if_rtwn.c revision 295865
1/* $OpenBSD: if_rtwn.c,v 1.6 2015/08/28 00:03:53 deraadt Exp $ */ 2 3/*- 4 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5 * Copyright (c) 2015 Stefan Sperling <stsp@openbsd.org> 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/rtwn/if_rtwn.c 295865 2016-02-21 18:51:48Z avos $"); 22 23/* 24 * Driver for Realtek RTL8188CE 25 */ 26 27#include <sys/param.h> 28#include <sys/sysctl.h> 29#include <sys/sockio.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/lock.h> 36#include <sys/mutex.h> 37#include <sys/module.h> 38#include <sys/bus.h> 39#include <sys/endian.h> 40#include <sys/firmware.h> 41 42#include <machine/bus.h> 43#include <machine/resource.h> 44#include <sys/rman.h> 45 46#include <dev/pci/pcireg.h> 47#include <dev/pci/pcivar.h> 48 49#include <net/bpf.h> 50#include <net/if.h> 51#include <net/if_var.h> 52#include <net/if_arp.h> 53#include <net/ethernet.h> 54#include <net/if_dl.h> 55#include <net/if_media.h> 56#include <net/if_types.h> 57 58#include <net80211/ieee80211_var.h> 59#include <net80211/ieee80211_radiotap.h> 60#include <net80211/ieee80211_regdomain.h> 61#include <net80211/ieee80211_ratectl.h> 62 63#include <netinet/in.h> 64#include <netinet/in_systm.h> 65#include <netinet/in_var.h> 66#include <netinet/ip.h> 67#include <netinet/if_ether.h> 68 69#include <dev/rtwn/if_rtwnreg.h> 70 71#define RTWN_DEBUG 72#ifdef RTWN_DEBUG 73#define DPRINTF(x) do { if (sc->sc_debug > 0) printf x; } while (0) 74#define DPRINTFN(n, x) do { if (sc->sc_debug >= (n)) printf x; } while (0) 75#else 76#define DPRINTF(x) 77#define DPRINTFN(n, x) 78#endif 79 80/* 81 * PCI configuration space registers. 82 */ 83#define RTWN_PCI_IOBA 0x10 /* i/o mapped base */ 84#define RTWN_PCI_MMBA 0x18 /* memory mapped base */ 85 86#define RTWN_INT_ENABLE (R92C_IMR_ROK | R92C_IMR_VODOK | R92C_IMR_VIDOK | \ 87 R92C_IMR_BEDOK | R92C_IMR_BKDOK | R92C_IMR_MGNTDOK | \ 88 R92C_IMR_HIGHDOK | R92C_IMR_BDOK | R92C_IMR_RDU | \ 89 R92C_IMR_RXFOVW) 90 91struct rtwn_ident { 92 uint16_t vendor; 93 uint16_t device; 94 const char *name; 95}; 96 97 98static const struct rtwn_ident rtwn_ident_table[] = { 99 { 0x10ec, 0x8176, "Realtek RTL8188CE" }, 100 { 0, 0, NULL } 101}; 102 103 104static void rtwn_dma_map_addr(void *, bus_dma_segment_t *, int, int); 105static void rtwn_setup_rx_desc(struct rtwn_softc *, struct r92c_rx_desc *, 106 bus_addr_t, size_t, int); 107static int rtwn_alloc_rx_list(struct rtwn_softc *); 108static void rtwn_reset_rx_list(struct rtwn_softc *); 109static void rtwn_free_rx_list(struct rtwn_softc *); 110static int rtwn_alloc_tx_list(struct rtwn_softc *, int); 111static void rtwn_reset_tx_list(struct rtwn_softc *, int); 112static void rtwn_free_tx_list(struct rtwn_softc *, int); 113static struct ieee80211vap *rtwn_vap_create(struct ieee80211com *, 114 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 115 const uint8_t [IEEE80211_ADDR_LEN], 116 const uint8_t [IEEE80211_ADDR_LEN]); 117static void rtwn_vap_delete(struct ieee80211vap *); 118static void rtwn_write_1(struct rtwn_softc *, uint16_t, uint8_t); 119static void rtwn_write_2(struct rtwn_softc *, uint16_t, uint16_t); 120static void rtwn_write_4(struct rtwn_softc *, uint16_t, uint32_t); 121static uint8_t rtwn_read_1(struct rtwn_softc *, uint16_t); 122static uint16_t rtwn_read_2(struct rtwn_softc *, uint16_t); 123static uint32_t rtwn_read_4(struct rtwn_softc *, uint16_t); 124static int rtwn_fw_cmd(struct rtwn_softc *, uint8_t, const void *, int); 125static void rtwn_rf_write(struct rtwn_softc *, int, uint8_t, uint32_t); 126static uint32_t rtwn_rf_read(struct rtwn_softc *, int, uint8_t); 127static int rtwn_llt_write(struct rtwn_softc *, uint32_t, uint32_t); 128static uint8_t rtwn_efuse_read_1(struct rtwn_softc *, uint16_t); 129static void rtwn_efuse_read(struct rtwn_softc *); 130static int rtwn_read_chipid(struct rtwn_softc *); 131static void rtwn_read_rom(struct rtwn_softc *); 132static int rtwn_ra_init(struct rtwn_softc *); 133static void rtwn_tsf_sync_enable(struct rtwn_softc *); 134static void rtwn_set_led(struct rtwn_softc *, int, int); 135static void rtwn_calib_to(void *); 136static int rtwn_newstate(struct ieee80211vap *, enum ieee80211_state, int); 137static int rtwn_updateedca(struct ieee80211com *); 138static void rtwn_update_avgrssi(struct rtwn_softc *, int, int8_t); 139static int8_t rtwn_get_rssi(struct rtwn_softc *, int, void *); 140static void rtwn_rx_frame(struct rtwn_softc *, struct r92c_rx_desc *, 141 struct rtwn_rx_data *, int); 142static int rtwn_tx(struct rtwn_softc *, struct mbuf *, 143 struct ieee80211_node *); 144static void rtwn_tx_done(struct rtwn_softc *, int); 145static int rtwn_raw_xmit(struct ieee80211_node *, struct mbuf *, 146 const struct ieee80211_bpf_params *); 147static int rtwn_transmit(struct ieee80211com *, struct mbuf *); 148static void rtwn_parent(struct ieee80211com *); 149static void rtwn_start(struct rtwn_softc *sc); 150static void rtwn_watchdog(void *); 151static int rtwn_power_on(struct rtwn_softc *); 152static int rtwn_llt_init(struct rtwn_softc *); 153static void rtwn_fw_reset(struct rtwn_softc *); 154static void rtwn_fw_loadpage(struct rtwn_softc *, int, const uint8_t *, 155 int); 156static int rtwn_load_firmware(struct rtwn_softc *); 157static int rtwn_dma_init(struct rtwn_softc *); 158static void rtwn_mac_init(struct rtwn_softc *); 159static void rtwn_bb_init(struct rtwn_softc *); 160static void rtwn_rf_init(struct rtwn_softc *); 161static void rtwn_cam_init(struct rtwn_softc *); 162static void rtwn_pa_bias_init(struct rtwn_softc *); 163static void rtwn_rxfilter_init(struct rtwn_softc *); 164static void rtwn_edca_init(struct rtwn_softc *); 165static void rtwn_write_txpower(struct rtwn_softc *, int, uint16_t[]); 166static void rtwn_get_txpower(struct rtwn_softc *, int, 167 struct ieee80211_channel *, struct ieee80211_channel *, 168 uint16_t[]); 169static void rtwn_set_txpower(struct rtwn_softc *, 170 struct ieee80211_channel *, struct ieee80211_channel *); 171static void rtwn_set_rx_bssid_all(struct rtwn_softc *, int); 172static void rtwn_set_gain(struct rtwn_softc *, uint8_t); 173static void rtwn_scan_start(struct ieee80211com *); 174static void rtwn_scan_end(struct ieee80211com *); 175static void rtwn_set_channel(struct ieee80211com *); 176static void rtwn_update_mcast(struct ieee80211com *); 177static void rtwn_set_chan(struct rtwn_softc *, 178 struct ieee80211_channel *, struct ieee80211_channel *); 179static int rtwn_iq_calib_chain(struct rtwn_softc *, int, uint16_t[2], 180 uint16_t[2]); 181static void rtwn_iq_calib_run(struct rtwn_softc *, int, uint16_t[2][2], 182 uint16_t[2][2]); 183static int rtwn_iq_calib_compare_results(uint16_t[2][2], uint16_t[2][2], 184 uint16_t[2][2], uint16_t[2][2], int); 185static void rtwn_iq_calib_write_results(struct rtwn_softc *, uint16_t[2], 186 uint16_t[2], int); 187static void rtwn_iq_calib(struct rtwn_softc *); 188static void rtwn_lc_calib(struct rtwn_softc *); 189static void rtwn_temp_calib(struct rtwn_softc *); 190static int rtwn_init(struct rtwn_softc *); 191static void rtwn_stop_locked(struct rtwn_softc *); 192static void rtwn_stop(struct rtwn_softc *); 193static void rtwn_intr(void *); 194 195/* Aliases. */ 196#define rtwn_bb_write rtwn_write_4 197#define rtwn_bb_read rtwn_read_4 198 199static int rtwn_probe(device_t); 200static int rtwn_attach(device_t); 201static int rtwn_detach(device_t); 202static int rtwn_shutdown(device_t); 203static int rtwn_suspend(device_t); 204static int rtwn_resume(device_t); 205 206static device_method_t rtwn_methods[] = { 207 /* Device interface */ 208 DEVMETHOD(device_probe, rtwn_probe), 209 DEVMETHOD(device_attach, rtwn_attach), 210 DEVMETHOD(device_detach, rtwn_detach), 211 DEVMETHOD(device_shutdown, rtwn_shutdown), 212 DEVMETHOD(device_suspend, rtwn_suspend), 213 DEVMETHOD(device_resume, rtwn_resume), 214 215 DEVMETHOD_END 216}; 217 218static driver_t rtwn_driver = { 219 "rtwn", 220 rtwn_methods, 221 sizeof (struct rtwn_softc) 222}; 223static devclass_t rtwn_devclass; 224 225DRIVER_MODULE(rtwn, pci, rtwn_driver, rtwn_devclass, NULL, NULL); 226 227MODULE_VERSION(rtwn, 1); 228 229MODULE_DEPEND(rtwn, pci, 1, 1, 1); 230MODULE_DEPEND(rtwn, wlan, 1, 1, 1); 231MODULE_DEPEND(rtwn, firmware, 1, 1, 1); 232 233static int 234rtwn_probe(device_t dev) 235{ 236 const struct rtwn_ident *ident; 237 238 for (ident = rtwn_ident_table; ident->name != NULL; ident++) { 239 if (pci_get_vendor(dev) == ident->vendor && 240 pci_get_device(dev) == ident->device) { 241 device_set_desc(dev, ident->name); 242 return (BUS_PROBE_DEFAULT); 243 } 244 } 245 return (ENXIO); 246} 247 248static int 249rtwn_attach(device_t dev) 250{ 251 struct rtwn_softc *sc = device_get_softc(dev); 252 struct ieee80211com *ic = &sc->sc_ic; 253 uint32_t lcsr; 254 uint8_t bands[howmany(IEEE80211_MODE_MAX, 8)]; 255 int i, count, error, rid; 256 257 sc->sc_dev = dev; 258 sc->sc_debug = 0; 259 260 /* 261 * Get the offset of the PCI Express Capability Structure in PCI 262 * Configuration Space. 263 */ 264 error = pci_find_cap(dev, PCIY_EXPRESS, &sc->sc_cap_off); 265 if (error != 0) { 266 device_printf(dev, "PCIe capability structure not found!\n"); 267 return (error); 268 } 269 270 /* Enable bus-mastering. */ 271 pci_enable_busmaster(dev); 272 273 rid = PCIR_BAR(2); 274 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 275 RF_ACTIVE); 276 if (sc->mem == NULL) { 277 device_printf(dev, "can't map mem space\n"); 278 return (ENOMEM); 279 } 280 sc->sc_st = rman_get_bustag(sc->mem); 281 sc->sc_sh = rman_get_bushandle(sc->mem); 282 283 /* Install interrupt handler. */ 284 count = 1; 285 rid = 0; 286 if (pci_alloc_msi(dev, &count) == 0) 287 rid = 1; 288 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | 289 (rid != 0 ? 0 : RF_SHAREABLE)); 290 if (sc->irq == NULL) { 291 device_printf(dev, "can't map interrupt\n"); 292 return (ENXIO); 293 } 294 295 RTWN_LOCK_INIT(sc); 296 callout_init_mtx(&sc->calib_to, &sc->sc_mtx, 0); 297 callout_init_mtx(&sc->watchdog_to, &sc->sc_mtx, 0); 298 mbufq_init(&sc->sc_snd, ifqmaxlen); 299 300 error = rtwn_read_chipid(sc); 301 if (error != 0) { 302 device_printf(dev, "unsupported test chip\n"); 303 goto fail; 304 } 305 306 /* Disable PCIe Active State Power Management (ASPM). */ 307 lcsr = pci_read_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, 4); 308 lcsr &= ~PCIEM_LINK_CTL_ASPMC; 309 pci_write_config(sc->sc_dev, sc->sc_cap_off + PCIER_LINK_CTL, lcsr, 4); 310 311 /* Allocate Tx/Rx buffers. */ 312 error = rtwn_alloc_rx_list(sc); 313 if (error != 0) { 314 device_printf(dev, "could not allocate Rx buffers\n"); 315 goto fail; 316 } 317 for (i = 0; i < RTWN_NTXQUEUES; i++) { 318 error = rtwn_alloc_tx_list(sc, i); 319 if (error != 0) { 320 device_printf(dev, "could not allocate Tx buffers\n"); 321 goto fail; 322 } 323 } 324 325 /* Determine number of Tx/Rx chains. */ 326 if (sc->chip & RTWN_CHIP_92C) { 327 sc->ntxchains = (sc->chip & RTWN_CHIP_92C_1T2R) ? 1 : 2; 328 sc->nrxchains = 2; 329 } else { 330 sc->ntxchains = 1; 331 sc->nrxchains = 1; 332 } 333 rtwn_read_rom(sc); 334 335 device_printf(sc->sc_dev, "MAC/BB RTL%s, RF 6052 %dT%dR\n", 336 (sc->chip & RTWN_CHIP_92C) ? "8192CE" : "8188CE", 337 sc->ntxchains, sc->nrxchains); 338 339 ic->ic_softc = sc; 340 ic->ic_name = device_get_nameunit(dev); 341 ic->ic_opmode = IEEE80211_M_STA; 342 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 343 344 /* set device capabilities */ 345 ic->ic_caps = 346 IEEE80211_C_STA /* station mode */ 347 | IEEE80211_C_MONITOR /* monitor mode */ 348 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 349 | IEEE80211_C_SHSLOT /* short slot time supported */ 350 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */ 351 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 352 | IEEE80211_C_WME /* 802.11e */ 353 ; 354 355 memset(bands, 0, sizeof(bands)); 356 setbit(bands, IEEE80211_MODE_11B); 357 setbit(bands, IEEE80211_MODE_11G); 358 ieee80211_init_channels(ic, NULL, bands); 359 360 ieee80211_ifattach(ic); 361 362 ic->ic_wme.wme_update = rtwn_updateedca; 363 ic->ic_update_mcast = rtwn_update_mcast; 364 ic->ic_scan_start =rtwn_scan_start; 365 ic->ic_scan_end = rtwn_scan_end; 366 ic->ic_set_channel = rtwn_set_channel; 367 ic->ic_raw_xmit = rtwn_raw_xmit; 368 ic->ic_transmit = rtwn_transmit; 369 ic->ic_parent = rtwn_parent; 370 ic->ic_vap_create = rtwn_vap_create; 371 ic->ic_vap_delete = rtwn_vap_delete; 372 373 ieee80211_radiotap_attach(ic, 374 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 375 RTWN_TX_RADIOTAP_PRESENT, 376 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 377 RTWN_RX_RADIOTAP_PRESENT); 378 379 /* 380 * Hook our interrupt after all initialization is complete. 