2560_CSR8, 0xffffffff); 1360 1361 /* don't re-enable interrupts if we're shutting down */ 1362 if (!(ifp->if_flags & IFF_RUNNING)) 1363 return 0; 1364 1365 r = RAL_READ(sc, RT2560_CSR7); 1366 RAL_WRITE(sc, RT2560_CSR7, r); 1367 1368 if (r & RT2560_BEACON_EXPIRE) 1369 rt2560_beacon_expire(sc); 1370 1371 if (r & RT2560_WAKEUP_EXPIRE) 1372 rt2560_wakeup_expire(sc); 1373 1374 if (r & RT2560_ENCRYPTION_DONE) 1375 rt2560_encryption_intr(sc); 1376 1377 if (r & RT2560_TX_DONE) 1378 rt2560_tx_intr(sc); 1379 1380 if (r & RT2560_PRIO_DONE) 1381 rt2560_prio_intr(sc); 1382 1383 if (r & RT2560_DECRYPTION_DONE) 1384 rt2560_decryption_intr(sc); 1385 1386 if (r & RT2560_RX_DONE) 1387 rt2560_rx_intr(sc); 1388 1389 /* re-enable interrupts */ 1390 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 1391 1392 return 1; 1393} 1394 1395/* quickly determine if a given rate is CCK or OFDM */ 1396#define RAL_RATE_IS_OFDM(rate) ((rate) >= 12 && (rate) != 22) 1397 1398#define RAL_ACK_SIZE 14 /* 10 + 4(FCS) */ 1399#define RAL_CTS_SIZE 14 /* 10 + 4(FCS) */ 1400 1401#define RAL_SIFS 10 /* us */ 1402 1403#define RT2560_RXTX_TURNAROUND 10 /* us */ 1404 1405/* 1406 * This function is only used by the Rx radiotap code. It returns the rate at 1407 * which a given frame was received. 1408 */ 1409#if NBPFILTER > 0 1410uint8_t 1411rt2560_rxrate(struct rt2560_rx_desc *desc) 1412{ 1413 if (letoh32(desc->flags) & RT2560_RX_OFDM) { 1414 /* reverse function of rt2560_plcp_signal */ 1415 switch (desc->rate) { 1416 case 0xb: return 12; 1417 case 0xf: return 18; 1418 case 0xa: return 24; 1419 case 0xe: return 36; 1420 case 0x9: return 48; 1421 case 0xd: return 72; 1422 case 0x8: return 96; 1423 case 0xc: return 108; 1424 } 1425 } else { 1426 if (desc->rate == 10) 1427 return 2; 1428 if (desc->rate == 20) 1429 return 4; 1430 if (desc->rate == 55) 1431 return 11; 1432 if (desc->rate == 110) 1433 return 22; 1434 } 1435 return 2; /* should not get there */ 1436} 1437#endif 1438 1439/* 1440 * Return the expected ack rate for a frame transmitted at rate `rate'. 1441 * XXX: this should depend on the destination node basic rate set. 1442 */ 1443int 1444rt2560_ack_rate(struct ieee80211com *ic, int rate) 1445{ 1446 switch (rate) { 1447 /* CCK rates */ 1448 case 2: 1449 return 2; 1450 case 4: 1451 case 11: 1452 case 22: 1453 return (ic->ic_curmode == IEEE80211_MODE_11B) ? 4 : rate; 1454 1455 /* OFDM rates */ 1456 case 12: 1457 case 18: 1458 return 12; 1459 case 24: 1460 case 36: 1461 return 24; 1462 case 48: 1463 case 72: 1464 case 96: 1465 case 108: 1466 return 48; 1467 } 1468 1469 /* default to 1Mbps */ 1470 return 2; 1471} 1472 1473/* 1474 * Compute the duration (in us) needed to transmit `len' bytes at rate `rate'. 1475 * The function automatically determines the operating mode depending on the 1476 * given rate. `flags' indicates whether short preamble is in use or not. 1477 */ 1478uint16_t 1479rt2560_txtime(int len, int rate, uint32_t flags) 1480{ 1481 uint16_t txtime; 1482 1483 if (RAL_RATE_IS_OFDM(rate)) { 1484 /* IEEE Std 802.11a-1999, pp. 37 */ 1485 txtime = (8 + 4 * len + 3 + rate - 1) / rate; 1486 txtime = 16 + 4 + 4 * txtime + 6; 1487 } else { 1488 /* IEEE Std 802.11b-1999, pp. 28 */ 1489 txtime = (16 * len + rate - 1) / rate; 1490 if (rate != 2 && (flags & IEEE80211_F_SHPREAMBLE)) 1491 txtime += 72 + 24; 1492 else 1493 txtime += 144 + 48; 1494 } 1495 return txtime; 1496} 1497 1498uint8_t 1499rt2560_plcp_signal(int rate) 1500{ 1501 switch (rate) { 1502 /* CCK rates (returned values are device-dependent) */ 1503 case 2: return 0x0; 1504 case 4: return 0x1; 1505 case 11: return 0x2; 1506 case 22: return 0x3; 1507 1508 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 1509 case 12: return 0xb; 1510 case 18: return 0xf; 1511 case 24: return 0xa; 1512 case 36: return 0xe; 1513 case 48: return 0x9; 1514 case 72: return 0xd; 1515 case 96: return 0x8; 1516 case 108: return 0xc; 1517 1518 /* unsupported rates (should not get there) */ 1519 default: return 0xff; 1520 } 1521} 1522 1523void 1524rt2560_setup_tx_desc(struct rt2560_softc *sc, struct rt2560_tx_desc *desc, 1525 uint32_t flags, int len, int rate, int encrypt, bus_addr_t physaddr) 1526{ 1527 struct ieee80211com *ic = &sc->sc_ic; 1528 uint16_t plcp_length; 1529 int remainder; 1530 1531 desc->flags = htole32(flags); 1532 desc->flags |= htole32(len << 16); 1533 desc->flags |= encrypt ? htole32(RT2560_TX_CIPHER_BUSY) : 1534 htole32(RT2560_TX_BUSY | RT2560_TX_VALID); 1535 1536 desc->physaddr = htole32(physaddr); 1537 desc->wme = htole16( 1538 RT2560_AIFSN(2) | 1539 RT2560_LOGCWMIN(3) | 1540 RT2560_LOGCWMAX(8)); 1541 1542 /* setup PLCP fields */ 1543 desc->plcp_signal = rt2560_plcp_signal(rate); 1544 desc->plcp_service = 4; 1545 1546 len += IEEE80211_CRC_LEN; 1547 if (RAL_RATE_IS_OFDM(rate)) { 1548 desc->flags |= htole32(RT2560_TX_OFDM); 1549 1550 plcp_length = len & 0xfff; 1551 desc->plcp_length_hi = plcp_length >> 6; 1552 desc->plcp_length_lo = plcp_length & 0x3f; 1553 } else { 1554 plcp_length = (16 * len + rate - 1) / rate; 1555 if (rate == 22) { 1556 remainder = (16 * len) % 22; 1557 if (remainder != 0 && remainder < 7) 1558 desc->plcp_service |= RT2560_PLCP_LENGEXT; 1559 } 1560 desc->plcp_length_hi = plcp_length >> 8; 1561 desc->plcp_length_lo = plcp_length & 0xff; 1562 1563 if (rate != 2 && (ic->ic_flags & IEEE80211_F_SHPREAMBLE)) 1564 desc->plcp_signal |= 0x08; 1565 } 1566} 1567 1568int 1569rt2560_tx_bcn(struct rt2560_softc *sc, struct mbuf *m0, 1570 struct ieee80211_node *ni) 1571{ 1572 struct rt2560_tx_desc *desc; 1573 struct rt2560_tx_data *data; 1574 int rate, error; 1575 1576 desc = &sc->bcnq.desc[sc->bcnq.cur]; 1577 data = &sc->bcnq.data[sc->bcnq.cur]; 1578 1579 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1580 1581 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1582 BUS_DMA_NOWAIT); 1583 if (error != 0) { 1584 printf("%s: could not map mbuf (error %d)\n", 1585 sc->sc_dev.dv_xname, error); 1586 m_freem(m0); 1587 return error; 1588 } 1589 1590 data->m = m0; 1591 data->ni = ni; 1592 1593 rt2560_setup_tx_desc(sc, desc, RT2560_TX_IFS_NEWBACKOFF | 1594 RT2560_TX_TIMESTAMP, m0->m_pkthdr.len, rate, 0, 1595 data->map->dm_segs->ds_addr); 1596 1597 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1598 BUS_DMASYNC_PREWRITE); 1599 bus_dmamap_sync(sc->sc_dmat, sc->bcnq.map, 1600 sc->bcnq.cur * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1601 BUS_DMASYNC_PREWRITE); 1602 1603 return 0; 1604} 1605 1606int 1607rt2560_tx_mgt(struct rt2560_softc *sc, struct mbuf *m0, 1608 struct ieee80211_node *ni) 1609{ 1610 struct ieee80211com *ic = &sc->sc_ic; 1611 struct ifnet *ifp = &ic->ic_if; 1612 struct rt2560_tx_desc *desc; 1613 struct rt2560_tx_data *data; 1614 struct ieee80211_frame *wh; 1615 uint16_t dur; 1616 uint32_t flags = 0; 1617 int rate, error; 1618 1619 desc = &sc->prioq.desc[sc->prioq.cur]; 1620 data = &sc->prioq.data[sc->prioq.cur]; 1621 1622 rate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1623 1624 wh = mtod(m0, struct ieee80211_frame *); 1625 1626 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1627 m0 = ieee80211_wep_crypt(ifp, m0, 1); 1628 if (m0 == NULL) 1629 return ENOBUFS; 1630 1631 /* packet header may have moved, reset our local pointer */ 1632 wh = mtod(m0, struct ieee80211_frame *); 1633 } 1634 1635 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1636 BUS_DMA_NOWAIT); 1637 if (error != 0) { 1638 printf("%s: could not map mbuf (error %d)\n", 1639 sc->sc_dev.dv_xname, error); 1640 m_freem(m0); 1641 return error; 1642 } 1643 1644#if NBPFILTER > 0 1645 if (sc->sc_drvbpf != NULL) { 1646 struct mbuf mb; 1647 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1648 1649 tap->wt_flags = 0; 1650 tap->wt_rate = rate; 1651 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1652 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1653 tap->wt_antenna = sc->tx_ant; 1654 1655 M_DUP_PKTHDR(&mb, m0); 1656 mb.m_data = (caddr_t)tap; 1657 mb.m_len = sc->sc_txtap_len; 1658 mb.m_next = m0; 1659 mb.m_pkthdr.len += mb.m_len; 1660 bpf_mtap(sc->sc_drvbpf, &mb, BPF_DIRECTION_OUT); 1661 } 1662#endif 1663 1664 data->m = m0; 1665 data->ni = ni; 1666 1667 wh = mtod(m0, struct ieee80211_frame *); 1668 1669 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1670 flags |= RT2560_TX_ACK; 1671 1672 dur = rt2560_txtime(RAL_ACK_SIZE, rate, ic->ic_flags) + 1673 RAL_SIFS; 1674 *(uint16_t *)wh->i_dur = htole16(dur); 1675 1676 /* tell hardware to set timestamp for probe responses */ 1677 if ((wh->i_fc[0] & 1678 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_MASK)) == 1679 (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_RESP)) 1680 flags |= RT2560_TX_TIMESTAMP; 1681 } 1682 1683 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 0, 1684 data->map->dm_segs->ds_addr); 1685 1686 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1687 BUS_DMASYNC_PREWRITE); 1688 bus_dmamap_sync(sc->sc_dmat, sc->prioq.map, 1689 sc->prioq.cur * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1690 BUS_DMASYNC_PREWRITE); 1691 1692 DPRINTFN(10, ("sending mgt frame len=%u idx=%u rate=%u\n", 1693 m0->m_pkthdr.len, sc->prioq.cur, rate)); 1694 1695 /* kick prio */ 1696 sc->prioq.queued++; 1697 sc->prioq.cur = (sc->prioq.cur + 1) % RT2560_PRIO_RING_COUNT; 1698 RAL_WRITE(sc, RT2560_TXCSR0, RT2560_KICK_PRIO); 1699 1700 return 0; 1701} 1702 1703/* 1704 * Build a RTS control frame. 1705 */ 1706struct mbuf * 1707rt2560_get_rts(struct rt2560_softc *sc, struct ieee80211_frame *wh, 1708 uint16_t dur) 1709{ 1710 struct ieee80211_frame_rts *rts; 1711 struct mbuf *m; 1712 1713 MGETHDR(m, M_DONTWAIT, MT_DATA); 1714 if (m == NULL) { 1715 sc->sc_ic.ic_stats.is_tx_nombuf++; 1716 printf("%s: could not allocate RTS frame\n", 1717 sc->sc_dev.dv_xname); 1718 return NULL; 1719 } 1720 1721 rts = mtod(m, struct ieee80211_frame_rts *); 1722 1723 rts->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_CTL | 1724 IEEE80211_FC0_SUBTYPE_RTS; 1725 rts->i_fc[1] = IEEE80211_FC1_DIR_NODS; 1726 *(uint16_t *)rts->i_dur = htole16(dur); 1727 IEEE80211_ADDR_COPY(rts->i_ra, wh->i_addr1); 1728 IEEE80211_ADDR_COPY(rts->i_ta, wh->i_addr2); 1729 1730 m->m_pkthdr.len = m->m_len = sizeof (struct ieee80211_frame_rts); 1731 