381 */ 382 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 383 NULL, rtwn_intr, sc, &sc->sc_ih); 384 if (error != 0) { 385 device_printf(dev, "can't establish interrupt, error %d\n", 386 error); 387 goto fail; 388 } 389 390 if (bootverbose) 391 ieee80211_announce(ic); 392 393 return (0); 394 395fail: 396 rtwn_detach(dev); 397 return (error); 398} 399 400 401static int 402rtwn_detach(device_t dev) 403{ 404 struct rtwn_softc *sc = device_get_softc(dev); 405 int i; 406 407 if (sc->sc_ic.ic_softc != NULL) { 408 rtwn_stop(sc); 409 410 callout_drain(&sc->calib_to); 411 callout_drain(&sc->watchdog_to); 412 ieee80211_ifdetach(&sc->sc_ic); 413 mbufq_drain(&sc->sc_snd); 414 } 415 416 /* Uninstall interrupt handler. */ 417 if (sc->irq != NULL) { 418 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 419 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), 420 sc->irq); 421 pci_release_msi(dev); 422 } 423 424 /* Free Tx/Rx buffers. */ 425 for (i = 0; i < RTWN_NTXQUEUES; i++) 426 rtwn_free_tx_list(sc, i); 427 rtwn_free_rx_list(sc); 428 429 if (sc->mem != NULL) 430 bus_release_resource(dev, SYS_RES_MEMORY, 431 rman_get_rid(sc->mem), sc->mem); 432 433 RTWN_LOCK_DESTROY(sc); 434 return (0); 435} 436 437static int 438rtwn_shutdown(device_t dev) 439{ 440 441 return (0); 442} 443 444static int 445rtwn_suspend(device_t dev) 446{ 447 return (0); 448} 449 450static int 451rtwn_resume(device_t dev) 452{ 453 454 return (0); 455} 456 457static void 458rtwn_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nsegs, int error) 459{ 460 461 if (error != 0) 462 return; 463 KASSERT(nsegs == 1, ("too many DMA segments, %d should be 1", nsegs)); 464 *(bus_addr_t *)arg = segs[0].ds_addr; 465} 466 467static void 468rtwn_setup_rx_desc(struct rtwn_softc *sc, struct r92c_rx_desc *desc, 469 bus_addr_t addr, size_t len, int idx) 470{ 471 472 memset(desc, 0, sizeof(*desc)); 473 desc->rxdw0 = htole32(SM(R92C_RXDW0_PKTLEN, len) | 474 ((idx == RTWN_RX_LIST_COUNT - 1) ? R92C_RXDW0_EOR : 0)); 475 desc->rxbufaddr = htole32(addr); 476 bus_space_barrier(sc->sc_st, sc->sc_sh, 0, sc->sc_mapsize, 477 BUS_SPACE_BARRIER_WRITE); 478 desc->rxdw0 |= htole32(R92C_RXDW0_OWN); 479} 480 481static int 482rtwn_alloc_rx_list(struct rtwn_softc *sc) 483{ 484 struct rtwn_rx_ring *rx_ring = &sc->rx_ring; 485 struct rtwn_rx_data *rx_data; 486 bus_size_t size; 487 int i, error; 488 489 /* Allocate Rx descriptors. */ 490 size = sizeof(struct r92c_rx_desc) * RTWN_RX_LIST_COUNT; 491 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 492 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 493 size, 1, size, 0, NULL, NULL, &rx_ring->desc_dmat); 494 if (error != 0) { 495 device_printf(sc->sc_dev, "could not create rx desc DMA tag\n"); 496 goto fail; 497 } 498 499 error = bus_dmamem_alloc(rx_ring->desc_dmat, (void **)&rx_ring->desc, 500 BUS_DMA_NOWAIT | BUS_DMA_ZERO | BUS_DMA_COHERENT, 501 &rx_ring->desc_map); 502 if (error != 0) { 503 device_printf(sc->sc_dev, "could not allocate rx desc\n"); 504 goto fail; 505 } 506 error = bus_dmamap_load(rx_ring->desc_dmat, rx_ring->desc_map, 507 rx_ring->desc, size, rtwn_dma_map_addr, &rx_ring->paddr, 0); 508 if (error != 0) { 509 device_printf(sc->sc_dev, "could not load rx desc DMA map\n"); 510 goto fail; 511 } 512 bus_dmamap_sync(rx_ring->desc_dmat, rx_ring->desc_map, 513 BUS_DMASYNC_PREWRITE); 514 515 /* Create RX buffer DMA tag. */ 516 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 517 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 518 1, MCLBYTES, 0, NULL, NULL, &rx_ring->data_dmat); 519 if (error != 0) { 520 device_printf(sc->sc_dev, "could not create rx buf DMA tag\n"); 521 goto fail; 522 } 523 524 /* Allocate Rx buffers. */ 525 for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { 526 rx_data = &rx_ring->rx_data[i]; 527 error = bus_dmamap_create(rx_ring->data_dmat, 0, &rx_data->map); 528 if (error != 0) { 529 device_printf(sc->sc_dev, 530 "could not create rx buf DMA map\n"); 531 goto fail; 532 } 533 534 rx_data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 535 if (rx_data->m == NULL) { 536 device_printf(sc->sc_dev, 537 "could not allocate rx mbuf\n"); 538 error = ENOMEM; 539 goto fail; 540 } 541 542 error = bus_dmamap_load(rx_ring->data_dmat, rx_data->map, 543 mtod(rx_data->m, void *), MCLBYTES, rtwn_dma_map_addr, 544 &rx_data->paddr, BUS_DMA_NOWAIT); 545 if (error != 0) { 546 device_printf(sc->sc_dev, 547 "could not load rx buf DMA map"); 548 goto fail; 549 } 550 551 rtwn_setup_rx_desc(sc, &rx_ring->desc[i], rx_data->paddr, 552 MCLBYTES, i); 553 } 554 return (0); 555 556fail: 557 rtwn_free_rx_list(sc); 558 return (error); 559} 560 561static void 562rtwn_reset_rx_list(struct rtwn_softc *sc) 563{ 564 struct rtwn_rx_ring *rx_ring = &sc->rx_ring; 565 struct rtwn_rx_data *rx_data; 566 int i; 567 568 for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { 569 rx_data = &rx_ring->rx_data[i]; 570 rtwn_setup_rx_desc(sc, &rx_ring->desc[i], rx_data->paddr, 571 MCLBYTES, i); 572 } 573} 574 575static void 576rtwn_free_rx_list(struct rtwn_softc *sc) 577{ 578 struct rtwn_rx_ring *rx_ring = &sc->rx_ring; 579 struct rtwn_rx_data *rx_data; 580 int i; 581 582 if (rx_ring->desc_dmat != NULL) { 583 if (rx_ring->desc != NULL) { 584 bus_dmamap_unload(rx_ring->desc_dmat, 585 rx_ring->desc_map); 586 bus_dmamem_free(rx_ring->desc_dmat, rx_ring->desc, 587 rx_ring->desc_map); 588 rx_ring->desc = NULL; 589 } 590 bus_dma_tag_destroy(rx_ring->desc_dmat); 591 rx_ring->desc_dmat = NULL; 592 } 593 594 for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { 595 rx_data = &rx_ring->rx_data[i]; 596 597 if (rx_data->m != NULL) { 598 bus_dmamap_unload(rx_ring->data_dmat, rx_data->map); 599 m_freem(rx_data->m); 600 rx_data->m = NULL; 601 } 602 bus_dmamap_destroy(rx_ring->data_dmat, rx_data->map); 603 rx_data->map = NULL; 604 } 605 if (rx_ring->data_dmat != NULL) { 606 bus_dma_tag_destroy(rx_ring->data_dmat); 607 rx_ring->data_dmat = NULL; 608 } 609} 610 611static int 612rtwn_alloc_tx_list(struct rtwn_softc *sc, int qid) 613{ 614 struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; 615 struct rtwn_tx_data *tx_data; 616 bus_size_t size; 617 int i, error; 618 619 size = sizeof(struct r92c_tx_desc) * RTWN_TX_LIST_COUNT; 620 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), PAGE_SIZE, 0, 621 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 622 size, 1, size, 0, NULL, NULL, &tx_ring->desc_dmat); 623 if (error != 0) { 624 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n"); 625 goto fail; 626 } 627 628 error = bus_dmamem_alloc(tx_ring->desc_dmat, (void **)&tx_ring->desc, 629 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &tx_ring->desc_map); 630 if (error != 0) { 631 device_printf(sc->sc_dev, "can't map tx ring DMA memory\n"); 632 goto fail; 633 } 634 error = bus_dmamap_load(tx_ring->desc_dmat, tx_ring->desc_map, 635 tx_ring->desc, size, rtwn_dma_map_addr, &tx_ring->paddr, 636 BUS_DMA_NOWAIT); 637 if (error != 0) { 638 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 639 goto fail; 640 } 641 642 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 643 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 644 1, MCLBYTES, 0, NULL, NULL, &tx_ring->data_dmat); 645 if (error != 0) { 646 device_printf(sc->sc_dev, "could not create tx buf DMA tag\n"); 647 goto fail; 648 } 649 650 for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { 651 struct r92c_tx_desc *desc = &tx_ring->desc[i]; 652 653 /* setup tx desc */ 654 desc->nextdescaddr = htole32(tx_ring->paddr + 655 + sizeof(struct r92c_tx_desc) 656 * ((i + 1) % RTWN_TX_LIST_COUNT)); 657 tx_data = &tx_ring->tx_data[i]; 658 error = bus_dmamap_create(tx_ring->data_dmat, 0, &tx_data->map); 659 if (error != 0) { 660 device_printf(sc->sc_dev, 661 "could not create tx buf DMA map\n"); 662 goto fail; 663 } 664 tx_data->m = NULL; 665 tx_data->ni = NULL; 666 } 667 return (0); 668 669fail: 670 rtwn_free_tx_list(sc, qid); 671 return (error); 672} 673 674static void 675rtwn_reset_tx_list(struct rtwn_softc *sc, int qid) 676{ 677 struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; 678 int i; 679 680 for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { 681 struct r92c_tx_desc *desc = &tx_ring->desc[i]; 682 struct rtwn_tx_data *tx_data = &tx_ring->tx_data[i]; 683 684 memset(desc, 0, sizeof(*desc) - 685 (sizeof(desc->reserved) + sizeof(desc->nextdescaddr64) + 686 sizeof(desc->nextdescaddr))); 687 688 if (tx_data->m != NULL) { 689 bus_dmamap_unload(tx_ring->data_dmat, tx_data->map); 690 m_freem(tx_data->m); 691 tx_data->m = NULL; 692 } 693 if (tx_data->ni != NULL) { 694 ieee80211_free_node(tx_data->ni); 695 tx_data->ni = NULL; 696 } 697 } 698 699 bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map, 700 BUS_DMASYNC_POSTWRITE); 701 702 sc->qfullmsk &= ~(1 << qid); 703 tx_ring->queued = 0; 704 tx_ring->cur = 0; 705} 706 707static void 708rtwn_free_tx_list(struct rtwn_softc *sc, int qid) 709{ 710 struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; 711 struct rtwn_tx_data *tx_data; 712 int i; 713 714 if (tx_ring->desc_dmat != NULL) { 715 if (tx_ring->desc != NULL) { 716 bus_dmamap_unload(tx_ring->desc_dmat, 717 tx_ring->desc_map); 718 bus_dmamem_free(tx_ring->desc_dmat, tx_ring->desc, 719 tx_ring->desc_map); 720 } 721 bus_dma_tag_destroy(tx_ring->desc_dmat); 722 } 723 724 for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { 725 tx_data = &tx_ring->tx_data[i]; 726 727 if (tx_data->m != NULL) { 728 bus_dmamap_unload(tx_ring->data_dmat, tx_data->map); 729 m_freem(tx_data->m); 730 tx_data->m = NULL; 731 } 732 } 733 if (tx_ring->data_dmat != NULL) { 734 bus_dma_tag_destroy(tx_ring->data_dmat); 735 tx_ring->data_dmat = NULL; 736 } 737 738 sc->qfullmsk &= ~(1 << qid); 739 tx_ring->queued = 0; 740 tx_ring->cur = 0; 741} 742 743 744static struct ieee80211vap * 745rtwn_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 746 enum ieee80211_opmode opmode, int flags, 747 const uint8_t bssid[IEEE80211_ADDR_LEN], 748 const uint8_t mac[IEEE80211_ADDR_LEN]) 749{ 750 struct rtwn_vap *rvp; 751 struct ieee80211vap *vap; 752 753 if (!TAILQ_EMPTY(&ic->ic_vaps)) 754 return (NULL); 755 756 rvp = malloc(sizeof(struct rtwn_vap), M_80211_VAP, M_WAITOK | M_ZERO); 757 vap = &rvp->vap; 758 if (ieee80211_vap_setup(ic, vap, name, unit, opmode, 759 flags | IEEE80211_CLONE_NOBEACONS, bssid) != 0) { 760 /* out of memory */ 761 free(rvp, M_80211_VAP); 762 return (NULL); 763 } 764 765 /* Override state transition machine. */ 766 rvp->newstate = vap->iv_newstate; 767 vap->iv_newstate = rtwn_newstate; 768 769 /* Complete setup. */ 770 ieee80211_vap_attach(vap, ieee80211_media_change, 771 ieee80211_media_status, mac); 772 ic->ic_opmode = opmode; 773 return (vap); 774} 775 776static void 777rtwn_vap_delete(struct ieee80211vap *vap) 778{ 779 struct rtwn_vap *rvp = RTWN_VAP(vap); 780 781 ieee80211_vap_detach(vap); 782 free(rvp, M_80211_VAP); 783} 784 785static void 786rtwn_write_1(struct rtwn_softc *sc, uint16_t addr, uint8_t val) 787{ 788 789 bus_space_write_1(sc->sc_st, sc->sc_sh, addr, val); 790} 791 792static void 793rtwn_write_2(struct rtwn_softc *sc, uint16_t addr, uint16_t val) 794{ 795 796 val = htole16(val); 797 bus_space_write_2(sc->sc_st, sc->sc_sh, addr, val); 798} 799 800static void 801rtwn_write_4(struct rtwn_softc *sc, uint16_t addr, uint32_t val) 802{ 803 804 val = htole32(val); 805 bus_space_write_4(sc->sc_st, sc->sc_sh, addr, val); 806} 807 808static uint8_t 809rtwn_read_1(struct rtwn_softc *sc, uint16_t addr) 810{ 811 812 return (bus_space_read_1(sc->sc_st, sc->sc_sh, addr)); 813} 814 815static uint16_t 816rtwn_read_2(struct rtwn_softc *sc, uint16_t addr) 817{ 818 819 return (bus_space_read_2(sc->sc_st, sc->sc_sh, addr)); 820} 821 822static uint32_t 823rtwn_read_4(struct rtwn_softc *sc, uint16_t addr) 824{ 825 826 return (bus_space_read_4(sc->sc_st, sc->sc_sh, addr)); 827} 828 829static int 830rtwn_fw_cmd(struct rtwn_softc *sc, uint8_t id, const void *buf, int len) 831{ 832 struct r92c_fw_cmd cmd; 833 int ntries; 834 835 /* Wait for current FW box to be empty. */ 836 for (ntries = 0; ntries < 100; ntries++) { 837 if (!(rtwn_read_1(sc, R92C_HMETFR) & (1 << sc->fwcur))) 838 break; 839 DELAY(1); 840 } 841 if (ntries == 100) { 842 device_printf(sc->sc_dev, 843 "could not send firmware command %d\n", id); 844 return (ETIMEDOUT); 845 } 846 memset(&cmd, 0, sizeof(cmd)); 847 cmd.id = id; 848 if (len > 3) 849 cmd.id |= R92C_CMD_FLAG_EXT; 850 KASSERT(len <= sizeof(cmd.msg), ("rtwn_fw_cmd\n")); 851 memcpy(cmd.msg, buf, len); 852 853 /* Write the first word last since that will trigger the FW. */ 854 rtwn_write_2(sc, R92C_HMEBOX_EXT(sc->fwcur), *((uint8_t *)&cmd + 4)); 855 rtwn_write_4(sc, R92C_HMEBOX(sc->fwcur), *((uint8_t *)&cmd + 0)); 856 857 sc->fwcur = (sc->fwcur + 1) % R92C_H2C_NBOX; 858 859 /* Give firmware some time for processing. */ 860 DELAY(2000); 861 862 return (0); 863} 864 865static void 866rtwn_rf_write(struct rtwn_softc *sc, int chain, uint8_t addr, uint32_t val) 867{ 868 rtwn_bb_write(sc, R92C_LSSI_PARAM(chain), 869 SM(R92C_LSSI_PARAM_ADDR, addr) | 870 SM(R92C_LSSI_PARAM_DATA, val)); 871} 872 873static uint32_t 874rtwn_rf_read(struct rtwn_softc *sc, int chain, uint8_t addr) 875{ 876 uint32_t reg[R92C_MAX_CHAINS], val; 877 878 reg[0] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(0)); 879 if (chain != 0) 880 reg[chain] = rtwn_bb_read(sc, R92C_HSSI_PARAM2(chain)); 881 882 rtwn_bb_write(sc, R92C_HSSI_PARAM2(0), 883 reg[0] & ~R92C_HSSI_PARAM2_READ_EDGE); 884 DELAY(1000); 885 886 rtwn_bb_write(sc, R92C_HSSI_PARAM2(chain), 887 RW(reg[chain], R92C_HSSI_PARAM2_READ_ADDR, addr) | 888 R92C_HSSI_PARAM2_READ_EDGE); 889 DELAY(1000); 890 891 rtwn_bb_write(sc, R92C_HSSI_PARAM2(0), 892 reg[0] | R92C_HSSI_PARAM2_READ_EDGE); 893 DELAY(1000); 894 895 if (rtwn_bb_read(sc, R92C_HSSI_PARAM1(chain)) & R92C_HSSI_PARAM1_PI) 896 val = rtwn_bb_read(sc, R92C_HSPI_READBACK(chain)); 897 else 898 val = rtwn_bb_read(sc, R92C_LSSI_READBACK(chain)); 899 return (MS(val, R92C_LSSI_READBACK_DATA)); 900} 901 902static int 903rtwn_llt_write(struct rtwn_softc *sc, uint32_t addr, uint32_t data) 904{ 905 int ntries; 906 907 rtwn_write_4(sc, R92C_LLT_INIT, 908 SM(R92C_LLT_INIT_OP, R92C_LLT_INIT_OP_WRITE) | 909 SM(R92C_LLT_INIT_ADDR, addr) | 910 SM(R92C_LLT_INIT_DATA, data)); 911 /* Wait for write operation to complete. */ 912 for (ntries = 0; ntries < 20; ntries++) { 913 if (MS(rtwn_read_4(sc, R92C_LLT_INIT), R92C_LLT_INIT_OP) == 914 R92C_LLT_INIT_OP_NO_ACTIVE) 915 return (0); 916 DELAY(5); 917 } 918 return (ETIMEDOUT); 919} 920 921static uint8_t 922rtwn_efuse_read_1(struct rtwn_softc *sc, uint16_t addr) 923{ 924 uint32_t reg; 925 int ntries; 926 927 reg = rtwn_read_4(sc, R92C_EFUSE_CTRL); 928 reg = RW(reg, R92C_EFUSE_CTRL_ADDR, addr); 929 reg &= ~R92C_EFUSE_CTRL_VALID; 930 rtwn_write_4(sc, R92C_EFUSE_CTRL, reg); 931 /* Wait for read operation to complete. */ 932 for (ntries = 0; ntries < 100; ntries++) { 933 reg = rtwn_read_4(sc, R92C_EFUSE_CTRL); 934 if (reg & R92C_EFUSE_CTRL_VALID) 935 return (MS(reg, R92C_EFUSE_CTRL_DATA)); 936 DELAY(5); 937 } 938 device_printf(sc->sc_dev, 939 "could not read efuse byte at address 0x%x\n", addr); 940 return (0xff); 941} 942 943static void 944rtwn_efuse_read(struct rtwn_softc *sc) 945{ 946 uint8_t *rom = (uint8_t *)&sc->rom; 947 uint16_t addr = 0; 948 uint32_t reg; 949 uint8_t off, msk; 950 int i; 951 952 reg = rtwn_read_2(sc, R92C_SYS_ISO_CTRL); 953 if (!(reg & R92C_SYS_ISO_CTRL_PWC_EV12V)) { 954 rtwn_write_2(sc, R92C_SYS_ISO_CTRL, 955 reg | R92C_SYS_ISO_CTRL_PWC_EV12V); 956 } 957 reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN); 958 if (!(reg & R92C_SYS_FUNC_EN_ELDR)) { 959 rtwn_write_2(sc, R92C_SYS_FUNC_EN, 960 reg | R92C_SYS_FUNC_EN_ELDR); 961 } 962 reg = rtwn_read_2(sc, R92C_SYS_CLKR); 963 if ((reg & (R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M)) != 964 (R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M)) { 965 rtwn_write_2(sc, R92C_SYS_CLKR, 966 reg | R92C_SYS_CLKR_LOADER_EN | R92C_SYS_CLKR_ANA8M); 967 } 968 memset(&sc->rom, 0xff, sizeof(sc->rom)); 969 while (addr < 512) { 970 reg = rtwn_efuse_read_1(sc, addr); 971 if (reg == 0xff) 972 break; 973 addr++; 974 off = reg >> 4; 975 msk = reg & 0xf; 976 for (i = 0; i < 4; i++) { 977 if (msk & (1 << i)) 978 continue; 979 rom[off * 8 + i * 2 + 0] = 980 rtwn_efuse_read_1(sc, addr); 981 addr++; 982 rom[off * 8 + i * 2 + 1] = 983 rtwn_efuse_read_1(sc, addr); 984 addr++; 985 } 986 } 987#ifdef RTWN_DEBUG 988 if (sc->sc_debug >= 2) { 989 /* Dump ROM content. */ 990 printf("\n"); 991 for (i = 0; i < sizeof(sc->rom); i++) 992 printf("%02x:", rom[i]); 993 printf("\n"); 994 } 995#endif 996} 997 998static int 999rtwn_read_chipid(struct rtwn_softc *sc) 1000{ 1001 uint32_t reg; 1002 1003 reg = rtwn_read_4(sc, R92C_SYS_CFG); 1004 if (reg & R92C_SYS_CFG_TRP_VAUX_EN) 1005 /* Unsupported test chip. */ 1006 return (EIO); 1007 1008 if (reg & R92C_SYS_CFG_TYPE_92C) { 1009 sc->chip |= RTWN_CHIP_92C; 1010 /* Check if it is a castrated 8192C. */ 1011 if (MS(rtwn_read_4(sc, R92C_HPON_FSM), 1012 R92C_HPON_FSM_CHIP_BONDING_ID) == 1013 R92C_HPON_FSM_CHIP_BONDING_ID_92C_1T2R) 1014 sc->chip |= RTWN_CHIP_92C_1T2R; 1015 } 1016 if (reg & R92C_SYS_CFG_VENDOR_UMC) { 1017 sc->chip |= RTWN_CHIP_UMC; 1018 if (MS(reg, R92C_SYS_CFG_CHIP_VER_RTL) == 0) 1019 sc->chip |= RTWN_CHIP_UMC_A_CUT; 1020 } 1021 return (0); 1022} 1023 1024static void 1025rtwn_read_rom(struct rtwn_softc *sc) 1026{ 1027 struct r92c_rom *rom = &sc->rom; 1028 1029 /* Read full ROM image. */ 1030 rtwn_efuse_read(sc); 1031 1032 if (rom->id != 0x8129) 1033 device_printf(sc->sc_dev, "invalid EEPROM ID 0x%x\n", rom->id); 1034 1035 /* XXX Weird but this is what the vendor driver does. */ 1036 sc->pa_setting = rtwn_efuse_read_1(sc, 0x1fa); 1037 DPRINTF(("PA setting=0x%x\n", sc->pa_setting)); 1038 1039 sc->board_type = MS(rom->rf_opt1, R92C_ROM_RF1_BOARD_TYPE); 1040 1041 sc->regulatory = MS(rom->rf_opt1, R92C_ROM_RF1_REGULATORY); 1042 DPRINTF(("regulatory type=%d\n", sc->regulatory)); 1043 1044 IEEE80211_ADDR_COPY(sc->sc_ic.ic_macaddr, rom->macaddr); 1045} 1046 1047/* 1048 * Initialize rate adaptation in firmware. 1049 */ 1050static int 1051rtwn_ra_init(struct rtwn_softc *sc) 1052{ 1053 static const uint8_t map[] = 1054 { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 }; 1055 struct ieee80211com *ic = &sc->sc_ic; 1056 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1057 struct ieee80211_node *ni = ieee80211_ref_node(vap->iv_bss); 1058 struct ieee80211_rateset *rs = &ni->ni_rates; 1059 struct r92c_fw_cmd_macid_cfg cmd; 1060 uint32_t rates, basicrates; 1061 uint8_t mode; 1062 int maxrate, maxbasicrate, error, i, j; 1063 1064 /* Get normal and basic rates mask. */ 1065 rates = basicrates = 0; 1066 maxrate = maxbasicrate = 0; 1067 for (i = 0; i < rs->rs_nrates; i++) { 1068 /* Convert 802.11 rate to HW rate index. */ 1069 for (j = 0; j < nitems(map); j++) 1070 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == map[j]) 1071 break; 1072 if (j == nitems(map)) /* Unknown rate, skip. */ 1073 continue; 1074 rates |= 1 << j; 1075 if (j > maxrate) 1076 maxrate = j; 1077 if (rs->rs_rates[i] & IEEE80211_RATE_BASIC) { 1078 basicrates |= 1 << j; 1079 if (j > maxbasicrate) 1080 maxbasicrate = j; 1081 } 1082 } 1083 if (ic->ic_curmode == IEEE80211_MODE_11B) 1084 mode = R92C_RAID_11B; 1085 else 1086 mode = R92C_RAID_11BG; 1087 DPRINTF(("mode=0x%x rates=0x%08x, basicrates=0x%08x\n", 1088 mode, rates, basicrates)); 1089 1090 /* Set rates mask for group addressed frames. */ 1091 cmd.macid = RTWN_MACID_BC | RTWN_MACID_VALID; 1092 cmd.mask = htole32(mode << 28 | basicrates); 1093 error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd)); 1094 if (error != 0) { 1095 device_printf(sc->sc_dev, 1096 "could not add broadcast station\n"); 1097 return (error); 1098 } 1099 /* Set initial MRR rate. */ 1100 DPRINTF(("maxbasicrate=%d\n", maxbasicrate)); 1101 rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(RTWN_MACID_BC), 1102 maxbasicrate); 1103 1104 /* Set rates mask for unicast frames. */ 1105 cmd.macid = RTWN_MACID_BSS | RTWN_MACID_VALID; 1106 cmd.mask = htole32(mode << 28 | rates); 1107 error = rtwn_fw_cmd(sc, R92C_CMD_MACID_CONFIG, &cmd, sizeof(cmd)); 1108 if (error != 0) { 1109 device_printf(sc->sc_dev, "could not add BSS station\n"); 1110 return (error); 1111 } 1112 /* Set initial MRR rate. */ 1113 DPRINTF(("maxrate=%d\n", maxrate)); 1114 rtwn_write_1(sc, R92C_INIDATA_RATE_SEL(RTWN_MACID_BSS), 1115 maxrate); 1116 1117 /* Configure Automatic Rate Fallback Register. */ 1118 if (ic->ic_curmode == IEEE80211_MODE_11B) { 1119 if (rates & 0x0c) 1120 rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0d)); 1121 else 1122 rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0f)); 1123 } else 1124 rtwn_write_4(sc, R92C_ARFR(0), htole32(rates & 0x0ff5)); 1125 1126 /* Indicate highest supported rate. */ 1127 ni->ni_txrate = rs->rs_rates[rs->rs_nrates - 1]; 1128 return (0); 1129} 1130 1131static void 1132rtwn_tsf_sync_enable(struct rtwn_softc *sc) 1133{ 1134 struct ieee80211com *ic = &sc->sc_ic; 1135 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1136 struct ieee80211_node *ni = vap->iv_bss; 1137 uint64_t tsf; 1138 1139 /* Enable TSF synchronization. */ 1140 rtwn_write_1(sc, R92C_BCN_CTRL, 1141 rtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_DIS_TSF_UDT0); 1142 1143 rtwn_write_1(sc, R92C_BCN_CTRL, 1144 rtwn_read_1(sc, R92C_BCN_CTRL) & ~R92C_BCN_CTRL_EN_BCN); 1145 1146 /* Set initial TSF. */ 1147 memcpy(&tsf, ni->ni_tstamp.data, 8); 1148 tsf = le64toh(tsf); 1149 tsf = tsf - (tsf % (vap->iv_bss->ni_intval * IEEE80211_DUR_TU)); 1150 tsf -= IEEE80211_DUR_TU; 1151 rtwn_write_4(sc, R92C_TSFTR + 0, tsf); 1152 rtwn_write_4(sc, R92C_TSFTR + 4, tsf >> 32); 1153 1154 rtwn_write_1(sc, R92C_BCN_CTRL, 1155 rtwn_read_1(sc, R92C_BCN_CTRL) | R92C_BCN_CTRL_EN_BCN); 1156} 1157 1158static void 1159rtwn_set_led(struct rtwn_softc *sc, int led, int on) 1160{ 1161 uint8_t reg; 1162 1163 if (led == RTWN_LED_LINK) { 1164 reg = rtwn_read_1(sc, R92C_LEDCFG2) & 0xf0; 1165 if (!on) 1166 reg |= R92C_LEDCFG2_DIS; 1167 else 1168 reg |= R92C_LEDCFG2_EN; 1169 rtwn_write_1(sc, R92C_LEDCFG2, reg); 1170 sc->ledlink = on; /* Save LED state. */ 1171 } 1172} 1173 1174static void 1175rtwn_calib_to(void *arg) 1176{ 1177 struct rtwn_softc *sc = arg; 1178 struct r92c_fw_cmd_rssi cmd; 1179 1180 if (sc->avg_pwdb != -1) { 1181 /* Indicate Rx signal strength to FW for rate adaptation. */ 1182 memset(&cmd, 0, sizeof(cmd)); 1183 cmd.macid = 0; /* BSS. */ 1184 cmd.pwdb = sc->avg_pwdb; 1185 DPRINTFN(3, ("sending RSSI command avg=%d\n", sc->avg_pwdb)); 1186 rtwn_fw_cmd(sc, R92C_CMD_RSSI_SETTING, &cmd, sizeof(cmd)); 1187 } 1188 1189 /* Do temperature compensation. */ 1190 rtwn_temp_calib(sc); 1191 1192 callout_reset(&sc->calib_to, hz * 2, rtwn_calib_to, sc); 1193} 1194 1195static int 1196rtwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 1197{ 1198 struct rtwn_vap *rvp = RTWN_VAP(vap); 1199 struct ieee80211com *ic = vap->iv_ic; 1200 struct ieee80211_node *ni = vap->iv_bss; 1201 struct rtwn_softc *sc = ic->ic_softc; 1202 uint32_t reg; 1203 1204 IEEE80211_UNLOCK(ic); 1205 RTWN_LOCK(sc); 1206 1207 if (vap->iv_state == IEEE80211_S_RUN) { 1208 /* Stop calibration. */ 1209 callout_stop(&sc->calib_to); 1210 1211 /* Turn link LED off. */ 1212 rtwn_set_led(sc, RTWN_LED_LINK, 0); 1213 1214 /* Set media status to 'No Link'. */ 1215 reg = rtwn_read_4(sc, R92C_CR); 1216 reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_NOLINK); 1217 rtwn_write_4(sc, R92C_CR, reg); 1218 1219 /* Stop Rx of data frames. */ 1220 rtwn_write_2(sc, R92C_RXFLTMAP2, 0); 1221 1222 /* Rest TSF. */ 1223 rtwn_write_1(sc, R92C_DUAL_TSF_RST, 0x03); 1224 1225 /* Disable TSF synchronization. */ 1226 rtwn_write_1(sc, R92C_BCN_CTRL, 1227 rtwn_read_1(sc, R92C_BCN_CTRL) | 1228 R92C_BCN_CTRL_DIS_TSF_UDT0); 1229 1230 /* Reset EDCA parameters. */ 1231 rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3217); 1232 rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4317); 1233 rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x00105320); 1234 rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a444); 1235 } 1236 switch (nstate) { 1237 case IEEE80211_S_INIT: 1238 /* Turn link LED off. */ 1239 rtwn_set_led(sc, RTWN_LED_LINK, 0); 1240 break; 1241 case IEEE80211_S_SCAN: 1242 /* Make link LED blink during scan. */ 1243 rtwn_set_led(sc, RTWN_LED_LINK, !sc->ledlink); 1244 1245 /* Pause AC Tx queues. */ 1246 rtwn_write_1(sc, R92C_TXPAUSE, 1247 rtwn_read_1(sc, R92C_TXPAUSE) | 0x0f); 1248 break; 1249 case IEEE80211_S_AUTH: 1250 rtwn_set_chan(sc, ic->ic_curchan, NULL); 1251 break; 1252 case IEEE80211_S_RUN: 1253 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 1254 /* Enable Rx of data frames. */ 1255 rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff); 1256 1257 /* Turn link LED on. */ 1258 rtwn_set_led(sc, RTWN_LED_LINK, 1); 1259 break; 1260 } 1261 1262 /* Set media status to 'Associated'. */ 1263 reg = rtwn_read_4(sc, R92C_CR); 1264 reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_INFRA); 1265 rtwn_write_4(sc, R92C_CR, reg); 1266 1267 /* Set BSSID. */ 1268 rtwn_write_4(sc, R92C_BSSID + 0, LE_READ_4(&ni->ni_bssid[0])); 1269 rtwn_write_4(sc, R92C_BSSID + 4, LE_READ_2(&ni->ni_bssid[4])); 1270 1271 if (ic->ic_curmode == IEEE80211_MODE_11B) 1272 rtwn_write_1(sc, R92C_INIRTS_RATE_SEL, 0); 1273 else /* 802.11b/g */ 1274 rtwn_write_1(sc, R92C_INIRTS_RATE_SEL, 3); 1275 1276 /* Enable Rx of data frames. */ 1277 rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff); 1278 1279 /* Flush all AC queues. */ 1280 rtwn_write_1(sc, R92C_TXPAUSE, 0); 1281 1282 /* Set beacon interval. */ 1283 rtwn_write_2(sc, R92C_BCN_INTERVAL, ni->ni_intval); 1284 1285 /* Allow Rx from our BSSID only. */ 1286 rtwn_write_4(sc, R92C_RCR, 1287 rtwn_read_4(sc, R92C_RCR) | 1288 R92C_RCR_CBSSID_DATA | R92C_RCR_CBSSID_BCN); 1289 1290 /* Enable TSF synchronization. */ 1291 rtwn_tsf_sync_enable(sc); 1292 1293 rtwn_write_1(sc, R92C_SIFS_CCK + 1, 10); 1294 rtwn_write_1(sc, R92C_SIFS_OFDM + 1, 10); 1295 rtwn_write_1(sc, R92C_SPEC_SIFS + 1, 10); 1296 rtwn_write_1(sc, R92C_MAC_SPEC_SIFS + 1, 10); 1297 rtwn_write_1(sc, R92C_R2T_SIFS + 1, 10); 1298 rtwn_write_1(sc, R92C_T2T_SIFS + 1, 10); 1299 1300 /* Intialize rate adaptation. */ 1301 rtwn_ra_init(sc); 1302 /* Turn link LED on. */ 1303 rtwn_set_led(sc, RTWN_LED_LINK, 1); 1304 1305 sc->avg_pwdb = -1; /* Reset average RSSI. */ 1306 /* Reset temperature calibration state machine. */ 1307 sc->thcal_state = 0; 1308 sc->thcal_lctemp = 0; 1309 /* Start periodic calibration. */ 1310 callout_reset(&sc->calib_to, hz * 2, rtwn_calib_to, sc); 1311 break; 1312 default: 1313 break; 1314 } 1315 RTWN_UNLOCK(sc); 1316 IEEE80211_LOCK(ic); 1317 return (rvp->newstate(vap, nstate, arg)); 1318} 1319 1320static int 1321rtwn_updateedca(struct ieee80211com *ic) 1322{ 1323 struct rtwn_softc *sc = ic->ic_softc; 1324 const uint16_t aci2reg[WME_NUM_AC] = { 1325 R92C_EDCA_BE_PARAM, 1326 R92C_EDCA_BK_PARAM, 1327 R92C_EDCA_VI_PARAM, 1328 R92C_EDCA_VO_PARAM 1329 }; 1330 int aci, aifs, slottime; 1331 1332 IEEE80211_LOCK(ic); 1333 slottime = (ic->ic_flags & IEEE80211_F_SHSLOT) ? 