1732 return m; 1733} 1734 1735int 1736rt2560_tx_data(struct rt2560_softc *sc, struct mbuf *m0, 1737 struct ieee80211_node *ni) 1738{ 1739 struct ieee80211com *ic = &sc->sc_ic; 1740 struct ifnet *ifp = &ic->ic_if; 1741 struct rt2560_tx_desc *desc; 1742 struct rt2560_tx_data *data; 1743 struct rt2560_node *rn; 1744 struct ieee80211_rateset *rs; 1745 struct ieee80211_frame *wh; 1746 struct mbuf *mnew; 1747 uint16_t dur; 1748 uint32_t flags = 0; 1749 int rate, useprot, error; 1750 1751 wh = mtod(m0, struct ieee80211_frame *); 1752 1753 /* XXX this should be reworked! */ 1754 if (ic->ic_fixed_rate != -1) { 1755 if (ic->ic_curmode != IEEE80211_MODE_AUTO) 1756 rs = &ic->ic_sup_rates[ic->ic_curmode]; 1757 else 1758 rs = &ic->ic_sup_rates[IEEE80211_MODE_11G]; 1759 1760 rate = rs->rs_rates[ic->ic_fixed_rate]; 1761 } else { 1762 rs = &ni->ni_rates; 1763 rn = (struct rt2560_node *)ni; 1764 ni->ni_txrate = ieee80211_rssadapt_choose(&rn->rssadapt, rs, 1765 wh, m0->m_pkthdr.len, -1, NULL, 0); 1766 rate = rs->rs_rates[ni->ni_txrate]; 1767 } 1768 rate &= IEEE80211_RATE_VAL; 1769 if (rate == 0) 1770 rate = 2; /* fallback to 1Mbps; should not happen */ 1771 1772 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1773 m0 = ieee80211_wep_crypt(ifp, m0, 1); 1774 if (m0 == NULL) 1775 return ENOBUFS; 1776 1777 /* packet header may have moved, reset our local pointer */ 1778 wh = mtod(m0, struct ieee80211_frame *); 1779 } 1780 1781 /*- 1782 * IEEE Std 802.11-1999, pp 82: "A STA shall use an RTS/CTS exchange 1783 * for directed frames only when the length of the MPDU is greater 1784 * than the length threshold indicated by" ic_rtsthreshold. 1785 * 1786 * IEEE Std 802.11-2003g, pp 13: "ERP STAs shall use protection 1787 * mechanism (such as RTS/CTS or CTS-to-self) for ERP-OFDM MPDUs of 1788 * type Data or an MMPDU". 1789 */ 1790 useprot = !IEEE80211_IS_MULTICAST(wh->i_addr1) && 1791 (m0->m_pkthdr.len + IEEE80211_CRC_LEN > ic->ic_rtsthreshold || 1792 ((ic->ic_flags & IEEE80211_F_USEPROT) && RAL_RATE_IS_OFDM(rate))); 1793 if (useprot) { 1794 struct mbuf *m; 1795 uint16_t dur; 1796 int rtsrate, ackrate; 1797 1798 rtsrate = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? 12 : 2; 1799 ackrate = rt2560_ack_rate(ic, rate); 1800 1801 dur = rt2560_txtime(m0->m_pkthdr.len + 4, rate, ic->ic_flags) + 1802 rt2560_txtime(RAL_CTS_SIZE, rtsrate, ic->ic_flags) + 1803 rt2560_txtime(RAL_ACK_SIZE, ackrate, ic->ic_flags) + 1804 3 * RAL_SIFS; 1805 1806 m = rt2560_get_rts(sc, wh, dur); 1807 if (m == NULL) { 1808 printf("%s: could not allocate RTS frame\n", 1809 sc->sc_dev.dv_xname); 1810 m_freem(m0); 1811 return ENOBUFS; 1812 } 1813 1814 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1815 data = &sc->txq.data[sc->txq.cur_encrypt]; 1816 1817 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m, 1818 BUS_DMA_NOWAIT); 1819 if (error != 0) { 1820 printf("%s: could not map mbuf (error %d)\n", 1821 sc->sc_dev.dv_xname, error); 1822 m_freem(m); 1823 m_freem(m0); 1824 return error; 1825 } 1826 1827 /* avoid multiple free() of the same node for each fragment */ 1828 ieee80211_ref_node(ni); 1829 1830 data->m = m; 1831 data->ni = ni; 1832 1833 /* RTS frames are not taken into account for rssadapt */ 1834 data->id.id_node = NULL; 1835 1836 rt2560_setup_tx_desc(sc, desc, RT2560_TX_ACK | 1837 RT2560_TX_MORE_FRAG, m->m_pkthdr.len, rtsrate, 1, 1838 data->map->dm_segs->ds_addr); 1839 1840 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1841 data->map->dm_mapsize, BUS_DMASYNC_PREWRITE); 1842 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1843 sc->txq.cur_encrypt * RT2560_TX_DESC_SIZE, 1844 RT2560_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1845 1846 sc->txq.queued++; 1847 sc->txq.cur_encrypt = 1848 (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1849 1850 /* 1851 * IEEE Std 802.11-1999: "when an RTS/CTS exchange is used, the 1852 * asynchronous data frame shall be transmitted after the CTS 1853 * frame and a SIFS period". 1854 */ 1855 flags |= RT2560_TX_LONG_RETRY | RT2560_TX_IFS_SIFS; 1856 } 1857 1858 data = &sc->txq.data[sc->txq.cur_encrypt]; 1859 desc = &sc->txq.desc[sc->txq.cur_encrypt]; 1860 1861 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1862 BUS_DMA_NOWAIT); 1863 if (error != 0 && error != EFBIG) { 1864 printf("%s: could not map mbuf (error %d)\n", 1865 sc->sc_dev.dv_xname, error); 1866 m_freem(m0); 1867 return error; 1868 } 1869 if (error != 0) { 1870 /* too many fragments, linearize */ 1871 1872 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1873 if (mnew == NULL) { 1874 m_freem(m0); 1875 return ENOMEM; 1876 } 1877 1878 M_DUP_PKTHDR(mnew, m0); 1879 if (m0->m_pkthdr.len > MHLEN) { 1880 MCLGET(mnew, M_DONTWAIT); 1881 if (!