9 : 20; 1334 for (aci = 0; aci < WME_NUM_AC; aci++) { 1335 const struct wmeParams *ac = 1336 &ic->ic_wme.wme_chanParams.cap_wmeParams[aci]; 1337 /* AIFS[AC] = AIFSN[AC] * aSlotTime + aSIFSTime. */ 1338 aifs = ac->wmep_aifsn * slottime + 10; 1339 rtwn_write_4(sc, aci2reg[aci], 1340 SM(R92C_EDCA_PARAM_TXOP, ac->wmep_txopLimit) | 1341 SM(R92C_EDCA_PARAM_ECWMIN, ac->wmep_logcwmin) | 1342 SM(R92C_EDCA_PARAM_ECWMAX, ac->wmep_logcwmax) | 1343 SM(R92C_EDCA_PARAM_AIFS, aifs)); 1344 } 1345 IEEE80211_UNLOCK(ic); 1346 return (0); 1347} 1348 1349static void 1350rtwn_update_avgrssi(struct rtwn_softc *sc, int rate, int8_t rssi) 1351{ 1352 int pwdb; 1353 1354 /* Convert antenna signal to percentage. */ 1355 if (rssi <= -100 || rssi >= 20) 1356 pwdb = 0; 1357 else if (rssi >= 0) 1358 pwdb = 100; 1359 else 1360 pwdb = 100 + rssi; 1361 if (rate <= 3) { 1362 /* CCK gain is smaller than OFDM/MCS gain. */ 1363 pwdb += 6; 1364 if (pwdb > 100) 1365 pwdb = 100; 1366 if (pwdb <= 14) 1367 pwdb -= 4; 1368 else if (pwdb <= 26) 1369 pwdb -= 8; 1370 else if (pwdb <= 34) 1371 pwdb -= 6; 1372 else if (pwdb <= 42) 1373 pwdb -= 2; 1374 } 1375 if (sc->avg_pwdb == -1) /* Init. */ 1376 sc->avg_pwdb = pwdb; 1377 else if (sc->avg_pwdb < pwdb) 1378 sc->avg_pwdb = ((sc->avg_pwdb * 19 + pwdb) / 20) + 1; 1379 else 1380 sc->avg_pwdb = ((sc->avg_pwdb * 19 + pwdb) / 20); 1381 DPRINTFN(4, ("PWDB=%d EMA=%d\n", pwdb, sc->avg_pwdb)); 1382} 1383 1384static int8_t 1385rtwn_get_rssi(struct rtwn_softc *sc, int rate, void *physt) 1386{ 1387 static const int8_t cckoff[] = { 16, -12, -26, -46 }; 1388 struct r92c_rx_phystat *phy; 1389 struct r92c_rx_cck *cck; 1390 uint8_t rpt; 1391 int8_t rssi; 1392 1393 if (rate <= 3) { 1394 cck = (struct r92c_rx_cck *)physt; 1395 if (sc->sc_flags & RTWN_FLAG_CCK_HIPWR) { 1396 rpt = (cck->agc_rpt >> 5) & 0x3; 1397 rssi = (cck->agc_rpt & 0x1f) << 1; 1398 } else { 1399 rpt = (cck->agc_rpt >> 6) & 0x3; 1400 rssi = cck->agc_rpt & 0x3e; 1401 } 1402 rssi = cckoff[rpt] - rssi; 1403 } else { /* OFDM/HT. */ 1404 phy = (struct r92c_rx_phystat *)physt; 1405 rssi = ((le32toh(phy->phydw1) >> 1) & 0x7f) - 110; 1406 } 1407 return (rssi); 1408} 1409 1410static void 1411rtwn_rx_frame(struct rtwn_softc *sc, struct r92c_rx_desc *rx_desc, 1412 struct rtwn_rx_data *rx_data, int desc_idx) 1413{ 1414 struct ieee80211com *ic = &sc->sc_ic; 1415 struct ieee80211_frame_min *wh; 1416 struct ieee80211_node *ni; 1417 struct r92c_rx_phystat *phy = NULL; 1418 uint32_t rxdw0, rxdw3; 1419 struct mbuf *m, *m1; 1420 bus_dma_segment_t segs[1]; 1421 bus_addr_t physaddr; 1422 uint8_t rate; 1423 int8_t rssi = 0, nf; 1424 int infosz, nsegs, pktlen, shift, error; 1425 1426 rxdw0 = le32toh(rx_desc->rxdw0); 1427 rxdw3 = le32toh(rx_desc->rxdw3); 1428 1429 if (__predict_false(rxdw0 & (R92C_RXDW0_CRCERR | R92C_RXDW0_ICVERR))) { 1430 /* 1431 * This should not happen since we setup our Rx filter 1432 * to not receive these frames. 1433 */ 1434 counter_u64_add(ic->ic_ierrors, 1); 1435 return; 1436 } 1437 1438 pktlen = MS(rxdw0, R92C_RXDW0_PKTLEN); 1439 if (__predict_false(pktlen < sizeof(struct ieee80211_frame_ack) || 1440 pktlen > MCLBYTES)) { 1441 counter_u64_add(ic->ic_ierrors, 1); 1442 return; 1443 } 1444 1445 rate = MS(rxdw3, R92C_RXDW3_RATE); 1446 infosz = MS(rxdw0, R92C_RXDW0_INFOSZ) * 8; 1447 if (infosz > sizeof(struct r92c_rx_phystat)) 1448 infosz = sizeof(struct r92c_rx_phystat); 1449 shift = MS(rxdw0, R92C_RXDW0_SHIFT); 1450 1451 /* Get RSSI from PHY status descriptor if present. */ 1452 if (infosz != 0 && (rxdw0 & R92C_RXDW0_PHYST)) { 1453 phy = mtod(rx_data->m, struct r92c_rx_phystat *); 1454 rssi = rtwn_get_rssi(sc, rate, phy); 1455 /* Update our average RSSI. */ 1456 rtwn_update_avgrssi(sc, rate, rssi); 1457 } 1458 1459 DPRINTFN(5, ("Rx frame len=%d rate=%d infosz=%d shift=%d rssi=%d\n", 1460 pktlen, rate, infosz, shift, rssi)); 1461 1462 m1 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1463 if (m1 == NULL) { 1464 counter_u64_add(ic->ic_ierrors, 1); 1465 return; 1466 } 1467 bus_dmamap_unload(sc->rx_ring.data_dmat, rx_data->map); 1468 1469 error = bus_dmamap_load(sc->rx_ring.data_dmat, rx_data->map, 1470 mtod(m1, void *), MCLBYTES, rtwn_dma_map_addr, 1471 &physaddr, 0); 1472 if (error != 0) { 1473 m_freem(m1); 1474 1475 if (bus_dmamap_load_mbuf_sg(sc->rx_ring.data_dmat, 1476 rx_data->map, rx_data->m, segs, &nsegs, 0)) 1477 panic("%s: could not load old RX mbuf", 1478 device_get_name(sc->sc_dev)); 1479 1480 /* Physical address may have changed. */ 1481 rtwn_setup_rx_desc(sc, rx_desc, physaddr, MCLBYTES, desc_idx); 1482 counter_u64_add(ic->ic_ierrors, 1); 1483 return; 1484 } 1485 1486 /* Finalize mbuf. */ 1487 m = rx_data->m; 1488 rx_data->m = m1; 1489 m->m_pkthdr.len = m->m_len = pktlen + infosz + shift; 1490 1491 /* Update RX descriptor. */ 1492 rtwn_setup_rx_desc(sc, rx_desc, physaddr, MCLBYTES, desc_idx); 1493 1494 /* Get ieee80211 frame header. */ 1495 if (rxdw0 & R92C_RXDW0_PHYST) 1496 m_adj(m, infosz + shift); 1497 else 1498 m_adj(m, shift); 1499 1500 nf = -95; 1501 if (ieee80211_radiotap_active(ic)) { 1502 struct rtwn_rx_radiotap_header *tap = &sc->sc_rxtap; 1503 1504 tap->wr_flags = 0; 1505 if (!(rxdw3 & R92C_RXDW3_HT)) { 1506 switch (rate) { 1507 /* CCK. */ 1508 case 0: tap->wr_rate = 2; break; 1509 case 1: tap->wr_rate = 4; break; 1510 case 2: tap->wr_rate = 11; break; 1511 case 3: tap->wr_rate = 22; break; 1512 /* OFDM. */ 1513 case 4: tap->wr_rate = 12; break; 1514 case 5: tap->wr_rate = 18; break; 1515 case 6: tap->wr_rate = 24; break; 1516 case 7: tap->wr_rate = 36; break; 1517 case 8: tap->wr_rate = 48; break; 1518 case 9: tap->wr_rate = 72; break; 1519 case 10: tap->wr_rate = 96; break; 1520 case 11: tap->wr_rate = 108; break; 1521 } 1522 } else if (rate >= 12) { /* MCS0~15. */ 1523 /* Bit 7 set means HT MCS instead of rate. */ 1524 tap->wr_rate = 0x80 | (rate - 12); 1525 } 1526 tap->wr_dbm_antsignal = rssi; 1527 tap->wr_chan_freq = htole16(ic->ic_curchan->ic_freq); 1528 tap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags); 1529 } 1530 1531 RTWN_UNLOCK(sc); 1532 wh = mtod(m, struct ieee80211_frame_min *); 1533 if (m->m_len >= sizeof(*wh)) 1534 ni = ieee80211_find_rxnode(ic, wh); 1535 else 1536 ni = NULL; 1537 1538 /* Send the frame to the 802.11 layer. */ 1539 if (ni != NULL) { 1540 (void)ieee80211_input(ni, m, rssi - nf, nf); 1541 /* Node is no longer needed. */ 1542 ieee80211_free_node(ni); 1543 } else 1544 (void)ieee80211_input_all(ic, m, rssi - nf, nf); 1545 1546 RTWN_LOCK(sc); 1547} 1548 1549static int 1550rtwn_tx(struct rtwn_softc *sc, struct mbuf *m, struct ieee80211_node *ni) 1551{ 1552 struct ieee80211com *ic = &sc->sc_ic; 1553 struct ieee80211vap *vap = ni->ni_vap; 1554 struct ieee80211_frame *wh; 1555 struct ieee80211_key *k = NULL; 1556 struct rtwn_tx_ring *tx_ring; 1557 struct rtwn_tx_data *data; 1558 struct r92c_tx_desc *txd; 1559 bus_dma_segment_t segs[1]; 1560 uint16_t qos; 1561 uint8_t raid, type, tid, qid; 1562 int nsegs, error; 1563 1564 wh = mtod(m, struct ieee80211_frame *); 1565 type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK; 1566 1567 /* Encrypt the frame if need be. */ 1568 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1569 k = ieee80211_crypto_encap(ni, m); 1570 if (k == NULL) { 1571 m_freem(m); 1572 return (ENOBUFS); 1573 } 1574 /* 802.11 header may have moved. */ 1575 wh = mtod(m, struct ieee80211_frame *); 1576 } 1577 1578 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1579 qos = ((const struct ieee80211_qosframe *)wh)->i_qos[0]; 1580 tid = qos & IEEE80211_QOS_TID; 1581 } else { 1582 qos = 0; 1583 tid = 0; 1584 } 1585 1586 switch (type) { 1587 case IEEE80211_FC0_TYPE_CTL: 1588 case IEEE80211_FC0_TYPE_MGT: 1589 qid = RTWN_VO_QUEUE; 1590 break; 1591 default: 1592 qid = M_WME_GETAC(m); 1593 break; 1594 } 1595 1596 /* Grab a Tx buffer from the ring. */ 1597 tx_ring = &sc->tx_ring[qid]; 1598 data = &tx_ring->tx_data[tx_ring->cur]; 1599 if (data->m != NULL) { 1600 m_freem(m); 1601 return (ENOBUFS); 1602 } 1603 1604 /* Fill Tx descriptor. */ 1605 txd = &tx_ring->desc[tx_ring->cur]; 1606 if (htole32(txd->txdw0) & R92C_RXDW0_OWN) { 1607 m_freem(m); 1608 return (ENOBUFS); 1609 } 1610 txd->txdw0 = htole32( 1611 SM(R92C_TXDW0_PKTLEN, m->m_pkthdr.len) | 1612 SM(R92C_TXDW0_OFFSET, sizeof(*txd)) | 1613 R92C_TXDW0_FSG | R92C_TXDW0_LSG); 1614 if (IEEE80211_IS_MULTICAST(wh->i_addr1)) 1615 txd->txdw0 |= htole32(R92C_TXDW0_BMCAST); 1616 1617 txd->txdw1 = 0; 1618 txd->txdw4 = 0; 1619 txd->txdw5 = 0; 1620 1621 /* XXX TODO: rate control; implement low-rate for EAPOL */ 1622 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 1623 type == IEEE80211_FC0_TYPE_DATA) { 1624 if (ic->ic_curmode == IEEE80211_MODE_11B) 1625 raid = R92C_RAID_11B; 1626 else 1627 raid = R92C_RAID_11BG; 1628 txd->txdw1 |= htole32( 1629 SM(R92C_TXDW1_MACID, RTWN_MACID_BSS) | 1630 SM(R92C_TXDW1_QSEL, R92C_TXDW1_QSEL_BE) | 1631 SM(R92C_TXDW1_RAID, raid) | 1632 R92C_TXDW1_AGGBK); 1633 1634 if (ic->ic_flags & IEEE80211_F_USEPROT) { 1635 if (ic->ic_protmode == IEEE80211_PROT_CTSONLY) { 1636 txd->txdw4 |= htole32(R92C_TXDW4_CTS2SELF | 1637 R92C_TXDW4_HWRTSEN); 1638 } else if (ic->ic_protmode == IEEE80211_PROT_RTSCTS) { 1639 txd->txdw4 |= htole32(R92C_TXDW4_RTSEN | 1640 R92C_TXDW4_HWRTSEN); 1641 } 1642 } 1643 1644 /* XXX TODO: implement rate control */ 1645 1646 /* Send RTS at OFDM24. */ 1647 txd->txdw4 |= htole32(SM(R92C_TXDW4_RTSRATE, 8)); 1648 txd->txdw5 |= htole32(SM(R92C_TXDW5_RTSRATE_FBLIMIT, 0xf)); 1649 /* Send data at OFDM54. */ 1650 txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE, 11)); 1651 txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE_FBLIMIT, 0x1f)); 1652 1653 } else { 1654 txd->txdw1 |= htole32( 1655 SM(R92C_TXDW1_MACID, 0) | 1656 SM(R92C_TXDW1_QSEL, R92C_TXDW1_QSEL_MGNT) | 1657 SM(R92C_TXDW1_RAID, R92C_RAID_11B)); 1658 1659 /* Force CCK1. */ 1660 txd->txdw4 |= htole32(R92C_TXDW4_DRVRATE); 1661 txd->txdw5 |= htole32(SM(R92C_TXDW5_DATARATE, 0)); 1662 } 1663 /* Set sequence number (already little endian). */ 1664 txd->txdseq = htole16(M_SEQNO_GET(m) % IEEE80211_SEQ_RANGE); 1665 1666 if (!qos) { 1667 /* Use HW sequence numbering for non-QoS frames. */ 1668 txd->txdw4 |= htole32(R92C_TXDW4_HWSEQ); 1669 txd->txdseq |= htole16(0x8000); 1670 } else 1671 txd->txdw4 |= htole32(R92C_TXDW4_QOS); 1672 1673 error = bus_dmamap_load_mbuf_sg(tx_ring->data_dmat, data->map, m, segs, 1674 &nsegs, BUS_DMA_NOWAIT); 1675 if (error != 0 && error != EFBIG) { 1676 device_printf(sc->sc_dev, "can't map mbuf (error %d)\n", error); 1677 m_freem(m); 1678 return (error); 1679 } 1680 if (error != 0) { 1681 struct mbuf *mnew; 1682 1683 mnew = m_defrag(m, M_NOWAIT); 1684 if (mnew == NULL) { 1685 device_printf(sc->sc_dev, 1686 "can't defragment mbuf\n"); 1687 m_freem(m); 1688 return (ENOBUFS); 1689 } 1690 m = mnew; 1691 1692 error = bus_dmamap_load_mbuf_sg(tx_ring->data_dmat, data->map, 1693 m, segs, &nsegs, BUS_DMA_NOWAIT); 1694 if (error != 0) { 1695 device_printf(sc->sc_dev, 1696 "can't map mbuf (error %d)\n", error); 1697 m_freem(m); 1698 return (error); 1699 } 1700 } 1701 1702 txd->txbufaddr = htole32(segs[0].ds_addr); 1703 txd->txbufsize = htole16(m->m_pkthdr.len); 1704 bus_space_barrier(sc->sc_st, sc->sc_sh, 0, sc->sc_mapsize, 1705 BUS_SPACE_BARRIER_WRITE); 1706 txd->txdw0 |= htole32(R92C_TXDW0_OWN); 1707 1708 bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map, 1709 BUS_DMASYNC_POSTWRITE); 1710 bus_dmamap_sync(tx_ring->data_dmat, data->map, BUS_DMASYNC_POSTWRITE); 1711 1712 data->m = m; 1713 data->ni = ni; 1714 1715 if (ieee80211_radiotap_active_vap(vap)) { 1716 struct rtwn_tx_radiotap_header *tap = &sc->sc_txtap; 1717 1718 tap->wt_flags = 0; 1719 tap->wt_chan_freq = htole16(ic->ic_curchan->ic_freq); 1720 tap->wt_chan_flags = htole16(ic->ic_curchan->ic_flags); 1721 1722 ieee80211_radiotap_tx(vap, m); 1723 } 1724 1725 tx_ring->cur = (tx_ring->cur + 1) % RTWN_TX_LIST_COUNT; 1726 tx_ring->queued++; 1727 1728 if (tx_ring->queued >= (RTWN_TX_LIST_COUNT - 1)) 1729 sc->qfullmsk |= (1 << qid); 1730 1731 /* Kick TX. */ 1732 rtwn_write_2(sc, R92C_PCIE_CTRL_REG, (1 << qid)); 1733 return (0); 1734} 1735 1736static void 1737rtwn_tx_done(struct rtwn_softc *sc, int qid) 1738{ 1739 struct rtwn_tx_ring *tx_ring = &sc->tx_ring[qid]; 1740 struct rtwn_tx_data *tx_data; 1741 struct r92c_tx_desc *tx_desc; 1742 int i; 1743 1744 bus_dmamap_sync(tx_ring->desc_dmat, tx_ring->desc_map, 1745 BUS_DMASYNC_POSTREAD); 1746 1747 for (i = 0; i < RTWN_TX_LIST_COUNT; i++) { 1748 tx_data = &tx_ring->tx_data[i]; 1749 if (tx_data->m == NULL) 1750 continue; 1751 1752 tx_desc = &tx_ring->desc[i]; 1753 if (le32toh(tx_desc->txdw0) & R92C_TXDW0_OWN) 1754 continue; 1755 1756 bus_dmamap_unload(tx_ring->desc_dmat, tx_ring->desc_map); 1757 1758 /* 1759 * XXX TODO: figure out whether the transmit succeeded or not. 1760 * .. and then notify rate control. 1761 */ 1762 ieee80211_tx_complete(tx_data->ni, tx_data->m, 0); 1763 tx_data->ni = NULL; 1764 tx_data->m = NULL; 1765 1766 sc->sc_tx_timer = 0; 1767 tx_ring->queued--; 1768 } 1769 1770 if (tx_ring->queued < (RTWN_TX_LIST_COUNT - 1)) 1771 sc->qfullmsk &= ~(1 << qid); 1772 rtwn_start(sc); 1773} 1774 1775static int 1776rtwn_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1777 const struct ieee80211_bpf_params *params) 1778{ 1779 struct ieee80211com *ic = ni->ni_ic; 1780 struct rtwn_softc *sc = ic->ic_softc; 1781 1782 RTWN_LOCK(sc); 1783 1784 /* Prevent management frames from being sent if we're not ready. */ 1785 if (!(sc->sc_flags & RTWN_RUNNING)) { 1786 RTWN_UNLOCK(sc); 1787 m_freem(m); 1788 return (ENETDOWN); 1789 } 1790 1791 if (rtwn_tx(sc, m, ni) != 0) { 1792 m_freem(m); 1793 RTWN_UNLOCK(sc); 1794 return (EIO); 1795 } 1796 sc->sc_tx_timer = 5; 1797 RTWN_UNLOCK(sc); 1798 return (0); 1799} 1800 1801static int 1802rtwn_transmit(struct ieee80211com *ic, struct mbuf *m) 1803{ 1804 struct rtwn_softc *sc = ic->ic_softc; 1805 int error; 1806 1807 RTWN_LOCK(sc); 1808 if ((sc->sc_flags & RTWN_RUNNING) == 0) { 1809 RTWN_UNLOCK(sc); 1810 return (ENXIO); 1811 } 1812 error = mbufq_enqueue(&sc->sc_snd, m); 1813 if (error) { 1814 RTWN_UNLOCK(sc); 1815 return (error); 1816 } 1817 rtwn_start(sc); 1818 RTWN_UNLOCK(sc); 1819 return (0); 1820} 1821 1822static void 1823rtwn_parent(struct ieee80211com *ic) 1824{ 1825 struct rtwn_softc *sc = ic->ic_softc; 1826 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1827 1828 if (ic->ic_nrunning > 0) { 1829 if (rtwn_init(sc) == 0) 1830 ieee80211_start_all(ic); 1831 else 1832 ieee80211_stop(vap); 1833 } else 1834 rtwn_stop(sc); 1835} 1836 1837static void 1838rtwn_start(struct rtwn_softc *sc) 1839{ 1840 struct ieee80211_node *ni; 1841 struct mbuf *m; 1842 1843 RTWN_LOCK_ASSERT(sc); 1844 1845 if ((sc->sc_flags & RTWN_RUNNING) == 0) 1846 return; 1847 1848 while (sc->qfullmsk == 0 && (m = mbufq_dequeue(&sc->sc_snd)) != NULL) { 1849 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif; 1850 if (rtwn_tx(sc, m, ni) != 0) { 1851 if_inc_counter(ni->ni_vap->iv_ifp, 1852 IFCOUNTER_OERRORS, 1); 1853 ieee80211_free_node(ni); 1854 continue; 1855 } 1856 sc->sc_tx_timer = 5; 1857 } 1858} 1859 1860static void 1861rtwn_watchdog(void *arg) 1862{ 1863 struct rtwn_softc *sc = arg; 1864 struct ieee80211com *ic = &sc->sc_ic; 1865 1866 RTWN_LOCK_ASSERT(sc); 1867 1868 KASSERT(sc->sc_flags & RTWN_RUNNING, ("not running")); 1869 1870 if (sc->sc_tx_timer != 0 && --sc->sc_tx_timer == 0) { 1871 ic_printf(ic, "device timeout\n"); 1872 ieee80211_restart_all(ic); 1873 return; 1874 } 1875 callout_reset(&sc->watchdog_to, hz, rtwn_watchdog, sc); 1876} 1877 1878static int 1879rtwn_power_on(struct rtwn_softc *sc) 1880{ 1881 uint32_t reg; 1882 int ntries; 1883 1884 /* Wait for autoload done bit. */ 1885 for (ntries = 0; ntries < 1000; ntries++) { 1886 if (rtwn_read_1(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_PFM_ALDN) 1887 break; 1888 DELAY(5); 1889 } 1890 if (ntries == 1000) { 1891 device_printf(sc->sc_dev, 1892 "timeout waiting for chip autoload\n"); 1893 return (ETIMEDOUT); 1894 } 1895 1896 /* Unlock ISO/CLK/Power control register. */ 1897 rtwn_write_1(sc, R92C_RSV_CTRL, 0); 1898 1899 /* TODO: check if we need this for 8188CE */ 1900 if (sc->board_type != R92C_BOARD_TYPE_DONGLE) { 1901 /* bt coex */ 1902 reg = rtwn_read_4(sc, R92C_APS_FSMCO); 1903 reg |= (R92C_APS_FSMCO_SOP_ABG | 1904 R92C_APS_FSMCO_SOP_AMB | 1905 R92C_APS_FSMCO_XOP_BTCK); 1906 rtwn_write_4(sc, R92C_APS_FSMCO, reg); 1907 } 1908 1909 /* Move SPS into PWM mode. */ 1910 rtwn_write_1(sc, R92C_SPS0_CTRL, 0x2b); 1911 1912 /* Set low byte to 0x0f, leave others unchanged. */ 1913 rtwn_write_4(sc, R92C_AFE_XTAL_CTRL, 1914 (rtwn_read_4(sc, R92C_AFE_XTAL_CTRL) & 0xffffff00) | 0x0f); 1915 1916 /* TODO: check if we need this for 8188CE */ 1917 if (sc->board_type != R92C_BOARD_TYPE_DONGLE) { 1918 /* bt coex */ 1919 reg = rtwn_read_4(sc, R92C_AFE_XTAL_CTRL); 1920 reg &= (~0x00024800); /* XXX magic from linux */ 1921 rtwn_write_4(sc, R92C_AFE_XTAL_CTRL, reg); 1922 } 1923 1924 rtwn_write_2(sc, R92C_SYS_ISO_CTRL, 1925 (rtwn_read_2(sc, R92C_SYS_ISO_CTRL) & 0xff) | 1926 R92C_SYS_ISO_CTRL_PWC_EV12V | R92C_SYS_ISO_CTRL_DIOR); 1927 DELAY(200); 1928 1929 /* TODO: linux does additional btcoex stuff here */ 1930 1931 /* Auto enable WLAN. */ 1932 rtwn_write_2(sc, R92C_APS_FSMCO, 1933 rtwn_read_2(sc, R92C_APS_FSMCO) | R92C_APS_FSMCO_APFM_ONMAC); 1934 for (ntries = 0; ntries < 1000; ntries++) { 1935 if (!(rtwn_read_2(sc, R92C_APS_FSMCO) & 1936 R92C_APS_FSMCO_APFM_ONMAC)) 1937 break; 1938 DELAY(5); 1939 } 1940 if (ntries == 1000) { 1941 device_printf(sc->sc_dev, "timeout waiting for MAC auto ON\n"); 1942 return (ETIMEDOUT); 1943 } 1944 1945 /* Enable radio, GPIO and LED functions. */ 1946 rtwn_write_2(sc, R92C_APS_FSMCO, 1947 R92C_APS_FSMCO_AFSM_PCIE | 1948 R92C_APS_FSMCO_PDN_EN | 1949 R92C_APS_FSMCO_PFM_ALDN); 1950 /* Release RF digital isolation. */ 1951 rtwn_write_2(sc, R92C_SYS_ISO_CTRL, 1952 rtwn_read_2(sc, R92C_SYS_ISO_CTRL) & ~R92C_SYS_ISO_CTRL_DIOR); 1953 1954 if (sc->chip & RTWN_CHIP_92C) 1955 rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x77); 1956 else 1957 rtwn_write_1(sc, R92C_PCIE_CTRL_REG + 3, 0x22); 1958 1959 rtwn_write_4(sc, R92C_INT_MIG, 0); 1960 1961 if (sc->board_type != R92C_BOARD_TYPE_DONGLE) { 1962 /* bt coex */ 1963 reg = rtwn_read_4(sc, R92C_AFE_XTAL_CTRL + 2); 1964 reg &= 0xfd; /* XXX magic from linux */ 1965 rtwn_write_4(sc, R92C_AFE_XTAL_CTRL + 2, reg); 1966 } 1967 1968 rtwn_write_1(sc, R92C_GPIO_MUXCFG, 1969 rtwn_read_1(sc, R92C_GPIO_MUXCFG) & ~R92C_GPIO_MUXCFG_RFKILL); 1970 1971 reg = rtwn_read_1(sc, R92C_GPIO_IO_SEL); 1972 if (!(reg & R92C_GPIO_IO_SEL_RFKILL)) { 1973 device_printf(sc->sc_dev, 1974 "radio is disabled by hardware switch\n"); 1975 return (EPERM); 1976 } 1977 1978 /* Initialize MAC. */ 1979 reg = rtwn_read_1(sc, R92C_APSD_CTRL); 1980 rtwn_write_1(sc, R92C_APSD_CTRL, 1981 rtwn_read_1(sc, R92C_APSD_CTRL) & ~R92C_APSD_CTRL_OFF); 1982 for (ntries = 0; ntries < 200; ntries++) { 1983 if (!(rtwn_read_1(sc, R92C_APSD_CTRL) & 1984 R92C_APSD_CTRL_OFF_STATUS)) 1985 break; 1986 DELAY(500); 1987 } 1988 if (ntries == 200) { 1989 device_printf(sc->sc_dev, 1990 "timeout waiting for MAC initialization\n"); 1991 return (ETIMEDOUT); 1992 } 1993 1994 /* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */ 1995 reg = rtwn_read_2(sc, R92C_CR); 1996 reg |= R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | 1997 R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN | 1998 R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN | 1999 R92C_CR_ENSEC; 2000 rtwn_write_2(sc, R92C_CR, reg); 2001 2002 rtwn_write_1(sc, 0xfe10, 0x19); 2003 2004 return (0); 2005} 2006 2007static int 2008rtwn_llt_init(struct rtwn_softc *sc) 2009{ 2010 int i, error; 2011 2012 /* Reserve pages [0; R92C_TX_PAGE_COUNT]. */ 2013 for (i = 0; i < R92C_TX_PAGE_COUNT; i++) { 2014 if ((error = rtwn_llt_write(sc, i, i + 1)) != 0) 2015 return (error); 2016 } 2017 /* NB: 0xff indicates end-of-list. */ 2018 if ((error = rtwn_llt_write(sc, i, 0xff)) != 0) 2019 return (error); 2020 /* 2021 * Use pages [R92C_TX_PAGE_COUNT + 1; R92C_TXPKTBUF_COUNT - 1] 2022 * as ring buffer. 2023 */ 2024 for (++i; i < R92C_TXPKTBUF_COUNT - 1; i++) { 2025 if ((error = rtwn_llt_write(sc, i, i + 1)) != 0) 2026 return (error); 2027 } 2028 /* Make the last page point to the beginning of the ring buffer. */ 2029 error = rtwn_llt_write(sc, i, R92C_TX_PAGE_COUNT + 1); 2030 return (error); 2031} 2032 2033static void 2034rtwn_fw_reset(struct rtwn_softc *sc) 2035{ 2036 uint16_t reg; 2037 int ntries; 2038 2039 /* Tell 8051 to reset itself. */ 2040 rtwn_write_1(sc, R92C_HMETFR + 3, 0x20); 2041 2042 /* Wait until 8051 resets by itself. */ 2043 for (ntries = 0; ntries < 100; ntries++) { 2044 reg = rtwn_read_2(sc, R92C_SYS_FUNC_EN); 2045 if (!(reg & R92C_SYS_FUNC_EN_CPUEN)) 2046 goto sleep; 2047 DELAY(50); 2048 } 2049 /* Force 8051 reset. */ 2050 rtwn_write_2(sc, R92C_SYS_FUNC_EN, reg & ~R92C_SYS_FUNC_EN_CPUEN); 2051sleep: 2052 /* 2053 * We must sleep for one second to let the firmware settle. 2054 * Accessing registers too early will hang the whole system. 2055 */ 2056 if (msleep(®, &sc->sc_mtx, 0, "rtwnrst", hz)) { 2057 device_printf(sc->sc_dev, "timeout waiting for firmware " 2058 "initialization to complete\n"); 2059 } 2060} 2061 2062static void 2063rtwn_fw_loadpage(struct rtwn_softc *sc, int page, const uint8_t *buf, int len) 2064{ 2065 uint32_t reg; 2066 int off, mlen, i; 2067 2068 reg = rtwn_read_4(sc, R92C_MCUFWDL); 2069 reg = RW(reg, R92C_MCUFWDL_PAGE, page); 2070 rtwn_write_4(sc, R92C_MCUFWDL, reg); 2071 2072 DELAY(5); 2073 2074 off = R92C_FW_START_ADDR; 2075 while (len > 0) { 2076 if (len > 196) 2077 mlen = 196; 2078 else if (len > 4) 2079 mlen = 4; 2080 else 2081 mlen = 1; 2082 for (i = 0; i < mlen; i++) 2083 rtwn_write_1(sc, off++, buf[i]); 2084 buf += mlen; 2085 len -= mlen; 2086 } 2087} 2088 2089static int 2090rtwn_load_firmware(struct rtwn_softc *sc) 2091{ 2092 const struct firmware *fw; 2093 const struct r92c_fw_hdr *hdr; 2094 const char *name; 2095 const u_char *ptr; 2096 size_t len; 2097 uint32_t reg; 2098 int mlen, ntries, page, error = 0; 2099 2100 /* Read firmware image from the filesystem. */ 2101 if ((sc->chip & (RTWN_CHIP_UMC_A_CUT | RTWN_CHIP_92C)) == 2102 RTWN_CHIP_UMC_A_CUT) 2103 name = "rtwn-rtl8192cfwU"; 2104 else 2105 name = "rtwn-rtl8192cfwU_B"; 2106 RTWN_UNLOCK(sc); 2107 fw = firmware_get(name); 2108 RTWN_LOCK(sc); 2109 if (fw == NULL) { 2110 device_printf(sc->sc_dev, 2111 "could not read firmware %s\n", name); 2112 return (ENOENT); 2113 } 2114 len = fw->datasize; 2115 if (len < sizeof(*hdr)) { 2116 device_printf(sc->sc_dev, "firmware too short\n"); 2117 error = EINVAL; 2118 goto fail; 2119 } 2120 ptr = fw->data; 2121 hdr = (const struct r92c_fw_hdr *)ptr; 2122 /* Check if there is a valid FW header and skip it. */ 2123 if ((le16toh(hdr->signature) >> 4) == 0x88c || 2124 (le16toh(hdr->signature) >> 4) == 0x92c) { 2125 DPRINTF(("FW V%d.%d %02d-%02d %02d:%02d\n", 2126 le16toh(hdr->version), le16toh(hdr->subversion), 2127 hdr->month, hdr->date, hdr->hour, hdr->minute)); 2128 ptr += sizeof(*hdr); 2129 len -= sizeof(*hdr); 2130 } 2131 2132 if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL) 2133 rtwn_fw_reset(sc); 2134 2135 /* Enable FW download. */ 2136 rtwn_write_2(sc, R92C_SYS_FUNC_EN, 2137 rtwn_read_2(sc, R92C_SYS_FUNC_EN) | 2138 R92C_SYS_FUNC_EN_CPUEN); 2139 rtwn_write_1(sc, R92C_MCUFWDL, 2140 rtwn_read_1(sc, R92C_MCUFWDL) | R92C_MCUFWDL_EN); 2141 rtwn_write_1(sc, R92C_MCUFWDL + 2, 2142 rtwn_read_1(sc, R92C_MCUFWDL + 2) & ~0x08); 2143 2144 /* Reset the FWDL checksum. */ 2145 rtwn_write_1(sc, R92C_MCUFWDL, 2146 rtwn_read_1(sc, R92C_MCUFWDL) | R92C_MCUFWDL_CHKSUM_RPT); 2147 2148 for (page = 0; len > 0; page++) { 2149 mlen = MIN(len, R92C_FW_PAGE_SIZE); 2150 rtwn_fw_loadpage(sc, page, ptr, mlen); 2151 ptr += mlen; 2152 len -= mlen; 2153 } 2154 2155 /* Disable FW download. */ 2156 rtwn_write_1(sc, R92C_MCUFWDL, 2157 rtwn_read_1(sc, R92C_MCUFWDL) & ~R92C_MCUFWDL_EN); 2158 rtwn_write_1(sc, R92C_MCUFWDL + 1, 0); 2159 2160 /* Wait for checksum report. */ 2161 for (ntries = 0; ntries < 1000; ntries++) { 2162 if (rtwn_read_4(sc, R92C_MCUFWDL) & R92C_MCUFWDL_CHKSUM_RPT) 2163 break; 2164 DELAY(5); 2165 } 2166 if (ntries == 1000) { 2167 device_printf(sc->sc_dev, 2168 "timeout waiting for checksum report\n"); 2169 error = ETIMEDOUT; 2170 goto fail; 2171 } 2172 2173 reg = rtwn_read_4(sc, R92C_MCUFWDL); 2174 reg = (reg & ~R92C_MCUFWDL_WINTINI_RDY) | R92C_MCUFWDL_RDY; 2175 rtwn_write_4(sc, R92C_MCUFWDL, reg); 2176 /* Wait for firmware readiness. */ 2177 for (ntries = 0; ntries < 2000; ntries++) { 2178 if (rtwn_read_4(sc, R92C_MCUFWDL) & R92C_MCUFWDL_WINTINI_RDY) 2179 break; 2180 DELAY(50); 2181 } 2182 if (ntries == 1000) { 2183 device_printf(sc->sc_dev, 2184 "timeout waiting for firmware readiness\n"); 2185 error = ETIMEDOUT; 2186 goto fail; 2187 } 2188fail: 2189 firmware_put(fw, FIRMWARE_UNLOAD); 2190 return (error); 2191} 2192 2193static int 2194rtwn_dma_init(struct rtwn_softc *sc) 2195{ 2196 uint32_t reg; 2197 int error; 2198 2199 /* Initialize LLT table. */ 2200 error = rtwn_llt_init(sc); 2201 if (error != 0) 2202 return error; 2203 2204 /* Set number of pages for normal priority queue. */ 2205 rtwn_write_2(sc, R92C_RQPN_NPQ, 0); 2206 rtwn_write_4(sc, R92C_RQPN, 2207 /* Set number of pages for public queue. */ 2208 SM(R92C_RQPN_PUBQ, R92C_PUBQ_NPAGES) | 2209 /* Set number of pages for high priority queue. */ 2210 SM(R92C_RQPN_HPQ, R92C_HPQ_NPAGES) | 2211 /* Set number of pages for low priority queue. */ 2212 SM(R92C_RQPN_LPQ, R92C_LPQ_NPAGES) | 2213 /* Load values. */ 2214 R92C_RQPN_LD); 2215 2216 rtwn_write_1(sc, R92C_TXPKTBUF_BCNQ_BDNY, R92C_TX_PAGE_BOUNDARY); 2217 rtwn_write_1(sc, R92C_TXPKTBUF_MGQ_BDNY, R92C_TX_PAGE_BOUNDARY); 2218 rtwn_write_1(sc, R92C_TXPKTBUF_WMAC_LBK_BF_HD, R92C_TX_PAGE_BOUNDARY); 2219 rtwn_write_1(sc, R92C_TRXFF_BNDY, R92C_TX_PAGE_BOUNDARY); 2220 rtwn_write_1(sc, R92C_TDECTRL + 1, R92C_TX_PAGE_BOUNDARY); 2221 2222 reg = rtwn_read_2(sc, R92C_TRXDMA_CTRL); 2223 reg &= ~R92C_TRXDMA_CTRL_QMAP_M; 2224 reg |= 0xF771; 2225 rtwn_write_2(sc, R92C_TRXDMA_CTRL, reg); 2226 2227 rtwn_write_4(sc, R92C_TCR, R92C_TCR_CFENDFORM | (1 << 12) | (1 << 13)); 2228 2229 /* Configure Tx DMA. */ 2230 rtwn_write_4(sc, R92C_BKQ_DESA, sc->tx_ring[RTWN_BK_QUEUE].paddr); 2231 rtwn_write_4(sc, R92C_BEQ_DESA, sc->tx_ring[RTWN_BE_QUEUE].paddr); 2232 rtwn_write_4(sc, R92C_VIQ_DESA, sc->tx_ring[RTWN_VI_QUEUE].paddr); 2233 rtwn_write_4(sc, R92C_VOQ_DESA, sc->tx_ring[RTWN_VO_QUEUE].paddr); 2234 rtwn_write_4(sc, R92C_BCNQ_DESA, sc->tx_ring[RTWN_BEACON_QUEUE].paddr); 2235 rtwn_write_4(sc, R92C_MGQ_DESA, sc->tx_ring[RTWN_MGNT_QUEUE].paddr); 2236 rtwn_write_4(sc, R92C_HQ_DESA, sc->tx_ring[RTWN_HIGH_QUEUE].paddr); 2237 2238 /* Configure Rx DMA. */ 2239 rtwn_write_4(sc, R92C_RX_DESA, sc->rx_ring.paddr); 2240 2241 /* Set Tx/Rx transfer page boundary. */ 2242 rtwn_write_2(sc, R92C_TRXFF_BNDY + 2, 0x27ff); 2243 2244 /* Set Tx/Rx transfer page size. */ 2245 rtwn_write_1(sc, R92C_PBP, 2246 SM(R92C_PBP_PSRX, R92C_PBP_128) | 2247 SM(R92C_PBP_PSTX, R92C_PBP_128)); 2248 return (0); 2249} 2250 2251static void 2252rtwn_mac_init(struct rtwn_softc *sc) 2253{ 2254 int i; 2255 2256 /* Write MAC initialization values. */ 2257 for (i = 0; i < nitems(rtl8192ce_mac); i++) 2258 rtwn_write_1(sc, rtl8192ce_mac[i].reg, rtl8192ce_mac[i].val); 2259} 2260 2261static void 2262rtwn_bb_init(struct rtwn_softc *sc) 2263{ 2264 const struct rtwn_bb_prog *prog; 2265 uint32_t reg; 2266 int i; 2267 2268 /* Enable BB and RF. */ 2269 rtwn_write_2(sc, R92C_SYS_FUNC_EN, 2270 rtwn_read_2(sc, R92C_SYS_FUNC_EN) | 2271 R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST | 2272 R92C_SYS_FUNC_EN_DIO_RF); 2273 2274 rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0xdb83); 2275 2276 rtwn_write_1(sc, R92C_RF_CTRL, 2277 R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB); 2278 2279 rtwn_write_1(sc, R92C_SYS_FUNC_EN, 2280 R92C_SYS_FUNC_EN_DIO_PCIE | R92C_SYS_FUNC_EN_PCIEA | 2281 R92C_SYS_FUNC_EN_PPLL | R92C_SYS_FUNC_EN_BB_GLB_RST | 2282 R92C_SYS_FUNC_EN_BBRSTB); 2283 2284 rtwn_write_1(sc, R92C_AFE_XTAL_CTRL + 1, 0x80); 2285 2286 rtwn_write_4(sc, R92C_LEDCFG0, 2287 rtwn_read_4(sc, R92C_LEDCFG0) | 0x00800000); 2288 2289 /* Select BB programming. */ 2290 prog = (sc->chip & RTWN_CHIP_92C) ? 