(mnew->m_flags & M_EXT)) { 1882 m_freem(m0); 1883 m_freem(mnew); 1884 return ENOMEM; 1885 } 1886 } 1887 1888 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, caddr_t)); 1889 m_freem(m0); 1890 mnew->m_len = mnew->m_pkthdr.len; 1891 m0 = mnew; 1892 1893 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1894 BUS_DMA_NOWAIT); 1895 if (error != 0) { 1896 printf("%s: could not map mbuf (error %d)\n", 1897 sc->sc_dev.dv_xname, error); 1898 m_freem(m0); 1899 return error; 1900 } 1901 1902 /* packet header have moved, reset our local pointer */ 1903 wh = mtod(m0, struct ieee80211_frame *); 1904 } 1905 1906#if NBPFILTER > 0 1907 if (sc->sc_drvbpf != NULL) { 1908 struct mbuf mb; 1909 struct rt2560_tx_radiotap_header *tap = &sc->sc_txtap; 1910 1911 tap->wt_flags = 0; 1912 tap->wt_rate = rate; 1913 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1914 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1915 tap->wt_antenna = sc->tx_ant; 1916 1917 M_DUP_PKTHDR(&mb, m0); 1918 mb.m_data = (caddr_t)tap; 1919 mb.m_len = sc->sc_txtap_len; 1920 mb.m_next = m0; 1921 mb.m_pkthdr.len += mb.m_len; 1922 bpf_mtap(sc->sc_drvbpf, &mb, BPF_DIRECTION_OUT); 1923 } 1924#endif 1925 1926 data->m = m0; 1927 data->ni = ni; 1928 1929 /* remember link conditions for rate adaptation algorithm */ 1930 if (ic->ic_fixed_rate == -1) { 1931 data->id.id_len = m0->m_pkthdr.len; 1932 data->id.id_rateidx = ni->ni_txrate; 1933 data->id.id_node = ni; 1934 data->id.id_rssi = ni->ni_rssi; 1935 } else 1936 data->id.id_node = NULL; 1937 1938 if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) { 1939 flags |= RT2560_TX_ACK; 1940 1941 dur = rt2560_txtime(RAL_ACK_SIZE, rt2560_ack_rate(ic, rate), 1942 ic->ic_flags) + RAL_SIFS; 1943 *(uint16_t *)wh->i_dur = htole16(dur); 1944 } 1945 1946 rt2560_setup_tx_desc(sc, desc, flags, m0->m_pkthdr.len, rate, 1, 1947 data->map->dm_segs->ds_addr); 1948 1949 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1950 BUS_DMASYNC_PREWRITE); 1951 bus_dmamap_sync(sc->sc_dmat, sc->txq.map, 1952 sc->txq.cur_encrypt * RT2560_TX_DESC_SIZE, RT2560_TX_DESC_SIZE, 1953 BUS_DMASYNC_PREWRITE); 1954 1955 DPRINTFN(10, ("sending data frame len=%u idx=%u rate=%u\n", 1956 m0->m_pkthdr.len, sc->txq.cur_encrypt, rate)); 1957 1958 /* kick encrypt */ 1959 sc->txq.queued++; 1960 sc->txq.cur_encrypt = (sc->txq.cur_encrypt + 1) % RT2560_TX_RING_COUNT; 1961 RAL_WRITE(sc, RT2560_SECCSR1, RT2560_KICK_ENCRYPT); 1962 1963 return 0; 1964} 1965 1966void 1967rt2560_start(struct ifnet *ifp) 1968{ 1969 struct rt2560_softc *sc = ifp->if_softc; 1970 struct ieee80211com *ic = &sc->sc_ic; 1971 struct mbuf *m0; 1972 struct ieee80211_node *ni; 1973 1974 /* 1975 * net80211 may still try to send management frames even if the 1976 * IFF_RUNNING flag is not set... 1977 */ 1978 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1979 return; 1980 1981 for (;;) { 1982 IF_POLL(&ic->ic_mgtq, m0); 1983 if (m0 != NULL) { 1984 if (sc->prioq.queued >= RT2560_PRIO_RING_COUNT) { 1985 ifp->if_flags |= IFF_OACTIVE; 1986 break; 1987 } 1988 IF_DEQUEUE(&ic->ic_mgtq, m0); 1989 1990 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 1991 m0->m_pkthdr.rcvif = NULL; 1992#if NBPFILTER > 0 1993 if (ic->ic_rawbpf != NULL) 1994 bpf_mtap(ic->ic_rawbpf, m0, BPF_DIRECTION_OUT); 1995#endif 1996 if (rt2560_tx_mgt(sc, m0, ni) != 0) 1997 break; 1998 1999 } else { 2000 if (ic->ic_state != IEEE80211_S_RUN) 2001 break; 2002 IFQ_DEQUEUE(&ifp->if_snd, m0); 2003 if (m0 == NULL) 2004 break; 2005 if (sc->txq.queued >= RT2560_TX_RING_COUNT - 1) { 2006 IF_PREPEND(&ifp->if_snd, m0); 2007 ifp->if_flags |= IFF_OACTIVE; 2008 break; 2009 } 2010#if NBPFILTER > 0 2011 if (ifp->if_bpf != NULL) 2012 bpf_mtap(ifp->if_bpf, m0, BPF_DIRECTION_OUT); 2013#endif 2014 m0 = ieee80211_encap(ifp, m0, &ni); 2015 if (m0 == NULL) 2016 continue; 2017#if NBPFILTER > 0 2018 if (ic->ic_rawbpf != NULL) 2019 bpf_mtap(ic->ic_rawbpf, m0, BPF_DIRECTION_OUT); 2020#endif 2021 if (rt2560_tx_data(sc, m0, ni) != 0) { 2022 if (ni != NULL) 2023 ieee80211_release_node(ic, ni); 2024 ifp->if_oerrors++; 2025 break; 2026 } 2027 } 2028 2029 sc->sc_tx_timer = 5; 2030 ifp->if_timer = 1; 2031 } 2032} 2033 2034void 2035rt2560_watchdog(struct ifnet *ifp) 2036{ 2037 struct rt2560_softc *sc = ifp->if_softc; 2038 2039 ifp->if_timer = 0; 2040 2041 if (sc->sc_tx_timer > 0) { 2042 if (--sc->sc_tx_timer == 0) { 2043 printf("%s: device timeout\n", sc->sc_dev.dv_xname); 2044 rt2560_init(ifp); 2045 ifp->if_oerrors++; 2046 return; 2047 } 2048 ifp->if_timer = 1; 2049 } 2050 2051 ieee80211_watchdog(ifp); 2052} 2053 2054int 2055rt2560_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2056{ 2057 struct rt2560_softc *sc = ifp->if_softc; 2058 struct ieee80211com *ic = &sc->sc_ic; 2059 struct ifaddr *ifa; 2060 struct ifreq *ifr; 2061 int s, error = 0; 2062 2063 s = splnet(); 2064 2065 switch (cmd) { 2066 case SIOCSIFADDR: 2067 ifa = (struct ifaddr *)data; 2068 ifp->if_flags |= IFF_UP; 2069#ifdef INET 2070 if (ifa->ifa_addr->sa_family == AF_INET) 2071 arp_ifinit(&ic->ic_ac, ifa); 2072#endif 2073 /* FALLTHROUGH */ 2074 case SIOCSIFFLAGS: 2075 if (ifp->if_flags & IFF_UP) { 2076 if (ifp->if_flags & IFF_RUNNING) 2077 rt2560_update_promisc(sc); 2078 else 2079 rt2560_init(ifp); 2080 } else { 2081 if (ifp->if_flags & IFF_RUNNING) 2082 rt2560_stop(ifp, 1); 2083 } 2084 break; 2085 2086 case SIOCADDMULTI: 2087 case SIOCDELMULTI: 2088 ifr = (struct ifreq *)data; 2089 error = (cmd == SIOCADDMULTI) ? 