2291 &rtl8192ce_bb_prog_2t : &rtl8192ce_bb_prog_1t; 2292 2293 /* Write BB initialization values. */ 2294 for (i = 0; i < prog->count; i++) { 2295 rtwn_bb_write(sc, prog->regs[i], prog->vals[i]); 2296 DELAY(1); 2297 } 2298 2299 if (sc->chip & RTWN_CHIP_92C_1T2R) { 2300 /* 8192C 1T only configuration. */ 2301 reg = rtwn_bb_read(sc, R92C_FPGA0_TXINFO); 2302 reg = (reg & ~0x00000003) | 0x2; 2303 rtwn_bb_write(sc, R92C_FPGA0_TXINFO, reg); 2304 2305 reg = rtwn_bb_read(sc, R92C_FPGA1_TXINFO); 2306 reg = (reg & ~0x00300033) | 0x00200022; 2307 rtwn_bb_write(sc, R92C_FPGA1_TXINFO, reg); 2308 2309 reg = rtwn_bb_read(sc, R92C_CCK0_AFESETTING); 2310 reg = (reg & ~0xff000000) | 0x45 << 24; 2311 rtwn_bb_write(sc, R92C_CCK0_AFESETTING, reg); 2312 2313 reg = rtwn_bb_read(sc, R92C_OFDM0_TRXPATHENA); 2314 reg = (reg & ~0x000000ff) | 0x23; 2315 rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, reg); 2316 2317 reg = rtwn_bb_read(sc, R92C_OFDM0_AGCPARAM1); 2318 reg = (reg & ~0x00000030) | 1 << 4; 2319 rtwn_bb_write(sc, R92C_OFDM0_AGCPARAM1, reg); 2320 2321 reg = rtwn_bb_read(sc, 0xe74); 2322 reg = (reg & ~0x0c000000) | 2 << 26; 2323 rtwn_bb_write(sc, 0xe74, reg); 2324 reg = rtwn_bb_read(sc, 0xe78); 2325 reg = (reg & ~0x0c000000) | 2 << 26; 2326 rtwn_bb_write(sc, 0xe78, reg); 2327 reg = rtwn_bb_read(sc, 0xe7c); 2328 reg = (reg & ~0x0c000000) | 2 << 26; 2329 rtwn_bb_write(sc, 0xe7c, reg); 2330 reg = rtwn_bb_read(sc, 0xe80); 2331 reg = (reg & ~0x0c000000) | 2 << 26; 2332 rtwn_bb_write(sc, 0xe80, reg); 2333 reg = rtwn_bb_read(sc, 0xe88); 2334 reg = (reg & ~0x0c000000) | 2 << 26; 2335 rtwn_bb_write(sc, 0xe88, reg); 2336 } 2337 2338 /* Write AGC values. */ 2339 for (i = 0; i < prog->agccount; i++) { 2340 rtwn_bb_write(sc, R92C_OFDM0_AGCRSSITABLE, 2341 prog->agcvals[i]); 2342 DELAY(1); 2343 } 2344 2345 if (rtwn_bb_read(sc, R92C_HSSI_PARAM2(0)) & 2346 R92C_HSSI_PARAM2_CCK_HIPWR) 2347 sc->sc_flags |= RTWN_FLAG_CCK_HIPWR; 2348} 2349 2350static void 2351rtwn_rf_init(struct rtwn_softc *sc) 2352{ 2353 const struct rtwn_rf_prog *prog; 2354 uint32_t reg, type; 2355 int i, j, idx, off; 2356 2357 /* Select RF programming based on board type. */ 2358 if (!(sc->chip & RTWN_CHIP_92C)) { 2359 if (sc->board_type == R92C_BOARD_TYPE_MINICARD) 2360 prog = rtl8188ce_rf_prog; 2361 else if (sc->board_type == R92C_BOARD_TYPE_HIGHPA) 2362 prog = rtl8188ru_rf_prog; 2363 else 2364 prog = rtl8188cu_rf_prog; 2365 } else 2366 prog = rtl8192ce_rf_prog; 2367 2368 for (i = 0; i < sc->nrxchains; i++) { 2369 /* Save RF_ENV control type. */ 2370 idx = i / 2; 2371 off = (i % 2) * 16; 2372 reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(idx)); 2373 type = (reg >> off) & 0x10; 2374 2375 /* Set RF_ENV enable. */ 2376 reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACEOE(i)); 2377 reg |= 0x100000; 2378 rtwn_bb_write(sc, R92C_FPGA0_RFIFACEOE(i), reg); 2379 DELAY(1); 2380 /* Set RF_ENV output high. */ 2381 reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACEOE(i)); 2382 reg |= 0x10; 2383 rtwn_bb_write(sc, R92C_FPGA0_RFIFACEOE(i), reg); 2384 DELAY(1); 2385 /* Set address and data lengths of RF registers. */ 2386 reg = rtwn_bb_read(sc, R92C_HSSI_PARAM2(i)); 2387 reg &= ~R92C_HSSI_PARAM2_ADDR_LENGTH; 2388 rtwn_bb_write(sc, R92C_HSSI_PARAM2(i), reg); 2389 DELAY(1); 2390 reg = rtwn_bb_read(sc, R92C_HSSI_PARAM2(i)); 2391 reg &= ~R92C_HSSI_PARAM2_DATA_LENGTH; 2392 rtwn_bb_write(sc, R92C_HSSI_PARAM2(i), reg); 2393 DELAY(1); 2394 2395 /* Write RF initialization values for this chain. */ 2396 for (j = 0; j < prog[i].count; j++) { 2397 if (prog[i].regs[j] >= 0xf9 && 2398 prog[i].regs[j] <= 0xfe) { 2399 /* 2400 * These are fake RF registers offsets that 2401 * indicate a delay is required. 2402 */ 2403 DELAY(50); 2404 continue; 2405 } 2406 rtwn_rf_write(sc, i, prog[i].regs[j], 2407 prog[i].vals[j]); 2408 DELAY(1); 2409 } 2410 2411 /* Restore RF_ENV control type. */ 2412 reg = rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(idx)); 2413 reg &= ~(0x10 << off) | (type << off); 2414 rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(idx), reg); 2415 2416 /* Cache RF register CHNLBW. */ 2417 sc->rf_chnlbw[i] = rtwn_rf_read(sc, i, R92C_RF_CHNLBW); 2418 } 2419 2420 if ((sc->chip & (RTWN_CHIP_UMC_A_CUT | RTWN_CHIP_92C)) == 2421 RTWN_CHIP_UMC_A_CUT) { 2422 rtwn_rf_write(sc, 0, R92C_RF_RX_G1, 0x30255); 2423 rtwn_rf_write(sc, 0, R92C_RF_RX_G2, 0x50a00); 2424 } 2425} 2426 2427static void 2428rtwn_cam_init(struct rtwn_softc *sc) 2429{ 2430 /* Invalidate all CAM entries. */ 2431 rtwn_write_4(sc, R92C_CAMCMD, 2432 R92C_CAMCMD_POLLING | R92C_CAMCMD_CLR); 2433} 2434 2435static void 2436rtwn_pa_bias_init(struct rtwn_softc *sc) 2437{ 2438 uint8_t reg; 2439 int i; 2440 2441 for (i = 0; i < sc->nrxchains; i++) { 2442 if (sc->pa_setting & (1 << i)) 2443 continue; 2444 rtwn_rf_write(sc, i, R92C_RF_IPA, 0x0f406); 2445 rtwn_rf_write(sc, i, R92C_RF_IPA, 0x4f406); 2446 rtwn_rf_write(sc, i, R92C_RF_IPA, 0x8f406); 2447 rtwn_rf_write(sc, i, R92C_RF_IPA, 0xcf406); 2448 } 2449 if (!(sc->pa_setting & 0x10)) { 2450 reg = rtwn_read_1(sc, 0x16); 2451 reg = (reg & ~0xf0) | 0x90; 2452 rtwn_write_1(sc, 0x16, reg); 2453 } 2454} 2455 2456static void 2457rtwn_rxfilter_init(struct rtwn_softc *sc) 2458{ 2459 /* Initialize Rx filter. */ 2460 /* TODO: use better filter for monitor mode. */ 2461 rtwn_write_4(sc, R92C_RCR, 2462 R92C_RCR_AAP | R92C_RCR_APM | R92C_RCR_AM | R92C_RCR_AB | 2463 R92C_RCR_APP_ICV | R92C_RCR_AMF | R92C_RCR_HTC_LOC_CTRL | 2464 R92C_RCR_APP_MIC | R92C_RCR_APP_PHYSTS); 2465 /* Accept all multicast frames. */ 2466 rtwn_write_4(sc, R92C_MAR + 0, 0xffffffff); 2467 rtwn_write_4(sc, R92C_MAR + 4, 0xffffffff); 2468 /* Accept all management frames. */ 2469 rtwn_write_2(sc, R92C_RXFLTMAP0, 0xffff); 2470 /* Reject all control frames. */ 2471 rtwn_write_2(sc, R92C_RXFLTMAP1, 0x0000); 2472 /* Accept all data frames. */ 2473 rtwn_write_2(sc, R92C_RXFLTMAP2, 0xffff); 2474} 2475 2476static void 2477rtwn_edca_init(struct rtwn_softc *sc) 2478{ 2479 2480 rtwn_write_2(sc, R92C_SPEC_SIFS, 0x1010); 2481 rtwn_write_2(sc, R92C_MAC_SPEC_SIFS, 0x1010); 2482 rtwn_write_2(sc, R92C_SIFS_CCK, 0x1010); 2483 rtwn_write_2(sc, R92C_SIFS_OFDM, 0x0e0e); 2484 rtwn_write_4(sc, R92C_EDCA_BE_PARAM, 0x005ea42b); 2485 rtwn_write_4(sc, R92C_EDCA_BK_PARAM, 0x0000a44f); 2486 rtwn_write_4(sc, R92C_EDCA_VI_PARAM, 0x005e4322); 2487 rtwn_write_4(sc, R92C_EDCA_VO_PARAM, 0x002f3222); 2488} 2489 2490static void 2491rtwn_write_txpower(struct rtwn_softc *sc, int chain, 2492 uint16_t power[RTWN_RIDX_COUNT]) 2493{ 2494 uint32_t reg; 2495 2496 /* Write per-CCK rate Tx power. */ 2497 if (chain == 0) { 2498 reg = rtwn_bb_read(sc, R92C_TXAGC_A_CCK1_MCS32); 2499 reg = RW(reg, R92C_TXAGC_A_CCK1, power[0]); 2500 rtwn_bb_write(sc, R92C_TXAGC_A_CCK1_MCS32, reg); 2501 reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK11_A_CCK2_11); 2502 reg = RW(reg, R92C_TXAGC_A_CCK2, power[1]); 2503 reg = RW(reg, R92C_TXAGC_A_CCK55, power[2]); 2504 reg = RW(reg, R92C_TXAGC_A_CCK11, power[3]); 2505 rtwn_bb_write(sc, R92C_TXAGC_B_CCK11_A_CCK2_11, reg); 2506 } else { 2507 reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK1_55_MCS32); 2508 reg = RW(reg, R92C_TXAGC_B_CCK1, power[0]); 2509 reg = RW(reg, R92C_TXAGC_B_CCK2, power[1]); 2510 reg = RW(reg, R92C_TXAGC_B_CCK55, power[2]); 2511 rtwn_bb_write(sc, R92C_TXAGC_B_CCK1_55_MCS32, reg); 2512 reg = rtwn_bb_read(sc, R92C_TXAGC_B_CCK11_A_CCK2_11); 2513 reg = RW(reg, R92C_TXAGC_B_CCK11, power[3]); 2514 rtwn_bb_write(sc, R92C_TXAGC_B_CCK11_A_CCK2_11, reg); 2515 } 2516 /* Write per-OFDM rate Tx power. */ 2517 rtwn_bb_write(sc, R92C_TXAGC_RATE18_06(chain), 2518 SM(R92C_TXAGC_RATE06, power[ 4]) | 2519 SM(R92C_TXAGC_RATE09, power[ 5]) | 2520 SM(R92C_TXAGC_RATE12, power[ 6]) | 2521 SM(R92C_TXAGC_RATE18, power[ 7])); 2522 rtwn_bb_write(sc, R92C_TXAGC_RATE54_24(chain), 2523 SM(R92C_TXAGC_RATE24, power[ 8]) | 2524 SM(R92C_TXAGC_RATE36, power[ 9]) | 2525 SM(R92C_TXAGC_RATE48, power[10]) | 2526 SM(R92C_TXAGC_RATE54, power[11])); 2527 /* Write per-MCS Tx power. */ 2528 rtwn_bb_write(sc, R92C_TXAGC_MCS03_MCS00(chain), 2529 SM(R92C_TXAGC_MCS00, power[12]) | 2530 SM(R92C_TXAGC_MCS01, power[13]) | 2531 SM(R92C_TXAGC_MCS02, power[14]) | 2532 SM(R92C_TXAGC_MCS03, power[15])); 2533 rtwn_bb_write(sc, R92C_TXAGC_MCS07_MCS04(chain), 2534 SM(R92C_TXAGC_MCS04, power[16]) | 2535 SM(R92C_TXAGC_MCS05, power[17]) | 2536 SM(R92C_TXAGC_MCS06, power[18]) | 2537 SM(R92C_TXAGC_MCS07, power[19])); 2538 rtwn_bb_write(sc, R92C_TXAGC_MCS11_MCS08(chain), 2539 SM(R92C_TXAGC_MCS08, power[20]) | 2540 SM(R92C_TXAGC_MCS09, power[21]) | 2541 SM(R92C_TXAGC_MCS10, power[22]) | 2542 SM(R92C_TXAGC_MCS11, power[23])); 2543 rtwn_bb_write(sc, R92C_TXAGC_MCS15_MCS12(chain), 2544 SM(R92C_TXAGC_MCS12, power[24]) | 2545 SM(R92C_TXAGC_MCS13, power[25]) | 2546 SM(R92C_TXAGC_MCS14, power[26]) | 2547 SM(R92C_TXAGC_MCS15, power[27])); 2548} 2549 2550static void 2551rtwn_get_txpower(struct rtwn_softc *sc, int chain, 2552 struct ieee80211_channel *c, struct ieee80211_channel *extc, 2553 uint16_t power[RTWN_RIDX_COUNT]) 2554{ 2555 struct ieee80211com *ic = &sc->sc_ic; 2556 struct r92c_rom *rom = &sc->rom; 2557 uint16_t cckpow, ofdmpow, htpow, diff, max; 2558 const struct rtwn_txpwr *base; 2559 int ridx, chan, group; 2560 2561 /* Determine channel group. */ 2562 chan = ieee80211_chan2ieee(ic, c); /* XXX center freq! */ 2563 if (chan <= 3) 2564 group = 0; 2565 else if (chan <= 9) 2566 group = 1; 2567 else 2568 group = 2; 2569 2570 /* Get original Tx power based on board type and RF chain. */ 2571 if (!(sc->chip & RTWN_CHIP_92C)) { 2572 if (sc->board_type == R92C_BOARD_TYPE_HIGHPA) 2573 base = &rtl8188ru_txagc[chain]; 2574 else 2575 base = &rtl8192cu_txagc[chain]; 2576 } else 2577 base = &rtl8192cu_txagc[chain]; 2578 2579 memset(power, 0, RTWN_RIDX_COUNT * sizeof(power[0])); 2580 if (sc->regulatory == 0) { 2581 for (ridx = 0; ridx <= 3; ridx++) 2582 power[ridx] = base->pwr[0][ridx]; 2583 } 2584 for (ridx = 4; ridx < RTWN_RIDX_COUNT; ridx++) { 2585 if (sc->regulatory == 3) { 2586 power[ridx] = base->pwr[0][ridx]; 2587 /* Apply vendor limits. */ 2588 if (extc != NULL) 2589 max = rom->ht40_max_pwr[group]; 2590 else 2591 max = rom->ht20_max_pwr[group]; 2592 max = (max >> (chain * 4)) & 0xf; 2593 if (power[ridx] > max) 2594 power[ridx] = max; 2595 } else if (sc->regulatory == 1) { 2596 if (extc == NULL) 2597 power[ridx] = base->pwr[group][ridx]; 2598 } else if (sc->regulatory != 2) 2599 power[ridx] = base->pwr[0][ridx]; 2600 } 2601 2602 /* Compute per-CCK rate Tx power. */ 2603 cckpow = rom->cck_tx_pwr[chain][group]; 2604 for (ridx = 0; ridx <= 3; ridx++) { 2605 power[ridx] += cckpow; 2606 if (power[ridx] > R92C_MAX_TX_PWR) 2607 power[ridx] = R92C_MAX_TX_PWR; 2608 } 2609 2610 htpow = rom->ht40_1s_tx_pwr[chain][group]; 2611 if (sc->ntxchains > 1) { 2612 /* Apply reduction for 2 spatial streams. */ 2613 diff = rom->ht40_2s_tx_pwr_diff[group]; 2614 diff = (diff >> (chain * 4)) & 0xf; 2615 htpow = (htpow > diff) ? htpow - diff : 0; 2616 } 2617 2618 /* Compute per-OFDM rate Tx power. */ 2619 diff = rom->ofdm_tx_pwr_diff[group]; 2620 diff = (diff >> (chain * 4)) & 0xf; 2621 ofdmpow = htpow + diff; /* HT->OFDM correction. */ 2622 for (ridx = 4; ridx <= 11; ridx++) { 2623 power[ridx] += ofdmpow; 2624 if (power[ridx] > R92C_MAX_TX_PWR) 2625 power[ridx] = R92C_MAX_TX_PWR; 2626 } 2627 2628 /* Compute per-MCS Tx power. */ 2629 if (extc == NULL) { 2630 diff = rom->ht20_tx_pwr_diff[group]; 2631 diff = (diff >> (chain * 4)) & 0xf; 2632 htpow += diff; /* HT40->HT20 correction. */ 2633 } 2634 for (ridx = 12; ridx <= 27; ridx++) { 2635 power[ridx] += htpow; 2636 if (power[ridx] > R92C_MAX_TX_PWR) 2637 power[ridx] = R92C_MAX_TX_PWR; 2638 } 2639#ifdef RTWN_DEBUG 2640 if (sc->sc_debug >= 4) { 2641 /* Dump per-rate Tx power values. */ 2642 printf("Tx power for chain %d:\n", chain); 2643 for (ridx = 0; ridx < RTWN_RIDX_COUNT; ridx++) 2644 printf("Rate %d = %u\n", ridx, power[ridx]); 2645 } 2646#endif 2647} 2648 2649static void 2650rtwn_set_txpower(struct rtwn_softc *sc, struct ieee80211_channel *c, 2651 struct ieee80211_channel *extc) 2652{ 2653 uint16_t power[RTWN_RIDX_COUNT]; 2654 int i; 2655 2656 for (i = 0; i < sc->ntxchains; i++) { 2657 /* Compute per-rate Tx power values. */ 2658 rtwn_get_txpower(sc, i, c, extc, power); 2659 /* Write per-rate Tx power values to hardware. */ 2660 rtwn_write_txpower(sc, i, power); 2661 } 2662} 2663 2664static void 2665rtwn_set_rx_bssid_all(struct rtwn_softc *sc, int enable) 2666{ 2667 uint32_t reg; 2668 2669 reg = rtwn_read_4(sc, R92C_RCR); 2670 if (enable) 2671 reg &= ~R92C_RCR_CBSSID_BCN; 2672 else 2673 reg |= R92C_RCR_CBSSID_BCN; 2674 rtwn_write_4(sc, R92C_RCR, reg); 2675} 2676 2677static void 2678rtwn_set_gain(struct rtwn_softc *sc, uint8_t gain) 2679{ 2680 uint32_t reg; 2681 2682 reg = rtwn_bb_read(sc, R92C_OFDM0_AGCCORE1(0)); 2683 reg = RW(reg, R92C_OFDM0_AGCCORE1_GAIN, gain); 2684 rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(0), reg); 2685 2686 reg = rtwn_bb_read(sc, R92C_OFDM0_AGCCORE1(1)); 2687 reg = RW(reg, R92C_OFDM0_AGCCORE1_GAIN, gain); 2688 rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(1), reg); 2689} 2690 2691static void 2692rtwn_scan_start(struct ieee80211com *ic) 2693{ 2694 struct rtwn_softc *sc = ic->ic_softc; 2695 2696 RTWN_LOCK(sc); 2697 /* Receive beacons / probe responses from any BSSID. */ 2698 rtwn_set_rx_bssid_all(sc, 1); 2699 /* Set gain for scanning. */ 2700 rtwn_set_gain(sc, 0x20); 2701 RTWN_UNLOCK(sc); 2702} 2703 2704static void 2705rtwn_scan_end(struct ieee80211com *ic) 2706{ 2707 struct rtwn_softc *sc = ic->ic_softc; 2708 2709 RTWN_LOCK(sc); 2710 /* Restore limitations. */ 2711 rtwn_set_rx_bssid_all(sc, 0); 2712 /* Set gain under link. */ 2713 rtwn_set_gain(sc, 0x32); 2714 RTWN_UNLOCK(sc); 2715} 2716 2717static void 2718rtwn_set_channel(struct ieee80211com *ic) 2719{ 2720 struct rtwn_softc *sc = ic->ic_softc; 2721 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 2722 2723 RTWN_LOCK(sc); 2724 if (vap->iv_state == IEEE80211_S_SCAN) { 2725 /* Make link LED blink during scan. */ 2726 rtwn_set_led(sc, RTWN_LED_LINK, !sc->ledlink); 2727 } 2728 rtwn_set_chan(sc, ic->ic_curchan, NULL); 2729 RTWN_UNLOCK(sc); 2730} 2731 2732static void 2733rtwn_update_mcast(struct ieee80211com *ic) 2734{ 2735 2736 /* XXX do nothing? */ 2737} 2738 2739static void 2740rtwn_set_chan(struct rtwn_softc *sc, struct ieee80211_channel *c, 2741 struct ieee80211_channel *extc) 2742{ 2743 struct ieee80211com *ic = &sc->sc_ic; 2744 u_int chan; 2745 int i; 2746 2747 chan = ieee80211_chan2ieee(ic, c); /* XXX center freq! */ 2748 if (chan == 0 || chan == IEEE80211_CHAN_ANY) { 2749 device_printf(sc->sc_dev, 2750 "%s: invalid channel %x\n", __func__, chan); 2751 return; 2752 } 2753 2754 /* Set Tx power for this new channel. */ 2755 rtwn_set_txpower(sc, c, extc); 2756 2757 for (i = 0; i < sc->nrxchains; i++) { 2758 rtwn_rf_write(sc, i, R92C_RF_CHNLBW, 2759 RW(sc->rf_chnlbw[i], R92C_RF_CHNLBW_CHNL, chan)); 2760 } 2761#ifndef IEEE80211_NO_HT 2762 if (extc != NULL) { 2763 uint32_t reg; 2764 2765 /* Is secondary channel below or above primary? */ 2766 int prichlo = c->ic_freq < extc->ic_freq; 2767 2768 rtwn_write_1(sc, R92C_BWOPMODE, 2769 rtwn_read_1(sc, R92C_BWOPMODE) & ~R92C_BWOPMODE_20MHZ); 2770 2771 reg = rtwn_read_1(sc, R92C_RRSR + 2); 2772 reg = (reg & ~0x6f) | (prichlo ? 1 : 2) << 5; 2773 rtwn_write_1(sc, R92C_RRSR + 2, reg); 2774 2775 rtwn_bb_write(sc, R92C_FPGA0_RFMOD, 2776 rtwn_bb_read(sc, R92C_FPGA0_RFMOD) | R92C_RFMOD_40MHZ); 2777 rtwn_bb_write(sc, R92C_FPGA1_RFMOD, 2778 rtwn_bb_read(sc, R92C_FPGA1_RFMOD) | R92C_RFMOD_40MHZ); 2779 2780 /* Set CCK side band. */ 2781 reg = rtwn_bb_read(sc, R92C_CCK0_SYSTEM); 2782 reg = (reg & ~0x00000010) | (prichlo ? 0 : 1) << 4; 2783 rtwn_bb_write(sc, R92C_CCK0_SYSTEM, reg); 2784 2785 reg = rtwn_bb_read(sc, R92C_OFDM1_LSTF); 2786 reg = (reg & ~0x00000c00) | (prichlo ? 1 : 2) << 10; 2787 rtwn_bb_write(sc, R92C_OFDM1_LSTF, reg); 2788 2789 rtwn_bb_write(sc, R92C_FPGA0_ANAPARAM2, 2790 rtwn_bb_read(sc, R92C_FPGA0_ANAPARAM2) & 2791 ~R92C_FPGA0_ANAPARAM2_CBW20); 2792 2793 reg = rtwn_bb_read(sc, 0x818); 2794 reg = (reg & ~0x0c000000) | (prichlo ? 2 : 1) << 26; 2795 rtwn_bb_write(sc, 0x818, reg); 2796 2797 /* Select 40MHz bandwidth. */ 2798 rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, 2799 (sc->rf_chnlbw[0] & ~0xfff) | chan); 2800 } else 2801#endif 2802 { 2803 rtwn_write_1(sc, R92C_BWOPMODE, 2804 rtwn_read_1(sc, R92C_BWOPMODE) | R92C_BWOPMODE_20MHZ); 2805 2806 rtwn_bb_write(sc, R92C_FPGA0_RFMOD, 2807 rtwn_bb_read(sc, R92C_FPGA0_RFMOD) & ~R92C_RFMOD_40MHZ); 2808 rtwn_bb_write(sc, R92C_FPGA1_RFMOD, 2809 rtwn_bb_read(sc, R92C_FPGA1_RFMOD) & ~R92C_RFMOD_40MHZ); 2810 2811 rtwn_bb_write(sc, R92C_FPGA0_ANAPARAM2, 2812 rtwn_bb_read(sc, R92C_FPGA0_ANAPARAM2) | 2813 R92C_FPGA0_ANAPARAM2_CBW20); 2814 2815 /* Select 20MHz bandwidth. */ 2816 rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, 2817 (sc->rf_chnlbw[0] & ~0xfff) | R92C_RF_CHNLBW_BW20 | chan); 2818 } 2819} 2820 2821static int 2822rtwn_iq_calib_chain(struct rtwn_softc *sc, int chain, uint16_t tx[2], 2823 uint16_t rx[2]) 2824{ 2825 uint32_t status; 2826 int offset = chain * 0x20; 2827 2828 if (chain == 0) { /* IQ calibration for chain 0. */ 2829 /* IQ calibration settings for chain 0. */ 2830 rtwn_bb_write(sc, 0xe30, 0x10008c1f); 2831 rtwn_bb_write(sc, 0xe34, 0x10008c1f); 2832 rtwn_bb_write(sc, 0xe38, 0x82140102); 2833 2834 if (sc->ntxchains > 1) { 2835 rtwn_bb_write(sc, 0xe3c, 0x28160202); /* 2T */ 2836 /* IQ calibration settings for chain 1. */ 2837 rtwn_bb_write(sc, 0xe50, 0x10008c22); 2838 rtwn_bb_write(sc, 0xe54, 0x10008c22); 2839 rtwn_bb_write(sc, 0xe58, 0x82140102); 2840 rtwn_bb_write(sc, 0xe5c, 0x28160202); 2841 } else 2842 rtwn_bb_write(sc, 0xe3c, 0x28160502); /* 1T */ 2843 2844 /* LO calibration settings. */ 2845 rtwn_bb_write(sc, 0xe4c, 0x001028d1); 2846 /* We're doing LO and IQ calibration in one shot. */ 2847 rtwn_bb_write(sc, 0xe48, 0xf9000000); 2848 rtwn_bb_write(sc, 0xe48, 0xf8000000); 2849 2850 } else { /* IQ calibration for chain 1. */ 2851 /* We're doing LO and IQ calibration in one shot. */ 2852 rtwn_bb_write(sc, 0xe60, 0x00000002); 2853 rtwn_bb_write(sc, 0xe60, 0x00000000); 2854 } 2855 2856 /* Give LO and IQ calibrations the time to complete. */ 2857 DELAY(1000); 2858 2859 /* Read IQ calibration status. */ 2860 status = rtwn_bb_read(sc, 0xeac); 2861 2862 if (status & (1 << (28 + chain * 3))) 2863 return (0); /* Tx failed. */ 2864 /* Read Tx IQ calibration results. */ 2865 tx[0] = (rtwn_bb_read(sc, 0xe94 + offset) >> 16) & 0x3ff; 2866 tx[1] = (rtwn_bb_read(sc, 0xe9c + offset) >> 16) & 0x3ff; 2867 if (tx[0] == 0x142 || tx[1] == 0x042) 2868 return (0); /* Tx failed. */ 2869 2870 if (status & (1 << (27 + chain * 3))) 2871 return (1); /* Rx failed. */ 2872 /* Read Rx IQ calibration results. */ 2873 rx[0] = (rtwn_bb_read(sc, 0xea4 + offset) >> 16) & 0x3ff; 2874 rx[1] = (rtwn_bb_read(sc, 0xeac + offset) >> 16) & 0x3ff; 2875 if (rx[0] == 0x132 || rx[1] == 0x036) 2876 return (1); /* Rx failed. */ 2877 2878 return (3); /* Both Tx and Rx succeeded. */ 2879} 2880 2881static void 2882rtwn_iq_calib_run(struct rtwn_softc *sc, int n, uint16_t tx[2][2], 2883 uint16_t rx[2][2]) 2884{ 2885 /* Registers to save and restore during IQ calibration. */ 2886 struct iq_cal_regs { 2887 uint32_t adda[16]; 2888 uint8_t txpause; 2889 uint8_t bcn_ctrl; 2890 uint8_t ustime_tsf; 2891 uint32_t gpio_muxcfg; 2892 uint32_t ofdm0_trxpathena; 2893 uint32_t ofdm0_trmuxpar; 2894 uint32_t fpga0_rfifacesw1; 2895 } iq_cal_regs; 2896 static const uint16_t reg_adda[16] = { 2897 0x85c, 0xe6c, 0xe70, 0xe74, 2898 0xe78, 0xe7c, 0xe80, 0xe84, 2899 0xe88, 0xe8c, 0xed0, 0xed4, 2900 0xed8, 0xedc, 0xee0, 0xeec 2901 }; 2902 int i, chain; 2903 uint32_t hssi_param1; 2904 2905 if (n == 0) { 2906 for (i = 0; i < nitems(reg_adda); i++) 2907 iq_cal_regs.adda[i] = rtwn_bb_read(sc, reg_adda[i]); 2908 2909 iq_cal_regs.txpause = rtwn_read_1(sc, R92C_TXPAUSE); 2910 iq_cal_regs.bcn_ctrl = rtwn_read_1(sc, R92C_BCN_CTRL); 2911 iq_cal_regs.ustime_tsf = rtwn_read_1(sc, R92C_USTIME_TSF); 2912 iq_cal_regs.gpio_muxcfg = rtwn_read_4(sc, R92C_GPIO_MUXCFG); 2913 } 2914 2915 if (sc->ntxchains == 1) { 2916 rtwn_bb_write(sc, reg_adda[0], 0x0b1b25a0); 2917 for (i = 1; i < nitems(reg_adda); i++) 2918 rtwn_bb_write(sc, reg_adda[i], 0x0bdb25a0); 2919 } else { 2920 for (i = 0; i < nitems(reg_adda); i++) 2921 rtwn_bb_write(sc, reg_adda[i], 0x04db25a4); 2922 } 2923 2924 hssi_param1 = rtwn_bb_read(sc, R92C_HSSI_PARAM1(0)); 2925 if (!(hssi_param1 & R92C_HSSI_PARAM1_PI)) { 2926 rtwn_bb_write(sc, R92C_HSSI_PARAM1(0), 2927 hssi_param1 | R92C_HSSI_PARAM1_PI); 2928 rtwn_bb_write(sc, R92C_HSSI_PARAM1(1), 2929 hssi_param1 | R92C_HSSI_PARAM1_PI); 2930 } 2931 2932 if (n == 0) { 2933 iq_cal_regs.ofdm0_trxpathena = 2934 rtwn_bb_read(sc, R92C_OFDM0_TRXPATHENA); 2935 iq_cal_regs.ofdm0_trmuxpar = 2936 rtwn_bb_read(sc, R92C_OFDM0_TRMUXPAR); 2937 iq_cal_regs.fpga0_rfifacesw1 = 2938 rtwn_bb_read(sc, R92C_FPGA0_RFIFACESW(1)); 2939 } 2940 2941 rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, 0x03a05600); 2942 rtwn_bb_write(sc, R92C_OFDM0_TRMUXPAR, 0x000800e4); 2943 rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(1), 0x22204000); 2944 if (sc->ntxchains > 1) { 2945 rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00010000); 2946 rtwn_bb_write(sc, R92C_LSSI_PARAM(1), 0x00010000); 2947 } 2948 2949 rtwn_write_1(sc, R92C_TXPAUSE, 0x3f); 2950 rtwn_write_1(sc, R92C_BCN_CTRL, iq_cal_regs.bcn_ctrl & ~(0x08)); 2951 rtwn_write_1(sc, R92C_USTIME_TSF, iq_cal_regs.ustime_tsf & ~(0x08)); 2952 rtwn_write_1(sc, R92C_GPIO_MUXCFG, 2953 iq_cal_regs.gpio_muxcfg & ~(0x20)); 2954 2955 rtwn_bb_write(sc, 0x0b68, 0x00080000); 2956 if (sc->ntxchains > 1) 2957 rtwn_bb_write(sc, 0x0b6c, 0x00080000); 2958 2959 rtwn_bb_write(sc, 0x0e28, 0x80800000); 2960 rtwn_bb_write(sc, 0x0e40, 0x01007c00); 2961 rtwn_bb_write(sc, 0x0e44, 0x01004800); 2962 2963 rtwn_bb_write(sc, 0x0b68, 0x00080000); 2964 2965 for (chain = 0; chain < sc->ntxchains; chain++) { 2966 if (chain > 0) { 2967 /* Put chain 0 on standby. */ 2968 rtwn_bb_write(sc, 0x0e28, 0x00); 2969 rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00010000); 2970 rtwn_bb_write(sc, 0x0e28, 0x80800000); 2971 2972 /* Enable chain 1. */ 2973 for (i = 0; i < nitems(reg_adda); i++) 2974 rtwn_bb_write(sc, reg_adda[i], 0x0b1b25a4); 2975 } 2976 2977 /* Run IQ calibration twice. */ 2978 for (i = 0; i < 2; i++) { 2979 int ret; 2980 2981 ret = rtwn_iq_calib_chain(sc, chain, 2982 tx[chain], rx[chain]); 2983 if (ret == 0) { 2984 DPRINTF(("%s: chain %d: Tx failed.\n", 2985 __func__, chain)); 2986 tx[chain][0] = 0xff; 2987 tx[chain][1] = 0xff; 2988 rx[chain][0] = 0xff; 2989 rx[chain][1] = 0xff; 2990 } else if (ret == 1) { 2991 DPRINTF(("%s: chain %d: Rx failed.\n", 2992 __func__, chain)); 2993 rx[chain][0] = 0xff; 2994 rx[chain][1] = 0xff; 2995 } else if (ret == 3) { 2996 DPRINTF(("%s: chain %d: Both Tx and Rx " 2997 "succeeded.\n", __func__, chain)); 2998 } 2999 } 3000 3001 DPRINTF(("%s: results for run %d chain %d: tx[0]=0x%x, " 3002 "tx[1]=0x%x rx[0]=0x%x rx[1]=0x%x\n", __func__, n, chain, 3003 tx[chain][0], tx[chain][1], rx[chain][0], rx[chain][1])); 3004 } 3005 3006 rtwn_bb_write(sc, R92C_OFDM0_TRXPATHENA, 3007 iq_cal_regs.ofdm0_trxpathena); 3008 rtwn_bb_write(sc, R92C_FPGA0_RFIFACESW(1), 3009 iq_cal_regs.fpga0_rfifacesw1); 3010 rtwn_bb_write(sc, R92C_OFDM0_TRMUXPAR, iq_cal_regs.ofdm0_trmuxpar); 3011 3012 rtwn_bb_write(sc, 0x0e28, 0x00); 3013 rtwn_bb_write(sc, R92C_LSSI_PARAM(0), 0x00032ed3); 3014 if (sc->ntxchains > 1) 3015 rtwn_bb_write(sc, R92C_LSSI_PARAM(1), 0x00032ed3); 3016 3017 if (n != 0) { 3018 if (!