2090 ether_addmulti(ifr, &ic->ic_ac) : 2091 ether_delmulti(ifr, &ic->ic_ac); 2092 2093 if (error == ENETRESET) 2094 error = 0; 2095 break; 2096 2097 case SIOCS80211CHANNEL: 2098 /* 2099 * This allows for fast channel switching in monitor mode 2100 * (used by kismet). In IBSS mode, we must explicitly reset 2101 * the interface to generate a new beacon frame. 2102 */ 2103 error = ieee80211_ioctl(ifp, cmd, data); 2104 if (error == ENETRESET && 2105 ic->ic_opmode == IEEE80211_M_MONITOR) { 2106 rt2560_set_chan(sc, ic->ic_ibss_chan); 2107 error = 0; 2108 } 2109 break; 2110 2111 default: 2112 error = ieee80211_ioctl(ifp, cmd, data); 2113 } 2114 2115 if (error == ENETRESET) { 2116 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 2117 (IFF_UP | IFF_RUNNING)) 2118 rt2560_init(ifp); 2119 error = 0; 2120 } 2121 2122 splx(s); 2123 2124 return error; 2125} 2126 2127void 2128rt2560_bbp_write(struct rt2560_softc *sc, uint8_t reg, uint8_t val) 2129{ 2130 uint32_t tmp; 2131 int ntries; 2132 2133 for (ntries = 0; ntries < 100; ntries++) { 2134 if (!(RAL_READ(sc, RT2560_BBPCSR) & RT2560_BBP_BUSY)) 2135 break; 2136 DELAY(1); 2137 } 2138 if (ntries == 100) { 2139 printf("%s: could not write to BBP\n", sc->sc_dev.dv_xname); 2140 return; 2141 } 2142 2143 tmp = RT2560_BBP_WRITE | RT2560_BBP_BUSY | reg << 8 | val; 2144 RAL_WRITE(sc, RT2560_BBPCSR, tmp); 2145 2146 DPRINTFN(15, ("BBP R%u <- 0x%02x\n", reg, val)); 2147} 2148 2149uint8_t 2150rt2560_bbp_read(struct rt2560_softc *sc, uint8_t reg) 2151{ 2152 uint32_t val; 2153 int ntries; 2154 2155 val = RT2560_BBP_BUSY | reg << 8; 2156 RAL_WRITE(sc, RT2560_BBPCSR, val); 2157 2158 for (ntries = 0; ntries < 100; ntries++) { 2159 val = RAL_READ(sc, RT2560_BBPCSR); 2160 if (!(val & RT2560_BBP_BUSY)) 2161 return val & 0xff; 2162 DELAY(1); 2163 } 2164 2165 printf("%s: could not read from BBP\n", sc->sc_dev.dv_xname); 2166 return 0; 2167} 2168 2169void 2170rt2560_rf_write(struct rt2560_softc *sc, uint8_t reg, uint32_t val) 2171{ 2172 uint32_t tmp; 2173 int ntries; 2174 2175 for (ntries = 0; ntries < 100; ntries++) { 2176 if (!(RAL_READ(sc, RT2560_RFCSR) & RT2560_RF_BUSY)) 2177 break; 2178 DELAY(1); 2179 } 2180 if (ntries == 100) { 2181 printf("%s: could not write to RF\n", sc->sc_dev.dv_xname); 2182 return; 2183 } 2184 2185 tmp = RT2560_RF_BUSY | RT2560_RF_20BIT | (val & 0xfffff) << 2 | 2186 (reg & 0x3); 2187 RAL_WRITE(sc, RT2560_RFCSR, tmp); 2188 2189 /* remember last written value in sc */ 2190 sc->rf_regs[reg] = val; 2191 2192 DPRINTFN(15, ("RF R[%u] <- 0x%05x\n", reg & 0x3, val & 0xfffff)); 2193} 2194 2195void 2196rt2560_set_chan(struct rt2560_softc *sc, struct ieee80211_channel *c) 2197{ 2198 struct ieee80211com *ic = &sc->sc_ic; 2199 uint8_t power, tmp; 2200 u_int i, chan; 2201 2202 chan = ieee80211_chan2ieee(ic, c); 2203 if (chan == 0 || chan == IEEE80211_CHAN_ANY) 2204 return; 2205 2206 if (IEEE80211_IS_CHAN_2GHZ(c)) 2207 power = min(sc->txpow[chan - 1], 31); 2208 else 2209 power = 31; 2210 2211 DPRINTFN(2, ("setting channel to %u, txpower to %u\n", chan, power)); 2212 2213 switch (sc->rf_rev) { 2214 case RT2560_RF_2522: 2215 rt2560_rf_write(sc, RT2560_RF1, 0x00814); 2216 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2522_r2[chan - 1]); 2217 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x00040); 2218 break; 2219 2220 case RT2560_RF_2523: 2221 rt2560_rf_write(sc, RT2560_RF1, 0x08804); 2222 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2523_r2[chan - 1]); 2223 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x38044); 2224 rt2560_rf_write(sc, RT2560_RF4, 2225 (chan == 14) ? 0x00280 : 0x00286); 2226 break; 2227 2228 case RT2560_RF_2524: 2229 rt2560_rf_write(sc, RT2560_RF1, 0x0c808); 2230 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2524_r2[chan - 1]); 2231 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x00040); 2232 rt2560_rf_write(sc, RT2560_RF4, 2233 (chan == 14) ? 0x00280 : 0x00286); 2234 break; 2235 2236 case RT2560_RF_2525: 2237 rt2560_rf_write(sc, RT2560_RF1, 0x08808); 2238 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2525_hi_r2[chan - 1]); 2239 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2240 rt2560_rf_write(sc, RT2560_RF4, 2241 (chan == 14) ? 0x00280 : 0x00286); 2242 2243 rt2560_rf_write(sc, RT2560_RF1, 0x08808); 2244 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2525_r2[chan - 1]); 2245 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2246 rt2560_rf_write(sc, RT2560_RF4, 2247 (chan == 14) ? 0x00280 : 0x00286); 2248 break; 2249 2250 case RT2560_RF_2525E: 2251 rt2560_rf_write(sc, RT2560_RF1, 0x08808); 2252 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2525e_r2[chan - 1]); 2253 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2254 rt2560_rf_write(sc, RT2560_RF4, 2255 (chan == 14) ? 0x00286 : 0x00282); 2256 break; 2257 2258 case RT2560_RF_2526: 2259 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2526_hi_r2[chan - 1]); 2260 rt2560_rf_write(sc, RT2560_RF4, 2261 (chan & 1) ? 0x00386 : 0x00381); 2262 rt2560_rf_write(sc, RT2560_RF1, 0x08804); 2263 2264 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf2526_r2[chan - 1]); 2265 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x18044); 2266 rt2560_rf_write(sc, RT2560_RF4, 2267 (chan & 1) ? 