(hssi_param1 & R92C_HSSI_PARAM1_PI)) { 3019 rtwn_bb_write(sc, R92C_HSSI_PARAM1(0), hssi_param1); 3020 rtwn_bb_write(sc, R92C_HSSI_PARAM1(1), hssi_param1); 3021 } 3022 3023 for (i = 0; i < nitems(reg_adda); i++) 3024 rtwn_bb_write(sc, reg_adda[i], iq_cal_regs.adda[i]); 3025 3026 rtwn_write_1(sc, R92C_TXPAUSE, iq_cal_regs.txpause); 3027 rtwn_write_1(sc, R92C_BCN_CTRL, iq_cal_regs.bcn_ctrl); 3028 rtwn_write_1(sc, R92C_USTIME_TSF, iq_cal_regs.ustime_tsf); 3029 rtwn_write_4(sc, R92C_GPIO_MUXCFG, iq_cal_regs.gpio_muxcfg); 3030 } 3031} 3032 3033#define RTWN_IQ_CAL_MAX_TOLERANCE 5 3034static int 3035rtwn_iq_calib_compare_results(uint16_t tx1[2][2], uint16_t rx1[2][2], 3036 uint16_t tx2[2][2], uint16_t rx2[2][2], int ntxchains) 3037{ 3038 int chain, i, tx_ok[2], rx_ok[2]; 3039 3040 tx_ok[0] = tx_ok[1] = rx_ok[0] = rx_ok[1] = 0; 3041 for (chain = 0; chain < ntxchains; chain++) { 3042 for (i = 0; i < 2; i++) { 3043 if (tx1[chain][i] == 0xff || tx2[chain][i] == 0xff || 3044 rx1[chain][i] == 0xff || rx2[chain][i] == 0xff) 3045 continue; 3046 3047 tx_ok[chain] = (abs(tx1[chain][i] - tx2[chain][i]) <= 3048 RTWN_IQ_CAL_MAX_TOLERANCE); 3049 3050 rx_ok[chain] = (abs(rx1[chain][i] - rx2[chain][i]) <= 3051 RTWN_IQ_CAL_MAX_TOLERANCE); 3052 } 3053 } 3054 3055 if (ntxchains > 1) 3056 return (tx_ok[0] && tx_ok[1] && rx_ok[0] && rx_ok[1]); 3057 else 3058 return (tx_ok[0] && rx_ok[0]); 3059} 3060#undef RTWN_IQ_CAL_MAX_TOLERANCE 3061 3062static void 3063rtwn_iq_calib_write_results(struct rtwn_softc *sc, uint16_t tx[2], 3064 uint16_t rx[2], int chain) 3065{ 3066 uint32_t reg, val, x; 3067 long y, tx_c; 3068 3069 if (tx[0] == 0xff || tx[1] == 0xff) 3070 return; 3071 3072 reg = rtwn_bb_read(sc, R92C_OFDM0_TXIQIMBALANCE(chain)); 3073 val = ((reg >> 22) & 0x3ff); 3074 x = tx[0]; 3075 if (x & 0x0200) 3076 x |= 0xfc00; 3077 reg = (((x * val) >> 8) & 0x3ff); 3078 rtwn_bb_write(sc, R92C_OFDM0_TXIQIMBALANCE(chain), reg); 3079 3080 reg = rtwn_bb_read(sc, R92C_OFDM0_ECCATHRESHOLD); 3081 if (((x * val) >> 7) & 0x01) 3082 reg |= 0x80000000; 3083 else 3084 reg &= ~0x80000000; 3085 rtwn_bb_write(sc, R92C_OFDM0_ECCATHRESHOLD, reg); 3086 3087 y = tx[1]; 3088 if (y & 0x00000200) 3089 y |= 0xfffffc00; 3090 tx_c = (y * val) >> 8; 3091 reg = rtwn_bb_read(sc, R92C_OFDM0_TXAFE(chain)); 3092 reg |= ((((tx_c & 0x3c0) >> 6) << 24) & 0xf0000000); 3093 rtwn_bb_write(sc, R92C_OFDM0_TXAFE(chain), reg); 3094 3095 reg = rtwn_bb_read(sc, R92C_OFDM0_TXIQIMBALANCE(chain)); 3096 reg |= (((tx_c & 0x3f) << 16) & 0x003F0000); 3097 rtwn_bb_write(sc, R92C_OFDM0_TXIQIMBALANCE(chain), reg); 3098 3099 reg = rtwn_bb_read(sc, R92C_OFDM0_ECCATHRESHOLD); 3100 if (((y * val) >> 7) & 0x01) 3101 reg |= 0x20000000; 3102 else 3103 reg &= ~0x20000000; 3104 rtwn_bb_write(sc, R92C_OFDM0_ECCATHRESHOLD, reg); 3105 3106 if (rx[0] == 0xff || rx[1] == 0xff) 3107 return; 3108 3109 reg = rtwn_bb_read(sc, R92C_OFDM0_RXIQIMBALANCE(chain)); 3110 reg |= (rx[0] & 0x3ff); 3111 rtwn_bb_write(sc, R92C_OFDM0_RXIQIMBALANCE(chain), reg); 3112 reg |= (((rx[1] & 0x03f) << 8) & 0xFC00); 3113 rtwn_bb_write(sc, R92C_OFDM0_RXIQIMBALANCE(chain), reg); 3114 3115 if (chain == 0) { 3116 reg = rtwn_bb_read(sc, R92C_OFDM0_RXIQEXTANTA); 3117 reg |= (((rx[1] & 0xf) >> 6) & 0x000f); 3118 rtwn_bb_write(sc, R92C_OFDM0_RXIQEXTANTA, reg); 3119 } else { 3120 reg = rtwn_bb_read(sc, R92C_OFDM0_AGCRSSITABLE); 3121 reg |= ((((rx[1] & 0xf) >> 6) << 12) & 0xf000); 3122 rtwn_bb_write(sc, R92C_OFDM0_AGCRSSITABLE, reg); 3123 } 3124} 3125 3126#define RTWN_IQ_CAL_NRUN 3 3127static void 3128rtwn_iq_calib(struct rtwn_softc *sc) 3129{ 3130 uint16_t tx[RTWN_IQ_CAL_NRUN][2][2], rx[RTWN_IQ_CAL_NRUN][2][2]; 3131 int n, valid; 3132 3133 valid = 0; 3134 for (n = 0; n < RTWN_IQ_CAL_NRUN; n++) { 3135 rtwn_iq_calib_run(sc, n, tx[n], rx[n]); 3136 3137 if (n == 0) 3138 continue; 3139 3140 /* Valid results remain stable after consecutive runs. */ 3141 valid = rtwn_iq_calib_compare_results(tx[n - 1], rx[n - 1], 3142 tx[n], rx[n], sc->ntxchains); 3143 if (valid) 3144 break; 3145 } 3146 3147 if (valid) { 3148 rtwn_iq_calib_write_results(sc, tx[n][0], rx[n][0], 0); 3149 if (sc->ntxchains > 1) 3150 rtwn_iq_calib_write_results(sc, tx[n][1], rx[n][1], 1); 3151 } 3152} 3153#undef RTWN_IQ_CAL_NRUN 3154 3155static void 3156rtwn_lc_calib(struct rtwn_softc *sc) 3157{ 3158 uint32_t rf_ac[2]; 3159 uint8_t txmode; 3160 int i; 3161 3162 txmode = rtwn_read_1(sc, R92C_OFDM1_LSTF + 3); 3163 if ((txmode & 0x70) != 0) { 3164 /* Disable all continuous Tx. */ 3165 rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode & ~0x70); 3166 3167 /* Set RF mode to standby mode. */ 3168 for (i = 0; i < sc->nrxchains; i++) { 3169 rf_ac[i] = rtwn_rf_read(sc, i, R92C_RF_AC); 3170 rtwn_rf_write(sc, i, R92C_RF_AC, 3171 RW(rf_ac[i], R92C_RF_AC_MODE, 3172 R92C_RF_AC_MODE_STANDBY)); 3173 } 3174 } else { 3175 /* Block all Tx queues. */ 3176 rtwn_write_1(sc, R92C_TXPAUSE, 0xff); 3177 } 3178 /* Start calibration. */ 3179 rtwn_rf_write(sc, 0, R92C_RF_CHNLBW, 3180 rtwn_rf_read(sc, 0, R92C_RF_CHNLBW) | R92C_RF_CHNLBW_LCSTART); 3181 3182 /* Give calibration the time to complete. */ 3183 DELAY(100); 3184 3185 /* Restore configuration. */ 3186 if ((txmode & 0x70) != 0) { 3187 /* Restore Tx mode. */ 3188 rtwn_write_1(sc, R92C_OFDM1_LSTF + 3, txmode); 3189 /* Restore RF mode. */ 3190 for (i = 0; i < sc->nrxchains; i++) 3191 rtwn_rf_write(sc, i, R92C_RF_AC, rf_ac[i]); 3192 } else { 3193 /* Unblock all Tx queues. */ 3194 rtwn_write_1(sc, R92C_TXPAUSE, 0x00); 3195 } 3196} 3197 3198static void 3199rtwn_temp_calib(struct rtwn_softc *sc) 3200{ 3201 int temp; 3202 3203 if (sc->thcal_state == 0) { 3204 /* Start measuring temperature. */ 3205 rtwn_rf_write(sc, 0, R92C_RF_T_METER, 0x60); 3206 sc->thcal_state = 1; 3207 return; 3208 } 3209 sc->thcal_state = 0; 3210 3211 /* Read measured temperature. */ 3212 temp = rtwn_rf_read(sc, 0, R92C_RF_T_METER) & 0x1f; 3213 if (temp == 0) /* Read failed, skip. */ 3214 return; 3215 DPRINTFN(2, ("temperature=%d\n", temp)); 3216 3217 /* 3218 * Redo IQ and LC calibration if temperature changed significantly 3219 * since last calibration. 3220 */ 3221 if (sc->thcal_lctemp == 0) { 3222 /* First calibration is performed in rtwn_init(). */ 3223 sc->thcal_lctemp = temp; 3224 } else if (abs(temp - sc->thcal_lctemp) > 1) { 3225 DPRINTF(("IQ/LC calib triggered by temp: %d -> %d\n", 3226 sc->thcal_lctemp, temp)); 3227 rtwn_iq_calib(sc); 3228 rtwn_lc_calib(sc); 3229 /* Record temperature of last calibration. */ 3230 sc->thcal_lctemp = temp; 3231 } 3232} 3233 3234static int 3235rtwn_init(struct rtwn_softc *sc) 3236{ 3237 struct ieee80211com *ic = &sc->sc_ic; 3238 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 3239 uint32_t reg; 3240 uint8_t macaddr[IEEE80211_ADDR_LEN]; 3241 int i, error; 3242 3243 RTWN_LOCK(sc); 3244 3245 if (sc->sc_flags & RTWN_RUNNING) { 3246 RTWN_UNLOCK(sc); 3247 return 0; 3248 } 3249 sc->sc_flags |= RTWN_RUNNING; 3250 3251 /* Init firmware commands ring. */ 3252 sc->fwcur = 0; 3253 3254 /* Power on adapter. */ 3255 error = rtwn_power_on(sc); 3256 if (error != 0) { 3257 device_printf(sc->sc_dev, "could not power on adapter\n"); 3258 goto fail; 3259 } 3260 3261 /* Initialize DMA. */ 3262 error = rtwn_dma_init(sc); 3263 if (error != 0) { 3264 device_printf(sc->sc_dev, "could not initialize DMA\n"); 3265 goto fail; 3266 } 3267 3268 /* Set info size in Rx descriptors (in 64-bit words). */ 3269 rtwn_write_1(sc, R92C_RX_DRVINFO_SZ, 4); 3270 3271 /* Disable interrupts. */ 3272 rtwn_write_4(sc, R92C_HISR, 0x00000000); 3273 rtwn_write_4(sc, R92C_HIMR, 0x00000000); 3274 3275 /* Set MAC address. */ 3276 IEEE80211_ADDR_COPY(macaddr, vap ? vap->iv_myaddr : ic->ic_macaddr); 3277 for (i = 0; i < IEEE80211_ADDR_LEN; i++) 3278 rtwn_write_1(sc, R92C_MACID + i, macaddr[i]); 3279 3280 /* Set initial network type. */ 3281 reg = rtwn_read_4(sc, R92C_CR); 3282 reg = RW(reg, R92C_CR_NETTYPE, R92C_CR_NETTYPE_INFRA); 3283 rtwn_write_4(sc, R92C_CR, reg); 3284 3285 rtwn_rxfilter_init(sc); 3286 3287 reg = rtwn_read_4(sc, R92C_RRSR); 3288 reg = RW(reg, R92C_RRSR_RATE_BITMAP, R92C_RRSR_RATE_ALL); 3289 rtwn_write_4(sc, R92C_RRSR, reg); 3290 3291 /* Set short/long retry limits. */ 3292 rtwn_write_2(sc, R92C_RL, 3293 SM(R92C_RL_SRL, 0x07) | SM(R92C_RL_LRL, 0x07)); 3294 3295 /* Initialize EDCA parameters. */ 3296 rtwn_edca_init(sc); 3297 3298 /* Set data and response automatic rate fallback retry counts. */ 3299 rtwn_write_4(sc, R92C_DARFRC + 0, 0x01000000); 3300 rtwn_write_4(sc, R92C_DARFRC + 4, 0x07060504); 3301 rtwn_write_4(sc, R92C_RARFRC + 0, 0x01000000); 3302 rtwn_write_4(sc, R92C_RARFRC + 4, 0x07060504); 3303 3304 rtwn_write_2(sc, R92C_FWHW_TXQ_CTRL, 0x1f80); 3305 3306 /* Set ACK timeout. */ 3307 rtwn_write_1(sc, R92C_ACKTO, 0x40); 3308 3309 /* Initialize beacon parameters. */ 3310 rtwn_write_2(sc, R92C_TBTT_PROHIBIT, 0x6404); 3311 rtwn_write_1(sc, R92C_DRVERLYINT, 0x05); 3312 rtwn_write_1(sc, R92C_BCNDMATIM, 0x02); 3313 rtwn_write_2(sc, R92C_BCNTCFG, 0x660f); 3314 3315 /* Setup AMPDU aggregation. */ 3316 rtwn_write_4(sc, R92C_AGGLEN_LMT, 0x99997631); /* MCS7~0 */ 3317 rtwn_write_1(sc, R92C_AGGR_BREAK_TIME, 0x16); 3318 3319 rtwn_write_1(sc, R92C_BCN_MAX_ERR, 0xff); 3320 rtwn_write_1(sc, R92C_BCN_CTRL, R92C_BCN_CTRL_DIS_TSF_UDT0); 3321 3322 rtwn_write_4(sc, R92C_PIFS, 0x1c); 3323 rtwn_write_4(sc, R92C_MCUTST_1, 0x0); 3324 3325 /* Load 8051 microcode. */ 3326 error = rtwn_load_firmware(sc); 3327 if (error != 0) 3328 goto fail; 3329 3330 /* Initialize MAC/BB/RF blocks. */ 3331 rtwn_mac_init(sc); 3332 rtwn_bb_init(sc); 3333 rtwn_rf_init(sc); 3334 3335 /* Turn CCK and OFDM blocks on. */ 3336 reg = rtwn_bb_read(sc, R92C_FPGA0_RFMOD); 3337 reg |= R92C_RFMOD_CCK_EN; 3338 rtwn_bb_write(sc, R92C_FPGA0_RFMOD, reg); 3339 reg = rtwn_bb_read(sc, R92C_FPGA0_RFMOD); 3340 reg |= R92C_RFMOD_OFDM_EN; 3341 rtwn_bb_write(sc, R92C_FPGA0_RFMOD, reg); 3342 3343 /* Clear per-station keys table. */ 3344 rtwn_cam_init(sc); 3345 3346 /* Enable hardware sequence numbering. */ 3347 rtwn_write_1(sc, R92C_HWSEQ_CTRL, 0xff); 3348 3349 /* Perform LO and IQ calibrations. */ 3350 rtwn_iq_calib(sc); 3351 /* Perform LC calibration. */ 3352 rtwn_lc_calib(sc); 3353 3354 rtwn_pa_bias_init(sc); 3355 3356 /* Initialize GPIO setting. */ 3357 rtwn_write_1(sc, R92C_GPIO_MUXCFG, 3358 rtwn_read_1(sc, R92C_GPIO_MUXCFG) & ~R92C_GPIO_MUXCFG_ENBT); 3359 3360 /* Fix for lower temperature. */ 3361 rtwn_write_1(sc, 0x15, 0xe9); 3362 3363 /* CLear pending interrupts. */ 3364 rtwn_write_4(sc, R92C_HISR, 0xffffffff); 3365 3366 /* Enable interrupts. */ 3367 rtwn_write_4(sc, R92C_HIMR, RTWN_INT_ENABLE); 3368 3369 callout_reset(&sc->watchdog_to, hz, rtwn_watchdog, sc); 3370 3371fail: 3372 if (error != 0) 3373 rtwn_stop_locked(sc); 3374 3375 RTWN_UNLOCK(sc); 3376 3377 return error; 3378} 3379 3380static void 3381rtwn_stop_locked(struct rtwn_softc *sc) 3382{ 3383 uint16_t reg; 3384 int i; 3385 3386 RTWN_LOCK_ASSERT(sc); 3387 3388 if (!(sc->sc_flags & RTWN_RUNNING)) 3389 return; 3390 3391 sc->sc_tx_timer = 0; 3392 callout_stop(&sc->watchdog_to); 3393 callout_stop(&sc->calib_to); 3394 sc->sc_flags &= ~RTWN_RUNNING; 3395 3396 /* Disable interrupts. */ 3397 rtwn_write_4(sc, R92C_HISR, 0x00000000); 3398 rtwn_write_4(sc, R92C_HIMR, 0x00000000); 3399 3400 /* Stop hardware. */ 3401 rtwn_write_1(sc, R92C_TXPAUSE, 0xff); 3402 rtwn_write_1(sc, R92C_RF_CTRL, 0x00); 3403 reg = rtwn_read_1(sc, R92C_SYS_FUNC_EN); 3404 reg |= R92C_SYS_FUNC_EN_BB_GLB_RST; 3405 rtwn_write_1(sc, R92C_SYS_FUNC_EN, reg); 3406 reg &= ~R92C_SYS_FUNC_EN_BB_GLB_RST; 3407 rtwn_write_1(sc, R92C_SYS_FUNC_EN, reg); 3408 reg = rtwn_read_2(sc, R92C_CR); 3409 reg &= ~(R92C_CR_HCI_TXDMA_EN | R92C_CR_HCI_RXDMA_EN | 3410 R92C_CR_TXDMA_EN | R92C_CR_RXDMA_EN | R92C_CR_PROTOCOL_EN | 3411 R92C_CR_SCHEDULE_EN | R92C_CR_MACTXEN | R92C_CR_MACRXEN | 3412 R92C_CR_ENSEC); 3413 rtwn_write_2(sc, R92C_CR, reg); 3414 if (rtwn_read_1(sc, R92C_MCUFWDL) & R92C_MCUFWDL_RAM_DL_SEL) 3415 rtwn_fw_reset(sc); 3416 /* TODO: linux does additional btcoex stuff here */ 3417 rtwn_write_2(sc, R92C_AFE_PLL_CTRL, 0x80); /* linux magic number */ 3418 rtwn_write_1(sc, R92C_SPS0_CTRL, 0x23); /* ditto */ 3419 rtwn_write_1(sc, R92C_AFE_XTAL_CTRL, 0x0e); /* different with btcoex */ 3420 rtwn_write_1(sc, R92C_RSV_CTRL, 0x0e); 3421 rtwn_write_1(sc, R92C_APS_FSMCO, R92C_APS_FSMCO_PDN_EN); 3422 3423 for (i = 0; i < RTWN_NTXQUEUES; i++) 3424 rtwn_reset_tx_list(sc, i); 3425 rtwn_reset_rx_list(sc); 3426} 3427 3428static void 3429rtwn_stop(struct rtwn_softc *sc) 3430{ 3431 RTWN_LOCK(sc); 3432 rtwn_stop_locked(sc); 3433 RTWN_UNLOCK(sc); 3434} 3435 3436static void 3437rtwn_intr(void *arg) 3438{ 3439 struct rtwn_softc *sc = arg; 3440 uint32_t status; 3441 int i; 3442 3443 RTWN_LOCK(sc); 3444 status = rtwn_read_4(sc, R92C_HISR); 3445 if (status == 0 || status == 0xffffffff) { 3446 RTWN_UNLOCK(sc); 3447 return; 3448 } 3449 3450 /* Disable interrupts. */ 3451 rtwn_write_4(sc, R92C_HIMR, 0x00000000); 3452 3453 /* Ack interrupts. */ 3454 rtwn_write_4(sc, R92C_HISR, status); 3455 3456 /* Vendor driver treats RX errors like ROK... */ 3457 if (status & (R92C_IMR_ROK | R92C_IMR_RXFOVW | R92C_IMR_RDU)) { 3458 bus_dmamap_sync(sc->rx_ring.desc_dmat, sc->rx_ring.desc_map, 3459 BUS_DMASYNC_POSTREAD); 3460 3461 for (i = 0; i < RTWN_RX_LIST_COUNT; i++) { 3462 struct r92c_rx_desc *rx_desc = &sc->rx_ring.desc[i]; 3463 struct rtwn_rx_data *rx_data = &sc->rx_ring.rx_data[i]; 3464 3465 if (le32toh(rx_desc->rxdw0) & R92C_RXDW0_OWN) 3466 continue; 3467 3468 rtwn_rx_frame(sc, rx_desc, rx_data, i); 3469 } 3470 } 3471 3472 if (status & R92C_IMR_BDOK) 3473 rtwn_tx_done(sc, RTWN_BEACON_QUEUE); 3474 if (status & R92C_IMR_HIGHDOK) 3475 rtwn_tx_done(sc, RTWN_HIGH_QUEUE); 3476 if (status & R92C_IMR_MGNTDOK) 3477 rtwn_tx_done(sc, RTWN_MGNT_QUEUE); 3478 if (status & R92C_IMR_BKDOK) 3479 rtwn_tx_done(sc, RTWN_BK_QUEUE); 3480 if (status & R92C_IMR_BEDOK) 3481 rtwn_tx_done(sc, RTWN_BE_QUEUE); 3482 if (status & R92C_IMR_VIDOK) 3483 rtwn_tx_done(sc, RTWN_VI_QUEUE); 3484 if (status & R92C_IMR_VODOK) 3485 rtwn_tx_done(sc, RTWN_VO_QUEUE); 3486 3487 /* Enable interrupts. */ 3488 rtwn_write_4(sc, R92C_HIMR, RTWN_INT_ENABLE); 3489 3490 RTWN_UNLOCK(sc); 3491} 3492