0x00386 : 0x00381); 2268 break; 2269 2270 /* dual-band RF */ 2271 case RT2560_RF_5222: 2272 for (i = 0; rt2560_rf5222[i].chan != chan; i++); 2273 2274 rt2560_rf_write(sc, RT2560_RF1, rt2560_rf5222[i].r1); 2275 rt2560_rf_write(sc, RT2560_RF2, rt2560_rf5222[i].r2); 2276 rt2560_rf_write(sc, RT2560_RF3, power << 7 | 0x00040); 2277 rt2560_rf_write(sc, RT2560_RF4, rt2560_rf5222[i].r4); 2278 break; 2279 } 2280 2281 if (ic->ic_opmode != IEEE80211_M_MONITOR && 2282 ic->ic_state != IEEE80211_S_SCAN) { 2283 /* set Japan filter bit for channel 14 */ 2284 tmp = rt2560_bbp_read(sc, 70); 2285 2286 tmp &= ~RT2560_JAPAN_FILTER; 2287 if (chan == 14) 2288 tmp |= RT2560_JAPAN_FILTER; 2289 2290 rt2560_bbp_write(sc, 70, tmp); 2291 2292 DELAY(1000); /* RF needs a 1ms delay here */ 2293 rt2560_disable_rf_tune(sc); 2294 2295 /* clear CRC errors */ 2296 RAL_READ(sc, RT2560_CNT0); 2297 } 2298} 2299 2300/* 2301 * Disable RF auto-tuning. 2302 */ 2303void 2304rt2560_disable_rf_tune(struct rt2560_softc *sc) 2305{ 2306 uint32_t tmp; 2307 2308 if (sc->rf_rev != RT2560_RF_2523) { 2309 tmp = sc->rf_regs[RT2560_RF1] & ~RT2560_RF1_AUTOTUNE; 2310 rt2560_rf_write(sc, RT2560_RF1, tmp); 2311 } 2312 2313 tmp = sc->rf_regs[RT2560_RF3] & ~RT2560_RF3_AUTOTUNE; 2314 rt2560_rf_write(sc, RT2560_RF3, tmp); 2315 2316 DPRINTFN(2, ("disabling RF autotune\n")); 2317} 2318 2319/* 2320 * Refer to IEEE Std 802.11-1999 pp. 123 for more information on TSF 2321 * synchronization. 2322 */ 2323void 2324rt2560_enable_tsf_sync(struct rt2560_softc *sc) 2325{ 2326 struct ieee80211com *ic = &sc->sc_ic; 2327 uint16_t logcwmin, preload; 2328 uint32_t tmp; 2329 2330 /* first, disable TSF synchronization */ 2331 RAL_WRITE(sc, RT2560_CSR14, 0); 2332 2333 tmp = 16 * ic->ic_bss->ni_intval; 2334 RAL_WRITE(sc, RT2560_CSR12, tmp); 2335 2336 RAL_WRITE(sc, RT2560_CSR13, 0); 2337 2338 logcwmin = 5; 2339 preload = (ic->ic_opmode == IEEE80211_M_STA) ? 384 : 1024; 2340 tmp = logcwmin << 16 | preload; 2341 RAL_WRITE(sc, RT2560_BCNOCSR, tmp); 2342 2343 /* finally, enable TSF synchronization */ 2344 tmp = RT2560_ENABLE_TSF | RT2560_ENABLE_TBCN; 2345 if (ic->ic_opmode == IEEE80211_M_STA) 2346 tmp |= RT2560_ENABLE_TSF_SYNC(1); 2347 else 2348 tmp |= RT2560_ENABLE_TSF_SYNC(2) | 2349 RT2560_ENABLE_BEACON_GENERATOR; 2350 RAL_WRITE(sc, RT2560_CSR14, tmp); 2351 2352 DPRINTF(("enabling TSF synchronization\n")); 2353} 2354 2355void 2356rt2560_update_plcp(struct rt2560_softc *sc) 2357{ 2358 struct ieee80211com *ic = &sc->sc_ic; 2359 2360 /* no short preamble for 1Mbps */ 2361 RAL_WRITE(sc, RT2560_PLCP1MCSR, 0x00700400); 2362 2363 if (!(ic->ic_flags & IEEE80211_F_SHPREAMBLE)) { 2364 /* values taken from the reference driver */ 2365 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380401); 2366 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x00150402); 2367 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b8403); 2368 } else { 2369 /* same values as above or'ed 0x8 */ 2370 RAL_WRITE(sc, RT2560_PLCP2MCSR, 0x00380409); 2371 RAL_WRITE(sc, RT2560_PLCP5p5MCSR, 0x0015040a); 2372 RAL_WRITE(sc, RT2560_PLCP11MCSR, 0x000b840b); 2373 } 2374 2375 DPRINTF(("updating PLCP for %s preamble\n", 2376 (ic->ic_flags & IEEE80211_F_SHPREAMBLE) ? "short" : "long")); 2377} 2378 2379/* 2380 * IEEE 802.11a uses short slot time. Refer to IEEE Std 802.11-1999 pp. 85 to 2381 * know how these values are computed. 2382 */ 2383void 2384rt2560_update_slot(struct rt2560_softc *sc) 2385{ 2386 struct ieee80211com *ic = &sc->sc_ic; 2387 uint8_t slottime; 2388 uint16_t sifs, pifs, difs, eifs; 2389 uint32_t tmp; 2390 2391 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 2392 2393 /* define the MAC slot boundaries */ 2394 sifs = RAL_SIFS - RT2560_RXTX_TURNAROUND; 2395 pifs = sifs + slottime; 2396 difs = sifs + 2 * slottime; 2397 eifs = (ic->ic_curmode == IEEE80211_MODE_11B) ? 364 : 60; 2398 2399 tmp = RAL_READ(sc, RT2560_CSR11); 2400 tmp = (tmp & ~0x1f00) | slottime << 8; 2401 RAL_WRITE(sc, RT2560_CSR11, tmp); 2402 2403 tmp = pifs << 16 | sifs; 2404 RAL_WRITE(sc, RT2560_CSR18, tmp); 2405 2406 tmp = eifs << 16 | difs; 2407 RAL_WRITE(sc, RT2560_CSR19, tmp); 2408 2409 DPRINTF(("setting slottime to %uus\n", slottime)); 2410} 2411 2412void 2413rt2560_set_basicrates(struct rt2560_softc *sc) 2414{ 2415 struct ieee80211com *ic = &sc->sc_ic; 2416 2417 /* update basic rate set */ 2418 if (ic->ic_curmode == IEEE80211_MODE_11B) { 2419 /* 11b basic rates: 1, 2Mbps */ 2420 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x3); 2421 } else if (IEEE80211_IS_CHAN_5GHZ(ic->ic_bss->ni_chan)) { 2422 /* 11a basic rates: 6, 12, 24Mbps */ 2423 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x150); 2424 } else { 2425 /* 11g basic rates: 1, 2, 5.5, 11, 6, 12, 24Mbps */ 2426 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x15f); 2427 } 2428} 2429 2430void 2431rt2560_update_led(struct rt2560_softc *sc, int led1, int led2) 2432{ 2433 uint32_t tmp; 2434 2435 /* set ON period to 70ms and OFF period to 30ms */ 2436 tmp = led1 << 16 | led2 << 17 | 70 << 8 | 30; 2437 RAL_WRITE(sc, RT2560_LEDCSR, tmp); 2438} 2439 2440void 2441rt2560_set_bssid(struct rt2560_softc *sc, uint8_t *bssid) 2442{ 2443 uint32_t tmp; 2444 2445 tmp = bssid[0] | bssid[1] << 8 | bssid[2] << 16 | bssid[3] << 24; 2446 RAL_WRITE(sc, RT2560_CSR5, tmp); 2447 2448 tmp = bssid[4] | bssid[5] << 8; 2449 RAL_WRITE(sc, RT2560_CSR6, tmp); 2450 2451 DPRINTF(("setting BSSID to %s\n", ether_sprintf(bssid))); 2452} 2453 2454void 2455rt2560_set_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2456{ 2457 uint32_t tmp; 2458 2459 tmp = addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24; 2460 RAL_WRITE(sc, RT2560_CSR3, tmp); 2461 2462 tmp = addr[4] | addr[5] << 8; 2463 RAL_WRITE(sc, RT2560_CSR4, tmp); 2464 2465 DPRINTF(("setting MAC address to %s\n", ether_sprintf(addr))); 2466} 2467 2468void 2469rt2560_get_macaddr(struct rt2560_softc *sc, uint8_t *addr) 2470{ 2471 uint32_t tmp; 2472 2473 tmp = RAL_READ(sc, RT2560_CSR3); 2474 addr[0] = tmp & 0xff; 2475 addr[1] = (tmp >> 8) & 0xff; 2476 addr[2] = (tmp >> 16) & 0xff; 2477 addr[3] = (tmp >> 24); 2478 2479 tmp = RAL_READ(sc, RT2560_CSR4); 2480 addr[4] = tmp & 0xff; 2481 addr[5] = (tmp >> 8) & 0xff; 2482} 2483 2484void 2485rt2560_update_promisc(struct rt2560_softc *sc) 2486{ 2487 struct ifnet *ifp = &sc->sc_ic.ic_if; 2488 uint32_t tmp; 2489 2490 tmp = RAL_READ(sc, RT2560_RXCSR0); 2491 2492 tmp &= ~RT2560_DROP_NOT_TO_ME; 2493 if (!(ifp->if_flags & IFF_PROMISC)) 2494 tmp |= RT2560_DROP_NOT_TO_ME; 2495 2496 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2497 2498 DPRINTF(("%s promiscuous mode\n", (ifp->if_flags & IFF_PROMISC) ? 2499 "entering" : "leaving")); 2500} 2501 2502void 2503rt2560_set_txantenna(struct rt2560_softc *sc, int antenna) 2504{ 2505 uint32_t tmp; 2506 uint8_t tx; 2507 2508 tx = rt2560_bbp_read(sc, RT2560_BBP_TX) & ~RT2560_BBP_ANTMASK; 2509 if (antenna == 1) 2510 tx |= RT2560_BBP_ANTA; 2511 else if (antenna == 2) 2512 tx |= RT2560_BBP_ANTB; 2513 else 2514 tx |= RT2560_BBP_DIVERSITY; 2515 2516 /* need to force I/Q flip for RF 2525e, 2526 and 5222 */ 2517 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526 || 2518 sc->rf_rev == RT2560_RF_5222) 2519 tx |= RT2560_BBP_FLIPIQ; 2520 2521 rt2560_bbp_write(sc, RT2560_BBP_TX, tx); 2522 2523 /* update values for CCK and OFDM in BBPCSR1 */ 2524 tmp = RAL_READ(sc, RT2560_BBPCSR1) & ~0x00070007; 2525 tmp |= (tx & 0x7) << 16 | (tx & 0x7); 2526 RAL_WRITE(sc, RT2560_BBPCSR1, tmp); 2527} 2528 2529void 2530rt2560_set_rxantenna(struct rt2560_softc *sc, int antenna) 2531{ 2532 uint8_t rx; 2533 2534 rx = rt2560_bbp_read(sc, RT2560_BBP_RX) & ~RT2560_BBP_ANTMASK; 2535 if (antenna == 1) 2536 rx |= RT2560_BBP_ANTA; 2537 else if (antenna == 2) 2538 rx |= RT2560_BBP_ANTB; 2539 else 2540 rx |= RT2560_BBP_DIVERSITY; 2541 2542 /* need to force no I/Q flip for RF 2525e and 2526 */ 2543 if (sc->rf_rev == RT2560_RF_2525E || sc->rf_rev == RT2560_RF_2526) 2544 rx &= ~RT2560_BBP_FLIPIQ; 2545 2546 rt2560_bbp_write(sc, RT2560_BBP_RX, rx); 2547} 2548 2549const char * 2550rt2560_get_rf(int rev) 2551{ 2552 switch (rev) { 2553 case RT2560_RF_2522: return "RT2522"; 2554 case RT2560_RF_2523: return "RT2523"; 2555 case RT2560_RF_2524: return "RT2524"; 2556 case RT2560_RF_2525: return "RT2525"; 2557 case RT2560_RF_2525E: return "RT2525e"; 2558 case RT2560_RF_2526: return "RT2526"; 2559 case RT2560_RF_5222: return "RT5222"; 2560 default: return "unknown"; 2561 } 2562} 2563 2564void 2565rt2560_read_eeprom(struct rt2560_softc *sc) 2566{ 2567 uint16_t val; 2568 int i; 2569 2570 val = rt2560_eeprom_read(sc, RT2560_EEPROM_CONFIG0); 2571 sc->rf_rev = (val >> 11) & 0x1f; 2572 sc->hw_radio = (val >> 10) & 0x1; 2573 sc->led_mode = (val >> 6) & 0x7; 2574 sc->rx_ant = (val >> 4) & 0x3; 2575 sc->tx_ant = (val >> 2) & 0x3; 2576 sc->nb_ant = val & 0x3; 2577 2578 /* read default values for BBP registers */ 2579 for (i = 0; i < 16; i++) { 2580 val = rt2560_eeprom_read(sc, RT2560_EEPROM_BBP_BASE + i); 2581 sc->bbp_prom[i].reg = val >> 8; 2582 sc->bbp_prom[i].val = val & 0xff; 2583 } 2584 2585 /* read Tx power for all b/g channels */ 2586 for (i = 0; i < 14 / 2; i++) { 2587 val = rt2560_eeprom_read(sc, RT2560_EEPROM_TXPOWER + i); 2588 sc->txpow[i * 2] = val >> 8; 2589 sc->txpow[i * 2 + 1] = val & 0xff; 2590 } 2591} 2592 2593int 2594rt2560_bbp_init(struct rt2560_softc *sc) 2595{ 2596#define N(a) (sizeof (a) / sizeof ((a)[0])) 2597 int i, ntries; 2598 2599 /* wait for BBP to be ready */ 2600 for (ntries = 0; ntries < 100; ntries++) { 2601 if (rt2560_bbp_read(sc, RT2560_BBP_VERSION) != 0) 2602 break; 2603 DELAY(1); 2604 } 2605 if (ntries == 100) { 2606 printf("%s: timeout waiting for BBP\n", sc->sc_dev.dv_xname); 2607 return EIO; 2608 } 2609 2610 /* initialize BBP registers to default values */ 2611 for (i = 0; i < N(rt2560_def_bbp); i++) { 2612 rt2560_bbp_write(sc, rt2560_def_bbp[i].reg, 2613 rt2560_def_bbp[i].val); 2614 } 2615#if 0 2616 /* initialize BBP registers to values stored in EEPROM */ 2617 for (i = 0; i < 16; i++) { 2618 if (sc->bbp_prom[i].reg == 0xff) 2619 continue; 2620 rt2560_bbp_write(sc, sc->bbp_prom[i].reg, sc->bbp_prom[i].val); 2621 } 2622#endif 2623 2624 return 0; 2625#undef N 2626} 2627 2628int 2629rt2560_init(struct ifnet *ifp) 2630{ 2631#define N(a) (sizeof (a) / sizeof ((a)[0])) 2632 struct rt2560_softc *sc = ifp->if_softc; 2633 struct ieee80211com *ic = &sc->sc_ic; 2634 uint32_t tmp; 2635 int i; 2636 2637 /* for CardBus, power on the socket */ 2638 if (!(sc->sc_flags & RT2560_ENABLED)) { 2639 if (sc->sc_enable != NULL && (*sc->sc_enable)(sc) != 0) { 2640 printf("%s: could not enable device\n", 2641 sc->sc_dev.dv_xname); 2642 return EIO; 2643 } 2644 sc->sc_flags |= RT2560_ENABLED; 2645 } 2646 2647 rt2560_stop(ifp, 0); 2648 2649 /* setup tx rings */ 2650 tmp = RT2560_PRIO_RING_COUNT << 24 | 2651 RT2560_ATIM_RING_COUNT << 16 | 2652 RT2560_TX_RING_COUNT << 8 | 2653 RT2560_TX_DESC_SIZE; 2654 2655 /* rings _must_ be initialized in this _exact_ order! */ 2656 RAL_WRITE(sc, RT2560_TXCSR2, tmp); 2657 RAL_WRITE(sc, RT2560_TXCSR3, sc->txq.physaddr); 2658 RAL_WRITE(sc, RT2560_TXCSR5, sc->prioq.physaddr); 2659 RAL_WRITE(sc, RT2560_TXCSR4, sc->atimq.physaddr); 2660 RAL_WRITE(sc, RT2560_TXCSR6, sc->bcnq.physaddr); 2661 2662 /* setup rx ring */ 2663 tmp = RT2560_RX_RING_COUNT << 8 | RT2560_RX_DESC_SIZE; 2664 2665 RAL_WRITE(sc, RT2560_RXCSR1, tmp); 2666 RAL_WRITE(sc, RT2560_RXCSR2, sc->rxq.physaddr); 2667 2668 /* initialize MAC registers to default values */ 2669 for (i = 0; i < N(rt2560_def_mac); i++) 2670 RAL_WRITE(sc, rt2560_def_mac[i].reg, rt2560_def_mac[i].val); 2671 2672 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 2673 rt2560_set_macaddr(sc, ic->ic_myaddr); 2674 2675 /* set basic rate set (will be updated later) */ 2676 RAL_WRITE(sc, RT2560_ARSP_PLCP_1, 0x153); 2677 2678 rt2560_set_txantenna(sc, 1); 2679 rt2560_set_rxantenna(sc, 1); 2680 rt2560_update_slot(sc); 2681 rt2560_update_plcp(sc); 2682 rt2560_update_led(sc, 0, 0); 2683 2684 RAL_WRITE(sc, RT2560_CSR1, RT2560_RESET_ASIC); 2685 RAL_WRITE(sc, RT2560_CSR1, RT2560_HOST_READY); 2686 2687 if (rt2560_bbp_init(sc) != 0) { 2688 rt2560_stop(ifp, 1); 2689 return EIO; 2690 } 2691 2692 /* set default BSS channel */ 2693 ic->ic_bss->ni_chan = ic->ic_ibss_chan; 2694 rt2560_set_chan(sc, ic->ic_bss->ni_chan); 2695 2696 /* kick Rx */ 2697 tmp = RT2560_DROP_PHY_ERROR | RT2560_DROP_CRC_ERROR; 2698 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2699 tmp |= RT2560_DROP_CTL | RT2560_DROP_VERSION_ERROR; 2700 if (ic->ic_opmode != IEEE80211_M_HOSTAP) 2701 tmp |= RT2560_DROP_TODS; 2702 if (!(ifp->if_flags & IFF_PROMISC)) 2703 tmp |= RT2560_DROP_NOT_TO_ME; 2704 } 2705 RAL_WRITE(sc, RT2560_RXCSR0, tmp); 2706 2707 /* clear old FCS and Rx FIFO errors */ 2708 RAL_READ(sc, RT2560_CNT0); 2709 RAL_READ(sc, RT2560_CNT4); 2710 2711 /* clear any pending interrupts */ 2712 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2713 2714 /* enable interrupts */ 2715 RAL_WRITE(sc, RT2560_CSR8, RT2560_INTR_MASK); 2716 2717 ifp->if_flags &= ~IFF_OACTIVE; 2718 ifp->if_flags |= IFF_RUNNING; 2719 2720 if (ic->ic_opmode == IEEE80211_M_MONITOR) 2721 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2722 else 2723 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2724 2725 return 0; 2726#undef N 2727} 2728 2729void 2730rt2560_stop(struct ifnet *ifp, int disable) 2731{ 2732 struct rt2560_softc *sc = ifp->if_softc; 2733 struct ieee80211com *ic = &sc->sc_ic; 2734 2735 sc->sc_tx_timer = 0; 2736 ifp->if_timer = 0; 2737 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2738 2739 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); /* free all nodes */ 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 (and thus, 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 /* clear any pending interrupt */ 2755 RAL_WRITE(sc, RT2560_CSR7, 0xffffffff); 2756 2757 /* reset Tx and Rx rings */ 2758 rt2560_reset_tx_ring(sc, &sc->txq); 2759 rt2560_reset_tx_ring(sc, &sc->atimq); 2760 rt2560_reset_tx_ring(sc, &sc->prioq); 2761 rt2560_reset_tx_ring(sc, &sc->bcnq); 2762 rt2560_reset_rx_ring(sc, &sc->rxq); 2763 2764 /* for CardBus, power down the socket */ 2765 if (disable && sc->sc_disable != NULL) { 2766 if (sc->sc_flags & RT2560_ENABLED) { 2767 (*sc->sc_disable)(sc); 2768 sc->sc_flags &= ~RT2560_ENABLED; 2769 } 2770 } 2771} 2772 2773void 2774rt2560_power(int why, void *arg) 2775{ 2776 struct rt2560_softc *sc = arg; 2777 struct ifnet *ifp = &sc->sc_ic.ic_if; 2778 int s; 2779 2780 DPRINTF(("%s: rt2560_power(%d)\n", sc->sc_dev.dv_xname, why)); 2781 2782 s = splnet(); 2783 switch (why) { 2784 case PWR_SUSPEND: 2785 case PWR_STANDBY: 2786 rt2560_stop(ifp, 1); 2787 if (sc->sc_power != NULL) 2788 (*sc->sc_power)(sc, why); 2789 break; 2790 case PWR_RESUME: 2791 if (ifp->if_flags & IFF_UP) { 2792 rt2560_init(ifp); 2793 if (sc->sc_power != NULL) 2794 (*sc->sc_power)(sc, why); 2795 if (ifp->if_flags & IFF_RUNNING) 2796 rt2560_start(ifp); 2797 } 2798 break; 2799 } 2800 splx(s); 2801} 2802 2803void 2804rt2560_shutdown(void *arg) 2805{ 2806 struct rt2560_softc *sc = arg; 2807 2808 rt2560_stop(&sc->sc_ic.ic_if, 1); 2809} 2810 2811struct cfdriver ral_cd = { 2812 NULL, "ral", DV_IFNET 2813}; 2814